1 /* 2 * lpc_ich.c - LPC interface for Intel ICH 3 * 4 * LPC bridge function of the Intel ICH contains many other 5 * functional units, such as Interrupt controllers, Timers, 6 * Power Management, System Management, GPIO, RTC, and LPC 7 * Configuration Registers. 8 * 9 * This driver is derived from lpc_sch. 10 11 * Copyright (c) 2011 Extreme Engineering Solution, Inc. 12 * Author: Aaron Sierra <asierra@xes-inc.com> 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License 2 as published 16 * by the Free Software Foundation. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 * 23 * You should have received a copy of the GNU General Public License 24 * along with this program; see the file COPYING. If not, write to 25 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 26 * 27 * This driver supports the following I/O Controller hubs: 28 * (See the intel documentation on http://developer.intel.com.) 29 * document number 290655-003, 290677-014: 82801AA (ICH), 82801AB (ICHO) 30 * document number 290687-002, 298242-027: 82801BA (ICH2) 31 * document number 290733-003, 290739-013: 82801CA (ICH3-S) 32 * document number 290716-001, 290718-007: 82801CAM (ICH3-M) 33 * document number 290744-001, 290745-025: 82801DB (ICH4) 34 * document number 252337-001, 252663-008: 82801DBM (ICH4-M) 35 * document number 273599-001, 273645-002: 82801E (C-ICH) 36 * document number 252516-001, 252517-028: 82801EB (ICH5), 82801ER (ICH5R) 37 * document number 300641-004, 300884-013: 6300ESB 38 * document number 301473-002, 301474-026: 82801F (ICH6) 39 * document number 313082-001, 313075-006: 631xESB, 632xESB 40 * document number 307013-003, 307014-024: 82801G (ICH7) 41 * document number 322896-001, 322897-001: NM10 42 * document number 313056-003, 313057-017: 82801H (ICH8) 43 * document number 316972-004, 316973-012: 82801I (ICH9) 44 * document number 319973-002, 319974-002: 82801J (ICH10) 45 * document number 322169-001, 322170-003: 5 Series, 3400 Series (PCH) 46 * document number 320066-003, 320257-008: EP80597 (IICH) 47 * document number 324645-001, 324646-001: Cougar Point (CPT) 48 * document number TBD : Patsburg (PBG) 49 * document number TBD : DH89xxCC 50 * document number TBD : Panther Point 51 * document number TBD : Lynx Point 52 * document number TBD : Lynx Point-LP 53 * document number TBD : Wellsburg 54 * document number TBD : Avoton SoC 55 * document number TBD : Coleto Creek 56 * document number TBD : Wildcat Point-LP 57 */ 58 59 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 60 61 #include <linux/init.h> 62 #include <linux/kernel.h> 63 #include <linux/module.h> 64 #include <linux/errno.h> 65 #include <linux/acpi.h> 66 #include <linux/pci.h> 67 #include <linux/mfd/core.h> 68 #include <linux/mfd/lpc_ich.h> 69 70 #define ACPIBASE 0x40 71 #define ACPIBASE_GPE_OFF 0x28 72 #define ACPIBASE_GPE_END 0x2f 73 #define ACPIBASE_SMI_OFF 0x30 74 #define ACPIBASE_SMI_END 0x33 75 #define ACPIBASE_TCO_OFF 0x60 76 #define ACPIBASE_TCO_END 0x7f 77 #define ACPICTRL 0x44 78 79 #define ACPIBASE_GCS_OFF 0x3410 80 #define ACPIBASE_GCS_END 0x3414 81 82 #define GPIOBASE_ICH0 0x58 83 #define GPIOCTRL_ICH0 0x5C 84 #define GPIOBASE_ICH6 0x48 85 #define GPIOCTRL_ICH6 0x4C 86 87 #define RCBABASE 0xf0 88 89 #define wdt_io_res(i) wdt_res(0, i) 90 #define wdt_mem_res(i) wdt_res(ICH_RES_MEM_OFF, i) 91 #define wdt_res(b, i) (&wdt_ich_res[(b) + (i)]) 92 93 struct lpc_ich_cfg { 94 int base; 95 int ctrl; 96 int save; 97 }; 98 99 struct lpc_ich_priv { 100 int chipset; 101 struct lpc_ich_cfg acpi; 102 struct lpc_ich_cfg gpio; 103 }; 104 105 static struct resource wdt_ich_res[] = { 106 /* ACPI - TCO */ 107 { 108 .flags = IORESOURCE_IO, 109 }, 110 /* ACPI - SMI */ 111 { 112 .flags = IORESOURCE_IO, 113 }, 114 /* GCS */ 115 { 116 .flags = IORESOURCE_MEM, 117 }, 118 }; 119 120 static struct resource gpio_ich_res[] = { 121 /* GPIO */ 122 { 123 .flags = IORESOURCE_IO, 124 }, 125 /* ACPI - GPE0 */ 126 { 127 .flags = IORESOURCE_IO, 128 }, 129 }; 130 131 enum lpc_cells { 132 LPC_WDT = 0, 133 LPC_GPIO, 134 }; 135 136 static struct mfd_cell lpc_ich_cells[] = { 137 [LPC_WDT] = { 138 .name = "iTCO_wdt", 139 .num_resources = ARRAY_SIZE(wdt_ich_res), 140 .resources = wdt_ich_res, 141 .ignore_resource_conflicts = true, 142 }, 143 [LPC_GPIO] = { 144 .name = "gpio_ich", 145 .num_resources = ARRAY_SIZE(gpio_ich_res), 146 .resources = gpio_ich_res, 147 .ignore_resource_conflicts = true, 148 }, 149 }; 150 151 /* chipset related info */ 152 enum lpc_chipsets { 153 LPC_ICH = 0, /* ICH */ 154 LPC_ICH0, /* ICH0 */ 155 LPC_ICH2, /* ICH2 */ 156 LPC_ICH2M, /* ICH2-M */ 157 LPC_ICH3, /* ICH3-S */ 158 LPC_ICH3M, /* ICH3-M */ 159 LPC_ICH4, /* ICH4 */ 160 LPC_ICH4M, /* ICH4-M */ 161 LPC_CICH, /* C-ICH */ 162 LPC_ICH5, /* ICH5 & ICH5R */ 163 LPC_6300ESB, /* 6300ESB */ 164 LPC_ICH6, /* ICH6 & ICH6R */ 165 LPC_ICH6M, /* ICH6-M */ 166 LPC_ICH6W, /* ICH6W & ICH6RW */ 167 LPC_631XESB, /* 631xESB/632xESB */ 168 LPC_ICH7, /* ICH7 & ICH7R */ 169 LPC_ICH7DH, /* ICH7DH */ 170 LPC_ICH7M, /* ICH7-M & ICH7-U */ 171 LPC_ICH7MDH, /* ICH7-M DH */ 172 LPC_NM10, /* NM10 */ 173 LPC_ICH8, /* ICH8 & ICH8R */ 174 LPC_ICH8DH, /* ICH8DH */ 175 LPC_ICH8DO, /* ICH8DO */ 176 LPC_ICH8M, /* ICH8M */ 177 LPC_ICH8ME, /* ICH8M-E */ 178 LPC_ICH9, /* ICH9 */ 179 LPC_ICH9R, /* ICH9R */ 180 LPC_ICH9DH, /* ICH9DH */ 181 LPC_ICH9DO, /* ICH9DO */ 182 LPC_ICH9M, /* ICH9M */ 183 LPC_ICH9ME, /* ICH9M-E */ 184 LPC_ICH10, /* ICH10 */ 185 LPC_ICH10R, /* ICH10R */ 186 LPC_ICH10D, /* ICH10D */ 187 LPC_ICH10DO, /* ICH10DO */ 188 LPC_PCH, /* PCH Desktop Full Featured */ 189 LPC_PCHM, /* PCH Mobile Full Featured */ 190 LPC_P55, /* P55 */ 191 LPC_PM55, /* PM55 */ 192 LPC_H55, /* H55 */ 193 LPC_QM57, /* QM57 */ 194 LPC_H57, /* H57 */ 195 LPC_HM55, /* HM55 */ 196 LPC_Q57, /* Q57 */ 197 LPC_HM57, /* HM57 */ 198 LPC_PCHMSFF, /* PCH Mobile SFF Full Featured */ 199 LPC_QS57, /* QS57 */ 200 LPC_3400, /* 3400 */ 201 LPC_3420, /* 3420 */ 202 LPC_3450, /* 3450 */ 203 LPC_EP80579, /* EP80579 */ 204 LPC_CPT, /* Cougar Point */ 205 LPC_CPTD, /* Cougar Point Desktop */ 206 LPC_CPTM, /* Cougar Point Mobile */ 207 LPC_PBG, /* Patsburg */ 208 LPC_DH89XXCC, /* DH89xxCC */ 209 LPC_PPT, /* Panther Point */ 210 LPC_LPT, /* Lynx Point */ 211 LPC_LPT_LP, /* Lynx Point-LP */ 212 LPC_WBG, /* Wellsburg */ 213 LPC_AVN, /* Avoton SoC */ 214 LPC_COLETO, /* Coleto Creek */ 215 LPC_WPT_LP, /* Wildcat Point-LP */ 216 }; 217 218 static struct lpc_ich_info lpc_chipset_info[] = { 219 [LPC_ICH] = { 220 .name = "ICH", 221 .iTCO_version = 1, 222 }, 223 [LPC_ICH0] = { 224 .name = "ICH0", 225 .iTCO_version = 1, 226 }, 227 [LPC_ICH2] = { 228 .name = "ICH2", 229 .iTCO_version = 1, 230 }, 231 [LPC_ICH2M] = { 232 .name = "ICH2-M", 233 .iTCO_version = 1, 234 }, 235 [LPC_ICH3] = { 236 .name = "ICH3-S", 237 .iTCO_version = 1, 238 }, 239 [LPC_ICH3M] = { 240 .name = "ICH3-M", 241 .iTCO_version = 1, 242 }, 243 [LPC_ICH4] = { 244 .name = "ICH4", 245 .iTCO_version = 1, 246 }, 247 [LPC_ICH4M] = { 248 .name = "ICH4-M", 249 .iTCO_version = 1, 250 }, 251 [LPC_CICH] = { 252 .name = "C-ICH", 253 .iTCO_version = 1, 254 }, 255 [LPC_ICH5] = { 256 .name = "ICH5 or ICH5R", 257 .iTCO_version = 1, 258 }, 259 [LPC_6300ESB] = { 260 .name = "6300ESB", 261 .iTCO_version = 1, 262 }, 263 [LPC_ICH6] = { 264 .name = "ICH6 or ICH6R", 265 .iTCO_version = 2, 266 .gpio_version = ICH_V6_GPIO, 267 }, 268 [LPC_ICH6M] = { 269 .name = "ICH6-M", 270 .iTCO_version = 2, 271 .gpio_version = ICH_V6_GPIO, 272 }, 273 [LPC_ICH6W] = { 274 .name = "ICH6W or ICH6RW", 275 .iTCO_version = 2, 276 .gpio_version = ICH_V6_GPIO, 277 }, 278 [LPC_631XESB] = { 279 .name = "631xESB/632xESB", 280 .iTCO_version = 2, 281 .gpio_version = ICH_V6_GPIO, 282 }, 283 [LPC_ICH7] = { 284 .name = "ICH7 or ICH7R", 285 .iTCO_version = 2, 286 .gpio_version = ICH_V7_GPIO, 287 }, 288 [LPC_ICH7DH] = { 289 .name = "ICH7DH", 290 .iTCO_version = 2, 291 .gpio_version = ICH_V7_GPIO, 292 }, 293 [LPC_ICH7M] = { 294 .name = "ICH7-M or ICH7-U", 295 .iTCO_version = 2, 296 .gpio_version = ICH_V7_GPIO, 297 }, 298 [LPC_ICH7MDH] = { 299 .name = "ICH7-M DH", 300 .iTCO_version = 2, 301 .gpio_version = ICH_V7_GPIO, 302 }, 303 [LPC_NM10] = { 304 .name = "NM10", 305 .iTCO_version = 2, 306 }, 307 [LPC_ICH8] = { 308 .name = "ICH8 or ICH8R", 309 .iTCO_version = 2, 310 .gpio_version = ICH_V7_GPIO, 311 }, 312 [LPC_ICH8DH] = { 313 .name = "ICH8DH", 314 .iTCO_version = 2, 315 .gpio_version = ICH_V7_GPIO, 316 }, 317 [LPC_ICH8DO] = { 318 .name = "ICH8DO", 319 .iTCO_version = 2, 320 .gpio_version = ICH_V7_GPIO, 321 }, 322 [LPC_ICH8M] = { 323 .name = "ICH8M", 324 .iTCO_version = 2, 325 .gpio_version = ICH_V7_GPIO, 326 }, 327 [LPC_ICH8ME] = { 328 .name = "ICH8M-E", 329 .iTCO_version = 2, 330 .gpio_version = ICH_V7_GPIO, 331 }, 332 [LPC_ICH9] = { 333 .name = "ICH9", 334 .iTCO_version = 2, 335 .gpio_version = ICH_V9_GPIO, 336 }, 337 [LPC_ICH9R] = { 338 .name = "ICH9R", 339 .iTCO_version = 2, 340 .gpio_version = ICH_V9_GPIO, 341 }, 342 [LPC_ICH9DH] = { 343 .name = "ICH9DH", 344 .iTCO_version = 2, 345 .gpio_version = ICH_V9_GPIO, 346 }, 347 [LPC_ICH9DO] = { 348 .name = "ICH9DO", 349 .iTCO_version = 2, 350 .gpio_version = ICH_V9_GPIO, 351 }, 352 [LPC_ICH9M] = { 353 .name = "ICH9M", 354 .iTCO_version = 2, 355 .gpio_version = ICH_V9_GPIO, 356 }, 357 [LPC_ICH9ME] = { 358 .name = "ICH9M-E", 359 .iTCO_version = 2, 360 .gpio_version = ICH_V9_GPIO, 361 }, 362 [LPC_ICH10] = { 363 .name = "ICH10", 364 .iTCO_version = 2, 365 .gpio_version = ICH_V10CONS_GPIO, 366 }, 367 [LPC_ICH10R] = { 368 .name = "ICH10R", 369 .iTCO_version = 2, 370 .gpio_version = ICH_V10CONS_GPIO, 371 }, 372 [LPC_ICH10D] = { 373 .name = "ICH10D", 374 .iTCO_version = 2, 375 .gpio_version = ICH_V10CORP_GPIO, 376 }, 377 [LPC_ICH10DO] = { 378 .name = "ICH10DO", 379 .iTCO_version = 2, 380 .gpio_version = ICH_V10CORP_GPIO, 381 }, 382 [LPC_PCH] = { 383 .name = "PCH Desktop Full Featured", 384 .iTCO_version = 2, 385 .gpio_version = ICH_V5_GPIO, 386 }, 387 [LPC_PCHM] = { 388 .name = "PCH Mobile Full Featured", 389 .iTCO_version = 2, 390 .gpio_version = ICH_V5_GPIO, 391 }, 392 [LPC_P55] = { 393 .name = "P55", 394 .iTCO_version = 2, 395 .gpio_version = ICH_V5_GPIO, 396 }, 397 [LPC_PM55] = { 398 .name = "PM55", 399 .iTCO_version = 2, 400 .gpio_version = ICH_V5_GPIO, 401 }, 402 [LPC_H55] = { 403 .name = "H55", 404 .iTCO_version = 2, 405 .gpio_version = ICH_V5_GPIO, 406 }, 407 [LPC_QM57] = { 408 .name = "QM57", 409 .iTCO_version = 2, 410 .gpio_version = ICH_V5_GPIO, 411 }, 412 [LPC_H57] = { 413 .name = "H57", 414 .iTCO_version = 2, 415 .gpio_version = ICH_V5_GPIO, 416 }, 417 [LPC_HM55] = { 418 .name = "HM55", 419 .iTCO_version = 2, 420 .gpio_version = ICH_V5_GPIO, 421 }, 422 [LPC_Q57] = { 423 .name = "Q57", 424 .iTCO_version = 2, 425 .gpio_version = ICH_V5_GPIO, 426 }, 427 [LPC_HM57] = { 428 .name = "HM57", 429 .iTCO_version = 2, 430 .gpio_version = ICH_V5_GPIO, 431 }, 432 [LPC_PCHMSFF] = { 433 .name = "PCH Mobile SFF Full Featured", 434 .iTCO_version = 2, 435 .gpio_version = ICH_V5_GPIO, 436 }, 437 [LPC_QS57] = { 438 .name = "QS57", 439 .iTCO_version = 2, 440 .gpio_version = ICH_V5_GPIO, 441 }, 442 [LPC_3400] = { 443 .name = "3400", 444 .iTCO_version = 2, 445 .gpio_version = ICH_V5_GPIO, 446 }, 447 [LPC_3420] = { 448 .name = "3420", 449 .iTCO_version = 2, 450 .gpio_version = ICH_V5_GPIO, 451 }, 452 [LPC_3450] = { 453 .name = "3450", 454 .iTCO_version = 2, 455 .gpio_version = ICH_V5_GPIO, 456 }, 457 [LPC_EP80579] = { 458 .name = "EP80579", 459 .iTCO_version = 2, 460 }, 461 [LPC_CPT] = { 462 .name = "Cougar Point", 463 .iTCO_version = 2, 464 .gpio_version = ICH_V5_GPIO, 465 }, 466 [LPC_CPTD] = { 467 .name = "Cougar Point Desktop", 468 .iTCO_version = 2, 469 .gpio_version = ICH_V5_GPIO, 470 }, 471 [LPC_CPTM] = { 472 .name = "Cougar Point Mobile", 473 .iTCO_version = 2, 474 .gpio_version = ICH_V5_GPIO, 475 }, 476 [LPC_PBG] = { 477 .name = "Patsburg", 478 .iTCO_version = 2, 479 }, 480 [LPC_DH89XXCC] = { 481 .name = "DH89xxCC", 482 .iTCO_version = 2, 483 }, 484 [LPC_PPT] = { 485 .name = "Panther Point", 486 .iTCO_version = 2, 487 }, 488 [LPC_LPT] = { 489 .name = "Lynx Point", 490 .iTCO_version = 2, 491 }, 492 [LPC_LPT_LP] = { 493 .name = "Lynx Point_LP", 494 .iTCO_version = 2, 495 }, 496 [LPC_WBG] = { 497 .name = "Wellsburg", 498 .iTCO_version = 2, 499 }, 500 [LPC_AVN] = { 501 .name = "Avoton SoC", 502 .iTCO_version = 1, 503 }, 504 [LPC_COLETO] = { 505 .name = "Coleto Creek", 506 .iTCO_version = 2, 507 }, 508 [LPC_WPT_LP] = { 509 .name = "Lynx Point_LP", 510 .iTCO_version = 2, 511 }, 512 }; 513 514 /* 515 * This data only exists for exporting the supported PCI ids 516 * via MODULE_DEVICE_TABLE. We do not actually register a 517 * pci_driver, because the I/O Controller Hub has also other 518 * functions that probably will be registered by other drivers. 519 */ 520 static DEFINE_PCI_DEVICE_TABLE(lpc_ich_ids) = { 521 { PCI_VDEVICE(INTEL, 0x2410), LPC_ICH}, 522 { PCI_VDEVICE(INTEL, 0x2420), LPC_ICH0}, 523 { PCI_VDEVICE(INTEL, 0x2440), LPC_ICH2}, 524 { PCI_VDEVICE(INTEL, 0x244c), LPC_ICH2M}, 525 { PCI_VDEVICE(INTEL, 0x2480), LPC_ICH3}, 526 { PCI_VDEVICE(INTEL, 0x248c), LPC_ICH3M}, 527 { PCI_VDEVICE(INTEL, 0x24c0), LPC_ICH4}, 528 { PCI_VDEVICE(INTEL, 0x24cc), LPC_ICH4M}, 529 { PCI_VDEVICE(INTEL, 0x2450), LPC_CICH}, 530 { PCI_VDEVICE(INTEL, 0x24d0), LPC_ICH5}, 531 { PCI_VDEVICE(INTEL, 0x25a1), LPC_6300ESB}, 532 { PCI_VDEVICE(INTEL, 0x2640), LPC_ICH6}, 533 { PCI_VDEVICE(INTEL, 0x2641), LPC_ICH6M}, 534 { PCI_VDEVICE(INTEL, 0x2642), LPC_ICH6W}, 535 { PCI_VDEVICE(INTEL, 0x2670), LPC_631XESB}, 536 { PCI_VDEVICE(INTEL, 0x2671), LPC_631XESB}, 537 { PCI_VDEVICE(INTEL, 0x2672), LPC_631XESB}, 538 { PCI_VDEVICE(INTEL, 0x2673), LPC_631XESB}, 539 { PCI_VDEVICE(INTEL, 0x2674), LPC_631XESB}, 540 { PCI_VDEVICE(INTEL, 0x2675), LPC_631XESB}, 541 { PCI_VDEVICE(INTEL, 0x2676), LPC_631XESB}, 542 { PCI_VDEVICE(INTEL, 0x2677), LPC_631XESB}, 543 { PCI_VDEVICE(INTEL, 0x2678), LPC_631XESB}, 544 { PCI_VDEVICE(INTEL, 0x2679), LPC_631XESB}, 545 { PCI_VDEVICE(INTEL, 0x267a), LPC_631XESB}, 546 { PCI_VDEVICE(INTEL, 0x267b), LPC_631XESB}, 547 { PCI_VDEVICE(INTEL, 0x267c), LPC_631XESB}, 548 { PCI_VDEVICE(INTEL, 0x267d), LPC_631XESB}, 549 { PCI_VDEVICE(INTEL, 0x267e), LPC_631XESB}, 550 { PCI_VDEVICE(INTEL, 0x267f), LPC_631XESB}, 551 { PCI_VDEVICE(INTEL, 0x27b8), LPC_ICH7}, 552 { PCI_VDEVICE(INTEL, 0x27b0), LPC_ICH7DH}, 553 { PCI_VDEVICE(INTEL, 0x27b9), LPC_ICH7M}, 554 { PCI_VDEVICE(INTEL, 0x27bd), LPC_ICH7MDH}, 555 { PCI_VDEVICE(INTEL, 0x27bc), LPC_NM10}, 556 { PCI_VDEVICE(INTEL, 0x2810), LPC_ICH8}, 557 { PCI_VDEVICE(INTEL, 0x2812), LPC_ICH8DH}, 558 { PCI_VDEVICE(INTEL, 0x2814), LPC_ICH8DO}, 559 { PCI_VDEVICE(INTEL, 0x2815), LPC_ICH8M}, 560 { PCI_VDEVICE(INTEL, 0x2811), LPC_ICH8ME}, 561 { PCI_VDEVICE(INTEL, 0x2918), LPC_ICH9}, 562 { PCI_VDEVICE(INTEL, 0x2916), LPC_ICH9R}, 563 { PCI_VDEVICE(INTEL, 0x2912), LPC_ICH9DH}, 564 { PCI_VDEVICE(INTEL, 0x2914), LPC_ICH9DO}, 565 { PCI_VDEVICE(INTEL, 0x2919), LPC_ICH9M}, 566 { PCI_VDEVICE(INTEL, 0x2917), LPC_ICH9ME}, 567 { PCI_VDEVICE(INTEL, 0x3a18), LPC_ICH10}, 568 { PCI_VDEVICE(INTEL, 0x3a16), LPC_ICH10R}, 569 { PCI_VDEVICE(INTEL, 0x3a1a), LPC_ICH10D}, 570 { PCI_VDEVICE(INTEL, 