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 1.29 2007/07/01 21:24:03 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/ioccom.h>
  60 #include <sys/conf.h>
  61 #include <sys/fcntl.h>
  62 #include <sys/filio.h>
  63 #include <sys/tty.h>
  64 #include <sys/file.h>
  65 #include <sys/select.h>
  66 #include <sys/vnode.h>
  67 #include <sys/poll.h>
  68 #include <sys/sysctl.h>
  69 #include <sys/thread2.h>
  70
  71 #include <bus/usb/usb.h>
  72 #include <bus/usb/usbdi.h>
  73 #include <bus/usb/usbdi_util.h>
  74
  75 #include "ugenbuf.h"
  76
  77 SYSCTL_NODE(_hw_usb, OID_AUTO, ugen, CTLFLAG_RW, 0, "USB ugen");
  78
  79 #ifdef USB_DEBUG
  80 #define DPRINTF(x)      if (ugendebug) kprintf x
  81 #define DPRINTFN(n,x)   if (ugendebug>(n)) kprintf x
  82 int     ugendebug = 0;
  83 SYSCTL_INT(_hw_usb_ugen, OID_AUTO, debug, CTLFLAG_RW,
  84            &ugendebug, 0, "ugen debug level");
  85 #else
  86 #define DPRINTF(x)
  87 #define DPRINTFN(n,x)
  88 #endif
  89
  90 static int ugen_bufsize = 16384;
  91 SYSCTL_INT(_hw_usb_ugen, OID_AUTO, bufsize, CTLFLAG_RW,
  92            &ugen_bufsize, 0, "ugen temporary buffer size");
  93
  94 #define UGEN_CHUNK      128     /* chunk size for read */
  95 #define UGEN_IBSIZE     1020    /* buffer size */
  96
  97 #define UGEN_NISOFRAMES 500     /* 0.5 seconds worth */
  98 #define UGEN_NISOREQS   6       /* number of outstanding xfer requests */
  99 #define UGEN_NISORFRMS  4       /* number of frames (miliseconds) per req */
 100
 101 struct ugen_endpoint {
 102         struct ugen_softc *sc;
 103         cdev_t dev;
 104         usb_endpoint_descriptor_t *edesc;
 105         usbd_interface_handle iface;
 106         int state;
 107 #define UGEN_ASLP       0x02    /* waiting for data */
 108 #define UGEN_SHORT_OK   0x04    /* short xfers are OK */
 109         usbd_pipe_handle pipeh;
 110         struct clist q;
 111         struct selinfo rsel;
 112         u_char *ibuf;           /* start of buffer (circular for isoc) */
 113         u_char *fill;           /* location for input (isoc) */
 114         u_char *limit;          /* end of circular buffer (isoc) */
 115         u_char *cur;            /* current read location (isoc) */
 116         u_int32_t timeout;
 117         struct isoreq {
 118                 struct ugen_endpoint *sce;
 119                 usbd_xfer_handle xfer;
 120                 void *dmabuf;
 121                 u_int16_t sizes[UGEN_NISORFRMS];
 122         } isoreqs[UGEN_NISOREQS];
 123 };
 124
 125 struct ugen_softc {
 126         device_t sc_dev;                /* base device */
 127         usbd_device_handle sc_udev;
 128
 129         char sc_is_open[USB_MAX_ENDPOINTS];
 130         struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2];
 131 #define OUT 0
 132 #define IN  1
 133
 134         int sc_refcnt;
 135         u_char sc_dying;
 136 };
 137
 138 d_open_t  ugenopen;
 139 d_close_t ugenclose;
 140 d_read_t  ugenread;
 141 d_write_t ugenwrite;
 142 d_ioctl_t ugenioctl;
 143 d_poll_t  ugenpoll;
 144
 145 #define UGEN_CDEV_MAJOR 114
 146
 147 static struct dev_ops ugen_ops = {
 148         { "ugen", UGEN_CDEV_MAJOR, 0 },
 149         .d_open =       ugenopen,
 150         .d_close =      ugenclose,
 151         .d_read =       ugenread,
 152         .d_write =      ugenwrite,
 153         .d_ioctl =      ugenioctl,
 154         .d_poll =       ugenpoll,
 155 };
 156
 157 static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr,
 158                             usbd_status status);
 159 static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr,
 160                             usbd_status status);
 161 static int ugen_do_read(struct ugen_softc *, int, struct uio *, int);
 162 static int ugen_do_write(struct ugen_softc *, int, struct uio *, int);
 163 static int ugen_do_ioctl(struct ugen_softc *, int, u_long,
 164                             caddr_t, int);
 165 static void ugen_make_devnodes(struct ugen_softc *sc);
 166 static void ugen_destroy_devnodes(struct ugen_softc *sc);
 167 static int ugen_set_config(struct ugen_softc *sc, int configno);
 168 static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc,
 169                                                 int index, int *lenp);
 170 static usbd_status ugen_set_interface(struct ugen_softc *, int, int);
 171 static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx);
 172
 173 #define UGENUNIT(n) ((lminor(n) >> 4) & 0xff)
 174 #define UGENENDPOINT(n) (minor(n) & 0xf)
 175 #define UGENMINOR(u, e) (((u & 0xf) << 4) | ((u & 0xf0) << 12) | (e))
 176 #define UGENUNITMASK    0xffff00f0
 177
 178 USB_DECLARE_DRIVER(ugen);
 179
 180 static int
 181 ugen_match(device_t self)
 182 {
 183         struct usb_attach_arg *uaa = device_get_ivars(self);
 184
 185 #if 0
 186         if (uaa->matchlvl)
 187                 return (uaa->matchlvl);
 188 #endif
 189         if (uaa->usegeneric)
 190                 return (UMATCH_GENERIC);
 191         else
 192                 return (UMATCH_NONE);
 193 }
 194
 195 static int
 196 ugen_attach(device_t self)
 197 {
 198         struct ugen_softc *sc = device_get_softc(self);
 199         struct usb_attach_arg *uaa = device_get_ivars(self);
 200         usbd_device_handle udev;
 201         char devinfo[1024];
 202         usbd_status err;
 203         int conf;
 204
 205         usbd_devinfo(uaa->device, 0, devinfo);
 206         sc->sc_dev = self;
 207         device_set_desc_copy(self, devinfo);
 208         kprintf("%s: %s\n", device_get_nameunit(sc->sc_dev), devinfo);
 209
 210         sc->sc_udev = udev = uaa->device;
 211
 212         memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints);
 213
 214         /* First set configuration index 0, the default one for ugen. */
 215         err = usbd_set_config_index(udev, 0, 0);
 216         if (err) {
 217                 kprintf("%s: setting configuration index 0 failed\n",
 218                        device_get_nameunit(sc->sc_dev));
 219                 sc->sc_dying = 1;
 220                 return ENXIO;
 221         }
 222         conf = usbd_get_config_descriptor(udev)->bConfigurationValue;
 223
 224         /* Set up all the local state for this configuration. */
 225         err = ugen_set_config(sc, conf);
 226         if (err) {
 227                 kprintf("%s: setting configuration %d failed\n",
 228                        device_get_nameunit(sc->sc_dev), conf);
 229                 sc->sc_dying = 1;
 230                 return ENXIO;
 231         }
 232
 233         /* the main device, ctrl endpoint */
 234         dev_ops_add(&ugen_ops,
 235                     UGENUNITMASK, UGENMINOR(device_get_unit(sc->sc_dev), 0));
 236         make_dev(&ugen_ops, UGENMINOR(device_get_unit(sc->sc_dev), 0),
 237                 UID_ROOT, GID_OPERATOR, 0644, "%s", device_get_nameunit(sc->sc_dev));
 238
 239         return 0;
 240 }
 241
 242 static void
 243 ugen_make_devnodes(struct ugen_softc *sc)
 244 {
 245         int endptno;
 246         cdev_t dev;
 247
 248         for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
 249                 if (sc->sc_endpoints[endptno][IN].sc != NULL ||
 250                     sc->sc_endpoints[endptno][OUT].sc != NULL ) {
 251                         /* endpt can be 0x81 and 0x01, representing
 252                          * endpoint address 0x01 and IN/OUT directions.
