sys/dev/usbmisc/ugen/ugen.c

   1 /*
   2  * $NetBSD: ugen.c,v 1.27 1999/10/28 12:08:38 augustss Exp $
   3  * $NetBSD: ugen.c,v 1.59 2002/07/11 21:14:28 augustss Exp $
   4  * $FreeBSD: src/sys/dev/usb/ugen.c,v 1.81 2003/11/09 09:17:22 tanimura Exp $
   5  * $DragonFly: src/sys/dev/usbmisc/ugen/ugen.c,v 1.34 2008/05/13 08:35:12 hasso Exp $
   6  */
   7
   8 /*
   9  * Also already merged from NetBSD:
  10  *      $NetBSD: ugen.c,v 1.61 2002/09/23 05:51:20 simonb Exp $
  11  *      $NetBSD: ugen.c,v 1.64 2003/06/28 14:21:46 darrenr Exp $
  12  *      $NetBSD: ugen.c,v 1.65 2003/06/29 22:30:56 fvdl Exp $
  13  */
  14
  15 /*
  16  * Copyright (c) 1998 The NetBSD Foundation, Inc.
  17  * All rights reserved.
  18  *
  19  * This code is derived from software contributed to The NetBSD Foundation
  20  * by Lennart Augustsson (lennart@augustsson.net) at
  21  * Carlstedt Research & Technology.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the above copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *        This product includes software developed by the NetBSD
  34  *        Foundation, Inc. and its contributors.
  35  * 4. Neither the name of The NetBSD Foundation nor the names of its
  36  *    contributors may be used to endorse or promote products derived
  37  *    from this software without specific prior written permission.
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  40  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  41  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  43  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  44  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  45  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  46  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  47  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  48  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  49  * POSSIBILITY OF SUCH DAMAGE.
  50  */
  51
  52
  53 #include <sys/param.h>
  54 #include <sys/systm.h>
  55 #include <sys/kernel.h>
  56 #include <sys/malloc.h>
  57 #include <sys/module.h>
  58 #include <sys/bus.h>
  59 #include <sys/conf.h>
  60 #include <sys/fcntl.h>
  61 #include <sys/filio.h>
  62 #include <sys/tty.h>
  63 #include <sys/file.h>
  64 #include <sys/select.h>
  65 #include <sys/vnode.h>
  66 #include <sys/poll.h>
  67 #include <sys/sysctl.h>
  68 #include <sys/thread2.h>
  69
  70 #include <bus/usb/usb.h>
  71 #include <bus/usb/usbdi.h>
  72 #include <bus/usb/usbdi_util.h>
  73
  74 #include "ugenbuf.h"
  75
  76 SYSCTL_NODE(_hw_usb, OID_AUTO, ugen, CTLFLAG_RW, 0, "USB ugen");
  77
  78 #ifdef USB_DEBUG
  79 #define DPRINTF(x)      if (ugendebug) kprintf x
  80 #define DPRINTFN(n,x)   if (ugendebug>(n)) kprintf x
  81 int     ugendebug = 0;
  82 SYSCTL_INT(_hw_usb_ugen, OID_AUTO, debug, CTLFLAG_RW,
  83            &ugendebug, 0, "ugen debug level");
  84 #else
  85 #define DPRINTF(x)
  86 #define DPRINTFN(n,x)
  87 #endif
  88
  89 static int ugen_bufsize = 16384;
  90 SYSCTL_INT(_hw_usb_ugen, OID_AUTO, bufsize, CTLFLAG_RW,
  91            &ugen_bufsize, 0, "ugen temporary buffer size");
  92
  93 #define UGEN_CHUNK      128     /* chunk size for read */
  94 #define UGEN_IBSIZE     1020    /* buffer size */
  95
  96 #define UGEN_NISOFRAMES 500     /* 0.5 seconds worth */
  97 #define UGEN_NISOREQS   6       /* number of outstanding xfer requests */
  98 #define UGEN_NISORFRMS  4       /* number of frames (miliseconds) per req */
  99
 100 struct ugen_endpoint {
 101         struct ugen_softc *sc;
 102         cdev_t dev;
 103         usb_endpoint_descriptor_t *edesc;
 104         usbd_interface_handle iface;
 105         int state;
 106 #define UGEN_ASLP       0x02    /* waiting for data */
 107 #define UGEN_SHORT_OK   0x04    /* short xfers are OK */
 108         usbd_pipe_handle pipeh;
 109         struct clist q;
 110         struct selinfo rsel;
 111         u_char *ibuf;           /* start of buffer (circular for isoc) */
 112         u_char *fill;           /* location for input (isoc) */
 113         u_char *limit;          /* end of circular buffer (isoc) */
 114         u_char *cur;            /* current read location (isoc) */
 115         u_int32_t timeout;
 116         struct isoreq {
 117                 struct ugen_endpoint *sce;
 118                 usbd_xfer_handle xfer;
 119                 void *dmabuf;
 120                 u_int16_t sizes[UGEN_NISORFRMS];
 121         } isoreqs[UGEN_NISOREQS];
 122 };
 123
 124 struct ugen_softc {
 125         device_t sc_dev;                /* base device */
 126         usbd_device_handle sc_udev;
 127
 128         char sc_is_open[USB_MAX_ENDPOINTS];
 129         struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2];
 130 #define OUT 0
 131 #define IN  1
 132
 133         int sc_refcnt;
 134         u_char sc_dying;
 135 };
 136
 137 d_open_t  ugenopen;
 138 d_close_t ugenclose;
 139 d_read_t  ugenread;
 140 d_write_t ugenwrite;
 141 d_ioctl_t ugenioctl;
 142 d_poll_t  ugenpoll;
 143
 144 #define UGEN_CDEV_MAJOR 114
 145
 146 static struct dev_ops ugen_ops = {
 147         { "ugen", UGEN_CDEV_MAJOR, 0 },
 148         .d_open =       ugenopen,
 149         .d_close =      ugenclose,
 150         .d_read =       ugenread,
 151         .d_write =      ugenwrite,
 152         .d_ioctl =      ugenioctl,
 153         .d_poll =       ugenpoll,
 154 };
 155
 156 static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr,
 157                             usbd_status status);
 158 static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr,
 159                             usbd_status status);
 160 static int ugen_do_read(struct ugen_softc *, int, struct uio *, int);
 161 static int ugen_do_write(struct ugen_softc *, int, struct uio *, int);
 162 static int ugen_do_ioctl(struct ugen_softc *, int, u_long,
 163                             caddr_t, int);
 164 static void ugen_make_devnodes(struct ugen_softc *sc);
 165 static void ugen_destroy_devnodes(struct ugen_softc *sc);
 166 static int ugen_set_config(struct ugen_softc *sc, int configno);
 167 static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc,
 168                                                 int index, int *lenp);
 169 static usbd_status ugen_set_interface(struct ugen_softc *, int, int);
 170 static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx);
 171
 172 #define UGENUNIT(n) ((lminor(n) >> 4) & 0xff)
 173 #define UGENENDPOINT(n) (minor(n) & 0xf)
 174 #define UGENMINOR(u, e) (((u & 0xf) << 4) | ((u & 0xf0) << 12) | (e))
 175 #define UGENUNITMASK    0xffff00f0
 176
 177 static device_probe_t ugen_match;
 178 static device_attach_t ugen_attach;
 179 static device_detach_t ugen_detach;
 180
 181 static devclass_t ugen_devclass;
 182
 183 static kobj_method_t ugen_methods[] = {
