apple_smc_fan.c revision 1.4.10.3
1 1.4.10.2 tls /* $NetBSD: apple_smc_fan.c,v 1.4.10.3 2017/12/03 11:37:03 jdolecek Exp $ */ 2 1.4.10.2 tls 3 1.4.10.2 tls /* 4 1.4.10.2 tls * Apple System Management Controller: Fans 5 1.4.10.2 tls */ 6 1.4.10.2 tls 7 1.4.10.2 tls /*- 8 1.4.10.2 tls * Copyright (c) 2013 The NetBSD Foundation, Inc. 9 1.4.10.2 tls * All rights reserved. 10 1.4.10.2 tls * 11 1.4.10.2 tls * This code is derived from software contributed to The NetBSD Foundation 12 1.4.10.2 tls * by Taylor R. Campbell. 13 1.4.10.2 tls * 14 1.4.10.2 tls * Redistribution and use in source and binary forms, with or without 15 1.4.10.2 tls * modification, are permitted provided that the following conditions 16 1.4.10.2 tls * are met: 17 1.4.10.2 tls * 1. Redistributions of source code must retain the above copyright 18 1.4.10.2 tls * notice, this list of conditions and the following disclaimer. 19 1.4.10.2 tls * 2. Redistributions in binary form must reproduce the above copyright 20 1.4.10.2 tls * notice, this list of conditions and the following disclaimer in the 21 1.4.10.2 tls * documentation and/or other materials provided with the distribution. 22 1.4.10.2 tls * 23 1.4.10.2 tls * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 1.4.10.2 tls * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 1.4.10.2 tls * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 1.4.10.2 tls * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 1.4.10.2 tls * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 1.4.10.2 tls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 1.4.10.2 tls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 1.4.10.2 tls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 1.4.10.2 tls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 1.4.10.2 tls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 1.4.10.2 tls * POSSIBILITY OF SUCH DAMAGE. 34 1.4.10.2 tls */ 35 1.4.10.2 tls 36 1.4.10.2 tls #include <sys/cdefs.h> 37 1.4.10.2 tls __KERNEL_RCSID(0, "$NetBSD: apple_smc_fan.c,v 1.4.10.3 2017/12/03 11:37:03 jdolecek Exp $"); 38 1.4.10.2 tls 39 1.4.10.2 tls #include <sys/types.h> 40 1.4.10.2 tls #include <sys/param.h> 41 1.4.10.2 tls #include <sys/device.h> 42 1.4.10.2 tls #include <sys/kmem.h> 43 1.4.10.2 tls #include <sys/module.h> 44 1.4.10.2 tls #if 0 /* XXX sysctl */ 45 1.4.10.2 tls #include <sys/sysctl.h> 46 1.4.10.2 tls #endif 47 1.4.10.2 tls #include <sys/systm.h> 48 1.4.10.2 tls 49 1.4.10.2 tls #include <dev/ic/apple_smc.h> 50 1.4.10.2 tls 51 1.4.10.2 tls #include <dev/sysmon/sysmonvar.h> 52 1.4.10.2 tls 53 1.4.10.2 tls #define APPLE_SMC_NFANS_KEY "FNum" 54 1.4.10.2 tls 55 1.4.10.2 tls static const struct fan_sensor { 56 1.4.10.2 tls const char *fs_name; 57 1.4.10.2 tls const char *fs_key_suffix; 58 1.4.10.2 tls } fan_sensors[] = { 59 1.4.10.2 tls { "actual", "Ac" }, 60 1.4.10.2 tls { "minimum", "Mn" }, 61 1.4.10.2 tls { "maximum", "Mx" }, 