swsensor.c revision 1.3.2.2
1 1.3.2.2 uebayasi /* $NetBSD: swsensor.c,v 1.3.2.2 2010/10/22 07:22:17 uebayasi Exp $ */ 2 1.3.2.2 uebayasi /* 3 1.3.2.2 uebayasi * Copyright (c) 2008 The NetBSD Foundation, Inc. 4 1.3.2.2 uebayasi * All rights reserved. 5 1.3.2.2 uebayasi * 6 1.3.2.2 uebayasi * Redistribution and use in source and binary forms, with or without 7 1.3.2.2 uebayasi * modification, are permitted provided that the following conditions 8 1.3.2.2 uebayasi * are met: 9 1.3.2.2 uebayasi * 1. Redistributions of source code must retain the above copyright 10 1.3.2.2 uebayasi * notice, this list of conditions and the following disclaimer. 11 1.3.2.2 uebayasi * 2. Redistributions in binary form must reproduce the above copyright 12 1.3.2.2 uebayasi * notice, this list of conditions and the following disclaimer in the 13 1.3.2.2 uebayasi * documentation and/or other materials provided with the distribution. 14 1.3.2.2 uebayasi * 15 1.3.2.2 uebayasi * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 16 1.3.2.2 uebayasi * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 17 1.3.2.2 uebayasi * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 1.3.2.2 uebayasi * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 1.3.2.2 uebayasi * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY 20 1.3.2.2 uebayasi * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 1.3.2.2 uebayasi * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 22 1.3.2.2 uebayasi * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.3.2.2 uebayasi * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 24 1.3.2.2 uebayasi * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 25 1.3.2.2 uebayasi * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 26 1.3.2.2 uebayasi * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 1.3.2.2 uebayasi */ 28 1.3.2.2 uebayasi 29 1.3.2.2 uebayasi #include <sys/cdefs.h> 30 1.3.2.2 uebayasi __KERNEL_RCSID(0, "$NetBSD: swsensor.c,v 1.3.2.2 2010/10/22 07:22:17 uebayasi Exp $"); 31 1.3.2.2 uebayasi 32 1.3.2.2 uebayasi #include <sys/param.h> 33 1.3.2.2 uebayasi #include <sys/kernel.h> 34 1.3.2.2 uebayasi #include <sys/module.h> 35 1.3.2.2 uebayasi #include <sys/sysctl.h> 36 1.3.2.2 uebayasi 37 1.3.2.2 uebayasi #include <dev/sysmon/sysmonvar.h> 38 1.3.2.2 uebayasi 39 1.3.2.2 uebayasi #include <prop/proplib.h> 40 1.3.2.2 uebayasi 41 1.3.2.2 uebayasi int swsensorattach(int); 42 1.3.2.2 uebayasi 43 1.3.2.2 uebayasi static struct sysctllog *swsensor_sysctllog = NULL; 44 1.3.2.2 uebayasi 45 1.3.2.2 uebayasi static int sensor_value_sysctl = 0; 46 1.3.2.2 uebayasi 47 1.3.2.2 uebayasi static struct sysmon_envsys *swsensor_sme; 48 1.3.2.2 uebayasi static envsys_data_t swsensor_edata; 49 1.3.2.2 uebayasi 50 1.3.2.2 uebayasi static int32_t sw_sensor_value; 51 1.3.2.2 uebayasi 52 1.3.2.2 uebayasi