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

[Frederic Barrat]

Le 26/02/2018 à 23:22, Uma Krishnan a écrit :
> The AFU should be enabled following a successful configuration and
> disabled near the end of the cleanup path.
> 
> Signed-off-by: Uma Krishnan <ukrishn at linux.vnet.ibm.com>
> Acked-by: Matthew R. Ochs <mrochs at linux.vnet.ibm.com>
> ---

Reviewed-by: Frederic Barrat <fbarrat at 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;
>   }
>