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gfiber / kernel / skids / 16200dcaebf939c24887fb2026eee942343d229b / . / drivers / scsi / lpfc / lpfc_attr.c
blob: bf33b315f93e4e556f2deaa810a21f06f49ddf1a [file] [log] [blame]
/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2004-2009 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
* www.emulex.com *
* Portions Copyright (C) 2004-2005 Christoph Hellwig *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of version 2 of the GNU General *
* Public License as published by the Free Software Foundation. *
* This program is distributed in the hope that it will be useful. *
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
* TO BE LEGALLY INVALID. See the GNU General Public License for *
* more details, a copy of which can be found in the file COPYING *
* included with this package. *
*******************************************************************/
#include <linux/ctype.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/aer.h>
#include <linux/gfp.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/fc/fc_fs.h>
#include "lpfc_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_sli4.h"
#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_version.h"
#include "lpfc_compat.h"
#include "lpfc_crtn.h"
#include "lpfc_vport.h"
#define LPFC_DEF_DEVLOSS_TMO 30
#define LPFC_MIN_DEVLOSS_TMO 1
#define LPFC_MAX_DEVLOSS_TMO 255
#define LPFC_MAX_LINK_SPEED 8
#define LPFC_LINK_SPEED_BITMAP 0x00000117
#define LPFC_LINK_SPEED_STRING "0, 1, 2, 4, 8"
/**
* lpfc_jedec_to_ascii - Hex to ascii convertor according to JEDEC rules
* @incr: integer to convert.
* @hdw: ascii string holding converted integer plus a string terminator.
*
* Description:
* JEDEC Joint Electron Device Engineering Council.
* Convert a 32 bit integer composed of 8 nibbles into an 8 byte ascii
* character string. The string is then terminated with a NULL in byte 9.
* Hex 0-9 becomes ascii '0' to '9'.
* Hex a-f becomes ascii '=' to 'B' capital B.
*
* Notes:
* Coded for 32 bit integers only.
**/
static void
lpfc_jedec_to_ascii(int incr, char hdw[])
{
int i, j;
for (i = 0; i < 8; i++) {
j = (incr & 0xf);
if (j <= 9)
hdw[7 - i] = 0x30 + j;
else
hdw[7 - i] = 0x61 + j - 10;
incr = (incr >> 4);
}
hdw[8] = 0;
return;
}
/**
* lpfc_drvr_version_show - Return the Emulex driver string with version number
* @dev: class unused variable.
* @attr: device attribute, not used.
* @buf: on return contains the module description text.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_drvr_version_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
return snprintf(buf, PAGE_SIZE, LPFC_MODULE_DESC "\n");
}
/**
* lpfc_enable_fip_show - Return the fip mode of the HBA
* @dev: class unused variable.
* @attr: device attribute, not used.
* @buf: on return contains the module description text.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_enable_fip_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
if (phba->hba_flag & HBA_FIP_SUPPORT)
return snprintf(buf, PAGE_SIZE, "1\n");
else
return snprintf(buf, PAGE_SIZE, "0\n");
}
static ssize_t
lpfc_bg_info_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
if (phba->cfg_enable_bg)
if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
return snprintf(buf, PAGE_SIZE, "BlockGuard Enabled\n");
else
return snprintf(buf, PAGE_SIZE,
"BlockGuard Not Supported\n");
else
return snprintf(buf, PAGE_SIZE,
"BlockGuard Disabled\n");
}
static ssize_t
lpfc_bg_guard_err_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "%llu\n",
(unsigned long long)phba->bg_guard_err_cnt);
}
static ssize_t
lpfc_bg_apptag_err_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "%llu\n",
(unsigned long long)phba->bg_apptag_err_cnt);
}
static ssize_t
lpfc_bg_reftag_err_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "%llu\n",
(unsigned long long)phba->bg_reftag_err_cnt);
}
/**
* lpfc_info_show - Return some pci info about the host in ascii
* @dev: class converted to a Scsi_host structure.
* @attr: device attribute, not used.
* @buf: on return contains the formatted text from lpfc_info().
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_info_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *host = class_to_shost(dev);
return snprintf(buf, PAGE_SIZE, "%s\n",lpfc_info(host));
}
/**
* lpfc_serialnum_show - Return the hba serial number in ascii
* @dev: class converted to a Scsi_host structure.
* @attr: device attribute, not used.
* @buf: on return contains the formatted text serial number.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_serialnum_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "%s\n",phba->SerialNumber);
}
/**
* lpfc_temp_sensor_show - Return the temperature sensor level
* @dev: class converted to a Scsi_host structure.
* @attr: device attribute, not used.
* @buf: on return contains the formatted support level.
*
* Description:
* Returns a number indicating the temperature sensor level currently
* supported, zero or one in ascii.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_temp_sensor_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "%d\n",phba->temp_sensor_support);
}
/**
* lpfc_modeldesc_show - Return the model description of the hba
* @dev: class converted to a Scsi_host structure.
* @attr: device attribute, not used.
* @buf: on return contains the scsi vpd model description.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_modeldesc_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelDesc);
}
/**
* lpfc_modelname_show - Return the model name of the hba
* @dev: class converted to a Scsi_host structure.
* @attr: device attribute, not used.
* @buf: on return contains the scsi vpd model name.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_modelname_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelName);
}
/**
* lpfc_programtype_show - Return the program type of the hba
* @dev: class converted to a Scsi_host structure.
* @attr: device attribute, not used.
* @buf: on return contains the scsi vpd program type.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_programtype_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "%s\n",phba->ProgramType);
}
/**
* lpfc_mlomgmt_show - Return the Menlo Maintenance sli flag
* @dev: class converted to a Scsi_host structure.
* @attr: device attribute, not used.
* @buf: on return contains the Menlo Maintenance sli flag.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_mlomgmt_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "%d\n",
(phba->sli.sli_flag & LPFC_MENLO_MAINT));
}
/**
* lpfc_vportnum_show - Return the port number in ascii of the hba
* @dev: class converted to a Scsi_host structure.
* @attr: device attribute, not used.
* @buf: on return contains scsi vpd program type.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_vportnum_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "%s\n",phba->Port);
}
/**
* lpfc_fwrev_show - Return the firmware rev running in the hba
* @dev: class converted to a Scsi_host structure.
* @attr: device attribute, not used.
* @buf: on return contains the scsi vpd program type.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_fwrev_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
char fwrev[32];
lpfc_decode_firmware_rev(phba, fwrev, 1);
return snprintf(buf, PAGE_SIZE, "%s, sli-%d\n", fwrev, phba->sli_rev);
}
/**
* lpfc_hdw_show - Return the jedec information about the hba
* @dev: class converted to a Scsi_host structure.
* @attr: device attribute, not used.
* @buf: on return contains the scsi vpd program type.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_hdw_show(struct device *dev, struct device_attribute *attr, char *buf)
{
char hdw[9];
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
lpfc_vpd_t *vp = &phba->vpd;
lpfc_jedec_to_ascii(vp->rev.biuRev, hdw);
return snprintf(buf, PAGE_SIZE, "%s\n", hdw);
}
/**
* lpfc_option_rom_version_show - Return the adapter ROM FCode version
* @dev: class converted to a Scsi_host structure.
* @attr: device attribute, not used.
* @buf: on return contains the ROM and FCode ascii strings.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_option_rom_version_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "%s\n", phba->OptionROMVersion);
}
/**
* lpfc_state_show - Return the link state of the port
* @dev: class converted to a Scsi_host structure.
* @attr: device attribute, not used.
* @buf: on return contains text describing the state of the link.
*
* Notes:
* The switch statement has no default so zero will be returned.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_link_state_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
int len = 0;
switch (phba->link_state) {
case LPFC_LINK_UNKNOWN:
case LPFC_WARM_START:
case LPFC_INIT_START:
case LPFC_INIT_MBX_CMDS:
case LPFC_LINK_DOWN:
case LPFC_HBA_ERROR:
if (phba->hba_flag & LINK_DISABLED)
len += snprintf(buf + len, PAGE_SIZE-len,
"Link Down - User disabled\n");
else
len += snprintf(buf + len, PAGE_SIZE-len,
"Link Down\n");
break;
case LPFC_LINK_UP:
case LPFC_CLEAR_LA:
case LPFC_HBA_READY:
len += snprintf(buf + len, PAGE_SIZE-len, "Link Up - ");
switch (vport->port_state) {
case LPFC_LOCAL_CFG_LINK:
len += snprintf(buf + len, PAGE_SIZE-len,
"Configuring Link\n");
break;
case LPFC_FDISC:
case LPFC_FLOGI:
case LPFC_FABRIC_CFG_LINK:
case LPFC_NS_REG:
case LPFC_NS_QRY:
case LPFC_BUILD_DISC_LIST:
case LPFC_DISC_AUTH:
len += snprintf(buf + len, PAGE_SIZE - len,
"Discovery\n");
break;
case LPFC_VPORT_READY:
len += snprintf(buf + len, PAGE_SIZE - len, "Ready\n");
break;
case LPFC_VPORT_FAILED:
len += snprintf(buf + len, PAGE_SIZE - len, "Failed\n");
break;
case LPFC_VPORT_UNKNOWN:
len += snprintf(buf + len, PAGE_SIZE - len,
"Unknown\n");
break;
}
if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
len += snprintf(buf + len, PAGE_SIZE-len,
" Menlo Maint Mode\n");
else if (phba->fc_topology == TOPOLOGY_LOOP) {
if (vport->fc_flag & FC_PUBLIC_LOOP)
len += snprintf(buf + len, PAGE_SIZE-len,
" Public Loop\n");
else
len += snprintf(buf + len, PAGE_SIZE-len,
" Private Loop\n");
} else {
if (vport->fc_flag & FC_FABRIC)
len += snprintf(buf + len, PAGE_SIZE-len,
" Fabric\n");
else
len += snprintf(buf + len, PAGE_SIZE-len,
" Point-2-Point\n");
}
}
return len;
}
/**
* lpfc_link_state_store - Transition the link_state on an HBA port
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: one or more lpfc_polling_flags values.
* @count: not used.
*
* Returns:
* -EINVAL if the buffer is not "up" or "down"
* return from link state change function if non-zero
* length of the buf on success
**/
static ssize_t
lpfc_link_state_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
int status = -EINVAL;
if ((strncmp(buf, "up", sizeof("up") - 1) == 0) &&
(phba->link_state == LPFC_LINK_DOWN))
status = phba->lpfc_hba_init_link(phba);
else if ((strncmp(buf, "down", sizeof("down") - 1) == 0) &&
(phba->link_state >= LPFC_LINK_UP))
status = phba->lpfc_hba_down_link(phba);
if (status == 0)
return strlen(buf);
else
return status;
}
/**
* lpfc_num_discovered_ports_show - Return sum of mapped and unmapped vports
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the sum of fc mapped and unmapped.
*
* Description:
* Returns the ascii text number of the sum of the fc mapped and unmapped
* vport counts.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_num_discovered_ports_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
return snprintf(buf, PAGE_SIZE, "%d\n",
vport->fc_map_cnt + vport->fc_unmap_cnt);
}
/**
* lpfc_issue_lip - Misnomer, name carried over from long ago
* @shost: Scsi_Host pointer.
