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 #include <linux/reset.h>
  16
  17 #include "xhci.h"
  18 #include "xhci-trace.h"
  19 #include "xhci-pci.h"
  20
  21 #define SSIC_PORT_NUM           2
  22 #define SSIC_PORT_CFG2          0x880c
  23 #define SSIC_PORT_CFG2_OFFSET   0x30
  24 #define PROG_DONE               (1 << 30)
  25 #define SSIC_PORT_UNUSED        (1 << 31)
  26 #define SPARSE_DISABLE_BIT      17
  27 #define SPARSE_CNTL_ENABLE      0xC12C
  28
  29 /* Device for a quirk */
  30 #define PCI_VENDOR_ID_FRESCO_LOGIC      0x1b73
  31 #define PCI_DEVICE_ID_FRESCO_LOGIC_PDK  0x1000
  32 #define PCI_DEVICE_ID_FRESCO_LOGIC_FL1009       0x1009
  33 #define PCI_DEVICE_ID_FRESCO_LOGIC_FL1100       0x1100
  34 #define PCI_DEVICE_ID_FRESCO_LOGIC_FL1400       0x1400
  35
  36 #define PCI_VENDOR_ID_ETRON             0x1b6f
  37 #define PCI_DEVICE_ID_EJ168             0x7023
  38
  39 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_XHCI      0x8c31
  40 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI   0x9c31
  41 #define PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI        0x9cb1
  42 #define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI             0x22b5
  43 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI         0xa12f
  44 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI        0x9d2f
  45 #define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI              0x0aa8
  46 #define PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI              0x1aa8
  47 #define PCI_DEVICE_ID_INTEL_APL_XHCI                    0x5aa8
  48 #define PCI_DEVICE_ID_INTEL_DNV_XHCI                    0x19d0
  49 #define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_XHCI        0x15b5
  50 #define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_4C_XHCI        0x15b6
  51 #define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_XHCI        0x15c1
  52 #define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_XHCI      0x15db
  53 #define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_XHCI      0x15d4
  54 #define PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_XHCI         0x15e9
  55 #define PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_XHCI         0x15ec
  56 #define PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_XHCI         0x15f0
  57 #define PCI_DEVICE_ID_INTEL_ICE_LAKE_XHCI               0x8a13
  58 #define PCI_DEVICE_ID_INTEL_CML_XHCI                    0xa3af
  59 #define PCI_DEVICE_ID_INTEL_TIGER_LAKE_XHCI             0x9a13
  60 #define PCI_DEVICE_ID_INTEL_MAPLE_RIDGE_XHCI            0x1138
  61 #define PCI_DEVICE_ID_INTEL_ALDER_LAKE_XHCI             0x461e
  62 #define PCI_DEVICE_ID_INTEL_ALDER_LAKE_N_XHCI           0x464e
  63 #define PCI_DEVICE_ID_INTEL_ALDER_LAKE_PCH_XHCI 0x51ed
  64
  65 #define PCI_DEVICE_ID_AMD_RENOIR_XHCI                   0x1639
  66 #define PCI_DEVICE_ID_AMD_PROMONTORYA_4                 0x43b9
  67 #define PCI_DEVICE_ID_AMD_PROMONTORYA_3                 0x43ba
  68 #define PCI_DEVICE_ID_AMD_PROMONTORYA_2                 0x43bb
  69 #define PCI_DEVICE_ID_AMD_PROMONTORYA_1                 0x43bc
  70 #define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_1            0x161a
  71 #define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_2            0x161b
  72 #define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_3            0x161d
  73 #define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_4            0x161e
  74 #define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_5            0x15d6
  75 #define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_6            0x15d7
  76 #define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_7            0x161c
  77 #define PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_8            0x161f
  78
  79 #define PCI_DEVICE_ID_ASMEDIA_1042_XHCI                 0x1042
  80 #define PCI_DEVICE_ID_ASMEDIA_1042A_XHCI                0x1142
  81 #define PCI_DEVICE_ID_ASMEDIA_1142_XHCI                 0x1242
  82 #define PCI_DEVICE_ID_ASMEDIA_2142_XHCI                 0x2142
  83 #define PCI_DEVICE_ID_ASMEDIA_3242_XHCI                 0x3242
  84
  85 static const char hcd_name[] = "xhci_hcd";
  86
  87 static struct hc_driver __read_mostly xhci_pci_hc_driver;
  88
  89 static int xhci_pci_setup(struct usb_hcd *hcd);
  90
  91 static const struct xhci_driver_overrides xhci_pci_overrides __initconst = {
  92         .reset = xhci_pci_setup,
  93 };
  94
  95 /* called after powerup, by probe or system-pm "wakeup" */
  96 static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev)
  97 {
  98         /*
  99          * TODO: Implement finding debug ports later.
