2 * Copyright (c) 2009 Michael Gmelin <freebsd@grem.de>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/dev/acpi_support/acpi_hp.c,v 1.7 2010/09/11 08:09:14 avg Exp $
30 * Driver for extra ACPI-controlled features found on HP laptops
31 * that use a WMI enabled BIOS (e.g. HP Compaq 8510p and 6510p).
32 * Allows to control and read status of integrated hardware and read
33 * BIOS settings through CMI.
34 * Inspired by the hp-wmi driver, which implements a subset of these
35 * features (hotkeys) on Linux.
38 * http://h20331.www2.hp.com/Hpsub/downloads/cmi_whitepaper.pdf
40 * http://www.kernel.org
42 * http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx
46 #include <sys/param.h>
50 #include <sys/kernel.h>
53 #include <sys/module.h>
54 #include <sys/sysctl.h>
55 #include <sys/device.h>
59 #include <dev/acpica/acpivar.h>
60 #include "acpi_wmi_if.h"
62 #define _COMPONENT ACPI_OEM
63 ACPI_MODULE_NAME("HP")
65 #define ACPI_HP_WMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
66 #define ACPI_HP_WMI_BIOS_GUID "5FB7F034-2C63-45E9-BE91-3D44E2C707E4"
67 #define ACPI_HP_WMI_CMI_GUID "2D114B49-2DFB-4130-B8FE-4A3C09E75133"
69 #define ACPI_HP_WMI_DISPLAY_COMMAND 0x1
70 #define ACPI_HP_WMI_HDDTEMP_COMMAND 0x2
71 #define ACPI_HP_WMI_ALS_COMMAND 0x3
72 #define ACPI_HP_WMI_DOCK_COMMAND 0x4
73 #define ACPI_HP_WMI_WIRELESS_COMMAND 0x5
75 #define ACPI_HP_METHOD_WLAN_ENABLED 1
76 #define ACPI_HP_METHOD_WLAN_RADIO 2
77 #define ACPI_HP_METHOD_WLAN_ON_AIR 3
78 #define ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON 4
79 #define ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF 5
80 #define ACPI_HP_METHOD_BLUETOOTH_ENABLED 6
81 #define ACPI_HP_METHOD_BLUETOOTH_RADIO 7
82 #define ACPI_HP_METHOD_BLUETOOTH_ON_AIR 8
83 #define ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON 9
84 #define ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF 10
85 #define ACPI_HP_METHOD_WWAN_ENABLED 11
86 #define ACPI_HP_METHOD_WWAN_RADIO 12
87 #define ACPI_HP_METHOD_WWAN_ON_AIR 13
88 #define ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON 14
89 #define ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF 15
90 #define ACPI_HP_METHOD_ALS 16
91 #define ACPI_HP_METHOD_DISPLAY 17
92 #define ACPI_HP_METHOD_HDDTEMP 18
93 #define ACPI_HP_METHOD_DOCK 19
94 #define ACPI_HP_METHOD_CMI_DETAIL 20
95 #define ACPI_HP_METHOD_VERBOSE 21
97 #define HP_MASK_WWAN_ON_AIR 0x1000000
98 #define HP_MASK_BLUETOOTH_ON_AIR 0x10000
99 #define HP_MASK_WLAN_ON_AIR 0x100
100 #define HP_MASK_WWAN_RADIO 0x8000000
101 #define HP_MASK_BLUETOOTH_RADIO 0x80000
102 #define HP_MASK_WLAN_RADIO 0x800
103 #define HP_MASK_WWAN_ENABLED 0x2000000
104 #define HP_MASK_BLUETOOTH_ENABLED 0x20000
105 #define HP_MASK_WLAN_ENABLED 0x200
107 #define ACPI_HP_CMI_DETAIL_PATHS 0x01
108 #define ACPI_HP_CMI_DETAIL_ENUMS 0x02
109 #define ACPI_HP_CMI_DETAIL_FLAGS 0x04
110 #define ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE 0x08
112 struct acpi_hp_inst_seq_pair {
113 UINT32 sequence; /* sequence number as suggested by cmi bios */
114 UINT8 instance; /* object instance on guid */
117 struct acpi_hp_softc {
120 int has_notify; /* notification GUID found */
121 int has_cmi; /* CMI GUID found */
122 int cmi_detail; /* CMI detail level
124 int verbose; /* add debug output */
125 int wlan_enable_if_radio_on; /* set by sysctl */
126 int wlan_disable_if_radio_off; /* set by sysctl */
127 int bluetooth_enable_if_radio_on; /* set by sysctl */
128 int bluetooth_disable_if_radio_off; /* set by sysctl */
129 int wwan_enable_if_radio_on; /* set by sysctl */
130 int wwan_disable_if_radio_off; /* set by sysctl */
131 int was_wlan_on_air; /* last known WLAN
133 int was_bluetooth_on_air; /* last known BT
135 int was_wwan_on_air; /* last known WWAN
137 struct sysctl_ctx_list sysctl_ctx;
138 struct sysctl_oid *sysctl_tree;
139 struct cdev *hpcmi_dev_t; /* hpcmi device handle */
140 struct sbuf hpcmi_sbuf; /* /dev/hpcmi output sbuf */
