usb_generic.c

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    1 /* $FreeBSD: releng/8.0/sys/dev/usb/usb_generic.c 196220 2009-08-14 20:09:31Z jhb $ */
    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_default_read_callback;
   85 static usb_callback_t ugen_default_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_default_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 #endif
  134 
  135 
  136 /* prototypes */
  137 
  138 static int
  139 ugen_transfer_setup(struct usb_fifo *f,
  140     const struct usb_config *setup, uint8_t n_setup)
  141 {
  142         struct usb_endpoint *ep = usb_fifo_softc(f);
  143         struct usb_device *udev = f->udev;
  144         uint8_t iface_index = ep->iface_index;
  145         int error;
  146 
  147         mtx_unlock(f->priv_mtx);
  148 
  149         /*
  150          * "usbd_transfer_setup()" can sleep so one needs to make a wrapper,
  151          * exiting the mutex and checking things
  152          */
  153         error = usbd_transfer_setup(udev, &iface_index, f->xfer,
  154             setup, n_setup, f, f->priv_mtx);
  155         if (error == 0) {
  156 
  157                 if (f->xfer[0]->nframes == 1) {
  158                         error = usb_fifo_alloc_buffer(f,
  159                             f->xfer[0]->max_data_length, 2);
  160                 } else {
  161                         error = usb_fifo_alloc_buffer(f,
  162                             f->xfer[0]->max_frame_size,
  163                             2 * f->xfer[0]->nframes);
  164                 }
  165                 if (error) {
  166                         usbd_transfer_unsetup(f->xfer, n_setup);
  167                 }
  168         }
  169         mtx_lock(f->priv_mtx);
  170 
  171         return (error);
  172 }
  173 
  174 static int
  175 ugen_open(struct usb_fifo *f, int fflags)
  176 {
  177         struct usb_endpoint *ep = usb_fifo_softc(f);
  178         struct usb_endpoint_descriptor *ed = ep->edesc;
  179         uint8_t type;
  180 
  181         DPRINTFN(6, "flag=0x%x\n", fflags);
  182 
  183         mtx_lock(f->priv_mtx);
  184         switch (usbd_get_speed(f->udev)) {
  185         case USB_SPEED_LOW:
  186         case USB_SPEED_FULL:
  187                 f->nframes = UGEN_HW_FRAMES;
  188                 f->bufsize = UGEN_BULK_FS_BUFFER_SIZE;
  189                 break;
  190         default:
  191                 f->nframes = UGEN_HW_FRAMES * 8;
  192                 f->bufsize = UGEN_BULK_HS_BUFFER_SIZE;
  193                 break;
  194         }
  195 
  196         type = ed->bmAttributes & UE_XFERTYPE;
  197         if (type == UE_INTERRUPT) {
  198                 f->bufsize = 0;         /* use "wMaxPacketSize" */
  199         }
  200         f->timeout = USB_NO_TIMEOUT;
  201         f->flag_short = 0;
  202         f->fifo_zlp = 0;
  203         mtx_unlock(f->priv_mtx);
  204 
  205         return (0);
  206 }
  207 
  208 static void
  209 ugen_close(struct usb_fifo *f, int fflags)
  210 {
  211         DPRINTFN(6, "flag=0x%x\n", fflags);
  212 
  213         /* cleanup */
  214 
  215         mtx_lock(f->priv_mtx);
  216         usbd_transfer_stop(f->xfer[0]);
  217         usbd_transfer_stop(f->xfer[1]);
  218         mtx_unlock(f->priv_mtx);
  219 
  220         usbd_transfer_unsetup(f->xfer, 2);
  221         usb_fifo_free_buffer(f);
  222 
  223         if (ugen_fs_uninit(f)) {
  224                 /* ignore any errors - we are closing */
  225                 DPRINTFN(6, "no FIFOs\n");
  226         }
  227 }
  228 
  229 static int
  230 ugen_open_pipe_write(struct usb_fifo *f)
  231 {
  232         struct usb_config usb_config[2];
  233         struct usb_endpoint *ep = usb_fifo_softc(f);
  234         struct usb_endpoint_descriptor *ed = ep->edesc;
  235 
  236         mtx_assert(f->priv_mtx, MA_OWNED);
  237 
  238         if (f->xfer[0] || f->xfer[1]) {
  239                 /* transfers are already opened */
  240                 return (0);
  241         }
  242         bzero(usb_config, sizeof(usb_config));
  243 
  244         usb_config[1].type = UE_CONTROL;
  245         usb_config[1].endpoint = 0;
  246         usb_config[1].direction = UE_DIR_ANY;
  247         usb_config[1].timeout = 1000;   /* 1 second */
  248         usb_config[1].interval = 50;/* 50 milliseconds */
  249         usb_config[1].bufsize = sizeof(struct usb_device_request);
  250         usb_config[1].callback = &ugen_write_clear_stall_callback;
  251         usb_config[1].usb_mode = USB_MODE_HOST;
  252 
  253         usb_config[0].type = ed->bmAttributes & UE_XFERTYPE;
  254         usb_config[0].endpoint = ed->bEndpointAddress & UE_ADDR;
  255         usb_config[0].direction = UE_DIR_TX;
  256         usb_config[0].interval = USB_DEFAULT_INTERVAL;
  257         usb_config[0].flags.proxy_buffer = 1;
  258         usb_config[0].usb_mode = USB_MODE_DUAL; /* both modes */
  259 
  260         switch (ed->bmAttributes & UE_XFERTYPE) {
  261         case UE_INTERRUPT:
  262         case UE_BULK:
  263                 if (f->flag_short) {
  264                         usb_config[0].flags.force_short_xfer = 1;
  265                 }
  266                 usb_config[0].callback = &ugen_default_write_callback;
  267                 usb_config[0].timeout = f->timeout;
  268                 usb_config[0].frames = 1;
  269                 usb_config[0].bufsize = f->bufsize;
  270                 if (ugen_transfer_setup(f, usb_config, 2)) {
  271                         return (EIO);
  272                 }
  273                 /* first transfer does not clear stall */
  274                 f->flag_stall = 0;
  275                 break;
  276 
  277         case UE_ISOCHRONOUS:
  278                 usb_config[0].flags.short_xfer_ok = 1;
  279                 usb_config[0].bufsize = 0;      /* use default */
  280                 usb_config[0].frames = f->nframes;
  281                 usb_config[0].callback = &ugen_isoc_write_callback;
  282                 usb_config[0].timeout = 0;
  283 
  284                 /* clone configuration */
  285                 usb_config[1] = usb_config[0];
  286 
  287                 if (ugen_transfer_setup(f, usb_config, 2)) {
  288                         return (EIO);
  289                 }
  290                 break;
  291         default:
  292                 return (EINVAL);
  293         }
  294         return (0);
  295 }
  296 
  297 static int
  298 ugen_open_pipe_read(struct usb_fifo *f)
  299 {
  300         struct usb_config usb_config[2];
  301         struct usb_endpoint *ep = usb_fifo_softc(f);
  302         struct usb_endpoint_descriptor *ed = ep->edesc;
  303 
  304         mtx_assert(f->priv_mtx, MA_OWNED);
  305 
  306         if (f->xfer[0] || f->xfer[1]) {
  307                 /* transfers are already opened */
  308                 return (0);
  309         }
  310         bzero(usb_config, sizeof(usb_config));
  311 
  312         usb_config[1].type = UE_CONTROL;
  313         usb_config[1].endpoint = 0;
  314         usb_config[1].direction = UE_DIR_ANY;
  315         usb_config[1].timeout = 1000;   /* 1 second */
  316         usb_config[1].interval = 50;/* 50 milliseconds */
  317         usb_config[1].bufsize = sizeof(struct usb_device_request);
  318         usb_config[1].callback = &ugen_read_clear_stall_callback;
  319         usb_config[1].usb_mode = USB_MODE_HOST;
  320 
  321         usb_config[0].type = ed->bmAttributes & UE_XFERTYPE;
  322         usb_config[0].endpoint = ed->bEndpointAddress & UE_ADDR;
  323         usb_config[0].direction = UE_DIR_RX;
  324         usb_config[0].interval = USB_DEFAULT_INTERVAL;
  325         usb_config[0].flags.proxy_buffer = 1;
  326         usb_config[0].usb_mode = USB_MODE_DUAL; /* both modes */
  327 
  328         switch (ed->bmAttributes & UE_XFERTYPE) {
  329         case UE_INTERRUPT:
  330         case UE_BULK:
  331                 if (f->flag_short) {
  332                         usb_config[0].flags.short_xfer_ok = 1;
  333                 }
  334                 usb_config[0].timeout = f->timeout;
  335                 usb_config[0].frames = 1;
  336                 usb_config[0].callback = &ugen_default_read_callback;
  337                 usb_config[0].bufsize = f->bufsize;
  338 
  339                 if (ugen_transfer_setup(f, usb_config, 2)) {
  340                         return (EIO);
  341                 }
  342                 /* first transfer does not clear stall */
  343                 f->flag_stall = 0;
  344                 break;
  345 
  346         case UE_ISOCHRONOUS:
  347                 usb_config[0].flags.short_xfer_ok = 1;
  348                 usb_config[0].bufsize = 0;      /* use default */
  349                 usb_config[0].frames = f->nframes;
  350                 usb_config[0].callback = &ugen_isoc_read_callback;
  351                 usb_config[0].timeout = 0;
  352 
  353                 /* clone configuration */
  354                 usb_config[1] = usb_config[0];
  355 
  356                 if (ugen_transfer_setup(f, usb_config, 2)) {
  357                         return (EIO);
  358                 }
  359                 break;
  360 
  361         default:
  362                 return (EINVAL);
  363         }
  364         return (0);
  365 }
  366 
  367 static void
  368 ugen_start_read(struct usb_fifo *f)
  369 {
  370         /* check that pipes are open */
  371         if (ugen_open_pipe_read(f)) {
  372                 /* signal error */
  373                 usb_fifo_put_data_error(f);
  374         }
  375         /* start transfers */
  376         usbd_transfer_start(f->xfer[0]);
  377         usbd_transfer_start(f->xfer[1]);
  378 }
  379 
  380 static void
  381 ugen_start_write(struct usb_fifo *f)
  382 {
  383         /* check that pipes are open */
  384         if (ugen_open_pipe_write(f)) {
  385                 /* signal error */
  386                 usb_fifo_get_data_error(f);
  387         }
  388         /* start transfers */
  389         usbd_transfer_start(f->xfer[0]);
  390         usbd_transfer_start(f->xfer[1]);
  391 }
  392 
  393 static void
  394 ugen_stop_io(struct usb_fifo *f)
  395 {
  396         /* stop transfers */
  397         usbd_transfer_stop(f->xfer[0]);
  398         usbd_transfer_stop(f->xfer[1]);
  399 }
  400 
  401 static void
  402 ugen_default_read_callback(struct usb_xfer *xfer, usb_error_t error)
  403 {
  404         struct usb_fifo *f = usbd_xfer_softc(xfer);
  405         struct usb_mbuf *m;
  406 
  407         DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
  408 
  409         switch (USB_GET_STATE(xfer)) {
  410         case USB_ST_TRANSFERRED:
  411                 if (xfer->actlen == 0) {
  412                         if (f->fifo_zlp != 4) {
  413                                 f->fifo_zlp++;
  414                         } else {
  415                                 /*
  416                                  * Throttle a little bit we have multiple ZLPs
  417                                  * in a row!
