1 files changed, 125 insertions, 0 deletions

diff --git a/arch/m68k/include/asm/irq_mm.h b/arch/m68k/include/asm/irq_mm.h
new file mode 100644
index 000000000000..226bfc0f21b1
--- /dev/null
+++ b/arch/m68k/include/asm/irq_mm.h
@@ -0,0 +1,125 @@
+#ifndef _M68K_IRQ_H_
+#define _M68K_IRQ_H_
+
+#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
+ * 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_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 0
+#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
+
+/*
+ * 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 {
+        int             (*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 *);
+
+#endif /* _M68K_IRQ_H_ */