[Intel-gfx] [PATCH v10 6/6] drm/i915/mtl: Add HDCP GSC interface
Kandpal, Suraj
suraj.kandpal at intel.com
Mon Mar 20 12:09:06 UTC 2023
> -----Original Message-----
> From: Shankar, Uma <uma.shankar at intel.com>
> Sent: Thursday, March 16, 2023 1:43 PM
> To: Kandpal, Suraj <suraj.kandpal at intel.com>; intel-
> gfx at lists.freedesktop.org
> Cc: Nautiyal, Ankit K <ankit.k.nautiyal at intel.com>; Winkler, Tomas
> <tomas.winkler at intel.com>; Vivi, Rodrigo <rodrigo.vivi at intel.com>; Gupta,
> Anshuman <anshuman.gupta at intel.com>
> Subject: RE: [PATCH v10 6/6] drm/i915/mtl: Add HDCP GSC interface
>
>
>
> > -----Original Message-----
> > From: Kandpal, Suraj <suraj.kandpal at intel.com>
> > Sent: Thursday, March 9, 2023 1:22 PM
> > To: Shankar, Uma <uma.shankar at intel.com>;
> > intel-gfx at lists.freedesktop.org
> > Cc: Nautiyal, Ankit K <ankit.k.nautiyal at intel.com>; Winkler, Tomas
> > <tomas.winkler at intel.com>; Vivi, Rodrigo <rodrigo.vivi at intel.com>;
> > Gupta, Anshuman <anshuman.gupta at intel.com>
> > Subject: RE: [PATCH v10 6/6] drm/i915/mtl: Add HDCP GSC interface
> >
> >
> >
> > > -----Original Message-----
> > > From: Shankar, Uma <uma.shankar at intel.com>
> > > Sent: Tuesday, March 7, 2023 12:15 PM
> > > To: Kandpal, Suraj <suraj.kandpal at intel.com>; intel-
> > > gfx at lists.freedesktop.org
> > > Cc: Nautiyal, Ankit K <ankit.k.nautiyal at intel.com>; Winkler, Tomas
> > > <tomas.winkler at intel.com>; Vivi, Rodrigo <rodrigo.vivi at intel.com>;
> > > Gupta, Anshuman <anshuman.gupta at intel.com>
> > > Subject: RE: [PATCH v10 6/6] drm/i915/mtl: Add HDCP GSC interface
> > >
> > >
> > >
> > > > -----Original Message-----
> > > > From: Shankar, Uma
> > > > Sent: Monday, March 6, 2023 6:05 PM
> > > > To: Kandpal, Suraj <suraj.kandpal at intel.com>;
> > > > intel-gfx at lists.freedesktop.org
> > > > Cc: Nautiyal, Ankit K <ankit.k.nautiyal at intel.com>; Winkler, Tomas
> > > > <tomas.winkler at intel.com>; Vivi, Rodrigo <rodrigo.vivi at intel.com>;
> > > > Gupta, Anshuman <Anshuman.Gupta at intel.com>
> > > > Subject: RE: [PATCH v10 6/6] drm/i915/mtl: Add HDCP GSC interface
> > > >
> > > >
> > > >
> > > > > -----Original Message-----
> > > > > From: Kandpal, Suraj <suraj.kandpal at intel.com>
> > > > > Sent: Wednesday, February 1, 2023 2:38 PM
> > > > > To: intel-gfx at lists.freedesktop.org
> > > > > Cc: Nautiyal, Ankit K <ankit.k.nautiyal at intel.com>; Kandpal,
> > > > > Suraj <suraj.kandpal at intel.com>; Winkler, Tomas
> > > <tomas.winkler at intel.com>;
> > > > > Vivi, Rodrigo <rodrigo.vivi at intel.com>; Shankar, Uma
> > > > > <uma.shankar at intel.com>; Gupta, Anshuman
> > > <anshuman.gupta at intel.com>
> > > > > Subject: [PATCH v10 6/6] drm/i915/mtl: Add HDCP GSC interface
> > > > >
> > > > > MTL uses GSC command streamer i.e gsc cs to send HDCP/PXP
> > > commands
> > > > > to GSC f/w. It requires to keep hdcp display driver agnostic to
> > > > > content protection f/w (ME/GSC fw) in the form of
> > > > > i915_hdcp_fw_ops
> > > generic ops.
> > > > >
> > > > > Adding HDCP GSC CS interface by leveraging the i915_hdcp_fw_ops
> > > > > generic ops instead of I915_HDCP_COMPONENT as integral part of
> i915.
> > > > >
> > > > > Adding checks to see if GSC is loaded and proxy is setup
> > > > >
> > > > > --v6
> > > > > -dont change the license date in same patch series [Jani] -fix
> > > > > the license year {Jani]
> > > > >
> > > > > --v8
> > > > > -remove stale comment [Ankit]
> > > > > -get headers in alphabetical order [Ankit] -fix hdcp2_supported
> > > > > check [Ankit]
> > > > >
> > > > > --v9
> > > > > -remove return statement from hdcp_gsc_fini [Ankit]
> > > >
> > > > Looks Good to me.
