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("$FreeBSD$");
   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 #include "usb_if.h"
   81 
   82 #define PCI_EHCI_VENDORID_ACERLABS      0x10b9
   83 #define PCI_EHCI_VENDORID_AMD           0x1022
   84 #define PCI_EHCI_VENDORID_APPLE         0x106b
   85 #define PCI_EHCI_VENDORID_ATI           0x1002
   86 #define PCI_EHCI_VENDORID_CMDTECH       0x1095
   87 #define PCI_EHCI_VENDORID_INTEL         0x8086
   88 #define PCI_EHCI_VENDORID_NEC           0x1033
   89 #define PCI_EHCI_VENDORID_OPTI          0x1045
   90 #define PCI_EHCI_VENDORID_PHILIPS       0x1131
   91 #define PCI_EHCI_VENDORID_SIS           0x1039
   92 #define PCI_EHCI_VENDORID_NVIDIA        0x12D2
   93 #define PCI_EHCI_VENDORID_NVIDIA2       0x10DE
   94 #define PCI_EHCI_VENDORID_VIA           0x1106
   95 
   96 static device_probe_t ehci_pci_probe;
   97 static device_attach_t ehci_pci_attach;
   98 static device_detach_t ehci_pci_detach;
   99 static usb_take_controller_t ehci_pci_take_controller;
  100 
  101 static const char *
  102 ehci_pci_match(device_t self)
  103 {
  104         uint32_t device_id = pci_get_devid(self);
  105 
  106         switch (device_id) {
  107         case 0x523910b9:
  108                 return "ALi M5239 USB 2.0 controller";
  109 
  110         case 0x10227463:
  111                 return "AMD 8111 USB 2.0 controller";
  112 
  113         case 0x20951022:
  114                 return ("AMD CS5536 (Geode) USB 2.0 controller");
  115 
  116         case 0x43451002:
  117                 return "ATI SB200 USB 2.0 controller";
  118         case 0x43731002:
  119                 return "ATI SB400 USB 2.0 controller";
  120         case 0x43961002:
  121                 return ("AMD SB7x0/SB8x0/SB9x0 USB 2.0 controller");
  122 
  123         case 0x0f348086:
  124                 return ("Intel BayTrail USB 2.0 controller");
  125         case 0x1d268086:
  126                 return ("Intel Patsburg USB 2.0 controller");
  127         case 0x1d2d8086:
  128                 return ("Intel Patsburg USB 2.0 controller");
  129         case 0x1e268086:
  130                 return ("Intel Panther Point USB 2.0 controller");
  131         case 0x1e2d8086:
  132                 return ("Intel Panther Point USB 2.0 controller");
  133         case 0x25ad8086:
  134                 return "Intel 6300ESB USB 2.0 controller";
  135         case 0x24cd8086:
  136                 return "Intel 82801DB/L/M (ICH4) USB 2.0 controller";
  137         case 0x24dd8086:
  138                 return "Intel 82801EB/R (ICH5) USB 2.0 controller";
  139         case 0x265c8086:
  140                 return "Intel 82801FB (ICH6) USB 2.0 controller";
  141         case 0x268c8086:
  142                 return ("Intel 63XXESB USB 2.0 controller");
  143         case 0x27cc8086:
  144                 return "Intel 82801GB/R (ICH7) USB 2.0 controller";
  145         case 0x28368086:
  146                 return "Intel 82801H (ICH8) USB 2.0 controller USB2-A";
  147         case 0x283a8086:
  148                 return "Intel 82801H (ICH8) USB 2.0 controller USB2-B";
  149         case 0x293a8086:
  150                 return "Intel 82801I (ICH9) USB 2.0 controller";
  151         case 0x293c8086:
  152                 return "Intel 82801I (ICH9) USB 2.0 controller";
  153         case 0x3a3a8086:
  154                 return "Intel 82801JI (ICH10) USB 2.0 controller USB-A";
  155         case 0x3a3c8086:
  156                 return "Intel 82801JI (ICH10) USB 2.0 controller USB-B";
  157         case 0x3b348086:
  158                 return ("Intel PCH USB 2.0 controller USB-A");
  159         case 0x3b3c8086:
  160                 return ("Intel PCH USB 2.0 controller USB-B");
  161 
  162         case 0x00e01033:
  163                 return ("NEC uPD 720100 USB 2.0 controller");
  164 
  165         case 0x006810de:
  166                 return "NVIDIA nForce2 USB 2.0 controller";
  167         case 0x008810de:
  168                 return "NVIDIA nForce2 Ultra 400 USB 2.0 controller";
  169         case 0x00d810de:
  170                 return "NVIDIA nForce3 USB 2.0 controller";
  171         case 0x00e810de:
  172                 return "NVIDIA nForce3 250 USB 2.0 controller";
