1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * processor_thermal_device.c 4 * Copyright (c) 2014, Intel Corporation. 5 */ 6 #include <linux/kernel.h> 7 #include <linux/module.h> 8 #include <linux/init.h> 9 #include <linux/pci.h> 10 #include <linux/interrupt.h> 11 #include <linux/platform_device.h> 12 #include <linux/acpi.h> 13 #include <linux/thermal.h> 14 #include <linux/cpuhotplug.h> 15 #include <linux/intel_rapl.h> 16 #include "int340x_thermal_zone.h" 17 #include "../intel_soc_dts_iosf.h" 18 19 /* Broadwell-U/HSB thermal reporting device */ 20 #define PCI_DEVICE_ID_PROC_BDW_THERMAL 0x1603 21 #define PCI_DEVICE_ID_PROC_HSB_THERMAL 0x0A03 22 23 /* Skylake thermal reporting device */ 24 #define PCI_DEVICE_ID_PROC_SKL_THERMAL 0x1903 25 26 /* CannonLake thermal reporting device */ 27 #define PCI_DEVICE_ID_PROC_CNL_THERMAL 0x5a03 28 #define PCI_DEVICE_ID_PROC_CFL_THERMAL 0x3E83 29 30 /* Braswell thermal reporting device */ 31 #define PCI_DEVICE_ID_PROC_BSW_THERMAL 0x22DC 32 33 /* Broxton thermal reporting device */ 34 #define PCI_DEVICE_ID_PROC_BXT0_THERMAL 0x0A8C 35 #define PCI_DEVICE_ID_PROC_BXT1_THERMAL 0x1A8C 36 #define PCI_DEVICE_ID_PROC_BXTX_THERMAL 0x4A8C 37 #define PCI_DEVICE_ID_PROC_BXTP_THERMAL 0x5A8C 38 39 /* GeminiLake thermal reporting device */ 40 #define PCI_DEVICE_ID_PROC_GLK_THERMAL 0x318C 41 42 /* IceLake thermal reporting device */ 43 #define PCI_DEVICE_ID_PROC_ICL_THERMAL 0x8a03 44 45 /* JasperLake thermal reporting device */ 46 #define PCI_DEVICE_ID_PROC_JSL_THERMAL 0x4503 47 48 /* TigerLake thermal reporting device */ 49 #define PCI_DEVICE_ID_PROC_TGL_THERMAL 0x9A03 50 51 #define DRV_NAME "proc_thermal" 52 53 struct power_config { 54 u32 index; 55 u32 min_uw; 56 u32 max_uw; 57 u32 tmin_us; 58 u32 tmax_us; 59 u32 step_uw; 60 }; 61 62 struct proc_thermal_device { 63 struct device *dev; 64 struct acpi_device *adev; 65 struct power_config power_limits[2]; 66 struct int34x_thermal_zone *int340x_zone; 67 struct intel_soc_dts_sensors *soc_dts; 68 void __iomem *mmio_base; 69 }; 70 71 enum proc_thermal_emum_mode_type { 72 PROC_THERMAL_NONE, 73 PROC_THERMAL_PCI, 74 PROC_THERMAL_PLATFORM_DEV 75 }; 76 77 struct rapl_mmio_regs { 78 u64 reg_unit; 79 u64 regs[RAPL_DOMAIN_MAX][RAPL_DOMAIN_REG_MAX]; 80 int limits[RAPL_DOMAIN_MAX]; 81 }; 82 83 /* 84 * We can have only one type of enumeration, PCI or Platform, 85 * not both. So we don't need instance specific data. 86 */ 87 static enum proc_thermal_emum_mode_type proc_thermal_emum_mode = 88 PROC_THERMAL_NONE; 89 90 #define POWER_LIMIT_SHOW(index, suffix) \ 91 static ssize_t power_limit_##index##_##suffix##_show(struct device *dev, \ 92 struct device_attribute *attr, \ 93 char *buf) \ 94 { \ 95 struct proc_thermal_device *proc_dev = dev_get_drvdata(dev); \ 96 \ 97 if (proc_thermal_emum_mode == PROC_THERMAL_NONE) { \ 98 dev_warn(dev, "Attempted to get power limit before device was initialized!