1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2006 Michael Lorenz 5 * Copyright 2008 by Nathan Whitehorn 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/module.h> 37 #include <sys/bus.h> 38 #include <sys/conf.h> 39 #include <sys/kernel.h> 40 #include <sys/kthread.h> 41 #include <sys/clock.h> 42 #include <sys/proc.h> 43 #include <sys/reboot.h> 44 #include <sys/sysctl.h> 45 46 #include <dev/ofw/ofw_bus.h> 47 #include <dev/ofw/openfirm.h> 48 #include <dev/led/led.h> 49 50 #include <machine/_inttypes.h> 51 #include <machine/bus.h> 52 #include <machine/cpu.h> 53 #include <machine/hid.h> 54 #include <machine/intr_machdep.h> 55 #include <machine/md_var.h> 56 #include <machine/pcb.h> 57 #include <machine/pio.h> 58 #include <machine/resource.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 */ 79 static int pmu_probe(device_t); 80 static int pmu_attach(device_t); 81 static int pmu_detach(device_t); 82 83 /* 84 * Clock interface 85 */ 86 static int pmu_gettime(device_t dev, struct timespec *ts); 87 static int pmu_settime(device_t dev, struct timespec *ts); 88 89 /* 90 * ADB Interface 91 */ 92 93 static u_int pmu_adb_send(device_t dev, u_char command_byte, int len, 94 u_char *data, u_char poll); 95 static u_int pmu_adb_autopoll(device_t dev, uint16_t mask); 96 static u_int pmu_poll(device_t dev); 97 98 /* 99 * Power interface 100 */ 101 102 static void pmu_shutdown(void *xsc, int howto); 103 static void pmu_set_sleepled(void *xsc, int onoff); 104 static int pmu_server_mode(SYSCTL_HANDLER_ARGS); 105 static int pmu_acline_state(SYSCTL_HANDLER_ARGS); 106 static int pmu_query_battery(struct pmu_softc *sc, int batt, 107 struct pmu_battstate *info); 108 static int pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS); 109 static int pmu_battmon(SYSCTL_HANDLER_ARGS); 110 static void pmu_battquery_proc(void); 111 static void pmu_battery_notify(struct pmu_battstate *batt, 112 struct pmu_battstate *old); 113 114 /* 115 * List of battery-related sysctls we might ask for 116 */ 117 118 enum { 119 PMU_BATSYSCTL_PRESENT = 1 << 8, 120 PMU_BATSYSCTL_CHARGING = 2 << 8, 121 PMU_BATSYSCTL_CHARGE = 3 << 8, 122 PMU_BATSYSCTL_MAXCHARGE = 4 << 8, 123 PMU_BATSYSCTL_CURRENT = 5 << 8, 124 PMU_BATSYSCTL_VOLTAGE = 6 << 8, 125 PMU_BATSYSCTL_TIME = 7 << 8, 126 PMU_BATSYSCTL_LIFE = 8 << 8 127 }; 128 129 static device_method_t pmu_methods[] = { 130 /* Device interface */ 131 DEVMETHOD(device_probe, pmu_probe), 132 DEVMETHOD(device_attach, pmu_attach), 133 DEVMETHOD(device_detach, pmu_detach), 134 DEVMETHOD(device_shutdown, bus_generic_shutdown), 135 136 /* ADB bus interface */ 137 DEVMETHOD(adb_hb_send_raw_packet, pmu_adb_send), 138 DEVMETHOD(adb_hb_controller_poll, pmu_poll), 139 DEVMETHOD(adb_hb_set_autopoll_mask, pmu_adb_autopoll), 140 141 /* Clock interface */ 142 DEVMETHOD(clock_gettime, pmu_gettime), 143 DEVMETHOD(clock_settime, pmu_settime), 144 145 DEVMETHOD_END 146 }; 147 148 static driver_t pmu_driver = { 149 "pmu", 150 pmu_methods, 151 sizeof(struct pmu_softc), 152 }; 153 154 static devclass_t pmu_devclass; 155 156 DRIVER_MODULE(pmu, macio, pmu_driver, pmu_devclass, 0, 0); 157 DRIVER_MODULE(adb, pmu, adb_driver, adb_devclass, 0, 0); 158 159 static int pmuextint_probe(device_t); 160 static int pmuextint_attach(device_t); 161 162 static device_method_t pmuextint_methods[] = { 163 /* Device interface */ 164 DEVMETHOD(device_probe, pmuextint_probe), 165 DEVMETHOD(device_attach, pmuextint_attach), 166 167 {0,0} 168 }; 169 170 static driver_t pmuextint_driver = { 171 "pmuextint", 172 pmuextint_methods, 173 0 174 }; 175 176 static devclass_t pmuextint_devclass; 177 178 