1 /*-
2 * Copyright (c) 2006 Michael Lorenz
3 * Copyright 2008 by Nathan Whitehorn
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/module.h>
35 #include <sys/bus.h>
36 #include <sys/conf.h>
37 #include <sys/kernel.h>
38 #include <sys/kthread.h>
39 #include <sys/clock.h>
40 #include <sys/proc.h>
41 #include <sys/reboot.h>
42 #include <sys/sysctl.h>
43
44 #include <dev/ofw/ofw_bus.h>
45 #include <dev/ofw/openfirm.h>
46 #include <dev/led/led.h>
47
48 #include <machine/_inttypes.h>
49 #include <machine/bus.h>
50 #include <machine/cpu.h>
51 #include <machine/hid.h>
52 #include <machine/intr_machdep.h>
53 #include <machine/md_var.h>
54 #include <machine/pcb.h>
55 #include <machine/pio.h>
56 #include <machine/resource.h>
57
58 #include <vm/vm.h>
59 #include <vm/pmap.h>
60
61 #include <sys/rman.h>
62
63 #include <dev/adb/adb.h>
64
65 #include "clock_if.h"
66 #include "pmuvar.h"
67 #include "viareg.h"
68 #include "uninorthvar.h" /* For unin_chip_sleep()/unin_chip_wake() */
69
70 #define PMU_DEFAULTS PMU_INT_TICK | PMU_INT_ADB | \
71 PMU_INT_PCEJECT | PMU_INT_SNDBRT | \
72 PMU_INT_BATTERY | PMU_INT_ENVIRONMENT
73
74 /*
75 * Bus interface
76 */
77 static int pmu_probe(device_t);
78 static int pmu_attach(device_t);
79 static int pmu_detach(device_t);
80
81 /*
82 * Clock interface
83 */
84 static int pmu_gettime(device_t dev, struct timespec *ts);
85 static int pmu_settime(device_t dev, struct timespec *ts);
86
87 /*
88 * ADB Interface
89 */
90
91 static u_int pmu_adb_send(device_t dev, u_char command_byte, int len,
92 u_char *data, u_char poll);
93 static u_int pmu_adb_autopoll(device_t dev, uint16_t mask);
94 static u_int pmu_poll(device_t dev);
95
96 /*
97 * Power interface
98 */
99
100 static void pmu_shutdown(void *xsc, int howto);
101 static void pmu_set_sleepled(void *xsc, int onoff);
102 static int pmu_server_mode(SYSCTL_HANDLER_ARGS);
103 static int pmu_acline_state(SYSCTL_HANDLER_ARGS);
104 static int pmu_query_battery(struct pmu_softc *sc, int batt,
105 struct pmu_battstate *info);
106 static int pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS);
107 static int pmu_battmon(SYSCTL_HANDLER_ARGS);
108 static void pmu_battquery_proc(void);
109 static void pmu_battery_notify(struct pmu_battstate *batt,
110 struct pmu_battstate *old);
111
112 /*
113 * List of battery-related sysctls we might ask for
114 */
115
116 enum {
117 PMU_BATSYSCTL_PRESENT = 1 << 8,
118 PMU_BATSYSCTL_CHARGING = 2 << 8,
119 PMU_BATSYSCTL_CHARGE = 3 << 8,
120 PMU_BATSYSCTL_MAXCHARGE = 4 << 8,
121 PMU_BATSYSCTL_CURRENT = 5 << 8,
122 PMU_BATSYSCTL_VOLTAGE = 6 << 8,
123 PMU_BATSYSCTL_TIME = 7 << 8,
124 PMU_BATSYSCTL_LIFE = 8 << 8
125 };
126
127 static device_method_t pmu_methods[] = {
128 /* Device interface */
129 DEVMETHOD(device_probe, pmu_probe),
130 DEVMETHOD(device_attach, pmu_attach),
131 DEVMETHOD(device_detach, pmu_detach),
132 DEVMETHOD(device_shutdown, bus_generic_shutdown),
133
134 /* ADB bus interface */
135 DEVMETHOD(adb_hb_send_raw_packet, pmu_adb_send),
136 DEVMETHOD(adb_hb_controller_poll, pmu_poll),
137 DEVMETHOD(adb_hb_set_autopoll_mask, pmu_adb_autopoll),
138
139 /* Clock interface */
140 DEVMETHOD(clock_gettime, pmu_gettime),
141 DEVMETHOD(clock_settime, pmu_settime),
142
143 DEVMETHOD_END
144 };
145
146 static driver_t pmu_driver = {
147 "pmu",
148 pmu_methods,
149 sizeof(struct pmu_softc),
150 };
151
152 static devclass_t pmu_devclass;
153
154 DRIVER_MODULE(pmu, macio, pmu_driver, pmu_devclass, 0, 0);
155 DRIVER_MODULE(adb, pmu, adb_driver, adb_devclass, 0, 0);
156
157 static int pmuextint_probe(device_t);
158 static int pmuextint_attach(device_t);
159
160 static device_method_t pmuextint_methods[] = {
161 /* Device interface */
162 DEVMETHOD(device_probe, pmuextint_probe),
163 DEVMETHOD(device_attach, pmuextint_attach),
164
165 {0,0}
166 };
167
168 static driver_t pmuextint_driver = {
169 "pmuextint",
170 pmuextint_methods,
171 0
172 };
173
174 static devclass_t pmuextint_devclass;
175
176 DRIVER_MODULE(pmuextint, macgpio, pmuextint_driver, pmuextint_devclass, 0, 0);
