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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 * Driver for extra ACPI-controlled features found on HP laptops
32 * that use a WMI enabled BIOS (e.g. HP Compaq 8510p and 6510p).
33 * Allows to control and read status of integrated hardware and read
34 * BIOS settings through CMI.
35 * Inspired by the hp-wmi driver, which implements a subset of these
36 * features (hotkeys) on Linux.
39 * http://h20331.www2.hp.com/Hpsub/downloads/cmi_whitepaper.pdf
41 * http://www.kernel.org
43 * http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx
47 #include <sys/param.h>
51 #include <sys/kernel.h>
54 #include <sys/module.h>
55 #include <sys/sysctl.h>
57 #include <contrib/dev/acpica/include/acpi.h>
58 #include <contrib/dev/acpica/include/accommon.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 cdevsw hpcmi_cdevsw = {
315 .d_version = D_VERSION,
316 .d_open = acpi_hp_hpcmi_open,
317 .d_close = acpi_hp_hpcmi_close,
318 .d_read = acpi_hp_hpcmi_read,
322 static device_method_t acpi_hp_methods[] = {
323 DEVMETHOD(device_identify, acpi_hp_identify),
324 DEVMETHOD(device_probe, acpi_hp_probe),
325 DEVMETHOD(device_attach, acpi_hp_attach),
326 DEVMETHOD(device_detach, acpi_hp_detach),
330 static driver_t acpi_hp_driver = {
333 sizeof(struct acpi_hp_softc),
336 static devclass_t acpi_hp_devclass;
338 DRIVER_MODULE(acpi_hp, acpi_wmi, acpi_hp_driver, acpi_hp_devclass,
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, 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;
473 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
475 sc = device_get_softc(dev);
479 sc->bluetooth_enable_if_radio_on = 0;
480 sc->bluetooth_disable_if_radio_off = 0;
481 sc->wlan_enable_if_radio_on = 0;
482 sc->wlan_disable_if_radio_off = 0;
483 sc->wlan_enable_if_radio_on = 0;
484 sc->wlan_disable_if_radio_off = 0;
485 sc->was_wlan_on_air = 0;
486 sc->was_bluetooth_on_air = 0;
487 sc->was_wwan_on_air = 0;
489 sc->cmi_order_size = -1;
491 memset(sc->cmi_order, 0, sizeof(sc->cmi_order));
493 sc->wmi_dev = device_get_parent(dev);
494 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
495 ACPI_HP_WMI_BIOS_GUID)) {
497 "WMI device does not provide the HP BIOS GUID\n");
500 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
501 ACPI_HP_WMI_EVENT_GUID)) {
503 "HP event GUID detected, installing event handler\n");
504 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev,
505 ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) {
507 "Could not install notification handler!\n");
514 ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID)
516 device_printf(dev, "HP CMI GUID detected\n");
520 sc->hpcmi_dev_t = make_dev(&hpcmi_cdevsw, 0, UID_ROOT,
521 GID_WHEEL, 0644, "hpcmi");
522 sc->hpcmi_dev_t->si_drv1 = sc;
523 sc->hpcmi_open_pid = 0;
524 sc->hpcmi_bufptr = -1;
527 ACPI_SERIAL_BEGIN(hp);
529 sc->sysctl_ctx = device_get_sysctl_ctx(dev);
530 sc->sysctl_tree = device_get_sysctl_tree(dev);
531 for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) {
533 if ((!sc->has_notify &&
534 (acpi_hp_sysctls[i].method ==
535 ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON ||
536 acpi_hp_sysctls[i].method ==
537 ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF ||
538 acpi_hp_sysctls[i].method ==
539 ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON ||
540 acpi_hp_sysctls[i].method ==
541 ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF ||
542 acpi_hp_sysctls[i].method ==
543 ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON ||
544 acpi_hp_sysctls[i].method ==
545 ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) ||
546 (arg = acpi_hp_sysctl_get(sc,
547 acpi_hp_sysctls[i].method)) < 0) {
550 if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) {
551 sc->was_wlan_on_air = arg;
553 else if (acpi_hp_sysctls[i].method ==
554 ACPI_HP_METHOD_BLUETOOTH_ON_AIR) {
555 sc->was_bluetooth_on_air = arg;
