1 /* 2 * Copyright (C) 2006 Atmark Techno, Inc. 3 * 4 * This file is subject to the terms and conditions of the GNU General Public 5 * License. See the file "COPYING" in the main directory of this archive 6 * for more details. 7 */ 8 9 #ifndef _ASM_MICROBLAZE_IRQ_H 10 #define _ASM_MICROBLAZE_IRQ_H 11 12 #define NR_IRQS 32 13 #include <asm-generic/irq.h> 14 15 #include <linux/interrupt.h> 16 17 /* This type is the placeholder for a hardware interrupt number. It has to 18 * be big enough to enclose whatever representation is used by a given 19 * platform. 20 */ 21 typedef unsigned long irq_hw_number_t; 22 23 extern unsigned int nr_irq; 24 25 #define NO_IRQ (-1) 26 27 struct pt_regs; 28 extern void do_IRQ(struct pt_regs *regs); 29 30 /** FIXME - not implement 31 * irq_dispose_mapping - Unmap an interrupt 32 * @virq: linux virq number of the interrupt to unmap 33 */ 34 static inline void irq_dispose_mapping(unsigned int virq) 35 { 36 return; 37 } 38 39 struct irq_host; 40 41 /** 42 * irq_create_mapping - Map a hardware interrupt into linux virq space 43 * @host: host owning this hardware interrupt or NULL for default host 44 * @hwirq: hardware irq number in that host space 45 * 46 * Only one mapping per hardware interrupt is permitted. Returns a linux 47 * virq number. 48 * If the sense/trigger is to be specified, set_irq_type() should be called 49 * on the number returned from that call. 50 */ 51 extern unsigned int irq_create_mapping(struct irq_host *host, 52 irq_hw_number_t hwirq); 53 54 #endif /* _ASM_MICROBLAZE_IRQ_H */ 55