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 * $FreeBSD: src/sys/dev/acpi_support/acpi_hp.c,v 1.7 2010/09/11 08:09:14 avg Exp $ 27 */ 28 29 /* 30 * Driver for extra ACPI-controlled features found on HP laptops 31 * that use a WMI enabled BIOS (e.g. HP Compaq 8510p and 6510p). 32 * Allows to control and read status of integrated hardware and read 33 * BIOS settings through CMI. 34 * Inspired by the hp-wmi driver, which implements a subset of these 35 * features (hotkeys) on Linux. 36 * 37 * HP CMI whitepaper: 38 * http://h20331.www2.hp.com/Hpsub/downloads/cmi_whitepaper.pdf 39 * wmi-hp for Linux: 40 * http://www.kernel.org 41 * WMI and ACPI: 42 * http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx 43 */ 44 45 #include "opt_acpi.h" 46 #include <sys/param.h> 47 #include <sys/conf.h> 48 #include <sys/uio.h> 49 #include <sys/proc.h> 50 #include <sys/kernel.h> 51 #include <sys/bus.h> 52 #include <sys/sbuf.h> 53 #include <sys/module.h> 54 #include <sys/sysctl.h> 55 #include <sys/device.h> 56 57 #include "acpi.h" 58 #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 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 111 112 struct acpi_hp_inst_seq_pair { 113 UINT32 sequence; /* sequence number as suggested by cmi bios */ 114 UINT8 instance; /* object instance on guid */ 115 }; 116 117 struct 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 }; 150 151 static 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 }; 288 289 ACPI_SERIAL_DECL(hp, "HP ACPI-WMI Mapping"); 290 291 static void acpi_hp_identify(driver_t *driver, device_t parent); 292 static int acpi_hp_probe(device_t dev); 293 static int acpi_hp_attach(device_t dev); 294 static int acpi_hp_detach(device_t dev); 295 296 static void acpi_hp_evaluate_auto_on_off(struct acpi_hp_softc* sc); 297 static int acpi_hp_sysctl(SYSCTL_HANDLER_ARGS); 298 static int acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, 299 int arg, int oldarg); 300 static int acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method); 301 static int acpi_hp_exec_wmi_command(device_t wmi_dev, int command, 302 int is_write, int val); 303 static void acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context); 304 static 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); 307 static void acpi_hp_hex_decode(char* buffer); 308 309 static d_open_t acpi_hp_hpcmi_open; 310 static d_close_t acpi_hp_hpcmi_close; 311 static d_read_t acpi_hp_hpcmi_read; 312 313 /* handler /dev/hpcmi device */ 314 static struct dev_ops hpcmi_ops = { 315 { .name = "hpcmi" }, 316 .d_open = acpi_hp_hpcmi_open, 317 .d_close = acpi_hp_hpcmi_close, 318 .d_read = acpi_hp_hpcmi_read, 319 }; 320 321 static device_method_t acpi_hp_methods[] = { 322 DEVMETHOD(device_identify, acpi_hp_identify), 323 DEVMETHOD(device_probe, acpi_hp_probe), 324 DEVMETHOD(device_attach, acpi_hp_attach), 325 DEVMETHOD(device_detach, acpi_hp_detach), 326 DEVMETHOD_END 327 }; 328 329 static driver_t acpi_hp_driver = { 330 "acpi_hp", 331 acpi_hp_methods, 332 sizeof(struct acpi_hp_softc), 333 }; 334 335 static devclass_t acpi_hp_devclass; 336 337 DRIVER_MODULE(acpi_hp, acpi_wmi, acpi_hp_driver, acpi_hp_devclass, 338 NULL, NULL); 339 MODULE_VERSION(acpi_hp, 1); 340 MODULE_DEPEND(acpi_hp, acpi_wmi, 1, 1, 1); 341 MODULE_DEPEND(acpi_hp, acpi, 1, 1, 1); 342 343 static void 344 acpi_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 } 442 443 static void 444 acpi_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, parent, 0, "acpi_hp", -1) == NULL) 456 device_printf(parent, "add acpi_hp child failed\n"); 457 } 458 459 static int 460 acpi_hp_probe(device_t dev) 461 { 462 463 device_set_desc(dev, "HP ACPI-WMI Mapping"); 