DRIVER_MODULE(pmuextint, macgpio, pmuextint_driver, pmuextint_devclass, 0, 0); 179 180 /* Make sure uhid is loaded, as it turns off some of the ADB emulation */ 181 MODULE_DEPEND(pmu, usb, 1, 1, 1); 182 183 static void pmu_intr(void *arg); 184 static void pmu_in(struct pmu_softc *sc); 185 static void pmu_out(struct pmu_softc *sc); 186 static void pmu_ack_on(struct pmu_softc *sc); 187 static void pmu_ack_off(struct pmu_softc *sc); 188 static int pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, 189 int rlen, uint8_t *out_msg); 190 static uint8_t pmu_read_reg(struct pmu_softc *sc, u_int offset); 191 static void pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value); 192 static int pmu_intr_state(struct pmu_softc *); 193 194 /* these values shows that number of data returned after 'send' cmd is sent */ 195 static signed char pm_send_cmd_type[] = { 196 -1, -1, -1, -1, -1, -1, -1, -1, 197 -1, -1, -1, -1, -1, -1, -1, -1, 198 0x01, 0x01, -1, -1, -1, -1, -1, -1, 199 0x00, 0x00, -1, -1, -1, -1, -1, 0x00, 200 -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1, 201 0x00, -1, -1, -1, -1, -1, -1, -1, 202 0x04, 0x14, -1, 0x03, -1, -1, -1, -1, 203 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, 204 0x01, 0x01, -1, -1, -1, -1, -1, -1, 205 0x00, 0x00, -1, -1, 0x01, -1, -1, -1, 206 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01, 207 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1, 208 0x02, -1, -1, -1, -1, -1, -1, -1, 209 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, 210 0x01, 0x01, 0x01, -1, -1, -1, -1, -1, 211 0x00, 0x00, -1, -1, -1, 0x05, 0x04, 0x04, 212 0x04, -1, 0x00, -1, -1, -1, -1, -1, 213 0x00, -1, -1, -1, -1, -1, -1, -1, 214 0x01, 0x02, -1, -1, -1, -1, -1, -1, 215 0x00, 0x00, -1, -1, -1, -1, -1, -1, 216 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1, 217 0x01, 0x01, 0x03, 0x02, -1, -1, -1, -1, 218 -1, -1, -1, -1, -1, -1, -1, -1, 219 -1, -1, -1, -1, -1, -1, -1, -1, 220 -1, -1, -1, -1, -1, -1, -1, -1, 221 -1, -1, -1, -1, -1, -1, -1, -1, 222 0x00, -1, -1, -1, -1, -1, -1, -1, 223 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1, 224 -1, 0x04, 0x00, -1, -1, -1, -1, -1, 225 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00, 226 -1, -1, -1, -1, -1, -1, -1, -1, 227 -1, -1, -1, -1, -1, -1, -1, -1 228 }; 229 230 /* these values shows that number of data returned after 'receive' cmd is sent */ 231 static signed char pm_receive_cmd_type[] = { 232 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 233 -1, -1, -1, -1, -1, -1, -1, -1, 234 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 235 0x02, 0x02, -1, -1, -1, -1, -1, 0x00, 236 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 237 -1, -1, -1, -1, -1, -1, -1, -1, 238 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 239 0x05, 0x15, -1, 0x02, -1, -1, -1, -1, 240 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 241 0x02, 0x02, -1, -1, -1, -1, -1, -1, 242 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 243 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1, 244 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 245 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1, 246 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 247 -1, -1, -1, -1, -1, 0x01, 0x01, 0x01, 248 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 249 0x06, -1, -1, -1, -1, -1, -1, -1, 250 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 251 0x02, 0x02, -1, -1, -1, -1, -1, -1, 252 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 253 0x02, 0x00, 0x00, 0x00, -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 -1, -1, -1, -1, -1, -1, -1, -1, 258 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 