10566170fSBjoern A. Zeeb /*-
24d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause
3718cf2ccSPedro F. Giffuni *
40566170fSBjoern A. Zeeb * Copyright (c) 2011 Sandvine Incorporated ULC.
51adb4ebdSXin LI * Copyright (c) 2012 iXsystems, Inc.
60566170fSBjoern A. Zeeb * All rights reserved.
70566170fSBjoern A. Zeeb *
80566170fSBjoern A. Zeeb * Redistribution and use in source and binary forms, with or without
90566170fSBjoern A. Zeeb * modification, are permitted provided that the following conditions
100566170fSBjoern A. Zeeb * are met:
110566170fSBjoern A. Zeeb * 1. Redistributions of source code must retain the above copyright
120566170fSBjoern A. Zeeb * notice, this list of conditions and the following disclaimer.
130566170fSBjoern A. Zeeb * 2. Redistributions in binary form must reproduce the above copyright
140566170fSBjoern A. Zeeb * notice, this list of conditions and the following disclaimer in the
150566170fSBjoern A. Zeeb * documentation and/or other materials provided with the distribution.
160566170fSBjoern A. Zeeb *
170566170fSBjoern A. Zeeb * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
180566170fSBjoern A. Zeeb * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
190566170fSBjoern A. Zeeb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
200566170fSBjoern A. Zeeb * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
210566170fSBjoern A. Zeeb * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
220566170fSBjoern A. Zeeb * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
230566170fSBjoern A. Zeeb * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
240566170fSBjoern A. Zeeb * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
250566170fSBjoern A. Zeeb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
260566170fSBjoern A. Zeeb * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
270566170fSBjoern A. Zeeb * SUCH DAMAGE.
280566170fSBjoern A. Zeeb */
290566170fSBjoern A. Zeeb /*
300566170fSBjoern A. Zeeb * Support for Winbond watchdog.
310566170fSBjoern A. Zeeb *
320566170fSBjoern A. Zeeb * With minor abstractions it might be possible to add support for other
330566170fSBjoern A. Zeeb * different Winbond Super I/O chips as well. Winbond seems to have four
340566170fSBjoern A. Zeeb * different types of chips, four different ways to get into extended config
350566170fSBjoern A. Zeeb * mode.
360566170fSBjoern A. Zeeb *
370566170fSBjoern A. Zeeb * Note: there is no serialization between the debugging sysctl handlers and
380566170fSBjoern A. Zeeb * the watchdog functions and possibly others poking the registers at the same
390566170fSBjoern A. Zeeb * time. For that at least possibly interfering sysctls are hidden by default.
400566170fSBjoern A. Zeeb */
410566170fSBjoern A. Zeeb
420566170fSBjoern A. Zeeb #include <sys/param.h>
430566170fSBjoern A. Zeeb #include <sys/kernel.h>
440566170fSBjoern A. Zeeb #include <sys/systm.h>
450566170fSBjoern A. Zeeb #include <sys/bus.h>
460566170fSBjoern A. Zeeb #include <sys/eventhandler.h>
470566170fSBjoern A. Zeeb #include <sys/module.h>
480566170fSBjoern A. Zeeb #include <sys/sbuf.h>
490566170fSBjoern A. Zeeb #include <sys/sysctl.h>
500566170fSBjoern A. Zeeb #include <sys/watchdog.h>
510566170fSBjoern A. Zeeb
52bc37ac7eSAndriy Gapon #include <dev/superio/superio.h>
530566170fSBjoern A. Zeeb
540566170fSBjoern A. Zeeb #include <machine/bus.h>
550566170fSBjoern A. Zeeb #include <machine/resource.h>
560566170fSBjoern A. Zeeb
570566170fSBjoern A. Zeeb /*
580566170fSBjoern A. Zeeb * Global registers.
590566170fSBjoern A. Zeeb */
600566170fSBjoern A. Zeeb #define WB_DEVICE_ID_REG 0x20 /* Device ID */
610566170fSBjoern A. Zeeb #define WB_DEVICE_REV_REG 0x21 /* Device revision */
620566170fSBjoern A. Zeeb #define WB_CR26 0x26 /* Bit6: HEFRAS (base port selector) */
630566170fSBjoern A. Zeeb
640566170fSBjoern A. Zeeb /* LDN selection. */
650566170fSBjoern A. Zeeb #define WB_LDN_REG 0x07
660566170fSBjoern A. Zeeb #define WB_LDN_REG_LDN8 0x08 /* GPIO 2, Watchdog */
670566170fSBjoern A. Zeeb
680566170fSBjoern A. Zeeb /*
690566170fSBjoern A. Zeeb * LDN8 (GPIO 2, Watchdog) specific registers and options.
