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, CTLTYPE_INT | CTLFLAG_RD, 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, CTLTYPE_INT | CTLFLAG_RW, 603 sc, i, acpi_hp_sysctl, "I", 604 acpi_hp_sysctls[i].description); 605 } 606 } 607 ACPI_SERIAL_END(hp); 608 609 return (0); 610 } 611 612 static int 613 acpi_hp_detach(device_t dev) 614 { 615 struct acpi_hp_softc *sc; 616 617 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 618 sc = device_get_softc(dev); 619 if (sc->has_cmi && sc->hpcmi_open_pid != 0) 620 return (EBUSY); 621 622 if (sc->has_notify) { 623 ACPI_WMI_REMOVE_EVENT_HANDLER(sc->wmi_dev, 624 ACPI_HP_WMI_EVENT_GUID); 625 } 626 627 if (sc->has_cmi) { 628 if (sc->hpcmi_bufptr != -1) { 629 sbuf_delete(&sc->hpcmi_sbuf); 630 sc->hpcmi_bufptr = -1; 631 } 632 sc->hpcmi_open_pid = 0; 633 destroy_dev(sc->hpcmi_dev_t); 634 } 635 636 return (0); 637 } 638 639 static int 640 acpi_hp_sysctl(SYSCTL_HANDLER_ARGS) 641 { 642 struct acpi_hp_softc *sc; 643 int arg; 644 int oldarg; 645 int error = 0; 646 int function; 647 int method; 648 649 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 650 651 sc = (struct acpi_hp_softc *)oidp->oid_arg1; 652 function = oidp->oid_arg2; 653 method = acpi_hp_sysctls[function].method; 654 655 ACPI_SERIAL_BEGIN(hp); 656 arg = acpi_hp_sysctl_get(sc, method); 657 oldarg = arg; 658 error = sysctl_handle_int(oidp, &arg, 0, req); 659 if (!error && req->newptr != NULL) { 660 error = acpi_hp_sysctl_set(sc, method, arg, oldarg); 661 } 662 ACPI_SERIAL_END(hp); 663 664 return (error); 665 } 666 667 static int 668 acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method) 669 { 670 int val = 0; 671 672 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 673 ACPI_SERIAL_ASSERT(hp); 674 675 switch (method) { 676 case ACPI_HP_METHOD_WLAN_ENABLED: 677 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 678 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 679 return (-EINVAL); 680 val = ((val & HP_MASK_WLAN_ENABLED) != 0); 681 break; 682 case ACPI_HP_METHOD_WLAN_RADIO: 683 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 684 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 685 return (-EINVAL); 686 val = ((val & HP_MASK_WLAN_RADIO) != 0); 687 break; 688 case ACPI_HP_METHOD_WLAN_ON_AIR: 689 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 690 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 691 return (-EINVAL); 692 val = ((val & HP_MASK_WLAN_ON_AIR) != 0); 693 break; 694 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 695 val = sc->wlan_enable_if_radio_on; 696 break; 697 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 698 val = sc->wlan_disable_if_radio_off; 699 break; 700 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 701 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 702 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 703 return (-EINVAL); 704 val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0); 705 break; 706 case ACPI_HP_METHOD_BLUETOOTH_RADIO: 707 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 708 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 709 return (-EINVAL); 710 val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0); 711 break; 712 case ACPI_HP_METHOD_BLUETOOTH_ON_AIR: 713 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 714 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 715 return (-EINVAL); 716 val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0); 717 break; 718 