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authorJames Smart <james.smart@emulex.com>2011-03-11 16:06:12 -0500
committerJames Bottomley <James.Bottomley@suse.de>2011-03-23 11:36:09 -0500
commit9940b97bb30d7435c881418c809ed652eb329583 (patch)
treed274c01b97553711c10f0d862b460aa3cd00ba02 /drivers/scsi/lpfc/lpfc.h
parent7f86059ac016d8662e5fbfab4875529510977b47 (diff)
[SCSI] lpfc 8.3.22: Add support for PCI Adapter Failure
Periodically poll adapter registers to detect pci adapter failure (reads return -1). On failure, take port offline, set error indicators and wake up worker threads. Threads will take adapter offline. Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com> Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc.h')
-rw-r--r--drivers/scsi/lpfc/lpfc.h25
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index d9869f417d4..60e98a62f30 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -897,7 +897,18 @@ lpfc_worker_wake_up(struct lpfc_hba *phba)
return;
}
-static inline void
+static inline int
+lpfc_readl(void __iomem *addr, uint32_t *data)
+{
+ uint32_t temp;
+ temp = readl(addr);
+ if (temp == 0xffffffff)
+ return -EIO;
+ *data = temp;
+ return 0;
+}
+
+static inline int
lpfc_sli_read_hs(struct lpfc_hba *phba)
{
/*
@@ -906,15 +917,17 @@ lpfc_sli_read_hs(struct lpfc_hba *phba)
*/
phba->sli.slistat.err_attn_event++;
- /* Save status info */
- phba->work_hs = readl(phba->HSregaddr);
- phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
- phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
+ /* Save status info and check for unplug error */
+ if (lpfc_readl(phba->HSregaddr, &phba->work_hs) ||
+ lpfc_readl(phba->MBslimaddr + 0xa8, &phba->work_status[0]) ||
+ lpfc_readl(phba->MBslimaddr + 0xac, &phba->work_status[1])) {
+ return -EIO;
+ }
/* Clear chip Host Attention error bit */
writel(HA_ERATT, phba->HAregaddr);
readl(phba->HAregaddr); /* flush */
phba->pport->stopped = 1;
- return;
+ return 0;
}