sys/dev/usb/net/uhso.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2010 Fredrik Lindberg <fli@shapeshifter.se>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  *
  27  */
  28 #include <sys/cdefs.h>
  29 __FBSDID("$FreeBSD$");
  30
  31 #include <sys/param.h>
  32 #include <sys/types.h>
  33 #include <sys/sockio.h>
  34 #include <sys/mbuf.h>
  35 #include <sys/malloc.h>
  36 #include <sys/kernel.h>
  37 #include <sys/module.h>
  38 #include <sys/socket.h>
  39 #include <sys/tty.h>
  40 #include <sys/sysctl.h>
  41 #include <sys/condvar.h>
  42 #include <sys/sx.h>
  43 #include <sys/proc.h>
  44 #include <sys/conf.h>
  45 #include <sys/bus.h>
  46 #include <sys/systm.h>
  47 #include <sys/limits.h>
  48
  49 #include <machine/bus.h>
  50
  51 #include <net/if.h>
  52 #include <net/if_var.h>
  53 #include <net/if_types.h>
  54 #include <net/netisr.h>
  55 #include <net/bpf.h>
  56 #include <netinet/in.h>
  57 #include <netinet/ip.h>
  58 #include <netinet/ip6.h>
  59
  60 #include <dev/usb/usb.h>
  61 #include <dev/usb/usbdi.h>
  62 #include <dev/usb/usbdi_util.h>
  63 #include <dev/usb/usb_cdc.h>
  64 #include "usbdevs.h"
  65 #define USB_DEBUG_VAR uhso_debug
  66 #include <dev/usb/usb_debug.h>
  67 #include <dev/usb/usb_process.h>
  68 #include <dev/usb/usb_busdma.h>
  69 #include <dev/usb/usb_msctest.h>
  70
  71 #include <dev/usb/serial/usb_serial.h>
  72
  73 struct uhso_tty {
  74         struct uhso_softc *ht_sc;
  75         struct usb_xfer *ht_xfer[3];
  76         int             ht_muxport; /* Mux. port no */
  77         int             ht_open;
  78         char            ht_name[32];
  79 };
  80
  81 struct uhso_softc {
  82         device_t                sc_dev;
  83         struct usb_device       *sc_udev;
  84         struct mtx              sc_mtx;
  85         uint32_t                sc_type;        /* Interface definition */
  86         int                     sc_radio;
  87
  88         struct usb_xfer         *sc_xfer[3];
  89         uint8_t                 sc_iface_no;
  90         uint8_t                 sc_iface_index;
  91
  92         /* Control pipe */
  93         struct usb_xfer *       sc_ctrl_xfer[2];
  94         uint8_t                 sc_ctrl_iface_no;
  95
  96         /* Network */
  97         struct usb_xfer         *sc_if_xfer[2];
  98         struct ifnet            *sc_ifp;
  99         struct mbuf             *sc_mwait;      /* Partial packet */
 100         size_t                  sc_waitlen;     /* No. of outstanding bytes */
 101         struct ifqueue          sc_rxq;
 102         struct callout          sc_c;
 103
 104         /* TTY related structures */
 105         struct ucom_super_softc sc_super_ucom;
 106         int                     sc_ttys;
 107         struct uhso_tty         *sc_tty;
 108         struct ucom_softc       *sc_ucom;
 109         int                     sc_msr;
 110         int                     sc_lsr;
 111         int                     sc_line;
 112 };
 113
 114 #define UHSO_MAX_MTU            2048
 115
 116 /*
 117  * There are mainly two type of cards floating around.
 118  * The first one has 2,3 or 4 interfaces with a multiplexed serial port
 119  * and packet interface on the first interface and bulk serial ports
 120  * on the others.
 121  * The second type of card has several other interfaces, their purpose
 122  * can be detected during run-time.
 123  */
 124 #define UHSO_IFACE_SPEC(usb_type, port, port_type) \
 125         (((usb_type) << 24) | ((port) << 16) | (port_type))
 126
 127 #define UHSO_IFACE_USB_TYPE(x) ((x >> 24) & 0xff)
 128 #define UHSO_IFACE_PORT(x) ((x >> 16) & 0xff)
 129 #define UHSO_IFACE_PORT_TYPE(x) (x & 0xff)
 130
 131 /*
 132  * USB interface types
 133  */
 134 #define UHSO_IF_NET             0x01    /* Network packet interface */
 135 #define UHSO_IF_MUX             0x02    /* Multiplexed serial port */
 136 #define UHSO_IF_BULK            0x04    /* Bulk interface */
 137
 138 /*
 139  * Port types
 140  */
 141 #define UHSO_PORT_UNKNOWN       0x00
 142 #define UHSO_PORT_SERIAL        0x01    /* Serial port */
 143 #define UHSO_PORT_NETWORK       0x02    /* Network packet interface */
 144
 145 /*
 146  * Multiplexed serial port destination sub-port names
 147  */
 148 #define UHSO_MPORT_TYPE_CTL     0x00    /* Control port */
 149 #define UHSO_MPORT_TYPE_APP     0x01    /* Application */
 150 #define UHSO_MPORT_TYPE_PCSC    0x02
 151 #define UHSO_MPORT_TYPE_GPS     0x03
 152 #define UHSO_MPORT_TYPE_APP2    0x04    /* Secondary application */
 153 #define UHSO_MPORT_TYPE_MAX     UHSO_MPORT_TYPE_APP2
 154 #define UHSO_MPORT_TYPE_NOMAX   8       /* Max number of mux ports */
 155
 156 /*
 157  * Port definitions
 158  * Note that these definitions are arbitrary and do not match the values
 159  * returned by the auto config descriptor.
