pmu.c revision 185782
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 185782 2008-12-09 01:01:02Z nwhitehorn $"); 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 void 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_query_battery(struct pmu_softc *sc, int batt, 76 struct pmu_battstate *info); 77static int pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS); 78 79/* 80 * List of battery-related sysctls we might ask for 81 */ 82 83enum { 84 PMU_BATSYSCTL_PRESENT = 1 << 8, 85 PMU_BATSYSCTL_CHARGING = 2 << 8, 86 PMU_BATSYSCTL_CHARGE = 3 << 8, 87 PMU_BATSYSCTL_MAXCHARGE = 4 << 8, 88 PMU_BATSYSCTL_CURRENT = 5 << 8, 89 PMU_BATSYSCTL_VOLTAGE = 6 << 8, 90 PMU_BATSYSCTL_TIME = 7 << 8, 91 PMU_BATSYSCTL_LIFE = 8 << 8 92}; 93 94static device_method_t pmu_methods[] = { 95 /* Device interface */ 96 DEVMETHOD(device_probe, pmu_probe), 97 DEVMETHOD(device_attach, pmu_attach), 98 DEVMETHOD(device_detach, pmu_detach), 99 DEVMETHOD(device_shutdown, bus_generic_shutdown), 100 DEVMETHOD(device_suspend, bus_generic_suspend), 101 DEVMETHOD(device_resume, bus_generic_resume), 102 103 /* bus interface, for ADB root */ 104 DEVMETHOD(bus_print_child, bus_generic_print_child), 105 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 106 107 /* ADB bus interface */ 108 DEVMETHOD(adb_hb_send_raw_packet, pmu_adb_send), 109 DEVMETHOD(adb_hb_controller_poll, pmu_poll), 110 DEVMETHOD(adb_hb_set_autopoll_mask, pmu_adb_autopoll), 111 112 { 0, 0 }, 113}; 114 115static driver_t pmu_driver = { 116 "pmu", 117 pmu_methods, 118 sizeof(struct pmu_softc), 119}; 120 121static devclass_t pmu_devclass; 122 123DRIVER_MODULE(pmu, macio, pmu_driver, pmu_devclass, 0, 0); 124DRIVER_MODULE(adb, pmu, adb_driver, adb_devclass, 0, 0); 125 126static int pmuextint_probe(device_t); 127static int pmuextint_attach(device_t); 128 129static device_method_t pmuextint_methods[] = { 130 /* Device interface */ 131 DEVMETHOD(device_probe, pmuextint_probe), 132 DEVMETHOD(device_attach, pmuextint_attach), 133 134 {0,0} 135}; 136 137static driver_t pmuextint_driver = { 138 "pmuextint", 139 pmuextint_methods, 140 0 141}; 142 143static devclass_t pmuextint_devclass; 144 145DRIVER_MODULE(pmuextint, macgpio, pmuextint_driver, pmuextint_devclass, 0, 0); 146 147/* Make sure uhid is loaded, as it turns off some of the ADB emulation */ 148MODULE_DEPEND(pmu, usb, 1, 1, 1); 149 150static void pmu_intr(void *arg); 151static void pmu_in(struct pmu_softc *sc); 152static void pmu_out(struct pmu_softc *sc); 153static void pmu_ack_on(struct pmu_softc *sc); 154static void pmu_ack_off(struct pmu_softc *sc); 155static int pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, 156 int rlen, uint8_t *out_msg); 157static uint8_t pmu_read_reg(struct pmu_softc *sc, u_int offset); 158static void pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value); 159static int pmu_intr_state(struct pmu_softc *); 160 161/* these values shows that number of data returned after 'send' cmd is sent */ 162static signed char pm_send_cmd_type[] = { 163 -1, -1, -1, -1, -1, -1, -1, -1, 164 -1, -1, -1, -1, -1, -1, -1, -1, 165 0x01, 0x01, -1, -1, -1, -1, -1, -1, 166 0x00, 0x00, -1, -1, -1, -1, -1, 0x00, 167 -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1, 