1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2006 Michael Lorenz 5 * Copyright 2008 by Nathan Whitehorn 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/module.h> 34 #include <sys/bus.h> 35 #include <sys/conf.h> 36 #include <sys/eventhandler.h> 37 #include <sys/kernel.h> 38 #include <sys/kthread.h> 39 #include <sys/lock.h> 40 #include <sys/mutex.h> 41 #include <sys/clock.h> 42 #include <sys/proc.h> 43 #include <sys/reboot.h> 44 #include <sys/sysctl.h> 45 46 #include <dev/ofw/ofw_bus.h> 47 #include <dev/ofw/openfirm.h> 48 #include <dev/led/led.h> 49 50 #include <machine/_inttypes.h> 51 #include <machine/bus.h> 52 #include <machine/cpu.h> 53 #include <machine/hid.h> 54 #include <machine/intr_machdep.h> 55 #include <machine/md_var.h> 56 #include <machine/pcb.h> 57 #include <machine/pio.h> 58 #include <machine/resource.h> 59 60 #include <vm/vm.h> 61 #include <vm/pmap.h> 62 63 #include <sys/rman.h> 64 65 #include <dev/adb/adb.h> 66 67 #include "clock_if.h" 68 #include "pmuvar.h" 69 #include "viareg.h" 70 #include "uninorthvar.h" /* For unin_chip_sleep()/unin_chip_wake() */ 71 72 #define PMU_DEFAULTS PMU_INT_TICK | PMU_INT_ADB | \ 73 PMU_INT_PCEJECT | PMU_INT_SNDBRT | \ 74 PMU_INT_BATTERY | PMU_INT_ENVIRONMENT 75 76 /* 77 * Bus interface 78 */ 79 static int pmu_probe(device_t); 80 static int pmu_attach(device_t); 81 static int pmu_detach(device_t); 82 83 /* 84 * Clock interface 85 */ 86 static int pmu_gettime(device_t dev, struct timespec *ts); 87 static int pmu_settime(device_t dev, struct timespec *ts); 88 89 /* 90 * ADB Interface 91 */ 92 93 static u_int pmu_adb_send(device_t dev, u_char command_byte, int len, 94 u_char *data, u_char poll); 95 static u_int pmu_adb_autopoll(device_t dev, uint16_t mask); 96 static u_int pmu_poll(device_t dev); 97 98 /* 99 * Power interface 100 */ 101 102 static void pmu_shutdown(void *xsc, int howto); 103 static void pmu_set_sleepled(void *xsc, int onoff); 104 static int pmu_server_mode(SYSCTL_HANDLER_ARGS); 105 static int pmu_acline_state(SYSCTL_HANDLER_ARGS); 106 static int pmu_query_battery(struct pmu_softc *sc, int batt, 107 struct pmu_battstate *info); 108 static int pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS); 109 static int pmu_battmon(SYSCTL_HANDLER_ARGS); 110 static void pmu_battquery_proc(void); 111 static void pmu_battery_notify(struct pmu_battstate *batt, 112 struct pmu_battstate *old); 113 114 /* 115 * List of battery-related sysctls we might ask for 116 */ 117 118 enum { 119 PMU_BATSYSCTL_PRESENT = 1 << 8, 120 PMU_BATSYSCTL_CHARGING = 2 << 8, 121 PMU_BATSYSCTL_CHARGE = 3 << 8, 122 PMU_BATSYSCTL_MAXCHARGE = 4 << 8, 123 PMU_BATSYSCTL_CURRENT = 5 << 8, 124 PMU_BATSYSCTL_VOLTAGE = 6 << 8, 125 PMU_BATSYSCTL_TIME = 7 << 8, 126 PMU_BATSYSCTL_LIFE = 8 << 8 127 }; 128 129 static device_method_t pmu_methods[] = { 130 /* Device interface */ 131 DEVMETHOD(device_probe, pmu_probe), 132 DEVMETHOD(device_attach, pmu_attach), 133 DEVMETHOD(device_detach, pmu_detach), 134 DEVMETHOD(device_shutdown, bus_generic_shutdown), 135 136 /* ADB bus interface */ 137 DEVMETHOD(adb_hb_send_raw_packet, pmu_adb_send), 138 DEVMETHOD(adb_hb_controller_poll, pmu_poll), 139 DEVMETHOD(adb_hb_set_autopoll_mask, pmu_adb_autopoll), 140 141 /* Clock interface */ 142 DEVMETHOD(clock_gettime, pmu_gettime), 143 DEVMETHOD(clock_settime, pmu_settime), 144 145 DEVMETHOD_END 146 }; 147 148 static driver_t pmu_driver = { 149 "pmu", 150 pmu_methods, 151 sizeof(struct pmu_softc), 152 }; 153 154 EARLY_DRIVER_MODULE(pmu, macio, pmu_driver, 0, 0, BUS_PASS_RESOURCE); 155 DRIVER_MODULE(adb, pmu, adb_driver, 0, 0); 156 157 static int pmuextint_probe(device_t); 158 static int pmuextint_attach(device_t); 159 160 static device_method_t pmuextint_methods[] = { 161 /* Device