pmu.c revision 262675
1/*- 2 * Copyright (c) 2006 Michael Lorenz 3 * Copyright 2008 by Nathan Whitehorn 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 ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 23 * 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 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: stable/10/sys/powerpc/powermac/pmu.c 262675 2014-03-02 02:35:46Z jhibbits $"); 31 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/module.h> 35#include <sys/bus.h> 36#include <sys/conf.h> 37#include <sys/kernel.h> 38#include <sys/clock.h> 39#include <sys/proc.h> 40#include <sys/reboot.h> 41#include <sys/sysctl.h> 42 43#include <dev/ofw/ofw_bus.h> 44#include <dev/ofw/openfirm.h> 45#include <dev/led/led.h> 46 47#include <machine/_inttypes.h> 48#include <machine/bus.h> 49#include <machine/cpu.h> 50#include <machine/hid.h> 51#include <machine/intr_machdep.h> 52#include <machine/md_var.h> 53#include <machine/pcb.h> 54#include <machine/pio.h> 55#include <machine/resource.h> 56 57#include <vm/vm.h> 58#include <vm/pmap.h> 59 60#include <sys/rman.h> 61 62#include <dev/adb/adb.h> 63 64#include "clock_if.h" 65#include "pmuvar.h" 66#include "viareg.h" 67#include "uninorthvar.h" /* For unin_chip_sleep()/unin_chip_wake() */ 68 69#define PMU_DEFAULTS PMU_INT_TICK | PMU_INT_ADB | \ 70 PMU_INT_PCEJECT | PMU_INT_SNDBRT | \ 71 PMU_INT_BATTERY | PMU_INT_ENVIRONMENT 72 73/* 74 * Bus interface 75 */ 76static int pmu_probe(device_t); 77static int pmu_attach(device_t); 78static int pmu_detach(device_t); 79 80/* 81 * Clock interface 82 */ 83static int pmu_gettime(device_t dev, struct timespec *ts); 84static int pmu_settime(device_t dev, struct timespec *ts); 85 86/* 87 * ADB Interface 88 */ 89 90static u_int pmu_adb_send(device_t dev, u_char command_byte, int len, 91 u_char *data, u_char poll); 92static u_int pmu_adb_autopoll(device_t dev, uint16_t mask); 93static u_int pmu_poll(device_t dev); 94 95/* 96 * Power interface 97 */ 98 99static void pmu_shutdown(void *xsc, int howto); 100static void pmu_set_sleepled(void *xsc, int onoff); 101static int pmu_server_mode(SYSCTL_HANDLER_ARGS); 102static int pmu_acline_state(SYSCTL_HANDLER_ARGS); 103static int pmu_query_battery(struct pmu_softc *sc, int batt, 104 struct pmu_battstate *info); 105static int pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS); 106 107/* 108 * List of battery-related sysctls we might ask for 109 */ 110 111enum { 112 PMU_BATSYSCTL_PRESENT = 1 << 8, 113 PMU_BATSYSCTL_CHARGING = 2 << 8, 114 PMU_BATSYSCTL_CHARGE = 3 << 8, 115 PMU_BATSYSCTL_MAXCHARGE = 4 << 8, 116 PMU_BATSYSCTL_CURRENT = 5 << 8, 117 PMU_BATSYSCTL_VOLTAGE = 6 << 8, 118 PMU_BATSYSCTL_TIME = 7 << 8, 119 PMU_BATSYSCTL_LIFE = 8 << 8 120}; 121 122static device_method_t pmu_methods[] = { 123 /* Device interface */ 124 DEVMETHOD(device_probe, pmu_probe), 125 DEVMETHOD(device_attach, pmu_attach), 126 DEVMETHOD(device_detach, pmu_detach), 127 DEVMETHOD(device_shutdown, bus_generic_shutdown), 128 129 /* ADB bus interface */ 130 DEVMETHOD(adb_hb_send_raw_packet, pmu_adb_send), 131 DEVMETHOD(adb_hb_controller_poll, pmu_poll), 132 DEVMETHOD(adb_hb_set_autopoll_mask, pmu_adb_autopoll), 133 134 /* Clock interface */ 135 DEVMETHOD(clock_gettime, pmu_gettime), 136 DEVMETHOD(clock_settime, pmu_settime), 137 138 DEVMETHOD_END 139}; 140 141static driver_t pmu_driver = { 142 "pmu", 143 pmu_methods, 144 sizeof(struct pmu_softc), 145}; 146 147static devclass_t