sys/dev/usb/serial/uslcom.c

   1 /*      $OpenBSD: uslcom.c,v 1.17 2007/11/24 10:52:12 jsg Exp $ */
   2
   3 #include <sys/cdefs.h>
   4 __FBSDID("$FreeBSD$");
   5
   6 /*
   7  * Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org>
   8  *
   9  * Permission to use, copy, modify, and distribute this software for any
  10  * purpose with or without fee is hereby granted, provided that the above
  11  * copyright notice and this permission notice appear in all copies.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  14  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  15  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  16  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  17  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  18  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  19  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  20  */
  21
  22 #include <sys/stdint.h>
  23 #include <sys/stddef.h>
  24 #include <sys/param.h>
  25 #include <sys/queue.h>
  26 #include <sys/types.h>
  27 #include <sys/systm.h>
  28 #include <sys/kernel.h>
  29 #include <sys/bus.h>
  30 #include <sys/module.h>
  31 #include <sys/lock.h>
  32 #include <sys/mutex.h>
  33 #include <sys/condvar.h>
  34 #include <sys/sysctl.h>
  35 #include <sys/sx.h>
  36 #include <sys/unistd.h>
  37 #include <sys/callout.h>
  38 #include <sys/malloc.h>
  39 #include <sys/priv.h>
  40
  41 #include <dev/usb/usb.h>
  42 #include <dev/usb/usbdi.h>
  43 #include <dev/usb/usbdi_util.h>
  44 #include "usbdevs.h"
  45
  46 #define USB_DEBUG_VAR uslcom_debug
  47 #include <dev/usb/usb_debug.h>
  48 #include <dev/usb/usb_process.h>
  49
  50 #include <dev/usb/serial/usb_serial.h>
  51
  52 #ifdef USB_DEBUG
  53 static int uslcom_debug = 0;
  54
  55 SYSCTL_NODE(_hw_usb, OID_AUTO, uslcom, CTLFLAG_RW, 0, "USB uslcom");
  56 SYSCTL_INT(_hw_usb_uslcom, OID_AUTO, debug, CTLFLAG_RW,
  57     &uslcom_debug, 0, "Debug level");
  58 #endif
  59
  60 #define USLCOM_BULK_BUF_SIZE            1024
  61 #define USLCOM_CONFIG_INDEX     0
  62 #define USLCOM_IFACE_INDEX      0
  63
  64 #define USLCOM_SET_DATA_BITS(x) ((x) << 8)
  65
  66 #define USLCOM_WRITE            0x41
  67 #define USLCOM_READ             0xc1
  68
  69 #define USLCOM_UART             0x00
  70 #define USLCOM_BAUD_RATE        0x01
  71 #define USLCOM_DATA             0x03
  72 #define USLCOM_BREAK            0x05
  73 #define USLCOM_CTRL             0x07
  74
  75 #define USLCOM_UART_DISABLE     0x00
  76 #define USLCOM_UART_ENABLE      0x01
  77
  78 #define USLCOM_CTRL_DTR_ON      0x0001
  79 #define USLCOM_CTRL_DTR_SET     0x0100
  80 #define USLCOM_CTRL_RTS_ON      0x0002
  81 #define USLCOM_CTRL_RTS_SET     0x0200
  82 #define USLCOM_CTRL_CTS         0x0010
  83 #define USLCOM_CTRL_DSR         0x0020
  84 #define USLCOM_CTRL_DCD         0x0080
  85
  86 #define USLCOM_BAUD_REF         0x384000
  87
  88 #define USLCOM_STOP_BITS_1      0x00
  89 #define USLCOM_STOP_BITS_2      0x02
  90
  91 #define USLCOM_PARITY_NONE      0x00
  92 #define USLCOM_PARITY_ODD       0x10
  93 #define USLCOM_PARITY_EVEN      0x20
  94
  95 #define USLCOM_PORT_NO          0xFFFF /* XXX think this should be 0 --hps */
