1 /*- 2 * Copyright (c) 2009 Michael Gmelin <freebsd@grem.de> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 /* 31 * Driver for extra ACPI-controlled features found on HP laptops 32 * that use a WMI enabled BIOS (e.g. HP Compaq 8510p and 6510p). 33 * Allows to control and read status of integrated hardware and read 34 * BIOS settings through CMI. 35 * Inspired by the hp-wmi driver, which implements a subset of these 36 * features (hotkeys) on Linux. 37 * 38 * HP CMI whitepaper: 39 * http://h20331.www2.hp.com/Hpsub/downloads/cmi_whitepaper.pdf 40 * wmi-hp for Linux: 41 * http://www.kernel.org 42 * WMI and ACPI: 43 * http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx 44 */ 45 46 #include "opt_acpi.h" 47 #include <sys/param.h> 48 #include <sys/conf.h> 49 #include <sys/uio.h> 50 #include <sys/proc.h> 51 #include <sys/kernel.h> 52 #include <sys/bus.h> 53 #include <sys/sbuf.h> 54 #include <sys/module.h> 55 #include <sys/sysctl.h> 56 57 #include <contrib/dev/acpica/include/acpi.h> 58 #include <contrib/dev/acpica/include/accommon.h> 59 #include <dev/acpica/acpivar.h> 60 #include "acpi_wmi_if.h" 61 62 #define _COMPONENT ACPI_OEM 63 ACPI_MODULE_NAME("HP") 64 65 #define ACPI_HP_WMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C" 66 #define ACPI_HP_WMI_BIOS_GUID "5FB7F034-2C63-45E9-BE91-3D44E2C707E4" 67 #define ACPI_HP_WMI_CMI_GUID "2D114B49-2DFB-4130-B8FE-4A3C09E75133" 68 69 #define ACPI_HP_WMI_DISPLAY_COMMAND 0x1 70 #define ACPI_HP_WMI_HDDTEMP_COMMAND 0x2 71 #define ACPI_HP_WMI_ALS_COMMAND 0x3 72 #define ACPI_HP_WMI_DOCK_COMMAND 0x4 73 #define ACPI_HP_WMI_WIRELESS_COMMAND 0x5 74 #define ACPI_HP_WMI_BIOS_COMMAND 0x9 75 #define ACPI_HP_WMI_FEATURE_COMMAND 0xb 76 #define ACPI_HP_WMI_HOTKEY_COMMAND 0xc 77 #define ACPI_HP_WMI_FEATURE2_COMMAND 0xd 78 #define ACPI_HP_WMI_WIRELESS2_COMMAND 0x1b 79 #define ACPI_HP_WMI_POSTCODEERROR_COMMAND 0x2a 80 81 #define ACPI_HP_METHOD_WLAN_ENABLED 1 82 #define ACPI_HP_METHOD_WLAN_RADIO 2 83 #define ACPI_HP_METHOD_WLAN_ON_AIR 3 84 #define ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON 4 85 #define ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF 5 86 #define ACPI_HP_METHOD_BLUETOOTH_ENABLED 6 87 #define ACPI_HP_METHOD_BLUETOOTH_RADIO 7 88 #define ACPI_HP_METHOD_BLUETOOTH_ON_AIR 8 89 #define ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON 9 90 #define ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF 10 91 #define ACPI_HP_METHOD_WWAN_ENABLED 11 92 #define ACPI_HP_METHOD_WWAN_RADIO 12 93 #define ACPI_HP_METHOD_WWAN_ON_AIR 13 94 #define ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON 14 95 #define ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF 15 96 #define ACPI_HP_METHOD_ALS 16 97 #define ACPI_HP_METHOD_DISPLAY 17 98 #define ACPI_HP_METHOD_HDDTEMP 18 99 #define ACPI_HP_METHOD_DOCK 19 100 #define ACPI_HP_METHOD_CMI_DETAIL 20 101 #define ACPI_HP_METHOD_VERBOSE 21 102 103 #define HP_MASK_WWAN_ON_AIR 0x1000000 104 #define HP_MASK_BLUETOOTH_ON_AIR 0x10000 105 #define HP_MASK_WLAN_ON_AIR 0x100 106 #define HP_MASK_WWAN_RADIO 0x8000000 107 #define HP_MASK_BLUETOOTH_RADIO 0x80000 108 #define HP_MASK_WLAN_RADIO 0x800 109 #define HP_MASK_WWAN_ENABLED 0x2000000 110 #define HP_MASK_BLUETOOTH_ENABLED 0x20000 111 #define HP_MASK_WLAN_ENABLED 0x200 112 113 #define ACPI_HP_EVENT_DOCK 0x01 114 #define ACPI_HP_EVENT_PARK_HDD 0x02 115 #define ACPI_HP_EVENT_SMART_ADAPTER 0x03 116 #define ACPI_HP_EVENT_BEZEL_BUTTON 0x04 117 #define ACPI_HP_EVENT_WIRELESS 0x05 118 #define ACPI_HP_EVENT_CPU_BATTERY_THROTTLE 0x06 119 #define ACPI_HP_EVENT_LOCK_SWITCH 0x07 120 #define ACPI_HP_EVENT_LID_SWITCH 0x08 121 #define ACPI_HP_EVENT_SCREEN_ROTATION 0x09 122 #define ACPI_HP_EVENT_COOLSENSE_SYSTEM_MOBILE 0x0A 123 #define ACPI_HP_EVENT_COOLSENSE_SYSTEM_HOT 0x0B 124 #define ACPI_HP_EVENT_PROXIMITY_SENSOR 0x0C 125 #define ACPI_HP_EVENT_BACKLIT_KB_BRIGHTNESS 0x0D 126 #define ACPI_HP_EVENT_PEAKSHIFT_PERIOD 0x0F 127 #define ACPI_HP_EVENT_BATTERY_CHARGE_PERIOD 0x10 128 129 #define ACPI_HP_CMI_DETAIL_PATHS 0x01 130 #define ACPI_HP_CMI_DETAIL_ENUMS 0x02 131 #define ACPI_HP_CMI_DETAIL_FLAGS 0x04 132 #define ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE 0x08 133 134 #define ACPI_HP_WMI_RET_WRONG_SIGNATURE 0x02 135 #define ACPI_HP_WMI_RET_UNKNOWN_COMMAND 0x03 136 #define ACPI_HP_WMI_RET_UNKNOWN_CMDTYPE 0x04 137 #define ACPI_HP_WMI_RET_INVALID_PARAMETERS 0x05 138 139 struct acpi_hp_inst_seq_pair { 140 UINT32 sequence; /* sequence number as suggested by cmi bios */ 141 UINT8 instance; /* object instance on guid */ 142 }; 143 144 struct acpi_hp_softc { 145 device_t dev; 146 device_t wmi_dev; 147 int has_notify; /* notification GUID found */ 148 int has_cmi; /* CMI GUID found */ 149 int has_wireless; /* Wireless command found */ 150 int cmi_detail; /* CMI detail level 151 (set by sysctl) */ 152 int verbose; /* add debug output */ 153 int wlan_enable_if_radio_on; /* set