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linux-next/include/linux/iommu-helper.h
Thomas Gleixner 1e19b16a30 AMD IOMMU: use iommu_device_max_index, fix
include/linux/iommu-helper.h has no header guards, which breaks
sparc64 build. Add them.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-06 16:51:30 +02:00

27 lines
822 B
C

#ifndef _LINUX_IOMMU_HELPER_H
#define _LINUX_IOMMU_HELPER_H
static inline unsigned long iommu_device_max_index(unsigned long size,
unsigned long offset,
u64 dma_mask)
{
if (size + offset > dma_mask)
return dma_mask - offset + 1;
else
return size;
}
extern int iommu_is_span_boundary(unsigned int index, unsigned int nr,
unsigned long shift,
unsigned long boundary_size);
extern void iommu_area_reserve(unsigned long *map, unsigned long i, int len);
extern unsigned long iommu_area_alloc(unsigned long *map, unsigned long size,
unsigned long start, unsigned int nr,
unsigned long shift,
unsigned long boundary_size,
unsigned long align_mask);
extern void iommu_area_free(unsigned long *map, unsigned long start,
unsigned int nr);
#endif