drm/nouveau/gr/gf100-: virtualise r405a14

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

drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c

@@ -1946,6 +1946,9 @@ gf100_gr_init(struct gf100_gr *gr)
 	else
 		gf100_gr_mmio(gr, gr->func->mmio);
 
+	if (gr->func->init_r405a14)
+		gr->func->init_r405a14(gr);
+
 	nvkm_mask(device, TPC_UNIT(0, 0, 0x05c), 0x00000001, 0x00000001);
 
 	memcpy(tpcnr, gr->tpc_nr, sizeof(gr->tpc_nr));

drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.h

@@ -122,6 +122,7 @@ struct gf100_gr_func {
 	void (*dtor)(struct gf100_gr *);
 	int (*init)(struct gf100_gr *);
 	void (*init_gpc_mmu)(struct gf100_gr *);
+	void (*init_r405a14)(struct gf100_gr *);
 	void (*init_rop_active_fbps)(struct gf100_gr *);
 	void (*init_ppc_exceptions)(struct gf100_gr *);
 	void (*init_swdx_pes_mask)(struct gf100_gr *);

drivers/gpu/drm/nouveau/nvkm/engine/gr/gf108.c

@@ -103,10 +103,17 @@ gf108_gr_pack_mmio[] = {
  * PGRAPH engine/subdev functions
  ******************************************************************************/
 
+static void
+gf108_gr_init_r405a14(struct gf100_gr *gr)
+{
+	nvkm_wr32(gr->base.engine.subdev.device, 0x405a14, 0x80000000);
+}
+
 static const struct gf100_gr_func
 gf108_gr = {
 	.init = gf100_gr_init,
 	.init_gpc_mmu = gf100_gr_init_gpc_mmu,
+	.init_r405a14 = gf108_gr_init_r405a14,
 	.mmio = gf108_gr_pack_mmio,
 	.fecs.ucode = &gf100_gr_fecs_ucode,
 	.gpccs.ucode = &gf100_gr_gpccs_ucode,