lpfc_attr.c 174.8 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) 2004-2013 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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#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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	return snprintf(buf, PAGE_SIZE, "%s\n", phba->OptionROMVersion);
}
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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);
}

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/**
 * 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))
576
		status = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
577 578
	else if ((strncmp(buf, "down", sizeof("down") - 1) == 0) &&
			(phba->link_state >= LPFC_LINK_UP))
579
		status = phba->lpfc_hba_down_link(phba, MBX_NOWAIT);
580 581 582 583 584 585 586

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

587
/**
588
 * lpfc_num_discovered_ports_show - Return sum of mapped and unmapped vports
589 590 591 592 593 594 595 596 597 598
 * @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
599
static ssize_t
600 601
lpfc_num_discovered_ports_show(struct device *dev,
			       struct device_attribute *attr, char *buf)
已提交
602
{
603
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
604 605 606 607
	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
608 609
}

610
/**
611
 * lpfc_issue_lip - Misnomer, name carried over from long ago
612 613 614 615 616 617 618 619 620 621 622 623
 * @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
 **/
624
static int
J
James Smart 已提交
625
lpfc_issue_lip(struct Scsi_Host *shost)
已提交
626
{
J
James Smart 已提交
627 628
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
已提交
629 630 631
	LPFC_MBOXQ_t *pmboxq;
	int mbxstatus = MBXERR_ERROR;

J
James Smart 已提交
632
	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
633
	    (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO))
已提交
634 635 636 637 638 639 640 641
		return -EPERM;

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

	if (!pmboxq)
		return -ENOMEM;

	memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
642 643
	pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
	pmboxq->u.mb.mbxOwner = OWN_HOST;
644

J
James Smart 已提交
645
	mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);
已提交
646

647 648 649
	if ((mbxstatus == MBX_SUCCESS) &&
	    (pmboxq->u.mb.mbxStatus == 0 ||
	     pmboxq->u.mb.mbxStatus == MBXERR_LINK_DOWN)) {
650 651 652 653 654
		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);
655 656 657 658 659
		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");
660 661
	}

662
	lpfc_set_loopback_flag(phba);
J
James Smart 已提交
663
	if (mbxstatus != MBX_TIMEOUT)
664
		mempool_free(pmboxq, phba->mbox_mem_pool);
已提交
665 666 667 668

	if (mbxstatus == MBXERR_ERROR)
		return -EIO;

669
	return 0;
已提交
670 671
}

672
/**
673
 * lpfc_do_offline - Issues a mailbox command to bring the link down
674 675 676 677 678 679 680
 * @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.
681
 * lpfc_workq_post_event() returns a non-zero return code if call fails.
682 683 684 685 686
 *
 * Returns:
 * -EIO error posting the event
 * zero for success
 **/
687
static int
688
lpfc_do_offline(struct lpfc_hba *phba, uint32_t type)
689 690
{
	struct completion online_compl;
691 692
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
693
	int status = 0;
694 695
	int cnt = 0;
	int i;
696
	int rc;
697 698

	init_completion(&online_compl);
699
	rc = lpfc_workq_post_event(phba, &status, &online_compl,
700
			      LPFC_EVT_OFFLINE_PREP);
701 702 703
	if (rc == 0)
		return -ENOMEM;

704 705 706 707 708 709 710
	wait_for_completion(&online_compl);

	if (status != 0)
		return -EIO;

	psli = &phba->sli;

711 712 713
	/* Wait a little for things to settle down, but not
	 * long enough for dev loss timeout to expire.
	 */
714 715
	for (i = 0; i < psli->num_rings; i++) {
		pring = &psli->ring[i];
716
		while (!list_empty(&pring->txcmplq)) {
717
			msleep(10);
718
			if (cnt++ > 500) {  /* 5 secs */
719 720
				lpfc_printf_log(phba,
					KERN_WARNING, LOG_INIT,
721 722
					"0466 Outstanding IO when "
					"bringing Adapter offline\n");
723 724 725 726 727 728
				break;
			}
		}
	}

	init_completion(&online_compl);
729 730 731 732
	rc = lpfc_workq_post_event(phba, &status, &online_compl, type);
	if (rc == 0)
		return -ENOMEM;

733 734 735 736 737
	wait_for_completion(&online_compl);

	if (status != 0)
		return -EIO;

738 739 740
	return 0;
}

741
/**
742
 * lpfc_selective_reset - Offline then onlines the port
743 744 745 746 747 748 749 750
 * @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.
751
 * Do not make this function static.
752 753 754 755 756 757
 *
 * Returns:
 * lpfc_do_offline() return code if not zero
 * -EIO reset not configured or error posting the event
 * zero for success
 **/
758
int
759 760 761 762
lpfc_selective_reset(struct lpfc_hba *phba)
{
	struct completion online_compl;
	int status = 0;
763
	int rc;
764

765
	if (!phba->cfg_enable_hba_reset)
766
		return -EACCES;
767

768 769
	if (!(phba->pport->fc_flag & FC_OFFLINE_MODE)) {
		status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
770

771 772 773
		if (status != 0)
			return status;
	}
774

775
	init_completion(&online_compl);
776
	rc = lpfc_workq_post_event(phba, &status, &online_compl,
777
			      LPFC_EVT_ONLINE);
778 779 780
	if (rc == 0)
		return -ENOMEM;

781 782 783 784 785 786 787 788
	wait_for_completion(&online_compl);

	if (status != 0)
		return -EIO;

	return 0;
}

789
/**
790
 * lpfc_issue_reset - Selectively resets an adapter
791 792 793 794 795 796 797 798 799 800 801 802
 * @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
803
 * is returned which indicates success
804 805 806 807 808 809
 *
 * 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
**/
810
static ssize_t
811 812
lpfc_issue_reset(struct device *dev, struct device_attribute *attr,
		 const char *buf, size_t count)
813
{
814
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
815 816
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
817 818
	int status = -EINVAL;

819 820 821
	if (!phba->cfg_enable_hba_reset)
		return -EACCES;

822
	if (strncmp(buf, "selective", sizeof("selective") - 1) == 0)
823
		status = phba->lpfc_selective_reset(phba);
824 825 826 827 828 829 830

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

831 832 833 834 835 836 837 838 839
/**
 * 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
840
 * zero for success, -EPERM when port does not have privilege to perform the
841 842 843 844 845
 * 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.
846
 **/
847
int
848 849
lpfc_sli4_pdev_status_reg_wait(struct lpfc_hba *phba)
{
850
	struct lpfc_register portstat_reg = {0};
851 852
	int i;

853
	msleep(100);
854 855 856
	lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
		   &portstat_reg.word0);

M
Masanari Iida 已提交
857
	/* verify if privileged for the request operation */
858 859 860 861
	if (!bf_get(lpfc_sliport_status_rn, &portstat_reg) &&
	    !bf_get(lpfc_sliport_status_err, &portstat_reg))
		return -EPERM;

862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881
	/* 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;
}

882
/**
883
 * lpfc_sli4_pdev_reg_request - Request physical dev to perform a register acc
884 885 886
 * @phba: lpfc_hba pointer.
 *
 * Description:
887 888
 * Request SLI4 interface type-2 device to perform a physical register set
 * access.
889 890 891 892 893
 *
 * Returns:
 * zero for success
 **/
static ssize_t
894
lpfc_sli4_pdev_reg_request(struct lpfc_hba *phba, uint32_t opcode)
895 896
{
	struct completion online_compl;
897
	struct pci_dev *pdev = phba->pcidev;
898 899
	uint32_t before_fc_flag;
	uint32_t sriov_nr_virtfn;
900
	uint32_t reg_val;
901 902
	int status = 0, rc = 0;
	int job_posted = 1, sriov_err;
903 904

	if (!phba->cfg_enable_hba_reset)
905
		return -EACCES;
906

907 908 909 910 911
	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;

912 913 914 915
	/* Keep state if we need to restore back */
	before_fc_flag = phba->pport->fc_flag;
	sriov_nr_virtfn = phba->cfg_sriov_nr_virtfn;

916 917 918 919 920
	/* Disable SR-IOV virtual functions if enabled */
	if (phba->cfg_sriov_nr_virtfn) {
		pci_disable_sriov(pdev);
		phba->cfg_sriov_nr_virtfn = 0;
	}
921

J
James Smart 已提交
922 923 924
	if (opcode == LPFC_FW_DUMP)
		phba->hba_flag |= HBA_FW_DUMP_OP;

925 926
	status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);

J
James Smart 已提交
927 928
	if (status != 0) {
		phba->hba_flag &= ~HBA_FW_DUMP_OP;
929
		return status;
J
James Smart 已提交
930
	}
931 932 933 934 935 936

	/* 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);
937 938 939 940 941 942 943 944

	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;

945 946 947 948 949 950
	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 */
951 952
	rc = lpfc_sli4_pdev_status_reg_wait(phba);

953
	if (rc == -EPERM) {
M
Masanari Iida 已提交
954
		/* no privilege for reset */
955
		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
M
Masanari Iida 已提交
956
				"3150 No privilege to perform the requested "
957
				"access: x%x\n", reg_val);
958 959
	} else if (rc == -EIO) {
		/* reset failed, there is nothing more we can do */
960 961 962
		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
				"3153 Fail to perform the requested "
				"access: x%x\n", reg_val);
963
		return rc;
964 965 966 967 968
	}

	/* keep the original port state */
	if (before_fc_flag & FC_OFFLINE_MODE)
		goto out;
969 970

	init_completion(&online_compl);
971 972 973 974
	job_posted = lpfc_workq_post_event(phba, &status, &online_compl,
					   LPFC_EVT_ONLINE);
	if (!job_posted)
		goto out;
975 976 977

	wait_for_completion(&online_compl);

978 979 980 981 982 983 984 985
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;
	}
986

987 988 989 990 991 992 993 994
	/* return proper error code */
	if (!rc) {
		if (!job_posted)
			rc = -ENOMEM;
		else if (status)
			rc = -EIO;
	}
	return rc;
995 996
}

997
/**
998
 * lpfc_nport_evt_cnt_show - Return the number of nport events
999 1000 1001 1002 1003 1004
 * @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
1005
static ssize_t
1006 1007
lpfc_nport_evt_cnt_show(struct device *dev, struct device_attribute *attr,
			char *buf)
已提交
1008
{
1009
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1010 1011 1012
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

已提交
1013 1014 1015
	return snprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt);
}

1016
/**
1017
 * lpfc_board_mode_show - Return the state of the board
1018 1019 1020 1021 1022 1023
 * @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.
 **/
1024
static ssize_t
1025 1026
lpfc_board_mode_show(struct device *dev, struct device_attribute *attr,
		     char *buf)
1027
{
1028
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1029 1030
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
1031 1032
	char  * state;

J
James Smart 已提交
1033
	if (phba->link_state == LPFC_HBA_ERROR)
1034
		state = "error";
J
James Smart 已提交
1035
	else if (phba->link_state == LPFC_WARM_START)
1036
		state = "warm start";
J
James Smart 已提交
1037
	else if (phba->link_state == LPFC_INIT_START)
1038 1039 1040 1041 1042 1043 1044
		state = "offline";
	else
		state = "online";

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

1045
/**
1046
 * lpfc_board_mode_store - Puts the hba in online, offline, warm or error state
1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
 * @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
 **/
1058
static ssize_t
1059 1060
lpfc_board_mode_store(struct device *dev, struct device_attribute *attr,
		      const char *buf, size_t count)
1061
{
1062
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1063 1064
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
1065
	struct completion online_compl;
1066 1067
	char *board_mode_str = NULL;
	int status = 0;
1068
	int rc;
1069

1070 1071 1072 1073
	if (!phba->cfg_enable_hba_reset) {
		status = -EACCES;
		goto board_mode_out;
	}
1074 1075

	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1076
			 "3050 lpfc_board_mode set to %s\n", buf);
1077

1078 1079
	init_completion(&online_compl);

1080
	if(strncmp(buf, "online", sizeof("online") - 1) == 0) {
1081
		rc = lpfc_workq_post_event(phba, &status, &online_compl,
1082
				      LPFC_EVT_ONLINE);
1083 1084 1085 1086
		if (rc == 0) {
			status = -ENOMEM;
			goto board_mode_out;
		}
1087 1088 1089
		wait_for_completion(&online_compl);
	} else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
		status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
1090
	else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0)
1091
		if (phba->sli_rev == LPFC_SLI_REV4)
1092
			status = -EINVAL;
1093 1094
		else
			status = lpfc_do_offline(phba, LPFC_EVT_WARM_START);
1095
	else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
1096
		if (phba->sli_rev == LPFC_SLI_REV4)
1097
			status = -EINVAL;
1098 1099
		else
			status = lpfc_do_offline(phba, LPFC_EVT_KILL);
1100
	else if (strncmp(buf, "dump", sizeof("dump") - 1) == 0)
1101 1102 1103 1104 1105
		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);
1106
	else
1107
		status = -EINVAL;
1108

1109
board_mode_out:
1110 1111
	if (!status)
		return strlen(buf);
1112 1113 1114 1115 1116 1117 1118 1119
	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);
1120
		return status;
1121
	}
1122 1123
}