\n"); \ 99 return 0; \ 100 } \ 101 \ 102 return sprintf(buf, "%lu\n",\ 103 (unsigned long)proc_dev->power_limits[index].suffix * 1000); \ 104 } 105 106 POWER_LIMIT_SHOW(0, min_uw) 107 POWER_LIMIT_SHOW(0, max_uw) 108 POWER_LIMIT_SHOW(0, step_uw) 109 POWER_LIMIT_SHOW(0, tmin_us) 110 POWER_LIMIT_SHOW(0, tmax_us) 111 112 POWER_LIMIT_SHOW(1, min_uw) 113 POWER_LIMIT_SHOW(1, max_uw) 114 POWER_LIMIT_SHOW(1, step_uw) 115 POWER_LIMIT_SHOW(1, tmin_us) 116 POWER_LIMIT_SHOW(1, tmax_us) 117 118 static DEVICE_ATTR_RO(power_limit_0_min_uw); 119 static DEVICE_ATTR_RO(power_limit_0_max_uw); 120 static DEVICE_ATTR_RO(power_limit_0_step_uw); 121 static DEVICE_ATTR_RO(power_limit_0_tmin_us); 122 static DEVICE_ATTR_RO(power_limit_0_tmax_us); 123 124 static DEVICE_ATTR_RO(power_limit_1_min_uw); 125 static DEVICE_ATTR_RO(power_limit_1_max_uw); 126 static DEVICE_ATTR_RO(power_limit_1_step_uw); 127 static DEVICE_ATTR_RO(power_limit_1_tmin_us); 128 static DEVICE_ATTR_RO(power_limit_1_tmax_us); 129 130 static struct attribute *power_limit_attrs[] = { 131 &dev_attr_power_limit_0_min_uw.attr, 132 &dev_attr_power_limit_1_min_uw.attr, 133 &dev_attr_power_limit_0_max_uw.attr, 134 &dev_attr_power_limit_1_max_uw.attr, 135 &dev_attr_power_limit_0_step_uw.attr, 136 &dev_attr_power_limit_1_step_uw.attr, 137 &dev_attr_power_limit_0_tmin_us.attr, 138 &dev_attr_power_limit_1_tmin_us.attr, 139 &dev_attr_power_limit_0_tmax_us.attr, 140 &dev_attr_power_limit_1_tmax_us.attr, 141 NULL 142 }; 143 144 static const struct attribute_group power_limit_attribute_group = { 145 .attrs = power_limit_attrs, 146 .name = "power_limits" 147 }; 148 149 static ssize_t tcc_offset_degree_celsius_show(struct device *dev, 150 struct device_attribute *attr, char *buf) 151 { 152 u64 val; 153 int err; 154 155 err = rdmsrl_safe(MSR_IA32_TEMPERATURE_TARGET, &val); 156 if (err) 157 return err; 158 159 val = (val >> 24) & 0xff; 160 return sprintf(buf, "%d\n", (int)val); 161 } 162 163 static int tcc_offset_update(int tcc) 164 { 165 u64 val; 166 int err; 167 168 if (!tcc) 169 return -EINVAL; 170 171 err = rdmsrl_safe(MSR_IA32_TEMPERATURE_TARGET, &val); 172 if (err) 173 return err; 174 175 val &= ~GENMASK_ULL(31, 24); 176 val |= (tcc & 0xff) << 24; 177 178 err = wrmsrl_safe(MSR_IA32_TEMPERATURE_TARGET, val); 179 if (err) 180 return err; 181 182 return 0; 183 } 184 185 static int tcc_offset_save; 186 187 static ssize_t tcc_offset_degree_celsius_store(struct device *dev, 188 struct device_attribute *attr, const char *buf, 189 size_t count) 190 { 191 u64 val; 192 int tcc, err; 193 194 err = rdmsrl_safe(MSR_PLATFORM_INFO, &val); 195 if (err) 196 return err; 197 198 if (!(val & BIT(30))) 199 return -EACCES; 200 201 if (kstrtoint(buf, 0, &tcc)) 202 return -EINVAL; 203 204 err = tcc_offset_update(tcc); 205 if (err) 206 return err; 207 208 tcc_offset_save = tcc; 209 210 return count; 211 } 212 213 static DEVICE_ATTR_RW(tcc_offset_degree_celsius); 214 215 static int stored_tjmax; /* since it is fixed, we can have local storage */ 216 217 static int get_tjmax(void) 218 { 219 u32 eax, edx; 220 u32 val; 221 int err; 222 223 err = rdmsr_safe(MSR_IA32_TEMPERATURE_TARGET, &eax, &edx); 224 if (err) 225 return err; 226 227 val = (eax >> 16) & 0xff; 228 if (val) 229 return val; 230 231 return -EINVAL; 232 } 233 234 static int read_temp_msr(int *temp) 235 { 236 int cpu; 237 u32 eax, edx; 238 int err; 239 unsigned long curr_temp_off = 0; 240 241 *temp = 0; 242 243 for_each_online_cpu(cpu) { 244 err = rdmsr_safe_on_cpu(cpu, MSR_IA32_THERM_STATUS, &eax, 245 &edx); 246 if (err) 247 goto err_ret; 248 else { 249 if (eax & 0x80000000) { 250 curr_temp_off = (eax >> 16) & 0x7f; 251 if (!