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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-02-28 12:55:40 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-02-28 12:55:40 +0100
commitf699f9f9ac87f0c774cbf3b9d4b8f336221f3a88 (patch)
tree53268396c7dee052dfc0026257c30888a7654606 /drivers/misc/mei
parentb39e557b7762498c7038ccd49dbdee88b2d00043 (diff)
parentfa301ad9fa8f6f738b9c22da3ede7824e3286693 (diff)
Merge tag 'topic/mei-hdcp-2019-02-26' of git://anongit.freedesktop.org/drm/drm-intel into char-misc-next
Daniel writes: mei-hdcp driver mei driver for the me hdcp client, for use by drm/i915. Including the following prep work: - whitelist hdcp client in mei bus - merge to include char-misc-next - drm/i915 side of the mei_hdcp/i915 component interface - component prep work (including one patch touching i915&snd-hda) * tag 'topic/mei-hdcp-2019-02-26' of git://anongit.freedesktop.org/drm/drm-intel: (23 commits) misc/mei/hdcp: Component framework for I915 Interface misc/mei/hdcp: Closing wired HDCP2.2 Tx Session misc/mei/hdcp: Enabling the HDCP authentication misc/mei/hdcp: Verify M_prime misc/mei/hdcp: Repeater topology verification and ack misc/mei/hdcp: Prepare Session Key misc/mei/hdcp: Verify L_prime misc/mei/hdcp: Initiate Locality check misc/mei/hdcp: Store the HDCP Pairing info misc/mei/hdcp: Verify H_prime misc/mei/hdcp: Verify Receiver Cert and prepare km misc/mei/hdcp: Initiate Wired HDCP2.2 Tx Session misc/mei/hdcp: Define ME FW interface for HDCP2.2 misc/mei/hdcp: Client driver for HDCP application mei: bus: whitelist hdcp client drm/audio: declaration of struct device drm: helper functions for hdcp2 seq_num to from u32 drm/i915: MEI interface definition drm/i915: header for i915 - MEI_HDCP interface drm/i915: enum port definition is moved into i915_drm.h ...
Diffstat (limited to 'drivers/misc/mei')
-rw-r--r--drivers/misc/mei/Kconfig10
-rw-r--r--drivers/misc/mei/Makefile2
-rw-r--r--drivers/misc/mei/bus-fixup.c16
-rw-r--r--drivers/misc/mei/hdcp/Makefile7
-rw-r--r--drivers/misc/mei/hdcp/mei_hdcp.c849
-rw-r--r--drivers/misc/mei/hdcp/mei_hdcp.h377
6 files changed, 1261 insertions, 0 deletions
diff --git a/drivers/misc/mei/Kconfig b/drivers/misc/mei/Kconfig
index c49e1d2269af..74e2c667dce0 100644
--- a/drivers/misc/mei/Kconfig
+++ b/drivers/misc/mei/Kconfig
@@ -43,3 +43,13 @@ config INTEL_MEI_TXE
Supported SoCs:
Intel Bay Trail
+
+config INTEL_MEI_HDCP
+ tristate "Intel HDCP2.2 services of ME Interface"
+ select INTEL_MEI_ME
+ depends on DRM_I915
+ help
+ MEI Support for HDCP2.2 Services on Intel platforms.
+
+ Enables the ME FW services required for HDCP2.2 support through
+ I915 display driver of Intel.
diff --git a/drivers/misc/mei/Makefile b/drivers/misc/mei/Makefile
index d9215fc4e499..8c2d9565a4cb 100644
--- a/drivers/misc/mei/Makefile
+++ b/drivers/misc/mei/Makefile
@@ -24,3 +24,5 @@ mei-txe-objs += hw-txe.o
mei-$(CONFIG_EVENT_TRACING) += mei-trace.o
CFLAGS_mei-trace.o = -I$(src)
+
+obj-$(CONFIG_INTEL_MEI_HDCP) += hdcp/
diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c
index 80215c312f0e..5fcac02233af 100644
--- a/drivers/misc/mei/bus-fixup.c
+++ b/drivers/misc/mei/bus-fixup.c
@@ -40,6 +40,9 @@ static const uuid_le mei_nfc_info_guid = MEI_UUID_NFC_INFO;
#define MEI_UUID_MKHIF_FIX UUID_LE(0x55213584, 0x9a29, 0x4916, \
0xba, 0xdf, 0xf, 0xb7, 0xed, 0x68, 0x2a, 0xeb)
+#define MEI_UUID_HDCP UUID_LE(0xB638AB7E, 0x94E2, 0x4EA2, \
+ 0xA5, 0x52, 0xD1, 0xC5, 0x4B, 0x62, 0x7F, 0x04)
+
#define MEI_UUID_ANY NULL_UUID_LE
/**
@@ -71,6 +74,18 @@ static void blacklist(struct mei_cl_device *cldev)
cldev->do_match = 0;
}
+/**
+ * whitelist - forcefully whitelist client
+ *
+ * @cldev: me clients device
+ */
+static void whitelist(struct mei_cl_device *cldev)
+{
+ dev_dbg(&cldev->dev, "running hook %s\n", __func__);
+
+ cldev->do_match = 1;
+}
+
#define OSTYPE_LINUX 2
struct mei_os_ver {
__le16 build;
@@ -472,6 +487,7 @@ static struct mei_fixup {
MEI_FIXUP(MEI_UUID_NFC_HCI, mei_nfc),
MEI_FIXUP(MEI_UUID_WD, mei_wd),
MEI_FIXUP(MEI_UUID_MKHIF_FIX, mei_mkhi_fix),
+ MEI_FIXUP(MEI_UUID_HDCP, whitelist),
};
/**
diff --git a/drivers/misc/mei/hdcp/Makefile b/drivers/misc/mei/hdcp/Makefile
new file mode 100644
index 000000000000..adbe7506282d
--- /dev/null
+++ b/drivers/misc/mei/hdcp/Makefile
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (c) 2019, Intel Corporation.