1124
/**
1125
 * lpfc_get_hba_info - Return various bits of informaton about the adapter
1126
 * @phba: pointer to the adapter structure.
1127 1128 1129 1130 1131 1132
 * @mxri: max xri count.
 * @axri: available xri count.
 * @mrpi: max rpi count.
 * @arpi: available rpi count.
 * @mvpi: max vpi count.
 * @avpi: available vpi count.
1133 1134 1135 1136 1137 1138 1139 1140 1141
 *
 * 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
1142
static int
J
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1143 1144 1145 1146
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)
1147
{
1148
	struct lpfc_mbx_read_config *rd_config;
1149 1150 1151
	LPFC_MBOXQ_t *pmboxq;
	MAILBOX_t *pmb;
	int rc = 0;
1152
	uint32_t max_vpi;
1153 1154 1155 1156 1157 1158 1159

	/*
	 * prevent udev from issuing mailbox commands until the port is
	 * configured.
	 */
	if (phba->link_state < LPFC_LINK_DOWN ||
	    !phba->mbox_mem_pool ||
1160
	    (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
1161 1162 1163 1164 1165 1166 1167 1168 1169 1170
		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));

1171
	pmb = &pmboxq->u.mb;
1172 1173 1174 1175
	pmb->mbxCommand = MBX_READ_CONFIG;
	pmb->mbxOwner = OWN_HOST;
	pmboxq->context1 = NULL;

1176
	if (phba->pport->fc_flag & FC_OFFLINE_MODE)
1177 1178 1179 1180 1181
		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
1182
		if (rc != MBX_TIMEOUT)
1183 1184 1185 1186
			mempool_free(pmboxq, phba->mbox_mem_pool);
		return 0;
	}

1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198
	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;
1199 1200 1201 1202 1203 1204 1205

		/* 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;

1206
		if (mvpi)
1207
			*mvpi = max_vpi;
1208
		if (avpi)
1209
			*avpi = max_vpi - phba->sli4_hba.max_cfg_param.vpi_used;
1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223
	} 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;
	}
1224 1225 1226 1227 1228

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

1229
/**
1230
 * lpfc_max_rpi_show - Return maximum rpi
1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242
 * @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.
 **/
1243
static ssize_t
1244 1245
lpfc_max_rpi_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
1246
{
1247
	struct Scsi_Host  *shost = class_to_shost(dev);
1248 1249 1250 1251
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t cnt;

J
James Smart 已提交
1252
	if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, NULL, NULL, NULL))
1253 1254 1255 1256
		return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

1257
/**
1258
 * lpfc_used_rpi_show - Return maximum rpi minus available rpi
1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270
 * @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.
 **/
1271
static ssize_t
1272 1273
lpfc_used_rpi_show(struct device *dev, struct device_attribute *attr,
		   char *buf)
1274
{
1275
	struct Scsi_Host  *shost = class_to_shost(dev);
1276 1277 1278 1279
	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
1280
	if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, &acnt, NULL, NULL))
1281 1282 1283 1284
		return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

1285
/**
1286
 * lpfc_max_xri_show - Return maximum xri
1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298
 * @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.
 **/
1299
static ssize_t
1300 1301
lpfc_max_xri_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
1302
{
1303
	struct Scsi_Host  *shost = class_to_shost(dev);
1304 1305 1306 1307
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t cnt;

J
James Smart 已提交
1308
	if (lpfc_get_hba_info(phba, &cnt, NULL, NULL, NULL, NULL, NULL))
1309 1310 1311 1312
		return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

1313
/**
1314
 * lpfc_used_xri_show - Return maximum xpi minus the available xpi
1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326
 * @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.
 **/
1327
static ssize_t
1328 1329
lpfc_used_xri_show(struct device *dev, struct device_attribute *attr,
		   char *buf)
1330
{
1331
	struct Scsi_Host  *shost = class_to_shost(dev);
1332 1333 1334 1335
	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
1336 1337 1338 1339 1340
	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");
}

1341
/**
1342
 * lpfc_max_vpi_show - Return maximum vpi
1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354
 * @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
1355
static ssize_t
1356 1357
lpfc_max_vpi_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
J
James Smart 已提交
1358
{
1359
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1360 1361 1362 1363 1364 1365 1366 1367 1368
	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");
}

1369
/**
1370
 * lpfc_used_vpi_show - Return maximum vpi minus the available vpi
1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382
 * @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
1383
static ssize_t
1384 1385
lpfc_used_vpi_show(struct device *dev, struct device_attribute *attr,
		   char *buf)
J
James Smart 已提交
1386
{
1387
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1388 1389 1390 1391 1392
	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))
1393 1394 1395 1396
		return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

1397
/**
1398
 * lpfc_npiv_info_show - Return text about NPIV support for the adapter
1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409
 * @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.
 **/
1410
static ssize_t
1411 1412
lpfc_npiv_info_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
1413
{
1414
	struct Scsi_Host  *shost = class_to_shost(dev);
1415 1416 1417 1418 1419 1420 1421 1422 1423 1424
	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);
}

1425
/**
1426
 * lpfc_poll_show - Return text about poll support for the adapter
1427 1428 1429 1430 1431 1432 1433 1434 1435
 * @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.
 **/
1436
static ssize_t
1437 1438
lpfc_poll_show(struct device *dev, struct device_attribute *attr,
	       char *buf)
1439
{
1440
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1441 1442
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
1443 1444 1445 1446

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

1447
/**
1448
 * lpfc_poll_store - Set the value of cfg_poll for the adapter
1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460
 * @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
 **/
1461
static ssize_t
1462 1463
lpfc_poll_store(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
1464
{
1465
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1466 1467
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480
	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;

1481 1482 1483
	if (phba->sli_rev == LPFC_SLI_REV4)
		val = 0;

1484 1485 1486 1487
	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
1488
	spin_lock_irq(&phba->hbalock);
1489 1490 1491 1492 1493 1494

	old_val = phba->cfg_poll;

	if (val & ENABLE_FCP_RING_POLLING) {
		if ((val & DISABLE_FCP_RING_INT) &&
		    !(old_val & DISABLE_FCP_RING_INT)) {
1495 1496 1497 1498
			if (lpfc_readl(phba->HCregaddr, &creg_val)) {
				spin_unlock_irq(&phba->hbalock);
				return -EINVAL;
			}
1499 1500 1501 1502 1503 1504 1505
			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
1506
		spin_unlock_irq(&phba->hbalock);
1507 1508 1509 1510 1511 1512
		return -EINVAL;
	}

	if (!(val & DISABLE_FCP_RING_INT) &&
	    (old_val & DISABLE_FCP_RING_INT))
	{
J
James Smart 已提交
1513
		spin_unlock_irq(&phba->hbalock);
1514
		del_timer(&phba->fcp_poll_timer);
J
James Smart 已提交
1515
		spin_lock_irq(&phba->hbalock);
1516 1517 1518 1519
		if (lpfc_readl(phba->HCregaddr, &creg_val)) {
			spin_unlock_irq(&phba->hbalock);
			return -EINVAL;
		}
1520 1521 1522 1523 1524 1525 1526
		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
1527
	spin_unlock_irq(&phba->hbalock);
1528 1529 1530

	return strlen(buf);
}
已提交
1531

1532 1533 1534 1535 1536 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
/**
 * 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);
}

1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591
/**
 * 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 ");
}

1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611
/**
 * 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;
1612
	uint16_t max_nr_virtfn;
1613

1614 1615
	max_nr_virtfn = lpfc_sli_sriov_nr_virtfn_get(phba);
	return snprintf(buf, PAGE_SIZE, "%d\n", max_nr_virtfn);
1616 1617
}

1618
/**
1619
 * lpfc_param_show - Return a cfg attribute value in decimal
1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631
 *
 * 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
1632 1633
#define lpfc_param_show(attr)	\
static ssize_t \
1634 1635
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
		   char *buf) \
已提交
1636
{ \
1637
	struct Scsi_Host  *shost = class_to_shost(dev);\
J
James Smart 已提交
1638 1639
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	struct lpfc_hba   *phba = vport->phba;\
1640
	uint val = 0;\
1641 1642 1643 1644 1645
	val = phba->cfg_##attr;\
	return snprintf(buf, PAGE_SIZE, "%d\n",\
			phba->cfg_##attr);\
}

1646
/**
1647
 * lpfc_param_hex_show - Return a cfg attribute value in hex
1648 1649 1650 1651 1652 1653 1654 1655
 *
 * 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.
1656
 * @buf: on return contains the attribute value in hexadecimal.
1657 1658 1659
 *
 * Returns: size of formatted string.
 **/
1660 1661
#define lpfc_param_hex_show(attr)	\
static ssize_t \
1662 1663
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
		   char *buf) \
1664
{ \
1665
	struct Scsi_Host  *shost = class_to_shost(dev);\
J
James Smart 已提交
1666 1667
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	struct lpfc_hba   *phba = vport->phba;\
1668
	uint val = 0;\
1669 1670 1671 1672 1673
	val = phba->cfg_##attr;\
	return snprintf(buf, PAGE_SIZE, "%#x\n",\
			phba->cfg_##attr);\
}

1674
/**
1675
 * lpfc_param_init - Initializes a cfg attribute
1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692
 *
 * 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
 **/
1693 1694
#define lpfc_param_init(attr, default, minval, maxval)	\
static int \
1695
lpfc_##attr##_init(struct lpfc_hba *phba, uint val) \
1696 1697 1698 1699
{ \
	if (val >= minval && val <= maxval) {\
		phba->cfg_##attr = val;\
		return 0;\
已提交
1700
	}\
1701
	lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
1702 1703
			"0449 lpfc_"#attr" attribute cannot be set to %d, "\
			"allowed range is ["#minval", "#maxval"]\n", val); \
1704 1705
	phba->cfg_##attr = default;\
	return -EINVAL;\
已提交
1706 1707
}

1708
/**
1709
 * lpfc_param_set - Set a cfg attribute value
1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727
 *
 * 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
 **/
1728 1729
#define lpfc_param_set(attr, default, minval, maxval)	\
static int \
1730
lpfc_##attr##_set(struct lpfc_hba *phba, uint val) \
1731 1732
{ \
	if (val >= minval && val <= maxval) {\
1733 1734 1735
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
			"3052 lpfc_" #attr " changed from %d to %d\n", \
			phba->cfg_##attr, val); \
1736 1737 1738 1739
		phba->cfg_##attr = val;\
		return 0;\
	}\
	lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
1740 1741
			"0450 lpfc_"#attr" attribute cannot be set to %d, "\
			"allowed range is ["#minval", "#maxval"]\n", val); \
1742 1743 1744
	return -EINVAL;\
}

1745
/**
1746
 * lpfc_param_store - Set a vport attribute value
1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765
 *
 * 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.
 **/
1766
#define lpfc_param_store(attr)	\
已提交
1767
static ssize_t \
1768 1769
lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
		    const char *buf, size_t count) \
已提交
1770
{ \
1771
	struct Scsi_Host  *shost = class_to_shost(dev);\
J
James Smart 已提交
1772 1773
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	struct lpfc_hba   *phba = vport->phba;\
1774
	uint val = 0;\
1775 1776 1777 1778
	if (!isdigit(buf[0]))\
		return -EINVAL;\
	if (sscanf(buf, "%i", &val) != 1)\
		return -EINVAL;\
1779
	if (lpfc_##attr##_set(phba, val) == 0) \
1780
		return strlen(buf);\
1781 1782
	else \
		return -EINVAL;\
已提交
1783 1784
}

1785
/**
1786
 * lpfc_vport_param_show - Return decimal formatted cfg attribute value
1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798
 *
 * 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.
 **/
1799 1800
#define lpfc_vport_param_show(attr)	\
static ssize_t \
1801 1802
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
		   char *buf) \
1803
{ \
1804
	struct Scsi_Host  *shost = class_to_shost(dev);\
1805
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
1806
	uint val = 0;\
1807 1808 1809 1810
	val = vport->cfg_##attr;\
	return snprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_##attr);\
}

1811
/**
1812
 * lpfc_vport_param_hex_show - Return hex formatted attribute value
1813 1814 1815 1816 1817 1818
 *
 * Description:
 * Macro that given an attr e.g.
 * hba_queue_depth expands into a function with the name
 * lpfc_hba_queue_depth_show
 *
1819
 * lpfc_##attr##_show: prints the attribute value in hexadecimal.
1820 1821
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
1822
 * @buf: on return contains the attribute value in hexadecimal.
1823 1824 1825
 *
 * Returns: length of formatted string.
 **/
1826 1827
#define lpfc_vport_param_hex_show(attr)	\
static ssize_t \
1828 1829
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
		   char *buf) \
1830
{ \
1831
	struct Scsi_Host  *shost = class_to_shost(dev);\
1832
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
1833
	uint val = 0;\
1834 1835 1836 1837
	val = vport->cfg_##attr;\
	return snprintf(buf, PAGE_SIZE, "%#x\n", vport->cfg_##attr);\
}

