1 /*-
2 * Copyright (c) 2009 Michael Gmelin <freebsd@grem.de>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
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
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 /*
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.
37 *
38 * HP CMI whitepaper:
39 * http://h20331.www2.hp.com/Hpsub/downloads/cmi_whitepaper.pdf
40 * wmi-hp for Linux:
41 * http://www.kernel.org
42 * WMI and ACPI:
43 * http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx
44 */
45
46 #include "opt_acpi.h"
47 #include <sys/param.h>
48 #include <sys/conf.h>
49 #include <sys/uio.h>
50 #include <sys/proc.h>
51 #include <sys/kernel.h>
52 #include <sys/bus.h>
53 #include <sys/sbuf.h>
54 #include <sys/module.h>
55 #include <sys/sysctl.h>
56
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"
61
62 #define _COMPONENT ACPI_OEM
63 ACPI_MODULE_NAME("HP")
64
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"
68
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
74 #define ACPI_HP_WMI_BIOS_COMMAND 0x9
75 #define ACPI_HP_WMI_FEATURE_COMMAND 0xb
76 #define ACPI_HP_WMI_HOTKEY_COMMAND 0xc
77 #define ACPI_HP_WMI_FEATURE2_COMMAND 0xd
78 #define ACPI_HP_WMI_WIRELESS2_COMMAND 0x1b
79 #define ACPI_HP_WMI_POSTCODEERROR_COMMAND 0x2a
80
81 #define ACPI_HP_METHOD_WLAN_ENABLED 1
82 #define ACPI_HP_METHOD_WLAN_RADIO 2
83 #define ACPI_HP_METHOD_WLAN_ON_AIR 3
84 #define ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON 4
85 #define ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF 5
86 #define ACPI_HP_METHOD_BLUETOOTH_ENABLED 6
87 #define ACPI_HP_METHOD_BLUETOOTH_RADIO 7
88 #define ACPI_HP_METHOD_BLUETOOTH_ON_AIR 8
89 #define ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON 9
90 #define ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF 10
91 #define ACPI_HP_METHOD_WWAN_ENABLED 11
92 #define ACPI_HP_METHOD_WWAN_RADIO 12
93 #define ACPI_HP_METHOD_WWAN_ON_AIR 13
94 #define ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON 14
95 #define ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF 15
96 #define ACPI_HP_METHOD_ALS 16
97 #define ACPI_HP_METHOD_DISPLAY 17
98 #define ACPI_HP_METHOD_HDDTEMP 18
99 #define ACPI_HP_METHOD_DOCK 19
100 #define ACPI_HP_METHOD_CMI_DETAIL 20
101 #define ACPI_HP_METHOD_VERBOSE 21
102
103 #define HP_MASK_WWAN_ON_AIR 0x1000000
104 #define HP_MASK_BLUETOOTH_ON_AIR 0x10000
105 #define HP_MASK_WLAN_ON_AIR 0x100
106 #define HP_MASK_WWAN_RADIO 0x8000000
107 #define HP_MASK_BLUETOOTH_RADIO 0x80000
108 #define HP_MASK_WLAN_RADIO 0x800
109 #define HP_MASK_WWAN_ENABLED 0x2000000
110 #define HP_MASK_BLUETOOTH_ENABLED 0x20000
111 #define HP_MASK_WLAN_ENABLED 0x200
112
113 #define ACPI_HP_EVENT_DOCK 0x01
114 #define ACPI_HP_EVENT_PARK_HDD 0x02
115 #define ACPI_HP_EVENT_SMART_ADAPTER 0x03
116 #define ACPI_HP_EVENT_BEZEL_BUTTON 0x04
117 #define ACPI_HP_EVENT_WIRELESS 0x05
118 #define ACPI_HP_EVENT_CPU_BATTERY_THROTTLE 0x06
119 #define ACPI_HP_EVENT_LOCK_SWITCH 0x07
120 #define ACPI_HP_EVENT_LID_SWITCH 0x08
121 #define ACPI_HP_EVENT_SCREEN_ROTATION 0x09
122 #define ACPI_HP_EVENT_COOLSENSE_SYSTEM_MOBILE 0x0A
123 #define ACPI_HP_EVENT_COOLSENSE_SYSTEM_HOT 0x0B
124 #define ACPI_HP_EVENT_PROXIMITY_SENSOR 0x0C
125 #define ACPI_HP_EVENT_BACKLIT_KB_BRIGHTNESS 0x0D
126 #define ACPI_HP_EVENT_PEAKSHIFT_PERIOD 0x0F
127 #define ACPI_HP_EVENT_BATTERY_CHARGE_PERIOD 0x10
128
129 #define ACPI_HP_CMI_DETAIL_PATHS 0x01
130 #define ACPI_HP_CMI_DETAIL_ENUMS 0x02
131 #define ACPI_HP_CMI_DETAIL_FLAGS 0x04
132 #define ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE 0x08
133
134 #define ACPI_HP_WMI_RET_WRONG_SIGNATURE 0x02
135 #define ACPI_HP_WMI_RET_UNKNOWN_COMMAND 0x03
136 #define ACPI_HP_WMI_RET_UNKNOWN_CMDTYPE 0x04
137 #define ACPI_HP_WMI_RET_INVALID_PARAMETERS 0x05
138
139 struct acpi_hp_inst_seq_pair {
140 UINT32 sequence; /* sequence number as suggested by cmi bios */
141 UINT8 instance; /* object instance on guid */
142 };
143
144 struct acpi_hp_softc {
145 device_t dev;
146 device_t wmi_dev;
147 int has_notify; /* notification GUID found */
148 int has_cmi; /* CMI GUID found */
149 int has_wireless; /* Wireless command found */
150 int cmi_detail; /* CMI detail level
151 (set by sysctl) */
152 int verbose; /* add debug output */
153 int wlan_enable_if_radio_on; /* set by sysctl */
154 int wlan_disable_if_radio_off; /* set by sysctl */
155 int bluetooth_enable_if_radio_on; /* set by sysctl */
156 int bluetooth_disable_if_radio_off; /* set by sysctl */
157 int wwan_enable_if_radio_on; /* set by sysctl */
