From: Bhawanpreet Lakha Date: Wed, 18 Sep 2019 15:18:15 +0000 (-0400) Subject: drm/amd/display: Add execution and transition states for HDCP2.2 X-Git-Tag: v5.15~4600^2~21^2~225 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=51466b3fd2725bfb0de629f71c0854ff276d50ae;p=mirror_ubuntu-kernels.git 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 Reviewed-by: Harry Wentland Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/Makefile b/drivers/gpu/drm/amd/display/modules/hdcp/Makefile index 1c3c6d47973a..904424da01b5 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/Makefile +++ b/drivers/gpu/drm/amd/display/modules/hdcp/Makefile @@ -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 ************) diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c index d7ac445dec6f..a74812977963 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c @@ -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) { diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h index d83f0ab1cadb..9887c5ea6d5f 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h @@ -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_ */ diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c new file mode 100644 index 000000000000..c93c8098d972 --- /dev/null +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c @@ -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; +} diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c new file mode 100644 index 000000000000..94a0e5fa931b --- /dev/null +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_transition.c @@ -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; +} diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h b/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h index dea21702edff..97ecbf5bfec1 100644 --- a/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h +++ b/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h @@ -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,