1838
/**
1839
 * lpfc_vport_param_init - Initialize a vport cfg attribute
1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855
 *
 * 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
 **/
1856 1857
#define lpfc_vport_param_init(attr, default, minval, maxval)	\
static int \
1858
lpfc_##attr##_init(struct lpfc_vport *vport, uint val) \
1859 1860 1861 1862 1863
{ \
	if (val >= minval && val <= maxval) {\
		vport->cfg_##attr = val;\
		return 0;\
	}\
1864
	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
1865
			 "0423 lpfc_"#attr" attribute cannot be set to %d, "\
1866
			 "allowed range is ["#minval", "#maxval"]\n", val); \
1867 1868 1869 1870
	vport->cfg_##attr = default;\
	return -EINVAL;\
}

1871
/**
1872
 * lpfc_vport_param_set - Set a vport cfg attribute
1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887
 *
 * 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
 **/
1888 1889
#define lpfc_vport_param_set(attr, default, minval, maxval)	\
static int \
1890
lpfc_##attr##_set(struct lpfc_vport *vport, uint val) \
1891 1892
{ \
	if (val >= minval && val <= maxval) {\
1893
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
1894 1895 1896 1897
			"3053 lpfc_" #attr \
			" changed from %d (x%x) to %d (x%x)\n", \
			vport->cfg_##attr, vport->cfg_##attr, \
			val, val); \
1898 1899 1900
		vport->cfg_##attr = val;\
		return 0;\
	}\
1901
	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
1902
			 "0424 lpfc_"#attr" attribute cannot be set to %d, "\
1903
			 "allowed range is ["#minval", "#maxval"]\n", val); \
1904 1905 1906
	return -EINVAL;\
}

1907
/**
1908
 * lpfc_vport_param_store - Set a vport attribute
1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923
 *
 * 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.
 **/
1924 1925
#define lpfc_vport_param_store(attr)	\
static ssize_t \
1926 1927
lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
		    const char *buf, size_t count) \
1928
{ \
1929
	struct Scsi_Host  *shost = class_to_shost(dev);\
1930
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
1931
	uint val = 0;\
1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942
	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;\
}


1943
#define LPFC_ATTR(name, defval, minval, maxval, desc) \
1944
static uint lpfc_##name = defval;\
1945
module_param(lpfc_##name, uint, S_IRUGO);\
已提交
1946
MODULE_PARM_DESC(lpfc_##name, desc);\
1947
lpfc_param_init(name, defval, minval, maxval)
已提交
1948 1949

#define LPFC_ATTR_R(name, defval, minval, maxval, desc) \
1950
static uint lpfc_##name = defval;\
1951
module_param(lpfc_##name, uint, S_IRUGO);\
已提交
1952 1953
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_param_show(name)\
1954
lpfc_param_init(name, defval, minval, maxval)\
1955
static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
已提交
1956 1957

#define LPFC_ATTR_RW(name, defval, minval, maxval, desc) \
1958
static uint lpfc_##name = defval;\
1959
module_param(lpfc_##name, uint, S_IRUGO);\
已提交
1960 1961
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_param_show(name)\
1962 1963 1964
lpfc_param_init(name, defval, minval, maxval)\
lpfc_param_set(name, defval, minval, maxval)\
lpfc_param_store(name)\
1965 1966
static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
		   lpfc_##name##_show, lpfc_##name##_store)
已提交
1967

1968
#define LPFC_ATTR_HEX_R(name, defval, minval, maxval, desc) \
1969
static uint lpfc_##name = defval;\
1970
module_param(lpfc_##name, uint, S_IRUGO);\
1971 1972 1973
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_param_hex_show(name)\
lpfc_param_init(name, defval, minval, maxval)\
1974
static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
1975 1976

#define LPFC_ATTR_HEX_RW(name, defval, minval, maxval, desc) \
1977
static uint lpfc_##name = defval;\
1978
module_param(lpfc_##name, uint, S_IRUGO);\
1979 1980 1981 1982 1983
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_param_hex_show(name)\
lpfc_param_init(name, defval, minval, maxval)\
lpfc_param_set(name, defval, minval, maxval)\
lpfc_param_store(name)\
1984 1985
static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
		   lpfc_##name##_show, lpfc_##name##_store)
1986

1987
#define LPFC_VPORT_ATTR(name, defval, minval, maxval, desc) \
1988
static uint lpfc_##name = defval;\
1989
module_param(lpfc_##name, uint, S_IRUGO);\
1990 1991 1992 1993
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_vport_param_init(name, defval, minval, maxval)

#define LPFC_VPORT_ATTR_R(name, defval, minval, maxval, desc) \
1994
static uint lpfc_##name = defval;\
1995
module_param(lpfc_##name, uint, S_IRUGO);\
1996 1997 1998
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_vport_param_show(name)\
lpfc_vport_param_init(name, defval, minval, maxval)\
1999
static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
2000 2001

#define LPFC_VPORT_ATTR_RW(name, defval, minval, maxval, desc) \
2002
static uint lpfc_##name = defval;\
2003
module_param(lpfc_##name, uint, S_IRUGO);\
2004 2005 2006 2007 2008
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_vport_param_show(name)\
lpfc_vport_param_init(name, defval, minval, maxval)\
lpfc_vport_param_set(name, defval, minval, maxval)\
lpfc_vport_param_store(name)\
2009 2010
static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
		   lpfc_##name##_show, lpfc_##name##_store)
2011 2012

#define LPFC_VPORT_ATTR_HEX_R(name, defval, minval, maxval, desc) \
2013
static uint lpfc_##name = defval;\
2014
module_param(lpfc_##name, uint, S_IRUGO);\
2015 2016 2017
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_vport_param_hex_show(name)\
lpfc_vport_param_init(name, defval, minval, maxval)\
2018
static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
2019 2020

#define LPFC_VPORT_ATTR_HEX_RW(name, defval, minval, maxval, desc) \
2021
static uint lpfc_##name = defval;\
2022
module_param(lpfc_##name, uint, S_IRUGO);\
2023 2024 2025 2026 2027
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_vport_param_hex_show(name)\
lpfc_vport_param_init(name, defval, minval, maxval)\
lpfc_vport_param_set(name, defval, minval, maxval)\
lpfc_vport_param_store(name)\
2028 2029 2030
static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
		   lpfc_##name##_show, lpfc_##name##_store)

2031 2032 2033 2034
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);
2035 2036 2037 2038 2039 2040 2041 2042
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);
2043 2044
static DEVICE_ATTR(link_state, S_IRUGO | S_IWUSR, lpfc_link_state_show,
		lpfc_link_state_store);
2045 2046 2047 2048
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);
2049
static DEVICE_ATTR(menlo_mgmt_mode, S_IRUGO, lpfc_mlomgmt_show, NULL);
2050 2051
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);
2052
static DEVICE_ATTR(lpfc_enable_fip, S_IRUGO, lpfc_enable_fip_show, NULL);
2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063
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);
2064 2065
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);
2066
static DEVICE_ATTR(lpfc_dss, S_IRUGO, lpfc_dss_show, NULL);
2067 2068
static DEVICE_ATTR(lpfc_sriov_hw_max_virtfn, S_IRUGO,
		   lpfc_sriov_hw_max_virtfn_show, NULL);
2069
static DEVICE_ATTR(protocol, S_IRUGO, lpfc_sli4_protocol_show, NULL);
2070 2071
static DEVICE_ATTR(lpfc_xlane_supported, S_IRUGO, lpfc_oas_supported_show,
		   NULL);
2072

2073
static char *lpfc_soft_wwn_key = "C99G71SL8032A";
2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092
#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--;
2093

2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116
	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;
}
2117
/**
2118
 * lpfc_soft_wwn_enable_store - Allows setting of the wwn if the key is valid
2119 2120 2121 2122 2123 2124 2125 2126 2127
 * @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
 **/
2128
static ssize_t
2129 2130
lpfc_soft_wwn_enable_store(struct device *dev, struct device_attribute *attr,
			   const char *buf, size_t count)
2131
{
2132
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
2133 2134
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153
	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--;

2154 2155
	if ((cnt != strlen(lpfc_soft_wwn_key)) ||
	    (strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0))
2156 2157
		return -EINVAL;

2158
	phba->soft_wwn_enable = 1;
2159 2160
	return count;
}
2161 2162
static DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL,
		   lpfc_soft_wwn_enable_store);
2163

2164
/**
2165
 * lpfc_soft_wwpn_show - Return the cfg soft ww port name of the adapter
2166 2167
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
2168
 * @buf: on return contains the wwpn in hexadecimal.
2169 2170 2171
 *
 * Returns: size of formatted string.
 **/
2172
static ssize_t
2173 2174
lpfc_soft_wwpn_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
2175
{
2176
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
2177 2178 2179
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

2180 2181
	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
			(unsigned long long)phba->cfg_soft_wwpn);
2182 2183
}

2184
/**
2185
 * lpfc_soft_wwpn_store - Set the ww port name of the adapter
2186 2187
 * @dev class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
2188
 * @buf: contains the wwpn in hexadecimal.
2189 2190 2191 2192 2193 2194 2195 2196
 * @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
 **/
2197
static ssize_t
2198 2199
lpfc_soft_wwpn_store(struct device *dev, struct device_attribute *attr,
		     const char *buf, size_t count)
2200
{
2201
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
2202 2203
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
2204
	struct completion online_compl;
2205 2206 2207
	int stat1 = 0, stat2 = 0;
	unsigned int cnt = count;
	u8 wwpn[WWN_SZ];
2208
	int rc;
2209

2210 2211
	if (!phba->cfg_enable_hba_reset)
		return -EACCES;
2212 2213 2214
	spin_lock_irq(&phba->hbalock);
	if (phba->over_temp_state == HBA_OVER_TEMP) {
		spin_unlock_irq(&phba->hbalock);
2215
		return -EACCES;
2216 2217
	}
	spin_unlock_irq(&phba->hbalock);
2218 2219 2220 2221
	/* count may include a LF at end of string */
	if (buf[cnt-1] == '\n')
		cnt--;

2222
	if (!phba->soft_wwn_enable)
2223 2224
		return -EINVAL;

2225
	/* lock setting wwpn, wwnn down */
2226
	phba->soft_wwn_enable = 0;
2227

2228 2229 2230 2231 2232
	rc = lpfc_wwn_set(buf, cnt, wwpn);
	if (!rc) {
		/* not able to set wwpn, unlock it */
		phba->soft_wwn_enable = 1;
		return rc;
2233
	}
2234

2235
	phba->cfg_soft_wwpn = wwn_to_u64(wwpn);
J
James Smart 已提交
2236
	fc_host_port_name(shost) = phba->cfg_soft_wwpn;
2237
	if (phba->cfg_soft_wwnn)
J
James Smart 已提交
2238
		fc_host_node_name(shost) = phba->cfg_soft_wwnn;
2239 2240 2241 2242

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

2243
	stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
2244 2245
	if (stat1)
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2246 2247
				"0463 lpfc_soft_wwpn attribute set failed to "
				"reinit adapter - %d\n", stat1);
2248
	init_completion(&online_compl);
2249 2250 2251 2252 2253
	rc = lpfc_workq_post_event(phba, &stat2, &online_compl,
				   LPFC_EVT_ONLINE);
	if (rc == 0)
		return -ENOMEM;

2254 2255 2256
	wait_for_completion(&online_compl);
	if (stat2)
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2257 2258
				"0464 lpfc_soft_wwpn attribute set failed to "
				"reinit adapter - %d\n", stat2);
2259 2260
	return (stat1 || stat2) ? -EIO : count;
}
2261
static DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO | S_IWUSR,
2262
		   lpfc_soft_wwpn_show, lpfc_soft_wwpn_store);
2263

2264
/**
2265
 * lpfc_soft_wwnn_show - Return the cfg soft ww node name for the adapter
2266 2267
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
2268
 * @buf: on return contains the wwnn in hexadecimal.
2269 2270 2271
 *
 * Returns: size of formatted string.
 **/
2272
static ssize_t
2273 2274
lpfc_soft_wwnn_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
2275
{
2276
	struct Scsi_Host *shost = class_to_shost(dev);
2277
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2278 2279 2280 2281
	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
			(unsigned long long)phba->cfg_soft_wwnn);
}

2282
/**
2283
 * lpfc_soft_wwnn_store - sets the ww node name of the adapter
2284
 * @cdev: class device that is converted into a Scsi_host.
2285
 * @buf: contains the ww node name in hexadecimal.
2286 2287 2288 2289 2290 2291
 * @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
 **/
2292
static ssize_t
2293 2294
lpfc_soft_wwnn_store(struct device *dev, struct device_attribute *attr,
		     const char *buf, size_t count)
2295
{
2296
	struct Scsi_Host *shost = class_to_shost(dev);
2297
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2298 2299 2300
	unsigned int cnt = count;
	u8 wwnn[WWN_SZ];
	int rc;
2301 2302 2303 2304 2305

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

2306
	if (!phba->soft_wwn_enable)
2307 2308
		return -EINVAL;

2309 2310 2311 2312 2313 2314
	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;
2315
	}
2316

2317 2318 2319 2320 2321 2322 2323 2324
	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;
}
2325
static DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO | S_IWUSR,
2326
		   lpfc_soft_wwnn_show, lpfc_soft_wwnn_store);
2327

