sys/dev/usb/serial/uvisor.c

   1 /*      $NetBSD: uvisor.c,v 1.9 2001/01/23 14:04:14 augustss Exp $      */
   2 /*      $FreeBSD$ */
   3
   4 /* Also already merged from NetBSD:
   5  *      $NetBSD: uvisor.c,v 1.12 2001/11/13 06:24:57 lukem Exp $
   6  *      $NetBSD: uvisor.c,v 1.13 2002/02/11 15:11:49 augustss Exp $
   7  *      $NetBSD: uvisor.c,v 1.14 2002/02/27 23:00:03 augustss Exp $
   8  *      $NetBSD: uvisor.c,v 1.15 2002/06/16 15:01:31 augustss Exp $
   9  *      $NetBSD: uvisor.c,v 1.16 2002/07/11 21:14:36 augustss Exp $
  10  *      $NetBSD: uvisor.c,v 1.17 2002/08/13 11:38:15 augustss Exp $
  11  *      $NetBSD: uvisor.c,v 1.18 2003/02/05 00:50:14 augustss Exp $
  12  *      $NetBSD: uvisor.c,v 1.19 2003/02/07 18:12:37 augustss Exp $
  13  *      $NetBSD: uvisor.c,v 1.20 2003/04/11 01:30:10 simonb Exp $
  14  */
  15
  16 /*-
  17  * Copyright (c) 2000 The NetBSD Foundation, Inc.
  18  * All rights reserved.
  19  *
  20  * This code is derived from software contributed to The NetBSD Foundation
  21  * by Lennart Augustsson (lennart@augustsson.net) at
  22  * Carlstedt Research & Technology.
  23  *
  24  * Redistribution and use in source and binary forms, with or without
  25  * modification, are permitted provided that the following conditions
  26  * are met:
  27  * 1. Redistributions of source code must retain the above copyright
  28  *    notice, this list of conditions and the following disclaimer.
  29  * 2. Redistributions in binary form must reproduce the above copyright
  30  *    notice, this list of conditions and the following disclaimer in the
  31  *    documentation and/or other materials provided with the distribution.
  32  * 3. All advertising materials mentioning features or use of this software
  33  *    must display the following acknowledgement:
  34  *        This product includes software developed by the NetBSD
  35  *        Foundation, Inc. and its contributors.
  36  * 4. Neither the name of The NetBSD Foundation nor the names of its
  37  *    contributors may be used to endorse or promote products derived
  38  *    from this software without specific prior written permission.
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  41  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  42  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  44  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  45  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  46  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  47  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  48  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  50  * POSSIBILITY OF SUCH DAMAGE.
  51  */
  52
  53 /*
  54  * Handspring Visor (Palmpilot compatible PDA) driver
  55  */
  56
  57 #include <sys/stdint.h>
  58 #include <sys/stddef.h>
  59 #include <sys/param.h>
  60 #include <sys/queue.h>
  61 #include <sys/types.h>
  62 #include <sys/systm.h>
  63 #include <sys/kernel.h>
  64 #include <sys/bus.h>
  65 #include <sys/linker_set.h>
  66 #include <sys/module.h>
  67 #include <sys/lock.h>
  68 #include <sys/mutex.h>
  69 #include <sys/condvar.h>
  70 #include <sys/sysctl.h>
  71 #include <sys/sx.h>
  72 #include <sys/unistd.h>
  73 #include <sys/callout.h>
  74 #include <sys/malloc.h>
  75 #include <sys/priv.h>
  76
  77 #include <dev/usb/usb.h>
  78 #include <dev/usb/usbdi.h>
  79 #include <dev/usb/usbdi_util.h>
  80 #include "usbdevs.h"
  81
  82 #define USB_DEBUG_VAR uvisor_debug
  83 #include <dev/usb/usb_debug.h>
  84 #include <dev/usb/usb_process.h>
  85
  86 #include <dev/usb/serial/usb_serial.h>
  87
  88 #if USB_DEBUG
  89 static int uvisor_debug = 0;
  90
  91 SYSCTL_NODE(_hw_usb, OID_AUTO, uvisor, CTLFLAG_RW, 0, "USB uvisor");
  92 SYSCTL_INT(_hw_usb_uvisor, OID_AUTO, debug, CTLFLAG_RW,
  93     &uvisor_debug, 0, "Debug level");
  94 #endif
  95
  96 #define UVISOR_CONFIG_INDEX     0
  97 #define UVISOR_IFACE_INDEX      0
  98
  99 /*
 100  * The following buffer sizes are hardcoded due to the way the Palm
 101  * firmware works. It looks like the device is not short terminating
 102  * the data transferred.
