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04c6849684
linux/drivers/scsi/lpfc/lpfc_hbadisc.c
James Smart 04c6849684 [SCSI] lpfc 8.3.2 : Addition of SLI4 Interface - Mailbox handling 
The mailbox commands themselves are the same, or very similar to
their SLI3 counterparts. This patch genericizes mailbox command
handling and adds support for the new SLI4 mailbox queue.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-06-08 11:24:50 -05:00

3333 lines
91 KiB
C
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/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2004-2008 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_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc_sli.h"
#include "lpfc_sli4.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_vport.h"
#include "lpfc_debugfs.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_vport *);
static void lpfc_disc_flush_list(struct lpfc_vport *vport);
void
lpfc_terminate_rport_io(struct fc_rport *rport)
{
struct lpfc_rport_data *rdata;
struct lpfc_nodelist * ndlp;
struct lpfc_hba *phba;
rdata = rport->dd_data;
ndlp = rdata->pnode;
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
if (rport->roles & FC_RPORT_ROLE_FCP_TARGET)
printk(KERN_ERR "Cannot find remote node"
" to terminate I/O Data x%x\n",
rport->port_id);
return;
}
phba = ndlp->phba;
lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
"rport terminate: sid:x%x did:x%x flg:x%x",
ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
if (ndlp->nlp_sid != NLP_NO_SID) {
lpfc_sli_abort_iocb(ndlp->vport,
&phba->sli.ring[phba->sli.fcp_ring],
ndlp->nlp_sid, 0, LPFC_CTX_TGT);
}
}
/*
* This function will be called when dev_loss_tmo fire.
*/
void
lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
{
struct lpfc_rport_data *rdata;
struct lpfc_nodelist * ndlp;
struct lpfc_vport *vport;
struct lpfc_hba *phba;
struct lpfc_work_evt *evtp;
int put_node;
int put_rport;
rdata = rport->dd_data;
ndlp = rdata->pnode;
if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
return;
vport = ndlp->vport;
phba = vport->phba;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
"rport devlosscb: sid:x%x did:x%x flg:x%x",
ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag);
/* Don't defer this if we are in the process of deleting the vport
* or unloading the driver. The unload will cleanup the node
* appropriately we just need to cleanup the ndlp rport info here.
*/
if (vport->load_flag & FC_UNLOADING) {
put_node = rdata->pnode != NULL;
put_rport = ndlp->rport != NULL;
rdata->pnode = NULL;
ndlp->rport = NULL;
if (put_node)
lpfc_nlp_put(ndlp);
if (put_rport)
put_device(&rport->dev);
return;
}
if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
return;
evtp = &ndlp->dev_loss_evt;
if (!list_empty(&evtp->evt_listp))
return;
spin_lock_irq(&phba->hbalock);
/* We need to hold the node by incrementing the reference
* count until this queued work is done
*/
evtp->evt_arg1 = lpfc_nlp_get(ndlp);
if (evtp->evt_arg1) {
evtp->evt = LPFC_EVT_DEV_LOSS;
list_add_tail(&evtp->evt_listp, &phba->work_list);
lpfc_worker_wake_up(phba);
}
spin_unlock_irq(&phba->hbalock);
return;
}
/*
* This function is called from the worker thread when dev_loss_tmo
* expire.
*/
static void
lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
{
struct lpfc_rport_data *rdata;
struct fc_rport *rport;
struct lpfc_vport *vport;
struct lpfc_hba *phba;
uint8_t *name;
int put_node;
int put_rport;
int warn_on = 0;
rport = ndlp->rport;
if (!rport)
return;
rdata = rport->dd_data;
name = (uint8_t *) &ndlp->nlp_portname;
vport = ndlp->vport;
phba = vport->phba;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
"rport devlosstmo:did:x%x type:x%x id:x%x",
ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id);
/* Don't defer this if we are in the process of deleting the vport
* or unloading the driver. The unload will cleanup the node
* appropriately we just need to cleanup the ndlp rport info here.
*/
if (vport->load_flag & FC_UNLOADING) {
if (ndlp->nlp_sid != NLP_NO_SID) {
/* flush the target */
lpfc_sli_abort_iocb(vport,
&phba->sli.ring[phba->sli.fcp_ring],
ndlp->nlp_sid, 0, LPFC_CTX_TGT);
}
put_node = rdata->pnode != NULL;
put_rport = ndlp->rport != NULL;
rdata->pnode = NULL;
ndlp->rport = NULL;
if (put_node)
lpfc_nlp_put(ndlp);
if (put_rport)
put_device(&rport->dev);
return;
}
if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0284 Devloss timeout Ignored on "
"WWPN %x:%x:%x:%x:%x:%x:%x:%x "
"NPort x%x\n",
*name, *(name+1), *(name+2), *(name+3),
*(name+4), *(name+5), *(name+6), *(name+7),
ndlp->nlp_DID);
return;
}
if (ndlp->nlp_type & NLP_FABRIC) {
/* We will clean up these Nodes in linkup */
put_node = rdata->pnode != NULL;
put_rport = ndlp->rport != NULL;
rdata->pnode = NULL;
ndlp->rport = NULL;
if (put_node)
lpfc_nlp_put(ndlp);
if (put_rport)
put_device(&rport->dev);
return;
}
if (ndlp->nlp_sid != NLP_NO_SID) {
warn_on = 1;
/* flush the target */
lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
ndlp->nlp_sid, 0, LPFC_CTX_TGT);
}
if (warn_on) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0203 Devloss timeout on "
"WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
"NPort x%06x Data: x%x x%x x%x\n",
*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_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0204 Devloss timeout on "
"WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
"NPort x%06x Data: x%x x%x x%x\n",
*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);
}
put_node = rdata->pnode != NULL;
put_rport = ndlp->rport != NULL;
rdata->pnode = NULL;
ndlp->rport = NULL;
if (put_node)
lpfc_nlp_put(ndlp);
if (put_rport)
put_device(&rport->dev);
if (!(vport->load_flag & FC_UNLOADING) &&
!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
!(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
(ndlp->nlp_state != NLP_STE_UNMAPPED_NODE))
lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
}
/**
* lpfc_alloc_fast_evt - Allocates data structure for posting event
* @phba: Pointer to hba context object.
*
* This function is called from the functions which need to post
* events from interrupt context. This function allocates data
* structure required for posting event. It also keeps track of
* number of events pending and prevent event storm when there are
* too many events.
**/
struct lpfc_fast_path_event *
lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
struct lpfc_fast_path_event *ret;
/* If there are lot of fast event do not exhaust memory due to this */
if (atomic_read(&phba->fast_event_count) > LPFC_MAX_EVT_COUNT)
return NULL;
ret = kzalloc(sizeof(struct lpfc_fast_path_event),
GFP_ATOMIC);
if (ret)
atomic_inc(&phba->fast_event_count);
INIT_LIST_HEAD(&ret->work_evt.evt_listp);
ret->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
return ret;
}
/**
* lpfc_free_fast_evt - Frees event data structure
* @phba: Pointer to hba context object.
* @evt: Event object which need to be freed.
*
* This function frees the data structure required for posting
* events.
**/
void
lpfc_free_fast_evt(struct lpfc_hba *phba,
struct lpfc_fast_path_event *evt) {
atomic_dec(&phba->fast_event_count);
kfree(evt);
}
/**
* lpfc_send_fastpath_evt - Posts events generated from fast path
* @phba: Pointer to hba context object.
* @evtp: Event data structure.
*
* This function is called from worker thread, when the interrupt
* context need to post an event. This function posts the event
* to fc transport netlink interface.
**/
static void
lpfc_send_fastpath_evt(struct lpfc_hba *phba,
struct lpfc_work_evt *evtp)
{
unsigned long evt_category, evt_sub_category;
struct lpfc_fast_path_event *fast_evt_data;
char *evt_data;
uint32_t evt_data_size;
struct Scsi_Host *shost;
fast_evt_data = container_of(evtp, struct lpfc_fast_path_event,
work_evt);
evt_category = (unsigned long) fast_evt_data->un.fabric_evt.event_type;
evt_sub_category = (unsigned long) fast_evt_data->un.
fabric_evt.subcategory;
shost = lpfc_shost_from_vport(fast_evt_data->vport);
if (evt_category == FC_REG_FABRIC_EVENT) {
if (evt_sub_category == LPFC_EVENT_FCPRDCHKERR) {
evt_data = (char *) &fast_evt_data->un.read_check_error;
evt_data_size = sizeof(fast_evt_data->un.
read_check_error);
} else if ((evt_sub_category == LPFC_EVENT_FABRIC_BUSY) ||
(evt_sub_category == LPFC_EVENT_PORT_BUSY)) {
evt_data = (char *) &fast_evt_data->un.fabric_evt;
evt_data_size = sizeof(fast_evt_data->un.fabric_evt);
} else {
lpfc_free_fast_evt(phba, fast_evt_data);
return;
}
} else if (evt_category == FC_REG_SCSI_EVENT) {
switch (evt_sub_category) {
case LPFC_EVENT_QFULL:
case LPFC_EVENT_DEVBSY:
evt_data = (char *) &fast_evt_data->un.scsi_evt;
evt_data_size = sizeof(fast_evt_data->un.scsi_evt);
break;
case LPFC_EVENT_CHECK_COND:
evt_data = (char *) &fast_evt_data->un.check_cond_evt;
evt_data_size = sizeof(fast_evt_data->un.