 160  */
 161 #define UHSO_PORT_TYPE_UNKNOWN  0x00
 162 #define UHSO_PORT_TYPE_CTL      0x01
 163 #define UHSO_PORT_TYPE_APP      0x02
 164 #define UHSO_PORT_TYPE_APP2     0x03
 165 #define UHSO_PORT_TYPE_MODEM    0x04
 166 #define UHSO_PORT_TYPE_NETWORK  0x05
 167 #define UHSO_PORT_TYPE_DIAG     0x06
 168 #define UHSO_PORT_TYPE_DIAG2    0x07
 169 #define UHSO_PORT_TYPE_GPS      0x08
 170 #define UHSO_PORT_TYPE_GPSCTL   0x09
 171 #define UHSO_PORT_TYPE_PCSC     0x0a
 172 #define UHSO_PORT_TYPE_MSD      0x0b
 173 #define UHSO_PORT_TYPE_VOICE    0x0c
 174 #define UHSO_PORT_TYPE_MAX      0x0c
 175
 176 static eventhandler_tag uhso_etag;
 177
 178 /* Overall port type */
 179 static char *uhso_port[] = {
 180         "Unknown",
 181         "Serial",
 182         "Network",
 183         "Network/Serial"
 184 };
 185
 186 /*
 187  * Map between interface port type read from device and description type.
 188  * The position in this array is a direct map to the auto config
 189  * descriptor values.
 190  */
 191 static unsigned char uhso_port_map[] = {
 192         UHSO_PORT_TYPE_UNKNOWN,
 193         UHSO_PORT_TYPE_DIAG,
 194         UHSO_PORT_TYPE_GPS,
 195         UHSO_PORT_TYPE_GPSCTL,
 196         UHSO_PORT_TYPE_APP,
 197         UHSO_PORT_TYPE_APP2,
 198         UHSO_PORT_TYPE_CTL,
 199         UHSO_PORT_TYPE_NETWORK,
 200         UHSO_PORT_TYPE_MODEM,
 201         UHSO_PORT_TYPE_MSD,
 202         UHSO_PORT_TYPE_PCSC,
 203         UHSO_PORT_TYPE_VOICE
 204 };
 205 static char uhso_port_map_max = sizeof(uhso_port_map) / sizeof(char);
 206
 207 static unsigned char uhso_mux_port_map[] = {
 208         UHSO_PORT_TYPE_CTL,
 209         UHSO_PORT_TYPE_APP,
 210         UHSO_PORT_TYPE_PCSC,
 211         UHSO_PORT_TYPE_GPS,
 212         UHSO_PORT_TYPE_APP2
 213 };
 214
 215 static char *uhso_port_type[] = {
 216         "Unknown",  /* Not a valid port */
 217         "Control",
 218         "Application",
 219         "Application (Secondary)",
 220         "Modem",
 221         "Network",
 222         "Diagnostic",
 223         "Diagnostic (Secondary)",
 224         "GPS",
 225         "GPS Control",
 226         "PC Smartcard",
 227         "MSD",
 228         "Voice",
 229 };
 230
 231 static char *uhso_port_type_sysctl[] = {
 232         "unknown",
 233         "control",
 234         "application",
 235         "application",
 236         "modem",
 237         "network",
 238         "diagnostic",
 239         "diagnostic",
 240         "gps",
 241         "gps_control",
 242         "pcsc",
 243         "msd",
 244         "voice",
 245 };
 246
 247 #define UHSO_STATIC_IFACE       0x01
 248 #define UHSO_AUTO_IFACE         0x02
 249
 250 /* ifnet device unit allocations */
 251 static struct unrhdr *uhso_ifnet_unit = NULL;
 252
 253 static const STRUCT_USB_HOST_ID uhso_devs[] = {
 254 #define UHSO_DEV(v,p,i) { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i) }
 255         /* Option GlobeTrotter MAX 7.2 with upgraded firmware */
 256         UHSO_DEV(OPTION, GTMAX72, UHSO_STATIC_IFACE),
 257         /* Option GlobeSurfer iCON 7.2 */
 258         UHSO_DEV(OPTION, GSICON72, UHSO_STATIC_IFACE),
 259         /* Option iCON 225 */
 260         UHSO_DEV(OPTION, GTHSDPA, UHSO_STATIC_IFACE),
 261         /* Option GlobeSurfer iCON HSUPA */
 262         UHSO_DEV(OPTION, GSICONHSUPA, UHSO_STATIC_IFACE),
 263         /* Option GlobeTrotter HSUPA */
 264         UHSO_DEV(OPTION, GTHSUPA, UHSO_STATIC_IFACE),
 265         /* GE40x */
 266         UHSO_DEV(OPTION, GE40X, UHSO_AUTO_IFACE),
 267         UHSO_DEV(OPTION, GE40X_1, UHSO_AUTO_IFACE),
 268         UHSO_DEV(OPTION, GE40X_2, UHSO_AUTO_IFACE),
 269         UHSO_DEV(OPTION, GE40X_3, UHSO_AUTO_IFACE),
 270         /* Option GlobeSurfer iCON 401 */
 271         UHSO_DEV(OPTION, ICON401, UHSO_AUTO_IFACE),
 272         /* Option GlobeTrotter Module 382 */
 273         UHSO_DEV(OPTION, GMT382, UHSO_AUTO_IFACE),
 274         /* Option GTM661W */
 275         UHSO_DEV(OPTION, GTM661W, UHSO_AUTO_IFACE),
 276         /* Option iCON EDGE */
 277         UHSO_DEV(OPTION, ICONEDGE, UHSO_STATIC_IFACE),
 278         /* Option Module HSxPA */
 279         UHSO_DEV(OPTION, MODHSXPA, UHSO_STATIC_IFACE),
 280         /* Option iCON 321 */
 281         UHSO_DEV(OPTION, ICON321, UHSO_STATIC_IFACE),
 282         /* Option iCON 322 */
 283         UHSO_DEV(OPTION, GTICON322, UHSO_STATIC_IFACE),
 284         /* Option iCON 505 */
 285         UHSO_DEV(OPTION, ICON505, UHSO_AUTO_IFACE),
 286         /* Option iCON 452 */
 287         UHSO_DEV(OPTION, ICON505, UHSO_AUTO_IFACE),
 288 #undef UHSO_DEV
 289 };
 290
 291 static SYSCTL_NODE(_hw_usb, OID_AUTO, uhso, CTLFLAG_RW, 0, "USB uhso");
 292 static int uhso_autoswitch = 1;
 293 SYSCTL_INT(_hw_usb_uhso, OID_AUTO, auto_switch, CTLFLAG_RWTUN,
 294     &uhso_autoswitch, 0, "Automatically switch to modem mode");
 295
 296 #ifdef USB_DEBUG
 297 #ifdef UHSO_DEBUG
 298 static int uhso_debug = UHSO_DEBUG;
 299 #else
 300 static int uhso_debug = -1;
 301 #endif
 302
 303 SYSCTL_INT(_hw_usb_uhso, OID_AUTO, debug, CTLFLAG_RWTUN,
 304     &uhso_debug, 0, "Debug level");
 305
 306 #define UHSO_DPRINTF(n, x, ...) {\
 307         if (uhso_debug >= n) {\
 308                 printf("%s: " x, __func__, ##__VA_ARGS__);\
 309         }\
 310 }
 311 #else
 312 #define UHSO_DPRINTF(n, x, ...)
