xinyangli
2824efad33
NJU-ProjectN/nemu eb63cf3568dbf4e0c3c6ef462e6ec685550fabbc Merge pull request #76 from rijuyuezhu/master
47 lines
1.5 KiB
C
47 lines
1.5 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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#include <common.h>
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#include <device/map.h>
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#include <SDL2/SDL.h>
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enum {
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reg_freq,
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reg_channels,
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reg_samples,
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reg_sbuf_size,
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reg_init,
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reg_count,
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nr_reg
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};
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static uint8_t *sbuf = NULL;
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static uint32_t *audio_base = NULL;
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static void audio_io_handler(uint32_t offset, int len, bool is_write) {
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}
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void init_audio() {
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uint32_t space_size = sizeof(uint32_t) * nr_reg;
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audio_base = (uint32_t *)new_space(space_size);
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#ifdef CONFIG_HAS_PORT_IO
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add_pio_map ("audio", CONFIG_AUDIO_CTL_PORT, audio_base, space_size, audio_io_handler);
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#else
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add_mmio_map("audio", CONFIG_AUDIO_CTL_MMIO, audio_base, space_size, audio_io_handler);
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#endif
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sbuf = (uint8_t *)new_space(CONFIG_SB_SIZE);
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add_mmio_map("audio-sbuf", CONFIG_SB_ADDR, sbuf, CONFIG_SB_SIZE, NULL);
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}
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