259 0x02, 0x02, -1, -1, 0x02, -1, -1, -1, 260 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 261 -1, -1, 0x02, -1, -1, -1, -1, 0x00, 262 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 263 -1, -1, -1, -1, -1, -1, -1, -1, 264 }; 265 266 static int pmu_battmon_enabled = 1; 267 static struct proc *pmubattproc; 268 static struct kproc_desc pmu_batt_kp = { 269 "pmu_batt", 270 pmu_battquery_proc, 271 &pmubattproc 272 }; 273 274 /* We only have one of each device, so globals are safe */ 275 static device_t pmu = NULL; 276 static device_t pmu_extint = NULL; 277 278 static int 279 pmuextint_probe(device_t dev) 280 { 281 const char *type = ofw_bus_get_type(dev); 282 283 if (strcmp(type, "extint-gpio1") != 0) 284 return (ENXIO); 285 286 device_set_desc(dev, "Apple PMU99 External Interrupt"); 287 return (0); 288 } 289 290 static int 291 pmu_probe(device_t dev) 292 { 293 const char *type = ofw_bus_get_type(dev); 294 295 if (strcmp(type, "via-pmu") != 0) 296 return (ENXIO); 297 298 device_set_desc(dev, "Apple PMU99 Controller"); 299 return (0); 300 } 301 302 303 static int 304 setup_pmu_intr(device_t dev, device_t extint) 305 { 306 struct pmu_softc *sc; 307 sc = device_get_softc(dev); 308 309 sc->sc_irqrid = 0; 310 sc->sc_irq = bus_alloc_resource_any(extint, SYS_RES_IRQ, &sc->sc_irqrid, 311 RF_ACTIVE); 312 if (sc->sc_irq == NULL) { 313 device_printf(dev, "could not allocate interrupt\n"); 314 return (ENXIO); 315 } 316 317 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC | INTR_MPSAFE 318 | INTR_ENTROPY, NULL, pmu_intr, dev, &sc->sc_ih) != 0) { 319 device_printf(dev, "could not setup interrupt\n"); 320 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, 321 sc->sc_irq); 322 return (ENXIO); 323 } 324 325 return (0); 326 } 327 328 static int 329 pmuextint_attach(device_t dev) 330 { 331 pmu_extint = dev; 332 if (pmu) 333 return (setup_pmu_intr(pmu,dev)); 334 335 return (0); 336 } 337 338 static int 339 pmu_attach(device_t dev) 340 { 341 struct pmu_softc *sc; 342 343 int i; 344 uint8_t reg; 345 uint8_t cmd[2] = {2, 0}; 346 uint8_t resp[16]; 347 phandle_t node,child; 348 struct sysctl_ctx_list *ctx; 349 struct sysctl_oid *tree; 350 351 sc = device_get_softc(dev); 352 sc->sc_dev = dev; 353 354 sc->sc_memrid = 0; 355 sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 356 &sc->sc_memrid, RF_ACTIVE); 357 358 mtx_init(&sc->sc_mutex,"pmu",NULL,MTX_DEF | MTX_RECURSE); 359 360 if (sc->sc_memr == NULL) { 361 device_printf(dev, "Could not alloc mem resource!\n"); 362 return (ENXIO); 363 } 364 365 /* 366 * Our interrupt is attached to a GPIO pin. Depending on probe order, 367 * we may not have found it yet. If we haven't, it will find us, and 368 * attach our interrupt then. 369 */ 370 pmu = dev; 371 if (pmu_extint != NULL) { 372 if (setup_pmu_intr(dev,pmu_extint) != 0) 373 return (ENXIO); 374 } 375 376 sc->sc_autopoll = 0; 377 sc->sc_batteries = 0; 378 sc->adb_bus = NULL; 379 sc->sc_leddev = NULL; 380 381 /* Init PMU */ 382 383 pmu_write_reg(sc, vBufB, pmu_read_reg(sc, vBufB) | vPB4); 384 pmu_write_reg(sc, vDirB, (pmu_read_reg(sc, vDirB) | vPB4) & ~vPB3); 385 386 reg = PMU_DEFAULTS; 387 pmu_send(sc, PMU_SET_IMASK, 1, ®, 16, resp); 388 389 pmu_write_reg(sc, vIER, 0x94); /* make sure VIA interrupts are on */ 390 391 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp); 392 pmu_send(sc, PMU_GET_VERSION, 0, cmd, 16, resp); 393 394 /* Initialize child buses (ADB) */ 395 node = ofw_bus_get_node(dev); 396 397 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 398 char name[32]; 399 400 memset(name, 0, sizeof(name)); 401 OF_getprop(child, "name", name, sizeof(name)); 402 