2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 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 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 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 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 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 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756
/**
 * lpfc_oas_tgt_show - Return wwpn of target whose luns maybe enabled for
 *		      Optimized Access Storage (OAS) operations.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: buffer for passing information.
 *
 * Returns:
 * value of count
 **/
static ssize_t
lpfc_oas_tgt_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;

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

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

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

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

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

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

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

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

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

	if (!phba->cfg_EnableXLane)
		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;
	phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN;
	return count;
}
static DEVICE_ATTR(lpfc_xlane_vpt, S_IRUGO | S_IWUSR,
		   lpfc_oas_vpt_show, lpfc_oas_vpt_store);

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

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

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

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

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

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

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

	phba->cfg_oas_lun_state = val;

	return strlen(buf);
}
static DEVICE_ATTR(lpfc_xlane_lun_state, S_IRUGO | S_IWUSR,
		   lpfc_oas_lun_state_show, lpfc_oas_lun_state_store);

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

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

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


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

	int rc = 0;

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

	if (oas_state) {
		if (!lpfc_enable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
					 (struct lpfc_name *)tgt_wwpn, lun))
			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,
			  uint32_t oas_state)
{

	int rc;

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

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

	uint64_t oas_lun;
	int len = 0;

	if (!phba->cfg_EnableXLane)
		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;

	if (!phba->cfg_EnableXLane)
		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,
			"3372 Try to set vport 0x%llx target 0x%llx lun:%lld "
			"with oas set to %d\n",
			wwn_to_u64(phba->cfg_oas_vpt_wwpn),
			wwn_to_u64(phba->cfg_oas_tgt_wwpn), scsi_lun,
			phba->cfg_oas_lun_state);

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

	if (rc)
		return rc;

	return count;
}
static DEVICE_ATTR(lpfc_xlane_lun, S_IRUGO | S_IWUSR,
		   lpfc_oas_lun_show, lpfc_oas_lun_store);
2757

2758
static int lpfc_poll = 0;
2759
module_param(lpfc_poll, int, S_IRUGO);
2760 2761 2762 2763 2764
MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:"
		 " 0 - none,"
		 " 1 - poll with interrupts enabled"
		 " 3 - poll and disable FCP ring interrupts");

2765 2766
static DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR,
		   lpfc_poll_show, lpfc_poll_store);
已提交
2767

2768
int  lpfc_sli_mode = 0;
2769
module_param(lpfc_sli_mode, int, S_IRUGO);
2770 2771 2772 2773 2774
MODULE_PARM_DESC(lpfc_sli_mode, "SLI mode selector:"
		 " 0 - auto (SLI-3 if supported),"
		 " 2 - select SLI-2 even on SLI-3 capable HBAs,"
		 " 3 - select SLI-3");

2775
int lpfc_enable_npiv = 1;
2776
module_param(lpfc_enable_npiv, int, S_IRUGO);
J
James Smart 已提交
2777 2778
MODULE_PARM_DESC(lpfc_enable_npiv, "Enable NPIV functionality");
lpfc_param_show(enable_npiv);
J
James Smart 已提交
2779
lpfc_param_init(enable_npiv, 1, 0, 1);
2780
static DEVICE_ATTR(lpfc_enable_npiv, S_IRUGO, lpfc_enable_npiv_show, NULL);
2781

2782 2783 2784
LPFC_ATTR_R(fcf_failover_policy, 1, 1, 2,
	"FCF Fast failover=1 Priority failover=2");

2785
int lpfc_enable_rrq = 2;
2786
module_param(lpfc_enable_rrq, int, S_IRUGO);
2787 2788
MODULE_PARM_DESC(lpfc_enable_rrq, "Enable RRQ functionality");
lpfc_param_show(enable_rrq);
2789 2790 2791 2792 2793 2794 2795
/*
# lpfc_enable_rrq: Track XRI/OXID reuse after IO failures
#	0x0 = disabled, XRI/OXID use not tracked.
#	0x1 = XRI/OXID reuse is timed with ratov, RRQ sent.
#	0x2 = XRI/OXID reuse is timed with ratov, No RRQ sent.
*/
lpfc_param_init(enable_rrq, 2, 0, 2);
2796 2797
static DEVICE_ATTR(lpfc_enable_rrq, S_IRUGO, lpfc_enable_rrq_show, NULL);

2798 2799 2800 2801 2802 2803 2804
/*
# 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.
*/
2805 2806 2807
LPFC_ATTR_R(suppress_link_up, LPFC_INITIALIZE_LINK, LPFC_INITIALIZE_LINK,
		LPFC_DELAY_INIT_LINK_INDEFINITELY,
		"Suppress Link Up at initialization");
2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853
/*
# 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);

int lpfc_iocb_cnt = 2;
2854
module_param(lpfc_iocb_cnt, int, S_IRUGO);
2855 2856 2857 2858 2859 2860
MODULE_PARM_DESC(lpfc_iocb_cnt,
	"Number of IOCBs alloc for ELS, CT, and ABTS: 1k to 5k IOCBs");
lpfc_param_show(iocb_cnt);
lpfc_param_init(iocb_cnt, 2, 1, 5);
static DEVICE_ATTR(lpfc_iocb_cnt, S_IRUGO,
			 lpfc_iocb_cnt_show, NULL);
2861

2862 2863 2864 2865 2866 2867 2868 2869 2870 2871
/*
# 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");
2872 2873

/**
2874
 * lpfc_nodev_tmo_show - Return the hba dev loss timeout value
2875 2876 2877 2878 2879 2880
 * @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.
 **/
2881
static ssize_t
2882 2883
lpfc_nodev_tmo_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
2884
{
2885
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
2886
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2887

2888
	return snprintf(buf, PAGE_SIZE, "%d\n",	vport->cfg_devloss_tmo);
2889 2890
}

2891
/**
2892
 * lpfc_nodev_tmo_init - Set the hba nodev timeout value
2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905
 * @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
 **/
2906
static int
2907 2908 2909 2910 2911
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)
2912
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2913
					 "0407 Ignoring nodev_tmo module "
2914 2915
					 "parameter because devloss_tmo is "
					 "set.\n");
2916 2917 2918 2919
		return 0;
	}

	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
2920 2921
		vport->cfg_nodev_tmo = val;
		vport->cfg_devloss_tmo = val;
2922 2923
		return 0;
	}
2924 2925 2926 2927
	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);
2928
	vport->cfg_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
2929 2930 2931
	return -EINVAL;
}

2932
/**
2933
 * lpfc_update_rport_devloss_tmo - Update dev loss tmo value
2934 2935 2936 2937 2938
 * @vport: lpfc vport structure pointer.
 *
 * Description:
 * Update all the ndlp's dev loss tmo with the vport devloss tmo value.
 **/
2939
static void
2940
lpfc_update_rport_devloss_tmo(struct lpfc_vport *vport)
2941
{
J
James Smart 已提交
2942
	struct Scsi_Host  *shost;
2943 2944
	struct lpfc_nodelist  *ndlp;

2945 2946 2947
	shost = lpfc_shost_from_vport(vport);
	spin_lock_irq(shost->host_lock);
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp)
2948
		if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport)
2949 2950
			ndlp->rport->dev_loss_tmo = vport->cfg_devloss_tmo;
	spin_unlock_irq(shost->host_lock);
2951 2952
}

2953
/**
2954
 * lpfc_nodev_tmo_set - Set the vport nodev tmo and devloss tmo values
2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967
 * @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
 **/
2968
static int
2969
lpfc_nodev_tmo_set(struct lpfc_vport *vport, int val)
2970
{
2971 2972
	if (vport->dev_loss_tmo_changed ||
	    (lpfc_devloss_tmo != LPFC_DEF_DEVLOSS_TMO)) {
2973 2974 2975
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
				 "0401 Ignoring change to nodev_tmo "
				 "because devloss_tmo is set.\n");
2976 2977 2978
		return 0;
	}
	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
2979 2980
		vport->cfg_nodev_tmo = val;
		vport->cfg_devloss_tmo = val;
2981 2982 2983 2984 2985
		/*
		 * 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;
2986
		lpfc_update_rport_devloss_tmo(vport);
2987 2988
		return 0;
	}
2989 2990 2991 2992
	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
			 "0403 lpfc_nodev_tmo attribute cannot be set to"
			 "%d, allowed range is [%d, %d]\n",
			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
2993 2994 2995
	return -EINVAL;
}

2996
lpfc_vport_param_store(nodev_tmo)
2997

2998 2999
static DEVICE_ATTR(lpfc_nodev_tmo, S_IRUGO | S_IWUSR,
		   lpfc_nodev_tmo_show, lpfc_nodev_tmo_store);
3000 3001 3002 3003 3004 3005

/*
# 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.
*/
3006
module_param(lpfc_devloss_tmo, int, S_IRUGO);
3007 3008 3009
MODULE_PARM_DESC(lpfc_devloss_tmo,
		 "Seconds driver will hold I/O waiting "
		 "for a device to come back");
3010 3011 3012
lpfc_vport_param_init(devloss_tmo, LPFC_DEF_DEVLOSS_TMO,
		      LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO)
lpfc_vport_param_show(devloss_tmo)
3013 3014

/**
3015
 * lpfc_devloss_tmo_set - Sets vport nodev tmo, devloss tmo values, changed bit
3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027
 * @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
 **/
3028
static int
3029
lpfc_devloss_tmo_set(struct lpfc_vport *vport, int val)
3030 3031
{
	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
3032 3033 3034
		vport->cfg_nodev_tmo = val;
		vport->cfg_devloss_tmo = val;
		vport->dev_loss_tmo_changed = 1;
3035
		fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val;
3036
		lpfc_update_rport_devloss_tmo(vport);
3037 3038 3039
		return 0;
	}

3040 3041 3042 3043
	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
			 "0404 lpfc_devloss_tmo attribute cannot be set to"
			 " %d, allowed range is [%d, %d]\n",
			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
3044 3045 3046
	return -EINVAL;
}

3047
lpfc_vport_param_store(devloss_tmo)
3048 3049
static DEVICE_ATTR(lpfc_devloss_tmo, S_IRUGO | S_IWUSR,
		   lpfc_devloss_tmo_show, lpfc_devloss_tmo_store);
3050

已提交
3051 3052 3053 3054
/*
# 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:
3055
# See lpfc_logmsh.h for definitions.
已提交
3056
*/
3057
LPFC_VPORT_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffffffff,
3058
		       "Verbose logging bit-mask");
已提交
3059

J
James Smart 已提交
3060 3061 3062 3063
/*
# lpfc_enable_da_id: This turns on the DA_ID CT command that deregisters
# objects that have been registered with the nameserver after login.
*/
3064
LPFC_VPORT_ATTR_R(enable_da_id, 1, 0, 1,
J
James Smart 已提交
3065 3066
		  "Deregister nameserver objects before LOGO");

已提交
3067 3068
/*
# lun_queue_depth:  This parameter is used to limit the number of outstanding
3069 3070 3071 3072
# 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
3073
*/
3074
LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1, 512,
3075
		  "Max number of FCP commands we can queue to a specific LUN");
已提交
3076

3077 3078 3079 3080 3081
/*
# 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,
3082
		  "Max number of FCP commands we can queue to a specific target port");
3083

3084 3085 3086 3087 3088 3089 3090 3091 3092 3093
/*
# 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");

3094 3095 3096 3097 3098 3099 3100 3101 3102
/*
# 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.
*/
3103 3104 3105
LPFC_VPORT_ATTR_R(peer_port_login, 0, 0, 1,
		  "Allow peer ports on the same physical port to login to each "
		  "other.");
3106 3107

/*
3108
# restrict_login:  This parameter allows/prevents logins
3109 3110 3111 3112 3113 3114 3115 3116 3117
# 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.
*/
3118
static int lpfc_restrict_login = 1;
3119
module_param(lpfc_restrict_login, int, S_IRUGO);
3120 3121 3122 3123
MODULE_PARM_DESC(lpfc_restrict_login,
		 "Restrict virtual ports login to remote initiators.");
lpfc_vport_param_show(restrict_login);

3124
/**
3125
 * lpfc_restrict_login_init - Set the vport restrict login flag
3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138
 * @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
 **/
3139 3140 3141 3142
static int
lpfc_restrict_login_init(struct lpfc_vport *vport, int val)
{
	if (val < 0 || val > 1) {
3143
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3144
				 "0422 lpfc_restrict_login attribute cannot "
3145 3146
				 "be set to %d, allowed range is [0, 1]\n",
				 val);
3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157
		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;
}

3158
/**
3159
 * lpfc_restrict_login_set - Set the vport restrict login flag
3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173
 * @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
 **/
3174 3175 3176 3177
static int
lpfc_restrict_login_set(struct lpfc_vport *vport, int val)
{
	if (val < 0 || val > 1) {
3178
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3179
				 "0425 lpfc_restrict_login attribute cannot "
3180 3181
				 "be set to %d, allowed range is [0, 1]\n",
				 val);
3182 3183 3184 3185
		vport->cfg_restrict_login = 1;
		return -EINVAL;
	}
	if (vport->port_type == LPFC_PHYSICAL_PORT && val != 0) {
3186 3187 3188
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
				 "0468 lpfc_restrict_login must be 0 for "
				 "Physical ports.\n");
3189 3190 3191 3192 3193 3194 3195
		vport->cfg_restrict_login = 0;
		return 0;
	}
	vport->cfg_restrict_login = val;
	return 0;
}
lpfc_vport_param_store(restrict_login);
3196 3197
static DEVICE_ATTR(lpfc_restrict_login, S_IRUGO | S_IWUSR,
		   lpfc_restrict_login_show, lpfc_restrict_login_store);
3198