141 pid_t hpcmi_open_pid; /* pid operating on
143 int hpcmi_bufptr; /* current pointer position
144 in /dev/hpcmi output buffer
146 int cmi_order_size; /* size of cmi_order list */
147 struct acpi_hp_inst_seq_pair cmi_order[128]; /* list of CMI
148 instances ordered by BIOS suggested sequence */
156 } acpi_hp_sysctls[] = {
158 .name = "wlan_enabled",
159 .method = ACPI_HP_METHOD_WLAN_ENABLED,
160 .description = "Enable/Disable WLAN (WiFi)",
161 .access = CTLTYPE_INT | CTLFLAG_RW
164 .name = "wlan_radio",
165 .method = ACPI_HP_METHOD_WLAN_RADIO,
166 .description = "WLAN radio status",
167 .access = CTLTYPE_INT | CTLFLAG_RD
170 .name = "wlan_on_air",
171 .method = ACPI_HP_METHOD_WLAN_ON_AIR,
172 .description = "WLAN radio ready to use (enabled and radio)",
173 .access = CTLTYPE_INT | CTLFLAG_RD
176 .name = "wlan_enable_if_radio_on",
177 .method = ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON,
178 .description = "Enable WLAN if radio is turned on",
179 .access = CTLTYPE_INT | CTLFLAG_RW
182 .name = "wlan_disable_if_radio_off",
183 .method = ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF,
184 .description = "Disable WLAN if radio is turned off",
185 .access = CTLTYPE_INT | CTLFLAG_RW
188 .name = "bt_enabled",
189 .method = ACPI_HP_METHOD_BLUETOOTH_ENABLED,
190 .description = "Enable/Disable Bluetooth",
191 .access = CTLTYPE_INT | CTLFLAG_RW
195 .method = ACPI_HP_METHOD_BLUETOOTH_RADIO,
196 .description = "Bluetooth radio status",
197 .access = CTLTYPE_INT | CTLFLAG_RD
201 .method = ACPI_HP_METHOD_BLUETOOTH_ON_AIR,
202 .description = "Bluetooth radio ready to use"
203 " (enabled and radio)",
204 .access = CTLTYPE_INT | CTLFLAG_RD
207 .name = "bt_enable_if_radio_on",
208 .method = ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON,
209 .description = "Enable bluetooth if radio is turned on",
210 .access = CTLTYPE_INT | CTLFLAG_RW
213 .name = "bt_disable_if_radio_off",
214 .method = ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF,
215 .description = "Disable bluetooth if radio is turned off",
216 .access = CTLTYPE_INT | CTLFLAG_RW
219 .name = "wwan_enabled",
220 .method = ACPI_HP_METHOD_WWAN_ENABLED,
221 .description = "Enable/Disable WWAN (UMTS)",
222 .access = CTLTYPE_INT | CTLFLAG_RW
225 .name = "wwan_radio",
226 .method = ACPI_HP_METHOD_WWAN_RADIO,
227 .description = "WWAN radio status",
228 .access = CTLTYPE_INT | CTLFLAG_RD
231 .name = "wwan_on_air",
232 .method = ACPI_HP_METHOD_WWAN_ON_AIR,
233 .description = "WWAN radio ready to use (enabled and radio)",
234 .access = CTLTYPE_INT | CTLFLAG_RD
237 .name = "wwan_enable_if_radio_on",
238 .method = ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON,
239 .description = "Enable WWAN if radio is turned on",
240 .access = CTLTYPE_INT | CTLFLAG_RW
243 .name = "wwan_disable_if_radio_off",
244 .method = ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF,
245 .description = "Disable WWAN if radio is turned off",
246 .access = CTLTYPE_INT | CTLFLAG_RW
249 .name = "als_enabled",
250 .method = ACPI_HP_METHOD_ALS,
251 .description = "Enable/Disable ALS (Ambient light sensor)",
252 .access = CTLTYPE_INT | CTLFLAG_RW
256 .method = ACPI_HP_METHOD_DISPLAY,
257 .description = "Display status",
258 .access = CTLTYPE_INT | CTLFLAG_RD
261 .name = "hdd_temperature",
262 .method = ACPI_HP_METHOD_HDDTEMP,
263 .description = "HDD temperature",
264 .access = CTLTYPE_INT | CTLFLAG_RD
268 .method = ACPI_HP_METHOD_DOCK,
269 .description = "Docking station status",
270 .access = CTLTYPE_INT | CTLFLAG_RD
273 .name = "cmi_detail",
274 .method = ACPI_HP_METHOD_CMI_DETAIL,
275 .description = "Details shown in CMI output "
277 .access = CTLTYPE_INT | CTLFLAG_RW
281 .method = ACPI_HP_METHOD_VERBOSE,
282 .description = "Verbosity level",
283 .access = CTLTYPE_INT | CTLFLAG_RW
289 ACPI_SERIAL_DECL(hp, "HP ACPI-WMI Mapping");
291 static void acpi_hp_identify(driver_t *driver, device_t parent);
