pmu.c revision 194027
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: head/sys/powerpc/powermac/pmu.c 194027 2009-06-11 17:16:04Z avg $"); 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/sysctl.h> 39 40#include <dev/ofw/ofw_bus.h> 41#include <dev/ofw/openfirm.h> 42#include <dev/led/led.h> 43 44#include <machine/bus.h> 45#include <machine/intr.h> 46#include <machine/intr_machdep.h> 47#include <machine/md_var.h> 48#include <machine/pio.h> 49#include <machine/resource.h> 50 51#include <vm/vm.h> 52#include <vm/pmap.h> 53 54#include <sys/rman.h> 55 56#include <dev/adb/adb.h> 57 58#include "pmuvar.h" 59#include "viareg.h" 60 61/* 62 * MacIO interface 63 */ 64static int pmu_probe(device_t); 65static int pmu_attach(device_t); 66static int pmu_detach(device_t); 67 68static u_int pmu_adb_send(device_t dev, u_char command_byte, int len, 69 u_char *data, u_char poll); 70static u_int pmu_adb_autopoll(device_t dev, uint16_t mask); 71static u_int pmu_poll(device_t dev); 72 73static void pmu_set_sleepled(void *xsc, int onoff); 74static int pmu_server_mode(SYSCTL_HANDLER_ARGS); 75static int pmu_acline_state(SYSCTL_HANDLER_ARGS); 76static int pmu_query_battery(struct pmu_softc *sc, int batt, 77 struct pmu_battstate *info); 78static int pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS); 79 80/* 81 * List of battery-related sysctls we might ask for 82 */ 83 84enum { 85 PMU_BATSYSCTL_PRESENT = 1 << 8, 86 PMU_BATSYSCTL_CHARGING = 2 << 8, 87 PMU_BATSYSCTL_CHARGE = 3 << 8, 88 PMU_BATSYSCTL_MAXCHARGE = 4 << 8, 89 PMU_BATSYSCTL_CURRENT = 5 << 8, 90 PMU_BATSYSCTL_VOLTAGE = 6 << 8, 91 PMU_BATSYSCTL_TIME = 7 << 8, 92 PMU_BATSYSCTL_LIFE = 8 << 8 93}; 94 95static device_method_t pmu_methods[] = { 96 /* Device interface */ 97 DEVMETHOD(device_probe, pmu_probe), 98 DEVMETHOD(device_attach, pmu_attach), 99 DEVMETHOD(device_detach, pmu_detach), 100 DEVMETHOD(device_shutdown, bus_generic_shutdown), 101 DEVMETHOD(device_suspend, bus_generic_suspend), 102 DEVMETHOD(device_resume, bus_generic_resume), 103 104 /* bus interface, for ADB root */ 105 DEVMETHOD(bus_print_child, bus_generic_print_child), 106 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 107 108 /* ADB bus interface */ 109 DEVMETHOD(adb_hb_send_raw_packet, pmu_adb_send), 110 DEVMETHOD(adb_hb_controller_poll, pmu_poll), 111 DEVMETHOD(adb_hb_set_autopoll_mask, pmu_adb_autopoll), 112 113 { 0, 0 }, 114}; 115 116static driver_t pmu_driver = { 117 "pmu", 118 pmu_methods, 119 sizeof(struct pmu_softc), 120}; 121 122static devclass_t pmu_devclass; 123 124DRIVER_MODULE(pmu, macio, pmu_driver, pmu_devclass, 0, 0); 125DRIVER_MODULE(adb, pmu, adb_driver, adb_devclass, 0, 0); 126 127static int pmuextint_probe(device_t); 128static int pmuextint_attach(device_t); 129 130static device_method_t pmuextint_methods[] = { 131 /* Device interface */ 132 DEVMETHOD(device_probe, pmuextint_probe), 133 DEVMETHOD(device_attach, pmuextint_attach), 134 135 {0,0} 136}; 137 138static driver_t pmuextint_driver = { 139 "pmuextint", 140 pmuextint_methods, 141 0 142}; 143 144static devclass_t pmuextint_devclass; 145 146DRIVER_MODULE(pmuextint, macgpio, pmuextint_driver, pmuextint_devclass, 0, 0); 147 148/* Make sure uhid is loaded, as it turns off some of the ADB emulation */ 149MODULE_DEPEND(pmu, usb, 1, 1, 1); 150 151static void pmu_intr(void *arg); 152static void pmu_in(struct pmu_softc *sc); 153static void pmu_out(struct pmu_softc *sc); 154static void pmu_ack_on(struct