From 2ec3a0f0f17c20eccc3789fd844ba36755b7fe12 Mon Sep 17 00:00:00 2001 From: George Shen Date: Wed, 2 Nov 2022 15:06:48 -0400 Subject: drm/amd/display: Support parsing VRAM info v3.0 from VBIOS [Why] For DCN3.2 and DCN3.21, VBIOS has switch to using v3.0 of the VRAM info struct. We should read and override the VRAM info in driver with values provided by VBIOS to support memory downbin cases. Reviewed-by: Alvin Lee Acked-by: Tom Chung Signed-off-by: George Shen Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c') diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c index ee0456b5e14e..e0c8d6f09bb4 100644 --- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c +++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c @@ -2393,6 +2393,26 @@ static enum bp_result get_vram_info_v25( return result; } +static enum bp_result get_vram_info_v30( + struct bios_parser *bp, + struct dc_vram_info *info) +{ + struct atom_vram_info_header_v3_0 *info_v30; + enum bp_result result = BP_RESULT_OK; + + info_v30 = GET_IMAGE(struct atom_vram_info_header_v3_0, + DATA_TABLES(vram_info)); + + if (info_v30 == NULL) + return BP_RESULT_BADBIOSTABLE; + + info->num_chans = info_v30->channel_num; + info->dram_channel_width_bytes = (1 << info_v30->channel_width) / 8; + + return result; +} + + /* * get_integrated_info_v11 * @@ -3060,6 +3080,16 @@ static enum bp_result bios_parser_get_vram_info( } break; + case 3: + switch (revision.minor) { + case 0: + result = get_vram_info_v30(bp, info); + break; + default: + break; + } + break; + default: return result; } -- cgit From 4fc1ba4aa589ca267468ad23fedef37562227d32 Mon Sep 17 00:00:00 2001 From: Aurabindo Pillai Date: Wed, 2 Nov 2022 15:35:53 -0400 Subject: drm/amd/display: fix array index out of bound error in bios parser [Why&How] Firmware headers dictate that gpio_pin array only has a size of 8. The count returned from vbios however is greater than 8. Fix this by not using array indexing but incrementing the pointer since gpio_pin definition in atomfirmware.h is hardcoded to size 8 Reviewed-by: Martin Leung Acked-by: Tom Chung Signed-off-by: Aurabindo Pillai Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) (limited to 'drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c') diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c index e0c8d6f09bb4..074e70a5c458 100644 --- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c +++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c @@ -462,6 +462,7 @@ static enum bp_result get_gpio_i2c_info( uint32_t count = 0; unsigned int table_index = 0; bool find_valid = false; + struct atom_gpio_pin_assignment *pin; if (!info) return BP_RESULT_BADINPUT; @@ -489,20 +490,17 @@ static enum bp_result get_gpio_i2c_info( - sizeof(struct atom_common_table_header)) / sizeof(struct atom_gpio_pin_assignment); + pin = (struct atom_gpio_pin_assignment *) header->gpio_pin; + for (table_index = 0; table_index < count; table_index++) { - if (((record->i2c_id & I2C_HW_CAP) == ( - header->gpio_pin[table_index].gpio_id & - I2C_HW_CAP)) && - ((record->i2c_id & I2C_HW_ENGINE_ID_MASK) == - (header->gpio_pin[table_index].gpio_id & - I2C_HW_ENGINE_ID_MASK)) && - ((record->i2c_id & I2C_HW_LANE_MUX) == - (header->gpio_pin[table_index].gpio_id & - I2C_HW_LANE_MUX))) { + if (((record->i2c_id & I2C_HW_CAP) == (pin->gpio_id & I2C_HW_CAP)) && + ((record->i2c_id & I2C_HW_ENGINE_ID_MASK) == (pin->gpio_id & I2C_HW_ENGINE_ID_MASK)) && + ((record->i2c_id & I2C_HW_LANE_MUX) == (pin->gpio_id & I2C_HW_LANE_MUX))) { /* still valid */ find_valid = true; break; } + pin = (struct atom_gpio_pin_assignment *)((uint8_t *)pin + sizeof(struct atom_gpio_pin_assignment)); } /* If we don't find the entry that we are looking for then -- cgit