*temp || curr_temp_off < *temp) 252 *temp = curr_temp_off; 253 } else { 254 err = -EINVAL; 255 goto err_ret; 256 } 257 } 258 } 259 260 return 0; 261 err_ret: 262 return err; 263 } 264 265 static int proc_thermal_get_zone_temp(struct thermal_zone_device *zone, 266 int *temp) 267 { 268 int ret; 269 270 ret = read_temp_msr(temp); 271 if (!ret) 272 *temp = (stored_tjmax - *temp) * 1000; 273 274 return ret; 275 } 276 277 static struct thermal_zone_device_ops proc_thermal_local_ops = { 278 .get_temp = proc_thermal_get_zone_temp, 279 }; 280 281 static int proc_thermal_read_ppcc(struct proc_thermal_device *proc_priv) 282 { 283 int i; 284 acpi_status status; 285 struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL }; 286 union acpi_object *elements, *ppcc; 287 union acpi_object *p; 288 int ret = 0; 289 290 status = acpi_evaluate_object(proc_priv->adev->handle, "PPCC", 291 NULL, &buf); 292 if (ACPI_FAILURE(status)) 293 return -ENODEV; 294 295 p = buf.pointer; 296 if (!p || (p->type != ACPI_TYPE_PACKAGE)) { 297 dev_err(proc_priv->dev, "Invalid PPCC data\n"); 298 ret = -EFAULT; 299 goto free_buffer; 300 } 301 302 if (!p->package.count) { 303 dev_err(proc_priv->dev, "Invalid PPCC package size\n"); 304 ret = -EFAULT; 305 goto free_buffer; 306 } 307 308 for (i = 0; i < min((int)p->package.count - 1, 2); ++i) { 309 elements = &(p->package.elements[i+1]); 310 if (elements->type != ACPI_TYPE_PACKAGE || 311 elements->package.count != 6) { 312 ret = -EFAULT; 313 goto free_buffer; 314 } 315 ppcc = elements->package.elements; 316 proc_priv->power_limits[i].index = ppcc[0].integer.value; 317 proc_priv->power_limits[i].min_uw = ppcc[1].integer.value; 318 proc_priv->power_limits[i].max_uw = ppcc[2].integer.value; 319 proc_priv->power_limits[i].tmin_us = ppcc[3].integer.value; 320 proc_priv->power_limits[i].tmax_us = ppcc[4].integer.value; 321 proc_priv->power_limits[i].step_uw = ppcc[5].integer.value; 322 } 323 324 free_buffer: 325 kfree(buf.pointer); 326 327 return ret; 328 } 329 330 #define PROC_POWER_CAPABILITY_CHANGED 0x83 331 static void proc_thermal_notify(acpi_handle handle, u32 event, void *data) 332 { 333 struct proc_thermal_device *proc_priv = data; 334 335 if (!proc_priv) 336 return; 337 338 switch (event) { 339 case PROC_POWER_CAPABILITY_CHANGED: 340 proc_thermal_read_ppcc(proc_priv); 341 int340x_thermal_zone_device_update(proc_priv->int340x_zone, 342 THERMAL_DEVICE_POWER_CAPABILITY_CHANGED); 343 break; 344 default: 345 dev_dbg(proc_priv->dev, "Unsupported event [0x%x]\n", event); 346 break; 347 } 348 } 349 350 351 static int proc_thermal_add(struct device *dev, 352 struct proc_thermal_device **priv) 353 { 354 struct proc_thermal_device *proc_priv; 355 struct acpi_device *adev; 356 acpi_status status; 357 unsigned long long tmp; 358 struct thermal_zone_device_ops *ops = NULL; 359 