SPAGE_MASK
#define spage_phys(pent) (sect_to_phys(*(pent)) & SPAGE_MASK)
writel((iova & SPAGE_MASK) | 1,
writel(iova & SPAGE_MASK, SYSMMU_REG(data, flush_start));
writel((iova & SPAGE_MASK) + (num_inv - 1) * SPAGE_SIZE,