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