by sysctl */ 154 int wlan_disable_if_radio_off; /* set by sysctl */ 155 int bluetooth_enable_if_radio_on; /* set by sysctl */ 156 int bluetooth_disable_if_radio_off; /* set by sysctl */ 157 int wwan_enable_if_radio_on; /* set by sysctl */ 158 int wwan_disable_if_radio_off; /* set by sysctl */ 159 int was_wlan_on_air; /* last known WLAN 160 on air status */ 161 int was_bluetooth_on_air; /* last known BT 162 on air status */ 163 int was_wwan_on_air; /* last known WWAN 164 on air status */ 165 struct sysctl_ctx_list *sysctl_ctx; 166 struct sysctl_oid *sysctl_tree; 167 struct cdev *hpcmi_dev_t; /* hpcmi device handle */ 168 struct sbuf hpcmi_sbuf; /* /dev/hpcmi output sbuf */ 169 pid_t hpcmi_open_pid; /* pid operating on 170 /dev/hpcmi */ 171 int hpcmi_bufptr; /* current pointer position 172 in /dev/hpcmi output buffer 173 */ 174 int cmi_order_size; /* size of cmi_order list */ 175 struct acpi_hp_inst_seq_pair cmi_order[128]; /* list of CMI 176 instances ordered by BIOS suggested sequence */ 177 }; 178 179 static struct { 180 char *name; 181 int method; 182 char *description; 183 int flag_rdonly; 184 } acpi_hp_sysctls[] = { 185 { 186 .name = "wlan_enabled", 187 .method = ACPI_HP_METHOD_WLAN_ENABLED, 188 .description = "Enable/Disable WLAN (WiFi)", 189 }, 190 { 191 .name = "wlan_radio", 192 .method = ACPI_HP_METHOD_WLAN_RADIO, 193 .description = "WLAN radio status", 194 .flag_rdonly = 1 195 }, 196 { 197 .name = "wlan_on_air", 198 .method = ACPI_HP_METHOD_WLAN_ON_AIR, 199 .description = "WLAN radio ready to use (enabled and radio)", 200 .flag_rdonly = 1 201 }, 202 { 203 .name = "wlan_enable_if_radio_on", 204 .method = ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON, 205 .description = "Enable WLAN if radio is turned on", 206 }, 207 { 208 .name = "wlan_disable_if_radio_off", 209 .method = ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF, 210 .description = "Disable WLAN if radio is turned off", 211 }, 212 { 213 .name = "bt_enabled", 214 .method = ACPI_HP_METHOD_BLUETOOTH_ENABLED, 215 .description = "Enable/Disable Bluetooth", 216 }, 217 { 218 .name = "bt_radio", 219 .method = ACPI_HP_METHOD_BLUETOOTH_RADIO, 220 .description = "Bluetooth radio status", 221 .flag_rdonly = 1 222 }, 223 { 224 .name = "bt_on_air", 225 .method = ACPI_HP_METHOD_BLUETOOTH_ON_AIR, 226 .description = "Bluetooth radio ready to use" 227 " (enabled and radio)", 228 .flag_rdonly = 1 229 }, 230 { 231 .name = "bt_enable_if_radio_on", 232 .method = ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON, 233 .description = "Enable bluetooth if radio is turned on", 234 }, 235 { 236 .name = "bt_disable_if_radio_off", 237 .method = ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF, 238 .description = "Disable bluetooth if radio is turned off", 239 }, 240 { 241 .name = "wwan_enabled", 242 .method = ACPI_HP_METHOD_WWAN_ENABLED, 243 .description = "Enable/Disable WWAN (UMTS)", 244 }, 245 { 246 .name = "wwan_radio", 247 .method = ACPI_HP_METHOD_WWAN_RADIO, 248 .description = "WWAN radio status", 249 .flag_rdonly = 1 250 }, 251 { 252 .name = "wwan_on_air", 253 .method = ACPI_HP_METHOD_WWAN_ON_AIR, 254 .description = "WWAN radio ready to use (enabled and radio)", 255 .flag_rdonly = 1 256 }, 257 { 258 .name = "wwan_enable_if_radio_on", 259 .method = ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON, 260 .description = "Enable WWAN if radio is turned on", 261 }, 262 { 263 .name = "wwan_disable_if_radio_off", 264 .method = ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF, 265 .description = "Disable WWAN if radio is turned off", 266 }, 267 { 268 .name = "als_enabled", 269 .method = ACPI_HP_METHOD_ALS, 270 .description = "Enable/Disable ALS (Ambient light sensor)", 271 }, 272 { 273 .name = "display", 274 .method = ACPI_HP_METHOD_DISPLAY, 275 .description = "Display status", 276 .flag_rdonly = 1 277 }, 278 { 279 .name = "hdd_temperature", 280 .method = ACPI_HP_METHOD_HDDTEMP, 281 .description = "HDD temperature", 282 .flag_rdonly = 1 283 }, 284 { 285 .name = "is_docked", 286 .method = ACPI_HP_METHOD_DOCK, 287 .description = "Docking station status", 288 .flag_rdonly = 1 289 }, 290 { 291 .name = "cmi_detail", 292 .method = ACPI_HP_METHOD_CMI_DETAIL, 293 .description = "Details shown in CMI output " 294 "(cat /dev/hpcmi)", 295 }, 296 { 297 .name = "verbose", 298 .method = ACPI_HP_METHOD_VERBOSE, 299 .description = "Verbosity level", 300 }, 301 { NULL, 0, NULL, 0 } 302 }; 303 304 ACPI_SERIAL_DECL(hp, "HP ACPI-WMI Mapping"); 305 306 static void acpi_hp_identify(driver_t *driver, device_t parent); 307 static int acpi_hp_probe(device_t dev); 308 static int acpi_hp_attach(device_t dev); 309 static int acpi_hp_detach(device_t dev); 310 311 static void acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc* sc); 312 static int acpi_hp_sysctl(SYSCTL_HANDLER_ARGS); 313 static int acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, 