+#
+# Makefile - HDCP client driver for Intel MEI Bus Driver.
+
+obj-$(CONFIG_INTEL_MEI_HDCP) += mei_hdcp.o
diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c b/drivers/misc/mei/hdcp/mei_hdcp.c
new file mode 100644
index 000000000000..90b6ae8e9dae
--- /dev/null
+++ b/drivers/misc/mei/hdcp/mei_hdcp.c
@@ -0,0 +1,849 @@
+// SPDX-License-Identifier: (GPL-2.0)
+/*
+ * Copyright © 2019 Intel Corporation
+ *
+ * Mei_hdcp.c: HDCP client driver for mei bus
+ *
+ * Author:
+ * Ramalingam C <ramalingam.c@intel.com>
+ */
+
+/**
+ * DOC: MEI_HDCP Client Driver
+ *
+ * This is a client driver to the mei_bus to make the HDCP2.2 services of
+ * ME FW available for the interested consumers like I915.
+ *
+ * This module will act as a translation layer between HDCP protocol
+ * implementor(I915) and ME FW by translating HDCP2.2 authentication
+ * messages to ME FW command payloads and vice versa.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/uuid.h>
+#include <linux/mei_cl_bus.h>
+#include <linux/component.h>
+#include <drm/drm_connector.h>
+#include <drm/i915_component.h>
+#include <drm/i915_mei_hdcp_interface.h>
+
+#include "mei_hdcp.h"
+
+static inline u8 mei_get_ddi_index(enum port port)
+{
+ switch (port) {
+ case PORT_A:
+ return MEI_DDI_A;
+ case PORT_B ... PORT_F:
+ return (u8)port;
+ default:
+ return MEI_DDI_INVALID_PORT;
+ }
+}
+
+/**
+ * mei_hdcp_initiate_session() - Initiate a Wired HDCP2.2 Tx Session in ME FW
+ * @dev: device corresponding to the mei_cl_device
+ * @data: Intel HW specific hdcp data
+ * @ake_data: AKE_Init msg output.
+ *
+ * Return: 0 on Success, <0 on Failure.
+ */
+static int
+mei_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 mei_cl_device *cldev;
+ ssize_t byte;
+
+ if (!dev || !data || !ake_data)
+ return -EINVAL;
+
+ cldev = to_mei_cl_device(dev);
+
+ session_init_in.header.api_version = HDCP_API_VERSION;
+ session_init_in.header.command_id = WIRED_INITIATE_HDCP2_SESSION;
+ session_init_in.header.status = ME_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 = mei_get_ddi_index(data->port);
+ session_init_in.protocol = data->protocol;
+
+ byte = mei_cldev_send(cldev, (u8 *)&session_init_in,
+ sizeof(session_init_in));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
+ return byte;
+ }
+
+ byte = mei_cldev_recv(cldev, (u8 *)&session_init_out,
+ sizeof(session_init_out));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_recv failed. %zd\n", byte);
+ return byte;
+ }
+
+ if (session_init_out.header.status != ME_HDCP_STATUS_SUCCESS) {
+ dev_dbg(dev, "ME 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;
+}
+
+/**
+ * mei_hdcp_verify_receiver_cert_prepare_km() - Verify the Receiver Certificate
+ * AKE_Send_Cert and prepare AKE_Stored_Km/AKE_No_Stored_Km
+ * @dev: device corresponding to the mei_cl_device
+ * @data: Intel HW specific hdcp data
+ * @rx_cert: AKE_Send_Cert for verification
+ * @km_stored: Pairing status flag output
+ * @ek_pub_km: AKE_Stored_Km/AKE_No_Stored_Km output msg
+ * @msg_sz : size of AKE_XXXXX_Km output msg
+ *
+ * Return: 0 on Success, <0 on Failure
+ */
+static int
+mei_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 mei_cl_device *cldev;
+ ssize_t byte;
+
+ if (!dev || !data || !rx_cert || !km_stored || !ek_pub_km || !msg_sz)
+ return -EINVAL;
+
+ cldev = to_mei_cl_device(dev);
+
+ verify_rxcert_in.header.api_version = HDCP_API_VERSION;
+ verify_rxcert_in.header.command_id = WIRED_VERIFY_RECEIVER_CERT;
+ verify_rxcert_in.header.status = ME_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 = mei_get_ddi_index(data->port);
+
+ 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 = mei_cldev_send(cldev, (u8 *)&verify_rxcert_in,
+ sizeof(verify_rxcert_in));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_send failed: %zd\n", byte);
+ return byte;
+ }
+
+ byte = mei_cldev_recv(cldev, (u8 *)&verify_rxcert_out,
+ sizeof(verify_rxcert_out));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_recv failed: %zd\n", byte);
+ return byte;
+ }
+
+ if (verify_rxcert_out.header.status != ME_HDCP_STATUS_SUCCESS) {
+ dev_dbg(dev, "ME 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;
+}
+
+/**
+ * mei_hdcp_verify_hprime() - Verify AKE_Send_H_prime at ME FW.
