AMDGPU_VCNFW_LOG_SIZE
if (read_pos > AMDGPU_VCNFW_LOG_SIZE || write_pos > AMDGPU_VCNFW_LOG_SIZE)
read_num[0] = AMDGPU_VCNFW_LOG_SIZE - read_pos;
if (read_pos == AMDGPU_VCNFW_LOG_SIZE)
AMDGPU_VCNFW_LOG_SIZE);
fw_log->size = cpu_to_le32(AMDGPU_VCNFW_LOG_SIZE);
log_buf->buffer_size = AMDGPU_VCNFW_LOG_SIZE;
bo_size += AMDGPU_VCNFW_LOG_SIZE;
adev->vcn.inst[i].fw_shared.cpu_addr -= AMDGPU_VCNFW_LOG_SIZE;
adev->vcn.inst[i].fw_shared.gpu_addr -= AMDGPU_VCNFW_LOG_SIZE;