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 * $FreeBSD: src/sys/dev/acpi_support/acpi_hp.c,v 1.7 2010/09/11 08:09:14 avg Exp $
27 */
28
29 /*
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.
36 *
37 * HP CMI whitepaper:
38 * http://h20331.www2.hp.com/Hpsub/downloads/cmi_whitepaper.pdf
39 * wmi-hp for Linux:
40 * http://www.kernel.org
41 * WMI and ACPI:
42 * http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx
43 */
44
45 #include "opt_acpi.h"
46 #include <sys/param.h>
47 #include <sys/conf.h>
48 #include <sys/uio.h>
49 #include <sys/proc.h>
50 #include <sys/kernel.h>
51 #include <sys/bus.h>
52 #include <sys/sbuf.h>
53 #include <sys/module.h>
54 #include <sys/sysctl.h>
55 #include <sys/device.h>
56
57 #include "acpi.h"
58 #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
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
96
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
106
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
111
112 struct acpi_hp_inst_seq_pair {
113 UINT32 sequence; /* sequence number as suggested by cmi bios */
114 UINT8 instance; /* object instance on guid */
115 };
116
117 struct acpi_hp_softc {
118 device_t dev;
119 device_t wmi_dev;
120 int has_notify; /* notification GUID found */
121 int has_cmi; /* CMI GUID found */
122 int cmi_detail; /* CMI detail level
123 (set by sysctl) */
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
132 on air status */
133 int was_bluetooth_on_air; /* last known BT
134 on air status */
135 int was_wwan_on_air; /* last known WWAN
136 on air status */
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
142 /dev/hpcmi */
143 int hpcmi_bufptr; /* current pointer position
144 in /dev/hpcmi output buffer
145 */
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 */
149 };
150
151 static struct {
152 char *name;
153 int method;
154 char *description;
155 int access;
156 } acpi_hp_sysctls[] = {
157 {
158 .name = "wlan_enabled",
159 .method = ACPI_HP_METHOD_WLAN_ENABLED,
160 .description = "Enable/Disable WLAN (WiFi)",
161 .access = CTLTYPE_INT | CTLFLAG_RW
162 },
163 {
164 .name = "wlan_radio",
165 .method = ACPI_HP_METHOD_WLAN_RADIO,
166 .description = "WLAN radio status",
167 .access = CTLTYPE_INT | CTLFLAG_RD
168 },
169 {
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
174 },
175 {
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
180 },
181 {
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
186 },
187 {
188 .name = "bt_enabled",
189 .method = ACPI_HP_METHOD_BLUETOOTH_ENABLED,
190 .description = "Enable/Disable Bluetooth",
191 .access = CTLTYPE_INT | CTLFLAG_RW
192 },
193 {
194 .name = "bt_radio",
195 .method = ACPI_HP_METHOD_BLUETOOTH_RADIO,
196 .description = "Bluetooth radio status",
197 .access = CTLTYPE_INT | CTLFLAG_RD
198 },
199 {
200 .name = "bt_on_air",
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
205 },
206 {
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
211 },
212 {
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
217 },
218 {
219 .name = "wwan_enabled",
220 .method = ACPI_HP_METHOD_WWAN_ENABLED,
221 .description = "Enable/Disable WWAN (UMTS)",
222 .access = CTLTYPE_INT | CTLFLAG_RW
223 },
224 {
225 .name = "wwan_radio",
226 .method = ACPI_HP_METHOD_WWAN_RADIO,
227 .description = "WWAN radio status",
228 .access = CTLTYPE_INT | CTLFLAG_RD
229 },
230 {
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
235 },
236 {
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
241 },
242 {
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
247 },
248 {
249 .name = "als_enabled",
250 .method = ACPI_HP_METHOD_ALS,
251 .description = "Enable/Disable ALS (Ambient light sensor)",
252 .access = CTLTYPE_INT | CTLFLAG_RW
253 },
254 {
255 .name = "display",
256 .method = ACPI_HP_METHOD_DISPLAY,
257 .description = "Display status",
258 .access = CTLTYPE_INT | CTLFLAG_RD
259 },
260 {
261 .name = "hdd_temperature",
262 .method = ACPI_HP_METHOD_HDDTEMP,
263 .description = "HDD temperature",
264 .access = CTLTYPE_INT | CTLFLAG_RD
265 },
266 {
267 .name = "is_docked",
268 .method = ACPI_HP_METHOD_DOCK,
269 .description = "Docking station status",
270 .access = CTLTYPE_INT | CTLFLAG_RD
271 },
272 {
273 .name = "cmi_detail",
274 .method = ACPI_HP_METHOD_CMI_DETAIL,
275 .description = "Details shown in CMI output "
