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 43 extern void __init init_pic_c64xplus(void); 44 45 extern void init_IRQ(void); 46 47 struct pt_regs; 48 49 extern asmlinkage void c6x_do_IRQ(unsigned int prio, struct pt_regs *regs); 50 51 extern unsigned long irq_err_count; 52 53 #endif /* _ASM_C6X_IRQ_H */ 54