158 int wwan_disable_if_radio_off; /* set by sysctl */
159 int was_wlan_on_air; /* last known WLAN
160 on air status */
161 int was_bluetooth_on_air; /* last known BT
162 on air status */
163 int was_wwan_on_air; /* last known WWAN
164 on air status */
165 struct sysctl_ctx_list *sysctl_ctx;
166 struct sysctl_oid *sysctl_tree;
167 struct cdev *hpcmi_dev_t; /* hpcmi device handle */
168 struct sbuf hpcmi_sbuf; /* /dev/hpcmi output sbuf */
169 pid_t hpcmi_open_pid; /* pid operating on
170 /dev/hpcmi */
171 int hpcmi_bufptr; /* current pointer position
172 in /dev/hpcmi output buffer
173 */
174 int cmi_order_size; /* size of cmi_order list */
175 struct acpi_hp_inst_seq_pair cmi_order[128]; /* list of CMI
176 instances ordered by BIOS suggested sequence */
177 };
178
179 static struct {
180 char *name;
181 int method;
182 char *description;
183 int flag_rdonly;
184 } acpi_hp_sysctls[] = {
185 {
186 .name = "wlan_enabled",
187 .method = ACPI_HP_METHOD_WLAN_ENABLED,
188 .description = "Enable/Disable WLAN (WiFi)",
189 },
190 {
191 .name = "wlan_radio",
192 .method = ACPI_HP_METHOD_WLAN_RADIO,
193 .description = "WLAN radio status",
194 .flag_rdonly = 1
195 },
196 {
197 .name = "wlan_on_air",
198 .method = ACPI_HP_METHOD_WLAN_ON_AIR,
199 .description = "WLAN radio ready to use (enabled and radio)",
200 .flag_rdonly = 1
201 },
202 {
203 .name = "wlan_enable_if_radio_on",
204 .method = ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON,
205 .description = "Enable WLAN if radio is turned on",
206 },
207 {
208 .name = "wlan_disable_if_radio_off",
209 .method = ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF,
210 .description = "Disable WLAN if radio is turned off",
211 },
212 {
213 .name = "bt_enabled",
214 .method = ACPI_HP_METHOD_BLUETOOTH_ENABLED,
215 .description = "Enable/Disable Bluetooth",
216 },
217 {
218 .name = "bt_radio",
219 .method = ACPI_HP_METHOD_BLUETOOTH_RADIO,
220 .description = "Bluetooth radio status",
221 .flag_rdonly = 1
222 },
223 {
224 .name = "bt_on_air",
225 .method = ACPI_HP_METHOD_BLUETOOTH_ON_AIR,
226 .description = "Bluetooth radio ready to use"
227 " (enabled and radio)",
228 .flag_rdonly = 1
229 },
230 {
231 .name = "bt_enable_if_radio_on",
232 .method = ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON,
233 .description = "Enable bluetooth if radio is turned on",
234 },
235 {
236 .name = "bt_disable_if_radio_off",
237 .method = ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF,
238 .description = "Disable bluetooth if radio is turned off",
239 },
240 {
241 .name = "wwan_enabled",
242 .method = ACPI_HP_METHOD_WWAN_ENABLED,
243 .description = "Enable/Disable WWAN (UMTS)",
244 },
245 {
246 .name = "wwan_radio",
247 .method = ACPI_HP_METHOD_WWAN_RADIO,
248 .description = "WWAN radio status",
249 .flag_rdonly = 1
250 },
251 {
252 .name = "wwan_on_air",
253 .method = ACPI_HP_METHOD_WWAN_ON_AIR,
254 .description = "WWAN radio ready to use (enabled and radio)",
255 .flag_rdonly = 1
256 },
257 {
258 .name = "wwan_enable_if_radio_on",
259 .method = ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON,
260 .description = "Enable WWAN if radio is turned on",
261 },
262 {
263 .name = "wwan_disable_if_radio_off",
264 .method = ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF,
265 .description = "Disable WWAN if radio is turned off",
266 },
267 {
268 .name = "als_enabled",
269 .method = ACPI_HP_METHOD_ALS,
270 .description = "Enable/Disable ALS (Ambient light sensor)",
271 },
272 {
273 .name = "display",
274 .method = ACPI_HP_METHOD_DISPLAY,
275 .description = "Display status",
276 .flag_rdonly = 1
277 },
278 {
279 .name = "hdd_temperature",
280 .method = ACPI_HP_METHOD_HDDTEMP,
281 .description = "HDD temperature",
282 .flag_rdonly = 1
283 },
284 {
285 .name = "is_docked",
286 .method = ACPI_HP_METHOD_DOCK,
287 .description = "Docking station status",
288 .flag_rdonly = 1
289 },
290 {
291 .name = "cmi_detail",
292 .method = ACPI_HP_METHOD_CMI_DETAIL,
293 .description = "Details shown in CMI output "
294 "(cat /dev/hpcmi)",
295 },
296 {
297 .name = "verbose",
298 .method = ACPI_HP_METHOD_VERBOSE,
299 .description = "Verbosity level",
300 },
301 { NULL, 0, NULL, 0 }
302 };
303
304 ACPI_SERIAL_DECL(hp, "HP ACPI-WMI Mapping");
305
306 static void acpi_hp_identify(driver_t *driver, device_t parent);
307 static int acpi_hp_probe(device_t dev);
308 static int acpi_hp_attach(device_t dev);
309 static int acpi_hp_detach(device_t dev);
310