700566170fSBjoern A. Zeeb */
710566170fSBjoern A. Zeeb /* CR30: LDN8 activation control. */
720566170fSBjoern A. Zeeb #define WB_LDN8_CR30 0x30
730566170fSBjoern A. Zeeb #define WB_LDN8_CR30_ACTIVE 0x01 /* 1: LD active */
740566170fSBjoern A. Zeeb
750566170fSBjoern A. Zeeb /* CRF5: Watchdog scale, P20. Mapped to reg_1. */
760566170fSBjoern A. Zeeb #define WB_LDN8_CRF5 0xF5
770566170fSBjoern A. Zeeb #define WB_LDN8_CRF5_SCALE 0x08 /* 0: 1s, 1: 60s */
780566170fSBjoern A. Zeeb #define WB_LDN8_CRF5_KEYB_P20 0x04 /* 1: keyb P20 forces timeout */
79cf864f03SRobert Noland #define WB_LDN8_CRF5_KBRST 0x02 /* 1: timeout causes pin60 kbd reset */
800566170fSBjoern A. Zeeb
810566170fSBjoern A. Zeeb /* CRF6: Watchdog Timeout (0 == off). Mapped to reg_timeout. */
820566170fSBjoern A. Zeeb #define WB_LDN8_CRF6 0xF6
830566170fSBjoern A. Zeeb
840566170fSBjoern A. Zeeb /* CRF7: Watchdog mouse, keyb, force, .. Mapped to reg_2. */
850566170fSBjoern A. Zeeb #define WB_LDN8_CRF7 0xF7
860566170fSBjoern A. Zeeb #define WB_LDN8_CRF7_MOUSE 0x80 /* 1: mouse irq resets wd timer */
870566170fSBjoern A. Zeeb #define WB_LDN8_CRF7_KEYB 0x40 /* 1: keyb irq resets wd timer */
880566170fSBjoern A. Zeeb #define WB_LDN8_CRF7_FORCE 0x20 /* 1: force timeout (self-clear) */
890566170fSBjoern A. Zeeb #define WB_LDN8_CRF7_TS 0x10 /* 0: counting, 1: fired */
900566170fSBjoern A. Zeeb #define WB_LDN8_CRF7_IRQS 0x0f /* irq source for watchdog, 2 == SMI */
91baa7dd65SAlexander Motin
92baa7dd65SAlexander Motin enum chips { w83627hf, w83627s, w83697hf, w83697ug, w83637hf, w83627thf,
93baa7dd65SAlexander Motin w83687thf, w83627ehf, w83627dhg, w83627uhg, w83667hg,
94baa7dd65SAlexander Motin w83627dhg_p, w83667hg_b, nct6775, nct6776, nct6779, nct6791,
95f531e075SAlexander Motin nct6792, nct6793, nct6795, nct6102 };
960566170fSBjoern A. Zeeb
970566170fSBjoern A. Zeeb struct wb_softc {
980566170fSBjoern A. Zeeb device_t dev;
990566170fSBjoern A. Zeeb eventhandler_tag ev_tag;
100baa7dd65SAlexander Motin enum chips chip;
101baa7dd65SAlexander Motin uint8_t ctl_reg;
102baa7dd65SAlexander Motin uint8_t time_reg;
103baa7dd65SAlexander Motin uint8_t csr_reg;
1040566170fSBjoern A. Zeeb int debug_verbose;
1050566170fSBjoern A. Zeeb
1060566170fSBjoern A. Zeeb /*
1070566170fSBjoern A. Zeeb * Special feature to let the watchdog fire at a different
1080566170fSBjoern A. Zeeb * timeout as set by watchdog(4) but still use that API to
1090566170fSBjoern A. Zeeb * re-load it periodically.
1100566170fSBjoern A. Zeeb */
1110566170fSBjoern A. Zeeb unsigned int timeout_override;
1120566170fSBjoern A. Zeeb
1130566170fSBjoern A. Zeeb /*
1140566170fSBjoern A. Zeeb * Space to save current state temporary and for sysctls.
1150566170fSBjoern A. Zeeb * We want to know the timeout value and usually need two
1160566170fSBjoern A. Zeeb * additional registers for options. Do not name them by
1170566170fSBjoern A. Zeeb * register as these might be different by chip.
1180566170fSBjoern A. Zeeb */
1190566170fSBjoern A. Zeeb uint8_t reg_timeout;
1200566170fSBjoern A. Zeeb uint8_t reg_1;
1210566170fSBjoern A. Zeeb uint8_t reg_2;
1220566170fSBjoern A. Zeeb };
1230566170fSBjoern A. Zeeb
1240566170fSBjoern A. Zeeb struct winbond_vendor_device_id {
1250566170fSBjoern A. Zeeb uint8_t device_id;
126baa7dd65SAlexander Motin enum chips chip;
1270566170fSBjoern A. Zeeb const char * descr;
1280566170fSBjoern A. Zeeb } wb_devs[] = {
1290566170fSBjoern A. Zeeb {
1300566170fSBjoern A. Zeeb .device_id = 0x52,
131baa7dd65SAlexander Motin .chip = w83627hf,
132baa7dd65SAlexander Motin .descr = "Winbond 83627HF/F/HG/G",
1330566170fSBjoern A. Zeeb },
1340566170fSBjoern A. Zeeb {
135baa7dd65SAlexander Motin .device_id = 0x59,
136baa7dd65SAlexander Motin .chip = w83627s,
137baa7dd65SAlexander Motin .descr = "Winbond 83627S",
1380566170fSBjoern A. Zeeb },
1390566170fSBjoern A. Zeeb {
140baa7dd65SAlexander Motin .device_id = 0x60,
141baa7dd65SAlexander Motin .chip = w83697hf,
142baa7dd65SAlexander Motin .descr = "Winbond 83697HF",
1430566170fSBjoern A. Zeeb },
1440566170fSBjoern A. Zeeb {
145baa7dd65SAlexander Motin .device_id = 0x68,
146baa7dd65SAlexander Motin .chip = w83697ug,
147baa7dd65SAlexander Motin .descr = "Winbond 83697UG",
148baa7dd65SAlexander Motin },
149baa7dd65SAlexander Motin {
150baa7dd65SAlexander Motin .device_id = 0x70,
151baa7dd65SAlexander Motin .chip = w83637hf,
152baa7dd65SAlexander Motin .descr = "Winbond 83637HF",
153baa7dd65SAlexander Motin },
154baa7dd65SAlexander Motin {
155baa7dd65SAlexander Motin .device_id = 0x82,
156baa7dd65SAlexander Motin .chip = w83627thf,
157baa7dd65SAlexander Motin .descr = "Winbond 83627THF",
158baa7dd65SAlexander Motin },
159baa7dd65SAlexander Motin {
160baa7dd65SAlexander Motin .device_id = 0x85,
