usb_generic.c

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    1 /* $FreeBSD: releng/8.1/sys/dev/usb/usb_generic.c 208221 2010-05-17 23:45:31Z 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, udev->serial, sizeof(di->udi_serial));
  829         strlcpy(di->udi_vendor, udev->manufacturer, sizeof(di->udi_vendor));
  830         strlcpy(di->udi_product, udev->product, 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         /* get the device unconfigured */
  955         error = ugen_set_config(f, USB_UNCONFIG_INDEX);
  956         if (error) {
  957                 return (error);
  958         }
  959         /* do a bus-reset */
  960         mtx_lock(f->priv_mtx);
  961         error = usbd_req_re_enumerate(udev, f->priv_mtx);
  962         mtx_unlock(f->priv_mtx);
  963 
  964         if (error) {
  965                 return (ENXIO);
  966         }
  967         /* restore configuration to index 0 */
  968         error = ugen_set_config(f, 0);
  969         if (error) {
  970                 return (error);
  971         }
  972         return (0);
  973 }
  974 
  975 int
  976 ugen_fs_uninit(struct usb_fifo *f)
  977 {
  978         if (f->fs_xfer == NULL) {
  979                 return (EINVAL);
  980         }
  981         usbd_transfer_unsetup(f->fs_xfer, f->fs_ep_max);
  982         free(f->fs_xfer, M_USB);
  983         f->fs_xfer = NULL;
  984         f->fs_ep_max = 0;
  985         f->fs_ep_ptr = NULL;
  986         f->flag_iscomplete = 0;
  987         usb_fifo_free_buffer(f);
  988         return (0);
  989 }
  990 
  991 static uint8_t
  992 ugen_fs_get_complete(struct usb_fifo *f, uint8_t *pindex)
  993 {
  994         struct usb_mbuf *m;
  995 
  996         USB_IF_DEQUEUE(&f->used_q, m);
  997 
  998         if (m) {
  999                 *pindex = *((uint8_t *)(m->cur_data_ptr));
 1000 
 1001                 USB_IF_ENQUEUE(&f->free_q, m);
 1002 
 1003                 return (0);             /* success */
 1004         } else {
 1005 
 1006                 *pindex = 0;            /* fix compiler warning */
 1007 
 1008                 f->flag_iscomplete = 0;
 1009         }
 1010         return (1);                     /* failure */
 1011 }
 1012 
 1013 static void
 1014 ugen_fs_set_complete(struct usb_fifo *f, uint8_t index)
 1015 {
 1016         struct usb_mbuf *m;
 1017 
 1018         USB_IF_DEQUEUE(&f->free_q, m);
 1019 
 1020         if (m == NULL) {
 1021                 /* can happen during close */
 1022                 DPRINTF("out of buffers\n");
 1023                 return;
 1024         }
 1025         USB_MBUF_RESET(m);
 1026 
 1027         *((uint8_t *)(m->cur_data_ptr)) = index;
 1028 
 1029         USB_IF_ENQUEUE(&f->used_q, m);
 1030 
 1031         f->flag_iscomplete = 1;
 1032 
 1033         usb_fifo_wakeup(f);
 1034 }
 1035 
 1036 static int
 1037 ugen_fs_copy_in(struct usb_fifo *f, uint8_t ep_index)
 1038 {
 1039         struct usb_device_request *req;
 1040         struct usb_xfer *xfer;
 1041         struct usb_fs_endpoint fs_ep;
 1042         void *uaddr;                    /* userland pointer */
 1043         void *kaddr;
 1044         usb_frlength_t offset;
 1045         usb_frlength_t rem;
 1046         usb_frcount_t n;
 1047         uint32_t length;
 1048         int error;
 1049         uint8_t isread;
 1050 
 1051         if (ep_index >= f->fs_ep_max) {
 1052                 return (EINVAL);
 1053         }
 1054         xfer = f->fs_xfer[ep_index];
 1055         if (xfer == NULL) {
 1056                 return (EINVAL);
 1057         }
 1058         mtx_lock(f->priv_mtx);
 1059         if (usbd_transfer_pending(xfer)) {
 1060                 mtx_unlock(f->priv_mtx);
 1061                 return (EBUSY);         /* should not happen */
 1062         }
 1063         mtx_unlock(f->priv_mtx);
 1064 
 1065         error = copyin(f->fs_ep_ptr +
 1066             ep_index, &fs_ep, sizeof(fs_ep));
 1067         if (error) {
 1068                 return (error);
 1069         }
 1070         /* security checks */
 1071 
 1072         if (fs_ep.nFrames > xfer->max_frame_count) {
 1073                 xfer->error = USB_ERR_INVAL;
 1074                 goto complete;
 1075         }
 1076         if (fs_ep.nFrames == 0) {
 1077                 xfer->error = USB_ERR_INVAL;
 1078                 goto complete;
 1079         }
 1080         error = copyin(fs_ep.ppBuffer,
 1081             &uaddr, sizeof(uaddr));
 1082         if (error) {
 1083                 return (error);
 1084         }
 1085         /* reset first frame */
 1086         usbd_xfer_set_frame_offset(xfer, 0, 0);
 1087 
 1088         if (xfer->flags_int.control_xfr) {
 1089 
 1090                 req = xfer->frbuffers[0].buffer;
 1091 
 1092                 error = copyin(fs_ep.pLength,
 1093                     &length, sizeof(length));
 1094                 if (error) {
 1095                         return (error);
 1096                 }
 1097                 if (length != sizeof(*req)) {
 1098                         xfer->error = USB_ERR_INVAL;
 1099                         goto complete;
 1100                 }
 1101                 if (length != 0) {
 1102                         error = copyin(uaddr, req, length);
 1103                         if (error) {
 1104                                 return (error);
 1105                         }
 1106                 }
 1107                 if (ugen_check_request(f->udev, req)) {
 1108                         xfer->error = USB_ERR_INVAL;
 1109                         goto complete;
 1110                 }
 1111                 usbd_xfer_set_frame_len(xfer, 0, length);
 1112 
 1113                 /* Host mode only ! */
 1114                 if ((req->bmRequestType &
 1115                     (UT_READ | UT_WRITE)) == UT_READ) {
 1116                         isread = 1;
 1117                 } else {
 1118                         isread = 0;