int ret; 360 361 adev = ACPI_COMPANION(dev); 362 if (!adev) 363 return -ENODEV; 364 365 proc_priv = devm_kzalloc(dev, sizeof(*proc_priv), GFP_KERNEL); 366 if (!proc_priv) 367 return -ENOMEM; 368 369 proc_priv->dev = dev; 370 proc_priv->adev = adev; 371 *priv = proc_priv; 372 373 ret = proc_thermal_read_ppcc(proc_priv); 374 if (ret) 375 return ret; 376 377 status = acpi_evaluate_integer(adev->handle, "_TMP", NULL, &tmp); 378 if (ACPI_FAILURE(status)) { 379 /* there is no _TMP method, add local method */ 380 stored_tjmax = get_tjmax(); 381 if (stored_tjmax > 0) 382 ops = &proc_thermal_local_ops; 383 } 384 385 proc_priv->int340x_zone = int340x_thermal_zone_add(adev, ops); 386 if (IS_ERR(proc_priv->int340x_zone)) { 387 return PTR_ERR(proc_priv->int340x_zone); 388 } else 389 ret = 0; 390 391 ret = acpi_install_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY, 392 proc_thermal_notify, 393 (void *)proc_priv); 394 if (ret) 395 goto remove_zone; 396 397 return 0; 398 399 remove_zone: 400 int340x_thermal_zone_remove(proc_priv->int340x_zone); 401 402 return ret; 403 } 404 405 static void proc_thermal_remove(struct proc_thermal_device *proc_priv) 406 { 407 acpi_remove_notify_handler(proc_priv->adev->handle, 408 ACPI_DEVICE_NOTIFY, proc_thermal_notify); 409 int340x_thermal_zone_remove(proc_priv->int340x_zone); 410 sysfs_remove_file(&proc_priv->dev->kobj, &dev_attr_tcc_offset_degree_celsius.attr); 411 sysfs_remove_group(&proc_priv->dev->kobj, 412 &power_limit_attribute_group); 413 } 414 415 static int int3401_add(struct platform_device *pdev) 416 { 417 struct proc_thermal_device *proc_priv; 418 int ret; 419 420 if (proc_thermal_emum_mode == PROC_THERMAL_PCI) { 421 dev_err(&pdev->dev, "error: enumerated as PCI dev\n"); 422 return -ENODEV; 423 } 424 425 ret = proc_thermal_add(&pdev->dev, &proc_priv); 426 if (ret) 427 return ret; 428 429 platform_set_drvdata(pdev, proc_priv); 430 proc_thermal_emum_mode = PROC_THERMAL_PLATFORM_DEV; 431 432 dev_info(&pdev->dev, "Creating sysfs group for PROC_THERMAL_PLATFORM_DEV\n"); 433 434 ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_tcc_offset_degree_celsius.attr); 435 if (ret) 436 return ret; 437 438 ret = sysfs_create_group(&pdev->dev.kobj, &power_limit_attribute_group); 439 if (ret) 440 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_tcc_offset_degree_celsius.attr); 441 442 return ret; 443 } 444 445 static int int3401_remove(struct platform_device *pdev) 446 { 447 proc_thermal_remove(platform_get_drvdata(pdev)); 448 449 return 0; 450 } 451 452 static irqreturn_t proc_thermal_pci_msi_irq(int irq, void *devid) 453 { 454 struct proc_thermal_device *proc_priv; 455 struct pci_dev *pdev = devid; 456 457 proc_priv = pci_get_drvdata(pdev); 458 459 intel_soc_dts_iosf_interrupt_handler(proc_priv->soc_dts); 460 461 return IRQ_HANDLED; 462 } 463 464 #ifdef CONFIG_PROC_THERMAL_MMIO_RAPL 465 466 #define MCHBAR 0 467 468 /* RAPL Support via MMIO interface */ 469 static struct rapl_if_priv rapl_mmio_priv; 470 471 static int rapl_mmio_cpu_online(unsigned int cpu) 472 { 473 struct rapl_package *rp; 474 475 /* mmio rapl supports package 0 only