292 static int acpi_hp_probe(device_t dev);
293 static int acpi_hp_attach(device_t dev);
294 static int acpi_hp_detach(device_t dev);
296 static void acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc* sc);
297 static int acpi_hp_sysctl(SYSCTL_HANDLER_ARGS);
298 static int acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method,
299 int arg, int oldarg);
300 static int acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method);
301 static int acpi_hp_exec_wmi_command(device_t wmi_dev, int command,
302 int is_write, int val);
303 static void acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context);
304 static int acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid,
305 UINT8 instance, char* outbuf, size_t outsize,
306 UINT32* sequence, int detail);
307 static void acpi_hp_hex_decode(char* buffer);
309 static d_open_t acpi_hp_hpcmi_open;
310 static d_close_t acpi_hp_hpcmi_close;
311 static d_read_t acpi_hp_hpcmi_read;
313 /* handler /dev/hpcmi device */
314 static struct dev_ops hpcmi_ops = {
315 { "hpcmi", 0, D_MPSAFE },
316 .d_open = acpi_hp_hpcmi_open,
317 .d_close = acpi_hp_hpcmi_close,
318 .d_read = acpi_hp_hpcmi_read,
321 static device_method_t acpi_hp_methods[] = {
322 DEVMETHOD(device_identify, acpi_hp_identify),
323 DEVMETHOD(device_probe, acpi_hp_probe),
324 DEVMETHOD(device_attach, acpi_hp_attach),
325 DEVMETHOD(device_detach, acpi_hp_detach),
329 static driver_t acpi_hp_driver = {
332 sizeof(struct acpi_hp_softc),
335 static devclass_t acpi_hp_devclass;
337 DRIVER_MODULE(acpi_hp, acpi_wmi, acpi_hp_driver, acpi_hp_devclass,
339 MODULE_VERSION(acpi_hp, 1);
340 MODULE_DEPEND(acpi_hp, acpi_wmi, 1, 1, 1);
341 MODULE_DEPEND(acpi_hp, acpi, 1, 1, 1);
344 acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc *sc)
348 int new_bluetooth_status;
351 wireless = acpi_hp_exec_wmi_command(sc->wmi_dev,
352 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
353 new_wlan_status = -1;
354 new_bluetooth_status = -1;
355 new_wwan_status = -1;
358 device_printf(sc->wmi_dev, "Wireless status is %x\n", wireless);
359 if (sc->wlan_disable_if_radio_off && !(wireless & HP_MASK_WLAN_RADIO)
360 && (wireless & HP_MASK_WLAN_ENABLED)) {
361 acpi_hp_exec_wmi_command(sc->wmi_dev,
362 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x100);
365 else if (sc->wlan_enable_if_radio_on && (wireless & HP_MASK_WLAN_RADIO)
366 && !(wireless & HP_MASK_WLAN_ENABLED)) {
367 acpi_hp_exec_wmi_command(sc->wmi_dev,
368 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x101);
371 if (sc->bluetooth_disable_if_radio_off &&
372 !(wireless & HP_MASK_BLUETOOTH_RADIO) &&
373 (wireless & HP_MASK_BLUETOOTH_ENABLED)) {
374 acpi_hp_exec_wmi_command(sc->wmi_dev,
375 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x200);
376 new_bluetooth_status = 0;
378 else if (sc->bluetooth_enable_if_radio_on &&
379 (wireless & HP_MASK_BLUETOOTH_RADIO) &&
380 !(wireless & HP_MASK_BLUETOOTH_ENABLED)) {
381 acpi_hp_exec_wmi_command(sc->wmi_dev,
382 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x202);
383 new_bluetooth_status = 1;
385 if (sc->wwan_disable_if_radio_off &&
386 !(wireless & HP_MASK_WWAN_RADIO) &&
387 (wireless & HP_MASK_WWAN_ENABLED)) {
388 acpi_hp_exec_wmi_command(sc->wmi_dev,
389 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x400);
392 else if (sc->wwan_enable_if_radio_on &&
393 (wireless & HP_MASK_WWAN_RADIO) &&
394 !(wireless & HP_MASK_WWAN_ENABLED)) {
395 acpi_hp_exec_wmi_command(sc->wmi_dev,
396 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x404);
400 if (new_wlan_status == -1) {
401 new_wlan_status = (wireless & HP_MASK_WLAN_ON_AIR);
402 if ((new_wlan_status?1:0) != sc->was_wlan_on_air) {
403 sc->was_wlan_on_air = sc->was_wlan_on_air?0:1;
405 device_printf(sc->wmi_dev,
406 "WLAN on air changed to %i "
407 "(new_wlan_status is %i)\n",
408 sc->was_wlan_on_air, new_wlan_status);
409 acpi_UserNotify("HP", ACPI_ROOT_OBJECT,
410 0xc0+sc->was_wlan_on_air);