 100          * TODO: see if there are any quirks that need to be added to handle
 101          * new extended capabilities.
 102          */
 103
 104         /* PCI Memory-Write-Invalidate cycle support is optional (uncommon) */
 105         if (!pci_set_mwi(pdev))
 106                 xhci_dbg(xhci, "MWI active\n");
 107
 108         xhci_dbg(xhci, "Finished xhci_pci_reinit\n");
 109         return 0;
 110 }
 111
 112 static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 113 {
 114         struct pci_dev                  *pdev = to_pci_dev(dev);
 115         struct xhci_driver_data         *driver_data;
 116         const struct pci_device_id      *id;
 117
 118         id = pci_match_id(pdev->driver->id_table, pdev);
 119
 120         if (id && id->driver_data) {
 121                 driver_data = (struct xhci_driver_data *)id->driver_data;
 122                 xhci->quirks |= driver_data->quirks;
 123         }
 124
 125         /* Look for vendor-specific quirks */
 126         if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
 127                         (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK ||
 128                          pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1400)) {
 129                 if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK &&
 130                                 pdev->revision == 0x0) {
 131                         xhci->quirks |= XHCI_RESET_EP_QUIRK;
 132                         xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
 133                                 "QUIRK: Fresco Logic xHC needs configure"
 134                                 " endpoint cmd after reset endpoint");
 135                 }
 136                 if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK &&
 137                                 pdev->revision == 0x4) {
 138                         xhci->quirks |= XHCI_SLOW_SUSPEND;
 139                         xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
 140                                 "QUIRK: Fresco Logic xHC revision %u"
 141                                 "must be suspended extra slowly",
 142                                 pdev->revision);
 143                 }
 144                 if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK)
 145                         xhci->quirks |= XHCI_BROKEN_STREAMS;
 146                 /* Fresco Logic confirms: all revisions of this chip do not
 147                  * support MSI, even though some of them claim to in their PCI
 148                  * capabilities.
 149                  */
 150                 xhci->quirks |= XHCI_BROKEN_MSI;
 151                 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
 152                                 "QUIRK: Fresco Logic revision %u "
 153                                 "has broken MSI implementation",
 154                                 pdev->revision);
 155                 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 156         }
 157
 158         if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
 159                         pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1009)
 160                 xhci->quirks |= XHCI_BROKEN_STREAMS;
 161
 162         if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
 163                         pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1100)
 164                 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 165
 166         if (pdev->vendor == PCI_VENDOR_ID_NEC)
 167                 xhci->quirks |= XHCI_NEC_HOST;
 168
 169         if (pdev->vendor == PCI_VENDOR_ID_AMD && xhci->hci_version == 0x96)
 170                 xhci->quirks |= XHCI_AMD_0x96_HOST;
 171
 172         /* AMD PLL quirk */
 173         if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_quirk_pll_check())
 174                 xhci->quirks |= XHCI_AMD_PLL_FIX;
 175
 176         if (pdev->vendor == PCI_VENDOR_ID_AMD &&
 177                 (pdev->device == 0x145c ||
 178                  pdev->device == 0x15e0 ||
 179                  pdev->device == 0x15e1 ||
 180                  pdev->device == 0x43bb))
 181                 xhci->quirks |= XHCI_SUSPEND_DELAY;
 182
 183         if (pdev->vendor == PCI_VENDOR_ID_AMD &&
 184             (pdev->device == 0x15e0 || pdev->device == 0x15e1))
 185                 xhci->quirks |= XHCI_SNPS_BROKEN_SUSPEND;
 186
 187         if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x15e5) {
 188                 xhci->quirks |= XHCI_DISABLE_SPARSE;
 189                 xhci->quirks |= XHCI_RESET_ON_RESUME;
 190         }
 191
 192         if (pdev->vendor == PCI_VENDOR_ID_AMD)
 193                 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 194
 195         if ((pdev->vendor == PCI_VENDOR_ID_AMD) &&
 196                 ((pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_4) ||
 197                 (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_3) ||
 198                 (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_2) ||
 199                 (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_1)))
 200                 xhci->quirks |= XHCI_U2_DISABLE_WAKE;
 201
 202         if (pdev->vendor == PCI_VENDOR_ID_AMD &&
 203                 pdev->device == PCI_DEVICE_ID_AMD_RENOIR_XHCI)
 204                 xhci->quirks |= XHCI_BROKEN_D3COLD;
 205
 206         if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
 207                 xhci->quirks |= XHCI_LPM_SUPPORT;
 208                 xhci->quirks |= XHCI_INTEL_HOST;
 209                 xhci->quirks |= XHCI_AVOID_BEI;
 210         }
 211         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 212                         pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI) {
 213                 xhci->quirks |= XHCI_EP_LIMIT_QUIRK;
 214                 xhci->limit_active_eps = 64;
 215                 xhci->quirks |= XHCI_SW_BW_CHECKING;
 216                 /*
 217                  * PPT desktop boards DH77EB and DH77DF will power back on after
 218                  * a few seconds of being shutdown.  The fix for this is to
 219                  * switch the ports from xHCI to EHCI on shutdown.  We can't use
 220                  * DMI information to find those particular boards (since each
 221                  * vendor will change the board name), so we have to key off all
 222                  * PPT chipsets.