177
178 /* Make sure uhid is loaded, as it turns off some of the ADB emulation */
179 MODULE_DEPEND(pmu, usb, 1, 1, 1);
180
181 static void pmu_intr(void *arg);
182 static void pmu_in(struct pmu_softc *sc);
183 static void pmu_out(struct pmu_softc *sc);
184 static void pmu_ack_on(struct pmu_softc *sc);
185 static void pmu_ack_off(struct pmu_softc *sc);
186 static int pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg,
187 int rlen, uint8_t *out_msg);
188 static uint8_t pmu_read_reg(struct pmu_softc *sc, u_int offset);
189 static void pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value);
190 static int pmu_intr_state(struct pmu_softc *);
191
192 /* these values shows that number of data returned after 'send' cmd is sent */
193 static signed char pm_send_cmd_type[] = {
194 -1, -1, -1, -1, -1, -1, -1, -1,
195 -1, -1, -1, -1, -1, -1, -1, -1,
196 0x01, 0x01, -1, -1, -1, -1, -1, -1,
197 0x00, 0x00, -1, -1, -1, -1, -1, 0x00,
198 -1, 0x00, 0x02, 0x01, 0x01, -1, -1, -1,
199 0x00, -1, -1, -1, -1, -1, -1, -1,
200 0x04, 0x14, -1, 0x03, -1, -1, -1, -1,
201 0x00, 0x00, 0x02, 0x02, -1, -1, -1, -1,
202 0x01, 0x01, -1, -1, -1, -1, -1, -1,
203 0x00, 0x00, -1, -1, 0x01, -1, -1, -1,
204 0x01, 0x00, 0x02, 0x02, -1, 0x01, 0x03, 0x01,
205 0x00, 0x01, 0x00, 0x00, 0x00, -1, -1, -1,
206 0x02, -1, -1, -1, -1, -1, -1, -1,
207 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -1, -1,
208 0x01, 0x01, 0x01, -1, -1, -1, -1, -1,
209 0x00, 0x00, -1, -1, -1, 0x05, 0x04, 0x04,
210 0x04, -1, 0x00, -1, -1, -1, -1, -1,
211 0x00, -1, -1, -1, -1, -1, -1, -1,
212 0x01, 0x02, -1, -1, -1, -1, -1, -1,
213 0x00, 0x00, -1, -1, -1, -1, -1, -1,
214 0x02, 0x02, 0x02, 0x04, -1, 0x00, -1, -1,
215 0x01, 0x01, 0x03, 0x02, -1, -1, -1, -1,
216 -1, -1, -1, -1, -1, -1, -1, -1,
217 -1, -1, -1, -1, -1, -1, -1, -1,
218 -1, -1, -1, -1, -1, -1, -1, -1,
219 -1, -1, -1, -1, -1, -1, -1, -1,
220 0x00, -1, -1, -1, -1, -1, -1, -1,
221 0x01, 0x01, -1, -1, 0x00, 0x00, -1, -1,
222 -1, 0x04, 0x00, -1, -1, -1, -1, -1,
223 0x03, -1, 0x00, -1, 0x00, -1, -1, 0x00,
224 -1, -1, -1, -1, -1, -1, -1, -1,
225 -1, -1, -1, -1, -1, -1, -1, -1
226 };
227
228 /* these values shows that number of data returned after 'receive' cmd is sent */
229 static signed char pm_receive_cmd_type[] = {
230 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
231 -1, -1, -1, -1, -1, -1, -1, -1,
232 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
233 0x02, 0x02, -1, -1, -1, -1, -1, 0x00,
234 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
235 -1, -1, -1, -1, -1, -1, -1, -1,
236 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
237 0x05, 0x15, -1, 0x02, -1, -1, -1, -1,
238 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
239 0x02, 0x02, -1, -1, -1, -1, -1, -1,
240 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
241 0x02, 0x00, 0x03, 0x03, -1, -1, -1, -1,
242 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
243 0x04, 0x04, 0x03, 0x09, -1, -1, -1, -1,
244 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
245 -1, -1, -1, -1, -1, 0x01, 0x01, 0x01,
246 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
247 0x06, -1, -1, -1, -1, -1, -1, -1,
248 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
249 0x02, 0x02, -1, -1, -1, -1, -1, -1,
250 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
251 0x02, 0x00, 0x00, 0x00, -1, -1, -1, -1,
252 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
253 -1, -1, -1, -1, -1, -1, -1, -1,
254 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
255 -1, -1, -1, -1, -1, -1, -1, -1,
256 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
257 0x02, 0x02, -1, -1, 0x02, -1, -1, -1,
258 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
259 -1, -1, 0x02, -1, -1, -1, -1, 0x00,
260 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
261 -1, -1, -1, -1, -1, -1, -1, -1,
262 };
263
264 static int pmu_battmon_enabled = 1;
265 static struct proc *pmubattproc;
266 static struct kproc_desc pmu_batt_kp = {
267 "pmu_batt",