 253                          * We map both endpts to the same device,
 254                          * IN is reading from it, OUT is writing to it.
 255                          *
 256                          * In the if clause above we check whether one
 257                          * of the structs is populated.
 258                          */
 259                         dev = make_dev(&ugen_ops,
 260                                 UGENMINOR(device_get_unit(sc->sc_dev), endptno),
 261                                 UID_ROOT, GID_OPERATOR, 0644,
 262                                 "%s.%d",
 263                                 device_get_nameunit(sc->sc_dev), endptno);
 264                         if (sc->sc_endpoints[endptno][IN].sc != NULL) {
 265                                 reference_dev(dev);
 266                                 if (sc->sc_endpoints[endptno][IN].dev)
 267                                         release_dev(sc->sc_endpoints[endptno][IN].dev);
 268                                 sc->sc_endpoints[endptno][IN].dev = dev;
 269                         }
 270                         if (sc->sc_endpoints[endptno][OUT].sc != NULL) {
 271                                 reference_dev(dev);
 272                                 if (sc->sc_endpoints[endptno][OUT].dev)
 273                                         release_dev(sc->sc_endpoints[endptno][OUT].dev);
 274                                 sc->sc_endpoints[endptno][OUT].dev = dev;
 275                         }
 276                 }
 277         }
 278 }
 279
 280 static void
 281 ugen_destroy_devnodes(struct ugen_softc *sc)
 282 {
 283         int endptno;
 284         cdev_t dev;
 285
 286         /* destroy all devices for the other (existing) endpoints as well */
 287         for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
 288                 if (sc->sc_endpoints[endptno][IN].sc != NULL ||
 289                     sc->sc_endpoints[endptno][OUT].sc != NULL ) {
 290                         /* endpt can be 0x81 and 0x01, representing
 291                          * endpoint address 0x01 and IN/OUT directions.
 292                          * We map both endpoint addresses to the same device,
 293                          * IN is reading from it, OUT is writing to it.
 294                          *
 295                          * In the if clause above we check whether one
 296                          * of the structs is populated.
 297                          */
 298                         dev = sc->sc_endpoints[endptno][IN].dev;
 299                         if (dev != NULL) {
 300                                 destroy_dev(dev);
 301                                 sc->sc_endpoints[endptno][IN].dev = NULL;
 302                         }
 303                         dev = sc->sc_endpoints[endptno][OUT].dev;
 304                         if (dev != NULL) {
 305                                 destroy_dev(dev);
 306                                 sc->sc_endpoints[endptno][OUT].dev = NULL;
 307                         }
 308                 }
 309         }
 310 }
 311
 312 static int
 313 ugen_set_config(struct ugen_softc *sc, int configno)
 314 {
 315         usbd_device_handle dev = sc->sc_udev;
 316         usbd_interface_handle iface;
 317         usb_endpoint_descriptor_t *ed;
 318         struct ugen_endpoint *sce;
 319         u_int8_t niface, nendpt;
 320         int ifaceno, endptno, endpt;
 321         usbd_status err;
 322         int dir;
 323
 324         DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n",
 325                     device_get_nameunit(sc->sc_dev), configno, sc));
 326
 327         ugen_destroy_devnodes(sc);
 328
 329         /* We start at 1, not 0, because we don't care whether the
 330          * control endpoint is open or not. It is always present.