  418                                  */
  419                                 xfer->interval = 64;    /* ms */
  420                         }
  421                 } else {
  422                         /* clear throttle */
  423                         xfer->interval = 0;
  424                         f->fifo_zlp = 0;
  425                 }
  426                 usb_fifo_put_data(f, xfer->frbuffers, 0,
  427                     xfer->actlen, 1);
  428 
  429         case USB_ST_SETUP:
  430                 if (f->flag_stall) {
  431                         usbd_transfer_start(f->xfer[1]);
  432                         break;
  433                 }
  434                 USB_IF_POLL(&f->free_q, m);
  435                 if (m) {
  436                         usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
  437                         usbd_transfer_submit(xfer);
  438                 }
  439                 break;
  440 
  441         default:                        /* Error */
  442                 if (xfer->error != USB_ERR_CANCELLED) {
  443                         /* send a zero length packet to userland */
  444                         usb_fifo_put_data(f, xfer->frbuffers, 0, 0, 1);
  445                         f->flag_stall = 1;
  446                         f->fifo_zlp = 0;
  447                         usbd_transfer_start(f->xfer[1]);
  448                 }
  449                 break;
  450         }
  451 }
  452 
  453 static void
  454 ugen_default_write_callback(struct usb_xfer *xfer, usb_error_t error)
  455 {
  456         struct usb_fifo *f = usbd_xfer_softc(xfer);
  457         usb_frlength_t actlen;
  458 
  459         DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
  460 
  461         switch (USB_GET_STATE(xfer)) {
  462         case USB_ST_SETUP:
  463         case USB_ST_TRANSFERRED:
  464                 /*
  465                  * If writing is in stall, just jump to clear stall
  466                  * callback and solve the situation.
  467                  */
  468                 if (f->flag_stall) {
  469                         usbd_transfer_start(f->xfer[1]);
  470                         break;
  471                 }
  472                 /*
  473                  * Write data, setup and perform hardware transfer.
  474                  */
  475                 if (usb_fifo_get_data(f, xfer->frbuffers, 0,
  476                     xfer->max_data_length, &actlen, 0)) {
  477                         usbd_xfer_set_frame_len(xfer, 0, actlen);
  478                         usbd_transfer_submit(xfer);
  479                 }
  480                 break;
  481 
  482         default:                        /* Error */
  483                 if (xfer->error != USB_ERR_CANCELLED) {
  484                         f->flag_stall = 1;
  485                         usbd_transfer_start(f->xfer[1]);
  486                 }
  487                 break;
  488         }
  489 }
  490 
  491 static void
  492 ugen_read_clear_stall_callback(struct usb_xfer *xfer, usb_error_t error)
  493 {
  494         struct usb_fifo *f = usbd_xfer_softc(xfer);
  495         struct usb_xfer *xfer_other = f->xfer[0];
  496 
  497         if (f->flag_stall == 0) {
  498                 /* nothing to do */
  499                 return;
  500         }
  501         if (usbd_clear_stall_callback(xfer, xfer_other)) {
  502                 DPRINTFN(5, "f=%p: stall cleared\n", f);
  503                 f->flag_stall = 0;
  504                 usbd_transfer_start(xfer_other);
  505         }
  506 }
  507 
  508 static void
  509 ugen_write_clear_stall_callback(struct usb_xfer *xfer, usb_error_t error)
  510 {
  511         struct usb_fifo *f = usbd_xfer_softc(xfer);
  512         struct usb_xfer *xfer_other = f->xfer[0];
  513 
  514         if (f->flag_stall == 0) {
  515                 /* nothing to do */
  516                 return;
  517         }
  518         if (usbd_clear_stall_callback(xfer, xfer_other)) {
  519                 DPRINTFN(5, "f=%p: stall cleared\n", f);
  520                 f->flag_stall = 0;
  521                 usbd_transfer_start(xfer_other);
  522         }
  523 }
  524 
  525 static void
  526 ugen_isoc_read_callback(struct usb_xfer *xfer, usb_error_t error)
  527 {
  528         struct usb_fifo *f = usbd_xfer_softc(xfer);
  529         usb_frlength_t offset;
  530         usb_frcount_t n;
  531 
  532         DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
  533 
  534         switch (USB_GET_STATE(xfer)) {
  535         case USB_ST_TRANSFERRED:
  536 
  537                 DPRINTFN(6, "actlen=%d\n", xfer->actlen);
  538 
  539                 offset = 0;
  540 
  541                 for (n = 0; n != xfer->aframes; n++) {
  542                         usb_fifo_put_data(f, xfer->frbuffers, offset,
  543                             xfer->frlengths[n], 1);
  544                         offset += xfer->max_frame_size;
  545                 }
  546 
  547         case USB_ST_SETUP:
  548 tr_setup:
  549                 for (n = 0; n != xfer->nframes; n++) {
  550                         /* setup size for next transfer */
  551                         usbd_xfer_set_frame_len(xfer, n, xfer->max_frame_size);
  552                 }
  553                 usbd_transfer_submit(xfer);
  554                 break;
  555 
  556         default:                        /* Error */
  557                 if (xfer->error == USB_ERR_CANCELLED) {
  558                         break;
  559                 }
  560                 goto tr_setup;
  561         }
  562 }
  563 
  564 static void
  565 ugen_isoc_write_callback(struct usb_xfer *xfer, usb_error_t error)
  566 {
  567         struct usb_fifo *f = usbd_xfer_softc(xfer);
  568         usb_frlength_t actlen;
  569         usb_frlength_t offset;
  570         usb_frcount_t n;
  571 
  572         DPRINTFN(4, "actlen=%u, aframes=%u\n", xfer->actlen, xfer->aframes);
  573 
  574         switch (USB_GET_STATE(xfer)) {
  575         case USB_ST_TRANSFERRED:
  576         case USB_ST_SETUP:
  577 tr_setup:
  578                 offset = 0;
  579                 for (n = 0; n != xfer->nframes; n++) {
  580                         if (usb_fifo_get_data(f, xfer->frbuffers, offset,
  581                             xfer->max_frame_size, &actlen, 1)) {
  582                                 usbd_xfer_set_frame_len(xfer, n, actlen);
  583                                 offset += actlen;
  584                         } else {
  585                                 break;
  586                         }
  587                 }
  588 
  589                 for (; n != xfer->nframes; n++) {
  590                         /* fill in zero frames */
  591                         usbd_xfer_set_frame_len(xfer, n, 0);
  592                 }
  593                 usbd_transfer_submit(xfer);
  594                 break;
  595 
  596         default:                        /* Error */
  597                 if (xfer->error == USB_ERR_CANCELLED) {
  598                         break;
  599                 }
  600                 goto tr_setup;
  601         }
  602 }
  603 
  604 static int
  605 ugen_set_config(struct usb_fifo *f, uint8_t index)
  606 {
  607         DPRINTFN(2, "index %u\n", index);
  608 
  609         if (f->udev->flags.usb_mode != USB_MODE_HOST) {
  610                 /* not possible in device side mode */
  611                 return (ENOTTY);
  612         }
  613         if (f->udev->curr_config_index == index) {
  614                 /* no change needed */
  615                 return (0);
  616         }
  617         /* make sure all FIFO's are gone */
  618         /* else there can be a deadlock */
  619         if (ugen_fs_uninit(f)) {
  620                 /* ignore any errors */
  621                 DPRINTFN(6, "no FIFOs\n");
  622         }
  623         /* change setting - will free generic FIFOs, if any */
  624         if (usbd_set_config_index(f->udev, index)) {
  625                 return (EIO);
  626         }
  627         /* probe and attach */
  628         if (usb_probe_and_attach(f->udev, USB_IFACE_INDEX_ANY)) {
  629                 return (EIO);
  630         }
  631         return (0);
  632 }
  633 
  634 static int
  635 ugen_set_interface(struct usb_fifo *f,
  636     uint8_t iface_index, uint8_t alt_index)
  637 {
  638         DPRINTFN(2, "%u, %u\n", iface_index, alt_index);
  639 
  640         if (f->udev->flags.usb_mode != USB_MODE_HOST) {
  641                 /* not possible in device side mode */
  642                 return (ENOTTY);
  643         }
  644         /* make sure all FIFO's are gone */
  645         /* else there can be a deadlock */
  646         if (ugen_fs_uninit(f)) {
  647                 /* ignore any errors */
  648                 DPRINTFN(6, "no FIFOs\n");
  649         }
  650         /* change setting - will free generic FIFOs, if any */
  651         if (usbd_set_alt_interface_index(f->udev, iface_index, alt_index)) {
  652                 return (EIO);
  653         }
  654         /* probe and attach */
  655         if (usb_probe_and_attach(f->udev, iface_index)) {
  656                 return (EIO);
  657         }
  658         return (0);
  659 }
  660 
  661 /*------------------------------------------------------------------------*
  662  *      ugen_get_cdesc
  663  *
  664  * This function will retrieve the complete configuration descriptor
  665  * at the given index.