413 if (new_bluetooth_status == -1) {
414 new_bluetooth_status = (wireless & HP_MASK_BLUETOOTH_ON_AIR);
415 if ((new_bluetooth_status?1:0) != sc->was_bluetooth_on_air) {
416 sc->was_bluetooth_on_air = sc->was_bluetooth_on_air?
419 device_printf(sc->wmi_dev,
420 "BLUETOOTH on air changed"
421 " to %i (new_bluetooth_status is %i)\n",
422 sc->was_bluetooth_on_air,
423 new_bluetooth_status);
424 acpi_UserNotify("HP", ACPI_ROOT_OBJECT,
425 0xd0+sc->was_bluetooth_on_air);
428 if (new_wwan_status == -1) {
429 new_wwan_status = (wireless & HP_MASK_WWAN_ON_AIR);
430 if ((new_wwan_status?1:0) != sc->was_wwan_on_air) {
431 sc->was_wwan_on_air = sc->was_wwan_on_air?0:1;
433 device_printf(sc->wmi_dev,
434 "WWAN on air changed to %i"
435 " (new_wwan_status is %i)\n",
436 sc->was_wwan_on_air, new_wwan_status);
437 acpi_UserNotify("HP", ACPI_ROOT_OBJECT,
438 0xe0+sc->was_wwan_on_air);
444 acpi_hp_identify(driver_t *driver, device_t parent)
447 /* Don't do anything if driver is disabled. */
448 if (acpi_disabled("hp"))
451 /* Add only a single device instance. */
452 if (device_find_child(parent, "acpi_hp", -1) != NULL)
455 if (BUS_ADD_CHILD(parent, parent, 0, "acpi_hp", -1) == NULL)
456 device_printf(parent, "add acpi_hp child failed\n");
460 acpi_hp_probe(device_t dev)
463 device_set_desc(dev, "HP ACPI-WMI Mapping");
468 acpi_hp_attach(device_t dev)
470 struct acpi_hp_softc *sc;
471 struct acpi_softc *acpi_sc;
474 ACPI_SERIAL_INIT(hp);
475 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
477 sc = device_get_softc(dev);
481 sc->bluetooth_enable_if_radio_on = 0;
482 sc->bluetooth_disable_if_radio_off = 0;
483 sc->wlan_enable_if_radio_on = 0;
484 sc->wlan_disable_if_radio_off = 0;
485 sc->wlan_enable_if_radio_on = 0;
486 sc->wlan_disable_if_radio_off = 0;
487 sc->was_wlan_on_air = 0;
488 sc->was_bluetooth_on_air = 0;
489 sc->was_wwan_on_air = 0;
491 sc->cmi_order_size = -1;
493 memset(sc->cmi_order, 0, sizeof(sc->cmi_order));
494 sc->wmi_dev = device_get_parent(dev);
495 acpi_sc = acpi_device_get_parent_softc(sc->wmi_dev);
497 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
498 ACPI_HP_WMI_BIOS_GUID)) {
500 "WMI device does not provide the HP BIOS GUID\n");
503 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
504 ACPI_HP_WMI_EVENT_GUID)) {
506 "HP event GUID detected, installing event handler\n");
507 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev,
508 ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) {
510 "Could not install notification handler!\n");
517 ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID)
519 device_printf(dev, "HP CMI GUID detected\n");
523 sc->hpcmi_dev_t = make_dev(&hpcmi_ops, 0, UID_ROOT,
524 GID_WHEEL, 0644, "hpcmi");
525 sc->hpcmi_dev_t->si_drv1 = sc;
526 sc->hpcmi_open_pid = 0;
527 sc->hpcmi_bufptr = -1;
530 ACPI_SERIAL_BEGIN(hp);
532 sysctl_ctx_init(&sc->sysctl_ctx);
533 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
534 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO,
535 "hp", CTLFLAG_RD, 0, "");
537 for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) {
539 if ((!sc->has_notify &&
540 (acpi_hp_sysctls[i].method ==
541 ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON ||
542 acpi_hp_sysctls[i].method ==
543 ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF ||
544 acpi_hp_sysctls[i].method ==
545 ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON ||
546 acpi_hp_sysctls[i].method ==
547 ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF ||
548 acpi_hp_sysctls[i].method ==
549 ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON ||
550 acpi_hp_sysctls[i].method ==
551 ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) ||
552 (arg = acpi_hp_sysctl_get(sc,
553 acpi_hp_sysctls[i].method)) < 0) {
556 if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) {
557 sc->was_wlan_on_air = arg;
559 else if (acpi_hp_sysctls[i].method ==
560 ACPI_HP_METHOD_BLUETOOTH_ON_AIR) {
561 sc->was_bluetooth_on_air = arg;
