pmu.c revision 260674
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 260674 2014-01-15 06:17:15Z 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/altivec.h> /* For save_vec() */ 49#include <machine/bus.h> 50#include <machine/cpu.h> 51#include <machine/fpu.h> /* For save_fpu() */ 52#include <machine/hid.h> 53#include <machine/intr_machdep.h> 54#include <machine/md_var.h> 55#include <machine/pcb.h> 56#include <machine/pio.h> 57#include <machine/resource.h> 58#include <machine/setjmp.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 */ 79static int pmu_probe(device_t); 80static int pmu_attach(device_t); 81static int pmu_detach(device_t); 82 83/* 84 * Clock interface 85 */ 86static int pmu_gettime(device_t dev, struct timespec *ts); 87static int pmu_settime(device_t dev, struct timespec *ts); 88 89/* 90 * ADB Interface 91 */ 92 93static u_int pmu_adb_send(device_t dev, u_char command_byte, int len, 94 u_char *data, u_char poll); 95static u_int pmu_adb_autopoll(device_t dev, uint16_t mask); 96static u_int pmu_poll(device_t dev); 97 98/* 99 * Power interface 100 */ 101 102static void pmu_shutdown(void *xsc, int howto); 103static void pmu_set_sleepled(void *xsc, int onoff); 104static int pmu_server_mode(SYSCTL_HANDLER_ARGS); 105static int pmu_acline_state(SYSCTL_HANDLER_ARGS); 106static int pmu_query_battery(struct pmu_softc *sc, int batt, 107 struct pmu_battstate *info); 108static int pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS); 109static void pmu_sleep_int(void); 110 111/* 112 * List of battery-related sysctls we might ask for 113 */ 114 115enum { 116 PMU_BATSYSCTL_PRESENT = 1 << 8, 117 PMU_BATSYSCTL_CHARGING = 2 << 8, 118 PMU_BATSYSCTL_CHARGE = 3 << 8, 119 PMU_BATSYSCTL_MAXCHARGE = 4 << 8, 120 PMU_BATSYSCTL_CURRENT = 5 << 8, 121 PMU_BATSYSCTL_VOLTAGE = 6 << 8, 122 PMU_BATSYSCTL_TIME = 7 << 8, 123 PMU_BATSYSCTL_LIFE = 8 << 8 124}; 125 126static device_method_t pmu_methods[] = { 127 /* Device interface */ 128 DEVMETHOD(device_probe, pmu_probe), 129 DEVMETHOD(device_attach, pmu_attach), 130 DEVMETHOD(device_detach, pmu_detach), 131 DEVMETHOD(device_shutdown, bus_generic_shutdown), 132 133 /* ADB bus interface */ 134 DEVMETHOD(adb_hb_send_raw_packet, pmu_adb_send), 135 DEVMETHOD(adb_hb_controller_poll, pmu_poll), 136 DEVMETHOD(adb_hb_set_autopoll_mask, pmu_adb_autopoll), 137 138 /* Clock interface */ 139 DEVMETHOD(clock_gettime, pmu_gettime), 140 DEVMETHOD(clock_settime, pmu_settime), 141 142 DEVMETHOD_END 143}; 144 145static driver_t pmu_driver = { 146 "pmu", 147 pmu_methods, 148 sizeof(struct pmu_softc), 149}; 150 151static devclass_t pmu_devclass; 152 153DRIVER_MODULE(pmu, macio, pmu_driver, pmu_devclass, 0, 0); 154DRIVER_MODULE(adb, pmu, adb_driver, adb_devclass, 0, 0); 155 156static int pmuextint_probe(device_t); 157static int pmuextint_attach(device_t); 158 159static device_method_t pmuextint_methods[] = { 160 /* Device interface */ 161 DEVMETHOD(device_probe, pmuextint_probe), 162 DEVMETHOD(device_attach, pmuextint_attach), 163 164 {0,0} 165}; 166 167static driver_t pmuextint_driver = { 168 "pmuextint", 169 pmuextint_methods, 170 0 171}; 172 173static devclass_t pmuextint_devclass; 174 175DRIVER_MODULE(pmuextint, macgpio, pmuextint_driver, pmuextint_devclass, 0, 0); 176 177/* Make sure uhid is loaded, as it turns off some of the ADB emulation */ 178MODULE_DEPEND(pmu, usb, 1, 1, 1); 179 180static void pmu_intr(void *arg); 181static void pmu_in(struct pmu_softc *sc); 182static void pmu_out(struct pmu_softc *sc); 183static void