1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
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/param.h>
32 #include <sys/systm.h>
33 #include <sys/module.h>
34 #include <sys/bus.h>
35 #include <sys/conf.h>
36 #include <sys/eventhandler.h>
37 #include <sys/kernel.h>
38 #include <sys/kthread.h>
39 #include <sys/lock.h>
40 #include <sys/mutex.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 EARLY_DRIVER_MODULE(pmu, macio, pmu_driver, 0, 0, BUS_PASS_RESOURCE);
155 DRIVER_MODULE(adb, pmu, adb_driver, 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 {0,0}
165 };
166
167 static driver_t pmuextint_driver = {
168 "pmuextint",
169 pmuextint_methods,
170 0
171 };
172
173 EARLY_DRIVER_MODULE(pmuextint, macgpio, pmuextint_driver, 0, 0,
174 BUS_PASS_RESOURCE);
175
176 /* Make sure uhid is loaded, as it turns off some of the ADB emulation */
177 MODULE_DEPEND(pmu, usb, 1, 1, 1);
178
179 static void pmu_intr(void *arg);
180 static void pmu_in(struct pmu_softc *sc);
181 static void pmu_out(struct pmu_softc *sc);
182 static void pmu_ack_on(struct pmu_softc *sc);
183 static void pmu_ack_off(struct pmu_softc *sc);
184 static int pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg,
185 int rlen, uint8_t *out_msg);
186 static uint8_t pmu_read_reg(struct pmu_softc *sc, u_int offset);
187 static void pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value);
188 static int pmu_intr_state(struct pmu_softc *);
189
190 /* these values shows that number of data returned after 'send' cmd is sent */
191 static signed char pm_send_cmd_type[] = {
192 -1, -1, -1, -1, -1, -1, -1, -1,
193 -1, -1, -1, -1, -1, -1, -1, -1,
194 0x01, 0x01, -1, -1, -1, -1, -1, -1,
195 0x00, 0x00, -1, -1, -1, -1, -1, 0x00,
196 -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1,
197 0x00, -1, -1, -1, -1, -1, -1, -1,
198 0x04, 0x14, -1, 0x03, -1, -1, -1, -1,
199 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1,
200 0x01, 0x01, -1, -1, -1, -1, -1, -1,
201 0x00, 0x00, -1, -1, 0x01, -1, -1, -1,
202 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01,
203 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1,
204 0x02, -1, -1, -1, -1, -1, -1, -1,
205 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1,
206 0x01, 0x01, 0x01, -1, -1, -1, -1, -1,
207 0x00, 0x00, -1, -1, -1, 0x05, 0x04, 0x04,
208 0x04, -1, 0x00, -1, -1, -1, -1, -1,
209 0x00, -1, -1, -1, -1, -1, -1, -1,
210 0x01, 0x02, -1, -1, -1, -1, -1, -1,
211 0x00, 0x00, -1, -1, -1, -1, -1, -1,
212 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1,
213 0x01, 0x01, 0x03, 0x02, -1, -1, -1, -1,
214 -1, -1, -1, -1, -1, -1, -1, -1,
215 -1, -1, -1, -1, -1, -1, -1, -1,
216 -1, -1, -1, -1, -1, -1, -1, -1,
217 -1, -1, -1, -1, -1, -1, -1, -1,
218 0x00, -1, -1, -1, -1, -1, -1, -1,
219 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1,
220 -1, 0x04, 0x00, -1, -1, -1, -1, -1,
221 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00,
222 -1, -1, -1, -1, -1, -1, -1, -1,
223 -1, -1, -1, -1, -1, -1, -1, -1
224 };
225
226 /* these values shows that number of data returned after 'receive' cmd is sent */
227 static signed char pm_receive_cmd_type[] = {
228 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
229 -1, -1, -1, -1, -1, -1, -1, -1,
230 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
231 0x02, 0x02, -1, -1, -1, -1, -1, 0x00,
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 0x05, 0x15, -1, 0x02, -1, -1, -1, -1,
236 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
237 0x02, 0x02, -1, -1, -1, -1, -1, -1,
238 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
