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 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 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 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