NV10_PGRAPH_CTX_SWITCH
nvkm_wr32(device, NV10_PGRAPH_CTX_SWITCH(0), 0x00000000);
nvkm_wr32(device, NV10_PGRAPH_CTX_SWITCH(1), 0x00000000);
nvkm_wr32(device, NV10_PGRAPH_CTX_SWITCH(2), 0x00000000);
nvkm_wr32(device, NV10_PGRAPH_CTX_SWITCH(3), 0x00000000);
nvkm_wr32(device, NV10_PGRAPH_CTX_SWITCH(4), 0x00000000);
NV10_PGRAPH_CTX_SWITCH(0),
NV10_PGRAPH_CTX_SWITCH(1),
NV10_PGRAPH_CTX_SWITCH(2),
NV10_PGRAPH_CTX_SWITCH(3),
NV10_PGRAPH_CTX_SWITCH(4),
ctx_switch[i] = nvkm_rd32(device, NV10_PGRAPH_CTX_SWITCH(i));
nvkm_wr32(device, NV10_PGRAPH_CTX_SWITCH(i),
nvkm_wr32(device, NV10_PGRAPH_CTX_SWITCH(i), ctx_switch[i]);