search for: virtio_direct_unmap_page

Displaying 4 results from an estimated 4 matches for "virtio_direct_unmap_page".

Did you mean: virtio_direct_map_page
2018 Jul 30
1
[RFC 1/4] virtio: Define virtio_direct_dma_ops structure
...O_F_IOMMU_PLATFORM. > + */ > +dma_addr_t virtio_direct_map_page(struct device *dev, struct page *page, > + unsigned long offset, size_t size, > + enum dma_data_direction dir, > + unsigned long attrs) All these functions should probably be marked static. > +void virtio_direct_unmap_page(struct device *hwdev, dma_addr_t dev_addr, > + size_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) > +{ &...
2018 Jul 20
0
[RFC 1/4] virtio: Define virtio_direct_dma_ops structure
...A instead of an IOVA in absence of VIRTIO_F_IOMMU_PLATFORM. + */ +dma_addr_t virtio_direct_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction dir, + unsigned long attrs) +{ + 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_handl...
2018 Jul 20
15
[RFC 0/4] Virtio uses DMA API for all devices
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.
2018 Jul 20
15
[RFC 0/4] Virtio uses DMA API for all devices
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.