276 "(cat /dev/hpcmi)",
277 .access = CTLTYPE_INT | CTLFLAG_RW
278 },
279 {
280 .name = "verbose",
281 .method = ACPI_HP_METHOD_VERBOSE,
282 .description = "Verbosity level",
283 .access = CTLTYPE_INT | CTLFLAG_RW
284 },
285
286 { NULL, 0, NULL, 0 }
287 };
288
289 ACPI_SERIAL_DECL(hp, "HP ACPI-WMI Mapping");
290
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);
295
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);
308
309 #if defined (__FreeBSD__)
310 static d_open_t acpi_hp_hpcmi_open;
311 static d_close_t acpi_hp_hpcmi_close;
312 static d_read_t acpi_hp_hpcmi_read;
313 #else
314 static int acpi_hp_hpcmi_open(struct dev_open_args *ap);
315 static int acpi_hp_hpcmi_close(struct dev_close_args *ap);
316 static int acpi_hp_hpcmi_read(struct dev_read_args *ap);
317 #endif
318
319 /* handler /dev/hpcmi device */
320 static struct dev_ops hpcmi_ops = {
321 { .name = "hpcmi" },
322 .d_open = acpi_hp_hpcmi_open,
323 .d_close = acpi_hp_hpcmi_close,
324 .d_read = acpi_hp_hpcmi_read,
325 };
326
327 static device_method_t acpi_hp_methods[] = {
328 DEVMETHOD(device_identify, acpi_hp_identify),
329 DEVMETHOD(device_probe, acpi_hp_probe),
330 DEVMETHOD(device_attach, acpi_hp_attach),
331 DEVMETHOD(device_detach, acpi_hp_detach),
332 DEVMETHOD_END
333 };
334
335 static driver_t acpi_hp_driver = {
336 "acpi_hp",
337 acpi_hp_methods,
338 sizeof(struct acpi_hp_softc),
339 };
340
341 static devclass_t acpi_hp_devclass;
342
343 DRIVER_MODULE(acpi_hp, acpi_wmi, acpi_hp_driver, acpi_hp_devclass,
344 NULL, NULL);
345 MODULE_VERSION(acpi_hp, 1);
346 MODULE_DEPEND(acpi_hp, acpi_wmi, 1, 1, 1);
347 MODULE_DEPEND(acpi_hp, acpi, 1, 1, 1);
348
349 static void
350 acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc *sc)
351 {
352 int wireless;
353 int new_wlan_status;
354 int new_bluetooth_status;
355 int new_wwan_status;
356
357 wireless = acpi_hp_exec_wmi_command(sc->wmi_dev,
358 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
359 new_wlan_status = -1;
360 new_bluetooth_status = -1;
361 new_wwan_status = -1;
362
363 if (sc->verbose)
364 device_printf(sc->wmi_dev, "Wireless status is %x\n", wireless);
365 if (sc->wlan_disable_if_radio_off && !(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, 0x100);
369 new_wlan_status = 0;
370 }
371 else if (sc->wlan_enable_if_radio_on && (wireless & HP_MASK_WLAN_RADIO)
372 && !(wireless & HP_MASK_WLAN_ENABLED)) {
373 acpi_hp_exec_wmi_command(sc->wmi_dev,
374 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x101);
375 new_wlan_status = 1;
376 }
377 if (sc->bluetooth_disable_if_radio_off &&
378 !(wireless & HP_MASK_BLUETOOTH_RADIO) &&
379 (wireless & HP_MASK_BLUETOOTH_ENABLED)) {
380 acpi_hp_exec_wmi_command(sc->wmi_dev,
381 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x200);
382 new_bluetooth_status = 0;
383 }
384 else if (sc->bluetooth_enable_if_radio_on &&
385 (wireless & HP_MASK_BLUETOOTH_RADIO) &&
386 !(wireless & HP_MASK_BLUETOOTH_ENABLED)) {
387 acpi_hp_exec_wmi_command(sc->wmi_dev,
388 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x202);
389 new_bluetooth_status = 1;
390 }
391 if (sc->wwan_disable_if_radio_off &&
392 !(wireless & HP_MASK_WWAN_RADIO) &&
393 (wireless & HP_MASK_WWAN_ENABLED)) {
394 acpi_hp_exec_wmi_command(sc->wmi_dev,
395 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x400);
396 new_wwan_status = 0;
397 }
398 else if (sc->wwan_enable_if_radio_on &&
399 (wireless & HP_MASK_WWAN_RADIO) &&
400 !(wireless & HP_MASK_WWAN_ENABLED)) {
401 acpi_hp_exec_wmi_command(sc->wmi_dev,
402 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x404);
403 new_wwan_status = 1;
404 }
405
406 if (new_wlan_status == -1) {
407 new_wlan_status = (wireless & HP_MASK_WLAN_ON_AIR);
408 if ((new_wlan_status?1:0) != sc->was_wlan_on_air) {
409 sc->was_wlan_on_air = sc->was_wlan_on_air?0:1;
410 if (sc->verbose)
411 device_printf(sc->wmi_dev,
412 "WLAN on air changed to %i "
413 "(new_wlan_status is %i)\n",
414 sc->was_wlan_on_air, new_wlan_status);
415 acpi_UserNotify("HP", ACPI_ROOT_OBJECT,
416 0xc0+sc->was_wlan_on_air);
417 }
418 }
419 if (new_bluetooth_status == -1) {
420 new_bluetooth_status = (wireless & HP_MASK_BLUETOOTH_ON_AIR);
421 if ((new_bluetooth_status?1:0) != sc->was_bluetooth_on_air) {
422 sc->was_bluetooth_on_air = sc->was_bluetooth_on_air?
