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review.evervolv.com / android_kernel_oneplus_msm8996 / 783eaf4671a4f5a95102aedb5a45e1f8adab945c / . / drivers / scsi / lpfc / lpfc_hbadisc.c
blob: b2f1552f1848a988d75dea9cf2fcbf5b5a24193d [file] [log] [blame]
/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2004-2006 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/pci.h>
#include <linux/kthread.h>
#include <linux/interrupt.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>
#include "lpfc_hw.h"
#include "lpfc_disc.h"
#include "lpfc_sli.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
/* AlpaArray for assignment of scsid for scan-down and bind_method */
static uint8_t lpfcAlpaArray[] = {
0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6,
0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA,
0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5,
0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9,
0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97,
0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79,
0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B,
0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56,
0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A,
0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35,
0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29,
0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17,
0x10, 0x0F, 0x08, 0x04, 0x02, 0x01
};
static void lpfc_disc_timeout_handler(struct lpfc_hba *);
static void
lpfc_process_nodev_timeout(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
{
uint8_t *name = (uint8_t *)&ndlp->nlp_portname;
int warn_on = 0;
spin_lock_irq(phba->host->host_lock);
if (!(ndlp->nlp_flag & NLP_NODEV_TMO)) {
spin_unlock_irq(phba->host->host_lock);
return;
}
/*
* If a discovery event readded nodev_timer after timer
* firing and before processing the timer, cancel the
* nlp_tmofunc.
*/
spin_unlock_irq(phba->host->host_lock);
del_timer_sync(&ndlp->nlp_tmofunc);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_NODEV_TMO;
if (ndlp->nlp_sid != NLP_NO_SID) {
warn_on = 1;
/* flush the target */
lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
}
spin_unlock_irq(phba->host->host_lock);
if (warn_on) {
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
"%d:0203 Nodev timeout on "
"WWPN %x:%x:%x:%x:%x:%x:%x:%x "
"NPort x%x Data: x%x x%x x%x\n",
phba->brd_no,
*name, *(name+1), *(name+2), *(name+3),
*(name+4), *(name+5), *(name+6), *(name+7),
ndlp->nlp_DID, ndlp->nlp_flag,
ndlp->nlp_state, ndlp->nlp_rpi);
} else {
lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
"%d:0204 Nodev timeout on "
"WWPN %x:%x:%x:%x:%x:%x:%x:%x "
"NPort x%x Data: x%x x%x x%x\n",
phba->brd_no,
*name, *(name+1), *(name+2), *(name+3),
*(name+4), *(name+5), *(name+6), *(name+7),
ndlp->nlp_DID, ndlp->nlp_flag,
ndlp->nlp_state, ndlp->nlp_rpi);
}
lpfc_disc_state_machine(phba, ndlp, NULL, NLP_EVT_DEVICE_RM);
return;
}
static void
lpfc_work_list_done(struct lpfc_hba * phba)
{
struct lpfc_work_evt *evtp = NULL;
struct lpfc_nodelist *ndlp;
int free_evt;
spin_lock_irq(phba->host->host_lock);
while(!list_empty(&phba->work_list)) {
list_remove_head((&phba->work_list), evtp, typeof(*evtp),
evt_listp);
spin_unlock_irq(phba->host->host_lock);
free_evt = 1;
switch (evtp->evt) {
case LPFC_EVT_NODEV_TMO:
ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
lpfc_process_nodev_timeout(phba, ndlp);
free_evt = 0;
break;
case LPFC_EVT_ELS_RETRY:
ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
lpfc_els_retry_delay_handler(ndlp);
free_evt = 0;
break;
case LPFC_EVT_ONLINE:
if (phba->hba_state < LPFC_LINK_DOWN)
*(int *)(evtp->evt_arg1) = lpfc_online(phba);
else
*(int *)(evtp->evt_arg1) = 0;
complete((struct completion *)(evtp->evt_arg2));
break;
case LPFC_EVT_OFFLINE:
if (phba->hba_state >= LPFC_LINK_DOWN)
lpfc_offline(phba);
lpfc_sli_brdrestart(phba);
*(int *)(evtp->evt_arg1) =
lpfc_sli_brdready(phba,HS_FFRDY | HS_MBRDY);
complete((struct completion *)(evtp->evt_arg2));
break;
case LPFC_EVT_WARM_START:
if (phba->hba_state >= LPFC_LINK_DOWN)
lpfc_offline(phba);
lpfc_reset_barrier(phba);
lpfc_sli_brdreset(phba);
lpfc_hba_down_post(phba);
*(int *)(evtp->evt_arg1) =
lpfc_sli_brdready(phba, HS_MBRDY);
complete((struct completion *)(evtp->evt_arg2));
break;
case LPFC_EVT_KILL:
if (phba->hba_state >= LPFC_LINK_DOWN)
lpfc_offline(phba);
*(int *)(evtp->evt_arg1)
= (phba->stopped) ? 0 : lpfc_sli_brdkill(phba);
complete((struct completion *)(evtp->evt_arg2));
break;
}
if (free_evt)
kfree(evtp);
spin_lock_irq(phba->host->host_lock);
}
spin_unlock_irq(phba->host->host_lock);
}
static void
lpfc_work_done(struct lpfc_hba * phba)
{
struct lpfc_sli_ring *pring;
int i;
uint32_t ha_copy;
uint32_t control;
uint32_t work_hba_events;
spin_lock_irq(phba->host->host_lock);
ha_copy = phba->work_ha;
phba->work_ha = 0;
work_hba_events=phba->work_hba_events;
spin_unlock_irq(phba->host->host_lock);
if (ha_copy & HA_ERATT)
lpfc_handle_eratt(phba);
if (ha_copy & HA_MBATT)
lpfc_sli_handle_mb_event(phba);
if (ha_copy & HA_LATT)
lpfc_handle_latt(phba);
if (work_hba_events & WORKER_DISC_TMO)
lpfc_disc_timeout_handler(phba);
if (work_hba_events & WORKER_ELS_TMO)
lpfc_els_timeout_handler(phba);
if (work_hba_events & WORKER_MBOX_TMO)
lpfc_mbox_timeout_handler(phba);
if (work_hba_events & WORKER_FDMI_TMO)
lpfc_fdmi_tmo_handler(phba);
spin_lock_irq(phba->host->host_lock);
phba->work_hba_events &= ~work_hba_events;
spin_unlock_irq(phba->host->host_lock);
for (i = 0; i < phba->sli.num_rings; i++, ha_copy >>= 4) {
pring = &phba->sli.ring[i];
if ((ha_copy & HA_RXATT)
|| (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
if (pring->flag & LPFC_STOP_IOCB_MASK) {
pring->flag |= LPFC_DEFERRED_RING_EVENT;
} else {
lpfc_sli_handle_slow_ring_event(phba, pring,
(ha_copy &
HA_RXMASK));
pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
}
/*
* Turn on Ring interrupts
*/
spin_lock_irq(phba->host->host_lock);
control = readl(phba->HCregaddr);
control |= (HC_R0INT_ENA << i);
writel(control, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
spin_unlock_irq(phba->host->host_lock);
}
}
lpfc_work_list_done (phba);
}
static int
check_work_wait_done(struct lpfc_hba *phba) {
spin_lock_irq(phba->host->host_lock);
if (phba->work_ha ||
phba->work_hba_events ||
(!list_empty(&phba->work_list)) ||
kthread_should_stop()) {
spin_unlock_irq(phba->host->host_lock);
return 1;
} else {
spin_unlock_irq(phba->host->host_lock);
return 0;
}
}
int
lpfc_do_work(void *p)
{
struct lpfc_hba *phba = p;
int rc;
DECLARE_WAIT_QUEUE_HEAD(work_waitq);
set_user_nice(current, -20);
phba->work_wait = &work_waitq;
while (1) {
rc = wait_event_interruptible(work_waitq,
check_work_wait_done(phba));
BUG_ON(rc);
if (kthread_should_stop())
break;
lpfc_work_done(phba);
}
phba->work_wait = NULL;
return 0;
}
/*
* This is only called to handle FC worker events. Since this a rare
* occurance, we allocate a struct lpfc_work_evt structure here instead of
* embedding it in the IOCB.