161baa7dd65SAlexander Motin .chip = w83687thf,
162baa7dd65SAlexander Motin .descr = "Winbond 83687THF",
163baa7dd65SAlexander Motin },
164baa7dd65SAlexander Motin {
165baa7dd65SAlexander Motin .device_id = 0x88,
166baa7dd65SAlexander Motin .chip = w83627ehf,
167baa7dd65SAlexander Motin .descr = "Winbond 83627EHF",
168baa7dd65SAlexander Motin },
169baa7dd65SAlexander Motin {
1700566170fSBjoern A. Zeeb .device_id = 0xa0,
171baa7dd65SAlexander Motin .chip = w83627dhg,
172baa7dd65SAlexander Motin .descr = "Winbond 83627DHG",
1730566170fSBjoern A. Zeeb },
174cf864f03SRobert Noland {
175baa7dd65SAlexander Motin .device_id = 0xa2,
176baa7dd65SAlexander Motin .chip = w83627uhg,
177baa7dd65SAlexander Motin .descr = "Winbond 83627UHG",
178baa7dd65SAlexander Motin },
179baa7dd65SAlexander Motin {
180baa7dd65SAlexander Motin .device_id = 0xa5,
181baa7dd65SAlexander Motin .chip = w83667hg,
182baa7dd65SAlexander Motin .descr = "Winbond 83667HG",
183baa7dd65SAlexander Motin },
184baa7dd65SAlexander Motin {
185cf864f03SRobert Noland .device_id = 0xb0,
186baa7dd65SAlexander Motin .chip = w83627dhg_p,
187cf864f03SRobert Noland .descr = "Winbond 83627DHG-P",
188cf864f03SRobert Noland },
1899e8bad81SXin LI {
190baa7dd65SAlexander Motin .device_id = 0xb3,
191baa7dd65SAlexander Motin .chip = w83667hg_b,
192baa7dd65SAlexander Motin .descr = "Winbond 83667HG-B",
193baa7dd65SAlexander Motin },
194baa7dd65SAlexander Motin {
195baa7dd65SAlexander Motin .device_id = 0xb4,
196baa7dd65SAlexander Motin .chip = nct6775,
197baa7dd65SAlexander Motin .descr = "Nuvoton NCT6775",
198baa7dd65SAlexander Motin },
199baa7dd65SAlexander Motin {
2009e8bad81SXin LI .device_id = 0xc3,
201baa7dd65SAlexander Motin .chip = nct6776,
202baa7dd65SAlexander Motin .descr = "Nuvoton NCT6776",
203baa7dd65SAlexander Motin },
204baa7dd65SAlexander Motin {
205baa7dd65SAlexander Motin .device_id = 0xc4,
206baa7dd65SAlexander Motin .chip = nct6102,
207baa7dd65SAlexander Motin .descr = "Nuvoton NCT6102",
208baa7dd65SAlexander Motin },
209baa7dd65SAlexander Motin {
210baa7dd65SAlexander Motin .device_id = 0xc5,
211baa7dd65SAlexander Motin .chip = nct6779,
212baa7dd65SAlexander Motin .descr = "Nuvoton NCT6779",
213baa7dd65SAlexander Motin },
214baa7dd65SAlexander Motin {
215baa7dd65SAlexander Motin .device_id = 0xc8,
216baa7dd65SAlexander Motin .chip = nct6791,
217baa7dd65SAlexander Motin .descr = "Nuvoton NCT6791",
218baa7dd65SAlexander Motin },
219baa7dd65SAlexander Motin {
220baa7dd65SAlexander Motin .device_id = 0xc9,
221baa7dd65SAlexander Motin .chip = nct6792,
222baa7dd65SAlexander Motin .descr = "Nuvoton NCT6792",
2239e8bad81SXin LI },
224f531e075SAlexander Motin {
225f531e075SAlexander Motin .device_id = 0xd1,
226f531e075SAlexander Motin .chip = nct6793,
227f531e075SAlexander Motin .descr = "Nuvoton NCT6793",
228f531e075SAlexander Motin },
229f531e075SAlexander Motin {
230f531e075SAlexander Motin .device_id = 0xd3,
231f531e075SAlexander Motin .chip = nct6795,
232f531e075SAlexander Motin .descr = "Nuvoton NCT6795",
233f531e075SAlexander Motin },
2340566170fSBjoern A. Zeeb };
2350566170fSBjoern A. Zeeb
2360566170fSBjoern A. Zeeb /*
2370566170fSBjoern A. Zeeb * Return the watchdog related registers as we last read them. This will
2380566170fSBjoern A. Zeeb * usually not give the current timeout or state on whether the watchdog
2390566170fSBjoern A. Zeeb * fired.
2400566170fSBjoern A. Zeeb */
2410566170fSBjoern A. Zeeb static int
sysctl_wb_debug(SYSCTL_HANDLER_ARGS)2420566170fSBjoern A. Zeeb sysctl_wb_debug(SYSCTL_HANDLER_ARGS)
2430566170fSBjoern A. Zeeb {
2440566170fSBjoern A. Zeeb struct wb_softc *sc;
2450566170fSBjoern A. Zeeb struct sbuf sb;
2460566170fSBjoern A. Zeeb int error;
2470566170fSBjoern A. Zeeb
2480566170fSBjoern A. Zeeb sc = arg1;
2490566170fSBjoern A. Zeeb
2500566170fSBjoern A. Zeeb sbuf_new_for_sysctl(&sb, NULL, 64, req);
2510566170fSBjoern A. Zeeb
2520566170fSBjoern A. Zeeb sbuf_printf(&sb, "LDN8 (GPIO2, Watchdog): ");
253baa7dd65SAlexander Motin sbuf_printf(&sb, "CR%02X 0x%02x ", sc->ctl_reg, sc->reg_1);
254baa7dd65SAlexander Motin sbuf_printf(&sb, "CR%02X 0x%02x ", sc->time_reg, sc->reg_timeout);
255baa7dd65SAlexander Motin sbuf_printf(&sb, "CR%02X 0x%02x", sc->csr_reg, sc->reg_2);
2560566170fSBjoern A. Zeeb
2570566170fSBjoern A. Zeeb error = sbuf_finish(&sb);
2580566170fSBjoern A. Zeeb sbuf_delete(&sb);
2590566170fSBjoern A. Zeeb return (error);
2600566170fSBjoern A. Zeeb }
2610566170fSBjoern A. Zeeb
2620566170fSBjoern A. Zeeb /*
2630566170fSBjoern A. Zeeb * Read the current values before returning them. Given this might poke
2640566170fSBjoern A. Zeeb * the registers the same time as the watchdog, this sysctl handler should
2650566170fSBjoern A. Zeeb * be marked CTLFLAG_SKIP to not show up by default.