 103  */
 104 #define UVISORIBUFSIZE         0        /* Use wMaxPacketSize */
 105 #define UVISOROBUFSIZE         32       /* bytes */
 106 #define UVISOROFRAMES          32       /* units */
 107
 108 /* From the Linux driver */
 109 /*
 110  * UVISOR_REQUEST_BYTES_AVAILABLE asks the visor for the number of bytes that
 111  * are available to be transfered to the host for the specified endpoint.
 112  * Currently this is not used, and always returns 0x0001
 113  */
 114 #define UVISOR_REQUEST_BYTES_AVAILABLE          0x01
 115
 116 /*
 117  * UVISOR_CLOSE_NOTIFICATION is set to the device to notify it that the host
 118  * is now closing the pipe. An empty packet is sent in response.
 119  */
 120 #define UVISOR_CLOSE_NOTIFICATION               0x02
 121
 122 /*
 123  * UVISOR_GET_CONNECTION_INFORMATION is sent by the host during enumeration to
 124  * get the endpoints used by the connection.
 125  */
 126 #define UVISOR_GET_CONNECTION_INFORMATION       0x03
 127
 128 /*
 129  * UVISOR_GET_CONNECTION_INFORMATION returns data in the following format
 130  */
 131 #define UVISOR_MAX_CONN 8
 132 struct uvisor_connection_info {
 133         uWord   num_ports;
 134         struct {
 135                 uByte   port_function_id;
 136                 uByte   port;
 137         } __packed connections[UVISOR_MAX_CONN];
 138 } __packed;
 139
 140 #define UVISOR_CONNECTION_INFO_SIZE 18
 141
 142 /* struct uvisor_connection_info.connection[x].port defines: */
 143 #define UVISOR_ENDPOINT_1               0x01
 144 #define UVISOR_ENDPOINT_2               0x02
 145
 146 /* struct uvisor_connection_info.connection[x].port_function_id defines: */
 147 #define UVISOR_FUNCTION_GENERIC         0x00
 148 #define UVISOR_FUNCTION_DEBUGGER        0x01
 149 #define UVISOR_FUNCTION_HOTSYNC         0x02
 150 #define UVISOR_FUNCTION_CONSOLE         0x03
 151 #define UVISOR_FUNCTION_REMOTE_FILE_SYS 0x04
 152
 153 /*
 154  * Unknown PalmOS stuff.
