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/8.3/sys/dev/usb/controller/ehci_pci.c 229370 2012-01-03 09:15:54Z 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 #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 0x268c8086:
  108                 return ("Intel 63XXESB USB 2.0 controller");
  109 
  110         case 0x523910b9:
  111                 return "ALi M5239 USB 2.0 controller";
  112 
  113         case 0x10227463:
  114                 return "AMD 8111 USB 2.0 controller";
  115 
  116         case 0x20951022:
  117                 return ("AMD CS5536 (Geode) USB 2.0 controller");
  118 
  119         case 0x43451002:
  120                 return "ATI SB200 USB 2.0 controller";
  121         case 0x43731002:
  122                 return "ATI SB400 USB 2.0 controller";
  123 
  124         case 0x25ad8086:
  125                 return "Intel 6300ESB USB 2.0 controller";
  126         case 0x24cd8086:
  127                 return "Intel 82801DB/L/M (ICH4) USB 2.0 controller";
  128         case 0x24dd8086:
  129                 return "Intel 82801EB/R (ICH5) USB 2.0 controller";
  130         case 0x265c8086:
  131                 return "Intel 82801FB (ICH6) USB 2.0 controller";
  132         case 0x27cc8086:
  133                 return "Intel 82801GB/R (ICH7) USB 2.0 controller";
  134 
  135         case 0x28368086:
  136                 return "Intel 82801H (ICH8) USB 2.0 controller USB2-A";
  137         case 0x283a8086:
  138                 return "Intel 82801H (ICH8) USB 2.0 controller USB2-B";
  139         case 0x293a8086:
  140                 return "Intel 82801I (ICH9) USB 2.0 controller";
  141         case 0x293c8086:
  142                 return "Intel 82801I (ICH9) USB 2.0 controller";
  143         case 0x3a3a8086:
  144                 return "Intel 82801JI (ICH10) USB 2.0 controller USB-A";
  145         case 0x3a3c8086:
  146                 return "Intel 82801JI (ICH10) USB 2.0 controller USB-B";
  147         case 0x3b348086:
  148                 return ("Intel PCH USB 2.0 controller USB-A");
  149         case 0x3b3c8086:
  150                 return ("Intel PCH USB 2.0 controller USB-B");
  151 
  152         case 0x00e01033:
  153                 return ("NEC uPD 720100 USB 2.0 controller");
  154 
  155         case 0x006810de:
  156                 return "NVIDIA nForce2 USB 2.0 controller";
  157         case 0x008810de:
  158                 return "NVIDIA nForce2 Ultra 400 USB 2.0 controller";
  159         case 0x00d810de:
  160                 return "NVIDIA nForce3 USB 2.0 controller";
  161         case 0x00e810de:
  162                 return "NVIDIA nForce3 250 USB 2.0 controller";
  163         case 0x005b10de:
  164                 return "NVIDIA nForce4 USB 2.0 controller";
  165         case 0x036d10de:
  166                 return "NVIDIA nForce MCP55 USB 2.0 controller";
  167         case 0x03f210de:
  168                 return "NVIDIA nForce MCP61 USB 2.0 controller";
  169         case 0x0aa610de:
  170                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  171         case 0x0aa910de:
  172                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  173         case 0x0aaa10de:
  174                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  175 
  176         case 0x15621131:
  177                 return "Philips ISP156x USB 2.0 controller";
  178 
  179         case 0x31041106:
  180                 return ("VIA VT6202 USB 2.0 controller");
  181 
  182         default:
  183                 break;
  184         }
  185 
  186         if ((pci_get_class(self) == PCIC_SERIALBUS)
  187             && (pci_get_subclass(self) == PCIS_SERIALBUS_USB)
  188             && (pci_get_progif(self) == PCI_INTERFACE_EHCI)) {
  189                 return ("EHCI (generic) USB 2.0 controller");
  190         }
  191         return (NULL);                  /* dunno */
  192 }
  193 
  194 static int
  195 ehci_pci_probe(device_t self)
  196 {
  197         const char *desc = ehci_pci_match(self);
  198 
  199         if (desc) {
  200                 device_set_desc(self, desc);
  201                 return (0);
  202         } else {
  203                 return (ENXIO);
  204         }
  205 }
  206 
  207 static void
  208 ehci_pci_ati_quirk(device_t self, uint8_t is_sb700)
  209 {
  210         device_t smbdev;
  211         uint32_t val;
  212 
  213         if (is_sb700) {
  214                 /* Lookup SMBUS PCI device */
  215                 smbdev = pci_find_device(PCI_EHCI_VENDORID_ATI, 0x4385);
  216                 if (smbdev == NULL)
  217                         return;
  218                 val = pci_get_revid(smbdev);
  219                 if (val != 0x3a && val != 0x3b)
  220                         return;
  221         }
  222 
  223         /*
  224          * Note: this bit is described as reserved in SB700
  225          * Register Reference Guide.