314 int arg, int oldarg); 315 static int acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method); 316 static int acpi_hp_exec_wmi_command(device_t wmi_dev, int command, 317 int is_write, int val, int *retval); 318 static void acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context); 319 static int acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, 320 UINT8 instance, char* outbuf, size_t outsize, 321 UINT32* sequence, int detail); 322 static void acpi_hp_hex_decode(char* buffer); 323 324 static d_open_t acpi_hp_hpcmi_open; 325 static d_close_t acpi_hp_hpcmi_close; 326 static d_read_t acpi_hp_hpcmi_read; 327 328 /* handler /dev/hpcmi device */ 329 static struct cdevsw hpcmi_cdevsw = { 330 .d_version = D_VERSION, 331 .d_open = acpi_hp_hpcmi_open, 332 .d_close = acpi_hp_hpcmi_close, 333 .d_read = acpi_hp_hpcmi_read, 334 .d_name = "hpcmi", 335 }; 336 337 static device_method_t acpi_hp_methods[] = { 338 DEVMETHOD(device_identify, acpi_hp_identify), 339 DEVMETHOD(device_probe, acpi_hp_probe), 340 DEVMETHOD(device_attach, acpi_hp_attach), 341 DEVMETHOD(device_detach, acpi_hp_detach), 342 343 DEVMETHOD_END 344 }; 345 346 static driver_t acpi_hp_driver = { 347 "acpi_hp", 348 acpi_hp_methods, 349 sizeof(struct acpi_hp_softc), 350 }; 351 352 DRIVER_MODULE(acpi_hp, acpi_wmi, acpi_hp_driver, 0, 0); 353 MODULE_DEPEND(acpi_hp, acpi_wmi, 1, 1, 1); 354 MODULE_DEPEND(acpi_hp, acpi, 1, 1, 1); 355 356 static void 357 acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc *sc) 358 { 359 int res; 360 int wireless; 361 int new_wlan_status; 362 int new_bluetooth_status; 363 int new_wwan_status; 364 365 res = acpi_hp_exec_wmi_command(sc->wmi_dev, 366 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &wireless); 367 if (res != 0) { 368 device_printf(sc->wmi_dev, "Wireless command error %x\n", res); 369 return; 370 } 371 new_wlan_status = -1; 372 new_bluetooth_status = -1; 373 new_wwan_status = -1; 374 375 if (sc->verbose) 376 device_printf(sc->wmi_dev, "Wireless status is %x\n", wireless); 377 if (sc->wlan_disable_if_radio_off && !(wireless & HP_MASK_WLAN_RADIO) 378 && (wireless & HP_MASK_WLAN_ENABLED)) { 379 acpi_hp_exec_wmi_command(sc->wmi_dev, 380 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x100, NULL); 381 new_wlan_status = 0; 382 } 383 else if (sc->wlan_enable_if_radio_on && (wireless & HP_MASK_WLAN_RADIO) 384 && !(wireless & HP_MASK_WLAN_ENABLED)) { 385 acpi_hp_exec_wmi_command(sc->wmi_dev, 386 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x101, NULL); 387 new_wlan_status = 1; 388 } 389 if (sc->bluetooth_disable_if_radio_off && 390 !(wireless & HP_MASK_BLUETOOTH_RADIO) && 391 (wireless & HP_MASK_BLUETOOTH_ENABLED)) { 392 acpi_hp_exec_wmi_command(sc->wmi_dev, 393 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x200, NULL); 394 new_bluetooth_status = 0; 395 } 396 else if (sc->bluetooth_enable_if_radio_on && 397 (wireless & HP_MASK_BLUETOOTH_RADIO) && 398 !(wireless & HP_MASK_BLUETOOTH_ENABLED)) { 399 acpi_hp_exec_wmi_command(sc->wmi_dev, 400 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x202, NULL); 401 new_bluetooth_status = 1; 402 } 403 if (sc->wwan_disable_if_radio_off && 404 !(wireless & HP_MASK_WWAN_RADIO) && 405 (wireless & HP_MASK_WWAN_ENABLED)) { 406 acpi_hp_exec_wmi_command(sc->wmi_dev, 407 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x400, NULL); 408 new_wwan_status = 0; 409 } 410 else if (sc->wwan_enable_if_radio_on && 411 (wireless & HP_MASK_WWAN_RADIO) && 412 !(wireless & HP_MASK_WWAN_ENABLED)) { 413 acpi_hp_exec_wmi_command(sc->wmi_dev, 414 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x404, NULL); 415 new_wwan_status = 1; 416 } 417 418 if (new_wlan_status == -1) { 419 new_wlan_status = (wireless & HP_MASK_WLAN_ON_AIR); 420 if ((new_wlan_status?1:0) != sc->was_wlan_on_air) { 421 sc->was_wlan_on_air = sc->was_wlan_on_air?0:1; 422 if (sc->verbose) 423 device_printf(sc->wmi_dev, 424 "WLAN on air changed to %i " 425 "(new_wlan_status is %i)\n", 426 sc->was_wlan_on_air, new_wlan_status); 427 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 428 0xc0+sc->was_wlan_on_air); 429 } 430 } 431 if (new_bluetooth_status == -1) { 432 new_bluetooth_status = (wireless & HP_MASK_BLUETOOTH_ON_AIR); 433 if ((new_bluetooth_status?1:0) != sc->was_bluetooth_on_air) { 434 sc->was_bluetooth_on_air = sc->was_bluetooth_on_air? 435 0:1; 436 if (sc->verbose) 437 device_printf(sc->wmi_dev, 438 "BLUETOOTH on air changed" 439 " to %i (new_bluetooth_status is %i)\n", 440 sc->was_bluetooth_on_air, 441 new_bluetooth_status); 442 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 443 0xd0+sc->was_bluetooth_on_air); 444 } 445 } 446 if (new_wwan_status == -1) { 447 new_wwan_status = (wireless & HP_MASK_WWAN_ON_AIR); 448 if ((new_wwan_status?1:0) != sc->was_wwan_on_air) { 449 sc->was_wwan_on_air = sc->was_wwan_on_air?0:1; 450 if (sc->verbose) 451 