10c88ca5c9
The G2-to-PCI bridge chip found in SEGA Dreamcast assumes P2 area relative addresses. Set the appropriate IOPORT base offset. Tested-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Artur Rojek <contact@artur-rojek.eu> Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Link: https://lore.kernel.org/r/20240511191614.68561-2-contact@artur-rojek.eu Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* arch/sh/boards/dreamcast/setup.c
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*
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* Hardware support for the Sega Dreamcast.
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*
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* Copyright (c) 2001, 2002 M. R. Brown <mrbrown@linuxdc.org>
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* Copyright (c) 2002, 2003, 2004 Paul Mundt <lethal@linux-sh.org>
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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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* This file originally bore the message (with enclosed-$):
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* Id: setup_dc.c,v 1.5 2001/05/24 05:09:16 mrbrown Exp
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* SEGA Dreamcast support
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*/
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/param.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <linux/device.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/rtc.h>
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#include <asm/machvec.h>
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#include <cpu/addrspace.h>
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#include <mach/sysasic.h>
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static void __init dreamcast_setup(char **cmdline_p)
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{
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/* GAPS PCI bridge assumes P2 area relative addresses. */
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__set_io_port_base(P2SEG);
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}
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static struct sh_machine_vector mv_dreamcast __initmv = {
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.mv_name = "Sega Dreamcast",
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.mv_setup = dreamcast_setup,
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.mv_irq_demux = systemasic_irq_demux,
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.mv_init_irq = systemasic_irq_init,
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};
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