acpi_hp.c revision 273736
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: stable/10/sys/dev/acpi_support/acpi_hp.c 273736 2014-10-27 14:38:00Z hselasky $"); 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 flag_rdonly; 156} acpi_hp_sysctls[] = { 157 { 158 .name = "wlan_enabled", 159 .method = ACPI_HP_METHOD_WLAN_ENABLED, 160 .description = "Enable/Disable WLAN (WiFi)", 161 }, 162 { 163 .name = "wlan_radio", 164 .method = ACPI_HP_METHOD_WLAN_RADIO, 165 .description = "WLAN radio status", 166 .flag_rdonly = 1 167 }, 168 { 169 .name = "wlan_on_air", 170 .method = ACPI_HP_METHOD_WLAN_ON_AIR, 171 .description = "WLAN radio ready to use (enabled and radio)", 172 .flag_rdonly = 1 173 }, 174 { 175 .name = "wlan_enable_if_radio_on", 176 .method = ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON, 177 .description = "Enable WLAN if radio is turned on", 178 }, 179 { 180 .name = "wlan_disable_if_radio_off", 181 .method = ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF, 182 .description = "Disable WLAN if radio is turned off", 183 }, 184 { 185 .name = "bt_enabled", 186 .method = ACPI_HP_METHOD_BLUETOOTH_ENABLED, 187 .description = "Enable/Disable Bluetooth", 188 }, 189 { 190 .name = "bt_radio", 191 .method = ACPI_HP_METHOD_BLUETOOTH_RADIO, 192 .description = "Bluetooth radio status", 193 .flag_rdonly = 1 194 }, 195 { 196 .name = "bt_on_air", 197 .method = ACPI_HP_METHOD_BLUETOOTH_ON_AIR, 198 .description = "Bluetooth radio ready to use" 199 " (enabled and radio)", 200 .flag_rdonly = 1 201 }, 202 { 203 .name = "bt_enable_if_radio_on", 204 .method = ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON, 205 .description = "Enable bluetooth if radio is turned on", 206 }, 207 { 208 .name = "bt_disable_if_radio_off", 209 .method = ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF, 210 .description = "Disable bluetooth if radio is turned off", 211 }, 212 { 213 .name = "wwan_enabled", 214 .method = ACPI_HP_METHOD_WWAN_ENABLED, 215 .description = "Enable/Disable WWAN (UMTS)", 216 }, 217 { 218 .name = "wwan_radio", 219 .method = ACPI_HP_METHOD_WWAN_RADIO, 220 .description = "WWAN radio status", 221 .flag_rdonly = 1 222 }, 223 { 224 .name = "wwan_on_air", 225 .method = ACPI_HP_METHOD_WWAN_ON_AIR, 226 .description = "WWAN radio ready to use (enabled and radio)", 227 .flag_rdonly = 1 228 }, 229 { 230 .name = "wwan_enable_if_radio_on", 231 .method = ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON, 232 .description = "Enable WWAN if radio is turned on", 233 }, 234 { 235 .name = "wwan_disable_if_radio_off", 236 .method = ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF, 237 .description = "Disable WWAN if radio is turned off", 238 }, 239 { 240 .name = "als_enabled", 241 .method = ACPI_HP_METHOD_ALS, 242 .description = "Enable/Disable ALS (Ambient light sensor)", 243 }, 244 { 245 .name = "display", 246 .method = ACPI_HP_METHOD_DISPLAY, 247 .description = "Display status", 248 .flag_rdonly = 1 249 }, 250 { 251 .name = "hdd_temperature", 252 .method = ACPI_HP_METHOD_HDDTEMP, 253 .description = "HDD temperature", 254 .flag_rdonly = 1 255 }, 256 { 257 .name = "is_docked", 258 .method = ACPI_HP_METHOD_DOCK, 259 .description = "Docking station status", 260 .flag_rdonly = 1 261 }, 262 { 263 .name = "cmi_detail", 264 .method = ACPI_HP_METHOD_CMI_DETAIL, 265 .description = "Details shown in CMI output " 266 "(cat /dev/hpcmi)", 267 }, 268 { 269 .name = "verbose", 270 .method = ACPI_HP_METHOD_VERBOSE, 271 .description = "Verbosity level", 272 }, 273 274 { NULL, 0, NULL, 0 } 275}; 276 277ACPI_SERIAL_DECL(hp, "HP ACPI-WMI Mapping"); 278 279static void acpi_hp_identify(driver_t *driver, device_t parent); 280static int acpi_hp_probe(device_t dev); 281static int acpi_hp_attach(device_t dev); 282static int acpi_hp_detach(device_t dev); 283 284static void acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc* sc); 285static int acpi_hp_sysctl(SYSCTL_HANDLER_ARGS); 