| /* iommu_common.h: UltraSparc SBUS/PCI common iommu declarations. | |
| * | |
| * Copyright (C) 1999, 2008 David S. Miller (davem@davemloft.net) | |
| */ | |
| #ifndef _IOMMU_COMMON_H | |
| #define _IOMMU_COMMON_H | |
| #include <linux/kernel.h> | |
| #include <linux/types.h> | |
| #include <linux/sched.h> | |
| #include <linux/mm.h> | |
| #include <linux/scatterlist.h> | |
| #include <linux/device.h> | |
| #include <linux/iommu-helper.h> | |
| #include <linux/scatterlist.h> | |
| #include <asm/iommu.h> | |
| /* | |
| * These give mapping size of each iommu pte/tlb. | |
| */ | |
| #define IO_PAGE_SHIFT 13 | |
| #define IO_PAGE_SIZE (1UL << IO_PAGE_SHIFT) | |
| #define IO_PAGE_MASK (~(IO_PAGE_SIZE-1)) | |
| #define IO_PAGE_ALIGN(addr) ALIGN(addr, IO_PAGE_SIZE) | |
| #define IO_TSB_ENTRIES (128*1024) | |
| #define IO_TSB_SIZE (IO_TSB_ENTRIES * 8) | |
| /* | |
| * This is the hardwired shift in the iotlb tag/data parts. | |
| */ | |
| #define IOMMU_PAGE_SHIFT 13 | |
| #define SG_ENT_PHYS_ADDRESS(SG) (__pa(sg_virt((SG)))) | |
| 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, | |
| IO_PAGE_SIZE); | |
| return iommu_is_span_boundary(entry, nr, shift, boundary_size); | |
| } | |
| #endif /* _IOMMU_COMMON_H */ |