pmu_ack_on(struct pmu_softc *sc); 184static void pmu_ack_off(struct pmu_softc *sc); 185static int pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, 186 int rlen, uint8_t *out_msg); 187static uint8_t pmu_read_reg(struct pmu_softc *sc, u_int offset); 188static void pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value); 189static int pmu_intr_state(struct pmu_softc *); 190 191/* these values shows that number of data returned after 'send' cmd is sent */ 192static signed char pm_send_cmd_type[] = { 193 -1, -1, -1, -1, -1, -1, -1, -1, 194 -1, -1, -1, -1, -1, -1, -1, -1, 195 0x01, 0x01, -1, -1, -1, -1, -1, -1, 196 0x00, 0x00, -1, -1, -1, -1, -1, 0x00, 197 -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1, 198 0x00, -1, -1, -1, -1, -1, -1, -1, 199 0x04, 0x14, -1, 0x03, -1, -1, -1, -1, 200 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, 201 0x01, 0x01, -1, -1, -1, -1, -1, -1, 202 0x00, 0x00, -1, -1, 0x01, -1, -1, -1, 203 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01, 204 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1, 205 0x02, -1, -1, -1, -1, -1, -1, -1, 206 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, 207 0x01, 0x01, 0x01, -1, -1, -1, -1, -1, 208 0x00, 0x00, -1, -1, -1, 0x05, 0x04, 0x04, 209 0x04, -1, 0x00, -1, -1, -1, -1, -1, 210 0x00, -1, -1, -1, -1, -1, -1, -1, 211 0x01, 0x02, -1, -1, -1, -1, -1, -1, 212 0x00, 0x00, -1, -1, -1, -1, -1, -1, 213 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1, 214 0x01, 0x01, 0x03, 0x02, -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 -1, -1, -1, -1, -1, -1, -1, -1, 219 0x00, -1, -1, -1, -1, -1, -1, -1, 220 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1, 221 -1, 0x04, 0x00, -1, -1, -1, -1, -1, 222 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00, 223 -1, -1, -1, -1, -1, -1, -1, -1, 224 -1, -1, -1, -1, -1, -1, -1, -1 225}; 226 227/* these values shows that number of data returned after 'receive' cmd is sent */ 228static signed char pm_receive_cmd_type[] = { 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 0x02, 0x02, -1, -1, -1, -1, -1, 0x00, 233 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 234 -1, -1, -1, -1, -1, -1, -1, -1, 235 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 236 0x05, 0x15, -1, 0x02, -1, -1, -1, -1, 237 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 238 0x02, 0x02, -1, -1, -1, -1, -1, -1, 239 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 240 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1, 241 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 242 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1, 243 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 244 -1, -1, -1, -1, -1, 0x01, 0x01, 0x01, 245 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 246 0x06, -1, -1, -1, -1, -1, -1, -1, 247 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 248 0x02, 0x02, -1, -1, -1, -1, -1, -1, 249 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 250 0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1, 251 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 252 -1, -1, -1, -1, -1, -1, -1, -1, 253 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 254 -1, -1, -1, -1, -1, -1, -1, -1, 255 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 256 0x02, 0x02, -1, -1, 0x02, -1, -1, -1, 257 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 258 -1, -1, 0x02, -1, -1, -1, -1, 0x00, 259 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 260 -1, -1, -1, -1, -1, -1, -1, -1, 261}; 262 263/* We