sys/dev/usb/serial/uplcom.c

   1 /*      $NetBSD: uplcom.c,v 1.21 2001/11/13 06:24:56 lukem Exp $        */
   2
   3 #include <sys/cdefs.h>
   4 __FBSDID("$FreeBSD$");
   5
   6 /*-
   7  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD AND BSD-2-Clause-NetBSD
   8  *
   9  * Copyright (c) 2001-2003, 2005 Shunsuke Akiyama <akiyama@jp.FreeBSD.org>.
  10  * All rights reserved.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /*-
  35  * Copyright (c) 2001 The NetBSD Foundation, Inc.
  36  * All rights reserved.
  37  *
  38  * This code is derived from software contributed to The NetBSD Foundation
  39  * by Ichiro FUKUHARA (ichiro@ichiro.org).
  40  *
  41  * Redistribution and use in source and binary forms, with or without
  42  * modification, are permitted provided that the following conditions
  43  * are met:
  44  * 1. Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  * 2. Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in the
  48  *    documentation and/or other materials provided with the distribution.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  51  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  52  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  53  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  54  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  55  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  56  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  57  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  58  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  59  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  60  * POSSIBILITY OF SUCH DAMAGE.
  61  */
  62
  63 /*
  64  * This driver supports several USB-to-RS232 serial adapters driven by
  65  * Prolific PL-2303, PL-2303X and probably PL-2303HX USB-to-RS232
  66  * bridge chip.  The adapters are sold under many different brand
  67  * names.
  68  *
  69  * Datasheets are available at Prolific www site at
  70  * http://www.prolific.com.tw.  The datasheets don't contain full
  71  * programming information for the chip.
  72  *
  73  * PL-2303HX is probably programmed the same as PL-2303X.
  74  *
  75  * There are several differences between PL-2303 and PL-2303(H)X.
  76  * PL-2303(H)X can do higher bitrate in bulk mode, has _probably_
  77  * different command for controlling CRTSCTS and needs special
  78  * sequence of commands for initialization which aren't also
  79  * documented in the datasheet.
  80  */
  81
  82 #include <sys/stdint.h>
  83 #include <sys/stddef.h>
  84 #include <sys/param.h>
  85 #include <sys/queue.h>
  86 #include <sys/types.h>
  87 #include <sys/systm.h>
  88 #include <sys/kernel.h>
  89 #include <sys/bus.h>
  90 #include <sys/module.h>
  91 #include <sys/lock.h>
  92 #include <sys/mutex.h>
  93 #include <sys/condvar.h>
  94 #include <sys/sysctl.h>
  95 #include <sys/sx.h>
  96 #include <sys/unistd.h>
  97 #include <sys/callout.h>
  98 #include <sys/malloc.h>
  99 #include <sys/priv.h>
 100
 101 #include <dev/usb/usb.h>
 102 #include <dev/usb/usbdi.h>
 103 #include <dev/usb/usbdi_util.h>
 104 #include <dev/usb/usb_cdc.h>
 105 #include "usbdevs.h"
 106
 107 #define USB_DEBUG_VAR uplcom_debug
 108 #include <dev/usb/usb_debug.h>
 109 #include <dev/usb/usb_process.h>
 110
 111 #include <dev/usb/serial/usb_serial.h>
 112
 113 #ifdef USB_DEBUG
 114 static int uplcom_debug = 0;
 115
 116 static SYSCTL_NODE(_hw_usb, OID_AUTO, uplcom, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
 117     "USB uplcom");
 118 SYSCTL_INT(_hw_usb_uplcom, OID_AUTO, debug, CTLFLAG_RWTUN,
 119     &uplcom_debug, 0, "Debug level");
 120 #endif
 121
 122 #define UPLCOM_MODVER                   1       /* module version */
 123
 124 #define UPLCOM_CONFIG_INDEX             0
 125 #define UPLCOM_IFACE_INDEX              0
 126 #define UPLCOM_SECOND_IFACE_INDEX       1
 127
 128 #ifndef UPLCOM_INTR_INTERVAL
 129 #define UPLCOM_INTR_INTERVAL            0       /* default */
 130 #endif
 131
 132 #define UPLCOM_BULK_BUF_SIZE 1024       /* bytes */
 133
 134 #define UPLCOM_SET_REQUEST              0x01
 135 #define UPLCOM_SET_CRTSCTS              0x41
 136 #define UPLCOM_SET_CRTSCTS_PL2303X      0x61
 137 #define RSAQ_STATUS_CTS                 0x80
 138 #define RSAQ_STATUS_OVERRUN_ERROR       0x40
 139 #define RSAQ_STATUS_PARITY_ERROR        0x20
 140 #define RSAQ_STATUS_FRAME_ERROR 0x10
 141 #define RSAQ_STATUS_RING                0x08
 142 #define RSAQ_STATUS_BREAK_ERROR 0x04
 143 #define RSAQ_STATUS_DSR                 0x02
 144 #define RSAQ_STATUS_DCD                 0x01
 145
 146 #define TYPE_PL2303                     0
 147 #define TYPE_PL2303HX                   1
 148 #define TYPE_PL2303HXD                  2
 149
 150 #define UPLCOM_STATE_INDEX              8
 151
 152 enum {
 153         UPLCOM_BULK_DT_WR,
 154         UPLCOM_BULK_DT_RD,
 155         UPLCOM_INTR_DT_RD,
 156         UPLCOM_N_TRANSFER,
 157 };
 158
 159 struct uplcom_softc {