device_printf(sc->wmi_dev, 452 "WWAN on air changed to %i" 453 " (new_wwan_status is %i)\n", 454 sc->was_wwan_on_air, new_wwan_status); 455 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 456 0xe0+sc->was_wwan_on_air); 457 } 458 } 459 } 460 461 static void 462 acpi_hp_identify(driver_t *driver, device_t parent) 463 { 464 465 /* Don't do anything if driver is disabled. */ 466 if (acpi_disabled("hp")) 467 return; 468 469 /* Add only a single device instance. */ 470 if (device_find_child(parent, "acpi_hp", -1) != NULL) 471 return; 472 473 /* Check BIOS GUID to see whether system is compatible. */ 474 if (!ACPI_WMI_PROVIDES_GUID_STRING(parent, 475 ACPI_HP_WMI_BIOS_GUID)) 476 return; 477 478 if (BUS_ADD_CHILD(parent, 0, "acpi_hp", -1) == NULL) 479 device_printf(parent, "add acpi_hp child failed\n"); 480 } 481 482 static int 483 acpi_hp_probe(device_t dev) 484 { 485 486 device_set_desc(dev, "HP ACPI-WMI Mapping"); 487 return (0); 488 } 489 490 static int 491 acpi_hp_attach(device_t dev) 492 { 493 struct acpi_hp_softc *sc; 494 int arg; 495 496 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 497 498 sc = device_get_softc(dev); 499 sc->dev = dev; 500 sc->has_notify = 0; 501 sc->has_cmi = 0; 502 sc->bluetooth_enable_if_radio_on = 0; 503 sc->bluetooth_disable_if_radio_off = 0; 504 sc->wlan_enable_if_radio_on = 0; 505 sc->wlan_disable_if_radio_off = 0; 506 sc->wlan_enable_if_radio_on = 0; 507 sc->wlan_disable_if_radio_off = 0; 508 sc->was_wlan_on_air = 0; 509 sc->was_bluetooth_on_air = 0; 510 sc->was_wwan_on_air = 0; 511 sc->cmi_detail = 0; 512 sc->cmi_order_size = -1; 513 sc->verbose = bootverbose; 514 memset(sc->cmi_order, 0, sizeof(sc->cmi_order)); 515 516 sc->wmi_dev = device_get_parent(dev); 517 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 518 ACPI_HP_WMI_BIOS_GUID)) { 519 device_printf(dev, 520 "WMI device does not provide the HP BIOS GUID\n"); 521 return (EINVAL); 522 } 523 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 524 ACPI_HP_WMI_EVENT_GUID)) { 525 device_printf(dev, 526 "HP event GUID detected, installing event handler\n"); 527 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev, 528 ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) { 529 device_printf(dev, 530 "Could not install notification handler!\n"); 531 } 532 else { 533 sc->has_notify = 1; 534 } 535 } 536 if ((sc->has_cmi = 537 ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID) 538 )) { 539 device_printf(dev, "HP CMI GUID detected\n"); 540 } 541 542 if (sc->has_cmi) { 543 sc->hpcmi_dev_t = make_dev(&hpcmi_cdevsw, 0, UID_ROOT, 544 GID_WHEEL, 0644, "hpcmi"); 545 sc->hpcmi_dev_t->si_drv1 = sc; 546 sc->hpcmi_open_pid = 0; 547 sc->hpcmi_bufptr = -1; 548 } 549 550 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 551 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, NULL) == 0) 552 sc->has_wireless = 1; 553 554 ACPI_SERIAL_BEGIN(hp); 555 556 sc->sysctl_ctx = device_get_sysctl_ctx(dev); 557 sc->sysctl_tree = device_get_sysctl_tree(dev); 558 for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) { 559 arg = 0; 560 if (((!sc->has_notify || !sc->has_wireless) && 561 (acpi_hp_sysctls[i].method == 562 ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON || 563 acpi_hp_sysctls[i].method == 564 ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF || 565 acpi_hp_sysctls[i].method == 566 ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON || 567 acpi_hp_sysctls[i].method == 568 ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF || 569 acpi_hp_sysctls[i].method == 570 ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON || 571 acpi_hp_sysctls[i].method == 572 ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) || 573 (arg = acpi_hp_sysctl_get(sc, 574 acpi_hp_sysctls[i].method)) < 0) { 575 continue; 576 } 577 if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) { 578 sc->was_wlan_on_air = arg; 579 } 580 else if (acpi_hp_sysctls[i].method == 581 ACPI_HP_METHOD_BLUETOOTH_ON_AIR) { 582 sc->was_bluetooth_on_air = arg; 583 } 584 else if (acpi_hp_sysctls[i].method == 585 ACPI_HP_METHOD_WWAN_ON_AIR) { 586 sc->was_wwan_on_air = arg; 587 } 588 589 if (acpi_hp_sysctls[i].flag_rdonly != 0) { 590 SYSCTL_ADD_PROC(sc->sysctl_ctx, 591 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 592 acpi_hp_sysctls[i].name, 593 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, 594 sc, i, acpi_hp_sysctl, "I", 595 acpi_hp_sysctls[i].description); 596 } else { 597 SYSCTL_ADD_PROC(sc->sysctl_ctx, 598 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 599 acpi_hp_sysctls[i].name, 600 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, 601 sc, i, acpi_hp_sysctl, "I", 602 acpi_hp_sysctls[i].description); 603 } 604 } 605 ACPI_SERIAL_END(hp); 606 607 return (0); 608 } 609 610 static int 611 acpi_hp_detach(device_t dev) 612 { 613 struct acpi_hp_softc *sc; 614 615 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 