239 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1,
240 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
241 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1,
242 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
243 -1, -1, -1, -1, -1, 0x01, 0x01, 0x01,
244 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
245 0x06, -1, -1, -1, -1, -1, -1, -1,
246 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
247 0x02, 0x02, -1, -1, -1, -1, -1, -1,
248 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
249 0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1,
250 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
251 -1, -1, -1, -1, -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 0x02, 0x02, -1, -1, 0x02, -1, -1, -1,
256 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
257 -1, -1, 0x02, -1, -1, -1, -1, 0x00,
258 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
259 -1, -1, -1, -1, -1, -1, -1, -1,
260 };
261
262 static int pmu_battmon_enabled = 1;
263 static struct proc *pmubattproc;
264 static struct kproc_desc pmu_batt_kp = {
265 "pmu_batt",
266 pmu_battquery_proc,
267 &pmubattproc
268 };
269
270 /* We only have one of each device, so globals are safe */
271 static device_t pmu = NULL;
272 static device_t pmu_extint = NULL;
273
274 static int
pmuextint_probe(device_t dev)275 pmuextint_probe(device_t dev)
276 {
277 const char *type = ofw_bus_get_type(dev);
278
279 if (strcmp(type, "extint-gpio1") != 0)
280 return (ENXIO);
281
282 device_set_desc(dev, "Apple PMU99 External Interrupt");
283 return (0);
284 }
285
286 static int
pmu_probe(device_t dev)287 pmu_probe(device_t dev)
288 {
289 const char *type = ofw_bus_get_type(dev);
290
291 if (strcmp(type, "via-pmu") != 0)
292 return (ENXIO);
293
294 device_set_desc(dev, "Apple PMU99 Controller");
295 return (0);
296 }
297
298 static int
setup_pmu_intr(device_t dev,device_t extint)299 setup_pmu_intr(device_t dev, device_t extint)
300 {
301 struct pmu_softc *sc;
302 sc = device_get_softc(dev);
303
304 sc->sc_irqrid = 0;
305 sc->sc_irq = bus_alloc_resource_any(extint, SYS_RES_IRQ, &sc->sc_irqrid,
306 RF_ACTIVE);
307 if (sc->sc_irq == NULL) {
308 device_printf(dev, "could not allocate interrupt\n");
309 return (ENXIO);
310 }
311
312 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC | INTR_MPSAFE
313 | INTR_ENTROPY, NULL, pmu_intr, dev, &sc->sc_ih) != 0) {
314 device_printf(dev, "could not setup interrupt\n");
315 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid,
316 sc->sc_irq);
317 return (ENXIO);
318 }
319
320 return (0);
321 }
322
323 static int
pmuextint_attach(device_t dev)324 pmuextint_attach(device_t dev)
325 {
326 pmu_extint = dev;
327 if (pmu)
328 return (setup_pmu_intr(pmu,dev));
329
330 return (0);
331 }
332
333 static int
pmu_attach(device_t dev)334 pmu_attach(device_t dev)
335 {
336 struct pmu_softc *sc;
337
338 int i;
339 uint8_t reg;
340 uint8_t cmd[2] = {2, 0};
341 uint8_t resp[16];
342 phandle_t node,child;
343 struct sysctl_ctx_list *ctx;
344 struct sysctl_oid *tree;
345
346 sc = device_get_softc(dev);
347 sc->sc_dev = dev;
348
349 sc->sc_memrid = 0;
350 sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
351 &sc->sc_memrid, RF_ACTIVE);
352
353 mtx_init(&sc->sc_mutex,"pmu",NULL,MTX_DEF | MTX_RECURSE);
354
355 if (sc->sc_memr == NULL) {
356 device_printf(dev, "Could not alloc mem resource!\n");
357 return (ENXIO);
358 }
359
360 /*
361 * Our interrupt is attached to a GPIO pin. Depending on probe order,
362 * we may not have found it yet. If we haven't, it will find us, and
363 * attach our interrupt then.
