diff options
Diffstat (limited to 'drivers/thermal/int340x_thermal/processor_thermal_device.c')
| -rw-r--r-- | drivers/thermal/int340x_thermal/processor_thermal_device.c | 515 |
1 files changed, 0 insertions, 515 deletions
diff --git a/drivers/thermal/int340x_thermal/processor_thermal_device.c b/drivers/thermal/int340x_thermal/processor_thermal_device.c deleted file mode 100644 index ff3b36f339e3..000000000000 --- a/drivers/thermal/int340x_thermal/processor_thermal_device.c +++ /dev/null @@ -1,515 +0,0 @@ -/* - * processor_thermal_device.c - * Copyright (c) 2014, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - */ -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/pci.h> -#include <linux/interrupt.h> -#include <linux/platform_device.h> -#include <linux/acpi.h> -#include <linux/thermal.h> -#include "int340x_thermal_zone.h" -#include "../intel_soc_dts_iosf.h" - -/* Broadwell-U/HSB thermal reporting device */ -#define PCI_DEVICE_ID_PROC_BDW_THERMAL 0x1603 -#define PCI_DEVICE_ID_PROC_HSB_THERMAL 0x0A03 - -/* Skylake thermal reporting device */ -#define PCI_DEVICE_ID_PROC_SKL_THERMAL 0x1903 - -/* Braswell thermal reporting device */ -#define PCI_DEVICE_ID_PROC_BSW_THERMAL 0x22DC - -/* Broxton thermal reporting device */ -#define PCI_DEVICE_ID_PROC_BXT0_THERMAL 0x0A8C -#define PCI_DEVICE_ID_PROC_BXT1_THERMAL 0x1A8C -#define PCI_DEVICE_ID_PROC_BXTX_THERMAL 0x4A8C -#define PCI_DEVICE_ID_PROC_BXTP_THERMAL 0x5A8C - -struct power_config { - u32 index; - u32 min_uw; - u32 max_uw; - u32 tmin_us; - u32 tmax_us; - u32 step_uw; -}; - -struct proc_thermal_device { - struct device *dev; - struct acpi_device *adev; - struct power_config power_limits[2]; - struct int34x_thermal_zone *int340x_zone; - struct intel_soc_dts_sensors *soc_dts; -}; - -enum proc_thermal_emum_mode_type { - PROC_THERMAL_NONE, - PROC_THERMAL_PCI, - PROC_THERMAL_PLATFORM_DEV -}; - -/* - * We can have only one type of enumeration, PCI or Platform, - * not both. So we don't need instance specific data. - */ -static enum proc_thermal_emum_mode_type proc_thermal_emum_mode = - PROC_THERMAL_NONE; - -#define POWER_LIMIT_SHOW(index, suffix) \ -static ssize_t power_limit_##index##_##suffix##_show(struct device *dev, \ - struct device_attribute *attr, \ - char *buf) \ -{ \ - struct pci_dev *pci_dev; \ - struct platform_device *pdev; \ - struct proc_thermal_device *proc_dev; \ -\ - if (proc_thermal_emum_mode == PROC_THERMAL_PLATFORM_DEV) { \ - pdev = to_platform_device(dev); \ - proc_dev = platform_get_drvdata(pdev); \ - } else { \ - pci_dev = to_pci_dev(dev); \ - proc_dev = pci_get_drvdata(pci_dev); \ - } \ - return sprintf(buf, "%lu\n",\ - (unsigned long)proc_dev->power_limits[index].suffix * 1000); \ -} - -POWER_LIMIT_SHOW(0, min_uw) -POWER_LIMIT_SHOW(0, max_uw) -POWER_LIMIT_SHOW(0, step_uw) -POWER_LIMIT_SHOW(0, tmin_us) -POWER_LIMIT_SHOW(0, tmax_us) - -POWER_LIMIT_SHOW(1, min_uw) -POWER_LIMIT_SHOW(1, max_uw) -POWER_LIMIT_SHOW(1, step_uw) -POWER_LIMIT_SHOW(1, tmin_us) -POWER_LIMIT_SHOW(1, tmax_us) - -static DEVICE_ATTR_RO(power_limit_0_min_uw); -static DEVICE_ATTR_RO(power_limit_0_max_uw); -static DEVICE_ATTR_RO(power_limit_0_step_uw); -static DEVICE_ATTR_RO(power_limit_0_tmin_us); -static DEVICE_ATTR_RO(power_limit_0_tmax_us); - -static DEVICE_ATTR_RO(power_limit_1_min_uw); -static