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
  33 static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
  34 {
  35         return (void __iomem *) offset;
  36 }
  37
  38 static inline void iounmap(volatile void __iomem *addr)
  39 {
  40 }
  41
  42 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
  43 {
  44         return NULL;
  45 }
  46
  47 static 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