364 */
365 pmu = dev;
366 if (pmu_extint != NULL) {
367 if (setup_pmu_intr(dev,pmu_extint) != 0)
368 return (ENXIO);
369 }
370
371 sc->sc_autopoll = 0;
372 sc->sc_batteries = 0;
373 sc->adb_bus = NULL;
374 sc->sc_leddev = NULL;
375
376 /* Init PMU */
377
378 pmu_write_reg(sc, vBufB, pmu_read_reg(sc, vBufB) | vPB4);
379 pmu_write_reg(sc, vDirB, (pmu_read_reg(sc, vDirB) | vPB4) & ~vPB3);
380
381 reg = PMU_DEFAULTS;
382 pmu_send(sc, PMU_SET_IMASK, 1, ®, 16, resp);
383
384 pmu_write_reg(sc, vIER, 0x94); /* make sure VIA interrupts are on */
385
386 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp);
387 pmu_send(sc, PMU_GET_VERSION, 0, cmd, 16, resp);
388
389 /* Initialize child buses (ADB) */
390 node = ofw_bus_get_node(dev);
391
392 for (child = OF_child(node); child != 0; child = OF_peer(child)) {
393 char name[32];
394
395 memset(name, 0, sizeof(name));
396 OF_getprop(child, "name", name, sizeof(name));
397
398 if (bootverbose)
399 device_printf(dev, "PMU child <%s>\n",name);
400
401 if (strncmp(name, "adb", 4) == 0) {
402 sc->adb_bus = device_add_child(dev,"adb",-1);
403 }
404
405 if (strncmp(name, "power-mgt", 9) == 0) {
406 uint32_t prim_info[9];
407
408 if (OF_getprop(child, "prim-info", prim_info,
409 sizeof(prim_info)) >= 7)
410 sc->sc_batteries = (prim_info[6] >> 16) & 0xff;
411
412 if (bootverbose && sc->sc_batteries > 0)
413 device_printf(dev, "%d batteries detected\n",
414 sc->sc_batteries);
415 }
416 }
417
418 /*
419 * Set up sysctls
420 */
421
422 ctx = device_get_sysctl_ctx(dev);
423 tree = device_get_sysctl_tree(dev);
424
425 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
426 "server_mode", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, sc, 0,
427 pmu_server_mode, "I", "Enable reboot after power failure");
428
429 if (sc->sc_batteries > 0) {
430 struct sysctl_oid *oid, *battroot;
431 char battnum[2];
432
433 /* Only start the battery monitor if we have a battery. */
434 kproc_start(&pmu_batt_kp);
435 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
436 "monitor_batteries",
437 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
438 pmu_battmon, "I", "Post battery events to devd");
439
440 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
441 "acline", CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
442 0, pmu_acline_state, "I", "AC Line Status");
443
444 battroot = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
445 "batteries", CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
446 "Battery Information");
447
448 for (i = 0; i < sc->sc_batteries; i++) {
449 battnum[0] = i + '0';
450 battnum[1] = '\0';
451
452 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(battroot),
453 OID_AUTO, battnum, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
454 "Battery Information");
455
456 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
457 "present",
458 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
459 PMU_BATSYSCTL_PRESENT | i, pmu_battquery_sysctl,
460 "I", "Battery present");
461 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
462 "charging",
463 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, 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",
468 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
469 PMU_BATSYSCTL_CHARGE | i, pmu_battquery_sysctl,
470 "I", "Battery charge (mAh)");
471 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
472 "maxcharge",
