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

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 *  linux/arch/arm/mm/iomap.c
   4 *
   5 * Map IO port and PCI memory spaces so that {read,write}[bwl] can
   6 * be used to access this memory.
   7 */
   8#include <linux/module.h>
   9#include <linux/pci.h>
  10#include <linux/ioport.h>
  11#include <linux/io.h>
  12
  13#include <asm/vga.h>
  14
  15unsigned long vga_base;
  16EXPORT_SYMBOL(vga_base);
  17
  18#ifdef __io
  19void __iomem *ioport_map(unsigned long port, unsigned int nr)
  20{
  21        return __io(port);
  22}
  23EXPORT_SYMBOL(ioport_map);
  24
  25void ioport_unmap(void __iomem *addr)
  26{
  27}
  28EXPORT_SYMBOL(ioport_unmap);
  29#endif
  30
  31#ifdef CONFIG_PCI
  32unsigned long pcibios_min_io = 0x1000;
  33EXPORT_SYMBOL(pcibios_min_io);
  34
  35unsigned long pcibios_min_mem = 0x01000000;
  36EXPORT_SYMBOL(pcibios_min_mem);
  37
  38void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
  39{
  40        if ((unsigned long)addr >= VMALLOC_START &&
  41            (unsigned long)addr < VMALLOC_END)
  42                iounmap(addr);
  43}
  44EXPORT_SYMBOL(pci_iounmap);
  45#endif
  46