pmu_softc *sc); 155static void pmu_ack_off(struct pmu_softc *sc); 156static int pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, 157 int rlen, uint8_t *out_msg); 158static uint8_t pmu_read_reg(struct pmu_softc *sc, u_int offset); 159static void pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value); 160static int pmu_intr_state(struct pmu_softc *); 161 162/* these values shows that number of data returned after 'send' cmd is sent */ 163static signed char pm_send_cmd_type[] = { 164 -1, -1, -1, -1, -1, -1, -1, -1, 165 -1, -1, -1, -1, -1, -1, -1, -1, 166 0x01, 0x01, -1, -1, -1, -1, -1, -1, 167 0x00, 0x00, -1, -1, -1, -1, -1, 0x00, 168 -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1, 169 0x00, -1, -1, -1, -1, -1, -1, -1, 170 0x04, 0x14, -1, 0x03, -1, -1, -1, -1, 171 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, 172 0x01, 0x01, -1, -1, -1, -1, -1, -1, 173 0x00, 0x00, -1, -1, 0x01, -1, -1, -1, 174 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01, 175 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1, 176 0x02, -1, -1, -1, -1, -1, -1, -1, 177 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, 178 0x01, 0x01, 0x01, -1, -1, -1, -1, -1, 179 0x00, 0x00, -1, -1, -1, -1, 0x04, 0x04, 180 0x04, -1, 0x00, -1, -1, -1, -1, -1, 181 0x00, -1, -1, -1, -1, -1, -1, -1, 182 0x01, 0x02, -1, -1, -1, -1, -1, -1, 183 0x00, 0x00, -1, -1, -1, -1, -1, -1, 184 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1, 185 0x01, 0x01, 0x03, 0x02, -1, -1, -1, -1, 186 -1, -1, -1, -1, -1, -1, -1, -1, 187 -1, -1, -1, -1, -1, -1, -1, -1, 188 -1, -1, -1, -1, -1, -1, -1, -1, 189 -1, -1, -1, -1, -1, -1, -1, -1, 190 0x00, -1, -1, -1, -1, -1, -1, -1, 191 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1, 192 -1, 0x04, 0x00, -1, -1, -1, -1, -1, 193 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00, 194 -1, -1, -1, -1, -1, -1, -1, -1, 195 -1, -1, -1, -1, -1, -1, -1, -1 196}; 197 198/* these values shows that number of data returned after 'receive' cmd is sent */ 199static signed char pm_receive_cmd_type[] = { 200 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 201 -1, -1, -1, -1, -1, -1, -1, -1, 202 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 203 0x02, 0x02, -1, -1, -1, -1, -1, 0x00, 204 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 205 -1, -1, -1, -1, -1, -1, -1, -1, 206 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 207 0x05, 0x15, -1, 0x02, -1, -1, -1, -1, 208 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 209 0x02, 0x02, -1, -1, -1, -1, -1, -1, 210 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 211 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1, 212 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 213 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1, 214 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 215 -1, -1, -1, -1, -1, -1, 0x01, 0x01, 216 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 217 0x06, -1, -1, -1, -1, -1, -1, -1, 218 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 219 0x02, 0x02, -1, -1, -1, -1, -1, -1, 220 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 221 0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1, 222 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 223 -1, -1, -1, -1, -1, -1, -1, -1, 224 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 225 -1, -1, -1, -1, -1, -1, -1, -1, 226 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 227 0x02, 