 160         struct ucom_super_softc sc_super_ucom;
 161         struct ucom_softc sc_ucom;
 162
 163         struct usb_xfer *sc_xfer[UPLCOM_N_TRANSFER];
 164         struct usb_device *sc_udev;
 165         struct mtx sc_mtx;
 166
 167         uint16_t sc_line;
 168
 169         uint8_t sc_lsr;                 /* local status register */
 170         uint8_t sc_msr;                 /* uplcom status register */
 171         uint8_t sc_chiptype;            /* type of chip */
 172         uint8_t sc_ctrl_iface_no;
 173         uint8_t sc_data_iface_no;
 174         uint8_t sc_iface_index[2];
 175 };
 176
 177 /* prototypes */
 178
 179 static usb_error_t uplcom_reset(struct uplcom_softc *, struct usb_device *);
 180 static usb_error_t uplcom_pl2303_do(struct usb_device *, uint8_t, uint8_t,
 181                         uint16_t, uint16_t, uint16_t);
 182 static int      uplcom_pl2303_init(struct usb_device *, uint8_t);
 183 static void     uplcom_free(struct ucom_softc *);
 184 static void     uplcom_cfg_set_dtr(struct ucom_softc *, uint8_t);
 185 static void     uplcom_cfg_set_rts(struct ucom_softc *, uint8_t);
 186 static void     uplcom_cfg_set_break(struct ucom_softc *, uint8_t);
 187 static int      uplcom_pre_param(struct ucom_softc *, struct termios *);
 188 static void     uplcom_cfg_param(struct ucom_softc *, struct termios *);
 189 static void     uplcom_start_read(struct ucom_softc *);
 190 static void     uplcom_stop_read(struct ucom_softc *);
 191 static void     uplcom_start_write(struct ucom_softc *);
 192 static void     uplcom_stop_write(struct ucom_softc *);
 193 static void     uplcom_cfg_get_status(struct ucom_softc *, uint8_t *,
 194                     uint8_t *);
 195 static void     uplcom_poll(struct ucom_softc *ucom);
 196
 197 static device_probe_t uplcom_probe;
 198 static device_attach_t uplcom_attach;
 199 static device_detach_t uplcom_detach;
 200 static void uplcom_free_softc(struct uplcom_softc *);
 201
 202 static usb_callback_t uplcom_intr_callback;
 203 static usb_callback_t uplcom_write_callback;
 204 static usb_callback_t uplcom_read_callback;
 205
 206 static const struct usb_config uplcom_config_data[UPLCOM_N_TRANSFER] = {
 207
 208         [UPLCOM_BULK_DT_WR] = {
 209                 .type = UE_BULK,
 210                 .endpoint = UE_ADDR_ANY,
 211                 .direction = UE_DIR_OUT,
 212                 .bufsize = UPLCOM_BULK_BUF_SIZE,
 213                 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
 214                 .callback = &uplcom_write_callback,
 215                 .if_index = 0,
 216         },
 217
 218         [UPLCOM_BULK_DT_RD] = {
 219                 .type = UE_BULK,
 220                 .endpoint = UE_ADDR_ANY,
 221                 .direction = UE_DIR_IN,
 222                 .bufsize = UPLCOM_BULK_BUF_SIZE,
 223                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
 224                 .callback = &uplcom_read_callback,
 225                 .if_index = 0,
 226         },
 227
 228         [UPLCOM_INTR_DT_RD] = {
 229                 .type = UE_INTERRUPT,
 230                 .endpoint = UE_ADDR_ANY,
 231                 .direction = UE_DIR_IN,
 232                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
 233                 .bufsize = 0,   /* use wMaxPacketSize */
 234                 .callback = &uplcom_intr_callback,
 235                 .if_index = 1,
 236         },
 237 };
 238
 239 static struct ucom_callback uplcom_callback = {
 240         .ucom_cfg_get_status = &uplcom_cfg_get_status,
 241         .ucom_cfg_set_dtr = &uplcom_cfg_set_dtr,
 242         .ucom_cfg_set_rts = &uplcom_cfg_set_rts,
 243         .ucom_cfg_set_break = &uplcom_cfg_set_break,
 244         .ucom_cfg_param = &uplcom_cfg_param,
 245         .ucom_pre_param = &uplcom_pre_param,
 246         .ucom_start_read = &uplcom_start_read,
 247         .ucom_stop_read = &uplcom_stop_read,
 248         .ucom_start_write = &uplcom_start_write,
 249         .ucom_stop_write = &uplcom_stop_write,
 250         .ucom_poll = &uplcom_poll,
 251         .ucom_free = &uplcom_free,
 252 };
 253
 254 #define UPLCOM_DEV(v,p)                         \
 255   { USB_VENDOR(USB_VENDOR_##v), USB_PRODUCT(USB_PRODUCT_##v##_##p) }
 256
 257 static const STRUCT_USB_HOST_ID uplcom_devs[] = {
 258         UPLCOM_DEV(ACERP, S81),                 /* BenQ S81 phone */
 259         UPLCOM_DEV(ADLINK, ND6530),             /* ADLINK ND-6530 USB-Serial */
 260         UPLCOM_DEV(ALCATEL, OT535),             /* Alcatel One Touch 535/735 */
 261         UPLCOM_DEV(ALCOR, AU9720),              /* Alcor AU9720 USB 2.0-RS232 */
 262         UPLCOM_DEV(ANCHOR, SERIAL),             /* Anchor Serial adapter */
 263         UPLCOM_DEV(ATEN, UC232A),               /* PLANEX USB-RS232 URS-03 */
 264         UPLCOM_DEV(BELKIN, F5U257),             /* Belkin F5U257 USB to Serial */
 265         UPLCOM_DEV(COREGA, CGUSBRS232R),        /* Corega CG-USBRS232R */