268 pmu_battquery_proc,
269 &pmubattproc
270 };
271
272 /* We only have one of each device, so globals are safe */
273 static device_t pmu = NULL;
274 static device_t pmu_extint = NULL;
275
276 static int
pmuextint_probe(device_t dev)277 pmuextint_probe(device_t dev)
278 {
279 const char *type = ofw_bus_get_type(dev);
280
281 if (strcmp(type, "extint-gpio1") != 0)
282 return (ENXIO);
283
284 device_set_desc(dev, "Apple PMU99 External Interrupt");
285 return (0);
286 }
287
288 static int
pmu_probe(device_t dev)289 pmu_probe(device_t dev)
290 {
291 const char *type = ofw_bus_get_type(dev);
292
293 if (strcmp(type, "via-pmu") != 0)
294 return (ENXIO);
295
296 device_set_desc(dev, "Apple PMU99 Controller");
297 return (0);
298 }
299
300
301 static int
setup_pmu_intr(device_t dev,device_t extint)302 setup_pmu_intr(device_t dev, device_t extint)
303 {
304 struct pmu_softc *sc;
305 sc = device_get_softc(dev);
306
307 sc->sc_irqrid = 0;
308 sc->sc_irq = bus_alloc_resource_any(extint, SYS_RES_IRQ, &sc->sc_irqrid,
309 RF_ACTIVE);
310 if (sc->sc_irq == NULL) {
311 device_printf(dev, "could not allocate interrupt\n");
312 return (ENXIO);
313 }
314
315 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC | INTR_MPSAFE
316 | INTR_ENTROPY, NULL, pmu_intr, dev, &sc->sc_ih) != 0) {
317 device_printf(dev, "could not setup interrupt\n");
318 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid,
319 sc->sc_irq);
320 return (ENXIO);
321 }
322
323 return (0);
324 }
325
326 static int
pmuextint_attach(device_t dev)327 pmuextint_attach(device_t dev)
328 {
329 pmu_extint = dev;
330 if (pmu)
331 return (setup_pmu_intr(pmu,dev));
332
333 return (0);
334 }
335
336 static int
pmu_attach(device_t dev)337 pmu_attach(device_t dev)
338 {
339 struct pmu_softc *sc;
340
341 int i;
342 uint8_t reg;
343 uint8_t cmd[2] = {2, 0};
344 uint8_t resp[16];
345 phandle_t node,child;
346 struct sysctl_ctx_list *ctx;
347 struct sysctl_oid *tree;
348
349 sc = device_get_softc(dev);
350 sc->sc_dev = dev;
351
352 sc->sc_memrid = 0;
353 sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
354 &sc->sc_memrid, RF_ACTIVE);
355
356 mtx_init(&sc->sc_mutex,"pmu",NULL,MTX_DEF | MTX_RECURSE);
357
358 if (sc->sc_memr == NULL) {
359 device_printf(dev, "Could not alloc mem resource!\n");
360 return (ENXIO);
361 }
362
363 /*
364 * Our interrupt is attached to a GPIO pin. Depending on probe order,
365 * we may not have found it yet. If we haven't, it will find us, and
366 * attach our interrupt then.
367 */
368 pmu = dev;
369 if (pmu_extint != NULL) {
370 if (setup_pmu_intr(dev,pmu_extint) != 0)
371 return (ENXIO);
372 }
373
374 sc->sc_autopoll = 0;
375 sc->sc_batteries = 0;
376 sc->adb_bus = NULL;
377 sc->sc_leddev = NULL;
378
379 /* Init PMU */
380
381 pmu_write_reg(sc, vBufB, pmu_read_reg(sc, vBufB) | vPB4);
382 pmu_write_reg(sc, vDirB, (pmu_read_reg(sc, vDirB) | vPB4) & ~vPB3);
383
384 reg = PMU_DEFAULTS;
385 pmu_send(sc, PMU_SET_IMASK, 1, ®, 16, resp);
386
387 pmu_write_reg(sc, vIER, 0x94); /* make sure VIA interrupts are on */
388
389 pmu_send(sc, PMU_SYSTEM_READY, 1, cmd, 16, resp);
390 pmu_send(sc, PMU_GET_VERSION, 0, cmd, 16, resp);
391
392 /* Initialize child buses (ADB) */
393 node = ofw_bus_get_node(dev);
394
395 for (child = OF_child(node); child != 0; child = OF_peer(child)) {
396 char name[32];
397
398 memset(name, 0, sizeof(name));
399 OF_getprop(child, "name", name, sizeof(name));
400
401 if (bootverbose)
402 device_printf(dev, "PMU child <%s>\n",name);
403
404 if (strncmp(name, "adb", 4) == 0) {
405 sc->adb_bus = device_add_child(dev,"adb",-1);
406 }
407
408 if (strncmp(name, "power-mgt", 9) == 0) {
409 uint32_t prim_info[9];
410
411 if (OF_getprop(child, "prim-info", prim_info,
412 sizeof(prim_info)) >= 7)
413 sc->sc_batteries = (prim_info[6] >> 16) & 0xff;
414
415 if (bootverbose && sc->sc_batteries > 0)
416 device_printf(dev, "%d batteries detected\n",
417 sc->sc_batteries);
418 }
419 }
420
421 /*
422 * Set up sysctls
423 */
424
425 ctx = device_get_sysctl_ctx(dev);
