Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 1 | /* |
| 2 | * processor_thermal_device.c |
| 3 | * Copyright (c) 2014, Intel Corporation. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms and conditions of the GNU General Public License, |
| 7 | * version 2, as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | */ |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/module.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/pci.h> |
Srinivas Pandruvada | 4d0dd6c | 2015-03-02 13:13:00 -0800 | [diff] [blame] | 19 | #include <linux/interrupt.h> |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 20 | #include <linux/platform_device.h> |
| 21 | #include <linux/acpi.h> |
Srinivas Pandruvada | 1c55be0 | 2015-01-16 15:59:06 -0800 | [diff] [blame] | 22 | #include <linux/thermal.h> |
| 23 | #include "int340x_thermal_zone.h" |
Srinivas Pandruvada | 4d0dd6c | 2015-03-02 13:13:00 -0800 | [diff] [blame] | 24 | #include "../intel_soc_dts_iosf.h" |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 25 | |
| 26 | /* Broadwell-U/HSB thermal reporting device */ |
| 27 | #define PCI_DEVICE_ID_PROC_BDW_THERMAL 0x1603 |
| 28 | #define PCI_DEVICE_ID_PROC_HSB_THERMAL 0x0A03 |
| 29 | |
Brian Bian | 383b4d6 | 2015-04-20 11:25:37 -0700 | [diff] [blame] | 30 | /* Skylake thermal reporting device */ |
| 31 | #define PCI_DEVICE_ID_PROC_SKL_THERMAL 0x1903 |
| 32 | |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 33 | /* Braswell thermal reporting device */ |
| 34 | #define PCI_DEVICE_ID_PROC_BSW_THERMAL 0x22DC |
| 35 | |
Amy Wiles | 20bbfaf | 2015-10-14 08:09:14 -0700 | [diff] [blame] | 36 | /* Broxton thermal reporting device */ |
| 37 | #define PCI_DEVICE_ID_PROC_BXT0_THERMAL 0x0A8C |
| 38 | #define PCI_DEVICE_ID_PROC_BXT1_THERMAL 0x1A8C |
| 39 | #define PCI_DEVICE_ID_PROC_BXTX_THERMAL 0x4A8C |
| 40 | #define PCI_DEVICE_ID_PROC_BXTP_THERMAL 0x5A8C |
| 41 | |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 42 | struct power_config { |
| 43 | u32 index; |
| 44 | u32 min_uw; |
| 45 | u32 max_uw; |
| 46 | u32 tmin_us; |
| 47 | u32 tmax_us; |
| 48 | u32 step_uw; |
| 49 | }; |
| 50 | |
| 51 | struct proc_thermal_device { |
| 52 | struct device *dev; |
| 53 | struct acpi_device *adev; |
| 54 | struct power_config power_limits[2]; |
Srinivas Pandruvada | 1c55be0 | 2015-01-16 15:59:06 -0800 | [diff] [blame] | 55 | struct int34x_thermal_zone *int340x_zone; |
Srinivas Pandruvada | 4d0dd6c | 2015-03-02 13:13:00 -0800 | [diff] [blame] | 56 | struct intel_soc_dts_sensors *soc_dts; |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 57 | }; |
| 58 | |
| 59 | enum proc_thermal_emum_mode_type { |
| 60 | PROC_THERMAL_NONE, |
| 61 | PROC_THERMAL_PCI, |
| 62 | PROC_THERMAL_PLATFORM_DEV |
| 63 | }; |
| 64 | |
| 65 | /* |
| 66 | * We can have only one type of enumeration, PCI or Platform, |
| 67 | * not both. So we don't need instance specific data. |
| 68 | */ |
| 69 | static enum proc_thermal_emum_mode_type proc_thermal_emum_mode = |
| 70 | PROC_THERMAL_NONE; |
| 71 | |
| 72 | #define POWER_LIMIT_SHOW(index, suffix) \ |
| 73 | static ssize_t power_limit_##index##_##suffix##_show(struct device *dev, \ |