168 0x00, -1, -1, -1, -1, -1, -1, -1, 169 0x04, 0x14, -1, 0x03, -1, -1, -1, -1, 170 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, 171 0x01, 0x01, -1, -1, -1, -1, -1, -1, 172 0x00, 0x00, -1, -1, 0x01, -1, -1, -1, 173 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01, 174 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1, 175 0x02, -1, -1, -1, -1, -1, -1, -1, 176 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, 177 0x01, 0x01, 0x01, -1, -1, -1, -1, -1, 178 0x00, 0x00, -1, -1, -1, -1, 0x04, 0x04, 179 0x04, -1, 0x00, -1, -1, -1, -1, -1, 180 0x00, -1, -1, -1, -1, -1, -1, -1, 181 0x01, 0x02, -1, -1, -1, -1, -1, -1, 182 0x00, 0x00, -1, -1, -1, -1, -1, -1, 183 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1, 184 0x01, 0x01, 0x03, 0x02, -1, -1, -1, -1, 185 -1, -1, -1, -1, -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 0x00, -1, -1, -1, -1, -1, -1, -1, 190 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1, 191 -1, 0x04, 0x00, -1, -1, -1, -1, -1, 192 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00, 193 -1, -1, -1, -1, -1, -1, -1, -1, 194 -1, -1, -1, -1, -1, -1, -1, -1 195}; 196 197/* these values shows that number of data returned after 'receive' cmd is sent */ 198static signed char pm_receive_cmd_type[] = { 199 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 200 -1, -1, -1, -1, -1, -1, -1, -1, 201 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 202 0x02, 0x02, -1, -1, -1, -1, -1, 0x00, 203 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 204 -1, -1, -1, -1, -1, -1, -1, -1, 205 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 206 0x05, 0x15, -1, 0x02, -1, -1, -1, -1, 207 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 208 0x02, 0x02, -1, -1, -1, -1, -1, -1, 209 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 210 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1, 211 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 212 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1, 213 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 214 -1, -1, -1, -1, -1, -1, 0x01, 0x01, 215 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 216 0x06, -1, -1, -1, -1, -1, -1, -1, 217 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 218 0x02, 0x02, -1, -1, -1, -1, -1, -1, 219 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 220 0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1, 221 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 222 -1, -1, -1, -1, -1, -1, -1, -1, 223 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 224 -1, -1, -1, -1, -1, -1, -1, -1, 225 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 226 0x02, 0x02, -1, -1, 0x02, -1, -1, -1, 227 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 228 -1, -1, 0x02, -1, -1, -1, -1, 0x00, 229 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 230 -1, -1, -1, -1, -1, -1, -1, -1, 231}; 232 233/* We only have one of each device, so globals are safe */ 234static device_t pmu = NULL; 235static device_t pmu_extint = NULL; 236 237static int 238pmuextint_probe(device_t dev) 239{ 240 const char *type = ofw_bus_get_type(dev); 241 242 if (strcmp(type, "extint-gpio1") != 0) 243 return (ENXIO); 