File:  [Qemu by Fabrice Bellard] / qemu / usb-bsd.c
Revision 1.1.1.4 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 18:33:47 2018 UTC (3 years, 1 month ago) by root
Branches: qemu, MAIN
CVS tags: qemu0150, qemu0141, qemu0140, HEAD
qemu 0.14.0

    1: /*
    2:  * BSD host USB redirector
    3:  *
    4:  * Copyright (c) 2006 Lonnie Mendez
    5:  * Portions of code and concepts borrowed from
    6:  * usb-linux.c and libusb's bsd.c and are copyright their respective owners.
    7:  *
    8:  * Permission is hereby granted, free of charge, to any person obtaining a copy
    9:  * of this software and associated documentation files (the "Software"), to deal
   10:  * in the Software without restriction, including without limitation the rights
   11:  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   12:  * copies of the Software, and to permit persons to whom the Software is
   13:  * furnished to do so, subject to the following conditions:
   14:  *
   15:  * The above copyright notice and this permission notice shall be included in
   16:  * all copies or substantial portions of the Software.
   17:  *
   18:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   19:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   20:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   21:  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   22:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   23:  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   24:  * THE SOFTWARE.
   25:  */
   26: 
   27: #include "qemu-common.h"
   28: #include "monitor.h"
   29: #include "hw/usb.h"
   30: 
   31: /* usb.h declares these */
   32: #undef USB_SPEED_HIGH
   33: #undef USB_SPEED_FULL
   34: #undef USB_SPEED_LOW
   35: 
   36: #include <sys/ioctl.h>
   37: #ifndef __DragonFly__
   38: #include <dev/usb/usb.h>
   39: #else
   40: #include <bus/usb/usb.h>
   41: #endif
   42: #include <signal.h>
   43: 
   44: /* This value has maximum potential at 16.
   45:  * You should also set hw.usb.debug to gain
   46:  * more detailed view.
   47:  */
   48: //#define DEBUG
   49: #define UGEN_DEBUG_LEVEL 0
   50: 
   51: 
   52: typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id,
   53:                         int vendor_id, int product_id,
   54:                         const char *product_name, int speed);
   55: static int usb_host_find_device(int *pbus_num, int *paddr,
   56:                                 const char *devname);
   57: 
   58: typedef struct USBHostDevice {
   59:     USBDevice dev;
   60:     int ep_fd[USB_MAX_ENDPOINTS];
   61:     int devfd;
   62:     char devpath[32];
   63: } USBHostDevice;
   64: 
   65: 
   66: #if 0
   67: static int ensure_ep_open(USBHostDevice *dev, int ep, int mode)
   68: {
   69:     char buf[32];
   70:     int fd;
   71: 
   72:     /* Get the address for this endpoint */
   73:     ep = UE_GET_ADDR(ep);
   74: 
   75:     if (dev->ep_fd[ep] < 0) {
   76: #if defined(__FreeBSD__) || defined(__DragonFly__)
   77:         snprintf(buf, sizeof(buf) - 1, "%s.%d", dev->devpath, ep);
   78: #else
   79:         snprintf(buf, sizeof(buf) - 1, "%s.%02d", dev->devpath, ep);
   80: #endif
   81:         /* Try to open it O_RDWR first for those devices which have in and out
   82:          * endpoints with the same address (eg 0x02 and 0x82)
   83:          */
   84:         fd = open(buf, O_RDWR);
   85:         if (fd < 0 && errno == ENXIO)
   86:             fd = open(buf, mode);
   87:         if (fd < 0) {
   88: #ifdef DEBUG
   89:             printf("ensure_ep_open: failed to open device endpoint %s: %s\n",
   90:                    buf, strerror(errno));
   91: #endif
   92:         }
   93:         dev->ep_fd[ep] = fd;