  226          */
  227         val = pci_read_config(self, 0x53, 1);
  228         if (!(val & 0x8)) {
  229                 val |= 0x8;
  230                 pci_write_config(self, 0x53, val, 1);
  231                 device_printf(self, "AMD SB600/700 quirk applied\n");
  232         }
  233 }
  234 
  235 static void
  236 ehci_pci_via_quirk(device_t self)
  237 {
  238         uint32_t val;
  239 
  240         if ((pci_get_device(self) == 0x3104) && 
  241             ((pci_get_revid(self) & 0xf0) == 0x60)) {
  242                 /* Correct schedule sleep time to 10us */
  243                 val = pci_read_config(self, 0x4b, 1);
  244                 if (val & 0x20)
  245                         return;
  246                 pci_write_config(self, 0x4b, val, 1);
  247                 device_printf(self, "VIA-quirk applied\n");
  248         }
  249 }
  250 
  251 static int
  252 ehci_pci_attach(device_t self)
  253 {
  254         ehci_softc_t *sc = device_get_softc(self);
  255         int err;
  256         int rid;
  257 
  258         /* initialise some bus fields */
  259         sc->sc_bus.parent = self;
  260         sc->sc_bus.devices = sc->sc_devices;
  261         sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
  262 
  263         /* get all DMA memory */
  264         if (usb_bus_mem_alloc_all(&sc->sc_bus,
  265             USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
  266                 return (ENOMEM);
  267         }
  268 
  269         pci_enable_busmaster(self);
  270 
  271         switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) {
  272         case PCI_USB_REV_PRE_1_0:
  273         case PCI_USB_REV_1_0:
  274         case PCI_USB_REV_1_1:
  275                 /*
  276                  * NOTE: some EHCI USB controllers have the wrong USB
  277                  * revision number. It appears those controllers are
  278                  * fully compliant so we just ignore this value in
  279                  * some common cases.
  280                  */
  281                 device_printf(self, "pre-2.0 USB revision (ignored)\n");
  282                 /* fallthrough */
  283         case PCI_USB_REV_2_0:
  284                 break;
  285         default:
  286                 /* Quirk for Parallels Desktop 4.0 */
  287                 device_printf(self, "USB revision is unknown. Assuming v2.0.\n");
  288                 break;
  289         }
  290 
  291         rid = PCI_CBMEM;
  292         sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
  293             RF_ACTIVE);
  294         if (!sc->sc_io_res) {
  295                 device_printf(self, "Could not map memory\n");
  296                 goto error;
  297         }
  298         sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
  299         sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
  300         sc->sc_io_size = rman_get_size(sc->sc_io_res);
  301 
  302         rid = 0;
  303         sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
  304             RF_SHAREABLE | RF_ACTIVE);
  305         if (sc->sc_irq_res == NULL) {
  306                 device_printf(self, "Could not allocate irq\n");
  307                 goto error;
  308         }
  309         sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
  310         if (!sc->sc_bus.bdev) {
  311                 device_printf(self, "Could not add USB device\n");
  312                 goto error;
  313         }
  314         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
  315 
  316         /*
  317          * ehci_pci_match will never return NULL if ehci_pci_probe
  318          * succeeded
  319          */
  320         device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self));
  321         switch (pci_get_vendor(self)) {
  322         case PCI_EHCI_VENDORID_ACERLABS:
  323                 sprintf(sc->sc_vendor, "AcerLabs");
  324                 break;
  325         case PCI_EHCI_VENDORID_AMD:
  326                 sprintf(sc->sc_vendor, "AMD");
  327                 break;
  328         case PCI_EHCI_VENDORID_APPLE:
  329                 sprintf(sc->sc_vendor, "Apple");
  330                 break;
  331         case PCI_EHCI_VENDORID_ATI:
  332                 sprintf(sc->sc_vendor, "ATI");
  333                 break;