*
* Description:
* Bring the link down gracefully then re-init the link. The firmware will
* re-init the fiber channel interface as required. Does not issue a LIP.
*
* Returns:
* -EPERM port offline or management commands are being blocked
* -ENOMEM cannot allocate memory for the mailbox command
* -EIO error sending the mailbox command
* zero for success
**/
static int
lpfc_issue_lip(struct Scsi_Host *shost)
{
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *pmboxq;
int mbxstatus = MBXERR_ERROR;
if ((vport->fc_flag & FC_OFFLINE_MODE) ||
(phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO))
return -EPERM;
pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
if (!pmboxq)
return -ENOMEM;
memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
pmboxq->u.mb.mbxOwner = OWN_HOST;
mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);
if ((mbxstatus == MBX_SUCCESS) &&
(pmboxq->u.mb.mbxStatus == 0 ||
pmboxq->u.mb.mbxStatus == MBXERR_LINK_DOWN)) {
memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
lpfc_init_link(phba, pmboxq, phba->cfg_topology,
phba->cfg_link_speed);
mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
phba->fc_ratov * 2);
}
lpfc_set_loopback_flag(phba);
if (mbxstatus != MBX_TIMEOUT)
mempool_free(pmboxq, phba->mbox_mem_pool);
if (mbxstatus == MBXERR_ERROR)
return -EIO;
return 0;
}
/**
* lpfc_do_offline - Issues a mailbox command to bring the link down
* @phba: lpfc_hba pointer.
* @type: LPFC_EVT_OFFLINE, LPFC_EVT_WARM_START, LPFC_EVT_KILL.
*
* Notes:
* Assumes any error from lpfc_do_offline() will be negative.
* Can wait up to 5 seconds for the port ring buffers count
* to reach zero, prints a warning if it is not zero and continues.
* lpfc_workq_post_event() returns a non-zero return code if call fails.
*
* Returns:
* -EIO error posting the event
* zero for success
**/
static int
lpfc_do_offline(struct lpfc_hba *phba, uint32_t type)
{
struct completion online_compl;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
int status = 0;
int cnt = 0;
int i;
init_completion(&online_compl);
lpfc_workq_post_event(phba, &status, &online_compl,
LPFC_EVT_OFFLINE_PREP);
wait_for_completion(&online_compl);
if (status != 0)
return -EIO;
psli = &phba->sli;
/* Wait a little for things to settle down, but not
* long enough for dev loss timeout to expire.
*/
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
while (pring->txcmplq_cnt) {
msleep(10);
if (cnt++ > 500) { /* 5 secs */
lpfc_printf_log(phba,
KERN_WARNING, LOG_INIT,
"0466 Outstanding IO when "
"bringing Adapter offline\n");
break;
}
}
}
init_completion(&online_compl);
lpfc_workq_post_event(phba, &status, &online_compl, type);
wait_for_completion(&online_compl);
if (status != 0)
return -EIO;
return 0;
}
/**
* lpfc_selective_reset - Offline then onlines the port
* @phba: lpfc_hba pointer.
*
* Description:
* If the port is configured to allow a reset then the hba is brought
* offline then online.
*
* Notes:
* Assumes any error from lpfc_do_offline() will be negative.
*
* Returns:
* lpfc_do_offline() return code if not zero
* -EIO reset not configured or error posting the event
* zero for success
**/
static int
lpfc_selective_reset(struct lpfc_hba *phba)
{
struct completion online_compl;
int status = 0;
if (!phba->cfg_enable_hba_reset)
return -EIO;
status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
if (status != 0)
return status;
init_completion(&online_compl);
lpfc_workq_post_event(phba, &status, &online_compl,
LPFC_EVT_ONLINE);
wait_for_completion(&online_compl);
if (status != 0)
return -EIO;
return 0;
}
/**
* lpfc_issue_reset - Selectively resets an adapter
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: containing the string "selective".
* @count: unused variable.
*
* Description:
* If the buf contains the string "selective" then lpfc_selective_reset()
* is called to perform the reset.
*
* Notes:
* Assumes any error from lpfc_selective_reset() will be negative.
* If lpfc_selective_reset() returns zero then the length of the buffer
* is returned which indicates success
*
* Returns:
* -EINVAL if the buffer does not contain the string "selective"
* length of buf if lpfc-selective_reset() if the call succeeds
* return value of lpfc_selective_reset() if the call fails
**/
static ssize_t
lpfc_issue_reset(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
int status = -EINVAL;
if (strncmp(buf, "selective", sizeof("selective") - 1) == 0)
status = lpfc_selective_reset(phba);
if (status == 0)
return strlen(buf);
else
return status;
}
/**
* lpfc_nport_evt_cnt_show - Return the number of nport events
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the ascii number of nport events.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_nport_evt_cnt_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt);
}
/**
* lpfc_board_mode_show - Return the state of the board
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the state of the adapter.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_board_mode_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
char * state;
if (phba->link_state == LPFC_HBA_ERROR)
state = "error";
else if (phba->link_state == LPFC_WARM_START)
state = "warm start";
else if (phba->link_state == LPFC_INIT_START)
state = "offline";
else
state = "online";
return snprintf(buf, PAGE_SIZE, "%s\n", state);
}
/**
* lpfc_board_mode_store - Puts the hba in online, offline, warm or error state
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: containing one of the strings "online", "offline", "warm" or "error".
* @count: unused variable.
*
* Returns:
* -EACCES if enable hba reset not enabled
* -EINVAL if the buffer does not contain a valid string (see above)
* -EIO if lpfc_workq_post_event() or lpfc_do_offline() fails
* buf length greater than zero indicates success
**/
static ssize_t
lpfc_board_mode_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
struct completion online_compl;
int status=0;
if (!phba->cfg_enable_hba_reset)
return -EACCES;
init_completion(&online_compl);
if(strncmp(buf, "online", sizeof("online") - 1) == 0) {
lpfc_workq_post_event(phba, &status, &online_compl,
LPFC_EVT_ONLINE);
wait_for_completion(&online_compl);
} else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0)
if (phba->sli_rev == LPFC_SLI_REV4)
return -EINVAL;
else
status = lpfc_do_offline(phba, LPFC_EVT_WARM_START);
else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
if (phba->sli_rev == LPFC_SLI_REV4)
return -EINVAL;
else
status = lpfc_do_offline(phba, LPFC_EVT_KILL);
else
return -EINVAL;
if (!status)
return strlen(buf);
else
return -EIO;
}
/**
* lpfc_get_hba_info - Return various bits of informaton about the adapter
* @phba: pointer to the adapter structure.
* @mxri: max xri count.
* @axri: available xri count.
* @mrpi: max rpi count.
* @arpi: available rpi count.
* @mvpi: max vpi count.
* @avpi: available vpi count.
*
* Description:
* If an integer pointer for an count is not null then the value for the
* count is returned.
*
* Returns:
* zero on error
* one for success
**/
static int
lpfc_get_hba_info(struct lpfc_hba *phba,
uint32_t *mxri, uint32_t *axri,
uint32_t *mrpi, uint32_t *arpi,
uint32_t *mvpi, uint32_t *avpi)
{
struct lpfc_sli *psli = &phba->sli;
struct lpfc_mbx_read_config *rd_config;
LPFC_MBOXQ_t *pmboxq;
MAILBOX_t *pmb;
int rc = 0;
uint32_t max_vpi;
/*
* prevent udev from issuing mailbox commands until the port is
* configured.
*/
if (phba->link_state < LPFC_LINK_DOWN ||
!phba->mbox_mem_pool ||
(phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
return 0;
if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
return 0;
pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmboxq)
return 0;
memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
pmb = &pmboxq->u.mb;
pmb->mbxCommand = MBX_READ_CONFIG;
pmb->mbxOwner = OWN_HOST;
pmboxq->context1 = NULL;
if ((phba->pport->fc_flag & FC_OFFLINE_MODE) ||
(!(psli->sli_flag & LPFC_SLI_ACTIVE)))
rc = MBX_NOT_FINISHED;
else
rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
if (rc != MBX_SUCCESS) {
if (rc != MBX_TIMEOUT)
mempool_free(pmboxq, phba->mbox_mem_pool);
return 0;
}
if (phba->sli_rev == LPFC_SLI_REV4) {
rd_config = &pmboxq->u.mqe.un.rd_config;
if (mrpi)
*mrpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
if (arpi)
*arpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config) -
phba->sli4_hba.max_cfg_param.rpi_used;
if (mxri)
*mxri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
if (axri)
*axri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config) -
phba->sli4_hba.max_cfg_param.xri_used;
/* Account for differences with SLI-3. Get vpi count from
* mailbox data and subtract one for max vpi value.
*/
max_vpi = (bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) > 0) ?
(bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) - 1) : 0;
if (mvpi)
*mvpi = max_vpi;
if (avpi)
*avpi = max_vpi - phba->sli4_hba.max_cfg_param.vpi_used;
} else {
if (mrpi)
*mrpi = pmb->un.varRdConfig.max_rpi;
if (arpi)
*arpi = pmb->un.varRdConfig.avail_rpi;
if (mxri)
*mxri = pmb->un.varRdConfig.max_xri;
if (axri)
*axri = pmb->un.varRdConfig.avail_xri;
if (mvpi)
*mvpi = pmb->un.varRdConfig.max_vpi;
if (avpi)
*avpi = pmb->un.varRdConfig.avail_vpi;
}
mempool_free(pmboxq, phba->mbox_mem_pool);
return 1;
}
/**
* lpfc_max_rpi_show - Return maximum rpi
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the maximum rpi count in decimal or "Unknown".
*
* Description:
* Calls lpfc_get_hba_info() asking for just the mrpi count.
* If lpfc_get_hba_info() returns zero (failure) the buffer text is set
* to "Unknown" and the buffer length is returned, therefore the caller
* must check for "Unknown" in the buffer to detect a failure.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_max_rpi_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
uint32_t cnt;
if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, NULL, NULL, NULL))
return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
return snprintf(buf, PAGE_SIZE, "Unknown\n");
}
/**
* lpfc_used_rpi_show - Return maximum rpi minus available rpi
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: containing the used rpi count in decimal or "Unknown".
*
* Description:
* Calls lpfc_get_hba_info() asking for just the mrpi and arpi counts.
* If lpfc_get_hba_info() returns zero (failure) the buffer text is set
* to "Unknown" and the buffer length is returned, therefore the caller
* must check for "Unknown" in the buffer to detect a failure.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_used_rpi_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
uint32_t cnt, acnt;
if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, &acnt, NULL, NULL))
return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
return snprintf(buf, PAGE_SIZE, "Unknown\n");
}
/**
* lpfc_max_xri_show - Return maximum xri
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the maximum xri count in decimal or "Unknown".
*
* Description:
* Calls lpfc_get_hba_info() asking for just the mrpi count.
* If lpfc_get_hba_info() returns zero (failure) the buffer text is set
* to "Unknown" and the buffer length is returned, therefore the caller
* must check for "Unknown" in the buffer to detect a failure.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_max_xri_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
uint32_t cnt;
if (lpfc_get_hba_info(phba, &cnt, NULL, NULL, NULL, NULL, NULL))
return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
return snprintf(buf, PAGE_SIZE, "Unknown\n");
}
/**
* lpfc_used_xri_show - Return maximum xpi minus the available xpi
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the used xri count in decimal or "Unknown".