for now */ 476 if (topology_physical_package_id(cpu)) 477 return 0; 478 479 rp = rapl_find_package_domain(cpu, &rapl_mmio_priv); 480 if (!rp) { 481 rp = rapl_add_package(cpu, &rapl_mmio_priv); 482 if (IS_ERR(rp)) 483 return PTR_ERR(rp); 484 } 485 cpumask_set_cpu(cpu, &rp->cpumask); 486 return 0; 487 } 488 489 static int rapl_mmio_cpu_down_prep(unsigned int cpu) 490 { 491 struct rapl_package *rp; 492 int lead_cpu; 493 494 rp = rapl_find_package_domain(cpu, &rapl_mmio_priv); 495 if (!rp) 496 return 0; 497 498 cpumask_clear_cpu(cpu, &rp->cpumask); 499 lead_cpu = cpumask_first(&rp->cpumask); 500 if (lead_cpu >= nr_cpu_ids) 501 rapl_remove_package(rp); 502 else if (rp->lead_cpu == cpu) 503 rp->lead_cpu = lead_cpu; 504 return 0; 505 } 506 507 static int rapl_mmio_read_raw(int cpu, struct reg_action *ra) 508 { 509 if (!ra->reg) 510 return -EINVAL; 511 512 ra->value = readq((void __iomem *)ra->reg); 513 ra->value &= ra->mask; 514 return 0; 515 } 516 517 static int rapl_mmio_write_raw(int cpu, struct reg_action *ra) 518 { 519 u64 val; 520 521 if (!ra->reg) 522 return -EINVAL; 523 524 val = readq((void __iomem *)ra->reg); 525 val &= ~ra->mask; 526 val |= ra->value; 527 writeq(val, (void __iomem *)ra->reg); 528 return 0; 529 } 530 531 static int proc_thermal_rapl_add(struct pci_dev *pdev, 532 struct proc_thermal_device *proc_priv, 533 struct rapl_mmio_regs *rapl_regs) 534 { 535 enum rapl_domain_reg_id reg; 536 enum rapl_domain_type domain; 537 int ret; 538 539 if (!rapl_regs) 540 return 0; 541 542 ret = pcim_iomap_regions(pdev, 1 << MCHBAR, DRV_NAME); 543 if (ret) { 544 dev_err(&pdev->dev, "cannot reserve PCI memory region\n"); 545 return -ENOMEM; 546 } 547 548 proc_priv->mmio_base = pcim_iomap_table(pdev)[MCHBAR]; 549 550 for (domain = RAPL_DOMAIN_PACKAGE; domain < RAPL_DOMAIN_MAX; domain++) { 551 for (reg = RAPL_DOMAIN_REG_LIMIT; reg < RAPL_DOMAIN_REG_MAX; reg++) 552 if (rapl_regs->regs[domain][reg]) 553 rapl_mmio_priv.regs[domain][reg] = 554 (u64)proc_priv->mmio_base + 555 rapl_regs->regs[domain][reg]; 556 rapl_mmio_priv.limits[domain] = rapl_regs->limits[domain]; 557 } 558 rapl_mmio_priv.reg_unit = (u64)proc_priv->mmio_base + rapl_regs->reg_unit; 559 560 rapl_mmio_priv.read_raw = rapl_mmio_read_raw; 561 rapl_mmio_priv.write_raw = rapl_mmio_write_raw; 562 563 rapl_mmio_priv.control_type = powercap_register_control_type(NULL, "intel-rapl-mmio", NULL); 564 if (IS_ERR(rapl_mmio_priv.control_type)) { 565 pr_debug("failed to register powercap control_type.\n"); 566 return PTR_ERR(rapl_mmio_priv.control_type); 567 } 568 569 ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "powercap/rapl:online", 570 rapl_mmio_cpu_online, rapl_mmio_cpu_down_prep); 571 if (ret < 0) { 572 powercap_unregister_control_type(rapl_mmio_priv.control_type); 573 rapl_mmio_priv.control_type = NULL; 574 return ret; 575 } 576 rapl_mmio_priv.pcap_rapl_online = ret; 577 578 return 0; 579 } 580 581 static void proc_thermal_rapl_remove(void) 582 { 583 if (IS_ERR_OR_NULL(rapl_mmio_priv.control_type)) 584 return; 585 586 cpuhp_remove_state(rapl_mmio_priv.pcap_rapl_online); 587 powercap_unregister_control_type(rapl_mmio_priv.control_type); 