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/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 static device_probe_t ugen_match;
 179 static device_attach_t ugen_attach;
 180 static device_detach_t ugen_detach;
 181
 182 static devclass_t ugen_devclass;
 183
 184 static kobj_method_t ugen_methods[] = {
 185         DEVMETHOD(device_probe, ugen_match),
 186         DEVMETHOD(device_attach, ugen_attach),
 187         DEVMETHOD(device_detach, ugen_detach),
 188         {0,0}
 189 };
 190
 191 static driver_t ugen_driver = {
 192         "ugen",
 193         ugen_methods,
 194         sizeof(struct ugen_softc)
 195 };
 196
 197 MODULE_DEPEND(ugen, usb, 1, 1, 1);
 198
 199 static int
 200 ugen_match(device_t self)
 201 {
 202         struct usb_attach_arg *uaa = device_get_ivars(self);
 203
 204 #if 0
 205         if (uaa->matchlvl)
 206                 return (uaa->matchlvl);
 207 #endif
 208         if (uaa->usegeneric)
 209                 return (UMATCH_GENERIC);
 210         else
 211                 return (UMATCH_NONE);
 212 }
 213
 214 static int
 215 ugen_attach(device_t self)
 216 {
 217         struct ugen_softc *sc = device_get_softc(self);
 218         struct usb_attach_arg *uaa = device_get_ivars(self);
 219         usbd_device_handle udev;
 220         usbd_status err;
 221         int conf;
 222
 223         sc->sc_dev = self;
 224         sc->sc_udev = udev = uaa->device;
 225
 226         memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints);
 227
 228         /* First set configuration index 0, the default one for ugen. */
 229         err = usbd_set_config_index(udev, 0, 0);
 230         if (err) {
 231                 kprintf("%s: setting configuration index 0 failed\n",
 232                        device_get_nameunit(sc->sc_dev));
 233                 sc->sc_dying = 1;
 234                 return ENXIO;
 235         }
 236         conf = usbd_get_config_descriptor(udev)->bConfigurationValue;
 237
 238         /* Set up all the local state for this configuration. */
 239         err = ugen_set_config(sc, conf);
 240         if (err) {
 241                 kprintf("%s: setting configuration %d failed\n",
 242                        device_get_nameunit(sc->sc_dev), conf);
 243                 sc->sc_dying = 1;
 244                 return ENXIO;
 245         }
 246
 247         /* the main device, ctrl endpoint */
 248         dev_ops_add(&ugen_ops,
 249                     UGENUNITMASK, UGENMINOR(device_get_unit(sc->sc_dev), 0));
 250         make_dev(&ugen_ops, UGENMINOR(device_get_unit(sc->sc_dev), 0),
 251                 UID_ROOT, GID_OPERATOR, 0644, "%s", device_get_nameunit(sc->sc_dev));
 252
 253         usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev);
 254         return 0;
 255 }
 256
 257 static void
 258 ugen_make_devnodes(struct ugen_softc *sc)
 259 {
 260         int endptno;
 261         cdev_t dev;
 262
 263         for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
 264                 if (sc->sc_endpoints[endptno][IN].sc != NULL ||
 265                     sc->sc_endpoints[endptno][OUT].sc != NULL ) {
 266                         /* endpt can be 0x81 and 0x01, representing
 267                          * endpoint address 0x01 and IN/OUT directions.
 268                          * We map both endpts to the same device,
 269                          * IN is reading from it, OUT is writing to it.
 270                          *
 271                          * In the if clause above we check whether one
 272                          * of the structs is populated.
 273                          */
 274                         dev = make_dev(&ugen_ops,
 275                                 UGENMINOR(device_get_unit(sc->sc_dev), endptno),
 276                                 UID_ROOT, GID_OPERATOR, 0644,
 277                                 "%s.%d",
 278                                 device_get_nameunit(sc->sc_dev), endptno);
 279                         if (sc->sc_endpoints[endptno][IN].sc != NULL) {
 280                                 reference_dev(dev);
 281                                 if (sc->sc_endpoints[endptno][IN].dev)
 282                                         release_dev(sc->sc_endpoints[endptno][IN].dev);
 283                                 sc->sc_endpoints[endptno][IN].dev = dev;
 284                         }
 285                         if (sc->sc_endpoints[endptno][OUT].sc != NULL) {
 286                                 reference_dev(dev);
 287                                 if (sc->sc_endpoints[endptno][OUT].dev)
 288                                         release_dev(sc->sc_endpoints[endptno][OUT].dev);
 289                                 sc->sc_endpoints[endptno][OUT].dev = dev;
 290                         }
 291                 }
 292         }
 293 }
 294
 295 static void
 296 ugen_destroy_devnodes(struct ugen_softc *sc)
 297 {
 298         int endptno, prev_sc_dying;
 299         cdev_t dev;
 300
 301         prev_sc_dying = sc->sc_dying;
 302         sc->sc_dying = 1;
 303
 304         /* destroy all devices for the other (existing) endpoints as well */
 305         for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
 306                 if (sc->sc_endpoints[endptno][IN].sc != NULL ||
 307                     sc->sc_endpoints[endptno][OUT].sc != NULL ) {
 308                         /* endpt can be 0x81 and 0x01, representing
 309                          * endpoint address 0x01 and IN/OUT directions.
 310                          * We map both endpoint addresses to the same device,
 311                          * IN is reading from it, OUT is writing to it.
 312                          *
 313                          * In the if clause above we check whether one
 314                          * of the structs is populated.
 315                          */
 316                         dev = sc->sc_endpoints[endptno][IN].dev;
 317                         if (dev != NULL) {
 318                                 destroy_dev(dev);
 319                                 sc->sc_endpoints[endptno][IN].dev = NULL;
 320                         }
 321                         dev = sc->sc_endpoints[endptno][OUT].dev;
 322                         if (dev != NULL) {
 323                                 destroy_dev(dev);
 324                                 sc->sc_endpoints[endptno][OUT].dev = NULL;
 325                         }
 326                 }
 327         }
 328         sc->sc_dying = prev_sc_dying;
 329 }
 330
 331 static int
 332 ugen_set_config(struct ugen_softc *sc, int configno)
 333 {
 334         usbd_device_handle dev = sc->sc_udev;
 335         usbd_interface_handle iface;
 336         usb_endpoint_descriptor_t *ed;
 337         struct ugen_endpoint *sce;
 338         u_int8_t niface, nendpt;
 339         int ifaceno, endptno, endpt;
 340         usbd_status err;
 341         int dir;
 342
 343         DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n",
 344                     device_get_nameunit(sc->sc_dev), configno, sc));
 345
 346         ugen_destroy_devnodes(sc);
 347
 348         /* We start at 1, not 0, because we don't care whether the
 349          * control endpoint is open or not. It is always present.
