From: Don Brace Date: Fri, 20 Oct 2017 21:51:26 +0000 (-0500) Subject: scsi: hpsa: add controller checkpoint X-Git-Tag: v4.15-rc1~125^2~78 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=b9b08cade0a6a523c185c5e371f05df63c623c34;p=linux.git scsi: hpsa: add controller checkpoint Tell hpsa controller to generate a checkpoint for rare lockup conditions. Reviewed-by: Scott Benesh Reviewed-by: Scott Teel Reviewed-by: Kevin Barnett Signed-off-by: Don Brace Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 0330f17c8feb..9c491c507092 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