  96
  97 #define USLCOM_BREAK_OFF        0x00
  98 #define USLCOM_BREAK_ON         0x01
  99
 100 enum {
 101         USLCOM_BULK_DT_WR,
 102         USLCOM_BULK_DT_RD,
 103         USLCOM_N_TRANSFER,
 104 };
 105
 106 struct uslcom_softc {
 107         struct ucom_super_softc sc_super_ucom;
 108         struct ucom_softc sc_ucom;
 109
 110         struct usb_xfer *sc_xfer[USLCOM_N_TRANSFER];
 111         struct usb_device *sc_udev;
 112         struct mtx sc_mtx;
 113
 114         uint8_t          sc_msr;
 115         uint8_t          sc_lsr;
 116 };
 117
 118 static device_probe_t uslcom_probe;
 119 static device_attach_t uslcom_attach;
 120 static device_detach_t uslcom_detach;
 121
 122 static usb_callback_t uslcom_write_callback;
 123 static usb_callback_t uslcom_read_callback;
 124
 125 static void uslcom_open(struct ucom_softc *);
 126 static void uslcom_close(struct ucom_softc *);
 127 static void uslcom_set_dtr(struct ucom_softc *, uint8_t);
 128 static void uslcom_set_rts(struct ucom_softc *, uint8_t);
 129 static void uslcom_set_break(struct ucom_softc *, uint8_t);
 130 static int uslcom_pre_param(struct ucom_softc *, struct termios *);
 131 static void uslcom_param(struct ucom_softc *, struct termios *);
 132 static void uslcom_get_status(struct ucom_softc *, uint8_t *, uint8_t *);
 133 static void uslcom_start_read(struct ucom_softc *);
 134 static void uslcom_stop_read(struct ucom_softc *);
 135 static void uslcom_start_write(struct ucom_softc *);
 136 static void uslcom_stop_write(struct ucom_softc *);
 137 static void uslcom_poll(struct ucom_softc *ucom);
 138
 139 static const struct usb_config uslcom_config[USLCOM_N_TRANSFER] = {
 140
 141         [USLCOM_BULK_DT_WR] = {
 142                 .type = UE_BULK,
 143                 .endpoint = UE_ADDR_ANY,
 144                 .direction = UE_DIR_OUT,
 145                 .bufsize = USLCOM_BULK_BUF_SIZE,
 146                 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
 147                 .callback = &uslcom_write_callback,
 148         },
 149
 150         [USLCOM_BULK_DT_RD] = {
 151                 .type = UE_BULK,
 152                 .endpoint = UE_ADDR_ANY,
 153                 .direction = UE_DIR_IN,
 154                 .bufsize = USLCOM_BULK_BUF_SIZE,
 155                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
 156                 .callback = &uslcom_read_callback,
 157         },
 158 };
 159
 160 static struct ucom_callback uslcom_callback = {
 161         .ucom_cfg_open = &uslcom_open,
 162         .ucom_cfg_close = &uslcom_close,
 163         .ucom_cfg_get_status = &uslcom_get_status,
 164         .ucom_cfg_set_dtr = &uslcom_set_dtr,
 165         .ucom_cfg_set_rts = &uslcom_set_rts,
 166         .ucom_cfg_set_break = &uslcom_set_break,
 167         .ucom_cfg_param = &uslcom_param,
 168         .ucom_pre_param = &uslcom_pre_param,
 169         .ucom_start_read = &uslcom_start_read,
 170         .ucom_stop_read = &uslcom_stop_read,
 171         .ucom_start_write = &uslcom_start_write,
 172         .ucom_stop_write = &uslcom_stop_write,
 173         .ucom_poll = &uslcom_poll,
