832 lines
25 KiB
C
832 lines
25 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright 2023, Intel Corporation.
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*/
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#include <drm/i915_hdcp_interface.h>
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#include "gem/i915_gem_region.h"
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#include "gt/uc/intel_gsc_uc_heci_cmd_submit.h"
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#include "i915_drv.h"
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#include "i915_utils.h"
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#include "intel_hdcp_gsc.h"
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bool intel_hdcp_gsc_cs_required(struct drm_i915_private *i915)
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{
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return DISPLAY_VER(i915) >= 14;
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}
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static int
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gsc_hdcp_initiate_session(struct device *dev, struct hdcp_port_data *data,
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struct hdcp2_ake_init *ake_data)
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{
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struct wired_cmd_initiate_hdcp2_session_in session_init_in = { { 0 } };
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struct wired_cmd_initiate_hdcp2_session_out
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session_init_out = { { 0 } };
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struct drm_i915_private *i915;
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ssize_t byte;
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if (!dev || !data || !ake_data)
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return -EINVAL;
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i915 = kdev_to_i915(dev);
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if (!i915) {
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dev_err(dev, "DRM not initialized, aborting HDCP.\n");
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return -ENODEV;
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}
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session_init_in.header.api_version = HDCP_API_VERSION;
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session_init_in.header.command_id = WIRED_INITIATE_HDCP2_SESSION;
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session_init_in.header.status = FW_HDCP_STATUS_SUCCESS;
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session_init_in.header.buffer_len =
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WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN;
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session_init_in.port.integrated_port_type = data->port_type;
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session_init_in.port.physical_port = (u8)data->hdcp_ddi;
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session_init_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
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session_init_in.protocol = data->protocol;
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byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&session_init_in,
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sizeof(session_init_in),
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(u8 *)&session_init_out,
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sizeof(session_init_out));
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if (byte < 0) {
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drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
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return byte;
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}
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if (session_init_out.header.status != FW_HDCP_STATUS_SUCCESS) {
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drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed. Status: 0x%X\n",
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WIRED_INITIATE_HDCP2_SESSION,
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session_init_out.header.status);
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return -EIO;
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}
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ake_data->msg_id = HDCP_2_2_AKE_INIT;
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ake_data->tx_caps = session_init_out.tx_caps;
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memcpy(ake_data->r_tx, session_init_out.r_tx, HDCP_2_2_RTX_LEN);
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return 0;
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}
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static int
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gsc_hdcp_verify_receiver_cert_prepare_km(struct device *dev,
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struct hdcp_port_data *data,
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struct hdcp2_ake_send_cert *rx_cert,
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bool *km_stored,
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struct hdcp2_ake_no_stored_km
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*ek_pub_km,
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size_t *msg_sz)
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{
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struct wired_cmd_verify_receiver_cert_in verify_rxcert_in = { { 0 } };
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struct wired_cmd_verify_receiver_cert_out verify_rxcert_out = { { 0 } };
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struct drm_i915_private *i915;
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ssize_t byte;
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if (!dev || !data || !rx_cert || !km_stored || !ek_pub_km || !msg_sz)