 1119                 }
 1120                 n = 1;
 1121                 offset = sizeof(*req);
 1122 
 1123         } else {
 1124                 /* Device and Host mode */
 1125                 if (USB_GET_DATA_ISREAD(xfer)) {
 1126                         isread = 1;
 1127                 } else {
 1128                         isread = 0;
 1129                 }
 1130                 n = 0;
 1131                 offset = 0;
 1132         }
 1133 
 1134         rem = usbd_xfer_max_len(xfer);
 1135         xfer->nframes = fs_ep.nFrames;
 1136         xfer->timeout = fs_ep.timeout;
 1137         if (xfer->timeout > 65535) {
 1138                 xfer->timeout = 65535;
 1139         }
 1140         if (fs_ep.flags & USB_FS_FLAG_SINGLE_SHORT_OK)
 1141                 xfer->flags.short_xfer_ok = 1;
 1142         else
 1143                 xfer->flags.short_xfer_ok = 0;
 1144 
 1145         if (fs_ep.flags & USB_FS_FLAG_MULTI_SHORT_OK)
 1146                 xfer->flags.short_frames_ok = 1;
 1147         else
 1148                 xfer->flags.short_frames_ok = 0;
 1149 
 1150         if (fs_ep.flags & USB_FS_FLAG_FORCE_SHORT)
 1151                 xfer->flags.force_short_xfer = 1;
 1152         else
 1153                 xfer->flags.force_short_xfer = 0;
 1154 
 1155         if (fs_ep.flags & USB_FS_FLAG_CLEAR_STALL)
 1156                 usbd_xfer_set_stall(xfer);
 1157         else
 1158                 xfer->flags.stall_pipe = 0;
 1159 
 1160         for (; n != xfer->nframes; n++) {
 1161 
 1162                 error = copyin(fs_ep.pLength + n,
 1163                     &length, sizeof(length));
 1164                 if (error) {
 1165                         break;
 1166                 }
 1167                 usbd_xfer_set_frame_len(xfer, n, length);
 1168 
 1169                 if (length > rem) {
 1170                         xfer->error = USB_ERR_INVAL;
 1171                         goto complete;
 1172                 }
 1173                 rem -= length;
 1174 
 1175                 if (!isread) {
 1176 
 1177                         /* we need to know the source buffer */
 1178                         error = copyin(fs_ep.ppBuffer + n,
 1179                             &uaddr, sizeof(uaddr));
 1180                         if (error) {
 1181                                 break;
 1182                         }
 1183                         if (xfer->flags_int.isochronous_xfr) {
 1184                                 /* get kernel buffer address */
 1185                                 kaddr = xfer->frbuffers[0].buffer;
 1186                                 kaddr = USB_ADD_BYTES(kaddr, offset);
 1187                         } else {
 1188                                 /* set current frame offset */
 1189                                 usbd_xfer_set_frame_offset(xfer, offset, n);
 1190 
 1191                                 /* get kernel buffer address */
 1192                                 kaddr = xfer->frbuffers[n].buffer;
 1193                         }
 1194 
 1195                         /* move data */
 1196                         error = copyin(uaddr, kaddr, length);
 1197                         if (error) {
 1198                                 break;
 1199                         }
 1200                 }
 1201                 offset += length;
 1202         }
 1203         return (error);
 1204 
 1205 complete:
 1206         mtx_lock(f->priv_mtx);
 1207         ugen_fs_set_complete(f, ep_index);
 1208         mtx_unlock(f->priv_mtx);
 1209         return (0);
 1210 }
 1211 
 1212 static int
 1213 ugen_fs_copy_out(struct usb_fifo *f, uint8_t ep_index)
 1214 {
 1215         struct usb_device_request *req;
 1216         struct usb_xfer *xfer;
 1217         struct usb_fs_endpoint fs_ep;
 1218         struct usb_fs_endpoint *fs_ep_uptr;     /* userland ptr */
 1219         void *uaddr;                    /* userland ptr */
 1220         void *kaddr;
 1221         usb_frlength_t offset;
 1222         usb_frlength_t rem;
 1223         usb_frcount_t n;
 1224         uint32_t length;
 1225         uint32_t temp;
 1226         int error;
 1227         uint8_t isread;
 1228 
 1229         if (ep_index >= f->fs_ep_max)
 1230                 return (EINVAL);
 1231 
 1232         xfer = f->fs_xfer[ep_index];
 1233         if (xfer == NULL)
 1234                 return (EINVAL);
 1235 
 1236         mtx_lock(f->priv_mtx);
 1237         if (usbd_transfer_pending(xfer)) {
 1238                 mtx_unlock(f->priv_mtx);
 1239                 return (EBUSY);         /* should not happen */
 1240         }
 1241         mtx_unlock(f->priv_mtx);
 1242 
 1243         fs_ep_uptr = f->fs_ep_ptr + ep_index;
 1244         error = copyin(fs_ep_uptr, &fs_ep, sizeof(fs_ep));
 1245         if (error) {
 1246                 return (error);
 1247         }
 1248         fs_ep.status = xfer->error;
 1249         fs_ep.aFrames = xfer->aframes;
 1250         fs_ep.isoc_time_complete = xfer->isoc_time_complete;
 1251         if (xfer->error) {
 1252                 goto complete;
 1253         }
 1254         if (xfer->flags_int.control_xfr) {
 1255                 req = xfer->frbuffers[0].buffer;
 1256 
 1257                 /* Host mode only ! */
 1258                 if ((req->bmRequestType & (UT_READ | UT_WRITE)) == UT_READ) {
 1259                         isread = 1;
 1260                 } else {
 1261                         isread = 0;
 1262                 }
 1263                 if (xfer->nframes == 0)
 1264                         n = 0;          /* should never happen */
 1265                 else
 1266                         n = 1;
 1267         } else {
 1268                 /* Device and Host mode */
 1269                 if (USB_GET_DATA_ISREAD(xfer)) {
 1270                         isread = 1;
 1271                 } else {
 1272                         isread = 0;
 1273                 }
 1274                 n = 0;
 1275         }