 223                  */
 224                 xhci->quirks |= XHCI_SPURIOUS_REBOOT;
 225         }
 226         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 227                 (pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI ||
 228                  pdev->device == PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI)) {
 229                 xhci->quirks |= XHCI_SPURIOUS_REBOOT;
 230                 xhci->quirks |= XHCI_SPURIOUS_WAKEUP;
 231         }
 232         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 233                 (pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
 234                  pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
 235                  pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
 236                  pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI ||
 237                  pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI ||
 238                  pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI ||
 239                  pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI ||
 240                  pdev->device == PCI_DEVICE_ID_INTEL_CML_XHCI)) {
 241                 xhci->quirks |= XHCI_PME_STUCK_QUIRK;
 242         }
 243         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 244             pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI)
 245                 xhci->quirks |= XHCI_SSIC_PORT_UNUSED;
 246         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 247             (pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
 248              pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
 249              pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI))
 250                 xhci->quirks |= XHCI_INTEL_USB_ROLE_SW;
 251         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 252             (pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
 253              pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
 254              pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
 255              pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI ||
 256              pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI))
 257                 xhci->quirks |= XHCI_MISSING_CAS;
 258
 259         if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 260             (pdev->device == PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_2C_XHCI ||
 261              pdev->device == PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_4C_XHCI ||
 262              pdev->device == PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_XHCI ||
 263              pdev->device == PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_XHCI ||
 264              pdev->device == PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_XHCI ||
 265              pdev->device == PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_XHCI ||
 266              pdev->device == PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_XHCI ||
 267              pdev->device == PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_XHCI ||
 268              pdev->device == PCI_DEVICE_ID_INTEL_ICE_LAKE_XHCI ||
 269              pdev->device == PCI_DEVICE_ID_INTEL_TIGER_LAKE_XHCI ||
 270              pdev->device == PCI_DEVICE_ID_INTEL_MAPLE_RIDGE_XHCI ||
 271              pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_XHCI ||
 272              pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_N_XHCI ||
 273              pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_PCH_XHCI))
 274                 xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
 275
 276         if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
 277                         pdev->device == PCI_DEVICE_ID_EJ168) {
 278                 xhci->quirks |= XHCI_RESET_ON_RESUME;
 279                 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 280                 xhci->quirks |= XHCI_BROKEN_STREAMS;
 281         }
 282         if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
 283             pdev->device == 0x0014) {
 284                 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 285                 xhci->quirks |= XHCI_ZERO_64B_REGS;
 286         }
 287         if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
 288             pdev->device == 0x0015) {
 289                 xhci->quirks |= XHCI_RESET_ON_RESUME;
 290                 xhci->quirks |= XHCI_ZERO_64B_REGS;
 291         }
 292         if (pdev->vendor == PCI_VENDOR_ID_VIA)
 293                 xhci->quirks |= XHCI_RESET_ON_RESUME;
 294
 295         /* See https://bugzilla.kernel.org/show_bug.cgi?id=79511 */
 296         if (pdev->vendor == PCI_VENDOR_ID_VIA &&
 297                         pdev->device == 0x3432)
