1 #ifndef _M68K_IRQ_H_ 2 #define _M68K_IRQ_H_ 3 4 /* 5 * This should be the same as the max(NUM_X_SOURCES) for all the 6 * different m68k hosts compiled into the kernel. 7 * Currently the Atari has 72 and the Amiga 24, but if both are 8 * supported in the kernel it is better to make room for 72. 9 */ 10 #if defined(CONFIG_COLDFIRE) 11 #define NR_IRQS 256 12 #elif defined(CONFIG_VME) || defined(CONFIG_SUN3) || defined(CONFIG_SUN3X) 13 #define NR_IRQS 200 14 #elif defined(CONFIG_ATARI) || defined(CONFIG_MAC) 15 #define NR_IRQS 72 16 #elif defined(CONFIG_Q40) 17 #define NR_IRQS 43 18 #elif defined(CONFIG_AMIGA) || !defined(CONFIG_MMU) 19 #define NR_IRQS 32 20 #elif defined(CONFIG_APOLLO) 21 #define NR_IRQS 24 22 #elif defined(CONFIG_HP300) 23 #define NR_IRQS 8 24 #else 25 #define NR_IRQS 0 26 #endif 27 28 #ifdef CONFIG_MMU 29 30 /* 31 * Interrupt source definitions 32 * General interrupt sources are the level 1-7. 33 * Adding an interrupt service routine for one of these sources 34 * results in the addition of that routine to a chain of routines. 35 * Each one is called in succession. Each individual interrupt 36 * service routine should determine if the device associated with 37 * that routine requires service. 38 */ 39 40 #define IRQ_SPURIOUS 0 41 42 #define IRQ_AUTO_1 1 /* level 1 interrupt */ 43 #define IRQ_AUTO_2 2 /* level 2 interrupt */ 44 #define IRQ_AUTO_3 3 /* level 3 interrupt */ 45 #define IRQ_AUTO_4 4 /* level 4 interrupt */ 46 #define IRQ_AUTO_5 5 /* level 5 interrupt */ 47 #define IRQ_AUTO_6 6 /* level 6 interrupt */ 48 #define IRQ_AUTO_7 7 /* level 7 interrupt (non-maskable) */ 49 50 #define IRQ_USER 8 51 52 /* 53 * various flags for request_irq() - the Amiga now uses the standard 54 * mechanism like all other architectures - IRQF_DISABLED and 55 * IRQF_SHARED are your friends. 56 */ 57 #ifndef MACH_AMIGA_ONLY 58 #define IRQ_FLG_LOCK (0x0001) /* handler is not replaceable */ 59 #define IRQ_FLG_REPLACE (0x0002) /* replace existing handler */ 60 #define IRQ_FLG_FAST (0x0004) 61 #define IRQ_FLG_SLOW (0x0008) 62 #define IRQ_FLG_STD (0x8000) /* internally used */ 63 #endif 64 65 struct irq_data; 66 struct irq_chip; 67 struct irq_desc; 68 extern unsigned int m68k_irq_startup(struct irq_data *data); 69 extern unsigned int m68k_irq_startup_irq(unsigned int irq); 70 extern void m68k_irq_shutdown(struct irq_data *data); 71 extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int, 72 struct pt_regs *)); 73 extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt); 74 extern void m68k_setup_irq_controller(struct irq_chip *, 75 void (*handle)(unsigned int irq, 76 struct irq_desc *desc), 77 unsigned int irq, unsigned int cnt); 78 79 extern unsigned int irq_canonicalize(unsigned int irq); 80 81 #else 82 #define irq_canonicalize(irq) (irq) 83 #endif /* CONFIG_MMU */ 84 85 asmlinkage void do_IRQ(int irq, struct pt_regs *regs); 86 extern atomic_t irq_err_count; 87 88 #endif /* _M68K_IRQ_H_ */ 89