blob: c1a8d8f941fdb7d6b11c67007adeb38357ec63e2 [file] [log] [blame]
/* ASB2305 PCI I/O mapping handler
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
#include <linux/pci.h>
#include <linux/module.h>
* Create a virtual mapping cookie for a PCI BAR (memory or IO)
void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
resource_size_t start = pci_resource_start(dev, bar);
resource_size_t len = pci_resource_len(dev, bar);
unsigned long flags = pci_resource_flags(dev, bar);
if (!len || !start)
return NULL;
if ((flags & IORESOURCE_IO) || (flags & IORESOURCE_MEM))
return (void __iomem *) start;
return NULL;