311 static void acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc* sc);
312 static int acpi_hp_sysctl(SYSCTL_HANDLER_ARGS);
313 static int acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method,
314 int arg, int oldarg);
315 static int acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method);
316 static int acpi_hp_exec_wmi_command(device_t wmi_dev, int command,
317 int is_write, int val, int *retval);
318 static void acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context);
319 static int acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid,
320 UINT8 instance, char* outbuf, size_t outsize,
321 UINT32* sequence, int detail);
322 static void acpi_hp_hex_decode(char* buffer);
323
324 static d_open_t acpi_hp_hpcmi_open;
325 static d_close_t acpi_hp_hpcmi_close;
326 static d_read_t acpi_hp_hpcmi_read;
327
328 /* handler /dev/hpcmi device */
329 static struct cdevsw hpcmi_cdevsw = {
330 .d_version = D_VERSION,
331 .d_open = acpi_hp_hpcmi_open,
332 .d_close = acpi_hp_hpcmi_close,
333 .d_read = acpi_hp_hpcmi_read,
334 .d_name = "hpcmi",
335 };
336
337 static device_method_t acpi_hp_methods[] = {
338 DEVMETHOD(device_identify, acpi_hp_identify),
339 DEVMETHOD(device_probe, acpi_hp_probe),
340 DEVMETHOD(device_attach, acpi_hp_attach),
341 DEVMETHOD(device_detach, acpi_hp_detach),
342
343 DEVMETHOD_END
344 };
345
346 static driver_t acpi_hp_driver = {
347 "acpi_hp",
348 acpi_hp_methods,
349 sizeof(struct acpi_hp_softc),
350 };
351
352 DRIVER_MODULE(acpi_hp, acpi_wmi, acpi_hp_driver, 0, 0);
353 MODULE_DEPEND(acpi_hp, acpi_wmi, 1, 1, 1);
354 MODULE_DEPEND(acpi_hp, acpi, 1, 1, 1);
355
356 static void
357 acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc *sc)
358 {
359 int res;
360 int wireless;
361 int new_wlan_status;
362 int new_bluetooth_status;
363 int new_wwan_status;
364
365 res = acpi_hp_exec_wmi_command(sc->wmi_dev,
366 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &wireless);
367 if (res != 0) {
368 device_printf(sc->wmi_dev, "Wireless command error %x\n", res);
369 return;
370 }
371 new_wlan_status = -1;
372 new_bluetooth_status = -1;
373 new_wwan_status = -1;
374
375 if (sc->verbose)
376 device_printf(sc->wmi_dev, "Wireless status is %x\n", wireless);
377 if (sc->wlan_disable_if_radio_off && !(wireless & HP_MASK_WLAN_RADIO)
378 && (wireless & HP_MASK_WLAN_ENABLED)) {
379 acpi_hp_exec_wmi_command(sc->wmi_dev,
380 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x100, NULL);
381 new_wlan_status = 0;
382 }
383 else if (sc->wlan_enable_if_radio_on && (wireless & HP_MASK_WLAN_RADIO)
384 && !(wireless & HP_MASK_WLAN_ENABLED)) {
385 acpi_hp_exec_wmi_command(sc->wmi_dev,
386 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x101, NULL);
387 new_wlan_status = 1;
388 }
389 if (sc->bluetooth_disable_if_radio_off &&
390 !(wireless & HP_MASK_BLUETOOTH_RADIO) &&
391 (wireless & HP_MASK_BLUETOOTH_ENABLED)) {
392 acpi_hp_exec_wmi_command(sc->wmi_dev,
393 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x200, NULL);
394 new_bluetooth_status = 0;
395 }
396 else if (sc->bluetooth_enable_if_radio_on &&
397 (wireless & HP_MASK_BLUETOOTH_RADIO) &&
398 !(wireless & HP_MASK_BLUETOOTH_ENABLED)) {
399 acpi_hp_exec_wmi_command(sc->wmi_dev,
400 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x202, NULL);
401 new_bluetooth_status = 1;
402 }
403 if (sc->wwan_disable_if_radio_off &&
404 !(wireless & HP_MASK_WWAN_RADIO) &&
405 (wireless & HP_MASK_WWAN_ENABLED)) {
406 acpi_hp_exec_wmi_command(sc->wmi_dev,
407 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x400, NULL);
408 new_wwan_status = 0;
409 }
410 else if (sc->wwan_enable_if_radio_on &&
411 (wireless & HP_MASK_WWAN_RADIO) &&
412 !(wireless & HP_MASK_WWAN_ENABLED)) {
413 acpi_hp_exec_wmi_command(sc->wmi_dev,
414 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x404, NULL);
415 new_wwan_status = 1;
416 }
417
418 if (new_wlan_status == -1) {
419 new_wlan_status = (wireless & HP_MASK_WLAN_ON_AIR);
420 if ((new_wlan_status?1:0) != sc->was_wlan_on_air) {
421 sc->was_wlan_on_air = sc->was_wlan_on_air?0:1;
422 if (sc->verbose)
423 device_printf(sc->wmi_dev,
424 "WLAN on air changed to %i "
425 "(new_wlan_status is %i)\n",
426 sc->was_wlan_on_air, new_wlan_status);
427 acpi_UserNotify("HP", ACPI_ROOT_OBJECT,
428 0xc0+sc->was_wlan_on_air);
429 }
430 }
431 if (new_bluetooth_status == -1) {
432 new_bluetooth_status = (wireless & HP_MASK_BLUETOOTH_ON_AIR);
433 if ((new_bluetooth_status?1:0) != sc->was_bluetooth_on_air) {
434 sc->was_bluetooth_on_air = sc->was_bluetooth_on_air?
