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drm/amdgpu: add nbio callback to query rom offset

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Add nbio callback func used to query rom offset.
Used to query the rom offset for fetching the vbios.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Hawking Zhang 2022-01-08 17:18:37 +08:00 committed by Alex Deucher
parent f33ac92f9c
commit fb1d683513
2 changed files with 12 additions and 2 deletions
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13
drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
View File

@ -471,6 +471,7 @@ bool amdgpu_soc15_read_bios_from_rom(struct amdgpu_device *adev,
{
u32 *dw_ptr;
u32 i, length_dw;
u32 rom_offset;
u32 rom_index_offset;
u32 rom_data_offset;
@ -494,8 +495,16 @@ bool amdgpu_soc15_read_bios_from_rom(struct amdgpu_device *adev,
rom_data_offset =
adev->smuio.funcs->get_rom_data_offset(adev);
/* set rom index to 0 */
WREG32(rom_index_offset, 0);
if (adev->nbio.funcs &&
adev->nbio.funcs->get_rom_offset) {
rom_offset = adev->nbio.funcs->get_rom_offset(adev);
rom_offset = rom_offset << 17;
} else {
rom_offset = 0;
}
/* set rom index to rom_offset */
WREG32(rom_index_offset, rom_offset);
/* read out the rom data */
for (i = 0; i < length_dw; i++)
dw_ptr[i] = RREG32(rom_data_offset);

1
drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h
View File

@ -93,6 +93,7 @@ struct amdgpu_nbio_funcs {
void (*apply_lc_spc_mode_wa)(struct amdgpu_device *adev);
void (*apply_l1_link_width_reconfig_wa)(struct amdgpu_device *adev);
void (*clear_doorbell_interrupt)(struct amdgpu_device *adev);
u32 (*get_rom_offset)(struct amdgpu_device *adev);
};
struct amdgpu_nbio {