616 sc = device_get_softc(dev); 617 if (sc->has_cmi && sc->hpcmi_open_pid != 0) 618 return (EBUSY); 619 620 if (sc->has_notify) { 621 ACPI_WMI_REMOVE_EVENT_HANDLER(sc->wmi_dev, 622 ACPI_HP_WMI_EVENT_GUID); 623 } 624 625 if (sc->has_cmi) { 626 if (sc->hpcmi_bufptr != -1) { 627 sbuf_delete(&sc->hpcmi_sbuf); 628 sc->hpcmi_bufptr = -1; 629 } 630 sc->hpcmi_open_pid = 0; 631 destroy_dev(sc->hpcmi_dev_t); 632 } 633 634 return (0); 635 } 636 637 static int 638 acpi_hp_sysctl(SYSCTL_HANDLER_ARGS) 639 { 640 struct acpi_hp_softc *sc; 641 int arg; 642 int oldarg; 643 int error = 0; 644 int function; 645 int method; 646 647 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 648 649 sc = (struct acpi_hp_softc *)oidp->oid_arg1; 650 function = oidp->oid_arg2; 651 method = acpi_hp_sysctls[function].method; 652 653 ACPI_SERIAL_BEGIN(hp); 654 arg = acpi_hp_sysctl_get(sc, method); 655 oldarg = arg; 656 error = sysctl_handle_int(oidp, &arg, 0, req); 657 if (!error && req->newptr != NULL) { 658 error = acpi_hp_sysctl_set(sc, method, arg, oldarg); 659 } 660 ACPI_SERIAL_END(hp); 661 662 return (error); 663 } 664 665 static int 666 acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method) 667 { 668 int val = 0; 669 670 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 671 ACPI_SERIAL_ASSERT(hp); 672 673 switch (method) { 674 case ACPI_HP_METHOD_WLAN_ENABLED: 675 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 676 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 677 return (-EINVAL); 678 val = ((val & HP_MASK_WLAN_ENABLED) != 0); 679 break; 680 case ACPI_HP_METHOD_WLAN_RADIO: 681 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 682 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 683 return (-EINVAL); 684 val = ((val & HP_MASK_WLAN_RADIO) != 0); 685 break; 686 case ACPI_HP_METHOD_WLAN_ON_AIR: 687 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 688 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 689 return (-EINVAL); 690 val = ((val & HP_MASK_WLAN_ON_AIR) != 0); 691 break; 692 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 693 val = sc->wlan_enable_if_radio_on; 694 break; 695 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 696 val = sc->wlan_disable_if_radio_off; 697 break; 698 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 699 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 700 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 701 return (-EINVAL); 702 val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0); 703 break; 704 case ACPI_HP_METHOD_BLUETOOTH_RADIO: 705 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 706 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 707 return (-EINVAL); 708 val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0); 709 break; 710 case ACPI_HP_METHOD_BLUETOOTH_ON_AIR: 711 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 712 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 713 return (-EINVAL); 714 val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0); 715 break; 716 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 717 val = sc->bluetooth_enable_if_radio_on; 718 break; 719 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 720 val = sc->bluetooth_disable_if_radio_off; 721 break; 722 case ACPI_HP_METHOD_WWAN_ENABLED: 723 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 724 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 725 return (-EINVAL); 726 val = ((val & HP_MASK_WWAN_ENABLED) != 0); 727 break; 728 case ACPI_HP_METHOD_WWAN_RADIO: 729 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 730 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 731 return (-EINVAL); 732 val = ((val & HP_MASK_WWAN_RADIO) != 0); 733 break; 734 case ACPI_HP_METHOD_WWAN_ON_AIR: 735 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 736 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 737 return (-EINVAL); 738 val = ((val & HP_MASK_WWAN_ON_AIR) != 0); 739 break; 740 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 741 val = sc->wwan_enable_if_radio_on; 742 break; 743 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 744 val = sc->wwan_disable_if_radio_off; 745 break; 746 case ACPI_HP_METHOD_ALS: 747 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 748 ACPI_HP_WMI_ALS_COMMAND, 0, 0, &val)) 749 return (-EINVAL); 750 break; 751 case ACPI_HP_METHOD_DISPLAY: 752 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 753 ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0, &val)) 754 return (-EINVAL); 755 break; 756 case ACPI_HP_METHOD_HDDTEMP: 757 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 758 ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0, &val)) 759 return (-EINVAL); 760 break; 761 case ACPI_HP_METHOD_DOCK: 762 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 763 ACPI_HP_WMI_DOCK_COMMAND, 0, 0, &val)) 764 return (-EINVAL); 765 break; 