 1276 
 1277         /* Update lengths and copy out data */
 1278 
 1279         rem = usbd_xfer_max_len(xfer);
 1280         offset = 0;
 1281 
 1282         for (; n != xfer->nframes; n++) {
 1283 
 1284                 /* get initial length into "temp" */
 1285                 error = copyin(fs_ep.pLength + n,
 1286                     &temp, sizeof(temp));
 1287                 if (error) {
 1288                         return (error);
 1289                 }
 1290                 if (temp > rem) {
 1291                         /* the userland length has been corrupted */
 1292                         DPRINTF("corrupt userland length "
 1293                             "%u > %u\n", temp, rem);
 1294                         fs_ep.status = USB_ERR_INVAL;
 1295                         goto complete;
 1296                 }
 1297                 rem -= temp;
 1298 
 1299                 /* get actual transfer length */
 1300                 length = xfer->frlengths[n];
 1301                 if (length > temp) {
 1302                         /* data overflow */
 1303                         fs_ep.status = USB_ERR_INVAL;
 1304                         DPRINTF("data overflow %u > %u\n",
 1305                             length, temp);
 1306                         goto complete;
 1307                 }
 1308                 if (isread) {
 1309 
 1310                         /* we need to know the destination buffer */
 1311                         error = copyin(fs_ep.ppBuffer + n,
 1312                             &uaddr, sizeof(uaddr));
 1313                         if (error) {
 1314                                 return (error);
 1315                         }
 1316                         if (xfer->flags_int.isochronous_xfr) {
 1317                                 /* only one frame buffer */
 1318                                 kaddr = USB_ADD_BYTES(
 1319                                     xfer->frbuffers[0].buffer, offset);
 1320                         } else {
 1321                                 /* multiple frame buffers */
 1322                                 kaddr = xfer->frbuffers[n].buffer;
 1323                         }
 1324 
 1325                         /* move data */
 1326                         error = copyout(kaddr, uaddr, length);
 1327                         if (error) {
 1328                                 return (error);
 1329                         }
 1330                 }
 1331                 /*
 1332                  * Update offset according to initial length, which is
 1333                  * needed by isochronous transfers!
 1334                  */
 1335                 offset += temp;
 1336 
 1337                 /* update length */
 1338                 error = copyout(&length,
 1339                     fs_ep.pLength + n, sizeof(length));
 1340                 if (error) {
 1341                         return (error);
 1342                 }
 1343         }
 1344 
 1345 complete:
 1346         /* update "aFrames" */
 1347         error = copyout(&fs_ep.aFrames, &fs_ep_uptr->aFrames,
 1348             sizeof(fs_ep.aFrames));
 1349         if (error)
 1350                 goto done;
 1351 
 1352         /* update "isoc_time_complete" */
 1353         error = copyout(&fs_ep.isoc_time_complete,
 1354             &fs_ep_uptr->isoc_time_complete,
 1355             sizeof(fs_ep.isoc_time_complete));
 1356         if (error)
 1357                 goto done;
 1358         /* update "status" */
 1359         error = copyout(&fs_ep.status, &fs_ep_uptr->status,
 1360             sizeof(fs_ep.status));
 1361 done:
 1362         return (error);
 1363 }
 1364 
 1365 static uint8_t
 1366 ugen_fifo_in_use(struct usb_fifo *f, int fflags)
 1367 {
 1368         struct usb_fifo *f_rx;
 1369         struct usb_fifo *f_tx;
 1370 
 1371         f_rx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_RX];
 1372         f_tx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_TX];
 1373 
 1374         if ((fflags & FREAD) && f_rx &&
 1375             (f_rx->xfer[0] || f_rx->xfer[1])) {
 1376                 return (1);             /* RX FIFO in use */
 1377         }
 1378         if ((fflags & FWRITE) && f_tx &&
 1379             (f_tx->xfer[0] || f_tx->xfer[1])) {
 1380                 return (1);             /* TX FIFO in use */
 1381         }
 1382         return (0);                     /* not in use */
 1383 }
 1384 
 1385 static int
 1386 ugen_ioctl(struct usb_fifo *f, u_long cmd, void *addr, int fflags)
 1387 {
 1388         struct usb_config usb_config[1];
 1389         struct usb_device_request req;
 1390         union {
 1391                 struct usb_fs_complete *pcomp;
 1392                 struct usb_fs_start *pstart;
 1393                 struct usb_fs_stop *pstop;
 1394                 struct usb_fs_open *popen;
 1395                 struct usb_fs_close *pclose;
 1396                 struct usb_fs_clear_stall_sync *pstall;
 1397                 void   *addr;
 1398         }     u;
 1399         struct usb_endpoint *ep;
 1400         struct usb_endpoint_descriptor *ed;
 1401         int error = 0;
 1402         uint8_t iface_index;
 1403         uint8_t isread;
 1404         uint8_t ep_index;
 1405 
 1406         u.addr = addr;
 1407 
 1408         DPRINTFN(6, "cmd=0x%08lx\n", cmd);
 1409 
 1410         switch (cmd) {
 1411         case USB_FS_COMPLETE:
 1412                 mtx_lock(f->priv_mtx);
 1413                 error = ugen_fs_get_complete(f, &ep_index);
 1414                 mtx_unlock(f->priv_mtx);
 1415 
 1416                 if (error) {
 1417                         error = EBUSY;
 1418                         break;
 1419                 }
 1420                 u.pcomp->ep_index = ep_index;
 1421                 error = ugen_fs_copy_out(f, u.pcomp->ep_index);
 1422                 break;
 1423 
 1424         case USB_FS_START:
 1425                 error = ugen_fs_copy_in(f, u.pstart->ep_index);