 331          */
 332         for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
 333                 if (sc->sc_is_open[endptno]) {
 334                         DPRINTFN(1,
 335                              ("ugen_set_config: %s - endpoint %d is open\n",
 336                               device_get_nameunit(sc->sc_dev), endptno));
 337                         return (USBD_IN_USE);
 338                 }
 339         }
 340
 341         /* Avoid setting the current value. */
 342         if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) {
 343                 err = usbd_set_config_no(dev, configno, 1);
 344                 if (err)
 345                         return (err);
 346         }
 347
 348         err = usbd_interface_count(dev, &niface);
 349         if (err)
 350                 return (err);
 351         memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints);
 352         for (ifaceno = 0; ifaceno < niface; ifaceno++) {
 353                 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno));
 354                 err = usbd_device2interface_handle(dev, ifaceno, &iface);
 355                 if (err)
 356                         return (err);
 357                 err = usbd_endpoint_count(iface, &nendpt);
 358                 if (err)
 359                         return (err);
 360                 for (endptno = 0; endptno < nendpt; endptno++) {
 361                         ed = usbd_interface2endpoint_descriptor(iface,endptno);
 362                         endpt = ed->bEndpointAddress;
 363                         dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
 364                         sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
 365                         DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x"
 366                                     "(%d,%d), sce=%p\n",
 367                                     endptno, endpt, UE_GET_ADDR(endpt),
 368                                     UE_GET_DIR(endpt), sce));
 369                         sce->sc = sc;
 370                         sce->edesc = ed;
 371                         sce->iface = iface;
 372                 }
 373         }
 374
 375         ugen_make_devnodes(sc);
 376
 377         return (USBD_NORMAL_COMPLETION);
 378 }
 379
 380 int
 381 ugenopen(struct dev_open_args *ap)
 382 {
 383         cdev_t dev = ap->a_head.a_dev;
 384         struct ugen_softc *sc;
 385         int unit = UGENUNIT(dev);
 386         int endpt = UGENENDPOINT(dev);
 387         usb_endpoint_descriptor_t *edesc;
 388         struct ugen_endpoint *sce;
 389         int dir, isize;
 390         usbd_status err;
 391         usbd_xfer_handle xfer;
 392         void *buf;
 393         int i, j;
 394
 395         USB_GET_SC_OPEN(ugen, unit, sc);
 396
 397         DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n",
 398                      ap->a_oflags, ap->a_devtype, unit, endpt));
 399
 400         if (sc == NULL || sc->sc_dying)
 401                 return (ENXIO);
 402
 403         if (sc->sc_is_open[endpt])
 404                 return (EBUSY);
 405
 406         if (endpt == USB_CONTROL_ENDPOINT) {
 407                 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1;
 408                 return (0);
 409         }
 410
 411         /* Make sure there are pipes for all directions. */
 412         for (dir = OUT; dir <= IN; dir++) {
 413                 if (ap->a_oflags & (dir == OUT ? FWRITE : FREAD)) {
 414                         sce = &sc->sc_endpoints[endpt][dir];
 415                         if (sce == 0 || sce->edesc == 0)
 416                                 return (ENXIO);
 417                 }
 418         }
 419
 420         /* Actually open the pipes. */
 421         /* XXX Should back out properly if it fails. */
 422         for (dir = OUT; dir <= IN; dir++) {
 423                 if (!(ap->a_oflags & (dir == OUT ? FWRITE : FREAD)))
 424                         continue;
 425                 sce = &sc->sc_endpoints[endpt][dir];
 426                 sce->state = 0;
 427                 sce->timeout = USBD_NO_TIMEOUT;
 428                 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n",
 429                              sc, endpt, dir, sce));
 430                 edesc = sce->edesc;
 431                 switch (edesc->bmAttributes & UE_XFERTYPE) {
 432                 case UE_INTERRUPT:
 433                         if (dir == OUT) {
 434                                 err = usbd_open_pipe(sce->iface,
 435                                     edesc->bEndpointAddress, 0, &sce->pipeh);
 436                                 if (err)
 437                                         return (EIO);
 438                                 break;
 439                         }
 440                         isize = UGETW(edesc->wMaxPacketSize);
 441                         if (isize == 0) /* shouldn't happen */
 442                                 return (EINVAL);
 443                         sce->ibuf = kmalloc(isize, M_USBDEV, M_WAITOK);
 444                         DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n",
 445                                      endpt, isize));
 446                         if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1)
 447                                 return (ENOMEM);
 448                         err = usbd_open_pipe_intr(sce->iface,
 449                                 edesc->bEndpointAddress,
 450                                 USBD_SHORT_XFER_OK, &sce->pipeh, sce,
 451                                 sce->ibuf, isize, ugenintr,
 452                                 USBD_DEFAULT_INTERVAL);
 453                         if (err) {
 454                                 kfree(sce->ibuf, M_USBDEV);
 455                                 clfree(&sce->q);
 456                                 return (EIO);
 457                         }
 458                         DPRINTFN(5, ("ugenopen: interrupt open done\n"));
 459                         break;
 460                 case UE_BULK:
 461                         err = usbd_open_pipe(sce->iface,
 462                                   edesc->bEndpointAddress, 0, &sce->pipeh);
 463                         if (err)
 464                                 return (EIO);
 465                         break;
 466                 case UE_ISOCHRONOUS:
 467                         if (dir == OUT)
 468                                 return (EINVAL);
 469                         isize = UGETW(edesc->wMaxPacketSize);
 470                         if (isize == 0) /* shouldn't happen */
 471                                 return (EINVAL);
 472                         sce->ibuf = kmalloc(isize * UGEN_NISOFRAMES,
 473                                 M_USBDEV, M_WAITOK);
 474                         sce->cur = sce->fill = sce->ibuf;
 475                         sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES;
 476                         DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n",
 477                                      endpt, isize));
 478                         err = usbd_open_pipe(sce->iface,
 479                                   edesc->bEndpointAddress, 0, &sce->pipeh);
 480                         if (err) {
 481                                 kfree(sce->ibuf, M_USBDEV);
 482                                 return (EIO);
 483                         }
 484                         for(i = 0; i < UGEN_NISOREQS; ++i) {
 485                                 sce->isoreqs[i].sce = sce;
 486                                 xfer = usbd_alloc_xfer(sc->sc_udev);
 487                                 if (xfer == 0)
