SMMU_NUM_PDE
#define SMMU_SIZE_PD (SMMU_NUM_PDE * 4)
u32 val[SMMU_NUM_PDE];
return (iova >> SMMU_PDE_SHIFT) & (SMMU_NUM_PDE - 1);
as->count = kcalloc(SMMU_NUM_PDE, sizeof(u32), GFP_KERNEL);
as->pts = kzalloc_objs(*as->pts, SMMU_NUM_PDE);