check_cond_evt);
break;
case LPFC_EVENT_VARQUEDEPTH:
evt_data = (char *) &fast_evt_data->un.queue_depth_evt;
evt_data_size = sizeof(fast_evt_data->un.
queue_depth_evt);
break;
default:
lpfc_free_fast_evt(phba, fast_evt_data);
return;
}
} else {
lpfc_free_fast_evt(phba, fast_evt_data);
return;
}
fc_host_post_vendor_event(shost,
fc_get_event_number(),
evt_data_size,
evt_data,
LPFC_NL_VENDOR_ID);
lpfc_free_fast_evt(phba, fast_evt_data);
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->hbalock);
while (!list_empty(&phba->work_list)) {
list_remove_head((&phba->work_list), evtp, typeof(*evtp),
evt_listp);
spin_unlock_irq(&phba->hbalock);
free_evt = 1;
switch (evtp->evt) {
case LPFC_EVT_ELS_RETRY:
ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1);
lpfc_els_retry_delay_handler(ndlp);
free_evt = 0; /* evt is part of ndlp */
/* decrement the node reference count held
* for this queued work
*/
lpfc_nlp_put(ndlp);
break;
case LPFC_EVT_DEV_LOSS:
ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1);
lpfc_dev_loss_tmo_handler(ndlp);
free_evt = 0;
/* decrement the node reference count held for
* this queued work
*/
lpfc_nlp_put(ndlp);
break;
case LPFC_EVT_ONLINE:
if (phba->link_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_PREP:
if (phba->link_state >= LPFC_LINK_DOWN)
lpfc_offline_prep(phba);
*(int *)(evtp->evt_arg1) = 0;
complete((struct completion *)(evtp->evt_arg2));
break;
case LPFC_EVT_OFFLINE:
lpfc_offline(phba);
lpfc_sli_brdrestart(phba);
*(int *)(evtp->evt_arg1) =
lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY);
lpfc_unblock_mgmt_io(phba);
complete((struct completion *)(evtp->evt_arg2));
break;
case LPFC_EVT_WARM_START:
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);
lpfc_unblock_mgmt_io(phba);
complete((struct completion *)(evtp->evt_arg2));
break;
case LPFC_EVT_KILL:
lpfc_offline(phba);
*(int *)(evtp->evt_arg1)
= (phba->pport->stopped)
? 0 : lpfc_sli_brdkill(phba);
lpfc_unblock_mgmt_io(phba);
complete((struct completion *)(evtp->evt_arg2));
break;
case LPFC_EVT_FASTPATH_MGMT_EVT:
lpfc_send_fastpath_evt(phba, evtp);
free_evt = 0;
break;
}
if (free_evt)
kfree(evtp);
spin_lock_irq(&phba->hbalock);
}
spin_unlock_irq(&phba->hbalock);
}
static void
lpfc_work_done(struct lpfc_hba *phba)
{
struct lpfc_sli_ring *pring;
uint32_t ha_copy, status, control, work_port_events;
struct lpfc_vport **vports;
struct lpfc_vport *vport;
int i;
spin_lock_irq(&phba->hbalock);
ha_copy = phba->work_ha;
phba->work_ha = 0;
spin_unlock_irq(&phba->hbalock);
/* First, try to post the next mailbox command to SLI4 device */
if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
lpfc_sli4_post_async_mbox(phba);
if (ha_copy & HA_ERATT)
/* Handle the error attention event */
lpfc_handle_eratt(phba);
if (ha_copy & HA_MBATT)
lpfc_sli_handle_mb_event(phba);
if (ha_copy & HA_LATT)
lpfc_handle_latt(phba);
/* Process SLI4 events */
if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
if (phba->hba_flag & FCP_XRI_ABORT_EVENT)
lpfc_sli4_fcp_xri_abort_event_proc(phba);
if (phba->hba_flag & ELS_XRI_ABORT_EVENT)
lpfc_sli4_els_xri_abort_event_proc(phba);
if (phba->hba_flag & ASYNC_EVENT)
lpfc_sli4_async_event_proc(phba);
if (phba->hba_flag & HBA_POST_RECEIVE_BUFFER) {
spin_lock_irq(&phba->hbalock);
phba->hba_flag &= ~HBA_POST_RECEIVE_BUFFER;
spin_unlock_irq(&phba->hbalock);
lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
}
if (phba->hba_flag & HBA_RECEIVE_BUFFER)
lpfc_sli4_handle_received_buffer(phba);
}
vports = lpfc_create_vport_work_array(phba);
if (vports != NULL)
for (i = 0; i <= phba->max_vports; i++) {
/*
* We could have no vports in array if unloading, so if
* this happens then just use the pport
*/
if (vports[i] == NULL && i == 0)
vport = phba->pport;
else
vport = vports[i];
if (vport == NULL)
break;
spin_lock_irq(&vport->work_port_lock);
work_port_events = vport->work_port_events;
vport->work_port_events &= ~work_port_events;
spin_unlock_irq(&vport->work_port_lock);
if (work_port_events & WORKER_DISC_TMO)
lpfc_disc_timeout_handler(vport);
if (work_port_events & WORKER_ELS_TMO)
lpfc_els_timeout_handler(vport);
if (work_port_events & WORKER_HB_TMO)
lpfc_hb_timeout_handler(phba);
if (work_port_events & WORKER_MBOX_TMO)
lpfc_mbox_timeout_handler(phba);
if (work_port_events & WORKER_FABRIC_BLOCK_TMO)
lpfc_unblock_fabric_iocbs(phba);
if (work_port_events & WORKER_FDMI_TMO)
lpfc_fdmi_timeout_handler(vport);
if (work_port_events & WORKER_RAMP_DOWN_QUEUE)
lpfc_ramp_down_queue_handler(phba);
if (work_port_events & WORKER_RAMP_UP_QUEUE)
lpfc_ramp_up_queue_handler(phba);
}
lpfc_destroy_vport_work_array(phba, vports);
pring = &phba->sli.ring[LPFC_ELS_RING];
status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
status >>= (4*LPFC_ELS_RING);
if ((status & HA_RXMASK)
|| (pring->flag & LPFC_DEFERRED_RING_EVENT)) {
if (pring->flag & LPFC_STOP_IOCB_EVENT) {
pring->flag |= LPFC_DEFERRED_RING_EVENT;
/* Set the lpfc data pending flag */
set_bit(LPFC_DATA_READY, &phba->data_flags);
} else {
pring->flag &= ~LPFC_DEFERRED_RING_EVENT;
lpfc_sli_handle_slow_ring_event(phba, pring,
(status &
HA_RXMASK));
}
/*
* Turn on Ring interrupts
*/
if (phba->sli_rev <= LPFC_SLI_REV3) {
spin_lock_irq(&phba->hbalock);
control = readl(phba->HCregaddr);
if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) {
lpfc_debugfs_slow_ring_trc(phba,
"WRK Enable ring: cntl:x%x hacopy:x%x",
control, ha_copy, 0);
control |= (HC_R0INT_ENA << LPFC_ELS_RING);
writel(control, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
} else {
lpfc_debugfs_slow_ring_trc(phba,
"WRK Ring ok: cntl:x%x hacopy:x%x",
control, ha_copy, 0);
}
spin_unlock_irq(&phba->hbalock);
}
}
lpfc_work_list_done(phba);
}
int
lpfc_do_work(void *p)
{
struct lpfc_hba *phba = p;
int rc;
set_user_nice(current, -20);
phba->data_flags = 0;
while (!kthread_should_stop()) {
/* wait and check worker queue activities */
rc = wait_event_interruptible(phba->work_waitq,
(test_and_clear_bit(LPFC_DATA_READY,
&phba->data_flags)
|| kthread_should_stop()));
/* Signal wakeup shall terminate the worker thread */
if (rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
"0433 Wakeup on signal: rc=x%x\n", rc);
break;
}
/* Attend pending lpfc data processing */
lpfc_work_done(phba);
}
phba->worker_thread = NULL;
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"0432 Worker thread stopped.\n");
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;
unsigned long flags;
/*
* 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_ATOMIC);
if (!evtp)
return 0;
evtp->evt_arg1 = arg1;
evtp->evt_arg2 = arg2;
evtp->evt = evt;
spin_lock_irqsave(&phba->hbalock, flags);
list_add_tail(&evtp->evt_listp, &phba->work_list);
spin_unlock_irqrestore(&phba->hbalock, flags);
lpfc_worker_wake_up(phba);
return 1;
}
void
lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_nodelist *ndlp, *next_ndlp;
int rc;
list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
if (!NLP_CHK_NODE_ACT(ndlp))
continue;
if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
continue;
if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) ||
((vport->port_type == LPFC_NPIV_PORT) &&
(ndlp->nlp_DID == NameServer_DID)))
lpfc_unreg_rpi(vport, ndlp);
/* Leave Fabric nodes alone on link down */
if (!remove && ndlp->nlp_type & NLP_FABRIC)
continue;
rc = lpfc_disc_state_machine(vport, ndlp, NULL,
remove
? NLP_EVT_DEVICE_RM
: NLP_EVT_DEVICE_RECOVERY);
}
if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) {
lpfc_mbx_unreg_vpi(vport);
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
spin_unlock_irq(shost->host_lock);
}
}
void
lpfc_port_link_failure(struct lpfc_vport *vport)
{
/* Cleanup any outstanding RSCN activity */
lpfc_els_flush_rscn(vport);
/* Cleanup any outstanding ELS commands */
lpfc_els_flush_cmd(vport);
lpfc_cleanup_rpis(vport, 0);
/* Turn off discovery timer if its running */
lpfc_can_disctmo(vport);
}
void
lpfc_linkdown_port(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Link Down: state:x%x rtry:x%x flg:x%x",
vport->port_state, vport->fc_ns_retry, vport->fc_flag);
lpfc_port_link_failure(vport);
}
int
lpfc_linkdown(struct lpfc_hba *phba)
{
struct lpfc_vport *vport = phba->pport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_vport **vports;
LPFC_MBOXQ_t *mb;
int i;
if (phba->link_state == LPFC_LINK_DOWN)
return 0;
spin_lock_irq(&phba->hbalock);
if (phba->link_state > LPFC_LINK_DOWN) {
phba->link_state = LPFC_LINK_DOWN;
phba->pport->fc_flag &= ~FC_LBIT;
}
spin_unlock_irq(&phba->hbalock);
vports = lpfc_create_vport_work_array(phba);
if (vports != NULL)
for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
/* Issue a LINK DOWN event to all nodes */
lpfc_linkdown_port(vports[i]);
}
lpfc_destroy_vport_work_array(phba, vports);
/* Clean up any firmware default rpi's */
mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mb) {
lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb);
mb->vport = vport;
mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
== MBX_NOT_FINISHED) {
mempool_free(mb, phba->mbox_mem_pool);
}
}
/* Setup myDID for link up if we are in pt2pt mode */
if (phba->pport->fc_flag & FC_PT2PT) {
phba->pport->fc_myDID = 0;
mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mb) {
lpfc_config_link(phba, mb);
mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mb->vport = vport;
if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT)
== MBX_NOT_FINISHED) {
mempool_free(mb, phba->mbox_mem_pool);
}
}
spin_lock_irq(shost->host_lock);
phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI);
spin_unlock_irq(shost->host_lock);
}
return 0;
}
static void
lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport)
{
struct lpfc_nodelist *ndlp;
list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
if (!NLP_CHK_NODE_ACT(ndlp))
continue;
if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
continue;
if (ndlp->nlp_type & NLP_FABRIC) {
/* On Linkup its safe to clean up the ndlp
* from Fabric connections.
