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lpfc_init.c
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/*******************************************************************
* 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/blkdev.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/idr.h>
#include <linux/interrupt.h>
#include <linux/kthread.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/ctype.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>
#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_crtn.h"
#include "lpfc_vport.h"
#include "lpfc_version.h"
char *_dump_buf_data;
unsigned long _dump_buf_data_order;
char *_dump_buf_dif;
unsigned long _dump_buf_dif_order;
spinlock_t _dump_buf_lock;
static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
static int lpfc_post_rcv_buf(struct lpfc_hba *);
static int lpfc_sli4_queue_create(struct lpfc_hba *);
static void lpfc_sli4_queue_destroy(struct lpfc_hba *);
static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
static int lpfc_setup_endian_order(struct lpfc_hba *);
static int lpfc_sli4_read_config(struct lpfc_hba *);
static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
static void lpfc_free_sgl_list(struct lpfc_hba *);
static int lpfc_init_sgl_list(struct lpfc_hba *);
static int lpfc_init_active_sgl_array(struct lpfc_hba *);
static void lpfc_free_active_sgl(struct lpfc_hba *);
static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
static struct scsi_transport_template *lpfc_transport_template = NULL;
static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
static DEFINE_IDR(lpfc_hba_index);
/**
* lpfc_config_port_prep - Perform lpfc initialization prior to config port
* @phba: pointer to lpfc hba data structure.
*
* This routine will do LPFC initialization prior to issuing the CONFIG_PORT
* mailbox command. It retrieves the revision information from the HBA and
* collects the Vital Product Data (VPD) about the HBA for preparing the
* configuration of the HBA.
*
* Return codes:
* 0 - success.
* -ERESTART - requests the SLI layer to reset the HBA and try again.
* Any other value - indicates an error.
**/
int
lpfc_config_port_prep(struct lpfc_hba *phba)
{
lpfc_vpd_t *vp = &phba->vpd;
int i = 0, rc;
LPFC_MBOXQ_t *pmb;
MAILBOX_t *mb;
char *lpfc_vpd_data = NULL;
uint16_t offset = 0;
static char licensed[56] =
"key unlock for use with gnu public licensed code only\0";
static int init_key = 1;
pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmb) {
phba->link_state = LPFC_HBA_ERROR;
return -ENOMEM;
}
mb = &pmb->u.mb;
phba->link_state = LPFC_INIT_MBX_CMDS;
if (lpfc_is_LC_HBA(phba->pcidev->device)) {
if (init_key) {
uint32_t *ptext = (uint32_t *) licensed;
for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
*ptext = cpu_to_be32(*ptext);
init_key = 0;
}
lpfc_read_nv(phba, pmb);
memset((char*)mb->un.varRDnvp.rsvd3, 0,
sizeof (mb->un.varRDnvp.rsvd3));
memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
sizeof (licensed));
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
if (rc != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
"0324 Config Port initialization "
"error, mbxCmd x%x READ_NVPARM, "
"mbxStatus x%x\n",
mb->mbxCommand, mb->mbxStatus);
mempool_free(pmb, phba->mbox_mem_pool);
return -ERESTART;
}
memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
sizeof(phba->wwnn));
memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
sizeof(phba->wwpn));
}
phba->sli3_options = 0x0;
/* Setup and issue mailbox READ REV command */
lpfc_read_rev(phba, pmb);
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
if (rc != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0439 Adapter failed to init, mbxCmd x%x "
"READ_REV, mbxStatus x%x\n",
mb->mbxCommand, mb->mbxStatus);
mempool_free( pmb, phba->mbox_mem_pool);
return -ERESTART;
}
/*
* The value of rr must be 1 since the driver set the cv field to 1.
* This setting requires the FW to set all revision fields.