286static int acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, 287 int arg, int oldarg); 288static int acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method); 289static int acpi_hp_exec_wmi_command(device_t wmi_dev, int command, 290 int is_write, int val); 291static void acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context); 292static int acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, 293 UINT8 instance, char* outbuf, size_t outsize, 294 UINT32* sequence, int detail); 295static void acpi_hp_hex_decode(char* buffer); 296 297static d_open_t acpi_hp_hpcmi_open; 298static d_close_t acpi_hp_hpcmi_close; 299static d_read_t acpi_hp_hpcmi_read; 300 301/* handler /dev/hpcmi device */ 302static struct cdevsw hpcmi_cdevsw = { 303 .d_version = D_VERSION, 304 .d_open = acpi_hp_hpcmi_open, 305 .d_close = acpi_hp_hpcmi_close, 306 .d_read = acpi_hp_hpcmi_read, 307 .d_name = "hpcmi", 308}; 309 310static device_method_t acpi_hp_methods[] = { 311 DEVMETHOD(device_identify, acpi_hp_identify), 312 DEVMETHOD(device_probe, acpi_hp_probe), 313 DEVMETHOD(device_attach, acpi_hp_attach), 314 DEVMETHOD(device_detach, acpi_hp_detach), 315 316 DEVMETHOD_END 317}; 318 319static driver_t acpi_hp_driver = { 320 "acpi_hp", 321 acpi_hp_methods, 322 sizeof(struct acpi_hp_softc), 323}; 324 325static devclass_t acpi_hp_devclass; 326 327DRIVER_MODULE(acpi_hp, acpi_wmi, acpi_hp_driver, acpi_hp_devclass, 328 0, 0); 329MODULE_DEPEND(acpi_hp, acpi_wmi, 1, 1, 1); 330MODULE_DEPEND(acpi_hp, acpi, 1, 1, 1); 331 332static void 333acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc *sc) 334{ 335 int wireless; 336 int new_wlan_status; 337 int new_bluetooth_status; 338 int new_wwan_status; 339 340 wireless = acpi_hp_exec_wmi_command(sc->wmi_dev, 341 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 342 new_wlan_status = -1; 343 new_bluetooth_status = -1; 344 new_wwan_status = -1; 345 346 if (sc->verbose) 347 device_printf(sc->wmi_dev, "Wireless status is %x\n", wireless); 348 if (sc->wlan_disable_if_radio_off && !(wireless & HP_MASK_WLAN_RADIO) 349 && (wireless & HP_MASK_WLAN_ENABLED)) { 350 acpi_hp_exec_wmi_command(sc->wmi_dev, 351 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x100); 352 new_wlan_status = 0; 353 } 354 else if (sc->wlan_enable_if_radio_on && (wireless & HP_MASK_WLAN_RADIO) 355 && !(wireless & HP_MASK_WLAN_ENABLED)) { 356 acpi_hp_exec_wmi_command(sc->wmi_dev, 357 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x101); 358 new_wlan_status = 1; 359 } 360 if (sc->bluetooth_disable_if_radio_off && 361 !(wireless & HP_MASK_BLUETOOTH_RADIO) && 362 (wireless & HP_MASK_BLUETOOTH_ENABLED)) { 363 acpi_hp_exec_wmi_command(sc->wmi_dev, 364 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x200); 365 new_bluetooth_status = 0; 366 } 367 else if (sc->bluetooth_enable_if_radio_on && 368 (wireless & HP_MASK_BLUETOOTH_RADIO) && 369 !(wireless & HP_MASK_BLUETOOTH_ENABLED)) { 370 acpi_hp_exec_wmi_command(sc->wmi_dev, 371 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x202); 372 new_bluetooth_status = 1; 373 } 374 if (sc->wwan_disable_if_radio_off && 375 !(wireless & HP_MASK_WWAN_RADIO) && 376 (wireless & HP_MASK_WWAN_ENABLED)) { 377 acpi_hp_exec_wmi_command(sc->wmi_dev, 378 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x400); 379 new_wwan_status = 0; 380 } 381 else if (sc->wwan_enable_if_radio_on && 382 (wireless & HP_MASK_WWAN_RADIO) && 383 !