*/
if (ndlp->nlp_DID != Fabric_DID)
lpfc_unreg_rpi(vport, ndlp);
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
} else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
/* Fail outstanding IO now since device is
* marked for PLOGI.
*/
lpfc_unreg_rpi(vport, ndlp);
}
}
}
static void
lpfc_linkup_port(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
if ((vport->load_flag & FC_UNLOADING) != 0)
return;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"Link Up: top:x%x speed:x%x flg:x%x",
phba->fc_topology, phba->fc_linkspeed, phba->link_flag);
/* If NPIV is not enabled, only bring the physical port up */
if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
(vport != phba->pport))
return;
fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0);
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY |
FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY);
vport->fc_flag |= FC_NDISC_ACTIVE;
vport->fc_ns_retry = 0;
spin_unlock_irq(shost->host_lock);
if (vport->fc_flag & FC_LBIT)
lpfc_linkup_cleanup_nodes(vport);
}
static int
lpfc_linkup(struct lpfc_hba *phba)
{
struct lpfc_vport **vports;
int i;
phba->link_state = LPFC_LINK_UP;
/* Unblock fabric iocbs if they are blocked */
clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
del_timer_sync(&phba->fabric_block_timer);
vports = lpfc_create_vport_work_array(phba);
if (vports != NULL)
for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
lpfc_linkup_port(vports[i]);
lpfc_destroy_vport_work_array(phba, vports);
if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
lpfc_issue_clear_la(phba, phba->pport);
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.
*/
static void
lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
struct lpfc_vport *vport = pmb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_sli *psli = &phba->sli;
MAILBOX_t *mb = &pmb->u.mb;
uint32_t control;
/* Since we don't do discovery right now, turn these off here */
psli->ring[psli->extra_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_vlog(vport, KERN_ERR, LOG_MBOX,
"0320 CLEAR_LA mbxStatus error x%x hba "
"state x%x\n",
mb->mbxStatus, vport->port_state);
phba->link_state = LPFC_HBA_ERROR;
goto out;
}
if (vport->port_type == LPFC_PHYSICAL_PORT)
phba->link_state = LPFC_HBA_READY;
spin_lock_irq(&phba->hbalock);
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->hbalock);
mempool_free(pmb, phba->mbox_mem_pool);
return;
out:
/* Device Discovery completes */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0225 Device Discovery completes\n");
mempool_free(pmb, phba->mbox_mem_pool);
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_ABORT_DISCOVERY;
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
/* turn on Link Attention interrupts */
spin_lock_irq(&phba->hbalock);
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->hbalock);
return;
}
static void
lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
struct lpfc_vport *vport = pmb->vport;
if (pmb->u.mb.mbxStatus)
goto out;
mempool_free(pmb, phba->mbox_mem_pool);
if (phba->fc_topology == TOPOLOGY_LOOP &&
vport->fc_flag & FC_PUBLIC_LOOP &&
!(vport->fc_flag & FC_LBIT)) {
/* Need to wait for FAN - use discovery timer
* for timeout. port_state is identically
* LPFC_LOCAL_CFG_LINK while waiting for FAN
*/
lpfc_set_disctmo(vport);
return;
}
/* Start discovery by sending a FLOGI. port_state is identically
* LPFC_FLOGI while waiting for FLOGI cmpl
*/
if (vport->port_state != LPFC_FLOGI) {
lpfc_initial_flogi(vport);
}
return;
out:
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
"0306 CONFIG_LINK mbxStatus error x%x "
"HBA state x%x\n",
pmb->u.mb.mbxStatus, vport->port_state);
mempool_free(pmb, phba->mbox_mem_pool);
lpfc_linkdown(phba);
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0200 CONFIG_LINK bad hba state x%x\n",
vport->port_state);
lpfc_issue_clear_la(phba, vport);
return;
}
static void
lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
MAILBOX_t *mb = &pmb->mb;
struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1;
struct lpfc_vport *vport = pmb->vport;
/* Check for error */
if (mb->mbxStatus) {
/* READ_SPARAM mbox error <mbxStatus> state <hba_state> */
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
"0319 READ_SPARAM mbxStatus error x%x "
"hba state x%x>\n",
mb->mbxStatus, vport->port_state);
lpfc_linkdown(phba);
goto out;
}
memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt,
sizeof (struct serv_parm));
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(vport->fc_nodename));
memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
sizeof(vport->fc_portname));
if (vport->port_type == LPFC_PHYSICAL_PORT) {
memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn));
memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn));
}
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);
lpfc_issue_clear_la(phba, vport);
mempool_free(pmb, phba->mbox_mem_pool);
return;
}
static void
lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
{
struct lpfc_vport *vport = phba->pport;
LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
int i;
struct lpfc_dmabuf *mp;
int rc;
sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
spin_lock_irq(&phba->hbalock);
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;
case LA_8GHZ_LINK:
phba->fc_linkspeed = LA_8GHZ_LINK;
break;
default:
phba->fc_linkspeed = LA_UNKNW_LINK;
break;
}
phba->fc_topology = la->topology;
phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
if (phba->fc_topology == TOPOLOGY_LOOP) {
phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
if (phba->cfg_enable_npiv)
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
"1309 Link Up Event npiv not supported in loop "
"topology\n");
/* Get Loop Map information */
if (la->il)
vport->fc_flag |= FC_LBIT;
vport->fc_myDID = la->granted_AL_PA;
i = la->un.lilpBde64.tus.f.bdeSize;
if (i == 0) {
phba->alpa_map[0] = 0;
} else {
if (vport->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,
"1304 Link Up Event "
"ALPA map Data: x%x "
"x%x x%x x%x\n",
un.pa.wd1, un.pa.wd2,
un.pa.wd3, un.pa.wd4);
}
}
}
} else {
if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
if (phba->max_vpi && phba->cfg_enable_npiv &&
(phba->sli_rev == 3))
phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
}
vport->fc_myDID = phba->fc_pref_DID;
vport->fc_flag |= FC_LBIT;
}
spin_unlock_irq(&phba->hbalock);
lpfc_linkup(phba);
if (sparam_mbox) {
lpfc_read_sparam(phba, sparam_mbox, 0);
sparam_mbox->vport = vport;
sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free(sparam_mbox, phba->mbox_mem_pool);
if (cfglink_mbox)
mempool_free(cfglink_mbox, phba->mbox_mem_pool);
goto out;
}
}
if (cfglink_mbox) {
vport->port_state = LPFC_LOCAL_CFG_LINK;
lpfc_config_link(phba, cfglink_mbox);
cfglink_mbox->vport = vport;
cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT);
if (rc != MBX_NOT_FINISHED)
return;
mempool_free(cfglink_mbox, phba->mbox_mem_pool);
}
out:
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
"0263 Discovery Mailbox error: state: 0x%x : %p %p\n",
vport->port_state, sparam_mbox, cfglink_mbox);
lpfc_issue_clear_la(phba, vport);
return;
}
static void
lpfc_enable_la(struct lpfc_hba *phba)
{
uint32_t control;
struct lpfc_sli *psli = &phba->sli;
spin_lock_irq(&phba->hbalock);
psli->sli_flag |= LPFC_PROCESS_LA;
if (phba->sli_rev <= LPFC_SLI_REV3) {
control = readl(phba->HCregaddr);
control |= HC_LAINT_ENA;
writel(control, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
}
spin_unlock_irq(&phba->hbalock);
}
static void
lpfc_mbx_issue_link_down(struct lpfc_hba *phba)
{
lpfc_linkdown(phba);
lpfc_enable_la(phba);
/* turn on Link Attention interrupts - no CLEAR_LA needed */
}
/*
* 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)
{
struct lpfc_vport *vport = pmb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
READ_LA_VAR *la;
MAILBOX_t *mb = &pmb->u.mb;
struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
/* Unblock ELS traffic */
phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
/* Check for error */
if (mb->mbxStatus) {
lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
"1307 READ_LA mbox error x%x state x%x\n",
mb->mbxStatus, vport->port_state);
lpfc_mbx_issue_link_down(phba);
phba->link_state = LPFC_HBA_ERROR;