426 tree = device_get_sysctl_tree(dev);
427
428 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
429 "server_mode", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
430 pmu_server_mode, "I", "Enable reboot after power failure");
431
432 if (sc->sc_batteries > 0) {
433 struct sysctl_oid *oid, *battroot;
434 char battnum[2];
435
436 /* Only start the battery monitor if we have a battery. */
437 kproc_start(&pmu_batt_kp);
438 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
439 "monitor_batteries", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
440 pmu_battmon, "I", "Post battery events to devd");
441
442
443 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
444 "acline", CTLTYPE_INT | CTLFLAG_RD, sc, 0,
445 pmu_acline_state, "I", "AC Line Status");
446
447 battroot = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
448 "batteries", CTLFLAG_RD, 0, "Battery Information");
449
450 for (i = 0; i < sc->sc_batteries; i++) {
451 battnum[0] = i + '0';
452 battnum[1] = '\0';
453
454 oid = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(battroot),
455 OID_AUTO, battnum, CTLFLAG_RD, 0,
456 "Battery Information");
457
458 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
459 "present", CTLTYPE_INT | CTLFLAG_RD, sc,
460 PMU_BATSYSCTL_PRESENT | i, pmu_battquery_sysctl,
461 "I", "Battery present");
462 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
463 "charging", CTLTYPE_INT | CTLFLAG_RD, sc,
464 PMU_BATSYSCTL_CHARGING | i, pmu_battquery_sysctl,
465 "I", "Battery charging");
466 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
467 "charge", CTLTYPE_INT | CTLFLAG_RD, sc,
468 PMU_BATSYSCTL_CHARGE | i, pmu_battquery_sysctl,
469 "I", "Battery charge (mAh)");
470 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
471 "maxcharge", CTLTYPE_INT | CTLFLAG_RD, sc,
472 PMU_BATSYSCTL_MAXCHARGE | i, pmu_battquery_sysctl,
473 "I", "Maximum battery capacity (mAh)");
474 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
475 "rate", CTLTYPE_INT | CTLFLAG_RD, sc,
476 PMU_BATSYSCTL_CURRENT | i, pmu_battquery_sysctl,
477 "I", "Battery discharge rate (mA)");
478 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
479 "voltage", CTLTYPE_INT | CTLFLAG_RD, sc,
480 PMU_BATSYSCTL_VOLTAGE | i, pmu_battquery_sysctl,
481 "I", "Battery voltage (mV)");
482
483 /* Knobs for mental compatibility with ACPI */
484
485 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
486 "time", CTLTYPE_INT | CTLFLAG_RD, sc,
487 PMU_BATSYSCTL_TIME | i, pmu_battquery_sysctl,
488 "I", "Time Remaining (minutes)");
489 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO,
490 "life", CTLTYPE_INT | CTLFLAG_RD, sc,
491 PMU_BATSYSCTL_LIFE | i, pmu_battquery_sysctl,
492 "I", "Capacity remaining (percent)");
493 }
494 }
495
496 /*
497 * Set up LED interface
498 */
499
500 sc->sc_leddev = led_create(pmu_set_sleepled, sc, "sleepled");
501
502 /*
503 * Register RTC
504 */
505
506 clock_register(dev, 1000);
507
508 /*
509 * Register power control handler
510 */
511 EVENTHANDLER_REGISTER(shutdown_final, pmu_shutdown, sc,
512 SHUTDOWN_PRI_LAST);
513
514 return (bus_generic_attach(dev));
515 }
516
517 static int
pmu_detach(device_t dev)518 pmu_detach(device_t dev)
519 {
520 struct pmu_softc *sc;
521
522 sc = device_get_softc(dev);
523
524 if (sc->sc_leddev != NULL)
525 led_destroy(sc->sc_leddev);
526
527 bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
528 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, sc->sc_irq);
529 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid, sc->sc_memr);
530 mtx_destroy(&sc->sc_mutex);
531
532 return (bus_generic_detach(dev));
533 }
534
535 static uint8_t
pmu_read_reg(struct pmu_softc * sc,u_int offset)536 pmu_read_reg(struct pmu_softc *sc, u_int offset)
537 {
538 return (bus_read_1(sc->sc_memr, offset));
539 }
540
541 static void
pmu_write_reg(struct pmu_softc * sc,u_int offset,uint8_t value)542 pmu_write_reg(struct pmu_softc *sc, u_int offset, uint8_t value)
543 {
544 bus_write_1(sc->sc_memr, offset, value);