(wireless & HP_MASK_WWAN_ENABLED)) { 384 acpi_hp_exec_wmi_command(sc->wmi_dev, 385 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 0x404); 386 new_wwan_status = 1; 387 } 388 389 if (new_wlan_status == -1) { 390 new_wlan_status = (wireless & HP_MASK_WLAN_ON_AIR); 391 if ((new_wlan_status?1:0) != sc->was_wlan_on_air) { 392 sc->was_wlan_on_air = sc->was_wlan_on_air?0:1; 393 if (sc->verbose) 394 device_printf(sc->wmi_dev, 395 "WLAN on air changed to %i " 396 "(new_wlan_status is %i)\n", 397 sc->was_wlan_on_air, new_wlan_status); 398 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 399 0xc0+sc->was_wlan_on_air); 400 } 401 } 402 if (new_bluetooth_status == -1) { 403 new_bluetooth_status = (wireless & HP_MASK_BLUETOOTH_ON_AIR); 404 if ((new_bluetooth_status?1:0) != sc->was_bluetooth_on_air) { 405 sc->was_bluetooth_on_air = sc->was_bluetooth_on_air? 406 0:1; 407 if (sc->verbose) 408 device_printf(sc->wmi_dev, 409 "BLUETOOTH on air changed" 410 " to %i (new_bluetooth_status is %i)\n", 411 sc->was_bluetooth_on_air, 412 new_bluetooth_status); 413 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 414 0xd0+sc->was_bluetooth_on_air); 415 } 416 } 417 if (new_wwan_status == -1) { 418 new_wwan_status = (wireless & HP_MASK_WWAN_ON_AIR); 419 if ((new_wwan_status?1:0) != sc->was_wwan_on_air) { 420 sc->was_wwan_on_air = sc->was_wwan_on_air?0:1; 421 if (sc->verbose) 422 device_printf(sc->wmi_dev, 423 "WWAN on air changed to %i" 424 " (new_wwan_status is %i)\n", 425 sc->was_wwan_on_air, new_wwan_status); 426 acpi_UserNotify("HP", ACPI_ROOT_OBJECT, 427 0xe0+sc->was_wwan_on_air); 428 } 429 } 430} 431 432static void 433acpi_hp_identify(driver_t *driver, device_t parent) 434{ 435 436 /* Don't do anything if driver is disabled. */ 437 if (acpi_disabled("hp")) 438 return; 439 440 /* Add only a single device instance. */ 441 if (device_find_child(parent, "acpi_hp", -1) != NULL) 442 return; 443 444 if (BUS_ADD_CHILD(parent, 0, "acpi_hp", -1) == NULL) 445 device_printf(parent, "add acpi_hp child failed\n"); 446} 447 448static int 449acpi_hp_probe(device_t dev) 450{ 451 452 device_set_desc(dev, "HP ACPI-WMI Mapping"); 453 return (0); 454} 455 456static int 457acpi_hp_attach(device_t dev) 458{ 459 struct acpi_hp_softc *sc; 460 int arg; 461 462 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 463 464 sc = device_get_softc(dev); 465 sc->dev = dev; 466 sc->has_notify = 0; 467 sc->has_cmi = 0; 468 sc->bluetooth_enable_if_radio_on = 0; 469 sc->bluetooth_disable_if_radio_off = 0; 470 sc->wlan_enable_if_radio_on = 0; 471 sc->wlan_disable_if_radio_off = 0; 472 sc->wlan_enable_if_radio_on = 0; 473 sc->wlan_disable_if_radio_off = 0; 474 sc->was_wlan_on_air = 0; 475 sc->was_bluetooth_on_air = 0; 476 sc->was_wwan_on_air = 0; 477 sc->cmi_detail = 0; 478 sc->cmi_order_size = -1; 479 sc->verbose = 0; 480 memset(sc->cmi_order, 0, sizeof(sc->cmi_order)); 481 482 sc->wmi_dev = device_get_parent(dev); 483 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 484 ACPI_HP_WMI_BIOS_GUID)) { 485 device_printf(dev, 486 "WMI device does not provide the HP BIOS GUID\n"); 487 return (EINVAL); 488 } 489 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 490 ACPI_HP_WMI_EVENT_GUID)) { 491 device_printf(dev, 492 "HP event GUID detected, installing event handler\n"); 493 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev, 494 ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) { 495 device_printf(dev, 496 "Could not install notification handler!\n"); 497 } 498 else { 499 sc->has_notify = 1; 500 } 501 } 502 if ((sc->has_cmi = 503 ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID) 504 )) { 505 device_printf(dev, "HP CMI GUID detected\n"); 506 } 507 508 if (sc->has_cmi) { 509 sc->hpcmi_dev_t = make_dev(&hpcmi_cdevsw, 0, UID_ROOT, 510 GID_WHEEL, 0644, "hpcmi"); 511 sc->hpcmi_dev_t->si_drv1 = sc; 512 sc->hpcmi_open_pid = 0; 513 sc->hpcmi_bufptr = -1; 514 } 515 516 ACPI_SERIAL_BEGIN(hp); 517 518 sc->sysctl_ctx = device_get_sysctl_ctx(dev); 519 sc->sysctl_tree = device_get_sysctl_tree(dev); 520 for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) { 521 arg = 0; 522 if ((!sc->has_notify && 523 (acpi_hp_sysctls[i].method == 524 ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON || 525 acpi_hp_sysctls[i].method == 526 ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF || 527 acpi_hp_sysctls[i].method == 528 ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON || 529 