DEVICE_ATTR_RO(power_limit_1_max_uw); -static DEVICE_ATTR_RO(power_limit_1_step_uw); -static DEVICE_ATTR_RO(power_limit_1_tmin_us); -static DEVICE_ATTR_RO(power_limit_1_tmax_us); - -static struct attribute *power_limit_attrs[] = { - &dev_attr_power_limit_0_min_uw.attr, - &dev_attr_power_limit_1_min_uw.attr, - &dev_attr_power_limit_0_max_uw.attr, - &dev_attr_power_limit_1_max_uw.attr, - &dev_attr_power_limit_0_step_uw.attr, - &dev_attr_power_limit_1_step_uw.attr, - &dev_attr_power_limit_0_tmin_us.attr, - &dev_attr_power_limit_1_tmin_us.attr, - &dev_attr_power_limit_0_tmax_us.attr, - &dev_attr_power_limit_1_tmax_us.attr, - NULL -}; - -static struct attribute_group power_limit_attribute_group = { - .attrs = power_limit_attrs, - .name = "power_limits" -}; - -static int stored_tjmax; /* since it is fixed, we can have local storage */ - -static int get_tjmax(void) -{ - u32 eax, edx; - u32 val; - int err; - - err = rdmsr_safe(MSR_IA32_TEMPERATURE_TARGET, &eax, &edx); - if (err) - return err; - - val = (eax >> 16) & 0xff; - if (val) - return val; - - return -EINVAL; -} - -static int read_temp_msr(int *temp) -{ - int cpu; - u32 eax, edx; - int err; - unsigned long curr_temp_off = 0; - - *temp = 0; - - for_each_online_cpu(cpu) { - err = rdmsr_safe_on_cpu(cpu, MSR_IA32_THERM_STATUS, &eax, - &edx); - if (err) - goto err_ret; - else { - if (eax & 0x80000000) { - curr_temp_off = (eax >> 16) & 0x7f; - if (!*temp || curr_temp_off < *temp) - *temp = curr_temp_off; - } else { - err = -EINVAL; - goto err_ret; - } - } - } - - return 0; -err_ret: - return err; -} - -static int proc_thermal_get_zone_temp(struct thermal_zone_device *zone, - int *temp) -{ - int ret; - - ret = read_temp_msr(temp); - if (!ret) - *temp = (stored_tjmax - *temp) * 1000; - - return ret; -} - -static struct thermal_zone_device_ops proc_thermal_local_ops = { - .get_temp = proc_thermal_get_zone_temp, -}; - -static int proc_thermal_read_ppcc(struct proc_thermal_device *proc_priv) -{ - int i; - acpi_status status; - struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL }; - union acpi_object *elements, *ppcc; - union acpi_object *p; - int ret = 0; - - status = acpi_evaluate_object(proc_priv->adev->handle, "PPCC", - NULL, &buf); - if (ACPI_FAILURE(status)) - return -ENODEV; - - p = buf.pointer; - if (!p || (p->type != ACPI_TYPE_PACKAGE)) { - dev_err(proc_priv->dev, "Invalid PPCC data\n"); - ret = -EFAULT; - goto free_buffer; - } - - if (!p->package.count) { - dev_err(proc_priv->dev, "Invalid PPCC package size\n"); - ret = -EFAULT; - goto free_buffer; - } - - for (i = 0; i < min((int)p->package.count - 1, 2); ++i) { - elements = &(p->package.elements[i+1]); - if (elements->type != ACPI_TYPE_PACKAGE || - elements->package.count != 6) { - ret = -EFAULT; - goto free_buffer; - } - ppcc = elements->package.elements; - proc_priv->power_limits[i].index = ppcc[0].integer.value; - proc_priv->power_limits[i].min_uw = ppcc[1].integer.value; - proc_priv->power_limits[i].max_uw = ppcc[2].integer.value; - proc_priv->power_limits[i].tmin_us = ppcc[3].integer.value; - proc_priv->power_limits[i].tmax_us = ppcc[4].integer.value; - proc_priv->power_limits[i].step_uw = ppcc[5].integer.value; - } - -free_buffer: - kfree(buf.pointer); - - return ret; -} - -#define PROC_POWER_CAPABILITY_CHANGED 0x83 -static void proc_thermal_notify(acpi_handle