0x3a14), LPC_ICH10DO}, 571 { PCI_VDEVICE(INTEL, 0x3b00), LPC_PCH}, 572 { PCI_VDEVICE(INTEL, 0x3b01), LPC_PCHM}, 573 { PCI_VDEVICE(INTEL, 0x3b02), LPC_P55}, 574 { PCI_VDEVICE(INTEL, 0x3b03), LPC_PM55}, 575 { PCI_VDEVICE(INTEL, 0x3b06), LPC_H55}, 576 { PCI_VDEVICE(INTEL, 0x3b07), LPC_QM57}, 577 { PCI_VDEVICE(INTEL, 0x3b08), LPC_H57}, 578 { PCI_VDEVICE(INTEL, 0x3b09), LPC_HM55}, 579 { PCI_VDEVICE(INTEL, 0x3b0a), LPC_Q57}, 580 { PCI_VDEVICE(INTEL, 0x3b0b), LPC_HM57}, 581 { PCI_VDEVICE(INTEL, 0x3b0d), LPC_PCHMSFF}, 582 { PCI_VDEVICE(INTEL, 0x3b0f), LPC_QS57}, 583 { PCI_VDEVICE(INTEL, 0x3b12), LPC_3400}, 584 { PCI_VDEVICE(INTEL, 0x3b14), LPC_3420}, 585 { PCI_VDEVICE(INTEL, 0x3b16), LPC_3450}, 586 { PCI_VDEVICE(INTEL, 0x5031), LPC_EP80579}, 587 { PCI_VDEVICE(INTEL, 0x1c41), LPC_CPT}, 588 { PCI_VDEVICE(INTEL, 0x1c42), LPC_CPTD}, 589 { PCI_VDEVICE(INTEL, 0x1c43), LPC_CPTM}, 590 { PCI_VDEVICE(INTEL, 0x1c44), LPC_CPT}, 591 { PCI_VDEVICE(INTEL, 0x1c45), LPC_CPT}, 592 { PCI_VDEVICE(INTEL, 0x1c46), LPC_CPT}, 593 { PCI_VDEVICE(INTEL, 0x1c47), LPC_CPT}, 594 { PCI_VDEVICE(INTEL, 0x1c48), LPC_CPT}, 595 { PCI_VDEVICE(INTEL, 0x1c49), LPC_CPT}, 596 { PCI_VDEVICE(INTEL, 0x1c4a), LPC_CPT}, 597 { PCI_VDEVICE(INTEL, 0x1c4b), LPC_CPT}, 598 { PCI_VDEVICE(INTEL, 0x1c4c), LPC_CPT}, 599 { PCI_VDEVICE(INTEL, 0x1c4d), LPC_CPT}, 600 { PCI_VDEVICE(INTEL, 0x1c4e), LPC_CPT}, 601 { PCI_VDEVICE(INTEL, 0x1c4f), LPC_CPT}, 602 { PCI_VDEVICE(INTEL, 0x1c50), LPC_CPT}, 603 { PCI_VDEVICE(INTEL, 0x1c51), LPC_CPT}, 604 { PCI_VDEVICE(INTEL, 0x1c52), LPC_CPT}, 605 { PCI_VDEVICE(INTEL, 0x1c53), LPC_CPT}, 606 { PCI_VDEVICE(INTEL, 0x1c54), LPC_CPT}, 607 { PCI_VDEVICE(INTEL, 0x1c55), LPC_CPT}, 608 { PCI_VDEVICE(INTEL, 0x1c56), LPC_CPT}, 609 { PCI_VDEVICE(INTEL, 0x1c57), LPC_CPT}, 610 { PCI_VDEVICE(INTEL, 0x1c58), LPC_CPT}, 611 { PCI_VDEVICE(INTEL, 0x1c59), LPC_CPT}, 612 { PCI_VDEVICE(INTEL, 0x1c5a), LPC_CPT}, 613 { PCI_VDEVICE(INTEL, 0x1c5b), LPC_CPT}, 614 { PCI_VDEVICE(INTEL, 0x1c5c), LPC_CPT}, 615 { PCI_VDEVICE(INTEL, 0x1c5d), LPC_CPT}, 616 { PCI_VDEVICE(INTEL, 0x1c5e), LPC_CPT}, 617 { PCI_VDEVICE(INTEL, 0x1c5f), LPC_CPT}, 618 { PCI_VDEVICE(INTEL, 0x1d40), LPC_PBG}, 619 { PCI_VDEVICE(INTEL, 0x1d41), LPC_PBG}, 620 { PCI_VDEVICE(INTEL, 0x2310), LPC_DH89XXCC}, 621 { PCI_VDEVICE(INTEL, 0x1e40), LPC_PPT}, 622 { PCI_VDEVICE(INTEL, 0x1e41), LPC_PPT}, 623 { PCI_VDEVICE(INTEL, 0x1e42), LPC_PPT}, 624 { PCI_VDEVICE(INTEL, 0x1e43), LPC_PPT}, 625 { PCI_VDEVICE(INTEL, 0x1e44), LPC_PPT}, 626 { PCI_VDEVICE(INTEL, 0x1e45), LPC_PPT}, 627 { PCI_VDEVICE(INTEL, 0x1e46), LPC_PPT}, 628 { PCI_VDEVICE(INTEL, 0x1e47), LPC_PPT}, 629 { PCI_VDEVICE(INTEL, 0x1e48), LPC_PPT}, 630 { PCI_VDEVICE(INTEL, 0x1e49), LPC_PPT}, 631 { PCI_VDEVICE(INTEL, 0x1e4a), LPC_PPT}, 632 { PCI_VDEVICE(INTEL, 0x1e4b), LPC_PPT}, 633 { PCI_VDEVICE(INTEL, 0x1e4c), LPC_PPT}, 634 { PCI_VDEVICE(INTEL, 0x1e4d), LPC_PPT}, 635 { PCI_VDEVICE(INTEL, 0x1e4e), LPC_PPT}, 636 { PCI_VDEVICE(INTEL, 0x1e4f), LPC_PPT}, 637 { PCI_VDEVICE(INTEL, 0x1e50), LPC_PPT}, 638 { PCI_VDEVICE(INTEL, 0x1e51), LPC_PPT}, 639 { PCI_VDEVICE(INTEL, 0x1e52), LPC_PPT}, 640 { PCI_VDEVICE(INTEL, 0x1e53), LPC_PPT}, 641 { PCI_VDEVICE(INTEL, 0x1e54), LPC_PPT}, 642 { PCI_VDEVICE(INTEL, 0x1e55), LPC_PPT}, 643 { PCI_VDEVICE(INTEL, 0x1e56), LPC_PPT}, 644 { PCI_VDEVICE(INTEL, 0x1e57), LPC_PPT}, 645 { PCI_VDEVICE(INTEL, 0x1e58), LPC_PPT}, 646 { PCI_VDEVICE(INTEL, 0x1e59), LPC_PPT}, 647 { PCI_VDEVICE(INTEL, 0x1e5a), LPC_PPT}, 648 { PCI_VDEVICE(INTEL, 0x1e5b), LPC_PPT}, 649 { PCI_VDEVICE(INTEL, 0x1e5c), LPC_PPT}, 650 { PCI_VDEVICE(INTEL, 0x1e5d), LPC_PPT}, 651 { PCI_VDEVICE(INTEL, 0x1e5e), LPC_PPT}, 652 { PCI_VDEVICE(INTEL, 0x1e5f), LPC_PPT}, 653 { PCI_VDEVICE(INTEL, 0x8c40), LPC_LPT}, 654 { PCI_VDEVICE(INTEL, 0x8c41), LPC_LPT}, 655 { PCI_VDEVICE(INTEL, 0x8c42), LPC_LPT}, 