drivers/misc/mei/pci-me.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2003-2022, Intel Corporation. All rights reserved.
   4  * Intel Management Engine Interface (Intel MEI) Linux driver
   5  */
   6
   7 #include <linux/module.h>
   8 #include <linux/kernel.h>
   9 #include <linux/device.h>
  10 #include <linux/errno.h>
  11 #include <linux/types.h>
  12 #include <linux/pci.h>
  13 #include <linux/dma-mapping.h>
  14 #include <linux/sched.h>
  15 #include <linux/interrupt.h>
  16
  17 #include <linux/pm_domain.h>
  18 #include <linux/pm_runtime.h>
  19
  20 #include <linux/mei.h>
  21
  22 #include "mei_dev.h"
  23 #include "client.h"
  24 #include "hw-me-regs.h"
  25 #include "hw-me.h"
  26
  27 /* mei_pci_tbl - PCI Device ID Table */
  28 static const struct pci_device_id mei_me_pci_tbl[] = {
  29         {MEI_PCI_DEVICE(MEI_DEV_ID_82946GZ, MEI_ME_ICH_CFG)},
  30         {MEI_PCI_DEVICE(MEI_DEV_ID_82G35, MEI_ME_ICH_CFG)},
  31         {MEI_PCI_DEVICE(MEI_DEV_ID_82Q965, MEI_ME_ICH_CFG)},
  32         {MEI_PCI_DEVICE(MEI_DEV_ID_82G965, MEI_ME_ICH_CFG)},
  33         {MEI_PCI_DEVICE(MEI_DEV_ID_82GM965, MEI_ME_ICH_CFG)},
  34         {MEI_PCI_DEVICE(MEI_DEV_ID_82GME965, MEI_ME_ICH_CFG)},
  35         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82Q35, MEI_ME_ICH_CFG)},
  36         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82G33, MEI_ME_ICH_CFG)},
  37         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82Q33, MEI_ME_ICH_CFG)},
  38         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82X38, MEI_ME_ICH_CFG)},
  39         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_3200, MEI_ME_ICH_CFG)},
  40
  41         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_6, MEI_ME_ICH_CFG)},
  42         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_7, MEI_ME_ICH_CFG)},
  43         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_8, MEI_ME_ICH_CFG)},
  44         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_9, MEI_ME_ICH_CFG)},
  45         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_10, MEI_ME_ICH_CFG)},
  46         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_1, MEI_ME_ICH_CFG)},
  47         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_2, MEI_ME_ICH_CFG)},
  48         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_3, MEI_ME_ICH_CFG)},
  49         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_4, MEI_ME_ICH_CFG)},
  50
  51         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_1, MEI_ME_ICH10_CFG)},
  52         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_2, MEI_ME_ICH10_CFG)},
  53         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_3, MEI_ME_ICH10_CFG)},
  54         {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_4, MEI_ME_ICH10_CFG)},
  55
