usb_generic.c

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    1 /* $FreeBSD: releng/8.2/sys/dev/usb/usb_generic.c 215944 2010-11-27 19:35:12Z thompsa $ */
    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 <sys/stdint.h>
   28 #include <sys/stddef.h>
   29 #include <sys/param.h>
   30 #include <sys/queue.h>
   31 #include <sys/types.h>
   32 #include <sys/systm.h>
   33 #include <sys/kernel.h>
   34 #include <sys/bus.h>
   35 #include <sys/linker_set.h>
   36 #include <sys/module.h>
   37 #include <sys/lock.h>
   38 #include <sys/mutex.h>
   39 #include <sys/condvar.h>
   40 #include <sys/sysctl.h>
   41 #include <sys/sx.h>
   42 #include <sys/unistd.h>
   43 #include <sys/callout.h>
   44 #include <sys/malloc.h>
   45 #include <sys/priv.h>
   46 #include <sys/conf.h>
   47 #include <sys/fcntl.h>
   48 
   49 #include <dev/usb/usb.h>
   50 #include <dev/usb/usb_ioctl.h>
   51 #include <dev/usb/usbdi.h>
   52 #include <dev/usb/usbdi_util.h>
   53 
   54 #define USB_DEBUG_VAR ugen_debug
   55 
   56 #include <dev/usb/usb_core.h>
   57 #include <dev/usb/usb_dev.h>
   58 #include <dev/usb/usb_mbuf.h>
   59 #include <dev/usb/usb_process.h>
   60 #include <dev/usb/usb_device.h>
   61 #include <dev/usb/usb_debug.h>
   62 #include <dev/usb/usb_request.h>
   63 #include <dev/usb/usb_busdma.h>
   64 #include <dev/usb/usb_util.h>
   65 #include <dev/usb/usb_hub.h>
   66 #include <dev/usb/usb_generic.h>
   67 #include <dev/usb/usb_transfer.h>
   68 
   69 #include <dev/usb/usb_controller.h>
   70 #include <dev/usb/usb_bus.h>
   71 
   72 #if USB_HAVE_UGEN
   73 
   74 /* defines */
   75 
   76 #define UGEN_BULK_FS_BUFFER_SIZE        (64*32) /* bytes */
   77 #define UGEN_BULK_HS_BUFFER_SIZE        (1024*32)       /* bytes */
   78 #define UGEN_HW_FRAMES  50              /* number of milliseconds per transfer */
   79 
   80 /* function prototypes */
   81 
   82 static usb_callback_t ugen_read_clear_stall_callback;
   83 static usb_callback_t ugen_write_clear_stall_callback;
   84 static usb_callback_t ugen_ctrl_read_callback;
   85 static usb_callback_t ugen_ctrl_write_callback;
   86 static usb_callback_t ugen_isoc_read_callback;
   87 static usb_callback_t ugen_isoc_write_callback;
   88 static usb_callback_t ugen_ctrl_fs_callback;
   89 
   90 static usb_fifo_open_t ugen_open;
   91 static usb_fifo_close_t ugen_close;
   92 static usb_fifo_ioctl_t ugen_ioctl;
   93 static usb_fifo_ioctl_t ugen_ioctl_post;
   94 static usb_fifo_cmd_t ugen_start_read;
   95 static usb_fifo_cmd_t ugen_start_write;
   96 static usb_fifo_cmd_t ugen_stop_io;
   97 
   98 static int      ugen_transfer_setup(struct usb_fifo *,
   99                      const struct usb_config *, uint8_t);
  100 static int      ugen_open_pipe_write(struct usb_fifo *);
  101 static int      ugen_open_pipe_read(struct usb_fifo *);
  102 static int      ugen_set_config(struct usb_fifo *, uint8_t);
  103 static int      ugen_set_interface(struct usb_fifo *, uint8_t, uint8_t);
  104 static int      ugen_get_cdesc(struct usb_fifo *, struct usb_gen_descriptor *);
  105 static int      ugen_get_sdesc(struct usb_fifo *, struct usb_gen_descriptor *);
  106 static int      ugen_get_iface_driver(struct usb_fifo *f, struct usb_gen_descriptor *ugd);
  107 static int      usb_gen_fill_deviceinfo(struct usb_fifo *,
  108                     struct usb_device_info *);
  109 static int      ugen_re_enumerate(struct usb_fifo *);
  110 static int      ugen_iface_ioctl(struct usb_fifo *, u_long, void *, int);
  111 static uint8_t  ugen_fs_get_complete(struct usb_fifo *, uint8_t *);
  112 static int      ugen_fs_uninit(struct usb_fifo *f);
  113 
  114 /* structures */
  115 
  116 struct usb_fifo_methods usb_ugen_methods = {
  117         .f_open = &ugen_open,
  118         .f_close = &ugen_close,
  119         .f_ioctl = &ugen_ioctl,
  120         .f_ioctl_post = &ugen_ioctl_post,
  121         .f_start_read = &ugen_start_read,
  122         .f_stop_read = &ugen_stop_io,
  123         .f_start_write = &ugen_start_write,
  124         .f_stop_write = &ugen_stop_io,
  125 };
  126 
  127 #ifdef USB_DEBUG
  128 static int ugen_debug = 0;
  129 
  130 SYSCTL_NODE(_hw_usb, OID_AUTO, ugen, CTLFLAG_RW, 0, "USB generic");
  131 SYSCTL_INT(_hw_usb_ugen, OID_AUTO, debug, CTLFLAG_RW, &ugen_debug,
  132     0, "Debug level");
  133 
  134 TUNABLE_INT("hw.usb.ugen.debug", &ugen_debug);
  135 #endif
  136 
  137 
  138 /* prototypes */
  139 
  140 static int
  141 ugen_transfer_setup(struct usb_fifo *f,
  142     const struct usb_config *setup, uint8_t n_setup)
  143 {
  144         struct usb_endpoint *ep = usb_fifo_softc(f);
  145         struct usb_device *udev = f->udev;
  146         uint8_t iface_index = ep->iface_index;
  147         int error;
  148 
  149         mtx_unlock(f->priv_mtx);
  150 
  151         /*
  152          * "usbd_transfer_setup()" can sleep so one needs to make a wrapper,
  153          * exiting the mutex and checking things
  154          */
  155         error = usbd_transfer_setup(udev, &iface_index, f->xfer,
  156             setup, n_setup, f, f->priv_mtx);
  157         if (error == 0) {
  158 
  159                 if (f->xfer[0]->nframes == 1) {
  160                         error = usb_fifo_alloc_buffer(f,
  161                             f->xfer[0]->max_data_length, 2);
  162                 } else {
  163                         error = usb_fifo_alloc_buffer(f,
  164                             f->xfer[0]->max_frame_size,
  165                             2 * f->xfer[0]->nframes);
  166                 }
  167                 if (error) {
  168                         usbd_transfer_unsetup(f->xfer, n_setup);
  169                 }
  170         }
  171         mtx_lock(f->priv_mtx);
  172 
  173         return (error);
  174 }
  175 
  176 static int
  177 ugen_open(struct usb_fifo *f, int fflags)
  178 {
  179         struct usb_endpoint *ep = usb_fifo_softc(f);
  180         struct usb_endpoint_descriptor *ed = ep->edesc;
  181         uint8_t type;
  182 
  183         DPRINTFN(6, "flag=0x%x\n", fflags);
  184 
  185         mtx_lock(f->priv_mtx);
  186         switch (usbd_get_speed(f->udev)) {
  187         case USB_SPEED_LOW:
  188         case USB_SPEED_FULL:
  189                 f->nframes = UGEN_HW_FRAMES;
  190                 f->bufsize = UGEN_BULK_FS_BUFFER_SIZE;
  191                 break;
  192         default:
  193                 f->nframes = UGEN_HW_FRAMES * 8;
  194                 f->bufsize = UGEN_BULK_HS_BUFFER_SIZE;
  195                 break;
  196         }
  197 
  198         type = ed->bmAttributes & UE_XFERTYPE;
  199         if (type == UE_INTERRUPT) {
  200                 f->bufsize = 0;         /* use "wMaxPacketSize" */
  201         }
  202         f->timeout = USB_NO_TIMEOUT;
  203         f->flag_short = 0;
  204         f->fifo_zlp = 0;
  205         mtx_unlock(f->priv_mtx);
  206 
  207         return (0);
  208 }
  209 
  210 static void
  211 ugen_close(struct usb_fifo *f, int fflags)
  212 {
  213         DPRINTFN(6, "flag=0x%x\n", fflags);
  214 
  215         /* cleanup */
  216 
  217         mtx_lock(f->priv_mtx);
  218         usbd_transfer_stop(f->xfer[0]);
  219         usbd_transfer_stop(f->xfer[1]);
  220         mtx_unlock(f->priv_mtx);
  221 
  222         usbd_transfer_unsetup(f->xfer, 2);
  223         usb_fifo_free_buffer(f);
  224 
  225         if (ugen_fs_uninit(f)) {
  226                 /* ignore any errors - we are closing */
  227                 DPRINTFN(6, "no FIFOs\n");
  228         }
  229 }
  230 
  231 static int
  232 ugen_open_pipe_write(struct usb_fifo *f)
  233 {
  234         struct usb_config usb_config[2];
  235         struct usb_endpoint *ep = usb_fifo_softc(f);
  236         struct usb_endpoint_descriptor *ed = ep->edesc;
  237 
  238         mtx_assert(f->priv_mtx, MA_OWNED);
  239 
  240         if (f->xfer[0] || f->xfer[1]) {
  241                 /* transfers are already opened */
  242                 return (0);
  243         }
  244         bzero(usb_config, sizeof(usb_config));
  245 
  246         usb_config[1].type = UE_CONTROL;
  247         usb_config[1].endpoint = 0;
  248         usb_config[1].direction = UE_DIR_ANY;
  249         usb_config[1].timeout = 1000;   /* 1 second */
  250         usb_config[1].interval = 50;/* 50 milliseconds */
  251         usb_config[1].bufsize = sizeof(struct usb_device_request);
  252         usb_config[1].callback = &ugen_write_clear_stall_callback;
  253         usb_config[1].usb_mode = USB_MODE_HOST;
  254 
  255         usb_config[0].type = ed->bmAttributes & UE_XFERTYPE;
  256         usb_config[0].endpoint = ed->bEndpointAddress & UE_ADDR;
