1 files changed, 65 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/compat-i915-headers/gem/i915_gem_object.h b/drivers/gpu/drm/xe/compat-i915-headers/gem/i915_gem_object.h
new file mode 100644
index 000000000000..5f19550cc845
--- /dev/null
+++ b/drivers/gpu/drm/xe/compat-i915-headers/gem/i915_gem_object.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef _I915_GEM_OBJECT_H_
+#define _I915_GEM_OBJECT_H_
+
+#include <linux/types.h>
+
+#include "xe_bo.h"
+
+#define i915_gem_object_is_shmem(obj) ((obj)->flags & XE_BO_CREATE_SYSTEM_BIT)
+
+static inline dma_addr_t i915_gem_object_get_dma_address(const struct xe_bo *bo, pgoff_t n)
+{
+	/* Should never be called */
+	WARN_ON(1);
+	return n;
+}
+
+static inline bool i915_gem_object_is_tiled(const struct xe_bo *bo)
+{
+	/* legacy tiling is unused */
+	return false;
+}
+
+static inline bool i915_gem_object_is_userptr(const struct xe_bo *bo)
+{
+	/* legacy tiling is unused */
+	return false;
+}
+
+static inline int i915_gem_object_read_from_page(struct xe_bo *bo,
+					  u32 ofs, u64 *ptr, u32 size)
+{
+	struct ttm_bo_kmap_obj map;
+	void *virtual;
+	bool is_iomem;
+	int ret;
+
+	XE_WARN_ON(size != 8);
+
+	ret = xe_bo_lock(bo, true);
+	if (ret)
+		return ret;
+
+	ret = ttm_bo_kmap(&bo->ttm, ofs >> PAGE_SHIFT, 1, &map);
+	if (ret)
+		goto out_unlock;
+
+	ofs &= ~PAGE_MASK;
+	virtual = ttm_kmap_obj_virtual(&map, &is_iomem);
+	if (is_iomem)
+		*ptr = readq((void __iomem *)(virtual + ofs));
+	else
+		*ptr = *(u64 *)(virtual + ofs);
+
+	ttm_bo_kunmap(&map);
+out_unlock:
+	xe_bo_unlock(bo);
+	return ret;
+}
+
+#endif