drm/nouveau: replace nv04_graph_fifo_access() use with direct reg bashing

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_drv.h

@@ -1142,7 +1142,6 @@ extern int  nvc0_fifo_unload_context(struct drm_device *);
 
 /* nv04_graph.c */
 extern int  nv04_graph_create(struct drm_device *);
-extern void nv04_graph_fifo_access(struct drm_device *, bool);
 extern int  nv04_graph_object_new(struct nouveau_channel *, int, u32, u16);
 extern int  nv04_graph_mthd_page_flip(struct nouveau_channel *chan,
 				      u32 class, u32 mthd, u32 data);

drivers/gpu/drm/nouveau/nv04_graph.c

@@ -450,13 +450,13 @@ nv04_graph_context_del(struct nouveau_channel *chan, int engine)
 	unsigned long flags;
 
 	spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
-	nv04_graph_fifo_access(dev, false);
+	nv_mask(dev, NV04_PGRAPH_FIFO, 0x00000001, 0x00000000);
 
 	/* Unload the context if it's the currently active one */
 	if (nv04_graph_channel(dev) == chan)
 		nv04_graph_unload_context(dev);
 
-	nv04_graph_fifo_access(dev, true);
+	nv_mask(dev, NV04_PGRAPH_FIFO, 0x00000001, 0x00000001);
 	spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
 
 	/* Free the context resources */
@@ -545,17 +545,6 @@ nv04_graph_fini(struct drm_device *dev, int engine)
 	return 0;
 }
 
-void
-nv04_graph_fifo_access(struct drm_device *dev, bool enabled)
-{
-	if (enabled)
-		nv_wr32(dev, NV04_PGRAPH_FIFO,
-					nv_rd32(dev, NV04_PGRAPH_FIFO) | 1);
-	else
-		nv_wr32(dev, NV04_PGRAPH_FIFO,
-					nv_rd32(dev, NV04_PGRAPH_FIFO) & ~1);
-}
-
 static int
 nv04_graph_mthd_set_ref(struct nouveau_channel *chan,
 			u32 class, u32 mthd, u32 data)

drivers/gpu/drm/nouveau/nv10_graph.c

@@ -708,8 +708,8 @@ static void nv10_graph_load_dma_vtxbuf(struct nouveau_channel *chan,
 		0x2c000000 | chan->id << 20 | subchan << 16 | 0x18c);
 	nv_wr32(dev, NV10_PGRAPH_FFINTFC_ST2_DL, inst);
 	nv_mask(dev, NV10_PGRAPH_CTX_CONTROL, 0, 0x10000);
-	nv04_graph_fifo_access(dev, true);
-	nv04_graph_fifo_access(dev, false);
+	nv_mask(dev, NV04_PGRAPH_FIFO, 0x00000001, 0x00000001);
+	nv_mask(dev, NV04_PGRAPH_FIFO, 0x00000001, 0x00000000);
 
 	/* Restore the FIFO state */
 	for (i = 0; i < ARRAY_SIZE(fifo); i++)
@@ -879,13 +879,13 @@ nv10_graph_context_del(struct nouveau_channel *chan, int engine)
 	unsigned long flags;
 
 	spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
-	nv04_graph_fifo_access(dev, false);
+	nv_mask(dev, NV04_PGRAPH_FIFO, 0x00000001, 0x00000000);
 
 	/* Unload the context if it's the currently active one */
 	if (nv10_graph_channel(dev) == chan)
 		nv10_graph_unload_context(dev);
 
-	nv04_graph_fifo_access(dev, true);
+	nv_mask(dev, NV04_PGRAPH_FIFO, 0x00000001, 0x00000001);
 	spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
 
 	/* Free the context resources */

drivers/gpu/drm/nouveau/nv20_graph.c

@@ -454,13 +454,13 @@ nv20_graph_context_del(struct nouveau_channel *chan, int engine)
 	unsigned long flags;
 
 	spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
-	nv04_graph_fifo_access(dev, false);
+	nv_mask(dev, NV04_PGRAPH_FIFO, 0x00000001, 0x00000000);
 
 	/* Unload the context if it's the currently active one */
 	if (nv10_graph_channel(dev) == chan)
 		nv20_graph_unload_context(dev);
 
-	nv04_graph_fifo_access(dev, true);
+	nv_mask(dev, NV04_PGRAPH_FIFO, 0x00000001, 0x00000001);
 	spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
 
 	/* Free the context resources */