*
* Description:
* Calls lpfc_get_hba_info() asking for just the mxri and axri counts.
* If lpfc_get_hba_info() returns zero (failure) the buffer text is set
* to "Unknown" and the buffer length is returned, therefore the caller
* must check for "Unknown" in the buffer to detect a failure.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_used_xri_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
uint32_t cnt, acnt;
if (lpfc_get_hba_info(phba, &cnt, &acnt, NULL, NULL, NULL, NULL))
return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
return snprintf(buf, PAGE_SIZE, "Unknown\n");
}
/**
* lpfc_max_vpi_show - Return maximum vpi
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the maximum vpi count in decimal or "Unknown".
*
* Description:
* Calls lpfc_get_hba_info() asking for just the mvpi count.
* If lpfc_get_hba_info() returns zero (failure) the buffer text is set
* to "Unknown" and the buffer length is returned, therefore the caller
* must check for "Unknown" in the buffer to detect a failure.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_max_vpi_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
uint32_t cnt;
if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, NULL))
return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
return snprintf(buf, PAGE_SIZE, "Unknown\n");
}
/**
* lpfc_used_vpi_show - Return maximum vpi minus the available vpi
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the used vpi count in decimal or "Unknown".
*
* Description:
* Calls lpfc_get_hba_info() asking for just the mvpi and avpi counts.
* If lpfc_get_hba_info() returns zero (failure) the buffer text is set
* to "Unknown" and the buffer length is returned, therefore the caller
* must check for "Unknown" in the buffer to detect a failure.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_used_vpi_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
uint32_t cnt, acnt;
if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, &acnt))
return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
return snprintf(buf, PAGE_SIZE, "Unknown\n");
}
/**
* lpfc_npiv_info_show - Return text about NPIV support for the adapter
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: text that must be interpreted to determine if npiv is supported.
*
* Description:
* Buffer will contain text indicating npiv is not suppoerted on the port,
* the port is an NPIV physical port, or it is an npiv virtual port with
* the id of the vport.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_npiv_info_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
if (!(phba->max_vpi))
return snprintf(buf, PAGE_SIZE, "NPIV Not Supported\n");
if (vport->port_type == LPFC_PHYSICAL_PORT)
return snprintf(buf, PAGE_SIZE, "NPIV Physical\n");
return snprintf(buf, PAGE_SIZE, "NPIV Virtual (VPI %d)\n", vport->vpi);
}
/**
* lpfc_poll_show - Return text about poll support for the adapter
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the cfg_poll in hex.
*
* Notes:
* cfg_poll should be a lpfc_polling_flags type.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_poll_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "%#x\n", phba->cfg_poll);
}
/**
* lpfc_poll_store - Set the value of cfg_poll for the adapter
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: one or more lpfc_polling_flags values.
* @count: not used.
*
* Notes:
* buf contents converted to integer and checked for a valid value.
*
* Returns:
* -EINVAL if the buffer connot be converted or is out of range
* length of the buf on success
**/
static ssize_t
lpfc_poll_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
uint32_t creg_val;
uint32_t old_val;
int val=0;
if (!isdigit(buf[0]))
return -EINVAL;
if (sscanf(buf, "%i", &val) != 1)
return -EINVAL;
if ((val & 0x3) != val)
return -EINVAL;
if (phba->sli_rev == LPFC_SLI_REV4)
val = 0;
spin_lock_irq(&phba->hbalock);
old_val = phba->cfg_poll;
if (val & ENABLE_FCP_RING_POLLING) {
if ((val & DISABLE_FCP_RING_INT) &&
!(old_val & DISABLE_FCP_RING_INT)) {
creg_val = readl(phba->HCregaddr);
creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
writel(creg_val, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
lpfc_poll_start_timer(phba);
}
} else if (val != 0x0) {
spin_unlock_irq(&phba->hbalock);
return -EINVAL;
}
if (!(val & DISABLE_FCP_RING_INT) &&
(old_val & DISABLE_FCP_RING_INT))
{
spin_unlock_irq(&phba->hbalock);
del_timer(&phba->fcp_poll_timer);
spin_lock_irq(&phba->hbalock);
creg_val = readl(phba->HCregaddr);
creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
writel(creg_val, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
}
phba->cfg_poll = val;
spin_unlock_irq(&phba->hbalock);
return strlen(buf);
}
/**
* lpfc_param_show - Return a cfg attribute value in decimal
*
* Description:
* Macro that given an attr e.g. hba_queue_depth expands
* into a function with the name lpfc_hba_queue_depth_show.
*
* lpfc_##attr##_show: Return the decimal value of an adapters cfg_xxx field.
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the attribute value in decimal.
*
* Returns: size of formatted string.
**/
#define lpfc_param_show(attr) \
static ssize_t \
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct Scsi_Host *shost = class_to_shost(dev);\
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
struct lpfc_hba *phba = vport->phba;\
uint val = 0;\
val = phba->cfg_##attr;\
return snprintf(buf, PAGE_SIZE, "%d\n",\
phba->cfg_##attr);\
}
/**
* lpfc_param_hex_show - Return a cfg attribute value in hex
*
* Description:
* Macro that given an attr e.g. hba_queue_depth expands
* into a function with the name lpfc_hba_queue_depth_show
*
* lpfc_##attr##_show: Return the hex value of an adapters cfg_xxx field.
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the attribute value in hexadecimal.
*
* Returns: size of formatted string.
**/
#define lpfc_param_hex_show(attr) \
static ssize_t \
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct Scsi_Host *shost = class_to_shost(dev);\
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
struct lpfc_hba *phba = vport->phba;\
uint val = 0;\
val = phba->cfg_##attr;\
return snprintf(buf, PAGE_SIZE, "%#x\n",\
phba->cfg_##attr);\
}
/**
* lpfc_param_init - Intializes a cfg attribute
*
* Description:
* Macro that given an attr e.g. hba_queue_depth expands
* into a function with the name lpfc_hba_queue_depth_init. The macro also
* takes a default argument, a minimum and maximum argument.
*
* lpfc_##attr##_init: Initializes an attribute.
* @phba: pointer the the adapter structure.
* @val: integer attribute value.
*
* Validates the min and max values then sets the adapter config field
* accordingly, or uses the default if out of range and prints an error message.
*
* Returns:
* zero on success
* -EINVAL if default used
**/
#define lpfc_param_init(attr, default, minval, maxval) \
static int \
lpfc_##attr##_init(struct lpfc_hba *phba, uint val) \
{ \
if (val >= minval && val <= maxval) {\
phba->cfg_##attr = val;\
return 0;\
}\
lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
"0449 lpfc_"#attr" attribute cannot be set to %d, "\
"allowed range is ["#minval", "#maxval"]\n", val); \
phba->cfg_##attr = default;\
return -EINVAL;\
}
/**
* lpfc_param_set - Set a cfg attribute value
*
* Description:
* Macro that given an attr e.g. hba_queue_depth expands
* into a function with the name lpfc_hba_queue_depth_set
*
* lpfc_##attr##_set: Sets an attribute value.
* @phba: pointer the the adapter structure.
* @val: integer attribute value.
*
* Description:
* Validates the min and max values then sets the
* adapter config field if in the valid range. prints error message
* and does not set the parameter if invalid.
*
* Returns:
* zero on success
* -EINVAL if val is invalid
**/
#define lpfc_param_set(attr, default, minval, maxval) \
static int \
lpfc_##attr##_set(struct lpfc_hba *phba, uint val) \
{ \
if (val >= minval && val <= maxval) {\
phba->cfg_##attr = val;\
return 0;\
}\
lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
"0450 lpfc_"#attr" attribute cannot be set to %d, "\
"allowed range is ["#minval", "#maxval"]\n", val); \
return -EINVAL;\
}
/**
* lpfc_param_store - Set a vport attribute value
*
* Description:
* Macro that given an attr e.g. hba_queue_depth expands
* into a function with the name lpfc_hba_queue_depth_store.
*
* lpfc_##attr##_store: Set an sttribute value.
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: contains the attribute value in ascii.
* @count: not used.
*
* Description:
* Convert the ascii text number to an integer, then
* use the lpfc_##attr##_set function to set the value.
*
* Returns:
* -EINVAL if val is invalid or lpfc_##attr##_set() fails
* length of buffer upon success.
**/
#define lpfc_param_store(attr) \
static ssize_t \
lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
struct Scsi_Host *shost = class_to_shost(dev);\
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
struct lpfc_hba *phba = vport->phba;\
uint val = 0;\
if (!isdigit(buf[0]))\
return -EINVAL;\
if (sscanf(buf, "%i", &val) != 1)\
return -EINVAL;\
if (lpfc_##attr##_set(phba, val) == 0) \
return strlen(buf);\
else \
return -EINVAL;\
}
/**
* lpfc_vport_param_show - Return decimal formatted cfg attribute value
*
* Description:
* Macro that given an attr e.g. hba_queue_depth expands
* into a function with the name lpfc_hba_queue_depth_show
*
* lpfc_##attr##_show: prints the attribute value in decimal.
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the attribute value in decimal.
*
* Returns: length of formatted string.
**/
#define lpfc_vport_param_show(attr) \
static ssize_t \
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct Scsi_Host *shost = class_to_shost(dev);\
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
uint val = 0;\
val = vport->cfg_##attr;\
return snprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_##attr);\
}
/**
* lpfc_vport_param_hex_show - Return hex formatted attribute value
*
* Description:
* Macro that given an attr e.g.
* hba_queue_depth expands into a function with the name
* lpfc_hba_queue_depth_show
*
* lpfc_##attr##_show: prints the attribute value in hexadecimal.
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the attribute value in hexadecimal.
*
* Returns: length of formatted string.
**/
#define lpfc_vport_param_hex_show(attr) \
static ssize_t \
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct Scsi_Host *shost = class_to_shost(dev);\
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
uint val = 0;\
val = vport->cfg_##attr;\
return snprintf(buf, PAGE_SIZE, "%#x\n", vport->cfg_##attr);\
}
/**
* lpfc_vport_param_init - Initialize a vport cfg attribute
*
* Description:
* Macro that given an attr e.g. hba_queue_depth expands
* into a function with the name lpfc_hba_queue_depth_init. The macro also
* takes a default argument, a minimum and maximum argument.
*
* lpfc_##attr##_init: validates the min and max values then sets the
* adapter config field accordingly, or uses the default if out of range
* and prints an error message.
* @phba: pointer the the adapter structure.
* @val: integer attribute value.
*
* Returns:
* zero on success
* -EINVAL if default used
**/
#define lpfc_vport_param_init(attr, default, minval, maxval) \
static int \
lpfc_##attr##_init(struct lpfc_vport *vport, uint val) \
{ \
if (val >= minval && val <= maxval) {\
vport->cfg_##attr = val;\
return 0;\
}\
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
"0423 lpfc_"#attr" attribute cannot be set to %d, "\
"allowed range is ["#minval", "#maxval"]\n", val); \
vport->cfg_##attr = default;\
return -EINVAL;\
}
/**
* lpfc_vport_param_set - Set a vport cfg attribute
*
* Description:
* Macro that given an attr e.g. hba_queue_depth expands
* into a function with the name lpfc_hba_queue_depth_set
*
* lpfc_##attr##_set: validates the min and max values then sets the
* adapter config field if in the valid range. prints error message
* and does not set the parameter if invalid.
