diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display')
| -rw-r--r-- | drivers/gpu/drm/amd/display/Makefile | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/Makefile | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/hdcp/Makefile | 28 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c | 326 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/include/hdcp_types.h | 96 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/hdcp/Makefile | 32 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c | 426 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/hdcp/hdcp.h | 442 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c | 531 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_transition.c | 307 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c | 305 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/hdcp/hdcp_log.c | 163 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/hdcp/hdcp_log.h | 139 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h | 289 |
14 files changed, 3095 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/Makefile b/drivers/gpu/drm/amd/display/Makefile index 496cee000f10..36b3d6a5d04d 100644 --- a/drivers/gpu/drm/amd/display/Makefile +++ b/drivers/gpu/drm/amd/display/Makefile @@ -34,12 +34,19 @@ subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/modules/freesync subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/modules/color subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/modules/info_packet subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/modules/power +ifdef CONFIG_DRM_AMD_DC_HDCP +subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/modules/hdcp +endif #TODO: remove when Timing Sync feature is complete subdir-ccflags-y += -DBUILD_FEATURE_TIMING_SYNC=0 DAL_LIBS = amdgpu_dm dc modules/freesync modules/color modules/info_packet modules/power +ifdef CONFIG_DRM_AMD_DC_HDCP +DAL_LIBS += modules/hdcp +endif + AMD_DAL = $(addsuffix /Makefile, $(addprefix $(FULL_AMD_DISPLAY_PATH)/,$(DAL_LIBS))) include $(AMD_DAL) diff --git a/drivers/gpu/drm/amd/display/dc/Makefile b/drivers/gpu/drm/amd/display/dc/Makefile index 627982cb15d2..a160512a2f04 100644 --- a/drivers/gpu/drm/amd/display/dc/Makefile +++ b/drivers/gpu/drm/amd/display/dc/Makefile @@ -48,6 +48,10 @@ DC_LIBS += dce110 DC_LIBS += dce100 DC_LIBS += dce80 +ifdef CONFIG_DRM_AMD_DC_HDCP +DC_LIBS += hdcp +endif + AMD_DC = $(addsuffix /Makefile, $(addprefix $(FULL_AMD_DISPLAY_PATH)/dc/,$(DC_LIBS))) include $(AMD_DC) diff --git a/drivers/gpu/drm/amd/display/dc/hdcp/Makefile b/drivers/gpu/drm/amd/display/dc/hdcp/Makefile new file mode 100644 index 000000000000..4170b6eb9ec0 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/hdcp/Makefile @@ -0,0 +1,28 @@ +# Copyright 2019 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. +# +# Makefile for the 'hdcp' sub-component of DAL. +# + +HDCP_MSG = hdcp_msg.o + +AMD_DAL_HDCP_MSG = $(addprefix $(AMDDALPATH)/dc/hdcp/,$(HDCP_MSG)) + +AMD_DISPLAY_FILES += $(AMD_DAL_HDCP_MSG) diff --git a/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c new file mode 100644 index 000000000000..cf6ef387e5d2 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c @@ -0,0 +1,326 @@ +/* + * Copyright 2019 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 <linux/slab.h> + +#include "dm_services.h" +#include "dm_helpers.h" +#include "include/hdcp_types.h" +#include "include/i2caux_interface.h" +#include "include/signal_types.h" +#include "core_types.h" +#include "dc_link_ddc.h" +#include "link_hwss.h" + +#define DC_LOGGER \ + link->ctx->logger +#define HDCP14_KSV_SIZE 5 +#define HDCP14_MAX_KSV_FIFO_SIZE 127*HDCP14_KSV_SIZE + +static const bool hdcp_cmd_is_read[] = { + [HDCP_MESSAGE_ID_READ_BKSV] = true, + [HDCP_MESSAGE_ID_READ_RI_R0] = true, + [HDCP_MESSAGE_ID_READ_PJ] = true, + [HDCP_MESSAGE_ID_WRITE_AKSV] = false, + [HDCP_MESSAGE_ID_WRITE_AINFO] = false, + [HDCP_MESSAGE_ID_WRITE_AN] = false, + [HDCP_MESSAGE_ID_READ_VH_X] = true, + [HDCP_MESSAGE_ID_READ_VH_0] = true, + [HDCP_MESSAGE_ID_READ_VH_1] = true, + [HDCP_MESSAGE_ID_READ_VH_2] = true, + [HDCP_MESSAGE_ID_READ_VH_3] = true, + [HDCP_MESSAGE_ID_READ_VH_4] = true, + [HDCP_MESSAGE_ID_READ_BCAPS] = true, + [HDCP_MESSAGE_ID_READ_BSTATUS] = true, + [HDCP_MESSAGE_ID_READ_KSV_FIFO] = true, + [HDCP_MESSAGE_ID_READ_BINFO] = true, + [HDCP_MESSAGE_ID_HDCP2VERSION] = true, + [HDCP_MESSAGE_ID_RX_CAPS] = true, + [HDCP_MESSAGE_ID_WRITE_AKE_INIT] = false, + [HDCP_MESSAGE_ID_READ_AKE_SEND_CERT] = true, + [HDCP_MESSAGE_ID_WRITE_AKE_NO_STORED_KM] = false, + [HDCP_MESSAGE_ID_WRITE_AKE_STORED_KM] = false, + [HDCP_MESSAGE_ID_READ_AKE_SEND_H_PRIME] = true, + [HDCP_MESSAGE_ID_READ_AKE_SEND_PAIRING_INFO] = true, + [HDCP_MESSAGE_ID_WRITE_LC_INIT] = false, + [HDCP_MESSAGE_ID_READ_LC_SEND_L_PRIME] = true, + [HDCP_MESSAGE_ID_WRITE_SKE_SEND_EKS] = false, + [HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST] = true, + [HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_SEND_ACK] = false, + [HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_STREAM_MANAGE] = false, + [HDCP_MESSAGE_ID_READ_REPEATER_AUTH_STREAM_READY] = true, + [HDCP_MESSAGE_ID_READ_RXSTATUS] = true, + [HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE] = false +}; + +static const uint8_t hdcp_i2c_offsets[] = { + [HDCP_MESSAGE_ID_READ_BKSV] = 0x0, + [HDCP_MESSAGE_ID_READ_RI_R0] = 0x8, + [HDCP_MESSAGE_ID_READ_PJ] = 0xA, + [HDCP_MESSAGE_ID_WRITE_AKSV] = 0x10, + [HDCP_MESSAGE_ID_WRITE_AINFO] = 0x15, + [HDCP_MESSAGE_ID_WRITE_AN] = 0x18, + [HDCP_MESSAGE_ID_READ_VH_X] = 0x20, + [HDCP_MESSAGE_ID_READ_VH_0] = 0x20, + [HDCP_MESSAGE_ID_READ_VH_1] = 0x24, + [HDCP_MESSAGE_ID_READ_VH_2] = 0x28, + [HDCP_MESSAGE_ID_READ_VH_3] = 0x2C, + [HDCP_MESSAGE_ID_READ_VH_4] = 0x30, + [HDCP_MESSAGE_ID_READ_BCAPS] = 0x40, + [HDCP_MESSAGE_ID_READ_BSTATUS] = 0x41, + [HDCP_MESSAGE_ID_READ_KSV_FIFO] = 0x43, + [HDCP_MESSAGE_ID_READ_BINFO] = 0xFF, + [HDCP_MESSAGE_ID_HDCP2VERSION] = 0x50, + [HDCP_MESSAGE_ID_WRITE_AKE_INIT] = 0x60, + [HDCP_MESSAGE_ID_READ_AKE_SEND_CERT] = 0x80, + [HDCP_MESSAGE_ID_WRITE_AKE_NO_STORED_KM] = 0x60, + [HDCP_MESSAGE_ID_WRITE_AKE_STORED_KM] = 0x60, + [HDCP_MESSAGE_ID_READ_AKE_SEND_H_PRIME] = 0x80, + [HDCP_MESSAGE_ID_READ_AKE_SEND_PAIRING_INFO] = 0x80, + [HDCP_MESSAGE_ID_WRITE_LC_INIT] = 0x60, + [HDCP_MESSAGE_ID_READ_LC_SEND_L_PRIME] = 0x80, + [HDCP_MESSAGE_ID_WRITE_SKE_SEND_EKS] = 