 488                                         goto bad;
 489                                 sce->isoreqs[i].xfer = xfer;
 490                                 buf = usbd_alloc_buffer
 491                                         (xfer, isize * UGEN_NISORFRMS);
 492                                 if (buf == 0) {
 493                                         i++;
 494                                         goto bad;
 495                                 }
 496                                 sce->isoreqs[i].dmabuf = buf;
 497                                 for(j = 0; j < UGEN_NISORFRMS; ++j)
 498                                         sce->isoreqs[i].sizes[j] = isize;
 499                                 usbd_setup_isoc_xfer
 500                                         (xfer, sce->pipeh, &sce->isoreqs[i],
 501                                          sce->isoreqs[i].sizes,
 502                                          UGEN_NISORFRMS, USBD_NO_COPY,
 503                                          ugen_isoc_rintr);
 504                                 (void)usbd_transfer(xfer);
 505                         }
 506                         DPRINTFN(5, ("ugenopen: isoc open done\n"));
 507                         break;
 508                 bad:
 509                         while (--i >= 0) /* implicit buffer free */
 510                                 usbd_free_xfer(sce->isoreqs[i].xfer);
 511                         return (ENOMEM);
 512                 case UE_CONTROL:
 513                         sce->timeout = USBD_DEFAULT_TIMEOUT;
 514                         return (EINVAL);
 515                 }
 516         }
 517         sc->sc_is_open[endpt] = 1;
 518         return (0);
 519 }
 520
 521 int
 522 ugenclose(struct dev_close_args *ap)
 523 {
 524         cdev_t dev = ap->a_head.a_dev;
 525         int endpt = UGENENDPOINT(dev);
 526         struct ugen_softc *sc;
 527         struct ugen_endpoint *sce;
 528         int dir;
 529         int i;
 530
 531         USB_GET_SC(ugen, UGENUNIT(dev), sc);
 532
 533         DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n",
 534                      ap->a_fflag, ap->a_devtype, UGENUNIT(dev), endpt));
 535
 536 #ifdef DIAGNOSTIC
 537         if (!sc->sc_is_open[endpt]) {
 538                 kprintf("ugenclose: not open\n");
 539                 return (EINVAL);
 540         }
 541 #endif
 542
 543         if (endpt == USB_CONTROL_ENDPOINT) {
 544                 DPRINTFN(5, ("ugenclose: close control\n"));
 545                 sc->sc_is_open[endpt] = 0;
 546                 return (0);
 547         }
 548
 549         for (dir = OUT; dir <= IN; dir++) {
 550                 if (!(ap->a_fflag & (dir == OUT ? FWRITE : FREAD)))
 551                         continue;
 552                 sce = &sc->sc_endpoints[endpt][dir];
 553                 if (sce == NULL || sce->pipeh == NULL)
 554                         continue;
 555                 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n",
 556                              endpt, dir, sce));
 557
 558                 usbd_abort_pipe(sce->pipeh);
 559                 usbd_close_pipe(sce->pipeh);
 560                 sce->pipeh = NULL;
 561
 562                 switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
 563                 case UE_INTERRUPT:
 564                         ndflush(&sce->q, sce->q.c_cc);
 565                         clfree(&sce->q);
 566                         break;
 567                 case UE_ISOCHRONOUS:
 568                         for (i = 0; i < UGEN_NISOREQS; ++i)
 569                                 usbd_free_xfer(sce->isoreqs[i].xfer);
 570                 default:
 571                         break;
 572                 }
 573
 574                 if (sce->ibuf != NULL) {
 575                         kfree(sce->ibuf, M_USBDEV);
 576                         sce->ibuf = NULL;
 577                         clfree(&sce->q);
 578                 }
 579         }
 580         sc->sc_is_open[endpt] = 0;
 581
 582         return (0);
 583 }
 584
 585 static int
 586 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag)
 587 {
 588         struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN];
 589         u_int32_t n, tn;
 590         char *buf;
 591         usbd_xfer_handle xfer;
 592         usbd_status err;
 593         int error = 0;
 594         int ugen_bbsize;
 595         u_char buffer[UGEN_CHUNK];
 596
 597         DPRINTFN(5, ("%s: ugenread: %d\n", device_get_nameunit(sc->sc_dev), endpt));
 598
 599         if (sc->sc_dying)
 600                 return (EIO);
 601
 602         if (endpt == USB_CONTROL_ENDPOINT)
 603                 return (ENODEV);
 604
 605         if (sce == NULL)
 606                 return (EINVAL);
 607
 608         if (sce->edesc == NULL) {
 609                 kprintf("ugenread: no edesc\n");
 610                 return (EIO);
 611         }
 612         if (sce->pipeh == NULL) {
 613                 kprintf("ugenread: no pipe\n");
 614                 return (EIO);
 615         }
 616
 617         buf = getugenbuf(ugen_bufsize, &ugen_bbsize);
 618
 619         switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
 620         case UE_INTERRUPT:
 621                 /* Block until activity occurred. */
 622                 crit_enter();
 623                 while (sce->q.c_cc == 0) {
 624                         if (flag & IO_NDELAY) {
 625                                 crit_exit();
 626                                 error = EWOULDBLOCK;
 627                                 goto done;
 628                         }
 629                         sce->state |= UGEN_ASLP;
 630                         DPRINTFN(5, ("ugenread: sleep on %p\n", sce));
 631                         error = tsleep(sce, PCATCH, "ugenri", 0);
 632                         DPRINTFN(5, ("ugenread: woke, error=%d\n", error));
 633                         if (sc->sc_dying)
 634                                 error = EIO;
 635                         if (error) {
 636                                 sce->state &= ~UGEN_ASLP;
 637                                 break;
 638                         }
 639                 }
 640                 crit_exit();
 641
 642                 /* Transfer as many chunks as possible. */
 643                 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) {
 644                         n = min(sce->q.c_cc, uio->uio_resid);
 645                         if (n > sizeof(buffer))
 646                                 n = sizeof(buffer);
 647
 648                         /* Remove a small chunk from the input queue. */
 649                         q_to_b(&sce->q, buffer, n);
 650                         DPRINTFN(5, ("ugenread: got %d chars\n", n));
 651
 652                         /* Copy the data to the user process. */
 653                         error = uiomove(buffer, n, uio);
 654                         if (error)
 655                                 break;
 656                 }
 657                 break;
 658         case UE_BULK:
 659                 xfer = usbd_alloc_xfer(sc->sc_udev);
 660                 if (xfer == 0) {
 661                         error = ENOMEM;
 662                         goto done;
 663                 }
 664                 while ((n = min(ugen_bbsize, uio->uio_resid)) != 0) {
 665                         DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n));
 666                         tn = n;
 667                         err = usbd_bulk_transfer(
 668                                 xfer, sce->pipeh,
 669                                 sce->state & UGEN_SHORT_OK ?
