ehci_pci.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-NetBSD
    3  *
    4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Lennart Augustsson (augustss@carlstedt.se) at
    9  * Carlstedt Research & Technology.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   30  * POSSIBILITY OF SUCH DAMAGE.
   31  */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: releng/12.0/sys/dev/usb/controller/ehci_pci.c 326255 2017-11-27 14:52:40Z pfg $");
   35 
   36 /*
   37  * USB Enhanced Host Controller Driver, a.k.a. USB 2.0 controller.
   38  *
   39  * The EHCI 1.0 spec can be found at
   40  * http://developer.intel.com/technology/usb/download/ehci-r10.pdf
   41  * and the USB 2.0 spec at
   42  * http://www.usb.org/developers/docs/usb_20.zip
   43  */
   44 
   45 /* The low level controller code for EHCI has been split into
   46  * PCI probes and EHCI specific code. This was done to facilitate the
   47  * sharing of code between *BSD's
   48  */
   49 
   50 #include <sys/stdint.h>
   51 #include <sys/stddef.h>
   52 #include <sys/param.h>
   53 #include <sys/queue.h>
   54 #include <sys/types.h>
   55 #include <sys/systm.h>
   56 #include <sys/kernel.h>
   57 #include <sys/bus.h>
   58 #include <sys/module.h>
   59 #include <sys/lock.h>
   60 #include <sys/mutex.h>
   61 #include <sys/condvar.h>
   62 #include <sys/sysctl.h>
   63 #include <sys/sx.h>
   64 #include <sys/unistd.h>
   65 #include <sys/callout.h>
   66 #include <sys/malloc.h>
   67 #include <sys/priv.h>
   68 
   69 #include <dev/usb/usb.h>
   70 #include <dev/usb/usbdi.h>
   71 
   72 #include <dev/usb/usb_core.h>
   73 #include <dev/usb/usb_busdma.h>
   74 #include <dev/usb/usb_process.h>
   75 #include <dev/usb/usb_util.h>
   76 
   77 #include <dev/usb/usb_controller.h>
   78 #include <dev/usb/usb_bus.h>
   79 #include <dev/usb/usb_pci.h>
   80 #include <dev/usb/controller/ehci.h>
   81 #include <dev/usb/controller/ehcireg.h>
   82 #include "usb_if.h"
   83 
   84 #define PCI_EHCI_VENDORID_ACERLABS      0x10b9
   85 #define PCI_EHCI_VENDORID_AMD           0x1022
   86 #define PCI_EHCI_VENDORID_APPLE         0x106b
   87 #define PCI_EHCI_VENDORID_ATI           0x1002
   88 #define PCI_EHCI_VENDORID_CMDTECH       0x1095
   89 #define PCI_EHCI_VENDORID_INTEL         0x8086
   90 #define PCI_EHCI_VENDORID_NEC           0x1033
   91 #define PCI_EHCI_VENDORID_OPTI          0x1045
   92 #define PCI_EHCI_VENDORID_PHILIPS       0x1131
   93 #define PCI_EHCI_VENDORID_SIS           0x1039
   94 #define PCI_EHCI_VENDORID_NVIDIA        0x12D2
   95 #define PCI_EHCI_VENDORID_NVIDIA2       0x10DE
   96 #define PCI_EHCI_VENDORID_VIA           0x1106
   97 
   98 static device_probe_t ehci_pci_probe;
   99 static device_attach_t ehci_pci_attach;
  100 static device_detach_t ehci_pci_detach;
  101 static usb_take_controller_t ehci_pci_take_controller;
  102 
  103 static const char *
  104 ehci_pci_match(device_t self)
  105 {
  106         uint32_t device_id = pci_get_devid(self);
  107 
  108         switch (device_id) {
  109         case 0x523910b9:
  110                 return "ALi M5239 USB 2.0 controller";
  111 
  112         case 0x10227463:
  113                 return "AMD 8111 USB 2.0 controller";
  114 
  115         case 0x20951022:
  116                 return ("AMD CS5536 (Geode) USB 2.0 controller");
  117         case 0x78081022:
  118                 return ("AMD FCH USB 2.0 controller");
  119 
  120         case 0x43451002:
  121                 return "ATI SB200 USB 2.0 controller";
  122         case 0x43731002:
  123                 return "ATI SB400 USB 2.0 controller";
  124         case 0x43961002:
  125                 return ("AMD SB7x0/SB8x0/SB9x0 USB 2.0 controller");
  126 
  127         case 0x0f348086:
  128                 return ("Intel BayTrail USB 2.0 controller");
  129         case 0x1c268086:
