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 static devclass_t acpi_hp_devclass; 353 354 DRIVER_MODULE(acpi_hp, acpi_wmi, acpi_hp_driver, acpi_hp_devclass, 355 0, 0); 356 MODULE_DEPEND(acpi_hp, acpi_wmi, 1, 1, 1); 357 MODULE_DEPEND(acpi_hp, acpi, 1, 1, 1); 358 359 static void 360 acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc *sc) 361 { 362 int res; 363 int wireless; 364 int new_wlan_status; 365 int new_bluetooth_status; 366 int new_wwan_status; 367 368 res = acpi_hp_exec_wmi_command(sc->wmi_dev, 369 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &wireless); 370 if (res != 0) { 371 device_printf(sc->wmi_dev, "Wireless command error %x\n", res); 372 return; 373 } 374 new_wlan_status = -1; 375 new_bluetooth_status = -1; 376 new_wwan_status = -1; 377 378 if (sc->verbose) 379 device_printf(sc->wmi_dev, "Wireless status is %x\n", wireless); 380 if (sc->wlan_disable_if_radio_off && !(wireless & HP_MASK_WLAN_RADIO) 381 && (wireless & HP_MASK_WLAN_ENABLED)) { 382 acpi_hp_exec_wmi_command(sc->wmi_dev, 383 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x100, NULL); 384 new_wlan_status = 0; 385 } 386 else if (sc->wlan_enable_if_radio_on && (wireless & HP_MASK_WLAN_RADIO) 387 && !(wireless & HP_MASK_WLAN_ENABLED)) { 388 acpi_hp_exec_wmi_command(sc->wmi_dev, 389 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x101, NULL); 390 new_wlan_status = 1; 391 } 392 if (sc->bluetooth_disable_if_radio_off && 393 !(wireless & HP_MASK_BLUETOOTH_RADIO) && 394 (wireless & HP_MASK_BLUETOOTH_ENABLED)) { 395 acpi_hp_exec_wmi_command(sc->wmi_dev, 396 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x200, NULL); 397 new_bluetooth_status = 0; 398 } 399 else if (sc->bluetooth_enable_if_radio_on && 400 (wireless & HP_MASK_BLUETOOTH_RADIO) && 401 !(wireless & HP_MASK_BLUETOOTH_ENABLED)) { 402 acpi_hp_exec_wmi_command(sc->wmi_dev, 403 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x202, NULL); 404 new_bluetooth_status = 1; 405 } 406 if (sc->wwan_disable_if_radio_off && 407 !(wireless & HP_MASK_WWAN_RADIO) && 408 (wireless & HP_MASK_WWAN_ENABLED)) { 409 acpi_hp_exec_wmi_command(sc->wmi_dev, 410 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x400, NULL); 411 new_wwan_status = 0; 412 } 413 else if (sc->wwan_enable_if_radio_on && 414 (wireless & HP_MASK_WWAN_RADIO) && 415 !(wireless & HP_MASK_WWAN_ENABLED)) { 416 acpi_hp_exec_wmi_command(sc->wmi_dev, 417 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x404, NULL); 418 new_wwan_status = 1; 419 } 420 421 if (new_wlan_status == -1) { 422 new_wlan_status = (wireless & HP_MASK_WLAN_ON_AIR); 423 if ((new_wlan_status?1:0) != sc->was_wlan_on_air) { 424 sc->was_wlan_on_air = sc->was_wlan_on_air?0:1; 425 if (sc->verbose) 426 device_printf(sc->wmi_dev, 427 "WLAN on air changed to %i " 428 "(new_wlan_status is %i)\n", 429 sc->was_wlan_on_air, new_wlan_status); 430 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 431 0xc0+sc->was_wlan_on_air); 432 } 433 } 434 if (new_bluetooth_status == -1) { 435 new_bluetooth_status = (wireless & HP_MASK_BLUETOOTH_ON_AIR); 436 if ((new_bluetooth_status?1:0) != sc->was_bluetooth_on_air) { 437 sc->was_bluetooth_on_air = sc->was_bluetooth_on_air? 438 0:1; 439 if (sc->verbose) 440 device_printf(sc->wmi_dev, 441 "BLUETOOTH on air changed" 442 " to %i (new_bluetooth_status is %i)\n", 443 sc->was_bluetooth_on_air, 444 new_bluetooth_status); 445 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 446 0xd0+sc->was_bluetooth_on_air); 447 } 448 } 449 if (new_wwan_status == -1) { 450 new_wwan_status = (wireless & HP_MASK_WWAN_ON_AIR); 451 if ((new_wwan_status?1:0) != sc->was_wwan_on_air) { 452 sc->was_wwan_on_air = sc->was_wwan_on_air?0:1; 453 if (sc->verbose) 454 device_printf(sc->wmi_dev, 455 "WWAN on air changed to %i" 456 " (new_wwan_status is %i)\n", 457 sc->was_wwan_on_air, new_wwan_status); 458 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 459 0xe0+sc->was_wwan_on_air); 460 } 461 } 462 } 463 464 static void 465 acpi_hp_identify(driver_t *driver, device_t parent) 466 { 467 468 /* Don't do anything if driver is disabled. */ 469 if (acpi_disabled("hp")) 470 return; 471 472 /* Add only a single device instance. */ 473 if (device_find_child(parent, "acpi_hp", -1) != NULL) 474 return; 475 476 /* Check BIOS GUID to see whether system is compatible. */ 477 if (!ACPI_WMI_PROVIDES_GUID_STRING(parent, 478 ACPI_HP_WMI_BIOS_GUID)) 479 return; 480 481 if (BUS_ADD_CHILD(parent, 0, "acpi_hp", -1) == NULL) 482 device_printf(parent, "add acpi_hp child failed\n"); 483 } 484 485 static int 486 acpi_hp_probe(device_t dev) 487 { 488 489 device_set_desc(dev, "HP ACPI-WMI Mapping"); 490 return (0); 491 } 492 493 static int 494 acpi_hp_attach(device_t dev) 495 { 496 struct acpi_hp_softc *sc; 497 int arg; 498 499 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 500 501 sc = device_get_softc(dev); 502 sc->dev = dev; 503 sc->has_notify = 0; 504 sc->has_cmi = 0; 505 sc->bluetooth_enable_if_radio_on = 0; 506 sc->bluetooth_disable_if_radio_off = 0; 507 sc->wlan_enable_if_radio_on = 0; 508 sc->wlan_disable_if_radio_off = 0; 509 sc->wlan_enable_if_radio_on = 0; 510 sc->wlan_disable_if_radio_off = 0; 511 sc->was_wlan_on_air = 0; 512 sc->was_bluetooth_on_air = 0; 513 sc->was_wwan_on_air = 0; 514 sc->cmi_detail = 0; 515 sc->cmi_order_size = -1; 516 sc->verbose = bootverbose; 517 memset(sc->cmi_order, 0, sizeof(sc->cmi_order)); 518 519 sc->wmi_dev = device_get_parent(dev); 520 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 521 ACPI_HP_WMI_BIOS_GUID)) { 522 device_printf(dev, 523 "WMI device does not provide the HP BIOS GUID\n"); 524 return (EINVAL); 525 } 526 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 527 ACPI_HP_WMI_EVENT_GUID)) { 528 device_printf(dev, 529 "HP event GUID detected, installing event handler\n"); 530 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev, 531 ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) { 532 device_printf(dev, 533 "Could not install notification handler!\n"); 534 } 535 else { 536 sc->has_notify = 1; 537 } 538 } 539 if ((sc->has_cmi = 540 ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID) 541 )) { 542 device_printf(dev, "HP CMI GUID detected\n"); 543 } 544 545 if (sc->has_cmi) { 546 sc->hpcmi_dev_t = make_dev(&hpcmi_cdevsw, 0, UID_ROOT, 547 GID_WHEEL, 0644, "hpcmi"); 548 sc->hpcmi_dev_t->si_drv1 = sc; 549 sc->hpcmi_open_pid = 0; 550 sc->hpcmi_bufptr = -1; 551 } 552 553 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 554 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, NULL) == 0) 555 sc->has_wireless = 1; 556 557 ACPI_SERIAL_BEGIN(hp); 558 559 sc->sysctl_ctx = device_get_sysctl_ctx(dev); 560 sc->sysctl_tree = device_get_sysctl_tree(dev); 561 for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) { 562 arg = 0; 563 if (((!sc->has_notify || !sc->has_wireless) && 564 (acpi_hp_sysctls[i].method == 565 ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON || 566 acpi_hp_sysctls[i].method == 567 ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF || 568 