[src/trunk]: src/sys Add driver for DesignWare 32-bit timer as found in Rockc...

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/3222e393e99f
branches:  trunk
changeset: 335613:3222e393e99f
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sat Jan 17 15:04:47 2015 +0000

description:
Add driver for DesignWare 32-bit timer as found in Rockchip RK3066/PX2,
from FUKAUMI Naoki <fun%naobsd.org@localhost>

diffstat:

 sys/conf/files           |   6 +++-
 sys/dev/ic/dwc_tmr.c     |  75 ++++++++++++++++++++++++++++++++++++++++++++++++
 sys/dev/ic/dwc_tmr_reg.h |  41 ++++++++++++++++++++++++++
 sys/dev/ic/dwc_tmr_var.h |  45 ++++++++++++++++++++++++++++
 4 files changed, 166 insertions(+), 1 deletions(-)

diffs (193 lines):

diff -r 56a01885ae71 -r 3222e393e99f sys/conf/files
--- a/sys/conf/files    Sat Jan 17 12:23:31 2015 +0000
+++ b/sys/conf/files    Sat Jan 17 15:04:47 2015 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: files,v 1.1125 2015/01/16 10:36:14 ozaki-r Exp $
+#      $NetBSD: files,v 1.1126 2015/01/17 15:04:47 jmcneill Exp $
 #      @(#)files.newconf       7.5 (Berkeley) 5/10/93
 
 version        20141030
@@ -1098,6 +1098,10 @@
 device         hpet
 file   dev/ic/hpet.c           hpet                    needs-flag
 
+# DesignWare timer
+device dwctmr
+file   dev/ic/dwc_tmr.c        dwctmr
+
 # SMSC LAN9118 Family Ethernet Controller
 #
 device smsh: arp, ether, ifnet, mii
diff -r 56a01885ae71 -r 3222e393e99f sys/dev/ic/dwc_tmr.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/ic/dwc_tmr.c      Sat Jan 17 15:04:47 2015 +0000
@@ -0,0 +1,75 @@
+/* $NetBSD: dwc_tmr.c,v 1.1 2015/01/17 15:04:47 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
+ * 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 ``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>
+__KERNEL_RCSID(0, "$NetBSD: dwc_tmr.c,v 1.1 2015/01/17 15:04:47 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/intr.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/timetc.h>
+
+#include <dev/ic/dwc_tmr_reg.h>
+#include <dev/ic/dwc_tmr_var.h>
+
+#define TIMER_READ(sc, reg) \
+    bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg))
+#define TIMER_WRITE(sc, reg, val) \
+    bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val))
+
+static u_int   dwc_tmr_get_timecount(struct timecounter *);
+
+void
+dwc_tmr_attach_subr(struct dwc_tmr_softc *sc, u_int64_t freq)
+{
+
+       TIMER_WRITE(sc, DWC_TMR_CONTROL_REG, 0);
+       TIMER_WRITE(sc, DWC_TMR_LOAD_COUNT_REG, ~0);
+       TIMER_WRITE(sc, DWC_TMR_CONTROL_REG, DWC_TMR_CONTROL_ENABLE);
+
+       sc->sc_tc.tc_get_timecount = dwc_tmr_get_timecount;
+       sc->sc_tc.tc_poll_pps = NULL;
+       sc->sc_tc.tc_counter_mask = ~0;
+       sc->sc_tc.tc_frequency = freq;
+       sc->sc_tc.tc_name = device_xname(sc->sc_dev);
+       sc->sc_tc.tc_priv = sc;
+       sc->sc_tc.tc_quality = 900;
+
+       tc_init(&sc->sc_tc);
+}
+
+static u_int
+dwc_tmr_get_timecount(struct timecounter *tc)
+{
+       struct dwc_tmr_softc *sc = tc->tc_priv;
+
+       return ~TIMER_READ(sc, DWC_TMR_CURRENT_VALUE_REG);
+}
diff -r 56a01885ae71 -r 3222e393e99f sys/dev/ic/dwc_tmr_reg.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/ic/dwc_tmr_reg.h  Sat Jan 17 15:04:47 2015 +0000
@@ -0,0 +1,41 @@
+/* $NetBSD: dwc_tmr_reg.h,v 1.1 2015/01/17 15:04:47 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
+ * 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 ``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.
+ */
+
+#ifndef _DWC_TMR_REG_H
+#define _DWC_TMR_REG_H
+
+#define DWC_TMR_LOAD_COUNT_REG         0x0000
+#define DWC_TMR_CURRENT_VALUE_REG      0x0004
+#define DWC_TMR_CONTROL_REG            0x0008
+#define DWC_TMR_INTSTATUS_REG          0x0010
+
+#define DWC_TMR_CONTROL_INTERRUPT_MASK __BIT(2)
+#define DWC_TMR_CONTROL_MODE           __BIT(1)
+#define DWC_TMR_CONTROL_ENABLE         __BIT(0)
+
+#endif /* !_DWC_TMR_REG_H */
diff -r 56a01885ae71 -r 3222e393e99f sys/dev/ic/dwc_tmr_var.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/ic/dwc_tmr_var.h  Sat Jan 17 15:04:47 2015 +0000
@@ -0,0 +1,45 @@
+/* $NetBSD: dwc_tmr_var.h,v 1.1 2015/01/17 15:04:47 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
+ * 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 ``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.
+ */
+
+#ifndef _DWC_TMR_VAR_H
+#define _DWC_TMR_VAR_H
+
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/timetc.h>
+
+struct dwc_tmr_softc {
+       device_t sc_dev;
+       bus_space_tag_t sc_bst;
+       bus_space_handle_t sc_bsh;
+       struct timecounter sc_tc;
+};
+
+void   dwc_tmr_attach_subr(struct dwc_tmr_softc *, u_int64_t);
+
+#endif /* !_DWC_TMR_VAR_H */