Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Srinivas Pandruvada | 1873 | 92.04% | 19 | 63.33% |
Rui Zhang | 92 | 4.52% | 4 | 13.33% |
Antoine Tenart | 46 | 2.26% | 2 | 6.67% |
Daniel Lezcano | 15 | 0.74% | 1 | 3.33% |
Aaron Hill | 5 | 0.25% | 1 | 3.33% |
Thomas Gleixner | 2 | 0.10% | 1 | 3.33% |
Sascha Hauer | 1 | 0.05% | 1 | 3.33% |
Arvind Yadav | 1 | 0.05% | 1 | 3.33% |
Total | 2035 | 30 |
// SPDX-License-Identifier: GPL-2.0-only /* * processor_thermal_device.c * Copyright (c) 2014, Intel Corporation. */ #include <linux/acpi.h> #include <linux/intel_tcc.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/thermal.h> #include "int340x_thermal_zone.h" #include "processor_thermal_device.h" #include "../intel_soc_dts_iosf.h" #define DRV_NAME "proc_thermal" #define POWER_LIMIT_SHOW(index, suffix) \ static ssize_t power_limit_##index##_##suffix##_show(struct device *dev, \ struct device_attribute *attr, \ char *buf) \ { \ struct proc_thermal_device *proc_dev = dev_get_drvdata(dev); \ \ return sprintf(buf, "%lu\n",\ (unsigned long)proc_dev->power_limits[index].suffix * 1000); \ } static ssize_t power_floor_status_show(struct device *dev, struct device_attribute *attr, char *buf) { struct proc_thermal_device *proc_dev = dev_get_drvdata(dev); int ret; ret = proc_thermal_read_power_floor_status(proc_dev); return sysfs_emit(buf, "%d\n", ret); } static ssize_t power_floor_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { struct proc_thermal_device *proc_dev = dev_get_drvdata(dev); bool ret; ret = proc_thermal_power_floor_get_state(proc_dev); return sysfs_emit(buf, "%d\n", ret); } static ssize_t power_floor_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct proc_thermal_device *proc_dev = dev_get_drvdata(dev); u8 state; int ret; if (kstrtou8(buf, 0, &state)) return -EINVAL; ret = proc_thermal_power_floor_set_state(proc_dev, !!state); if (ret) return ret; return count; } 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 DEVICE_ATTR_RO(power_floor_status); static DEVICE_ATTR_RW(power_floor_enable); 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, &dev_attr_power_floor_status.attr, &dev_attr_power_floor_enable.attr, NULL }; static umode_t power_limit_attr_visible(struct kobject *kobj, struct attribute *attr, int unused) { struct device *dev = kobj_to_dev(kobj); struct proc_thermal_device *proc_dev; if (attr != &dev_attr_power_floor_status.attr && attr != &dev_attr_power_floor_enable.attr) return attr->mode; proc_dev = dev_get_drvdata(dev); if (!proc_dev || !(proc_dev->mmio_feature_mask & PROC_THERMAL_FEATURE_POWER_FLOOR)) return 0; return attr->mode; } static const struct attribute_group power_limit_attribute_group = { .attrs = power_limit_attrs, .name = "power_limits", .is_visible = power_limit_attr_visible, }; static ssize_t tcc_offset_degree_celsius_show(struct device *dev, struct device_attribute *attr, char *buf) { int offset; offset = intel_tcc_get_offset(-1); if (offset < 0) return offset; return sprintf(buf, "%d\n", offset); } static ssize_t tcc_offset_degree_celsius_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned int tcc; u64 val; int err; err = rdmsrl_safe(MSR_PLATFORM_INFO, &val); if (err) return err; if (!(val & BIT(30))) return -EACCES; if (kstrtouint(buf, 0, &tcc)) return -EINVAL; err = intel_tcc_set_offset(-1, tcc); if (err) return err; return count; } static DEVICE_ATTR_RW(tcc_offset_degree_celsius); static int proc_thermal_get_zone_temp(struct thermal_zone_device *zone, int *temp) { int cpu; int curr_temp, ret; *temp = 0; for_each_online_cpu(cpu) { ret = intel_tcc_get_temp(cpu, &curr_temp, false); if (ret < 0) return ret; if (!*temp || curr_temp > *temp) *temp = curr_temp; } *temp *= 1000; return 0; } 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_dbg(proc_priv->dev, "Unsupported event [0x%x]\n", event); break; } } int proc_thermal_add(struct device *dev, struct proc_thermal_device *proc_priv) { struct acpi_device *adev; acpi_status status; unsigned long long tmp; int (*get_temp) (struct thermal_zone_device *, int *) = NULL; int ret; adev = ACPI_COMPANION(dev); if (!adev) return -ENODEV; proc_priv->dev = dev; proc_priv->adev = adev; ret = proc_thermal_read_ppcc(proc_priv); 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 */ if (intel_tcc_get_tjmax(-1) > 0) get_temp = proc_thermal_get_zone_temp; } proc_priv->int340x_zone = int340x_thermal_zone_add(adev, get_temp); if (IS_ERR(proc_priv->int340x_zone)) { return PTR_ERR(proc_priv->int340x_zone); } else ret = 0; ret = acpi_install_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY, proc_thermal_notify, (void *)proc_priv); if (ret) goto remove_zone; ret = sysfs_create_file(&dev->kobj, &dev_attr_tcc_offset_degree_celsius.attr); if (ret) goto remove_notify; ret = sysfs_create_group(&dev->kobj, &power_limit_attribute_group); if (ret) { sysfs_remove_file(&dev->kobj, &dev_attr_tcc_offset_degree_celsius.attr); goto remove_notify; } return 0; remove_notify: acpi_remove_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY, proc_thermal_notify); remove_zone: int340x_thermal_zone_remove(proc_priv->int340x_zone); return ret; } EXPORT_SYMBOL_GPL(proc_thermal_add); 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_file(&proc_priv->dev->kobj, &dev_attr_tcc_offset_degree_celsius.attr); sysfs_remove_group(&proc_priv->dev->kobj, &power_limit_attribute_group); } EXPORT_SYMBOL_GPL(proc_thermal_remove); static int tcc_offset_save = -1; int proc_thermal_suspend(struct device *dev) { tcc_offset_save = intel_tcc_get_offset(-1); if (tcc_offset_save < 0) dev_warn(dev, "failed to save offset (%d)\n", tcc_offset_save); return 0; } EXPORT_SYMBOL_GPL(proc_thermal_suspend); int proc_thermal_resume(struct device *dev) { struct proc_thermal_device *proc_dev; proc_dev = dev_get_drvdata(dev); proc_thermal_read_ppcc(proc_dev); /* Do not update if saving failed */ if (tcc_offset_save >= 0) intel_tcc_set_offset(-1, tcc_offset_save); return 0; } EXPORT_SYMBOL_GPL(proc_thermal_resume); #define MCHBAR 0 static int proc_thermal_set_mmio_base(struct pci_dev *pdev, struct proc_thermal_device *proc_priv) { int ret; ret = pcim_iomap_regions(pdev, 1 << MCHBAR, DRV_NAME); if (ret) { dev_err(&pdev->dev, "cannot reserve PCI memory region\n"); return -ENOMEM; } proc_priv->mmio_base = pcim_iomap_table(pdev)[MCHBAR]; return 0; } int proc_thermal_mmio_add(struct pci_dev *pdev, struct proc_thermal_device *proc_priv, kernel_ulong_t feature_mask) { int ret; proc_priv->mmio_feature_mask = feature_mask; if (feature_mask) { ret = proc_thermal_set_mmio_base(pdev, proc_priv); if (ret) return ret; } if (feature_mask & PROC_THERMAL_FEATURE_RAPL) { ret = proc_thermal_rapl_add(pdev, proc_priv); if (ret) { dev_err(&pdev->dev, "failed to add RAPL MMIO interface\n"); return ret; } } if (feature_mask & PROC_THERMAL_FEATURE_FIVR || feature_mask & PROC_THERMAL_FEATURE_DVFS || feature_mask & PROC_THERMAL_FEATURE_DLVR) { ret = proc_thermal_rfim_add(pdev, proc_priv); if (ret) { dev_err(&pdev->dev, "failed to add RFIM interface\n"); goto err_rem_rapl; } } if (feature_mask & PROC_THERMAL_FEATURE_WT_REQ) { ret = proc_thermal_wt_req_add(pdev, proc_priv); if (ret) { dev_err(&pdev->dev, "failed to add MBOX interface\n"); goto err_rem_rfim; } } else if (feature_mask & PROC_THERMAL_FEATURE_WT_HINT) { ret = proc_thermal_wt_hint_add(pdev, proc_priv); if (ret) { dev_err(&pdev->dev, "failed to add WT Hint\n"); goto err_rem_rfim; } } return 0; err_rem_rfim: proc_thermal_rfim_remove(pdev); err_rem_rapl: proc_thermal_rapl_remove(); return ret; } EXPORT_SYMBOL_GPL(proc_thermal_mmio_add); void proc_thermal_mmio_remove(struct pci_dev *pdev, struct proc_thermal_device *proc_priv) { if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_RAPL) proc_thermal_rapl_remove(); if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_FIVR || proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_DVFS || proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_DLVR) proc_thermal_rfim_remove(pdev); if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_POWER_FLOOR) proc_thermal_power_floor_set_state(proc_priv, false); if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_WT_REQ) proc_thermal_wt_req_remove(pdev); else if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_WT_HINT) proc_thermal_wt_hint_remove(pdev); } EXPORT_SYMBOL_GPL(proc_thermal_mmio_remove); MODULE_IMPORT_NS(INTEL_TCC); MODULE_IMPORT_NS(INT340X_THERMAL); MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); MODULE_DESCRIPTION("Processor Thermal Reporting Device Driver"); MODULE_LICENSE("GPL v2");
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