rwhandler.h

   1 #ifndef READ_WRITE_HANDLER_H
   2 #define READ_WRITE_HANDLER_H
   3
   4 #include "qemu-common.h"
   5 #include "ioport.h"
   6
   7 typedef struct ReadWriteHandler ReadWriteHandler;
   8
   9 /* len is guaranteed to be one of 1, 2 or 4, addr is guaranteed to fit in an
  10  * appropriate type (io/memory/etc). They do not need to be range checked. */
  11 typedef void WriteHandlerFunc(ReadWriteHandler *, pcibus_t addr,
  12                               uint32_t value, int len);
  13 typedef uint32_t ReadHandlerFunc(ReadWriteHandler *, pcibus_t addr, int len);
  14
  15 struct ReadWriteHandler {
  16     WriteHandlerFunc *write;
  17     ReadHandlerFunc *read;
  18 };
  19
  20 /* Helpers for when we want to use a single routine with length. */
  21 /* CPU memory handler: both read and write must be present. */
  22 int cpu_register_io_memory_simple(ReadWriteHandler *);
  23 /* io port handler: can supply only read or write handlers. */
  24 int register_ioport_simple(ReadWriteHandler *,
  25                            pio_addr_t start, int length, int size);
  26
  27 #endif