m68k: merge mmu and non-mmu versions of irq.h

It is reasonably strait forward to merge the mmu and non-mmu versions
of irq.h. Most of the defines and structs are not needed on non-mmu.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>

1 files changed, 132 insertions, 3 deletions

diff --git a/arch/m68k/include/asm/irq.h b/arch/m68k/include/asm/irq.h
index d031416..907eff1 100644
--- a/arch/m68k/include/asm/irq.h
+++ b/arch/m68k/include/asm/irq.h
@@ -1,5 +1,134 @@
-#ifdef __uClinux__
-#include "irq_no.h"
+#ifndef _M68K_IRQ_H_
+#define _M68K_IRQ_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_COLDFIRE)
+#define NR_IRQS 256
+#elif 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) || !defined(CONFIG_MMU)
+#define NR_IRQS	32
+#elif defined(CONFIG_APOLLO)
+#define NR_IRQS	24
+#elif defined(CONFIG_HP300)
+#define NR_IRQS	8
 #else
-#include "irq_mm.h"
+#define NR_IRQS	0
 #endif
+
+#ifdef CONFIG_MMU
+
+#include <linux/linkage.h>
+#include <linux/hardirq.h>
+#include <linux/irqreturn.h>
+#include <linux/spinlock_types.h>
+
+/*
+ * 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
+
+/*
+ * 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 IRQ_SPURIOUS	0
+
+#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) */
+
+#define IRQ_USER	8
+
+extern unsigned int irq_canonicalize(unsigned int irq);
+
+struct pt_regs;
+
+/*
+ * various flags for request_irq() - the Amiga now uses the standard
+ * mechanism like all other architectures - IRQF_DISABLED and
+ * IRQF_SHARED are your friends.
+ */
+#ifndef MACH_AMIGA_ONLY
+#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		*/
+#endif
+
+/*
+ * This structure is used to chain together the ISRs for a particular
+ * interrupt source (if it supports chaining).
+ */
+typedef struct irq_node {
+	irqreturn_t	(*handler)(int, void *);
+	void		*dev_id;
+	struct irq_node *next;
+	unsigned long	flags;
+	const char	*devname;
+} irq_node_t;
+
+/*
+ * This structure has only 4 elements for speed reasons
+ */
+struct irq_handler {
+	int		(*handler)(int, void *);
+	unsigned long	flags;
+	void		*dev_id;
+	const char	*devname;
+};
+
+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);
+
+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);
+asmlinkage void __m68k_handle_int(unsigned int, struct pt_regs *);
+
+#else
+#define irq_canonicalize(irq)  (irq)
+#endif /* CONFIG_MMU */
+
+#endif /* _M68K_IRQ_H_ */