interface */ 162 DEVMETHOD(device_probe, pmuextint_probe), 163 DEVMETHOD(device_attach, pmuextint_attach), 164 {0,0} 165 }; 166 167 static driver_t pmuextint_driver = { 168 "pmuextint", 169 pmuextint_methods, 170 0 171 }; 172 173 EARLY_DRIVER_MODULE(pmuextint, macgpio, pmuextint_driver, 0, 0, 174 BUS_PASS_RESOURCE); 175 176 /* Make sure uhid is loaded, as it turns off some of the ADB emulation */ 177 MODULE_DEPEND(pmu, usb, 1, 1, 1); 178 179 static void pmu_intr(void *arg); 180 static void pmu_in(struct pmu_softc *sc); 181 static void pmu_out(struct pmu_softc *sc); 182 static void pmu_ack_on(struct pmu_softc *sc); 183 static void pmu_ack_off(struct pmu_softc *sc); 184 static int pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, 185 int rlen, uint8_t *out_msg); 186 static uint8_t pmu_read_reg(struct pmu_softc *sc, u_int offset); 187 static void pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value); 188 static int pmu_intr_state(struct pmu_softc *); 189 190 /* these values shows that number of data returned after 'send' cmd is sent */ 191 static signed char pm_send_cmd_type[] = { 192 -1, -1, -1, -1, -1, -1, -1, -1, 193 -1, -1, -1, -1, -1, -1, -1, -1, 194 0x01, 0x01, -1, -1, -1, -1, -1, -1, 195 0x00, 0x00, -1, -1, -1, -1, -1, 0x00, 196 -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1, 197 0x00, -1, -1, -1, -1, -1, -1, -1, 198 0x04, 0x14, -1, 0x03, -1, -1, -1, -1, 199 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, 200 0x01, 0x01, -1, -1, -1, -1, -1, -1, 201 0x00, 0x00, -1, -1, 0x01, -1, -1, -1, 202 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01, 203 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1, 204 0x02, -1, -1, -1, -1, -1, -1, -1, 205 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, 206 0x01, 0x01, 0x01, -1, -1, -1, -1, -1, 207 0x00, 0x00, -1, -1, -1, 0x05, 0x04, 0x04, 208 0x04, -1, 0x00, -1, -1, -1, -1, -1, 209 0x00, -1, -1, -1, -1, -1, -1, -1, 210 0x01, 0x02, -1, -1, -1, -1, -1, -1, 211 0x00, 0x00, -1, -1, -1, -1, -1, -1, 212 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1, 213 0x01, 0x01, 0x03, 0x02, -1, -1, -1, -1, 214 -1, -1, -1, -1, -1, -1, -1, -1, 215 -1, -1, -1, -1, -1, -1, -1, -1, 216 -1, -1, -1, -1, -1, -1, -1, -1, 217 -1, -1, -1, -1, -1, -1, -1, -1, 218 0x00, -1, -1, -1, -1, -1, -1, -1, 219 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1, 220 -1, 0x04, 0x00, -1, -1, -1, -1, -1, 221 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00, 222 -1, -1, -1, -1, -1, -1, -1, -1, 223 -1, -1, -1, -1, -1, -1, -1, -1 224 }; 225 226 /* these values shows that number of data returned after 'receive' cmd is sent */ 227 static signed char pm_receive_cmd_type[] = { 228 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 229 -1, -1, -1, -1, -1, -1, -1, -1, 230 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 231 0x02, 0x02, -1, -1, -1, -1, -1, 0x00, 232 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 233 -1, -1, -1, -1, -1, -1, -1, -1, 234 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 235 0x05, 0x15, -1, 0x02, -1, -1, -1, -1, 236 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 237 0x02, 0x02, -1, -1, -1, -1, -1, -1, 238 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 239 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1, 240 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 241 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1, 242 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 243 -1, -1, -1, -1, -1, 0x01, 0x01, 0x01, 244 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 245 0x06, -1, -1, -1, -1, -1, -1, -1, 246 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 247 0x02, 0x02, -1, -1, -1, -1, -1, -1, 248 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 249 