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drm/amd/display: Add execution and transition states for HDCP2.2 

The module works like a state machine

                                    +-------------+
                            ------> | Execution.c | ------
                            |       +-------------+       |
                            |                             V
    +----+              +--------+                 +--------------+
    | DM |    ----->    | Hdcp.c |  <------------  | Transition.c |
    +----+    <-----    +--------+                 +--------------+

This patch adds the execution and transition files for 2.2

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Bhawanpreet Lakha 2019-09-18 11:18:15 -04:00 committed by Alex Deucher
parent eff682f83c
commit 51466b3fd2
6 changed files with 1764 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/amd/display/modules/hdcp/Makefile
View File

@ -24,7 +24,8 @@
#
HDCP = hdcp_ddc.o hdcp_log.o hdcp_psp.o hdcp.o \
hdcp1_execution.o hdcp1_transition.o
hdcp1_execution.o hdcp1_transition.o \
hdcp2_execution.o hdcp2_transition.o
AMD_DAL_HDCP = $(addprefix $(AMDDALPATH)/modules/hdcp/,$(HDCP))
#$(info ************ DAL-HDCP_MAKEFILE ************)

86
drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c
View File

@ -37,24 +37,52 @@ static void push_error_status(struct mod_hdcp *hdcp,
HDCP_ERROR_TRACE(hdcp, status);
}
hdcp->connection.hdcp1_retry_count++;
if (is_hdcp1(hdcp)) {
hdcp->connection.hdcp1_retry_count++;
} else if (is_hdcp2(hdcp)) {
hdcp->connection.hdcp2_retry_count++;
}
}
static uint8_t is_cp_desired_hdcp1(struct mod_hdcp *hdcp)
{
int i, display_enabled = 0;
int i, is_auth_needed = 0;
/* if all displays on the link are disabled, hdcp is not desired */
/* if all displays on the link don't need authentication,
* hdcp is not desired
*/
for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++) {
if (hdcp->connection.displays[i].state != MOD_HDCP_DISPLAY_INACTIVE &&
!hdcp->connection.displays[i].adjust.disable) {
display_enabled = 1;
is_auth_needed = 1;
break;
}
}
return (hdcp->connection.hdcp1_retry_count < MAX_NUM_OF_ATTEMPTS) &&
display_enabled && !hdcp->connection.link.adjust.hdcp1.disable;
is_auth_needed &&
!hdcp->connection.link.adjust.hdcp1.disable;
}
static uint8_t is_cp_desired_hdcp2(struct mod_hdcp *hdcp)
{
int i, is_auth_needed = 0;
/* if all displays on the link don't need authentication,
* hdcp is not desired
*/
for (i = 0; i < MAX_NUM_OF_DISPLAYS; i++) {
if (hdcp->connection.displays[i].state != MOD_HDCP_DISPLAY_INACTIVE &&
!hdcp->connection.displays[i].adjust.disable) {
is_auth_needed = 1;
break;
}
}
return (hdcp->connection.hdcp2_retry_count < MAX_NUM_OF_ATTEMPTS) &&
is_auth_needed &&
!hdcp->connection.link.adjust.hdcp2.disable &&
!hdcp->connection.is_hdcp2_revoked;
}
static enum mod_hdcp_status execution(struct mod_hdcp *hdcp,
@ -82,6 +110,11 @@ static enum mod_hdcp_status execution(struct mod_hdcp *hdcp,
} else if (is_in_hdcp1_dp_states(hdcp)) {
status = mod_hdcp_hdcp1_dp_execution(hdcp,
event_ctx, &input->hdcp1);
} else if (is_in_hdcp2_states(hdcp)) {
status = mod_hdcp_hdcp2_execution(hdcp, event_ctx, &input->hdcp2);
} else if (is_in_hdcp2_dp_states(hdcp)) {
status = mod_hdcp_hdcp2_dp_execution(hdcp,
event_ctx, &input->hdcp2);
}
out:
return status;
@ -99,7 +132,10 @@ static enum mod_hdcp_status transition(struct mod_hdcp *hdcp,
if (is_in_initialized_state(hdcp)) {
if (is_dp_hdcp(hdcp))
if (is_cp_desired_hdcp1(hdcp)) {
if (is_cp_desired_hdcp2(hdcp)) {
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A0_DETERMINE_RX_HDCP_CAPABLE);
} else if (is_cp_desired_hdcp1(hdcp)) {
callback_in_ms(0, output);
set_state_id(hdcp, output, D1_A0_DETERMINE_RX_HDCP_CAPABLE);
} else {
@ -107,7 +143,10 @@ static enum mod_hdcp_status transition(struct mod_hdcp *hdcp,
set_state_id(hdcp, output, HDCP_CP_NOT_DESIRED);
}
else if (is_hdmi_dvi_sl_hdcp(hdcp))
if (is_cp_desired_hdcp1(hdcp)) {
if (is_cp_desired_hdcp2(hdcp)) {
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A0_KNOWN_HDCP2_CAPABLE_RX);
} else if (is_cp_desired_hdcp1(hdcp)) {
callback_in_ms(0, output);
set_state_id(hdcp, output, H1_A0_WAIT_FOR_ACTIVE_RX);
} else {
@ -126,6 +165,12 @@ static enum mod_hdcp_status transition(struct mod_hdcp *hdcp,
} else if (is_in_hdcp1_dp_states(hdcp)) {
status = mod_hdcp_hdcp1_dp_transition(hdcp,
event_ctx, &input->hdcp1, output);
} else if (is_in_hdcp2_states(hdcp)) {
status = mod_hdcp_hdcp2_transition(hdcp,
event_ctx, &input->hdcp2, output);
} else if (is_in_hdcp2_dp_states(hdcp)) {
status = mod_hdcp_hdcp2_dp_transition(hdcp,
event_ctx, &input->hdcp2, output);
} else {
status = MOD_HDCP_STATUS_INVALID_STATE;
}
@ -139,9 +184,13 @@ static enum mod_hdcp_status reset_authentication(struct mod_hdcp *hdcp,
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (is_hdcp1(hdcp)) {
if (hdcp->auth.trans_input.hdcp1.create_session != UNKNOWN)
if (hdcp->auth.trans_input.hdcp1.create_session != UNKNOWN) {
/* TODO - update psp to unify create session failure
* recovery between hdcp1 and 2.
