/* SPDX-License-Identifier: GPL-2.0 */
|
/*
|
* Copyright (C) Rockchip Electronics Co.Ltd
|
* Author: Felix Zeng <felix.zeng@rock-chips.com>
|
*/
|
|
#ifndef __LINUX_RKNPU_MEM_H
|
#define __LINUX_RKNPU_MEM_H
|
|
#include <linux/mm_types.h>
|
#include <linux/version.h>
|
|
/*
|
* rknpu DMA buffer structure.
|
*
|
* @flags: indicate memory type to allocated buffer and cache attribute.
|
* @size: size requested from user, in bytes and this size is aligned
|
* in page unit.
|
* @kv_addr: kernel virtual address to allocated memory region.
|
* @dma_addr: bus address(accessed by dma) to allocated memory region.
|
* - this address could be physical address without IOMMU and
|
* device address with IOMMU.
|
* @pages: Array of backing pages.
|
* @sgt: Imported sg_table.
|
* @dmabuf: buffer for this attachment.
|
* @owner: Is this memory internally allocated.
|
*/
|
struct rknpu_mem_object {
|
unsigned long flags;
|
unsigned long size;
|
void __iomem *kv_addr;
|
dma_addr_t dma_addr;
|
struct page **pages;
|
struct sg_table *sgt;
|
struct dma_buf *dmabuf;
|
struct list_head head;
|
unsigned int owner;
|
};
|
|
int rknpu_mem_create_ioctl(struct rknpu_device *rknpu_dev, unsigned long data,
|
struct file *file);
|
int rknpu_mem_destroy_ioctl(struct rknpu_device *rknpu_dev, unsigned long data,
|
struct file *file);
|
int rknpu_mem_sync_ioctl(struct rknpu_device *rknpu_dev, unsigned long data);
|
|
#endif
|