 155  */
 156 #define UVISOR_GET_PALM_INFORMATION             0x04
 157 #define UVISOR_GET_PALM_INFORMATION_LEN         0x44
 158
 159 struct uvisor_palm_connection_info {
 160         uByte   num_ports;
 161         uByte   endpoint_numbers_different;
 162         uWord   reserved1;
 163         struct {
 164                 uDWord  port_function_id;
 165                 uByte   port;
 166                 uByte   end_point_info;
 167                 uWord   reserved;
 168         } __packed connections[UVISOR_MAX_CONN];
 169 } __packed;
 170
 171 enum {
 172         UVISOR_BULK_DT_WR,
 173         UVISOR_BULK_DT_RD,
 174         UVISOR_N_TRANSFER,
 175 };
 176
 177 struct uvisor_softc {
 178         struct ucom_super_softc sc_super_ucom;
 179         struct ucom_softc sc_ucom;
 180
 181         struct usb_xfer *sc_xfer[UVISOR_N_TRANSFER];
 182         struct usb_device *sc_udev;
 183         struct mtx sc_mtx;
 184
 185         uint16_t sc_flag;
 186 #define UVISOR_FLAG_PALM4       0x0001
 187 #define UVISOR_FLAG_VISOR       0x0002
 188 #define UVISOR_FLAG_PALM35      0x0004
 189 #define UVISOR_FLAG_SEND_NOTIFY 0x0008
 190
 191         uint8_t sc_iface_no;
 192         uint8_t sc_iface_index;
 193 };
 194
 195 /* prototypes */
 196
 197 static device_probe_t uvisor_probe;
 198 static device_attach_t uvisor_attach;
 199 static device_detach_t uvisor_detach;
 200
 201 static usb_callback_t uvisor_write_callback;
 202 static usb_callback_t uvisor_read_callback;
 203
 204 static usb_error_t uvisor_init(struct uvisor_softc *, struct usb_device *,
 205                     struct usb_config *);
 206 static void     uvisor_cfg_open(struct ucom_softc *);
 207 static void     uvisor_cfg_close(struct ucom_softc *);
 208 static void     uvisor_start_read(struct ucom_softc *);
 209 static void     uvisor_stop_read(struct ucom_softc *);
 210 static void     uvisor_start_write(struct ucom_softc *);
 211 static void     uvisor_stop_write(struct ucom_softc *);
 212
 213 static const struct usb_config uvisor_config[UVISOR_N_TRANSFER] = {
 214
 215         [UVISOR_BULK_DT_WR] = {
 216                 .type = UE_BULK,
 217                 .endpoint = UE_ADDR_ANY,
 218                 .direction = UE_DIR_OUT,
 219                 .bufsize = UVISOROBUFSIZE * UVISOROFRAMES,
 220                 .frames = UVISOROFRAMES,
 221                 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
 222                 .callback = &uvisor_write_callback,
 223         },
 224
 225         [UVISOR_BULK_DT_RD] = {
 226                 .type = UE_BULK,
 227                 .endpoint = UE_ADDR_ANY,
 228                 .direction = UE_DIR_IN,
 229                 .bufsize = UVISORIBUFSIZE,
 230                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
 231                 .callback = &uvisor_read_callback,
 232         },
 233 };
 234
 235 static const struct ucom_callback uvisor_callback = {
 236         .ucom_cfg_open = &uvisor_cfg_open,
 237         .ucom_cfg_close = &uvisor_cfg_close,
 238         .ucom_start_read = &uvisor_start_read,
 239         .ucom_stop_read = &uvisor_stop_read,
 240         .ucom_start_write = &uvisor_start_write,
 241         .ucom_stop_write = &uvisor_stop_write,
 242 };
 243
 244 static device_method_t uvisor_methods[] = {
 245         DEVMETHOD(device_probe, uvisor_probe),
 246         DEVMETHOD(device_attach, uvisor_attach),
 247         DEVMETHOD(device_detach, uvisor_detach),
 248         {0, 0}
 249 };
 250
 251 static devclass_t uvisor_devclass;
 252
 253 static driver_t uvisor_driver = {
 254         .name = "uvisor",
 255         .methods = uvisor_methods,
 256         .size = sizeof(struct uvisor_softc),
 257 };
 258
 259 DRIVER_MODULE(uvisor, uhub, uvisor_driver, uvisor_devclass, NULL, 0);
 260 MODULE_DEPEND(uvisor, ucom, 1, 1, 1);
