ehci_pci.c

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    1 /*-
    2  * Copyright (c) 1998 The NetBSD Foundation, Inc.
    3  * All rights reserved.
    4  *
    5  * This code is derived from software contributed to The NetBSD Foundation
    6  * by Lennart Augustsson (augustss@carlstedt.se) at
    7  * Carlstedt Research & Technology.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   28  * POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD: releng/9.0/sys/dev/usb/controller/ehci_pci.c 220558 2011-04-12 07:49:11Z hselasky $");
   33 
   34 /*
   35  * USB Enhanced Host Controller Driver, a.k.a. USB 2.0 controller.
   36  *
   37  * The EHCI 1.0 spec can be found at
   38  * http://developer.intel.com/technology/usb/download/ehci-r10.pdf
   39  * and the USB 2.0 spec at
   40  * http://www.usb.org/developers/docs/usb_20.zip
   41  */
   42 
   43 /* The low level controller code for EHCI has been split into
   44  * PCI probes and EHCI specific code. This was done to facilitate the
   45  * sharing of code between *BSD's
   46  */
   47 
   48 #include <sys/stdint.h>
   49 #include <sys/stddef.h>
   50 #include <sys/param.h>
   51 #include <sys/queue.h>
   52 #include <sys/types.h>
   53 #include <sys/systm.h>
   54 #include <sys/kernel.h>
   55 #include <sys/bus.h>
   56 #include <sys/module.h>
   57 #include <sys/lock.h>
   58 #include <sys/mutex.h>
   59 #include <sys/condvar.h>
   60 #include <sys/sysctl.h>
   61 #include <sys/sx.h>
   62 #include <sys/unistd.h>
   63 #include <sys/callout.h>
   64 #include <sys/malloc.h>
   65 #include <sys/priv.h>
   66 
   67 #include <dev/usb/usb.h>
   68 #include <dev/usb/usbdi.h>
   69 
   70 #include <dev/usb/usb_core.h>
   71 #include <dev/usb/usb_busdma.h>
   72 #include <dev/usb/usb_process.h>
   73 #include <dev/usb/usb_util.h>
   74 
   75 #include <dev/usb/usb_controller.h>
   76 #include <dev/usb/usb_bus.h>
   77 #include <dev/usb/usb_pci.h>
   78 #include <dev/usb/controller/ehci.h>
   79 #include <dev/usb/controller/ehcireg.h>
   80 
   81 #define PCI_EHCI_VENDORID_ACERLABS      0x10b9
   82 #define PCI_EHCI_VENDORID_AMD           0x1022
   83 #define PCI_EHCI_VENDORID_APPLE         0x106b
   84 #define PCI_EHCI_VENDORID_ATI           0x1002
   85 #define PCI_EHCI_VENDORID_CMDTECH       0x1095
   86 #define PCI_EHCI_VENDORID_INTEL         0x8086
   87 #define PCI_EHCI_VENDORID_NEC           0x1033
   88 #define PCI_EHCI_VENDORID_OPTI          0x1045
   89 #define PCI_EHCI_VENDORID_PHILIPS       0x1131
   90 #define PCI_EHCI_VENDORID_SIS           0x1039
   91 #define PCI_EHCI_VENDORID_NVIDIA        0x12D2
   92 #define PCI_EHCI_VENDORID_NVIDIA2       0x10DE
   93 #define PCI_EHCI_VENDORID_VIA           0x1106
   94 
   95 static void ehci_pci_takecontroller(device_t self);
   96 
   97 static device_probe_t ehci_pci_probe;
   98 static device_attach_t ehci_pci_attach;
   99 static device_detach_t ehci_pci_detach;
  100 static device_suspend_t ehci_pci_suspend;
  101 static device_resume_t ehci_pci_resume;
  102 static device_shutdown_t ehci_pci_shutdown;
  103 
  104 static int
  105 ehci_pci_suspend(device_t self)
  106 {
  107         ehci_softc_t *sc = device_get_softc(self);
  108         int err;
  109 
  110         err = bus_generic_suspend(self);
  111         if (err)
  112                 return (err);
  113         ehci_suspend(sc);
  114         return (0);
  115 }
  116 
  117 static int
  118 ehci_pci_resume(device_t self)
  119 {
  120         ehci_softc_t *sc = device_get_softc(self);
  121 
  122         ehci_pci_takecontroller(self);
  123         ehci_resume(sc);
  124 
  125         bus_generic_resume(self);
  126 
  127         return (0);
  128 }
  129 
  130 static int
  131 ehci_pci_shutdown(device_t self)
  132 {
  133         ehci_softc_t *sc = device_get_softc(self);
  134         int err;
  135 
  136         err = bus_generic_shutdown(self);
  137         if (err)
  138                 return (err);
  139         ehci_shutdown(sc);
  140 
  141         return (0);
  142 }
  143 
  144 static const char *
  145 ehci_pci_match(device_t self)
  146 {
  147         uint32_t device_id = pci_get_devid(self);
  148 
  149         switch (device_id) {
  150         case 0x268c8086:
  151                 return ("Intel 63XXESB USB 2.0 controller");
  152 
  153         case 0x523910b9:
  154                 return "ALi M5239 USB 2.0 controller";
  155 
  156         case 0x10227463:
  157                 return "AMD 8111 USB 2.0 controller";
  158 
  159         case 0x20951022:
  160                 return ("AMD CS5536 (Geode) USB 2.0 controller");
  161 
  162         case 0x43451002:
  163                 return "ATI SB200 USB 2.0 controller";
  164         case 0x43731002:
  165                 return "ATI SB400 USB 2.0 controller";
  166 
  167         case 0x25ad8086:
  168                 return "Intel 6300ESB USB 2.0 controller";
  169         case 0x24cd8086:
  170                 return "Intel 82801DB/L/M (ICH4) USB 2.0 controller";
  171         case 0x24dd8086:
  172                 return "Intel 82801EB/R (ICH5) USB 2.0 controller";
  173         case 0x265c8086:
  174                 return "Intel 82801FB (ICH6) USB 2.0 controller";
  175         case 0x27cc8086:
  176                 return "Intel 82801GB/R (ICH7) USB 2.0 controller";
  177 
  178         case 0x28368086:
  179                 return "Intel 82801H (ICH8) USB 2.0 controller USB2-A";
  180         case 0x283a8086:
  181                 return "Intel 82801H (ICH8) USB 2.0 controller USB2-B";
  182         case 0x293a8086:
  183                 return "Intel 82801I (ICH9) USB 2.0 controller";
  184         case 0x293c8086:
  185                 return "Intel 82801I (ICH9) USB 2.0 controller";
  186         case 0x3a3a8086:
  187                 return "Intel 82801JI (ICH10) USB 2.0 controller USB-A";
  188         case 0x3a3c8086:
  189                 return "Intel 82801JI (ICH10) USB 2.0 controller USB-B";
  190         case 0x3b348086:
  191                 return ("Intel PCH USB 2.0 controller USB-A");
  192         case 0x3b3c8086:
  193                 return ("Intel PCH USB 2.0 controller USB-B");
  194 
  195         case 0x00e01033:
  196                 return ("NEC uPD 720100 USB 2.0 controller");
  197 
  198         case 0x006810de:
  199                 return "NVIDIA nForce2 USB 2.0 controller";
  200         case 0x008810de:
  201                 return "NVIDIA nForce2 Ultra 400 USB 2.0 controller";
  202         case 0x00d810de:
  203                 return "NVIDIA nForce3 USB 2.0 controller";
  204         case 0x00e810de:
  205                 return "NVIDIA nForce3 250 USB 2.0 controller";
  206         case 0x005b10de:
  207                 return "NVIDIA nForce4 USB 2.0 controller";
  208         case 0x036d10de:
  209                 return "NVIDIA nForce MCP55 USB 2.0 controller";
  210         case 0x03f210de:
  211                 return "NVIDIA nForce MCP61 USB 2.0 controller";
  212         case 0x0aa610de:
  213                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  214         case 0x0aa910de:
  215                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  216         case 0x0aaa10de:
  217                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  218 
  219         case 0x15621131:
  220                 return "Philips ISP156x USB 2.0 controller";
  221 
  222         case 0x31041106:
  223                 return ("VIA VT6202 USB 2.0 controller");
  224 
  225         default:
  226                 break;
  227         }
  228 
  229         if ((pci_get_class(self) == PCIC_SERIALBUS)
  230             && (pci_get_subclass(self) == PCIS_SERIALBUS_USB)
  231             && (pci_get_progif(self) == PCI_INTERFACE_EHCI)) {
  232                 return ("EHCI (generic) USB 2.0 controller");
  233         }
  234         return (NULL);                  /* dunno */
  235 }
  236 
  237 static int
  238 ehci_pci_probe(device_t self)
  239 {
  240         const char *desc = ehci_pci_match(self);
  241 
  242         if (desc) {
  243                 device_set_desc(self, desc);
  244                 return (0);
  245         } else {
  246                 return (ENXIO);
  247         }
  248 }
  249 
  250 static void
  251 ehci_pci_ati_quirk(device_t self, uint8_t is_sb700)
  252 {
  253         device_t smbdev;
  254         uint32_t val;
  255 
  256         if (is_sb700) {
  257                 /* Lookup SMBUS PCI device */
  258                 smbdev = pci_find_device(PCI_EHCI_VENDORID_ATI, 0x4385);
  259                 if (smbdev == NULL)
  260                         return;
  261                 val = pci_get_revid(smbdev);
  262                 if (val != 0x3a && val != 0x3b)
  263                         return;
  264         }
  265 
  266         /*
  267          * Note: this bit is described as reserved in SB700
  268          * Register Reference Guide.