only have one of each device, so globals are safe */ 264static device_t pmu = NULL; 265static device_t pmu_extint = NULL; 266 267static int 268pmuextint_probe(device_t dev) 269{ 270 const char *type = ofw_bus_get_type(dev); 271 272 if (strcmp(type, "extint-gpio1") != 0) 273 return (ENXIO); 274 275 device_set_desc(dev, "Apple PMU99 External Interrupt"); 276 return (0); 277} 278 279static int 280pmu_probe(device_t dev) 281{ 282 const char *type = ofw_bus_get_type(dev); 283 284 if (strcmp(type, "via-pmu") != 0) 285 return (ENXIO); 286 287 device_set_desc(dev, "Apple PMU99 Controller"); 288 return (0); 289} 290 291 292static int 293setup_pmu_intr(device_t dev, device_t extint) 294{ 295 struct pmu_softc *sc; 296 sc = device_get_softc(dev); 297 298 sc->sc_irqrid = 0; 299 sc->sc_irq = bus_alloc_resource_any(extint, SYS_RES_IRQ, &sc->sc_irqrid, 300 RF_ACTIVE); 301 if (sc->sc_irq == NULL) { 302 device_printf(dev, "could not allocate interrupt\n"); 303 return (ENXIO); 304 } 305 306 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC | INTR_MPSAFE 307 | INTR_ENTROPY, NULL, pmu_intr, dev, &sc->sc_ih) != 0) { 308 device_printf(dev, "could not setup interrupt\n"); 309 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, 310 sc->sc_irq); 311 return (ENXIO); 312 } 313 314 return (0); 315} 316 317static int 318pmuextint_attach(device_t dev) 319{ 320 pmu_extint = dev; 321 if (pmu) 322 return (setup_pmu_intr(pmu,dev)); 323 324 return (0); 325} 326 327static int 328pmu_attach(device_t dev) 329{ 330 struct pmu_softc *sc; 331 332 int i; 333 uint8_t reg; 334 uint8_t cmd[2] = {2, 0}; 335 uint8_t resp[16]; 336 phandle_t node,child; 337 struct sysctl_ctx_list *ctx; 338 struct sysctl_oid *tree; 339 340 sc = device_get_softc(dev); 341 sc->sc_dev = dev; 342 343 sc->sc_memrid = 0; 344 sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 345 &sc->sc_memrid, RF_ACTIVE); 346 347 mtx_init(&sc->sc_mutex,"pmu",NULL,MTX_DEF | MTX_RECURSE); 348 349 if (sc->sc_memr == NULL) { 350 device_printf(dev, "Could not alloc mem resource!\n"); 351 return (ENXIO); 352 } 353 354 /* 355 * Our interrupt is attached to a GPIO pin. Depending on probe order, 356 * we may not have found it yet. If we haven't, it will find us, and 357 * attach our interrupt then. 358 */ 359 pmu = dev; 360 if (pmu_extint != NULL) { 361 if (setup_pmu_intr(dev,pmu_extint) != 0) 362 return (ENXIO); 363 } 364 365 sc->sc_autopoll = 0; 366 sc->sc_batteries = 0; 367 sc->adb_bus = NULL; 368 sc->sc_leddev = NULL; 369 370 /* Init PMU */ 371 372 pmu_write_reg(sc, vBufB, pmu_read_reg(sc, vBufB) | vPB4); 373 pmu_write_reg(sc, vDirB, (pmu_read_reg(sc, vDirB) | vPB4) & ~vPB3); 374 375 reg = PMU_DEFAULTS; 376 pmu_send(sc, PMU_SET_IMASK, 1, ®, 16, resp); 377 378 pmu_write_reg(sc, vIER, 0x94); /* make sure VIA interrupts are on */ 379 380 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp); 381 pmu_send(sc, PMU_GET_VERSION, 1, cmd, 16, resp); 382 383 /* Initialize child buses (ADB) */ 384 node = ofw_bus_get_node(dev); 385 386 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 387 char name[32]; 388 389 memset(name, 0, sizeof(name)); 390 OF_getprop(child, "name", name, sizeof(name)); 391 392 if (bootverbose) 393 device_printf(dev, "PMU child <%s>\n",name); 394 395 if (strncmp(name, "adb", 4) == 0) { 396 sc->adb_bus = device_add_child(dev,"adb",-1); 397 } 398 399 if (strncmp(name, "power-mgt", 9) == 0) { 400 uint32_t prim_info[9]; 401 402 if (OF_getprop(child, "prim-info", prim_info, 403 sizeof(prim_info)) >= 7) 404 sc->sc_batteries = (prim_info[6] >> 