acpi_hp_sysctls[i].method == 530 ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF || 531 acpi_hp_sysctls[i].method == 532 ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON || 533 acpi_hp_sysctls[i].method == 534 ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) || 535 (arg = acpi_hp_sysctl_get(sc, 536 acpi_hp_sysctls[i].method)) < 0) { 537 continue; 538 } 539 if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) { 540 sc->was_wlan_on_air = arg; 541 } 542 else if (acpi_hp_sysctls[i].method == 543 ACPI_HP_METHOD_BLUETOOTH_ON_AIR) { 544 sc->was_bluetooth_on_air = arg; 545 } 546 else if (acpi_hp_sysctls[i].method == 547 ACPI_HP_METHOD_WWAN_ON_AIR) { 548 sc->was_wwan_on_air = arg; 549 } 550 551 if (acpi_hp_sysctls[i].flag_rdonly != 0) { 552 SYSCTL_ADD_PROC(sc->sysctl_ctx, 553 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 554 acpi_hp_sysctls[i].name, CTLTYPE_INT | CTLFLAG_RD, 555 sc, i, acpi_hp_sysctl, "I", 556 acpi_hp_sysctls[i].description); 557 } else { 558 SYSCTL_ADD_PROC(sc->sysctl_ctx, 559 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 560 acpi_hp_sysctls[i].name, CTLTYPE_INT | CTLFLAG_RW, 561 sc, i, acpi_hp_sysctl, "I", 562 acpi_hp_sysctls[i].description); 563 } 564 } 565 ACPI_SERIAL_END(hp); 566 567 return (0); 568} 569 570static int 571acpi_hp_detach(device_t dev) 572{ 573 struct acpi_hp_softc *sc; 574 575 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 576 sc = device_get_softc(dev); 577 if (sc->has_cmi && sc->hpcmi_open_pid != 0) 578 return (EBUSY); 579 580 if (sc->has_notify) 581 ACPI_WMI_REMOVE_EVENT_HANDLER(dev, ACPI_HP_WMI_EVENT_GUID); 582 583 if (sc->has_cmi) { 584 if (sc->hpcmi_bufptr != -1) { 585 sbuf_delete(&sc->hpcmi_sbuf); 586 sc->hpcmi_bufptr = -1; 587 } 588 sc->hpcmi_open_pid = 0; 589 destroy_dev(sc->hpcmi_dev_t); 590 } 591 592 return (0); 593} 594 595static int 596acpi_hp_sysctl(SYSCTL_HANDLER_ARGS) 597{ 598 struct acpi_hp_softc *sc; 599 int arg; 600 int oldarg; 601 int error = 0; 602 int function; 603 int method; 604 605 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 606 607 sc = (struct acpi_hp_softc *)oidp->oid_arg1; 608 function = oidp->oid_arg2; 609 method = acpi_hp_sysctls[function].method; 610 611 ACPI_SERIAL_BEGIN(hp); 612 arg = acpi_hp_sysctl_get(sc, method); 613 oldarg = arg; 614 error = sysctl_handle_int(oidp, &arg, 0, req); 615 if (!error && req->newptr != NULL) { 616 error = acpi_hp_sysctl_set(sc, method, arg, oldarg); 617 } 618 ACPI_SERIAL_END(hp); 619 620 return (error); 621} 622 623static int 624acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method) 625{ 626 int val = 0; 627 628 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 629 ACPI_SERIAL_ASSERT(hp); 630 631 switch (method) { 632 case ACPI_HP_METHOD_WLAN_ENABLED: 633 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 634 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 635 val = ((val & HP_MASK_WLAN_ENABLED) != 0); 636 break; 637 case ACPI_HP_METHOD_WLAN_RADIO: 638 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 639 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 640 val = ((val & HP_MASK_WLAN_RADIO) != 0); 641 break; 642 case ACPI_HP_METHOD_WLAN_ON_AIR: 643 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 644 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 645 val = ((val & HP_MASK_WLAN_ON_AIR) != 0); 646 break; 647 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 648 val = sc->wlan_enable_if_radio_on; 649 break; 650 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 651 val = sc->wlan_disable_if_radio_off; 652 break; 653 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 654 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 655 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 656 val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0); 657 break; 658 case ACPI_HP_METHOD_BLUETOOTH_RADIO: 659 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 660 