*/
int
lpfc_workq_post_event(struct lpfc_hba * phba, void *arg1, void *arg2,
uint32_t evt)
{
struct lpfc_work_evt *evtp;
/*
* All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will
* be queued to worker thread for processing
*/
evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_KERNEL);
if (!evtp)
return 0;
evtp->evt_arg1 = arg1;
evtp->evt_arg2 = arg2;
evtp->evt = evt;
spin_lock_irq(phba->host->host_lock);
list_add_tail(&evtp->evt_listp, &phba->work_list);
if (phba->work_wait)
wake_up(phba->work_wait);
spin_unlock_irq(phba->host->host_lock);
return 1;
}
int
lpfc_linkdown(struct lpfc_hba * phba)
{
struct lpfc_sli *psli;
struct lpfc_nodelist *ndlp, *next_ndlp;
struct list_head *listp, *node_list[7];
LPFC_MBOXQ_t *mb;
int rc, i;
psli = &phba->sli;
/* sysfs or selective reset may call this routine to clean up */
if (phba->hba_state >= LPFC_LINK_DOWN) {
if (phba->hba_state == LPFC_LINK_DOWN)
return 0;
spin_lock_irq(phba->host->host_lock);
phba->hba_state = LPFC_LINK_DOWN;
spin_unlock_irq(phba->host->host_lock);
}
/* Clean up any firmware default rpi's */
if ((mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))) {
lpfc_unreg_did(phba, 0xffffffff, mb);
mb->mbox_cmpl=lpfc_sli_def_mbox_cmpl;
if (lpfc_sli_issue_mbox(phba, mb, (MBX_NOWAIT | MBX_STOP_IOCB))
== MBX_NOT_FINISHED) {
mempool_free( mb, phba->mbox_mem_pool);
}
}
/* Cleanup any outstanding RSCN activity */
lpfc_els_flush_rscn(phba);
/* Cleanup any outstanding ELS commands */
lpfc_els_flush_cmd(phba);
/* Issue a LINK DOWN event to all nodes */
node_list[0] = &phba->fc_npr_list; /* MUST do this list first */
node_list[1] = &phba->fc_nlpmap_list;
node_list[2] = &phba->fc_nlpunmap_list;
node_list[3] = &phba->fc_prli_list;
node_list[4] = &phba->fc_reglogin_list;
node_list[5] = &phba->fc_adisc_list;
node_list[6] = &phba->fc_plogi_list;
for (i = 0; i < 7; i++) {
listp = node_list[i];
if (list_empty(listp))
continue;
list_for_each_entry_safe(ndlp, next_ndlp, listp, nlp_listp) {
rc = lpfc_disc_state_machine(phba, ndlp, NULL,
NLP_EVT_DEVICE_RECOVERY);
/* Check config parameter use-adisc or FCP-2 */
if ((rc != NLP_STE_FREED_NODE) &&
(phba->cfg_use_adisc == 0) &&
!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE)) {
/* We know we will have to relogin, so
* unreglogin the rpi right now to fail
* any outstanding I/Os quickly.
*/
lpfc_unreg_rpi(phba, ndlp);
}
}
}
/* free any ndlp's on unused list */
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_unused_list,
nlp_listp) {
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
}
/* Setup myDID for link up if we are in pt2pt mode */
if (phba->fc_flag & FC_PT2PT) {
phba->fc_myDID = 0;
if ((mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))) {
lpfc_config_link(phba, mb);
mb->mbox_cmpl=lpfc_sli_def_mbox_cmpl;
if (lpfc_sli_issue_mbox
(phba, mb, (MBX_NOWAIT | MBX_STOP_IOCB))
== MBX_NOT_FINISHED) {
mempool_free( mb, phba->mbox_mem_pool);
}
}
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
spin_unlock_irq(phba->host->host_lock);
}
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~FC_LBIT;
spin_unlock_irq(phba->host->host_lock);
/* Turn off discovery timer if its running */
lpfc_can_disctmo(phba);
/* Must process IOCBs on all rings to handle ABORTed I/Os */
return 0;
}
static int
lpfc_linkup(struct lpfc_hba * phba)
{
struct lpfc_nodelist *ndlp, *next_ndlp;
struct list_head *listp, *node_list[7];
int i;
spin_lock_irq(phba->host->host_lock);
phba->hba_state = LPFC_LINK_UP;
phba->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
phba->fc_flag |= FC_NDISC_ACTIVE;
phba->fc_ns_retry = 0;
spin_unlock_irq(phba->host->host_lock);
node_list[0] = &phba->fc_plogi_list;
node_list[1] = &phba->fc_adisc_list;
node_list[2] = &phba->fc_reglogin_list;
node_list[3] = &phba->fc_prli_list;
node_list[4] = &phba->fc_nlpunmap_list;
node_list[5] = &phba->fc_nlpmap_list;
node_list[6] = &phba->fc_npr_list;
for (i = 0; i < 7; i++) {
listp = node_list[i];
if (list_empty(listp))
continue;
list_for_each_entry_safe(ndlp, next_ndlp, listp, nlp_listp) {
if (phba->fc_flag & FC_LBIT) {
if (ndlp->nlp_type & NLP_FABRIC) {
/* On Linkup its safe to clean up the
* ndlp from Fabric connections.
*/
lpfc_nlp_list(phba, ndlp,
NLP_UNUSED_LIST);
} else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
/* Fail outstanding IO now since device
* is marked for PLOGI.
*/
lpfc_unreg_rpi(phba, ndlp);
}
}
}
}
/* free any ndlp's on unused list */
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_unused_list,
nlp_listp) {
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
}
return 0;
}
/*
* This routine handles processing a CLEAR_LA mailbox
* command upon completion. It is setup in the LPFC_MBOXQ
* as the completion routine when the command is
* handed off to the SLI layer.
*/
void
lpfc_mbx_cmpl_clear_la(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
struct lpfc_sli *psli;
MAILBOX_t *mb;
uint32_t control;
psli = &phba->sli;
mb = &pmb->mb;
/* Since we don't do discovery right now, turn these off here */
psli->ring[psli->ip_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT;
/* Check for error */
if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) {
/* CLEAR_LA mbox error <mbxStatus> state <hba_state> */
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
"%d:0320 CLEAR_LA mbxStatus error x%x hba "
"state x%x\n",
phba->brd_no, mb->mbxStatus, phba->hba_state);
phba->hba_state = LPFC_HBA_ERROR;
goto out;
}
if (phba->fc_flag & FC_ABORT_DISCOVERY)
goto out;
phba->num_disc_nodes = 0;
/* go thru NPR list and issue ELS PLOGIs */
if (phba->fc_npr_cnt) {
lpfc_els_disc_plogi(phba);
}
if (!phba->num_disc_nodes) {
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~FC_NDISC_ACTIVE;
spin_unlock_irq(phba->host->host_lock);
}
phba->hba_state = LPFC_HBA_READY;
out:
/* Device Discovery completes */
lpfc_printf_log(phba,
KERN_INFO,
LOG_DISCOVERY,
"%d:0225 Device Discovery completes\n",
phba->brd_no);
mempool_free( pmb, phba->mbox_mem_pool);
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~FC_ABORT_DISCOVERY;
if (phba->fc_flag & FC_ESTABLISH_LINK) {
phba->fc_flag &= ~FC_ESTABLISH_LINK;
}
spin_unlock_irq(phba->host->host_lock);
del_timer_sync(&phba->fc_estabtmo);
lpfc_can_disctmo(phba);
/* turn on Link Attention interrupts */
spin_lock_irq(phba->host->host_lock);
psli->sli_flag |= LPFC_PROCESS_LA;
control = readl(phba->HCregaddr);
control |= HC_LAINT_ENA;
writel(control, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
spin_unlock_irq(phba->host->host_lock);
return;
}
static void
lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
struct lpfc_sli *psli = &phba->sli;
int rc;
if (pmb->mb.mbxStatus)
goto out;
mempool_free(pmb, phba->mbox_mem_pool);
if (phba->fc_topology == TOPOLOGY_LOOP &&
phba->fc_flag & FC_PUBLIC_LOOP &&
!(phba->fc_flag & FC_LBIT)) {
/* Need to wait for FAN - use discovery timer
* for timeout. hba_state is identically
* LPFC_LOCAL_CFG_LINK while waiting for FAN
*/
lpfc_set_disctmo(phba);
return;
}
/* Start discovery by sending a FLOGI. hba_state is identically
* LPFC_FLOGI while waiting for FLOGI cmpl
*/
phba->hba_state = LPFC_FLOGI;
lpfc_set_disctmo(phba);
lpfc_initial_flogi(phba);
return;
out:
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
"%d:0306 CONFIG_LINK mbxStatus error x%x "
"HBA state x%x\n",
phba->brd_no, pmb->mb.mbxStatus, phba->hba_state);
lpfc_linkdown(phba);
phba->hba_state = LPFC_HBA_ERROR;
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
"%d:0200 CONFIG_LINK bad hba state x%x\n",
phba->brd_no, phba->hba_state);
lpfc_clear_la(phba, pmb);
pmb->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
rc = lpfc_sli_issue_mbox(phba, pmb, (MBX_NOWAIT | MBX_STOP_IOCB));
if (rc == MBX_NOT_FINISHED) {
mempool_free(pmb, phba->mbox_mem_pool);
lpfc_disc_flush_list(phba);
psli->ring[(psli->ip_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
phba->hba_state = LPFC_HBA_READY;
}
return;
}
static void
lpfc_mbx_cmpl_read_sparam(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
struct lpfc_sli *psli = &phba->sli;
MAILBOX_t *mb = &pmb->mb;
struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
/* Check for error */
if (mb->mbxStatus) {
/* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
"%d:0319 READ_SPARAM mbxStatus error x%x "
"hba state x%x>\n",
phba->brd_no, mb->mbxStatus, phba->hba_state);
lpfc_linkdown(phba);
phba->hba_state = LPFC_HBA_ERROR;
goto out;
}