  56         {MEI_PCI_DEVICE(MEI_DEV_ID_IBXPK_1, MEI_ME_PCH6_CFG)},
  57         {MEI_PCI_DEVICE(MEI_DEV_ID_IBXPK_2, MEI_ME_PCH6_CFG)},
  58         {MEI_PCI_DEVICE(MEI_DEV_ID_CPT_1, MEI_ME_PCH_CPT_PBG_CFG)},
  59         {MEI_PCI_DEVICE(MEI_DEV_ID_PBG_1, MEI_ME_PCH_CPT_PBG_CFG)},
  60         {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_1, MEI_ME_PCH7_CFG)},
  61         {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_2, MEI_ME_PCH7_CFG)},
  62         {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_3, MEI_ME_PCH7_CFG)},
  63         {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_H, MEI_ME_PCH8_SPS_4_CFG)},
  64         {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_W, MEI_ME_PCH8_SPS_4_CFG)},
  65         {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_LP, MEI_ME_PCH8_CFG)},
  66         {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_HR, MEI_ME_PCH8_SPS_4_CFG)},
  67         {MEI_PCI_DEVICE(MEI_DEV_ID_WPT_LP, MEI_ME_PCH8_CFG)},
  68         {MEI_PCI_DEVICE(MEI_DEV_ID_WPT_LP_2, MEI_ME_PCH8_CFG)},
  69
  70         {MEI_PCI_DEVICE(MEI_DEV_ID_SPT, MEI_ME_PCH8_CFG)},
  71         {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_2, MEI_ME_PCH8_CFG)},
  72         {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_3, MEI_ME_PCH8_ITOUCH_CFG)},
  73         {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H, MEI_ME_PCH8_SPS_4_CFG)},
  74         {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H_2, MEI_ME_PCH8_SPS_4_CFG)},
  75         {MEI_PCI_DEVICE(MEI_DEV_ID_LBG, MEI_ME_PCH12_SPS_4_CFG)},
  76
  77         {MEI_PCI_DEVICE(MEI_DEV_ID_BXT_M, MEI_ME_PCH8_CFG)},
  78         {MEI_PCI_DEVICE(MEI_DEV_ID_APL_I, MEI_ME_PCH8_CFG)},
  79
  80         {MEI_PCI_DEVICE(MEI_DEV_ID_DNV_IE, MEI_ME_PCH8_CFG)},
  81
  82         {MEI_PCI_DEVICE(MEI_DEV_ID_GLK, MEI_ME_PCH8_CFG)},
  83
  84         {MEI_PCI_DEVICE(MEI_DEV_ID_KBP, MEI_ME_PCH8_CFG)},
  85         {MEI_PCI_DEVICE(MEI_DEV_ID_KBP_2, MEI_ME_PCH8_CFG)},
  86         {MEI_PCI_DEVICE(MEI_DEV_ID_KBP_3, MEI_ME_PCH8_CFG)},
  87
  88         {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_LP, MEI_ME_PCH12_CFG)},
  89         {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_LP_3, MEI_ME_PCH8_ITOUCH_CFG)},
  90         {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_H, MEI_ME_PCH12_SPS_CFG)},
  91         {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_H_3, MEI_ME_PCH12_SPS_ITOUCH_CFG)},
  92
  93         {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_LP, MEI_ME_PCH12_CFG)},
  94         {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_LP_3, MEI_ME_PCH8_ITOUCH_CFG)},
  95         {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_V, MEI_ME_PCH12_CFG)},
  96         {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_H, MEI_ME_PCH12_CFG)},