473 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, 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",
478 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
479 PMU_BATSYSCTL_CURRENT | i, pmu_battquery_sysctl,
480 "I", "Battery discharge rate (mA)");
481 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
482 "voltage",
483 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
484 PMU_BATSYSCTL_VOLTAGE | i, pmu_battquery_sysctl,
485 "I", "Battery voltage (mV)");
486
487 /* Knobs for mental compatibility with ACPI */
488
489 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
490 "time",
491 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
492 PMU_BATSYSCTL_TIME | i, pmu_battquery_sysctl,
493 "I", "Time Remaining (minutes)");
494 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
495 "life",
496 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
497 PMU_BATSYSCTL_LIFE | i, pmu_battquery_sysctl,
498 "I", "Capacity remaining (percent)");
499 }
500 }
501
502 /*
503 * Set up LED interface
504 */
505
506 sc->sc_leddev = led_create(pmu_set_sleepled, sc, "sleepled");
507
508 /*
509 * Register RTC
510 */
511
512 clock_register(dev, 1000);
513
514 /*
515 * Register power control handler
516 */
517 EVENTHANDLER_REGISTER(shutdown_final, pmu_shutdown, sc,
518 SHUTDOWN_PRI_LAST);
519
520 return (bus_generic_attach(dev));
521 }
522
523 static int
pmu_detach(device_t dev)524 pmu_detach(device_t dev)
525 {
526 struct pmu_softc *sc;
527
528 sc = device_get_softc(dev);
529
530 if (sc->sc_leddev != NULL)
531 led_destroy(sc->sc_leddev);
532
533 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
534 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, sc->sc_irq);
535 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid, sc->sc_memr);
536 mtx_destroy(&sc->sc_mutex);
537
538 return (bus_generic_detach(dev));
539 }
540
541 static uint8_t
pmu_read_reg(struct pmu_softc * sc,u_int offset)542 pmu_read_reg(struct pmu_softc *sc, u_int offset)
543 {
544 return (bus_read_1(sc->sc_memr, offset));
545 }
546
547 static void
pmu_write_reg(struct pmu_softc * sc,u_int offset,uint8_t value)548 pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value)
549 {
550 bus_write_1(sc->sc_memr, offset, value);
551 }
552
553 static int
pmu_send_byte(struct pmu_softc * sc,uint8_t data)554 pmu_send_byte(struct pmu_softc *sc, uint8_t data)
555 {
556
557 pmu_out(sc);
558 pmu_write_reg(sc, vSR, data);
559 pmu_ack_off(sc);
560 /* wait for intr to come up */
561 /* XXX should add a timeout and bail if it expires */
562 do {} while (pmu_intr_state(sc) == 0);
563 pmu_ack_on(sc);
564 do {} while (pmu_intr_state(sc));
565 pmu_ack_on(sc);
566 return 0;
567 }
568
569 static inline int
pmu_read_byte(struct pmu_softc * sc,uint8_t * data)570 pmu_read_byte(struct pmu_softc *sc, uint8_t *data)
571 {
572 pmu_in(sc);
573 (void)pmu_read_reg(sc, vSR);
574 pmu_ack_off(sc);
575 /* wait for intr to come up */
576 do {} while (pmu_intr_state(sc) == 0);
577 pmu_ack_on(sc);
578 do {} while (pmu_intr_state(sc));
579 *data = pmu_read_reg(sc, vSR);
580 return 0;
581 }
582
583 static int
pmu_intr_state(struct pmu_softc * sc)584 pmu_intr_state(struct pmu_softc *sc)
585 {
586 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0);
587 }
588
589 static int
pmu_send(void * cookie,int cmd,int length,uint8_t * in_msg,int rlen,uint8_t * out_msg)590 pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen,