  130                 return ("Intel Cougar Point USB 2.0 controller");
  131         case 0x1c2d8086:
  132                 return ("Intel Cougar Point USB 2.0 controller");
  133         case 0x1d268086:
  134                 return ("Intel Patsburg USB 2.0 controller");
  135         case 0x1d2d8086:
  136                 return ("Intel Patsburg USB 2.0 controller");
  137         case 0x1e268086:
  138                 return ("Intel Panther Point USB 2.0 controller");
  139         case 0x1e2d8086:
  140                 return ("Intel Panther Point USB 2.0 controller");
  141         case 0x1f2c8086:
  142                 return ("Intel Avoton USB 2.0 controller");
  143         case 0x25ad8086:
  144                 return "Intel 6300ESB USB 2.0 controller";
  145         case 0x24cd8086:
  146                 return "Intel 82801DB/L/M (ICH4) USB 2.0 controller";
  147         case 0x24dd8086:
  148                 return "Intel 82801EB/R (ICH5) USB 2.0 controller";
  149         case 0x265c8086:
  150                 return "Intel 82801FB (ICH6) USB 2.0 controller";
  151         case 0x268c8086:
  152                 return ("Intel 63XXESB USB 2.0 controller");
  153         case 0x27cc8086:
  154                 return "Intel 82801GB/R (ICH7) USB 2.0 controller";
  155         case 0x28368086:
  156                 return "Intel 82801H (ICH8) USB 2.0 controller USB2-A";
  157         case 0x283a8086:
  158                 return "Intel 82801H (ICH8) USB 2.0 controller USB2-B";
  159         case 0x293a8086:
  160                 return "Intel 82801I (ICH9) USB 2.0 controller";
  161         case 0x293c8086:
  162                 return "Intel 82801I (ICH9) USB 2.0 controller";
  163         case 0x3a3a8086:
  164                 return "Intel 82801JI (ICH10) USB 2.0 controller USB-A";
  165         case 0x3a3c8086:
  166                 return "Intel 82801JI (ICH10) USB 2.0 controller USB-B";
  167         case 0x3b348086:
  168                 return ("Intel PCH USB 2.0 controller USB-A");
  169         case 0x3b3c8086:
  170                 return ("Intel PCH USB 2.0 controller USB-B");
  171         case 0x8c268086:
  172                 return ("Intel Lynx Point USB 2.0 controller USB-A");
  173         case 0x8c2d8086:
  174                 return ("Intel Lynx Point USB 2.0 controller USB-B");
  175         case 0x8ca68086:
  176                 return ("Intel Wildcat Point USB 2.0 controller USB-A");
  177         case 0x8cad8086:
  178                 return ("Intel Wildcat Point USB 2.0 controller USB-B");
  179         case 0x8d268086:
  180                 return ("Intel Wellsburg USB 2.0 controller");
  181         case 0x8d2d8086:
  182                 return ("Intel Wellsburg USB 2.0 controller");
  183         case 0x9c268086:
  184                 return ("Intel Lynx Point LP USB 2.0 controller USB");
  185 
  186         case 0x00e01033:
  187                 return ("NEC uPD 72010x USB 2.0 controller");
  188 
  189         case 0x006810de:
  190                 return "NVIDIA nForce2 USB 2.0 controller";
  191         case 0x008810de:
  192                 return "NVIDIA nForce2 Ultra 400 USB 2.0 controller";
  193         case 0x00d810de:
  194                 return "NVIDIA nForce3 USB 2.0 controller";
  195         case 0x00e810de:
  196                 return "NVIDIA nForce3 250 USB 2.0 controller";
  197         case 0x005b10de:
  198                 return "NVIDIA nForce CK804 USB 2.0 controller";
  199         case 0x036d10de:
  200                 return "NVIDIA nForce MCP55 USB 2.0 controller";
  201         case 0x03f210de:
  202                 return "NVIDIA nForce MCP61 USB 2.0 controller";
  203         case 0x0aa610de:
  204                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  205         case 0x0aa910de:
  206                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  207         case 0x0aaa10de:
  208                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  209 
  210         case 0x15621131:
  211                 return "Philips ISP156x USB 2.0 controller";
  212 
  213         case 0x31041106:
  214                 return ("VIA VT6202 USB 2.0 controller");
  215 
  216         default:
  217                 break;
  218         }
  219 
  220         if ((pci_get_class(self) == PCIC_SERIALBUS)
  221             && (pci_get_subclass(self) == PCIS_SERIALBUS_USB)
  222             && (pci_get_progif(self) == PCI_INTERFACE_EHCI)) {
  223                 return ("EHCI (generic) USB 2.0 controller");
  224         }
  225         return (NULL);                  /* dunno */
  226 }
  227 
  228 static int
  229 ehci_pci_probe(device_t self)
  230 {
  231         const char *desc = ehci_pci_match(self);
  232 
  233         if (desc) {
  234                 device_set_desc(self, desc);
  235                 return (BUS_PROBE_DEFAULT);
  236         } else {
  237                 return (ENXIO);
  238         }
  239 }
  240 
  241 static void
  242 ehci_pci_ati_quirk(device_t self, uint8_t is_sb700)
  243 {
  244         device_t smbdev;
  245         uint32_t val;
  246 
  247         if (is_sb700) {
  248                 /* Lookup SMBUS PCI device */
  249                 smbdev = pci_find_device(PCI_EHCI_VENDORID_ATI, 0x4385);
  250                 if (smbdev == NULL)
  251                         return;
  252                 val = pci_get_revid(smbdev);
  253                 if (val != 0x3a && val != 0x3b)
  254                         return;
  255         }
  256 
  257         /*
  258          * Note: this bit is described as reserved in SB700
  259          * Register Reference Guide.
  260          */
  261         val = pci_read_config(self, 0x53, 1);
  262         if (!(val & 0x8)) {
  263                 val |= 0x8;
  264                 pci_write_config(self, 0x53, val, 1);
  265                 device_printf(self, "AMD SB600/700 quirk applied\n");
  266         }
  267 }
  268 
  269 static void
  270 ehci_pci_via_quirk(device_t self)
  271 {
  272         uint32_t val;
  273 
  274         if ((pci_get_device(self) == 0x3104) && 
  275             ((pci_get_revid(self) & 0xf0) == 0x60)) {
  276                 /* Correct schedule sleep time to 10us */
  277                 val = pci_read_config(self, 0x4b, 1);
  278                 if (val & 0x20)
  279                         return;
  280                 val |= 0x20;
  281                 pci_write_config(self, 0x4b, val, 1);
  282                 device_printf(self, "VIA-quirk applied\n");
  283         }
  284 }
  285 
  286 static int
  287 ehci_pci_attach(device_t self)
  288 {
  289         ehci_softc_t *sc = device_get_softc(self);
  290         int err;
  291         int rid;
  292 
  293         /* initialise some bus fields */
  294         sc->sc_bus.parent = self;
  295         sc->sc_bus.devices = sc->sc_devices;
  296         sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
  297         sc->sc_bus.dma_bits = 32;
  298 
  299         /* get all DMA memory */
  300         if (usb_bus_mem_alloc_all(&sc->sc_bus,
  301             USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
  302                 return (ENOMEM);
  303         }
  304 
  305         pci_enable_busmaster(self);
  306 
  307         switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) {
  308         case PCI_USB_REV_PRE_1_0:
  309         case PCI_USB_REV_1_0:
  310         case PCI_USB_REV_1_1:
  311                 /*
  312                  * NOTE: some EHCI USB controllers have the wrong USB
  313                  * revision number. It appears those controllers are
  314                  * fully compliant so we just ignore this value in
  315                  * some common cases.