  269          */
  270         val = pci_read_config(self, 0x53, 1);
  271         if (!(val & 0x8)) {
  272                 val |= 0x8;
  273                 pci_write_config(self, 0x53, val, 1);
  274                 device_printf(self, "AMD SB600/700 quirk applied\n");
  275         }
  276 }
  277 
  278 static void
  279 ehci_pci_via_quirk(device_t self)
  280 {
  281         uint32_t val;
  282 
  283         if ((pci_get_device(self) == 0x3104) && 
  284             ((pci_get_revid(self) & 0xf0) == 0x60)) {
  285                 /* Correct schedule sleep time to 10us */
  286                 val = pci_read_config(self, 0x4b, 1);
  287                 if (val & 0x20)
  288                         return;
  289                 pci_write_config(self, 0x4b, val, 1);
  290                 device_printf(self, "VIA-quirk applied\n");
  291         }
  292 }
  293 
  294 static int
  295 ehci_pci_attach(device_t self)
  296 {
  297         ehci_softc_t *sc = device_get_softc(self);
  298         int err;
  299         int rid;
  300 
  301         /* initialise some bus fields */
  302         sc->sc_bus.parent = self;
  303         sc->sc_bus.devices = sc->sc_devices;
  304         sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
  305 
  306         /* get all DMA memory */
  307         if (usb_bus_mem_alloc_all(&sc->sc_bus,
  308             USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
  309                 return (ENOMEM);
  310         }
  311 
  312         pci_enable_busmaster(self);
  313 
  314         switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) {
  315         case PCI_USB_REV_PRE_1_0:
  316         case PCI_USB_REV_1_0:
  317         case PCI_USB_REV_1_1:
  318                 /*
  319                  * NOTE: some EHCI USB controllers have the wrong USB
  320                  * revision number. It appears those controllers are
  321                  * fully compliant so we just ignore this value in
  322                  * some common cases.
  323                  */
  324                 device_printf(self, "pre-2.0 USB revision (ignored)\n");
  325                 /* fallthrough */
  326         case PCI_USB_REV_2_0:
  327                 break;
  328         default:
  329                 /* Quirk for Parallels Desktop 4.0 */
  330                 device_printf(self, "USB revision is unknown. Assuming v2.0.\n");
  331                 break;
  332         }
  333 
  334         rid = PCI_CBMEM;
  335         sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
  336             RF_ACTIVE);
  337         if (!sc->sc_io_res) {
  338                 device_printf(self, "Could not map memory\n");
  339                 goto error;
  340         }
  341         sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
  342         sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
  343         sc->sc_io_size = rman_get_size(sc->sc_io_res);
  344 
  345         rid = 0;
  346         sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
  347             RF_SHAREABLE | RF_ACTIVE);
  348         if (sc->sc_irq_res == NULL) {
  349                 device_printf(self, "Could not allocate irq\n");
  350                 goto error;
  351         }
  352         sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
  353         if (!sc->sc_bus.bdev) {
  354                 device_printf(self, "Could not add USB device\n");
  355                 goto error;
  356         }
  357         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
  358 
  359         /*
  360          * ehci_pci_match will never return NULL if ehci_pci_probe
  361          * succeeded
  362          */
  363         device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self));
  364         switch (pci_get_vendor(self)) {
  365         case PCI_EHCI_VENDORID_ACERLABS:
  366                 sprintf(sc->sc_vendor, "AcerLabs");
  367                 break;
  368         case PCI_EHCI_VENDORID_AMD:
  369                 sprintf(sc->sc_vendor, "AMD");
  370                 break;
  371         case PCI_EHCI_VENDORID_APPLE:
  372                 sprintf(sc->sc_vendor, "Apple");
  373                 break;
  374         case PCI_EHCI_VENDORID_ATI:
  375                 sprintf(sc->sc_vendor, "ATI");
  376                 break;
  377         case PCI_EHCI_VENDORID_CMDTECH:
  378                 sprintf(sc->sc_vendor, "CMDTECH");