 670                                     USBD_SHORT_XFER_OK : 0,
 671                                 sce->timeout, buf, &tn, "ugenrb");
 672                         if (err) {
 673                                 if (err == USBD_INTERRUPTED)
 674                                         error = EINTR;
 675                                 else if (err == USBD_TIMEOUT)
 676                                         error = ETIMEDOUT;
 677                                 else
 678                                         error = EIO;
 679                                 break;
 680                         }
 681                         DPRINTFN(1, ("ugenread: got %d bytes\n", tn));
 682                         error = uiomove(buf, tn, uio);
 683                         if (error || tn < n)
 684                                 break;
 685                 }
 686                 usbd_free_xfer(xfer);
 687                 break;
 688         case UE_ISOCHRONOUS:
 689                 crit_enter();
 690                 while (sce->cur == sce->fill) {
 691                         if (flag & IO_NDELAY) {
 692                                 crit_exit();
 693                                 error = EWOULDBLOCK;
 694                                 goto done;
 695                         }
 696                         sce->state |= UGEN_ASLP;
 697                         DPRINTFN(5, ("ugenread: sleep on %p\n", sce));
 698                         error = tsleep(sce, PCATCH, "ugenri", 0);
 699                         DPRINTFN(5, ("ugenread: woke, error=%d\n", error));
 700                         if (sc->sc_dying)
 701                                 error = EIO;
 702                         if (error) {
 703                                 sce->state &= ~UGEN_ASLP;
 704                                 break;
 705                         }
 706                 }
 707
 708                 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) {
 709                         if(sce->fill > sce->cur)
 710                                 n = min(sce->fill - sce->cur, uio->uio_resid);
 711                         else
 712                                 n = min(sce->limit - sce->cur, uio->uio_resid);
 713
 714                         DPRINTFN(5, ("ugenread: isoc got %d chars\n", n));
 715
 716                         /* Copy the data to the user process. */
 717                         error = uiomove(sce->cur, n, uio);
 718                         if (error)
 719                                 break;
 720                         sce->cur += n;
 721                         if(sce->cur >= sce->limit)
 722                                 sce->cur = sce->ibuf;
 723                 }
 724                 crit_exit();
 725                 break;
 726
 727
 728         default:
 729                 error = ENXIO;
 730                 break;
 731         }
 732 done:
 733         relugenbuf(buf, ugen_bbsize);
 734         return (error);
 735 }
 736
 737 int
 738 ugenread(struct dev_read_args *ap)
 739 {
 740         cdev_t dev = ap->a_head.a_dev;
 741         int endpt = UGENENDPOINT(dev);
 742         struct ugen_softc *sc;
 743         int error;
 744
 745         USB_GET_SC(ugen, UGENUNIT(dev), sc);
 746
 747         sc->sc_refcnt++;
 748         error = ugen_do_read(sc, endpt, ap->a_uio, ap->a_ioflag);
 749         if (--sc->sc_refcnt < 0)
 750                 usb_detach_wakeup(sc->sc_dev);
 751         return (error);
 752 }
 753
 754 static int
 755 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, int flag)
 756 {
 757         struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT];
 758         u_int32_t n;
 759         int error = 0;
 760         int ugen_bbsize;
 761         char *buf;
 762         usbd_xfer_handle xfer;
 763         usbd_status err;
 764
 765         DPRINTFN(5, ("%s: ugenwrite: %d\n", device_get_nameunit(sc->sc_dev), endpt));
 766
 767         if (sc->sc_dying)
 768                 return (EIO);
 769
 770         if (endpt == USB_CONTROL_ENDPOINT)
 771                 return (ENODEV);
 772
 773         if (sce == NULL)
 774                 return (EINVAL);
 775
 776         if (sce->edesc == NULL) {
 777                 kprintf("ugenwrite: no edesc\n");
 778                 return (EIO);
 779         }
 780         if (sce->pipeh == NULL) {
 781                 kprintf("ugenwrite: no pipe\n");
 782                 return (EIO);
 783         }
 784
 785         buf = getugenbuf(ugen_bufsize, &ugen_bbsize);
 786
 787         switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
 788         case UE_BULK:
 789                 xfer = usbd_alloc_xfer(sc->sc_udev);
 790                 if (xfer == 0) {
 791                         error = EIO;
 792                         goto done;
 793                 }
 794                 while ((n = min(ugen_bbsize, uio->uio_resid)) != 0) {
 795                         error = uiomove(buf, n, uio);
 796                         if (error)
 797                                 break;
 798                         DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n));
 799                         err = usbd_bulk_transfer(xfer, sce->pipeh, 0,
 800                                   sce->timeout, buf, &n,"ugenwb");
 801                         if (err) {
 802                                 if (err == USBD_INTERRUPTED)
 803                                         error = EINTR;
 804                                 else if (err == USBD_TIMEOUT)
 805                                         error = ETIMEDOUT;
 806                                 else
 807                                         error = EIO;
 808                                 break;
 809                         }
 810                 }
 811                 usbd_free_xfer(xfer);
 812                 break;
 813         case UE_INTERRUPT:
 814                 xfer = usbd_alloc_xfer(sc->sc_udev);
 815                 if (xfer == 0) {
 816                         error = EIO;
 817                         goto done;
 818                 }
 819                 while ((n = min(UGETW(sce->edesc->wMaxPacketSize),
 820                     uio->uio_resid)) != 0) {
 821                         error = uiomove(buf, n, uio);
 822                         if (error)
 823                                 break;
 824                         DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n));
 825                         err = usbd_intr_transfer(xfer, sce->pipeh, 0,
 826                                   sce->timeout, buf, &n,"ugenwi");
 827                         if (err) {
 828                                 if (err == USBD_INTERRUPTED)
 829                                         error = EINTR;
 830                                 else if (err == USBD_TIMEOUT)
 831                                         error = ETIMEDOUT;
 832                                 else
 833                                         error = EIO;
 834                                 break;
 835                         }
 836                 }
 837                 usbd_free_xfer(xfer);
 838                 break;
 839         default:
 840                 error = ENXIO;
 841                 break;
 842         }
 843 done:
 844         relugenbuf(buf, ugen_bbsize);
 845         return (error);
 846 }
 847
 848 int
 849 ugenwrite(struct dev_write_args *ap)
 850 {
 851         cdev_t dev = ap->a_head.a_dev;
 852         int endpt = UGENENDPOINT(dev);
 853         struct ugen_softc *sc;
 854         int error;
 855
 856         USB_GET_SC(ugen, UGENUNIT(dev), sc);
 857
 858         sc->sc_refcnt++;
 859         error = ugen_do_write(sc, endpt, ap->a_uio, ap->a_ioflag);
 860         if (--sc->sc_refcnt < 0)
 861                 usb_detach_wakeup(sc->sc_dev);
 862         return (error);
 863 }
 864
 865 static int
 866 ugen_detach(device_t self)
 867 {
 868         struct ugen_softc *sc = device_get_softc(self);
 869         struct ugen_endpoint *sce;