423 0:1;
424 if (sc->verbose)
425 device_printf(sc->wmi_dev,
426 "BLUETOOTH on air changed"
427 " to %i (new_bluetooth_status is %i)\n",
428 sc->was_bluetooth_on_air,
429 new_bluetooth_status);
430 acpi_UserNotify("HP", ACPI_ROOT_OBJECT,
431 0xd0+sc->was_bluetooth_on_air);
432 }
433 }
434 if (new_wwan_status == -1) {
435 new_wwan_status = (wireless & HP_MASK_WWAN_ON_AIR);
436 if ((new_wwan_status?1:0) != sc->was_wwan_on_air) {
437 sc->was_wwan_on_air = sc->was_wwan_on_air?0:1;
438 if (sc->verbose)
439 device_printf(sc->wmi_dev,
440 "WWAN on air changed to %i"
441 " (new_wwan_status is %i)\n",
442 sc->was_wwan_on_air, new_wwan_status);
443 acpi_UserNotify("HP", ACPI_ROOT_OBJECT,
444 0xe0+sc->was_wwan_on_air);
445 }
446 }
447 }
448
449 static void
450 acpi_hp_identify(driver_t *driver, device_t parent)
451 {
452
453 /* Don't do anything if driver is disabled. */
454 if (acpi_disabled("hp"))
455 return;
456
457 /* Add only a single device instance. */
458 if (device_find_child(parent, "acpi_hp", -1) != NULL)
459 return;
460
461 if (BUS_ADD_CHILD(parent, parent, 0, "acpi_hp", -1) == NULL)
462 device_printf(parent, "add acpi_hp child failed\n");
463 }
464
465 static int
466 acpi_hp_probe(device_t dev)
467 {
468
469 device_set_desc(dev, "HP ACPI-WMI Mapping");
470 return (0);
471 }
472
473 static int
474 acpi_hp_attach(device_t dev)
475 {
476 struct acpi_hp_softc *sc;
477 struct acpi_softc *acpi_sc;
478 int arg;
479
480 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
481
482 sc = device_get_softc(dev);
483 sc->dev = dev;
484 sc->has_notify = 0;
485 sc->has_cmi = 0;
486 sc->bluetooth_enable_if_radio_on = 0;
487 sc->bluetooth_disable_if_radio_off = 0;
488 sc->wlan_enable_if_radio_on = 0;
489 sc->wlan_disable_if_radio_off = 0;
490 sc->wlan_enable_if_radio_on = 0;
491 sc->wlan_disable_if_radio_off = 0;
492 sc->was_wlan_on_air = 0;
493 sc->was_bluetooth_on_air = 0;
494 sc->was_wwan_on_air = 0;
495 sc->cmi_detail = 0;
496 sc->cmi_order_size = -1;
497 sc->verbose = 0;
498 memset(sc->cmi_order, 0, sizeof(sc->cmi_order));
499 sc->wmi_dev = device_get_parent(dev);
500 acpi_sc = acpi_device_get_parent_softc(sc->wmi_dev);
501
502 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
503 ACPI_HP_WMI_BIOS_GUID)) {
504 device_printf(dev,
505 "WMI device does not provide the HP BIOS GUID\n");
506 return (EINVAL);
507 }
508 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev,
509 ACPI_HP_WMI_EVENT_GUID)) {
510 device_printf(dev,
511 "HP event GUID detected, installing event handler\n");
512 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev,
513 ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) {
514 device_printf(dev,
515 "Could not install notification handler!\n");
516 }
517 else {
518 sc->has_notify = 1;
519 }
520 }
521 if ((sc->has_cmi =
522 ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID)
523 )) {
524 device_printf(dev, "HP CMI GUID detected\n");
525 }
526
527 if (sc->has_cmi) {
528 sc->hpcmi_dev_t = make_dev(&hpcmi_ops, 0, UID_ROOT,
529 GID_WHEEL, 0644, "hpcmi");
530 sc->hpcmi_dev_t->si_drv1 = sc;
531 sc->hpcmi_open_pid = 0;
532 sc->hpcmi_bufptr = -1;
533 }
534
535 ACPI_SERIAL_BEGIN(hp);
536
537 sysctl_ctx_init(&sc->sysctl_ctx);
538 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
539 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO,
540 "hp", CTLFLAG_RD, 0, "");
541
542 for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) {
543 arg = 0;
544 if ((!sc->has_notify &&
545 (acpi_hp_sysctls[i].method ==
546 ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON ||
547 acpi_hp_sysctls[i].method ==
548 ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF ||
549 acpi_hp_sysctls[i].method ==
550 ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON ||
551 acpi_hp_sysctls[i].method ==
552 ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF ||
553 acpi_hp_sysctls[i].method ==