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 719 val = sc->bluetooth_enable_if_radio_on; 720 break; 721 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 722 val = sc->bluetooth_disable_if_radio_off; 723 break; 724 case ACPI_HP_METHOD_WWAN_ENABLED: 725 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 726 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 727 return (-EINVAL); 728 val = ((val & HP_MASK_WWAN_ENABLED) != 0); 729 break; 730 case ACPI_HP_METHOD_WWAN_RADIO: 731 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 732 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 733 return (-EINVAL); 734 val = ((val & HP_MASK_WWAN_RADIO) != 0); 735 break; 736 case ACPI_HP_METHOD_WWAN_ON_AIR: 737 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 738 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0, &val)) 739 return (-EINVAL); 740 val = ((val & HP_MASK_WWAN_ON_AIR) != 0); 741 break; 742 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 743 val = sc->wwan_enable_if_radio_on; 744 break; 745 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 746 val = sc->wwan_disable_if_radio_off; 747 break; 748 case ACPI_HP_METHOD_ALS: 749 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 750 ACPI_HP_WMI_ALS_COMMAND, 0, 0, &val)) 751 return (-EINVAL); 752 break; 753 case ACPI_HP_METHOD_DISPLAY: 754 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 755 ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0, &val)) 756 return (-EINVAL); 757 break; 758 case ACPI_HP_METHOD_HDDTEMP: 759 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 760 ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0, &val)) 761 return (-EINVAL); 762 break; 763 case ACPI_HP_METHOD_DOCK: 764 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 765 ACPI_HP_WMI_DOCK_COMMAND, 0, 0, &val)) 766 return (-EINVAL); 767 break; 768 case ACPI_HP_METHOD_CMI_DETAIL: 769 val = sc->cmi_detail; 770 break; 771 case ACPI_HP_METHOD_VERBOSE: 772 val = sc->verbose; 773 break; 774 } 775 776 return (val); 777 } 778 779 static int 780 acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg) 781 { 782 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 783 ACPI_SERIAL_ASSERT(hp); 784 785 if (method != ACPI_HP_METHOD_CMI_DETAIL && 786 method != ACPI_HP_METHOD_VERBOSE) 787 arg = arg?1:0; 788 789 if (arg != oldarg) { 790 switch (method) { 791 case ACPI_HP_METHOD_WLAN_ENABLED: 792 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 793 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 794 arg?0x101:0x100, NULL)) 795 return (-EINVAL); 796 break; 797 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 798 sc->wlan_enable_if_radio_on = arg; 799 acpi_hp_evaluate_auto_on_off(sc); 800 break; 801 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 802 sc->wlan_disable_if_radio_off = arg; 803 acpi_hp_evaluate_auto_on_off(sc); 804 break; 805 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 806 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 807 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 808 arg?0x202:0x200, NULL)) 809 return (-EINVAL); 810 break; 811 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 812 sc->bluetooth_enable_if_radio_on = arg; 813 acpi_hp_evaluate_auto_on_off(sc); 814 break; 815 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 816 sc->bluetooth_disable_if_radio_off = arg?1:0; 817 acpi_hp_evaluate_auto_on_off(sc); 818 break; 819 case ACPI_HP_METHOD_WWAN_ENABLED: 820 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 