 313 #endif
 314
 315 #ifdef UHSO_DEBUG_HEXDUMP
 316 # define UHSO_HEXDUMP(_buf, _len) do { \
 317   { \
 318         size_t __tmp; \
 319         const char *__buf = (const char *)_buf; \
 320         for (__tmp = 0; __tmp < _len; __tmp++) \
 321                 printf("%02hhx ", *__buf++); \
 322     printf("\n"); \
 323   } \
 324 } while(0)
 325 #else
 326 # define UHSO_HEXDUMP(_buf, _len)
 327 #endif
 328
 329 enum {
 330         UHSO_MUX_ENDPT_INTR = 0,
 331         UHSO_MUX_ENDPT_MAX
 332 };
 333
 334 enum {
 335         UHSO_CTRL_READ = 0,
 336         UHSO_CTRL_WRITE,
 337         UHSO_CTRL_MAX
 338 };
 339
 340 enum {
 341         UHSO_IFNET_READ = 0,
 342         UHSO_IFNET_WRITE,
 343         UHSO_IFNET_MAX
 344 };
 345
 346 enum {
 347         UHSO_BULK_ENDPT_READ = 0,
 348         UHSO_BULK_ENDPT_WRITE,
 349         UHSO_BULK_ENDPT_INTR,
 350         UHSO_BULK_ENDPT_MAX
 351 };
 352
 353 static usb_callback_t uhso_mux_intr_callback;
 354 static usb_callback_t uhso_mux_read_callback;
 355 static usb_callback_t uhso_mux_write_callback;
 356 static usb_callback_t uhso_bs_read_callback;
 357 static usb_callback_t uhso_bs_write_callback;
 358 static usb_callback_t uhso_bs_intr_callback;
 359 static usb_callback_t uhso_ifnet_read_callback;
 360 static usb_callback_t uhso_ifnet_write_callback;
 361
 362 /* Config used for the default control pipes */
 363 static const struct usb_config uhso_ctrl_config[UHSO_CTRL_MAX] = {
 364         [UHSO_CTRL_READ] = {
 365                 .type = UE_CONTROL,
 366                 .endpoint = 0x00,
 367                 .direction = UE_DIR_ANY,
 368                 .flags = { .pipe_bof = 1, .short_xfer_ok = 1 },
 369                 .bufsize = sizeof(struct usb_device_request) + 1024,
 370                 .callback = &uhso_mux_read_callback
 371         },
 372
 373         [UHSO_CTRL_WRITE] = {
 374                 .type = UE_CONTROL,
 375                 .endpoint = 0x00,
 376                 .direction = UE_DIR_ANY,
 377                 .flags = { .pipe_bof = 1, .force_short_xfer = 1 },
 378                 .bufsize = sizeof(struct usb_device_request) + 1024,
 379                 .timeout = 1000,
 380                 .callback = &uhso_mux_write_callback
 381         }
 382 };
 383
 384 /* Config for the multiplexed serial ports */
 385 static const struct usb_config uhso_mux_config[UHSO_MUX_ENDPT_MAX] = {
 386         [UHSO_MUX_ENDPT_INTR] = {
 387                 .type = UE_INTERRUPT,
 388                 .endpoint = UE_ADDR_ANY,
 389                 .direction = UE_DIR_IN,
 390                 .flags = { .short_xfer_ok = 1 },
 391                 .bufsize = 0,
 392                 .callback = &uhso_mux_intr_callback,
 393         }
 394 };
 395
 396 /* Config for the raw IP-packet interface */
 397 static const struct usb_config uhso_ifnet_config[UHSO_IFNET_MAX] = {
 398         [UHSO_IFNET_READ] = {
 399                 .type = UE_BULK,
 400                 .endpoint = UE_ADDR_ANY,
 401                 .direction = UE_DIR_IN,
 402                 .flags = { .pipe_bof = 1, .short_xfer_ok = 1 },
 403                 .bufsize = MCLBYTES,
 404                 .callback = &uhso_ifnet_read_callback
 405         },
 406         [UHSO_IFNET_WRITE] = {
 407                 .type = UE_BULK,
 408                 .endpoint = UE_ADDR_ANY,
 409                 .direction = UE_DIR_OUT,
 410                 .flags = { .pipe_bof = 1, .force_short_xfer = 1 },
 411                 .bufsize = MCLBYTES,
 412                 .timeout = 5 * USB_MS_HZ,
 413                 .callback = &uhso_ifnet_write_callback
 414         }
 415 };
 416
 417 /* Config for interfaces with normal bulk serial ports */
 418 static const struct usb_config uhso_bs_config[UHSO_BULK_ENDPT_MAX] = {
 419         [UHSO_BULK_ENDPT_READ] = {
 420                 .type = UE_BULK,
 421                 .endpoint = UE_ADDR_ANY,
 422                 .direction = UE_DIR_IN,
 423                 .flags = { .pipe_bof = 1, .short_xfer_ok = 1 },
 424                 .bufsize = 4096,
 425                 .callback = &uhso_bs_read_callback
 426         },
 427
 428         [UHSO_BULK_ENDPT_WRITE] = {
 429                 .type = UE_BULK,
 430                 .endpoint = UE_ADDR_ANY,
 431                 .direction = UE_DIR_OUT,
 432                 .flags = { .pipe_bof = 1, .force_short_xfer = 1 },
 433                 .bufsize = 8192,
 434                 .callback = &uhso_bs_write_callback
 435         },
 436
 437         [UHSO_BULK_ENDPT_INTR] = {
 438                 .type = UE_INTERRUPT,
 439                 .endpoint = UE_ADDR_ANY,
 440                 .direction = UE_DIR_IN,
 441                 .flags = { .short_xfer_ok = 1 },
 442                 .bufsize = 0,
 443                 .callback = &uhso_bs_intr_callback,
 444         }
 445 };
 446
 447 static int  uhso_probe_iface(struct uhso_softc *, int,
 448     int (*probe)(struct usb_device *, int));
 449 static int  uhso_probe_iface_auto(struct usb_device *, int);
 450 static int  uhso_probe_iface_static(struct usb_device *, int);
 451 static int  uhso_attach_muxserial(struct uhso_softc *, struct usb_interface *,
 452     int type);
 453 static int  uhso_attach_bulkserial(struct uhso_softc *, struct usb_interface *,
 454     int type);
 455 static int  uhso_attach_ifnet(struct uhso_softc *, struct usb_interface *,
 456     int type);
 457 static void uhso_test_autoinst(void *, struct usb_device *,
 458                 struct usb_attach_arg *);
 459 static int  uhso_driver_loaded(struct module *, int, void *);
 460 static int uhso_radio_sysctl(SYSCTL_HANDLER_ARGS);
 461 static int uhso_radio_ctrl(struct uhso_softc *, int);
 462
 463 static void uhso_free(struct ucom_softc *);