已提交
3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215
/*
# 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.)
*/
3216 3217
LPFC_VPORT_ATTR_R(scan_down, 1, 0, 1,
		  "Start scanning for devices from highest ALPA to lowest");
已提交
3218 3219 3220 3221

/*
# lpfc_topology:  link topology for init link
#            0x0  = attempt loop mode then point-to-point
3222
#            0x01 = internal loopback mode
已提交
3223 3224 3225 3226 3227 3228 3229
#            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.
*/
3230 3231

/**
3232
 * lpfc_topology_set - Set the adapters topology field
3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246
 * @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
 **/
3247 3248 3249
static ssize_t
lpfc_topology_store(struct device *dev, struct device_attribute *attr,
			const char *buf, size_t count)
3250
{
3251 3252 3253 3254 3255 3256
	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;
3257 3258
	int err;
	uint32_t prev_val;
3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269

	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;

3270 3271 3272
	if (val >= 0 && val <= 6) {
		prev_val = phba->cfg_topology;
		phba->cfg_topology = val;
3273 3274 3275 3276 3277 3278 3279 3280
		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",
				phba->cfg_link_speed);
			phba->cfg_topology = prev_val;
			return -EINVAL;
		}
3281 3282 3283
		if (nolip)
			return strlen(buf);

3284 3285 3286
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
			"3054 lpfc_topology changed from %d to %d\n",
			prev_val, val);
3287 3288
		if (prev_val != val && phba->sli_rev == LPFC_SLI_REV4)
			phba->fc_topology_changed = 1;
3289
		err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
3290
		if (err) {
3291
			phba->cfg_topology = prev_val;
3292 3293 3294
			return -EINVAL;
		} else
			return strlen(buf);
3295 3296 3297 3298 3299 3300 3301 3302
	}
	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;
}
static int lpfc_topology = 0;
3303
module_param(lpfc_topology, int, S_IRUGO);
3304 3305 3306
MODULE_PARM_DESC(lpfc_topology, "Select Fibre Channel topology");
lpfc_param_show(topology)
lpfc_param_init(topology, 0, 0, 6)
3307
static DEVICE_ATTR(lpfc_topology, S_IRUGO | S_IWUSR,
3308
		lpfc_topology_show, lpfc_topology_store);
已提交
3309

3310 3311 3312 3313 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
/**
 * 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);
3340 3341

/**
3342
 * lpfc_stat_data_ctrl_store - write call back for lpfc_stat_data_ctrl sysfs file
3343 3344 3345 3346 3347 3348 3349 3350 3351 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
 * @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"))) {
3377
		if (strlen(buf) > (LPFC_MAX_DATA_CTRL_LEN - 1))
3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414
			return -EINVAL;

		strcpy(bucket_data, buf);
		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;

3415
		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429
			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;

3430
		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446
			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;

3447
		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
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 3477 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
			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;
}


/**
3506
 * lpfc_stat_data_ctrl_show - Read function for lpfc_stat_data_ctrl sysfs file
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 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582
 * @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)


/**
3583
 * sysfs_drvr_stat_data_read - Read function for lpfc_drvr_stat_data attribute
3584
 * @filp: sysfs file
3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595
 * @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
3596 3597
sysfs_drvr_stat_data_read(struct file *filp, struct kobject *kobj,
		struct bin_attribute *bin_attr,
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 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666
		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
3667 3668 3669
/*
# lpfc_link_speed: Link speed selection for initializing the Fibre Channel
# connection.
3670
# Value range is [0,16]. Default value is 0.
已提交
3671
*/
3672
/**
3673
 * lpfc_link_speed_set - Set the adapters link speed
3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688
 * @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
 **/
3689 3690 3691
static ssize_t
lpfc_link_speed_store(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
3692
{
3693 3694 3695
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
3696
	int val = LPFC_USER_LINK_SPEED_AUTO;
3697 3698
	int nolip = 0;
	const char *val_buf = buf;
3699 3700 3701
	int err;
	uint32_t prev_val;

3702 3703 3704 3705 3706 3707 3708 3709 3710 3711
	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;

3712 3713 3714 3715
	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)");

3716 3717 3718 3719 3720 3721 3722 3723 3724 3725
	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)) ||
	    ((val == LPFC_USER_LINK_SPEED_16G) && !(phba->lmt & LMT_16Gb))) {
		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);
3726
		return -EINVAL;
3727
	}
3728 3729 3730 3731 3732 3733 3734 3735
	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;
	}
3736 3737
	if ((val >= 0) && (val <= LPFC_USER_LINK_SPEED_MAX) &&
	    (LPFC_USER_LINK_SPEED_BITMAP & (1 << val))) {
3738 3739
		prev_val = phba->cfg_link_speed;
		phba->cfg_link_speed = val;
3740 3741 3742
		if (nolip)
			return strlen(buf);

3743
		err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
3744
		if (err) {
3745
			phba->cfg_link_speed = prev_val;
3746 3747 3748
			return -EINVAL;
		} else
			return strlen(buf);
3749 3750
	}
	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3751 3752
		"0469 lpfc_link_speed attribute cannot be set to %d, "
		"allowed values are ["LPFC_LINK_SPEED_STRING"]\n", val);
3753 3754 3755 3756
	return -EINVAL;
}

static int lpfc_link_speed = 0;
3757
module_param(lpfc_link_speed, int, S_IRUGO);
3758 3759
MODULE_PARM_DESC(lpfc_link_speed, "Select link speed");
lpfc_param_show(link_speed)
3760 3761

/**
3762
 * lpfc_link_speed_init - Set the adapters link speed
3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776
 * @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
 **/
3777 3778 3779
static int
lpfc_link_speed_init(struct lpfc_hba *phba, int val)
{
3780 3781 3782 3783 3784 3785 3786
	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;
	}
3787 3788
	if ((val >= 0) && (val <= LPFC_USER_LINK_SPEED_MAX) &&
	    (LPFC_USER_LINK_SPEED_BITMAP & (1 << val))) {
3789 3790 3791 3792
		phba->cfg_link_speed = val;
		return 0;
	}
	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3793
			"0405 lpfc_link_speed attribute cannot "
3794 3795
			"be set to %d, allowed values are "
			"["LPFC_LINK_SPEED_STRING"]\n", val);
3796
	phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
3797 3798 3799
	return -EINVAL;
}

3800
static DEVICE_ATTR(lpfc_link_speed, S_IRUGO | S_IWUSR,
3801
		   lpfc_link_speed_show, lpfc_link_speed_store);
已提交
3802

J
James Smart 已提交
3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814
/*
# 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.
*/

/**
 * 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.
3815
 * @buf: containing enable or disable aer flag.
J
James Smart 已提交
3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861
 * @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
3862 3863
				rc = -EPERM;
		} else {
J
James Smart 已提交
3864
			phba->cfg_aer_support = 0;
J
James Smart 已提交
3865 3866
			rc = strlen(buf);
		}
J
James Smart 已提交
3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877
		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
3878 3879
				 rc = -EPERM;
		} else {
J
James Smart 已提交
3880
			phba->cfg_aer_support = 1;
J
James Smart 已提交
3881 3882
			rc = strlen(buf);
		}
J
James Smart 已提交
3883 3884 3885 3886 3887 3888 3889 3890 3891
		break;
	default:
		rc = -EINVAL;
		break;
	}
	return rc;
}

static int lpfc_aer_support = 1;
3892
module_param(lpfc_aer_support, int, S_IRUGO);
J
James Smart 已提交
3893 3894 3895 3896 3897 3898
MODULE_PARM_DESC(lpfc_aer_support, "Enable PCIe device AER support");
lpfc_param_show(aer_support)

/**
 * lpfc_aer_support_init - Set the initial adapters aer support flag
 * @phba: lpfc_hba pointer.
3899
 * @val: enable aer or disable aer flag.
J
James Smart 已提交
3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925
 *
 * Description:
 * If val is in a valid range [0,1], then set the adapter's initial
 * cfg_aer_support field. It will be up to the driver's probe_one
 * routine to determine whether the device's AER support can be set
 * or not.
 *
 * Notes:
 * If the value is not in range log a kernel error message, and
 * choose the default value of setting AER support and return.
 *
 * Returns:
 * zero if val saved.
 * -EINVAL val out of range
 **/
static int
lpfc_aer_support_init(struct lpfc_hba *phba, int val)
{
	if (val == 0 || val == 1) {
		phba->cfg_aer_support = val;
		return 0;
	}
	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
			"2712 lpfc_aer_support attribute value %d out "
			"of range, allowed values are 0|1, setting it "
			"to default value of 1\n", val);
J
James Smart 已提交
3926
	/* By default, try to enable AER on a device */
J
James Smart 已提交
3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937
	phba->cfg_aer_support = 1;
	return -EINVAL;
}

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.
3938
 * @buf: containing flag 1 for aer cleanup state.
J
James Smart 已提交
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
 * @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
3966 3967
	if (val != 1)
		return -EINVAL;
J
James Smart 已提交
3968

J
James Smart 已提交
3969
	if (phba->hba_flag & HBA_AER_ENABLED)
J
James Smart 已提交
3970 3971 3972 3973 3974
		rc = pci_cleanup_aer_uncorrect_error_status(phba->pcidev);

	if (rc == 0)
		return strlen(buf);
	else
J
James Smart 已提交
3975
		return -EPERM;
J
James Smart 已提交
3976 3977 3978 3979 3980
}

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

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 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 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 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110
/**
 * 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;
}

static int lpfc_sriov_nr_virtfn = LPFC_DEF_VFN_PER_PFN;
module_param(lpfc_sriov_nr_virtfn, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(lpfc_sriov_nr_virtfn, "Enable PCIe device SR-IOV virtual fn");
lpfc_param_show(sriov_nr_virtfn)

/**
 * lpfc_sriov_nr_virtfn_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 [0,255], then set the adapter's initial
 * cfg_sriov_nr_virtfn field. If it's greater than the maximum, the maximum
 * number shall be used instead. It will be up to the driver's probe_one
 * routine to determine whether the device's SR-IOV is supported or not.
 *
 * Returns:
 * zero if val saved.
 * -EINVAL val out of range
 **/
static int
lpfc_sriov_nr_virtfn_init(struct lpfc_hba *phba, int val)
{
	if (val >= 0 && val <= LPFC_MAX_VFN_PER_PFN) {
		phba->cfg_sriov_nr_virtfn = val;
		return 0;
	}

	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
			"3017 Enabling %d virtual functions is not "
			"allowed.\n", val);
	return -EINVAL;
}
static DEVICE_ATTR(lpfc_sriov_nr_virtfn, S_IRUGO | S_IWUSR,
		   lpfc_sriov_nr_virtfn_show, lpfc_sriov_nr_virtfn_store);

4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181
/**
 * 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);

4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207
/**
 * 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;

4208 4209 4210 4211
	/* fcp_imax is only valid for SLI4 */
	if (phba->sli_rev != LPFC_SLI_REV4)
		return -EINVAL;

4212 4213 4214 4215 4216 4217
	/* Sanity check on user data */
	if (!isdigit(buf[0]))
		return -EINVAL;
	if (sscanf(buf, "%i", &val) != 1)
		return -EINVAL;

4218 4219 4220 4221 4222
	/*
	 * 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)
4223 4224 4225
		return -EINVAL;

	phba->cfg_fcp_imax = (uint32_t)val;
4226
	for (i = 0; i < phba->cfg_fcp_io_channel; i += LPFC_MAX_EQ_DELAY)
4227 4228 4229 4230 4231 4232 4233
		lpfc_modify_fcp_eq_delay(phba, i);

	return strlen(buf);
}

/*
# lpfc_fcp_imax: The maximum number of fast-path FCP interrupts per second
4234
# for the HBA.
4235
#
4236
# Value range is [5,000 to 5,000,000]. Default value is 50,000.
4237
*/
4238
static int lpfc_fcp_imax = LPFC_DEF_IMAX;
4239 4240
module_param(lpfc_fcp_imax, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(lpfc_fcp_imax,
4241
	    "Set the maximum number of FCP interrupts per second per HBA");
4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259
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)
{
4260 4261 4262 4263 4264 4265
	if (phba->sli_rev != LPFC_SLI_REV4) {
		phba->cfg_fcp_imax = 0;
		return 0;
	}

	if (val >= LPFC_MIN_IMAX && val <= LPFC_MAX_IMAX) {
4266 4267 4268 4269 4270 4271
		phba->cfg_fcp_imax = val;
		return 0;
	}

	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
			"3016 fcp_imax: %d out of range, using default\n", val);
4272
	phba->cfg_fcp_imax = LPFC_DEF_IMAX;
4273 4274 4275 4276 4277 4278 4279

	return 0;
}

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

4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295
/**
 * 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;
4296
	int  len = 0;
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