 184         DEVMETHOD(device_probe, ugen_match),
 185         DEVMETHOD(device_attach, ugen_attach),
 186         DEVMETHOD(device_detach, ugen_detach),
 187         {0,0}
 188 };
 189
 190 static driver_t ugen_driver = {
 191         "ugen",
 192         ugen_methods,
 193         sizeof(struct ugen_softc)
 194 };
 195
 196 MODULE_DEPEND(ugen, usb, 1, 1, 1);
 197
 198 static int
 199 ugen_match(device_t self)
 200 {
 201         struct usb_attach_arg *uaa = device_get_ivars(self);
 202
 203 #if 0
 204         if (uaa->matchlvl)
 205                 return (uaa->matchlvl);
 206 #endif
 207         if (uaa->usegeneric)
 208                 return (UMATCH_GENERIC);
 209         else
 210                 return (UMATCH_NONE);
 211 }
 212
 213 static int
 214 ugen_attach(device_t self)
 215 {
 216         struct ugen_softc *sc = device_get_softc(self);
 217         struct usb_attach_arg *uaa = device_get_ivars(self);
 218         usbd_device_handle udev;
 219         usbd_status err;
 220         int conf;
 221
 222         sc->sc_dev = self;
 223         sc->sc_udev = udev = uaa->device;
 224
 225         memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints);
 226
 227         /* First set configuration index 0, the default one for ugen. */
 228         err = usbd_set_config_index(udev, 0, 0);
 229         if (err) {
 230                 kprintf("%s: setting configuration index 0 failed\n",
 231                        device_get_nameunit(sc->sc_dev));
 232                 sc->sc_dying = 1;
 233                 return ENXIO;
 234         }
 235         conf = usbd_get_config_descriptor(udev)->bConfigurationValue;
 236
 237         /* Set up all the local state for this configuration. */
 238         err = ugen_set_config(sc, conf);
 239         if (err) {
 240                 kprintf("%s: setting configuration %d failed\n",
 241                        device_get_nameunit(sc->sc_dev), conf);
 242                 sc->sc_dying = 1;
 243                 return ENXIO;
 244         }
 245
 246         /* the main device, ctrl endpoint */
 247         make_dev(&ugen_ops, UGENMINOR(device_get_unit(sc->sc_dev), 0),
 248                  UID_ROOT, GID_OPERATOR, 0644,
 249                  "%s", device_get_nameunit(sc->sc_dev));
 250
 251         usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev);
 252         return 0;
 253 }
 254
 255 static void
 256 ugen_make_devnodes(struct ugen_softc *sc)
 257 {
 258         int endptno;
 259         cdev_t dev;
 260
 261         for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
 262                 if (sc->sc_endpoints[endptno][IN].sc != NULL ||
 263                     sc->sc_endpoints[endptno][OUT].sc != NULL ) {
 264                         /* endpt can be 0x81 and 0x01, representing
 265                          * endpoint address 0x01 and IN/OUT directions.
 266                          * We map both endpts to the same device,
 267                          * IN is reading from it, OUT is writing to it.
 268                          *
 269                          * In the if clause above we check whether one
 270                          * of the structs is populated.
 271                          */
 272                         dev = make_dev(&ugen_ops,
 273                                 UGENMINOR(device_get_unit(sc->sc_dev), endptno),
 274                                 UID_ROOT, GID_OPERATOR, 0644,
 275                                 "%s.%d",
 276                                 device_get_nameunit(sc->sc_dev), endptno);
 277                         if (sc->sc_endpoints[endptno][IN].sc != NULL) {
 278                                 reference_dev(dev);
 279                                 if (sc->sc_endpoints[endptno][IN].dev)
 280                                         release_dev(sc->sc_endpoints[endptno][IN].dev);
 281                                 sc->sc_endpoints[endptno][IN].dev = dev;
 282                         }
 283                         if (sc->sc_endpoints[endptno][OUT].sc != NULL) {
 284                                 reference_dev(dev);
 285                                 if (sc->sc_endpoints[endptno][OUT].dev)
 286                                         release_dev(sc->sc_endpoints[endptno][OUT].dev);
 287                                 sc->sc_endpoints[endptno][OUT].dev = dev;
 288                         }
 289                 }
 290         }
 291 }
 292
 293 static void
 294 ugen_destroy_devnodes(struct ugen_softc *sc)
 295 {
 296         int endptno, prev_sc_dying;
 297         cdev_t dev;
 298
 299         prev_sc_dying = sc->sc_dying;
 300         sc->sc_dying = 1;
 301
 302         /* destroy all devices for the other (existing) endpoints as well */
 303         for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
 304                 if (sc->sc_endpoints[endptno][IN].sc != NULL ||
 305                     sc->sc_endpoints[endptno][OUT].sc != NULL ) {
 306                         /* endpt can be 0x81 and 0x01, representing
 307                          * endpoint address 0x01 and IN/OUT directions.
 308                          * We map both endpoint addresses to the same device,
 309                          * IN is reading from it, OUT is writing to it.
 310                          *
 311                          * In the if clause above we check whether one
 312                          * of the structs is populated.
 313                          */
 314                         dev = sc->sc_endpoints[endptno][IN].dev;
 315                         if (dev != NULL) {
 316                                 destroy_dev(dev);
 317                                 sc->sc_endpoints[endptno][IN].dev = NULL;
 318                         }
 319                         dev = sc->sc_endpoints[endptno][OUT].dev;
 320                         if (dev != NULL) {
 321                                 destroy_dev(dev);
 322                                 sc->sc_endpoints[endptno][OUT].dev = NULL;
 323                         }
 324                 }
 325         }
 326         sc->sc_dying = prev_sc_dying;
 327 }
 328
 329 static int
 330 ugen_set_config(struct ugen_softc *sc, int configno)
 331 {
 332         usbd_device_handle dev = sc->sc_udev;
 333         usbd_interface_handle iface;
 334         usb_endpoint_descriptor_t *ed;
 335         struct ugen_endpoint *sce;
 336         u_int8_t niface, nendpt;
 337         int ifaceno, endptno, endpt;
 338         usbd_status err;
 339         int dir;
 340
 341         DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n",
 342                     device_get_nameunit(sc->sc_dev), configno, sc));
 343
 344         ugen_destroy_devnodes(sc);
 345
 346         /* We start at 1, not 0, because we don't care whether the
 347          * control endpoint is open or not. It is always present.