  97         {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_H_3, MEI_ME_PCH8_ITOUCH_CFG)},
  98
  99         {MEI_PCI_DEVICE(MEI_DEV_ID_ICP_LP, MEI_ME_PCH12_CFG)},
 100         {MEI_PCI_DEVICE(MEI_DEV_ID_ICP_N, MEI_ME_PCH12_CFG)},
 101
 102         {MEI_PCI_DEVICE(MEI_DEV_ID_TGP_LP, MEI_ME_PCH15_CFG)},
 103         {MEI_PCI_DEVICE(MEI_DEV_ID_TGP_H, MEI_ME_PCH15_SPS_CFG)},
 104
 105         {MEI_PCI_DEVICE(MEI_DEV_ID_JSP_N, MEI_ME_PCH15_CFG)},
 106
 107         {MEI_PCI_DEVICE(MEI_DEV_ID_MCC, MEI_ME_PCH15_CFG)},
 108         {MEI_PCI_DEVICE(MEI_DEV_ID_MCC_4, MEI_ME_PCH8_CFG)},
 109
 110         {MEI_PCI_DEVICE(MEI_DEV_ID_CDF, MEI_ME_PCH8_CFG)},
 111
 112         {MEI_PCI_DEVICE(MEI_DEV_ID_EBG, MEI_ME_PCH15_SPS_CFG)},
 113
 114         {MEI_PCI_DEVICE(MEI_DEV_ID_ADP_S, MEI_ME_PCH15_CFG)},
 115         {MEI_PCI_DEVICE(MEI_DEV_ID_ADP_LP, MEI_ME_PCH15_CFG)},
 116         {MEI_PCI_DEVICE(MEI_DEV_ID_ADP_P, MEI_ME_PCH15_CFG)},
 117         {MEI_PCI_DEVICE(MEI_DEV_ID_ADP_N, MEI_ME_PCH15_CFG)},
 118
 119         {MEI_PCI_DEVICE(MEI_DEV_ID_RPL_S, MEI_ME_PCH15_SPS_CFG)},
 120
 121         {MEI_PCI_DEVICE(MEI_DEV_ID_MTL_M, MEI_ME_PCH15_CFG)},
 122         {MEI_PCI_DEVICE(MEI_DEV_ID_ARL_S, MEI_ME_PCH15_CFG)},
 123         {MEI_PCI_DEVICE(MEI_DEV_ID_ARL_H, MEI_ME_PCH15_CFG)},
 124
 125         {MEI_PCI_DEVICE(MEI_DEV_ID_LNL_M, MEI_ME_PCH15_CFG)},
 126
 127         /* required last entry */
 128         {0, }
 129 };
 130
 131 MODULE_DEVICE_TABLE(pci, mei_me_pci_tbl);
 132
 133 #ifdef CONFIG_PM
 134 static inline void mei_me_set_pm_domain(struct mei_device *dev);
 135 static inline void mei_me_unset_pm_domain(struct mei_device *dev);
 136 #else
 137 static inline void mei_me_set_pm_domain(struct mei_device *dev) {}
 138 static inline void mei_me_unset_pm_domain(struct mei_device *dev) {}
 139 #endif /* CONFIG_PM */
 140
 141 static int mei_me_read_fws(const struct mei_device *dev, int where, u32 *val)
 142 {
 143         struct pci_dev *pdev = to_pci_dev(dev->dev);
 144
 145         return pci_read_config_dword(pdev, where, val);
 146 }
 147
 148 /**
 149  * mei_me_quirk_probe - probe for devices that doesn't valid ME interface
 150  *
 151  * @pdev: PCI device structure
 152  * @cfg: per generation config
 153  *
 154  * Return: true if ME Interface is valid, false otherwise
 155  */
 156 static bool mei_me_quirk_probe(struct pci_dev *pdev,
 157                                 const struct mei_cfg *cfg)
 158 {
 159         if (cfg->quirk_probe && cfg->quirk_probe(pdev)) {
 160                 dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n");
 161                 return false;
 162         }
 163
 164         return true;
 165 }
 166
 167 /**
 168  * mei_me_probe - Device Initialization Routine
 169  *
 170  * @pdev: PCI device structure
 171  * @ent: entry in kcs_pci_tbl
 172  *
 173  * Return: 0 on success, <0 on failure.
