pmu.c revision 1.43
1 /* $NetBSD: pmu.c,v 1.43 2025/09/07 21:45:14 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Michael Lorenz 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: pmu.c,v 1.43 2025/09/07 21:45:14 thorpej Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/device.h> 36 #include <sys/proc.h> 37 #include <sys/kthread.h> 38 #include <sys/atomic.h> 39 #include <sys/condvar.h> 40 #include <sys/mutex.h> 41 42 #include <sys/bus.h> 43 #include <machine/pio.h> 44 #include <machine/autoconf.h> 45 #include <dev/clock_subr.h> 46 #include <dev/i2c/i2cvar.h> 47 48 #include <dev/sysmon/sysmonvar.h> 49 50 #include <macppc/dev/viareg.h> 51 #include <macppc/dev/pmuvar.h> 52 #include <macppc/dev/batteryvar.h> 53 54 #include <dev/ofw/openfirm.h> 55 #include <dev/adb/adbvar.h> 56 #include "opt_pmu.h" 57 #include "nadb.h" 58 59 #ifdef PMU_DEBUG 60 #define DPRINTF printf 61 #else 62 #define DPRINTF while (0) printf 63 #endif 64 65 #define PMU_NOTREADY 0x1 /* has not been initialized yet */ 66 #define PMU_IDLE 0x2 /* the bus is currently idle */ 67 #define PMU_OUT 0x3 /* sending out a command */ 68 #define PMU_IN 0x4 /* receiving data */ 69 70 static void pmu_attach(device_t, device_t, void *); 71 static int pmu_match(device_t, cfdata_t, void *); 72 static void pmu_autopoll(void *, int); 73 74 static int pmu_intr(void *); 75 76 77 /* bits for sc_pending, as signals to the event thread */ 78 #define PMU_EV_CARD0 1 79 #define PMU_EV_CARD1 2 80 #define PMU_EV_BUTTON 4 81 #define PMU_EV_LID 8 82 83 struct pmu_softc { 84 device_t sc_dev; 85 void *sc_ih; 86 struct todr_chip_handle sc_todr; 87 struct adb_bus_accessops sc_adbops; 88 struct i2c_controller sc_i2c; 89 struct pmu_ops sc_pmu_ops; 90 struct sysmon_pswitch sc_lidswitch; 91 struct sysmon_pswitch sc_powerbutton; 92 bus_space_tag_t sc_memt; 93 bus_space_handle_t sc_memh; 94 uint32_t sc_flags; 95 #define PMU_HAS_BACKLIGHT_CONTROL 1 96 int sc_node; 97 int sc_error; 98 int sc_autopoll; 99 int sc_brightness, sc_brightness_wanted; 100 int sc_volume, sc_volume_wanted; 101 int sc_lid_closed; 102 int sc_is_rackmac; 103 int sc_button; 104 uint8_t sc_env_old; 105 uint8_t sc_env_mask; 106 /* deferred processing */ 107 lwp_t *sc_thread; 108 int sc_pending; 109 /* signalling the event thread */ 110 kcondvar_t sc_event; 111 kmutex_t sc_evmtx; 112 /* ADB */ 113 void (*sc_adb_handler)(void *, int, uint8_t *); 114 void *sc_adb_cookie; 115 void (*sc_callback)(void *); 116 void *sc_cb_cookie; 117 }; 118 119 CFATTACH_DECL_NEW(pmu, sizeof(struct pmu_softc), 120 pmu_match, pmu_attach, NULL, NULL); 121 122 static inline void pmu_write_reg(struct pmu_softc *, int, uint8_t); 123 static inline uint8_t pmu_read_reg(struct pmu_softc *, int); 124 static void pmu_in(struct pmu_softc *); 125 static void pmu_out(struct pmu_softc *); 126 static void pmu_ack_off(struct pmu_softc *); 127 static void pmu_ack_on(struct pmu_softc *); 128 static int pmu_intr_state(struct pmu_softc *); 129 130 static void pmu_init(struct pmu_softc *); 131 static void pmu_thread(void *); 132 static void pmu_eject_card(struct pmu_softc *, int); 133 static void pmu_update_brightness(struct pmu_softc *); 134 static void pmu_register_callback(void *, void (*)(void *), void *); 135 /* 136 * send a message to the PMU. 137 */ 138 static int pmu_send(void *, int, int, uint8_t *, int, uint8_t *); 139 static void pmu_adb_poll(void *); 140 static int pmu_todr_set(todr_chip_handle_t, struct timeval *); 141 static int pmu_todr_get(todr_chip_handle_t, struct timeval *); 142 143 static int pmu_adb_handler(void *, int, uint8_t *); 144 145 static struct pmu_softc *pmu0 = NULL; 146 147 /* ADB bus attachment stuff */ 148 static int pmu_adb_send(void *, int, int, int, uint8_t *); 149 static int pmu_adb_set_handler(void *, void (*)(void *, int, uint8_t *), void *); 150 151 /* i2c stuff */ 152 static int pmu_i2c_exec(void *, i2c_op_t, i2c_addr_t, const void *, size_t, 153 void *, size_t, int); 154 155 static void pmu_attach_legacy_battery(struct pmu_softc *); 156 static