591 uint8_t *out_msg)
592 {
593 struct pmu_softc *sc = cookie;
594 int i, rcv_len = -1;
595 uint8_t out_len, intreg;
596
597 intreg = pmu_read_reg(sc, vIER);
598 intreg &= 0x10;
599 pmu_write_reg(sc, vIER, intreg);
600
601 /* wait idle */
602 do {} while (pmu_intr_state(sc));
603
604 /* send command */
605 pmu_send_byte(sc, cmd);
606
607 /* send length if necessary */
608 if (pm_send_cmd_type[cmd] < 0) {
609 pmu_send_byte(sc, length);
610 }
611
612 for (i = 0; i < length; i++) {
613 pmu_send_byte(sc, in_msg[i]);
614 }
615
616 /* see if there's data to read */
617 rcv_len = pm_receive_cmd_type[cmd];
618 if (rcv_len == 0)
619 goto done;
620
621 /* read command */
622 if (rcv_len == 1) {
623 pmu_read_byte(sc, out_msg);
624 goto done;
625 } else
626 out_msg[0] = cmd;
627 if (rcv_len < 0) {
628 pmu_read_byte(sc, &out_len);
629 rcv_len = out_len + 1;
630 }
631 for (i = 1; i < min(rcv_len, rlen); i++)
632 pmu_read_byte(sc, &out_msg[i]);
633
634 done:
635 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90);
636
637 return rcv_len;
638 }
639
640 static u_int
pmu_poll(device_t dev)641 pmu_poll(device_t dev)
642 {
643 pmu_intr(dev);
644 return (0);
645 }
646
647 static void
pmu_in(struct pmu_softc * sc)648 pmu_in(struct pmu_softc *sc)
649 {
650 uint8_t reg;
651
652 reg = pmu_read_reg(sc, vACR);
653 reg &= ~vSR_OUT;
654 reg |= 0x0c;
655 pmu_write_reg(sc, vACR, reg);
656 }
657
658 static void
pmu_out(struct pmu_softc * sc)659 pmu_out(struct pmu_softc *sc)
660 {
661 uint8_t reg;
662
663 reg = pmu_read_reg(sc, vACR);
664 reg |= vSR_OUT;
665 reg |= 0x0c;
666 pmu_write_reg(sc, vACR, reg);
667 }
668
669 static void
pmu_ack_off(struct pmu_softc * sc)670 pmu_ack_off(struct pmu_softc *sc)
671 {
672 uint8_t reg;
673
674 reg = pmu_read_reg(sc, vBufB);
675 reg &= ~vPB4;
676 pmu_write_reg(sc, vBufB, reg);
677 }
678
679 static void
pmu_ack_on(struct pmu_softc * sc)680 pmu_ack_on(struct pmu_softc *sc)
681 {
682 uint8_t reg;
683
684 reg = pmu_read_reg(sc, vBufB);
685 reg |= vPB4;
686 pmu_write_reg(sc, vBufB, reg);
687 }
688
689 static void
pmu_intr(void * arg)690 pmu_intr(void *arg)
691 {
692 device_t dev;
693 struct pmu_softc *sc;
694
695 unsigned int len;
696 uint8_t resp[16];
697 uint8_t junk[16];
698
699 dev = (device_t)arg;
700 sc = device_get_softc(dev);
701
702 mtx_lock(&sc->sc_mutex);
703
704 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */
705 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp);
706
707 mtx_unlock(&sc->sc_mutex);
708
709 if ((len < 1) || (resp[1] == 0)) {
710 return;
711 }
712
713 if (resp[1] & PMU_INT_ADB) {
714 /*
715 * the PMU will turn off autopolling after each command that
716 * it did not issue, so we assume any but TALK R0 is ours and
717 * re-enable autopoll here whenever we receive an ACK for a
718 * non TR0 command.
719 */
720 mtx_lock(&sc->sc_mutex);
721
722 if ((resp[2] & 0x0f) != (ADB_COMMAND_TALK << 2)) {
723 if (sc->sc_autopoll) {
724 uint8_t cmd[] = {0, PMU_SET_POLL_MASK,
725 (sc->sc_autopoll >> 8) & 0xff,
726 sc->sc_autopoll & 0xff};
727
728 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, junk);
729 }
730 }
731
732 mtx_unlock(&sc->sc_mutex);
733
734 adb_receive_raw_packet(sc->adb_bus,resp[1],resp[2],
735 len - 3,&resp[3]);
736 }
737 if (resp[1] & PMU_INT_ENVIRONMENT) {
738 /* if the lid was just closed, notify devd. */
739 if ((resp[2] & PMU_ENV_LID_CLOSED) && (!sc->lid_closed)) {
740 sc->lid_closed = 1;
