patch-1.3.94 linux/include/asm-m68k/irq.h

• Lines: 118
• Date: Mon Apr 1 22:16:35 1996
• Orig file: v1.3.93/linux/include/asm-m68k/irq.h
• Orig date: Mon Nov 28 21:03:09 1994

diff -u --recursive --new-file v1.3.93/linux/include/asm-m68k/irq.h linux/include/asm-m68k/irq.h
@@ -1,6 +1,116 @@
 #ifndef _M68K_IRQ_H_
 #define _M68K_IRQ_H_
 
-/* dummy for m68k */
+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_ */