| 74 | struct device_attribute *attr, \ |
| 75 | char *buf) \ |
| 76 | { \ |
| 77 | struct pci_dev *pci_dev; \ |
| 78 | struct platform_device *pdev; \ |
| 79 | struct proc_thermal_device *proc_dev; \ |
Aaron Hill | 311acb0 | 2018-12-24 14:23:36 -0500 | [diff] [blame] | 80 | \ |
| 81 | if (proc_thermal_emum_mode == PROC_THERMAL_NONE) { \ |
| 82 | dev_warn(dev, "Attempted to get power limit before device was initialized!\n"); \ |
| 83 | return 0; \ |
| 84 | } \ |
| 85 | \ |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 86 | if (proc_thermal_emum_mode == PROC_THERMAL_PLATFORM_DEV) { \ |
| 87 | pdev = to_platform_device(dev); \ |
| 88 | proc_dev = platform_get_drvdata(pdev); \ |
| 89 | } else { \ |
| 90 | pci_dev = to_pci_dev(dev); \ |
| 91 | proc_dev = pci_get_drvdata(pci_dev); \ |
| 92 | } \ |
| 93 | return sprintf(buf, "%lu\n",\ |
| 94 | (unsigned long)proc_dev->power_limits[index].suffix * 1000); \ |
| 95 | } |
| 96 | |
| 97 | POWER_LIMIT_SHOW(0, min_uw) |
| 98 | POWER_LIMIT_SHOW(0, max_uw) |
| 99 | POWER_LIMIT_SHOW(0, step_uw) |
| 100 | POWER_LIMIT_SHOW(0, tmin_us) |
| 101 | POWER_LIMIT_SHOW(0, tmax_us) |
| 102 | |
| 103 | POWER_LIMIT_SHOW(1, min_uw) |
| 104 | POWER_LIMIT_SHOW(1, max_uw) |
| 105 | POWER_LIMIT_SHOW(1, step_uw) |
| 106 | POWER_LIMIT_SHOW(1, tmin_us) |
| 107 | POWER_LIMIT_SHOW(1, tmax_us) |
| 108 | |
| 109 | static DEVICE_ATTR_RO(power_limit_0_min_uw); |
| 110 | static DEVICE_ATTR_RO(power_limit_0_max_uw); |
| 111 | static DEVICE_ATTR_RO(power_limit_0_step_uw); |
| 112 | static DEVICE_ATTR_RO(power_limit_0_tmin_us); |
| 113 | static DEVICE_ATTR_RO(power_limit_0_tmax_us); |
| 114 | |
| 115 | static DEVICE_ATTR_RO(power_limit_1_min_uw); |
| 116 | static DEVICE_ATTR_RO(power_limit_1_max_uw); |
| 117 | static DEVICE_ATTR_RO(power_limit_1_step_uw); |
| 118 | static DEVICE_ATTR_RO(power_limit_1_tmin_us); |
| 119 | static DEVICE_ATTR_RO(power_limit_1_tmax_us); |
| 120 | |
| 121 | static struct attribute *power_limit_attrs[] = { |
| 122 | &dev_attr_power_limit_0_min_uw.attr, |
| 123 | &dev_attr_power_limit_1_min_uw.attr, |
| 124 | &dev_attr_power_limit_0_max_uw.attr, |
| 125 | &dev_attr_power_limit_1_max_uw.attr, |
| 126 | &dev_attr_power_limit_0_step_uw.attr, |
| 127 | &dev_attr_power_limit_1_step_uw.attr, |
| 128 | &dev_attr_power_limit_0_tmin_us.attr, |
| 129 | &dev_attr_power_limit_1_tmin_us.attr, |
| 130 | &dev_attr_power_limit_0_tmax_us.attr, |
| 131 | &dev_attr_power_limit_1_tmax_us.attr, |
| 132 | NULL |
| 133 | }; |
| 134 | |
| 135 | static struct attribute_group power_limit_attribute_group = { |
| 136 | .attrs = power_limit_attrs, |
| 137 | .name = "power_limits" |
| 138 | }; |
| 139 | |
Srinivas Pandruvada | 1c55be0 | 2015-01-16 15:59:06 -0800 | [diff] [blame] | 140 | static int stored_tjmax; /* since it is fixed, we can have local storage */ |
| 141 | |
| 142 | static int get_tjmax(void) |
| 143 | { |
| 144 | u32 eax, edx; |
| 145 | u32 val; |
| 146 | int err; |
| 147 | |
| 148 | err = rdmsr_safe(MSR_IA32_TEMPERATURE_TARGET, &eax, &edx); |
| 149 | if (err) |
| 150 | return err; |
| 151 | |
| 152 | val = (eax >> 16) & 0xff; |
| 153 | if (val) |
| 154 | return val; |