  379                 break;
  380         case PCI_EHCI_VENDORID_INTEL:
  381                 sprintf(sc->sc_vendor, "Intel");
  382                 break;
  383         case PCI_EHCI_VENDORID_NEC:
  384                 sprintf(sc->sc_vendor, "NEC");
  385                 break;
  386         case PCI_EHCI_VENDORID_OPTI:
  387                 sprintf(sc->sc_vendor, "OPTi");
  388                 break;
  389         case PCI_EHCI_VENDORID_PHILIPS:
  390                 sprintf(sc->sc_vendor, "Philips");
  391                 break;
  392         case PCI_EHCI_VENDORID_SIS:
  393                 sprintf(sc->sc_vendor, "SiS");
  394                 break;
  395         case PCI_EHCI_VENDORID_NVIDIA:
  396         case PCI_EHCI_VENDORID_NVIDIA2:
  397                 sprintf(sc->sc_vendor, "nVidia");
  398                 break;
  399         case PCI_EHCI_VENDORID_VIA:
  400                 sprintf(sc->sc_vendor, "VIA");
  401                 break;
  402         default:
  403                 if (bootverbose)
  404                         device_printf(self, "(New EHCI DeviceId=0x%08x)\n",
  405                             pci_get_devid(self));
  406                 sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self));
  407         }
  408 
  409 #if (__FreeBSD_version >= 700031)
  410         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  411             NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
  412 #else
  413         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  414             (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
  415 #endif
  416         if (err) {
  417                 device_printf(self, "Could not setup irq, %d\n", err);
  418                 sc->sc_intr_hdl = NULL;
  419                 goto error;
  420         }
  421         ehci_pci_takecontroller(self);
  422 
  423         /* Undocumented quirks taken from Linux */
  424 
  425         switch (pci_get_vendor(self)) {
  426         case PCI_EHCI_VENDORID_ATI:
  427                 /* SB600 and SB700 EHCI quirk */
  428                 switch (pci_get_device(self)) {
  429                 case 0x4386:
  430                         ehci_pci_ati_quirk(self, 0);
  431                         break;
  432                 case 0x4396:
  433                         ehci_pci_ati_quirk(self, 1);
  434                         break;
  435                 default:
  436                         break;
  437                 }
  438                 break;
  439 
  440         case PCI_EHCI_VENDORID_VIA:
  441                 ehci_pci_via_quirk(self);
  442                 break;
  443 
  444         default:
  445                 break;
  446         }
  447 
  448         /* Dropped interrupts workaround */
  449         switch (pci_get_vendor(self)) {
  450         case PCI_EHCI_VENDORID_ATI:
  451         case PCI_EHCI_VENDORID_VIA:
  452                 sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG;
  453                 if (bootverbose)
  454                         device_printf(self,
  455                             "Dropped interrupts workaround enabled\n");
  456                 break;
  457         default:
  458                 break;
  459         }
  460 
  461         /* Doorbell feature workaround */
  462         switch (pci_get_vendor(self)) {
  463         case PCI_EHCI_VENDORID_NVIDIA:
  464         case PCI_EHCI_VENDORID_NVIDIA2:
  465                 sc->sc_flags |= EHCI_SCFLG_IAADBUG;
  466                 if (bootverbose)
  467                         device_printf(self,
  468                             "Doorbell workaround enabled\n");
  469                 break;
  470         default:
  471                 break;
  472         }
  473 
  474         err = ehci_init(sc);
  475         if (!err) {
  476                 err = device_probe_and_attach(sc->sc_bus.bdev);
  477         }
  478         if (err) {
  479                 device_printf(self, "USB init failed err=%d\n", err);
  480                 goto error;
  481         }
  482         return (0);
  483 
  484 error:
  485         ehci_pci_detach(self);
  486         return (ENXIO);
  487 }
  488 
  489 static int
  490 ehci_pci_detach(device_t self)
  491 {
  492         ehci_softc_t *sc = device_get_softc(self);
  493         device_t bdev;
  494 
  495         if (sc->sc_bus.bdev) {
  496                 bdev = sc->sc_bus.bdev;