403 if (bootverbose) 404 device_printf(dev, "PMU child <%s>\n",name); 405 406 if (strncmp(name, "adb", 4) == 0) { 407 sc->adb_bus = device_add_child(dev,"adb",-1); 408 } 409 410 if (strncmp(name, "power-mgt", 9) == 0) { 411 uint32_t prim_info[9]; 412 413 if (OF_getprop(child, "prim-info", prim_info, 414 sizeof(prim_info)) >= 7) 415 sc->sc_batteries = (prim_info[6] >> 16) & 0xff; 416 417 if (bootverbose && sc->sc_batteries > 0) 418 device_printf(dev, "%d batteries detected\n", 419 sc->sc_batteries); 420 } 421 } 422 423 /* 424 * Set up sysctls 425 */ 426 427 ctx = device_get_sysctl_ctx(dev); 428 tree = device_get_sysctl_tree(dev); 429 430 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 431 "server_mode", CTLTYPE_INT | CTLFLAG_RW, sc, 0, 432 pmu_server_mode, "I", "Enable reboot after power failure"); 433 434 if (sc->sc_batteries > 0) { 435 struct sysctl_oid *oid, *battroot; 436 char battnum[2]; 437 438 /* Only start the battery monitor if we have a battery. */ 439 kproc_start(&pmu_batt_kp); 440 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 441 "monitor_batteries", CTLTYPE_INT | CTLFLAG_RW, sc, 0, 442 pmu_battmon, "I", "Post battery events to devd"); 443 444 445 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 446 "acline", CTLTYPE_INT | CTLFLAG_RD, sc, 0, 447 pmu_acline_state, "I", "AC Line Status"); 448 449 battroot = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 450 "batteries", CTLFLAG_RD, 0, "Battery Information"); 451 452 for (i = 0; i < sc->sc_batteries; i++) { 453 battnum[0] = i + '0'; 454 battnum[1] = '\0'; 455 456 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(battroot), 457 OID_AUTO, battnum, CTLFLAG_RD, 0, 458 "Battery Information"); 459 460 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 461 "present", CTLTYPE_INT | CTLFLAG_RD, sc, 462 PMU_BATSYSCTL_PRESENT | i, pmu_battquery_sysctl, 463 "I", "Battery present"); 464 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 465 "charging", CTLTYPE_INT | CTLFLAG_RD, sc, 466 PMU_BATSYSCTL_CHARGING | i, pmu_battquery_sysctl, 467 "I", "Battery charging"); 468 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 469 "charge", CTLTYPE_INT | CTLFLAG_RD, sc, 470 PMU_BATSYSCTL_CHARGE | i, pmu_battquery_sysctl, 471 "I", "Battery charge (mAh)"); 472 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 473 "maxcharge", CTLTYPE_INT | CTLFLAG_RD, sc, 474 PMU_BATSYSCTL_MAXCHARGE | i, pmu_battquery_sysctl, 475 "I", "Maximum battery capacity (mAh)"); 476 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 477 "rate", CTLTYPE_INT | CTLFLAG_RD, sc, 478 PMU_BATSYSCTL_CURRENT | i, pmu_battquery_sysctl, 479 "I", "Battery discharge rate (mA)"); 480 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 481 "voltage", CTLTYPE_INT | CTLFLAG_RD, sc, 482 PMU_BATSYSCTL_VOLTAGE | i, pmu_battquery_sysctl, 483 "I", "Battery voltage (mV)"); 484 485 /* Knobs for mental compatibility with ACPI */ 486 487 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 488 "time", CTLTYPE_INT | CTLFLAG_RD, sc, 489 PMU_BATSYSCTL_TIME | i, pmu_battquery_sysctl, 490 "I", "Time Remaining (minutes)"); 491 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, 492 "life", CTLTYPE_INT | CTLFLAG_RD, sc, 493 PMU_BATSYSCTL_LIFE | i, pmu_battquery_sysctl, 494 "I", "Capacity remaining (percent)"); 495 } 496 } 497 498 /* 499 * Set up LED interface 500 */ 501 502 sc->sc_leddev = led_create(pmu_set_sleepled, sc, "sleepled"); 503 504 /* 505 * Register RTC 506 */ 507 508 clock_register(dev, 1000); 509 510 /* 511 * Register power control handler 512 */ 513 EVENTHANDLER_REGISTER(shutdown_final, pmu_shutdown, sc, 514 SHUTDOWN_PRI_LAST); 515 516 