+ * @dev: device corresponding to the mei_cl_device
+ * @data: Intel HW specific hdcp data
+ * @rx_hprime: AKE_Send_H_prime msg for ME FW verification
+ *
+ * Return: 0 on Success, <0 on Failure
+ */
+static int
+mei_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 mei_cl_device *cldev;
+ ssize_t byte;
+
+ if (!dev || !data || !rx_hprime)
+ return -EINVAL;
+
+ cldev = to_mei_cl_device(dev);
+
+ send_hprime_in.header.api_version = HDCP_API_VERSION;
+ send_hprime_in.header.command_id = WIRED_AKE_SEND_HPRIME;
+ send_hprime_in.header.status = ME_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 = mei_get_ddi_index(data->port);
+
+ memcpy(send_hprime_in.h_prime, rx_hprime->h_prime,
+ HDCP_2_2_H_PRIME_LEN);
+
+ byte = mei_cldev_send(cldev, (u8 *)&send_hprime_in,
+ sizeof(send_hprime_in));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
+ return byte;
+ }
+
+ byte = mei_cldev_recv(cldev, (u8 *)&send_hprime_out,
+ sizeof(send_hprime_out));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_recv failed. %zd\n", byte);
+ return byte;
+ }
+
+ if (send_hprime_out.header.status != ME_HDCP_STATUS_SUCCESS) {
+ dev_dbg(dev, "ME cmd 0x%08X Failed. Status: 0x%X\n",
+ WIRED_AKE_SEND_HPRIME, send_hprime_out.header.status);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/**
+ * mei_hdcp_store_pairing_info() - Store pairing info received at ME FW
+ * @dev: device corresponding to the mei_cl_device
+ * @data: Intel HW specific hdcp data
+ * @pairing_info: AKE_Send_Pairing_Info msg input to ME FW
+ *
+ * Return: 0 on Success, <0 on Failure
+ */
+static int
+mei_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 mei_cl_device *cldev;
+ ssize_t byte;
+
+ if (!dev || !data || !pairing_info)
+ return -EINVAL;
+
+ cldev = to_mei_cl_device(dev);
+
+ 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 = ME_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 = mei_get_ddi_index(data->port);
+
+ memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km,
+ HDCP_2_2_E_KH_KM_LEN);
+
+ byte = mei_cldev_send(cldev, (u8 *)&pairing_info_in,
+ sizeof(pairing_info_in));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
+ return byte;
+ }
+
+ byte = mei_cldev_recv(cldev, (u8 *)&pairing_info_out,
+ sizeof(pairing_info_out));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_recv failed. %zd\n", byte);
+ return byte;
+ }
+
+ if (pairing_info_out.header.status != ME_HDCP_STATUS_SUCCESS) {
+ dev_dbg(dev, "ME cmd 0x%08X failed. Status: 0x%X\n",
+ WIRED_AKE_SEND_PAIRING_INFO,
+ pairing_info_out.header.status);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/**
+ * mei_hdcp_initiate_locality_check() - Prepare LC_Init
+ * @dev: device corresponding to the mei_cl_device
+ * @data: Intel HW specific hdcp data
+ * @lc_init_data: LC_Init msg output
+ *
+ * Return: 0 on Success, <0 on Failure
+ */
+static int
+mei_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 mei_cl_device *cldev;
+ ssize_t byte;
+
+ if (!dev || !data || !lc_init_data)
+ return -EINVAL;
+
+ cldev = to_mei_cl_device(dev);
+
+ lc_init_in.header.api_version = HDCP_API_VERSION;
+ lc_init_in.header.command_id = WIRED_INIT_LOCALITY_CHECK;
+ lc_init_in.header.status = ME_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 = mei_get_ddi_index(data->port);
+
+ byte = mei_cldev_send(cldev, (u8 *)&lc_init_in, sizeof(lc_init_in));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
+ return byte;
+ }
+
+ byte = mei_cldev_recv(cldev, (u8 *)&lc_init_out, sizeof(lc_init_out));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_recv failed. %zd\n", byte);
+ return byte;
+ }
+
+ if (lc_init_out.header.status != ME_HDCP_STATUS_SUCCESS) {
+ dev_dbg(dev, "ME 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;
+}
+
+/**
+ * mei_hdcp_verify_lprime() - Verify lprime.
+ * @dev: device corresponding to the mei_cl_device
+ * @data: Intel HW specific hdcp data
+ * @rx_lprime: LC_Send_L_prime msg for ME FW verification
+ *
+ * Return: 0 on Success, <0 on Failure
+ */
+static int
+mei_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 mei_cl_device *cldev;
+ ssize_t byte;
+
+ if (!dev || !data || !rx_lprime)
+ return -EINVAL;
+
+ cldev = to_mei_cl_device(dev);
+
+ verify_lprime_in.header.api_version = HDCP_API_VERSION;
+ verify_lprime_in.header.command_id = WIRED_VALIDATE_LOCALITY;
+ verify_lprime_in.header.status = ME_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 = mei_get_ddi_index(data->port);
+
+ memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime,
+ HDCP_2_2_L_PRIME_LEN);
+
+ byte = mei_cldev_send(cldev, (u8 *)&verify_lprime_in,
+ sizeof(verify_lprime_in));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
+ return byte;
+ }
+
+ byte = mei_cldev_recv(cldev, (u8 *)&verify_lprime_out,
+ sizeof(verify_lprime_out));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_recv failed. %zd\n", byte);
+ return byte;
+ }
+
+ if (verify_lprime_out.header.status != ME_HDCP_STATUS_SUCCESS) {
+ dev_dbg(dev, "ME cmd 0x%08X failed. status: 0x%X\n",
+ WIRED_VALIDATE_LOCALITY,
+ verify_lprime_out.header.status);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/**
+ * mei_hdcp_get_session_key() - Prepare SKE_Send_Eks.
+ * @dev: device corresponding to the mei_cl_device
+ * @data: Intel HW specific hdcp data
+ * @ske_data: SKE_Send_Eks msg output from ME FW.