 298                 xhci->quirks |= XHCI_BROKEN_STREAMS;
 299
 300         if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) {
 301                 xhci->quirks |= XHCI_LPM_SUPPORT;
 302                 xhci->quirks |= XHCI_EP_CTX_BROKEN_DCS;
 303         }
 304
 305         if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
 306                 pdev->device == PCI_DEVICE_ID_ASMEDIA_1042_XHCI)
 307                 xhci->quirks |= XHCI_BROKEN_STREAMS;
 308         if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
 309                 pdev->device == PCI_DEVICE_ID_ASMEDIA_1042A_XHCI) {
 310                 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
 311                 xhci->quirks |= XHCI_NO_64BIT_SUPPORT;
 312         }
 313         if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
 314             (pdev->device == PCI_DEVICE_ID_ASMEDIA_1142_XHCI ||
 315              pdev->device == PCI_DEVICE_ID_ASMEDIA_2142_XHCI ||
 316              pdev->device == PCI_DEVICE_ID_ASMEDIA_3242_XHCI))
 317                 xhci->quirks |= XHCI_NO_64BIT_SUPPORT;
 318
 319         if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
 320                 pdev->device == PCI_DEVICE_ID_ASMEDIA_1042A_XHCI)
 321                 xhci->quirks |= XHCI_ASMEDIA_MODIFY_FLOWCONTROL;
 322
 323         if (pdev->vendor == PCI_VENDOR_ID_TI && pdev->device == 0x8241)
 324                 xhci->quirks |= XHCI_LIMIT_ENDPOINT_INTERVAL_7;
 325
 326         if ((pdev->vendor == PCI_VENDOR_ID_BROADCOM ||
 327              pdev->vendor == PCI_VENDOR_ID_CAVIUM) &&
 328              pdev->device == 0x9026)
 329                 xhci->quirks |= XHCI_RESET_PLL_ON_DISCONNECT;
 330
 331         if (pdev->vendor == PCI_VENDOR_ID_AMD &&
 332             (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_2 ||
 333              pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_4))
 334                 xhci->quirks |= XHCI_NO_SOFT_RETRY;
 335
 336         if (pdev->vendor == PCI_VENDOR_ID_AMD &&
 337             (pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_1 ||
 338             pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_2 ||
 339             pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_3 ||
 340             pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_4 ||
 341             pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_5 ||
 342             pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_6 ||
 343             pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_7 ||
 344             pdev->device == PCI_DEVICE_ID_AMD_YELLOW_CARP_XHCI_8))
 345                 xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
 346
 347         if (xhci->quirks & XHCI_RESET_ON_RESUME)
 348                 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
 349                                 "QUIRK: Resetting on resume");
 350 }
 351
 352 #ifdef CONFIG_ACPI
 353 static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev)
 354 {
 355         static const guid_t intel_dsm_guid =
 356                 GUID_INIT(0xac340cb7, 0xe901, 0x45bf,
 357                           0xb7, 0xe6, 0x2b, 0x34, 0xec, 0x93, 0x1e, 0x23);
 358         union acpi_object *obj;
 359
 360         obj = acpi_evaluate_dsm(ACPI_HANDLE(&dev->dev), &intel_dsm_guid, 3, 1,
 361                                 NULL);
 362         ACPI_FREE(obj);
 363 }
 364 #else
 365 static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) { }
 366 #endif /* CONFIG_ACPI */
 367
 368 /* called during probe() after chip reset completes */
 369 static int xhci_pci_setup(struct usb_hcd *hcd)
 370 {
 371         struct xhci_hcd         *xhci;
 372         struct pci_dev          *pdev = to_pci_dev(hcd->self.controller);
 373         int                     retval;
 374
 375         xhci = hcd_to_xhci(hcd);
 376         if (!xhci->sbrn)
 377                 pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn);
 378
 379         /* imod_interval is the interrupt moderation value in nanoseconds. */
 380         xhci->imod_interval = 40000;
 381
 382         retval = xhci_gen_setup(hcd, xhci_pci_quirks);
 383         if (retval)
 384                 return retval;
 385
 386         if (!usb_hcd_is_primary_hcd(hcd))
 387                 return 0;
 388
 389         if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
 390                 xhci_pme_acpi_rtd3_enable(pdev);
 391
 392         xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn);
 393
 394         /* Find any debug ports */
 395         return xhci_pci_reinit(xhci, pdev);
 396 }
 397
 398 /*
 399  * We need to register our own PCI probe function (instead of the USB core's
 400  * function) in order to create a second roothub under xHCI.
