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/pgtable.h>
  16#include <asm/pci_io.h>
  17
  18#define xlate_dev_mem_ptr xlate_dev_mem_ptr
  19void *xlate_dev_mem_ptr(phys_addr_t phys);
  20#define unxlate_dev_mem_ptr unxlate_dev_mem_ptr
  21void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr);
  22
  23#define IO_SPACE_LIMIT 0
  24
  25void __iomem *ioremap_prot(phys_addr_t addr, size_t size, unsigned long prot);
  26void __iomem *ioremap(phys_addr_t addr, size_t size);
  27void __iomem *ioremap_wc(phys_addr_t addr, size_t size);
  28void __iomem *ioremap_wt(phys_addr_t addr, size_t size);
  29void iounmap(volatile void __iomem *addr);
  30
  31static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
  32{
  33        return NULL;
  34}
  35
  36static inline void ioport_unmap(void __iomem *p)
  37{
  38}
  39
  40#ifdef CONFIG_PCI
  41
  42/*
  43 * s390 needs a private implementation of pci_iomap since ioremap with its
  44 * offset parameter isn't sufficient. That's because BAR spaces are not
  45 * disjunctive on s390 so we need the bar parameter of pci_iomap to find
  46 * the corresponding device and create the mapping cookie.
  47 */
  48#define pci_iomap pci_iomap
  49#define pci_iomap_range pci_iomap_range
  50#define pci_iounmap pci_iounmap
  51#define pci_iomap_wc pci_iomap_wc
  52#define pci_iomap_wc_range pci_iomap_wc_range
  53
  54#define ioremap ioremap
  55#define ioremap_wt ioremap_wt
  56#define ioremap_wc ioremap_wc
  57
  58#define memcpy_fromio(dst, src, count)  zpci_memcpy_fromio(dst, src, count)
  59#define memcpy_toio(dst, src, count)    zpci_memcpy_toio(dst, src, count)
  60#define memset_io(dst, val, count)      zpci_memset_io(dst, val, count)
  61
  62#define mmiowb()        zpci_barrier()
  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