pmu_devclass; 148 149DRIVER_MODULE(pmu, macio, pmu_driver, pmu_devclass, 0, 0); 150DRIVER_MODULE(adb, pmu, adb_driver, adb_devclass, 0, 0); 151 152static int pmuextint_probe(device_t); 153static int pmuextint_attach(device_t); 154 155static device_method_t pmuextint_methods[] = { 156 /* Device interface */ 157 DEVMETHOD(device_probe, pmuextint_probe), 158 DEVMETHOD(device_attach, pmuextint_attach), 159 160 {0,0} 161}; 162 163static driver_t pmuextint_driver = { 164 "pmuextint", 165 pmuextint_methods, 166 0 167}; 168 169static devclass_t pmuextint_devclass; 170 171DRIVER_MODULE(pmuextint, macgpio, pmuextint_driver, pmuextint_devclass, 0, 0); 172 173/* Make sure uhid is loaded, as it turns off some of the ADB emulation */ 174MODULE_DEPEND(pmu, usb, 1, 1, 1); 175 176static void pmu_intr(void *arg); 177static void pmu_in(struct pmu_softc *sc); 178static void pmu_out(struct pmu_softc *sc); 179static void pmu_ack_on(struct pmu_softc *sc); 180static void pmu_ack_off(struct pmu_softc *sc); 181static int pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, 182 int rlen, uint8_t *out_msg); 183static uint8_t pmu_read_reg(struct pmu_softc *sc, u_int offset); 184static void pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value); 185static int pmu_intr_state(struct pmu_softc *); 186 187/* these values shows that number of data returned after 'send' cmd is sent */ 188static signed char pm_send_cmd_type[] = { 189 -1, -1, -1, -1, -1, -1, -1, -1, 190 -1, -1, -1, -1, -1, -1, -1, -1, 191 0x01, 0x01, -1, -1, -1, -1, -1, -1, 192 0x00, 0x00, -1, -1, -1, -1, -1, 0x00, 193 -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1, 194 0x00, -1, -1, -1, -1, -1, -1, -1, 195 0x04, 0x14, -1, 0x03, -1, -1, -1, -1, 196 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, 197 0x01, 0x01, -1, -1, -1, -1, -1, -1, 198 0x00, 0x00, -1, -1, 0x01, -1, -1, -1, 199 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01, 200 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1, 201 0x02, -1, -1, -1, -1, -1, -1, -1, 202 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, 203 0x01, 0x01, 0x01, -1, -1, -1, -1, -1, 204 0x00, 0x00, -1, -1, -1, 0x05, 0x04, 0x04, 205 0x04, -1, 0x00, -1, -1, -1, -1, -1, 206 0x00, -1, -1, -1, -1, -1, -1, -1, 207 0x01, 0x02, -1, -1, -1, -1, -1, -1, 208 0x00, 0x00, -1, -1, -1, -1, -1, -1, 209 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1, 210 0x01, 0x01, 0x03, 0x02, -1, -1, -1, -1, 211 -1, -1, -1, -1, -1, -1, -1, -1, 212 -1, -1, -1, -1, -1, -1, -1, -1, 213 -1, -1, -1, -1, -1, -1, -1, -1, 214 -1, -1, -1, -1, -1, -1, -1, -1, 215 0x00, -1, -1, -1, -1, -1, -1, -1, 216 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1, 217 -1, 0x04, 0x00, -1, -1, -1, -1, -1, 218 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00, 219 -1, -1, -1, -1, -1, -1, -1, -1, 220 -1, -1, -1, -1, -1, -1, -1, -1 221}; 222 223/* these values shows that number of data returned after 'receive' cmd is sent */ 224static signed char pm_receive_cmd_type[] = { 225 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 226 -1, -1, -1, -1, -1, -1, -1, -1, 227 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 228 0x02, 0x02, -1, -1, -1, -1, -1, 0x00, 229 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 230 -1, -1, -1, -1, -1, -1, -1, -1, 231 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 232 0x05, 0x15, -1, 0x02, -1, -1, -1, -1, 233 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 234 0x02, 