intel/isl: Allow creating MCS in Tile4 memory

This enables MCS support on XeHP, now that MCS can be created with a
tiling supported by that platform.
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <mesa/mesa!14464>

src/intel/isl/isl.c

@@ -828,8 +828,6 @@ isl_choose_image_alignment_el(const struct isl_device *dev,
 {
    const struct isl_format_layout *fmtl = isl_format_get_layout(info->format);
    if (fmtl->txc == ISL_TXC_MCS) {
-      assert(tiling == ISL_TILING_Y0);
-
       /*
        * IvyBrigde PRM Vol 2, Part 1, "11.7 MCS Buffer for Render Target(s)":
        *
@@ -2084,7 +2082,7 @@ isl_surf_get_mcs_surf(const struct isl_device *dev,
                         .array_len = surf->logical_level0_px.array_len,
                         .samples = 1, /* MCS surfaces are really single-sampled */
                         .usage = ISL_SURF_USAGE_MCS_BIT,
-                        .tiling_flags = ISL_TILING_Y0_BIT);
+                        .tiling_flags = ISL_TILING_ANY_MASK);
 }
 
 bool
@@ -2147,7 +2145,6 @@ isl_surf_supports_ccs(const struct isl_device *dev,
             return false;
 
          assert(mcs_surf->usage & ISL_SURF_USAGE_MCS_BIT);
-         assert(isl_tiling_is_any_y(mcs_surf->tiling));
          assert(isl_format_is_mcs(mcs_surf->format));
       } else {
          /* Single-sampled color can't have MCS or HiZ */

src/intel/isl/isl_gfx12.c

@@ -54,6 +54,13 @@ isl_gfx125_filter_tiling(const struct isl_device *dev,
    if (info->usage & ISL_SURF_USAGE_DISPLAY_BIT)
       *flags &= ~ISL_TILING_64_BIT;
 
+   /* From RENDER_SURFACE_STATE::AuxiliarySurfaceMode,
+    *
+    *    MCS tiling format is always Tile4
+    */
+   if (info->usage & ISL_SURF_USAGE_MCS_BIT)
+      *flags &= ISL_TILING_4_BIT;
+
    /* From RENDER_SURFACE_STATE::TileMode,
     *
     *    TILEMODE_XMAJOR is only allowed if Surface Type is SURFTYPE_2D.