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  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *        This product includes software developed by the NetBSD
   20  *        Foundation, Inc. and its contributors.
   21  * 4. Neither the name of The NetBSD Foundation nor the names of its
   22  *    contributors may be used to endorse or promote products derived
   23  *    from this software without specific prior written permission.
   24  *
   25  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   26  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   35  * POSSIBILITY OF SUCH DAMAGE.
   36  */
   37 
   38 #include <sys/cdefs.h>
   39 __FBSDID("$FreeBSD: releng/8.1/sys/dev/usb/controller/ehci_pci.c 206323 2010-04-06 23:30:02Z thompsa $");
   40 
   41 /*
   42  * USB Enhanced Host Controller Driver, a.k.a. USB 2.0 controller.
   43  *
   44  * The EHCI 1.0 spec can be found at
   45  * http://developer.intel.com/technology/usb/download/ehci-r10.pdf
   46  * and the USB 2.0 spec at
   47  * http://www.usb.org/developers/docs/usb_20.zip
   48  */
   49 
   50 /* The low level controller code for EHCI has been split into
   51  * PCI probes and EHCI specific code. This was done to facilitate the
   52  * sharing of code between *BSD's
   53  */
   54 
   55 #include <sys/stdint.h>
   56 #include <sys/stddef.h>
   57 #include <sys/param.h>
   58 #include <sys/queue.h>
   59 #include <sys/types.h>
   60 #include <sys/systm.h>
   61 #include <sys/kernel.h>
   62 #include <sys/bus.h>
   63 #include <sys/linker_set.h>
   64 #include <sys/module.h>
   65 #include <sys/lock.h>
   66 #include <sys/mutex.h>
   67 #include <sys/condvar.h>
   68 #include <sys/sysctl.h>
   69 #include <sys/sx.h>
   70 #include <sys/unistd.h>
   71 #include <sys/callout.h>
   72 #include <sys/malloc.h>
   73 #include <sys/priv.h>
   74 
   75 #include <dev/usb/usb.h>
   76 #include <dev/usb/usbdi.h>
   77 
   78 #include <dev/usb/usb_core.h>
   79 #include <dev/usb/usb_busdma.h>
   80 #include <dev/usb/usb_process.h>
   81 #include <dev/usb/usb_util.h>
   82 
   83 #include <dev/usb/usb_controller.h>
   84 #include <dev/usb/usb_bus.h>
   85 #include <dev/usb/usb_pci.h>
   86 #include <dev/usb/controller/ehci.h>
   87 #include <dev/usb/controller/ehcireg.h>
   88 
   89 #define PCI_EHCI_VENDORID_ACERLABS      0x10b9
   90 #define PCI_EHCI_VENDORID_AMD           0x1022
   91 #define PCI_EHCI_VENDORID_APPLE         0x106b
   92 #define PCI_EHCI_VENDORID_ATI           0x1002
   93 #define PCI_EHCI_VENDORID_CMDTECH       0x1095
   94 #define PCI_EHCI_VENDORID_INTEL         0x8086
   95 #define PCI_EHCI_VENDORID_NEC           0x1033
   96 #define PCI_EHCI_VENDORID_OPTI          0x1045
   97 #define PCI_EHCI_VENDORID_PHILIPS       0x1131
   98 #define PCI_EHCI_VENDORID_SIS           0x1039
   99 #define PCI_EHCI_VENDORID_NVIDIA        0x12D2
  100 #define PCI_EHCI_VENDORID_NVIDIA2       0x10DE
  101 #define PCI_EHCI_VENDORID_VIA           0x1106
  102 
  103 #define PCI_EHCI_BASE_REG       0x10
  104 
  105 static void ehci_pci_takecontroller(device_t self);
  106 
  107 static device_probe_t ehci_pci_probe;
  108 static device_attach_t ehci_pci_attach;
  109 static device_detach_t ehci_pci_detach;
  110 static device_suspend_t ehci_pci_suspend;
  111 static device_resume_t ehci_pci_resume;
  112 static device_shutdown_t ehci_pci_shutdown;
  113 
  114 static int
  115 ehci_pci_suspend(device_t self)
  116 {
  117         ehci_softc_t *sc = device_get_softc(self);
  118         int err;
  119 
  120         err = bus_generic_suspend(self);
  121         if (err)
  122                 return (err);
  123         ehci_suspend(sc);
  124         return (0);
  125 }
  126 
  127 static int
  128 ehci_pci_resume(device_t self)
  129 {
  130         ehci_softc_t *sc = device_get_softc(self);
  131 
  132         ehci_pci_takecontroller(self);
  133         ehci_resume(sc);
  134 
  135         bus_generic_resume(self);
  136 
  137         return (0);
  138 }
  139 
  140 static int
  141 ehci_pci_shutdown(device_t self)
  142 {
  143         ehci_softc_t *sc = device_get_softc(self);
  144         int err;
  145 
  146         err = bus_generic_shutdown(self);
  147         if (err)
  148                 return (err);
  149         ehci_shutdown(sc);
  150 
  151         return (0);
  152 }
  153 
  154 static const char *
  155 ehci_pci_match(device_t self)
  156 {
  157         uint32_t device_id = pci_get_devid(self);
  158 
  159         switch (device_id) {
  160         case 0x268c8086:
  161                 return ("Intel 63XXESB USB 2.0 controller");
  162 