741 devctl_notify("PMU", "lid", "close", NULL);
742 }
743 else if (!(resp[2] & PMU_ENV_LID_CLOSED) && (sc->lid_closed)) {
744 /* if the lid was just opened, notify devd. */
745 sc->lid_closed = 0;
746 devctl_notify("PMU", "lid", "open", NULL);
747 }
748 if (resp[2] & PMU_ENV_POWER)
749 devctl_notify("PMU", "Button", "pressed", NULL);
750 }
751 }
752
753 static u_int
pmu_adb_send(device_t dev,u_char command_byte,int len,u_char * data,u_char poll)754 pmu_adb_send(device_t dev, u_char command_byte, int len, u_char *data,
755 u_char poll)
756 {
757 struct pmu_softc *sc = device_get_softc(dev);
758 int i;
759 uint8_t packet[16], resp[16];
760
761 /* construct an ADB command packet and send it */
762
763 packet[0] = command_byte;
764
765 packet[1] = 0;
766 packet[2] = len;
767 for (i = 0; i < len; i++)
768 packet[i + 3] = data[i];
769
770 mtx_lock(&sc->sc_mutex);
771 pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp);
772 mtx_unlock(&sc->sc_mutex);
773
774 if (poll)
775 pmu_poll(dev);
776
777 return 0;
778 }
779
780 static u_int
pmu_adb_autopoll(device_t dev,uint16_t mask)781 pmu_adb_autopoll(device_t dev, uint16_t mask)
782 {
783 struct pmu_softc *sc = device_get_softc(dev);
784
785 /* magical incantation to re-enable autopolling */
786 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (mask >> 8) & 0xff, mask & 0xff};
787 uint8_t resp[16];
788
789 mtx_lock(&sc->sc_mutex);
790
791 if (sc->sc_autopoll == mask) {
792 mtx_unlock(&sc->sc_mutex);
793 return 0;
794 }
795
796 sc->sc_autopoll = mask & 0xffff;
797
798 if (mask)
799 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp);
800 else
801 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp);
802
803 mtx_unlock(&sc->sc_mutex);
804
805 return 0;
806 }
807
808 static void
pmu_shutdown(void * xsc,int howto)809 pmu_shutdown(void *xsc, int howto)
810 {
811 struct pmu_softc *sc = xsc;
812 uint8_t cmd[] = {'M', 'A', 'T', 'T'};
813
814 if ((howto & RB_POWEROFF) != 0)
815 pmu_send(sc, PMU_POWER_OFF, 4, cmd, 0, NULL);
816 else if ((howto & RB_HALT) == 0)
817 pmu_send(sc, PMU_RESET_CPU, 0, NULL, 0, NULL);
818 else
819 return;
820
821 for (;;);
822 }
823
824 static void
pmu_set_sleepled(void * xsc,int onoff)825 pmu_set_sleepled(void *xsc, int onoff)
826 {
827 struct pmu_softc *sc = xsc;
828 uint8_t cmd[] = {4, 0, 0};
829
830 cmd[2] = onoff;
831
832 mtx_lock(&sc->sc_mutex);
833 pmu_send(sc, PMU_SET_SLEEPLED, 3, cmd, 0, NULL);
834 mtx_unlock(&sc->sc_mutex);
835 }
836
837 static int
pmu_server_mode(SYSCTL_HANDLER_ARGS)838 pmu_server_mode(SYSCTL_HANDLER_ARGS)
839 {
840 struct pmu_softc *sc = arg1;
841
842 u_int server_mode = 0;
843 uint8_t getcmd[] = {PMU_PWR_GET_POWERUP_EVENTS};
844 uint8_t setcmd[] = {0, 0, PMU_PWR_WAKEUP_AC_INSERT};
845 uint8_t resp[3];
846 int error, len;
847
848 mtx_lock(&sc->sc_mutex);
849 len = pmu_send(sc, PMU_POWER_EVENTS, 1, getcmd, 3, resp);
850 mtx_unlock(&sc->sc_mutex);
851
852 if (len == 3)
853 server_mode = (resp[2] & PMU_PWR_WAKEUP_AC_INSERT) ? 1 : 0;
854
855 error = sysctl_handle_int(oidp, &server_mode, 0, req);
856
857 if (len != 3)
858 return (EINVAL);
859
860 if (error || !req->newptr)
861 return (error);
862
863 if (server_mode == 1)
864 setcmd[0] = PMU_PWR_SET_POWERUP_EVENTS;
865 else if (server_mode == 0)
866 setcmd[0] = PMU_PWR_CLR_POWERUP_EVENTS;
867 else
868 return (EINVAL);
869
870 setcmd[1] = resp[1];
871
872 mtx_lock(&sc->sc_mutex);