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return -EINVAL;
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i915 = kdev_to_i915(dev);
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if (!i915) {
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dev_err(dev, "DRM not initialized, aborting HDCP.\n");
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return -ENODEV;
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}
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verify_rxcert_in.header.api_version = HDCP_API_VERSION;
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verify_rxcert_in.header.command_id = WIRED_VERIFY_RECEIVER_CERT;
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verify_rxcert_in.header.status = FW_HDCP_STATUS_SUCCESS;
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verify_rxcert_in.header.buffer_len =
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WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN;
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verify_rxcert_in.port.integrated_port_type = data->port_type;
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verify_rxcert_in.port.physical_port = (u8)data->hdcp_ddi;
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verify_rxcert_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
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verify_rxcert_in.cert_rx = rx_cert->cert_rx;
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memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx, HDCP_2_2_RRX_LEN);
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memcpy(verify_rxcert_in.rx_caps, rx_cert->rx_caps, HDCP_2_2_RXCAPS_LEN);
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byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&verify_rxcert_in,
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sizeof(verify_rxcert_in),
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(u8 *)&verify_rxcert_out,
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sizeof(verify_rxcert_out));
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if (byte < 0) {
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drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed: %zd\n", byte);
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return byte;
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}
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if (verify_rxcert_out.header.status != FW_HDCP_STATUS_SUCCESS) {
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drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed. Status: 0x%X\n",
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WIRED_VERIFY_RECEIVER_CERT,
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verify_rxcert_out.header.status);
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return -EIO;
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}
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*km_stored = !!verify_rxcert_out.km_stored;
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if (verify_rxcert_out.km_stored) {
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ek_pub_km->msg_id = HDCP_2_2_AKE_STORED_KM;
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*msg_sz = sizeof(struct hdcp2_ake_stored_km);
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} else {
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ek_pub_km->msg_id = HDCP_2_2_AKE_NO_STORED_KM;
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*msg_sz = sizeof(struct hdcp2_ake_no_stored_km);
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}
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memcpy(ek_pub_km->e_kpub_km, &verify_rxcert_out.ekm_buff,
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sizeof(verify_rxcert_out.ekm_buff));
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return 0;
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}
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static int
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gsc_hdcp_verify_hprime(struct device *dev, struct hdcp_port_data *data,
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struct hdcp2_ake_send_hprime *rx_hprime)
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{
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struct wired_cmd_ake_send_hprime_in send_hprime_in = { { 0 } };
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struct wired_cmd_ake_send_hprime_out send_hprime_out = { { 0 } };
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struct drm_i915_private *i915;
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ssize_t byte;
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if (!dev || !data || !rx_hprime)
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return -EINVAL;
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i915 = kdev_to_i915(dev);
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if (!i915) {
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dev_err(dev, "DRM not initialized, aborting HDCP.\n");
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return -ENODEV;
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}
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send_hprime_in.header.api_version = HDCP_API_VERSION;
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send_hprime_in.header.command_id = WIRED_AKE_SEND_HPRIME;
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send_hprime_in.header.status = FW_HDCP_STATUS_SUCCESS;
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send_hprime_in.header.buffer_len = WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN;
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send_hprime_in.port.integrated_port_type = data->port_type;
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send_hprime_in.port.physical_port = (u8)data->hdcp_ddi;
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send_hprime_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
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memcpy(send_hprime_in.h_prime, rx_hprime->h_prime,