2660566170fSBjoern A. Zeeb */
2670566170fSBjoern A. Zeeb static int
sysctl_wb_debug_current(SYSCTL_HANDLER_ARGS)2680566170fSBjoern A. Zeeb sysctl_wb_debug_current(SYSCTL_HANDLER_ARGS)
2690566170fSBjoern A. Zeeb {
2700566170fSBjoern A. Zeeb struct wb_softc *sc;
2710566170fSBjoern A. Zeeb
2720566170fSBjoern A. Zeeb sc = arg1;
2730566170fSBjoern A. Zeeb
274bc37ac7eSAndriy Gapon sc->reg_1 = superio_read(sc->dev, sc->ctl_reg);
275bc37ac7eSAndriy Gapon sc->reg_timeout = superio_read(sc->dev, sc->time_reg);
276bc37ac7eSAndriy Gapon sc->reg_2 = superio_read(sc->dev, sc->csr_reg);
2770566170fSBjoern A. Zeeb
2780566170fSBjoern A. Zeeb return (sysctl_wb_debug(oidp, arg1, arg2, req));
2790566170fSBjoern A. Zeeb }
2800566170fSBjoern A. Zeeb
2810566170fSBjoern A. Zeeb /*
2820566170fSBjoern A. Zeeb * Sysctl handlers to force a watchdog timeout or to test the NMI functionality
2830566170fSBjoern A. Zeeb * works as expetced.
2840566170fSBjoern A. Zeeb * For testing we could set a test_nmi flag in the softc that, in case of NMI, a
2850566170fSBjoern A. Zeeb * callback function from trap.c could check whether we fired and not report the
2860566170fSBjoern A. Zeeb * timeout but clear the flag for the sysctl again. This is interesting given a
2870566170fSBjoern A. Zeeb * lot of boards have jumpers to change the action on watchdog timeout or
2880566170fSBjoern A. Zeeb * disable the watchdog completely.
2890566170fSBjoern A. Zeeb * XXX-BZ notyet: currently no general infrastructure exists to do this.
2900566170fSBjoern A. Zeeb */
2910566170fSBjoern A. Zeeb static int
sysctl_wb_force_test_nmi(SYSCTL_HANDLER_ARGS)2920566170fSBjoern A. Zeeb sysctl_wb_force_test_nmi(SYSCTL_HANDLER_ARGS)
2930566170fSBjoern A. Zeeb {
2940566170fSBjoern A. Zeeb struct wb_softc *sc;
2951d85ab6bSWarner Losh int error, val;
2960566170fSBjoern A. Zeeb
2970566170fSBjoern A. Zeeb sc = arg1;
2980566170fSBjoern A. Zeeb
2990566170fSBjoern A. Zeeb #ifdef notyet
3000566170fSBjoern A. Zeeb val = sc->test_nmi;
3010566170fSBjoern A. Zeeb #else
3020566170fSBjoern A. Zeeb val = 0;
3030566170fSBjoern A. Zeeb #endif
3040566170fSBjoern A. Zeeb error = sysctl_handle_int(oidp, &val, 0, req);
3050566170fSBjoern A. Zeeb if (error || !req->newptr)
3060566170fSBjoern A. Zeeb return (error);
3070566170fSBjoern A. Zeeb
3080566170fSBjoern A. Zeeb #ifdef notyet
3091d85ab6bSWarner Losh int test = arg2;
3101d85ab6bSWarner Losh
3110566170fSBjoern A. Zeeb /* Manually clear the test for a value of 0 and do nothing else. */
3120566170fSBjoern A. Zeeb if (test && val == 0) {
3130566170fSBjoern A. Zeeb sc->test_nmi = 0;
3140566170fSBjoern A. Zeeb return (0);
3150566170fSBjoern A. Zeeb }
3160566170fSBjoern A. Zeeb
3170566170fSBjoern A. Zeeb /*
3180566170fSBjoern A. Zeeb * If we are testing the NMI functionality, set the flag before
3190566170fSBjoern A. Zeeb * forcing the timeout.
3200566170fSBjoern A. Zeeb */
3210566170fSBjoern A. Zeeb if (test)
3220566170fSBjoern A. Zeeb sc->test_nmi = 1;
3230566170fSBjoern A. Zeeb #endif
3240566170fSBjoern A. Zeeb
3250566170fSBjoern A. Zeeb /* Force watchdog to fire. */
326bc37ac7eSAndriy Gapon sc->reg_2 = superio_read(sc->dev, sc->csr_reg);
3270566170fSBjoern A. Zeeb sc->reg_2 |= WB_LDN8_CRF7_FORCE;
328bc37ac7eSAndriy Gapon superio_write(sc->dev, sc->csr_reg, sc->reg_2);
3290566170fSBjoern A. Zeeb
3300566170fSBjoern A. Zeeb return (0);
3310566170fSBjoern A. Zeeb }
3320566170fSBjoern A. Zeeb
3330566170fSBjoern A. Zeeb /*
3340566170fSBjoern A. Zeeb * Print current watchdog state.
3350566170fSBjoern A. Zeeb *
3360566170fSBjoern A. Zeeb * Note: it is the responsibility of the caller to update the registers
3370566170fSBjoern A. Zeeb * upfront.
3380566170fSBjoern A. Zeeb */
3390566170fSBjoern A. Zeeb static void
wb_print_state(struct wb_softc * sc,const char * msg)3400566170fSBjoern A. Zeeb wb_print_state(struct wb_softc *sc, const char *msg)
3410566170fSBjoern A. Zeeb {
3420566170fSBjoern A. Zeeb
3430566170fSBjoern A. Zeeb device_printf(sc->dev, "%s%sWatchdog %sabled. %s"
3440566170fSBjoern A. Zeeb "Scaling by %ds, timer at %d (%s=%ds%s). "
345bc37ac7eSAndriy Gapon "CR%02X 0x%02x CR%02X 0x%02x\n",
3460566170fSBjoern A. Zeeb (msg != NULL) ? msg : "", (msg != NULL) ? ": " : "",
3470566170fSBjoern A. Zeeb (sc->reg_timeout > 0x00) ? "en" : "dis",
3480566170fSBjoern A. Zeeb (sc->reg_2 & WB_LDN8_CRF7_TS) ? "Watchdog fired. " : "",
3490566170fSBjoern A. Zeeb (sc->reg_1 & WB_LDN8_CRF5_SCALE) ? 60 : 1,
3500566170fSBjoern A. Zeeb sc->reg_timeout,
3510566170fSBjoern A. Zeeb (sc->reg_timeout > 0x00) ? "<" : "",
3520566170fSBjoern A. Zeeb sc->reg_timeout * ((sc->reg_1 & WB_LDN8_CRF5_SCALE) ? 60 : 1),
3530566170fSBjoern A. Zeeb (sc->reg_timeout > 0x00) ? " left" : "",
354bc37ac7eSAndriy Gapon sc->ctl_reg, sc->reg_1, sc->csr_reg, sc->reg_2);
3550566170fSBjoern A. Zeeb }
3560566170fSBjoern A. Zeeb
3570566170fSBjoern A. Zeeb /*
3580566170fSBjoern A. Zeeb * (Re)load the watchdog counter depending on timeout. A timeout of 0 will
3590566170fSBjoern A. Zeeb * disable the watchdog.