 261 MODULE_DEPEND(uvisor, usb, 1, 1, 1);
 262
 263 static const struct usb_device_id uvisor_devs[] = {
 264 #define UVISOR_DEV(v,p,i) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i) }
 265         UVISOR_DEV(ACEECA, MEZ1000, UVISOR_FLAG_PALM4),
 266         UVISOR_DEV(GARMIN, IQUE_3600, UVISOR_FLAG_PALM4),
 267         UVISOR_DEV(FOSSIL, WRISTPDA, UVISOR_FLAG_PALM4),
 268         UVISOR_DEV(HANDSPRING, VISOR, UVISOR_FLAG_VISOR),
 269         UVISOR_DEV(HANDSPRING, TREO, UVISOR_FLAG_PALM4),
 270         UVISOR_DEV(HANDSPRING, TREO600, UVISOR_FLAG_PALM4),
 271         UVISOR_DEV(PALM, M500, UVISOR_FLAG_PALM4),
 272         UVISOR_DEV(PALM, M505, UVISOR_FLAG_PALM4),
 273         UVISOR_DEV(PALM, M515, UVISOR_FLAG_PALM4),
 274         UVISOR_DEV(PALM, I705, UVISOR_FLAG_PALM4),
 275         UVISOR_DEV(PALM, M125, UVISOR_FLAG_PALM4),
 276         UVISOR_DEV(PALM, M130, UVISOR_FLAG_PALM4),
 277         UVISOR_DEV(PALM, TUNGSTEN_Z, UVISOR_FLAG_PALM4),
 278         UVISOR_DEV(PALM, TUNGSTEN_T, UVISOR_FLAG_PALM4),
 279         UVISOR_DEV(PALM, ZIRE, UVISOR_FLAG_PALM4),
 280         UVISOR_DEV(PALM, ZIRE31, UVISOR_FLAG_PALM4),
 281         UVISOR_DEV(SAMSUNG, I500, UVISOR_FLAG_PALM4),
 282         UVISOR_DEV(SONY, CLIE_40, 0),
 283         UVISOR_DEV(SONY, CLIE_41, 0),
 284         UVISOR_DEV(SONY, CLIE_S360, UVISOR_FLAG_PALM4),
 285         UVISOR_DEV(SONY, CLIE_NX60, UVISOR_FLAG_PALM4),
 286         UVISOR_DEV(SONY, CLIE_35, UVISOR_FLAG_PALM35),
 287 /*  UVISOR_DEV(SONY, CLIE_25, UVISOR_FLAG_PALM4 ), */
 288         UVISOR_DEV(SONY, CLIE_TJ37, UVISOR_FLAG_PALM4),
 289 /*  UVISOR_DEV(SONY, CLIE_TH55, UVISOR_FLAG_PALM4 ), See PR 80935 */
 290         UVISOR_DEV(TAPWAVE, ZODIAC, UVISOR_FLAG_PALM4),
 291 #undef UVISOR_DEV
 292 };
 293
 294 static int
 295 uvisor_probe(device_t dev)
 296 {
 297         struct usb_attach_arg *uaa = device_get_ivars(dev);
 298
 299         if (uaa->usb_mode != USB_MODE_HOST) {
 300                 return (ENXIO);
 301         }
 302         if (uaa->info.bConfigIndex != UVISOR_CONFIG_INDEX) {
 303                 return (ENXIO);
 304         }
 305         if (uaa->info.bIfaceIndex != UVISOR_IFACE_INDEX) {
 306                 return (ENXIO);
 307         }
 308         return (usbd_lookup_id_by_uaa(uvisor_devs, sizeof(uvisor_devs), uaa));
 309 }
 310
 311 static int
 312 uvisor_attach(device_t dev)
 313 {
 314         struct usb_attach_arg *uaa = device_get_ivars(dev);
 315         struct uvisor_softc *sc = device_get_softc(dev);
 316         struct usb_config uvisor_config_copy[UVISOR_N_TRANSFER];
 317         int error;
 318
 319         DPRINTF("sc=%p\n", sc);
 320         bcopy(uvisor_config, uvisor_config_copy,
 321             sizeof(uvisor_config_copy));
 322         device_set_usb_desc(dev);
 323
 324         mtx_init(&sc->sc_mtx, "uvisor", NULL, MTX_DEF);
 325
 326         sc->sc_udev = uaa->device;
 327
 328         /* configure the device */
 329
 330         sc->sc_flag = USB_GET_DRIVER_INFO(uaa);
 331         sc->sc_iface_no = uaa->info.bIfaceNum;
 332         sc->sc_iface_index = UVISOR_IFACE_INDEX;
 333
 334         error = uvisor_init(sc, uaa->device, uvisor_config_copy);
 335
 336         if (error) {
 337                 DPRINTF("init failed, error=%s\n",
 338                     usbd_errstr(error));
 339                 goto detach;
 340         }
 341         error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index,
 342             sc->sc_xfer, uvisor_config_copy, UVISOR_N_TRANSFER,
 343             sc, &sc->sc_mtx);
 344         if (error) {
 345                 DPRINTF("could not allocate all pipes\n");
 346                 goto detach;
 347         }
 348
 349         error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
 350             &uvisor_callback, &sc->sc_mtx);