*/
mod_hdcp_hdcp1_destroy_session(hdcp);
}
if (hdcp->auth.trans_input.hdcp1.add_topology == PASS) {
status = mod_hdcp_remove_display_topology(hdcp);
if (status != MOD_HDCP_STATUS_SUCCESS) {
@ -154,6 +203,27 @@ static enum mod_hdcp_status reset_authentication(struct mod_hdcp *hdcp,
memset(&hdcp->auth, 0, sizeof(struct mod_hdcp_authentication));
memset(&hdcp->state, 0, sizeof(struct mod_hdcp_state));
set_state_id(hdcp, output, HDCP_INITIALIZED);
} else if (is_hdcp2(hdcp)) {
if (hdcp->auth.trans_input.hdcp2.create_session == PASS) {
status = mod_hdcp_hdcp2_destroy_session(hdcp);
if (status != MOD_HDCP_STATUS_SUCCESS) {
output->callback_needed = 0;
output->watchdog_timer_needed = 0;
goto out;
}
}
if (hdcp->auth.trans_input.hdcp2.add_topology == PASS) {
status = mod_hdcp_remove_display_topology(hdcp);
if (status != MOD_HDCP_STATUS_SUCCESS) {
output->callback_needed = 0;
output->watchdog_timer_needed = 0;
goto out;
}
}
HDCP_TOP_RESET_AUTH_TRACE(hdcp);
memset(&hdcp->auth, 0, sizeof(struct mod_hdcp_authentication));
memset(&hdcp->state, 0, sizeof(struct mod_hdcp_state));
set_state_id(hdcp, output, HDCP_INITIALIZED);
} else if (is_in_cp_not_desired_state(hdcp)) {
status = mod_hdcp_remove_display_topology(hdcp);
if (status != MOD_HDCP_STATUS_SUCCESS) {

127
drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h
View File

@ -44,11 +44,13 @@
#define BINFO_MAX_DEVS_EXCEEDED_MASK_DP 0x0080
#define BINFO_MAX_CASCADE_EXCEEDED_MASK_DP 0x0800
#define VERSION_HDCP2_MASK 0x04
#define RXSTATUS_MSG_SIZE_MASK 0x03FF
#define RXSTATUS_READY_MASK 0x0400
#define RXSTATUS_REAUTH_REQUEST_MASK 0x0800
#define RXIDLIST_DEVICE_COUNT_LOWER_MASK 0xf0
#define RXIDLIST_DEVICE_COUNT_UPPER_MASK 0x01
#define RXCAPS_BYTE2_HDCP2_VERSION_DP 0x02
#define RXCAPS_BYTE0_HDCP_CAPABLE_MASK_DP 0x02
#define RXSTATUS_READY_MASK_DP 0x0001
#define RXSTATUS_H_P_AVAILABLE_MASK_DP 0x0002
@ -92,8 +94,52 @@ struct mod_hdcp_transition_input_hdcp1 {
uint8_t stream_encryption_dp;
};
struct mod_hdcp_transition_input_hdcp2 {
uint8_t hdcp2version_read;
uint8_t hdcp2_capable_check;
uint8_t add_topology;
uint8_t create_session;
uint8_t ake_init_prepare;
uint8_t ake_init_write;
uint8_t rxstatus_read;
uint8_t ake_cert_available;
uint8_t ake_cert_read;
uint8_t ake_cert_validation;
uint8_t stored_km_write;
uint8_t no_stored_km_write;
uint8_t h_prime_available;
uint8_t h_prime_read;
uint8_t pairing_available;
uint8_t pairing_info_read;
uint8_t h_prime_validation;
uint8_t lc_init_prepare;
uint8_t lc_init_write;
uint8_t l_prime_available_poll;
uint8_t l_prime_read;
uint8_t l_prime_validation;
uint8_t eks_prepare;
uint8_t eks_write;
uint8_t enable_encryption;
uint8_t reauth_request_check;
uint8_t rx_id_list_read;
uint8_t device_count_check;
uint8_t rx_id_list_validation;
uint8_t repeater_auth_ack_write;
uint8_t prepare_stream_manage;
uint8_t stream_manage_write;
uint8_t stream_ready_available;
uint8_t stream_ready_read;
uint8_t stream_ready_validation;
uint8_t rx_caps_read_dp;
uint8_t content_stream_type_write;
uint8_t link_integrity_check_dp;
uint8_t stream_encryption_dp;
};
union mod_hdcp_transition_input {
struct mod_hdcp_transition_input_hdcp1 hdcp1;
struct mod_hdcp_transition_input_hdcp2 hdcp2;
};
struct mod_hdcp_message_hdcp1 {
@ -150,8 +196,10 @@ struct mod_hdcp_connection {
struct mod_hdcp_display displays[MAX_NUM_OF_DISPLAYS];
uint8_t is_repeater;
uint8_t is_km_stored;
uint8_t is_hdcp2_revoked;
struct mod_hdcp_trace trace;
uint8_t hdcp1_retry_count;
uint8_t hdcp2_retry_count;
};
/* contains values per authentication cycle */
@ -219,6 +267,50 @@ enum mod_hdcp_hdcp1_dp_state_id {
HDCP1_DP_STATE_END = D1_A7_READ_KSV_LIST,
};
enum mod_hdcp_hdcp2_state_id {
HDCP2_STATE_START = HDCP1_DP_STATE_END,
H2_A0_KNOWN_HDCP2_CAPABLE_RX,
H2_A1_SEND_AKE_INIT,
H2_A1_VALIDATE_AKE_CERT,
H2_A1_SEND_NO_STORED_KM,
H2_A1_READ_H_PRIME,
H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME,
H2_A1_SEND_STORED_KM,
H2_A1_VALIDATE_H_PRIME,
H2_A2_LOCALITY_CHECK,
H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER,
H2_ENABLE_ENCRYPTION,
H2_A5_AUTHENTICATED,
H2_A6_WAIT_FOR_RX_ID_LIST,
H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK,
H2_A9_SEND_STREAM_MANAGEMENT,
H2_A9_VALIDATE_STREAM_READY,
HDCP2_STATE_END = H2_A9_VALIDATE_STREAM_READY,
};
enum mod_hdcp_hdcp2_dp_state_id {
HDCP2_DP_STATE_START = HDCP2_STATE_END,
D2_A0_DETERMINE_RX_HDCP_CAPABLE,
D2_A1_SEND_AKE_INIT,
D2_A1_VALIDATE_AKE_CERT,
D2_A1_SEND_NO_STORED_KM,
D2_A1_READ_H_PRIME,
D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME,
D2_A1_SEND_STORED_KM,
D2_A1_VALIDATE_H_PRIME,
D2_A2_LOCALITY_CHECK,
D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER,
D2_SEND_CONTENT_STREAM_TYPE,
D2_ENABLE_ENCRYPTION,
D2_A5_AUTHENTICATED,
D2_A6_WAIT_FOR_RX_ID_LIST,
D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK,
D2_A9_SEND_STREAM_MANAGEMENT,
D2_A9_VALIDATE_STREAM_READY,
HDCP2_DP_STATE_END = D2_A9_VALIDATE_STREAM_READY,
HDCP_STATE_END = HDCP2_DP_STATE_END,
};
/* hdcp1 executions and transitions */
typedef enum mod_hdcp_status (*mod_hdcp_action)(struct mod_hdcp *hdcp);
uint8_t mod_hdcp_execute_and_set(
@ -239,6 +331,22 @@ enum mod_hdcp_status mod_hdcp_hdcp1_dp_transition(struct mod_hdcp *hdcp,
struct mod_hdcp_transition_input_hdcp1 *input,
struct mod_hdcp_output *output);
/* hdcp2 executions and transitions */
enum mod_hdcp_status mod_hdcp_hdcp2_execution(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input);
enum mod_hdcp_status mod_hdcp_hdcp2_dp_execution(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input);
enum mod_hdcp_status mod_hdcp_hdcp2_transition(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input,
struct mod_hdcp_output *output);
enum mod_hdcp_status mod_hdcp_hdcp2_dp_transition(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input,
struct mod_hdcp_output *output);
/* log functions */
void mod_hdcp_dump_binary_message(uint8_t *msg, uint32_t msg_size,
uint8_t *buf, uint32_t buf_size);
@ -289,6 +397,7 @@ enum mod_hdcp_status mod_hdcp_read_binfo(struct mod_hdcp *hdcp);
enum mod_hdcp_status mod_hdcp_write_aksv(struct mod_hdcp *hdcp);
enum mod_hdcp_status mod_hdcp_write_ainfo(struct mod_hdcp *hdcp);