3600566170fSBjoern A. Zeeb */
3610566170fSBjoern A. Zeeb static int
wb_set_watchdog(struct wb_softc * sc,unsigned int timeout)3620566170fSBjoern A. Zeeb wb_set_watchdog(struct wb_softc *sc, unsigned int timeout)
3630566170fSBjoern A. Zeeb {
3640566170fSBjoern A. Zeeb
365baa7dd65SAlexander Motin if (timeout != 0) {
3660566170fSBjoern A. Zeeb /*
3670566170fSBjoern A. Zeeb * In case an override is set, let it override. It may lead
3680566170fSBjoern A. Zeeb * to strange results as we do not check the input of the sysctl.
3690566170fSBjoern A. Zeeb */
3700566170fSBjoern A. Zeeb if (sc->timeout_override > 0)
3710566170fSBjoern A. Zeeb timeout = sc->timeout_override;
3720566170fSBjoern A. Zeeb
3730566170fSBjoern A. Zeeb /* Make sure we support the requested timeout. */
3740566170fSBjoern A. Zeeb if (timeout > 255 * 60)
3750566170fSBjoern A. Zeeb return (EINVAL);
376baa7dd65SAlexander Motin }
3770566170fSBjoern A. Zeeb
378baa7dd65SAlexander Motin if (sc->debug_verbose)
379baa7dd65SAlexander Motin wb_print_state(sc, "Before watchdog counter (re)load");
380baa7dd65SAlexander Motin
381baa7dd65SAlexander Motin if (timeout == 0) {
382baa7dd65SAlexander Motin /* Disable watchdog. */
3834f6dd82aSAlexander Motin sc->reg_timeout = 0;
384bc37ac7eSAndriy Gapon superio_write(sc->dev, sc->time_reg, sc->reg_timeout);
385baa7dd65SAlexander Motin
386baa7dd65SAlexander Motin } else {
3870566170fSBjoern A. Zeeb /* Read current scaling factor. */
388bc37ac7eSAndriy Gapon sc->reg_1 = superio_read(sc->dev, sc->ctl_reg);
3890566170fSBjoern A. Zeeb
3900566170fSBjoern A. Zeeb if (timeout > 255) {
3910566170fSBjoern A. Zeeb /* Set scaling factor to 60s. */
3920566170fSBjoern A. Zeeb sc->reg_1 |= WB_LDN8_CRF5_SCALE;
3930566170fSBjoern A. Zeeb sc->reg_timeout = (timeout / 60);
3940566170fSBjoern A. Zeeb if (timeout % 60)
3950566170fSBjoern A. Zeeb sc->reg_timeout++;
3960566170fSBjoern A. Zeeb } else {
3970566170fSBjoern A. Zeeb /* Set scaling factor to 1s. */
3980566170fSBjoern A. Zeeb sc->reg_1 &= ~WB_LDN8_CRF5_SCALE;
3990566170fSBjoern A. Zeeb sc->reg_timeout = timeout;
4000566170fSBjoern A. Zeeb }
4010566170fSBjoern A. Zeeb
4020566170fSBjoern A. Zeeb /* In case we fired before we need to clear to fire again. */
403bc37ac7eSAndriy Gapon sc->reg_2 = superio_read(sc->dev, sc->csr_reg);
4040566170fSBjoern A. Zeeb if (sc->reg_2 & WB_LDN8_CRF7_TS) {
4050566170fSBjoern A. Zeeb sc->reg_2 &= ~WB_LDN8_CRF7_TS;
406bc37ac7eSAndriy Gapon superio_write(sc->dev, sc->csr_reg, sc->reg_2);
4070566170fSBjoern A. Zeeb }
4080566170fSBjoern A. Zeeb
4090566170fSBjoern A. Zeeb /* Write back scaling factor. */
410bc37ac7eSAndriy Gapon superio_write(sc->dev, sc->ctl_reg, sc->reg_1);
4110566170fSBjoern A. Zeeb
4120566170fSBjoern A. Zeeb /* Set timer and arm/reset the watchdog. */
413bc37ac7eSAndriy Gapon superio_write(sc->dev, sc->time_reg, sc->reg_timeout);
4140566170fSBjoern A. Zeeb }
4150566170fSBjoern A. Zeeb
4160566170fSBjoern A. Zeeb if (sc->debug_verbose)
4170566170fSBjoern A. Zeeb wb_print_state(sc, "After watchdog counter (re)load");
4180566170fSBjoern A. Zeeb return (0);
4190566170fSBjoern A. Zeeb }
4200566170fSBjoern A. Zeeb
4210566170fSBjoern A. Zeeb /*
4220566170fSBjoern A. Zeeb * watchdog(9) EVENTHANDLER function implementation to (re)load the counter
4230566170fSBjoern A. Zeeb * with the given timeout or disable the watchdog.
