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-rw-r--r--sys/dev/io/iodev.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/sys/dev/io/iodev.c b/sys/dev/io/iodev.c
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index 000000000000..d1b3170d8a5a
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+++ b/sys/dev/io/iodev.c
@@ -0,0 +1,89 @@
+/*-
+ * Copyright (c) 2004 Mark R V Murray
+ * 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
+ * in this position and unchanged.
+ * 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 THE AUTHORS ``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 THE AUTHOR 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.
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/conf.h>
+#include <sys/fcntl.h>
+#include <sys/kernel.h>
+#include <sys/lock.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/proc.h>
+#include <sys/signalvar.h>
+#include <sys/systm.h>
+#include <sys/uio.h>
+
+#include <machine/specialreg.h>
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+
+#include <machine/iodev.h>
+
+static struct cdev *iodev;
+
+static struct cdevsw io_cdevsw = {
+ .d_version = D_VERSION,
+ .d_flags = D_NEEDGIANT,
+ .d_open = ioopen,
+ .d_close = ioclose,
+ .d_name = "io",
+};
+
+/* ARGSUSED */
+static int
+io_modevent(module_t mod __unused, int type, void *data __unused)
+{
+ switch(type) {
+ case MOD_LOAD:
+ if (bootverbose)
+ printf("io: <I/O>\n");
+ iodev = make_dev(&io_cdevsw, CDEV_MINOR_IO,
+ UID_ROOT, GID_WHEEL, 0600, "io");
+ break;
+
+ case MOD_UNLOAD:
+ destroy_dev(iodev);
+ break;
+
+ case MOD_SHUTDOWN:
+ break;
+
+ default:
+ return(EOPNOTSUPP);
+ break;
+
+ }
+
+ return (0);
+}
+
+DEV_MODULE(io, io_modevent, NULL);