873 pmu_send(sc, PMU_POWER_EVENTS, 3, setcmd, 2, resp);
874 mtx_unlock(&sc->sc_mutex);
875
876 return (0);
877 }
878
879 static int
pmu_query_battery(struct pmu_softc * sc,int batt,struct pmu_battstate * info)880 pmu_query_battery(struct pmu_softc *sc, int batt, struct pmu_battstate *info)
881 {
882 uint8_t reg;
883 uint8_t resp[16];
884 int len;
885
886 reg = batt + 1;
887
888 mtx_lock(&sc->sc_mutex);
889 len = pmu_send(sc, PMU_SMART_BATTERY_STATE, 1, ®, 16, resp);
890 mtx_unlock(&sc->sc_mutex);
891
892 if (len < 3)
893 return (-1);
894
895 /* All PMU battery info replies share a common header:
896 * Byte 1 Payload Format
897 * Byte 2 Battery Flags
898 */
899
900 info->state = resp[2];
901
902 switch (resp[1]) {
903 case 3:
904 case 4:
905 /*
906 * Formats 3 and 4 appear to be the same:
907 * Byte 3 Charge
908 * Byte 4 Max Charge
909 * Byte 5 Current
910 * Byte 6 Voltage
911 */
912
913 info->charge = resp[3];
914 info->maxcharge = resp[4];
915 /* Current can be positive or negative */
916 info->current = (int8_t)resp[5];
917 info->voltage = resp[6];
918 break;
919 case 5:
920 /*
921 * Formats 5 is a wider version of formats 3 and 4
922 * Byte 3-4 Charge
923 * Byte 5-6 Max Charge
924 * Byte 7-8 Current
925 * Byte 9-10 Voltage
926 */
927
928 info->charge = (resp[3] << 8) | resp[4];
929 info->maxcharge = (resp[5] << 8) | resp[6];
930 /* Current can be positive or negative */
931 info->current = (int16_t)((resp[7] << 8) | resp[8]);
932 info->voltage = (resp[9] << 8) | resp[10];
933 break;
934 default:
935 device_printf(sc->sc_dev, "Unknown battery info format (%d)!\n",
936 resp[1]);
937 return (-1);
938 }
939
940 return (0);
941 }
942
943 static void
pmu_battery_notify(struct pmu_battstate * batt,struct pmu_battstate * old)944 pmu_battery_notify(struct pmu_battstate *batt, struct pmu_battstate *old)
945 {
946 char notify_buf[16];
947 int new_acline, old_acline;
948
949 new_acline = (batt->state & PMU_PWR_AC_PRESENT) ? 1 : 0;
950 old_acline = (old->state & PMU_PWR_AC_PRESENT) ? 1 : 0;
951
952 if (new_acline != old_acline) {
953 snprintf(notify_buf, sizeof(notify_buf),
954 "notify=0x%02x", new_acline);
955 devctl_notify("PMU", "POWER", "ACLINE", notify_buf);
956 }
957 }
958
959 static void
pmu_battquery_proc(void)960 pmu_battquery_proc(void)
961 {
962 struct pmu_softc *sc;
963 struct pmu_battstate batt;
964 struct pmu_battstate cur_batt;
965 int error;
966
967 sc = device_get_softc(pmu);
968
969 bzero(&cur_batt, sizeof(cur_batt));
970 while (1) {
971 kproc_suspend_check(curproc);
972 error = pmu_query_battery(sc, 0, &batt);
973 if (error == 0) {
974 pmu_battery_notify(&batt, &cur_batt);
975 cur_batt = batt;
976 }
977 pause("pmu_batt", hz);
978 }
979 }
980
981 static int
pmu_battmon(SYSCTL_HANDLER_ARGS)982 pmu_battmon(SYSCTL_HANDLER_ARGS)
983 {
984 int error, result;
985
986 result = pmu_battmon_enabled;
987
988 error = sysctl_handle_int(oidp, &result, 0, req);
989
990 if (error || !req->newptr)
991 return (error);
992
993 if (!result && pmu_battmon_enabled)
994 error = kproc_suspend(pmubattproc, hz);
995 else if (result && pmu_battmon_enabled == 0)
996 error = kproc_resume(pmubattproc);
997 pmu_battmon_enabled = (result != 0);
998
999 return (error);
1000 }
1001
1002 static int
pmu_acline_state(SYSCTL_HANDLER_ARGS)1003 pmu_acline_state(SYSCTL_HANDLER_ARGS)
1004 {
1005 struct pmu_softc *sc;
1006 struct pmu_battstate batt;
1007 int error, result;
1008
1009 sc = arg1;
1010