* @phba: pointer the the adapter structure.
* @val: integer attribute value.
*
* Returns:
* zero on success
* -EINVAL if val is invalid
**/
#define lpfc_vport_param_set(attr, default, minval, maxval) \
static int \
lpfc_##attr##_set(struct lpfc_vport *vport, uint val) \
{ \
if (val >= minval && val <= maxval) {\
vport->cfg_##attr = val;\
return 0;\
}\
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
"0424 lpfc_"#attr" attribute cannot be set to %d, "\
"allowed range is ["#minval", "#maxval"]\n", val); \
return -EINVAL;\
}
/**
* lpfc_vport_param_store - Set a vport attribute
*
* Description:
* Macro that given an attr e.g. hba_queue_depth
* expands into a function with the name lpfc_hba_queue_depth_store
*
* lpfc_##attr##_store: convert the ascii text number to an integer, then
* use the lpfc_##attr##_set function to set the value.
* @cdev: class device that is converted into a Scsi_host.
* @buf: contains the attribute value in decimal.
* @count: not used.
*
* Returns:
* -EINVAL if val is invalid or lpfc_##attr##_set() fails
* length of buffer upon success.
**/
#define lpfc_vport_param_store(attr) \
static ssize_t \
lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
struct Scsi_Host *shost = class_to_shost(dev);\
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
uint val = 0;\
if (!isdigit(buf[0]))\
return -EINVAL;\
if (sscanf(buf, "%i", &val) != 1)\
return -EINVAL;\
if (lpfc_##attr##_set(vport, val) == 0) \
return strlen(buf);\
else \
return -EINVAL;\
}
#define LPFC_ATTR(name, defval, minval, maxval, desc) \
static uint lpfc_##name = defval;\
module_param(lpfc_##name, uint, 0);\
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_param_init(name, defval, minval, maxval)
#define LPFC_ATTR_R(name, defval, minval, maxval, desc) \
static uint lpfc_##name = defval;\
module_param(lpfc_##name, uint, 0);\
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_param_show(name)\
lpfc_param_init(name, defval, minval, maxval)\
static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
#define LPFC_ATTR_RW(name, defval, minval, maxval, desc) \
static uint lpfc_##name = defval;\
module_param(lpfc_##name, uint, 0);\
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_param_show(name)\
lpfc_param_init(name, defval, minval, maxval)\
lpfc_param_set(name, defval, minval, maxval)\
lpfc_param_store(name)\
static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
lpfc_##name##_show, lpfc_##name##_store)
#define LPFC_ATTR_HEX_R(name, defval, minval, maxval, desc) \
static uint lpfc_##name = defval;\
module_param(lpfc_##name, uint, 0);\
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_param_hex_show(name)\
lpfc_param_init(name, defval, minval, maxval)\
static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
#define LPFC_ATTR_HEX_RW(name, defval, minval, maxval, desc) \
static uint lpfc_##name = defval;\
module_param(lpfc_##name, uint, 0);\
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)\
static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
lpfc_##name##_show, lpfc_##name##_store)
#define LPFC_VPORT_ATTR(name, defval, minval, maxval, desc) \
static uint lpfc_##name = defval;\
module_param(lpfc_##name, uint, 0);\
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_vport_param_init(name, defval, minval, maxval)
#define LPFC_VPORT_ATTR_R(name, defval, minval, maxval, desc) \
static uint lpfc_##name = defval;\
module_param(lpfc_##name, uint, 0);\
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_vport_param_show(name)\
lpfc_vport_param_init(name, defval, minval, maxval)\
static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
#define LPFC_VPORT_ATTR_RW(name, defval, minval, maxval, desc) \
static uint lpfc_##name = defval;\
module_param(lpfc_##name, uint, 0);\
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)\
static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
lpfc_##name##_show, lpfc_##name##_store)
#define LPFC_VPORT_ATTR_HEX_R(name, defval, minval, maxval, desc) \
static uint lpfc_##name = defval;\
module_param(lpfc_##name, uint, 0);\
MODULE_PARM_DESC(lpfc_##name, desc);\
lpfc_vport_param_hex_show(name)\
lpfc_vport_param_init(name, defval, minval, maxval)\
static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
#define LPFC_VPORT_ATTR_HEX_RW(name, defval, minval, maxval, desc) \
static uint lpfc_##name = defval;\
module_param(lpfc_##name, uint, 0);\
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)\
static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
lpfc_##name##_show, lpfc_##name##_store)
static DEVICE_ATTR(bg_info, S_IRUGO, lpfc_bg_info_show, NULL);
static DEVICE_ATTR(bg_guard_err, S_IRUGO, lpfc_bg_guard_err_show, NULL);
static DEVICE_ATTR(bg_apptag_err, S_IRUGO, lpfc_bg_apptag_err_show, NULL);
static DEVICE_ATTR(bg_reftag_err, S_IRUGO, lpfc_bg_reftag_err_show, NULL);
static DEVICE_ATTR(info, S_IRUGO, lpfc_info_show, NULL);
static DEVICE_ATTR(serialnum, S_IRUGO, lpfc_serialnum_show, NULL);
static DEVICE_ATTR(modeldesc, S_IRUGO, lpfc_modeldesc_show, NULL);
static DEVICE_ATTR(modelname, S_IRUGO, lpfc_modelname_show, NULL);
static DEVICE_ATTR(programtype, S_IRUGO, lpfc_programtype_show, NULL);
static DEVICE_ATTR(portnum, S_IRUGO, lpfc_vportnum_show, NULL);
static DEVICE_ATTR(fwrev, S_IRUGO, lpfc_fwrev_show, NULL);
static DEVICE_ATTR(hdw, S_IRUGO, lpfc_hdw_show, NULL);
static DEVICE_ATTR(link_state, S_IRUGO | S_IWUSR, lpfc_link_state_show,
lpfc_link_state_store);
static DEVICE_ATTR(option_rom_version, S_IRUGO,
lpfc_option_rom_version_show, NULL);
static DEVICE_ATTR(num_discovered_ports, S_IRUGO,
lpfc_num_discovered_ports_show, NULL);
static DEVICE_ATTR(menlo_mgmt_mode, S_IRUGO, lpfc_mlomgmt_show, NULL);
static DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL);
static DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show, NULL);
static DEVICE_ATTR(lpfc_enable_fip, S_IRUGO, lpfc_enable_fip_show, NULL);
static DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR,
lpfc_board_mode_show, lpfc_board_mode_store);
static DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);
static DEVICE_ATTR(max_vpi, S_IRUGO, lpfc_max_vpi_show, NULL);
static DEVICE_ATTR(used_vpi, S_IRUGO, lpfc_used_vpi_show, NULL);
static DEVICE_ATTR(max_rpi, S_IRUGO, lpfc_max_rpi_show, NULL);
static DEVICE_ATTR(used_rpi, S_IRUGO, lpfc_used_rpi_show, NULL);
static DEVICE_ATTR(max_xri, S_IRUGO, lpfc_max_xri_show, NULL);
static DEVICE_ATTR(used_xri, S_IRUGO, lpfc_used_xri_show, NULL);
static DEVICE_ATTR(npiv_info, S_IRUGO, lpfc_npiv_info_show, NULL);
static DEVICE_ATTR(lpfc_temp_sensor, S_IRUGO, lpfc_temp_sensor_show, NULL);
static char *lpfc_soft_wwn_key = "C99G71SL8032A";
/**
* lpfc_soft_wwn_enable_store - Allows setting of the wwn if the key is valid
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: containing the string lpfc_soft_wwn_key.
* @count: must be size of lpfc_soft_wwn_key.
*
* Returns:
* -EINVAL if the buffer does not contain lpfc_soft_wwn_key
* length of buf indicates success
**/
static ssize_t
lpfc_soft_wwn_enable_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
unsigned int cnt = count;
/*
* 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--;
if ((cnt != strlen(lpfc_soft_wwn_key)) ||
(strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0))
return -EINVAL;
phba->soft_wwn_enable = 1;
return count;
}
static DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL,
lpfc_soft_wwn_enable_store);
/**
* lpfc_soft_wwpn_show - Return the cfg soft ww port name of the adapter
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the wwpn in hexadecimal.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_soft_wwpn_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
return snprintf(buf, PAGE_SIZE, "0x%llx\n",
(unsigned long long)phba->cfg_soft_wwpn);
}
/**
* lpfc_soft_wwpn_store - Set the ww port name of the adapter
* @dev class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: contains the wwpn in hexadecimal.
* @count: number of wwpn bytes in buf
*
* Returns:
* -EACCES hba reset not enabled, adapter over temp
* -EINVAL soft wwn not enabled, count is invalid, invalid wwpn byte invalid
* -EIO error taking adapter offline or online
* value of count on success
**/
static ssize_t
lpfc_soft_wwpn_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
struct completion online_compl;
int stat1=0, stat2=0;
unsigned int i, j, cnt=count;
u8 wwpn[8];
if (!phba->cfg_enable_hba_reset)
return -EACCES;
spin_lock_irq(&phba->hbalock);
if (phba->over_temp_state == HBA_OVER_TEMP) {
spin_unlock_irq(&phba->hbalock);
return -EACCES;
}
spin_unlock_irq(&phba->hbalock);
/* count may include a LF at end of string */
if (buf[cnt-1] == '\n')
cnt--;
if (!phba->soft_wwn_enable || (cnt < 16) || (cnt > 18) ||
((cnt == 17) && (*buf++ != 'x')) ||
((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x'))))
return -EINVAL;
phba->soft_wwn_enable = 0;
memset(wwpn, 0, sizeof(wwpn));
/* 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) {
wwpn[i/2] = j & 0xff;
j = 0;
}
}
phba->cfg_soft_wwpn = wwn_to_u64(wwpn);
fc_host_port_name(shost) = phba->cfg_soft_wwpn;
if (phba->cfg_soft_wwnn)
fc_host_node_name(shost) = phba->cfg_soft_wwnn;
dev_printk(KERN_NOTICE, &phba->pcidev->dev,
"lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no);
stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
if (stat1)
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0463 lpfc_soft_wwpn attribute set failed to "
"reinit adapter - %d\n", stat1);
init_completion(&online_compl);
lpfc_workq_post_event(phba, &stat2, &online_compl, LPFC_EVT_ONLINE);
wait_for_completion(&online_compl);
if (stat2)
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0464 lpfc_soft_wwpn attribute set failed to "
"reinit adapter - %d\n", stat2);
return (stat1 || stat2) ? -EIO : count;
}
static DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO | S_IWUSR,\
lpfc_soft_wwpn_show, lpfc_soft_wwpn_store);
/**
* lpfc_soft_wwnn_show - Return the cfg soft ww node name for the adapter
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: on return contains the wwnn in hexadecimal.
*
* Returns: size of formatted string.
**/
static ssize_t
lpfc_soft_wwnn_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
return snprintf(buf, PAGE_SIZE, "0x%llx\n",
(unsigned long long)phba->cfg_soft_wwnn);
}
/**
* lpfc_soft_wwnn_store - sets the ww node name of the adapter
* @cdev: class device that is converted into a Scsi_host.
