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 62 struct irq_data; 63 struct irq_chip; 64 struct irq_desc; 65 struct pt_regs; 66 67 extern unsigned int m68k_irq_startup(struct irq_data *data); 68 extern unsigned int m68k_irq_startup_irq(unsigned int irq); 69 extern void m68k_irq_shutdown(struct irq_data *data); 70 extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int, 71 struct pt_regs *)); 72 extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt); 73 extern void m68k_setup_irq_controller(struct irq_chip *, 74 void (*handle)(struct irq_desc *desc), 75 unsigned int irq, unsigned int cnt); 76 77 extern 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 83 asmlinkage void do_IRQ(int irq, struct pt_regs *regs); 84 extern atomic_t irq_err_count; 85 86 #endif /* _M68K_IRQ_H_ */ 87