Re: [PATCH 7/7] cxl/test: Add "Secure Erase" opcode support

[Dave Jiang <dave.jiang@intel.com>]

On 2/24/23 12:46 PM, Davidlohr Bueso wrote:
> Add support to emulate a CXL mem device support the "Secure Erase"
> operation.
> 
> Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>

Reviewed-by: Dave Jiang <dave.jiang@intel.com>

> ---
>   tools/testing/cxl/test/mem.c | 27 +++++++++++++++++++++++++++
>   1 file changed, 27 insertions(+)
> 
> diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c
> index d4466cb27947..8a22a4e592c6 100644
> --- a/tools/testing/cxl/test/mem.c
> +++ b/tools/testing/cxl/test/mem.c
> @@ -519,6 +519,30 @@ static int mock_sanitize(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
>   	return 0; /* assume less than 2 secs, no bg */
>   }
>   
> +static int mock_secure_erase(struct cxl_dev_state *cxlds,
> +			     struct cxl_mbox_cmd *cmd)
> +{
> +	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
> +
> +	if (cmd->size_in != 0)
> +		return -EINVAL;
> +
> +	if (cmd->size_out != 0)
> +		return -EINVAL;
> +
> +	if (mdata->security_state & CXL_PMEM_SEC_STATE_USER_PASS_SET) {
> +		cmd->return_code = CXL_MBOX_CMD_RC_SECURITY;
> +		return -ENXIO;
> +	}
> +
> +	if (mdata->security_state & CXL_PMEM_SEC_STATE_LOCKED) {
> +		cmd->return_code = CXL_MBOX_CMD_RC_SECURITY;
> +		return -ENXIO;
> +	}
> +
> +	return 0;
> +}
> +
>   static int mock_get_security_state(struct cxl_dev_state *cxlds,
>   				   struct cxl_mbox_cmd *cmd)
>   {
> @@ -949,6 +973,9 @@ static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *
>   	case CXL_MBOX_OP_SANITIZE:
>   		rc = mock_sanitize(cxlds, cmd);
>   		break;
> +	case CXL_MBOX_OP_SECURE_ERASE:
> +		rc = mock_secure_erase(cxlds, cmd);
> +		break;
>   	case CXL_MBOX_OP_GET_SECURITY_STATE:
>   		rc = mock_get_security_state(cxlds, cmd);
>   		break;