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 }, 301 302 { NULL, 0, NULL, 0 } 303 }; 304 305 ACPI_SERIAL_DECL(hp, "HP ACPI-WMI Mapping"); 306 307 static void acpi_hp_identify(driver_t *driver, device_t parent); 308 static int acpi_hp_probe(device_t dev); 309 static int acpi_hp_attach(device_t dev); 310 static int acpi_hp_detach(device_t dev); 311 312 static void acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc* sc); 313 static int acpi_hp_sysctl(SYSCTL_HANDLER_ARGS); 314 static int acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, 315 int arg, int oldarg); 316 static int acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method); 317 static int acpi_hp_exec_wmi_command(device_t wmi_dev, int command, 318 int is_write, int val, int *retval); 319 static void acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context); 320 static int acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, 321 UINT8 instance, char* outbuf, size_t outsize, 322 UINT32* sequence, int detail); 323 static void acpi_hp_hex_decode(char* buffer); 324 325 static d_open_t acpi_hp_hpcmi_open; 326 static d_close_t acpi_hp_hpcmi_close; 327 static d_read_t acpi_hp_hpcmi_read; 328 329 /* handler /dev/hpcmi device */ 330 static struct cdevsw hpcmi_cdevsw = { 331 .d_version = D_VERSION, 332 .d_open = acpi_hp_hpcmi_open, 333 .d_close = acpi_hp_hpcmi_close, 334 .d_read = acpi_hp_hpcmi_read, 335 .d_name = "hpcmi", 336 }; 337 338 static device_method_t acpi_hp_methods[] = { 339 DEVMETHOD(device_identify, acpi_hp_identify), 340 DEVMETHOD(device_probe, acpi_hp_probe), 341 DEVMETHOD(device_attach, acpi_hp_attach), 342 DEVMETHOD(device_detach, acpi_hp_detach), 343 344 DEVMETHOD_END 345 }; 346 347 static driver_t acpi_hp_driver = { 348 "acpi_hp", 349 acpi_hp_methods, 350 sizeof(struct acpi_hp_softc), 351 }; 352 353 static devclass_t acpi_hp_devclass; 354 355 DRIVER_MODULE(acpi_hp, acpi_wmi, acpi_hp_driver, acpi_hp_devclass, 356 0, 0); 357 MODULE_DEPEND(acpi_hp, acpi_wmi, 1, 1, 1); 358 MODULE_DEPEND(acpi_hp, acpi, 1, 1, 1); 359 360 static void 361 acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc *sc) 362 { 363 int res; 364 int wireless; 365 int new_wlan_status; 366 int new_bluetooth_status; 367 int new_wwan_status; 368 369 res = acpi_hp_exec_wmi_command(sc->wmi_dev, 370 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &wireless); 371 if (res != 0) { 372 device_printf(sc->wmi_dev, "Wireless command error %x\n", res); 373 return; 374 } 375 new_wlan_status = -1; 376 new_bluetooth_status = -1; 377 new_wwan_status = -1; 378 379 if (sc->verbose) 380 device_printf(sc->wmi_dev, "Wireless status is %x\n", wireless); 381 if (sc->wlan_disable_if_radio_off && !(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, 0x100, NULL); 385 new_wlan_status = 0; 386 } 387 else if (sc->wlan_enable_if_radio_on && (wireless & HP_MASK_WLAN_RADIO) 388 && !(wireless & HP_MASK_WLAN_ENABLED)) { 389 acpi_hp_exec_wmi_command(sc->wmi_dev, 390 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x101, NULL); 391 new_wlan_status = 1; 392 } 393 if (sc->bluetooth_disable_if_radio_off && 394 !(wireless & HP_MASK_BLUETOOTH_RADIO) && 395 (wireless & HP_MASK_BLUETOOTH_ENABLED)) { 396 acpi_hp_exec_wmi_command(sc->wmi_dev, 397 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x200, NULL); 398 new_bluetooth_status = 0; 399 } 400 else if (sc->bluetooth_enable_if_radio_on && 401 (wireless & HP_MASK_BLUETOOTH_RADIO) && 402 !(wireless & HP_MASK_BLUETOOTH_ENABLED)) { 403 acpi_hp_exec_wmi_command(sc->wmi_dev, 404 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x202, NULL); 405 new_bluetooth_status = 1; 406 } 407 if (sc->wwan_disable_if_radio_off && 408 !