* @buf: contains the ww node name in hexadecimal.
* @count: number of wwnn bytes in buf.
*
* Returns:
* -EINVAL soft wwn not enabled, count is invalid, invalid wwnn byte invalid
* value of count on success
**/
static ssize_t
lpfc_soft_wwnn_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
unsigned int i, j, cnt=count;
u8 wwnn[8];
/* count may include a LF at end of string */
if (buf[cnt-1] == '\n')
cnt--;
if (!phba->soft_wwn_enable || (cnt < 16) || (cnt > 18) ||
((cnt == 17) && (*buf++ != 'x')) ||
((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x'))))
return -EINVAL;
/*
* Allow wwnn to be set many times, as long as the enable is set.
* However, once the wwpn is set, everything locks.
*/
memset(wwnn, 0, sizeof(wwnn));
/* 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) {
wwnn[i/2] = j & 0xff;
j = 0;
}
}
phba->cfg_soft_wwnn = wwn_to_u64(wwnn);
dev_printk(KERN_NOTICE, &phba->pcidev->dev,
"lpfc%d: soft_wwnn set. Value will take effect upon "
"setting of the soft_wwpn\n", phba->brd_no);
return count;
}
static DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO | S_IWUSR,\
lpfc_soft_wwnn_show, lpfc_soft_wwnn_store);
static int lpfc_poll = 0;
module_param(lpfc_poll, int, 0);
MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:"
" 0 - none,"
" 1 - poll with interrupts enabled"
" 3 - poll and disable FCP ring interrupts");
static DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR,
lpfc_poll_show, lpfc_poll_store);
int lpfc_sli_mode = 0;
module_param(lpfc_sli_mode, int, 0);
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");
int lpfc_enable_npiv = 1;
module_param(lpfc_enable_npiv, int, 0);
MODULE_PARM_DESC(lpfc_enable_npiv, "Enable NPIV functionality");
lpfc_param_show(enable_npiv);
lpfc_param_init(enable_npiv, 1, 0, 1);
static DEVICE_ATTR(lpfc_enable_npiv, S_IRUGO, lpfc_enable_npiv_show, NULL);
/*
# 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.
*/
LPFC_ATTR_R(suppress_link_up, LPFC_INITIALIZE_LINK, LPFC_INITIALIZE_LINK,
LPFC_DELAY_INIT_LINK_INDEFINITELY,
"Suppress Link Up at initialization");
/*
# 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");
/**
* lpfc_nodev_tmo_show - Return the hba dev loss timeout value
* @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.
**/
static ssize_t
lpfc_nodev_tmo_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
return snprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_devloss_tmo);
}
/**
* lpfc_nodev_tmo_init - Set the hba nodev timeout value
* @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
**/
static int
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)
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0407 Ignoring nodev_tmo module "
"parameter because devloss_tmo is "
"set.\n");
return 0;
}
if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
vport->cfg_nodev_tmo = val;
vport->cfg_devloss_tmo = val;
return 0;
}
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);
vport->cfg_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
return -EINVAL;
}
/**
* lpfc_update_rport_devloss_tmo - Update dev loss tmo value
* @vport: lpfc vport structure pointer.
*
* Description:
* Update all the ndlp's dev loss tmo with the vport devloss tmo value.
**/
static void
lpfc_update_rport_devloss_tmo(struct lpfc_vport *vport)
{
struct Scsi_Host *shost;
struct lpfc_nodelist *ndlp;
shost = lpfc_shost_from_vport(vport);
spin_lock_irq(shost->host_lock);
list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp)
if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport)
ndlp->rport->dev_loss_tmo = vport->cfg_devloss_tmo;
spin_unlock_irq(shost->host_lock);
}
/**
* lpfc_nodev_tmo_set - Set the vport nodev tmo and devloss tmo values
* @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
**/
static int
lpfc_nodev_tmo_set(struct lpfc_vport *vport, int val)
{
if (vport->dev_loss_tmo_changed ||
(lpfc_devloss_tmo != LPFC_DEF_DEVLOSS_TMO)) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0401 Ignoring change to nodev_tmo "
"because devloss_tmo is set.\n");
return 0;
}
if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
vport->cfg_nodev_tmo = val;
vport->cfg_devloss_tmo = val;
lpfc_update_rport_devloss_tmo(vport);
return 0;
}
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);
return -EINVAL;
}
lpfc_vport_param_store(nodev_tmo)
static DEVICE_ATTR(lpfc_nodev_tmo, S_IRUGO | S_IWUSR,
lpfc_nodev_tmo_show, lpfc_nodev_tmo_store);
/*
# 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.
*/
module_param(lpfc_devloss_tmo, int, 0);
MODULE_PARM_DESC(lpfc_devloss_tmo,
"Seconds driver will hold I/O waiting "
"for a device to come back");
lpfc_vport_param_init(devloss_tmo, LPFC_DEF_DEVLOSS_TMO,
LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO)
lpfc_vport_param_show(devloss_tmo)
/**
* lpfc_devloss_tmo_set - Sets vport nodev tmo, devloss tmo values, changed bit
* @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
**/
static int
lpfc_devloss_tmo_set(struct lpfc_vport *vport, int val)
{
if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
vport->cfg_nodev_tmo = val;
vport->cfg_devloss_tmo = val;
vport->dev_loss_tmo_changed = 1;
lpfc_update_rport_devloss_tmo(vport);
return 0;
}
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);
return -EINVAL;
}
lpfc_vport_param_store(devloss_tmo)
static DEVICE_ATTR(lpfc_devloss_tmo, S_IRUGO | S_IWUSR,
lpfc_devloss_tmo_show, lpfc_devloss_tmo_store);
/*
# 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:
# See lpfc_logmsh.h for definitions.
*/
LPFC_VPORT_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffffffff,
"Verbose logging bit-mask");
/*
# lpfc_enable_da_id: This turns on the DA_ID CT command that deregisters
# objects that have been registered with the nameserver after login.
*/
LPFC_VPORT_ATTR_R(enable_da_id, 0, 0, 1,
"Deregister nameserver objects before LOGO");
/*
# lun_queue_depth: This parameter is used to limit the number of outstanding
# commands per FCP LUN. Value range is [1,128]. Default value is 30.
*/
LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1, 128,
"Max number of FCP commands we can queue to a specific LUN");
/*
# 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");
/*
# 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.
*/
LPFC_VPORT_ATTR_R(peer_port_login, 0, 0, 1,
"Allow peer ports on the same physical port to login to each "
"other.");
/*
# restrict_login: This parameter allows/prevents logins
# 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.
*/
static int lpfc_restrict_login = 1;
module_param(lpfc_restrict_login, int, 0);
MODULE_PARM_DESC(lpfc_restrict_login,
"Restrict virtual ports login to remote initiators.");
lpfc_vport_param_show(restrict_login);
/**
* lpfc_restrict_login_init - Set the vport restrict login flag
* @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
**/
static int
lpfc_restrict_login_init(struct lpfc_vport *vport, int val)
{
if (val < 0 || val > 1) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0422 lpfc_restrict_login attribute cannot "
"be set to %d, allowed range is [0, 1]\n",
val);
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;
}
/**
* lpfc_restrict_login_set - Set the vport restrict login flag
* @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
**/
static int
lpfc_restrict_login_set(struct lpfc_vport *vport, int val)
{
if (val < 0 || val > 1) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0425 lpfc_restrict_login attribute cannot "
"be set to %d, allowed range is [0, 1]\n",
val);
vport->cfg_restrict_login = 1;
return -EINVAL;
}
if (vport->port_type == LPFC_PHYSICAL_PORT && val != 0) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
"0468 lpfc_restrict_login must be 0 for "
"Physical ports.\n");
vport->cfg_restrict_login = 0;
return 0;
}
vport->cfg_restrict_login = val;
return 0;
}
lpfc_vport_param_store(restrict_login);
static DEVICE_ATTR(lpfc_restrict_login, S_IRUGO | S_IWUSR,
lpfc_restrict_login_show, lpfc_restrict_login_store);
/*
# 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.)
*/
LPFC_VPORT_ATTR_R(scan_down, 1, 0, 1,
"Start scanning for devices from highest ALPA to lowest");
/*
# lpfc_topology: link topology for init link
# 0x0 = attempt loop mode then point-to-point
# 0x01 = internal loopback mode
# 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.
*/
/**
* lpfc_topology_set - Set the adapters topology field
* @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
**/
static ssize_t
lpfc_topology_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;
int nolip = 0;
const char *val_buf = buf;
int err;
uint32_t prev_val;
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;
if (val >= 0 && val <= 6) {
prev_val = phba->cfg_topology;
phba->cfg_topology = val;
if (nolip)
return strlen(buf);
err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
if (err) {
phba->cfg_topology = prev_val;
return -EINVAL;
} else
return strlen(buf);
}
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;
module_param(lpfc_topology, int, 0);
MODULE_PARM_DESC(lpfc_topology, "Select Fibre Channel topology");
lpfc_param_show(topology)
lpfc_param_init(topology, 0, 0, 6)
static DEVICE_ATTR(lpfc_topology, S_IRUGO | S_IWUSR,
lpfc_topology_show, lpfc_topology_store);
/**
* 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);
/**
* lpfc_stat_data_ctrl_store - write call back for lpfc_stat_data_ctrl sysfs file
* @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"))) {
if (strlen(buf) > (LPFC_MAX_DATA_CTRL_LEN - 1))
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;
for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
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;
for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
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;
for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
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;
}
/**
* lpfc_stat_data_ctrl_show - Read function for lpfc_stat_data_ctrl sysfs file
* @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)
/**
* sysfs_drvr_stat_data_read - Read function for lpfc_drvr_stat_data attribute
* @filp: sysfs file
* @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
sysfs_drvr_stat_data_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
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,
.owner = THIS_MODULE,
},
.size = LPFC_MAX_TARGET * MAX_STAT_DATA_SIZE_PER_TARGET,
.read = sysfs_drvr_stat_data_read,
.write = NULL,
};
/*
# lpfc_link_speed: Link speed selection for initializing the Fibre Channel
# connection.
# 0 = auto select (default)
# 1 = 1 Gigabaud
# 2 = 2 Gigabaud
# 4 = 4 Gigabaud
# 8 = 8 Gigabaud
# Value range is [0,8]. Default value is 0.
*/
/**
* lpfc_link_speed_set - Set the adapters link speed
* @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
**/
static ssize_t
lpfc_link_speed_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;
int nolip = 0;
const char *val_buf = buf;
int err;
uint32_t prev_val;
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;
if (((val == LINK_SPEED_1G) && !(phba->lmt & LMT_1Gb)) ||
((val == LINK_SPEED_2G) && !(phba->lmt & LMT_2Gb)) ||
((val == LINK_SPEED_4G) && !(phba->lmt & LMT_4Gb)) ||
((val == LINK_SPEED_8G) && !(phba->lmt & LMT_8Gb)) ||
((val == LINK_SPEED_10G) && !(phba->lmt & LMT_10Gb)))
return -EINVAL;
if ((val >= 0 && val <= 8)
&& (LPFC_LINK_SPEED_BITMAP & (1 << val))) {
prev_val = phba->cfg_link_speed;
phba->cfg_link_speed = val;
if (nolip)
return strlen(buf);
err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
if (err) {
phba->cfg_link_speed = prev_val;
return -EINVAL;
} else
return strlen(buf);
}
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"%d:0469 lpfc_link_speed attribute cannot be set to %d, "
"allowed range is [0, 8]\n",
phba->brd_no, val);
return -EINVAL;
}
static int lpfc_link_speed = 0;
module_param(lpfc_link_speed, int, 0);
MODULE_PARM_DESC(lpfc_link_speed, "Select link speed");
lpfc_param_show(link_speed)
/**
* lpfc_link_speed_init - Set the adapters link speed
* @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
**/
static int
lpfc_link_speed_init(struct lpfc_hba *phba, int val)
{
if ((val >= 0 && val <= LPFC_MAX_LINK_SPEED)
&& (LPFC_LINK_SPEED_BITMAP & (1 << val))) {
phba->cfg_link_speed = val;
return 0;
}
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0405 lpfc_link_speed attribute cannot "
"be set to %d, allowed values are "
"["LPFC_LINK_SPEED_STRING"]\n", val);
phba->cfg_link_speed = 0;
return -EINVAL;
}
static DEVICE_ATTR(lpfc_link_speed, S_IRUGO | S_IWUSR,
lpfc_link_speed_show, lpfc_link_speed_store);
/*
# 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.
* @buf: containing the string "selective".