464 return (0); 465 } 466 467 static int 468 acpi_hp_attach(device_t dev) 469 { 470 struct acpi_hp_softc *sc; 471 struct acpi_softc *acpi_sc; 472 int arg; 473 474 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 475 476 sc = device_get_softc(dev); 477 sc->dev = dev; 478 sc->has_notify = 0; 479 sc->has_cmi = 0; 480 sc->bluetooth_enable_if_radio_on = 0; 481 sc->bluetooth_disable_if_radio_off = 0; 482 sc->wlan_enable_if_radio_on = 0; 483 sc->wlan_disable_if_radio_off = 0; 484 sc->wlan_enable_if_radio_on = 0; 485 sc->wlan_disable_if_radio_off = 0; 486 sc->was_wlan_on_air = 0; 487 sc->was_bluetooth_on_air = 0; 488 sc->was_wwan_on_air = 0; 489 sc->cmi_detail = 0; 490 sc->cmi_order_size = -1; 491 sc->verbose = 0; 492 memset(sc->cmi_order, 0, sizeof(sc->cmi_order)); 493 sc->wmi_dev = device_get_parent(dev); 494 acpi_sc = acpi_device_get_parent_softc(sc->wmi_dev); 495 496 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 497 ACPI_HP_WMI_BIOS_GUID)) { 498 device_printf(dev, 499 "WMI device does not provide the HP BIOS GUID\n"); 500 return (EINVAL); 501 } 502 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 503 ACPI_HP_WMI_EVENT_GUID)) { 504 device_printf(dev, 505 "HP event GUID detected, installing event handler\n"); 506 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev, 507 ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) { 508 device_printf(dev, 509 "Could not install notification handler!\n"); 510 } 511 else { 512 sc->has_notify = 1; 513 } 514 } 515 if ((sc->has_cmi = 516 ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID) 517 )) { 518 device_printf(dev, "HP CMI GUID detected\n"); 519 } 520 521 if (sc->has_cmi) { 522 sc->hpcmi_dev_t = make_dev(&hpcmi_ops, 0, UID_ROOT, 523 GID_WHEEL, 0644, "hpcmi"); 524 sc->hpcmi_dev_t->si_drv1 = sc; 525 sc->hpcmi_open_pid = 0; 526 sc->hpcmi_bufptr = -1; 527 } 528 529 ACPI_SERIAL_BEGIN(hp); 530 531 sysctl_ctx_init(&sc->sysctl_ctx); 532 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx, 533 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO, 534 "hp", CTLFLAG_RD, 0, ""); 535 536 for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) { 537 arg = 0; 538 if ((!sc->has_notify && 539 (acpi_hp_sysctls[i].method == 540 ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON || 541 acpi_hp_sysctls[i].method == 542 ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF || 543 acpi_hp_sysctls[i].method == 544 ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON || 545 acpi_hp_sysctls[i].method == 546 ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF || 547 acpi_hp_sysctls[i].method == 548 ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON || 549 acpi_hp_sysctls[i].method == 550 ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) || 551 (arg = acpi_hp_sysctl_get(sc, 552 acpi_hp_sysctls[i].method)) < 0) { 553 continue; 554 } 555 if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) { 556 sc->was_wlan_on_air = arg; 557 } 558 else if (acpi_hp_sysctls[i].method == 559 ACPI_HP_METHOD_BLUETOOTH_ON_AIR) { 560 sc->was_bluetooth_on_air = arg; 561 } 562 else if (acpi_hp_sysctls[i].method == 563 ACPI_HP_METHOD_WWAN_ON_AIR) { 564 sc->was_wwan_on_air = arg; 565 } 566 567 SYSCTL_ADD_PROC(&sc->sysctl_ctx, 568 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 569 acpi_hp_sysctls[i].name, acpi_hp_sysctls[i].access, 570 sc, i, acpi_hp_sysctl, "I", 571 acpi_hp_sysctls[i].description); 572 } 573 ACPI_SERIAL_END(hp); 574 575 return (0); 576 } 577 578 static int 579 acpi_hp_detach(device_t dev) 580 { 581 int ret; 582 583 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 584 struct acpi_hp_softc *sc = device_get_softc(dev); 585 if (sc->has_cmi && sc->hpcmi_open_pid != 0) { 586 ret = EBUSY; 587 } 588 else { 589 if (sc->has_notify) { 590 ACPI_WMI_REMOVE_EVENT_HANDLER(dev, 591 ACPI_HP_WMI_EVENT_GUID); 592 } 593 if (sc->hpcmi_bufptr != -1) { 594 sbuf_delete(&sc->hpcmi_sbuf); 595 sc->hpcmi_bufptr = -1; 596 } 597 sc->hpcmi_open_pid = 0; 598 destroy_dev(sc->hpcmi_dev_t); 599 ret = 0; 600 } 601 602 return (ret); 603 } 604 605 static int 606 acpi_hp_sysctl(SYSCTL_HANDLER_ARGS) 607 { 608 struct acpi_hp_softc *sc; 609 int arg; 610 int oldarg; 611 int error = 0; 612 int function; 613 int method; 614 615 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 616 617 sc = (struct acpi_hp_softc *)oidp->oid_arg1; 618 function = oidp->oid_arg2; 619 method = acpi_hp_sysctls[function].method; 620 621 ACPI_SERIAL_BEGIN(hp); 622 arg = acpi_hp_sysctl_get(sc, method); 623 oldarg = arg; 624 error = sysctl_handle_int(oidp, &arg, 0, req); 625 if (!error && req->newptr != NULL) { 626 error = acpi_hp_sysctl_set(sc, method, arg, oldarg); 627 } 628 ACPI_SERIAL_END(hp); 629 630 return (error); 631 } 632 633 static int 634 acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method) 635 { 636 int val = 0; 637 638 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 639 ACPI_SERIAL_ASSERT(hp); 640 641 switch (method) { 642 case ACPI_HP_METHOD_WLAN_ENABLED: 643 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 644 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 645 val = ((val & HP_MASK_WLAN_ENABLED) != 0); 646 break; 647 case ACPI_HP_METHOD_WLAN_RADIO: 648 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 649 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 650 val = ((val & HP_MASK_WLAN_RADIO) != 0); 651 break; 652 case ACPI_HP_METHOD_WLAN_ON_AIR: 653 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 654 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 655 val = ((val & HP_MASK_WLAN_ON_AIR) != 0); 656 break; 657 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 658 val = sc->wlan_enable_if_radio_on; 659 break; 660 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 661 val = sc->wlan_disable_if_radio_off; 662 break; 663 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 664 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 665 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 666 val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0); 667 break; 668 case ACPI_HP_METHOD_BLUETOOTH_RADIO: 669 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 670 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 671 val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0); 672 break; 673 case ACPI_HP_METHOD_BLUETOOTH_ON_AIR: 674 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 675 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 676 val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0); 677 break; 678 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 679 val = sc->bluetooth_enable_if_radio_on; 680 break; 681 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 682 val = sc->bluetooth_disable_if_radio_off; 683 break; 684 case ACPI_HP_METHOD_WWAN_ENABLED: 685 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 686 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 687 val = ((val & HP_MASK_WWAN_ENABLED) != 0); 688 break; 689 case ACPI_HP_METHOD_WWAN_RADIO: 690 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 691 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 692 val = ((val & HP_MASK_WWAN_RADIO) != 0); 693 break; 694 case ACPI_HP_METHOD_WWAN_ON_AIR: 695 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 696 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 697 val = ((val & HP_MASK_WWAN_ON_AIR) != 0); 698 