*/
if (mb->un.varRdRev.rr == 0) {
vp->rev.rBit = 0;
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0440 Adapter failed to init, READ_REV has "
"missing revision information.\n");
mempool_free(pmb, phba->mbox_mem_pool);
return -ERESTART;
}
if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
mempool_free(pmb, phba->mbox_mem_pool);
return -EINVAL;
}
/* Save information as VPD data */
vp->rev.rBit = 1;
memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
vp->rev.biuRev = mb->un.varRdRev.biuRev;
vp->rev.smRev = mb->un.varRdRev.smRev;
vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
vp->rev.endecRev = mb->un.varRdRev.endecRev;
vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
/* If the sli feature level is less then 9, we must
* tear down all RPIs and VPIs on link down if NPIV
* is enabled.
*/
if (vp->rev.feaLevelHigh < 9)
phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
if (lpfc_is_LC_HBA(phba->pcidev->device))
memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
sizeof (phba->RandomData));
/* Get adapter VPD information */
lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
if (!lpfc_vpd_data)
goto out_free_mbox;
do {
lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
if (rc != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
"0441 VPD not present on adapter, "
"mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
mb->mbxCommand, mb->mbxStatus);
mb->un.varDmp.word_cnt = 0;
}
/* dump mem may return a zero when finished or we got a
* mailbox error, either way we are done.
*/
if (mb->un.varDmp.word_cnt == 0)
break;
if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)
mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;
lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
lpfc_vpd_data + offset,
mb->un.varDmp.word_cnt);
offset += mb->un.varDmp.word_cnt;
} while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE);
lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
kfree(lpfc_vpd_data);
out_free_mbox:
mempool_free(pmb, phba->mbox_mem_pool);
return 0;
}
/**
* lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
* @phba: pointer to lpfc hba data structure.
* @pmboxq: pointer to the driver internal queue element for mailbox command.
*
* This is the completion handler for driver's configuring asynchronous event
* mailbox command to the device. If the mailbox command returns successfully,
* it will set internal async event support flag to 1; otherwise, it will
* set internal async event support flag to 0.
**/
static void
lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
{
if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
phba->temp_sensor_support = 1;
else
phba->temp_sensor_support = 0;
mempool_free(pmboxq, phba->mbox_mem_pool);
return;
}
/**
* lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
* @phba: pointer to lpfc hba data structure.
* @pmboxq: pointer to the driver internal queue element for mailbox command.
*
* This is the completion handler for dump mailbox command for getting
* wake up parameters. When this command complete, the response contain
* Option rom version of the HBA. This function translate the version number
* into a human readable string and store it in OptionROMVersion.
**/
static void
lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
{
struct prog_id *prg;
uint32_t prog_id_word;
char dist = ' ';
/* character array used for decoding dist type. */
char dist_char[] = "nabx";
if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
mempool_free(pmboxq, phba->mbox_mem_pool);
return;
}
prg = (struct prog_id *) &prog_id_word;
/* word 7 contain option rom version */
prog_id_word = pmboxq->u.mb.un.varWords[7];
/* Decode the Option rom version word to a readable string */
if (prg->dist < 4)
dist = dist_char[prg->dist];
if ((prg->dist == 3) && (prg->num == 0))
sprintf(phba->OptionROMVersion, "%d.%d%d",
prg->ver, prg->rev, prg->lev);
else
sprintf(phba->OptionROMVersion, "%d.%d%d%c%d",
prg->ver, prg->rev, prg->lev,
dist, prg->num);
mempool_free(pmboxq, phba->mbox_mem_pool);
return;
}
/**
* lpfc_config_port_post - Perform lpfc initialization after config port
* @phba: pointer to lpfc hba data structure.
*
* This routine will do LPFC initialization after the CONFIG_PORT mailbox
* command call. It performs all internal resource and state setups on the
* port: post IOCB buffers, enable appropriate host interrupt attentions,
* ELS ring timers, etc.
*
* Return codes
* 0 - success.
* Any other value - error.
**/
int
lpfc_config_port_post(struct lpfc_hba *phba)
{
struct lpfc_vport *vport = phba->pport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
LPFC_MBOXQ_t *pmb;
MAILBOX_t *mb;
struct lpfc_dmabuf *mp;
struct lpfc_sli *psli = &phba->sli;
uint32_t status, timeout;
int i, j;
int rc;
spin_lock_irq(&phba->hbalock);
/*
* If the Config port completed correctly the HBA is not
* over heated any more.