821 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 822 arg?0x404:0x400, NULL)) 823 return (-EINVAL); 824 break; 825 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 826 sc->wwan_enable_if_radio_on = arg?1:0; 827 acpi_hp_evaluate_auto_on_off(sc); 828 break; 829 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 830 sc->wwan_disable_if_radio_off = arg?1:0; 831 acpi_hp_evaluate_auto_on_off(sc); 832 break; 833 case ACPI_HP_METHOD_ALS: 834 if (acpi_hp_exec_wmi_command(sc->wmi_dev, 835 ACPI_HP_WMI_ALS_COMMAND, 1, arg?1:0, NULL)) 836 return (-EINVAL); 837 break; 838 case ACPI_HP_METHOD_CMI_DETAIL: 839 sc->cmi_detail = arg; 840 if ((arg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) != 841 (oldarg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE)) { 842 sc->cmi_order_size = -1; 843 } 844 break; 845 case ACPI_HP_METHOD_VERBOSE: 846 sc->verbose = arg; 847 break; 848 } 849 } 850 851 return (0); 852 } 853 854 static __inline void 855 acpi_hp_free_buffer(ACPI_BUFFER* buf) { 856 if (buf && buf->Pointer) { 857 AcpiOsFree(buf->Pointer); 858 } 859 } 860 861 static void 862 acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context) 863 { 864 device_t dev = context; 865 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 866 867 struct acpi_hp_softc *sc = device_get_softc(dev); 868 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL }; 869 ACPI_OBJECT *obj; 870 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response); 871 obj = (ACPI_OBJECT*) response.Pointer; 872 if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) { 873 switch (*((UINT8 *) obj->Buffer.Pointer)) { 874 case ACPI_HP_EVENT_WIRELESS: 875 acpi_hp_evaluate_auto_on_off(sc); 876 break; 877 default: 878 if (sc->verbose) { 879 device_printf(sc->dev, "Event %02x\n", 880 *((UINT8 *) obj->Buffer.Pointer)); 881 } 882 break; 883 } 884 } 885 acpi_hp_free_buffer(&response); 886 } 887 888 static int 889 acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, 890 int val, int *retval) 891 { 892 UINT32 params[4+32] = { 0x55434553, is_write ? 2 : 1, 893 command, 4, val}; 894 UINT32* result; 895 ACPI_OBJECT *obj; 896 ACPI_BUFFER in = { sizeof(params), ¶ms }; 897 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 898 int res; 899 900 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID, 901 0, 0x3, &in, &out))) { 902 acpi_hp_free_buffer(&out); 903 return (-EINVAL); 904 } 905 obj = out.Pointer; 906 if (!obj || obj->Type != ACPI_TYPE_BUFFER) { 907 acpi_hp_free_buffer(&out); 908 return (-EINVAL); 909 } 910 result = (UINT32*) obj->Buffer.Pointer; 911 res = result[1]; 912 if (res == 0 && retval != NULL) 913 *retval = result[2]; 914 acpi_hp_free_buffer(&out); 915 916 return (res); 917 } 918 919 static __inline char* 920 acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) { 921 int length; 922 923 dst[0] = 0; 924 if (obj->Type == ACPI_TYPE_STRING) { 925 length = obj->String.Length+1; 926 if (length > size) { 927 length = size - 1; 928 } 929 strlcpy(dst, obj->String.Pointer, length); 930 acpi_hp_hex_decode(dst); 931 } 932 933 return (dst); 934 } 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 size = 255; 964 int has_enums = 0; 965 int valuebase = 0; 966 char string_buffer[size]; 967 int enumbase; 968 969 outlen = 0; 970 outbuf[0] = 0; 971 if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) { 972 acpi_hp_free_buffer(&out); 973 return (-EINVAL); 974 } 975 obj = out.Pointer; 976 if (!obj || obj->Type != ACPI_TYPE_PACKAGE) { 977 