drivers/usb/host/xhci-pci.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * xHCI host controller driver PCI Bus Glue.
   4  *
   5  * Copyright (C) 2008 Intel Corp.
   6  *
   7  * Author: Sarah Sharp
   8  * Some code borrowed from the Linux EHCI driver.
   9  */
  10
  11 #include <linux/pci.h>
  12 #include <linux/slab.h>
  13 #include <linux/module.h>
  14 #include <linux/acpi.h>
  15
  16 #include "xhci.h"
  17 #include "xhci-trace.h"
  18
  19 #define SSIC_PORT_NUM           2
  20 #define SSIC_PORT_CFG2          0x880c
  21 #define SSIC_PORT_CFG2_OFFSET   0x30
  22 #define PROG_DONE               (1 << 30)
  23 #define SSIC_PORT_UNUSED        (1 << 31)
  24
  25 /* Device for a quirk */
  26 #define PCI_VENDOR_ID_FRESCO_LOGIC      0x1b73
  27 #define PCI_DEVICE_ID_FRESCO_LOGIC_PDK  0x1000
  28 #define PCI_DEVICE_ID_FRESCO_LOGIC_FL1009       0x1009
  29 #define PCI_DEVICE_ID_FRESCO_LOGIC_FL1400       0x1400
  30
  31 #define PCI_VENDOR_ID_ETRON             0x1b6f
  32 #define PCI_DEVICE_ID_EJ168             0x7023
  33
  34 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_XHCI      0x8c31
  35 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI   0x9c31
  36 #define PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI        0x9cb1
  37 #define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI             0x22b5
  38 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI         0xa12f
  39 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI        0x9d2f
  40 #define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI              0x0aa8
  41 #define PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI              0x1aa8
  42 #define PCI_DEVICE_ID_INTEL_APL_XHCI                    0x5aa8
  43 #define PCI_DEVICE_ID_INTEL_DNV_XHCI                    0x19d0
  44
  45 #define PCI_DEVICE_ID_AMD_PROMONTORYA_4                 0x43b9
  46 #define PCI_DEVICE_ID_AMD_PROMONTORYA_3                 0x43ba
  47 #define PCI_DEVICE_ID_AMD_PROMONTORYA_2                 0x43bb
  48 #define PCI_DEVICE_ID_AMD_PROMONTORYA_1                 0x43bc
  49 #define PCI_DEVICE_ID_ASMEDIA_1042A_XHCI                0x1142
  50
  51 static const char hcd_name[] = "xhci_hcd";
  52
  53 static struct hc_driver __read_mostly xhci_pci_hc_driver;
  54
  55 static int xhci_pci_setup(struct usb_hcd *hcd);
  56
  57 static const struct xhci_driver_overrides xhci_pci_overrides __initconst = {
  58         .reset = xhci_pci_setup,
  59 };
  60
  61 /* called after powerup, by probe or system-pm "wakeup" */
  62 static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev)
  63 {
  64         /*
  65          * TODO: Implement finding debug ports later.
  66          * TODO: see if there are any quirks that need to be added to handle
  67          * new extended capabilities.
  68          */
  69
  70         /* PCI Memory-Write-Invalidate cycle support is optional (uncommon) */
  71         if (!pci_set_mwi(pdev))
  72                 xhci_dbg(xhci, "MWI active\n");
  73
  74         xhci_dbg(xhci, "Finished xhci_pci_reinit\n");
  75         return 0;
  76 }
  77
  78 static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
  79 {
  80         struct pci_dev          *pdev = to_pci_dev(dev);
  81
  82         /* Look for vendor-specific quirks */
  83         if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
  84                         (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK ||
  85                          pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1400)) {
  86                 if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK &&
  87                                 pdev->revision == 0x0) {
  88                         xhci->quirks |= XHCI_RESET_EP_QUIRK;
  89                         xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
  90                                 "QUIRK: Fresco Logic xHC needs configure"
  91                                 " endpoint cmd after reset endpoint");
  92                 }
  93                 if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK &&
  94                                 pdev->revision == 0x4) {
  95                         xhci->quirks |= XHCI_SLOW_SUSPEND;
  96                         xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
  97                                 "QUIRK: Fresco Logic xHC revision %u"
  98                                 "must be suspended extra slowly",
  99                                 pdev->revision);
 100                 }
 101                 if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK)
 102                         xhci->quirks |= XHCI_BROKEN_STREAMS;
 103                 /* Fresco Logic confirms: all revisions of this chip do not
 104                  * support MSI, even though some of them claim to in their PCI
 105                  * capabilities.
