49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#ifndef _ASM_IA64_DMA_MAPPING_H
|
||
|
|
#define _ASM_IA64_DMA_MAPPING_H
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2003-2004 Hewlett-Packard Co
|
||
|
|
* David Mosberger-Tang <davidm@hpl.hp.com>
|
||
|
|
*/
|
||
|
|
#include <asm/machvec.h>
|
||
|
|
#include <linux/scatterlist.h>
|
||
|
|
#include <asm/swiotlb.h>
|
||
|
|
#include <linux/dma-debug.h>
|
||
|
|
|
||
|
|
#define ARCH_HAS_DMA_GET_REQUIRED_MASK
|
||
|
|
|
||
|
|
extern const struct dma_map_ops *dma_ops;
|
||
|
|
extern struct ia64_machine_vector ia64_mv;
|
||
|
|
extern void set_iommu_machvec(void);
|
||
|
|
|
||
|
|
extern void machvec_dma_sync_single(struct device *, dma_addr_t, size_t,
|
||
|
|
enum dma_data_direction);
|
||
|
|
extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int,
|
||
|
|
enum dma_data_direction);
|
||
|
|
|
||
|
|
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
|
||
|
|
{
|
||
|
|
return platform_dma_get_ops(NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
|
||
|
|
{
|
||
|
|
if (!dev->dma_mask)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
return addr + size - 1 <= *dev->dma_mask;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
|
||
|
|
{
|
||
|
|
return paddr;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
|
||
|
|
{
|
||
|
|
return daddr;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* _ASM_IA64_DMA_MAPPING_H */
|