enum mod_hdcp_status mod_hdcp_write_an(struct mod_hdcp *hdcp);
enum mod_hdcp_status mod_hdcp_read_hdcp2version(struct mod_hdcp *hdcp);
enum mod_hdcp_status mod_hdcp_read_rxcaps(struct mod_hdcp *hdcp);
enum mod_hdcp_status mod_hdcp_read_rxstatus(struct mod_hdcp *hdcp);
enum mod_hdcp_status mod_hdcp_read_ake_cert(struct mod_hdcp *hdcp);
@ -352,11 +461,28 @@ static inline uint8_t is_in_hdcp1_dp_states(struct mod_hdcp *hdcp)
current_state(hdcp) <= HDCP1_DP_STATE_END);
}
static inline uint8_t is_in_hdcp2_states(struct mod_hdcp *hdcp)
{
return (current_state(hdcp) > HDCP2_STATE_START &&
current_state(hdcp) <= HDCP2_STATE_END);
}
static inline uint8_t is_in_hdcp2_dp_states(struct mod_hdcp *hdcp)
{
return (current_state(hdcp) > HDCP2_DP_STATE_START &&
current_state(hdcp) <= HDCP2_DP_STATE_END);
}
static inline uint8_t is_hdcp1(struct mod_hdcp *hdcp)
{
return (is_in_hdcp1_states(hdcp) || is_in_hdcp1_dp_states(hdcp));
}
static inline uint8_t is_hdcp2(struct mod_hdcp *hdcp)
{
return (is_in_hdcp2_states(hdcp) || is_in_hdcp2_dp_states(hdcp));
}
static inline uint8_t is_in_cp_not_desired_state(struct mod_hdcp *hdcp)
{
return current_state(hdcp) == HDCP_CP_NOT_DESIRED;
@ -481,6 +607,7 @@ static inline struct mod_hdcp_display *get_empty_display_container(
static inline void reset_retry_counts(struct mod_hdcp *hdcp)
{
hdcp->connection.hdcp1_retry_count = 0;
hdcp->connection.hdcp2_retry_count = 0;
}
#endif /* HDCP_H_ */

881
drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c Normal file
View File

@ -0,0 +1,881 @@
/*
* Copyright 2018 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: AMD
*
*/
#include "hdcp.h"
static inline enum mod_hdcp_status check_receiver_id_list_ready(struct mod_hdcp *hdcp)
{
uint8_t is_ready = 0;
if (is_dp_hdcp(hdcp))
is_ready = (hdcp->auth.msg.hdcp2.rxstatus & RXSTATUS_READY_MASK_DP) ? 1 : 0;
else
is_ready = ((hdcp->auth.msg.hdcp2.rxstatus & RXSTATUS_READY_MASK) &&
(hdcp->auth.msg.hdcp2.rxstatus & RXSTATUS_MSG_SIZE_MASK)) ? 1 : 0;
return is_ready ? MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY;
}
static inline enum mod_hdcp_status check_hdcp2_capable(struct mod_hdcp *hdcp)
{
enum mod_hdcp_status status;
if (is_dp_hdcp(hdcp))
status = ((hdcp->auth.msg.hdcp2.rxcaps_dp[2] &
RXCAPS_BYTE0_HDCP_CAPABLE_MASK_DP) &&
(hdcp->auth.msg.hdcp2.rxcaps_dp[0] ==
RXCAPS_BYTE2_HDCP2_VERSION_DP)) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE;
else
status = (hdcp->auth.msg.hdcp2.hdcp2version_hdmi & VERSION_HDCP2_MASK) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE;
return status;
}
static inline enum mod_hdcp_status check_reauthentication_request(
struct mod_hdcp *hdcp)
{
uint8_t ret = 0;
if (is_dp_hdcp(hdcp))
ret = (hdcp->auth.msg.hdcp2.rxstatus &
RXSTATUS_REAUTH_REQUEST_MASK_DP) ?
MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST :
MOD_HDCP_STATUS_SUCCESS;
else
ret = (hdcp->auth.msg.hdcp2.rxstatus & RXSTATUS_REAUTH_REQUEST_MASK) ?
MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST :
MOD_HDCP_STATUS_SUCCESS;
return ret;
}
static inline enum mod_hdcp_status check_link_integrity_failure_dp(
struct mod_hdcp *hdcp)
{
return (hdcp->auth.msg.hdcp2.rxstatus &
RXSTATUS_LINK_INTEGRITY_FAILURE_MASK_DP) ?
MOD_HDCP_STATUS_HDCP2_REAUTH_LINK_INTEGRITY_FAILURE :
MOD_HDCP_STATUS_SUCCESS;
}
static enum mod_hdcp_status check_ake_cert_available(struct mod_hdcp *hdcp)
{
enum mod_hdcp_status status;
uint16_t size;
if (is_dp_hdcp(hdcp)) {
status = MOD_HDCP_STATUS_SUCCESS;
} else {
status = mod_hdcp_read_rxstatus(hdcp);
if (status == MOD_HDCP_STATUS_SUCCESS) {
size = hdcp->auth.msg.hdcp2.rxstatus & RXSTATUS_MSG_SIZE_MASK;
status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_cert)) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_AKE_CERT_PENDING;
}
}
return status;
}
static enum mod_hdcp_status check_h_prime_available(struct mod_hdcp *hdcp)
{
enum mod_hdcp_status status;
uint8_t size;
status = mod_hdcp_read_rxstatus(hdcp);
if (status != MOD_HDCP_STATUS_SUCCESS)
goto out;
if (is_dp_hdcp(hdcp)) {
status = (hdcp->auth.msg.hdcp2.rxstatus & RXSTATUS_H_P_AVAILABLE_MASK_DP) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING;
} else {
size = hdcp->auth.msg.hdcp2.rxstatus & RXSTATUS_MSG_SIZE_MASK;
status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_h_prime)) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING;
}
out:
return status;
}
static enum mod_hdcp_status check_pairing_info_available(struct mod_hdcp *hdcp)
{
enum mod_hdcp_status status;
uint8_t size;
status = mod_hdcp_read_rxstatus(hdcp);
if (status != MOD_HDCP_STATUS_SUCCESS)
goto out;
if (is_dp_hdcp(hdcp)) {
status = (hdcp->auth.msg.hdcp2.rxstatus & RXSTATUS_PAIRING_AVAILABLE_MASK_DP) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING;
} else {
size = hdcp->auth.msg.hdcp2.rxstatus & RXSTATUS_MSG_SIZE_MASK;
status = (size == sizeof(hdcp->auth.msg.hdcp2.ake_pairing_info)) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING;
}
out:
return status;
}
static enum mod_hdcp_status poll_l_prime_available(struct mod_hdcp *hdcp)
{
enum mod_hdcp_status status;
uint8_t size;
uint16_t max_wait = 20000; // units of us
uint16_t num_polls = 5;
uint16_t wait_time = max_wait / num_polls;
if (is_dp_hdcp(hdcp))
status = MOD_HDCP_STATUS_INVALID_OPERATION;
else
for (; num_polls; num_polls--) {
udelay(wait_time);
status = mod_hdcp_read_rxstatus(hdcp);
if (status != MOD_HDCP_STATUS_SUCCESS)
break;
size = hdcp->auth.msg.hdcp2.rxstatus & RXSTATUS_MSG_SIZE_MASK;
status = (size == sizeof(hdcp->auth.msg.hdcp2.lc_l_prime)) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_L_PRIME_PENDING;
if (status == MOD_HDCP_STATUS_SUCCESS)
break;
}
return status;
}
static enum mod_hdcp_status check_stream_ready_available(struct mod_hdcp *hdcp)
{
enum mod_hdcp_status status;
uint8_t size;
if (is_dp_hdcp(hdcp)) {
status = MOD_HDCP_STATUS_INVALID_OPERATION;
} else {
status = mod_hdcp_read_rxstatus(hdcp);
if (status != MOD_HDCP_STATUS_SUCCESS)
goto out;
size = hdcp->auth.msg.hdcp2.rxstatus & RXSTATUS_MSG_SIZE_MASK;
status = (size == sizeof(hdcp->auth.msg.hdcp2.repeater_auth_stream_ready)) ?