 350          */
 351         for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
 352                 if (sc->sc_is_open[endptno]) {
 353                         DPRINTFN(1,
 354                              ("ugen_set_config: %s - endpoint %d is open\n",
 355                               device_get_nameunit(sc->sc_dev), endptno));
 356                         return (USBD_IN_USE);
 357                 }
 358         }
 359
 360         /* Avoid setting the current value. */
 361         if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) {
 362                 err = usbd_set_config_no(dev, configno, 1);
 363                 if (err)
 364                         return (err);
 365         }
 366
 367         err = usbd_interface_count(dev, &niface);
 368         if (err)
 369                 return (err);
 370         memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints);
 371         for (ifaceno = 0; ifaceno < niface; ifaceno++) {
 372                 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno));
 373                 err = usbd_device2interface_handle(dev, ifaceno, &iface);
 374                 if (err)
 375                         return (err);
 376                 err = usbd_endpoint_count(iface, &nendpt);
 377                 if (err)
 378                         return (err);
 379                 for (endptno = 0; endptno < nendpt; endptno++) {
 380                         ed = usbd_interface2endpoint_descriptor(iface,endptno);
 381                         endpt = ed->bEndpointAddress;
 382                         dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
 383                         sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
 384                         DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x"
 385                                     "(%d,%d), sce=%p\n",
 386                                     endptno, endpt, UE_GET_ADDR(endpt),
 387                                     UE_GET_DIR(endpt), sce));
 388                         sce->sc = sc;
 389                         sce->edesc = ed;
 390                         sce->iface = iface;
 391                 }
 392         }
 393
 394         ugen_make_devnodes(sc);
 395
 396         return (USBD_NORMAL_COMPLETION);
 397 }
 398
 399 int
 400 ugenopen(struct dev_open_args *ap)
 401 {
 402         cdev_t dev = ap->a_head.a_dev;
 403         struct ugen_softc *sc;
 404         int unit = UGENUNIT(dev);
 405         int endpt = UGENENDPOINT(dev);
 406         usb_endpoint_descriptor_t *edesc;
 407         struct ugen_endpoint *sce;
 408         int dir, isize;
 409         usbd_status err;
 410         usbd_xfer_handle xfer;
 411         void *buf;
 412         int i, j;
 413
 414         sc = devclass_get_softc(ugen_devclass, unit);
 415         if (sc == NULL)
 416                 return (ENXIO);
 417
 418         DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n",
 419                      ap->a_oflags, ap->a_devtype, unit, endpt));
 420
 421         if (sc->sc_dying)
 422                 return (ENXIO);
 423
 424         if (sc->sc_is_open[endpt])
 425                 return (EBUSY);
 426
 427         if (endpt == USB_CONTROL_ENDPOINT) {
 428                 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1;
 429                 return (0);
 430         }
 431
 432         /* Make sure there are pipes for all directions. */
 433         for (dir = OUT; dir <= IN; dir++) {
 434                 if (ap->a_oflags & (dir == OUT ? FWRITE : FREAD)) {
 435                         sce = &sc->sc_endpoints[endpt][dir];
 436                         if (sce == 0 || sce->edesc == 0)
 437                                 return (ENXIO);
 438                 }
 439         }
 440
 441         /* Actually open the pipes. */
 442         /* XXX Should back out properly if it fails. */
 443         for (dir = OUT; dir <= IN; dir++) {
 444                 if (!(ap->a_oflags & (dir == OUT ? FWRITE : FREAD)))
 445                         continue;
 446                 sce = &sc->sc_endpoints[endpt][dir];
 447                 sce->state = 0;
 448                 sce->timeout = USBD_NO_TIMEOUT;
 449                 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n",
 450                              sc, endpt, dir, sce));
 451                 edesc = sce->edesc;
 452                 switch (edesc->bmAttributes & UE_XFERTYPE) {
 453                 case UE_INTERRUPT:
 454                         if (dir == OUT) {
 455                                 err = usbd_open_pipe(sce->iface,
 456                                     edesc->bEndpointAddress, 0, &sce->pipeh);
 457                                 if (err)
 458                                         return (EIO);
 459                                 break;
 460                         }
 461                         isize = UGETW(edesc->wMaxPacketSize);
 462                         if (isize == 0) /* shouldn't happen */
 463                                 return (EINVAL);
 464                         sce->ibuf = kmalloc(isize, M_USBDEV, M_WAITOK);
 465                         DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n",
 466                                      endpt, isize));
 467                         if ((clist_alloc_cblocks(&sce->q, UGEN_IBSIZE,
 468                                                  UGEN_IBSIZE), 0) == -1)
 469                                 return (ENOMEM);
 470                         err = usbd_open_pipe_intr(sce->iface,
 471                                 edesc->bEndpointAddress,
 472                                 USBD_SHORT_XFER_OK, &sce->pipeh, sce,
 473                                 sce->ibuf, isize, ugenintr,
 474                                 USBD_DEFAULT_INTERVAL);
 475                         if (err) {
 476                                 kfree(sce->ibuf, M_USBDEV);
 477                                 clist_free_cblocks(&sce->q);
 478                                 return (EIO);
 479                         }
 480                         DPRINTFN(5, ("ugenopen: interrupt open done\n"));
 481                         break;
 482                 case UE_BULK:
 483                         err = usbd_open_pipe(sce->iface,
 484                                   edesc->bEndpointAddress, 0, &sce->pipeh);
 485                         if (err)
 486                                 return (EIO);
 487                         break;
 488                 case UE_ISOCHRONOUS:
 489                         if (dir == OUT)
 490                                 return (EINVAL);
 491                         isize = UGETW(edesc->wMaxPacketSize);
 492                         if (isize == 0) /* shouldn't happen */
 493                                 return (EINVAL);
 494                         sce->ibuf = kmalloc(isize * UGEN_NISOFRAMES,
 495                                 M_USBDEV, M_WAITOK);
 496                         sce->cur = sce->fill = sce->ibuf;
 497                         sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES;
 498                         DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n",
 499                                      endpt, isize));
 500                         err = usbd_open_pipe(sce->iface,
 501                                   edesc->bEndpointAddress, 0, &sce->pipeh);
 502                         if (err) {
 503                                 kfree(sce->ibuf, M_USBDEV);
 504                                 return (EIO);
 505                         }
 506                         for(i = 0; i < UGEN_NISOREQS; ++i) {
 507                                 sce->isoreqs[i].sce = sce;
 508                                 xfer = usbd_alloc_xfer(sc->sc_udev);
 509                                 if (xfer == 0)