break; 699 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 700 val = sc->wwan_enable_if_radio_on; 701 break; 702 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 703 val = sc->wwan_disable_if_radio_off; 704 break; 705 case ACPI_HP_METHOD_ALS: 706 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 707 ACPI_HP_WMI_ALS_COMMAND, 0, 0); 708 break; 709 case ACPI_HP_METHOD_DISPLAY: 710 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 711 ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0); 712 break; 713 case ACPI_HP_METHOD_HDDTEMP: 714 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 715 ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0); 716 break; 717 case ACPI_HP_METHOD_DOCK: 718 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 719 ACPI_HP_WMI_DOCK_COMMAND, 0, 0); 720 break; 721 case ACPI_HP_METHOD_CMI_DETAIL: 722 val = sc->cmi_detail; 723 break; 724 case ACPI_HP_METHOD_VERBOSE: 725 val = sc->verbose; 726 break; 727 } 728 729 return (val); 730 } 731 732 static int 733 acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg) 734 { 735 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 736 ACPI_SERIAL_ASSERT(hp); 737 738 if (method != ACPI_HP_METHOD_CMI_DETAIL && 739 method != ACPI_HP_METHOD_VERBOSE) 740 arg = arg?1:0; 741 742 if (arg != oldarg) { 743 switch (method) { 744 case ACPI_HP_METHOD_WLAN_ENABLED: 745 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 746 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 747 arg?0x101:0x100)); 748 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 749 sc->wlan_enable_if_radio_on = arg; 750 acpi_hp_evaluate_auto_on_off(sc); 751 break; 752 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 753 sc->wlan_disable_if_radio_off = arg; 754 acpi_hp_evaluate_auto_on_off(sc); 755 break; 756 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 757 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 758 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 759 arg?0x202:0x200)); 760 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 761 sc->bluetooth_enable_if_radio_on = arg; 762 acpi_hp_evaluate_auto_on_off(sc); 763 break; 764 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 765 sc->bluetooth_disable_if_radio_off = arg?1:0; 766 acpi_hp_evaluate_auto_on_off(sc); 767 break; 768 case ACPI_HP_METHOD_WWAN_ENABLED: 769 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 770 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 771 arg?0x404:0x400)); 772 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 773 sc->wwan_enable_if_radio_on = arg?1:0; 774 acpi_hp_evaluate_auto_on_off(sc); 775 break; 776 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 777 sc->wwan_disable_if_radio_off = arg?1:0; 778 acpi_hp_evaluate_auto_on_off(sc); 779 break; 780 case ACPI_HP_METHOD_ALS: 781 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 782 ACPI_HP_WMI_ALS_COMMAND, 1, 783 arg?1:0)); 784 case ACPI_HP_METHOD_CMI_DETAIL: 785 sc->cmi_detail = arg; 786 if ((arg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) != 787 (oldarg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE)) { 788 sc->cmi_order_size = -1; 789 } 790 break; 791 case ACPI_HP_METHOD_VERBOSE: 792 sc->verbose = arg; 793 break; 794 } 795 } 796 797 return (0); 798 } 799 800 static __inline void 801 acpi_hp_free_buffer(ACPI_BUFFER* buf) { 802 if (buf && buf->Pointer) { 803 AcpiOsFree(buf->Pointer); 804 } 805 } 806 807 static void 808 acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context) 809 { 810 device_t dev = context; 811 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 812 813 struct acpi_hp_softc *sc = device_get_softc(dev); 814 