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_SERIAL_INIT(hp); 475 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 476 477 sc = device_get_softc(dev); 478 sc->dev = dev; 479 sc->has_notify = 0; 480 sc->has_cmi = 0; 481 sc->bluetooth_enable_if_radio_on = 0; 482 sc->bluetooth_disable_if_radio_off = 0; 483 sc->wlan_enable_if_radio_on = 0; 484 sc->wlan_disable_if_radio_off = 0; 485 sc->wlan_enable_if_radio_on = 0; 486 sc->wlan_disable_if_radio_off = 0; 487 sc->was_wlan_on_air = 0; 488 sc->was_bluetooth_on_air = 0; 489 sc->was_wwan_on_air = 0; 490 sc->cmi_detail = 0; 491 sc->cmi_order_size = -1; 492 sc->verbose = 0; 493 memset(sc->cmi_order, 0, sizeof(sc->cmi_order)); 494 sc->wmi_dev = device_get_parent(dev); 495 acpi_sc = acpi_device_get_parent_softc(sc->wmi_dev); 496 497 if (!ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 498 ACPI_HP_WMI_BIOS_GUID)) { 499 device_printf(dev, 500 "WMI device does not provide the HP BIOS GUID\n"); 501 return (EINVAL); 502 } 503 if (ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, 504 ACPI_HP_WMI_EVENT_GUID)) { 505 device_printf(dev, 506 "HP event GUID detected, installing event handler\n"); 507 if (ACPI_WMI_INSTALL_EVENT_HANDLER(sc->wmi_dev, 508 ACPI_HP_WMI_EVENT_GUID, acpi_hp_notify, dev)) { 509 device_printf(dev, 510 "Could not install notification handler!\n"); 511 } 512 else { 513 sc->has_notify = 1; 514 } 515 } 516 if ((sc->has_cmi = 517 ACPI_WMI_PROVIDES_GUID_STRING(sc->wmi_dev, ACPI_HP_WMI_CMI_GUID) 518 )) { 519 device_printf(dev, "HP CMI GUID detected\n"); 520 } 521 522 if (sc->has_cmi) { 523 sc->hpcmi_dev_t = make_dev(&hpcmi_ops, 0, UID_ROOT, 524 GID_WHEEL, 0644, "hpcmi"); 525 sc->hpcmi_dev_t->si_drv1 = sc; 526 sc->hpcmi_open_pid = 0; 527 sc->hpcmi_bufptr = -1; 528 } 529 530 ACPI_SERIAL_BEGIN(hp); 531 532 sysctl_ctx_init(&sc->sysctl_ctx); 533 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx, 534 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO, 535 "hp", CTLFLAG_RD, 0, ""); 536 537 for (int i = 0; acpi_hp_sysctls[i].name != NULL; ++i) { 538 arg = 0; 539 if ((!sc->has_notify && 540 (acpi_hp_sysctls[i].method == 541 ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON || 542 acpi_hp_sysctls[i].method == 543 ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF || 544 acpi_hp_sysctls[i].method == 545 ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON || 546 acpi_hp_sysctls[i].method == 547 ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF || 548 acpi_hp_sysctls[i].method == 549 ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON || 550 acpi_hp_sysctls[i].method == 551 ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF)) || 552 (arg = acpi_hp_sysctl_get(sc, 553 acpi_hp_sysctls[i].method)) < 0) { 554 continue; 555 } 556 if (acpi_hp_sysctls[i].method == ACPI_HP_METHOD_WLAN_ON_AIR) { 557 sc->was_wlan_on_air = arg; 558 } 559 else if (acpi_hp_sysctls[i].method == 560 ACPI_HP_METHOD_BLUETOOTH_ON_AIR) { 561 sc->was_bluetooth_on_air = arg; 562 } 563 else if (acpi_hp_sysctls[i].method == 564 ACPI_HP_METHOD_WWAN_ON_AIR) { 565 sc->was_wwan_on_air = arg; 566 } 567 568 SYSCTL_ADD_PROC(&sc->sysctl_ctx, 