  173         case 0x005b10de:
  174                 return "NVIDIA nForce CK804 USB 2.0 controller";
  175         case 0x036d10de:
  176                 return "NVIDIA nForce MCP55 USB 2.0 controller";
  177         case 0x03f210de:
  178                 return "NVIDIA nForce MCP61 USB 2.0 controller";
  179         case 0x0aa610de:
  180                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  181         case 0x0aa910de:
  182                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  183         case 0x0aaa10de:
  184                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  185 
  186         case 0x15621131:
  187                 return "Philips ISP156x USB 2.0 controller";
  188 
  189         case 0x31041106:
  190                 return ("VIA VT6202 USB 2.0 controller");
  191 
  192         default:
  193                 break;
  194         }
  195 
  196         if ((pci_get_class(self) == PCIC_SERIALBUS)
  197             && (pci_get_subclass(self) == PCIS_SERIALBUS_USB)
  198             && (pci_get_progif(self) == PCI_INTERFACE_EHCI)) {
  199                 return ("EHCI (generic) USB 2.0 controller");
  200         }
  201         return (NULL);                  /* dunno */
  202 }
  203 
  204 static int
  205 ehci_pci_probe(device_t self)
  206 {
  207         const char *desc = ehci_pci_match(self);
  208 
  209         if (desc) {
  210                 device_set_desc(self, desc);
  211                 return (0);
  212         } else {
  213                 return (ENXIO);
  214         }
  215 }
  216 
  217 static void
  218 ehci_pci_ati_quirk(device_t self, uint8_t is_sb700)
  219 {
  220         device_t smbdev;
  221         uint32_t val;
  222 
  223         if (is_sb700) {
  224                 /* Lookup SMBUS PCI device */
  225                 smbdev = pci_find_device(PCI_EHCI_VENDORID_ATI, 0x4385);
  226                 if (smbdev == NULL)
  227                         return;
  228                 val = pci_get_revid(smbdev);
  229                 if (val != 0x3a && val != 0x3b)
  230                         return;
  231         }
  232 
  233         /*
  234          * Note: this bit is described as reserved in SB700
  235          * Register Reference Guide.
  236          */
  237         val = pci_read_config(self, 0x53, 1);
  238         if (!(val & 0x8)) {
  239                 val |= 0x8;
  240                 pci_write_config(self, 0x53, val, 1);
  241                 device_printf(self, "AMD SB600/700 quirk applied\n");
  242         }
  243 }
  244 
  245 static void
  246 ehci_pci_via_quirk(device_t self)
  247 {
  248         uint32_t val;
  249 
  250         if ((pci_get_device(self) == 0x3104) && 
  251             ((pci_get_revid(self) & 0xf0) == 0x60)) {
  252                 /* Correct schedule sleep time to 10us */
  253                 val = pci_read_config(self, 0x4b, 1);
  254                 if (val & 0x20)
  255                         return;
  256                 val |= 0x20;
  257                 pci_write_config(self, 0x4b, val, 1);
  258                 device_printf(self, "VIA-quirk applied\n");
  259         }
  260 }
  261 
  262 static int
  263 ehci_pci_attach(device_t self)
  264 {
  265         ehci_softc_t *sc = device_get_softc(self);
  266         int err;
  267         int rid;
  268 
  269         /* initialise some bus fields */
  270         sc->sc_bus.parent = self;
  271         sc->sc_bus.devices = sc->sc_devices;
  272         sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
  273 
  274         /* get all DMA memory */
  275         if (usb_bus_mem_alloc_all(&sc->sc_bus,
  276             USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
  277                 return (ENOMEM);
  278         }
  279 
  280         pci_enable_busmaster(self);
  281 
  282         switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) {
  283         case PCI_USB_REV_PRE_1_0:
  284         case PCI_USB_REV_1_0:
  285         case PCI_USB_REV_1_1:
  286                 /*
  287                  * NOTE: some EHCI USB controllers have the wrong USB
  288                  * revision number. It appears those controllers are
  289                  * fully compliant so we just ignore this value in
  290                  * some common cases.