* @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;
/* AER not supported on OC devices yet */
if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
return -EPERM;
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
rc = -EPERM;
} else {
phba->cfg_aer_support = 0;
rc = strlen(buf);
}
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
rc = -EPERM;
} else {
phba->cfg_aer_support = 1;
rc = strlen(buf);
}
break;
default:
rc = -EINVAL;
break;
}
return rc;
}
static int lpfc_aer_support = 1;
module_param(lpfc_aer_support, int, 1);
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.
* @val: link speed value.
*
* 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)
{
/* AER not supported on OC devices yet */
if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
phba->cfg_aer_support = 0;
return -EPERM;
}
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);
/* By default, try to enable AER on a device */
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.
* @buf: containing the string "selective".
* @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;
/* AER not supported on OC devices yet */
if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
return -EPERM;
if (!isdigit(buf[0]))
return -EINVAL;
if (sscanf(buf, "%i", &val) != 1)
return -EINVAL;
if (val != 1)
return -EINVAL;
if (phba->hba_flag & HBA_AER_ENABLED)
rc = pci_cleanup_aer_uncorrect_error_status(phba->pcidev);
if (rc == 0)
return strlen(buf);
else
return -EPERM;
}
static DEVICE_ATTR(lpfc_aer_state_cleanup, S_IWUSR, NULL,
lpfc_aer_cleanup_state);
/*
# lpfc_fcp_class: Determines FC class to use for the FCP protocol.
# Value range is [2,3]. Default value is 3.
*/
LPFC_VPORT_ATTR_R(fcp_class, 3, 2, 3,
"Select Fibre Channel class of service for FCP sequences");
/*
# lpfc_use_adisc: Use ADISC for FCP rediscovery instead of PLOGI. Value range
# is [0,1]. Default value is 0.
*/
LPFC_VPORT_ATTR_RW(use_adisc, 0, 0, 1,
"Use ADISC on rediscovery to authenticate FCP devices");
/*
# 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;
module_param(lpfc_max_scsicmpl_time, int, 0);
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;
ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
}
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);
/*
# 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");
/*
# lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing
# cr_delay (msec) or cr_count outstanding commands. cr_delay can take
# value [0,63]. cr_count can take value [1,255]. Default value of cr_delay
# is 0. Default value of cr_count is 1. The cr_count feature is disabled if
# cr_delay is set to 0.
*/
LPFC_ATTR_RW(cr_delay, 0, 0, 63, "A count of milliseconds after which an "
"interrupt response is generated");
LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an "
"interrupt response is generated");
/*
# 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");
/*
# 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).
*/
LPFC_ATTR_R(multi_ring_rctl, FC_RCTL_DD_UNSOL_DATA, 1,
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).
*/
LPFC_ATTR_R(multi_ring_type, FC_TYPE_IP, 1,
255, "Identifies TYPE for additional ring configuration");
/*
# 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.
*/
LPFC_VPORT_ATTR_RW(fdmi_on, 0, 0, 2, "Enable FDMI support");
/*
# Specifies the maximum number of ELS cmds we can have outstanding (for
# discovery). Value range is [1,64]. Default value = 32.
*/
LPFC_VPORT_ATTR(discovery_threads, 32, 1, 64, "Maximum number of ELS commands "
"during discovery");
/*
# lpfc_max_luns: maximum allowed LUN.
# Value range is [0,65535]. Default value is 255.
# NOTE: The SCSI layer might probe all allowed LUN on some old targets.
*/
LPFC_VPORT_ATTR_R(max_luns, 255, 0, 65535, "Maximum allowed LUN");
/*
# 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");
/*
# lpfc_use_msi: Use MSI (Message Signaled Interrupts) in systems that
# support this feature
# 0 = MSI disabled
# 1 = MSI enabled
# 2 = MSI-X enabled (default)
# Value range is [0,2]. Default value is 2.
*/
LPFC_ATTR_R(use_msi, 2, 0, 2, "Use Message Signaled Interrupts (1) or "
"MSI-X (2), if possible");
/*
# lpfc_fcp_imax: Set the maximum number of fast-path FCP interrupts per second
#
# Value range is [636,651042]. Default value is 10000.
*/
LPFC_ATTR_R(fcp_imax, LPFC_FP_DEF_IMAX, LPFC_MIM_IMAX, LPFC_DMULT_CONST,
"Set the maximum number of fast-path FCP interrupts per second");
/*
# lpfc_fcp_wq_count: Set the number of fast-path FCP work queues
#
# Value range is [1,31]. Default value is 4.
*/
LPFC_ATTR_R(fcp_wq_count, LPFC_FP_WQN_DEF, LPFC_FP_WQN_MIN, LPFC_FP_WQN_MAX,
"Set the number of fast-path FCP work queues, if possible");
/*
# lpfc_fcp_eq_count: Set the number of fast-path FCP event queues
#
# Value range is [1,7]. Default value is 1.
*/
LPFC_ATTR_R(fcp_eq_count, LPFC_FP_EQN_DEF, LPFC_FP_EQN_MIN, LPFC_FP_EQN_MAX,
"Set the number of fast-path FCP event queues, if possible");
/*
# 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.");
/*
# lpfc_enable_hba_heartbeat: Enable HBA heartbeat timer..
# 0 = HBA Heartbeat disabled
# 1 = HBA Heartbeat enabled (default)
# Value range is [0,1]. Default value is 1.
*/
LPFC_ATTR_R(enable_hba_heartbeat, 1, 0, 1, "Enable HBA Heartbeat.");
/*
# 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");
/*
# 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.
#
*/
unsigned int lpfc_prot_mask = SHOST_DIX_TYPE0_PROTECTION;
module_param(lpfc_prot_mask, uint, 0);
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
# - Guard types are currently either 1) IP checksum 2) T10-DIF CRC
# - 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;
module_param(lpfc_prot_guard, byte, 0);
MODULE_PARM_DESC(lpfc_prot_guard, "host protection guard type");
/*
* lpfc_sg_seg_cnt - Initial Maximum DMA Segment Count
* This value can be set to values between 64 and 256. The default value is
* 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).
*/
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");
LPFC_ATTR_R(prot_sg_seg_cnt, LPFC_DEFAULT_PROT_SG_SEG_CNT,
LPFC_DEFAULT_PROT_SG_SEG_CNT, LPFC_MAX_PROT_SG_SEG_CNT,
"Max Protection Scatter Gather Segment Count");
struct device_attribute *lpfc_hba_attrs[] = {
&dev_attr_bg_info,
&dev_attr_bg_guard_err,
&dev_attr_bg_apptag_err,
&dev_attr_bg_reftag_err,
&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,
&dev_attr_link_state,
&dev_attr_num_discovered_ports,
&dev_attr_menlo_mgmt_mode,
&dev_attr_lpfc_drvr_version,
&dev_attr_lpfc_enable_fip,
&dev_attr_lpfc_temp_sensor,
&dev_attr_lpfc_log_verbose,
&dev_attr_lpfc_lun_queue_depth,
&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,
&dev_attr_lpfc_ack0,
&dev_attr_lpfc_topology,
&dev_attr_lpfc_scan_down,
&dev_attr_lpfc_link_speed,
&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,
&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,
&dev_attr_lpfc_use_msi,
&dev_attr_lpfc_fcp_imax,
&dev_attr_lpfc_fcp_wq_count,
&dev_attr_lpfc_fcp_eq_count,
&dev_attr_lpfc_enable_bg,
&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,
&dev_attr_lpfc_sg_seg_cnt,
&dev_attr_lpfc_max_scsicmpl_time,
&dev_attr_lpfc_stat_data_ctrl,
&dev_attr_lpfc_prot_sg_seg_cnt,
&dev_attr_lpfc_aer_support,
&dev_attr_lpfc_aer_state_cleanup,
&dev_attr_lpfc_suppress_link_up,
NULL,
};
struct device_attribute *lpfc_vport_attrs[] = {
&dev_attr_info,
&dev_attr_link_state,
&dev_attr_num_discovered_ports,
&dev_attr_lpfc_drvr_version,
&dev_attr_lpfc_log_verbose,
&dev_attr_lpfc_lun_queue_depth,
&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,
&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,
&dev_attr_lpfc_max_scsicmpl_time,
&dev_attr_lpfc_stat_data_ctrl,
&dev_attr_lpfc_static_vport,
NULL,
};
/**
* sysfs_ctlreg_write - Write method for writing to ctlreg
* @filp: open sysfs file
* @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
**/
static ssize_t
sysfs_ctlreg_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
size_t buf_off;
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;
if (phba->sli_rev >= LPFC_SLI_REV4)
return -EPERM;
if ((off + count) > FF_REG_AREA_SIZE)
return -ERANGE;
if (count == 0) return 0;
if (off % 4 || count % 4 || (unsigned long)buf % 4)
return -EINVAL;
if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
return -EPERM;
}
spin_lock_irq(&phba->hbalock);
for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t))
writel(*((uint32_t *)(buf + buf_off)),
phba->ctrl_regs_memmap_p + off + buf_off);
spin_unlock_irq(&phba->hbalock);
return count;
}
/**
* sysfs_ctlreg_read - Read method for reading from ctlreg
* @filp: open sysfs file
* @kobj: kernel kobject that contains the kernel class device.
* @bin_attr: kernel attributes passed to us.
* @buf: if successful contains the data from 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 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
**/
static ssize_t
sysfs_ctlreg_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
size_t buf_off;
uint32_t * tmp_ptr;
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;
if (phba->sli_rev >= LPFC_SLI_REV4)
return -EPERM;
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;
spin_lock_irq(&phba->hbalock);
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);
}
spin_unlock_irq(&phba->hbalock);
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,
};
/**
* sysfs_mbox_idle - frees the sysfs mailbox
* @phba: lpfc_hba pointer
**/
static void
sysfs_mbox_idle(struct lpfc_hba *phba)
{
phba->sysfs_mbox.state = SMBOX_IDLE;
phba->sysfs_mbox.offset = 0;
if (phba->sysfs_mbox.mbox) {
mempool_free(phba->sysfs_mbox.mbox,
phba->mbox_mem_pool);
phba->sysfs_mbox.mbox = NULL;
}
}
/**
* sysfs_mbox_write - Write method for writing information via mbox
* @filp: open sysfs file
* @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:
* Accessed via /sys/class/scsi_host/hostxxx/mbox.
