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[SCSI] lpfc 8.3.32: Correct provisioning change failure on local function 

Fixed system held-up when performing resource provsion through same PCI
function

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Smart 2012-06-12 13:54:36 -04:00 committed by James Bottomley
parent bbeb79b90e
commit 618a5230b8
6 changed files with 98 additions and 46 deletions
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4
drivers/scsi/lpfc/lpfc.h
View File

@ -96,6 +96,10 @@ struct lpfc_sli2_slim;
/* queue dump line buffer size */
#define LPFC_LBUF_SZ 128
/* mailbox system shutdown options */
#define LPFC_MBX_NO_WAIT 0
#define LPFC_MBX_WAIT 1
enum lpfc_polling_flags {
ENABLE_FCP_RING_POLLING = 0x1,
DISABLE_FCP_RING_INT = 0x2

4
drivers/scsi/lpfc/lpfc_crtn.h
View File

@ -183,7 +183,7 @@ int lpfc_post_buffer(struct lpfc_hba *, struct lpfc_sli_ring *, int);
void lpfc_decode_firmware_rev(struct lpfc_hba *, char *, int);
int lpfc_online(struct lpfc_hba *);
void lpfc_unblock_mgmt_io(struct lpfc_hba *);
void lpfc_offline_prep(struct lpfc_hba *);
void lpfc_offline_prep(struct lpfc_hba *, int);
void lpfc_offline(struct lpfc_hba *);
void lpfc_reset_hba(struct lpfc_hba *);
@ -273,7 +273,7 @@ int lpfc_sli_host_down(struct lpfc_vport *);
int lpfc_sli_hba_down(struct lpfc_hba *);
int lpfc_sli_issue_mbox(struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t);
int lpfc_sli_handle_mb_event(struct lpfc_hba *);
void lpfc_sli_mbox_sys_shutdown(struct lpfc_hba *);
void lpfc_sli_mbox_sys_shutdown(struct lpfc_hba *, int);
int lpfc_sli_check_eratt(struct lpfc_hba *);
void lpfc_sli_handle_slow_ring_event(struct lpfc_hba *,
struct lpfc_sli_ring *, uint32_t);

2
drivers/scsi/lpfc/lpfc_hbadisc.c
View File

@ -530,7 +530,7 @@ lpfc_work_list_done(struct lpfc_hba *phba)
break;
case LPFC_EVT_OFFLINE_PREP:
if (phba->link_state >= LPFC_LINK_DOWN)
lpfc_offline_prep(phba);
lpfc_offline_prep(phba, LPFC_MBX_WAIT);
*(int *)(evtp->evt_arg1) = 0;
complete((struct completion *)(evtp->evt_arg2));
break;