 1426                 if (error) {
 1427                         break;
 1428                 }
 1429                 mtx_lock(f->priv_mtx);
 1430                 usbd_transfer_start(f->fs_xfer[u.pstart->ep_index]);
 1431                 mtx_unlock(f->priv_mtx);
 1432                 break;
 1433 
 1434         case USB_FS_STOP:
 1435                 if (u.pstop->ep_index >= f->fs_ep_max) {
 1436                         error = EINVAL;
 1437                         break;
 1438                 }
 1439                 mtx_lock(f->priv_mtx);
 1440                 usbd_transfer_stop(f->fs_xfer[u.pstop->ep_index]);
 1441                 mtx_unlock(f->priv_mtx);
 1442                 break;
 1443 
 1444         case USB_FS_OPEN:
 1445                 if (u.popen->ep_index >= f->fs_ep_max) {
 1446                         error = EINVAL;
 1447                         break;
 1448                 }
 1449                 if (f->fs_xfer[u.popen->ep_index] != NULL) {
 1450                         error = EBUSY;
 1451                         break;
 1452                 }
 1453                 if (u.popen->max_bufsize > USB_FS_MAX_BUFSIZE) {
 1454                         u.popen->max_bufsize = USB_FS_MAX_BUFSIZE;
 1455                 }
 1456                 if (u.popen->max_frames > USB_FS_MAX_FRAMES) {
 1457                         u.popen->max_frames = USB_FS_MAX_FRAMES;
 1458                         break;
 1459                 }
 1460                 if (u.popen->max_frames == 0) {
 1461                         error = EINVAL;
 1462                         break;
 1463                 }
 1464                 ep = usbd_get_ep_by_addr(f->udev, u.popen->ep_no);
 1465                 if (ep == NULL) {
 1466                         error = EINVAL;
 1467                         break;
 1468                 }
 1469                 ed = ep->edesc;
 1470                 if (ed == NULL) {
 1471                         error = ENXIO;
 1472                         break;
 1473                 }
 1474                 iface_index = ep->iface_index;
 1475 
 1476                 bzero(usb_config, sizeof(usb_config));
 1477 
 1478                 usb_config[0].type = ed->bmAttributes & UE_XFERTYPE;
 1479                 usb_config[0].endpoint = ed->bEndpointAddress & UE_ADDR;
 1480                 usb_config[0].direction = ed->bEndpointAddress & (UE_DIR_OUT | UE_DIR_IN);
 1481                 usb_config[0].interval = USB_DEFAULT_INTERVAL;
 1482                 usb_config[0].flags.proxy_buffer = 1;
 1483                 usb_config[0].callback = &ugen_ctrl_fs_callback;
 1484                 usb_config[0].timeout = 0;      /* no timeout */
 1485                 usb_config[0].frames = u.popen->max_frames;
 1486                 usb_config[0].bufsize = u.popen->max_bufsize;
 1487                 usb_config[0].usb_mode = USB_MODE_DUAL; /* both modes */
 1488 
 1489                 if (usb_config[0].type == UE_CONTROL) {
 1490                         if (f->udev->flags.usb_mode != USB_MODE_HOST) {
 1491                                 error = EINVAL;
 1492                                 break;
 1493                         }
 1494                 } else {
 1495 
 1496                         isread = ((usb_config[0].endpoint &
 1497                             (UE_DIR_IN | UE_DIR_OUT)) == UE_DIR_IN);
 1498 
 1499                         if (f->udev->flags.usb_mode != USB_MODE_HOST) {
 1500                                 isread = !isread;
 1501                         }
 1502                         /* check permissions */
 1503                         if (isread) {
 1504                                 if (!(fflags & FREAD)) {
 1505                                         error = EPERM;
 1506                                         break;
 1507                                 }
 1508                         } else {
 1509                                 if (!(fflags & FWRITE)) {
 1510                                         error = EPERM;
 1511                                         break;
 1512                                 }
 1513                         }
 1514                 }
 1515                 error = usbd_transfer_setup(f->udev, &iface_index,
 1516                     f->fs_xfer + u.popen->ep_index, usb_config, 1,
 1517                     f, f->priv_mtx);
 1518                 if (error == 0) {
 1519                         /* update maximums */
 1520                         u.popen->max_packet_length =
 1521                             f->fs_xfer[u.popen->ep_index]->max_frame_size;
 1522                         u.popen->max_bufsize =
 1523                             f->fs_xfer[u.popen->ep_index]->max_data_length;
 1524                         f->fs_xfer[u.popen->ep_index]->priv_fifo =
 1525                             ((uint8_t *)0) + u.popen->ep_index;
 1526                 } else {
 1527                         error = ENOMEM;
 1528                 }
 1529                 break;
 1530 
 1531         case USB_FS_CLOSE:
 1532                 if (u.pclose->ep_index >= f->fs_ep_max) {
 1533                         error = EINVAL;
 1534                         break;
 1535                 }
 1536                 if (f->fs_xfer[u.pclose->ep_index] == NULL) {
 1537                         error = EINVAL;
 1538                         break;
 1539                 }
 1540                 usbd_transfer_unsetup(f->fs_xfer + u.pclose->ep_index, 1);
 1541                 break;
 1542 
 1543         case USB_FS_CLEAR_STALL_SYNC:
 1544                 if (u.pstall->ep_index >= f->fs_ep_max) {
 1545                         error = EINVAL;
 1546                         break;
 1547                 }
 1548                 if (f->fs_xfer[u.pstall->ep_index] == NULL) {
 1549                         error = EINVAL;
 1550                         break;
 1551                 }
 1552                 if (f->udev->flags.usb_mode != USB_MODE_HOST) {