  316                  */
  317                 device_printf(self, "pre-2.0 USB revision (ignored)\n");
  318                 /* fallthrough */
  319         case PCI_USB_REV_2_0:
  320                 break;
  321         default:
  322                 /* Quirk for Parallels Desktop 4.0 */
  323                 device_printf(self, "USB revision is unknown. Assuming v2.0.\n");
  324                 break;
  325         }
  326 
  327         rid = PCI_CBMEM;
  328         sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
  329             RF_ACTIVE);
  330         if (!sc->sc_io_res) {
  331                 device_printf(self, "Could not map memory\n");
  332                 goto error;
  333         }
  334         sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
  335         sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
  336         sc->sc_io_size = rman_get_size(sc->sc_io_res);
  337 
  338         rid = 0;
  339         sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
  340             RF_SHAREABLE | RF_ACTIVE);
  341         if (sc->sc_irq_res == NULL) {
  342                 device_printf(self, "Could not allocate irq\n");
  343                 goto error;
  344         }
  345         sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
  346         if (!sc->sc_bus.bdev) {
  347                 device_printf(self, "Could not add USB device\n");
  348                 goto error;
  349         }
  350         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
  351 
  352         /*
  353          * ehci_pci_match will never return NULL if ehci_pci_probe
  354          * succeeded
  355          */
  356         device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self));
  357         switch (pci_get_vendor(self)) {
  358         case PCI_EHCI_VENDORID_ACERLABS:
  359                 sprintf(sc->sc_vendor, "AcerLabs");
  360                 break;
  361         case PCI_EHCI_VENDORID_AMD:
  362                 sprintf(sc->sc_vendor, "AMD");
  363                 break;
  364         case PCI_EHCI_VENDORID_APPLE:
  365                 sprintf(sc->sc_vendor, "Apple");
  366                 break;
  367         case PCI_EHCI_VENDORID_ATI:
  368                 sprintf(sc->sc_vendor, "ATI");
  369                 break;
  370         case PCI_EHCI_VENDORID_CMDTECH:
  371                 sprintf(sc->sc_vendor, "CMDTECH");
  372                 break;
  373         case PCI_EHCI_VENDORID_INTEL:
  374                 sprintf(sc->sc_vendor, "Intel");
  375                 break;
  376         case PCI_EHCI_VENDORID_NEC:
  377                 sprintf(sc->sc_vendor, "NEC");
  378                 break;
  379         case PCI_EHCI_VENDORID_OPTI:
  380                 sprintf(sc->sc_vendor, "OPTi");
  381                 break;
  382         case PCI_EHCI_VENDORID_PHILIPS:
  383                 sprintf(sc->sc_vendor, "Philips");
  384                 break;
  385         case PCI_EHCI_VENDORID_SIS:
  386                 sprintf(sc->sc_vendor, "SiS");
  387                 break;
  388         case PCI_EHCI_VENDORID_NVIDIA:
  389         case PCI_EHCI_VENDORID_NVIDIA2:
  390                 sprintf(sc->sc_vendor, "nVidia");
  391                 break;
  392         case PCI_EHCI_VENDORID_VIA:
  393                 sprintf(sc->sc_vendor, "VIA");
  394                 break;
  395         default:
  396                 if (bootverbose)
  397                         device_printf(self, "(New EHCI DeviceId=0x%08x)\n",
  398                             pci_get_devid(self));
  399                 sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self));
  400         }
  401 
  402 #if (__FreeBSD_version >= 700031)
  403         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  404             NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
  405 #else
  406         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  407             (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
  408 #endif
  409         if (err) {
  410                 device_printf(self, "Could not setup irq, %d\n", err);
  411                 sc->sc_intr_hdl = NULL;
  412                 goto error;
  413         }
  414         ehci_pci_take_controller(self);
  415 
  416         /* Undocumented quirks taken from Linux */
  417 
  418         switch (pci_get_vendor(self)) {
  419         case PCI_EHCI_VENDORID_ATI:
  420                 /* SB600 and SB700 EHCI quirk */
  421                 switch (pci_get_device(self)) {
  422                 case 0x4386:
  423                         ehci_pci_ati_quirk(self, 0);
  424                         break;
  425                 case 0x4396:
  426                         ehci_pci_ati_quirk(self, 1);
  427                         break;
  428                 default:
  429                         break;
  430                 }
  431                 break;
  432 
  433         case PCI_EHCI_VENDORID_VIA:
  434                 ehci_pci_via_quirk(self);
  435                 break;
  436 
  437         default:
  438                 break;
  439         }
  440 
  441         /* Dropped interrupts workaround */
  442         switch (pci_get_vendor(self)) {
  443         case PCI_EHCI_VENDORID_ATI:
  444         case PCI_EHCI_VENDORID_VIA:
  445                 sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG;
  446                 if (bootverbose)
  447                         device_printf(self,