 401  */
 402 static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 403 {
 404         int retval;
 405         struct xhci_hcd *xhci;
 406         struct usb_hcd *hcd;
 407         struct xhci_driver_data *driver_data;
 408         struct reset_control *reset;
 409
 410         driver_data = (struct xhci_driver_data *)id->driver_data;
 411         if (driver_data && driver_data->quirks & XHCI_RENESAS_FW_QUIRK) {
 412                 retval = renesas_xhci_check_request_fw(dev, id);
 413                 if (retval)
 414                         return retval;
 415         }
 416
 417         reset = devm_reset_control_get_optional_exclusive(&dev->dev, NULL);
 418         if (IS_ERR(reset))
 419                 return PTR_ERR(reset);
 420         reset_control_reset(reset);
 421
 422         /* Prevent runtime suspending between USB-2 and USB-3 initialization */
 423         pm_runtime_get_noresume(&dev->dev);
 424
 425         /* Register the USB 2.0 roothub.
 426          * FIXME: USB core must know to register the USB 2.0 roothub first.
 427          * This is sort of silly, because we could just set the HCD driver flags
 428          * to say USB 2.0, but I'm not sure what the implications would be in
 429          * the other parts of the HCD code.
 430          */
 431         retval = usb_hcd_pci_probe(dev, id, &xhci_pci_hc_driver);
 432
 433         if (retval)
 434                 goto put_runtime_pm;
 435
 436         /* USB 2.0 roothub is stored in the PCI device now. */
 437         hcd = dev_get_drvdata(&dev->dev);
 438         xhci = hcd_to_xhci(hcd);
 439         xhci->reset = reset;
 440         xhci->shared_hcd = usb_create_shared_hcd(&xhci_pci_hc_driver, &dev->dev,
 441                                                  pci_name(dev), hcd);
 442         if (!xhci->shared_hcd) {
 443                 retval = -ENOMEM;
 444                 goto dealloc_usb2_hcd;
 445         }
 446
 447         retval = xhci_ext_cap_init(xhci);
 448         if (retval)
 449                 goto put_usb3_hcd;
 450
 451         retval = usb_add_hcd(xhci->shared_hcd, dev->irq,
 452                         IRQF_SHARED);
 453         if (retval)
 454                 goto put_usb3_hcd;
 455         /* Roothub already marked as USB 3.0 speed */
 456
 457         if (!(xhci->quirks & XHCI_BROKEN_STREAMS) &&
 458                         HCC_MAX_PSA(xhci->hcc_params) >= 4)
 459                 xhci->shared_hcd->can_do_streams = 1;
 460
 461         /* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */
 462         pm_runtime_put_noidle(&dev->dev);
 463
 464         if (xhci->quirks & XHCI_DEFAULT_PM_RUNTIME_ALLOW)
 465                 pm_runtime_allow(&dev->dev);
 466
 467         return 0;
 468
 469 put_usb3_hcd:
 470         usb_put_hcd(xhci->shared_hcd);
 471 dealloc_usb2_hcd:
 472         usb_hcd_pci_remove(dev);
 473 put_runtime_pm:
 474         pm_runtime_put_noidle(&dev->dev);
 475         return retval;
 476 }
 477
 478 static void xhci_pci_remove(struct pci_dev *dev)
 479 {
 480         struct xhci_hcd *xhci;
 481
 482         xhci = hcd_to_xhci(pci_get_drvdata(dev));
 483
 484         xhci->xhc_state |= XHCI_STATE_REMOVING;
 485
 486         if (xhci->quirks & XHCI_DEFAULT_PM_RUNTIME_ALLOW)
 487                 pm_runtime_forbid(&dev->dev);
 488
 489         if (xhci->shared_hcd) {
 490                 usb_remove_hcd(xhci->shared_hcd);
 491                 usb_put_hcd(xhci->shared_hcd);
 492                 xhci->shared_hcd = NULL;
 493         }
 494
 495         /* Workaround for spurious wakeups at shutdown with HSW */
 496         if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)
 497                 pci_set_power_state(dev, PCI_D3hot);
 498
 499         usb_hcd_pci_remove(dev);
 500 }
 501
 502 #ifdef CONFIG_PM
 503 /*
 504  * In some Intel xHCI controllers, in order to get D3 working,
 505  * through a vendor specific SSIC CONFIG register at offset 0x883c,
 506  * SSIC PORT need to be marked as "unused" before putting xHCI
 507  * into D3. After D3 exit, the SSIC port need to be marked as "used".