  257         usb_config[0].direction = UE_DIR_TX;
  258         usb_config[0].interval = USB_DEFAULT_INTERVAL;
  259         usb_config[0].flags.proxy_buffer = 1;
  260         usb_config[0].usb_mode = USB_MODE_DUAL; /* both modes */
  261 
  262         switch (ed->bmAttributes & UE_XFERTYPE) {
  263         case UE_INTERRUPT:
  264         case UE_BULK:
  265                 if (f->flag_short) {
  266                         usb_config[0].flags.force_short_xfer = 1;
  267                 }
  268                 usb_config[0].callback = &ugen_ctrl_write_callback;
  269                 usb_config[0].timeout = f->timeout;
  270                 usb_config[0].frames = 1;
  271                 usb_config[0].bufsize = f->bufsize;
  272                 if (ugen_transfer_setup(f, usb_config, 2)) {
  273                         return (EIO);
  274                 }
  275                 /* first transfer does not clear stall */
  276                 f->flag_stall = 0;
  277                 break;
  278 
  279         case UE_ISOCHRONOUS:
  280                 usb_config[0].flags.short_xfer_ok = 1;
  281                 usb_config[0].bufsize = 0;      /* use default */
  282                 usb_config[0].frames = f->nframes;
  283                 usb_config[0].callback = &ugen_isoc_write_callback;
  284                 usb_config[0].timeout = 0;
  285 
  286                 /* clone configuration */
  287                 usb_config[1] = usb_config[0];
  288 
  289                 if (ugen_transfer_setup(f, usb_config, 2)) {
  290                         return (EIO);
  291                 }
  292                 break;
  293         default:
  294                 return (EINVAL);
  295         }
  296         return (0);
  297 }
  298 
  299 static int
  300 ugen_open_pipe_read(struct usb_fifo *f)
  301 {
  302         struct usb_config usb_config[2];
  303         struct usb_endpoint *ep = usb_fifo_softc(f);
  304         struct usb_endpoint_descriptor *ed = ep->edesc;
  305 
  306         mtx_assert(f->priv_mtx, MA_OWNED);
  307 
  308         if (f->xfer[0] || f->xfer[1]) {
  309                 /* transfers are already opened */
  310                 return (0);
  311         }
  312         bzero(usb_config, sizeof(usb_config));
  313 
  314         usb_config[1].type = UE_CONTROL;
  315         usb_config[1].endpoint = 0;
  316         usb_config[1].direction = UE_DIR_ANY;
  317         usb_config[1].timeout = 1000;   /* 1 second */
  318         usb_config[1].interval = 50;/* 50 milliseconds */
  319         usb_config[1].bufsize = sizeof(struct usb_device_request);
  320         usb_config[1].callback = &ugen_read_clear_stall_callback;
  321         usb_config[1].usb_mode = USB_MODE_HOST;
  322 
  323         usb_config[0].type = ed->bmAttributes & UE_XFERTYPE;
  324         usb_config[0].endpoint = ed->bEndpointAddress & UE_ADDR;
  325         usb_config[0].direction = UE_DIR_RX;
  326         usb_config[0].interval = USB_DEFAULT_INTERVAL;
  327         usb_config[0].flags.proxy_buffer = 1;
  328         usb_config[0].usb_mode = USB_MODE_DUAL; /* both modes */
  329 
  330         switch (ed->bmAttributes & UE_XFERTYPE) {
  331         case UE_INTERRUPT:
  332         case UE_BULK:
  333                 if (f->flag_short) {
  334                         usb_config[0].flags.short_xfer_ok = 1;
  335                 }
  336                 usb_config[0].timeout = f->timeout;
  337                 usb_config[0].frames = 1;
  338                 usb_config[0].callback = &ugen_ctrl_read_callback;
  339                 usb_config[0].bufsize = f->bufsize;
  340 
  341                 if (ugen_transfer_setup(f, usb_config, 2)) {
  342                         return (EIO);
  343                 }
  344                 /* first transfer does not clear stall */
  345                 f->flag_stall = 0;
  346                 break;
  347 
  348         case UE_ISOCHRONOUS:
  349                 usb_config[0].flags.short_xfer_ok = 1;
  350                 usb_config[0].bufsize = 0;      /* use default */
  351                 usb_config[0].frames = f->nframes;
  352                 usb_config[0].callback = &ugen_isoc_read_callback;
  353                 usb_config[0].timeout = 0;
  354 
  355                 /* clone configuration */
  356                 usb_config[1] = usb_config[0];
  357 
  358                 if (ugen_transfer_setup(f, usb_config, 2)) {
  359                         return (EIO);
  360                 }
  361                 break;
  362 
  363         default:
  364                 return (EINVAL);
  365         }
  366         return (0);
  367 }
  368 
  369 static void
  370 ugen_start_read(struct usb_fifo *f)
  371 {
  372         /* check that pipes are open */
  373         if (ugen_open_pipe_read(f)) {
  374                 /* signal error */
  375                 usb_fifo_put_data_error(f);
  376         }
  377         /* start transfers */
  378         usbd_transfer_start(f->xfer[0]);
  379         usbd_transfer_start(f->xfer[1]);
  380 }
  381 
  382 static void
  383 ugen_start_write(struct usb_fifo *f)
  384 {
  385         /* check that pipes are open */
  386         if (ugen_open_pipe_write(f)) {
  387                 /* signal error */
  388                 usb_fifo_get_data_error(f);
  389         }
  390         /* start transfers */
  391         usbd_transfer_start(f->xfer[0]);
  392         usbd_transfer_start(f->xfer[1]);
  393 }
  394 
  395 static void
  396 ugen_stop_io(struct usb_fifo *f)
  397 {
  398         /* stop transfers */
  399         usbd_transfer_stop(f->xfer[0]);
  400         usbd_transfer_stop(f->xfer[1]);
  401 }
  402 
  403 static void
  404 ugen_ctrl_read_callback(struct usb_xfer *xfer, usb_error_t error)
  405 {
  406         struct usb_fifo *f = usbd_xfer_softc(xfer);
  407         struct usb_mbuf *m;
  408 
  409         DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
  410 
  411         switch (USB_GET_STATE(xfer)) {
  412         case USB_ST_TRANSFERRED:
  413                 if (xfer->actlen == 0) {
  414                         if (f->fifo_zlp != 4) {
  415                                 f->fifo_zlp++;
  416                         } else {
  417                                 /*
  418                                  * Throttle a little bit we have multiple ZLPs
  419                                  * in a row!
  420                                  */
  421                                 xfer->interval = 64;    /* ms */
  422                         }
  423                 } else {
  424                         /* clear throttle */
  425                         xfer->interval = 0;
  426                         f->fifo_zlp = 0;
  427                 }
  428                 usb_fifo_put_data(f, xfer->frbuffers, 0,
  429                     xfer->actlen, 1);
  430 
  431         case USB_ST_SETUP:
  432                 if (f->flag_stall) {
  433                         usbd_transfer_start(f->xfer[1]);
  434                         break;
  435                 }
  436                 USB_IF_POLL(&f->free_q, m);
  437                 if (m) {
  438                         usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
  439                         usbd_transfer_submit(xfer);
  440                 }
  441                 break;
  442 
  443         default:                        /* Error */
  444                 if (xfer->error != USB_ERR_CANCELLED) {
  445                         /* send a zero length packet to userland */
  446                         usb_fifo_put_data(f, xfer->frbuffers, 0, 0, 1);
  447                         f->flag_stall = 1;
  448                         f->fifo_zlp = 0;
  449                         usbd_transfer_start(f->xfer[1]);
  450                 }
  451                 break;
  452         }
  453 }
  454 
  455 static void
  456 ugen_ctrl_write_callback(struct usb_xfer *xfer, usb_error_t error)
  457 {
  458         struct usb_fifo *f = usbd_xfer_softc(xfer);
  459         usb_frlength_t actlen;
  460 
  461         DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
  462 
  463         switch (USB_GET_STATE(xfer)) {
  464         case USB_ST_SETUP:
  465         case USB_ST_TRANSFERRED:
  466                 /*
  467                  * If writing is in stall, just jump to clear stall
  468                  * callback and solve the situation.
  469                  */
  470                 if (f->flag_stall) {
  471                         usbd_transfer_start(f->xfer[1]);
  472                         break;
  473                 }
  474                 /*
  475                  * Write data, setup and perform hardware transfer.