4240566170fSBjoern A. Zeeb */
4250566170fSBjoern A. Zeeb static void
wb_watchdog_fn(void * private,u_int cmd,int * error)4260566170fSBjoern A. Zeeb wb_watchdog_fn(void *private, u_int cmd, int *error)
4270566170fSBjoern A. Zeeb {
4280566170fSBjoern A. Zeeb struct wb_softc *sc;
4290566170fSBjoern A. Zeeb unsigned int timeout;
4300566170fSBjoern A. Zeeb int e;
4310566170fSBjoern A. Zeeb
4320566170fSBjoern A. Zeeb sc = private;
4330566170fSBjoern A. Zeeb KASSERT(sc != NULL, ("%s: watchdog handler function called without "
4340566170fSBjoern A. Zeeb "softc.", __func__));
4350566170fSBjoern A. Zeeb
4360566170fSBjoern A. Zeeb cmd &= WD_INTERVAL;
4370566170fSBjoern A. Zeeb if (cmd > 0 && cmd <= 63) {
4380566170fSBjoern A. Zeeb /* Reset (and arm) watchdog. */
4390566170fSBjoern A. Zeeb timeout = ((uint64_t)1 << cmd) / 1000000000;
4400566170fSBjoern A. Zeeb if (timeout == 0)
4410566170fSBjoern A. Zeeb timeout = 1;
4420566170fSBjoern A. Zeeb e = wb_set_watchdog(sc, timeout);
4430566170fSBjoern A. Zeeb if (e == 0) {
4440566170fSBjoern A. Zeeb if (error != NULL)
4450566170fSBjoern A. Zeeb *error = 0;
4460566170fSBjoern A. Zeeb } else {
4470566170fSBjoern A. Zeeb /* On error, try to make sure the WD is disabled. */
4480566170fSBjoern A. Zeeb wb_set_watchdog(sc, 0);
4490566170fSBjoern A. Zeeb }
4500566170fSBjoern A. Zeeb
4510566170fSBjoern A. Zeeb } else {
4520566170fSBjoern A. Zeeb /* Disable watchdog. */
4530566170fSBjoern A. Zeeb e = wb_set_watchdog(sc, 0);
4540566170fSBjoern A. Zeeb if (e != 0 && cmd == 0 && error != NULL) {
4550566170fSBjoern A. Zeeb /* Failed to disable watchdog. */
4560566170fSBjoern A. Zeeb *error = EOPNOTSUPP;
4570566170fSBjoern A. Zeeb }
4580566170fSBjoern A. Zeeb }
4590566170fSBjoern A. Zeeb }
4600566170fSBjoern A. Zeeb
4610566170fSBjoern A. Zeeb static int
wb_probe(device_t dev)4620566170fSBjoern A. Zeeb wb_probe(device_t dev)
4630566170fSBjoern A. Zeeb {
464bc37ac7eSAndriy Gapon char buf[128];
465bc37ac7eSAndriy Gapon struct wb_softc *sc;
466fc0b9815SAndriy Gapon int j;
467bc37ac7eSAndriy Gapon uint8_t devid;
468bc37ac7eSAndriy Gapon uint8_t revid;
4690566170fSBjoern A. Zeeb
470bc37ac7eSAndriy Gapon if (superio_vendor(dev) != SUPERIO_VENDOR_NUVOTON)
471bc37ac7eSAndriy Gapon return (ENXIO);
472bc37ac7eSAndriy Gapon if (superio_get_type(dev) != SUPERIO_DEV_WDT)
4730566170fSBjoern A. Zeeb return (ENXIO);
4740566170fSBjoern A. Zeeb
475bc37ac7eSAndriy Gapon sc = device_get_softc(dev);
476bc37ac7eSAndriy Gapon devid = superio_devid(dev) >> 8;
477bc37ac7eSAndriy Gapon revid = superio_revid(dev);
478bc37ac7eSAndriy Gapon for (j = 0; j < nitems(wb_devs); j++) {
479bc37ac7eSAndriy Gapon if (wb_devs[j].device_id == devid) {
480bc37ac7eSAndriy Gapon sc->chip = wb_devs[j].chip;
481bc37ac7eSAndriy Gapon snprintf(buf, sizeof(buf),
482bc37ac7eSAndriy Gapon "%s (0x%02x/0x%02x) Watchdog Timer",
483bc37ac7eSAndriy Gapon wb_devs[j].descr, devid, revid);
484bc37ac7eSAndriy Gapon device_set_desc_copy(dev, buf);
485bc37ac7eSAndriy Gapon return (BUS_PROBE_SPECIFIC);
486bc37ac7eSAndriy Gapon }
487bc37ac7eSAndriy Gapon }
488fc0b9815SAndriy Gapon if (bootverbose) {
489fc0b9815SAndriy Gapon device_printf(dev,
490fc0b9815SAndriy Gapon "unrecognized chip: devid 0x%02x, revid 0x%02x\n",
491fc0b9815SAndriy Gapon devid, revid);
492fc0b9815SAndriy Gapon }
493bc37ac7eSAndriy Gapon return (ENXIO);
4940566170fSBjoern A. Zeeb }
4950566170fSBjoern A. Zeeb
4960566170fSBjoern A. Zeeb static int
wb_attach(device_t dev)4970566170fSBjoern A. Zeeb wb_attach(device_t dev)
4980566170fSBjoern A. Zeeb {
4990566170fSBjoern A. Zeeb struct wb_softc *sc;
5000566170fSBjoern A. Zeeb struct sysctl_ctx_list *sctx;
5010566170fSBjoern A. Zeeb struct sysctl_oid *soid;
5020566170fSBjoern A. Zeeb unsigned long timeout;
503baa7dd65SAlexander Motin uint8_t t;
5040566170fSBjoern A. Zeeb
5050566170fSBjoern A. Zeeb sc = device_get_softc(dev);
506bc37ac7eSAndriy Gapon sc->dev = dev;
5070566170fSBjoern A. Zeeb
508fc0b9815SAndriy Gapon /* Make sure WDT is enabled. */
509fc0b9815SAndriy Gapon superio_dev_enable(dev, WB_LDN8_CR30_ACTIVE);
510fc0b9815SAndriy Gapon
511fc0b9815SAndriy Gapon switch (sc->chip) {
512fc0b9815SAndriy Gapon case w83697hf:
513fc0b9815SAndriy Gapon case w83697ug:
514bc37ac7eSAndriy Gapon sc->ctl_reg = 0xf3;
515bc37ac7eSAndriy Gapon sc->time_reg = 0xf4;
516fc0b9815SAndriy Gapon sc->csr_reg = 0xf7;
517fc0b9815SAndriy Gapon break;
518fc0b9815SAndriy Gapon case nct6102:
519bc37ac7eSAndriy Gapon sc->ctl_reg = 0xf0;
