[Intel-gfx] [PATCH v4 7/7] drm/i915/mtl: Add HDCP GSC interface
Suraj Kandpal
suraj.kandpal at intel.com
Thu Dec 22 06:43:55 UTC 2022
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
--v3
-abstract DISPLAY_VER check [Jani]
-bring function declaration and definition in same patch[Jani]
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>
---
drivers/gpu/drm/i915/display/intel_hdcp.c | 28 +-
drivers/gpu/drm/i915/display/intel_hdcp_gsc.c | 513 +++++++++++++++++-
drivers/gpu/drm/i915/display/intel_hdcp_gsc.h | 5 +-
3 files changed, 537 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index a0f978e56879..0fef4a4356ea 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -25,6 +25,8 @@
#include "intel_hdcp.h"
#include "intel_hdcp_regs.h"
#include "intel_pcode.h"
+#include "intel_connector.h"
+#include "intel_hdcp_gsc.h"
#define KEY_LOAD_TRIES 5
#define HDCP2_LC_RETRY_CNT 3
@@ -203,13 +205,20 @@ 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 (DISPLAY_VER(dev_priv) >= 14)
+ 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);
@@ -2235,7 +2244,7 @@ static int initialize_hdcp_port_data(struct intel_connector *connector,
static bool is_hdcp2_supported(struct drm_i915_private *dev_priv)
{
- if (!IS_ENABLED(CONFIG_INTEL_MEI_HDCP))
+ if (intel_hdcp_gsc_cs_required(dev_priv) && !IS_ENABLED(CONFIG_INTEL_MEI_HDCP))
return false;
return (DISPLAY_VER(dev_priv) >= 10 ||
@@ -2256,10 +2265,14 @@ 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_component_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_component_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 +2499,10 @@ 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_component_ops);
+ if (intel_hdcp_gsc_cs_required(dev_priv))
+ intel_hdcp_gsc_fini(dev_priv);
+ else
+ component_del(dev_priv->drm.dev, &i915_hdcp_component_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 913696fbc5df..a5c288522572 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c
@@ -1,8 +1,10 @@
// SPDX-License-Identifier: MIT
/*
- * Copyright 2021, Intel Corporation.
+ * Copyright 2022, 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"
@@ -15,6 +17,512 @@ struct intel_hdcp_gsc_message {
void *hdcp_cmd;
};
+bool intel_hdcp_gsc_cs_required(struct drm_i915_private *i915)
+{
+ if (DISPLAY_VER(i915) >= 14)
+ return true;
+ return false;
+}
+
+static int
+gsc_hdcp_initiate_session(struct device *dev, struct hdcp_port_data *data,
+ struct hdcp2_ake_init *ake_data)
+{
+ 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;
+ }
+
+ i915_hdcp_fill_session_in(&session_init_in, data);
+ 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;
+ }
+
+ i915_hdcp_fill_rxcert_in(&verify_rxcert_in, rx_cert, data);
+ 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;
+ }
+
+ i915_hdcp_fill_hprime_in(&send_hprime_in, rx_hprime, data);
+ 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;
+ }
+
+ i915_hdcp_fill_pairing_info_in(&pairing_info_in, pairing_info,
+ data);
+ 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;
+ }
+
+ i915_hdcp_fill_locality_check_in(&lc_init_in, data);
+ 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;
+ }
+
+ i915_hdcp_fill_validate_locality_in(&verify_lprime_in, rx_lprime,
+ data);
+ 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;
+ }
+
+ i915_hdcp_fill_session_key_in(&get_skey_in, data);
+ 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;
+ }
+
+ i915_hdcp_fill_repeater_in(&verify_repeater_in, rep_topology, data);
+ 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;
+
+ i915_hdcp_fill_auth_stream_req_in(verify_mprime_in, stream_ready,
+ cmd_size, data);
+ 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;
+ }
+
+ i915_hdcp_fill_enable_auth_in(&enable_auth_in, data);
+ 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;
+ }
+
+ i915_hdcp_fill_close_session_in(&session_close_in, data);
+ 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,
+};
+
+int intel_hdcp_gsc_init(struct drm_i915_private *i915)
+{
+ struct i915_hdcp_master *data;
+
+ 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;
+ mutex_unlock(&i915->display.hdcp.comp_mutex);
+
+ return 0;
+}
+
+int intel_hdcp_gsc_fini(struct drm_i915_private *i915)
+{
+ /* TODO: decrease GSC f/w reference count. */
+ kfree(i915->display.hdcp.master);
+ return 0;
+}
+
/*This function helps allocate memory for the command that we will send to gsc cs */
static int intel_initialize_hdcp_gsc_message(struct drm_i915_private *i915,
struct intel_hdcp_gsc_message *hdcp_message)
@@ -128,7 +636,8 @@ 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 8f2563ab958b..1ce71729d6f9 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.h
+++ b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.h
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT */
/*
- * Copyright © 2021 Intel Corporation
+ * Copyright © 2022 Intel Corporation
*/
#ifndef __INTEL_HDCP_GSC_H__
@@ -11,8 +11,11 @@
struct drm_i915_private;
+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);
+int intel_hdcp_gsc_fini(struct drm_i915_private *i915);
#endif /* __INTEL_HDCP_GCS_H__ */
--
2.25.1
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