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/eventhandler.h>
40 #include <sys/kernel.h>
41 #include <sys/kthread.h>
42 #include <sys/lock.h>
43 #include <sys/mutex.h>
44 #include <sys/clock.h>
45 #include <sys/proc.h>
46 #include <sys/reboot.h>
47 #include <sys/sysctl.h>
48
49 #include <dev/ofw/ofw_bus.h>
50 #include <dev/ofw/openfirm.h>
51 #include <dev/led/led.h>
52
53 #include <machine/_inttypes.h>
54 #include <machine/bus.h>
55 #include <machine/cpu.h>
56 #include <machine/hid.h>
57 #include <machine/intr_machdep.h>
58 #include <machine/md_var.h>
59 #include <machine/pcb.h>
60 #include <machine/pio.h>
61 #include <machine/resource.h>
62
63 #include <vm/vm.h>
64 #include <vm/pmap.h>
65
66 #include <sys/rman.h>
67
68 #include <dev/adb/adb.h>
69
70 #include "clock_if.h"
71 #include "pmuvar.h"
72 #include "viareg.h"
73 #include "uninorthvar.h" /* For unin_chip_sleep()/unin_chip_wake() */
74
75 #define PMU_DEFAULTS PMU_INT_TICK | PMU_INT_ADB | \
76 PMU_INT_PCEJECT | PMU_INT_SNDBRT | \
77 PMU_INT_BATTERY | PMU_INT_ENVIRONMENT
78
79 /*
80 * Bus interface
81 */
82 static int pmu_probe(device_t);
83 static int pmu_attach(device_t);
84 static int pmu_detach(device_t);
85
86 /*
87 * Clock interface
88 */
89 static int pmu_gettime(device_t dev, struct timespec *ts);
90 static int pmu_settime(device_t dev, struct timespec *ts);
91
92 /*
93 * ADB Interface
94 */
95
96 static u_int pmu_adb_send(device_t dev, u_char command_byte, int len,
97 u_char *data, u_char poll);
98 static u_int pmu_adb_autopoll(device_t dev, uint16_t mask);
99 static u_int pmu_poll(device_t dev);
100
101 /*
102 * Power interface
103 */
104
105 static void pmu_shutdown(void *xsc, int howto);
106 static void pmu_set_sleepled(void *xsc, int onoff);
107 static int pmu_server_mode(SYSCTL_HANDLER_ARGS);
108 static int pmu_acline_state(SYSCTL_HANDLER_ARGS);
109 static int pmu_query_battery(struct pmu_softc *sc, int batt,
110 struct pmu_battstate *info);
111 static int pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS);
112 static int pmu_battmon(SYSCTL_HANDLER_ARGS);
113 static void pmu_battquery_proc(void);
114 static void pmu_battery_notify(struct pmu_battstate *batt,
115 struct pmu_battstate *old);
116
117 /*
118 * List of battery-related sysctls we might ask for
119 */
120
121 enum {
122 PMU_BATSYSCTL_PRESENT = 1 << 8,
123 PMU_BATSYSCTL_CHARGING = 2 << 8,
124 PMU_BATSYSCTL_CHARGE = 3 << 8,
125 PMU_BATSYSCTL_MAXCHARGE = 4 << 8,
126 PMU_BATSYSCTL_CURRENT = 5 << 8,
127 PMU_BATSYSCTL_VOLTAGE = 6 << 8,
128 PMU_BATSYSCTL_TIME = 7 << 8,
129 PMU_BATSYSCTL_LIFE = 8 << 8
130 };
131
132 static device_method_t pmu_methods[] = {
133 /* Device interface */
134 DEVMETHOD(device_probe, pmu_probe),
135 DEVMETHOD(device_attach, pmu_attach),
136 DEVMETHOD(device_detach, pmu_detach),
137 DEVMETHOD(device_shutdown, bus_generic_shutdown),
138
139 /* ADB bus interface */
140 DEVMETHOD(adb_hb_send_raw_packet, pmu_adb_send),
141 DEVMETHOD(adb_hb_controller_poll, pmu_poll),
142 DEVMETHOD(adb_hb_set_autopoll_mask, pmu_adb_autopoll),
143
144 /* Clock interface */
145 DEVMETHOD(clock_gettime, pmu_gettime),
146 DEVMETHOD(clock_settime, pmu_settime),
147
148 DEVMETHOD_END
149 };
150
151 static driver_t pmu_driver = {
152 "pmu",
153 pmu_methods,
154 sizeof(struct pmu_softc),
155 };
156
157 static devclass_t pmu_devclass;
158
159 EARLY_DRIVER_MODULE(pmu, macio, pmu_driver, pmu_devclass, 0, 0,
160 BUS_PASS_RESOURCE);
161 DRIVER_MODULE(adb, pmu, adb_driver, adb_devclass, 0, 0);
162
163 static int pmuextint_probe(device_t);
164 static int pmuextint_attach(device_t);
165
166 static device_method_t pmuextint_methods[] = {
167 /* Device interface */
168 DEVMETHOD(device_probe, pmuextint_probe),
169 DEVMETHOD(device_attach, pmuextint_attach),
170 {0,0}
171 };
172
173 static driver_t pmuextint_driver = {
174 "pmuextint",
175 pmuextint_methods,
176 0
177 };
178
179 static devclass_t pmuextint_devclass;
180
181 EARLY_DRIVER_MODULE(pmuextint, macgpio, pmuextint_driver, pmuextint_devclass,
182 0, 0, BUS_PASS_RESOURCE);
183