0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1, 250 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 251 -1, -1, -1, -1, -1, -1, -1, -1, 252 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 253 -1, -1, -1, -1, -1, -1, -1, -1, 254 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 255 0x02, 0x02, -1, -1, 0x02, -1, -1, -1, 256 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 257 -1, -1, 0x02, -1, -1, -1, -1, 0x00, 258 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 259 -1, -1, -1, -1, -1, -1, -1, -1, 260 }; 261 262 static int pmu_battmon_enabled = 1; 263 static struct proc *pmubattproc; 264 static struct kproc_desc pmu_batt_kp = { 265 "pmu_batt", 266 pmu_battquery_proc, 267 &pmubattproc 268 }; 269 270 /* We only have one of each device, so globals are safe */ 271 static device_t pmu = NULL; 272 static device_t pmu_extint = NULL; 273 274 static int 275 pmuextint_probe(device_t dev) 276 { 277 const char *type = ofw_bus_get_type(dev); 278 279 if (strcmp(type, "extint-gpio1") != 0) 280 return (ENXIO); 281 282 device_set_desc(dev, "Apple PMU99 External Interrupt"); 283 return (0); 284 } 285 286 static int 287 pmu_probe(device_t dev) 288 { 289 const char *type = ofw_bus_get_type(dev); 290 291 if (strcmp(type, "via-pmu") != 0) 292 return (ENXIO); 293 294 device_set_desc(dev, "Apple PMU99 Controller"); 295 return (0); 296 } 297 298 static int 299 setup_pmu_intr(device_t dev, device_t extint) 300 { 301 struct pmu_softc *sc; 302 sc = device_get_softc(dev); 303 304 sc->sc_irqrid = 0; 305 sc->sc_irq = bus_alloc_resource_any(extint, SYS_RES_IRQ, &sc->sc_irqrid, 306 RF_ACTIVE); 307 if (sc->sc_irq == NULL) { 308 device_printf(dev, "could not allocate interrupt\n"); 309 return (ENXIO); 310 } 311 312 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC | INTR_MPSAFE 313 | INTR_ENTROPY, NULL, pmu_intr, dev, &sc->sc_ih) != 0) { 314 device_printf(dev, "could not setup interrupt\n"); 315 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, 316 sc->sc_irq); 317 return (ENXIO); 318 } 319 320 return (0); 321 } 322 323 static int 324 pmuextint_attach(device_t dev) 325 { 326 pmu_extint = dev; 327 if (pmu) 328 return (setup_pmu_intr(pmu,dev)); 329 330 return (0); 331 } 332 333 static int 334 pmu_attach(device_t dev) 335 { 336 struct pmu_softc *sc; 337 338 int i; 339 uint8_t reg; 340 uint8_t cmd[2] = {2, 0}; 341 uint8_t resp[16]; 342 phandle_t node,child; 343 struct sysctl_ctx_list *ctx; 344 struct sysctl_oid *tree; 345 346 sc = device_get_softc(dev); 347 sc->sc_dev = dev; 348 349 sc->sc_memrid = 0; 350 sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 351 &sc->sc_memrid, RF_ACTIVE); 352 353 mtx_init(&sc->sc_mutex,"pmu",NULL,MTX_DEF | MTX_RECURSE); 354 355 if (sc->sc_memr == NULL) { 356 device_printf(dev, "Could not alloc mem resource!\n"); 357 return (ENXIO); 358 } 359 360 /* 361 * Our interrupt is attached to a GPIO pin. Depending on probe order, 362 * we may not have found it yet. If we haven't, it will find us, and 363 * attach our interrupt then. 364 */ 365 pmu = dev; 366 if (pmu_extint != NULL) { 367 if (setup_pmu_intr(dev,pmu_extint) != 0) 368 return (ENXIO); 369 } 370 371 sc->sc_autopoll = 0; 372 sc->sc_batteries = 0; 373 sc->adb_bus = NULL; 374 sc->sc_leddev = NULL; 375 376 /* Init PMU */ 377 378 pmu_write_reg(sc, vBufB, pmu_read_reg(sc, vBufB) | vPB4); 379 pmu_write_reg(sc, vDirB, (pmu_read_reg(sc, vDirB) | vPB4) & ~vPB3); 380 381 reg = PMU_DEFAULTS; 382 pmu_send(sc, PMU_SET_IMASK, 1, ®, 16, resp); 383 384 pmu_write_reg(sc, vIER, 0x94); /* make sure VIA interrupts are on */ 385 386 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp); 387 pmu_send(sc, PMU_GET_VERSION, 0, cmd, 16, resp); 388 389 /* Initialize child buses (ADB) */ 390 node = ofw_bus_get_node(dev); 391 