diff options
author | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2013-10-25 06:39:49 -0400 |
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committer | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2013-10-25 06:39:49 -0400 |
commit | 7100b077ab4ff5fb0ba7760ce54465f623a0a763 (patch) | |
tree | bc832ec58128110760e9270695158c8c502bc917 /arch/ia64 | |
parent | 1b65c4e5a9af1a1c61e792e2d0ed481e0c1f21a9 (diff) |
xen: introduce xen_dma_map/unmap_page and xen_dma_sync_single_for_cpu/device
Introduce xen_dma_map_page, xen_dma_unmap_page,
xen_dma_sync_single_for_cpu and xen_dma_sync_single_for_device.
They have empty implementations on x86 and ia64 but they call the
corresponding platform dma_ops function on arm and arm64.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Changes in v9:
- xen_dma_map_page return void, avoid page_to_phys.
Diffstat (limited to 'arch/ia64')
-rw-r--r-- | arch/ia64/include/asm/xen/page-coherent.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/xen/page-coherent.h b/arch/ia64/include/asm/xen/page-coherent.h index 37b929c117bf..96e42f97fa1f 100644 --- a/arch/ia64/include/asm/xen/page-coherent.h +++ b/arch/ia64/include/asm/xen/page-coherent.h | |||
@@ -21,4 +21,18 @@ static inline void xen_free_coherent_pages(struct device *hwdev, size_t size, | |||
21 | free_pages((unsigned long) cpu_addr, get_order(size)); | 21 | free_pages((unsigned long) cpu_addr, get_order(size)); |
22 | } | 22 | } |
23 | 23 | ||
24 | static inline void xen_dma_map_page(struct device *hwdev, struct page *page, | ||
25 | unsigned long offset, size_t size, enum dma_data_direction dir, | ||
26 | struct dma_attrs *attrs) { } | ||
27 | |||
28 | static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle, | ||
29 | size_t size, enum dma_data_direction dir, | ||
30 | struct dma_attrs *attrs) { } | ||
31 | |||
32 | static inline void xen_dma_sync_single_for_cpu(struct device *hwdev, | ||
33 | dma_addr_t handle, size_t size, enum dma_data_direction dir) { } | ||
34 | |||
35 | static inline void xen_dma_sync_single_for_device(struct device *hwdev, | ||
36 | dma_addr_t handle, size_t size, enum dma_data_direction dir) { } | ||
37 | |||
24 | #endif /* _ASM_IA64_XEN_PAGE_COHERENT_H */ | 38 | #endif /* _ASM_IA64_XEN_PAGE_COHERENT_H */ |