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drm/amdgpu: add atomfirmware helper funciton to query reserved fb size

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fw_reserved_size_in_kb is introduced for driver to query
the TMR region reserved by PSP BL in Sienna_Cichlid and onwards

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Hawking Zhang 2020-01-23 04:13:01 +08:00 • committed by Alex Deucher
parent 718715e6a4
commit 9a244ebe81
2 changed files with 39 additions and 0 deletions
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38
drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
View file

@ -325,6 +325,9 @@ bool amdgpu_atomfirmware_mem_ecc_supported(struct amdgpu_device *adev)
union firmware_info { union firmware_info {
struct atom_firmware_info_v3_1 v31; struct atom_firmware_info_v3_1 v31;
struct atom_firmware_info_v3_2 v32;
struct atom_firmware_info_v3_3 v33;
struct atom_firmware_info_v3_4 v34;
}; };
/* /*
@ -590,3 +593,38 @@ int amdgpu_atomfirmware_get_mem_train_info(struct amdgpu_device *adev)
adev->fw_vram_usage.mem_train_support = true; adev->fw_vram_usage.mem_train_support = true;
return 0; return 0;
} }
int amdgpu_atomfirmware_get_fw_reserved_fb_size(struct amdgpu_device *adev)
{
struct atom_context *ctx = adev->mode_info.atom_context;
union firmware_info *firmware_info;
int index;
u16 data_offset, size;
u8 frev, crev;
int fw_reserved_fb_size;
index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
firmwareinfo);
if (!amdgpu_atom_parse_data_header(ctx, index, &size,
&frev, &crev, &data_offset))
/* fail to parse data_header */
return 0;
firmware_info = (union firmware_info *)(ctx->bios + data_offset);
if (frev !=3)
return -EINVAL;
switch (crev) {
case 4:
fw_reserved_fb_size =
(firmware_info->v34.fw_reserved_size_in_kb << 10);
break;
default:
fw_reserved_fb_size = 0;
break;
}
return fw_reserved_fb_size;
}

1
drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h
View file

@ -36,5 +36,6 @@ int amdgpu_atomfirmware_get_clock_info(struct amdgpu_device *adev);
int amdgpu_atomfirmware_get_gfx_info(struct amdgpu_device *adev); int amdgpu_atomfirmware_get_gfx_info(struct amdgpu_device *adev);
bool amdgpu_atomfirmware_mem_ecc_supported(struct amdgpu_device *adev); bool amdgpu_atomfirmware_mem_ecc_supported(struct amdgpu_device *adev);
bool amdgpu_atomfirmware_sram_ecc_supported(struct amdgpu_device *adev); bool amdgpu_atomfirmware_sram_ecc_supported(struct amdgpu_device *adev);
int amdgpu_atomfirmware_get_fw_reserved_fb_size(struct amdgpu_device *adev);
#endif #endif