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/* 29 * Driver for extra ACPI-controlled features found on HP laptops 30 * that use a WMI enabled BIOS (e.g. HP Compaq 8510p and 6510p). 31 * Allows to control and read status of integrated hardware and read 32 * BIOS settings through CMI. 33 * Inspired by the hp-wmi driver, which implements a subset of these 34 * features (hotkeys) on Linux. 35 * 36 * HP CMI whitepaper: 37 * http://h20331.www2.hp.com/Hpsub/downloads/cmi_whitepaper.pdf 38 * wmi-hp for Linux: 39 * http://www.kernel.org 40 * WMI and ACPI: 41 * http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx 42 */ 43 44#include "opt_acpi.h" 45#include <sys/param.h> 46#include <sys/conf.h> 47#include <sys/uio.h> 48#include <sys/proc.h> 49#include <sys/kernel.h> 50#include <sys/bus.h> 51#include <sys/sbuf.h> 52#include <sys/module.h> 53#include <sys/sysctl.h> 54 55#include <contrib/dev/acpica/include/acpi.h> 56#include <contrib/dev/acpica/include/accommon.h> 57#include <dev/acpica/acpivar.h> 58#include "acpi_wmi_if.h" 59 60#define _COMPONENT ACPI_OEM 61ACPI_MODULE_NAME("HP") 62 63#define ACPI_HP_WMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C" 64#define ACPI_HP_WMI_BIOS_GUID "5FB7F034-2C63-45E9-BE91-3D44E2C707E4" 65#define ACPI_HP_WMI_CMI_GUID "2D114B49-2DFB-4130-B8FE-4A3C09E75133" 66 67#define ACPI_HP_WMI_DISPLAY_COMMAND 0x1 68#define ACPI_HP_WMI_HDDTEMP_COMMAND 0x2 69#define ACPI_HP_WMI_ALS_COMMAND 0x3 70#define ACPI_HP_WMI_DOCK_COMMAND 0x4 71#define ACPI_HP_WMI_WIRELESS_COMMAND 0x5 72#define ACPI_HP_WMI_BIOS_COMMAND 0x9 73#define ACPI_HP_WMI_FEATURE_COMMAND 0xb 74#define ACPI_HP_WMI_HOTKEY_COMMAND 0xc 75#define ACPI_HP_WMI_FEATURE2_COMMAND 0xd 76#define ACPI_HP_WMI_WIRELESS2_COMMAND 0x1b 77#define ACPI_HP_WMI_POSTCODEERROR_COMMAND 0x2a 78 79#define ACPI_HP_METHOD_WLAN_ENABLED 1 80#define ACPI_HP_METHOD_WLAN_RADIO 2 81#define ACPI_HP_METHOD_WLAN_ON_AIR 3 82#define ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON 4 83#define ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF 5 84#define ACPI_HP_METHOD_BLUETOOTH_ENABLED 6 85#define ACPI_HP_METHOD_BLUETOOTH_RADIO 7 86#define ACPI_HP_METHOD_BLUETOOTH_ON_AIR 8 87#define ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON 9 88#define ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF 10 89#define ACPI_HP_METHOD_WWAN_ENABLED 11 90#define ACPI_HP_METHOD_WWAN_RADIO 12 91#define ACPI_HP_METHOD_WWAN_ON_AIR 13 92#define ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON 14 93#define ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF 15 94#define ACPI_HP_METHOD_ALS 16 95#define ACPI_HP_METHOD_DISPLAY 17 96#define ACPI_HP_METHOD_HDDTEMP 18 97#define ACPI_HP_METHOD_DOCK 19 98#define ACPI_HP_METHOD_CMI_DETAIL 20 99#define ACPI_HP_METHOD_VERBOSE 21 100 101#define HP_MASK_WWAN_ON_AIR 0x1000000 102#define HP_MASK_BLUETOOTH_ON_AIR 0x10000 103#define HP_MASK_WLAN_ON_AIR 0x100 104#define HP_MASK_WWAN_RADIO 0x8000000 105#define HP_MASK_BLUETOOTH_RADIO 0x80000 106#define HP_MASK_WLAN_RADIO 0x800 107#define HP_MASK_WWAN_ENABLED 0x2000000 108#define HP_MASK_BLUETOOTH_ENABLED 0x20000 109#define HP_MASK_WLAN_ENABLED 0x200 110 111#define ACPI_HP_EVENT_DOCK 0x01 112#define ACPI_HP_EVENT_PARK_HDD 0x02 113#define ACPI_HP_EVENT_SMART_ADAPTER 0x03 114#define ACPI_HP_EVENT_BEZEL_BUTTON 0x04 115#define ACPI_HP_EVENT_WIRELESS 0x05 116#define ACPI_HP_EVENT_CPU_BATTERY_THROTTLE 0x06 117#define ACPI_HP_EVENT_LOCK_SWITCH 0x07 118#define ACPI_HP_EVENT_LID_SWITCH 0x08 119#define ACPI_HP_EVENT_SCREEN_ROTATION 0x09 120#define ACPI_HP_EVENT_COOLSENSE_SYSTEM_MOBILE 0x0A 121#define ACPI_HP_EVENT_COOLSENSE_SYSTEM_HOT 0x0B 122#define ACPI_HP_EVENT_PROXIMITY_SENSOR 0x0C 123#define ACPI_HP_EVENT_BACKLIT_KB_BRIGHTNESS 0x0D 124#define ACPI_HP_EVENT_PEAKSHIFT_PERIOD 0x0F 125#define ACPI_HP_EVENT_BATTERY_CHARGE_PERIOD 0x10 126 127#define ACPI_HP_CMI_DETAIL_PATHS 0x01 128#define ACPI_HP_CMI_DETAIL_ENUMS 0x02 129#define ACPI_HP_CMI_DETAIL_FLAGS 0x04 130#define ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE 0x08 131 132#define ACPI_HP_WMI_RET_WRONG_SIGNATURE 0x02 133#define ACPI_HP_WMI_RET_UNKNOWN_COMMAND 0x03 134#define ACPI_HP_WMI_RET_UNKNOWN_CMDTYPE 0x04 135#define ACPI_HP_WMI_RET_INVALID_PARAMETERS 0x05 136 137struct acpi_hp_inst_seq_pair { 138 UINT32 sequence; /* sequence number as suggested by cmi bios */ 139 UINT8 instance; /* object instance on guid */ 140}; 141 142struct acpi_hp_softc { 143 device_t dev; 144 device_t wmi_dev; 145 int has_notify; /* notification GUID found */ 146 int has_cmi; /* CMI GUID found */ 147 int has_wireless; /* Wireless command found */ 148 int cmi_detail; /* CMI detail level 149 (set by sysctl) */ 150 int verbose; /* add debug output */ 151 int wlan_enable_if_radio_on; /* set by sysctl */ 152 int wlan_disable_if_radio_off; /* set by sysctl */ 153 int bluetooth_enable_if_radio_on; /* set