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 661 val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0); 662 break; 663 case ACPI_HP_METHOD_BLUETOOTH_ON_AIR: 664 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 665 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 666 val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0); 667 break; 668 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 669 val = sc->bluetooth_enable_if_radio_on; 670 break; 671 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 672 val = sc->bluetooth_disable_if_radio_off; 673 break; 674 case ACPI_HP_METHOD_WWAN_ENABLED: 675 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 676 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 677 val = ((val & HP_MASK_WWAN_ENABLED) != 0); 678 break; 679 case ACPI_HP_METHOD_WWAN_RADIO: 680 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 681 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 682 val = ((val & HP_MASK_WWAN_RADIO) != 0); 683 break; 684 case ACPI_HP_METHOD_WWAN_ON_AIR: 685 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 686 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 687 val = ((val & HP_MASK_WWAN_ON_AIR) != 0); 688 break; 689 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 690 val = sc->wwan_enable_if_radio_on; 691 break; 692 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 693 val = sc->wwan_disable_if_radio_off; 694 break; 695 case ACPI_HP_METHOD_ALS: 696 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 697 ACPI_HP_WMI_ALS_COMMAND, 0, 0); 698 break; 699 case ACPI_HP_METHOD_DISPLAY: 700 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 701 ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0); 702 break; 703 case ACPI_HP_METHOD_HDDTEMP: 704 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 705 ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0); 706 break; 707 case ACPI_HP_METHOD_DOCK: 708 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 709 ACPI_HP_WMI_DOCK_COMMAND, 0, 0); 710 break; 711 case ACPI_HP_METHOD_CMI_DETAIL: 712 val = sc->cmi_detail; 713 break; 714 case ACPI_HP_METHOD_VERBOSE: 715 val = sc->verbose; 716 break; 717 } 718 719 return (val); 720} 721 722static int 723acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg) 724{ 725 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 726 ACPI_SERIAL_ASSERT(hp); 727 728 if (method != ACPI_HP_METHOD_CMI_DETAIL && 729 method != ACPI_HP_METHOD_VERBOSE) 730 arg = arg?1:0; 731 732 if (arg != oldarg) { 733 switch (method) { 734 case ACPI_HP_METHOD_WLAN_ENABLED: 735 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 736 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 737 arg?0x101:0x100)); 738 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 739 sc->wlan_enable_if_radio_on = arg; 740 acpi_hp_evaluate_auto_on_off(sc); 741 break; 742 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 743 sc->wlan_disable_if_radio_off = arg; 744 acpi_hp_evaluate_auto_on_off(sc); 745 break; 746 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 747 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 748 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 749 arg?0x202:0x200)); 750 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 751 sc->bluetooth_enable_if_radio_on = arg; 752 acpi_hp_evaluate_auto_on_off(sc); 753 break; 754 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 755 sc->bluetooth_disable_if_radio_off = arg?1:0; 756 acpi_hp_evaluate_auto_on_off(sc); 757 break; 758 case ACPI_HP_METHOD_WWAN_ENABLED: 759 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 760 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 761 arg?0x404:0x400)); 762 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 763 sc->wwan_enable_if_radio_on = arg?1:0; 764 acpi_hp_evaluate_auto_on_off(sc); 765 break; 766 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 767 sc->wwan_disable_if_radio_off = arg?1:0; 768 