16) & 0xff; 405 406 if (bootverbose && sc->sc_batteries > 0) 407 device_printf(dev, "%d batteries detected\n", 408 sc->sc_batteries); 409 } 410 } 411 412 /* 413 * Set up sysctls 414 */ 415 416 ctx = device_get_sysctl_ctx(dev); 417 tree = device_get_sysctl_tree(dev); 418 419 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 420 "server_mode", CTLTYPE_INT | CTLFLAG_RW, sc, 0, 421 pmu_server_mode, "I", "Enable reboot after power failure"); 422 423 if (sc->sc_batteries > 0) { 424 struct sysctl_oid *oid, *battroot; 425 char battnum[2]; 426 427 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 428 "acline", CTLTYPE_INT | CTLFLAG_RD, sc, 0, 429 pmu_acline_state, "I", "AC Line Status"); 430 431 battroot = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 432 "batteries", CTLFLAG_RD, 0, "Battery Information"); 433 434 for (i = 0; i < sc->sc_batteries; i++) { 435 battnum[0] = i + '0'; 436 battnum[1] = '\0'; 437 438 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(battroot), 439 OID_AUTO, battnum, CTLFLAG_RD, 0, 440 "Battery Information"); 441 442 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 443 "present", CTLTYPE_INT | CTLFLAG_RD, sc, 444 PMU_BATSYSCTL_PRESENT | i, pmu_battquery_sysctl, 445 "I", "Battery present"); 446 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 447 "charging", CTLTYPE_INT | CTLFLAG_RD, sc, 448 PMU_BATSYSCTL_CHARGING | i, pmu_battquery_sysctl, 449 "I", "Battery charging"); 450 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 451 "charge", CTLTYPE_INT | CTLFLAG_RD, sc, 452 PMU_BATSYSCTL_CHARGE | i, pmu_battquery_sysctl, 453 "I", "Battery charge (mAh)"); 454 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 455 "maxcharge", CTLTYPE_INT | CTLFLAG_RD, sc, 456 PMU_BATSYSCTL_MAXCHARGE | i, pmu_battquery_sysctl, 457 "I", "Maximum battery capacity (mAh)"); 458 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 459 "rate", CTLTYPE_INT | CTLFLAG_RD, sc, 460 PMU_BATSYSCTL_CURRENT | i, pmu_battquery_sysctl, 461 "I", "Battery discharge rate (mA)"); 462 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 463 "voltage", CTLTYPE_INT | CTLFLAG_RD, sc, 464 PMU_BATSYSCTL_VOLTAGE | i, pmu_battquery_sysctl, 465 "I", "Battery voltage (mV)"); 466 467 /* Knobs for mental compatibility with ACPI */ 468 469 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 470 "time", CTLTYPE_INT | CTLFLAG_RD, sc, 471 PMU_BATSYSCTL_TIME | i, pmu_battquery_sysctl, 472 "I", "Time Remaining (minutes)"); 473 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 474 "life", CTLTYPE_INT | CTLFLAG_RD, sc, 475 PMU_BATSYSCTL_LIFE | i, pmu_battquery_sysctl, 476 "I", "Capacity remaining (percent)"); 477 } 478 } 479 480 /* 481 * Set up LED interface 482 */ 483 484 sc->sc_leddev = led_create(pmu_set_sleepled, sc, "sleepled"); 485 486 /* 487 * Register RTC 488 */ 489 490 clock_register(dev, 1000); 491 492 /* 493 * Register power control handler 494 */ 495 EVENTHANDLER_REGISTER(shutdown_final, pmu_shutdown, sc, 496 SHUTDOWN_PRI_LAST); 497 498 return (bus_generic_attach(dev)); 499} 500 501static int 502pmu_detach(device_t dev) 503{ 504 struct pmu_softc *sc; 505 506 sc = device_get_softc(dev); 507 508 if (sc->sc_leddev != NULL) 509 led_destroy(sc->sc_leddev); 510 511 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih); 512 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, sc->sc_irq); 513 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid, sc->sc_memr); 514 mtx_destroy(&sc->sc_mutex); 515 516 return (bus_generic_detach(dev)); 517} 518 