2 * include/asm-v850/irq.h -- Machine interrupt handling
4 * Copyright (C) 2001,02,04 NEC Electronics Corporation
5 * Copyright (C) 2001,02,04 Miles Bader <miles@gnu.org>
7 * This file is subject to the terms and conditions of the GNU General
8 * Public License. See the file COPYING in the main directory of this
9 * archive for more details.
11 * Written by Miles Bader <miles@gnu.org>
14 #ifndef __V850_IRQ_H__
15 #define __V850_IRQ_H__
17 #include <asm/machdep.h>
19 /* Default NUM_MACH_IRQS. */
21 #define NUM_MACH_IRQS NUM_CPU_IRQS
24 /* NMIs have IRQ numbers from FIRST_NMI to FIRST_NMI+NUM_NMIS-1. */
25 #define FIRST_NMI NUM_MACH_IRQS
26 #define IRQ_NMI(n) (FIRST_NMI + (n))
27 /* v850 processors have 3 non-maskable interrupts. */
30 /* Includes both maskable and non-maskable irqs. */
31 #define NR_IRQS (NUM_MACH_IRQS + NUM_NMIS)
37 struct hw_interrupt_type;
40 #define irq_canonicalize(irq) (irq)
42 /* Initialize irq handling for IRQs.
43 BASE_IRQ, BASE_IRQ+INTERVAL, ..., BASE_IRQ+NUM*INTERVAL
44 to IRQ_TYPE. An IRQ_TYPE of 0 means to use a generic interrupt type. */
46 init_irq_handlers (int base_irq, int num, int interval,
47 struct hw_interrupt_type *irq_type);
49 /* Handle interrupt IRQ. REGS are the registers at the time of ther
51 extern unsigned int handle_irq (int irq, struct pt_regs *regs);
54 /* Enable interrupt handling on an irq. */
55 extern void enable_irq(unsigned int irq);
57 /* Disable an irq and wait for completion. */
58 extern void disable_irq (unsigned int irq);
60 /* Disable an irq without waiting. */
61 extern void disable_irq_nosync (unsigned int irq);
63 #endif /* !__ASSEMBLY__ */
65 #endif /* __V850_IRQ_H__ */