545 }
546
547 static int
pmu_send_byte(struct pmu_softc * sc,uint8_t data)548 pmu_send_byte(struct pmu_softc *sc, uint8_t data)
549 {
550
551 pmu_out(sc);
552 pmu_write_reg(sc, vSR, data);
553 pmu_ack_off(sc);
554 /* wait for intr to come up */
555 /* XXX should add a timeout and bail if it expires */
556 do {} while (pmu_intr_state(sc) == 0);
557 pmu_ack_on(sc);
558 do {} while (pmu_intr_state(sc));
559 pmu_ack_on(sc);
560 return 0;
561 }
562
563 static inline int
pmu_read_byte(struct pmu_softc * sc,uint8_t * data)564 pmu_read_byte(struct pmu_softc *sc, uint8_t *data)
565 {
566 volatile uint8_t scratch;
567 pmu_in(sc);
568 scratch = pmu_read_reg(sc, vSR);
569 pmu_ack_off(sc);
570 /* wait for intr to come up */
571 do {} while (pmu_intr_state(sc) == 0);
572 pmu_ack_on(sc);
573 do {} while (pmu_intr_state(sc));
574 *data = pmu_read_reg(sc, vSR);
575 return 0;
576 }
577
578 static int
pmu_intr_state(struct pmu_softc * sc)579 pmu_intr_state(struct pmu_softc *sc)
580 {
581 return ((pmu_read_reg(sc, vBufB) & vPB3) == 0);
582 }
583
584 static int
pmu_send(void * cookie,int cmd,int length,uint8_t * in_msg,int rlen,uint8_t * out_msg)585 pmu_send(void *cookie, int cmd, int length, uint8_t *in_msg, int rlen,
586 uint8_t *out_msg)
587 {
588 struct pmu_softc *sc = cookie;
589 int i, rcv_len = -1;
590 uint8_t out_len, intreg;
591
592 intreg = pmu_read_reg(sc, vIER);
593 intreg &= 0x10;
594 pmu_write_reg(sc, vIER, intreg);
595
596 /* wait idle */
597 do {} while (pmu_intr_state(sc));
598
599 /* send command */
600 pmu_send_byte(sc, cmd);
601
602 /* send length if necessary */
603 if (pm_send_cmd_type[cmd] < 0) {
604 pmu_send_byte(sc, length);
605 }
606
607 for (i = 0; i < length; i++) {
608 pmu_send_byte(sc, in_msg[i]);
609 }
610
611 /* see if there's data to read */
612 rcv_len = pm_receive_cmd_type[cmd];
613 if (rcv_len == 0)
614 goto done;
615
616 /* read command */
617 if (rcv_len == 1) {
618 pmu_read_byte(sc, out_msg);
619 goto done;
620 } else
621 out_msg[0] = cmd;
622 if (rcv_len < 0) {
623 pmu_read_byte(sc, &out_len);
624 rcv_len = out_len + 1;
625 }
626 for (i = 1; i < min(rcv_len, rlen); i++)
627 pmu_read_byte(sc, &out_msg[i]);
628
629 done:
630 pmu_write_reg(sc, vIER, (intreg == 0) ? 0 : 0x90);
631
632 return rcv_len;
633 }
634
635
636 static u_int
pmu_poll(device_t dev)637 pmu_poll(device_t dev)
638 {
639 pmu_intr(dev);
640 return (0);
641 }
642
643 static void
pmu_in(struct pmu_softc * sc)644 pmu_in(struct pmu_softc *sc)
645 {
646 uint8_t reg;
647
648 reg = pmu_read_reg(sc, vACR);
649 reg &= ~vSR_OUT;
650 reg |= 0x0c;
651 pmu_write_reg(sc, vACR, reg);
652 }
653
654 static void
pmu_out(struct pmu_softc * sc)655 pmu_out(struct pmu_softc *sc)
656 {
657 uint8_t reg;
658
659 reg = pmu_read_reg(sc, vACR);
660 reg |= vSR_OUT;
661 reg |= 0x0c;
662 pmu_write_reg(sc, vACR, reg);
663 }
664
665 static void
pmu_ack_off(struct pmu_softc * sc)666 pmu_ack_off(struct pmu_softc *sc)
667 {
668 uint8_t reg;
669
670 reg = pmu_read_reg(sc, vBufB);
671 reg &= ~vPB4;
672 pmu_write_reg(sc, vBufB, reg);
673 }
674
675 static void
pmu_ack_on(struct pmu_softc * sc)676 pmu_ack_on(struct pmu_softc *sc)
677 {
678 uint8_t reg;
679
680 reg = pmu_read_reg(sc, vBufB);
681 reg |= vPB4;
682 pmu_write_reg(sc, vBufB, reg);
683 }
684
685 static void
pmu_intr(void * arg)686 pmu_intr(void *arg)
687 {
688 device_t dev;
689 struct pmu_softc *sc;
690
691 unsigned int len;
692 uint8_t resp[16];
693 uint8_t junk[16];
694
695 dev = (device_t)arg;
696 sc = device_get_softc(dev);
697
698 mtx_lock(&sc->sc_mutex);
699
700 pmu_write_reg(sc, vIFR, 0x90); /* Clear 'em */
701 len = pmu_send(sc, PMU_INT_ACK, 0, NULL, 16, resp);
702
703 mtx_unlock(&sc->sc_mutex);
704
705 if ((len < 1) || (resp[1] == 0)) {
706 return;
707 }
708
709 if (resp[1] & PMU_INT_ADB) {
710 /*
711 * the PMU will turn off autopolling after each command that
712 * it did not issue, so we assume any but TALK R0 is ours and
713 * re-enable autopoll here whenever we receive an ACK for a
714 * non TR0 command.
