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[04/12] hpsa: add controller checkpoint

Message ID 150853628650.28275.7433236747576438555.stgit@brunhilda (mailing list archive)
State Accepted
Headers show

Commit Message

Don Brace Oct. 20, 2017, 9:51 p.m. UTC 
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>
---
 drivers/scsi/hpsa.c     |    4 ++++
 drivers/scsi/hpsa_cmd.h |    1 +
 2 files changed, 5 insertions(+)
diff mbox

Patch

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 0330f17..9c491c5 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 078afe4..78c3b64 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