acpi_hp_evaluate_auto_on_off(sc); 769 break; 770 case ACPI_HP_METHOD_ALS: 771 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 772 ACPI_HP_WMI_ALS_COMMAND, 1, 773 arg?1:0)); 774 case ACPI_HP_METHOD_CMI_DETAIL: 775 sc->cmi_detail = arg; 776 if ((arg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) != 777 (oldarg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE)) { 778 sc->cmi_order_size = -1; 779 } 780 break; 781 case ACPI_HP_METHOD_VERBOSE: 782 sc->verbose = arg; 783 break; 784 } 785 } 786 787 return (0); 788} 789 790static __inline void 791acpi_hp_free_buffer(ACPI_BUFFER* buf) { 792 if (buf && buf->Pointer) { 793 AcpiOsFree(buf->Pointer); 794 } 795} 796 797static void 798acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context) 799{ 800 device_t dev = context; 801 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 802 803 struct acpi_hp_softc *sc = device_get_softc(dev); 804 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL }; 805 ACPI_OBJECT *obj; 806 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response); 807 obj = (ACPI_OBJECT*) response.Pointer; 808 if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) { 809 if (*((UINT8 *) obj->Buffer.Pointer) == 0x5) { 810 acpi_hp_evaluate_auto_on_off(sc); 811 } 812 } 813 acpi_hp_free_buffer(&response); 814} 815 816static int 817acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, int val) 818{ 819 UINT32 params[5] = { 0x55434553, 820 is_write?2:1, 821 command, 822 is_write?4:0, 823 val}; 824 UINT32* result; 825 ACPI_OBJECT *obj; 826 ACPI_BUFFER in = { sizeof(params), ¶ms }; 827 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 828 int retval; 829 830 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID, 831 0, 0x3, &in, &out))) { 832 acpi_hp_free_buffer(&out); 833 return (-EINVAL); 834 } 835 obj = out.Pointer; 836 if (!obj || obj->Type != ACPI_TYPE_BUFFER) { 837 acpi_hp_free_buffer(&out); 838 return (-EINVAL); 839 } 840 result = (UINT32*) obj->Buffer.Pointer; 841 retval = result[2]; 842 if (result[1] > 0) { 843 retval = result[1]; 844 } 845 acpi_hp_free_buffer(&out); 846 847 return (retval); 848} 849 850static __inline char* 851acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) { 852 int length; 853 854 dst[0] = 0; 855 if (obj->Type == ACPI_TYPE_STRING) { 856 length = obj->String.Length+1; 857 if (length > size) { 858 length = size - 1; 859 } 860 strlcpy(dst, obj->String.Pointer, length); 861 acpi_hp_hex_decode(dst); 862 } 863 864 return (dst); 865} 866 867 868/* 869 * Read BIOS Setting block in instance "instance". 870 * The block returned is ACPI_TYPE_PACKAGE which should contain the following 871 * elements: 872 * Index Meaning 873 * 0 Setting Name [string] 874 * 1 Value (comma separated, asterisk marks the current value) [string] 875 * 2 Path within the bios hierarchy [string] 876 * 3 IsReadOnly [int] 877 * 4 DisplayInUI [int] 878 * 5 RequiresPhysicalPresence [int] 879 * 6 Sequence for ordering within the bios settings (absolute) [int] 880 * 7 Length of prerequisites array [int] 881 * 8..8+[7] PrerequisiteN [string] 882 * 9+[7] Current value (in case of enum) [string] / Array length [int] 883 * 10+[7] Enum length [int] / Array values 884 * 11+[7]ff Enum value at index x [string] 885 */ 886static int 887acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance, 888 char* outbuf, size_t outsize, UINT32* sequence, int detail) 889{ 890 ACPI_OBJECT *obj; 891 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 892 int i; 893 int outlen; 894 int size = 255; 895 int has_enums = 0; 896 int valuebase = 0; 897 char string_buffer[size]; 898 int enumbase; 899 900 outlen = 0; 901 outbuf[0] = 0; 902 if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) { 903 acpi_hp_free_buffer(&out); 904 return (-EINVAL); 905 } 906 obj = out.Pointer; 907 if (!obj || obj->Type != ACPI_TYPE_PACKAGE) { 908 acpi_hp_free_buffer(&out); 909 return (-EINVAL); 910 } 911 912 if (obj->Package.Count >= 8 && 