memcpy((uint8_t *) & phba->fc_sparam, (uint8_t *) mp->virt,
sizeof (struct serv_parm));
memcpy((uint8_t *) & phba->fc_nodename,
(uint8_t *) & phba->fc_sparam.nodeName,
sizeof (struct lpfc_name));
memcpy((uint8_t *) & phba->fc_portname,
(uint8_t *) & phba->fc_sparam.portName,
sizeof (struct lpfc_name));
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free( pmb, phba->mbox_mem_pool);
return;
out:
pmb->context1 = NULL;
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
if (phba->hba_state != LPFC_CLEAR_LA) {
lpfc_clear_la(phba, pmb);
pmb->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
if (lpfc_sli_issue_mbox(phba, pmb, (MBX_NOWAIT | MBX_STOP_IOCB))
== MBX_NOT_FINISHED) {
mempool_free( pmb, phba->mbox_mem_pool);
lpfc_disc_flush_list(phba);
psli->ring[(psli->ip_ring)].flag &=
~LPFC_STOP_IOCB_EVENT;
psli->ring[(psli->fcp_ring)].flag &=
~LPFC_STOP_IOCB_EVENT;
psli->ring[(psli->next_ring)].flag &=
~LPFC_STOP_IOCB_EVENT;
phba->hba_state = LPFC_HBA_READY;
}
} else {
mempool_free( pmb, phba->mbox_mem_pool);
}
return;
}
static void
lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
{
int i;
LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
spin_lock_irq(phba->host->host_lock);
switch (la->UlnkSpeed) {
case LA_1GHZ_LINK:
phba->fc_linkspeed = LA_1GHZ_LINK;
break;
case LA_2GHZ_LINK:
phba->fc_linkspeed = LA_2GHZ_LINK;
break;
case LA_4GHZ_LINK:
phba->fc_linkspeed = LA_4GHZ_LINK;
break;
default:
phba->fc_linkspeed = LA_UNKNW_LINK;
break;
}
phba->fc_topology = la->topology;
if (phba->fc_topology == TOPOLOGY_LOOP) {
/* Get Loop Map information */
if (la->il)
phba->fc_flag |= FC_LBIT;
phba->fc_myDID = la->granted_AL_PA;
i = la->un.lilpBde64.tus.f.bdeSize;
if (i == 0) {
phba->alpa_map[0] = 0;
} else {
if (phba->cfg_log_verbose & LOG_LINK_EVENT) {
int numalpa, j, k;
union {
uint8_t pamap[16];
struct {
uint32_t wd1;
uint32_t wd2;
uint32_t wd3;
uint32_t wd4;
} pa;
} un;
numalpa = phba->alpa_map[0];
j = 0;
while (j < numalpa) {
memset(un.pamap, 0, 16);
for (k = 1; j < numalpa; k++) {
un.pamap[k - 1] =
phba->alpa_map[j + 1];
j++;
if (k == 16)
break;
}
/* Link Up Event ALPA map */
lpfc_printf_log(phba,
KERN_WARNING,
LOG_LINK_EVENT,
"%d:1304 Link Up Event "
"ALPA map Data: x%x "
"x%x x%x x%x\n",
phba->brd_no,
un.pa.wd1, un.pa.wd2,
un.pa.wd3, un.pa.wd4);
}
}
}
} else {
phba->fc_myDID = phba->fc_pref_DID;
phba->fc_flag |= FC_LBIT;
}
spin_unlock_irq(phba->host->host_lock);
lpfc_linkup(phba);
if (sparam_mbox) {
lpfc_read_sparam(phba, sparam_mbox);
sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
lpfc_sli_issue_mbox(phba, sparam_mbox,
(MBX_NOWAIT | MBX_STOP_IOCB));
}
if (cfglink_mbox) {
phba->hba_state = LPFC_LOCAL_CFG_LINK;
lpfc_config_link(phba, cfglink_mbox);
cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
lpfc_sli_issue_mbox(phba, cfglink_mbox,
(MBX_NOWAIT | MBX_STOP_IOCB));
}
}
static void
lpfc_mbx_issue_link_down(struct lpfc_hba *phba) {
uint32_t control;
struct lpfc_sli *psli = &phba->sli;
lpfc_linkdown(phba);
/* turn on Link Attention interrupts - no CLEAR_LA needed */
spin_lock_irq(phba->host->host_lock);
psli->sli_flag |= LPFC_PROCESS_LA;
control = readl(phba->HCregaddr);
control |= HC_LAINT_ENA;
writel(control, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
spin_unlock_irq(phba->host->host_lock);
}
/*
* This routine handles processing a READ_LA mailbox
* command upon completion. It is setup in the LPFC_MBOXQ
* as the completion routine when the command is
* handed off to the SLI layer.
*/
void
lpfc_mbx_cmpl_read_la(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
READ_LA_VAR *la;
MAILBOX_t *mb = &pmb->mb;
struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
/* Check for error */
if (mb->mbxStatus) {
lpfc_printf_log(phba,
KERN_INFO,
LOG_LINK_EVENT,
"%d:1307 READ_LA mbox error x%x state x%x\n",
phba->brd_no,
mb->mbxStatus, phba->hba_state);
lpfc_mbx_issue_link_down(phba);
phba->hba_state = LPFC_HBA_ERROR;
goto lpfc_mbx_cmpl_read_la_free_mbuf;
}
la = (READ_LA_VAR *) & pmb->mb.un.varReadLA;
memcpy(&phba->alpa_map[0], mp->virt, 128);
spin_lock_irq(phba->host->host_lock);
if (la->pb)
phba->fc_flag |= FC_BYPASSED_MODE;
else
phba->fc_flag &= ~FC_BYPASSED_MODE;
spin_unlock_irq(phba->host->host_lock);
if (((phba->fc_eventTag + 1) < la->eventTag) ||
(phba->fc_eventTag == la->eventTag)) {
phba->fc_stat.LinkMultiEvent++;
if (la->attType == AT_LINK_UP) {
if (phba->fc_eventTag != 0)
lpfc_linkdown(phba);
}
}
phba->fc_eventTag = la->eventTag;
if (la->attType == AT_LINK_UP) {
phba->fc_stat.LinkUp++;
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
"%d:1303 Link Up Event x%x received "
"Data: x%x x%x x%x x%x\n",
phba->brd_no, la->eventTag, phba->fc_eventTag,
la->granted_AL_PA, la->UlnkSpeed,
phba->alpa_map[0]);
lpfc_mbx_process_link_up(phba, la);
} else {
phba->fc_stat.LinkDown++;
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
"%d:1305 Link Down Event x%x received "
"Data: x%x x%x x%x\n",
phba->brd_no, la->eventTag, phba->fc_eventTag,
phba->hba_state, phba->fc_flag);
lpfc_mbx_issue_link_down(phba);
}
lpfc_mbx_cmpl_read_la_free_mbuf:
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free(pmb, phba->mbox_mem_pool);
return;
}
/*
* This routine handles processing a REG_LOGIN mailbox
* command upon completion. It is setup in the LPFC_MBOXQ
* as the completion routine when the command is
* handed off to the SLI layer.
*/
void
lpfc_mbx_cmpl_reg_login(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
struct lpfc_sli *psli;
MAILBOX_t *mb;
struct lpfc_dmabuf *mp;
struct lpfc_nodelist *ndlp;
psli = &phba->sli;
mb = &pmb->mb;
ndlp = (struct lpfc_nodelist *) pmb->context2;
mp = (struct lpfc_dmabuf *) (pmb->context1);
pmb->context1 = NULL;
/* Good status, call state machine */
lpfc_disc_state_machine(phba, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free( pmb, phba->mbox_mem_pool);
return;
}
/*
* This routine handles processing a Fabric REG_LOGIN mailbox
* command upon completion. It is setup in the LPFC_MBOXQ
* as the completion routine when the command is
* handed off to the SLI layer.
*/
void
lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
struct lpfc_sli *psli;
MAILBOX_t *mb;
struct lpfc_dmabuf *mp;
struct lpfc_nodelist *ndlp;
struct lpfc_nodelist *ndlp_fdmi;
psli = &phba->sli;
mb = &pmb->mb;
ndlp = (struct lpfc_nodelist *) pmb->context2;
mp = (struct lpfc_dmabuf *) (pmb->context1);
if (mb->mbxStatus) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free( pmb, phba->mbox_mem_pool);
mempool_free( ndlp, phba->nlp_mem_pool);
/* FLOGI failed, so just use loop map to make discovery list */
lpfc_disc_list_loopmap(phba);
/* Start discovery */
lpfc_disc_start(phba);
return;
}
pmb->context1 = NULL;
ndlp->nlp_rpi = mb->un.varWords[0];
ndlp->nlp_type |= NLP_FABRIC;
ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
if (phba->hba_state == LPFC_FABRIC_CFG_LINK) {
/* This NPort has been assigned an NPort_ID by the fabric as a
* result of the completed fabric login. Issue a State Change
* Registration (SCR) ELS request to the fabric controller
* (SCR_DID) so that this NPort gets RSCN events from the
* fabric.
*/
lpfc_issue_els_scr(phba, SCR_DID, 0);
ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, NameServer_DID);
if (!ndlp) {
/* Allocate a new node instance. If the pool is empty,
* start the discovery process and skip the Nameserver
* login process. This is attempted again later on.
* Otherwise, issue a Port Login (PLOGI) to NameServer.
*/
ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
if (!ndlp) {
lpfc_disc_start(phba);
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free( pmb, phba->mbox_mem_pool);
return;
} else {
lpfc_nlp_init(phba, ndlp, NameServer_DID);
ndlp->nlp_type |= NLP_FABRIC;
}
}
ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
lpfc_issue_els_plogi(phba, NameServer_DID, 0);
if (phba->cfg_fdmi_on) {
ndlp_fdmi = mempool_alloc(phba->nlp_mem_pool,
GFP_KERNEL);
if (ndlp_fdmi) {
lpfc_nlp_init(phba, ndlp_fdmi, FDMI_DID);
ndlp_fdmi->nlp_type |= NLP_FABRIC;
ndlp_fdmi->nlp_state = NLP_STE_PLOGI_ISSUE;
lpfc_issue_els_plogi(phba, FDMI_DID, 0);
}
}
}
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free( pmb, phba->mbox_mem_pool);
return;
}
/*
* This routine handles processing a NameServer REG_LOGIN mailbox
* command upon completion. It is setup in the LPFC_MBOXQ
* as the completion routine when the command is
* handed off to the SLI layer.
