Commit 382b5bbb authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nvc0/bus: report useful data on mmio fault 



Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent a10220bb

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;

	}