MOD_HDCP_STATUS_SUCCESS :
MOD_HDCP_STATUS_HDCP2_STREAM_READY_PENDING;
}
out:
return status;
}
static inline uint8_t get_device_count(struct mod_hdcp *hdcp)
{
return ((hdcp->auth.msg.hdcp2.rx_id_list[2] & RXIDLIST_DEVICE_COUNT_LOWER_MASK) >> 4) +
((hdcp->auth.msg.hdcp2.rx_id_list[1] & RXIDLIST_DEVICE_COUNT_UPPER_MASK) << 4);
}
static enum mod_hdcp_status check_device_count(struct mod_hdcp *hdcp)
{
/* device count must be greater than or equal to tracked hdcp displays */
return (get_device_count(hdcp) < get_added_display_count(hdcp)) ?
MOD_HDCP_STATUS_HDCP2_DEVICE_COUNT_MISMATCH_FAILURE :
MOD_HDCP_STATUS_SUCCESS;
}
static uint8_t process_rxstatus(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input,
enum mod_hdcp_status *status)
{
if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxstatus,
&input->rxstatus_read, status,
hdcp, "rxstatus_read"))
goto out;
if (!mod_hdcp_execute_and_set(check_reauthentication_request,
&input->reauth_request_check, status,
hdcp, "reauth_request_check"))
goto out;
if (is_dp_hdcp(hdcp)) {
if (!mod_hdcp_execute_and_set(check_link_integrity_failure_dp,
&input->link_integrity_check_dp, status,
hdcp, "link_integrity_check_dp"))
goto out;
}
if (hdcp->connection.is_repeater)
if (check_receiver_id_list_ready(hdcp) ==
MOD_HDCP_STATUS_SUCCESS) {
HDCP_INPUT_PASS_TRACE(hdcp, "rx_id_list_ready");
event_ctx->rx_id_list_ready = 1;
if (is_dp_hdcp(hdcp))
hdcp->auth.msg.hdcp2.rx_id_list_size =
sizeof(hdcp->auth.msg.hdcp2.rx_id_list);
else
hdcp->auth.msg.hdcp2.rx_id_list_size =
hdcp->auth.msg.hdcp2.rxstatus & 0x3FF;
}
out:
return (*status == MOD_HDCP_STATUS_SUCCESS);
}
static enum mod_hdcp_status known_hdcp2_capable_rx(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
event_ctx->unexpected_event = 1;
goto out;
}
if (!mod_hdcp_execute_and_set(mod_hdcp_read_hdcp2version,
&input->hdcp2version_read, &status,
hdcp, "hdcp2version_read"))
goto out;
if (!mod_hdcp_execute_and_set(check_hdcp2_capable,
&input->hdcp2_capable_check, &status,
hdcp, "hdcp2_capable"))
goto out;
out:
return status;
}
static enum mod_hdcp_status send_ake_init(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
event_ctx->unexpected_event = 1;
goto out;
}
if (!mod_hdcp_execute_and_set(mod_hdcp_add_display_topology,
&input->add_topology, &status,
hdcp, "add_topology"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_create_session,
&input->create_session, &status,
hdcp, "create_session"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_ake_init,
&input->ake_init_prepare, &status,
hdcp, "ake_init_prepare"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_write_ake_init,
&input->ake_init_write, &status,
hdcp, "ake_init_write"))
goto out;
out:
return status;
}
static enum mod_hdcp_status validate_ake_cert(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
event_ctx->unexpected_event = 1;
goto out;
}
if (is_hdmi_dvi_sl_hdcp(hdcp))
if (!mod_hdcp_execute_and_set(check_ake_cert_available,
&input->ake_cert_available, &status,
hdcp, "ake_cert_available"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_read_ake_cert,
&input->ake_cert_read, &status,
hdcp, "ake_cert_read"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_ake_cert,
&input->ake_cert_validation, &status,
hdcp, "ake_cert_validation"))
goto out;
out:
return status;
}
static enum mod_hdcp_status send_no_stored_km(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
event_ctx->unexpected_event = 1;
goto out;
}
if (!mod_hdcp_execute_and_set(mod_hdcp_write_no_stored_km,
&input->no_stored_km_write, &status,
hdcp, "no_stored_km_write"))
goto out;
out:
return status;
}
static enum mod_hdcp_status read_h_prime(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
event_ctx->unexpected_event = 1;
goto out;
}
if (!mod_hdcp_execute_and_set(check_h_prime_available,
&input->h_prime_available, &status,
hdcp, "h_prime_available"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime,
&input->h_prime_read, &status,
hdcp, "h_prime_read"))
goto out;
out:
return status;
}
static enum mod_hdcp_status read_pairing_info_and_validate_h_prime(
struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
event_ctx->unexpected_event = 1;
goto out;
}
if (!mod_hdcp_execute_and_set(check_pairing_info_available,
&input->pairing_available, &status,
hdcp, "pairing_available"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_read_pairing_info,
&input->pairing_info_read, &status,
hdcp, "pairing_info_read"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime,
&input->h_prime_validation, &status,
hdcp, "h_prime_validation"))
goto out;
out:
return status;
}
static enum mod_hdcp_status send_stored_km(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
event_ctx->unexpected_event = 1;
goto out;
}
if (!mod_hdcp_execute_and_set(mod_hdcp_write_stored_km,
&input->stored_km_write, &status,
hdcp, "stored_km_write"))
goto out;
out:
return status;
}
static enum mod_hdcp_status validate_h_prime(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
event_ctx->unexpected_event = 1;
goto out;
}
if (!mod_hdcp_execute_and_set(check_h_prime_available,
&input->h_prime_available, &status,
hdcp, "h_prime_available"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_read_h_prime,
&input->h_prime_read, &status,
hdcp, "h_prime_read"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_h_prime,
&input->h_prime_validation, &status,
hdcp, "h_prime_validation"))
goto out;
out:
return status;
}
static enum mod_hdcp_status locality_check(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
event_ctx->unexpected_event = 1;
goto out;
}
if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_lc_init,
&input->lc_init_prepare, &status,
hdcp, "lc_init_prepare"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_write_lc_init,
&input->lc_init_write, &status,
hdcp, "lc_init_write"))
goto out;
if (is_dp_hdcp(hdcp))
udelay(16000);
else
if (!mod_hdcp_execute_and_set(poll_l_prime_available,
&input->l_prime_available_poll, &status,
hdcp, "l_prime_available_poll"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_read_l_prime,
&input->l_prime_read, &status,
hdcp, "l_prime_read"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_l_prime,
&input->l_prime_validation, &status,
hdcp, "l_prime_validation"))
goto out;
out:
return status;
}
static enum mod_hdcp_status exchange_ks_and_test_for_repeater(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
event_ctx->unexpected_event = 1;
goto out;
}
if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_eks,
&input->eks_prepare, &status,
hdcp, "eks_prepare"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_write_eks,
&input->eks_write, &status,
hdcp, "eks_write"))
goto out;
out:
return status;
}
static enum mod_hdcp_status enable_encryption(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
event_ctx->unexpected_event = 1;
goto out;
}
if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
process_rxstatus(hdcp, event_ctx, input, &status);
goto out;
}
if (is_hdmi_dvi_sl_hdcp(hdcp)) {
if (!process_rxstatus(hdcp, event_ctx, input, &status))
goto out;
if (event_ctx->rx_id_list_ready)
goto out;
}
if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_enable_encryption,
&input->enable_encryption, &status,
hdcp, "enable_encryption"))
goto out;
if (is_dp_mst_hdcp(hdcp)) {
if (!mod_hdcp_execute_and_set(
mod_hdcp_hdcp2_enable_dp_stream_encryption,
&input->stream_encryption_dp, &status,
hdcp, "stream_encryption_dp"))
goto out;
}
out:
return status;
}
static enum mod_hdcp_status authenticated(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
event_ctx->unexpected_event = 1;
goto out;
}
if (!process_rxstatus(hdcp, event_ctx, input, &status))
goto out;
if (event_ctx->rx_id_list_ready)
goto out;
out:
return status;
}
static enum mod_hdcp_status wait_for_rx_id_list(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
event_ctx->unexpected_event = 1;
goto out;
}
if (!process_rxstatus(hdcp, event_ctx, input, &status))
goto out;
if (!event_ctx->rx_id_list_ready) {
status = MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY;
goto out;
}
out:
return status;
}
static enum mod_hdcp_status verify_rx_id_list_and_send_ack(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
event_ctx->unexpected_event = 1;
goto out;
}
if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
process_rxstatus(hdcp, event_ctx, input, &status);
goto out;
}
if (!mod_hdcp_execute_and_set(mod_hdcp_read_rx_id_list,
&input->rx_id_list_read,
&status, hdcp, "receiver_id_list_read"))
goto out;
if (!mod_hdcp_execute_and_set(check_device_count,
&input->device_count_check,
&status, hdcp, "device_count_check"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_rx_id_list,
&input->rx_id_list_validation,
&status, hdcp, "rx_id_list_validation"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_write_repeater_auth_ack,
&input->repeater_auth_ack_write,
&status, hdcp, "repeater_auth_ack_write"))
goto out;
out:
return status;
}
static enum mod_hdcp_status send_stream_management(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
event_ctx->unexpected_event = 1;
goto out;
}
if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
process_rxstatus(hdcp, event_ctx, input, &status);
goto out;
}
if (is_hdmi_dvi_sl_hdcp(hdcp)) {
if (!process_rxstatus(hdcp, event_ctx, input, &status))
goto out;
if (event_ctx->rx_id_list_ready)
goto out;
}
if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_prepare_stream_management,
&input->prepare_stream_manage,
&status, hdcp, "prepare_stream_manage"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_write_stream_manage,
&input->stream_manage_write,
&status, hdcp, "stream_manage_write"))
goto out;
out:
return status;
}
static enum mod_hdcp_status validate_stream_ready(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
event_ctx->event != MOD_HDCP_EVENT_CPIRQ &&
event_ctx->event != MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
event_ctx->unexpected_event = 1;
goto out;
}
if (event_ctx->event == MOD_HDCP_EVENT_CPIRQ) {
process_rxstatus(hdcp, event_ctx, input, &status);
goto out;
}
if (is_hdmi_dvi_sl_hdcp(hdcp)) {
if (!process_rxstatus(hdcp, event_ctx, input, &status))
goto out;
if (event_ctx->rx_id_list_ready) {
goto out;
}
}
if (is_hdmi_dvi_sl_hdcp(hdcp))
if (!mod_hdcp_execute_and_set(check_stream_ready_available,
&input->stream_ready_available,
&status, hdcp, "stream_ready_available"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_read_stream_ready,
&input->stream_ready_read,
&status, hdcp, "stream_ready_read"))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_hdcp2_validate_stream_ready,
&input->stream_ready_validation,
&status, hdcp, "stream_ready_validation"))
goto out;
out:
return status;
}
static enum mod_hdcp_status determine_rx_hdcp_capable_dp(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) {
event_ctx->unexpected_event = 1;
goto out;
}
if (!mod_hdcp_execute_and_set(mod_hdcp_read_rxcaps,
&input->rx_caps_read_dp,
&status, hdcp, "rx_caps_read_dp"))
goto out;
if (!mod_hdcp_execute_and_set(check_hdcp2_capable,
&input->hdcp2_capable_check, &status,
hdcp, "hdcp2_capable_check"))
goto out;
out:
return status;
}
static enum mod_hdcp_status send_content_stream_type_dp(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK &&
event_ctx->event != MOD_HDCP_EVENT_CPIRQ) {
event_ctx->unexpected_event = 1;
goto out;
}
if (!process_rxstatus(hdcp, event_ctx, input, &status))
goto out;
if (!mod_hdcp_execute_and_set(mod_hdcp_write_content_type,
&input->content_stream_type_write, &status,
hdcp, "content_stream_type_write"))
goto out;
out:
return status;
}
enum mod_hdcp_status mod_hdcp_hdcp2_execution(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
switch (current_state(hdcp)) {
case H2_A0_KNOWN_HDCP2_CAPABLE_RX:
status = known_hdcp2_capable_rx(hdcp, event_ctx, input);
break;
case H2_A1_SEND_AKE_INIT:
status = send_ake_init(hdcp, event_ctx, input);
break;
case H2_A1_VALIDATE_AKE_CERT:
status = validate_ake_cert(hdcp, event_ctx, input);
break;
case H2_A1_SEND_NO_STORED_KM:
status = send_no_stored_km(hdcp, event_ctx, input);
break;
case H2_A1_READ_H_PRIME:
status = read_h_prime(hdcp, event_ctx, input);
break;
case H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
status = read_pairing_info_and_validate_h_prime(hdcp,
event_ctx, input);
break;
case H2_A1_SEND_STORED_KM:
status = send_stored_km(hdcp, event_ctx, input);
break;
case H2_A1_VALIDATE_H_PRIME:
status = validate_h_prime(hdcp, event_ctx, input);
break;
case H2_A2_LOCALITY_CHECK:
status = locality_check(hdcp, event_ctx, input);
break;
case H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
status = exchange_ks_and_test_for_repeater(hdcp, event_ctx, input);
break;
case H2_ENABLE_ENCRYPTION:
status = enable_encryption(hdcp, event_ctx, input);
break;
case H2_A5_AUTHENTICATED:
status = authenticated(hdcp, event_ctx, input);
break;
case H2_A6_WAIT_FOR_RX_ID_LIST:
status = wait_for_rx_id_list(hdcp, event_ctx, input);
break;
case H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input);
break;
case H2_A9_SEND_STREAM_MANAGEMENT:
status = send_stream_management(hdcp, event_ctx, input);
break;
case H2_A9_VALIDATE_STREAM_READY:
status = validate_stream_ready(hdcp, event_ctx, input);
break;
default:
status = MOD_HDCP_STATUS_INVALID_STATE;
break;
}
return status;
}
enum mod_hdcp_status mod_hdcp_hdcp2_dp_execution(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
switch (current_state(hdcp)) {
case D2_A0_DETERMINE_RX_HDCP_CAPABLE:
status = determine_rx_hdcp_capable_dp(hdcp, event_ctx, input);
break;
case D2_A1_SEND_AKE_INIT:
status = send_ake_init(hdcp, event_ctx, input);
break;
case D2_A1_VALIDATE_AKE_CERT:
status = validate_ake_cert(hdcp, event_ctx, input);
break;
case D2_A1_SEND_NO_STORED_KM:
status = send_no_stored_km(hdcp, event_ctx, input);
break;
case D2_A1_READ_H_PRIME:
status = read_h_prime(hdcp, event_ctx, input);
break;
case D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
status = read_pairing_info_and_validate_h_prime(hdcp,
event_ctx, input);
break;
case D2_A1_SEND_STORED_KM:
status = send_stored_km(hdcp, event_ctx, input);
break;
case D2_A1_VALIDATE_H_PRIME:
status = validate_h_prime(hdcp, event_ctx, input);
break;
case D2_A2_LOCALITY_CHECK:
status = locality_check(hdcp, event_ctx, input);
break;
case D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
status = exchange_ks_and_test_for_repeater(hdcp,
event_ctx, input);
break;
case D2_SEND_CONTENT_STREAM_TYPE:
status = send_content_stream_type_dp(hdcp, event_ctx, input);
break;
case D2_ENABLE_ENCRYPTION:
status = enable_encryption(hdcp, event_ctx, input);
break;
case D2_A5_AUTHENTICATED:
status = authenticated(hdcp, event_ctx, input);
break;
case D2_A6_WAIT_FOR_RX_ID_LIST:
status = wait_for_rx_id_list(hdcp, event_ctx, input);
break;
case D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
status = verify_rx_id_list_and_send_ack(hdcp, event_ctx, input);
break;