 1553                         error = EINVAL;
 1554                         break;
 1555                 }
 1556                 mtx_lock(f->priv_mtx);
 1557                 error = usbd_transfer_pending(f->fs_xfer[u.pstall->ep_index]);
 1558                 mtx_unlock(f->priv_mtx);
 1559 
 1560                 if (error) {
 1561                         return (EBUSY);
 1562                 }
 1563                 ep = f->fs_xfer[u.pstall->ep_index]->endpoint;
 1564 
 1565                 /* setup a clear-stall packet */
 1566                 req.bmRequestType = UT_WRITE_ENDPOINT;
 1567                 req.bRequest = UR_CLEAR_FEATURE;
 1568                 USETW(req.wValue, UF_ENDPOINT_HALT);
 1569                 req.wIndex[0] = ep->edesc->bEndpointAddress;
 1570                 req.wIndex[1] = 0;
 1571                 USETW(req.wLength, 0);
 1572 
 1573                 error = usbd_do_request(f->udev, NULL, &req, NULL);
 1574                 if (error == 0) {
 1575                         usbd_clear_data_toggle(f->udev, ep);
 1576                 } else {
 1577                         error = ENXIO;
 1578                 }
 1579                 break;
 1580 
 1581         default:
 1582                 error = ENOIOCTL;
 1583                 break;
 1584         }
 1585 
 1586         DPRINTFN(6, "error=%d\n", error);
 1587 
 1588         return (error);
 1589 }
 1590 
 1591 static int
 1592 ugen_set_short_xfer(struct usb_fifo *f, void *addr)
 1593 {
 1594         uint8_t t;
 1595 
 1596         if (*(int *)addr)
 1597                 t = 1;
 1598         else
 1599                 t = 0;
 1600 
 1601         if (f->flag_short == t) {
 1602                 /* same value like before - accept */
 1603                 return (0);
 1604         }
 1605         if (f->xfer[0] || f->xfer[1]) {
 1606                 /* cannot change this during transfer */
 1607                 return (EBUSY);
 1608         }
 1609         f->flag_short = t;
 1610         return (0);
 1611 }
 1612 
 1613 static int
 1614 ugen_set_timeout(struct usb_fifo *f, void *addr)
 1615 {
 1616         f->timeout = *(int *)addr;
 1617         if (f->timeout > 65535) {
 1618                 /* limit user input */
 1619                 f->timeout = 65535;
 1620         }
 1621         return (0);
 1622 }
 1623 
 1624 static int
 1625 ugen_get_frame_size(struct usb_fifo *f, void *addr)
 1626 {
 1627         if (f->xfer[0]) {
 1628                 *(int *)addr = f->xfer[0]->max_frame_size;
 1629         } else {
 1630                 return (EINVAL);
 1631         }
 1632         return (0);
 1633 }
 1634 
 1635 static int
 1636 ugen_set_buffer_size(struct usb_fifo *f, void *addr)
 1637 {
 1638         usb_frlength_t t;
 1639 
 1640         if (*(int *)addr < 0)
 1641                 t = 0;          /* use "wMaxPacketSize" */
 1642         else if (*(int *)addr < (256 * 1024))
 1643                 t = *(int *)addr;
 1644         else
 1645                 t = 256 * 1024;
 1646 
 1647         if (f->bufsize == t) {
 1648                 /* same value like before - accept */
 1649                 return (0);
 1650         }
 1651         if (f->xfer[0] || f->xfer[1]) {
 1652                 /* cannot change this during transfer */
 1653                 return (EBUSY);
 1654         }
 1655         f->bufsize = t;
 1656         return (0);
 1657 }
 1658 
 1659 static int
 1660 ugen_get_buffer_size(struct usb_fifo *f, void *addr)
 1661 {
 1662         *(int *)addr = f->bufsize;
 1663         return (0);
 1664 }
 1665 
 1666 static int
 1667 ugen_get_iface_desc(struct usb_fifo *f,
 1668     struct usb_interface_descriptor *idesc)
 1669 {
 1670         struct usb_interface *iface;
 1671 
 1672         iface = usbd_get_iface(f->udev, f->iface_index);
 1673         if (iface && iface->idesc) {
 1674                 *idesc = *(iface->idesc);
 1675         } else {
 1676                 return (EIO);
 1677         }
 1678         return (0);
 1679 }
 1680 
 1681 static int
 1682 ugen_get_endpoint_desc(struct usb_fifo *f,
 1683     struct usb_endpoint_descriptor *ed)
 1684 {
 1685         struct usb_endpoint *ep;
 1686 
 1687         ep = usb_fifo_softc(f);
 1688 
 1689         if (ep && ep->edesc) {
 1690                 *ed = *ep->edesc;
 1691         } else {
 1692                 return (EINVAL);
 1693         }
 1694         return (0);
 1695 }
 1696 
 1697 static int
 1698 ugen_set_power_mode(struct usb_fifo *f, int mode)
 1699 {
 1700         struct usb_device *udev = f->udev;
 1701         int err;
 1702         uint8_t old_mode;
 1703 
 1704         if ((udev == NULL) ||
 1705             (udev->parent_hub == NULL)) {
 1706                 return (EINVAL);
 1707         }
 1708         err = priv_check(curthread, PRIV_DRIVER);
 1709         if (err)
 1710                 return (err);
 1711 
 1712         /* get old power mode */
 1713         old_mode = udev->power_mode;
 1714 
 1715         /* if no change, then just return */
 1716         if (old_mode == mode)
 1717                 return (0);
 1718 
 1719         switch (mode) {
 1720         case USB_POWER_MODE_OFF:
 1721                 /* get the device unconfigured */
 1722                 err = ugen_set_config(f, USB_UNCONFIG_INDEX);
 1723                 if (err) {
 1724                         DPRINTFN(0, "Could not unconfigure "
 1725                             "device (ignored)\n");
 1726                 }
 1727 
 1728                 /* clear port enable */
 1729                 err = usbd_req_clear_port_feature(udev->parent_hub,
 1730                     NULL, udev->port_no, UHF_PORT_ENABLE);
 1731                 break;
 1732 
 1733         case USB_POWER_MODE_ON:
 1734         case USB_POWER_MODE_SAVE:
 1735                 break;
 1736 
 1737         case USB_POWER_MODE_RESUME:
 1738 #if USB_HAVE_POWERD
 1739                 /* let USB-powerd handle resume */
 1740                 USB_BUS_LOCK(udev->bus);