62 1.4.10.2 tls { "safe", "Sf" }, 63 1.4.10.2 tls { "target", "Tg" }, 64 1.4.10.2 tls }; 65 1.4.10.2 tls 66 1.4.10.2 tls struct apple_smc_fan_softc { 67 1.4.10.2 tls device_t sc_dev; 68 1.4.10.2 tls struct apple_smc_tag *sc_smc; 69 1.4.10.2 tls struct sysmon_envsys *sc_sme; 70 1.4.10.2 tls uint8_t sc_nfans; 71 1.4.10.2 tls struct { 72 1.4.10.2 tls struct { 73 1.4.10.2 tls struct apple_smc_key *sensor_key; 74 1.4.10.2 tls struct envsys_data sensor_data; 75 1.4.10.2 tls } sensors[__arraycount(fan_sensors)]; 76 1.4.10.2 tls } *sc_fans; 77 1.4.10.2 tls 78 1.4.10.2 tls #if 0 /* XXX sysctl */ 79 1.4.10.2 tls struct sysctllog *sc_sysctl_log; 80 1.4.10.2 tls const struct sysctlnode *sc_sysctl_node; 81 1.4.10.2 tls #endif 82 1.4.10.2 tls }; 83 1.4.10.2 tls 84 1.4.10.2 tls struct fan_desc { 85 1.4.10.2 tls uint8_t fd_type; 86 1.4.10.2 tls uint8_t fd_zone; 87 1.4.10.2 tls uint8_t fd_location; 88 1.4.10.2 tls uint8_t fd_reserved0; 89 1.4.10.2 tls char fd_name[12]; 90 1.4.10.2 tls } __packed; 91 1.4.10.2 tls 92 1.4.10.2 tls static int apple_smc_fan_match(device_t, cfdata_t, void *); 93 1.4.10.2 tls static void apple_smc_fan_attach(device_t, device_t, void *); 94 1.4.10.2 tls static int apple_smc_fan_detach(device_t, int); 95 1.4.10.2 tls static int apple_smc_fan_attach_sensors(struct apple_smc_fan_softc *); 96 1.4.10.2 tls static void apple_smc_fan_attach_sensor(struct apple_smc_fan_softc *, 97 1.4.10.2 tls uint8_t, const char *, uint8_t); 98 1.4.10.2 tls static void apple_smc_fan_refresh(struct sysmon_envsys *, 99 1.4.10.2 tls struct envsys_data *); 100 1.4.10.2 tls static void apple_smc_fan_release_keys(struct apple_smc_fan_softc *); 101 1.4.10.2 tls #if 0 /* XXX sysctl */ 102 1.4.10.2 tls static int apple_smc_fan_sysctl_setup(struct apple_smc_fan_softc *); 103 1.4.10.2 tls static void apple_smc_fan_sysctl_setup_1(struct apple_smc_tag *, 104 1.4.10.2 tls uint8_t); 105 1.4.10.2 tls #endif 106 1.4.10.2 tls 107 1.4.10.2 tls CFATTACH_DECL_NEW(apple_smc_fan, sizeof(struct apple_smc_fan_softc), 108 1.4.10.2 tls apple_smc_fan_match, apple_smc_fan_attach, apple_smc_fan_detach, NULL); 109 1.4.10.2 tls 110 1.4.10.2 tls static int 111 1.4.10.2 tls apple_smc_fan_match(device_t parent, cfdata_t match, void *aux) 112 1.4.10.2 tls { 113 1.4.10.2 tls const struct apple_smc_attach_args *asa = aux; 114 1.4.10.2 tls struct apple_smc_key *nfans_key; 115 1.4.10.2 tls uint8_t nfans; 116 1.4.10.2 tls int rv = 0; 117 1.4.10.2 tls int error; 118 1.4.10.2 tls 119 1.4.10.2 tls /* Find how to find how many fans there are. */ 120 1.4.10.2 tls error = apple_smc_named_key(asa->asa_smc, APPLE_SMC_NFANS_KEY, 121 1.4.10.2 tls APPLE_SMC_TYPE_UINT8, &nfans_key); 122 1.4.10.2 tls if (error) 123 1.4.10.2 tls goto out0; 124 1.4.10.2 tls 125 1.4.10.2 tls /* Find how many fans there are. */ 126 1.4.10.2 tls error = apple_smc_read_key_1(asa->asa_smc, nfans_key, &nfans); 127 1.4.10.2 tls if (error) 128 