 174 };
 175
 176 static const STRUCT_USB_HOST_ID uslcom_devs[] = {
 177 #define USLCOM_DEV(v,p)  { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
 178     USLCOM_DEV(BALTECH, CARDREADER),
 179     USLCOM_DEV(CLIPSAL, 5500PCU),
 180     USLCOM_DEV(DATAAPEX, MULTICOM),
 181     USLCOM_DEV(DELL, DW700),
 182     USLCOM_DEV(DIGIANSWER, ZIGBEE802154),
 183     USLCOM_DEV(DYNASTREAM, ANTDEVBOARD),
 184     USLCOM_DEV(DYNASTREAM, ANTDEVBOARD2),
 185     USLCOM_DEV(DYNASTREAM, ANT2USB),
 186     USLCOM_DEV(ELV, USBI2C),
 187     USLCOM_DEV(FOXCONN, PIRELLI_DP_L10),
 188     USLCOM_DEV(FOXCONN, TCOM_TC_300),
 189     USLCOM_DEV(GEMALTO, PROXPU),
 190     USLCOM_DEV(JABLOTRON, PC60B),
 191     USLCOM_DEV(MEI, CASHFLOW_SC),
 192     USLCOM_DEV(MEI, S2000),
 193     USLCOM_DEV(JABLOTRON, PC60B),
 194     USLCOM_DEV(OWEN, AC4),
 195     USLCOM_DEV(PHILIPS, ACE1001),
 196     USLCOM_DEV(PLX, CA42),
 197     USLCOM_DEV(RENESAS, RX610),
 198     USLCOM_DEV(SILABS, AEROCOMM),
 199     USLCOM_DEV(SILABS, AMBER_AMB2560),
 200     USLCOM_DEV(SILABS, ARGUSISP),
 201     USLCOM_DEV(SILABS, ARKHAM_DS101_A),
 202     USLCOM_DEV(SILABS, ARKHAM_DS101_M),
 203     USLCOM_DEV(SILABS, ARYGON_MIFARE),
 204     USLCOM_DEV(SILABS, AVIT_USB_TTL),
 205     USLCOM_DEV(SILABS, B_G_H3000),
 206     USLCOM_DEV(SILABS, BALLUFF_RFID),
 207     USLCOM_DEV(SILABS, BEI_VCP),
 208     USLCOM_DEV(SILABS, BSM7DUSB),
 209     USLCOM_DEV(SILABS, BURNSIDE),
 210     USLCOM_DEV(SILABS, C2_EDGE_MODEM),
 211     USLCOM_DEV(SILABS, CP2102),
 212     USLCOM_DEV(SILABS, CP210X_2),
 213     USLCOM_DEV(SILABS, CRUMB128),
 214     USLCOM_DEV(SILABS, CYGNAL),
 215     USLCOM_DEV(SILABS, CYGNAL_DEBUG),
 216     USLCOM_DEV(SILABS, CYGNAL_GPS),
 217     USLCOM_DEV(SILABS, DEGREE),
 218     USLCOM_DEV(SILABS, EMS_C1007),
 219     USLCOM_DEV(SILABS, HELICOM),
 220     USLCOM_DEV(SILABS, IMS_USB_RS422),
 221     USLCOM_DEV(SILABS, INFINITY_MIC),
 222     USLCOM_DEV(SILABS, INSYS_MODEM),
 223     USLCOM_DEV(SILABS, KYOCERA_GPS),
 224     USLCOM_DEV(SILABS, LIPOWSKY_HARP),
 225     USLCOM_DEV(SILABS, LIPOWSKY_JTAG),
 226     USLCOM_DEV(SILABS, LIPOWSKY_LIN),
 227     USLCOM_DEV(SILABS, MC35PU),
 228     USLCOM_DEV(SILABS, MJS_TOSLINK),
 229     USLCOM_DEV(SILABS, MSD_DASHHAWK),
 230     USLCOM_DEV(SILABS, POLOLU),
 231     USLCOM_DEV(SILABS, PROCYON_AVS),
 232     USLCOM_DEV(SILABS, SB_PARAMOUNT_ME),
 233     USLCOM_DEV(SILABS, SUUNTO),
 234     USLCOM_DEV(SILABS, TAMSMASTER),
 235     USLCOM_DEV(SILABS, TELEGESYS_ETRX2),
 236     USLCOM_DEV(SILABS, TRACIENT),
 237     USLCOM_DEV(SILABS, TRAQMATE),
 238     USLCOM_DEV(SILABS, USBCOUNT50),
 239     USLCOM_DEV(SILABS, USBPULSE100),
 240     USLCOM_DEV(SILABS, USBSCOPE50),
 241     USLCOM_DEV(SILABS, USBWAVE12),
 242     USLCOM_DEV(SILABS, VSTABI),
 243     USLCOM_DEV(SILABS, WAVIT),
 244     USLCOM_DEV(SILABS, WMRBATT),
 245     USLCOM_DEV(SILABS, WMRRIGBLASTER),
 246     USLCOM_DEV(SILABS, WMRRIGTALK),
 247     USLCOM_DEV(SILABS, ZEPHYR_BIO),
 248     USLCOM_DEV(SILABS2, DCU11CLONE),
 249     USLCOM_DEV(SILABS3, GPRS_MODEM),
 250     USLCOM_DEV(SILABS4, 100EU_MODEM),
 251     USLCOM_DEV(SYNTECH, CYPHERLAB100),
 252     USLCOM_DEV(USI, MC60),