519static uint8_t 520pmu_read_reg(struct pmu_softc *sc, u_int offset) 521{ 522 return (bus_read_1(sc->sc_memr, offset)); 523} 524 525static void 526pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value) 527{ 528 bus_write_1(sc->sc_memr, offset, value); 529} 530 531static int 532pmu_send_byte(struct pmu_softc *sc, uint8_t data) 533{ 534 535 pmu_out(sc); 536 pmu_write_reg(sc, vSR, data); 537 pmu_ack_off(sc); 538 /* wait for intr to come up */ 539 /* XXX should add a timeout and bail if it expires */ 540 do {} while (pmu_intr_state(sc) == 0); 541 pmu_ack_on(sc); 542 do {} while (pmu_intr_state(sc)); 543 pmu_ack_on(sc); 544 return 0; 545} 546 547static inline int 548pmu_read_byte(struct pmu_softc *sc, uint8_t *data) 549{ 550 volatile uint8_t scratch; 551 pmu_in(sc); 552 scratch = pmu_read_reg(sc, vSR); 553 pmu_ack_off(sc); 554 /* wait for intr to come up */ 555 do {} while (pmu_intr_state(sc) == 0); 556 pmu_ack_on(sc); 557 do {} while (pmu_intr_state(sc)); 558 *data = pmu_read_reg(sc, vSR); 559 return 0; 560} 561 562static int 563pmu_intr_state(struct pmu_softc *sc) 564{ 565 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0); 566} 567 568static int 569pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen, 570 uint8_t *out_msg) 571{ 572 struct pmu_softc *sc = cookie; 573 int i, rcv_len = -1; 574 uint8_t out_len, intreg; 575 576 intreg = pmu_read_reg(sc, vIER); 577 intreg &= 0x10; 578 pmu_write_reg(sc, vIER, intreg); 579 580 /* wait idle */ 581 do {} while (pmu_intr_state(sc)); 582 583 /* send command */ 584 pmu_send_byte(sc, cmd); 585 586 /* send length if necessary */ 587 if (pm_send_cmd_type[cmd] < 0) { 588 pmu_send_byte(sc, length); 589 } 590 591 for (i = 0; i < length; i++) { 592 pmu_send_byte(sc, in_msg[i]); 593 } 594 595 /* see if there's data to read */ 596 rcv_len = pm_receive_cmd_type[cmd]; 597 if (rcv_len == 0) 598 goto done; 599 600 /* read command */ 601 if (rcv_len == 1) { 602 pmu_read_byte(sc, out_msg); 603 goto done; 604 } else 605 out_msg[0] = cmd; 606 if (rcv_len < 0) { 607 pmu_read_byte(sc, &out_len); 608 rcv_len = out_len + 1; 609 } 610 for (i = 1; i < min(rcv_len, rlen); i++) 611 pmu_read_byte(sc, &out_msg[i]); 612 613done: 614 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90); 615 616 return rcv_len; 617} 618 619 620static u_int 621pmu_poll(device_t dev) 622{ 623 pmu_intr(dev); 624 return (0); 625} 626 627static void 628pmu_in(struct pmu_softc *sc) 629{ 630 uint8_t reg; 631 632 reg = pmu_read_reg(sc, vACR); 633 reg &= ~vSR_OUT; 634 reg |= 0x0c; 635 pmu_write_reg(sc, vACR, reg); 636} 637 638static void 639pmu_out(struct pmu_softc *sc) 640{ 641 uint8_t reg; 642 643 reg = pmu_read_reg(sc, vACR); 644 reg |= vSR_OUT; 645 reg |= 0x0c; 646 pmu_write_reg(sc, vACR, reg); 647} 648 649static void 650pmu_ack_off(struct pmu_softc *sc) 651{ 652 uint8_t reg; 653 654 reg = pmu_read_reg(sc, vBufB); 655 reg &= ~vPB4; 656 pmu_write_reg(sc, vBufB, reg); 657} 658 659static void 660pmu_ack_on(struct pmu_softc *sc) 661{ 662 uint8_t reg; 663 664 reg = pmu_read_reg(sc, vBufB); 665 reg |= vPB4; 666 pmu_write_reg(sc, vBufB, reg); 667} 668 669static void 670pmu_intr(void *arg) 671{ 672 device_t dev; 673 struct pmu_softc *sc; 674 675 unsigned int len; 676 uint8_t resp[16]; 677 uint8_t junk[16]; 678 679 dev = (device_t)arg; 680 sc = device_get_softc(dev); 681 682 mtx_lock(&sc->sc_mutex); 683 684 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */ 685 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp); 686 687 mtx_unlock(&sc->sc_mutex); 688 689 if ((len < 1) || (resp[1] == 0)) { 690 return; 691 } 692 693 if (resp[1] & PMU_INT_ADB) { 694 /* 695 * the PMU will turn off autopolling after each command that 696 * it did not issue, so we assume any but TALK R0 is ours and 697 * re-enable autopoll here whenever we receive an ACK for a 698 * non TR0 command. 