> > > > Reviewed-by: Uma Shankar <uma.shankar at intel.com>
> > > >
> > > > > Cc: Tomas Winkler <tomas.winkler at intel.com>
> > > > > Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> > > > > Cc: Uma Shankar <uma.shankar at intel.com>
> > > > > Cc: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
> > > > > Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
> > > > > Signed-off-by: Suraj Kandpal <suraj.kandpal at intel.com>
> > > > > Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
> > > > > ---
> > > > > drivers/gpu/drm/i915/display/intel_hdcp.c | 28 +-
> > > > > drivers/gpu/drm/i915/display/intel_hdcp_gsc.c | 637
> > > +++++++++++++++++-
> > > > > drivers/gpu/drm/i915/display/intel_hdcp_gsc.h | 3 +
> > > > > 3 files changed, 660 insertions(+), 8 deletions(-)
> > > > >
> > > > > diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c
> > > > > b/drivers/gpu/drm/i915/display/intel_hdcp.c
> > > > > index 0d6aed1eb171..61bb2bbd0349 100644
> > > > > --- a/drivers/gpu/drm/i915/display/intel_hdcp.c
> > > > > +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
> > > > > @@ -23,6 +23,7 @@
> > > > > #include "intel_display_power_well.h"
> > > > > #include "intel_display_types.h"
> > > > > #include "intel_hdcp.h"
> > > > > +#include "intel_hdcp_gsc.h"
> > > > > #include "intel_hdcp_regs.h"
> > > > > #include "intel_pcode.h"
> > > > >
> > > > > @@ -203,13 +204,20 @@ bool intel_hdcp2_capable(struct
> > > > > intel_connector
> > > > > *connector)
> > > > > struct intel_digital_port *dig_port =
> > > intel_attached_dig_port(connector);
> > > > > struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > > > > struct intel_hdcp *hdcp = &connector->hdcp;
> > > > > + struct intel_gt *gt = dev_priv->media_gt;
> > > > > + struct intel_gsc_uc *gsc = >->uc.gsc;
> > > > > bool capable = false;
> > > > >
> > > > > /* I915 support for HDCP2.2 */
> > > > > if (!hdcp->hdcp2_supported)
> > > > > return false;
> > > > >
> > > > > - /* MEI interface is solid */
> > > > > + /* If MTL+ make sure gsc is loaded and proxy is setup */
> > > > > + if (intel_hdcp_gsc_cs_required(dev_priv))
> > > > > + if (!intel_uc_fw_is_running(&gsc->fw))
> > > > > + return false;
> > > > > +
> > > > > + /* MEI/GSC interface is solid depending on which is used */
> > > > > mutex_lock(&dev_priv->display.hdcp.comp_mutex);
> > > > > if (!dev_priv->display.hdcp.comp_added ||
> > > > > !dev_priv->display.hdcp.master) {
> > > > > mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
> > > > > @@ -2235,6 +2243,9 @@ static int
> > > > > initialize_hdcp_port_data(struct intel_connector *connector,
> > > > >
> > > > > static bool is_hdcp2_supported(struct drm_i915_private
> > > > > *dev_priv) {
> > > > > + if (intel_hdcp_gsc_cs_required(dev_priv))
> > > > > + return true;
> > > > > +
> > > > > if (!IS_ENABLED(CONFIG_INTEL_MEI_HDCP))
> > > > > return false;
> > > > >
> > > > > @@ -2256,10 +2267,14 @@ void intel_hdcp_component_init(struct
> > > > > drm_i915_private *dev_priv)
> > > > >
> > > > > dev_priv->display.hdcp.comp_added = true;
> > > > > mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
> > > > > - ret = component_add_typed(dev_priv->drm.dev,
> &i915_hdcp_ops,
> > > > > - I915_COMPONENT_HDCP);
> > > > > + if (intel_hdcp_gsc_cs_required(dev_priv))
> > > > > + ret = intel_hdcp_gsc_init(dev_priv);
> > > > > + else
> > > > > + ret = component_add_typed(dev_priv->drm.dev,
> > > &i915_hdcp_ops,
> > > > > + I915_COMPONENT_HDCP);
> > > > > +
> > > > > if (ret < 0) {
> > > > > - drm_dbg_kms(&dev_priv->drm, "Failed at
> component
> > > add(%d)\n",
> > > > > + drm_dbg_kms(&dev_priv->drm, "Failed at fw
> component
> > > > > add(%d)\n",
> > > > > ret);
> > > > > mutex_lock(&dev_priv->display.hdcp.comp_mutex);
> > > > > dev_priv->display.hdcp.comp_added = false; @@ -2486,7
> > > +2501,10
> > > > @@
> > > > > void intel_hdcp_component_fini(struct drm_i915_private *dev_priv)
> > > > > dev_priv->display.hdcp.comp_added = false;
> > > > > mutex_unlock(&dev_priv->display.hdcp.comp_mutex);
> > > > >
> > > > > - component_del(dev_priv->drm.dev, &i915_hdcp_ops);
> > > > > + if (intel_hdcp_gsc_cs_required(dev_priv))
> > > > > + intel_hdcp_gsc_fini(dev_priv);
> > > > > + else
> > > > > + component_del(dev_priv->drm.dev,
> &i915_hdcp_ops);
> > > > > }
> > > > >
> > > > > void intel_hdcp_cleanup(struct intel_connector *connector) diff
> > > > > --git a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c
> > > > > b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c
> > > > > index 8e3b5e6733d7..7eb1eeeb5a51 100644
> > > > > --- a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c
> > > > > +++ b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c
> > > > > @@ -3,12 +3,617 @@
> > > > > * Copyright 2023, Intel Corporation.
> > > > > */
> > > > >
> > > > > +#include <drm/i915_hdcp_interface.h>
> > > > > +
> > > > > #include "display/intel_hdcp_gsc.h"
> > > > > #include "gem/i915_gem_region.h"
> > > > > #include "gt/uc/intel_gsc_uc_heci_cmd_submit.h"
> > > > > #include "i915_drv.h"
> > > > > #include "i915_utils.h"
> > > > >
> > > > > +bool intel_hdcp_gsc_cs_required(struct drm_i915_private *i915) {
> > > > > + return DISPLAY_VER(i915) >= 14; }
> > > > > +
> > > > > +static int
> > > > > +gsc_hdcp_initiate_session(struct device *dev, struct
> > > > > +hdcp_port_data
> > > *data,
> > > > > + struct hdcp2_ake_init *ake_data) {
> > >
> > >
> > > One more input, can we make the data packet creation in a common
> > > file since it is defined by protocol and should be same both for mei or gsc.
> > >
> > > mei and GSC specific stuff like headers and actual command to send
> > > can be separated by respective interface but protocol part can be kept
> common.
> > >
> > > Regards,
> > > Uma Shankar
> >
> > We actually discussed this over in a previous version to which Jani
> > suggested to go with a Separate module which felt like a lot of rework
> > considering they will only be used at two places.
> > https://patchwork.freedesktop.org/patch/516449/?series=111876&rev=5
>
> It may be used now even by Xe driver as well. Can you create an internal JIRA
> to plan the module and cleaning these definitions. For now, we can go with
> this unless some strong objection by anyone.
