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Commit 1f1ac3bf authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/gk104/gr: therm magic needed on some kepler boards 



Not needed everywhere, and potentially not safe to do depending on how
the rest of PTHERM is configured...

Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 6f1e9b99

drivers/gpu/drm/nouveau/core/engine/graph/nve4.c

+24 −1
Original line number Diff line number Diff line
@@ -189,6 +189,29 @@ nve4_graph_pack_mmio[] = { 
 * PGRAPH engine/subdev functions

 ******************************************************************************/



static int

nve4_graph_fini(struct nouveau_object *object, bool suspend)

{

	struct nvc0_graph_priv *priv = (void *)object;



	/*XXX: this is a nasty hack to power on gr on certain boards

	 *     where it's disabled by therm, somehow.  ideally it'd

	 *     be nice to know when we should be doing this, and why,

	 *     but, it's yet to be determined.  for now we test for

	 *     the particular mmio error that occurs in the situation,

	 *     and then bash therm in the way nvidia do.

	 */

	nv_mask(priv, 0x000200, 0x08001000, 0x08001000);

	nv_rd32(priv, 0x000200);

	if (nv_rd32(priv, 0x400700) == 0xbadf1000) {

		nv_mask(priv, 0x000200, 0x08001000, 0x00000000);

		nv_rd32(priv, 0x000200);

		nv_mask(priv, 0x020004, 0xc0000000, 0x40000000);

	}



	return nouveau_graph_fini(&priv->base, suspend);

}



int

nve4_graph_init(struct nouveau_object *object)

{
@@ -327,7 +350,7 @@ nve4_graph_oclass = &(struct nvc0_graph_oclass) { 
		.ctor = nvc0_graph_ctor,

		.dtor = nvc0_graph_dtor,

		.init = nve4_graph_init,

		.fini = _nouveau_graph_fini,

		.fini = nve4_graph_fini,

	},

	.cclass = &nve4_grctx_oclass,

	.sclass = nve4_graph_sclass,