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HDCP_2_2_H_PRIME_LEN);
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byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&send_hprime_in,
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sizeof(send_hprime_in),
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(u8 *)&send_hprime_out,
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sizeof(send_hprime_out));
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if (byte < 0) {
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drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
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return byte;
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}
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if (send_hprime_out.header.status != FW_HDCP_STATUS_SUCCESS) {
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drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed. Status: 0x%X\n",
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WIRED_AKE_SEND_HPRIME, send_hprime_out.header.status);
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return -EIO;
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}
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return 0;
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}
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static int
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gsc_hdcp_store_pairing_info(struct device *dev, struct hdcp_port_data *data,
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struct hdcp2_ake_send_pairing_info *pairing_info)
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{
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struct wired_cmd_ake_send_pairing_info_in pairing_info_in = { { 0 } };
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struct wired_cmd_ake_send_pairing_info_out pairing_info_out = { { 0 } };
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struct drm_i915_private *i915;
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ssize_t byte;
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if (!dev || !data || !pairing_info)
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return -EINVAL;
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i915 = kdev_to_i915(dev);
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if (!i915) {
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dev_err(dev, "DRM not initialized, aborting HDCP.\n");
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return -ENODEV;
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}
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pairing_info_in.header.api_version = HDCP_API_VERSION;
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pairing_info_in.header.command_id = WIRED_AKE_SEND_PAIRING_INFO;
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pairing_info_in.header.status = FW_HDCP_STATUS_SUCCESS;
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pairing_info_in.header.buffer_len =
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WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN;
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pairing_info_in.port.integrated_port_type = data->port_type;
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pairing_info_in.port.physical_port = (u8)data->hdcp_ddi;
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pairing_info_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
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memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km,
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HDCP_2_2_E_KH_KM_LEN);
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byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&pairing_info_in,
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sizeof(pairing_info_in),
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(u8 *)&pairing_info_out,
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sizeof(pairing_info_out));
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if (byte < 0) {
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drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
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return byte;
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}
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if (pairing_info_out.header.status != FW_HDCP_STATUS_SUCCESS) {
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drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. Status: 0x%X\n",
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WIRED_AKE_SEND_PAIRING_INFO,
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pairing_info_out.header.status);
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return -EIO;
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}
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return 0;
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}
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static int
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gsc_hdcp_initiate_locality_check(struct device *dev,
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struct hdcp_port_data *data,
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struct hdcp2_lc_init *lc_init_data)
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{
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struct wired_cmd_init_locality_check_in lc_init_in = { { 0 } };
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struct wired_cmd_init_locality_check_out lc_init_out = { { 0 } };
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struct drm_i915_private *i915;
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ssize_t byte;
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if (!dev || !data || !lc_init_data)
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return -EINVAL;
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i915 = kdev_to_i915(dev);
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if (!i915) {