392 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 393 char name[32]; 394 395 memset(name, 0, sizeof(name)); 396 OF_getprop(child, "name", name, sizeof(name)); 397 398 if (bootverbose) 399 device_printf(dev, "PMU child <%s>\n",name); 400 401 if (strncmp(name, "adb", 4) == 0) { 402 sc->adb_bus = device_add_child(dev,"adb",-1); 403 } 404 405 if (strncmp(name, "power-mgt", 9) == 0) { 406 uint32_t prim_info[9]; 407 408 if (OF_getprop(child, "prim-info", prim_info, 409 sizeof(prim_info)) >= 7) 410 sc->sc_batteries = (prim_info[6] >> 16) & 0xff; 411 412 if (bootverbose && sc->sc_batteries > 0) 413 device_printf(dev, "%d batteries detected\n", 414 sc->sc_batteries); 415 } 416 } 417 418 /* 419 * Set up sysctls 420 */ 421 422 ctx = device_get_sysctl_ctx(dev); 423 tree = device_get_sysctl_tree(dev); 424 425 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 426 "server_mode", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, sc, 0, 427 pmu_server_mode, "I", "Enable reboot after power failure"); 428 429 if (sc->sc_batteries > 0) { 430 struct sysctl_oid *oid, *battroot; 431 char battnum[2]; 432 433 /* Only start the battery monitor if we have a battery. */ 434 kproc_start(&pmu_batt_kp); 435 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 436 "monitor_batteries", 437 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0, 438 pmu_battmon, "I", "Post battery events to devd"); 439 440 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 441 "acline", CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 442 0, pmu_acline_state, "I", "AC Line Status"); 443 444 battroot = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 445 "batteries", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 446 "Battery Information"); 447 448 for (i = 0; i < sc->sc_batteries; i++) { 449 battnum[0] = i + '0'; 450 battnum[1] = '\0'; 451 452 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(battroot), 453 OID_AUTO, battnum, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 454 "Battery Information"); 455 456 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 457 "present", 458 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 459 PMU_BATSYSCTL_PRESENT | i, pmu_battquery_sysctl, 460 "I", "Battery present"); 461 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 462 "charging", 463 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 464 PMU_BATSYSCTL_CHARGING | i, pmu_battquery_sysctl, 465 "I", "Battery charging"); 466 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 467 "charge", 468 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 469 PMU_BATSYSCTL_CHARGE | i, pmu_battquery_sysctl, 470 "I", "Battery charge (mAh)"); 471 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 472 "maxcharge", 473 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 474 PMU_BATSYSCTL_MAXCHARGE | i, pmu_battquery_sysctl, 475 "I", "Maximum battery capacity (mAh)"); 476 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 477 "rate", 478 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 479 PMU_BATSYSCTL_CURRENT | i, pmu_battquery_sysctl, 480 "I", "Battery discharge rate (mA)"); 481 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 482 "voltage", 483 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 484 PMU_BATSYSCTL_VOLTAGE | i, pmu_battquery_sysctl, 485 "I", "Battery voltage (mV)"); 486 487 /* Knobs for mental compatibility with ACPI */ 488 489 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 490 "time", 491 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 492 PMU_BATSYSCTL_TIME | i, pmu_battquery_sysctl, 493 "I", "Time Remaining (minutes)"); 494 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 495 "life", 496 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 