1 files changed, 68 insertions, 0 deletions
diff --git a/usr.sbin/bhyve/atpic.c b/usr.sbin/bhyve/atpic.c
new file mode 100644
index 0000000..a9fb084
--- /dev/null
+++ b/usr.sbin/bhyve/atpic.c
@@ -0,0 +1,68 @@
+/*-
+ * Copyright (c) 2011 NetApp, Inc.
+ * 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 NETAPP, INC ``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 NETAPP, INC OR CONTRIBUTORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+
+#include "inout.h"
+
+/*
+ * FreeBSD only writes to the 8259 interrupt controllers to put them in a
+ * shutdown state.
+ *
+ * So, we just ignore the writes.
+ */
+
+#define	IO_ICU1		0x20
+#define	IO_ICU2		0xA0
+#define	ICU_IMR_OFFSET	1
+
+static int
+atpic_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
+	      uint32_t *eax, void *arg)
+{
+	if (bytes != 1)
+		return (-1);
+
+	if (in)
+		return (-1);
+
+	/* Pretend all writes to the 8259 are alright */
+	return (0);
+}
+
+INOUT_PORT(atpic, IO_ICU1, IOPORT_F_INOUT, atpic_handler);
+INOUT_PORT(atpic, IO_ICU1 + ICU_IMR_OFFSET, IOPORT_F_INOUT, atpic_handler);
+INOUT_PORT(atpic, IO_ICU2, IOPORT_F_INOUT, atpic_handler);
+INOUT_PORT(atpic, IO_ICU2 + ICU_IMR_OFFSET, IOPORT_F_INOUT, atpic_handler);