557 else if (acpi_hp_sysctls[i].method ==
558 ACPI_HP_METHOD_WWAN_ON_AIR) {
559 sc->was_wwan_on_air = arg;
562 SYSCTL_ADD_PROC(sc->sysctl_ctx,
563 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
564 acpi_hp_sysctls[i].name, acpi_hp_sysctls[i].access,
565 sc, i, acpi_hp_sysctl, "I",
566 acpi_hp_sysctls[i].description);
574 acpi_hp_detach(device_t dev)
576 struct acpi_hp_softc *sc;
578 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
579 sc = device_get_softc(dev);
580 if (sc->has_cmi && sc->hpcmi_open_pid != 0)
584 ACPI_WMI_REMOVE_EVENT_HANDLER(dev, ACPI_HP_WMI_EVENT_GUID);
587 if (sc->hpcmi_bufptr != -1) {
588 sbuf_delete(&sc->hpcmi_sbuf);
589 sc->hpcmi_bufptr = -1;
591 sc->hpcmi_open_pid = 0;
592 destroy_dev(sc->hpcmi_dev_t);
599 acpi_hp_sysctl(SYSCTL_HANDLER_ARGS)
601 struct acpi_hp_softc *sc;
608 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
610 sc = (struct acpi_hp_softc *)oidp->oid_arg1;
611 function = oidp->oid_arg2;
612 method = acpi_hp_sysctls[function].method;
614 ACPI_SERIAL_BEGIN(hp);
615 arg = acpi_hp_sysctl_get(sc, method);
617 error = sysctl_handle_int(oidp, &arg, 0, req);
618 if (!error && req->newptr != NULL) {
619 error = acpi_hp_sysctl_set(sc, method, arg, oldarg);
627 acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method)
631 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
632 ACPI_SERIAL_ASSERT(hp);
635 case ACPI_HP_METHOD_WLAN_ENABLED:
636 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
637 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
638 val = ((val & HP_MASK_WLAN_ENABLED) != 0);
640 case ACPI_HP_METHOD_WLAN_RADIO:
641 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
642 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
643 val = ((val & HP_MASK_WLAN_RADIO) != 0);
645 case ACPI_HP_METHOD_WLAN_ON_AIR:
646 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
647 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
648 val = ((val & HP_MASK_WLAN_ON_AIR) != 0);
650 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
651 val = sc->wlan_enable_if_radio_on;
653 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
654 val = sc->wlan_disable_if_radio_off;
656 case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
657 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
658 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
659 val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0);
661 case ACPI_HP_METHOD_BLUETOOTH_RADIO:
662 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
663 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
664 val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0);
666 case ACPI_HP_METHOD_BLUETOOTH_ON_AIR:
667 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
668 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
669 val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0);
671 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
672 val = sc->bluetooth_enable_if_radio_on;
674 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
675 val = sc->bluetooth_disable_if_radio_off;
677 case ACPI_HP_METHOD_WWAN_ENABLED:
678 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
679 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
680 val = ((val & HP_MASK_WWAN_ENABLED) != 0);
682 case ACPI_HP_METHOD_WWAN_RADIO:
683 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
684 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
685 val = ((val & HP_MASK_WWAN_RADIO) != 0);
687 case ACPI_HP_METHOD_WWAN_ON_AIR:
688 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
689 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
690 val = ((val & HP_MASK_WWAN_ON_AIR) != 0);
692 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
693 val = sc->wwan_enable_if_radio_on;
695 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
696 val = sc->wwan_disable_if_radio_off;
698 case ACPI_HP_METHOD_ALS:
699 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
700 ACPI_HP_WMI_ALS_COMMAND, 0, 0);
702 case ACPI_HP_METHOD_DISPLAY:
703 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
704 ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0);
706 case ACPI_HP_METHOD_HDDTEMP:
707 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
708 ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0);
710 case ACPI_HP_METHOD_DOCK:
711 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
712 ACPI_HP_WMI_DOCK_COMMAND, 0, 0);
714 case ACPI_HP_METHOD_CMI_DETAIL:
715 val = sc->cmi_detail;
717 case ACPI_HP_METHOD_VERBOSE:
726 acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg)
728 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
729 ACPI_SERIAL_ASSERT(hp);
731 if (method != ACPI_HP_METHOD_CMI_DETAIL &&
732 method != ACPI_HP_METHOD_VERBOSE)
737 case ACPI_HP_METHOD_WLAN_ENABLED:
738 return (acpi_hp_exec_wmi_command(sc->wmi_dev,
739 ACPI_HP_WMI_WIRELESS_COMMAND, 1,
741 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
742 sc->wlan_enable_if_radio_on = arg;
743 acpi_hp_evaluate_auto_on_off(sc);
745 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
746 sc->wlan_disable_if_radio_off = arg;
747 acpi_hp_evaluate_auto_on_off(sc);
749 case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
750 return (acpi_hp_exec_wmi_command(sc->wmi_dev,
751 ACPI_HP_WMI_WIRELESS_COMMAND, 1,
753 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
754 sc->bluetooth_enable_if_radio_on = arg;
755 acpi_hp_evaluate_auto_on_off(sc);
757 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
758 sc->bluetooth_disable_if_radio_off = arg?1:0;
759 acpi_hp_evaluate_auto_on_off(sc);
761 case ACPI_HP_METHOD_WWAN_ENABLED:
762 return (acpi_hp_exec_wmi_command(sc->wmi_dev,
763 ACPI_HP_WMI_WIRELESS_COMMAND, 1,
765 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
766 sc->wwan_enable_if_radio_on = arg?1:0;
767 acpi_hp_evaluate_auto_on_off(sc);
769 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
770 sc->wwan_disable_if_radio_off = arg?1:0;
771 acpi_hp_evaluate_auto_on_off(sc);
773 case ACPI_HP_METHOD_ALS:
774 return (acpi_hp_exec_wmi_command(sc->wmi_dev,
775 ACPI_HP_WMI_ALS_COMMAND, 1,
777 case ACPI_HP_METHOD_CMI_DETAIL:
778 sc->cmi_detail = arg;
779 if ((arg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) !=
780 (oldarg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE)) {
781 sc->cmi_order_size = -1;
784 case ACPI_HP_METHOD_VERBOSE:
794 acpi_hp_free_buffer(ACPI_BUFFER* buf) {
795 if (buf && buf->Pointer) {
796 AcpiOsFree(buf->Pointer);
801 acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context)
803 device_t dev = context;
804 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
806 struct acpi_hp_softc *sc = device_get_softc(dev);
807 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL };
809 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response);
810 obj = (ACPI_OBJECT*) response.Pointer;
811 if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) {
812 if (*((UINT8 *) obj->Buffer.Pointer) == 0x5) {
813 acpi_hp_evaluate_auto_on_off(sc);
816 acpi_hp_free_buffer(&response);
820 acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, int val)
822 UINT32 params[5] = { 0x55434553,
829 ACPI_BUFFER in = { sizeof(params), ¶ms };
830 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
833 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID,
834 0, 0x3, &in, &out))) {
835 acpi_hp_free_buffer(&out);
839 if (!obj || obj->Type != ACPI_TYPE_BUFFER) {
840 acpi_hp_free_buffer(&out);
843 result = (UINT32*) obj->Buffer.Pointer;
848 acpi_hp_free_buffer(&out);
853 static __inline char*
854 acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) {
858 if (obj->Type == ACPI_TYPE_STRING) {
859 length = obj->String.Length+1;
863 strlcpy(dst, obj->String.Pointer, length);
864 acpi_hp_hex_decode(dst);
872 * Read BIOS Setting block in instance "instance".