  476                  */
  477                 if (usb_fifo_get_data(f, xfer->frbuffers, 0,
  478                     xfer->max_data_length, &actlen, 0)) {
  479                         usbd_xfer_set_frame_len(xfer, 0, actlen);
  480                         usbd_transfer_submit(xfer);
  481                 }
  482                 break;
  483 
  484         default:                        /* Error */
  485                 if (xfer->error != USB_ERR_CANCELLED) {
  486                         f->flag_stall = 1;
  487                         usbd_transfer_start(f->xfer[1]);
  488                 }
  489                 break;
  490         }
  491 }
  492 
  493 static void
  494 ugen_read_clear_stall_callback(struct usb_xfer *xfer, usb_error_t error)
  495 {
  496         struct usb_fifo *f = usbd_xfer_softc(xfer);
  497         struct usb_xfer *xfer_other = f->xfer[0];
  498 
  499         if (f->flag_stall == 0) {
  500                 /* nothing to do */
  501                 return;
  502         }
  503         if (usbd_clear_stall_callback(xfer, xfer_other)) {
  504                 DPRINTFN(5, "f=%p: stall cleared\n", f);
  505                 f->flag_stall = 0;
  506                 usbd_transfer_start(xfer_other);
  507         }
  508 }
  509 
  510 static void
  511 ugen_write_clear_stall_callback(struct usb_xfer *xfer, usb_error_t error)
  512 {
  513         struct usb_fifo *f = usbd_xfer_softc(xfer);
  514         struct usb_xfer *xfer_other = f->xfer[0];
  515 
  516         if (f->flag_stall == 0) {
  517                 /* nothing to do */
  518                 return;
  519         }
  520         if (usbd_clear_stall_callback(xfer, xfer_other)) {
  521                 DPRINTFN(5, "f=%p: stall cleared\n", f);
  522                 f->flag_stall = 0;
  523                 usbd_transfer_start(xfer_other);
  524         }
  525 }
  526 
  527 static void
  528 ugen_isoc_read_callback(struct usb_xfer *xfer, usb_error_t error)
  529 {
  530         struct usb_fifo *f = usbd_xfer_softc(xfer);
  531         usb_frlength_t offset;
  532         usb_frcount_t n;
  533 
  534         DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
  535 
  536         switch (USB_GET_STATE(xfer)) {
  537         case USB_ST_TRANSFERRED:
  538 
  539                 DPRINTFN(6, "actlen=%d\n", xfer->actlen);
  540 
  541                 offset = 0;
  542 
  543                 for (n = 0; n != xfer->aframes; n++) {
  544                         usb_fifo_put_data(f, xfer->frbuffers, offset,
  545                             xfer->frlengths[n], 1);
  546                         offset += xfer->max_frame_size;
  547                 }
  548 
  549         case USB_ST_SETUP:
  550 tr_setup:
  551                 for (n = 0; n != xfer->nframes; n++) {
  552                         /* setup size for next transfer */
  553                         usbd_xfer_set_frame_len(xfer, n, xfer->max_frame_size);
  554                 }
  555                 usbd_transfer_submit(xfer);
  556                 break;
  557 
  558         default:                        /* Error */
  559                 if (xfer->error == USB_ERR_CANCELLED) {
  560                         break;
  561                 }
  562                 goto tr_setup;
  563         }
  564 }
  565 
  566 static void
  567 ugen_isoc_write_callback(struct usb_xfer *xfer, usb_error_t error)
  568 {
  569         struct usb_fifo *f = usbd_xfer_softc(xfer);
  570         usb_frlength_t actlen;
  571         usb_frlength_t offset;
  572         usb_frcount_t n;
  573 
  574         DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
  575 
  576         switch (USB_GET_STATE(xfer)) {
  577         case USB_ST_TRANSFERRED:
  578         case USB_ST_SETUP:
  579 tr_setup:
  580                 offset = 0;
  581                 for (n = 0; n != xfer->nframes; n++) {
  582                         if (usb_fifo_get_data(f, xfer->frbuffers, offset,
  583                             xfer->max_frame_size, &actlen, 1)) {
  584                                 usbd_xfer_set_frame_len(xfer, n, actlen);
  585                                 offset += actlen;
  586                         } else {
  587                                 break;
  588                         }
  589                 }
  590 
  591                 for (; n != xfer->nframes; n++) {
  592                         /* fill in zero frames */
  593                         usbd_xfer_set_frame_len(xfer, n, 0);
  594                 }
  595                 usbd_transfer_submit(xfer);
  596                 break;
  597 
  598         default:                        /* Error */
  599                 if (xfer->error == USB_ERR_CANCELLED) {
  600                         break;
  601                 }
  602                 goto tr_setup;
  603         }
  604 }
  605 
  606 static int
  607 ugen_set_config(struct usb_fifo *f, uint8_t index)
  608 {
  609         DPRINTFN(2, "index %u\n", index);
  610 
  611         if (f->udev->flags.usb_mode != USB_MODE_HOST) {
  612                 /* not possible in device side mode */
  613                 return (ENOTTY);
  614         }
  615         if (f->udev->curr_config_index == index) {
  616                 /* no change needed */
  617                 return (0);
  618         }
  619         /* make sure all FIFO's are gone */
  620         /* else there can be a deadlock */
  621         if (ugen_fs_uninit(f)) {
  622                 /* ignore any errors */
  623                 DPRINTFN(6, "no FIFOs\n");
  624         }
  625         /* change setting - will free generic FIFOs, if any */
  626         if (usbd_set_config_index(f->udev, index)) {
  627                 return (EIO);
  628         }
  629         /* probe and attach */
  630         if (usb_probe_and_attach(f->udev, USB_IFACE_INDEX_ANY)) {
  631                 return (EIO);
  632         }
  633         return (0);
  634 }
  635 
  636 static int
  637 ugen_set_interface(struct usb_fifo *f,
  638     uint8_t iface_index, uint8_t alt_index)
  639 {
  640         DPRINTFN(2, "%u, %u\n", iface_index, alt_index);
  641 
  642         if (f->udev->flags.usb_mode != USB_MODE_HOST) {
  643                 /* not possible in device side mode */
  644                 return (ENOTTY);
  645         }
  646         /* make sure all FIFO's are gone */
  647         /* else there can be a deadlock */
  648         if (ugen_fs_uninit(f)) {
  649                 /* ignore any errors */
  650                 DPRINTFN(6, "no FIFOs\n");
  651         }
  652         /* change setting - will free generic FIFOs, if any */
  653         if (usbd_set_alt_interface_index(f->udev, iface_index, alt_index)) {
  654                 return (EIO);
  655         }
  656         /* probe and attach */
  657         if (usb_probe_and_attach(f->udev, iface_index)) {
  658                 return (EIO);
  659         }
  660         return (0);
  661 }
  662 
  663 /*------------------------------------------------------------------------*
  664  *      ugen_get_cdesc
  665  *
  666  * This function will retrieve the complete configuration descriptor
  667  * at the given index.
  668  *------------------------------------------------------------------------*/
  669 static int
  670 ugen_get_cdesc(struct usb_fifo *f, struct usb_gen_descriptor *ugd)
  671 {
  672         struct usb_config_descriptor *cdesc;
  673         struct usb_device *udev = f->udev;
  674         int error;
  675         uint16_t len;
  676         uint8_t free_data;
  677 
  678         DPRINTFN(6, "\n");
  679 
  680         if (ugd->ugd_data == NULL) {
  681                 /* userland pointer should not be zero */
  682                 return (EINVAL);
  683         }
  684         if ((ugd->ugd_config_index == USB_UNCONFIG_INDEX) ||
  685             (ugd->ugd_config_index == udev->curr_config_index)) {
  686                 cdesc = usbd_get_config_descriptor(udev);
  687                 if (cdesc == NULL) {
  688                         return (ENXIO);
  689                 }
  690                 free_data = 0;
  691 
  692         } else {
  693                 if (usbd_req_get_config_desc_full(udev,
  694                     NULL, &cdesc, M_USBDEV,
  695                     ugd->ugd_config_index)) {
  696                         return (ENXIO);
  697                 }
  698                 free_data = 1;
  699         }
  700 
  701         len = UGETW(cdesc->wTotalLength);
  702         if (len > ugd->ugd_maxlen) {
  703                 len = ugd->ugd_maxlen;
  704         }
  705         DPRINTFN(6, "len=%u\n", len);
  706 
  707         ugd->ugd_actlen = len;
  708         ugd->ugd_offset = 0;
  709 
  710         error = copyout(cdesc, ugd->ugd_data, len);
  711 
  712         if (free_data) {
  713                 free(cdesc, M_USBDEV);
  714         }
  715         return (error);
  716 }
  717 
  718 static int
  719 ugen_get_sdesc(struct usb_fifo *f, struct usb_gen_descriptor *ugd)
  720 {
  721         void *ptr = f->udev->bus->scratch[0].data;
  722         uint16_t size = sizeof(f->udev->bus->scratch[0].data);
  723         int error;
  724 
  725         if (usbd_req_get_string_desc(f->udev, NULL, ptr,
  726             size, ugd->ugd_lang_id, ugd->ugd_string_index)) {
  727                 error = EINVAL;
  728         } else {
  729 
  730                 if (size > ((uint8_t *)ptr)[0]) {
  731                         size = ((uint8_t *)ptr)[0];
  732                 }
  733                 if (size > ugd->ugd_maxlen) {
  734                         size = ugd->ugd_maxlen;
  735                 }
  736                 ugd->ugd_actlen = size;
  737                 ugd->ugd_offset = 0;
  738 
  739                 error = copyout(ptr, ugd->ugd_data, size);
  740         }
  741         return (error);
  742 }
  743 
  744 /*------------------------------------------------------------------------*
  745  *      ugen_get_iface_driver
  746  *
  747  * This function generates an USB interface description for userland.
  748  *
  749  * Returns:
  750  *    0: Success
  751  * Else: Failure
  752  *------------------------------------------------------------------------*/
  753 static int
  754 ugen_get_iface_driver(struct usb_fifo *f, struct usb_gen_descriptor *ugd)
  755 {
  756         struct usb_device *udev = f->udev;
  757         struct usb_interface *iface;
  758         const char *ptr;
  759         const char *desc;
  760         unsigned int len;
  761         unsigned int maxlen;
  762         char buf[128];
  763         int error;
  764 
  765         DPRINTFN(6, "\n");
  766 
  767         if ((ugd->ugd_data == NULL) || (ugd->ugd_maxlen == 0)) {
  768                 /* userland pointer should not be zero */
  769                 return (EINVAL);
  770         }
  771 
  772         iface = usbd_get_iface(udev, ugd->ugd_iface_index);
  773         if ((iface == NULL) || (iface->idesc == NULL)) {
  774                 /* invalid interface index */
  775                 return (EINVAL);
  776         }
  777 
  778         /* read out device nameunit string, if any */
  779         if ((iface->subdev != NULL) &&
  780             device_is_attached(iface->subdev) &&
  781             (ptr = device_get_nameunit(iface->subdev)) &&
  782             (desc = device_get_desc(iface->subdev))) {
  783 
  784                 /* print description */
  785                 snprintf(buf, sizeof(buf), "%s: <%s>", ptr, desc);
  786 
  787                 /* range checks */
  788                 maxlen = ugd->ugd_maxlen - 1;
  789                 len = strlen(buf);
  790                 if (len > maxlen)
  791                         len = maxlen;
  792 
  793                 /* update actual length, including terminating zero */
  794                 ugd->ugd_actlen = len + 1;
  795 
  796                 /* copy out interface description */
  797                 error = copyout(buf, ugd->ugd_data, ugd->ugd_actlen);
  798         } else {
  799                 /* zero length string is default */
  800                 error = copyout("", ugd->ugd_data, 1);
  801         }
  802         return (error);
  803 }
  804 
  805 /*------------------------------------------------------------------------*
  806  *      usb_gen_fill_deviceinfo
  807  *
  808  * This function dumps information about an USB device to the
  809  * structure pointed to by the "di" argument.