435 0:1;
436 if (sc->verbose)
437 device_printf(sc->wmi_dev,
438 "BLUETOOTH on air changed"
439 " to %i (new_bluetooth_status is %i)\n",
440 sc->was_bluetooth_on_air,
441 new_bluetooth_status);
442 acpi_UserNotify("HP", ACPI_ROOT_OBJECT,
443 0xd0+sc->was_bluetooth_on_air);
444 }
445 }
446 if (new_wwan_status == -1) {
447 new_wwan_status = (wireless & HP_MASK_WWAN_ON_AIR);
448 if ((new_wwan_status?1:0) != sc->was_wwan_on_air) {
449 sc->was_wwan_on_air = sc->was_wwan_on_air?0:1;
450 if (sc->verbose)
451 device_printf(sc->wmi_dev,
452 "WWAN on air changed to %i"
453 " (new_wwan_status is %i)\n",
454 sc->was_wwan_on_air, new_wwan_status);
455 acpi_UserNotify("HP", ACPI_ROOT_OBJECT,
456 0xe0+sc->was_wwan_on_air);
457 }
458 }
459 }
460
461 static void
462 acpi_hp_identify(driver_t *driver, device_t parent)
463 {
464
465 /* Don't do anything if driver is disabled. */
466 if (acpi_disabled("hp"))
467 return;
468
469 /* Add only a single device instance. */
470 if (device_find_child(parent, "acpi_hp", -1) != NULL)
471 return;
472
473 /* Check BIOS GUID to see whether system is compatible. */
474 if (!ACPI_WMI_PROVIDES_GUID_STRING(parent,
475 ACPI_HP_WMI_BIOS_GUID))
476 return;
477
478 if (BUS_ADD_CHILD(parent, 0, "acpi_hp", -1) == NULL)
479 device_printf(parent, "add acpi_hp child failed\n");
480 }
481
482 static int
483 acpi_hp_probe(device_t dev)
484 {
485
486 device_set_desc(dev, "HP ACPI-WMI Mapping");
487 return (0);
488 }
489
490 static int
491 acpi_hp_attach(device_t dev)
492 {
493 struct acpi_hp_softc *sc;
494 int arg;
495
496 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
497
498 sc = device_get_softc(dev);
499 sc->dev = dev;
500 sc->has_notify = 0;
501 sc->has_cmi = 0;
502 sc->bluetooth_enable_if_radio_on = 0;
503 sc->bluetooth_disable_if_radio_off = 0;
504 sc->wlan_enable_if_radio_on = 0;
505 sc->wlan_disable_if_radio_off = 0;
506 sc->wlan_enable_if_radio_on = 0;
507 sc->wlan_disable_if_radio_off = 0;
508 sc->was_wlan_on_air = 0;
509 sc->was_bluetooth_on_air = 0;
510 sc->was_wwan_on_air = 0;
511 sc->cmi_detail = 0;
512 sc->cmi_order_size = -1;
513 sc->verbose = bootverbose;
514 memset(sc->cmi_order, 0, sizeof(sc->cmi_order));
515
516 sc->wmi_dev = device_get_parent(dev);
517 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
518 ACPI_HP_WMI_BIOS_GUID)) {
519 device_printf(dev,
520 "WMI device does not provide the HP BIOS GUID\n");
521 return (EINVAL);
522 }
523 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
524 ACPI_HP_WMI_EVENT_GUID)) {
525 device_printf(dev,
526 "HP event GUID detected, installing event handler\n");
527 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev,
528 ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) {
529 device_printf(dev,
530 "Could not install notification handler!\n");
531 }
532 else {
533 sc->has_notify = 1;
534 }
535 }
536 if ((sc->has_cmi =
537 ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID)
538 )) {
539 device_printf(dev, "HP CMI GUID detected\n");
540 }
541
542 if (sc->has_cmi) {
543 sc->hpcmi_dev_t = make_dev(&hpcmi_cdevsw, 0, UID_ROOT,
544 GID_WHEEL, 0644, "hpcmi");
545 sc->hpcmi_dev_t->si_drv1 = sc;
546 sc->hpcmi_open_pid = 0;
547 sc->hpcmi_bufptr = -1;
548 }
549
550 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
551 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, NULL) == 0)
552 sc->has_wireless = 1;
553
554 ACPI_SERIAL_BEGIN(hp);
555
556 sc->sysctl_ctx = device_get_sysctl_ctx(dev);
557 sc->sysctl_tree = device_get_sysctl_tree(dev);
558 for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) {
559 arg = 0;
560 if (((!sc->has_notify || !sc->has_wireless) &&
561 (acpi_hp_sysctls[i].method ==
562 ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON ||
563 acpi_hp_sysctls[i].method ==
564 ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF ||
565 acpi_hp_sysctls[i].method ==
566 ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON ||
567 acpi_hp_sysctls[i].method ==
568 ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF ||
569 acpi_hp_sysctls[i].method ==
570 ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON ||
571 acpi_hp_sysctls[i].method ==
572 ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) ||
573 (arg = acpi_hp_sysctl_get(sc,
574 acpi_hp_sysctls[i].method)) < 0) {
575 continue;
576 }
577 if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) {
578 sc->was_wlan_on_air = arg;
579 }
580 else if (acpi_hp_sysctls[i].method ==
581 ACPI_HP_METHOD_BLUETOOTH_ON_AIR) {
582 sc->was_bluetooth_on_air = arg;
583 }
584 else if (acpi_hp_sysctls[i].method ==
585 ACPI_HP_METHOD_WWAN_ON_AIR) {
586 sc->was_wwan_on_air = arg;
587 }
588
589 if (acpi_hp_sysctls[i].flag_rdonly != 0) {
590 SYSCTL_ADD_PROC(sc->sysctl_ctx,
591 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
592 acpi_hp_sysctls[i].name,
593 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
594 sc, i, acpi_hp_sysctl, "I",
595 acpi_hp_sysctls[i].description);
596 } else {
597 SYSCTL_ADD_PROC(sc->sysctl_ctx,