  334         case PCI_EHCI_VENDORID_CMDTECH:
  335                 sprintf(sc->sc_vendor, "CMDTECH");
  336                 break;
  337         case PCI_EHCI_VENDORID_INTEL:
  338                 sprintf(sc->sc_vendor, "Intel");
  339                 break;
  340         case PCI_EHCI_VENDORID_NEC:
  341                 sprintf(sc->sc_vendor, "NEC");
  342                 break;
  343         case PCI_EHCI_VENDORID_OPTI:
  344                 sprintf(sc->sc_vendor, "OPTi");
  345                 break;
  346         case PCI_EHCI_VENDORID_PHILIPS:
  347                 sprintf(sc->sc_vendor, "Philips");
  348                 break;
  349         case PCI_EHCI_VENDORID_SIS:
  350                 sprintf(sc->sc_vendor, "SiS");
  351                 break;
  352         case PCI_EHCI_VENDORID_NVIDIA:
  353         case PCI_EHCI_VENDORID_NVIDIA2:
  354                 sprintf(sc->sc_vendor, "nVidia");
  355                 break;
  356         case PCI_EHCI_VENDORID_VIA:
  357                 sprintf(sc->sc_vendor, "VIA");
  358                 break;
  359         default:
  360                 if (bootverbose)
  361                         device_printf(self, "(New EHCI DeviceId=0x%08x)\n",
  362                             pci_get_devid(self));
  363                 sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self));
  364         }
  365 
  366 #if (__FreeBSD_version >= 700031)
  367         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  368             NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
  369 #else
  370         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  371             (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
  372 #endif
  373         if (err) {
  374                 device_printf(self, "Could not setup irq, %d\n", err);
  375                 sc->sc_intr_hdl = NULL;
  376                 goto error;
  377         }
  378         ehci_pci_take_controller(self);
  379 
  380         /* Undocumented quirks taken from Linux */
  381 
  382         switch (pci_get_vendor(self)) {
  383         case PCI_EHCI_VENDORID_ATI:
  384                 /* SB600 and SB700 EHCI quirk */
  385                 switch (pci_get_device(self)) {
  386                 case 0x4386:
  387                         ehci_pci_ati_quirk(self, 0);
  388                         break;
  389                 case 0x4396:
  390                         ehci_pci_ati_quirk(self, 1);
  391                         break;
  392                 default:
  393                         break;
  394                 }
  395                 break;
  396 
  397         case PCI_EHCI_VENDORID_VIA:
  398                 ehci_pci_via_quirk(self);
  399                 break;
  400 
  401         default:
  402                 break;
  403         }
  404 
  405         /* Dropped interrupts workaround */
  406         switch (pci_get_vendor(self)) {
  407         case PCI_EHCI_VENDORID_ATI:
  408         case PCI_EHCI_VENDORID_VIA:
  409                 sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG;
  410                 if (bootverbose)
  411                         device_printf(self,
  412                             "Dropped interrupts workaround enabled\n");
  413                 break;
  414         default:
  415                 break;
  416         }
  417 
  418         /* Doorbell feature workaround */
  419         switch (pci_get_vendor(self)) {
  420         case PCI_EHCI_VENDORID_NVIDIA:
  421         case PCI_EHCI_VENDORID_NVIDIA2:
  422                 sc->sc_flags |= EHCI_SCFLG_IAADBUG;
  423                 if (bootverbose)
  424                         device_printf(self,
  425                             "Doorbell workaround enabled\n");
  426                 break;
  427         default:
  428                 break;
  429         }
  430 
  431         err = ehci_init(sc);
  432         if (!err) {
  433                 err = device_probe_and_attach(sc->sc_bus.bdev);
  434         }
  435         if (err) {
  436                 device_printf(self, "USB init failed err=%d\n", err);
  437                 goto error;
  438         }
  439         return (0);
  440 
  441 error:
  442         ehci_pci_detach(self);
  443         return (ENXIO);
  444 }
  445 
  446 static int
  447 ehci_pci_detach(device_t self)
  448 {
