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