1/*
2 * arch/sh/boards/dreamcast/setup.c
3 *
4 * Hardware support for the Sega Dreamcast.
5 *
6 * Copyright (c) 2001, 2002 M. R. Brown <mrbrown@linuxdc.org>
7 * Copyright (c) 2002, 2003, 2004 Paul Mundt <lethal@linux-sh.org>
8 *
9 * This file is part of the LinuxDC project (www.linuxdc.org)
10 *
11 * Released under the terms of the GNU GPL v2.0.
12 *
13 * This file originally bore the message (with enclosed-$):
14 *	Id: setup_dc.c,v 1.5 2001/05/24 05:09:16 mrbrown Exp
15 *	SEGA Dreamcast support
16 */
17
18#include <linux/sched.h>
19#include <linux/kernel.h>
20#include <linux/param.h>
21#include <linux/interrupt.h>
22#include <linux/init.h>
23#include <linux/irq.h>
24#include <linux/device.h>
25#include <asm/io.h>
26#include <asm/irq.h>
27#include <asm/rtc.h>
28#include <asm/machvec.h>
29#include <asm/mach/sysasic.h>
30
31extern struct hw_interrupt_type systemasic_int;
32extern void aica_time_init(void);
33extern int gapspci_init(void);
34extern int systemasic_irq_demux(int);
35
36void *dreamcast_consistent_alloc(struct device *, size_t, dma_addr_t *, gfp_t);
37int dreamcast_consistent_free(struct device *, size_t, void *, dma_addr_t);
38
39static void __init dreamcast_setup(char **cmdline_p)
40{
41	int i;
42
43	/* Mask all hardware events */
44
45	/* Acknowledge any previous events */
46
47	__set_io_port_base(0xa0000000);
48
49	/* Assign all virtual IRQs to the System ASIC int. handler */
50	for (i = HW_EVENT_IRQ_BASE; i < HW_EVENT_IRQ_MAX; i++)
51		irq_desc[i].chip = &systemasic_int;
52
53	board_time_init = aica_time_init;
54
55#ifdef CONFIG_PCI
56	if (gapspci_init() < 0)
57		printk(KERN_WARNING "GAPSPCI was not detected.\n");
58#endif
59}
60
61struct sh_machine_vector mv_dreamcast __initmv = {
62	.mv_name		= "Sega Dreamcast",
63	.mv_setup		= dreamcast_setup,
64	.mv_irq_demux		= systemasic_irq_demux,
65
66#ifdef CONFIG_PCI
67	.mv_consistent_alloc	= dreamcast_consistent_alloc,
68	.mv_consistent_free	= dreamcast_consistent_free,
69#endif
70};
71ALIAS_MV(dreamcast)
72