497 PMU_BATSYSCTL_LIFE | i, pmu_battquery_sysctl, 498 "I", "Capacity remaining (percent)"); 499 } 500 } 501 502 /* 503 * Set up LED interface 504 */ 505 506 sc->sc_leddev = led_create(pmu_set_sleepled, sc, "sleepled"); 507 508 /* 509 * Register RTC 510 */ 511 512 clock_register(dev, 1000); 513 514 /* 515 * Register power control handler 516 */ 517 EVENTHANDLER_REGISTER(shutdown_final, pmu_shutdown, sc, 518 SHUTDOWN_PRI_LAST); 519 520 return (bus_generic_attach(dev)); 521 } 522 523 static int 524 pmu_detach(device_t dev) 525 { 526 struct pmu_softc *sc; 527 528 sc = device_get_softc(dev); 529 530 if (sc->sc_leddev != NULL) 531 led_destroy(sc->sc_leddev); 532 533 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih); 534 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, sc->sc_irq); 535 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid, sc->sc_memr); 536 mtx_destroy(&sc->sc_mutex); 537 538 return (bus_generic_detach(dev)); 539 } 540 541 static uint8_t 542 pmu_read_reg(struct pmu_softc *sc, u_int offset) 543 { 544 return (bus_read_1(sc->sc_memr, offset)); 545 } 546 547 static void 548 pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value) 549 { 550 bus_write_1(sc->sc_memr, offset, value); 551 } 552 553 static int 554 pmu_send_byte(struct pmu_softc *sc, uint8_t data) 555 { 556 557 pmu_out(sc); 558 pmu_write_reg(sc, vSR, data); 559 pmu_ack_off(sc); 560 /* wait for intr to come up */ 561 /* XXX should add a timeout and bail if it expires */ 562 do {} while (pmu_intr_state(sc) == 0); 563 pmu_ack_on(sc); 564 do {} while (pmu_intr_state(sc)); 565 pmu_ack_on(sc); 566 return 0; 567 } 568 569 static inline int 570 pmu_read_byte(struct pmu_softc *sc, uint8_t *data) 571 { 572 pmu_in(sc); 573 (void)pmu_read_reg(sc, vSR); 574 pmu_ack_off(sc); 575 /* wait for intr to come up */ 576 do {} while (pmu_intr_state(sc) == 0); 577 pmu_ack_on(sc); 578 do {} while (pmu_intr_state(sc)); 579 *data = pmu_read_reg(sc, vSR); 580 return 0; 581 } 582 583 static int 584 pmu_intr_state(struct pmu_softc *sc) 585 { 586 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0); 587 } 588 589 static int 590 pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen, 591 uint8_t *out_msg) 592 { 593 struct pmu_softc *sc = cookie; 594 int i, rcv_len = -1; 595 uint8_t out_len, intreg; 596 597 intreg = pmu_read_reg(sc, vIER); 598 intreg &= 0x10; 599 pmu_write_reg(sc, vIER, intreg); 600 601 /* wait idle */ 602 do {} while (pmu_intr_state(sc)); 603 604 /* send command */ 605 pmu_send_byte(sc, cmd); 606 607 /* send length if necessary */ 608 if (pm_send_cmd_type[cmd] < 0) { 609 pmu_send_byte(sc, length); 610 } 611 612 for (i = 0; i < length; i++) { 613 pmu_send_byte(sc, in_msg[i]); 614 } 615 616 /* see if there's data to read */ 617 rcv_len = pm_receive_cmd_type[cmd]; 618 if (rcv_len == 0) 619 goto done; 620 621 /* read command */ 622 if (rcv_len == 1) { 623 pmu_read_byte(sc, out_msg); 624 goto done; 625 } else 626 out_msg[0] = cmd; 627 if (rcv_len < 0) { 628 pmu_read_byte(sc, &out_len); 629 rcv_len = out_len + 1; 630 } 631 for (i = 1; i < min(rcv_len, rlen); i++) 632 pmu_read_byte(sc, &out_msg[i]); 633 634 done: 635 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90); 636 637 return rcv_len; 638 } 639 640 static u_int 641 pmu_poll(device_t dev) 642 { 643 pmu_intr(dev); 644 return (0); 645 } 646 647 static void 648 pmu_in(struct pmu_softc *sc) 649 { 650 uint8_t reg; 651 652 reg = pmu_read_reg(sc, vACR); 653 reg &= ~vSR_OUT; 654 reg |= 0x0c; 655 pmu_write_reg(sc, vACR, reg); 656 } 657 658 static void 659 pmu_out(struct pmu_softc *sc) 660 { 661 uint8_t reg; 662 663 reg = pmu_read_reg(sc, vACR); 664 reg |= vSR_OUT; 665 reg |= 0x0c; 666 pmu_write_reg(sc, vACR, reg); 667 } 668 669 static void 670 pmu_ack_off(struct