*/
if (phba->over_temp_state == HBA_OVER_TEMP)
phba->over_temp_state = HBA_NORMAL_TEMP;
spin_unlock_irq(&phba->hbalock);
pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmb) {
phba->link_state = LPFC_HBA_ERROR;
return -ENOMEM;
}
mb = &pmb->u.mb;
/* Get login parameters for NID. */
lpfc_read_sparam(phba, pmb, 0);
pmb->vport = vport;
if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0448 Adapter failed init, mbxCmd x%x "
"READ_SPARM mbxStatus x%x\n",
mb->mbxCommand, mb->mbxStatus);
phba->link_state = LPFC_HBA_ERROR;
mp = (struct lpfc_dmabuf *) pmb->context1;
mempool_free( pmb, phba->mbox_mem_pool);
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
return -EIO;
}
mp = (struct lpfc_dmabuf *) pmb->context1;
memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
pmb->context1 = NULL;
if (phba->cfg_soft_wwnn)
u64_to_wwn(phba->cfg_soft_wwnn,
vport->fc_sparam.nodeName.u.wwn);
if (phba->cfg_soft_wwpn)
u64_to_wwn(phba->cfg_soft_wwpn,
vport->fc_sparam.portName.u.wwn);
memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
sizeof (struct lpfc_name));
memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
sizeof (struct lpfc_name));
/* Update the fc_host data structures with new wwn. */
fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
fc_host_max_npiv_vports(shost) = phba->max_vpi;
/* If no serial number in VPD data, use low 6 bytes of WWNN */
/* This should be consolidated into parse_vpd ? - mr */
if (phba->SerialNumber[0] == 0) {
uint8_t *outptr;
outptr = &vport->fc_nodename.u.s.IEEE[0];
for (i = 0; i < 12; i++) {
status = *outptr++;
j = ((status & 0xf0) >> 4);
if (j <= 9)
phba->SerialNumber[i] =
(char)((uint8_t) 0x30 + (uint8_t) j);
else
phba->SerialNumber[i] =
(char)((uint8_t) 0x61 + (uint8_t) (j - 10));
i++;
j = (status & 0xf);
if (j <= 9)
phba->SerialNumber[i] =
(char)((uint8_t) 0x30 + (uint8_t) j);
else
phba->SerialNumber[i] =
(char)((uint8_t) 0x61 + (uint8_t) (j - 10));
}
}
lpfc_read_config(phba, pmb);
pmb->vport = vport;
if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0453 Adapter failed to init, mbxCmd x%x "
"READ_CONFIG, mbxStatus x%x\n",
mb->mbxCommand, mb->mbxStatus);
phba->link_state = LPFC_HBA_ERROR;
mempool_free( pmb, phba->mbox_mem_pool);
return -EIO;
}
/* Check if the port is disabled */
lpfc_sli_read_link_ste(phba);
/* Reset the DFT_HBA_Q_DEPTH to the max xri */
if (phba->cfg_hba_queue_depth > (mb->un.varRdConfig.max_xri+1))
phba->cfg_hba_queue_depth =
(mb->un.varRdConfig.max_xri + 1) -
lpfc_sli4_get_els_iocb_cnt(phba);
phba->lmt = mb->un.varRdConfig.lmt;
/* Get the default values for Model Name and Description */
lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
if ((phba->cfg_link_speed > LINK_SPEED_10G)
|| ((phba->cfg_link_speed == LINK_SPEED_1G)
&& !(phba->lmt & LMT_1Gb))
|| ((phba->cfg_link_speed == LINK_SPEED_2G)
&& !(phba->lmt & LMT_2Gb))
|| ((phba->cfg_link_speed == LINK_SPEED_4G)
&& !(phba->lmt & LMT_4Gb))
|| ((phba->cfg_link_speed == LINK_SPEED_8G)
&& !(phba->lmt & LMT_8Gb))
|| ((phba->cfg_link_speed == LINK_SPEED_10G)
&& !(phba->lmt & LMT_10Gb))) {
/* Reset link speed to auto */
lpfc_printf_log(phba, KERN_WARNING, LOG_LINK_EVENT,
"1302 Invalid speed for this board: "
"Reset link speed to auto: x%x\n",
phba->cfg_link_speed);
phba->cfg_link_speed = LINK_SPEED_AUTO;
}
phba->link_state = LPFC_LINK_DOWN;
/* Only process IOCBs on ELS ring till hba_state is READY */
if (psli->ring[psli->extra_ring].cmdringaddr)
psli->ring[psli->extra_ring].flag |= LPFC_STOP_IOCB_EVENT;
if (psli->ring[psli->fcp_ring].cmdringaddr)
psli->ring[psli->fcp_ring].flag |= LPFC_STOP_IOCB_EVENT;
if (psli->ring[psli->next_ring].cmdringaddr)
psli->ring[psli->next_ring].flag |= LPFC_STOP_IOCB_EVENT;
