Re: [PATCH 4/4] tools/testing/cxl: Set Shutdown State support

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

On 2/18/25 11:28 PM, Davidlohr Bueso wrote:
> Add support to emulate the CXL Set Shutdown State operation.
> 
> Reviewed-by: Dave Jiang <dave.jiang@intel.com>
> Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
> ---
>  tools/testing/cxl/test/mem.c | 23 +++++++++++++++++++++++
>  1 file changed, 23 insertions(+)
> 
> diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c
> index 495199238335..832680a87c73 100644
> --- a/tools/testing/cxl/test/mem.c
> +++ b/tools/testing/cxl/test/mem.c
> @@ -65,6 +65,10 @@ static struct cxl_cel_entry mock_cel[] = {
>  		.opcode = cpu_to_le16(CXL_MBOX_OP_GET_HEALTH_INFO),
>  		.effect = CXL_CMD_EFFECT_NONE,
>  	},
> +	{
> +		.opcode = cpu_to_le16(CXL_MBOX_OP_SET_SHUTDOWN_STATE),
> +		.effect = POLICY_CHANGE_IMMEDIATE,
> +	},
>  	{
>  		.opcode = cpu_to_le16(CXL_MBOX_OP_GET_POISON),
>  		.effect = CXL_CMD_EFFECT_NONE,
> @@ -161,6 +165,7 @@ struct cxl_mockmem_data {
>  	u8 event_buf[SZ_4K];
>  	u64 timestamp;
>  	unsigned long sanitize_timeout;
> +	int shutdown_state;

Should be u8?

DJ

>  };
>  
>  static struct mock_event_log *event_find_log(struct device *dev, int log_type)
> @@ -1088,6 +1093,21 @@ static int mock_health_info(struct cxl_mbox_cmd *cmd)
>  	return 0;
>  }
>  
> +static int mock_set_shutdown_state(struct cxl_mockmem_data *mdata,
> +				   struct cxl_mbox_cmd *cmd)
> +{
> +	struct cxl_mbox_set_shutdown_state_in *ss = cmd->payload_in;
> +
> +	if (cmd->size_in != sizeof(*ss))
> +		return -EINVAL;
> +
> +	if (cmd->size_out != 0)
> +		return -EINVAL;
> +
> +	mdata->shutdown_state = ss->state;
> +	return 0;
> +}
> +
>  static struct mock_poison {
>  	struct cxl_dev_state *cxlds;
>  	u64 dpa;
> @@ -1421,6 +1441,9 @@ static int cxl_mock_mbox_send(struct cxl_mailbox *cxl_mbox,
>  	case CXL_MBOX_OP_PASSPHRASE_SECURE_ERASE:
>  		rc = mock_passphrase_secure_erase(mdata, cmd);
>  		break;
> +	case CXL_MBOX_OP_SET_SHUTDOWN_STATE:
> +		rc = mock_set_shutdown_state(mdata, cmd);
> +		break;
>  	case CXL_MBOX_OP_GET_POISON:
>  		rc = mock_get_poison(cxlds, cmd);
>  		break;