(wireless & HP_MASK_WWAN_RADIO) && 409 (wireless & HP_MASK_WWAN_ENABLED)) { 410 acpi_hp_exec_wmi_command(sc->wmi_dev, 411 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x400, NULL); 412 new_wwan_status = 0; 413 } 414 else if (sc->wwan_enable_if_radio_on && 415 (wireless & HP_MASK_WWAN_RADIO) && 416 !(wireless & HP_MASK_WWAN_ENABLED)) { 417 acpi_hp_exec_wmi_command(sc->wmi_dev, 418 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x404, NULL); 419 new_wwan_status = 1; 420 } 421 422 if (new_wlan_status == -1) { 423 new_wlan_status = (wireless & HP_MASK_WLAN_ON_AIR); 424 if ((new_wlan_status?1:0) != sc->was_wlan_on_air) { 425 sc->was_wlan_on_air = sc->was_wlan_on_air?0:1; 426 if (sc->verbose) 427 device_printf(sc->wmi_dev, 428 "WLAN on air changed to %i " 429 "(new_wlan_status is %i)\n", 430 sc->was_wlan_on_air, new_wlan_status); 431 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 432 0xc0+sc->was_wlan_on_air); 433 } 434 } 435 if (new_bluetooth_status == -1) { 436 new_bluetooth_status = (wireless & HP_MASK_BLUETOOTH_ON_AIR); 437 if ((new_bluetooth_status?1:0) != sc->was_bluetooth_on_air) { 438 sc->was_bluetooth_on_air = sc->was_bluetooth_on_air? 439 0:1; 440 if (sc->verbose) 441 device_printf(sc->wmi_dev, 442 "BLUETOOTH on air changed" 443 " to %i (new_bluetooth_status is %i)\n", 444 sc->was_bluetooth_on_air, 445 new_bluetooth_status); 446 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 447 0xd0+sc->was_bluetooth_on_air); 448 } 449 } 450 if (new_wwan_status == -1) { 451 new_wwan_status = (wireless & HP_MASK_WWAN_ON_AIR); 452 if ((new_wwan_status?1:0) != sc->was_wwan_on_air) { 453 sc->was_wwan_on_air = sc->was_wwan_on_air?0:1; 454 if (sc->verbose) 455 device_printf(sc->wmi_dev, 456 "WWAN on air changed to %i" 457 " (new_wwan_status is %i)\n", 458 sc->was_wwan_on_air, new_wwan_status); 459 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 460 0xe0+sc->was_wwan_on_air); 461 } 462 } 463 } 464 465 static void 466 acpi_hp_identify(driver_t *driver, device_t parent) 467 { 468 469 /* Don't do anything if driver is disabled. */ 470 if (acpi_disabled("hp")) 471 return; 472 473 /* Add only a single device instance. */ 474 if (device_find_child(parent, "acpi_hp", -1) != NULL) 475 return; 476 477 /* Check BIOS GUID to see whether system is compatible. */ 478 if (!ACPI_WMI_PROVIDES_GUID_STRING(parent, 479 ACPI_HP_WMI_BIOS_GUID)) 480 return; 481 482 if (BUS_ADD_CHILD(parent, 0, "acpi_hp", -1) == NULL) 483 device_printf(parent, "add acpi_hp child failed\n"); 484 } 485 486 static int 487 acpi_hp_probe(device_t dev) 488 { 489 490 device_set_desc(dev, "HP ACPI-WMI Mapping"); 491 return (0); 492 } 493 494 static int 495 acpi_hp_attach(device_t dev) 496 { 497 struct acpi_hp_softc *sc; 498 int arg; 499 500 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 501 502 sc = device_get_softc(dev); 503 sc->dev = dev; 504 sc->has_notify = 0; 505 sc->has_cmi = 0; 506 sc->bluetooth_enable_if_radio_on = 0; 507 sc->bluetooth_disable_if_radio_off = 0; 508 sc->wlan_enable_if_radio_on = 0; 509 sc->wlan_disable_if_radio_off = 0; 510 sc->wlan_enable_if_radio_on = 0; 511 sc->wlan_disable_if_radio_off = 0; 512 sc->was_wlan_on_air = 0; 513 sc->was_bluetooth_on_air = 0; 514 sc->was_wwan_on_air = 0; 515 sc->cmi_detail = 0; 516 sc->cmi_order_size = -1; 517 sc->verbose = bootverbose; 518 memset(sc->cmi_order, 0, sizeof(sc->cmi_order)); 519 520 sc->wmi_dev = device_get_parent(dev); 521 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 522 ACPI_HP_WMI_BIOS_GUID)) { 523 device_printf(dev, 524 "WMI device does not provide the HP BIOS GUID\n"); 525 return (EINVAL); 526 } 527 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 528 ACPI_HP_WMI_EVENT_GUID)) { 529 device_printf(dev, 530 "HP event GUID detected, installing event handler\n"); 531 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev, 532 ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) { 533 device_printf(dev, 534 "Could not install notification handler!