1/*
 2 *  Port on Texas Instruments TMS320C6x architecture
 3 *
 4 *  Copyright (C) 2004, 2006, 2009, 2010, 2011 Texas Instruments Incorporated
 5 *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
 6 *
 7 *  Large parts taken directly from powerpc.
 8 *
 9 *  This program is free software; you can redistribute it and/or modify
10 *  it under the terms of the GNU General Public License version 2 as
11 *  published by the Free Software Foundation.
12 */
13#ifndef _ASM_C6X_IRQ_H
14#define _ASM_C6X_IRQ_H
15
16#include <linux/irqdomain.h>
17#include <linux/threads.h>
18#include <linux/list.h>
19#include <linux/radix-tree.h>
20#include <asm/percpu.h>
21
22#define irq_canonicalize(irq)  (irq)
23
24/*
25 * The C64X+ core has 16 IRQ vectors. One each is used by Reset and NMI. Two
26 * are reserved. The remaining 12 vectors are used to route SoC interrupts.
27 * These interrupt vectors are prioritized with IRQ 4 having the highest
28 * priority and IRQ 15 having the lowest.
29 *
30 * The C64x+ megamodule provides a PIC which combines SoC IRQ sources into a
31 * single core IRQ vector. There are four combined sources, each of which
32 * feed into one of the 12 general interrupt vectors. The remaining 8 vectors
33 * can each route a single SoC interrupt directly.
34 */
35#define NR_PRIORITY_IRQS 16
36
37/* Total number of virq in the platform */
38#define NR_IRQS		256
39
40/* This number is used when no interrupt has been assigned */
41#define NO_IRQ		0
42
43extern void __init init_pic_c64xplus(void);
44
45extern void init_IRQ(void);
46
47struct pt_regs;
48
49extern asmlinkage void c6x_do_IRQ(unsigned int prio, struct pt_regs *regs);
50
51extern unsigned long irq_err_count;
52
53#endif /* _ASM_C6X_IRQ_H */