by sysctl */ 154 int bluetooth_disable_if_radio_off; /* set by sysctl */ 155 int wwan_enable_if_radio_on; /* set by sysctl */ 156 int wwan_disable_if_radio_off; /* set by sysctl */ 157 int was_wlan_on_air; /* last known WLAN 158 on air status */ 159 int was_bluetooth_on_air; /* last known BT 160 on air status */ 161 int was_wwan_on_air; /* last known WWAN 162 on air status */ 163 struct sysctl_ctx_list *sysctl_ctx; 164 struct sysctl_oid *sysctl_tree; 165 struct cdev *hpcmi_dev_t; /* hpcmi device handle */ 166 struct sbuf hpcmi_sbuf; /* /dev/hpcmi output sbuf */ 167 pid_t hpcmi_open_pid; /* pid operating on 168 /dev/hpcmi */ 169 int hpcmi_bufptr; /* current pointer position 170 in /dev/hpcmi output buffer 171 */ 172 int cmi_order_size; /* size of cmi_order list */ 173 struct acpi_hp_inst_seq_pair cmi_order[128]; /* list of CMI 174 instances ordered by BIOS suggested sequence */ 175}; 176 177static struct { 178 char *name; 179 int method; 180 char *description; 181 int flag_rdonly; 182} acpi_hp_sysctls[] = { 183 { 184 .name = "wlan_enabled", 185 .method = ACPI_HP_METHOD_WLAN_ENABLED, 186 .description = "Enable/Disable WLAN (WiFi)", 187 }, 188 { 189 .name = "wlan_radio", 190 .method = ACPI_HP_METHOD_WLAN_RADIO, 191 .description = "WLAN radio status", 192 .flag_rdonly = 1 193 }, 194 { 195 .name = "wlan_on_air", 196 .method = ACPI_HP_METHOD_WLAN_ON_AIR, 197 .description = "WLAN radio ready to use (enabled and radio)", 198 .flag_rdonly = 1 199 }, 200 { 201 .name = "wlan_enable_if_radio_on", 202 .method = ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON, 203 .description = "Enable WLAN if radio is turned on", 204 }, 205 { 206 .name = "wlan_disable_if_radio_off", 207 .method = ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF, 208 .description = "Disable WLAN if radio is turned off", 209 }, 210 { 211 .name = "bt_enabled", 212 .method = ACPI_HP_METHOD_BLUETOOTH_ENABLED, 213 .description = "Enable/Disable Bluetooth", 214 }, 215 { 216 .name = "bt_radio", 217 .method = ACPI_HP_METHOD_BLUETOOTH_RADIO, 218 .description = "Bluetooth radio status", 219 .flag_rdonly = 1 220 }, 221 { 222 .name = "bt_on_air", 223 .method = ACPI_HP_METHOD_BLUETOOTH_ON_AIR, 224 .description = "Bluetooth radio ready to use" 225 " (enabled and radio)", 226 .flag_rdonly = 1 227 }, 228 { 229 .name = "bt_enable_if_radio_on", 230 .method = ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON, 231 .description = "Enable bluetooth if radio is turned on", 232 }, 233 { 234 .name = "bt_disable_if_radio_off", 235 .method = ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF, 236 .description = "Disable bluetooth if radio is turned off", 237 }, 238 { 239 .name = "wwan_enabled", 240 .method = ACPI_HP_METHOD_WWAN_ENABLED, 241 .description = "Enable/Disable WWAN (UMTS)", 242 }, 243 { 244 .name = "wwan_radio", 245 .method = ACPI_HP_METHOD_WWAN_RADIO, 246 .description = "WWAN radio status", 247 .flag_rdonly = 1 248 }, 249 { 250 .name = "wwan_on_air", 251 .method = ACPI_HP_METHOD_WWAN_ON_AIR, 252 .description = "WWAN radio ready to use (enabled and radio)", 253 .flag_rdonly = 1 254 }, 255 { 256 .name = "wwan_enable_if_radio_on", 257 .method = ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON, 258 .description = "Enable WWAN if radio is turned on", 259 }, 260 { 261 .name = "wwan_disable_if_radio_off", 262 .method = ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF, 263 .description = "Disable WWAN if radio is turned off", 264 }, 265 { 266 .name = "als_enabled", 267 .method = ACPI_HP_METHOD_ALS, 268 .description = "Enable/Disable ALS (Ambient light sensor)", 269 }, 270 { 271 .name = "display", 272 .method = ACPI_HP_METHOD_DISPLAY, 273 .description = "Display status", 274 .flag_rdonly = 1 275 }, 276 { 277 .name = "hdd_temperature", 278 .method = ACPI_HP_METHOD_HDDTEMP, 279 .description = "HDD temperature", 280 .flag_rdonly = 1 281 }, 282 { 283 .name = "is_docked", 284 .method = ACPI_HP_METHOD_DOCK, 285 .description = "Docking station status", 286 .flag_rdonly = 1 287 }, 288 { 289 .name = "cmi_detail", 290 .method = ACPI_HP_METHOD_CMI_DETAIL, 291 .description = "Details shown in CMI output " 292 "(cat /dev/hpcmi)", 293 }, 294 { 295 .name = "verbose", 296 .method = ACPI_HP_METHOD_VERBOSE, 297 .description = "Verbosity level", 298 }, 299 { NULL, 0, NULL, 0 } 300}; 301 302ACPI_SERIAL_DECL(hp, "HP ACPI-WMI Mapping"); 303 304static void acpi_hp_identify(driver_t *driver, device_t parent); 305static int acpi_hp_probe(device_t dev); 306static int acpi_hp_attach(device_t dev); 307static int acpi_hp_detach(device_t dev); 308 309static void acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc* sc); 310static int acpi_hp_sysctl(SYSCTL_HANDLER_ARGS); 311static int acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, 312 int arg, int oldarg); 313static int acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method); 