 348          */
 349         for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
 350                 if (sc->sc_is_open[endptno]) {
 351                         DPRINTFN(1,
 352                              ("ugen_set_config: %s - endpoint %d is open\n",
 353                               device_get_nameunit(sc->sc_dev), endptno));
 354                         return (USBD_IN_USE);
 355                 }
 356         }
 357
 358         /* Avoid setting the current value. */
 359         if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) {
 360                 err = usbd_set_config_no(dev, configno, 1);
 361                 if (err)
 362                         return (err);
 363         }
 364
 365         err = usbd_interface_count(dev, &niface);
 366         if (err)
 367                 return (err);
 368         memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints);
 369         for (ifaceno = 0; ifaceno < niface; ifaceno++) {
 370                 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno));
 371                 err = usbd_device2interface_handle(dev, ifaceno, &iface);
 372                 if (err)
 373                         return (err);
 374                 err = usbd_endpoint_count(iface, &nendpt);
 375                 if (err)
 376                         return (err);
 377                 for (endptno = 0; endptno < nendpt; endptno++) {
 378                         ed = usbd_interface2endpoint_descriptor(iface,endptno);
 379                         endpt = ed->bEndpointAddress;
 380                         dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
 381                         sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
 382                         DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x"
 383                                     "(%d,%d), sce=%p\n",
 384                                     endptno, endpt, UE_GET_ADDR(endpt),
 385                                     UE_GET_DIR(endpt), sce));
 386                         sce->sc = sc;
 387                         sce->edesc = ed;
 388                         sce->iface = iface;
 389                 }
 390         }
 391
 392         ugen_make_devnodes(sc);
 393
 394         return (USBD_NORMAL_COMPLETION);
 395 }
 396
 397 int
 398 ugenopen(struct dev_open_args *ap)
 399 {
 400         cdev_t dev = ap->a_head.a_dev;
 401         struct ugen_softc *sc;
 402         int unit = UGENUNIT(dev);
 403         int endpt = UGENENDPOINT(dev);
 404         usb_endpoint_descriptor_t *edesc;
 405         struct ugen_endpoint *sce;
 406         int dir, isize;
 407         usbd_status err;
 408         usbd_xfer_handle xfer;
 409         void *buf;
 410         int i, j;
 411
 412         sc = devclass_get_softc(ugen_devclass, unit);
 413         if (sc == NULL)
 414                 return (ENXIO);
 415
 416         DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n",
 417                      ap->a_oflags, ap->a_devtype, unit, endpt));
 418
 419         if (sc->sc_dying)
 420                 return (ENXIO);
 421
 422         if (sc->sc_is_open[endpt])
 423                 return (EBUSY);
 424
 425         if (endpt == USB_CONTROL_ENDPOINT) {
 426                 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1;
 427                 return (0);
 428         }
 429
 430         /* Make sure there are pipes for all directions. */
 431         for (dir = OUT; dir <= IN; dir++) {
 432                 if (ap->a_oflags & (dir == OUT ? FWRITE : FREAD)) {
 433                         sce = &sc->sc_endpoints[endpt][dir];
 434                         if (sce == 0 || sce->edesc == 0)
 435                                 return (ENXIO);
 436                 }
 437         }
 438
 439         /* Actually open the pipes. */
 440         /* XXX Should back out properly if it fails. */
 441         for (dir = OUT; dir <= IN; dir++) {
 442                 if (!(ap->a_oflags & (dir == OUT ? FWRITE : FREAD)))
 443                         continue;
 444                 sce = &sc->sc_endpoints[endpt][dir];
 445                 sce->state = 0;
 446                 sce->timeout = USBD_NO_TIMEOUT;
 447                 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n",
 448                              sc, endpt, dir, sce));
 449                 edesc = sce->edesc;
 450                 switch (edesc->bmAttributes & UE_XFERTYPE) {
 451                 case UE_INTERRUPT:
 452                         if (dir == OUT) {
 453                                 err = usbd_open_pipe(sce->iface,
 454                                     edesc->bEndpointAddress, 0, &sce->pipeh);
 455                                 if (err)
 456                                         return (EIO);
 457                                 break;
 458                         }
 459                         isize = UGETW(edesc->wMaxPacketSize);
 460                         if (isize == 0) /* shouldn't happen */
 461                                 return (EINVAL);
 462                         sce->ibuf = kmalloc(isize, M_USBDEV, M_WAITOK);
 463                         DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n",
 464                                      endpt, isize));
 465                         if ((clist_alloc_cblocks(&sce->q, UGEN_IBSIZE,
 466                                                  UGEN_IBSIZE), 0) == -1)
 467                                 return (ENOMEM);
 468                         err = usbd_open_pipe_intr(sce->iface,
 469                                 edesc->bEndpointAddress,
 470                                 USBD_SHORT_XFER_OK, &sce->pipeh, sce,
 471                                 sce->ibuf, isize, ugenintr,
 472                                 USBD_DEFAULT_INTERVAL);
 473                         if (err) {
 474                                 kfree(sce->ibuf, M_USBDEV);
 475                                 clist_free_cblocks(&sce->q);
 476                                 return (EIO);
 477                         }
 478                         DPRINTFN(5, ("ugenopen: interrupt open done\n"));
 479                         break;
 480                 case UE_BULK:
 481                         err = usbd_open_pipe(sce->iface,
 482                                   edesc->bEndpointAddress, 0, &sce->pipeh);
 483                         if (err)
 484                                 return (EIO);
 485                         break;
 486                 case UE_ISOCHRONOUS:
 487                         if (dir == OUT)
 488                                 return (EINVAL);
 489                         isize = UGETW(edesc->wMaxPacketSize);
 490                         if (isize == 0) /* shouldn't happen */
 491                                 return (EINVAL);
 492                         sce->ibuf = kmalloc(isize * UGEN_NISOFRAMES,
 493                                 M_USBDEV, M_WAITOK);
 494                         sce->cur = sce->fill = sce->ibuf;
 495                         sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES;
 496                         DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n",
 497                                      endpt, isize));
 498                         err = usbd_open_pipe(sce->iface,
 499                                   edesc->bEndpointAddress, 0, &sce->pipeh);
 500                         if (err) {
 501                                 kfree(sce->ibuf, M_USBDEV);
 502                                 return (EIO);
 503                         }
 504                         for(i = 0; i < UGEN_NISOREQS; ++i) {
 505                                 sce->isoreqs[i].sce = sce;
 506                                 xfer = usbd_alloc_xfer(sc->sc_udev);
 507                                 if (xfer == 0)
 508                                         goto bad;