 253     USLCOM_DEV(VAISALA, CABLE),
 254     USLCOM_DEV(WAGO, SERVICECABLE),
 255     USLCOM_DEV(WAVESENSE, JAZZ),
 256     USLCOM_DEV(WIENERPLEINBAUS, PL512),
 257     USLCOM_DEV(WIENERPLEINBAUS, RCM),
 258     USLCOM_DEV(WIENERPLEINBAUS, MPOD),
 259     USLCOM_DEV(WIENERPLEINBAUS, CML),
 260 #undef USLCOM_DEV
 261 };
 262
 263 static device_method_t uslcom_methods[] = {
 264         DEVMETHOD(device_probe, uslcom_probe),
 265         DEVMETHOD(device_attach, uslcom_attach),
 266         DEVMETHOD(device_detach, uslcom_detach),
 267         {0, 0}
 268 };
 269
 270 static devclass_t uslcom_devclass;
 271
 272 static driver_t uslcom_driver = {
 273         .name = "uslcom",
 274         .methods = uslcom_methods,
 275         .size = sizeof(struct uslcom_softc),
 276 };
 277
 278 DRIVER_MODULE(uslcom, uhub, uslcom_driver, uslcom_devclass, NULL, 0);
 279 MODULE_DEPEND(uslcom, ucom, 1, 1, 1);
 280 MODULE_DEPEND(uslcom, usb, 1, 1, 1);
 281 MODULE_VERSION(uslcom, 1);
 282
 283 static int
 284 uslcom_probe(device_t dev)
 285 {
 286         struct usb_attach_arg *uaa = device_get_ivars(dev);
 287
 288         DPRINTFN(11, "\n");
 289
 290         if (uaa->usb_mode != USB_MODE_HOST) {
 291                 return (ENXIO);
 292         }
 293         if (uaa->info.bConfigIndex != USLCOM_CONFIG_INDEX) {
 294                 return (ENXIO);
 295         }
 296         if (uaa->info.bIfaceIndex != USLCOM_IFACE_INDEX) {
 297                 return (ENXIO);
 298         }
 299         return (usbd_lookup_id_by_uaa(uslcom_devs, sizeof(uslcom_devs), uaa));
 300 }
 301
 302 static int
 303 uslcom_attach(device_t dev)
 304 {
 305         struct usb_attach_arg *uaa = device_get_ivars(dev);
 306         struct uslcom_softc *sc = device_get_softc(dev);
 307         int error;
 308
 309         DPRINTFN(11, "\n");
 310
 311         device_set_usb_desc(dev);
 312         mtx_init(&sc->sc_mtx, "uslcom", NULL, MTX_DEF);
 313
 314         sc->sc_udev = uaa->device;
 315
 316         error = usbd_transfer_setup(uaa->device,
 317             &uaa->info.bIfaceIndex, sc->sc_xfer, uslcom_config,
 318             USLCOM_N_TRANSFER, sc, &sc->sc_mtx);
 319         if (error) {
 320                 DPRINTF("one or more missing USB endpoints, "
 321                     "error=%s\n", usbd_errstr(error));
 322                 goto detach;
 323         }
 324         /* clear stall at first run */
 325         mtx_lock(&sc->sc_mtx);
 326         usbd_xfer_set_stall(sc->sc_xfer[USLCOM_BULK_DT_WR]);
 327         usbd_xfer_set_stall(sc->sc_xfer[USLCOM_BULK_DT_RD]);
 328         mtx_unlock(&sc->sc_mtx);
 329
 330         error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
 331             &uslcom_callback, &sc->sc_mtx);
 332         if (error) {
 333                 goto detach;
 334         }
 335         ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
 336
 337         return (0);
 338
 339 detach:
 340         uslcom_detach(dev);
 341         return (ENXIO);
 342 }
 343
 344 static int
 345 uslcom_detach(device_t dev)
 346 {
 347         struct uslcom_softc *sc = device_get_softc(dev);
 348
 349         DPRINTF("sc=%p\n", sc);
