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[SCSI] lpfc 8.1.12 : Rework offline path to solve HBA reset issues

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Rework offline path to solve HBA reset issues

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
James Smart
2007-04-25 09:51:45 -04:00
committed by James Bottomley
parent 07951076ae
commit 46fa311e69
6 changed files with 154 additions and 56 deletions
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89
drivers/scsi/lpfc/lpfc_attr.c
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@@ -20,6 +20,7 @@
*******************************************************************/
#include <linux/ctype.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
@@ -213,6 +214,7 @@ lpfc_issue_lip(struct Scsi_Host *host)
int mbxstatus = MBXERR_ERROR;
if ((phba->fc_flag & FC_OFFLINE_MODE) ||
(phba->fc_flag & FC_BLOCK_MGMT_IO) ||
(phba->hba_state != LPFC_HBA_READY))
return -EPERM;
@@ -246,19 +248,62 @@ lpfc_issue_lip(struct Scsi_Host *host)
return 0;
}
static int
lpfc_do_offline(struct lpfc_hba *phba, uint32_t type)
{
struct completion online_compl;
struct lpfc_sli_ring *pring;
struct lpfc_sli *psli;
int status = 0;
int cnt = 0;
int i;
init_completion(&online_compl);
lpfc_workq_post_event(phba, &status, &online_compl,
LPFC_EVT_OFFLINE_PREP);
wait_for_completion(&online_compl);
if (status != 0)
return -EIO;
psli = &phba->sli;
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
/* The linkdown event takes 30 seconds to timeout. */
while (pring->txcmplq_cnt) {
msleep(10);
if (cnt++ > 3000) {
lpfc_printf_log(phba,
KERN_WARNING, LOG_INIT,
"%d:0466 Outstanding IO when "
"bringing Adapter offline\n",
phba->brd_no);
break;
}
}
}
init_completion(&online_compl);
lpfc_workq_post_event(phba, &status, &online_compl, type);
wait_for_completion(&online_compl);
if (status != 0)
return -EIO;
return 0;
}
static int
lpfc_selective_reset(struct lpfc_hba *phba)
{
struct completion online_compl;
int status = 0;
init_completion(&online_compl);
lpfc_workq_post_event(phba, &status, &online_compl,
LPFC_EVT_OFFLINE);
wait_for_completion(&online_compl);
status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
if (status != 0)
return -EIO;
return status;
init_completion(&online_compl);
lpfc_workq_post_event(phba, &status, &online_compl,
@@ -324,23 +369,19 @@ lpfc_board_mode_store(struct class_device *cdev, const char *buf, size_t count)
init_completion(&online_compl);
if(strncmp(buf, "online", sizeof("online") - 1) == 0)
if(strncmp(buf, "online", sizeof("online") - 1) == 0) {
lpfc_workq_post_event(phba, &status, &online_compl,
LPFC_EVT_ONLINE);
else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
lpfc_workq_post_event(phba, &status, &online_compl,
LPFC_EVT_OFFLINE);
wait_for_completion(&online_compl);
} else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0)
lpfc_workq_post_event(phba, &status, &online_compl,
LPFC_EVT_WARM_START);
else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
lpfc_workq_post_event(phba, &status, &online_compl,
LPFC_EVT_KILL);
status = lpfc_do_offline(phba, LPFC_EVT_WARM_START);
else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
status = lpfc_do_offline(phba, LPFC_EVT_KILL);
else
return -EINVAL;
wait_for_completion(&online_compl);
if (!status)
return strlen(buf);
else
@@ -645,9 +686,7 @@ lpfc_soft_wwpn_store(struct class_device *cdev, const char *buf, size_t count)
dev_printk(KERN_NOTICE, &phba->pcidev->dev,
"lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no);
init_completion(&online_compl);
lpfc_workq_post_event(phba, &stat1, &online_compl, LPFC_EVT_OFFLINE);
wait_for_completion(&online_compl);
stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
if (stat1)
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"%d:0463 lpfc_soft_wwpn attribute set failed to reinit "
@@ -1307,6 +1346,12 @@ sysfs_mbox_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
return -EPERM;
}
if (phba->fc_flag & FC_BLOCK_MGMT_IO) {
sysfs_mbox_idle(phba);
spin_unlock_irq(host->host_lock);
return -EAGAIN;
}
if ((phba->fc_flag & FC_OFFLINE_MODE) ||
(!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE))){
@@ -1551,6 +1596,9 @@ lpfc_get_stats(struct Scsi_Host *shost)
unsigned long seconds;
int rc = 0;
if (phba->fc_flag & FC_BLOCK_MGMT_IO)
return NULL;
pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmboxq)
return NULL;
@@ -1651,6 +1699,9 @@ lpfc_reset_stats(struct Scsi_Host *shost)
MAILBOX_t *pmb;
int rc = 0;
if (phba->fc_flag & FC_BLOCK_MGMT_IO)
return;
pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmboxq)
return;