void pmu_attach_smart_battery(struct pmu_softc *, int); 157 static int pmu_print(void *, const char *); 158 159 /* these values shows that number of data returned after 'send' cmd is sent */ 160 static signed char pm_send_cmd_type[] = { 161 -1, -1, -1, -1, -1, -1, -1, -1, 162 -1, -1, -1, -1, -1, -1, -1, -1, 163 0x01, 0x01, -1, -1, -1, -1, -1, -1, 164 0x00, 0x00, -1, -1, -1, -1, -1, 0x00, 165 -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1, 166 0x00, -1, -1, -1, -1, -1, -1, -1, 167 0x04, 0x14, -1, 0x03, -1, -1, -1, -1, 168 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1, 169 0x01, 0x01, -1, -1, -1, -1, -1, -1, 170 0x00, 0x00, -1, -1, 0x01, -1, -1, -1, 171 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01, 172 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1, 173 0x02, -1, -1, -1, -1, -1, -1, -1, 174 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1, 175 0x01, 0x01, 0x01, -1, -1, -1, -1, -1, 176 0x00, 0x00, -1, -1, -1, -1, 0x04, 0x04, 177 0x04, -1, 0x00, -1, -1, -1, -1, -1, 178 0x00, -1, -1, -1, -1, -1, -1, -1, 179 0x01, 0x02, -1, -1, -1, -1, -1, -1, 180 0x00, 0x00, -1, -1, -1, -1, -1, -1, 181 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1, 182 0x01, 0x01, 0x03, 0x02, -1, -1, -1, -1, 183 -1, -1, -1, -1, -1, -1, -1, -1, 184 -1, -1, -1, -1, -1, -1, -1, -1, 185 -1, -1, -1, -1, -1, -1, -1, -1, 186 -1, -1, -1, -1, -1, -1, -1, -1, 187 0x00, -1, -1, -1, -1, -1, -1, -1, 188 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1, 189 -1, 0x04, 0x00, -1, -1, -1, -1, -1, 190 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00, 191 -1, -1, -1, -1, -1, -1, -1, -1, 192 -1, -1, -1, -1, -1, -1, -1, -1 193 }; 194 195 /* these values shows that number of data returned after 'receive' cmd is sent */ 196 static signed char pm_receive_cmd_type[] = { 197 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 198 -1, -1, -1, -1, -1, -1, -1, -1, 199 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 200 0x02, 0x02, -1, -1, -1, -1, -1, 0x00, 201 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 202 -1, -1, -1, -1, -1, -1, -1, -1, 203 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 204 0x05, 0x15, -1, 0x02, -1, -1, -1, -1, 205 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 206 0x02, 0x02, -1, -1, -1, -1, -1, -1, 207 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 208 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1, 209 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 210 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1, 211 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 212 -1, -1, -1, -1, -1, -1, 0x01, 0x01, 213 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 214 0x06, -1, -1, -1, -1, -1, -1, -1, 215 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 216 0x02, 0x02, -1, -1, -1, -1, -1, -1, 217 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 218 0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1, 219 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 220 -1, -1, -1, -1, -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 0x02, 0x02, -1, -1, 0x02, -1, -1, -1, 225 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 226 -1, -1, 0x02, -1, -1, -1, -1, 0x00, 227 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 228 -1, -1, -1, -1, -1, -1, -1, -1, 229 }; 230 231 static const char *has_legacy_battery[] = { 232 "AAPL,3500", 233 "AAPL,3400/2400", 234 NULL }; 235 236 static const char *has_two_smart_batteries[] = { 237 "AAPL,PowerBook1998", 238 "PowerBook1,1", 239 NULL }; 240 241 static int 242 pmu_match(device_t parent, cfdata_t cf, void *aux) 243 { 244 struct confargs *ca = aux; 245 246 if (ca->ca_nreg < 8) 247 return 0; 248 249 if (ca->ca_nintr < 4) 250 return 0; 251 252 if (strcmp(ca->ca_name, "via-pmu") == 0) { 253 return 10; 254 } 255 256 return 0; 257 } 258 259 static void 260 pmu_attach(device_t parent, device_t self, void *aux) 261 { 262 struct confargs *ca = aux; 263 struct pmu_softc *sc = device_private(self); 264 struct i2cbus_attach_args iba; 