drm/nouveau/top/gv100: initial support

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

drivers/gpu/drm/nouveau/nvkm/engine/device/base.c

@@ -2400,6 +2400,7 @@ nv140_chipset = {
 	.bios = nvkm_bios_new,
 	.devinit = gv100_devinit_new,
 	.pci = gp100_pci_new,
+	.top = gk104_top_new,
 };
 
 static int

drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c

@@ -48,7 +48,8 @@ gk104_top_oneinit(struct nvkm_top *top)
 		case 0x00000001: /* DATA */
 			inst        = (data & 0x3c000000) >> 26;
 			info->addr  = (data & 0x00fff000);
-			info->fault = (data & 0x000000f8) >> 3;
+			if (data & 0x00000004)
+				info->fault = (data & 0x000003f8) >> 3;
 			break;
 		case 0x00000002: /* ENUM */
 			if (data & 0x00000020)