  666  *------------------------------------------------------------------------*/
  667 static int
  668 ugen_get_cdesc(struct usb_fifo *f, struct usb_gen_descriptor *ugd)
  669 {
  670         struct usb_config_descriptor *cdesc;
  671         struct usb_device *udev = f->udev;
  672         int error;
  673         uint16_t len;
  674         uint8_t free_data;
  675 
  676         DPRINTFN(6, "\n");
  677 
  678         if (ugd->ugd_data == NULL) {
  679                 /* userland pointer should not be zero */
  680                 return (EINVAL);
  681         }
  682         if ((ugd->ugd_config_index == USB_UNCONFIG_INDEX) ||
  683             (ugd->ugd_config_index == udev->curr_config_index)) {
  684                 cdesc = usbd_get_config_descriptor(udev);
  685                 if (cdesc == NULL) {
  686                         return (ENXIO);
  687                 }
  688                 free_data = 0;
  689 
  690         } else {
  691                 if (usbd_req_get_config_desc_full(udev,
  692                     NULL, &cdesc, M_USBDEV,
  693                     ugd->ugd_config_index)) {
  694                         return (ENXIO);
  695                 }
  696                 free_data = 1;
  697         }
  698 
  699         len = UGETW(cdesc->wTotalLength);
  700         if (len > ugd->ugd_maxlen) {
  701                 len = ugd->ugd_maxlen;
  702         }
  703         DPRINTFN(6, "len=%u\n", len);
  704 
  705         ugd->ugd_actlen = len;
  706         ugd->ugd_offset = 0;
  707 
  708         error = copyout(cdesc, ugd->ugd_data, len);
  709 
  710         if (free_data) {
  711                 free(cdesc, M_USBDEV);
  712         }
  713         return (error);
  714 }
  715 
  716 static int
  717 ugen_get_sdesc(struct usb_fifo *f, struct usb_gen_descriptor *ugd)
  718 {
  719         void *ptr = f->udev->bus->scratch[0].data;
  720         uint16_t size = sizeof(f->udev->bus->scratch[0].data);
  721         int error;
  722 
  723         if (usbd_req_get_string_desc(f->udev, NULL, ptr,
  724             size, ugd->ugd_lang_id, ugd->ugd_string_index)) {
  725                 error = EINVAL;
  726         } else {
  727 
  728                 if (size > ((uint8_t *)ptr)[0]) {
  729                         size = ((uint8_t *)ptr)[0];
  730                 }
  731                 if (size > ugd->ugd_maxlen) {
  732                         size = ugd->ugd_maxlen;
  733                 }
  734                 ugd->ugd_actlen = size;
  735                 ugd->ugd_offset = 0;
  736 
  737                 error = copyout(ptr, ugd->ugd_data, size);
  738         }
  739         return (error);
  740 }
  741 
  742 /*------------------------------------------------------------------------*
  743  *      ugen_get_iface_driver
  744  *
  745  * This function generates an USB interface description for userland.
  746  *
  747  * Returns:
  748  *    0: Success
  749  * Else: Failure
  750  *------------------------------------------------------------------------*/
  751 static int
  752 ugen_get_iface_driver(struct usb_fifo *f, struct usb_gen_descriptor *ugd)
  753 {
  754         struct usb_device *udev = f->udev;
  755         struct usb_interface *iface;
  756         const char *ptr;
  757         const char *desc;
  758         unsigned int len;
  759         unsigned int maxlen;
  760         char buf[128];
  761         int error;
  762 
  763         DPRINTFN(6, "\n");
  764 
  765         if ((ugd->ugd_data == NULL) || (ugd->ugd_maxlen == 0)) {
  766                 /* userland pointer should not be zero */
  767                 return (EINVAL);
  768         }
  769 
  770         iface = usbd_get_iface(udev, ugd->ugd_iface_index);
  771         if ((iface == NULL) || (iface->idesc == NULL)) {
  772                 /* invalid interface index */
  773                 return (EINVAL);
  774         }
  775 
  776         /* read out device nameunit string, if any */
  777         if ((iface->subdev != NULL) &&
  778             device_is_attached(iface->subdev) &&
  779             (ptr = device_get_nameunit(iface->subdev)) &&
  780             (desc = device_get_desc(iface->subdev))) {
  781 
  782                 /* print description */
  783                 snprintf(buf, sizeof(buf), "%s: <%s>", ptr, desc);
  784 
  785                 /* range checks */
  786                 maxlen = ugd->ugd_maxlen - 1;
  787                 len = strlen(buf);
  788                 if (len > maxlen)
  789                         len = maxlen;
  790 
  791                 /* update actual length, including terminating zero */
  792                 ugd->ugd_actlen = len + 1;
  793 
  794                 /* copy out interface description */
  795                 error = copyout(buf, ugd->ugd_data, ugd->ugd_actlen);
  796         } else {
  797                 /* zero length string is default */
  798                 error = copyout("", ugd->ugd_data, 1);
  799         }
  800         return (error);
  801 }
  802 
  803 /*------------------------------------------------------------------------*
  804  *      usb_gen_fill_deviceinfo
  805  *
  806  * This function dumps information about an USB device to the
  807  * structure pointed to by the "di" argument.
  808  *
  809  * Returns:
  810  *    0: Success
  811  * Else: Failure
  812  *------------------------------------------------------------------------*/
  813 static int
  814 usb_gen_fill_deviceinfo(struct usb_fifo *f, struct usb_device_info *di)
  815 {
  816         struct usb_device *udev;
  817         struct usb_device *hub;
  818 
  819         udev = f->udev;
  820 
  821         bzero(di, sizeof(di[0]));
  822 
  823         di->udi_bus = device_get_unit(udev->bus->bdev);
  824         di->udi_addr = udev->address;
  825         di->udi_index = udev->device_index;
  826         strlcpy(di->udi_serial, udev->serial, sizeof(di->udi_serial));
  827         strlcpy(di->udi_vendor, udev->manufacturer, sizeof(di->udi_vendor));
  828         strlcpy(di->udi_product, udev->product, sizeof(di->udi_product));
  829         usb_printbcd(di->udi_release, sizeof(di->udi_release),
  830             UGETW(udev->ddesc.bcdDevice));
  831         di->udi_vendorNo = UGETW(udev->ddesc.idVendor);
  832         di->udi_productNo = UGETW(udev->ddesc.idProduct);
  833         di->udi_releaseNo = UGETW(udev->ddesc.bcdDevice);
  834         di->udi_class = udev->ddesc.bDeviceClass;
  835         di->udi_subclass = udev->ddesc.bDeviceSubClass;
  836         di->udi_protocol = udev->ddesc.bDeviceProtocol;
  837         di->udi_config_no = udev->curr_config_no;
  838         di->udi_config_index = udev->curr_config_index;
  839         di->udi_power = udev->flags.self_powered ? 0 : udev->power;
  840         di->udi_speed = udev->speed;
  841         di->udi_mode = udev->flags.usb_mode;
  842         di->udi_power_mode = udev->power_mode;
  843         di->udi_suspended = udev->flags.peer_suspended;
  844 
  845         hub = udev->parent_hub;
  846         if (hub) {
  847                 di->udi_hubaddr = hub->address;
  848                 di->udi_hubindex = hub->device_index;
  849                 di->udi_hubport = udev->port_no;
  850         }
  851         return (0);
  852 }
  853 
  854 /*------------------------------------------------------------------------*
  855  *      ugen_check_request
  856  *
  857  * Return values:
  858  * 0: Access allowed
  859  * Else: No access
  860  *------------------------------------------------------------------------*/
  861 static int
  862 ugen_check_request(struct usb_device *udev, struct usb_device_request *req)
  863 {
  864         struct usb_endpoint *ep;
  865         int error;
  866 
  867         /*
  868          * Avoid requests that would damage the bus integrity:
  869          */
  870         if (((req->bmRequestType == UT_WRITE_DEVICE) &&
  871             (req->bRequest == UR_SET_ADDRESS)) ||
  872             ((req->bmRequestType == UT_WRITE_DEVICE) &&
  873             (req->bRequest == UR_SET_CONFIG)) ||
  874             ((req->bmRequestType == UT_WRITE_INTERFACE) &&
  875             (req->bRequest == UR_SET_INTERFACE))) {
  876                 /*
  877                  * These requests can be useful for testing USB drivers.
