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

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 *  S390 version
   4 *    Copyright IBM Corp. 1999
   5 *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
   6 *
   7 *  Derived from "include/asm-i386/io.h"
   8 */
   9
  10#ifndef _S390_IO_H
  11#define _S390_IO_H
  12
  13#include <linux/kernel.h>
  14#include <asm/page.h>
  15#include <asm/pci_io.h>
  16
  17#define xlate_dev_mem_ptr xlate_dev_mem_ptr
  18void *xlate_dev_mem_ptr(phys_addr_t phys);
  19#define unxlate_dev_mem_ptr unxlate_dev_mem_ptr
  20void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr);
  21
  22/*
  23 * Convert a virtual cached pointer to an uncached pointer
  24 */
  25#define xlate_dev_kmem_ptr(p)   p
  26
  27#define IO_SPACE_LIMIT 0
  28
  29#define ioremap_nocache(addr, size)     ioremap(addr, size)
  30#define ioremap_wc                      ioremap_nocache
  31#define ioremap_wt                      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#ifdef CONFIG_PCI
  52
  53/*
  54 * s390 needs a private implementation of pci_iomap since ioremap with its
  55 * offset parameter isn't sufficient. That's because BAR spaces are not
  56 * disjunctive on s390 so we need the bar parameter of pci_iomap to find
  57 * the corresponding device and create the mapping cookie.
  58 */
  59#define pci_iomap pci_iomap
  60#define pci_iounmap pci_iounmap
  61#define pci_iomap_wc pci_iomap
  62#define pci_iomap_wc_range pci_iomap_range
  63
  64#define memcpy_fromio(dst, src, count)  zpci_memcpy_fromio(dst, src, count)
  65#define memcpy_toio(dst, src, count)    zpci_memcpy_toio(dst, src, count)
  66#define memset_io(dst, val, count)      zpci_memset_io(dst, val, count)
  67
  68#define __raw_readb     zpci_read_u8
  69#define __raw_readw     zpci_read_u16
  70#define __raw_readl     zpci_read_u32
  71#define __raw_readq     zpci_read_u64
  72#define __raw_writeb    zpci_write_u8
  73#define __raw_writew    zpci_write_u16
  74#define __raw_writel    zpci_write_u32
  75#define __raw_writeq    zpci_write_u64
  76
  77#endif /* CONFIG_PCI */
  78
  79#include <asm-generic/io.h>
  80
  81#endif
  82