UVD_GPCOM_VCPU_CMD
data[2] = PACKET0(offset + UVD_GPCOM_VCPU_CMD, 0);
case UVD_GPCOM_VCPU_CMD:
ib.ptr[4] = PACKET0(UVD_GPCOM_VCPU_CMD, 0);
radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_CMD, 0));
radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_CMD, 0));
radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_CMD, 0));
radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_CMD, 0));