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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
| commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
| tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/sh/include/mach-dreamcast/mach/sysasic.h | |
| parent | Initial commit. (diff) | |
| download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip | |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/sh/include/mach-dreamcast/mach/sysasic.h')
| -rw-r--r-- | arch/sh/include/mach-dreamcast/mach/sysasic.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/sh/include/mach-dreamcast/mach/sysasic.h b/arch/sh/include/mach-dreamcast/mach/sysasic.h new file mode 100644 index 000000000..3b27be9a5 --- /dev/null +++ b/arch/sh/include/mach-dreamcast/mach/sysasic.h @@ -0,0 +1,46 @@ +/* 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 */ + |