588 } 589 590 static const struct rapl_mmio_regs rapl_mmio_hsw = { 591 .reg_unit = 0x5938, 592 .regs[RAPL_DOMAIN_PACKAGE] = { 0x59a0, 0x593c, 0x58f0, 0, 0x5930}, 593 .regs[RAPL_DOMAIN_DRAM] = { 0x58e0, 0x58e8, 0x58ec, 0, 0}, 594 .limits[RAPL_DOMAIN_PACKAGE] = 2, 595 .limits[RAPL_DOMAIN_DRAM] = 2, 596 }; 597 598 #else 599 600 static int proc_thermal_rapl_add(struct pci_dev *pdev, 601 struct proc_thermal_device *proc_priv, 602 struct rapl_mmio_regs *rapl_regs) 603 { 604 return 0; 605 } 606 static void proc_thermal_rapl_remove(void) {} 607 static const struct rapl_mmio_regs rapl_mmio_hsw; 608 609 #endif /* CONFIG_MMIO_RAPL */ 610 611 static int proc_thermal_pci_probe(struct pci_dev *pdev, 612 const struct pci_device_id *id) 613 { 614 struct proc_thermal_device *proc_priv; 615 int ret; 616 617 if (proc_thermal_emum_mode == PROC_THERMAL_PLATFORM_DEV) { 618 dev_err(&pdev->dev, "error: enumerated as platform dev\n"); 619 return -ENODEV; 620 } 621 622 ret = pcim_enable_device(pdev); 623 if (ret < 0) { 624 dev_err(&pdev->dev, "error: could not enable device\n"); 625 return ret; 626 } 627 628 ret = proc_thermal_add(&pdev->dev, &proc_priv); 629 if (ret) 630 return ret; 631 632 ret = proc_thermal_rapl_add(pdev, proc_priv, 633 (struct rapl_mmio_regs *)id->driver_data); 634 if (ret) { 635 dev_err(&pdev->dev, "failed to add RAPL MMIO interface\n"); 636 proc_thermal_remove(proc_priv); 637 return ret; 638 } 639 640 pci_set_drvdata(pdev, proc_priv); 641 proc_thermal_emum_mode = PROC_THERMAL_PCI; 642 643 if (pdev->device == PCI_DEVICE_ID_PROC_BSW_THERMAL) { 644 /* 645 * Enumerate additional DTS sensors available via IOSF. 646 * But we are not treating as a failure condition, if 647 * there are no aux DTSs enabled or fails. This driver 648 * already exposes sensors, which can be accessed via 649 * ACPI/MSR. So we don't want to fail for auxiliary DTSs. 650 */ 651 proc_priv->soc_dts = intel_soc_dts_iosf_init( 652 INTEL_SOC_DTS_INTERRUPT_MSI, 2, 0); 653 654 if (!IS_ERR(proc_priv->soc_dts) && pdev->irq) { 655 ret = pci_enable_msi(pdev); 656 if (!ret) { 657 ret = request_threaded_irq(pdev->irq, NULL, 658 proc_thermal_pci_msi_irq, 659 IRQF_ONESHOT, "proc_thermal", 660 pdev); 661 if (ret) { 662 intel_soc_dts_iosf_exit( 663 proc_priv->soc_dts); 664 pci_disable_msi(pdev); 665 proc_priv->soc_dts = NULL; 666 } 667 } 668 } else 669 dev_err(&pdev->dev, "No auxiliary DTSs enabled\n"); 670 } 671 672 dev_info(&pdev->dev, "Creating sysfs group for PROC_THERMAL_PCI\n"); 673 674 ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_tcc_offset_degree_celsius.attr); 675 if (ret) 676 return ret; 677 678 ret = sysfs_create_group(&pdev->dev.kobj, &power_limit_attribute_group); 679 if (ret) 680 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_tcc_offset_degree_celsius.attr); 681 682 return ret; 683 } 684 685 static void proc_thermal_pci_remove(struct pci_dev *pdev) 686 { 687 struct proc_thermal_device *proc_priv = pci_get_drvdata(pdev); 688 689 if (proc_priv->soc_dts) { 690 intel_soc_dts_iosf_exit(proc_priv->soc_dts); 691 if (pdev->irq) { 692 free_irq(pdev->irq, pdev); 693 pci_disable_msi(pdev); 