dingusppc/devices/common/hwinterrupt.h
2022-08-27 17:38:53 +02:00

55 lines
1.7 KiB
C++

/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-22 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/>.
*/
#ifndef HW_INTERRUPT_H
#define HW_INTERRUPT_H
#include <cinttypes>
//#define DEBUG_CPU_INT // uncomment this to enable hacks for debugging HW interrupts
/** Enumerator for various interrupt sources. */
enum IntSrc : int {
VIA_CUDA = 1,
SCSI1 = 2,
SWIM3 = 3,
SCC = 4,
ETHERNET = 5,
NMI = 6,
};
/** Base class for interrupt controllers. */
class InterruptCtrl {
public:
InterruptCtrl() = default;
virtual ~InterruptCtrl() = default;
// register interrupt sources for a device
virtual uint32_t register_dev_int(IntSrc src_id) = 0;
virtual uint32_t register_dma_int(IntSrc src_id) = 0;
// acknowledge HW interrupt
virtual void ack_int(uint32_t irq_id, uint8_t irq_line_state) = 0;
virtual void ack_dma_int(uint32_t irq_id, uint8_t irq_line_state) = 0;
};
#endif // HW_INTERRUPT_H