+ *
+ * Return: 0 on Success, <0 on Failure
+ */
+static int mei_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 mei_cl_device *cldev;
+ ssize_t byte;
+
+ if (!dev || !data || !ske_data)
+ return -EINVAL;
+
+ cldev = to_mei_cl_device(dev);
+
+ get_skey_in.header.api_version = HDCP_API_VERSION;
+ get_skey_in.header.command_id = WIRED_GET_SESSION_KEY;
+ get_skey_in.header.status = ME_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 = mei_get_ddi_index(data->port);
+
+ byte = mei_cldev_send(cldev, (u8 *)&get_skey_in, sizeof(get_skey_in));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
+ return byte;
+ }
+
+ byte = mei_cldev_recv(cldev, (u8 *)&get_skey_out, sizeof(get_skey_out));
+
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_recv failed. %zd\n", byte);
+ return byte;
+ }
+
+ if (get_skey_out.header.status != ME_HDCP_STATUS_SUCCESS) {
+ dev_dbg(dev, "ME 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;
+}
+
+/**
+ * mei_hdcp_repeater_check_flow_prepare_ack() - Validate the Downstream topology
+ * and prepare rep_ack.
+ * @dev: device corresponding to the mei_cl_device
+ * @data: Intel HW specific hdcp data
+ * @rep_topology: Receiver ID List to be validated
+ * @rep_send_ack : repeater ack from ME FW.
+ *
+ * Return: 0 on Success, <0 on Failure
+ */
+static int
+mei_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 mei_cl_device *cldev;
+ ssize_t byte;
+
+ if (!dev || !rep_topology || !rep_send_ack || !data)
+ return -EINVAL;
+
+ cldev = to_mei_cl_device(dev);
+
+ verify_repeater_in.header.api_version = HDCP_API_VERSION;
+ verify_repeater_in.header.command_id = WIRED_VERIFY_REPEATER;
+ verify_repeater_in.header.status = ME_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 = mei_get_ddi_index(data->port);
+
+ 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 = mei_cldev_send(cldev, (u8 *)&verify_repeater_in,
+ sizeof(verify_repeater_in));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
+ return byte;
+ }
+
+ byte = mei_cldev_recv(cldev, (u8 *)&verify_repeater_out,
+ sizeof(verify_repeater_out));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_recv failed. %zd\n", byte);
+ return byte;
+ }
+
+ if (verify_repeater_out.header.status != ME_HDCP_STATUS_SUCCESS) {
+ dev_dbg(dev, "ME 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;
+}
+
+/**
+ * mei_hdcp_verify_mprime() - Verify mprime.
+ * @dev: device corresponding to the mei_cl_device
+ * @data: Intel HW specific hdcp data
+ * @stream_ready: RepeaterAuth_Stream_Ready msg for ME FW verification.
+ *
+ * Return: 0 on Success, <0 on Failure
+ */
+static int mei_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 = { { 0 } };
+ struct wired_cmd_repeater_auth_stream_req_out
+ verify_mprime_out = { { 0 } };
+ struct mei_cl_device *cldev;
+ ssize_t byte;
+
+ if (!dev || !stream_ready || !data)
+ return -EINVAL;
+
+ cldev = to_mei_cl_device(dev);
+
+ 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 = ME_HDCP_STATUS_SUCCESS;
+ verify_mprime_in.header.buffer_len =
+ WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN;
+
+ verify_mprime_in.port.integrated_port_type = data->port_type;
+ verify_mprime_in.port.physical_port = mei_get_ddi_index(data->port);
+
+ memcpy(verify_mprime_in.m_prime, stream_ready->m_prime,
+ HDCP_2_2_MPRIME_LEN);
+ drm_hdcp2_u32_to_seq_num(verify_mprime_in.seq_num_m, data->seq_num_m);
+ memcpy(verify_mprime_in.streams, data->streams,
+ (data->k * sizeof(struct hdcp2_streamid_type)));
+
+ verify_mprime_in.k = cpu_to_be16(data->k);
+
+ byte = mei_cldev_send(cldev, (u8 *)&verify_mprime_in,
+ sizeof(verify_mprime_in));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
+ return byte;
+ }
+
+ byte = mei_cldev_recv(cldev, (u8 *)&verify_mprime_out,
+ sizeof(verify_mprime_out));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_recv failed. %zd\n", byte);
+ return byte;
+ }
+
+ if (verify_mprime_out.header.status != ME_HDCP_STATUS_SUCCESS) {
+ dev_dbg(dev, "ME cmd 0x%08X failed. status: 0x%X\n",
+ WIRED_REPEATER_AUTH_STREAM_REQ,
+ verify_mprime_out.header.status);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/**
+ * mei_hdcp_enable_authentication() - Mark a port as authenticated
+ * through ME FW
+ * @dev: device corresponding to the mei_cl_device
+ * @data: Intel HW specific hdcp data
+ *
+ * Return: 0 on Success, <0 on Failure
+ */
+static int mei_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 mei_cl_device *cldev;
+ ssize_t byte;
+
+ if (!dev || !data)
+ return -EINVAL;
+
+ cldev = to_mei_cl_device(dev);
+
+ enable_auth_in.header.api_version = HDCP_API_VERSION;
+ enable_auth_in.header.command_id = WIRED_ENABLE_AUTH;
+ enable_auth_in.header.status = ME_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 = mei_get_ddi_index(data->port);
+ enable_auth_in.stream_type = data->streams[0].stream_type;
+
+ byte = mei_cldev_send(cldev, (u8 *)&enable_auth_in,
+ sizeof(enable_auth_in));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
+ return byte;
+ }
+
+ byte = mei_cldev_recv(cldev, (u8 *)&enable_auth_out,
+ sizeof(enable_auth_out));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_recv failed. %zd\n", byte);
+ return byte;
+ }
+
+ if (enable_auth_out.header.status != ME_HDCP_STATUS_SUCCESS) {
+ dev_dbg(dev, "ME cmd 0x%08X failed. status: 0x%X\n",
+ WIRED_ENABLE_AUTH, enable_auth_out.header.status);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/**
+ * mei_hdcp_close_session() - Close the Wired HDCP Tx session of ME FW per port.