 266         UPLCOM_DEV(EPSON, CRESSI_EDY),          /* Cressi Edy diving computer */
 267         UPLCOM_DEV(EPSON, N2ITION3),            /* Zeagle N2iTion3 diving computer */
 268         UPLCOM_DEV(ELECOM, UCSGT),              /* ELECOM UC-SGT Serial Adapter */
 269         UPLCOM_DEV(ELECOM, UCSGT0),             /* ELECOM UC-SGT Serial Adapter */
 270         UPLCOM_DEV(HAL, IMR001),                /* HAL Corporation Crossam2+USB */
 271         UPLCOM_DEV(HP, LD220),                  /* HP LD220 POS Display */
 272         UPLCOM_DEV(IODATA, USBRSAQ),            /* I/O DATA USB-RSAQ */
 273         UPLCOM_DEV(IODATA, USBRSAQ5),           /* I/O DATA USB-RSAQ5 */
 274         UPLCOM_DEV(ITEGNO, WM1080A),            /* iTegno WM1080A GSM/GFPRS modem */
 275         UPLCOM_DEV(ITEGNO, WM2080A),            /* iTegno WM2080A CDMA modem */
 276         UPLCOM_DEV(LEADTEK, 9531),              /* Leadtek 9531 GPS */
 277         UPLCOM_DEV(MICROSOFT, 700WX),           /* Microsoft Palm 700WX */
 278         UPLCOM_DEV(MOBILEACTION, MA620),        /* Mobile Action MA-620 Infrared Adapter */
 279         UPLCOM_DEV(NETINDEX, WS002IN),          /* Willcom W-S002IN */
 280         UPLCOM_DEV(NOKIA2, CA42),               /* Nokia CA-42 cable */
 281         UPLCOM_DEV(OTI, DKU5),                  /* OTI DKU-5 cable */
 282         UPLCOM_DEV(PANASONIC, TYTP50P6S),       /* Panasonic TY-TP50P6-S flat screen */
 283         UPLCOM_DEV(PLX, CA42),                  /* PLX CA-42 clone cable */
 284         UPLCOM_DEV(PROLIFIC, ALLTRONIX_GPRS),   /* Alltronix ACM003U00 modem */
 285         UPLCOM_DEV(PROLIFIC, ALDIGA_AL11U),     /* AlDiga AL-11U modem */
 286         UPLCOM_DEV(PROLIFIC, DCU11),            /* DCU-11 Phone Cable */
 287         UPLCOM_DEV(PROLIFIC, HCR331),           /* HCR331 Card Reader */
 288         UPLCOM_DEV(PROLIFIC, MICROMAX_610U),    /* Micromax 610U modem */
 289         UPLCOM_DEV(PROLIFIC, MOTOROLA),         /* Motorola cable */
 290         UPLCOM_DEV(PROLIFIC, PHAROS),           /* Prolific Pharos */
 291         UPLCOM_DEV(PROLIFIC, PL2303),           /* Generic adapter */
 292         UPLCOM_DEV(PROLIFIC, RSAQ2),            /* I/O DATA USB-RSAQ2 */
 293         UPLCOM_DEV(PROLIFIC, RSAQ3),            /* I/O DATA USB-RSAQ3 */
 294         UPLCOM_DEV(PROLIFIC, UIC_MSR206),       /* UIC MSR206 Card Reader */
 295         UPLCOM_DEV(PROLIFIC2, PL2303),          /* Prolific adapter */
 296         UPLCOM_DEV(RADIOSHACK, USBCABLE),       /* Radio Shack USB Adapter */
 297         UPLCOM_DEV(RATOC, REXUSB60),            /* RATOC REX-USB60 */
 298         UPLCOM_DEV(SAGEM, USBSERIAL),           /* Sagem USB-Serial Controller */
 299         UPLCOM_DEV(SAMSUNG, I330),              /* Samsung I330 phone cradle */
 300         UPLCOM_DEV(SANWA, KB_USB2),             /* Sanwa KB-USB2 Multimeter cable */
 301         UPLCOM_DEV(SIEMENS3, EF81),             /* Siemens EF81 */
 302         UPLCOM_DEV(SIEMENS3, SX1),              /* Siemens SX1 */
 303         UPLCOM_DEV(SIEMENS3, X65),              /* Siemens X65 */
 304         UPLCOM_DEV(SIEMENS3, X75),              /* Siemens X75 */
 305         UPLCOM_DEV(SITECOM, SERIAL),            /* Sitecom USB to Serial */
 306         UPLCOM_DEV(SMART, PL2303),              /* SMART Technologies USB to Serial */
 307         UPLCOM_DEV(SONY, QN3),                  /* Sony QN3 phone cable */
 308         UPLCOM_DEV(SONYERICSSON, DATAPILOT),    /* Sony Ericsson Datapilot */
 309         UPLCOM_DEV(SONYERICSSON, DCU10),        /* Sony Ericsson DCU-10 Cable */
 310         UPLCOM_DEV(SOURCENEXT, KEIKAI8),        /* SOURCENEXT KeikaiDenwa 8 */
 311         UPLCOM_DEV(SOURCENEXT, KEIKAI8_CHG),    /* SOURCENEXT KeikaiDenwa 8 with charger */
 312         UPLCOM_DEV(SPEEDDRAGON, MS3303H),       /* Speed Dragon USB-Serial */
 313         UPLCOM_DEV(SYNTECH, CPT8001C),          /* Syntech CPT-8001C Barcode scanner */
 314         UPLCOM_DEV(TDK, UHA6400),               /* TDK USB-PHS Adapter UHA6400 */
 315         UPLCOM_DEV(TDK, UPA9664),               /* TDK USB-PHS Adapter UPA9664 */
 316         UPLCOM_DEV(TRIPPLITE, U209),            /* Tripp-Lite U209-000-R USB to Serial */
 317         UPLCOM_DEV(YCCABLE, PL2303),            /* YC Cable USB-Serial */
 318 };
 319 #undef UPLCOM_DEV
 320
 321 static device_method_t uplcom_methods[] = {
 322         DEVMETHOD(device_probe, uplcom_probe),
 323         DEVMETHOD(device_attach, uplcom_attach),
 324         DEVMETHOD(device_detach, uplcom_detach),
 325         DEVMETHOD_END
 326 };
 327
 328 static devclass_t uplcom_devclass;
 329
 330 static driver_t uplcom_driver = {
 331         .name = "uplcom",
 332         .methods = uplcom_methods,
 333         .size = sizeof(struct uplcom_softc),
 334 };
 335
 336 DRIVER_MODULE(uplcom, uhub, uplcom_driver, uplcom_devclass, NULL, 0);
 337 MODULE_DEPEND(uplcom, ucom, 1, 1, 1);
 338 MODULE_DEPEND(uplcom, usb, 1, 1, 1);
 339 MODULE_VERSION(uplcom, UPLCOM_MODVER);
 340 USB_PNP_HOST_INFO(uplcom_devs);
 341