 510                                         goto bad;
 511                                 sce->isoreqs[i].xfer = xfer;
 512                                 buf = usbd_alloc_buffer
 513                                         (xfer, isize * UGEN_NISORFRMS);
 514                                 if (buf == 0) {
 515                                         i++;
 516                                         goto bad;
 517                                 }
 518                                 sce->isoreqs[i].dmabuf = buf;
 519                                 for(j = 0; j < UGEN_NISORFRMS; ++j)
 520                                         sce->isoreqs[i].sizes[j] = isize;
 521                                 usbd_setup_isoc_xfer
 522                                         (xfer, sce->pipeh, &sce->isoreqs[i],
 523                                          sce->isoreqs[i].sizes,
 524                                          UGEN_NISORFRMS, USBD_NO_COPY,
 525                                          ugen_isoc_rintr);
 526                                 (void)usbd_transfer(xfer);
 527                         }
 528                         DPRINTFN(5, ("ugenopen: isoc open done\n"));
 529                         break;
 530                 bad:
 531                         while (--i >= 0) /* implicit buffer free */
 532                                 usbd_free_xfer(sce->isoreqs[i].xfer);
 533                         return (ENOMEM);
 534                 case UE_CONTROL:
 535                         sce->timeout = USBD_DEFAULT_TIMEOUT;
 536                         return (EINVAL);
 537                 }
 538         }
 539         sc->sc_is_open[endpt] = 1;
 540         return (0);
 541 }
 542
 543 int
 544 ugenclose(struct dev_close_args *ap)
 545 {
 546         cdev_t dev = ap->a_head.a_dev;
 547         int endpt = UGENENDPOINT(dev);
 548         struct ugen_softc *sc;
 549         struct ugen_endpoint *sce;
 550         int dir;
 551         int i;
 552
 553         sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
 554
 555         DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n",
 556                      ap->a_fflag, ap->a_devtype, UGENUNIT(dev), endpt));
 557
 558 #ifdef DIAGNOSTIC
 559         if (!sc->sc_is_open[endpt]) {
 560                 kprintf("ugenclose: not open\n");
 561                 return (EINVAL);
 562         }
 563 #endif
 564
 565         if (endpt == USB_CONTROL_ENDPOINT) {
 566                 DPRINTFN(5, ("ugenclose: close control\n"));
 567                 sc->sc_is_open[endpt] = 0;
 568                 return (0);
 569         }
 570
 571         for (dir = OUT; dir <= IN; dir++) {
 572                 if (!(ap->a_fflag & (dir == OUT ? FWRITE : FREAD)))
 573                         continue;
 574                 sce = &sc->sc_endpoints[endpt][dir];
 575                 if (sce->pipeh == NULL)
 576                         continue;
 577                 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n",
 578                              endpt, dir, sce));
 579
 580                 usbd_abort_pipe(sce->pipeh);
 581                 usbd_close_pipe(sce->pipeh);
 582                 sce->pipeh = NULL;
 583
 584                 switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
 585                 case UE_INTERRUPT:
 586                         ndflush(&sce->q, sce->q.c_cc);
 587                         clist_free_cblocks(&sce->q);
 588                         break;
 589                 case UE_ISOCHRONOUS:
 590                         for (i = 0; i < UGEN_NISOREQS; ++i)
 591                                 usbd_free_xfer(sce->isoreqs[i].xfer);
 592                 default:
 593                         break;
 594                 }
 595
 596                 if (sce->ibuf != NULL) {
 597                         kfree(sce->ibuf, M_USBDEV);
 598                         sce->ibuf = NULL;
 599                         clist_free_cblocks(&sce->q);
 600                 }
 601         }
 602         sc->sc_is_open[endpt] = 0;
 603
 604         return (0);
 605 }
 606
 607 static int
 608 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag)
 609 {
 610         struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN];
 611         u_int32_t n, tn;
 612         char *buf;
 613         usbd_xfer_handle xfer;
 614         usbd_status err;
 615         int error = 0;
 616         int ugen_bbsize;
 617         u_char buffer[UGEN_CHUNK];
 618
 619         DPRINTFN(5, ("%s: ugenread: %d\n", device_get_nameunit(sc->sc_dev), endpt));
 620
 621         if (sc->sc_dying)
 622                 return (EIO);
 623
 624         if (endpt == USB_CONTROL_ENDPOINT)
 625                 return (ENODEV);
 626
 627 #ifdef DIAGNOSTIC
 628         if (sce->edesc == NULL) {
 629                 kprintf("ugenread: no edesc\n");
 630                 return (EIO);
 631         }
 632         if (sce->pipeh == NULL) {
 633                 kprintf("ugenread: no pipe\n");
 634                 return (EIO);
 635         }
 636 #endif
 637
 638         buf = getugenbuf(ugen_bufsize, &ugen_bbsize);
 639
 640         switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
 641         case UE_INTERRUPT:
 642                 /* Block until activity occurred. */
 643                 crit_enter();
 644                 while (sce->q.c_cc == 0) {
 645                         if (flag & IO_NDELAY) {
 646                                 crit_exit();
 647                                 error = EWOULDBLOCK;
 648                                 goto done;
 649                         }
 650                         sce->state |= UGEN_ASLP;
 651                         DPRINTFN(5, ("ugenread: sleep on %p\n", sce));
 652                         error = tsleep(sce, PCATCH, "ugenri",
 653                             (sce->timeout * hz + 999) / 1000);
 654                         sce->state &= ~UGEN_ASLP;
 655                         DPRINTFN(5, ("ugenread: woke, error=%d\n", error));
 656                         if (sc->sc_dying)
 657                                 error = EIO;
 658                         if (error == EAGAIN) {
 659                                 error = 0;      /* timeout, return 0 bytes */
 660                                 break;
 661                         }
 662                         if (error)
 663                                 break;
 664                 }
 665                 crit_exit();
 666
 667                 /* Transfer as many chunks as possible. */
 668                 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) {
 669                         n = min(sce->q.c_cc, uio->uio_resid);
 670                         if (n > sizeof(buffer))
 671                                 n = sizeof(buffer);
 672
 673                         /* Remove a small chunk from the input queue. */
 674                         q_to_b(&sce->q, buffer, n);
 675                         DPRINTFN(5, ("ugenread: got %d chars\n", n));
 676
 677                         /* Copy the data to the user process. */
 678                         error = uiomove(buffer, n, uio);
 679                         if (error)
 680                                 break;
 681                 }
 682                 break;
 683         case UE_BULK:
 684                 xfer = usbd_alloc_xfer(sc->sc_udev);
 685                 if (xfer == 0) {
 686                         error = ENOMEM;
 687                         goto done;
 688                 }
 689                 while ((n = min(ugen_bbsize, uio->uio_resid)) != 0) {
 690                         DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n));
 691                         tn = n;
 692                         err = usbd_bulk_transfer(
 693                                 xfer, sce->pipeh,
 694                                 sce->state & UGEN_SHORT_OK ?
