scsi: cxlflash: Support AFU state toggling

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>

diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c
index 73b0b10..3042057 100644 (file)
--- 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;
 }