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