554 ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON ||
555 acpi_hp_sysctls[i].method ==
556 ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) ||
557 (arg = acpi_hp_sysctl_get(sc,
558 acpi_hp_sysctls[i].method)) < 0) {
559 continue;
560 }
561 if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) {
562 sc->was_wlan_on_air = arg;
563 }
564 else if (acpi_hp_sysctls[i].method ==
565 ACPI_HP_METHOD_BLUETOOTH_ON_AIR) {
566 sc->was_bluetooth_on_air = arg;
567 }
568 else if (acpi_hp_sysctls[i].method ==
569 ACPI_HP_METHOD_WWAN_ON_AIR) {
570 sc->was_wwan_on_air = arg;
571 }
572
573 SYSCTL_ADD_PROC(&sc->sysctl_ctx,
574 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
575 acpi_hp_sysctls[i].name, acpi_hp_sysctls[i].access,
576 sc, i, acpi_hp_sysctl, "I",
577 acpi_hp_sysctls[i].description);
578 }
579 ACPI_SERIAL_END(hp);
580
581 return (0);
582 }
583
584 static int
585 acpi_hp_detach(device_t dev)
586 {
587 int ret;
588
589 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
590 struct acpi_hp_softc *sc = device_get_softc(dev);
591 if (sc->has_cmi && sc->hpcmi_open_pid != 0) {
592 ret = EBUSY;
593 }
594 else {
595 if (sc->has_notify) {
596 ACPI_WMI_REMOVE_EVENT_HANDLER(dev,
597 ACPI_HP_WMI_EVENT_GUID);
598 }
599 if (sc->hpcmi_bufptr != -1) {
600 sbuf_delete(&sc->hpcmi_sbuf);
601 sc->hpcmi_bufptr = -1;
602 }
603 sc->hpcmi_open_pid = 0;
604 destroy_dev(sc->hpcmi_dev_t);
605 ret = 0;
606 }
607
608 return (ret);
609 }
610
611 static int
612 acpi_hp_sysctl(SYSCTL_HANDLER_ARGS)
613 {
614 struct acpi_hp_softc *sc;
615 int arg;
616 int oldarg;
617 int error = 0;
618 int function;
619 int method;
620
621 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
622
623 sc = (struct acpi_hp_softc *)oidp->oid_arg1;
624 function = oidp->oid_arg2;
625 method = acpi_hp_sysctls[function].method;
626
627 ACPI_SERIAL_BEGIN(hp);
628 arg = acpi_hp_sysctl_get(sc, method);
629 oldarg = arg;
630 error = sysctl_handle_int(oidp, &arg, 0, req);
631 if (!error && req->newptr != NULL) {
632 error = acpi_hp_sysctl_set(sc, method, arg, oldarg);
633 }
634 ACPI_SERIAL_END(hp);
635
636 return (error);
637 }
638
639 static int
640 acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method)
641 {
642 int val = 0;
643
644 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
645 ACPI_SERIAL_ASSERT(hp);
646
647 switch (method) {
648 case ACPI_HP_METHOD_WLAN_ENABLED:
649 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
650 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
651 val = ((val & HP_MASK_WLAN_ENABLED) != 0);
652 break;
653 case ACPI_HP_METHOD_WLAN_RADIO:
654 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
655 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
656 val = ((val & HP_MASK_WLAN_RADIO) != 0);
657 break;
658 case ACPI_HP_METHOD_WLAN_ON_AIR:
659 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
660 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
661 val = ((val & HP_MASK_WLAN_ON_AIR) != 0);
662 break;
663 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
664 val = sc->wlan_enable_if_radio_on;
665 break;
666 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
667 val = sc->wlan_disable_if_radio_off;
668 break;
669 case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
670 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
671 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
672 val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0);
673 break;
674 case ACPI_HP_METHOD_BLUETOOTH_RADIO:
675 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
676 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
677 val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0);
678 break;
679 case ACPI_HP_METHOD_BLUETOOTH_ON_AIR:
680 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
681 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
682 val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0);
683 break;