   94:     }
   95: 
   96:     return dev->ep_fd[ep];
   97: }
   98: 
   99: static void ensure_eps_closed(USBHostDevice *dev)
  100: {
  101:     int epnum = 1;
  102: 
  103:     if (!dev)
  104:         return;
  105: 
  106:     while (epnum < USB_MAX_ENDPOINTS) {
  107:         if (dev->ep_fd[epnum] >= 0) {
  108:             close(dev->ep_fd[epnum]);
  109:             dev->ep_fd[epnum] = -1;
  110:         }
  111:         epnum++;
  112:     }
  113: }
  114: #endif
  115: 
  116: static void usb_host_handle_reset(USBDevice *dev)
  117: {
  118: #if 0
  119:     USBHostDevice *s = (USBHostDevice *)dev;
  120: #endif
  121: }
  122: 
  123: #if 0
  124: /* XXX:
  125:  * -check device states against transfer requests
  126:  *  and return appropriate response
  127:  */
  128: static int usb_host_handle_control(USBDevice *dev,
  129:                                    int request,
  130:                                    int value,
  131:                                    int index,
  132:                                    int length,
  133:                                    uint8_t *data)
  134: {
  135:     USBHostDevice *s = (USBHostDevice *)dev;
  136:     struct usb_ctl_request req;
  137:     struct usb_alt_interface aiface;
  138:     int ret, timeout = 50;
  139: 
  140:     if ((request >> 8) == UT_WRITE_DEVICE &&
  141:         (request & 0xff) == UR_SET_ADDRESS) {
  142: 
  143:         /* specific SET_ADDRESS support */
  144:         dev->addr = value;
  145:         return 0;
  146:     } else if ((request >> 8) == UT_WRITE_DEVICE &&
  147:                (request & 0xff) == UR_SET_CONFIG) {
  148: 
  149:         ensure_eps_closed(s); /* can't do this without all eps closed */
  150: 
  151:         ret = ioctl(s->devfd, USB_SET_CONFIG, &value);
  152:         if (ret < 0) {
  153: #ifdef DEBUG
  154:             printf("handle_control: failed to set configuration - %s\n",
  155:                    strerror(errno));
  156: #endif
  157:             return USB_RET_STALL;
  158:         }
  159: 
  160:         return 0;
  161:     } else if ((request >> 8) == UT_WRITE_INTERFACE &&
  162:                (request & 0xff) == UR_SET_INTERFACE) {
  163: 
  164:         aiface.uai_interface_index = index;
  165:         aiface.uai_alt_no = value;
  166: 
  167:         ensure_eps_closed(s); /* can't do this without all eps closed */
  168:         ret = ioctl(s->devfd, USB_SET_ALTINTERFACE, &aiface);
  169:         if (ret < 0) {
  170: #ifdef DEBUG
  171:             printf("handle_control: failed to set alternate interface - %s\n",
  172:                    strerror(errno));
  173: #endif
  174:             return USB_RET_STALL;
  175:         }
  176: 
  177:         return 0;
  178:     } else {
  179:         req.ucr_request.bmRequestType = request >> 8;
  180:         req.ucr_request.bRequest = request & 0xff;
  181:         USETW(req.ucr_request.wValue, value);
  182:         USETW(req.ucr_request.wIndex, index);
  183:         USETW(req.ucr_request.wLength, length);
  184:         req.ucr_data = data;
  185:         req.ucr_flags = USBD_SHORT_XFER_OK;
  186: 
  187:         ret = ioctl(s->devfd, USB_SET_TIMEOUT, &timeout);
  188: #if defined(__NetBSD__) || defined(__OpenBSD__)
  189:         if (ret < 0 && errno != EINVAL) {
  190: #else
  191:         if (ret < 0) {
  192: #endif
  193: #ifdef DEBUG
  194:             printf("handle_control: setting timeout failed - %s\n",
  195:                    strerror(errno));
  196: #endif
  197:         }
  198: 
  199:         ret = ioctl(s->devfd, USB_DO_REQUEST, &req);
  200:         /* ugen returns EIO for usbd_do_request_ no matter what
  201:          * happens with the transfer */