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL }; 815 ACPI_OBJECT *obj; 816 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response); 817 obj = (ACPI_OBJECT*) response.Pointer; 818 if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) { 819 if (*((UINT8 *) obj->Buffer.Pointer) == 0x5) { 820 acpi_hp_evaluate_auto_on_off(sc); 821 } 822 } 823 acpi_hp_free_buffer(&response); 824 } 825 826 static int 827 acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, int val) 828 { 829 UINT32 params[5] = { 0x55434553, 830 is_write?2:1, 831 command, 832 is_write?4:0, 833 val}; 834 UINT32* result; 835 ACPI_OBJECT *obj; 836 ACPI_BUFFER in = { sizeof(params), ¶ms }; 837 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 838 int retval; 839 840 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID, 841 0, 0x3, &in, &out))) { 842 acpi_hp_free_buffer(&out); 843 return (-EINVAL); 844 } 845 obj = out.Pointer; 846 if (!obj || obj->Type != ACPI_TYPE_BUFFER) { 847 acpi_hp_free_buffer(&out); 848 return (-EINVAL); 849 } 850 result = (UINT32*) obj->Buffer.Pointer; 851 retval = result[2]; 852 if (result[1] > 0) { 853 retval = result[1]; 854 } 855 acpi_hp_free_buffer(&out); 856 857 return (retval); 858 } 859 860 static __inline char* 861 acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) { 862 int length; 863 864 dst[0] = 0; 865 if (obj->Type == ACPI_TYPE_STRING) { 866 length = obj->String.Length+1; 867 if (length > size) { 868 length = size - 1; 869 } 870 strlcpy(dst, obj->String.Pointer, length); 871 acpi_hp_hex_decode(dst); 872 } 873 874 return (dst); 875 } 876 877 878 /* 879 * Read BIOS Setting block in instance "instance". 880 * The block returned is ACPI_TYPE_PACKAGE which should contain the following 881 * elements: 882 * Index Meaning 883 * 0 Setting Name [string] 884 * 1 Value (comma separated, asterisk marks the current value) [string] 885 * 2 Path within the bios hierarchy [string] 886 * 3 IsReadOnly [int] 887 * 4 DisplayInUI [int] 888 * 5 RequiresPhysicalPresence [int] 889 * 6 Sequence for ordering within the bios settings (absolute) [int] 890 * 7 Length of prerequisites array [int] 891 * 8..8+[7] PrerequisiteN [string] 892 * 9+[7] Current value (in case of enum) [string] / Array length [int] 893 * 10+[7] Enum length [int] / Array values 894 * 11+[7]ff Enum value at index x [string] 895 */ 896 static int 897 acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance, 898 char* outbuf, size_t outsize, UINT32* sequence, int detail) 899 { 900 ACPI_OBJECT *obj; 901 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 902 int i; 903 int outlen; 904 int size = 255; 905 int has_enums = 0; 906 int valuebase = 0; 907 char string_buffer[size]; 908 int enumbase; 909 910 outlen = 0; 911 outbuf[0] = 0; 912 if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) { 913 acpi_hp_free_buffer(&out); 914 return (-EINVAL); 915 } 916 obj = out.Pointer; 917 if (!obj || obj->Type != ACPI_TYPE_PACKAGE) { 918 acpi_hp_free_buffer(&out); 919 return (-EINVAL); 920 } 921 922 if (obj->Package.Count >= 8 && 923 obj->Package.Elements[7].Type == ACPI_TYPE_INTEGER) { 924 valuebase = 8 + obj->Package.Elements[7].Integer.Value; 925 } 926 927 /* check if this matches our expectations based on limited knowledge */ 928 if (valuebase > 7 && obj->Package.Count > valuebase + 1 && 929 obj->Package.Elements[0].Type == ACPI_TYPE_STRING && 930 obj->Package.Elements[1].Type == ACPI_TYPE_STRING && 931 obj->Package.Elements[2].Type == ACPI_TYPE_STRING && 932 obj->Package.Elements[3].Type == ACPI_TYPE_INTEGER && 933 obj->Package.Elements[4].Type == ACPI_TYPE_INTEGER && 934 obj->Package.Elements[5].Type == ACPI_TYPE_INTEGER && 935 obj->Package.Elements[6].Type == ACPI_TYPE_INTEGER && 936 obj->Package.Elements[valuebase].Type == ACPI_TYPE_STRING && 937 obj->Package.Elements[valuebase+1].Type == ACPI_TYPE_INTEGER && 938 obj->Package.Count > valuebase + 939 obj->Package.Elements[valuebase+1].Integer.Value 940 ) { 941 enumbase = valuebase + 1; 942 if (detail & ACPI_HP_CMI_DETAIL_PATHS) { 943 strlcat(outbuf, acpi_hp_get_string_from_object( 944 &obj->Package.Elements[2], string_buffer, size), 945 outsize); 946 outlen += 48; 947 while (strlen(outbuf) < outlen) 948 strlcat(outbuf, " ", outsize); 949 } 950 strlcat(outbuf, acpi_hp_get_string_from_object( 951 &obj->Package.Elements[0], string_buffer, size), 952 outsize); 953 outlen += 43; 954 while (strlen(outbuf) < outlen) 955 strlcat(outbuf, " ", outsize); 956 strlcat(outbuf, acpi_hp_get_string_from_object( 957 &obj->Package.Elements[valuebase], string_buffer, 958 size), 959 outsize); 960 outlen += 21; 961 while (strlen(outbuf) < outlen) 962 strlcat(outbuf, " ", outsize); 963 for (i = 0; i < strlen(outbuf); ++i) 964 if (outbuf[i] == '\\') 965 outbuf[i] = '/'; 966 if (detail & ACPI_HP_CMI_DETAIL_ENUMS) { 967 for (i = enumbase + 1; i < enumbase + 1 + 968 obj->Package.Elements[enumbase].Integer.Value; 969 ++i) { 970 acpi_hp_get_string_from_object( 971 &obj->Package.Elements[i], string_buffer, 972 size); 973 if (strlen(string_buffer) > 1 || 974 (strlen(string_buffer) == 1 && 975 string_buffer[0] != ' ')) { 976 if (has_enums) 977 strlcat(outbuf, "/", outsize); 978 else 979 strlcat(outbuf, " (", outsize); 980 strlcat(outbuf, string_buffer, outsize); 981 has_enums = 1; 982 } 983 } 984 } 985 if (has_enums) 986 strlcat(outbuf, ")", outsize); 987 if (detail & ACPI_HP_CMI_DETAIL_FLAGS) { 988 strlcat(outbuf, obj->Package.Elements[3].Integer.Value? 989 " [ReadOnly]":"", outsize); 990 strlcat(outbuf, obj->Package.Elements[4].Integer.Value? 991 "":" [NOUI]", outsize); 992 strlcat(outbuf, obj->Package.Elements[5].Integer.Value? 993 " [RPP]":"", outsize); 994 } 995 *sequence = (UINT32) obj->Package.Elements[6].Integer.Value; 996 } 997 acpi_hp_free_buffer(&out); 998 999 return (0); 1000 } 1001 1002 1003 1004 /* 1005 * Convert given two digit hex string (hexin) to an UINT8 referenced 1006 * by byteout. 1007 * Return != 0 if the was a problem (invalid input) 1008 */ 1009 static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout) 1010 { 1011 unsigned int hi; 1012 unsigned int lo; 1013 1014 hi = hexin[0]; 1015 lo = hexin[1]; 1016 if ('0' <= hi && hi <= '9') 1017 hi -= '0'; 1018 else if ('A' <= hi && hi <= 'F') 1019 hi -= ('A' - 10); 1020 else if ('a' <= hi && hi <= 'f') 1021 hi -= ('a' - 10); 1022 else 1023 return (1); 1024 if ('0' <= lo && lo <= '9') 1025 lo -= '0'; 1026 else if ('A' <= lo && lo <= 'F') 1027 lo -= ('A' - 10); 1028 else if ('a' <= lo && lo <= 'f') 1029 lo -= ('a' - 10); 1030 else 1031 return (1); 1032 *byteout = (hi << 4) + lo; 1033 1034 return (0); 1035 } 1036 1037 1038 static void 1039 acpi_hp_hex_decode(char* buffer) 1040 { 1041 int i; 1042 int length = strlen(buffer); 1043 UINT8 *uin; 1044 UINT8 uout; 1045 1046 if (((int)length/2)*2 == length || length < 10) return; 1047 1048 for (i = 0; i<length; ++i) { 1049 if (!((i+1)%3)) { 1050 if (buffer[i] != ' ') 1051 return; 1052 } 1053 else 1054 if (!