684 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
685 val = sc->bluetooth_enable_if_radio_on;
686 break;
687 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
688 val = sc->bluetooth_disable_if_radio_off;
689 break;
690 case ACPI_HP_METHOD_WWAN_ENABLED:
691 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
692 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
693 val = ((val & HP_MASK_WWAN_ENABLED) != 0);
694 break;
695 case ACPI_HP_METHOD_WWAN_RADIO:
696 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
697 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
698 val = ((val & HP_MASK_WWAN_RADIO) != 0);
699 break;
700 case ACPI_HP_METHOD_WWAN_ON_AIR:
701 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
702 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0);
703 val = ((val & HP_MASK_WWAN_ON_AIR) != 0);
704 break;
705 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
706 val = sc->wwan_enable_if_radio_on;
707 break;
708 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
709 val = sc->wwan_disable_if_radio_off;
710 break;
711 case ACPI_HP_METHOD_ALS:
712 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
713 ACPI_HP_WMI_ALS_COMMAND, 0, 0);
714 break;
715 case ACPI_HP_METHOD_DISPLAY:
716 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
717 ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0);
718 break;
719 case ACPI_HP_METHOD_HDDTEMP:
720 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
721 ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0);
722 break;
723 case ACPI_HP_METHOD_DOCK:
724 val = acpi_hp_exec_wmi_command(sc->wmi_dev,
725 ACPI_HP_WMI_DOCK_COMMAND, 0, 0);
726 break;
727 case ACPI_HP_METHOD_CMI_DETAIL:
728 val = sc->cmi_detail;
729 break;
730 case ACPI_HP_METHOD_VERBOSE:
731 val = sc->verbose;
732 break;
733 }
734
735 return (val);
736 }
737
738 static int
739 acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg)
740 {
741 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
742 ACPI_SERIAL_ASSERT(hp);
743
744 if (method != ACPI_HP_METHOD_CMI_DETAIL &&
745 method != ACPI_HP_METHOD_VERBOSE)
746 arg = arg?1:0;
747
748 if (arg != oldarg) {
749 switch (method) {
750 case ACPI_HP_METHOD_WLAN_ENABLED:
751 return (acpi_hp_exec_wmi_command(sc->wmi_dev,
752 ACPI_HP_WMI_WIRELESS_COMMAND, 1,
753 arg?0x101:0x100));
754 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON:
755 sc->wlan_enable_if_radio_on = arg;
756 acpi_hp_evaluate_auto_on_off(sc);
757 break;
758 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF:
759 sc->wlan_disable_if_radio_off = arg;
760 acpi_hp_evaluate_auto_on_off(sc);
761 break;
762 case ACPI_HP_METHOD_BLUETOOTH_ENABLED:
763 return (acpi_hp_exec_wmi_command(sc->wmi_dev,
764 ACPI_HP_WMI_WIRELESS_COMMAND, 1,
765 arg?0x202:0x200));
766 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON:
767 sc->bluetooth_enable_if_radio_on = arg;
768 acpi_hp_evaluate_auto_on_off(sc);
769 break;
770 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF:
771 sc->bluetooth_disable_if_radio_off = arg?1:0;
772 acpi_hp_evaluate_auto_on_off(sc);
773 break;
774 case ACPI_HP_METHOD_WWAN_ENABLED:
775 return (acpi_hp_exec_wmi_command(sc->wmi_dev,
776 ACPI_HP_WMI_WIRELESS_COMMAND, 1,
777 arg?0x404:0x400));
778 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON:
779 sc->wwan_enable_if_radio_on = arg?1:0;
780 acpi_hp_evaluate_auto_on_off(sc);
781 break;
782 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF:
783 sc->wwan_disable_if_radio_off = arg?1:0;
784 acpi_hp_evaluate_auto_on_off(sc);
785 break;
786 case ACPI_HP_METHOD_ALS:
787 return (acpi_hp_exec_wmi_command(sc->wmi_dev,
788 ACPI_HP_WMI_ALS_COMMAND, 1,
789 arg?1:0));
790 case ACPI_HP_METHOD_CMI_DETAIL:
791 sc->cmi_detail = arg;
792 if ((arg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) !=
793 (oldarg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE)) {
794 sc->cmi_order_size = -1;
