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
  17 void *xlate_dev_mem_ptr(phys_addr_t phys);
  18 #define unxlate_dev_mem_ptr unxlate_dev_mem_ptr
  19 void 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 #define ioremap_wt                      ioremap_nocache
  33
  34 static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
  35 {
  36         return (void __iomem *) offset;
  37 }
  38
  39 static inline void iounmap(volatile void __iomem *addr)
  40 {
  41 }
  42
  43 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
  44 {
  45         return NULL;
  46 }
  47
  48 static inline void ioport_unmap(void __iomem *p)
  49 {
  50 }
  51
  52 /*
  53  * s390 needs a private implementation of pci_iomap since ioremap with its
  54  * offset parameter isn't sufficient. That's because BAR spaces are not
  55  * disjunctive on s390 so we need the bar parameter of pci_iomap to find
  56  * the corresponding device and create the mapping cookie.
  57  */
  58 #define pci_iomap pci_iomap
  59 #define pci_iounmap pci_iounmap
  60
  61 #define memcpy_fromio(dst, src, count)  zpci_memcpy_fromio(dst, src, count)
  62 #define memcpy_toio(dst, src, count)    zpci_memcpy_toio(dst, src, count)
  63 #define memset_io(dst, val, count)      zpci_memset_io(dst, val, count)
  64
  65 #define __raw_readb     zpci_read_u8
  66 #define __raw_readw     zpci_read_u16
  67 #define __raw_readl     zpci_read_u32
  68 #define __raw_readq     zpci_read_u64
  69 #define __raw_writeb    zpci_write_u8
  70 #define __raw_writew    zpci_write_u16
  71 #define __raw_writel    zpci_write_u32
  72 #define __raw_writeq    zpci_write_u64
  73
  74 #endif /* CONFIG_PCI */
  75
  76 #include <asm-generic/io.h>
  77
  78 #endif