On Tue, 11 Jun 2024 19:41:33 +0800 Xuan Zhuo wrote: > +/** > + * virtqueue_dma_map_page_attrs - map DMA for _vq > + * @_vq: the struct virtqueue we're talking about. > + * @page: the page to do dma > + * @offset: the offset inside the page > + * @size: the size of the page to do dma > + * @dir: DMA direction > + * @attrs: DMA Attrs > + * > + * The caller calls this to do dma mapping in advance. The DMA address can be > + * passed to this _vq when it is in pre-mapped mode. > + * > + * return DMA address. Caller should check that by virtqueue_dma_mapping_error(). You gotta format the return value doc in a kdoc-sanctioned way. please run ./scripts/kernel-doc -none -Wall to find such issues > + */ > +dma_addr_t virtqueue_dma_map_page_attrs(struct virtqueue *_vq, struct page *page, > + size_t offset, size_t size, > + enum dma_data_direction dir, > + unsigned long attrs)
