On Thu, May 19, 2022 at 05:45:06PM +0800, Yi Liu wrote:
> Hi Jason,
>
> On 2022/3/19 01:27, Jason Gunthorpe wrote:
>
> > +/**
> > + * iommufd_device_attach - Connect a device to an iommu_domain
> > + * @idev: device to attach
> > + * @pt_id: Input a IOMMUFD_OBJ_IOAS, or IOMMUFD_OBJ_HW_PAGETABLE
>
Hi Jason,
On 2022/3/19 01:27, Jason Gunthorpe wrote:
+/**
+ * iommufd_device_attach - Connect a device to an iommu_domain
+ * @idev: device to attach
+ * @pt_id: Input a IOMMUFD_OBJ_IOAS, or IOMMUFD_OBJ_HW_PAGETABLE
+ * Output the IOMMUFD_OBJ_HW_PAGETABLE ID
+ * @flags: Optional flags
+
On 2022/3/19 01:27, Jason Gunthorpe wrote:
+
+/**
+ * iommufd_device_attach - Connect a device to an iommu_domain
+ * @idev: device to attach
+ * @pt_id: Input a IOMMUFD_OBJ_IOAS, or IOMMUFD_OBJ_HW_PAGETABLE
+ * Output the IOMMUFD_OBJ_HW_PAGETABLE ID
+ * @flags: Optional flags
+ *
+ *
On Wed, Mar 23, 2022 at 12:10:01PM -0600, Alex Williamson wrote:
> > +EXPORT_SYMBOL_GPL(iommufd_bind_pci_device);
>
> I'm stumped why this needs to be PCI specific. Anything beyond the RID
> comment? Please enlighten. Thanks,
The way it turned out in the end it is not for a good reason any
mor
On Fri, 18 Mar 2022 14:27:35 -0300
Jason Gunthorpe wrote:
> +/**
> + * iommufd_bind_pci_device - Bind a physical device to an iommu fd
> + * @fd: iommufd file descriptor.
> + * @pdev: Pointer to a physical PCI device struct
> + * @id: Output ID number to return to userspace for this device
> + *
>
Add the four functions external drivers need to connect physical DMA to
the IOMMUFD:
iommufd_bind_pci_device() / iommufd_unbind_device()
Register the device with iommufd and establish security isolation.
iommufd_device_attach() / iommufd_device_detach()
Connect a bound device to a page table