184 /* Make sure uhid is loaded, as it turns off some of the ADB emulation */
185 MODULE_DEPEND(pmu, usb, 1, 1, 1);
186
187 static void pmu_intr(void *arg);
188 static void pmu_in(struct pmu_softc *sc);
189 static void pmu_out(struct pmu_softc *sc);
190 static void pmu_ack_on(struct pmu_softc *sc);
191 static void pmu_ack_off(struct pmu_softc *sc);
192 static int pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg,
193 int rlen, uint8_t *out_msg);
194 static uint8_t pmu_read_reg(struct pmu_softc *sc, u_int offset);
195 static void pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value);
196 static int pmu_intr_state(struct pmu_softc *);
197
198 /* these values shows that number of data returned after 'send' cmd is sent */
199 static signed char pm_send_cmd_type[] = {
200 -1, -1, -1, -1, -1, -1, -1, -1,
201 -1, -1, -1, -1, -1, -1, -1, -1,
202 0x01, 0x01, -1, -1, -1, -1, -1, -1,
203 0x00, 0x00, -1, -1, -1, -1, -1, 0x00,
204 -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1,
205 0x00, -1, -1, -1, -1, -1, -1, -1,
206 0x04, 0x14, -1, 0x03, -1, -1, -1, -1,
207 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1,
208 0x01, 0x01, -1, -1, -1, -1, -1, -1,
209 0x00, 0x00, -1, -1, 0x01, -1, -1, -1,
210 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01,
211 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1,
212 0x02, -1, -1, -1, -1, -1, -1, -1,
213 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1,
214 0x01, 0x01, 0x01, -1, -1, -1, -1, -1,
215 0x00, 0x00, -1, -1, -1, 0x05, 0x04, 0x04,
216 0x04, -1, 0x00, -1, -1, -1, -1, -1,
217 0x00, -1, -1, -1, -1, -1, -1, -1,
218 0x01, 0x02, -1, -1, -1, -1, -1, -1,
219 0x00, 0x00, -1, -1, -1, -1, -1, -1,
220 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1,
221 0x01, 0x01, 0x03, 0x02, -1, -1, -1, -1,
222 -1, -1, -1, -1, -1, -1, -1, -1,
223 -1, -1, -1, -1, -1, -1, -1, -1,
224 -1, -1, -1, -1, -1, -1, -1, -1,
225 -1, -1, -1, -1, -1, -1, -1, -1,
226 0x00, -1, -1, -1, -1, -1, -1, -1,
227 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1,
228 -1, 0x04, 0x00, -1, -1, -1, -1, -1,
229 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00,
230 -1, -1, -1, -1, -1, -1, -1, -1,
231 -1, -1, -1, -1, -1, -1, -1, -1
232 };
233
234 /* these values shows that number of data returned after 'receive' cmd is sent */
235 static signed char pm_receive_cmd_type[] = {
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 0x02, 0x02, -1, -1, -1, -1, -1, 0x00,
240 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
241 -1, -1, -1, -1, -1, -1, -1, -1,
242 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
243 0x05, 0x15, -1, 0x02, -1, -1, -1, -1,
244 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
245 0x02, 0x02, -1, -1, -1, -1, -1, -1,
246 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
247 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1,
248 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
249 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1,
250 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
251 -1, -1, -1, -1, -1, 0x01, 0x01, 0x01,
252 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
253 0x06, -1, -1, -1, -1, -1, -1, -1,
254 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
255 0x02, 0x02, -1, -1, -1, -1, -1, -1,
256 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
257 0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1,
258 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
259 -1, -1, -1, -1, -1, -1, -1, -1,
260 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
261 -1, -1, -1, -1, -1, -1, -1, -1,
262 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
263 0x02, 0x02, -1, -1, 0x02, -1, -1, -1,
264 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
265 -1, -1, 0x02, -1, -1, -1, -1, 0x00,
266 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
267 -1, -1, -1, -1, -1, -1, -1, -1,
268 };
269
270 static int pmu_battmon_enabled = 1;
271 static struct proc *pmubattproc;
272 static struct kproc_desc pmu_batt_kp = {
273 "pmu_batt",
274 pmu_battquery_proc,
275 &pmubattproc
276 };
277
