#include <linux/pci.h> #include <linux/usb.h> #include <linux/usb/ehci_def.h> #include <linux/usb/hcd.h> #include <asm/xen/hypercall.h> #include <xen/interface/physdev.h> #include <xen/xen.h> static int xen_dbgp_op(struct usb_hcd *hcd, int op) { #ifdef CONFIG_PCI const struct device *ctrlr = hcd_to_bus(hcd)->controller; #endif struct physdev_dbgp_op dbgp; if (!xen_initial_domain()) return 0; dbgp.op = op; #ifdef CONFIG_PCI if (dev_is_pci(ctrlr)) { const struct pci_dev *pdev = to_pci_dev(ctrlr); dbgp.u.pci.seg = pci_domain_nr(pdev->bus); dbgp.u.pci.bus = pdev->bus->number; dbgp.u.pci.devfn = pdev->devfn; dbgp.bus = PHYSDEVOP_DBGP_BUS_PCI; } else #endif dbgp.bus = PHYSDEVOP_DBGP_BUS_UNKNOWN; return HYPERVISOR_physdev_op(PHYSDEVOP_dbgp_op, &dbgp); } int xen_dbgp_reset_prep(struct usb_hcd *hcd) { return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_PREPARE); } int xen_dbgp_external_startup(struct usb_hcd *hcd) { return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_DONE); } #ifndef CONFIG_EARLY_PRINTK_DBGP #include <linux/export.h> EXPORT_SYMBOL_GPL(xen_dbgp_reset_prep); EXPORT_SYMBOL_GPL(xen_dbgp_external_startup); #endif