2 * linux/arch/arm/mm/iomap.c
4 * Map IO port and PCI memory spaces so that {read,write}[bwl] can
5 * be used to access this memory.
7 #include <linux/module.h>
9 #include <linux/ioport.h>
13 void __iomem *ioport_map(unsigned long port, unsigned int nr)
17 EXPORT_SYMBOL(ioport_map);
19 void ioport_unmap(void __iomem *addr)
22 EXPORT_SYMBOL(ioport_unmap);
26 void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
28 resource_size_t start = pci_resource_start(dev, bar);
29 resource_size_t len = pci_resource_len(dev, bar);
30 unsigned long flags = pci_resource_flags(dev, bar);
34 if (maxlen && len > maxlen)
36 if (flags & IORESOURCE_IO)
37 return ioport_map(start, len);
38 if (flags & IORESOURCE_MEM) {
39 if (flags & IORESOURCE_CACHEABLE)
40 return ioremap(start, len);
41 return ioremap_nocache(start, len);
45 EXPORT_SYMBOL(pci_iomap);
47 void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
49 if ((unsigned long)addr >= VMALLOC_START &&
50 (unsigned long)addr < VMALLOC_END)
53 EXPORT_SYMBOL(pci_iounmap);