278 /* We only have one of each device, so globals are safe */
279 static device_t pmu = NULL;
280 static device_t pmu_extint = NULL;
281
282 static int
pmuextint_probe(device_t dev)283 pmuextint_probe(device_t dev)
284 {
285 const char *type = ofw_bus_get_type(dev);
286
287 if (strcmp(type, "extint-gpio1") != 0)
288 return (ENXIO);
289
290 device_set_desc(dev, "Apple PMU99 External Interrupt");
291 return (0);
292 }
293
294 static int
pmu_probe(device_t dev)295 pmu_probe(device_t dev)
296 {
297 const char *type = ofw_bus_get_type(dev);
298
299 if (strcmp(type, "via-pmu") != 0)
300 return (ENXIO);
301
302 device_set_desc(dev, "Apple PMU99 Controller");
303 return (0);
304 }
305
306 static int
setup_pmu_intr(device_t dev,device_t extint)307 setup_pmu_intr(device_t dev, device_t extint)
308 {
309 struct pmu_softc *sc;
310 sc = device_get_softc(dev);
311
312 sc->sc_irqrid = 0;
313 sc->sc_irq = bus_alloc_resource_any(extint, SYS_RES_IRQ, &sc->sc_irqrid,
314 RF_ACTIVE);
315 if (sc->sc_irq == NULL) {
316 device_printf(dev, "could not allocate interrupt\n");
317 return (ENXIO);
318 }
319
320 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC | INTR_MPSAFE
321 | INTR_ENTROPY, NULL, pmu_intr, dev, &sc->sc_ih) != 0) {
322 device_printf(dev, "could not setup interrupt\n");
323 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid,
324 sc->sc_irq);
325 return (ENXIO);
326 }
327
328 return (0);
329 }
330
331 static int
pmuextint_attach(device_t dev)332 pmuextint_attach(device_t dev)
333 {
334 pmu_extint = dev;
335 if (pmu)
336 return (setup_pmu_intr(pmu,dev));
337
338 return (0);
339 }
340
341 static int
pmu_attach(device_t dev)342 pmu_attach(device_t dev)
343 {
344 struct pmu_softc *sc;
345
346 int i;
347 uint8_t reg;
348 uint8_t cmd[2] = {2, 0};
349 uint8_t resp[16];
350 phandle_t node,child;
351 struct sysctl_ctx_list *ctx;
352 struct sysctl_oid *tree;
353
354 sc = device_get_softc(dev);
355 sc->sc_dev = dev;
356
357 sc->sc_memrid = 0;
358 sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
359 &sc->sc_memrid, RF_ACTIVE);
360
361 mtx_init(&sc->sc_mutex,"pmu",NULL,MTX_DEF | MTX_RECURSE);
362
363 if (sc->sc_memr == NULL) {
364 device_printf(dev, "Could not alloc mem resource!\n");
365 return (ENXIO);
366 }
367
368 /*
369 * Our interrupt is attached to a GPIO pin. Depending on probe order,
370 * we may not have found it yet. If we haven't, it will find us, and
371 * attach our interrupt then.
372 */
373 pmu = dev;
374 if (pmu_extint != NULL) {
375 if (setup_pmu_intr(dev,pmu_extint) != 0)
376 return (ENXIO);
377 }
378
379 sc->sc_autopoll = 0;
380 sc->sc_batteries = 0;
381 sc->adb_bus = NULL;
382 sc->sc_leddev = NULL;
383
384 /* Init PMU */
385
386 pmu_write_reg(sc, vBufB, pmu_read_reg(sc, vBufB) | vPB4);
387 pmu_write_reg(sc, vDirB, (pmu_read_reg(sc, vDirB) | vPB4) & ~vPB3);
388
389 reg = PMU_DEFAULTS;
390 pmu_send(sc, PMU_SET_IMASK, 1, ®, 16, resp);
391
392 pmu_write_reg(sc, vIER, 0x94); /* make sure VIA interrupts are on */
393
394 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp);
395 pmu_send(sc, PMU_GET_VERSION, 0, cmd, 16, resp);
396
397 /* Initialize child buses (ADB) */
398 node = ofw_bus_get_node(dev);
399
400 for (child = OF_child(node); child != 0; child = OF_peer(child)) {
401 char name[32];
402
403 memset(name, 0, sizeof(name));
404 OF_getprop(child, "name", name, sizeof(name));
405
406 if (bootverbose)
407 device_printf(dev, "PMU child <%s>\n",name);
408
409 if (strncmp(name, "adb", 4) == 0) {
410 sc->adb_bus = device_add_child(dev,"adb",-1);
411 }
412
413 if (strncmp(name, "power-mgt", 9) == 0) {
414 uint32_t prim_info[9];
415
416 if (OF_getprop(child, "prim-info", prim_info,
417 sizeof(prim_info)) >= 7)
418 sc->sc_batteries = (prim_info[6] >> 16) & 0xff;
419
420 if (bootverbose && sc->sc_batteries > 0)
421 device_printf(dev, "%d batteries detected\n",
422 sc->sc_batteries);
423 }
424 }
425
426 /*
427 * Set up sysctls
428 */
429
430 ctx = device_get_sysctl_ctx(dev);
431 tree = device_get_sysctl_tree(dev);
432
433 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
