1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Port on Texas Instruments TMS320C6x architecture 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2004, 2006, 2009, 2010, 2011 Texas Instruments Incorporated 6*4882a593Smuzhiyun * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * Large parts taken directly from powerpc. 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun #ifndef _ASM_C6X_IRQ_H 11*4882a593Smuzhiyun #define _ASM_C6X_IRQ_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <linux/irqdomain.h> 14*4882a593Smuzhiyun #include <linux/threads.h> 15*4882a593Smuzhiyun #include <linux/list.h> 16*4882a593Smuzhiyun #include <linux/radix-tree.h> 17*4882a593Smuzhiyun #include <asm/percpu.h> 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun #define irq_canonicalize(irq) (irq) 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun /* 22*4882a593Smuzhiyun * The C64X+ core has 16 IRQ vectors. One each is used by Reset and NMI. Two 23*4882a593Smuzhiyun * are reserved. The remaining 12 vectors are used to route SoC interrupts. 24*4882a593Smuzhiyun * These interrupt vectors are prioritized with IRQ 4 having the highest 25*4882a593Smuzhiyun * priority and IRQ 15 having the lowest. 26*4882a593Smuzhiyun * 27*4882a593Smuzhiyun * The C64x+ megamodule provides a PIC which combines SoC IRQ sources into a 28*4882a593Smuzhiyun * single core IRQ vector. There are four combined sources, each of which 29*4882a593Smuzhiyun * feed into one of the 12 general interrupt vectors. The remaining 8 vectors 30*4882a593Smuzhiyun * can each route a single SoC interrupt directly. 31*4882a593Smuzhiyun */ 32*4882a593Smuzhiyun #define NR_PRIORITY_IRQS 16 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun /* Total number of virq in the platform */ 35*4882a593Smuzhiyun #define NR_IRQS 256 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun /* This number is used when no interrupt has been assigned */ 38*4882a593Smuzhiyun #define NO_IRQ 0 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun extern void __init init_pic_c64xplus(void); 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun extern void init_IRQ(void); 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun struct pt_regs; 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun extern asmlinkage void c6x_do_IRQ(unsigned int prio, struct pt_regs *regs); 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun extern unsigned long irq_err_count; 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun #endif /* _ASM_C6X_IRQ_H */ 51