Release 4.14 arch/mips/loongson64/fuloong-2e/irq.c

/*
 * Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology
 * Author: Fuxin Zhang, zhangfx@lemote.com
 *
 *  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 of the  License, or (at your
 *  option) any later version.
 */
#include <linux/interrupt.h>

#include <asm/irq_cpu.h>
#include <asm/i8259.h>

#include <loongson.h>



static void i8259_irqdispatch(void)
{
	int irq;

	irq = i8259_irq();
	if (irq >= 0)
		do_IRQ(irq);
	else
		spurious_interrupt();
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Songmao Tian
31
100.00%
1
100.00%
Total
31
100.00%
1
100.00%



asmlinkage void mach_irq_dispatch(unsigned int pending)
{
	if (pending & CAUSEF_IP7)
		do_IRQ(MIPS_CPU_IRQ_BASE + 7);
	else if (pending & CAUSEF_IP6) /* perf counter loverflow */
		do_perfcnt_IRQ();
	else if (pending & CAUSEF_IP5)
		i8259_irqdispatch();
	else if (pending & CAUSEF_IP2)
		bonito_irqdispatch();
	else
		spurious_interrupt();
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Songmao Tian
44
75.86%
1
25.00%
Wu Zhangjin
14
24.14%
3
75.00%
Total
58
100.00%
4
100.00%


static struct irqaction cascade_irqaction = {
	.handler = no_action,
	.name = "cascade",
	.flags = IRQF_NO_THREAD,
};



void __init mach_init_irq(void)
{
	/* init all controller
         *   0-15         ------> i8259 interrupt
         *   16-23        ------> mips cpu interrupt
         *   32-63        ------> bonito irq
         */

	/* most bonito irq should be level triggered */
	LOONGSON_INTEDGE = LOONGSON_ICU_SYSTEMERR | LOONGSON_ICU_MASTERERR |
	    LOONGSON_ICU_RETRYERR | LOONGSON_ICU_MBOXES;

	/* Sets the first-level interrupt dispatcher. */
	mips_cpu_irq_init();
	init_i8259_irqs();
	bonito_irq_init();

	/* bonito irq at IP2 */
	setup_irq(MIPS_CPU_IRQ_BASE + 2, &cascade_irqaction);
	/* 8259 irq at IP5 */
	setup_irq(MIPS_CPU_IRQ_BASE + 5, &cascade_irqaction);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Songmao Tian
45
86.54%
1
25.00%
Wu Zhangjin
6
11.54%
2
50.00%
Ralf Bächle
1
1.92%
1
25.00%
Total
52
100.00%
4
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Songmao Tian
148
84.09%
1
10.00%
Wu Zhangjin
26
14.77%
7
70.00%
Ralf Bächle
2
1.14%
2
20.00%
Total
176
100.00%
10
100.00%
Directory: arch/mips/loongson64/fuloong-2e

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.