434 "server_mode", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, sc, 0,
435 pmu_server_mode, "I", "Enable reboot after power failure");
436
437 if (sc->sc_batteries > 0) {
438 struct sysctl_oid *oid, *battroot;
439 char battnum[2];
440
441 /* Only start the battery monitor if we have a battery. */
442 kproc_start(&pmu_batt_kp);
443 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
444 "monitor_batteries",
445 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
446 pmu_battmon, "I", "Post battery events to devd");
447
448 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
449 "acline", CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
450 0, pmu_acline_state, "I", "AC Line Status");
451
452 battroot = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
453 "batteries", CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
454 "Battery Information");
455
456 for (i = 0; i < sc->sc_batteries; i++) {
457 battnum[0] = i + '0';
458 battnum[1] = '\0';
459
460 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(battroot),
461 OID_AUTO, battnum, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
462 "Battery Information");
463
464 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
465 "present",
466 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
467 PMU_BATSYSCTL_PRESENT | i, pmu_battquery_sysctl,
468 "I", "Battery present");
469 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
470 "charging",
471 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
472 PMU_BATSYSCTL_CHARGING | i, pmu_battquery_sysctl,
473 "I", "Battery charging");
474 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
475 "charge",
476 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
477 PMU_BATSYSCTL_CHARGE | i, pmu_battquery_sysctl,
478 "I", "Battery charge (mAh)");
479 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
480 "maxcharge",
481 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
482 PMU_BATSYSCTL_MAXCHARGE | i, pmu_battquery_sysctl,
483 "I", "Maximum battery capacity (mAh)");
484 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
485 "rate",
486 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
487 PMU_BATSYSCTL_CURRENT | i, pmu_battquery_sysctl,
488 "I", "Battery discharge rate (mA)");
489 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
490 "voltage",
491 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
492 PMU_BATSYSCTL_VOLTAGE | i, pmu_battquery_sysctl,
493 "I", "Battery voltage (mV)");
494
495 /* Knobs for mental compatibility with ACPI */
496
497 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
498 "time",
499 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
500 PMU_BATSYSCTL_TIME | i, pmu_battquery_sysctl,
501 "I", "Time Remaining (minutes)");
502 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
503 "life",
504 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc,
505 PMU_BATSYSCTL_LIFE | i, pmu_battquery_sysctl,
506 "I", "Capacity remaining (percent)");
507 }
508 }
509
510 /*
511 * Set up LED interface
512 */
513
514 sc->sc_leddev = led_create(pmu_set_sleepled, sc, "sleepled");
515
516 /*
517 * Register RTC
518 */
519
520 clock_register(dev, 1000);
521
522 /*
523 * Register power control handler
524 */
525 EVENTHANDLER_REGISTER(shutdown_final, pmu_shutdown, sc,
526 SHUTDOWN_PRI_LAST);
527
528 return (bus_generic_attach(dev));
529 }
530
531 static int
pmu_detach(device_t dev)532 pmu_detach(device_t dev)
533 {
534 struct pmu_softc *sc;
535
536 sc = device_get_softc(dev);
537
538 if (sc->sc_leddev != NULL)
539 led_destroy(sc->sc_leddev);
540
541 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
542 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, sc->sc_irq);
543 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid, sc->sc_memr);
544 mtx_destroy(&sc->sc_mutex);
545
546 return (bus_generic_detach(dev));
547 }
548
549 static uint8_t
pmu_read_reg(struct pmu_softc * sc,u_int offset)550 pmu_read_reg(struct pmu_softc *sc, u_int offset)
551 {
552 return (bus_read_1(sc->sc_memr, offset));
553 }
554
555 static void