>
Hi,
Sure I will create an internal task for HDCP cleanup and common code reword through header or module
Whichever the community prefers
Regards,
Suraj Kandpal
> Regards,
> Uma Shankar
>
> > Regards,
> > Suraj Kandpal
> >
> > >
> > > > > + struct wired_cmd_initiate_hdcp2_session_in session_init_in
> = {
> > > > > +{
> > > > > +0 }
> > > };
> > > > > + struct wired_cmd_initiate_hdcp2_session_out
> > > > > + session_init_out = { {
> 0 } };
> > > > > + struct drm_i915_private *i915;
> > > > > + ssize_t byte;
> > > > > +
> > > > > + if (!dev || !data || !ake_data)
> > > > > + return -EINVAL;
> > > > > +
> > > > > + i915 = kdev_to_i915(dev);
> > > > > + if (!i915) {
> > > > > + dev_err(dev, "DRM not initialized, aborting
> HDCP.\n");
> > > > > + return -ENODEV;
> > > > > + }
> > > > > +
> > > > > + session_init_in.header.api_version = HDCP_API_VERSION;
> > > > > + session_init_in.header.command_id =
> > > WIRED_INITIATE_HDCP2_SESSION;
> > > > > + session_init_in.header.status = FW_HDCP_STATUS_SUCCESS;
> > > > > + session_init_in.header.buffer_len =
> > > > > +
> > > > > WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN;
> > > > > +
> > > > > + session_init_in.port.integrated_port_type = data->port_type;
> > > > > + session_init_in.port.physical_port = (u8)data->hdcp_ddi;
> > > > > + session_init_in.port.attached_transcoder = (u8)data-
> > > >hdcp_transcoder;
> > > > > + session_init_in.protocol = data->protocol;
> > > > > +
> > > > > + byte = intel_hdcp_gsc_msg_send(i915, (u8
> *)&session_init_in,
> > > > > + sizeof(session_init_in),
> > > > > + (u8 *)&session_init_out,
> > > > > + sizeof(session_init_out));
> > > > > + if (byte < 0) {
> > > > > + drm_dbg_kms(&i915->drm,
> "intel_hdcp_gsc_msg_send
> > > failed.
> > > > > %zd\n", byte);
> > > > > + return byte;
> > > > > + }
> > > > > +
> > > > > + if (session_init_out.header.status !=
> FW_HDCP_STATUS_SUCCESS) {
> > > > > + drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed.
> Status:
> > > > > 0x%X\n",
> > > > > + WIRED_INITIATE_HDCP2_SESSION,
> > > > > + session_init_out.header.status);
> > > > > + return -EIO;
> > > > > + }
> > > > > +
> > > > > + ake_data->msg_id = HDCP_2_2_AKE_INIT;
> > > > > + ake_data->tx_caps = session_init_out.tx_caps;
> > > > > + memcpy(ake_data->r_tx, session_init_out.r_tx,
> > > HDCP_2_2_RTX_LEN);
> > > > > +
> > > > > + return 0;
> > > > > +}
> > > > > +
> > > > > +static int
> > > > > +gsc_hdcp_verify_receiver_cert_prepare_km(struct device *dev,
> > > > > + struct hdcp_port_data *data,
> > > > > + struct hdcp2_ake_send_cert
> > > *rx_cert,
> > > > > + bool *km_stored,
> > > > > + struct
> hdcp2_ake_no_stored_km
> > > > > +
> *ek_pub_km,
> > > > > + size_t *msg_sz)
> > > > > +{
> > > > > + struct wired_cmd_verify_receiver_cert_in verify_rxcert_in = {
> { 0 } };
> > > > > + struct wired_cmd_verify_receiver_cert_out verify_rxcert_out
> =
> > > > > +{ { 0
> > > } };
> > > > > + struct drm_i915_private *i915;
> > > > > + ssize_t byte;
> > > > > +
> > > > > + if (!dev || !data || !rx_cert || !km_stored || !ek_pub_km ||
> > > !msg_sz)
> > > > > + return -EINVAL;
> > > > > +
> > > > > + i915 = kdev_to_i915(dev);
> > > > > + if (!i915) {
> > > > > + dev_err(dev, "DRM not initialized, aborting
> HDCP.\n");
> > > > > + return -ENODEV;
> > > > > + }
> > > > > +
> > > > > + verify_rxcert_in.header.api_version = HDCP_API_VERSION;
> > > > > + verify_rxcert_in.header.command_id =
> > > WIRED_VERIFY_RECEIVER_CERT;
> > > > > + verify_rxcert_in.header.status =
> FW_HDCP_STATUS_SUCCESS;
> > > > > + verify_rxcert_in.header.buffer_len =
> > > > > +
> > > > > WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN;
> > > > > +
> > > > > + verify_rxcert_in.port.integrated_port_type = data-
> >port_type;
> > > > > + verify_rxcert_in.port.physical_port = (u8)data->hdcp_ddi;
> > > > > + verify_rxcert_in.port.attached_transcoder =
> > > > > +(u8)data->hdcp_transcoder;
> > > > > +
> > > > > + verify_rxcert_in.cert_rx = rx_cert->cert_rx;
> > > > > + memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx,
> > > HDCP_2_2_RRX_LEN);
> > > > > + memcpy(verify_rxcert_in.rx_caps, rx_cert->rx_caps,
> > > > > +HDCP_2_2_RXCAPS_LEN);
> > > > > +
> > > > > + byte = intel_hdcp_gsc_msg_send(i915, (u8
> *)&verify_rxcert_in,
> > > > > + sizeof(verify_rxcert_in),
> > > > > + (u8 *)&verify_rxcert_out,
> > > > > + sizeof(verify_rxcert_out));
> > > > > + if (byte < 0) {
> > > > > + drm_dbg_kms(&i915->drm,
> "intel_hdcp_gsc_msg_send
> > > failed:
> > > > > %zd\n", byte);
> > > > > + return byte;
> > > > > + }
> > > > > +
> > > > > + if (verify_rxcert_out.header.status !=
> FW_HDCP_STATUS_SUCCESS)
> > > {
> > > > > + drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed.