699 */ 700 mtx_lock(&sc->sc_mutex); 701 702 if ((resp[2] & 0x0f) != (ADB_COMMAND_TALK << 2)) { 703 if (sc->sc_autopoll) { 704 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, 705 (sc->sc_autopoll >> 8) & 0xff, 706 sc->sc_autopoll & 0xff}; 707 708 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, junk); 709 } 710 } 711 712 mtx_unlock(&sc->sc_mutex); 713 714 adb_receive_raw_packet(sc->adb_bus,resp[1],resp[2], 715 len - 3,&resp[3]); 716 } 717 if (resp[1] & PMU_INT_ENVIRONMENT) { 718 /* if the lid was just closed, notify devd. */ 719 if ((resp[2] & PMU_ENV_LID_CLOSED) && (!sc->lid_closed)) { 720 sc->lid_closed = 1; 721 if (devctl_process_running()) 722 devctl_notify("PMU", "lid", "close", NULL); 723 } 724 else if (!(resp[2] & PMU_ENV_LID_CLOSED) && (sc->lid_closed)) { 725 /* if the lid was just opened, notify devd. */ 726 if (devctl_process_running()) 727 devctl_notify("PMU", "lid", "open", NULL); 728 sc->lid_closed = 0; 729 } 730 } 731} 732 733static u_int 734pmu_adb_send(device_t dev, u_char command_byte, int len, u_char *data, 735 u_char poll) 736{ 737 struct pmu_softc *sc = device_get_softc(dev); 738 int i,replen; 739 uint8_t packet[16], resp[16]; 740 741 /* construct an ADB command packet and send it */ 742 743 packet[0] = command_byte; 744 745 packet[1] = 0; 746 packet[2] = len; 747 for (i = 0; i < len; i++) 748 packet[i + 3] = data[i]; 749 750 mtx_lock(&sc->sc_mutex); 751 replen = pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp); 752 mtx_unlock(&sc->sc_mutex); 753 754 if (poll) 755 pmu_poll(dev); 756 757 return 0; 758} 759 760static u_int 761pmu_adb_autopoll(device_t dev, uint16_t mask) 762{ 763 struct pmu_softc *sc = device_get_softc(dev); 764 765 /* magical incantation to re-enable autopolling */ 766 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (mask >> 8) & 0xff, mask & 0xff}; 767 uint8_t resp[16]; 768 769 mtx_lock(&sc->sc_mutex); 770 771 if (sc->sc_autopoll == mask) { 772 mtx_unlock(&sc->sc_mutex); 773 return 0; 774 } 775 776 sc->sc_autopoll = mask & 0xffff; 777 778 if (mask) 779 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 780 else 781 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp); 782 783 mtx_unlock(&sc->sc_mutex); 784 785 return 0; 786} 787 788static void 789pmu_shutdown(void *xsc, int howto) 790{ 791 struct pmu_softc *sc = xsc; 792 uint8_t cmd[] = {'M', 'A', 'T', 'T'}; 793 794 if (howto & RB_HALT) 795 pmu_send(sc, PMU_POWER_OFF, 4, cmd, 0, NULL); 796 else 797 pmu_send(sc, PMU_RESET_CPU, 0, NULL, 0, NULL); 798 799 for (;;); 800} 801 802static void 803pmu_set_sleepled(void *xsc, int onoff) 804{ 805 struct pmu_softc *sc = xsc; 806 uint8_t cmd[] = {4, 0, 0}; 807 808 cmd[2] = onoff; 809 810 mtx_lock(&sc->sc_mutex); 811 pmu_send(sc, PMU_SET_SLEEPLED, 3, cmd, 0, NULL); 812 mtx_unlock(&sc->sc_mutex); 813} 814 815static int 816pmu_server_mode(SYSCTL_HANDLER_ARGS) 817{ 818 struct pmu_softc *sc = arg1; 819 820 u_int server_mode = 0; 821 uint8_t getcmd[] = {PMU_PWR_GET_POWERUP_EVENTS}; 822 uint8_t setcmd[] = {0, 0, PMU_PWR_WAKEUP_AC_INSERT}; 823 uint8_t resp[3]; 824 int error, len; 825 826 mtx_lock(&sc->sc_mutex); 827 len = pmu_send(sc, PMU_POWER_EVENTS, 1, getcmd, 3, resp); 828 mtx_unlock(&sc->sc_mutex); 829 830 if (len == 3) 831 server_mode = (resp[2] & PMU_PWR_WAKEUP_AC_INSERT) ? 