#ifndef _M68K_IRQ_H_
#define _M68K_IRQ_H_
-#include <linux/linkage.h>
-#include <linux/hardirq.h>
-#include <linux/spinlock_types.h>
+#include <linux/config.h>
+#include <linux/interrupt.h>
+
+/*
+ * # of m68k interrupts
+ */
+
+#define SYS_IRQS 8
/*
* This should be the same as the max(NUM_X_SOURCES) for all the
* 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_VME) || defined(CONFIG_SUN3) || defined(CONFIG_SUN3X)
-#define NR_IRQS 200
-#elif defined(CONFIG_ATARI) || defined(CONFIG_MAC)
-#define NR_IRQS 72
-#elif defined(CONFIG_Q40)
-#define NR_IRQS 43
-#elif defined(CONFIG_AMIGA)
-#define NR_IRQS 32
-#elif defined(CONFIG_APOLLO)
-#define NR_IRQS 24
-#elif defined(CONFIG_HP300)
-#define NR_IRQS 8
+#if defined(CONFIG_ATARI) || defined(CONFIG_MAC)
+#define NR_IRQS (72+SYS_IRQS)
#else
-#error unknown nr of irqs
+#define NR_IRQS (24+SYS_IRQS)
#endif
/*
* that routine requires service.
*/
-#define IRQ_SPURIOUS 0
+#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) */
-#define IRQ_AUTO_1 1 /* level 1 interrupt */
-#define IRQ_AUTO_2 2 /* level 2 interrupt */
-#define IRQ_AUTO_3 3 /* level 3 interrupt */
-#define IRQ_AUTO_4 4 /* level 4 interrupt */
-#define IRQ_AUTO_5 5 /* level 5 interrupt */
-#define IRQ_AUTO_6 6 /* level 6 interrupt */
-#define IRQ_AUTO_7 7 /* level 7 interrupt (non-maskable) */
+/*
+ * "Generic" interrupt sources
+ */
+
+#define IRQ_SCHED_TIMER (8) /* interrupt source for scheduling timer */
-#define IRQ_USER 8
+static __inline__ int irq_canonicalize(int irq)
+{
+ return irq;
+}
+
+/*
+ * 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.
+ *
+ * The IRQ_MACHSPEC bit is now gone - the only thing it did was to
+ * introduce unnecessary overhead.
+ *
+ * All interrupt handling is actually machine specific so it is better
+ * to use function pointers, as used by the Sparc port, and select the
+ * interrupt handling functions when initializing the kernel. This way
+ * we save some unnecessary overhead at run-time.
+ * 01/11/97 - Jes
+ */
-extern unsigned int irq_canonicalize(unsigned int irq);
-extern void enable_irq(unsigned int);
-extern void disable_irq(unsigned int);
+extern void (*enable_irq)(unsigned int);
+extern void (*disable_irq)(unsigned int);
#define disable_irq_nosync disable_irq
struct pt_regs;
+extern int cpu_request_irq(unsigned int,
+ irqreturn_t (*)(int, void *, struct pt_regs *),
+ unsigned long, const char *, void *);
+extern void cpu_free_irq(unsigned int, void *);
+
/*
* various flags for request_irq() - the Amiga now uses the standard
- * mechanism like all other architectures - IRQF_DISABLED and
- * IRQF_SHARED are your friends.
+ * mechanism like all other architectures - SA_INTERRUPT and SA_SHIRQ
+ * are your friends.
*/
#ifndef MACH_AMIGA_ONLY
#define IRQ_FLG_LOCK (0x0001) /* handler is not replaceable */
* interrupt source (if it supports chaining).
*/
typedef struct irq_node {
- int (*handler)(int, void *, struct pt_regs *);
- void *dev_id;
- struct irq_node *next;
+ irqreturn_t (*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 {
- int (*handler)(int, void *, struct pt_regs *);
+ irqreturn_t (*handler)(int, void *, struct pt_regs *);
unsigned long flags;
void *dev_id;
const char *devname;
} irq_handler_t;
-struct irq_controller {
- const char *name;
- spinlock_t lock;
- int (*startup)(unsigned int irq);
- void (*shutdown)(unsigned int irq);
- void (*enable)(unsigned int irq);
- void (*disable)(unsigned int irq);
-};
-
-extern int m68k_irq_startup(unsigned int);
-extern void m68k_irq_shutdown(unsigned int);
+/* 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);
-extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int, struct pt_regs *));
-extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
- void (*handler)(unsigned int, struct pt_regs *));
-extern void m68k_setup_irq_controller(struct irq_controller *, unsigned int, unsigned int);
-
-asmlinkage void m68k_handle_int(unsigned int, struct pt_regs *);
+struct irqaction;
+struct pt_regs;
+int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *);
#endif /* _M68K_IRQ_H_ */
git://git.onelab.eu / linux-2.6.git / blobdiff