 464 static void uhso_ucom_start_read(struct ucom_softc *);
 465 static void uhso_ucom_stop_read(struct ucom_softc *);
 466 static void uhso_ucom_start_write(struct ucom_softc *);
 467 static void uhso_ucom_stop_write(struct ucom_softc *);
 468 static void uhso_ucom_cfg_get_status(struct ucom_softc *, uint8_t *, uint8_t *);
 469 static void uhso_ucom_cfg_set_dtr(struct ucom_softc *, uint8_t);
 470 static void uhso_ucom_cfg_set_rts(struct ucom_softc *, uint8_t);
 471 static void uhso_if_init(void *);
 472 static void uhso_if_start(struct ifnet *);
 473 static void uhso_if_stop(struct uhso_softc *);
 474 static int  uhso_if_ioctl(struct ifnet *, u_long, caddr_t);
 475 static int  uhso_if_output(struct ifnet *, struct mbuf *,
 476     const struct sockaddr *, struct route *);
 477 static void uhso_if_rxflush(void *);
 478
 479 static device_probe_t uhso_probe;
 480 static device_attach_t uhso_attach;
 481 static device_detach_t uhso_detach;
 482 static void uhso_free_softc(struct uhso_softc *);
 483
 484 static device_method_t uhso_methods[] = {
 485         DEVMETHOD(device_probe,         uhso_probe),
 486         DEVMETHOD(device_attach,        uhso_attach),
 487         DEVMETHOD(device_detach,        uhso_detach),
 488         { 0, 0 }
 489 };
 490
 491 static driver_t uhso_driver = {
 492         .name = "uhso",
 493         .methods = uhso_methods,
 494         .size = sizeof(struct uhso_softc)
 495 };
 496
 497 static devclass_t uhso_devclass;
 498 DRIVER_MODULE(uhso, uhub, uhso_driver, uhso_devclass, uhso_driver_loaded, 0);
 499 MODULE_DEPEND(uhso, ucom, 1, 1, 1);
 500 MODULE_DEPEND(uhso, usb, 1, 1, 1);
 501 MODULE_VERSION(uhso, 1);
 502 USB_PNP_HOST_INFO(uhso_devs);
 503
 504 static struct ucom_callback uhso_ucom_callback = {
 505         .ucom_cfg_get_status = &uhso_ucom_cfg_get_status,
 506         .ucom_cfg_set_dtr = &uhso_ucom_cfg_set_dtr,
 507         .ucom_cfg_set_rts = &uhso_ucom_cfg_set_rts,
 508         .ucom_start_read = uhso_ucom_start_read,
 509         .ucom_stop_read = uhso_ucom_stop_read,
 510         .ucom_start_write = uhso_ucom_start_write,
 511         .ucom_stop_write = uhso_ucom_stop_write,
 512         .ucom_free = &uhso_free,
 513 };
 514
 515 static int
 516 uhso_probe(device_t self)
 517 {
 518         struct usb_attach_arg *uaa = device_get_ivars(self);
 519         int error;
 520
 521         if (uaa->usb_mode != USB_MODE_HOST)
 522                 return (ENXIO);
 523         if (uaa->info.bConfigIndex != 0)
 524                 return (ENXIO);
 525         if (uaa->info.bDeviceClass != 0xff)
 526                 return (ENXIO);
 527
 528         error = usbd_lookup_id_by_uaa(uhso_devs, sizeof(uhso_devs), uaa);
 529         if (error != 0)
 530                 return (error);
 531
 532         /*
 533          * Probe device to see if we are able to attach
 534          * to this interface or not.
 535          */
 536         if (USB_GET_DRIVER_INFO(uaa) == UHSO_AUTO_IFACE) {
 537                 if (uhso_probe_iface_auto(uaa->device,
 538                     uaa->info.bIfaceNum) == 0)
 539                         return (ENXIO);
 540         }
 541         return (error);
 542 }
 543
 544 static int
 545 uhso_attach(device_t self)
 546 {
 547         struct uhso_softc *sc = device_get_softc(self);
 548         struct usb_attach_arg *uaa = device_get_ivars(self);
 549         struct usb_interface_descriptor *id;
 550         struct sysctl_ctx_list *sctx;
 551         struct sysctl_oid *soid;
 552         struct sysctl_oid *tree = NULL, *tty_node;
 553         struct ucom_softc *ucom;
 554         struct uhso_tty *ht;
 555         int i, error, port;
 556         void *probe_f;
 557         usb_error_t uerr;
 558         char *desc;
 559
 560         sc->sc_dev = self;
 561         sc->sc_udev = uaa->device;
 562         mtx_init(&sc->sc_mtx, "uhso", NULL, MTX_DEF);
 563         ucom_ref(&sc->sc_super_ucom);
 564
 565         sc->sc_radio = 1;
 566
 567         id = usbd_get_interface_descriptor(uaa->iface);
 568         sc->sc_ctrl_iface_no = id->bInterfaceNumber;
 569
 570         sc->sc_iface_no = uaa->info.bIfaceNum;
 571         sc->sc_iface_index = uaa->info.bIfaceIndex;
 572
 573         /* Setup control pipe */
 574         uerr = usbd_transfer_setup(uaa->device,
 575             &sc->sc_iface_index, sc->sc_ctrl_xfer,
 576             uhso_ctrl_config, UHSO_CTRL_MAX, sc, &sc->sc_mtx);
 577         if (uerr) {
 578                 device_printf(self, "Failed to setup control pipe: %s\n",
 579                     usbd_errstr(uerr));
 580                 goto out;
 581         }
 582
 583         if (USB_GET_DRIVER_INFO(uaa) == UHSO_STATIC_IFACE)
 584                 probe_f = uhso_probe_iface_static;
 585         else if (USB_GET_DRIVER_INFO(uaa) == UHSO_AUTO_IFACE)
 586                 probe_f = uhso_probe_iface_auto;
 587         else
 588                 goto out;
 589
 590         error = uhso_probe_iface(sc, uaa->info.bIfaceNum, probe_f);
 591         if (error != 0)
 592                 goto out;
 593
 594         sctx = device_get_sysctl_ctx(sc->sc_dev);
 595         soid = device_get_sysctl_tree(sc->sc_dev);
 596
 597         SYSCTL_ADD_STRING(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "type",
 598             CTLFLAG_RD, uhso_port[UHSO_IFACE_PORT(sc->sc_type)], 0,
 599             "Port available at this interface");
 600         SYSCTL_ADD_PROC(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "radio",
 601             CTLTYPE_INT | CTLFLAG_RWTUN, sc, 0, uhso_radio_sysctl, "I", "Enable radio");
 602
 603         /*
 604          * The default interface description on most Option devices isn't
 605          * very helpful. So we skip device_set_usb_desc and set the
 606          * device description manually.
