drm/nvc0/bus: report useful data on mmio fault (382b5bbb) · Commits · 戴 / test

drivers/gpu/drm/nouveau/core/subdev/bus/nvc0.c

+10 −5

Original line number	Diff line number	Diff line
		@@ -36,12 +36,17 @@ nvc0_bus_intr(struct nouveau_subdev *subdev)
		u32 stat = nv_rd32(pbus, 0x001100) & nv_rd32(pbus, 0x001140);

		if (stat & 0x0000000e) {
		nv_error(pbus, "MMIO FAULT [");
		if (stat & 0x00000002) pr_cont(" !ENGINE");
		if (stat & 0x00000004) pr_cont(" IBUS");
		if (stat & 0x00000004) pr_cont(" TIMEOUT");
		pr_cont("]\n");
		u32 addr = nv_rd32(pbus, 0x009084);
		u32 data = nv_rd32(pbus, 0x009088);

		nv_error(pbus, "MMIO %s of 0x%08x FAULT at 0x%06x [ %s%s%s]\n",
		(addr & 0x00000002) ? "write" : "read", data,
		(addr & 0x00fffffc),
		(stat & 0x00000002) ? "!ENGINE " : "",
		(stat & 0x00000004) ? "IBUS " : "",
		(stat & 0x00000008) ? "TIMEOUT " : "");

		nv_wr32(pbus, 0x009084, 0x00000000);
		nv_wr32(pbus, 0x001100, (stat & 0x0000000e));
		stat &= ~0x0000000e;
		}