 509                                 sce->isoreqs[i].xfer = xfer;
 510                                 buf = usbd_alloc_buffer
 511                                         (xfer, isize * UGEN_NISORFRMS);
 512                                 if (buf == 0) {
 513                                         i++;
 514                                         goto bad;
 515                                 }
 516                                 sce->isoreqs[i].dmabuf = buf;
 517                                 for(j = 0; j < UGEN_NISORFRMS; ++j)
 518                                         sce->isoreqs[i].sizes[j] = isize;
 519                                 usbd_setup_isoc_xfer
 520                                         (xfer, sce->pipeh, &sce->isoreqs[i],
 521                                          sce->isoreqs[i].sizes,
 522                                          UGEN_NISORFRMS, USBD_NO_COPY,
 523                                          ugen_isoc_rintr);
 524                                 (void)usbd_transfer(xfer);
 525                         }
 526                         DPRINTFN(5, ("ugenopen: isoc open done\n"));
 527                         break;
 528                 bad:
 529                         while (--i >= 0) /* implicit buffer free */
 530                                 usbd_free_xfer(sce->isoreqs[i].xfer);
 531                         return (ENOMEM);
 532                 case UE_CONTROL:
 533                         sce->timeout = USBD_DEFAULT_TIMEOUT;
 534                         return (EINVAL);
 535                 }
 536         }
 537         sc->sc_is_open[endpt] = 1;
 538         return (0);
 539 }
 540
 541 int
 542 ugenclose(struct dev_close_args *ap)
 543 {
 544         cdev_t dev = ap->a_head.a_dev;
 545         int endpt = UGENENDPOINT(dev);
 546         struct ugen_softc *sc;
 547         struct ugen_endpoint *sce;
 548         int dir;
 549         int i;
 550
 551         sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
 552
 553         DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n",
 554                      ap->a_fflag, ap->a_devtype, UGENUNIT(dev), endpt));
 555
 556 #ifdef DIAGNOSTIC
 557         if (!sc->sc_is_open[endpt]) {
 558                 kprintf("ugenclose: not open\n");
 559                 return (EINVAL);
 560         }
 561 #endif
 562
 563         if (endpt == USB_CONTROL_ENDPOINT) {
 564                 DPRINTFN(5, ("ugenclose: close control\n"));
 565                 sc->sc_is_open[endpt] = 0;
 566                 return (0);
 567         }
 568
 569         for (dir = OUT; dir <= IN; dir++) {
 570                 if (!(ap->a_fflag & (dir == OUT ? FWRITE : FREAD)))
 571                         continue;
 572                 sce = &sc->sc_endpoints[endpt][dir];
 573                 if (sce->pipeh == NULL)
 574                         continue;
 575                 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n",
 576                              endpt, dir, sce));
 577
 578                 usbd_abort_pipe(sce->pipeh);
 579                 usbd_close_pipe(sce->pipeh);
 580                 sce->pipeh = NULL;
 581
 582                 switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
 583                 case UE_INTERRUPT:
 584                         ndflush(&sce->q, sce->q.c_cc);
 585                         clist_free_cblocks(&sce->q);
 586                         break;
 587                 case UE_ISOCHRONOUS:
 588                         for (i = 0; i < UGEN_NISOREQS; ++i)
 589                                 usbd_free_xfer(sce->isoreqs[i].xfer);
 590                 default:
 591                         break;
 592                 }
 593
 594                 if (sce->ibuf != NULL) {
 595                         kfree(sce->ibuf, M_USBDEV);
 596                         sce->ibuf = NULL;
 597                         clist_free_cblocks(&sce->q);
 598                 }
 599         }
 600         sc->sc_is_open[endpt] = 0;
 601
 602         return (0);
 603 }
 604
 605 static int
 606 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag)
 607 {
 608         struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN];
 609         u_int32_t n, tn;
 610         char *buf;
 611         usbd_xfer_handle xfer;
 612         usbd_status err;
 613         int error = 0;
 614         int ugen_bbsize;
 615         u_char buffer[UGEN_CHUNK];
 616
 617         DPRINTFN(5, ("%s: ugenread: %d\n", device_get_nameunit(sc->sc_dev), endpt));
 618
 619         if (sc->sc_dying)
 620                 return (EIO);
 621
 622         if (endpt == USB_CONTROL_ENDPOINT)
 623                 return (ENODEV);
 624
 625 #ifdef DIAGNOSTIC
 626         if (sce->edesc == NULL) {
 627                 kprintf("ugenread: no edesc\n");
 628                 return (EIO);
 629         }
 630         if (sce->pipeh == NULL) {
 631                 kprintf("ugenread: no pipe\n");
 632                 return (EIO);
 633         }
 634 #endif
 635
 636         buf = getugenbuf(ugen_bufsize, &ugen_bbsize);
 637
 638         switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
 639         case UE_INTERRUPT:
 640                 /* Block until activity occurred. */
 641                 crit_enter();
 642                 while (sce->q.c_cc == 0) {
 643                         if (flag & IO_NDELAY) {
 644                                 crit_exit();
 645                                 error = EWOULDBLOCK;
 646                                 goto done;
 647                         }
 648                         sce->state |= UGEN_ASLP;
 649                         DPRINTFN(5, ("ugenread: sleep on %p\n", sce));
 650                         error = tsleep(sce, PCATCH, "ugenri",
 651                             (sce->timeout * hz + 999) / 1000);
 652                         sce->state &= ~UGEN_ASLP;
 653                         DPRINTFN(5, ("ugenread: woke, error=%d\n", error));
 654                         if (sc->sc_dying)
 655                                 error = EIO;
 656                         if (error == EAGAIN) {
 657                                 error = 0;      /* timeout, return 0 bytes */
 658                                 break;
 659                         }
 660                         if (error)
 661                                 break;
 662                 }
 663                 crit_exit();
 664
 665                 /* Transfer as many chunks as possible. */
 666                 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) {
 667                         n = szmin(sce->q.c_cc, uio->uio_resid);
 668                         if (n > sizeof(buffer))
 669                                 n = sizeof(buffer);
 670
 671                         /* Remove a small chunk from the input queue. */
 672                         q_to_b(&sce->q, buffer, n);
 673                         DPRINTFN(5, ("ugenread: got %d chars\n", n));
 674
 675                         /* Copy the data to the user process. */
 676                         error = uiomove(buffer, n, uio);
 677                         if (error)
 678                                 break;
 679                 }
 680                 break;
 681         case UE_BULK:
 682                 xfer = usbd_alloc_xfer(sc->sc_udev);
 683                 if (xfer == 0) {
 684                         error = ENOMEM;
 685                         goto done;
 686                 }
 687                 while ((n = szmin(ugen_bbsize, uio->uio_resid)) != 0) {
 688                         DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n));
 689                         tn = n;
 690                         err = usbd_bulk_transfer(
 691                                 xfer, sce->pipeh,
 692                                 sce->state & UGEN_SHORT_OK ?