  163         case 0x523910b9:
  164                 return "ALi M5239 USB 2.0 controller";
  165 
  166         case 0x10227463:
  167                 return "AMD 8111 USB 2.0 controller";
  168 
  169         case 0x20951022:
  170                 return ("AMD CS5536 (Geode) USB 2.0 controller");
  171 
  172         case 0x43451002:
  173                 return "ATI SB200 USB 2.0 controller";
  174         case 0x43731002:
  175                 return "ATI SB400 USB 2.0 controller";
  176 
  177         case 0x25ad8086:
  178                 return "Intel 6300ESB USB 2.0 controller";
  179         case 0x24cd8086:
  180                 return "Intel 82801DB/L/M (ICH4) USB 2.0 controller";
  181         case 0x24dd8086:
  182                 return "Intel 82801EB/R (ICH5) USB 2.0 controller";
  183         case 0x265c8086:
  184                 return "Intel 82801FB (ICH6) USB 2.0 controller";
  185         case 0x27cc8086:
  186                 return "Intel 82801GB/R (ICH7) USB 2.0 controller";
  187 
  188         case 0x28368086:
  189                 return "Intel 82801H (ICH8) USB 2.0 controller USB2-A";
  190         case 0x283a8086:
  191                 return "Intel 82801H (ICH8) USB 2.0 controller USB2-B";
  192         case 0x293a8086:
  193                 return "Intel 82801I (ICH9) USB 2.0 controller";
  194         case 0x293c8086:
  195                 return "Intel 82801I (ICH9) USB 2.0 controller";
  196         case 0x3a3a8086:
  197                 return "Intel 82801JI (ICH10) USB 2.0 controller USB-A";
  198         case 0x3a3c8086:
  199                 return "Intel 82801JI (ICH10) USB 2.0 controller USB-B";
  200         case 0x3b348086:
  201                 return ("Intel PCH USB 2.0 controller USB-A");
  202         case 0x3b3c8086:
  203                 return ("Intel PCH USB 2.0 controller USB-B");
  204 
  205         case 0x00e01033:
  206                 return ("NEC uPD 720100 USB 2.0 controller");
  207 
  208         case 0x006810de:
  209                 return "NVIDIA nForce2 USB 2.0 controller";
  210         case 0x008810de:
  211                 return "NVIDIA nForce2 Ultra 400 USB 2.0 controller";
  212         case 0x00d810de:
  213                 return "NVIDIA nForce3 USB 2.0 controller";
  214         case 0x00e810de:
  215                 return "NVIDIA nForce3 250 USB 2.0 controller";
  216         case 0x005b10de:
  217                 return "NVIDIA nForce4 USB 2.0 controller";
  218         case 0x036d10de:
  219                 return "NVIDIA nForce MCP55 USB 2.0 controller";
  220         case 0x03f210de:
  221                 return "NVIDIA nForce MCP61 USB 2.0 controller";
  222         case 0x0aa610de:
  223                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  224         case 0x0aa910de:
  225                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  226         case 0x0aaa10de:
  227                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  228 
  229         case 0x15621131:
  230                 return "Philips ISP156x USB 2.0 controller";
  231 
  232         case 0x31041106:
  233                 return ("VIA VT6202 USB 2.0 controller");
  234 
  235         default:
  236                 break;
  237         }
  238 
  239         if ((pci_get_class(self) == PCIC_SERIALBUS)
  240             && (pci_get_subclass(self) == PCIS_SERIALBUS_USB)
  241             && (pci_get_progif(self) == PCI_INTERFACE_EHCI)) {
  242                 return ("EHCI (generic) USB 2.0 controller");
  243         }
  244         return (NULL);                  /* dunno */
  245 }
  246 
  247 static int
  248 ehci_pci_probe(device_t self)
  249 {
  250         const char *desc = ehci_pci_match(self);
  251 
  252         if (desc) {
  253                 device_set_desc(self, desc);
  254                 return (0);
  255         } else {
  256                 return (ENXIO);
  257         }
  258 }
  259 
  260 static void
  261 ehci_pci_ati_quirk(device_t self, uint8_t is_sb700)
  262 {
  263         device_t smbdev;
  264         uint32_t val;
  265 
  266         if (is_sb700) {
  267                 /* Lookup SMBUS PCI device */
  268                 smbdev = pci_find_device(PCI_EHCI_VENDORID_ATI, 0x4385);
  269                 if (smbdev == NULL)
  270                         return;
  271                 val = pci_get_revid(smbdev);
  272                 if (val != 0x3a && val != 0x3b)
  273                         return;
  274         }
  275 
  276         /*
  277          * Note: this bit is described as reserved in SB700
  278          * Register Reference Guide.
