1 files changed, 73 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/dmabuf.h b/drivers/gpu/nvgpu/common/linux/dmabuf.h
new file mode 100644
index 00000000..718386c5
--- /dev/null
+++ b/drivers/gpu/nvgpu/common/linux/dmabuf.h
@@ -0,0 +1,73 @@
+/*
+* Copyright (c) 2017, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __COMMON_LINUX_DMABUF_H__
+#define __COMMON_LINUX_DMABUF_H__
+
+#include <nvgpu/comptags.h>
+#include <nvgpu/list.h>
+#include <nvgpu/lock.h>
+#include <nvgpu/gmmu.h>
+
+struct sg_table;
+struct dma_buf;
+struct dma_buf_attachment;
+struct device;
+
+struct gk20a;
+struct gk20a_buffer_state;
+
+struct gk20a_dmabuf_priv {
+        struct nvgpu_mutex lock;
+
+        struct gk20a *g;
+
+        struct gk20a_comptag_allocator *comptag_allocator;
+        struct gk20a_comptags comptags;
+
+        struct dma_buf_attachment *attach;
+        struct sg_table *sgt;
+
+        int pin_count;
+
+        struct nvgpu_list_node states;
+
+        u64 buffer_id;
+};
+
+/*
+ * These are implemented in common/linux/comptags.c - these are dmabuf related
+ * functions though so they are defined here. They cannot be defined in
+ * <nvgpu/comptags.h> since that file must be OS agnostic.
+ */
+int gk20a_alloc_comptags(struct gk20a *g,
+                         struct device *dev,
+                         struct dma_buf *dmabuf,
+                         struct gk20a_comptag_allocator *allocator,
+                         u32 lines);
+void gk20a_get_comptags(struct device *dev, struct dma_buf *dmabuf,
+                        struct gk20a_comptags *comptags);
+
+struct sg_table *gk20a_mm_pin(struct device *dev, struct dma_buf *dmabuf);
+void gk20a_mm_unpin(struct device *dev, struct dma_buf *dmabuf,
+                    struct sg_table *sgt);
+
+int gk20a_dmabuf_alloc_drvdata(struct dma_buf *dmabuf, struct device *dev);
+
+int gk20a_dmabuf_get_state(struct dma_buf *dmabuf, struct gk20a *g,
+                           u64 offset, struct gk20a_buffer_state **state);
+
+#endif