38 lines
860 B
C
38 lines
860 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
#ifndef ASMARM_DMA_IOMMU_H
|
|
#define ASMARM_DMA_IOMMU_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/mm_types.h>
|
|
#include <linux/scatterlist.h>
|
|
#include <linux/dma-debug.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/dma-mapping-fast.h>
|
|
|
|
struct dma_iommu_mapping {
|
|
/* iommu specific data */
|
|
struct iommu_domain *domain;
|
|
bool init;
|
|
struct kref kref;
|
|
const struct dma_map_ops *ops;
|
|
|
|
/* Protects bitmap */
|
|
spinlock_t lock;
|
|
void *bitmap;
|
|
size_t bits;
|
|
dma_addr_t base;
|
|
|
|
struct dma_fast_smmu_mapping *fast;
|
|
};
|
|
|
|
#ifdef CONFIG_ARM64_DMA_USE_IOMMU
|
|
void arm_iommu_put_dma_cookie(struct iommu_domain *domain);
|
|
#else /* !CONFIG_ARM64_DMA_USE_IOMMU */
|
|
static inline void arm_iommu_put_dma_cookie(struct iommu_domain *domain) {}
|
|
#endif /* CONFIG_ARM64_DMA_USE_IOMMU */
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif
|