[Skiboot] [PATCH V6 06/21] core/pldm: Encode GetPLDMTypes response

[Abhishek SIngh Tomar]

On Tue, Sep 13, 2022 at 12:26:50PM +0200, Christophe Lombard wrote:
> The GetPLDMTypes command can be used to discover the PLDM type capabilities
> supported by a PLDM terminus and to get a list of the PLDM types that are
> supported.
> 
Reviewed-by: Abhishek Singh Tomar <abhishek at linux.ibm.com>
> Signed-off-by: Christophe Lombard <clombard at linux.vnet.ibm.com>
> ---
>  core/pldm/pldm-responder.c | 52 ++++++++++++++++++++++++++++++++++++++
>  1 file changed, 52 insertions(+)
> 
> diff --git a/core/pldm/pldm-responder.c b/core/pldm/pldm-responder.c
> index 6f11030d..6058af51 100644
> --- a/core/pldm/pldm-responder.c
> +++ b/core/pldm/pldm-responder.c
> @@ -154,6 +154,57 @@ static struct pldm_cmd pldm_base_get_tid = {
>  	.handler = base_get_tid_handler,
>  };
> 
> +/*
> + * GetPLDMTypes (0x04)
> + * The GetPLDMTypes command can be used to discover the PLDM type
> + * capabilities supported by a PLDM terminus and to get a list of the
> + * PLDM types that are supported.
> + */
> +static int base_get_types_handler(const struct pldm_rx_data *req)
> +{
> +	char response_msg[PKT_SIZE(struct pldm_get_types_resp)];
> +	bitmap_elem_t type_map[BITMAP_ELEMS(32)];
> +	struct pldm_type *iter;
> +	int rc;
> +
> +	/*
> +	 * build the supported type list from the registered type
> +	 * handlers
> +	 */
> +	memset(type_map, 0, sizeof(type_map));
> +	list_for_each(&pldm_type_list, iter, link)
> +		bitmap_set_bit(type_map, iter->pldm_type_id);
> +
> +	for (int i = 0; i < BITMAP_ELEMS(32); i++)
> +		type_map[i] = cpu_to_le64(type_map[i]);
> +
> +	memset(response_msg, 0, sizeof(response_msg));
> +	rc = encode_get_types_resp(req->hdrinf.instance,
> +				   PLDM_SUCCESS,
> +				   (bitfield8_t *)type_map,
> +				   (struct pldm_msg *)response_msg);
> +	if (rc != PLDM_SUCCESS) {
> +		prlog(PR_ERR, "Encode GetPLDMTypes Error, rc: %d\n", rc);
> +		cc_resp(req, req->hdrinf.pldm_type,
> +			req->hdrinf.command, PLDM_ERROR);
> +		return OPAL_PARAMETER;
> +	}
> +
> +	rc = pldm_mctp_message_tx(req->source_eid, response_msg, sizeof(response_msg));
> +	if (rc) {
> +		prlog(PR_ERR, "Failed to send GetPLDMTypes response, rc = %d\n", rc);
> +		return OPAL_HARDWARE;
> +	}
> +
> +	return OPAL_SUCCESS;
> +}
> +
> +static struct pldm_cmd pldm_base_get_types = {
> +	.name = "PLDM_GET_PLDM_TYPES",
> +	.pldm_cmd_id = PLDM_GET_PLDM_TYPES,
> +	.handler = base_get_types_handler,
> +};
> +
>  int pldm_responder_handle_request(struct pldm_rx_data *rx)
>  {
>  	const struct pldm_type *type;
> @@ -190,6 +241,7 @@ int pldm_responder_init(void)
>  	/* Register mandatory commands we'll respond to - DSP0240 */
>  	add_type(&pldm_base_type);
>  	add_cmd(&pldm_base_type, &pldm_base_get_tid);
> +	add_cmd(&pldm_base_type, &pldm_base_get_types);
> 
>  	return OPAL_SUCCESS;
>  }
> -- 
> 2.37.3
> 
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