| 1 | |
| 2 | #include <linux/pci.h>
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| 3 | #include <linux/usb.h>
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| 4 | #include <linux/usb/ehci_def.h>
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| 5 | #include <linux/usb/hcd.h>
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| 6 | #include <asm/xen/hypercall.h>
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| 7 | #include <xen/interface/physdev.h>
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| 8 | #include <xen/xen.h>
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| 9 |
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| 10 | static int xen_dbgp_op(struct usb_hcd *hcd, int op)
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| 11 | {
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| 12 | #ifdef CONFIG_PCI
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| 13 | const struct device *ctrlr = hcd_to_bus(hcd)->controller;
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| 14 | #endif
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| 15 | struct physdev_dbgp_op dbgp;
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| 16 |
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| 17 | if (!xen_initial_domain())
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| 18 | return 0;
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| 19 |
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| 20 | dbgp.op = op;
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| 21 |
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| 22 | #ifdef CONFIG_PCI
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| 23 | if (dev_is_pci(ctrlr)) {
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| 24 | const struct pci_dev *pdev = to_pci_dev(ctrlr);
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| 25 |
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| 26 | dbgp.u.pci.seg = pci_domain_nr(pdev->bus);
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| 27 | dbgp.u.pci.bus = pdev->bus->number;
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| 28 | dbgp.u.pci.devfn = pdev->devfn;
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| 29 | dbgp.bus = PHYSDEVOP_DBGP_BUS_PCI;
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| 30 | } else
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| 31 | #endif
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| 32 | dbgp.bus = PHYSDEVOP_DBGP_BUS_UNKNOWN;
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| 33 |
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| 34 | return HYPERVISOR_physdev_op(PHYSDEVOP_dbgp_op, &dbgp);
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| 35 | }
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| 36 |
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| 37 | int xen_dbgp_reset_prep(struct usb_hcd *hcd)
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| 38 | {
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| 39 | return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_PREPARE);
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| 40 | }
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| 41 |
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| 42 | int xen_dbgp_external_startup(struct usb_hcd *hcd)
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| 43 | {
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| 44 | return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_DONE);
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| 45 | }
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| 46 |
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| 47 | #ifndef CONFIG_EARLY_PRINTK_DBGP
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| 48 | #include <linux/export.h>
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| 49 | EXPORT_SYMBOL_GPL(xen_dbgp_reset_prep);
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| 50 | EXPORT_SYMBOL_GPL(xen_dbgp_external_startup);
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| 51 | #endif
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