122
drivers/scsi/lpfc/lpfc_init.c
View File

@ -73,6 +73,8 @@ static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
static void lpfc_sli4_disable_intr(struct lpfc_hba *);
static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t);
static struct scsi_transport_template *lpfc_transport_template = NULL;
static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
@ -1169,7 +1171,7 @@ lpfc_offline_eratt(struct lpfc_hba *phba)
spin_lock_irq(&phba->hbalock);
psli->sli_flag &= ~LPFC_SLI_ACTIVE;
spin_unlock_irq(&phba->hbalock);
lpfc_offline_prep(phba);
lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
lpfc_offline(phba);
lpfc_reset_barrier(phba);
@ -1193,7 +1195,7 @@ lpfc_offline_eratt(struct lpfc_hba *phba)
static void
lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
{
lpfc_offline_prep(phba);
lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
lpfc_offline(phba);
lpfc_sli4_brdreset(phba);
lpfc_hba_down_post(phba);
@ -1251,7 +1253,7 @@ lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
* There was a firmware error. Take the hba offline and then
* attempt to restart it.
*/
lpfc_offline_prep(phba);
lpfc_offline_prep(phba, LPFC_MBX_WAIT);
lpfc_offline(phba);
/* Wait for the ER1 bit to clear.*/
@ -1372,7 +1374,7 @@ lpfc_handle_eratt_s3(struct lpfc_hba *phba)
* There was a firmware error. Take the hba offline and then
* attempt to restart it.
*/
lpfc_offline_prep(phba);
lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
lpfc_offline(phba);
lpfc_sli_brdrestart(phba);
if (lpfc_online(phba) == 0) { /* Initialize the HBA */
@ -1427,6 +1429,54 @@ lpfc_handle_eratt_s3(struct lpfc_hba *phba)
return;
}
/**
* lpfc_sli4_port_sta_fn_reset - The SLI4 function reset due to port status reg
* @phba: pointer to lpfc hba data structure.
* @mbx_action: flag for mailbox shutdown action.
*
* This routine is invoked to perform an SLI4 port PCI function reset in
* response to port status register polling attention. It waits for port
* status register (ERR, RDY, RN) bits before proceeding with function reset.
* During this process, interrupt vectors are freed and later requested
* for handling possible port resource change.
**/
static int
lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action)
{
int rc;
uint32_t intr_mode;
/*
* On error status condition, driver need to wait for port
* ready before performing reset.
*/
rc = lpfc_sli4_pdev_status_reg_wait(phba);
if (!rc) {
/* need reset: attempt for port recovery */
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2887 Reset Needed: Attempting Port "
"Recovery...\n");
lpfc_offline_prep(phba, mbx_action);
lpfc_offline(phba);
/* release interrupt for possible resource change */
lpfc_sli4_disable_intr(phba);
lpfc_sli_brdrestart(phba);
/* request and enable interrupt */
intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
if (intr_mode == LPFC_INTR_ERROR) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"3175 Failed to enable interrupt\n");
return -EIO;
} else {
phba->intr_mode = intr_mode;
}
rc = lpfc_online(phba);
if (rc == 0)
lpfc_unblock_mgmt_io(phba);
}
return rc;
}
/**
* lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
* @phba: pointer to lpfc hba data structure.
@ -1506,30 +1556,18 @@ lpfc_handle_eratt_s4(struct lpfc_hba *phba)
reg_err2 == SLIPORT_ERR2_REG_FUNC_PROVISON)
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"3145 Port Down: Provisioning\n");
/*
* On error status condition, driver need to wait for port
* ready before performing reset.
*/
rc = lpfc_sli4_pdev_status_reg_wait(phba);
if (!rc) {
/* need reset: attempt for port recovery */
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2887 Reset Needed: Attempting Port "
"Recovery...\n");
lpfc_offline_prep(phba);
lpfc_offline(phba);
lpfc_sli_brdrestart(phba);
if (lpfc_online(phba) == 0) {
lpfc_unblock_mgmt_io(phba);
/* don't report event on forced debug dump */
if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
return;
else
break;
}
/* fall through for not able to recover */
/* Check port status register for function reset */
rc = lpfc_sli4_port_sta_fn_reset(phba, LPFC_MBX_NO_WAIT);
if (rc == 0) {
/* don't report event on forced debug dump */
if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
return;
else
break;
}
/* fall through for not able to recover */
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"3152 Unrecoverable error, bring the port "
"offline\n");
@ -2494,15 +2532,19 @@ lpfc_stop_hba_timers(struct lpfc_hba *phba)
* driver prepares the HBA interface for online or offline.
**/
static void
lpfc_block_mgmt_io(struct lpfc_hba * phba)
lpfc_block_mgmt_io(struct lpfc_hba *phba, int mbx_action)
{
unsigned long iflag;
uint8_t actcmd = MBX_HEARTBEAT;
unsigned long timeout;
timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
spin_lock_irqsave(&phba->hbalock, iflag);
phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
spin_unlock_irqrestore(&phba->hbalock, iflag);
if (mbx_action == LPFC_MBX_NO_WAIT)
return;
timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
spin_lock_irqsave(&phba->hbalock, iflag);
if (phba->sli.mbox_active) {
actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
/* Determine how long we might wait for the active mailbox
@ -2592,7 +2634,7 @@ lpfc_online(struct lpfc_hba *phba)
lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
"0458 Bring Adapter online\n");
lpfc_block_mgmt_io(phba);
lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
if (!lpfc_sli_queue_setup(phba)) {
lpfc_unblock_mgmt_io(phba);
@ -2660,7 +2702,7 @@ lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
* queue to make it ready to be brought offline.
**/
void
lpfc_offline_prep(struct lpfc_hba * phba)
lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action)
{
struct lpfc_vport *vport = phba->pport;
struct lpfc_nodelist *ndlp, *next_ndlp;
@ -2671,7 +2713,7 @@ lpfc_offline_prep(struct lpfc_hba * phba)
if (vport->fc_flag & FC_OFFLINE_MODE)
return;
lpfc_block_mgmt_io(phba);
lpfc_block_mgmt_io(phba, mbx_action);
lpfc_linkdown(phba);
@ -2718,7 +2760,7 @@ lpfc_offline_prep(struct lpfc_hba * phba)
}
lpfc_destroy_vport_work_array(phba, vports);
lpfc_sli_mbox_sys_shutdown(phba);
lpfc_sli_mbox_sys_shutdown(phba, mbx_action);
}
/**
@ -4312,7 +4354,7 @@ lpfc_reset_hba(struct lpfc_hba *phba)
phba->link_state = LPFC_HBA_ERROR;
return;
}
lpfc_offline_prep(phba);
lpfc_offline_prep(phba, LPFC_MBX_WAIT);
lpfc_offline(phba);
lpfc_sli_brdrestart(phba);
lpfc_online(phba);
@ -8890,7 +8932,7 @@ lpfc_pci_suspend_one_s3(struct pci_dev *pdev, pm_message_t msg)
"0473 PCI device Power Management suspend.\n");
/* Bring down the device */
lpfc_offline_prep(phba);
lpfc_offline_prep(phba, LPFC_MBX_WAIT);
lpfc_offline(phba);
kthread_stop(phba->worker_thread);
@ -9016,7 +9058,7 @@ lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
"2710 PCI channel disable preparing for reset\n");
/* Block any management I/Os to the device */
lpfc_block_mgmt_io(phba);
lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
/* Block all SCSI devices' I/Os on the host */
lpfc_scsi_dev_block(phba);
@ -9160,7 +9202,7 @@ lpfc_io_slot_reset_s3(struct pci_dev *pdev)
phba->intr_mode = intr_mode;
/* Take device offline, it will perform cleanup */
lpfc_offline_prep(phba);
lpfc_offline_prep(phba, LPFC_MBX_WAIT);
lpfc_offline(phba);
lpfc_sli_brdrestart(phba);
@ -9634,7 +9676,7 @@ lpfc_pci_suspend_one_s4(struct pci_dev *pdev, pm_message_t msg)
"2843 PCI device Power Management suspend.\n");
/* Bring down the device */
lpfc_offline_prep(phba);
lpfc_offline_prep(phba, LPFC_MBX_WAIT);
lpfc_offline(phba);
kthread_stop(phba->worker_thread);
@ -9760,7 +9802,7 @@ lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
"2826 PCI channel disable preparing for reset\n");
/* Block any management I/Os to the device */
lpfc_block_mgmt_io(phba);
lpfc_block_mgmt_io(phba, LPFC_MBX_NO_WAIT);
/* Block all SCSI devices' I/Os on the host */
lpfc_scsi_dev_block(phba);
@ -9933,7 +9975,7 @@ lpfc_io_resume_s4(struct pci_dev *pdev)
*/
if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
/* Perform device reset */
lpfc_offline_prep(phba);
lpfc_offline_prep(phba, LPFC_MBX_WAIT);
lpfc_offline(phba);
lpfc_sli_brdrestart(phba);
/* Bring the device back online */