  497                 device_detach(bdev);
  498                 device_delete_child(self, bdev);
  499         }
  500         /* during module unload there are lots of children leftover */
  501         device_delete_all_children(self);
  502 
  503         pci_disable_busmaster(self);
  504 
  505         if (sc->sc_irq_res && sc->sc_intr_hdl) {
  506                 /*
  507                  * only call ehci_detach() after ehci_init()
  508                  */
  509                 ehci_detach(sc);
  510 
  511                 int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
  512 
  513                 if (err)
  514                         /* XXX or should we panic? */
  515                         device_printf(self, "Could not tear down irq, %d\n",
  516                             err);
  517                 sc->sc_intr_hdl = NULL;
  518         }
  519         if (sc->sc_irq_res) {
  520                 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
  521                 sc->sc_irq_res = NULL;
  522         }
  523         if (sc->sc_io_res) {
  524                 bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM,
  525                     sc->sc_io_res);
  526                 sc->sc_io_res = NULL;
  527         }
  528         usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
  529 
  530         return (0);
  531 }
  532 
  533 static void
  534 ehci_pci_takecontroller(device_t self)
  535 {
  536         ehci_softc_t *sc = device_get_softc(self);
  537         uint32_t cparams;
  538         uint32_t eec;
  539         uint16_t to;
  540         uint8_t eecp;
  541         uint8_t bios_sem;
  542 
  543         cparams = EREAD4(sc, EHCI_HCCPARAMS);
  544 
  545         /* Synchronise with the BIOS if it owns the controller. */
  546         for (eecp = EHCI_HCC_EECP(cparams); eecp != 0;
  547             eecp = EHCI_EECP_NEXT(eec)) {
  548                 eec = pci_read_config(self, eecp, 4);
  549                 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) {
  550                         continue;
  551                 }
  552                 bios_sem = pci_read_config(self, eecp +
  553                     EHCI_LEGSUP_BIOS_SEM, 1);
  554                 if (bios_sem == 0) {
  555                         continue;
  556                 }
  557                 device_printf(sc->sc_bus.bdev, "waiting for BIOS "
  558                     "to give up control\n");
  559                 pci_write_config(self, eecp +
  560                     EHCI_LEGSUP_OS_SEM, 1, 1);
  561                 to = 500;
  562                 while (1) {
  563                         bios_sem = pci_read_config(self, eecp +
  564                             EHCI_LEGSUP_BIOS_SEM, 1);
  565                         if (bios_sem == 0)
  566                                 break;
  567 
  568                         if (--to == 0) {
  569                                 device_printf(sc->sc_bus.bdev,
  570                                     "timed out waiting for BIOS\n");
  571                                 break;
  572                         }
  573                         usb_pause_mtx(NULL, hz / 100);  /* wait 10ms */
  574                 }
  575         }
  576 }
  577 
  578 static driver_t ehci_driver =
  579 {
  580         .name = "ehci",
  581         .methods = (device_method_t[]){
  582                 /* device interface */
  583                 DEVMETHOD(device_probe, ehci_pci_probe),
  584                 DEVMETHOD(device_attach, ehci_pci_attach),
  585                 DEVMETHOD(device_detach, ehci_pci_detach),
  586                 DEVMETHOD(device_suspend, ehci_pci_suspend),
  587                 DEVMETHOD(device_resume, ehci_pci_resume),
  588                 DEVMETHOD(device_shutdown, ehci_pci_shutdown),
  589                 /* bus interface */
  590                 DEVMETHOD(bus_print_child, bus_generic_print_child),
  591 
  592                 {0, 0}
  593         },
  594         .size = sizeof(struct ehci_softc),
  595 };
  596 
  597 static devclass_t ehci_devclass;
  598 
  599 DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0);
  600 MODULE_DEPEND(ehci, usb, 1, 1, 1);
Cache object: fb9185eacd91876ab25cbdfce772405c
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FreeBSD/Linux Kernel Cross Reference sys/dev/usb/controller/ehci_pci.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/controller/ehci_pci.c
