sys/dev/usb/usb_generic.c

   1 /* $FreeBSD$ */
   2 /*-
   3  * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include <dev/usb/usb_mfunc.h>
  28 #include <dev/usb/usb.h>
  29 #include <dev/usb/usb_ioctl.h>
  30 #include <dev/usb/usb_error.h>
  31
  32 #define USB_DEBUG_VAR ugen_debug
  33
  34 #include <dev/usb/usb_core.h>
  35 #include <dev/usb/usb_mbuf.h>
  36 #include <dev/usb/usb_dev.h>
  37 #include <dev/usb/usb_process.h>
  38 #include <dev/usb/usb_device.h>
  39 #include <dev/usb/usb_debug.h>
  40 #include <dev/usb/usb_request.h>
  41 #include <dev/usb/usb_busdma.h>
  42 #include <dev/usb/usb_util.h>
  43 #include <dev/usb/usb_hub.h>
  44 #include <dev/usb/usb_generic.h>
  45 #include <dev/usb/usb_transfer.h>
  46
  47 #include <dev/usb/usb_controller.h>
  48 #include <dev/usb/usb_bus.h>
  49
  50 #if USB_HAVE_UGEN
  51
  52 /* defines */
  53
  54 #define UGEN_BULK_FS_BUFFER_SIZE        (64*32) /* bytes */
  55 #define UGEN_BULK_HS_BUFFER_SIZE        (1024*32)       /* bytes */
  56 #define UGEN_HW_FRAMES  50              /* number of milliseconds per transfer */
  57
  58 /* function prototypes */
  59
  60 static usb2_callback_t ugen_read_clear_stall_callback;
  61 static usb2_callback_t ugen_write_clear_stall_callback;
  62 static usb2_callback_t ugen_default_read_callback;
  63 static usb2_callback_t ugen_default_write_callback;
  64 static usb2_callback_t ugen_isoc_read_callback;
  65 static usb2_callback_t ugen_isoc_write_callback;
  66 static usb2_callback_t ugen_default_fs_callback;
  67
  68 static usb2_fifo_open_t ugen_open;
  69 static usb2_fifo_close_t ugen_close;
  70 static usb2_fifo_ioctl_t ugen_ioctl;
  71 static usb2_fifo_ioctl_t ugen_ioctl_post;
  72 static usb2_fifo_cmd_t ugen_start_read;
  73 static usb2_fifo_cmd_t ugen_start_write;
  74 static usb2_fifo_cmd_t ugen_stop_io;
  75
  76 static int      ugen_transfer_setup(struct usb2_fifo *,
  77                      const struct usb2_config *, uint8_t);
  78 static int      ugen_open_pipe_write(struct usb2_fifo *);
  79 static int      ugen_open_pipe_read(struct usb2_fifo *);
  80 static int      ugen_set_config(struct usb2_fifo *, uint8_t);
  81 static int      ugen_set_interface(struct usb2_fifo *, uint8_t, uint8_t);
  82 static int      ugen_get_cdesc(struct usb2_fifo *, struct usb2_gen_descriptor *);
  83 static int      ugen_get_sdesc(struct usb2_fifo *, struct usb2_gen_descriptor *);
  84 static int      ugen_get_iface_driver(struct usb2_fifo *f, struct usb2_gen_descriptor *ugd);
  85 static int      usb2_gen_fill_deviceinfo(struct usb2_fifo *,
  86                     struct usb2_device_info *);
  87 static int      ugen_re_enumerate(struct usb2_fifo *);
  88 static int      ugen_iface_ioctl(struct usb2_fifo *, u_long, void *, int);
  89 static uint8_t  ugen_fs_get_complete(struct usb2_fifo *, uint8_t *);
  90 static int ugen_fs_uninit(struct usb2_fifo *f);
  91
  92 /* structures */
  93
  94 struct usb2_fifo_methods usb2_ugen_methods = {
  95         .f_open = &ugen_open,
  96         .f_close = &ugen_close,
  97         .f_ioctl = &ugen_ioctl,
  98         .f_ioctl_post = &ugen_ioctl_post,
  99         .f_start_read = &ugen_start_read,
 100         .f_stop_read = &ugen_stop_io,
 101         .f_start_write = &ugen_start_write,
 102         .f_stop_write = &ugen_stop_io,
 103 };
 104
 105 #if USB_DEBUG
 106 static int ugen_debug = 0;
 107
 108 SYSCTL_NODE(_hw_usb2, OID_AUTO, ugen, CTLFLAG_RW, 0, "USB generic");
 109 SYSCTL_INT(_hw_usb2_ugen, OID_AUTO, debug, CTLFLAG_RW, &ugen_debug,
 110     0, "Debug level");
 111 #endif
 112
 113
 114 /* prototypes */
 115
 116 static int
 117 ugen_transfer_setup(struct usb2_fifo *f,
 118     const struct usb2_config *setup, uint8_t n_setup)
 119 {
 120         struct usb2_pipe *pipe = f->priv_sc0;
 121         struct usb2_device *udev = f->udev;
 122         uint8_t iface_index = pipe->iface_index;
 123         int error;
 124
 125         mtx_unlock(f->priv_mtx);
 126
 127         /*
 128          * "usb2_transfer_setup()" can sleep so one needs to make a wrapper,
 129          * exiting the mutex and checking things
 130          */
 131         error = usb2_transfer_setup(udev, &iface_index, f->xfer,
 132             setup, n_setup, f, f->priv_mtx);
 133         if (error == 0) {
 134
 135                 if (f->xfer[0]->nframes == 1) {
 136                         error = usb2_fifo_alloc_buffer(f,
 137                             f->xfer[0]->max_data_length, 2);
 138                 } else {
 139                         error = usb2_fifo_alloc_buffer(f,
 140                             f->xfer[0]->max_frame_size,
 141                             2 * f->xfer[0]->nframes);
 142                 }
 143                 if (error) {
 144                         usb2_transfer_unsetup(f->xfer, n_setup);
 145                 }
 146         }
 147         mtx_lock(f->priv_mtx);
 148
 149         return (error);
 150 }
 151
 152 static int
 153 ugen_open(struct usb2_fifo *f, int fflags)
 154 {
 155         struct usb2_pipe *pipe = f->priv_sc0;
 156         struct usb2_endpoint_descriptor *ed = pipe->edesc;
 157         uint8_t type;
 158
 159         DPRINTFN(6, "flag=0x%x\n", fflags);
 160
 161         mtx_lock(f->priv_mtx);
 162         switch (usb2_get_speed(f->udev)) {
 163         case USB_SPEED_LOW:
 164         case USB_SPEED_FULL:
 165                 f->nframes = UGEN_HW_FRAMES;
 166                 f->bufsize = UGEN_BULK_FS_BUFFER_SIZE;
 167                 break;
 168         default:
 169                 f->nframes = UGEN_HW_FRAMES * 8;
 170                 f->bufsize = UGEN_BULK_HS_BUFFER_SIZE;
 171                 break;
 172         }
 173
 174         type = ed->bmAttributes & UE_XFERTYPE;
 175         if (type == UE_INTERRUPT) {
 176                 f->bufsize = 0;         /* use "wMaxPacketSize" */
 177         }
 178         f->timeout = USB_NO_TIMEOUT;
 179         f->flag_short = 0;
 180         f->fifo_zlp = 0;
 181         mtx_unlock(f->priv_mtx);
 182
 183         return (0);
 184 }
 185
 186 static void
 187 ugen_close(struct usb2_fifo *f, int fflags)
 188 {
 189         DPRINTFN(6, "flag=0x%x\n", fflags);
 190
 191         /* cleanup */
 192
 193         mtx_lock(f->priv_mtx);
 194         usb2_transfer_stop(f->xfer[0]);
 195         usb2_transfer_stop(f->xfer[1]);
 196         mtx_unlock(f->priv_mtx);
 197
 198         usb2_transfer_unsetup(f->xfer, 2);
 199         usb2_fifo_free_buffer(f);
 200
 201         if (ugen_fs_uninit(f)) {
 202                 /* ignore any errors - we are closing */
 203                 DPRINTFN(6, "no FIFOs\n");
 204         }
 205 }
 206
 207 static int
 208 ugen_open_pipe_write(struct usb2_fifo *f)
 209 {
 210         struct usb2_config usb2_config[2];
 211         struct usb2_pipe *pipe = f->priv_sc0;
 212         struct usb2_endpoint_descriptor *ed = pipe->edesc;
 213
 214         mtx_assert(f->priv_mtx, MA_OWNED);
 215
 216         if (f->xfer[0] || f->xfer[1]) {
 217                 /* transfers are already opened */
 218                 return (0);
 219         }
 220         bzero(usb2_config, sizeof(usb2_config));
 221
 222         usb2_config[1].type = UE_CONTROL;
 223         usb2_config[1].endpoint = 0;
 224         usb2_config[1].direction = UE_DIR_ANY;
 225         usb2_config[1].timeout = 1000;  /* 1 second */
 226         usb2_config[1].interval = 50;/* 50 milliseconds */
 227         usb2_config[1].bufsize = sizeof(struct usb2_device_request);
 228         usb2_config[1].callback = &ugen_write_clear_stall_callback;
 229         usb2_config[1].usb_mode = USB_MODE_HOST;
 230
 231         usb2_config[0].type = ed->bmAttributes & UE_XFERTYPE;
 232         usb2_config[0].endpoint = ed->bEndpointAddress & UE_ADDR;
 233         usb2_config[0].direction = UE_DIR_TX;
 234         usb2_config[0].interval = USB_DEFAULT_INTERVAL;
 235         usb2_config[0].flags.proxy_buffer = 1;
 236         usb2_config[0].usb_mode = USB_MODE_MAX;         /* both modes */
 237
 238         switch (ed->bmAttributes & UE_XFERTYPE) {
 239         case UE_INTERRUPT:
 240         case UE_BULK:
 241                 if (f->flag_short) {
 242                         usb2_config[0].flags.force_short_xfer = 1;
 243                 }
 244                 usb2_config[0].callback = &ugen_default_write_callback;
 245                 usb2_config[0].timeout = f->timeout;
 246                 usb2_config[0].frames = 1;
 247                 usb2_config[0].bufsize = f->bufsize;
 248                 if (ugen_transfer_setup(f, usb2_config, 2)) {
 249                         return (EIO);
 250                 }
 251                 /* first transfer does not clear stall */
 252                 f->flag_stall = 0;
 253                 break;
 254
 255         case UE_ISOCHRONOUS:
 256                 usb2_config[0].flags.short_xfer_ok = 1;
 257                 usb2_config[0].bufsize = 0;     /* use default */
 258                 usb2_config[0].frames = f->nframes;
 259                 usb2_config[0].callback = &ugen_isoc_write_callback;
 260                 usb2_config[0].timeout = 0;
 261
 262                 /* clone configuration */
 263                 usb2_config[1] = usb2_config[0];
 264
 265                 if (ugen_transfer_setup(f, usb2_config, 2)) {
 266                         return (EIO);
 267                 }
 268                 break;
 269         default:
 270                 return (EINVAL);
 271         }
 272         return (0);
 273 }
 274
 275 static int
 276 ugen_open_pipe_read(struct usb2_fifo *f)
 277 {
 278         struct usb2_config usb2_config[2];
 279         struct usb2_pipe *pipe = f->priv_sc0;
 280         struct usb2_endpoint_descriptor *ed = pipe->edesc;
 281
 282         mtx_assert(f->priv_mtx, MA_OWNED);
 283
 284         if (f->xfer[0] || f->xfer[1]) {
 285                 /* transfers are already opened */
 286                 return (0);
 287         }
 288         bzero(usb2_config, sizeof(usb2_config));
 289
 290         usb2_config[1].type = UE_CONTROL;
 291         usb2_config[1].endpoint = 0;
 292         usb2_config[1].direction = UE_DIR_ANY;
 293         usb2_config[1].timeout = 1000;  /* 1 second */
 294         usb2_config[1].interval = 50;/* 50 milliseconds */
 295         usb2_config[1].bufsize = sizeof(struct usb2_device_request);
 296         usb2_config[1].callback = &ugen_read_clear_stall_callback;
 297         usb2_config[1].usb_mode = USB_MODE_HOST;
 298
 299         usb2_config[0].type = ed->bmAttributes & UE_XFERTYPE;
 300         usb2_config[0].endpoint = ed->bEndpointAddress & UE_ADDR;
 301         usb2_config[0].direction = UE_DIR_RX;
 302         usb2_config[0].interval = USB_DEFAULT_INTERVAL;
 303         usb2_config[0].flags.proxy_buffer = 1;
 304         usb2_config[0].usb_mode = USB_MODE_MAX;         /* both modes */
 305
 306         switch (ed->bmAttributes & UE_XFERTYPE) {
 307         case UE_INTERRUPT:
 308         case UE_BULK:
 309                 if (f->flag_short) {
 310                         usb2_config[0].flags.short_xfer_ok = 1;
 311                 }
 312                 usb2_config[0].timeout = f->timeout;
 313                 usb2_config[0].frames = 1;
 314                 usb2_config[0].callback = &ugen_default_read_callback;
 315                 usb2_config[0].bufsize = f->bufsize;
 316
 317                 if (ugen_transfer_setup(f, usb2_config, 2)) {
 318                         return (EIO);
 319                 }
 320                 /* first transfer does not clear stall */
 321                 f->flag_stall = 0;
 322                 break;
 323
 324         case UE_ISOCHRONOUS:
 325                 usb2_config[0].flags.short_xfer_ok = 1;
 326                 usb2_config[0].bufsize = 0;     /* use default */
 327                 usb2_config[0].frames = f->nframes;
 328                 usb2_config[0].callback = &ugen_isoc_read_callback;
 329                 usb2_config[0].timeout = 0;
 330
 331                 /* clone configuration */
 332                 usb2_config[1] = usb2_config[0];
 333
 334                 if (ugen_transfer_setup(f, usb2_config, 2)) {
 335                         return (EIO);
 336                 }
 337                 break;
 338
 339         default:
 340                 return (EINVAL);
 341         }
 342         return (0);
 343 }
 344
 345 static void
 346 ugen_start_read(struct usb2_fifo *f)
 347 {
 348         /* check that pipes are open */
 349         if (ugen_open_pipe_read(f)) {
 350                 /* signal error */
 351                 usb2_fifo_put_data_error(f);
 352         }
 353         /* start transfers */
 354         usb2_transfer_start(f->xfer[0]);
 355         usb2_transfer_start(f->xfer[1]);
 356 }
 357
 358 static void
 359 ugen_start_write(struct usb2_fifo *f)
 360 {
 361         /* check that pipes are open */
 362         if (ugen_open_pipe_write(f)) {
 363                 /* signal error */
 364                 usb2_fifo_get_data_error(f);
 365         }
 366         /* start transfers */
 367         usb2_transfer_start(f->xfer[0]);
 368         usb2_transfer_start(f->xfer[1]);
 369 }
 370
 371 static void
 372 ugen_stop_io(struct usb2_fifo *f)
 373 {
 374         /* stop transfers */
 375         usb2_transfer_stop(f->xfer[0]);
 376         usb2_transfer_stop(f->xfer[1]);
 377 }
 378
 379 static void
 380 ugen_default_read_callback(struct usb2_xfer *xfer)
 381 {
 382         struct usb2_fifo *f = xfer->priv_sc;
 383         struct usb2_mbuf *m;
 384
 385         DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
 386
 387         switch (USB_GET_STATE(xfer)) {
 388         case USB_ST_TRANSFERRED:
 389                 if (xfer->actlen == 0) {
 390                         if (f->fifo_zlp != 4) {
 391                                 f->fifo_zlp++;
 392                         } else {
 393                                 /*
 394                                  * Throttle a little bit we have multiple ZLPs
 395                                  * in a row!
 396                                  */
 397                                 xfer->interval = 64;    /* ms */
 398                         }
 399                 } else {
 400                         /* clear throttle */
 401                         xfer->interval = 0;
 402                         f->fifo_zlp = 0;
 403                 }
 404                 usb2_fifo_put_data(f, xfer->frbuffers, 0,
 405                     xfer->actlen, 1);
 406
 407         case USB_ST_SETUP:
 408                 if (f->flag_stall) {
 409                         usb2_transfer_start(f->xfer[1]);
 410                         break;
 411                 }
 412                 USB_IF_POLL(&f->free_q, m);
 413                 if (m) {
 414                         xfer->frlengths[0] = xfer->max_data_length;
 415                         usb2_start_hardware(xfer);
 416                 }
 417                 break;
 418
 419         default:                        /* Error */
 420                 if (xfer->error != USB_ERR_CANCELLED) {
 421                         /* send a zero length packet to userland */
 422                         usb2_fifo_put_data(f, xfer->frbuffers, 0, 0, 1);
 423                         f->flag_stall = 1;
 424                         f->fifo_zlp = 0;
 425                         usb2_transfer_start(f->xfer[1]);
 426                 }
 427                 break;
 428         }
 429 }
 430
 431 static void
 432 ugen_default_write_callback(struct usb2_xfer *xfer)
 433 {
 434         struct usb2_fifo *f = xfer->priv_sc;
 435         usb2_frlength_t actlen;
 436
 437         DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
 438
 439         switch (USB_GET_STATE(xfer)) {
 440         case USB_ST_SETUP:
 441         case USB_ST_TRANSFERRED:
 442                 /*
 443                  * If writing is in stall, just jump to clear stall
 444                  * callback and solve the situation.
 445                  */
 446                 if (f->flag_stall) {
 447                         usb2_transfer_start(f->xfer[1]);
 448                         break;
 449                 }
 450                 /*
 451                  * Write data, setup and perform hardware transfer.