715 */
716 mtx_lock(&sc->sc_mutex);
717
718 if ((resp[2] & 0x0f) != (ADB_COMMAND_TALK << 2)) {
719 if (sc->sc_autopoll) {
720 uint8_t cmd[] = {0, PMU_SET_POLL_MASK,
721 (sc->sc_autopoll >> 8) & 0xff,
722 sc->sc_autopoll & 0xff};
723
724 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, junk);
725 }
726 }
727
728 mtx_unlock(&sc->sc_mutex);
729
730 adb_receive_raw_packet(sc->adb_bus,resp[1],resp[2],
731 len - 3,&resp[3]);
732 }
733 if (resp[1] & PMU_INT_ENVIRONMENT) {
734 /* if the lid was just closed, notify devd. */
735 if ((resp[2] & PMU_ENV_LID_CLOSED) && (!sc->lid_closed)) {
736 sc->lid_closed = 1;
737 devctl_notify("PMU", "lid", "close", NULL);
738 }
739 else if (!(resp[2] & PMU_ENV_LID_CLOSED) && (sc->lid_closed)) {
740 /* if the lid was just opened, notify devd. */
741 sc->lid_closed = 0;
742 devctl_notify("PMU", "lid", "open", NULL);
743 }
744 if (resp[2] & PMU_ENV_POWER)
745 devctl_notify("PMU", "Button", "pressed", NULL);
746 }
747 }
748
749 static u_int
pmu_adb_send(device_t dev,u_char command_byte,int len,u_char * data,u_char poll)750 pmu_adb_send(device_t dev, u_char command_byte, int len, u_char *data,
751 u_char poll)
752 {
753 struct pmu_softc *sc = device_get_softc(dev);
754 int i,replen;
755 uint8_t packet[16], resp[16];
756
757 /* construct an ADB command packet and send it */
758
759 packet[0] = command_byte;
760
761 packet[1] = 0;
762 packet[2] = len;
763 for (i = 0; i < len; i++)
764 packet[i + 3] = data[i];
765
766 mtx_lock(&sc->sc_mutex);
767 replen = pmu_send(sc, PMU_ADB_CMD, len + 3, packet, 16, resp);
768 mtx_unlock(&sc->sc_mutex);
769
770 if (poll)
771 pmu_poll(dev);
772
773 return 0;
774 }
775
776 static u_int
pmu_adb_autopoll(device_t dev,uint16_t mask)777 pmu_adb_autopoll(device_t dev, uint16_t mask)
778 {
779 struct pmu_softc *sc = device_get_softc(dev);
780
781 /* magical incantation to re-enable autopolling */
782 uint8_t cmd[] = {0, PMU_SET_POLL_MASK, (mask >> 8) & 0xff, mask & 0xff};
783 uint8_t resp[16];
784
785 mtx_lock(&sc->sc_mutex);
786
787 if (sc->sc_autopoll == mask) {
788 mtx_unlock(&sc->sc_mutex);
789 return 0;
790 }
791
792 sc->sc_autopoll = mask & 0xffff;
793
794 if (mask)
795 pmu_send(sc, PMU_ADB_CMD, 4, cmd, 16, resp);
796 else
797 pmu_send(sc, PMU_ADB_POLL_OFF, 0, NULL, 16, resp);
798
799 mtx_unlock(&sc->sc_mutex);
800
801 return 0;
802 }
803
804 static void
pmu_shutdown(void * xsc,int howto)805 pmu_shutdown(void *xsc, int howto)
806 {
807 struct pmu_softc *sc = xsc;
808 uint8_t cmd[] = {'M', 'A', 'T', 'T'};
809
810 if (howto & RB_HALT)
811 pmu_send(sc, PMU_POWER_OFF, 4, cmd, 0, NULL);
812 else
813 pmu_send(sc, PMU_RESET_CPU, 0, NULL, 0, NULL);
814
815 for (;;);
816 }
817
818 static void
pmu_set_sleepled(void * xsc,int onoff)819 pmu_set_sleepled(void *xsc, int onoff)
820 {
821 struct pmu_softc *sc = xsc;
822 uint8_t cmd[] = {4, 0, 0};
823
824 cmd[2] = onoff;
825
826 mtx_lock(&sc->sc_mutex);
827 pmu_send(sc, PMU_SET_SLEEPLED, 3, cmd, 0, NULL);
828 mtx_unlock(&sc->sc_mutex);
829 }
830
831 static int
pmu_server_mode(SYSCTL_HANDLER_ARGS)832 pmu_server_mode(SYSCTL_HANDLER_ARGS)
833 {
834 struct pmu_softc *sc = arg1;
835
836 u_int server_mode = 0;
837 uint8_t getcmd[] = {PMU_PWR_GET_POWERUP_EVENTS};
838 uint8_t setcmd[] = {0, 0, PMU_PWR_WAKEUP_AC_INSERT};
839 uint8_t resp[3];
840 int error, len;
841
842 mtx_lock(&sc->sc_mutex);
843 len = pmu_send(sc, PMU_POWER_EVENTS, 1, getcmd, 3, resp);
844 mtx_unlock(&sc->sc_mutex);
845
846 if (len == 3)
847 server_mode = (resp[2] & PMU_PWR_WAKEUP_AC_INSERT) ? 1 : 0;
848
849 error = sysctl_handle_int(oidp, &server_mode, 0, req);
850