  202:         if (ret < 0) {
  203: #ifdef DEBUG
  204:             printf("handle_control: error after request - %s\n",
  205:                    strerror(errno));
  206: #endif
  207:             return USB_RET_NAK; // STALL
  208:         } else {
  209:             return req.ucr_actlen;
  210:         }
  211:     }
  212: }
  213: 
  214: static int usb_host_handle_data(USBDevice *dev, USBPacket *p)
  215: {
  216:     USBHostDevice *s = (USBHostDevice *)dev;
  217:     int ret, fd, mode;
  218:     int one = 1, shortpacket = 0, timeout = 50;
  219:     sigset_t new_mask, old_mask;
  220:     uint8_t devep = p->devep;
  221: 
  222:     /* protect data transfers from SIGALRM signal */
  223:     sigemptyset(&new_mask);
  224:     sigaddset(&new_mask, SIGALRM);
  225:     sigprocmask(SIG_BLOCK, &new_mask, &old_mask);
  226: 
  227:     if (p->pid == USB_TOKEN_IN) {
  228:         devep |= 0x80;
  229:         mode = O_RDONLY;
  230:         shortpacket = 1;
  231:     } else {
  232:         mode = O_WRONLY;
  233:     }
  234: 
  235:     fd = ensure_ep_open(s, devep, mode);
  236:     if (fd < 0) {
  237:         sigprocmask(SIG_SETMASK, &old_mask, NULL);
  238:         return USB_RET_NODEV;
  239:     }
  240: 
  241:     if (ioctl(fd, USB_SET_TIMEOUT, &timeout) < 0) {
  242: #ifdef DEBUG
  243:         printf("handle_data: failed to set timeout - %s\n",
  244:                strerror(errno));
  245: #endif
  246:     }
  247: 
  248:     if (shortpacket) {
  249:         if (ioctl(fd, USB_SET_SHORT_XFER, &one) < 0) {
  250: #ifdef DEBUG
  251:             printf("handle_data: failed to set short xfer mode - %s\n",
  252:                    strerror(errno));
  253: #endif
  254:             sigprocmask(SIG_SETMASK, &old_mask, NULL);
  255:         }
  256:     }
  257: 
  258:     if (p->pid == USB_TOKEN_IN)
  259:         ret = read(fd, p->data, p->len);
  260:     else
  261:         ret = write(fd, p->data, p->len);
  262: 
  263:     sigprocmask(SIG_SETMASK, &old_mask, NULL);
  264: 
  265:     if (ret < 0) {
  266: #ifdef DEBUG
  267:         printf("handle_data: error after %s data - %s\n",
  268:                pid == USB_TOKEN_IN ? "reading" : "writing", strerror(errno));
  269: #endif
  270:         switch(errno) {
  271:         case ETIMEDOUT:
  272:         case EINTR:
  273:             return USB_RET_NAK;
  274:         default:
  275:             return USB_RET_STALL;
  276:         }
  277:     } else {
  278:         return ret;
  279:     }
  280: }
  281: #endif
  282: 
  283: static void usb_host_handle_destroy(USBDevice *opaque)
  284: {
  285:     USBHostDevice *s = (USBHostDevice *)opaque;
  286:     int i;
  287: 
  288:     for (i = 0; i < USB_MAX_ENDPOINTS; i++)
  289:         if (s->ep_fd[i] >= 0)
  290:             close(s->ep_fd[i]);
  291: 
  292:     if (s->devfd < 0)
  293:         return;
  294: 
  295:     close(s->devfd);
  296: 
  297:     qemu_free(s);
  298: }
  299: 
  300: static int usb_host_initfn(USBDevice *dev)
  301: {
  302:     return 0;
  303: }
  304: 
  305: USBDevice *usb_host_device_open(const char *devname)
  306: {
  307:     struct usb_device_info bus_info, dev_info;
  308:     USBDevice *d = NULL;
  309:     USBHostDevice *dev, *ret = NULL;
  310:     char ctlpath[PATH_MAX + 1];
  311:     char buspath[PATH_MAX + 1];
  312:     int bfd, dfd, bus, address, i;
  313:     int ugendebug = UGEN_DEBUG_LEVEL;
  314: 
  315:     if (usb_host_find_device(&bus, &address, devname) < 0) {
  316:         goto fail;
  317:     }
  318: 
  319:     snprintf(buspath, PATH_MAX, "/dev/usb%d", bus);
  320: 
  321:     bfd = open(buspath, O_RDWR);
  322:     if (bfd < 0) {
  323: #ifdef DEBUG