*/
void
lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
struct lpfc_sli *psli;
MAILBOX_t *mb;
struct lpfc_dmabuf *mp;
struct lpfc_nodelist *ndlp;
psli = &phba->sli;
mb = &pmb->mb;
ndlp = (struct lpfc_nodelist *) pmb->context2;
mp = (struct lpfc_dmabuf *) (pmb->context1);
if (mb->mbxStatus) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free( pmb, phba->mbox_mem_pool);
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
/* RegLogin failed, so just use loop map to make discovery
list */
lpfc_disc_list_loopmap(phba);
/* Start discovery */
lpfc_disc_start(phba);
return;
}
pmb->context1 = NULL;
ndlp->nlp_rpi = mb->un.varWords[0];
ndlp->nlp_type |= NLP_FABRIC;
ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
if (phba->hba_state < LPFC_HBA_READY) {
/* Link up discovery requires Fabrib registration. */
lpfc_ns_cmd(phba, ndlp, SLI_CTNS_RNN_ID);
lpfc_ns_cmd(phba, ndlp, SLI_CTNS_RSNN_NN);
lpfc_ns_cmd(phba, ndlp, SLI_CTNS_RFT_ID);
}
phba->fc_ns_retry = 0;
/* Good status, issue CT Request to NameServer */
if (lpfc_ns_cmd(phba, ndlp, SLI_CTNS_GID_FT)) {
/* Cannot issue NameServer Query, so finish up discovery */
lpfc_disc_start(phba);
}
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free( pmb, phba->mbox_mem_pool);
return;
}
static void
lpfc_register_remote_port(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp)
{
struct fc_rport *rport;
struct lpfc_rport_data *rdata;
struct fc_rport_identifiers rport_ids;
/* Remote port has reappeared. Re-register w/ FC transport */
rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
rport_ids.port_id = ndlp->nlp_DID;
rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
ndlp->rport = rport = fc_remote_port_add(phba->host, 0, &rport_ids);
if (!rport) {
dev_printk(KERN_WARNING, &phba->pcidev->dev,
"Warning: fc_remote_port_add failed\n");
return;
}
/* initialize static port data */
rport->maxframe_size = ndlp->nlp_maxframe;
rport->supported_classes = ndlp->nlp_class_sup;
rdata = rport->dd_data;
rdata->pnode = ndlp;
if (ndlp->nlp_type & NLP_FCP_TARGET)
rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
if (ndlp->nlp_type & NLP_FCP_INITIATOR)
rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
fc_remote_port_rolechg(rport, rport_ids.roles);
if ((rport->scsi_target_id != -1) &&
(rport->scsi_target_id < LPFC_MAX_TARGET)) {
ndlp->nlp_sid = rport->scsi_target_id;
}
return;
}
static void
lpfc_unregister_remote_port(struct lpfc_hba * phba,
struct lpfc_nodelist * ndlp)
{
struct fc_rport *rport = ndlp->rport;
struct lpfc_rport_data *rdata = rport->dd_data;
ndlp->rport = NULL;
rdata->pnode = NULL;
fc_remote_port_delete(rport);
return;
}
int
lpfc_nlp_list(struct lpfc_hba * phba, struct lpfc_nodelist * nlp, int list)
{
enum { none, unmapped, mapped } rport_add = none, rport_del = none;
struct lpfc_sli *psli;
psli = &phba->sli;
/* Sanity check to ensure we are not moving to / from the same list */
if ((nlp->nlp_flag & NLP_LIST_MASK) == list)
if (list != NLP_NO_LIST)
return 0;
spin_lock_irq(phba->host->host_lock);
switch (nlp->nlp_flag & NLP_LIST_MASK) {
case NLP_NO_LIST: /* Not on any list */
break;
case NLP_UNUSED_LIST:
phba->fc_unused_cnt--;
list_del(&nlp->nlp_listp);
break;
case NLP_PLOGI_LIST:
phba->fc_plogi_cnt--;
list_del(&nlp->nlp_listp);
break;
case NLP_ADISC_LIST:
phba->fc_adisc_cnt--;
list_del(&nlp->nlp_listp);
break;
case NLP_REGLOGIN_LIST:
phba->fc_reglogin_cnt--;
list_del(&nlp->nlp_listp);
break;
case NLP_PRLI_LIST:
phba->fc_prli_cnt--;
list_del(&nlp->nlp_listp);
break;
case NLP_UNMAPPED_LIST:
phba->fc_unmap_cnt--;
list_del(&nlp->nlp_listp);
nlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
nlp->nlp_type &= ~NLP_FC_NODE;
phba->nport_event_cnt++;
if (nlp->rport)
rport_del = unmapped;
break;
case NLP_MAPPED_LIST:
phba->fc_map_cnt--;
list_del(&nlp->nlp_listp);
phba->nport_event_cnt++;
if (nlp->rport)
rport_del = mapped;
break;
case NLP_NPR_LIST:
phba->fc_npr_cnt--;
list_del(&nlp->nlp_listp);
/* Stop delay tmo if taking node off NPR list */
if ((nlp->nlp_flag & NLP_DELAY_TMO) &&
(list != NLP_NPR_LIST)) {
spin_unlock_irq(phba->host->host_lock);
lpfc_cancel_retry_delay_tmo(phba, nlp);
spin_lock_irq(phba->host->host_lock);
}
break;
}
nlp->nlp_flag &= ~NLP_LIST_MASK;
/* Add NPort <did> to <num> list */
lpfc_printf_log(phba,
KERN_INFO,
LOG_NODE,
"%d:0904 Add NPort x%x to %d list Data: x%x\n",
phba->brd_no,
nlp->nlp_DID, list, nlp->nlp_flag);
switch (list) {
case NLP_NO_LIST: /* No list, just remove it */
spin_unlock_irq(phba->host->host_lock);
lpfc_nlp_remove(phba, nlp);
spin_lock_irq(phba->host->host_lock);
/* as node removed - stop further transport calls */
rport_del = none;
break;
case NLP_UNUSED_LIST:
nlp->nlp_flag |= list;
/* Put it at the end of the unused list */
list_add_tail(&nlp->nlp_listp, &phba->fc_unused_list);
phba->fc_unused_cnt++;
break;
case NLP_PLOGI_LIST:
nlp->nlp_flag |= list;
/* Put it at the end of the plogi list */
list_add_tail(&nlp->nlp_listp, &phba->fc_plogi_list);
phba->fc_plogi_cnt++;
break;
case NLP_ADISC_LIST:
nlp->nlp_flag |= list;
/* Put it at the end of the adisc list */
list_add_tail(&nlp->nlp_listp, &phba->fc_adisc_list);
phba->fc_adisc_cnt++;
break;
case NLP_REGLOGIN_LIST:
nlp->nlp_flag |= list;
/* Put it at the end of the reglogin list */
list_add_tail(&nlp->nlp_listp, &phba->fc_reglogin_list);
phba->fc_reglogin_cnt++;
break;
case NLP_PRLI_LIST:
nlp->nlp_flag |= list;
/* Put it at the end of the prli list */
list_add_tail(&nlp->nlp_listp, &phba->fc_prli_list);
phba->fc_prli_cnt++;
break;
case NLP_UNMAPPED_LIST:
rport_add = unmapped;
/* ensure all vestiges of "mapped" significance are gone */
nlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
nlp->nlp_flag |= list;
/* Put it at the end of the unmap list */
list_add_tail(&nlp->nlp_listp, &phba->fc_nlpunmap_list);
phba->fc_unmap_cnt++;
phba->nport_event_cnt++;
/* stop nodev tmo if running */
if (nlp->nlp_flag & NLP_NODEV_TMO) {
nlp->nlp_flag &= ~NLP_NODEV_TMO;
spin_unlock_irq(phba->host->host_lock);
del_timer_sync(&nlp->nlp_tmofunc);
spin_lock_irq(phba->host->host_lock);
if (!list_empty(&nlp->nodev_timeout_evt.evt_listp))
list_del_init(&nlp->nodev_timeout_evt.
evt_listp);
}
nlp->nlp_flag &= ~NLP_NODEV_REMOVE;
nlp->nlp_type |= NLP_FC_NODE;
break;
case NLP_MAPPED_LIST:
rport_add = mapped;
nlp->nlp_flag |= list;
/* Put it at the end of the map list */
list_add_tail(&nlp->nlp_listp, &phba->fc_nlpmap_list);
phba->fc_map_cnt++;
phba->nport_event_cnt++;
/* stop nodev tmo if running */
if (nlp->nlp_flag & NLP_NODEV_TMO) {
nlp->nlp_flag &= ~NLP_NODEV_TMO;
spin_unlock_irq(phba->host->host_lock);
del_timer_sync(&nlp->nlp_tmofunc);
spin_lock_irq(phba->host->host_lock);
if (!list_empty(&nlp->nodev_timeout_evt.evt_listp))
list_del_init(&nlp->nodev_timeout_evt.
evt_listp);
}
nlp->nlp_flag &= ~NLP_NODEV_REMOVE;
break;
case NLP_NPR_LIST:
nlp->nlp_flag |= list;
/* Put it at the end of the npr list */
list_add_tail(&nlp->nlp_listp, &phba->fc_npr_list);
phba->fc_npr_cnt++;
if (!(nlp->nlp_flag & NLP_NODEV_TMO))
mod_timer(&nlp->nlp_tmofunc,
jiffies + HZ * phba->cfg_nodev_tmo);
nlp->nlp_flag |= NLP_NODEV_TMO;
nlp->nlp_flag &= ~NLP_RCV_PLOGI;
break;
case NLP_JUST_DQ:
break;
}
spin_unlock_irq(phba->host->host_lock);
/*
* We make all the calls into the transport after we have
* moved the node between lists. This so that we don't
* release the lock while in-between lists.
*/
/* Don't upcall midlayer if we're unloading */
if (!(phba->fc_flag & FC_UNLOADING)) {
/*
* We revalidate the rport pointer as the "add" function
* may have removed the remote port.