/* Post receive buffers for desired rings */
if (phba->sli_rev != 3)
lpfc_post_rcv_buf(phba);
/*
* Configure HBA MSI-X attention conditions to messages if MSI-X mode
*/
if (phba->intr_type == MSIX) {
rc = lpfc_config_msi(phba, pmb);
if (rc) {
mempool_free(pmb, phba->mbox_mem_pool);
return -EIO;
}
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
if (rc != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
"0352 Config MSI mailbox command "
"failed, mbxCmd x%x, mbxStatus x%x\n",
pmb->u.mb.mbxCommand,
pmb->u.mb.mbxStatus);
mempool_free(pmb, phba->mbox_mem_pool);
return -EIO;
}
}
spin_lock_irq(&phba->hbalock);
/* Initialize ERATT handling flag */
phba->hba_flag &= ~HBA_ERATT_HANDLED;
/* Enable appropriate host interrupts */
status = readl(phba->HCregaddr);
status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
if (psli->num_rings > 0)
status |= HC_R0INT_ENA;
if (psli->num_rings > 1)
status |= HC_R1INT_ENA;
if (psli->num_rings > 2)
status |= HC_R2INT_ENA;
if (psli->num_rings > 3)
status |= HC_R3INT_ENA;
if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
(phba->cfg_poll & DISABLE_FCP_RING_INT))
status &= ~(HC_R0INT_ENA);
writel(status, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
spin_unlock_irq(&phba->hbalock);
/* Set up ring-0 (ELS) timer */
timeout = phba->fc_ratov * 2;
mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
/* Set up heart beat (HB) timer */
mod_timer(&phba->hb_tmofunc, jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
phba->hb_outstanding = 0;
phba->last_completion_time = jiffies;
/* Set up error attention (ERATT) polling timer */
mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL);
if (phba->hba_flag & LINK_DISABLED) {
lpfc_printf_log(phba,
KERN_ERR, LOG_INIT,
"2598 Adapter Link is disabled.\n");
lpfc_down_link(phba, pmb);
pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
lpfc_printf_log(phba,
KERN_ERR, LOG_INIT,
"2599 Adapter failed to issue DOWN_LINK"
" mbox command rc 0x%x\n", rc);
mempool_free(pmb, phba->mbox_mem_pool);
return -EIO;
}
} else {
lpfc_init_link(phba, pmb, phba->cfg_topology,
phba->cfg_link_speed);
pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
lpfc_set_loopback_flag(phba);
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
if (rc != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0454 Adapter failed to init, mbxCmd x%x "
"INIT_LINK, mbxStatus x%x\n",
mb->mbxCommand, mb->mbxStatus);
/* Clear all interrupt enable conditions */
writel(0, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
/* Clear all pending interrupts */
writel(0xffffffff, phba->HAregaddr);
readl(phba->HAregaddr); /* flush */
phba->link_state = LPFC_HBA_ERROR;
if (rc != MBX_BUSY)
mempool_free(pmb, phba->mbox_mem_pool);
return -EIO;
}
}
/* MBOX buffer will be freed in mbox compl */
pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
lpfc_config_async(phba, pmb, LPFC_ELS_RING);
pmb->mbox_cmpl = lpfc_config_async_cmpl;
pmb->vport = phba->pport;
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
lpfc_printf_log(phba,
KERN_ERR,
LOG_INIT,
"0456 Adapter failed to issue "
"ASYNCEVT_ENABLE mbox status x%x\n",
rc);
mempool_free(pmb, phba->mbox_mem_pool);
}
/* Get Option rom version */
pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
lpfc_dump_wakeup_param(phba, pmb);
pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
pmb->vport = phba->pport;
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0435 Adapter failed "
"to get Option ROM version status x%x\n", rc);
mempool_free(pmb, phba->mbox_mem_pool);
}
return 0;
}
/**
* lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
* @phba: pointer to lpfc HBA data structure.