265 uint32_t regs[16]; 266 int irq = ca->ca_intr[0]; 267 int node, extint_node, root_node; 268 int nbat = 1, i, pmnode; 269 int type = IST_EDGE; 270 uint8_t cmd[2] = {2, 0}; 271 uint8_t resp[16]; 272 char name[256], model[32]; 273 prop_dictionary_t dict = device_properties(self); 274 275 extint_node = of_getnode_byname(OF_parent(ca->ca_node), "extint-gpio1"); 276 if (extint_node) { 277 278 OF_getprop(extint_node, "interrupts", &irq, 4); 279 type = IST_LEVEL; 280 } 281 282 aprint_normal(" irq %d: ", irq); 283 284 sc->sc_dev = self; 285 sc->sc_node = ca->ca_node; 286 sc->sc_memt = ca->ca_tag; 287 288 root_node = OF_finddevice("/"); 289 290 sc->sc_error = 0; 291 sc->sc_autopoll = 0; 292 sc->sc_pending = 0; 293 sc->sc_env_old = 0; 294 sc->sc_brightness = sc->sc_brightness_wanted = 0x80; 295 sc->sc_volume = sc->sc_volume_wanted = 0x80; 296 sc->sc_flags = 0; 297 sc->sc_callback = NULL; 298 sc->sc_lid_closed = 0; 299 sc->sc_button = 0; 300 sc->sc_env_mask = 0xff; 301 sc->sc_is_rackmac = 0; 302 303 cv_init(&sc->sc_event, "pmu_event"); 304 mutex_init(&sc->sc_evmtx, MUTEX_DEFAULT, IPL_NONE); 305 306 /* 307 * core99 PowerMacs like to send environment messages with the lid 308 * switch bit set - since that doesn't make any sense here and it 309 * probably means something else anyway we mask it out 310 */ 311 312 if (OF_getprop(root_node, "model", model, 32) != 0) { 313 if (strncmp(model, "PowerMac", 8) == 0) { 314 sc->sc_env_mask = PMU_ENV_POWER_BUTTON; 315 } 316 if (strncmp(model, "RackMac1", 8) == 0) { 317 sc->sc_is_rackmac = 1; 318 } 319 } 320 321 if (bus_space_map(sc->sc_memt, ca->ca_reg[0] + ca->ca_baseaddr, 322 ca->ca_reg[1], 0, &sc->sc_memh) != 0) { 323 aprint_error_dev(self, "unable to map registers\n"); 324 return; 325 } 326 sc->sc_ih = intr_establish_xname(irq, type, IPL_TTY, pmu_intr, sc, 327 device_xname(self)); 328 329 pmu_init(sc); 330 331 sc->sc_pmu_ops.cookie = sc; 332 sc->sc_pmu_ops.do_command = pmu_send; 333 sc->sc_pmu_ops.register_callback = pmu_register_callback; 334 335 if (pmu0 == NULL) 336 pmu0 = sc; 337 338 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp); 339 340 /* check what kind of PMU we're talking to */ 341 if (pmu_send(sc, PMU_GET_VERSION, 0, cmd, 16, resp) > 1) 342 aprint_normal(" rev. %d", resp[1]); 343 aprint_normal("\n"); 344 345 node = OF_child(sc->sc_node); 346 347 while (node != 0) { 348 349 if (OF_getprop(node, "name", name, 256) <= 0) 350 goto next; 351 352 if (strncmp(name, "pmu-i2c", 8) == 0) { 353 int devs, sensors; 354 uint32_t addr, reg; 355 char compat[256]; 356 prop_array_t cfg; 357 prop_dictionary_t dev; 358 prop_data_t data; 359 360 aprint_normal_dev(self, "initializing IIC bus\n"); 361 362 cfg = prop_array_create(); 363 prop_dictionary_set(dict, "i2c-child-devices", cfg); 364 prop_object_release(cfg); 365 366 /* look for i2c devices */ 367 devs = OF_child(node); 368 while (devs != 0) { 369 int clen; 370 if (OF_getprop(devs, "name", name, 256) <= 0) 371 goto skip; 372 if ((clen = OF_getprop(devs, "compatible", 373 compat, 256)) <= 0) 374 goto skip; 375 if (OF_getprop(devs, "reg", &addr, 4) <= 0) 376 goto skip; 377 addr = (addr & 0xff) >> 1; 378 DPRINTF("-> %s@%x\n", name, addr); 379 dev = prop_dictionary_create(); 380 prop_dictionary_set_string(dev, "name", name); 381 data = prop_data_create_copy(compat, clen); 382 prop_dictionary_set(dev, "compatible", data); 383 prop_object_release(data); 384 prop_dictionary_set_uint32(dev, "addr", addr); 385 prop_dictionary_set_uint64(dev, "cookie", devs); 386 if (OF_getprop(devs, "config-reg", ®, 4) == 4) { 387 prop_dictionary_set_uint32(dev, "config-reg", reg); 388 } 389 sensors = OF_child(devs); 390 while (sensors != 0) { 391 char loc[64]; 392 char pname[8]; 393 if (OF_getprop(sensors, "reg", ®, 4) != 4) 394 goto nope; 395 if (OF_getprop(sensors, "location", loc, 63) <= 0) 396 goto nope; 397 snprintf(pname, 7, "s%02x", reg); 398 prop_dictionary_set_string(dev, pname, loc); 399 nope: 400 sensors = OF_peer(sensors); 401 } 402 prop_array_add(cfg, dev); 403 