314static int acpi_hp_exec_wmi_command(device_t wmi_dev, int command, 315 int is_write, int val, int *retval); 316static void acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context); 317static int acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, 318 UINT8 instance, char* outbuf, size_t outsize, 319 UINT32* sequence, int detail); 320static void acpi_hp_hex_decode(char* buffer); 321 322static d_open_t acpi_hp_hpcmi_open; 323static d_close_t acpi_hp_hpcmi_close; 324static d_read_t acpi_hp_hpcmi_read; 325 326/* handler /dev/hpcmi device */ 327static struct cdevsw hpcmi_cdevsw = { 328 .d_version = D_VERSION, 329 .d_open = acpi_hp_hpcmi_open, 330 .d_close = acpi_hp_hpcmi_close, 331 .d_read = acpi_hp_hpcmi_read, 332 .d_name = "hpcmi", 333}; 334 335static device_method_t acpi_hp_methods[] = { 336 DEVMETHOD(device_identify, acpi_hp_identify), 337 DEVMETHOD(device_probe, acpi_hp_probe), 338 DEVMETHOD(device_attach, acpi_hp_attach), 339 DEVMETHOD(device_detach, acpi_hp_detach), 340 341 DEVMETHOD_END 342}; 343 344static driver_t acpi_hp_driver = { 345 "acpi_hp", 346 acpi_hp_methods, 347 sizeof(struct acpi_hp_softc), 348}; 349 350DRIVER_MODULE(acpi_hp, acpi_wmi, acpi_hp_driver, 0, 0); 351MODULE_DEPEND(acpi_hp, acpi_wmi, 1, 1, 1); 352MODULE_DEPEND(acpi_hp, acpi, 1, 1, 1); 353 354static void 355acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc *sc) 356{ 357 int res; 358 int wireless; 359 int new_wlan_status; 360 int new_bluetooth_status; 361 int new_wwan_status; 362 363 res = acpi_hp_exec_wmi_command(sc->wmi_dev, 364 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &wireless); 365 if (res != 0) { 366 device_printf(sc->wmi_dev, "Wireless command error %x\n", res); 367 return; 368 } 369 new_wlan_status = -1; 370 new_bluetooth_status = -1; 371 new_wwan_status = -1; 372 373 if (sc->verbose) 374 device_printf(sc->wmi_dev, "Wireless status is %x\n", wireless); 375 if (sc->wlan_disable_if_radio_off && !(wireless & HP_MASK_WLAN_RADIO) 376 && (wireless & HP_MASK_WLAN_ENABLED)) { 377 acpi_hp_exec_wmi_command(sc->wmi_dev, 378 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x100, NULL); 379 new_wlan_status = 0; 380 } 381 else if (sc->wlan_enable_if_radio_on && (wireless & HP_MASK_WLAN_RADIO) 382 && !(wireless & HP_MASK_WLAN_ENABLED)) { 383 acpi_hp_exec_wmi_command(sc->wmi_dev, 384 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x101, NULL); 385 new_wlan_status = 1; 386 } 387 if (sc->bluetooth_disable_if_radio_off && 388 !(wireless & HP_MASK_BLUETOOTH_RADIO) && 389 (wireless & HP_MASK_BLUETOOTH_ENABLED)) { 390 acpi_hp_exec_wmi_command(sc->wmi_dev, 391 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x200, NULL); 392 new_bluetooth_status = 0; 393 } 394 else if (sc->bluetooth_enable_if_radio_on && 395 (wireless & HP_MASK_BLUETOOTH_RADIO) && 396 !(wireless & HP_MASK_BLUETOOTH_ENABLED)) { 397 acpi_hp_exec_wmi_command(sc->wmi_dev, 398 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x202, NULL); 399 new_bluetooth_status = 1; 400 } 401 if (sc->wwan_disable_if_radio_off && 402 !(wireless & HP_MASK_WWAN_RADIO) && 403 (wireless & HP_MASK_WWAN_ENABLED)) { 404 acpi_hp_exec_wmi_command(sc->wmi_dev, 405 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x400, NULL); 406 new_wwan_status = 0; 407 } 408 else if (sc->wwan_enable_if_radio_on && 409 (wireless & HP_MASK_WWAN_RADIO) && 410 !(wireless & HP_MASK_WWAN_ENABLED)) { 411 acpi_hp_exec_wmi_command(sc->wmi_dev, 412 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x404, NULL); 413 new_wwan_status = 1; 414 } 415 416 if (new_wlan_status == -1) { 417 new_wlan_status = (wireless & HP_MASK_WLAN_ON_AIR); 418 if ((new_wlan_status?1:0) != sc->was_wlan_on_air) { 419 sc->was_wlan_on_air = sc->was_wlan_on_air?0:1; 420 if (sc->verbose) 421 device_printf(sc->wmi_dev, 422 "WLAN on air changed to %i " 423 "(new_wlan_status is %i)\n", 424 sc->was_wlan_on_air, new_wlan_status); 425 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 426 0xc0+sc->was_wlan_on_air); 427 } 428 } 429 if (new_bluetooth_status == -1) { 430 new_bluetooth_status = (wireless & HP_MASK_BLUETOOTH_ON_AIR); 431 if ((new_bluetooth_status?1:0) != sc->was_bluetooth_on_air) { 432 sc->was_bluetooth_on_air = sc->was_bluetooth_on_air? 433 0:1; 434 if (sc->verbose) 435 device_printf(sc->wmi_dev, 436 "BLUETOOTH on air changed" 437 " to %i (new_bluetooth_status is %i)\n", 438 sc->was_bluetooth_on_air, 439 new_bluetooth_status); 440 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 441 0xd0+sc->was_bluetooth_on_air); 442 } 443 } 444 if (new_wwan_status == -1) { 445 new_wwan_status = (wireless & HP_MASK_WWAN_ON_AIR); 446 if ((new_wwan_status?1:0) != sc->was_wwan_on_air) { 447 sc->was_wwan_on_air = sc->was_wwan_on_air?0:1; 448 if (sc->verbose) 449 device_printf(sc->wmi_dev, 450 "WWAN on air changed to %i" 451 " (new_wwan_status is %i)\n", 