 342 static int
 343 uplcom_probe(device_t dev)
 344 {
 345         struct usb_attach_arg *uaa = device_get_ivars(dev);
 346
 347         DPRINTFN(11, "\n");
 348
 349         if (uaa->usb_mode != USB_MODE_HOST) {
 350                 return (ENXIO);
 351         }
 352         if (uaa->info.bConfigIndex != UPLCOM_CONFIG_INDEX) {
 353                 return (ENXIO);
 354         }
 355         if (uaa->info.bIfaceIndex != UPLCOM_IFACE_INDEX) {
 356                 return (ENXIO);
 357         }
 358         return (usbd_lookup_id_by_uaa(uplcom_devs, sizeof(uplcom_devs), uaa));
 359 }
 360
 361 static int
 362 uplcom_attach(device_t dev)
 363 {
 364         struct usb_attach_arg *uaa = device_get_ivars(dev);
 365         struct uplcom_softc *sc = device_get_softc(dev);
 366         struct usb_interface *iface;
 367         struct usb_interface_descriptor *id;
 368         struct usb_device_descriptor *dd;
 369         int error;
 370
 371         DPRINTFN(11, "\n");
 372
 373         device_set_usb_desc(dev);
 374         mtx_init(&sc->sc_mtx, "uplcom", NULL, MTX_DEF);
 375         ucom_ref(&sc->sc_super_ucom);
 376
 377         DPRINTF("sc = %p\n", sc);
 378
 379         sc->sc_udev = uaa->device;
 380
 381         dd = usbd_get_device_descriptor(sc->sc_udev);
 382
 383         switch (UGETW(dd->bcdDevice)) {
 384         case 0x0300:
 385                 sc->sc_chiptype = TYPE_PL2303HX;
 386                 /* or TA, that is HX with external crystal */
 387                 break;
 388         case 0x0400:
 389                 sc->sc_chiptype = TYPE_PL2303HXD;
 390                 /* or EA, that is HXD with ESD protection */
 391                 /* or RA, that has internal voltage level converter that works only up to 1Mbaud (!) */
 392                 break;
 393         case 0x0500:
 394                 sc->sc_chiptype = TYPE_PL2303HXD;
 395                 /* in fact it's TB, that is HXD with external crystal */
 396                 break;
 397         default:
 398                 /* NOTE: I have no info about the bcdDevice for the base PL2303 (up to 1.2Mbaud,
 399                    only fixed rates) and for PL2303SA (8-pin chip, up to 115200 baud */
 400                 /* Determine the chip type.  This algorithm is taken from Linux. */
 401                 if (dd->bDeviceClass == 0x02)
 402                         sc->sc_chiptype = TYPE_PL2303;
 403                 else if (dd->bMaxPacketSize == 0x40)
 404                         sc->sc_chiptype = TYPE_PL2303HX;
 405                 else
 406                         sc->sc_chiptype = TYPE_PL2303;
 407                 break;
 408         }
 409
 410         switch (sc->sc_chiptype) {
 411         case TYPE_PL2303:
 412                 DPRINTF("chiptype: 2303\n");
 413                 break;
 414         case TYPE_PL2303HX:
 415                 DPRINTF("chiptype: 2303HX/TA\n");
 416                 break;
 417         case TYPE_PL2303HXD:
 418                 DPRINTF("chiptype: 2303HXD/TB/RA/EA\n");
 419                 break;
 420         default:
 421                 DPRINTF("chiptype: unknown %d\n", sc->sc_chiptype);
 422                 break;
 423         }
 424
 425         /*
 426          * USB-RSAQ1 has two interface
 427          *
 428          *  USB-RSAQ1       | USB-RSAQ2
 429          * -----------------+-----------------
 430          * Interface 0      |Interface 0
 431          *  Interrupt(0x81) | Interrupt(0x81)
 432          * -----------------+ BulkIN(0x02)
 433          * Interface 1      | BulkOUT(0x83)
 434          *   BulkIN(0x02)   |
 435          *   BulkOUT(0x83)  |
 436          */
 437
 438         sc->sc_ctrl_iface_no = uaa->info.bIfaceNum;
 439         sc->sc_iface_index[1] = UPLCOM_IFACE_INDEX;
 440
 441         iface = usbd_get_iface(uaa->device, UPLCOM_SECOND_IFACE_INDEX);
 442         if (iface) {
 443                 id = usbd_get_interface_descriptor(iface);
 444                 if (id == NULL) {
 445                         device_printf(dev, "no interface descriptor (2)\n");
 446                         goto detach;
 447                 }
 448                 sc->sc_data_iface_no = id->bInterfaceNumber;
 449                 sc->sc_iface_index[0] = UPLCOM_SECOND_IFACE_INDEX;
 450                 usbd_set_parent_iface(uaa->device,
 451                     UPLCOM_SECOND_IFACE_INDEX, uaa->info.bIfaceIndex);
 452         } else {
 453                 sc->sc_data_iface_no = sc->sc_ctrl_iface_no;
 454                 sc->sc_iface_index[0] = UPLCOM_IFACE_INDEX;
 455         }
 456
 457         error = usbd_transfer_setup(uaa->device,
 458             sc->sc_iface_index, sc->sc_xfer, uplcom_config_data,
 459             UPLCOM_N_TRANSFER, sc, &sc->sc_mtx);
 460         if (error) {
 461                 DPRINTF("one or more missing USB endpoints, "
 462                     "error=%s\n", usbd_errstr(error));
 463                 goto detach;
 464         }
 465         error = uplcom_reset(sc, uaa->device);
 466         if (error) {
