1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _M68K_IRQ_H_ 3#define _M68K_IRQ_H_ 4 5#include <linux/atomic.h> 6#include <linux/linkage.h> 7 8/* 9 * This should be the same as the max(NUM_X_SOURCES) for all the 10 * different m68k hosts compiled into the kernel. 11 * Currently the Atari has 72 and the Amiga 24, but if both are 12 * supported in the kernel it is better to make room for 72. 13 * With EtherNAT add-on card on Atari, the highest interrupt 14 * number is 140 so NR_IRQS needs to be 141. 15 */ 16#if defined(CONFIG_COLDFIRE) 17#define NR_IRQS 256 18#elif defined(CONFIG_VME) || defined(CONFIG_SUN3) || \ 19 defined(CONFIG_SUN3X) || defined(CONFIG_VIRT) 20#define NR_IRQS 200 21#elif defined(CONFIG_ATARI) 22#define NR_IRQS 141 23#elif defined(CONFIG_MAC) 24#define NR_IRQS 72 25#elif defined(CONFIG_Q40) 26#define NR_IRQS 43 27#elif defined(CONFIG_AMIGA) || !defined(CONFIG_MMU) 28#define NR_IRQS 32 29#elif defined(CONFIG_APOLLO) 30#define NR_IRQS 24 31#elif defined(CONFIG_HP300) 32#define NR_IRQS 8 33#else 34#define NR_IRQS 0 35#endif 36 37#if defined(CONFIG_M68020) || defined(CONFIG_M68030) || \ 38 defined(CONFIG_M68040) || defined(CONFIG_M68060) 39 40/* 41 * Interrupt source definitions 42 * General interrupt sources are the level 1-7. 43 * Adding an interrupt service routine for one of these sources 44 * results in the addition of that routine to a chain of routines. 45 * Each one is called in succession. Each individual interrupt 46 * service routine should determine if the device associated with 47 * that routine requires service. 48 */ 49 50#define IRQ_SPURIOUS 0 51 52#define IRQ_AUTO_1 1 /* level 1 interrupt */ 53#define IRQ_AUTO_2 2 /* level 2 interrupt */ 54#define IRQ_AUTO_3 3 /* level 3 interrupt */ 55#define IRQ_AUTO_4 4 /* level 4 interrupt */ 56#define IRQ_AUTO_5 5 /* level 5 interrupt */ 57#define IRQ_AUTO_6 6 /* level 6 interrupt */ 58#define IRQ_AUTO_7 7 /* level 7 interrupt (non-maskable) */ 59 60#define IRQ_USER 8 61 62struct irq_data; 63struct irq_chip; 64struct irq_desc; 65struct pt_regs; 66 67extern unsigned int m68k_irq_startup(struct irq_data *data); 68extern unsigned int m68k_irq_startup_irq(unsigned int irq); 69extern void m68k_irq_shutdown(struct irq_data *data); 70extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int, 71 struct pt_regs *)); 72extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt); 73extern void m68k_setup_irq_controller(struct irq_chip *, 74 void (*handle)(struct irq_desc *desc), 75 unsigned int irq, unsigned int cnt); 76 77extern unsigned int irq_canonicalize(unsigned int irq); 78 79#else 80#define irq_canonicalize(irq) (irq) 81#endif /* !(CONFIG_M68020 || CONFIG_M68030 || CONFIG_M68040 || CONFIG_M68060) */ 82 83asmlinkage void do_IRQ(int irq, struct pt_regs *regs); 84extern atomic_t irq_err_count; 85 86#endif /* _M68K_IRQ_H_ */ 87