0x02, -1, -1, 0x02, -1, -1, -1, 228 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 229 -1, -1, 0x02, -1, -1, -1, -1, 0x00, 230 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 231 -1, -1, -1, -1, -1, -1, -1, -1, 232}; 233 234/* We only have one of each device, so globals are safe */ 235static device_t pmu = NULL; 236static device_t pmu_extint = NULL; 237 238static int 239pmuextint_probe(device_t dev) 240{ 241 const char *type = ofw_bus_get_type(dev); 242 243 if (strcmp(type, "extint-gpio1") != 0) 244 return (ENXIO); 245 246 device_set_desc(dev, "Apple PMU99 External Interrupt"); 247 return (0); 248} 249 250static int 251pmu_probe(device_t dev) 252{ 253 const char *type = ofw_bus_get_type(dev); 254 255 if (strcmp(type, "via-pmu") != 0) 256 return (ENXIO); 257 258 device_set_desc(dev, "Apple PMU99 Controller"); 259 return (0); 260} 261 262 263static int 264setup_pmu_intr(device_t dev, device_t extint) 265{ 266 struct pmu_softc *sc; 267 sc = device_get_softc(dev); 268 269 sc->sc_irqrid = 0; 270 sc->sc_irq = bus_alloc_resource_any(extint, SYS_RES_IRQ, &sc->sc_irqrid, 271 RF_ACTIVE); 272 if (sc->sc_irq == NULL) { 273 device_printf(dev, "could not allocate interrupt\n"); 274 return (ENXIO); 275 } 276 277 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC | INTR_MPSAFE 278 | INTR_ENTROPY, NULL, pmu_intr, dev, &sc->sc_ih) != 0) { 279 device_printf(dev, "could not setup interrupt\n"); 280 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, 281 sc->sc_irq); 282 return (ENXIO); 283 } 284 285 return (0); 286} 287 288static int 289pmuextint_attach(device_t dev) 290{ 291 pmu_extint = dev; 292 if (pmu) 293 return (setup_pmu_intr(pmu,dev)); 294 295 return (0); 296} 297 298static int 299pmu_attach(device_t dev) 300{ 301 struct pmu_softc *sc; 302 303 int i; 304 uint8_t reg; 305 uint8_t cmd[2] = {2, 0}; 306 uint8_t resp[16]; 307 phandle_t node,child; 308 struct sysctl_ctx_list *ctx; 309 struct sysctl_oid *tree; 310 311 sc = device_get_softc(dev); 312 sc->sc_dev = dev; 313 314 sc->sc_memrid = 0; 315 sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 316 &sc->sc_memrid, RF_ACTIVE); 317 318 mtx_init(&sc->sc_mutex,"pmu",NULL,MTX_DEF | MTX_RECURSE); 319 320 if (sc->sc_memr == NULL) { 321 device_printf(dev, "Could not alloc mem resource!\n"); 322 return (ENXIO); 323 } 324 325 /* 326 * Our interrupt is attached to a GPIO pin. Depending on probe order, 327 * we may not have found it yet. If we haven't, it will find us, and 328 * attach our interrupt then. 329 */ 330 pmu = dev; 331 if (pmu_extint != NULL) { 332 if (setup_pmu_intr(dev,pmu_extint) != 0) 333 return (ENXIO); 334 } 335 336 sc->sc_autopoll = 0; 337 sc->sc_batteries = 0; 338 sc->adb_bus = NULL; 339 sc->sc_leddev = NULL; 340 341 /* Init PMU */ 342 343 reg = PMU_INT_TICK | PMU_INT_ADB | PMU_INT_PCEJECT | PMU_INT_SNDBRT; 344 reg |= PMU_INT_BATTERY; 345 reg |= PMU_INT_ENVIRONMENT; 346 pmu_send(sc, PMU_SET_IMASK, 1, ®, 16, resp); 347 348 pmu_write_reg(sc, vIER, 0x90); /* make sure VIA interrupts are on */ 349 350 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp); 351 pmu_send(sc, PMU_GET_VERSION, 1, cmd, 16, resp); 352 353 /* Initialize child buses (ADB) */ 354 node = ofw_bus_get_node(dev); 355 356 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 357 char name[32]; 358 359 memset(name, 0, sizeof(name)); 360 OF_getprop(child, "name", name, sizeof(name)); 361 362 if (bootverbose) 363 device_printf(dev, "PMU child <%s>\n",name); 364 