 350
 351         ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
 352         usbd_transfer_unsetup(sc->sc_xfer, USLCOM_N_TRANSFER);
 353         mtx_destroy(&sc->sc_mtx);
 354
 355         return (0);
 356 }
 357
 358 static void
 359 uslcom_open(struct ucom_softc *ucom)
 360 {
 361         struct uslcom_softc *sc = ucom->sc_parent;
 362         struct usb_device_request req;
 363
 364         req.bmRequestType = USLCOM_WRITE;
 365         req.bRequest = USLCOM_UART;
 366         USETW(req.wValue, USLCOM_UART_ENABLE);
 367         USETW(req.wIndex, USLCOM_PORT_NO);
 368         USETW(req.wLength, 0);
 369
 370         if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 371             &req, NULL, 0, 1000)) {
 372                 DPRINTF("UART enable failed (ignored)\n");
 373         }
 374 }
 375
 376 static void
 377 uslcom_close(struct ucom_softc *ucom)
 378 {
 379         struct uslcom_softc *sc = ucom->sc_parent;
 380         struct usb_device_request req;
 381
 382         req.bmRequestType = USLCOM_WRITE;
 383         req.bRequest = USLCOM_UART;
 384         USETW(req.wValue, USLCOM_UART_DISABLE);
 385         USETW(req.wIndex, USLCOM_PORT_NO);
 386         USETW(req.wLength, 0);
 387
 388         if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 389             &req, NULL, 0, 1000)) {
 390                 DPRINTF("UART disable failed (ignored)\n");
 391         }
 392 }
 393
 394 static void
 395 uslcom_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
 396 {
 397         struct uslcom_softc *sc = ucom->sc_parent;
 398         struct usb_device_request req;
 399         uint16_t ctl;
 400
 401         DPRINTF("onoff = %d\n", onoff);
 402
 403         ctl = onoff ? USLCOM_CTRL_DTR_ON : 0;
 404         ctl |= USLCOM_CTRL_DTR_SET;
 405
 406         req.bmRequestType = USLCOM_WRITE;
 407         req.bRequest = USLCOM_CTRL;
 408         USETW(req.wValue, ctl);
 409         USETW(req.wIndex, USLCOM_PORT_NO);
 410         USETW(req.wLength, 0);
 411
 412         if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 413             &req, NULL, 0, 1000)) {
 414                 DPRINTF("Setting DTR failed (ignored)\n");
 415         }
 416 }
 417
 418 static void
 419 uslcom_set_rts(struct ucom_softc *ucom, uint8_t onoff)
 420 {
 421         struct uslcom_softc *sc = ucom->sc_parent;
 422         struct usb_device_request req;
 423         uint16_t ctl;
 424
 425         DPRINTF("onoff = %d\n", onoff);
 426
 427         ctl = onoff ? USLCOM_CTRL_RTS_ON : 0;
 428         ctl |= USLCOM_CTRL_RTS_SET;
 429
 430         req.bmRequestType = USLCOM_WRITE;
 431         req.bRequest = USLCOM_CTRL;
 432         USETW(req.wValue, ctl);
 433         USETW(req.wIndex, USLCOM_PORT_NO);
 434         USETW(req.wLength, 0);
 435
 436         if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 437             &req, NULL, 0, 1000)) {
 438                 DPRINTF("Setting DTR failed (ignored)\n");
 439         }
 440 }
 441
 442 static int
 443 uslcom_pre_param(struct ucom_softc *ucom, struct termios *t)
 444 {
 445         if (t->c_ospeed <= 0 || t->c_ospeed > 921600)
 446                 return (EINVAL);