* Uses the sysfs mbox to send buf contents to the adapter.
*
* Returns:
* -ERANGE off and count combo out of range
* -EINVAL off, count or buff address invalid
* zero if count is zero
* -EPERM adapter is offline
* -ENOMEM failed to allocate memory for the mail box
* -EAGAIN offset, state or mbox is NULL
* count number of bytes transferred
**/
static ssize_t
sysfs_mbox_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
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;
struct lpfcMboxq *mbox = NULL;
if ((count + off) > MAILBOX_CMD_SIZE)
return -ERANGE;
if (off % 4 || count % 4 || (unsigned long)buf % 4)
return -EINVAL;
if (count == 0)
return 0;
if (off == 0) {
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
memset(mbox, 0, sizeof (LPFC_MBOXQ_t));
}
spin_lock_irq(&phba->hbalock);
if (off == 0) {
if (phba->sysfs_mbox.mbox)
mempool_free(mbox, phba->mbox_mem_pool);
else
phba->sysfs_mbox.mbox = mbox;
phba->sysfs_mbox.state = SMBOX_WRITING;
} else {
if (phba->sysfs_mbox.state != SMBOX_WRITING ||
phba->sysfs_mbox.offset != off ||
phba->sysfs_mbox.mbox == NULL) {
sysfs_mbox_idle(phba);
spin_unlock_irq(&phba->hbalock);
return -EAGAIN;
}
}
memcpy((uint8_t *) &phba->sysfs_mbox.mbox->u.mb + off,
buf, count);
phba->sysfs_mbox.offset = off + count;
spin_unlock_irq(&phba->hbalock);
return count;
}
/**
* sysfs_mbox_read - Read method for reading information via mbox
* @filp: open sysfs file
* @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:
* Accessed via /sys/class/scsi_host/hostxxx/mbox.
* Uses the sysfs mbox to receive data from to the adapter.
*
* Returns:
* -ERANGE off greater than mailbox command size
* -EINVAL off, count or buff address invalid
* zero if off and count are zero
* -EACCES adapter over temp
* -EPERM garbage can value to catch a multitude of errors
* -EAGAIN management IO not permitted, state or off error
* -ETIME mailbox timeout
* -ENODEV mailbox error
* count number of bytes transferred
**/
static ssize_t
sysfs_mbox_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr,
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 rc;
MAILBOX_t *pmb;
if (off > MAILBOX_CMD_SIZE)
return -ERANGE;
if ((count + off) > MAILBOX_CMD_SIZE)
count = MAILBOX_CMD_SIZE - off;
if (off % 4 || count % 4 || (unsigned long)buf % 4)
return -EINVAL;
if (off && count == 0)
return 0;
spin_lock_irq(&phba->hbalock);
if (phba->over_temp_state == HBA_OVER_TEMP) {
sysfs_mbox_idle(phba);
spin_unlock_irq(&phba->hbalock);
return -EACCES;
}
if (off == 0 &&
phba->sysfs_mbox.state == SMBOX_WRITING &&
phba->sysfs_mbox.offset >= 2 * sizeof(uint32_t)) {
pmb = &phba->sysfs_mbox.mbox->u.mb;
switch (pmb->mbxCommand) {
/* Offline only */
case MBX_INIT_LINK:
case MBX_DOWN_LINK:
case MBX_CONFIG_LINK:
case MBX_CONFIG_RING:
case MBX_RESET_RING:
case MBX_UNREG_LOGIN:
case MBX_CLEAR_LA:
case MBX_DUMP_CONTEXT:
case MBX_RUN_DIAGS:
case MBX_RESTART:
case MBX_SET_MASK:
case MBX_SET_DEBUG:
if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
printk(KERN_WARNING "mbox_read:Command 0x%x "
"is illegal in on-line state\n",
pmb->mbxCommand);
sysfs_mbox_idle(phba);
spin_unlock_irq(&phba->hbalock);
return -EPERM;
}
case MBX_WRITE_NV:
case MBX_WRITE_VPARMS:
case MBX_LOAD_SM:
case MBX_READ_NV:
case MBX_READ_CONFIG:
case MBX_READ_RCONFIG:
case MBX_READ_STATUS:
case MBX_READ_XRI:
case MBX_READ_REV:
case MBX_READ_LNK_STAT:
case MBX_DUMP_MEMORY:
case MBX_DOWN_LOAD:
case MBX_UPDATE_CFG:
case MBX_KILL_BOARD:
case MBX_LOAD_AREA:
case MBX_LOAD_EXP_ROM:
case MBX_BEACON:
case MBX_DEL_LD_ENTRY:
case MBX_SET_VARIABLE:
case MBX_WRITE_WWN:
case MBX_PORT_CAPABILITIES:
case MBX_PORT_IOV_CONTROL:
break;
case MBX_READ_SPARM64:
case MBX_READ_LA:
case MBX_READ_LA64:
case MBX_REG_LOGIN:
case MBX_REG_LOGIN64:
case MBX_CONFIG_PORT:
case MBX_RUN_BIU_DIAG:
printk(KERN_WARNING "mbox_read: Illegal Command 0x%x\n",
pmb->mbxCommand);
sysfs_mbox_idle(phba);
spin_unlock_irq(&phba->hbalock);
return -EPERM;
default:
printk(KERN_WARNING "mbox_read: Unknown Command 0x%x\n",
pmb->mbxCommand);
sysfs_mbox_idle(phba);
spin_unlock_irq(&phba->hbalock);
return -EPERM;
}
/* If HBA encountered an error attention, allow only DUMP
* or RESTART mailbox commands until the HBA is restarted.
*/
if (phba->pport->stopped &&
pmb->mbxCommand != MBX_DUMP_MEMORY &&
pmb->mbxCommand != MBX_RESTART &&
pmb->mbxCommand != MBX_WRITE_VPARMS &&
pmb->mbxCommand != MBX_WRITE_WWN)
lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
"1259 mbox: Issued mailbox cmd "
"0x%x while in stopped state.\n",
pmb->mbxCommand);
phba->sysfs_mbox.mbox->vport = vport;
/* Don't allow mailbox commands to be sent when blocked
* or when in the middle of discovery
*/
if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
sysfs_mbox_idle(phba);
spin_unlock_irq(&phba->hbalock);
return -EAGAIN;
}
if ((vport->fc_flag & FC_OFFLINE_MODE) ||
(!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) {
spin_unlock_irq(&phba->hbalock);
rc = lpfc_sli_issue_mbox (phba,
phba->sysfs_mbox.mbox,
MBX_POLL);
spin_lock_irq(&phba->hbalock);
} else {
spin_unlock_irq(&phba->hbalock);
rc = lpfc_sli_issue_mbox_wait (phba,
phba->sysfs_mbox.mbox,
lpfc_mbox_tmo_val(phba, pmb->mbxCommand) * HZ);
spin_lock_irq(&phba->hbalock);
}
if (rc != MBX_SUCCESS) {
if (rc == MBX_TIMEOUT) {
phba->sysfs_mbox.mbox = NULL;
}
sysfs_mbox_idle(phba);
spin_unlock_irq(&phba->hbalock);
return (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
}
phba->sysfs_mbox.state = SMBOX_READING;
}
else if (phba->sysfs_mbox.offset != off ||
phba->sysfs_mbox.state != SMBOX_READING) {
printk(KERN_WARNING "mbox_read: Bad State\n");
sysfs_mbox_idle(phba);
spin_unlock_irq(&phba->hbalock);
return -EAGAIN;
}
memcpy(buf, (uint8_t *) &pmb + off, count);
phba->sysfs_mbox.offset = off + count;
if (phba->sysfs_mbox.offset == MAILBOX_CMD_SIZE)
sysfs_mbox_idle(phba);
spin_unlock_irq(&phba->hbalock);
return count;
}
static struct bin_attribute sysfs_mbox_attr = {
.attr = {
.name = "mbox",
.mode = S_IRUSR | S_IWUSR,
},
.size = MAILBOX_CMD_SIZE,
.read = sysfs_mbox_read,
.write = sysfs_mbox_write,
};
/**
* lpfc_alloc_sysfs_attr - Creates the ctlreg and mbox entries
* @vport: address of lpfc vport structure.
*
* Return codes:
* zero on success
* error return code from sysfs_create_bin_file()
**/
int
lpfc_alloc_sysfs_attr(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
int error;
error = sysfs_create_bin_file(&shost->shost_dev.kobj,
&sysfs_drvr_stat_data_attr);
/* Virtual ports do not need ctrl_reg and mbox */
if (error || vport->port_type == LPFC_NPIV_PORT)
goto out;
error = sysfs_create_bin_file(&shost->shost_dev.kobj,
&sysfs_ctlreg_attr);
if (error)
goto out_remove_stat_attr;
error = sysfs_create_bin_file(&shost->shost_dev.kobj,
&sysfs_mbox_attr);
if (error)
goto out_remove_ctlreg_attr;
return 0;
out_remove_ctlreg_attr:
sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
out_remove_stat_attr:
sysfs_remove_bin_file(&shost->shost_dev.kobj,
&sysfs_drvr_stat_data_attr);
out:
return error;
}
/**
* lpfc_free_sysfs_attr - Removes the ctlreg and mbox entries
* @vport: address of lpfc vport structure.
**/
void
lpfc_free_sysfs_attr(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
sysfs_remove_bin_file(&shost->shost_dev.kobj,
&sysfs_drvr_stat_data_attr);
/* Virtual ports do not need ctrl_reg and mbox */
if (vport->port_type == LPFC_NPIV_PORT)
return;
sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_mbox_attr);
sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
}
/*
* Dynamic FC Host Attributes Support
*/
/**
* lpfc_get_host_port_id - Copy the vport DID into the scsi host port id
* @shost: kernel scsi host pointer.
**/
static void
lpfc_get_host_port_id(struct Scsi_Host *shost)
{
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
/* note: fc_myDID already in cpu endianness */
fc_host_port_id(shost) = vport->fc_myDID;
}
/**
* lpfc_get_host_port_type - Set the value of the scsi host port type
* @shost: kernel scsi host pointer.
**/
static void
lpfc_get_host_port_type(struct Scsi_Host *shost)
{
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
spin_lock_irq(shost->host_lock);
if (vport->port_type == LPFC_NPIV_PORT) {
fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
} else if (lpfc_is_link_up(phba)) {
if (phba->fc_topology == TOPOLOGY_LOOP) {
if (vport->fc_flag & FC_PUBLIC_LOOP)
fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
else
fc_host_port_type(shost) = FC_PORTTYPE_LPORT;
} else {
if (vport->fc_flag & FC_FABRIC)
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);
}
/**
* lpfc_get_host_port_state - Set the value of the scsi host port state
* @shost: kernel scsi host pointer.