0x60, + [HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST] = 0x80, + [HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_SEND_ACK] = 0x60, + [HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_STREAM_MANAGE] = 0x60, + [HDCP_MESSAGE_ID_READ_REPEATER_AUTH_STREAM_READY] = 0x80, + [HDCP_MESSAGE_ID_READ_RXSTATUS] = 0x70 +}; + +struct protection_properties { + bool supported; + bool (*process_transaction)( + struct dc_link *link, + struct hdcp_protection_message *message_info); +}; + +static const struct protection_properties non_supported_protection = { + .supported = false +}; + +static bool hdmi_14_process_transaction( + struct dc_link *link, + struct hdcp_protection_message *message_info) +{ + uint8_t *buff = NULL; + bool result; + const uint8_t hdcp_i2c_addr_link_primary = 0x3a; /* 0x74 >> 1*/ + const uint8_t hdcp_i2c_addr_link_secondary = 0x3b; /* 0x76 >> 1*/ + struct i2c_command i2c_command; + uint8_t offset = hdcp_i2c_offsets[message_info->msg_id]; + struct i2c_payload i2c_payloads[] = { + { true, 0, 1, &offset }, + /* actual hdcp payload, will be filled later, zeroed for now*/ + { 0 } + }; + + switch (message_info->link) { + case HDCP_LINK_SECONDARY: + i2c_payloads[0].address = hdcp_i2c_addr_link_secondary; + i2c_payloads[1].address = hdcp_i2c_addr_link_secondary; + break; + case HDCP_LINK_PRIMARY: + default: + i2c_payloads[0].address = hdcp_i2c_addr_link_primary; + i2c_payloads[1].address = hdcp_i2c_addr_link_primary; + break; + } + + if (hdcp_cmd_is_read[message_info->msg_id]) { + i2c_payloads[1].write = false; + i2c_command.number_of_payloads = ARRAY_SIZE(i2c_payloads); + i2c_payloads[1].length = message_info->length; + i2c_payloads[1].data = message_info->data; + } else { + i2c_command.number_of_payloads = 1; + buff = kzalloc(message_info->length + 1, GFP_KERNEL); + + if (!buff) + return false; + + buff[0] = offset; + memmove(&buff[1], message_info->data, message_info->length); + i2c_payloads[0].length = message_info->length + 1; + i2c_payloads[0].data = buff; + } + + i2c_command.payloads = i2c_payloads; + i2c_command.engine = I2C_COMMAND_ENGINE_HW;//only HW + i2c_command.speed = link->ddc->ctx->dc->caps.i2c_speed_in_khz; + + result = dm_helpers_submit_i2c( + link->ctx, + link, + &i2c_command); + + if (buff) + kfree(buff); + + return result; +} + +static const struct protection_properties hdmi_14_protection = { + .supported = true, + .process_transaction = hdmi_14_process_transaction +}; + +static const uint32_t hdcp_dpcd_addrs[] = { + [HDCP_MESSAGE_ID_READ_BKSV] = 0x68000, + [HDCP_MESSAGE_ID_READ_RI_R0] = 0x68005, + [HDCP_MESSAGE_ID_READ_PJ] = 0xFFFFFFFF, + [HDCP_MESSAGE_ID_WRITE_AKSV] = 0x68007, + [HDCP_MESSAGE_ID_WRITE_AINFO] = 0x6803B, + [HDCP_MESSAGE_ID_WRITE_AN] = 0x6800c, + [HDCP_MESSAGE_ID_READ_VH_X] = 0x68014, + [HDCP_MESSAGE_ID_READ_VH_0] = 0x68014, + [HDCP_MESSAGE_ID_READ_VH_1] = 0x68018, + [HDCP_MESSAGE_ID_READ_VH_2] = 0x6801c, + [HDCP_MESSAGE_ID_READ_VH_3] = 0x68020, + [HDCP_MESSAGE_ID_READ_VH_4] = 0x68024, + [HDCP_MESSAGE_ID_READ_BCAPS] = 0x68028, + [HDCP_MESSAGE_ID_READ_BSTATUS] = 0x68029, + [HDCP_MESSAGE_ID_READ_KSV_FIFO] = 0x6802c, + [HDCP_MESSAGE_ID_READ_BINFO] = 0x6802a, + [HDCP_MESSAGE_ID_RX_CAPS] = 