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dev_err(dev, "DRM not initialized, aborting HDCP.\n");
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return -ENODEV;
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}
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lc_init_in.header.api_version = HDCP_API_VERSION;
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lc_init_in.header.command_id = WIRED_INIT_LOCALITY_CHECK;
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lc_init_in.header.status = FW_HDCP_STATUS_SUCCESS;
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lc_init_in.header.buffer_len = WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN;
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lc_init_in.port.integrated_port_type = data->port_type;
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lc_init_in.port.physical_port = (u8)data->hdcp_ddi;
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lc_init_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
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byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&lc_init_in, sizeof(lc_init_in),
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(u8 *)&lc_init_out, sizeof(lc_init_out));
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if (byte < 0) {
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drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
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return byte;
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}
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if (lc_init_out.header.status != FW_HDCP_STATUS_SUCCESS) {
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drm_dbg_kms(&i915->drm, "FW cmd 0x%08X Failed. status: 0x%X\n",
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WIRED_INIT_LOCALITY_CHECK, lc_init_out.header.status);
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return -EIO;
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}
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lc_init_data->msg_id = HDCP_2_2_LC_INIT;
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memcpy(lc_init_data->r_n, lc_init_out.r_n, HDCP_2_2_RN_LEN);
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return 0;
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}
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static int
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gsc_hdcp_verify_lprime(struct device *dev, struct hdcp_port_data *data,
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struct hdcp2_lc_send_lprime *rx_lprime)
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{
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struct wired_cmd_validate_locality_in verify_lprime_in = { { 0 } };
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struct wired_cmd_validate_locality_out verify_lprime_out = { { 0 } };
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struct drm_i915_private *i915;
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ssize_t byte;
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if (!dev || !data || !rx_lprime)
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return -EINVAL;
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i915 = kdev_to_i915(dev);
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if (!i915) {
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dev_err(dev, "DRM not initialized, aborting HDCP.\n");
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return -ENODEV;
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}
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verify_lprime_in.header.api_version = HDCP_API_VERSION;
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verify_lprime_in.header.command_id = WIRED_VALIDATE_LOCALITY;
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verify_lprime_in.header.status = FW_HDCP_STATUS_SUCCESS;
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verify_lprime_in.header.buffer_len =
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WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN;
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verify_lprime_in.port.integrated_port_type = data->port_type;
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verify_lprime_in.port.physical_port = (u8)data->hdcp_ddi;
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verify_lprime_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
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memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime,
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HDCP_2_2_L_PRIME_LEN);
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byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&verify_lprime_in,
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sizeof(verify_lprime_in),
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(u8 *)&verify_lprime_out,
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sizeof(verify_lprime_out));
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if (byte < 0) {
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drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
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return byte;
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}
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if (verify_lprime_out.header.status != FW_HDCP_STATUS_SUCCESS) {
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drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. status: 0x%X\n",
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WIRED_VALIDATE_LOCALITY,
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verify_lprime_out.header.status);
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return -EIO;
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}
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return 0;
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}
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static int gsc_hdcp_get_session_key(struct device *dev,