return (bus_generic_attach(dev)); 517 } 518 519 static int 520 pmu_detach(device_t dev) 521 { 522 struct pmu_softc *sc; 523 524 sc = device_get_softc(dev); 525 526 if (sc->sc_leddev != NULL) 527 led_destroy(sc->sc_leddev); 528 529 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih); 530 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, sc->sc_irq); 531 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid, sc->sc_memr); 532 mtx_destroy(&sc->sc_mutex); 533 534 return (bus_generic_detach(dev)); 535 } 536 537 static uint8_t 538 pmu_read_reg(struct pmu_softc *sc, u_int offset) 539 { 540 return (bus_read_1(sc->sc_memr, offset)); 541 } 542 543 static void 544 pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value) 545 { 546 bus_write_1(sc->sc_memr, offset, value); 547 } 548 549 static int 550 pmu_send_byte(struct pmu_softc *sc, uint8_t data) 551 { 552 553 pmu_out(sc); 554 pmu_write_reg(sc, vSR, data); 555 pmu_ack_off(sc); 556 /* wait for intr to come up */ 557 /* XXX should add a timeout and bail if it expires */ 558 do {} while (pmu_intr_state(sc) == 0); 559 pmu_ack_on(sc); 560 do {} while (pmu_intr_state(sc)); 561 pmu_ack_on(sc); 562 return 0; 563 } 564 565 static inline int 566 pmu_read_byte(struct pmu_softc *sc, uint8_t *data) 567 { 568 volatile uint8_t scratch; 569 pmu_in(sc); 570 scratch = pmu_read_reg(sc, vSR); 571 pmu_ack_off(sc); 572 /* wait for intr to come up */ 573 do {} while (pmu_intr_state(sc) == 0); 574 pmu_ack_on(sc); 575 do {} while (pmu_intr_state(sc)); 576 *data = pmu_read_reg(sc, vSR); 577 return 0; 578 } 579 580 static int 581 pmu_intr_state(struct pmu_softc *sc) 582 { 583 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0); 584 } 585 586 static int 587 pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen, 588 uint8_t *out_msg) 589 { 590 struct pmu_softc *sc = cookie; 591 int i, rcv_len = -1; 592 uint8_t out_len, intreg; 593 594 intreg = pmu_read_reg(sc, vIER); 595 intreg &= 0x10; 596 pmu_write_reg(sc, vIER, intreg); 597 598 /* wait idle */ 599 do {} while (pmu_intr_state(sc)); 600 601 /* send command */ 602 pmu_send_byte(sc, cmd); 603 604 /* send length if necessary */ 605 if (pm_send_cmd_type[cmd] < 0) { 606 pmu_send_byte(sc, length); 607 } 608 609 for (i = 0; i < length; i++) { 610 pmu_send_byte(sc, in_msg[i]); 611 } 612 613 /* see if there's data to read */ 614 rcv_len = pm_receive_cmd_type[cmd]; 615 if (rcv_len == 0) 616 goto done; 617 618 /* read command */ 619 if (rcv_len == 1) { 620 pmu_read_byte(sc, out_msg); 621 goto done; 622 } else 623 out_msg[0] = cmd; 624 if (rcv_len < 0) { 625 pmu_read_byte(sc, &out_len); 626 rcv_len = out_len + 1; 627 } 628 for (i = 1; i < min(rcv_len, rlen); i++) 629 pmu_read_byte(sc, &out_msg[i]); 630 631 done: 632 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90); 633 634 return rcv_len; 635 } 636 637 638 static u_int 639 pmu_poll(device_t dev) 640 { 641 pmu_intr(dev); 642 return (0); 643 } 644 645 static void 646 pmu_in(struct pmu_softc *sc) 647 { 648 uint8_t reg; 649 650 reg = pmu_read_reg(sc, vACR); 651 reg &= ~vSR_OUT; 652 reg |= 0x0c; 653 pmu_write_reg(sc, vACR, reg); 654 } 655 656 static void 657 pmu_out(struct pmu_softc *sc) 658 { 659 uint8_t reg; 660 661 reg = pmu_read_reg(sc, vACR); 662 reg |= vSR_OUT; 663 reg |= 0x0c; 664 pmu_write_reg(sc, vACR, reg); 665 } 666 667 static void 668 pmu_ack_off(struct pmu_softc *sc) 669 { 670 uint8_t reg; 671 672 reg = pmu_read_reg(sc, vBufB); 673 reg &= ~vPB4; 674 pmu_write_reg(sc, vBufB, reg); 675 } 676 677 static void 678 pmu_ack_on(struct pmu_softc *sc) 679 { 680 uint8_t reg; 681 682 reg = pmu_read_reg(sc, vBufB); 683 reg |= vPB4; 684 pmu_write_reg(sc, vBufB, reg); 