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 000000000000..6a007a954098
--- /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