pmu_write_reg(struct pmu_softc * sc,u_int offset,uint8_t value)556 pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value)
557 {
558 bus_write_1(sc->sc_memr, offset, value);
559 }
560
561 static int
pmu_send_byte(struct pmu_softc * sc,uint8_t data)562 pmu_send_byte(struct pmu_softc *sc, uint8_t data)
563 {
564
565 pmu_out(sc);
566 pmu_write_reg(sc, vSR, data);
567 pmu_ack_off(sc);
568 /* wait for intr to come up */
569 /* XXX should add a timeout and bail if it expires */
570 do {} while (pmu_intr_state(sc) == 0);
571 pmu_ack_on(sc);
572 do {} while (pmu_intr_state(sc));
573 pmu_ack_on(sc);
574 return 0;
575 }
576
577 static inline int
pmu_read_byte(struct pmu_softc * sc,uint8_t * data)578 pmu_read_byte(struct pmu_softc *sc, uint8_t *data)
579 {
580 volatile uint8_t scratch;
581 pmu_in(sc);
582 scratch = pmu_read_reg(sc, vSR);
583 pmu_ack_off(sc);
584 /* wait for intr to come up */
585 do {} while (pmu_intr_state(sc) == 0);
586 pmu_ack_on(sc);
587 do {} while (pmu_intr_state(sc));
588 *data = pmu_read_reg(sc, vSR);
589 return 0;
590 }
591
592 static int
pmu_intr_state(struct pmu_softc * sc)593 pmu_intr_state(struct pmu_softc *sc)
594 {
595 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0);
596 }
597
598 static int
pmu_send(void * cookie,int cmd,int length,uint8_t * in_msg,int rlen,uint8_t * out_msg)599 pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen,
600 uint8_t *out_msg)
601 {
602 struct pmu_softc *sc = cookie;
603 int i, rcv_len = -1;
604 uint8_t out_len, intreg;
605
606 intreg = pmu_read_reg(sc, vIER);
607 intreg &= 0x10;
608 pmu_write_reg(sc, vIER, intreg);
609
610 /* wait idle */
611 do {} while (pmu_intr_state(sc));
612
613 /* send command */
614 pmu_send_byte(sc, cmd);
615
616 /* send length if necessary */
617 if (pm_send_cmd_type[cmd] < 0) {
618 pmu_send_byte(sc, length);
619 }
620
621 for (i = 0; i < length; i++) {
622 pmu_send_byte(sc, in_msg[i]);
623 }
624
625 /* see if there's data to read */
626 rcv_len = pm_receive_cmd_type[cmd];
627 if (rcv_len == 0)
628 goto done;
629
630 /* read command */
631 if (rcv_len == 1) {
632 pmu_read_byte(sc, out_msg);
633 goto done;
634 } else
635 out_msg[0] = cmd;
636 if (rcv_len < 0) {
637 pmu_read_byte(sc, &out_len);
638 rcv_len = out_len + 1;
639 }
640 for (i = 1; i < min(rcv_len, rlen); i++)
641 pmu_read_byte(sc, &out_msg[i]);
642
643 done:
644 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90);
645
646 return rcv_len;
647 }
648
649 static u_int
pmu_poll(device_t dev)650 pmu_poll(device_t dev)
651 {
652 pmu_intr(dev);
653 return (0);
654 }
655
656 static void
pmu_in(struct pmu_softc * sc)657 pmu_in(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
pmu_out(struct pmu_softc * sc)668 pmu_out(struct pmu_softc *sc)
669 {
670 uint8_t reg;
671
672 reg = pmu_read_reg(sc, vACR);
673 reg |= vSR_OUT;
674 reg |= 0x0c;
675 pmu_write_reg(sc, vACR, reg);
676 }
677
678 static void
pmu_ack_off(struct pmu_softc * sc)679 pmu_ack_off(struct pmu_softc *sc)
680 {
681 uint8_t reg;
682
683 reg = pmu_read_reg(sc, vBufB);
684 reg &= ~vPB4;
685 pmu_write_reg(sc, vBufB, reg);
686 }
687
688 static void
pmu_ack_on(struct pmu_softc * sc)689 pmu_ack_on(struct pmu_softc *sc)
690 {
691 uint8_t reg;
692
693 reg = pmu_read_reg(sc, vBufB);
694 reg |= vPB4;
695 pmu_write_reg(sc, vBufB, reg);
696 }
697
698 static void
pmu_intr(void * arg)699 pmu_intr(void *arg)
700 {
701 device_t dev;
702 struct pmu_softc *sc;
703
704 unsigned int len;
705 uint8_t resp[16];
706 uint8_t junk[16];
707
708 dev = (device_t)arg;
709 sc = device_get_softc(dev);
710
711 mtx_lock(&sc->sc_mutex);
712
713 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */
714 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp);
715
716 mtx_unlock(&sc->sc_mutex);
717
718 if ((len < 1) || (resp[1] == 0)) {
719 return;
720 }
721
722 if (resp[1] & PMU_INT_ADB) {
723 /*
724 * the PMU will turn off autopolling after each command that
725 * it did not issue, so we assume any but TALK R0 is ours and
726 * re-enable autopoll here whenever we receive an ACK for a
727 * non TR0 command.