685 } 686 687 static void 688 pmu_intr(void *arg) 689 { 690 device_t dev; 691 struct pmu_softc *sc; 692 693 unsigned int len; 694 uint8_t resp[16]; 695 uint8_t junk[16]; 696 697 dev = (device_t)arg; 698 sc = device_get_softc(dev); 699 700 mtx_lock(&sc->sc_mutex); 701 702 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */ 703 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp); 704 705 mtx_unlock(&sc->sc_mutex); 706 707 if ((len < 1) || (resp[1] == 0)) { 708 return; 709 } 710 711 if (resp[1] & PMU_INT_ADB) { 712 /* 713 * the PMU will turn off autopolling after each command that 714 * it did not issue, so we assume any but TALK R0 is ours and 715 * re-enable autopoll here whenever we receive an ACK for a 716 * non TR0 command. 717 */ 718 mtx_lock(&sc->sc_mutex); 719 720 if ((resp[2] & 0x0f) != (ADB_COMMAND_TALK << 2)) { 721 if (sc->sc_autopoll) { 722 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, 723 (sc->sc_autopoll >> 8) & 0xff, 724 sc->sc_autopoll & 0xff}; 725 726 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, junk); 727 } 728 } 729 730 mtx_unlock(&sc->sc_mutex); 731 732 adb_receive_raw_packet(sc->adb_bus,resp[1],resp[2], 733 len - 3,&resp[3]); 734 } 735 if (resp[1] & PMU_INT_ENVIRONMENT) { 736 /* if the lid was just closed, notify devd. */ 737 if ((resp[2] & PMU_ENV_LID_CLOSED) && (!sc->lid_closed)) { 738 sc->lid_closed = 1; 739 devctl_notify("PMU", "lid", "close", NULL); 740 } 741 else if (!(resp[2] & PMU_ENV_LID_CLOSED) && (sc->lid_closed)) { 742 /* if the lid was just opened, notify devd. */ 743 sc->lid_closed = 0; 744 devctl_notify("PMU", "lid", "open", NULL); 745 } 746 if (resp[2] & PMU_ENV_POWER) 747 devctl_notify("PMU", "Button", "pressed", NULL); 748 } 749 } 750 751 static u_int 752 pmu_adb_send(device_t dev, u_char command_byte, int len, u_char *data, 753 u_char poll) 754 { 755 struct pmu_softc *sc = device_get_softc(dev); 756 int i,replen; 757 uint8_t packet[16], resp[16]; 758 759 /* construct an ADB command packet and send it */ 760 761 packet[0] = command_byte; 762 763 packet[1] = 0; 764 packet[2] = len; 765 for (i = 0; i < len; i++) 766 packet[i + 3] = data[i]; 767 768 mtx_lock(&sc->sc_mutex); 769 replen = pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp); 770 mtx_unlock(&sc->sc_mutex); 771 772 if (poll) 773 pmu_poll(dev); 774 775 return 0; 776 } 777 778 static u_int 779 pmu_adb_autopoll(device_t dev, uint16_t mask) 780 { 781 struct pmu_softc *sc = device_get_softc(dev); 782 783 /* magical incantation to re-enable autopolling */ 784 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (mask >> 8) & 0xff, mask & 0xff}; 785 uint8_t resp[16]; 786 787 mtx_lock(&sc->sc_mutex); 788 789 if (sc->sc_autopoll == mask) { 790 mtx_unlock(&sc->sc_mutex); 791 return 0; 792 } 793 794 sc->sc_autopoll = mask & 0xffff; 795 796 if (mask) 797 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 798 else 799 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp); 800 801 mtx_unlock(&sc->sc_mutex); 802 803 return 0; 804 } 805 806 static void 807 pmu_shutdown(void *xsc, int howto) 808 { 809 struct pmu_softc *sc = xsc; 810 uint8_t cmd[] = {'M', 'A', 'T', 'T'}; 811 812 if (howto & RB_HALT) 813 pmu_send(sc, PMU_POWER_OFF, 4, cmd, 0, NULL); 814 else 815 pmu_send(sc, PMU_RESET_CPU, 0, NULL, 0, NULL); 816 817 for (;;); 818 } 819 820 static void 821 pmu_set_sleepled(void *xsc, int onoff) 822 { 823 struct pmu_softc *sc = xsc; 824 uint8_t cmd[] = {4, 0, 0}; 825 826 cmd[2] = onoff; 827 828 mtx_lock(&sc->sc_mutex); 829 pmu_send(sc, PMU_SET_SLEEPLED, 3, cmd, 0, NULL); 830 mtx_unlock(&sc->sc_mutex); 831 } 832 833 static int 834 pmu_server_mode(SYSCTL_HANDLER_ARGS) 835 { 836 struct pmu_softc *sc = arg1; 837 838 u_int server_mode = 0; 839 uint8_t getcmd[] = {PMU_PWR_GET_POWERUP_EVENTS}; 840 uint8_t setcmd[] = {0, 0, PMU_PWR_WAKEUP_AC_INSERT}; 841 uint8_t resp[3]; 842 int error, len; 843 844 mtx_lock(&sc->sc_mutex); 845 len = pmu_send(sc, PMU_POWER_EVENTS, 1, getcmd, 3, resp); 846 mtx_unlock(&sc->sc_mutex); 847 848 if (len == 3) 849 server_mode = (resp[2] & PMU_PWR_WAKEUP_AC_INSERT) ? 