0x02, -1, -1, -1, -1, -1, -1, 235 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 236 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1, 237 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 238 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1, 239 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 240 -1, -1, -1, -1, -1, 0x01, 0x01, 0x01, 241 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 242 0x06, -1, -1, -1, -1, -1, -1, -1, 243 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 244 0x02, 0x02, -1, -1, -1, -1, -1, -1, 245 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 246 0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1, 247 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 248 -1, -1, -1, -1, -1, -1, -1, -1, 249 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 250 -1, -1, -1, -1, -1, -1, -1, -1, 251 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 252 0x02, 0x02, -1, -1, 0x02, -1, -1, -1, 253 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 254 -1, -1, 0x02, -1, -1, -1, -1, 0x00, 255 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 256 -1, -1, -1, -1, -1, -1, -1, -1, 257}; 258 259/* We only have one of each device, so globals are safe */ 260static device_t pmu = NULL; 261static device_t pmu_extint = NULL; 262 263static int 264pmuextint_probe(device_t dev) 265{ 266 const char *type = ofw_bus_get_type(dev); 267 268 if (strcmp(type, "extint-gpio1") != 0) 269 return (ENXIO); 270 271 device_set_desc(dev, "Apple PMU99 External Interrupt"); 272 return (0); 273} 274 275static int 276pmu_probe(device_t dev) 277{ 278 const char *type = ofw_bus_get_type(dev); 279 280 if (strcmp(type, "via-pmu") != 0) 281 return (ENXIO); 282 283 device_set_desc(dev, "Apple PMU99 Controller"); 284 return (0); 285} 286 287 288static int 289setup_pmu_intr(device_t dev, device_t extint) 290{ 291 struct pmu_softc *sc; 292 sc = device_get_softc(dev); 293 294 sc->sc_irqrid = 0; 295 sc->sc_irq = bus_alloc_resource_any(extint, SYS_RES_IRQ, &sc->sc_irqrid, 296 RF_ACTIVE); 297 if (sc->sc_irq == NULL) { 298 device_printf(dev, "could not allocate interrupt\n"); 299 return (ENXIO); 300 } 301 302 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC | INTR_MPSAFE 303 | INTR_ENTROPY, NULL, pmu_intr, dev, &sc->sc_ih) != 0) { 304 device_printf(dev, "could not setup interrupt\n"); 305 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, 306 sc->sc_irq); 307 return (ENXIO); 308 } 309 310 return (0); 311} 312 313static int 314pmuextint_attach(device_t dev) 315{ 316 pmu_extint = dev; 317 if (pmu) 318 return (setup_pmu_intr(pmu,dev)); 319 320 return (0); 321} 322 323static int 324pmu_attach(device_t dev) 325{ 326 struct pmu_softc *sc; 327 328 int i; 329 uint8_t reg; 330 uint8_t cmd[2] = {2, 0}; 331 uint8_t resp[16]; 332 phandle_t node,child; 333 struct sysctl_ctx_list *ctx; 334 struct sysctl_oid *tree; 335 336 sc = device_get_softc(dev); 337 sc->sc_dev = dev; 338 339 sc->sc_memrid = 0; 340 sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 341 &sc->sc_memrid, RF_ACTIVE); 342 343 mtx_init(&sc->sc_mutex,"pmu",NULL,MTX_DEF | MTX_RECURSE); 344 345 if (sc->sc_memr == NULL) { 346 device_printf(dev, "Could not alloc mem resource!