  291                  */
  292                 device_printf(self, "pre-2.0 USB revision (ignored)\n");
  293                 /* fallthrough */
  294         case PCI_USB_REV_2_0:
  295                 break;
  296         default:
  297                 /* Quirk for Parallels Desktop 4.0 */
  298                 device_printf(self, "USB revision is unknown. Assuming v2.0.\n");
  299                 break;
  300         }
  301 
  302         rid = PCI_CBMEM;
  303         sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
  304             RF_ACTIVE);
  305         if (!sc->sc_io_res) {
  306                 device_printf(self, "Could not map memory\n");
  307                 goto error;
  308         }
  309         sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
  310         sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
  311         sc->sc_io_size = rman_get_size(sc->sc_io_res);
  312 
  313         rid = 0;
  314         sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
  315             RF_SHAREABLE | RF_ACTIVE);
  316         if (sc->sc_irq_res == NULL) {
  317                 device_printf(self, "Could not allocate irq\n");
  318                 goto error;
  319         }
  320         sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
  321         if (!sc->sc_bus.bdev) {
  322                 device_printf(self, "Could not add USB device\n");
  323                 goto error;
  324         }
  325         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
  326 
  327         /*
  328          * ehci_pci_match will never return NULL if ehci_pci_probe
  329          * succeeded
  330          */
  331         device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self));
  332         switch (pci_get_vendor(self)) {
  333         case PCI_EHCI_VENDORID_ACERLABS:
  334                 sprintf(sc->sc_vendor, "AcerLabs");
  335                 break;
  336         case PCI_EHCI_VENDORID_AMD:
  337                 sprintf(sc->sc_vendor, "AMD");
  338                 break;
  339         case PCI_EHCI_VENDORID_APPLE:
  340                 sprintf(sc->sc_vendor, "Apple");
  341                 break;
  342         case PCI_EHCI_VENDORID_ATI:
  343                 sprintf(sc->sc_vendor, "ATI");
  344                 break;
  345         case PCI_EHCI_VENDORID_CMDTECH:
  346                 sprintf(sc->sc_vendor, "CMDTECH");
  347                 break;
  348         case PCI_EHCI_VENDORID_INTEL:
  349                 sprintf(sc->sc_vendor, "Intel");
  350                 break;
  351         case PCI_EHCI_VENDORID_NEC:
  352                 sprintf(sc->sc_vendor, "NEC");
  353                 break;
  354         case PCI_EHCI_VENDORID_OPTI:
  355                 sprintf(sc->sc_vendor, "OPTi");
  356                 break;
  357         case PCI_EHCI_VENDORID_PHILIPS:
  358                 sprintf(sc->sc_vendor, "Philips");
  359                 break;
  360         case PCI_EHCI_VENDORID_SIS:
  361                 sprintf(sc->sc_vendor, "SiS");
  362                 break;
  363         case PCI_EHCI_VENDORID_NVIDIA:
  364         case PCI_EHCI_VENDORID_NVIDIA2:
  365                 sprintf(sc->sc_vendor, "nVidia");
  366                 break;
  367         case PCI_EHCI_VENDORID_VIA:
  368                 sprintf(sc->sc_vendor, "VIA");
  369                 break;
  370         default:
  371                 if (bootverbose)
  372                         device_printf(self, "(New EHCI DeviceId=0x%08x)\n",
  373                             pci_get_devid(self));
  374                 sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self));
  375         }
  376 
  377 #if (__FreeBSD_version >= 700031)
  378         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  379             NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
  380 #else
  381         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  382             (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
  383 #endif
  384         if (err) {
  385                 device_printf(self, "Could not setup irq, %d\n", err);
  386                 sc->sc_intr_hdl = NULL;
  387                 goto error;
  388         }
  389         ehci_pci_take_controller(self);
  390 
  391         /* Undocumented quirks taken from Linux */
  392 
  393         switch (pci_get_vendor(self)) {
  394         case PCI_EHCI_VENDORID_ATI:
  395                 /* SB600 and SB700 EHCI quirk */
  396                 switch (pci_get_device(self)) {
  397                 case 0x4386:
  398                         ehci_pci_ati_quirk(self, 0);
  399                         break;
  400                 case 0x4396:
  401                         ehci_pci_ati_quirk(self, 1);
  402                         break;
  403                 default:
  404                         break;
  405                 }
  406                 break;
  407 
  408         case PCI_EHCI_VENDORID_VIA:
  409                 ehci_pci_via_quirk(self);
  410                 break;
  411 
  412         default:
  413                 break;
  414         }
  415 
  416         /* Dropped interrupts workaround */
  417         switch (pci_get_vendor(self)) {
  418         case PCI_EHCI_VENDORID_ATI:
  419         case PCI_EHCI_VENDORID_VIA:
  420                 sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG;
  421                 if (bootverbose)
  422                         device_printf(self,