 174  */
 175 static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 176 {
 177         const struct mei_cfg *cfg;
 178         struct mei_device *dev;
 179         struct mei_me_hw *hw;
 180         unsigned int irqflags;
 181         int err;
 182
 183         cfg = mei_me_get_cfg(ent->driver_data);
 184         if (!cfg)
 185                 return -ENODEV;
 186
 187         if (!mei_me_quirk_probe(pdev, cfg))
 188                 return -ENODEV;
 189
 190         /* enable pci dev */
 191         err = pcim_enable_device(pdev);
 192         if (err) {
 193                 dev_err(&pdev->dev, "failed to enable pci device.\n");
 194                 goto end;
 195         }
 196         /* set PCI host mastering  */
 197         pci_set_master(pdev);
 198         /* pci request regions and mapping IO device memory for mei driver */
 199         err = pcim_iomap_regions(pdev, BIT(0), KBUILD_MODNAME);
 200         if (err) {
 201                 dev_err(&pdev->dev, "failed to get pci regions.\n");
 202                 goto end;
 203         }
 204
 205         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
 206         if (err) {
 207                 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
 208                 goto end;
 209         }
 210
 211         /* allocates and initializes the mei dev structure */
 212         dev = mei_me_dev_init(&pdev->dev, cfg, false);
 213         if (!dev) {
 214                 err = -ENOMEM;
 215                 goto end;
 216         }
 217         hw = to_me_hw(dev);
 218         hw->mem_addr = pcim_iomap_table(pdev)[0];
 219         hw->read_fws = mei_me_read_fws;
 220
 221         pci_enable_msi(pdev);
 222
 223         hw->irq = pdev->irq;
 224
 225          /* request and enable interrupt */
 226         irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED;
 227
 228         err = request_threaded_irq(pdev->irq,
 229                         mei_me_irq_quick_handler,
 230                         mei_me_irq_thread_handler,
 231                         irqflags, KBUILD_MODNAME, dev);
 232         if (err) {
 233                 dev_err(&pdev->dev, "request_threaded_irq failure. irq = %d\n",
 234                        pdev->irq);
 235                 goto end;
 236         }
 237
 238         if (mei_start(dev)) {
 239                 dev_err(&pdev->dev, "init hw failure.\n");
 240                 err = -ENODEV;
 241                 goto release_irq;
 242         }
 243
 244         pm_runtime_set_autosuspend_delay(&pdev->dev, MEI_ME_RPM_TIMEOUT);
 245         pm_runtime_use_autosuspend(&pdev->dev);
 246
 247         err = mei_register(dev, &pdev->dev);
 248         if (err)
 249                 goto stop;
 250
 251         pci_set_drvdata(pdev, dev);
 252
 253         /*
 254          * MEI requires to resume from runtime suspend mode
 255          * in order to perform link reset flow upon system suspend.
 256          */
 257         dev_pm_set_driver_flags(&pdev->dev, DPM_FLAG_NO_DIRECT_COMPLETE);
 258
 259         /*
 260          * ME maps runtime suspend/resume to D0i states,
 261          * hence we need to go around native PCI runtime service which
 262          * eventually brings the device into D3cold/hot state,
 263          * but the mei device cannot wake up from D3 unlike from D0i3.
 264          * To get around the PCI device native runtime pm,
 265          * ME uses runtime pm domain handlers which take precedence
 266          * over the driver's pm handlers.
 267          */
 268         mei_me_set_pm_domain(dev);
 269
 270         if (mei_pg_is_enabled(dev)) {
 271                 pm_runtime_put_noidle(&pdev->dev);
 272                 if (hw->d0i3_supported)
 273                         pm_runtime_allow(&pdev->dev);
 274         }
 275
 276         dev_dbg(&pdev->dev, "initialization successful.\n");
 277
 278         return 0;
 279
 280 stop:
 281         mei_stop(dev);
 282 release_irq:
 283         mei_cancel_work(dev);
 284         mei_disable_interrupts(dev);
 285         free_irq(pdev->irq, dev);
 286 end:
 287         dev_err(&pdev->dev, "initialization failed.\n");
 288         return err;
 289 }
 290
 291 /**
 292  * mei_me_shutdown - Device Removal Routine
 293  *
 294  * @pdev: PCI device structure
 295  *
 296  * mei_me_shutdown is called from the reboot notifier
 297  * it's a simplified version of remove so we go down
 298  * faster.
 299  */
 300 static void mei_me_shutdown(struct pci_dev *pdev)
 301 {
 302         struct mei_device *dev = pci_get_drvdata(pdev);
 303
 304         dev_dbg(&pdev->dev, "shutdown\n");
 305         mei_stop(dev);
 306
 307         mei_me_unset_pm_domain(dev);
 308
 309         mei_disable_interrupts(dev);
 310         free_irq(pdev->irq, dev);
 311 }
 312
 313 /**
 314  * mei_me_remove - Device Removal Routine
 315  *
 316  * @pdev: PCI device structure
 317  *
 318  * mei_me_remove is called by the PCI subsystem to alert the driver
 319  * that it should release a PCI device.