*/
if ((rport_del != none) && nlp->rport)
lpfc_unregister_remote_port(phba, nlp);
if (rport_add != none) {
/*
* Tell the fc transport about the port, if we haven't
* already. If we have, and it's a scsi entity, be
* sure to unblock any attached scsi devices
*/
if (!nlp->rport)
lpfc_register_remote_port(phba, nlp);
/*
* if we added to Mapped list, but the remote port
* registration failed or assigned a target id outside
* our presentable range - move the node to the
* Unmapped List
*/
if ((rport_add == mapped) &&
((!nlp->rport) ||
(nlp->rport->scsi_target_id == -1) ||
(nlp->rport->scsi_target_id >= LPFC_MAX_TARGET))) {
nlp->nlp_state = NLP_STE_UNMAPPED_NODE;
spin_lock_irq(phba->host->host_lock);
nlp->nlp_flag |= NLP_TGT_NO_SCSIID;
spin_unlock_irq(phba->host->host_lock);
lpfc_nlp_list(phba, nlp, NLP_UNMAPPED_LIST);
}
}
}
return 0;
}
/*
* Start / ReStart rescue timer for Discovery / RSCN handling
*/
void
lpfc_set_disctmo(struct lpfc_hba * phba)
{
uint32_t tmo;
if (phba->hba_state == LPFC_LOCAL_CFG_LINK) {
/* For FAN, timeout should be greater then edtov */
tmo = (((phba->fc_edtov + 999) / 1000) + 1);
} else {
/* Normal discovery timeout should be > then ELS/CT timeout
* FC spec states we need 3 * ratov for CT requests
*/
tmo = ((phba->fc_ratov * 3) + 3);
}
mod_timer(&phba->fc_disctmo, jiffies + HZ * tmo);
spin_lock_irq(phba->host->host_lock);
phba->fc_flag |= FC_DISC_TMO;
spin_unlock_irq(phba->host->host_lock);
/* Start Discovery Timer state <hba_state> */
lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
"%d:0247 Start Discovery Timer state x%x "
"Data: x%x x%lx x%x x%x\n",
phba->brd_no,
phba->hba_state, tmo, (unsigned long)&phba->fc_disctmo,
phba->fc_plogi_cnt, phba->fc_adisc_cnt);
return;
}
/*
* Cancel rescue timer for Discovery / RSCN handling
*/
int
lpfc_can_disctmo(struct lpfc_hba * phba)
{
/* Turn off discovery timer if its running */
if (phba->fc_flag & FC_DISC_TMO) {
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~FC_DISC_TMO;
spin_unlock_irq(phba->host->host_lock);
del_timer_sync(&phba->fc_disctmo);
phba->work_hba_events &= ~WORKER_DISC_TMO;
}
/* Cancel Discovery Timer state <hba_state> */
lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
"%d:0248 Cancel Discovery Timer state x%x "
"Data: x%x x%x x%x\n",
phba->brd_no, phba->hba_state, phba->fc_flag,
phba->fc_plogi_cnt, phba->fc_adisc_cnt);
return 0;
}
/*
* Check specified ring for outstanding IOCB on the SLI queue
* Return true if iocb matches the specified nport
*/
int
lpfc_check_sli_ndlp(struct lpfc_hba * phba,
struct lpfc_sli_ring * pring,
struct lpfc_iocbq * iocb, struct lpfc_nodelist * ndlp)
{
struct lpfc_sli *psli;
IOCB_t *icmd;
psli = &phba->sli;
icmd = &iocb->iocb;
if (pring->ringno == LPFC_ELS_RING) {
switch (icmd->ulpCommand) {
case CMD_GEN_REQUEST64_CR:
if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi)
return 1;
case CMD_ELS_REQUEST64_CR:
if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID)
return 1;
case CMD_XMIT_ELS_RSP64_CX:
if (iocb->context1 == (uint8_t *) ndlp)
return 1;
}
} else if (pring->ringno == psli->ip_ring) {
} else if (pring->ringno == psli->fcp_ring) {
/* Skip match check if waiting to relogin to FCP target */
if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
(ndlp->nlp_flag & NLP_DELAY_TMO)) {
return 0;
}
if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) {
return 1;
}
} else if (pring->ringno == psli->next_ring) {
}
return 0;
}
/*
* Free resources / clean up outstanding I/Os
* associated with nlp_rpi in the LPFC_NODELIST entry.
*/
static int
lpfc_no_rpi(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
{
struct lpfc_sli *psli;
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *iocb, *next_iocb;
IOCB_t *icmd;
uint32_t rpi, i;
/*
* Everything that matches on txcmplq will be returned
* by firmware with a no rpi error.
*/
psli = &phba->sli;
rpi = ndlp->nlp_rpi;
if (rpi) {
/* Now process each ring */
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
spin_lock_irq(phba->host->host_lock);
list_for_each_entry_safe(iocb, next_iocb, &pring->txq,
list) {
/*
* Check to see if iocb matches the nport we are
* looking for
*/
if ((lpfc_check_sli_ndlp
(phba, pring, iocb, ndlp))) {
/* It matches, so deque and call compl
with an error */
list_del(&iocb->list);
pring->txq_cnt--;
if (iocb->iocb_cmpl) {
icmd = &iocb->iocb;
icmd->ulpStatus =
IOSTAT_LOCAL_REJECT;
icmd->un.ulpWord[4] =
IOERR_SLI_ABORTED;
spin_unlock_irq(phba->host->
host_lock);
(iocb->iocb_cmpl) (phba,
iocb, iocb);
spin_lock_irq(phba->host->
host_lock);
} else
lpfc_sli_release_iocbq(phba,
iocb);
}
}
spin_unlock_irq(phba->host->host_lock);
}
}
return 0;
}
/*
* Free rpi associated with LPFC_NODELIST entry.
* This routine is called from lpfc_freenode(), when we are removing
* a LPFC_NODELIST entry. It is also called if the driver initiates a
* LOGO that completes successfully, and we are waiting to PLOGI back
* to the remote NPort. In addition, it is called after we receive
* and unsolicated ELS cmd, send back a rsp, the rsp completes and
* we are waiting to PLOGI back to the remote NPort.
*/
int
lpfc_unreg_rpi(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
{
LPFC_MBOXQ_t *mbox;
int rc;
if (ndlp->nlp_rpi) {
if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))) {
lpfc_unreg_login(phba, ndlp->nlp_rpi, mbox);
mbox->mbox_cmpl=lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox
(phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
if (rc == MBX_NOT_FINISHED)
mempool_free( mbox, phba->mbox_mem_pool);
}
lpfc_no_rpi(phba, ndlp);
ndlp->nlp_rpi = 0;
return 1;
}
return 0;
}
/*
* Free resources associated with LPFC_NODELIST entry
* so it can be freed.
*/
static int
lpfc_freenode(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
{
LPFC_MBOXQ_t *mb;
LPFC_MBOXQ_t *nextmb;
struct lpfc_dmabuf *mp;
/* Cleanup node for NPort <nlp_DID> */
lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
"%d:0900 Cleanup node for NPort x%x "
"Data: x%x x%x x%x\n",
phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
ndlp->nlp_state, ndlp->nlp_rpi);
lpfc_nlp_list(phba, ndlp, NLP_JUST_DQ);
/*
* if unloading the driver - just leave the remote port in place.
* The driver unload will force the attached devices to detach
* and flush cache's w/o generating flush errors.
*/
if ((ndlp->rport) && !(phba->fc_flag & FC_UNLOADING)) {
lpfc_unregister_remote_port(phba, ndlp);
ndlp->nlp_sid = NLP_NO_SID;
}
/* cleanup any ndlp on mbox q waiting for reglogin cmpl */
if ((mb = phba->sli.mbox_active)) {
if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
(ndlp == (struct lpfc_nodelist *) mb->context2)) {
mb->context2 = NULL;
mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
}
}
spin_lock_irq(phba->host->host_lock);
list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
(ndlp == (struct lpfc_nodelist *) mb->context2)) {
mp = (struct lpfc_dmabuf *) (mb->context1);
if (mp) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
}
list_del(&mb->list);
mempool_free(mb, phba->mbox_mem_pool);
}
}
spin_unlock_irq(phba->host->host_lock);
lpfc_els_abort(phba,ndlp,0);
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~(NLP_NODEV_TMO|NLP_DELAY_TMO);
spin_unlock_irq(phba->host->host_lock);
del_timer_sync(&ndlp->nlp_tmofunc);
ndlp->nlp_last_elscmd = 0;
del_timer_sync(&ndlp->nlp_delayfunc);
if (!list_empty(&ndlp->nodev_timeout_evt.evt_listp))
list_del_init(&ndlp->nodev_timeout_evt.evt_listp);
if (!list_empty(&ndlp->els_retry_evt.evt_listp))
list_del_init(&ndlp->els_retry_evt.evt_listp);
lpfc_unreg_rpi(phba, ndlp);
return 0;
}
/*
* Check to see if we can free the nlp back to the freelist.
* If we are in the middle of using the nlp in the discovery state
* machine, defer the free till we reach the end of the state machine.