563 else if (acpi_hp_sysctls[i].method ==
564 ACPI_HP_METHOD_WWAN_ON_AIR) {
565 sc->was_wwan_on_air = arg;
568 SYSCTL_ADD_PROC(&sc->sysctl_ctx,
569 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
570 acpi_hp_sysctls[i].name, acpi_hp_sysctls[i].access,
571 sc, i, acpi_hp_sysctl, "I",
572 acpi_hp_sysctls[i].description);
580 acpi_hp_detach(device_t dev)
584 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
585 struct acpi_hp_softc *sc = device_get_softc(dev);
586 if (sc->has_cmi && sc->hpcmi_open_pid != 0) {
590 if (sc->has_notify) {
591 ACPI_WMI_REMOVE_EVENT_HANDLER(dev,
592 ACPI_HP_WMI_EVENT_GUID);
594 sysctl_ctx_free(&sc->sysctl_ctx);
595 if (sc->hpcmi_bufptr != -1) {
596 sbuf_delete(&sc->hpcmi_sbuf);
597 sc->hpcmi_bufptr = -1;
599 sc->hpcmi_open_pid = 0;
600 destroy_dev(sc->hpcmi_dev_t);
608 acpi_hp_sysctl(SYSCTL_HANDLER_ARGS)
610 struct acpi_hp_softc *sc;
617 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
619 sc = (struct acpi_hp_softc *)oidp->oid_arg1;
620 function = oidp->oid_arg2;
621 method = acpi_hp_sysctls[function].method;
623 ACPI_SERIAL_BEGIN(hp);
624 arg = acpi_hp_sysctl_get(sc, method);
626 error = sysctl_handle_int(oidp, &arg, 0, req);
627 if (!error && req->newptr != NULL) {
628 error = acpi_hp_sysctl_set(sc, method, arg, oldarg);
636 acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method)
640 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
641 ACPI_SERIAL_ASSERT(hp);
644 case ACPI_HP_METHOD_WLAN_ENABLED:
645 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
646 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
647 val = ((val & HP_MASK_WLAN_ENABLED) != 0);
649 case ACPI_HP_METHOD_WLAN_RADIO:
650 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
651 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
652 val = ((val & HP_MASK_WLAN_RADIO) != 0);
654 case ACPI_HP_METHOD_WLAN_ON_AIR:
655 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
656 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
657 val = ((val & HP_MASK_WLAN_ON_AIR) != 0);
659 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
660 val = sc->wlan_enable_if_radio_on;
662 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
663 val = sc->wlan_disable_if_radio_off;
665 case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
666 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
667 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
668 val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0);
670 case ACPI_HP_METHOD_BLUETOOTH_RADIO:
671 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
672 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
673 val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0);
675 case ACPI_HP_METHOD_BLUETOOTH_ON_AIR:
676 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
677 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
678 val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0);
680 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
681 val = sc->bluetooth_enable_if_radio_on;
683 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
684 val = sc->bluetooth_disable_if_radio_off;
686 case ACPI_HP_METHOD_WWAN_ENABLED:
687 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
688 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
689 val = ((val & HP_MASK_WWAN_ENABLED) != 0);
691 case ACPI_HP_METHOD_WWAN_RADIO:
692 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
693 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
694 val = ((val & HP_MASK_WWAN_RADIO) != 0);
696 case ACPI_HP_METHOD_WWAN_ON_AIR:
697 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
698 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
699 val = ((val & HP_MASK_WWAN_ON_AIR) != 0);
701 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
702 val = sc->wwan_enable_if_radio_on;
704 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
705 val = sc->wwan_disable_if_radio_off;