+ * This also disables the authenticated state of the port.
+ * @dev: device corresponding to the mei_cl_device
+ * @data: Intel HW specific hdcp data
+ *
+ * Return: 0 on Success, <0 on Failure
+ */
+static int
+mei_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 mei_cl_device *cldev;
+ ssize_t byte;
+
+ if (!dev || !data)
+ return -EINVAL;
+
+ cldev = to_mei_cl_device(dev);
+
+ session_close_in.header.api_version = HDCP_API_VERSION;
+ session_close_in.header.command_id = WIRED_CLOSE_SESSION;
+ session_close_in.header.status = ME_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 = mei_get_ddi_index(data->port);
+
+ byte = mei_cldev_send(cldev, (u8 *)&session_close_in,
+ sizeof(session_close_in));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_send failed. %zd\n", byte);
+ return byte;
+ }
+
+ byte = mei_cldev_recv(cldev, (u8 *)&session_close_out,
+ sizeof(session_close_out));
+ if (byte < 0) {
+ dev_dbg(dev, "mei_cldev_recv failed. %zd\n", byte);
+ return byte;
+ }
+
+ if (session_close_out.header.status != ME_HDCP_STATUS_SUCCESS) {
+ dev_dbg(dev, "Session Close Failed. status: 0x%X\n",
+ session_close_out.header.status);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static const struct i915_hdcp_component_ops mei_hdcp_ops = {
+ .owner = THIS_MODULE,
+ .initiate_hdcp2_session = mei_hdcp_initiate_session,
+ .verify_receiver_cert_prepare_km =
+ mei_hdcp_verify_receiver_cert_prepare_km,
+ .verify_hprime = mei_hdcp_verify_hprime,
+ .store_pairing_info = mei_hdcp_store_pairing_info,
+ .initiate_locality_check = mei_hdcp_initiate_locality_check,
+ .verify_lprime = mei_hdcp_verify_lprime,
+ .get_session_key = mei_hdcp_get_session_key,
+ .repeater_check_flow_prepare_ack =
+ mei_hdcp_repeater_check_flow_prepare_ack,
+ .verify_mprime = mei_hdcp_verify_mprime,
+ .enable_hdcp_authentication = mei_hdcp_enable_authentication,
+ .close_hdcp_session = mei_hdcp_close_session,
+};
+
+static int mei_component_master_bind(struct device *dev)
+{
+ struct mei_cl_device *cldev = to_mei_cl_device(dev);
+ struct i915_hdcp_comp_master *comp_master =
+ mei_cldev_get_drvdata(cldev);
+ int ret;
+
+ dev_dbg(dev, "%s\n", __func__);
+ comp_master->ops = &mei_hdcp_ops;
+ comp_master->mei_dev = dev;
+ ret = component_bind_all(dev, comp_master);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static void mei_component_master_unbind(struct device *dev)
+{
+ struct mei_cl_device *cldev = to_mei_cl_device(dev);
+ struct i915_hdcp_comp_master *comp_master =
+ mei_cldev_get_drvdata(cldev);
+
+ dev_dbg(dev, "%s\n", __func__);
+ component_unbind_all(dev, comp_master);
+}
+
+static const struct component_master_ops mei_component_master_ops = {
+ .bind = mei_component_master_bind,
+ .unbind = mei_component_master_unbind,
+};
+
+static int mei_hdcp_component_match(struct device *dev, int subcomponent,
+ void *data)
+{
+ return !strcmp(dev->driver->name, "i915") &&
+ subcomponent == I915_COMPONENT_HDCP;
+}
+
+static int mei_hdcp_probe(struct mei_cl_device *cldev,
+ const struct mei_cl_device_id *id)
+{
+ struct i915_hdcp_comp_master *comp_master;
+ struct component_match *master_match;
+ int ret;
+
+ ret = mei_cldev_enable(cldev);
+ if (ret < 0) {
+ dev_err(&cldev->dev, "mei_cldev_enable Failed. %d\n", ret);
+ goto enable_err_exit;
+ }
+
+ comp_master = kzalloc(sizeof(*comp_master), GFP_KERNEL);
+ if (!comp_master) {
+ ret = -ENOMEM;
+ goto err_exit;
+ }
+
+ master_match = NULL;
+ component_match_add_typed(&cldev->dev, &master_match,
+ mei_hdcp_component_match, comp_master);
+ if (IS_ERR_OR_NULL(master_match)) {
+ ret = -ENOMEM;
+ goto err_exit;
+ }
+
+ mei_cldev_set_drvdata(cldev, comp_master);
+ ret = component_master_add_with_match(&cldev->dev,
+ &mei_component_master_ops,
+ master_match);
+ if (ret < 0) {
+ dev_err(&cldev->dev, "Master comp add failed %d\n", ret);
+ goto err_exit;
+ }
+
+ return 0;
+
+err_exit:
+ mei_cldev_set_drvdata(cldev, NULL);
+ kfree(comp_master);
+ mei_cldev_disable(cldev);
+enable_err_exit:
+ return ret;
+}
+
+static int mei_hdcp_remove(struct mei_cl_device *cldev)
+{
+ struct i915_hdcp_comp_master *comp_master =