*/
int
lpfc_nlp_remove(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
{
if (ndlp->nlp_flag & NLP_NODEV_TMO) {
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_NODEV_TMO;
spin_unlock_irq(phba->host->host_lock);
del_timer_sync(&ndlp->nlp_tmofunc);
if (!list_empty(&ndlp->nodev_timeout_evt.evt_listp))
list_del_init(&ndlp->nodev_timeout_evt.evt_listp);
}
if (ndlp->nlp_flag & NLP_DELAY_TMO) {
lpfc_cancel_retry_delay_tmo(phba, ndlp);
}
if (ndlp->nlp_disc_refcnt) {
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag |= NLP_DELAY_REMOVE;
spin_unlock_irq(phba->host->host_lock);
} else {
lpfc_freenode(phba, ndlp);
mempool_free( ndlp, phba->nlp_mem_pool);
}
return 0;
}
static int
lpfc_matchdid(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp, uint32_t did)
{
D_ID mydid;
D_ID ndlpdid;
D_ID matchdid;
if (did == Bcast_DID)
return 0;
if (ndlp->nlp_DID == 0) {
return 0;
}
/* First check for Direct match */
if (ndlp->nlp_DID == did)
return 1;
/* Next check for area/domain identically equals 0 match */
mydid.un.word = phba->fc_myDID;
if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) {
return 0;
}
matchdid.un.word = did;
ndlpdid.un.word = ndlp->nlp_DID;
if (matchdid.un.b.id == ndlpdid.un.b.id) {
if ((mydid.un.b.domain == matchdid.un.b.domain) &&
(mydid.un.b.area == matchdid.un.b.area)) {
if ((ndlpdid.un.b.domain == 0) &&
(ndlpdid.un.b.area == 0)) {
if (ndlpdid.un.b.id)
return 1;
}
return 0;
}
matchdid.un.word = ndlp->nlp_DID;
if ((mydid.un.b.domain == ndlpdid.un.b.domain) &&
(mydid.un.b.area == ndlpdid.un.b.area)) {
if ((matchdid.un.b.domain == 0) &&
(matchdid.un.b.area == 0)) {
if (matchdid.un.b.id)
return 1;
}
}
}
return 0;
}
/* Search for a nodelist entry on a specific list */
struct lpfc_nodelist *
lpfc_findnode_did(struct lpfc_hba * phba, uint32_t order, uint32_t did)
{
struct lpfc_nodelist *ndlp, *next_ndlp;
uint32_t data1;
spin_lock_irq(phba->host->host_lock);
if (order & NLP_SEARCH_UNMAPPED) {
list_for_each_entry_safe(ndlp, next_ndlp,
&phba->fc_nlpunmap_list, nlp_listp) {
if (lpfc_matchdid(phba, ndlp, did)) {
data1 = (((uint32_t) ndlp->nlp_state << 24) |
((uint32_t) ndlp->nlp_xri << 16) |
((uint32_t) ndlp->nlp_type << 8) |
((uint32_t) ndlp->nlp_rpi & 0xff));
/* FIND node DID unmapped */
lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
"%d:0929 FIND node DID unmapped"
" Data: x%p x%x x%x x%x\n",
phba->brd_no,
ndlp, ndlp->nlp_DID,
ndlp->nlp_flag, data1);
spin_unlock_irq(phba->host->host_lock);
return ndlp;
}
}
}
if (order & NLP_SEARCH_MAPPED) {
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_nlpmap_list,
nlp_listp) {
if (lpfc_matchdid(phba, ndlp, did)) {
data1 = (((uint32_t) ndlp->nlp_state << 24) |
((uint32_t) ndlp->nlp_xri << 16) |
((uint32_t) ndlp->nlp_type << 8) |
((uint32_t) ndlp->nlp_rpi & 0xff));
/* FIND node DID mapped */
lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
"%d:0930 FIND node DID mapped "
"Data: x%p x%x x%x x%x\n",
phba->brd_no,
ndlp, ndlp->nlp_DID,
ndlp->nlp_flag, data1);
spin_unlock_irq(phba->host->host_lock);
return ndlp;
}
}
}
if (order & NLP_SEARCH_PLOGI) {
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_plogi_list,
nlp_listp) {
if (lpfc_matchdid(phba, ndlp, did)) {
data1 = (((uint32_t) ndlp->nlp_state << 24) |
((uint32_t) ndlp->nlp_xri << 16) |
((uint32_t) ndlp->nlp_type << 8) |
((uint32_t) ndlp->nlp_rpi & 0xff));
/* LOG change to PLOGI */
/* FIND node DID plogi */
lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
"%d:0908 FIND node DID plogi "
"Data: x%p x%x x%x x%x\n",
phba->brd_no,
ndlp, ndlp->nlp_DID,
ndlp->nlp_flag, data1);
spin_unlock_irq(phba->host->host_lock);
return ndlp;
}
}
}
if (order & NLP_SEARCH_ADISC) {
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_adisc_list,
nlp_listp) {
if (lpfc_matchdid(phba, ndlp, did)) {
data1 = (((uint32_t) ndlp->nlp_state << 24) |
((uint32_t) ndlp->nlp_xri << 16) |
((uint32_t) ndlp->nlp_type << 8) |
((uint32_t) ndlp->nlp_rpi & 0xff));
/* LOG change to ADISC */
/* FIND node DID adisc */
lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
"%d:0931 FIND node DID adisc "
"Data: x%p x%x x%x x%x\n",
phba->brd_no,
ndlp, ndlp->nlp_DID,
ndlp->nlp_flag, data1);
spin_unlock_irq(phba->host->host_lock);
return ndlp;
}
}
}
if (order & NLP_SEARCH_REGLOGIN) {
list_for_each_entry_safe(ndlp, next_ndlp,
&phba->fc_reglogin_list, nlp_listp) {
if (lpfc_matchdid(phba, ndlp, did)) {
data1 = (((uint32_t) ndlp->nlp_state << 24) |
((uint32_t) ndlp->nlp_xri << 16) |
((uint32_t) ndlp->nlp_type << 8) |
((uint32_t) ndlp->nlp_rpi & 0xff));
/* LOG change to REGLOGIN */
/* FIND node DID reglogin */
lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
"%d:0901 FIND node DID reglogin"
" Data: x%p x%x x%x x%x\n",
phba->brd_no,
ndlp, ndlp->nlp_DID,
ndlp->nlp_flag, data1);
spin_unlock_irq(phba->host->host_lock);
return ndlp;
}
}
}
if (order & NLP_SEARCH_PRLI) {
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_prli_list,
nlp_listp) {
if (lpfc_matchdid(phba, ndlp, did)) {
data1 = (((uint32_t) ndlp->nlp_state << 24) |
((uint32_t) ndlp->nlp_xri << 16) |
((uint32_t) ndlp->nlp_type << 8) |
((uint32_t) ndlp->nlp_rpi & 0xff));
/* LOG change to PRLI */
/* FIND node DID prli */
lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
"%d:0902 FIND node DID prli "
"Data: x%p x%x x%x x%x\n",
phba->brd_no,
ndlp, ndlp->nlp_DID,
ndlp->nlp_flag, data1);
spin_unlock_irq(phba->host->host_lock);
return ndlp;
}
}
}
if (order & NLP_SEARCH_NPR) {
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
nlp_listp) {
if (lpfc_matchdid(phba, ndlp, did)) {
data1 = (((uint32_t) ndlp->nlp_state << 24) |
((uint32_t) ndlp->nlp_xri << 16) |
((uint32_t) ndlp->nlp_type << 8) |
((uint32_t) ndlp->nlp_rpi & 0xff));
/* LOG change to NPR */
/* FIND node DID npr */
lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
"%d:0903 FIND node DID npr "
"Data: x%p x%x x%x x%x\n",
phba->brd_no,
ndlp, ndlp->nlp_DID,
ndlp->nlp_flag, data1);
spin_unlock_irq(phba->host->host_lock);
return ndlp;
}
}
}
if (order & NLP_SEARCH_UNUSED) {
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_adisc_list,
nlp_listp) {
if (lpfc_matchdid(phba, ndlp, did)) {
data1 = (((uint32_t) ndlp->nlp_state << 24) |
((uint32_t) ndlp->nlp_xri << 16) |
((uint32_t) ndlp->nlp_type << 8) |
((uint32_t) ndlp->nlp_rpi & 0xff));
/* LOG change to UNUSED */
/* FIND node DID unused */
lpfc_printf_log(phba, KERN_INFO, LOG_NODE,
"%d:0905 FIND node DID unused "
"Data: x%p x%x x%x x%x\n",
phba->brd_no,
ndlp, ndlp->nlp_DID,
ndlp->nlp_flag, data1);
spin_unlock_irq(phba->host->host_lock);
return ndlp;
}
}
}
spin_unlock_irq(phba->host->host_lock);
/* FIND node did <did> NOT FOUND */
lpfc_printf_log(phba,
KERN_INFO,
LOG_NODE,
"%d:0932 FIND node did x%x NOT FOUND Data: x%x\n",
phba->brd_no, did, order);
/* no match found */
return NULL;
}
struct lpfc_nodelist *
lpfc_setup_disc_node(struct lpfc_hba * phba, uint32_t did)
{
struct lpfc_nodelist *ndlp;
uint32_t flg;
ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, did);
if (!ndlp) {
if ((phba->fc_flag & FC_RSCN_MODE) &&
((lpfc_rscn_payload_check(phba, did) == 0)))
return NULL;
ndlp = (struct lpfc_nodelist *)
mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
if (!ndlp)
return NULL;
lpfc_nlp_init(phba, ndlp, did);
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
return ndlp;
}
if (phba->fc_flag & FC_RSCN_MODE) {
if (lpfc_rscn_payload_check(phba, did)) {
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
/* Since this node is marked for discovery,
* delay timeout is not needed.
