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hpsim_irq.c

/*
 * Platform dependent support for HP simulator.
 *
 * Copyright (C) 1998-2001 Hewlett-Packard Co
 * Copyright (C) 1998-2001 David Mosberger-Tang <davidm@hpl.hp.com>
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/irq.h>

static unsigned int
hpsim_irq_startup (unsigned int irq)
{
      return 0;
}

static void
hpsim_irq_noop (unsigned int irq)
{
}

static void
hpsim_set_affinity_noop (unsigned int a, cpumask_t b)
{
}

static struct hw_interrupt_type irq_type_hp_sim = {
      .name =           "hpsim",
      .startup =  hpsim_irq_startup,
      .shutdown = hpsim_irq_noop,
      .enable =   hpsim_irq_noop,
      .disable =  hpsim_irq_noop,
      .ack =            hpsim_irq_noop,
      .end =            hpsim_irq_noop,
      .set_affinity =   hpsim_set_affinity_noop,
};

void __init
hpsim_irq_init (void)
{
      irq_desc_t *idesc;
      int i;

      for (i = 0; i < NR_IRQS; ++i) {
            idesc = irq_desc + i;
            if (idesc->chip == &no_irq_type)
                  idesc->chip = &irq_type_hp_sim;
      }
}

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