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