*
* This routine will do LPFC uninitialization before the HBA is reset when
* bringing down the SLI Layer.
*
* Return codes
* 0 - success.
* Any other value - error.
**/
int
lpfc_hba_down_prep(struct lpfc_hba *phba)
{
struct lpfc_vport **vports;
int i;
if (phba->sli_rev <= LPFC_SLI_REV3) {
/* Disable interrupts */
writel(0, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
}
if (phba->pport->load_flag & FC_UNLOADING)
lpfc_cleanup_discovery_resources(phba->pport);
else {
vports = lpfc_create_vport_work_array(phba);
if (vports != NULL)
for (i = 0; i <= phba->max_vports &&
vports[i] != NULL; i++)
lpfc_cleanup_discovery_resources(vports[i]);
lpfc_destroy_vport_work_array(phba, vports);
}
return 0;
}
/**
* lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
* @phba: pointer to lpfc HBA data structure.
*
* This routine will do uninitialization after the HBA is reset when bring
* down the SLI Layer.
*
* Return codes
* 0 - sucess.
* Any other value - error.
**/
static int
lpfc_hba_down_post_s3(struct lpfc_hba *phba)
{
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring;
struct lpfc_dmabuf *mp, *next_mp;
LIST_HEAD(completions);
int i;
if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
lpfc_sli_hbqbuf_free_all(phba);
else {
/* Cleanup preposted buffers on the ELS ring */
pring = &psli->ring[LPFC_ELS_RING];
list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
list_del(&mp->list);
pring->postbufq_cnt--;
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
}
}
spin_lock_irq(&phba->hbalock);
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
/* At this point in time the HBA is either reset or DOA. Either
* way, nothing should be on txcmplq as it will NEVER complete.
*/
list_splice_init(&pring->txcmplq, &completions);
pring->txcmplq_cnt = 0;
spin_unlock_irq(&phba->hbalock);
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
IOERR_SLI_ABORTED);
lpfc_sli_abort_iocb_ring(phba, pring);
spin_lock_irq(&phba->hbalock);
}
spin_unlock_irq(&phba->hbalock);
return 0;
}
/**
* lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
* @phba: pointer to lpfc HBA data structure.
*
* This routine will do uninitialization after the HBA is reset when bring
* down the SLI Layer.
*
* Return codes
* 0 - sucess.
* Any other value - error.
**/
static int
lpfc_hba_down_post_s4(struct lpfc_hba *phba)
{
struct lpfc_scsi_buf *psb, *psb_next;
LIST_HEAD(aborts);
int ret;
unsigned long iflag = 0;
ret = lpfc_hba_down_post_s3(phba);
if (ret)
return ret;
/* At this point in time the HBA is either reset or DOA. Either
* way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
* on the lpfc_sgl_list so that it can either be freed if the
* driver is unloading or reposted if the driver is restarting
* the port.
*/
spin_lock_irq(&phba->hbalock); /* required for lpfc_sgl_list and */
/* scsl_buf_list */
/* abts_sgl_list_lock required because worker thread uses this
* list.
*/
spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
&phba->sli4_hba.lpfc_sgl_list);
spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
/* abts_scsi_buf_list_lock required because worker thread uses this
* list.
