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.

10 files changed, 553 insertions, 0 deletions

diff --git a/emulators/rtc/Makefile b/emulators/rtc/Makefile
new file mode 100644
index 0000000..c9ad042
--- /dev/null
+++ b/emulators/rtc/Makefile
@@ -0,0 +1,59 @@
+# New ports collection makefile for:	rtc
+# Version required:	2000.03.28
+# Date created:		28 March 2000
+# Whom:			Akinori MUSHA aka knu <knu@idaemons.org>
+#
+# $FreeBSD$
+#
+
+DISTNAME=	rtc-2000.03.28
+CATEGORIES=	emulators linux
+MASTER_SITES=	# none
+DISTFILES=	# none
+
+MAINTAINER=	freebsd-emulation@FreeBSD.org
+
+WRKSRC=		${WRKDIR}/files
+
+LINUX_DIR=	/compat/linux
+KMODDIR=	${PREFIX}/modules
+
+CDEV_MAJOR=	202
+DEVFILE=	/dev/rtc
+
+STARTUP=	rtc.sh
+MAKE_ARGS=	KMODDIR="${KMODDIR}" CDEV_MAJOR="${CDEV_MAJOR}"
+PLIST_SUB=	DEVFILE="${DEVFILE}" CDEV_MAJOR="${CDEV_MAJOR}" RTC_H_DIR="${RTC_H_DIR}"
+
+.include <bsd.port.pre.mk>
+
+.if ${OSVERSION} < 400013
+BROKEN=         "Systems prior to 400013 is out of support"
+.endif
+
+.if !exists(/sys/Makefile)
+BROKEN=         "Kernel source files required"
+.endif
+
+do-fetch:
+	@${ECHO} "I don't fetch anything..."
+
+do-extract:
+	@${MKDIR} ${WRKSRC}
+	@${SED}	-e 's,@@PREFIX@@,${PREFIX},' \
+		${FILESDIR}/${STARTUP} > ${WRKDIR}/${STARTUP}
+	@cd ${FILESDIR} && ${CP} Makefile *.[ch] ${WRKSRC}/
+
+pre-install:
+	${MKDIR} ${KMODDIR}
+
+post-install:
+	${RM} -f ${DEVFILE}
+	mknod ${DEVFILE} c ${CDEV_MAJOR} 0
+	${INSTALL_DATA} ${WRKSRC}/rtc.h ${PREFIX}/include/
+	${MKDIR} ${PREFIX}/share/examples/rtc
+	${INSTALL_DATA} ${WRKSRC}/test.c ${PREFIX}/share/examples/rtc/
+	@${ECHO} "Installing ${PREFIX}/etc/rc.d/${STARTUP} startup file.";
+	${INSTALL_SCRIPT} ${WRKDIR}/${STARTUP} ${PREFIX}/etc/rc.d/
+
+.include <bsd.port.post.mk>
diff --git a/emulators/rtc/files/Makefile b/emulators/rtc/files/Makefile
new file mode 100644
index 0000000..4176d4f
--- /dev/null
+++ b/emulators/rtc/files/Makefile
@@ -0,0 +1,50 @@
+# Copyright 2000 Vladimir N.Silyaev
+# 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 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.
