[linux-2.6-block.git] / arch / ia64 / include / asm / xen / page-coherent.h

#ifndef _ASM_IA64_XEN_PAGE_COHERENT_H
#define _ASM_IA64_XEN_PAGE_COHERENT_H

#include <asm/page.h>
#include <linux/dma-attrs.h>
#include <linux/dma-mapping.h>

static inline void *xen_alloc_coherent_pages(struct device *hwdev, size_t size,
		dma_addr_t *dma_handle, gfp_t flags,
		struct dma_attrs *attrs)
{
	void *vstart = (void*)__get_free_pages(flags, get_order(size));
	*dma_handle = virt_to_phys(vstart);
	return vstart;
}

static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
		void *cpu_addr, dma_addr_t dma_handle,
		struct dma_attrs *attrs)
{
	free_pages((unsigned long) cpu_addr, get_order(size));
}

static inline void xen_dma_map_page(struct device *hwdev, struct page *page,
	     unsigned long offset, size_t size, enum dma_data_direction dir,
	     struct dma_attrs *attrs) { }

static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
		size_t size, enum dma_data_direction dir,
		struct dma_attrs *attrs) { }

static inline void xen_dma_sync_single_for_cpu(struct device *hwdev,
		dma_addr_t handle, size_t size, enum dma_data_direction dir) { }

static inline void xen_dma_sync_single_for_device(struct device *hwdev,
		dma_addr_t handle, size_t size, enum dma_data_direction dir) { }

#endif /* _ASM_IA64_XEN_PAGE_COHERENT_H */
Commit	Line	Data
d6fe76c5 SS	1	#ifndef _ASM_IA64_XEN_PAGE_COHERENT_H
	2	#define _ASM_IA64_XEN_PAGE_COHERENT_H
	3
	4	#include <asm/page.h>
	5	#include <linux/dma-attrs.h>
	6	#include <linux/dma-mapping.h>
	7
	8	static inline void xen_alloc_coherent_pages(struct device hwdev, size_t size,
	9	dma_addr_t *dma_handle, gfp_t flags,
	10	struct dma_attrs *attrs)
	11	{
	12	void vstart = (void)__get_free_pages(flags, get_order(size));
	13	*dma_handle = virt_to_phys(vstart);
	14	return vstart;
	15	}
	16
	17	static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
	18	void *cpu_addr, dma_addr_t dma_handle,
	19	struct dma_attrs *attrs)
	20	{
	21	free_pages((unsigned long) cpu_addr, get_order(size));
	22	}
	23
7100b077 SS	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
d6fe76c5	38	#endif /* _ASM_IA64_XEN_PAGE_COHERENT_H */