244 245 device_set_desc(dev, "Apple PMU99 External Interrupt"); 246 return (0); 247} 248 249static int 250pmu_probe(device_t dev) 251{ 252 const char *type = ofw_bus_get_type(dev); 253 254 if (strcmp(type, "via-pmu") != 0) 255 return (ENXIO); 256 257 device_set_desc(dev, "Apple PMU99 Controller"); 258 return (0); 259} 260 261 262static int 263setup_pmu_intr(device_t dev, device_t extint) 264{ 265 struct pmu_softc *sc; 266 sc = device_get_softc(dev); 267 268 sc->sc_irqrid = 0; 269 sc->sc_irq = bus_alloc_resource_any(extint, SYS_RES_IRQ, &sc->sc_irqrid, 270 RF_ACTIVE); 271 if (sc->sc_irq == NULL) { 272 device_printf(dev, "could not allocate interrupt\n"); 273 return (ENXIO); 274 } 275 276 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC | INTR_MPSAFE 277 | INTR_ENTROPY, NULL, pmu_intr, dev, &sc->sc_ih) != 0) { 278 device_printf(dev, "could not setup interrupt\n"); 279 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, 280 sc->sc_irq); 281 return (ENXIO); 282 } 283 284 return (0); 285} 286 287static int 288pmuextint_attach(device_t dev) 289{ 290 pmu_extint = dev; 291 if (pmu) 292 return (setup_pmu_intr(pmu,dev)); 293 294 return (0); 295} 296 297static int 298pmu_attach(device_t dev) 299{ 300 struct pmu_softc *sc; 301 302 int i; 303 uint8_t reg; 304 uint8_t cmd[2] = {2, 0}; 305 uint8_t resp[16]; 306 phandle_t node,child; 307 struct sysctl_ctx_list *ctx; 308 struct sysctl_oid *tree; 309 310 sc = device_get_softc(dev); 311 sc->sc_dev = dev; 312 313 sc->sc_memrid = 0; 314 sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 315 &sc->sc_memrid, RF_ACTIVE); 316 317 mtx_init(&sc->sc_mutex,"pmu",NULL,MTX_DEF | MTX_RECURSE); 318 319 if (sc->sc_memr == NULL) { 320 device_printf(dev, "Could not alloc mem resource!\n"); 321 return (ENXIO); 322 } 323 324 /* 325 * Our interrupt is attached to a GPIO pin. Depending on probe order, 326 * we may not have found it yet. If we haven't, it will find us, and 327 * attach our interrupt then. 328 */ 329 pmu = dev; 330 if (pmu_extint != NULL) { 331 if (setup_pmu_intr(dev,pmu_extint) != 0) 332 return (ENXIO); 333 } 334 335 sc->sc_autopoll = 0; 336 sc->sc_batteries = 0; 337 sc->adb_bus = NULL; 338 sc->sc_leddev = NULL; 339 340 /* Init PMU */ 341 342 reg = PMU_INT_TICK | PMU_INT_ADB | PMU_INT_PCEJECT | PMU_INT_SNDBRT; 343 reg |= PMU_INT_BATTERY; 344 reg |= PMU_INT_ENVIRONMENT; 345 pmu_send(sc, PMU_SET_IMASK, 1, ®, 16, resp); 346 347 pmu_write_reg(sc, vIER, 0x90); /* make sure VIA interrupts are on */ 348 349 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp); 350 pmu_send(sc, PMU_GET_VERSION, 1, cmd, 16, resp); 351 352 /* Initialize child buses (ADB) */ 353 node = ofw_bus_get_node(dev); 354 355 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 356 char name[32]; 357 358 memset(name, 0, sizeof(name)); 359 OF_getprop(child, "name", name, sizeof(name)); 360 361 if (bootverbose) 362 device_printf(dev, "PMU child <%s>\n",name); 363 364 if (strncmp(name, "adb", 4) == 0) { 365 sc->adb_bus = device_add_child(dev,"adb",-1); 366 } 367 368 if (strncmp(name, "power-mgt", 9) == 0) { 369 uint32_t prim_info[9]; 370 371 if (OF_getprop(child, "prim-info", prim_info, 372 sizeof(prim_info)) >= 7) 373 sc->sc_batteries = (prim_info[6] >> 