Contributors: 9
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Robin Murphy |
183 |
62.67% |
7 |
41.18% |
| Julien Grall |
65 |
22.26% |
1 |
5.88% |
| Christoph Hellwig |
20 |
6.85% |
3 |
17.65% |
| tom |
13 |
4.45% |
1 |
5.88% |
| Arnd Bergmann |
3 |
1.03% |
1 |
5.88% |
| Joerg Roedel |
3 |
1.03% |
1 |
5.88% |
| Jean-Philippe Brucker |
2 |
0.68% |
1 |
5.88% |
| Marc Zyngier |
2 |
0.68% |
1 |
5.88% |
| Thomas Gleixner |
1 |
0.34% |
1 |
5.88% |
| Total |
292 |
|
17 |
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2014-2015 ARM Ltd.
*/
#ifndef __DMA_IOMMU_H
#define __DMA_IOMMU_H
#include <linux/errno.h>
#include <linux/types.h>
#ifdef CONFIG_IOMMU_DMA
#include <linux/dma-mapping.h>
#include <linux/iommu.h>
#include <linux/msi.h>
/* Domain management interface for IOMMU drivers */
int iommu_get_dma_cookie(struct iommu_domain *domain);
int iommu_get_msi_cookie(struct iommu_domain *domain, dma_addr_t base);
void iommu_put_dma_cookie(struct iommu_domain *domain);
/* Setup call for arch DMA mapping code */
void iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 dma_limit);
int iommu_dma_init_fq(struct iommu_domain *domain);
/* The DMA API isn't _quite_ the whole story, though... */
/*
* iommu_dma_prepare_msi() - Map the MSI page in the IOMMU device
*
* The MSI page will be stored in @desc.
*
* Return: 0 on success otherwise an error describing the failure.
*/
int iommu_dma_prepare_msi(struct msi_desc *desc, phys_addr_t msi_addr);
/* Update the MSI message if required. */
void iommu_dma_compose_msi_msg(struct msi_desc *desc,
struct msi_msg *msg);
void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list);
void iommu_dma_free_cpu_cached_iovas(unsigned int cpu,
struct iommu_domain *domain);
extern bool iommu_dma_forcedac;
#else /* CONFIG_IOMMU_DMA */
struct iommu_domain;
struct msi_desc;
struct msi_msg;
struct device;
static inline void iommu_setup_dma_ops(struct device *dev, u64 dma_base,
u64 dma_limit)
{
}
static inline int iommu_dma_init_fq(struct iommu_domain *domain)
{
return -EINVAL;
}
static inline int iommu_get_dma_cookie(struct iommu_domain *domain)
{
return -ENODEV;
}
static inline int iommu_get_msi_cookie(struct iommu_domain *domain, dma_addr_t base)
{
return -ENODEV;
}
static inline void iommu_put_dma_cookie(struct iommu_domain *domain)
{
}
static inline int iommu_dma_prepare_msi(struct msi_desc *desc,
phys_addr_t msi_addr)
{
return 0;
}
static inline void iommu_dma_compose_msi_msg(struct msi_desc *desc,
struct msi_msg *msg)
{
}
static inline void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list)
{
}
#endif /* CONFIG_IOMMU_DMA */
#endif /* __DMA_IOMMU_H */