0x6921d, + [HDCP_MESSAGE_ID_WRITE_AKE_INIT] = 0x69000, + [HDCP_MESSAGE_ID_READ_AKE_SEND_CERT] = 0x6900b, + [HDCP_MESSAGE_ID_WRITE_AKE_NO_STORED_KM] = 0x69220, + [HDCP_MESSAGE_ID_WRITE_AKE_STORED_KM] = 0x692a0, + [HDCP_MESSAGE_ID_READ_AKE_SEND_H_PRIME] = 0x692c0, + [HDCP_MESSAGE_ID_READ_AKE_SEND_PAIRING_INFO] = 0x692e0, + [HDCP_MESSAGE_ID_WRITE_LC_INIT] = 0x692f0, + [HDCP_MESSAGE_ID_READ_LC_SEND_L_PRIME] = 0x692f8, + [HDCP_MESSAGE_ID_WRITE_SKE_SEND_EKS] = 0x69318, + [HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST] = 0x69330, + [HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_SEND_ACK] = 0x693e0, + [HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_STREAM_MANAGE] = 0x693f0, + [HDCP_MESSAGE_ID_READ_REPEATER_AUTH_STREAM_READY] = 0x69473, + [HDCP_MESSAGE_ID_READ_RXSTATUS] = 0x69493, + [HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE] = 0x69494 +}; + +static bool dpcd_access_helper( + struct dc_link *link, + uint32_t length, + uint8_t *data, + uint32_t dpcd_addr, + bool is_read) +{ + enum dc_status status; + uint32_t cur_length = 0; + uint32_t offset = 0; + uint32_t ksv_read_size = 0x6803b - 0x6802c; + + /* Read KSV, need repeatedly handle */ + if (dpcd_addr == 0x6802c) { + if (length % HDCP14_KSV_SIZE) { + DC_LOG_ERROR("%s: KsvFifo Size(%d) is not a multiple of HDCP14_KSV_SIZE(%d)\n", + __func__, + length, + HDCP14_KSV_SIZE); + } + if (length > HDCP14_MAX_KSV_FIFO_SIZE) { + DC_LOG_ERROR("%s: KsvFifo Size(%d) is greater than HDCP14_MAX_KSV_FIFO_SIZE(%d)\n", + __func__, + length, + HDCP14_MAX_KSV_FIFO_SIZE); + } + + DC_LOG_ERROR("%s: Reading %d Ksv(s) from KsvFifo\n", + __func__, + length / HDCP14_KSV_SIZE); + + while (length > 0) { + if (length > ksv_read_size) { + status = core_link_read_dpcd( + link, + dpcd_addr + offset, + data + offset, + ksv_read_size); + + data += ksv_read_size; + length -= ksv_read_size; + } else { + status = core_link_read_dpcd( + link, + dpcd_addr + offset, + data + offset, + length); + + data += length; + length = 0; + } + + if (status != DC_OK) + return false; + } + } else { + while (length > 0) { + if (length > DEFAULT_AUX_MAX_DATA_SIZE) + cur_length = DEFAULT_AUX_MAX_DATA_SIZE; + else + cur_length = length; + + if (is_read) { + status = core_link_read_dpcd( + link, + dpcd_addr + offset, + data + offset, + cur_length); + } else { + status = core_link_write_dpcd( + link, + dpcd_addr + offset, + data + offset, + cur_length); + } + + if (status != DC_OK) + return false; + + length -= cur_length; + offset += cur_length; + } + } + return true; +} + +static bool dp_11_process_transaction( + struct dc_link *link, + struct hdcp_protection_message *message_info) +{ + return dpcd_access_helper( + link, + message_info->length, + message_info->data, + hdcp_dpcd_addrs[message_info->msg_id], + hdcp_cmd_is_read[message_info->msg_id]); +} + +static const struct protection_properties dp_11_protection = { + .supported = true, + .process_transaction = dp_11_process_transaction +}; + diff --git a/drivers/gpu/drm/amd/display/include/hdcp_types.h b/drivers/gpu/drm/amd/display/include/hdcp_types.h new file mode 100644 index 000000000000..f31e6befc8d6 --- /dev/null +++ b/drivers/gpu/drm/amd/display/include/hdcp_types.h @@ -0,0 +1,96 @@ +/* +* Copyright 2019 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 +* +*/ + +#ifndef __DC_HDCP_TYPES_H__ +#define __DC_HDCP_TYPES_H__ + +enum hdcp_message_id { + HDCP_MESSAGE_ID_INVALID = -1, + + /* HDCP 1.4 */ + + HDCP_MESSAGE_ID_READ_BKSV = 0, + /* HDMI is called Ri', DP is called R0' */ + HDCP_MESSAGE_ID_READ_RI_R0, + HDCP_MESSAGE_ID_READ_PJ, + HDCP_MESSAGE_ID_WRITE_AKSV, + HDCP_MESSAGE_ID_WRITE_AINFO, + HDCP_MESSAGE_ID_WRITE_AN, + HDCP_MESSAGE_ID_READ_VH_X, + HDCP_MESSAGE_ID_READ_VH_0, + HDCP_MESSAGE_ID_READ_VH_1, + HDCP_MESSAGE_ID_READ_VH_2, + HDCP_MESSAGE_ID_READ_VH_3, + HDCP_MESSAGE_ID_READ_VH_4, + HDCP_MESSAGE_ID_READ_BCAPS, + HDCP_MESSAGE_ID_READ_BSTATUS, + HDCP_MESSAGE_ID_READ_KSV_FIFO, + HDCP_MESSAGE_ID_READ_BINFO, + + /* HDCP 2.2 */ + + HDCP_MESSAGE_ID_HDCP2VERSION, + HDCP_MESSAGE_ID_RX_CAPS, + HDCP_MESSAGE_ID_WRITE_AKE_INIT, + HDCP_MESSAGE_ID_READ_AKE_SEND_CERT, + HDCP_MESSAGE_ID_WRITE_AKE_NO_STORED_KM, + HDCP_MESSAGE_ID_WRITE_AKE_STORED_KM, + HDCP_MESSAGE_ID_READ_AKE_SEND_H_PRIME, + HDCP_MESSAGE_ID_READ_AKE_SEND_PAIRING_INFO, + HDCP_MESSAGE_ID_WRITE_LC_INIT, + HDCP_MESSAGE_ID_READ_LC_SEND_L_PRIME, + HDCP_MESSAGE_ID_WRITE_SKE_SEND_EKS, + HDCP_MESSAGE_ID_READ_REPEATER_AUTH_SEND_RECEIVERID_LIST, + HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_SEND_ACK, + HDCP_MESSAGE_ID_WRITE_REPEATER_AUTH_STREAM_MANAGE, + HDCP_MESSAGE_ID_READ_REPEATER_AUTH_STREAM_READY, + HDCP_MESSAGE_ID_READ_RXSTATUS, + HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE, + + HDCP_MESSAGE_ID_MAX +}; + +enum hdcp_version { + HDCP_Unknown = 0, + HDCP_VERSION_14, + HDCP_VERSION_22, +}; + +enum hdcp_link { + HDCP_LINK_PRIMARY, + HDCP_LINK_SECONDARY +}; + +struct hdcp_protection_message { + enum hdcp_version version; + /* relevant only for DVI */ + enum hdcp_link link; + enum hdcp_message_id msg_id; + uint32_t length; + uint8_t max_retries; + uint8_t *data; +}; + +#endif diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/Makefile b/drivers/gpu/drm/amd/display/modules/hdcp/Makefile new file mode 100644 index 000000000000..1c3c6d47973a --- /dev/null +++ b/drivers/gpu/drm/amd/display/modules/hdcp/Makefile @@ -0,0 +1,32 @@ +# +# Copyright 2019 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. +# +# +# Makefile for the 'hdcp' sub-module of DAL. +# + +HDCP = hdcp_ddc.o hdcp_log.o hdcp_psp.o hdcp.o \ + hdcp1_execution.o hdcp1_transition.o + +AMD_DAL_HDCP = $(addprefix $(AMDDALPATH)/modules/hdcp/,$(HDCP)) +#$(info ************ DAL-HDCP_MAKEFILE ************) + +AMD_DISPLAY_FILES += $(AMD_DAL_HDCP) diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c new file mode 100644 index 000000000000..d7ac445dec6f --- /dev/null +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c @@ -0,0 +1,426 @@ +/* + * Copyright 2019 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 void push_error_status(struct mod_hdcp *hdcp, + enum mod_hdcp_status status) +{ + struct mod_hdcp_trace *trace = &hdcp->connection.trace; + + if (trace->error_count < MAX_NUM_OF_ERROR_TRACE) { + trace->errors[trace->error_count].status = status; + trace->errors[trace->error_count].state_id = hdcp->state.id; + trace->error_count++; + HDCP_ERROR_TRACE(hdcp, status); + } + + hdcp->connection.hdcp1_retry_count++; +} + +static uint8_t is_cp_desired_hdcp1(struct mod_hdcp *hdcp) +{ + int i, display_enabled = 0; + + /* if all displays on the link are disabled, 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; + break; + } + } + + return (hdcp->connection.hdcp1_retry_count < MAX_NUM_OF_ATTEMPTS) && + display_enabled && !hdcp->connection.link.adjust.hdcp1.disable; +} + +static enum mod_hdcp_status execution(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + union mod_hdcp_transition_input *input) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (is_in_initialized_state(hdcp)) { + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { + event_ctx->unexpected_event = 1; + goto out; + } + /* initialize transition input */ + memset(input, 0, sizeof(union mod_hdcp_transition_input)); + } else if (is_in_cp_not_desired_state(hdcp)) { + if (event_ctx->event != MOD_HDCP_EVENT_CALLBACK) { + event_ctx->unexpected_event = 1; + goto out; + } + /* update topology event if hdcp is not desired */ + status = mod_hdcp_add_display_topology(hdcp); + } else if (is_in_hdcp1_states(hdcp)) { + status = mod_hdcp_hdcp1_execution(hdcp, event_ctx, &input->hdcp1); + } else if (is_in_hdcp1_dp_states(hdcp)) { + status = mod_hdcp_hdcp1_dp_execution(hdcp, + event_ctx, &input->hdcp1); + } +out: + return status; +} + +static enum mod_hdcp_status transition(struct mod_hdcp *hdcp, + struct mod_hdcp_event_context *event_ctx, + union mod_hdcp_transition_input *input, + struct mod_hdcp_output *output) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (event_ctx->unexpected_event) + goto out; + + if (is_in_initialized_state(hdcp)) { + if (is_dp_hdcp(hdcp)) + if (is_cp_desired_hdcp1(hdcp)) { + callback_in_ms(0, output); + set_state_id(hdcp, output, D1_A0_DETERMINE_RX_HDCP_CAPABLE); + } else { + callback_in_ms(0, output); + set_state_id(hdcp, output, HDCP_CP_NOT_DESIRED); + } + else if (is_hdmi_dvi_sl_hdcp(hdcp)) + if (is_cp_desired_hdcp1(hdcp)) { + callback_in_ms(0, output); + set_state_id(hdcp, output, H1_A0_WAIT_FOR_ACTIVE_RX); + } else { + callback_in_ms(0, output); + set_state_id(hdcp, output, HDCP_CP_NOT_DESIRED); + } + else { + callback_in_ms(0, output); + set_state_id(hdcp, output, HDCP_CP_NOT_DESIRED); + } + } else if (is_in_cp_not_desired_state(hdcp)) { + increment_stay_counter(hdcp); + } else if (is_in_hdcp1_states(hdcp)) { + status = mod_hdcp_hdcp1_transition(hdcp, + event_ctx, &input->hdcp1, output); + } else if (is_in_hdcp1_dp_states(hdcp)) { + status = mod_hdcp_hdcp1_dp_transition(hdcp, + event_ctx, &input->hdcp1, output); + } else { + status = MOD_HDCP_STATUS_INVALID_STATE; + } +out: + return status; +} + +static enum mod_hdcp_status reset_authentication(struct mod_hdcp *hdcp, + struct mod_hdcp_output *output) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + if (is_hdcp1(hdcp)) { + if (hdcp->auth.trans_input.hdcp1.create_session != UNKNOWN) + 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) { + 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) { + 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); + } + +out: + /* stop callback and