 1741                 udev->pwr_save.write_refs++;
 1742                 udev->pwr_save.last_xfer_time = ticks;
 1743                 USB_BUS_UNLOCK(udev->bus);
 1744 
 1745                 /* set new power mode */
 1746                 usbd_set_power_mode(udev, USB_POWER_MODE_SAVE);
 1747 
 1748                 /* wait for resume to complete */
 1749                 usb_pause_mtx(NULL, hz / 4);
 1750 
 1751                 /* clear write reference */
 1752                 USB_BUS_LOCK(udev->bus);
 1753                 udev->pwr_save.write_refs--;
 1754                 USB_BUS_UNLOCK(udev->bus);
 1755 #endif
 1756                 mode = USB_POWER_MODE_SAVE;
 1757                 break;
 1758 
 1759         case USB_POWER_MODE_SUSPEND:
 1760 #if USB_HAVE_POWERD
 1761                 /* let USB-powerd handle suspend */
 1762                 USB_BUS_LOCK(udev->bus);
 1763                 udev->pwr_save.last_xfer_time = ticks - (256 * hz);
 1764                 USB_BUS_UNLOCK(udev->bus);
 1765 #endif
 1766                 mode = USB_POWER_MODE_SAVE;
 1767                 break;
 1768 
 1769         default:
 1770                 return (EINVAL);
 1771         }
 1772 
 1773         if (err)
 1774                 return (ENXIO);         /* I/O failure */
 1775 
 1776         /* if we are powered off we need to re-enumerate first */
 1777         if (old_mode == USB_POWER_MODE_OFF) {
 1778                 err = ugen_re_enumerate(f);
 1779                 if (err)
 1780                         return (err);
 1781         }
 1782 
 1783         /* set new power mode */
 1784         usbd_set_power_mode(udev, mode);
 1785 
 1786         return (0);                     /* success */
 1787 }
 1788 
 1789 static int
 1790 ugen_get_power_mode(struct usb_fifo *f)
 1791 {
 1792         struct usb_device *udev = f->udev;
 1793 
 1794         if ((udev == NULL) ||
 1795             (udev->parent_hub == NULL)) {
 1796                 return (USB_POWER_MODE_ON);
 1797         }
 1798         return (udev->power_mode);
 1799 }
 1800 
 1801 static int
 1802 ugen_do_port_feature(struct usb_fifo *f, uint8_t port_no,
 1803     uint8_t set, uint16_t feature)
 1804 {
 1805         struct usb_device *udev = f->udev;
 1806         struct usb_hub *hub;
 1807         int err;
 1808 
 1809         err = priv_check(curthread, PRIV_DRIVER);
 1810         if (err) {
 1811                 return (err);
 1812         }
 1813         if (port_no == 0) {
 1814                 return (EINVAL);
 1815         }
 1816         if ((udev == NULL) ||
 1817             (udev->hub == NULL)) {
 1818                 return (EINVAL);
 1819         }
 1820         hub = udev->hub;
 1821 
 1822         if (port_no > hub->nports) {
 1823                 return (EINVAL);
 1824         }
 1825         if (set)
 1826                 err = usbd_req_set_port_feature(udev,
 1827                     NULL, port_no, feature);
 1828         else
 1829                 err = usbd_req_clear_port_feature(udev,
 1830                     NULL, port_no, feature);
 1831 
 1832         if (err)
 1833                 return (ENXIO);         /* failure */
 1834 
 1835         return (0);                     /* success */
 1836 }
 1837 
 1838 static int
 1839 ugen_iface_ioctl(struct usb_fifo *f, u_long cmd, void *addr, int fflags)
 1840 {
 1841         struct usb_fifo *f_rx;
 1842         struct usb_fifo *f_tx;
 1843         int error = 0;
 1844 
 1845         f_rx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_RX];
 1846         f_tx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_TX];
 1847 
 1848         switch (cmd) {
 1849         case USB_SET_RX_SHORT_XFER:
 1850                 if (fflags & FREAD) {
 1851                         error = ugen_set_short_xfer(f_rx, addr);
 1852                 } else {
 1853                         error = EINVAL;
 1854                 }
 1855                 break;
 1856 
 1857         case USB_SET_TX_FORCE_SHORT:
 1858                 if (fflags & FWRITE) {
 1859                         error = ugen_set_short_xfer(f_tx, addr);
 1860                 } else {
 1861                         error = EINVAL;
 1862                 }
 1863                 break;
 1864 
 1865         case USB_SET_RX_TIMEOUT:
 1866                 if (fflags & FREAD) {
 1867                         error = ugen_set_timeout(f_rx, addr);
 1868                 } else {
 1869                         error = EINVAL;
 1870                 }
 1871                 break;
 1872 
 1873         case USB_SET_TX_TIMEOUT:
 1874                 if (fflags & FWRITE) {
 1875                         error = ugen_set_timeout(f_tx, addr);
 1876                 } else {
 1877                         error = EINVAL;
 1878                 }
 1879                 break;
 1880 
 1881         case USB_GET_RX_FRAME_SIZE:
 1882                 if (fflags & FREAD) {
 1883                         error = ugen_get_frame_size(f_rx, addr);
 1884                 } else {
 1885                         error = EINVAL;
 1886                 }
 1887                 break;
 1888 
 1889         case USB_GET_TX_FRAME_SIZE:
 1890                 if (fflags & FWRITE) {
 1891                         error = ugen_get_frame_size(f_tx, addr);
 1892                 } else {
 1893                         error = EINVAL;
 1894                 }
 1895                 break;
 1896 
 1897         case USB_SET_RX_BUFFER_SIZE:
 1898                 if (fflags & FREAD) {
 1899                         error = ugen_set_buffer_size(f_rx, addr);
 1900                 } else {
 1901                         error = EINVAL;
 1902                 }
 1903                 break;
 1904 
 1905         case USB_SET_TX_BUFFER_SIZE:
 1906                 if (fflags & FWRITE) {
 1907                         error = ugen_set_buffer_size(f_tx, addr);
 1908                 } else {
 1909                         error = EINVAL;
 1910                 }