+ mei_cldev_get_drvdata(cldev);
+
+ component_master_del(&cldev->dev, &mei_component_master_ops);
+ kfree(comp_master);
+ mei_cldev_set_drvdata(cldev, NULL);
+
+ return mei_cldev_disable(cldev);
+}
+
+#define MEI_UUID_HDCP GUID_INIT(0xB638AB7E, 0x94E2, 0x4EA2, 0xA5, \
+ 0x52, 0xD1, 0xC5, 0x4B, 0x62, 0x7F, 0x04)
+
+static struct mei_cl_device_id mei_hdcp_tbl[] = {
+ { .uuid = MEI_UUID_HDCP, .version = MEI_CL_VERSION_ANY },
+ { }
+};
+MODULE_DEVICE_TABLE(mei, mei_hdcp_tbl);
+
+static struct mei_cl_driver mei_hdcp_driver = {
+ .id_table = mei_hdcp_tbl,
+ .name = KBUILD_MODNAME,
+ .probe = mei_hdcp_probe,
+ .remove = mei_hdcp_remove,
+};
+
+module_mei_cl_driver(mei_hdcp_driver);
+
+MODULE_AUTHOR("Intel Corporation");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("MEI HDCP");
diff --git a/drivers/misc/mei/hdcp/mei_hdcp.h b/drivers/misc/mei/hdcp/mei_hdcp.h
new file mode 100644
index 000000000000..5f74b908e486
--- /dev/null
+++ b/drivers/misc/mei/hdcp/mei_hdcp.h
@@ -0,0 +1,377 @@
+/* SPDX-License-Identifier: (GPL-2.0+) */
+/*
+ * Copyright © 2019 Intel Corporation
+ *
+ * Authors:
+ * Ramalingam C <ramalingam.c@intel.com>
+ */
+
+#ifndef __MEI_HDCP_H__
+#define __MEI_HDCP_H__
+
+#include <drm/drm_hdcp.h>
+
+/* me_hdcp_status: Enumeration of all HDCP Status Codes */
+enum me_hdcp_status {
+ ME_HDCP_STATUS_SUCCESS = 0x0000,
+
+ /* WiDi Generic Status Codes */
+ ME_HDCP_STATUS_INTERNAL_ERROR = 0x1000,
+ ME_HDCP_STATUS_UNKNOWN_ERROR = 0x1001,
+ ME_HDCP_STATUS_INCORRECT_API_VERSION = 0x1002,
+ ME_HDCP_STATUS_INVALID_FUNCTION = 0x1003,
+ ME_HDCP_STATUS_INVALID_BUFFER_LENGTH = 0x1004,
+ ME_HDCP_STATUS_INVALID_PARAMS = 0x1005,
+ ME_HDCP_STATUS_AUTHENTICATION_FAILED = 0x1006,
+
+ /* WiDi Status Codes */
+ ME_HDCP_INVALID_SESSION_STATE = 0x6000,
+ ME_HDCP_SRM_FRAGMENT_UNEXPECTED = 0x6001,
+ ME_HDCP_SRM_INVALID_LENGTH = 0x6002,
+ ME_HDCP_SRM_FRAGMENT_OFFSET_INVALID = 0x6003,
+ ME_HDCP_SRM_VERIFICATION_FAILED = 0x6004,
+ ME_HDCP_SRM_VERSION_TOO_OLD = 0x6005,
+ ME_HDCP_RX_CERT_VERIFICATION_FAILED = 0x6006,
+ ME_HDCP_RX_REVOKED = 0x6007,
+ ME_HDCP_H_VERIFICATION_FAILED = 0x6008,
+ ME_HDCP_REPEATER_CHECK_UNEXPECTED = 0x6009,
+ ME_HDCP_TOPOLOGY_MAX_EXCEEDED = 0x600A,
+ ME_HDCP_V_VERIFICATION_FAILED = 0x600B,
+ ME_HDCP_L_VERIFICATION_FAILED = 0x600C,
+ ME_HDCP_STREAM_KEY_ALLOC_FAILED = 0x600D,
+ ME_HDCP_BASE_KEY_RESET_FAILED = 0x600E,
+ ME_HDCP_NONCE_GENERATION_FAILED = 0x600F,
+ ME_HDCP_STATUS_INVALID_E_KEY_STATE = 0x6010,
+ ME_HDCP_STATUS_INVALID_CS_ICV = 0x6011,
+ ME_HDCP_STATUS_INVALID_KB_KEY_STATE = 0x6012,
+ ME_HDCP_STATUS_INVALID_PAVP_MODE_ICV = 0x6013,
+ ME_HDCP_STATUS_INVALID_PAVP_MODE = 0x6014,
+ ME_HDCP_STATUS_LC_MAX_ATTEMPTS = 0x6015,
+
+ /* New status for HDCP 2.1 */
+ ME_HDCP_STATUS_MISMATCH_IN_M = 0x6016,
+
+ /* New status code for HDCP 2.2 Rx */
+ ME_HDCP_STATUS_RX_PROV_NOT_ALLOWED = 0x6017,
+ ME_HDCP_STATUS_RX_PROV_WRONG_SUBJECT = 0x6018,
+ ME_HDCP_RX_NEEDS_PROVISIONING = 0x6019,
+ ME_HDCP_BKSV_ICV_AUTH_FAILED = 0x6020,
+ ME_HDCP_STATUS_INVALID_STREAM_ID = 0x6021,
+ ME_HDCP_STATUS_CHAIN_NOT_INITIALIZED = 0x6022,
+ ME_HDCP_FAIL_NOT_EXPECTED = 0x6023,
+ ME_HDCP_FAIL_HDCP_OFF = 0x6024,
+ ME_HDCP_FAIL_INVALID_PAVP_MEMORY_MODE = 0x6025,
+ ME_HDCP_FAIL_AES_ECB_FAILURE = 0x6026,
+ ME_HDCP_FEATURE_NOT_SUPPORTED = 0x6027,
+ ME_HDCP_DMA_READ_ERROR = 0x6028,
+ ME_HDCP_DMA_WRITE_ERROR = 0x6029,
+ ME_HDCP_FAIL_INVALID_PACKET_SIZE = 0x6030,
+ ME_HDCP_H264_PARSING_ERROR = 0x6031,
+ ME_HDCP_HDCP2_ERRATA_VIDEO_VIOLATION = 0x6032,
+ ME_HDCP_HDCP2_ERRATA_AUDIO_VIOLATION = 0x6033,
+ ME_HDCP_TX_ACTIVE_ERROR = 0x6034,
+ ME_HDCP_MODE_CHANGE_ERROR = 0x6035,
+ ME_HDCP_STREAM_TYPE_ERROR = 0x6036,
+ ME_HDCP_STREAM_MANAGE_NOT_POSSIBLE = 0x6037,
+
+ ME_HDCP_STATUS_PORT_INVALID_COMMAND = 0x6038,
+ ME_HDCP_STATUS_UNSUPPORTED_PROTOCOL = 0x6039,
+ ME_HDCP_STATUS_INVALID_PORT_INDEX = 0x603a,
+ ME_HDCP_STATUS_TX_AUTH_NEEDED = 0x603b,
+ ME_HDCP_STATUS_NOT_INTEGRATED_PORT = 0x603c,
+ ME_HDCP_STATUS_SESSION_MAX_REACHED = 0x603d,
+
+ /* hdcp capable bit is not set in rx_caps(error is unique to DP) */
+ ME_HDCP_STATUS_NOT_HDCP_CAPABLE = 0x6041,
