arch/microblaze/pci/iomap.c

   1 /*
   2  * ppc64 "iomap" interface implementation.
   3  *
   4  * (C) Copyright 2004 Linus Torvalds
   5  */
   6 #include <linux/init.h>
   7 #include <linux/pci.h>
   8 #include <linux/mm.h>
   9 #include <linux/export.h>
  10 #include <asm/io.h>
  11 #include <asm/pci-bridge.h>
  12
  13 void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
  14 {
  15         resource_size_t start = pci_resource_start(dev, bar);
  16         resource_size_t len = pci_resource_len(dev, bar);
  17         unsigned long flags = pci_resource_flags(dev, bar);
  18
  19         if (!len)
  20                 return NULL;
  21         if (max && len > max)
  22                 len = max;
  23         if (flags & IORESOURCE_IO)
  24                 return ioport_map(start, len);
  25         if (flags & IORESOURCE_MEM)
  26                 return ioremap(start, len);
  27         /* What? */
  28         return NULL;
  29 }
  30 EXPORT_SYMBOL(pci_iomap);
  31
  32 void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
  33 {
  34         if (isa_vaddr_is_ioport(addr))
  35                 return;
  36         if (pcibios_vaddr_is_ioport(addr))
  37                 return;
  38         iounmap(addr);
  39 }
  40 EXPORT_SYMBOL(pci_iounmap);