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)
11 const struct device *ctrlr = hcd_to_bus(hcd)->controller;
12 struct physdev_dbgp_op dbgp;
14 if (!xen_initial_domain())
20 if (ctrlr->bus == &pci_bus_type) {
21 const struct pci_dev *pdev = to_pci_dev(ctrlr);
23 dbgp.u.pci.seg = pci_domain_nr(pdev->bus);
24 dbgp.u.pci.bus = pdev->bus->number;
25 dbgp.u.pci.devfn = pdev->devfn;
26 dbgp.bus = PHYSDEVOP_DBGP_BUS_PCI;
29 dbgp.bus = PHYSDEVOP_DBGP_BUS_UNKNOWN;
31 return HYPERVISOR_physdev_op(PHYSDEVOP_dbgp_op, &dbgp);
34 int xen_dbgp_reset_prep(struct usb_hcd *hcd)
36 return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_PREPARE);
39 int xen_dbgp_external_startup(struct usb_hcd *hcd)
41 return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_DONE);
44 #ifndef CONFIG_EARLY_PRINTK_DBGP
45 #include <linux/export.h>
46 EXPORT_SYMBOL_GPL(xen_dbgp_reset_prep);
47 EXPORT_SYMBOL_GPL(xen_dbgp_external_startup);