prop_object_release(dev); 404 skip: 405 devs = OF_peer(devs); 406 } 407 memset(&iba, 0, sizeof(iba)); 408 iba.iba_tag = &sc->sc_i2c; 409 iic_tag_init(&sc->sc_i2c); 410 sc->sc_i2c.ic_cookie = sc; 411 sc->sc_i2c.ic_exec = pmu_i2c_exec; 412 config_found(sc->sc_dev, &iba, iicbus_print, 413 CFARGS(.iattr = "i2cbus")); 414 goto next; 415 } 416 if (strncmp(name, "adb", 4) == 0) { 417 aprint_normal_dev(self, "initializing ADB\n"); 418 sc->sc_adbops.cookie = sc; 419 sc->sc_adbops.send = pmu_adb_send; 420 sc->sc_adbops.poll = pmu_adb_poll; 421 sc->sc_adbops.autopoll = pmu_autopoll; 422 sc->sc_adbops.set_handler = pmu_adb_set_handler; 423 #if NNADB > 0 424 config_found(self, &sc->sc_adbops, nadb_print, 425 CFARGS(.iattr = "adb_bus")); 426 #endif 427 goto next; 428 } 429 if (strncmp(name, "rtc", 4) == 0) { 430 431 aprint_normal_dev(self, "initializing RTC\n"); 432 sc->sc_todr.todr_gettime = pmu_todr_get; 433 sc->sc_todr.todr_settime = pmu_todr_set; 434 sc->sc_todr.todr_dev = self; 435 todr_attach(&sc->sc_todr); 436 goto next; 437 } 438 if (strncmp(name, "battery", 8) == 0) 439 goto next; 440 441 aprint_normal_dev(self, "%s not configured\n", name); 442 next: 443 node = OF_peer(node); 444 } 445 446 if (OF_finddevice("/bandit/ohare") != -1) { 447 aprint_normal_dev(self, "enabling ohare backlight control\n"); 448 sc->sc_flags |= PMU_HAS_BACKLIGHT_CONTROL; 449 cmd[0] = 0; 450 cmd[1] = 0; 451 memset(resp, 0, 6); 452 if (pmu_send(sc, PMU_READ_BRIGHTNESS, 1, cmd, 16, resp) > 1) { 453 sc->sc_brightness_wanted = resp[1]; 454 pmu_update_brightness(sc); 455 } 456 } 457 458 /* attach batteries */ 459 if (of_compatible(root_node, has_legacy_battery)) { 460 461 pmu_attach_legacy_battery(sc); 462 } else if (of_compatible(root_node, has_two_smart_batteries)) { 463 464 pmu_attach_smart_battery(sc, 0); 465 pmu_attach_smart_battery(sc, 1); 466 } else { 467 468 /* check how many batteries we have */ 469 pmnode = of_getnode_byname(ca->ca_node, "power-mgt"); 470 if (pmnode == -1) 471 goto bat_done; 472 if (OF_getprop(pmnode, "prim-info", regs, sizeof(regs)) < 24) 473 goto bat_done; 474 nbat = regs[6] >> 16; 475 for (i = 0; i < nbat; i++) 476 pmu_attach_smart_battery(sc, i); 477 } 478 bat_done: 479 480 if (kthread_create(PRI_NONE, 0, NULL, pmu_thread, sc, &sc->sc_thread, 481 "%s", "pmu") != 0) { 482 aprint_error_dev(self, "unable to create event kthread\n"); 483 } 484 485 sc->sc_lidswitch.smpsw_name = "Lid switch"; 486 sc->sc_lidswitch.smpsw_type = PSWITCH_TYPE_LID; 487 if (sysmon_pswitch_register(&sc->sc_lidswitch) != 0) 488 aprint_error_dev(self, 489 "unable to register lid switch with sysmon\n"); 490 491 sc->sc_powerbutton.smpsw_name = "Power button"; 492 sc->sc_powerbutton.smpsw_type = PSWITCH_TYPE_POWER; 493 if (sysmon_pswitch_register(&sc->sc_powerbutton) != 0) 494 aprint_error_dev(self, 495 "unable to register power button with sysmon\n"); 496 } 497 498 static void 499 pmu_register_callback(void *pmu_cookie, void (*cb)(void *), void *cookie) 500 { 501 struct pmu_softc *sc = pmu_cookie; 502 503 sc->sc_callback = cb; 504 sc->sc_cb_cookie = cookie; 505 } 506 507 static void 508 pmu_init(struct pmu_softc *sc) 509 { 510 uint8_t pmu_imask, resp[16]; 511 512 pmu_imask = 513 PMU_INT_PCEJECT | PMU_INT_SNDBRT | PMU_INT_ADB/* | PMU_INT_TICK*/; 514 pmu_imask |= PMU_INT_BATTERY; 515 pmu_imask |= PMU_INT_ENVIRONMENT; 516 pmu_send(sc, PMU_SET_IMASK, 1, &pmu_imask, 16, resp); 517 518 pmu_write_reg(sc, vIER, 0x90); /* enable VIA interrupts */ 519 } 520 521 static inline void 522 pmu_write_reg(struct pmu_softc *sc, int offset, uint8_t value) 523 { 524 525 bus_space_write_1(sc->sc_memt, sc->sc_memh, offset, value); 526 } 527 528 static inline uint8_t 529 pmu_read_reg(struct pmu_softc *sc, int offset) 530 { 531 532 return bus_space_read_1(sc->sc_memt, sc->sc_memh, offset); 533 } 534 535 static inline int 536 pmu_send_byte(struct pmu_softc *sc, uint8_t data) 537 { 538 539 pmu_out(sc); 540 pmu_write_reg(sc, vSR, data); 541 pmu_ack_off(sc); 542 /* wait for intr to come up */ 543 /* XXX should add