goto lpfc_mbx_cmpl_read_la_free_mbuf;
}
la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
memcpy(&phba->alpa_map[0], mp->virt, 128);
spin_lock_irq(shost->host_lock);
if (la->pb)
vport->fc_flag |= FC_BYPASSED_MODE;
else
vport->fc_flag &= ~FC_BYPASSED_MODE;
spin_unlock_irq(shost->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->mm)
phba->sli.sli_flag |= LPFC_MENLO_MAINT;
else
phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
if (la->attType == AT_LINK_UP && (!la->mm)) {
phba->fc_stat.LinkUp++;
if (phba->link_flag & LS_LOOPBACK_MODE) {
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
"1306 Link Up Event in loop back mode "
"x%x received Data: x%x x%x x%x x%x\n",
la->eventTag, phba->fc_eventTag,
la->granted_AL_PA, la->UlnkSpeed,
phba->alpa_map[0]);
} else {
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
"1303 Link Up Event x%x received "
"Data: x%x x%x x%x x%x x%x x%x %d\n",
la->eventTag, phba->fc_eventTag,
la->granted_AL_PA, la->UlnkSpeed,
phba->alpa_map[0],
la->mm, la->fa,
phba->wait_4_mlo_maint_flg);
}
lpfc_mbx_process_link_up(phba, la);
} else if (la->attType == AT_LINK_DOWN) {
phba->fc_stat.LinkDown++;
if (phba->link_flag & LS_LOOPBACK_MODE) {
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
"1308 Link Down Event in loop back mode "
"x%x received "
"Data: x%x x%x x%x\n",
la->eventTag, phba->fc_eventTag,
phba->pport->port_state, vport->fc_flag);
}
else {
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
"1305 Link Down Event x%x received "
"Data: x%x x%x x%x x%x x%x\n",
la->eventTag, phba->fc_eventTag,
phba->pport->port_state, vport->fc_flag,
la->mm, la->fa);
}
lpfc_mbx_issue_link_down(phba);
}
if (la->mm && la->attType == AT_LINK_UP) {
if (phba->link_state != LPFC_LINK_DOWN) {
phba->fc_stat.LinkDown++;
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
"1312 Link Down Event x%x received "
"Data: x%x x%x x%x\n",
la->eventTag, phba->fc_eventTag,
phba->pport->port_state, vport->fc_flag);
lpfc_mbx_issue_link_down(phba);
} else
lpfc_enable_la(phba);
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
"1310 Menlo Maint Mode Link up Event x%x rcvd "
"Data: x%x x%x x%x\n",
la->eventTag, phba->fc_eventTag,
phba->pport->port_state, vport->fc_flag);
/*
* The cmnd that triggered this will be waiting for this
* signal.
*/
/* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */
if (phba->wait_4_mlo_maint_flg) {
phba->wait_4_mlo_maint_flg = 0;
wake_up_interruptible(&phba->wait_4_mlo_m_q);
}
}
if (la->fa) {
if (la->mm)
lpfc_issue_clear_la(phba, vport);
lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
"1311 fa %d\n", la->fa);
}
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_vport *vport = pmb->vport;
struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
pmb->context1 = NULL;
/* Good status, call state machine */
lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN);
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free(pmb, phba->mbox_mem_pool);
/* decrement the node reference count held for this callback
* function.
*/
lpfc_nlp_put(ndlp);
return;
}
static void
lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
MAILBOX_t *mb = &pmb->u.mb;
struct lpfc_vport *vport = pmb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
switch (mb->mbxStatus) {
case 0x0011:
case 0x0020:
case 0x9700:
lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
"0911 cmpl_unreg_vpi, mb status = 0x%x\n",
mb->mbxStatus);
break;
}
vport->unreg_vpi_cmpl = VPORT_OK;
mempool_free(pmb, phba->mbox_mem_pool);
/*
* This shost reference might have been taken at the beginning of
* lpfc_vport_delete()
*/
if (vport->load_flag & FC_UNLOADING)
scsi_host_put(shost);
}
int
lpfc_mbx_unreg_vpi(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox;
int rc;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return 1;
lpfc_unreg_vpi(phba, vport->vpi, mbox);
mbox->vport = vport;
mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
"1800 Could not issue unreg_vpi\n");
mempool_free(mbox, phba->mbox_mem_pool);
vport->unreg_vpi_cmpl = VPORT_ERROR;
return rc;
}
return 0;
}
static void
lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
struct lpfc_vport *vport = pmb->vport;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
MAILBOX_t *mb = &pmb->u.mb;
switch (mb->mbxStatus) {
case 0x0011:
case 0x9601:
case 0x9602:
lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
"0912 cmpl_reg_vpi, mb status = 0x%x\n",
mb->mbxStatus);
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
spin_unlock_irq(shost->host_lock);
vport->fc_myDID = 0;
goto out;
}
vport->num_disc_nodes = 0;
/* go thru NPR list and issue ELS PLOGIs */
if (vport->fc_npr_cnt)
lpfc_els_disc_plogi(vport);
if (!vport->num_disc_nodes) {
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_NDISC_ACTIVE;
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
}
vport->port_state = LPFC_VPORT_READY;
out:
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_vport *vport = pmb->vport;
MAILBOX_t *mb = &pmb->mb;
struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
struct lpfc_nodelist *ndlp;
struct lpfc_vport **vports;
int i;
ndlp = (struct lpfc_nodelist *) pmb->context2;
pmb->context1 = NULL;
pmb->context2 = NULL;
if (mb->mbxStatus) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free(pmb, phba->mbox_mem_pool);
if (phba->fc_topology == TOPOLOGY_LOOP) {
/* FLOGI failed, use loop map to make discovery list */
lpfc_disc_list_loopmap(vport);
/* Start discovery */
lpfc_disc_start(vport);
/* Decrement the reference count to ndlp after the
* reference to the ndlp are done.
*/
lpfc_nlp_put(ndlp);
return;
}
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
"0258 Register Fabric login error: 0x%x\n",
mb->mbxStatus);
/* Decrement the reference count to ndlp after the reference
* to the ndlp are done.
*/
lpfc_nlp_put(ndlp);
return;
}
ndlp->nlp_rpi = mb->un.varWords[0];
ndlp->nlp_type |= NLP_FABRIC;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
if (vport->port_state == LPFC_FABRIC_CFG_LINK) {
vports = lpfc_create_vport_work_array(phba);
if (vports != NULL)
for(i = 0;
i <= phba->max_vpi && vports[i] != NULL;
i++) {
if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
continue;
if (phba->fc_topology == TOPOLOGY_LOOP) {
lpfc_vport_set_state(vports[i],
FC_VPORT_LINKDOWN);
continue;
}
if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
lpfc_initial_fdisc(vports[i]);
else {
lpfc_vport_set_state(vports[i],
FC_VPORT_NO_FABRIC_SUPP);
lpfc_printf_vlog(vport, KERN_ERR,
LOG_ELS,
"0259 No NPIV "
"Fabric support\n");
}
}
lpfc_destroy_vport_work_array(phba, vports);
lpfc_do_scr_ns_plogi(phba, vport);
}
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free(pmb, phba->mbox_mem_pool);
/* Drop the reference count from the mbox at the end after
* all the current reference to the ndlp have been done.
*/
lpfc_nlp_put(ndlp);
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)
{
MAILBOX_t *mb = &pmb->mb;
struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
struct lpfc_vport *vport = pmb->vport;
if (mb->mbxStatus) {
out:
/* decrement the node reference count held for this
* callback function.
*/
lpfc_nlp_put(ndlp);
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free(pmb, phba->mbox_mem_pool);
/* If no other thread is using the ndlp, free it */
lpfc_nlp_not_used(ndlp);
if (phba->fc_topology == TOPOLOGY_LOOP) {
/*
* RegLogin failed, use loop map to make discovery
* list
*/
lpfc_disc_list_loopmap(vport);
/* Start discovery */
lpfc_disc_start(vport);
return;
}
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0260 Register NameServer error: 0x%x\n",
mb->mbxStatus);
return;
}
pmb->context1 = NULL;
ndlp->nlp_rpi = mb->un.varWords[0];
ndlp->nlp_type |= NLP_FABRIC;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
if (vport->port_state < LPFC_VPORT_READY) {
/* Link up discovery requires Fabric registration. */
lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
/* Issue SCR just before NameServer GID_FT Query */
lpfc_issue_els_scr(vport, SCR_DID, 0);
}
vport->fc_ns_retry = 0;
/* Good status, issue CT Request to NameServer */
if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) {
/* Cannot issue NameServer Query, so finish up discovery */
goto out;
}
/* decrement the node reference count held for this
* callback function.