handle, u32 event, void *data) -{ - struct proc_thermal_device *proc_priv = data; - - if (!proc_priv) - return; - - switch (event) { - case PROC_POWER_CAPABILITY_CHANGED: - proc_thermal_read_ppcc(proc_priv); - int340x_thermal_zone_device_update(proc_priv->int340x_zone, - THERMAL_DEVICE_POWER_CAPABILITY_CHANGED); - break; - default: - dev_err(proc_priv->dev, "Unsupported event [0x%x]\n", event); - break; - } -} - - -static int proc_thermal_add(struct device *dev, - struct proc_thermal_device **priv) -{ - struct proc_thermal_device *proc_priv; - struct acpi_device *adev; - acpi_status status; - unsigned long long tmp; - struct thermal_zone_device_ops *ops = NULL; - int ret; - - adev = ACPI_COMPANION(dev); - if (!adev) - return -ENODEV; - - proc_priv = devm_kzalloc(dev, sizeof(*proc_priv), GFP_KERNEL); - if (!proc_priv) - return -ENOMEM; - - proc_priv->dev = dev; - proc_priv->adev = adev; - *priv = proc_priv; - - ret = proc_thermal_read_ppcc(proc_priv); - if (!ret) { - ret = sysfs_create_group(&dev->kobj, - &power_limit_attribute_group); - - } - if (ret) - return ret; - - status = acpi_evaluate_integer(adev->handle, "_TMP", NULL, &tmp); - if (ACPI_FAILURE(status)) { - /* there is no _TMP method, add local method */ - stored_tjmax = get_tjmax(); - if (stored_tjmax > 0) - ops = &proc_thermal_local_ops; - } - - proc_priv->int340x_zone = int340x_thermal_zone_add(adev, ops); - if (IS_ERR(proc_priv->int340x_zone)) { - ret = PTR_ERR(proc_priv->int340x_zone); - goto remove_group; - } else - ret = 0; - - ret = acpi_install_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY, - proc_thermal_notify, - (void *)proc_priv); - if (ret) - goto remove_zone; - - return 0; - -remove_zone: - int340x_thermal_zone_remove(proc_priv->int340x_zone); -remove_group: - sysfs_remove_group(&proc_priv->dev->kobj, - &power_limit_attribute_group); - - return ret; -} - -static void proc_thermal_remove(struct proc_thermal_device *proc_priv) -{ - acpi_remove_notify_handler(proc_priv->adev->handle, - ACPI_DEVICE_NOTIFY, proc_thermal_notify); - int340x_thermal_zone_remove(proc_priv->int340x_zone); - sysfs_remove_group(&proc_priv->dev->kobj, - &power_limit_attribute_group); -} - -static int int3401_add(struct platform_device *pdev) -{ - struct proc_thermal_device *proc_priv; - int ret; - - if (proc_thermal_emum_mode == PROC_THERMAL_PCI) { - dev_err(&pdev->dev, "error: enumerated as PCI dev\n"); - return -ENODEV; - } - - ret = proc_thermal_add(&pdev->dev, &proc_priv); - if (ret) - return ret; - - platform_set_drvdata(pdev, proc_priv); - proc_thermal_emum_mode = PROC_THERMAL_PLATFORM_DEV; - - return 0; -} - -static int int3401_remove(struct platform_device *pdev) -{ - proc_thermal_remove(platform_get_drvdata(pdev)); - - return 0; -} - -static irqreturn_t proc_thermal_pci_msi_irq(int irq, void *devid) -{ - struct proc_thermal_device *proc_priv; - struct pci_dev *pdev = devid; - - proc_priv = pci_get_drvdata(pdev); - - intel_soc_dts_iosf_interrupt_handler(proc_priv->soc_dts); - - return IRQ_HANDLED; -} - -static int proc_thermal_pci_probe(struct pci_dev *pdev, - const struct pci_device_id *unused) -{ - struct proc_thermal_device *proc_priv; - int ret; - - if (proc_thermal_emum_mode == PROC_THERMAL_PLATFORM_DEV) { - dev_err(&pdev->dev, "error: enumerated as platform dev\n"); - return -ENODEV; - } - - ret = pci_enable_device(pdev); - if (ret < 0) { - dev_err(&pdev->dev, "error: could not enable device\n"); - return ret; - } - - ret = proc_thermal_add(&pdev->dev, &proc_priv); - if (ret) { - pci_disable_device(pdev); - return ret; - } - - pci_set_drvdata(pdev, proc_priv); - proc_thermal_emum_mode = PROC_THERMAL_PCI; - - if (pdev->device == PCI_DEVICE_ID_PROC_BSW_THERMAL) { - /* - * Enumerate additional DTS sensors available via IOSF. - * But we are not treating as a failure condition, if - * there are no aux DTSs enabled or fails. This driver - * already exposes sensors, which can be accessed via - * ACPI/MSR. So we don't want to fail for auxiliary DTSs. - */ - proc_priv->soc_dts = intel_soc_dts_iosf_init( - INTEL_SOC_DTS_INTERRUPT_MSI, 2, 0); - - if (proc_priv->soc_dts && pdev->irq) { - ret = pci_enable_msi(pdev); - if (!ret) { - ret = request_threaded_irq(pdev->irq, NULL, - proc_thermal_pci_msi_irq, - IRQF_ONESHOT, "proc_thermal", - pdev); - if (ret) { - intel_soc_dts_iosf_exit( - proc_priv->soc_dts); - pci_disable_msi(pdev); - proc_priv->soc_dts = NULL; - } - } - } else - dev_err(&pdev->dev, "No auxiliary DTSs enabled\n"); - } - - return 0; -} - -static void proc_thermal_pci_remove(struct pci_dev *pdev) -{ - struct proc_thermal_device *proc_priv = pci_get_drvdata(pdev); - - if (proc_priv->soc_dts) { - intel_soc_dts_iosf_exit(proc_priv->soc_dts); - if (pdev->irq) { - free_irq(pdev->irq, pdev); - pci_disable_msi(pdev); - } - } - proc_thermal_remove(proc_priv); - pci_disable_device(pdev); -} - -static const struct pci_device_id proc_thermal_pci_ids[] = { - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BDW_THERMAL)}, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_HSB_THERMAL)}, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_SKL_THERMAL)}, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BSW_THERMAL)}, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXT0_THERMAL)}, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXT1_THERMAL)}, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXTX_THERMAL)}, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXTP_THERMAL)}, - { 0, }, -}; - -MODULE_DEVICE_TABLE(pci, proc_thermal_pci_ids); - -static struct pci_driver proc_thermal_pci_driver = { - .name = "proc_thermal", - .probe = proc_thermal_pci_probe, - .remove = proc_thermal_pci_remove, - .id_table = proc_thermal_pci_ids, -}; - -static const struct acpi_device_id int3401_device_ids[] = { - {"INT3401", 0}, - {"", 0}, -}; -MODULE_DEVICE_TABLE(acpi, int3401_device_ids); - -static struct platform_driver int3401_driver = { - .probe = int3401_add, - .remove = int3401_remove, - .driver = { - .name = "int3401 thermal", - .acpi_match_table = int3401_device_ids, - }, -}; - -static int __init proc_thermal_init(void) -{ - int ret; - - ret = platform_driver_register(&int3401_driver); - if (ret) - return ret; - - ret = pci_register_driver(&proc_thermal_pci_driver); - - return ret; -} - -static void __exit proc_thermal_exit(void) -{ - platform_driver_unregister(&int3401_driver); - pci_unregister_driver(&proc_thermal_pci_driver); -} - -module_init(proc_thermal_init); -module_exit(proc_thermal_exit); - -MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); -MODULE_DESCRIPTION("Processor Thermal Reporting Device Driver"); -MODULE_LICENSE("GPL v2"); |