ysyx-workbench/nemu/include/device/map.h

/***************************************************************************************
* Copyright (c) 2014-2022 Zihao Yu, Nanjing University
*
* NEMU is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
*          http://license.coscl.org.cn/MulanPSL2
*
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
*
* See the Mulan PSL v2 for more details.
***************************************************************************************/

#ifndef __DEVICE_MAP_H__
#define __DEVICE_MAP_H__

#include <difftest.h>
#include <stdbool.h>
#include <types.h>

typedef void (*io_callback_t)(uint32_t, int, bool);
uint8_t *new_space(int size);

typedef struct {
  const char *name;
  // we treat ioaddr_t as paddr_t here
  paddr_t low;
  paddr_t high;
  void *space;
  io_callback_t callback;
} IOMap;

static inline bool map_inside(IOMap *map, paddr_t addr) {
  return (addr >= map->low && addr <= map->high);
}

static inline int find_mapid_by_addr(IOMap *maps, int size, paddr_t addr) {
  int i;
  for (i = 0; i < size; i++) {
    if (map_inside(maps + i, addr)) {
      nemu_do_difftest = false;
      return i;
    }
  }
  return -1;
}

void add_pio_map(const char *name, ioaddr_t addr, void *space, uint32_t len,
                 io_callback_t callback);
void add_mmio_map(const char *name, paddr_t addr, void *space, uint32_t len,
                  io_callback_t callback);

word_t map_read(paddr_t addr, int len, IOMap *map);
void map_write(paddr_t addr, int len, word_t data, IOMap *map);

#endif