\n"); 347 return (ENXIO); 348 } 349 350 /* 351 * Our interrupt is attached to a GPIO pin. Depending on probe order, 352 * we may not have found it yet. If we haven't, it will find us, and 353 * attach our interrupt then. 354 */ 355 pmu = dev; 356 if (pmu_extint != NULL) { 357 if (setup_pmu_intr(dev,pmu_extint) != 0) 358 return (ENXIO); 359 } 360 361 sc->sc_autopoll = 0; 362 sc->sc_batteries = 0; 363 sc->adb_bus = NULL; 364 sc->sc_leddev = NULL; 365 366 /* Init PMU */ 367 368 pmu_write_reg(sc, vBufB, pmu_read_reg(sc, vBufB) | vPB4); 369 pmu_write_reg(sc, vDirB, (pmu_read_reg(sc, vDirB) | vPB4) & ~vPB3); 370 371 reg = PMU_DEFAULTS; 372 pmu_send(sc, PMU_SET_IMASK, 1, ®, 16, resp); 373 374 pmu_write_reg(sc, vIER, 0x94); /* make sure VIA interrupts are on */ 375 376 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp); 377 pmu_send(sc, PMU_GET_VERSION, 0, cmd, 16, resp); 378 379 /* Initialize child buses (ADB) */ 380 node = ofw_bus_get_node(dev); 381 382 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 383 char name[32]; 384 385 memset(name, 0, sizeof(name)); 386 OF_getprop(child, "name", name, sizeof(name)); 387 388 if (bootverbose) 389 device_printf(dev, "PMU child <%s>\n",name); 390 391 if (strncmp(name, "adb", 4) == 0) { 392 sc->adb_bus = device_add_child(dev,"adb",-1); 393 } 394 395 if (strncmp(name, "power-mgt", 9) == 0) { 396 uint32_t prim_info[9]; 397 398 if (OF_getprop(child, "prim-info", prim_info, 399 sizeof(prim_info)) >= 7) 400 sc->sc_batteries = (prim_info[6] >> 16) & 0xff; 401 402 if (bootverbose && sc->sc_batteries > 0) 403 device_printf(dev, "%d batteries detected\n", 404 sc->sc_batteries); 405 } 406 } 407 408 /* 409 * Set up sysctls 410 */ 411 412 ctx = device_get_sysctl_ctx(dev); 413 tree = device_get_sysctl_tree(dev); 414 415 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 416 "server_mode", CTLTYPE_INT | CTLFLAG_RW, sc, 0, 417 pmu_server_mode, "I", "Enable reboot after power failure"); 418 419 if (sc->sc_batteries > 0) { 420 struct sysctl_oid *oid, *battroot; 421 char battnum[2]; 422 423 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 424 "acline", CTLTYPE_INT | CTLFLAG_RD, sc, 0, 425 pmu_acline_state, "I", "AC Line Status"); 426 427 battroot = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 428 "batteries", CTLFLAG_RD, 0, "Battery Information"); 429 430 for (i = 0; i < sc->sc_batteries; i++) { 431 battnum[0] = i + '0'; 432 battnum[1] = '\0'; 433 434 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(battroot), 435 OID_AUTO, battnum, CTLFLAG_RD, 0, 436 "Battery Information"); 437 438 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 439 "present", CTLTYPE_INT | CTLFLAG_RD, sc, 440 PMU_BATSYSCTL_PRESENT | i, pmu_battquery_sysctl, 441 "I", "Battery present"); 442 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 443 "charging", CTLTYPE_INT | CTLFLAG_RD, sc, 444 PMU_BATSYSCTL_CHARGING | i, pmu_battquery_sysctl, 445 "I", "Battery charging"); 446 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 447 "charge", CTLTYPE_INT | CTLFLAG_RD, sc, 448 PMU_BATSYSCTL_CHARGE | i, pmu_battquery_sysctl, 449 "I", "Battery charge (mAh)"); 450 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 451 "maxcharge", CTLTYPE_INT | CTLFLAG_RD, sc, 452 PMU_BATSYSCTL_MAXCHARGE | i, pmu_battquery_sysctl, 453 "I", "Maximum battery capacity (mAh)"); 454 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 455 "rate", CTLTYPE_INT | CTLFLAG_RD, sc, 456 PMU_BATSYSCTL_CURRENT | i, pmu_battquery_sysctl, 457 "I", "Battery discharge rate (mA)"); 458 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 459 "voltage", CTLTYPE_INT | CTLFLAG_RD, sc, 460 PMU_BATSYSCTL_VOLTAGE | i, pmu_battquery_sysctl, 