2 * iomap.c, Memory Mapped I/O routines for MIPS architecture.
4 * This code is based on lib/iomap.c, by Linus Torvalds.
6 * Copyright (C) 2004-2005 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include <linux/ioport.h>
23 #include <linux/module.h>
24 #include <linux/pci.h>
28 void __iomem *ioport_map(unsigned long port, unsigned int nr)
32 end = port + nr - 1UL;
33 if (ioport_resource.start > port ||
34 ioport_resource.end < end || port > end)
37 return (void __iomem *)(mips_io_port_base + port);
40 void ioport_unmap(void __iomem *addr)
43 EXPORT_SYMBOL(ioport_map);
44 EXPORT_SYMBOL(ioport_unmap);
46 void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
48 unsigned long start, len, flags;
53 start = pci_resource_start(dev, bar);
54 len = pci_resource_len(dev, bar);
58 if (maxlen != 0 && len > maxlen)
61 flags = pci_resource_flags(dev, bar);
62 if (flags & IORESOURCE_IO)
63 return ioport_map(start, len);
64 if (flags & IORESOURCE_MEM) {
65 if (flags & IORESOURCE_CACHEABLE)
66 return ioremap_cachable(start, len);
67 return ioremap_nocache(start, len);
73 void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
77 EXPORT_SYMBOL(pci_iomap);
78 EXPORT_SYMBOL(pci_iounmap);