Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Implement the default iomap interfaces
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * (C) Copyright 2004 Linus Torvalds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * (C) Copyright 2006 Ralf Baechle <ralf@linux-mips.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * (C) Copyright 2007 MIPS Technologies, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *     written by Ralf Baechle <ralf@linux-mips.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #ifdef CONFIG_PCI_DRIVERS_LEGACY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) void __iomem *__pci_ioport_map(struct pci_dev *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 			       unsigned long port, unsigned int nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	struct pci_controller *ctrl = dev->bus->sysdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	unsigned long base = ctrl->io_map_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	/* This will eventually become a BUG_ON but for now be gentle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	if (unlikely(!ctrl->io_map_base)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		struct pci_bus *bus = dev->bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		char name[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		while (bus->parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 			bus = bus->parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		ctrl->io_map_base = base = mips_io_port_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		sprintf(name, "%04x:%02x", pci_domain_nr(bus), bus->number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		printk(KERN_WARNING "io_map_base of root PCI bus %s unset.  "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		       "Trying to continue but you better\nfix this issue or "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		       "report it to linux-mips@linux-mips.org or your "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		       "vendor.\n", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #ifdef CONFIG_PCI_DOMAINS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		panic("To avoid data corruption io_map_base MUST be set with "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		      "multiple PCI domains.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	return (void __iomem *) (ctrl->io_map_base + port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #endif /* CONFIG_PCI_DRIVERS_LEGACY */