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  * SPDX-License-Identifier: BSD-2-Clause-NetBSD
  18  *
  19  * Copyright (c) 2000 The NetBSD Foundation, Inc.
  20  * All rights reserved.
  21  *
  22  * This code is derived from software contributed to The NetBSD Foundation
  23  * by Lennart Augustsson (lennart@augustsson.net) at
  24  * Carlstedt Research & Technology.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  *
  35  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  36  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  37  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  38  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  39  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  40  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  41  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  42  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  43  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  44  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  45  * POSSIBILITY OF SUCH DAMAGE.
  46  */
  47
  48 /*
  49  * Handspring Visor (Palmpilot compatible PDA) driver
  50  */
  51
  52 #include <sys/stdint.h>
  53 #include <sys/stddef.h>
  54 #include <sys/param.h>
  55 #include <sys/queue.h>
  56 #include <sys/types.h>
  57 #include <sys/systm.h>
  58 #include <sys/kernel.h>
  59 #include <sys/bus.h>
  60 #include <sys/module.h>
  61 #include <sys/lock.h>
  62 #include <sys/mutex.h>
  63 #include <sys/condvar.h>
  64 #include <sys/sysctl.h>
  65 #include <sys/sx.h>
  66 #include <sys/unistd.h>
  67 #include <sys/callout.h>
  68 #include <sys/malloc.h>
  69 #include <sys/priv.h>
  70
  71 #include <dev/usb/usb.h>
  72 #include <dev/usb/usbdi.h>
  73 #include <dev/usb/usbdi_util.h>
  74 #include "usbdevs.h"
  75
  76 #define USB_DEBUG_VAR uvisor_debug
  77 #include <dev/usb/usb_debug.h>
  78 #include <dev/usb/usb_process.h>
  79
  80 #include <dev/usb/serial/usb_serial.h>
  81
  82 #ifdef USB_DEBUG
  83 static int uvisor_debug = 0;
  84
  85 static SYSCTL_NODE(_hw_usb, OID_AUTO, uvisor, CTLFLAG_RW, 0, "USB uvisor");
  86 SYSCTL_INT(_hw_usb_uvisor, OID_AUTO, debug, CTLFLAG_RWTUN,
  87     &uvisor_debug, 0, "Debug level");
  88 #endif
  89
  90 #define UVISOR_CONFIG_INDEX     0
  91 #define UVISOR_IFACE_INDEX      0
  92
  93 /*
  94  * The following buffer sizes are hardcoded due to the way the Palm
  95  * firmware works. It looks like the device is not short terminating
  96  * the data transferred.
  97  */
  98 #define UVISORIBUFSIZE         0        /* Use wMaxPacketSize */
  99 #define UVISOROBUFSIZE         32       /* bytes */
 100 #define UVISOROFRAMES          32       /* units */
 101
 102 /* From the Linux driver */
 103 /*
 104  * UVISOR_REQUEST_BYTES_AVAILABLE asks the visor for the number of bytes that
 105  * are available to be transferred to the host for the specified endpoint.
 106  * Currently this is not used, and always returns 0x0001
 107  */
 108 #define UVISOR_REQUEST_BYTES_AVAILABLE          0x01
 109
 110 /*
 111  * UVISOR_CLOSE_NOTIFICATION is set to the device to notify it that the host
 112  * is now closing the pipe. An empty packet is sent in response.
 113  */
 114 #define UVISOR_CLOSE_NOTIFICATION               0x02
 115
 116 /*
 117  * UVISOR_GET_CONNECTION_INFORMATION is sent by the host during enumeration to
 118  * get the endpoints used by the connection.
 119  */
 120 #define UVISOR_GET_CONNECTION_INFORMATION       0x03
 121
 122 /*
 123  * UVISOR_GET_CONNECTION_INFORMATION returns data in the following format
 124  */
 125 #define UVISOR_MAX_CONN 8
 126 struct uvisor_connection_info {
 127         uWord   num_ports;
 128         struct {
 129                 uByte   port_function_id;
 130                 uByte   port;
 131         } __packed connections[UVISOR_MAX_CONN];
 132 } __packed;
 133
 134 #define UVISOR_CONNECTION_INFO_SIZE 18
 135
 136 /* struct uvisor_connection_info.connection[x].port defines: */
 137 #define UVISOR_ENDPOINT_1               0x01
 138 #define UVISOR_ENDPOINT_2               0x02
 139
 140 /* struct uvisor_connection_info.connection[x].port_function_id defines: */
 141 #define UVISOR_FUNCTION_GENERIC         0x00
 142 #define UVISOR_FUNCTION_DEBUGGER        0x01
 143 #define UVISOR_FUNCTION_HOTSYNC         0x02
 144 #define UVISOR_FUNCTION_CONSOLE         0x03
 145 #define UVISOR_FUNCTION_REMOTE_FILE_SYS 0x04
 146
 147 /*
 148  * Unknown PalmOS stuff.