| 155 | |
| 156 | return -EINVAL; |
| 157 | } |
| 158 | |
Sascha Hauer | 17e8351 | 2015-07-24 08:12:54 +0200 | [diff] [blame] | 159 | static int read_temp_msr(int *temp) |
Srinivas Pandruvada | 1c55be0 | 2015-01-16 15:59:06 -0800 | [diff] [blame] | 160 | { |
| 161 | int cpu; |
| 162 | u32 eax, edx; |
| 163 | int err; |
| 164 | unsigned long curr_temp_off = 0; |
| 165 | |
| 166 | *temp = 0; |
| 167 | |
| 168 | for_each_online_cpu(cpu) { |
| 169 | err = rdmsr_safe_on_cpu(cpu, MSR_IA32_THERM_STATUS, &eax, |
| 170 | &edx); |
| 171 | if (err) |
| 172 | goto err_ret; |
| 173 | else { |
| 174 | if (eax & 0x80000000) { |
| 175 | curr_temp_off = (eax >> 16) & 0x7f; |
| 176 | if (!*temp || curr_temp_off < *temp) |
| 177 | *temp = curr_temp_off; |
| 178 | } else { |
| 179 | err = -EINVAL; |
| 180 | goto err_ret; |
| 181 | } |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | return 0; |
| 186 | err_ret: |
| 187 | return err; |
| 188 | } |
| 189 | |
| 190 | static int proc_thermal_get_zone_temp(struct thermal_zone_device *zone, |
Sascha Hauer | 17e8351 | 2015-07-24 08:12:54 +0200 | [diff] [blame] | 191 | int *temp) |
Srinivas Pandruvada | 1c55be0 | 2015-01-16 15:59:06 -0800 | [diff] [blame] | 192 | { |
| 193 | int ret; |
| 194 | |
| 195 | ret = read_temp_msr(temp); |
| 196 | if (!ret) |
| 197 | *temp = (stored_tjmax - *temp) * 1000; |
| 198 | |
| 199 | return ret; |
| 200 | } |
| 201 | |
| 202 | static struct thermal_zone_device_ops proc_thermal_local_ops = { |
| 203 | .get_temp = proc_thermal_get_zone_temp, |
| 204 | }; |
| 205 | |
Srinivas Pandruvada | f1ba9eb | 2016-04-05 14:52:57 -0700 | [diff] [blame] | 206 | static int proc_thermal_read_ppcc(struct proc_thermal_device *proc_priv) |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 207 | { |
Srinivas Pandruvada | f1ba9eb | 2016-04-05 14:52:57 -0700 | [diff] [blame] | 208 | int i; |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 209 | acpi_status status; |
| 210 | struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 211 | union acpi_object *elements, *ppcc; |
| 212 | union acpi_object *p; |
Srinivas Pandruvada | f1ba9eb | 2016-04-05 14:52:57 -0700 | [diff] [blame] | 213 | int ret = 0; |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 214 | |
Srinivas Pandruvada | f1ba9eb | 2016-04-05 14:52:57 -0700 | [diff] [blame] | 215 | status = acpi_evaluate_object(proc_priv->adev->handle, "PPCC", |
| 216 | NULL, &buf); |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 217 | if (ACPI_FAILURE(status)) |
| 218 | return -ENODEV; |
| 219 | |
| 220 | p = buf.pointer; |
| 221 | if (!p || (p->type != ACPI_TYPE_PACKAGE)) { |
Srinivas Pandruvada | f1ba9eb | 2016-04-05 14:52:57 -0700 | [diff] [blame] | 222 | dev_err(proc_priv->dev, "Invalid PPCC data\n"); |
Srinivas Pandruvada | cc3f71a | 2014-12-23 15:23:35 -0800 | [diff] [blame] | 223 | ret = -EFAULT; |
| 224 | goto free_buffer; |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 225 | } |
Srinivas Pandruvada | f1ba9eb | 2016-04-05 14:52:57 -0700 | [diff] [blame] | 226 | |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 227 | if (!p->package.count) { |