MODULE(MODULE_CLASS_DRIVER, swsensor, NULL); 53 1.3.2.2 uebayasi 54 1.3.2.2 uebayasi /* 55 1.3.2.2 uebayasi * Set-up the sysctl interface for setting the sensor's cur_value 56 1.3.2.2 uebayasi */ 57 1.3.2.2 uebayasi 58 1.3.2.2 uebayasi static 59 1.3.2.2 uebayasi void 60 1.3.2.2 uebayasi sysctl_swsensor_setup(void) 61 1.3.2.2 uebayasi { 62 1.3.2.2 uebayasi int ret; 63 1.3.2.2 uebayasi int node_sysctl_num; 64 1.3.2.2 uebayasi const struct sysctlnode *me = NULL; 65 1.3.2.2 uebayasi 66 1.3.2.2 uebayasi KASSERT(swsensor_sysctllog == NULL); 67 1.3.2.2 uebayasi 68 1.3.2.2 uebayasi ret = sysctl_createv(&swsensor_sysctllog, 0, NULL, &me, 69 1.3.2.2 uebayasi CTLFLAG_READWRITE, 70 1.3.2.2 uebayasi CTLTYPE_NODE, "swsensor", NULL, 71 1.3.2.2 uebayasi NULL, 0, NULL, 0, 72 1.3.2.2 uebayasi CTL_HW, CTL_CREATE, CTL_EOL); 73 1.3.2.2 uebayasi if (ret != 0) 74 1.3.2.2 uebayasi return; 75 1.3.2.2 uebayasi 76 1.3.2.2 uebayasi node_sysctl_num = me->sysctl_num; 77 1.3.2.2 uebayasi ret = sysctl_createv(&swsensor_sysctllog, 0, NULL, &me, 78 1.3.2.2 uebayasi CTLFLAG_READWRITE, 79 1.3.2.2 uebayasi CTLTYPE_INT, "cur_value", NULL, 80 1.3.2.2 uebayasi NULL, 0, &sw_sensor_value, 0, 81 1.3.2.2 uebayasi CTL_HW, node_sysctl_num, CTL_CREATE, CTL_EOL); 82 1.3.2.2 uebayasi 83 1.3.2.2 uebayasi if (ret == 0) 84 1.3.2.2 uebayasi sensor_value_sysctl = me->sysctl_num; 85 1.3.2.2 uebayasi } 86 1.3.2.2 uebayasi 87 1.3.2.2 uebayasi /* 88 1.3.2.2 uebayasi * "Polling" routine to update sensor value 89 1.3.2.2 uebayasi */ 90 1.3.2.2 uebayasi static 91 1.3.2.2 uebayasi void 92 1.3.2.2 uebayasi swsensor_refresh(struct sysmon_envsys *sme, envsys_data_t *edata) 93 1.3.2.2 uebayasi { 94 1.3.2.2 uebayasi 95 1.3.2.2 uebayasi edata->value_cur = sw_sensor_value; 96 1.3.2.2 uebayasi edata->state = ENVSYS_SVALID; 97 1.3.2.2 uebayasi } 98 1.3.2.2 uebayasi 99 1.3.2.2 uebayasi /* 100 1.3.2.2 uebayasi * Module management 101 1.3.2.2 uebayasi */ 102 1.3.2.2 uebayasi 103 1.3.2.2 uebayasi static 104 1.3.2.2 uebayasi int 105 1.3.2.2 uebayasi swsensor_init(void *arg) 106 1.3.2.2 uebayasi { 107 1.3.2.2 uebayasi int error; 108 1.3.2.2 uebayasi prop_dictionary_t pd = (prop_dictionary_t)arg; 109 1.3.2.2 uebayasi prop_object_t po = NULL; 110 1.3.2.2 uebayasi int pv; 111 1.3.2.2 uebayasi 112 1.3.2.2 uebayasi swsensor_sme = sysmon_envsys_create(); 113 1.3.2.2 uebayasi if (swsensor_sme == NULL) 114 1.3.2.2 uebayasi return ENOTTY; 115 1.3.2.2 uebayasi 116 1.3.2.2 uebayasi swsensor_sme->sme_name = "swsensor"; 117 1.3.2.2 uebayasi swsensor_sme->sme_cookie = &swsensor_edata; 118 1.3.2.2 uebayasi swsensor_sme->sme_refresh = swsensor_refresh; 119 1.3.2.2 uebayasi swsensor_sme->sme_set_limits = NULL; 120 1.3.2.2 uebayasi swsensor_sme->sme_get_limits = NULL; 121 1.3.2.2 uebayasi 122 1.3.2.2 uebayasi /* See if prop dictionary supplies a sensor type */ 123 1.3.2.2 