 467                 device_printf(dev, "reset failed, error=%s\n",
 468                     usbd_errstr(error));
 469                 goto detach;
 470         }
 471
 472         if (sc->sc_chiptype == TYPE_PL2303) {
 473                 /* HX variants seem to lock up after a clear stall request. */
 474                 mtx_lock(&sc->sc_mtx);
 475                 usbd_xfer_set_stall(sc->sc_xfer[UPLCOM_BULK_DT_WR]);
 476                 usbd_xfer_set_stall(sc->sc_xfer[UPLCOM_BULK_DT_RD]);
 477                 mtx_unlock(&sc->sc_mtx);
 478         } else {
 479                 /* reset upstream data pipes */
 480                 if (uplcom_pl2303_do(sc->sc_udev, UT_WRITE_VENDOR_DEVICE,
 481                     UPLCOM_SET_REQUEST, 8, 0, 0) ||
 482                     uplcom_pl2303_do(sc->sc_udev, UT_WRITE_VENDOR_DEVICE,
 483                     UPLCOM_SET_REQUEST, 9, 0, 0)) {
 484                         goto detach;
 485                 }
 486         }
 487
 488         error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
 489             &uplcom_callback, &sc->sc_mtx);
 490         if (error) {
 491                 goto detach;
 492         }
 493         /*
 494          * do the initialization during attach so that the system does not
 495          * sleep during open:
 496          */
 497         if (uplcom_pl2303_init(uaa->device, sc->sc_chiptype)) {
 498                 device_printf(dev, "init failed\n");
 499                 goto detach;
 500         }
 501         ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
 502
 503         return (0);
 504
 505 detach:
 506         uplcom_detach(dev);
 507         return (ENXIO);
 508 }
 509
 510 static int
 511 uplcom_detach(device_t dev)
 512 {
 513         struct uplcom_softc *sc = device_get_softc(dev);
 514
 515         DPRINTF("sc=%p\n", sc);
 516
 517         ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
 518         usbd_transfer_unsetup(sc->sc_xfer, UPLCOM_N_TRANSFER);
 519
 520         device_claim_softc(dev);
 521
 522         uplcom_free_softc(sc);
 523
 524         return (0);
 525 }
 526
 527 UCOM_UNLOAD_DRAIN(uplcom);
 528
 529 static void
 530 uplcom_free_softc(struct uplcom_softc *sc)
 531 {
 532         if (ucom_unref(&sc->sc_super_ucom)) {
 533                 mtx_destroy(&sc->sc_mtx);
 534                 device_free_softc(sc);
 535         }
 536 }
 537
 538 static void
 539 uplcom_free(struct ucom_softc *ucom)
 540 {
 541         uplcom_free_softc(ucom->sc_parent);
 542 }
 543
 544 static usb_error_t
 545 uplcom_reset(struct uplcom_softc *sc, struct usb_device *udev)
 546 {
 547         struct usb_device_request req;
 548
 549         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 550         req.bRequest = UPLCOM_SET_REQUEST;
 551         USETW(req.wValue, 0);
 552         req.wIndex[0] = sc->sc_data_iface_no;
 553         req.wIndex[1] = 0;
 554         USETW(req.wLength, 0);
 555
 556         return (usbd_do_request(udev, NULL, &req, NULL));
 557 }
 558
 559 static usb_error_t
 560 uplcom_pl2303_do(struct usb_device *udev, uint8_t req_type, uint8_t request,
 561     uint16_t value, uint16_t index, uint16_t length)
 562 {
 563         struct usb_device_request req;
 564         usb_error_t err;
 565         uint8_t buf[4];
 566
 567         req.bmRequestType = req_type;
 568         req.bRequest = request;
 569         USETW(req.wValue, value);
 570         USETW(req.wIndex, index);
 571         USETW(req.wLength, length);
 572
 573         err = usbd_do_request(udev, NULL, &req, buf);
 574         if (err) {
 575                 DPRINTF("error=%s\n", usbd_errstr(err));
 576                 return (1);
 577         }
 578         return (0);
 579 }
 580
 581 static int
 582 uplcom_pl2303_init(struct usb_device *udev, uint8_t chiptype)
 583 {
 584         int err;
 585
 586         if (uplcom_pl2303_do(udev, UT_READ_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x8484, 0, 1)
 587             || uplcom_pl2303_do(udev, UT_WRITE_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x0404, 0, 0)
 588             || uplcom_pl2303_do(udev, UT_READ_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x8484, 0, 1)
 589             || uplcom_pl2303_do(udev, UT_READ_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x8383, 0, 1)
 590             || uplcom_pl2303_do(udev, UT_READ_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x8484, 0, 1)
 591             || uplcom_pl2303_do(udev, UT_WRITE_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x0404, 1, 0)
 592             || uplcom_pl2303_do(udev, UT_READ_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x8484, 0, 1)
 593             || uplcom_pl2303_do(udev, UT_READ_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x8383, 0, 1)
 594             || uplcom_pl2303_do(udev, UT_WRITE_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0, 1, 0)
 595             || uplcom_pl2303_do(udev, UT_WRITE_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 1, 0, 0))