1011 /* The PMU treats the AC line status as a property of the battery */
1012 error = pmu_query_battery(sc, 0, &batt);
1013
1014 if (error != 0)
1015 return (error);
1016
1017 result = (batt.state & PMU_PWR_AC_PRESENT) ? 1 : 0;
1018 error = sysctl_handle_int(oidp, &result, 0, req);
1019
1020 return (error);
1021 }
1022
1023 static int
pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS)1024 pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS)
1025 {
1026 struct pmu_softc *sc;
1027 struct pmu_battstate batt;
1028 int error, result;
1029
1030 sc = arg1;
1031
1032 error = pmu_query_battery(sc, arg2 & 0x00ff, &batt);
1033
1034 if (error != 0)
1035 return (error);
1036
1037 switch (arg2 & 0xff00) {
1038 case PMU_BATSYSCTL_PRESENT:
1039 result = (batt.state & PMU_PWR_BATT_PRESENT) ? 1 : 0;
1040 break;
1041 case PMU_BATSYSCTL_CHARGING:
1042 result = (batt.state & PMU_PWR_BATT_CHARGING) ? 1 : 0;
1043 break;
1044 case PMU_BATSYSCTL_CHARGE:
1045 result = batt.charge;
1046 break;
1047 case PMU_BATSYSCTL_MAXCHARGE:
1048 result = batt.maxcharge;
1049 break;
1050 case PMU_BATSYSCTL_CURRENT:
1051 result = batt.current;
1052 break;
1053 case PMU_BATSYSCTL_VOLTAGE:
1054 result = batt.voltage;
1055 break;
1056 case PMU_BATSYSCTL_TIME:
1057 /* Time remaining until full charge/discharge, in minutes */
1058
1059 if (batt.current >= 0)
1060 result = (batt.maxcharge - batt.charge) /* mAh */ * 60
1061 / batt.current /* mA */;
1062 else
1063 result = (batt.charge /* mAh */ * 60)
1064 / (-batt.current /* mA */);
1065 break;
1066 case PMU_BATSYSCTL_LIFE:
1067 /* Battery charge fraction, in percent */
1068 result = (batt.charge * 100) / batt.maxcharge;
1069 break;
1070 default:
1071 /* This should never happen */
1072 result = -1;
1073 }
1074
1075 error = sysctl_handle_int(oidp, &result, 0, req);
1076
1077 return (error);
1078 }
1079
1080 #define DIFF19041970 2082844800
1081
1082 static int
pmu_gettime(device_t dev,struct timespec * ts)1083 pmu_gettime(device_t dev, struct timespec *ts)
1084 {
1085 struct pmu_softc *sc = device_get_softc(dev);
1086 uint8_t resp[16];
1087 uint32_t sec;
1088
1089 mtx_lock(&sc->sc_mutex);
1090 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp);
1091 mtx_unlock(&sc->sc_mutex);
1092
1093 memcpy(&sec, &resp[1], 4);
1094 ts->tv_sec = sec - DIFF19041970;
1095 ts->tv_nsec = 0;
1096
1097 return (0);
1098 }
1099
1100 static int
pmu_settime(device_t dev,struct timespec * ts)1101 pmu_settime(device_t dev, struct timespec *ts)
1102 {
1103 struct pmu_softc *sc = device_get_softc(dev);
1104 uint32_t sec;
1105
1106 sec = ts->tv_sec + DIFF19041970;
1107
1108 mtx_lock(&sc->sc_mutex);
1109 pmu_send(sc, PMU_SET_RTC, sizeof(sec), (uint8_t *)&sec, 0, NULL);
1110 mtx_unlock(&sc->sc_mutex);
1111
1112 return (0);
1113 }
1114
1115 int
pmu_set_speed(int low_speed)1116 pmu_set_speed(int low_speed)
1117 {
1118 struct pmu_softc *sc;
1119 uint8_t sleepcmd[] = {'W', 'O', 'O', 'F', 0};
1120 uint8_t resp[16];
1121
1122 sc = device_get_softc(pmu);
1123 pmu_write_reg(sc, vIER, 0x10);
1124 spinlock_enter();
1125 mtdec(0x7fffffff);
1126 mb();
1127 mtdec(0x7fffffff);
1128
1129 sleepcmd[4] = low_speed;
1130 pmu_send(sc, PMU_CPU_SPEED, 5, sleepcmd, 16, resp);
1131 unin_chip_sleep(NULL, 1);
1132 platform_sleep();
1133 unin_chip_wake(NULL);
1134
1135 mtdec(1); /* Force a decrementer exception */
1136 spinlock_exit();
1137 pmu_write_reg(sc, vIER, 0x90);
1138
1139 return (0);
1140 }
1141