\n"); 535 } 536 else { 537 sc->has_notify = 1; 538 } 539 } 540 if ((sc->has_cmi = 541 ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID) 542 )) { 543 device_printf(dev, "HP CMI GUID detected\n"); 544 } 545 546 if (sc->has_cmi) { 547 sc->hpcmi_dev_t = make_dev(&hpcmi_cdevsw, 0, UID_ROOT, 548 GID_WHEEL, 0644, "hpcmi"); 549 sc->hpcmi_dev_t->si_drv1 = sc; 550 sc->hpcmi_open_pid = 0; 551 sc->hpcmi_bufptr = -1; 552 } 553 554 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 555 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, NULL) == 0) 556 sc->has_wireless = 1; 557 558 ACPI_SERIAL_BEGIN(hp); 559 560 sc->sysctl_ctx = device_get_sysctl_ctx(dev); 561 sc->sysctl_tree = device_get_sysctl_tree(dev); 562 for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) { 563 arg = 0; 564 if (((!sc->has_notify || !sc->has_wireless) && 565 (acpi_hp_sysctls[i].method == 566 ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON || 567 acpi_hp_sysctls[i].method == 568 ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF || 569 acpi_hp_sysctls[i].method == 570 ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON || 571 acpi_hp_sysctls[i].method == 572 ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF || 573 acpi_hp_sysctls[i].method == 574 ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON || 575 acpi_hp_sysctls[i].method == 576 ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) || 577 (arg = acpi_hp_sysctl_get(sc, 578 acpi_hp_sysctls[i].method)) < 0) { 579 continue; 580 } 581 if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) { 582 sc->was_wlan_on_air = arg; 583 } 584 else if (acpi_hp_sysctls[i].method == 585 ACPI_HP_METHOD_BLUETOOTH_ON_AIR) { 586 sc->was_bluetooth_on_air = arg; 587 } 588 else if (acpi_hp_sysctls[i].method == 589 ACPI_HP_METHOD_WWAN_ON_AIR) { 590 sc->was_wwan_on_air = arg; 591 } 592 593 if (acpi_hp_sysctls[i].flag_rdonly != 0) { 594 SYSCTL_ADD_PROC(sc->sysctl_ctx, 595 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 596 acpi_hp_sysctls[i].name, 597 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, 598 sc, i, acpi_hp_sysctl, "I", 599 acpi_hp_sysctls[i].description); 600 } else { 601 SYSCTL_ADD_PROC(sc->sysctl_ctx, 602 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 603 acpi_hp_sysctls[i].name, 604 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, 605 sc, i, acpi_hp_sysctl, "I", 606 acpi_hp_sysctls[i].description); 607 } 608 } 609 ACPI_SERIAL_END(hp); 610 611 return (0); 612 } 613 614 static int 615 acpi_hp_detach(device_t dev) 616 { 617 struct acpi_hp_softc *sc; 618 619 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 620 sc = device_get_softc(dev); 621 if (sc->has_cmi && sc->hpcmi_open_pid != 0) 622 return (EBUSY); 623 624 if (sc->has_notify) { 625 ACPI_WMI_REMOVE_EVENT_HANDLER(sc->wmi_dev, 626 ACPI_HP_WMI_EVENT_GUID); 627 } 628 629 if (sc->has_cmi) { 630 if (sc->hpcmi_bufptr != -1) { 631 sbuf_delete(&sc->hpcmi_sbuf); 632 sc->hpcmi_bufptr = -1; 633 } 634 sc->hpcmi_open_pid = 0; 635 destroy_dev(sc->hpcmi_dev_t); 636 } 637 638 return (0); 639 } 640 641 static int 642 acpi_hp_sysctl(SYSCTL_HANDLER_ARGS) 643 { 644 struct acpi_hp_softc *sc; 645 int arg; 646 int oldarg; 647 int error = 0; 648 int function; 649 int method; 650 651 