pmu_softc *sc) 671 { 672 uint8_t reg; 673 674 reg = pmu_read_reg(sc, vBufB); 675 reg &= ~vPB4; 676 pmu_write_reg(sc, vBufB, reg); 677 } 678 679 static void 680 pmu_ack_on(struct pmu_softc *sc) 681 { 682 uint8_t reg; 683 684 reg = pmu_read_reg(sc, vBufB); 685 reg |= vPB4; 686 pmu_write_reg(sc, vBufB, reg); 687 } 688 689 static void 690 pmu_intr(void *arg) 691 { 692 device_t dev; 693 struct pmu_softc *sc; 694 695 unsigned int len; 696 uint8_t resp[16]; 697 uint8_t junk[16]; 698 699 dev = (device_t)arg; 700 sc = device_get_softc(dev); 701 702 mtx_lock(&sc->sc_mutex); 703 704 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */ 705 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp); 706 707 mtx_unlock(&sc->sc_mutex); 708 709 if ((len < 1) || (resp[1] == 0)) { 710 return; 711 } 712 713 if (resp[1] & PMU_INT_ADB) { 714 /* 715 * the PMU will turn off autopolling after each command that 716 * it did not issue, so we assume any but TALK R0 is ours and 717 * re-enable autopoll here whenever we receive an ACK for a 718 * non TR0 command. 719 */ 720 mtx_lock(&sc->sc_mutex); 721 722 if ((resp[2] & 0x0f) != (ADB_COMMAND_TALK << 2)) { 723 if (sc->sc_autopoll) { 724 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, 725 (sc->sc_autopoll >> 8) & 0xff, 726 sc->sc_autopoll & 0xff}; 727 728 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, junk); 729 } 730 } 731 732 mtx_unlock(&sc->sc_mutex); 733 734 adb_receive_raw_packet(sc->adb_bus,resp[1],resp[2], 735 len - 3,&resp[3]); 736 } 737 if (resp[1] & PMU_INT_ENVIRONMENT) { 738 /* if the lid was just closed, notify devd. */ 739 if ((resp[2] & PMU_ENV_LID_CLOSED) && (!sc->lid_closed)) { 740 sc->lid_closed = 1; 741 devctl_notify("PMU", "lid", "close", NULL); 742 } 743 else if (!(resp[2] & PMU_ENV_LID_CLOSED) && (sc->lid_closed)) { 744 /* if the lid was just opened, notify devd. */ 745 sc->lid_closed = 0; 746 devctl_notify("PMU", "lid", "open", NULL); 747 } 748 if (resp[2] & PMU_ENV_POWER) 749 devctl_notify("PMU", "Button", "pressed", NULL); 750 } 751 } 752 753 static u_int 754 pmu_adb_send(device_t dev, u_char command_byte, int len, u_char *data, 755 u_char poll) 756 { 757 struct pmu_softc *sc = device_get_softc(dev); 758 int i; 759 uint8_t packet[16], resp[16]; 760 761 /* construct an ADB command packet and send it */ 762 763 packet[0] = command_byte; 764 765 packet[1] = 0; 766 packet[2] = len; 767 for (i = 0; i < len; i++) 768 packet[i + 3] = data[i]; 769 770 mtx_lock(&sc->sc_mutex); 771 pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp); 772 mtx_unlock(&sc->sc_mutex); 773 774 if (poll) 775 pmu_poll(dev); 776 777 return 0; 778 } 779 780 static u_int 781 pmu_adb_autopoll(device_t dev, uint16_t mask) 782 { 783 struct pmu_softc *sc = device_get_softc(dev); 784 785 /* magical incantation to re-enable autopolling */ 786 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (mask >> 8) & 0xff, mask & 0xff}; 787 uint8_t resp[16]; 788 789 mtx_lock(&sc->sc_mutex); 790 791 if (sc->sc_autopoll == mask) { 792 mtx_unlock(&sc->sc_mutex); 793 return 0; 794 } 795 796 sc->sc_autopoll = mask & 0xffff; 797 798 if (mask) 799 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 800 else 801 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp); 802 803 mtx_unlock(&sc->sc_mutex); 804 805 return 0; 806 } 807 808 static void 809 pmu_shutdown(void *xsc, int howto) 810 { 811 struct pmu_softc *sc = xsc; 812 uint8_t cmd[] = {'M', 'A', 'T', 'T'}; 813 814 if ((howto & RB_POWEROFF) != 0) 815 pmu_send(sc, PMU_POWER_OFF, 4, cmd, 0, NULL); 816 else if ((howto & RB_HALT) == 0) 817 pmu_send(sc, PMU_RESET_CPU, 0, NULL, 0, NULL); 818 else 819 return; 820 821 for (;;); 822 } 823 824 static void 825 pmu_set_sleepled(void *xsc, int onoff) 826 { 827 struct pmu_softc *sc = xsc; 