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scsi: hpsa: add controller checkpoint 

Tell hpsa controller to generate a checkpoint for rare lockup
conditions.

Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Don Brace 2017-10-20 16:51:26 -05:00 committed by Martin K. Petersen
parent 421bf80cc2
commit b9b08cade0
2 changed files with 5 additions and 0 deletions
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4
drivers/scsi/hpsa.c
View File

@ -8009,6 +8009,10 @@ static void controller_lockup_detected(struct ctlr_info *h)
spin_unlock_irqrestore(&h->lock, flags);
dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n",
lockup_detected, h->heartbeat_sample_interval / HZ);
if (lockup_detected == 0xffff0000) {
dev_warn(&h->pdev->dev, "Telling controller to do a CHKPT\n");
writel(DOORBELL_GENERATE_CHKPT, h->vaddr + SA5_DOORBELL);
}
pci_disable_device(h->pdev);
fail_all_outstanding_cmds(h);
}

1
drivers/scsi/hpsa_cmd.h
View File

@ -142,6 +142,7 @@
#define DOORBELL_CTLR_RESET 0x00000004l
#define DOORBELL_CTLR_RESET2 0x00000020l
#define DOORBELL_CLEAR_EVENTS 0x00000040l
#define DOORBELL_GENERATE_CHKPT 0x00000080l
#define CFGTBL_Trans_Simple 0x00000002l
#define CFGTBL_Trans_Performant 0x00000004l