1 /* 2 * Implement the default iomap interfaces 3 * 4 * (C) Copyright 2004 Linus Torvalds 5 * (C) Copyright 2006 Ralf Baechle <ralf@linux-mips.org> 6 * (C) Copyright 2007 MIPS Technologies, Inc. 7 * written by Ralf Baechle <ralf@linux-mips.org> 8 */ 9 #include <linux/pci.h> 10 #include <linux/module.h> 11 #include <asm/io.h> 12 13 void __iomem *__pci_ioport_map(struct pci_dev *dev, 14 unsigned long port, unsigned int nr) 15 { 16 struct pci_controller *ctrl = dev->bus->sysdata; 17 unsigned long base = ctrl->io_map_base; 18 19 /* This will eventually become a BUG_ON but for now be gentle */ 20 if (unlikely(!ctrl->io_map_base)) { 21 struct pci_bus *bus = dev->bus; 22 char name[8]; 23 24 while (bus->parent) 25 bus = bus->parent; 26 27 ctrl->io_map_base = base = mips_io_port_base; 28 29 sprintf(name, "%04x:%02x", pci_domain_nr(bus), bus->number); 30 printk(KERN_WARNING "io_map_base of root PCI bus %s unset. " 31 "Trying to continue but you better\nfix this issue or " 32 "report it to linux-mips@linux-mips.org or your " 33 "vendor.\n", name); 34 #ifdef CONFIG_PCI_DOMAINS 35 panic("To avoid data corruption io_map_base MUST be set with " 36 "multiple PCI domains."); 37 #endif 38 } 39 40 return (void __iomem *) (ctrl->io_map_base + port); 41 } 42 43 void pci_iounmap(struct pci_dev *dev, void __iomem * addr) 44 { 45 iounmap(addr); 46 } 47 48 EXPORT_SYMBOL(pci_iounmap); 49