 870         int i, dir;
 871
 872         DPRINTF(("ugen_detach: sc=%p\n", sc));
 873
 874         sc->sc_dying = 1;
 875         /* Abort all pipes.  Causes processes waiting for transfer to wake. */
 876         for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
 877                 for (dir = OUT; dir <= IN; dir++) {
 878                         sce = &sc->sc_endpoints[i][dir];
 879                         if (sce && sce->pipeh)
 880                                 usbd_abort_pipe(sce->pipeh);
 881                 }
 882         }
 883         crit_enter();
 884         if (--sc->sc_refcnt >= 0) {
 885                 /* Wake everyone */
 886                 for (i = 0; i < USB_MAX_ENDPOINTS; i++)
 887                         wakeup(&sc->sc_endpoints[i][IN]);
 888                 /* Wait for processes to go away. */
 889                 usb_detach_wait(sc->sc_dev);
 890         }
 891         crit_exit();
 892
 893         /* destroy the device for the control endpoint */
 894         ugen_destroy_devnodes(sc);
 895         dev_ops_remove(&ugen_ops,
 896                     UGENUNITMASK, UGENMINOR(device_get_unit(sc->sc_dev), 0));
 897         return (0);
 898 }
 899
 900 static void
 901 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
 902 {
 903         struct ugen_endpoint *sce = addr;
 904         /*struct ugen_softc *sc = sce->sc;*/
 905         u_int32_t count;
 906         u_char *ibuf;
 907
 908         if (status == USBD_CANCELLED)
 909                 return;
 910
 911         if (status != USBD_NORMAL_COMPLETION) {
 912                 DPRINTF(("ugenintr: status=%d\n", status));
 913                 if (status == USBD_STALLED)
 914                     usbd_clear_endpoint_stall_async(sce->pipeh);
 915                 return;
 916         }
 917
 918         usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
 919         ibuf = sce->ibuf;
 920
 921         DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n",
 922                      xfer, status, count));
 923         DPRINTFN(5, ("          data = %02x %02x %02x\n",
 924                      ibuf[0], ibuf[1], ibuf[2]));
 925
 926         (void)b_to_q(ibuf, count, &sce->q);
 927
 928         if (sce->state & UGEN_ASLP) {
 929                 sce->state &= ~UGEN_ASLP;
 930                 DPRINTFN(5, ("ugen_intr: waking %p\n", sce));
 931                 wakeup(sce);
 932         }
 933         selwakeuppri(&sce->rsel, 0);
 934 }
 935
 936 static void
 937 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr,
 938                 usbd_status status)
 939 {
 940         struct isoreq *req = addr;
 941         struct ugen_endpoint *sce = req->sce;
 942         u_int32_t count, n;
 943         int i, isize;
 944
 945         /* Return if we are aborting. */
 946         if (status == USBD_CANCELLED)
 947                 return;
 948
 949         usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
 950         DPRINTFN(5,("ugen_isoc_rintr: xfer %d, count=%d\n",
 951                     (int)(req - sce->isoreqs),
 952                     count));
 953
 954         /* throw away oldest input if the buffer is full */
 955         if(sce->fill < sce->cur && sce->cur <= sce->fill + count) {
 956                 sce->cur += count;
 957                 if(sce->cur >= sce->limit)
 958                         sce->cur = sce->ibuf + (sce->limit - sce->cur);
 959                 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n",
 960                              count));
 961         }
 962
 963         isize = UGETW(sce->edesc->wMaxPacketSize);
 964         for (i = 0; i < UGEN_NISORFRMS; i++) {
 965                 u_int32_t actlen = req->sizes[i];
 966                 char const *buf = (char const *)req->dmabuf + isize * i;
 967
 968                 /* copy data to buffer */
 969                 while (actlen > 0) {
 970                         n = min(actlen, sce->limit - sce->fill);
 971                         memcpy(sce->fill, buf, n);
 972
 973                         buf += n;
 974                         actlen -= n;
 975                         sce->fill += n;
 976                         if(sce->fill == sce->limit)
 977                                 sce->fill = sce->ibuf;
 978                 }
 979
 980                 /* setup size for next transfer */
 981                 req->sizes[i] = isize;
 982         }
 983
 984         usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS,
 985                              USBD_NO_COPY, ugen_isoc_rintr);
 986         (void)usbd_transfer(xfer);
 987
 988         if (sce->state & UGEN_ASLP) {
 989                 sce->state &= ~UGEN_ASLP;
 990                 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce));
 991                 wakeup(sce);
 992         }
 993         selwakeuppri(&sce->rsel, 0);
 994 }
 995
 996 static usbd_status
 997 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno)
 998 {
 999         usbd_interface_handle iface;
1000         usb_endpoint_descriptor_t *ed;
1001         usbd_status err;
1002         struct ugen_endpoint *sce;
1003         u_int8_t niface, nendpt, endptno, endpt;
1004         int dir;
1005
1006         DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno));
1007
1008         err = usbd_interface_count(sc->sc_udev, &niface);
1009         if (err)
1010                 return (err);
1011         if (ifaceidx < 0 || ifaceidx >= niface)
1012                 return (USBD_INVAL);
1013
1014         err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface);
1015         if (err)
1016                 return (err);
1017         err = usbd_endpoint_count(iface, &nendpt);
1018         if (err)
1019                 return (err);
1020
1021         /* destroy the existing devices, we remake the new ones in a moment */
1022         ugen_destroy_devnodes(sc);
1023
1024         /* XXX should only do this after setting new altno has succeeded */
1025         for (endptno = 0; endptno < nendpt; endptno++) {
1026                 ed = usbd_interface2endpoint_descriptor(iface,endptno);
1027                 endpt = ed->bEndpointAddress;
1028                 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
1029                 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
1030                 sce->sc = 0;
1031                 sce->edesc = 0;
1032                 sce->iface = 0;
1033         }
1034
1035         /* change setting */
1036         err = usbd_set_interface(iface, altno);
1037         if (err)
1038                 return (err);
1039
1040         err = usbd_endpoint_count(iface, &nendpt);
1041         if (err)
1042                 return (err);
1043         for (endptno = 0; endptno < nendpt; endptno++) {
1044                 ed = usbd_interface2endpoint_descriptor(iface,endptno);
1045                 endpt = ed->bEndpointAddress;
1046                 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
1047                 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
1048                 sce->sc = sc;
1049                 sce->edesc = ed;
1050                 sce->iface = iface;
1051         }
1052
1053         /* make the new devices */
1054         ugen_make_devnodes(sc);
1055
1056         return (0);
1057 }
1058
1059 /* Retrieve a complete descriptor for a certain device and index. */
1060 static usb_config_descriptor_t *
1061 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp)
1062 {
1063         usb_config_descriptor_t *cdesc, *tdesc, cdescr;
1064         int len;
1065         usbd_status err;
1066
1067         if (index == USB_CURRENT_CONFIG_INDEX) {
1068                 tdesc = usbd_get_config_descriptor(sc->sc_udev);
1069                 len = UGETW(tdesc->wTotalLength);
1070                 if (lenp)
1071                         *lenp = len;
1072                 cdesc = kmalloc(len, M_TEMP, M_INTWAIT);
1073                 memcpy(cdesc, tdesc, len);
