android13/kernel-5.10/drivers/rknpu/include/rknpu_iommu.h

41 lines
915 B
C

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) Rockchip Electronics Co.Ltd
* Author: Felix Zeng <felix.zeng@rock-chips.com>
*/
#ifndef __LINUX_RKNPU_IOMMU_H
#define __LINUX_RKNPU_IOMMU_H
#include <linux/mutex.h>
#include <linux/seq_file.h>
#include <linux/iommu.h>
#include <linux/iova.h>
#include <linux/version.h>
#if KERNEL_VERSION(6, 1, 0) > LINUX_VERSION_CODE
#include <linux/dma-iommu.h>
#endif
#include "rknpu_drv.h"
enum iommu_dma_cookie_type {
IOMMU_DMA_IOVA_COOKIE,
IOMMU_DMA_MSI_COOKIE,
};
struct rknpu_iommu_dma_cookie {
enum iommu_dma_cookie_type type;
/* Full allocator for IOMMU_DMA_IOVA_COOKIE */
struct iova_domain iovad;
};
dma_addr_t rknpu_iommu_dma_alloc_iova(struct iommu_domain *domain, size_t size,
u64 dma_limit, struct device *dev);
void rknpu_iommu_dma_free_iova(struct rknpu_iommu_dma_cookie *cookie,
dma_addr_t iova, size_t size);
#endif