drivers/usb/core/hcd-pci.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright David Brownell 2000-2002
   4  */
   5
   6 #include <linux/kernel.h>
   7 #include <linux/module.h>
   8 #include <linux/pci.h>
   9 #include <linux/usb.h>
  10 #include <linux/usb/hcd.h>
  11
  12 #include <asm/io.h>
  13 #include <asm/irq.h>
  14
  15 #ifdef CONFIG_PPC_PMAC
  16 #include <asm/machdep.h>
  17 #include <asm/pmac_feature.h>
  18 #endif
  19
  20 #include "usb.h"
  21
  22
  23 /* PCI-based HCs are common, but plenty of non-PCI HCs are used too */
  24
  25 /*
  26  * Coordinate handoffs between EHCI and companion controllers
  27  * during EHCI probing and system resume.
  28  */
  29
  30 static DECLARE_RWSEM(companions_rwsem);
  31
  32 #define CL_UHCI         PCI_CLASS_SERIAL_USB_UHCI
  33 #define CL_OHCI         PCI_CLASS_SERIAL_USB_OHCI
  34 #define CL_EHCI         PCI_CLASS_SERIAL_USB_EHCI
  35
  36 static inline int is_ohci_or_uhci(struct pci_dev *pdev)
  37 {
  38         return pdev->class == CL_OHCI || pdev->class == CL_UHCI;
  39 }
  40
  41 typedef void (*companion_fn)(struct pci_dev *pdev, struct usb_hcd *hcd,
  42                 struct pci_dev *companion, struct usb_hcd *companion_hcd);
  43
  44 /* Iterate over PCI devices in the same slot as pdev and call fn for each */
  45 static void for_each_companion(struct pci_dev *pdev, struct usb_hcd *hcd,
  46                 companion_fn fn)
  47 {
  48         struct pci_dev          *companion;
  49         struct usb_hcd          *companion_hcd;
  50         unsigned int            slot = PCI_SLOT(pdev->devfn);
  51
  52         /*
  53          * Iterate through other PCI functions in the same slot.
  54          * If the function's drvdata isn't set then it isn't bound to
  55          * a USB host controller driver, so skip it.
  56          */
  57         companion = NULL;
  58         for_each_pci_dev(companion) {
  59                 if (companion->bus != pdev->bus ||
  60                                 PCI_SLOT(companion->devfn) != slot)
  61                         continue;
  62
  63                 /*
  64                  * Companion device should be either UHCI,OHCI or EHCI host
  65                  * controller, otherwise skip.
  66                  */
  67                 if (companion->class != CL_UHCI && companion->class != CL_OHCI &&
  68                                 companion->class != CL_EHCI)
  69                         continue;
  70
  71                 companion_hcd = pci_get_drvdata(companion);
  72                 if (!companion_hcd || !companion_hcd->self.root_hub)
  73                         continue;
  74                 fn(pdev, hcd, companion, companion_hcd);
  75         }
  76 }
  77
  78 /*
  79  * We're about to add an EHCI controller, which will unceremoniously grab
  80  * all the port connections away from its companions.  To prevent annoying
  81  * error messages, lock the companion's root hub and gracefully unconfigure
  82  * it beforehand.  Leave it locked until the EHCI controller is all set.
  83  */
  84 static void ehci_pre_add(struct pci_dev *pdev, struct usb_hcd *hcd,
  85                 struct pci_dev *companion, struct usb_hcd *companion_hcd)
  86 {
  87         struct usb_device *udev;
  88
  89         if (is_ohci_or_uhci(companion)) {
  90                 udev = companion_hcd->self.root_hub;
  91                 usb_lock_device(udev);
  92                 usb_set_configuration(udev, 0);
  93         }
  94 }
  95
  96 /*
  97  * Adding the EHCI controller has either succeeded or failed.  Set the
  98  * companion pointer accordingly, and in either case, reconfigure and
  99  * unlock the root hub.