acpi_hp_sysctls[i].method == 569 ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON || 570 acpi_hp_sysctls[i].method == 571 ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF || 572 acpi_hp_sysctls[i].method == 573 ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON || 574 acpi_hp_sysctls[i].method == 575 ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) || 576 (arg = acpi_hp_sysctl_get(sc, 577 acpi_hp_sysctls[i].method)) < 0) { 578 continue; 579 } 580 if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) { 581 sc->was_wlan_on_air = arg; 582 } 583 else if (acpi_hp_sysctls[i].method == 584 ACPI_HP_METHOD_BLUETOOTH_ON_AIR) { 585 sc->was_bluetooth_on_air = arg; 586 } 587 else if (acpi_hp_sysctls[i].method == 588 ACPI_HP_METHOD_WWAN_ON_AIR) { 589 sc->was_wwan_on_air = arg; 590 } 591 592 if (acpi_hp_sysctls[i].flag_rdonly != 0) { 593 SYSCTL_ADD_PROC(sc->sysctl_ctx, 594 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 595 acpi_hp_sysctls[i].name, 596 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, 597 sc, i, acpi_hp_sysctl, "I", 598 acpi_hp_sysctls[i].description); 599 } else { 600 SYSCTL_ADD_PROC(sc->sysctl_ctx, 601 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 602 acpi_hp_sysctls[i].name, 603 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, 604 sc, i, acpi_hp_sysctl, "I", 605 acpi_hp_sysctls[i].description); 606 } 607 } 608 ACPI_SERIAL_END(hp); 609 610 return (0); 611 } 612 613 static int 614 acpi_hp_detach(device_t dev) 615 { 616 struct acpi_hp_softc *sc; 617 618 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 619 sc = device_get_softc(dev); 620 if (sc->has_cmi && sc->hpcmi_open_pid != 0) 621 return (EBUSY); 622 623 if (sc->has_notify) { 624 ACPI_WMI_REMOVE_EVENT_HANDLER(sc->wmi_dev, 625 ACPI_HP_WMI_EVENT_GUID); 626 } 627 628 if (sc->has_cmi) { 629 if (sc->hpcmi_bufptr != -1) { 630 sbuf_delete(&sc->hpcmi_sbuf); 631 sc->hpcmi_bufptr = -1; 632 } 633 sc->hpcmi_open_pid = 0; 634 destroy_dev(sc->hpcmi_dev_t); 635 } 636 637 return (0); 638 } 639 640 static int 641 acpi_hp_sysctl(SYSCTL_HANDLER_ARGS) 642 { 643 struct acpi_hp_softc *sc; 644 int arg; 645 int oldarg; 646 int error = 0; 647 int function; 648 int method; 649 650 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 651 652 sc = (struct acpi_hp_softc *)oidp->oid_arg1; 653 function = oidp->oid_arg2; 654 method = acpi_hp_sysctls[function].method; 655 656 ACPI_SERIAL_BEGIN(hp); 657 arg = acpi_hp_sysctl_get(sc, method); 658 oldarg = arg; 659 error = sysctl_handle_int(oidp, &arg, 0, req); 660 if (!error && req->newptr != NULL) { 661 error = acpi_hp_sysctl_set(sc, method, arg, oldarg); 662 } 663 ACPI_SERIAL_END(hp); 664 665 return (error); 666 } 667 668 static int 669 acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method) 670 { 671 int val = 0; 672 673 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 674 ACPI_SERIAL_ASSERT(hp); 675 676 switch (method) { 677 case ACPI_HP_METHOD_WLAN_ENABLED: 678 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 679 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 680 return (-EINVAL); 681 val = ((val & HP_MASK_WLAN_ENABLED) != 0); 682 break; 683 case ACPI_HP_METHOD_WLAN_RADIO: 684 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 685 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 686 return (-EINVAL); 687 val = ((val & HP_MASK_WLAN_RADIO) != 0); 688 break; 689 case ACPI_HP_METHOD_WLAN_ON_AIR: 690 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 691 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 