	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;
	}

4324 4325 4326 4327
	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 */
4328 4329 4330 4331
		if (cpup->irq == LPFC_VECTOR_MAP_EMPTY)
			len += snprintf(buf + len, PAGE_SIZE-len,
					"CPU %02d io_chan %02d "
					"physid %d coreid %d\n",
4332 4333
					phba->sli4_hba.curr_disp_cpu,
					cpup->channel_id, cpup->phys_id,
4334 4335 4336 4337 4338
					cpup->core_id);
		else
			len += snprintf(buf + len, PAGE_SIZE-len,
					"CPU %02d io_chan %02d "
					"physid %d coreid %d IRQ %d\n",
4339 4340
					phba->sli4_hba.curr_disp_cpu,
					cpup->channel_id, cpup->phys_id,
4341 4342
					cpup->core_id, cpup->irq);

4343 4344 4345 4346 4347 4348 4349 4350 4351
		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;
		}
4352
	}
4353 4354 4355 4356

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

4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430
	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,
			"3326 fcp_cpu_map: %d out of range, using default\n",
			val);
	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
4431 4432 4433 4434
/*
# lpfc_fcp_class:  Determines FC class to use for the FCP protocol.
# Value range is [2,3]. Default value is 3.
*/
4435 4436
LPFC_VPORT_ATTR_R(fcp_class, 3, 2, 3,
		  "Select Fibre Channel class of service for FCP sequences");
已提交
4437 4438 4439 4440 4441

/*
# lpfc_use_adisc: Use ADISC for FCP rediscovery instead of PLOGI. Value range
# is [0,1]. Default value is 0.
*/
4442 4443
LPFC_VPORT_ATTR_RW(use_adisc, 0, 0, 1,
		   "Use ADISC on rediscovery to authenticate FCP devices");
已提交
4444

4445 4446 4447 4448 4449 4450 4451 4452
/*
# 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");

4453 4454 4455 4456 4457 4458 4459 4460 4461
/*
# 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.
*/
static int lpfc_max_scsicmpl_time;
4462
module_param(lpfc_max_scsicmpl_time, int, S_IRUGO);
4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484
MODULE_PARM_DESC(lpfc_max_scsicmpl_time,
	"Use command completion time to control queue depth");
lpfc_vport_param_show(max_scsicmpl_time);
lpfc_vport_param_init(max_scsicmpl_time, 0, 0, 60000);
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;
4485
		ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4486 4487 4488 4489 4490 4491 4492 4493 4494
	}
	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
4495 4496 4497 4498 4499 4500
/*
# 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");

4501 4502 4503 4504 4505 4506
/*
# 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.
4507 4508 4509
# 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.
4510
*/
4511
LPFC_ATTR_RW(fcp_io_sched, 0, 0, 1, "Determine scheduling algorithm for "
4512 4513
		"issuing commands [0] - Round Robin, [1] - Current CPU");

4514 4515 4516 4517 4518 4519 4520 4521 4522 4523
/*
# 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
4524 4525 4526
/*
# lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing
# cr_delay (msec) or cr_count outstanding commands. cr_delay can take
4527
# value [0,63]. cr_count can take value [1,255]. Default value of cr_delay
已提交
4528 4529 4530
# is 0. Default value of cr_count is 1. The cr_count feature is disabled if
# cr_delay is set to 0.
*/
4531
LPFC_ATTR_RW(cr_delay, 0, 0, 63, "A count of milliseconds after which an "
已提交
4532 4533
		"interrupt response is generated");

4534
LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an "
已提交
4535 4536
		"interrupt response is generated");

4537 4538 4539 4540 4541 4542 4543 4544
/*
# 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");

4545 4546 4547 4548 4549
/*
# 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).
*/
4550
LPFC_ATTR_R(multi_ring_rctl, FC_RCTL_DD_UNSOL_DATA, 1,
4551 4552 4553 4554 4555 4556 4557
	     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).
*/
4558
LPFC_ATTR_R(multi_ring_type, FC_TYPE_IP, 1,
4559 4560
	     255, "Identifies TYPE for additional ring configuration");

已提交
4561 4562 4563 4564 4565 4566 4567
/*
# lpfc_fdmi_on: controls FDMI support.
#       0 = no FDMI support
#       1 = support FDMI without attribute of hostname
#       2 = support FDMI with attribute of hostname
# Value range [0,2]. Default value is 0.
*/
4568
LPFC_VPORT_ATTR_RW(fdmi_on, 0, 0, 2, "Enable FDMI support");
已提交
4569 4570 4571 4572 4573

/*
# Specifies the maximum number of ELS cmds we can have outstanding (for
# discovery). Value range is [1,64]. Default value = 32.
*/
4574
LPFC_VPORT_ATTR(discovery_threads, 32, 1, 64, "Maximum number of ELS commands "
已提交
4575 4576 4577
		 "during discovery");

/*
4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595
# 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
4596 4597
# 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
4598
*/
4599
LPFC_VPORT_ATTR_R(max_luns, 255, 0, 65535, "Maximum allowed LUN ID");
已提交
4600

4601 4602 4603 4604 4605 4606 4607
/*
# 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");

4608
/*
4609 4610 4611 4612 4613 4614
# 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");
/*
4615 4616
# lpfc_use_msi: Use MSI (Message Signaled Interrupts) in systems that
#		support this feature
4617
#       0  = MSI disabled
4618
#       1  = MSI enabled
4619 4620
#       2  = MSI-X enabled (default)
# Value range is [0,2]. Default value is 2.
4621
*/
4622
LPFC_ATTR_R(use_msi, 2, 0, 2, "Use Message Signaled Interrupts (1) or "
4623
	    "MSI-X (2), if possible");
4624

4625 4626 4627 4628 4629 4630 4631 4632 4633
/*
# 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");

4634 4635 4636 4637 4638 4639 4640
/*
# 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.");
4641

4642
/*
4643
# lpfc_enable_hba_heartbeat: Disable HBA heartbeat timer..
4644 4645 4646 4647
#       0  = HBA Heartbeat disabled
#       1  = HBA Heartbeat enabled (default)
# Value range is [0,1]. Default value is 1.
*/
4648
LPFC_ATTR_R(enable_hba_heartbeat, 0, 0, 1, "Enable HBA Heartbeat.");
4649

4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664
/*
# 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
*/
LPFC_ATTR_R(XLanePriority, 0, 0x0, 0x7f, "CS_CTL for Express Lane Feature.");

4665 4666 4667 4668 4669 4670 4671 4672
/*
# 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");

4673 4674 4675 4676 4677
/*
# 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.
4678 4679
#
# This feature in under investigation and may be supported in the future.
4680 4681 4682
*/
unsigned int lpfc_fcp_look_ahead = LPFC_LOOK_AHEAD_OFF;

4683 4684 4685 4686 4687 4688 4689
/*
# 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.
4690 4691 4692 4693 4694 4695
#	- 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
4696 4697
#
*/
J
James Smart 已提交
4698 4699 4700
unsigned int lpfc_prot_mask = SHOST_DIF_TYPE1_PROTECTION |
			      SHOST_DIX_TYPE0_PROTECTION |
			      SHOST_DIX_TYPE1_PROTECTION;
4701

4702
module_param(lpfc_prot_mask, uint, S_IRUGO);
4703 4704 4705 4706 4707
MODULE_PARM_DESC(lpfc_prot_mask, "host protection mask");

/*
# lpfc_prot_guard: i
#	- Bit mask of protection guard types to register with the SCSI mid-layer
4708
#	- Guard types are currently either 1) T10-DIF CRC 2) IP checksum
4709 4710 4711 4712 4713
#	- Allows you to ultimately specify which profiles to use
#	- Default will result in registering capabilities for all guard types
#
*/
unsigned char lpfc_prot_guard = SHOST_DIX_GUARD_IP;
4714
module_param(lpfc_prot_guard, byte, S_IRUGO);
4715 4716
MODULE_PARM_DESC(lpfc_prot_guard, "host protection guard type");

4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731
/*
 * 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.
 */
int lpfc_delay_discovery;
4732
module_param(lpfc_delay_discovery, int, S_IRUGO);
4733 4734 4735
MODULE_PARM_DESC(lpfc_delay_discovery,
	"Delay NPort discovery when Clean Address bit is cleared. "
	"Allowed values: 0,1.");
4736

4737
/*
4738
 * lpfc_sg_seg_cnt - Initial Maximum DMA Segment Count
4739
 * This value can be set to values between 64 and 4096. The default value is
4740 4741
 * 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).
4742 4743 4744
 * 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.
4745 4746 4747 4748
 */
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");

4749 4750 4751 4752 4753 4754 4755
/*
 * 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");
4756

4757
struct device_attribute *lpfc_hba_attrs[] = {
4758 4759 4760 4761
	&dev_attr_bg_info,
	&dev_attr_bg_guard_err,
	&dev_attr_bg_apptag_err,
	&dev_attr_bg_reftag_err,
4762 4763 4764 4765 4766 4767 4768 4769 4770
	&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,
4771
	&dev_attr_link_state,
4772
	&dev_attr_num_discovered_ports,
4773
	&dev_attr_menlo_mgmt_mode,
4774
	&dev_attr_lpfc_drvr_version,
4775
	&dev_attr_lpfc_enable_fip,
4776 4777 4778
	&dev_attr_lpfc_temp_sensor,
	&dev_attr_lpfc_log_verbose,
	&dev_attr_lpfc_lun_queue_depth,
4779
	&dev_attr_lpfc_tgt_queue_depth,
4780 4781 4782 4783 4784 4785
	&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,
4786
	&dev_attr_lpfc_first_burst_size,
4787 4788 4789 4790
	&dev_attr_lpfc_ack0,
	&dev_attr_lpfc_topology,
	&dev_attr_lpfc_scan_down,
	&dev_attr_lpfc_link_speed,
4791
	&dev_attr_lpfc_fcp_io_sched,
4792
	&dev_attr_lpfc_fcp2_no_tgt_reset,
4793 4794 4795 4796 4797 4798 4799 4800
	&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,
	&dev_attr_lpfc_max_luns,
	&dev_attr_lpfc_enable_npiv,
4801
	&dev_attr_lpfc_fcf_failover_policy,
4802
	&dev_attr_lpfc_enable_rrq,
4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814
	&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,
4815
	&dev_attr_lpfc_task_mgmt_tmo,
4816
	&dev_attr_lpfc_use_msi,
4817
	&dev_attr_lpfc_fcp_imax,
4818
	&dev_attr_lpfc_fcp_cpu_map,
4819
	&dev_attr_lpfc_fcp_io_channel,
4820
	&dev_attr_lpfc_enable_bg,
4821 4822 4823 4824 4825
	&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,
4826 4827 4828 4829 4830 4831 4832
	&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,
4833
	&dev_attr_lpfc_sg_seg_cnt,
4834
	&dev_attr_lpfc_max_scsicmpl_time,
4835
	&dev_attr_lpfc_stat_data_ctrl,
4836
	&dev_attr_lpfc_prot_sg_seg_cnt,
J
James Smart 已提交
4837 4838
	&dev_attr_lpfc_aer_support,
	&dev_attr_lpfc_aer_state_cleanup,
4839
	&dev_attr_lpfc_sriov_nr_virtfn,
4840
	&dev_attr_lpfc_req_fw_upgrade,
4841
	&dev_attr_lpfc_suppress_link_up,
4842 4843 4844 4845
	&dev_attr_lpfc_iocb_cnt,
	&dev_attr_iocb_hw,
	&dev_attr_txq_hw,
	&dev_attr_txcmplq_hw,
4846 4847
	&dev_attr_lpfc_fips_level,
	&dev_attr_lpfc_fips_rev,
4848
	&dev_attr_lpfc_dss,
4849
	&dev_attr_lpfc_sriov_hw_max_virtfn,
4850
	&dev_attr_protocol,
4851
	&dev_attr_lpfc_xlane_supported,
已提交
4852 4853 4854
	NULL,
};

4855 4856
struct device_attribute *lpfc_vport_attrs[] = {
	&dev_attr_info,
4857
	&dev_attr_link_state,
4858 4859 4860 4861
	&dev_attr_num_discovered_ports,
	&dev_attr_lpfc_drvr_version,
	&dev_attr_lpfc_log_verbose,
	&dev_attr_lpfc_lun_queue_depth,
4862
	&dev_attr_lpfc_tgt_queue_depth,
4863 4864 4865 4866 4867 4868 4869
	&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,
4870
	&dev_attr_lpfc_first_burst_size,
4871 4872 4873 4874 4875
	&dev_attr_lpfc_fdmi_on,
	&dev_attr_lpfc_max_luns,
	&dev_attr_nport_evt_cnt,
	&dev_attr_npiv_info,
	&dev_attr_lpfc_enable_da_id,
4876 4877
	&dev_attr_lpfc_max_scsicmpl_time,
	&dev_attr_lpfc_stat_data_ctrl,
4878
	&dev_attr_lpfc_static_vport,
4879 4880
	&dev_attr_lpfc_fips_level,
	&dev_attr_lpfc_fips_rev,
4881 4882 4883
	NULL,
};