 149  */
 150 #define UVISOR_GET_PALM_INFORMATION             0x04
 151 #define UVISOR_GET_PALM_INFORMATION_LEN         0x44
 152
 153 struct uvisor_palm_connection_info {
 154         uByte   num_ports;
 155         uByte   endpoint_numbers_different;
 156         uWord   reserved1;
 157         struct {
 158                 uDWord  port_function_id;
 159                 uByte   port;
 160                 uByte   end_point_info;
 161                 uWord   reserved;
 162         } __packed connections[UVISOR_MAX_CONN];
 163 } __packed;
 164
 165 enum {
 166         UVISOR_BULK_DT_WR,
 167         UVISOR_BULK_DT_RD,
 168         UVISOR_N_TRANSFER,
 169 };
 170
 171 struct uvisor_softc {
 172         struct ucom_super_softc sc_super_ucom;
 173         struct ucom_softc sc_ucom;
 174
 175         struct usb_xfer *sc_xfer[UVISOR_N_TRANSFER];
 176         struct usb_device *sc_udev;
 177         struct mtx sc_mtx;
 178
 179         uint16_t sc_flag;
 180 #define UVISOR_FLAG_PALM4       0x0001
 181 #define UVISOR_FLAG_VISOR       0x0002
 182 #define UVISOR_FLAG_PALM35      0x0004
 183 #define UVISOR_FLAG_SEND_NOTIFY 0x0008
 184
 185         uint8_t sc_iface_no;
 186         uint8_t sc_iface_index;
 187 };
 188
 189 /* prototypes */
 190
 191 static device_probe_t uvisor_probe;
 192 static device_attach_t uvisor_attach;
 193 static device_detach_t uvisor_detach;
 194 static void uvisor_free_softc(struct uvisor_softc *);
 195
 196 static usb_callback_t uvisor_write_callback;
 197 static usb_callback_t uvisor_read_callback;
 198
 199 static usb_error_t uvisor_init(struct uvisor_softc *, struct usb_device *,
 200                     struct usb_config *);
 201 static void     uvisor_free(struct ucom_softc *);
 202 static void     uvisor_cfg_open(struct ucom_softc *);
 203 static void     uvisor_cfg_close(struct ucom_softc *);
 204 static void     uvisor_start_read(struct ucom_softc *);
 205 static void     uvisor_stop_read(struct ucom_softc *);
 206 static void     uvisor_start_write(struct ucom_softc *);
 207 static void     uvisor_stop_write(struct ucom_softc *);
 208
 209 static const struct usb_config uvisor_config[UVISOR_N_TRANSFER] = {
 210
 211         [UVISOR_BULK_DT_WR] = {
 212                 .type = UE_BULK,
 213                 .endpoint = UE_ADDR_ANY,
 214                 .direction = UE_DIR_OUT,
 215                 .bufsize = UVISOROBUFSIZE * UVISOROFRAMES,
 216                 .frames = UVISOROFRAMES,
 217                 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
 218                 .callback = &uvisor_write_callback,
 219         },
 220
 221         [UVISOR_BULK_DT_RD] = {
 222                 .type = UE_BULK,
 223                 .endpoint = UE_ADDR_ANY,
 224                 .direction = UE_DIR_IN,
 225                 .bufsize = UVISORIBUFSIZE,
 226                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
 227                 .callback = &uvisor_read_callback,
 228         },
 229 };
 230
 231 static const struct ucom_callback uvisor_callback = {
 232         .ucom_cfg_open = &uvisor_cfg_open,
 233         .ucom_cfg_close = &uvisor_cfg_close,
 234         .ucom_start_read = &uvisor_start_read,
 235         .ucom_stop_read = &uvisor_stop_read,
 236         .ucom_start_write = &uvisor_start_write,
 237         .ucom_stop_write = &uvisor_stop_write,
 238         .ucom_free = &uvisor_free,
 239 };
 240
 241 static device_method_t uvisor_methods[] = {
 242         DEVMETHOD(device_probe, uvisor_probe),
 243         DEVMETHOD(device_attach, uvisor_attach),
 244         DEVMETHOD(device_detach, uvisor_detach),
 245         DEVMETHOD_END
 246 };
 247
 248 static devclass_t uvisor_devclass;
 249
 250 static driver_t uvisor_driver = {
 251         .name = "uvisor",
 252         .methods = uvisor_methods,
