dingusppc/devices/dmacore.h
2021-10-05 00:29:27 +02:00

42 lines
1.3 KiB
C++

/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-21 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/** @file Core definitions for direct memory access (DMA) emulation. */
#ifndef DMA_CORE_H
#define DMA_CORE_H
#include <cinttypes>
enum DmaPullResult : int {
MoreData, // data source has more data to be pulled
NoMoreData, // data source has no more data to be pulled
};
class DmaOutChannel {
public:
virtual bool is_active() = 0;
virtual DmaPullResult pull_data(uint32_t req_len, uint32_t *avail_len,
uint8_t **p_data) = 0;
};
#endif // DMA_CORE_H