 508  * Without this change, xHCI might not enter D3 state.
 509  */
 510 static void xhci_ssic_port_unused_quirk(struct usb_hcd *hcd, bool suspend)
 511 {
 512         struct xhci_hcd *xhci = hcd_to_xhci(hcd);
 513         u32 val;
 514         void __iomem *reg;
 515         int i;
 516
 517         for (i = 0; i < SSIC_PORT_NUM; i++) {
 518                 reg = (void __iomem *) xhci->cap_regs +
 519                                 SSIC_PORT_CFG2 +
 520                                 i * SSIC_PORT_CFG2_OFFSET;
 521
 522                 /* Notify SSIC that SSIC profile programming is not done. */
 523                 val = readl(reg) & ~PROG_DONE;
 524                 writel(val, reg);
 525
 526                 /* Mark SSIC port as unused(suspend) or used(resume) */
 527                 val = readl(reg);
 528                 if (suspend)
 529                         val |= SSIC_PORT_UNUSED;
 530                 else
 531                         val &= ~SSIC_PORT_UNUSED;
 532                 writel(val, reg);
 533
 534                 /* Notify SSIC that SSIC profile programming is done */
 535                 val = readl(reg) | PROG_DONE;
 536                 writel(val, reg);
 537                 readl(reg);
 538         }
 539 }
 540
 541 /*
 542  * Make sure PME works on some Intel xHCI controllers by writing 1 to clear
 543  * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4
 544  */
 545 static void xhci_pme_quirk(struct usb_hcd *hcd)
 546 {
 547         struct xhci_hcd *xhci = hcd_to_xhci(hcd);
 548         void __iomem *reg;
 549         u32 val;
 550
 551         reg = (void __iomem *) xhci->cap_regs + 0x80a4;
 552         val = readl(reg);
 553         writel(val | BIT(28), reg);
 554         readl(reg);
 555 }
 556
 557 static void xhci_sparse_control_quirk(struct usb_hcd *hcd)
 558 {
 559         u32 reg;
 560
 561         reg = readl(hcd->regs + SPARSE_CNTL_ENABLE);
 562         reg &= ~BIT(SPARSE_DISABLE_BIT);
 563         writel(reg, hcd->regs + SPARSE_CNTL_ENABLE);
 564 }
 565
 566 static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
 567 {
 568         struct xhci_hcd *xhci = hcd_to_xhci(hcd);
 569         struct pci_dev          *pdev = to_pci_dev(hcd->self.controller);
 570         int                     ret;
 571
 572         /*
 573          * Systems with the TI redriver that loses port status change events
 574          * need to have the registers polled during D3, so avoid D3cold.
 575          */
 576         if (xhci->quirks & (XHCI_COMP_MODE_QUIRK | XHCI_BROKEN_D3COLD))
 577                 pci_d3cold_disable(pdev);
 578
 579         if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
 580                 xhci_pme_quirk(hcd);
 581
 582         if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
 583                 xhci_ssic_port_unused_quirk(hcd, true);
 584
 585         if (xhci->quirks & XHCI_DISABLE_SPARSE)
 586                 xhci_sparse_control_quirk(hcd);
 587
 588         ret = xhci_suspend(xhci, do_wakeup);
 589         if (ret && (xhci->quirks & XHCI_SSIC_PORT_UNUSED))
 590                 xhci_ssic_port_unused_quirk(hcd, false);
 591
 592         return ret;
 593 }
 594
 595 static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
 596 {
 597         struct xhci_hcd         *xhci = hcd_to_xhci(hcd);
 598         struct pci_dev          *pdev = to_pci_dev(hcd->self.controller);
 599         int                     retval = 0;
 600
 601         reset_control_reset(xhci->reset);
 602
 603         /* The BIOS on systems with the Intel Panther Point chipset may or may
 604          * not support xHCI natively.  That means that during system resume, it
 605          * may switch the ports back to EHCI so that users can use their
 606          * keyboard to select a kernel from GRUB after resume from hibernate.