> Status:
> > > > > 0x%X\n",
> > > > > + WIRED_VERIFY_RECEIVER_CERT,
> > > > > + verify_rxcert_out.header.status);
> > > > > + return -EIO;
> > > > > + }
> > > > > +
> > > > > + *km_stored = !!verify_rxcert_out.km_stored;
> > > > > + if (verify_rxcert_out.km_stored) {
> > > > > + ek_pub_km->msg_id = HDCP_2_2_AKE_STORED_KM;
> > > > > + *msg_sz = sizeof(struct hdcp2_ake_stored_km);
> > > > > + } else {
> > > > > + ek_pub_km->msg_id =
> HDCP_2_2_AKE_NO_STORED_KM;
> > > > > + *msg_sz = sizeof(struct hdcp2_ake_no_stored_km);
> > > > > + }
> > > > > +
> > > > > + memcpy(ek_pub_km->e_kpub_km,
> &verify_rxcert_out.ekm_buff,
> > > > > + sizeof(verify_rxcert_out.ekm_buff));
> > > > > +
> > > > > + return 0;
> > > > > +}
> > > > > +
> > > > > +static int
> > > > > +gsc_hdcp_verify_hprime(struct device *dev, struct
> > > > > +hdcp_port_data
> > > *data,
> > > > > + struct hdcp2_ake_send_hprime *rx_hprime) {
> > > > > + struct wired_cmd_ake_send_hprime_in send_hprime_in = { {
> 0 } };
> > > > > + struct wired_cmd_ake_send_hprime_out send_hprime_out =
> { { 0 }
> > > };
> > > > > + struct drm_i915_private *i915;
> > > > > + ssize_t byte;
> > > > > +
> > > > > + if (!dev || !data || !rx_hprime)
> > > > > + return -EINVAL;
> > > > > +
> > > > > + i915 = kdev_to_i915(dev);
> > > > > + if (!i915) {
> > > > > + dev_err(dev, "DRM not initialized, aborting
> HDCP.\n");
> > > > > + return -ENODEV;
> > > > > + }
> > > > > +
> > > > > + send_hprime_in.header.api_version = HDCP_API_VERSION;
> > > > > + send_hprime_in.header.command_id =
> WIRED_AKE_SEND_HPRIME;
> > > > > + send_hprime_in.header.status =
> FW_HDCP_STATUS_SUCCESS;
> > > > > + send_hprime_in.header.buffer_len =
> > > > > +WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN;
> > > > > +
> > > > > + send_hprime_in.port.integrated_port_type = data-
> >port_type;
> > > > > + send_hprime_in.port.physical_port = (u8)data->hdcp_ddi;
> > > > > + send_hprime_in.port.attached_transcoder =
> > > > > +(u8)data->hdcp_transcoder;
> > > > > +
> > > > > + memcpy(send_hprime_in.h_prime, rx_hprime->h_prime,
> > > > > + HDCP_2_2_H_PRIME_LEN);
> > > > > +
> > > > > + byte = intel_hdcp_gsc_msg_send(i915, (u8
> *)&send_hprime_in,
> > > > > + sizeof(send_hprime_in),
> > > > > + (u8 *)&send_hprime_out,
> > > > > + sizeof(send_hprime_out));
> > > > > + if (byte < 0) {
> > > > > + drm_dbg_kms(&i915->drm,
> "intel_hdcp_gsc_msg_send
> > > failed.
> > > > > %zd\n", byte);
> > > > > + return byte;
> > > > > + }
> > > > > +
> > > > > + if (send_hprime_out.header.status !=
> FW_HDCP_STATUS_SUCCESS)
> > > {
> > > > > + drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed.
> Status:
> > > > > 0x%X\n",
> > > > > + WIRED_AKE_SEND_HPRIME,
> > > > > send_hprime_out.header.status);
> > > > > + return -EIO;
> > > > > + }
> > > > > +
> > > > > + return 0;
> > > > > +}
> > > > > +
> > > > > +static int
> > > > > +gsc_hdcp_store_pairing_info(struct device *dev, struct
> > > > > +hdcp_port_data
> > > *data,
> > > > > + struct hdcp2_ake_send_pairing_info
> *pairing_info)
> > > {
> > > > > + struct wired_cmd_ake_send_pairing_info_in pairing_info_in
> = {
> > > > > +{
> > > > > +0 }
> > > };
> > > > > + struct wired_cmd_ake_send_pairing_info_out
> pairing_info_out =
> > > > > +{ {
> > > 0 } };
> > > > > + struct drm_i915_private *i915;
> > > > > + ssize_t byte;
> > > > > +
> > > > > + if (!dev || !data || !pairing_info)
> > > > > + return -EINVAL;
> > > > > +
> > > > > + i915 = kdev_to_i915(dev);
> > > > > + if (!i915) {
> > > > > + dev_err(dev, "DRM not initialized, aborting
> HDCP.\n");
> > > > > + return -ENODEV;
> > > > > + }
> > > > > +
> > > > > + pairing_info_in.header.api_version = HDCP_API_VERSION;
> > > > > + pairing_info_in.header.command_id =
> > > WIRED_AKE_SEND_PAIRING_INFO;
> > > > > + pairing_info_in.header.status = FW_HDCP_STATUS_SUCCESS;
> > > > > + pairing_info_in.header.buffer_len =
> > > > > +
> > > > > WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN;
> > > > > +
> > > > > + pairing_info_in.port.integrated_port_type = data->port_type;
> > > > > + pairing_info_in.port.physical_port = (u8)data->hdcp_ddi;
> > > > > + pairing_info_in.port.attached_transcoder =
> > > > > +(u8)data->hdcp_transcoder;
> > > > > +
> > > > > + memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km,
> > > > > + HDCP_2_2_E_KH_KM_LEN);
> > > > > +
> > > > > + byte = intel_hdcp_gsc_msg_send(i915, (u8
> *)&pairing_info_in,
> > > > > + sizeof(pairing_info_in),
> > > > > + (u8 *)&pairing_info_out,
> > > > > + sizeof(pairing_info_out));
> > > > > + if (byte < 0) {
> > > > > + drm_dbg_kms(&i915->drm,
> "intel_hdcp_gsc_msg_send
> > > failed.
> > > > > %zd\n", byte);
> > > > > + return byte;
> > > > > + }
> > > > > +
> > > > > + if (pairing_info_out.header.status !=
> FW_HDCP_STATUS_SUCCESS) {
> > > > > + drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed.