656 { PCI_VDEVICE(INTEL, 0x8c43), LPC_LPT}, 657 { PCI_VDEVICE(INTEL, 0x8c44), LPC_LPT}, 658 { PCI_VDEVICE(INTEL, 0x8c45), LPC_LPT}, 659 { PCI_VDEVICE(INTEL, 0x8c46), LPC_LPT}, 660 { PCI_VDEVICE(INTEL, 0x8c47), LPC_LPT}, 661 { PCI_VDEVICE(INTEL, 0x8c48), LPC_LPT}, 662 { PCI_VDEVICE(INTEL, 0x8c49), LPC_LPT}, 663 { PCI_VDEVICE(INTEL, 0x8c4a), LPC_LPT}, 664 { PCI_VDEVICE(INTEL, 0x8c4b), LPC_LPT}, 665 { PCI_VDEVICE(INTEL, 0x8c4c), LPC_LPT}, 666 { PCI_VDEVICE(INTEL, 0x8c4d), LPC_LPT}, 667 { PCI_VDEVICE(INTEL, 0x8c4e), LPC_LPT}, 668 { PCI_VDEVICE(INTEL, 0x8c4f), LPC_LPT}, 669 { PCI_VDEVICE(INTEL, 0x8c50), LPC_LPT}, 670 { PCI_VDEVICE(INTEL, 0x8c51), LPC_LPT}, 671 { PCI_VDEVICE(INTEL, 0x8c52), LPC_LPT}, 672 { PCI_VDEVICE(INTEL, 0x8c53), LPC_LPT}, 673 { PCI_VDEVICE(INTEL, 0x8c54), LPC_LPT}, 674 { PCI_VDEVICE(INTEL, 0x8c55), LPC_LPT}, 675 { PCI_VDEVICE(INTEL, 0x8c56), LPC_LPT}, 676 { PCI_VDEVICE(INTEL, 0x8c57), LPC_LPT}, 677 { PCI_VDEVICE(INTEL, 0x8c58), LPC_LPT}, 678 { PCI_VDEVICE(INTEL, 0x8c59), LPC_LPT}, 679 { PCI_VDEVICE(INTEL, 0x8c5a), LPC_LPT}, 680 { PCI_VDEVICE(INTEL, 0x8c5b), LPC_LPT}, 681 { PCI_VDEVICE(INTEL, 0x8c5c), LPC_LPT}, 682 { PCI_VDEVICE(INTEL, 0x8c5d), LPC_LPT}, 683 { PCI_VDEVICE(INTEL, 0x8c5e), LPC_LPT}, 684 { PCI_VDEVICE(INTEL, 0x8c5f), LPC_LPT}, 685 { PCI_VDEVICE(INTEL, 0x9c40), LPC_LPT_LP}, 686 { PCI_VDEVICE(INTEL, 0x9c41), LPC_LPT_LP}, 687 { PCI_VDEVICE(INTEL, 0x9c42), LPC_LPT_LP}, 688 { PCI_VDEVICE(INTEL, 0x9c43), LPC_LPT_LP}, 689 { PCI_VDEVICE(INTEL, 0x9c44), LPC_LPT_LP}, 690 { PCI_VDEVICE(INTEL, 0x9c45), LPC_LPT_LP}, 691 { PCI_VDEVICE(INTEL, 0x9c46), LPC_LPT_LP}, 692 { PCI_VDEVICE(INTEL, 0x9c47), LPC_LPT_LP}, 693 { PCI_VDEVICE(INTEL, 0x8d40), LPC_WBG}, 694 { PCI_VDEVICE(INTEL, 0x8d41), LPC_WBG}, 695 { PCI_VDEVICE(INTEL, 0x8d42), LPC_WBG}, 696 { PCI_VDEVICE(INTEL, 0x8d43), LPC_WBG}, 697 { PCI_VDEVICE(INTEL, 0x8d44), LPC_WBG}, 698 { PCI_VDEVICE(INTEL, 0x8d45), LPC_WBG}, 699 { PCI_VDEVICE(INTEL, 0x8d46), LPC_WBG}, 700 { PCI_VDEVICE(INTEL, 0x8d47), LPC_WBG}, 701 { PCI_VDEVICE(INTEL, 0x8d48), LPC_WBG}, 702 { PCI_VDEVICE(INTEL, 0x8d49), LPC_WBG}, 703 { PCI_VDEVICE(INTEL, 0x8d4a), LPC_WBG}, 704 { PCI_VDEVICE(INTEL, 0x8d4b), LPC_WBG}, 705 { PCI_VDEVICE(INTEL, 0x8d4c), LPC_WBG}, 706 { PCI_VDEVICE(INTEL, 0x8d4d), LPC_WBG}, 707 { PCI_VDEVICE(INTEL, 0x8d4e), LPC_WBG}, 708 { PCI_VDEVICE(INTEL, 0x8d4f), LPC_WBG}, 709 { PCI_VDEVICE(INTEL, 0x8d50), LPC_WBG}, 710 { PCI_VDEVICE(INTEL, 0x8d51), LPC_WBG}, 711 { PCI_VDEVICE(INTEL, 0x8d52), LPC_WBG}, 712 { PCI_VDEVICE(INTEL, 0x8d53), LPC_WBG}, 713 { PCI_VDEVICE(INTEL, 0x8d54), LPC_WBG}, 714 { PCI_VDEVICE(INTEL, 0x8d55), LPC_WBG}, 715 { PCI_VDEVICE(INTEL, 0x8d56), LPC_WBG}, 716 { PCI_VDEVICE(INTEL, 0x8d57), LPC_WBG}, 717 { PCI_VDEVICE(INTEL, 0x8d58), LPC_WBG}, 718 { PCI_VDEVICE(INTEL, 0x8d59), LPC_WBG}, 719 { PCI_VDEVICE(INTEL, 0x8d5a), LPC_WBG}, 720 { PCI_VDEVICE(INTEL, 0x8d5b), LPC_WBG}, 721 { PCI_VDEVICE(INTEL, 0x8d5c), LPC_WBG}, 722 { PCI_VDEVICE(INTEL, 0x8d5d), LPC_WBG}, 723 { PCI_VDEVICE(INTEL, 0x8d5e), LPC_WBG}, 724 { PCI_VDEVICE(INTEL, 0x8d5f), LPC_WBG}, 725 { PCI_VDEVICE(INTEL, 0x1f38), LPC_AVN}, 726 { PCI_VDEVICE(INTEL, 0x1f39), LPC_AVN}, 727 { PCI_VDEVICE(INTEL, 0x1f3a), LPC_AVN}, 728 { PCI_VDEVICE(INTEL, 0x1f3b), LPC_AVN}, 729 { PCI_VDEVICE(INTEL, 0x2390), LPC_COLETO}, 730 { PCI_VDEVICE(INTEL, 0x9cc1), LPC_WPT_LP}, 731 { PCI_VDEVICE(INTEL, 0x9cc2), LPC_WPT_LP}, 732 { PCI_VDEVICE(INTEL, 0x9cc3), LPC_WPT_LP}, 733 { PCI_VDEVICE(INTEL, 0x9cc5), LPC_WPT_LP}, 734 { PCI_VDEVICE(INTEL, 0x9cc6), LPC_WPT_LP}, 735 { PCI_VDEVICE(INTEL, 0x9cc7), LPC_WPT_LP}, 736 { PCI_VDEVICE(INTEL, 0x9cc9), LPC_WPT_LP}, 737 { 0, }, /* End of list */ 738 }; 739 MODULE_DEVICE_TABLE(pci, lpc_ich_ids); 740 741 static void lpc_ich_restore_config_space(struct pci_dev *dev) 742 { 743 