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struct hdcp_port_data *data,
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struct hdcp2_ske_send_eks *ske_data)
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{
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struct wired_cmd_get_session_key_in get_skey_in = { { 0 } };
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struct wired_cmd_get_session_key_out get_skey_out = { { 0 } };
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struct drm_i915_private *i915;
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ssize_t byte;
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if (!dev || !data || !ske_data)
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return -EINVAL;
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i915 = kdev_to_i915(dev);
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if (!i915) {
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dev_err(dev, "DRM not initialized, aborting HDCP.\n");
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return -ENODEV;
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}
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get_skey_in.header.api_version = HDCP_API_VERSION;
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get_skey_in.header.command_id = WIRED_GET_SESSION_KEY;
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get_skey_in.header.status = FW_HDCP_STATUS_SUCCESS;
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get_skey_in.header.buffer_len = WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN;
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get_skey_in.port.integrated_port_type = data->port_type;
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get_skey_in.port.physical_port = (u8)data->hdcp_ddi;
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get_skey_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
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byte = intel_hdcp_gsc_msg_send(i915, (u8 *)&get_skey_in, sizeof(get_skey_in),
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(u8 *)&get_skey_out, sizeof(get_skey_out));
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if (byte < 0) {
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drm_dbg_kms(&i915->drm, "intel_hdcp_gsc_msg_send failed. %zd\n", byte);
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return byte;
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}
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if (get_skey_out.header.status != FW_HDCP_STATUS_SUCCESS) {
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drm_dbg_kms(&i915->drm, "FW cmd 0x%08X failed. status: 0x%X\n",
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WIRED_GET_SESSION_KEY, get_skey_out.header.status);
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return -EIO;
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}
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ske_data->msg_id = HDCP_2_2_SKE_SEND_EKS;
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memcpy(ske_data->e_dkey_ks, get_skey_out.e_dkey_ks,
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HDCP_2_2_E_DKEY_KS_LEN);
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memcpy(ske_data->riv, get_skey_out.r_iv, HDCP_2_2_RIV_LEN);
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return 0;
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}
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static int
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gsc_hdcp_repeater_check_flow_prepare_ack(struct device *dev,
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struct hdcp_port_data *data,
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struct hdcp2_rep_send_receiverid_list
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*rep_topology,
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struct hdcp2_rep_send_ack
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*rep_send_ack)
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{
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struct wired_cmd_verify_repeater_in verify_repeater_in = { { 0 } };
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struct wired_cmd_verify_repeater_out verify_repeater_out = { { 0 } };
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struct drm_i915_private *i915;
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ssize_t byte;
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if (!dev || !rep_topology || !rep_send_ack || !data)
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return -EINVAL;
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i915 = kdev_to_i915(dev);
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if (!i915) {
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dev_err(dev, "DRM not initialized, aborting HDCP.\n");
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return -ENODEV;
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}
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verify_repeater_in.header.api_version = HDCP_API_VERSION;
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verify_repeater_in.header.command_id = WIRED_VERIFY_REPEATER;
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verify_repeater_in.header.status = FW_HDCP_STATUS_SUCCESS;
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verify_repeater_in.header.buffer_len =
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WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN;
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verify_repeater_in.port.integrated_port_type = data->port_type;
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verify_repeater_in.port.physical_port = (u8)data->hdcp_ddi;
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verify_repeater_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
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memcpy(verify_repeater_in.rx_info, rep_topology->rx_info,
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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)