365 if (strncmp(name, "adb", 4) == 0) { 366 sc->adb_bus = device_add_child(dev,"adb",-1); 367 } 368 369 if (strncmp(name, "power-mgt", 9) == 0) { 370 uint32_t prim_info[9]; 371 372 if (OF_getprop(child, "prim-info", prim_info, 373 sizeof(prim_info)) >= 7) 374 sc->sc_batteries = (prim_info[6] >> 16) & 0xff; 375 376 if (bootverbose && sc->sc_batteries > 0) 377 device_printf(dev, "%d batteries detected\n", 378 sc->sc_batteries); 379 } 380 } 381 382 /* 383 * Set up sysctls 384 */ 385 386 ctx = device_get_sysctl_ctx(dev); 387 tree = device_get_sysctl_tree(dev); 388 389 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 390 "server_mode", CTLTYPE_INT | CTLFLAG_RW, sc, 0, 391 pmu_server_mode, "I", "Enable reboot after power failure"); 392 393 if (sc->sc_batteries > 0) { 394 struct sysctl_oid *oid, *battroot; 395 char battnum[2]; 396 397 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 398 "acline", CTLTYPE_INT | CTLFLAG_RD, sc, 0, 399 pmu_acline_state, "I", "AC Line Status"); 400 401 battroot = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 402 "batteries", CTLFLAG_RD, 0, "Battery Information"); 403 404 for (i = 0; i < sc->sc_batteries; i++) { 405 battnum[0] = i + '0'; 406 battnum[1] = '\0'; 407 408 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(battroot), 409 OID_AUTO, battnum, CTLFLAG_RD, 0, 410 "Battery Information"); 411 412 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 413 "present", CTLTYPE_INT | CTLFLAG_RD, sc, 414 PMU_BATSYSCTL_PRESENT | i, pmu_battquery_sysctl, 415 "I", "Battery present"); 416 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 417 "charging", CTLTYPE_INT | CTLFLAG_RD, sc, 418 PMU_BATSYSCTL_CHARGING | i, pmu_battquery_sysctl, 419 "I", "Battery charging"); 420 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 421 "charge", CTLTYPE_INT | CTLFLAG_RD, sc, 422 PMU_BATSYSCTL_CHARGE | i, pmu_battquery_sysctl, 423 "I", "Battery charge (mAh)"); 424 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 425 "maxcharge", CTLTYPE_INT | CTLFLAG_RD, sc, 426 PMU_BATSYSCTL_MAXCHARGE | i, pmu_battquery_sysctl, 427 "I", "Maximum battery capacity (mAh)"); 428 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 429 "rate", CTLTYPE_INT | CTLFLAG_RD, sc, 430 PMU_BATSYSCTL_CURRENT | i, pmu_battquery_sysctl, 431 "I", "Battery discharge rate (mA)"); 432 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 433 "voltage", CTLTYPE_INT | CTLFLAG_RD, sc, 434 PMU_BATSYSCTL_VOLTAGE | i, pmu_battquery_sysctl, 435 "I", "Battery voltage (mV)"); 436 437 /* Knobs for mental compatibility with ACPI */ 438 439 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 440 "time", CTLTYPE_INT | CTLFLAG_RD, sc, 441 PMU_BATSYSCTL_TIME | i, pmu_battquery_sysctl, 442 "I", "Time Remaining (minutes)"); 443 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 444 "life", CTLTYPE_INT | CTLFLAG_RD, sc, 445 PMU_BATSYSCTL_LIFE | i, pmu_battquery_sysctl, 446 "I", "Capacity remaining (percent)"); 447 } 448 } 449 450 /* 451 * Set up LED interface 452 */ 453 454 sc->sc_leddev = led_create(pmu_set_sleepled, sc, "sleepled"); 455 456 return (bus_generic_attach(dev)); 457} 458 459static int 460pmu_detach(device_t dev) 461{ 462 struct pmu_softc *sc; 463 464 sc = device_get_softc(dev); 465 466 if (sc->sc_leddev != NULL) 467 led_destroy(sc->sc_leddev); 468 469 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih); 470 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, sc->sc_irq); 471 