461 "I", "Battery voltage (mV)"); 462 463 /* Knobs for mental compatibility with ACPI */ 464 465 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 466 "time", CTLTYPE_INT | CTLFLAG_RD, sc, 467 PMU_BATSYSCTL_TIME | i, pmu_battquery_sysctl, 468 "I", "Time Remaining (minutes)"); 469 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 470 "life", CTLTYPE_INT | CTLFLAG_RD, sc, 471 PMU_BATSYSCTL_LIFE | i, pmu_battquery_sysctl, 472 "I", "Capacity remaining (percent)"); 473 } 474 } 475 476 /* 477 * Set up LED interface 478 */ 479 480 sc->sc_leddev = led_create(pmu_set_sleepled, sc, "sleepled"); 481 482 /* 483 * Register RTC 484 */ 485 486 clock_register(dev, 1000); 487 488 /* 489 * Register power control handler 490 */ 491 EVENTHANDLER_REGISTER(shutdown_final, pmu_shutdown, sc, 492 SHUTDOWN_PRI_LAST); 493 494 return (bus_generic_attach(dev)); 495} 496 497static int 498pmu_detach(device_t dev) 499{ 500 struct pmu_softc *sc; 501 502 sc = device_get_softc(dev); 503 504 if (sc->sc_leddev != NULL) 505 led_destroy(sc->sc_leddev); 506 507 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih); 508 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, sc->sc_irq); 509 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid, sc->sc_memr); 510 mtx_destroy(&sc->sc_mutex); 511 512 return (bus_generic_detach(dev)); 513} 514 515static uint8_t 516pmu_read_reg(struct pmu_softc *sc, u_int offset) 517{ 518 return (bus_read_1(sc->sc_memr, offset)); 519} 520 521static void 522pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value) 523{ 524 bus_write_1(sc->sc_memr, offset, value); 525} 526 527static int 528pmu_send_byte(struct pmu_softc *sc, uint8_t data) 529{ 530 531 pmu_out(sc); 532 pmu_write_reg(sc, vSR, data); 533 pmu_ack_off(sc); 534 /* wait for intr to come up */ 535 /* XXX should add a timeout and bail if it expires */ 536 do {} while (pmu_intr_state(sc) == 0); 537 pmu_ack_on(sc); 538 do {} while (pmu_intr_state(sc)); 539 pmu_ack_on(sc); 540 return 0; 541} 542 543static inline int 544pmu_read_byte(struct pmu_softc *sc, uint8_t *data) 545{ 546 volatile uint8_t scratch; 547 pmu_in(sc); 548 scratch = pmu_read_reg(sc, vSR); 549 pmu_ack_off(sc); 550 /* wait for intr to come up */ 551 do {} while (pmu_intr_state(sc) == 0); 552 pmu_ack_on(sc); 553 do {} while (pmu_intr_state(sc)); 554 *data = pmu_read_reg(sc, vSR); 555 return 0; 556} 557 558static int 559pmu_intr_state(struct pmu_softc *sc) 560{ 561 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0); 562} 563 564static int 565pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen, 566 uint8_t *out_msg) 567{ 568 struct pmu_softc *sc = cookie; 569 int i, rcv_len = -1; 570 uint8_t out_len, intreg; 571 572 intreg = pmu_read_reg(sc, vIER); 573 intreg &= 0x10; 574 pmu_write_reg(sc, vIER, intreg); 575 576 /* wait idle */ 577 do {} while (pmu_intr_state(sc)); 578 579 /* send command */ 580 pmu_send_byte(sc, cmd); 581 582 /* send length if necessary */ 583 if (pm_send_cmd_type[cmd] < 0) { 584 pmu_send_byte(sc, length); 585 } 586 587 for (i = 0; i < length; i++) { 588 pmu_send_byte(sc, in_msg[i]); 589 } 590 591 /* see if there's data to read */ 592 rcv_len = pm_receive_cmd_type[cmd]; 593 if (rcv_len == 0) 594 goto done; 595 596 /* read command */ 597 if (rcv_len == 1) { 598 pmu_read_byte(sc, out_msg); 599 goto done; 600 } else 601 out_msg[0] = cmd; 602 if (rcv_len < 0) { 603 pmu_read_byte(sc, &out_len); 604 rcv_len = out_len + 1; 605 } 606 for (i = 1; i < min(rcv_len, rlen); i++) 607 pmu_read_byte(sc, &out_msg[i]); 608 609done: 610 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90); 611 612 return rcv_len; 613} 614 615 616static u_int 617pmu_poll(device_t dev) 618{ 619 pmu_intr(dev); 620 return (0); 621} 622 623static void 624pmu_in(struct pmu_softc *sc) 625{ 626 uint8_t reg; 627 628 reg = pmu_read_reg(sc, vACR); 629 reg &= ~vSR_OUT; 630 reg |= 0x0c; 631 pmu_write_reg(sc, vACR, reg); 632} 633 634static void 635pmu_out(struct pmu_softc *sc) 636{ 637 uint8_t reg; 638 639 reg = pmu_read_reg(sc, vACR); 640 reg |= vSR_OUT; 641 reg |= 0x0c; 642 pmu_write_reg(sc, vACR, reg); 643} 644 645static void 646pmu_ack_off(struct pmu_softc *sc) 647{ 648 uint8_t reg; 649 650 reg = pmu_read_reg(sc, vBufB); 651 reg &= ~vPB4; 652 pmu_write_reg(sc, vBufB, reg); 653} 654 655static void 656pmu_ack_on(struct pmu_softc *sc) 657{ 658 uint8_t reg; 659 660 reg = pmu_read_reg(sc, vBufB); 661 reg |= vPB4; 662 pmu_write_reg(sc, vBufB, reg); 663} 664 665static void 666pmu_intr(void *arg) 667{ 668 device_t dev; 669 struct pmu_softc *sc; 670 671 unsigned int len; 672 uint8_t resp[16]; 673 uint8_t junk[16]; 674 675 dev = (device_t)arg; 676 sc = device_get_softc(dev); 677 678 mtx_lock(&sc->sc_mutex); 679 680 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */ 681 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp); 682 683 mtx_unlock(&sc->sc_mutex); 684 685 if ((len < 1) || (resp[1] == 0)) { 686 return; 687 } 688 689 if (resp[1] & PMU_INT_ADB) { 690 /* 691 * the PMU will turn off autopolling after each command that 692 * it did not issue, so we assume any but TALK R0 is ours and 693 * re-enable autopoll here whenever we receive an ACK for a 694 * non TR0 command. 695 */ 696 mtx_lock(&sc->sc_mutex); 697 698 if ((resp[2] & 0x0f) != (ADB_COMMAND_TALK << 2)) { 699 if (sc->sc_autopoll) { 700 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, 701 (sc->sc_autopoll >> 8) & 0xff, 702 sc->sc_autopoll & 0xff}; 703 704 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, junk); 705 } 706 } 707 708 mtx_unlock(&sc->sc_mutex); 709 710 adb_receive_raw_packet(sc->adb_bus,resp[1],resp[2], 711 len - 3,&resp[3]); 712 } 713 if (resp[1] & PMU_INT_ENVIRONMENT) { 714 /* if the lid was just closed, notify devd. */ 715 if ((resp[2] & PMU_ENV_LID_CLOSED) && (!sc->lid_closed)) { 716 sc->lid_closed = 1; 717 if (devctl_process_running()) 718 devctl_notify("PMU", "lid", "close", NULL); 719 } 720 else if (!(resp[2] & PMU_ENV_LID_CLOSED) && (sc->lid_closed)) { 721 /* if the lid was just opened, notify devd. */ 722 if (devctl_process_running()) 723 devctl_notify("PMU", "lid", "open", NULL); 724 sc->lid_closed = 0; 725 } 726 } 727} 728 729static u_int 730pmu_adb_send(device_t dev, u_char command_byte, int len, u_char *data, 731 u_char poll) 732{ 733 struct pmu_softc *sc = device_get_softc(dev); 734 int i,replen; 735 uint8_t packet[16], resp[16]; 736 737 /* construct an ADB command packet and send it */ 738 739 packet[0] = command_byte; 740 741 packet[1] = 0; 742 packet[2] = len; 743 for (i = 0; i < len; i++) 744 packet[i + 3] = data[i]; 745 746 mtx_lock(&sc->sc_mutex); 747 replen = pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp); 748 mtx_unlock(&sc->sc_mutex); 749 750 if (poll) 751 pmu_poll(dev); 752 753 return 0; 754} 755 756static u_int 757pmu_adb_autopoll(device_t dev, uint16_t mask) 758{ 759 struct pmu_softc *sc = device_get_softc(dev); 760 761 /* magical