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