692 return (-EINVAL); 693 val = ((val & HP_MASK_WLAN_ON_AIR) != 0); 694 break; 695 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 696 val = sc->wlan_enable_if_radio_on; 697 break; 698 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 699 val = sc->wlan_disable_if_radio_off; 700 break; 701 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 702 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 703 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 704 return (-EINVAL); 705 val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0); 706 break; 707 case ACPI_HP_METHOD_BLUETOOTH_RADIO: 708 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 709 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 710 return (-EINVAL); 711 val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0); 712 break; 713 case ACPI_HP_METHOD_BLUETOOTH_ON_AIR: 714 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 715 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 716 return (-EINVAL); 717 val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0); 718 break; 719 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 720 val = sc->bluetooth_enable_if_radio_on; 721 break; 722 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 723 val = sc->bluetooth_disable_if_radio_off; 724 break; 725 case ACPI_HP_METHOD_WWAN_ENABLED: 726 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 727 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 728 return (-EINVAL); 729 val = ((val & HP_MASK_WWAN_ENABLED) != 0); 730 break; 731 case ACPI_HP_METHOD_WWAN_RADIO: 732 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 733 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 734 return (-EINVAL); 735 val = ((val & HP_MASK_WWAN_RADIO) != 0); 736 break; 737 case ACPI_HP_METHOD_WWAN_ON_AIR: 738 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 739 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 740 return (-EINVAL); 741 val = ((val & HP_MASK_WWAN_ON_AIR) != 0); 742 break; 743 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 744 val = sc->wwan_enable_if_radio_on; 745 break; 746 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 747 val = sc->wwan_disable_if_radio_off; 748 break; 749 case ACPI_HP_METHOD_ALS: 750 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 751 ACPI_HP_WMI_ALS_COMMAND, 0, 0, &val)) 752 return (-EINVAL); 753 break; 754 case ACPI_HP_METHOD_DISPLAY: 755 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 756 ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0, &val)) 757 return (-EINVAL); 758 break; 759 case ACPI_HP_METHOD_HDDTEMP: 760 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 761 ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0, &val)) 762 return (-EINVAL); 763 break; 764 case ACPI_HP_METHOD_DOCK: 765 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 766 ACPI_HP_WMI_DOCK_COMMAND, 0, 0, &val)) 767 return (-EINVAL); 768 break; 769 case ACPI_HP_METHOD_CMI_DETAIL: 770 val = sc->cmi_detail; 771 break; 772 case ACPI_HP_METHOD_VERBOSE: 773 val = sc->verbose; 774 break; 775 } 776 777 return (val); 778 } 779 780 static int 781 acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg) 782 { 783 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 784 ACPI_SERIAL_ASSERT(hp); 785 786 if (method != ACPI_HP_METHOD_CMI_DETAIL && 787 method != ACPI_HP_METHOD_VERBOSE) 788 arg = arg?1:0; 789 790 if (arg != oldarg) { 791 switch (method) { 792 case ACPI_HP_METHOD_WLAN_ENABLED: 793 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 