 607          */
 608         device_set_desc_copy(self, uhso_port_type[UHSO_IFACE_PORT_TYPE(sc->sc_type)]);
 609         /* Announce device */
 610         device_printf(self, "<%s port> at <%s %s> on %s\n",
 611             uhso_port_type[UHSO_IFACE_PORT_TYPE(sc->sc_type)],
 612             usb_get_manufacturer(uaa->device),
 613             usb_get_product(uaa->device),
 614             device_get_nameunit(device_get_parent(self)));
 615
 616         if (sc->sc_ttys > 0) {
 617                 SYSCTL_ADD_INT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "ports",
 618                     CTLFLAG_RD, &sc->sc_ttys, 0, "Number of attached serial ports");
 619
 620                 tree = SYSCTL_ADD_NODE(sctx, SYSCTL_CHILDREN(soid), OID_AUTO,
 621                     "port", CTLFLAG_RD, NULL, "Serial ports");
 622         }
 623
 624         /*
 625          * Loop through the number of found TTYs and create sysctl
 626          * nodes for them.
 627          */
 628         for (i = 0; i < sc->sc_ttys; i++) {
 629                 ht = &sc->sc_tty[i];
 630                 ucom = &sc->sc_ucom[i];
 631
 632                 if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_MUX)
 633                         port = uhso_mux_port_map[ht->ht_muxport];
 634                 else
 635                         port = UHSO_IFACE_PORT_TYPE(sc->sc_type);
 636
 637                 desc = uhso_port_type_sysctl[port];
 638
 639                 tty_node = SYSCTL_ADD_NODE(sctx, SYSCTL_CHILDREN(tree), OID_AUTO,
 640                     desc, CTLFLAG_RD, NULL, "");
 641
 642                 ht->ht_name[0] = 0;
 643                 if (sc->sc_ttys == 1)
 644                         snprintf(ht->ht_name, 32, "cuaU%d", ucom->sc_super->sc_unit);
 645                 else {
 646                         snprintf(ht->ht_name, 32, "cuaU%d.%d",
 647                             ucom->sc_super->sc_unit, ucom->sc_subunit);
 648                 }
 649
 650                 desc = uhso_port_type[port];
 651                 SYSCTL_ADD_STRING(sctx, SYSCTL_CHILDREN(tty_node), OID_AUTO,
 652                     "tty", CTLFLAG_RD, ht->ht_name, 0, "");
 653                 SYSCTL_ADD_STRING(sctx, SYSCTL_CHILDREN(tty_node), OID_AUTO,
 654                     "desc", CTLFLAG_RD, desc, 0, "");
 655
 656                 if (bootverbose)
 657                         device_printf(sc->sc_dev,
 658                             "\"%s\" port at %s\n", desc, ht->ht_name);
 659         }
 660
 661         return (0);
 662 out:
 663         uhso_detach(sc->sc_dev);
 664         return (ENXIO);
 665 }
 666
 667 static int
 668 uhso_detach(device_t self)
 669 {
 670         struct uhso_softc *sc = device_get_softc(self);
 671         int i;
 672
 673         usbd_transfer_unsetup(sc->sc_xfer, 3);
 674         usbd_transfer_unsetup(sc->sc_ctrl_xfer, UHSO_CTRL_MAX);
 675         if (sc->sc_ttys > 0) {
 676                 ucom_detach(&sc->sc_super_ucom, sc->sc_ucom);
 677
 678                 for (i = 0; i < sc->sc_ttys; i++) {
 679                         if (sc->sc_tty[i].ht_muxport != -1) {
 680                                 usbd_transfer_unsetup(sc->sc_tty[i].ht_xfer,
 681                                     UHSO_CTRL_MAX);
 682                         }
 683                 }
 684         }
 685
 686         if (sc->sc_ifp != NULL) {
 687                 callout_drain(&sc->sc_c);
 688                 free_unr(uhso_ifnet_unit, sc->sc_ifp->if_dunit);
 689                 mtx_lock(&sc->sc_mtx);
 690                 uhso_if_stop(sc);
 691                 bpfdetach(sc->sc_ifp);
 692                 if_detach(sc->sc_ifp);
 693                 if_free(sc->sc_ifp);
 694                 mtx_unlock(&sc->sc_mtx);
 695                 usbd_transfer_unsetup(sc->sc_if_xfer, UHSO_IFNET_MAX);
 696         }
 697
 698         device_claim_softc(self);
 699
 700         uhso_free_softc(sc);
 701
 702         return (0);
 703 }
 704
 705 UCOM_UNLOAD_DRAIN(uhso);
 706
 707 static void
 708 uhso_free_softc(struct uhso_softc *sc)
 709 {
 710         if (ucom_unref(&sc->sc_super_ucom)) {
 711                 free(sc->sc_tty, M_USBDEV);
 712                 free(sc->sc_ucom, M_USBDEV);
 713                 mtx_destroy(&sc->sc_mtx);
 714                 device_free_softc(sc);
 715         }
 716 }
 717
 718 static void
 719 uhso_free(struct ucom_softc *ucom)
 720 {