> Status:
> > > > > 0x%X\n",
> > > > > + WIRED_AKE_SEND_PAIRING_INFO,
> > > > > + pairing_info_out.header.status);
> > > > > + return -EIO;
> > > > > + }
> > > > > +
> > > > > + return 0;
> > > > > +}
> > > > > +
> > > > > +static int
> > > > > +gsc_hdcp_initiate_locality_check(struct device *dev,
> > > > > + struct hdcp_port_data *data,
> > > > > + struct hdcp2_lc_init *lc_init_data) {
> > > > > + struct wired_cmd_init_locality_check_in lc_init_in = { { 0 } };
> > > > > + struct wired_cmd_init_locality_check_out lc_init_out = { { 0 }
> };
> > > > > + struct drm_i915_private *i915;
> > > > > + ssize_t byte;
> > > > > +
> > > > > + if (!dev || !data || !lc_init_data)
> > > > > + return -EINVAL;
> > > > > +
> > > > > + i915 = kdev_to_i915(dev);
> > > > > + if (!i915) {
> > > > > + dev_err(dev, "DRM not initialized, aborting
> HDCP.\n");
> > > > > + return -ENODEV;
> > > > > + }
> > > > > +
> > > > > + lc_init_in.header.api_version = HDCP_API_VERSION;
> > > > > + lc_init_in.header.command_id =
> WIRED_INIT_LOCALITY_CHECK;
> > > > > + lc_init_in.header.status = FW_HDCP_STATUS_SUCCESS;
> > > > > + lc_init_in.header.buffer_len =
> > > > > +WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN;
> > > > > +
> > > > > + lc_init_in.port.integrated_port_type = data->port_type;
> > > > > + lc_init_in.port.physical_port = (u8)data->hdcp_ddi;
> > > > > + lc_init_in.port.attached_transcoder =
> > > > > +(u8)data->hdcp_transcoder;
> > > > > +
> > > > > + byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&lc_init_in,
> > > sizeof(lc_init_in),
> > > > > + (u8 *)&lc_init_out,
> sizeof(lc_init_out));
> > > > > + if (byte < 0) {
> > > > > + drm_dbg_kms(&i915->drm,
> "intel_hdcp_gsc_msg_send
> > > failed.
> > > > > %zd\n", byte);
> > > > > + return byte;
> > > > > + }
> > > > > +
> > > > > + if (lc_init_out.header.status != FW_HDCP_STATUS_SUCCESS) {
> > > > > + drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed.
> status:
> > > > > 0x%X\n",
> > > > > + WIRED_INIT_LOCALITY_CHECK,
> > > > > lc_init_out.header.status);
> > > > > + return -EIO;
> > > > > + }
> > > > > +
> > > > > + lc_init_data->msg_id = HDCP_2_2_LC_INIT;
> > > > > + memcpy(lc_init_data->r_n, lc_init_out.r_n,
> HDCP_2_2_RN_LEN);
> > > > > +
> > > > > + return 0;
> > > > > +}
> > > > > +
> > > > > +static int
> > > > > +gsc_hdcp_verify_lprime(struct device *dev, struct
> > > > > +hdcp_port_data
> > > *data,
> > > > > + struct hdcp2_lc_send_lprime *rx_lprime) {
> > > > > + struct wired_cmd_validate_locality_in verify_lprime_in = { { 0
> } };
> > > > > + struct wired_cmd_validate_locality_out verify_lprime_out = {
> { 0 } };
> > > > > + struct drm_i915_private *i915;
> > > > > + ssize_t byte;
> > > > > +
> > > > > + if (!dev || !data || !rx_lprime)
> > > > > + return -EINVAL;
> > > > > +
> > > > > + i915 = kdev_to_i915(dev);
> > > > > + if (!i915) {
> > > > > + dev_err(dev, "DRM not initialized, aborting
> HDCP.\n");
> > > > > + return -ENODEV;
> > > > > + }
> > > > > +
> > > > > + verify_lprime_in.header.api_version = HDCP_API_VERSION;
> > > > > + verify_lprime_in.header.command_id =
> > > WIRED_VALIDATE_LOCALITY;
> > > > > + verify_lprime_in.header.status =
> FW_HDCP_STATUS_SUCCESS;
> > > > > + verify_lprime_in.header.buffer_len =
> > > > > +
> > > > > WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN;
> > > > > +
> > > > > + verify_lprime_in.port.integrated_port_type = data-
> >port_type;
> > > > > + verify_lprime_in.port.physical_port = (u8)data->hdcp_ddi;
> > > > > + verify_lprime_in.port.attached_transcoder =
> > > > > +(u8)data->hdcp_transcoder;
> > > > > +
> > > > > + memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime,
> > > > > + HDCP_2_2_L_PRIME_LEN);
> > > > > +
> > > > > + byte = intel_hdcp_gsc_msg_send(i915, (u8
> *)&verify_lprime_in,
> > > > > + sizeof(verify_lprime_in),
> > > > > + (u8 *)&verify_lprime_out,
> > > > > + sizeof(verify_lprime_out));
> > > > > + if (byte < 0) {
> > > > > + drm_dbg_kms(&i915->drm,
> "intel_hdcp_gsc_msg_send
> > > failed.
> > > > > %zd\n", byte);
> > > > > + return byte;
> > > > > + }
> > > > > +
> > > > > + if (verify_lprime_out.header.status !=
> FW_HDCP_STATUS_SUCCESS)
> > > {
> > > > > + drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed.
> status:
> > > > > 0x%X\n",
> > > > > + WIRED_VALIDATE_LOCALITY,
> > > > > + verify_lprime_out.header.status);
> > > > > + return -EIO;
> > > > > + }
> > > > > +
> > > > > + return 0;
> > > > > +}
> > > > > +
> > > > > +static int gsc_hdcp_get_session_key(struct device *dev,
> > > > > + struct hdcp_port_data *data,
> > > > > + struct hdcp2_ske_send_eks
> *ske_data) {
> > > > > + struct wired_cmd_get_session_key_in get_skey_in = { { 0 } };
> > > > > + struct wired_cmd_get_session_key_out get_skey_out = { { 0 }
> };
> > > > > + struct drm_i915_private *i915;
> > > > > + ssize_t byte;
> > > > > +
> > > > > + if (!dev || !data || !ske_data)
> > > > > + return -EINVAL;
> > > > > +
> > > > > + i915 = kdev_to_i915(dev);
> > > > > + if (!i915) {
> > > > > + dev_err(dev, "DRM not initialized, aborting
> HDCP.\n");
> > > > > + return -ENODEV;
> > > > > + }
> > > > > +
> > > > > + get_skey_in.header.api_version = HDCP_API_VERSION;
> > > > > + get_skey_in.header.command_id =
> WIRED_GET_SESSION_KEY;
> > > > > + get_skey_in.header.status = FW_HDCP_STATUS_SUCCESS;
> > > > > + get_skey_in.header.buffer_len =
> > > > > WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN;
> > > > > +
> > > > > + get_skey_in.port.integrated_port_type = data->port_type;
> > > > > + get_skey_in.port.physical_port = (u8)data->hdcp_ddi;
> > > > > + get_skey_in.port.attached_transcoder = (u8)data-
> > > >hdcp_transcoder;
> > > > > +
> > > > > + byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&get_skey_in,
> > > > > sizeof(get_skey_in),
> > > > > + (u8 *)&get_skey_out,
> > > sizeof(get_skey_out));
> > > > > + if (byte < 0) {
> > > > > + drm_dbg_kms(&i915->drm,
> "intel_hdcp_gsc_msg_send
> > > failed.
