search for: virtio_direct_alloc

...t size, enum dma_data_direction dir, > + unsigned long attrs) > +{ > +} No need to implement no-op callbacks in struct dma_map_ops. > + > +int virtio_direct_mapping_error(struct device *hwdev, dma_addr_t dma_addr) > +{ > + return 0; > +} Including this one. > +void *virtio_direct_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, > + gfp_t gfp, unsigned long attrs) > +{ > + void *queue = alloc_pages_exact(PAGE_ALIGN(size), gfp); > + > + if (queue) { > + phys_addr_t phys_addr = virt_to_phys(queue); > + *dma_handle = (dma_addr_t)phys_addr; > +...

...+ return page_to_phys(page) + offset; +} + +void virtio_direct_unmap_page(struct device *hwdev, dma_addr_t dev_addr, + size_t size, enum dma_data_direction dir, + unsigned long attrs) +{ +} + +int virtio_direct_mapping_error(struct device *hwdev, dma_addr_t dma_addr) +{ + return 0; +} + +void *virtio_direct_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, + gfp_t gfp, unsigned long attrs) +{ + void *queue = alloc_pages_exact(PAGE_ALIGN(size), gfp); + + if (queue) { + phys_addr_t phys_addr = virt_to_phys(queue); + *dma_handle = (dma_addr_t)phys_addr; + + if (WARN_ON_ONCE(*dma_handle != phys...

This patch series is the follow up on the discussions we had before about the RFC titled [RFC,V2] virtio: Add platform specific DMA API translation for virito devices (https://patchwork.kernel.org/patch/10417371/). There were suggestions about doing away with two different paths of transactions with the host/QEMU, first being the direct GPA and the other being the DMA API based translations.

This patch series is the follow up on the discussions we had before about the RFC titled [RFC,V2] virtio: Add platform specific DMA API translation for virito devices (https://patchwork.kernel.org/patch/10417371/). There were suggestions about doing away with two different paths of transactions with the host/QEMU, first being the direct GPA and the other being the DMA API based translations.