Srinivas Pandruvada | f1ba9eb | 2016-04-05 14:52:57 -0700 | [diff] [blame] | 228 | dev_err(proc_priv->dev, "Invalid PPCC package size\n"); |
Srinivas Pandruvada | cc3f71a | 2014-12-23 15:23:35 -0800 | [diff] [blame] | 229 | ret = -EFAULT; |
| 230 | goto free_buffer; |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 231 | } |
| 232 | |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 233 | for (i = 0; i < min((int)p->package.count - 1, 2); ++i) { |
| 234 | elements = &(p->package.elements[i+1]); |
| 235 | if (elements->type != ACPI_TYPE_PACKAGE || |
Srinivas Pandruvada | cc3f71a | 2014-12-23 15:23:35 -0800 | [diff] [blame] | 236 | elements->package.count != 6) { |
| 237 | ret = -EFAULT; |
| 238 | goto free_buffer; |
| 239 | } |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 240 | ppcc = elements->package.elements; |
| 241 | proc_priv->power_limits[i].index = ppcc[0].integer.value; |
| 242 | proc_priv->power_limits[i].min_uw = ppcc[1].integer.value; |
| 243 | proc_priv->power_limits[i].max_uw = ppcc[2].integer.value; |
| 244 | proc_priv->power_limits[i].tmin_us = ppcc[3].integer.value; |
| 245 | proc_priv->power_limits[i].tmax_us = ppcc[4].integer.value; |
| 246 | proc_priv->power_limits[i].step_uw = ppcc[5].integer.value; |
| 247 | } |
| 248 | |
Srinivas Pandruvada | f1ba9eb | 2016-04-05 14:52:57 -0700 | [diff] [blame] | 249 | free_buffer: |
| 250 | kfree(buf.pointer); |
| 251 | |
| 252 | return ret; |
| 253 | } |
| 254 | |
| 255 | #define PROC_POWER_CAPABILITY_CHANGED 0x83 |
| 256 | static void proc_thermal_notify(acpi_handle handle, u32 event, void *data) |
| 257 | { |
| 258 | struct proc_thermal_device *proc_priv = data; |
| 259 | |
| 260 | if (!proc_priv) |
| 261 | return; |
| 262 | |
| 263 | switch (event) { |
| 264 | case PROC_POWER_CAPABILITY_CHANGED: |
| 265 | proc_thermal_read_ppcc(proc_priv); |
Srinivas Pandruvada | 9176ae8 | 2016-08-26 16:21:18 -0700 | [diff] [blame] | 266 | int340x_thermal_zone_device_update(proc_priv->int340x_zone, |
| 267 | THERMAL_DEVICE_POWER_CAPABILITY_CHANGED); |
Srinivas Pandruvada | f1ba9eb | 2016-04-05 14:52:57 -0700 | [diff] [blame] | 268 | break; |
| 269 | default: |
| 270 | dev_err(proc_priv->dev, "Unsupported event [0x%x]\n", event); |
| 271 | break; |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | |
| 276 | static int proc_thermal_add(struct device *dev, |
| 277 | struct proc_thermal_device **priv) |
| 278 | { |
| 279 | struct proc_thermal_device *proc_priv; |
| 280 | struct acpi_device *adev; |
| 281 | acpi_status status; |
| 282 | unsigned long long tmp; |
| 283 | struct thermal_zone_device_ops *ops = NULL; |
| 284 | int ret; |
| 285 | |
| 286 | adev = ACPI_COMPANION(dev); |
| 287 | if (!adev) |
| 288 | return -ENODEV; |
| 289 | |
| 290 | proc_priv = devm_kzalloc(dev, sizeof(*proc_priv), GFP_KERNEL); |
| 291 | if (!proc_priv) |
| 292 | return -ENOMEM; |
| 293 | |
| 294 | proc_priv->dev = dev; |
| 295 | proc_priv->adev = adev; |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 296 | *priv = proc_priv; |
| 297 | |
Srinivas Pandruvada | f1ba9eb | 2016-04-05 14:52:57 -0700 | [diff] [blame] | 298 | ret = proc_thermal_read_ppcc(proc_priv); |