598 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
599 acpi_hp_sysctls[i].name,
600 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
601 sc, i, acpi_hp_sysctl, "I",
602 acpi_hp_sysctls[i].description);
603 }
604 }
605 ACPI_SERIAL_END(hp);
606
607 return (0);
608 }
609
610 static int
611 acpi_hp_detach(device_t dev)
612 {
613 struct acpi_hp_softc *sc;
614
615 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
616 sc = device_get_softc(dev);
617 if (sc->has_cmi && sc->hpcmi_open_pid != 0)
618 return (EBUSY);
619
620 if (sc->has_notify) {
621 ACPI_WMI_REMOVE_EVENT_HANDLER(sc->wmi_dev,
622 ACPI_HP_WMI_EVENT_GUID);
623 }
624
625 if (sc->has_cmi) {
626 if (sc->hpcmi_bufptr != -1) {
627 sbuf_delete(&sc->hpcmi_sbuf);
628 sc->hpcmi_bufptr = -1;
629 }
630 sc->hpcmi_open_pid = 0;
631 destroy_dev(sc->hpcmi_dev_t);
632 }
633
634 return (0);
635 }
636
637 static int
638 acpi_hp_sysctl(SYSCTL_HANDLER_ARGS)
639 {
640 struct acpi_hp_softc *sc;
641 int arg;
642 int oldarg;
643 int error = 0;
644 int function;
645 int method;
646
647 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
648
649 sc = (struct acpi_hp_softc *)oidp->oid_arg1;
650 function = oidp->oid_arg2;
651 method = acpi_hp_sysctls[function].method;
652
653 ACPI_SERIAL_BEGIN(hp);
654 arg = acpi_hp_sysctl_get(sc, method);
655 oldarg = arg;
656 error = sysctl_handle_int(oidp, &arg, 0, req);
657 if (!error && req->newptr != NULL) {
658 error = acpi_hp_sysctl_set(sc, method, arg, oldarg);
659 }
660 ACPI_SERIAL_END(hp);
661
662 return (error);
663 }
664
665 static int
666 acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method)
667 {
668 int val = 0;
669
670 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
671 ACPI_SERIAL_ASSERT(hp);
672
673 switch (method) {
674 case ACPI_HP_METHOD_WLAN_ENABLED:
675 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
676 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val))
677 return (-EINVAL);
678 val = ((val & HP_MASK_WLAN_ENABLED) != 0);
679 break;
680 case ACPI_HP_METHOD_WLAN_RADIO:
681 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
682 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val))
683 return (-EINVAL);
684 val = ((val & HP_MASK_WLAN_RADIO) != 0);
685 break;
686 case ACPI_HP_METHOD_WLAN_ON_AIR:
687 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
688 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val))
689 return (-EINVAL);
690 val = ((val & HP_MASK_WLAN_ON_AIR) != 0);
691 break;
692 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
693 val = sc->wlan_enable_if_radio_on;
694 break;
695 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
696 val = sc->wlan_disable_if_radio_off;
697 break;
698 case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
699 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
700 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val))
701 return (-EINVAL);
702 val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0);
703 break;
704 case ACPI_HP_METHOD_BLUETOOTH_RADIO:
705 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
706 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val))
707 return (-EINVAL);
708 val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0);
709 break;
710 case ACPI_HP_METHOD_BLUETOOTH_ON_AIR:
711 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
712 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val))
713 return (-EINVAL);
714 val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0);
715 break;
716 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
717 val = sc->bluetooth_enable_if_radio_on;
718 break;
719 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
720 val = sc->bluetooth_disable_if_radio_off;
721 break;
722 case ACPI_HP_METHOD_WWAN_ENABLED:
723 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
724 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val))
725 return (-EINVAL);
726 val = ((val & HP_MASK_WWAN_ENABLED) != 0);
727 break;
728 case ACPI_HP_METHOD_WWAN_RADIO:
729 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
730 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val))
731 return (-EINVAL);
732 val = ((val & HP_MASK_WWAN_RADIO) != 0);
733 break;
734 case ACPI_HP_METHOD_WWAN_ON_AIR:
735 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
736 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val))
737 return (-EINVAL);
738 val = ((val & HP_MASK_WWAN_ON_AIR) != 0);
739 break;
740 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
741 val = sc->wwan_enable_if_radio_on;
742 break;
743 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
744 val = sc->wwan_disable_if_radio_off;
745 break;
746 case ACPI_HP_METHOD_ALS:
747 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
748 ACPI_HP_WMI_ALS_COMMAND, 0, 0, &val))
749 return (-EINVAL);
750 break;
751 case ACPI_HP_METHOD_DISPLAY:
752 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
753 ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0, &val))