1.4.10.2 tls goto out1; 129 1.4.10.2 tls 130 1.4.10.2 tls /* Attach only if there's at least one fan. */ 131 1.4.10.2 tls if (nfans > 0) 132 1.4.10.2 tls rv = 1; 133 1.4.10.2 tls 134 1.4.10.2 tls out1: apple_smc_release_key(asa->asa_smc, nfans_key); 135 1.4.10.2 tls out0: return rv; 136 1.4.10.2 tls } 137 1.4.10.2 tls 138 1.4.10.2 tls static void 139 1.4.10.2 tls apple_smc_fan_attach(device_t parent, device_t self, void *aux) 140 1.4.10.2 tls { 141 1.4.10.2 tls struct apple_smc_fan_softc *sc = device_private(self); 142 1.4.10.2 tls const struct apple_smc_attach_args *asa = aux; 143 1.4.10.2 tls struct apple_smc_key *nfans_key; 144 1.4.10.2 tls int error; 145 1.4.10.2 tls 146 1.4.10.2 tls /* Identify ourselves. */ 147 1.4.10.2 tls aprint_normal(": Apple SMC fan sensors\n"); 148 1.4.10.2 tls 149 1.4.10.2 tls /* Initialize the softc. */ 150 1.4.10.2 tls sc->sc_dev = self; 151 1.4.10.2 tls sc->sc_smc = asa->asa_smc; 152 1.4.10.2 tls 153 1.4.10.2 tls /* Find how to find how many fans there are. */ 154 1.4.10.2 tls error = apple_smc_named_key(sc->sc_smc, APPLE_SMC_NFANS_KEY, 155 1.4.10.2 tls APPLE_SMC_TYPE_UINT8, &nfans_key); 156 1.4.10.2 tls if (error) 157 1.4.10.2 tls goto out0; 158 1.4.10.2 tls 159 1.4.10.2 tls /* Find how many fans there are. */ 160 1.4.10.2 tls error = apple_smc_read_key_1(sc->sc_smc, nfans_key, &sc->sc_nfans); 161 1.4.10.2 tls if (error) 162 1.4.10.2 tls goto out1; 163 1.4.10.2 tls 164 1.4.10.2 tls /* 165 1.4.10.2 tls * There should be at least one, but just in case the hardware 166 1.4.10.2 tls * changed its mind in the interim... 167 1.4.10.2 tls */ 168 1.4.10.2 tls if (sc->sc_nfans == 0) { 169 1.4.10.2 tls aprint_error_dev(self, "no fans\n"); 170 1.4.10.2 tls goto out1; 171 1.4.10.2 tls } 172 1.4.10.2 tls 173 1.4.10.2 tls /* 174 1.4.10.2 tls * The number of fans must fit in a single decimal digit for 175 1.4.10.2 tls * the names of the fan keys; see the fan_sensor table above. 176 1.4.10.2 tls */ 177 1.4.10.2 tls if (sc->sc_nfans >= 10) { 178 1.4.10.2 tls aprint_error_dev(self, "too many fans: %"PRIu8"\n", 179 1.4.10.2 tls sc->sc_nfans); 180 1.4.10.2 tls sc->sc_nfans = 9; 181 1.4.10.2 tls } 182 1.4.10.2 tls 183 1.4.10.2 tls #if 0 /* XXX sysctl */ 184 1.4.10.2 tls /* Set up the sysctl tree for controlling the fans. */ 185 1.4.10.2 tls error = apple_smc_fan_sysctl_setup(sc); 186 1.4.10.2 tls if (error) 187 1.4.10.2 tls goto fail0; 188 1.4.10.2 tls #endif 189 1.4.10.2 tls 190 1.4.10.2 tls /* Attach the sensors to sysmon_envsys. */ 191 1.4.10.2 tls error = apple_smc_fan_attach_sensors(sc); 192 1.4.10.2 tls if (error) 193 1.4.10.2 tls goto fail1; 194 1.4.10.2 tls 195 1.4.10.2 tls /* Success! */ 196 1.4.10.2 tls goto out1; 197 1.4.10.2 tls 198 1.4.10.2 tls #if 0 199 1.4.10.2 tls fail2: 200 1.4.10.2 tls apple_smc_fan_detach_sensors(sc); 201 1.4.10.2 tls #endif 202 1.4.10.2 tls 203 1.4.10.2 tls fail1: 204 1.4.10.2 tls #if 0 /* XXX sysctl */ 205 