728 */
729 mtx_lock(&sc->sc_mutex);
730
731 if ((resp[2] & 0x0f) != (ADB_COMMAND_TALK << 2)) {
732 if (sc->sc_autopoll) {
733 uint8_t cmd[] = {0, PMU_SET_POLL_MASK,
734 (sc->sc_autopoll >> 8) & 0xff,
735 sc->sc_autopoll & 0xff};
736
737 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, junk);
738 }
739 }
740
741 mtx_unlock(&sc->sc_mutex);
742
743 adb_receive_raw_packet(sc->adb_bus,resp[1],resp[2],
744 len - 3,&resp[3]);
745 }
746 if (resp[1] & PMU_INT_ENVIRONMENT) {
747 /* if the lid was just closed, notify devd. */
748 if ((resp[2] & PMU_ENV_LID_CLOSED) && (!sc->lid_closed)) {
749 sc->lid_closed = 1;
750 devctl_notify("PMU", "lid", "close", NULL);
751 }
752 else if (!(resp[2] & PMU_ENV_LID_CLOSED) && (sc->lid_closed)) {
753 /* if the lid was just opened, notify devd. */
754 sc->lid_closed = 0;
755 devctl_notify("PMU", "lid", "open", NULL);
756 }
757 if (resp[2] & PMU_ENV_POWER)
758 devctl_notify("PMU", "Button", "pressed", NULL);
759 }
760 }
761
762 static u_int
pmu_adb_send(device_t dev,u_char command_byte,int len,u_char * data,u_char poll)763 pmu_adb_send(device_t dev, u_char command_byte, int len, u_char *data,
764 u_char poll)
765 {
766 struct pmu_softc *sc = device_get_softc(dev);
767 int i,replen;
768 uint8_t packet[16], resp[16];
769
770 /* construct an ADB command packet and send it */
771
772 packet[0] = command_byte;
773
774 packet[1] = 0;
775 packet[2] = len;
776 for (i = 0; i < len; i++)
777 packet[i + 3] = data[i];
778
779 mtx_lock(&sc->sc_mutex);
780 replen = pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp);
781 mtx_unlock(&sc->sc_mutex);
782
783 if (poll)
784 pmu_poll(dev);
785
786 return 0;
787 }
788
789 static u_int
pmu_adb_autopoll(device_t dev,uint16_t mask)790 pmu_adb_autopoll(device_t dev, uint16_t mask)
791 {
792 struct pmu_softc *sc = device_get_softc(dev);
793
794 /* magical incantation to re-enable autopolling */
795 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (mask >> 8) & 0xff, mask & 0xff};
796 uint8_t resp[16];
797
798 mtx_lock(&sc->sc_mutex);
799
800 if (sc->sc_autopoll == mask) {
801 mtx_unlock(&sc->sc_mutex);
802 return 0;
803 }
804
805 sc->sc_autopoll = mask & 0xffff;
806
807 if (mask)
808 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp);
809 else
810 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp);
811
812 mtx_unlock(&sc->sc_mutex);
813
814 return 0;
815 }
816
817 static void
pmu_shutdown(void * xsc,int howto)818 pmu_shutdown(void *xsc, int howto)
819 {
820 struct pmu_softc *sc = xsc;
821 uint8_t cmd[] = {'M', 'A', 'T', 'T'};
822
823 if (howto & RB_HALT)
824 pmu_send(sc, PMU_POWER_OFF, 4, cmd, 0, NULL);
825 else
826 pmu_send(sc, PMU_RESET_CPU, 0, NULL, 0, NULL);
827
828 for (;;);
829 }
830
831 static void
pmu_set_sleepled(void * xsc,int onoff)832 pmu_set_sleepled(void *xsc, int onoff)
833 {
834 struct pmu_softc *sc = xsc;
835 uint8_t cmd[] = {4, 0, 0};
836
837 cmd[2] = onoff;
838
839 mtx_lock(&sc->sc_mutex);
840 pmu_send(sc, PMU_SET_SLEEPLED, 3, cmd, 0, NULL);
841 mtx_unlock(&sc->sc_mutex);
842 }
843
844 static int
pmu_server_mode(SYSCTL_HANDLER_ARGS)845 pmu_server_mode(SYSCTL_HANDLER_ARGS)
846 {
847 struct pmu_softc *sc = arg1;
848
849 u_int server_mode = 0;
850 uint8_t getcmd[] = {PMU_PWR_GET_POWERUP_EVENTS};
851 uint8_t setcmd[] = {0, 0, PMU_PWR_WAKEUP_AC_INSERT};
852 uint8_t resp[3];
853 int error, len;
854
855 mtx_lock(&sc->sc_mutex);
856 len = pmu_send(sc, PMU_POWER_EVENTS, 1, getcmd, 3, resp);
857 mtx_unlock(&sc->sc_mutex);
858
859 if (len == 3)
860 server_mode = (resp[2] & PMU_PWR_WAKEUP_AC_INSERT) ? 1 : 0;
861
862 error = sysctl_handle_int(oidp, &server_mode, 0, req);