> > > > > %zd\n", byte);
> > > > > + return byte;
> > > > > + }
> > > > > +
> > > > > + if (get_skey_out.header.status !=
> FW_HDCP_STATUS_SUCCESS) {
> > > > > + drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed.
> status:
> > > > > 0x%X\n",
> > > > > + WIRED_GET_SESSION_KEY,
> > > get_skey_out.header.status);
> > > > > + return -EIO;
> > > > > + }
> > > > > +
> > > > > + ske_data->msg_id = HDCP_2_2_SKE_SEND_EKS;
> > > > > + memcpy(ske_data->e_dkey_ks, get_skey_out.e_dkey_ks,
> > > > > + HDCP_2_2_E_DKEY_KS_LEN);
> > > > > + memcpy(ske_data->riv, get_skey_out.r_iv,
> HDCP_2_2_RIV_LEN);
> > > > > +
> > > > > + return 0;
> > > > > +}
> > > > > +
> > > > > +static int
> > > > > +gsc_hdcp_repeater_check_flow_prepare_ack(struct device *dev,
> > > > > + struct hdcp_port_data *data,
> > > > > + struct
> > > hdcp2_rep_send_receiverid_list
> > > > > +
> *rep_topology,
> > > > > + struct hdcp2_rep_send_ack
> > > > > +
> *rep_send_ack)
> > > > > +{
> > > > > + struct wired_cmd_verify_repeater_in verify_repeater_in = { {
> 0 } };
> > > > > + struct wired_cmd_verify_repeater_out verify_repeater_out =
> { {
> > > > > +0 }
> > > };
> > > > > + struct drm_i915_private *i915;
> > > > > + ssize_t byte;
> > > > > +
> > > > > + if (!dev || !rep_topology || !rep_send_ack || !data)
> > > > > + return -EINVAL;
> > > > > +
> > > > > + i915 = kdev_to_i915(dev);
> > > > > + if (!i915) {
> > > > > + dev_err(dev, "DRM not initialized, aborting
> HDCP.\n");
> > > > > + return -ENODEV;
> > > > > + }
> > > > > +
> > > > > + verify_repeater_in.header.api_version =
> HDCP_API_VERSION;
> > > > > + verify_repeater_in.header.command_id =
> > > WIRED_VERIFY_REPEATER;
> > > > > + verify_repeater_in.header.status =
> FW_HDCP_STATUS_SUCCESS;
> > > > > + verify_repeater_in.header.buffer_len =
> > > > > +
> > > > > WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN;
> > > > > +
> > > > > + verify_repeater_in.port.integrated_port_type = data-
> >port_type;
> > > > > + verify_repeater_in.port.physical_port = (u8)data->hdcp_ddi;
> > > > > + verify_repeater_in.port.attached_transcoder =
> > > > > +(u8)data->hdcp_transcoder;
> > > > > +
> > > > > + memcpy(verify_repeater_in.rx_info, rep_topology->rx_info,
> > > > > + HDCP_2_2_RXINFO_LEN);
> > > > > + memcpy(verify_repeater_in.seq_num_v, rep_topology-
> > > >seq_num_v,
> > > > > + HDCP_2_2_SEQ_NUM_LEN);
> > > > > + memcpy(verify_repeater_in.v_prime, rep_topology-
> >v_prime,
> > > > > + HDCP_2_2_V_PRIME_HALF_LEN);
> > > > > + memcpy(verify_repeater_in.receiver_ids, rep_topology-
> > > >receiver_ids,
> > > > > + HDCP_2_2_RECEIVER_IDS_MAX_LEN);
> > > > > +
> > > > > + byte = intel_hdcp_gsc_msg_send(i915, (u8
> *)&verify_repeater_in,
> > > > > + sizeof(verify_repeater_in),
> > > > > + (u8 *)&verify_repeater_out,
> > > > > + sizeof(verify_repeater_out));
> > > > > + if (byte < 0) {
> > > > > + drm_dbg_kms(&i915->drm,
> "intel_hdcp_gsc_msg_send
> > > failed.
> > > > > %zd\n", byte);
> > > > > + return byte;
> > > > > + }
> > > > > +
> > > > > + if (verify_repeater_out.header.status !=
> > > FW_HDCP_STATUS_SUCCESS) {
> > > > > + drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed.
> status:
> > > > > 0x%X\n",
> > > > > + WIRED_VERIFY_REPEATER,
> > > > > + verify_repeater_out.header.status);
> > > > > + return -EIO;
> > > > > + }
> > > > > +
> > > > > + memcpy(rep_send_ack->v, verify_repeater_out.v,
> > > > > + HDCP_2_2_V_PRIME_HALF_LEN);
> > > > > + rep_send_ack->msg_id = HDCP_2_2_REP_SEND_ACK;
> > > > > +
> > > > > + return 0;
> > > > > +}
> > > > > +
> > > > > +static int gsc_hdcp_verify_mprime(struct device *dev,
> > > > > + struct hdcp_port_data *data,
> > > > > + struct hdcp2_rep_stream_ready
> > > *stream_ready) {
> > > > > + struct wired_cmd_repeater_auth_stream_req_in
> > > *verify_mprime_in;
> > > > > + struct wired_cmd_repeater_auth_stream_req_out
> > > > > + verify_mprime_out = { { 0 } };
> > > > > + struct drm_i915_private *i915;
> > > > > + ssize_t byte;
> > > > > + size_t cmd_size;
> > > > > +
> > > > > + if (!dev || !stream_ready || !data)
> > > > > + return -EINVAL;
> > > > > +
> > > > > + i915 = kdev_to_i915(dev);
> > > > > + if (!i915) {
> > > > > + dev_err(dev, "DRM not initialized, aborting
> HDCP.\n");
> > > > > + return -ENODEV;
> > > > > + }
> > > > > +
> > > > > + cmd_size = struct_size(verify_mprime_in, streams, data->k);
> > > > > + if (cmd_size == SIZE_MAX)
> > > > > + return -EINVAL;
> > > > > +
> > > > > + verify_mprime_in = kzalloc(cmd_size, GFP_KERNEL);
> > > > > + if (!verify_mprime_in)
> > > > > + return -ENOMEM;
> > > > > +
> > > > > + verify_mprime_in->header.api_version =
> HDCP_API_VERSION;
> > > > > + verify_mprime_in->header.command_id =
> > > > > WIRED_REPEATER_AUTH_STREAM_REQ;
> > > > > + verify_mprime_in->header.status =
> FW_HDCP_STATUS_SUCCESS;
> > > > > + verify_mprime_in->header.buffer_len = cmd_size -
> > > > > +sizeof(verify_mprime_in->header);
> > > > > +
> > > > > + verify_mprime_in->port.integrated_port_type = data-
> >port_type;
> > > > > + verify_mprime_in->port.physical_port = (u8)data->hdcp_ddi;
> > > > > + verify_mprime_in->port.attached_transcoder =
> > > > > +(u8)data->hdcp_transcoder;
> > > > > +
> > > > > + memcpy(verify_mprime_in->m_prime, stream_ready-
> >m_prime,
> > > > > HDCP_2_2_MPRIME_LEN);
> > > > > + drm_hdcp_cpu_to_be24(verify_mprime_in->seq_num_m,
> data-
> > > > > >seq_num_m);
> > > > > +
> > > > > + memcpy(verify_mprime_in->streams, data->streams,
> > > > > + array_size(data->k, sizeof(*data->streams)));
> > > > > +
> > > > > + verify_mprime_in->k = cpu_to_be16(data->k);
> > > > > +
> > > > > + byte = intel_hdcp_gsc_msg_send(i915, (u8
> *)verify_mprime_in,
> > > cmd_size,
> > > > > + (u8 *)&verify_mprime_out,
> > > > > + sizeof(verify_mprime_out));
> > > > > + kfree(verify_mprime_in);
> > > > > + if (byte < 0) {
> > > > > + drm_dbg_kms(&i915->drm,
> "intel_hdcp_gsc_msg_send
> > > failed.