754 return (-EINVAL);
755 break;
756 case ACPI_HP_METHOD_HDDTEMP:
757 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
758 ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0, &val))
759 return (-EINVAL);
760 break;
761 case ACPI_HP_METHOD_DOCK:
762 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
763 ACPI_HP_WMI_DOCK_COMMAND, 0, 0, &val))
764 return (-EINVAL);
765 break;
766 case ACPI_HP_METHOD_CMI_DETAIL:
767 val = sc->cmi_detail;
768 break;
769 case ACPI_HP_METHOD_VERBOSE:
770 val = sc->verbose;
771 break;
772 }
773
774 return (val);
775 }
776
777 static int
778 acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg)
779 {
780 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
781 ACPI_SERIAL_ASSERT(hp);
782
783 if (method != ACPI_HP_METHOD_CMI_DETAIL &&
784 method != ACPI_HP_METHOD_VERBOSE)
785 arg = arg?1:0;
786
787 if (arg != oldarg) {
788 switch (method) {
789 case ACPI_HP_METHOD_WLAN_ENABLED:
790 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
791 ACPI_HP_WMI_WIRELESS_COMMAND, 1,
792 arg?0x101:0x100, NULL))
793 return (-EINVAL);
794 break;
795 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
796 sc->wlan_enable_if_radio_on = arg;
797 acpi_hp_evaluate_auto_on_off(sc);
798 break;
799 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
800 sc->wlan_disable_if_radio_off = arg;
801 acpi_hp_evaluate_auto_on_off(sc);
802 break;
803 case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
804 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
805 ACPI_HP_WMI_WIRELESS_COMMAND, 1,
806 arg?0x202:0x200, NULL))
807 return (-EINVAL);
808 break;
809 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
810 sc->bluetooth_enable_if_radio_on = arg;
811 acpi_hp_evaluate_auto_on_off(sc);
812 break;
813 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
814 sc->bluetooth_disable_if_radio_off = arg?1:0;
815 acpi_hp_evaluate_auto_on_off(sc);
816 break;
817 case ACPI_HP_METHOD_WWAN_ENABLED:
818 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
819 ACPI_HP_WMI_WIRELESS_COMMAND, 1,
820 arg?0x404:0x400, NULL))
821 return (-EINVAL);
822 break;
823 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
824 sc->wwan_enable_if_radio_on = arg?1:0;
825 acpi_hp_evaluate_auto_on_off(sc);
826 break;
827 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
828 sc->wwan_disable_if_radio_off = arg?1:0;
829 acpi_hp_evaluate_auto_on_off(sc);
830 break;
831 case ACPI_HP_METHOD_ALS:
832 if (acpi_hp_exec_wmi_command(sc->wmi_dev,
833 ACPI_HP_WMI_ALS_COMMAND, 1, arg?1:0, NULL))
834 return (-EINVAL);
835 break;
836 case ACPI_HP_METHOD_CMI_DETAIL:
837 sc->cmi_detail = arg;
838 if ((arg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) !=
839 (oldarg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE)) {
840 sc->cmi_order_size = -1;
841 }
842 break;
843 case ACPI_HP_METHOD_VERBOSE:
844 sc->verbose = arg;
845 break;
846 }
847 }
848
849 return (0);
850 }
851
852 static __inline void
853 acpi_hp_free_buffer(ACPI_BUFFER* buf) {
854 if (buf && buf->Pointer) {
855 AcpiOsFree(buf->Pointer);
856 }
857 }
858
859 static void
860 acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context)
861 {
862 device_t dev = context;
863 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
864
865 struct acpi_hp_softc *sc = device_get_softc(dev);
866 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL };
867 ACPI_OBJECT *obj;
868 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response);
869 obj = (ACPI_OBJECT*) response.Pointer;
870 if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) {
871 switch (*((UINT8 *) obj->Buffer.Pointer)) {
872 case ACPI_HP_EVENT_WIRELESS:
873 acpi_hp_evaluate_auto_on_off(sc);
874 break;
875 default:
876 if (sc->verbose) {
877 device_printf(sc->dev, "Event %02x\n",
878 *((UINT8 *) obj->Buffer.Pointer));
879 }
880 break;
881 }
882 }
883 acpi_hp_free_buffer(&response);
884 }
885
886 static int
887 acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write,
888 int val, int *retval)
889 {
890 UINT32 params[4+32] = { 0x55434553, is_write ? 2 : 1,
891 command, 4, val};
892 UINT32* result;
893 ACPI_OBJECT *obj;
894 ACPI_BUFFER in = { sizeof(params), ¶ms };
895 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
896 int res;
897
898 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID,
899 0, 0x3, &in, &out))) {
900 acpi_hp_free_buffer(&out);
901 return (-EINVAL);
902 }
903 obj = out.Pointer;
904 if (!obj || obj->Type != ACPI_TYPE_BUFFER) {
905 acpi_hp_free_buffer(&out);
906 return (-EINVAL);
907 }
908 result = (UINT32*) obj->Buffer.Pointer;
909 res = result[1];
910 if (res == 0 && retval != NULL)
911 *retval = result[2];
912 acpi_hp_free_buffer(&out);
913
914 return (res);
915 }
916
917 static __inline char*
918 acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) {
919 int length;
920
921 dst[0] = 0;
922 if (obj->Type == ACPI_TYPE_STRING) {
923 length = obj->String.Length+1;
924 if (length > size) {
925 length = size - 1;
926 }
927 strlcpy(dst, obj->String.Pointer, length);