 106                  */
 107                 xhci->quirks |= XHCI_BROKEN_MSI;
 108                 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
 109                                 "QUIRK: Fresco Logic revision %u "
 110                                 "has broken MSI implementation",
 111                                 pdev->revision);
 112                 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 113         }
 114
 115         if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
 116                         pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1009)
 117                 xhci->quirks |= XHCI_BROKEN_STREAMS;
 118
 119         if (pdev->vendor == PCI_VENDOR_ID_NEC)
 120                 xhci->quirks |= XHCI_NEC_HOST;
 121
 122         if (pdev->vendor == PCI_VENDOR_ID_AMD && xhci->hci_version == 0x96)
 123                 xhci->quirks |= XHCI_AMD_0x96_HOST;
 124
 125         /* AMD PLL quirk */
 126         if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info())
 127                 xhci->quirks |= XHCI_AMD_PLL_FIX;
 128
 129         if (pdev->vendor == PCI_VENDOR_ID_AMD &&
 130                 (pdev->device == 0x15e0 ||
 131                  pdev->device == 0x15e1 ||
 132                  pdev->device == 0x43bb))
 133                 xhci->quirks |= XHCI_SUSPEND_DELAY;
 134
 135         if (pdev->vendor == PCI_VENDOR_ID_AMD)
 136                 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 137
 138         if ((pdev->vendor == PCI_VENDOR_ID_AMD) &&
 139                 ((pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_4) ||
 140                 (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_3) ||
 141                 (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_2) ||
 142                 (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_1)))
 143                 xhci->quirks |= XHCI_U2_DISABLE_WAKE;
 144
 145         if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
 146                 xhci->quirks |= XHCI_LPM_SUPPORT;
 147                 xhci->quirks |= XHCI_INTEL_HOST;
 148                 xhci->quirks |= XHCI_AVOID_BEI;
 149         }
 150         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 151                         pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI) {
 152                 xhci->quirks |= XHCI_EP_LIMIT_QUIRK;
 153                 xhci->limit_active_eps = 64;
 154                 xhci->quirks |= XHCI_SW_BW_CHECKING;
 155                 /*
 156                  * PPT desktop boards DH77EB and DH77DF will power back on after
 157                  * a few seconds of being shutdown.  The fix for this is to
 158                  * switch the ports from xHCI to EHCI on shutdown.  We can't use
 159                  * DMI information to find those particular boards (since each
 160                  * vendor will change the board name), so we have to key off all
 161                  * PPT chipsets.
 162                  */
 163                 xhci->quirks |= XHCI_SPURIOUS_REBOOT;
 164         }
 165         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 166                 (pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI ||
 167                  pdev->device == PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI)) {
 168                 xhci->quirks |= XHCI_SPURIOUS_REBOOT;
 169                 xhci->quirks |= XHCI_SPURIOUS_WAKEUP;
 170         }
 171         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 172                 (pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
 173                  pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
 174                  pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
 175                  pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI ||
 176                  pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI ||
 177                  pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI ||
 178                  pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI)) {
 179                 xhci->quirks |= XHCI_PME_STUCK_QUIRK;
 180         }
 181         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 182                  pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) {
 183                 xhci->quirks |= XHCI_SSIC_PORT_UNUSED;
 184                 xhci->quirks |= XHCI_INTEL_USB_ROLE_SW;
 185         }
 186         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 187             (pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
 188              pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI ||
 189              pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI))
 190                 xhci->quirks |= XHCI_MISSING_CAS;
 191
 192         if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