  878                  */
  879                 error = priv_check(curthread, PRIV_DRIVER);
  880                 if (error) {
  881                         return (error);
  882                 }
  883         }
  884         /*
  885          * Special case - handle clearing of stall
  886          */
  887         if (req->bmRequestType == UT_WRITE_ENDPOINT) {
  888 
  889                 ep = usbd_get_ep_by_addr(udev, req->wIndex[0]);
  890                 if (ep == NULL) {
  891                         return (EINVAL);
  892                 }
  893                 if ((req->bRequest == UR_CLEAR_FEATURE) &&
  894                     (UGETW(req->wValue) == UF_ENDPOINT_HALT)) {
  895                         usbd_clear_data_toggle(udev, ep);
  896                 }
  897         }
  898         /* TODO: add more checks to verify the interface index */
  899 
  900         return (0);
  901 }
  902 
  903 int
  904 ugen_do_request(struct usb_fifo *f, struct usb_ctl_request *ur)
  905 {
  906         int error;
  907         uint16_t len;
  908         uint16_t actlen;
  909 
  910         if (ugen_check_request(f->udev, &ur->ucr_request)) {
  911                 return (EPERM);
  912         }
  913         len = UGETW(ur->ucr_request.wLength);
  914 
  915         /* check if "ucr_data" is valid */
  916         if (len != 0) {
  917                 if (ur->ucr_data == NULL) {
  918                         return (EFAULT);
  919                 }
  920         }
  921         /* do the USB request */
  922         error = usbd_do_request_flags
  923             (f->udev, NULL, &ur->ucr_request, ur->ucr_data,
  924             (ur->ucr_flags & USB_SHORT_XFER_OK) |
  925             USB_USER_DATA_PTR, &actlen,
  926             USB_DEFAULT_TIMEOUT);
  927 
  928         ur->ucr_actlen = actlen;
  929 
  930         if (error) {
  931                 error = EIO;
  932         }
  933         return (error);
  934 }
  935 
  936 /*------------------------------------------------------------------------
  937  *      ugen_re_enumerate
  938  *------------------------------------------------------------------------*/
  939 static int
  940 ugen_re_enumerate(struct usb_fifo *f)
  941 {
  942         struct usb_device *udev = f->udev;
  943         int error;
  944 
  945         /*
  946          * This request can be useful for testing USB drivers:
  947          */
  948         error = priv_check(curthread, PRIV_DRIVER);
  949         if (error) {
  950                 return (error);
  951         }
  952         /* get the device unconfigured */
  953         error = ugen_set_config(f, USB_UNCONFIG_INDEX);
  954         if (error) {
  955                 return (error);
  956         }
  957         /* do a bus-reset */
  958         mtx_lock(f->priv_mtx);
  959         error = usbd_req_re_enumerate(udev, f->priv_mtx);
  960         mtx_unlock(f->priv_mtx);
  961 
  962         if (error) {
  963                 return (ENXIO);
  964         }
  965         /* restore configuration to index 0 */
  966         error = ugen_set_config(f, 0);
  967         if (error) {
  968                 return (error);
  969         }
  970         return (0);
  971 }
  972 
  973 int
  974 ugen_fs_uninit(struct usb_fifo *f)
  975 {
  976         if (f->fs_xfer == NULL) {
  977                 return (EINVAL);
  978         }
  979         usbd_transfer_unsetup(f->fs_xfer, f->fs_ep_max);
  980         free(f->fs_xfer, M_USB);
  981         f->fs_xfer = NULL;
  982         f->fs_ep_max = 0;
  983         f->fs_ep_ptr = NULL;
  984         f->flag_iscomplete = 0;
  985         usb_fifo_free_buffer(f);
  986         return (0);
  987 }
  988 
  989 static uint8_t
  990 ugen_fs_get_complete(struct usb_fifo *f, uint8_t *pindex)
  991 {
  992         struct usb_mbuf *m;
  993 
  994         USB_IF_DEQUEUE(&f->used_q, m);
  995 
  996         if (m) {
  997                 *pindex = *((uint8_t *)(m->cur_data_ptr));
  998 
  999                 USB_IF_ENQUEUE(&f->free_q, m);
 1000 
 1001                 return (0);             /* success */
 1002         } else {
 1003 
 1004                 *pindex = 0;            /* fix compiler warning */
 1005 
 1006                 f->flag_iscomplete = 0;
 1007         }
 1008         return (1);                     /* failure */
 1009 }
 1010 
 1011 static void
 1012 ugen_fs_set_complete(struct usb_fifo *f, uint8_t index)
 1013 {
 1014         struct usb_mbuf *m;
 1015 
 1016         USB_IF_DEQUEUE(&f->free_q, m);
 1017 
 1018         if (m == NULL) {
 1019                 /* can happen during close */
 1020                 DPRINTF("out of buffers\n");
 1021                 return;
 1022         }
 1023         USB_MBUF_RESET(m);
 1024 
 1025         *((uint8_t *)(m->cur_data_ptr)) = index;
 1026 
 1027         USB_IF_ENQUEUE(&f->used_q, m);
 1028 
 1029         f->flag_iscomplete = 1;
 1030 
 1031         usb_fifo_wakeup(f);
 1032 }
 1033 
 1034 static int
 1035 ugen_fs_copy_in(struct usb_fifo *f, uint8_t ep_index)
 1036 {
 1037         struct usb_device_request *req;
 1038         struct usb_xfer *xfer;
 1039         struct usb_fs_endpoint fs_ep;
 1040         void *uaddr;                    /* userland pointer */
 1041         void *kaddr;
 1042         usb_frlength_t offset;
 1043         usb_frlength_t rem;
 1044         usb_frcount_t n;
 1045         uint32_t length;
 1046         int error;
 1047         uint8_t isread;
 1048 
 1049         if (ep_index >= f->fs_ep_max) {
 1050                 return (EINVAL);
 1051         }
 1052         xfer = f->fs_xfer[ep_index];
 1053         if (xfer == NULL) {
 1054                 return (EINVAL);
 1055         }
 1056         mtx_lock(f->priv_mtx);
 1057         if (usbd_transfer_pending(xfer)) {
 1058                 mtx_unlock(f->priv_mtx);
 1059                 return (EBUSY);         /* should not happen */
 1060         }
 1061         mtx_unlock(f->priv_mtx);
 1062 
 1063         error = copyin(f->fs_ep_ptr +
 1064             ep_index, &fs_ep, sizeof(fs_ep));
 1065         if (error) {
 1066                 return (error);
 1067         }
 1068         /* security checks */
 1069 
 1070         if (fs_ep.nFrames > xfer->max_frame_count) {
 1071                 xfer->error = USB_ERR_INVAL;
 1072                 goto complete;
 1073         }
 1074         if (fs_ep.nFrames == 0) {
 1075                 xfer->error = USB_ERR_INVAL;
 1076                 goto complete;
 1077         }
 1078         error = copyin(fs_ep.ppBuffer,
 1079             &uaddr, sizeof(uaddr));
 1080         if (error) {
 1081                 return (error);
 1082         }
 1083         /* reset first frame */
 1084         usbd_xfer_set_frame_offset(xfer, 0, 0);
 1085 
 1086         if (xfer->flags_int.control_xfr) {
 1087 
 1088                 req = xfer->frbuffers[0].buffer;
 1089 
 1090                 error = copyin(fs_ep.pLength,
 1091                     &length, sizeof(length));
 1092                 if (error) {
 1093                         return (error);
 1094                 }
 1095                 if (length != sizeof(*req)) {
 1096                         xfer->error = USB_ERR_INVAL;
 1097                         goto complete;
 1098                 }
 1099                 if (length != 0) {
 1100                         error = copyin(uaddr, req, length);
 1101                         if (error) {
 1102                                 return (error);
 1103                         }
 1104                 }
 1105                 if (ugen_check_request(f->udev, req)) {
 1106                         xfer->error = USB_ERR_INVAL;
 1107                         goto complete;
 1108                 }
 1109                 usbd_xfer_set_frame_len(xfer, 0, length);
 1110 
 1111                 /* Host mode only ! */
 1112                 if ((req->bmRequestType &
 1113                     (UT_READ | UT_WRITE)) == UT_READ) {
 1114                         isread = 1;
 1115                 } else {
 1116                         isread = 0;
 1117                 }
 1118                 n = 1;
 1119                 offset = sizeof(*req);
 1120 
 1121         } else {
 1122                 /* Device and Host mode */
 1123                 if (USB_GET_DATA_ISREAD(xfer)) {
 1124                         isread = 1;
 1125                 } else {
 1126                         isread = 0;
 1127                 }
 1128                 n = 0;
 1129                 offset = 0;
 1130         }
 1131 
 1132         rem = usbd_xfer_max_len(xfer);
 1133         xfer->nframes = fs_ep.nFrames;
 1134         xfer->timeout = fs_ep.timeout;
 1135         if (xfer->timeout > 65535) {
 1136                 xfer->timeout = 65535;
 1137         }
 1138         if (fs_ep.flags & USB_FS_FLAG_SINGLE_SHORT_OK)
 1139                 xfer->flags.short_xfer_ok = 1;
 1140         else
 1141                 xfer->flags.short_xfer_ok = 0;
 1142 
 1143         if (fs_ep.flags & USB_FS_FLAG_MULTI_SHORT_OK)
 1144                 xfer->flags.short_frames_ok = 1;
 1145         else
 1146                 xfer->flags.short_frames_ok = 0;
 1147 
 1148         if (fs_ep.flags & USB_FS_FLAG_FORCE_SHORT)
 1149                 xfer->flags.force_short_xfer = 1;
 1150         else
 1151                 xfer->flags.force_short_xfer = 0;
 1152 
 1153         if (fs_ep.flags & USB_FS_FLAG_CLEAR_STALL)
 1154                 usbd_xfer_set_stall(xfer);
 1155         else
 1156                 xfer->flags.stall_pipe = 0;
 1157 
 1158         for (; n != xfer->nframes; n++) {
 1159 
 1160                 error = copyin(fs_ep.pLength + n,
 1161                     &length, sizeof(length));
 1162                 if (error) {
