blob: 9ef37e13a920e28ba99e197dc50dff7b812c5972 [file] [log] [blame]
David S. Miller749805d2006-06-25 23:24:24 -07001/*
2 * Implement the sparc iomap interfaces
3 */
4#include <linux/pci.h>
5#include <linux/module.h>
6#include <asm/io.h>
7
8/* Create a virtual mapping cookie for an IO port range */
9void __iomem *ioport_map(unsigned long port, unsigned int nr)
10{
11 return (void __iomem *) (unsigned long) port;
12}
13
14void ioport_unmap(void __iomem *addr)
15{
16 /* Nothing to do */
17}
18EXPORT_SYMBOL(ioport_map);
19EXPORT_SYMBOL(ioport_unmap);
20
21/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
22void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
23{
Benjamin Herrenschmidtb70d3a22008-04-29 00:59:11 -070024 resource_size_t start = pci_resource_start(dev, bar);
25 resource_size_t len = pci_resource_len(dev, bar);
David S. Miller749805d2006-06-25 23:24:24 -070026 unsigned long flags = pci_resource_flags(dev, bar);
27
28 if (!len || !start)
29 return NULL;
30 if (maxlen && len > maxlen)
31 len = maxlen;
32 if (flags & IORESOURCE_IO)
33 return ioport_map(start, len);
34 if (flags & IORESOURCE_MEM) {
35 if (flags & IORESOURCE_CACHEABLE)
36 return ioremap(start, len);
37 return ioremap_nocache(start, len);
38 }
39 /* What? */
40 return NULL;
41}
42
43void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
44{
45 /* nothing to do */
46}
47EXPORT_SYMBOL(pci_iomap);
48EXPORT_SYMBOL(pci_iounmap);