 253         .size = sizeof(struct uvisor_softc),
 254 };
 255
 256 static const STRUCT_USB_HOST_ID uvisor_devs[] = {
 257 #define UVISOR_DEV(v,p,i) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i) }
 258         UVISOR_DEV(ACEECA, MEZ1000, UVISOR_FLAG_PALM4),
 259         UVISOR_DEV(ALPHASMART, DANA_SYNC, UVISOR_FLAG_PALM4),
 260         UVISOR_DEV(GARMIN, IQUE_3600, UVISOR_FLAG_PALM4),
 261         UVISOR_DEV(FOSSIL, WRISTPDA, UVISOR_FLAG_PALM4),
 262         UVISOR_DEV(HANDSPRING, VISOR, UVISOR_FLAG_VISOR),
 263         UVISOR_DEV(HANDSPRING, TREO, UVISOR_FLAG_PALM4),
 264         UVISOR_DEV(HANDSPRING, TREO600, UVISOR_FLAG_PALM4),
 265         UVISOR_DEV(PALM, M500, UVISOR_FLAG_PALM4),
 266         UVISOR_DEV(PALM, M505, UVISOR_FLAG_PALM4),
 267         UVISOR_DEV(PALM, M515, UVISOR_FLAG_PALM4),
 268         UVISOR_DEV(PALM, I705, UVISOR_FLAG_PALM4),
 269         UVISOR_DEV(PALM, M125, UVISOR_FLAG_PALM4),
 270         UVISOR_DEV(PALM, M130, UVISOR_FLAG_PALM4),
 271         UVISOR_DEV(PALM, TUNGSTEN_Z, UVISOR_FLAG_PALM4),
 272         UVISOR_DEV(PALM, TUNGSTEN_T, UVISOR_FLAG_PALM4),
 273         UVISOR_DEV(PALM, ZIRE, UVISOR_FLAG_PALM4),
 274         UVISOR_DEV(PALM, ZIRE31, UVISOR_FLAG_PALM4),
 275         UVISOR_DEV(SAMSUNG, I500, UVISOR_FLAG_PALM4),
 276         UVISOR_DEV(SONY, CLIE_40, 0),
 277         UVISOR_DEV(SONY, CLIE_41, 0),
 278         UVISOR_DEV(SONY, CLIE_S360, UVISOR_FLAG_PALM4),
 279         UVISOR_DEV(SONY, CLIE_NX60, UVISOR_FLAG_PALM4),
 280         UVISOR_DEV(SONY, CLIE_35, UVISOR_FLAG_PALM35),
 281 /*  UVISOR_DEV(SONY, CLIE_25, UVISOR_FLAG_PALM4 ), */
 282         UVISOR_DEV(SONY, CLIE_TJ37, UVISOR_FLAG_PALM4),
 283 /*  UVISOR_DEV(SONY, CLIE_TH55, UVISOR_FLAG_PALM4 ), See PR 80935 */
 284         UVISOR_DEV(TAPWAVE, ZODIAC, UVISOR_FLAG_PALM4),
 285 #undef UVISOR_DEV
 286 };
 287
 288 DRIVER_MODULE(uvisor, uhub, uvisor_driver, uvisor_devclass, NULL, 0);
 289 MODULE_DEPEND(uvisor, ucom, 1, 1, 1);
 290 MODULE_DEPEND(uvisor, usb, 1, 1, 1);
 291 MODULE_VERSION(uvisor, 1);
 292 USB_PNP_HOST_INFO(uvisor_devs);
 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         memcpy(uvisor_config_copy, uvisor_config,
 321             sizeof(uvisor_config_copy));
 322
 323         device_set_usb_desc(dev);
 324
 325         mtx_init(&sc->sc_mtx, "uvisor", NULL, MTX_DEF);
 326         ucom_ref(&sc->sc_super_ucom);
 327
 328         sc->sc_udev = uaa->device;
 329
 330         /* configure the device */
 331
 332         sc->sc_flag = USB_GET_DRIVER_INFO(uaa);
 333         sc->sc_iface_no = uaa->info.bIfaceNum;
 334         sc->sc_iface_index = UVISOR_IFACE_INDEX;
 335
 336         error = uvisor_init(sc, uaa->device, uvisor_config_copy);
 337
 338         if (error) {
 339                 DPRINTF("init failed, error=%s\n",
 340                     usbd_errstr(error));
 341                 goto detach;
 342         }
 343         error = usbd_transfer_setup(uaa->device, &sc->sc_iface_index,
 344             sc->sc_xfer, uvisor_config_copy, UVISOR_N_TRANSFER,
 345             sc, &sc->sc_mtx);
 346         if (error) {
 347                 DPRINTF("could not allocate all pipes\n");
 348                 goto detach;
 349         }
 350
 351         error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
 352             &uvisor_callback, &sc->sc_mtx);
 353         if (error) {
 354                 DPRINTF("ucom_attach failed\n");
 355                 goto detach;
 356         }
 357         ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
 358
 359         return (0);
 360
 361 detach:
 362         uvisor_detach(dev);
 363         return (ENXIO);
 364 }
 365
 366 static int
 367 uvisor_detach(device_t dev)
 368 {
 369         struct uvisor_softc *sc = device_get_softc(dev);
 370
 371         DPRINTF("sc=%p\n", sc);
 372