4884
/**
4885
 * sysfs_ctlreg_write - Write method for writing to ctlreg
4886
 * @filp: open sysfs file
4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902
 * @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
4903
static ssize_t
4904 4905
sysfs_ctlreg_write(struct file *filp, struct kobject *kobj,
		   struct bin_attribute *bin_attr,
4906
		   char *buf, loff_t off, size_t count)
已提交
4907 4908
{
	size_t buf_off;
4909 4910
	struct device *dev = container_of(kobj, struct device, kobj);
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
4911 4912
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
已提交
4913

4914 4915 4916
	if (phba->sli_rev >= LPFC_SLI_REV4)
		return -EPERM;

已提交
4917 4918 4919
	if ((off + count) > FF_REG_AREA_SIZE)
		return -ERANGE;

4920 4921
	if (count <= LPFC_REG_WRITE_KEY_SIZE)
		return 0;
已提交
4922 4923 4924 4925

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

4926 4927 4928 4929 4930
	/* 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
4931 4932
		return -EPERM;

J
James Smart 已提交
4933
	spin_lock_irq(&phba->hbalock);
4934 4935 4936
	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
4937 4938
		       phba->ctrl_regs_memmap_p + off + buf_off);

J
James Smart 已提交
4939
	spin_unlock_irq(&phba->hbalock);
已提交
4940 4941 4942 4943

	return count;
}

4944
/**
4945
 * sysfs_ctlreg_read - Read method for reading from ctlreg
4946
 * @filp: open sysfs file
4947 4948
 * @kobj: kernel kobject that contains the kernel class device.
 * @bin_attr: kernel attributes passed to us.
4949
 * @buf: if successful contains the data from the adapter IOREG space.
4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961
 * @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
4962
static ssize_t
4963 4964
sysfs_ctlreg_read(struct file *filp, struct kobject *kobj,
		  struct bin_attribute *bin_attr,
4965
		  char *buf, loff_t off, size_t count)
已提交
4966 4967 4968
{
	size_t buf_off;
	uint32_t * tmp_ptr;
4969 4970
	struct device *dev = container_of(kobj, struct device, kobj);
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
4971 4972
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
已提交
4973

4974 4975 4976
	if (phba->sli_rev >= LPFC_SLI_REV4)
		return -EPERM;

已提交
4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987
	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
4988
	spin_lock_irq(&phba->hbalock);
已提交
4989 4990 4991 4992 4993 4994

	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
4995
	spin_unlock_irq(&phba->hbalock);
已提交
4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009

	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,
};

5010
/**
5011
 * sysfs_mbox_write - Write method for writing information via mbox
5012
 * @filp: open sysfs file
5013 5014 5015 5016 5017 5018 5019
 * @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:
5020 5021
 * Deprecated function. All mailbox access from user space is performed via the
 * bsg interface.
5022 5023
 *
 * Returns:
5024
 * -EPERM operation not permitted
5025
 **/
已提交
5026
static ssize_t
5027 5028
sysfs_mbox_write(struct file *filp, struct kobject *kobj,
		 struct bin_attribute *bin_attr,
5029
		 char *buf, loff_t off, size_t count)
已提交
5030
{
5031
	return -EPERM;
已提交
5032 5033
}

5034
/**
5035
 * sysfs_mbox_read - Read method for reading information via mbox
5036
 * @filp: open sysfs file
5037 5038 5039 5040 5041 5042 5043
 * @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:
5044 5045
 * Deprecated function. All mailbox access from user space is performed via the
 * bsg interface.
5046 5047
 *
 * Returns:
5048
 * -EPERM operation not permitted
5049
 **/
已提交
5050
static ssize_t
5051 5052
sysfs_mbox_read(struct file *filp, struct kobject *kobj,
		struct bin_attribute *bin_attr,
5053
		char *buf, loff_t off, size_t count)
已提交
5054
{
5055
	return -EPERM;
已提交
5056 5057 5058 5059 5060 5061 5062
}

static struct bin_attribute sysfs_mbox_attr = {
	.attr = {
		.name = "mbox",
		.mode = S_IRUSR | S_IWUSR,
	},
5063
	.size = MAILBOX_SYSFS_MAX,
已提交
5064 5065 5066 5067
	.read = sysfs_mbox_read,
	.write = sysfs_mbox_write,
};

5068
/**
5069
 * lpfc_alloc_sysfs_attr - Creates the ctlreg and mbox entries
5070 5071 5072 5073 5074 5075
 * @vport: address of lpfc vport structure.
 *
 * Return codes:
 * zero on success
 * error return code from sysfs_create_bin_file()
 **/
已提交
5076
int
J
James Smart 已提交
5077
lpfc_alloc_sysfs_attr(struct lpfc_vport *vport)
已提交
5078
{
J
James Smart 已提交
5079
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
5080 5081
	int error;

5082
	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
5083 5084 5085 5086
				      &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
5087 5088
		goto out;

5089
	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
5090
				      &sysfs_ctlreg_attr);
已提交
5091
	if (error)
5092
		goto out_remove_stat_attr;
已提交
5093

5094
	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
5095
				      &sysfs_mbox_attr);
5096
	if (error)
5097
		goto out_remove_ctlreg_attr;
5098

已提交
5099 5100
	return 0;
out_remove_ctlreg_attr:
5101
	sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
5102 5103 5104
out_remove_stat_attr:
	sysfs_remove_bin_file(&shost->shost_dev.kobj,
			&sysfs_drvr_stat_data_attr);
已提交
5105 5106 5107 5108
out:
	return error;
}

5109
/**
5110
 * lpfc_free_sysfs_attr - Removes the ctlreg and mbox entries
5111 5112
 * @vport: address of lpfc vport structure.
 **/
已提交
5113
void
J
James Smart 已提交
5114
lpfc_free_sysfs_attr(struct lpfc_vport *vport)
已提交
5115
{
J
James Smart 已提交
5116
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5117 5118
	sysfs_remove_bin_file(&shost->shost_dev.kobj,
		&sysfs_drvr_stat_data_attr);
5119 5120 5121
	/* Virtual ports do not need ctrl_reg and mbox */
	if (vport->port_type == LPFC_NPIV_PORT)
		return;
5122 5123
	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
5124 5125 5126 5127 5128 5129 5130
}


/*
 * Dynamic FC Host Attributes Support
 */

5131
/**
5132
 * lpfc_get_host_port_id - Copy the vport DID into the scsi host port id
5133 5134
 * @shost: kernel scsi host pointer.
 **/
已提交
5135 5136 5137
static void
lpfc_get_host_port_id(struct Scsi_Host *shost)
{
J
James Smart 已提交
5138 5139
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;

已提交
5140
	/* note: fc_myDID already in cpu endianness */
J
James Smart 已提交
5141
	fc_host_port_id(shost) = vport->fc_myDID;
已提交
5142 5143
}

5144
/**
5145
 * lpfc_get_host_port_type - Set the value of the scsi host port type
5146 5147
 * @shost: kernel scsi host pointer.
 **/
已提交
5148 5149 5150
static void
lpfc_get_host_port_type(struct Scsi_Host *shost)
{
J
James Smart 已提交
5151 5152
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
已提交
5153 5154 5155

	spin_lock_irq(shost->host_lock);

5156 5157 5158
	if (vport->port_type == LPFC_NPIV_PORT) {
		fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
	} else if (lpfc_is_link_up(phba)) {
5159
		if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
J
James Smart 已提交
5160
			if (vport->fc_flag & FC_PUBLIC_LOOP)
已提交
5161 5162 5163 5164
				fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
			else
				fc_host_port_type(shost) = FC_PORTTYPE_LPORT;
		} else {
J
James Smart 已提交
5165
			if (vport->fc_flag & FC_FABRIC)
已提交
5166 5167 5168 5169 5170 5171 5172 5173 5174 5175
				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);
}

5176
/**
5177
 * lpfc_get_host_port_state - Set the value of the scsi host port state
5178 5179
 * @shost: kernel scsi host pointer.
 **/
已提交
5180 5181 5182
static void
lpfc_get_host_port_state(struct Scsi_Host *shost)
{
J
James Smart 已提交
5183 5184
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
已提交
5185 5186 5187

	spin_lock_irq(shost->host_lock);

J
James Smart 已提交
5188
	if (vport->fc_flag & FC_OFFLINE_MODE)
已提交
5189 5190
		fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
	else {
J
James Smart 已提交
5191 5192
		switch (phba->link_state) {
		case LPFC_LINK_UNKNOWN:
已提交
5193 5194 5195 5196 5197 5198
		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:
5199 5200 5201 5202 5203 5204 5205
			/* 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
5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218
			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);
}

5219
/**
5220
 * lpfc_get_host_speed - Set the value of the scsi host speed
5221 5222
 * @shost: kernel scsi host pointer.
 **/
已提交
5223 5224 5225
static void
lpfc_get_host_speed(struct Scsi_Host *shost)
{
J
James Smart 已提交
5226 5227
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
已提交
5228 5229 5230

	spin_lock_irq(shost->host_lock);

J
James Smart 已提交
5231
	if (lpfc_is_link_up(phba)) {
已提交
5232
		switch(phba->fc_linkspeed) {
5233 5234
		case LPFC_LINK_SPEED_1GHZ:
			fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
已提交
5235
			break;
5236 5237
		case LPFC_LINK_SPEED_2GHZ:
			fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
已提交
5238
			break;
5239 5240
		case LPFC_LINK_SPEED_4GHZ:
			fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
已提交
5241
			break;
5242 5243
		case LPFC_LINK_SPEED_8GHZ:
			fc_host_speed(shost) = FC_PORTSPEED_8GBIT;
5244
			break;
5245 5246
		case LPFC_LINK_SPEED_10GHZ:
			fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
5247
			break;
5248 5249 5250 5251 5252
		case LPFC_LINK_SPEED_16GHZ:
			fc_host_speed(shost) = FC_PORTSPEED_16GBIT;
			break;
		default:
			fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
已提交
5253 5254
			break;
		}
5255 5256
	} else
		fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
已提交
5257 5258 5259 5260

	spin_unlock_irq(shost->host_lock);
}

5261
/**
5262
 * lpfc_get_host_fabric_name - Set the value of the scsi host fabric name
5263 5264
 * @shost: kernel scsi host pointer.
 **/
已提交
5265 5266 5267
static void
lpfc_get_host_fabric_name (struct Scsi_Host *shost)
{
J
James Smart 已提交
5268 5269
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
5270
	u64 node_name;
已提交
5271 5272 5273

	spin_lock_irq(shost->host_lock);

5274 5275 5276 5277
	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
5278
		node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
已提交
5279 5280
	else
		/* fabric is local port if there is no F/FL_Port */
5281
		node_name = 0;
已提交
5282 5283 5284

	spin_unlock_irq(shost->host_lock);

5285
	fc_host_fabric_name(shost) = node_name;
已提交
5286 5287
}

5288
/**
5289
 * lpfc_get_stats - Return statistical information about the adapter
5290 5291 5292 5293 5294 5295 5296 5297 5298 5299
 * @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
5300 5301 5302
static struct fc_host_statistics *
lpfc_get_stats(struct Scsi_Host *shost)
{
J
James Smart 已提交
5303 5304 5305
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	struct lpfc_sli   *psli = &phba->sli;
5306
	struct fc_host_statistics *hs = &phba->link_stats;
5307
	struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
已提交
5308 5309
	LPFC_MBOXQ_t *pmboxq;
	MAILBOX_t *pmb;
5310
	unsigned long seconds;
5311
	int rc = 0;
已提交
5312

5313 5314 5315 5316
	/*
	 * prevent udev from issuing mailbox commands until the port is
	 * configured.
	 */
J
James Smart 已提交
5317 5318
	if (phba->link_state < LPFC_LINK_DOWN ||
	    !phba->mbox_mem_pool ||
5319
	    (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
5320
		return NULL;
J
James Smart 已提交
5321 5322

	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
5323 5324
		return NULL;

已提交
5325 5326 5327 5328 5329
	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmboxq)
		return NULL;
	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));

5330
	pmb = &pmboxq->u.mb;
已提交
5331 5332 5333
	pmb->mbxCommand = MBX_READ_STATUS;
	pmb->mbxOwner = OWN_HOST;
	pmboxq->context1 = NULL;
5334
	pmboxq->vport = vport;
已提交
5335

5336
	if (vport->fc_flag & FC_OFFLINE_MODE)
已提交
5337
		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
5338
	else
已提交
5339 5340 5341
		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);

	if (rc != MBX_SUCCESS) {
J
James Smart 已提交
5342
		if (rc != MBX_TIMEOUT)
5343
			mempool_free(pmboxq, phba->mbox_mem_pool);
已提交
5344 5345 5346
		return NULL;
	}

5347 5348
	memset(hs, 0, sizeof (struct fc_host_statistics));

已提交
5349
	hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
5350 5351 5352 5353 5354 5355 5356
	/*
	 * 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
5357
	hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;
5358 5359 5360
	hs->rx_words = (uint64_t)
			((uint64_t)pmb->un.varRdStatus.rcvByteCnt
			 * (uint64_t)256);
已提交
5361

