1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.h b/drivers/gpu/drm/nouveau/nouveau_bo.h
new file mode 100644
index 000000000..73c48440d
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.h
@@ -0,0 +1,134 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NOUVEAU_BO_H__
+#define __NOUVEAU_BO_H__
+
+#include <drm/drm_gem.h>
+
+struct nouveau_channel;
+struct nouveau_fence;
+struct nvkm_vma;
+
+struct nouveau_bo {
+	struct ttm_buffer_object bo;
+	struct ttm_placement placement;
+	u32 valid_domains;
+	struct ttm_place placements[3];
+	struct ttm_place busy_placements[3];
+	bool force_coherent;
+	struct ttm_bo_kmap_obj kmap;
+	struct list_head head;
+
+	/* protected by ttm_bo_reserve() */
+	struct drm_file *reserved_by;
+	struct list_head entry;
+	int pbbo_index;
+	bool validate_mapped;
+
+	struct list_head vma_list;
+
+	unsigned contig:1;
+	unsigned page:5;
+	unsigned kind:8;
+	unsigned comp:3;
+	unsigned zeta:3;
+	unsigned mode;
+
+	struct nouveau_drm_tile *tile;
+
+	/* Only valid if allocated via nouveau_gem_new() and iff you hold a
+	 * gem reference to it! For debugging, use gem.filp != NULL to test
+	 * whether it is valid. */
+	struct drm_gem_object gem;
+
+	/* protect by the ttm reservation lock */
+	int pin_refcnt;
+
+	struct ttm_bo_kmap_obj dma_buf_vmap;
+};
+
+static inline struct nouveau_bo *
+nouveau_bo(struct ttm_buffer_object *bo)
+{
+	return container_of(bo, struct nouveau_bo, bo);
+}
+
+static inline int
+nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo)
+{
+	struct nouveau_bo *prev;
+
+	if (!pnvbo)
+		return -EINVAL;
+	prev = *pnvbo;
+
+	*pnvbo = ref ? nouveau_bo(ttm_bo_reference(&ref->bo)) : NULL;
+	if (prev) {
+		struct ttm_buffer_object *bo = &prev->bo;
+
+		ttm_bo_unref(&bo);
+	}
+
+	return 0;
+}
+
+extern struct ttm_bo_driver nouveau_bo_driver;
+
+void nouveau_bo_move_init(struct nouveau_drm *);
+int  nouveau_bo_new(struct nouveau_cli *, u64 size, int align, u32 flags,
+		    u32 tile_mode, u32 tile_flags, struct sg_table *sg,
+		    struct reservation_object *robj,
+		    struct nouveau_bo **);
+int  nouveau_bo_pin(struct nouveau_bo *, u32 flags, bool contig);
+int  nouveau_bo_unpin(struct nouveau_bo *);
+int  nouveau_bo_map(struct nouveau_bo *);
+void nouveau_bo_unmap(struct nouveau_bo *);
+void nouveau_bo_placement_set(struct nouveau_bo *, u32 type, u32 busy);
+void nouveau_bo_wr16(struct nouveau_bo *, unsigned index, u16 val);
+u32  nouveau_bo_rd32(struct nouveau_bo *, unsigned index);
+void nouveau_bo_wr32(struct nouveau_bo *, unsigned index, u32 val);
+void nouveau_bo_fence(struct nouveau_bo *, struct nouveau_fence *, bool exclusive);
+int  nouveau_bo_validate(struct nouveau_bo *, bool interruptible,
+			 bool no_wait_gpu);
+void nouveau_bo_sync_for_device(struct nouveau_bo *nvbo);
+void nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo);
+
+/* TODO: submit equivalent to TTM generic API upstream? */
+static inline void __iomem *
+nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo)
+{
+	bool is_iomem;
+	void __iomem *ioptr = (void __force __iomem *)ttm_kmap_obj_virtual(
+						&nvbo->kmap, &is_iomem);
+	WARN_ON_ONCE(ioptr && !is_iomem);
+	return ioptr;
+}
+
+static inline void
+nouveau_bo_unmap_unpin_unref(struct nouveau_bo **pnvbo)
+{
+	if (*pnvbo) {
+		nouveau_bo_unmap(*pnvbo);
+		nouveau_bo_unpin(*pnvbo);
+		nouveau_bo_ref(NULL, pnvbo);
+	}
+}
+
+static inline int
+nouveau_bo_new_pin_map(struct nouveau_cli *cli, u64 size, int align, u32 flags,
+		       struct nouveau_bo **pnvbo)
+{
+	int ret = nouveau_bo_new(cli, size, align, flags,
+				 0, 0, NULL, NULL, pnvbo);
+	if (ret == 0) {
+		ret = nouveau_bo_pin(*pnvbo, flags, true);
+		if (ret == 0) {
+			ret = nouveau_bo_map(*pnvbo);
+			if (ret == 0)
+				return ret;
+			nouveau_bo_unpin(*pnvbo);
+		}
+		nouveau_bo_ref(NULL, pnvbo);
+	}
+	return ret;
+}
+#endif