  810  *
  811  * Returns:
  812  *    0: Success
  813  * Else: Failure
  814  *------------------------------------------------------------------------*/
  815 static int
  816 usb_gen_fill_deviceinfo(struct usb_fifo *f, struct usb_device_info *di)
  817 {
  818         struct usb_device *udev;
  819         struct usb_device *hub;
  820 
  821         udev = f->udev;
  822 
  823         bzero(di, sizeof(di[0]));
  824 
  825         di->udi_bus = device_get_unit(udev->bus->bdev);
  826         di->udi_addr = udev->address;
  827         di->udi_index = udev->device_index;
  828         strlcpy(di->udi_serial, usb_get_serial(udev), sizeof(di->udi_serial));
  829         strlcpy(di->udi_vendor, usb_get_manufacturer(udev), sizeof(di->udi_vendor));
  830         strlcpy(di->udi_product, usb_get_product(udev), sizeof(di->udi_product));
  831         usb_printbcd(di->udi_release, sizeof(di->udi_release),
  832             UGETW(udev->ddesc.bcdDevice));
  833         di->udi_vendorNo = UGETW(udev->ddesc.idVendor);
  834         di->udi_productNo = UGETW(udev->ddesc.idProduct);
  835         di->udi_releaseNo = UGETW(udev->ddesc.bcdDevice);
  836         di->udi_class = udev->ddesc.bDeviceClass;
  837         di->udi_subclass = udev->ddesc.bDeviceSubClass;
  838         di->udi_protocol = udev->ddesc.bDeviceProtocol;
  839         di->udi_config_no = udev->curr_config_no;
  840         di->udi_config_index = udev->curr_config_index;
  841         di->udi_power = udev->flags.self_powered ? 0 : udev->power;
  842         di->udi_speed = udev->speed;
  843         di->udi_mode = udev->flags.usb_mode;
  844         di->udi_power_mode = udev->power_mode;
  845         di->udi_suspended = udev->flags.peer_suspended;
  846 
  847         hub = udev->parent_hub;
  848         if (hub) {
  849                 di->udi_hubaddr = hub->address;
  850                 di->udi_hubindex = hub->device_index;
  851                 di->udi_hubport = udev->port_no;
  852         }
  853         return (0);
  854 }
  855 
  856 /*------------------------------------------------------------------------*
  857  *      ugen_check_request
  858  *
  859  * Return values:
  860  * 0: Access allowed
  861  * Else: No access
  862  *------------------------------------------------------------------------*/
  863 static int
  864 ugen_check_request(struct usb_device *udev, struct usb_device_request *req)
  865 {
  866         struct usb_endpoint *ep;
  867         int error;
  868 
  869         /*
  870          * Avoid requests that would damage the bus integrity:
  871          */
  872         if (((req->bmRequestType == UT_WRITE_DEVICE) &&
  873             (req->bRequest == UR_SET_ADDRESS)) ||
  874             ((req->bmRequestType == UT_WRITE_DEVICE) &&
  875             (req->bRequest == UR_SET_CONFIG)) ||
  876             ((req->bmRequestType == UT_WRITE_INTERFACE) &&
  877             (req->bRequest == UR_SET_INTERFACE))) {
  878                 /*
  879                  * These requests can be useful for testing USB drivers.
  880                  */
  881                 error = priv_check(curthread, PRIV_DRIVER);
  882                 if (error) {
  883                         return (error);
  884                 }
  885         }
  886         /*
  887          * Special case - handle clearing of stall
  888          */
  889         if (req->bmRequestType == UT_WRITE_ENDPOINT) {
  890 
  891                 ep = usbd_get_ep_by_addr(udev, req->wIndex[0]);
  892                 if (ep == NULL) {
  893                         return (EINVAL);
  894                 }
  895                 if ((req->bRequest == UR_CLEAR_FEATURE) &&
  896                     (UGETW(req->wValue) == UF_ENDPOINT_HALT)) {
  897                         usbd_clear_data_toggle(udev, ep);
  898                 }
  899         }
  900         /* TODO: add more checks to verify the interface index */
  901 
  902         return (0);
  903 }
  904 
  905 int
  906 ugen_do_request(struct usb_fifo *f, struct usb_ctl_request *ur)
  907 {
  908         int error;
  909         uint16_t len;
  910         uint16_t actlen;
  911 
  912         if (ugen_check_request(f->udev, &ur->ucr_request)) {
  913                 return (EPERM);
  914         }
  915         len = UGETW(ur->ucr_request.wLength);
  916 
  917         /* check if "ucr_data" is valid */
  918         if (len != 0) {
  919                 if (ur->ucr_data == NULL) {
  920                         return (EFAULT);
  921                 }
  922         }
  923         /* do the USB request */
  924         error = usbd_do_request_flags
  925             (f->udev, NULL, &ur->ucr_request, ur->ucr_data,
  926             (ur->ucr_flags & USB_SHORT_XFER_OK) |
  927             USB_USER_DATA_PTR, &actlen,
  928             USB_DEFAULT_TIMEOUT);
  929 
  930         ur->ucr_actlen = actlen;
  931 
  932         if (error) {
  933                 error = EIO;
  934         }
  935         return (error);
  936 }
  937 
  938 /*------------------------------------------------------------------------
  939  *      ugen_re_enumerate
  940  *------------------------------------------------------------------------*/
  941 static int
  942 ugen_re_enumerate(struct usb_fifo *f)
  943 {
  944         struct usb_device *udev = f->udev;
  945         int error;
  946 
  947         /*
  948          * This request can be useful for testing USB drivers:
  949          */
  950         error = priv_check(curthread, PRIV_DRIVER);
  951         if (error) {
  952                 return (error);
  953         }
  954         if (udev->flags.usb_mode != USB_MODE_HOST) {
  955                 /* not possible in device side mode */
  956                 return (ENOTTY);
  957         }
  958         /* make sure all FIFO's are gone */
  959         /* else there can be a deadlock */
  960         if (ugen_fs_uninit(f)) {
  961                 /* ignore any errors */
  962                 DPRINTFN(6, "no FIFOs\n");
  963         }
  964         if (udev->re_enumerate_wait == 0) {
  965                 udev->re_enumerate_wait = 1;
  966                 usb_needs_explore(udev->bus, 0);
  967         }
  968         return (0);
  969 }
  970 
  971 int
  972 ugen_fs_uninit(struct usb_fifo *f)
  973 {
  974         if (f->fs_xfer == NULL) {
  975                 return (EINVAL);
  976         }
  977         usbd_transfer_unsetup(f->fs_xfer, f->fs_ep_max);
  978         free(f->fs_xfer, M_USB);
  979         f->fs_xfer = NULL;
  980         f->fs_ep_max = 0;
  981         f->fs_ep_ptr = NULL;
  982         f->flag_iscomplete = 0;
  983         usb_fifo_free_buffer(f);
  984         return (0);
  985 }
  986 
  987 static uint8_t
  988 ugen_fs_get_complete(struct usb_fifo *f, uint8_t *pindex)
  989 {
  990         struct usb_mbuf *m;
  991 
  992         USB_IF_DEQUEUE(&f->used_q, m);
  993 
  994         if (m) {
  995                 *pindex = *((uint8_t *)(m->cur_data_ptr));
  996 
  997                 USB_IF_ENQUEUE(&f->free_q, m);
  998 
  999                 return (0);             /* success */
 1000         } else {
 1001 
 1002                 *pindex = 0;            /* fix compiler warning */
 1003 
 1004                 f->flag_iscomplete = 0;
 1005         }
 1006         return (1);                     /* failure */
 1007 }
 1008 
 1009 static void
 1010 ugen_fs_set_complete(struct usb_fifo *f, uint8_t index)
 1011 {
 1012         struct usb_mbuf *m;
 1013 
 1014         USB_IF_DEQUEUE(&f->free_q, m);
 1015 
 1016         if (m == NULL) {
 1017                 /* can happen during close */
 1018                 DPRINTF("out of buffers\n");
 1019                 return;
 1020         }
 1021         USB_MBUF_RESET(m);
 1022 
 1023         *((uint8_t *)(m->cur_data_ptr)) = index;
 1024 
 1025         USB_IF_ENQUEUE(&f->used_q, m);
 1026 
 1027         f->flag_iscomplete = 1;
 1028 
 1029         usb_fifo_wakeup(f);
 1030 }
 1031 
 1032 static int
 1033 ugen_fs_copy_in(struct usb_fifo *f, uint8_t ep_index)
 1034 {
 1035         struct usb_device_request *req;
 1036         struct usb_xfer *xfer;
 1037         struct usb_fs_endpoint fs_ep;
 1038         void *uaddr;                    /* userland pointer */
 1039         void *kaddr;
 1040         usb_frlength_t offset;
 1041         usb_frlength_t rem;
 1042         usb_frcount_t n;
 1043         uint32_t length;
 1044         int error;
 1045         uint8_t isread;
 1046 
 1047         if (ep_index >= f->fs_ep_max) {
 1048                 return (EINVAL);
 1049         }
 1050         xfer = f->fs_xfer[ep_index];
 1051         if (xfer == NULL) {
 1052                 return (EINVAL);
 1053         }
 1054         mtx_lock(f->priv_mtx);
 1055         if (usbd_transfer_pending(xfer)) {
 1056                 mtx_unlock(f->priv_mtx);
 1057                 return (EBUSY);         /* should not happen */
 1058         }
 1059         mtx_unlock(f->priv_mtx);
 1060 
 1061         error = copyin(f->fs_ep_ptr +
 1062             ep_index, &fs_ep, sizeof(fs_ep));
 1063         if (error) {
 1064                 return (error);
 1065         }
 1066         /* security checks */
 1067 
 1068         if (fs_ep.nFrames > xfer->max_frame_count) {
 1069                 xfer->error = USB_ERR_INVAL;
 1070                 goto complete;
 1071         }
 1072         if (fs_ep.nFrames == 0) {
 1073                 xfer->error = USB_ERR_INVAL;
 1074                 goto complete;
 1075         }
 1076         error = copyin(fs_ep.ppBuffer,
 1077             &uaddr, sizeof(uaddr));
 1078         if (error) {
 1079                 return (error);
 1080         }
 1081         /* reset first frame */
 1082         usbd_xfer_set_frame_offset(xfer, 0, 0);
 1083 
 1084         if (xfer->flags_int.control_xfr) {