 373         ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
 374         usbd_transfer_unsetup(sc->sc_xfer, UVISOR_N_TRANSFER);
 375
 376         device_claim_softc(dev);
 377
 378         uvisor_free_softc(sc);
 379
 380         return (0);
 381 }
 382
 383 UCOM_UNLOAD_DRAIN(uvisor);
 384
 385 static void
 386 uvisor_free_softc(struct uvisor_softc *sc)
 387 {
 388         if (ucom_unref(&sc->sc_super_ucom)) {
 389                 mtx_destroy(&sc->sc_mtx);
 390                 device_free_softc(sc);
 391         }
 392 }
 393
 394 static void
 395 uvisor_free(struct ucom_softc *ucom)
 396 {
 397         uvisor_free_softc(ucom->sc_parent);
 398 }
 399
 400 static usb_error_t
 401 uvisor_init(struct uvisor_softc *sc, struct usb_device *udev, struct usb_config *config)
 402 {
 403         usb_error_t err = 0;
 404         struct usb_device_request req;
 405         struct uvisor_connection_info coninfo;
 406         struct uvisor_palm_connection_info pconinfo;
 407         uint16_t actlen;
 408         uint8_t buffer[256];
 409
 410         if (sc->sc_flag & UVISOR_FLAG_VISOR) {
 411                 DPRINTF("getting connection info\n");
 412                 req.bmRequestType = UT_READ_VENDOR_ENDPOINT;
 413                 req.bRequest = UVISOR_GET_CONNECTION_INFORMATION;
 414                 USETW(req.wValue, 0);
 415                 USETW(req.wIndex, 0);
 416                 USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE);
 417                 err = usbd_do_request_flags(udev, NULL,
 418                     &req, &coninfo, USB_SHORT_XFER_OK,
 419                     &actlen, USB_DEFAULT_TIMEOUT);
 420
 421                 if (err) {
 422                         goto done;
 423                 }
 424         }
 425 #ifdef USB_DEBUG
 426         if (sc->sc_flag & UVISOR_FLAG_VISOR) {
 427                 uint16_t i, np;
 428                 const char *desc;
 429
 430                 np = UGETW(coninfo.num_ports);
 431                 if (np > UVISOR_MAX_CONN) {
 432                         np = UVISOR_MAX_CONN;
 433                 }
 434                 DPRINTF("Number of ports: %d\n", np);
 435
 436                 for (i = 0; i < np; ++i) {
 437                         switch (coninfo.connections[i].port_function_id) {
 438                         case UVISOR_FUNCTION_GENERIC:
 439                                 desc = "Generic";
 440                                 break;
 441                         case UVISOR_FUNCTION_DEBUGGER:
 442                                 desc = "Debugger";
 443                                 break;
 444                         case UVISOR_FUNCTION_HOTSYNC:
 445                                 desc = "HotSync";
 446                                 break;
 447                         case UVISOR_FUNCTION_REMOTE_FILE_SYS:
 448                                 desc = "Remote File System";
 449                                 break;
 450                         default:
 451                                 desc = "unknown";
 452                                 break;
 453                         }
 454                         DPRINTF("Port %d is for %s\n",
 455                             coninfo.connections[i].port, desc);
 456                 }
 457         }
 458 #endif
 459
 460         if (sc->sc_flag & UVISOR_FLAG_PALM4) {
 461                 uint8_t port;
 462
 463                 /* Palm OS 4.0 Hack */
 464                 req.bmRequestType = UT_READ_VENDOR_ENDPOINT;
 465                 req.bRequest = UVISOR_GET_PALM_INFORMATION;
 466                 USETW(req.wValue, 0);
 467                 USETW(req.wIndex, 0);
 468                 USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN);
 469
 470                 err = usbd_do_request_flags
