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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | #ifndef _M68K_IRQ_H_ #define _M68K_IRQ_H_ extern void disable_irq(unsigned int); extern void enable_irq(unsigned int); #include <linux/config.h> /* * This should be the same as the max(NUM_X_SOURCES) for all the * different m68k hosts compiled into the kernel. * Currently the Atari has 72 and the Amiga 24, but if both are * supported in the kernel it is better to make room for 72. */ #if defined(CONFIG_ATARI) #define NR_IRQS 72 #else #define NR_IRQS 24 #endif /* * Interrupt source definitions * General interrupt sources are the level 1-7. * Adding an interrupt service routine for one of these sources * results in the addition of that routine to a chain of routines. * Each one is called in succession. Each individual interrupt * service routine should determine if the device associated with * that routine requires service. */ #define IRQ1 (1) /* level 1 interrupt */ #define IRQ2 (2) /* level 2 interrupt */ #define IRQ3 (3) /* level 3 interrupt */ #define IRQ4 (4) /* level 4 interrupt */ #define IRQ5 (5) /* level 5 interrupt */ #define IRQ6 (6) /* level 6 interrupt */ #define IRQ7 (7) /* level 7 interrupt (non-maskable) */ /* * "Generic" interrupt sources */ #define IRQ_SCHED_TIMER (8) /* interrupt source for scheduling timer */ /* * Machine specific interrupt sources. * * Adding an interrupt service routine for a source with this bit * set indicates a special machine specific interrupt source. * The machine specific files define these sources. */ #define IRQ_MACHSPEC (0x10000000L) #ifndef ISRFUNC_T struct pt_regs; typedef void (*isrfunc) (int irq, struct pt_regs * regs, void *data); #define ISRFUNC_T #endif /* ISRFUNC_T */ /* * This structure is used to chain together the ISRs for a particular * interrupt source (if it supports chaining). */ typedef struct isr_node { isrfunc isr; int pri; void *data; char *name; struct isr_node *next; } isr_node_t; /* count of spurious interrupts */ extern volatile unsigned long num_spurious; /* * This function returns a new isr_node_t */ extern isr_node_t *new_isr_node(void); /* * This function is used to add a specific interrupt service routine * for the specified interrupt source. * * If the source is machine specific, it will be passed along to the * machine specific routine. * * "data" is user specified data which will be passed to the isr routine. * * (isrfunc is defined in linux/config.h) */ extern int add_isr (unsigned long source, isrfunc isr, int pri, void *data, char *name); /* * This routine will remove an isr for the specified interrupt source. */ extern int remove_isr (unsigned long source, isrfunc isr); /* * This routine will insert an isr_node_t into a chain of nodes, using * the priority stored in the node. */ extern void insert_isr (isr_node_t **listp, isr_node_t *node); /* * This routine will delete the isr node for isr from a chain of nodes */ extern void delete_isr (isr_node_t **listp, isrfunc isr); /* * This routine may be used to call the isr routines in the passed list. */ extern void call_isr_list (int irq, isr_node_t *p, struct pt_regs *fp); #endif /* _M68K_IRQ_H_ */ |