 1085 
 1086                 req = xfer->frbuffers[0].buffer;
 1087 
 1088                 error = copyin(fs_ep.pLength,
 1089                     &length, sizeof(length));
 1090                 if (error) {
 1091                         return (error);
 1092                 }
 1093                 if (length != sizeof(*req)) {
 1094                         xfer->error = USB_ERR_INVAL;
 1095                         goto complete;
 1096                 }
 1097                 if (length != 0) {
 1098                         error = copyin(uaddr, req, length);
 1099                         if (error) {
 1100                                 return (error);
 1101                         }
 1102                 }
 1103                 if (ugen_check_request(f->udev, req)) {
 1104                         xfer->error = USB_ERR_INVAL;
 1105                         goto complete;
 1106                 }
 1107                 usbd_xfer_set_frame_len(xfer, 0, length);
 1108 
 1109                 /* Host mode only ! */
 1110                 if ((req->bmRequestType &
 1111                     (UT_READ | UT_WRITE)) == UT_READ) {
 1112                         isread = 1;
 1113                 } else {
 1114                         isread = 0;
 1115                 }
 1116                 n = 1;
 1117                 offset = sizeof(*req);
 1118 
 1119         } else {
 1120                 /* Device and Host mode */
 1121                 if (USB_GET_DATA_ISREAD(xfer)) {
 1122                         isread = 1;
 1123                 } else {
 1124                         isread = 0;
 1125                 }
 1126                 n = 0;
 1127                 offset = 0;
 1128         }
 1129 
 1130         rem = usbd_xfer_max_len(xfer);
 1131         xfer->nframes = fs_ep.nFrames;
 1132         xfer->timeout = fs_ep.timeout;
 1133         if (xfer->timeout > 65535) {
 1134                 xfer->timeout = 65535;
 1135         }
 1136         if (fs_ep.flags & USB_FS_FLAG_SINGLE_SHORT_OK)
 1137                 xfer->flags.short_xfer_ok = 1;
 1138         else
 1139                 xfer->flags.short_xfer_ok = 0;
 1140 
 1141         if (fs_ep.flags & USB_FS_FLAG_MULTI_SHORT_OK)
 1142                 xfer->flags.short_frames_ok = 1;
 1143         else
 1144                 xfer->flags.short_frames_ok = 0;
 1145 
 1146         if (fs_ep.flags & USB_FS_FLAG_FORCE_SHORT)
 1147                 xfer->flags.force_short_xfer = 1;
 1148         else
 1149                 xfer->flags.force_short_xfer = 0;
 1150 
 1151         if (fs_ep.flags & USB_FS_FLAG_CLEAR_STALL)
 1152                 usbd_xfer_set_stall(xfer);
 1153         else
 1154                 xfer->flags.stall_pipe = 0;
 1155 
 1156         for (; n != xfer->nframes; n++) {
 1157 
 1158                 error = copyin(fs_ep.pLength + n,
 1159                     &length, sizeof(length));
 1160                 if (error) {
 1161                         break;
 1162                 }
 1163                 usbd_xfer_set_frame_len(xfer, n, length);
 1164 
 1165                 if (length > rem) {
 1166                         xfer->error = USB_ERR_INVAL;
 1167                         goto complete;
 1168                 }
 1169                 rem -= length;
 1170 
 1171                 if (!isread) {
 1172 
 1173                         /* we need to know the source buffer */
 1174                         error = copyin(fs_ep.ppBuffer + n,
 1175                             &uaddr, sizeof(uaddr));
 1176                         if (error) {
 1177                                 break;
 1178                         }
 1179                         if (xfer->flags_int.isochronous_xfr) {
 1180                                 /* get kernel buffer address */
 1181                                 kaddr = xfer->frbuffers[0].buffer;
 1182                                 kaddr = USB_ADD_BYTES(kaddr, offset);
 1183                         } else {
 1184                                 /* set current frame offset */
 1185                                 usbd_xfer_set_frame_offset(xfer, offset, n);
 1186 
 1187                                 /* get kernel buffer address */
 1188                                 kaddr = xfer->frbuffers[n].buffer;
 1189                         }
 1190 
 1191                         /* move data */
 1192                         error = copyin(uaddr, kaddr, length);
 1193                         if (error) {
 1194                                 break;
 1195                         }
 1196                 }
 1197                 offset += length;
 1198         }
 1199         return (error);
 1200 
 1201 complete:
 1202         mtx_lock(f->priv_mtx);
 1203         ugen_fs_set_complete(f, ep_index);
 1204         mtx_unlock(f->priv_mtx);
 1205         return (0);
 1206 }
 1207 
 1208 static int
 1209 ugen_fs_copy_out(struct usb_fifo *f, uint8_t ep_index)
 1210 {
 1211         struct usb_device_request *req;
 1212         struct usb_xfer *xfer;
 1213         struct usb_fs_endpoint fs_ep;
 1214         struct usb_fs_endpoint *fs_ep_uptr;     /* userland ptr */
 1215         void *uaddr;                    /* userland ptr */
 1216         void *kaddr;
 1217         usb_frlength_t offset;
 1218         usb_frlength_t rem;
 1219         usb_frcount_t n;
 1220         uint32_t length;
 1221         uint32_t temp;
 1222         int error;
 1223         uint8_t isread;
 1224 
 1225         if (ep_index >= f->fs_ep_max)
 1226                 return (EINVAL);
 1227 
 1228         xfer = f->fs_xfer[ep_index];
 1229         if (xfer == NULL)
 1230                 return (EINVAL);
 1231 
 1232         mtx_lock(f->priv_mtx);
 1233         if (usbd_transfer_pending(xfer)) {
 1234                 mtx_unlock(f->priv_mtx);
 1235                 return (EBUSY);         /* should not happen */
 1236         }
 1237         mtx_unlock(f->priv_mtx);
 1238 
 1239         fs_ep_uptr = f->fs_ep_ptr + ep_index;
 1240         error = copyin(fs_ep_uptr, &fs_ep, sizeof(fs_ep));
 1241         if (error) {
 1242                 return (error);
 1243         }
 1244         fs_ep.status = xfer->error;
 1245         fs_ep.aFrames = xfer->aframes;
 1246         fs_ep.isoc_time_complete = xfer->isoc_time_complete;
 1247         if (xfer->error) {
 1248                 goto complete;
 1249         }
 1250         if (xfer->flags_int.control_xfr) {
 1251                 req = xfer->frbuffers[0].buffer;
 1252 
 1253                 /* Host mode only ! */
 1254                 if ((req->bmRequestType & (UT_READ | UT_WRITE)) == UT_READ) {
 1255                         isread = 1;
 1256                 } else {
 1257                         isread = 0;
 1258                 }
 1259                 if (xfer->nframes == 0)
 1260                         n = 0;          /* should never happen */
 1261                 else
 1262                         n = 1;
 1263         } else {
 1264                 /* Device and Host mode */
 1265                 if (USB_GET_DATA_ISREAD(xfer)) {
 1266                         isread = 1;
 1267                 } else {
 1268                         isread = 0;
 1269                 }
 1270                 n = 0;
 1271         }
 1272 
 1273         /* Update lengths and copy out data */
 1274 
 1275         rem = usbd_xfer_max_len(xfer);
 1276         offset = 0;
 1277 
 1278         for (; n != xfer->nframes; n++) {
 1279 
 1280                 /* get initial length into "temp" */
 1281                 error = copyin(fs_ep.pLength + n,
 1282                     &temp, sizeof(temp));
 1283                 if (error) {
 1284                         return (error);
 1285                 }
 1286                 if (temp > rem) {
 1287                         /* the userland length has been corrupted */
 1288                         DPRINTF("corrupt userland length "
 1289                             "%u > %u\n", temp, rem);
 1290                         fs_ep.status = USB_ERR_INVAL;
 1291                         goto complete;
 1292                 }
 1293                 rem -= temp;
 1294 
 1295                 /* get actual transfer length */
 1296                 length = xfer->frlengths[n];
 1297                 if (length > temp) {
 1298                         /* data overflow */
 1299                         fs_ep.status = USB_ERR_INVAL;
 1300                         DPRINTF("data overflow %u > %u\n",
 1301                             length, temp);
 1302                         goto complete;
 1303                 }
 1304                 if (isread) {
 1305 
 1306                         /* we need to know the destination buffer */
 1307                         error = copyin(fs_ep.ppBuffer + n,
 1308                             &uaddr, sizeof(uaddr));
 1309                         if (error) {
 1310                                 return (error);
 1311                         }
 1312                         if (xfer->flags_int.isochronous_xfr) {
 1313                                 /* only one frame buffer */
 1314                                 kaddr = USB_ADD_BYTES(
 1315                                     xfer->frbuffers[0].buffer, offset);
 1316                         } else {
 1317                                 /* multiple frame buffers */
 1318                                 kaddr = xfer->frbuffers[n].buffer;
 1319                         }
 1320 
 1321                         /* move data */
 1322                         error = copyout(kaddr, uaddr, length);
 1323                         if (error) {
 1324                                 return (error);
 1325                         }
 1326                 }
 1327                 /*
 1328                  * Update offset according to initial length, which is
 1329                  * needed by isochronous transfers!