569 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, 570 acpi_hp_sysctls[i].name, acpi_hp_sysctls[i].access, 571 sc, i, acpi_hp_sysctl, "I", 572 acpi_hp_sysctls[i].description); 573 } 574 ACPI_SERIAL_END(hp); 575 576 return (0); 577 } 578 579 static int 580 acpi_hp_detach(device_t dev) 581 { 582 int ret; 583 584 ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__); 585 struct acpi_hp_softc *sc = device_get_softc(dev); 586 if (sc->has_cmi && sc->hpcmi_open_pid != 0) { 587 ret = EBUSY; 588 } 589 else { 590 if (sc->has_notify) { 591 ACPI_WMI_REMOVE_EVENT_HANDLER(dev, 592 ACPI_HP_WMI_EVENT_GUID); 593 } 594 if (sc->hpcmi_bufptr != -1) { 595 sbuf_delete(&sc->hpcmi_sbuf); 596 sc->hpcmi_bufptr = -1; 597 } 598 sc->hpcmi_open_pid = 0; 599 destroy_dev(sc->hpcmi_dev_t); 600 ret = 0; 601 } 602 603 return (ret); 604 } 605 606 static int 607 acpi_hp_sysctl(SYSCTL_HANDLER_ARGS) 608 { 609 struct acpi_hp_softc *sc; 610 int arg; 611 int oldarg; 612 int error = 0; 613 int function; 614 int method; 615 616 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 617 618 sc = (struct acpi_hp_softc *)oidp->oid_arg1; 619 function = oidp->oid_arg2; 620 method = acpi_hp_sysctls[function].method; 621 622 ACPI_SERIAL_BEGIN(hp); 623 arg = acpi_hp_sysctl_get(sc, method); 624 oldarg = arg; 625 error = sysctl_handle_int(oidp, &arg, 0, req); 626 if (!error && req->newptr != NULL) { 627 error = acpi_hp_sysctl_set(sc, method, arg, oldarg); 628 } 629 ACPI_SERIAL_END(hp); 630 631 return (error); 632 } 633 634 static int 635 acpi_hp_sysctl_get(struct acpi_hp_softc *sc, int method) 636 { 637 int val = 0; 638 639 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 640 ACPI_SERIAL_ASSERT(hp); 641 642 switch (method) { 643 case ACPI_HP_METHOD_WLAN_ENABLED: 644 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 645 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 646 val = ((val & HP_MASK_WLAN_ENABLED) != 0); 647 break; 648 case ACPI_HP_METHOD_WLAN_RADIO: 649 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 650 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 651 val = ((val & HP_MASK_WLAN_RADIO) != 0); 652 break; 653 case ACPI_HP_METHOD_WLAN_ON_AIR: 654 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 655 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 656 val = ((val & HP_MASK_WLAN_ON_AIR) != 0); 657 break; 658 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 659 val = sc->wlan_enable_if_radio_on; 660 break; 661 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 662 val = sc->wlan_disable_if_radio_off; 663 break; 664 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 665 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 666 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 667 val = ((val & HP_MASK_BLUETOOTH_ENABLED) != 0); 668 break; 669 case ACPI_HP_METHOD_BLUETOOTH_RADIO: 670 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 671 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 672 val = ((val & HP_MASK_BLUETOOTH_RADIO) != 0); 673 break; 674 case ACPI_HP_METHOD_BLUETOOTH_ON_AIR: 675 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 