520bc37ac7eSAndriy Gapon sc->time_reg = 0xf1;
521bc37ac7eSAndriy Gapon sc->csr_reg = 0xf2;
522fc0b9815SAndriy Gapon break;
523fc0b9815SAndriy Gapon default:
524fc0b9815SAndriy Gapon sc->ctl_reg = 0xf5;
525fc0b9815SAndriy Gapon sc->time_reg = 0xf6;
526fc0b9815SAndriy Gapon sc->csr_reg = 0xf7;
527fc0b9815SAndriy Gapon break;
528bc37ac7eSAndriy Gapon }
5290566170fSBjoern A. Zeeb
530baa7dd65SAlexander Motin switch (sc->chip) {
531baa7dd65SAlexander Motin case w83627hf:
532baa7dd65SAlexander Motin case w83627s:
533bc37ac7eSAndriy Gapon t = superio_read(dev, 0x2B) & ~0x10;
534bc37ac7eSAndriy Gapon superio_write(dev, 0x2B, t); /* set GPIO24 to WDT0 */
535baa7dd65SAlexander Motin break;
536baa7dd65SAlexander Motin case w83697hf:
537baa7dd65SAlexander Motin /* Set pin 119 to WDTO# mode (= CR29, WDT0) */
538bc37ac7eSAndriy Gapon t = superio_read(dev, 0x29) & ~0x60;
539baa7dd65SAlexander Motin t |= 0x20;
540bc37ac7eSAndriy Gapon superio_write(dev, 0x29, t);
541baa7dd65SAlexander Motin break;
542baa7dd65SAlexander Motin case w83697ug:
543baa7dd65SAlexander Motin /* Set pin 118 to WDTO# mode */
544bc37ac7eSAndriy Gapon t = superio_read(dev, 0x2b) & ~0x04;
545bc37ac7eSAndriy Gapon superio_write(dev, 0x2b, t);
546baa7dd65SAlexander Motin break;
547baa7dd65SAlexander Motin case w83627thf:
548bc37ac7eSAndriy Gapon t = (superio_read(dev, 0x2B) & ~0x08) | 0x04;
549bc37ac7eSAndriy Gapon superio_write(dev, 0x2B, t); /* set GPIO3 to WDT0 */
550baa7dd65SAlexander Motin break;
551baa7dd65SAlexander Motin case w83627dhg:
552baa7dd65SAlexander Motin case w83627dhg_p:
553bc37ac7eSAndriy Gapon t = superio_read(dev, 0x2D) & ~0x01; /* PIN77 -> WDT0# */
554bc37ac7eSAndriy Gapon superio_write(dev, 0x2D, t); /* set GPIO5 to WDT0 */
555bc37ac7eSAndriy Gapon t = superio_read(dev, sc->ctl_reg);
556baa7dd65SAlexander Motin t |= 0x02; /* enable the WDTO# output low pulse
557baa7dd65SAlexander Motin * to the KBRST# pin */
558bc37ac7eSAndriy Gapon superio_write(dev, sc->ctl_reg, t);
559baa7dd65SAlexander Motin break;
560baa7dd65SAlexander Motin case w83637hf:
561baa7dd65SAlexander Motin break;
562baa7dd65SAlexander Motin case w83687thf:
563bc37ac7eSAndriy Gapon t = superio_read(dev, 0x2C) & ~0x80; /* PIN47 -> WDT0# */
564bc37ac7eSAndriy Gapon superio_write(dev, 0x2C, t);
565baa7dd65SAlexander Motin break;
566baa7dd65SAlexander Motin case w83627ehf:
567baa7dd65SAlexander Motin case w83627uhg:
568baa7dd65SAlexander Motin case w83667hg:
569baa7dd65SAlexander Motin case w83667hg_b:
570baa7dd65SAlexander Motin case nct6775:
571baa7dd65SAlexander Motin case nct6776:
572baa7dd65SAlexander Motin case nct6779:
573baa7dd65SAlexander Motin case nct6791:
574baa7dd65SAlexander Motin case nct6792:
575f531e075SAlexander Motin case nct6793:
576f531e075SAlexander Motin case nct6795:
577baa7dd65SAlexander Motin case nct6102:
578baa7dd65SAlexander Motin /*
579baa7dd65SAlexander Motin * These chips have a fixed WDTO# output pin (W83627UHG),
580baa7dd65SAlexander Motin * or support more than one WDTO# output pin.
581baa7dd65SAlexander Motin * Don't touch its configuration, and hope the BIOS
582baa7dd65SAlexander Motin * does the right thing.
583baa7dd65SAlexander Motin */
584bc37ac7eSAndriy Gapon t = superio_read(dev, sc->ctl_reg);
585baa7dd65SAlexander Motin t |= 0x02; /* enable the WDTO# output low pulse
586baa7dd65SAlexander Motin * to the KBRST# pin */
587bc37ac7eSAndriy Gapon superio_write(dev, sc->ctl_reg, t);
588baa7dd65SAlexander Motin break;
589baa7dd65SAlexander Motin default:
590baa7dd65SAlexander Motin break;
591baa7dd65SAlexander Motin }
5920566170fSBjoern A. Zeeb
5930566170fSBjoern A. Zeeb /* Read the current watchdog configuration. */
594bc37ac7eSAndriy Gapon sc->reg_1 = superio_read(dev, sc->ctl_reg);
595bc37ac7eSAndriy Gapon sc->reg_timeout = superio_read(dev, sc->time_reg);
596bc37ac7eSAndriy Gapon sc->reg_2 = superio_read(dev, sc->csr_reg);
5970566170fSBjoern A. Zeeb
5980566170fSBjoern A. Zeeb /* Print current state if bootverbose or watchdog already enabled. */
5990566170fSBjoern A. Zeeb if (bootverbose || (sc->reg_timeout > 0x00))
6000566170fSBjoern A. Zeeb wb_print_state(sc, "Before watchdog attach");
6010566170fSBjoern A. Zeeb
602baa7dd65SAlexander Motin sc->reg_1 &= ~WB_LDN8_CRF5_KEYB_P20;
603cf864f03SRobert Noland sc->reg_1 |= WB_LDN8_CRF5_KBRST;
604bc37ac7eSAndriy Gapon superio_write(dev, sc->ctl_reg, sc->reg_1);
6050566170fSBjoern A. Zeeb
606baa7dd65SAlexander Motin /*
607baa7dd65SAlexander Motin * Clear a previous watchdog timeout event (if still set).
