drm/nve0/gr: initial implementation

This may, perhaps, get re-merged with nvc0_graph.c at some point.  It's
still unclear as to how great an idea that'd be.  Stay tuned...

Completely dependent on firmware blobs from NVIDIA binary driver currently.

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

drivers/gpu/drm/nouveau/Makefile

@@ -19,8 +19,8 @@ nouveau-y := nouveau_drv.o nouveau_state.o nouveau_channel.o nouveau_mem.o \
              nv04_fifo.o nv10_fifo.o nv40_fifo.o nv50_fifo.o nvc0_fifo.o \
              nve0_fifo.o \
              nv04_graph.o nv10_graph.o nv20_graph.o \
-             nv40_graph.o nv50_graph.o nvc0_graph.o \
-             nv40_grctx.o nv50_grctx.o nvc0_grctx.o \
+             nv40_graph.o nv50_graph.o nvc0_graph.o nve0_graph.o \
+             nv40_grctx.o nv50_grctx.o nvc0_grctx.o nve0_grctx.o \
              nv84_crypt.o nv98_crypt.o \
              nva3_copy.o nvc0_copy.o \
              nv31_mpeg.o nv50_mpeg.o \

drivers/gpu/drm/nouveau/nouveau_drv.h

@@ -1298,6 +1298,9 @@ extern int  nv50_graph_isr_chid(struct drm_device *dev, u64 inst);
 extern int  nvc0_graph_create(struct drm_device *);
 extern int  nvc0_graph_isr_chid(struct drm_device *dev, u64 inst);
 
+/* nve0_graph.c */
+extern int  nve0_graph_create(struct drm_device *);
+
 /* nv84_crypt.c */
 extern int  nv84_crypt_create(struct drm_device *);
 

drivers/gpu/drm/nouveau/nouveau_state.c

@@ -772,6 +772,9 @@ nouveau_card_init(struct drm_device *dev)
 		case NV_D0:
 			nvc0_graph_create(dev);
 			break;
+		case NV_E0:
+			nve0_graph_create(dev);
+			break;
 		default:
 			break;
 		}
@@ -1227,6 +1230,8 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
 	if (nouveau_noaccel == -1) {
 		switch (dev_priv->chipset) {
 		case 0xd9: /* known broken */
+		case 0xe4: /* needs binary driver firmware */
+		case 0xe7: /* needs binary driver firmware */
 			NV_INFO(dev, "acceleration disabled by default, pass "
 				     "noaccel=0 to force enable\n");
 			dev_priv->noaccel = true;