  279          */
  280         val = pci_read_config(self, 0x53, 1);
  281         if (!(val & 0x8)) {
  282                 val |= 0x8;
  283                 pci_write_config(self, 0x53, val, 1);
  284                 device_printf(self, "AMD SB600/700 quirk applied\n");
  285         }
  286 }
  287 
  288 static void
  289 ehci_pci_via_quirk(device_t self)
  290 {
  291         uint32_t val;
  292 
  293         if ((pci_get_device(self) == 0x3104) && 
  294             ((pci_get_revid(self) & 0xf0) == 0x60)) {
  295                 /* Correct schedule sleep time to 10us */
  296                 val = pci_read_config(self, 0x4b, 1);
  297                 if (val & 0x20)
  298                         return;
  299                 pci_write_config(self, 0x4b, val, 1);
  300                 device_printf(self, "VIA-quirk applied\n");
  301         }
  302 }
  303 
  304 static int
  305 ehci_pci_attach(device_t self)
  306 {
  307         ehci_softc_t *sc = device_get_softc(self);
  308         int err;
  309         int rid;
  310 
  311         /* initialise some bus fields */
  312         sc->sc_bus.parent = self;
  313         sc->sc_bus.devices = sc->sc_devices;
  314         sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
  315 
  316         /* get all DMA memory */
  317         if (usb_bus_mem_alloc_all(&sc->sc_bus,
  318             USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
  319                 return (ENOMEM);
  320         }
  321 
  322         pci_enable_busmaster(self);
  323 
  324         switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) {
  325         case PCI_USB_REV_PRE_1_0:
  326         case PCI_USB_REV_1_0:
  327         case PCI_USB_REV_1_1:
  328                 /*
  329                  * NOTE: some EHCI USB controllers have the wrong USB
  330                  * revision number. It appears those controllers are
  331                  * fully compliant so we just ignore this value in
  332                  * some common cases.
  333                  */
  334                 device_printf(self, "pre-2.0 USB revision (ignored)\n");
  335                 /* fallthrough */
  336         case PCI_USB_REV_2_0:
  337                 break;
  338         default:
  339                 /* Quirk for Parallels Desktop 4.0 */
  340                 device_printf(self, "USB revision is unknown. Assuming v2.0.\n");
  341                 break;
  342         }
  343 
  344         rid = PCI_CBMEM;
  345         sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
  346             RF_ACTIVE);
  347         if (!sc->sc_io_res) {
  348                 device_printf(self, "Could not map memory\n");
  349                 goto error;
  350         }
  351         sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
  352         sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
  353         sc->sc_io_size = rman_get_size(sc->sc_io_res);
  354 
  355         rid = 0;
  356         sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
  357             RF_SHAREABLE | RF_ACTIVE);
  358         if (sc->sc_irq_res == NULL) {
  359                 device_printf(self, "Could not allocate irq\n");
  360                 goto error;
  361         }
  362         sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
  363         if (!sc->sc_bus.bdev) {
  364                 device_printf(self, "Could not add USB device\n");
  365                 goto error;
  366         }
  367         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
  368 
  369         /*
  370          * ehci_pci_match will never return NULL if ehci_pci_probe
  371          * succeeded
  372          */
  373         device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self));
  374         switch (pci_get_vendor(self)) {
  375         case PCI_EHCI_VENDORID_ACERLABS:
  376                 sprintf(sc->sc_vendor, "AcerLabs");
  377                 break;
  378         case PCI_EHCI_VENDORID_AMD:
  379                 sprintf(sc->sc_vendor, "AMD");
  380                 break;
  381         case PCI_EHCI_VENDORID_APPLE:
  382                 sprintf(sc->sc_vendor, "Apple");
  383                 break;
  384         case PCI_EHCI_VENDORID_ATI:
  385                 sprintf(sc->sc_vendor, "ATI");
  386                 break;
  387         case PCI_EHCI_VENDORID_CMDTECH:
  388                 sprintf(sc->sc_vendor, "CMDTECH");
  389                 break;
