kernel-ark/include/asm-ia64/dma-mapping.h
Arthur Kepner 309df0c503 dma/ia64: update ia64 machvecs, swiotlb.c
Change all ia64 machvecs to use the new dma_*map*_attrs() interfaces.
Implement the old dma_*map_*() interfaces in terms of the corresponding new
interfaces.  For ia64/sn, make use of one dma attribute,
DMA_ATTR_WRITE_BARRIER.  Introduce swiotlb_*map*_attrs() functions.

Signed-off-by: Arthur Kepner <akepner@sgi.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Jes Sorensen <jes@sgi.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Roland Dreier <rdreier@cisco.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: David Miller <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Grant Grundler <grundler@parisc-linux.org>
Cc: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29 08:06:12 -07:00

98 lines
3.1 KiB
C

#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>
#define dma_alloc_coherent platform_dma_alloc_coherent
/* coherent mem. is cheap */
static inline void *
dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t flag)
{
return dma_alloc_coherent(dev, size, dma_handle, flag);
}
#define dma_free_coherent platform_dma_free_coherent
static inline void
dma_free_noncoherent(struct device *dev, size_t size, void *cpu_addr,
dma_addr_t dma_handle)
{
dma_free_coherent(dev, size, cpu_addr, dma_handle);
}
#define dma_map_single_attrs platform_dma_map_single_attrs
static inline dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
size_t size, int dir)
{
return dma_map_single_attrs(dev, cpu_addr, size, dir, NULL);
}
#define dma_map_sg_attrs platform_dma_map_sg_attrs
static inline int dma_map_sg(struct device *dev, struct scatterlist *sgl,
int nents, int dir)
{
return dma_map_sg_attrs(dev, sgl, nents, dir, NULL);
}
#define dma_unmap_single_attrs platform_dma_unmap_single_attrs
static inline void dma_unmap_single(struct device *dev, dma_addr_t cpu_addr,
size_t size, int dir)
{
return dma_unmap_single_attrs(dev, cpu_addr, size, dir, NULL);
}
#define dma_unmap_sg_attrs platform_dma_unmap_sg_attrs
static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sgl,
int nents, int dir)
{
return dma_unmap_sg_attrs(dev, sgl, nents, dir, NULL);
}
#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 (struct device *dev, 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(d, h) (1) /* all we do is coherent memory... */
#endif /* _ASM_IA64_DMA_MAPPING_H */