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 652 653 sc = (struct acpi_hp_softc *)oidp->oid_arg1; 654 function = oidp->oid_arg2; 655 method = acpi_hp_sysctls[function].method; 656 657 ACPI_SERIAL_BEGIN(hp); 658 arg = acpi_hp_sysctl_get(sc, method); 659 oldarg = arg; 660 error = sysctl_handle_int(oidp, &arg, 0, req); 661 if (!error && req->newptr != NULL) { 662 error = acpi_hp_sysctl_set(sc, method, arg, oldarg); 663 } 664 ACPI_SERIAL_END(hp); 665 666 return (error); 667 } 668 669 static int 670 acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method) 671 { 672 int val = 0; 673 674 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 675 ACPI_SERIAL_ASSERT(hp); 676 677 switch (method) { 678 case ACPI_HP_METHOD_WLAN_ENABLED: 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_ENABLED) != 0); 683 break; 684 case ACPI_HP_METHOD_WLAN_RADIO: 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_RADIO) != 0); 689 break; 690 case ACPI_HP_METHOD_WLAN_ON_AIR: 691 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 692 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 693 return (-EINVAL); 694 val = ((val & HP_MASK_WLAN_ON_AIR) != 0); 695 break; 696 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 697 val = sc->wlan_enable_if_radio_on; 698 break; 699 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 700 val = sc->wlan_disable_if_radio_off; 701 break; 702 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 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_ENABLED) != 0); 707 break; 708 case ACPI_HP_METHOD_BLUETOOTH_RADIO: 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_RADIO) != 0); 713 break; 714 case ACPI_HP_METHOD_BLUETOOTH_ON_AIR: 715 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 716 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 717 return (-EINVAL); 718 val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0); 719 break; 720 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 721 val = sc->bluetooth_enable_if_radio_on; 722 break; 723 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 724 val = sc->bluetooth_disable_if_radio_off; 725 break; 726 case ACPI_HP_METHOD_WWAN_ENABLED: 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_ENABLED) != 0); 731 break; 732 case ACPI_HP_METHOD_WWAN_RADIO: 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_RADIO) != 0); 737 break; 738 case ACPI_HP_METHOD_WWAN_ON_AIR: 739 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 740 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 741 return (-EINVAL); 742 val = ((val & HP_MASK_WWAN_ON_AIR) != 0); 743 break; 744 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 745 val = sc->wwan_enable_if_radio_on; 746 break; 747 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 748 val = sc->wwan_disable_if_radio_off; 749 break; 750 case ACPI_HP_METHOD_ALS: 751 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 752 ACPI_HP_WMI_ALS_COMMAND, 0, 0, &val)) 753 return (-EINVAL); 754 break; 755 case ACPI_HP_METHOD_DISPLAY: 756 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 757 ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0, &val)) 758 return (-EINVAL); 759 break; 760 case ACPI_HP_METHOD_HDDTEMP: 761 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 762 ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0, &val)) 763 return (-EINVAL); 764 break; 765 case ACPI_HP_METHOD_DOCK: 766 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 767 ACPI_HP_WMI_DOCK_COMMAND, 0, 0, &val)) 768 return (-EINVAL); 769 break; 770 case ACPI_HP_METHOD_CMI_DETAIL: 771 val = sc->cmi_detail; 772 break; 773 case ACPI_HP_METHOD_VERBOSE: 774 val = sc->verbose; 