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid, sc->sc_memr); 472 mtx_destroy(&sc->sc_mutex); 473 474 return (bus_generic_detach(dev)); 475} 476 477static uint8_t 478pmu_read_reg(struct pmu_softc *sc, u_int offset) 479{ 480 return (bus_read_1(sc->sc_memr, offset)); 481} 482 483static void 484pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value) 485{ 486 bus_write_1(sc->sc_memr, offset, value); 487} 488 489static int 490pmu_send_byte(struct pmu_softc *sc, uint8_t data) 491{ 492 493 pmu_out(sc); 494 pmu_write_reg(sc, vSR, data); 495 pmu_ack_off(sc); 496 /* wait for intr to come up */ 497 /* XXX should add a timeout and bail if it expires */ 498 do {} while (pmu_intr_state(sc) == 0); 499 pmu_ack_on(sc); 500 do {} while (pmu_intr_state(sc)); 501 pmu_ack_on(sc); 502 return 0; 503} 504 505static inline int 506pmu_read_byte(struct pmu_softc *sc, uint8_t *data) 507{ 508 volatile uint8_t scratch; 509 pmu_in(sc); 510 scratch = pmu_read_reg(sc, vSR); 511 pmu_ack_off(sc); 512 /* wait for intr to come up */ 513 do {} while (pmu_intr_state(sc) == 0); 514 pmu_ack_on(sc); 515 do {} while (pmu_intr_state(sc)); 516 *data = pmu_read_reg(sc, vSR); 517 return 0; 518} 519 520static int 521pmu_intr_state(struct pmu_softc *sc) 522{ 523 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0); 524} 525 526static int 527pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen, 528 uint8_t *out_msg) 529{ 530 struct pmu_softc *sc = cookie; 531 int i, rcv_len = -1; 532 uint8_t out_len, intreg; 533 534 intreg = pmu_read_reg(sc, vIER); 535 intreg &= 0x10; 536 pmu_write_reg(sc, vIER, intreg); 537 538 /* wait idle */ 539 do {} while (pmu_intr_state(sc)); 540 541 /* send command */ 542 pmu_send_byte(sc, cmd); 543 544 /* send length if necessary */ 545 if (pm_send_cmd_type[cmd] < 0) { 546 pmu_send_byte(sc, length); 547 } 548 549 for (i = 0; i < length; i++) { 550 pmu_send_byte(sc, in_msg[i]); 551 } 552 553 /* see if there's data to read */ 554 rcv_len = pm_receive_cmd_type[cmd]; 555 if (rcv_len == 0) 556 goto done; 557 558 /* read command */ 559 if (rcv_len == 1) { 560 pmu_read_byte(sc, out_msg); 561 goto done; 562 } else 563 out_msg[0] = cmd; 564 if (rcv_len < 0) { 565 pmu_read_byte(sc, &out_len); 566 rcv_len = out_len + 1; 567 } 568 for (i = 1; i < min(rcv_len, rlen); i++) 569 pmu_read_byte(sc, &out_msg[i]); 570 571done: 572 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90); 573 574 return rcv_len; 575} 576 577 578static u_int 579pmu_poll(device_t dev) 580{ 581 pmu_intr(dev); 582 return (0); 583} 584 585static void 586pmu_in(struct pmu_softc *sc) 587{ 588 uint8_t reg; 589 590 reg = pmu_read_reg(sc, vACR); 591 reg &= ~vSR_OUT; 592 reg |= 0x0c; 593 pmu_write_reg(sc, vACR, reg); 594} 595 596static void 597pmu_out(struct pmu_softc *sc) 598{ 599 uint8_t reg; 600 601 reg = pmu_read_reg(sc, vACR); 602 reg |= vSR_OUT; 603 reg |= 0x0c; 604 pmu_write_reg(sc, vACR, reg); 605} 606 607static void 608pmu_ack_off(struct pmu_softc *sc) 609{ 610 uint8_t reg; 611 612 reg = pmu_read_reg(sc, vBufB); 613 reg &= ~vPB4; 614 pmu_write_reg(sc, vBufB, reg); 615} 616 617static void 618pmu_ack_on(struct pmu_softc *sc) 619{ 620 uint8_t reg; 621 622 reg = pmu_read_reg(sc, vBufB); 623 reg |= vPB4; 624 pmu_write_reg(sc, vBufB, reg); 625} 626 627static void 628pmu_intr(void *arg) 629{ 630 device_t dev; 631 struct pmu_softc *sc; 632 633 unsigned int len; 634 uint8_t resp[16]; 635 uint8_t junk[16]; 636 637 dev = (device_t)arg; 638 