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 0x1d268086:
  124                 return ("Intel Patsburg USB 2.0 controller");
  125         case 0x1d2d8086:
  126                 return ("Intel Patsburg USB 2.0 controller");
  127         case 0x1e268086:
  128                 return ("Intel Panther Point USB 2.0 controller");
  129         case 0x1e2d8086:
  130                 return ("Intel Panther Point USB 2.0 controller");
  131         case 0x1f2c8086:
  132                 return ("Intel Avoton 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         case 0x8c268086:
  162                 return ("Intel Lynx Point USB 2.0 controller USB-A");
  163         case 0x8c2d8086:
  164                 return ("Intel Lynx Point USB 2.0 controller USB-B");
  165         case 0x8ca68086:
  166                 return ("Intel Wildcat Point USB 2.0 controller USB-A");
  167         case 0x8cad8086:
  168                 return ("Intel Wildcat Point USB 2.0 controller USB-B");
  169 
  170         case 0x00e01033:
  171                 return ("NEC uPD 720100 USB 2.0 controller");
  172 
  173         case 0x006810de:
  174                 return "NVIDIA nForce2 USB 2.0 controller";
  175         case 0x008810de:
  176                 return "NVIDIA nForce2 Ultra 400 USB 2.0 controller";
  177         case 0x00d810de:
  178                 return "NVIDIA nForce3 USB 2.0 controller";
  179         case 0x00e810de:
  180                 return "NVIDIA nForce3 250 USB 2.0 controller";
  181         case 0x005b10de:
  182                 return "NVIDIA nForce CK804 USB 2.0 controller";
  183         case 0x036d10de:
  184                 return "NVIDIA nForce MCP55 USB 2.0 controller";
  185         case 0x03f210de:
  186                 return "NVIDIA nForce MCP61 USB 2.0 controller";
  187         case 0x0aa610de:
  188                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  189         case 0x0aa910de:
  190                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  191         case 0x0aaa10de:
  192                 return "NVIDIA nForce MCP79 USB 2.0 controller";
  193 
  194         case 0x15621131:
  195                 return "Philips ISP156x USB 2.0 controller";
  196 
  197         case 0x31041106:
  198                 return ("VIA VT6202 USB 2.0 controller");
  199 
  200         default:
  201                 break;
  202         }
  203 
  204         if ((pci_get_class(self) == PCIC_SERIALBUS)
  205             && (pci_get_subclass(self) == PCIS_SERIALBUS_USB)
  206             && (pci_get_progif(self) == PCI_INTERFACE_EHCI)) {
  207                 return ("EHCI (generic) USB 2.0 controller");
  208         }
  209         return (NULL);                  /* dunno */
  210 }
  211 
  212 static int
  213 ehci_pci_probe(device_t self)
  214 {
  215         const char *desc = ehci_pci_match(self);
  216 
  217         if (desc) {
  218                 device_set_desc(self, desc);
  219                 return (0);
  220         } else {
  221                 return (ENXIO);
  222         }
  223 }
  224 
  225 static void
  226 ehci_pci_ati_quirk(device_t self, uint8_t is_sb700)
  227 {
  228         device_t smbdev;
  229         uint32_t val;
  230 
  231         if (is_sb700) {
  232                 /* Lookup SMBUS PCI device */
  233                 smbdev = pci_find_device(PCI_EHCI_VENDORID_ATI, 0x4385);
  234                 if (smbdev == NULL)
  235                         return;
  236                 val = pci_get_revid(smbdev);
  237                 if (val != 0x3a && val != 0x3b)
  238                         return;
  239         }
  240 
  241         /*
  242          * Note: this bit is described as reserved in SB700
  243          * Register Reference Guide.
