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 void *xlate_dev_mem_ptr(unsigned long phys);
  17 #define xlate_dev_mem_ptr xlate_dev_mem_ptr
  18 void unxlate_dev_mem_ptr(unsigned long phys, void *addr);
  19
  20 /*
  21  * Convert a virtual cached pointer to an uncached pointer
  22  */
  23 #define xlate_dev_kmem_ptr(p)   p
  24
  25 #define IO_SPACE_LIMIT 0
  26
  27 #ifdef CONFIG_PCI
  28
  29 #define ioremap_nocache(addr, size)     ioremap(addr, size)
  30 #define ioremap_wc                      ioremap_nocache
  31
  32 static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
  33 {
  34         return (void __iomem *) offset;
  35 }
  36
  37 static inline void iounmap(volatile void __iomem *addr)
  38 {
  39 }
  40
  41 /*
  42  * s390 needs a private implementation of pci_iomap since ioremap with its
  43  * offset parameter isn't sufficient. That's because BAR spaces are not
  44  * disjunctive on s390 so we need the bar parameter of pci_iomap to find
  45  * the corresponding device and create the mapping cookie.
  46  */
  47 #define pci_iomap pci_iomap
  48 #define pci_iounmap pci_iounmap
  49
  50 #define memcpy_fromio(dst, src, count)  zpci_memcpy_fromio(dst, src, count)
  51 #define memcpy_toio(dst, src, count)    zpci_memcpy_toio(dst, src, count)
  52 #define memset_io(dst, val, count)      zpci_memset_io(dst, val, count)
  53
  54 #define __raw_readb     zpci_read_u8
  55 #define __raw_readw     zpci_read_u16
  56 #define __raw_readl     zpci_read_u32
  57 #define __raw_readq     zpci_read_u64
  58 #define __raw_writeb    zpci_write_u8
  59 #define __raw_writew    zpci_write_u16
  60 #define __raw_writel    zpci_write_u32
  61 #define __raw_writeq    zpci_write_u64
  62
  63 #define readb_relaxed   readb
  64 #define readw_relaxed   readw
  65 #define readl_relaxed   readl
  66 #define readq_relaxed   readq
  67
  68 #endif /* CONFIG_PCI */
  69
  70 #include <asm-generic/io.h>
  71
  72 #endif