*/
lpfc_nlp_put(ndlp);
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_vport *vport, struct lpfc_nodelist *ndlp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct fc_rport *rport;
struct lpfc_rport_data *rdata;
struct fc_rport_identifiers rport_ids;
struct lpfc_hba *phba = vport->phba;
/* 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;
/*
* We leave our node pointer in rport->dd_data when we unregister a
* FCP target port. But fc_remote_port_add zeros the space to which
* rport->dd_data points. So, if we're reusing a previously
* registered port, drop the reference that we took the last time we
* registered the port.
*/
if (ndlp->rport && ndlp->rport->dd_data &&
((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
lpfc_nlp_put(ndlp);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
"rport add: did:x%x flg:x%x type x%x",
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids);
if (!rport || !get_device(&rport->dev)) {
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 = lpfc_nlp_get(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_nodelist *ndlp)
{
struct fc_rport *rport = ndlp->rport;
lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
"rport delete: did:x%x flg:x%x type x%x",
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
fc_remote_port_delete(rport);
return;
}
static void
lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
spin_lock_irq(shost->host_lock);
switch (state) {
case NLP_STE_UNUSED_NODE:
vport->fc_unused_cnt += count;
break;
case NLP_STE_PLOGI_ISSUE:
vport->fc_plogi_cnt += count;
break;
case NLP_STE_ADISC_ISSUE:
vport->fc_adisc_cnt += count;
break;
case NLP_STE_REG_LOGIN_ISSUE:
vport->fc_reglogin_cnt += count;
break;
case NLP_STE_PRLI_ISSUE:
vport->fc_prli_cnt += count;
break;
case NLP_STE_UNMAPPED_NODE:
vport->fc_unmap_cnt += count;
break;
case NLP_STE_MAPPED_NODE:
vport->fc_map_cnt += count;
break;
case NLP_STE_NPR_NODE:
vport->fc_npr_cnt += count;
break;
}
spin_unlock_irq(shost->host_lock);
}
static void
lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
int old_state, int new_state)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
if (new_state == NLP_STE_UNMAPPED_NODE) {
ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
ndlp->nlp_type |= NLP_FC_NODE;
}
if (new_state == NLP_STE_MAPPED_NODE)
ndlp->nlp_flag &= ~NLP_NODEV_REMOVE;
if (new_state == NLP_STE_NPR_NODE)
ndlp->nlp_flag &= ~NLP_RCV_PLOGI;
/* Transport interface */
if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE ||
old_state == NLP_STE_UNMAPPED_NODE)) {
vport->phba->nport_event_cnt++;
lpfc_unregister_remote_port(ndlp);
}
if (new_state == NLP_STE_MAPPED_NODE ||
new_state == NLP_STE_UNMAPPED_NODE) {
vport->phba->nport_event_cnt++;
/*
* 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
*/
lpfc_register_remote_port(vport, ndlp);
}
if ((new_state == NLP_STE_MAPPED_NODE) &&
(vport->stat_data_enabled)) {
/*
* A new target is discovered, if there is no buffer for
* statistical data collection allocate buffer.
*/
ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
sizeof(struct lpfc_scsicmd_bkt),
GFP_KERNEL);
if (!ndlp->lat_data)
lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
"0286 lpfc_nlp_state_cleanup failed to "
"allocate statistical data buffer DID "
"0x%x\n", ndlp->nlp_DID);
}
/*
* 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 (new_state == NLP_STE_MAPPED_NODE &&
(!ndlp->rport ||
ndlp->rport->scsi_target_id == -1 ||
ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_TGT_NO_SCSIID;
spin_unlock_irq(shost->host_lock);
lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
}
}
static char *
lpfc_nlp_state_name(char *buffer, size_t size, int state)
{
static char *states[] = {
[NLP_STE_UNUSED_NODE] = "UNUSED",
[NLP_STE_PLOGI_ISSUE] = "PLOGI",
[NLP_STE_ADISC_ISSUE] = "ADISC",
[NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN",
[NLP_STE_PRLI_ISSUE] = "PRLI",
[NLP_STE_UNMAPPED_NODE] = "UNMAPPED",
[NLP_STE_MAPPED_NODE] = "MAPPED",
[NLP_STE_NPR_NODE] = "NPR",
};
if (state < NLP_STE_MAX_STATE && states[state])
strlcpy(buffer, states[state], size);
else
snprintf(buffer, size, "unknown (%d)", state);
return buffer;
}
void
lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
int state)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
int old_state = ndlp->nlp_state;
char name1[16], name2[16];
lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
"0904 NPort state transition x%06x, %s -> %s\n",
ndlp->nlp_DID,
lpfc_nlp_state_name(name1, sizeof(name1), old_state),
lpfc_nlp_state_name(name2, sizeof(name2), state));
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
"node statechg did:x%x old:%d ste:%d",
ndlp->nlp_DID, old_state, state);
if (old_state == NLP_STE_NPR_NODE &&
state != NLP_STE_NPR_NODE)
lpfc_cancel_retry_delay_tmo(vport, ndlp);
if (old_state == NLP_STE_UNMAPPED_NODE) {
ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID;
ndlp->nlp_type &= ~NLP_FC_NODE;
}
if (list_empty(&ndlp->nlp_listp)) {
spin_lock_irq(shost->host_lock);
list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
spin_unlock_irq(shost->host_lock);
} else if (old_state)
lpfc_nlp_counters(vport, old_state, -1);
ndlp->nlp_state = state;
lpfc_nlp_counters(vport, state, 1);
lpfc_nlp_state_cleanup(vport, ndlp, old_state, state);
}
void
lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
if (list_empty(&ndlp->nlp_listp)) {
spin_lock_irq(shost->host_lock);
list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes);
spin_unlock_irq(shost->host_lock);
}
}
void
lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
lpfc_cancel_retry_delay_tmo(vport, ndlp);
if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
spin_lock_irq(shost->host_lock);
list_del_init(&ndlp->nlp_listp);
spin_unlock_irq(shost->host_lock);
lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
NLP_STE_UNUSED_NODE);
}
static void
lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
lpfc_cancel_retry_delay_tmo(vport, ndlp);
if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp))
lpfc_nlp_counters(vport, ndlp->nlp_state, -1);
lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state,
NLP_STE_UNUSED_NODE);
}
/**
* lpfc_initialize_node - Initialize all fields of node object
* @vport: Pointer to Virtual Port object.
* @ndlp: Pointer to FC node object.
* @did: FC_ID of the node.
*
* This function is always called when node object need to be initialized.
* It initializes all the fields of the node object. Although the reference
* to phba from @ndlp can be obtained indirectly through it's reference to
* @vport, a direct reference to phba is taken here by @ndlp. This is due
* to the life-span of the @ndlp might go beyond the existence of @vport as
* the final release of ndlp is determined by its reference count. And, the
* operation on @ndlp needs the reference to phba.
**/
static inline void
lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint32_t did)
{
INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp);
INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp);
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->vport = vport;
ndlp->phba = vport->phba;
ndlp->nlp_sid = NLP_NO_SID;
kref_init(&ndlp->kref);
NLP_INT_NODE_ACT(ndlp);
atomic_set(&ndlp->cmd_pending, 0);
ndlp->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
}
struct lpfc_nodelist *
lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
int state)
{
struct lpfc_hba *phba = vport->phba;
uint32_t did;
unsigned long flags;
if (!ndlp)
return NULL;
spin_lock_irqsave(&phba->ndlp_lock, flags);
/* The ndlp should not be in memory free mode */
if (NLP_CHK_FREE_REQ(ndlp)) {
spin_unlock_irqrestore(&phba->ndlp_lock, flags);
lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
"0277 lpfc_enable_node: ndlp:x%p "
"usgmap:x%x refcnt:%d\n",
(void *)ndlp, ndlp->nlp_usg_map,
atomic_read(&ndlp->kref.refcount));
return NULL;
}
/* The ndlp should not already be in active mode */
if (NLP_CHK_NODE_ACT(ndlp)) {
spin_unlock_irqrestore(&phba->ndlp_lock, flags);
lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
"0278 lpfc_enable_node: ndlp:x%p "
"usgmap:x%x refcnt:%d\n",
(void *)ndlp, ndlp->nlp_usg_map,
atomic_read(&ndlp->kref.refcount));
return NULL;
}
/* Keep the original DID */
did = ndlp->nlp_DID;
/* re-initialize ndlp except of ndlp linked list pointer */
memset((((char *)ndlp) + sizeof (struct list_head)), 0,
sizeof (struct lpfc_nodelist) - sizeof (struct list_head));
lpfc_initialize_node(vport, ndlp, did);
spin_unlock_irqrestore(&phba->ndlp_lock, flags);
if (state != NLP_STE_UNUSED_NODE)
lpfc_nlp_set_state(vport, ndlp, state);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
"node enable: did:x%x",
ndlp->nlp_DID, 0, 0);
return ndlp;
}
void
lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
/*
* Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should
* be used if we wish to issue the "last" lpfc_nlp_put() to remove
* the ndlp from the vport. The ndlp marked as UNUSED on the list
* until ALL other outstanding threads have completed. We check
* that the ndlp not already in the UNUSED state before we proceed.
