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/*
  24 * Convert a virtual cached pointer to an uncached pointer
  25 */
  26#define xlate_dev_kmem_ptr(p)   p
  27
  28#define IO_SPACE_LIMIT 0
  29
  30void __iomem *ioremap_prot(phys_addr_t addr, size_t size, unsigned long prot);
  31void __iomem *ioremap(phys_addr_t addr, size_t size);
  32void __iomem *ioremap_wc(phys_addr_t addr, size_t size);
  33void __iomem *ioremap_wt(phys_addr_t addr, size_t size);
  34void iounmap(volatile void __iomem *addr);
  35
  36static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
  37{
  38        return NULL;
  39}
  40
  41static inline void ioport_unmap(void __iomem *p)
  42{
  43}
  44
  45#ifdef CONFIG_PCI
  46
  47/*
  48 * s390 needs a private implementation of pci_iomap since ioremap with its
  49 * offset parameter isn't sufficient. That's because BAR spaces are not
  50 * disjunctive on s390 so we need the bar parameter of pci_iomap to find
  51 * the corresponding device and create the mapping cookie.
  52 */
  53#define pci_iomap pci_iomap
  54#define pci_iomap_range pci_iomap_range
  55#define pci_iounmap pci_iounmap
  56#define pci_iomap_wc pci_iomap_wc
  57#define pci_iomap_wc_range pci_iomap_wc_range
  58
  59#define ioremap ioremap
  60#define ioremap_wt ioremap_wt
  61#define ioremap_wc ioremap_wc
  62
  63#define memcpy_fromio(dst, src, count)  zpci_memcpy_fromio(dst, src, count)
  64#define memcpy_toio(dst, src, count)    zpci_memcpy_toio(dst, src, count)
  65#define memset_io(dst, val, count)      zpci_memset_io(dst, val, count)
  66
  67#define mmiowb()        zpci_barrier()
  68
  69#define __raw_readb     zpci_read_u8
  70#define __raw_readw     zpci_read_u16
  71#define __raw_readl     zpci_read_u32
  72#define __raw_readq     zpci_read_u64
  73#define __raw_writeb    zpci_write_u8
  74#define __raw_writew    zpci_write_u16
  75#define __raw_writel    zpci_write_u32
  76#define __raw_writeq    zpci_write_u64
  77
  78#endif /* CONFIG_PCI */
  79
  80#include <asm-generic/io.h>
  81
  82#endif
  83