873 * The block returned is ACPI_TYPE_PACKAGE which should contain the following
876 * 0 Setting Name [string]
877 * 1 Value (comma separated, asterisk marks the current value) [string]
878 * 2 Path within the bios hierarchy [string]
880 * 4 DisplayInUI [int]
881 * 5 RequiresPhysicalPresence [int]
882 * 6 Sequence for ordering within the bios settings (absolute) [int]
883 * 7 Length of prerequisites array [int]
884 * 8..8+[7] PrerequisiteN [string]
885 * 9+[7] Current value (in case of enum) [string] / Array length [int]
886 * 10+[7] Enum length [int] / Array values
887 * 11+[7]ff Enum value at index x [string]
890 acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance,
891 char* outbuf, size_t outsize, UINT32* sequence, int detail)
894 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
900 char string_buffer[size];
905 if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) {
906 acpi_hp_free_buffer(&out);
910 if (!obj || obj->Type != ACPI_TYPE_PACKAGE) {
911 acpi_hp_free_buffer(&out);
915 if (obj->Package.Count >= 8 &&
916 obj->Package.Elements[7].Type == ACPI_TYPE_INTEGER) {
917 valuebase = 8 + obj->Package.Elements[7].Integer.Value;
920 /* check if this matches our expectations based on limited knowledge */
921 if (valuebase > 7 && obj->Package.Count > valuebase + 1 &&
922 obj->Package.Elements[0].Type == ACPI_TYPE_STRING &&
923 obj->Package.Elements[1].Type == ACPI_TYPE_STRING &&
924 obj->Package.Elements[2].Type == ACPI_TYPE_STRING &&
925 obj->Package.Elements[3].Type == ACPI_TYPE_INTEGER &&
926 obj->Package.Elements[4].Type == ACPI_TYPE_INTEGER &&
927 obj->Package.Elements[5].Type == ACPI_TYPE_INTEGER &&
928 obj->Package.Elements[6].Type == ACPI_TYPE_INTEGER &&
929 obj->Package.Elements[valuebase].Type == ACPI_TYPE_STRING &&
930 obj->Package.Elements[valuebase+1].Type == ACPI_TYPE_INTEGER &&
931 obj->Package.Count > valuebase +
932 obj->Package.Elements[valuebase+1].Integer.Value
934 enumbase = valuebase + 1;
935 if (detail & ACPI_HP_CMI_DETAIL_PATHS) {
936 strlcat(outbuf, acpi_hp_get_string_from_object(
937 &obj->Package.Elements[2], string_buffer, size),
940 while (strlen(outbuf) < outlen)
941 strlcat(outbuf, " ", outsize);
943 strlcat(outbuf, acpi_hp_get_string_from_object(
944 &obj->Package.Elements[0], string_buffer, size),
947 while (strlen(outbuf) < outlen)
948 strlcat(outbuf, " ", outsize);
949 strlcat(outbuf, acpi_hp_get_string_from_object(
950 &obj->Package.Elements[valuebase], string_buffer,
954 while (strlen(outbuf) < outlen)
955 strlcat(outbuf, " ", outsize);
956 for (i = 0; i < strlen(outbuf); ++i)
957 if (outbuf[i] == '\\')
959 if (detail & ACPI_HP_CMI_DETAIL_ENUMS) {
960 for (i = enumbase + 1; i < enumbase + 1 +
961 obj->Package.Elements[enumbase].Integer.Value;
963 acpi_hp_get_string_from_object(
964 &obj->Package.Elements[i], string_buffer,
966 if (strlen(string_buffer) > 1 ||
967 (strlen(string_buffer) == 1 &&
968 string_buffer[0] != ' ')) {
970 strlcat(outbuf, "/", outsize);
972 strlcat(outbuf, " (", outsize);
973 strlcat(outbuf, string_buffer, outsize);
979 strlcat(outbuf, ")", outsize);
980 if (detail & ACPI_HP_CMI_DETAIL_FLAGS) {
981 strlcat(outbuf, obj->Package.Elements[3].Integer.Value?
982 " [ReadOnly]":"", outsize);
983 strlcat(outbuf, obj->Package.Elements[4].Integer.Value?
984 "":" [NOUI]", outsize);
985 strlcat(outbuf, obj->Package.Elements[5].Integer.Value?