 452                  */
 453                 if (usb2_fifo_get_data(f, xfer->frbuffers, 0,
 454                     xfer->max_data_length, &actlen, 0)) {
 455                         xfer->frlengths[0] = actlen;
 456                         usb2_start_hardware(xfer);
 457                 }
 458                 break;
 459
 460         default:                        /* Error */
 461                 if (xfer->error != USB_ERR_CANCELLED) {
 462                         f->flag_stall = 1;
 463                         usb2_transfer_start(f->xfer[1]);
 464                 }
 465                 break;
 466         }
 467 }
 468
 469 static void
 470 ugen_read_clear_stall_callback(struct usb2_xfer *xfer)
 471 {
 472         struct usb2_fifo *f = xfer->priv_sc;
 473         struct usb2_xfer *xfer_other = f->xfer[0];
 474
 475         if (f->flag_stall == 0) {
 476                 /* nothing to do */
 477                 return;
 478         }
 479         if (usb2_clear_stall_callback(xfer, xfer_other)) {
 480                 DPRINTFN(5, "f=%p: stall cleared\n", f);
 481                 f->flag_stall = 0;
 482                 usb2_transfer_start(xfer_other);
 483         }
 484 }
 485
 486 static void
 487 ugen_write_clear_stall_callback(struct usb2_xfer *xfer)
 488 {
 489         struct usb2_fifo *f = xfer->priv_sc;
 490         struct usb2_xfer *xfer_other = f->xfer[0];
 491
 492         if (f->flag_stall == 0) {
 493                 /* nothing to do */
 494                 return;
 495         }
 496         if (usb2_clear_stall_callback(xfer, xfer_other)) {
 497                 DPRINTFN(5, "f=%p: stall cleared\n", f);
 498                 f->flag_stall = 0;
 499                 usb2_transfer_start(xfer_other);
 500         }
 501 }
 502
 503 static void
 504 ugen_isoc_read_callback(struct usb2_xfer *xfer)
 505 {
 506         struct usb2_fifo *f = xfer->priv_sc;
 507         usb2_frlength_t offset;
 508         usb2_frcount_t n;
 509
 510         DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
 511
 512         switch (USB_GET_STATE(xfer)) {
 513         case USB_ST_TRANSFERRED:
 514
 515                 DPRINTFN(6, "actlen=%d\n", xfer->actlen);
 516
 517                 offset = 0;
 518
 519                 for (n = 0; n != xfer->aframes; n++) {
 520                         usb2_fifo_put_data(f, xfer->frbuffers, offset,
 521                             xfer->frlengths[n], 1);
 522                         offset += xfer->max_frame_size;
 523                 }
 524
 525         case USB_ST_SETUP:
 526 tr_setup:
 527                 for (n = 0; n != xfer->nframes; n++) {
 528                         /* setup size for next transfer */
 529                         xfer->frlengths[n] = xfer->max_frame_size;
 530                 }
 531                 usb2_start_hardware(xfer);
 532                 break;
 533
 534         default:                        /* Error */
 535                 if (xfer->error == USB_ERR_CANCELLED) {
 536                         break;
 537                 }
 538                 goto tr_setup;
 539         }
 540 }
 541
 542 static void
 543 ugen_isoc_write_callback(struct usb2_xfer *xfer)
 544 {
 545         struct usb2_fifo *f = xfer->priv_sc;
 546         usb2_frlength_t actlen;
 547         usb2_frlength_t offset;
 548         usb2_frcount_t n;
 549
 550         DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
 551
 552         switch (USB_GET_STATE(xfer)) {
 553         case USB_ST_TRANSFERRED:
 554         case USB_ST_SETUP:
 555 tr_setup:
 556                 offset = 0;
 557                 for (n = 0; n != xfer->nframes; n++) {
 558                         if (usb2_fifo_get_data(f, xfer->frbuffers, offset,
 559                             xfer->max_frame_size, &actlen, 1)) {
 560                                 xfer->frlengths[n] = actlen;
 561                                 offset += actlen;
 562                         } else {
 563                                 break;
 564                         }
 565                 }
 566
 567                 for (; n != xfer->nframes; n++) {
 568                         /* fill in zero frames */
 569                         xfer->frlengths[n] = 0;
 570                 }
 571                 usb2_start_hardware(xfer);
 572                 break;
 573
 574         default:                        /* Error */
 575                 if (xfer->error == USB_ERR_CANCELLED) {
 576                         break;
 577                 }
 578                 goto tr_setup;
 579         }
 580 }
 581
 582 static int
 583 ugen_set_config(struct usb2_fifo *f, uint8_t index)
 584 {
 585         DPRINTFN(2, "index %u\n", index);
 586
 587         if (f->udev->flags.usb2_mode != USB_MODE_HOST) {
 588                 /* not possible in device side mode */
 589                 return (ENOTTY);
 590         }
 591         if (f->udev->curr_config_index == index) {
 592                 /* no change needed */
 593                 return (0);
 594         }
 595         /* make sure all FIFO's are gone */
 596         /* else there can be a deadlock */
 597         if (ugen_fs_uninit(f)) {
 598                 /* ignore any errors */
 599                 DPRINTFN(6, "no FIFOs\n");
 600         }
 601         /* change setting - will free generic FIFOs, if any */
 602         if (usb2_set_config_index(f->udev, index)) {
 603                 return (EIO);
 604         }
 605         /* probe and attach */
 606         if (usb2_probe_and_attach(f->udev, USB_IFACE_INDEX_ANY)) {
 607                 return (EIO);
 608         }
 609         return (0);
 610 }
 611
 612 static int
 613 ugen_set_interface(struct usb2_fifo *f,
 614     uint8_t iface_index, uint8_t alt_index)
 615 {
 616         DPRINTFN(2, "%u, %u\n", iface_index, alt_index);
 617
 618         if (f->udev->flags.usb2_mode != USB_MODE_HOST) {
 619                 /* not possible in device side mode */
 620                 return (ENOTTY);
 621         }
 622         /* make sure all FIFO's are gone */
 623         /* else there can be a deadlock */
 624         if (ugen_fs_uninit(f)) {
 625                 /* ignore any errors */
 626                 DPRINTFN(6, "no FIFOs\n");
 627         }
 628         /* change setting - will free generic FIFOs, if any */
 629         if (usb2_set_alt_interface_index(f->udev, iface_index, alt_index)) {
 630                 return (EIO);
 631         }
 632         /* probe and attach */
 633         if (usb2_probe_and_attach(f->udev, iface_index)) {
 634                 return (EIO);
 635         }
 636         return (0);
 637 }
 638
 639 /*------------------------------------------------------------------------*
 640  *      ugen_get_cdesc
 641  *
 642  * This function will retrieve the complete configuration descriptor
 643  * at the given index.
 644  *------------------------------------------------------------------------*/
 645 static int
 646 ugen_get_cdesc(struct usb2_fifo *f, struct usb2_gen_descriptor *ugd)
 647 {
 648         struct usb2_config_descriptor *cdesc;
 649         struct usb2_device *udev = f->udev;
 650         int error;
 651         uint16_t len;
 652         uint8_t free_data;
 653
 654         DPRINTFN(6, "\n");
 655
 656         if (ugd->ugd_data == NULL) {
 657                 /* userland pointer should not be zero */
 658                 return (EINVAL);
 659         }
 660         if ((ugd->ugd_config_index == USB_UNCONFIG_INDEX) ||
 661             (ugd->ugd_config_index == udev->curr_config_index)) {
 662                 cdesc = usb2_get_config_descriptor(udev);
 663                 if (cdesc == NULL) {
 664                         return (ENXIO);
 665                 }
 666                 free_data = 0;
 667
 668         } else {
 669                 if (usb2_req_get_config_desc_full(udev,
 670                     NULL, &cdesc, M_USBDEV,
 671                     ugd->ugd_config_index)) {
 672                         return (ENXIO);
 673                 }
 674                 free_data = 1;
 675         }
 676
 677         len = UGETW(cdesc->wTotalLength);
 678         if (len > ugd->ugd_maxlen) {
 679                 len = ugd->ugd_maxlen;
 680         }
 681         DPRINTFN(6, "len=%u\n", len);
 682
 683         ugd->ugd_actlen = len;
 684         ugd->ugd_offset = 0;
 685
 686         error = copyout(cdesc, ugd->ugd_data, len);
 687
 688         if (free_data) {
 689                 free(cdesc, M_USBDEV);
 690         }
 691         return (error);
 692 }
 693
 694 static int
 695 ugen_get_sdesc(struct usb2_fifo *f, struct usb2_gen_descriptor *ugd)
 696 {
 697         void *ptr = f->udev->bus->scratch[0].data;
 698         uint16_t size = sizeof(f->udev->bus->scratch[0].data);
 699         int error;
 700
 701         if (usb2_req_get_string_desc(f->udev, NULL, ptr,
 702             size, ugd->ugd_lang_id, ugd->ugd_string_index)) {
 703                 error = EINVAL;
 704         } else {
 705
 706                 if (size > ((uint8_t *)ptr)[0]) {
 707                         size = ((uint8_t *)ptr)[0];
 708                 }
 709                 if (size > ugd->ugd_maxlen) {
 710                         size = ugd->ugd_maxlen;
 711                 }
 712                 ugd->ugd_actlen = size;
 713                 ugd->ugd_offset = 0;
 714
 715                 error = copyout(ptr, ugd->ugd_data, size);
 716         }
 717         return (error);
 718 }
 719
 720 /*------------------------------------------------------------------------*
 721  *      ugen_get_iface_driver
 722  *
 723  * This function generates an USB interface description for userland.
 724  *
 725  * Returns:
 726  *    0: Success
 727  * Else: Failure
 728  *------------------------------------------------------------------------*/
 729 static int
 730 ugen_get_iface_driver(struct usb2_fifo *f, struct usb2_gen_descriptor *ugd)
 731 {
 732         struct usb2_device *udev = f->udev;
 733         struct usb2_interface *iface;
 734         const char *ptr;
 735         const char *desc;
 736         unsigned int len;
 737         unsigned int maxlen;
 738         char buf[128];
 739         int error;
 740
 741         DPRINTFN(6, "\n");
 742
 743         if ((ugd->ugd_data == NULL) || (ugd->ugd_maxlen == 0)) {
 744                 /* userland pointer should not be zero */
 745                 return (EINVAL);
 746         }
 747
 748         iface = usb2_get_iface(udev, ugd->ugd_iface_index);
 749         if ((iface == NULL) || (iface->idesc == NULL)) {
 750                 /* invalid interface index */
 751                 return (EINVAL);
 752         }
 753
 754         /* read out device nameunit string, if any */
 755         if ((iface->subdev != NULL) &&
 756             device_is_attached(iface->subdev) &&
 757             (ptr = device_get_nameunit(iface->subdev)) &&
 758             (desc = device_get_desc(iface->subdev))) {
 759
 760                 /* print description */
 761                 snprintf(buf, sizeof(buf), "%s: <%s>", ptr, desc);
 762
 763                 /* range checks */
 764                 maxlen = ugd->ugd_maxlen - 1;
 765                 len = strlen(buf);
 766                 if (len > maxlen)
 767                         len = maxlen;
 768
 769                 /* update actual length, including terminating zero */
 770                 ugd->ugd_actlen = len + 1;
 771
 772                 /* copy out interface description */
 773                 error = copyout(buf, ugd->ugd_data, ugd->ugd_actlen);
 774         } else {
 775                 /* zero length string is default */
 776                 error = copyout("", ugd->ugd_data, 1);
 777         }
 778         return (error);
 779 }
 780
 781 /*------------------------------------------------------------------------*
 782  *      usb2_gen_fill_deviceinfo
 783  *
 784  * This function dumps information about an USB device to the
 785  * structure pointed to by the "di" argument.