acpi_hp_free_buffer(&out); 978 return (-EINVAL); 979 } 980 981 /* Check if first 6 bytes matches our expectations. */ 982 if (obj->Package.Count < 8 || 983 obj->Package.Elements[0].Type != ACPI_TYPE_STRING || 984 obj->Package.Elements[1].Type != ACPI_TYPE_STRING || 985 obj->Package.Elements[2].Type != ACPI_TYPE_STRING || 986 obj->Package.Elements[3].Type != ACPI_TYPE_INTEGER || 987 obj->Package.Elements[4].Type != ACPI_TYPE_INTEGER || 988 obj->Package.Elements[5].Type != ACPI_TYPE_INTEGER || 989 obj->Package.Elements[6].Type != ACPI_TYPE_INTEGER || 990 obj->Package.Elements[7].Type != ACPI_TYPE_INTEGER) { 991 acpi_hp_free_buffer(&out); 992 return (-EINVAL); 993 } 994 995 /* Skip prerequisites and optionally array. */ 996 valuebase = 8 + obj->Package.Elements[7].Integer.Value; 997 if (obj->Package.Count <= valuebase) { 998 acpi_hp_free_buffer(&out); 999 return (-EINVAL); 1000 } 1001 if (obj->Package.Elements[valuebase].Type == ACPI_TYPE_INTEGER) 1002 valuebase += 1 + obj->Package.Elements[valuebase].Integer.Value; 1003 1004 /* Check if we have value and enum. */ 1005 if (obj->Package.Count <= valuebase + 1 || 1006 obj->Package.Elements[valuebase].Type != ACPI_TYPE_STRING || 1007 obj->Package.Elements[valuebase+1].Type != ACPI_TYPE_INTEGER) { 1008 acpi_hp_free_buffer(&out); 1009 return (-EINVAL); 1010 } 1011 enumbase = valuebase + 1; 1012 if (obj->Package.Count <= valuebase + 1013 obj->Package.Elements[enumbase].Integer.Value) { 1014 acpi_hp_free_buffer(&out); 1015 return (-EINVAL); 1016 } 1017 1018 if (detail & ACPI_HP_CMI_DETAIL_PATHS) { 1019 strlcat(outbuf, acpi_hp_get_string_from_object( 1020 &obj->Package.Elements[2], string_buffer, size), 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], string_buffer, size), outsize); 1027 outlen += 43; 1028 while (strlen(outbuf) < outlen) 1029 strlcat(outbuf, " ", outsize); 1030 strlcat(outbuf, acpi_hp_get_string_from_object( 1031 &obj->Package.Elements[valuebase], string_buffer, size), outsize); 1032 outlen += 21; 1033 while (strlen(outbuf) < outlen) 1034 strlcat(outbuf, " ", outsize); 1035 for (i = 0; i < strlen(outbuf); ++i) 1036 if (outbuf[i] == '\\') 1037 outbuf[i] = '/'; 1038 if (detail & ACPI_HP_CMI_DETAIL_ENUMS) { 1039 for (i = enumbase + 1; i < enumbase + 1 + 1040 obj->Package.Elements[enumbase].Integer.Value; ++i) { 1041 acpi_hp_get_string_from_object( 1042 &obj->Package.Elements[i], string_buffer, size); 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 1073 /* 1074 * Convert given two digit hex string (hexin) to an UINT8 referenced 1075 * by byteout. 1076 * Return != 0 if the was a problem (invalid input) 1077 */ 1078 static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout) 1079 { 1080 unsigned int hi; 1081 unsigned int lo; 1082 1083 hi = hexin[0]; 1084 lo = hexin[1]; 1085 if ('0' <= hi && hi <= '9') 1086 hi -= '0'; 1087 else if ('A' <= hi && hi <= 'F') 1088 hi -= ('A' - 10); 1089 else if ('a' <= hi && hi <= 'f') 1090 hi -= ('a' - 10); 1091 else 1092 return (1); 1093 if ('0' <= lo && lo <= '9') 1094 lo -= '0'; 1095 else if ('A' <= lo && lo <= 'F') 1096 lo -= ('A' - 10); 1097 else if ('a' <= lo && lo <= 'f') 1098 lo -= ('a' - 10); 1099 else 1100 return (1); 1101 *byteout = (hi << 4) + lo; 1102 1103 return (0); 1104 } 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 /* 1140 * open hpcmi device 1141 */ 1142 static int 1143 acpi_hp_hpcmi_open(struct cdev* dev, int flags, int mode, struct thread *td) 1144 { 1145 struct acpi_hp_softc *sc; 1146 int ret; 1147 1148 if (dev == NULL || dev->si_drv1 == NULL) 1149 return (EBADF); 1150 sc = dev->si_drv1; 1151 1152 ACPI_SERIAL_BEGIN(hp); 1153 if (sc->hpcmi_open_pid != 0) { 1154 ret = EBUSY; 1155 } 1156 else { 1157 if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND) 1158 == NULL) { 1159 ret = ENXIO; 1160 } else { 1161 sc->hpcmi_open_pid = td->td_proc->p_pid; 1162 sc->hpcmi_bufptr = 0; 1163 ret = 0; 1164 } 1165 } 1166 ACPI_SERIAL_END(hp); 1167 1168 return (ret); 1169 } 1170 1171 /* 1172 * close hpcmi device 1173 */ 1174 static int 1175 acpi_hp_hpcmi_close(struct cdev* dev, int flags, int mode, struct thread *td) 1176 { 1177 struct acpi_hp_softc *sc; 1178 int ret; 1179 1180 if (dev == NULL || dev->si_drv1 == NULL) 1181 return (EBADF); 1182 sc = dev->si_drv1; 1183 1184 ACPI_SERIAL_BEGIN(hp); 1185 if (sc->hpcmi_open_pid == 0) { 1186 ret = EBADF; 1187 } 1188 else { 1189 if (sc->hpcmi_bufptr != -1) { 1190 sbuf_delete(&sc->hpcmi_sbuf); 1191 sc->hpcmi_bufptr = -1; 1192 } 1193 sc->hpcmi_open_pid = 0; 1194 ret = 0; 1195 } 1196 ACPI_SERIAL_END(hp); 1197 1198 return (ret); 1199 } 1200 1201 /* 1202 * Read from hpcmi bios information 1203 */ 1204 static int 1205 acpi_hp_hpcmi_read(struct cdev *dev, struct uio *buf, int flag) 1206 { 1207 struct acpi_hp_softc *sc; 1208 int pos, i, l, ret; 1209 UINT8 instance; 1210 UINT8 maxInstance; 1211 UINT32 sequence; 1212 int linesize = 1025; 1213 char line[linesize]; 1214 1215 if (dev == NULL || dev->si_drv1 == NULL) 1216 return (EBADF); 1217 sc = dev->si_drv1; 1218 1219 ACPI_SERIAL_BEGIN(hp); 1220 if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid 1221 || sc->hpcmi_bufptr == -1) { 1222 ret = EBADF; 1223 } 1224 else { 1225 if (!sbuf_done(&sc->hpcmi_sbuf)) { 1226 if (sc->cmi_order_size < 0) { 1227 maxInstance = sc->has_cmi; 1228 if (!(sc->cmi_detail & 1229 ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) && 1230 maxInstance > 0) { 1231 maxInstance--; 1232 } 1233 sc->cmi_order_size = 0; 1234 for (instance = 0; instance < maxInstance; 1235 ++instance) { 1236 if (acpi_hp_get_cmi_block(sc->wmi_dev, 1237 ACPI_HP_WMI_CMI_GUID, instance, 1238 line, linesize, &sequence, 1239 sc->cmi_detail)) { 1240 instance = maxInstance; 1241 } 1242 else { 1243 pos = sc->cmi_order_size; 1244 for (i=0; 1245 i<sc->cmi_order_size && i<127; 1246 ++i) { 1247 if (sc->cmi_order[i].sequence > sequence) { 1248 pos = i; 1249 break; 1250 } 1251 } 1252 for (i=sc->cmi_order_size; 1253 i>pos; 1254 --i) { 1255 sc->cmi_order[i].sequence = 1256 sc->cmi_order[i-1].sequence; 1257 sc->cmi_order[i].instance = 1258 sc->cmi_order[i-1].instance; 1259 } 1260 sc->cmi_order[pos].sequence = 1261 sequence; 1262 sc->cmi_order[pos].instance = 1263 instance; 1264 sc->cmi_order_size++; 1265 } 1266 } 1267 } 1268 for (i=0; i<sc->cmi_order_size; ++i) { 1269 if (!acpi_hp_get_cmi_block(sc->wmi_dev, 1270 ACPI_HP_WMI_CMI_GUID, 1271 sc->cmi_order[i].instance, line, linesize, 1272 &sequence, sc->cmi_detail)) { 1273 sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line); 1274 } 1275 } 1276 sbuf_finish(&sc->hpcmi_sbuf); 1277 } 1278 if (sbuf_len(&sc->hpcmi_sbuf) <= 0) { 1279 sbuf_delete(&sc->hpcmi_sbuf); 1280 sc->hpcmi_bufptr = -1; 1281 sc->hpcmi_open_pid = 0; 1282 ret = ENOMEM; 1283 } else { 1284 l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) - 1285 sc->hpcmi_bufptr); 1286 ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) + 1287 sc->hpcmi_bufptr, l, buf) : 0; 1288 sc->hpcmi_bufptr += l; 1289 } 1290 } 1291 ACPI_SERIAL_END(hp); 1292 1293 return (ret); 1294 } 1295