 721         uhso_free_softc(ucom->sc_parent);
 722 }
 723
 724 static void
 725 uhso_test_autoinst(void *arg, struct usb_device *udev,
 726     struct usb_attach_arg *uaa)
 727 {
 728         struct usb_interface *iface;
 729         struct usb_interface_descriptor *id;
 730
 731         if (uaa->dev_state != UAA_DEV_READY || !uhso_autoswitch)
 732                 return;
 733
 734         iface = usbd_get_iface(udev, 0);
 735         if (iface == NULL)
 736                 return;
 737         id = iface->idesc;
 738         if (id == NULL || id->bInterfaceClass != UICLASS_MASS)
 739                 return;
 740         if (usbd_lookup_id_by_uaa(uhso_devs, sizeof(uhso_devs), uaa))
 741                 return;         /* no device match */
 742
 743         if (usb_msc_eject(udev, 0, MSC_EJECT_REZERO) == 0) {
 744                 /* success, mark the udev as disappearing */
 745                 uaa->dev_state = UAA_DEV_EJECTING;
 746         }
 747 }
 748
 749 static int
 750 uhso_driver_loaded(struct module *mod, int what, void *arg)
 751 {
 752         switch (what) {
 753         case MOD_LOAD:
 754                 /* register our autoinstall handler */
 755                 uhso_etag = EVENTHANDLER_REGISTER(usb_dev_configured,
 756                     uhso_test_autoinst, NULL, EVENTHANDLER_PRI_ANY);
 757                 /* create our unit allocator for inet devs */
 758                 uhso_ifnet_unit = new_unrhdr(0, INT_MAX, NULL);
 759                 break;
 760         case MOD_UNLOAD:
 761                 EVENTHANDLER_DEREGISTER(usb_dev_configured, uhso_etag);
 762                 delete_unrhdr(uhso_ifnet_unit);
 763                 break;
 764         default:
 765                 return (EOPNOTSUPP);
 766         }
 767         return (0);
 768 }
 769
 770 /*
 771  * Probe the interface type by querying the device. The elements
 772  * of an array indicates the capabilities of a particular interface.
 773  * Returns a bit mask with the interface capabilities.
 774  */
 775 static int
 776 uhso_probe_iface_auto(struct usb_device *udev, int index)
 777 {
 778         struct usb_device_request req;
 779         usb_error_t uerr;
 780         uint16_t actlen = 0;
 781         char port;
 782         char buf[17] = {0};
 783
 784         req.bmRequestType = UT_READ_VENDOR_DEVICE;
 785         req.bRequest = 0x86;
 786         USETW(req.wValue, 0);
 787         USETW(req.wIndex, 0);
 788         USETW(req.wLength, 17);
 789
 790         uerr = usbd_do_request_flags(udev, NULL, &req, buf,
 791             0, &actlen, USB_MS_HZ);
 792         if (uerr != 0) {
 793                 printf("%s: usbd_do_request_flags failed, %s\n",
 794                     __func__, usbd_errstr(uerr));
 795                 return (0);
 796         }
 797
 798         UHSO_DPRINTF(1, "actlen=%d\n", actlen);
 799         UHSO_HEXDUMP(buf, 17);
 800
 801         if (index < 0 || index > 16) {
 802                 UHSO_DPRINTF(0, "Index %d out of range\n", index);
 803                 return (0);
 804         }
 805
 806         UHSO_DPRINTF(1, "index=%d, type=%x[%s]\n", index, buf[index],
 807             uhso_port_type[(int)uhso_port_map[(int)buf[index]]]);
 808
 809         if (buf[index] >= uhso_port_map_max)
 810                 port = 0;
 811         else
 812                 port = uhso_port_map[(int)buf[index]];
 813
 814         switch (port) {
 815         case UHSO_PORT_TYPE_NETWORK:
 816                 return (UHSO_IFACE_SPEC(UHSO_IF_NET | UHSO_IF_MUX,
 817                     UHSO_PORT_SERIAL | UHSO_PORT_NETWORK, port));
 818         case UHSO_PORT_TYPE_DIAG:
 819         case UHSO_PORT_TYPE_DIAG2:
 820         case UHSO_PORT_TYPE_GPS:
 821         case UHSO_PORT_TYPE_GPSCTL:
 822         case UHSO_PORT_TYPE_CTL:
 823         case UHSO_PORT_TYPE_APP:
 824         case UHSO_PORT_TYPE_APP2:
 825         case UHSO_PORT_TYPE_MODEM:
 826                 return (UHSO_IFACE_SPEC(UHSO_IF_BULK,
 827                     UHSO_PORT_SERIAL, port));
 828         case UHSO_PORT_TYPE_MSD:
 829                 return (0);
 830         case UHSO_PORT_TYPE_UNKNOWN:
 831         default:
 832                 return (0);
 833         }
 834
 835         return (0);
 836 }
 837
 838 /*
 839  * Returns the capabilities of interfaces for devices that don't
 840  * support the automatic query.
 841  * Returns a bit mask with the interface capabilities.