 596                 return (EIO);
 597
 598         if (chiptype != TYPE_PL2303)
 599                 err = uplcom_pl2303_do(udev, UT_WRITE_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 2, 0x44, 0);
 600         else
 601                 err = uplcom_pl2303_do(udev, UT_WRITE_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 2, 0x24, 0);
 602         if (err)
 603                 return (EIO);
 604
 605         return (0);
 606 }
 607
 608 static void
 609 uplcom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
 610 {
 611         struct uplcom_softc *sc = ucom->sc_parent;
 612         struct usb_device_request req;
 613
 614         DPRINTF("onoff = %d\n", onoff);
 615
 616         if (onoff)
 617                 sc->sc_line |= UCDC_LINE_DTR;
 618         else
 619                 sc->sc_line &= ~UCDC_LINE_DTR;
 620
 621         req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
 622         req.bRequest = UCDC_SET_CONTROL_LINE_STATE;
 623         USETW(req.wValue, sc->sc_line);
 624         req.wIndex[0] = sc->sc_data_iface_no;
 625         req.wIndex[1] = 0;
 626         USETW(req.wLength, 0);
 627
 628         ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 629             &req, NULL, 0, 1000);
 630 }
 631
 632 static void
 633 uplcom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
 634 {
 635         struct uplcom_softc *sc = ucom->sc_parent;
 636         struct usb_device_request req;
 637
 638         DPRINTF("onoff = %d\n", onoff);
 639
 640         if (onoff)
 641                 sc->sc_line |= UCDC_LINE_RTS;
 642         else
 643                 sc->sc_line &= ~UCDC_LINE_RTS;
 644
 645         req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
 646         req.bRequest = UCDC_SET_CONTROL_LINE_STATE;
 647         USETW(req.wValue, sc->sc_line);
 648         req.wIndex[0] = sc->sc_data_iface_no;
 649         req.wIndex[1] = 0;
 650         USETW(req.wLength, 0);
 651
 652         ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 653             &req, NULL, 0, 1000);
 654 }
 655
 656 static void
 657 uplcom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
 658 {
 659         struct uplcom_softc *sc = ucom->sc_parent;
 660         struct usb_device_request req;
 661         uint16_t temp;
 662
 663         DPRINTF("onoff = %d\n", onoff);
 664
 665         temp = (onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF);
 666
 667         req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
 668         req.bRequest = UCDC_SEND_BREAK;
 669         USETW(req.wValue, temp);
 670         req.wIndex[0] = sc->sc_data_iface_no;
 671         req.wIndex[1] = 0;
 672         USETW(req.wLength, 0);
 673
 674         ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 675             &req, NULL, 0, 1000);
 676 }
 677
 678 /*
 679  * NOTE: These baud rates are officially supported, they can be written
 680  * directly into dwDTERate register.
 681  *
 682  * Free baudrate setting is not supported by the base PL2303, and on
 683  * other models it requires writing a divisor value to dwDTERate instead
 684  * of the raw baudrate. The formula for divisor calculation is not published
 685  * by the vendor, so it is speculative, though the official product homepage
 686  * refers to the Linux module source as a reference implementation.
 687  */
 688 static const uint32_t uplcom_rates[] = {
 689         /*
 690          * Basic 'standard' speed rates, supported by all models
 691          * NOTE: 900 and 56000 actually works as well
 692          */
 693         75, 150, 300, 600, 900, 1200, 1800, 2400, 3600, 4800, 7200, 9600, 14400,
 694         19200, 28800, 38400, 56000, 57600, 115200,
 695         /*
 696          * Advanced speed rates up to 6Mbs, supported by HX/TA and HXD/TB/EA/RA
 697      * NOTE: regardless of the spec, 256000 does not work
 698          */
 699         128000, 134400, 161280, 201600, 230400, 268800, 403200, 460800, 614400,
 700         806400, 921600, 1228800, 2457600, 3000000, 6000000,
 701         /*
 702          * Advanced speed rates up to 12, supported by HXD/TB/EA/RA
 703          */
 704         12000000
 705 };
 706
 707 #define N_UPLCOM_RATES  nitems(uplcom_rates)
 708
 709 static int
 710 uplcom_baud_supported(unsigned int speed)
 711 {
 712         int i;
 713         for (i = 0; i < N_UPLCOM_RATES; i++) {
 714                 if (uplcom_rates[i] == speed)
 715                         return 1;
 716         }
 717         return 0;
 718 }
 719
 720 static int
 721 uplcom_pre_param(struct ucom_softc *ucom, struct termios *t)
 722 {
 723         struct uplcom_softc *sc = ucom->sc_parent;
 724
 725         DPRINTF("\n");
 726
 727         /**
 728          * Check requested baud rate.
 729          *
 730          * The PL2303 can only set specific baud rates, up to 1228800 baud.
 731          * The PL2303HX can set any baud rate up to 6Mb.
 732          * The PL2303HX rev. D can set any baud rate up to 12Mb.