1.4.10.2 tls sysctl_teardown(&sc->sc_sysctl_log); 206 1.4.10.2 tls fail0: 207 1.4.10.2 tls #endif 208 1.4.10.2 tls 209 1.4.10.2 tls out1: apple_smc_release_key(sc->sc_smc, nfans_key); 210 1.4.10.2 tls out0: return; 211 1.4.10.2 tls } 212 1.4.10.2 tls 213 1.4.10.2 tls static int 214 1.4.10.2 tls apple_smc_fan_detach(device_t self, int flags) 215 1.4.10.2 tls { 216 1.4.10.2 tls struct apple_smc_fan_softc *sc = device_private(self); 217 1.4.10.2 tls 218 1.4.10.2 tls /* If we registered with sysmon_envsys, unregister. */ 219 1.4.10.2 tls if (sc->sc_sme != NULL) { 220 1.4.10.2 tls sysmon_envsys_unregister(sc->sc_sme); 221 1.4.10.2 tls sc->sc_sme = NULL; 222 1.4.10.2 tls 223 1.4.10.2 tls KASSERT(sc->sc_fans != NULL); 224 1.4.10.2 tls KASSERT(sc->sc_nfans > 0); 225 1.4.10.2 tls KASSERT(sc->sc_nfans < 10); 226 1.4.10.2 tls 227 1.4.10.2 tls /* Release the keys and free the memory for fan records. */ 228 1.4.10.2 tls apple_smc_fan_release_keys(sc); 229 1.4.10.2 tls kmem_free(sc->sc_fans, 230 1.4.10.2 tls (sizeof(sc->sc_fans[0]) * sc->sc_nfans)); 231 1.4.10.2 tls sc->sc_fans = NULL; 232 1.4.10.2 tls sc->sc_nfans = 0; 233 1.4.10.2 tls } 234 1.4.10.2 tls 235 1.4.10.2 tls #if 0 /* XXX sysctl */ 236 1.4.10.2 tls /* Tear down all the sysctl knobs we set up. */ 237 1.4.10.2 tls sysctl_teardown(&sc->sc_sysctl_log); 238 1.4.10.2 tls #endif 239 1.4.10.2 tls 240 1.4.10.2 tls return 0; 241 1.4.10.2 tls } 242 1.4.10.2 tls 243 1.4.10.2 tls static int 244 1.4.10.2 tls apple_smc_fan_attach_sensors(struct apple_smc_fan_softc *sc) 245 1.4.10.2 tls { 246 1.4.10.2 tls uint8_t fan, sensor; 247 1.4.10.2 tls char fan_desc_key_name[4 + 1]; 248 1.4.10.2 tls struct apple_smc_key *fan_desc_key; 249 1.4.10.2 tls struct fan_desc fan_desc; 250 1.4.10.2 tls char name[sizeof(fan_desc.fd_name) + 1]; 251 1.4.10.2 tls int error; 252 1.4.10.2 tls 253 1.4.10.2 tls /* Create a sysmon_envsys record, but don't register it yet. */ 254 1.4.10.2 tls sc->sc_sme = sysmon_envsys_create(); 255 1.4.10.2 tls sc->sc_sme->sme_name = device_xname(sc->sc_dev); 256 1.4.10.2 tls sc->sc_sme->sme_cookie = sc; 257 1.4.10.2 tls sc->sc_sme->sme_refresh = apple_smc_fan_refresh; 258 1.4.10.2 tls 259 1.4.10.2 tls /* Create an array of fan sensor records. */ 260 1.4.10.2 tls CTASSERT(10 <= (SIZE_MAX / sizeof(sc->sc_fans[0]))); 261 1.4.10.2 tls sc->sc_fans = kmem_zalloc((sizeof(sc->sc_fans[0]) * sc->sc_nfans), 262 1.4.10.2 tls KM_SLEEP); 263 1.4.10.2 tls 264 1.4.10.2 tls /* Find all the fans. */ 265 1.4.10.2 tls for (fan = 0; fan < sc->sc_nfans; fan++) { 266 1.4.10.2 tls 267 1.4.10.2 tls /* Format the name of the key for the fan's description. */ 268 1.4.10.2 tls (void)snprintf(fan_desc_key_name, sizeof(fan_desc_key_name), 269 1.4.10.2 tls "F%"PRIu8"ID", fan); 270 1.4.10.2 tls KASSERT(4 == strlen(fan_desc_key_name)); 271 1.4.10.2 tls 272 1.4.10.2 tls /* Look up the key for this fan's description. */ 273 1.4.10.2 tls error = apple_smc_named_key(sc->sc_smc, fan_desc_key_name, 274 1.4.10.2 tls APPLE_SMC_TYPE_FANDESC, &fan_desc_key); 275 1.4.10.2 tls if (error) { 276 1.4.10.2 tls aprint_error_dev(sc->sc_dev, 277 1.4.10.2 tls "error identifying fan %"PRIu8": %d\n", 278 1.4.10.2 tls fan, error); 279 1.4.10.2 tls continue; 280 1.4.10.2 tls } 281 1.4.10.2 tls 282 1.4.10.2 tls /* Read the description of this fan. */ 283 1.4.10.2 tls error = apple_smc_read_key(sc->sc_smc, fan_desc_key, &fan_desc, 284 1.4.10.2 tls sizeof(fan_desc)); 285 1.4.10.2 tls if (error) { 286 1.4.10.2 tls aprint_error_dev(sc->sc_dev, 287 1.4.10.2 tls "error identifying fan %"PRIu8": %d\n", 288 1.4.10.2 tls fan, error); 289 1.4.10.2 tls continue; 290 1.4.10.2 tls } 291 1.4.10.2 tls 292 1.4.10.2 tls /* 293 1.4.10.2 tls * XXX Do more with the fan description... 294 1.4.10.2 tls */ 295 1.4.10.2 tls 296 1.4.10.2 tls /* Make a null-terminated copy of this fan's description. */ 297 1.4.10.2 tls (void)memcpy(name, fan_desc.fd_name, sizeof(fan_desc.fd_name)); 298 1.4.10.2 tls name[sizeof(fan_desc.fd_name)] = '\0'; 299 1.4.10.2 tls 300 1.4.10.2 tls /* Attach all the sensors for this fan. */ 301 1.4.10.2 tls for (sensor = 0; sensor < __arraycount(fan_sensors); sensor++) 302 1.4.10.2 tls apple_smc_fan_attach_sensor(sc, fan, name, sensor); 303 1.4.10.2 tls 304 1.4.10.2 tls #if 0 /* XXX sysctl */ 305 1.4.10.2 tls /* Attach sysctl knobs to control this fan. */ 306 1.4.10.2 tls apple_smc_fan_sysctl_setup_1(sc, fan); 307 1.4.10.2 tls #endif 308 1.4.10.2 tls } 309 1.4.10.2 tls 310 1.4.10.2 tls /* Fan sensors are all attached. Register with sysmon_envsys now. */ 311 1.4.10.2 tls error = sysmon_envsys_register(sc->sc_sme); 312 1.4.10.2 tls if (error) 313 1.4.10.2 tls goto fail; 314 1.4.10.2 tls 315 1.4.10.2 tls /* Success! */ 316 1.4.10.2 tls error = 0; 317 1.4.10.2 tls goto out; 318 1.4.10.2 tls 319 1.4.10.2 tls fail: sysmon_envsys_destroy(sc->sc_sme); 320 1.4.10.2 tls sc->sc_sme = NULL; 321 1.4.10.2 tls out: return error; 322 1.4.10.2 tls } 323 1.4.10.2 tls 324 1.4.10.2 tls static void 325 1.4.10.2 tls apple_smc_fan_attach_sensor(struct apple_smc_fan_softc *sc, uint8_t fan, 326 1.4.10.2 tls const char *name, uint8_t sensor) 327 1.4.10.2 tls { 328 1.4.10.2 tls char key_name[4 + 1]; 329 1.4.10.2 tls struct apple_smc_key **keyp; 330 1.4.10.2 tls struct envsys_data *edata; 331 1.4.10.2 tls int error; 332 1.4.10.2 tls 333 1.4.10.2 tls KASSERT(fan < sc->sc_nfans); 334 1.4.10.2 tls KASSERT(sensor < __arraycount(fan_sensors)); 335 1.4.10.2 tls 336 1.4.10.2 tls /* Format the name of the key for this fan sensor. */ 337 1.4.10.2 tls (void)snprintf(key_name, sizeof(key_name), "F%d%s", 338 1.4.10.2 tls (int)sensor, fan_sensors[sensor].fs_key_suffix); 339 1.4.10.2 tls KASSERT(strlen(key_name) == 4); 340 1.4.10.2 tls 341 1.4.10.2 tls /* Look up the key for this fan sensor. */ 342 1.4.10.2 tls keyp = &sc->sc_fans[fan].sensors[sensor].sensor_key; 343 1.4.10.2 