1#ifndef _M68K_IRQ_H_ 2#define _M68K_IRQ_H_ 3 4#include <asm/ptrace.h> 5 6#ifdef CONFIG_COLDFIRE 7/* 8 * On the ColdFire we keep track of all vectors. That way drivers 9 * can register whatever vector number they wish, and we can deal 10 * with it. 11 */ 12#define SYS_IRQS 256 13#define NR_IRQS SYS_IRQS 14 15#else 16 17/* 18 * # of m68k interrupts 19 */ 20#define SYS_IRQS 8 21#define NR_IRQS (24+SYS_IRQS) 22 23#endif /* CONFIG_COLDFIRE */ 24 25/* 26 * Interrupt source definitions 27 * General interrupt sources are the level 1-7. 28 * Adding an interrupt service routine for one of these sources 29 * results in the addition of that routine to a chain of routines. 30 * Each one is called in succession. Each individual interrupt 31 * service routine should determine if the device associated with 32 * that routine requires service. 33 */ 34 35#define IRQ1 (1) /* level 1 interrupt */ 36#define IRQ2 (2) /* level 2 interrupt */ 37#define IRQ3 (3) /* level 3 interrupt */ 38#define IRQ4 (4) /* level 4 interrupt */ 39#define IRQ5 (5) /* level 5 interrupt */ 40#define IRQ6 (6) /* level 6 interrupt */ 41#define IRQ7 (7) /* level 7 interrupt (non-maskable) */ 42 43/* 44 * Machine specific interrupt sources. 45 * 46 * Adding an interrupt service routine for a source with this bit 47 * set indicates a special machine specific interrupt source. 48 * The machine specific files define these sources. 49 * 50 * The IRQ_MACHSPEC bit is now gone - the only thing it did was to 51 * introduce unnecessary overhead. 52 * 53 * All interrupt handling is actually machine specific so it is better 54 * to use function pointers, as used by the Sparc port, and select the 55 * interrupt handling functions when initializing the kernel. This way 56 * we save some unnecessary overhead at run-time. 57 * 01/11/97 - Jes 58 */ 59 60extern void (*mach_enable_irq)(unsigned int); 61extern void (*mach_disable_irq)(unsigned int); 62 63/* 64 * various flags for request_irq() - the Amiga now uses the standard 65 * mechanism like all other architectures - IRQF_DISABLED and 66 * IRQF_SHARED are your friends. 67 */ 68#define IRQ_FLG_LOCK (0x0001) /* handler is not replaceable */ 69#define IRQ_FLG_REPLACE (0x0002) /* replace existing handler */ 70#define IRQ_FLG_FAST (0x0004) 71#define IRQ_FLG_SLOW (0x0008) 72#define IRQ_FLG_STD (0x8000) /* internally used */ 73 74#ifdef CONFIG_M68360 75 76#define CPM_INTERRUPT IRQ4 77 78/* see MC68360 User's Manual, p. 7-377 */ 79#define CPM_VECTOR_BASE 0x04 /* 3 MSbits of CPM vector */ 80 81#endif /* CONFIG_M68360 */ 82 83/* 84 * Some drivers want these entry points 85 */ 86#define enable_irq(x) do { } while (0) 87#define disable_irq(x) do { } while (0) 88#define disable_irq_nosync(x) disable_irq(x) 89#define irq_canonicalize(irq) (irq) 90 91#endif /* _M68K_IRQ_H_ */ 92