- /* compatibility with userspace that assumes 506e for all chipsets */
- if (init->class == 0x506e) {
- init->class = nouveau_abi16_swclass(drm);
- if (init->class == 0x906e)
- return nouveau_abi16_put(abi16, 0);
+ chan = nouveau_abi16_chan(abi16, init->channel);
+ if (!chan)
+ return nouveau_abi16_put(abi16, -ENOENT);
+
+ ret = nvif_object_sclass_get(&chan->chan->user, &sclass);
+ if (ret < 0)
+ return nouveau_abi16_put(abi16, ret);
+
+ if ((init->class & 0x00ff) == 0x006e) {
+ /* nvsw: compatibility with older 0x*6e class identifier */
+ for (i = 0; !oclass && i < ret; i++) {
+ switch (sclass[i].oclass) {
+ case NVIF_IOCTL_NEW_V0_SW_NV04:
+ case NVIF_IOCTL_NEW_V0_SW_NV10:
+ case NVIF_IOCTL_NEW_V0_SW_NV50:
+ case NVIF_IOCTL_NEW_V0_SW_GF100:
+ oclass = sclass[i].oclass;
+ break;
+ default:
+ break;
+ }
+ }
+ } else
+ if ((init->class & 0x00ff) == 0x00b1) {
+ /* msvld: compatibility with incorrect version exposure */
+ for (i = 0; i < ret; i++) {
+ if ((sclass[i].oclass & 0x00ff) == 0x00b1) {
+ oclass = sclass[i].oclass;
+ break;
+ }
+ }
+ } else
+ if ((init->class & 0x00ff) == 0x00b2) { /* mspdec */
+ /* mspdec: compatibility with incorrect version exposure */
+ for (i = 0; i < ret; i++) {
+ if ((sclass[i].oclass & 0x00ff) == 0x00b2) {
+ oclass = sclass[i].oclass;
+ break;
+ }
+ }
+ } else
+ if ((init->class & 0x00ff) == 0x00b3) { /* msppp */
+ /* msppp: compatibility with incorrect version exposure */
+ for (i = 0; i < ret; i++) {
+ if ((sclass[i].oclass & 0x00ff) == 0x00b3) {
+ oclass = sclass[i].oclass;
+ break;
+ }
+ }
+ } else {
+ oclass = init->class;