*/
if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
return;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE);
lpfc_nlp_put(ndlp);
return;
}
/*
* Start / ReStart rescue timer for Discovery / RSCN handling
*/
void
lpfc_set_disctmo(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
uint32_t tmo;
if (vport->port_state == LPFC_LOCAL_CFG_LINK) {
/* For FAN, timeout should be greater than edtov */
tmo = (((phba->fc_edtov + 999) / 1000) + 1);
} else {
/* Normal discovery timeout should be > than ELS/CT timeout
* FC spec states we need 3 * ratov for CT requests
*/
tmo = ((phba->fc_ratov * 3) + 3);
}
if (!timer_pending(&vport->fc_disctmo)) {
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"set disc timer: tmo:x%x state:x%x flg:x%x",
tmo, vport->port_state, vport->fc_flag);
}
mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo);
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_DISC_TMO;
spin_unlock_irq(shost->host_lock);
/* Start Discovery Timer state <hba_state> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0247 Start Discovery Timer state x%x "
"Data: x%x x%lx x%x x%x\n",
vport->port_state, tmo,
(unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt,
vport->fc_adisc_cnt);
return;
}
/*
* Cancel rescue timer for Discovery / RSCN handling
*/
int
lpfc_can_disctmo(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
unsigned long iflags;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"can disc timer: state:x%x rtry:x%x flg:x%x",
vport->port_state, vport->fc_ns_retry, vport->fc_flag);
/* Turn off discovery timer if its running */
if (vport->fc_flag & FC_DISC_TMO) {
spin_lock_irqsave(shost->host_lock, iflags);
vport->fc_flag &= ~FC_DISC_TMO;
spin_unlock_irqrestore(shost->host_lock, iflags);
del_timer_sync(&vport->fc_disctmo);
spin_lock_irqsave(&vport->work_port_lock, iflags);
vport->work_port_events &= ~WORKER_DISC_TMO;
spin_unlock_irqrestore(&vport->work_port_lock, iflags);
}
/* Cancel Discovery Timer state <hba_state> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0248 Cancel Discovery Timer state x%x "
"Data: x%x x%x x%x\n",
vport->port_state, vport->fc_flag,
vport->fc_plogi_cnt, vport->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 = &phba->sli;
IOCB_t *icmd = &iocb->iocb;
struct lpfc_vport *vport = ndlp->vport;
if (iocb->vport != vport)
return 0;
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->extra_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)
{
LIST_HEAD(completions);
struct lpfc_sli *psli;
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *iocb, *next_iocb;
uint32_t rpi, i;
lpfc_fabric_abort_nport(ndlp);
/*
* 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->hbalock);
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_move_tail(&iocb->list,
&completions);
pring->txq_cnt--;
}
}
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);
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_vport *vport, struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox;
int rc;
if (ndlp->nlp_rpi) {
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mbox) {
lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox);
mbox->vport = vport;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
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;
}
void
lpfc_unreg_all_rpis(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox;
int rc;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mbox) {
lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox);
mbox->vport = vport;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mbox->context1 = NULL;
rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
if (rc != MBX_TIMEOUT)
mempool_free(mbox, phba->mbox_mem_pool);
if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
"1836 Could not issue "
"unreg_login(all_rpis) status %d\n", rc);
}
}
void
lpfc_unreg_default_rpis(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox;
int rc;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mbox) {
lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox);
mbox->vport = vport;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mbox->context1 = NULL;
rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
if (rc != MBX_TIMEOUT)
mempool_free(mbox, phba->mbox_mem_pool);
if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
"1815 Could not issue "
"unreg_did (default rpis) status %d\n",
rc);
}
}
/*
* Free resources associated with LPFC_NODELIST entry
* so it can be freed.
*/
static int
lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mb, *nextmb;
struct lpfc_dmabuf *mp;
/* Cleanup node for NPort <nlp_DID> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
"0900 Cleanup node for NPort x%x "
"Data: x%x x%x x%x\n",
ndlp->nlp_DID, ndlp->nlp_flag,
ndlp->nlp_state, ndlp->nlp_rpi);
if (NLP_CHK_FREE_REQ(ndlp)) {
lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
"0280 lpfc_cleanup_node: ndlp:x%p "
"usgmap:x%x refcnt:%d\n",
(void *)ndlp, ndlp->nlp_usg_map,
atomic_read(&ndlp->kref.refcount));
lpfc_dequeue_node(vport, ndlp);
} else {
lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
"0281 lpfc_cleanup_node: ndlp:x%p "
"usgmap:x%x refcnt:%d\n",
(void *)ndlp, ndlp->nlp_usg_map,
atomic_read(&ndlp->kref.refcount));
lpfc_disable_node(vport, ndlp);
}
/* cleanup any ndlp on mbox q waiting for reglogin cmpl */
if ((mb = phba->sli.mbox_active)) {
if ((mb->u.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->hbalock);
list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
if ((mb->u.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);
/* We shall not invoke the lpfc_nlp_put to decrement
* the ndlp reference count as we are in the process
* of lpfc_nlp_release.
*/
}
}
spin_unlock_irq(&phba->hbalock);
lpfc_els_abort(phba, ndlp);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_DELAY_TMO;
spin_unlock_irq(shost->host_lock);
ndlp->nlp_last_elscmd = 0;
del_timer_sync(&ndlp->nlp_delayfunc);
list_del_init(&ndlp->els_retry_evt.evt_listp);
list_del_init(&ndlp->dev_loss_evt.evt_listp);
lpfc_unreg_rpi(vport, 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.
*/
static void
lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_rport_data *rdata;
LPFC_MBOXQ_t *mbox;
int rc;
lpfc_cancel_retry_delay_tmo(vport, ndlp);
if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) {
/* For this case we need to cleanup the default rpi
* allocated by the firmware.
*/
if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))
!= NULL) {
rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID,
(uint8_t *) &vport->fc_sparam, mbox, 0);
if (rc) {
mempool_free(mbox, phba->mbox_mem_pool);
}
else {
mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
mbox->vport = vport;
mbox->context2 = NULL;
rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
mempool_free(mbox, phba->mbox_mem_pool);
}
}
}
}
lpfc_cleanup_node(vport, ndlp);
/*
* We can get here with a non-NULL ndlp->rport because when we
* unregister a rport we don't break the rport/node linkage. So if we
* do, make sure we don't leaving any dangling pointers behind.
*/
if (ndlp->rport) {
rdata = ndlp->rport->dd_data;
rdata->pnode = NULL;
ndlp->rport = NULL;
}
}
static int
lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint32_t did)
{
D_ID mydid, ndlpdid, matchdid;
if (did == Bcast_DID)
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 = vport->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 */
static struct lpfc_nodelist *
__lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
{
struct lpfc_nodelist *ndlp;
uint32_t data1;
list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
if (lpfc_matchdid(vport, 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));
lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
"0929 FIND node DID "
"Data: x%p x%x x%x x%x\n",
ndlp, ndlp->nlp_DID,
ndlp->nlp_flag, data1);
return ndlp;
}
}
/* FIND node did <did> NOT FOUND */
lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
"0932 FIND node did x%x NOT FOUND.\n", did);
return NULL;
}
struct lpfc_nodelist *
lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_nodelist *ndlp;
spin_lock_irq(shost->host_lock);
ndlp = __lpfc_findnode_did(vport, did);
spin_unlock_irq(shost->host_lock);
return ndlp;
}
struct lpfc_nodelist *
lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_nodelist *ndlp;
ndlp = lpfc_findnode_did(vport, did);
if (!ndlp) {
if ((vport->fc_flag & FC_RSCN_MODE) != 0 &&
lpfc_rscn_payload_check(vport, did) == 0)
return NULL;
ndlp = (struct lpfc_nodelist *)
mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL);
if (!ndlp)
return NULL;
lpfc_nlp_init(vport, ndlp, did);
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irq(shost->host_lock);
return ndlp;
} else if (!NLP_CHK_NODE_ACT(ndlp)) {
ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE);
if (!ndlp)
return NULL;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irq(shost->host_lock);
return ndlp;
}
if ((vport->fc_flag & FC_RSCN_MODE) &&
!(vport->fc_flag & FC_NDISC_ACTIVE)) {
if (lpfc_rscn_payload_check(vport, did)) {
/* If we've already recieved a PLOGI from this NPort
* we don't need to try to discover it again.
*/
if (ndlp->nlp_flag & NLP_RCV_PLOGI)
return NULL;
/* Since this node is marked for discovery,
* delay timeout is not needed.
*/
lpfc_cancel_retry_delay_tmo(vport, ndlp);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irq(shost->host_lock);
} else
ndlp = NULL;
} else {
/* If we've already recieved a PLOGI from this NPort,
* or we are already in the process of discovery on it,
* we don't need to try to discover it again.
*/
if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE ||
ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
ndlp->nlp_flag & NLP_RCV_PLOGI)
return NULL;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_NPR_2B_DISC;
spin_unlock_irq(shost->host_lock);
}
return ndlp;
}
/* Build a list of nodes to discover based on the loopmap */
void
lpfc_disc_list_loopmap(struct lpfc_vport *vport)
{
struct lpfc_hba *phba = vport->phba;
int j;
uint32_t alpa, index;
if (!lpfc_is_link_up(phba))
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 (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0))
continue;
lpfc_setup_disc_node(vport, 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 (vport->cfg_scan_down)
index = j;
else
index = FC_MAXLOOP - j - 1;
alpa = lpfcAlpaArray[index];
if ((vport->fc_myDID & 0xff) == alpa)
continue;
lpfc_setup_disc_node(vport, alpa);
}
}
return;
}
void
lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport)
{
LPFC_MBOXQ_t *mbox;
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring];
struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring];
struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring];
int rc;
/*
* if it's not a physical port or if we already send
* clear_la then don't send it.
