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9fa5780b JB |
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 | ||
9 | static int xen_dbgp_op(struct usb_hcd *hcd, int op) | |
10 | { | |
11 | const struct device *ctrlr = hcd_to_bus(hcd)->controller; | |
12 | struct physdev_dbgp_op dbgp; | |
13 | ||
14 | if (!xen_initial_domain()) | |
15 | return 0; | |
16 | ||
17 | dbgp.op = op; | |
18 | ||
19 | #ifdef CONFIG_PCI | |
20 | if (ctrlr->bus == &pci_bus_type) { | |
21 | const struct pci_dev *pdev = to_pci_dev(ctrlr); | |
22 | ||
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; | |
27 | } else | |
28 | #endif | |
29 | dbgp.bus = PHYSDEVOP_DBGP_BUS_UNKNOWN; | |
30 | ||
31 | return HYPERVISOR_physdev_op(PHYSDEVOP_dbgp_op, &dbgp); | |
32 | } | |
33 | ||
34 | int xen_dbgp_reset_prep(struct usb_hcd *hcd) | |
35 | { | |
36 | return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_PREPARE); | |
37 | } | |
38 | ||
39 | int xen_dbgp_external_startup(struct usb_hcd *hcd) | |
40 | { | |
41 | return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_DONE); | |
42 | } | |
43 | ||
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); | |
48 | #endif |