Srinivas Pandruvada | 1c55be0 | 2015-01-16 15:59:06 -0800 | [diff] [blame] | 299 | if (ret) |
Srinivas Pandruvada | f1ba9eb | 2016-04-05 14:52:57 -0700 | [diff] [blame] | 300 | return ret; |
Srinivas Pandruvada | 1c55be0 | 2015-01-16 15:59:06 -0800 | [diff] [blame] | 301 | |
| 302 | status = acpi_evaluate_integer(adev->handle, "_TMP", NULL, &tmp); |
| 303 | if (ACPI_FAILURE(status)) { |
| 304 | /* there is no _TMP method, add local method */ |
| 305 | stored_tjmax = get_tjmax(); |
| 306 | if (stored_tjmax > 0) |
| 307 | ops = &proc_thermal_local_ops; |
| 308 | } |
| 309 | |
| 310 | proc_priv->int340x_zone = int340x_thermal_zone_add(adev, ops); |
| 311 | if (IS_ERR(proc_priv->int340x_zone)) { |
Aaron Hill | 311acb0 | 2018-12-24 14:23:36 -0500 | [diff] [blame] | 312 | return PTR_ERR(proc_priv->int340x_zone); |
Srinivas Pandruvada | 1c55be0 | 2015-01-16 15:59:06 -0800 | [diff] [blame] | 313 | } else |
| 314 | ret = 0; |
Srinivas Pandruvada | cc3f71a | 2014-12-23 15:23:35 -0800 | [diff] [blame] | 315 | |
Srinivas Pandruvada | f1ba9eb | 2016-04-05 14:52:57 -0700 | [diff] [blame] | 316 | ret = acpi_install_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY, |
| 317 | proc_thermal_notify, |
| 318 | (void *)proc_priv); |
| 319 | if (ret) |
| 320 | goto remove_zone; |
| 321 | |
| 322 | return 0; |
| 323 | |
| 324 | remove_zone: |
| 325 | int340x_thermal_zone_remove(proc_priv->int340x_zone); |
Srinivas Pandruvada | cc3f71a | 2014-12-23 15:23:35 -0800 | [diff] [blame] | 326 | |
| 327 | return ret; |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 328 | } |
| 329 | |
Lad, Prabhakar | 4aa971b | 2015-02-05 13:43:37 +0000 | [diff] [blame] | 330 | static void proc_thermal_remove(struct proc_thermal_device *proc_priv) |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 331 | { |
Srinivas Pandruvada | f1ba9eb | 2016-04-05 14:52:57 -0700 | [diff] [blame] | 332 | acpi_remove_notify_handler(proc_priv->adev->handle, |
| 333 | ACPI_DEVICE_NOTIFY, proc_thermal_notify); |
Srinivas Pandruvada | 1c55be0 | 2015-01-16 15:59:06 -0800 | [diff] [blame] | 334 | int340x_thermal_zone_remove(proc_priv->int340x_zone); |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 335 | sysfs_remove_group(&proc_priv->dev->kobj, |
| 336 | &power_limit_attribute_group); |
| 337 | } |
| 338 | |
| 339 | static int int3401_add(struct platform_device *pdev) |
| 340 | { |
| 341 | struct proc_thermal_device *proc_priv; |
| 342 | int ret; |
| 343 | |
| 344 | if (proc_thermal_emum_mode == PROC_THERMAL_PCI) { |
| 345 | dev_err(&pdev->dev, "error: enumerated as PCI dev\n"); |
| 346 | return -ENODEV; |
| 347 | } |
| 348 | |
| 349 | ret = proc_thermal_add(&pdev->dev, &proc_priv); |
| 350 | if (ret) |
| 351 | return ret; |
| 352 | |
| 353 | platform_set_drvdata(pdev, proc_priv); |
| 354 | proc_thermal_emum_mode = PROC_THERMAL_PLATFORM_DEV; |
| 355 | |
Aaron Hill | 311acb0 | 2018-12-24 14:23:36 -0500 | [diff] [blame] | 356 | dev_info(&pdev->dev, "Creating sysfs group for PROC_THERMAL_PLATFORM_DEV\n"); |
| 357 | |
| 358 | return sysfs_create_group(&pdev->dev.kobj, |
| 359 | &power_limit_attribute_group); |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 360 | } |