 695                                     USBD_SHORT_XFER_OK : 0,
 696                                 sce->timeout, buf, &tn, "ugenrb");
 697                         if (err) {
 698                                 if (err == USBD_INTERRUPTED)
 699                                         error = EINTR;
 700                                 else if (err == USBD_TIMEOUT)
 701                                         error = ETIMEDOUT;
 702                                 else
 703                                         error = EIO;
 704                                 break;
 705                         }
 706                         DPRINTFN(1, ("ugenread: got %d bytes\n", tn));
 707                         error = uiomove(buf, tn, uio);
 708                         if (error || tn < n)
 709                                 break;
 710                 }
 711                 usbd_free_xfer(xfer);
 712                 break;
 713         case UE_ISOCHRONOUS:
 714                 crit_enter();
 715                 while (sce->cur == sce->fill) {
 716                         if (flag & IO_NDELAY) {
 717                                 crit_exit();
 718                                 error = EWOULDBLOCK;
 719                                 goto done;
 720                         }
 721                         sce->state |= UGEN_ASLP;
 722                         DPRINTFN(5, ("ugenread: sleep on %p\n", sce));
 723                         error = tsleep(sce, PCATCH, "ugenri",
 724                             (sce->timeout * hz + 999) / 1000);
 725                         sce->state &= ~UGEN_ASLP;
 726                         DPRINTFN(5, ("ugenread: woke, error=%d\n", error));
 727                         if (sc->sc_dying)
 728                                 error = EIO;
 729                         if (error == EAGAIN) {
 730                                 error = 0;      /* timeout, return 0 bytes */
 731                                 break;
 732                         }
 733                         if (error)
 734                                 break;
 735                 }
 736
 737                 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) {
 738                         if (sce->fill > sce->cur)
 739                                 n = min(sce->fill - sce->cur, uio->uio_resid);
 740                         else
 741                                 n = min(sce->limit - sce->cur, uio->uio_resid);
 742
 743                         DPRINTFN(5, ("ugenread: isoc got %d chars\n", n));
 744
 745                         /* Copy the data to the user process. */
 746                         error = uiomove(sce->cur, n, uio);
 747                         if (error)
 748                                 break;
 749                         sce->cur += n;
 750                         if(sce->cur >= sce->limit)
 751                                 sce->cur = sce->ibuf;
 752                 }
 753                 crit_exit();
 754                 break;
 755
 756
 757         default:
 758                 error = ENXIO;
 759                 break;
 760         }
 761 done:
 762         relugenbuf(buf, ugen_bbsize);
 763         return (error);
 764 }
 765
 766 int
 767 ugenread(struct dev_read_args *ap)
 768 {
 769         cdev_t dev = ap->a_head.a_dev;
 770         int endpt = UGENENDPOINT(dev);
 771         struct ugen_softc *sc;
 772         int error;
 773
 774         sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
 775
 776         if (sc->sc_dying)
 777                 return (EIO);
 778
 779         sc->sc_refcnt++;
 780         error = ugen_do_read(sc, endpt, ap->a_uio, ap->a_ioflag);
 781         if (--sc->sc_refcnt < 0)
 782                 usb_detach_wakeup(sc->sc_dev);
 783         return (error);
 784 }
 785
 786 static int
 787 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, int flag)
 788 {
 789         struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT];
 790         u_int32_t n;
 791         int error = 0;
 792         int ugen_bbsize;
 793         char *buf;
 794         usbd_xfer_handle xfer;
 795         usbd_status err;
 796
 797         DPRINTFN(5, ("%s: ugenwrite: %d\n", device_get_nameunit(sc->sc_dev), endpt));
 798
 799         if (sc->sc_dying)
 800                 return (EIO);
 801
 802         if (endpt == USB_CONTROL_ENDPOINT)
 803                 return (ENODEV);
 804
 805 #ifdef DIAGNOSTIC
 806         if (sce->edesc == NULL) {
 807                 kprintf("ugenwrite: no edesc\n");
 808                 return (EIO);
 809         }
 810         if (sce->pipeh == NULL) {
 811                 kprintf("ugenwrite: no pipe\n");
 812                 return (EIO);
 813         }
 814 #endif
 815
 816         buf = getugenbuf(ugen_bufsize, &ugen_bbsize);
 817
 818         switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
 819         case UE_BULK:
 820                 xfer = usbd_alloc_xfer(sc->sc_udev);
 821                 if (xfer == 0) {
 822                         error = EIO;
 823                         goto done;
 824                 }
 825                 while ((n = min(ugen_bbsize, uio->uio_resid)) != 0) {
 826                         error = uiomove(buf, n, uio);
 827                         if (error)
 828                                 break;
 829                         DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n));
 830                         err = usbd_bulk_transfer(xfer, sce->pipeh, 0,
 831                                   sce->timeout, buf, &n,"ugenwb");
 832                         if (err) {
 833                                 if (err == USBD_INTERRUPTED)
 834                                         error = EINTR;
 835                                 else if (err == USBD_TIMEOUT)
 836                                         error = ETIMEDOUT;
 837                                 else
 838                                         error = EIO;
 839                                 break;
 840                         }
 841                 }
 842                 usbd_free_xfer(xfer);
 843                 break;
 844         case UE_INTERRUPT:
 845                 xfer = usbd_alloc_xfer(sc->sc_udev);
 846                 if (xfer == 0) {
 847                         error = EIO;
 848                         goto done;
 849                 }
 850                 while ((n = min(UGETW(sce->edesc->wMaxPacketSize),
 851                     uio->uio_resid)) != 0) {
 852                         error = uiomove(buf, n, uio);
 853                         if (error)
 854                                 break;
 855                         DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n));
 856                         err = usbd_intr_transfer(xfer, sce->pipeh, 0,
 857                                   sce->timeout, buf, &n,"ugenwi");
 858                         if (err) {
 859                                 if (err == USBD_INTERRUPTED)