*/
spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
list_splice_init(&phba->sli4_hba.lpfc_abts_scsi_buf_list,
&aborts);
spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
spin_unlock_irq(&phba->hbalock);
list_for_each_entry_safe(psb, psb_next, &aborts, list) {
psb->pCmd = NULL;
psb->status = IOSTAT_SUCCESS;
}
spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
list_splice(&aborts, &phba->lpfc_scsi_buf_list);
spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
return 0;
}
/**
* lpfc_hba_down_post - Wrapper func for hba down post routine
* @phba: pointer to lpfc HBA data structure.
*
* This routine wraps the actual SLI3 or SLI4 routine for performing
* uninitialization after the HBA is reset when bring down the SLI Layer.
*
* Return codes
* 0 - sucess.
* Any other value - error.
**/
int
lpfc_hba_down_post(struct lpfc_hba *phba)
{
return (*phba->lpfc_hba_down_post)(phba);
}
/**
* lpfc_hb_timeout - The HBA-timer timeout handler
* @ptr: unsigned long holds the pointer to lpfc hba data structure.
*
* This is the HBA-timer timeout handler registered to the lpfc driver. When
* this timer fires, a HBA timeout event shall be posted to the lpfc driver
* work-port-events bitmap and the worker thread is notified. This timeout
* event will be used by the worker thread to invoke the actual timeout
* handler routine, lpfc_hb_timeout_handler. Any periodical operations will
* be performed in the timeout handler and the HBA timeout event bit shall
* be cleared by the worker thread after it has taken the event bitmap out.
**/
static void
lpfc_hb_timeout(unsigned long ptr)
{
struct lpfc_hba *phba;
uint32_t tmo_posted;
unsigned long iflag;
phba = (struct lpfc_hba *)ptr;
/* Check for heart beat timeout conditions */
spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
if (!tmo_posted)
phba->pport->work_port_events |= WORKER_HB_TMO;
spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
/* Tell the worker thread there is work to do */
if (!tmo_posted)
lpfc_worker_wake_up(phba);
return;
}
/**
* lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
* @phba: pointer to lpfc hba data structure.
* @pmboxq: pointer to the driver internal queue element for mailbox command.
*
* This is the callback function to the lpfc heart-beat mailbox command.
* If configured, the lpfc driver issues the heart-beat mailbox command to
* the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
* heart-beat mailbox command is issued, the driver shall set up heart-beat
* timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
* heart-beat outstanding state. Once the mailbox command comes back and
* no error conditions detected, the heart-beat mailbox command timer is
* reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
* state is cleared for the next heart-beat. If the timer expired with the
* heart-beat outstanding state set, the driver will put the HBA offline.
**/
static void
lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
{
unsigned long drvr_flag;
spin_lock_irqsave(&phba->hbalock, drvr_flag);
phba->hb_outstanding = 0;
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
/* Check and reset heart-beat timer is necessary */
mempool_free(pmboxq, phba->mbox_mem_pool);
if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
!(phba->link_state == LPFC_HBA_ERROR) &&
!(phba->pport->load_flag & FC_UNLOADING))
mod_timer(&phba->hb_tmofunc,
jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
return;
}
/**
* lpfc_hb_timeout_handler - The HBA-timer timeout handler
* @phba: pointer to lpfc hba data structure.
*
* This is the actual HBA-timer timeout handler to be invoked by the worker
* thread whenever the HBA timer fired and HBA-timeout event posted. This
* handler performs any periodic operations needed for the device. If such
* periodic event has already been attended to either in the interrupt handler
* or by processing slow-ring or fast-ring events within the HBA-timer
* timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
* the timer for the next timeout period. If lpfc heart-beat mailbox command
* is configured and there is no heart-beat mailbox command outstanding, a
* heart-beat mailbox is issued and timer set properly. Otherwise, if there
* has been a heart-beat mailbox command outstanding, the HBA shall be put
* to offline.