 786  *
 787  * Returns:
 788  *    0: Success
 789  * Else: Failure
 790  *------------------------------------------------------------------------*/
 791 static int
 792 usb2_gen_fill_deviceinfo(struct usb2_fifo *f, struct usb2_device_info *di)
 793 {
 794         struct usb2_device *udev;
 795         struct usb2_device *hub;
 796
 797         udev = f->udev;
 798
 799         bzero(di, sizeof(di[0]));
 800
 801         di->udi_bus = device_get_unit(udev->bus->bdev);
 802         di->udi_addr = udev->address;
 803         di->udi_index = udev->device_index;
 804 #if USB_HAVE_STRINGS
 805         strlcpy(di->udi_serial, udev->serial,
 806             sizeof(di->udi_serial));
 807         strlcpy(di->udi_vendor, udev->manufacturer,
 808             sizeof(di->udi_vendor));
 809         strlcpy(di->udi_product, udev->product,
 810             sizeof(di->udi_product));
 811 #endif
 812         usb2_printBCD(di->udi_release, sizeof(di->udi_release),
 813             UGETW(udev->ddesc.bcdDevice));
 814         di->udi_vendorNo = UGETW(udev->ddesc.idVendor);
 815         di->udi_productNo = UGETW(udev->ddesc.idProduct);
 816         di->udi_releaseNo = UGETW(udev->ddesc.bcdDevice);
 817         di->udi_class = udev->ddesc.bDeviceClass;
 818         di->udi_subclass = udev->ddesc.bDeviceSubClass;
 819         di->udi_protocol = udev->ddesc.bDeviceProtocol;
 820         di->udi_config_no = udev->curr_config_no;
 821         di->udi_config_index = udev->curr_config_index;
 822         di->udi_power = udev->flags.self_powered ? 0 : udev->power;
 823         di->udi_speed = udev->speed;
 824         di->udi_mode = udev->flags.usb2_mode;
 825         di->udi_power_mode = udev->power_mode;
 826         di->udi_suspended = udev->flags.peer_suspended;
 827
 828         hub = udev->parent_hub;
 829         if (hub) {
 830                 di->udi_hubaddr = hub->address;
 831                 di->udi_hubindex = hub->device_index;
 832                 di->udi_hubport = udev->port_no;
 833         }
 834         return (0);
 835 }
 836
 837 /*------------------------------------------------------------------------*
 838  *      ugen_check_request
 839  *
 840  * Return values:
 841  * 0: Access allowed
 842  * Else: No access
 843  *------------------------------------------------------------------------*/
 844 static int
 845 ugen_check_request(struct usb2_device *udev, struct usb2_device_request *req)
 846 {
 847         struct usb2_pipe *pipe;
 848         int error;
 849
 850         /*
 851          * Avoid requests that would damage the bus integrity:
 852          */
 853         if (((req->bmRequestType == UT_WRITE_DEVICE) &&
 854             (req->bRequest == UR_SET_ADDRESS)) ||
 855             ((req->bmRequestType == UT_WRITE_DEVICE) &&
 856             (req->bRequest == UR_SET_CONFIG)) ||
 857             ((req->bmRequestType == UT_WRITE_INTERFACE) &&
 858             (req->bRequest == UR_SET_INTERFACE))) {
 859                 /*
 860                  * These requests can be useful for testing USB drivers.
 861                  */
 862                 error = priv_check(curthread, PRIV_DRIVER);
 863                 if (error) {
 864                         return (error);
 865                 }
 866         }
 867         /*
 868          * Special case - handle clearing of stall
 869          */
 870         if (req->bmRequestType == UT_WRITE_ENDPOINT) {
 871
 872                 pipe = usb2_get_pipe_by_addr(udev, req->wIndex[0]);
 873                 if (pipe == NULL) {
 874                         return (EINVAL);
 875                 }
 876                 if ((req->bRequest == UR_CLEAR_FEATURE) &&
 877                     (UGETW(req->wValue) == UF_ENDPOINT_HALT)) {
 878                         usb2_clear_data_toggle(udev, pipe);
 879                 }
 880         }
 881         /* TODO: add more checks to verify the interface index */
 882
 883         return (0);
 884 }
 885
 886 int
 887 ugen_do_request(struct usb2_fifo *f, struct usb2_ctl_request *ur)
 888 {
 889         int error;
 890         uint16_t len;
 891         uint16_t actlen;
 892
 893         if (ugen_check_request(f->udev, &ur->ucr_request)) {
 894                 return (EPERM);
 895         }
 896         len = UGETW(ur->ucr_request.wLength);
 897
 898         /* check if "ucr_data" is valid */
 899         if (len != 0) {
 900                 if (ur->ucr_data == NULL) {
 901                         return (EFAULT);
 902                 }
 903         }
 904         /* do the USB request */
 905         error = usb2_do_request_flags
 906             (f->udev, NULL, &ur->ucr_request, ur->ucr_data,
 907             (ur->ucr_flags & USB_SHORT_XFER_OK) |
 908             USB_USER_DATA_PTR, &actlen,
 909             USB_DEFAULT_TIMEOUT);
 910
 911         ur->ucr_actlen = actlen;
 912
 913         if (error) {
 914                 error = EIO;
 915         }
 916         return (error);
 917 }
 918
 919 /*------------------------------------------------------------------------
 920  *      ugen_re_enumerate
 921  *------------------------------------------------------------------------*/
 922 static int
 923 ugen_re_enumerate(struct usb2_fifo *f)
 924 {
 925         struct usb2_device *udev = f->udev;
 926         int error;
 927
 928         /*
 929          * This request can be useful for testing USB drivers:
 930          */
 931         error = priv_check(curthread, PRIV_DRIVER);
 932         if (error) {
 933                 return (error);
 934         }
 935         /* get the device unconfigured */
 936         error = ugen_set_config(f, USB_UNCONFIG_INDEX);
 937         if (error) {
 938                 return (error);
 939         }
 940         /* do a bus-reset */
 941         mtx_lock(f->priv_mtx);
 942         error = usb2_req_re_enumerate(udev, f->priv_mtx);
 943         mtx_unlock(f->priv_mtx);
 944
 945         if (error) {
 946                 return (ENXIO);
 947         }
 948         /* restore configuration to index 0 */
 949         error = ugen_set_config(f, 0);
 950         if (error) {
 951                 return (error);
 952         }
 953         return (0);
 954 }
 955
 956 int
 957 ugen_fs_uninit(struct usb2_fifo *f)
 958 {
 959         if (f->fs_xfer == NULL) {
 960                 return (EINVAL);
 961         }
 962         usb2_transfer_unsetup(f->fs_xfer, f->fs_ep_max);
 963         free(f->fs_xfer, M_USB);
 964         f->fs_xfer = NULL;
 965         f->fs_ep_max = 0;
 966         f->fs_ep_ptr = NULL;
 967         f->flag_iscomplete = 0;
 968         usb2_fifo_free_buffer(f);
 969         return (0);
 970 }
 971
 972 static uint8_t
 973 ugen_fs_get_complete(struct usb2_fifo *f, uint8_t *pindex)
 974 {
 975         struct usb2_mbuf *m;
 976
 977         USB_IF_DEQUEUE(&f->used_q, m);
 978
 979         if (m) {
 980                 *pindex = *((uint8_t *)(m->cur_data_ptr));
 981
 982                 USB_IF_ENQUEUE(&f->free_q, m);
 983
 984                 return (0);             /* success */
 985         } else {
 986
 987                 *pindex = 0;            /* fix compiler warning */
 988
 989                 f->flag_iscomplete = 0;
 990         }
 991         return (1);                     /* failure */
 992 }
 993
 994 static void
 995 ugen_fs_set_complete(struct usb2_fifo *f, uint8_t index)
 996 {
 997         struct usb2_mbuf *m;
 998
 999         USB_IF_DEQUEUE(&f->free_q, m);
1000
1001         if (m == NULL) {
1002                 /* can happen during close */
1003                 DPRINTF("out of buffers\n");
1004                 return;
1005         }
1006         USB_MBUF_RESET(m);
1007
1008         *((uint8_t *)(m->cur_data_ptr)) = index;
1009
1010         USB_IF_ENQUEUE(&f->used_q, m);
1011
1012         f->flag_iscomplete = 1;
1013
1014         usb2_fifo_wakeup(f);
1015 }
1016
1017 static int
1018 ugen_fs_copy_in(struct usb2_fifo *f, uint8_t ep_index)
1019 {
1020         struct usb2_device_request *req;
1021         struct usb2_xfer *xfer;
1022         struct usb2_fs_endpoint fs_ep;
1023         void *uaddr;                    /* userland pointer */
1024         void *kaddr;
1025         usb2_frlength_t offset;
1026         usb2_frlength_t rem;
1027         usb2_frcount_t n;
1028         uint32_t length;
1029         int error;
1030         uint8_t isread;
1031
1032         if (ep_index >= f->fs_ep_max) {
1033                 return (EINVAL);
1034         }
1035         xfer = f->fs_xfer[ep_index];
1036         if (xfer == NULL) {
1037                 return (EINVAL);
1038         }
1039         mtx_lock(f->priv_mtx);
1040         if (usb2_transfer_pending(xfer)) {
1041                 mtx_unlock(f->priv_mtx);
1042                 return (EBUSY);         /* should not happen */
1043         }
1044         mtx_unlock(f->priv_mtx);
1045
1046         error = copyin(f->fs_ep_ptr +
1047             ep_index, &fs_ep, sizeof(fs_ep));
1048         if (error) {
1049                 return (error);
1050         }
1051         /* security checks */
1052
1053         if (fs_ep.nFrames > xfer->max_frame_count) {
1054                 xfer->error = USB_ERR_INVAL;
1055                 goto complete;
1056         }
1057         if (fs_ep.nFrames == 0) {
1058                 xfer->error = USB_ERR_INVAL;
1059                 goto complete;
1060         }
1061         error = copyin(fs_ep.ppBuffer,
1062             &uaddr, sizeof(uaddr));
1063         if (error) {
1064                 return (error);
1065         }
1066         /* reset first frame */
1067         usb2_set_frame_offset(xfer, 0, 0);
