+ struct drm_device *dev = chan->dev;
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
+ struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
+ struct nvc0_fifo_priv *priv = pfifo->priv;
+ struct nvc0_fifo_chan *fifoch;
+ u64 ib_virt, user_vinst;
+ int ret;
+
+ chan->fifo_priv = kzalloc(sizeof(*fifoch), GFP_KERNEL);
+ if (!chan->fifo_priv)
+ return -ENOMEM;
+ fifoch = chan->fifo_priv;
+
+ /* allocate vram for control regs, map into polling area */
+ ret = nouveau_bo_new(dev, NULL, 0x1000, 0, TTM_PL_FLAG_VRAM,
+ 0, 0, true, true, &fifoch->user);
+ if (ret)
+ goto error;
+
+ ret = nouveau_bo_pin(fifoch->user, TTM_PL_FLAG_VRAM);
+ if (ret) {
+ nouveau_bo_ref(NULL, &fifoch->user);
+ goto error;
+ }
+
+ user_vinst = fifoch->user->bo.mem.start << PAGE_SHIFT;
+
+ ret = nouveau_bo_map(fifoch->user);
+ if (ret) {
+ nouveau_bo_unpin(fifoch->user);
+ nouveau_bo_ref(NULL, &fifoch->user);
+ goto error;
+ }
+
+ nouveau_vm_map_at(&priv->user_vma, chan->id * 0x1000,
+ fifoch->user->bo.mem.mm_node);
+
+ chan->user = ioremap_wc(pci_resource_start(dev->pdev, 1) +
+ priv->user_vma.offset + (chan->id * 0x1000),
+ PAGE_SIZE);
+ if (!chan->user) {
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ ib_virt = chan->pushbuf_base + chan->dma.ib_base * 4;
+
+ /* zero channel regs */
+ nouveau_bo_wr32(fifoch->user, 0x0040/4, 0);
+ nouveau_bo_wr32(fifoch->user, 0x0044/4, 0);
+ nouveau_bo_wr32(fifoch->user, 0x0048/4, 0);
+ nouveau_bo_wr32(fifoch->user, 0x004c/4, 0);
+ nouveau_bo_wr32(fifoch->user, 0x0050/4, 0);
+ nouveau_bo_wr32(fifoch->user, 0x0058/4, 0);
+ nouveau_bo_wr32(fifoch->user, 0x005c/4, 0);
+ nouveau_bo_wr32(fifoch->user, 0x0060/4, 0);
+ nouveau_bo_wr32(fifoch->user, 0x0088/4, 0);
+ nouveau_bo_wr32(fifoch->user, 0x008c/4, 0);
+
+ /* ramfc */
+ ret = nouveau_gpuobj_new_fake(dev, chan->ramin->pinst,
+ chan->ramin->vinst, 0x100,
+ NVOBJ_FLAG_ZERO_ALLOC, &fifoch->ramfc);
+ if (ret)
+ goto error;
+
+ nv_wo32(fifoch->ramfc, 0x08, lower_32_bits(user_vinst));
+ nv_wo32(fifoch->ramfc, 0x0c, upper_32_bits(user_vinst));
+ nv_wo32(fifoch->ramfc, 0x10, 0x0000face);
+ nv_wo32(fifoch->ramfc, 0x30, 0xfffff902);
+ nv_wo32(fifoch->ramfc, 0x48, lower_32_bits(ib_virt));
+ nv_wo32(fifoch->ramfc, 0x4c, drm_order(chan->dma.ib_max + 1) << 16 |
+ upper_32_bits(ib_virt));
+ nv_wo32(fifoch->ramfc, 0x54, 0x00000002);
+ nv_wo32(fifoch->ramfc, 0x84, 0x20400000);
+ nv_wo32(fifoch->ramfc, 0x94, 0x30000001);
+ nv_wo32(fifoch->ramfc, 0x9c, 0x00000100);
+ nv_wo32(fifoch->ramfc, 0xa4, 0x1f1f1f1f);
+ nv_wo32(fifoch->ramfc, 0xa8, 0x1f1f1f1f);
+ nv_wo32(fifoch->ramfc, 0xac, 0x0000001f);
+ nv_wo32(fifoch->ramfc, 0xb8, 0xf8000000);
+ nv_wo32(fifoch->ramfc, 0xf8, 0x10003080); /* 0x002310 */
+ nv_wo32(fifoch->ramfc, 0xfc, 0x10000010); /* 0x002350 */
+ pinstmem->flush(dev);
+
+ nv_wr32(dev, 0x003000 + (chan->id * 8), 0xc0000000 |
+ (chan->ramin->vinst >> 12));
+ nv_wr32(dev, 0x003004 + (chan->id * 8), 0x001f0001);
+ nvc0_fifo_playlist_update(dev);