 1163                         break;
 1164                 }
 1165                 usbd_xfer_set_frame_len(xfer, n, length);
 1166 
 1167                 if (length > rem) {
 1168                         xfer->error = USB_ERR_INVAL;
 1169                         goto complete;
 1170                 }
 1171                 rem -= length;
 1172 
 1173                 if (!isread) {
 1174 
 1175                         /* we need to know the source buffer */
 1176                         error = copyin(fs_ep.ppBuffer + n,
 1177                             &uaddr, sizeof(uaddr));
 1178                         if (error) {
 1179                                 break;
 1180                         }
 1181                         if (xfer->flags_int.isochronous_xfr) {
 1182                                 /* get kernel buffer address */
 1183                                 kaddr = xfer->frbuffers[0].buffer;
 1184                                 kaddr = USB_ADD_BYTES(kaddr, offset);
 1185                         } else {
 1186                                 /* set current frame offset */
 1187                                 usbd_xfer_set_frame_offset(xfer, offset, n);
 1188 
 1189                                 /* get kernel buffer address */
 1190                                 kaddr = xfer->frbuffers[n].buffer;
 1191                         }
 1192 
 1193                         /* move data */
 1194                         error = copyin(uaddr, kaddr, length);
 1195                         if (error) {
 1196                                 break;
 1197                         }
 1198                 }
 1199                 offset += length;
 1200         }
 1201         return (error);
 1202 
 1203 complete:
 1204         mtx_lock(f->priv_mtx);
 1205         ugen_fs_set_complete(f, ep_index);
 1206         mtx_unlock(f->priv_mtx);
 1207         return (0);
 1208 }
 1209 
 1210 static int
 1211 ugen_fs_copy_out(struct usb_fifo *f, uint8_t ep_index)
 1212 {
 1213         struct usb_device_request *req;
 1214         struct usb_xfer *xfer;
 1215         struct usb_fs_endpoint fs_ep;
 1216         struct usb_fs_endpoint *fs_ep_uptr;     /* userland ptr */
 1217         void *uaddr;                    /* userland ptr */
 1218         void *kaddr;
 1219         usb_frlength_t offset;
 1220         usb_frlength_t rem;
 1221         usb_frcount_t n;
 1222         uint32_t length;
 1223         uint32_t temp;
 1224         int error;
 1225         uint8_t isread;
 1226 
 1227         if (ep_index >= f->fs_ep_max)
 1228                 return (EINVAL);
 1229 
 1230         xfer = f->fs_xfer[ep_index];
 1231         if (xfer == NULL)
 1232                 return (EINVAL);
 1233 
 1234         mtx_lock(f->priv_mtx);
 1235         if (usbd_transfer_pending(xfer)) {
 1236                 mtx_unlock(f->priv_mtx);
 1237                 return (EBUSY);         /* should not happen */
 1238         }
 1239         mtx_unlock(f->priv_mtx);
 1240 
 1241         fs_ep_uptr = f->fs_ep_ptr + ep_index;
 1242         error = copyin(fs_ep_uptr, &fs_ep, sizeof(fs_ep));
 1243         if (error) {
 1244                 return (error);
 1245         }
 1246         fs_ep.status = xfer->error;
 1247         fs_ep.aFrames = xfer->aframes;
 1248         fs_ep.isoc_time_complete = xfer->isoc_time_complete;
 1249         if (xfer->error) {
 1250                 goto complete;
 1251         }
 1252         if (xfer->flags_int.control_xfr) {
 1253                 req = xfer->frbuffers[0].buffer;
 1254 
 1255                 /* Host mode only ! */
 1256                 if ((req->bmRequestType & (UT_READ | UT_WRITE)) == UT_READ) {
 1257                         isread = 1;
 1258                 } else {
 1259                         isread = 0;
 1260                 }
 1261                 if (xfer->nframes == 0)
 1262                         n = 0;          /* should never happen */
 1263                 else
 1264                         n = 1;
 1265         } else {
 1266                 /* Device and Host mode */
 1267                 if (USB_GET_DATA_ISREAD(xfer)) {
 1268                         isread = 1;
 1269                 } else {
 1270                         isread = 0;
 1271                 }
 1272                 n = 0;
 1273         }
 1274 
 1275         /* Update lengths and copy out data */
 1276 
 1277         rem = usbd_xfer_max_len(xfer);
 1278         offset = 0;
 1279 
 1280         for (; n != xfer->nframes; n++) {
 1281 
 1282                 /* get initial length into "temp" */
 1283                 error = copyin(fs_ep.pLength + n,
 1284                     &temp, sizeof(temp));
 1285                 if (error) {
 1286                         return (error);
 1287                 }
 1288                 if (temp > rem) {
 1289                         /* the userland length has been corrupted */
 1290                         DPRINTF("corrupt userland length "
 1291                             "%u > %u\n", temp, rem);
 1292                         fs_ep.status = USB_ERR_INVAL;
 1293                         goto complete;
 1294                 }
 1295                 rem -= temp;
 1296 
 1297                 /* get actual transfer length */
 1298                 length = xfer->frlengths[n];
 1299                 if (length > temp) {
 1300                         /* data overflow */
 1301                         fs_ep.status = USB_ERR_INVAL;
 1302                         DPRINTF("data overflow %u > %u\n",
 1303                             length, temp);
 1304                         goto complete;
 1305                 }
 1306                 if (isread) {
 1307 
 1308                         /* we need to know the destination buffer */
 1309                         error = copyin(fs_ep.ppBuffer + n,
 1310                             &uaddr, sizeof(uaddr));
 1311                         if (error) {
 1312                                 return (error);
 1313                         }
 1314                         if (xfer->flags_int.isochronous_xfr) {
 1315                                 /* only one frame buffer */
 1316                                 kaddr = USB_ADD_BYTES(
 1317                                     xfer->frbuffers[0].buffer, offset);
 1318                         } else {
 1319                                 /* multiple frame buffers */
 1320                                 kaddr = xfer->frbuffers[n].buffer;
 1321                         }
 1322 
 1323                         /* move data */
 1324                         error = copyout(kaddr, uaddr, length);
 1325                         if (error) {
 1326                                 return (error);
 1327                         }
 1328                 }
 1329                 /*
 1330                  * Update offset according to initial length, which is
 1331                  * needed by isochronous transfers!
 1332                  */
 1333                 offset += temp;
 1334 
 1335                 /* update length */
 1336                 error = copyout(&length,
 1337                     fs_ep.pLength + n, sizeof(length));
 1338                 if (error) {
 1339                         return (error);
 1340                 }
 1341         }
 1342 
 1343 complete:
 1344         /* update "aFrames" */
 1345         error = copyout(&fs_ep.aFrames, &fs_ep_uptr->aFrames,
 1346             sizeof(fs_ep.aFrames));
 1347         if (error)
 1348                 goto done;
 1349 
 1350         /* update "isoc_time_complete" */
 1351         error = copyout(&fs_ep.isoc_time_complete,
 1352             &fs_ep_uptr->isoc_time_complete,
 1353             sizeof(fs_ep.isoc_time_complete));
 1354         if (error)
 1355                 goto done;
 1356         /* update "status" */
 1357         error = copyout(&fs_ep.status, &fs_ep_uptr->status,
 1358             sizeof(fs_ep.status));
 1359 done:
 1360         return (error);
 1361 }
 1362 
 1363 static uint8_t
 1364 ugen_fifo_in_use(struct usb_fifo *f, int fflags)
 1365 {
 1366         struct usb_fifo *f_rx;
 1367         struct usb_fifo *f_tx;
 1368 
 1369         f_rx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_RX];
 1370         f_tx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_TX];
 1371 
 1372         if ((fflags & FREAD) && f_rx &&
 1373             (f_rx->xfer[0] || f_rx->xfer[1])) {
 1374                 return (1);             /* RX FIFO in use */
 1375         }
 1376         if ((fflags & FWRITE) && f_tx &&
 1377             (f_tx->xfer[0] || f_tx->xfer[1])) {
 1378                 return (1);             /* TX FIFO in use */
 1379         }
 1380         return (0);                     /* not in use */
 1381 }
 1382 
 1383 static int
 1384 ugen_ioctl(struct usb_fifo *f, u_long cmd, void *addr, int fflags)
 1385 {
 1386         struct usb_config usb_config[1];
 1387         struct usb_device_request req;
 1388         union {
 1389                 struct usb_fs_complete *pcomp;
 1390                 struct usb_fs_start *pstart;
 1391                 struct usb_fs_stop *pstop;
 1392                 struct usb_fs_open *popen;
 1393                 struct usb_fs_close *pclose;
 1394                 struct usb_fs_clear_stall_sync *pstall;
 1395                 void   *addr;
 1396         }     u;
 1397         struct usb_endpoint *ep;
 1398         struct usb_endpoint_descriptor *ed;
 1399         int error = 0;
 1400         uint8_t iface_index;
 1401         uint8_t isread;
 1402         uint8_t ep_index;
 1403 
 1404         u.addr = addr;
 1405 
 1406         DPRINTFN(6, "cmd=0x%08lx\n", cmd);
 1407 
 1408         switch (cmd) {
 1409         case USB_FS_COMPLETE:
 1410                 mtx_lock(f->priv_mtx);
 1411                 error = ugen_fs_get_complete(f, &ep_index);
 1412                 mtx_unlock(f->priv_mtx);
 1413 
 1414                 if (error) {
 1415                         error = EBUSY;
 1416                         break;
 1417                 }
 1418                 u.pcomp->ep_index = ep_index;
 1419                 error = ugen_fs_copy_out(f, u.pcomp->ep_index);
 1420                 break;
 1421 
 1422         case USB_FS_START:
 1423                 error = ugen_fs_copy_in(f, u.pstart->ep_index);
 1424                 if (error) {
 1425                         break;
 1426                 }
 1427                 mtx_lock(f->priv_mtx);
 1428                 usbd_transfer_start(f->fs_xfer[u.pstart->ep_index]);
 1429                 mtx_unlock(f->priv_mtx);
 1430                 break;
 1431 
 1432         case USB_FS_STOP:
 1433                 if (u.pstop->ep_index >= f->fs_ep_max) {
 1434                         error = EINVAL;
 1435                         break;
 1436                 }
 1437                 mtx_lock(f->priv_mtx);
 1438                 usbd_transfer_stop(f->fs_xfer[u.pstop->ep_index]);
 1439                 mtx_unlock(f->priv_mtx);
 1440                 break;
 1441 
 1442         case USB_FS_OPEN:
 1443                 if (u.popen->ep_index >= f->fs_ep_max) {
 1444                         error = EINVAL;
 1445                         break;
 1446                 }
 1447                 if (f->fs_xfer[u.popen->ep_index] != NULL) {
 1448                         error = EBUSY;
 1449                         break;
 1450                 }
 1451                 if (u.popen->max_bufsize > USB_FS_MAX_BUFSIZE) {
 1452                         u.popen->max_bufsize = USB_FS_MAX_BUFSIZE;
 1453                 }
 1454                 if (u.popen->max_frames > USB_FS_MAX_FRAMES) {
 1455                         u.popen->max_frames = USB_FS_MAX_FRAMES;
 1456                         break;
 1457                 }
 1458                 if (u.popen->max_frames == 0) {
 1459                         error = EINVAL;
 1460                         break;
 1461                 }
 1462                 ep = usbd_get_ep_by_addr(f->udev, u.popen->ep_no);
 1463                 if (ep == NULL) {
 1464                         error = EINVAL;
 1465                         break;
 1466                 }
 1467                 ed = ep->edesc;
 1468                 if (ed == NULL) {
 1469                         error = ENXIO;
 1470                         break;
 1471                 }
 1472                 iface_index = ep->iface_index;
 1473 
 1474                 bzero(usb_config, sizeof(usb_config));
 1475 
 1476                 usb_config[0].type = ed->bmAttributes & UE_XFERTYPE;
 1477                 usb_config[0].endpoint = ed->bEndpointAddress & UE_ADDR;
 1478                 usb_config[0].direction = ed->bEndpointAddress & (UE_DIR_OUT | UE_DIR_IN);
 1479                 usb_config[0].interval = USB_DEFAULT_INTERVAL;
 1480                 usb_config[0].flags.proxy_buffer = 1;
 1481                 usb_config[0].callback = &ugen_default_fs_callback;
 1482                 usb_config[0].timeout = 0;      /* no timeout */
 1483                 usb_config[0].frames = u.popen->max_frames;
 1484                 usb_config[0].bufsize = u.popen->max_bufsize;
 1485                 usb_config[0].usb_mode = USB_MODE_DUAL; /* both modes */
 1486 
 1487                 if (usb_config[0].type == UE_CONTROL) {
 1488                         if (f->udev->flags.usb_mode != USB_MODE_HOST) {
 1489                                 error = EINVAL;
 1490                                 break;
 1491                         }
 1492                 } else {
 1493 
 1494                         isread = ((usb_config[0].endpoint &
 1495                             (UE_DIR_IN | UE_DIR_OUT)) == UE_DIR_IN);
 1496 
 1497                         if (f->udev->flags.usb_mode != USB_MODE_HOST) {
 1498                                 isread = !isread;
 1499                         }
 1500                         /* check permissions */
 1501                         if (isread) {
 1502                                 if (!(fflags & FREAD)) {
 1503                                         error = EPERM;
 1504                                         break;
 1505                                 }
 1506                         } else {
 1507                                 if (!(fflags & FWRITE)) {
 1508                                         error = EPERM;
 1509                                         break;
 1510                                 }
 1511                         }
 1512                 }
 1513                 error = usbd_transfer_setup(f->udev, &iface_index,
 1514                     f->fs_xfer + u.popen->ep_index, usb_config, 1,
 1515                     f, f->priv_mtx);
 1516                 if (error == 0) {
 1517                         /* update maximums */
 1518                         u.popen->max_packet_length =
 1519                             f->fs_xfer[u.popen->ep_index]->max_frame_size;
 1520                         u.popen->max_bufsize =
 1521                             f->fs_xfer[u.popen->ep_index]->max_data_length;
 1522                         f->fs_xfer[u.popen->ep_index]->priv_fifo =
 1523                             ((uint8_t *)0) + u.popen->ep_index;
 1524                 } else {
 1525                         error = ENOMEM;
 1526                 }
 1527                 break;
 1528 
 1529         case USB_FS_CLOSE:
 1530                 if (u.pclose->ep_index >= f->fs_ep_max) {
 1531                         error = EINVAL;
 1532                         break;
 1533                 }
 1534                 if (f->fs_xfer[u.pclose->ep_index] == NULL) {
 1535                         error = EINVAL;
 1536                         break;
 1537                 }
 1538                 usbd_transfer_unsetup(f->fs_xfer + u.pclose->ep_index, 1);
 1539                 break;
 1540 
 1541         case USB_FS_CLEAR_STALL_SYNC:
 1542                 if (u.pstall->ep_index >= f->fs_ep_max) {
 1543                         error = EINVAL;
 1544                         break;
 1545                 }
 1546                 if (f->fs_xfer[u.pstall->ep_index] == NULL) {
 1547                         error = EINVAL;
 1548                         break;
 1549                 }
 1550                 if (f->udev->flags.usb_mode != USB_MODE_HOST) {
 1551                         error = EINVAL;
 1552                         break;
 1553                 }
 1554                 mtx_lock(f->priv_mtx);
 1555                 error = usbd_transfer_pending(f->fs_xfer[u.pstall->ep_index]);
 1556                 mtx_unlock(f->priv_mtx);
 1557 
 1558                 if (error) {
 1559                         return (EBUSY);
 1560                 }
 1561                 ep = f->fs_xfer[u.pstall->ep_index]->endpoint;
 1562 
 1563                 /* setup a clear-stall packet */
 1564                 req.bmRequestType = UT_WRITE_ENDPOINT;
 1565                 req.bRequest = UR_CLEAR_FEATURE;
 1566                 USETW(req.wValue, UF_ENDPOINT_HALT);
 1567                 req.wIndex[0] = ep->edesc->bEndpointAddress;
 1568                 req.wIndex[1] = 0;
 1569                 USETW(req.wLength, 0);
 1570 
 1571                 error = usbd_do_request(f->udev, NULL, &req, NULL);
 1572                 if (error == 0) {
 1573                         usbd_clear_data_toggle(f->udev, ep);
 1574                 } else {
 1575                         error = ENXIO;
 1576                 }
 1577                 break;
 1578 
 1579         default:
 1580                 error = ENOIOCTL;
 1581                 break;
 1582         }
 1583 
 1584         DPRINTFN(6, "error=%d\n", error);
 1585 
 1586         return (error);
 1587 }
 1588 
 1589 static int
 1590 ugen_set_short_xfer(struct usb_fifo *f, void *addr)
 1591 {
 1592         uint8_t t;
 1593 
 1594         if (*(int *)addr)
 1595                 t = 1;
 1596         else
 1597                 t = 0;
 1598 
 1599         if (f->flag_short == t) {
 1600                 /* same value like before - accept */
 1601                 return (0);
 1602         }
 1603         if (f->xfer[0] || f->xfer[1]) {
 1604                 /* cannot change this during transfer */
 1605                 return (EBUSY);
 1606         }
 1607         f->flag_short = t;
 1608         return (0);
 1609 }
 1610 
 1611 static int
 1612 ugen_set_timeout(struct usb_fifo *f, void *addr)
 1613 {
 1614         f->timeout = *(int *)addr;
 1615         if (f->timeout > 65535) {
 1616                 /* limit user input */
 1617                 f->timeout = 65535;
 1618         }
 1619         return (0);
 1620 }
 1621 
 1622 static int
 1623 ugen_get_frame_size(struct usb_fifo *f, void *addr)
 1624 {
 1625         if (f->xfer[0]) {
 1626                 *(int *)addr = f->xfer[0]->max_frame_size;
 1627         } else {
 1628                 return (EINVAL);
 1629         }
 1630         return (0);
 1631 }
 1632 
 1633 static int
 1634 ugen_set_buffer_size(struct usb_fifo *f, void *addr)
 1635 {
 1636         usb_frlength_t t;
 1637 
 1638         if (*(int *)addr < 0)
 1639                 t = 0;          /* use "wMaxPacketSize" */
 1640         else if (*(int *)addr < (256 * 1024))
 1641                 t = *(int *)addr;
 1642         else
 1643                 t = 256 * 1024;
 1644 
 1645         if (f->bufsize == t) {
 1646                 /* same value like before - accept */
 1647                 return (0);
 1648         }
 1649         if (f->xfer[0] || f->xfer[1]) {