 447         return (0);
 448 }
 449
 450 static void
 451 uslcom_param(struct ucom_softc *ucom, struct termios *t)
 452 {
 453         struct uslcom_softc *sc = ucom->sc_parent;
 454         struct usb_device_request req;
 455         uint16_t data;
 456
 457         DPRINTF("\n");
 458
 459         req.bmRequestType = USLCOM_WRITE;
 460         req.bRequest = USLCOM_BAUD_RATE;
 461         USETW(req.wValue, USLCOM_BAUD_REF / t->c_ospeed);
 462         USETW(req.wIndex, USLCOM_PORT_NO);
 463         USETW(req.wLength, 0);
 464
 465         if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 466             &req, NULL, 0, 1000)) {
 467                 DPRINTF("Set baudrate failed (ignored)\n");
 468         }
 469
 470         if (t->c_cflag & CSTOPB)
 471                 data = USLCOM_STOP_BITS_2;
 472         else
 473                 data = USLCOM_STOP_BITS_1;
 474         if (t->c_cflag & PARENB) {
 475                 if (t->c_cflag & PARODD)
 476                         data |= USLCOM_PARITY_ODD;
 477                 else
 478                         data |= USLCOM_PARITY_EVEN;
 479         } else
 480                 data |= USLCOM_PARITY_NONE;
 481         switch (t->c_cflag & CSIZE) {
 482         case CS5:
 483                 data |= USLCOM_SET_DATA_BITS(5);
 484                 break;
 485         case CS6:
 486                 data |= USLCOM_SET_DATA_BITS(6);
 487                 break;
 488         case CS7:
 489                 data |= USLCOM_SET_DATA_BITS(7);
 490                 break;
 491         case CS8:
 492                 data |= USLCOM_SET_DATA_BITS(8);
 493                 break;
 494         }
 495
 496         req.bmRequestType = USLCOM_WRITE;
 497         req.bRequest = USLCOM_DATA;
 498         USETW(req.wValue, data);
 499         USETW(req.wIndex, USLCOM_PORT_NO);
 500         USETW(req.wLength, 0);
 501
 502         if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 503             &req, NULL, 0, 1000)) {
 504                 DPRINTF("Set format failed (ignored)\n");
 505         }
 506         return;
 507 }
 508
 509 static void
 510 uslcom_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
 511 {
 512         struct uslcom_softc *sc = ucom->sc_parent;
 513
 514         DPRINTF("\n");
 515
 516         *lsr = sc->sc_lsr;
 517         *msr = sc->sc_msr;
 518 }
 519
 520 static void
 521 uslcom_set_break(struct ucom_softc *ucom, uint8_t onoff)
 522 {
 523         struct uslcom_softc *sc = ucom->sc_parent;
 524         struct usb_device_request req;
 525         uint16_t brk = onoff ? USLCOM_BREAK_ON : USLCOM_BREAK_OFF;
 526
 527         req.bmRequestType = USLCOM_WRITE;
 528         req.bRequest = USLCOM_BREAK;
 529         USETW(req.wValue, brk);
 530         USETW(req.wIndex, USLCOM_PORT_NO);
 531         USETW(req.wLength, 0);
 532
 533         if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 534             &req, NULL, 0, 1000)) {
 535                 DPRINTF("Set BREAK failed (ignored)\n");
 536         }
 537 }
 538
 539 static void
 540 uslcom_write_callback(struct usb_xfer *xfer, usb_error_t error)
 541 {
 542         struct uslcom_softc *sc = usbd_xfer_softc(xfer);