 193                         pdev->device == PCI_DEVICE_ID_EJ168) {
 194                 xhci->quirks |= XHCI_RESET_ON_RESUME;
 195                 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 196                 xhci->quirks |= XHCI_BROKEN_STREAMS;
 197         }
 198         if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
 199                         pdev->device == 0x0014)
 200                 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 201         if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
 202                         pdev->device == 0x0015)
 203                 xhci->quirks |= XHCI_RESET_ON_RESUME;
 204         if (pdev->vendor == PCI_VENDOR_ID_VIA)
 205                 xhci->quirks |= XHCI_RESET_ON_RESUME;
 206
 207         /* See https://bugzilla.kernel.org/show_bug.cgi?id=79511 */
 208         if (pdev->vendor == PCI_VENDOR_ID_VIA &&
 209                         pdev->device == 0x3432)
 210                 xhci->quirks |= XHCI_BROKEN_STREAMS;
 211
 212         if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
 213                         pdev->device == 0x1042)
 214                 xhci->quirks |= XHCI_BROKEN_STREAMS;
 215         if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
 216                         pdev->device == 0x1142)
 217                 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 218
 219         if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
 220                 pdev->device == PCI_DEVICE_ID_ASMEDIA_1042A_XHCI)
 221                 xhci->quirks |= XHCI_ASMEDIA_MODIFY_FLOWCONTROL;
 222
 223         if (pdev->vendor == PCI_VENDOR_ID_TI && pdev->device == 0x8241)
 224                 xhci->quirks |= XHCI_LIMIT_ENDPOINT_INTERVAL_7;
 225
 226         if (xhci->quirks & XHCI_RESET_ON_RESUME)
 227                 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
 228                                 "QUIRK: Resetting on resume");
 229 }
 230
 231 #ifdef CONFIG_ACPI
 232 static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev)
 233 {
 234         static const guid_t intel_dsm_guid =
 235                 GUID_INIT(0xac340cb7, 0xe901, 0x45bf,
 236                           0xb7, 0xe6, 0x2b, 0x34, 0xec, 0x93, 0x1e, 0x23);
 237         union acpi_object *obj;
 238
 239         obj = acpi_evaluate_dsm(ACPI_HANDLE(&dev->dev), &intel_dsm_guid, 3, 1,
 240                                 NULL);
 241         ACPI_FREE(obj);
 242 }
 243 #else
 244 static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) { }
 245 #endif /* CONFIG_ACPI */
 246
 247 /* called during probe() after chip reset completes */
 248 static int xhci_pci_setup(struct usb_hcd *hcd)
 249 {
 250         struct xhci_hcd         *xhci;
 251         struct pci_dev          *pdev = to_pci_dev(hcd->self.controller);
 252         int                     retval;
 253
 254         xhci = hcd_to_xhci(hcd);
 255         if (!xhci->sbrn)
 256                 pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn);
 257
 258         /* imod_interval is the interrupt moderation value in nanoseconds. */
 259         xhci->imod_interval = 40000;
 260
 261         retval = xhci_gen_setup(hcd, xhci_pci_quirks);
 262         if (retval)
 263                 return retval;
 264
 265         if (!usb_hcd_is_primary_hcd(hcd))
 266                 return 0;
 267
 268         xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn);
 269
 270         /* Find any debug ports */
 271         return xhci_pci_reinit(xhci, pdev);
 272 }
 273
 274 /*
 275  * We need to register our own PCI probe function (instead of the USB core's
 276  * function) in order to create a second roothub under xHCI.
 277  */
 278 static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 279 {
 280         int retval;
 281         struct xhci_hcd *xhci;
 282         struct hc_driver *driver;
 283         struct usb_hcd *hcd;
 284
 285         driver = (struct hc_driver *)id->driver_data;
 286
 287         /* For some HW implementation, a XHCI reset is just not enough... */
 288         if (usb_xhci_needs_pci_reset(dev)) {
 289                 dev_info(&dev->dev, "Resetting\n");
 290                 if (pci_reset_function_locked(dev))
 291                         dev_warn(&dev->dev, "Reset failed");
 292         }
 293
 294         /* Prevent runtime suspending between USB-2 and USB-3 initialization */
 295         pm_runtime_get_noresume(&dev->dev);
 296
 297         /* Register the USB 2.0 roothub.
 298          * FIXME: USB core must know to register the USB 2.0 roothub first.
 299          * This is sort of silly, because we could just set the HCD driver flags
 300          * to say USB 2.0, but I'm not sure what the implications would be in
 301          * the other parts of the HCD code.