 860                                         error = EINTR;
 861                                 else if (err == USBD_TIMEOUT)
 862                                         error = ETIMEDOUT;
 863                                 else
 864                                         error = EIO;
 865                                 break;
 866                         }
 867                 }
 868                 usbd_free_xfer(xfer);
 869                 break;
 870         default:
 871                 error = ENXIO;
 872                 break;
 873         }
 874 done:
 875         relugenbuf(buf, ugen_bbsize);
 876         return (error);
 877 }
 878
 879 int
 880 ugenwrite(struct dev_write_args *ap)
 881 {
 882         cdev_t dev = ap->a_head.a_dev;
 883         int endpt = UGENENDPOINT(dev);
 884         struct ugen_softc *sc;
 885         int error;
 886
 887         sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
 888
 889         if (sc->sc_dying)
 890                 return (EIO);
 891
 892         sc->sc_refcnt++;
 893         error = ugen_do_write(sc, endpt, ap->a_uio, ap->a_ioflag);
 894         if (--sc->sc_refcnt < 0)
 895                 usb_detach_wakeup(sc->sc_dev);
 896         return (error);
 897 }
 898
 899 static int
 900 ugen_detach(device_t self)
 901 {
 902         struct ugen_softc *sc = device_get_softc(self);
 903         struct ugen_endpoint *sce;
 904         int i, dir;
 905
 906         DPRINTF(("ugen_detach: sc=%p\n", sc));
 907
 908         sc->sc_dying = 1;
 909         /* Abort all pipes.  Causes processes waiting for transfer to wake. */
 910         for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
 911                 for (dir = OUT; dir <= IN; dir++) {
 912                         sce = &sc->sc_endpoints[i][dir];
 913                         if (sce && sce->pipeh)
 914                                 usbd_abort_pipe(sce->pipeh);
 915                         selwakeup(&sce->rsel);
 916                 }
 917         }
 918         crit_enter();
 919         if (--sc->sc_refcnt >= 0) {
 920                 /* Wake everyone */
 921                 for (i = 0; i < USB_MAX_ENDPOINTS; i++)
 922                         wakeup(&sc->sc_endpoints[i][IN]);
 923                 /* Wait for processes to go away. */
 924                 usb_detach_wait(sc->sc_dev);
 925         }
 926         crit_exit();
 927
 928         /* destroy the device for the control endpoint */
 929         ugen_destroy_devnodes(sc);
 930         dev_ops_remove(&ugen_ops,
 931                     UGENUNITMASK, UGENMINOR(device_get_unit(sc->sc_dev), 0));
 932         usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev);
 933         return (0);
 934 }
 935
 936 static void
 937 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
 938 {
 939         struct ugen_endpoint *sce = addr;
 940         /*struct ugen_softc *sc = sce->sc;*/
 941         u_int32_t count;
 942         u_char *ibuf;
 943
 944         if (status == USBD_CANCELLED)
 945                 return;
 946
 947         if (status != USBD_NORMAL_COMPLETION) {
 948                 DPRINTF(("ugenintr: status=%d\n", status));
 949                 if (status == USBD_STALLED)
 950                     usbd_clear_endpoint_stall_async(sce->pipeh);
 951                 return;
 952         }
 953
 954         usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
 955         ibuf = sce->ibuf;
 956
 957         DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n",
 958                      xfer, status, count));
 959         DPRINTFN(5, ("          data = %02x %02x %02x\n",
 960                      ibuf[0], ibuf[1], ibuf[2]));
 961
 962         (void)b_to_q(ibuf, count, &sce->q);
 963
 964         if (sce->state & UGEN_ASLP) {
 965                 sce->state &= ~UGEN_ASLP;
 966                 DPRINTFN(5, ("ugen_intr: waking %p\n", sce));
 967                 wakeup(sce);
 968         }
 969         selwakeup(&sce->rsel);
 970 }
 971
 972 static void
 973 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr,
 974                 usbd_status status)
 975 {
 976         struct isoreq *req = addr;
 977         struct ugen_endpoint *sce = req->sce;
 978         u_int32_t count, n;
 979         int i, isize;
 980
 981         /* Return if we are aborting. */
 982         if (status == USBD_CANCELLED)
 983                 return;
 984
 985         usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
 986         DPRINTFN(5,("ugen_isoc_rintr: xfer %d, count=%d\n",
 987                     (int)(req - sce->isoreqs),
 988                     count));
 989
 990         /* throw away oldest input if the buffer is full */
 991         if(sce->fill < sce->cur && sce->cur <= sce->fill + count) {
 992                 sce->cur += count;
 993                 if(sce->cur >= sce->limit)
 994                         sce->cur = sce->ibuf + (sce->limit - sce->cur);
 995                 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n",
 996                              count));
 997         }
 998
 999         isize = UGETW(sce->edesc->wMaxPacketSize);
1000         for (i = 0; i < UGEN_NISORFRMS; i++) {
1001                 u_int32_t actlen = req->sizes[i];
1002                 char const *buf = (char const *)req->dmabuf + isize * i;
1003
1004                 /* copy data to buffer */
1005                 while (actlen > 0) {
1006                         n = min(actlen, sce->limit - sce->fill);
1007                         memcpy(sce->fill, buf, n);
1008
1009                         buf += n;
1010                         actlen -= n;
1011                         sce->fill += n;
1012                         if(sce->fill == sce->limit)
1013                                 sce->fill = sce->ibuf;
1014                 }
1015
1016                 /* setup size for next transfer */
1017                 req->sizes[i] = isize;
1018         }
1019
1020         usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS,
1021                              USBD_NO_COPY, ugen_isoc_rintr);
1022         (void)usbd_transfer(xfer);
1023
1024         if (sce->state & UGEN_ASLP) {
1025                 sce->state &= ~UGEN_ASLP;
1026                 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce));
1027                 wakeup(sce);
1028         }
1029         selwakeup(&sce->rsel);
1030 }
1031
1032 static usbd_status
1033 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno)
1034 {
1035         usbd_interface_handle iface;
1036         usb_endpoint_descriptor_t *ed;
1037         usbd_status err;
1038         struct ugen_endpoint *sce;
1039         u_int8_t niface, nendpt, endptno, endpt;
1040         int dir;
1041
1042         DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno));
1043
1044         err = usbd_interface_count(sc->sc_udev, &niface);
1045         if (err)
1046                 return (err);
1047         if (ifaceidx < 0 || ifaceidx >= niface)