 320  */
 321 static void mei_me_remove(struct pci_dev *pdev)
 322 {
 323         struct mei_device *dev = pci_get_drvdata(pdev);
 324
 325         if (mei_pg_is_enabled(dev))
 326                 pm_runtime_get_noresume(&pdev->dev);
 327
 328         dev_dbg(&pdev->dev, "stop\n");
 329         mei_stop(dev);
 330
 331         mei_me_unset_pm_domain(dev);
 332
 333         mei_disable_interrupts(dev);
 334
 335         free_irq(pdev->irq, dev);
 336
 337         mei_deregister(dev);
 338 }
 339
 340 #ifdef CONFIG_PM_SLEEP
 341 static int mei_me_pci_prepare(struct device *device)
 342 {
 343         pm_runtime_resume(device);
 344         return 0;
 345 }
 346
 347 static int mei_me_pci_suspend(struct device *device)
 348 {
 349         struct pci_dev *pdev = to_pci_dev(device);
 350         struct mei_device *dev = pci_get_drvdata(pdev);
 351
 352         dev_dbg(&pdev->dev, "suspend\n");
 353
 354         mei_stop(dev);
 355
 356         mei_disable_interrupts(dev);
 357
 358         free_irq(pdev->irq, dev);
 359         pci_disable_msi(pdev);
 360
 361         return 0;
 362 }
 363
 364 static int mei_me_pci_resume(struct device *device)
 365 {
 366         struct pci_dev *pdev = to_pci_dev(device);
 367         struct mei_device *dev = pci_get_drvdata(pdev);
 368         unsigned int irqflags;
 369         int err;
 370
 371         pci_enable_msi(pdev);
 372
 373         irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED;
 374
 375         /* request and enable interrupt */
 376         err = request_threaded_irq(pdev->irq,
 377                         mei_me_irq_quick_handler,
 378                         mei_me_irq_thread_handler,
 379                         irqflags, KBUILD_MODNAME, dev);
 380
 381         if (err) {
 382                 dev_err(&pdev->dev, "request_threaded_irq failed: irq = %d.\n",
 383                                 pdev->irq);
 384                 return err;
 385         }
 386
 387         err = mei_restart(dev);
 388         if (err)
 389                 return err;
 390
 391         /* Start timer if stopped in suspend */
 392         schedule_delayed_work(&dev->timer_work, HZ);
 393
 394         return 0;
 395 }
 396
 397 static void mei_me_pci_complete(struct device *device)
 398 {
 399         pm_runtime_suspend(device);
 400 }
 401 #else /* CONFIG_PM_SLEEP */
 402
 403 #define mei_me_pci_prepare NULL
 404 #define mei_me_pci_complete NULL
 405
 406 #endif /* !CONFIG_PM_SLEEP */
 407
 408 #ifdef CONFIG_PM
 409 static int mei_me_pm_runtime_idle(struct device *device)
 410 {
 411         struct mei_device *dev = dev_get_drvdata(device);
 412
 413         dev_dbg(device, "rpm: me: runtime_idle\n");
 414
 415         if (mei_write_is_idle(dev))
 416                 pm_runtime_autosuspend(device);
 417
 418         return -EBUSY;
 419 }
 420
 421 static int mei_me_pm_runtime_suspend(struct device *device)
 422 {
 423         struct mei_device *dev = dev_get_drvdata(device);
 424         int ret;
 425
 426         dev_dbg(device, "rpm: me: runtime suspend\n");
 427
 428         mutex_lock(&dev->device_lock);
 429
 430         if (mei_write_is_idle(dev))
