1 files changed, 123 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/display/xe_stolen.c b/drivers/gpu/drm/xe/display/xe_stolen.c
new file mode 100644
index 000000000000..9f04ba36e930
--- /dev/null
+++ b/drivers/gpu/drm/xe/display/xe_stolen.c
@@ -0,0 +1,123 @@
+// SPDX-License-Identifier: MIT
+/* Copyright © 2025 Intel Corporation */
+
+#include "gem/i915_gem_stolen.h"
+#include "xe_res_cursor.h"
+#include "xe_ttm_stolen_mgr.h"
+#include "xe_validation.h"
+
+struct intel_stolen_node {
+	struct xe_device *xe;
+	struct xe_bo *bo;
+};
+
+int i915_gem_stolen_insert_node_in_range(struct intel_stolen_node *node, u64 size,
+					 unsigned int align, u64 start, u64 end)
+{
+	struct xe_device *xe = node->xe;
+
+	struct xe_bo *bo;
+	int err = 0;
+	u32 flags = XE_BO_FLAG_PINNED | XE_BO_FLAG_STOLEN;
+
+	if (start < SZ_4K)
+		start = SZ_4K;
+
+	if (align) {
+		size = ALIGN(size, align);
+		start = ALIGN(start, align);
+	}
+
+	bo = xe_bo_create_pin_range_novm(xe, xe_device_get_root_tile(xe),
+					 size, start, end, ttm_bo_type_kernel, flags);
+	if (IS_ERR(bo)) {
+		err = PTR_ERR(bo);
+		bo = NULL;
+		return err;
+	}
+
+	node->bo = bo;
+
+	return err;
+}
+
+int i915_gem_stolen_insert_node(struct intel_stolen_node *node, u64 size, unsigned int align)
+{
+	/* Not used on xe */
+	WARN_ON(1);
+
+	return -ENODEV;
+}
+
+void i915_gem_stolen_remove_node(struct intel_stolen_node *node)
+{
+	xe_bo_unpin_map_no_vm(node->bo);
+	node->bo = NULL;
+}
+
+bool i915_gem_stolen_initialized(struct drm_device *drm)
+{
+	struct xe_device *xe = to_xe_device(drm);
+
+	return ttm_manager_type(&xe->ttm, XE_PL_STOLEN);
+}
+
+bool i915_gem_stolen_node_allocated(const struct intel_stolen_node *node)
+{
+	return node->bo;
+}
+
+u32 i915_gem_stolen_node_offset(struct intel_stolen_node *node)
+{
+	struct xe_res_cursor res;
+
+	xe_res_first(node->bo->ttm.resource, 0, 4096, &res);
+	return res.start;
+}
+
+/* Used for < gen4. These are not supported by Xe */
+u64 i915_gem_stolen_area_address(struct drm_device *drm)
+{
+	WARN_ON(1);
+
+	return 0;
+}
+
+/* Used for gen9 specific WA. Gen9 is not supported by Xe */
+u64 i915_gem_stolen_area_size(struct drm_device *drm)
+{
+	WARN_ON(1);
+
+	return 0;
+}
+
+u64 i915_gem_stolen_node_address(struct intel_stolen_node *node)
+{
+	struct xe_device *xe = node->xe;
+
+	return xe_ttm_stolen_gpu_offset(xe) + i915_gem_stolen_node_offset(node);
+}
+
+u64 i915_gem_stolen_node_size(const struct intel_stolen_node *node)
+{
+	return node->bo->ttm.base.size;
+}
+
+struct intel_stolen_node *i915_gem_stolen_node_alloc(struct drm_device *drm)
+{
+	struct xe_device *xe = to_xe_device(drm);
+	struct intel_stolen_node *node;
+
+	node = kzalloc(sizeof(*node), GFP_KERNEL);
+	if (!node)
+		return NULL;
+
+	node->xe = xe;
+
+	return node;
+}
+
+void i915_gem_stolen_node_free(const struct intel_stolen_node *node)
+{
+	kfree(node);
+}