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/*
* Copyright (c) 2011 Aeroflex Gaisler
*
* BSD license:
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <asm-leon/leonstack.h>
#include <asm-leon/irq.h>
#define NULL 0
struct irqaction *_irqtbl[32] =
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0 };
struct irqaction _oirqtbl[32] =
{ INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION,
INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION,
INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION,
INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION,
INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION,
INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION,
INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION,
INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION, INIT_IRQACTION
};
int
catch_interrupt (int func, int irq)
{
struct irqaction *a = _irqtbl[irq];
struct irqaction *n = &_oirqtbl[irq];
if (irq >= 32)
return 0;
while (a)
{
if (a == n)
{
int tmp = (int) a->handler;
a->handler = (irqhandler) func;
return tmp;
}
a = a->next;
}
n->handler = (irqhandler) func;
chained_catch_interrupt (irq, n);
return 0;
}
void
chained_catch_interrupt (int irq, struct irqaction *a)
{
a->next = _irqtbl[irq];
_irqtbl[irq] = a;
}
int no_inirq_check = 0;
int inirq[32] = { 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0
};
extern struct irqmp_type irqmp;
void (*handler_irq_pre) (void) = 0;
void (*handler_irq_post) (void) = 0;
handler_irq (int irq, struct leonbare_pt_regs *pt_regs)
{
struct irqaction *a;
if (irq == irqmp.eirq)
irq = irqmp.addr[48] & 0x1f;
if (!irq)
irq = irqmp.eirq;
a = _irqtbl[irq];
while (a)
{
if (a->handler)
{
#ifndef CONFIG_LEONBARE_NONESTEDIRQ
if (no_inirq_check || !(inirq[irq]))
{
#endif
inirq[irq]++;
if (handler_irq_pre)
handler_irq_pre ();
a->handler (irq, a->dev_id, pt_regs);
if (handler_irq_post)
handler_irq_post ();
inirq[irq]--;
#ifndef CONFIG_LEONBARE_NONESTEDIRQ
}
#endif
}
a = a->next;
}
}
schedulehandler schedule_callback = 0;
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