 431                 ret = mei_me_pg_enter_sync(dev);
 432         else
 433                 ret = -EAGAIN;
 434
 435         mutex_unlock(&dev->device_lock);
 436
 437         dev_dbg(device, "rpm: me: runtime suspend ret=%d\n", ret);
 438
 439         if (ret && ret != -EAGAIN)
 440                 schedule_work(&dev->reset_work);
 441
 442         return ret;
 443 }
 444
 445 static int mei_me_pm_runtime_resume(struct device *device)
 446 {
 447         struct mei_device *dev = dev_get_drvdata(device);
 448         int ret;
 449
 450         dev_dbg(device, "rpm: me: runtime resume\n");
 451
 452         mutex_lock(&dev->device_lock);
 453
 454         ret = mei_me_pg_exit_sync(dev);
 455
 456         mutex_unlock(&dev->device_lock);
 457
 458         dev_dbg(device, "rpm: me: runtime resume ret = %d\n", ret);
 459
 460         if (ret)
 461                 schedule_work(&dev->reset_work);
 462
 463         return ret;
 464 }
 465
 466 /**
 467  * mei_me_set_pm_domain - fill and set pm domain structure for device
 468  *
 469  * @dev: mei_device
 470  */
 471 static inline void mei_me_set_pm_domain(struct mei_device *dev)
 472 {
 473         struct pci_dev *pdev  = to_pci_dev(dev->dev);
 474
 475         if (pdev->dev.bus && pdev->dev.bus->pm) {
 476                 dev->pg_domain.ops = *pdev->dev.bus->pm;
 477
 478                 dev->pg_domain.ops.runtime_suspend = mei_me_pm_runtime_suspend;
 479                 dev->pg_domain.ops.runtime_resume = mei_me_pm_runtime_resume;
 480                 dev->pg_domain.ops.runtime_idle = mei_me_pm_runtime_idle;
 481
 482                 dev_pm_domain_set(&pdev->dev, &dev->pg_domain);
 483         }
 484 }
 485
 486 /**
 487  * mei_me_unset_pm_domain - clean pm domain structure for device
 488  *
 489  * @dev: mei_device
 490  */
 491 static inline void mei_me_unset_pm_domain(struct mei_device *dev)
 492 {
 493         /* stop using pm callbacks if any */
 494         dev_pm_domain_set(dev->dev, NULL);
 495 }
 496
 497 static const struct dev_pm_ops mei_me_pm_ops = {
 498         .prepare = mei_me_pci_prepare,
 499         .complete = mei_me_pci_complete,
 500         SET_SYSTEM_SLEEP_PM_OPS(mei_me_pci_suspend,
 501                                 mei_me_pci_resume)
 502         SET_RUNTIME_PM_OPS(
 503                 mei_me_pm_runtime_suspend,
 504                 mei_me_pm_runtime_resume,
 505                 mei_me_pm_runtime_idle)
 506 };
 507
 508 #define MEI_ME_PM_OPS   (&mei_me_pm_ops)
 509 #else
 510 #define MEI_ME_PM_OPS   NULL
 511 #endif /* CONFIG_PM */
 512 /*
 513  *  PCI driver structure
 514  */
 515 static struct pci_driver mei_me_driver = {
 516         .name = KBUILD_MODNAME,
 517         .id_table = mei_me_pci_tbl,
 518         .probe = mei_me_probe,
 519         .remove = mei_me_remove,
 520         .shutdown = mei_me_shutdown,
 521         .driver.pm = MEI_ME_PM_OPS,
 522         .driver.probe_type = PROBE_PREFER_ASYNCHRONOUS,
 523 };
 524
 525 module_pci_driver(mei_me_driver);
 526
 527 MODULE_AUTHOR("Intel Corporation");
 528 MODULE_DESCRIPTION("Intel(R) Management Engine Interface");
 529 MODULE_LICENSE("GPL v2");