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 744 745 if (priv->acpi.save >= 0) { 746 pci_write_config_byte(dev, priv->acpi.ctrl, priv->acpi.save); 747 priv->acpi.save = -1; 748 } 749 750 if (priv->gpio.save >= 0) { 751 pci_write_config_byte(dev, priv->gpio.ctrl, priv->gpio.save); 752 priv->gpio.save = -1; 753 } 754 } 755 756 static void lpc_ich_enable_acpi_space(struct pci_dev *dev) 757 { 758 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 759 u8 reg_save; 760 761 pci_read_config_byte(dev, priv->acpi.ctrl, ®_save); 762 pci_write_config_byte(dev, priv->acpi.ctrl, reg_save | 0x10); 763 priv->acpi.save = reg_save; 764 } 765 766 static void lpc_ich_enable_gpio_space(struct pci_dev *dev) 767 { 768 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 769 u8 reg_save; 770 771 pci_read_config_byte(dev, priv->gpio.ctrl, ®_save); 772 pci_write_config_byte(dev, priv->gpio.ctrl, reg_save | 0x10); 773 priv->gpio.save = reg_save; 774 } 775 776 static void lpc_ich_finalize_cell(struct pci_dev *dev, struct mfd_cell *cell) 777 { 778 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 779 780 cell->platform_data = &lpc_chipset_info[priv->chipset]; 781 cell->pdata_size = sizeof(struct lpc_ich_info); 782 } 783 784 /* 785 * We don't check for resource conflict globally. There are 2 or 3 independent 786 * GPIO groups and it's enough to have access to one of these to instantiate 787 * the device. 788 */ 789 static int lpc_ich_check_conflict_gpio(struct resource *res) 790 { 791 int ret; 792 u8 use_gpio = 0; 793 794 if (resource_size(res) >= 0x50 && 795 !acpi_check_region(res->start + 0x40, 0x10, "LPC ICH GPIO3")) 796 use_gpio |= 1 << 2; 797 798 if (!acpi_check_region(res->start + 0x30, 0x10, "LPC ICH GPIO2")) 799 use_gpio |= 1 << 1; 800 801 ret = acpi_check_region(res->start + 0x00, 0x30, "LPC ICH GPIO1"); 802 if (!ret) 803 use_gpio |= 1 << 0; 804 805 return use_gpio ? use_gpio : ret; 806 } 807 808 static int lpc_ich_init_gpio(struct pci_dev *dev) 809 { 810 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 811 u32 base_addr_cfg; 812 u32 base_addr; 813 int ret; 814 bool acpi_conflict = false; 815 struct resource *res; 816 817 /* Setup power management base register */ 818 pci_read_config_dword(dev, priv->acpi.base, &base_addr_cfg); 819 base_addr = base_addr_cfg & 0x0000ff80; 820 if (!base_addr) { 821 dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n"); 822 lpc_ich_cells[LPC_GPIO].num_resources--; 823 goto gpe0_done; 824 } 825 826 res = &gpio_ich_res[ICH_RES_GPE0]; 827 res->start = base_addr + ACPIBASE_GPE_OFF; 828 res->end = base_addr + ACPIBASE_GPE_END; 829 ret = acpi_check_resource_conflict(res); 830 if (ret) { 831 /* 832 * This isn't fatal for the GPIO, but we have to make sure that 833 * the platform_device subsystem doesn't see this resource 834 * or it will register an invalid region. 835 */ 836 lpc_ich_cells[LPC_GPIO].num_resources--; 837 acpi_conflict = true; 838 } else { 839 lpc_ich_enable_acpi_space(dev); 840 } 841 842 gpe0_done: 843 /* Setup GPIO base register */ 844 pci_read_config_dword(dev, priv->gpio.base, &base_addr_cfg); 845 base_addr = base_addr_cfg & 0x0000ff80; 846 if (!base_addr) { 847 dev_notice(&dev->dev, "I/O space for GPIO uninitialized\n"); 848 ret = -ENODEV; 849 goto gpio_done; 850 } 851 852 /* Older devices provide fewer GPIO and have a smaller resource size. */ 853 res = &gpio_ich_res[ICH_RES_GPIO]; 854 res->start = base_addr; 855 switch (lpc_chipset_info[priv->chipset].gpio_version) { 856 case ICH_V5_GPIO: 857 case ICH_V10CORP_GPIO: 858 res->end = res->start + 128 - 1; 859 break; 860 default: 861 res->end = res->start + 64 - 1; 862 break; 863 } 864 865 ret = lpc_ich_check_conflict_gpio(res); 866 if (ret < 0) { 867 /* this isn't necessarily fatal for the GPIO */ 868 acpi_conflict = true; 