 351         if (error) {
 352                 DPRINTF("ucom_attach failed\n");
 353                 goto detach;
 354         }
 355         return (0);
 356
 357 detach:
 358         uvisor_detach(dev);
 359         return (ENXIO);
 360 }
 361
 362 static int
 363 uvisor_detach(device_t dev)
 364 {
 365         struct uvisor_softc *sc = device_get_softc(dev);
 366
 367         DPRINTF("sc=%p\n", sc);
 368
 369         ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1);
 370         usbd_transfer_unsetup(sc->sc_xfer, UVISOR_N_TRANSFER);
 371         mtx_destroy(&sc->sc_mtx);
 372
 373         return (0);
 374 }
 375
 376 static usb_error_t
 377 uvisor_init(struct uvisor_softc *sc, struct usb_device *udev, struct usb_config *config)
 378 {
 379         usb_error_t err = 0;
 380         struct usb_device_request req;
 381         struct uvisor_connection_info coninfo;
 382         struct uvisor_palm_connection_info pconinfo;
 383         uint16_t actlen;
 384         uint8_t buffer[256];
 385
 386         if (sc->sc_flag & UVISOR_FLAG_VISOR) {
 387                 DPRINTF("getting connection info\n");
 388                 req.bmRequestType = UT_READ_VENDOR_ENDPOINT;
 389                 req.bRequest = UVISOR_GET_CONNECTION_INFORMATION;
 390                 USETW(req.wValue, 0);
 391                 USETW(req.wIndex, 0);
 392                 USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE);
 393                 err = usbd_do_request_flags(udev, NULL,
 394                     &req, &coninfo, USB_SHORT_XFER_OK,
 395                     &actlen, USB_DEFAULT_TIMEOUT);
 396
 397                 if (err) {
 398                         goto done;
 399                 }
 400         }
 401 #if USB_DEBUG
 402         if (sc->sc_flag & UVISOR_FLAG_VISOR) {
 403                 uint16_t i, np;
 404                 const char *desc;
 405
 406                 np = UGETW(coninfo.num_ports);
 407                 if (np > UVISOR_MAX_CONN) {
 408                         np = UVISOR_MAX_CONN;
 409                 }
 410                 DPRINTF("Number of ports: %d\n", np);
 411
 412                 for (i = 0; i < np; ++i) {
 413                         switch (coninfo.connections[i].port_function_id) {
 414                         case UVISOR_FUNCTION_GENERIC:
 415                                 desc = "Generic";
 416                                 break;
 417                         case UVISOR_FUNCTION_DEBUGGER:
 418                                 desc = "Debugger";
 419                                 break;
 420                         case UVISOR_FUNCTION_HOTSYNC:
 421                                 desc = "HotSync";
 422                                 break;
 423                         case UVISOR_FUNCTION_REMOTE_FILE_SYS:
 424                                 desc = "Remote File System";
 425                                 break;
 426                         default:
 427                                 desc = "unknown";
 428                                 break;
 429                         }
 430                         DPRINTF("Port %d is for %s\n",
 431                             coninfo.connections[i].port, desc);
 432                 }
 433         }
 434 #endif
 435
 436         if (sc->sc_flag & UVISOR_FLAG_PALM4) {
 437                 uint8_t port;
 438
 439                 /* Palm OS 4.0 Hack */
 440                 req.bmRequestType = UT_READ_VENDOR_ENDPOINT;
 441                 req.bRequest = UVISOR_GET_PALM_INFORMATION;
 442                 USETW(req.wValue, 0);
 443                 USETW(req.wIndex, 0);
 444                 USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN);
 445
 446                 err = usbd_do_request_flags
 447                     (udev, NULL, &req, &pconinfo, USB_SHORT_XFER_OK,