incantation to re-enable autopolling */ 762 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (mask >> 8) & 0xff, mask & 0xff}; 763 uint8_t resp[16]; 764 765 mtx_lock(&sc->sc_mutex); 766 767 if (sc->sc_autopoll == mask) { 768 mtx_unlock(&sc->sc_mutex); 769 return 0; 770 } 771 772 sc->sc_autopoll = mask & 0xffff; 773 774 if (mask) 775 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 776 else 777 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp); 778 779 mtx_unlock(&sc->sc_mutex); 780 781 return 0; 782} 783 784static void 785pmu_shutdown(void *xsc, int howto) 786{ 787 struct pmu_softc *sc = xsc; 788 uint8_t cmd[] = {'M', 'A', 'T', 'T'}; 789 790 if (howto & RB_HALT) 791 pmu_send(sc, PMU_POWER_OFF, 4, cmd, 0, NULL); 792 else 793 pmu_send(sc, PMU_RESET_CPU, 0, NULL, 0, NULL); 794 795 for (;;); 796} 797 798static void 799pmu_set_sleepled(void *xsc, int onoff) 800{ 801 struct pmu_softc *sc = xsc; 802 uint8_t cmd[] = {4, 0, 0}; 803 804 cmd[2] = onoff; 805 806 mtx_lock(&sc->sc_mutex); 807 pmu_send(sc, PMU_SET_SLEEPLED, 3, cmd, 0, NULL); 808 mtx_unlock(&sc->sc_mutex); 809} 810 811static int 812pmu_server_mode(SYSCTL_HANDLER_ARGS) 813{ 814 struct pmu_softc *sc = arg1; 815 816 u_int server_mode = 0; 817 uint8_t getcmd[] = {PMU_PWR_GET_POWERUP_EVENTS}; 818 uint8_t setcmd[] = {0, 0, PMU_PWR_WAKEUP_AC_INSERT}; 819 uint8_t resp[3]; 820 int error, len; 821 822 mtx_lock(&sc->sc_mutex); 823 len = pmu_send(sc, PMU_POWER_EVENTS, 1, getcmd, 3, resp); 824 mtx_unlock(&sc->sc_mutex); 825 826 if (len == 3) 827 server_mode = (resp[2] & PMU_PWR_WAKEUP_AC_INSERT) ? 1 : 0; 828 829 error = sysctl_handle_int(oidp, &server_mode, 0, req); 830 831 if (len != 3) 832 return (EINVAL); 833 834 if (error || !req->newptr) 835 return (error); 836 837 if (server_mode == 1) 838 setcmd[0] = PMU_PWR_SET_POWERUP_EVENTS; 839 else if (server_mode == 0) 840 setcmd[0] = PMU_PWR_CLR_POWERUP_EVENTS; 841 else 842 return (EINVAL); 843 844 setcmd[1] = resp[1]; 845 846 mtx_lock(&sc->sc_mutex); 847 pmu_send(sc, PMU_POWER_EVENTS, 3, setcmd, 2, resp); 848 mtx_unlock(&sc->sc_mutex); 849 850 return (0); 851} 852 853static int 854pmu_query_battery(struct pmu_softc *sc, int batt, struct pmu_battstate *info) 855{ 856 uint8_t reg; 857 uint8_t resp[16]; 858 int len; 859 860 reg = batt + 1; 861 862 mtx_lock(&sc->sc_mutex); 863 len = pmu_send(sc, PMU_SMART_BATTERY_STATE, 1, ®, 16, resp); 864 mtx_unlock(&sc->sc_mutex); 865 866 if (len < 3) 867 return (-1); 868 869 /* All PMU battery info replies share a common header: 870 * Byte 1 Payload Format 871 * Byte 2 Battery Flags 872 */ 873 874 info->state = resp[2]; 875 876 switch (resp[1]) { 877 case 3: 878 case 4: 879 /* 880 * Formats 3 and 4 appear to be the same: 881 * Byte 3 Charge 882 * Byte 4 Max Charge 883 * Byte 5 Current 884 * Byte 6 Voltage 885 */ 886 887 info->charge = resp[3]; 888 info->maxcharge = resp[4]; 889 /* Current can be positive or negative */ 890 info->current = (int8_t)resp[5]; 891 info->voltage = resp[6]; 892 break; 893 case 5: 894 /* 895 * Formats 5 is a wider version of formats 3 and 4 896 * Byte 3-4 Charge 897 * Byte 5-6 Max Charge 898 * Byte 7-8 Current 899 * Byte 9-10 Voltage 900 */ 901 902 info->charge = (resp[3] << 8) | resp[4]; 903 info->maxcharge = (resp[5] << 8) | resp[6]; 904 /* Current can be positive or negative */ 905 info->current = (int16_t)((resp[7] << 8) | resp[8]); 906 info->voltage = (resp[9] << 8) | resp[10]; 907 break; 908 default: 909 device_printf(sc->sc_dev, "Unknown battery info format (%d)!