  324:         printf("usb_host_device_open: failed to open usb bus - %s\n",
  325:                strerror(errno));
  326: #endif
  327:         goto fail;
  328:     }
  329: 
  330:     bus_info.udi_addr = address;
  331:     if (ioctl(bfd, USB_DEVICEINFO, &bus_info) < 0) {
  332: #ifdef DEBUG
  333:         printf("usb_host_device_open: failed to grab bus information - %s\n",
  334:                strerror(errno));
  335: #endif
  336:         goto fail_bfd;
  337:     }
  338: 
  339: #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
  340:     snprintf(ctlpath, PATH_MAX, "/dev/%s", bus_info.udi_devnames[0]);
  341: #else
  342:     snprintf(ctlpath, PATH_MAX, "/dev/%s.00", bus_info.udi_devnames[0]);
  343: #endif
  344: 
  345:     dfd  = open(ctlpath, O_RDWR);
  346:     if (dfd < 0) {
  347:         dfd = open(ctlpath, O_RDONLY);
  348:         if (dfd < 0) {
  349: #ifdef DEBUG
  350:             printf("usb_host_device_open: failed to open usb device %s - %s\n",
  351:                    ctlpath, strerror(errno));
  352: #endif
  353:         }
  354:         goto fail_dfd;
  355:     }
  356: 
  357:     if (ioctl(dfd, USB_GET_DEVICEINFO, &dev_info) < 0) {
  358: #ifdef DEBUG
  359:         printf("usb_host_device_open: failed to grab device info - %s\n",
  360:                strerror(errno));
  361: #endif
  362:         goto fail_dfd;
  363:     }
  364: 
  365:     d = usb_create(NULL /* FIXME */, "usb-host");
  366:     dev = DO_UPCAST(USBHostDevice, dev, d);
  367: 
  368:     if (dev_info.udi_speed == 1) {
  369:         dev->dev.speed = USB_SPEED_LOW - 1;
  370:     } else {
  371:         dev->dev.speed = USB_SPEED_FULL - 1;
  372:     }
  373: 
  374:     if (strncmp(dev_info.udi_product, "product", 7) != 0) {
  375:         pstrcpy(dev->dev.product_desc, sizeof(dev->dev.product_desc),
  376:                 dev_info.udi_product);
  377:     } else {
  378:         snprintf(dev->dev.product_desc, sizeof(dev->dev.product_desc),
  379:                  "host:%s", devname);
  380:     }
  381: 
  382:     pstrcpy(dev->devpath, sizeof(dev->devpath), "/dev/");
  383:     pstrcat(dev->devpath, sizeof(dev->devpath), dev_info.udi_devnames[0]);
  384: 
  385:     /* Mark the endpoints as not yet open */
  386:     for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
  387:         dev->ep_fd[i] = -1;
  388:     }
  389: 
  390:     ioctl(dfd, USB_SETDEBUG, &ugendebug);
  391: 
  392:     ret = (USBDevice *)dev;
  393: 
  394: fail_dfd:
  395:     close(dfd);
  396: fail_bfd:
  397:     close(bfd);
  398: fail:
  399:     return ret;
  400: }
  401: 
  402: static struct USBDeviceInfo usb_host_dev_info = {
  403:     .product_desc   = "USB Host Device",
  404:     .qdev.name      = "usb-host",
  405:     .qdev.size      = sizeof(USBHostDevice),
  406:     .init           = usb_host_initfn,
  407:     .handle_packet  = usb_generic_handle_packet,
  408:     .handle_reset   = usb_host_handle_reset,
  409: #if 0
  410:     .handle_control = usb_host_handle_control,
  411:     .handle_data    = usb_host_handle_data,
  412: #endif
  413:     .handle_destroy = usb_host_handle_destroy,
  414: };
  415: 
  416: static void usb_host_register_devices(void)
  417: {
  418:     usb_qdev_register(&usb_host_dev_info);
  419: }
  420: device_init(usb_host_register_devices)
  421: 
  422: static int usb_host_scan(void *opaque, USBScanFunc *func)
  423: {
  424:     struct usb_device_info bus_info;
  425:     struct usb_device_info dev_info;
  426:     uint16_t vendor_id, product_id, class_id, speed;
  427:     int bfd, dfd, bus, address;
  428:     char busbuf[20], devbuf[20], product_name[256];
  429:     int ret = 0;
  430: 
  431:     for (bus = 0; bus < 10; bus++) {
  432: 
