2 files changed, 58 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 1eb8db8d1feb..9c244247c13e 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -867,12 +867,15 @@ static void guc_create_ads(struct intel_guc *guc)
 	struct drm_i915_gem_object *obj;
 	struct guc_ads *ads;
 	struct guc_policies *policies;
+	struct guc_mmio_reg_state *reg_state;
 	struct intel_engine_cs *ring;
 	struct page *page;
 	u32 size, i;
 
 	/* The ads obj includes the struct itself and buffers passed to GuC */
-	size = sizeof(struct guc_ads) + sizeof(struct guc_policies);
+	size = sizeof(struct guc_ads) + sizeof(struct guc_policies) +
+			sizeof(struct guc_mmio_reg_state) +
+			GUC_S3_SAVE_SPACE_PAGES * PAGE_SIZE;
 
 	obj = guc->ads_obj;
 	if (!obj) {
@@ -906,6 +909,23 @@ static void guc_create_ads(struct intel_guc *guc)
 	ads->scheduler_policies = i915_gem_obj_ggtt_offset(obj) +
 			sizeof(struct guc_ads);
 
+	/* MMIO reg state */
+	reg_state = (void *)policies + sizeof(struct guc_policies);
+
+	for (i = 0; i < I915_NUM_RINGS; i++) {
+		reg_state->mmio_white_list[i].mmio_start =
+			dev_priv->ring[i].mmio_base + GUC_MMIO_WHITE_LIST_START;
+
+		/* Nothing to be saved or restored for now. */
+		reg_state->mmio_white_list[i].count = 0;
+	}
+
+	ads->reg_state_addr = ads->scheduler_policies +
+			sizeof(struct guc_policies);
+
+	ads->reg_state_buffer = ads->reg_state_addr +
+			sizeof(struct guc_mmio_reg_state);
+
 	kunmap(page);
 }
 
diff --git a/drivers/gpu/drm/i915/intel_guc_fwif.h b/drivers/gpu/drm/i915/intel_guc_fwif.h
index 1ce5f5ba3147..b4632f0bf7b2 100644
--- a/drivers/gpu/drm/i915/intel_guc_fwif.h
+++ b/drivers/gpu/drm/i915/intel_guc_fwif.h
@@ -361,6 +361,43 @@ struct guc_policies {
 	u32 reserved[19];
 } __packed;
 
+/* GuC MMIO reg state struct */
+
+#define GUC_REGSET_FLAGS_NONE		0x0
+#define GUC_REGSET_POWERCYCLE		0x1
+#define GUC_REGSET_MASKED		0x2
+#define GUC_REGSET_ENGINERESET		0x4
+#define GUC_REGSET_SAVE_DEFAULT_VALUE	0x8
+#define GUC_REGSET_SAVE_CURRENT_VALUE	0x10
+
+#define GUC_REGSET_MAX_REGISTERS	20
+#define GUC_MMIO_WHITE_LIST_START	0x24d0
+#define GUC_MMIO_WHITE_LIST_MAX		12
+#define GUC_S3_SAVE_SPACE_PAGES		10
+
+struct guc_mmio_regset {
+	struct __packed {
+		u32 offset;
+		u32 value;
+		u32 flags;
+	} registers[GUC_REGSET_MAX_REGISTERS];
+
+	u32 values_valid;
+	u32 number_of_registers;
+} __packed;
+
+struct guc_mmio_reg_state {
+	struct guc_mmio_regset global_reg;
+	struct guc_mmio_regset engine_reg[I915_NUM_RINGS];
+
+	/* MMIO registers that are set as non privileged */
+	struct __packed {
+		u32 mmio_start;
+		u32 offsets[GUC_MMIO_WHITE_LIST_MAX];
+		u32 count;
+	} mmio_white_list[I915_NUM_RINGS];
+} __packed;
+
 /* GuC Additional Data Struct */
 
 struct guc_ads {