913 obj->Package.Elements[7].Type == ACPI_TYPE_INTEGER) { 914 valuebase = 8 + obj->Package.Elements[7].Integer.Value; 915 } 916 917 /* check if this matches our expectations based on limited knowledge */ 918 if (valuebase > 7 && obj->Package.Count > valuebase + 1 && 919 obj->Package.Elements[0].Type == ACPI_TYPE_STRING && 920 obj->Package.Elements[1].Type == ACPI_TYPE_STRING && 921 obj->Package.Elements[2].Type == ACPI_TYPE_STRING && 922 obj->Package.Elements[3].Type == ACPI_TYPE_INTEGER && 923 obj->Package.Elements[4].Type == ACPI_TYPE_INTEGER && 924 obj->Package.Elements[5].Type == ACPI_TYPE_INTEGER && 925 obj->Package.Elements[6].Type == ACPI_TYPE_INTEGER && 926 obj->Package.Elements[valuebase].Type == ACPI_TYPE_STRING && 927 obj->Package.Elements[valuebase+1].Type == ACPI_TYPE_INTEGER && 928 obj->Package.Count > valuebase + 929 obj->Package.Elements[valuebase+1].Integer.Value 930 ) { 931 enumbase = valuebase + 1; 932 if (detail & ACPI_HP_CMI_DETAIL_PATHS) { 933 strlcat(outbuf, acpi_hp_get_string_from_object( 934 &obj->Package.Elements[2], string_buffer, size), 935 outsize); 936 outlen += 48; 937 while (strlen(outbuf) < outlen) 938 strlcat(outbuf, " ", outsize); 939 } 940 strlcat(outbuf, acpi_hp_get_string_from_object( 941 &obj->Package.Elements[0], string_buffer, size), 942 outsize); 943 outlen += 43; 944 while (strlen(outbuf) < outlen) 945 strlcat(outbuf, " ", outsize); 946 strlcat(outbuf, acpi_hp_get_string_from_object( 947 &obj->Package.Elements[valuebase], string_buffer, 948 size), 949 outsize); 950 outlen += 21; 951 while (strlen(outbuf) < outlen) 952 strlcat(outbuf, " ", outsize); 953 for (i = 0; i < strlen(outbuf); ++i) 954 if (outbuf[i] == '\\') 955 outbuf[i] = '/'; 956 if (detail & ACPI_HP_CMI_DETAIL_ENUMS) { 957 for (i = enumbase + 1; i < enumbase + 1 + 958 obj->Package.Elements[enumbase].Integer.Value; 959 ++i) { 960 acpi_hp_get_string_from_object( 961 &obj->Package.Elements[i], string_buffer, 962 size); 963 if (strlen(string_buffer) > 1 || 964 (strlen(string_buffer) == 1 && 965 string_buffer[0] != ' ')) { 966 if (has_enums) 967 strlcat(outbuf, "/", outsize); 968 else 969 strlcat(outbuf, " (", outsize); 970 strlcat(outbuf, string_buffer, outsize); 971 has_enums = 1; 972 } 973 } 974 } 975 if (has_enums) 976 strlcat(outbuf, ")", outsize); 977 if (detail & ACPI_HP_CMI_DETAIL_FLAGS) { 978 strlcat(outbuf, obj->Package.Elements[3].Integer.Value? 979 " [ReadOnly]":"", outsize); 980 strlcat(outbuf, obj->Package.Elements[4].Integer.Value? 981 "":" [NOUI]", outsize); 982 strlcat(outbuf, obj->Package.Elements[5].Integer.Value? 983 " [RPP]":"", outsize); 984 } 985 *sequence = (UINT32) obj->Package.Elements[6].Integer.Value; 986 } 987 acpi_hp_free_buffer(&out); 988 989 return (0); 990} 991 992 993 994/* 995 * Convert given two digit hex string (hexin) to an UINT8 referenced 996 * by byteout. 997 * Return != 0 if the was a problem (invalid input) 998 */ 999static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout) 1000{ 1001 unsigned int hi; 1002 unsigned int lo; 1003 1004 hi = hexin[0]; 1005 lo = hexin[1]; 1006 if ('0' <= hi && hi <= '9') 1007 hi -= '0'; 1008 else if ('A' <= hi && hi <= 'F') 1009 hi -= ('A' - 10); 1010 else if ('a' <= hi && hi <= 'f') 1011 hi -= ('a' - 10); 1012 else 1013 return (1); 1014 if ('0' <= lo && lo <= '9') 1015 lo -= '0'; 1016 else if ('A' <= lo && lo <= 'F') 1017 lo -= ('A' - 10); 1018 else if ('a' <= lo && lo <= 'f') 1019 lo -= ('a' - 10); 1020 else 1021 return (1); 1022 *byteout = (hi << 4) + lo; 1023 1024 return (0); 1025} 1026 1027 1028static void 1029acpi_hp_hex_decode(char* buffer) 1030{ 1031 int i; 1032 int length = strlen(buffer); 1033 UINT8 *uin; 1034 UINT8 uout; 1035 1036 if (((int)length/2)*2 == length || length < 10) return; 1037 1038 for (i = 0; i<length; ++i) { 1039 if (!((i+1)%3)) { 1040 if (buffer[i] != ' ') 1041 return; 1042 } 1043 else 1044 if (!