tee_private.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (c) 2015-2016, Linaro Limited
 4 */
 5#ifndef TEE_PRIVATE_H
 6#define TEE_PRIVATE_H
 7
 8#include <linux/cdev.h>
 9#include <linux/completion.h>
10#include <linux/device.h>
11#include <linux/dma-buf.h>
12#include <linux/kref.h>
13#include <linux/mutex.h>
14#include <linux/types.h>
15
16/* extra references appended to shm object for registered shared memory */
17struct tee_shm_dmabuf_ref {
18	struct tee_shm shm;
19	size_t offset;
20	struct dma_buf *dmabuf;
21	struct tee_shm *parent_shm;
22};
23
24int tee_shm_get_fd(struct tee_shm *shm);
25
26struct tee_shm *tee_shm_alloc_user_buf(struct tee_context *ctx, size_t size);
27struct tee_shm *tee_shm_register_user_buf(struct tee_context *ctx,
28					  unsigned long addr, size_t length);
29
30int tee_heap_update_from_dma_buf(struct tee_device *teedev,
31				 struct dma_buf *dmabuf, size_t *offset,
32				 struct tee_shm *shm,
33				 struct tee_shm **parent_shm);
34
35#endif /*TEE_PRIVATE_H*/