676 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 677 val = ((val & HP_MASK_BLUETOOTH_ON_AIR) != 0); 678 break; 679 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 680 val = sc->bluetooth_enable_if_radio_on; 681 break; 682 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 683 val = sc->bluetooth_disable_if_radio_off; 684 break; 685 case ACPI_HP_METHOD_WWAN_ENABLED: 686 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 687 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 688 val = ((val & HP_MASK_WWAN_ENABLED) != 0); 689 break; 690 case ACPI_HP_METHOD_WWAN_RADIO: 691 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 692 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 693 val = ((val & HP_MASK_WWAN_RADIO) != 0); 694 break; 695 case ACPI_HP_METHOD_WWAN_ON_AIR: 696 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 697 ACPI_HP_WMI_WIRELESS_COMMAND, 0, 0); 698 val = ((val & HP_MASK_WWAN_ON_AIR) != 0); 699 break; 700 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 701 val = sc->wwan_enable_if_radio_on; 702 break; 703 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 704 val = sc->wwan_disable_if_radio_off; 705 break; 706 case ACPI_HP_METHOD_ALS: 707 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 708 ACPI_HP_WMI_ALS_COMMAND, 0, 0); 709 break; 710 case ACPI_HP_METHOD_DISPLAY: 711 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 712 ACPI_HP_WMI_DISPLAY_COMMAND, 0, 0); 713 break; 714 case ACPI_HP_METHOD_HDDTEMP: 715 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 716 ACPI_HP_WMI_HDDTEMP_COMMAND, 0, 0); 717 break; 718 case ACPI_HP_METHOD_DOCK: 719 val = acpi_hp_exec_wmi_command(sc->wmi_dev, 720 ACPI_HP_WMI_DOCK_COMMAND, 0, 0); 721 break; 722 case ACPI_HP_METHOD_CMI_DETAIL: 723 val = sc->cmi_detail; 724 break; 725 case ACPI_HP_METHOD_VERBOSE: 726 val = sc->verbose; 727 break; 728 } 729 730 return (val); 731 } 732 733 static int 734 acpi_hp_sysctl_set(struct acpi_hp_softc *sc, int method, int arg, int oldarg) 735 { 736 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 737 ACPI_SERIAL_ASSERT(hp); 738 739 if (method != ACPI_HP_METHOD_CMI_DETAIL && 740 method != ACPI_HP_METHOD_VERBOSE) 741 arg = arg?1:0; 742 743 if (arg != oldarg) { 744 switch (method) { 745 case ACPI_HP_METHOD_WLAN_ENABLED: 746 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 747 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 748 arg?0x101:0x100)); 749 case ACPI_HP_METHOD_WLAN_ENABLE_IF_RADIO_ON: 750 sc->wlan_enable_if_radio_on = arg; 751 acpi_hp_evaluate_auto_on_off(sc); 752 break; 753 case ACPI_HP_METHOD_WLAN_DISABLE_IF_RADIO_OFF: 754 sc->wlan_disable_if_radio_off = arg; 755 acpi_hp_evaluate_auto_on_off(sc); 756 break; 757 case ACPI_HP_METHOD_BLUETOOTH_ENABLED: 758 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 759 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 760 arg?0x202:0x200)); 761 case ACPI_HP_METHOD_BLUETOOTH_ENABLE_IF_RADIO_ON: 762 sc->bluetooth_enable_if_radio_on = arg; 763 acpi_hp_evaluate_auto_on_off(sc); 764 break; 765 case ACPI_HP_METHOD_BLUETOOTH_DISABLE_IF_RADIO_OFF: 766 