sysasic.h (1562B)
1/* SPDX-License-Identifier: GPL-2.0 2 * 3 * include/asm-sh/dreamcast/sysasic.h 4 * 5 * Definitions for the Dreamcast System ASIC and related peripherals. 6 * 7 * Copyright (c) 2001 M. R. Brown <mrbrown@linuxdc.org> 8 * Copyright (C) 2003 Paul Mundt <lethal@linux-sh.org> 9 * 10 * This file is part of the LinuxDC project (www.linuxdc.org) 11 */ 12#ifndef __ASM_SH_DREAMCAST_SYSASIC_H 13#define __ASM_SH_DREAMCAST_SYSASIC_H 14 15#include <asm/irq.h> 16 17/* Hardware events - 18 19 Each of these events correspond to a bit within the Event Mask Registers/ 20 Event Status Registers. Because of the virtual IRQ numbering scheme, a 21 base offset must be used when calculating the virtual IRQ that each event 22 takes. 23*/ 24 25#define HW_EVENT_IRQ_BASE 48 26 27/* IRQ 13 */ 28#define HW_EVENT_VSYNC (HW_EVENT_IRQ_BASE + 5) /* VSync */ 29#define HW_EVENT_MAPLE_DMA (HW_EVENT_IRQ_BASE + 12) /* Maple DMA complete */ 30#define HW_EVENT_GDROM_DMA (HW_EVENT_IRQ_BASE + 14) /* GD-ROM DMA complete */ 31#define HW_EVENT_G2_DMA (HW_EVENT_IRQ_BASE + 15) /* G2 DMA complete */ 32#define HW_EVENT_PVR2_DMA (HW_EVENT_IRQ_BASE + 19) /* PVR2 DMA complete */ 33 34/* IRQ 11 */ 35#define HW_EVENT_GDROM_CMD (HW_EVENT_IRQ_BASE + 32) /* GD-ROM cmd. complete */ 36#define HW_EVENT_AICA_SYS (HW_EVENT_IRQ_BASE + 33) /* AICA-related */ 37#define HW_EVENT_EXTERNAL (HW_EVENT_IRQ_BASE + 35) /* Ext. (expansion) */ 38 39#define HW_EVENT_IRQ_MAX (HW_EVENT_IRQ_BASE + 95) 40 41/* arch/sh/boards/mach-dreamcast/irq.c */ 42extern int systemasic_irq_demux(int); 43extern void systemasic_irq_init(void); 44 45#endif /* __ASM_SH_DREAMCAST_SYSASIC_H */ 46