((buffer[i] >= '0' && buffer[i] <= '9') || 1045 (buffer[i] >= 'A' && buffer[i] <= 'F'))) 1046 return; 1047 } 1048 1049 for (i = 0; i<length; i += 3) { 1050 uin = &buffer[i]; 1051 uout = 0; 1052 acpi_hp_hex_to_int(uin, &uout); 1053 buffer[i/3] = (char) uout; 1054 } 1055 buffer[(length+1)/3] = 0; 1056} 1057 1058 1059/* 1060 * open hpcmi device 1061 */ 1062static int 1063acpi_hp_hpcmi_open(struct cdev* dev, int flags, int mode, struct thread *td) 1064{ 1065 struct acpi_hp_softc *sc; 1066 int ret; 1067 1068 if (dev == NULL || dev->si_drv1 == NULL) 1069 return (EBADF); 1070 sc = dev->si_drv1; 1071 1072 ACPI_SERIAL_BEGIN(hp); 1073 if (sc->hpcmi_open_pid != 0) { 1074 ret = EBUSY; 1075 } 1076 else { 1077 if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND) 1078 == NULL) { 1079 ret = ENXIO; 1080 } else { 1081 sc->hpcmi_open_pid = td->td_proc->p_pid; 1082 sc->hpcmi_bufptr = 0; 1083 ret = 0; 1084 } 1085 } 1086 ACPI_SERIAL_END(hp); 1087 1088 return (ret); 1089} 1090 1091/* 1092 * close hpcmi device 1093 */ 1094static int 1095acpi_hp_hpcmi_close(struct cdev* dev, int flags, int mode, struct thread *td) 1096{ 1097 struct acpi_hp_softc *sc; 1098 int ret; 1099 1100 if (dev == NULL || dev->si_drv1 == NULL) 1101 return (EBADF); 1102 sc = dev->si_drv1; 1103 1104 ACPI_SERIAL_BEGIN(hp); 1105 if (sc->hpcmi_open_pid == 0) { 1106 ret = EBADF; 1107 } 1108 else { 1109 if (sc->hpcmi_bufptr != -1) { 1110 sbuf_delete(&sc->hpcmi_sbuf); 1111 sc->hpcmi_bufptr = -1; 1112 } 1113 sc->hpcmi_open_pid = 0; 1114 ret = 0; 1115 } 1116 ACPI_SERIAL_END(hp); 1117 1118 return (ret); 1119} 1120 1121/* 1122 * Read from hpcmi bios information 1123 */ 1124static int 1125acpi_hp_hpcmi_read(struct cdev *dev, struct uio *buf, int flag) 1126{ 1127 struct acpi_hp_softc *sc; 1128 int pos, i, l, ret; 1129 UINT8 instance; 1130 UINT8 maxInstance; 1131 UINT32 sequence; 1132 int linesize = 1025; 1133 char line[linesize]; 1134 1135 if (dev == NULL || dev->si_drv1 == NULL) 1136 return (EBADF); 1137 sc = dev->si_drv1; 1138 1139 ACPI_SERIAL_BEGIN(hp); 1140 if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid 1141 || sc->hpcmi_bufptr == -1) { 1142 ret = EBADF; 1143 } 1144 else { 1145 if (!sbuf_done(&sc->hpcmi_sbuf)) { 1146 if (sc->cmi_order_size < 0) { 1147 maxInstance = sc->has_cmi; 1148 if (!(sc->cmi_detail & 1149 ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) && 1150 maxInstance > 0) { 1151 maxInstance--; 1152 } 1153 sc->cmi_order_size = 0; 1154 for (instance = 0; instance < maxInstance; 1155 ++instance) { 1156 if (acpi_hp_get_cmi_block(sc->wmi_dev, 1157 ACPI_HP_WMI_CMI_GUID, instance, 1158 line, linesize, &sequence, 1159 sc->cmi_detail)) { 1160 instance = maxInstance; 1161 } 1162 else { 1163 pos = sc->cmi_order_size; 1164 for (i=0; 1165 i<sc->cmi_order_size && i<127; 1166 ++i) { 1167 if (sc->cmi_order[i].sequence > sequence) { 1168 pos = i; 1169 break; 1170 } 1171 } 1172 for (i=sc->cmi_order_size; 1173 i>pos; 1174 --i) { 1175 sc->cmi_order[i].sequence = 1176 sc->cmi_order[i-1].sequence; 1177 sc->cmi_order[i].instance = 1178 sc->cmi_order[i-1].instance; 1179 } 1180 sc->cmi_order[pos].sequence = 1181 sequence; 1182 sc->cmi_order[pos].instance = 1183 instance; 1184 sc->cmi_order_size++; 1185 } 1186 } 1187 } 1188 for (i=0; i<sc->cmi_order_size; ++i) { 1189 if (!acpi_hp_get_cmi_block(sc->wmi_dev, 1190 ACPI_HP_WMI_CMI_GUID, 1191 sc->cmi_order[i].instance, line, linesize, 1192 &sequence, sc->cmi_detail)) { 1193 sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line); 1194 } 1195 } 1196 sbuf_finish(&sc->hpcmi_sbuf); 1197 } 1198 if (sbuf_len(&sc->hpcmi_sbuf) <= 0) { 1199 sbuf_delete(&sc->hpcmi_sbuf); 1200 sc->hpcmi_bufptr = -1; 1201 sc->hpcmi_open_pid = 0; 1202 ret = ENOMEM; 1203 } else { 1204 l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) - 1205 sc->hpcmi_bufptr); 1206 ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) + 1207 sc->hpcmi_bufptr, l, buf) : 0; 1208 sc->hpcmi_bufptr += l; 1209 } 1210 } 1211 ACPI_SERIAL_END(hp); 1212 1213 return (ret); 1214} 1215