*/
if ((phba->link_state >= LPFC_CLEAR_LA) ||
(vport->port_type != LPFC_PHYSICAL_PORT) ||
(phba->sli_rev == LPFC_SLI_REV4))
return;
/* Link up discovery */
if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) {
phba->link_state = LPFC_CLEAR_LA;
lpfc_clear_la(phba, mbox);
mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
mbox->vport = vport;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
mempool_free(mbox, phba->mbox_mem_pool);
lpfc_disc_flush_list(vport);
extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
next_ring->flag &= ~LPFC_STOP_IOCB_EVENT;
phba->link_state = LPFC_HBA_ERROR;
}
}
}
/* Reg_vpi to tell firmware to resume normal operations */
void
lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport)
{
LPFC_MBOXQ_t *regvpimbox;
regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (regvpimbox) {
lpfc_reg_vpi(vport, regvpimbox);
regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi;
regvpimbox->vport = vport;
if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT)
== MBX_NOT_FINISHED) {
mempool_free(regvpimbox, phba->mbox_mem_pool);
}
}
}
/* Start Link up / RSCN discovery on NPR nodes */
void
lpfc_disc_start(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
uint32_t num_sent;
uint32_t clear_la_pending;
int did_changed;
if (!lpfc_is_link_up(phba))
return;
if (phba->link_state == LPFC_CLEAR_LA)
clear_la_pending = 1;
else
clear_la_pending = 0;
if (vport->port_state < LPFC_VPORT_READY)
vport->port_state = LPFC_DISC_AUTH;
lpfc_set_disctmo(vport);
if (vport->fc_prevDID == vport->fc_myDID)
did_changed = 0;
else
did_changed = 1;
vport->fc_prevDID = vport->fc_myDID;
vport->num_disc_nodes = 0;
/* Start Discovery state <hba_state> */
lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
"0202 Start Discovery hba state x%x "
"Data: x%x x%x x%x\n",
vport->port_state, vport->fc_flag, vport->fc_plogi_cnt,
vport->fc_adisc_cnt);
/* First do ADISCs - if any */
num_sent = lpfc_els_disc_adisc(vport);
if (num_sent)
return;
/*
* For SLI3, cmpl_reg_vpi will set port_state to READY, and
* continue discovery.
*/
if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
!(vport->fc_flag & FC_PT2PT) &&
!(vport->fc_flag & FC_RSCN_MODE) &&
(phba->sli_rev < LPFC_SLI_REV4)) {
lpfc_issue_reg_vpi(phba, vport);
return;
}
/*
* For SLI2, we need to set port_state to READY and continue
* discovery.
*/
if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) {
/* If we get here, there is nothing to ADISC */
if (vport->port_type == LPFC_PHYSICAL_PORT)
lpfc_issue_clear_la(phba, vport);
if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
vport->num_disc_nodes = 0;
/* go thru NPR nodes and issue ELS PLOGIs */
if (vport->fc_npr_cnt)
lpfc_els_disc_plogi(vport);
if (!vport->num_disc_nodes) {
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_NDISC_ACTIVE;
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
}
}
vport->port_state = LPFC_VPORT_READY;
} else {
/* Next do PLOGIs - if any */
num_sent = lpfc_els_disc_plogi(vport);
if (num_sent)
return;
if (vport->fc_flag & FC_RSCN_MODE) {
/* Check to see if more RSCNs came in while we
* were processing this one.
*/
if ((vport->fc_rscn_id_cnt == 0) &&
(!(vport->fc_flag & FC_RSCN_DISCOVERY))) {
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_RSCN_MODE;
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
} else
lpfc_els_handle_rscn(vport);
}
}
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)
{
LIST_HEAD(completions);
struct lpfc_sli *psli;
IOCB_t *icmd;
struct lpfc_iocbq *iocb, *next_iocb;
struct lpfc_sli_ring *pring;
psli = &phba->sli;
pring = &psli->ring[LPFC_ELS_RING];
/* Error matching iocb on txq or txcmplq
* First check the txq.
*/
spin_lock_irq(&phba->hbalock);
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_move_tail(&iocb->list, &completions);
pring->txq_cnt--;
}
}
/* 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) {
lpfc_sli_issue_abort_iotag(phba, pring, iocb);
}
}
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);
}
static void
lpfc_disc_flush_list(struct lpfc_vport *vport)
{
struct lpfc_nodelist *ndlp, *next_ndlp;
struct lpfc_hba *phba = vport->phba;
if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) {
list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
nlp_listp) {
if (!NLP_CHK_NODE_ACT(ndlp))
continue;
if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
ndlp->nlp_state == NLP_STE_ADISC_ISSUE) {
lpfc_free_tx(phba, ndlp);
}
}
}
}
void
lpfc_cleanup_discovery_resources(struct lpfc_vport *vport)
{
lpfc_els_flush_rscn(vport);
lpfc_els_flush_cmd(vport);
lpfc_disc_flush_list(vport);
}
/*****************************************************************************/
/*
* 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_vport *vport = (struct lpfc_vport *) ptr;
struct lpfc_hba *phba = vport->phba;
uint32_t tmo_posted;
unsigned long flags = 0;
if (unlikely(!phba))
return;
spin_lock_irqsave(&vport->work_port_lock, flags);
tmo_posted = vport->work_port_events & WORKER_DISC_TMO;
if (!tmo_posted)
vport->work_port_events |= WORKER_DISC_TMO;
spin_unlock_irqrestore(&vport->work_port_lock, flags);
if (!tmo_posted)
lpfc_worker_wake_up(phba);
return;
}
static void
lpfc_disc_timeout_handler(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_sli *psli = &phba->sli;
struct lpfc_nodelist *ndlp, *next_ndlp;
LPFC_MBOXQ_t *initlinkmbox;
int rc, clrlaerr = 0;
if (!(vport->fc_flag & FC_DISC_TMO))
return;
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_DISC_TMO;
spin_unlock_irq(shost->host_lock);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
"disc timeout: state:x%x rtry:x%x flg:x%x",
vport->port_state, vport->fc_ns_retry, vport->fc_flag);
switch (vport->port_state) {
case LPFC_LOCAL_CFG_LINK:
/* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for
* FAN
*/
/* FAN timeout */
lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY,
"0221 FAN timeout\n");
/* Start discovery by sending FLOGI, clean up old rpis */
list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes,
nlp_listp) {
if (!NLP_CHK_NODE_ACT(ndlp))
continue;
if (ndlp->nlp_state != NLP_STE_NPR_NODE)
continue;
if (ndlp->nlp_type & NLP_FABRIC) {
/* Clean up the ndlp on Fabric connections */
lpfc_drop_node(vport, ndlp);
} else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
/* Fail outstanding IO now since device
* is marked for PLOGI.
*/
lpfc_unreg_rpi(vport, ndlp);
}
}
if (vport->port_state != LPFC_FLOGI) {
lpfc_initial_flogi(vport);
return;
}
break;
case LPFC_FDISC:
case LPFC_FLOGI:
/* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */
/* Initial FLOGI timeout */
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0222 Initial %s timeout\n",
vport->vpi ? "FDISC" : "FLOGI");
/* 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(vport);
/* Start discovery */
lpfc_disc_start(vport);
break;
case LPFC_FABRIC_CFG_LINK:
/* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for
NameServer login */
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0223 Timeout while waiting for "
"NameServer login\n");
/* Next look for NameServer ndlp */
ndlp = lpfc_findnode_did(vport, NameServer_DID);
if (ndlp && NLP_CHK_NODE_ACT(ndlp))
lpfc_els_abort(phba, ndlp);
/* ReStart discovery */
goto restart_disc;
case LPFC_NS_QRY:
/* Check for wait for NameServer Rsp timeout */
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0224 NameServer Query timeout "
"Data: x%x x%x\n",
vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) {
/* Try it one more time */
vport->fc_ns_retry++;
rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT,
vport->fc_ns_retry, 0);
if (rc == 0)
break;
}
vport->fc_ns_retry = 0;
restart_disc:
/*
* Discovery is over.
* set port_state to PORT_READY if SLI2.
* cmpl_reg_vpi will set port_state to READY for SLI3.
*/
if (phba->sli_rev < LPFC_SLI_REV4) {
if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
lpfc_issue_reg_vpi(phba, vport);
else { /* NPIV Not enabled */
lpfc_issue_clear_la(phba, vport);
vport->port_state = LPFC_VPORT_READY;
}
}
/* Setup and issue mailbox INITIALIZE LINK command */
initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!initlinkmbox) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0206 Device Discovery "
"completion error\n");
phba->link_state = LPFC_HBA_ERROR;
break;
}
lpfc_linkdown(phba);
lpfc_init_link(phba, initlinkmbox, phba->cfg_topology,
phba->cfg_link_speed);
initlinkmbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
initlinkmbox->vport = vport;
initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT);
lpfc_set_loopback_flag(phba);
if (rc == MBX_NOT_FINISHED)
mempool_free(initlinkmbox, phba->mbox_mem_pool);
break;
case LPFC_DISC_AUTH:
/* Node Authentication timeout */
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0227 Node Authentication timeout\n");
lpfc_disc_flush_list(vport);
/*
* set port_state to PORT_READY if SLI2.
