acpi_apm.c revision 1.6
1 /* $NetBSD: acpi_apm.c,v 1.6 2006/10/11 19:14:29 gdt Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas and by Jared McNeill. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Autoconfiguration support for the Intel ACPI Component Architecture 41 * ACPI reference implementation. 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: acpi_apm.c,v 1.6 2006/10/11 19:14:29 gdt Exp $"); 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/device.h> 50 #include <sys/malloc.h> 51 #include <sys/kernel.h> 52 #include <sys/proc.h> 53 #include <sys/sysctl.h> 54 #include <sys/select.h> 55 #include <sys/envsys.h> 56 #include <dev/sysmon/sysmonvar.h> 57 58 #include <dev/acpi/acpica.h> 59 #include <dev/apm/apmvar.h> 60 61 static void acpiapm_disconnect(void *); 62 static void acpiapm_enable(void *, int); 63 static int acpiapm_set_powstate(void *, u_int, u_int); 64 static int acpiapm_get_powstat(void *, u_int, struct apm_power_info *); 65 static int acpiapm_get_event(void *, u_int *, u_int *); 66 static void acpiapm_cpu_busy(void *); 67 static void acpiapm_cpu_idle(void *); 68 static void acpiapm_get_capabilities(void *, u_int *, u_int *); 69 70 struct apm_accessops acpiapm_accessops = { 71 acpiapm_disconnect, 72 acpiapm_enable, 73 acpiapm_set_powstate, 74 acpiapm_get_powstat, 75 acpiapm_get_event, 76 acpiapm_cpu_busy, 77 acpiapm_cpu_idle, 78 acpiapm_get_capabilities, 79 }; 80 81 #ifdef ACPI_APM_DEBUG 82 #define DPRINTF(a) uprintf a 83 #else 84 #define DPRINTF(a) 85 #endif 86 87 #ifndef ACPI_APM_DEFAULT_STANDBY_STATE 88 #define ACPI_APM_DEFAULT_STANDBY_STATE (1) 89 #endif 90 #ifndef ACPI_APM_DEFAULT_SUSPEND_STATE 91 #define ACPI_APM_DEFAULT_SUSPEND_STATE (3) 92 #endif 93 #define ACPI_APM_DEFAULT_CAP \ 94 ((ACPI_APM_DEFAULT_STANDBY_STATE!=0 ? APM_GLOBAL_STANDBY : 0) | \ 95 (ACPI_APM_DEFAULT_SUSPEND_STATE!=0 ? APM_GLOBAL_SUSPEND : 0)) 96 #define ACPI_APM_STATE_MIN (0) 97 #define ACPI_APM_STATE_MAX (4) 98 99 /* It is assumed that there is only acpiapm instance. */ 100 static int resumed = 0, capability_changed = 0; 101 static int standby_state = ACPI_APM_DEFAULT_STANDBY_STATE; 102 static int suspend_state = ACPI_APM_DEFAULT_SUSPEND_STATE; 103 static int capabilities = ACPI_APM_DEFAULT_CAP; 104 static int acpiapm_node = CTL_EOL, standby_node = CTL_EOL; 105 106 struct acpi_softc; 107 extern ACPI_STATUS acpi_enter_sleep_state(struct acpi_softc *, int); 108 static int acpiapm_match(struct device *, struct cfdata *, void *); 109 static void acpiapm_attach(struct device *, struct device *, void *); 110 static int sysctl_state(SYSCTLFN_PROTO); 111 112 CFATTACH_DECL(acpiapm, sizeof(struct apm_softc), 113 acpiapm_match, acpiapm_attach, NULL, NULL); 114 115 static int 116 /*ARGSUSED*/ 117 acpiapm_match(struct device *parent, struct cfdata *match, void *aux) 118 { 119 return apm_match(); 120 } 121 122 static void 123 /*ARGSUSED*/ 124 acpiapm_attach(struct device *parent, struct device *self, void *aux) 125 { 126 struct apm_softc *sc = (struct apm_softc *)self; 127 128 sc->sc_ops = &acpiapm_accessops; 129 sc->sc_cookie = parent; 130 sc->sc_vers = 0x0102; 131 sc->sc_detail = 0; 132 sc->sc_hwflags = APM_F_DONT_RUN_HOOKS; 133 apm_attach(sc); 134 } 135 136 static int 137 get_state_value(int id) 138 { 139 const int states[] = { 140 ACPI_STATE_S0, 141 ACPI_STATE_S1, 142 ACPI_STATE_S2, 143 ACPI_STATE_S3, 144 ACPI_STATE_S4 145 }; 146 147 if (id < ACPI_APM_STATE_MIN || id > ACPI_APM_STATE_MAX) 148 return ACPI_STATE_S0; 149 150 return states[id]; 151 } 152 153 static int 154 sysctl_state(SYSCTLFN_ARGS) 155 { 156 int newstate, error, *ref, cap, oldcap; 157 struct sysctlnode node; 158 159 if (rnode->sysctl_num == standby_node) { 160 ref = &standby_state; 161 cap = APM_GLOBAL_STANDBY; 162 } else { 163 ref = &suspend_state; 164 cap = APM_GLOBAL_SUSPEND; 165 } 166 167 newstate = *ref; 168 node = *rnode; 169 node.sysctl_data = &newstate; 170 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 171 if (error || newp == NULL) 172 return error; 173 174 if (newstate < ACPI_APM_STATE_MIN || newstate > ACPI_APM_STATE_MAX) 175 return EINVAL; 176 177 *ref = newstate; 178 oldcap = capabilities; 179 capabilities = newstate != 0 ? oldcap | cap : oldcap & ~cap; 180 if ((capabilities ^ oldcap) != 0) 181 capability_changed = 1; 182 183 return 0; 184 } 185 186 SYSCTL_SETUP(sysctl_acpiapm_setup, "sysctl machdep.acpiapm subtree setup") 187 { 188 const struct sysctlnode *node; 189 190 if (sysctl_createv(clog, 0, NULL, NULL, 191 CTLFLAG_PERMANENT, 192 CTLTYPE_NODE, "machdep", NULL, 193 NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL)) 194 return; 195 196 if (sysctl_createv(clog, 0, NULL, &node, 197 CTLFLAG_PERMANENT, 198 CTLTYPE_NODE, "acpiapm", NULL, 199 NULL, 0, NULL, 0, 200 CTL_MACHDEP, CTL_CREATE, CTL_EOL)) 201 return; 202 acpiapm_node = node->sysctl_num; 203 204 if (sysctl_createv(clog, 0, NULL, &node, 205 CTLFLAG_READWRITE, 206 CTLTYPE_INT, "standby", NULL, 207 &sysctl_state, 0, NULL, 0, 208 CTL_MACHDEP, acpiapm_node, CTL_CREATE, CTL_EOL)) 209 return; 210 standby_node = node->sysctl_num; 211 212 if (sysctl_createv(clog, 0, NULL, NULL, 213 CTLFLAG_READWRITE, 214 CTLTYPE_INT, "suspend", NULL, 215 &sysctl_state, 0, NULL, 0, 216 CTL_MACHDEP, acpiapm_node, CTL_CREATE, CTL_EOL)) 217 return; 218 } 219 220 /***************************************************************************** 221 * Minimalistic ACPI /dev/apm emulation support, for ACPI suspend 222 *****************************************************************************/ 223 224 static void 225 /*ARGSUSED*/ 226 acpiapm_disconnect(void *opaque) 227 { 228 return; 229 } 230 231 static void 232 /*ARGSUSED*/ 233 acpiapm_enable(void *opaque, int onoff) 234 { 235 return; 236 } 237 238 static int 239 acpiapm_set_powstate(void *opaque, u_int devid, u_int powstat) 240 { 241 struct acpi_softc *sc = opaque; 242 243 if (devid != APM_DEV_ALLDEVS) 244 return APM_ERR_UNRECOG_DEV; 245 246 switch (powstat) { 247 case APM_SYS_READY: 248 break; 249 case APM_SYS_STANDBY: 250 acpi_enter_sleep_state(sc, get_state_value(standby_state)); 251 resumed = 1; 252 break; 253 case APM_SYS_SUSPEND: 254 acpi_enter_sleep_state(sc, get_state_value(suspend_state)); 255 resumed = 1; 256 break; 257 case APM_SYS_OFF: 258 break; 259 case APM_LASTREQ_INPROG: 260 break; 261 case APM_LASTREQ_REJECTED: 262 break; 263 } 264 265 return 0; 266 } 267 268 static int 269 /*ARGSUSED*/ 270 acpiapm_get_powstat(void *opaque, u_int batteryid, struct apm_power_info *pinfo) 271 { 272 #define APM_BATT_FLAG_WATERMARK_MASK (APM_BATT_FLAG_CRITICAL | \ 273 APM_BATT_FLAG_LOW | \ 274 APM_BATT_FLAG_HIGH) 275 int i, curcap, lowcap, warncap, cap, descap, lastcap, discharge; 276 int cap_valid, lastcap_valid, discharge_valid; 277 envsys_tre_data_t etds; 278 envsys_basic_info_t ebis; 279 280 /* Denote most variables as unitialized. */ 281 curcap = lowcap = warncap = descap = -1; 282 283 /* Prepare to aggregate these two variables over all batteries. */ 284 cap = lastcap = discharge = 0; 285 cap_valid = lastcap_valid = discharge_valid = 0; 286 287 (void)memset(pinfo, 0, sizeof(*pinfo)); 288 pinfo->ac_state = APM_AC_UNKNOWN; 289 pinfo->minutes_valid = 0; 290 pinfo->minutes_left = 0xffff; /* unknown */ 291 pinfo->batteryid = 0; 292 pinfo->nbattery = 0; /* to be incremented as batteries are found */ 293 