1/*- 2 * Copyright (c) 2000 KIYOHARA Takashi <kiyohara@kk.iij4u.ne.jp> 3 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/bus.h> 33#include <sys/eventhandler.h> 34#include <sys/kernel.h> 35#include <sys/module.h> 36#include <sys/reboot.h> 37 38#include <machine/bus.h> 39#include <machine/resource.h> 40#include <sys/rman.h> 41 42#include <pc98/pc98/canbusvars.h> 43#include "canbus_if.h" 44 45 46/* canbepm softc */ 47struct canbepm_softc { 48 device_t canbepm_dev; /* canbepm device */ 49 50 eventhandler_tag canbepm_tag; /* event handler tag */ 51}; 52 53 54static void canbepm_soft_off (void *, int); 55static void canbepm_identify (driver_t *, device_t); 56static int canbepm_probe (device_t); 57static int canbepm_attach (device_t); 58static int canbepm_detach (device_t); 59 60 61static device_method_t canbepm_methods[] = { 62 DEVMETHOD(device_identify, canbepm_identify), 63 DEVMETHOD(device_probe, canbepm_probe), 64 DEVMETHOD(device_attach, canbepm_attach), 65 DEVMETHOD(device_detach, canbepm_detach), 66 {0, 0} 67}; 68 69static driver_t canbepm_driver = { 70 "canbepm", 71 canbepm_methods, 72 sizeof(struct canbepm_softc), 73}; 74 75devclass_t canbepm_devclass; 76DRIVER_MODULE(canbepm, canbus, canbepm_driver, canbepm_devclass, 0, 0); 77MODULE_DEPEND(canbepm, canbus, 1, 1, 1); 78 79 80static void 81canbepm_soft_off (void *data, int howto) 82{ 83 struct canbepm_softc *sc = data; 84 u_int8_t poweroff_data[] = CANBE_POWEROFF_DATA; 85 86 if (!(howto & RB_POWEROFF)) 87 return; 88 89 CANBUS_WRITE_MULTI(device_get_parent(sc->canbepm_dev), sc->canbepm_dev, 90 CANBE_POWER_CTRL, sizeof (poweroff_data), poweroff_data); 91} 92 93 94static void 95canbepm_identify(driver_t *drv, device_t parent) 96{ 97 if (device_find_child(parent, "canbepm", 0) == NULL) { 98 if (BUS_ADD_CHILD(parent, 33, "canbepm", 0) == NULL) 99 device_printf(parent, "canbepm cannot attach\n"); 100 } 101} 102 103 104static int 105canbepm_probe(device_t dev) 106{ 107 device_set_desc(dev, "CanBe Power Management Controller"); 108 109 return (0); 110} 111 112static int 113canbepm_attach(device_t dev) 114{ 115 struct canbepm_softc *sc = device_get_softc(dev); 116 117 /* eventhandler regist */ 118 sc->canbepm_tag = EVENTHANDLER_REGISTER( 119 shutdown_final, canbepm_soft_off, sc, SHUTDOWN_PRI_LAST); 120 121 sc->canbepm_dev = dev; 122 123 return (0); 124} 125 126 127static int 128canbepm_detach(device_t dev) 129{ 130 struct canbepm_softc *sc = device_get_softc(dev); 131 132 /* eventhandler deregist */ 133 EVENTHANDLER_DEREGISTER(shutdown_final, sc->canbepm_tag); 134 BUS_CHILD_DETACHED(device_get_parent(dev), dev); 135 136 return (0); 137} 138