1 /* include/asm-sh/dc_sysasic.h 2 * 3 * Definitions for the Dreamcast System ASIC and related peripherals. 4 * 5 * Copyright (c) 2001 M. R. Brown <mrbrown@linuxdc.org> 6 * 7 * This file is part of the LinuxDC project (www.linuxdc.org) 8 * 9 * Released under the terms of the GNU GPL v2.0. 10 * 11 */ 12 13 #include <asm/irq.h> 14 15 /* Hardware events - 16 17 Each of these events correspond to a bit within the Event Mask Registers/ 18 Event Status Registers. Because of the virtual IRQ numbering scheme, a 19 base offset must be used when calculating the virtual IRQ that each event 20 takes. 21 */ 22 23 #define HW_EVENT_IRQ_BASE OFFCHIP_IRQ_BASE /* 48 */ 24 25 /* IRQ 13 */ 26 #define HW_EVENT_VSYNC (HW_EVENT_IRQ_BASE + 5) /* VSync */ 27 #define HW_EVENT_MAPLE_DMA (HW_EVENT_IRQ_BASE + 12) /* Maple DMA complete */ 28 #define HW_EVENT_GDROM_DMA (HW_EVENT_IRQ_BASE + 14) /* GD-ROM DMA complete */ 29 30 /* IRQ 11 */ 31 #define HW_EVENT_GDROM_CMD (HW_EVENT_IRQ_BASE + 32) /* GD-ROM cmd. complete */ 32 #define HW_EVENT_AICA_SYS (HW_EVENT_IRQ_BASE + 33) /* AICA-related */ 33 #define HW_EVENT_EXTERNAL (HW_EVENT_IRQ_BASE + 35) /* Ext. (expansion) */ 34 35 #define HW_EVENT_IRQ_MAX (HW_EVENT_IRQ_BASE + 95) 36