 100  */
 101 static void ehci_post_add(struct pci_dev *pdev, struct usb_hcd *hcd,
 102                 struct pci_dev *companion, struct usb_hcd *companion_hcd)
 103 {
 104         struct usb_device *udev;
 105
 106         if (is_ohci_or_uhci(companion)) {
 107                 if (dev_get_drvdata(&pdev->dev)) {      /* Succeeded */
 108                         dev_dbg(&pdev->dev, "HS companion for %s\n",
 109                                         dev_name(&companion->dev));
 110                         companion_hcd->self.hs_companion = &hcd->self;
 111                 }
 112                 udev = companion_hcd->self.root_hub;
 113                 usb_set_configuration(udev, 1);
 114                 usb_unlock_device(udev);
 115         }
 116 }
 117
 118 /*
 119  * We just added a non-EHCI controller.  Find the EHCI controller to
 120  * which it is a companion, and store a pointer to the bus structure.
 121  */
 122 static void non_ehci_add(struct pci_dev *pdev, struct usb_hcd *hcd,
 123                 struct pci_dev *companion, struct usb_hcd *companion_hcd)
 124 {
 125         if (is_ohci_or_uhci(pdev) && companion->class == CL_EHCI) {
 126                 dev_dbg(&pdev->dev, "FS/LS companion for %s\n",
 127                                 dev_name(&companion->dev));
 128                 hcd->self.hs_companion = &companion_hcd->self;
 129         }
 130 }
 131
 132 /* We are removing an EHCI controller.  Clear the companions' pointers. */
 133 static void ehci_remove(struct pci_dev *pdev, struct usb_hcd *hcd,
 134                 struct pci_dev *companion, struct usb_hcd *companion_hcd)
 135 {
 136         if (is_ohci_or_uhci(companion))
 137                 companion_hcd->self.hs_companion = NULL;
 138 }
 139
 140 #ifdef  CONFIG_PM
 141
 142 /* An EHCI controller must wait for its companions before resuming. */
 143 static void ehci_wait_for_companions(struct pci_dev *pdev, struct usb_hcd *hcd,
 144                 struct pci_dev *companion, struct usb_hcd *companion_hcd)
 145 {
 146         if (is_ohci_or_uhci(companion))
 147                 device_pm_wait_for_dev(&pdev->dev, &companion->dev);
 148 }
 149
 150 #endif  /* CONFIG_PM */
 151
 152 /*-------------------------------------------------------------------------*/
 153
 154 /* configure so an HC device and id are always provided */
 155 /* always called with process context; sleeping is OK */
 156
 157 /**
 158  * usb_hcd_pci_probe - initialize PCI-based HCDs
 159  * @dev: USB Host Controller being probed
 160  * @id: pci hotplug id connecting controller to HCD framework
 161  * @driver: USB HC driver handle
 162  *
 163  * Context: task context, might sleep
 164  *
 165  * Allocates basic PCI resources for this USB host controller, and
 166  * then invokes the start() method for the HCD associated with it
 167  * through the hotplug entry's driver_data.
 168  *
 169  * Store this function in the HCD's struct pci_driver as probe().
 170  *
 171  * Return: 0 if successful.
 172  */
 173 int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id,
 174                       const struct hc_driver *driver)
 175 {
 176         struct usb_hcd          *hcd;
 177         int                     retval;
 178         int                     hcd_irq = 0;
 179
 180         if (usb_disabled())
 181                 return -ENODEV;
 182
 183         if (!id)
 184                 return -EINVAL;
 185
 186         if (!driver)
 187                 return -EINVAL;
 188
 189         if (pci_enable_device(dev) < 0)
 190                 return -ENODEV;
 191
 192         /*
 193          * The xHCI driver has its own irq management
 194          * make sure irq setup is not touched for xhci in generic hcd code
 195          */
 196         if ((driver->flags & HCD_MASK) < HCD_USB3) {
 197                 retval = pci_alloc_irq_vectors(dev, 1, 1, PCI_IRQ_LEGACY | PCI_IRQ_MSI);
 198                 if (retval < 0) {
 199                         dev_err(&dev->dev,
 200                         "Found HC with no IRQ. Check BIOS/PCI %s setup!\n",
 201                                 pci_name(dev));
 202                         retval = -ENODEV;
 203                         goto disable_pci;
 204                 }
 205                 hcd_irq = pci_irq_vector(dev, 0);
 206         }
 207
 208         hcd = usb_create_hcd(driver, &dev->dev, pci_name(dev));
 209         if (!hcd) {
 210                 retval = -ENOMEM;
 211                 goto free_irq_vectors;
