xinyangli
2824efad33
NJU-ProjectN/nemu eb63cf3568dbf4e0c3c6ef462e6ec685550fabbc Merge pull request #76 from rijuyuezhu/master
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/***************************************************************************************
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* Copyright (c) 2014-2022 Zihao Yu, Nanjing University
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*
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* NEMU is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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*
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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*
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* See the Mulan PSL v2 for more details.
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***************************************************************************************/
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#ifndef __DEVICE_MAP_H__
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#define __DEVICE_MAP_H__
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#include <cpu/difftest.h>
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typedef void(*io_callback_t)(uint32_t, int, bool);
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uint8_t* new_space(int size);
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typedef struct {
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const char *name;
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// we treat ioaddr_t as paddr_t here
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paddr_t low;
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paddr_t high;
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void *space;
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io_callback_t callback;
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} IOMap;
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static inline bool map_inside(IOMap *map, paddr_t addr) {
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return (addr >= map->low && addr <= map->high);
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}
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static inline int find_mapid_by_addr(IOMap *maps, int size, paddr_t addr) {
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int i;
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for (i = 0; i < size; i ++) {
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if (map_inside(maps + i, addr)) {
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difftest_skip_ref();
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return i;
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}
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}
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return -1;
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}
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void add_pio_map(const char *name, ioaddr_t addr,
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void *space, uint32_t len, io_callback_t callback);
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void add_mmio_map(const char *name, paddr_t addr,
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void *space, uint32_t len, io_callback_t callback);
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word_t map_read(paddr_t addr, int len, IOMap *map);
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void map_write(paddr_t addr, int len, word_t data, IOMap *map);
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#endif
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