diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/hdcp')
-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 |
2 files changed, 354 insertions, 0 deletions
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 +}; + |