1 /*
2 * Copyright 2001 MontaVista Software Inc.
3 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
4 * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org)
5 *
6 * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
7 * Author: Fuxin Zhang, zhangfx@lemote.com
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 */
14 #include <linux/interrupt.h>
15 #include <linux/compiler.h>
16
17 #include <loongson.h>
18
bonito_irq_enable(struct irq_data * d)19 static inline void bonito_irq_enable(struct irq_data *d)
20 {
21 LOONGSON_INTENSET = (1 << (d->irq - LOONGSON_IRQ_BASE));
22 mmiowb();
23 }
24
bonito_irq_disable(struct irq_data * d)25 static inline void bonito_irq_disable(struct irq_data *d)
26 {
27 LOONGSON_INTENCLR = (1 << (d->irq - LOONGSON_IRQ_BASE));
28 mmiowb();
29 }
30
31 static struct irq_chip bonito_irq_type = {
32 .name = "bonito_irq",
33 .irq_mask = bonito_irq_disable,
34 .irq_unmask = bonito_irq_enable,
35 };
36
37 static struct irqaction __maybe_unused dma_timeout_irqaction = {
38 .handler = no_action,
39 .name = "dma_timeout",
40 };
41
bonito_irq_init(void)42 void bonito_irq_init(void)
43 {
44 u32 i;
45
46 for (i = LOONGSON_IRQ_BASE; i < LOONGSON_IRQ_BASE + 32; i++)
47 irq_set_chip_and_handler(i, &bonito_irq_type,
48 handle_level_irq);
49
50 #ifdef CONFIG_CPU_LOONGSON2E
51 setup_irq(LOONGSON_IRQ_BASE + 10, &dma_timeout_irqaction);
52 #endif
53 }
54