*/
if (ndlp->nlp_flag & NLP_DELAY_TMO)
lpfc_cancel_retry_delay_tmo(phba, ndlp);
} else
ndlp = NULL;
} else {
flg = ndlp->nlp_flag & NLP_LIST_MASK;
if ((flg == NLP_ADISC_LIST) || (flg == NLP_PLOGI_LIST))
return NULL;
ndlp->nlp_state = NLP_STE_NPR_NODE;
lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
}
return ndlp;
}
/* Build a list of nodes to discover based on the loopmap */
void
lpfc_disc_list_loopmap(struct lpfc_hba * phba)
{
int j;
uint32_t alpa, index;
if (phba->hba_state <= LPFC_LINK_DOWN) {
return;
}
if (phba->fc_topology != TOPOLOGY_LOOP) {
return;
}
/* Check for loop map present or not */
if (phba->alpa_map[0]) {
for (j = 1; j <= phba->alpa_map[0]; j++) {
alpa = phba->alpa_map[j];
if (((phba->fc_myDID & 0xff) == alpa) || (alpa == 0)) {
continue;
}
lpfc_setup_disc_node(phba, alpa);
}
} else {
/* No alpamap, so try all alpa's */
for (j = 0; j < FC_MAXLOOP; j++) {
/* If cfg_scan_down is set, start from highest
* ALPA (0xef) to lowest (0x1).
*/
if (phba->cfg_scan_down)
index = j;
else
index = FC_MAXLOOP - j - 1;
alpa = lpfcAlpaArray[index];
if ((phba->fc_myDID & 0xff) == alpa) {
continue;
}
lpfc_setup_disc_node(phba, alpa);
}
}
return;
}
/* Start Link up / RSCN discovery on NPR list */
void
lpfc_disc_start(struct lpfc_hba * phba)
{
struct lpfc_sli *psli;
LPFC_MBOXQ_t *mbox;
struct lpfc_nodelist *ndlp, *next_ndlp;
uint32_t did_changed, num_sent;
uint32_t clear_la_pending;
int rc;
psli = &phba->sli;
if (phba->hba_state <= LPFC_LINK_DOWN) {
return;
}
if (phba->hba_state == LPFC_CLEAR_LA)
clear_la_pending = 1;
else
clear_la_pending = 0;
if (phba->hba_state < LPFC_HBA_READY) {
phba->hba_state = LPFC_DISC_AUTH;
}
lpfc_set_disctmo(phba);
if (phba->fc_prevDID == phba->fc_myDID) {
did_changed = 0;
} else {
did_changed = 1;
}
phba->fc_prevDID = phba->fc_myDID;
phba->num_disc_nodes = 0;
/* Start Discovery state <hba_state> */
lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
"%d:0202 Start Discovery hba state x%x "
"Data: x%x x%x x%x\n",
phba->brd_no, phba->hba_state, phba->fc_flag,
phba->fc_plogi_cnt, phba->fc_adisc_cnt);
/* If our did changed, we MUST do PLOGI */
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
nlp_listp) {
if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
if (did_changed) {
spin_lock_irq(phba->host->host_lock);
ndlp->nlp_flag &= ~NLP_NPR_ADISC;
spin_unlock_irq(phba->host->host_lock);
}
}
}
/* First do ADISCs - if any */
num_sent = lpfc_els_disc_adisc(phba);
if (num_sent)
return;
if ((phba->hba_state < LPFC_HBA_READY) && (!clear_la_pending)) {
/* If we get here, there is nothing to ADISC */
if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))) {
phba->hba_state = LPFC_CLEAR_LA;
lpfc_clear_la(phba, mbox);
mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
rc = lpfc_sli_issue_mbox(phba, mbox,
(MBX_NOWAIT | MBX_STOP_IOCB));
if (rc == MBX_NOT_FINISHED) {
mempool_free( mbox, phba->mbox_mem_pool);
lpfc_disc_flush_list(phba);
psli->ring[(psli->ip_ring)].flag &=
~LPFC_STOP_IOCB_EVENT;
psli->ring[(psli->fcp_ring)].flag &=
~LPFC_STOP_IOCB_EVENT;
psli->ring[(psli->next_ring)].flag &=
~LPFC_STOP_IOCB_EVENT;
phba->hba_state = LPFC_HBA_READY;
}
}
} else {
/* Next do PLOGIs - if any */
num_sent = lpfc_els_disc_plogi(phba);
if (num_sent)
return;
if (phba->fc_flag & FC_RSCN_MODE) {
/* Check to see if more RSCNs came in while we
* were processing this one.
*/
if ((phba->fc_rscn_id_cnt == 0) &&
(!(phba->fc_flag & FC_RSCN_DISCOVERY))) {
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~FC_RSCN_MODE;
spin_unlock_irq(phba->host->host_lock);
} else
lpfc_els_handle_rscn(phba);
}
}
return;
}
/*
* Ignore completion for all IOCBs on tx and txcmpl queue for ELS
* ring the match the sppecified nodelist.
*/
static void
lpfc_free_tx(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
{
struct lpfc_sli *psli;
IOCB_t *icmd;
struct lpfc_iocbq *iocb, *next_iocb;
struct lpfc_sli_ring *pring;
struct lpfc_dmabuf *mp;
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING];
/* Error matching iocb on txq or txcmplq
* First check the txq.
*/
list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
if (iocb->context1 != ndlp) {
continue;
}
icmd = &iocb->iocb;
if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
(icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
list_del(&iocb->list);
pring->txq_cnt--;
lpfc_els_free_iocb(phba, iocb);
}
}
/* Next check the txcmplq */
list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
if (iocb->context1 != ndlp) {
continue;
}
icmd = &iocb->iocb;
if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) ||
(icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) {
iocb->iocb_cmpl = NULL;
/* context2 = cmd, context2->next = rsp, context3 =
bpl */
if (iocb->context2) {
/* Free the response IOCB before handling the
command. */
mp = (struct lpfc_dmabuf *) (iocb->context2);
mp = list_get_first(&mp->list,
struct lpfc_dmabuf,
list);
if (mp) {
/* Delay before releasing rsp buffer to
* give UNREG mbox a chance to take
* effect.
*/
list_add(&mp->list,
&phba->freebufList);
}
lpfc_mbuf_free(phba,
((struct lpfc_dmabuf *)
iocb->context2)->virt,
((struct lpfc_dmabuf *)
iocb->context2)->phys);
kfree(iocb->context2);
}
if (iocb->context3) {
lpfc_mbuf_free(phba,
((struct lpfc_dmabuf *)
iocb->context3)->virt,
((struct lpfc_dmabuf *)
iocb->context3)->phys);
kfree(iocb->context3);
}
}
}
return;
}
void
lpfc_disc_flush_list(struct lpfc_hba * phba)
{
struct lpfc_nodelist *ndlp, *next_ndlp;
if (phba->fc_plogi_cnt) {
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_plogi_list,
nlp_listp) {
lpfc_free_tx(phba, ndlp);
lpfc_nlp_remove(phba, ndlp);
}
}
if (phba->fc_adisc_cnt) {
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_adisc_list,
nlp_listp) {
lpfc_free_tx(phba, ndlp);
lpfc_nlp_remove(phba, ndlp);
}
}
return;
}
/*****************************************************************************/
/*
* NAME: lpfc_disc_timeout
*
* FUNCTION: Fibre Channel driver discovery timeout routine.
*
* EXECUTION ENVIRONMENT: interrupt only
*
* CALLED FROM:
* Timer function
*
* RETURNS:
* none
*/
/*****************************************************************************/
void
lpfc_disc_timeout(unsigned long ptr)
{
struct lpfc_hba *phba = (struct lpfc_hba *)ptr;
unsigned long flags = 0;
if (unlikely(!phba))
return;
spin_lock_irqsave(phba->host->host_lock, flags);
if (!(phba->work_hba_events & WORKER_DISC_TMO)) {
phba->work_hba_events |= WORKER_DISC_TMO;
if (phba->work_wait)
wake_up(phba->work_wait);
}
spin_unlock_irqrestore(phba->host->host_lock, flags);
return;
}
static void
lpfc_disc_timeout_handler(struct lpfc_hba *phba)
{
struct lpfc_sli *psli;
struct lpfc_nodelist *ndlp, *next_ndlp;
LPFC_MBOXQ_t *clearlambox, *initlinkmbox;
int rc, clrlaerr = 0;
if (unlikely(!phba))
return;
if (!(phba->fc_flag & FC_DISC_TMO))
return;
psli = &phba->sli;
spin_lock_irq(phba->host->host_lock);
phba->fc_flag &= ~FC_DISC_TMO;
spin_unlock_irq(phba->host->host_lock);
switch (phba->hba_state) {
case LPFC_LOCAL_CFG_LINK:
/* hba_state is identically LPFC_LOCAL_CFG_LINK while waiting for FAN */
/* FAN timeout */
lpfc_printf_log(phba,
KERN_WARNING,
LOG_DISCOVERY,
"%d:0221 FAN timeout\n",
phba->brd_no);
/* Start discovery by sending FLOGI, clean up old rpis */
list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_npr_list,
nlp_listp) {
if (ndlp->nlp_type & NLP_FABRIC) {
/* Clean up the ndlp on Fabric connections */
lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
} else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
/* Fail outstanding IO now since device
* is marked for PLOGI.
*/
lpfc_unreg_rpi(phba, ndlp);
}
}
phba->hba_state = LPFC_FLOGI;
lpfc_set_disctmo(phba);
lpfc_initial_flogi(phba);
break;
case LPFC_FLOGI:
/* hba_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
/* Initial FLOGI timeout */
lpfc_printf_log(phba,
KERN_ERR,
LOG_DISCOVERY,
"%d:0222 Initial FLOGI timeout\n",
phba->brd_no);
/* Assume no Fabric and go on with discovery.
* Check for outstanding ELS FLOGI to abort.