1048                 return (USBD_INVAL);
1049
1050         err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface);
1051         if (err)
1052                 return (err);
1053         err = usbd_endpoint_count(iface, &nendpt);
1054         if (err)
1055                 return (err);
1056
1057         /* destroy the existing devices, we remake the new ones in a moment */
1058         ugen_destroy_devnodes(sc);
1059
1060         /* XXX should only do this after setting new altno has succeeded */
1061         for (endptno = 0; endptno < nendpt; endptno++) {
1062                 ed = usbd_interface2endpoint_descriptor(iface,endptno);
1063                 endpt = ed->bEndpointAddress;
1064                 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
1065                 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
1066                 sce->sc = 0;
1067                 sce->edesc = 0;
1068                 sce->iface = 0;
1069         }
1070
1071         /* change setting */
1072         err = usbd_set_interface(iface, altno);
1073         if (err)
1074                 return (err);
1075
1076         err = usbd_endpoint_count(iface, &nendpt);
1077         if (err)
1078                 return (err);
1079         for (endptno = 0; endptno < nendpt; endptno++) {
1080                 ed = usbd_interface2endpoint_descriptor(iface,endptno);
1081                 endpt = ed->bEndpointAddress;
1082                 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
1083                 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
1084                 sce->sc = sc;
1085                 sce->edesc = ed;
1086                 sce->iface = iface;
1087         }
1088
1089         /* make the new devices */
1090         ugen_make_devnodes(sc);
1091
1092         return (0);
1093 }
1094
1095 /* Retrieve a complete descriptor for a certain device and index. */
1096 static usb_config_descriptor_t *
1097 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp)
1098 {
1099         usb_config_descriptor_t *cdesc, *tdesc, cdescr;
1100         int len;
1101         usbd_status err;
1102
1103         if (index == USB_CURRENT_CONFIG_INDEX) {
1104                 tdesc = usbd_get_config_descriptor(sc->sc_udev);
1105                 len = UGETW(tdesc->wTotalLength);
1106                 if (lenp)
1107                         *lenp = len;
1108                 cdesc = kmalloc(len, M_TEMP, M_INTWAIT);
1109                 memcpy(cdesc, tdesc, len);
1110                 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len));
1111         } else {
1112                 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr);
1113                 if (err)
1114                         return (0);
1115                 len = UGETW(cdescr.wTotalLength);
1116                 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len));
1117                 if (lenp)
1118                         *lenp = len;
1119                 cdesc = kmalloc(len, M_TEMP, M_INTWAIT);
1120                 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len);
1121                 if (err) {
1122                         kfree(cdesc, M_TEMP);
1123                         return (0);
1124                 }
1125         }
1126         return (cdesc);
1127 }
1128
1129 static int
1130 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx)
1131 {
1132         usbd_interface_handle iface;
1133         usbd_status err;
1134
1135         err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface);
1136         if (err)
1137                 return (-1);
1138         return (usbd_get_interface_altindex(iface));
1139 }
1140
1141 static int
1142 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd,
1143               caddr_t addr, int flag)
1144 {
1145         struct ugen_endpoint *sce;
1146         usbd_status err;
1147         usbd_interface_handle iface;
1148         struct usb_config_desc *cd;
1149         usb_config_descriptor_t *cdesc;
1150         struct usb_interface_desc *id;
1151         usb_interface_descriptor_t *idesc;
1152         struct usb_endpoint_desc *ed;
1153         usb_endpoint_descriptor_t *edesc;
1154         struct usb_alt_interface *ai;
1155         struct usb_string_desc *si;
1156         u_int8_t conf, alt;
1157
1158         DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd));
1159         if (sc->sc_dying)
1160                 return (EIO);
1161
1162         switch (cmd) {
1163         case USB_SET_SHORT_XFER:
1164                 /* This flag only affects read */
1165                 if (endpt == USB_CONTROL_ENDPOINT)
1166                         return (EINVAL);
1167                 sce = &sc->sc_endpoints[endpt][IN];
1168
1169                 if (sce->pipeh == NULL) {
1170                         kprintf("ugenioctl: USB_SET_SHORT_XFER, no pipe\n");
1171                         return (EIO);
1172                 }
1173
1174                 if (*(int *)addr)
1175                         sce->state |= UGEN_SHORT_OK;
1176                 else
1177                         sce->state &= ~UGEN_SHORT_OK;
1178                 return (0);
1179         case USB_SET_TIMEOUT:
1180                 sce = &sc->sc_endpoints[endpt][IN];
1181                 sce->timeout = *(int *)addr;
1182                 sce = &sc->sc_endpoints[endpt][OUT];
1183                 sce->timeout = *(int *)addr;
1184                 return (0);
1185         default:
1186                 break;
1187         }
1188
1189         if (endpt != USB_CONTROL_ENDPOINT)
1190                 return (EINVAL);
1191
1192         switch (cmd) {
1193 #ifdef USB_DEBUG
1194         case USB_SETDEBUG:
1195                 ugendebug = *(int *)addr;
1196                 break;
1197 #endif
1198         case USB_GET_CONFIG:
1199                 err = usbd_get_config(sc->sc_udev, &conf);
1200                 if (err)
1201                         return (EIO);
1202                 *(int *)addr = conf;
1203                 break;
1204         case USB_SET_CONFIG:
1205                 if (!(flag & FWRITE))
1206                         return (EPERM);
1207                 err = ugen_set_config(sc, *(int *)addr);
1208                 switch (err) {
1209                 case USBD_NORMAL_COMPLETION:
1210                         break;
1211                 case USBD_IN_USE:
1212                         return (EBUSY);
1213                 default:
1214                         return (EIO);
1215                 }
1216                 break;
1217         case USB_GET_ALTINTERFACE:
1218                 ai = (struct usb_alt_interface *)addr;
1219                 err = usbd_device2interface_handle(sc->sc_udev,
1220                           ai->uai_interface_index, &iface);
1221                 if (err)
1222                         return (EINVAL);
1223                 idesc = usbd_get_interface_descriptor(iface);
1224                 if (idesc == NULL)
1225                         return (EIO);