1 : 0; 850 851 error = sysctl_handle_int(oidp, &server_mode, 0, req); 852 853 if (len != 3) 854 return (EINVAL); 855 856 if (error || !req->newptr) 857 return (error); 858 859 if (server_mode == 1) 860 setcmd[0] = PMU_PWR_SET_POWERUP_EVENTS; 861 else if (server_mode == 0) 862 setcmd[0] = PMU_PWR_CLR_POWERUP_EVENTS; 863 else 864 return (EINVAL); 865 866 setcmd[1] = resp[1]; 867 868 mtx_lock(&sc->sc_mutex); 869 pmu_send(sc, PMU_POWER_EVENTS, 3, setcmd, 2, resp); 870 mtx_unlock(&sc->sc_mutex); 871 872 return (0); 873 } 874 875 static int 876 pmu_query_battery(struct pmu_softc *sc, int batt, struct pmu_battstate *info) 877 { 878 uint8_t reg; 879 uint8_t resp[16]; 880 int len; 881 882 reg = batt + 1; 883 884 mtx_lock(&sc->sc_mutex); 885 len = pmu_send(sc, PMU_SMART_BATTERY_STATE, 1, ®, 16, resp); 886 mtx_unlock(&sc->sc_mutex); 887 888 if (len < 3) 889 return (-1); 890 891 /* All PMU battery info replies share a common header: 892 * Byte 1 Payload Format 893 * Byte 2 Battery Flags 894 */ 895 896 info->state = resp[2]; 897 898 switch (resp[1]) { 899 case 3: 900 case 4: 901 /* 902 * Formats 3 and 4 appear to be the same: 903 * Byte 3 Charge 904 * Byte 4 Max Charge 905 * Byte 5 Current 906 * Byte 6 Voltage 907 */ 908 909 info->charge = resp[3]; 910 info->maxcharge = resp[4]; 911 /* Current can be positive or negative */ 912 info->current = (int8_t)resp[5]; 913 info->voltage = resp[6]; 914 break; 915 case 5: 916 /* 917 * Formats 5 is a wider version of formats 3 and 4 918 * Byte 3-4 Charge 919 * Byte 5-6 Max Charge 920 * Byte 7-8 Current 921 * Byte 9-10 Voltage 922 */ 923 924 info->charge = (resp[3] << 8) | resp[4]; 925 info->maxcharge = (resp[5] << 8) | resp[6]; 926 /* Current can be positive or negative */ 927 info->current = (int16_t)((resp[7] << 8) | resp[8]); 928 info->voltage = (resp[9] << 8) | resp[10]; 929 break; 930 default: 931 device_printf(sc->sc_dev, "Unknown battery info format (%d)!\n", 932 resp[1]); 933 return (-1); 934 } 935 936 return (0); 937 } 938 939 static void 940 pmu_battery_notify(struct pmu_battstate *batt, struct pmu_battstate *old) 941 { 942 char notify_buf[16]; 943 int new_acline, old_acline; 944 945 new_acline = (batt->state & PMU_PWR_AC_PRESENT) ? 1 : 0; 946 old_acline = (old->state & PMU_PWR_AC_PRESENT) ? 1 : 0; 947 948 if (new_acline != old_acline) { 949 snprintf(notify_buf, sizeof(notify_buf), 950 "notify=0x%02x", new_acline); 951 devctl_notify("PMU", "POWER", "ACLINE", notify_buf); 952 } 953 } 954 955 static void 956 pmu_battquery_proc() 957 { 958 struct pmu_softc *sc; 959 struct pmu_battstate batt; 960 struct pmu_battstate cur_batt; 961 int error; 962 963 sc = device_get_softc(pmu); 964 965 bzero(&cur_batt, sizeof(cur_batt)); 966 while (1) { 967 kproc_suspend_check(curproc); 968 error = pmu_query_battery(sc, 0, &batt); 969 pmu_battery_notify(&batt, &cur_batt); 970 cur_batt = batt; 971 pause("pmu_batt", hz); 972 } 973 } 974 975 static int 976 pmu_battmon(SYSCTL_HANDLER_ARGS) 977 { 978 struct pmu_softc *sc; 979 int error, result; 980 981 sc = arg1; 982 result = pmu_battmon_enabled; 983 984 error = sysctl_handle_int(oidp, &result, 0, req); 985 986 if (error || !req->newptr) 987 return (error); 988 989 if (!result && pmu_battmon_enabled) 990 error = kproc_suspend(pmubattproc, hz); 991 else if (result && pmu_battmon_enabled == 0) 992 error = kproc_resume(pmubattproc); 993 pmu_battmon_enabled = (result != 0); 994 995 return (error); 996 } 997 998 static int 999 pmu_acline_state(SYSCTL_HANDLER_ARGS) 1000 { 1001 struct pmu_softc *sc; 1002 struct pmu_battstate batt; 1003 int error, result; 1004 1005 sc = arg1; 1006 1007 /* The PMU treats the AC line status as a property of the battery */ 1008 error = pmu_query_battery(sc, 0, &batt); 1009 1010 if (error != 0) 1011 return (error); 1012 1013 result = (batt.state & PMU_PWR_AC_PRESENT) ? 1 : 0; 1014 error = sysctl_handle_int(oidp, &result, 0, req); 1015 1016 return (error); 1017 } 1018 1019 static int 1020 pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS) 1021 { 1022 struct pmu_softc *sc; 1023 struct pmu_battstate batt; 1024 int error, result; 1025 1026 sc = arg1; 1027 1028 error = pmu_query_battery(sc, arg2 & 0x00ff, &batt); 1029 1030 if (error != 0) 1031 return (error); 1032 1033 switch (arg2 & 0xff00) { 1034 case PMU_BATSYSCTL_PRESENT: 1035 result = (batt.state & PMU_PWR_BATT_PRESENT) ? 1 : 0; 1036 break; 1037 case PMU_BATSYSCTL_CHARGING: 1038 result = (batt.state & PMU_PWR_BATT_CHARGING) ? 1 : 0; 1039 break; 1040 case PMU_BATSYSCTL_CHARGE: 1041 result = batt.charge; 1042 break; 1043 case PMU_BATSYSCTL_MAXCHARGE: 1044 result = batt.maxcharge; 1045 break; 1046 case PMU_BATSYSCTL_CURRENT: 1047 result = batt.current; 1048 break; 1049 case PMU_BATSYSCTL_VOLTAGE: 1050 result = batt.voltage; 1051 break; 1052 case PMU_BATSYSCTL_TIME: 1053 /* Time remaining until full charge/discharge, in minutes */ 1054 1055 if (batt.current >= 0) 1056 result = (batt.maxcharge - batt.charge) /* mAh */ * 60 1057 / batt.current /* mA */; 1058 else 1059 result = (batt.charge /* mAh */ * 60) 1060 / (-batt.current /* mA */); 1061 break; 1062 case PMU_BATSYSCTL_LIFE: 1063 /* Battery charge fraction, in percent */ 1064 result = (batt.charge * 100) / batt.maxcharge; 1065 break; 1066 default: 1067 /* This should never happen */ 1068 result = -1; 1069 } 1070 1071 error = sysctl_handle_int(oidp, &result, 0, req); 1072 1073 return (error); 1074 } 1075 1076 #define DIFF19041970 2082844800 1077 1078 static int 1079 pmu_gettime(device_t dev, struct timespec *ts) 1080 { 1081 struct pmu_softc *sc = device_get_softc(dev); 1082 uint8_t resp[16]; 1083 uint32_t sec; 1084 1085 mtx_lock(&sc->sc_mutex); 1086 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp); 1087 mtx_unlock(&sc->sc_mutex); 1088 1089 memcpy(&sec, &resp[1], 4); 1090 ts->tv_sec = sec - DIFF19041970; 1091 ts->tv_nsec = 0; 1092 1093 return (0); 1094 } 1095 1096 static int 1097 pmu_settime(device_t dev, struct timespec *ts) 1098 { 1099 struct pmu_softc *sc = device_get_softc(dev); 1100 uint32_t sec; 1101 1102 sec = ts->tv_sec + DIFF19041970; 1103 1104 mtx_lock(&sc->sc_mutex); 1105 pmu_send(sc, PMU_SET_RTC, sizeof(sec), (uint8_t *)&sec, 0, NULL); 1106 mtx_unlock(&sc->sc_mutex); 1107 1108 return (0); 1109 } 1110 1111 int 1112 pmu_set_speed(int low_speed) 1113 { 1114 struct pmu_softc *sc; 1115 uint8_t sleepcmd[] = {'W', 'O', 'O', 'F', 0}; 1116 uint8_t resp[16]; 1117 1118 sc = device_get_softc(pmu); 1119 pmu_write_reg(sc, vIER, 0x10); 1120 spinlock_enter(); 1121 mtdec(0x7fffffff); 1122 mb(); 1123 mtdec(0x7fffffff); 1124 1125 sleepcmd[4] = low_speed; 1126 pmu_send(sc, PMU_CPU_SPEED, 5, sleepcmd, 16, resp); 1127 unin_chip_sleep(NULL, 1); 1128 platform_sleep(); 1129 unin_chip_wake(NULL); 1130 1131 mtdec(1); /* Force a decrementer exception */ 1132 spinlock_exit(); 1133 pmu_write_reg(sc, vIER, 0x90); 1134 1135 return (0); 1136 } 1137