1068
1069         if (xfer->flags_int.control_xfr) {
1070
1071                 req = xfer->frbuffers[0].buffer;
1072
1073                 error = copyin(fs_ep.pLength,
1074                     &length, sizeof(length));
1075                 if (error) {
1076                         return (error);
1077                 }
1078                 if (length >= sizeof(*req)) {
1079                         xfer->error = USB_ERR_INVAL;
1080                         goto complete;
1081                 }
1082                 if (length != 0) {
1083                         error = copyin(uaddr, req, length);
1084                         if (error) {
1085                                 return (error);
1086                         }
1087                 }
1088                 if (ugen_check_request(f->udev, req)) {
1089                         xfer->error = USB_ERR_INVAL;
1090                         goto complete;
1091                 }
1092                 xfer->frlengths[0] = length;
1093
1094                 /* Host mode only ! */
1095                 if ((req->bmRequestType &
1096                     (UT_READ | UT_WRITE)) == UT_READ) {
1097                         isread = 1;
1098                 } else {
1099                         isread = 0;
1100                 }
1101                 n = 1;
1102                 offset = sizeof(*req);
1103
1104         } else {
1105                 /* Device and Host mode */
1106                 if (USB_GET_DATA_ISREAD(xfer)) {
1107                         isread = 1;
1108                 } else {
1109                         isread = 0;
1110                 }
1111                 n = 0;
1112                 offset = 0;
1113         }
1114
1115         rem = xfer->max_data_length;
1116         xfer->nframes = fs_ep.nFrames;
1117         xfer->timeout = fs_ep.timeout;
1118         if (xfer->timeout > 65535) {
1119                 xfer->timeout = 65535;
1120         }
1121         if (fs_ep.flags & USB_FS_FLAG_SINGLE_SHORT_OK)
1122                 xfer->flags.short_xfer_ok = 1;
1123         else
1124                 xfer->flags.short_xfer_ok = 0;
1125
1126         if (fs_ep.flags & USB_FS_FLAG_MULTI_SHORT_OK)
1127                 xfer->flags.short_frames_ok = 1;
1128         else
1129                 xfer->flags.short_frames_ok = 0;
1130
1131         if (fs_ep.flags & USB_FS_FLAG_FORCE_SHORT)
1132                 xfer->flags.force_short_xfer = 1;
1133         else
1134                 xfer->flags.force_short_xfer = 0;
1135
1136         if (fs_ep.flags & USB_FS_FLAG_CLEAR_STALL)
1137                 xfer->flags.stall_pipe = 1;
1138         else
1139                 xfer->flags.stall_pipe = 0;
1140
1141         for (; n != xfer->nframes; n++) {
1142
1143                 error = copyin(fs_ep.pLength + n,
1144                     &length, sizeof(length));
1145                 if (error) {
1146                         break;
1147                 }
1148                 xfer->frlengths[n] = length;
1149
1150                 if (length > rem) {
1151                         xfer->error = USB_ERR_INVAL;
1152                         goto complete;
1153                 }
1154                 rem -= length;
1155
1156                 if (!isread) {
1157
1158                         /* we need to know the source buffer */
1159                         error = copyin(fs_ep.ppBuffer + n,
1160                             &uaddr, sizeof(uaddr));
1161                         if (error) {
1162                                 break;
1163                         }
1164                         if (xfer->flags_int.isochronous_xfr) {
1165                                 /* get kernel buffer address */
1166                                 kaddr = xfer->frbuffers[0].buffer;
1167                                 kaddr = USB_ADD_BYTES(kaddr, offset);
1168                         } else {
1169                                 /* set current frame offset */
1170                                 usb2_set_frame_offset(xfer, offset, n);
1171
1172                                 /* get kernel buffer address */
1173                                 kaddr = xfer->frbuffers[n].buffer;
1174                         }
1175
1176                         /* move data */
1177                         error = copyin(uaddr, kaddr, length);
1178                         if (error) {
1179                                 break;
1180                         }
1181                 }
1182                 offset += length;
1183         }
1184         return (error);
1185
1186 complete:
1187         mtx_lock(f->priv_mtx);
1188         ugen_fs_set_complete(f, ep_index);
1189         mtx_unlock(f->priv_mtx);
1190         return (0);
1191 }
1192
1193 static int
1194 ugen_fs_copy_out(struct usb2_fifo *f, uint8_t ep_index)
1195 {
1196         struct usb2_device_request *req;
1197         struct usb2_xfer *xfer;
1198         struct usb2_fs_endpoint fs_ep;
1199         struct usb2_fs_endpoint *fs_ep_uptr;    /* userland ptr */
1200         void *uaddr;                    /* userland ptr */
1201         void *kaddr;
1202         usb2_frlength_t offset;
1203         usb2_frlength_t rem;
1204         usb2_frcount_t n;
1205         uint32_t length;
1206         uint32_t temp;
1207         int error;
1208         uint8_t isread;
1209
1210         if (ep_index >= f->fs_ep_max)
1211                 return (EINVAL);
1212
1213         xfer = f->fs_xfer[ep_index];
1214         if (xfer == NULL)
1215                 return (EINVAL);
1216
1217         mtx_lock(f->priv_mtx);
1218         if (usb2_transfer_pending(xfer)) {
1219                 mtx_unlock(f->priv_mtx);
1220                 return (EBUSY);         /* should not happen */
1221         }
1222         mtx_unlock(f->priv_mtx);
1223
1224         fs_ep_uptr = f->fs_ep_ptr + ep_index;
1225         error = copyin(fs_ep_uptr, &fs_ep, sizeof(fs_ep));
1226         if (error) {
1227                 return (error);
1228         }
1229         fs_ep.status = xfer->error;
1230         fs_ep.aFrames = xfer->aframes;
1231         fs_ep.isoc_time_complete = xfer->isoc_time_complete;
1232         if (xfer->error) {
1233                 goto complete;
1234         }
1235         if (xfer->flags_int.control_xfr) {
1236                 req = xfer->frbuffers[0].buffer;
1237
1238                 /* Host mode only ! */
1239                 if ((req->bmRequestType & (UT_READ | UT_WRITE)) == UT_READ) {
1240                         isread = 1;
1241                 } else {
1242                         isread = 0;
1243                 }
1244                 if (xfer->nframes == 0)
1245                         n = 0;          /* should never happen */
1246                 else
1247                         n = 1;
1248         } else {
1249                 /* Device and Host mode */
1250                 if (USB_GET_DATA_ISREAD(xfer)) {
1251                         isread = 1;
1252                 } else {
1253                         isread = 0;
1254                 }
1255                 n = 0;
1256         }
1257
1258         /* Update lengths and copy out data */
1259
1260         rem = xfer->max_data_length;
1261         offset = 0;
1262
1263         for (; n != xfer->nframes; n++) {
1264
1265                 /* get initial length into "temp" */
1266                 error = copyin(fs_ep.pLength + n,
1267                     &temp, sizeof(temp));
1268                 if (error) {
1269                         return (error);
1270                 }
1271                 if (temp > rem) {
1272                         /* the userland length has been corrupted */
1273                         DPRINTF("corrupt userland length "
1274                             "%u > %u\n", temp, rem);
1275                         fs_ep.status = USB_ERR_INVAL;
1276                         goto complete;
1277                 }
1278                 rem -= temp;
1279
1280                 /* get actual transfer length */
1281                 length = xfer->frlengths[n];
1282                 if (length > temp) {
1283                         /* data overflow */
1284                         fs_ep.status = USB_ERR_INVAL;
1285                         DPRINTF("data overflow %u > %u\n",
1286                             length, temp);
1287                         goto complete;
1288                 }
1289                 if (isread) {
1290
1291                         /* we need to know the destination buffer */
1292                         error = copyin(fs_ep.ppBuffer + n,
1293                             &uaddr, sizeof(uaddr));
1294                         if (error) {
1295                                 return (error);
1296                         }
1297                         if (xfer->flags_int.isochronous_xfr) {
1298                                 /* only one frame buffer */
1299                                 kaddr = USB_ADD_BYTES(
1300                                     xfer->frbuffers[0].buffer, offset);
1301                         } else {
1302                                 /* multiple frame buffers */
1303                                 kaddr = xfer->frbuffers[n].buffer;
1304                         }
1305
1306                         /* move data */
1307                         error = copyout(kaddr, uaddr, length);
1308                         if (error) {
1309                                 return (error);
1310                         }
1311                 }
1312                 /*
1313                  * Update offset according to initial length, which is
1314                  * needed by isochronous transfers!