**/
void
lpfc_hb_timeout_handler(struct lpfc_hba *phba)
{
LPFC_MBOXQ_t *pmboxq;
struct lpfc_dmabuf *buf_ptr;
int retval;
struct lpfc_sli *psli = &phba->sli;
LIST_HEAD(completions);
if ((phba->link_state == LPFC_HBA_ERROR) ||
(phba->pport->load_flag & FC_UNLOADING) ||
(phba->pport->fc_flag & FC_OFFLINE_MODE))
return;
spin_lock_irq(&phba->pport->work_port_lock);
if (time_after(phba->last_completion_time + LPFC_HB_MBOX_INTERVAL * HZ,
jiffies)) {
spin_unlock_irq(&phba->pport->work_port_lock);
if (!phba->hb_outstanding)
mod_timer(&phba->hb_tmofunc,
jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
else
mod_timer(&phba->hb_tmofunc,
jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
return;
}
spin_unlock_irq(&phba->pport->work_port_lock);
if (phba->elsbuf_cnt &&
(phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
spin_lock_irq(&phba->hbalock);
list_splice_init(&phba->elsbuf, &completions);
phba->elsbuf_cnt = 0;
phba->elsbuf_prev_cnt = 0;
spin_unlock_irq(&phba->hbalock);
while (!list_empty(&completions)) {
list_remove_head(&completions, buf_ptr,
struct lpfc_dmabuf, list);
lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
kfree(buf_ptr);
}
}
phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
/* If there is no heart beat outstanding, issue a heartbeat command */
if (phba->cfg_enable_hba_heartbeat) {
if (!phba->hb_outstanding) {
pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
if (!pmboxq) {
mod_timer(&phba->hb_tmofunc,
jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
return;
}
lpfc_heart_beat(phba, pmboxq);
pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
pmboxq->vport = phba->pport;
retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
if (retval != MBX_BUSY && retval != MBX_SUCCESS) {
mempool_free(pmboxq, phba->mbox_mem_pool);
mod_timer(&phba->hb_tmofunc,
jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
return;
}
mod_timer(&phba->hb_tmofunc,
jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
phba->hb_outstanding = 1;
return;
} else {
/*
* If heart beat timeout called with hb_outstanding set
* we need to take the HBA offline.
*/
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0459 Adapter heartbeat failure, "
"taking this port offline.\n");
spin_lock_irq(&phba->hbalock);
psli->sli_flag &= ~LPFC_SLI_ACTIVE;
spin_unlock_irq(&phba->hbalock);
lpfc_offline_prep(phba);
lpfc_offline(phba);
lpfc_unblock_mgmt_io(phba);
phba->link_state = LPFC_HBA_ERROR;
lpfc_hba_down_post(phba);
}
}
}
/**
* lpfc_offline_eratt - Bring lpfc offline on hardware error attention
* @phba: pointer to lpfc hba data structure.
*
* This routine is called to bring the HBA offline when HBA hardware error
* other than Port Error 6 has been detected.
**/
static void
lpfc_offline_eratt(struct lpfc_hba *phba)
{
struct lpfc_sli *psli = &phba->sli;
spin_lock_irq(&phba->hbalock);
psli->sli_flag &= ~LPFC_SLI_ACTIVE;
spin_unlock_irq(&phba->hbalock);
lpfc_offline_prep(phba);
lpfc_offline(phba);
lpfc_reset_barrier(phba);
spin_lock_irq(&phba->hbalock);
lpfc_sli_brdreset(phba);
spin_unlock_irq(&phba->hbalock);
lpfc_hba_down_post(phba);
lpfc_sli_brdready(phba, HS_MBRDY);
lpfc_unblock_mgmt_io(phba);
phba->link_state = LPFC_HBA_ERROR;
return;
}
/**
* lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
* @phba: pointer to lpfc hba data structure.
*
* This routine is called to bring a SLI4 HBA offline when HBA hardware error
* other than Port Error 6 has been detected.
**/
static void
lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
{
lpfc_offline_prep(phba);
lpfc_offline(phba);
lpfc_sli4_brdreset(phba);
lpfc_hba_down_post(phba);
lpfc_sli4_post_status_check(phba);
lpfc_unblock_mgmt_io(phba);
phba->link_state = LPFC_HBA_ERROR;
}
/**
* lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
* @phba: pointer to lpfc hba data structure.
*
* This routine is invoked to handle the deferred HBA hardware error
* conditions. This type of error is indicated by HBA by setting ER1
* and another ER bit in the host status register. The driver will
* wait until the ER1 bit clears before handling the error condition.