794 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 795 arg?0x101:0x100, NULL)) 796 return (-EINVAL); 797 break; 798 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 799 sc->wlan_enable_if_radio_on = arg; 800 acpi_hp_evaluate_auto_on_off(sc); 801 break; 802 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 803 sc->wlan_disable_if_radio_off = arg; 804 acpi_hp_evaluate_auto_on_off(sc); 805 break; 806 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 807 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 808 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 809 arg?0x202:0x200, NULL)) 810 return (-EINVAL); 811 break; 812 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 813 sc->bluetooth_enable_if_radio_on = arg; 814 acpi_hp_evaluate_auto_on_off(sc); 815 break; 816 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 817 sc->bluetooth_disable_if_radio_off = arg?1:0; 818 acpi_hp_evaluate_auto_on_off(sc); 819 break; 820 case ACPI_HP_METHOD_WWAN_ENABLED: 821 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 822 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 823 arg?0x404:0x400, NULL)) 824 return (-EINVAL); 825 break; 826 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 827 sc->wwan_enable_if_radio_on = arg?1:0; 828 acpi_hp_evaluate_auto_on_off(sc); 829 break; 830 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 831 sc->wwan_disable_if_radio_off = arg?1:0; 832 acpi_hp_evaluate_auto_on_off(sc); 833 break; 834 case ACPI_HP_METHOD_ALS: 835 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 836 ACPI_HP_WMI_ALS_COMMAND, 1, arg?1:0, NULL)) 837 return (-EINVAL); 838 break; 839 case ACPI_HP_METHOD_CMI_DETAIL: 840 sc->cmi_detail = arg; 841 if ((arg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) != 842 (oldarg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE)) { 843 sc->cmi_order_size = -1; 844 } 845 break; 846 case ACPI_HP_METHOD_VERBOSE: 847 sc->verbose = arg; 848 break; 849 } 850 } 851 852 return (0); 853 } 854 855 static __inline void 856 acpi_hp_free_buffer(ACPI_BUFFER* buf) { 857 if (buf && buf->Pointer) { 858 AcpiOsFree(buf->Pointer); 859 } 860 } 861 862 static void 863 acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context) 864 { 865 device_t dev = context; 866 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 867 868 struct acpi_hp_softc *sc = device_get_softc(dev); 869 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL }; 870 ACPI_OBJECT *obj; 871 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response); 872 obj = (ACPI_OBJECT*) response.Pointer; 873 if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) { 874 switch (*((UINT8 *) obj->Buffer.Pointer)) { 875 case ACPI_HP_EVENT_WIRELESS: 876 acpi_hp_evaluate_auto_on_off(sc); 877 break; 878 default: 879 if (sc->verbose) { 880 device_printf(sc->dev, "Event %02x\n", 881 *((UINT8 *) obj->Buffer.Pointer)); 882 } 883 break; 884 } 885 } 886 acpi_hp_free_buffer(&response); 887 } 888 889 static int 890 acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, 891 int val, int *retval) 892 { 893 UINT32 params[4+32] = { 0x55434553, is_write ? 