tls error = apple_smc_named_key(sc->sc_smc, key_name, APPLE_SMC_TYPE_FPE2, 344 1.4.10.2 tls keyp); 345 1.4.10.2 tls if (error) 346 1.4.10.2 tls goto fail0; 347 1.4.10.2 tls 348 1.4.10.2 tls /* Initialize the envsys_data record for this fan sensor. */ 349 1.4.10.2 tls edata = &sc->sc_fans[fan].sensors[sensor].sensor_data; 350 1.4.10.2 tls edata->units = ENVSYS_SFANRPM; 351 1.4.10.2 tls edata->state = ENVSYS_SINVALID; 352 1.4.10.2 tls edata->flags = ENVSYS_FHAS_ENTROPY; 353 1.4.10.2 tls (void)snprintf(edata->desc, sizeof(edata->desc), "fan %s %s speed", 354 1.4.10.2 tls name, fan_sensors[sensor].fs_name); 355 1.4.10.2 tls 356 1.4.10.2 tls /* Attach this fan sensor to sysmon_envsys. */ 357 1.4.10.2 tls error = sysmon_envsys_sensor_attach(sc->sc_sme, edata); 358 1.4.10.2 tls if (error) 359 1.4.10.2 tls goto fail1; 360 1.4.10.2 tls 361 1.4.10.2 tls /* Success! */ 362 1.4.10.2 tls return; 363 1.4.10.2 tls 364 1.4.10.2 tls fail1: apple_smc_release_key(sc->sc_smc, *keyp); 365 1.4.10.2 tls fail0: *keyp = NULL; 366 1.4.10.2 tls aprint_error_dev(sc->sc_dev, 367 1.4.10.2 tls "failed to attach fan %s %s speed sensor: %d\n", 368 1.4.10.2 tls name, fan_sensors[sensor].fs_name, error); 369 1.4.10.2 tls } 370 1.4.10.2 tls 371 1.4.10.2 tls static void 372 1.4.10.2 tls apple_smc_fan_refresh(struct sysmon_envsys *sme, struct envsys_data *edata) 373 1.4.10.2 tls { 374 1.4.10.2 tls struct apple_smc_fan_softc *sc = sme->sme_cookie; 375 1.4.10.2 tls uint8_t fan, sensor; 376 1.4.10.2 tls struct apple_smc_key *key; 377 1.4.10.2 tls uint16_t rpm; 378 1.4.10.2 tls int error; 379 1.4.10.2 tls 380 1.4.10.2 tls /* Sanity-check the sensor number out of paranoia. */ 381 1.4.10.2 tls CTASSERT(10 <= (SIZE_MAX / __arraycount(fan_sensors))); 382 1.4.10.2 tls KASSERT(sc->sc_nfans < 10); 383 1.4.10.2 tls if (edata->sensor >= (sc->sc_nfans * __arraycount(fan_sensors))) { 384 1.4.10.2 tls aprint_error_dev(sc->sc_dev, "unknown sensor %"PRIu32"\n", 385 1.4.10.2 tls edata->sensor); 386 1.4.10.2 tls return; 387 1.4.10.2 tls } 388 1.4.10.2 tls 389 1.4.10.2 tls /* Pick apart the fan number and its sensor number. */ 390 1.4.10.2 tls fan = (edata->sensor / __arraycount(fan_sensors)); 391 1.4.10.2 tls sensor = (edata->sensor % __arraycount(fan_sensors)); 392 1.4.10.2 tls 393 1.4.10.2 tls KASSERT(fan < sc->sc_nfans); 394 1.4.10.2 tls KASSERT(sensor < __arraycount(fan_sensors)); 395 1.4.10.2 tls KASSERT(edata == &sc->sc_fans[fan].sensors[sensor].sensor_data); 396 1.4.10.2 tls 397 1.4.10.2 tls /* 398 1.4.10.2 tls * If we're refreshing, this sensor got attached, so we ought 399 1.4.10.2 tls * to have a sensor key. Grab it. 400 1.4.10.2 tls */ 401 1.4.10.2 tls key = sc->sc_fans[fan].sensors[sensor].sensor_key; 402 1.4.10.2 tls KASSERT(key != NULL); 403 1.4.10.2 tls 404 1.4.10.2 tls /* Read the fan sensor value, in rpm. */ 405 1.4.10.2 tls error = apple_smc_read_key_2(sc->sc_smc, key, &rpm); 406 1.4.10.2 tls