+
+ ME_HDCP_STATUS_INVALID_STREAM_COUNT = 0x6042,
+};
+
+#define HDCP_API_VERSION 0x00010000
+
+#define HDCP_M_LEN 16
+#define HDCP_KH_LEN 16
+
+/* Payload Buffer size(Excluding Header) for CMDs and corresponding response */
+/* Wired_Tx_AKE */
+#define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN (4 + 1)
+#define WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_OUT (4 + 8 + 3)
+
+#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN (4 + 522 + 8 + 3)
+#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MIN_OUT (4 + 1 + 3 + 16 + 16)
+#define WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MAX_OUT (4 + 1 + 3 + 128)
+
+#define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN (4 + 32)
+#define WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_OUT (4)
+
+#define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN (4 + 16)
+#define WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_OUT (4)
+
+#define WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN (4)
+#define WIRED_CMD_BUF_LEN_CLOSE_SESSION_OUT (4)
+
+/* Wired_Tx_LC */
+#define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN (4)
+#define WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_OUT (4 + 8)
+
+#define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN (4 + 32)
+#define WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_OUT (4)
+
+/* Wired_Tx_SKE */
+#define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN (4)
+#define WIRED_CMD_BUF_LEN_GET_SESSION_KEY_OUT (4 + 16 + 8)
+
+/* Wired_Tx_SKE */
+#define WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN (4 + 1)
+#define WIRED_CMD_BUF_LEN_ENABLE_AUTH_OUT (4)
+
+/* Wired_Tx_Repeater */
+#define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN (4 + 2 + 3 + 16 + 155)
+#define WIRED_CMD_BUF_LEN_VERIFY_REPEATER_OUT (4 + 1 + 16)
+
+#define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN (4 + 3 + \
+ 32 + 2 + 2)
+
+#define WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_OUT (4)
+
+/* hdcp_command_id: Enumeration of all WIRED HDCP Command IDs */
+enum hdcp_command_id {
+ _WIDI_COMMAND_BASE = 0x00030000,
+ WIDI_INITIATE_HDCP2_SESSION = _WIDI_COMMAND_BASE,
+ HDCP_GET_SRM_STATUS,
+ HDCP_SEND_SRM_FRAGMENT,
+
+ /* The wired HDCP Tx commands */
+ _WIRED_COMMAND_BASE = 0x00031000,
+ WIRED_INITIATE_HDCP2_SESSION = _WIRED_COMMAND_BASE,
+ WIRED_VERIFY_RECEIVER_CERT,
+ WIRED_AKE_SEND_HPRIME,
+ WIRED_AKE_SEND_PAIRING_INFO,
+ WIRED_INIT_LOCALITY_CHECK,
+ WIRED_VALIDATE_LOCALITY,
+ WIRED_GET_SESSION_KEY,
+ WIRED_ENABLE_AUTH,
+ WIRED_VERIFY_REPEATER,
+ WIRED_REPEATER_AUTH_STREAM_REQ,
+ WIRED_CLOSE_SESSION,
+
+ _WIRED_COMMANDS_COUNT,
+};
+
+union encrypted_buff {
+ u8 e_kpub_km[HDCP_2_2_E_KPUB_KM_LEN];
+ u8 e_kh_km_m[HDCP_2_2_E_KH_KM_M_LEN];
+ struct {
+ u8 e_kh_km[HDCP_KH_LEN];
+ u8 m[HDCP_M_LEN];
+ } __packed;
+};
+
+/* HDCP HECI message header. All header values are little endian. */
+struct hdcp_cmd_header {
+ u32 api_version;
+ u32 command_id;
+ enum me_hdcp_status status;
+ /* Length of the HECI message (excluding the header) */
+ u32 buffer_len;
+} __packed;
+
+/* Empty command request or response. No data follows the header. */
+struct hdcp_cmd_no_data {
+ struct hdcp_cmd_header header;
+} __packed;
+
+/* Uniquely identifies the hdcp port being addressed for a given command. */
+struct hdcp_port_id {
+ u8 integrated_port_type;
+ u8 physical_port;
+ u16 reserved;
+} __packed;
+
+/*
+ * Data structures for integrated wired HDCP2 Tx in
+ * support of the AKE protocol
+ */
+/* HECI struct for integrated wired HDCP Tx session initiation. */
+struct wired_cmd_initiate_hdcp2_session_in {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+ u8 protocol; /* for HDMI vs DP */
+} __packed;
+
+struct wired_cmd_initiate_hdcp2_session_out {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+ u8 r_tx[HDCP_2_2_RTX_LEN];
+ struct hdcp2_tx_caps tx_caps;
+} __packed;
+
+/* HECI struct for ending an integrated wired HDCP Tx session. */
+struct wired_cmd_close_session_in {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+} __packed;
+
