+int
+nouveau_screen_init(struct nouveau_screen *screen, struct nouveau_device *dev)
+{
+ struct pipe_screen *pscreen = &screen->base;
+ struct nv04_fifo nv04_data = { .vram = 0xbeef0201, .gart = 0xbeef0202 };
+ struct nvc0_fifo nvc0_data = { };
+ uint64_t time;
+ int size, ret;
+ void *data;
+ union nouveau_bo_config mm_config;
+
+ char *nv_dbg = getenv("NOUVEAU_MESA_DEBUG");
+ if (nv_dbg)
+ nouveau_mesa_debug = atoi(nv_dbg);
+
+ /* These must be set before any failure is possible, as the cleanup
+ * paths assume they're responsible for deleting them.
+ */
+ screen->drm = nouveau_drm(&dev->object);
+ screen->device = dev;
+
+ /*
+ * this is initialized to 1 in nouveau_drm_screen_create after screen
+ * is fully constructed and added to the global screen list.
+ */
+ screen->refcount = -1;
+
+ if (dev->chipset < 0xc0) {
+ data = &nv04_data;
+ size = sizeof(nv04_data);
+ } else {
+ data = &nvc0_data;
+ size = sizeof(nvc0_data);
+ }
+
+ /*
+ * Set default VRAM domain if not overridden
+ */
+ if (!screen->vram_domain) {
+ if (dev->vram_size > 0)
+ screen->vram_domain = NOUVEAU_BO_VRAM;
+ else
+ screen->vram_domain = NOUVEAU_BO_GART;
+ }
+
+ ret = nouveau_object_new(&dev->object, 0, NOUVEAU_FIFO_CHANNEL_CLASS,
+ data, size, &screen->channel);
+ if (ret)
+ return ret;
+
+ ret = nouveau_client_new(screen->device, &screen->client);
+ if (ret)
+ return ret;
+ ret = nouveau_pushbuf_new(screen->client, screen->channel,
+ 4, 512 * 1024, 1,
+ &screen->pushbuf);
+ if (ret)
+ return ret;
+
+ /* getting CPU time first appears to be more accurate */
+ screen->cpu_gpu_time_delta = os_time_get();
+
+ ret = nouveau_getparam(dev, NOUVEAU_GETPARAM_PTIMER_TIME, &time);
+ if (!ret)
+ screen->cpu_gpu_time_delta = time - screen->cpu_gpu_time_delta * 1000;
+
+ pscreen->get_name = nouveau_screen_get_name;
+ pscreen->get_vendor = nouveau_screen_get_vendor;
+ pscreen->get_device_vendor = nouveau_screen_get_device_vendor;
+ pscreen->get_disk_shader_cache = nouveau_screen_get_disk_shader_cache;
+
+ pscreen->get_timestamp = nouveau_screen_get_timestamp;
+
+ pscreen->fence_reference = nouveau_screen_fence_ref;
+ pscreen->fence_finish = nouveau_screen_fence_finish;
+
+ nouveau_disk_cache_create(screen);
+
+ screen->lowmem_bindings = PIPE_BIND_GLOBAL; /* gallium limit */
+ screen->vidmem_bindings =
+ PIPE_BIND_RENDER_TARGET | PIPE_BIND_DEPTH_STENCIL |
+ PIPE_BIND_DISPLAY_TARGET | PIPE_BIND_SCANOUT |
+ PIPE_BIND_CURSOR |
+ PIPE_BIND_SAMPLER_VIEW |
+ PIPE_BIND_SHADER_BUFFER | PIPE_BIND_SHADER_IMAGE |
+ PIPE_BIND_COMPUTE_RESOURCE |
+ PIPE_BIND_GLOBAL;
+ screen->sysmem_bindings =
+ PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_STREAM_OUTPUT |
+ PIPE_BIND_COMMAND_ARGS_BUFFER;
+
+ memset(&mm_config, 0, sizeof(mm_config));
+
+ screen->mm_GART = nouveau_mm_create(dev,
+ NOUVEAU_BO_GART | NOUVEAU_BO_MAP,
+ &mm_config);
+ screen->mm_VRAM = nouveau_mm_create(dev, NOUVEAU_BO_VRAM, &mm_config);
+ return 0;
+}