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Viewing changes to arch/ia64/include/asm/xen/page-coherent.h

  • Committer: Package Import Robot
  • Author(s): Ben Hutchings
  • Date: 2014-02-02 16:57:49 UTC
  • mfrom: (1.1.10) (0.1.21 sid)
  • Revision ID: package-import@ubuntu.com-20140202165749-tw94o9t1t0a8txk6
Tags: 3.13-1~exp2
Merge changes from sid up to 3.12.6-3

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arch/ia64/include/asm/xen/page-coherent.h
 
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#ifndef _ASM_IA64_XEN_PAGE_COHERENT_H
 
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#define _ASM_IA64_XEN_PAGE_COHERENT_H
 
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#include <asm/page.h>
 
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#include <linux/dma-attrs.h>
 
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#include <linux/dma-mapping.h>
 
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static inline void *xen_alloc_coherent_pages(struct device *hwdev, size_t size,
 
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                dma_addr_t *dma_handle, gfp_t flags,
 
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                struct dma_attrs *attrs)
 
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{
 
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        void *vstart = (void*)__get_free_pages(flags, get_order(size));
 
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        *dma_handle = virt_to_phys(vstart);
 
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        return vstart;
 
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}
 
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static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
 
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                void *cpu_addr, dma_addr_t dma_handle,
 
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                struct dma_attrs *attrs)
 
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{
 
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        free_pages((unsigned long) cpu_addr, get_order(size));
 
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}
 
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static inline void xen_dma_map_page(struct device *hwdev, struct page *page,
 
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             unsigned long offset, size_t size, enum dma_data_direction dir,
 
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             struct dma_attrs *attrs) { }
 
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static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
 
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                size_t size, enum dma_data_direction dir,
 
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                struct dma_attrs *attrs) { }
 
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static inline void xen_dma_sync_single_for_cpu(struct device *hwdev,
 
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                dma_addr_t handle, size_t size, enum dma_data_direction dir) { }
 
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static inline void xen_dma_sync_single_for_device(struct device *hwdev,
 
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                dma_addr_t handle, size_t size, enum dma_data_direction dir) { }
 
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#endif /* _ASM_IA64_XEN_PAGE_COHERENT_H */