1 : 0; 832 833 error = sysctl_handle_int(oidp, &server_mode, 0, req); 834 835 if (len != 3) 836 return (EINVAL); 837 838 if (error || !req->newptr) 839 return (error); 840 841 if (server_mode == 1) 842 setcmd[0] = PMU_PWR_SET_POWERUP_EVENTS; 843 else if (server_mode == 0) 844 setcmd[0] = PMU_PWR_CLR_POWERUP_EVENTS; 845 else 846 return (EINVAL); 847 848 setcmd[1] = resp[1]; 849 850 mtx_lock(&sc->sc_mutex); 851 pmu_send(sc, PMU_POWER_EVENTS, 3, setcmd, 2, resp); 852 mtx_unlock(&sc->sc_mutex); 853 854 return (0); 855} 856 857static int 858pmu_query_battery(struct pmu_softc *sc, int batt, struct pmu_battstate *info) 859{ 860 uint8_t reg; 861 uint8_t resp[16]; 862 int len; 863 864 reg = batt + 1; 865 866 mtx_lock(&sc->sc_mutex); 867 len = pmu_send(sc, PMU_SMART_BATTERY_STATE, 1, ®, 16, resp); 868 mtx_unlock(&sc->sc_mutex); 869 870 if (len < 3) 871 return (-1); 872 873 /* All PMU battery info replies share a common header: 874 * Byte 1 Payload Format 875 * Byte 2 Battery Flags 876 */ 877 878 info->state = resp[2]; 879 880 switch (resp[1]) { 881 case 3: 882 case 4: 883 /* 884 * Formats 3 and 4 appear to be the same: 885 * Byte 3 Charge 886 * Byte 4 Max Charge 887 * Byte 5 Current 888 * Byte 6 Voltage 889 */ 890 891 info->charge = resp[3]; 892 info->maxcharge = resp[4]; 893 /* Current can be positive or negative */ 894 info->current = (int8_t)resp[5]; 895 info->voltage = resp[6]; 896 break; 897 case 5: 898 /* 899 * Formats 5 is a wider version of formats 3 and 4 900 * Byte 3-4 Charge 901 * Byte 5-6 Max Charge 902 * Byte 7-8 Current 903 * Byte 9-10 Voltage 904 */ 905 906 info->charge = (resp[3] << 8) | resp[4]; 907 info->maxcharge = (resp[5] << 8) | resp[6]; 908 /* Current can be positive or negative */ 909 info->current = (int16_t)((resp[7] << 8) | resp[8]); 910 info->voltage = (resp[9] << 8) | resp[10]; 911 break; 912 default: 913 device_printf(sc->sc_dev, "Unknown battery info format (%d)!\n", 914 resp[1]); 915 return (-1); 916 } 917 918 return (0); 919} 920 921static int 922pmu_acline_state(SYSCTL_HANDLER_ARGS) 923{ 924 struct pmu_softc *sc; 925 struct pmu_battstate batt; 926 int error, result; 927 928 sc = arg1; 929 930 /* The PMU treats the AC line status as a property of the battery */ 931 error = pmu_query_battery(sc, 0, &batt); 932 933 if (error != 0) 934 return (error); 935 936 result = (batt.state & PMU_PWR_AC_PRESENT) ? 1 : 0; 937 error = sysctl_handle_int(oidp, &result, 0, req); 938 939 return (error); 940} 941 942static int 943pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS) 944{ 945 struct pmu_softc *sc; 946 struct pmu_battstate batt; 947 int error, result; 948 949 sc = arg1; 950 951 error = pmu_query_battery(sc, arg2 & 0x00ff, &batt); 952 953 if (error != 0) 954 return (error); 955 956 switch (arg2 & 0xff00) { 957 case PMU_BATSYSCTL_PRESENT: 958 result = (batt.state & PMU_PWR_BATT_PRESENT) ? 1 : 0; 959 break; 960 case PMU_BATSYSCTL_CHARGING: 961 result = (batt.state & PMU_PWR_BATT_CHARGING) ? 