  423                             "Dropped interrupts workaround enabled\n");
  424                 break;
  425         default:
  426                 break;
  427         }
  428 
  429         /* Doorbell feature workaround */
  430         switch (pci_get_vendor(self)) {
  431         case PCI_EHCI_VENDORID_NVIDIA:
  432         case PCI_EHCI_VENDORID_NVIDIA2:
  433                 sc->sc_flags |= EHCI_SCFLG_IAADBUG;
  434                 if (bootverbose)
  435                         device_printf(self,
  436                             "Doorbell workaround enabled\n");
  437                 break;
  438         default:
  439                 break;
  440         }
  441 
  442         err = ehci_init(sc);
  443         if (!err) {
  444                 err = device_probe_and_attach(sc->sc_bus.bdev);
  445         }
  446         if (err) {
  447                 device_printf(self, "USB init failed err=%d\n", err);
  448                 goto error;
  449         }
  450         return (0);
  451 
  452 error:
  453         ehci_pci_detach(self);
  454         return (ENXIO);
  455 }
  456 
  457 static int
  458 ehci_pci_detach(device_t self)
  459 {
  460         ehci_softc_t *sc = device_get_softc(self);
  461 
  462         /* during module unload there are lots of children leftover */
  463         device_delete_all_children(self);
  464 
  465         pci_disable_busmaster(self);
  466 
  467         if (sc->sc_irq_res && sc->sc_intr_hdl) {
  468                 /*
  469                  * only call ehci_detach() after ehci_init()
  470                  */
  471                 ehci_detach(sc);
  472 
  473                 int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
  474 
  475                 if (err)
  476                         /* XXX or should we panic? */
  477                         device_printf(self, "Could not tear down irq, %d\n",
  478                             err);
  479                 sc->sc_intr_hdl = NULL;
  480         }
  481         if (sc->sc_irq_res) {
  482                 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
  483                 sc->sc_irq_res = NULL;
  484         }
  485         if (sc->sc_io_res) {
  486                 bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM,
  487                     sc->sc_io_res);
  488                 sc->sc_io_res = NULL;
  489         }
  490         usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
  491 
  492         return (0);
  493 }
  494 
  495 static int
  496 ehci_pci_take_controller(device_t self)
  497 {
  498         ehci_softc_t *sc = device_get_softc(self);
  499         uint32_t cparams;
  500         uint32_t eec;
  501         uint16_t to;
  502         uint8_t eecp;
  503         uint8_t bios_sem;
  504 
  505         cparams = EREAD4(sc, EHCI_HCCPARAMS);
  506 
  507         /* Synchronise with the BIOS if it owns the controller. */
  508         for (eecp = EHCI_HCC_EECP(cparams); eecp != 0;
  509             eecp = EHCI_EECP_NEXT(eec)) {
  510                 eec = pci_read_config(self, eecp, 4);
  511                 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) {
  512                         continue;
  513                 }
  514                 bios_sem = pci_read_config(self, eecp +
  515                     EHCI_LEGSUP_BIOS_SEM, 1);
  516                 if (bios_sem == 0) {
  517                         continue;
  518                 }
  519                 device_printf(sc->sc_bus.bdev, "waiting for BIOS "
  520                     "to give up control\n");
  521                 pci_write_config(self, eecp +
  522                     EHCI_LEGSUP_OS_SEM, 1, 1);
  523                 to = 500;
  524                 while (1) {
  525                         bios_sem = pci_read_config(self, eecp +
  526                             EHCI_LEGSUP_BIOS_SEM, 1);
  527                         if (bios_sem == 0)
  528                                 break;
  529 
  530                         if (--to == 0) {
  531                                 device_printf(sc->sc_bus.bdev,
  532                                     "timed out waiting for BIOS\n");
  533                                 break;
  534                         }
  535                         usb_pause_mtx(NULL, hz / 100);  /* wait 10ms */
  536                 }
  537         }
  538         return (0);
  539 }
  540 
  541 static device_method_t ehci_pci_methods[] = {
  542         /* Device interface */
  543         DEVMETHOD(device_probe, ehci_pci_probe),
  544         DEVMETHOD(device_attach, ehci_pci_attach),
  545         DEVMETHOD(device_detach, ehci_pci_detach),
  546         DEVMETHOD(device_suspend, bus_generic_suspend),
  547         DEVMETHOD(device_resume, bus_generic_resume),
  548         DEVMETHOD(device_shutdown, bus_generic_shutdown),
  549         DEVMETHOD(usb_take_controller, ehci_pci_take_controller),
  550 
  551         DEVMETHOD_END
  552 };
  553 
  554 static driver_t ehci_driver = {
  555         .name = "ehci",
  556         .methods = ehci_pci_methods,
  557         .size = sizeof(struct ehci_softc),
  558 };
  559 
  560 static devclass_t ehci_devclass;
  561 
  562 DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0);
  563 MODULE_DEPEND(ehci, usb, 1, 1, 1);
Cache object: f9799897d19cc0dd4b3c7a32725869f8
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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