a timeout and bail if it expires */ 544 do {} while (pmu_intr_state(sc) == 0); 545 pmu_ack_on(sc); 546 do {} while (pmu_intr_state(sc)); 547 pmu_ack_on(sc); 548 DPRINTF(" %02x>", data); 549 return 0; 550 } 551 552 static inline int 553 pmu_read_byte(struct pmu_softc *sc, uint8_t *data) 554 { 555 volatile uint8_t junk; 556 pmu_in(sc); 557 junk = pmu_read_reg(sc, vSR); 558 __USE(junk); 559 pmu_ack_off(sc); 560 /* wait for intr to come up */ 561 do {} while (pmu_intr_state(sc) == 0); 562 pmu_ack_on(sc); 563 do {} while (pmu_intr_state(sc)); 564 *data = pmu_read_reg(sc, vSR); 565 DPRINTF(" <%02x", *data); 566 return 0; 567 } 568 569 static int 570 pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen, 571 uint8_t *out_msg) 572 { 573 struct pmu_softc *sc = cookie; 574 int i, rcv_len = -1, s; 575 uint8_t out_len, intreg; 576 577 DPRINTF("pmu_send: "); 578 579 s = splhigh(); 580 intreg = pmu_read_reg(sc, vIER); 581 intreg &= 0x10; 582 pmu_write_reg(sc, vIER, intreg); 583 584 /* wait idle */ 585 do {} while (pmu_intr_state(sc)); 586 sc->sc_error = 0; 587 588 /* send command */ 589 pmu_send_byte(sc, cmd); 590 591 /* send length if necessary */ 592 if (pm_send_cmd_type[cmd] < 0) { 593 pmu_send_byte(sc, length); 594 } 595 596 for (i = 0; i < length; i++) { 597 pmu_send_byte(sc, in_msg[i]); 598 DPRINTF(" next "); 599 } 600 DPRINTF("done sending\n"); 601 602 /* see if there's data to read */ 603 rcv_len = pm_receive_cmd_type[cmd]; 604 if (rcv_len == 0) 605 goto done; 606 607 /* read command */ 608 if (rcv_len == 1) { 609 pmu_read_byte(sc, out_msg); 610 goto done; 611 } else 612 out_msg[0] = cmd; 613 if (rcv_len < 0) { 614 pmu_read_byte(sc, &out_len); 615 rcv_len = out_len + 1; 616 } 617 for (i = 1; i < uimin(rcv_len, rlen); i++) 618 pmu_read_byte(sc, &out_msg[i]); 619 620 done: 621 DPRINTF("\n"); 622 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90); 623 splx(s); 624 625 return rcv_len; 626 } 627 628 static void 629 pmu_adb_poll(void *cookie) 630 { 631 struct pmu_softc *sc = cookie; 632 int s; 633 634 s = spltty(); 635 pmu_intr(sc); 636 splx(s); 637 } 638 639 static void 640 pmu_in(struct pmu_softc *sc) 641 { 642 volatile uint8_t reg; 643 644 reg = pmu_read_reg(sc, vACR); 645 reg &= ~vSR_OUT; 646 reg |= 0x0c; 647 pmu_write_reg(sc, vACR, reg); 648 } 649 650 static void 651 pmu_out(struct pmu_softc *sc) 652 { 653 volatile uint8_t reg; 654 655 reg = pmu_read_reg(sc, vACR); 656 reg |= vSR_OUT; 657 reg |= 0x0c; 658 pmu_write_reg(sc, vACR, reg); 659 } 660 661 static void 662 pmu_ack_off(struct pmu_softc *sc) 663 { 664 volatile uint8_t reg; 665 666 reg = pmu_read_reg(sc, vBufB); 667 reg &= ~vPB4; 668 pmu_write_reg(sc, vBufB, reg); 669 } 670 671 static void 672 pmu_ack_on(struct pmu_softc *sc) 673 { 674 volatile uint8_t reg; 675 676 reg = pmu_read_reg(sc, vBufB); 677 reg |= vPB4; 678 pmu_write_reg(sc, vBufB, reg); 679 } 680 681 static int 682 pmu_intr_state(struct pmu_softc *sc) 683 { 684 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0); 685 } 686 687 static int 688 pmu_intr(void *arg) 689 { 690 struct pmu_softc *sc = arg; 691 unsigned int len, i; 692 uint8_t resp[16]; 693 694 DPRINTF(":"); 695 696 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */ 697 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp); 698 if ((len < 1) || (resp[1] == 0)) 699 goto done; 700 #ifdef PMU_DEBUG 701 { 702 DPRINTF("intr: %02x", resp[0]); 703 for (i = 1; i < len; i++) 704 DPRINTF(" %02x", resp[i]); 705 DPRINTF("\n"); 706 } 707 #endif 708 if (resp[1] & PMU_INT_ADB) { 709 pmu_adb_handler(sc, len - 1, &resp[1]); 710 goto done; 711 } 712 if (resp[1] & PMU_INT_SNDBRT) { 713 /* deal with the brightness / volume control buttons */ 714 DPRINTF("brightness: %d volume %d\n", resp[2], resp[3]); 715 sc->sc_brightness_wanted = resp[2]; 716 sc->sc_volume_wanted = resp[3]; 717 cv_signal(&sc->sc_event); 718 goto done; 719 } 720 if (resp[1] & PMU_INT_PCEJECT) { 721 /* deal with PCMCIA eject buttons */ 722 DPRINTF("card eject %d\n", resp[3]); 723 atomic_or_32(&sc->sc_pending, (resp[3] & 