 471                     (udev, NULL, &req, &pconinfo, USB_SHORT_XFER_OK,
 472                     &actlen, USB_DEFAULT_TIMEOUT);
 473
 474                 if (err) {
 475                         goto done;
 476                 }
 477                 if (actlen < 12) {
 478                         DPRINTF("too little data\n");
 479                         err = USB_ERR_INVAL;
 480                         goto done;
 481                 }
 482                 if (pconinfo.endpoint_numbers_different) {
 483                         port = pconinfo.connections[0].end_point_info;
 484                         config[0].endpoint = (port & 0xF);      /* output */
 485                         config[1].endpoint = (port >> 4);       /* input */
 486                 } else {
 487                         port = pconinfo.connections[0].port;
 488                         config[0].endpoint = (port & 0xF);      /* output */
 489                         config[1].endpoint = (port & 0xF);      /* input */
 490                 }
 491 #if 0
 492                 req.bmRequestType = UT_READ_VENDOR_ENDPOINT;
 493                 req.bRequest = UVISOR_GET_PALM_INFORMATION;
 494                 USETW(req.wValue, 0);
 495                 USETW(req.wIndex, 0);
 496                 USETW(req.wLength, UVISOR_GET_PALM_INFORMATION_LEN);
 497                 err = usbd_do_request(udev, &req, buffer);
 498                 if (err) {
 499                         goto done;
 500                 }
 501 #endif
 502         }
 503         if (sc->sc_flag & UVISOR_FLAG_PALM35) {
 504                 /* get the config number */
 505                 DPRINTF("getting config info\n");
 506                 req.bmRequestType = UT_READ;
 507                 req.bRequest = UR_GET_CONFIG;
 508                 USETW(req.wValue, 0);
 509                 USETW(req.wIndex, 0);
 510                 USETW(req.wLength, 1);
 511
 512                 err = usbd_do_request(udev, NULL, &req, buffer);
 513                 if (err) {
 514                         goto done;
 515                 }
 516                 /* get the interface number */
 517                 DPRINTF("get the interface number\n");
 518                 req.bmRequestType = UT_READ_DEVICE;
 519                 req.bRequest = UR_GET_INTERFACE;
 520                 USETW(req.wValue, 0);
 521                 USETW(req.wIndex, 0);
 522                 USETW(req.wLength, 1);
 523                 err = usbd_do_request(udev, NULL, &req, buffer);
 524                 if (err) {
 525                         goto done;
 526                 }
 527         }
 528 #if 0
 529         uWord wAvail;
 530
 531         DPRINTF("getting available bytes\n");
 532         req.bmRequestType = UT_READ_VENDOR_ENDPOINT;
 533         req.bRequest = UVISOR_REQUEST_BYTES_AVAILABLE;
 534         USETW(req.wValue, 0);
 535         USETW(req.wIndex, 5);
 536         USETW(req.wLength, sizeof(wAvail));
 537         err = usbd_do_request(udev, NULL, &req, &wAvail);
 538         if (err) {
 539                 goto done;
 540         }
 541         DPRINTF("avail=%d\n", UGETW(wAvail));
 542 #endif
 543
 544         DPRINTF("done\n");
 545 done:
 546         return (err);
 547 }
 548
 549 static void
 550 uvisor_cfg_open(struct ucom_softc *ucom)
 551 {
 552         return;
 553 }
 554
 555 static void
 556 uvisor_cfg_close(struct ucom_softc *ucom)
 557 {
 558         struct uvisor_softc *sc = ucom->sc_parent;
 559         uint8_t buffer[UVISOR_CONNECTION_INFO_SIZE];
 560         struct usb_device_request req;
 561         usb_error_t err;
 562
 563         req.bmRequestType = UT_READ_VENDOR_ENDPOINT;    /* XXX read? */
 564         req.bRequest = UVISOR_CLOSE_NOTIFICATION;
 565         USETW(req.wValue, 0);
 566         USETW(req.wIndex, 0);
 567         USETW(req.wLength, UVISOR_CONNECTION_INFO_SIZE);
