[v10,4/6] misc/mei/hdcp: Fill transcoder index in port info

Message ID	20190827105014.14181-5-ramalingam.c@intel.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=vzYQ=WX=lists.freedesktop.org=intel-gfx-bounces@kernel.org> DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A4C66205C9 From: Ramalingam C <ramalingam.c@intel.com> To: intel-gfx <intel-gfx@lists.freedesktop.org>, dri-devel <dri-devel@lists.freedesktop.org> Date: Tue, 27 Aug 2019 16:20:12 +0530 Message-Id: <20190827105014.14181-5-ramalingam.c@intel.com> In-Reply-To: <20190827105014.14181-1-ramalingam.c@intel.com> References: <20190827105014.14181-1-ramalingam.c@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v10 4/6] misc/mei/hdcp: Fill transcoder index in port info Precedence: list Cc: Jani Nikula <jani.nikula@intel.com>, tomas.winkler@intel.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
Series	drm/i915: Enable HDCP 1.4 and 2.2 on Gen12+ \| expand [v10,0/6] drm/i915: Enable HDCP 1.4 and 2.2 on Gen12+ [v10,1/6] drm/i915: mei_hdcp: I915 sends ddi index as per ME FW [v10,2/6] drm: Move port definition back to i915 header [v10,3/6] drm: Extend I915 mei interface for transcoder info [v10,4/6] misc/mei/hdcp: Fill transcoder index in port info [v10,5/6] drm/i915/hdcp: update current transcoder into intel_hdcp [v10,6/6] drm/i915/hdcp: Enable HDCP 1.4 and 2.2 on Gen12+

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20190827105014.14181-5-ramalingam.c@intel.com (mailing list archive)

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DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A4C66205C9
From: Ramalingam C <ramalingam.c@intel.com>
To: intel-gfx <intel-gfx@lists.freedesktop.org>,
 dri-devel <dri-devel@lists.freedesktop.org>
Date: Tue, 27 Aug 2019 16:20:12 +0530
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MIME-Version: 1.0
Subject: [Intel-gfx] [PATCH v10 4/6] misc/mei/hdcp: Fill transcoder index in
 port info
Precedence: list
Cc: Jani Nikula <jani.nikula@intel.com>, tomas.winkler@intel.com
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Series

drm/i915: Enable HDCP 1.4 and 2.2 on Gen12+ | expand

Commit Message

Ramalingam C Aug. 27, 2019, 10:50 a.m. UTC

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@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@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(-)

Comments

Winkler, Tomas Aug. 27, 2019, 2:19 p.m. UTC | #1

> 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@intel.com>
> Acked-by: Jani Nikula <jani.nikula@intel.com>
> Reviewed-by: Shashank Sharma <shashank.sharma@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;
> +	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+ */
What are you reference here, the member bellow or above? -  It is better to document it in using kdoc! 
Next, what part of the code is validating this?  

>  	u8	physical_port;
> -	u16	reserved;

> +	u8	attached_transcoder;  
Also here need the documentation 
> +	u8	reserved;
>  } __packed;
> 
>  /*
> --
> 2.20.1

Ramalingam C Aug. 27, 2019, 2:31 p.m. UTC | #2

On 2019-08-27 at 19:49:19 +0530, Winkler, Tomas 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@intel.com>
> > Acked-by: Jani Nikula <jani.nikula@intel.com>
> > Reviewed-by: Shashank Sharma <shashank.sharma@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;
> > +	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+ */
> What are you reference here, the member bellow or above? -  It is better to document it in using kdoc! 
> Next, what part of the code is validating this?  
This is documentation for physical_port. As these structures are ME FW
API payloads, i dont think we need a kdoc on it. Please let me know if
you think otherwise.

This is checked at ME FW and returned with ERROR Code.
And as only I915 knows the GEN#, i915 takes care of the filling this
member with Zero(INVALID_PORT), for gen12+.

> 
> >  	u8	physical_port;
> > -	u16	reserved;
> 
> > +	u8	attached_transcoder;  
> Also here need the documentation 
In this file we are not documenting each member of the struct. IMHO variable
name is self documenting.

Since there was a special expectation on physical port on gen12+, I have
added the comment.

-Ram
> > +	u8	reserved;
> >  } __packed;
> > 
> >  /*
> > --
> > 2.20.1
>

Winkler, Tomas Aug. 27, 2019, 2:37 p.m. UTC | #3

> 
> On 2019-08-27 at 19:49:19 +0530, Winkler, Tomas 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@intel.com>
> > > Acked-by: Jani Nikula <jani.nikula@intel.com>
> > > Reviewed-by: Shashank Sharma <shashank.sharma@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;
> > > +	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+ */
> > What are you reference here, the member bellow or above? -  It is better to
> document it in using kdoc!
> > Next, what part of the code is validating this?
> This is documentation for physical_port. As these structures are ME FW API
> payloads, i dont think we need a kdoc on it. Please let me know if you think
> otherwise.
I asked for kdoc, because it is not clear from the comment what member are you commenting on,
In other words the comment is lacking the subject. 

> 
> This is checked at ME FW and returned with ERROR Code.
> And as only I915 knows the GEN#, i915 takes care of the filling this member
> with Zero(INVALID_PORT), for gen12+.
> 
> >
> > >  	u8	physical_port;
> > > -	u16	reserved;
> >
> > > +	u8	attached_transcoder;
> > Also here need the documentation
> In this file we are not documenting each member of the struct. IMHO variable
> name is self documenting.
> 
> Since there was a special expectation on physical port on gen12+, I have added
> the comment.
> 
> -Ram
> > > +	u8	reserved;
> > >  } __packed;
> > >
> > >  /*
> > > --
> > > 2.20.1
> >

Ramalingam C Aug. 27, 2019, 2:41 p.m. UTC | #4

On 2019-08-27 at 20:07:04 +0530, Winkler, Tomas wrote:
> 
> > 
> > On 2019-08-27 at 19:49:19 +0530, Winkler, Tomas 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@intel.com>
> > > > Acked-by: Jani Nikula <jani.nikula@intel.com>
> > > > Reviewed-by: Shashank Sharma <shashank.sharma@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;
> > > > +	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+ */
> > > What are you reference here, the member bellow or above? -  It is better to
> > document it in using kdoc!
> > > Next, what part of the code is validating this?
> > This is documentation for physical_port. As these structures are ME FW API
> > payloads, i dont think we need a kdoc on it. Please let me know if you think
> > otherwise.
> I asked for kdoc, because it is not clear from the comment what member are you commenting on,
> In other words the comment is lacking the subject. 
I will rephrase it as /* physical_port is used until Gen11.5. Must be zero for Gen11.5+ */
Hope that looks good to you.

-Ram
> 
> > 
> > This is checked at ME FW and returned with ERROR Code.
> > And as only I915 knows the GEN#, i915 takes care of the filling this member
> > with Zero(INVALID_PORT), for gen12+.
> > 
> > >
> > > >  	u8	physical_port;
> > > > -	u16	reserved;
> > >
> > > > +	u8	attached_transcoder;
> > > Also here need the documentation
> > In this file we are not documenting each member of the struct. IMHO variable
> > name is self documenting.
> > 
> > Since there was a special expectation on physical port on gen12+, I have added
> > the comment.
> > 
> > -Ram
> > > > +	u8	reserved;
> > > >  } __packed;
> > > >
> > > >  /*
> > > > --
> > > > 2.20.1
> > >

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;
+	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;
 
 /*

[v10,4/6] misc/mei/hdcp: Fill transcoder index in port info

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