 693                                     USBD_SHORT_XFER_OK : 0,
 694                                 sce->timeout, buf, &tn, "ugenrb");
 695                         if (err) {
 696                                 if (err == USBD_INTERRUPTED)
 697                                         error = EINTR;
 698                                 else if (err == USBD_TIMEOUT)
 699                                         error = ETIMEDOUT;
 700                                 else
 701                                         error = EIO;
 702                                 break;
 703                         }
 704                         DPRINTFN(1, ("ugenread: got %d bytes\n", tn));
 705                         error = uiomove(buf, tn, uio);
 706                         if (error || tn < n)
 707                                 break;
 708                 }
 709                 usbd_free_xfer(xfer);
 710                 break;
 711         case UE_ISOCHRONOUS:
 712                 crit_enter();
 713                 while (sce->cur == sce->fill) {
 714                         if (flag & IO_NDELAY) {
 715                                 crit_exit();
 716                                 error = EWOULDBLOCK;
 717                                 goto done;
 718                         }
 719                         sce->state |= UGEN_ASLP;
 720                         DPRINTFN(5, ("ugenread: sleep on %p\n", sce));
 721                         error = tsleep(sce, PCATCH, "ugenri",
 722                             (sce->timeout * hz + 999) / 1000);
 723                         sce->state &= ~UGEN_ASLP;
 724                         DPRINTFN(5, ("ugenread: woke, error=%d\n", error));
 725                         if (sc->sc_dying)
 726                                 error = EIO;
 727                         if (error == EAGAIN) {
 728                                 error = 0;      /* timeout, return 0 bytes */
 729                                 break;
 730                         }
 731                         if (error)
 732                                 break;
 733                 }
 734
 735                 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) {
 736                         if (sce->fill > sce->cur)
 737                                 n = szmin(sce->fill - sce->cur, uio->uio_resid);
 738                         else
 739                                 n = szmin(sce->limit- sce->cur, uio->uio_resid);
 740
 741                         DPRINTFN(5, ("ugenread: isoc got %d chars\n", n));
 742
 743                         /* Copy the data to the user process. */
 744                         error = uiomove(sce->cur, n, uio);
 745                         if (error)
 746                                 break;
 747                         sce->cur += n;
 748                         if(sce->cur >= sce->limit)
 749                                 sce->cur = sce->ibuf;
 750                 }
 751                 crit_exit();
 752                 break;
 753
 754
 755         default:
 756                 error = ENXIO;
 757                 break;
 758         }
 759 done:
 760         relugenbuf(buf, ugen_bbsize);
 761         return (error);
 762 }
 763
 764 int
 765 ugenread(struct dev_read_args *ap)
 766 {
 767         cdev_t dev = ap->a_head.a_dev;
 768         int endpt = UGENENDPOINT(dev);
 769         struct ugen_softc *sc;
 770         int error;
 771
 772         sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
 773
 774         if (sc->sc_dying)
 775                 return (EIO);
 776
 777         sc->sc_refcnt++;
 778         error = ugen_do_read(sc, endpt, ap->a_uio, ap->a_ioflag);
 779         if (--sc->sc_refcnt < 0)
 780                 usb_detach_wakeup(sc->sc_dev);
 781         return (error);
 782 }
 783
 784 static int
 785 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, int flag)
 786 {
 787         struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT];
 788         u_int32_t n;
 789         int error = 0;
 790         int ugen_bbsize;
 791         char *buf;
 792         usbd_xfer_handle xfer;
 793         usbd_status err;
 794
 795         DPRINTFN(5, ("%s: ugenwrite: %d\n", device_get_nameunit(sc->sc_dev), endpt));
 796
 797         if (sc->sc_dying)
 798                 return (EIO);
 799
 800         if (endpt == USB_CONTROL_ENDPOINT)
 801                 return (ENODEV);
 802
 803 #ifdef DIAGNOSTIC
 804         if (sce->edesc == NULL) {
 805                 kprintf("ugenwrite: no edesc\n");
 806                 return (EIO);
 807         }
 808         if (sce->pipeh == NULL) {
 809                 kprintf("ugenwrite: no pipe\n");
 810                 return (EIO);
 811         }
 812 #endif
 813
 814         buf = getugenbuf(ugen_bufsize, &ugen_bbsize);
 815
 816         switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
 817         case UE_BULK:
 818                 xfer = usbd_alloc_xfer(sc->sc_udev);
 819                 if (xfer == 0) {
 820                         error = EIO;
 821                         goto done;
 822                 }
 823                 while ((n = szmin(ugen_bbsize, uio->uio_resid)) != 0) {
 824                         error = uiomove(buf, n, uio);
 825                         if (error)
 826                                 break;
 827                         DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n));
 828                         err = usbd_bulk_transfer(xfer, sce->pipeh, 0,
 829                                   sce->timeout, buf, &n,"ugenwb");
 830                         if (err) {
 831                                 if (err == USBD_INTERRUPTED)
 832                                         error = EINTR;
 833                                 else if (err == USBD_TIMEOUT)
 834                                         error = ETIMEDOUT;
 835                                 else
 836                                         error = EIO;
 837                                 break;
 838                         }
 839                 }
 840                 usbd_free_xfer(xfer);
 841                 break;
 842         case UE_INTERRUPT:
 843                 xfer = usbd_alloc_xfer(sc->sc_udev);
 844                 if (xfer == 0) {
 845                         error = EIO;
 846                         goto done;
 847                 }
 848                 while ((n = szmin(UGETW(sce->edesc->wMaxPacketSize),
 849                                 uio->uio_resid)) != 0) {
 850                         error = uiomove(buf, n, uio);
 851                         if (error)
 852                                 break;
 853                         DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n));
 854                         err = usbd_intr_transfer(xfer, sce->pipeh, 0,
 855                                   sce->timeout, buf, &n,"ugenwi");
 856                         if (err) {
 857                                 if (err == USBD_INTERRUPTED)
 858                                         error = EINTR;
 859                                 else if (err == USBD_TIMEOUT)
 860                                         error = ETIMEDOUT;
 861                                 else
 862                                         error = EIO;
 863                                 break;
 864                         }
 865                 }
 866                 usbd_free_xfer(xfer);
 867                 break;
 868         default:
 869                 error = ENXIO;
 870                 break;
 871         }
 872 done:
 873         relugenbuf(buf, ugen_bbsize);
 874         return (error);
 875 }
 876
 877 int
 878 ugenwrite(struct dev_write_args *ap)
 879 {
 880         cdev_t dev = ap->a_head.a_dev;
 881         int endpt = UGENENDPOINT(dev);
 882         struct ugen_softc *sc;
 883         int error;
 884
 885         sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
 886
 887         if (sc->sc_dying)
 888                 return (EIO);
 889
 890         sc->sc_refcnt++;
 891         error = ugen_do_write(sc, endpt, ap->a_uio, ap->a_ioflag);
 892         if (--sc->sc_refcnt < 0)
 893                 usb_detach_wakeup(sc->sc_dev);
 894         return (error);
 895 }
 896
 897 static int
 898 ugen_detach(device_t self)
 899 {
 900         struct ugen_softc *sc = device_get_softc(self);
 901         struct ugen_endpoint *sce;
 902         int i, dir;
 903
 904         DPRINTF(("ugen_detach: sc=%p\n", sc));
 905
 906         sc->sc_dying = 1;
 907         /* Abort all pipes.  Causes processes waiting for transfer to wake. */
 908         for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
 909                 for (dir = OUT; dir <= IN; dir++) {
 910                         sce = &sc->sc_endpoints[i][dir];
 911                         if (sce && sce->pipeh)
 912                                 usbd_abort_pipe(sce->pipeh);
 913                         selwakeup(&sce->rsel);
 914                 }
 915         }
 916         crit_enter();
 917         if (--sc->sc_refcnt >= 0) {
 918                 /* Wake everyone */
 919                 for (i = 0; i < USB_MAX_ENDPOINTS; i++)
 920                         wakeup(&sc->sc_endpoints[i][IN]);
 921                 /* Wait for processes to go away. */
 922                 usb_detach_wait(sc->sc_dev);
 923         }