  433:         snprintf(busbuf, sizeof(busbuf) - 1, "/dev/usb%d", bus);
  434:         bfd = open(busbuf, O_RDWR);
  435:         if (bfd < 0)
  436: 	    continue;
  437: 
  438:         for (address = 1; address < 127; address++) {
  439: 
  440:             bus_info.udi_addr = address;
  441:             if (ioctl(bfd, USB_DEVICEINFO, &bus_info) < 0)
  442:                 continue;
  443: 
  444:             /* only list devices that can be used by generic layer */
  445:             if (strncmp(bus_info.udi_devnames[0], "ugen", 4) != 0)
  446:                 continue;
  447: 
  448: #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
  449:             snprintf(devbuf, sizeof(devbuf) - 1, "/dev/%s", bus_info.udi_devnames[0]);
  450: #else
  451:             snprintf(devbuf, sizeof(devbuf) - 1, "/dev/%s.00", bus_info.udi_devnames[0]);
  452: #endif
  453: 
  454:             dfd = open(devbuf, O_RDONLY);
  455:             if (dfd < 0) {
  456: #ifdef DEBUG
  457:                 printf("usb_host_scan: couldn't open device %s - %s\n", devbuf,
  458:                        strerror(errno));
  459: #endif
  460:                 continue;
  461:             }
  462: 
  463:             if (ioctl(dfd, USB_GET_DEVICEINFO, &dev_info) < 0)
  464:                 printf("usb_host_scan: couldn't get device information for %s - %s\n",
  465:                        devbuf, strerror(errno));
  466: 
  467:             // XXX: might need to fixup endianess of word values before copying over
  468: 
  469:             vendor_id = dev_info.udi_vendorNo;
  470:             product_id = dev_info.udi_productNo;
  471:             class_id = dev_info.udi_class;
  472:             speed = dev_info.udi_speed;
  473: 
  474:             if (strncmp(dev_info.udi_product, "product", 7) != 0)
  475:                 pstrcpy(product_name, sizeof(product_name),
  476:                         dev_info.udi_product);
  477:             else
  478:                 product_name[0] = '\0';
  479: 
  480:             ret = func(opaque, bus, address, class_id, vendor_id,
  481:                        product_id, product_name, speed);
  482: 
  483:             close(dfd);
  484: 
  485:             if (ret)
  486:                 goto the_end;
  487:         }
  488: 
  489:         close(bfd);
  490:     }
  491: 
  492: the_end:
  493:     return ret;
  494: }
  495: 
  496: typedef struct FindDeviceState {
  497:     int vendor_id;
  498:     int product_id;
  499:     int bus_num;
  500:     int addr;
  501: } FindDeviceState;
  502: 
  503: static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
  504:                                      int class_id,
  505:                                      int vendor_id, int product_id,
  506:                                      const char *product_name, int speed)
  507: {
  508:     FindDeviceState *s = opaque;
  509:     if (vendor_id == s->vendor_id &&
  510:         product_id == s->product_id) {
  511:         s->bus_num = bus_num;
  512:         s->addr = addr;
  513:         return 1;
  514:      } else {
  515:         return 0;
  516:      }
  517: }
  518: 
  519: 
  520: /* the syntax is :
  521:    'bus.addr' (decimal numbers) or
  522:    'vendor_id:product_id' (hexa numbers) */
  523: static int usb_host_find_device(int *pbus_num, int *paddr,
  524:                                 const char *devname)
  525: {
  526:     const char *p;
  527:     int ret;
  528:     FindDeviceState fs;
  529: 
  530:     p = strchr(devname, '.');
  531:     if (p) {
  532:         *pbus_num = strtoul(devname, NULL, 0);
  533:         *paddr = strtoul(p + 1, NULL, 0);
  534:         return 0;
  535:     }
  536:     p = strchr(devname, ':');