766 case ACPI_HP_METHOD_CMI_DETAIL: 767 val = sc->cmi_detail; 768 break; 769 case ACPI_HP_METHOD_VERBOSE: 770 val = sc->verbose; 771 break; 772 } 773 774 return (val); 775 } 776 777 static int 778 acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg) 779 { 780 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 781 ACPI_SERIAL_ASSERT(hp); 782 783 if (method != ACPI_HP_METHOD_CMI_DETAIL && 784 method != ACPI_HP_METHOD_VERBOSE) 785 arg = arg?1:0; 786 787 if (arg != oldarg) { 788 switch (method) { 789 case ACPI_HP_METHOD_WLAN_ENABLED: 790 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 791 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 792 arg?0x101:0x100, NULL)) 793 return (-EINVAL); 794 break; 795 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 796 sc->wlan_enable_if_radio_on = arg; 797 acpi_hp_evaluate_auto_on_off(sc); 798 break; 799 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 800 sc->wlan_disable_if_radio_off = arg; 801 acpi_hp_evaluate_auto_on_off(sc); 802 break; 803 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 804 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 805 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 806 arg?0x202:0x200, NULL)) 807 return (-EINVAL); 808 break; 809 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 810 sc->bluetooth_enable_if_radio_on = arg; 811 acpi_hp_evaluate_auto_on_off(sc); 812 break; 813 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 814 sc->bluetooth_disable_if_radio_off = arg?1:0; 815 acpi_hp_evaluate_auto_on_off(sc); 816 break; 817 case ACPI_HP_METHOD_WWAN_ENABLED: 818 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 819 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 820 arg?0x404:0x400, NULL)) 821 return (-EINVAL); 822 break; 823 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 824 sc->wwan_enable_if_radio_on = arg?1:0; 825 acpi_hp_evaluate_auto_on_off(sc); 826 break; 827 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 828 sc->wwan_disable_if_radio_off = arg?1:0; 829 acpi_hp_evaluate_auto_on_off(sc); 830 break; 831 case ACPI_HP_METHOD_ALS: 832 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 833 ACPI_HP_WMI_ALS_COMMAND, 1, arg?1:0, NULL)) 834 return (-EINVAL); 835 break; 836 case ACPI_HP_METHOD_CMI_DETAIL: 837 sc->cmi_detail = arg; 838 if ((arg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) != 839 (oldarg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE)) { 840 sc->cmi_order_size = -1; 841 } 842 break; 843 case ACPI_HP_METHOD_VERBOSE: 844 sc->verbose = arg; 845 break; 846 } 847 } 848 849 return (0); 850 } 851 852 static __inline void 853 acpi_hp_free_buffer(ACPI_BUFFER* buf) { 854 if (buf && buf->Pointer) { 855 AcpiOsFree(buf->Pointer); 856 } 857 } 858 859 static void 860 acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context) 861 { 862 device_t dev = context; 863 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 864 865 struct acpi_hp_softc *sc = device_get_softc(dev); 866 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL }; 867 ACPI_OBJECT *obj; 868 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response); 869 obj = (ACPI_OBJECT*) response.Pointer; 870 if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) { 871 switch (*((UINT8 *) obj->Buffer.Pointer)) { 872 case ACPI_HP_EVENT_WIRELESS: 873 acpi_hp_evaluate_auto_on_off(sc); 874 break; 875 default: 876 if (sc->verbose) { 877 device_printf(sc->dev, "Event %02x\n", 878 *((UINT8 *) obj->Buffer.Pointer)); 879 } 880 break; 881 } 882 } 883 acpi_hp_free_buffer(&response); 884 } 885 886 static int 887 acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, 888 int val, int *retval) 889 { 890 UINT32 params[4+32] = { 0x55434553, is_write ? 2 : 1, 891 command, 4, val}; 892 UINT32* result; 893 ACPI_OBJECT *obj; 894 ACPI_BUFFER in = { sizeof(params), ¶ms }; 895 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 896 int res; 897 898 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID, 899 0, 0x3, &in, &out))) { 900 acpi_hp_free_buffer(&out); 901 return (-EINVAL); 902 } 903 obj = out.Pointer; 904 if (!obj || obj->Type != ACPI_TYPE_BUFFER) { 905 acpi_hp_free_buffer(&out); 906 return (-EINVAL); 907 } 908 result = (UINT32*) obj->Buffer.Pointer; 909 res = result[1]; 910 if (res == 0 && retval != NULL) 911 *retval = result[2]; 912 acpi_hp_free_buffer(&out); 913 914 return (res); 915 } 916 917 static __inline char* 918 acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) { 919 int length; 920 921 dst[0] = 0; 922 if (obj->Type == ACPI_TYPE_STRING) { 923 length = obj->String.Length+1; 924 if (length > size) { 925 length = size - 1; 926 } 927 strlcpy(dst, obj->String.Pointer, length); 928 acpi_hp_hex_decode(dst); 929 } 930 931 return (dst); 932 } 933 934 /* 935 * Read BIOS Setting block in instance "instance". 