| /* SPDX-License-Identifier: GPL-2.0 |
| * |
| * include/asm-sh/dreamcast/sysasic.h |
| * |
| * Definitions for the Dreamcast System ASIC and related peripherals. |
| * |
| * Copyright (c) 2001 M. R. Brown <mrbrown@linuxdc.org> |
| * Copyright (C) 2003 Paul Mundt <lethal@linux-sh.org> |
| * |
| * This file is part of the LinuxDC project (www.linuxdc.org) |
| */ |
| #ifndef __ASM_SH_DREAMCAST_SYSASIC_H |
| #define __ASM_SH_DREAMCAST_SYSASIC_H |
| |
| #include <asm/irq.h> |
| |
| /* Hardware events - |
| |
| Each of these events correspond to a bit within the Event Mask Registers/ |
| Event Status Registers. Because of the virtual IRQ numbering scheme, a |
| base offset must be used when calculating the virtual IRQ that each event |
| takes. |
| */ |
| |
| #define HW_EVENT_IRQ_BASE (48 + 16) |
| |
| /* IRQ 13 */ |
| #define HW_EVENT_VSYNC (HW_EVENT_IRQ_BASE + 5) /* VSync */ |
| #define HW_EVENT_MAPLE_DMA (HW_EVENT_IRQ_BASE + 12) /* Maple DMA complete */ |
| #define HW_EVENT_GDROM_DMA (HW_EVENT_IRQ_BASE + 14) /* GD-ROM DMA complete */ |
| #define HW_EVENT_G2_DMA (HW_EVENT_IRQ_BASE + 15) /* G2 DMA complete */ |
| #define HW_EVENT_PVR2_DMA (HW_EVENT_IRQ_BASE + 19) /* PVR2 DMA complete */ |
| |
| /* IRQ 11 */ |
| #define HW_EVENT_GDROM_CMD (HW_EVENT_IRQ_BASE + 32) /* GD-ROM cmd. complete */ |
| #define HW_EVENT_AICA_SYS (HW_EVENT_IRQ_BASE + 33) /* AICA-related */ |
| #define HW_EVENT_EXTERNAL (HW_EVENT_IRQ_BASE + 35) /* Ext. (expansion) */ |
| |
| #define HW_EVENT_IRQ_MAX (HW_EVENT_IRQ_BASE + 95) |
| |
| /* arch/sh/boards/mach-dreamcast/irq.c */ |
| extern int systemasic_irq_demux(int); |
| extern void systemasic_irq_init(void); |
| |
| #endif /* __ASM_SH_DREAMCAST_SYSASIC_H */ |
| |
