[Intel-gfx] [PATCH] drm/i915/tgl: MOCS table fixes

[Matt Roper]

The bspec was just updated with a couple corrections to the TGL MOCS
table.  Entries 16 and 17 are marked as reserved (overriding the value
we inherit from GEN11_MOCS_ENTRIES) and entry 61 shouldn't have the
LE_SCF bit applied.

Note that since we're intentionally/explicitly overriding table entries
from GEN11_MOCS_ENTRIES we should suppress the 'override-init' compiler
warnings for this file.

Bspec: 45101
Fixes: 2ddf992179c4 ("drm/i915/tgl: Define MOCS entries for Tigerlake")
Cc: Tomasz Lis <tomasz.lis at intel.com>
Cc: Lucas De Marchi <lucas.demarchi at intel.com>
Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
---
 drivers/gpu/drm/i915/Makefile        | 1 +
 drivers/gpu/drm/i915/gt/intel_mocs.c | 6 +++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index e0fd10c0cfb8..8c6b5fa43473 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -27,6 +27,7 @@ subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
 # Fine grained warnings disable
 CFLAGS_i915_pci.o = $(call cc-disable-warning, override-init)
 CFLAGS_display/intel_fbdev.o = $(call cc-disable-warning, override-init)
+CFLAGS_gt/intel_mocs.o = $(call cc-disable-warning, override-init)
 
 subdir-ccflags-y += \
 	$(call as-instr,movntdqa (%eax)$(comma)%xmm0,-DCONFIG_AS_MOVNTDQA)
diff --git a/drivers/gpu/drm/i915/gt/intel_mocs.c b/drivers/gpu/drm/i915/gt/intel_mocs.c
index 6e881c735b20..cd72235553aa 100644
--- a/drivers/gpu/drm/i915/gt/intel_mocs.c
+++ b/drivers/gpu/drm/i915/gt/intel_mocs.c
@@ -249,6 +249,10 @@ static const struct drm_i915_mocs_entry tigerlake_mocs_table[] = {
 
 	GEN11_MOCS_ENTRIES,
 
+	/* Reserved (overrides values from GEN11_MOCS_ENTRIES) */
+	MOCS_ENTRY(16, 0x0, 0x0),
+	MOCS_ENTRY(17, 0x0, 0x0),
+
 	/* Implicitly enable L1 - HDC:L1 + L3 + LLC */
 	MOCS_ENTRY(48,
 		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
@@ -271,7 +275,7 @@ static const struct drm_i915_mocs_entry tigerlake_mocs_table[] = {
 		   L3_1_UC),
 	/* HW Special Case (Displayable) */
 	MOCS_ENTRY(61,
-		   LE_1_UC | LE_TC_1_LLC | LE_SCF(1),
+		   LE_1_UC | LE_TC_1_LLC,
 		   L3_3_WB),
 };
 
-- 
2.21.0