 212         }
 213
 214         hcd->amd_resume_bug = (usb_hcd_amd_remote_wakeup_quirk(dev) &&
 215                         driver->flags & (HCD_USB11 | HCD_USB3)) ? 1 : 0;
 216
 217         if (driver->flags & HCD_MEMORY) {
 218                 /* EHCI, OHCI */
 219                 hcd->rsrc_start = pci_resource_start(dev, 0);
 220                 hcd->rsrc_len = pci_resource_len(dev, 0);
 221                 if (!devm_request_mem_region(&dev->dev, hcd->rsrc_start,
 222                                 hcd->rsrc_len, driver->description)) {
 223                         dev_dbg(&dev->dev, "controller already in use\n");
 224                         retval = -EBUSY;
 225                         goto put_hcd;
 226                 }
 227                 hcd->regs = devm_ioremap(&dev->dev, hcd->rsrc_start,
 228                                 hcd->rsrc_len);
 229                 if (hcd->regs == NULL) {
 230                         dev_dbg(&dev->dev, "error mapping memory\n");
 231                         retval = -EFAULT;
 232                         goto put_hcd;
 233                 }
 234
 235         } else {
 236                 /* UHCI */
 237                 int     region;
 238
 239                 for (region = 0; region < PCI_STD_NUM_BARS; region++) {
 240                         if (!(pci_resource_flags(dev, region) &
 241                                         IORESOURCE_IO))
 242                                 continue;
 243
 244                         hcd->rsrc_start = pci_resource_start(dev, region);
 245                         hcd->rsrc_len = pci_resource_len(dev, region);
 246                         if (devm_request_region(&dev->dev, hcd->rsrc_start,
 247                                         hcd->rsrc_len, driver->description))
 248                                 break;
 249                 }
 250                 if (region == PCI_STD_NUM_BARS) {
 251                         dev_dbg(&dev->dev, "no i/o regions available\n");
 252                         retval = -EBUSY;
 253                         goto put_hcd;
 254                 }
 255         }
 256
 257         pci_set_master(dev);
 258
 259         /* Note: dev_set_drvdata must be called while holding the rwsem */
 260         if (dev->class == CL_EHCI) {
 261                 down_write(&companions_rwsem);
 262                 dev_set_drvdata(&dev->dev, hcd);
 263                 for_each_companion(dev, hcd, ehci_pre_add);
 264                 retval = usb_add_hcd(hcd, hcd_irq, IRQF_SHARED);
 265                 if (retval != 0)
 266                         dev_set_drvdata(&dev->dev, NULL);
 267                 for_each_companion(dev, hcd, ehci_post_add);
 268                 up_write(&companions_rwsem);
 269         } else {
 270                 down_read(&companions_rwsem);
 271                 dev_set_drvdata(&dev->dev, hcd);
 272                 retval = usb_add_hcd(hcd, hcd_irq, IRQF_SHARED);
 273                 if (retval != 0)
 274                         dev_set_drvdata(&dev->dev, NULL);
 275                 else
 276                         for_each_companion(dev, hcd, non_ehci_add);
 277                 up_read(&companions_rwsem);
 278         }
 279
 280         if (retval != 0)
 281                 goto put_hcd;
 282         device_wakeup_enable(hcd->self.controller);
 283
 284         if (pci_dev_run_wake(dev))
 285                 pm_runtime_put_noidle(&dev->dev);
 286         return retval;
 287
 288 put_hcd:
 289         usb_put_hcd(hcd);
 290 free_irq_vectors:
 291         if ((driver->flags & HCD_MASK) < HCD_USB3)
 292                 pci_free_irq_vectors(dev);
 293 disable_pci:
 294         pci_disable_device(dev);
 295         dev_err(&dev->dev, "init %s fail, %d\n", pci_name(dev), retval);
 296         return retval;
 297 }
 298 EXPORT_SYMBOL_GPL(usb_hcd_pci_probe);
 299
 300
 301 /* may be called without controller electrically present */
 302 /* may be called with controller, bus, and devices active */
 303
 304 /**
 305  * usb_hcd_pci_remove - shutdown processing for PCI-based HCDs
 306  * @dev: USB Host Controller being removed
 307  *
 308  * Context: task context, might sleep
 309  *
 310  * Reverses the effect of usb_hcd_pci_probe(), first invoking
 311  * the HCD's stop() method.  It is always called from a thread
 312  * context, normally "rmmod", "apmd", or something similar.
 313  *
 314  * Store this function in the HCD's struct pci_driver as remove().