 842  */
 843 static int
 844 uhso_probe_iface_static(struct usb_device *udev, int index)
 845 {
 846         struct usb_config_descriptor *cd;
 847
 848         cd = usbd_get_config_descriptor(udev);
 849         if (cd->bNumInterface <= 3) {
 850                 /* Cards with 3 or less interfaces */
 851                 switch (index) {
 852                 case 0:
 853                         return UHSO_IFACE_SPEC(UHSO_IF_NET | UHSO_IF_MUX,
 854                             UHSO_PORT_SERIAL | UHSO_PORT_NETWORK,
 855                             UHSO_PORT_TYPE_NETWORK);
 856                 case 1:
 857                         return UHSO_IFACE_SPEC(UHSO_IF_BULK,
 858                             UHSO_PORT_SERIAL, UHSO_PORT_TYPE_DIAG);
 859                 case 2:
 860                         return UHSO_IFACE_SPEC(UHSO_IF_BULK,
 861                             UHSO_PORT_SERIAL, UHSO_PORT_TYPE_MODEM);
 862                 }
 863         } else {
 864                 /* Cards with 4 interfaces */
 865                 switch (index) {
 866                 case 0:
 867                         return UHSO_IFACE_SPEC(UHSO_IF_NET | UHSO_IF_MUX,
 868                             UHSO_PORT_SERIAL | UHSO_PORT_NETWORK,
 869                             UHSO_PORT_TYPE_NETWORK);
 870                 case 1:
 871                         return UHSO_IFACE_SPEC(UHSO_IF_BULK,
 872                             UHSO_PORT_SERIAL, UHSO_PORT_TYPE_DIAG2);
 873                 case 2:
 874                         return UHSO_IFACE_SPEC(UHSO_IF_BULK,
 875                             UHSO_PORT_SERIAL, UHSO_PORT_TYPE_MODEM);
 876                 case 3:
 877                         return UHSO_IFACE_SPEC(UHSO_IF_BULK,
 878                             UHSO_PORT_SERIAL, UHSO_PORT_TYPE_DIAG);
 879                 }
 880         }
 881         return (0);
 882 }
 883
 884 /*
 885  * Probes an interface for its particular capabilities and attaches if
 886  * it's a supported interface.
 887  */
 888 static int
 889 uhso_probe_iface(struct uhso_softc *sc, int index,
 890     int (*probe)(struct usb_device *, int))
 891 {
 892         struct usb_interface *iface;
 893         int type, error;
 894
 895         UHSO_DPRINTF(1, "Probing for interface %d, probe_func=%p\n", index, probe);
 896
 897         type = probe(sc->sc_udev, index);
 898         UHSO_DPRINTF(1, "Probe result %x\n", type);
 899         if (type <= 0)
 900                 return (ENXIO);
 901
 902         sc->sc_type = type;
 903         iface = usbd_get_iface(sc->sc_udev, index);
 904
 905         if (UHSO_IFACE_PORT_TYPE(type) == UHSO_PORT_TYPE_NETWORK) {
 906                 error = uhso_attach_ifnet(sc, iface, type);
 907                 if (error) {
 908                         UHSO_DPRINTF(1, "uhso_attach_ifnet failed");
 909                         return (ENXIO);
 910                 }
 911
 912                 /*
 913                  * If there is an additional interrupt endpoint on this
 914                  * interface then we most likely have a multiplexed serial port
 915                  * available.
 916                  */
 917                 if (iface->idesc->bNumEndpoints < 3) {
 918                         sc->sc_type = UHSO_IFACE_SPEC(
 919                             UHSO_IFACE_USB_TYPE(type) & ~UHSO_IF_MUX,
 920                             UHSO_IFACE_PORT(type) & ~UHSO_PORT_SERIAL,
 921                             UHSO_IFACE_PORT_TYPE(type));
 922                         return (0);
 923                 }
 924
 925                 UHSO_DPRINTF(1, "Trying to attach mux. serial\n");
 926                 error = uhso_attach_muxserial(sc, iface, type);
 927                 if (error == 0 && sc->sc_ttys > 0) {
 928                         error = ucom_attach(&sc->sc_super_ucom, sc->sc_ucom,
 929                             sc->sc_ttys, sc, &uhso_ucom_callback, &sc->sc_mtx);
 930                         if (error) {
 931                                 device_printf(sc->sc_dev, "ucom_attach failed\n");
 932                                 return (ENXIO);
 933                         }
 934                         ucom_set_pnpinfo_usb(&sc->sc_super_ucom, sc->sc_dev);
 935
 936                         mtx_lock(&sc->sc_mtx);
 937                         usbd_transfer_start(sc->sc_xfer[UHSO_MUX_ENDPT_INTR]);
 938                         mtx_unlock(&sc->sc_mtx);
 939                 }
 940         } else if ((UHSO_IFACE_USB_TYPE(type) & UHSO_IF_BULK) &&
 941             UHSO_IFACE_PORT(type) & UHSO_PORT_SERIAL) {
 942
 943                 error = uhso_attach_bulkserial(sc, iface, type);
 944                 if (error)
 945                         return (ENXIO);
 946
 947                 error = ucom_attach(&sc->sc_super_ucom, sc->sc_ucom,
 948                     sc->sc_ttys, sc, &uhso_ucom_callback, &sc->sc_mtx);
 949                 if (error) {
 950                         device_printf(sc->sc_dev, "ucom_attach failed\n");
 951                         return (ENXIO);
 952                 }
 953                 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, sc->sc_dev);
 954         }
 955         else {
 956                 UHSO_DPRINTF(0, "Unknown type %x\n", type);
 957                 return (ENXIO);
 958         }
 959
 960         return (0);
 961 }
 962
 963 static int
 964 uhso_radio_ctrl(struct uhso_softc *sc, int onoff)
 965 {
 966         struct usb_device_request req;
 967         usb_error_t uerr;
 968
 969         req.bmRequestType = UT_VENDOR;
 970         req.bRequest = onoff ? 0x82 : 0x81;
 971         USETW(req.wValue, 0);
 972         USETW(req.wIndex, 0);
 973         USETW(req.wLength, 0);
 974
 975         uerr = usbd_do_request(sc->sc_udev, NULL, &req, NULL);
 976         if (uerr != 0) {
 977                 device_printf(sc->sc_dev, "usbd_do_request_flags failed: %s\n",
 978                     usbd_errstr(uerr));
 979                 return (-1);
 980         }
 981         return (onoff);
 982 }
 983
 984 static int
 985 uhso_radio_sysctl(SYSCTL_HANDLER_ARGS)
 986 {
 987         struct uhso_softc *sc = arg1;
 988         int error, radio;
 989
 990         radio = sc->sc_radio;
 991         error = sysctl_handle_int(oidp, &radio, 0, req);
 992         if (error)
 993                 return (error);
 994         if (radio != sc->sc_radio) {
 995                 radio = radio != 0 ? 1 : 0;
 996                 error = uhso_radio_ctrl(sc, radio);
 997                 if (error != -1)
 998                         sc->sc_radio = radio;
 999
1000         }
1001         return (0);
1002 }
1003
1004 /*
1005  * Expands allocated memory to fit an additional TTY.