775 break; 776 } 777 778 return (val); 779 } 780 781 static int 782 acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg) 783 { 784 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 785 ACPI_SERIAL_ASSERT(hp); 786 787 if (method != ACPI_HP_METHOD_CMI_DETAIL && 788 method != ACPI_HP_METHOD_VERBOSE) 789 arg = arg?1:0; 790 791 if (arg != oldarg) { 792 switch (method) { 793 case ACPI_HP_METHOD_WLAN_ENABLED: 794 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 795 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 796 arg?0x101:0x100, NULL)) 797 return (-EINVAL); 798 break; 799 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 800 sc->wlan_enable_if_radio_on = arg; 801 acpi_hp_evaluate_auto_on_off(sc); 802 break; 803 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 804 sc->wlan_disable_if_radio_off = arg; 805 acpi_hp_evaluate_auto_on_off(sc); 806 break; 807 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 808 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 809 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 810 arg?0x202:0x200, NULL)) 811 return (-EINVAL); 812 break; 813 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 814 sc->bluetooth_enable_if_radio_on = arg; 815 acpi_hp_evaluate_auto_on_off(sc); 816 break; 817 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 818 sc->bluetooth_disable_if_radio_off = arg?1:0; 819 acpi_hp_evaluate_auto_on_off(sc); 820 break; 821 case ACPI_HP_METHOD_WWAN_ENABLED: 822 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 823 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 824 arg?0x404:0x400, NULL)) 825 return (-EINVAL); 826 break; 827 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 828 sc->wwan_enable_if_radio_on = arg?1:0; 829 acpi_hp_evaluate_auto_on_off(sc); 830 break; 831 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 832 sc->wwan_disable_if_radio_off = arg?1:0; 833 acpi_hp_evaluate_auto_on_off(sc); 834 break; 835 case ACPI_HP_METHOD_ALS: 836 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 837 ACPI_HP_WMI_ALS_COMMAND, 1, arg?1:0, NULL)) 838 return (-EINVAL); 839 break; 840 case ACPI_HP_METHOD_CMI_DETAIL: 841 sc->cmi_detail = arg; 842 if ((arg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) != 843 (oldarg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE)) { 844 sc->cmi_order_size = -1; 845 } 846 break; 847 case ACPI_HP_METHOD_VERBOSE: 848 sc->verbose = arg; 849 break; 850 } 851 } 852 853 return (0); 854 } 855 856 static __inline void 857 acpi_hp_free_buffer(ACPI_BUFFER* buf) { 858 if (buf && buf->Pointer) { 859 AcpiOsFree(buf->Pointer); 860 } 861 } 862 863 static void 864 acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context) 865 { 866 device_t dev = context; 867 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 868 869 struct acpi_hp_softc *sc = device_get_softc(dev); 870 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL }; 871 ACPI_OBJECT *obj; 872 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response); 873 obj = (ACPI_OBJECT*) response.Pointer; 874 if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) { 875 switch (*((UINT8 *) obj->Buffer.Pointer)) { 876 case ACPI_HP_EVENT_WIRELESS: 877 acpi_hp_evaluate_auto_on_off(sc); 878 break; 879 default: 880 if (sc->verbose) { 881 device_printf(sc->dev, "Event %02x\n", 882 *((UINT8 *) obj->Buffer.Pointer)); 883 } 884 break; 885 } 886 } 887 acpi_hp_free_buffer(&response); 888 } 889 890 static int 891 acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, 892 int val, int *retval) 893 { 894 UINT32 params[4+32] = { 0x55434553, is_write ? 