NV10_PFIFO_CACHE1_SEMAPHORE
sem = nvkm_rd32(device, NV10_PFIFO_CACHE1_SEMAPHORE);
nvkm_wr32(device, NV10_PFIFO_CACHE1_SEMAPHORE, sem | 0x1);
{ 32, 0, 0x2c, 0, NV10_PFIFO_CACHE1_SEMAPHORE },
{ 32, 0, 0x30, 0, NV10_PFIFO_CACHE1_SEMAPHORE },