928 acpi_hp_hex_decode(dst);
929 }
930
931 return (dst);
932 }
933
934 /*
935 * Read BIOS Setting block in instance "instance".
936 * The block returned is ACPI_TYPE_PACKAGE which should contain the following
937 * elements:
938 * Index Meaning
939 * 0 Setting Name [string]
940 * 1 Value (comma separated, asterisk marks the current value) [string]
941 * 2 Path within the bios hierarchy [string]
942 * 3 IsReadOnly [int]
943 * 4 DisplayInUI [int]
944 * 5 RequiresPhysicalPresence [int]
945 * 6 Sequence for ordering within the bios settings (absolute) [int]
946 * 7 Length of prerequisites array [int]
947 * 8..8+[7] PrerequisiteN [string]
948 * 9+[7] Current value (in case of enum) [string] / Array length [int]
949 * 10+[7] Enum length [int] / Array values
950 * 11+[7]ff Enum value at index x [string]
951 */
952 static int
953 acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance,
954 char* outbuf, size_t outsize, UINT32* sequence, int detail)
955 {
956 ACPI_OBJECT *obj;
957 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
958 int i;
959 int outlen;
960 int has_enums = 0;
961 int valuebase = 0;
962 char string_buffer[255];
963 int enumbase;
964
965 outlen = 0;
966 outbuf[0] = 0;
967 if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) {
968 acpi_hp_free_buffer(&out);
969 return (-EINVAL);
970 }
971 obj = out.Pointer;
972 if (!obj || obj->Type != ACPI_TYPE_PACKAGE) {
973 acpi_hp_free_buffer(&out);
974 return (-EINVAL);
975 }
976
977 /* Check if first 6 bytes matches our expectations. */
978 if (obj->Package.Count < 8 ||
979 obj->Package.Elements[0].Type != ACPI_TYPE_STRING ||
980 obj->Package.Elements[1].Type != ACPI_TYPE_STRING ||
981 obj->Package.Elements[2].Type != ACPI_TYPE_STRING ||
982 obj->Package.Elements[3].Type != ACPI_TYPE_INTEGER ||
983 obj->Package.Elements[4].Type != ACPI_TYPE_INTEGER ||
984 obj->Package.Elements[5].Type != ACPI_TYPE_INTEGER ||
985 obj->Package.Elements[6].Type != ACPI_TYPE_INTEGER ||
986 obj->Package.Elements[7].Type != ACPI_TYPE_INTEGER) {
987 acpi_hp_free_buffer(&out);
988 return (-EINVAL);
989 }
990
991 /* Skip prerequisites and optionally array. */
992 valuebase = 8 + obj->Package.Elements[7].Integer.Value;
993 if (obj->Package.Count <= valuebase) {
994 acpi_hp_free_buffer(&out);
995 return (-EINVAL);
996 }
997 if (obj->Package.Elements[valuebase].Type == ACPI_TYPE_INTEGER)
998 valuebase += 1 + obj->Package.Elements[valuebase].Integer.Value;
999
1000 /* Check if we have value and enum. */
1001 if (obj->Package.Count <= valuebase + 1 ||
1002 obj->Package.Elements[valuebase].Type != ACPI_TYPE_STRING ||
1003 obj->Package.Elements[valuebase+1].Type != ACPI_TYPE_INTEGER) {
1004 acpi_hp_free_buffer(&out);
1005 return (-EINVAL);
1006 }
1007 enumbase = valuebase + 1;
1008 if (obj->Package.Count <= valuebase +
1009 obj->Package.Elements[enumbase].Integer.Value) {
1010 acpi_hp_free_buffer(&out);
1011 return (-EINVAL);
1012 }
1013
1014 if (detail & ACPI_HP_CMI_DETAIL_PATHS) {
1015 strlcat(outbuf, acpi_hp_get_string_from_object(
1016 &obj->Package.Elements[2],
1017 string_buffer, sizeof(string_buffer)), outsize);
1018 outlen += 48;
1019 while (strlen(outbuf) < outlen)
1020 strlcat(outbuf, " ", outsize);
1021 }
1022 strlcat(outbuf, acpi_hp_get_string_from_object(
1023 &obj->Package.Elements[0],
1024 string_buffer, sizeof(string_buffer)), outsize);
1025 outlen += 43;
1026 while (strlen(outbuf) < outlen)
1027 strlcat(outbuf, " ", outsize);
1028 strlcat(outbuf, acpi_hp_get_string_from_object(
1029 &obj->Package.Elements[valuebase],
1030 string_buffer, sizeof(string_buffer)), outsize);
1031 outlen += 21;
1032 while (strlen(outbuf) < outlen)
1033 strlcat(outbuf, " ", outsize);
1034 for (i = 0; i < strlen(outbuf); ++i)
1035 if (outbuf[i] == '\\')
1036 outbuf[i] = '/';
1037 if (detail & ACPI_HP_CMI_DETAIL_ENUMS) {
1038 for (i = enumbase + 1; i < enumbase + 1 +
1039 obj->Package.Elements[enumbase].Integer.Value; ++i) {
1040 acpi_hp_get_string_from_object(
1041 &obj->Package.Elements[i],
1042 string_buffer, sizeof(string_buffer));
1043 if (strlen(string_buffer) > 1 ||
1044 (strlen(string_buffer) == 1 &&
1045 string_buffer[0] != ' ')) {
1046 if (has_enums)
1047 strlcat(outbuf, "/", outsize);
1048 else
1049 strlcat(outbuf, " (", outsize);
1050 strlcat(outbuf, string_buffer, outsize);
1051 has_enums = 1;
1052 }
1053 }
1054 }
1055 if (has_enums)
1056 strlcat(outbuf, ")", outsize);
1057 if (detail & ACPI_HP_CMI_DETAIL_FLAGS) {
1058 strlcat(outbuf, obj->Package.Elements[3].Integer.Value ?
1059 " [ReadOnly]" : "", outsize);
1060 strlcat(outbuf, obj->Package.Elements[4].Integer.Value ?
1061 "" : " [NOUI]", outsize);
1062 strlcat(outbuf, obj->Package.Elements[5].Integer.Value ?
1063 " [RPP]" : "", outsize);
1064 }
1065 *sequence = (UINT32) obj->Package.Elements[6].Integer.Value;
1066 acpi_hp_free_buffer(&out);
1067
1068 return (0);
1069 }
1070
1071 /*
1072 * Convert given two digit hex string (hexin) to an UINT8 referenced
1073 * by byteout.