869 goto gpio_done; 870 } 871 lpc_chipset_info[priv->chipset].use_gpio = ret; 872 lpc_ich_enable_gpio_space(dev); 873 874 lpc_ich_finalize_cell(dev, &lpc_ich_cells[LPC_GPIO]); 875 ret = mfd_add_devices(&dev->dev, -1, &lpc_ich_cells[LPC_GPIO], 876 1, NULL, 0, NULL); 877 878 gpio_done: 879 if (acpi_conflict) 880 pr_warn("Resource conflict(s) found affecting %s\n", 881 lpc_ich_cells[LPC_GPIO].name); 882 return ret; 883 } 884 885 static int lpc_ich_init_wdt(struct pci_dev *dev) 886 { 887 struct lpc_ich_priv *priv = pci_get_drvdata(dev); 888 u32 base_addr_cfg; 889 u32 base_addr; 890 int ret; 891 struct resource *res; 892 893 /* Setup power management base register */ 894 pci_read_config_dword(dev, priv->acpi.base, &base_addr_cfg); 895 base_addr = base_addr_cfg & 0x0000ff80; 896 if (!base_addr) { 897 dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n"); 898 ret = -ENODEV; 899 goto wdt_done; 900 } 901 902 res = wdt_io_res(ICH_RES_IO_TCO); 903 res->start = base_addr + ACPIBASE_TCO_OFF; 904 res->end = base_addr + ACPIBASE_TCO_END; 905 906 res = wdt_io_res(ICH_RES_IO_SMI); 907 res->start = base_addr + ACPIBASE_SMI_OFF; 908 res->end = base_addr + ACPIBASE_SMI_END; 909 910 lpc_ich_enable_acpi_space(dev); 911 912 /* 913 * Get the Memory-Mapped GCS register. To get access to it 914 * we have to read RCBA from PCI Config space 0xf0 and use 915 * it as base. GCS = RCBA + ICH6_GCS(0x3410). 916 */ 917 if (lpc_chipset_info[priv->chipset].iTCO_version == 1) { 918 /* Don't register iomem for TCO ver 1 */ 919 lpc_ich_cells[LPC_WDT].num_resources--; 920 } else { 921 pci_read_config_dword(dev, RCBABASE, &base_addr_cfg); 922 base_addr = base_addr_cfg & 0xffffc000; 923 if (!(base_addr_cfg & 1)) { 924 dev_notice(&dev->dev, "RCBA is disabled by " 925 "hardware/BIOS, device disabled\n"); 926 ret = -ENODEV; 927 goto wdt_done; 928 } 929 res = wdt_mem_res(ICH_RES_MEM_GCS); 930 res->start = base_addr + ACPIBASE_GCS_OFF; 931 res->end = base_addr + ACPIBASE_GCS_END; 932 } 933 934 lpc_ich_finalize_cell(dev, &lpc_ich_cells[LPC_WDT]); 935 ret = mfd_add_devices(&dev->dev, -1, &lpc_ich_cells[LPC_WDT], 936 1, NULL, 0, NULL); 937 938 wdt_done: 939 return ret; 940 } 941 942 static int lpc_ich_probe(struct pci_dev *dev, 943 const struct pci_device_id *id) 944 { 945 struct lpc_ich_priv *priv; 946 int ret; 947 bool cell_added = false; 948 949 priv = devm_kzalloc(&dev->dev, 950 sizeof(struct lpc_ich_priv), GFP_KERNEL); 951 if (!priv) 952 return -ENOMEM; 953 954 priv->chipset = id->driver_data; 955 priv->acpi.save = -1; 956 priv->acpi.base = ACPIBASE; 957 priv->acpi.ctrl = ACPICTRL; 958 959 priv->gpio.save = -1; 960 if (priv->chipset <= LPC_ICH5) { 961 priv->gpio.base = GPIOBASE_ICH0; 962 priv->gpio.ctrl = GPIOCTRL_ICH0; 963 } else { 964 priv->gpio.base = GPIOBASE_ICH6; 965 priv->gpio.ctrl = GPIOCTRL_ICH6; 966 } 967 968 pci_set_drvdata(dev, priv); 969 970 ret = lpc_ich_init_wdt(dev); 971 if (!ret) 972 cell_added = true; 973 974 ret = lpc_ich_init_gpio(dev); 975 if (!ret) 976 cell_added = true; 977 978 /* 979 * We only care if at least one or none of the cells registered 980 * successfully. 981 */ 982 if (!cell_added) { 983 dev_warn(&dev->dev, "No MFD cells added\n"); 984 lpc_ich_restore_config_space(dev); 985 return -ENODEV; 986 } 987 988 return 0; 989 } 990 991 static void lpc_ich_remove(struct pci_dev *dev) 992 { 993 mfd_remove_devices(&dev->dev); 994 lpc_ich_restore_config_space(dev); 995 } 996 997 static struct pci_driver lpc_ich_driver = { 998 .name = "lpc_ich", 999 .id_table = lpc_ich_ids, 1000 .probe = lpc_ich_probe, 1001 .remove = lpc_ich_remove, 1002 }; 1003 1004 module_pci_driver(lpc_ich_driver); 1005 1006 MODULE_AUTHOR("Aaron Sierra <asierra@xes-inc.com>"); 1007 MODULE_DESCRIPTION("LPC interface for Intel ICH"); 1008 MODULE_LICENSE("GPL"); 1009