+struct wired_cmd_close_session_out {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+} __packed;
+
+/* HECI struct for integrated wired HDCP Tx Rx Cert verification. */
+struct wired_cmd_verify_receiver_cert_in {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+ struct hdcp2_cert_rx cert_rx;
+ u8 r_rx[HDCP_2_2_RRX_LEN];
+ u8 rx_caps[HDCP_2_2_RXCAPS_LEN];
+} __packed;
+
+struct wired_cmd_verify_receiver_cert_out {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+ u8 km_stored;
+ u8 reserved[3];
+ union encrypted_buff ekm_buff;
+} __packed;
+
+/* HECI struct for verification of Rx's Hprime in a HDCP Tx session */
+struct wired_cmd_ake_send_hprime_in {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+ u8 h_prime[HDCP_2_2_H_PRIME_LEN];
+} __packed;
+
+struct wired_cmd_ake_send_hprime_out {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+} __packed;
+
+/*
+ * HECI struct for sending in AKE pairing data generated by the Rx in an
+ * integrated wired HDCP Tx session.
+ */
+struct wired_cmd_ake_send_pairing_info_in {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+ u8 e_kh_km[HDCP_2_2_E_KH_KM_LEN];
+} __packed;
+
+struct wired_cmd_ake_send_pairing_info_out {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+} __packed;
+
+/* Data structures for integrated wired HDCP2 Tx in support of the LC protocol*/
+/*
+ * HECI struct for initiating locality check with an
+ * integrated wired HDCP Tx session.
+ */
+struct wired_cmd_init_locality_check_in {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+} __packed;
+
+struct wired_cmd_init_locality_check_out {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+ u8 r_n[HDCP_2_2_RN_LEN];
+} __packed;
+
+/*
+ * HECI struct for validating an Rx's LPrime value in an
+ * integrated wired HDCP Tx session.
+ */
+struct wired_cmd_validate_locality_in {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+ u8 l_prime[HDCP_2_2_L_PRIME_LEN];
+} __packed;
+
+struct wired_cmd_validate_locality_out {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+} __packed;
+
+/*
+ * Data structures for integrated wired HDCP2 Tx in support of the
+ * SKE protocol
+ */
+/* HECI struct for creating session key */
+struct wired_cmd_get_session_key_in {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+} __packed;
+
+struct wired_cmd_get_session_key_out {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+ u8 e_dkey_ks[HDCP_2_2_E_DKEY_KS_LEN];
+ u8 r_iv[HDCP_2_2_RIV_LEN];
+} __packed;
+
+/* HECI struct for the Tx enable authentication command */
+struct wired_cmd_enable_auth_in {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+ u8 stream_type;
+} __packed;
+
+struct wired_cmd_enable_auth_out {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+} __packed;
+
+/*
+ * Data structures for integrated wired HDCP2 Tx in support of
+ * the repeater protocols
+ */
+/*
+ * HECI struct for verifying the downstream repeater's HDCP topology in an
+ * integrated wired HDCP Tx session.
+ */
+struct wired_cmd_verify_repeater_in {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+ u8 rx_info[HDCP_2_2_RXINFO_LEN];
+ u8 seq_num_v[HDCP_2_2_SEQ_NUM_LEN];
+ u8 v_prime[HDCP_2_2_V_PRIME_HALF_LEN];
+ u8 receiver_ids[HDCP_2_2_RECEIVER_IDS_MAX_LEN];
+} __packed;
+
+struct wired_cmd_verify_repeater_out {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+ u8 content_type_supported;
+ u8 v[HDCP_2_2_V_PRIME_HALF_LEN];
+} __packed;
+
+/*
+ * HECI struct in support of stream management in an
+ * integrated wired HDCP Tx session.
+ */
+struct wired_cmd_repeater_auth_stream_req_in {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+ u8 seq_num_m[HDCP_2_2_SEQ_NUM_LEN];
+ u8 m_prime[HDCP_2_2_MPRIME_LEN];
+ __be16 k;
+ struct hdcp2_streamid_type streams[1];
+} __packed;
+
+struct wired_cmd_repeater_auth_stream_req_out {
+ struct hdcp_cmd_header header;
+ struct hdcp_port_id port;
+} __packed;
+
+enum mei_fw_ddi {
+ MEI_DDI_INVALID_PORT = 0x0,
+
+ MEI_DDI_B = 1,
+ MEI_DDI_C,
+ MEI_DDI_D,
+ MEI_DDI_E,
+ MEI_DDI_F,
+ MEI_DDI_A = 7,
+ MEI_DDI_RANGE_END = MEI_DDI_A,
+};
+#endif /* __MEI_HDCP_H__ */