2 : 1, 894 command, 4, val}; 895 UINT32* result; 896 ACPI_OBJECT *obj; 897 ACPI_BUFFER in = { sizeof(params), ¶ms }; 898 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 899 int res; 900 901 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID, 902 0, 0x3, &in, &out))) { 903 acpi_hp_free_buffer(&out); 904 return (-EINVAL); 905 } 906 obj = out.Pointer; 907 if (!obj || obj->Type != ACPI_TYPE_BUFFER) { 908 acpi_hp_free_buffer(&out); 909 return (-EINVAL); 910 } 911 result = (UINT32*) obj->Buffer.Pointer; 912 res = result[1]; 913 if (res == 0 && retval != NULL) 914 *retval = result[2]; 915 acpi_hp_free_buffer(&out); 916 917 return (res); 918 } 919 920 static __inline char* 921 acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) { 922 int length; 923 924 dst[0] = 0; 925 if (obj->Type == ACPI_TYPE_STRING) { 926 length = obj->String.Length+1; 927 if (length > size) { 928 length = size - 1; 929 } 930 strlcpy(dst, obj->String.Pointer, length); 931 acpi_hp_hex_decode(dst); 932 } 933 934 return (dst); 935 } 936 937 /* 938 * Read BIOS Setting block in instance "instance". 939 * The block returned is ACPI_TYPE_PACKAGE which should contain the following 940 * elements: 941 * Index Meaning 942 * 0 Setting Name [string] 943 * 1 Value (comma separated, asterisk marks the current value) [string] 944 * 2 Path within the bios hierarchy [string] 945 * 3 IsReadOnly [int] 946 * 4 DisplayInUI [int] 947 * 5 RequiresPhysicalPresence [int] 948 * 6 Sequence for ordering within the bios settings (absolute) [int] 949 * 7 Length of prerequisites array [int] 950 * 8..8+[7] PrerequisiteN [string] 951 * 9+[7] Current value (in case of enum) [string] / Array length [int] 952 * 10+[7] Enum length [int] / Array values 953 * 11+[7]ff Enum value at index x [string] 954 */ 955 static int 956 acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance, 957 char* outbuf, size_t outsize, UINT32* sequence, int detail) 958 { 959 ACPI_OBJECT *obj; 960 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 961 int i; 962 int outlen; 963 int has_enums = 0; 964 int valuebase = 0; 965 char string_buffer[255]; 966 int enumbase; 967 968 outlen = 0; 969 outbuf[0] = 0; 970 if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) { 971 acpi_hp_free_buffer(&out); 972 return (-EINVAL); 973 } 974 obj = out.Pointer; 975 if (!obj || obj->Type != ACPI_TYPE_PACKAGE) { 976 acpi_hp_free_buffer(&out); 977 return (-EINVAL); 978 } 979 980 /* Check if first 6 bytes matches our expectations. */ 981 if (obj->Package.Count < 8 || 982 obj->Package.Elements[0].Type != ACPI_TYPE_STRING || 983 obj->Package.Elements[1].Type != ACPI_TYPE_STRING || 984 obj->Package.Elements[2].Type != ACPI_TYPE_STRING || 985 obj->Package.Elements[3].Type != ACPI_TYPE_INTEGER || 986 obj->Package.Elements[4].Type != ACPI_TYPE_INTEGER || 987 obj->Package.Elements[5].Type != ACPI_TYPE_INTEGER || 988 obj->Package.Elements[6].Type != ACPI_TYPE_INTEGER || 989 obj->Package.Elements[7].Type != ACPI_TYPE_INTEGER) { 990 acpi_hp_free_buffer(&out); 991 return (-EINVAL); 992 } 993 994 /* Skip prerequisites and optionally array. */ 995 valuebase = 8 + obj->Package.Elements[7].Integer.Value; 996 if (obj->Package.Count <= valuebase) { 997 acpi_hp_free_buffer(&out); 998 return (-EINVAL); 999 } 1000 if (obj->Package.Elements[valuebase].Type == ACPI_TYPE_INTEGER) 1001 valuebase += 1 + obj->Package.Elements[valuebase].Integer.Value; 1002 1003 /* Check if we have value and enum. */ 1004 if (obj->Package.Count <= valuebase + 1 || 1005 obj->Package.Elements[valuebase].Type != ACPI_TYPE_STRING || 1006 obj->Package.Elements[valuebase+1].Type != ACPI_TYPE_INTEGER) { 1007 acpi_hp_free_buffer(&out); 1008 return (-EINVAL); 1009 } 1010 enumbase = valuebase + 1; 1011 if (obj->Package.Count <= valuebase + 1012 obj->Package.Elements[enumbase].Integer.Value) { 1013 acpi_hp_free_buffer(&out); 1014 return (-EINVAL); 1015 } 1016 1017 if (detail & ACPI_HP_CMI_DETAIL_PATHS) { 1018 strlcat(outbuf, acpi_hp_get_string_from_object( 1019 &obj->Package.Elements[2], 1020 string_buffer, sizeof(string_buffer)), outsize); 1021 outlen += 48; 1022 while (strlen(outbuf) < outlen) 1023 strlcat(outbuf, " ", outsize); 1024 } 1025 strlcat(outbuf, acpi_hp_get_string_from_object( 1026 &obj->Package.Elements[0], 1027 string_buffer, sizeof(string_buffer)), outsize); 1028 outlen += 43; 1029 while (strlen(outbuf) < outlen) 1030 strlcat(outbuf, " ", outsize); 1031 strlcat(outbuf, acpi_hp_get_string_from_object( 1032 &obj->Package.Elements[valuebase], 1033 string_buffer, sizeof(string_buffer)), outsize); 1034 outlen += 21; 1035 while (strlen(outbuf) < outlen) 1036 strlcat(outbuf, " ", outsize); 1037 for (i = 0; i < strlen(outbuf); ++i) 1038 if (outbuf[i] == '\\') 1039 outbuf[i] = '/'; 1040 if (detail & ACPI_HP_CMI_DETAIL_ENUMS) { 1041 for (i = enumbase + 1; i < enumbase + 1 + 1042 obj->Package.Elements[enumbase].Integer.Value; ++i) { 1043 acpi_hp_get_string_from_object( 1044 &obj->Package.Elements[i], 1045 string_buffer, sizeof(string_buffer)); 1046 if (strlen(string_buffer) > 1 || 1047 (strlen(string_buffer) == 1 && 1048 string_buffer[0] != ' ')) { 1049 if (has_enums) 1050 strlcat(outbuf, "/", outsize); 1051 else 1052 strlcat(outbuf, " (", outsize); 1053 strlcat(outbuf, string_buffer, outsize); 1054 has_enums = 1; 1055 } 1056 } 1057 } 1058 if (has_enums) 1059 strlcat(outbuf, ")", outsize); 1060 if (detail & ACPI_HP_CMI_DETAIL_FLAGS) { 1061 strlcat(outbuf, obj->Package.Elements[3].Integer.Value ? 1062 " [ReadOnly]" : "", outsize); 1063 strlcat(outbuf, obj->Package.Elements[4].Integer.Value ? 1064 "" : " [NOUI]", outsize); 1065 strlcat(outbuf, obj->Package.Elements[5].Integer.Value ? 1066 " [RPP]" : "", outsize); 1067 } 1068 *sequence = (UINT32) obj->Package.Elements[6].Integer.Value; 1069 acpi_hp_free_buffer(&out); 1070 1071 return (0); 1072 } 1073 1074 /* 1075 * Convert given two digit hex string (hexin) to an UINT8 referenced 1076 * by byteout. 1077 * Return != 0 if the was a problem (invalid input) 1078 */ 1079 static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout) 1080 { 1081 unsigned int hi; 1082 unsigned int lo; 1083 1084 hi = hexin[0]; 1085 lo = hexin[1]; 1086 if ('0' <= hi && hi <= '9') 1087 hi -= '0'; 1088 else if ('A' <= hi && hi <= 'F') 1089 hi -= ('A' - 10); 1090 else if ('a' <= hi && hi <= 'f') 1091 hi -= ('a' - 10); 1092 else 1093 return (1); 1094 if ('0' <= lo && lo <= '9') 1095 lo -= '0'; 1096 else if ('A' <= lo && lo <= 'F') 1097 lo -= ('A' - 10); 1098 else if ('a' <= lo && lo <= 'f') 1099 lo -= ('a' - 10); 1100 else 1101 return (1); 1102 *byteout = (hi << 4) + lo; 1103 1104 return (0); 1105 } 1106 1107 static void 1108 acpi_hp_hex_decode(char* buffer) 1109 { 1110 int i; 1111 int length = strlen(buffer); 1112 UINT8 *uin; 1113 UINT8 uout; 1114 1115 if (rounddown((int)length, 2) == length || length < 10) 1116 return; 1117 1118 for (i = 0; i<length; ++i) { 1119 if (!((i+1)%3)) { 1120 if (buffer[i] != ' ') 1121 return; 1122 } 1123 else 1124 if (!