hdcp: Fill transcoder index in port info

Sharma, Shashank Mon, 26 Aug 2019 22:21:35 -0700


On 8/27/2019 10:47 AM, Ramalingam C wrote:

On 2019-08-27 at 10:42:33 +0530, Sharma, Shashank wrote:

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 <ramalinga...@intel.com>
Acked-by: Jani Nikula <jani.nik...@intel.com>
---
   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 ?

Shashank,

Not needed, as I915 checks the GEN# while loading the transcoder detail
into hdcp_port_data. So here we can assign whatever passed as part of
hdcp_port_data.

-Ram


Yep, just saw this in the next patch,

Please feel free to use: Reviewed-by: Shashank Sharma<shashank.sha...@intel.com>

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

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