+#
+
+SYS?=		/sys
+NOMAN=		YES
+KMOD=		rtc
+CDEV_MAJOR?=	202
+DEVNAME= 	${KMOD}
+SRCS=		rtc.c rtc_linux.c vnode_if.h
+
+
+INCLUDE=	-I${.CURDIR} -I${SYS}
+
+CFLAGS+=	${INCLUDE} -DCDEV_MAJOR_=${CDEV_MAJOR}
+
+all:	vnode_if.h
+
+@:
+	@${ECHO} ${.TARGET} "->" ${SYS}
+	@ln -s ${SYS} ${.TARGET}
+
+#afterinstall: device
+
+device:
+	rm -f /dev/${DEVNAME} 
+	mknod /dev/${DEVNAME} c ${CDEV_MAJOR} 0
+
+.include <bsd.kmod.mk>
diff --git a/emulators/rtc/files/rtc.c b/emulators/rtc/files/rtc.c
new file mode 100644
index 0000000..9623b2f
--- /dev/null
+++ b/emulators/rtc/files/rtc.c
@@ -0,0 +1,288 @@
+/*
+ * 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.c,v 1.14 2000/01/23 22:29:50 vsilyaev Exp $
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/mbuf.h>
+#include <sys/sockio.h>
+#include <sys/socket.h>
+#include <sys/filio.h>
+#include <sys/poll.h>
+#include <sys/uio.h>
+#include <sys/vnode.h>
+
+#include <machine/clock.h>
+
+#include "rtc.h"
+
+#define CDEV_MAJOR 202
+#if defined(CDEV_MAJOR_) && CDEV_MAJOR != CDEV_MAJOR_
+#error "CDEV_MAJOR != CDEV_MAJOR_"
+#endif
+
+#define	DEVICE_NAME	"rtc"
+
+enum rtc_log_level {Lenter=0, Lexit=1, Linfo, Lwarning, Lfail};
+#define DEBUG 0
+#if DEBUG
+#define DEB(x) x
+#define DLog(level, fmt, args...)	printf("%s: " fmt "\n", __FUNCTION__ ,   ##args)
+#else /* !DEBUG */
+#define DEB(x)
+#define	DLog(level, fmt, args...) 
+#endif /* DEBUG */
+
+struct rtc_softc {
+	dev_t		dev; /* Back reference to device */
+	struct {
+	 int	freq;
+	 struct {
+		int	opened:1;
+		int 	enabled:1;
+	 } flags;
+	} var;
+};
+
+static struct rtc_softc *rtc_sc=NULL;
+
+static d_open_t		rtc_open;
+static d_close_t 	rtc_close;
+static d_ioctl_t	rtc_ioctl;
+static d_poll_t		rtc_poll;
+
+static int rtc_modeevent(module_t mod, int cmd, void *arg);
+
+static struct cdevsw rtc_cdevsw = {
+	/* open */	rtc_open,
+	/* close */	rtc_close,
+	/* read */	noread,
+	/* write */	nowrite,
+	/* ioctl */	rtc_ioctl,
+	/* poll */	rtc_poll,
+	/* mmap */	nommap,
+	/* strategy */	nostrategy,
+	/* name */	DEVICE_NAME,
+	/* maj */	CDEV_MAJOR,
+	/* dump */	nodump,
+	/* psize */	nopsize,
+	/* flags */	0,
+	/* bmaj */	-1
+};
+
+/* 
+ * Now declare the module to the system. 
+ * IMPORTANT: Must be before netgraph node declaration.
+ */
+DEV_MODULE(rtc, rtc_modeevent, 0);
+
+
+/* -=-=-=-=-=-=-=-=-= attach/detach device stuff -=-=-=-=-=-=-=-=-= */
+
+static struct rtc_softc *
+rtc_attach(dev_t dev)
+{
+	struct rtc_softc *sc;
+	int unit;
+
+	unit = lminor(dev);
+	DLog(Lenter, "%d %p", unit, dev);
+	if (dev->si_drv1) {
+		DLog(Lexit, "old %p, %p", dev, dev->si_drv1);
+		return dev->si_drv1;
+	}
+
+	if (rtc_sc!=NULL)
+		return NULL;
+
+  	dev = make_dev(&rtc_cdevsw, minor(dev), UID_ROOT, GID_WHEEL, 0600, DEVICE_NAME); 
+	if (dev==NULL)
+		return (NULL);