 1330                  */
 1331                 offset += temp;
 1332 
 1333                 /* update length */
 1334                 error = copyout(&length,
 1335                     fs_ep.pLength + n, sizeof(length));
 1336                 if (error) {
 1337                         return (error);
 1338                 }
 1339         }
 1340 
 1341 complete:
 1342         /* update "aFrames" */
 1343         error = copyout(&fs_ep.aFrames, &fs_ep_uptr->aFrames,
 1344             sizeof(fs_ep.aFrames));
 1345         if (error)
 1346                 goto done;
 1347 
 1348         /* update "isoc_time_complete" */
 1349         error = copyout(&fs_ep.isoc_time_complete,
 1350             &fs_ep_uptr->isoc_time_complete,
 1351             sizeof(fs_ep.isoc_time_complete));
 1352         if (error)
 1353                 goto done;
 1354         /* update "status" */
 1355         error = copyout(&fs_ep.status, &fs_ep_uptr->status,
 1356             sizeof(fs_ep.status));
 1357 done:
 1358         return (error);
 1359 }
 1360 
 1361 static uint8_t
 1362 ugen_fifo_in_use(struct usb_fifo *f, int fflags)
 1363 {
 1364         struct usb_fifo *f_rx;
 1365         struct usb_fifo *f_tx;
 1366 
 1367         f_rx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_RX];
 1368         f_tx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_TX];
 1369 
 1370         if ((fflags & FREAD) && f_rx &&
 1371             (f_rx->xfer[0] || f_rx->xfer[1])) {
 1372                 return (1);             /* RX FIFO in use */
 1373         }
 1374         if ((fflags & FWRITE) && f_tx &&
 1375             (f_tx->xfer[0] || f_tx->xfer[1])) {
 1376                 return (1);             /* TX FIFO in use */
 1377         }
 1378         return (0);                     /* not in use */
 1379 }
 1380 
 1381 static int
 1382 ugen_ioctl(struct usb_fifo *f, u_long cmd, void *addr, int fflags)
 1383 {
 1384         struct usb_config usb_config[1];
 1385         struct usb_device_request req;
 1386         union {
 1387                 struct usb_fs_complete *pcomp;
 1388                 struct usb_fs_start *pstart;
 1389                 struct usb_fs_stop *pstop;
 1390                 struct usb_fs_open *popen;
 1391                 struct usb_fs_close *pclose;
 1392                 struct usb_fs_clear_stall_sync *pstall;
 1393                 void   *addr;
 1394         }     u;
 1395         struct usb_endpoint *ep;
 1396         struct usb_endpoint_descriptor *ed;
 1397         int error = 0;
 1398         uint8_t iface_index;
 1399         uint8_t isread;
 1400         uint8_t ep_index;
 1401 
 1402         u.addr = addr;
 1403 
 1404         DPRINTFN(6, "cmd=0x%08lx\n", cmd);
 1405 
 1406         switch (cmd) {
 1407         case USB_FS_COMPLETE:
 1408                 mtx_lock(f->priv_mtx);
 1409                 error = ugen_fs_get_complete(f, &ep_index);
 1410                 mtx_unlock(f->priv_mtx);
 1411 
 1412                 if (error) {
 1413                         error = EBUSY;
 1414                         break;
 1415                 }
 1416                 u.pcomp->ep_index = ep_index;
 1417                 error = ugen_fs_copy_out(f, u.pcomp->ep_index);
 1418                 break;
 1419 
 1420         case USB_FS_START:
 1421                 error = ugen_fs_copy_in(f, u.pstart->ep_index);
 1422                 if (error) {
 1423                         break;
 1424                 }
 1425                 mtx_lock(f->priv_mtx);
 1426                 usbd_transfer_start(f->fs_xfer[u.pstart->ep_index]);
 1427                 mtx_unlock(f->priv_mtx);
 1428                 break;
 1429 
 1430         case USB_FS_STOP:
 1431                 if (u.pstop->ep_index >= f->fs_ep_max) {
 1432                         error = EINVAL;
 1433                         break;
 1434                 }
 1435                 mtx_lock(f->priv_mtx);
 1436                 usbd_transfer_stop(f->fs_xfer[u.pstop->ep_index]);
 1437                 mtx_unlock(f->priv_mtx);
 1438                 break;
 1439 
 1440         case USB_FS_OPEN:
 1441                 if (u.popen->ep_index >= f->fs_ep_max) {
 1442                         error = EINVAL;
 1443                         break;
 1444                 }
 1445                 if (f->fs_xfer[u.popen->ep_index] != NULL) {
 1446                         error = EBUSY;
 1447                         break;
 1448                 }
 1449                 if (u.popen->max_bufsize > USB_FS_MAX_BUFSIZE) {
 1450                         u.popen->max_bufsize = USB_FS_MAX_BUFSIZE;
 1451                 }
 1452                 if (u.popen->max_frames > USB_FS_MAX_FRAMES) {
 1453                         u.popen->max_frames = USB_FS_MAX_FRAMES;
 1454                         break;
 1455                 }
 1456                 if (u.popen->max_frames == 0) {
 1457                         error = EINVAL;
 1458                         break;
 1459                 }
 1460                 ep = usbd_get_ep_by_addr(f->udev, u.popen->ep_no);
 1461                 if (ep == NULL) {
 1462                         error = EINVAL;
 1463                         break;
 1464                 }
 1465                 ed = ep->edesc;
 1466                 if (ed == NULL) {
 1467                         error = ENXIO;
 1468                         break;
 1469                 }
 1470                 iface_index = ep->iface_index;
 1471 
 1472                 bzero(usb_config, sizeof(usb_config));
 1473 
 1474                 usb_config[0].type = ed->bmAttributes & UE_XFERTYPE;
 1475                 usb_config[0].endpoint = ed->bEndpointAddress & UE_ADDR;
 1476                 usb_config[0].direction = ed->bEndpointAddress & (UE_DIR_OUT | UE_DIR_IN);
 1477                 usb_config[0].interval = USB_DEFAULT_INTERVAL;
 1478                 usb_config[0].flags.proxy_buffer = 1;
 1479                 usb_config[0].callback = &ugen_ctrl_fs_callback;
 1480                 usb_config[0].timeout = 0;      /* no timeout */
 1481                 usb_config[0].frames = u.popen->max_frames;
 1482                 usb_config[0].bufsize = u.popen->max_bufsize;
 1483                 usb_config[0].usb_mode = USB_MODE_DUAL; /* both modes */
 1484 
 1485                 if (usb_config[0].type == UE_CONTROL) {
 1486                         if (f->udev->flags.usb_mode != USB_MODE_HOST) {
 1487                                 error = EINVAL;
 1488                                 break;
 1489                         }
 1490                 } else {
 1491 
 1492                         isread = ((usb_config[0].endpoint &
 1493                             (UE_DIR_IN | UE_DIR_OUT)) == UE_DIR_IN);
 1494 
 1495                         if (f->udev->flags.usb_mode != USB_MODE_HOST) {
 1496                                 isread = !isread;
 1497                         }
 1498                         /* check permissions */
 1499                         if (isread) {
 1500                                 if (!(fflags & FREAD)) {
 1501                                         error = EPERM;
 1502                                         break;
 1503                                 }
 1504                         } else {
 1505                                 if (!(fflags & FWRITE)) {
 1506                                         error = EPERM;
 1507                                         break;
 1508                                 }
 1509                         }
 1510                 }
 1511                 error = usbd_transfer_setup(f->udev, &iface_index,
 1512                     f->fs_xfer + u.popen->ep_index, usb_config, 1,
 1513                     f, f->priv_mtx);
 1514                 if (error == 0) {
 1515                         /* update maximums */
 1516                         u.popen->max_packet_length =
 1517                             f->fs_xfer[u.popen->ep_index]->max_frame_size;
 1518                         u.popen->max_bufsize =
 1519                             f->fs_xfer[u.popen->ep_index]->max_data_length;
 1520                         f->fs_xfer[u.popen->ep_index]->priv_fifo =
 1521                             ((uint8_t *)0) + u.popen->ep_index;
 1522                 } else {
 1523                         error = ENOMEM;
 1524                 }
 1525                 break;
 1526 
 1527         case USB_FS_CLOSE:
 1528                 if (u.pclose->ep_index >= f->fs_ep_max) {
 1529                         error = EINVAL;
 1530                         break;
 1531                 }
 1532                 if (f->fs_xfer[u.pclose->ep_index] == NULL) {
 1533                         error = EINVAL;
 1534                         break;
 1535                 }
 1536                 usbd_transfer_unsetup(f->fs_xfer + u.pclose->ep_index, 1);
 1537                 break;
 1538 
 1539         case USB_FS_CLEAR_STALL_SYNC:
 1540                 if (u.pstall->ep_index >= f->fs_ep_max) {
 1541                         error = EINVAL;
 1542                         break;
 1543                 }
 1544                 if (f->fs_xfer[u.pstall->ep_index] == NULL) {
 1545                         error = EINVAL;
 1546                         break;
 1547                 }
 1548                 if (f->udev->flags.usb_mode != USB_MODE_HOST) {
 1549                         error = EINVAL;
 1550                         break;
 1551                 }
 1552                 mtx_lock(f->priv_mtx);
 1553                 error = usbd_transfer_pending(f->fs_xfer[u.pstall->ep_index]);
 1554                 mtx_unlock(f->priv_mtx);
 1555 
 1556                 if (error) {
 1557                         return (EBUSY);
 1558                 }
 1559                 ep = f->fs_xfer[u.pstall->ep_index]->endpoint;
 1560 
 1561                 /* setup a clear-stall packet */
 1562                 req.bmRequestType = UT_WRITE_ENDPOINT;
 1563                 req.bRequest = UR_CLEAR_FEATURE;
 1564                 USETW(req.wValue, UF_ENDPOINT_HALT);
 1565                 req.wIndex[0] = ep->edesc->bEndpointAddress;
 1566                 req.wIndex[1] = 0;
 1567                 USETW(req.wLength, 0);
 1568 
 1569                 error = usbd_do_request(f->udev, NULL, &req, NULL);
 1570                 if (error == 0) {
 1571                         usbd_clear_data_toggle(f->udev, ep);
 1572                 } else {
 1573                         error = ENXIO;
 1574                 }
 1575                 break;
 1576 
 1577         default:
 1578                 error = ENOIOCTL;
 1579                 break;
 1580         }
 1581 
 1582         DPRINTFN(6, "error=%d\n", error);
 1583 
 1584         return (error);
 1585 }
 1586 
 1587 static int
 1588 ugen_set_short_xfer(struct usb_fifo *f, void *addr)
 1589 {
 1590         uint8_t t;
 1591 
 1592         if (*(int *)addr)
 1593                 t = 1;
 1594         else
 1595                 t = 0;
 1596 
 1597         if (f->flag_short == t) {
 1598                 /* same value like before - accept */
 1599                 return (0);
 1600         }
 1601         if (f->xfer[0] || f->xfer[1]) {
