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