|
|
{
|
|
struct intel_gt *gt = i915->media_gt;
|
|
struct drm_i915_gem_object *obj = NULL;
|
|
struct i915_vma *vma = NULL;
|
|
void *cmd;
|
|
int err;
|
|
|
|
/* allocate object of one page for HDCP command memory and store it */
|
|
obj = i915_gem_object_create_shmem(i915, PAGE_SIZE);
|
|
|
|
if (IS_ERR(obj)) {
|
|
drm_err(&i915->drm, "Failed to allocate HDCP streaming command!\n");
|
|
return PTR_ERR(obj);
|
|
}
|
|
|
|
cmd = i915_gem_object_pin_map_unlocked(obj, i915_coherent_map_type(i915, obj, true));
|
|
if (IS_ERR(cmd)) {
|
|
drm_err(&i915->drm, "Failed to map gsc message page!\n");
|
|
err = PTR_ERR(cmd);
|
|
goto out_unpin;
|
|
}
|
|
|
|
vma = i915_vma_instance(obj, >->ggtt->vm, NULL);
|
|
if (IS_ERR(vma)) {
|
|
err = PTR_ERR(vma);
|
|
goto out_unmap;
|
|
}
|
|
|
|
err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL);
|
|
if (err)
|
|
goto out_unmap;
|
|
|
|
memset(cmd, 0, obj->base.size);
|
|
|
|
hdcp_message->hdcp_cmd = cmd;
|
|
hdcp_message->vma = vma;
|
|
|
|
return 0;
|
|
|
|
out_unmap:
|
|
i915_gem_object_unpin_map(obj);
|
|
out_unpin:
|
|
i915_gem_object_put(obj);
|
|
return err;
|
|
}
|
|
|
|
static int intel_hdcp_gsc_hdcp2_init(struct drm_i915_private *i915)
|
|
{
|
|
struct intel_hdcp_gsc_message *hdcp_message;
|
|
int ret;
|
|
|
|
hdcp_message = kzalloc(sizeof(*hdcp_message), GFP_KERNEL);
|
|
|
|
if (!hdcp_message)
|
|
return -ENOMEM;
|
|
|
|
/*
|
|
* NOTE: No need to lock the comp mutex here as it is already
|
|
* going to be taken before this function called
|
|
*/
|
|
i915->display.hdcp.hdcp_message = hdcp_message;
|
|
ret = intel_hdcp_gsc_initialize_message(i915, hdcp_message);
|
|
|
|
if (ret)
|
|
drm_err(&i915->drm, "Could not initialize hdcp_message\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void intel_hdcp_gsc_free_message(struct drm_i915_private *i915)
|
|
{
|
|
struct intel_hdcp_gsc_message *hdcp_message =
|
|
i915->display.hdcp.hdcp_message;
|
|
|
|
i915_vma_unpin_and_release(&hdcp_message->vma, I915_VMA_RELEASE_MAP);
|
|
kfree(hdcp_message);
|
|
}
|
|
|
|
int intel_hdcp_gsc_init(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_hdcp_arbiter *data;
|
|
int ret;
|
|
|
|
data = kzalloc(sizeof(struct i915_hdcp_arbiter), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
mutex_lock(&i915->display.hdcp.hdcp_mutex);
|
|
i915->display.hdcp.arbiter = data;
|
|
i915->display.hdcp.arbiter->hdcp_dev = i915->drm.dev;
|
|
i915->display.hdcp.arbiter->ops = &gsc_hdcp_ops;
|
|
ret = intel_hdcp_gsc_hdcp2_init(i915);
|
|
mutex_unlock(&i915->display.hdcp.hdcp_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void intel_hdcp_gsc_fini(struct drm_i915_private *i915)
|
|
{
|
|
intel_hdcp_gsc_free_message(i915);
|
|
kfree(i915->display.hdcp.arbiter);
|
|
}
|
|
|
|
static int intel_gsc_send_sync(struct drm_i915_private *i915,
|
|
struct intel_gsc_mtl_header *header, u64 addr,
|
|
size_t msg_out_len)
|
|
{
|
|
struct intel_gt *gt = i915->media_gt;
|
|
int ret;
|
|
|
|
header->flags = 0;
|
|
ret = intel_gsc_uc_heci_cmd_submit_packet(>->uc.gsc, addr,
|
|
header->message_size,
|
|
addr,
|
|
msg_out_len + sizeof(*header));
|
|
if (ret) {
|
|
drm_err(&i915->drm, "failed to send gsc HDCP msg (%d)\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Checking validity marker for memory sanity
|
|
*/
|
|
if (header->validity_marker != GSC_HECI_VALIDITY_MARKER) {
|
|
drm_err(&i915->drm, "invalid validity marker\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (header->status != 0) {
|
|
drm_err(&i915->drm, "header status indicates error %d\n",
|
|
header->status);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (header->flags & GSC_OUTFLAG_MSG_PENDING)
|
|
return -EAGAIN;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function can now be used for sending requests and will also handle
|
|
* receipt of reply messages hence no different function of message retrieval
|
|
* is required. We will initialize intel_hdcp_gsc_message structure then add
|
|
* gsc cs memory header as stated in specs after which the normal HDCP payload
|
|
* 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)
|
|
{
|
|
struct intel_gt *gt = i915->media_gt;
|
|
struct intel_gsc_mtl_header *header;
|
|
const size_t max_msg_size = PAGE_SIZE - sizeof(*header);
|
|
struct intel_hdcp_gsc_message *hdcp_message;
|
|
u64 addr, host_session_id;
|
|
u32 reply_size, msg_size;
|
|
int ret, tries = 0;
|
|
|
|
if (!intel_uc_uses_gsc_uc(>->uc))
|
|
return -ENODEV;
|
|
|
|
if (msg_in_len > max_msg_size || msg_out_len > max_msg_size)
|
|
return -ENOSPC;
|
|
|
|
hdcp_message = i915->display.hdcp.hdcp_message;
|
|
header = hdcp_message->hdcp_cmd;
|
|
addr = i915_ggtt_offset(hdcp_message->vma);
|
|
|
|
msg_size = msg_in_len + sizeof(*header);
|
|
memset(header, 0, msg_size);
|
|
get_random_bytes(&host_session_id, sizeof(u64));
|
|
intel_gsc_uc_heci_cmd_emit_mtl_header(header, HECI_MEADDRESS_HDCP,
|
|
msg_size, host_session_id);
|
|
memcpy(hdcp_message->hdcp_cmd + sizeof(*header), msg_in, msg_in_len);
|
|
|
|
/*
|
|
* Keep sending request in case the pending bit is set no need to add
|
|
* message handle as we are using same address hence loc. of header is
|
|
* same and it will contain the message handle. we will send the message
|
|
* 20 times each message 50 ms apart
|
|
*/
|
|
do {
|
|
ret = intel_gsc_send_sync(i915, header, addr, msg_out_len);
|
|
|
|
/* Only try again if gsc says so */
|
|
if (ret != -EAGAIN)
|
|
break;
|
|
|
|
msleep(50);
|
|
|
|
} while (++tries < 20);
|
|
|
|
if (ret)
|
|
goto err;
|
|
|
|
/* we use the same mem for the reply, so header is in the same loc */
|
|
reply_size = header->message_size - sizeof(*header);
|
|
if (reply_size > msg_out_len) {
|
|
drm_warn(&i915->drm, "caller with insufficient HDCP reply size %u (%d)\n",
|
|
reply_size, (u32)msg_out_len);
|
|
reply_size = msg_out_len;
|
|
} else if (reply_size != msg_out_len) {
|
|
drm_dbg_kms(&i915->drm, "caller unexpected HCDP reply size %u (%d)\n",
|
|
reply_size, (u32)msg_out_len);
|
|
}
|
|
|
|
memcpy(msg_out, hdcp_message->hdcp_cmd + sizeof(*header), msg_out_len);
|
|
|
|
err:
|
|
return ret;
|
|
}
|