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
bonito_irq_enable(struct irq_data * d)15 static inline void bonito_irq_enable(struct irq_data *d)
16 {
17 LOONGSON_INTENSET = (1 << (d->irq - LOONGSON_IRQ_BASE));
18 mmiowb();
19 }
20
bonito_irq_disable(struct irq_data * d)21 static inline void bonito_irq_disable(struct irq_data *d)
22 {
23 LOONGSON_INTENCLR = (1 << (d->irq - LOONGSON_IRQ_BASE));
24 mmiowb();
25 }
26
27 static struct irq_chip bonito_irq_type = {
28 .name = "bonito_irq",
29 .irq_mask = bonito_irq_disable,
30 .irq_unmask = bonito_irq_enable,
31 };
32
bonito_irq_init(void)33 void 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