 924         crit_exit();
 925
 926         /* destroy the device for the control endpoint */
 927         ugen_destroy_devnodes(sc);
 928         kprintf("devfs: Please check that only the right ugen devices were removed !!!\n");
 929         dev_ops_remove_minor(&ugen_ops,
 930                     /*UGENUNITMASK,*/ UGENMINOR(device_get_unit(sc->sc_dev), 0));
 931         usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev);
 932         return (0);
 933 }
 934
 935 static void
 936 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
 937 {
 938         struct ugen_endpoint *sce = addr;
 939         /*struct ugen_softc *sc = sce->sc;*/
 940         u_int32_t count;
 941         u_char *ibuf;
 942
 943         if (status == USBD_CANCELLED)
 944                 return;
 945
 946         if (status != USBD_NORMAL_COMPLETION) {
 947                 DPRINTF(("ugenintr: status=%d\n", status));
 948                 if (status == USBD_STALLED)
 949                     usbd_clear_endpoint_stall_async(sce->pipeh);
 950                 return;
 951         }
 952
 953         usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
 954         ibuf = sce->ibuf;
 955
 956         DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n",
 957                      xfer, status, count));
 958         DPRINTFN(5, ("          data = %02x %02x %02x\n",
 959                      ibuf[0], ibuf[1], ibuf[2]));
 960
 961         (void)b_to_q(ibuf, count, &sce->q);
 962
 963         if (sce->state & UGEN_ASLP) {
 964                 sce->state &= ~UGEN_ASLP;
 965                 DPRINTFN(5, ("ugen_intr: waking %p\n", sce));
 966                 wakeup(sce);
 967         }
 968         selwakeup(&sce->rsel);
 969 }
 970
 971 static void
 972 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr,
 973                 usbd_status status)
 974 {
 975         struct isoreq *req = addr;
 976         struct ugen_endpoint *sce = req->sce;
 977         u_int32_t count, n;
 978         int i, isize;
 979
 980         /* Return if we are aborting. */
 981         if (status == USBD_CANCELLED)
 982                 return;
 983
 984         usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
 985         DPRINTFN(5,("ugen_isoc_rintr: xfer %d, count=%d\n",
 986                     (int)(req - sce->isoreqs),
 987                     count));
 988
 989         /* throw away oldest input if the buffer is full */
 990         if(sce->fill < sce->cur && sce->cur <= sce->fill + count) {
 991                 sce->cur += count;
 992                 if(sce->cur >= sce->limit)
 993                         sce->cur = sce->ibuf + (sce->limit - sce->cur);
 994                 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n",
 995                              count));
 996         }
 997
 998         isize = UGETW(sce->edesc->wMaxPacketSize);
 999         for (i = 0; i < UGEN_NISORFRMS; i++) {
1000                 u_int32_t actlen = req->sizes[i];
1001                 char const *buf = (char const *)req->dmabuf + isize * i;
1002
1003                 /* copy data to buffer */
1004                 while (actlen > 0) {
1005                         n = min(actlen, sce->limit - sce->fill);
1006                         memcpy(sce->fill, buf, n);
1007
1008                         buf += n;
1009                         actlen -= n;
1010                         sce->fill += n;
1011                         if(sce->fill == sce->limit)
1012                                 sce->fill = sce->ibuf;
1013                 }
1014
1015                 /* setup size for next transfer */
1016                 req->sizes[i] = isize;
1017         }
1018
1019         usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS,
1020                              USBD_NO_COPY, ugen_isoc_rintr);
1021         (void)usbd_transfer(xfer);
1022
1023         if (sce->state & UGEN_ASLP) {
1024                 sce->state &= ~UGEN_ASLP;
1025                 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce));
1026                 wakeup(sce);
1027         }
1028         selwakeup(&sce->rsel);
1029 }
1030
1031 static usbd_status
1032 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno)
1033 {
1034         usbd_interface_handle iface;
1035         usb_endpoint_descriptor_t *ed;
1036         usbd_status err;
1037         struct ugen_endpoint *sce;
1038         u_int8_t niface, nendpt, endptno, endpt;
1039         int dir;
1040
1041         DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno));
1042
1043         err = usbd_interface_count(sc->sc_udev, &niface);
1044         if (err)
1045                 return (err);
1046         if (ifaceidx < 0 || ifaceidx >= niface)
1047                 return (USBD_INVAL);
1048
1049         err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface);
1050         if (err)
1051                 return (err);
1052         err = usbd_endpoint_count(iface, &nendpt);
1053         if (err)
1054                 return (err);
1055
1056         /* destroy the existing devices, we remake the new ones in a moment */
1057         ugen_destroy_devnodes(sc);
1058
1059         /* XXX should only do this after setting new altno has succeeded */
1060         for (endptno = 0; endptno < nendpt; endptno++) {
1061                 ed = usbd_interface2endpoint_descriptor(iface,endptno);
1062                 endpt = ed->bEndpointAddress;
1063                 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
1064                 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
1065                 sce->sc = 0;
1066                 sce->edesc = 0;
1067                 sce->iface = 0;
1068         }
1069
1070         /* change setting */
1071         err = usbd_set_interface(iface, altno);
1072         if (err)
1073                 return (err);
1074
1075         err = usbd_endpoint_count(iface, &nendpt);
1076         if (err)
1077                 return (err);
1078         for (endptno = 0; endptno < nendpt; endptno++) {
1079                 ed = usbd_interface2endpoint_descriptor(iface,endptno);
1080                 endpt = ed->bEndpointAddress;
1081                 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
1082                 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
1083                 sce->sc = sc;
1084                 sce->edesc = ed;
1085                 sce->iface = iface;
1086         }
1087
1088         /* make the new devices */
1089         ugen_make_devnodes(sc);
1090
1091         return (0);
1092 }
1093
1094 /* Retrieve a complete descriptor for a certain device and index. */
1095 static usb_config_descriptor_t *
1096 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp)
1097 {
1098         usb_config_descriptor_t *cdesc, *tdesc, cdescr;
1099         int len;
1100         usbd_status err;
1101
1102         if (index == USB_CURRENT_CONFIG_INDEX) {
1103                 tdesc = usbd_get_config_descriptor(sc->sc_udev);
1104                 len = UGETW(tdesc->wTotalLength);
1105                 if (lenp)
1106                         *lenp = len;
1107                 cdesc = kmalloc(len, M_TEMP, M_INTWAIT);
1108                 memcpy(cdesc, tdesc, len);
1109                 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len));
1110         } else {
1111                 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr);
1112                 if (err)
1113                         return (0);
1114                 len = UGETW(cdescr.wTotalLength);
1115                 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len));
1116                 if (lenp)
1117                         *lenp = len;
1118                 cdesc = kmalloc(len, M_TEMP, M_INTWAIT);
1119                 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len);
1120                 if (err) {
1121                         kfree(cdesc, M_TEMP);
1122                         return (0);
1123                 }
1124         }
1125         return (cdesc);
1126 }
1127
1128 static int
1129 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx)
1130 {
1131         usbd_interface_handle iface;
1132         usbd_status err;
1133
1134         err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface);
1135         if (err)
1136                 return (-1);
1137         return (usbd_get_interface_altindex(iface));
1138 }
1139
1140 static int
1141 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd,
1142               caddr_t addr, int flag)
1143 {
1144         struct ugen_endpoint *sce;
1145         usbd_status err;
1146         usbd_interface_handle iface;
1147         struct usb_config_desc *cd;
1148         usb_config_descriptor_t *cdesc;
1149         struct usb_interface_desc *id;
1150         usb_interface_descriptor_t *idesc;
1151         struct usb_endpoint_desc *ed;
1152         usb_endpoint_descriptor_t *edesc;
1153         struct usb_alt_interface *ai;
1154         struct usb_string_desc *si;
1155         u_int8_t conf, alt;
1156
1157         DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd));
1158         if (sc->sc_dying)
1159                 return (EIO);
1160
1161         switch (cmd) {
1162         case USB_SET_SHORT_XFER:
1163                 /* This flag only affects read */
1164                 if (endpt == USB_CONTROL_ENDPOINT)