694 } 695 } 696 proc_thermal_rapl_remove(); 697 proc_thermal_remove(proc_priv); 698 } 699 700 #ifdef CONFIG_PM_SLEEP 701 static int proc_thermal_resume(struct device *dev) 702 { 703 struct proc_thermal_device *proc_dev; 704 705 proc_dev = dev_get_drvdata(dev); 706 proc_thermal_read_ppcc(proc_dev); 707 708 tcc_offset_update(tcc_offset_save); 709 710 return 0; 711 } 712 #else 713 #define proc_thermal_resume NULL 714 #endif 715 716 static SIMPLE_DEV_PM_OPS(proc_thermal_pm, NULL, proc_thermal_resume); 717 718 static const struct pci_device_id proc_thermal_pci_ids[] = { 719 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BDW_THERMAL)}, 720 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_HSB_THERMAL)}, 721 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_SKL_THERMAL), 722 .driver_data = (kernel_ulong_t)&rapl_mmio_hsw, }, 723 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BSW_THERMAL)}, 724 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXT0_THERMAL)}, 725 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXT1_THERMAL)}, 726 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXTX_THERMAL)}, 727 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXTP_THERMAL)}, 728 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_CNL_THERMAL)}, 729 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_CFL_THERMAL)}, 730 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_GLK_THERMAL)}, 731 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_ICL_THERMAL), 732 .driver_data = (kernel_ulong_t)&rapl_mmio_hsw, }, 733 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_JSL_THERMAL)}, 734 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_TGL_THERMAL), 735 .driver_data = (kernel_ulong_t)&rapl_mmio_hsw, }, 736 { 0, }, 737 }; 738 739 MODULE_DEVICE_TABLE(pci, proc_thermal_pci_ids); 740 741 static struct pci_driver proc_thermal_pci_driver = { 742 .name = DRV_NAME, 743 .probe = proc_thermal_pci_probe, 744 .remove = proc_thermal_pci_remove, 745 .id_table = proc_thermal_pci_ids, 746 .driver.pm = &proc_thermal_pm, 747 }; 748 749 static const struct acpi_device_id int3401_device_ids[] = { 750 {"INT3401", 0}, 751 {"", 0}, 752 }; 753 MODULE_DEVICE_TABLE(acpi, int3401_device_ids); 754 755 static struct platform_driver int3401_driver = { 756 .probe = int3401_add, 757 .remove = int3401_remove, 758 .driver = { 759 .name = "int3401 thermal", 760 .acpi_match_table = int3401_device_ids, 761 .pm = &proc_thermal_pm, 762 }, 763 }; 764 765 static int __init proc_thermal_init(void) 766 { 767 int ret; 768 769 ret = platform_driver_register(&int3401_driver); 770 if (ret) 771 return ret; 772 773 ret = pci_register_driver(&proc_thermal_pci_driver); 774 775 return ret; 776 } 777 778 static void __exit proc_thermal_exit(void) 779 { 780 platform_driver_unregister(&int3401_driver); 781 pci_unregister_driver(&proc_thermal_pci_driver); 782 } 783 784 module_init(proc_thermal_init); 785 module_exit(proc_thermal_exit); 786 787 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); 788 MODULE_DESCRIPTION("Processor Thermal Reporting Device Driver"); 789 MODULE_LICENSE("GPL v2"); 790