LXR linux/arch/s390/include/asm/io.h

   1/*
   2 *  S390 version
   3 *    Copyright IBM Corp. 1999
   4 *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
   5 *
   6 *  Derived from "include/asm-i386/io.h"
   7 */
   8
   9#ifndef _S390_IO_H
  10#define _S390_IO_H
  11
  12#include <linux/kernel.h>
  13#include <asm/page.h>
  14#include <asm/pci_io.h>
  15
  16#define xlate_dev_mem_ptr xlate_dev_mem_ptr
  17void *xlate_dev_mem_ptr(phys_addr_t phys);
  18#define unxlate_dev_mem_ptr unxlate_dev_mem_ptr
  19void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr);
  20
  21/*
  22 * Convert a virtual cached pointer to an uncached pointer
  23 */
  24#define xlate_dev_kmem_ptr(p)   p
  25
  26#define IO_SPACE_LIMIT 0
  27
  28#ifdef CONFIG_PCI
  29
  30#define ioremap_nocache(addr, size)     ioremap(addr, size)
  31#define ioremap_wc                      ioremap_nocache
  32
  33static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
  34{
  35        return (void __iomem *) offset;
  36}
  37
  38static inline void iounmap(volatile void __iomem *addr)
  39{
  40}
  41
  42static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
  43{
  44        return NULL;
  45}
  46
  47static inline void ioport_unmap(void __iomem *p)
  48{
  49}
  50
  51/*
  52 * s390 needs a private implementation of pci_iomap since ioremap with its
  53 * offset parameter isn't sufficient. That's because BAR spaces are not
  54 * disjunctive on s390 so we need the bar parameter of pci_iomap to find
  55 * the corresponding device and create the mapping cookie.
  56 */
  57#define pci_iomap pci_iomap
  58#define pci_iounmap pci_iounmap
  59
  60#define memcpy_fromio(dst, src, count)  zpci_memcpy_fromio(dst, src, count)
  61#define memcpy_toio(dst, src, count)    zpci_memcpy_toio(dst, src, count)
  62#define memset_io(dst, val, count)      zpci_memset_io(dst, val, count)
  63
  64#define __raw_readb     zpci_read_u8
  65#define __raw_readw     zpci_read_u16
  66#define __raw_readl     zpci_read_u32
  67#define __raw_readq     zpci_read_u64
  68#define __raw_writeb    zpci_write_u8
  69#define __raw_writew    zpci_write_u16
  70#define __raw_writel    zpci_write_u32
  71#define __raw_writeq    zpci_write_u64
  72
  73#endif /* CONFIG_PCI */
  74
  75#include <asm-generic/io.h>
  76
  77#endif
  78