LXR linux/arch/arm/mm/iomap.c

   1/*
   2 *  linux/arch/arm/mm/iomap.c
   3 *
   4 * Map IO port and PCI memory spaces so that {read,write}[bwl] can
   5 * be used to access this memory.
   6 */
   7#include <linux/module.h>
   8#include <linux/pci.h>
   9#include <linux/ioport.h>
  10#include <linux/io.h>
  11
  12unsigned long vga_base;
  13EXPORT_SYMBOL(vga_base);
  14
  15#ifdef __io
  16void __iomem *ioport_map(unsigned long port, unsigned int nr)
  17{
  18        return __io(port);
  19}
  20EXPORT_SYMBOL(ioport_map);
  21
  22void ioport_unmap(void __iomem *addr)
  23{
  24}
  25EXPORT_SYMBOL(ioport_unmap);
  26#endif
  27
  28#ifdef CONFIG_PCI
  29unsigned long pcibios_min_io = 0x1000;
  30EXPORT_SYMBOL(pcibios_min_io);
  31
  32unsigned long pcibios_min_mem = 0x01000000;
  33EXPORT_SYMBOL(pcibios_min_mem);
  34
  35void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
  36{
  37        if ((unsigned long)addr >= VMALLOC_START &&
  38            (unsigned long)addr < VMALLOC_END)
  39                iounmap(addr);
  40}
  41EXPORT_SYMBOL(pci_iounmap);
  42#endif
  43