#ifndef _M68K_IRQ_H_
#define _M68K_IRQ_H_
-#include <linux/config.h>
-#include <linux/interrupt.h>
-
-/*
- * # of m68k interrupts
- */
-
-#define SYS_IRQS 8
+#include <linux/linkage.h>
+#include <linux/hardirq.h>
+#include <linux/spinlock_types.h>
/*
* 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_ATARI) || defined(CONFIG_MAC)
-#define NR_IRQS (72+SYS_IRQS)
+#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
#else
-#define NR_IRQS (24+SYS_IRQS)
+#error unknown nr of irqs
+#endif
+
+/*
+ * The hardirq mask has to be large enough to have
+ * space for potentially all IRQ sources in the system
+ * nesting on a single CPU:
+ */
+#if (1 << HARDIRQ_BITS) < NR_IRQS
+# error HARDIRQ_BITS is too low!
#endif
/*
* 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 */
+#define IRQ_SPURIOUS 0
-static __inline__ int irq_canonicalize(int irq)
-{
- return irq;
-}
+#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) */
-/*
- * 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
- */
+#define IRQ_USER 8
-extern void (*enable_irq)(unsigned int);
-extern void (*disable_irq)(unsigned int);
-#define enable_irq_nosync enable_irq
+extern unsigned int irq_canonicalize(unsigned int irq);
+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 - SA_INTERRUPT and SA_SHIRQ
* interrupt source (if it supports chaining).
*/
typedef struct irq_node {
- irqreturn_t (*handler)(int, void *, struct pt_regs *);
- unsigned long flags;
+ int (*handler)(int, void *, struct pt_regs *);
void *dev_id;
- const char *devname;
struct irq_node *next;
+ unsigned long flags;
+ const char *devname;
} irq_node_t;
/*
* This structure has only 4 elements for speed reasons
*/
typedef struct irq_handler {
- irqreturn_t (*handler)(int, void *, struct pt_regs *);
+ int (*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;
+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);
/*
* This function returns a new irq_node_t
*/
extern irq_node_t *new_irq_node(void);
-struct irqaction;
-struct pt_regs;
-int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *);
+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 *);
#endif /* _M68K_IRQ_H_ */
git.openpandora.org / pandora-kernel.git / blobdiff