  244          */
  245         val = pci_read_config(self, 0x53, 1);
  246         if (!(val & 0x8)) {
  247                 val |= 0x8;
  248                 pci_write_config(self, 0x53, val, 1);
  249                 device_printf(self, "AMD SB600/700 quirk applied\n");
  250         }
  251 }
  252 
  253 static void
  254 ehci_pci_via_quirk(device_t self)
  255 {
  256         uint32_t val;
  257 
  258         if ((pci_get_device(self) == 0x3104) && 
  259             ((pci_get_revid(self) & 0xf0) == 0x60)) {
  260                 /* Correct schedule sleep time to 10us */
  261                 val = pci_read_config(self, 0x4b, 1);
  262                 if (val & 0x20)
  263                         return;
  264                 val |= 0x20;
  265                 pci_write_config(self, 0x4b, val, 1);
  266                 device_printf(self, "VIA-quirk applied\n");
  267         }
  268 }
  269 
  270 static int
  271 ehci_pci_attach(device_t self)
  272 {
  273         ehci_softc_t *sc = device_get_softc(self);
  274         int err;
  275         int rid;
  276 
  277         /* initialise some bus fields */
  278         sc->sc_bus.parent = self;
  279         sc->sc_bus.devices = sc->sc_devices;
  280         sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
  281         sc->sc_bus.dma_bits = 32;
  282 
  283         /* get all DMA memory */
  284         if (usb_bus_mem_alloc_all(&sc->sc_bus,
  285             USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
  286                 return (ENOMEM);
  287         }
  288 
  289         pci_enable_busmaster(self);
  290 
  291         switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) {
  292         case PCI_USB_REV_PRE_1_0:
  293         case PCI_USB_REV_1_0:
  294         case PCI_USB_REV_1_1:
  295                 /*
  296                  * NOTE: some EHCI USB controllers have the wrong USB
  297                  * revision number. It appears those controllers are
  298                  * fully compliant so we just ignore this value in
  299                  * some common cases.
  300                  */
  301                 device_printf(self, "pre-2.0 USB revision (ignored)\n");
  302                 /* fallthrough */
  303         case PCI_USB_REV_2_0:
  304                 break;
  305         default:
  306                 /* Quirk for Parallels Desktop 4.0 */
  307                 device_printf(self, "USB revision is unknown. Assuming v2.0.\n");
  308                 break;
  309         }
  310 
  311         rid = PCI_CBMEM;
  312         sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
  313             RF_ACTIVE);
  314         if (!sc->sc_io_res) {
  315                 device_printf(self, "Could not map memory\n");
  316                 goto error;
  317         }
  318         sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
  319         sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
  320         sc->sc_io_size = rman_get_size(sc->sc_io_res);
  321 
  322         rid = 0;
  323         sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
  324             RF_SHAREABLE | RF_ACTIVE);
  325         if (sc->sc_irq_res == NULL) {
  326                 device_printf(self, "Could not allocate irq\n");
  327                 goto error;
  328         }
  329         sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
  330         if (!sc->sc_bus.bdev) {
  331                 device_printf(self, "Could not add USB device\n");
  332                 goto error;
  333         }
  334         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
  335 
  336         /*
  337          * ehci_pci_match will never return NULL if ehci_pci_probe
  338          * succeeded
  339          */
  340         device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self));
  341         switch (pci_get_vendor(self)) {
  342         case PCI_EHCI_VENDORID_ACERLABS:
  343                 sprintf(sc->sc_vendor, "AcerLabs");
  344                 break;
  345         case PCI_EHCI_VENDORID_AMD:
  346                 sprintf(sc->sc_vendor, "AMD");
  347                 break;
  348         case PCI_EHCI_VENDORID_APPLE:
  349                 sprintf(sc->sc_vendor, "Apple");
  350                 break;
  351         case PCI_EHCI_VENDORID_ATI:
  352                 sprintf(sc->sc_vendor, "ATI");
  353                 break;
  354         case PCI_EHCI_VENDORID_CMDTECH:
  355                 sprintf(sc->sc_vendor, "CMDTECH");
  356                 break;
  357         case PCI_EHCI_VENDORID_INTEL:
  358                 sprintf(sc->sc_vendor, "Intel");
  359                 break;
  360         case PCI_EHCI_VENDORID_NEC:
  361                 sprintf(sc->sc_vendor, "NEC");
  362                 break;
  363         case PCI_EHCI_VENDORID_OPTI:
  364                 sprintf(sc->sc_vendor, "OPTi");
  365                 break;
  366         case PCI_EHCI_VENDORID_PHILIPS:
  367                 sprintf(sc->sc_vendor, "Philips");
  368                 break;
  369         case PCI_EHCI_VENDORID_SIS:
  370                 sprintf(sc->sc_vendor, "SiS");
  371                 break;
  372         case PCI_EHCI_VENDORID_NVIDIA:
  373         case PCI_EHCI_VENDORID_NVIDIA2:
  374                 sprintf(sc->sc_vendor, "nVidia");
  375                 break;
  376         case PCI_EHCI_VENDORID_VIA:
  377                 sprintf(sc->sc_vendor, "VIA");
  378                 break;
  379         default:
  380                 if (bootverbose)
  381                         device_printf(self, "(New EHCI DeviceId=0x%08x)\n",
  382                             pci_get_devid(self));
  383                 sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self));
  384         }
  385 
  386 #if (__FreeBSD_version >= 700031)
  387         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  388             NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
  389 #else
  390         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  391             (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
  392 #endif
  393         if (err) {
  394                 device_printf(self, "Could not setup irq, %d\n", err);
  395                 sc->sc_intr_hdl = NULL;
  396                 goto error;
  397         }
  398         ehci_pci_take_controller(self);
  399 
  400         /* Undocumented quirks taken from Linux */
  401 
  402         switch (pci_get_vendor(self)) {
  403         case PCI_EHCI_VENDORID_ATI:
  404                 /* SB600 and SB700 EHCI quirk */
  405                 switch (pci_get_device(self)) {
  406                 case 0x4386:
  407                         ehci_pci_ati_quirk(self, 0);
  408                         break;
  409                 case 0x4396:
  410                         ehci_pci_ati_quirk(self, 1);
  411                         break;
  412                 default:
  413                         break;
  414                 }
  415                 break;
  416 
  417         case PCI_EHCI_VENDORID_VIA:
  418                 ehci_pci_via_quirk(self);
  419                 break;
  420 
  421         default:
  422                 break;
  423         }
  424 
  425         /* Dropped interrupts workaround */
  426         switch (pci_get_vendor(self)) {
  427         case PCI_EHCI_VENDORID_ATI:
  428         case PCI_EHCI_VENDORID_VIA:
  429                 sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG;
  430                 if (bootverbose)
  431                         device_printf(self,
  432                             "Dropped interrupts workaround enabled\n");
  433                 break;
  434         default:
  435                 break;
  436         }
  437 
  438         /* Doorbell feature workaround */
  439         switch (pci_get_vendor(self)) {
  440         case PCI_EHCI_VENDORID_NVIDIA:
  441         case PCI_EHCI_VENDORID_NVIDIA2:
  442                 sc->sc_flags |= EHCI_SCFLG_IAADBUG;
  443                 if (bootverbose)
  444                         device_printf(self,
  445                             "Doorbell workaround enabled\n");
  446                 break;
  447         default:
  448                 break;
  449         }
  450 
  451         err = ehci_init(sc);
  452         if (!err) {
  453                 err = device_probe_and_attach(sc->sc_bus.bdev);
  454         }
  455         if (err) {
  456                 device_printf(self, "USB init failed err=%d\n", err);
  457                 goto error;
  458         }
  459         return (0);
  460 
  461 error:
  462         ehci_pci_detach(self);
  463         return (ENXIO);
  464 }
  465 
