1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright 2001 MontaVista Software Inc.
4 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
5 * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org)
6 *
7 * Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology
8 * Author: Fuxin Zhang, zhangfx@lemote.com
9 */
10#include <linux/interrupt.h>
11#include <linux/compiler.h>
12
13#include <loongson.h>
14
15static inline void bonito_irq_enable(struct irq_data *d)
16{
17	LOONGSON_INTENSET = (1 << (d->irq - LOONGSON_IRQ_BASE));
18	mmiowb();
19}
20
21static inline void bonito_irq_disable(struct irq_data *d)
22{
23	LOONGSON_INTENCLR = (1 << (d->irq - LOONGSON_IRQ_BASE));
24	mmiowb();
25}
26
27static struct irq_chip bonito_irq_type = {
28	.name		= "bonito_irq",
29	.irq_mask	= bonito_irq_disable,
30	.irq_unmask	= bonito_irq_enable,
31};
32
33void bonito_irq_init(void)
34{
35	u32 i;
36
37	for (i = LOONGSON_IRQ_BASE; i < LOONGSON_IRQ_BASE + 32; i++)
38		irq_set_chip_and_handler(i, &bonito_irq_type,
39					 handle_level_irq);
40
41#ifdef CONFIG_CPU_LOONGSON2E
42	i = LOONGSON_IRQ_BASE + 10;
43	if (request_irq(i, no_action, 0, "dma_timeout", NULL))
44		pr_err("Failed to request irq %d (dma_timeout)\n", i);
45#endif
46}
47