search for: arm64_swiotlb_dma_ops

...void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, } #endif } + +#ifdef CONFIG_VIRTIO +#include <linux/virtio_config.h> + +void platform_override_dma_ops(struct virtio_device *vdev) +{ + struct device *dev = vdev->dev.parent; + const struct dma_map_ops *dma_ops = &arm64_swiotlb_dma_ops; + + if (virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) + return; + + dev->archdata.dma_coherent = true; + if (iommu_get_domain_for_dev(dev)) + dma_ops = &iommu_dma_ops; + + set_dma_ops(dev, dma_ops); +} +#endif /* CONFIG_VIRTIO */ -- 2.1.4

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.