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/arch/sh/boards/dreamcast/setup.c

https://bitbucket.org/evzijst/gittest
C | 83 lines | 45 code | 16 blank | 22 comment | 2 complexity | 5626d0561347ed70f4800bf576e4b035 MD5 | raw file
 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
26#include <asm/io.h>
27#include <asm/irq.h>
28#include <asm/machvec.h>
29#include <asm/machvec_init.h>
30#include <asm/mach/sysasic.h>
31
32extern struct hw_interrupt_type systemasic_int;
33/* XXX: Move this into it's proper header. */
34extern void (*board_time_init)(void);
35extern void aica_time_init(void);
36extern int gapspci_init(void);
37extern int systemasic_irq_demux(int);
38
39void *dreamcast_consistent_alloc(struct device *, size_t, dma_addr_t *, int);
40int dreamcast_consistent_free(struct device *, size_t, void *, dma_addr_t);
41
42const char *get_system_type(void)
43{
44	return "Sega Dreamcast";
45}
46
47struct sh_machine_vector mv_dreamcast __initmv = {
48	.mv_nr_irqs		= NR_IRQS,
49
50	.mv_irq_demux		= systemasic_irq_demux,
51
52#ifdef CONFIG_PCI
53	.mv_consistent_alloc	= dreamcast_consistent_alloc,
54	.mv_consistent_free	= dreamcast_consistent_free,
55#endif
56};
57ALIAS_MV(dreamcast)
58
59int __init platform_setup(void)
60{
61	int i;
62
63	/* Mask all hardware events */
64	/* XXX */
65
66	/* Acknowledge any previous events */
67	/* XXX */
68
69	__set_io_port_base(0xa0000000);
70
71	/* Assign all virtual IRQs to the System ASIC int. handler */
72	for (i = HW_EVENT_IRQ_BASE; i < HW_EVENT_IRQ_MAX; i++)
73		irq_desc[i].handler = &systemasic_int;
74
75	board_time_init = aica_time_init;
76
77#ifdef CONFIG_PCI
78	if (gapspci_init() < 0)
79		printk(KERN_WARNING "GAPSPCI was not detected.\n");
80#endif
81
82	return 0;
83}