986 " [RPP]":"", outsize);
988 *sequence = (UINT32) obj->Package.Elements[6].Integer.Value;
990 acpi_hp_free_buffer(&out);
998 * Convert given two digit hex string (hexin) to an UINT8 referenced
1000 * Return != 0 if the was a problem (invalid input)
1002 static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout)
1009 if ('0' <= hi && hi <= '9')
1011 else if ('A' <= hi && hi <= 'F')
1013 else if ('a' <= hi && hi <= 'f')
1017 if ('0' <= lo && lo <= '9')
1019 else if ('A' <= lo && lo <= 'F')
1021 else if ('a' <= lo && lo <= 'f')
1025 *byteout = (hi << 4) + lo;
1032 acpi_hp_hex_decode(char* buffer)
1035 int length = strlen(buffer);
1039 if (((int)length/2)*2 == length || length < 10) return;
1041 for (i = 0; i<length; ++i) {
1043 if (buffer[i] != ' ')
1047 if (!((buffer[i] >= '0' && buffer[i] <= '9') ||
1048 (buffer[i] >= 'A' && buffer[i] <= 'F')))
1052 for (i = 0; i<length; i += 3) {
1055 acpi_hp_hex_to_int(uin, &uout);
1056 buffer[i/3] = (char) uout;
1058 buffer[(length+1)/3] = 0;
1066 acpi_hp_hpcmi_open(struct cdev* dev, int flags, int mode, struct thread *td)
1068 struct acpi_hp_softc *sc;
1071 if (dev == NULL || dev->si_drv1 == NULL)
1075 ACPI_SERIAL_BEGIN(hp);
1076 if (sc->hpcmi_open_pid != 0) {
1080 if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND)
1084 sc->hpcmi_open_pid = td->td_proc->p_pid;
1085 sc->hpcmi_bufptr = 0;
1089 ACPI_SERIAL_END(hp);
1095 * close hpcmi device
1098 acpi_hp_hpcmi_close(struct cdev* dev, int flags, int mode, struct thread *td)
1100 struct acpi_hp_softc *sc;
1103 if (dev == NULL || dev->si_drv1 == NULL)
1107 ACPI_SERIAL_BEGIN(hp);
1108 if (sc->hpcmi_open_pid == 0) {
1112 if (sc->hpcmi_bufptr != -1) {
1113 sbuf_delete(&sc->hpcmi_sbuf);
1114 sc->hpcmi_bufptr = -1;
1116 sc->hpcmi_open_pid = 0;
1119 ACPI_SERIAL_END(hp);
1125 * Read from hpcmi bios information
1128 acpi_hp_hpcmi_read(struct cdev *dev, struct uio *buf, int flag)
1130 struct acpi_hp_softc *sc;
1135 int linesize = 1025;
1136 char line[linesize];
1138 if (dev == NULL || dev->si_drv1 == NULL)
1142 ACPI_SERIAL_BEGIN(hp);
1143 if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid
1144 || sc->hpcmi_bufptr == -1) {
1148 if (!sbuf_done(&sc->hpcmi_sbuf)) {
1149 if (sc->cmi_order_size < 0) {
1150 maxInstance = sc->has_cmi;
1151 if (!(sc->cmi_detail &
1152 ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) &&
1156 sc->cmi_order_size = 0;
1157 for (instance = 0; instance < maxInstance;
1159 if (acpi_hp_get_cmi_block(sc->wmi_dev,
1160 ACPI_HP_WMI_CMI_GUID, instance,
1161 line, linesize, &sequence,
1163 instance = maxInstance;
1166 pos = sc->cmi_order_size;
1168 i<sc->cmi_order_size && i<127;
1170 if (sc->cmi_order[i].sequence > sequence) {
1175 for (i=sc->cmi_order_size;
1178 sc->cmi_order[i].sequence =
1179 sc->cmi_order[i-1].sequence;
1180 sc->cmi_order[i].instance =
1181 sc->cmi_order[i-1].instance;
1183 sc->cmi_order[pos].sequence =
1185 sc->cmi_order[pos].instance =
1187 sc->cmi_order_size++;
1191 for (i=0; i<sc->cmi_order_size; ++i) {
1192 if (!acpi_hp_get_cmi_block(sc->wmi_dev,
1193 ACPI_HP_WMI_CMI_GUID,
1194 sc->cmi_order[i].instance, line, linesize,
1195 &sequence, sc->cmi_detail)) {
1196 sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line);
1199 sbuf_finish(&sc->hpcmi_sbuf);
1201 if (sbuf_len(&sc->hpcmi_sbuf) <= 0) {
1202 sbuf_delete(&sc->hpcmi_sbuf);
1203 sc->hpcmi_bufptr = -1;
1204 sc->hpcmi_open_pid = 0;
1207 l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) -
1209 ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) +
1210 sc->hpcmi_bufptr, l, buf) : 0;
1211 sc->hpcmi_bufptr += l;
1214 ACPI_SERIAL_END(hp);