3)); 724 cv_signal(&sc->sc_event); 725 goto done; 726 } 727 if (resp[1] & PMU_INT_BATTERY) { 728 /* deal with battery messages */ 729 printf("battery:"); 730 for (i = 2; i < len; i++) 731 printf(" %02x", resp[i]); 732 printf("\n"); 733 goto done; 734 } 735 if (resp[1] & PMU_INT_ENVIRONMENT) { 736 uint8_t diff; 737 #ifdef PMU_DEBUG 738 /* deal with environment messages */ 739 printf("environment:"); 740 for (i = 2; i < len; i++) 741 printf(" %02x", resp[i]); 742 printf("\n"); 743 #endif 744 diff = (resp[2] ^ sc->sc_env_old ) & sc->sc_env_mask; 745 if (diff == 0) goto done; 746 sc->sc_env_old = resp[2]; 747 if (diff & PMU_ENV_LID_CLOSED) { 748 sc->sc_lid_closed = (resp[2] & PMU_ENV_LID_CLOSED) != 0; 749 atomic_or_32(&sc->sc_pending, PMU_EV_LID); 750 cv_signal(&sc->sc_event); 751 } 752 if (diff & PMU_ENV_POWER_BUTTON) { 753 sc->sc_button = (resp[2] & PMU_ENV_POWER_BUTTON) != 0; 754 atomic_or_32(&sc->sc_pending, PMU_EV_BUTTON); 755 cv_signal(&sc->sc_event); 756 } 757 goto done; 758 } 759 if (resp[1] & PMU_INT_TICK) { 760 /* don't bother */ 761 goto done; 762 } 763 764 /* unknown interrupt code?! */ 765 #ifdef PMU_DEBUG 766 printf("pmu intr: %02x:", resp[1]); 767 for (i = 2; i < len; i++) 768 printf(" %02x", resp[i]); 769 printf("\n"); 770 #endif 771 done: 772 return 1; 773 } 774 775 #define DIFF19041970 2082844800 776 777 static int 778 pmu_todr_get(todr_chip_handle_t tch, struct timeval *tvp) 779 { 780 struct pmu_softc *sc = device_private(tch->todr_dev); 781 uint32_t sec; 782 int count = 10; 783 int ok = FALSE; 784 uint8_t resp[16]; 785 786 DPRINTF("pmu_todr_get\n"); 787 while ((count > 0) && (!ok)) { 788 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp); 789 790 memcpy(&sec, &resp[1], 4); 791 tvp->tv_sec = sec - DIFF19041970; 792 ok = (sec > DIFF19041970) && (sec < 0xf0000000); 793 if (!ok) aprint_error_dev(sc->sc_dev, 794 "got garbage from rtc (%08x)\n", sec); 795 count--; 796 } 797 if (count == 0) { 798 aprint_error_dev(sc->sc_dev, 799 "unable to get a sane time value\n"); 800 tvp->tv_sec = 0; 801 } 802 DPRINTF("tod: %" PRIo64 "\n", tvp->tv_sec); 803 tvp->tv_usec = 0; 804 return 0; 805 } 806 807 static int 808 pmu_todr_set(todr_chip_handle_t tch, struct timeval *tvp) 809 { 810 struct pmu_softc *sc = device_private(tch->todr_dev); 811 uint32_t sec; 812 uint8_t resp[16]; 813 814 sec = tvp->tv_sec + DIFF19041970; 815 if (pmu_send(sc, PMU_SET_RTC, 4, (uint8_t *)&sec, 16, resp) >= 0) 816 return 0; 817 return -1; 818 } 819 820 void 821 pmu_poweroff(void) 822 { 823 struct pmu_softc *sc; 824 uint8_t cmd[] = {'M', 'A', 'T', 'T'}; 825 uint8_t resp[16]; 826 827 if (pmu0 == NULL) 828 return; 829 sc = pmu0; 830 if (pmu_send(sc, PMU_POWER_OFF, 4, cmd, 16, resp) >= 0) 831 while (1); 832 } 833 834 void 835 pmu_restart(void) 836 { 837 struct pmu_softc *sc; 838 uint8_t resp[16]; 839 840 if (pmu0 == NULL) 841 return; 842 sc = pmu0; 843 if (pmu_send(sc, PMU_RESET_CPU, 0, NULL, 16, resp) >= 0) 844 while (1); 845 } 846 847 void 848 pmu_modem(int on) 849 { 850 struct pmu_softc *sc; 851 uint8_t resp[16], cmd[2] = {0, 0}; 852 853 if (pmu0 == NULL) 854 return; 855 856 sc = pmu0; 857 cmd[0] = PMU_POW0_MODEM | (on ? PMU_POW0_ON : 0); 858 pmu_send(sc, PMU_POWER_CTRL0, 1, cmd, 16, resp); 859 } 860 861 static void 862 pmu_autopoll(void *cookie, int flag) 863 { 864 struct pmu_softc *sc = cookie; 865 /* magical incantation to re-enable autopolling */ 866 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (flag >> 8) & 0xff, flag & 0xff}; 867 uint8_t resp[16]; 868 869 if (sc->sc_autopoll == flag) 870 return; 871 872 if (flag) { 873 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 874 } else { 875 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp); 876 } 877 sc->sc_autopoll = flag & 0xffff; 878 } 879 880 static int 881 pmu_adb_handler(void *cookie, int len, uint8_t *data) 882 { 883 struct pmu_softc *sc = cookie; 884 uint8_t resp[16]; 885 886 if (sc->sc_adb_handler != NULL) { 887 sc->sc_adb_handler(sc->sc_adb_cookie, len, data); 888 /* 889 * the