828 uint8_t cmd[] = {4, 0, 0}; 829 830 cmd[2] = onoff; 831 832 mtx_lock(&sc->sc_mutex); 833 pmu_send(sc, PMU_SET_SLEEPLED, 3, cmd, 0, NULL); 834 mtx_unlock(&sc->sc_mutex); 835 } 836 837 static int 838 pmu_server_mode(SYSCTL_HANDLER_ARGS) 839 { 840 struct pmu_softc *sc = arg1; 841 842 u_int server_mode = 0; 843 uint8_t getcmd[] = {PMU_PWR_GET_POWERUP_EVENTS}; 844 uint8_t setcmd[] = {0, 0, PMU_PWR_WAKEUP_AC_INSERT}; 845 uint8_t resp[3]; 846 int error, len; 847 848 mtx_lock(&sc->sc_mutex); 849 len = pmu_send(sc, PMU_POWER_EVENTS, 1, getcmd, 3, resp); 850 mtx_unlock(&sc->sc_mutex); 851 852 if (len == 3) 853 server_mode = (resp[2] & PMU_PWR_WAKEUP_AC_INSERT) ? 1 : 0; 854 855 error = sysctl_handle_int(oidp, &server_mode, 0, req); 856 857 if (len != 3) 858 return (EINVAL); 859 860 if (error || !req->newptr) 861 return (error); 862 863 if (server_mode == 1) 864 setcmd[0] = PMU_PWR_SET_POWERUP_EVENTS; 865 else if (server_mode == 0) 866 setcmd[0] = PMU_PWR_CLR_POWERUP_EVENTS; 867 else 868 return (EINVAL); 869 870 setcmd[1] = resp[1]; 871 872 mtx_lock(&sc->sc_mutex); 873 pmu_send(sc, PMU_POWER_EVENTS, 3, setcmd, 2, resp); 874 mtx_unlock(&sc->sc_mutex); 875 876 return (0); 877 } 878 879 static int 880 pmu_query_battery(struct pmu_softc *sc, int batt, struct pmu_battstate *info) 881 { 882 uint8_t reg; 883 uint8_t resp[16]; 884 int len; 885 886 reg = batt + 1; 887 888 mtx_lock(&sc->sc_mutex); 889 len = pmu_send(sc, PMU_SMART_BATTERY_STATE, 1, ®, 16, resp); 890 mtx_unlock(&sc->sc_mutex); 891 892 if (len < 3) 893 return (-1); 894 895 /* All PMU battery info replies share a common header: 896 * Byte 1 Payload Format 897 * Byte 2 Battery Flags 898 */ 899 900 info->state = resp[2]; 901 902 switch (resp[1]) { 903 case 3: 904 case 4: 905 /* 906 * Formats 3 and 4 appear to be the same: 907 * Byte 3 Charge 908 * Byte 4 Max Charge 909 * Byte 5 Current 910 * Byte 6 Voltage 911 */ 912 913 info->charge = resp[3]; 914 info->maxcharge = resp[4]; 915 /* Current can be positive or negative */ 916 info->current = (int8_t)resp[5]; 917 info->voltage = resp[6]; 918 break; 919 case 5: 920 /* 921 * Formats 5 is a wider version of formats 3 and 4 922 * Byte 3-4 Charge 923 * Byte 5-6 Max Charge 924 * Byte 7-8 Current 925 * Byte 9-10 Voltage 926 */ 927 928 info->charge = (resp[3] << 8) | resp[4]; 929 info->maxcharge = (resp[5] << 8) | resp[6]; 930 /* Current can be positive or negative */ 931 info->current = (int16_t)((resp[7] << 8) | resp[8]); 932 info->voltage = (resp[9] << 8) | resp[10]; 933 break; 934 default: 935 device_printf(sc->sc_dev, "Unknown battery info format (%d)!\n", 936 resp[1]); 937 return (-1); 938 } 939 940 return (0); 941 } 942 943 static void 944 pmu_battery_notify(struct pmu_battstate *batt, struct pmu_battstate *old) 945 { 946 char notify_buf[16]; 947 int new_acline, old_acline; 948 949 new_acline = (batt->state & PMU_PWR_AC_PRESENT) ? 1 : 0; 950 old_acline = (old->state & PMU_PWR_AC_PRESENT) ? 1 : 0; 951 952 if (new_acline != old_acline) { 953 snprintf(notify_buf, sizeof(notify_buf), 954 "notify=0x%02x", new_acline); 955 devctl_notify("PMU", "POWER", "ACLINE", notify_buf); 956 } 957 } 958 959 static void 960 pmu_battquery_proc(void) 961 { 962 struct pmu_softc *sc; 963 struct pmu_battstate batt; 964 struct pmu_battstate cur_batt; 965 int error; 966 967 sc = device_get_softc(pmu); 968 969 bzero(&cur_batt, sizeof(cur_batt)); 970 while (1) { 971 kproc_suspend_check(curproc); 972 error = pmu_query_battery(sc, 0, &batt); 973 if (error == 0) { 974 pmu_battery_notify(&batt, &cur_batt); 975 cur_batt = batt; 976 } 977 pause("pmu_batt", hz); 978 } 979 } 980 981 static int 982 pmu_battmon(SYSCTL_HANDLER_ARGS) 983 { 984 int error, result; 985 986 result = pmu_battmon_enabled; 987 988 error = sysctl_handle_int(oidp, &result, 