search for: virt_set_iommu_op

...e(dev); > + > + /* Assume coherent, as well as full 64-bit addresses. */ > +#ifdef CONFIG_ARCH_HAS_SETUP_DMA_OPS > + arch_setup_dma_ops(dev, 0, ~0ULL, iommu_ops, true); > +#else > + iommu_setup_dma_ops(dev, 0, ~0ULL); > +#endif > + return 0; > +} > + > +/** > + * virt_set_iommu_ops - Set the IOMMU ops of a virtual IOMMU device > + * @dev: the IOMMU device (transport) > + * @ops: the new IOMMU ops or NULL > + * > + * Setup the iommu_ops associated to a viommu_spec, once the driver is loaded > + * and the device probed. > + */ > +void virt_set_iommu_ops(st...

...e(dev); > + > + /* Assume coherent, as well as full 64-bit addresses. */ > +#ifdef CONFIG_ARCH_HAS_SETUP_DMA_OPS > + arch_setup_dma_ops(dev, 0, ~0ULL, iommu_ops, true); > +#else > + iommu_setup_dma_ops(dev, 0, ~0ULL); > +#endif > + return 0; > +} > + > +/** > + * virt_set_iommu_ops - Set the IOMMU ops of a virtual IOMMU device > + * @dev: the IOMMU device (transport) > + * @ops: the new IOMMU ops or NULL > + * > + * Setup the iommu_ops associated to a viommu_spec, once the driver is > loaded > + * and the device probed. > + */ > +void virt_set_iommu_o...

...e(dev); > + > + /* Assume coherent, as well as full 64-bit addresses. */ > +#ifdef CONFIG_ARCH_HAS_SETUP_DMA_OPS > + arch_setup_dma_ops(dev, 0, ~0ULL, iommu_ops, true); > +#else > + iommu_setup_dma_ops(dev, 0, ~0ULL); > +#endif > + return 0; > +} > + > +/** > + * virt_set_iommu_ops - Set the IOMMU ops of a virtual IOMMU device > + * @dev: the IOMMU device (transport) > + * @ops: the new IOMMU ops or NULL > + * > + * Setup the iommu_ops associated to a viommu_spec, once the driver is > loaded > + * and the device probed. > + */ > +void virt_set_iommu_o...

...e(dev); > + > + /* Assume coherent, as well as full 64-bit addresses. */ > +#ifdef CONFIG_ARCH_HAS_SETUP_DMA_OPS > + arch_setup_dma_ops(dev, 0, ~0ULL, iommu_ops, true); > +#else > + iommu_setup_dma_ops(dev, 0, ~0ULL); > +#endif > + return 0; > +} > + > +/** > + * virt_set_iommu_ops - Set the IOMMU ops of a virtual IOMMU device > + * @dev: the IOMMU device (transport) > + * @ops: the new IOMMU ops or NULL > + * > + * Setup the iommu_ops associated to a viommu_spec, once the driver is > loaded > + * and the device probed. > + */ > +void virt_set_iommu_o...

...vice_iommu_mapped(dev)) + iommu_probe_device(dev); + +#ifdef CONFIG_ARCH_HAS_SETUP_DMA_OPS + /* Assume coherent, as well as full 64-bit addresses. */ + arch_setup_dma_ops(dev, 0, ~0UL, iommu_ops, true); +#else + if (iommu_ops) + iommu_setup_dma_ops(dev, 0, ~0UL); +#endif + return 0; +} + +/** + * virt_set_iommu_ops - Set the IOMMU ops of a virtual IOMMU device + * + * Setup the iommu_ops associated to a viommu_spec, once the driver is loaded + * and the device probed. + */ +void virt_set_iommu_ops(struct device *dev, struct iommu_ops *ops) +{ + struct viommu_spec *viommu_spec; + + mutex_lock(&viommus_loc...

Add topology description to the virtio-iommu driver and enable x86 platforms. Since the RFC [1] I've mostly given up on ACPI tables, since the internal discussions seem to have reached a dead end. The built-in topology description presented here isn't ideal, but it is simple to implement and doesn't impose a dependency on ACPI or device-tree, which can be beneficial to lightweight

...#ifdef CONFIG_ARCH_HAS_SETUP_DMA_OPS > + /* Assume coherent, as well as full 64-bit addresses. */ > + arch_setup_dma_ops(dev, 0, ~0UL, iommu_ops, true); > +#else > + if (iommu_ops) > + iommu_setup_dma_ops(dev, 0, ~0UL); > +#endif > + return 0; > +} > + > +/** > + * virt_set_iommu_ops - Set the IOMMU ops of a virtual IOMMU device > + * > + * Setup the iommu_ops associated to a viommu_spec, once the driver is loaded > + * and the device probed. > + */ > +void virt_set_iommu_ops(struct device *dev, struct iommu_ops *ops) > +{ > + struct viommu_spec *viommu_sp...

I'm seeking feedback on multi-platform support for virtio-iommu. At the moment only devicetree (DT) is supported and we don't have a pleasant solution for other platforms. Once we figure out the topology description, x86 support is trivial. Since the IOMMU manages memory accesses from other devices, the guest kernel needs to initialize the IOMMU before endpoints start issuing DMA.

I'm seeking feedback on multi-platform support for virtio-iommu. At the moment only devicetree (DT) is supported and we don't have a pleasant solution for other platforms. Once we figure out the topology description, x86 support is trivial. Since the IOMMU manages memory accesses from other devices, the guest kernel needs to initialize the IOMMU before endpoints start issuing DMA.