sc->bluetooth_disable_if_radio_off = arg?1:0; 767 acpi_hp_evaluate_auto_on_off(sc); 768 break; 769 case ACPI_HP_METHOD_WWAN_ENABLED: 770 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 771 ACPI_HP_WMI_WIRELESS_COMMAND, 1, 772 arg?0x404:0x400)); 773 case ACPI_HP_METHOD_WWAN_ENABLE_IF_RADIO_ON: 774 sc->wwan_enable_if_radio_on = arg?1:0; 775 acpi_hp_evaluate_auto_on_off(sc); 776 break; 777 case ACPI_HP_METHOD_WWAN_DISABLE_IF_RADIO_OFF: 778 sc->wwan_disable_if_radio_off = arg?1:0; 779 acpi_hp_evaluate_auto_on_off(sc); 780 break; 781 case ACPI_HP_METHOD_ALS: 782 return (acpi_hp_exec_wmi_command(sc->wmi_dev, 783 ACPI_HP_WMI_ALS_COMMAND, 1, 784 arg?1:0)); 785 case ACPI_HP_METHOD_CMI_DETAIL: 786 sc->cmi_detail = arg; 787 if ((arg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) != 788 (oldarg & ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE)) { 789 sc->cmi_order_size = -1; 790 } 791 break; 792 case ACPI_HP_METHOD_VERBOSE: 793 sc->verbose = arg; 794 break; 795 } 796 } 797 798 return (0); 799 } 800 801 static __inline void 802 acpi_hp_free_buffer(ACPI_BUFFER* buf) { 803 if (buf && buf->Pointer) { 804 AcpiOsFree(buf->Pointer); 805 } 806 } 807 808 static void 809 acpi_hp_notify(ACPI_HANDLE h, UINT32 notify, void *context) 810 { 811 device_t dev = context; 812 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify); 813 814 struct acpi_hp_softc *sc = device_get_softc(dev); 815 ACPI_BUFFER response = { ACPI_ALLOCATE_BUFFER, NULL }; 816 ACPI_OBJECT *obj; 817 ACPI_WMI_GET_EVENT_DATA(sc->wmi_dev, notify, &response); 818 obj = (ACPI_OBJECT*) response.Pointer; 819 if (obj && obj->Type == ACPI_TYPE_BUFFER && obj->Buffer.Length == 8) { 820 if (*((UINT8 *) obj->Buffer.Pointer) == 0x5) { 821 acpi_hp_evaluate_auto_on_off(sc); 822 } 823 } 824 acpi_hp_free_buffer(&response); 825 } 826 827 static int 828 acpi_hp_exec_wmi_command(device_t wmi_dev, int command, int is_write, int val) 829 { 830 UINT32 params[5] = { 0x55434553, 831 is_write?2:1, 832 command, 833 is_write?4:0, 834 val}; 835 UINT32* result; 836 ACPI_OBJECT *obj; 837 ACPI_BUFFER in = { sizeof(params), ¶ms }; 838 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 839 int retval; 840 841 if (ACPI_FAILURE(ACPI_WMI_EVALUATE_CALL(wmi_dev, ACPI_HP_WMI_BIOS_GUID, 842 0, 0x3, &in, &out))) { 843 acpi_hp_free_buffer(&out); 844 return (-EINVAL); 845 } 846 obj = out.Pointer; 847 if (!obj || obj->Type != ACPI_TYPE_BUFFER) { 848 acpi_hp_free_buffer(&out); 849 return (-EINVAL); 850 } 851 result = (UINT32*) obj->Buffer.Pointer; 852 retval = result[2]; 853 if (result[1] > 0) { 854 retval = result[1]; 855 } 856 acpi_hp_free_buffer(&out); 857 858 return (retval); 859 } 860 861 static __inline char* 862 acpi_hp_get_string_from_object(ACPI_OBJECT* obj, char* dst, size_t size) { 863 int length; 864 865 dst[0] = 0; 866 if (obj->Type == ACPI_TYPE_STRING) { 867 length = obj->String.Length+1; 868 if (length > size) { 869 length = size - 1; 870 } 871 strlcpy(dst, obj->String.Pointer, length); 872 acpi_hp_hex_decode(dst); 873 } 874 875 return (dst); 876 } 877 878 879 /* 880 * Read BIOS Setting block in instance "instance". 