0, req); 989 990 if (error || !req->newptr) 991 return (error); 992 993 if (!result && pmu_battmon_enabled) 994 error = kproc_suspend(pmubattproc, hz); 995 else if (result && pmu_battmon_enabled == 0) 996 error = kproc_resume(pmubattproc); 997 pmu_battmon_enabled = (result != 0); 998 999 return (error); 1000 } 1001 1002 static int 1003 pmu_acline_state(SYSCTL_HANDLER_ARGS) 1004 { 1005 struct pmu_softc *sc; 1006 struct pmu_battstate batt; 1007 int error, result; 1008 1009 sc = arg1; 1010 1011 /* The PMU treats the AC line status as a property of the battery */ 1012 error = pmu_query_battery(sc, 0, &batt); 1013 1014 if (error != 0) 1015 return (error); 1016 1017 result = (batt.state & PMU_PWR_AC_PRESENT) ? 1 : 0; 1018 error = sysctl_handle_int(oidp, &result, 0, req); 1019 1020 return (error); 1021 } 1022 1023 static int 1024 pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS) 1025 { 1026 struct pmu_softc *sc; 1027 struct pmu_battstate batt; 1028 int error, result; 1029 1030 sc = arg1; 1031 1032 error = pmu_query_battery(sc, arg2 & 0x00ff, &batt); 1033 1034 if (error != 0) 1035 return (error); 1036 1037 switch (arg2 & 0xff00) { 1038 case PMU_BATSYSCTL_PRESENT: 1039 result = (batt.state & PMU_PWR_BATT_PRESENT) ? 1 : 0; 1040 break; 1041 case PMU_BATSYSCTL_CHARGING: 1042 result = (batt.state & PMU_PWR_BATT_CHARGING) ? 1 : 0; 1043 break; 1044 case PMU_BATSYSCTL_CHARGE: 1045 result = batt.charge; 1046 break; 1047 case PMU_BATSYSCTL_MAXCHARGE: 1048 result = batt.maxcharge; 1049 break; 1050 case PMU_BATSYSCTL_CURRENT: 1051 result = batt.current; 1052 break; 1053 case PMU_BATSYSCTL_VOLTAGE: 1054 result = batt.voltage; 1055 break; 1056 case PMU_BATSYSCTL_TIME: 1057 /* Time remaining until full charge/discharge, in minutes */ 1058 1059 if (batt.current >= 0) 1060 result = (batt.maxcharge - batt.charge) /* mAh */ * 60 1061 / batt.current /* mA */; 1062 else 1063 result = (batt.charge /* mAh */ * 60) 1064 / (-batt.current /* mA */); 1065 break; 1066 case PMU_BATSYSCTL_LIFE: 1067 /* Battery charge fraction, in percent */ 1068 result = (batt.charge * 100) / batt.maxcharge; 1069 break; 1070 default: 1071 /* This should never happen */ 1072 result = -1; 1073 } 1074 1075 error = sysctl_handle_int(oidp, &result, 0, req); 1076 1077 return (error); 1078 } 1079 1080 #define DIFF19041970 2082844800 1081 1082 static int 1083 pmu_gettime(device_t dev, struct timespec *ts) 1084 { 1085 struct pmu_softc *sc = device_get_softc(dev); 1086 uint8_t resp[16]; 1087 uint32_t sec; 1088 1089 mtx_lock(&sc->sc_mutex); 1090 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp); 1091 mtx_unlock(&sc->sc_mutex); 1092 1093 memcpy(&sec, &resp[1], 4); 1094 ts->tv_sec = sec - DIFF19041970; 1095 ts->tv_nsec = 0; 1096 1097 return (0); 1098 } 1099 1100 static int 1101 pmu_settime(device_t dev, struct timespec *ts) 1102 { 1103 struct pmu_softc *sc = device_get_softc(dev); 1104 uint32_t sec; 1105 1106 sec = ts->tv_sec + DIFF19041970; 1107 1108 mtx_lock(&sc->sc_mutex); 1109 pmu_send(sc, PMU_SET_RTC, sizeof(sec), (uint8_t *)&sec, 0, NULL); 1110 mtx_unlock(&sc->sc_mutex); 1111 1112 return (0); 1113 } 1114 1115 int 1116 pmu_set_speed(int low_speed) 1117 { 1118 struct pmu_softc *sc; 1119 uint8_t sleepcmd[] = {'W', 'O', 'O', 'F', 0}; 1120 uint8_t resp[16]; 1121 1122 sc = device_get_softc(pmu); 1123 pmu_write_reg(sc, vIER, 0x10); 1124 spinlock_enter(); 1125 mtdec(0x7fffffff); 1126 mb(); 1127 mtdec(0x7fffffff); 1128 1129 sleepcmd[4] = low_speed; 1130 pmu_send(sc, PMU_CPU_SPEED, 5, sleepcmd, 16, resp); 1131 unin_chip_sleep(NULL, 1); 1132 platform_sleep(); 1133 unin_chip_wake(NULL); 1134 1135 mtdec(1); /* Force a decrementer exception */ 1136 spinlock_exit(); 1137 pmu_write_reg(sc, vIER, 0x90); 1138 1139 return (0); 1140 } 1141