16) & 0xff; 374 375 if (bootverbose && sc->sc_batteries > 0) 376 device_printf(dev, "%d batteries detected\n", 377 sc->sc_batteries); 378 } 379 } 380 381 /* 382 * Set up sysctls 383 */ 384 385 ctx = device_get_sysctl_ctx(dev); 386 tree = device_get_sysctl_tree(dev); 387 388 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 389 "server_mode", CTLTYPE_INT | CTLFLAG_RW, sc, 0, 390 pmu_server_mode, "I", "Enable reboot after power failure"); 391 392 if (sc->sc_batteries > 0) { 393 struct sysctl_oid *oid, *battroot; 394 char battnum[2]; 395 396 battroot = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 397 "batteries", CTLFLAG_RD, 0, "Battery Information"); 398 399 for (i = 0; i < sc->sc_batteries; i++) { 400 battnum[0] = i + '0'; 401 battnum[1] = '\0'; 402 403 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(battroot), 404 OID_AUTO, battnum, CTLFLAG_RD, 0, 405 "Battery Information"); 406 407 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 408 "present", CTLTYPE_INT | CTLFLAG_RD, sc, 409 PMU_BATSYSCTL_PRESENT | i, pmu_battquery_sysctl, 410 "I", "Battery present"); 411 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 412 "charging", CTLTYPE_INT | CTLFLAG_RD, sc, 413 PMU_BATSYSCTL_CHARGING | i, pmu_battquery_sysctl, 414 "I", "Battery charging"); 415 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 416 "charge", CTLTYPE_INT | CTLFLAG_RD, sc, 417 PMU_BATSYSCTL_CHARGE | i, pmu_battquery_sysctl, 418 "I", "Battery charge (mAh)"); 419 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 420 "maxcharge", CTLTYPE_INT | CTLFLAG_RD, sc, 421 PMU_BATSYSCTL_MAXCHARGE | i, pmu_battquery_sysctl, 422 "I", "Maximum battery capacity (mAh)"); 423 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 424 "rate", CTLTYPE_INT | CTLFLAG_RD, sc, 425 PMU_BATSYSCTL_CURRENT | i, pmu_battquery_sysctl, 426 "I", "Battery discharge rate (mA)"); 427 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 428 "voltage", CTLTYPE_INT | CTLFLAG_RD, sc, 429 PMU_BATSYSCTL_VOLTAGE | i, pmu_battquery_sysctl, 430 "I", "Battery voltage (mV)"); 431 432 /* Knobs for mental compatibility with ACPI */ 433 434 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 435 "time", CTLTYPE_INT | CTLFLAG_RD, sc, 436 PMU_BATSYSCTL_TIME | i, pmu_battquery_sysctl, 437 "I", "Time Remaining (minutes)"); 438 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 439 "life", CTLTYPE_INT | CTLFLAG_RD, sc, 440 PMU_BATSYSCTL_LIFE | i, pmu_battquery_sysctl, 441 "I", "Capacity remaining (percent)"); 442 } 443 } 444 445 /* 446 * Set up LED interface 447 */ 448 449 sc->sc_leddev = led_create(pmu_set_sleepled, sc, "sleepled"); 450 451 return (bus_generic_attach(dev)); 452} 453 454static int 455pmu_detach(device_t dev) 456{ 457 struct pmu_softc *sc; 458 459 sc = device_get_softc(dev); 460 461 if (sc->sc_leddev != NULL) 462 led_destroy(sc->sc_leddev); 463 464 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih); 465 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, sc->sc_irq); 466 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid, sc->sc_memr); 467 mtx_destroy(&sc->sc_mutex); 468 469 return (bus_generic_detach(dev)); 470} 471 472static uint8_t 473pmu_read_reg(struct pmu_softc *sc, u_int