*/
/* FLOGI failed, so just use loop map to make discovery list */
lpfc_disc_list_loopmap(phba);
/* Start discovery */
lpfc_disc_start(phba);
break;
case LPFC_FABRIC_CFG_LINK:
/* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
NameServer login */
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
"%d:0223 Timeout while waiting for NameServer "
"login\n", phba->brd_no);
/* Next look for NameServer ndlp */
ndlp = lpfc_findnode_did(phba, NLP_SEARCH_ALL, NameServer_DID);
if (ndlp)
lpfc_nlp_remove(phba, ndlp);
/* Start discovery */
lpfc_disc_start(phba);
break;
case LPFC_NS_QRY:
/* Check for wait for NameServer Rsp timeout */
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
"%d:0224 NameServer Query timeout "
"Data: x%x x%x\n",
phba->brd_no,
phba->fc_ns_retry, LPFC_MAX_NS_RETRY);
ndlp = lpfc_findnode_did(phba, NLP_SEARCH_UNMAPPED,
NameServer_DID);
if (ndlp) {
if (phba->fc_ns_retry < LPFC_MAX_NS_RETRY) {
/* Try it one more time */
rc = lpfc_ns_cmd(phba, ndlp, SLI_CTNS_GID_FT);
if (rc == 0)
break;
}
phba->fc_ns_retry = 0;
}
/* Nothing to authenticate, so CLEAR_LA right now */
clearlambox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!clearlambox) {
clrlaerr = 1;
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
"%d:0226 Device Discovery "
"completion error\n",
phba->brd_no);
phba->hba_state = LPFC_HBA_ERROR;
break;
}
phba->hba_state = LPFC_CLEAR_LA;
lpfc_clear_la(phba, clearlambox);
clearlambox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
rc = lpfc_sli_issue_mbox(phba, clearlambox,
(MBX_NOWAIT | MBX_STOP_IOCB));
if (rc == MBX_NOT_FINISHED) {
mempool_free(clearlambox, phba->mbox_mem_pool);
clrlaerr = 1;
break;
}
/* Setup and issue mailbox INITIALIZE LINK command */
initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!initlinkmbox) {
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
"%d:0206 Device Discovery "
"completion error\n",
phba->brd_no);
phba->hba_state = LPFC_HBA_ERROR;
break;
}
lpfc_linkdown(phba);
lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
phba->cfg_link_speed);
initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
rc = lpfc_sli_issue_mbox(phba, initlinkmbox,
(MBX_NOWAIT | MBX_STOP_IOCB));
if (rc == MBX_NOT_FINISHED)
mempool_free(initlinkmbox, phba->mbox_mem_pool);
break;
case LPFC_DISC_AUTH:
/* Node Authentication timeout */
lpfc_printf_log(phba,
KERN_ERR,
LOG_DISCOVERY,
"%d:0227 Node Authentication timeout\n",
phba->brd_no);
lpfc_disc_flush_list(phba);
clearlambox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!clearlambox) {
clrlaerr = 1;
lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
"%d:0207 Device Discovery "
"completion error\n",
phba->brd_no);
phba->hba_state = LPFC_HBA_ERROR;
break;
}
phba->hba_state = LPFC_CLEAR_LA;
lpfc_clear_la(phba, clearlambox);
clearlambox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
rc = lpfc_sli_issue_mbox(phba, clearlambox,
(MBX_NOWAIT | MBX_STOP_IOCB));
if (rc == MBX_NOT_FINISHED) {
mempool_free(clearlambox, phba->mbox_mem_pool);
clrlaerr = 1;
}
break;
case LPFC_CLEAR_LA:
/* CLEAR LA timeout */
lpfc_printf_log(phba,
KERN_ERR,
LOG_DISCOVERY,
"%d:0228 CLEAR LA timeout\n",
phba->brd_no);
clrlaerr = 1;
break;
case LPFC_HBA_READY:
if (phba->fc_flag & FC_RSCN_MODE) {
lpfc_printf_log(phba,
KERN_ERR,
LOG_DISCOVERY,
"%d:0231 RSCN timeout Data: x%x x%x\n",
phba->brd_no,
phba->fc_ns_retry, LPFC_MAX_NS_RETRY);
/* Cleanup any outstanding ELS commands */
lpfc_els_flush_cmd(phba);
lpfc_els_flush_rscn(phba);
lpfc_disc_flush_list(phba);
}
break;
}
if (clrlaerr) {
lpfc_disc_flush_list(phba);
psli->ring[(psli->ip_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT;
phba->hba_state = LPFC_HBA_READY;
}
return;
}
static void
lpfc_nodev_timeout(unsigned long ptr)
{
struct lpfc_hba *phba;
struct lpfc_nodelist *ndlp;
unsigned long iflag;
struct lpfc_work_evt *evtp;
ndlp = (struct lpfc_nodelist *)ptr;
phba = ndlp->nlp_phba;
evtp = &ndlp->nodev_timeout_evt;
spin_lock_irqsave(phba->host->host_lock, iflag);
if (!list_empty(&evtp->evt_listp)) {
spin_unlock_irqrestore(phba->host->host_lock, iflag);
return;
}
evtp->evt_arg1 = ndlp;
evtp->evt = LPFC_EVT_NODEV_TMO;
list_add_tail(&evtp->evt_listp, &phba->work_list);
if (phba->work_wait)
wake_up(phba->work_wait);
spin_unlock_irqrestore(phba->host->host_lock, iflag);
return;
}
/*
* This routine handles processing a NameServer REG_LOGIN mailbox
* command upon completion. It is setup in the LPFC_MBOXQ
* as the completion routine when the command is
* handed off to the SLI layer.
*/
void
lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
struct lpfc_sli *psli;
MAILBOX_t *mb;
struct lpfc_dmabuf *mp;
struct lpfc_nodelist *ndlp;
psli = &phba->sli;
mb = &pmb->mb;
ndlp = (struct lpfc_nodelist *) pmb->context2;
mp = (struct lpfc_dmabuf *) (pmb->context1);
pmb->context1 = NULL;
ndlp->nlp_rpi = mb->un.varWords[0];
ndlp->nlp_type |= NLP_FABRIC;
ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
/* Start issuing Fabric-Device Management Interface (FDMI)
* command to 0xfffffa (FDMI well known port)
*/
if (phba->cfg_fdmi_on == 1) {
lpfc_fdmi_cmd(phba, ndlp, SLI_MGMT_DHBA);
} else {
/*
* Delay issuing FDMI command if fdmi-on=2
* (supporting RPA/hostnmae)
*/
mod_timer(&phba->fc_fdmitmo, jiffies + HZ * 60);
}
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free( pmb, phba->mbox_mem_pool);
return;
}
/*
* This routine looks up the ndlp lists
* for the given RPI. If rpi found
* it return the node list pointer
* else return NULL.
*/
struct lpfc_nodelist *
lpfc_findnode_rpi(struct lpfc_hba * phba, uint16_t rpi)
{
struct lpfc_nodelist *ndlp;
struct list_head * lists[]={&phba->fc_nlpunmap_list,
&phba->fc_nlpmap_list,
&phba->fc_plogi_list,
&phba->fc_adisc_list,
&phba->fc_reglogin_list};
int i;
spin_lock_irq(phba->host->host_lock);
for (i = 0; i < ARRAY_SIZE(lists); i++ )
list_for_each_entry(ndlp, lists[i], nlp_listp)
if (ndlp->nlp_rpi == rpi) {
spin_unlock_irq(phba->host->host_lock);
return ndlp;
}
spin_unlock_irq(phba->host->host_lock);
return NULL;
}
/*
* This routine looks up the ndlp lists
* for the given WWPN. If WWPN found
* it return the node list pointer
* else return NULL.
*/
struct lpfc_nodelist *
lpfc_findnode_wwpn(struct lpfc_hba * phba, uint32_t order,
struct lpfc_name * wwpn)
{
struct lpfc_nodelist *ndlp;
struct list_head * lists[]={&phba->fc_nlpunmap_list,
&phba->fc_nlpmap_list,
&phba->fc_npr_list,
&phba->fc_plogi_list,
&phba->fc_adisc_list,
&phba->fc_reglogin_list,
&phba->fc_prli_list};
uint32_t search[]={NLP_SEARCH_UNMAPPED,
NLP_SEARCH_MAPPED,
NLP_SEARCH_NPR,
NLP_SEARCH_PLOGI,
NLP_SEARCH_ADISC,
NLP_SEARCH_REGLOGIN,
NLP_SEARCH_PRLI};
int i;
spin_lock_irq(phba->host->host_lock);
for (i = 0; i < ARRAY_SIZE(lists); i++ ) {
if (!(order & search[i]))
continue;
list_for_each_entry(ndlp, lists[i], nlp_listp) {
if (memcmp(&ndlp->nlp_portname, wwpn,
sizeof(struct lpfc_name)) == 0) {
spin_unlock_irq(phba->host->host_lock);
return ndlp;
}
}
}
spin_unlock_irq(phba->host->host_lock);
return NULL;
}
void
lpfc_nlp_init(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
uint32_t did)
{
memset(ndlp, 0, sizeof (struct lpfc_nodelist));
INIT_LIST_HEAD(&ndlp->nodev_timeout_evt.evt_listp);
INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
init_timer(&ndlp->nlp_tmofunc);
ndlp->nlp_tmofunc.function = lpfc_nodev_timeout;
ndlp->nlp_tmofunc.data = (unsigned long)ndlp;
init_timer(&ndlp->nlp_delayfunc);
ndlp->nlp_delayfunc.function = lpfc_els_retry_delay;
ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
ndlp->nlp_DID = did;
ndlp->nlp_phba = phba;
ndlp->nlp_sid = NLP_NO_SID;
return;
}