  448                             "Dropped interrupts workaround enabled\n");
  449                 break;
  450         default:
  451                 break;
  452         }
  453 
  454         /* Doorbell feature workaround */
  455         switch (pci_get_vendor(self)) {
  456         case PCI_EHCI_VENDORID_NVIDIA:
  457         case PCI_EHCI_VENDORID_NVIDIA2:
  458                 sc->sc_flags |= EHCI_SCFLG_IAADBUG;
  459                 if (bootverbose)
  460                         device_printf(self,
  461                             "Doorbell workaround enabled\n");
  462                 break;
  463         default:
  464                 break;
  465         }
  466 
  467         err = ehci_init(sc);
  468         if (!err) {
  469                 err = device_probe_and_attach(sc->sc_bus.bdev);
  470         }
  471         if (err) {
  472                 device_printf(self, "USB init failed err=%d\n", err);
  473                 goto error;
  474         }
  475         return (0);
  476 
  477 error:
  478         ehci_pci_detach(self);
  479         return (ENXIO);
  480 }
  481 
  482 static int
  483 ehci_pci_detach(device_t self)
  484 {
  485         ehci_softc_t *sc = device_get_softc(self);
  486 
  487         /* during module unload there are lots of children leftover */
  488         device_delete_children(self);
  489 
  490         pci_disable_busmaster(self);
  491 
  492         if (sc->sc_irq_res && sc->sc_intr_hdl) {
  493                 /*
  494                  * only call ehci_detach() after ehci_init()
  495                  */
  496                 ehci_detach(sc);
  497 
  498                 int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
  499 
  500                 if (err)
  501                         /* XXX or should we panic? */
  502                         device_printf(self, "Could not tear down irq, %d\n",
  503                             err);
  504                 sc->sc_intr_hdl = NULL;
  505         }
  506         if (sc->sc_irq_res) {
  507                 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
  508                 sc->sc_irq_res = NULL;
  509         }
  510         if (sc->sc_io_res) {
  511                 bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM,
  512                     sc->sc_io_res);
  513                 sc->sc_io_res = NULL;
  514         }
  515         usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
  516 
  517         return (0);
  518 }
  519 
  520 static int
  521 ehci_pci_take_controller(device_t self)
  522 {
  523         ehci_softc_t *sc = device_get_softc(self);
  524         uint32_t cparams;
  525         uint32_t eec;
  526         uint16_t to;
  527         uint8_t eecp;
  528         uint8_t bios_sem;
  529 
  530         cparams = EREAD4(sc, EHCI_HCCPARAMS);
  531 
  532         /* Synchronise with the BIOS if it owns the controller. */
  533         for (eecp = EHCI_HCC_EECP(cparams); eecp != 0;
  534             eecp = EHCI_EECP_NEXT(eec)) {
  535                 eec = pci_read_config(self, eecp, 4);
  536                 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) {
  537                         continue;
  538                 }
  539                 bios_sem = pci_read_config(self, eecp +
  540                     EHCI_LEGSUP_BIOS_SEM, 1);
  541                 if (bios_sem == 0) {
  542                         continue;
  543                 }
  544                 device_printf(sc->sc_bus.bdev, "waiting for BIOS "
  545                     "to give up control\n");
  546                 pci_write_config(self, eecp +
  547                     EHCI_LEGSUP_OS_SEM, 1, 1);
  548                 to = 500;
  549                 while (1) {
  550                         bios_sem = pci_read_config(self, eecp +
  551                             EHCI_LEGSUP_BIOS_SEM, 1);
  552                         if (bios_sem == 0)
  553                                 break;
  554 
  555                         if (--to == 0) {
  556                                 device_printf(sc->sc_bus.bdev,
  557                                     "timed out waiting for BIOS\n");
  558                                 break;
  559                         }
  560                         usb_pause_mtx(NULL, hz / 100);  /* wait 10ms */
  561                 }
  562         }
  563         return (0);
  564 }
  565 
  566 static device_method_t ehci_pci_methods[] = {
  567         /* Device interface */
  568         DEVMETHOD(device_probe, ehci_pci_probe),
  569         DEVMETHOD(device_attach, ehci_pci_attach),
  570         DEVMETHOD(device_detach, ehci_pci_detach),
  571         DEVMETHOD(device_suspend, bus_generic_suspend),
  572         DEVMETHOD(device_resume, bus_generic_resume),
  573         DEVMETHOD(device_shutdown, bus_generic_shutdown),
  574         DEVMETHOD(usb_take_controller, ehci_pci_take_controller),
  575 
  576         DEVMETHOD_END
  577 };
  578 
  579 static driver_t ehci_driver = {
  580         .name = "ehci",
  581         .methods = ehci_pci_methods,
  582         .size = sizeof(struct ehci_softc),
  583 };
  584 
  585 static devclass_t ehci_devclass;
  586 
  587 DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0);
  588 MODULE_DEPEND(ehci, usb, 1, 1, 1);
Cache object: 7537e7ed6d8ff8f59864c1c2cec10306
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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