452 sc->was_wwan_on_air, new_wwan_status); 453 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 454 0xe0+sc->was_wwan_on_air); 455 } 456 } 457} 458 459static void 460acpi_hp_identify(driver_t *driver, device_t parent) 461{ 462 463 /* Don't do anything if driver is disabled. */ 464 if (acpi_disabled("hp")) 465 return; 466 467 /* Add only a single device instance. */ 468 if (device_find_child(parent, "acpi_hp", -1) != NULL) 469 return; 470 471 /* Check BIOS GUID to see whether system is compatible. */ 472 if (!ACPI_WMI_PROVIDES_GUID_STRING(parent, 473 ACPI_HP_WMI_BIOS_GUID)) 474 return; 475 476 if (BUS_ADD_CHILD(parent, 0, "acpi_hp", -1) == NULL) 477 device_printf(parent, "add acpi_hp child failed\n"); 478} 479 480static int 481acpi_hp_probe(device_t dev) 482{ 483 484 device_set_desc(dev, "HP ACPI-WMI Mapping"); 485 return (0); 486} 487 488static int 489acpi_hp_attach(device_t dev) 490{ 491 struct acpi_hp_softc *sc; 492 int arg; 493 494 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 495 496 sc = device_get_softc(dev); 497 sc->dev = dev; 498 sc->has_notify = 0; 499 sc->has_cmi = 0; 500 sc->bluetooth_enable_if_radio_on = 0; 501 sc->bluetooth_disable_if_radio_off = 0; 502 sc->wlan_enable_if_radio_on = 0; 503 sc->wlan_disable_if_radio_off = 0; 504 sc->wlan_enable_if_radio_on = 0; 505 sc->wlan_disable_if_radio_off = 0; 506 sc->was_wlan_on_air = 0; 507 sc->was_bluetooth_on_air = 0; 508 sc->was_wwan_on_air = 0; 509 sc->cmi_detail = 0; 510 sc->cmi_order_size = -1; 511 sc->verbose = bootverbose; 512 memset(sc->cmi_order, 0, sizeof(sc->cmi_order)); 513 514 sc->wmi_dev = device_get_parent(dev); 515 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 516 ACPI_HP_WMI_BIOS_GUID)) { 517 device_printf(dev, 518 "WMI device does not provide the HP BIOS GUID\n"); 519 return (EINVAL); 520 } 521 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 522 ACPI_HP_WMI_EVENT_GUID)) { 523 device_printf(dev, 524 "HP event GUID detected, installing event handler\n"); 525 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev, 526 ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) { 527 device_printf(dev, 528 "Could not install notification handler!\n"); 529 } 530 else { 531 sc->has_notify = 1; 532 } 533 } 534 if ((sc->has_cmi = 535 ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID) 536 )) { 537 device_printf(dev, "HP CMI GUID detected\n"); 538 } 539 540 if (sc->has_cmi) { 541 sc->hpcmi_dev_t = make_dev(&hpcmi_cdevsw, 0, UID_ROOT, 542 GID_WHEEL, 0644, "hpcmi"); 543 sc->hpcmi_dev_t->si_drv1 = sc; 544 sc->hpcmi_open_pid = 0; 545 sc->hpcmi_bufptr = -1; 546 } 547 548 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 549 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, NULL) == 0) 550 sc->has_wireless = 1; 551 552 ACPI_SERIAL_BEGIN(hp); 553 554 sc->sysctl_ctx = device_get_sysctl_ctx(dev); 555 sc->sysctl_tree = device_get_sysctl_tree(dev); 556 for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) { 557 arg = 0; 558 if (((!sc->has_notify || !sc->has_wireless) && 559 (acpi_hp_sysctls[i].method == 560 ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON || 561 acpi_hp_sysctls[i].method == 562 ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF || 563 acpi_hp_sysctls[i].method == 564 ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON || 565 acpi_hp_sysctls[i].method == 566 ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF || 567 acpi_hp_sysctls[i].method == 568 ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON || 569 acpi_hp_sysctls[i].method == 570 ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) || 571 (arg = acpi_hp_sysctl_get(sc, 572 acpi_hp_sysctls[i].method)) < 0) { 573 continue; 574 } 575 if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) { 576 sc->was_wlan_on_air = arg; 577 } 578 else if (acpi_hp_sysctls[i].method == 579 ACPI_HP_METHOD_BLUETOOTH_ON_AIR) { 580 sc->was_bluetooth_on_air = arg; 581 } 582 else if (acpi_hp_sysctls[i].method == 583 ACPI_HP_METHOD_WWAN_ON_AIR) { 584 sc->was_wwan_on_air = arg; 585 } 586 587 if (acpi_hp_sysctls[i].flag_rdonly != 0) { 588 SYSCTL_ADD_PROC(sc->sysctl_ctx, 589 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 590 acpi_hp_sysctls[i].name, 591 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, 592 sc, i, acpi_hp_sysctl, "I", 593 acpi_hp_sysctls[i].description); 594 } else { 595 SYSCTL_ADD_PROC(sc->sysctl_ctx, 596 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 597 acpi_hp_sysctls[i].name, 598 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, 599 sc, i, acpi_hp_sysctl, "I", 600 acpi_hp_sysctls[i].description); 601 } 602 } 603 ACPI_SERIAL_END(hp); 604 605 return (0); 606} 607 608static int 609acpi_hp_detach(device_t dev) 610{ 611 struct acpi_hp_softc *sc; 612 613 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 614 sc = device_get_softc(dev); 615 if (sc->has_cmi && sc->hpcmi_open_pid != 0) 616 return (EBUSY); 617 618 if (sc->has_notify) { 619 ACPI_WMI_REMOVE_EVENT_HANDLER(sc->wmi_dev, 620 ACPI_HP_WMI_EVENT_GUID); 621 } 622 623 if (sc->has_cmi) { 624 if (sc->hpcmi_bufptr != -1) { 625 sbuf_delete(&sc->hpcmi_sbuf); 626 sc->hpcmi_bufptr = -1; 627 } 628 sc->hpcmi_open_pid = 0; 629 destroy_dev(sc->hpcmi_dev_t); 630 } 631 632 return (0); 633} 634 635static int 636acpi_hp_sysctl(SYSCTL_HANDLER_ARGS) 637{ 638 struct acpi_hp_softc *sc; 639 int arg; 640 int oldarg; 641 int error = 0; 642 int function; 643 int method; 644 645 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 646 647 sc = (struct acpi_hp_softc *)oidp->oid_arg1; 648 function = oidp->oid_arg2; 649 method = acpi_hp_sysctls[function].method; 650 651 ACPI_SERIAL_BEGIN(hp); 652 arg = acpi_hp_sysctl_get(sc, method); 653 oldarg = arg; 654 error = sysctl_handle_int(oidp, &arg, 0, req); 655 if (!error && req->newptr != NULL) { 656 error = acpi_hp_sysctl_set(sc, method, arg, oldarg); 657 } 658 ACPI_SERIAL_END(hp); 659 660 return (error); 661} 662 663static int 664acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method) 665{ 666 int val = 0; 667 668 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 669 ACPI_SERIAL_ASSERT(hp); 670 671 switch (method) { 672 case ACPI_HP_METHOD_WLAN_ENABLED: 673 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 674 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 675 return (-EINVAL); 676 val = ((val & HP_MASK_WLAN_ENABLED) != 0); 677 break; 678 case ACPI_HP_METHOD_WLAN_RADIO: 679 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 680 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 681 return (-EINVAL); 682 val = ((val & HP_MASK_WLAN_RADIO) != 0); 683 break; 684 case ACPI_HP_METHOD_WLAN_ON_AIR: 685 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 686 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 687 return (-EINVAL); 688 val = ((val & HP_MASK_WLAN_ON_AIR) != 0); 689 break; 690 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 691 val = sc->wlan_enable_if_radio_on; 692 break; 693 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 694 val = sc->wlan_disable_if_radio_off; 695 break; 696 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 697 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 698 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 699 return (-EINVAL); 700 val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0); 701 break; 702 case ACPI_HP_METHOD_BLUETOOTH_RADIO: 703 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 704 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 705 return (-EINVAL); 706 val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0); 707 break; 708 case ACPI_HP_METHOD_BLUETOOTH_ON_AIR: 709 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 710 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 711 return (-EINVAL); 712 val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0); 713 break; 714 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 715 val = sc->bluetooth_enable_if_radio_on; 716 break; 717 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 718 val = sc->bluetooth_disable_if_radio_off; 719 break; 720 case ACPI_HP_METHOD_WWAN_ENABLED: 721 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 722 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 723 return (-EINVAL); 724 val = ((val & HP_MASK_WWAN_ENABLED) != 0); 725 break; 726 case ACPI_HP_METHOD_WWAN_RADIO: 727 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 728 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 729 return (-EINVAL); 730 val = ((val & HP_MASK_WWAN_RADIO) != 0); 731 break; 732 case ACPI_HP_METHOD_WWAN_ON_AIR: 733 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 734 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 735 return (-EINVAL); 736 val = ((val & HP_MASK_WWAN_ON_AIR) != 0); 737 break; 738 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 739 val = sc->wwan_enable_if_radio_on; 740 break; 741 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 742 val = sc->wwan_disable_if_radio_off; 743 break; 744 case ACPI_HP_METHOD_ALS: 745 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 746 ACPI_HP_WMI_ALS_COMMAND, 0, 0, &val)) 747 return (-EINVAL); 748 break; 749 case ACPI_HP_METHOD_DISPLAY: 750 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 751 ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0, &val)) 752 return (-EINVAL); 753 break; 754 case ACPI_HP_METHOD_HDDTEMP: 755 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 756 ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0, &val)) 757 return (-EINVAL); 758 break; 759 case ACPI_HP_METHOD_DOCK: 760 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 761 ACPI_HP_WMI_DOCK_COMMAND, 0, 0, &val)) 762 return (-EINVAL); 763 break; 764 case ACPI_HP_METHOD_CMI_DETAIL: 765 val = sc->cmi_detail; 766 break; 767 case ACPI_HP_METHOD_VERBOSE: 768 val = sc->verbose; 769 break; 770 } 771 772 return (val); 773} 774 775static int 776acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg) 777{ 778 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 779 ACPI_SERIAL_ASSERT(hp); 780 781 if (method != ACPI_HP_METHOD_CMI_DETAIL && 782 method != ACPI_HP_METHOD_VERBOSE) 783 arg = arg?1:0; 784 785 if (arg != oldarg) { 786 switch (method) { 787 case ACPI_HP_METHOD_WLAN_ENABLED: 788 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 789 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 790 arg?0x101:0x100, NULL)) 791 return (-EINVAL); 792 break; 793 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 794 sc->wlan_enable_if_radio_on = arg; 795 acpi_hp_evaluate_auto_on_off(sc); 796 break; 797 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 798 sc->wlan_disable_if_radio_off = arg; 799 acpi_hp_evaluate_auto_on_off(sc); 800 break; 801 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 802 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 803 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 804 arg?0x202:0x200, NULL)) 805 return (-EINVAL); 806 break; 807 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 808 sc->bluetooth_enable_if_radio_on = arg; 809 acpi_hp_evaluate_auto_on_off(sc); 810 break; 811 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 812 sc->bluetooth_disable_if_radio_off = arg?1:0; 813 acpi_hp_evaluate_auto_on_off(sc); 814 break; 815 case ACPI_HP_METHOD_WWAN_ENABLED: 816 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 817 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 818 arg?0x404:0x400, NULL)) 819 return (-EINVAL); 820 break; 821 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 822 sc->wwan_enable_if_radio_on = arg?1:0; 823 acpi_hp_evaluate_auto_on_off(sc); 824 break; 825 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 826 sc->wwan_disable_if_radio_off = arg?1:0; 827 acpi_hp_evaluate_auto_on_off(sc); 828 break; 829 case ACPI_HP_METHOD_ALS: 830 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 831 ACPI_HP_WMI_ALS_COMMAND, 1, arg?1:0, NULL)) 832 return (-EINVAL); 833 break; 834 case ACPI_HP_METHOD_CMI_DETAIL: 835 sc->cmi_detail = arg; 836 if ((arg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) != 837 (oldarg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE)) { 838 sc->cmi_order_size = -1; 839 } 840 break; 841 case ACPI_HP_METHOD_VERBOSE: 842 sc->verbose = arg; 843 break; 844 } 845 } 846 847 return (0); 848} 849 850static __inline void 851acpi_hp_free_buffer(ACPI_BUFFER* buf) { 852 if (buf && buf->Pointer) { 853 AcpiOsFree(buf->Pointer); 854 } 855} 856 857static void 858acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context) 859{ 860 device_t dev = context; 861 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 862 863 struct acpi_hp_softc *sc = device_get_softc(dev); 864 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL }; 865 ACPI_OBJECT *obj; 866 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response); 867 obj = (ACPI_OBJECT*) response.Pointer; 868 if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) { 869 switch (*((UINT8 *) obj->Buffer.Pointer)) { 870 case ACPI_HP_EVENT_WIRELESS: 871 acpi_hp_evaluate_auto_on_off(sc); 872 break; 873 default: 874 if (sc->verbose) { 875 device_printf(sc->dev, "Event %02x\n", 876 *((UINT8 *) obj->Buffer.Pointer)); 877 } 878 break; 879 } 880 } 881 acpi_hp_free_buffer(&response); 882} 883 884static int 885acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, 886 int val, int *retval) 887{ 888 UINT32 params[4+32] = { 0x55434553, is_write ? 2 : 1, 889 command, 4, val}; 890 UINT32* result; 891 ACPI_OBJECT *obj; 892 ACPI_BUFFER in = { sizeof(params), ¶ms }; 893 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 894 int res; 895 896 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID, 897 0, 0x3, &in, &out))) { 898 acpi_hp_free_buffer(&out); 899 return (-EINVAL); 900 } 901 obj = out.Pointer; 902 if (!obj || obj->Type != ACPI_TYPE_BUFFER) { 903 acpi_hp_free_buffer(&out); 904 return (-EINVAL); 905 } 906 result = (UINT32*) obj->Buffer.Pointer; 907 res = result[1]; 908 if (res == 0 && retval != NULL) 909 *retval = result[2]; 910 acpi_hp_free_buffer(&out); 911 912 return (res); 913} 914 915static __inline char* 916acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) { 917 int length; 918 919 dst[0] = 0; 920 if (obj->Type == ACPI_TYPE_STRING) { 921 length = obj->String.Length+1; 922 if (length > size) { 923 length = size - 1; 924 } 925 strlcpy(dst, obj->String.Pointer, length); 926 acpi_hp_hex_decode(dst); 927 } 928 929 return (dst); 930} 931 932/* 933 * Read BIOS Setting block in instance "instance". 