 1911                 break;
 1912 
 1913         case USB_GET_RX_BUFFER_SIZE:
 1914                 if (fflags & FREAD) {
 1915                         error = ugen_get_buffer_size(f_rx, addr);
 1916                 } else {
 1917                         error = EINVAL;
 1918                 }
 1919                 break;
 1920 
 1921         case USB_GET_TX_BUFFER_SIZE:
 1922                 if (fflags & FWRITE) {
 1923                         error = ugen_get_buffer_size(f_tx, addr);
 1924                 } else {
 1925                         error = EINVAL;
 1926                 }
 1927                 break;
 1928 
 1929         case USB_GET_RX_INTERFACE_DESC:
 1930                 if (fflags & FREAD) {
 1931                         error = ugen_get_iface_desc(f_rx, addr);
 1932                 } else {
 1933                         error = EINVAL;
 1934                 }
 1935                 break;
 1936 
 1937         case USB_GET_TX_INTERFACE_DESC:
 1938                 if (fflags & FWRITE) {
 1939                         error = ugen_get_iface_desc(f_tx, addr);
 1940                 } else {
 1941                         error = EINVAL;
 1942                 }
 1943                 break;
 1944 
 1945         case USB_GET_RX_ENDPOINT_DESC:
 1946                 if (fflags & FREAD) {
 1947                         error = ugen_get_endpoint_desc(f_rx, addr);
 1948                 } else {
 1949                         error = EINVAL;
 1950                 }
 1951                 break;
 1952 
 1953         case USB_GET_TX_ENDPOINT_DESC:
 1954                 if (fflags & FWRITE) {
 1955                         error = ugen_get_endpoint_desc(f_tx, addr);
 1956                 } else {
 1957                         error = EINVAL;
 1958                 }
 1959                 break;
 1960 
 1961         case USB_SET_RX_STALL_FLAG:
 1962                 if ((fflags & FREAD) && (*(int *)addr)) {
 1963                         f_rx->flag_stall = 1;
 1964                 }
 1965                 break;
 1966 
 1967         case USB_SET_TX_STALL_FLAG:
 1968                 if ((fflags & FWRITE) && (*(int *)addr)) {
 1969                         f_tx->flag_stall = 1;
 1970                 }
 1971                 break;
 1972 
 1973         default:
 1974                 error = ENOIOCTL;
 1975                 break;
 1976         }
 1977         return (error);
 1978 }
 1979 
 1980 static int
 1981 ugen_ioctl_post(struct usb_fifo *f, u_long cmd, void *addr, int fflags)
 1982 {
 1983         union {
 1984                 struct usb_interface_descriptor *idesc;
 1985                 struct usb_alt_interface *ai;
 1986                 struct usb_device_descriptor *ddesc;
 1987                 struct usb_config_descriptor *cdesc;
 1988                 struct usb_device_stats *stat;
 1989                 struct usb_fs_init *pinit;
 1990                 struct usb_fs_uninit *puninit;
 1991                 uint32_t *ptime;
 1992                 void   *addr;
 1993                 int    *pint;
 1994         }     u;
 1995         struct usb_device_descriptor *dtemp;
 1996         struct usb_config_descriptor *ctemp;
 1997         struct usb_interface *iface;
 1998         int error = 0;
 1999         uint8_t n;
 2000 
 2001         u.addr = addr;
 2002 
 2003         DPRINTFN(6, "cmd=0x%08lx\n", cmd);
 2004 
 2005         switch (cmd) {
 2006         case USB_DISCOVER:
 2007                 usb_needs_explore_all();
 2008                 break;
 2009 
 2010         case USB_SETDEBUG:
 2011                 if (!(fflags & FWRITE)) {
 2012                         error = EPERM;
 2013                         break;
 2014                 }
 2015                 usb_debug = *(int *)addr;
 2016                 break;
 2017 
 2018         case USB_GET_CONFIG:
 2019                 *(int *)addr = f->udev->curr_config_index;
 2020                 break;
 2021 
 2022         case USB_SET_CONFIG:
 2023                 if (!(fflags & FWRITE)) {
 2024                         error = EPERM;
 2025                         break;
 2026                 }
 2027                 error = ugen_set_config(f, *(int *)addr);
 2028                 break;
 2029 
 2030         case USB_GET_ALTINTERFACE:
 2031                 iface = usbd_get_iface(f->udev,
 2032                     u.ai->uai_interface_index);
 2033                 if (iface && iface->idesc) {
 2034                         u.ai->uai_alt_index = iface->alt_index;
 2035                 } else {
 2036                         error = EINVAL;
 2037                 }
 2038                 break;
 2039 
 2040         case USB_SET_ALTINTERFACE:
 2041                 if (!(fflags & FWRITE)) {
 2042                         error = EPERM;
 2043                         break;
 2044                 }
 2045                 error = ugen_set_interface(f,
 2046                     u.ai->uai_interface_index, u.ai->uai_alt_index);
 2047                 break;
 2048 
 2049         case USB_GET_DEVICE_DESC:
 2050                 dtemp = usbd_get_device_descriptor(f->udev);
 2051                 if (!dtemp) {
 2052                         error = EIO;
 2053                         break;
 2054                 }
 2055                 *u.ddesc = *dtemp;
 2056                 break;
 2057 
 2058         case USB_GET_CONFIG_DESC:
 2059                 ctemp = usbd_get_config_descriptor(f->udev);
 2060                 if (!ctemp) {
 2061                         error = EIO;
 2062                         break;
 2063                 }
 2064                 *u.cdesc = *ctemp;
 2065                 break;
 2066 
 2067         case USB_GET_FULL_DESC:
 2068                 error = ugen_get_cdesc(f, addr);
 2069                 break;
 2070 
 2071         case USB_GET_STRING_DESC:
 2072                 error = ugen_get_sdesc(f, addr);
 2073                 break;
 2074 
 2075         case USB_GET_IFACE_DRIVER:
 2076                 error = ugen_get_iface_driver(f, addr);
 2077                 break;
 2078 
 2079         case USB_REQUEST:
 2080         case USB_DO_REQUEST:
 2081                 if (!(fflags & FWRITE)) {
 2082                         error = EPERM;
 2083                         break;
 2084                 }
 2085                 error = ugen_do_request(f, addr);
 2086                 break;
 2087 
 2088         case USB_DEVICEINFO:
 2089         case USB_GET_DEVICEINFO:
 2090                 error = usb_gen_fill_deviceinfo(f, addr);
 2091                 break;
 2092 
 2093         case USB_DEVICESTATS:
 2094                 for (n = 0; n != 4; n++) {
 2095 
 2096                         u.stat->uds_requests_fail[n] =
 2097                             f->udev->bus->stats_err.uds_requests[n];
 2098 
 2099                         u.stat->uds_requests_ok[n] =
 2100                             f->udev->bus->stats_ok.uds_requests[n];
 2101                 }
 2102                 break;
 2103 
 2104         case USB_DEVICEENUMERATE:
 2105                 error = ugen_re_enumerate(f);
 2106                 break;
 2107 
 2108         case USB_GET_PLUGTIME:
 2109                 *u.ptime = f->udev->plugtime;
 2110                 break;
 2111 
 2112         case USB_CLAIM_INTERFACE:
 2113         case USB_RELEASE_INTERFACE:
 2114                 /* TODO */
 2115                 break;
 2116 
 2117         case USB_IFACE_DRIVER_ACTIVE:
 2118 
 2119                 n = *u.pint & 0xFF;
 2120 
 2121                 iface = usbd_get_iface(f->udev, n);
 2122 
 2123                 if (iface && iface->subdev)
 2124                         error = 0;
 2125                 else
 2126                         error = ENXIO;
 2127                 break;
 2128 
 2129         case USB_IFACE_DRIVER_DETACH:
 2130 
 2131                 error = priv_check(curthread, PRIV_DRIVER);
 2132 
 2133                 if (error)
 2134                         break;
 2135 
 2136                 n = *u.pint & 0xFF;
 2137 
 2138                 if (n == USB_IFACE_INDEX_ANY) {
 2139                         error = EINVAL;
 2140                         break;
 2141                 }
 2142 
 2143                 usb_detach_device(f->udev, n, 0);
 2144                 break;
 2145 
 2146         case USB_SET_POWER_MODE:
 2147                 error = ugen_set_power_mode(f, *u.pint);
 2148                 break;
 2149 
 2150         case USB_GET_POWER_MODE:
 2151                 *u.pint = ugen_get_power_mode(f);
 2152                 break;
 2153 
 2154         case USB_SET_PORT_ENABLE:
 2155                 error = ugen_do_port_feature(f,
 2156                     *u.pint, 1, UHF_PORT_ENABLE);
 2157                 break;
 2158 
 2159         case USB_SET_PORT_DISABLE:
 2160                 error = ugen_do_port_feature(f,
 2161                     *u.pint, 0, UHF_PORT_ENABLE);
 2162                 break;
 2163 
 2164         case USB_FS_INIT:
 2165                 /* verify input parameters */
 2166                 if (u.pinit->pEndpoints == NULL) {
 2167                         error = EINVAL;
 2168                         break;
 2169                 }
 2170                 if (u.pinit->ep_index_max > 127) {
 2171                         error = EINVAL;
 2172                         break;
 2173                 }
 2174                 if (u.pinit->ep_index_max == 0) {
 2175                         error = EINVAL;
 2176                         break;
 2177                 }
 2178                 if (f->fs_xfer != NULL) {
 2179                         error = EBUSY;
 2180                         break;
 2181                 }
 2182                 if (f->dev_ep_index != 0) {
 2183                         error = EINVAL;
 2184                         break;
 2185                 }
 2186                 if (ugen_fifo_in_use(f, fflags)) {
 2187                         error = EBUSY;
 2188                         break;
 2189                 }
 2190                 error = usb_fifo_alloc_buffer(f, 1, u.pinit->ep_index_max);
 2191                 if (error) {
 2192                         break;
 2193                 }
 2194                 f->fs_xfer = malloc(sizeof(f->fs_xfer[0]) *
 2195                     u.pinit->ep_index_max, M_USB, M_WAITOK | M_ZERO);
 2196                 if (f->fs_xfer == NULL) {
 2197                         usb_fifo_free_buffer(f);
 2198                         error = ENOMEM;
 2199                         break;
 2200                 }
 2201                 f->fs_ep_max = u.pinit->ep_index_max;
 2202                 f->fs_ep_ptr = u.pinit->pEndpoints;
 2203                 break;
 2204 
 2205         case USB_FS_UNINIT:
 2206                 if (u.puninit->dummy != 0) {
 2207                         error = EINVAL;
 2208                         break;
 2209                 }
 2210                 error = ugen_fs_uninit(f);
 2211                 break;
 2212 
 2213         default:
 2214                 mtx_lock(f->priv_mtx);
 2215                 error = ugen_iface_ioctl(f, cmd, addr, fflags);
 2216                 mtx_unlock(f->priv_mtx);
 2217                 break;
 2218         }
 2219         DPRINTFN(6, "error=%d\n", error);
 2220         return (error);
 2221 }
 2222 
 2223 static void
 2224 ugen_ctrl_fs_callback(struct usb_xfer *xfer, usb_error_t error)
 2225 {
 2226         ;                               /* workaround for a bug in "indent" */
 2227 
 2228         DPRINTF("st=%u alen=%u aframes=%u\n",
 2229             USB_GET_STATE(xfer), xfer->actlen, xfer->aframes);
 2230 
 2231         switch (USB_GET_STATE(xfer)) {
 2232         case USB_ST_SETUP:
 2233                 usbd_transfer_submit(xfer);
 2234                 break;
 2235         default:
 2236                 ugen_fs_set_complete(xfer->priv_sc, USB_P2U(xfer->priv_fifo));
 2237                 break;
 2238         }
 2239 }
 2240 #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
