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setup.c

/*
 * arch/sh/boards/dreamcast/setup.c
 *
 * Hardware support for the Sega Dreamcast.
 *
 * Copyright (c) 2001, 2002 M. R. Brown <mrbrown@linuxdc.org>
 * Copyright (c) 2002, 2003, 2004 Paul Mundt <lethal@linux-sh.org>
 *
 * This file is part of the LinuxDC project (www.linuxdc.org)
 *
 * Released under the terms of the GNU GPL v2.0.
 *
 * This file originally bore the message (with enclosed-$):
 *    Id: setup_dc.c,v 1.5 2001/05/24 05:09:16 mrbrown Exp
 *    SEGA Dreamcast support
 */

#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/device.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/rtc.h>
#include <asm/machvec.h>
#include <asm/mach/sysasic.h>

extern struct hw_interrupt_type systemasic_int;
extern void aica_time_init(void);
extern int gapspci_init(void);
extern int systemasic_irq_demux(int);

void *dreamcast_consistent_alloc(struct device *, size_t, dma_addr_t *, gfp_t);
int dreamcast_consistent_free(struct device *, size_t, void *, dma_addr_t);

static void __init dreamcast_setup(char **cmdline_p)
{
      int i;

      /* Mask all hardware events */
      /* XXX */

      /* Acknowledge any previous events */
      /* XXX */

      __set_io_port_base(0xa0000000);

      /* Assign all virtual IRQs to the System ASIC int. handler */
      for (i = HW_EVENT_IRQ_BASE; i < HW_EVENT_IRQ_MAX; i++)
            irq_desc[i].chip = &systemasic_int;

      board_time_init = aica_time_init;

#ifdef CONFIG_PCI
      if (gapspci_init() < 0)
            printk(KERN_WARNING "GAPSPCI was not detected.\n");
#endif
}

static struct sh_machine_vector mv_dreamcast __initmv = {
      .mv_name          = "Sega Dreamcast",
      .mv_setup         = dreamcast_setup,
      .mv_irq_demux           = systemasic_irq_demux,

#ifdef CONFIG_PCI
      .mv_consistent_alloc    = dreamcast_consistent_alloc,
      .mv_consistent_free     = dreamcast_consistent_free,
#endif
};

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