[PATCH v2 19/38] cxlflash: Support AFU state toggling

Uma Krishnan
2018-02-26T22:22:42Z

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>
---
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 67f0252..364e7a5 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);
}
@@ -492,6 +498,9 @@ 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;
}
--
2.1.0