offset) 474{ 475 return (bus_read_1(sc->sc_memr, offset)); 476} 477 478static void 479pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value) 480{ 481 bus_write_1(sc->sc_memr, offset, value); 482} 483 484static int 485pmu_send_byte(struct pmu_softc *sc, uint8_t data) 486{ 487 488 pmu_out(sc); 489 pmu_write_reg(sc, vSR, data); 490 pmu_ack_off(sc); 491 /* wait for intr to come up */ 492 /* XXX should add a timeout and bail if it expires */ 493 do {} while (pmu_intr_state(sc) == 0); 494 pmu_ack_on(sc); 495 do {} while (pmu_intr_state(sc)); 496 pmu_ack_on(sc); 497 return 0; 498} 499 500static inline int 501pmu_read_byte(struct pmu_softc *sc, uint8_t *data) 502{ 503 volatile uint8_t scratch; 504 pmu_in(sc); 505 scratch = pmu_read_reg(sc, vSR); 506 pmu_ack_off(sc); 507 /* wait for intr to come up */ 508 do {} while (pmu_intr_state(sc) == 0); 509 pmu_ack_on(sc); 510 do {} while (pmu_intr_state(sc)); 511 *data = pmu_read_reg(sc, vSR); 512 return 0; 513} 514 515static int 516pmu_intr_state(struct pmu_softc *sc) 517{ 518 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0); 519} 520 521static int 522pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen, 523 uint8_t *out_msg) 524{ 525 struct pmu_softc *sc = cookie; 526 int i, rcv_len = -1; 527 uint8_t out_len, intreg; 528 529 intreg = pmu_read_reg(sc, vIER); 530 intreg &= 0x10; 531 pmu_write_reg(sc, vIER, intreg); 532 533 /* wait idle */ 534 do {} while (pmu_intr_state(sc)); 535 536 /* send command */ 537 pmu_send_byte(sc, cmd); 538 539 /* send length if necessary */ 540 if (pm_send_cmd_type[cmd] < 0) { 541 pmu_send_byte(sc, length); 542 } 543 544 for (i = 0; i < length; i++) { 545 pmu_send_byte(sc, in_msg[i]); 546 } 547 548 /* see if there's data to read */ 549 rcv_len = pm_receive_cmd_type[cmd]; 550 if (rcv_len == 0) 551 goto done; 552 553 /* read command */ 554 if (rcv_len == 1) { 555 pmu_read_byte(sc, out_msg); 556 goto done; 557 } else 558 out_msg[0] = cmd; 559 if (rcv_len < 0) { 560 pmu_read_byte(sc, &out_len); 561 rcv_len = out_len + 1; 562 } 563 for (i = 1; i < min(rcv_len, rlen); i++) 564 pmu_read_byte(sc, &out_msg[i]); 565 566done: 567 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90); 568 569 return rcv_len; 570} 571 572 573static void 574pmu_poll(device_t dev) 575{ 576 pmu_intr(dev); 577} 578 579static void 580pmu_in(struct pmu_softc *sc) 581{ 582 uint8_t reg; 583 584 reg = pmu_read_reg(sc, vACR); 585 reg &= ~vSR_OUT; 586 reg |= 0x0c; 587 pmu_write_reg(sc, vACR, reg); 588} 589 590static void 591pmu_out(struct pmu_softc *sc) 592{ 593 uint8_t reg; 594 595 reg = pmu_read_reg(sc, vACR); 596 reg |= vSR_OUT; 597 reg |= 0x0c; 598 pmu_write_reg(sc, vACR, reg); 599} 600 601static void 602pmu_ack_off(struct pmu_softc *sc) 603{ 604 uint8_t reg; 605 606 reg = pmu_read_reg(sc, vBufB); 607 reg &= ~vPB4; 608 pmu_write_reg(sc, vBufB, reg); 609} 610 611static void 612pmu_ack_on(struct pmu_softc *sc) 613{ 614 uint8_t reg; 615 616 reg = pmu_read_reg(sc, vBufB); 617 reg |= vPB4; 618 pmu_write_reg(sc, vBufB, reg); 619} 620 621static void 622pmu_intr(void *arg) 623{ 624 device_t dev; 625 struct pmu_softc *sc; 626 627 unsigned int len; 628 uint8_t resp[16]; 629 uint8_t junk[16]; 630 631 dev = (device_t)arg; 632 