\n", 910 resp[1]); 911 return (-1); 912 } 913 914 return (0); 915} 916 917static int 918pmu_acline_state(SYSCTL_HANDLER_ARGS) 919{ 920 struct pmu_softc *sc; 921 struct pmu_battstate batt; 922 int error, result; 923 924 sc = arg1; 925 926 /* The PMU treats the AC line status as a property of the battery */ 927 error = pmu_query_battery(sc, 0, &batt); 928 929 if (error != 0) 930 return (error); 931 932 result = (batt.state & PMU_PWR_AC_PRESENT) ? 1 : 0; 933 error = sysctl_handle_int(oidp, &result, 0, req); 934 935 return (error); 936} 937 938static int 939pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS) 940{ 941 struct pmu_softc *sc; 942 struct pmu_battstate batt; 943 int error, result; 944 945 sc = arg1; 946 947 error = pmu_query_battery(sc, arg2 & 0x00ff, &batt); 948 949 if (error != 0) 950 return (error); 951 952 switch (arg2 & 0xff00) { 953 case PMU_BATSYSCTL_PRESENT: 954 result = (batt.state & PMU_PWR_BATT_PRESENT) ? 1 : 0; 955 break; 956 case PMU_BATSYSCTL_CHARGING: 957 result = (batt.state & PMU_PWR_BATT_CHARGING) ? 1 : 0; 958 break; 959 case PMU_BATSYSCTL_CHARGE: 960 result = batt.charge; 961 break; 962 case PMU_BATSYSCTL_MAXCHARGE: 963 result = batt.maxcharge; 964 break; 965 case PMU_BATSYSCTL_CURRENT: 966 result = batt.current; 967 break; 968 case PMU_BATSYSCTL_VOLTAGE: 969 result = batt.voltage; 970 break; 971 case PMU_BATSYSCTL_TIME: 972 /* Time remaining until full charge/discharge, in minutes */ 973 974 if (batt.current >= 0) 975 result = (batt.maxcharge - batt.charge) /* mAh */ * 60 976 / batt.current /* mA */; 977 else 978 result = (batt.charge /* mAh */ * 60) 979 / (-batt.current /* mA */); 980 break; 981 case PMU_BATSYSCTL_LIFE: 982 /* Battery charge fraction, in percent */ 983 result = (batt.charge * 100) / batt.maxcharge; 984 break; 985 default: 986 /* This should never happen */ 987 result = -1; 988 }; 989 990 error = sysctl_handle_int(oidp, &result, 0, req); 991 992 return (error); 993} 994 995#define DIFF19041970 2082844800 996 997static int 998pmu_gettime(device_t dev, struct timespec *ts) 999{ 1000 struct pmu_softc *sc = device_get_softc(dev); 1001 uint8_t resp[16]; 1002 uint32_t sec; 1003 1004 mtx_lock(&sc->sc_mutex); 1005 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp); 1006 mtx_unlock(&sc->sc_mutex); 1007 1008 memcpy(&sec, &resp[1], 4); 1009 ts->tv_sec = sec - DIFF19041970; 1010 ts->tv_nsec = 0; 1011 1012 return (0); 1013} 1014 1015static int 1016pmu_settime(device_t dev, struct timespec *ts) 1017{ 1018 struct pmu_softc *sc = device_get_softc(dev); 1019 uint32_t sec; 1020 1021 sec = ts->tv_sec + DIFF19041970; 1022 1023 mtx_lock(&sc->sc_mutex); 1024 pmu_send(sc, PMU_SET_RTC, sizeof(sec), (uint8_t *)&sec, 0, NULL); 1025 mtx_unlock(&sc->sc_mutex); 1026 1027 return (0); 1028} 1029 1030int 1031pmu_set_speed(int low_speed) 1032{ 1033 struct pmu_softc *sc; 1034 uint8_t sleepcmd[] = {'W', 'O', 'O', 'F', 0}; 1035 uint8_t resp[16]; 1036 1037 sc = device_get_softc(pmu); 1038 pmu_write_reg(sc, vIER, 0x10); 1039 spinlock_enter(); 1040 mtdec(0x7fffffff); 1041 mb(); 1042 mtdec(0x7fffffff); 1043 1044 sleepcmd[4] = low_speed; 1045 pmu_send(sc, PMU_CPU_SPEED, 5, sleepcmd, 16, resp); 1046 unin_chip_sleep(NULL, 1); 1047 platform_sleep(); 1048 unin_chip_wake(NULL); 1049 1050 mtdec(1); /* Force a decrementer exception */ 1051 spinlock_exit(); 1052 pmu_write_reg(sc, vIER, 0x90); 1053 1054 return (0); 1055} 1056