1 : 0; 962 break; 963 case PMU_BATSYSCTL_CHARGE: 964 result = batt.charge; 965 break; 966 case PMU_BATSYSCTL_MAXCHARGE: 967 result = batt.maxcharge; 968 break; 969 case PMU_BATSYSCTL_CURRENT: 970 result = batt.current; 971 break; 972 case PMU_BATSYSCTL_VOLTAGE: 973 result = batt.voltage; 974 break; 975 case PMU_BATSYSCTL_TIME: 976 /* Time remaining until full charge/discharge, in minutes */ 977 978 if (batt.current >= 0) 979 result = (batt.maxcharge - batt.charge) /* mAh */ * 60 980 / batt.current /* mA */; 981 else 982 result = (batt.charge /* mAh */ * 60) 983 / (-batt.current /* mA */); 984 break; 985 case PMU_BATSYSCTL_LIFE: 986 /* Battery charge fraction, in percent */ 987 result = (batt.charge * 100) / batt.maxcharge; 988 break; 989 default: 990 /* This should never happen */ 991 result = -1; 992 }; 993 994 error = sysctl_handle_int(oidp, &result, 0, req); 995 996 return (error); 997} 998 999#define DIFF19041970 2082844800 1000 1001static int 1002pmu_gettime(device_t dev, struct timespec *ts) 1003{ 1004 struct pmu_softc *sc = device_get_softc(dev); 1005 uint8_t resp[16]; 1006 uint32_t sec; 1007 1008 mtx_lock(&sc->sc_mutex); 1009 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp); 1010 mtx_unlock(&sc->sc_mutex); 1011 1012 memcpy(&sec, &resp[1], 4); 1013 ts->tv_sec = sec - DIFF19041970; 1014 ts->tv_nsec = 0; 1015 1016 return (0); 1017} 1018 1019static int 1020pmu_settime(device_t dev, struct timespec *ts) 1021{ 1022 struct pmu_softc *sc = device_get_softc(dev); 1023 uint32_t sec; 1024 1025 sec = ts->tv_sec + DIFF19041970; 1026 1027 mtx_lock(&sc->sc_mutex); 1028 pmu_send(sc, PMU_SET_RTC, sizeof(sec), (uint8_t *)&sec, 0, NULL); 1029 mtx_unlock(&sc->sc_mutex); 1030 1031 return (0); 1032} 1033 1034static register_t sprgs[4]; 1035static register_t srrs[2]; 1036extern void *ap_pcpu; 1037 1038void pmu_sleep_int(void) 1039{ 1040 static u_quad_t timebase = 0; 1041 jmp_buf resetjb; 1042 struct thread *fputd; 1043 struct thread *vectd; 1044 register_t hid0; 1045 register_t msr; 1046 register_t saved_msr; 1047 1048 ap_pcpu = pcpup; 1049 1050 PCPU_SET(restore, &resetjb); 1051 1052 *(unsigned long *)0x80 = 0x100; 1053 saved_msr = mfmsr(); 1054 fputd = PCPU_GET(fputhread); 1055 vectd = PCPU_GET(vecthread); 1056 if (fputd != NULL) 1057 save_fpu(fputd); 1058 if (vectd != NULL) 1059 save_vec(vectd); 1060 if (setjmp(resetjb) == 0) { 1061 sprgs[0] = mfspr(SPR_SPRG0); 1062 sprgs[1] = mfspr(SPR_SPRG1); 1063 sprgs[2] = mfspr(SPR_SPRG2); 1064 sprgs[3] = mfspr(SPR_SPRG3); 1065 srrs[0] = mfspr(SPR_SRR0); 1066 srrs[1] = mfspr(SPR_SRR1); 1067 timebase = mftb(); 1068 powerpc_sync(); 1069 flush_disable_caches(); 1070 hid0 = mfspr(SPR_HID0); 1071 hid0 = (hid0 & ~(HID0_DOZE | HID0_NAP)) | HID0_SLEEP; 1072 powerpc_sync(); 1073 isync(); 1074 msr = mfmsr() | PSL_POW; 1075 mtspr(SPR_HID0, hid0); 1076 powerpc_sync(); 1077 1078 while (1) 1079 mtmsr(msr); 1080 } 1081 mttb(timebase); 1082 PCPU_SET(curthread, curthread); 1083 PCPU_SET(curpcb, curthread->td_pcb); 1084 pmap_activate(curthread); 1085 powerpc_sync(); 1086 mtspr(SPR_SPRG0, sprgs[0]); 1087 mtspr(SPR_SPRG1, sprgs[1]); 1088 mtspr(SPR_SPRG2, sprgs[2]); 1089 mtspr(SPR_SPRG3, sprgs[3]); 1090 mtspr(SPR_SRR0, srrs[0]); 1091 mtspr(SPR_SRR1, srrs[1]); 1092 mtmsr(saved_msr); 1093 if (fputd == curthread) 1094 enable_fpu(curthread); 1095 if (vectd == curthread) 1096 enable_vec(curthread); 1097 powerpc_sync(); 1098} 1099 1100int 1101pmu_set_speed(int low_speed) 1102{ 1103 struct pmu_softc *sc; 1104 uint8_t sleepcmd[] = {'W', 'O', 'O', 'F', 0}; 1105 uint8_t resp[16]; 1106 1107 sc = device_get_softc(pmu); 1108 pmu_write_reg(sc, vIER, 0x10); 1109 spinlock_enter(); 1110 mtdec(0x7fffffff); 1111 mb(); 1112 mtdec(0x7fffffff); 1113 1114 sleepcmd[4] = low_speed; 1115 pmu_send(sc, PMU_CPU_SPEED, 5, sleepcmd, 16, resp); 1116 unin_chip_sleep(NULL, 1); 1117 pmu_sleep_int(); 1118 unin_chip_wake(NULL); 1119 1120 mtdec(1); /* Force a decrementer exception */ 1121 spinlock_exit(); 1122 pmu_write_reg(sc, vIER, 0x90); 1123 1124 return (0); 1125} 1126