sc = device_get_softc(dev); 633 634 mtx_lock(&sc->sc_mutex); 635 636 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */ 637 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp); 638 639 mtx_unlock(&sc->sc_mutex); 640 641 if ((len < 1) || (resp[1] == 0)) { 642 return; 643 } 644 645 if (resp[1] & PMU_INT_ADB) { 646 /* 647 * the PMU will turn off autopolling after each command that 648 * it did not issue, so we assume any but TALK R0 is ours and 649 * re-enable autopoll here whenever we receive an ACK for a 650 * non TR0 command. 651 */ 652 mtx_lock(&sc->sc_mutex); 653 654 if ((resp[2] & 0x0f) != (ADB_COMMAND_TALK << 2)) { 655 if (sc->sc_autopoll) { 656 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, 657 (sc->sc_autopoll >> 8) & 0xff, 658 sc->sc_autopoll & 0xff}; 659 660 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, junk); 661 } 662 } 663 664 mtx_unlock(&sc->sc_mutex); 665 666 adb_receive_raw_packet(sc->adb_bus,resp[1],resp[2], 667 len - 3,&resp[3]); 668 } 669} 670 671static u_int 672pmu_adb_send(device_t dev, u_char command_byte, int len, u_char *data, 673 u_char poll) 674{ 675 struct pmu_softc *sc = device_get_softc(dev); 676 int i,replen; 677 uint8_t packet[16], resp[16]; 678 679 /* construct an ADB command packet and send it */ 680 681 packet[0] = command_byte; 682 683 packet[1] = 0; 684 packet[2] = len; 685 for (i = 0; i < len; i++) 686 packet[i + 3] = data[i]; 687 688 mtx_lock(&sc->sc_mutex); 689 replen = pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp); 690 mtx_unlock(&sc->sc_mutex); 691 692 if (poll) 693 pmu_poll(dev); 694 695 return 0; 696} 697 698static u_int 699pmu_adb_autopoll(device_t dev, uint16_t mask) 700{ 701 struct pmu_softc *sc = device_get_softc(dev); 702 703 /* magical incantation to re-enable autopolling */ 704 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (mask >> 8) & 0xff, mask & 0xff}; 705 uint8_t resp[16]; 706 707 mtx_lock(&sc->sc_mutex); 708 709 if (sc->sc_autopoll == mask) { 710 mtx_unlock(&sc->sc_mutex); 711 return 0; 712 } 713 714 sc->sc_autopoll = mask & 0xffff; 715 716 if (mask) 717 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 718 else 719 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp); 720 721 mtx_unlock(&sc->sc_mutex); 722 723 return 0; 724} 725 726static void 727pmu_set_sleepled(void *xsc, int onoff) 728{ 729 struct pmu_softc *sc = xsc; 730 uint8_t cmd[] = {4, 0, 0}; 731 732 cmd[2] = onoff; 733 734 mtx_lock(&sc->sc_mutex); 735 pmu_send(sc, PMU_SET_SLEEPLED, 3, cmd, 0, NULL); 736 mtx_unlock(&sc->sc_mutex); 737} 738 739static int 740pmu_server_mode(SYSCTL_HANDLER_ARGS) 741{ 742 struct pmu_softc *sc = arg1; 743 744 u_int server_mode = 0; 745 uint8_t getcmd[] = {PMU_PWR_GET_POWERUP_EVENTS}; 746 uint8_t setcmd[] = {0, 0, PMU_PWR_WAKEUP_AC_INSERT}; 747 uint8_t resp[3]; 748 int error, len; 749 750 mtx_lock(&sc->sc_mutex); 751 len = pmu_send(sc, PMU_POWER_EVENTS, 1, getcmd, 3, resp); 752 mtx_unlock(&sc->sc_mutex); 753 754 if (len == 3) 755 server_mode = (resp[2] & PMU_PWR_WAKEUP_AC_INSERT) ? 