 315  */
 316 void usb_hcd_pci_remove(struct pci_dev *dev)
 317 {
 318         struct usb_hcd          *hcd;
 319         int                     hcd_driver_flags;
 320
 321         hcd = pci_get_drvdata(dev);
 322         if (!hcd)
 323                 return;
 324
 325         hcd_driver_flags = hcd->driver->flags;
 326
 327         if (pci_dev_run_wake(dev))
 328                 pm_runtime_get_noresume(&dev->dev);
 329
 330         /* Fake an interrupt request in order to give the driver a chance
 331          * to test whether the controller hardware has been removed (e.g.,
 332          * cardbus physical eject).
 333          */
 334         local_irq_disable();
 335         usb_hcd_irq(0, hcd);
 336         local_irq_enable();
 337
 338         /* Note: dev_set_drvdata must be called while holding the rwsem */
 339         if (dev->class == CL_EHCI) {
 340                 down_write(&companions_rwsem);
 341                 for_each_companion(dev, hcd, ehci_remove);
 342                 usb_remove_hcd(hcd);
 343                 dev_set_drvdata(&dev->dev, NULL);
 344                 up_write(&companions_rwsem);
 345         } else {
 346                 /* Not EHCI; just clear the companion pointer */
 347                 down_read(&companions_rwsem);
 348                 hcd->self.hs_companion = NULL;
 349                 usb_remove_hcd(hcd);
 350                 dev_set_drvdata(&dev->dev, NULL);
 351                 up_read(&companions_rwsem);
 352         }
 353         usb_put_hcd(hcd);
 354         if ((hcd_driver_flags & HCD_MASK) < HCD_USB3)
 355                 pci_free_irq_vectors(dev);
 356         pci_disable_device(dev);
 357 }
 358 EXPORT_SYMBOL_GPL(usb_hcd_pci_remove);
 359
 360 /**
 361  * usb_hcd_pci_shutdown - shutdown host controller
 362  * @dev: USB Host Controller being shutdown
 363  */
 364 void usb_hcd_pci_shutdown(struct pci_dev *dev)
 365 {
 366         struct usb_hcd          *hcd;
 367
 368         hcd = pci_get_drvdata(dev);
 369         if (!hcd)
 370                 return;
 371
 372         if (test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags) &&
 373                         hcd->driver->shutdown) {
 374                 hcd->driver->shutdown(hcd);
 375                 if (usb_hcd_is_primary_hcd(hcd) && hcd->irq > 0)
 376                         free_irq(hcd->irq, hcd);
 377                 pci_disable_device(dev);
 378         }
 379 }
 380 EXPORT_SYMBOL_GPL(usb_hcd_pci_shutdown);
 381
 382 #ifdef  CONFIG_PM
 383
 384 #ifdef  CONFIG_PPC_PMAC
 385 static void powermac_set_asic(struct pci_dev *pci_dev, int enable)
 386 {
 387         /* Enanble or disable ASIC clocks for USB */
 388         if (machine_is(powermac)) {
 389                 struct device_node      *of_node;
 390
 391                 of_node = pci_device_to_OF_node(pci_dev);
 392                 if (of_node)
 393                         pmac_call_feature(PMAC_FTR_USB_ENABLE,
 394                                         of_node, 0, enable);
 395         }
 396 }
 397
 398 #else
 399
 400 static inline void powermac_set_asic(struct pci_dev *pci_dev, int enable)
 401 {}
 402
 403 #endif  /* CONFIG_PPC_PMAC */
 404
 405 static int check_root_hub_suspended(struct device *dev)
 406 {
 407         struct usb_hcd          *hcd = dev_get_drvdata(dev);
 408
 409         if (HCD_RH_RUNNING(hcd)) {
 410                 dev_warn(dev, "Root hub is not suspended\n");
 411                 return -EBUSY;
 412         }
 413         if (hcd->shared_hcd) {
 414                 hcd = hcd->shared_hcd;
 415                 if (HCD_RH_RUNNING(hcd)) {
 416                         dev_warn(dev, "Secondary root hub is not suspended\n");
 417                         return -EBUSY;
 418                 }
 419         }
 420         return 0;
 421 }
 422
 423 static int suspend_common(struct device *dev, bool do_wakeup)
 424 {
 425         struct pci_dev          *pci_dev = to_pci_dev(dev);
 426         struct usb_hcd          *hcd = pci_get_drvdata(pci_dev);
 427         int                     retval;
 428
 429         /* Root hub suspend should have stopped all downstream traffic,
 430          * and all bus master traffic.  And done so for both the interface
 431          * and the stub usb_device (which we check here).  But maybe it
 432          * didn't; writing sysfs power/state files ignores such rules...
