diff options
Diffstat (limited to 'arch/sparc64/kernel/iommu_common.h')
| -rw-r--r-- | arch/sparc64/kernel/iommu_common.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/iommu_common.h b/arch/sparc64/kernel/iommu_common.h index 0713bd5..87ace49 100644 --- a/arch/sparc64/kernel/iommu_common.h +++ b/arch/sparc64/kernel/iommu_common.h @@ -12,6 +12,7 @@ #include <linux/mm.h> #include <linux/scatterlist.h> #include <linux/device.h> +#include <linux/iommu-helper.h> #include <asm/iommu.h> #include <asm/scatterlist.h> @@ -58,6 +59,18 @@ static inline unsigned long calc_npages(struct scatterlist *sglist, int nelems) return npages; } +static inline int is_span_boundary(unsigned long entry, + unsigned long shift, + unsigned long boundary_size, + struct scatterlist *outs, + struct scatterlist *sg) +{ + unsigned long paddr = SG_ENT_PHYS_ADDRESS(outs); + int nr = iommu_num_pages(paddr, outs->dma_length + sg->length); + + return iommu_is_span_boundary(entry, nr, shift, boundary_size); +} + extern unsigned long iommu_range_alloc(struct device *dev, struct iommu *iommu, unsigned long npages, |