 1650                 /* cannot change this during transfer */
 1651                 return (EBUSY);
 1652         }
 1653         f->bufsize = t;
 1654         return (0);
 1655 }
 1656 
 1657 static int
 1658 ugen_get_buffer_size(struct usb_fifo *f, void *addr)
 1659 {
 1660         *(int *)addr = f->bufsize;
 1661         return (0);
 1662 }
 1663 
 1664 static int
 1665 ugen_get_iface_desc(struct usb_fifo *f,
 1666     struct usb_interface_descriptor *idesc)
 1667 {
 1668         struct usb_interface *iface;
 1669 
 1670         iface = usbd_get_iface(f->udev, f->iface_index);
 1671         if (iface && iface->idesc) {
 1672                 *idesc = *(iface->idesc);
 1673         } else {
 1674                 return (EIO);
 1675         }
 1676         return (0);
 1677 }
 1678 
 1679 static int
 1680 ugen_get_endpoint_desc(struct usb_fifo *f,
 1681     struct usb_endpoint_descriptor *ed)
 1682 {
 1683         struct usb_endpoint *ep;
 1684 
 1685         ep = usb_fifo_softc(f);
 1686 
 1687         if (ep && ep->edesc) {
 1688                 *ed = *ep->edesc;
 1689         } else {
 1690                 return (EINVAL);
 1691         }
 1692         return (0);
 1693 }
 1694 
 1695 static int
 1696 ugen_set_power_mode(struct usb_fifo *f, int mode)
 1697 {
 1698         struct usb_device *udev = f->udev;
 1699         int err;
 1700         uint8_t old_mode;
 1701 
 1702         if ((udev == NULL) ||
 1703             (udev->parent_hub == NULL)) {
 1704                 return (EINVAL);
 1705         }
 1706         err = priv_check(curthread, PRIV_DRIVER);
 1707         if (err)
 1708                 return (err);
 1709 
 1710         /* get old power mode */
 1711         old_mode = udev->power_mode;
 1712 
 1713         /* if no change, then just return */
 1714         if (old_mode == mode)
 1715                 return (0);
 1716 
 1717         switch (mode) {
 1718         case USB_POWER_MODE_OFF:
 1719                 /* get the device unconfigured */
 1720                 err = ugen_set_config(f, USB_UNCONFIG_INDEX);
 1721                 if (err) {
 1722                         DPRINTFN(0, "Could not unconfigure "
 1723                             "device (ignored)\n");
 1724                 }
 1725 
 1726                 /* clear port enable */
 1727                 err = usbd_req_clear_port_feature(udev->parent_hub,
 1728                     NULL, udev->port_no, UHF_PORT_ENABLE);
 1729                 break;
 1730 
 1731         case USB_POWER_MODE_ON:
 1732         case USB_POWER_MODE_SAVE:
 1733                 break;
 1734 
 1735         case USB_POWER_MODE_RESUME:
 1736                 err = usbd_req_clear_port_feature(udev->parent_hub,
 1737                     NULL, udev->port_no, UHF_PORT_SUSPEND);
 1738                 mode = USB_POWER_MODE_SAVE;
 1739                 break;
 1740 
 1741         case USB_POWER_MODE_SUSPEND:
 1742                 err = usbd_req_set_port_feature(udev->parent_hub,
 1743                     NULL, udev->port_no, UHF_PORT_SUSPEND);
 1744                 mode = USB_POWER_MODE_SAVE;
 1745                 break;
 1746 
 1747         default:
 1748                 return (EINVAL);
 1749         }
 1750 
 1751         if (err)
 1752                 return (ENXIO);         /* I/O failure */
 1753 
 1754         /* if we are powered off we need to re-enumerate first */
 1755         if (old_mode == USB_POWER_MODE_OFF) {
 1756                 err = ugen_re_enumerate(f);
 1757                 if (err)
 1758                         return (err);
 1759         }
 1760 
 1761         /* set new power mode */
 1762         usbd_set_power_mode(udev, mode);
 1763 
 1764         return (0);                     /* success */
 1765 }
 1766 
 1767 static int
 1768 ugen_get_power_mode(struct usb_fifo *f)
 1769 {
 1770         struct usb_device *udev = f->udev;
 1771 
 1772         if ((udev == NULL) ||
 1773             (udev->parent_hub == NULL)) {
 1774                 return (USB_POWER_MODE_ON);
 1775         }
 1776         return (udev->power_mode);
 1777 }
 1778 
 1779 static int
 1780 ugen_do_port_feature(struct usb_fifo *f, uint8_t port_no,
 1781     uint8_t set, uint16_t feature)
 1782 {
 1783         struct usb_device *udev = f->udev;
 1784         struct usb_hub *hub;
 1785         int err;
 1786 
 1787         err = priv_check(curthread, PRIV_DRIVER);
 1788         if (err) {
 1789                 return (err);
 1790         }
 1791         if (port_no == 0) {
 1792                 return (EINVAL);
 1793         }
 1794         if ((udev == NULL) ||
 1795             (udev->hub == NULL)) {
 1796                 return (EINVAL);
 1797         }
 1798         hub = udev->hub;
 1799 
 1800         if (port_no > hub->nports) {
 1801                 return (EINVAL);
 1802         }
 1803         if (set)
 1804                 err = usbd_req_set_port_feature(udev,
 1805                     NULL, port_no, feature);
 1806         else
 1807                 err = usbd_req_clear_port_feature(udev,
 1808                     NULL, port_no, feature);
 1809 
 1810         if (err)
 1811                 return (ENXIO);         /* failure */
 1812 
 1813         return (0);                     /* success */
 1814 }
 1815 
 1816 static int
 1817 ugen_iface_ioctl(struct usb_fifo *f, u_long cmd, void *addr, int fflags)
 1818 {
 1819         struct usb_fifo *f_rx;
 1820         struct usb_fifo *f_tx;
 1821         int error = 0;
 1822 
 1823         f_rx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_RX];
 1824         f_tx = f->udev->fifo[(f->fifo_index & ~1) + USB_FIFO_TX];
 1825 
 1826         switch (cmd) {
 1827         case USB_SET_RX_SHORT_XFER:
 1828                 if (fflags & FREAD) {
 1829                         error = ugen_set_short_xfer(f_rx, addr);
 1830                 } else {
 1831                         error = EINVAL;
 1832                 }
 1833                 break;
 1834 
 1835         case USB_SET_TX_FORCE_SHORT:
 1836                 if (fflags & FWRITE) {
 1837                         error = ugen_set_short_xfer(f_tx, addr);
 1838                 } else {
 1839                         error = EINVAL;
 1840                 }
 1841                 break;
 1842 
 1843         case USB_SET_RX_TIMEOUT:
 1844                 if (fflags & FREAD) {
 1845                         error = ugen_set_timeout(f_rx, addr);
 1846                 } else {
 1847                         error = EINVAL;
 1848                 }
 1849                 break;
 1850 
 1851         case USB_SET_TX_TIMEOUT:
 1852                 if (fflags & FWRITE) {
 1853                         error = ugen_set_timeout(f_tx, addr);
 1854                 } else {
 1855                         error = EINVAL;
 1856                 }
 1857                 break;
 1858 
 1859         case USB_GET_RX_FRAME_SIZE:
 1860                 if (fflags & FREAD) {
 1861                         error = ugen_get_frame_size(f_rx, addr);
 1862                 } else {
 1863                         error = EINVAL;
 1864                 }
 1865                 break;
 1866 
 1867         case USB_GET_TX_FRAME_SIZE:
 1868                 if (fflags & FWRITE) {
 1869                         error = ugen_get_frame_size(f_tx, addr);
 1870                 } else {
 1871                         error = EINVAL;
 1872                 }
 1873                 break;
 1874 
 1875         case USB_SET_RX_BUFFER_SIZE:
 1876                 if (fflags & FREAD) {
 1877                         error = ugen_set_buffer_size(f_rx, addr);
 1878                 } else {
 1879                         error = EINVAL;
 1880                 }
 1881                 break;
 1882 
 1883         case USB_SET_TX_BUFFER_SIZE:
 1884                 if (fflags & FWRITE) {
 1885                         error = ugen_set_buffer_size(f_tx, addr);
 1886                 } else {
 1887                         error = EINVAL;
 1888                 }
 1889                 break;
 1890 
 1891         case USB_GET_RX_BUFFER_SIZE:
 1892                 if (fflags & FREAD) {
 1893                         error = ugen_get_buffer_size(f_rx, addr);
 1894                 } else {
 1895                         error = EINVAL;
 1896                 }
 1897                 break;
 1898 
 1899         case USB_GET_TX_BUFFER_SIZE:
 1900                 if (fflags & FWRITE) {
 1901                         error = ugen_get_buffer_size(f_tx, addr);
 1902                 } else {
 1903                         error = EINVAL;
 1904                 }
 1905                 break;
 1906 
 1907         case USB_GET_RX_INTERFACE_DESC:
 1908                 if (fflags & FREAD) {
 1909                         error = ugen_get_iface_desc(f_rx, addr);
 1910                 } else {
 1911                         error = EINVAL;
 1912                 }
 1913                 break;
 1914 
 1915         case USB_GET_TX_INTERFACE_DESC:
 1916                 if (fflags & FWRITE) {
 1917                         error = ugen_get_iface_desc(f_tx, addr);
 1918                 } else {
 1919                         error = EINVAL;
 1920                 }
 1921                 break;
 1922 
 1923         case USB_GET_RX_ENDPOINT_DESC:
 1924                 if (fflags & FREAD) {
 1925                         error = ugen_get_endpoint_desc(f_rx, addr);
 1926                 } else {
 1927                         error = EINVAL;
 1928                 }
 1929                 break;
 1930 
 1931         case USB_GET_TX_ENDPOINT_DESC:
 1932                 if (fflags & FWRITE) {
 1933                         error = ugen_get_endpoint_desc(f_tx, addr);
 1934                 } else {
 1935                         error = EINVAL;
