SDMA_OPCODE_NOP
.nop = SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0),
SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0) |
SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0);
SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0));
SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0));
radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0));
ib->ptr[ib->length_dw++] = SDMA_PACKET(SDMA_OPCODE_NOP, 0, 0);