1226                 ai->uai_alt_no = idesc->bAlternateSetting;
1227                 break;
1228         case USB_SET_ALTINTERFACE:
1229                 if (!(flag & FWRITE))
1230                         return (EPERM);
1231                 ai = (struct usb_alt_interface *)addr;
1232                 err = usbd_device2interface_handle(sc->sc_udev,
1233                           ai->uai_interface_index, &iface);
1234                 if (err)
1235                         return (EINVAL);
1236                 err = ugen_set_interface(sc, ai->uai_interface_index, ai->uai_alt_no);
1237                 if (err)
1238                         return (EINVAL);
1239                 break;
1240         case USB_GET_NO_ALT:
1241                 ai = (struct usb_alt_interface *)addr;
1242                 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0);
1243                 if (cdesc == NULL)
1244                         return (EINVAL);
1245                 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0);
1246                 if (idesc == NULL) {
1247                         kfree(cdesc, M_TEMP);
1248                         return (EINVAL);
1249                 }
1250                 ai->uai_alt_no = usbd_get_no_alts(cdesc, idesc->bInterfaceNumber);
1251                 kfree(cdesc, M_TEMP);
1252                 break;
1253         case USB_GET_DEVICE_DESC:
1254                 *(usb_device_descriptor_t *)addr =
1255                         *usbd_get_device_descriptor(sc->sc_udev);
1256                 break;
1257         case USB_GET_CONFIG_DESC:
1258                 cd = (struct usb_config_desc *)addr;
1259                 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0);
1260                 if (cdesc == NULL)
1261                         return (EINVAL);
1262                 cd->ucd_desc = *cdesc;
1263                 kfree(cdesc, M_TEMP);
1264                 break;
1265         case USB_GET_INTERFACE_DESC:
1266                 id = (struct usb_interface_desc *)addr;
1267                 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0);
1268                 if (cdesc == NULL)
1269                         return (EINVAL);
1270                 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX &&
1271                     id->uid_alt_index == USB_CURRENT_ALT_INDEX)
1272                         alt = ugen_get_alt_index(sc, id->uid_interface_index);
1273                 else
1274                         alt = id->uid_alt_index;
1275                 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt);
1276                 if (idesc == NULL) {
1277                         kfree(cdesc, M_TEMP);
1278                         return (EINVAL);
1279                 }
1280                 id->uid_desc = *idesc;
1281                 kfree(cdesc, M_TEMP);
1282                 break;
1283         case USB_GET_ENDPOINT_DESC:
1284                 ed = (struct usb_endpoint_desc *)addr;
1285                 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0);
1286                 if (cdesc == NULL)
1287                         return (EINVAL);
1288                 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX &&
1289                     ed->ued_alt_index == USB_CURRENT_ALT_INDEX)
1290                         alt = ugen_get_alt_index(sc, ed->ued_interface_index);
1291                 else
1292                         alt = ed->ued_alt_index;
1293                 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index,
1294                                         alt, ed->ued_endpoint_index);
1295                 if (edesc == NULL) {
1296                         kfree(cdesc, M_TEMP);
1297                         return (EINVAL);
1298                 }
1299                 ed->ued_desc = *edesc;
1300                 kfree(cdesc, M_TEMP);
1301                 break;
1302         case USB_GET_FULL_DESC:
1303         {
1304                 int len;
1305                 struct iovec iov;
1306                 struct uio uio;
1307                 struct usb_full_desc *fd = (struct usb_full_desc *)addr;
1308                 int error;
1309
1310                 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len);
1311                 if (len > fd->ufd_size)
1312                         len = fd->ufd_size;
1313                 iov.iov_base = (caddr_t)fd->ufd_data;
1314                 iov.iov_len = len;
1315                 uio.uio_iov = &iov;
1316                 uio.uio_iovcnt = 1;
1317                 uio.uio_resid = len;
1318                 uio.uio_offset = 0;
1319                 uio.uio_segflg = UIO_USERSPACE;
1320                 uio.uio_rw = UIO_READ;
1321                 uio.uio_td = curthread;
1322                 error = uiomove((void *)cdesc, len, &uio);
1323                 kfree(cdesc, M_TEMP);
1324                 return (error);
1325         }
1326         case USB_GET_STRING_DESC:
1327         {
1328                 int size;
1329
1330                 si = (struct usb_string_desc *)addr;
1331                 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index,
1332                           si->usd_language_id, &si->usd_desc, &size);
1333                 if (err)
1334                         return (EINVAL);
1335                 break;
1336         }
1337         case USB_DO_REQUEST:
1338         {
1339                 struct usb_ctl_request *ur = (void *)addr;
1340                 int len = UGETW(ur->ucr_request.wLength);
1341                 struct iovec iov;
1342                 struct uio uio;
1343                 void *ptr = 0;
1344                 usbd_status err;
1345                 int error = 0;
1346
1347                 if (!(flag & FWRITE))
1348                         return (EPERM);
1349                 /* Avoid requests that would damage the bus integrity. */
1350                 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE &&
1351                      ur->ucr_request.bRequest == UR_SET_ADDRESS) ||
1352                     (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE &&
1353                      ur->ucr_request.bRequest == UR_SET_CONFIG) ||
1354                     (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE &&
1355                      ur->ucr_request.bRequest == UR_SET_INTERFACE))
1356                         return (EINVAL);
1357
1358                 if (len < 0 || len > 32767)
1359                         return (EINVAL);
1360                 if (len != 0) {
1361                         iov.iov_base = (caddr_t)ur->ucr_data;
1362                         iov.iov_len = len;
1363                         uio.uio_iov = &iov;
1364                         uio.uio_iovcnt = 1;
1365                         uio.uio_resid = len;
1366                         uio.uio_offset = 0;
1367                         uio.uio_segflg = UIO_USERSPACE;
1368                         uio.uio_rw =
1369                                 ur->ucr_request.bmRequestType & UT_READ ?
