blob: fd35daa45314a370b89f521e3ec401d39e5dfdc9 [file] [log] [blame]
Ralf Baechle140c1722006-12-07 15:35:43 +01001/*
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
Michael S. Tsirkin0f3b3952012-01-30 00:23:38 +020013void __iomem *__pci_ioport_map(struct pci_dev *dev,
14 unsigned long port, unsigned int nr)
Ralf Baechle140c1722006-12-07 15:35:43 +010015{
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
Ralf Baechle140c1722006-12-07 15:35:43 +010043void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
44{
45 iounmap(addr);
46}
47
48EXPORT_SYMBOL(pci_iounmap);