 302          */
 303         retval = usb_hcd_pci_probe(dev, id);
 304
 305         if (retval)
 306                 goto put_runtime_pm;
 307
 308         /* USB 2.0 roothub is stored in the PCI device now. */
 309         hcd = dev_get_drvdata(&dev->dev);
 310         xhci = hcd_to_xhci(hcd);
 311         xhci->shared_hcd = usb_create_shared_hcd(driver, &dev->dev,
 312                                 pci_name(dev), hcd);
 313         if (!xhci->shared_hcd) {
 314                 retval = -ENOMEM;
 315                 goto dealloc_usb2_hcd;
 316         }
 317
 318         retval = xhci_ext_cap_init(xhci);
 319         if (retval)
 320                 goto put_usb3_hcd;
 321
 322         retval = usb_add_hcd(xhci->shared_hcd, dev->irq,
 323                         IRQF_SHARED);
 324         if (retval)
 325                 goto put_usb3_hcd;
 326         /* Roothub already marked as USB 3.0 speed */
 327
 328         if (!(xhci->quirks & XHCI_BROKEN_STREAMS) &&
 329                         HCC_MAX_PSA(xhci->hcc_params) >= 4)
 330                 xhci->shared_hcd->can_do_streams = 1;
 331
 332         if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
 333                 xhci_pme_acpi_rtd3_enable(dev);
 334
 335         /* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */
 336         pm_runtime_put_noidle(&dev->dev);
 337
 338         return 0;
 339
 340 put_usb3_hcd:
 341         usb_put_hcd(xhci->shared_hcd);
 342 dealloc_usb2_hcd:
 343         usb_hcd_pci_remove(dev);
 344 put_runtime_pm:
 345         pm_runtime_put_noidle(&dev->dev);
 346         return retval;
 347 }
 348
 349 static void xhci_pci_remove(struct pci_dev *dev)
 350 {
 351         struct xhci_hcd *xhci;
 352
 353         xhci = hcd_to_xhci(pci_get_drvdata(dev));
 354         xhci->xhc_state |= XHCI_STATE_REMOVING;
 355         if (xhci->shared_hcd) {
 356                 usb_remove_hcd(xhci->shared_hcd);
 357                 usb_put_hcd(xhci->shared_hcd);
 358         }
 359
 360         /* Workaround for spurious wakeups at shutdown with HSW */
 361         if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)
 362                 pci_set_power_state(dev, PCI_D3hot);
 363
 364         usb_hcd_pci_remove(dev);
 365 }
 366
 367 #ifdef CONFIG_PM
 368 /*
 369  * In some Intel xHCI controllers, in order to get D3 working,
 370  * through a vendor specific SSIC CONFIG register at offset 0x883c,
 371  * SSIC PORT need to be marked as "unused" before putting xHCI
 372  * into D3. After D3 exit, the SSIC port need to be marked as "used".
 373  * Without this change, xHCI might not enter D3 state.
 374  */
 375 static void xhci_ssic_port_unused_quirk(struct usb_hcd *hcd, bool suspend)
 376 {
 377         struct xhci_hcd *xhci = hcd_to_xhci(hcd);
 378         u32 val;
 379         void __iomem *reg;
 380         int i;
 381
 382         for (i = 0; i < SSIC_PORT_NUM; i++) {
 383                 reg = (void __iomem *) xhci->cap_regs +
 384                                 SSIC_PORT_CFG2 +
 385                                 i * SSIC_PORT_CFG2_OFFSET;
 386
 387                 /* Notify SSIC that SSIC profile programming is not done. */
 388                 val = readl(reg) & ~PROG_DONE;
 389                 writel(val, reg);
 390
 391                 /* Mark SSIC port as unused(suspend) or used(resume) */
 392                 val = readl(reg);
 393                 if (suspend)
 394                         val |= SSIC_PORT_UNUSED;
 395                 else
 396                         val &= ~SSIC_PORT_UNUSED;
 397                 writel(val, reg);
 398
 399                 /* Notify SSIC that SSIC profile programming is done */
 400                 val = readl(reg) | PROG_DONE;
 401                 writel(val, reg);
 402                 readl(reg);
 403         }
 404 }
 405
 406 /*
 407  * Make sure PME works on some Intel xHCI controllers by writing 1 to clear
 408  * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4
 409  */
 410 static void xhci_pme_quirk(struct usb_hcd *hcd)
 411 {
 412         struct xhci_hcd *xhci = hcd_to_xhci(hcd);
 413         void __iomem *reg;
 414         u32 val;
 415
 416         reg = (void __iomem *) xhci->cap_regs + 0x80a4;
 417         val = readl(reg);
 418         writel(val | BIT(28), reg);
 419         readl(reg);
 420 }
 421
 422 static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
 423 {
 424         struct xhci_hcd *xhci = hcd_to_xhci(hcd);
 425         struct pci_dev          *pdev = to_pci_dev(hcd->self.controller);
 426         int                     ret;
 427
 428         /*
 429          * Systems with the TI redriver that loses port status change events
 430          * need to have the registers polled during D3, so avoid D3cold.
