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 #include "qemu-common.h"
  28 #include "qom/object.h"
  29 #include "exec/memory.h"
  30
  31 typedef uint32_t pio_addr_t;
  32 #define FMT_pioaddr     PRIx32
  33
  34 #define MAX_IOPORTS     (64 * 1024)
  35 #define IOPORTS_MASK    (MAX_IOPORTS - 1)
  36
  37 typedef struct MemoryRegionPortio {
  38     uint32_t offset;
  39     uint32_t len;
  40     unsigned size;
  41     uint32_t (*read)(void *opaque, uint32_t address);
  42     void (*write)(void *opaque, uint32_t address, uint32_t data);
  43     uint32_t base; /* private field */
  44 } MemoryRegionPortio;
  45
  46 #define PORTIO_END_OF_LIST() { }
  47
  48 #ifndef CONFIG_USER_ONLY
  49 extern const MemoryRegionOps unassigned_io_ops;
  50 #endif
  51
  52 void cpu_outb(pio_addr_t addr, uint8_t val);
  53 void cpu_outw(pio_addr_t addr, uint16_t val);
  54 void cpu_outl(pio_addr_t addr, uint32_t val);
  55 uint8_t cpu_inb(pio_addr_t addr);
  56 uint16_t cpu_inw(pio_addr_t addr);
  57 uint32_t cpu_inl(pio_addr_t addr);
  58
  59 typedef struct PortioList {
  60     const struct MemoryRegionPortio *ports;
  61     Object *owner;
  62     struct MemoryRegion *address_space;
  63     unsigned nr;
  64     struct MemoryRegion **regions;
  65     void *opaque;
  66     const char *name;
  67     bool flush_coalesced_mmio;
  68 } PortioList;
  69
  70 void portio_list_init(PortioList *piolist, Object *owner,
  71                       const struct MemoryRegionPortio *callbacks,
  72                       void *opaque, const char *name);
  73 void portio_list_set_flush_coalesced(PortioList *piolist);
  74 void portio_list_destroy(PortioList *piolist);
  75 void portio_list_add(PortioList *piolist,
  76                      struct MemoryRegion *address_space,
  77                      uint32_t addr);
  78 void portio_list_del(PortioList *piolist);
  79
  80 #endif /* IOPORT_H */