 543         struct usb_page_cache *pc;
 544         uint32_t actlen;
 545
 546         switch (USB_GET_STATE(xfer)) {
 547         case USB_ST_SETUP:
 548         case USB_ST_TRANSFERRED:
 549 tr_setup:
 550                 pc = usbd_xfer_get_frame(xfer, 0);
 551                 if (ucom_get_data(&sc->sc_ucom, pc, 0,
 552                     USLCOM_BULK_BUF_SIZE, &actlen)) {
 553
 554                         DPRINTF("actlen = %d\n", actlen);
 555
 556                         usbd_xfer_set_frame_len(xfer, 0, actlen);
 557                         usbd_transfer_submit(xfer);
 558                 }
 559                 return;
 560
 561         default:                        /* Error */
 562                 if (error != USB_ERR_CANCELLED) {
 563                         /* try to clear stall first */
 564                         usbd_xfer_set_stall(xfer);
 565                         goto tr_setup;
 566                 }
 567                 return;
 568         }
 569 }
 570
 571 static void
 572 uslcom_read_callback(struct usb_xfer *xfer, usb_error_t error)
 573 {
 574         struct uslcom_softc *sc = usbd_xfer_softc(xfer);
 575         struct usb_page_cache *pc;
 576         int actlen;
 577
 578         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
 579
 580         switch (USB_GET_STATE(xfer)) {
 581         case USB_ST_TRANSFERRED:
 582                 pc = usbd_xfer_get_frame(xfer, 0);
 583                 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
 584
 585         case USB_ST_SETUP:
 586 tr_setup:
 587                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
 588                 usbd_transfer_submit(xfer);
 589                 return;
 590
 591         default:                        /* Error */
 592                 if (error != USB_ERR_CANCELLED) {
 593                         /* try to clear stall first */
 594                         usbd_xfer_set_stall(xfer);
 595                         goto tr_setup;
 596                 }
 597                 return;
 598         }
 599 }
 600
 601 static void
 602 uslcom_start_read(struct ucom_softc *ucom)
 603 {
 604         struct uslcom_softc *sc = ucom->sc_parent;
 605
 606         /* start read endpoint */
 607         usbd_transfer_start(sc->sc_xfer[USLCOM_BULK_DT_RD]);
 608 }
 609
 610 static void
 611 uslcom_stop_read(struct ucom_softc *ucom)
 612 {
 613         struct uslcom_softc *sc = ucom->sc_parent;
 614
 615         /* stop read endpoint */
 616         usbd_transfer_stop(sc->sc_xfer[USLCOM_BULK_DT_RD]);
 617 }
 618
 619 static void
 620 uslcom_start_write(struct ucom_softc *ucom)
 621 {
 622         struct uslcom_softc *sc = ucom->sc_parent;
 623
 624         usbd_transfer_start(sc->sc_xfer[USLCOM_BULK_DT_WR]);
 625 }
 626
 627 static void
 628 uslcom_stop_write(struct ucom_softc *ucom)
 629 {
 630         struct uslcom_softc *sc = ucom->sc_parent;
 631
 632         usbd_transfer_stop(sc->sc_xfer[USLCOM_BULK_DT_WR]);
 633 }
 634
 635 static void
 636 uslcom_poll(struct ucom_softc *ucom)
 637 {
 638         struct uslcom_softc *sc = ucom->sc_parent;
 639         usbd_transfer_poll(sc->sc_xfer, USLCOM_N_TRANSFER);
 640 }