 433          */
 434         retval = check_root_hub_suspended(dev);
 435         if (retval)
 436                 return retval;
 437
 438         if (hcd->driver->pci_suspend && !HCD_DEAD(hcd)) {
 439                 /* Optimization: Don't suspend if a root-hub wakeup is
 440                  * pending and it would cause the HCD to wake up anyway.
 441                  */
 442                 if (do_wakeup && HCD_WAKEUP_PENDING(hcd))
 443                         return -EBUSY;
 444                 if (do_wakeup && hcd->shared_hcd &&
 445                                 HCD_WAKEUP_PENDING(hcd->shared_hcd))
 446                         return -EBUSY;
 447                 retval = hcd->driver->pci_suspend(hcd, do_wakeup);
 448                 suspend_report_result(dev, hcd->driver->pci_suspend, retval);
 449
 450                 /* Check again in case wakeup raced with pci_suspend */
 451                 if ((retval == 0 && do_wakeup && HCD_WAKEUP_PENDING(hcd)) ||
 452                                 (retval == 0 && do_wakeup && hcd->shared_hcd &&
 453                                  HCD_WAKEUP_PENDING(hcd->shared_hcd))) {
 454                         if (hcd->driver->pci_resume)
 455                                 hcd->driver->pci_resume(hcd, false);
 456                         retval = -EBUSY;
 457                 }
 458                 if (retval)
 459                         return retval;
 460         }
 461
 462         /* If MSI-X is enabled, the driver will have synchronized all vectors
 463          * in pci_suspend(). If MSI or legacy PCI is enabled, that will be
 464          * synchronized here.
 465          */
 466         if (!hcd->msix_enabled)
 467                 synchronize_irq(pci_irq_vector(pci_dev, 0));
 468
 469         /* Downstream ports from this root hub should already be quiesced, so
 470          * there will be no DMA activity.  Now we can shut down the upstream
 471          * link (except maybe for PME# resume signaling).  We'll enter a
 472          * low power state during suspend_noirq, if the hardware allows.
 473          */
 474         pci_disable_device(pci_dev);
 475         return retval;
 476 }
 477
 478 static int resume_common(struct device *dev, int event)
 479 {
 480         struct pci_dev          *pci_dev = to_pci_dev(dev);
 481         struct usb_hcd          *hcd = pci_get_drvdata(pci_dev);
 482         int                     retval;
 483
 484         if (HCD_RH_RUNNING(hcd) ||
 485                         (hcd->shared_hcd &&
 486                          HCD_RH_RUNNING(hcd->shared_hcd))) {
 487                 dev_dbg(dev, "can't resume, not suspended!\n");
 488                 return 0;
 489         }
 490
 491         retval = pci_enable_device(pci_dev);
 492         if (retval < 0) {
 493                 dev_err(dev, "can't re-enable after resume, %d!\n", retval);
 494                 return retval;
 495         }
 496
 497         pci_set_master(pci_dev);
 498
 499         if (hcd->driver->pci_resume && !HCD_DEAD(hcd)) {
 500
 501                 /*
 502                  * Only EHCI controllers have to wait for their companions.
 503                  * No locking is needed because PCI controller drivers do not
 504                  * get unbound during system resume.
 505                  */
 506                 if (pci_dev->class == CL_EHCI && event != PM_EVENT_AUTO_RESUME)
 507                         for_each_companion(pci_dev, hcd,
 508                                         ehci_wait_for_companions);
 509
 510                 retval = hcd->driver->pci_resume(hcd,
 511                                 event == PM_EVENT_RESTORE);
 512                 if (retval) {
 513                         dev_err(dev, "PCI post-resume error %d!\n", retval);
 514                         usb_hc_died(hcd);
 515                 }
 516         }
 517         return retval;
 518 }
 519
 520 #ifdef  CONFIG_PM_SLEEP
 521
 522 static int hcd_pci_suspend(struct device *dev)
 523 {
 524         return suspend_common(dev, device_may_wakeup(dev));
 525 }
 526
 527 static int hcd_pci_suspend_noirq(struct device *dev)
 528 {
 529         struct pci_dev          *pci_dev = to_pci_dev(dev);
 530         struct usb_hcd          *hcd = pci_get_drvdata(pci_dev);
 531         int                     retval;
 532
 533         retval = check_root_hub_suspended(dev);
 534         if (retval)
 535                 return retval;
 536
 537         pci_save_state(pci_dev);
 538
 539         /* If the root hub is dead rather than suspended, disallow remote
 540          * wakeup.  usb_hc_died() should ensure that both hosts are marked as
 541          * dying, so we only need to check the primary roothub.