((buffer[i] >= '0' && buffer[i] <= '9') || 1125 (buffer[i] >= 'A' && buffer[i] <= 'F'))) 1126 return; 1127 } 1128 1129 for (i = 0; i<length; i += 3) { 1130 uin = &buffer[i]; 1131 uout = 0; 1132 acpi_hp_hex_to_int(uin, &uout); 1133 buffer[i/3] = (char) uout; 1134 } 1135 buffer[(length+1)/3] = 0; 1136 } 1137 1138 /* 1139 * open hpcmi device 1140 */ 1141 static int 1142 acpi_hp_hpcmi_open(struct cdev* dev, int flags, int mode, struct thread *td) 1143 { 1144 struct acpi_hp_softc *sc; 1145 int ret; 1146 1147 if (dev == NULL || dev->si_drv1 == NULL) 1148 return (EBADF); 1149 sc = dev->si_drv1; 1150 1151 ACPI_SERIAL_BEGIN(hp); 1152 if (sc->hpcmi_open_pid != 0) { 1153 ret = EBUSY; 1154 } 1155 else { 1156 if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND) 1157 == NULL) { 1158 ret = ENXIO; 1159 } else { 1160 sc->hpcmi_open_pid = td->td_proc->p_pid; 1161 sc->hpcmi_bufptr = 0; 1162 ret = 0; 1163 } 1164 } 1165 ACPI_SERIAL_END(hp); 1166 1167 return (ret); 1168 } 1169 1170 /* 1171 * close hpcmi device 1172 */ 1173 static int 1174 acpi_hp_hpcmi_close(struct cdev* dev, int flags, int mode, struct thread *td) 1175 { 1176 struct acpi_hp_softc *sc; 1177 int ret; 1178 1179 if (dev == NULL || dev->si_drv1 == NULL) 1180 return (EBADF); 1181 sc = dev->si_drv1; 1182 1183 ACPI_SERIAL_BEGIN(hp); 1184 if (sc->hpcmi_open_pid == 0) { 1185 ret = EBADF; 1186 } 1187 else { 1188 if (sc->hpcmi_bufptr != -1) { 1189 sbuf_delete(&sc->hpcmi_sbuf); 1190 sc->hpcmi_bufptr = -1; 1191 } 1192 sc->hpcmi_open_pid = 0; 1193 ret = 0; 1194 } 1195 ACPI_SERIAL_END(hp); 1196 1197 return (ret); 1198 } 1199 1200 /* 1201 * Read from hpcmi bios information 1202 */ 1203 static int 1204 acpi_hp_hpcmi_read(struct cdev *dev, struct uio *buf, int flag) 1205 { 1206 struct acpi_hp_softc *sc; 1207 int pos, i, l, ret; 1208 UINT8 instance; 1209 UINT8 maxInstance; 1210 UINT32 sequence; 1211 char line[1025]; 1212 1213 if (dev == NULL || dev->si_drv1 == NULL) 1214 return (EBADF); 1215 sc = dev->si_drv1; 1216 1217 ACPI_SERIAL_BEGIN(hp); 1218 if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid 1219 || sc->hpcmi_bufptr == -1) { 1220 ret = EBADF; 1221 } 1222 else { 1223 if (!sbuf_done(&sc->hpcmi_sbuf)) { 1224 if (sc->cmi_order_size < 0) { 1225 maxInstance = sc->has_cmi; 1226 if (!(sc->cmi_detail & 1227 ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) && 1228 maxInstance > 0) { 1229 maxInstance--; 1230 } 1231 sc->cmi_order_size = 0; 1232 for (instance = 0; instance < maxInstance; 1233 ++instance) { 1234 if (acpi_hp_get_cmi_block(sc->wmi_dev, 1235 ACPI_HP_WMI_CMI_GUID, instance, 1236 line, sizeof(line), &sequence, 1237 sc->cmi_detail)) { 1238 instance = maxInstance; 1239 } 1240 else { 1241 pos = sc->cmi_order_size; 1242 for (i=0; 1243 i<sc->cmi_order_size && i<127; 1244 ++i) { 1245 if (sc->cmi_order[i].sequence > sequence) { 1246 pos = i; 1247 break; 1248 } 1249 } 1250 for (i=sc->cmi_order_size; 1251 i>pos; 1252 --i) { 1253 sc->cmi_order[i].sequence = 1254 sc->cmi_order[i-1].sequence; 1255 sc->cmi_order[i].instance = 1256 sc->cmi_order[i-1].instance; 1257 } 1258 sc->cmi_order[pos].sequence = 1259 sequence; 1260 sc->cmi_order[pos].instance = 1261 instance; 1262 sc->cmi_order_size++; 1263 } 1264 } 1265 } 1266 for (i=0; i<sc->cmi_order_size; ++i) { 1267 if (!acpi_hp_get_cmi_block(sc->wmi_dev, 1268 ACPI_HP_WMI_CMI_GUID, 1269 sc->cmi_order[i].instance, line, sizeof(line), 1270 &sequence, sc->cmi_detail)) { 1271 sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line); 1272 } 1273 } 1274 sbuf_finish(&sc->hpcmi_sbuf); 1275 } 1276 if (sbuf_len(&sc->hpcmi_sbuf) <= 0) { 1277 sbuf_delete(&sc->hpcmi_sbuf); 1278 sc->hpcmi_bufptr = -1; 1279 sc->hpcmi_open_pid = 0; 1280 ret = ENOMEM; 1281 } else { 1282 l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) - 1283 sc->hpcmi_bufptr); 1284 ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) + 1285 sc->hpcmi_bufptr, l, buf) : 0; 1286 sc->hpcmi_bufptr += l; 1287 } 1288 } 1289 ACPI_SERIAL_END(hp); 1290 1291 return (ret); 1292 } 1293