| #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 (ctrlr->bus == &pci_bus_type) { |
| 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 |