881 * The block returned is ACPI_TYPE_PACKAGE which should contain the following 882 * elements: 883 * Index Meaning 884 * 0 Setting Name [string] 885 * 1 Value (comma separated, asterisk marks the current value) [string] 886 * 2 Path within the bios hierarchy [string] 887 * 3 IsReadOnly [int] 888 * 4 DisplayInUI [int] 889 * 5 RequiresPhysicalPresence [int] 890 * 6 Sequence for ordering within the bios settings (absolute) [int] 891 * 7 Length of prerequisites array [int] 892 * 8..8+[7] PrerequisiteN [string] 893 * 9+[7] Current value (in case of enum) [string] / Array length [int] 894 * 10+[7] Enum length [int] / Array values 895 * 11+[7]ff Enum value at index x [string] 896 */ 897 static int 898 acpi_hp_get_cmi_block(device_t wmi_dev, const char* guid, UINT8 instance, 899 char* outbuf, size_t outsize, UINT32* sequence, int detail) 900 { 901 ACPI_OBJECT *obj; 902 ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL }; 903 int i; 904 int outlen; 905 int size = 255; 906 int has_enums = 0; 907 int valuebase = 0; 908 char string_buffer[size]; 909 int enumbase; 910 911 outlen = 0; 912 outbuf[0] = 0; 913 if (ACPI_FAILURE(ACPI_WMI_GET_BLOCK(wmi_dev, guid, instance, &out))) { 914 acpi_hp_free_buffer(&out); 915 return (-EINVAL); 916 } 917 obj = out.Pointer; 918 if (!obj || obj->Type != ACPI_TYPE_PACKAGE) { 919 acpi_hp_free_buffer(&out); 920 return (-EINVAL); 921 } 922 923 if (obj->Package.Count >= 8 && 924 obj->Package.Elements[7].Type == ACPI_TYPE_INTEGER) { 925 valuebase = 8 + obj->Package.Elements[7].Integer.Value; 926 } 927 928 /* check if this matches our expectations based on limited knowledge */ 929 if (valuebase > 7 && obj->Package.Count > valuebase + 1 && 930 obj->Package.Elements[0].Type == ACPI_TYPE_STRING && 931 obj->Package.Elements[1].Type == ACPI_TYPE_STRING && 932 obj->Package.Elements[2].Type == ACPI_TYPE_STRING && 933 obj->Package.Elements[3].Type == ACPI_TYPE_INTEGER && 934 obj->Package.Elements[4].Type == ACPI_TYPE_INTEGER && 935 obj->Package.Elements[5].Type == ACPI_TYPE_INTEGER && 936 obj->Package.Elements[6].Type == ACPI_TYPE_INTEGER && 937 obj->Package.Elements[valuebase].Type == ACPI_TYPE_STRING && 938 obj->Package.Elements[valuebase+1].Type == ACPI_TYPE_INTEGER && 939 obj->Package.Count > valuebase + 940 obj->Package.Elements[valuebase+1].Integer.Value 941 ) { 942 enumbase = valuebase + 1; 943 if (detail & ACPI_HP_CMI_DETAIL_PATHS) { 944 strlcat(outbuf, acpi_hp_get_string_from_object( 945 &obj->Package.Elements[2], string_buffer, size), 946 outsize); 947 outlen += 48; 948 while (strlen(outbuf) < outlen) 949 strlcat(outbuf, " ", outsize); 950 } 951 strlcat(outbuf, acpi_hp_get_string_from_object( 952 &obj->Package.Elements[0], string_buffer, size), 953 outsize); 954 outlen += 43; 955 while (strlen(outbuf) < outlen) 956 strlcat(outbuf, " ", outsize); 957 strlcat(outbuf, acpi_hp_get_string_from_object( 958 &obj->Package.Elements[valuebase], string_buffer, 959 size), 960 outsize); 961 outlen += 21; 962 while (strlen(outbuf) < outlen) 963 strlcat(outbuf, " ", outsize); 964 for (i = 0; i < strlen(outbuf); ++i) 965 if (outbuf[i] == '\\') 966 outbuf[i] = '/'; 967 if (detail & ACPI_HP_CMI_DETAIL_ENUMS) { 968 for (i = enumbase + 1; i < enumbase + 1 + 969 obj->Package.Elements[enumbase].Integer.Value; 970 ++i) { 971 acpi_hp_get_string_from_object( 972 &obj->Package.Elements[i], string_buffer, 973 size); 974 if (strlen(string_buffer) > 1 || 975 (strlen(string_buffer) == 1 && 976 string_buffer[0] != ' ')) { 977 if (has_enums) 978 strlcat(outbuf, "/", outsize); 979 else 980 strlcat(outbuf, " (", outsize); 981 strlcat(outbuf, string_buffer, outsize); 982 has_enums = 1; 983 } 984 } 985 } 986 if (has_enums) 987 strlcat(outbuf, ")", outsize); 988 if (detail & ACPI_HP_CMI_DETAIL_FLAGS) { 989 strlcat(outbuf, obj->Package.Elements[3].Integer.Value? 990 " [ReadOnly]":"", outsize); 991 strlcat(outbuf, obj->Package.Elements[4].Integer.Value? 992 "":" [NOUI]", outsize); 993 strlcat(outbuf, obj->Package.Elements[5].Integer.Value? 994 " [RPP]":"", outsize); 995 } 996 *sequence = (UINT32) obj->Package.Elements[6].Integer.Value; 997 } 998 acpi_hp_free_buffer(&out); 999 1000 return (0); 1001 } 1002 1003 1004 1005 /* 1006 * Convert given two digit hex string (hexin) to an UINT8 referenced 1007 * by byteout. 1008 * Return != 0 if the was a problem (invalid input) 1009 */ 1010 static __inline int acpi_hp_hex_to_int(const UINT8 *hexin, UINT8 *byteout) 1011 { 1012 unsigned int hi; 1013 unsigned int lo; 1014 1015 hi = hexin[0]; 1016 lo = hexin[1]; 1017 if ('0' <= hi && hi <= '9') 1018 hi -= '0'; 1019 else if ('A' <= hi && hi <= 'F') 1020 hi -= ('A' - 10); 1021 else if ('a' <= hi && hi <= 'f') 1022 hi -= ('a' - 10); 1023 else 1024 return (1); 1025 if ('0' <= lo && lo <= '9') 1026 lo -= '0'; 1027 else if ('A' <= lo && lo <= 'F') 1028 lo -= ('A' - 10); 1029 else if ('a' <= lo && lo <= 'f') 1030 lo -= ('a' - 10); 1031 else 1032 return (1); 1033 *byteout = (hi << 4) + lo; 1034 1035 return (0); 1036 } 1037 1038 1039 static void 1040 acpi_hp_hex_decode(char* buffer) 1041 { 1042 int i; 1043 int length = strlen(buffer); 1044 UINT8 *uin; 1045 UINT8 uout; 1046 1047 if (((int)length/2)*2 == length || length < 10) return; 1048 1049 for (i = 0; i<length; ++i) { 1050 if (!((i+1)%3)) { 1051 if (buffer[i] != ' ') 1052 return; 1053 } 1054 else 1055 if (!((buffer[i] >= '0' && buffer[i] <= '9') || 1056 (buffer[i] >= 'A' && buffer[i] <= 'F'))) 1057 return; 1058 } 1059 1060 for (i = 0; i<length; i += 3) { 1061 uin = &buffer[i]; 1062 uout = 0; 1063 acpi_hp_hex_to_int(uin, &uout); 1064 buffer[i/3] = (char) uout; 1065 } 1066 buffer[(length+1)/3] = 0; 1067 } 1068 1069 1070 /* 1071 * open hpcmi device 1072 */ 1073 static int 1074 acpi_hp_hpcmi_open(struct dev_open_args *ap) 1075 { 1076 struct acpi_hp_softc *sc; 1077 int ret; 1078 struct cdev *dev = ap->a_head.a_dev; 1079 struct thread *td = curthread; 1080 1081 if (dev == NULL || dev->si_drv1 == NULL) 1082 return (EBADF); 1083 sc = dev->si_drv1; 1084 1085 ACPI_SERIAL_BEGIN(hp); 1086 if (sc->hpcmi_open_pid != 0) { 1087 ret = EBUSY; 1088 } 1089 else { 1090 if (sbuf_new(&sc->hpcmi_sbuf, NULL, 4096, SBUF_AUTOEXTEND) 1091 == NULL) { 1092 ret = ENXIO; 1093 } else { 1094 sc->hpcmi_open_pid = td->td_proc->p_pid; 1095 sc->hpcmi_bufptr = 0; 1096 ret = 0; 1097 } 1098 } 1099 ACPI_SERIAL_END(hp); 1100 1101 return (ret); 1102 } 1103 1104 /* 1105 * close hpcmi device 1106 */ 1107 static int 1108 acpi_hp_hpcmi_close(struct dev_close_args *ap) 1109 { 1110 struct acpi_hp_softc *sc; 1111 int ret; 1112 struct cdev *dev = ap->a_head.a_dev; 1113 1114 if (dev == NULL || dev->si_drv1 == NULL) 1115 return (EBADF); 1116 sc = dev->si_drv1; 1117 1118 ACPI_SERIAL_BEGIN(hp); 1119 if (sc->hpcmi_open_pid == 0) { 1120 ret = EBADF; 1121 } 1122 else { 1123 if (sc->hpcmi_bufptr != -1) { 1124 sbuf_delete(&sc->hpcmi_sbuf); 1125 sc->hpcmi_bufptr = -1; 1126 } 1127 sc->hpcmi_open_pid = 0; 1128 ret = 0; 1129 } 1130 ACPI_SERIAL_END(hp); 1131 1132 return (ret); 1133 } 1134 1135 /* 1136 * Read from hpcmi bios information 1137 */ 1138 static int 1139 acpi_hp_hpcmi_read(struct dev_read_args *ap) 1140 { 1141 struct acpi_hp_softc *sc; 1142 int pos, i, l, ret; 1143 UINT8 instance; 1144 UINT8 maxInstance; 1145 UINT32 sequence; 1146 int linesize = 1025; 1147 char line[linesize]; 1148 struct cdev *dev = ap->a_head.a_dev; 1149 struct uio *buf = ap->a_uio; 1150 1151 if (dev == NULL || dev->si_drv1 == NULL) 1152 return (EBADF); 1153 sc = dev->si_drv1; 1154 1155 ACPI_SERIAL_BEGIN(hp); 1156 if (sc->hpcmi_open_pid != buf->uio_td->td_proc->p_pid 1157 || sc->hpcmi_bufptr == -1) { 1158 ret = EBADF; 1159 } 1160 else { 1161 if (!sbuf_done(&sc->hpcmi_sbuf)) { 1162 if (sc->cmi_order_size < 0) { 1163 maxInstance = sc->has_cmi; 1164 if (!(sc->cmi_detail & 1165 ACPI_HP_CMI_DETAIL_SHOW_MAX_INSTANCE) && 1166 maxInstance > 0) { 1167 maxInstance--; 1168 } 1169 sc->cmi_order_size = 0; 1170 for (instance = 0; instance < maxInstance; 1171 ++instance) { 1172 if (acpi_hp_get_cmi_block(sc->wmi_dev, 1173 ACPI_HP_WMI_CMI_GUID, instance, 1174 line, linesize, &sequence, 1175 sc->cmi_detail)) { 1176 instance = maxInstance; 1177 } 1178 else { 1179 pos = sc->cmi_order_size; 1180 for (i=0; 1181 i<sc->cmi_order_size && i<127; 1182 ++i) { 1183 if (sc->cmi_order[i].sequence > sequence) { 1184 pos = i; 1185 break; 1186 } 1187 } 1188 for (i=sc->cmi_order_size; 1189 i>pos; 1190 --i) { 1191 sc->cmi_order[i].sequence = 1192 sc->cmi_order[i-1].sequence; 1193 sc->cmi_order[i].instance = 1194 sc->cmi_order[i-1].instance; 1195 } 1196 sc->cmi_order[pos].sequence = 1197 sequence; 1198 sc->cmi_order[pos].instance = 1199 instance; 1200 sc->cmi_order_size++; 1201 } 1202 } 1203 } 1204 for (i=0; i<sc->cmi_order_size; ++i) { 1205 if (!acpi_hp_get_cmi_block(sc->wmi_dev, 1206 ACPI_HP_WMI_CMI_GUID, 1207 sc->cmi_order[i].instance, line, linesize, 1208 &sequence, sc->cmi_detail)) { 1209 sbuf_printf(&sc->hpcmi_sbuf, "%s\n", line); 1210 } 1211 } 1212 sbuf_finish(&sc->hpcmi_sbuf); 1213 } 1214 if (sbuf_len(&sc->hpcmi_sbuf) <= 0) { 1215 sbuf_delete(&sc->hpcmi_sbuf); 1216 sc->hpcmi_bufptr = -1; 1217 sc->hpcmi_open_pid = 0; 1218 ret = ENOMEM; 1219 } else { 1220 l = min(buf->uio_resid, sbuf_len(&sc->hpcmi_sbuf) - 1221 sc->hpcmi_bufptr); 1222 ret = (l > 0)?uiomove(sbuf_data(&sc->hpcmi_sbuf) + 1223 sc->hpcmi_bufptr, l, buf) : 0; 1224 sc->hpcmi_bufptr += l; 1225 } 1226 } 1227 ACPI_SERIAL_END(hp); 1228 1229 return (ret); 1230 } 1231