Re: [PATCH v9 4/6] misc/mei/hdcp: Fill transcoder index in port info

["Sharma, Shashank" <shashank.sharma@xxxxxxxxx>]

Regards

Shashank

On 8/22/2019 8:49 PM, Ramalingam C wrote:
> For gen12+ platform we need to pass the transcoder info
> as part of the port info into ME FW.
>
> This change fills the payload for ME FW from hdcp_port_data.
>
> Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
> Acked-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> ---
>   drivers/misc/mei/hdcp/mei_hdcp.c | 11 +++++++++++
>   drivers/misc/mei/hdcp/mei_hdcp.h |  4 +++-
>   2 files changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c b/drivers/misc/mei/hdcp/mei_hdcp.c
> index 3638c77eba26..93027fd96c71 100644
> --- a/drivers/misc/mei/hdcp/mei_hdcp.c
> +++ b/drivers/misc/mei/hdcp/mei_hdcp.c
> @@ -58,6 +58,7 @@ mei_hdcp_initiate_session(struct device *dev, struct hdcp_port_data *data,
>   
>   	session_init_in.port.integrated_port_type = data->port_type;
>   	session_init_in.port.physical_port = (u8)data->fw_ddi;

As this entry is only valid till GEN11.5, don't we need GEN_CHECK here, 
say (INTEL_GEN() < 12). Is that possible in MEI_FW ?

If not, probably we have to add this gen_check while filling the fw_tc 
part in I915.

Applies for all the changes below too.

- Shashank

> +	session_init_in.port.attached_transcoder = (u8)data->fw_tc;
>   	session_init_in.protocol = data->protocol;
>   
>   	byte = mei_cldev_send(cldev, (u8 *)&session_init_in,
> @@ -127,6 +128,7 @@ mei_hdcp_verify_receiver_cert_prepare_km(struct device *dev,
>   
>   	verify_rxcert_in.port.integrated_port_type = data->port_type;
>   	verify_rxcert_in.port.physical_port = (u8)data->fw_ddi;
> +	verify_rxcert_in.port.attached_transcoder = (u8)data->fw_tc;
>   
>   	verify_rxcert_in.cert_rx = rx_cert->cert_rx;
>   	memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx, HDCP_2_2_RRX_LEN);
> @@ -197,6 +199,7 @@ mei_hdcp_verify_hprime(struct device *dev, struct hdcp_port_data *data,
>   
>   	send_hprime_in.port.integrated_port_type = data->port_type;
>   	send_hprime_in.port.physical_port = (u8)data->fw_ddi;
> +	send_hprime_in.port.attached_transcoder = (u8)data->fw_tc;
>   
>   	memcpy(send_hprime_in.h_prime, rx_hprime->h_prime,
>   	       HDCP_2_2_H_PRIME_LEN);
> @@ -254,6 +257,7 @@ mei_hdcp_store_pairing_info(struct device *dev, struct hdcp_port_data *data,
>   
>   	pairing_info_in.port.integrated_port_type = data->port_type;
>   	pairing_info_in.port.physical_port = (u8)data->fw_ddi;
> +	pairing_info_in.port.attached_transcoder = (u8)data->fw_tc;
>   
>   	memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km,
>   	       HDCP_2_2_E_KH_KM_LEN);
> @@ -312,6 +316,7 @@ mei_hdcp_initiate_locality_check(struct device *dev,
>   
>   	lc_init_in.port.integrated_port_type = data->port_type;
>   	lc_init_in.port.physical_port = (u8)data->fw_ddi;
> +	lc_init_in.port.attached_transcoder = (u8)data->fw_tc;
>   
>   	byte = mei_cldev_send(cldev, (u8 *)&lc_init_in, sizeof(lc_init_in));
>   	if (byte < 0) {
> @@ -367,6 +372,7 @@ mei_hdcp_verify_lprime(struct device *dev, struct hdcp_port_data *data,
>   
>   	verify_lprime_in.port.integrated_port_type = data->port_type;
>   	verify_lprime_in.port.physical_port = (u8)data->fw_ddi;
> +	verify_lprime_in.port.attached_transcoder = (u8)data->fw_tc;
>   
>   	memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime,
>   	       HDCP_2_2_L_PRIME_LEN);
> @@ -424,6 +430,7 @@ static int mei_hdcp_get_session_key(struct device *dev,
>   
>   	get_skey_in.port.integrated_port_type = data->port_type;
>   	get_skey_in.port.physical_port = (u8)data->fw_ddi;
> +	get_skey_in.port.attached_transcoder = (u8)data->fw_tc;
>   
>   	byte = mei_cldev_send(cldev, (u8 *)&get_skey_in, sizeof(get_skey_in));
>   	if (byte < 0) {
> @@ -488,6 +495,7 @@ mei_hdcp_repeater_check_flow_prepare_ack(struct device *dev,
>   
>   	verify_repeater_in.port.integrated_port_type = data->port_type;
>   	verify_repeater_in.port.physical_port = (u8)data->fw_ddi;
> +	verify_repeater_in.port.attached_transcoder = (u8)data->fw_tc;
>   
>   	memcpy(verify_repeater_in.rx_info, rep_topology->rx_info,
>   	       HDCP_2_2_RXINFO_LEN);
> @@ -558,6 +566,7 @@ static int mei_hdcp_verify_mprime(struct device *dev,
>   
>   	verify_mprime_in.port.integrated_port_type = data->port_type;
>   	verify_mprime_in.port.physical_port = (u8)data->fw_ddi;
> +	verify_mprime_in.port.attached_transcoder = (u8)data->fw_tc;
>   
>   	memcpy(verify_mprime_in.m_prime, stream_ready->m_prime,
>   	       HDCP_2_2_MPRIME_LEN);
> @@ -619,6 +628,7 @@ static int mei_hdcp_enable_authentication(struct device *dev,
>   
>   	enable_auth_in.port.integrated_port_type = data->port_type;
>   	enable_auth_in.port.physical_port = (u8)data->fw_ddi;
> +	enable_auth_in.port.attached_transcoder = (u8)data->fw_tc;
>   	enable_auth_in.stream_type = data->streams[0].stream_type;
>   
>   	byte = mei_cldev_send(cldev, (u8 *)&enable_auth_in,
> @@ -673,6 +683,7 @@ mei_hdcp_close_session(struct device *dev, struct hdcp_port_data *data)
>   
>   	session_close_in.port.integrated_port_type = data->port_type;
>   	session_close_in.port.physical_port = (u8)data->fw_ddi;
> +	session_close_in.port.attached_transcoder = (u8)data->fw_tc;
>   
>   	byte = mei_cldev_send(cldev, (u8 *)&session_close_in,
>   			      sizeof(session_close_in));
> diff --git a/drivers/misc/mei/hdcp/mei_hdcp.h b/drivers/misc/mei/hdcp/mei_hdcp.h
> index e60282eb2d48..58e439d2fc1a 100644
> --- a/drivers/misc/mei/hdcp/mei_hdcp.h
> +++ b/drivers/misc/mei/hdcp/mei_hdcp.h
> @@ -184,8 +184,10 @@ struct hdcp_cmd_no_data {
>   /* Uniquely identifies the hdcp port being addressed for a given command. */
>   struct hdcp_port_id {
>   	u8	integrated_port_type;
> +	/* Used until Gen11.5. Must be zero for Gen11.5+ */
>   	u8	physical_port;
> -	u16	reserved;
> +	u8	attached_transcoder;
> +	u8	reserved;
>   } __packed;
>   
>   /*
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