 1602                 /* cannot change this during transfer */
 1603                 return (EBUSY);
 1604         }
 1605         f->flag_short = t;
 1606         return (0);
 1607 }
 1608 
 1609 static int
 1610 ugen_set_timeout(struct usb_fifo *f, void *addr)
 1611 {
 1612         f->timeout = *(int *)addr;
 1613         if (f->timeout > 65535) {
 1614                 /* limit user input */
 1615                 f->timeout = 65535;
 1616         }
 1617         return (0);
 1618 }
 1619 
 1620 static int
 1621 ugen_get_frame_size(struct usb_fifo *f, void *addr)
 1622 {
 1623         if (f->xfer[0]) {
 1624                 *(int *)addr = f->xfer[0]->max_frame_size;
 1625         } else {
 1626                 return (EINVAL);
 1627         }
 1628         return (0);
 1629 }
 1630 
 1631 static int
 1632 ugen_set_buffer_size(struct usb_fifo *f, void *addr)
 1633 {
 1634         usb_frlength_t t;
 1635 
 1636         if (*(int *)addr < 0)
 1637                 t = 0;          /* use "wMaxPacketSize" */
 1638         else if (*(int *)addr < (256 * 1024))
 1639                 t = *(int *)addr;
 1640         else
 1641                 t = 256 * 1024;
 1642 
 1643         if (f->bufsize == t) {
 1644                 /* same value like before - accept */
 1645                 return (0);
 1646         }
 1647         if (f->xfer[0] || f->xfer[1]) {
 1648                 /* cannot change this during transfer */
 1649                 return (EBUSY);
 1650         }
 1651         f->bufsize = t;
 1652         return (0);
 1653 }
 1654 
 1655 static int
 1656 ugen_get_buffer_size(struct usb_fifo *f, void *addr)
 1657 {
 1658         *(int *)addr = f->bufsize;
 1659         return (0);
 1660 }
 1661 
 1662 static int
 1663 ugen_get_iface_desc(struct usb_fifo *f,
 1664     struct usb_interface_descriptor *idesc)
 1665 {
 1666         struct usb_interface *iface;
 1667 
 1668         iface = usbd_get_iface(f->udev, f->iface_index);
 1669         if (iface && iface->idesc) {
 1670                 *idesc = *(iface->idesc);
 1671         } else {
 1672                 return (EIO);
 1673         }
 1674         return (0);
 1675 }
 1676 
 1677 static int
 1678 ugen_get_endpoint_desc(struct usb_fifo *f,
 1679     struct usb_endpoint_descriptor *ed)
 1680 {
 1681         struct usb_endpoint *ep;
 1682 
 1683         ep = usb_fifo_softc(f);
 1684 
 1685         if (ep && ep->edesc) {
 1686                 *ed = *ep->edesc;
 1687         } else {
 1688                 return (EINVAL);
 1689         }
 1690         return (0);
 1691 }
 1692 
 1693 static int
 1694 ugen_set_power_mode(struct usb_fifo *f, int mode)
 1695 {
 1696         struct usb_device *udev = f->udev;
 1697         int err;
 1698         uint8_t old_mode;
 1699 
 1700         if ((udev == NULL) ||
 1701             (udev->parent_hub == NULL)) {
 1702                 return (EINVAL);
 1703         }
 1704         err = priv_check(curthread, PRIV_DRIVER);
 1705         if (err)
 1706                 return (err);
 1707 
 1708         /* get old power mode */
 1709         old_mode = udev->power_mode;
 1710 
 1711         /* if no change, then just return */
 1712         if (old_mode == mode)
 1713                 return (0);
 1714 
 1715         switch (mode) {
 1716         case USB_POWER_MODE_OFF:
 1717                 /* get the device unconfigured */
 1718                 err = ugen_set_config(f, USB_UNCONFIG_INDEX);
 1719                 if (err) {
 1720                         DPRINTFN(0, "Could not unconfigure "
 1721                             "device (ignored)\n");
 1722                 }
 1723 
 1724                 /* clear port enable */
 1725                 err = usbd_req_clear_port_feature(udev->parent_hub,
 1726                     NULL, udev->port_no, UHF_PORT_ENABLE);
 1727                 break;
 1728 
 1729         case USB_POWER_MODE_ON:
 1730         case USB_POWER_MODE_SAVE:
 1731                 break;
 1732 
 1733         case USB_POWER_MODE_RESUME:
 1734 #if USB_HAVE_POWERD
 1735                 /* let USB-powerd handle resume */
 1736                 USB_BUS_LOCK(udev->bus);
 1737                 udev->pwr_save.write_refs++;
 1738                 udev->pwr_save.last_xfer_time = ticks;
 1739                 USB_BUS_UNLOCK(udev->bus);
 1740 
 1741                 /* set new power mode */
 1742                 usbd_set_power_mode(udev, USB_POWER_MODE_SAVE);
 1743 
 1744                 /* wait for resume to complete */
 1745                 usb_pause_mtx(NULL, hz / 4);
 1746 
 1747                 /* clear write reference */
 1748                 USB_BUS_LOCK(udev->bus);
 1749                 udev->pwr_save.write_refs--;
 1750                 USB_BUS_UNLOCK(udev->bus);
 1751 #endif
 1752                 mode = USB_POWER_MODE_SAVE;
 1753                 break;
 1754 
 1755         case USB_POWER_MODE_SUSPEND:
 1756 #if USB_HAVE_POWERD
 1757                 /* let USB-powerd handle suspend */
 1758                 USB_BUS_LOCK(udev->bus);
 1759                 udev->pwr_save.last_xfer_time = ticks - (256 * hz);
 1760                 USB_BUS_UNLOCK(udev->bus);
 1761 #endif
 1762                 mode = USB_POWER_MODE_SAVE;
 1763                 break;
 1764 
 1765         default:
 1766                 return (EINVAL);
 1767         }
 1768 
 1769         if (err)
 1770                 return (ENXIO);         /* I/O failure */
 1771 
 1772         /* if we are powered off we need to re-enumerate first */
 1773         if (old_mode == USB_POWER_MODE_OFF) {
 1774                 if (udev->flags.usb_mode == USB_MODE_HOST) {
 1775                         if (udev->re_enumerate_wait == 0)
 1776                                 udev->re_enumerate_wait = 1;
 1777                 }
 1778                 /* set power mode will wake up the explore thread */
 1779         }
 1780 
 1781         /* set new power mode */
 1782         usbd_set_power_mode(udev, mode);
 1783 
 1784         return (0);                     /* success */
 1785 }
 1786 
 1787 static int
 1788 ugen_get_power_mode(struct usb_fifo *f)
 1789 {
 1790         struct usb_device *udev = f->udev;
 1791 
 1792         if (udev == NULL)
 1793                 return (USB_POWER_MODE_ON);
 1794 
 1795         return (udev->power_mode);
 1796 }
 1797 
 1798 static int
 1799 ugen_do_port_feature(struct usb_fifo *f, uint8_t port_no,
 1800     uint8_t set, uint16_t feature)
 1801 {
 1802         struct usb_device *udev = f->udev;
 1803         struct usb_hub *hub;
 1804         int err;
 1805 
 1806         err = priv_check(curthread, PRIV_DRIVER);
 1807         if (err) {
 1808                 return (err);
 1809         }
 1810         if (port_no == 0) {
 1811                 return (EINVAL);
 1812         }
 1813         if ((udev == NULL) ||
 1814             (udev->hub == NULL)) {
 1815                 return (EINVAL);
 1816         }
 1817         hub = udev->hub;
 1818 
 1819         if (port_no > hub->nports) {
 1820                 return (EINVAL);
 1821         }
 1822         if (set)
 1823                 err = usbd_req_set_port_feature(udev,
 1824                     NULL, port_no, feature);
 1825         else
 1826                 err = usbd_req_clear_port_feature(udev,
 1827                     NULL, port_no, feature);
 1828 
 1829         if (err)
 1830                 return (ENXIO);         /* failure */
 1831 
 1832         return (0);                     /* success */
 1833 }
 1834 
 1835 static int
 1836 ugen_iface_ioctl(struct usb_fifo *f, u_long cmd, void *addr, int fflags)
 1837 {
 1838         struct usb_fifo *f_rx;
 1839         struct usb_fifo *f_tx;
 1840         int error = 0;
 1841 
 1842         f_rx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_RX];
 1843         f_tx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_TX];
 1844 
 1845         switch (cmd) {
 1846         case USB_SET_RX_SHORT_XFER:
 1847                 if (fflags & FREAD) {
 1848                         error = ugen_set_short_xfer(f_rx, addr);
 1849                 } else {
 1850                         error = EINVAL;
 1851                 }
 1852                 break;
 1853 
 1854         case USB_SET_TX_FORCE_SHORT:
 1855                 if (fflags & FWRITE) {
 1856                         error = ugen_set_short_xfer(f_tx, addr);
 1857                 } else {
 1858                         error = EINVAL;
 1859                 }
 1860                 break;
 1861 
 1862         case USB_SET_RX_TIMEOUT:
 1863                 if (fflags & FREAD) {
 1864                         error = ugen_set_timeout(f_rx, addr);
 1865                 } else {
 1866                         error = EINVAL;
 1867                 }
 1868                 break;
 1869 
 1870         case USB_SET_TX_TIMEOUT:
 1871                 if (fflags & FWRITE) {
 1872                         error = ugen_set_timeout(f_tx, addr);
 1873                 } else {
 1874                         error = EINVAL;
 1875                 }
 1876                 break;
 1877 
 1878         case USB_GET_RX_FRAME_SIZE:
 1879                 if (fflags & FREAD) {
 1880                         error = ugen_get_frame_size(f_rx, addr);
 1881                 } else {
 1882                         error = EINVAL;
 1883                 }
 1884                 break;
 1885 
 1886         case USB_GET_TX_FRAME_SIZE:
 1887                 if (fflags & FWRITE) {
 1888                         error = ugen_get_frame_size(f_tx, addr);
 1889                 } else {
 1890                         error = EINVAL;
 1891                 }
 1892                 break;
 1893 
 1894         case USB_SET_RX_BUFFER_SIZE:
 1895                 if (fflags & FREAD) {
 1896                         error = ugen_set_buffer_size(f_rx, addr);
 1897                 } else {
 1898                         error = EINVAL;
 1899                 }
 1900                 break;
 1901 
 1902         case USB_SET_TX_BUFFER_SIZE:
 1903                 if (fflags & FWRITE) {
 1904                         error = ugen_set_buffer_size(f_tx, addr);
 1905                 } else {
 1906                         error = EINVAL;
 1907                 }
 1908                 break;
 1909 
 1910         case USB_GET_RX_BUFFER_SIZE:
 1911                 if (fflags & FREAD) {
 1912                         error = ugen_get_buffer_size(f_rx, addr);
 1913                 } else {
 1914                         error = EINVAL;
 1915                 }
 1916                 break;
 1917 
 1918         case USB_GET_TX_BUFFER_SIZE:
 1919                 if (fflags & FWRITE) {
 1920                         error = ugen_get_buffer_size(f_tx, addr);
 1921                 } else {
 1922                         error = EINVAL;
 1923                 }
 1924                 break;
 1925 
 1926         case USB_GET_RX_INTERFACE_DESC:
 1927                 if (fflags & FREAD) {
 1928                         error = ugen_get_iface_desc(f_rx, addr);
 1929                 } else {
 1930                         error = EINVAL;
 1931                 }
 1932                 break;
 1933 
