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-rw-r--r--include/asm-arm26/irqchip.h101
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 0000000..6a007a9
--- /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
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