1370                                 UIO_READ : UIO_WRITE;
1371                         uio.uio_td = curthread;
1372                         ptr = kmalloc(len, M_TEMP, M_WAITOK);
1373                         if (uio.uio_rw == UIO_WRITE) {
1374                                 error = uiomove(ptr, len, &uio);
1375                                 if (error)
1376                                         goto ret;
1377                         }
1378                 }
1379                 sce = &sc->sc_endpoints[endpt][IN];
1380                 err = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request,
1381                           ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout);
1382                 if (err) {
1383                         error = EIO;
1384                         goto ret;
1385                 }
1386                 if (len != 0) {
1387                         if (uio.uio_rw == UIO_READ) {
1388                                 error = uiomove(ptr, len, &uio);
1389                                 if (error)
1390                                         goto ret;
1391                         }
1392                 }
1393         ret:
1394                 if (ptr)
1395                         kfree(ptr, M_TEMP);
1396                 return (error);
1397         }
1398         case USB_GET_DEVICEINFO:
1399                 usbd_fill_deviceinfo(sc->sc_udev,
1400                     (struct usb_device_info *)addr, 1);
1401                 break;
1402         default:
1403                 return (EINVAL);
1404         }
1405         return (0);
1406 }
1407
1408 int
1409 ugenioctl(struct dev_ioctl_args *ap)
1410 {
1411         cdev_t dev = ap->a_head.a_dev;
1412         int endpt = UGENENDPOINT(dev);
1413         struct ugen_softc *sc;
1414         int error;
1415
1416         sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
1417         if (sc->sc_dying)
1418                 return (EIO);
1419
1420         sc->sc_refcnt++;
1421         error = ugen_do_ioctl(sc, endpt, ap->a_cmd, ap->a_data, ap->a_fflag);
1422         if (--sc->sc_refcnt < 0)
1423                 usb_detach_wakeup(sc->sc_dev);
1424         return (error);
1425 }
1426
1427 int
1428 ugenpoll(struct dev_poll_args *ap)
1429 {
1430         cdev_t dev = ap->a_head.a_dev;
1431         struct ugen_softc *sc;
1432         struct ugen_endpoint *sce_in, *sce_out;
1433         usb_endpoint_descriptor_t *edesc;
1434         int revents = 0;
1435
1436         sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
1437
1438         if (sc->sc_dying) {
1439                 return ((ap->a_events & (POLLIN | POLLOUT | POLLRDNORM |
1440                         POLLWRNORM)) | POLLHUP);
1441         }
1442
1443         /* Do not allow to poll a control endpoint */
1444         if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) {
1445                 return (ap->a_events & (POLLIN | POLLOUT | POLLRDNORM |
1446                         POLLWRNORM));
1447         }
1448
1449         sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN];
1450         sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT];
1451         edesc = (sce_in->edesc != NULL) ? sce_in->edesc : sce_out->edesc;
1452         KASSERT(edesc != NULL, ("ugenpoll: NULL edesc"));
1453
1454         if (sce_in->edesc == NULL || sce_in->pipeh == NULL)
1455                 sce_in = NULL;
1456         if (sce_out->edesc == NULL || sce_out->pipeh == NULL)
1457                 sce_out = NULL;
1458
1459         crit_enter();
1460         switch (edesc->bmAttributes & UE_XFERTYPE) {
1461         case UE_INTERRUPT:
1462                 if (sce_in != NULL && (ap->a_events & (POLLIN | POLLRDNORM))) {
1463                         if (sce_in->q.c_cc > 0)
1464                                 revents |= ap->a_events & (POLLIN | POLLRDNORM);
1465                         else
1466                                 selrecord(curthread, &sce_in->rsel);
1467                 }
1468                 if (sce_out != NULL && (ap->a_events & (POLLOUT | POLLWRNORM))) {
1469                         if (sce_out->q.c_cc > 0)
1470                                 revents |= ap->a_events & (POLLOUT | POLLWRNORM);
1471                         else
1472                                 selrecord(curthread, &sce_out->rsel);
1473                 }
1474                 break;
1475         case UE_ISOCHRONOUS:
1476                 if (sce_in != NULL && (ap->a_events & (POLLIN | POLLRDNORM))) {
1477                         if (sce_in->cur != sce_in->fill)
1478                                 revents |= ap->a_events & (POLLIN | POLLRDNORM);
1479                         else
1480                                 selrecord(curthread, &sce_in->rsel);
1481                 }
1482                 if (sce_out != NULL && (ap->a_events & (POLLOUT | POLLWRNORM))) {
1483                         if (sce_out->cur != sce_out->fill)
1484                                 revents |= ap->a_events & (POLLOUT | POLLWRNORM);
1485                         else
1486                                 selrecord(curthread, &sce_out->rsel);
1487                 }
1488                 break;
1489         case UE_BULK:
1490                 /*
1491                  * We have no easy way of determining if a read will
1492                  * yield any data or a write will happen.
1493                  * Pretend they will.
1494                  */
1495                 revents |= ap->a_events &
1496                            (POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM);
1497                 break;
1498         default:
1499                 break;
1500         }
1501         crit_exit();
1502         ap->a_events = revents;
1503         return (0);
1504 }
1505
1506 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0);
1507