  466 static int
  467 ehci_pci_detach(device_t self)
  468 {
  469         ehci_softc_t *sc = device_get_softc(self);
  470 
  471         /* during module unload there are lots of children leftover */
  472         device_delete_children(self);
  473 
  474         pci_disable_busmaster(self);
  475 
  476         if (sc->sc_irq_res && sc->sc_intr_hdl) {
  477                 /*
  478                  * only call ehci_detach() after ehci_init()
  479                  */
  480                 ehci_detach(sc);
  481 
  482                 int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
  483 
  484                 if (err)
  485                         /* XXX or should we panic? */
  486                         device_printf(self, "Could not tear down irq, %d\n",
  487                             err);
  488                 sc->sc_intr_hdl = NULL;
  489         }
  490         if (sc->sc_irq_res) {
  491                 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
  492                 sc->sc_irq_res = NULL;
  493         }
  494         if (sc->sc_io_res) {
  495                 bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM,
  496                     sc->sc_io_res);
  497                 sc->sc_io_res = NULL;
  498         }
  499         usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
  500 
  501         return (0);
  502 }
  503 
  504 static int
  505 ehci_pci_take_controller(device_t self)
  506 {
  507         ehci_softc_t *sc = device_get_softc(self);
  508         uint32_t cparams;
  509         uint32_t eec;
  510         uint16_t to;
  511         uint8_t eecp;
  512         uint8_t bios_sem;
  513 
  514         cparams = EREAD4(sc, EHCI_HCCPARAMS);
  515 
  516         /* Synchronise with the BIOS if it owns the controller. */
  517         for (eecp = EHCI_HCC_EECP(cparams); eecp != 0;
  518             eecp = EHCI_EECP_NEXT(eec)) {
  519                 eec = pci_read_config(self, eecp, 4);
  520                 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) {
  521                         continue;
  522                 }
  523                 bios_sem = pci_read_config(self, eecp +
  524                     EHCI_LEGSUP_BIOS_SEM, 1);
  525                 if (bios_sem == 0) {
  526                         continue;
  527                 }
  528                 device_printf(sc->sc_bus.bdev, "waiting for BIOS "
  529                     "to give up control\n");
  530                 pci_write_config(self, eecp +
  531                     EHCI_LEGSUP_OS_SEM, 1, 1);
  532                 to = 500;
  533                 while (1) {
  534                         bios_sem = pci_read_config(self, eecp +
  535                             EHCI_LEGSUP_BIOS_SEM, 1);
  536                         if (bios_sem == 0)
  537                                 break;
  538 
  539                         if (--to == 0) {
  540                                 device_printf(sc->sc_bus.bdev,
  541                                     "timed out waiting for BIOS\n");
  542                                 break;
  543                         }
  544                         usb_pause_mtx(NULL, hz / 100);  /* wait 10ms */
  545                 }
  546         }
  547         return (0);
  548 }
  549 
  550 static device_method_t ehci_pci_methods[] = {
  551         /* Device interface */
  552         DEVMETHOD(device_probe, ehci_pci_probe),
  553         DEVMETHOD(device_attach, ehci_pci_attach),
  554         DEVMETHOD(device_detach, ehci_pci_detach),
  555         DEVMETHOD(device_suspend, bus_generic_suspend),
  556         DEVMETHOD(device_resume, bus_generic_resume),
  557         DEVMETHOD(device_shutdown, bus_generic_shutdown),
  558         DEVMETHOD(usb_take_controller, ehci_pci_take_controller),
  559 
  560         DEVMETHOD_END
  561 };
  562 
  563 static driver_t ehci_driver = {
  564         .name = "ehci",
  565         .methods = ehci_pci_methods,
  566         .size = sizeof(struct ehci_softc),
  567 };
  568 
  569 static devclass_t ehci_devclass;
  570 
  571 DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0);
  572 MODULE_DEPEND(ehci, usb, 1, 1, 1);
Cache object: 5eb44b2520ae6adc4f963222de96129a
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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