795 }
796 break;
797 case ACPI_HP_METHOD_VERBOSE:
798 sc->verbose = arg;
799 break;
800 }
801 }
802
803 return (0);
804 }
805
806 static __inline void
807 acpi_hp_free_buffer(ACPI_BUFFER* buf) {
808 if (buf && buf->Pointer) {
809 AcpiOsFree(buf->Pointer);
810 }
811 }
812
813 static void
814 acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context)
815 {
816 device_t dev = context;
817 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
818
819 struct acpi_hp_softc *sc = device_get_softc(dev);
820 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL };
821 ACPI_OBJECT *obj;
822 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response);
823 obj = (ACPI_OBJECT*) response.Pointer;
824 if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) {
825 if (*((UINT8 *) obj->Buffer.Pointer) == 0x5) {
826 acpi_hp_evaluate_auto_on_off(sc);
827 }
828 }
829 acpi_hp_free_buffer(&response);
830 }
831
832 static int
833 acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, int val)
834 {
835 UINT32 params[5] = { 0x55434553,
836 is_write?2:1,
837 command,
838 is_write?4:0,
839 val};
840 UINT32* result;
841 ACPI_OBJECT *obj;
842 ACPI_BUFFER in = { sizeof(params), ¶ms };
843 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
844 int retval;
845
846 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID,
847 0, 0x3, &in, &out))) {
848 acpi_hp_free_buffer(&out);
849 return (-EINVAL);
850 }
851 obj = out.Pointer;
852 if (!obj || obj->Type != ACPI_TYPE_BUFFER) {
853 acpi_hp_free_buffer(&out);
854 return (-EINVAL);
855 }
856 result = (UINT32*) obj->Buffer.Pointer;
857 retval = result[2];
858 if (result[1] > 0) {
859 retval = result[1];
860 }
861 acpi_hp_free_buffer(&out);
862
863 return (retval);
864 }
865
866 static __inline char*
867 acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) {
868 int length;
869
870 dst[0] = 0;
871 if (obj->Type == ACPI_TYPE_STRING) {
872 length = obj->String.Length+1;
873 if (length > size) {
874 length = size - 1;
875 }
876 strlcpy(dst, obj->String.Pointer, length);
877 acpi_hp_hex_decode(dst);
878 }
879
880 return (dst);
881 }
882
883
884 /*
885 * Read BIOS Setting block in instance "instance".
886 * The block returned is ACPI_TYPE_PACKAGE which should contain the following
887 * elements:
888 * Index Meaning
889 * 0 Setting Name [string]
890 * 1 Value (comma separated, asterisk marks the current value) [string]
891 * 2 Path within the bios hierarchy [string]
892 * 3 IsReadOnly [int]
893 * 4 DisplayInUI [int]
894 * 5 RequiresPhysicalPresence [int]
895 * 6 Sequence for ordering within the bios settings (absolute) [int]
896 * 7 Length of prerequisites array [int]
897 * 8..8+[7] PrerequisiteN [string]
898 * 9+[7] Current value (in case of enum) [string] / Array length [int]
899 * 10+[7] Enum length [int] / Array values
900 * 11+[7]ff Enum value at index x [string]
901 */
902 static int
903 acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance,
904 char* outbuf, size_t outsize, UINT32* sequence, int detail)
905 {
906 ACPI_OBJECT *obj;
907 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
908 int i;
909 int outlen;
910 int size = 255;
911 int has_enums = 0;
912 int valuebase = 0;
913 char string_buffer[size];
914 int enumbase;
915
916 outlen = 0;
917 outbuf[0] = 0;
918 if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) {
919 acpi_hp_free_buffer(&out);
920 return (-EINVAL);
921 }
922 obj = out.Pointer;
923 if (!obj || obj->Type != ACPI_TYPE_PACKAGE) {
924 acpi_hp_free_buffer(&out);
925 return (-EINVAL);
926 }
927
928 if (obj->Package.Count >= 8 &&
929 obj->Package.Elements[7].Type == ACPI_TYPE_INTEGER) {
930 valuebase = 8 + obj->Package.Elements[7].Integer.Value;
931 }
932
933 /* check if this matches our expectations based on limited knowledge */
934 if (valuebase > 7 && obj->Package.Count > valuebase + 1 &&
935 obj->Package.Elements[0].Type == ACPI_TYPE_STRING &&
