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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1992 Linus Torvalds
* Copyright (C) 1994 - 2000 Ralf Baechle
* Copyright (C) 2006 Thomas Bogendoerfer
*/
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <asm/i8259.h>
#include <asm/io.h>
#include <asm/sni.h>
#include <asm/irq.h>
#include <asm/irq_cpu.h>
void (*sni_hwint)(void);
asmlinkage void plat_irq_dispatch(void)
{
sni_hwint();
}
/* ISA irq handler */
static irqreturn_t sni_isa_irq_handler(int dummy, void *p)
{
int irq;
irq = i8259_irq();
if (unlikely(irq < 0))
return IRQ_NONE;
do_IRQ(irq);
return IRQ_HANDLED;
}
struct irqaction sni_isa_irq = {
.handler = sni_isa_irq_handler,
.name = "ISA",
.flags = SA_SHIRQ
};
/*
* On systems with i8259-style interrupt controllers we assume for
* driver compatibility reasons interrupts 0 - 15 to be the i8295
* interrupts even if the hardware uses a different interrupt numbering.
*/
void __init arch_init_irq(void)
{
init_i8259_irqs(); /* Integrated i8259 */
switch (sni_brd_type) {
case SNI_BRD_10:
case SNI_BRD_10NEW:
case SNI_BRD_TOWER_OASIC:
case SNI_BRD_MINITOWER:
sni_a20r_irq_init();
break;
case SNI_BRD_PCI_TOWER:
sni_pcit_irq_init();
break;
case SNI_BRD_PCI_TOWER_CPLUS:
sni_pcit_cplus_irq_init();
break;
case SNI_BRD_RM200:
sni_rm200_irq_init();
break;
case SNI_BRD_PCI_MTOWER:
case SNI_BRD_PCI_DESKTOP:
case SNI_BRD_PCI_MTOWER_CPLUS:
sni_pcimt_irq_init();
break;
}
}
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