 1934         case USB_GET_TX_INTERFACE_DESC:
 1935                 if (fflags & FWRITE) {
 1936                         error = ugen_get_iface_desc(f_tx, addr);
 1937                 } else {
 1938                         error = EINVAL;
 1939                 }
 1940                 break;
 1941 
 1942         case USB_GET_RX_ENDPOINT_DESC:
 1943                 if (fflags & FREAD) {
 1944                         error = ugen_get_endpoint_desc(f_rx, addr);
 1945                 } else {
 1946                         error = EINVAL;
 1947                 }
 1948                 break;
 1949 
 1950         case USB_GET_TX_ENDPOINT_DESC:
 1951                 if (fflags & FWRITE) {
 1952                         error = ugen_get_endpoint_desc(f_tx, addr);
 1953                 } else {
 1954                         error = EINVAL;
 1955                 }
 1956                 break;
 1957 
 1958         case USB_SET_RX_STALL_FLAG:
 1959                 if ((fflags & FREAD) && (*(int *)addr)) {
 1960                         f_rx->flag_stall = 1;
 1961                 }
 1962                 break;
 1963 
 1964         case USB_SET_TX_STALL_FLAG:
 1965                 if ((fflags & FWRITE) && (*(int *)addr)) {
 1966                         f_tx->flag_stall = 1;
 1967                 }
 1968                 break;
 1969 
 1970         default:
 1971                 error = ENOIOCTL;
 1972                 break;
 1973         }
 1974         return (error);
 1975 }
 1976 
 1977 static int
 1978 ugen_ioctl_post(struct usb_fifo *f, u_long cmd, void *addr, int fflags)
 1979 {
 1980         union {
 1981                 struct usb_interface_descriptor *idesc;
 1982                 struct usb_alt_interface *ai;
 1983                 struct usb_device_descriptor *ddesc;
 1984                 struct usb_config_descriptor *cdesc;
 1985                 struct usb_device_stats *stat;
 1986                 struct usb_fs_init *pinit;
 1987                 struct usb_fs_uninit *puninit;
 1988                 uint32_t *ptime;
 1989                 void   *addr;
 1990                 int    *pint;
 1991         }     u;
 1992         struct usb_device_descriptor *dtemp;
 1993         struct usb_config_descriptor *ctemp;
 1994         struct usb_interface *iface;
 1995         int error = 0;
 1996         uint8_t n;
 1997 
 1998         u.addr = addr;
 1999 
 2000         DPRINTFN(6, "cmd=0x%08lx\n", cmd);
 2001 
 2002         switch (cmd) {
 2003         case USB_DISCOVER:
 2004                 usb_needs_explore_all();
 2005                 break;
 2006 
 2007         case USB_SETDEBUG:
 2008                 if (!(fflags & FWRITE)) {
 2009                         error = EPERM;
 2010                         break;
 2011                 }
 2012                 usb_debug = *(int *)addr;
 2013                 break;
 2014 
 2015         case USB_GET_CONFIG:
 2016                 *(int *)addr = f->udev->curr_config_index;
 2017                 break;
 2018 
 2019         case USB_SET_CONFIG:
 2020                 if (!(fflags & FWRITE)) {
 2021                         error = EPERM;
 2022                         break;
 2023                 }
 2024                 error = ugen_set_config(f, *(int *)addr);
 2025                 break;
 2026 
 2027         case USB_GET_ALTINTERFACE:
 2028                 iface = usbd_get_iface(f->udev,
 2029                     u.ai->uai_interface_index);
 2030                 if (iface && iface->idesc) {
 2031                         u.ai->uai_alt_index = iface->alt_index;
 2032                 } else {
 2033                         error = EINVAL;
 2034                 }
 2035                 break;
 2036 
 2037         case USB_SET_ALTINTERFACE:
 2038                 if (!(fflags & FWRITE)) {
 2039                         error = EPERM;
 2040                         break;
 2041                 }
 2042                 error = ugen_set_interface(f,
 2043                     u.ai->uai_interface_index, u.ai->uai_alt_index);
 2044                 break;
 2045 
 2046         case USB_GET_DEVICE_DESC:
 2047                 dtemp = usbd_get_device_descriptor(f->udev);
 2048                 if (!dtemp) {
 2049                         error = EIO;
 2050                         break;
 2051                 }
 2052                 *u.ddesc = *dtemp;
 2053                 break;
 2054 
 2055         case USB_GET_CONFIG_DESC:
 2056                 ctemp = usbd_get_config_descriptor(f->udev);
 2057                 if (!ctemp) {
 2058                         error = EIO;
 2059                         break;
 2060                 }
 2061                 *u.cdesc = *ctemp;
 2062                 break;
 2063 
 2064         case USB_GET_FULL_DESC:
 2065                 error = ugen_get_cdesc(f, addr);
 2066                 break;
 2067 
 2068         case USB_GET_STRING_DESC:
 2069                 error = ugen_get_sdesc(f, addr);
 2070                 break;
 2071 
 2072         case USB_GET_IFACE_DRIVER:
 2073                 error = ugen_get_iface_driver(f, addr);
 2074                 break;
 2075 
 2076         case USB_REQUEST:
 2077         case USB_DO_REQUEST:
 2078                 if (!(fflags & FWRITE)) {
 2079                         error = EPERM;
 2080                         break;
 2081                 }
 2082                 error = ugen_do_request(f, addr);
 2083                 break;
 2084 
 2085         case USB_DEVICEINFO:
 2086         case USB_GET_DEVICEINFO:
 2087                 error = usb_gen_fill_deviceinfo(f, addr);
 2088                 break;
 2089 
 2090         case USB_DEVICESTATS:
 2091                 for (n = 0; n != 4; n++) {
 2092 
 2093                         u.stat->uds_requests_fail[n] =
 2094                             f->udev->bus->stats_err.uds_requests[n];
 2095 
 2096                         u.stat->uds_requests_ok[n] =
 2097                             f->udev->bus->stats_ok.uds_requests[n];
 2098                 }
 2099                 break;
 2100 
 2101         case USB_DEVICEENUMERATE:
 2102                 error = ugen_re_enumerate(f);
 2103                 break;
 2104 
 2105         case USB_GET_PLUGTIME:
 2106                 *u.ptime = f->udev->plugtime;
 2107                 break;
 2108 
 2109         case USB_CLAIM_INTERFACE:
 2110         case USB_RELEASE_INTERFACE:
 2111                 /* TODO */
 2112                 break;
 2113 
 2114         case USB_IFACE_DRIVER_ACTIVE:
 2115 
 2116                 n = *u.pint & 0xFF;
 2117 
 2118                 iface = usbd_get_iface(f->udev, n);
 2119 
 2120                 if (iface && iface->subdev)
 2121                         error = 0;
 2122                 else
 2123                         error = ENXIO;
 2124                 break;
 2125 
 2126         case USB_IFACE_DRIVER_DETACH:
 2127 
 2128                 error = priv_check(curthread, PRIV_DRIVER);
 2129 
 2130                 if (error)
 2131                         break;
 2132 
 2133                 n = *u.pint & 0xFF;
 2134 
 2135                 if (n == USB_IFACE_INDEX_ANY) {
 2136                         error = EINVAL;
 2137                         break;
 2138                 }
 2139 
 2140                 usb_detach_device(f->udev, n, 0);
 2141                 break;
 2142 
 2143         case USB_SET_POWER_MODE:
 2144                 error = ugen_set_power_mode(f, *u.pint);
 2145                 break;
 2146 
 2147         case USB_GET_POWER_MODE:
 2148                 *u.pint = ugen_get_power_mode(f);
 2149                 break;
 2150 
 2151         case USB_SET_PORT_ENABLE:
 2152                 error = ugen_do_port_feature(f,
 2153                     *u.pint, 1, UHF_PORT_ENABLE);
 2154                 break;
 2155 
 2156         case USB_SET_PORT_DISABLE:
 2157                 error = ugen_do_port_feature(f,
 2158                     *u.pint, 0, UHF_PORT_ENABLE);
 2159                 break;
 2160 
 2161         case USB_FS_INIT:
 2162                 /* verify input parameters */
 2163                 if (u.pinit->pEndpoints == NULL) {
 2164                         error = EINVAL;
 2165                         break;
 2166                 }
 2167                 if (u.pinit->ep_index_max > 127) {
 2168                         error = EINVAL;
 2169                         break;
 2170                 }
 2171                 if (u.pinit->ep_index_max == 0) {
 2172                         error = EINVAL;
 2173                         break;
 2174                 }
 2175                 if (f->fs_xfer != NULL) {
 2176                         error = EBUSY;
 2177                         break;
 2178                 }
 2179                 if (f->dev_ep_index != 0) {
 2180                         error = EINVAL;
 2181                         break;
 2182                 }
 2183                 if (ugen_fifo_in_use(f, fflags)) {
 2184                         error = EBUSY;
 2185                         break;
 2186                 }
 2187                 error = usb_fifo_alloc_buffer(f, 1, u.pinit->ep_index_max);
 2188                 if (error) {
 2189                         break;
 2190                 }
 2191                 f->fs_xfer = malloc(sizeof(f->fs_xfer[0]) *
 2192                     u.pinit->ep_index_max, M_USB, M_WAITOK | M_ZERO);
 2193                 if (f->fs_xfer == NULL) {
 2194                         usb_fifo_free_buffer(f);
 2195                         error = ENOMEM;
 2196                         break;
 2197                 }
 2198                 f->fs_ep_max = u.pinit->ep_index_max;
 2199                 f->fs_ep_ptr = u.pinit->pEndpoints;
 2200                 break;
 2201 
 2202         case USB_FS_UNINIT:
 2203                 if (u.puninit->dummy != 0) {
 2204                         error = EINVAL;
 2205                         break;
 2206                 }
 2207                 error = ugen_fs_uninit(f);
 2208                 break;
 2209 
 2210         default:
 2211                 mtx_lock(f->priv_mtx);
 2212                 error = ugen_iface_ioctl(f, cmd, addr, fflags);
 2213                 mtx_unlock(f->priv_mtx);
 2214                 break;
 2215         }
 2216         DPRINTFN(6, "error=%d\n", error);
 2217         return (error);
 2218 }
 2219 
 2220 static void
 2221 ugen_ctrl_fs_callback(struct usb_xfer *xfer, usb_error_t error)
 2222 {
 2223         ;                               /* workaround for a bug in "indent" */
 2224 
 2225         DPRINTF("st=%u alen=%u aframes=%u\n",
 2226             USB_GET_STATE(xfer), xfer->actlen, xfer->aframes);
 2227 
 2228         switch (USB_GET_STATE(xfer)) {
 2229         case USB_ST_SETUP:
 2230                 usbd_transfer_submit(xfer);
 2231                 break;
 2232         default:
 2233                 ugen_fs_set_complete(xfer->priv_sc, USB_P2U(xfer->priv_fifo));
 2234                 break;
 2235         }
 2236 }
 2237 #endif  /* USB_HAVE_UGEN */
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FreeBSD/Linux Kernel Cross Reference sys/dev/usb/usb_generic.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/usb_generic.c