 1936                 }
 1937                 break;
 1938 
 1939         case USB_SET_RX_STALL_FLAG:
 1940                 if ((fflags & FREAD) && (*(int *)addr)) {
 1941                         f_rx->flag_stall = 1;
 1942                 }
 1943                 break;
 1944 
 1945         case USB_SET_TX_STALL_FLAG:
 1946                 if ((fflags & FWRITE) && (*(int *)addr)) {
 1947                         f_tx->flag_stall = 1;
 1948                 }
 1949                 break;
 1950 
 1951         default:
 1952                 error = ENOIOCTL;
 1953                 break;
 1954         }
 1955         return (error);
 1956 }
 1957 
 1958 static int
 1959 ugen_ioctl_post(struct usb_fifo *f, u_long cmd, void *addr, int fflags)
 1960 {
 1961         union {
 1962                 struct usb_interface_descriptor *idesc;
 1963                 struct usb_alt_interface *ai;
 1964                 struct usb_device_descriptor *ddesc;
 1965                 struct usb_config_descriptor *cdesc;
 1966                 struct usb_device_stats *stat;
 1967                 struct usb_fs_init *pinit;
 1968                 struct usb_fs_uninit *puninit;
 1969                 uint32_t *ptime;
 1970                 void   *addr;
 1971                 int    *pint;
 1972         }     u;
 1973         struct usb_device_descriptor *dtemp;
 1974         struct usb_config_descriptor *ctemp;
 1975         struct usb_interface *iface;
 1976         int error = 0;
 1977         uint8_t n;
 1978 
 1979         u.addr = addr;
 1980 
 1981         DPRINTFN(6, "cmd=0x%08lx\n", cmd);
 1982 
 1983         switch (cmd) {
 1984         case USB_DISCOVER:
 1985                 usb_needs_explore_all();
 1986                 break;
 1987 
 1988         case USB_SETDEBUG:
 1989                 if (!(fflags & FWRITE)) {
 1990                         error = EPERM;
 1991                         break;
 1992                 }
 1993                 usb_debug = *(int *)addr;
 1994                 break;
 1995 
 1996         case USB_GET_CONFIG:
 1997                 *(int *)addr = f->udev->curr_config_index;
 1998                 break;
 1999 
 2000         case USB_SET_CONFIG:
 2001                 if (!(fflags & FWRITE)) {
 2002                         error = EPERM;
 2003                         break;
 2004                 }
 2005                 error = ugen_set_config(f, *(int *)addr);
 2006                 break;
 2007 
 2008         case USB_GET_ALTINTERFACE:
 2009                 iface = usbd_get_iface(f->udev,
 2010                     u.ai->uai_interface_index);
 2011                 if (iface && iface->idesc) {
 2012                         u.ai->uai_alt_index = iface->alt_index;
 2013                 } else {
 2014                         error = EINVAL;
 2015                 }
 2016                 break;
 2017 
 2018         case USB_SET_ALTINTERFACE:
 2019                 if (!(fflags & FWRITE)) {
 2020                         error = EPERM;
 2021                         break;
 2022                 }
 2023                 error = ugen_set_interface(f,
 2024                     u.ai->uai_interface_index, u.ai->uai_alt_index);
 2025                 break;
 2026 
 2027         case USB_GET_DEVICE_DESC:
 2028                 dtemp = usbd_get_device_descriptor(f->udev);
 2029                 if (!dtemp) {
 2030                         error = EIO;
 2031                         break;
 2032                 }
 2033                 *u.ddesc = *dtemp;
 2034                 break;
 2035 
 2036         case USB_GET_CONFIG_DESC:
 2037                 ctemp = usbd_get_config_descriptor(f->udev);
 2038                 if (!ctemp) {
 2039                         error = EIO;
 2040                         break;
 2041                 }
 2042                 *u.cdesc = *ctemp;
 2043                 break;
 2044 
 2045         case USB_GET_FULL_DESC:
 2046                 error = ugen_get_cdesc(f, addr);
 2047                 break;
 2048 
 2049         case USB_GET_STRING_DESC:
 2050                 error = ugen_get_sdesc(f, addr);
 2051                 break;
 2052 
 2053         case USB_GET_IFACE_DRIVER:
 2054                 error = ugen_get_iface_driver(f, addr);
 2055                 break;
 2056 
 2057         case USB_REQUEST:
 2058         case USB_DO_REQUEST:
 2059                 if (!(fflags & FWRITE)) {
 2060                         error = EPERM;
 2061                         break;
 2062                 }
 2063                 error = ugen_do_request(f, addr);
 2064                 break;
 2065 
 2066         case USB_DEVICEINFO:
 2067         case USB_GET_DEVICEINFO:
 2068                 error = usb_gen_fill_deviceinfo(f, addr);
 2069                 break;
 2070 
 2071         case USB_DEVICESTATS:
 2072                 for (n = 0; n != 4; n++) {
 2073 
 2074                         u.stat->uds_requests_fail[n] =
 2075                             f->udev->bus->stats_err.uds_requests[n];
 2076 
 2077                         u.stat->uds_requests_ok[n] =
 2078                             f->udev->bus->stats_ok.uds_requests[n];
 2079                 }
 2080                 break;
 2081 
 2082         case USB_DEVICEENUMERATE:
 2083                 error = ugen_re_enumerate(f);
 2084                 break;
 2085 
 2086         case USB_GET_PLUGTIME:
 2087                 *u.ptime = f->udev->plugtime;
 2088                 break;
 2089 
 2090         case USB_CLAIM_INTERFACE:
 2091         case USB_RELEASE_INTERFACE:
 2092                 /* TODO */
 2093                 break;
 2094 
 2095         case USB_IFACE_DRIVER_ACTIVE:
 2096                 /* TODO */
 2097                 *u.pint = 0;
 2098                 break;
 2099 
 2100         case USB_IFACE_DRIVER_DETACH:
 2101                 /* TODO */
 2102                 error = priv_check(curthread, PRIV_DRIVER);
 2103                 if (error) {
 2104                         break;
 2105                 }
 2106                 error = EINVAL;
 2107                 break;
 2108 
 2109         case USB_SET_POWER_MODE:
 2110                 error = ugen_set_power_mode(f, *u.pint);
 2111                 break;
 2112 
 2113         case USB_GET_POWER_MODE:
 2114                 *u.pint = ugen_get_power_mode(f);
 2115                 break;
 2116 
 2117         case USB_SET_PORT_ENABLE:
 2118                 error = ugen_do_port_feature(f,
 2119                     *u.pint, 1, UHF_PORT_ENABLE);
 2120                 break;
 2121 
 2122         case USB_SET_PORT_DISABLE:
 2123                 error = ugen_do_port_feature(f,
 2124                     *u.pint, 0, UHF_PORT_ENABLE);
 2125                 break;
 2126 
 2127         case USB_FS_INIT:
 2128                 /* verify input parameters */
 2129                 if (u.pinit->pEndpoints == NULL) {
 2130                         error = EINVAL;
 2131                         break;
 2132                 }
 2133                 if (u.pinit->ep_index_max > 127) {
 2134                         error = EINVAL;
 2135                         break;
 2136                 }
 2137                 if (u.pinit->ep_index_max == 0) {
 2138                         error = EINVAL;
 2139                         break;
 2140                 }
 2141                 if (f->fs_xfer != NULL) {
 2142                         error = EBUSY;
 2143                         break;
 2144                 }
 2145                 if (f->dev_ep_index != 0) {
 2146                         error = EINVAL;
 2147                         break;
 2148                 }
 2149                 if (ugen_fifo_in_use(f, fflags)) {
 2150                         error = EBUSY;
 2151                         break;
 2152                 }
 2153                 error = usb_fifo_alloc_buffer(f, 1, u.pinit->ep_index_max);
 2154                 if (error) {
 2155                         break;
 2156                 }
 2157                 f->fs_xfer = malloc(sizeof(f->fs_xfer[0]) *
 2158                     u.pinit->ep_index_max, M_USB, M_WAITOK | M_ZERO);
 2159                 if (f->fs_xfer == NULL) {
 2160                         usb_fifo_free_buffer(f);
 2161                         error = ENOMEM;
 2162                         break;
 2163                 }
 2164                 f->fs_ep_max = u.pinit->ep_index_max;
 2165                 f->fs_ep_ptr = u.pinit->pEndpoints;
 2166                 break;
 2167 
 2168         case USB_FS_UNINIT:
 2169                 if (u.puninit->dummy != 0) {
 2170                         error = EINVAL;
 2171                         break;
 2172                 }
 2173                 error = ugen_fs_uninit(f);
 2174                 break;
 2175 
 2176         default:
 2177                 mtx_lock(f->priv_mtx);
 2178                 error = ugen_iface_ioctl(f, cmd, addr, fflags);
 2179                 mtx_unlock(f->priv_mtx);
 2180                 break;
 2181         }
 2182         DPRINTFN(6, "error=%d\n", error);
 2183         return (error);
 2184 }
 2185 
 2186 static void
 2187 ugen_default_fs_callback(struct usb_xfer *xfer, usb_error_t error)
 2188 {
 2189         ;                               /* workaround for a bug in "indent" */
 2190 
 2191         DPRINTF("st=%u alen=%u aframes=%u\n",
 2192             USB_GET_STATE(xfer), xfer->actlen, xfer->aframes);
 2193 
 2194         switch (USB_GET_STATE(xfer)) {
 2195         case USB_ST_SETUP:
 2196                 usbd_transfer_submit(xfer);
 2197                 break;
 2198         default:
 2199                 ugen_fs_set_complete(xfer->priv_sc, USB_P2U(xfer->priv_fifo));
 2200                 break;
 2201         }
 2202 }
 2203 #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