1 : 0; 756 757 error = sysctl_handle_int(oidp, &server_mode, 0, req); 758 759 if (len != 3) 760 return (EINVAL); 761 762 if (error || !req->newptr) 763 return (error); 764 765 if (server_mode == 1) 766 setcmd[0] = PMU_PWR_SET_POWERUP_EVENTS; 767 else if (server_mode == 0) 768 setcmd[0] = PMU_PWR_CLR_POWERUP_EVENTS; 769 else 770 return (EINVAL); 771 772 setcmd[1] = resp[1]; 773 774 mtx_lock(&sc->sc_mutex); 775 pmu_send(sc, PMU_POWER_EVENTS, 3, setcmd, 2, resp); 776 mtx_unlock(&sc->sc_mutex); 777 778 return (0); 779} 780 781static int 782pmu_query_battery(struct pmu_softc *sc, int batt, struct pmu_battstate *info) 783{ 784 uint8_t reg; 785 uint8_t resp[16]; 786 int len; 787 788 reg = batt + 1; 789 790 mtx_lock(&sc->sc_mutex); 791 len = pmu_send(sc, PMU_SMART_BATTERY_STATE, 1, ®, 16, resp); 792 mtx_unlock(&sc->sc_mutex); 793 794 if (len < 3) 795 return (-1); 796 797 /* All PMU battery info replies share a common header: 798 * Byte 1 Payload Format 799 * Byte 2 Battery Flags 800 */ 801 802 info->state = resp[2]; 803 804 switch (resp[1]) { 805 case 3: 806 case 4: 807 /* 808 * Formats 3 and 4 appear to be the same: 809 * Byte 3 Charge 810 * Byte 4 Max Charge 811 * Byte 5 Current 812 * Byte 6 Voltage 813 */ 814 815 info->charge = resp[3]; 816 info->maxcharge = resp[4]; 817 /* Current can be positive or negative */ 818 info->current = (int8_t)resp[5]; 819 info->voltage = resp[6]; 820 break; 821 case 5: 822 /* 823 * Formats 5 is a wider version of formats 3 and 4 824 * Byte 3-4 Charge 825 * Byte 5-6 Max Charge 826 * Byte 7-8 Current 827 * Byte 9-10 Voltage 828 */ 829 830 info->charge = (resp[3] << 8) | resp[4]; 831 info->maxcharge = (resp[5] << 8) | resp[6]; 832 /* Current can be positive or negative */ 833 info->current = (int16_t)((resp[7] << 8) | resp[8]); 834 info->voltage = (resp[9] << 8) | resp[10]; 835 break; 836 default: 837 device_printf(sc->sc_dev, "Unknown battery info format (%d)!\n", 838 resp[1]); 839 return (-1); 840 } 841 842 return (0); 843} 844 845static int 846pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS) 847{ 848 struct pmu_softc *sc; 849 struct pmu_battstate batt; 850 int error, result; 851 852 sc = arg1; 853 854 error = pmu_query_battery(sc, arg2 & 0x00ff, &batt); 855 856 if (error != 0) 857 return (error); 858 859 switch (arg2 & 0xff00) { 860 case PMU_BATSYSCTL_PRESENT: 861 result = (batt.state & PMU_PWR_BATT_PRESENT) ? 1 : 0; 862 break; 863 case PMU_BATSYSCTL_CHARGING: 864 result = (batt.state & PMU_PWR_BATT_CHARGING) ? 1 : 0; 865 break; 866 case PMU_BATSYSCTL_CHARGE: 867 result = batt.charge; 868 break; 869 case PMU_BATSYSCTL_MAXCHARGE: 870 result = batt.maxcharge; 871 break; 872 case PMU_BATSYSCTL_CURRENT: 873 result = batt.current; 874 break; 875 case PMU_BATSYSCTL_VOLTAGE: 876 result = batt.voltage; 877 break; 878 case PMU_BATSYSCTL_TIME: 879 /* Time remaining until full charge/discharge, in minutes */ 880 881 if (batt.current >= 0) 882 result = (batt.maxcharge - batt.charge) /* mAh */ * 60 883 / batt.current /* mA */; 884 else 885 result = (batt.charge /* mAh */ * 60) 886 / (-batt.current /* mA */); 887 break; 888 case PMU_BATSYSCTL_LIFE: 889 /* Battery charge fraction, in percent */ 890 result = (batt.charge * 100) / batt.maxcharge; 891 break; 892 default: 893 /* This should never happen */ 894 result = -1; 895 }; 896 897 error = sysctl_handle_int(oidp, &result, 0, req); 898 899 return (error); 900} 901 902