((buffer[i] >= '0' && buffer[i] <= '9') || 1055 (buffer[i] >= 'A' && buffer[i] <= 'F'))) 1056 return; 1057 } 1058 1059 for (i = 0; i<length; i += 3) { 1060 uin = &buffer[i]; 1061 uout = 0; 1062 acpi_hp_hex_to_int(uin, &uout); 1063 buffer[i/3] = (char) uout; 1064 } 1065 buffer[(length+1)/3] = 0; 1066 } 1067 1068 1069 /* 1070 * open hpcmi device 1071 */ 1072 static int 1073 acpi_hp_hpcmi_open(struct dev_open_args *ap) 1074 { 1075 struct acpi_hp_softc *sc; 1076 int ret; 1077 struct cdev *dev = ap->a_head.a_dev; 1078 struct thread *td = curthread; 1079 1080 if (dev == NULL || dev->si_drv1 == NULL) 1081 return (EBADF); 1082 sc = dev->si_drv1; 1083 1084 ACPI_SERIAL_BEGIN(hp); 1085 if (sc->hpcmi_open_pid != 0) { 1086 ret = EBUSY; 1087 } 1088 else { 1089 if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND) 1090 == NULL) { 1091 ret = ENXIO; 1092 } else { 1093 sc->hpcmi_open_pid = td->td_proc->p_pid; 1094 sc->hpcmi_bufptr = 0; 1095 ret = 0; 1096 } 1097 } 1098 ACPI_SERIAL_END(hp); 1099 1100 return (ret); 1101 } 1102 1103 /* 1104 * close hpcmi device 1105 */ 1106 static int 1107 acpi_hp_hpcmi_close(struct dev_close_args *ap) 1108 { 1109 struct acpi_hp_softc *sc; 1110 int ret; 1111 struct cdev *dev = ap->a_head.a_dev; 1112 1113 if (dev == NULL || dev->si_drv1 == NULL) 1114 return (EBADF); 1115 sc = dev->si_drv1; 1116 1117 ACPI_SERIAL_BEGIN(hp); 1118 if (sc->hpcmi_open_pid == 0) { 1119 ret = EBADF; 1120 } 1121 else { 1122 if (sc->hpcmi_bufptr != -1) { 1123 sbuf_delete(&sc->hpcmi_sbuf); 1124 sc->hpcmi_bufptr = -1; 1125 } 1126 sc->hpcmi_open_pid = 0; 1127 ret = 0; 1128 } 1129 ACPI_SERIAL_END(hp); 1130 1131 return (ret); 1132 } 1133 1134 /* 1135 * Read from hpcmi bios information 1136 */ 1137 static int 1138 acpi_hp_hpcmi_read(struct dev_read_args *ap) 1139 { 1140 struct acpi_hp_softc *sc; 1141 int pos, i, l, ret; 1142 UINT8 instance; 1143 UINT8 maxInstance; 1144 UINT32 sequence; 1145 int linesize = 1025; 1146 char line[linesize]; 1147 struct cdev *dev = ap->a_head.a_dev; 1148 struct uio *buf = ap->a_uio; 1149 1150 if (dev == NULL || dev->si_drv1 == NULL) 1151 return (EBADF); 1152 sc = dev->si_drv1; 1153 1154 ACPI_SERIAL_BEGIN(hp); 1155 if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid 1156 || sc->hpcmi_bufptr == -1) { 1157 ret = EBADF; 1158 } 1159 else { 1160 if (!sbuf_done(&sc->hpcmi_sbuf)) { 1161 if (sc->cmi_order_size < 0) { 1162 maxInstance = sc->has_cmi; 1163 if (!(sc->cmi_detail & 1164 ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) && 1165 maxInstance > 0) { 1166 maxInstance--; 1167 } 1168 sc->cmi_order_size = 0; 1169 for (instance = 0; instance < maxInstance; 1170 ++instance) { 1171 if (acpi_hp_get_cmi_block(sc->wmi_dev, 1172 ACPI_HP_WMI_CMI_GUID, instance, 1173 line, linesize, &sequence, 1174 sc->cmi_detail)) { 1175 instance = maxInstance; 1176 } 1177 else { 1178 pos = sc->cmi_order_size; 1179 for (i=0; 1180 i<sc->cmi_order_size && i<127; 1181 ++i) { 1182 if (sc->cmi_order[i].sequence > sequence) { 1183 pos = i; 1184 break; 1185 } 1186 } 1187 for (i=sc->cmi_order_size; 1188 i>pos; 1189 --i) { 1190 sc->cmi_order[i].sequence = 1191 sc->cmi_order[i-1].sequence; 1192 sc->cmi_order[i].instance = 1193 sc->cmi_order[i-1].instance; 1194 } 1195 sc->cmi_order[pos].sequence = 1196 sequence; 1197 sc->cmi_order[pos].instance = 1198 instance; 1199 sc->cmi_order_size++; 1200 } 1201 } 1202 } 1203 for (i=0; i<sc->cmi_order_size; ++i) { 1204 if (!acpi_hp_get_cmi_block(sc->wmi_dev, 1205 ACPI_HP_WMI_CMI_GUID, 1206 sc->cmi_order[i].instance, line, linesize, 1207 &sequence, sc->cmi_detail)) { 1208 sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line); 1209 } 1210 } 1211 sbuf_finish(&sc->hpcmi_sbuf); 1212 } 1213 if (sbuf_len(&sc->hpcmi_sbuf) <= 0) { 1214 sbuf_delete(&sc->hpcmi_sbuf); 1215 sc->hpcmi_bufptr = -1; 1216 sc->hpcmi_open_pid = 0; 1217 ret = ENOMEM; 1218 } else { 1219 l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) - 1220 sc->hpcmi_bufptr); 1221 ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) + 1222 sc->hpcmi_bufptr, l, buf) : 0; 1223 sc->hpcmi_bufptr += l; 1224 } 1225 } 1226 ACPI_SERIAL_END(hp); 1227 1228 return (ret); 1229 } 1230