1 files changed, 99 insertions, 0 deletions
diff --git a/drivers/gpu/drm/loongson/lsdc_ttm.h b/drivers/gpu/drm/loongson/lsdc_ttm.h
new file mode 100644
index 000000000000..843e1475064e
--- /dev/null
+++ b/drivers/gpu/drm/loongson/lsdc_ttm.h
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2023 Loongson Technology Corporation Limited
+ */
+
+#ifndef __LSDC_TTM_H__
+#define __LSDC_TTM_H__
+
+#include <linux/container_of.h>
+#include <linux/iosys-map.h>
+#include <linux/list.h>
+
+#include <drm/drm_gem.h>
+#include <drm/ttm/ttm_bo.h>
+#include <drm/ttm/ttm_placement.h>
+#include <drm/ttm/ttm_range_manager.h>
+#include <drm/ttm/ttm_tt.h>
+
+#define LSDC_GEM_DOMAIN_SYSTEM          0x1
+#define LSDC_GEM_DOMAIN_GTT             0x2
+#define LSDC_GEM_DOMAIN_VRAM            0x4
+
+struct lsdc_bo {
+	struct ttm_buffer_object tbo;
+
+	/* Protected by gem.mutex */
+	struct list_head list;
+
+	struct iosys_map map;
+
+	unsigned int vmap_count;
+	/* cross device driver sharing reference count */
+	unsigned int sharing_count;
+
+	struct ttm_bo_kmap_obj kmap;
+	void *kptr;
+	bool is_iomem;
+
+	size_t size;
+
+	u32 initial_domain;
+
+	struct ttm_placement placement;
+	struct ttm_place placements[4];
+};
+
+static inline struct ttm_buffer_object *to_ttm_bo(struct drm_gem_object *gem)
+{
+	return container_of(gem, struct ttm_buffer_object, base);
+}
+
+static inline struct lsdc_bo *to_lsdc_bo(struct ttm_buffer_object *tbo)
+{
+	return container_of(tbo, struct lsdc_bo, tbo);
+}
+
+static inline struct lsdc_bo *gem_to_lsdc_bo(struct drm_gem_object *gem)
+{
+	return container_of(gem, struct lsdc_bo, tbo.base);
+}
+
+const char *lsdc_mem_type_to_str(uint32_t mem_type);
+const char *lsdc_domain_to_str(u32 domain);
+
+struct lsdc_bo *lsdc_bo_create(struct drm_device *ddev,
+			       u32 domain,
+			       size_t size,
+			       bool kernel,
+			       struct sg_table *sg,
+			       struct dma_resv *resv);
+
+struct lsdc_bo *lsdc_bo_create_kernel_pinned(struct drm_device *ddev,
+					     u32 domain,
+					     size_t size);
+
+void lsdc_bo_free_kernel_pinned(struct lsdc_bo *lbo);
+
+int lsdc_bo_reserve(struct lsdc_bo *lbo);
+void lsdc_bo_unreserve(struct lsdc_bo *lbo);
+
+int lsdc_bo_pin(struct lsdc_bo *lbo, u32 domain, u64 *gpu_addr);
+void lsdc_bo_unpin(struct lsdc_bo *lbo);
+
+void lsdc_bo_ref(struct lsdc_bo *lbo);
+void lsdc_bo_unref(struct lsdc_bo *lbo);
+
+u64 lsdc_bo_gpu_offset(struct lsdc_bo *lbo);
+size_t lsdc_bo_size(struct lsdc_bo *lbo);
+
+int lsdc_bo_kmap(struct lsdc_bo *lbo);
+void lsdc_bo_kunmap(struct lsdc_bo *lbo);
+void lsdc_bo_clear(struct lsdc_bo *lbo);
+
+int lsdc_bo_evict_vram(struct drm_device *ddev);
+
+int lsdc_ttm_init(struct lsdc_device *ldev);
+void lsdc_ttm_debugfs_init(struct lsdc_device *ldev);
+
+#endif