case D2_A9_SEND_STREAM_MANAGEMENT:
status = send_stream_management(hdcp, event_ctx, input);
break;
case D2_A9_VALIDATE_STREAM_READY:
status = validate_stream_ready(hdcp, event_ctx, input);
break;
default:
status = MOD_HDCP_STATUS_INVALID_STATE;
break;
}
return status;
}

674
drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c Normal file
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@ -0,0 +1,674 @@
/*
* Copyright 2018 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: AMD
*
*/
#include "hdcp.h"
enum mod_hdcp_status mod_hdcp_hdcp2_transition(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input,
struct mod_hdcp_output *output)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
struct mod_hdcp_connection *conn = &hdcp->connection;
struct mod_hdcp_link_adjustment *adjust = &hdcp->connection.link.adjust;
switch (current_state(hdcp)) {
case H2_A0_KNOWN_HDCP2_CAPABLE_RX:
if (input->hdcp2version_read != PASS ||
input->hdcp2_capable_check != PASS) {
adjust->hdcp2.disable = 1;
callback_in_ms(0, output);
set_state_id(hdcp, output, HDCP_INITIALIZED);
} else {
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A1_SEND_AKE_INIT);
}
break;
case H2_A1_SEND_AKE_INIT:
if (input->add_topology != PASS ||
input->create_session != PASS ||
input->ake_init_prepare != PASS) {
/* out of sync with psp state */
adjust->hdcp2.disable = 1;
fail_and_restart_in_ms(0, &status, output);
break;
} else if (input->ake_init_write != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
}
set_watchdog_in_ms(hdcp, 100, output);
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A1_VALIDATE_AKE_CERT);
break;
case H2_A1_VALIDATE_AKE_CERT:
if (input->ake_cert_available != PASS) {
if (event_ctx->event ==
MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
/* 1A-08: consider ake timeout a failure */
/* some hdmi receivers are not ready for HDCP
* immediately after video becomes active,
* delay 1s before retry on first HDCP message
* timeout.
*/
fail_and_restart_in_ms(1000, &status, output);
} else {
/* continue ake cert polling*/
callback_in_ms(10, output);
increment_stay_counter(hdcp);
}
break;
} else if (input->ake_cert_read != PASS ||
input->ake_cert_validation != PASS) {
/*
* 1A-09: consider invalid ake cert a failure
* 1A-10: consider receiver id listed in SRM a failure
*/
fail_and_restart_in_ms(0, &status, output);
break;
}
if (conn->is_km_stored &&
!adjust->hdcp2.force_no_stored_km) {
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A1_SEND_STORED_KM);
} else {
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A1_SEND_NO_STORED_KM);
}
break;
case H2_A1_SEND_NO_STORED_KM:
if (input->no_stored_km_write != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
}
if (adjust->hdcp2.increase_h_prime_timeout)
set_watchdog_in_ms(hdcp, 2000, output);
else
set_watchdog_in_ms(hdcp, 1000, output);
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A1_READ_H_PRIME);
break;
case H2_A1_READ_H_PRIME:
if (input->h_prime_available != PASS) {
if (event_ctx->event ==
MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
/* 1A-11-3: consider h' timeout a failure */
fail_and_restart_in_ms(0, &status, output);
} else {
/* continue h' polling */
callback_in_ms(100, output);
increment_stay_counter(hdcp);
}
break;
} else if (input->h_prime_read != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
}
set_watchdog_in_ms(hdcp, 200, output);
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME);
break;
case H2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
if (input->pairing_available != PASS) {
if (event_ctx->event ==
MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
/* 1A-12: consider pairing info timeout
* a failure
*/
fail_and_restart_in_ms(0, &status, output);
} else {
/* continue pairing info polling */
callback_in_ms(20, output);
increment_stay_counter(hdcp);
}
break;
} else if (input->pairing_info_read != PASS ||
input->h_prime_validation != PASS) {
/* 1A-11-1: consider invalid h' a failure */
fail_and_restart_in_ms(0, &status, output);
break;
}
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A2_LOCALITY_CHECK);
break;
case H2_A1_SEND_STORED_KM:
if (input->stored_km_write != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
}
set_watchdog_in_ms(hdcp, 200, output);
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A1_VALIDATE_H_PRIME);
break;
case H2_A1_VALIDATE_H_PRIME:
if (input->h_prime_available != PASS) {
if (event_ctx->event ==
MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
/* 1A-11-2: consider h' timeout a failure */
fail_and_restart_in_ms(0, &status, output);
} else {
/* continue h' polling */
callback_in_ms(20, output);
increment_stay_counter(hdcp);
}
break;
} else if (input->h_prime_read != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
} else if (input->h_prime_validation != PASS) {
/* 1A-11-1: consider invalid h' a failure */
adjust->hdcp2.force_no_stored_km = 1;
fail_and_restart_in_ms(0, &status, output);
break;
}
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A2_LOCALITY_CHECK);
break;
case H2_A2_LOCALITY_CHECK:
if (hdcp->state.stay_count > 10 ||
input->lc_init_prepare != PASS ||
input->lc_init_write != PASS ||
input->l_prime_available_poll != PASS ||
input->l_prime_read != PASS) {
/*
* 1A-05: consider disconnection after LC init a failure
* 1A-13-1: consider invalid l' a failure
* 1A-13-2: consider l' timeout a failure
*/
fail_and_restart_in_ms(0, &status, output);
break;
} else if (input->l_prime_validation != PASS) {
callback_in_ms(0, output);
increment_stay_counter(hdcp);
break;
}
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER);
break;
case H2_A3_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
if (input->eks_prepare != PASS ||
input->eks_write != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
}
if (conn->is_repeater) {
set_watchdog_in_ms(hdcp, 3000, output);
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A6_WAIT_FOR_RX_ID_LIST);
} else {
/* some CTS equipment requires a delay GREATER than
* 200 ms, so delay 210 ms instead of 200 ms
*/
callback_in_ms(210, output);
set_state_id(hdcp, output, H2_ENABLE_ENCRYPTION);
}
break;
case H2_ENABLE_ENCRYPTION:
if (input->rxstatus_read != PASS ||
input->reauth_request_check != PASS) {
/*
* 1A-07: restart hdcp on REAUTH_REQ
* 1B-08: restart hdcp on REAUTH_REQ
*/
fail_and_restart_in_ms(0, &status, output);
break;
} else if (event_ctx->rx_id_list_ready && conn->is_repeater) {
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK);
break;
} else if (input->enable_encryption != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
}
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A5_AUTHENTICATED);
HDCP_FULL_DDC_TRACE(hdcp);
break;
case H2_A5_AUTHENTICATED:
if (input->rxstatus_read != PASS ||
input->reauth_request_check != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
} else if (event_ctx->rx_id_list_ready && conn->is_repeater) {
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK);
break;
}
callback_in_ms(500, output);
increment_stay_counter(hdcp);
break;
case H2_A6_WAIT_FOR_RX_ID_LIST:
if (input->rxstatus_read != PASS ||
input->reauth_request_check != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
} else if (!event_ctx->rx_id_list_ready) {
if (event_ctx->event == MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
/* 1B-02: consider rx id list timeout a failure */
/* some CTS equipment's actual timeout
* measurement is slightly greater than 3000 ms.
