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#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>
#ifdef CONFIG_XEN
/* Needed for arch/i386/kernel/swiotlb.c and arch/i386/kernel/pci-dma-xen.c */
#include <asm/hypervisor.h>
/* Needed for arch/i386/kernel/swiotlb.c */
#include <asm/swiotlb.h>
#endif
#define dma_alloc_coherent platform_dma_alloc_coherent
#define dma_alloc_noncoherent platform_dma_alloc_coherent /* coherent mem. is cheap */
#define dma_free_coherent platform_dma_free_coherent
#define dma_free_noncoherent platform_dma_free_coherent
#define dma_map_single platform_dma_map_single
#define dma_map_sg platform_dma_map_sg
#define dma_unmap_single platform_dma_unmap_single
#define dma_unmap_sg platform_dma_unmap_sg
#define dma_sync_single_for_cpu platform_dma_sync_single_for_cpu
#define dma_sync_sg_for_cpu platform_dma_sync_sg_for_cpu
#define dma_sync_single_for_device platform_dma_sync_single_for_device
#define dma_sync_sg_for_device platform_dma_sync_sg_for_device
#define dma_mapping_error platform_dma_mapping_error
#define dma_map_page(dev, pg, off, size, dir) \
dma_map_single(dev, page_address(pg) + (off), (size), (dir))
#define dma_unmap_page(dev, dma_addr, size, dir) \
dma_unmap_single(dev, dma_addr, size, dir)
/*
* Rest of this file is part of the "Advanced DMA API". Use at your own risk.
* See Documentation/DMA-API.txt for details.
*/
#define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir) \
dma_sync_single_for_cpu(dev, dma_handle, size, dir)
#define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir) \
dma_sync_single_for_device(dev, dma_handle, size, dir)
#define dma_supported platform_dma_supported
static inline int
dma_set_mask (struct device *dev, u64 mask)
{
if (!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
*dev->dma_mask = mask;
return 0;
}
extern int dma_get_cache_alignment(void);
static inline void
dma_cache_sync (void *vaddr, size_t size, enum dma_data_direction dir)
{
/*
* IA-64 is cache-coherent, so this is mostly a no-op. However, we do need to
* ensure that dma_cache_sync() enforces order, hence the mb().
*/
mb();
}
#define dma_is_consistent(dma_handle) (1) /* all we do is coherent memory... */
#ifdef CONFIG_XEN
static inline int
range_straddles_page_boundary(void *p, size_t size)
{
extern unsigned long *contiguous_bitmap;
if (!is_running_on_xen())
return 0;
return (((((unsigned long)p & ~PAGE_MASK) + size) > PAGE_SIZE) &&
!test_bit(__pa(p) >> PAGE_SHIFT, contiguous_bitmap));
}
#else
#define range_straddles_page_boundary(addr, size) (0)
#endif
#endif /* _ASM_IA64_DMA_MAPPING_H */
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