2
drivers/scsi/lpfc/lpfc_scsi.c
View File

@ -4982,7 +4982,7 @@ lpfc_host_reset_handler(struct scsi_cmnd *cmnd)
struct lpfc_hba *phba = vport->phba;
int rc, ret = SUCCESS;
lpfc_offline_prep(phba);
lpfc_offline_prep(phba, LPFC_MBX_WAIT);
lpfc_offline(phba);
rc = lpfc_sli_brdrestart(phba);
if (rc)

10
drivers/scsi/lpfc/lpfc_sli.c
View File

@ -8984,7 +8984,7 @@ lpfc_sli_hba_down(struct lpfc_hba *phba)
int i;
/* Shutdown the mailbox command sub-system */
lpfc_sli_mbox_sys_shutdown(phba);
lpfc_sli_mbox_sys_shutdown(phba, LPFC_MBX_WAIT);
lpfc_hba_down_prep(phba);
@ -9996,11 +9996,17 @@ lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq,
* sub-system flush routine to gracefully bring down mailbox sub-system.
**/
void
lpfc_sli_mbox_sys_shutdown(struct lpfc_hba *phba)
lpfc_sli_mbox_sys_shutdown(struct lpfc_hba *phba, int mbx_action)
{
struct lpfc_sli *psli = &phba->sli;
unsigned long timeout;
if (mbx_action == LPFC_MBX_NO_WAIT) {
/* delay 100ms for port state */
msleep(100);
lpfc_sli_mbox_sys_flush(phba);
return;
}
timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
spin_lock_irq(&phba->hbalock);