* Delay 100 ms to ensure it is fully timeout
* before re-authentication.
*/
fail_and_restart_in_ms(100, &status, output);
} else {
callback_in_ms(300, output);
increment_stay_counter(hdcp);
}
break;
}
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK);
break;
case H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
if (input->rxstatus_read != PASS ||
input->reauth_request_check != PASS ||
input->rx_id_list_read != PASS ||
input->device_count_check != PASS ||
input->rx_id_list_validation != PASS ||
input->repeater_auth_ack_write != PASS) {
/* 1B-03: consider invalid v' a failure
* 1B-04: consider MAX_DEVS_EXCEEDED a failure
* 1B-05: consider MAX_CASCADE_EXCEEDED a failure
* 1B-06: consider invalid seq_num_V a failure
* 1B-09: consider seq_num_V rollover a failure
*/
fail_and_restart_in_ms(0, &status, output);
break;
}
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A9_SEND_STREAM_MANAGEMENT);
break;
case H2_A9_SEND_STREAM_MANAGEMENT:
if (input->rxstatus_read != PASS ||
input->reauth_request_check != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
} else if (event_ctx->rx_id_list_ready && conn->is_repeater) {
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK);
break;
} else if (input->prepare_stream_manage != PASS ||
input->stream_manage_write != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
}
set_watchdog_in_ms(hdcp, 100, output);
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A9_VALIDATE_STREAM_READY);
break;
case H2_A9_VALIDATE_STREAM_READY:
if (input->rxstatus_read != PASS ||
input->reauth_request_check != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
} else if (event_ctx->rx_id_list_ready && conn->is_repeater) {
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK);
break;
} else if (input->stream_ready_available != PASS) {
if (event_ctx->event == MOD_HDCP_EVENT_WATCHDOG_TIMEOUT) {
/* 1B-10-2: restart content stream management on
* stream ready timeout
*/
hdcp->auth.count.stream_management_retry_count++;
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A9_SEND_STREAM_MANAGEMENT);
} else {
callback_in_ms(10, output);
increment_stay_counter(hdcp);
}
break;
} else if (input->stream_ready_read != PASS ||
input->stream_ready_validation != PASS) {
/*
* 1B-10-1: restart content stream management
* on invalid M'
*/
if (hdcp->auth.count.stream_management_retry_count > 10) {
fail_and_restart_in_ms(0, &status, output);
} else {
hdcp->auth.count.stream_management_retry_count++;
callback_in_ms(0, output);
set_state_id(hdcp, output, H2_A9_SEND_STREAM_MANAGEMENT);
}
break;
}
callback_in_ms(200, output);
set_state_id(hdcp, output, H2_ENABLE_ENCRYPTION);
break;
default:
status = MOD_HDCP_STATUS_INVALID_STATE;
fail_and_restart_in_ms(0, &status, output);
break;
}
return status;
}
enum mod_hdcp_status mod_hdcp_hdcp2_dp_transition(struct mod_hdcp *hdcp,
struct mod_hdcp_event_context *event_ctx,
struct mod_hdcp_transition_input_hdcp2 *input,
struct mod_hdcp_output *output)
{
enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
struct mod_hdcp_connection *conn = &hdcp->connection;
struct mod_hdcp_link_adjustment *adjust = &hdcp->connection.link.adjust;
switch (current_state(hdcp)) {
case D2_A0_DETERMINE_RX_HDCP_CAPABLE:
if (input->rx_caps_read_dp != PASS ||
input->hdcp2_capable_check != PASS) {
adjust->hdcp2.disable = 1;
callback_in_ms(0, output);
set_state_id(hdcp, output, HDCP_INITIALIZED);
} else {
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A1_SEND_AKE_INIT);
}
break;
case D2_A1_SEND_AKE_INIT:
if (input->add_topology != PASS ||
input->create_session != PASS ||
input->ake_init_prepare != PASS) {
/* out of sync with psp state */
adjust->hdcp2.disable = 1;
fail_and_restart_in_ms(0, &status, output);
break;
} else if (input->ake_init_write != PASS) {
/* possibly display not ready */
fail_and_restart_in_ms(0, &status, output);
break;
}
callback_in_ms(100, output);
set_state_id(hdcp, output, D2_A1_VALIDATE_AKE_CERT);
break;
case D2_A1_VALIDATE_AKE_CERT:
if (input->ake_cert_read != PASS ||
input->ake_cert_validation != PASS) {
/*
* 1A-08: consider invalid ake cert a failure
* 1A-09: consider receiver id listed in SRM a failure
*/
fail_and_restart_in_ms(0, &status, output);
break;
}
if (conn->is_km_stored &&
!adjust->hdcp2.force_no_stored_km) {
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A1_SEND_STORED_KM);
} else {
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A1_SEND_NO_STORED_KM);
}
break;
case D2_A1_SEND_NO_STORED_KM:
if (input->no_stored_km_write != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
}
if (adjust->hdcp2.increase_h_prime_timeout)
set_watchdog_in_ms(hdcp, 2000, output);
else
set_watchdog_in_ms(hdcp, 1000, output);
set_state_id(hdcp, output, D2_A1_READ_H_PRIME);
break;
case D2_A1_READ_H_PRIME:
if (input->h_prime_available != PASS) {
if (event_ctx->event ==
MOD_HDCP_EVENT_WATCHDOG_TIMEOUT)
/* 1A-10-3: consider h' timeout a failure */
fail_and_restart_in_ms(0, &status, output);
else
increment_stay_counter(hdcp);
break;
} else if (input->h_prime_read != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
}
set_watchdog_in_ms(hdcp, 200, output);
set_state_id(hdcp, output, D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME);
break;
case D2_A1_READ_PAIRING_INFO_AND_VALIDATE_H_PRIME:
if (input->pairing_available != PASS) {
if (event_ctx->event ==
MOD_HDCP_EVENT_WATCHDOG_TIMEOUT)
/*
* 1A-11: consider pairing info timeout
* a failure
*/
fail_and_restart_in_ms(0, &status, output);
else
increment_stay_counter(hdcp);
break;
} else if (input->pairing_info_read != PASS ||
input->h_prime_validation != PASS) {
/* 1A-10-1: consider invalid h' a failure */
fail_and_restart_in_ms(0, &status, output);
break;
}
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A2_LOCALITY_CHECK);
break;
case D2_A1_SEND_STORED_KM:
if (input->stored_km_write != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
}
set_watchdog_in_ms(hdcp, 200, output);
set_state_id(hdcp, output, D2_A1_VALIDATE_H_PRIME);
break;
case D2_A1_VALIDATE_H_PRIME:
if (input->h_prime_available != PASS) {
if (event_ctx->event ==
MOD_HDCP_EVENT_WATCHDOG_TIMEOUT)
/* 1A-10-2: consider h' timeout a failure */
fail_and_restart_in_ms(0, &status, output);
else
increment_stay_counter(hdcp);
break;
