From: Don Brace <don.brace@microsemi.com>
Date: Fri, 20 Oct 2017 16:51:26 -0500
Subject: [PATCH] scsi: hpsa: add controller checkpoint
References: bsc#1077989
Git-commit: b9b08cade0a6a523c185c5e371f05df63c623c34
Patch-mainline: v4.15-rc1
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>
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/scsi/hpsa.c | 4 ++++
drivers/scsi/hpsa_cmd.h | 1 +
2 files changed, 5 insertions(+)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 40bb01d33a3b..34061dddebbb 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -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);
}
diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h
index 078afe448115..78c3b64b0b97 100644
--- a/drivers/scsi/hpsa_cmd.h
+++ b/drivers/scsi/hpsa_cmd.h
@@ -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
--
2.12.3