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 /* This type is the placeholder for a hardware interrupt number. It has to 16 * be big enough to enclose whatever representation is used by a given 17 * platform. 18 */ 19 typedef unsigned long irq_hw_number_t; 20 21 extern unsigned int nr_irq; 22 23 #define NO_IRQ (-1) 24 25 struct pt_regs; 26 extern void do_IRQ(struct pt_regs *regs); 27 28 /** FIXME - not implement 29 * irq_dispose_mapping - Unmap an interrupt 30 * @virq: linux virq number of the interrupt to unmap 31 */ 32 static inline void irq_dispose_mapping(unsigned int virq) 33 { 34 return; 35 } 36 37 struct irq_host; 38 39 /** 40 * irq_create_mapping - Map a hardware interrupt into linux virq space 41 * @host: host owning this hardware interrupt or NULL for default host 42 * @hwirq: hardware irq number in that host space 43 * 44 * Only one mapping per hardware interrupt is permitted. Returns a linux 45 * virq number. 46 * If the sense/trigger is to be specified, set_irq_type() should be called 47 * on the number returned from that call. 48 */ 49 extern unsigned int irq_create_mapping(struct irq_host *host, 50 irq_hw_number_t hwirq); 51 52 #endif /* _ASM_MICROBLAZE_IRQ_H */ 53