 733          *
 734          */
 735
 736         /* accept raw divisor data, if someone wants to do the math in user domain */
 737         if (t->c_ospeed & 0x80000000)
 738                 return 0;
 739         switch (sc->sc_chiptype) {
 740                 case TYPE_PL2303HXD:
 741                         if (t->c_ospeed <= 12000000)
 742                                 return (0);
 743                         break;
 744                 case TYPE_PL2303HX:
 745                         if (t->c_ospeed <= 6000000)
 746                                 return (0);
 747                         break;
 748                 default:
 749                         if (uplcom_baud_supported(t->c_ospeed))
 750                                 return (0);
 751                         break;
 752         }
 753
 754         DPRINTF("uplcom_param: bad baud rate (%d)\n", t->c_ospeed);
 755         return (EIO);
 756 }
 757
 758 static unsigned int
 759 uplcom_encode_baud_rate_divisor(uint8_t *buf, unsigned int baud)
 760 {
 761         unsigned int baseline, mantissa, exponent;
 762
 763         /* Determine the baud rate divisor. This algorithm is taken from Linux. */
 764         /*
 765          * Apparently the formula is:
 766          *   baudrate = baseline / (mantissa * 4^exponent)
 767          * where
 768          *   mantissa = buf[8:0]
 769          *   exponent = buf[11:9]
 770          */
 771         if (baud == 0)
 772                 baud = 1;
 773         baseline = 383385600;
 774         mantissa = baseline / baud;
 775         if (mantissa == 0)
 776                 mantissa = 1;
 777         exponent = 0;
 778         while (mantissa >= 512) {
 779                 if (exponent < 7) {
 780                         mantissa >>= 2; /* divide by 4 */
 781                         exponent++;
 782                 } else {
 783                         /* Exponent is maxed. Trim mantissa and leave. This gives approx. 45.8 baud */
 784                         mantissa = 511;
 785                         break;
 786                 }
 787         }
 788
 789         buf[3] = 0x80;
 790         buf[2] = 0;
 791         buf[1] = exponent << 1 | mantissa >> 8;
 792         buf[0] = mantissa & 0xff;
 793
 794         /* Calculate and return the exact baud rate. */
 795         baud = (baseline / mantissa) >> (exponent << 1);
 796         DPRINTF("real baud rate will be %u\n", baud);
 797
 798         return baud;
 799 }
 800 static void
 801 uplcom_cfg_param(struct ucom_softc *ucom, struct termios *t)
 802 {
 803         struct uplcom_softc *sc = ucom->sc_parent;
 804         struct usb_cdc_line_state ls;
 805         struct usb_device_request req;
 806
 807         DPRINTF("sc = %p\n", sc);
 808
 809         memset(&ls, 0, sizeof(ls));
 810
 811         /*
 812          * NOTE: If unsupported baud rates are set directly, the PL2303* uses 9600 baud.
 813          */
 814         if ((t->c_ospeed & 0x80000000) || uplcom_baud_supported(t->c_ospeed))
 815                 USETDW(ls.dwDTERate, t->c_ospeed);
 816         else
 817                 t->c_ospeed = uplcom_encode_baud_rate_divisor((uint8_t*)&ls.dwDTERate, t->c_ospeed);
 818
 819         if (t->c_cflag & CSTOPB) {
 820                 if ((t->c_cflag & CSIZE) == CS5) {
 821                         /*
 822                          * NOTE: Comply with "real" UARTs / RS232:
 823                          *       use 1.5 instead of 2 stop bits with 5 data bits
 824                          */
 825                         ls.bCharFormat = UCDC_STOP_BIT_1_5;
 826                 } else {
 827                         ls.bCharFormat = UCDC_STOP_BIT_2;
 828                 }
 829         } else {
 830                 ls.bCharFormat = UCDC_STOP_BIT_1;
 831         }
 832
 833         if (t->c_cflag & PARENB) {
 834                 if (t->c_cflag & PARODD) {
 835                         ls.bParityType = UCDC_PARITY_ODD;
 836                 } else {
 837                         ls.bParityType = UCDC_PARITY_EVEN;
 838                 }
 839         } else {
 840                 ls.bParityType = UCDC_PARITY_NONE;
 841         }
 842
 843         switch (t->c_cflag & CSIZE) {
 844         case CS5:
 845                 ls.bDataBits = 5;
 846                 break;
 847         case CS6:
 848                 ls.bDataBits = 6;
 849                 break;
 850         case CS7:
 851                 ls.bDataBits = 7;
 852                 break;
 853         case CS8:
 854                 ls.bDataBits = 8;
 855                 break;
 856         }
 857
 858         DPRINTF("rate=0x%08x fmt=%d parity=%d bits=%d\n",
 859             UGETDW(ls.dwDTERate), ls.bCharFormat,
 860             ls.bParityType, ls.bDataBits);
 861
 862         req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
 863         req.bRequest = UCDC_SET_LINE_CODING;
 864         USETW(req.wValue, 0);
 865         req.wIndex[0] = sc->sc_data_iface_no;
 866         req.wIndex[1] = 0;
 867         USETW(req.wLength, UCDC_LINE_STATE_LENGTH);
 868
 869         ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 870             &req, &ls, 0, 1000);
 871
 872         if (t->c_cflag & CRTSCTS) {
 873
 874                 DPRINTF("crtscts = on\n");
 875
 876                 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 877                 req.bRequest = UPLCOM_SET_REQUEST;
 878                 USETW(req.wValue, 0);
 879                 if (sc->sc_chiptype != TYPE_PL2303)
 880                         USETW(req.wIndex, UPLCOM_SET_CRTSCTS_PL2303X);
 881                 else
 882                         USETW(req.wIndex, UPLCOM_SET_CRTSCTS);
 883                 USETW(req.wLength, 0);
 884
 885                 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 886                     &req, NULL, 0, 1000);
 887         } else {
 888                 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 889                 req.bRequest = UPLCOM_SET_REQUEST;
 890                 USETW(req.wValue, 0);
 891                 USETW(req.wIndex, 0);
 892                 USETW(req.wLength, 0);
 893                 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
 894                     &req, NULL, 0, 1000);
 895         }
 896 }
 897
 898 static void
 899 uplcom_start_read(struct ucom_softc *ucom)
 900 {
 901         struct uplcom_softc *sc = ucom->sc_parent;
 902
 903         /* start interrupt endpoint */
 904         usbd_transfer_start(sc->sc_xfer[UPLCOM_INTR_DT_RD]);
 905
 906         /* start read endpoint */