  390         case PCI_EHCI_VENDORID_INTEL:
  391                 sprintf(sc->sc_vendor, "Intel");
  392                 break;
  393         case PCI_EHCI_VENDORID_NEC:
  394                 sprintf(sc->sc_vendor, "NEC");
  395                 break;
  396         case PCI_EHCI_VENDORID_OPTI:
  397                 sprintf(sc->sc_vendor, "OPTi");
  398                 break;
  399         case PCI_EHCI_VENDORID_PHILIPS:
  400                 sprintf(sc->sc_vendor, "Philips");
  401                 break;
  402         case PCI_EHCI_VENDORID_SIS:
  403                 sprintf(sc->sc_vendor, "SiS");
  404                 break;
  405         case PCI_EHCI_VENDORID_NVIDIA:
  406         case PCI_EHCI_VENDORID_NVIDIA2:
  407                 sprintf(sc->sc_vendor, "nVidia");
  408                 break;
  409         case PCI_EHCI_VENDORID_VIA:
  410                 sprintf(sc->sc_vendor, "VIA");
  411                 break;
  412         default:
  413                 if (bootverbose)
  414                         device_printf(self, "(New EHCI DeviceId=0x%08x)\n",
  415                             pci_get_devid(self));
  416                 sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self));
  417         }
  418 
  419 #if (__FreeBSD_version >= 700031)
  420         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  421             NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
  422 #else
  423         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  424             (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
  425 #endif
  426         if (err) {
  427                 device_printf(self, "Could not setup irq, %d\n", err);
  428                 sc->sc_intr_hdl = NULL;
  429                 goto error;
  430         }
  431         ehci_pci_takecontroller(self);
  432 
  433         /* Undocumented quirks taken from Linux */
  434 
  435         switch (pci_get_vendor(self)) {
  436         case PCI_EHCI_VENDORID_ATI:
  437                 /* SB600 and SB700 EHCI quirk */
  438                 switch (pci_get_device(self)) {
  439                 case 0x4386:
  440                         ehci_pci_ati_quirk(self, 0);
  441                         break;
  442                 case 0x4396:
  443                         ehci_pci_ati_quirk(self, 1);
  444                         break;
  445                 default:
  446                         break;
  447                 }
  448                 break;
  449 
  450         case PCI_EHCI_VENDORID_VIA:
  451                 ehci_pci_via_quirk(self);
  452                 break;
  453 
  454         default:
  455                 break;
  456         }
  457 
  458         /* Dropped interrupts workaround */
  459         switch (pci_get_vendor(self)) {
  460         case PCI_EHCI_VENDORID_ATI:
  461         case PCI_EHCI_VENDORID_VIA:
  462                 sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG;
  463                 if (bootverbose)
  464                         device_printf(self,
  465                             "Dropped interrupts workaround enabled\n");
  466                 break;
  467         default:
  468                 break;
  469         }
  470 
  471         /* Doorbell feature workaround */
  472         switch (pci_get_vendor(self)) {
  473         case PCI_EHCI_VENDORID_NVIDIA:
  474         case PCI_EHCI_VENDORID_NVIDIA2:
  475                 sc->sc_flags |= EHCI_SCFLG_IAADBUG;
  476                 if (bootverbose)
  477                         device_printf(self,
  478                             "Doorbell workaround enabled\n");
  479                 break;
  480         default:
  481                 break;
  482         }
  483 
  484         err = ehci_init(sc);
  485         if (!err) {
  486                 err = device_probe_and_attach(sc->sc_bus.bdev);
  487         }
  488         if (err) {
  489                 device_printf(self, "USB init failed err=%d\n", err);
  490                 goto error;
  491         }
  492         return (0);
  493 
  494 error:
  495         ehci_pci_detach(self);
  496         return (ENXIO);
  497 }
  498 
  499 static int
  500 ehci_pci_detach(device_t self)
  501 {
  502         ehci_softc_t *sc = device_get_softc(self);
  503         device_t bdev;
  504 
  505         if (sc->sc_bus.bdev) {
  506                 bdev = sc->sc_bus.bdev;
  507                 device_detach(bdev);
  508                 device_delete_child(self, bdev);