> > > > > %zd\n", byte);
> > > > > + return byte;
> > > > > + }
> > > > > +
> > > > > + if (verify_mprime_out.header.status !=
> > > FW_HDCP_STATUS_SUCCESS) {
> > > > > + drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed.
> status:
> > > > > 0x%X\n",
> > > > > + WIRED_REPEATER_AUTH_STREAM_REQ,
> > > > > + verify_mprime_out.header.status);
> > > > > + return -EIO;
> > > > > + }
> > > > > +
> > > > > + return 0;
> > > > > +}
> > > > > +
> > > > > +static int gsc_hdcp_enable_authentication(struct device *dev,
> > > > > + struct hdcp_port_data
> *data) {
> > > > > + struct wired_cmd_enable_auth_in enable_auth_in = { { 0 } };
> > > > > + struct wired_cmd_enable_auth_out enable_auth_out = { { 0 }
> };
> > > > > + struct drm_i915_private *i915;
> > > > > + ssize_t byte;
> > > > > +
> > > > > + if (!dev || !data)
> > > > > + return -EINVAL;
> > > > > +
> > > > > + i915 = kdev_to_i915(dev);
> > > > > + if (!i915) {
> > > > > + dev_err(dev, "DRM not initialized, aborting
> HDCP.\n");
> > > > > + return -ENODEV;
> > > > > + }
> > > > > +
> > > > > + enable_auth_in.header.api_version = HDCP_API_VERSION;
> > > > > + enable_auth_in.header.command_id =
> WIRED_ENABLE_AUTH;
> > > > > + enable_auth_in.header.status =
> FW_HDCP_STATUS_SUCCESS;
> > > > > + enable_auth_in.header.buffer_len =
> > > > > WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN;
> > > > > +
> > > > > + enable_auth_in.port.integrated_port_type = data-
> >port_type;
> > > > > + enable_auth_in.port.physical_port = (u8)data->hdcp_ddi;
> > > > > + enable_auth_in.port.attached_transcoder = (u8)data-
> > > >hdcp_transcoder;
> > > > > + enable_auth_in.stream_type = data-
> >streams[0].stream_type;
> > > > > +
> > > > > + byte = intel_hdcp_gsc_msg_send(i915, (u8
> *)&enable_auth_in,
> > > > > + sizeof(enable_auth_in),
> > > > > + (u8 *)&enable_auth_out,
> > > > > + sizeof(enable_auth_out));
> > > > > + if (byte < 0) {
> > > > > + drm_dbg_kms(&i915->drm,
> "intel_hdcp_gsc_msg_send
> > > failed.
> > > > > %zd\n", byte);
> > > > > + return byte;
> > > > > + }
> > > > > +
> > > > > + if (enable_auth_out.header.status !=
> FW_HDCP_STATUS_SUCCESS)
> > > {
> > > > > + drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed.
> status:
> > > > > 0x%X\n",
> > > > > + WIRED_ENABLE_AUTH,
> > > enable_auth_out.header.status);
> > > > > + return -EIO;
> > > > > + }
> > > > > +
> > > > > + return 0;
> > > > > +}
> > > > > +
> > > > > +static int
> > > > > +gsc_hdcp_close_session(struct device *dev, struct
> > > > > +hdcp_port_data
> > > > > +*data) {
> > > > > + struct wired_cmd_close_session_in session_close_in = { { 0 }
> };
> > > > > + struct wired_cmd_close_session_out session_close_out = { {
> 0 } };
> > > > > + struct drm_i915_private *i915;
> > > > > + ssize_t byte;
> > > > > +
> > > > > + if (!dev || !data)
> > > > > + return -EINVAL;
> > > > > +
> > > > > + i915 = kdev_to_i915(dev);
> > > > > + if (!i915) {
> > > > > + dev_err(dev, "DRM not initialized, aborting
> HDCP.\n");
> > > > > + return -ENODEV;
> > > > > + }
> > > > > +
> > > > > + session_close_in.header.api_version = HDCP_API_VERSION;
> > > > > + session_close_in.header.command_id =
> WIRED_CLOSE_SESSION;
> > > > > + session_close_in.header.status =
> FW_HDCP_STATUS_SUCCESS;
> > > > > + session_close_in.header.buffer_len =
> > > > > +
> WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN;
> > > > > +
> > > > > + session_close_in.port.integrated_port_type = data-
> >port_type;
> > > > > + session_close_in.port.physical_port = (u8)data->hdcp_ddi;
> > > > > + session_close_in.port.attached_transcoder =
> > > > > +(u8)data->hdcp_transcoder;
> > > > > +
> > > > > + byte = intel_hdcp_gsc_msg_send(i915, (u8
> *)&session_close_in,
> > > > > + sizeof(session_close_in),
> > > > > + (u8 *)&session_close_out,
> > > > > + sizeof(session_close_out));
> > > > > + if (byte < 0) {
> > > > > + drm_dbg_kms(&i915->drm,
> "intel_hdcp_gsc_msg_send
> > > failed.
