Add interrupt handling support code.

I've tried to make this fairly platform-independant as some PowerPC platforms
may not have openpic-style interrupt controllers.  This may not have the best
performance but it works for now.

1 files changed, 49 insertions, 0 deletions

diff --git a/sys/powerpc/include/intr_machdep.h b/sys/powerpc/include/intr_machdep.h
new file mode 100644
index 0000000..e01ebce
--- /dev/null
+++ b/sys/powerpc/include/intr_machdep.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2002 Benno Rice.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef	_MACHINE_INTR_MACHDEP_H_
+#define	_MACHINE_INTR_MACHDEP_H_
+
+typedef void	ih_func_t(void *);
+
+struct ithd;
+
+struct intr_handler {
+	ih_func_t	*ih_func;
+	void		*ih_arg;
+	struct		ithd *ih_ithd;
+	u_int		ih_irq;
+};
+
+void	intr_init(void (*)(void), int, void (*)(int), void (*)(int));
+void	intr_setup(u_int, ih_func_t *, void *);
+int	inthand_add(const char *, u_int, void (*)(void *), void *, int,
+	    void **);
+int	inthand_remove(u_int, void *);
+void	intr_handle(u_int);
+
+#endif /* _MACHINE_INTR_MACHDEP_H_ */