936 obj->Package.Elements[1].Type == ACPI_TYPE_STRING &&
937 obj->Package.Elements[2].Type == ACPI_TYPE_STRING &&
938 obj->Package.Elements[3].Type == ACPI_TYPE_INTEGER &&
939 obj->Package.Elements[4].Type == ACPI_TYPE_INTEGER &&
940 obj->Package.Elements[5].Type == ACPI_TYPE_INTEGER &&
941 obj->Package.Elements[6].Type == ACPI_TYPE_INTEGER &&
942 obj->Package.Elements[valuebase].Type == ACPI_TYPE_STRING &&
943 obj->Package.Elements[valuebase+1].Type == ACPI_TYPE_INTEGER &&
944 obj->Package.Count > valuebase +
945 obj->Package.Elements[valuebase+1].Integer.Value
946 ) {
947 enumbase = valuebase + 1;
948 if (detail & ACPI_HP_CMI_DETAIL_PATHS) {
949 strlcat(outbuf, acpi_hp_get_string_from_object(
950 &obj->Package.Elements[2], string_buffer, size),
951 outsize);
952 outlen += 48;
953 while (strlen(outbuf) < outlen)
954 strlcat(outbuf, " ", outsize);
955 }
956 strlcat(outbuf, acpi_hp_get_string_from_object(
957 &obj->Package.Elements[0], string_buffer, size),
958 outsize);
959 outlen += 43;
960 while (strlen(outbuf) < outlen)
961 strlcat(outbuf, " ", outsize);
962 strlcat(outbuf, acpi_hp_get_string_from_object(
963 &obj->Package.Elements[valuebase], string_buffer,
964 size),
965 outsize);
966 outlen += 21;
967 while (strlen(outbuf) < outlen)
968 strlcat(outbuf, " ", outsize);
969 for (i = 0; i < strlen(outbuf); ++i)
970 if (outbuf[i] == '\\')
971 outbuf[i] = '/';
972 if (detail & ACPI_HP_CMI_DETAIL_ENUMS) {
973 for (i = enumbase + 1; i < enumbase + 1 +
974 obj->Package.Elements[enumbase].Integer.Value;
975 ++i) {
976 acpi_hp_get_string_from_object(
977 &obj->Package.Elements[i], string_buffer,
978 size);
979 if (strlen(string_buffer) > 1 ||
980 (strlen(string_buffer) == 1 &&
981 string_buffer[0] != ' ')) {
982 if (has_enums)
983 strlcat(outbuf, "/", outsize);
984 else
985 strlcat(outbuf, " (", outsize);
986 strlcat(outbuf, string_buffer, outsize);
987 has_enums = 1;
988 }
989 }
990 }
991 if (has_enums)
992 strlcat(outbuf, ")", outsize);
993 if (detail & ACPI_HP_CMI_DETAIL_FLAGS) {
994 strlcat(outbuf, obj->Package.Elements[3].Integer.Value?
995 " [ReadOnly]":"", outsize);
996 strlcat(outbuf, obj->Package.Elements[4].Integer.Value?
997 "":" [NOUI]", outsize);
998 strlcat(outbuf, obj->Package.Elements[5].Integer.Value?
999 " [RPP]":"", outsize);
1000 }
1001 *sequence = (UINT32) obj->Package.Elements[6].Integer.Value;
1002 }
1003 acpi_hp_free_buffer(&out);
1004
1005 return (0);
1006 }
1007
1008
1009
1010 /*
1011 * Convert given two digit hex string (hexin) to an UINT8 referenced
1012 * by byteout.
1013 * Return != 0 if the was a problem (invalid input)
1014 */
1015 static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout)
1016 {
1017 unsigned int hi;
1018 unsigned int lo;
1019
1020 hi = hexin[0];
1021 lo = hexin[1];
1022 if ('' <= hi && hi <= '9')
1023 hi -= '';
1024 else if ('A' <= hi && hi <= 'F')
1025 hi -= ('A' - 10);
1026 else if ('a' <= hi && hi <= 'f')
1027 hi -= ('a' - 10);
1028 else
1029 return (1);
1030 if ('' <= lo && lo <= '9')
1031 lo -= '';
1032 else if ('A' <= lo && lo <= 'F')
1033 lo -= ('A' - 10);
1034 else if ('a' <= lo && lo <= 'f')
1035 lo -= ('a' - 10);
1036 else
1037 return (1);
1038 *byteout = (hi << 4) + lo;
1039
1040 return (0);
1041 }
1042
1043
1044 static void
1045 acpi_hp_hex_decode(char* buffer)
1046 {
1047 int i;
1048 int length = strlen(buffer);
1049 UINT8 *uin;
1050 UINT8 uout;
1051
1052 if (((int)length/2)*2 == length || length < 10) return;
1053
1054 for (i = 0; i<length; ++i) {
1055 if (!((i+1)%3)) {
1056 if (buffer[i] != ' ')
1057 return;
1058 }
1059 else
1060 if (!((buffer[i] >= '' && buffer[i] <= '9') ||
1061 (buffer[i] >= 'A' && buffer[i] <= 'F')))
1062 return;
1063 }
1064
1065 for (i = 0; i<length; i += 3) {
1066 uin = &buffer[i];
1067 uout = 0;
1068 acpi_hp_hex_to_int(uin, &uout);
1069 buffer[i/3] = (char) uout;
1070 }
1071 buffer[(length+1)/3] = 0;
1072 }
1073
1074
1075 /*