707 case ACPI_HP_METHOD_ALS:
708 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
709 ACPI_HP_WMI_ALS_COMMAND, 0, 0);
711 case ACPI_HP_METHOD_DISPLAY:
712 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
713 ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0);
715 case ACPI_HP_METHOD_HDDTEMP:
716 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
717 ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0);
719 case ACPI_HP_METHOD_DOCK:
720 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
721 ACPI_HP_WMI_DOCK_COMMAND, 0, 0);
723 case ACPI_HP_METHOD_CMI_DETAIL:
724 val = sc->cmi_detail;
726 case ACPI_HP_METHOD_VERBOSE:
735 acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg)
737 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
738 ACPI_SERIAL_ASSERT(hp);
740 if (method != ACPI_HP_METHOD_CMI_DETAIL &&
741 method != ACPI_HP_METHOD_VERBOSE)
746 case ACPI_HP_METHOD_WLAN_ENABLED:
747 return (acpi_hp_exec_wmi_command(sc->wmi_dev,
748 ACPI_HP_WMI_WIRELESS_COMMAND, 1,
750 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
751 sc->wlan_enable_if_radio_on = arg;
752 acpi_hp_evaluate_auto_on_off(sc);
754 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
755 sc->wlan_disable_if_radio_off = arg;
756 acpi_hp_evaluate_auto_on_off(sc);
758 case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
759 return (acpi_hp_exec_wmi_command(sc->wmi_dev,
760 ACPI_HP_WMI_WIRELESS_COMMAND, 1,
762 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
763 sc->bluetooth_enable_if_radio_on = arg;
764 acpi_hp_evaluate_auto_on_off(sc);
766 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
767 sc->bluetooth_disable_if_radio_off = arg?1:0;
768 acpi_hp_evaluate_auto_on_off(sc);
770 case ACPI_HP_METHOD_WWAN_ENABLED:
771 return (acpi_hp_exec_wmi_command(sc->wmi_dev,
772 ACPI_HP_WMI_WIRELESS_COMMAND, 1,
774 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
775 sc->wwan_enable_if_radio_on = arg?1:0;
776 acpi_hp_evaluate_auto_on_off(sc);
778 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
779 sc->wwan_disable_if_radio_off = arg?1:0;
780 acpi_hp_evaluate_auto_on_off(sc);
782 case ACPI_HP_METHOD_ALS:
783 return (acpi_hp_exec_wmi_command(sc->wmi_dev,
784 ACPI_HP_WMI_ALS_COMMAND, 1,
786 case ACPI_HP_METHOD_CMI_DETAIL:
787 sc->cmi_detail = arg;
788 if ((arg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) !=
789 (oldarg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE)) {
790 sc->cmi_order_size = -1;
793 case ACPI_HP_METHOD_VERBOSE:
803 acpi_hp_free_buffer(ACPI_BUFFER* buf) {
804 if (buf && buf->Pointer) {
805 AcpiOsFree(buf->Pointer);
810 acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context)
812 device_t dev = context;
813 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
815 struct acpi_hp_softc *sc = device_get_softc(dev);
816 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL };
818 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response);
819 obj = (ACPI_OBJECT*) response.Pointer;
820 if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) {
821 if (*((UINT8 *) obj->Buffer.Pointer) == 0x5) {
822 acpi_hp_evaluate_auto_on_off(sc);
825 acpi_hp_free_buffer(&response);
829 acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, int val)
831 UINT32 params[5] = { 0x55434553,
838 ACPI_BUFFER in = { sizeof(params), ¶ms };
839 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
842 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID,
843 0, 0x3, &in, &out))) {
844 acpi_hp_free_buffer(&out);
848 if (!obj || obj->Type != ACPI_TYPE_BUFFER) {
849 acpi_hp_free_buffer(&out);
852 result = (UINT32*) obj->Buffer.Pointer;
857 acpi_hp_free_buffer(&out);
862 static __inline char*
863 acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) {
867 if (obj->Type == ACPI_TYPE_STRING) {
868 length = obj->String.Length+1;
872 strlcpy(dst, obj->String.Pointer, length);
873 acpi_hp_hex_decode(dst);
881 * Read BIOS Setting block in instance "instance".