uebayasi if (pd != NULL) 124 1.3.2.2 uebayasi po = prop_dictionary_get(pd, "type"); 125 1.3.2.2 uebayasi 126 1.3.2.2 uebayasi pv = -1; 127 1.3.2.2 uebayasi if (po != NULL && prop_object_type(po) == PROP_TYPE_NUMBER) 128 1.3.2.2 uebayasi swsensor_edata.units = prop_number_integer_value(po); 129 1.3.2.2 uebayasi else 130 1.3.2.2 uebayasi swsensor_edata.units = ENVSYS_INTEGER; 131 1.3.2.2 uebayasi 132 1.3.2.2 uebayasi /* See if prop dictionary supplies sensor flags */ 133 1.3.2.2 uebayasi if (pd != NULL) 134 1.3.2.2 uebayasi po = prop_dictionary_get(pd, "flags"); 135 1.3.2.2 uebayasi 136 1.3.2.2 uebayasi pv = -1; 137 1.3.2.2 uebayasi if (po != NULL && prop_object_type(po) == PROP_TYPE_NUMBER) 138 1.3.2.2 uebayasi swsensor_edata.flags = prop_number_integer_value(po); 139 1.3.2.2 uebayasi else 140 1.3.2.2 uebayasi swsensor_edata.flags = 0; 141 1.3.2.2 uebayasi 142 1.3.2.2 uebayasi swsensor_edata.value_cur = 0; 143 1.3.2.2 uebayasi strlcpy(swsensor_edata.desc, "sensor", ENVSYS_DESCLEN); 144 1.3.2.2 uebayasi 145 1.3.2.2 uebayasi error = sysmon_envsys_sensor_attach(swsensor_sme, &swsensor_edata); 146 1.3.2.2 uebayasi 147 1.3.2.2 uebayasi if (error == 0) 148 1.3.2.2 uebayasi error = sysmon_envsys_register(swsensor_sme); 149 1.3.2.2 uebayasi else { 150 1.3.2.2 uebayasi printf("sysmon_envsys_sensor_attach failed: %d\n", error); 151 1.3.2.2 uebayasi return error; 152 1.3.2.2 uebayasi } 153 1.3.2.2 uebayasi 154 1.3.2.2 uebayasi if (error == 0) 155 1.3.2.2 uebayasi sysctl_swsensor_setup(); 156 1.3.2.2 uebayasi else 157 1.3.2.2 uebayasi printf("sysmon_envsys_register failed: %d\n", error); 158 1.3.2.2 uebayasi 159 1.3.2.2 uebayasi return error; 160 1.3.2.2 uebayasi } 161 1.3.2.2 uebayasi 162 1.3.2.2 uebayasi static 163 1.3.2.2 uebayasi int 164 1.3.2.2 uebayasi swsensor_fini(void *arg) 165 1.3.2.2 uebayasi { 166 1.3.2.2 uebayasi 167 1.3.2.2 uebayasi sysmon_envsys_unregister(swsensor_sme); 168 1.3.2.2 uebayasi 169 1.3.2.2 uebayasi sysctl_teardown(&swsensor_sysctllog); 170 1.3.2.2 uebayasi 171 1.3.2.2 uebayasi return 0; 172 1.3.2.2 uebayasi } 173 1.3.2.2 uebayasi 174 1.3.2.2 uebayasi static 175 1.3.2.2 uebayasi int 176 1.3.2.2 uebayasi swsensor_modcmd(modcmd_t cmd, void *arg) 177 1.3.2.2 uebayasi { 178 1.3.2.2 uebayasi int ret; 179 1.3.2.2 uebayasi 180 1.3.2.2 uebayasi switch (cmd) { 181 1.3.2.2 uebayasi case MODULE_CMD_INIT: 182 1.3.2.2 uebayasi ret = swsensor_init(arg); 183 1.3.2.2 uebayasi break; 184 1.3.2.2 uebayasi 185 1.3.2.2 uebayasi case MODULE_CMD_FINI: 186 1.3.2.2 uebayasi ret = swsensor_fini(arg); 187 1.3.2.2 uebayasi break; 188 1.3.2.2 uebayasi 189 1.3.2.2 uebayasi case MODULE_CMD_STAT: 190 1.3.2.2 uebayasi default: 191 1.3.2.2 uebayasi ret = ENOTTY; 192 1.3.2.2 uebayasi } 193 1.3.2.2 uebayasi 194 1.3.2.2 uebayasi return ret; 195 1.3.2.2 uebayasi } 196
Indexes created Tue Sep 30 20:09:53 GMT 2025