 607          *
 608          * The BIOS is supposed to remember whether the OS had xHCI ports
 609          * enabled before resume, and switch the ports back to xHCI when the
 610          * BIOS/OS semaphore is written, but we all know we can't trust BIOS
 611          * writers.
 612          *
 613          * Unconditionally switch the ports back to xHCI after a system resume.
 614          * It should not matter whether the EHCI or xHCI controller is
 615          * resumed first. It's enough to do the switchover in xHCI because
 616          * USB core won't notice anything as the hub driver doesn't start
 617          * running again until after all the devices (including both EHCI and
 618          * xHCI host controllers) have been resumed.
 619          */
 620
 621         if (pdev->vendor == PCI_VENDOR_ID_INTEL)
 622                 usb_enable_intel_xhci_ports(pdev);
 623
 624         if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
 625                 xhci_ssic_port_unused_quirk(hcd, false);
 626
 627         if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
 628                 xhci_pme_quirk(hcd);
 629
 630         retval = xhci_resume(xhci, hibernated);
 631         return retval;
 632 }
 633
 634 static void xhci_pci_shutdown(struct usb_hcd *hcd)
 635 {
 636         struct xhci_hcd         *xhci = hcd_to_xhci(hcd);
 637         struct pci_dev          *pdev = to_pci_dev(hcd->self.controller);
 638
 639         xhci_shutdown(hcd);
 640
 641         /* Yet another workaround for spurious wakeups at shutdown with HSW */
 642         if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)
 643                 pci_set_power_state(pdev, PCI_D3hot);
 644 }
 645 #endif /* CONFIG_PM */
 646
 647 /*-------------------------------------------------------------------------*/
 648
 649 static const struct xhci_driver_data reneses_data = {
 650         .quirks  = XHCI_RENESAS_FW_QUIRK,
 651         .firmware = "renesas_usb_fw.mem",
 652 };
 653
 654 /* PCI driver selection metadata; PCI hotplugging uses this */
 655 static const struct pci_device_id pci_ids[] = {
 656         { PCI_DEVICE(0x1912, 0x0014),
 657                 .driver_data =  (unsigned long)&reneses_data,
 658         },
 659         { PCI_DEVICE(0x1912, 0x0015),
 660                 .driver_data =  (unsigned long)&reneses_data,
 661         },
 662         /* handle any USB 3.0 xHCI controller */
 663         { PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0),
 664         },
 665         { /* end: all zeroes */ }
 666 };
 667 MODULE_DEVICE_TABLE(pci, pci_ids);
 668
 669 /*
 670  * Without CONFIG_USB_XHCI_PCI_RENESAS renesas_xhci_check_request_fw() won't
 671  * load firmware, so don't encumber the xhci-pci driver with it.
 672  */
 673 #if IS_ENABLED(CONFIG_USB_XHCI_PCI_RENESAS)
 674 MODULE_FIRMWARE("renesas_usb_fw.mem");
 675 #endif
 676
 677 /* pci driver glue; this is a "new style" PCI driver module */
 678 static struct pci_driver xhci_pci_driver = {
 679         .name =         hcd_name,
 680         .id_table =     pci_ids,
 681
 682         .probe =        xhci_pci_probe,
 683         .remove =       xhci_pci_remove,
 684         /* suspend and resume implemented later */
 685
 686         .shutdown =     usb_hcd_pci_shutdown,
 687 #ifdef CONFIG_PM
 688         .driver = {
 689                 .pm = &usb_hcd_pci_pm_ops
 690         },
 691 #endif
 692 };
 693
 694 static int __init xhci_pci_init(void)
 695 {
 696         xhci_init_driver(&xhci_pci_hc_driver, &xhci_pci_overrides);
 697 #ifdef CONFIG_PM
 698         xhci_pci_hc_driver.pci_suspend = xhci_pci_suspend;
 699         xhci_pci_hc_driver.pci_resume = xhci_pci_resume;
 700         xhci_pci_hc_driver.shutdown = xhci_pci_shutdown;
 701 #endif
 702         return pci_register_driver(&xhci_pci_driver);
 703 }
 704 module_init(xhci_pci_init);
 705
 706 static void __exit xhci_pci_exit(void)
 707 {
 708         pci_unregister_driver(&xhci_pci_driver);
 709 }
 710 module_exit(xhci_pci_exit);
 711
 712 MODULE_DESCRIPTION("xHCI PCI Host Controller Driver");
 713 MODULE_LICENSE("GPL");