 448                     &actlen, USB_DEFAULT_TIMEOUT);
 449
 450                 if (err) {
 451                         goto done;
 452                 }
 453                 if (actlen < 12) {
 454                         DPRINTF("too little data\n");
 455                         err = USB_ERR_INVAL;
 456                         goto done;
 457                 }
 458                 if (pconinfo.endpoint_numbers_different) {
 459                         port = pconinfo.connections[0].end_point_info;
 460                         config[0].endpoint = (port & 0xF);      /* output */
 461                         config[1].endpoint = (port >> 4);       /* input */
 462                 } else {
 463                         port = pconinfo.connections[0].port;
 464                         config[0].endpoint = (port & 0xF);      /* output */
 465                         config[1].endpoint = (port & 0xF);      /* input */
 466                 }
 467 #if 0
 468                 req.bmRequestType = UT_READ_VENDOR_ENDPOINT;
 469                 req.bRequest = UVISOR_GET_PALM_INFORMATION;
 470                 USETW(req.wValue, 0);
 471                 USETW(req.wIndex, 0);
 472                 USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN);
 473                 err = usbd_do_request(udev, &req, buffer);
 474                 if (err) {
 475                         goto done;
 476                 }
 477 #endif
 478         }
 479         if (sc->sc_flag & UVISOR_FLAG_PALM35) {
 480                 /* get the config number */
 481                 DPRINTF("getting config info\n");
 482                 req.bmRequestType = UT_READ;
 483                 req.bRequest = UR_GET_CONFIG;
 484                 USETW(req.wValue, 0);
 485                 USETW(req.wIndex, 0);
 486                 USETW(req.wLength, 1);
 487
 488                 err = usbd_do_request(udev, NULL, &req, buffer);
 489                 if (err) {
 490                         goto done;
 491                 }
 492                 /* get the interface number */
 493                 DPRINTF("get the interface number\n");
 494                 req.bmRequestType = UT_READ_DEVICE;
 495                 req.bRequest = UR_GET_INTERFACE;
 496                 USETW(req.wValue, 0);
 497                 USETW(req.wIndex, 0);
 498                 USETW(req.wLength, 1);
 499                 err = usbd_do_request(udev, NULL, &req, buffer);
 500                 if (err) {
 501                         goto done;
 502                 }
 503         }
 504 #if 0
 505         uWord wAvail;
 506
 507         DPRINTF("getting available bytes\n");
 508         req.bmRequestType = UT_READ_VENDOR_ENDPOINT;
 509         req.bRequest = UVISOR_REQUEST_BYTES_AVAILABLE;
 510         USETW(req.wValue, 0);
 511         USETW(req.wIndex, 5);
 512         USETW(req.wLength, sizeof(wAvail));
 513         err = usbd_do_request(udev, NULL, &req, &wAvail);
 514         if (err) {
 515                 goto done;
 516         }
 517         DPRINTF("avail=%d\n", UGETW(wAvail));
 518 #endif
 519
 520         DPRINTF("done\n");
 521 done:
 522         return (err);
 523 }
 524
 525 static void
 526 uvisor_cfg_open(struct ucom_softc *ucom)
 527 {
 528         return;
 529 }
 530
 531 static void
 532 uvisor_cfg_close(struct ucom_softc *ucom)
 533 {
 534         struct uvisor_softc *sc = ucom->sc_parent;
 535         uint8_t buffer[UVISOR_CONNECTION_INFO_SIZE];
 536         struct usb_device_request req;
 537         usb_error_t err;
 538
 539         req.bmRequestType = UT_READ_VENDOR_ENDPOINT;    /* XXX read? */
 540         req.bRequest = UVISOR_CLOSE_NOTIFICATION;
 541         USETW(req.wValue, 0);
 542         USETW(req.wIndex, 0);
 543         USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE);
 544