> > > > > %zd\n", byte);
> > > > > + return byte;
> > > > > + }
> > > > > +
> > > > > + if (session_close_out.header.status !=
> FW_HDCP_STATUS_SUCCESS)
> > > {
> > > > > + drm_dbg_kms(&i915->drm, "Session Close Failed.
> status:
> > > 0x%X\n",
> > > > > + session_close_out.header.status);
> > > > > + return -EIO;
> > > > > + }
> > > > > +
> > > > > + return 0;
> > > > > +}
> > > > > +
> > > > > +static const struct i915_hdcp_ops gsc_hdcp_ops = {
> > > > > + .initiate_hdcp2_session = gsc_hdcp_initiate_session,
> > > > > + .verify_receiver_cert_prepare_km =
> > > > > +
> gsc_hdcp_verify_receiver_cert_prepare_km,
> > > > > + .verify_hprime = gsc_hdcp_verify_hprime,
> > > > > + .store_pairing_info = gsc_hdcp_store_pairing_info,
> > > > > + .initiate_locality_check = gsc_hdcp_initiate_locality_check,
> > > > > + .verify_lprime = gsc_hdcp_verify_lprime,
> > > > > + .get_session_key = gsc_hdcp_get_session_key,
> > > > > + .repeater_check_flow_prepare_ack =
> > > > > +
> > > gsc_hdcp_repeater_check_flow_prepare_ack,
> > > > > + .verify_mprime = gsc_hdcp_verify_mprime,
> > > > > + .enable_hdcp_authentication =
> gsc_hdcp_enable_authentication,
> > > > > + .close_hdcp_session = gsc_hdcp_close_session, };
> > > > > +
> > > > > /*This function helps allocate memory for the command that we
> > > > > will send to gsc cs */ static int
> > > > > intel_hdcp_gsc_initialize_message(struct
> > > > drm_i915_private *i915,
> > > > > struct intel_hdcp_gsc_message
> > > > > *hdcp_message) @@ -58,7 +663,7 @@ static int
> > > > > intel_hdcp_gsc_initialize_message(struct drm_i915_private *i915,
> > > > > return err;
> > > > > }
> > > > >
> > > > > -int intel_hdcp_gsc_hdcp2_init(struct drm_i915_private *i915)
> > > > > +static int intel_hdcp_gsc_hdcp2_init(struct drm_i915_private
> > > > > +*i915)
> > > > > {
> > > > > struct intel_hdcp_gsc_message *hdcp_message;
> > > > > int ret;
> > > > > @@ -80,7 +685,7 @@ int intel_hdcp_gsc_hdcp2_init(struct
> > > > > drm_i915_private
> > > > *i915)
> > > > > return ret;
> > > > > }
> > > > >
> > > > > -void intel_hdcp_gsc_free_message(struct drm_i915_private *i915)
> > > > > +static void intel_hdcp_gsc_free_message(struct drm_i915_private
> > > > > +*i915)
> > > > > {
> > > > > struct intel_hdcp_gsc_message *hdcp_message =
> > > > > i915->display.hdcp.hdcp_message;
> > > @@ -
> > > > 89,6 +694,31 @@ void
> > > > > intel_hdcp_gsc_free_message(struct drm_i915_private
> > > > > *i915)
> > > > > kfree(hdcp_message);
> > > > > }
> > > > >
> > > > > +int intel_hdcp_gsc_init(struct drm_i915_private *i915) {
> > > > > + struct i915_hdcp_master *data;
> > > > > + int ret;
> > > > > +
> > > > > + data = kzalloc(sizeof(struct i915_hdcp_master), GFP_KERNEL);
> > > > > + if (!data)
> > > > > + return -ENOMEM;
> > > > > +
> > > > > + mutex_lock(&i915->display.hdcp.comp_mutex);
> > > > > + i915->display.hdcp.master = data;
> > > > > + i915->display.hdcp.master->hdcp_dev = i915->drm.dev;
> > > > > + i915->display.hdcp.master->ops = &gsc_hdcp_ops;
> > > > > + ret = intel_hdcp_gsc_hdcp2_init(i915);
> > > > > + mutex_unlock(&i915->display.hdcp.comp_mutex);
> > > > > +
> > > > > + return ret;
> > > > > +}
> > > > > +
> > > > > +void intel_hdcp_gsc_fini(struct drm_i915_private *i915) {
> > > > > + intel_hdcp_gsc_free_message(i915);
> > > > > + kfree(i915->display.hdcp.master); }
> > > > > +
> > > > > static int intel_gsc_send_sync(struct drm_i915_private *i915,
> > > > > struct intel_gsc_mtl_header *header, u64 addr,
> > > > > size_t msg_out_len)
> > > > > @@ -133,7 +763,8 @@ static int intel_gsc_send_sync(struct
> > > > > drm_i915_private *i915,
> > > > > * will follow
> > > > > */
> > > > > ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915,
> > > > > u8
> > > *msg_in,
> > > > > - size_t msg_in_len, u8 *msg_out,
> size_t
> > > > > msg_out_len)
> > > > > + size_t msg_in_len, u8 *msg_out,
> > > > > + size_t msg_out_len)
> > > > > {
> > > > > struct intel_gt *gt = i915->media_gt;
> > > > > struct intel_gsc_mtl_header *header; diff --git
> > > > > a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.h
> > > > > b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.h
> > > > > index 09ffd7ec02cd..5cc9fd2e88f6 100644
> > > > > --- a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.h
> > > > > +++ b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.h
> > > > > @@ -16,8 +16,11 @@ struct intel_hdcp_gsc_message {
> > > > > void *hdcp_cmd;
> > > > > };
> > > > >
> > > > > +bool intel_hdcp_gsc_cs_required(struct drm_i915_private *i915);
> > > > > ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915,
> > > > > u8
> > > *msg_in,
> > > > > size_t msg_in_len, u8 *msg_out,
> > > > > size_t msg_out_len);
> > > > > +int intel_hdcp_gsc_init(struct drm_i915_private *i915); void
> > > > > +intel_hdcp_gsc_fini(struct drm_i915_private *i915);
> > > > >
> > > > > #endif /* __INTEL_HDCP_GCS_H__ */
> > > > > --
> > > > > 2.25.1
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