936 * The block returned is ACPI_TYPE_PACKAGE which should contain the following 937 * elements: 938 * Index Meaning 939 * 0 Setting Name [string] 940 * 1 Value (comma separated, asterisk marks the current value) [string] 941 * 2 Path within the bios hierarchy [string] 942 * 3 IsReadOnly [int] 943 * 4 DisplayInUI [int] 944 * 5 RequiresPhysicalPresence [int] 945 * 6 Sequence for ordering within the bios settings (absolute) [int] 946 * 7 Length of prerequisites array [int] 947 * 8..8+[7] PrerequisiteN [string] 948 * 9+[7] Current value (in case of enum) [string] / Array length [int] 949 * 10+[7] Enum length [int] / Array values 950 * 11+[7]ff Enum value at index x [string] 951 */ 952 static int 953 acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance, 954 char* outbuf, size_t outsize, UINT32* sequence, int detail) 955 { 956 ACPI_OBJECT *obj; 957 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 958 int i; 959 int outlen; 960 int has_enums = 0; 961 int valuebase = 0; 962 char string_buffer[255]; 963 int enumbase; 964 965 outlen = 0; 966 outbuf[0] = 0; 967 if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) { 968 acpi_hp_free_buffer(&out); 969 return (-EINVAL); 970 } 971 obj = out.Pointer; 972 if (!obj || obj->Type != ACPI_TYPE_PACKAGE) { 973 acpi_hp_free_buffer(&out); 974 return (-EINVAL); 975 } 976 977 /* Check if first 6 bytes matches our expectations. */ 978 if (obj->Package.Count < 8 || 979 obj->Package.Elements[0].Type != ACPI_TYPE_STRING || 980 obj->Package.Elements[1].Type != ACPI_TYPE_STRING || 981 obj->Package.Elements[2].Type != ACPI_TYPE_STRING || 982 obj->Package.Elements[3].Type != ACPI_TYPE_INTEGER || 983 obj->Package.Elements[4].Type != ACPI_TYPE_INTEGER || 984 obj->Package.Elements[5].Type != ACPI_TYPE_INTEGER || 985 obj->Package.Elements[6].Type != ACPI_TYPE_INTEGER || 986 obj->Package.Elements[7].Type != ACPI_TYPE_INTEGER) { 987 acpi_hp_free_buffer(&out); 988 return (-EINVAL); 989 } 990 991 /* Skip prerequisites and optionally array. */ 992 valuebase = 8 + obj->Package.Elements[7].Integer.Value; 993 if (obj->Package.Count <= valuebase) { 994 acpi_hp_free_buffer(&out); 995 return (-EINVAL); 996 } 997 if (obj->Package.Elements[valuebase].Type == ACPI_TYPE_INTEGER) 998 valuebase += 1 + obj->Package.Elements[valuebase].Integer.Value; 999 1000 /* Check if we have value and enum. */ 1001 if (obj->Package.Count <= valuebase + 1 || 1002 obj->Package.Elements[valuebase].Type != ACPI_TYPE_STRING || 1003 obj->Package.Elements[valuebase+1].Type != ACPI_TYPE_INTEGER) { 1004 acpi_hp_free_buffer(&out); 1005 return (-EINVAL); 1006 } 1007 enumbase = valuebase + 1; 1008 if (obj->Package.Count <= valuebase + 1009 obj->Package.Elements[enumbase].Integer.Value) { 1010 acpi_hp_free_buffer(&out); 1011 return (-EINVAL); 1012 } 1013 1014 if (detail & ACPI_HP_CMI_DETAIL_PATHS) { 1015 strlcat(outbuf, acpi_hp_get_string_from_object( 1016 &obj->Package.Elements[2], 1017 string_buffer, sizeof(string_buffer)), outsize); 1018 outlen += 48; 1019 while (strlen(outbuf) < outlen) 1020 strlcat(outbuf, " ", outsize); 1021 } 1022 strlcat(outbuf, acpi_hp_get_string_from_object( 1023 &obj->Package.Elements[0], 1024 string_buffer, sizeof(string_buffer)), outsize); 1025 outlen += 43; 1026 while (strlen(outbuf) < outlen) 1027 strlcat(outbuf, " ", outsize); 1028 strlcat(outbuf, acpi_hp_get_string_from_object( 1029 &obj->Package.Elements[valuebase], 1030 string_buffer, sizeof(string_buffer)), outsize); 1031 outlen += 21; 1032 while (strlen(outbuf) < outlen) 1033 strlcat(outbuf, " ", outsize); 1034 for (i = 0; i < strlen(outbuf); ++i) 1035 if (outbuf[i] == '\\') 1036 outbuf[i] = '/'; 1037 if (detail & ACPI_HP_CMI_DETAIL_ENUMS) { 1038 for (i = enumbase + 1; i < enumbase + 1 + 1039 obj->Package.Elements[enumbase].Integer.Value; ++i) { 1040 acpi_hp_get_string_from_object( 1041 &obj->Package.Elements[i], 1042 string_buffer, sizeof(string_buffer)); 1043 if (strlen(string_buffer) > 1 || 1044 (strlen(string_buffer) == 1 && 1045 string_buffer[0] != ' ')) { 1046 if (has_enums) 1047 strlcat(outbuf, "/", outsize); 1048 else 1049 strlcat(outbuf, " (", outsize); 1050 strlcat(outbuf, string_buffer, outsize); 1051 has_enums = 1; 1052 } 1053 } 1054 } 1055 if (has_enums) 1056 strlcat(outbuf, ")", outsize); 1057 if (detail & ACPI_HP_CMI_DETAIL_FLAGS) { 1058 strlcat(outbuf, obj->Package.Elements[3].Integer.Value ? 1059 " [ReadOnly]" : "", outsize); 1060 strlcat(outbuf, obj->Package.Elements[4].Integer.Value ? 1061 "" : " [NOUI]", outsize); 1062 strlcat(outbuf, obj->Package.Elements[5].Integer.Value ? 1063 " [RPP]" : "", outsize); 1064 } 1065 *sequence = (UINT32) obj->Package.Elements[6].Integer.Value; 1066 acpi_hp_free_buffer(&out); 1067 1068 return (0); 1069 } 1070 1071 /* 1072 * Convert given two digit hex string (hexin) to an UINT8 referenced 1073 * by byteout. 