5362
	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
已提交
5363 5364 5365
	pmb->mbxCommand = MBX_READ_LNK_STAT;
	pmb->mbxOwner = OWN_HOST;
	pmboxq->context1 = NULL;
5366
	pmboxq->vport = vport;
已提交
5367

5368
	if (vport->fc_flag & FC_OFFLINE_MODE)
已提交
5369
		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
5370
	else
已提交
5371 5372 5373
		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);

	if (rc != MBX_SUCCESS) {
J
James Smart 已提交
5374
		if (rc != MBX_TIMEOUT)
5375
			mempool_free(pmboxq, phba->mbox_mem_pool);
已提交
5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386
		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;

5387 5388 5389 5390 5391 5392 5393 5394
	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;

5395
	if (phba->hba_flag & HBA_FCOE_MODE) {
5396 5397 5398
		hs->lip_count = -1;
		hs->nos_count = (phba->link_events >> 1);
		hs->nos_count -= lso->link_events;
5399
	} else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
已提交
5400
		hs->lip_count = (phba->fc_eventTag >> 1);
5401
		hs->lip_count -= lso->link_events;
已提交
5402 5403 5404 5405
		hs->nos_count = -1;
	} else {
		hs->lip_count = -1;
		hs->nos_count = (phba->fc_eventTag >> 1);
5406
		hs->nos_count -= lso->link_events;
已提交
5407 5408 5409 5410
	}

	hs->dumped_frames = -1;

5411 5412 5413 5414 5415 5416
	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
5417

5418 5419
	mempool_free(pmboxq, phba->mbox_mem_pool);

已提交
5420 5421 5422
	return hs;
}

5423
/**
5424
 * lpfc_reset_stats - Copy the adapter link stats information
5425 5426
 * @shost: kernel scsi host pointer.
 **/
5427 5428 5429
static void
lpfc_reset_stats(struct Scsi_Host *shost)
{
J
James Smart 已提交
5430 5431 5432 5433
	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;
5434 5435 5436 5437
	LPFC_MBOXQ_t *pmboxq;
	MAILBOX_t *pmb;
	int rc = 0;

J
James Smart 已提交
5438
	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
5439 5440
		return;

5441 5442 5443 5444 5445
	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmboxq)
		return;
	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));

5446
	pmb = &pmboxq->u.mb;
5447 5448 5449 5450
	pmb->mbxCommand = MBX_READ_STATUS;
	pmb->mbxOwner = OWN_HOST;
	pmb->un.varWords[0] = 0x1; /* reset request */
	pmboxq->context1 = NULL;
5451
	pmboxq->vport = vport;
5452

J
James Smart 已提交
5453
	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
5454
		(!(psli->sli_flag & LPFC_SLI_ACTIVE)))
5455 5456 5457 5458 5459
		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
5460
		if (rc != MBX_TIMEOUT)
5461 5462 5463 5464 5465 5466 5467 5468
			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;
5469
	pmboxq->vport = vport;
5470

J
James Smart 已提交
5471
	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
5472
	    (!(psli->sli_flag & LPFC_SLI_ACTIVE)))
5473 5474 5475 5476 5477
		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
5478
		if (rc != MBX_TIMEOUT)
5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489
			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;
5490
	if (phba->hba_flag & HBA_FCOE_MODE)
5491 5492 5493
		lso->link_events = (phba->link_events >> 1);
	else
		lso->link_events = (phba->fc_eventTag >> 1);
5494 5495 5496

	psli->stats_start = get_seconds();

5497 5498
	mempool_free(pmboxq, phba->mbox_mem_pool);

5499 5500
	return;
}
已提交
5501 5502 5503 5504 5505

/*
 * The LPFC driver treats linkdown handling as target loss events so there
 * are no sysfs handlers for link_down_tmo.
 */
5506

5507
/**
5508
 * lpfc_get_node_by_target - Return the nodelist for a target
5509 5510 5511 5512 5513 5514
 * @starget: kernel scsi target pointer.
 *
 * Returns:
 * address of the node list if found
 * NULL target not found
 **/
5515 5516
static struct lpfc_nodelist *
lpfc_get_node_by_target(struct scsi_target *starget)
已提交
5517
{
J
James Smart 已提交
5518 5519
	struct Scsi_Host  *shost = dev_to_shost(starget->dev.parent);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5520
	struct lpfc_nodelist *ndlp;
已提交
5521 5522

	spin_lock_irq(shost->host_lock);
5523
	/* Search for this, mapped, target ID */
J
James Smart 已提交
5524
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5525 5526
		if (NLP_CHK_NODE_ACT(ndlp) &&
		    ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
5527 5528 5529
		    starget->id == ndlp->nlp_sid) {
			spin_unlock_irq(shost->host_lock);
			return ndlp;
已提交
5530 5531 5532
		}
	}
	spin_unlock_irq(shost->host_lock);
5533 5534
	return NULL;
}
已提交
5535

5536
/**
5537
 * lpfc_get_starget_port_id - Set the target port id to the ndlp DID or -1
5538 5539
 * @starget: kernel scsi target pointer.
 **/
5540 5541 5542 5543 5544 5545
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
5546 5547
}

5548
/**
5549
 * lpfc_get_starget_node_name - Set the target node name
5550 5551 5552 5553
 * @starget: kernel scsi target pointer.
 *
 * Description: Set the target node name to the ndlp node name wwn or zero.
 **/
已提交
5554 5555 5556
static void
lpfc_get_starget_node_name(struct scsi_target *starget)
{
5557
	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
已提交
5558

5559 5560
	fc_starget_node_name(starget) =
		ndlp ? wwn_to_u64(ndlp->nlp_nodename.u.wwn) : 0;
已提交
5561 5562
}

5563
/**
5564
 * lpfc_get_starget_port_name - Set the target port name
5565 5566 5567 5568
 * @starget: kernel scsi target pointer.
 *
 * Description:  set the target port name to the ndlp port name wwn or zero.
 **/
已提交
5569 5570 5571
static void
lpfc_get_starget_port_name(struct scsi_target *starget)
{
5572
	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
已提交
5573

5574 5575
	fc_starget_port_name(starget) =
		ndlp ? wwn_to_u64(ndlp->nlp_portname.u.wwn) : 0;
已提交
5576 5577
}

5578
/**
5579
 * lpfc_set_rport_loss_tmo - Set the rport dev loss tmo
5580 5581 5582 5583 5584 5585 5586
 * @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
5587 5588 5589 5590
static void
lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
{
	if (timeout)
5591
		rport->dev_loss_tmo = timeout;
已提交
5592
	else
5593
		rport->dev_loss_tmo = 1;
已提交
5594 5595
}

5596
/**
5597
 * lpfc_rport_show_function - Return rport target information
5598 5599 5600 5601 5602 5603 5604 5605 5606 5607
 *
 * 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
5608 5609
#define lpfc_rport_show_function(field, format_string, sz, cast)	\
static ssize_t								\
5610 5611 5612
lpfc_show_rport_##field (struct device *dev,				\
			 struct device_attribute *attr,			\
			 char *buf)					\
已提交
5613
{									\
5614
	struct fc_rport *rport = transport_class_to_rport(dev);		\
已提交
5615 5616 5617 5618 5619 5620 5621 5622 5623
	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)

5624
/**
5625
 * lpfc_set_vport_symbolic_name - Set the vport's symbolic name
5626 5627 5628 5629 5630
 * @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
5631
 * switch to propagate the change into the fabric if the vport is active.
5632 5633 5634 5635 5636 5637 5638 5639 5640
 **/
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
5641

5642 5643 5644 5645 5646 5647
/**
 * 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
5648
 * log message according to the module's lpfc_log_verbose parameter setting
5649 5650 5651 5652 5653 5654 5655 5656
 * 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
5657 5658 5659 5660 5661 5662 5663 5664
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,
5665
	.show_host_symbolic_name = 1,
已提交
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

	/* 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,
5692
	.reset_fc_host_stats = lpfc_reset_stats,
已提交
5693 5694 5695 5696 5697 5698 5699 5700 5701 5702 5703 5704 5705 5706 5707 5708

	.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,
5709 5710

	.issue_fc_host_lip = lpfc_issue_lip,
5711 5712
	.dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
	.terminate_rport_io = lpfc_terminate_rport_io,
5713 5714

	.dd_fcvport_size = sizeof(struct lpfc_vport *),
5715 5716 5717 5718

	.vport_disable = lpfc_vport_disable,

	.set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
5719 5720 5721

	.bsg_request = lpfc_bsg_request,
	.bsg_timeout = lpfc_bsg_timeout,
5722 5723
};

5724 5725 5726 5727 5728 5729 5730 5731
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,
5732
	.show_host_symbolic_name = 1,
5733 5734 5735 5736 5737 5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777 5778 5779 5780

	/* 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,
5781 5782

	.set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
5783 5784
};

5785
/**
5786
 * lpfc_get_cfgparam - Used during probe_one to init the adapter structure
5787 5788
 * @phba: lpfc_hba pointer.
 **/
已提交
5789 5790 5791
void
lpfc_get_cfgparam(struct lpfc_hba *phba)
{
5792
	lpfc_fcp_io_sched_init(phba, lpfc_fcp_io_sched);
5793
	lpfc_fcp2_no_tgt_reset_init(phba, lpfc_fcp2_no_tgt_reset);
5794 5795
	lpfc_cr_delay_init(phba, lpfc_cr_delay);
	lpfc_cr_count_init(phba, lpfc_cr_count);
5796
	lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support);
5797 5798
	lpfc_multi_ring_rctl_init(phba, lpfc_multi_ring_rctl);
	lpfc_multi_ring_type_init(phba, lpfc_multi_ring_type);
5799 5800 5801
	lpfc_ack0_init(phba, lpfc_ack0);
	lpfc_topology_init(phba, lpfc_topology);
	lpfc_link_speed_init(phba, lpfc_link_speed);
5802
	lpfc_poll_tmo_init(phba, lpfc_poll_tmo);
5803
	lpfc_task_mgmt_tmo_init(phba, lpfc_task_mgmt_tmo);
5804
	lpfc_enable_npiv_init(phba, lpfc_enable_npiv);
5805
	lpfc_fcf_failover_policy_init(phba, lpfc_fcf_failover_policy);
5806
	lpfc_enable_rrq_init(phba, lpfc_enable_rrq);
5807
	lpfc_use_msi_init(phba, lpfc_use_msi);
5808
	lpfc_fcp_imax_init(phba, lpfc_fcp_imax);
5809
	lpfc_fcp_cpu_map_init(phba, lpfc_fcp_cpu_map);
5810
	lpfc_fcp_io_channel_init(phba, lpfc_fcp_io_channel);
5811 5812
	lpfc_enable_hba_reset_init(phba, lpfc_enable_hba_reset);
	lpfc_enable_hba_heartbeat_init(phba, lpfc_enable_hba_heartbeat);
5813 5814 5815 5816 5817 5818 5819 5820 5821
	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;
5822
	lpfc_enable_bg_init(phba, lpfc_enable_bg);
5823 5824 5825
	if (phba->sli_rev == LPFC_SLI_REV4)
		phba->cfg_poll = 0;
	else
5826
		phba->cfg_poll = lpfc_poll;
5827
	phba->cfg_soft_wwnn = 0L;
5828
	phba->cfg_soft_wwpn = 0L;
5829
	lpfc_sg_seg_cnt_init(phba, lpfc_sg_seg_cnt);
5830
	lpfc_prot_sg_seg_cnt_init(phba, lpfc_prot_sg_seg_cnt);
5831
	lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth);
5832
	lpfc_hba_log_verbose_init(phba, lpfc_log_verbose);
J
James Smart 已提交
5833
	lpfc_aer_support_init(phba, lpfc_aer_support);
5834
	lpfc_sriov_nr_virtfn_init(phba, lpfc_sriov_nr_virtfn);
5835
	lpfc_request_firmware_upgrade_init(phba, lpfc_req_fw_upgrade);
5836
	lpfc_suppress_link_up_init(phba, lpfc_suppress_link_up);
5837
	lpfc_iocb_cnt_init(phba, lpfc_iocb_cnt);
5838
	phba->cfg_enable_dss = 1;
5839 5840
	return;
}
5841

5842
/**
5843
 * lpfc_get_vport_cfgparam - Used during port create, init the vport structure
5844 5845
 * @vport: lpfc_vport pointer.
 **/
5846 5847 5848
void
lpfc_get_vport_cfgparam(struct lpfc_vport *vport)
{
5849
	lpfc_log_verbose_init(vport, lpfc_log_verbose);
5850
	lpfc_lun_queue_depth_init(vport, lpfc_lun_queue_depth);
5851
	lpfc_tgt_queue_depth_init(vport, lpfc_tgt_queue_depth);
5852 5853 5854 5855 5856 5857
	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);
5858
	lpfc_first_burst_size_init(vport, lpfc_first_burst_size);
5859
	lpfc_max_scsicmpl_time_init(vport, lpfc_max_scsicmpl_time);
5860 5861 5862 5863
	lpfc_fdmi_on_init(vport, lpfc_fdmi_on);
	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
5864
	lpfc_enable_da_id_init(vport, lpfc_enable_da_id);
已提交
5865 5866
	return;
}