1074 * Return != 0 if the was a problem (invalid input)
1075 */
1076 static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout)
1077 {
1078 unsigned int hi;
1079 unsigned int lo;
1080
1081 hi = hexin[0];
1082 lo = hexin[1];
1083 if ('' <= hi && hi <= '9')
1084 hi -= '';
1085 else if ('A' <= hi && hi <= 'F')
1086 hi -= ('A' - 10);
1087 else if ('a' <= hi && hi <= 'f')
1088 hi -= ('a' - 10);
1089 else
1090 return (1);
1091 if ('' <= lo && lo <= '9')
1092 lo -= '';
1093 else if ('A' <= lo && lo <= 'F')
1094 lo -= ('A' - 10);
1095 else if ('a' <= lo && lo <= 'f')
1096 lo -= ('a' - 10);
1097 else
1098 return (1);
1099 *byteout = (hi << 4) + lo;
1100
1101 return (0);
1102 }
1103
1104 static void
1105 acpi_hp_hex_decode(char* buffer)
1106 {
1107 int i;
1108 int length = strlen(buffer);
1109 UINT8 *uin;
1110 UINT8 uout;
1111
1112 if (rounddown((int)length, 2) == length || length < 10)
1113 return;
1114
1115 for (i = 0; i<length; ++i) {
1116 if (!((i+1)%3)) {
1117 if (buffer[i] != ' ')
1118 return;
1119 }
1120 else
1121 if (!((buffer[i] >= '' && buffer[i] <= '9') ||
1122 (buffer[i] >= 'A' && buffer[i] <= 'F')))
1123 return;
1124 }
1125
1126 for (i = 0; i<length; i += 3) {
1127 uin = &buffer[i];
1128 uout = 0;
1129 acpi_hp_hex_to_int(uin, &uout);
1130 buffer[i/3] = (char) uout;
1131 }
1132 buffer[(length+1)/3] = 0;
1133 }
1134
1135 /*
1136 * open hpcmi device
1137 */
1138 static int
1139 acpi_hp_hpcmi_open(struct cdev* dev, int flags, int mode, struct thread *td)
1140 {
1141 struct acpi_hp_softc *sc;
1142 int ret;
1143
1144 if (dev == NULL || dev->si_drv1 == NULL)
1145 return (EBADF);
1146 sc = dev->si_drv1;
1147
1148 ACPI_SERIAL_BEGIN(hp);
1149 if (sc->hpcmi_open_pid != 0) {
1150 ret = EBUSY;
1151 }
1152 else {
1153 if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND)
1154 == NULL) {
1155 ret = ENXIO;
1156 } else {
1157 sc->hpcmi_open_pid = td->td_proc->p_pid;
1158 sc->hpcmi_bufptr = 0;
1159 ret = 0;
1160 }
1161 }
1162 ACPI_SERIAL_END(hp);
1163
1164 return (ret);
1165 }
1166
1167 /*
1168 * close hpcmi device
1169 */
1170 static int
1171 acpi_hp_hpcmi_close(struct cdev* dev, int flags, int mode, struct thread *td)
1172 {
1173 struct acpi_hp_softc *sc;
1174 int ret;
1175
1176 if (dev == NULL || dev->si_drv1 == NULL)
1177 return (EBADF);
1178 sc = dev->si_drv1;
1179
1180 ACPI_SERIAL_BEGIN(hp);
1181 if (sc->hpcmi_open_pid == 0) {
1182 ret = EBADF;
1183 }
1184 else {
1185 if (sc->hpcmi_bufptr != -1) {
1186 sbuf_delete(&sc->hpcmi_sbuf);
1187 sc->hpcmi_bufptr = -1;
1188 }
1189 sc->hpcmi_open_pid = 0;
1190 ret = 0;
1191 }
1192 ACPI_SERIAL_END(hp);
1193
1194 return (ret);
1195 }
1196
1197 /*
1198 * Read from hpcmi bios information
1199 */
1200 static int
1201 acpi_hp_hpcmi_read(struct cdev *dev, struct uio *buf, int flag)
1202 {
1203 struct acpi_hp_softc *sc;
1204 int pos, i, l, ret;
1205 UINT8 instance;
1206 UINT8 maxInstance;
1207 UINT32 sequence;
1208 char line[1025];
1209
1210 if (dev == NULL || dev->si_drv1 == NULL)
1211 return (EBADF);
1212 sc = dev->si_drv1;
1213
1214 ACPI_SERIAL_BEGIN(hp);
1215 if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid
1216 || sc->hpcmi_bufptr == -1) {
1217 ret = EBADF;
1218 }
1219 else {
1220 if (!sbuf_done(&sc->hpcmi_sbuf)) {
1221 if (sc->cmi_order_size < 0) {
1222 maxInstance = sc->has_cmi;
1223 if (!(sc->cmi_detail &
1224 ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) &&
1225 maxInstance > 0) {
1226 maxInstance--;
1227 }
1228 sc->cmi_order_size = 0;
1229 for (instance = 0; instance < maxInstance;
1230 ++instance) {
1231 if (acpi_hp_get_cmi_block(sc->wmi_dev,
1232 ACPI_HP_WMI_CMI_GUID, instance,
1233 line, sizeof(line), &sequence,
1234 sc->cmi_detail)) {
1235 instance = maxInstance;
1236 }
1237 else {
1238 pos = sc->cmi_order_size;
1239 for (i=0;
1240 i<sc->cmi_order_size && i<127;
1241 ++i) {
1242 if (sc->cmi_order[i].sequence > sequence) {
1243 pos = i;
1244 break;
1245 }
1246 }
1247 for (i=sc->cmi_order_size;
1248 i>pos;
1249 --i) {
1250 sc->cmi_order[i].sequence =
1251 sc->cmi_order[i-1].sequence;
1252 sc->cmi_order[i].instance =
1253 sc->cmi_order[i-1].instance;
1254 }
1255 sc->cmi_order[pos].sequence =
1256 sequence;
1257 sc->cmi_order[pos].instance =
1258 instance;
1259 sc->cmi_order_size++;
1260 }
1261 }
1262 }
1263 for (i=0; i<sc->cmi_order_size; ++i) {
1264 if (!acpi_hp_get_cmi_block(sc->wmi_dev,
1265 ACPI_HP_WMI_CMI_GUID,
1266 sc->cmi_order[i].instance, line, sizeof(line),
1267 &sequence, sc->cmi_detail)) {
1268 sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line);
1269 }
1270 }
1271 sbuf_finish(&sc->hpcmi_sbuf);
1272 }
1273 if (sbuf_len(&sc->hpcmi_sbuf) <= 0) {
1274 sbuf_delete(&sc->hpcmi_sbuf);
1275 sc->hpcmi_bufptr = -1;
1276 sc->hpcmi_open_pid = 0;
1277 ret = ENOMEM;
1278 } else {
1279 l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) -
1280 sc->hpcmi_bufptr);
1281 ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) +
1282 sc->hpcmi_bufptr, l, buf) : 0;
1283 sc->hpcmi_bufptr += l;
1284 }
1285 }
1286 ACPI_SERIAL_END(hp);
1287
1288 return (ret);
1289 }
Cache object: b325c0a7b2062e1fc127c58ab3811315
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