PMU will turn off autopolling after each LISTEN so we 890 * need to re-enable it here whenever we receive an ACK for a 891 * LISTEN command 892 */ 893 if ((data[1] & 0x0c) == 0x08) { 894 uint8_t cmd[] = {0, 0x86, (sc->sc_autopoll >> 8) & 0xff, 895 sc->sc_autopoll & 0xff}; 896 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp); 897 } 898 return 0; 899 } 900 return -1; 901 } 902 903 static int 904 pmu_adb_send(void *cookie, int poll, int command, int len, uint8_t *data) 905 { 906 struct pmu_softc *sc = cookie; 907 int i; 908 uint8_t packet[16], resp[16]; 909 910 /* construct an ADB command packet and send it */ 911 packet[0] = command; 912 packet[1] = 0; 913 packet[2] = len; 914 for (i = 0; i < len; i++) 915 packet[i + 3] = data[i]; 916 (void)pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp); 917 918 return 0; 919 } 920 921 static int 922 pmu_adb_set_handler(void *cookie, void (*handler)(void *, int, uint8_t *), 923 void *hcookie) 924 { 925 struct pmu_softc *sc = cookie; 926 927 /* register a callback for incoming ADB messages */ 928 sc->sc_adb_handler = handler; 929 sc->sc_adb_cookie = hcookie; 930 return 0; 931 } 932 933 static int 934 pmu_i2c_exec(void *cookie, i2c_op_t op, i2c_addr_t addr, const void *_send, 935 size_t send_len, void *_recv, size_t recv_len, int flags) 936 { 937 struct pmu_softc *sc = cookie; 938 const uint8_t *send = _send; 939 const uint8_t *recv = _recv; 940 uint8_t command[64] = {1, /* bus number */ 941 PMU_I2C_MODE_SIMPLE, 942 0, /* bus2 */ 943 addr, 944 0, /* sub address */ 945 0, /* comb address */ 946 0, /* count */ 947 0 /* data */ 948 }; 949 uint8_t resp[16]; 950 int len, rw; 951 952 rw = (addr & 0x7f) << 1; 953 command[3] = rw; 954 /* see if we're supposed to read */ 955 if (I2C_OP_READ_P(op)) { 956 if (send_len == 1) { 957 command[1] = PMU_I2C_MODE_COMBINED; 958 command[4] = *send; 959 command[5] = rw | 1; 960 command[6] = recv_len; 961 if (sc->sc_is_rackmac) delay(20000); 962 len = pmu_send(sc, PMU_I2C_CMD, 7, command, 16, resp); 963 DPRINTF("resp1(%d): %2x %2x ", len, resp[0], resp[1]); 964 command[0] = 0; 965 int ok = 0; 966 int bail = 10; 967 while ((!ok) && (bail > 0)) { 968 len = pmu_send(sc, PMU_I2C_CMD, 1, command, 16, resp); 969 if (resp[1] != 0xfe) { 970 ok = 1; 971 } else delay(10000); 972 bail--; 973 } 974 #ifdef PMU_DEBUG 975 if (bail < 9) printf("bail %d\n", bail); 976 #endif 977 } else { 978 command[6] = send_len; 979 memcpy(&command[7], send, send_len); 980 /* 981 * Xserve G4's PMU needs these, if we send i2c commands back to 982 * back we get busy responses. 983 * No such problem on Minis, which have temperature sensors 984 * here. 985 */ 986 if (sc->sc_is_rackmac) delay(20000); 987 len = pmu_send(sc, PMU_I2C_CMD, send_len + 7, command, 16, resp); 988 DPRINTF("resp1(%d): %2x %2x ", len, resp[0], resp[1]); 989 rw |= 1; 990 command[3] = rw; 991 command[6] = recv_len; 992 if (sc->sc_is_rackmac) delay(20000); 993 len = pmu_send(sc, PMU_I2C_CMD, 7, command, 16, resp); 994 DPRINTF("resp2(%d): %2x %2x ", len, resp[0], resp[1]); 995 command[0] = 0; 996 int ok = 0; 997 int bail = 10; 998 while ((!ok) && (bail > 0)) { 999 len = pmu_send(sc, PMU_I2C_CMD, 1, command, 16, resp); 1000 if (resp[1] != 0xfe) { 1001 ok = 1; 1002 } else delay(10000); 1003 bail--; 1004 } 1005 #ifdef PMU_DEBUG 1006 if (bail < 9) printf("bail %d\n", bail); 1007 #endif 1008 } 1009 DPRINTF("resp3(%d): %2x %2x %2x ", len, resp[0], resp[1], 1010 resp[2]); 1011 if ((len - 2) != recv_len) { 1012 DPRINTF("%s: %s(%d) - got %d\n", 1013 device_xname(sc->sc_dev), 1014 __func__, recv_len, len - 2); 1015 return -1; 1016 } 1017 memcpy(_recv, &resp[2], len - 2); 1018 return 0; 1019 } else { 1020 int clen = send_len + recv_len; 1021 uint8_t *dptr = &command[7]; 1022 if (clen > 57) return -1; 1023 command[6] = clen; 1024 memcpy(dptr, send, send_len); 1025 if (recv_len > 0) { 1026 dptr += send_len; 1027 memcpy(dptr, recv, recv_len); 1028 } 1029 len = clen + 7; 1030 DPRINTF("pmu_i2c_exec(%02x, %d)\n", addr, send_len); 1031 1032 if (sc->sc_is_rackmac) delay(20000); 1033 len = pmu_send(sc, PMU_I2C_CMD, len, command, 16, resp); 1034 DPRINTF("resp(%d): %2x %2x\n", len, resp[0], resp[1]); 1035 1036 if (resp[1] != PMU_I2C_STATUS_OK) { 1037 DPRINTF("%s: iic error %d\n", __func__, resp[1]); 1038 return -1; 1039 } 1040 } 1041 return 0; 1042 } 1043 1044 static void 1045 pmu_eject_card(struct pmu_softc *sc, int socket) 1046 { 1047 uint8_t buf[] = {socket | 4}; 1048 uint8_t res[4]; 1049 1050 atomic_and_32(&sc->sc_pending, ~socket); 1051 pmu_send(sc, PMU_EJECT_PCMCIA, 1, buf, 4, res); 1052 } 1053 1054 static void 1055 pmu_update_brightness(struct pmu_softc *sc) 1056 { 1057 int val; 1058 uint8_t cmd[2], resp[16]; 1059 1060 if (sc->sc_brightness == sc->sc_brightness_wanted) 1061 return; 1062 1063 if ((sc->sc_flags & PMU_HAS_BACKLIGHT_CONTROL) == 0) { 1064 1065 aprint_normal_dev(sc->sc_dev, 1066 "this PMU doesn't support backlight control\n"); 1067 sc->sc_brightness = sc->sc_brightness_wanted; 1068 return; 1069 } 1070 1071 if (sc->sc_brightness_wanted == 0) { 1072 1073 /* turn backlight off completely */ 1074 cmd[0] = PMU_POW_OFF | PMU_POW_BACKLIGHT; 1075 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 1076 sc->sc_brightness = sc->sc_brightness_wanted; 1077 1078 /* don't bother with brightness */ 1079 return; 1080 } 1081 1082 /* turn backlight on if needed */ 1083 if (sc->sc_brightness == 0) { 1084 cmd[0] = PMU_POW_ON | PMU_POW_BACKLIGHT; 1085 pmu_send(sc, PMU_POWER_CTRL, 1, cmd, 16, resp); 1086 } 1087 1088 DPRINTF("pmu_update_brightness: %d -> %d\n", sc->sc_brightness, 1089 sc->sc_brightness_wanted); 1090 1091 val = 0x7f - (sc->sc_brightness_wanted >> 1); 1092 if (val < 0x08) 1093 val = 0x08; 1094 if (val > 0x78) 1095 val = 0x78; 1096 cmd[0] = val; 1097 pmu_send(sc, PMU_SET_BRIGHTNESS, 1, cmd, 16, resp); 1098 1099 sc->sc_brightness = sc->sc_brightness_wanted; 1100 } 1101 1102 static void 1103 pmu_thread(void *cookie) 1104 { 1105 struct pmu_softc *sc = cookie; 1106 //time_t time_bat = time_second; 1107 int ticks = hz, i; 1108 1109 while (1) { 1110 mutex_enter(&sc->sc_evmtx); 1111 cv_timedwait(&sc->sc_event, &sc->sc_evmtx, ticks); 1112 if ((sc->sc_pending & 3) != 0) { 1113 DPRINTF("eject %d\n", sc->sc_pending & 3); 1114 for (i = 1; i < 3; i++) { 1115 if (i & sc->sc_pending) 1116 pmu_eject_card(sc, i); 1117 } 1118 } 1119 mutex_exit(&sc->sc_evmtx); 1120 /* see if we need to update brightness */ 1121 if (sc->sc_brightness_wanted != sc->sc_brightness) { 1122 pmu_update_brightness(sc); 1123 } 1124 1125 /* see if we need to update audio volume */ 1126 if (sc->sc_volume_wanted != sc->sc_volume) { 1127 #if 0 1128 set_volume(sc->sc_volume_wanted); 1129 #endif 1130 sc->sc_volume = sc->sc_volume_wanted; 1131 } 1132 1133 if (sc->sc_pending & PMU_EV_LID) { 1134 atomic_and_32(&sc->sc_pending, ~PMU_EV_LID); 1135 sysmon_pswitch_event(&sc->sc_lidswitch, 1136 sc->sc_lid_closed ? PSWITCH_EVENT_PRESSED : 1137 PSWITCH_EVENT_RELEASED); 1138 } 1139 1140 if (sc->sc_pending & PMU_EV_BUTTON) { 1141 atomic_and_32(&sc->sc_pending, ~PMU_EV_BUTTON); 1142 sysmon_pswitch_event(&sc->sc_powerbutton, 1143 sc->sc_button ? PSWITCH_EVENT_PRESSED : 1144 PSWITCH_EVENT_RELEASED); 1145 } 1146 1147 if (sc->sc_callback != NULL) 1148 sc->sc_callback(sc->sc_cb_cookie); 1149 } 1150 } 1151 1152 static int 1153 pmu_print(void *aux, const char *what) 1154 { 1155 1156 return 0; 1157 } 1158 1159 static void 1160 pmu_attach_legacy_battery(struct pmu_softc *sc) 1161 { 1162 struct battery_attach_args baa; 1163 1164 baa.baa_type = BATTERY_TYPE_LEGACY; 1165 baa.baa_pmu_ops = &sc->sc_pmu_ops; 1166 config_found(sc->sc_dev, &baa, pmu_print, 1167 CFARGS(.iattr = "pmu_bus")); 1168 } 1169 1170 static void 1171 pmu_attach_smart_battery(struct pmu_softc *sc, int num) 1172 { 1173 struct battery_attach_args baa; 1174 1175 baa.baa_type = BATTERY_TYPE_SMART; 1176 baa.baa_pmu_ops = &sc->sc_pmu_ops; 1177 baa.baa_num = num; 1178 config_found(sc->sc_dev, &baa, pmu_print, 1179 CFARGS(.iattr = "pmu_bus")); 1180 } 1181
Indexes created Sat Sep 27 22:09:54 GMT 2025