sc = device_get_softc(dev); 639 640 mtx_lock(&sc->sc_mutex); 641 642 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */ 643 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp); 644 645 mtx_unlock(&sc->sc_mutex); 646 647 if ((len < 1) || (resp[1] == 0)) { 648 return; 649 } 650 651 if (resp[1] & PMU_INT_ADB) { 652 /* 653 * the PMU will turn off autopolling after each command that 654 * it did not issue, so we assume any but TALK R0 is ours and 655 * re-enable autopoll here whenever we receive an ACK for a 656 * non TR0 command. 657 */ 658 mtx_lock(&sc->sc_mutex); 659 660 if ((resp[2] & 0x0f) != (ADB_COMMAND_TALK << 2)) { 661 if (sc->sc_autopoll) { 662 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, 663 (sc->sc_autopoll >> 8) & 0xff, 664 sc->sc_autopoll & 0xff}; 665 666 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, junk); 667 } 668 } 669 670 mtx_unlock(&sc->sc_mutex); 671 672 adb_receive_raw_packet(sc->adb_bus,resp[1],resp[2], 673 len - 3,&resp[3]); 674 } 675} 676 677static u_int 678pmu_adb_send(device_t dev, u_char command_byte, int len, u_char *data, 679 u_char poll) 680{ 681 struct pmu_softc *sc = device_get_softc(dev); 682 int i,replen; 683 uint8_t packet[16], resp[16]; 684 685 /* construct an ADB command packet and send it */ 686 687 packet[0] = command_byte; 688 689 packet[1] = 0; 690 packet[2] = len; 691 for (i = 0; i < len; i++) 692 packet[i + 3] = data[i]; 693 694 mtx_lock(&sc->sc_mutex); 695 replen = pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp); 696 mtx_unlock(&sc->sc_mutex); 697 698 if (poll) 699 pmu_poll(dev); 700 701 return 0; 702} 703 704static u_int 705pmu_adb_autopoll(device_t dev, uint16_t mask) 706{ 707 struct pmu_softc *sc = device_get_softc(dev); 708 709 /* magical incantation to re-enable autopolling */ 710 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (mask >> 8) & 0xff, mask & 0xff}; 711 uint8_t resp[16]; 712 713 mtx_lock(&sc->sc_mutex); 714 715 if (sc->sc_autopoll == mask) { 716 mtx_unlock(&sc->sc_mutex); 717 return 0; 718 } 719 720 sc->sc_autopoll = mask & 0xffff; 721 722 if (mask) 723 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 724 else 725 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp); 726 727 mtx_unlock(&sc->sc_mutex); 728 729 return 0; 730} 731 732static void 733pmu_set_sleepled(void *xsc, int onoff) 734{ 735 struct pmu_softc *sc = xsc; 736 uint8_t cmd[] = {4, 0, 0}; 737 738 cmd[2] = onoff; 739 740 mtx_lock(&sc->sc_mutex); 741 pmu_send(sc, PMU_SET_SLEEPLED, 3, cmd, 0, NULL); 742 mtx_unlock(&sc->sc_mutex); 743} 744 745static int 746pmu_server_mode(SYSCTL_HANDLER_ARGS) 747{ 748 struct pmu_softc *sc = arg1; 749 750 u_int server_mode = 0; 751 uint8_t getcmd[] = {PMU_PWR_GET_POWERUP_EVENTS}; 752 uint8_t setcmd[] = {0, 0, PMU_PWR_WAKEUP_AC_INSERT}; 753 uint8_t resp[3]; 754 int error, len; 755 756 mtx_lock(&sc->sc_mutex); 757 len = pmu_send(sc, PMU_POWER_EVENTS, 1, getcmd, 3, resp); 758 mtx_unlock(&sc->sc_mutex); 759 760 if (len == 3) 761 server_mode = (resp[2] & PMU_PWR_WAKEUP_AC_INSERT) ? 