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/*
* Copyright (C) 1995 Shantanu Goel
* Copyright (C) 2020 Free Software Foundation, Inc
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <i386/irq.h>
#include <device/intr.h>
#include <mach/kern_return.h>
#include <kern/queue.h>
#include <machine/machspl.h>
extern queue_head_t main_intr_queue;
static void
irq_eoi (struct irqdev *dev, int id)
{
/* TODO EOI(dev->irq[id]) */
}
static unsigned int ndisabled_irq[NINTR];
void
__disable_irq (irq_t irq_nr)
{
assert (irq_nr < NINTR);
spl_t s = splhigh();
ndisabled_irq[irq_nr]++;
assert (ndisabled_irq[irq_nr] > 0);
if (ndisabled_irq[irq_nr] == 1)
mask_irq (irq_nr);
splx(s);
}
void
__enable_irq (irq_t irq_nr)
{
assert (irq_nr < NINTR);
spl_t s = splhigh();
assert (ndisabled_irq[irq_nr] > 0);
ndisabled_irq[irq_nr]--;
if (ndisabled_irq[irq_nr] == 0)
unmask_irq (irq_nr);
splx(s);
}
struct irqdev irqtab = {
"irq", irq_eoi, &main_intr_queue, 0,
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
};
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