863
864 if (len != 3)
865 return (EINVAL);
866
867 if (error || !req->newptr)
868 return (error);
869
870 if (server_mode == 1)
871 setcmd[0] = PMU_PWR_SET_POWERUP_EVENTS;
872 else if (server_mode == 0)
873 setcmd[0] = PMU_PWR_CLR_POWERUP_EVENTS;
874 else
875 return (EINVAL);
876
877 setcmd[1] = resp[1];
878
879 mtx_lock(&sc->sc_mutex);
880 pmu_send(sc, PMU_POWER_EVENTS, 3, setcmd, 2, resp);
881 mtx_unlock(&sc->sc_mutex);
882
883 return (0);
884 }
885
886 static int
pmu_query_battery(struct pmu_softc * sc,int batt,struct pmu_battstate * info)887 pmu_query_battery(struct pmu_softc *sc, int batt, struct pmu_battstate *info)
888 {
889 uint8_t reg;
890 uint8_t resp[16];
891 int len;
892
893 reg = batt + 1;
894
895 mtx_lock(&sc->sc_mutex);
896 len = pmu_send(sc, PMU_SMART_BATTERY_STATE, 1, ®, 16, resp);
897 mtx_unlock(&sc->sc_mutex);
898
899 if (len < 3)
900 return (-1);
901
902 /* All PMU battery info replies share a common header:
903 * Byte 1 Payload Format
904 * Byte 2 Battery Flags
905 */
906
907 info->state = resp[2];
908
909 switch (resp[1]) {
910 case 3:
911 case 4:
912 /*
913 * Formats 3 and 4 appear to be the same:
914 * Byte 3 Charge
915 * Byte 4 Max Charge
916 * Byte 5 Current
917 * Byte 6 Voltage
918 */
919
920 info->charge = resp[3];
921 info->maxcharge = resp[4];
922 /* Current can be positive or negative */
923 info->current = (int8_t)resp[5];
924 info->voltage = resp[6];
925 break;
926 case 5:
927 /*
928 * Formats 5 is a wider version of formats 3 and 4
929 * Byte 3-4 Charge
930 * Byte 5-6 Max Charge
931 * Byte 7-8 Current
932 * Byte 9-10 Voltage
933 */
934
935 info->charge = (resp[3] << 8) | resp[4];
936 info->maxcharge = (resp[5] << 8) | resp[6];
937 /* Current can be positive or negative */
938 info->current = (int16_t)((resp[7] << 8) | resp[8]);
939 info->voltage = (resp[9] << 8) | resp[10];
940 break;
941 default:
942 device_printf(sc->sc_dev, "Unknown battery info format (%d)!\n",
943 resp[1]);
944 return (-1);
945 }
946
947 return (0);
948 }
949
950 static void
pmu_battery_notify(struct pmu_battstate * batt,struct pmu_battstate * old)951 pmu_battery_notify(struct pmu_battstate *batt, struct pmu_battstate *old)
952 {
953 char notify_buf[16];
954 int new_acline, old_acline;
955
956 new_acline = (batt->state & PMU_PWR_AC_PRESENT) ? 1 : 0;
957 old_acline = (old->state & PMU_PWR_AC_PRESENT) ? 1 : 0;
958
959 if (new_acline != old_acline) {
960 snprintf(notify_buf, sizeof(notify_buf),
961 "notify=0x%02x", new_acline);
962 devctl_notify("PMU", "POWER", "ACLINE", notify_buf);
963 }
964 }
965
966 static void
pmu_battquery_proc()967 pmu_battquery_proc()
968 {
969 struct pmu_softc *sc;
970 struct pmu_battstate batt;
971 struct pmu_battstate cur_batt;
972 int error;
973
974 sc = device_get_softc(pmu);
975
976 bzero(&cur_batt, sizeof(cur_batt));
977 while (1) {
978 kproc_suspend_check(curproc);
979 error = pmu_query_battery(sc, 0, &batt);
980 pmu_battery_notify(&batt, &cur_batt);
981 cur_batt = batt;
982 pause("pmu_batt", hz);
983 }
984 }
985
986 static int
pmu_battmon(SYSCTL_HANDLER_ARGS)987 pmu_battmon(SYSCTL_HANDLER_ARGS)
988 {
989 struct pmu_softc *sc;
990 int error, result;
991
992 sc = arg1;
993 result = pmu_battmon_enabled;
994
995 error = sysctl_handle_int(oidp, &result, 0, req);
996
997 if (error || !req->newptr)
998 return (error);
999
1000 if (!result && pmu_battmon_enabled)
1001 error = kproc_suspend(pmubattproc, hz);
1002 else if (result && pmu_battmon_enabled == 0)
1003 error = kproc_resume(pmubattproc);
1004 pmu_battmon_enabled = (result != 0);
1005
1006 return (error);
1007 }
1008
1009 static int