2 : 1, 895 command, 4, val}; 896 UINT32* result; 897 ACPI_OBJECT *obj; 898 ACPI_BUFFER in = { sizeof(params), ¶ms }; 899 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 900 int res; 901 902 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID, 903 0, 0x3, &in, &out))) { 904 acpi_hp_free_buffer(&out); 905 return (-EINVAL); 906 } 907 obj = out.Pointer; 908 if (!obj || obj->Type != ACPI_TYPE_BUFFER) { 909 acpi_hp_free_buffer(&out); 910 return (-EINVAL); 911 } 912 result = (UINT32*) obj->Buffer.Pointer; 913 res = result[1]; 914 if (res == 0 && retval != NULL) 915 *retval = result[2]; 916 acpi_hp_free_buffer(&out); 917 918 return (res); 919 } 920 921 static __inline char* 922 acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) { 923 int length; 924 925 dst[0] = 0; 926 if (obj->Type == ACPI_TYPE_STRING) { 927 length = obj->String.Length+1; 928 if (length > size) { 929 length = size - 1; 930 } 931 strlcpy(dst, obj->String.Pointer, length); 932 acpi_hp_hex_decode(dst); 933 } 934 935 return (dst); 936 } 937 938 939 /* 940 * Read BIOS Setting block in instance "instance". 941 * The block returned is ACPI_TYPE_PACKAGE which should contain the following 942 * elements: 943 * Index Meaning 944 * 0 Setting Name [string] 945 * 1 Value (comma separated, asterisk marks the current value) [string] 946 * 2 Path within the bios hierarchy [string] 947 * 3 IsReadOnly [int] 948 * 4 DisplayInUI [int] 949 * 5 RequiresPhysicalPresence [int] 950 * 6 Sequence for ordering within the bios settings (absolute) [int] 951 * 7 Length of prerequisites array [int] 952 * 8..8+[7] PrerequisiteN [string] 953 * 9+[7] Current value (in case of enum) [string] / Array length [int] 954 * 10+[7] Enum length [int] / Array values 955 * 11+[7]ff Enum value at index x [string] 956 */ 957 static int 958 acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance, 959 char* outbuf, size_t outsize, UINT32* sequence, int detail) 960 { 961 ACPI_OBJECT *obj; 962 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 963 int i; 964 int outlen; 965 int has_enums = 0; 966 int valuebase = 0; 967 char string_buffer[255]; 968 int enumbase; 969 970 outlen = 0; 971 outbuf[0] = 0; 972 if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) { 973 acpi_hp_free_buffer(&out); 974 return (-EINVAL); 975 } 976 obj = out.Pointer; 977 if (!obj || obj->Type != ACPI_TYPE_PACKAGE) { 978 acpi_hp_free_buffer(&out); 979 return (-EINVAL); 980 } 981 982 /* Check if first 6 bytes matches our expectations. */ 983 if (obj->Package.Count < 8 || 984 obj->Package.Elements[0].Type != ACPI_TYPE_STRING || 985 obj->Package.Elements[1].Type != ACPI_TYPE_STRING || 986 obj->Package.Elements[2].Type != ACPI_TYPE_STRING || 987 obj->Package.Elements[3].Type != ACPI_TYPE_INTEGER || 988 obj->Package.Elements[4].Type != ACPI_TYPE_INTEGER || 989 obj->Package.Elements[5].Type != ACPI_TYPE_INTEGER || 990 obj->Package.Elements[6].Type != ACPI_TYPE_INTEGER || 991 obj->Package.Elements[7].Type != ACPI_TYPE_INTEGER) { 992 acpi_hp_free_buffer(&out); 993 return (-EINVAL); 994 } 995 996 /* Skip prerequisites and optionally array. */ 997 valuebase = 8 + obj->Package.Elements[7].Integer.Value; 998 if (obj->Package.Count <= valuebase) { 999 acpi_hp_free_buffer(&out); 1000 return (-EINVAL); 1001 } 1002 if (obj->Package.Elements[valuebase].Type == ACPI_TYPE_INTEGER) 1003 valuebase += 1 + obj->Package.Elements[valuebase].Integer.Value; 1004 1005 /* Check if we have value and enum. */ 1006 if (obj->Package.Count <= valuebase + 1 || 1007 obj->Package.Elements[valuebase].Type != ACPI_TYPE_STRING || 1008 obj->Package.Elements[valuebase+1].Type != ACPI_TYPE_INTEGER) { 1009 acpi_hp_free_buffer(&out); 1010 return (-EINVAL); 1011 } 1012 enumbase = valuebase + 1; 1013 if (obj->Package.Count <= valuebase + 1014 obj->Package.Elements[enumbase].Integer.Value) { 1015 acpi_hp_free_buffer(&out); 1016 return (-EINVAL); 1017 } 1018 1019 if (detail & ACPI_HP_CMI_DETAIL_PATHS) { 1020 strlcat(outbuf, acpi_hp_get_string_from_object( 1021 &obj->Package.Elements[2], 1022 string_buffer, sizeof(string_buffer)), outsize); 1023 outlen += 48; 1024 while (strlen(outbuf) < outlen) 1025 strlcat(outbuf, " ", outsize); 1026 } 1027 strlcat(outbuf, acpi_hp_get_string_from_object( 1028 &obj->Package.Elements[0], 1029 string_buffer, sizeof(string_buffer)), outsize); 1030 outlen += 43; 1031 while (strlen(outbuf) < outlen) 1032 strlcat(outbuf, " ", outsize); 1033 strlcat(outbuf, acpi_hp_get_string_from_object( 1034 &obj->Package.Elements[valuebase], 1035 string_buffer, sizeof(string_buffer)), outsize); 1036 outlen += 21; 1037 while (strlen(outbuf) < outlen) 1038 strlcat(outbuf, " ", outsize); 1039 for (i = 0; i < strlen(outbuf); ++i) 1040 if (outbuf[i] == '\\') 1041 outbuf[i] = '/'; 1042 if (detail & ACPI_HP_CMI_DETAIL_ENUMS) { 1043 for (i = enumbase + 1; i < enumbase + 1 + 1044 obj->Package.Elements[enumbase].Integer.Value; ++i) { 1045 acpi_hp_get_string_from_object( 1046 &obj->Package.Elements[i], 1047 string_buffer, sizeof(string_buffer)); 1048 if (strlen(string_buffer) > 1 || 1049 (strlen(string_buffer) == 1 && 1050 string_buffer[0] != ' ')) { 1051 if (has_enums) 1052 strlcat(outbuf, "/", outsize); 1053 else 1054 strlcat(outbuf, " (", outsize); 1055 strlcat(outbuf, string_buffer, outsize); 1056 has_enums = 1; 1057 } 1058 } 1059 } 1060 if (has_enums) 1061 strlcat(outbuf, ")", outsize); 1062 if (detail & ACPI_HP_CMI_DETAIL_FLAGS) { 1063 strlcat(outbuf, obj->Package.Elements[3].Integer.Value ? 1064 " [ReadOnly]" : "", outsize); 1065 strlcat(outbuf, obj->Package.Elements[4].Integer.Value ? 1066 "" : " [NOUI]", outsize); 1067 strlcat(outbuf, obj->Package.Elements[5].Integer.Value ? 1068 " [RPP]" : "", outsize); 1069 } 1070 *sequence = (UINT32) obj->Package.Elements[6].Integer.Value; 1071 acpi_hp_free_buffer(&out); 1072 1073 return (0); 1074 } 1075 1076 1077 1078 /* 1079 * Convert given two digit hex string (hexin) to an UINT8 referenced 1080 * by byteout. 1081 * Return != 0 if the was a problem (invalid input) 1082 */ 1083 static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout) 1084 { 1085 unsigned int hi; 1086 unsigned int lo; 1087 1088 hi = hexin[0]; 1089 lo = hexin[1]; 1090 if ('0' <= hi && hi <= '9') 1091 hi -= '0'; 1092 else if ('A' <= hi && hi <= 'F') 1093 hi -= ('A' - 10); 1094 else if ('a' <= hi && hi <= 'f') 1095 hi -= ('a' - 10); 1096 else 1097 return (1); 1098 if ('0' <= lo && lo <= '9') 1099 lo -= '0'; 1100 else if ('A' <= lo && lo <= 'F') 1101 lo -= ('A' - 10); 1102 else if ('a' <= lo && lo <= 'f') 1103 lo -= ('a' - 10); 1104 else 1105 return (1); 1106 *byteout = (hi << 4) + lo; 1107 1108 return (0); 1109 } 1110 1111 1112 static void 1113 acpi_hp_hex_decode(char* buffer) 1114 { 1115 int i; 1116 int length = strlen(buffer); 1117 UINT8 *uin; 1118 UINT8 uout; 1119 1120 if (rounddown((int)length, 2) == length || length < 10) 1121 return; 1122 1123 for (i = 0; i<length; ++i) { 1124 if (!((i+1)%3)) { 1125 if (buffer[i] != ' ') 1126 return; 1127 } 1128 else 1129 if (!