1074                 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len));
1075         } else {
1076                 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr);
1077                 if (err)
1078                         return (0);
1079                 len = UGETW(cdescr.wTotalLength);
1080                 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len));
1081                 if (lenp)
1082                         *lenp = len;
1083                 cdesc = kmalloc(len, M_TEMP, M_INTWAIT);
1084                 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len);
1085                 if (err) {
1086                         kfree(cdesc, M_TEMP);
1087                         return (0);
1088                 }
1089         }
1090         return (cdesc);
1091 }
1092
1093 static int
1094 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx)
1095 {
1096         usbd_interface_handle iface;
1097         usbd_status err;
1098
1099         err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface);
1100         if (err)
1101                 return (-1);
1102         return (usbd_get_interface_altindex(iface));
1103 }
1104
1105 static int
1106 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd,
1107               caddr_t addr, int flag)
1108 {
1109         struct ugen_endpoint *sce;
1110         usbd_status err;
1111         usbd_interface_handle iface;
1112         struct usb_config_desc *cd;
1113         usb_config_descriptor_t *cdesc;
1114         struct usb_interface_desc *id;
1115         usb_interface_descriptor_t *idesc;
1116         struct usb_endpoint_desc *ed;
1117         usb_endpoint_descriptor_t *edesc;
1118         struct usb_alt_interface *ai;
1119         struct usb_string_desc *si;
1120         u_int8_t conf, alt;
1121
1122         DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd));
1123         if (sc->sc_dying)
1124                 return (EIO);
1125
1126         switch (cmd) {
1127         case USB_SET_SHORT_XFER:
1128                 /* This flag only affects read */
1129                 if (endpt == USB_CONTROL_ENDPOINT)
1130                         return (EINVAL);
1131                 sce = &sc->sc_endpoints[endpt][IN];
1132                 if (sce == NULL)
1133                         return (EINVAL);
1134
1135                 if (sce->pipeh == NULL) {
1136                         kprintf("ugenioctl: USB_SET_SHORT_XFER, no pipe\n");
1137                         return (EIO);
1138                 }
1139
1140                 if (*(int *)addr)
1141                         sce->state |= UGEN_SHORT_OK;
1142                 else
1143                         sce->state &= ~UGEN_SHORT_OK;
1144                 return (0);
1145         case USB_SET_TIMEOUT:
1146                 sce = &sc->sc_endpoints[endpt][IN];
1147                 if (sce == NULL)
1148                         return (EINVAL);
1149                 sce->timeout = *(int *)addr;
1150                 return (0);
1151         default:
1152                 break;
1153         }
1154
1155         if (endpt != USB_CONTROL_ENDPOINT)
1156                 return (EINVAL);
1157
1158         switch (cmd) {
1159 #ifdef USB_DEBUG
1160         case USB_SETDEBUG:
1161                 ugendebug = *(int *)addr;
1162                 break;
1163 #endif
1164         case USB_GET_CONFIG:
1165                 err = usbd_get_config(sc->sc_udev, &conf);
1166                 if (err)
1167                         return (EIO);
1168                 *(int *)addr = conf;
1169                 break;
1170         case USB_SET_CONFIG:
1171                 if (!(flag & FWRITE))
1172                         return (EPERM);
1173                 err = ugen_set_config(sc, *(int *)addr);
1174                 switch (err) {
1175                 case USBD_NORMAL_COMPLETION:
1176                         break;
1177                 case USBD_IN_USE:
1178                         return (EBUSY);
1179                 default:
1180                         return (EIO);
1181                 }
1182                 break;
1183         case USB_GET_ALTINTERFACE:
1184                 ai = (struct usb_alt_interface *)addr;
1185                 err = usbd_device2interface_handle(sc->sc_udev,
1186                           ai->uai_interface_index, &iface);
1187                 if (err)
1188                         return (EINVAL);
1189                 idesc = usbd_get_interface_descriptor(iface);
1190                 if (idesc == NULL)
1191                         return (EIO);
1192                 ai->uai_alt_no = idesc->bAlternateSetting;
1193                 break;
1194         case USB_SET_ALTINTERFACE:
1195                 if (!(flag & FWRITE))
1196                         return (EPERM);
1197                 ai = (struct usb_alt_interface *)addr;
1198                 err = usbd_device2interface_handle(sc->sc_udev,
1199                           ai->uai_interface_index, &iface);
1200                 if (err)
1201                         return (EINVAL);
1202                 err = ugen_set_interface(sc, ai->uai_interface_index, ai->uai_alt_no);
1203                 if (err)
1204                         return (EINVAL);
1205                 break;
1206         case USB_GET_NO_ALT:
1207                 ai = (struct usb_alt_interface *)addr;
1208                 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0);
1209                 if (cdesc == NULL)
1210                         return (EINVAL);
1211                 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0);
1212                 if (idesc == NULL) {
1213                         kfree(cdesc, M_TEMP);
1214                         return (EINVAL);
1215                 }
1216                 ai->uai_alt_no = usbd_get_no_alts(cdesc, idesc->bInterfaceNumber);
1217                 kfree(cdesc, M_TEMP);
1218                 break;
1219         case USB_GET_DEVICE_DESC:
1220                 *(usb_device_descriptor_t *)addr =
1221                         *usbd_get_device_descriptor(sc->sc_udev);
1222                 break;
1223         case USB_GET_CONFIG_DESC:
1224                 cd = (struct usb_config_desc *)addr;
1225                 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0);
1226                 if (cdesc == NULL)
1227                         return (EINVAL);
1228                 cd->ucd_desc = *cdesc;
1229                 kfree(cdesc, M_TEMP);
1230                 break;
1231         case USB_GET_INTERFACE_DESC:
1232                 id = (struct usb_interface_desc *)addr;
1233                 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0);
1234                 if (cdesc == NULL)
1235                         return (EINVAL);
1236                 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX &&
1237                     id->uid_alt_index == USB_CURRENT_ALT_INDEX)
1238                         alt = ugen_get_alt_index(sc, id->uid_interface_index);
1239                 else
1240                         alt = id->uid_alt_index;
1241                 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt);
1242                 if (idesc == NULL) {
1243                         kfree(cdesc, M_TEMP);
1244                         return (EINVAL);
1245                 }
1246                 id->uid_desc = *idesc;
1247                 kfree(cdesc, M_TEMP);
1248                 break;
1249         case USB_GET_ENDPOINT_DESC:
1250                 ed = (struct usb_endpoint_desc *)addr;
1251                 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0);
1252                 if (cdesc == NULL)
1253                         return (EINVAL);
1254                 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX &&
1255                     ed->ued_alt_index == USB_CURRENT_ALT_INDEX)
1256                         alt = ugen_get_alt_index(sc, ed->ued_interface_index);
1257                 else
1258                         alt = ed->ued_alt_index;