 568
 569         err = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 570             &req, buffer, 0, 1000);
 571         if (err) {
 572                 DPRINTFN(0, "close notification failed, error=%s\n",
 573                     usbd_errstr(err));
 574         }
 575 }
 576
 577 static void
 578 uvisor_start_read(struct ucom_softc *ucom)
 579 {
 580         struct uvisor_softc *sc = ucom->sc_parent;
 581
 582         usbd_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_RD]);
 583 }
 584
 585 static void
 586 uvisor_stop_read(struct ucom_softc *ucom)
 587 {
 588         struct uvisor_softc *sc = ucom->sc_parent;
 589
 590         usbd_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_RD]);
 591 }
 592
 593 static void
 594 uvisor_start_write(struct ucom_softc *ucom)
 595 {
 596         struct uvisor_softc *sc = ucom->sc_parent;
 597
 598         usbd_transfer_start(sc->sc_xfer[UVISOR_BULK_DT_WR]);
 599 }
 600
 601 static void
 602 uvisor_stop_write(struct ucom_softc *ucom)
 603 {
 604         struct uvisor_softc *sc = ucom->sc_parent;
 605
 606         usbd_transfer_stop(sc->sc_xfer[UVISOR_BULK_DT_WR]);
 607 }
 608
 609 static void
 610 uvisor_write_callback(struct usb_xfer *xfer, usb_error_t error)
 611 {
 612         struct uvisor_softc *sc = usbd_xfer_softc(xfer);
 613         struct usb_page_cache *pc;
 614         uint32_t actlen;
 615         uint8_t x;
 616
 617         switch (USB_GET_STATE(xfer)) {
 618         case USB_ST_SETUP:
 619         case USB_ST_TRANSFERRED:
 620 tr_setup:
 621                 for (x = 0; x != UVISOROFRAMES; x++) {
 622
 623                         usbd_xfer_set_frame_offset(xfer,
 624                             x * UVISOROBUFSIZE, x);
 625
 626                         pc = usbd_xfer_get_frame(xfer, x);
 627                         if (ucom_get_data(&sc->sc_ucom, pc, 0,
 628                             UVISOROBUFSIZE, &actlen)) {
 629                                 usbd_xfer_set_frame_len(xfer, x, actlen);
 630                         } else {
 631                                 break;
 632                         }
 633                 }
 634                 /* check for data */
 635                 if (x != 0) {
 636                         usbd_xfer_set_frames(xfer, x);
 637                         usbd_transfer_submit(xfer);
 638                 }
 639                 break;
 640
 641         default:                        /* Error */
 642                 if (error != USB_ERR_CANCELLED) {
 643                         /* try to clear stall first */
 644                         usbd_xfer_set_stall(xfer);
 645                         goto tr_setup;
 646                 }
 647                 break;
 648         }
 649 }
 650
 651 static void
 652 uvisor_read_callback(struct usb_xfer *xfer, usb_error_t error)
 653 {
 654         struct uvisor_softc *sc = usbd_xfer_softc(xfer);
 655         struct usb_page_cache *pc;
 656         int actlen;
 657
 658         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
 659
 660         switch (USB_GET_STATE(xfer)) {
 661         case USB_ST_TRANSFERRED:
 662                 pc = usbd_xfer_get_frame(xfer, 0);
 663                 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
 664
 665         case USB_ST_SETUP:
 666 tr_setup:
 667                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
 668                 usbd_transfer_submit(xfer);
 669                 return;
 670
 671         default:                        /* Error */
 672                 if (error != USB_ERR_CANCELLED) {
 673                         /* try to clear stall first */
 674                         usbd_xfer_set_stall(xfer);
 675                         goto tr_setup;
 676                 }
 677                 return;
 678         }
 679 }