((buffer[i] >= '0' && buffer[i] <= '9') || 1130 (buffer[i] >= 'A' && buffer[i] <= 'F'))) 1131 return; 1132 } 1133 1134 for (i = 0; i<length; i += 3) { 1135 uin = &buffer[i]; 1136 uout = 0; 1137 acpi_hp_hex_to_int(uin, &uout); 1138 buffer[i/3] = (char) uout; 1139 } 1140 buffer[(length+1)/3] = 0; 1141 } 1142 1143 1144 /* 1145 * open hpcmi device 1146 */ 1147 static int 1148 acpi_hp_hpcmi_open(struct cdev* dev, int flags, int mode, struct thread *td) 1149 { 1150 struct acpi_hp_softc *sc; 1151 int ret; 1152 1153 if (dev == NULL || dev->si_drv1 == NULL) 1154 return (EBADF); 1155 sc = dev->si_drv1; 1156 1157 ACPI_SERIAL_BEGIN(hp); 1158 if (sc->hpcmi_open_pid != 0) { 1159 ret = EBUSY; 1160 } 1161 else { 1162 if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND) 1163 == NULL) { 1164 ret = ENXIO; 1165 } else { 1166 sc->hpcmi_open_pid = td->td_proc->p_pid; 1167 sc->hpcmi_bufptr = 0; 1168 ret = 0; 1169 } 1170 } 1171 ACPI_SERIAL_END(hp); 1172 1173 return (ret); 1174 } 1175 1176 /* 1177 * close hpcmi device 1178 */ 1179 static int 1180 acpi_hp_hpcmi_close(struct cdev* dev, int flags, int mode, struct thread *td) 1181 { 1182 struct acpi_hp_softc *sc; 1183 int ret; 1184 1185 if (dev == NULL || dev->si_drv1 == NULL) 1186 return (EBADF); 1187 sc = dev->si_drv1; 1188 1189 ACPI_SERIAL_BEGIN(hp); 1190 if (sc->hpcmi_open_pid == 0) { 1191 ret = EBADF; 1192 } 1193 else { 1194 if (sc->hpcmi_bufptr != -1) { 1195 sbuf_delete(&sc->hpcmi_sbuf); 1196 sc->hpcmi_bufptr = -1; 1197 } 1198 sc->hpcmi_open_pid = 0; 1199 ret = 0; 1200 } 1201 ACPI_SERIAL_END(hp); 1202 1203 return (ret); 1204 } 1205 1206 /* 1207 * Read from hpcmi bios information 1208 */ 1209 static int 1210 acpi_hp_hpcmi_read(struct cdev *dev, struct uio *buf, int flag) 1211 { 1212 struct acpi_hp_softc *sc; 1213 int pos, i, l, ret; 1214 UINT8 instance; 1215 UINT8 maxInstance; 1216 UINT32 sequence; 1217 char line[1025]; 1218 1219 if (dev == NULL || dev->si_drv1 == NULL) 1220 return (EBADF); 1221 sc = dev->si_drv1; 1222 1223 ACPI_SERIAL_BEGIN(hp); 1224 if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid 1225 || sc->hpcmi_bufptr == -1) { 1226 ret = EBADF; 1227 } 1228 else { 1229 if (!sbuf_done(&sc->hpcmi_sbuf)) { 1230 if (sc->cmi_order_size < 0) { 1231 maxInstance = sc->has_cmi; 1232 if (!(sc->cmi_detail & 1233 ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) && 1234 maxInstance > 0) { 1235 maxInstance--; 1236 } 1237 sc->cmi_order_size = 0; 1238 for (instance = 0; instance < maxInstance; 1239 ++instance) { 1240 if (acpi_hp_get_cmi_block(sc->wmi_dev, 1241 ACPI_HP_WMI_CMI_GUID, instance, 1242 line, sizeof(line), &sequence, 1243 sc->cmi_detail)) { 1244 instance = maxInstance; 1245 } 1246 else { 1247 pos = sc->cmi_order_size; 1248 for (i=0; 1249 i<sc->cmi_order_size && i<127; 1250 ++i) { 1251 if (sc->cmi_order[i].sequence > sequence) { 1252 pos = i; 1253 break; 1254 } 1255 } 1256 for (i=sc->cmi_order_size; 1257 i>pos; 1258 --i) { 1259 sc->cmi_order[i].sequence = 1260 sc->cmi_order[i-1].sequence; 1261 sc->cmi_order[i].instance = 1262 sc->cmi_order[i-1].instance; 1263 } 1264 sc->cmi_order[pos].sequence = 1265 sequence; 1266 sc->cmi_order[pos].instance = 1267 instance; 1268 sc->cmi_order_size++; 1269 } 1270 } 1271 } 1272 for (i=0; i<sc->cmi_order_size; ++i) { 1273 if (!acpi_hp_get_cmi_block(sc->wmi_dev, 1274 ACPI_HP_WMI_CMI_GUID, 1275 sc->cmi_order[i].instance, line, sizeof(line), 1276 &sequence, sc->cmi_detail)) { 1277 sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line); 1278 } 1279 } 1280 sbuf_finish(&sc->hpcmi_sbuf); 1281 } 1282 if (sbuf_len(&sc->hpcmi_sbuf) <= 0) { 1283 sbuf_delete(&sc->hpcmi_sbuf); 1284 sc->hpcmi_bufptr = -1; 1285 sc->hpcmi_open_pid = 0; 1286 ret = ENOMEM; 1287 } else { 1288 l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) - 1289 sc->hpcmi_bufptr); 1290 ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) + 1291 sc->hpcmi_bufptr, l, buf) : 0; 1292 sc->hpcmi_bufptr += l; 1293 } 1294 } 1295 ACPI_SERIAL_END(hp); 1296 1297 return (ret); 1298 } 1299