+
+	MALLOC(sc, struct rtc_softc*, sizeof(*sc), M_DEVBUF, M_WAITOK);
+	if (sc==NULL)
+		return NULL;
+
+	bzero(sc, sizeof(*sc));
+	rtc_sc = sc;
+	dev->si_drv1 = sc; /* Link together */
+	sc->dev = dev;
+	
+	DLog(Lexit, "new %p,%p", dev, sc);
+	return sc;
+}
+
+static int
+rtc_detach(struct rtc_softc *sc) 
+{
+	int error=0;
+
+	if (sc == NULL) {
+		return error;
+	}
+	if (sc->var.flags.opened) {
+		return EBUSY;
+	}
+	destroy_dev(sc->dev);
+	FREE(sc, M_DEVBUF);
+	return error;
+}
+
+/* -=-=-=-=-=-=-=-=-= character device stuff -=-=-=-=-=-=-=-=-= */
+
+int 
+rtc_open(dev_t dev, int oflag, int otyp, struct proc *p)
+{
+	struct rtc_softc *sc;
+	
+	sc = rtc_attach(dev);
+	
+	if (sc==NULL)
+		return (EAGAIN);
+	
+	if (sc->var.flags.opened)
+		return (EBUSY);
+	
+	bzero(&sc->var, sizeof(sc->var));
+
+	sc->var.flags.opened = 1;
+	
+	return 0;
+}
+
+int 
+rtc_close(dev_t dev, int fflag, int otyp, struct proc *p)
+{
+	struct rtc_softc *sc = (struct rtc_softc *) dev->si_drv1;
+
+	sc->var.flags.opened = 0;
+	return 0;
+}
+
+int 
+rtc_ioctl(dev_t dev, u_long cmd, caddr_t arg, int mode, struct proc *p)
+{
+	struct rtc_softc *sc = (struct rtc_softc *) dev->si_drv1;
+	int error=0;
+	
+	DLog(Lenter, "cmd 0x%04lx", cmd);
+	switch (cmd) {
+	case RTCIO_IRQP_SET:
+		sc->var.freq = *(int *)arg;
+		DLog(Linfo, "Set RTC freq %d", sc->var.freq);
+		break;
+	case RTCIO_PIE_ON:
+		sc->var.flags.enabled = 1;
+		DLog(Linfo, "Enable interrupts");
+		break;
+	default:
+		DLog(Lfail, "Unknown IOCTL 0x%04lx", cmd);
+		error = EINVAL;
+		break;
+	}
+	DLog(Lenter, "result %d", error);
+	return (error);
+}
+
+int 
+rtc_poll(dev_t dev, int events, struct proc *p)
+{
+	struct rtc_softc *sc = (struct rtc_softc *) dev->si_drv1;
+   	int revents = 0;
+	int delay;
+	
+	if (!sc->var.flags.enabled) 
+		return 0;
+
+	delay = 1000000/sc->var.freq;
+
+	if (events) {
+		DLog(Linfo, "Delay for %d usec", delay);
+		DELAY(delay);
+		revents = events;
+	}
+	return revents;
+}
+
+/* -=-=-=-=-=-=-=-=-= module load/unload stuff -=-=-=-=-=-=-=-=-= */
+static int
+init_module(void)
+{
+int error;
+
+   	error = cdevsw_add(&rtc_cdevsw);
+	if (error) 
+		return error;
+
+	return error;
+}
+
+
+
+static int
+cleanup_module(void)
+{
+	int error;
+	struct rtc_softc *sc;
+
+	sc = rtc_sc;
+	if ( (error=rtc_detach(sc)) !=0) {
+		DLog(Lfail, "%p busy", sc);
+		return error;
+	}
+	error = cdevsw_remove(&rtc_cdevsw);
+	DLog(Linfo, "return %d", error);
+	return error;
+}
+
+static int
+rtc_modeevent(module_t mod, int cmd, void *arg)
+{
+    int  error = 0;
+
+    switch (cmd) {
+    case MOD_LOAD:
+	error = init_module();
+	break;	
+
+    case MOD_UNLOAD:
+        /* fall through */
+    case MOD_SHUTDOWN:
+ 	error = cleanup_module();
+	break;
+
+    default:	/* we only understand load/unload */