1076 * open hpcmi device
1077 */
1078 static int
1079 acpi_hp_hpcmi_open(struct dev_open_args *ap)
1080 {
1081 struct acpi_hp_softc *sc;
1082 int ret;
1083 struct cdev *dev = ap->a_head.a_dev;
1084 struct thread *td = curthread;
1085
1086 if (dev == NULL || dev->si_drv1 == NULL)
1087 return (EBADF);
1088 sc = dev->si_drv1;
1089
1090 ACPI_SERIAL_BEGIN(hp);
1091 if (sc->hpcmi_open_pid != 0) {
1092 ret = EBUSY;
1093 }
1094 else {
1095 if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND)
1096 == NULL) {
1097 ret = ENXIO;
1098 } else {
1099 sc->hpcmi_open_pid = td->td_proc->p_pid;
1100 sc->hpcmi_bufptr = 0;
1101 ret = 0;
1102 }
1103 }
1104 ACPI_SERIAL_END(hp);
1105
1106 return (ret);
1107 }
1108
1109 /*
1110 * close hpcmi device
1111 */
1112 static int
1113 acpi_hp_hpcmi_close(struct dev_close_args *ap)
1114 {
1115 struct acpi_hp_softc *sc;
1116 int ret;
1117 struct cdev *dev = ap->a_head.a_dev;
1118
1119 if (dev == NULL || dev->si_drv1 == NULL)
1120 return (EBADF);
1121 sc = dev->si_drv1;
1122
1123 ACPI_SERIAL_BEGIN(hp);
1124 if (sc->hpcmi_open_pid == 0) {
1125 ret = EBADF;
1126 }
1127 else {
1128 if (sc->hpcmi_bufptr != -1) {
1129 sbuf_delete(&sc->hpcmi_sbuf);
1130 sc->hpcmi_bufptr = -1;
1131 }
1132 sc->hpcmi_open_pid = 0;
1133 ret = 0;
1134 }
1135 ACPI_SERIAL_END(hp);
1136
1137 return (ret);
1138 }
1139
1140 /*
1141 * Read from hpcmi bios information
1142 */
1143 static int
1144 acpi_hp_hpcmi_read(struct dev_read_args *ap)
1145 {
1146 struct acpi_hp_softc *sc;
1147 int pos, i, l, ret;
1148 UINT8 instance;
1149 UINT8 maxInstance;
1150 UINT32 sequence;
1151 int linesize = 1025;
1152 char line[linesize];
1153 struct cdev *dev = ap->a_head.a_dev;
1154 struct uio *buf = ap->a_uio;
1155
1156 if (dev == NULL || dev->si_drv1 == NULL)
1157 return (EBADF);
1158 sc = dev->si_drv1;
1159
1160 ACPI_SERIAL_BEGIN(hp);
1161 if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid
1162 || sc->hpcmi_bufptr == -1) {
1163 ret = EBADF;
1164 }
1165 else {
1166 if (!sbuf_done(&sc->hpcmi_sbuf)) {
1167 if (sc->cmi_order_size < 0) {
1168 maxInstance = sc->has_cmi;
1169 if (!(sc->cmi_detail &
1170 ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) &&
1171 maxInstance > 0) {
1172 maxInstance--;
1173 }
1174 sc->cmi_order_size = 0;
1175 for (instance = 0; instance < maxInstance;
1176 ++instance) {
1177 if (acpi_hp_get_cmi_block(sc->wmi_dev,
1178 ACPI_HP_WMI_CMI_GUID, instance,
1179 line, linesize, &sequence,
1180 sc->cmi_detail)) {
1181 instance = maxInstance;
1182 }
1183 else {
1184 pos = sc->cmi_order_size;
1185 for (i=0;
1186 i<sc->cmi_order_size && i<127;
1187 ++i) {
1188 if (sc->cmi_order[i].sequence > sequence) {
1189 pos = i;
1190 break;
1191 }
1192 }
1193 for (i=sc->cmi_order_size;
1194 i>pos;
1195 --i) {
1196 sc->cmi_order[i].sequence =
1197 sc->cmi_order[i-1].sequence;
1198 sc->cmi_order[i].instance =
1199 sc->cmi_order[i-1].instance;
1200 }
1201 sc->cmi_order[pos].sequence =
1202 sequence;
1203 sc->cmi_order[pos].instance =
1204 instance;
1205 sc->cmi_order_size++;
1206 }
1207 }
1208 }
1209 for (i=0; i<sc->cmi_order_size; ++i) {
1210 if (!acpi_hp_get_cmi_block(sc->wmi_dev,
1211 ACPI_HP_WMI_CMI_GUID,
1212 sc->cmi_order[i].instance, line, linesize,
1213 &sequence, sc->cmi_detail)) {
1214 sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line);
1215 }
1216 }
1217 sbuf_finish(&sc->hpcmi_sbuf);
1218 }
1219 if (sbuf_len(&sc->hpcmi_sbuf) <= 0) {
1220 sbuf_delete(&sc->hpcmi_sbuf);
1221 sc->hpcmi_bufptr = -1;
1222 sc->hpcmi_open_pid = 0;
1223 ret = ENOMEM;
1224 } else {
1225 l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) -
1226 sc->hpcmi_bufptr);
1227 ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) +
1228 sc->hpcmi_bufptr, l, buf) : 0;
1229 sc->hpcmi_bufptr += l;
1230 }
1231 }
1232 ACPI_SERIAL_END(hp);
1233
1234 return (ret);
1235 }
Cache object: 6272a31a46cc7effe0c8ae918db98476
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