[PATCH 2/5] drm/i915/mtl: pass the GSC CS info to the GuC

[Daniele Ceraolo Spurio]

We need to tell the GuC that the GSC CS is there. The GuC interface
swaps COMPUTE and OTHER class, so we also need to handle that.

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Cc: Matt Roper <matthew.d.roper at intel.com>
---
 drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c  | 11 +++++------
 drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h |  7 +++++--
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
index 34ef4f36e660..63e3d98788bd 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
@@ -478,6 +478,11 @@ static void fill_engine_enable_masks(struct intel_gt *gt,
 	info_map_write(info_map, engine_enabled_masks[GUC_BLITTER_CLASS], BCS_MASK(gt));
 	info_map_write(info_map, engine_enabled_masks[GUC_VIDEO_CLASS], VDBOX_MASK(gt));
 	info_map_write(info_map, engine_enabled_masks[GUC_VIDEOENHANCE_CLASS], VEBOX_MASK(gt));
+
+	/* The GSC engine is an instance (6) of OTHER_CLASS */
+	if (gt->engine[GSC0])
+		info_map_write(info_map, engine_enabled_masks[GUC_GSC_OTHER_CLASS],
+			       BIT(gt->engine[GSC0]->instance));
 }
 
 #define LR_HW_CONTEXT_SIZE (80 * sizeof(u32))
@@ -519,9 +524,6 @@ static int guc_prep_golden_context(struct intel_guc *guc)
 	}
 
 	for (engine_class = 0; engine_class <= MAX_ENGINE_CLASS; ++engine_class) {
-		if (engine_class == OTHER_CLASS)
-			continue;
-
 		guc_class = engine_class_to_guc_class(engine_class);
 
 		if (!info_map_read(&info_map, engine_enabled_masks[guc_class]))
@@ -599,9 +601,6 @@ static void guc_init_golden_context(struct intel_guc *guc)
 	addr_ggtt = intel_guc_ggtt_offset(guc, guc->ads_vma) + offset;
 
 	for (engine_class = 0; engine_class <= MAX_ENGINE_CLASS; ++engine_class) {
-		if (engine_class == OTHER_CLASS)
-			continue;
-
 		guc_class = engine_class_to_guc_class(engine_class);
 		if (!ads_blob_read(guc, system_info.engine_enabled_masks[guc_class]))
 			continue;
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
index 968ebd79dce7..4ae5fc2f6002 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
@@ -47,7 +47,8 @@
 #define GUC_VIDEOENHANCE_CLASS		2
 #define GUC_BLITTER_CLASS		3
 #define GUC_COMPUTE_CLASS		4
-#define GUC_LAST_ENGINE_CLASS		GUC_COMPUTE_CLASS
+#define GUC_GSC_OTHER_CLASS		5
+#define GUC_LAST_ENGINE_CLASS		GUC_GSC_OTHER_CLASS
 #define GUC_MAX_ENGINE_CLASSES		16
 #define GUC_MAX_INSTANCES_PER_CLASS	32
 
@@ -169,6 +170,7 @@ static u8 engine_class_guc_class_map[] = {
 	[COPY_ENGINE_CLASS]       = GUC_BLITTER_CLASS,
 	[VIDEO_DECODE_CLASS]      = GUC_VIDEO_CLASS,
 	[VIDEO_ENHANCEMENT_CLASS] = GUC_VIDEOENHANCE_CLASS,
+	[OTHER_CLASS]             = GUC_GSC_OTHER_CLASS,
 	[COMPUTE_CLASS]           = GUC_COMPUTE_CLASS,
 };
 
@@ -178,12 +180,13 @@ static u8 guc_class_engine_class_map[] = {
 	[GUC_VIDEO_CLASS]        = VIDEO_DECODE_CLASS,
 	[GUC_VIDEOENHANCE_CLASS] = VIDEO_ENHANCEMENT_CLASS,
 	[GUC_COMPUTE_CLASS]      = COMPUTE_CLASS,
+	[GUC_GSC_OTHER_CLASS]    = OTHER_CLASS,
 };
 
 static inline u8 engine_class_to_guc_class(u8 class)
 {
 	BUILD_BUG_ON(ARRAY_SIZE(engine_class_guc_class_map) != MAX_ENGINE_CLASS + 1);
-	GEM_BUG_ON(class > MAX_ENGINE_CLASS || class == OTHER_CLASS);
+	GEM_BUG_ON(class > MAX_ENGINE_CLASS);
 
 	return engine_class_guc_class_map[class];
 }
-- 
2.37.3