  509         }
  510         /* during module unload there are lots of children leftover */
  511         device_delete_all_children(self);
  512 
  513         pci_disable_busmaster(self);
  514 
  515         /*
  516          * disable interrupts that might have been switched on in ehci_init
  517          */
  518         if (sc->sc_io_res) {
  519                 EWRITE4(sc, EHCI_USBINTR, 0);
  520         }
  521         if (sc->sc_irq_res && sc->sc_intr_hdl) {
  522                 /*
  523                  * only call ehci_detach() after ehci_init()
  524                  */
  525                 ehci_detach(sc);
  526 
  527                 int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
  528 
  529                 if (err)
  530                         /* XXX or should we panic? */
  531                         device_printf(self, "Could not tear down irq, %d\n",
  532                             err);
  533                 sc->sc_intr_hdl = NULL;
  534         }
  535         if (sc->sc_irq_res) {
  536                 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
  537                 sc->sc_irq_res = NULL;
  538         }
  539         if (sc->sc_io_res) {
  540                 bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM,
  541                     sc->sc_io_res);
  542                 sc->sc_io_res = NULL;
  543         }
  544         usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
  545 
  546         return (0);
  547 }
  548 
  549 static void
  550 ehci_pci_takecontroller(device_t self)
  551 {
  552         ehci_softc_t *sc = device_get_softc(self);
  553         uint32_t cparams;
  554         uint32_t eec;
  555         uint16_t to;
  556         uint8_t eecp;
  557         uint8_t bios_sem;
  558 
  559         cparams = EREAD4(sc, EHCI_HCCPARAMS);
  560 
  561         /* Synchronise with the BIOS if it owns the controller. */
  562         for (eecp = EHCI_HCC_EECP(cparams); eecp != 0;
  563             eecp = EHCI_EECP_NEXT(eec)) {
  564                 eec = pci_read_config(self, eecp, 4);
  565                 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) {
  566                         continue;
  567                 }
  568                 bios_sem = pci_read_config(self, eecp +
  569                     EHCI_LEGSUP_BIOS_SEM, 1);
  570                 if (bios_sem == 0) {
  571                         continue;
  572                 }
  573                 device_printf(sc->sc_bus.bdev, "waiting for BIOS "
  574                     "to give up control\n");
  575                 pci_write_config(self, eecp +
  576                     EHCI_LEGSUP_OS_SEM, 1, 1);
  577                 to = 500;
  578                 while (1) {
  579                         bios_sem = pci_read_config(self, eecp +
  580                             EHCI_LEGSUP_BIOS_SEM, 1);
  581                         if (bios_sem == 0)
  582                                 break;
  583 
  584                         if (--to == 0) {
  585                                 device_printf(sc->sc_bus.bdev,
  586                                     "timed out waiting for BIOS\n");
  587                                 break;
  588                         }
  589                         usb_pause_mtx(NULL, hz / 100);  /* wait 10ms */
  590                 }
  591         }
  592 }
  593 
  594 static driver_t ehci_driver =
  595 {
  596         .name = "ehci",
  597         .methods = (device_method_t[]){
  598                 /* device interface */
  599                 DEVMETHOD(device_probe, ehci_pci_probe),
  600                 DEVMETHOD(device_attach, ehci_pci_attach),
  601                 DEVMETHOD(device_detach, ehci_pci_detach),
  602                 DEVMETHOD(device_suspend, ehci_pci_suspend),
  603                 DEVMETHOD(device_resume, ehci_pci_resume),
  604                 DEVMETHOD(device_shutdown, ehci_pci_shutdown),
  605                 /* bus interface */
  606                 DEVMETHOD(bus_print_child, bus_generic_print_child),
  607 
  608                 {0, 0}
  609         },
  610         .size = sizeof(struct ehci_softc),
  611 };
  612 
  613 static devclass_t ehci_devclass;
  614 
  615 DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0);
  616 MODULE_DEPEND(ehci, usb, 1, 1, 1);
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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
