Displaying 4 results from an estimated 4 matches for "virtio_direct_unmap_pag".
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virtio_direct_unmap_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_hand...
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.