**/
static void
lpfc_get_host_port_state(struct Scsi_Host *shost)
{
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
spin_lock_irq(shost->host_lock);
if (vport->fc_flag & FC_OFFLINE_MODE)
fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
else {
switch (phba->link_state) {
case LPFC_LINK_UNKNOWN:
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:
/* Links up, beyond this port_type reports state */
fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
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);
}
/**
* lpfc_get_host_speed - Set the value of the scsi host speed
* @shost: kernel scsi host pointer.
**/
static void
lpfc_get_host_speed(struct Scsi_Host *shost)
{
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
spin_lock_irq(shost->host_lock);
if (lpfc_is_link_up(phba)) {
switch(phba->fc_linkspeed) {
case LA_1GHZ_LINK:
fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
break;
case LA_2GHZ_LINK:
fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
break;
case LA_4GHZ_LINK:
fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
break;
case LA_8GHZ_LINK:
fc_host_speed(shost) = FC_PORTSPEED_8GBIT;
break;
case LA_10GHZ_LINK:
fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
break;
default:
fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
break;
}
} else
fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
spin_unlock_irq(shost->host_lock);
}
/**
* lpfc_get_host_fabric_name - Set the value of the scsi host fabric name
* @shost: kernel scsi host pointer.
**/
static void
lpfc_get_host_fabric_name (struct Scsi_Host *shost)
{
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
u64 node_name;
spin_lock_irq(shost->host_lock);
if ((vport->fc_flag & FC_FABRIC) ||
((phba->fc_topology == TOPOLOGY_LOOP) &&
(vport->fc_flag & FC_PUBLIC_LOOP)))
node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
else
/* fabric is local port if there is no F/FL_Port */
node_name = 0;
spin_unlock_irq(shost->host_lock);
fc_host_fabric_name(shost) = node_name;
}
/**
* lpfc_get_stats - Return statistical information about the adapter
* @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
**/
static struct fc_host_statistics *
lpfc_get_stats(struct Scsi_Host *shost)
{
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_hba *phba = vport->phba;
struct lpfc_sli *psli = &phba->sli;
struct fc_host_statistics *hs = &phba->link_stats;
struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
LPFC_MBOXQ_t *pmboxq;
MAILBOX_t *pmb;
unsigned long seconds;
int rc = 0;
/*
* prevent udev from issuing mailbox commands until the port is
* configured.
*/
if (phba->link_state < LPFC_LINK_DOWN ||
!phba->mbox_mem_pool ||
(phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
return NULL;
if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
return NULL;
pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmboxq)
return NULL;
memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
pmb = &pmboxq->u.mb;
pmb->mbxCommand = MBX_READ_STATUS;
pmb->mbxOwner = OWN_HOST;
pmboxq->context1 = NULL;
pmboxq->vport = vport;
if ((vport->fc_flag & FC_OFFLINE_MODE) ||
(!(psli->sli_flag & LPFC_SLI_ACTIVE)))
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) {
if (rc != MBX_TIMEOUT)
mempool_free(pmboxq, phba->mbox_mem_pool);
return NULL;
}
memset(hs, 0, sizeof (struct fc_host_statistics));
hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
hs->tx_words = (pmb->un.varRdStatus.xmitByteCnt * 256);
hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;
hs->rx_words = (pmb->un.varRdStatus.rcvByteCnt * 256);
memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
pmb->mbxCommand = MBX_READ_LNK_STAT;
pmb->mbxOwner = OWN_HOST;
pmboxq->context1 = NULL;
pmboxq->vport = vport;
if ((vport->fc_flag & FC_OFFLINE_MODE) ||
(!(psli->sli_flag & LPFC_SLI_ACTIVE)))
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) {
if (rc != MBX_TIMEOUT)
mempool_free(pmboxq, phba->mbox_mem_pool);
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;
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;
if (phba->hba_flag & HBA_FCOE_SUPPORT) {
hs->lip_count = -1;
hs->nos_count = (phba->link_events >> 1);
hs->nos_count -= lso->link_events;
} else if (phba->fc_topology == TOPOLOGY_LOOP) {
hs->lip_count = (phba->fc_eventTag >> 1);
hs->lip_count -= lso->link_events;
hs->nos_count = -1;
} else {
hs->lip_count = -1;
hs->nos_count = (phba->fc_eventTag >> 1);
hs->nos_count -= lso->link_events;
}
hs->dumped_frames = -1;
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;
mempool_free(pmboxq, phba->mbox_mem_pool);
return hs;
}
/**
* lpfc_reset_stats - Copy the adapter link stats information
* @shost: kernel scsi host pointer.
**/
static void
lpfc_reset_stats(struct Scsi_Host *shost)
{
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;
LPFC_MBOXQ_t *pmboxq;
MAILBOX_t *pmb;
int rc = 0;
if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
return;
pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmboxq)
return;
memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
pmb = &pmboxq->u.mb;
pmb->mbxCommand = MBX_READ_STATUS;
pmb->mbxOwner = OWN_HOST;
pmb->un.varWords[0] = 0x1; /* reset request */
pmboxq->context1 = NULL;
pmboxq->vport = vport;
if ((vport->fc_flag & FC_OFFLINE_MODE) ||
(!(psli->sli_flag & LPFC_SLI_ACTIVE)))
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) {
if (rc != MBX_TIMEOUT)
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;
pmboxq->vport = vport;
if ((vport->fc_flag & FC_OFFLINE_MODE) ||
(!(psli->sli_flag & LPFC_SLI_ACTIVE)))
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) {
if (rc != MBX_TIMEOUT)
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;
if (phba->hba_flag & HBA_FCOE_SUPPORT)
lso->link_events = (phba->link_events >> 1);
else
lso->link_events = (phba->fc_eventTag >> 1);
psli->stats_start = get_seconds();
mempool_free(pmboxq, phba->mbox_mem_pool);
return;
}
/*
* The LPFC driver treats linkdown handling as target loss events so there
* are no sysfs handlers for link_down_tmo.
*/
/**
* lpfc_get_node_by_target - Return the nodelist for a target
* @starget: kernel scsi target pointer.
*
* Returns:
* address of the node list if found
* NULL target not found
**/
static struct lpfc_nodelist *
lpfc_get_node_by_target(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
struct lpfc_nodelist *ndlp;
spin_lock_irq(shost->host_lock);
/* Search for this, mapped, target ID */
list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
if (NLP_CHK_NODE_ACT(ndlp) &&
ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
starget->id == ndlp->nlp_sid) {
spin_unlock_irq(shost->host_lock);
return ndlp;
}
}
spin_unlock_irq(shost->host_lock);
return NULL;
}
/**
* lpfc_get_starget_port_id - Set the target port id to the ndlp DID or -1
* @starget: kernel scsi target pointer.
**/
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;
}
/**
* lpfc_get_starget_node_name - Set the target node name
* @starget: kernel scsi target pointer.
*
* Description: Set the target node name to the ndlp node name wwn or zero.
**/
static void
lpfc_get_starget_node_name(struct scsi_target *starget)
{
struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
fc_starget_node_name(starget) =
ndlp ? wwn_to_u64(ndlp->nlp_nodename.u.wwn) : 0;
}
/**
* lpfc_get_starget_port_name - Set the target port name
* @starget: kernel scsi target pointer.
*
* Description: set the target port name to the ndlp port name wwn or zero.
**/
static void
lpfc_get_starget_port_name(struct scsi_target *starget)
{
struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
fc_starget_port_name(starget) =
ndlp ? wwn_to_u64(ndlp->nlp_portname.u.wwn) : 0;
}
/**
* lpfc_set_rport_loss_tmo - Set the rport dev loss tmo
* @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.
**/
static void
lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
{
if (timeout)
rport->dev_loss_tmo = timeout;
else
rport->dev_loss_tmo = 1;
}
/**
* lpfc_rport_show_function - Return rport target information
*
* 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.
**/
#define lpfc_rport_show_function(field, format_string, sz, cast) \
static ssize_t \
lpfc_show_rport_##field (struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
struct fc_rport *rport = transport_class_to_rport(dev); \
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)
/**
* lpfc_set_vport_symbolic_name - Set the vport's symbolic name
* @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
* switch to propogate the change into the fabric if the vport is active.
**/
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);
}
/**
* 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
* log messsage according to the module's lpfc_log_verbose parameter setting
* 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;
}
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,
.show_host_symbolic_name = 1,
/* 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,
.issue_fc_host_lip = lpfc_issue_lip,
.dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
.terminate_rport_io = lpfc_terminate_rport_io,
.dd_fcvport_size = sizeof(struct lpfc_vport *),
.vport_disable = lpfc_vport_disable,
.set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
.bsg_request = lpfc_bsg_request,
.bsg_timeout = lpfc_bsg_timeout,
};
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,
.show_host_symbolic_name = 1,
/* 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,
.set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
};
/**
* lpfc_get_cfgparam - Used during probe_one to init the adapter structure
* @phba: lpfc_hba pointer.
**/
void
lpfc_get_cfgparam(struct lpfc_hba *phba)
{
lpfc_cr_delay_init(phba, lpfc_cr_delay);
lpfc_cr_count_init(phba, lpfc_cr_count);
lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support);
lpfc_multi_ring_rctl_init(phba, lpfc_multi_ring_rctl);
lpfc_multi_ring_type_init(phba, lpfc_multi_ring_type);
lpfc_ack0_init(phba, lpfc_ack0);
lpfc_topology_init(phba, lpfc_topology);
lpfc_link_speed_init(phba, lpfc_link_speed);
lpfc_poll_tmo_init(phba, lpfc_poll_tmo);
lpfc_enable_npiv_init(phba, lpfc_enable_npiv);
lpfc_use_msi_init(phba, lpfc_use_msi);
lpfc_fcp_imax_init(phba, lpfc_fcp_imax);
lpfc_fcp_wq_count_init(phba, lpfc_fcp_wq_count);
lpfc_fcp_eq_count_init(phba, lpfc_fcp_eq_count);
lpfc_enable_hba_reset_init(phba, lpfc_enable_hba_reset);
lpfc_enable_hba_heartbeat_init(phba, lpfc_enable_hba_heartbeat);
lpfc_enable_bg_init(phba, lpfc_enable_bg);
if (phba->sli_rev == LPFC_SLI_REV4)
phba->cfg_poll = 0;
else
phba->cfg_poll = lpfc_poll;
phba->cfg_soft_wwnn = 0L;
phba->cfg_soft_wwpn = 0L;
lpfc_sg_seg_cnt_init(phba, lpfc_sg_seg_cnt);
lpfc_prot_sg_seg_cnt_init(phba, lpfc_prot_sg_seg_cnt);
lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth);
lpfc_hba_log_verbose_init(phba, lpfc_log_verbose);
lpfc_aer_support_init(phba, lpfc_aer_support);
lpfc_suppress_link_up_init(phba, lpfc_suppress_link_up);
return;
}
/**
* lpfc_get_vport_cfgparam - Used during port create, init the vport structure
* @vport: lpfc_vport pointer.
**/
void
lpfc_get_vport_cfgparam(struct lpfc_vport *vport)
{
lpfc_log_verbose_init(vport, lpfc_log_verbose);
lpfc_lun_queue_depth_init(vport, lpfc_lun_queue_depth);
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);
lpfc_max_scsicmpl_time_init(vport, lpfc_max_scsicmpl_time);
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);
lpfc_enable_da_id_init(vport, lpfc_enable_da_id);
return;
}