1074 * Return != 0 if the was a problem (invalid input) 1075 */ 1076 static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout) 1077 { 1078 unsigned int hi; 1079 unsigned int lo; 1080 1081 hi = hexin[0]; 1082 lo = hexin[1]; 1083 if ('0' <= hi && hi <= '9') 1084 hi -= '0'; 1085 else if ('A' <= hi && hi <= 'F') 1086 hi -= ('A' - 10); 1087 else if ('a' <= hi && hi <= 'f') 1088 hi -= ('a' - 10); 1089 else 1090 return (1); 1091 if ('0' <= lo && lo <= '9') 1092 lo -= '0'; 1093 else if ('A' <= lo && lo <= 'F') 1094 lo -= ('A' - 10); 1095 else if ('a' <= lo && lo <= 'f') 1096 lo -= ('a' - 10); 1097 else 1098 return (1); 1099 *byteout = (hi << 4) + lo; 1100 1101 return (0); 1102 } 1103 1104 static void 1105 acpi_hp_hex_decode(char* buffer) 1106 { 1107 int i; 1108 int length = strlen(buffer); 1109 UINT8 *uin; 1110 UINT8 uout; 1111 1112 if (rounddown((int)length, 2) == length || length < 10) 1113 return; 1114 1115 for (i = 0; i<length; ++i) { 1116 if (!((i+1)%3)) { 1117 if (buffer[i] != ' ') 1118 return; 1119 } 1120 else 1121 if (!((buffer[i] >= '0' && buffer[i] <= '9') || 1122 (buffer[i] >= 'A' && buffer[i] <= 'F'))) 1123 return; 1124 } 1125 1126 for (i = 0; i<length; i += 3) { 1127 uin = &buffer[i]; 1128 uout = 0; 1129 acpi_hp_hex_to_int(uin, &uout); 1130 buffer[i/3] = (char) uout; 1131 } 1132 buffer[(length+1)/3] = 0; 1133 } 1134 1135 /* 1136 * open hpcmi device 1137 */ 1138 static int 1139 acpi_hp_hpcmi_open(struct cdev* dev, int flags, int mode, struct thread *td) 1140 { 1141 struct acpi_hp_softc *sc; 1142 int ret; 1143 1144 if (dev == NULL || dev->si_drv1 == NULL) 1145 return (EBADF); 1146 sc = dev->si_drv1; 1147 1148 ACPI_SERIAL_BEGIN(hp); 1149 if (sc->hpcmi_open_pid != 0) { 1150 ret = EBUSY; 1151 } 1152 else { 1153 if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND) 1154 == NULL) { 1155 ret = ENXIO; 1156 } else { 1157 sc->hpcmi_open_pid = td->td_proc->p_pid; 1158 sc->hpcmi_bufptr = 0; 1159 ret = 0; 1160 } 1161 } 1162 ACPI_SERIAL_END(hp); 1163 1164 return (ret); 1165 } 1166 1167 /* 1168 * close hpcmi device 1169 */ 1170 static int 1171 acpi_hp_hpcmi_close(struct cdev* dev, int flags, int mode, struct thread *td) 1172 { 1173 struct acpi_hp_softc *sc; 1174 int ret; 1175 1176 if (dev == NULL || dev->si_drv1 == NULL) 1177 return (EBADF); 1178 sc = dev->si_drv1; 1179 1180 ACPI_SERIAL_BEGIN(hp); 1181 if (sc->hpcmi_open_pid == 0) { 1182 ret = EBADF; 1183 } 1184 else { 1185 if (sc->hpcmi_bufptr != -1) { 1186 sbuf_delete(&sc->hpcmi_sbuf); 1187 sc->hpcmi_bufptr = -1; 1188 } 1189 sc->hpcmi_open_pid = 0; 1190 ret = 0; 1191 } 1192 ACPI_SERIAL_END(hp); 1193 1194 return (ret); 1195 } 1196 1197 /* 1198 * Read from hpcmi bios information 1199 */ 1200 static int 1201 acpi_hp_hpcmi_read(struct cdev *dev, struct uio *buf, int flag) 1202 { 1203 struct acpi_hp_softc *sc; 1204 int pos, i, l, ret; 1205 UINT8 instance; 1206 UINT8 maxInstance; 1207 UINT32 sequence; 1208 char line[1025]; 1209 1210 if (dev == NULL || dev->si_drv1 == NULL) 1211 return (EBADF); 1212 sc = dev->si_drv1; 1213 1214 ACPI_SERIAL_BEGIN(hp); 1215 if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid 1216 || sc->hpcmi_bufptr == -1) { 1217 ret = EBADF; 1218 } 1219 else { 1220 if (!sbuf_done(&sc->hpcmi_sbuf)) { 1221 if (sc->cmi_order_size < 0) { 1222 maxInstance = sc->has_cmi; 1223 if (!(sc->cmi_detail & 1224 ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) && 1225 maxInstance > 0) { 1226 maxInstance--; 1227 } 1228 sc->cmi_order_size = 0; 1229 for (instance = 0; instance < maxInstance; 1230 ++instance) { 1231 if (acpi_hp_get_cmi_block(sc->wmi_dev, 1232 ACPI_HP_WMI_CMI_GUID, instance, 1233 line, sizeof(line), &sequence, 1234 sc->cmi_detail)) { 1235 instance = maxInstance; 1236 } 1237 else { 1238 pos = sc->cmi_order_size; 1239 for (i=0; 1240 i<sc->cmi_order_size && i<127; 1241 ++i) { 1242 if (sc->cmi_order[i].sequence > sequence) { 1243 pos = i; 1244 break; 1245 } 1246 } 1247 for (i=sc->cmi_order_size; 1248 i>pos; 1249 --i) { 1250 sc->cmi_order[i].sequence = 1251 sc->cmi_order[i-1].sequence; 1252 sc->cmi_order[i].instance = 1253 sc->cmi_order[i-1].instance; 1254 } 1255 sc->cmi_order[pos].sequence = 1256 sequence; 1257 sc->cmi_order[pos].instance = 1258 instance; 1259 sc->cmi_order_size++; 1260 } 1261 } 1262 } 1263 for (i=0; i<sc->cmi_order_size; ++i) { 1264 if (!acpi_hp_get_cmi_block(sc->wmi_dev, 1265 ACPI_HP_WMI_CMI_GUID, 1266 sc->cmi_order[i].instance, line, sizeof(line), 1267 &sequence, sc->cmi_detail)) { 1268 sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line); 1269 } 1270 } 1271 sbuf_finish(&sc->hpcmi_sbuf); 1272 } 1273 if (sbuf_len(&sc->hpcmi_sbuf) <= 0) { 1274 sbuf_delete(&sc->hpcmi_sbuf); 1275 sc->hpcmi_bufptr = -1; 1276 sc->hpcmi_open_pid = 0; 1277 ret = ENOMEM; 1278 } else { 1279 l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) - 1280 sc->hpcmi_bufptr); 1281 ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) + 1282 sc->hpcmi_bufptr, l, buf) : 0; 1283 sc->hpcmi_bufptr += l; 1284 } 1285 } 1286 ACPI_SERIAL_END(hp); 1287 1288 return (ret); 1289 } 1290