if (error) { 407 1.4.10.2 tls aprint_error_dev(sc->sc_dev, 408 1.4.10.2 tls "failed to read fan %d %s speed: %d\n", 409 1.4.10.2 tls fan, fan_sensors[sensor].fs_name, error); 410 1.4.10.2 tls edata->state = ENVSYS_SINVALID; 411 1.4.10.2 tls return; 412 1.4.10.2 tls } 413 1.4.10.2 tls 414 1.4.10.2 tls /* Success! */ 415 1.4.10.2 tls edata->value_cur = rpm; 416 1.4.10.2 tls edata->state = ENVSYS_SVALID; 417 1.4.10.2 tls } 418 1.4.10.2 tls 419 1.4.10.2 tls static void 420 1.4.10.2 tls apple_smc_fan_release_keys(struct apple_smc_fan_softc *sc) 421 1.4.10.2 tls { 422 1.4.10.2 tls uint8_t fan, sensor; 423 1.4.10.2 tls 424 1.4.10.2 tls for (fan = 0; fan < sc->sc_nfans; fan++) { 425 1.4.10.2 tls for (sensor = 0; 426 1.4.10.2 tls sensor < __arraycount(fan_sensors); 427 1.4.10.2 tls sensor++) { 428 1.4.10.2 tls struct apple_smc_key **const keyp = 429 1.4.10.2 tls &sc->sc_fans[fan].sensors[sensor].sensor_key; 430 1.4.10.2 tls if (*keyp != NULL) { 431 1.4.10.2 tls apple_smc_release_key(sc->sc_smc, *keyp); 432 1.4.10.2 tls *keyp = NULL; 433 1.4.10.2 tls } 434 1.4.10.2 tls } 435 1.4.10.2 tls } 436 1.4.10.2 tls } 437 1.4.10.2 tls 438 1.4.10.2 tls #if 0 /* XXX sysctl */ 439 1.4.10.2 tls static int 440 1.4.10.2 tls apple_smc_fan_sysctl_setup(struct apple_smc_fan_softc *sc) 441 1.4.10.2 tls { 442 1.4.10.2 tls ... 443 1.4.10.2 tls } 444 1.4.10.2 tls 445 1.4.10.2 tls static void 446 1.4.10.2 tls apple_smc_fan_sysctl_setup_1(struct apple_smc_fan_softc *sc, uint8_t fan) 447 1.4.10.2 tls { 448 1.4.10.2 tls } 449 1.4.10.2 tls #endif 450 1.4.10.2 tls 451 1.4.10.3 jdolecek MODULE(MODULE_CLASS_DRIVER, apple_smc_fan, "apple_smc,sysmon_envsys"); 452 1.4.10.2 tls 453 1.4.10.2 tls #ifdef _MODULE 454 1.4.10.2 tls #include "ioconf.c" 455 1.4.10.2 tls #endif 456 1.4.10.2 tls 457 1.4.10.2 tls static int 458 1.4.10.2 tls apple_smc_fan_modcmd(modcmd_t cmd, void *arg __unused) 459 1.4.10.2 tls { 460 1.4.10.2 tls #ifdef _MODULE 461 1.4.10.2 tls int error; 462 1.4.10.2 tls #endif 463 1.4.10.2 tls 464 1.4.10.2 tls switch (cmd) { 465 1.4.10.2 tls case MODULE_CMD_INIT: 466 1.4.10.2 tls #ifdef _MODULE 467 1.4.10.2 tls error = config_init_component(cfdriver_ioconf_apple_smc_fan, 468 1.4.10.2 tls cfattach_ioconf_apple_smc_fan, 469 1.4.10.2 tls cfdata_ioconf_apple_smc_fan); 470 1.4.10.2 tls if (error) 471 1.4.10.2 tls return error; 472 1.4.10.2 tls #endif 473 1.4.10.2 tls return 0; 474 1.4.10.2 tls 475 1.4.10.2 tls case MODULE_CMD_FINI: 476 1.4.10.2 tls #ifdef _MODULE 477 1.4.10.2 tls error = config_fini_component(cfdriver_ioconf_apple_smc_fan, 478 1.4.10.2 tls cfattach_ioconf_apple_smc_fan, 479 1.4.10.2 tls cfdata_ioconf_apple_smc_fan); 480 1.4.10.2 tls if (error) 481 1.4.10.2 tls return error; 482 1.4.10.2 tls #endif 483 1.4.10.2 tls return 0; 484 1.4.10.2 tls 485 1.4.10.2 tls default: 486 1.4.10.2 tls return ENOTTY; 487 1.4.10.2 tls } 488 1.4.10.2 tls } 489
Indexes created Wed Oct 22 06:10:02 GMT 2025