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 "iorange.h"
  29
  30 typedef uint32_t pio_addr_t;
  31 #define FMT_pioaddr     PRIx32
  32
  33 #define MAX_IOPORTS     (64 * 1024)
  34 #define IOPORTS_MASK    (MAX_IOPORTS - 1)
  35
  36 /* These should really be in isa.h, but are here to make pc.h happy.  */
  37 typedef void (IOPortWriteFunc)(void *opaque, uint32_t address, uint32_t data);
  38 typedef uint32_t (IOPortReadFunc)(void *opaque, uint32_t address);
  39 typedef void (IOPortDestructor)(void *opaque);
  40
  41 void ioport_register(IORange *iorange);
  42 int register_ioport_read(pio_addr_t start, int length, int size,
  43                          IOPortReadFunc *func, void *opaque);
  44 int register_ioport_write(pio_addr_t start, int length, int size,
  45                           IOPortWriteFunc *func, void *opaque);
  46 void isa_unassign_ioport(pio_addr_t start, int length);
  47 bool isa_is_ioport_assigned(pio_addr_t start);
  48
  49 void cpu_outb(pio_addr_t addr, uint8_t val);
  50 void cpu_outw(pio_addr_t addr, uint16_t val);
  51 void cpu_outl(pio_addr_t addr, uint32_t val);
  52 uint8_t cpu_inb(pio_addr_t addr);
  53 uint16_t cpu_inw(pio_addr_t addr);
  54 uint32_t cpu_inl(pio_addr_t addr);
  55
  56 struct MemoryRegion;
  57 struct MemoryRegionPortio;
  58
  59 typedef struct PortioList {
  60     const struct MemoryRegionPortio *ports;
  61     struct MemoryRegion *address_space;
  62     unsigned nr;
  63     struct MemoryRegion **regions;
  64     struct MemoryRegion **aliases;
  65     void *opaque;
  66     const char *name;
  67 } PortioList;
  68
  69 void portio_list_init(PortioList *piolist,
  70                       const struct MemoryRegionPortio *callbacks,
  71                       void *opaque, const char *name);
  72 void portio_list_destroy(PortioList *piolist);
  73 void portio_list_add(PortioList *piolist,
  74                      struct MemoryRegion *address_space,
  75                      uint32_t addr);
  76 void portio_list_del(PortioList *piolist);
  77
  78 #endif /* IOPORT_H */