watchdog requests from previous authentication*/ + output->watchdog_timer_stop = 1; + output->callback_stop = 1; + return status; +} + +static enum mod_hdcp_status reset_connection(struct mod_hdcp *hdcp, + struct mod_hdcp_output *output) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + memset(output, 0, sizeof(struct mod_hdcp_output)); + + status = reset_authentication(hdcp, output); + if (status != MOD_HDCP_STATUS_SUCCESS) + goto out; + + if (current_state(hdcp) != HDCP_UNINITIALIZED) { + HDCP_TOP_RESET_CONN_TRACE(hdcp); + set_state_id(hdcp, output, HDCP_UNINITIALIZED); + } + memset(&hdcp->connection, 0, sizeof(hdcp->connection)); +out: + return status; +} + +/* + * Implementation of functions in mod_hdcp.h + */ +size_t mod_hdcp_get_memory_size(void) +{ + return sizeof(struct mod_hdcp); +} + +enum mod_hdcp_status mod_hdcp_setup(struct mod_hdcp *hdcp, + struct mod_hdcp_config *config) +{ + struct mod_hdcp_output output; + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + memset(hdcp, 0, sizeof(struct mod_hdcp)); + memset(&output, 0, sizeof(output)); + hdcp->config = *config; + HDCP_TOP_INTERFACE_TRACE(hdcp); + status = reset_connection(hdcp, &output); + if (status != MOD_HDCP_STATUS_SUCCESS) + push_error_status(hdcp, status); + return status; +} + +enum mod_hdcp_status mod_hdcp_teardown(struct mod_hdcp *hdcp) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + struct mod_hdcp_output output; + + HDCP_TOP_INTERFACE_TRACE(hdcp); + memset(&output, 0, sizeof(output)); + status = reset_connection(hdcp, &output); + if (status == MOD_HDCP_STATUS_SUCCESS) + memset(hdcp, 0, sizeof(struct mod_hdcp)); + else + push_error_status(hdcp, status); + return status; +} + +enum mod_hdcp_status mod_hdcp_add_display(struct mod_hdcp *hdcp, + struct mod_hdcp_link *link, struct mod_hdcp_display *display, + struct mod_hdcp_output *output) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + struct mod_hdcp_display *display_container = NULL; + + HDCP_TOP_INTERFACE_TRACE_WITH_INDEX(hdcp, display->index); + memset(output, 0, sizeof(struct mod_hdcp_output)); + + /* skip inactive display */ + if (display->state != MOD_HDCP_DISPLAY_ACTIVE) { + status = MOD_HDCP_STATUS_SUCCESS; + goto out; + } + + /* check existing display container */ + if (get_active_display_at_index(hdcp, display->index)) { + status = MOD_HDCP_STATUS_SUCCESS; + goto out; + } + + /* find an empty display container */ + display_container = get_empty_display_container(hdcp); + if (!display_container) { + status = MOD_HDCP_STATUS_DISPLAY_OUT_OF_BOUND; + goto out; + } + + /* reset existing authentication status */ + status = reset_authentication(hdcp, output); + if (status != MOD_HDCP_STATUS_SUCCESS) + goto out; + + /* add display to connection */ + hdcp->connection.link = *link; + *display_container = *display; + + /* reset retry counters */ + reset_retry_counts(hdcp); + + /* reset error trace */ + memset(&hdcp->connection.trace, 0, sizeof(hdcp->connection.trace)); + + /* request authentication */ + if (current_state(hdcp) != HDCP_INITIALIZED) + set_state_id(hdcp, output, HDCP_INITIALIZED); + callback_in_ms(hdcp->connection.link.adjust.auth_delay * 1000, output); +out: + if (status != MOD_HDCP_STATUS_SUCCESS) + push_error_status(hdcp, status); + + return status; +} + +enum mod_hdcp_status mod_hdcp_remove_display(struct mod_hdcp *hdcp, + uint8_t index, struct mod_hdcp_output *output) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + struct mod_hdcp_display *display = NULL; + + HDCP_TOP_INTERFACE_TRACE_WITH_INDEX(hdcp, index); + memset(output, 0, sizeof(struct mod_hdcp_output)); + + /* find display in connection */ + display = get_active_display_at_index(hdcp, index); + if (!display) { + status = MOD_HDCP_STATUS_SUCCESS; + goto out; + } + + /* stop current authentication */ + status = reset_authentication(hdcp, output); + if (status != MOD_HDCP_STATUS_SUCCESS) + goto out; + + /* remove display */ + display->state = MOD_HDCP_DISPLAY_INACTIVE; + + /* clear retry counters */ + reset_retry_counts(hdcp); + + /* reset error trace */ + memset(&hdcp->connection.trace, 0, sizeof(hdcp->connection.trace)); + + /* request authentication for remaining displays*/ + if (get_active_display_count(hdcp) > 0) + callback_in_ms(hdcp->connection.link.adjust.auth_delay * 1000, + output); +out: + if (status != MOD_HDCP_STATUS_SUCCESS) + push_error_status(hdcp, status); + return status; +} + +enum mod_hdcp_status mod_hdcp_query_display(struct mod_hdcp *hdcp, + uint8_t index, struct mod_hdcp_display_query *query) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + struct mod_hdcp_display *display = NULL; + + /* find display in connection */ + display = get_active_display_at_index(hdcp, index); + if (!display) { + status = MOD_HDCP_STATUS_DISPLAY_NOT_FOUND; + goto out; + } + + /* populate query */ + query->link = &hdcp->connection.link; + query->display = display; + query->trace = &hdcp->connection.trace; + query->encryption_status = MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF; + + mod_hdcp_hdcp1_get_link_encryption_status(hdcp, &query->encryption_status); + +out: + return status; +} + +enum mod_hdcp_status mod_hdcp_reset_connection(struct mod_hdcp *hdcp, + struct mod_hdcp_output *output) +{ + enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS; + + HDCP_TOP_INTERFACE_TRACE(hdcp); + status = reset_connection(hdcp, output); + if (status != MOD_HDCP_STATUS_SUCCESS) + push_error_status(hdcp, status); + + return status; +} + +enum mod_hdcp_status mod_hdcp_process_event(struct mod_hdcp *hdcp, + enum mod_hdcp_event event, struct mod_hdcp_output *output) +{ + enum mod_hdcp_status exec_status, trans_status, reset_status, status; + struct mod_hdcp_event_context event_ctx; + + HDCP_EVENT_TRACE(hdcp, event); + memset(output, 0, sizeof(struct mod_hdcp_output)); + memset(&event_ctx, 0, sizeof(struct mod_hdcp_event_context)); + event_ctx.event = event; + + /* execute and transition */ + exec_status = execution(hdcp, &event_ctx, &hdcp->auth.trans_input); + trans_status = transition( + hdcp, &event_ctx, &hdcp->auth.trans_input, output); + if (trans_status == MOD_HDCP_STATUS_SUCCESS) { + status = MOD_HDCP_STATUS_SUCCESS; + } else if (exec_status == MOD_HDCP_STATUS_SUCCESS) { + status = MOD_HDCP_STATUS_INTERNAL_POLICY_FAILURE; + push_error_status(hdcp, status); + } else { + status = exec_status; + push_error_status(hdcp, status); |