} else if (input->h_prime_read != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
} else if (input->h_prime_validation != PASS) {
/* 1A-10-1: consider invalid h' a failure */
adjust->hdcp2.force_no_stored_km = 1;
fail_and_restart_in_ms(0, &status, output);
break;
}
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A2_LOCALITY_CHECK);
break;
case D2_A2_LOCALITY_CHECK:
if (hdcp->state.stay_count > 10 ||
input->lc_init_prepare != PASS ||
input->lc_init_write != PASS ||
input->l_prime_read != PASS) {
/* 1A-12: consider invalid l' a failure */
fail_and_restart_in_ms(0, &status, output);
break;
} else if (input->l_prime_validation != PASS) {
callback_in_ms(0, output);
increment_stay_counter(hdcp);
break;
}
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER);
break;
case D2_A34_EXCHANGE_KS_AND_TEST_FOR_REPEATER:
if (input->eks_prepare != PASS ||
input->eks_write != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
}
if (conn->is_repeater) {
set_watchdog_in_ms(hdcp, 3000, output);
set_state_id(hdcp, output, D2_A6_WAIT_FOR_RX_ID_LIST);
} else {
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_SEND_CONTENT_STREAM_TYPE);
}
break;
case D2_SEND_CONTENT_STREAM_TYPE:
if (input->rxstatus_read != PASS ||
input->reauth_request_check != PASS ||
input->link_integrity_check_dp != PASS ||
input->content_stream_type_write != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
}
callback_in_ms(210, output);
set_state_id(hdcp, output, D2_ENABLE_ENCRYPTION);
break;
case D2_ENABLE_ENCRYPTION:
if (input->rxstatus_read != PASS ||
input->reauth_request_check != PASS ||
input->link_integrity_check_dp != PASS) {
/*
* 1A-07: restart hdcp on REAUTH_REQ
* 1B-08: restart hdcp on REAUTH_REQ
*/
fail_and_restart_in_ms(0, &status, output);
break;
} else if (event_ctx->rx_id_list_ready && conn->is_repeater) {
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK);
break;
} else if (input->enable_encryption != PASS ||
(is_dp_mst_hdcp(hdcp) && input->stream_encryption_dp != PASS)) {
fail_and_restart_in_ms(0, &status, output);
break;
}
set_state_id(hdcp, output, D2_A5_AUTHENTICATED);
HDCP_FULL_DDC_TRACE(hdcp);
break;
case D2_A5_AUTHENTICATED:
if (input->rxstatus_read != PASS ||
input->reauth_request_check != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
} else if (input->link_integrity_check_dp != PASS) {
if (hdcp->connection.hdcp2_retry_count >= 1)
adjust->hdcp2.disable_type1 = 1;
fail_and_restart_in_ms(0, &status, output);
break;
} else if (event_ctx->rx_id_list_ready && conn->is_repeater) {
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK);
break;
}
increment_stay_counter(hdcp);
break;
case D2_A6_WAIT_FOR_RX_ID_LIST:
if (input->rxstatus_read != PASS ||
input->reauth_request_check != PASS ||
input->link_integrity_check_dp != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
} else if (!event_ctx->rx_id_list_ready) {
if (event_ctx->event == MOD_HDCP_EVENT_WATCHDOG_TIMEOUT)
/* 1B-02: consider rx id list timeout a failure */
fail_and_restart_in_ms(0, &status, output);
else
increment_stay_counter(hdcp);
break;
}
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK);
break;
case D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK:
if (input->rxstatus_read != PASS ||
input->reauth_request_check != PASS ||
input->link_integrity_check_dp != PASS ||
input->rx_id_list_read != PASS ||
input->device_count_check != PASS ||
input->rx_id_list_validation != PASS ||
input->repeater_auth_ack_write != PASS) {
/*
* 1B-03: consider invalid v' a failure
* 1B-04: consider MAX_DEVS_EXCEEDED a failure
* 1B-05: consider MAX_CASCADE_EXCEEDED a failure
* 1B-06: consider invalid seq_num_V a failure
* 1B-09: consider seq_num_V rollover a failure
*/
fail_and_restart_in_ms(0, &status, output);
break;
}
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A9_SEND_STREAM_MANAGEMENT);
break;
case D2_A9_SEND_STREAM_MANAGEMENT:
if (input->rxstatus_read != PASS ||
input->reauth_request_check != PASS ||
input->link_integrity_check_dp != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
} else if (event_ctx->rx_id_list_ready) {
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK);
break;
} else if (input->prepare_stream_manage != PASS ||
input->stream_manage_write != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
}
callback_in_ms(100, output);
set_state_id(hdcp, output, D2_A9_VALIDATE_STREAM_READY);
break;
case D2_A9_VALIDATE_STREAM_READY:
if (input->rxstatus_read != PASS ||
input->reauth_request_check != PASS ||
input->link_integrity_check_dp != PASS) {
fail_and_restart_in_ms(0, &status, output);
break;
} else if (event_ctx->rx_id_list_ready) {
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A78_VERIFY_RX_ID_LIST_AND_SEND_ACK);
break;
} else if (input->stream_ready_read != PASS ||
input->stream_ready_validation != PASS) {
/*
* 1B-10-1: restart content stream management
* on invalid M'
* 1B-10-2: consider stream ready timeout a failure
*/
if (hdcp->auth.count.stream_management_retry_count > 10) {
fail_and_restart_in_ms(0, &status, output);
} else {
hdcp->auth.count.stream_management_retry_count++;
callback_in_ms(0, output);
set_state_id(hdcp, output, D2_A9_SEND_STREAM_MANAGEMENT);
}
break;
}
callback_in_ms(200, output);
set_state_id(hdcp, output, D2_ENABLE_ENCRYPTION);
break;
default:
status = MOD_HDCP_STATUS_INVALID_STATE;
fail_and_restart_in_ms(0, &status, output);
break;
}
return status;
}

2
drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h
View File

@ -77,6 +77,7 @@ enum mod_hdcp_status {
MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING,
MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING,
MOD_HDCP_STATUS_HDCP2_VALIDATE_AKE_CERT_FAILURE,
MOD_HDCP_STATUS_HDCP2_AKE_CERT_REVOKED,
MOD_HDCP_STATUS_HDCP2_VALIDATE_H_PRIME_FAILURE,
MOD_HDCP_STATUS_HDCP2_VALIDATE_PAIRING_INFO_FAILURE,
MOD_HDCP_STATUS_HDCP2_PREP_LC_INIT_FAILURE,
@ -86,6 +87,7 @@ enum mod_hdcp_status {
MOD_HDCP_STATUS_HDCP2_ENABLE_ENCRYPTION_FAILURE,
MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY,
MOD_HDCP_STATUS_HDCP2_VALIDATE_RX_ID_LIST_FAILURE,
MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_REVOKED,
MOD_HDCP_STATUS_HDCP2_ENABLE_STREAM_ENCRYPTION,
MOD_HDCP_STATUS_HDCP2_STREAM_READY_PENDING,
MOD_HDCP_STATUS_HDCP2_VALIDATE_STREAM_READY_FAILURE,