1#include <linux/pci.h>
2#include <linux/usb.h>
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>
7#include <xen/xen.h>
8
9static int xen_dbgp_op(struct usb_hcd *hcd, int op)
10{
11#ifdef CONFIG_PCI
12 const struct device *ctrlr = hcd_to_bus(hcd)->controller;
13#endif
14 struct physdev_dbgp_op dbgp;
15
16 if (!xen_initial_domain())
17 return 0;
18
19 dbgp.op = op;
20
21#ifdef CONFIG_PCI
22 if (dev_is_pci(ctrlr)) {
23 const struct pci_dev *pdev = to_pci_dev(ctrlr);
24
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;
29 } else
30#endif
31 dbgp.bus = PHYSDEVOP_DBGP_BUS_UNKNOWN;
32
33 return HYPERVISOR_physdev_op(PHYSDEVOP_dbgp_op, &dbgp);
34}
35
36int xen_dbgp_reset_prep(struct usb_hcd *hcd)
37{
38 return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_PREPARE);
39}
40
41int xen_dbgp_external_startup(struct usb_hcd *hcd)
42{
43 return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_DONE);
44}
45
46#ifndef CONFIG_EARLY_PRINTK_DBGP
47#include <linux/export.h>
48EXPORT_SYMBOL_GPL(xen_dbgp_reset_prep);
49EXPORT_SYMBOL_GPL(xen_dbgp_external_startup);
50#endif
51