608baa7dd65SAlexander Motin * Disable timer reset on mouse interrupts. Leave reset on keyboard,
609baa7dd65SAlexander Motin * since one of my boards is getting stuck in reboot without it.
610baa7dd65SAlexander Motin */
611baa7dd65SAlexander Motin sc->reg_2 &= ~(WB_LDN8_CRF7_MOUSE|WB_LDN8_CRF7_TS);
612bc37ac7eSAndriy Gapon superio_write(dev, sc->csr_reg, sc->reg_2);
6130566170fSBjoern A. Zeeb
6140566170fSBjoern A. Zeeb /* Read global timeout override tunable, Add per device sysctls. */
6150566170fSBjoern A. Zeeb if (TUNABLE_ULONG_FETCH("hw.wbwd.timeout_override", &timeout)) {
6160566170fSBjoern A. Zeeb if (timeout > 0)
6170566170fSBjoern A. Zeeb sc->timeout_override = timeout;
6180566170fSBjoern A. Zeeb }
6190566170fSBjoern A. Zeeb sctx = device_get_sysctl_ctx(dev);
6200566170fSBjoern A. Zeeb soid = device_get_sysctl_tree(dev);
6210566170fSBjoern A. Zeeb SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO,
6220566170fSBjoern A. Zeeb "timeout_override", CTLFLAG_RW, &sc->timeout_override, 0,
6230566170fSBjoern A. Zeeb "Timeout in seconds overriding default watchdog timeout");
6240566170fSBjoern A. Zeeb SYSCTL_ADD_INT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO,
6250566170fSBjoern A. Zeeb "debug_verbose", CTLFLAG_RW, &sc->debug_verbose, 0,
6260566170fSBjoern A. Zeeb "Enables extra debugging information");
6270566170fSBjoern A. Zeeb SYSCTL_ADD_PROC(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "debug",
628fdec27edSAlexander Motin CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0,
6297029da5cSPawel Biernacki sysctl_wb_debug, "A",
6300566170fSBjoern A. Zeeb "Selected register information from last change by driver");
6310566170fSBjoern A. Zeeb SYSCTL_ADD_PROC(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "debug_current",
632fdec27edSAlexander Motin CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_SKIP | CTLFLAG_MPSAFE,
6337029da5cSPawel Biernacki sc, 0, sysctl_wb_debug_current, "A",
6340566170fSBjoern A. Zeeb "Selected register information (may interfere)");
6350566170fSBjoern A. Zeeb SYSCTL_ADD_PROC(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "force_timeout",
636fdec27edSAlexander Motin CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_SKIP | CTLFLAG_MPSAFE, sc, 0,
6370566170fSBjoern A. Zeeb sysctl_wb_force_test_nmi, "I", "Enable to force watchdog to fire.");
6380566170fSBjoern A. Zeeb
6390566170fSBjoern A. Zeeb /* Register watchdog. */
6400566170fSBjoern A. Zeeb sc->ev_tag = EVENTHANDLER_REGISTER(watchdog_list, wb_watchdog_fn, sc,
6410566170fSBjoern A. Zeeb 0);
6420566170fSBjoern A. Zeeb
6430566170fSBjoern A. Zeeb if (bootverbose)
6440566170fSBjoern A. Zeeb wb_print_state(sc, "After watchdog attach");
6450566170fSBjoern A. Zeeb
6460566170fSBjoern A. Zeeb return (0);
6470566170fSBjoern A. Zeeb }
6480566170fSBjoern A. Zeeb
6490566170fSBjoern A. Zeeb static int
wb_detach(device_t dev)6500566170fSBjoern A. Zeeb wb_detach(device_t dev)
6510566170fSBjoern A. Zeeb {
6520566170fSBjoern A. Zeeb struct wb_softc *sc;
6530566170fSBjoern A. Zeeb
6540566170fSBjoern A. Zeeb sc = device_get_softc(dev);
6550566170fSBjoern A. Zeeb
6560566170fSBjoern A. Zeeb /* Unregister and stop the watchdog if running. */
6570566170fSBjoern A. Zeeb if (sc->ev_tag)
6580566170fSBjoern A. Zeeb EVENTHANDLER_DEREGISTER(watchdog_list, sc->ev_tag);
6590566170fSBjoern A. Zeeb wb_set_watchdog(sc, 0);
6600566170fSBjoern A. Zeeb
6610566170fSBjoern A. Zeeb /* Bus subroutines take care of sysctls already. */
6620566170fSBjoern A. Zeeb
6630566170fSBjoern A. Zeeb return (0);
6640566170fSBjoern A. Zeeb }
6650566170fSBjoern A. Zeeb
6660566170fSBjoern A. Zeeb static device_method_t wb_methods[] = {
6670566170fSBjoern A. Zeeb /* Device interface */
6680566170fSBjoern A. Zeeb DEVMETHOD(device_probe, wb_probe),
6690566170fSBjoern A. Zeeb DEVMETHOD(device_attach, wb_attach),
6700566170fSBjoern A. Zeeb DEVMETHOD(device_detach, wb_detach),
6710566170fSBjoern A. Zeeb
672e25fe6cdSXin LI DEVMETHOD_END
6730566170fSBjoern A. Zeeb };
6740566170fSBjoern A. Zeeb
675bc37ac7eSAndriy Gapon static driver_t wb_driver = {
6760566170fSBjoern A. Zeeb "wbwd",
6770566170fSBjoern A. Zeeb wb_methods,
6780566170fSBjoern A. Zeeb sizeof(struct wb_softc)
6790566170fSBjoern A. Zeeb };
6800566170fSBjoern A. Zeeb
68186dc8398SJohn Baldwin DRIVER_MODULE(wb, superio, wb_driver, NULL, NULL);
682bc37ac7eSAndriy Gapon MODULE_DEPEND(wb, superio, 1, 1, 1);
683bc37ac7eSAndriy Gapon MODULE_VERSION(wb, 1);
684