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
  30 typedef 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
  42 extern const MemoryRegionOps unassigned_io_ops;
  43 #endif
  44
  45 void cpu_outb(uint32_t addr, uint8_t val);
  46 void cpu_outw(uint32_t addr, uint16_t val);
  47 void cpu_outl(uint32_t addr, uint32_t val);
  48 uint8_t cpu_inb(uint32_t addr);
  49 uint16_t cpu_inw(uint32_t addr);
  50 uint32_t cpu_inl(uint32_t addr);
  51
  52 typedef 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
  63 void portio_list_init(PortioList *piolist, Object *owner,
  64                       const struct MemoryRegionPortio *callbacks,
  65                       void *opaque, const char *name);
  66 void portio_list_set_flush_coalesced(PortioList *piolist);
  67 void portio_list_destroy(PortioList *piolist);
  68 void portio_list_add(PortioList *piolist,
  69                      struct MemoryRegion *address_space,
  70                      uint32_t addr);
  71 void portio_list_del(PortioList *piolist);
  72
  73 #endif /* IOPORT_H */