1315                  */
1316                 offset += temp;
1317
1318                 /* update length */
1319                 error = copyout(&length,
1320                     fs_ep.pLength + n, sizeof(length));
1321                 if (error) {
1322                         return (error);
1323                 }
1324         }
1325
1326 complete:
1327         /* update "aFrames" */
1328         error = copyout(&fs_ep.aFrames, &fs_ep_uptr->aFrames,
1329             sizeof(fs_ep.aFrames));
1330         if (error)
1331                 goto done;
1332
1333         /* update "isoc_time_complete" */
1334         error = copyout(&fs_ep.isoc_time_complete,
1335             &fs_ep_uptr->isoc_time_complete,
1336             sizeof(fs_ep.isoc_time_complete));
1337         if (error)
1338                 goto done;
1339         /* update "status" */
1340         error = copyout(&fs_ep.status, &fs_ep_uptr->status,
1341             sizeof(fs_ep.status));
1342 done:
1343         return (error);
1344 }
1345
1346 static uint8_t
1347 ugen_fifo_in_use(struct usb2_fifo *f, int fflags)
1348 {
1349         struct usb2_fifo *f_rx;
1350         struct usb2_fifo *f_tx;
1351
1352         f_rx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_RX];
1353         f_tx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_TX];
1354
1355         if ((fflags & FREAD) && f_rx &&
1356             (f_rx->xfer[0] || f_rx->xfer[1])) {
1357                 return (1);             /* RX FIFO in use */
1358         }
1359         if ((fflags & FWRITE) && f_tx &&
1360             (f_tx->xfer[0] || f_tx->xfer[1])) {
1361                 return (1);             /* TX FIFO in use */
1362         }
1363         return (0);                     /* not in use */
1364 }
1365
1366 static int
1367 ugen_ioctl(struct usb2_fifo *f, u_long cmd, void *addr, int fflags)
1368 {
1369         struct usb2_config usb2_config[1];
1370         struct usb2_device_request req;
1371         union {
1372                 struct usb2_fs_complete *pcomp;
1373                 struct usb2_fs_start *pstart;
1374                 struct usb2_fs_stop *pstop;
1375                 struct usb2_fs_open *popen;
1376                 struct usb2_fs_close *pclose;
1377                 struct usb2_fs_clear_stall_sync *pstall;
1378                 void   *addr;
1379         }     u;
1380         struct usb2_pipe *pipe;
1381         struct usb2_endpoint_descriptor *ed;
1382         int error = 0;
1383         uint8_t iface_index;
1384         uint8_t isread;
1385         uint8_t ep_index;
1386
1387         u.addr = addr;
1388
1389         DPRINTFN(6, "cmd=0x%08lx\n", cmd);
1390
1391         switch (cmd) {
1392         case USB_FS_COMPLETE:
1393                 mtx_lock(f->priv_mtx);
1394                 error = ugen_fs_get_complete(f, &ep_index);
1395                 mtx_unlock(f->priv_mtx);
1396
1397                 if (error) {
1398                         error = EBUSY;
1399                         break;
1400                 }
1401                 u.pcomp->ep_index = ep_index;
1402                 error = ugen_fs_copy_out(f, u.pcomp->ep_index);
1403                 break;
1404
1405         case USB_FS_START:
1406                 error = ugen_fs_copy_in(f, u.pstart->ep_index);
1407                 if (error) {
1408                         break;
1409                 }
1410                 mtx_lock(f->priv_mtx);
1411                 usb2_transfer_start(f->fs_xfer[u.pstart->ep_index]);
1412                 mtx_unlock(f->priv_mtx);
1413                 break;
1414
1415         case USB_FS_STOP:
1416                 if (u.pstop->ep_index >= f->fs_ep_max) {
1417                         error = EINVAL;
1418                         break;
1419                 }
1420                 mtx_lock(f->priv_mtx);
1421                 usb2_transfer_stop(f->fs_xfer[u.pstop->ep_index]);
1422                 mtx_unlock(f->priv_mtx);
1423                 break;
1424
1425         case USB_FS_OPEN:
1426                 if (u.popen->ep_index >= f->fs_ep_max) {
1427                         error = EINVAL;
1428                         break;
1429                 }
1430                 if (f->fs_xfer[u.popen->ep_index] != NULL) {
1431                         error = EBUSY;
1432                         break;
1433                 }
1434                 if (u.popen->max_bufsize > USB_FS_MAX_BUFSIZE) {
1435                         u.popen->max_bufsize = USB_FS_MAX_BUFSIZE;
1436                 }
1437                 if (u.popen->max_frames > USB_FS_MAX_FRAMES) {
1438                         u.popen->max_frames = USB_FS_MAX_FRAMES;
1439                         break;
1440                 }
1441                 if (u.popen->max_frames == 0) {
1442                         error = EINVAL;
1443                         break;
1444                 }
1445                 pipe = usb2_get_pipe_by_addr(f->udev, u.popen->ep_no);
1446                 if (pipe == NULL) {
1447                         error = EINVAL;
1448                         break;
1449                 }
1450                 ed = pipe->edesc;
1451                 if (ed == NULL) {
1452                         error = ENXIO;
1453                         break;
1454                 }
1455                 iface_index = pipe->iface_index;
1456
1457                 bzero(usb2_config, sizeof(usb2_config));
1458
1459                 usb2_config[0].type = ed->bmAttributes & UE_XFERTYPE;
1460                 usb2_config[0].endpoint = ed->bEndpointAddress & UE_ADDR;
1461                 usb2_config[0].direction = ed->bEndpointAddress & (UE_DIR_OUT | UE_DIR_IN);
1462                 usb2_config[0].interval = USB_DEFAULT_INTERVAL;
1463                 usb2_config[0].flags.proxy_buffer = 1;
1464                 usb2_config[0].callback = &ugen_default_fs_callback;
1465                 usb2_config[0].timeout = 0;     /* no timeout */
1466                 usb2_config[0].frames = u.popen->max_frames;
1467                 usb2_config[0].bufsize = u.popen->max_bufsize;
1468                 usb2_config[0].usb_mode = USB_MODE_MAX;         /* both modes */
1469
1470                 if (usb2_config[0].type == UE_CONTROL) {
1471                         if (f->udev->flags.usb2_mode != USB_MODE_HOST) {
1472                                 error = EINVAL;
1473                                 break;
1474                         }
1475                 } else {
1476
1477                         isread = ((usb2_config[0].endpoint &
1478                             (UE_DIR_IN | UE_DIR_OUT)) == UE_DIR_IN);
1479
1480                         if (f->udev->flags.usb2_mode != USB_MODE_HOST) {
1481                                 isread = !isread;
1482                         }
1483                         /* check permissions */
1484                         if (isread) {
1485                                 if (!(fflags & FREAD)) {
1486                                         error = EPERM;
1487                                         break;
1488                                 }
1489                         } else {
1490                                 if (!(fflags & FWRITE)) {
1491                                         error = EPERM;
1492                                         break;
1493                                 }
1494                         }
1495                 }
1496                 error = usb2_transfer_setup(f->udev, &iface_index,
1497                     f->fs_xfer + u.popen->ep_index, usb2_config, 1,
1498                     f, f->priv_mtx);
1499                 if (error == 0) {
1500                         /* update maximums */
1501                         u.popen->max_packet_length =
1502                             f->fs_xfer[u.popen->ep_index]->max_frame_size;
1503                         u.popen->max_bufsize =
1504                             f->fs_xfer[u.popen->ep_index]->max_data_length;
1505                         f->fs_xfer[u.popen->ep_index]->priv_fifo =
1506                             ((uint8_t *)0) + u.popen->ep_index;
1507                 } else {
1508                         error = ENOMEM;
1509                 }
1510                 break;
1511
1512         case USB_FS_CLOSE:
1513                 if (u.pclose->ep_index >= f->fs_ep_max) {
1514                         error = EINVAL;
1515                         break;
1516                 }
1517                 if (f->fs_xfer[u.pclose->ep_index] == NULL) {
1518                         error = EINVAL;
1519                         break;
1520                 }
1521                 usb2_transfer_unsetup(f->fs_xfer + u.pclose->ep_index, 1);
1522                 break;
1523
1524         case USB_FS_CLEAR_STALL_SYNC:
1525                 if (u.pstall->ep_index >= f->fs_ep_max) {
1526                         error = EINVAL;
1527                         break;
1528                 }
1529                 if (f->fs_xfer[u.pstall->ep_index] == NULL) {
1530                         error = EINVAL;
1531                         break;
1532                 }
1533                 if (f->udev->flags.usb2_mode != USB_MODE_HOST) {
1534                         error = EINVAL;
1535                         break;
1536                 }
1537                 mtx_lock(f->priv_mtx);
1538                 error = usb2_transfer_pending(f->fs_xfer[u.pstall->ep_index]);
1539                 mtx_unlock(f->priv_mtx);
1540
1541                 if (error) {
1542                         return (EBUSY);
1543                 }
1544                 pipe = f->fs_xfer[u.pstall->ep_index]->pipe;
1545
1546                 /* setup a clear-stall packet */
1547                 req.bmRequestType = UT_WRITE_ENDPOINT;
1548                 req.bRequest = UR_CLEAR_FEATURE;
1549                 USETW(req.wValue, UF_ENDPOINT_HALT);
1550                 req.wIndex[0] = pipe->edesc->bEndpointAddress;
1551                 req.wIndex[1] = 0;
1552                 USETW(req.wLength, 0);
1553
1554                 error = usb2_do_request(f->udev, NULL, &req, NULL);
1555                 if (error == 0) {
1556                         usb2_clear_data_toggle(f->udev, pipe);
1557                 } else {
1558                         error = ENXIO;
1559                 }
1560                 break;
1561
1562         default:
1563                 error = ENOIOCTL;
1564                 break;
