[igt-dev] [PATCH i-g-t v2] lib/igt_draw: Change MOCS settings for MTL

[Jeevan B]

On MTL, we want the table entry labelled "UC (GO:Mem)"
which has index 5.  This means that the MOCS value is 10.

v2: Add define for MOCS settings. (Lucas)

Signed-off-by: Jeevan B <jeevan.b at intel.com>
---
 lib/igt_draw.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/lib/igt_draw.c b/lib/igt_draw.c
index 975d65cd..4e19e42a 100644
--- a/lib/igt_draw.c
+++ b/lib/igt_draw.c
@@ -651,13 +651,16 @@ static struct intel_buf *create_buf(int fd, struct buf_ops *bops,
 	return buf;
 }
 
+#define DG2_MOCS_UC_GO_MEM	2	/* MOCS index 0x1 */
+#define MTL_MOCS_UC_GO_MEM	10	/* MOCS index 0x5 */
+
 static void draw_rect_blt(int fd, struct cmd_data *cmd_data,
 			  struct buf_data *buf, struct rect *rect,
 			  uint32_t tiling, uint32_t color)
 {
 	struct intel_bb *ibb;
 	struct intel_buf *dst;
-	int blt_cmd_len, blt_cmd_tiling, blt_cmd_depth;
+	int blt_cmd_len, blt_cmd_tiling, blt_cmd_depth, mocs_val;
 	uint32_t devid = intel_get_drm_devid(fd);
 	int gen = intel_gen(devid);
 	int pitch;
@@ -702,8 +705,11 @@ static void draw_rect_blt(int fd, struct cmd_data *cmd_data,
 		pitch = tiling ? buf->stride / 4 : buf->stride;
 
 		intel_bb_out(ibb, XY_FAST_COLOR_BLT | blt_cmd_depth);
-		/* DG2 MOCS entry 2 is "UC - Non-Coherent; GO:Memory" */
-		intel_bb_out(ibb, blt_cmd_tiling | 2 << 21 | (pitch-1));
+		if (IS_METEORLAKE(intel_get_drm_devid(fd)))
+			mocs_val = MTL_MOCS_UC_GO_MEM;
+		else
+			mocs_val = DG2_MOCS_UC_GO_MEM;
+		intel_bb_out(ibb, blt_cmd_tiling | mocs_val << 21 | (pitch-1));
 		intel_bb_out(ibb, (rect->y << 16) | rect->x);
 		intel_bb_out(ibb, ((rect->y + rect->h) << 16) | (rect->x + rect->w));
 		intel_bb_emit_reloc_fenced(ibb, dst->handle, 0,
-- 
2.36.0