Re: [PATCH v6 6/6] iommu/tegra-smmu: Add pagetable mappings to debugfs

Dmitry Osipenko
2021-09-14T13:29:23Z

14.09.2021 04:38, Nicolin Chen пишет:
> +static unsigned long pd_pt_index_iova(unsigned int pd_index, unsigned int pt_index)
> +{
> + return ((dma_addr_t)pd_index & (SMMU_NUM_PDE - 1)) << SMMU_PDE_SHIFT |
> + ((dma_addr_t)pt_index & (SMMU_NUM_PTE - 1)) << SMMU_PTE_SHIFT;
> +}

We know that IOVA is fixed to u32 for this controller. Can we avoid all
these dma_addr_t castings? It should make code cleaner a tad, IMO.