1565         }
1566
1567         DPRINTFN(6, "error=%d\n", error);
1568
1569         return (error);
1570 }
1571
1572 static int
1573 ugen_set_short_xfer(struct usb2_fifo *f, void *addr)
1574 {
1575         uint8_t t;
1576
1577         if (*(int *)addr)
1578                 t = 1;
1579         else
1580                 t = 0;
1581
1582         if (f->flag_short == t) {
1583                 /* same value like before - accept */
1584                 return (0);
1585         }
1586         if (f->xfer[0] || f->xfer[1]) {
1587                 /* cannot change this during transfer */
1588                 return (EBUSY);
1589         }
1590         f->flag_short = t;
1591         return (0);
1592 }
1593
1594 static int
1595 ugen_set_timeout(struct usb2_fifo *f, void *addr)
1596 {
1597         f->timeout = *(int *)addr;
1598         if (f->timeout > 65535) {
1599                 /* limit user input */
1600                 f->timeout = 65535;
1601         }
1602         return (0);
1603 }
1604
1605 static int
1606 ugen_get_frame_size(struct usb2_fifo *f, void *addr)
1607 {
1608         if (f->xfer[0]) {
1609                 *(int *)addr = f->xfer[0]->max_frame_size;
1610         } else {
1611                 return (EINVAL);
1612         }
1613         return (0);
1614 }
1615
1616 static int
1617 ugen_set_buffer_size(struct usb2_fifo *f, void *addr)
1618 {
1619         usb2_frlength_t t;
1620
1621         if (*(int *)addr < 0)
1622                 t = 0;          /* use "wMaxPacketSize" */
1623         else if (*(int *)addr < (256 * 1024))
1624                 t = *(int *)addr;
1625         else
1626                 t = 256 * 1024;
1627
1628         if (f->bufsize == t) {
1629                 /* same value like before - accept */
1630                 return (0);
1631         }
1632         if (f->xfer[0] || f->xfer[1]) {
1633                 /* cannot change this during transfer */
1634                 return (EBUSY);
1635         }
1636         f->bufsize = t;
1637         return (0);
1638 }
1639
1640 static int
1641 ugen_get_buffer_size(struct usb2_fifo *f, void *addr)
1642 {
1643         *(int *)addr = f->bufsize;
1644         return (0);
1645 }
1646
1647 static int
1648 ugen_get_iface_desc(struct usb2_fifo *f,
1649     struct usb2_interface_descriptor *idesc)
1650 {
1651         struct usb2_interface *iface;
1652
1653         iface = usb2_get_iface(f->udev, f->iface_index);
1654         if (iface && iface->idesc) {
1655                 *idesc = *(iface->idesc);
1656         } else {
1657                 return (EIO);
1658         }
1659         return (0);
1660 }
1661
1662 static int
1663 ugen_get_endpoint_desc(struct usb2_fifo *f,
1664     struct usb2_endpoint_descriptor *ed)
1665 {
1666         struct usb2_pipe *pipe;
1667
1668         pipe = f->priv_sc0;
1669
1670         if (pipe && pipe->edesc) {
1671                 *ed = *pipe->edesc;
1672         } else {
1673                 return (EINVAL);
1674         }
1675         return (0);
1676 }
1677
1678 static int
1679 ugen_set_power_mode(struct usb2_fifo *f, int mode)
1680 {
1681         struct usb2_device *udev = f->udev;
1682         int err;
1683         uint8_t old_mode;
1684
1685         if ((udev == NULL) ||
1686             (udev->parent_hub == NULL)) {
1687                 return (EINVAL);
1688         }
1689         err = priv_check(curthread, PRIV_DRIVER);
1690         if (err)
1691                 return (err);
1692
1693         /* get old power mode */
1694         old_mode = udev->power_mode;
1695
1696         /* if no change, then just return */
1697         if (old_mode == mode)
1698                 return (0);
1699
1700         switch (mode) {
1701         case USB_POWER_MODE_OFF:
1702                 /* get the device unconfigured */
1703                 err = ugen_set_config(f, USB_UNCONFIG_INDEX);
1704                 if (err) {
1705                         DPRINTFN(0, "Could not unconfigure "
1706                             "device (ignored)\n");
1707                 }
1708
1709                 /* clear port enable */
1710                 err = usb2_req_clear_port_feature(udev->parent_hub,
1711                     NULL, udev->port_no, UHF_PORT_ENABLE);
1712                 break;
1713
1714         case USB_POWER_MODE_ON:
1715         case USB_POWER_MODE_SAVE:
1716                 break;
1717
1718         case USB_POWER_MODE_RESUME:
1719                 err = usb2_req_clear_port_feature(udev->parent_hub,
1720                     NULL, udev->port_no, UHF_PORT_SUSPEND);
1721                 mode = USB_POWER_MODE_SAVE;
1722                 break;
1723
1724         case USB_POWER_MODE_SUSPEND:
1725                 err = usb2_req_set_port_feature(udev->parent_hub,
1726                     NULL, udev->port_no, UHF_PORT_SUSPEND);
1727                 mode = USB_POWER_MODE_SAVE;
1728                 break;
1729
1730         default:
1731                 return (EINVAL);
1732         }
1733
1734         if (err)
1735                 return (ENXIO);         /* I/O failure */
1736
1737         /* if we are powered off we need to re-enumerate first */
1738         if (old_mode == USB_POWER_MODE_OFF) {
1739                 err = ugen_re_enumerate(f);
1740                 if (err)
1741                         return (err);
1742         }
1743
1744         /* set new power mode */
1745         usb2_set_power_mode(udev, mode);
1746
1747         return (0);                     /* success */
1748 }
1749
1750 static int
1751 ugen_get_power_mode(struct usb2_fifo *f)
1752 {
1753         struct usb2_device *udev = f->udev;
1754
1755         if ((udev == NULL) ||
1756             (udev->parent_hub == NULL)) {
1757                 return (USB_POWER_MODE_ON);
1758         }
1759         return (udev->power_mode);
1760 }
1761
1762 static int
1763 ugen_do_port_feature(struct usb2_fifo *f, uint8_t port_no,
1764     uint8_t set, uint16_t feature)
1765 {
1766         struct usb2_device *udev = f->udev;
1767         struct usb2_hub *hub;
1768         int err;
1769
1770         err = priv_check(curthread, PRIV_DRIVER);
1771         if (err) {
1772                 return (err);
1773         }
1774         if (port_no == 0) {
1775                 return (EINVAL);
1776         }
1777         if ((udev == NULL) ||
1778             (udev->hub == NULL)) {
1779                 return (EINVAL);
1780         }
1781         hub = udev->hub;
1782
1783         if (port_no > hub->nports) {
1784                 return (EINVAL);
1785         }
1786         if (set)
1787                 err = usb2_req_set_port_feature(udev,
1788                     NULL, port_no, feature);
1789         else
1790                 err = usb2_req_clear_port_feature(udev,
1791                     NULL, port_no, feature);
1792
1793         if (err)
1794                 return (ENXIO);         /* failure */
1795
1796         return (0);                     /* success */
1797 }
1798
1799 static int
1800 ugen_iface_ioctl(struct usb2_fifo *f, u_long cmd, void *addr, int fflags)
1801 {
1802         struct usb2_fifo *f_rx;
1803         struct usb2_fifo *f_tx;
1804         int error = 0;
1805
1806         f_rx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_RX];
1807         f_tx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_TX];
1808
1809         switch (cmd) {
1810         case USB_SET_RX_SHORT_XFER:
1811                 if (fflags & FREAD) {
1812                         error = ugen_set_short_xfer(f_rx, addr);
1813                 } else {
1814                         error = EINVAL;
1815                 }
1816                 break;
1817
1818         case USB_SET_TX_FORCE_SHORT:
1819                 if (fflags & FWRITE) {
1820                         error = ugen_set_short_xfer(f_tx, addr);
1821                 } else {
1822                         error = EINVAL;
1823                 }
1824                 break;
1825
1826         case USB_SET_RX_TIMEOUT:
1827                 if (fflags & FREAD) {
1828                         error = ugen_set_timeout(f_rx, addr);
1829                 } else {
1830                         error = EINVAL;
1831                 }
1832                 break;
1833
1834         case USB_SET_TX_TIMEOUT:
1835                 if (fflags & FWRITE) {
1836                         error = ugen_set_timeout(f_tx, addr);
1837                 } else {
1838                         error = EINVAL;
1839                 }
1840                 break;
1841
1842         case USB_GET_RX_FRAME_SIZE:
1843                 if (fflags & FREAD) {
1844                         error = ugen_get_frame_size(f_rx, addr);
1845                 } else {
1846                         error = EINVAL;
1847                 }
1848                 break;
1849
1850         case USB_GET_TX_FRAME_SIZE:
1851                 if (fflags & FWRITE) {
1852                         error = ugen_get_frame_size(f_tx, addr);
1853                 } else {
1854                         error = EINVAL;
1855                 }
1856                 break;
1857
1858         case USB_SET_RX_BUFFER_SIZE:
1859                 if (fflags & FREAD) {
1860                         error = ugen_set_buffer_size(f_rx, addr);
1861                 } else {
1862                         error = EINVAL;
1863                 }
1864                 break;
1865
1866         case USB_SET_TX_BUFFER_SIZE:
1867                 if (fflags & FWRITE) {
1868                         error = ugen_set_buffer_size(f_tx, addr);
1869                 } else {
1870                         error = EINVAL;
1871                 }
1872                 break;
1873
1874         case USB_GET_RX_BUFFER_SIZE:
1875                 if (fflags & FREAD) {
1876                         error = ugen_get_buffer_size(f_rx, addr);
1877                 } else {
1878                         error = EINVAL;
1879                 }
1880                 break;
1881
1882         case USB_GET_TX_BUFFER_SIZE:
1883                 if (fflags & FWRITE) {
1884                         error = ugen_get_buffer_size(f_tx, addr);
1885                 } else {
1886                         error = EINVAL;
1887                 }
1888                 break;
1889
1890         case USB_GET_RX_INTERFACE_DESC:
1891                 if (fflags & FREAD) {
1892                         error = ugen_get_iface_desc(f_rx, addr);