934 * The block returned is ACPI_TYPE_PACKAGE which should contain the following 935 * elements: 936 * Index Meaning 937 * 0 Setting Name [string] 938 * 1 Value (comma separated, asterisk marks the current value) [string] 939 * 2 Path within the bios hierarchy [string] 940 * 3 IsReadOnly [int] 941 * 4 DisplayInUI [int] 942 * 5 RequiresPhysicalPresence [int] 943 * 6 Sequence for ordering within the bios settings (absolute) [int] 944 * 7 Length of prerequisites array [int] 945 * 8..8+[7] PrerequisiteN [string] 946 * 9+[7] Current value (in case of enum) [string] / Array length [int] 947 * 10+[7] Enum length [int] / Array values 948 * 11+[7]ff Enum value at index x [string] 949 */ 950static int 951acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance, 952 char* outbuf, size_t outsize, UINT32* sequence, int detail) 953{ 954 ACPI_OBJECT *obj; 955 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 956 int i; 957 int outlen; 958 int has_enums = 0; 959 int valuebase = 0; 960 char string_buffer[255]; 961 int enumbase; 962 963 outlen = 0; 964 outbuf[0] = 0; 965 if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) { 966 acpi_hp_free_buffer(&out); 967 return (-EINVAL); 968 } 969 obj = out.Pointer; 970 if (!obj || obj->Type != ACPI_TYPE_PACKAGE) { 971 acpi_hp_free_buffer(&out); 972 return (-EINVAL); 973 } 974 975 /* Check if first 6 bytes matches our expectations. */ 976 if (obj->Package.Count < 8 || 977 obj->Package.Elements[0].Type != ACPI_TYPE_STRING || 978 obj->Package.Elements[1].Type != ACPI_TYPE_STRING || 979 obj->Package.Elements[2].Type != ACPI_TYPE_STRING || 980 obj->Package.Elements[3].Type != ACPI_TYPE_INTEGER || 981 obj->Package.Elements[4].Type != ACPI_TYPE_INTEGER || 982 obj->Package.Elements[5].Type != ACPI_TYPE_INTEGER || 983 obj->Package.Elements[6].Type != ACPI_TYPE_INTEGER || 984 obj->Package.Elements[7].Type != ACPI_TYPE_INTEGER) { 985 acpi_hp_free_buffer(&out); 986 return (-EINVAL); 987 } 988 989 /* Skip prerequisites and optionally array. */ 990 valuebase = 8 + obj->Package.Elements[7].Integer.Value; 991 if (obj->Package.Count <= valuebase) { 992 acpi_hp_free_buffer(&out); 993 return (-EINVAL); 994 } 995 if (obj->Package.Elements[valuebase].Type == ACPI_TYPE_INTEGER) 996 valuebase += 1 + obj->Package.Elements[valuebase].Integer.Value; 997 998 /* Check if we have value and enum. */ 999 if (obj->Package.Count <= valuebase + 1 || 1000 obj->Package.Elements[valuebase].Type != ACPI_TYPE_STRING || 1001 obj->Package.Elements[valuebase+1].Type != ACPI_TYPE_INTEGER) { 1002 acpi_hp_free_buffer(&out); 1003 return (-EINVAL); 1004 } 1005 enumbase = valuebase + 1; 1006 if (obj->Package.Count <= valuebase + 1007 obj->Package.Elements[enumbase].Integer.Value) { 1008 acpi_hp_free_buffer(&out); 1009 return (-EINVAL); 1010 } 1011 1012 if (detail & ACPI_HP_CMI_DETAIL_PATHS) { 1013 strlcat(outbuf, acpi_hp_get_string_from_object( 1014 &obj->Package.Elements[2], 1015 string_buffer, sizeof(string_buffer)), outsize); 1016 outlen += 48; 1017 while (strlen(outbuf) < outlen) 1018 strlcat(outbuf, " ", outsize); 1019 } 1020 strlcat(outbuf, acpi_hp_get_string_from_object( 1021 &obj->Package.Elements[0], 1022 string_buffer, sizeof(string_buffer)), outsize); 1023 outlen += 43; 1024 while (strlen(outbuf) < outlen) 1025 strlcat(outbuf, " ", outsize); 1026 strlcat(outbuf, acpi_hp_get_string_from_object( 1027 &obj->Package.Elements[valuebase], 1028 string_buffer, sizeof(string_buffer)), outsize); 1029 outlen += 21; 1030 while (strlen(outbuf) < outlen) 1031 strlcat(outbuf, " ", outsize); 1032 for (i = 0; i < strlen(outbuf); ++i) 1033 if (outbuf[i] == '\\') 1034 outbuf[i] = '/'; 1035 if (detail & ACPI_HP_CMI_DETAIL_ENUMS) { 1036 for (i = enumbase + 1; i < enumbase + 1 + 1037 obj->Package.Elements[enumbase].Integer.Value; ++i) { 1038 acpi_hp_get_string_from_object( 1039 &obj->Package.Elements[i], 1040 string_buffer, sizeof(string_buffer)); 1041 if (strlen(string_buffer) > 1 || 1042 (strlen(string_buffer) == 1 && 1043 string_buffer[0] != ' ')) { 1044 if (has_enums) 1045 strlcat(outbuf, "/", outsize); 1046 else 1047 strlcat(outbuf, " (", outsize); 1048 strlcat(outbuf, string_buffer, outsize); 1049 has_enums = 1; 1050 } 1051 } 1052 } 1053 if (has_enums) 1054 strlcat(outbuf, ")", outsize); 1055 if (detail & ACPI_HP_CMI_DETAIL_FLAGS) { 1056 strlcat(outbuf, obj->Package.Elements[3].Integer.Value ? 1057 " [ReadOnly]" : "", outsize); 1058 strlcat(outbuf, obj->Package.Elements[4].Integer.Value ? 1059 "" : " [NOUI]", outsize); 1060 strlcat(outbuf, obj->Package.Elements[5].Integer.Value ? 1061 " [RPP]" : "", outsize); 1062 } 1063 *sequence = (UINT32) obj->Package.Elements[6].Integer.Value; 1064 acpi_hp_free_buffer(&out); 1065 1066 return (0); 1067} 1068 1069/* 1070 * Convert given two digit hex string (hexin) to an UINT8 referenced 1071 * by byteout. 