From 3351e4f025f772e76054b1b6dd7ad9afd49a9b99 Mon Sep 17 00:00:00 2001
From: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Date: Mon, 26 Mar 2018 11:33:05 -0500
Subject: [PATCH] scsi: cxlflash: Support AFU state toggling
References: FATE#325192
Patch-mainline: v4.18-rc1
Git-commit: 3351e4f025f772e76054b1b6dd7ad9afd49a9b99
The AFU should be enabled following a successful configuration and disabled
near the end of the cleanup path.
Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Reviewed-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
drivers/scsi/cxlflash/ocxl_hw.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c
index 73b0b104439c..3042057c2680 100644
--- a/drivers/scsi/cxlflash/ocxl_hw.c
+++ b/drivers/scsi/cxlflash/ocxl_hw.c
@@ -342,12 +342,18 @@ static void ocxlflash_unconfig_afu(struct ocxl_hw_afu *afu)
static void ocxlflash_destroy_afu(void *afu_cookie)
{
struct ocxl_hw_afu *afu = afu_cookie;
+ int pos;
if (!afu)
return;
ocxlflash_release_context(afu->ocxl_ctx);
idr_destroy(&afu->idr);
+
+ /* Disable the AFU */
+ pos = afu->acfg.dvsec_afu_control_pos;
+ ocxl_config_set_afu_state(afu->pdev, pos, 0);
+
ocxlflash_unconfig_afu(afu);
kfree(afu);
}
@@ -499,6 +505,9 @@ static int ocxlflash_config_afu(struct pci_dev *pdev, struct ocxl_hw_afu *afu)
__func__, rc);
goto out;
}
+
+ /* Enable the AFU */
+ ocxl_config_set_afu_state(pdev, acfg->dvsec_afu_control_pos, 1);
out:
return rc;
}
--
2.13.6