+	error = EINVAL;
+	break;
+    }
+
+    return (error);
+}
+
+
diff --git a/emulators/rtc/files/rtc.h b/emulators/rtc/files/rtc.h
new file mode 100644
index 0000000..d3a151e
--- /dev/null
+++ b/emulators/rtc/files/rtc.h
@@ -0,0 +1,9 @@
+#ifndef RTC_H
+#define RTC_H
+
+
+#define RTCIO_PIE_ON		_IO('p', 0x05)
+#define RTCIO_IRQP_SET		_IO('p', 0x0c)
+
+#endif /* RTC_H */
+
diff --git a/emulators/rtc/files/rtc.sh b/emulators/rtc/files/rtc.sh
new file mode 100644
index 0000000..a39569c
--- /dev/null
+++ b/emulators/rtc/files/rtc.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+kmod=@@PREFIX@@/modules/rtc.ko
+
+if [ -x $kmod ]; then
+    echo -n ' rtc'
+    kldload $kmod
+fi
diff --git a/emulators/rtc/files/rtc_linux.c b/emulators/rtc/files/rtc_linux.c
new file mode 100644
index 0000000..2eb04a4
--- /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);
+}
diff --git a/emulators/rtc/files/test.c b/emulators/rtc/files/test.c
new file mode 100644
index 0000000..664441c
--- /dev/null
+++ b/emulators/rtc/files/test.c
@@ -0,0 +1,56 @@
+#include <sys/types.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/ioccom.h>
+
+#include "rtc.h"
+
+
+int main(void)
+{
+	int rtc;
+	fd_set rset;
+	int i,rc;
+	int ntests=100;
+	struct timeval tv;
+	struct timeval begin,end,delta;
+
+
+	rtc = open("/dev/rtc", O_RDONLY);	
+	if (rtc<0) {
+		perror("/dec/rtc");
+		return 1;
+	}
+
+	rc = ioctl(rtc, RTCIO_IRQP_SET, 512);
+	if (rc<0) {
+		perror("/dev/rtc");
+		return 1;
+	}
+
+	rc = ioctl(rtc, RTCIO_PIE_ON, NULL);
+	if (rc<0) {
+		perror("/dev/rtc");
+		return 1;
+	}
+	
+	gettimeofday(&begin, NULL);	
+	for (i=0; i<ntests; i++) {
+		FD_ZERO(&rset);
+		FD_SET(rtc, &rset);
+		tv.tv_sec=0;
+		tv.tv_usec=10000;
+		rc=select(rtc+1, &rset, NULL, NULL, &tv);
+	}	
+	gettimeofday(&end, NULL);
+	timersub(&end, &begin, &delta);
+	printf("time %ld msec per test\n", (delta.tv_sec*1000+delta.tv_usec/1000)/ntests);
+	return 0;
+}
+
+	
+
+
diff --git a/emulators/rtc/pkg-comment b/emulators/rtc/pkg-comment
new file mode 100644
index 0000000..3d28461
--- /dev/null
+++ b/emulators/rtc/pkg-comment
@@ -0,0 +1 @@
+Kernel module which provides /dev/rtc device support
diff --git a/emulators/rtc/pkg-descr b/emulators/rtc/pkg-descr
new file mode 100644
index 0000000..a1cd706
--- /dev/null
+++ b/emulators/rtc/pkg-descr
@@ -0,0 +1,4 @@
+This is 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.
diff --git a/emulators/rtc/pkg-plist b/emulators/rtc/pkg-plist
new file mode 100644
index 0000000..819306f
--- /dev/null
+++ b/emulators/rtc/pkg-plist
@@ -0,0 +1,8 @@
+etc/rc.d/rtc.sh
+include/rtc.h
+modules/rtc.ko
+share/examples/rtc/test.c
+@dirrm share/examples/rtc
+@exec rm -f %%DEVFILE%%
+@exec mknod %%DEVFILE%% c %%CDEV_MAJOR%% 0
+@unexec rm -f %%DEVFILE%%