pmu_acline_state(SYSCTL_HANDLER_ARGS)1010 pmu_acline_state(SYSCTL_HANDLER_ARGS)
1011 {
1012 struct pmu_softc *sc;
1013 struct pmu_battstate batt;
1014 int error, result;
1015
1016 sc = arg1;
1017
1018 /* The PMU treats the AC line status as a property of the battery */
1019 error = pmu_query_battery(sc, 0, &batt);
1020
1021 if (error != 0)
1022 return (error);
1023
1024 result = (batt.state & PMU_PWR_AC_PRESENT) ? 1 : 0;
1025 error = sysctl_handle_int(oidp, &result, 0, req);
1026
1027 return (error);
1028 }
1029
1030 static int
pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS)1031 pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS)
1032 {
1033 struct pmu_softc *sc;
1034 struct pmu_battstate batt;
1035 int error, result;
1036
1037 sc = arg1;
1038
1039 error = pmu_query_battery(sc, arg2 & 0x00ff, &batt);
1040
1041 if (error != 0)
1042 return (error);
1043
1044 switch (arg2 & 0xff00) {
1045 case PMU_BATSYSCTL_PRESENT:
1046 result = (batt.state & PMU_PWR_BATT_PRESENT) ? 1 : 0;
1047 break;
1048 case PMU_BATSYSCTL_CHARGING:
1049 result = (batt.state & PMU_PWR_BATT_CHARGING) ? 1 : 0;
1050 break;
1051 case PMU_BATSYSCTL_CHARGE:
1052 result = batt.charge;
1053 break;
1054 case PMU_BATSYSCTL_MAXCHARGE:
1055 result = batt.maxcharge;
1056 break;
1057 case PMU_BATSYSCTL_CURRENT:
1058 result = batt.current;
1059 break;
1060 case PMU_BATSYSCTL_VOLTAGE:
1061 result = batt.voltage;
1062 break;
1063 case PMU_BATSYSCTL_TIME:
1064 /* Time remaining until full charge/discharge, in minutes */
1065
1066 if (batt.current >= 0)
1067 result = (batt.maxcharge - batt.charge) /* mAh */ * 60
1068 / batt.current /* mA */;
1069 else
1070 result = (batt.charge /* mAh */ * 60)
1071 / (-batt.current /* mA */);
1072 break;
1073 case PMU_BATSYSCTL_LIFE:
1074 /* Battery charge fraction, in percent */
1075 result = (batt.charge * 100) / batt.maxcharge;
1076 break;
1077 default:
1078 /* This should never happen */
1079 result = -1;
1080 }
1081
1082 error = sysctl_handle_int(oidp, &result, 0, req);
1083
1084 return (error);
1085 }
1086
1087 #define DIFF19041970 2082844800
1088
1089 static int
pmu_gettime(device_t dev,struct timespec * ts)1090 pmu_gettime(device_t dev, struct timespec *ts)
1091 {
1092 struct pmu_softc *sc = device_get_softc(dev);
1093 uint8_t resp[16];
1094 uint32_t sec;
1095
1096 mtx_lock(&sc->sc_mutex);
1097 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp);
1098 mtx_unlock(&sc->sc_mutex);
1099
1100 memcpy(&sec, &resp[1], 4);
1101 ts->tv_sec = sec - DIFF19041970;
1102 ts->tv_nsec = 0;
1103
1104 return (0);
1105 }
1106
1107 static int
pmu_settime(device_t dev,struct timespec * ts)1108 pmu_settime(device_t dev, struct timespec *ts)
1109 {
1110 struct pmu_softc *sc = device_get_softc(dev);
1111 uint32_t sec;
1112
1113 sec = ts->tv_sec + DIFF19041970;
1114
1115 mtx_lock(&sc->sc_mutex);
1116 pmu_send(sc, PMU_SET_RTC, sizeof(sec), (uint8_t *)&sec, 0, NULL);
1117 mtx_unlock(&sc->sc_mutex);
1118
1119 return (0);
1120 }
1121
1122 int
pmu_set_speed(int low_speed)1123 pmu_set_speed(int low_speed)
1124 {
1125 struct pmu_softc *sc;
1126 uint8_t sleepcmd[] = {'W', 'O', 'O', 'F', 0};
1127 uint8_t resp[16];
1128
1129 sc = device_get_softc(pmu);
1130 pmu_write_reg(sc, vIER, 0x10);
1131 spinlock_enter();
1132 mtdec(0x7fffffff);
1133 mb();
1134 mtdec(0x7fffffff);
1135
1136 sleepcmd[4] = low_speed;
1137 pmu_send(sc, PMU_CPU_SPEED, 5, sleepcmd, 16, resp);
1138 unin_chip_sleep(NULL, 1);
1139 platform_sleep();
1140 unin_chip_wake(NULL);
1141
1142 mtdec(1); /* Force a decrementer exception */
1143 spinlock_exit();
1144 pmu_write_reg(sc, vIER, 0x90);
1145
1146 return (0);
1147 }
1148