  449         ehci_softc_t *sc = device_get_softc(self);
  450         device_t bdev;
  451 
  452         if (sc->sc_bus.bdev) {
  453                 bdev = sc->sc_bus.bdev;
  454                 device_detach(bdev);
  455                 device_delete_child(self, bdev);
  456         }
  457         /* during module unload there are lots of children leftover */
  458         device_delete_all_children(self);
  459 
  460         pci_disable_busmaster(self);
  461 
  462         if (sc->sc_irq_res && sc->sc_intr_hdl) {
  463                 /*
  464                  * only call ehci_detach() after ehci_init()
  465                  */
  466                 ehci_detach(sc);
  467 
  468                 int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
  469 
  470                 if (err)
  471                         /* XXX or should we panic? */
  472                         device_printf(self, "Could not tear down irq, %d\n",
  473                             err);
  474                 sc->sc_intr_hdl = NULL;
  475         }
  476         if (sc->sc_irq_res) {
  477                 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
  478                 sc->sc_irq_res = NULL;
  479         }
  480         if (sc->sc_io_res) {
  481                 bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM,
  482                     sc->sc_io_res);
  483                 sc->sc_io_res = NULL;
  484         }
  485         usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
  486 
  487         return (0);
  488 }
  489 
  490 static int
  491 ehci_pci_take_controller(device_t self)
  492 {
  493         ehci_softc_t *sc = device_get_softc(self);
  494         uint32_t cparams;
  495         uint32_t eec;
  496         uint16_t to;
  497         uint8_t eecp;
  498         uint8_t bios_sem;
  499 
  500         cparams = EREAD4(sc, EHCI_HCCPARAMS);
  501 
  502         /* Synchronise with the BIOS if it owns the controller. */
  503         for (eecp = EHCI_HCC_EECP(cparams); eecp != 0;
  504             eecp = EHCI_EECP_NEXT(eec)) {
  505                 eec = pci_read_config(self, eecp, 4);
  506                 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) {
  507                         continue;
  508                 }
  509                 bios_sem = pci_read_config(self, eecp +
  510                     EHCI_LEGSUP_BIOS_SEM, 1);
  511                 if (bios_sem == 0) {
  512                         continue;
  513                 }
  514                 device_printf(sc->sc_bus.bdev, "waiting for BIOS "
  515                     "to give up control\n");
  516                 pci_write_config(self, eecp +
  517                     EHCI_LEGSUP_OS_SEM, 1, 1);
  518                 to = 500;
  519                 while (1) {
  520                         bios_sem = pci_read_config(self, eecp +
  521                             EHCI_LEGSUP_BIOS_SEM, 1);
  522                         if (bios_sem == 0)
  523                                 break;
  524 
  525                         if (--to == 0) {
  526                                 device_printf(sc->sc_bus.bdev,
  527                                     "timed out waiting for BIOS\n");
  528                                 break;
  529                         }
  530                         usb_pause_mtx(NULL, hz / 100);  /* wait 10ms */
  531                 }
  532         }
  533         return (0);
  534 }
  535 
  536 static device_method_t ehci_pci_methods[] = {
  537         /* Device interface */
  538         DEVMETHOD(device_probe, ehci_pci_probe),
  539         DEVMETHOD(device_attach, ehci_pci_attach),
  540         DEVMETHOD(device_detach, ehci_pci_detach),
  541         DEVMETHOD(device_suspend, bus_generic_suspend),
  542         DEVMETHOD(device_resume, bus_generic_resume),
  543         DEVMETHOD(device_shutdown, bus_generic_shutdown),
  544         DEVMETHOD(usb_take_controller, ehci_pci_take_controller),
  545 
  546         DEVMETHOD_END
  547 };
  548 
  549 static driver_t ehci_driver = {
  550         .name = "ehci",
  551         .methods = ehci_pci_methods,
  552         .size = sizeof(struct ehci_softc),
  553 };
  554 
  555 static devclass_t ehci_devclass;
  556 
  557 DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0);
  558 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
