2005-04-17 06:20:36 +08:00
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#ifndef _ASM_IA64_DMA_MAPPING_H
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#define _ASM_IA64_DMA_MAPPING_H
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/*
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* Copyright (C) 2003-2004 Hewlett-Packard Co
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* David Mosberger-Tang <davidm@hpl.hp.com>
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*/
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#include <asm/machvec.h>
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2007-10-16 17:27:26 +08:00
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#include <linux/scatterlist.h>
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2008-10-18 03:14:13 +08:00
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#include <asm/swiotlb.h>
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struct dma_mapping_ops {
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int (*mapping_error)(struct device *dev,
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dma_addr_t dma_addr);
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void* (*alloc_coherent)(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t gfp);
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void (*free_coherent)(struct device *dev, size_t size,
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void *vaddr, dma_addr_t dma_handle);
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dma_addr_t (*map_single)(struct device *hwdev, unsigned long ptr,
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size_t size, int direction);
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void (*unmap_single)(struct device *dev, dma_addr_t addr,
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size_t size, int direction);
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dma_addr_t (*map_single_attrs)(struct device *dev, void *cpu_addr,
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size_t size, int direction,
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struct dma_attrs *attrs);
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void (*unmap_single_attrs)(struct device *dev,
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dma_addr_t dma_addr,
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size_t size, int direction,
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struct dma_attrs *attrs);
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void (*sync_single_for_cpu)(struct device *hwdev,
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dma_addr_t dma_handle, size_t size,
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int direction);
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void (*sync_single_for_device)(struct device *hwdev,
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dma_addr_t dma_handle, size_t size,
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int direction);
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void (*sync_single_range_for_cpu)(struct device *hwdev,
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dma_addr_t dma_handle, unsigned long offset,
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size_t size, int direction);
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void (*sync_single_range_for_device)(struct device *hwdev,
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dma_addr_t dma_handle, unsigned long offset,
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size_t size, int direction);
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void (*sync_sg_for_cpu)(struct device *hwdev,
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struct scatterlist *sg, int nelems,
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int direction);
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void (*sync_sg_for_device)(struct device *hwdev,
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struct scatterlist *sg, int nelems,
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int direction);
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int (*map_sg)(struct device *hwdev, struct scatterlist *sg,
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int nents, int direction);
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void (*unmap_sg)(struct device *hwdev,
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struct scatterlist *sg, int nents,
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int direction);
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int (*map_sg_attrs)(struct device *dev,
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struct scatterlist *sg, int nents,
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int direction, struct dma_attrs *attrs);
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void (*unmap_sg_attrs)(struct device *dev,
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struct scatterlist *sg, int nents,
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int direction,
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struct dma_attrs *attrs);
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int (*dma_supported_op)(struct device *hwdev, u64 mask);
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int is_phys;
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};
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extern struct dma_mapping_ops *dma_ops;
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extern struct ia64_machine_vector ia64_mv;
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extern void set_iommu_machvec(void);
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2005-04-17 06:20:36 +08:00
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2009-01-05 22:36:13 +08:00
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static inline void *dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t *daddr, gfp_t gfp)
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{
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struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
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return ops->alloc_coherent(dev, size, daddr, gfp | GFP_DMA);
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}
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static inline void dma_free_coherent(struct device *dev, size_t size,
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void *caddr, dma_addr_t daddr)
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{
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struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
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ops->free_coherent(dev, size, caddr, daddr);
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}
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#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
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#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
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static inline dma_addr_t dma_map_single_attrs(struct device *dev,
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void *caddr, size_t size,
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enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
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return ops->map_single_attrs(dev, caddr, size, dir, attrs);
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}
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static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t daddr,
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size_t size,
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enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
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ops->unmap_single_attrs(dev, daddr, size, dir, attrs);
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}
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#define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, NULL)
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#define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, NULL)
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static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sgl,
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int nents, enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
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return ops->map_sg_attrs(dev, sgl, nents, dir, attrs);
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}
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static inline void dma_unmap_sg_attrs(struct device *dev,
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struct scatterlist *sgl, int nents,
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enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
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ops->unmap_sg_attrs(dev, sgl, nents, dir, attrs);
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}
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#define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL)
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#define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, NULL)
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static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t daddr,
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size_t size,
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enum dma_data_direction dir)
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{
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struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
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ops->sync_single_for_cpu(dev, daddr, size, dir);
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}
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static inline void dma_sync_sg_for_cpu(struct device *dev,
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struct scatterlist *sgl,
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int nents, enum dma_data_direction dir)
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{
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struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
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ops->sync_sg_for_cpu(dev, sgl, nents, dir);
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}
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static inline void dma_sync_single_for_device(struct device *dev,
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dma_addr_t daddr,
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size_t size,
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enum dma_data_direction dir)
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{
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struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
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ops->sync_single_for_device(dev, daddr, size, dir);
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}
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static inline void dma_sync_sg_for_device(struct device *dev,
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struct scatterlist *sgl,
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int nents,
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enum dma_data_direction dir)
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{
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struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
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ops->sync_sg_for_device(dev, sgl, nents, dir);
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}
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static inline int dma_mapping_error(struct device *dev, dma_addr_t daddr)
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{
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struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
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return ops->mapping_error(dev, daddr);
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}
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#define dma_map_page(dev, pg, off, size, dir) \
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dma_map_single(dev, page_address(pg) + (off), (size), (dir))
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#define dma_unmap_page(dev, dma_addr, size, dir) \
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dma_unmap_single(dev, dma_addr, size, dir)
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/*
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* Rest of this file is part of the "Advanced DMA API". Use at your own risk.
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* See Documentation/DMA-API.txt for details.
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*/
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#define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir) \
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dma_sync_single_for_cpu(dev, dma_handle, size, dir)
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#define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir) \
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dma_sync_single_for_device(dev, dma_handle, size, dir)
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static inline int dma_supported(struct device *dev, u64 mask)
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{
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struct dma_mapping_ops *ops = platform_dma_get_ops(dev);
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return ops->dma_supported_op(dev, mask);
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}
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static inline int
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dma_set_mask (struct device *dev, u64 mask)
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{
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if (!dev->dma_mask || !dma_supported(dev, mask))
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return -EIO;
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*dev->dma_mask = mask;
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return 0;
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}
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2005-11-07 16:57:54 +08:00
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extern int dma_get_cache_alignment(void);
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static inline void
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dma_cache_sync (struct device *dev, void *vaddr, size_t size,
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enum dma_data_direction dir)
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{
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/*
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* IA-64 is cache-coherent, so this is mostly a no-op. However, we do need to
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* ensure that dma_cache_sync() enforces order, hence the mb().
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*/
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mb();
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}
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2006-12-07 12:38:54 +08:00
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#define dma_is_consistent(d, h) (1) /* all we do is coherent memory... */
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#endif /* _ASM_IA64_DMA_MAPPING_H */
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