1893                 } else {
1894                         error = EINVAL;
1895                 }
1896                 break;
1897
1898         case USB_GET_TX_INTERFACE_DESC:
1899                 if (fflags & FWRITE) {
1900                         error = ugen_get_iface_desc(f_tx, addr);
1901                 } else {
1902                         error = EINVAL;
1903                 }
1904                 break;
1905
1906         case USB_GET_RX_ENDPOINT_DESC:
1907                 if (fflags & FREAD) {
1908                         error = ugen_get_endpoint_desc(f_rx, addr);
1909                 } else {
1910                         error = EINVAL;
1911                 }
1912                 break;
1913
1914         case USB_GET_TX_ENDPOINT_DESC:
1915                 if (fflags & FWRITE) {
1916                         error = ugen_get_endpoint_desc(f_tx, addr);
1917                 } else {
1918                         error = EINVAL;
1919                 }
1920                 break;
1921
1922         case USB_SET_RX_STALL_FLAG:
1923                 if ((fflags & FREAD) && (*(int *)addr)) {
1924                         f_rx->flag_stall = 1;
1925                 }
1926                 break;
1927
1928         case USB_SET_TX_STALL_FLAG:
1929                 if ((fflags & FWRITE) && (*(int *)addr)) {
1930                         f_tx->flag_stall = 1;
1931                 }
1932                 break;
1933
1934         default:
1935                 error = ENOIOCTL;
1936                 break;
1937         }
1938         return (error);
1939 }
1940
1941 static int
1942 ugen_ioctl_post(struct usb2_fifo *f, u_long cmd, void *addr, int fflags)
1943 {
1944         union {
1945                 struct usb2_interface_descriptor *idesc;
1946                 struct usb2_alt_interface *ai;
1947                 struct usb2_device_descriptor *ddesc;
1948                 struct usb2_config_descriptor *cdesc;
1949                 struct usb2_device_stats *stat;
1950                 struct usb2_fs_init *pinit;
1951                 struct usb2_fs_uninit *puninit;
1952                 uint32_t *ptime;
1953                 void   *addr;
1954                 int    *pint;
1955         }     u;
1956         struct usb2_device_descriptor *dtemp;
1957         struct usb2_config_descriptor *ctemp;
1958         struct usb2_interface *iface;
1959         int error = 0;
1960         uint8_t n;
1961
1962         u.addr = addr;
1963
1964         DPRINTFN(6, "cmd=0x%08lx\n", cmd);
1965
1966         switch (cmd) {
1967         case USB_DISCOVER:
1968                 usb2_needs_explore_all();
1969                 break;
1970
1971         case USB_SETDEBUG:
1972                 if (!(fflags & FWRITE)) {
1973                         error = EPERM;
1974                         break;
1975                 }
1976                 usb2_debug = *(int *)addr;
1977                 break;
1978
1979         case USB_GET_CONFIG:
1980                 *(int *)addr = f->udev->curr_config_index;
1981                 break;
1982
1983         case USB_SET_CONFIG:
1984                 if (!(fflags & FWRITE)) {
1985                         error = EPERM;
1986                         break;
1987                 }
1988                 error = ugen_set_config(f, *(int *)addr);
1989                 break;
1990
1991         case USB_GET_ALTINTERFACE:
1992                 iface = usb2_get_iface(f->udev,
1993                     u.ai->uai_interface_index);
1994                 if (iface && iface->idesc) {
1995                         u.ai->uai_alt_index = iface->alt_index;
1996                 } else {
1997                         error = EINVAL;
1998                 }
1999                 break;
2000
2001         case USB_SET_ALTINTERFACE:
2002                 if (!(fflags & FWRITE)) {
2003                         error = EPERM;
2004                         break;
2005                 }
2006                 error = ugen_set_interface(f,
2007                     u.ai->uai_interface_index, u.ai->uai_alt_index);
2008                 break;
2009
2010         case USB_GET_DEVICE_DESC:
2011                 dtemp = usb2_get_device_descriptor(f->udev);
2012                 if (!dtemp) {
2013                         error = EIO;
2014                         break;
2015                 }
2016                 *u.ddesc = *dtemp;
2017                 break;
2018
2019         case USB_GET_CONFIG_DESC:
2020                 ctemp = usb2_get_config_descriptor(f->udev);
2021                 if (!ctemp) {
2022                         error = EIO;
2023                         break;
2024                 }
2025                 *u.cdesc = *ctemp;
2026                 break;
2027
2028         case USB_GET_FULL_DESC:
2029                 error = ugen_get_cdesc(f, addr);
2030                 break;
2031
2032         case USB_GET_STRING_DESC:
2033                 error = ugen_get_sdesc(f, addr);
2034                 break;
2035
2036         case USB_GET_IFACE_DRIVER:
2037                 error = ugen_get_iface_driver(f, addr);
2038                 break;
2039
2040         case USB_REQUEST:
2041         case USB_DO_REQUEST:
2042                 if (!(fflags & FWRITE)) {
2043                         error = EPERM;
2044                         break;
2045                 }
2046                 error = ugen_do_request(f, addr);
2047                 break;
2048
2049         case USB_DEVICEINFO:
2050         case USB_GET_DEVICEINFO:
2051                 error = usb2_gen_fill_deviceinfo(f, addr);
2052                 break;
2053
2054         case USB_DEVICESTATS:
2055                 for (n = 0; n != 4; n++) {
2056
2057                         u.stat->uds_requests_fail[n] =
2058                             f->udev->bus->stats_err.uds_requests[n];
2059
2060                         u.stat->uds_requests_ok[n] =
2061                             f->udev->bus->stats_ok.uds_requests[n];
2062                 }
2063                 break;
2064
2065         case USB_DEVICEENUMERATE:
2066                 error = ugen_re_enumerate(f);
2067                 break;
2068
2069         case USB_GET_PLUGTIME:
2070                 *u.ptime = f->udev->plugtime;
2071                 break;
2072
2073         case USB_CLAIM_INTERFACE:
2074         case USB_RELEASE_INTERFACE:
2075                 /* TODO */
2076                 break;
2077
2078         case USB_IFACE_DRIVER_ACTIVE:
2079                 /* TODO */
2080                 *u.pint = 0;
2081                 break;
2082
2083         case USB_IFACE_DRIVER_DETACH:
2084                 /* TODO */
2085                 error = priv_check(curthread, PRIV_DRIVER);
2086                 if (error) {
2087                         break;
2088                 }
2089                 error = EINVAL;
2090                 break;
2091
2092         case USB_SET_POWER_MODE:
2093                 error = ugen_set_power_mode(f, *u.pint);
2094                 break;
2095
2096         case USB_GET_POWER_MODE:
2097                 *u.pint = ugen_get_power_mode(f);
2098                 break;
2099
2100         case USB_SET_PORT_ENABLE:
2101                 error = ugen_do_port_feature(f,
2102                     *u.pint, 1, UHF_PORT_ENABLE);
2103                 break;
2104
2105         case USB_SET_PORT_DISABLE:
2106                 error = ugen_do_port_feature(f,
2107                     *u.pint, 0, UHF_PORT_ENABLE);
2108                 break;
2109
2110         case USB_FS_INIT:
2111                 /* verify input parameters */
2112                 if (u.pinit->pEndpoints == NULL) {
2113                         error = EINVAL;
2114                         break;
2115                 }
2116                 if (u.pinit->ep_index_max > 127) {
2117                         error = EINVAL;
2118                         break;
2119                 }
2120                 if (u.pinit->ep_index_max == 0) {
2121                         error = EINVAL;
2122                         break;
2123                 }
2124                 if (f->fs_xfer != NULL) {
2125                         error = EBUSY;
2126                         break;
2127                 }
2128                 if (f->dev_ep_index != 0) {
2129                         error = EINVAL;
2130                         break;
2131                 }
2132                 if (ugen_fifo_in_use(f, fflags)) {
2133                         error = EBUSY;
2134                         break;
2135                 }
2136                 error = usb2_fifo_alloc_buffer(f, 1, u.pinit->ep_index_max);
2137                 if (error) {
2138                         break;
2139                 }
2140                 f->fs_xfer = malloc(sizeof(f->fs_xfer[0]) *
2141                     u.pinit->ep_index_max, M_USB, M_WAITOK | M_ZERO);
2142                 if (f->fs_xfer == NULL) {
2143                         usb2_fifo_free_buffer(f);
2144                         error = ENOMEM;
2145                         break;
2146                 }
2147                 f->fs_ep_max = u.pinit->ep_index_max;
2148                 f->fs_ep_ptr = u.pinit->pEndpoints;
2149                 break;
2150
2151         case USB_FS_UNINIT:
2152                 if (u.puninit->dummy != 0) {
2153                         error = EINVAL;
2154                         break;
2155                 }
2156                 error = ugen_fs_uninit(f);
2157                 break;
2158
2159         default:
2160                 mtx_lock(f->priv_mtx);
2161                 error = ugen_iface_ioctl(f, cmd, addr, fflags);
2162                 mtx_unlock(f->priv_mtx);
2163                 break;
2164         }
2165         DPRINTFN(6, "error=%d\n", error);
2166         return (error);
2167 }
2168
2169 static void
2170 ugen_default_fs_callback(struct usb2_xfer *xfer)
2171 {
2172         ;                               /* workaround for a bug in "indent" */
2173
2174         DPRINTF("st=%u alen=%u aframes=%u\n",
2175             USB_GET_STATE(xfer), xfer->actlen, xfer->aframes);
2176
2177         switch (USB_GET_STATE(xfer)) {
2178         case USB_ST_SETUP:
2179                 usb2_start_hardware(xfer);
2180                 break;
2181         default:
2182                 ugen_fs_set_complete(xfer->priv_sc, USB_P2U(xfer->priv_fifo));
2183                 break;
2184         }
2185 }
2186 #endif  /* USB_HAVE_UGEN */