882 * The block returned is ACPI_TYPE_PACKAGE which should contain the following
885 * 0 Setting Name [string]
886 * 1 Value (comma separated, asterisk marks the current value) [string]
887 * 2 Path within the bios hierarchy [string]
889 * 4 DisplayInUI [int]
890 * 5 RequiresPhysicalPresence [int]
891 * 6 Sequence for ordering within the bios settings (absolute) [int]
892 * 7 Length of prerequisites array [int]
893 * 8..8+[7] PrerequisiteN [string]
894 * 9+[7] Current value (in case of enum) [string] / Array length [int]
895 * 10+[7] Enum length [int] / Array values
896 * 11+[7]ff Enum value at index x [string]
899 acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance,
900 char* outbuf, size_t outsize, UINT32* sequence, int detail)
903 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
909 char string_buffer[size];
912 *sequence = 0; /* whack gcc warning */
915 if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) {
916 acpi_hp_free_buffer(&out);
920 if (!obj || obj->Type != ACPI_TYPE_PACKAGE) {
921 acpi_hp_free_buffer(&out);
925 if (obj->Package.Count >= 8 &&
926 obj->Package.Elements[7].Type == ACPI_TYPE_INTEGER) {
927 valuebase = 8 + obj->Package.Elements[7].Integer.Value;
930 /* check if this matches our expectations based on limited knowledge */
931 if (valuebase > 7 && obj->Package.Count > valuebase + 1 &&
932 obj->Package.Elements[0].Type == ACPI_TYPE_STRING &&
933 obj->Package.Elements[1].Type == ACPI_TYPE_STRING &&
934 obj->Package.Elements[2].Type == ACPI_TYPE_STRING &&
935 obj->Package.Elements[3].Type == ACPI_TYPE_INTEGER &&
936 obj->Package.Elements[4].Type == ACPI_TYPE_INTEGER &&
937 obj->Package.Elements[5].Type == ACPI_TYPE_INTEGER &&
938 obj->Package.Elements[6].Type == ACPI_TYPE_INTEGER &&
939 obj->Package.Elements[valuebase].Type == ACPI_TYPE_STRING &&
940 obj->Package.Elements[valuebase+1].Type == ACPI_TYPE_INTEGER &&
941 obj->Package.Count > valuebase +
942 obj->Package.Elements[valuebase+1].Integer.Value
944 enumbase = valuebase + 1;
945 if (detail & ACPI_HP_CMI_DETAIL_PATHS) {
946 strlcat(outbuf, acpi_hp_get_string_from_object(
947 &obj->Package.Elements[2], string_buffer, size),
950 while (strlen(outbuf) < outlen)
951 strlcat(outbuf, " ", outsize);
953 strlcat(outbuf, acpi_hp_get_string_from_object(
954 &obj->Package.Elements[0], string_buffer, size),
957 while (strlen(outbuf) < outlen)
958 strlcat(outbuf, " ", outsize);
959 strlcat(outbuf, acpi_hp_get_string_from_object(
960 &obj->Package.Elements[valuebase], string_buffer,
964 while (strlen(outbuf) < outlen)
965 strlcat(outbuf, " ", outsize);
966 for (i = 0; i < strlen(outbuf); ++i)
967 if (outbuf[i] == '\\')
969 if (detail & ACPI_HP_CMI_DETAIL_ENUMS) {
970 for (i = enumbase + 1; i < enumbase + 1 +
971 obj->Package.Elements[enumbase].Integer.Value;
973 acpi_hp_get_string_from_object(
974 &obj->Package.Elements[i], string_buffer,
976 if (strlen(string_buffer) > 1 ||
977 (strlen(string_buffer) == 1 &&
978 string_buffer[0] != ' ')) {
980 strlcat(outbuf, "/", outsize);
982 strlcat(outbuf, " (", outsize);
983 strlcat(outbuf, string_buffer, outsize);
989 strlcat(outbuf, ")", outsize);
990 if (detail & ACPI_HP_CMI_DETAIL_FLAGS) {
991 strlcat(outbuf, obj->Package.Elements[3].Integer.Value?
992 " [ReadOnly]":"", outsize);
993 strlcat(outbuf, obj->Package.Elements[4].Integer.Value?
994 "":" [NOUI]", outsize);
995 strlcat(outbuf, obj->Package.Elements[5].Integer.Value?