 542          */
 543         if (HCD_DEAD(hcd))
 544                 device_set_wakeup_enable(dev, 0);
 545         dev_dbg(dev, "wakeup: %d\n", device_may_wakeup(dev));
 546
 547         /* Possibly enable remote wakeup,
 548          * choose the appropriate low-power state, and go to that state.
 549          */
 550         retval = pci_prepare_to_sleep(pci_dev);
 551         if (retval == -EIO) {           /* Low-power not supported */
 552                 dev_dbg(dev, "--> PCI D0 legacy\n");
 553                 retval = 0;
 554         } else if (retval == 0) {
 555                 dev_dbg(dev, "--> PCI %s\n",
 556                                 pci_power_name(pci_dev->current_state));
 557         } else {
 558                 suspend_report_result(dev, pci_prepare_to_sleep, retval);
 559                 return retval;
 560         }
 561
 562         powermac_set_asic(pci_dev, 0);
 563         return retval;
 564 }
 565
 566 static int hcd_pci_resume_noirq(struct device *dev)
 567 {
 568         powermac_set_asic(to_pci_dev(dev), 1);
 569         return 0;
 570 }
 571
 572 static int hcd_pci_resume(struct device *dev)
 573 {
 574         return resume_common(dev, PM_EVENT_RESUME);
 575 }
 576
 577 static int hcd_pci_restore(struct device *dev)
 578 {
 579         return resume_common(dev, PM_EVENT_RESTORE);
 580 }
 581
 582 #else
 583
 584 #define hcd_pci_suspend         NULL
 585 #define hcd_pci_suspend_noirq   NULL
 586 #define hcd_pci_resume_noirq    NULL
 587 #define hcd_pci_resume          NULL
 588 #define hcd_pci_restore         NULL
 589
 590 #endif  /* CONFIG_PM_SLEEP */
 591
 592 static int hcd_pci_runtime_suspend(struct device *dev)
 593 {
 594         int     retval;
 595
 596         retval = suspend_common(dev, true);
 597         if (retval == 0)
 598                 powermac_set_asic(to_pci_dev(dev), 0);
 599         dev_dbg(dev, "hcd_pci_runtime_suspend: %d\n", retval);
 600         return retval;
 601 }
 602
 603 static int hcd_pci_runtime_resume(struct device *dev)
 604 {
 605         int     retval;
 606
 607         powermac_set_asic(to_pci_dev(dev), 1);
 608         retval = resume_common(dev, PM_EVENT_AUTO_RESUME);
 609         dev_dbg(dev, "hcd_pci_runtime_resume: %d\n", retval);
 610         return retval;
 611 }
 612
 613 const struct dev_pm_ops usb_hcd_pci_pm_ops = {
 614         .suspend        = hcd_pci_suspend,
 615         .suspend_noirq  = hcd_pci_suspend_noirq,
 616         .resume_noirq   = hcd_pci_resume_noirq,
 617         .resume         = hcd_pci_resume,
 618         .freeze         = hcd_pci_suspend,
 619         .freeze_noirq   = check_root_hub_suspended,
 620         .thaw_noirq     = NULL,
 621         .thaw           = hcd_pci_resume,
 622         .poweroff       = hcd_pci_suspend,
 623         .poweroff_noirq = hcd_pci_suspend_noirq,
 624         .restore_noirq  = hcd_pci_resume_noirq,
 625         .restore        = hcd_pci_restore,
 626         .runtime_suspend = hcd_pci_runtime_suspend,
 627         .runtime_resume = hcd_pci_runtime_resume,
 628 };
 629 EXPORT_SYMBOL_GPL(usb_hcd_pci_pm_ops);
 630
 631 #endif  /* CONFIG_PM */