 431          */
 432         if (xhci->quirks & XHCI_COMP_MODE_QUIRK)
 433                 pci_d3cold_disable(pdev);
 434
 435         if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
 436                 xhci_pme_quirk(hcd);
 437
 438         if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
 439                 xhci_ssic_port_unused_quirk(hcd, true);
 440
 441         ret = xhci_suspend(xhci, do_wakeup);
 442         if (ret && (xhci->quirks & XHCI_SSIC_PORT_UNUSED))
 443                 xhci_ssic_port_unused_quirk(hcd, false);
 444
 445         return ret;
 446 }
 447
 448 static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
 449 {
 450         struct xhci_hcd         *xhci = hcd_to_xhci(hcd);
 451         struct pci_dev          *pdev = to_pci_dev(hcd->self.controller);
 452         int                     retval = 0;
 453
 454         /* The BIOS on systems with the Intel Panther Point chipset may or may
 455          * not support xHCI natively.  That means that during system resume, it
 456          * may switch the ports back to EHCI so that users can use their
 457          * keyboard to select a kernel from GRUB after resume from hibernate.
 458          *
 459          * The BIOS is supposed to remember whether the OS had xHCI ports
 460          * enabled before resume, and switch the ports back to xHCI when the
 461          * BIOS/OS semaphore is written, but we all know we can't trust BIOS
 462          * writers.
 463          *
 464          * Unconditionally switch the ports back to xHCI after a system resume.
 465          * It should not matter whether the EHCI or xHCI controller is
 466          * resumed first. It's enough to do the switchover in xHCI because
 467          * USB core won't notice anything as the hub driver doesn't start
 468          * running again until after all the devices (including both EHCI and
 469          * xHCI host controllers) have been resumed.
 470          */
 471
 472         if (pdev->vendor == PCI_VENDOR_ID_INTEL)
 473                 usb_enable_intel_xhci_ports(pdev);
 474
 475         if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
 476                 xhci_ssic_port_unused_quirk(hcd, false);
 477
 478         if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
 479                 xhci_pme_quirk(hcd);
 480
 481         retval = xhci_resume(xhci, hibernated);
 482         return retval;
 483 }
 484 #endif /* CONFIG_PM */
 485
 486 /*-------------------------------------------------------------------------*/
 487
 488 /* PCI driver selection metadata; PCI hotplugging uses this */
 489 static const struct pci_device_id pci_ids[] = { {
 490         /* handle any USB 3.0 xHCI controller */
 491         PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0),
 492         .driver_data =  (unsigned long) &xhci_pci_hc_driver,
 493         },
 494         { /* end: all zeroes */ }
 495 };
 496 MODULE_DEVICE_TABLE(pci, pci_ids);
 497
 498 /* pci driver glue; this is a "new style" PCI driver module */
 499 static struct pci_driver xhci_pci_driver = {
 500         .name =         (char *) hcd_name,
 501         .id_table =     pci_ids,
 502
 503         .probe =        xhci_pci_probe,
 504         .remove =       xhci_pci_remove,
 505         /* suspend and resume implemented later */
 506
 507         .shutdown =     usb_hcd_pci_shutdown,
 508 #ifdef CONFIG_PM
 509         .driver = {
 510                 .pm = &usb_hcd_pci_pm_ops
 511         },
 512 #endif
 513 };
 514
 515 static int __init xhci_pci_init(void)
 516 {
 517         xhci_init_driver(&xhci_pci_hc_driver, &xhci_pci_overrides);
 518 #ifdef CONFIG_PM
 519         xhci_pci_hc_driver.pci_suspend = xhci_pci_suspend;
 520         xhci_pci_hc_driver.pci_resume = xhci_pci_resume;
 521 #endif
 522         return pci_register_driver(&xhci_pci_driver);
 523 }
 524 module_init(xhci_pci_init);
 525
 526 static void __exit xhci_pci_exit(void)
 527 {
 528         pci_unregister_driver(&xhci_pci_driver);
 529 }
 530 module_exit(xhci_pci_exit);
 531
 532 MODULE_DESCRIPTION("xHCI PCI Host Controller Driver");
 533 MODULE_LICENSE("GPL");