  537:     if (p) {
  538:         fs.vendor_id = strtoul(devname, NULL, 16);
  539:         fs.product_id = strtoul(p + 1, NULL, 16);
  540:         ret = usb_host_scan(&fs, usb_host_find_device_scan);
  541:         if (ret) {
  542:             *pbus_num = fs.bus_num;
  543:             *paddr = fs.addr;
  544:             return 0;
  545:         }
  546:      }
  547:      return -1;
  548: }
  549: 
  550: /**********************/
  551: /* USB host device info */
  552: 
  553: struct usb_class_info {
  554:     int class;
  555:     const char *class_name;
  556: };
  557: 
  558: static const struct usb_class_info usb_class_info[] = {
  559:     { USB_CLASS_AUDIO, "Audio"},
  560:     { USB_CLASS_COMM, "Communication"},
  561:     { USB_CLASS_HID, "HID"},
  562:     { USB_CLASS_HUB, "Hub" },
  563:     { USB_CLASS_PHYSICAL, "Physical" },
  564:     { USB_CLASS_PRINTER, "Printer" },
  565:     { USB_CLASS_MASS_STORAGE, "Storage" },
  566:     { USB_CLASS_CDC_DATA, "Data" },
  567:     { USB_CLASS_APP_SPEC, "Application Specific" },
  568:     { USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
  569:     { USB_CLASS_STILL_IMAGE, "Still Image" },
  570:     { USB_CLASS_CSCID, "Smart Card" },
  571:     { USB_CLASS_CONTENT_SEC, "Content Security" },
  572:     { -1, NULL }
  573: };
  574: 
  575: static const char *usb_class_str(uint8_t class)
  576: {
  577:     const struct usb_class_info *p;
  578:     for (p = usb_class_info; p->class != -1; p++) {
  579:         if (p->class == class)
  580:             break;
  581:     }
  582:     return p->class_name;
  583: }
  584: 
  585: static void usb_info_device(Monitor *mon, int bus_num, int addr, int class_id,
  586:                             int vendor_id, int product_id,
  587:                             const char *product_name,
  588:                             int speed)
  589: {
  590:     const char *class_str, *speed_str;
  591: 
  592:     switch(speed) {
  593:     case USB_SPEED_LOW:
  594:         speed_str = "1.5";
  595:         break;
  596:     case USB_SPEED_FULL:
  597:         speed_str = "12";
  598:         break;
  599:     case USB_SPEED_HIGH:
  600:         speed_str = "480";
  601:         break;
  602:     default:
  603:         speed_str = "?";
  604:         break;
  605:     }
  606: 
  607:     monitor_printf(mon, "  Device %d.%d, speed %s Mb/s\n",
  608:                    bus_num, addr, speed_str);
  609:     class_str = usb_class_str(class_id);
  610:     if (class_str)
  611:         monitor_printf(mon, "    %s:", class_str);
  612:     else
  613:         monitor_printf(mon, "    Class %02x:", class_id);
  614:     monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
  615:     if (product_name[0] != '\0')
  616:         monitor_printf(mon, ", %s", product_name);
  617:     monitor_printf(mon, "\n");
  618: }
  619: 
  620: static int usb_host_info_device(void *opaque,
  621:                                 int bus_num, int addr,
  622:                                 int class_id,
  623:                                 int vendor_id, int product_id,
  624:                                 const char *product_name,
  625:                                 int speed)
  626: {
  627:     Monitor *mon = opaque;
  628: 
  629:     usb_info_device(mon, bus_num, addr, class_id, vendor_id, product_id,
  630:                     product_name, speed);
  631:     return 0;
  632: }
  633: 
  634: void usb_host_info(Monitor *mon)
  635: {
  636:     usb_host_scan(mon, usb_host_info_device);
  637: }
  638: 
  639: /* XXX add this */
  640: int usb_host_device_close(const char *devname)
  641: {
  642:     return 0;
  643: }

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