| 361 | |
| 362 | static int int3401_remove(struct platform_device *pdev) |
| 363 | { |
| 364 | proc_thermal_remove(platform_get_drvdata(pdev)); |
| 365 | |
| 366 | return 0; |
| 367 | } |
| 368 | |
Srinivas Pandruvada | 4d0dd6c | 2015-03-02 13:13:00 -0800 | [diff] [blame] | 369 | static irqreturn_t proc_thermal_pci_msi_irq(int irq, void *devid) |
| 370 | { |
| 371 | struct proc_thermal_device *proc_priv; |
| 372 | struct pci_dev *pdev = devid; |
| 373 | |
| 374 | proc_priv = pci_get_drvdata(pdev); |
| 375 | |
| 376 | intel_soc_dts_iosf_interrupt_handler(proc_priv->soc_dts); |
| 377 | |
| 378 | return IRQ_HANDLED; |
| 379 | } |
| 380 | |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 381 | static int proc_thermal_pci_probe(struct pci_dev *pdev, |
| 382 | const struct pci_device_id *unused) |
| 383 | { |
| 384 | struct proc_thermal_device *proc_priv; |
| 385 | int ret; |
| 386 | |
| 387 | if (proc_thermal_emum_mode == PROC_THERMAL_PLATFORM_DEV) { |
| 388 | dev_err(&pdev->dev, "error: enumerated as platform dev\n"); |
| 389 | return -ENODEV; |
| 390 | } |
| 391 | |
| 392 | ret = pci_enable_device(pdev); |
| 393 | if (ret < 0) { |
| 394 | dev_err(&pdev->dev, "error: could not enable device\n"); |
| 395 | return ret; |
| 396 | } |
| 397 | |
| 398 | ret = proc_thermal_add(&pdev->dev, &proc_priv); |
| 399 | if (ret) { |
| 400 | pci_disable_device(pdev); |
| 401 | return ret; |
| 402 | } |
| 403 | |
| 404 | pci_set_drvdata(pdev, proc_priv); |
| 405 | proc_thermal_emum_mode = PROC_THERMAL_PCI; |
| 406 | |
Srinivas Pandruvada | 4d0dd6c | 2015-03-02 13:13:00 -0800 | [diff] [blame] | 407 | if (pdev->device == PCI_DEVICE_ID_PROC_BSW_THERMAL) { |
| 408 | /* |
| 409 | * Enumerate additional DTS sensors available via IOSF. |
| 410 | * But we are not treating as a failure condition, if |
| 411 | * there are no aux DTSs enabled or fails. This driver |
| 412 | * already exposes sensors, which can be accessed via |
| 413 | * ACPI/MSR. So we don't want to fail for auxiliary DTSs. |
| 414 | */ |
| 415 | proc_priv->soc_dts = intel_soc_dts_iosf_init( |
| 416 | INTEL_SOC_DTS_INTERRUPT_MSI, 2, 0); |
| 417 | |
Dan Carpenter | 26e284f | 2018-12-17 10:02:42 +0300 | [diff] [blame] | 418 | if (!IS_ERR(proc_priv->soc_dts) && pdev->irq) { |
Srinivas Pandruvada | 4d0dd6c | 2015-03-02 13:13:00 -0800 | [diff] [blame] | 419 | ret = pci_enable_msi(pdev); |
| 420 | if (!ret) { |
| 421 | ret = request_threaded_irq(pdev->irq, NULL, |
| 422 | proc_thermal_pci_msi_irq, |
| 423 | IRQF_ONESHOT, "proc_thermal", |
| 424 | pdev); |
| 425 | if (ret) { |
| 426 | intel_soc_dts_iosf_exit( |
| 427 | proc_priv->soc_dts); |
| 428 | pci_disable_msi(pdev); |
| 429 | proc_priv->soc_dts = NULL; |
| 430 | } |
| 431 | } |
| 432 | } else |
| 433 | dev_err(&pdev->dev, "No auxiliary DTSs enabled\n"); |
| 434 | } |
| 435 | |
Aaron Hill | 311acb0 | 2018-12-24 14:23:36 -0500 | [diff] [blame] | 436 | dev_info(&pdev->dev, "Creating sysfs group for PROC_THERMAL_PCI\n"); |
| 437 | |
| 438 | return sysfs_create_group(&pdev->dev.kobj, |
| 439 | &power_limit_attribute_group); |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 440 | } |
| 441 | |