1165                         return (EINVAL);
1166                 sce = &sc->sc_endpoints[endpt][IN];
1167
1168                 if (sce->pipeh == NULL) {
1169                         kprintf("ugenioctl: USB_SET_SHORT_XFER, no pipe\n");
1170                         return (EIO);
1171                 }
1172
1173                 if (*(int *)addr)
1174                         sce->state |= UGEN_SHORT_OK;
1175                 else
1176                         sce->state &= ~UGEN_SHORT_OK;
1177                 return (0);
1178         case USB_SET_TIMEOUT:
1179                 sce = &sc->sc_endpoints[endpt][IN];
1180                 sce->timeout = *(int *)addr;
1181                 sce = &sc->sc_endpoints[endpt][OUT];
1182                 sce->timeout = *(int *)addr;
1183                 return (0);
1184         default:
1185                 break;
1186         }
1187
1188         if (endpt != USB_CONTROL_ENDPOINT)
1189                 return (EINVAL);
1190
1191         switch (cmd) {
1192 #ifdef USB_DEBUG
1193         case USB_SETDEBUG:
1194                 ugendebug = *(int *)addr;
1195                 break;
1196 #endif
1197         case USB_GET_CONFIG:
1198                 err = usbd_get_config(sc->sc_udev, &conf);
1199                 if (err)
1200                         return (EIO);
1201                 *(int *)addr = conf;
1202                 break;
1203         case USB_SET_CONFIG:
1204                 if (!(flag & FWRITE))
1205                         return (EPERM);
1206                 err = ugen_set_config(sc, *(int *)addr);
1207                 switch (err) {
1208                 case USBD_NORMAL_COMPLETION:
1209                         break;
1210                 case USBD_IN_USE:
1211                         return (EBUSY);
1212                 default:
1213                         return (EIO);
1214                 }
1215                 break;
1216         case USB_GET_ALTINTERFACE:
1217                 ai = (struct usb_alt_interface *)addr;
1218                 err = usbd_device2interface_handle(sc->sc_udev,
1219                           ai->uai_interface_index, &iface);
1220                 if (err)
1221                         return (EINVAL);
1222                 idesc = usbd_get_interface_descriptor(iface);
1223                 if (idesc == NULL)
1224                         return (EIO);
1225                 ai->uai_alt_no = idesc->bAlternateSetting;
1226                 break;
1227         case USB_SET_ALTINTERFACE:
1228                 if (!(flag & FWRITE))
1229                         return (EPERM);
1230                 ai = (struct usb_alt_interface *)addr;
1231                 err = usbd_device2interface_handle(sc->sc_udev,
1232                           ai->uai_interface_index, &iface);
1233                 if (err)
1234                         return (EINVAL);
1235                 err = ugen_set_interface(sc, ai->uai_interface_index, ai->uai_alt_no);
1236                 if (err)
1237                         return (EINVAL);
1238                 break;
1239         case USB_GET_NO_ALT:
1240                 ai = (struct usb_alt_interface *)addr;
1241                 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0);
1242                 if (cdesc == NULL)
1243                         return (EINVAL);
1244                 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0);
1245                 if (idesc == NULL) {
1246                         kfree(cdesc, M_TEMP);
1247                         return (EINVAL);
1248                 }
1249                 ai->uai_alt_no = usbd_get_no_alts(cdesc, idesc->bInterfaceNumber);
1250                 kfree(cdesc, M_TEMP);
1251                 break;
1252         case USB_GET_DEVICE_DESC:
1253                 *(usb_device_descriptor_t *)addr =
1254                         *usbd_get_device_descriptor(sc->sc_udev);
1255                 break;
1256         case USB_GET_CONFIG_DESC:
1257                 cd = (struct usb_config_desc *)addr;
1258                 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0);
1259                 if (cdesc == NULL)
1260                         return (EINVAL);
1261                 cd->ucd_desc = *cdesc;
1262                 kfree(cdesc, M_TEMP);
1263                 break;
1264         case USB_GET_INTERFACE_DESC:
1265                 id = (struct usb_interface_desc *)addr;
1266                 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0);
1267                 if (cdesc == NULL)
1268                         return (EINVAL);
1269                 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX &&
1270                     id->uid_alt_index == USB_CURRENT_ALT_INDEX)
1271                         alt = ugen_get_alt_index(sc, id->uid_interface_index);
1272                 else
1273                         alt = id->uid_alt_index;
1274                 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt);
1275                 if (idesc == NULL) {
1276                         kfree(cdesc, M_TEMP);
1277                         return (EINVAL);
1278                 }
1279                 id->uid_desc = *idesc;
1280                 kfree(cdesc, M_TEMP);
1281                 break;
1282         case USB_GET_ENDPOINT_DESC:
1283                 ed = (struct usb_endpoint_desc *)addr;
1284                 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0);
1285                 if (cdesc == NULL)
1286                         return (EINVAL);
1287                 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX &&
1288                     ed->ued_alt_index == USB_CURRENT_ALT_INDEX)
1289                         alt = ugen_get_alt_index(sc, ed->ued_interface_index);
1290                 else
1291                         alt = ed->ued_alt_index;
1292                 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index,
1293                                         alt, ed->ued_endpoint_index);
1294                 if (edesc == NULL) {
1295                         kfree(cdesc, M_TEMP);
1296                         return (EINVAL);
1297                 }
1298                 ed->ued_desc = *edesc;
1299                 kfree(cdesc, M_TEMP);
1300                 break;
1301         case USB_GET_FULL_DESC:
1302         {
1303                 int len;
1304                 struct iovec iov;
1305                 struct uio uio;
1306                 struct usb_full_desc *fd = (struct usb_full_desc *)addr;
1307                 int error;
1308
1309                 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len);
1310                 if (len > fd->ufd_size)
1311                         len = fd->ufd_size;
1312                 iov.iov_base = (caddr_t)fd->ufd_data;
1313                 iov.iov_len = len;
1314                 uio.uio_iov = &iov;
1315                 uio.uio_iovcnt = 1;
1316                 uio.uio_resid = len;
1317                 uio.uio_offset = 0;
1318                 uio.uio_segflg = UIO_USERSPACE;
1319                 uio.uio_rw = UIO_READ;
1320                 uio.uio_td = curthread;
1321                 error = uiomove((void *)cdesc, len, &uio);
1322                 kfree(cdesc, M_TEMP);
1323                 return (error);
1324         }
1325         case USB_GET_STRING_DESC:
1326         {
1327                 int size;
1328
1329                 si = (struct usb_string_desc *)addr;
1330                 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index,
1331                           si->usd_language_id, &si->usd_desc, &size);
1332                 if (err)
1333                         return (EINVAL);
1334                 break;
1335         }
1336         case USB_DO_REQUEST:
1337         {
1338                 struct usb_ctl_request *ur = (void *)addr;
1339                 int len = UGETW(ur->ucr_request.wLength);
1340                 struct iovec iov;
1341                 struct uio uio;
1342                 void *ptr = 0;
1343                 usbd_status err;
1344                 int error = 0;
1345
1346                 if (!(flag & FWRITE))
1347                         return (EPERM);
1348                 /* Avoid requests that would damage the bus integrity. */
1349                 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE &&
1350                      ur->ucr_request.bRequest == UR_SET_ADDRESS) ||
1351                     (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE &&
1352                      ur->ucr_request.bRequest == UR_SET_CONFIG) ||
1353                     (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE &&
1354                      ur->ucr_request.bRequest == UR_SET_INTERFACE))
1355                         return (EINVAL);
1356
1357                 if (len < 0 || len > 32767)
1358                         return (EINVAL);
1359                 if (len != 0) {
1360                         iov.iov_base = (caddr_t)ur->ucr_data;
1361                         iov.iov_len = len;
1362                         uio.uio_iov = &iov;
1363                         uio.uio_iovcnt = 1;
1364                         uio.uio_resid = len;
1365                         uio.uio_offset = 0;
1366                         uio.uio_segflg = UIO_USERSPACE;
1367                         uio.uio_rw =
1368                                 ur->ucr_request.bmRequestType & UT_READ ?