* cmpl_reg_vpi will set port_state to READY for SLI3.
*/
if (phba->sli_rev < LPFC_SLI_REV4) {
if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
lpfc_issue_reg_vpi(phba, vport);
else { /* NPIV Not enabled */
lpfc_issue_clear_la(phba, vport);
vport->port_state = LPFC_VPORT_READY;
}
}
break;
case LPFC_VPORT_READY:
if (vport->fc_flag & FC_RSCN_MODE) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0231 RSCN timeout Data: x%x "
"x%x\n",
vport->fc_ns_retry, LPFC_MAX_NS_RETRY);
/* Cleanup any outstanding ELS commands */
lpfc_els_flush_cmd(vport);
lpfc_els_flush_rscn(vport);
lpfc_disc_flush_list(vport);
}
break;
default:
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0273 Unexpected discovery timeout, "
"vport State x%x\n", vport->port_state);
break;
}
switch (phba->link_state) {
case LPFC_CLEAR_LA:
/* CLEAR LA timeout */
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0228 CLEAR LA timeout\n");
clrlaerr = 1;
break;
case LPFC_LINK_UP:
lpfc_issue_clear_la(phba, vport);
/* Drop thru */
case LPFC_LINK_UNKNOWN:
case LPFC_WARM_START:
case LPFC_INIT_START:
case LPFC_INIT_MBX_CMDS:
case LPFC_LINK_DOWN:
case LPFC_HBA_ERROR:
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0230 Unexpected timeout, hba link "
"state x%x\n", phba->link_state);
clrlaerr = 1;
break;
case LPFC_HBA_READY:
break;
}
if (clrlaerr) {
lpfc_disc_flush_list(vport);
psli->ring[(psli->extra_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;
vport->port_state = LPFC_VPORT_READY;
}
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)
{
MAILBOX_t *mb = &pmb->u.mb;
struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
struct lpfc_vport *vport = pmb->vport;
pmb->context1 = NULL;
ndlp->nlp_rpi = mb->un.varWords[0];
ndlp->nlp_type |= NLP_FABRIC;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
/*
* Start issuing Fabric-Device Management Interface (FDMI) command to
* 0xfffffa (FDMI well known port) or Delay issuing FDMI command if
* fdmi-on=2 (supporting RPA/hostnmae)
*/
if (vport->cfg_fdmi_on == 1)
lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA);
else
mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60);
/* decrement the node reference count held for this callback
* function.
*/
lpfc_nlp_put(ndlp);
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mempool_free(pmb, phba->mbox_mem_pool);
return;
}
static int
lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param)
{
uint16_t *rpi = param;
return ndlp->nlp_rpi == *rpi;
}
static int
lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param)
{
return memcmp(&ndlp->nlp_portname, param,
sizeof(ndlp->nlp_portname)) == 0;
}
static struct lpfc_nodelist *
__lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param)
{
struct lpfc_nodelist *ndlp;
list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
if (filter(ndlp, param))
return ndlp;
}
return NULL;
}
/*
* This routine looks up the ndlp lists for the given RPI. If rpi found it
* returns the node list element pointer else return NULL.
*/
struct lpfc_nodelist *
__lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi)
{
return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi);
}
/*
* This routine looks up the ndlp lists for the given WWPN. If WWPN found it
* returns the node element list pointer else return NULL.
*/
struct lpfc_nodelist *
lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_nodelist *ndlp;
spin_lock_irq(shost->host_lock);
ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn);
spin_unlock_irq(shost->host_lock);
return ndlp;
}
void
lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
uint32_t did)
{
memset(ndlp, 0, sizeof (struct lpfc_nodelist));
lpfc_initialize_node(vport, ndlp, did);
INIT_LIST_HEAD(&ndlp->nlp_listp);
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
"node init: did:x%x",
ndlp->nlp_DID, 0, 0);
return;
}
/* This routine releases all resources associated with a specifc NPort's ndlp
* and mempool_free's the nodelist.
*/
static void
lpfc_nlp_release(struct kref *kref)
{
struct lpfc_hba *phba;
unsigned long flags;
struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist,
kref);
lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
"node release: did:x%x flg:x%x type:x%x",
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type);
lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
"0279 lpfc_nlp_release: ndlp:x%p "
"usgmap:x%x refcnt:%d\n",
(void *)ndlp, ndlp->nlp_usg_map,
atomic_read(&ndlp->kref.refcount));
/* remove ndlp from action. */
lpfc_nlp_remove(ndlp->vport, ndlp);
/* clear the ndlp active flag for all release cases */
phba = ndlp->phba;
spin_lock_irqsave(&phba->ndlp_lock, flags);
NLP_CLR_NODE_ACT(ndlp);
spin_unlock_irqrestore(&phba->ndlp_lock, flags);
/* free ndlp memory for final ndlp release */
if (NLP_CHK_FREE_REQ(ndlp)) {
kfree(ndlp->lat_data);
mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
}
}
/* This routine bumps the reference count for a ndlp structure to ensure
* that one discovery thread won't free a ndlp while another discovery thread
* is using it.
*/
struct lpfc_nodelist *
lpfc_nlp_get(struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba;
unsigned long flags;
if (ndlp) {
lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
"node get: did:x%x flg:x%x refcnt:x%x",
ndlp->nlp_DID, ndlp->nlp_flag,
atomic_read(&ndlp->kref.refcount));
/* The check of ndlp usage to prevent incrementing the
* ndlp reference count that is in the process of being
* released.
*/
phba = ndlp->phba;
spin_lock_irqsave(&phba->ndlp_lock, flags);
if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
spin_unlock_irqrestore(&phba->ndlp_lock, flags);
lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
"0276 lpfc_nlp_get: ndlp:x%p "
"usgmap:x%x refcnt:%d\n",
(void *)ndlp, ndlp->nlp_usg_map,
atomic_read(&ndlp->kref.refcount));
return NULL;
} else
kref_get(&ndlp->kref);
spin_unlock_irqrestore(&phba->ndlp_lock, flags);
}
return ndlp;
}
/* This routine decrements the reference count for a ndlp structure. If the
* count goes to 0, this indicates the the associated nodelist should be
* freed. Returning 1 indicates the ndlp resource has been released; on the
* other hand, returning 0 indicates the ndlp resource has not been released
* yet.
*/
int
lpfc_nlp_put(struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba;
unsigned long flags;
if (!ndlp)
return 1;
lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
"node put: did:x%x flg:x%x refcnt:x%x",
ndlp->nlp_DID, ndlp->nlp_flag,
atomic_read(&ndlp->kref.refcount));
phba = ndlp->phba;
spin_lock_irqsave(&phba->ndlp_lock, flags);
/* Check the ndlp memory free acknowledge flag to avoid the
* possible race condition that kref_put got invoked again
* after previous one has done ndlp memory free.
*/
if (NLP_CHK_FREE_ACK(ndlp)) {
spin_unlock_irqrestore(&phba->ndlp_lock, flags);
lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
"0274 lpfc_nlp_put: ndlp:x%p "
"usgmap:x%x refcnt:%d\n",
(void *)ndlp, ndlp->nlp_usg_map,
atomic_read(&ndlp->kref.refcount));
return 1;
}
/* Check the ndlp inactivate log flag to avoid the possible
* race condition that kref_put got invoked again after ndlp
* is already in inactivating state.
*/
if (NLP_CHK_IACT_REQ(ndlp)) {
spin_unlock_irqrestore(&phba->ndlp_lock, flags);
lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE,
"0275 lpfc_nlp_put: ndlp:x%p "
"usgmap:x%x refcnt:%d\n",
(void *)ndlp, ndlp->nlp_usg_map,
atomic_read(&ndlp->kref.refcount));
return 1;
}
/* For last put, mark the ndlp usage flags to make sure no
* other kref_get and kref_put on the same ndlp shall get
* in between the process when the final kref_put has been
* invoked on this ndlp.
*/
if (atomic_read(&ndlp->kref.refcount) == 1) {
/* Indicate ndlp is put to inactive state. */
NLP_SET_IACT_REQ(ndlp);
/* Acknowledge ndlp memory free has been seen. */
if (NLP_CHK_FREE_REQ(ndlp))
NLP_SET_FREE_ACK(ndlp);
}
spin_unlock_irqrestore(&phba->ndlp_lock, flags);
/* Note, the kref_put returns 1 when decrementing a reference
* count that was 1, it invokes the release callback function,
* but it still left the reference count as 1 (not actually
* performs the last decrementation). Otherwise, it actually
* decrements the reference count and returns 0.
*/
return kref_put(&ndlp->kref, lpfc_nlp_release);
}
/* This routine free's the specified nodelist if it is not in use
* by any other discovery thread. This routine returns 1 if the
* ndlp has been freed. A return value of 0 indicates the ndlp is
* not yet been released.
*/
int
lpfc_nlp_not_used(struct lpfc_nodelist *ndlp)
{
lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE,
"node not used: did:x%x flg:x%x refcnt:x%x",
ndlp->nlp_DID, ndlp->nlp_flag,
atomic_read(&ndlp->kref.refcount));
if (atomic_read(&ndlp->kref.refcount) == 1)
if (lpfc_nlp_put(ndlp))
return 1;
return 0;
}
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