drm/nouveau/gr/gf100-: note missing 418800 modifications

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

drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.c

@@ -1426,6 +1426,8 @@ gf100_grctx_generate_main(struct gf100_gr *gr, struct gf100_grctx *info)
 
 	if (grctx->r419cb8)
 		grctx->r419cb8(gr);
+	if (grctx->r418800)
+		grctx->r418800(gr);
 }
 
 #define CB_RESERVED 0x80000

drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgf100.h

@@ -65,6 +65,7 @@ struct gf100_grctx_func {
 	void (*smid_config)(struct gf100_gr *);
 	/* misc other things */
 	void (*r419cb8)(struct gf100_gr *);
+	void (*r418800)(struct gf100_gr *);
 };
 
 extern const struct gf100_grctx_func gf100_grctx;
@@ -107,6 +108,7 @@ void gk104_grctx_generate_bundle(struct gf100_grctx *);
 void gk104_grctx_generate_pagepool(struct gf100_grctx *);
 void gk104_grctx_generate_patch_ltc(struct gf100_grctx *);
 void gk104_grctx_generate_unkn(struct gf100_gr *);
+void gk104_grctx_generate_r418800(struct gf100_gr *);
 
 extern const struct gf100_grctx_func gk110_grctx;
 extern const struct gf100_grctx_func gk110b_grctx;

drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgk104.c

@@ -840,6 +840,21 @@ gk104_grctx_pack_ppc[] = {
  * PGRAPH context implementation
  ******************************************************************************/
 
+void
+gk104_grctx_generate_r418800(struct gf100_gr *gr)
+{
+	struct nvkm_device *device = gr->base.engine.subdev.device;
+	/*XXX: Not real sure where to apply these, there doesn't seem
+	 *     to be any pattern to which chipsets it's done on.
+	 *
+	 *     Perhaps a VBIOS tweak?
+	 */
+	if (0) {
+		nvkm_mask(device, 0x418800, 0x00200000, 0x00200000);
+		nvkm_mask(device, 0x41be10, 0x00800000, 0x00800000);
+	}
+}
+
 void
 gk104_grctx_generate_patch_ltc(struct gf100_grctx *info)
 {
@@ -935,8 +950,7 @@ gk104_grctx_generate_main(struct gf100_gr *gr, struct gf100_grctx *info)
 	gf100_gr_mthd(gr, grctx->mthd);
 	nvkm_mc_unk260(device, 1);
 
-	nvkm_mask(device, 0x418800, 0x00200000, 0x00200000);
-	nvkm_mask(device, 0x41be10, 0x00800000, 0x00800000);
+	grctx->r418800(gr);
 }
 
 void
@@ -1016,4 +1030,5 @@ gk104_grctx = {
 	.dist_skip_table = gf117_grctx_generate_dist_skip_table,
 	.gpc_tpc_nr = gk104_grctx_generate_gpc_tpc_nr,
 	.r419f78 = gk104_grctx_generate_r419f78,
+	.r418800 = gk104_grctx_generate_r418800,
 };

drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgk110.c

@@ -837,4 +837,5 @@ gk110_grctx = {
 	.alpha_beta_tables = gk104_grctx_generate_alpha_beta_tables,
 	.dist_skip_table = gf117_grctx_generate_dist_skip_table,
 	.gpc_tpc_nr = gk104_grctx_generate_gpc_tpc_nr,
+	.r418800 = gk104_grctx_generate_r418800,
 };

drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgk110b.c

@@ -98,4 +98,5 @@ gk110b_grctx = {
 	.alpha_beta_tables = gk104_grctx_generate_alpha_beta_tables,
 	.dist_skip_table = gf117_grctx_generate_dist_skip_table,
 	.gpc_tpc_nr = gk104_grctx_generate_gpc_tpc_nr,
+	.r418800 = gk104_grctx_generate_r418800,
 };

drivers/gpu/drm/nouveau/nvkm/engine/gr/ctxgk208.c

@@ -559,4 +559,5 @@ gk208_grctx = {
 	.alpha_beta_tables = gk104_grctx_generate_alpha_beta_tables,
 	.dist_skip_table = gf117_grctx_generate_dist_skip_table,
 	.gpc_tpc_nr = gk104_grctx_generate_gpc_tpc_nr,
+	.r418800 = gk104_grctx_generate_r418800,
 };