LXR qemu/include/exec/ioport.h

   1/*
   2 * defines ioport related functions
   3 *
   4 *  Copyright (c) 2003 Fabrice Bellard
   5 *
   6 * This library is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU Lesser General Public
   8 * License as published by the Free Software Foundation; either
   9 * version 2 of the License, or (at your option) any later version.
  10 *
  11 * This library is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 * Lesser General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU Lesser General Public
  17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20/**************************************************************************
  21 * IO ports API
  22 */
  23
  24#ifndef IOPORT_H
  25#define IOPORT_H
  26
  27#define MAX_IOPORTS     (64 * 1024)
  28#define IOPORTS_MASK    (MAX_IOPORTS - 1)
  29
  30typedef struct MemoryRegionPortio {
  31    uint32_t offset;
  32    uint32_t len;
  33    unsigned size;
  34    uint32_t (*read)(void *opaque, uint32_t address);
  35    void (*write)(void *opaque, uint32_t address, uint32_t data);
  36    uint32_t base; /* private field */
  37} MemoryRegionPortio;
  38
  39#define PORTIO_END_OF_LIST() { }
  40
  41#ifndef CONFIG_USER_ONLY
  42extern const MemoryRegionOps unassigned_io_ops;
  43#endif
  44
  45void cpu_outb(uint32_t addr, uint8_t val);
  46void cpu_outw(uint32_t addr, uint16_t val);
  47void cpu_outl(uint32_t addr, uint32_t val);
  48uint8_t cpu_inb(uint32_t addr);
  49uint16_t cpu_inw(uint32_t addr);
  50uint32_t cpu_inl(uint32_t addr);
  51
  52typedef struct PortioList {
  53    const struct MemoryRegionPortio *ports;
  54    Object *owner;
  55    struct MemoryRegion *address_space;
  56    unsigned nr;
  57    struct MemoryRegion **regions;
  58    void *opaque;
  59    const char *name;
  60    bool flush_coalesced_mmio;
  61} PortioList;
  62
  63void portio_list_init(PortioList *piolist, Object *owner,
  64                      const struct MemoryRegionPortio *callbacks,
  65                      void *opaque, const char *name);
  66void portio_list_set_flush_coalesced(PortioList *piolist);
  67void portio_list_destroy(PortioList *piolist);
  68void portio_list_add(PortioList *piolist,
  69                     struct MemoryRegion *address_space,
  70                     uint32_t addr);
  71void portio_list_del(PortioList *piolist);
  72
  73#endif /* IOPORT_H */
  74