arch/powerpc/kernel/iomap.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * ppc64 "iomap" interface implementation.
   4  *
   5  * (C) Copyright 2004 Linus Torvalds
   6  */
   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 #include <asm/isa-bridge.h>
  13
  14 void __iomem *ioport_map(unsigned long port, unsigned int len)
  15 {
  16         return (void __iomem *) (port + _IO_BASE);
  17 }
  18 EXPORT_SYMBOL(ioport_map);
  19
  20 #ifdef CONFIG_PCI
  21 void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
  22 {
  23         if (isa_vaddr_is_ioport(addr))
  24                 return;
  25         if (pcibios_vaddr_is_ioport(addr))
  26                 return;
  27         iounmap(addr);
  28 }
  29
  30 EXPORT_SYMBOL(pci_iounmap);
  31 #endif /* CONFIG_PCI */