 907         usbd_transfer_start(sc->sc_xfer[UPLCOM_BULK_DT_RD]);
 908 }
 909
 910 static void
 911 uplcom_stop_read(struct ucom_softc *ucom)
 912 {
 913         struct uplcom_softc *sc = ucom->sc_parent;
 914
 915         /* stop interrupt endpoint */
 916         usbd_transfer_stop(sc->sc_xfer[UPLCOM_INTR_DT_RD]);
 917
 918         /* stop read endpoint */
 919         usbd_transfer_stop(sc->sc_xfer[UPLCOM_BULK_DT_RD]);
 920 }
 921
 922 static void
 923 uplcom_start_write(struct ucom_softc *ucom)
 924 {
 925         struct uplcom_softc *sc = ucom->sc_parent;
 926
 927         usbd_transfer_start(sc->sc_xfer[UPLCOM_BULK_DT_WR]);
 928 }
 929
 930 static void
 931 uplcom_stop_write(struct ucom_softc *ucom)
 932 {
 933         struct uplcom_softc *sc = ucom->sc_parent;
 934
 935         usbd_transfer_stop(sc->sc_xfer[UPLCOM_BULK_DT_WR]);
 936 }
 937
 938 static void
 939 uplcom_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
 940 {
 941         struct uplcom_softc *sc = ucom->sc_parent;
 942
 943         DPRINTF("\n");
 944
 945         *lsr = sc->sc_lsr;
 946         *msr = sc->sc_msr;
 947 }
 948
 949 static void
 950 uplcom_intr_callback(struct usb_xfer *xfer, usb_error_t error)
 951 {
 952         struct uplcom_softc *sc = usbd_xfer_softc(xfer);
 953         struct usb_page_cache *pc;
 954         uint8_t buf[9];
 955         int actlen;
 956
 957         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
 958
 959         switch (USB_GET_STATE(xfer)) {
 960         case USB_ST_TRANSFERRED:
 961
 962                 DPRINTF("actlen = %u\n", actlen);
 963
 964                 if (actlen >= 9) {
 965
 966                         pc = usbd_xfer_get_frame(xfer, 0);
 967                         usbd_copy_out(pc, 0, buf, sizeof(buf));
 968
 969                         DPRINTF("status = 0x%02x\n", buf[UPLCOM_STATE_INDEX]);
 970
 971                         sc->sc_lsr = 0;
 972                         sc->sc_msr = 0;
 973
 974                         if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_CTS) {
 975                                 sc->sc_msr |= SER_CTS;
 976                         }
 977                         if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_OVERRUN_ERROR) {
 978                                 sc->sc_lsr |= ULSR_OE;
 979                         }
 980                         if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_PARITY_ERROR) {
 981                                 sc->sc_lsr |= ULSR_PE;
 982                         }
 983                         if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_FRAME_ERROR) {
 984                                 sc->sc_lsr |= ULSR_FE;
 985                         }
 986                         if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_RING) {
 987                                 sc->sc_msr |= SER_RI;
 988                         }
 989                         if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_BREAK_ERROR) {
 990                                 sc->sc_lsr |= ULSR_BI;
 991                         }
 992                         if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_DSR) {
 993                                 sc->sc_msr |= SER_DSR;
 994                         }
 995                         if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_DCD) {
 996                                 sc->sc_msr |= SER_DCD;
 997                         }
 998                         ucom_status_change(&sc->sc_ucom);
 999                 }
1000         case USB_ST_SETUP:
1001 tr_setup:
1002                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
1003                 usbd_transfer_submit(xfer);
1004                 return;
1005
1006         default:                        /* Error */
1007                 if (error != USB_ERR_CANCELLED) {
1008                         /* try to clear stall first */
1009                         usbd_xfer_set_stall(xfer);
1010                         goto tr_setup;
1011                 }
1012                 return;
1013         }
1014 }
1015
1016 static void
1017 uplcom_write_callback(struct usb_xfer *xfer, usb_error_t error)
1018 {
1019         struct uplcom_softc *sc = usbd_xfer_softc(xfer);
1020         struct usb_page_cache *pc;
1021         uint32_t actlen;
1022
1023         switch (USB_GET_STATE(xfer)) {
1024         case USB_ST_SETUP:
1025         case USB_ST_TRANSFERRED:
1026 tr_setup:
1027                 pc = usbd_xfer_get_frame(xfer, 0);
1028                 if (ucom_get_data(&sc->sc_ucom, pc, 0,
1029                     UPLCOM_BULK_BUF_SIZE, &actlen)) {
1030
1031                         DPRINTF("actlen = %d\n", actlen);
1032
1033                         usbd_xfer_set_frame_len(xfer, 0, actlen);
1034                         usbd_transfer_submit(xfer);
1035                 }
1036                 return;
1037
1038         default:                        /* Error */
1039                 if (error != USB_ERR_CANCELLED) {
1040                         /* try to clear stall first */
1041                         usbd_xfer_set_stall(xfer);
1042                         goto tr_setup;
1043                 }
1044                 return;
1045         }
1046 }
1047
1048 static void
1049 uplcom_read_callback(struct usb_xfer *xfer, usb_error_t error)
1050 {
1051         struct uplcom_softc *sc = usbd_xfer_softc(xfer);
1052         struct usb_page_cache *pc;
1053         int actlen;
1054
1055         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1056
1057         switch (USB_GET_STATE(xfer)) {
1058         case USB_ST_TRANSFERRED:
1059                 pc = usbd_xfer_get_frame(xfer, 0);
1060                 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
1061
1062         case USB_ST_SETUP:
1063 tr_setup:
1064                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
1065                 usbd_transfer_submit(xfer);
1066                 return;
1067
1068         default:                        /* Error */
1069                 if (error != USB_ERR_CANCELLED) {
1070                         /* try to clear stall first */
1071                         usbd_xfer_set_stall(xfer);
1072                         goto tr_setup;
1073                 }
1074                 return;
1075         }
1076 }
1077
1078 static void
1079 uplcom_poll(struct ucom_softc *ucom)
1080 {
1081         struct uplcom_softc *sc = ucom->sc_parent;
1082         usbd_transfer_poll(sc->sc_xfer, UPLCOM_N_TRANSFER);
1083 }