+static void init_guc_policies(struct guc_policies *policies)
+{
+ struct guc_policy *policy;
+ u32 p, i;
+
+ policies->dpc_promote_time = 500000;
+ policies->max_num_work_items = POLICY_MAX_NUM_WI;
+
+ for (p = 0; p < GUC_CTX_PRIORITY_NUM; p++) {
+ for (i = GUC_RENDER_ENGINE; i < GUC_MAX_ENGINES_NUM; i++) {
+ policy = &policies->policy[p][i];
+
+ policy->execution_quantum = 1000000;
+ policy->preemption_time = 500000;
+ policy->fault_time = 250000;
+ policy->policy_flags = 0;
+ }
+ }
+
+ policies->is_valid = 1;
+}
+
+static void guc_create_ads(struct intel_guc *guc)
+{
+ struct drm_i915_private *dev_priv = guc_to_i915(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) +
+ sizeof(struct guc_mmio_reg_state) +
+ GUC_S3_SAVE_SPACE_PAGES * PAGE_SIZE;
+
+ obj = guc->ads_obj;
+ if (!obj) {
+ obj = gem_allocate_guc_obj(dev_priv->dev, PAGE_ALIGN(size));
+ if (!obj)
+ return;
+
+ guc->ads_obj = obj;
+ }
+
+ page = i915_gem_object_get_page(obj, 0);
+ ads = kmap(page);
+
+ /*
+ * The GuC requires a "Golden Context" when it reinitialises
+ * engines after a reset. Here we use the Render ring default
+ * context, which must already exist and be pinned in the GGTT,
+ * so its address won't change after we've told the GuC where
+ * to find it.
+ */
+ ring = &dev_priv->ring[RCS];
+ ads->golden_context_lrca = ring->status_page.gfx_addr;
+
+ for_each_ring(ring, dev_priv, i)
+ ads->eng_state_size[ring->guc_id] = intel_lr_context_size(ring);
+
+ /* GuC scheduling policies */
+ policies = (void *)ads + sizeof(struct guc_ads);
+ init_guc_policies(policies);
+
+ 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_each_ring(ring, dev_priv, i) {
+ reg_state->mmio_white_list[ring->guc_id].mmio_start =
+ ring->mmio_base + GUC_MMIO_WHITE_LIST_START;
+
+ /* Nothing to be saved or restored for now. */
+ reg_state->mmio_white_list[ring->guc_id].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);
+}
+