 545         err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 546             &req, buffer, 0, 1000);
 547         if (err) {
 548                 DPRINTFN(0, "close notification failed, error=%s\n",
 549                     usbd_errstr(err));
 550         }
 551 }
 552
 553 static void
 554 uvisor_start_read(struct ucom_softc *ucom)
 555 {
 556         struct uvisor_softc *sc = ucom->sc_parent;
 557
 558         usbd_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_RD]);
 559 }
 560
 561 static void
 562 uvisor_stop_read(struct ucom_softc *ucom)
 563 {
 564         struct uvisor_softc *sc = ucom->sc_parent;
 565
 566         usbd_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_RD]);
 567 }
 568
 569 static void
 570 uvisor_start_write(struct ucom_softc *ucom)
 571 {
 572         struct uvisor_softc *sc = ucom->sc_parent;
 573
 574         usbd_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_WR]);
 575 }
 576
 577 static void
 578 uvisor_stop_write(struct ucom_softc *ucom)
 579 {
 580         struct uvisor_softc *sc = ucom->sc_parent;
 581
 582         usbd_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_WR]);
 583 }
 584
 585 static void
 586 uvisor_write_callback(struct usb_xfer *xfer, usb_error_t error)
 587 {
 588         struct uvisor_softc *sc = usbd_xfer_softc(xfer);
 589         struct usb_page_cache *pc;
 590         uint32_t actlen;
 591         uint8_t x;
 592
 593         switch (USB_GET_STATE(xfer)) {
 594         case USB_ST_SETUP:
 595         case USB_ST_TRANSFERRED:
 596 tr_setup:
 597                 for (x = 0; x != UVISOROFRAMES; x++) {
 598
 599                         usbd_xfer_set_frame_offset(xfer,
 600                             x * UVISOROBUFSIZE, x);
 601
 602                         pc = usbd_xfer_get_frame(xfer, x);
 603                         if (ucom_get_data(&sc->sc_ucom, pc, 0,
 604                             UVISOROBUFSIZE, &actlen)) {
 605                                 usbd_xfer_set_frame_len(xfer, x, actlen);
 606                         } else {
 607                                 break;
 608                         }
 609                 }
 610                 /* check for data */
 611                 if (x != 0) {
 612                         usbd_xfer_set_frames(xfer, x);
 613                         usbd_transfer_submit(xfer);
 614                 }
 615                 break;
 616
 617         default:                        /* Error */
 618                 if (error != USB_ERR_CANCELLED) {
 619                         /* try to clear stall first */
 620                         usbd_xfer_set_stall(xfer);
 621                         goto tr_setup;
 622                 }
 623                 break;
 624         }
 625 }
 626
 627 static void
 628 uvisor_read_callback(struct usb_xfer *xfer, usb_error_t error)
 629 {
 630         struct uvisor_softc *sc = usbd_xfer_softc(xfer);
 631         struct usb_page_cache *pc;
 632         int actlen;
 633
 634         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
 635
 636         switch (USB_GET_STATE(xfer)) {
 637         case USB_ST_TRANSFERRED:
 638                 pc = usbd_xfer_get_frame(xfer, 0);
 639                 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
 640
 641         case USB_ST_SETUP:
 642 tr_setup:
 643                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
 644                 usbd_transfer_submit(xfer);
 645                 return;
 646
 647         default:                        /* Error */
 648                 if (error != USB_ERR_CANCELLED) {
 649                         /* try to clear stall first */
 650                         usbd_xfer_set_stall(xfer);
 651                         goto tr_setup;
 652                 }
 653                 return;
 654         }
 655 }