1 files changed, 101 insertions, 0 deletions
diff --git a/include/asm-arm26/irqchip.h b/include/asm-arm26/irqchip.h
new file mode 100644
index 00000000000..6a007a95409
--- /dev/null
+++ b/include/asm-arm26/irqchip.h
@@ -0,0 +1,101 @@
+/*
+ *  linux/include/asm-arm/mach/irq.h
+ *
+ *  Copyright (C) 1995-2000 Russell King.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_ARM_MACH_IRQ_H
+#define __ASM_ARM_MACH_IRQ_H
+
+struct irqdesc;
+struct pt_regs;
+struct seq_file;
+
+typedef void (*irq_handler_t)(unsigned int, struct irqdesc *, struct pt_regs *);
+typedef void (*irq_control_t)(unsigned int);
+
+struct irqchip {
+	/*
+	 * Acknowledge the IRQ.
+	 * If this is a level-based IRQ, then it is expected to mask the IRQ
+	 * as well.
+	 */
+	void (*ack)(unsigned int);
+	/*
+	 * Mask the IRQ in hardware.
+	 */
+	void (*mask)(unsigned int);
+	/*
+	 * Unmask the IRQ in hardware.
+	 */
+	void (*unmask)(unsigned int);
+	/*
+	 * Re-run the IRQ
+	 */
+	void (*rerun)(unsigned int);
+	/*
+	 * Set the type of the IRQ.
+	 */
+	int (*type)(unsigned int, unsigned int);
+};
+
+struct irqdesc {
+	irq_handler_t	handle;
+	struct irqchip	*chip;
+	struct irqaction *action;
+
+	unsigned int	enabled  : 1;		/* IRQ is currently enabled   */
+	unsigned int	triggered: 1;		/* IRQ has occurred	      */
+	unsigned int	running  : 1;		/* IRQ is running             */
+	unsigned int	pending  : 1;		/* IRQ is pending	      */
+	unsigned int	probing  : 1;		/* IRQ in use for a probe     */
+	unsigned int	probe_ok : 1;		/* IRQ can be used for probe  */
+	unsigned int	valid    : 1;		/* IRQ claimable	      */
+	unsigned int	noautoenable : 1;	/* don't automatically enable IRQ */
+	unsigned int	unused   :23;
+	unsigned int	depth;			/* disable depth	      */
+
+	/*
+	 * IRQ lock detection
+	 */
+	unsigned int	lck_cnt;
+	unsigned int	lck_pc;
+	unsigned int	lck_jif;
+};
+
+extern struct irqdesc irq_desc[];
+
+/*
+ * This is internal.  Do not use it.
+ */
+extern void (*init_arch_irq)(void);
+extern void init_FIQ(void);
+extern int show_fiq_list(struct seq_file *, void *);
+void __set_irq_handler(unsigned int irq, irq_handler_t, int);
+
+/*
+ * External stuff.
+ */
+#define set_irq_handler(irq,handler)		__set_irq_handler(irq,handler,0)
+#define set_irq_chained_handler(irq,handler)	__set_irq_handler(irq,handler,1)
+
+void set_irq_chip(unsigned int irq, struct irqchip *);
+void set_irq_flags(unsigned int irq, unsigned int flags);
+
+#define IRQF_VALID	(1 << 0)
+#define IRQF_PROBE	(1 << 1)
+#define IRQF_NOAUTOEN	(1 << 2)
+
+/*
+ * Built-in IRQ handlers.
+ */
+void do_level_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs);
+void do_edge_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs);
+void do_simple_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs);
+void do_bad_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs);
+void dummy_mask_unmask_irq(unsigned int irq);
+
+#endif