This is rtc, a kernel module for /dev/rtc device support.

Some apps such as VMware for Linux would be happy with it.

The code was originally written by Vladimir N. Silyaev.

Note: It _includes_ Linux ioctl support, but basically it's
FreeBSD native stuff.  I'm importing this into emulators
category for convevience' sake.   Check it out.

1 files changed, 70 insertions, 0 deletions

diff --git a/emulators/rtc/files/rtc_linux.c b/emulators/rtc/files/rtc_linux.c
new file mode 100644
index 000000000000..2eb04a433890
--- /dev/null
+++ b/emulators/rtc/files/rtc_linux.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright by Vladimir N. Silyaev 2000
+ *
+ * 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 THE AUTHOR AND CONTRIBUTORS ``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 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.
+ *
+ * $vmFreeBSD: vmware/vmnet-only/freebsd/vmnet_linux.c,v 1.5 2000/01/23 22:29:50 vsilyaev Exp $
+ */
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/sockio.h>
+#include <sys/sysproto.h>
+#include <sys/socket.h>
+
+#include <i386/linux/linux.h>
+#include <i386/linux/linux_proto.h>
+#include <i386/linux/linux_ioctl.h>
+
+#include "rtc.h"
+
+#define DEBUG 0
+#if DEBUG
+#define DEB(x) x
+#else /* !DEBUG */
+#define DEB(x)
+#endif /* DEBUG */
+
+#define LINUX_IOCTL_SET(n,low,high) \
+static linux_ioctl_function_t linux_ioctl_##n; \
+static struct linux_ioctl_handler n##_handler = {linux_ioctl_##n, low, high }; \
+SYSINIT(n##register, SI_SUB_KLD, SI_ORDER_MIDDLE, linux_ioctl_register_handler, &n##_handler); \
+SYSUNINIT(n##unregister, SI_SUB_KLD, SI_ORDER_MIDDLE, linux_ioctl_unregister_handler, &n##_handler);
+
+#define LINUX_RTC_PIE_ON	0x7005
+#define LINUX_RTC_IRQP_SET	0x700C
+
+LINUX_IOCTL_SET(rtc, 0x7000, 0x70ff);
+
+static int
+linux_ioctl_rtc(struct proc *p, struct linux_ioctl_args *args)
+{
+	switch (args->cmd & 0xffff) {
+	case LINUX_RTC_PIE_ON:
+		args->cmd=RTCIO_PIE_ON;
+		return ioctl(p, (struct ioctl_args*)args);	
+	case LINUX_RTC_IRQP_SET:
+		args->cmd=RTCIO_IRQP_SET;
+		return ioctl(p, (struct ioctl_args*)args);	
+	}
+	return (ENOIOCTL);
+}