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
  18 void *xlate_dev_mem_ptr(phys_addr_t phys);
  19 #define unxlate_dev_mem_ptr unxlate_dev_mem_ptr
  20 void 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 void __iomem *ioremap(unsigned long offset, unsigned long size);
  30 void iounmap(volatile void __iomem *addr);
  31
  32 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
  33 {
  34         return NULL;
  35 }
  36
  37 static 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