| 442 | static void proc_thermal_pci_remove(struct pci_dev *pdev) |
| 443 | { |
Srinivas Pandruvada | 4d0dd6c | 2015-03-02 13:13:00 -0800 | [diff] [blame] | 444 | struct proc_thermal_device *proc_priv = pci_get_drvdata(pdev); |
| 445 | |
| 446 | if (proc_priv->soc_dts) { |
| 447 | intel_soc_dts_iosf_exit(proc_priv->soc_dts); |
| 448 | if (pdev->irq) { |
| 449 | free_irq(pdev->irq, pdev); |
| 450 | pci_disable_msi(pdev); |
| 451 | } |
| 452 | } |
| 453 | proc_thermal_remove(proc_priv); |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 454 | pci_disable_device(pdev); |
| 455 | } |
| 456 | |
| 457 | static const struct pci_device_id proc_thermal_pci_ids[] = { |
| 458 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BDW_THERMAL)}, |
| 459 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_HSB_THERMAL)}, |
Brian Bian | 383b4d6 | 2015-04-20 11:25:37 -0700 | [diff] [blame] | 460 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_SKL_THERMAL)}, |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 461 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BSW_THERMAL)}, |
Amy Wiles | 20bbfaf | 2015-10-14 08:09:14 -0700 | [diff] [blame] | 462 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXT0_THERMAL)}, |
| 463 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXT1_THERMAL)}, |
| 464 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXTX_THERMAL)}, |
| 465 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PROC_BXTP_THERMAL)}, |
Srinivas Pandruvada | 47c93e6 | 2014-12-09 16:47:17 -0800 | [diff] [blame] | 466 | { 0, }, |
| 467 | }; |
| 468 | |
| 469 | MODULE_DEVICE_TABLE(pci, proc_thermal_pci_ids); |
| 470 | |
| 471 | static struct pci_driver proc_thermal_pci_driver = { |
| 472 | .name = "proc_thermal", |
| 473 | .probe = proc_thermal_pci_probe, |
| 474 | .remove = proc_thermal_pci_remove, |
| 475 | .id_table = proc_thermal_pci_ids, |
| 476 | }; |
| 477 | |
| 478 | static const struct acpi_device_id int3401_device_ids[] = { |
| 479 | {"INT3401", 0}, |
| 480 | {"", 0}, |
| 481 | }; |
| 482 | MODULE_DEVICE_TABLE(acpi, int3401_device_ids); |
| 483 | |
| 484 | static struct platform_driver int3401_driver = { |
| 485 | .probe = int3401_add, |
| 486 | .remove = int3401_remove, |
| 487 | .driver = { |
| 488 | .name = "int3401 thermal", |
| 489 | .acpi_match_table = int3401_device_ids, |
| 490 | }, |
| 491 | }; |
| 492 | |
| 493 | static int __init proc_thermal_init(void) |
| 494 | { |
| 495 | int ret; |
| 496 | |
| 497 | ret = platform_driver_register(&int3401_driver); |
| 498 | if (ret) |
| 499 | return ret; |
| 500 | |
| 501 | ret = pci_register_driver(&proc_thermal_pci_driver); |
| 502 | |
| 503 | return ret; |
| 504 | } |
| 505 | |
| 506 | static void __exit proc_thermal_exit(void) |
| 507 | { |
| 508 | platform_driver_unregister(&int3401_driver); |
| 509 | pci_unregister_driver(&proc_thermal_pci_driver); |
| 510 | } |
| 511 | |
| 512 | module_init(proc_thermal_init); |
| 513 | module_exit(proc_thermal_exit); |
| 514 | |
| 515 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); |
| 516 | MODULE_DESCRIPTION("Processor Thermal Reporting Device Driver"); |
| 517 | MODULE_LICENSE("GPL v2"); |