996 " [RPP]":"", outsize);
998 *sequence = (UINT32) obj->Package.Elements[6].Integer.Value;
1000 acpi_hp_free_buffer(&out);
1008 * Convert given two digit hex string (hexin) to an UINT8 referenced
1010 * Return != 0 if the was a problem (invalid input)
1012 static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout)
1019 if ('0' <= hi && hi <= '9')
1021 else if ('A' <= hi && hi <= 'F')
1023 else if ('a' <= hi && hi <= 'f')
1027 if ('0' <= lo && lo <= '9')
1029 else if ('A' <= lo && lo <= 'F')
1031 else if ('a' <= lo && lo <= 'f')
1035 *byteout = (hi << 4) + lo;
1042 acpi_hp_hex_decode(char* buffer)
1045 int length = strlen(buffer);
1049 if (((int)length/2)*2 == length || length < 10) return;
1051 for (i = 0; i<length; ++i) {
1053 if (buffer[i] != ' ')
1057 if (!((buffer[i] >= '0' && buffer[i] <= '9') ||
1058 (buffer[i] >= 'A' && buffer[i] <= 'F')))
1062 for (i = 0; i<length; i += 3) {
1065 acpi_hp_hex_to_int(uin, &uout);
1066 buffer[i/3] = (char) uout;
1068 buffer[(length+1)/3] = 0;
1076 acpi_hp_hpcmi_open(struct dev_open_args *ap)
1078 struct acpi_hp_softc *sc;
1080 struct cdev *dev = ap->a_head.a_dev;
1081 struct thread *td = curthread;
1083 if (dev == NULL || dev->si_drv1 == NULL)
1087 ACPI_SERIAL_BEGIN(hp);
1088 if (sc->hpcmi_open_pid != 0) {
1092 if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND)
1096 sc->hpcmi_open_pid = td->td_proc->p_pid;
1097 sc->hpcmi_bufptr = 0;
1101 ACPI_SERIAL_END(hp);
1107 * close hpcmi device
1110 acpi_hp_hpcmi_close(struct dev_close_args *ap)
1112 struct acpi_hp_softc *sc;
1114 struct cdev *dev = ap->a_head.a_dev;
1116 if (dev == NULL || dev->si_drv1 == NULL)
1120 ACPI_SERIAL_BEGIN(hp);
1121 if (sc->hpcmi_open_pid == 0) {
1125 if (sc->hpcmi_bufptr != -1) {
1126 sbuf_delete(&sc->hpcmi_sbuf);
1127 sc->hpcmi_bufptr = -1;
1129 sc->hpcmi_open_pid = 0;
1132 ACPI_SERIAL_END(hp);
1138 * Read from hpcmi bios information
1141 acpi_hp_hpcmi_read(struct dev_read_args *ap)
1143 struct acpi_hp_softc *sc;
1148 int linesize = 1025;
1149 char line[linesize];
1150 struct cdev *dev = ap->a_head.a_dev;
1151 struct uio *buf = ap->a_uio;
1153 if (dev == NULL || dev->si_drv1 == NULL)
1157 ACPI_SERIAL_BEGIN(hp);
1158 if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid
1159 || sc->hpcmi_bufptr == -1) {
1163 if (!sbuf_done(&sc->hpcmi_sbuf)) {
1164 if (sc->cmi_order_size < 0) {
1165 maxInstance = sc->has_cmi;
1166 if (!(sc->cmi_detail &
1167 ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) &&
1171 sc->cmi_order_size = 0;
1172 for (instance = 0; instance < maxInstance;
1174 if (acpi_hp_get_cmi_block(sc->wmi_dev,
1175 ACPI_HP_WMI_CMI_GUID, instance,
1176 line, linesize, &sequence,
1178 instance = maxInstance;
1181 pos = sc->cmi_order_size;
1183 i<sc->cmi_order_size && i<127;
1185 if (sc->cmi_order[i].sequence > sequence) {
1190 for (i=sc->cmi_order_size;
1193 sc->cmi_order[i].sequence =
1194 sc->cmi_order[i-1].sequence;
1195 sc->cmi_order[i].instance =
1196 sc->cmi_order[i-1].instance;
1198 sc->cmi_order[pos].sequence =
1200 sc->cmi_order[pos].instance =
1202 sc->cmi_order_size++;
1206 for (i=0; i<sc->cmi_order_size; ++i) {
1207 if (!acpi_hp_get_cmi_block(sc->wmi_dev,
1208 ACPI_HP_WMI_CMI_GUID,
1209 sc->cmi_order[i].instance, line, linesize,
1210 &sequence, sc->cmi_detail)) {
1211 sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line);
1214 sbuf_finish(&sc->hpcmi_sbuf);
1216 if (sbuf_len(&sc->hpcmi_sbuf) <= 0) {
1217 sbuf_delete(&sc->hpcmi_sbuf);
1218 sc->hpcmi_bufptr = -1;
1219 sc->hpcmi_open_pid = 0;
1222 l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) -
1224 ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) +
1225 sc->hpcmi_bufptr, l, buf) : 0;
1226 sc->hpcmi_bufptr += l;
1229 ACPI_SERIAL_END(hp);