Import of Linux/MIPS 2.1.14

1 files changed, 96 insertions, 1 deletions

diff --git a/include/asm-m68k/irq.h b/include/asm-m68k/irq.h
index c8f300ca8..7789be42f 100644
--- a/include/asm-m68k/irq.h
+++ b/include/asm-m68k/irq.h
@@ -1,6 +1,101 @@
 #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>
+
+/*
+ * # of m68k interrupts
+ */
+
+#define SYS_IRQS 8
+
+/*
+ * 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+SYS_IRQS)
+#else
+#define NR_IRQS (24+SYS_IRQS)
+#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)
+#define IRQ_IDX(irq)	((irq) & ~IRQ_MACHSPEC)
+
+/*
+ * various flags for request_irq()
+ */
+#define IRQ_FLG_LOCK	(0x0001)	/* handler is not replaceable	*/
+#define IRQ_FLG_REPLACE	(0x0002)	/* replace existing handler	*/
+#define IRQ_FLG_FAST	(0x0004)
+#define IRQ_FLG_SLOW	(0x0008)
+#define IRQ_FLG_STD	(0x8000)	/* internally used		*/
+
+/*
+ * This structure is used to chain together the ISRs for a particular
+ * interrupt source (if it supports chaining).
+ */
+typedef struct irq_node {
+	void		(*handler)(int, void *, struct pt_regs *);
+	unsigned long	flags;
+	void		*dev_id;
+	const char	*devname;
+	struct irq_node *next;
+} irq_node_t;
+
+/*
+ * This structure has only 4 elements for speed reasons
+ */
+typedef struct irq_handler {
+	void		(*handler)(int, void *, struct pt_regs *);
+	unsigned long	flags;
+	void		*dev_id;
+	const char	*devname;
+} irq_handler_t;
+
+/* count of spurious interrupts */
+extern volatile unsigned int num_spurious;
+
+/*
+ * This function returns a new irq_node_t
+ */
+extern irq_node_t *new_irq_node(void);
 
 #endif /* _M68K_IRQ_H_ */