1072 * Return != 0 if the was a problem (invalid input) 1073 */ 1074static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout) 1075{ 1076 unsigned int hi; 1077 unsigned int lo; 1078 1079 hi = hexin[0]; 1080 lo = hexin[1]; 1081 if ('0' <= hi && hi <= '9') 1082 hi -= '0'; 1083 else if ('A' <= hi && hi <= 'F') 1084 hi -= ('A' - 10); 1085 else if ('a' <= hi && hi <= 'f') 1086 hi -= ('a' - 10); 1087 else 1088 return (1); 1089 if ('0' <= lo && lo <= '9') 1090 lo -= '0'; 1091 else if ('A' <= lo && lo <= 'F') 1092 lo -= ('A' - 10); 1093 else if ('a' <= lo && lo <= 'f') 1094 lo -= ('a' - 10); 1095 else 1096 return (1); 1097 *byteout = (hi << 4) + lo; 1098 1099 return (0); 1100} 1101 1102static void 1103acpi_hp_hex_decode(char* buffer) 1104{ 1105 int i; 1106 int length = strlen(buffer); 1107 UINT8 *uin; 1108 UINT8 uout; 1109 1110 if (rounddown((int)length, 2) == length || length < 10) 1111 return; 1112 1113 for (i = 0; i<length; ++i) { 1114 if (!((i+1)%3)) { 1115 if (buffer[i] != ' ') 1116 return; 1117 } 1118 else 1119 if (!((buffer[i] >= '0' && buffer[i] <= '9') || 1120 (buffer[i] >= 'A' && buffer[i] <= 'F'))) 1121 return; 1122 } 1123 1124 for (i = 0; i<length; i += 3) { 1125 uin = &buffer[i]; 1126 uout = 0; 1127 acpi_hp_hex_to_int(uin, &uout); 1128 buffer[i/3] = (char) uout; 1129 } 1130 buffer[(length+1)/3] = 0; 1131} 1132 1133/* 1134 * open hpcmi device 1135 */ 1136static int 1137acpi_hp_hpcmi_open(struct cdev* dev, int flags, int mode, struct thread *td) 1138{ 1139 struct acpi_hp_softc *sc; 1140 int ret; 1141 1142 if (dev == NULL || dev->si_drv1 == NULL) 1143 return (EBADF); 1144 sc = dev->si_drv1; 1145 1146 ACPI_SERIAL_BEGIN(hp); 1147 if (sc->hpcmi_open_pid != 0) { 1148 ret = EBUSY; 1149 } 1150 else { 1151 if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND) 1152 == NULL) { 1153 ret = ENXIO; 1154 } else { 1155 sc->hpcmi_open_pid = td->td_proc->p_pid; 1156 sc->hpcmi_bufptr = 0; 1157 ret = 0; 1158 } 1159 } 1160 ACPI_SERIAL_END(hp); 1161 1162 return (ret); 1163} 1164 1165/* 1166 * close hpcmi device 1167 */ 1168static int 1169acpi_hp_hpcmi_close(struct cdev* dev, int flags, int mode, struct thread *td) 1170{ 1171 struct acpi_hp_softc *sc; 1172 int ret; 1173 1174 if (dev == NULL || dev->si_drv1 == NULL) 1175 return (EBADF); 1176 sc = dev->si_drv1; 1177 1178 ACPI_SERIAL_BEGIN(hp); 1179 if (sc->hpcmi_open_pid == 0) { 1180 ret = EBADF; 1181 } 1182 else { 1183 if (sc->hpcmi_bufptr != -1) { 1184 sbuf_delete(&sc->hpcmi_sbuf); 1185 sc->hpcmi_bufptr = -1; 1186 } 1187 sc->hpcmi_open_pid = 0; 1188 ret = 0; 1189 } 1190 ACPI_SERIAL_END(hp); 1191 1192 return (ret); 1193} 1194 1195/* 1196 * Read from hpcmi bios information 1197 */ 1198static int 1199acpi_hp_hpcmi_read(struct cdev *dev, struct uio *buf, int flag) 1200{ 1201 struct acpi_hp_softc *sc; 1202 int pos, i, l, ret; 1203 UINT8 instance; 1204 UINT8 maxInstance; 1205 UINT32 sequence; 1206 char line[1025]; 1207 1208 if (dev == NULL || dev->si_drv1 == NULL) 1209 return (EBADF); 1210 sc = dev->si_drv1; 1211 1212 ACPI_SERIAL_BEGIN(hp); 1213 if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid 1214 || sc->hpcmi_bufptr == -1) { 1215 ret = EBADF; 1216 } 1217 else { 1218 if (!sbuf_done(&sc->hpcmi_sbuf)) { 1219 if (sc->cmi_order_size < 0) { 1220 maxInstance = sc->has_cmi; 1221 if (!(sc->cmi_detail & 1222 ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) && 1223 maxInstance > 0) { 1224 maxInstance--; 1225 } 1226 sc->cmi_order_size = 0; 1227 for (instance = 0; instance < maxInstance; 1228 ++instance) { 1229 if (acpi_hp_get_cmi_block(sc->wmi_dev, 1230 ACPI_HP_WMI_CMI_GUID, instance, 1231 line, sizeof(line), &sequence, 1232 sc->cmi_detail)) { 1233 instance = maxInstance; 1234 } 1235 else { 1236 pos = sc->cmi_order_size; 1237 for (i=0; 1238 i<sc->cmi_order_size && i<127; 1239 ++i) { 1240 if (sc->cmi_order[i].sequence > sequence) { 1241 pos = i; 1242 break; 1243 } 1244 } 1245 for (i=sc->cmi_order_size; 1246 i>pos; 1247 --i) { 1248 sc->cmi_order[i].sequence = 1249 sc->cmi_order[i-1].sequence; 1250 sc->cmi_order[i].instance = 1251 sc->cmi_order[i-1].instance; 1252 } 1253 sc->cmi_order[pos].sequence = 1254 sequence; 1255 sc->cmi_order[pos].instance = 1256 instance; 1257 sc->cmi_order_size++; 1258 } 1259 } 1260 } 1261 for (i=0; i<sc->cmi_order_size; ++i) { 1262 if (!acpi_hp_get_cmi_block(sc->wmi_dev, 1263 ACPI_HP_WMI_CMI_GUID, 1264 sc->cmi_order[i].instance, line, sizeof(line), 1265 &sequence, sc->cmi_detail)) { 1266 sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line); 1267 } 1268 } 1269 sbuf_finish(&sc->hpcmi_sbuf); 1270 } 1271 if (sbuf_len(&sc->hpcmi_sbuf) <= 0) { 1272 sbuf_delete(&sc->hpcmi_sbuf); 1273 sc->hpcmi_bufptr = -1; 1274 sc->hpcmi_open_pid = 0; 1275 ret = ENOMEM; 1276 } else { 1277 l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) - 1278 sc->hpcmi_bufptr); 1279 ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) + 1280 sc->hpcmi_bufptr, l, buf) : 0; 1281 sc->hpcmi_bufptr += l; 1282 } 1283 } 1284 ACPI_SERIAL_END(hp); 1285 1286 return (ret); 1287} 1288