On Wed, Oct 25, 2023 at 12:26:58PM +0530, jeshwank wrote:
> + tee_buf->vaddr = dma_alloc_coherent(psp->dev, size, &tee_buf->dma, gfp);
> + if (!tee_buf->vaddr || !tee_buf->dma) {
> + kfree(tee_buf);
> + return NULL;
> + }
> +
> + tee_buf->size = size;
> +
> + /* Check whether IOMMU is present. If present, translate IOVA
> + * to physical address, else the dma handle is the physical
> + * address.
> + */
> + dom = iommu_get_domain_for_dev(psp->dev);
> + if (dom)
> + tee_buf->paddr = iommu_iova_to_phys(dom, tee_buf->dma);
> + else
No, you can't mix the DMA API and iommu API. You need to stick to one
or the other.