pinfo->battery_flags = 0; 294 pinfo->battery_state = APM_BATT_UNKNOWN; /* ignored */ 295 pinfo->battery_life = APM_BATT_LIFE_UNKNOWN; 296 297 for (i = 0;; i++) { 298 const char *desc; 299 int data; 300 int flags; 301 302 ebis.sensor = i; 303 if (sysmonioctl_envsys(0, ENVSYS_GTREINFO, (void *)&ebis, 0, 304 NULL) || (ebis.validflags & ENVSYS_FVALID) == 0) 305 break; 306 etds.sensor = i; 307 if (sysmonioctl_envsys(0, ENVSYS_GTREDATA, (void *)&etds, 0, 308 NULL)) 309 continue; 310 desc = ebis.desc; 311 flags = etds.validflags; 312 data = etds.cur.data_s; 313 314 DPRINTF(("%d %s %d %d\n", i, desc, data, flags)); 315 if ((flags & ENVSYS_FCURVALID) == 0) 316 continue; 317 if (strstr(desc, " disconnected")) { 318 pinfo->ac_state = data ? APM_AC_OFF : APM_AC_ON; 319 } else if (strstr(desc, " present") && data == 0) 320 pinfo->battery_flags |= APM_BATT_FLAG_NO_SYSTEM_BATTERY; 321 else if (strstr(desc, " charging") && data) 322 pinfo->battery_flags |= APM_BATT_FLAG_CHARGING; 323 else if (strstr(desc, " discharging") && data) 324 pinfo->battery_flags &= ~APM_BATT_FLAG_CHARGING; 325 else if (strstr(desc, " warn cap")) 326 warncap = data / 1000; 327 else if (strstr(desc, " low cap")) 328 lowcap = data / 1000; 329 else if (strstr(desc, " last full cap")) { 330 lastcap += data / 1000; 331 lastcap_valid = 1; 332 } 333 else if (strstr(desc, " design cap")) 334 descap = data / 1000; 335 else if (strstr(desc, " charge") && 336 strstr(desc, " charge rate") == NULL) { 337 cap += data / 1000; 338 cap_valid = 1; 339 pinfo->nbattery++; 340 } 341 else if (strstr(desc, " discharge rate")) { 342 discharge += data / 1000; 343 discharge_valid = 1; 344 } 345 } 346 347 if (cap_valid > 0) { 348 if (warncap != -1 && cap < warncap) 349 pinfo->battery_flags |= APM_BATT_FLAG_CRITICAL; 350 else if (lowcap != -1) { 351 if (cap < lowcap) 352 pinfo->battery_flags |= APM_BATT_FLAG_LOW; 353 else 354 pinfo->battery_flags |= APM_BATT_FLAG_HIGH; 355 } 356 if (lastcap_valid > 0 && lastcap != 0) 357 pinfo->battery_life = 100 * cap / lastcap; 358 else if (descap != -1 && descap != 0) 359 pinfo->battery_life = 100 * cap / descap; 360 } 361 362 if ((pinfo->battery_flags & APM_BATT_FLAG_CHARGING) == 0) { 363 /* discharging */ 364 if (discharge != -1 && cap != -1 && discharge != 0) 365 pinfo->minutes_left = 60 * cap / discharge; 366 } 367 if ((pinfo->battery_flags & APM_BATT_FLAG_WATERMARK_MASK) == 0 && 368 (pinfo->battery_flags & APM_BATT_FLAG_NO_SYSTEM_BATTERY) == 0) { 369 if (pinfo->ac_state == APM_AC_ON) 370 pinfo->battery_flags |= APM_BATT_FLAG_HIGH; 371 else 372 pinfo->battery_flags |= APM_BATT_FLAG_LOW; 373 } 374 375 DPRINTF(("%d %d %d %d %d %d\n", cap, warncap, lowcap, lastcap, descap, 376 discharge)); 377 DPRINTF(("pinfo %d %d %d\n", pinfo->battery_flags, 378 pinfo->battery_life, pinfo->battery_life)); 379 return 0; 380 } 381 382 static int 383 /*ARGSUSED*/ 384 acpiapm_get_event(void *opaque, u_int *event_type, u_int *event_info) 385 { 386 if (capability_changed) { 387 capability_changed = 0; 388 *event_type = APM_CAP_CHANGE; 389 *event_info = 0; 390 return 0; 391 } 392 if (resumed) { 393 resumed = 0; 394 *event_type = APM_NORMAL_RESUME; 395 *event_info = 0; 396 return 0; 397 } 398 399 return APM_ERR_NOEVENTS; 400 } 401 402 static void 403 /*ARGSUSED*/ 404 acpiapm_cpu_busy(void *opaque) 405 { 406 return; 407 } 408 409 static void 410 /*ARGSUSED*/ 411 acpiapm_cpu_idle(void *opaque) 412 { 413 return; 414 } 415 416 static void 417 /*ARGSUSED*/ 418 acpiapm_get_capabilities(void *opaque, u_int *numbatts, u_int *capflags) 419 { 420 *numbatts = 1; 421 *capflags = capabilities; 422 return; 423 } 424
Indexes created Tue Sep 23 23:09:58 GMT 2025