851 if (len != 3)
852 return (EINVAL);
853
854 if (error || !req->newptr)
855 return (error);
856
857 if (server_mode == 1)
858 setcmd[0] = PMU_PWR_SET_POWERUP_EVENTS;
859 else if (server_mode == 0)
860 setcmd[0] = PMU_PWR_CLR_POWERUP_EVENTS;
861 else
862 return (EINVAL);
863
864 setcmd[1] = resp[1];
865
866 mtx_lock(&sc->sc_mutex);
867 pmu_send(sc, PMU_POWER_EVENTS, 3, setcmd, 2, resp);
868 mtx_unlock(&sc->sc_mutex);
869
870 return (0);
871 }
872
873 static int
pmu_query_battery(struct pmu_softc * sc,int batt,struct pmu_battstate * info)874 pmu_query_battery(struct pmu_softc *sc, int batt, struct pmu_battstate *info)
875 {
876 uint8_t reg;
877 uint8_t resp[16];
878 int len;
879
880 reg = batt + 1;
881
882 mtx_lock(&sc->sc_mutex);
883 len = pmu_send(sc, PMU_SMART_BATTERY_STATE, 1, ®, 16, resp);
884 mtx_unlock(&sc->sc_mutex);
885
886 if (len < 3)
887 return (-1);
888
889 /* All PMU battery info replies share a common header:
890 * Byte 1 Payload Format
891 * Byte 2 Battery Flags
892 */
893
894 info->state = resp[2];
895
896 switch (resp[1]) {
897 case 3:
898 case 4:
899 /*
900 * Formats 3 and 4 appear to be the same:
901 * Byte 3 Charge
902 * Byte 4 Max Charge
903 * Byte 5 Current
904 * Byte 6 Voltage
905 */
906
907 info->charge = resp[3];
908 info->maxcharge = resp[4];
909 /* Current can be positive or negative */
910 info->current = (int8_t)resp[5];
911 info->voltage = resp[6];
912 break;
913 case 5:
914 /*
915 * Formats 5 is a wider version of formats 3 and 4
916 * Byte 3-4 Charge
917 * Byte 5-6 Max Charge
918 * Byte 7-8 Current
919 * Byte 9-10 Voltage
920 */
921
922 info->charge = (resp[3] << 8) | resp[4];
923 info->maxcharge = (resp[5] << 8) | resp[6];
924 /* Current can be positive or negative */
925 info->current = (int16_t)((resp[7] << 8) | resp[8]);
926 info->voltage = (resp[9] << 8) | resp[10];
927 break;
928 default:
929 device_printf(sc->sc_dev, "Unknown battery info format (%d)!\n",
930 resp[1]);
931 return (-1);
932 }
933
934 return (0);
935 }
936
937 static void
pmu_battery_notify(struct pmu_battstate * batt,struct pmu_battstate * old)938 pmu_battery_notify(struct pmu_battstate *batt, struct pmu_battstate *old)
939 {
940 char notify_buf[16];
941 int new_acline, old_acline;
942
943 new_acline = (batt->state & PMU_PWR_AC_PRESENT) ? 1 : 0;
944 old_acline = (old->state & PMU_PWR_AC_PRESENT) ? 1 : 0;
945
946 if (new_acline != old_acline) {
947 snprintf(notify_buf, sizeof(notify_buf),
948 "notify=0x%02x", new_acline);
949 devctl_notify("PMU", "POWER", "ACLINE", notify_buf);
950 }
951 }
952
953 static void
pmu_battquery_proc()954 pmu_battquery_proc()
955 {
956 struct pmu_softc *sc;
957 struct pmu_battstate batt;
958 struct pmu_battstate cur_batt;
959 int error;
960
961 sc = device_get_softc(pmu);
962
963 bzero(&cur_batt, sizeof(cur_batt));
964 while (1) {
965 kproc_suspend_check(curproc);
966 error = pmu_query_battery(sc, 0, &batt);
967 pmu_battery_notify(&batt, &cur_batt);
968 cur_batt = batt;
969 pause("pmu_batt", hz);
970 }
971 }
972
973 static int
pmu_battmon(SYSCTL_HANDLER_ARGS)974 pmu_battmon(SYSCTL_HANDLER_ARGS)
975 {
976 struct pmu_softc *sc;
977 int error, result;
978
979 sc = arg1;
980 result = pmu_battmon_enabled;
981
982 error = sysctl_handle_int(oidp, &result, 0, req);
983
984 if (error || !req->newptr)
985 return (error);
986
987 if (!result && pmu_battmon_enabled)
988 error = kproc_suspend(pmubattproc, hz);
989 else if (result && pmu_battmon_enabled == 0)
990 error = kproc_resume(pmubattproc);
991 pmu_battmon_enabled = (result != 0);
992
993 return (error);
994 }
995
996 static int
