VME_IOMMU_DVMA_BASE
map->dm_segs[0].ds_addr -= VME_IOMMU_DVMA_BASE;
map->dm_segs[0].ds_addr += VME_IOMMU_DVMA_BASE;
#define VME_IOMMU_DVMA_AM24_BASE VME_IOMMU_DVMA_BASE
#define VME_IOMMU_DVMA_AM32_BASE VME_IOMMU_DVMA_BASE