3 #include <linux/usb/ehci_def.h>
4 #include <linux/usb/hcd.h>
5 #include <asm/xen/hypercall.h>
6 #include <xen/interface/physdev.h>
9 static int xen_dbgp_op(struct usb_hcd *hcd, int op)
12 const struct device *ctrlr = hcd_to_bus(hcd)->controller;
14 struct physdev_dbgp_op dbgp;
16 if (!xen_initial_domain())
22 if (dev_is_pci(ctrlr)) {
23 const struct pci_dev *pdev = to_pci_dev(ctrlr);
25 dbgp.u.pci.seg = pci_domain_nr(pdev->bus);
26 dbgp.u.pci.bus = pdev->bus->number;
27 dbgp.u.pci.devfn = pdev->devfn;
28 dbgp.bus = PHYSDEVOP_DBGP_BUS_PCI;
31 dbgp.bus = PHYSDEVOP_DBGP_BUS_UNKNOWN;
33 return HYPERVISOR_physdev_op(PHYSDEVOP_dbgp_op, &dbgp);
36 int xen_dbgp_reset_prep(struct usb_hcd *hcd)
38 return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_PREPARE);
41 int xen_dbgp_external_startup(struct usb_hcd *hcd)
43 return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_DONE);
46 #ifndef CONFIG_EARLY_PRINTK_DBGP
47 #include <linux/export.h>
48 EXPORT_SYMBOL_GPL(xen_dbgp_reset_prep);
49 EXPORT_SYMBOL_GPL(xen_dbgp_external_startup);