pmu_acline_state(SYSCTL_HANDLER_ARGS)997 pmu_acline_state(SYSCTL_HANDLER_ARGS)
998 {
999 struct pmu_softc *sc;
1000 struct pmu_battstate batt;
1001 int error, result;
1002
1003 sc = arg1;
1004
1005 /* The PMU treats the AC line status as a property of the battery */
1006 error = pmu_query_battery(sc, 0, &batt);
1007
1008 if (error != 0)
1009 return (error);
1010
1011 result = (batt.state & PMU_PWR_AC_PRESENT) ? 1 : 0;
1012 error = sysctl_handle_int(oidp, &result, 0, req);
1013
1014 return (error);
1015 }
1016
1017 static int
pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS)1018 pmu_battquery_sysctl(SYSCTL_HANDLER_ARGS)
1019 {
1020 struct pmu_softc *sc;
1021 struct pmu_battstate batt;
1022 int error, result;
1023
1024 sc = arg1;
1025
1026 error = pmu_query_battery(sc, arg2 & 0x00ff, &batt);
1027
1028 if (error != 0)
1029 return (error);
1030
1031 switch (arg2 & 0xff00) {
1032 case PMU_BATSYSCTL_PRESENT:
1033 result = (batt.state & PMU_PWR_BATT_PRESENT) ? 1 : 0;
1034 break;
1035 case PMU_BATSYSCTL_CHARGING:
1036 result = (batt.state & PMU_PWR_BATT_CHARGING) ? 1 : 0;
1037 break;
1038 case PMU_BATSYSCTL_CHARGE:
1039 result = batt.charge;
1040 break;
1041 case PMU_BATSYSCTL_MAXCHARGE:
1042 result = batt.maxcharge;
1043 break;
1044 case PMU_BATSYSCTL_CURRENT:
1045 result = batt.current;
1046 break;
1047 case PMU_BATSYSCTL_VOLTAGE:
1048 result = batt.voltage;
1049 break;
1050 case PMU_BATSYSCTL_TIME:
1051 /* Time remaining until full charge/discharge, in minutes */
1052
1053 if (batt.current >= 0)
1054 result = (batt.maxcharge - batt.charge) /* mAh */ * 60
1055 / batt.current /* mA */;
1056 else
1057 result = (batt.charge /* mAh */ * 60)
1058 / (-batt.current /* mA */);
1059 break;
1060 case PMU_BATSYSCTL_LIFE:
1061 /* Battery charge fraction, in percent */
1062 result = (batt.charge * 100) / batt.maxcharge;
1063 break;
1064 default:
1065 /* This should never happen */
1066 result = -1;
1067 };
1068
1069 error = sysctl_handle_int(oidp, &result, 0, req);
1070
1071 return (error);
1072 }
1073
1074 #define DIFF19041970 2082844800
1075
1076 static int
pmu_gettime(device_t dev,struct timespec * ts)1077 pmu_gettime(device_t dev, struct timespec *ts)
1078 {
1079 struct pmu_softc *sc = device_get_softc(dev);
1080 uint8_t resp[16];
1081 uint32_t sec;
1082
1083 mtx_lock(&sc->sc_mutex);
1084 pmu_send(sc, PMU_READ_RTC, 0, NULL, 16, resp);
1085 mtx_unlock(&sc->sc_mutex);
1086
1087 memcpy(&sec, &resp[1], 4);
1088 ts->tv_sec = sec - DIFF19041970;
1089 ts->tv_nsec = 0;
1090
1091 return (0);
1092 }
1093
1094 static int
pmu_settime(device_t dev,struct timespec * ts)1095 pmu_settime(device_t dev, struct timespec *ts)
1096 {
1097 struct pmu_softc *sc = device_get_softc(dev);
1098 uint32_t sec;
1099
1100 sec = ts->tv_sec + DIFF19041970;
1101
1102 mtx_lock(&sc->sc_mutex);
1103 pmu_send(sc, PMU_SET_RTC, sizeof(sec), (uint8_t *)&sec, 0, NULL);
1104 mtx_unlock(&sc->sc_mutex);
1105
1106 return (0);
1107 }
1108
1109 int
pmu_set_speed(int low_speed)1110 pmu_set_speed(int low_speed)
1111 {
1112 struct pmu_softc *sc;
1113 uint8_t sleepcmd[] = {'W', 'O', 'O', 'F', 0};
1114 uint8_t resp[16];
1115
1116 sc = device_get_softc(pmu);
1117 pmu_write_reg(sc, vIER, 0x10);
1118 spinlock_enter();
1119 mtdec(0x7fffffff);
1120 mb();
1121 mtdec(0x7fffffff);
1122
1123 sleepcmd[4] = low_speed;
1124 pmu_send(sc, PMU_CPU_SPEED, 5, sleepcmd, 16, resp);
1125 unin_chip_sleep(NULL, 1);
1126 platform_sleep();
1127 unin_chip_wake(NULL);
1128
1129 mtdec(1); /* Force a decrementer exception */
1130 spinlock_exit();
1131 pmu_write_reg(sc, vIER, 0x90);
1132
1133 return (0);
1134 }
1135