1369                                 UIO_READ : UIO_WRITE;
1370                         uio.uio_td = curthread;
1371                         ptr = kmalloc(len, M_TEMP, M_WAITOK);
1372                         if (uio.uio_rw == UIO_WRITE) {
1373                                 error = uiomove(ptr, len, &uio);
1374                                 if (error)
1375                                         goto ret;
1376                         }
1377                 }
1378                 sce = &sc->sc_endpoints[endpt][IN];
1379                 err = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request,
1380                           ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout);
1381                 if (err) {
1382                         error = EIO;
1383                         goto ret;
1384                 }
1385                 if (len != 0) {
1386                         if (uio.uio_rw == UIO_READ) {
1387                                 error = uiomove(ptr, len, &uio);
1388                                 if (error)
1389                                         goto ret;
1390                         }
1391                 }
1392         ret:
1393                 if (ptr)
1394                         kfree(ptr, M_TEMP);
1395                 return (error);
1396         }
1397         case USB_GET_DEVICEINFO:
1398                 usbd_fill_deviceinfo(sc->sc_udev,
1399                     (struct usb_device_info *)addr, 1);
1400                 break;
1401         default:
1402                 return (EINVAL);
1403         }
1404         return (0);
1405 }
1406
1407 int
1408 ugenioctl(struct dev_ioctl_args *ap)
1409 {
1410         cdev_t dev = ap->a_head.a_dev;
1411         int endpt = UGENENDPOINT(dev);
1412         struct ugen_softc *sc;
1413         int error;
1414
1415         sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
1416         if (sc->sc_dying)
1417                 return (EIO);
1418
1419         sc->sc_refcnt++;
1420         error = ugen_do_ioctl(sc, endpt, ap->a_cmd, ap->a_data, ap->a_fflag);
1421         if (--sc->sc_refcnt < 0)
1422                 usb_detach_wakeup(sc->sc_dev);
1423         return (error);
1424 }
1425
1426 int
1427 ugenpoll(struct dev_poll_args *ap)
1428 {
1429         cdev_t dev = ap->a_head.a_dev;
1430         struct ugen_softc *sc;
1431         struct ugen_endpoint *sce_in, *sce_out;
1432         usb_endpoint_descriptor_t *edesc;
1433         int revents = 0;
1434
1435         sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
1436
1437         if (sc->sc_dying) {
1438                 return ((ap->a_events & (POLLIN | POLLOUT | POLLRDNORM |
1439                         POLLWRNORM)) | POLLHUP);
1440         }
1441
1442         /* Do not allow to poll a control endpoint */
1443         if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) {
1444                 return (ap->a_events & (POLLIN | POLLOUT | POLLRDNORM |
1445                         POLLWRNORM));
1446         }
1447
1448         sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN];
1449         sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT];
1450         edesc = (sce_in->edesc != NULL) ? sce_in->edesc : sce_out->edesc;
1451         KASSERT(edesc != NULL, ("ugenpoll: NULL edesc"));
1452
1453         if (sce_in->edesc == NULL || sce_in->pipeh == NULL)
1454                 sce_in = NULL;
1455         if (sce_out->edesc == NULL || sce_out->pipeh == NULL)
1456                 sce_out = NULL;
1457
1458         crit_enter();
1459         switch (edesc->bmAttributes & UE_XFERTYPE) {
1460         case UE_INTERRUPT:
1461                 if (sce_in != NULL && (ap->a_events & (POLLIN | POLLRDNORM))) {
1462                         if (sce_in->q.c_cc > 0)
1463                                 revents |= ap->a_events & (POLLIN | POLLRDNORM);
1464                         else
1465                                 selrecord(curthread, &sce_in->rsel);
1466                 }
1467                 if (sce_out != NULL && (ap->a_events & (POLLOUT | POLLWRNORM))) {
1468                         if (sce_out->q.c_cc > 0)
1469                                 revents |= ap->a_events & (POLLOUT | POLLWRNORM);
1470                         else
1471                                 selrecord(curthread, &sce_out->rsel);
1472                 }
1473                 break;
1474         case UE_ISOCHRONOUS:
1475                 if (sce_in != NULL && (ap->a_events & (POLLIN | POLLRDNORM))) {
1476                         if (sce_in->cur != sce_in->fill)
1477                                 revents |= ap->a_events & (POLLIN | POLLRDNORM);
1478                         else
1479                                 selrecord(curthread, &sce_in->rsel);
1480                 }
1481                 if (sce_out != NULL && (ap->a_events & (POLLOUT | POLLWRNORM))) {
1482                         if (sce_out->cur != sce_out->fill)
1483                                 revents |= ap->a_events & (POLLOUT | POLLWRNORM);
1484                         else
1485                                 selrecord(curthread, &sce_out->rsel);
1486                 }
1487                 break;
1488         case UE_BULK:
1489                 /*
1490                  * We have no easy way of determining if a read will
1491                  * yield any data or a write will happen.
1492                  * Pretend they will.
1493                  */
1494                 revents |= ap->a_events &
1495                            (POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM);
1496                 break;
1497         default:
1498                 break;
1499         }
1500         crit_exit();
1501         ap->a_events = revents;
1502         return (0);
1503 }
1504
1505 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0);
1506