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