Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #include <linux/usb/ehci_def.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <linux/usb/hcd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <asm/xen/hypercall.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <xen/interface/physdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <xen/xen.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) static int xen_dbgp_op(struct usb_hcd *hcd, int op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #ifdef CONFIG_PCI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	const struct device *ctrlr = hcd_to_bus(hcd)->controller;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	struct physdev_dbgp_op dbgp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	if (!xen_initial_domain())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	dbgp.op = op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #ifdef CONFIG_PCI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	if (dev_is_pci(ctrlr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		const struct pci_dev *pdev = to_pci_dev(ctrlr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		dbgp.u.pci.seg = pci_domain_nr(pdev->bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		dbgp.u.pci.bus = pdev->bus->number;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		dbgp.u.pci.devfn = pdev->devfn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		dbgp.bus = PHYSDEVOP_DBGP_BUS_PCI;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	} else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		dbgp.bus = PHYSDEVOP_DBGP_BUS_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	return HYPERVISOR_physdev_op(PHYSDEVOP_dbgp_op, &dbgp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) int xen_dbgp_reset_prep(struct usb_hcd *hcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_PREPARE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) int xen_dbgp_external_startup(struct usb_hcd *hcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	return xen_dbgp_op(hcd, PHYSDEVOP_DBGP_RESET_DONE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #ifndef CONFIG_EARLY_PRINTK_DBGP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) EXPORT_SYMBOL_GPL(xen_dbgp_reset_prep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) EXPORT_SYMBOL_GPL(xen_dbgp_external_startup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #endif