1259                 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index,
1260                                         alt, ed->ued_endpoint_index);
1261                 if (edesc == NULL) {
1262                         kfree(cdesc, M_TEMP);
1263                         return (EINVAL);
1264                 }
1265                 ed->ued_desc = *edesc;
1266                 kfree(cdesc, M_TEMP);
1267                 break;
1268         case USB_GET_FULL_DESC:
1269         {
1270                 int len;
1271                 struct iovec iov;
1272                 struct uio uio;
1273                 struct usb_full_desc *fd = (struct usb_full_desc *)addr;
1274                 int error;
1275
1276                 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len);
1277                 if (len > fd->ufd_size)
1278                         len = fd->ufd_size;
1279                 iov.iov_base = (caddr_t)fd->ufd_data;
1280                 iov.iov_len = len;
1281                 uio.uio_iov = &iov;
1282                 uio.uio_iovcnt = 1;
1283                 uio.uio_resid = len;
1284                 uio.uio_offset = 0;
1285                 uio.uio_segflg = UIO_USERSPACE;
1286                 uio.uio_rw = UIO_READ;
1287                 uio.uio_td = curthread;
1288                 error = uiomove((void *)cdesc, len, &uio);
1289                 kfree(cdesc, M_TEMP);
1290                 return (error);
1291         }
1292         case USB_GET_STRING_DESC:
1293         {
1294                 int size;
1295
1296                 si = (struct usb_string_desc *)addr;
1297                 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index,
1298                           si->usd_language_id, &si->usd_desc, &size);
1299                 if (err)
1300                         return (EINVAL);
1301                 break;
1302         }
1303         case USB_DO_REQUEST:
1304         {
1305                 struct usb_ctl_request *ur = (void *)addr;
1306                 int len = UGETW(ur->ucr_request.wLength);
1307                 struct iovec iov;
1308                 struct uio uio;
1309                 void *ptr = 0;
1310                 usbd_status err;
1311                 int error = 0;
1312
1313                 if (!(flag & FWRITE))
1314                         return (EPERM);
1315                 /* Avoid requests that would damage the bus integrity. */
1316                 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE &&
1317                      ur->ucr_request.bRequest == UR_SET_ADDRESS) ||
1318                     (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE &&
1319                      ur->ucr_request.bRequest == UR_SET_CONFIG) ||
1320                     (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE &&
1321                      ur->ucr_request.bRequest == UR_SET_INTERFACE))
1322                         return (EINVAL);
1323
1324                 if (len < 0 || len > 32767)
1325                         return (EINVAL);
1326                 if (len != 0) {
1327                         iov.iov_base = (caddr_t)ur->ucr_data;
1328                         iov.iov_len = len;
1329                         uio.uio_iov = &iov;
1330                         uio.uio_iovcnt = 1;
1331                         uio.uio_resid = len;
1332                         uio.uio_offset = 0;
1333                         uio.uio_segflg = UIO_USERSPACE;
1334                         uio.uio_rw =
1335                                 ur->ucr_request.bmRequestType & UT_READ ?
1336                                 UIO_READ : UIO_WRITE;
1337                         uio.uio_td = curthread;
1338                         ptr = kmalloc(len, M_TEMP, M_WAITOK);
1339                         if (uio.uio_rw == UIO_WRITE) {
1340                                 error = uiomove(ptr, len, &uio);
1341                                 if (error)
1342                                         goto ret;
1343                         }
1344                 }
1345                 sce = &sc->sc_endpoints[endpt][IN];
1346                 err = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request,
1347                           ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout);
1348                 if (err) {
1349                         error = EIO;
1350                         goto ret;
1351                 }
1352                 if (len != 0) {
1353                         if (uio.uio_rw == UIO_READ) {
1354                                 error = uiomove(ptr, len, &uio);
1355                                 if (error)
1356                                         goto ret;
1357                         }
1358                 }
1359         ret:
1360                 if (ptr)
1361                         kfree(ptr, M_TEMP);
1362                 return (error);
1363         }
1364         case USB_GET_DEVICEINFO:
1365                 usbd_fill_deviceinfo(sc->sc_udev,
1366                     (struct usb_device_info *)addr, 1);
1367                 break;
1368         default:
1369                 return (EINVAL);
1370         }
1371         return (0);
1372 }
1373
1374 int
1375 ugenioctl(struct dev_ioctl_args *ap)
1376 {
1377         cdev_t dev = ap->a_head.a_dev;
1378         int endpt = UGENENDPOINT(dev);
1379         struct ugen_softc *sc;
1380         int error;
1381
1382         USB_GET_SC(ugen, UGENUNIT(dev), sc);
1383
1384         sc->sc_refcnt++;
1385         error = ugen_do_ioctl(sc, endpt, ap->a_cmd, ap->a_data, ap->a_fflag);
1386         if (--sc->sc_refcnt < 0)
1387                 usb_detach_wakeup(sc->sc_dev);
1388         return (error);
1389 }
1390
1391 int
1392 ugenpoll(struct dev_poll_args *ap)
1393 {
1394         cdev_t dev = ap->a_head.a_dev;
1395         struct ugen_softc *sc;
1396         struct ugen_endpoint *sce;
1397         int revents = 0;
1398
1399         USB_GET_SC(ugen, UGENUNIT(dev), sc);
1400
1401         if (sc->sc_dying)
1402                 return (EIO);
1403
1404         /* XXX always IN */
1405         sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN];
1406         if (sce == NULL)
1407                 return (EINVAL);
1408
1409         if (!sce->edesc) {
1410                 kprintf("ugenpoll: no edesc\n");
1411                 return (EIO);
1412         }
1413         if (!sce->pipeh) {
1414                 kprintf("ugenpoll: no pipe\n");
1415                 return (EIO);
1416         }
1417
1418         crit_enter();
1419         switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
1420         case UE_INTERRUPT:
1421                 if (ap->a_events & (POLLIN | POLLRDNORM)) {
1422                         if (sce->q.c_cc > 0)
1423                                 revents |= ap->a_events & (POLLIN | POLLRDNORM);
1424                         else
1425                                 selrecord(curthread, &sce->rsel);
1426                 }
1427                 break;
1428         case UE_ISOCHRONOUS:
1429                 if (ap->a_events & (POLLIN | POLLRDNORM)) {
1430                         if (sce->cur != sce->fill)
1431                                 revents |= ap->a_events & (POLLIN | POLLRDNORM);
1432                         else
1433                                 selrecord(curthread, &sce->rsel);
1434                 }
1435                 break;
1436         case UE_BULK:
1437                 /*
1438                  * We have no easy way of determining if a read will
1439                  * yield any data or a write will happen.
1440                  * Pretend they will.
1441                  */
1442                 revents |= ap->a_events &
1443                            (POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM);
1444                 break;
1445         default:
1446                 break;
1447         }
1448         crit_exit();
1449         ap->a_events = revents;
1450         return (0);
1451 }
1452
1453 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0);
1454