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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/mips/loongson2ef/common/bonito-irq.c
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// SPDX-License-Identifier: GPL-2.0-or-later

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/*

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 * Copyright 2001 MontaVista Software Inc.

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 * Author: Jun Sun, [email protected] or [email protected]

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 * Copyright (C) 2000, 2001 Ralf Baechle ([email protected])

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 *

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 * Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology

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 * Author: Fuxin Zhang, [email protected]

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 */

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#include <linux/interrupt.h>

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#include <linux/compiler.h>

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#include <loongson.h>

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static inline void bonito_irq_enable(struct irq_data *d)

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{

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	LOONGSON_INTENSET = (1 << (d->irq - LOONGSON_IRQ_BASE));

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	mmiowb();

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}

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static inline void bonito_irq_disable(struct irq_data *d)

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{

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	LOONGSON_INTENCLR = (1 << (d->irq - LOONGSON_IRQ_BASE));

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	mmiowb();

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}

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static struct irq_chip bonito_irq_type = {

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	.name		= "bonito_irq",

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	.irq_mask	= bonito_irq_disable,

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	.irq_unmask	= bonito_irq_enable,

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};

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void bonito_irq_init(void)

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{

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	u32 i;

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	for (i = LOONGSON_IRQ_BASE; i < LOONGSON_IRQ_BASE + 32; i++)

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		irq_set_chip_and_handler(i, &bonito_irq_type,

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					 handle_level_irq);

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#ifdef CONFIG_CPU_LOONGSON2E

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	i = LOONGSON_IRQ_BASE + 10;

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	if (request_irq(i, no_action, 0, "dma_timeout", NULL))

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		pr_err("Failed to request irq %d (dma_timeout)\n", i);

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#endif

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}

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