1 : 0; 762 763 error = sysctl_handle_int(oidp, &server_mode, 0, req); 764 765 if (len != 3) 766 return (EINVAL); 767 768 if (error || !req->newptr) 769 return (error); 770 771 if (server_mode == 1) 772 setcmd[0] = PMU_PWR_SET_POWERUP_EVENTS; 773 else if (server_mode == 0) 774 setcmd[0] = PMU_PWR_CLR_POWERUP_EVENTS; 775 else 776 return (EINVAL); 777 778 setcmd[1] = resp[1]; 779 780 mtx_lock(&sc->sc_mutex); 781 pmu_send(sc, PMU_POWER_EVENTS, 3, setcmd, 2, resp); 782 mtx_unlock(&sc->sc_mutex); 783 784 return (0); 785} 786 787static int 788pmu_query_battery(struct pmu_softc *sc, int batt, struct pmu_battstate *info) 789{ 790 uint8_t reg; 791 uint8_t resp[16]; 792 int len; 793 794 reg = batt + 1; 795 796 mtx_lock(&sc->sc_mutex); 797 len = pmu_send(sc, PMU_SMART_BATTERY_STATE, 1, ®, 16, resp); 798 mtx_unlock(&sc->sc_mutex); 799 800 if (len < 3) 801 return (-1); 802 803 /* All PMU battery info replies share a common header: 804 * Byte 1 Payload Format 805 * Byte 2 Battery Flags 806 */ 807 808 info->state = resp[2]; 809 810 switch (resp[1]) { 811 case 3: 812 case 4: 813 /* 814 * Formats 3 and 4 appear to be the same: 815 * Byte 3 Charge 816 * Byte 4 Max Charge 817 * Byte 5 Current 818 * Byte 6 Voltage 819 */ 820 821 info->charge = resp[3]; 822 info->maxcharge = resp[4]; 823 /* Current can be positive or negative */ 824 info->current = (int8_t)resp[5]; 825 info->voltage = resp[6]; 826 break; 827 case 5: 828 /* 829 * Formats 5 is a wider version of formats 3 and 4 830 * Byte 3-4 Charge 831 * Byte 5-6 Max Charge 832 * Byte 7-8 Current 833 * Byte 9-10 Voltage 834 */ 835 836 info->charge = (resp[3] << 8) | resp[4]; 837 info->maxcharge = (resp[5] << 8) | resp[6]; 838 /* Current can be positive or negative */ 839 info->current = (int16_t)((resp[7] << 8) | resp[8]); 840 info->voltage = (resp[9] << 8) | resp[10]; 841 break; 842 default: 843 device_printf(sc->sc_dev, "Unknown battery info format (%d)!\n", 844 resp[1]); 845 return (-1); 846 } 847 848 return (0); 849} 850 851static int 852pmu_acline_state(SYSCTL_HANDLER_ARGS) 853{ 854 struct pmu_softc *sc; 855 struct pmu_battstate batt; 856 int error, result; 857 858 sc = arg1; 859 860 /* The PMU treats the AC line status as a property of the battery */ 861 error = pmu_query_battery(sc, 0, &batt); 862 863 if (error != 0) 864 return (error); 865 866 result = (batt.state & PMU_PWR_AC_PRESENT) ? 1 : 0; 867 error = sysctl_handle_int(oidp, &result, 0, req); 868 869 return (error); 870} 871 872static int 873pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS) 874{ 875 struct pmu_softc *sc; 876 struct pmu_battstate batt; 877 int error, result; 878 879 sc = arg1; 880 881 error = pmu_query_battery(sc, arg2 & 0x00ff, &batt); 882 883 if (error != 0) 884 return (error); 885 886 switch (arg2 & 0xff00) { 887 case PMU_BATSYSCTL_PRESENT: 888 result = (batt.state & PMU_PWR_BATT_PRESENT) ? 1 : 0; 889 break; 890 case PMU_BATSYSCTL_CHARGING: 891 result = (batt.state & PMU_PWR_BATT_CHARGING) ? 1 : 0; 892 break; 893 case PMU_BATSYSCTL_CHARGE: 894 result = batt.charge; 895 break; 896 case PMU_BATSYSCTL_MAXCHARGE: 897 result = batt.maxcharge; 898 break; 899 case PMU_BATSYSCTL_CURRENT: 900 result = batt.current; 901 break; 902 case PMU_BATSYSCTL_VOLTAGE: 903 result = batt.voltage; 904 break; 905 case PMU_BATSYSCTL_TIME: 906 /* Time remaining until full charge/discharge, in minutes */ 907 908 if (batt.current >= 0) 909 result = (batt.maxcharge - batt.charge) /* mAh */ * 60 910 / batt.current /* mA */; 911 else 912 result = (batt.charge /* mAh */ * 60) 913 / (-batt.current /* mA */); 914 break; 915 case PMU_BATSYSCTL_LIFE: 916 /* Battery charge fraction, in percent */ 917 result = (batt.charge * 100) / batt.maxcharge; 918 break; 919 default: 920 /* This should never happen */ 921 result = -1; 922 }; 923 924 error = sysctl_handle_int(oidp, &result, 0, req); 925 926 return (error); 927} 928 929