1006  * Two arrays are kept with matching indexes, one for ucom and one
1007  * for our private data.
1008  */
1009 static int
1010 uhso_alloc_tty(struct uhso_softc *sc)
1011 {
1012
1013         sc->sc_ttys++;
1014         sc->sc_tty = reallocf(sc->sc_tty, sizeof(struct uhso_tty) * sc->sc_ttys,
1015             M_USBDEV, M_WAITOK | M_ZERO);
1016         if (sc->sc_tty == NULL)
1017                 return (-1);
1018
1019         sc->sc_ucom = reallocf(sc->sc_ucom,
1020             sizeof(struct ucom_softc) * sc->sc_ttys, M_USBDEV, M_WAITOK | M_ZERO);
1021         if (sc->sc_ucom == NULL)
1022                 return (-1);
1023
1024         sc->sc_tty[sc->sc_ttys - 1].ht_sc = sc;
1025
1026         UHSO_DPRINTF(1, "Allocated TTY %d\n", sc->sc_ttys - 1);
1027         return (sc->sc_ttys - 1);
1028 }
1029
1030 /*
1031  * Attach a multiplexed serial port
1032  * Data is read/written with requests on the default control pipe. An interrupt
1033  * endpoint returns when there is new data to be read.
1034  */
1035 static int
1036 uhso_attach_muxserial(struct uhso_softc *sc, struct usb_interface *iface,
1037     int type)
1038 {
1039         struct usb_descriptor *desc;
1040         int i, port, tty;
1041         usb_error_t uerr;
1042
1043         /*
1044          * The class specific interface (type 0x24) descriptor subtype field
1045          * contains a bitmask that specifies which (and how many) ports that
1046          * are available through this multiplexed serial port.
1047          */
1048         desc = usbd_find_descriptor(sc->sc_udev, NULL,
1049             iface->idesc->bInterfaceNumber, UDESC_CS_INTERFACE, 0xff, 0, 0);
1050         if (desc == NULL) {
1051                 UHSO_DPRINTF(0, "Failed to find UDESC_CS_INTERFACE\n");
1052                 return (ENXIO);
1053         }
1054
1055         UHSO_DPRINTF(1, "Mux port mask %x\n", desc->bDescriptorSubtype);
1056         if (desc->bDescriptorSubtype == 0)
1057                 return (ENXIO);
1058
1059         /*
1060          * The bitmask is one octet, loop through the number of
1061          * bits that are set and create a TTY for each.
1062          */
1063         for (i = 0; i < 8; i++) {
1064                 port = (1 << i);
1065                 if ((port & desc->bDescriptorSubtype) == port) {
1066                         UHSO_DPRINTF(2, "Found mux port %x (%d)\n", port, i);
1067                         tty = uhso_alloc_tty(sc);
1068                         if (tty < 0)
1069                                 return (ENOMEM);
1070                         sc->sc_tty[tty].ht_muxport = i;
1071                         uerr = usbd_transfer_setup(sc->sc_udev,
1072                             &sc->sc_iface_index, sc->sc_tty[tty].ht_xfer,
1073                             uhso_ctrl_config, UHSO_CTRL_MAX, sc, &sc->sc_mtx);
1074                         if (uerr) {
1075                                 device_printf(sc->sc_dev,
1076                                     "Failed to setup control pipe: %s\n",
1077                                     usbd_errstr(uerr));
1078                                 return (ENXIO);
1079                         }
1080                 }
1081         }
1082
1083         /* Setup the intr. endpoint */
1084         uerr = usbd_transfer_setup(sc->sc_udev,
1085             &iface->idesc->bInterfaceNumber, sc->sc_xfer,
1086             uhso_mux_config, 1, sc, &sc->sc_mtx);
1087         if (uerr)
1088                 return (ENXIO);
1089
1090         return (0);
1091 }
1092
1093 /*
1094  * Interrupt callback for the multiplexed serial port. Indicates
1095  * which serial port has data waiting.
1096  */
1097 static void
1098 uhso_mux_intr_callback(struct usb_xfer *xfer, usb_error_t error)
1099 {
1100         struct usb_page_cache *pc;
1101         struct usb_page_search res;
1102         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1103         unsigned int i, mux;
1104
1105         UHSO_DPRINTF(3, "status %d\n", USB_GET_STATE(xfer));
1106
1107         switch (USB_GET_STATE(xfer)) {
1108         case USB_ST_TRANSFERRED:
1109                 /*
1110                  * The multiplexed port number can be found at the first byte.
1111                  * It contains a bit mask, we transform this in to an integer.
1112                  */
1113                 pc = usbd_xfer_get_frame(xfer, 0);
1114                 usbd_get_page(pc, 0, &res);
1115
1116                 i = *((unsigned char *)res.buffer);
1117                 mux = 0;
1118                 while (i >>= 1) {
1119                         mux++;
1120                 }
1121
1122                 UHSO_DPRINTF(3, "mux port %d (%d)\n", mux, i);
1123                 if (mux > UHSO_MPORT_TYPE_NOMAX)
1124                         break;
1125
1126                 /* Issue a read for this serial port */
1127                 usbd_xfer_set_priv(
1128                     sc->sc_tty[mux].ht_xfer[UHSO_CTRL_READ],
1129                     &sc->sc_tty[mux]);
1130                 usbd_transfer_start(sc->sc_tty[mux].ht_xfer[UHSO_CTRL_READ]);
1131
1132                 break;
1133         case USB_ST_SETUP:
1134 tr_setup:
1135                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
1136                 usbd_transfer_submit(xfer);
1137                 break;
1138         default:
1139                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1140                 if (error == USB_ERR_CANCELLED)
1141                         break;
1142
1143                 usbd_xfer_set_stall(xfer);
1144                 goto tr_setup;
1145         }
1146 }
1147
1148 static void
1149 uhso_mux_read_callback(struct usb_xfer *xfer, usb_error_t error)
1150 {
1151         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1152         struct usb_page_cache *pc;
1153         struct usb_device_request req;
1154         struct uhso_tty *ht;
1155         int actlen, len;
1156
1157         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1158
1159         UHSO_DPRINTF(3, "status %d\n", USB_GET_STATE(xfer));
1160
1161         ht = usbd_xfer_get_priv(xfer);
1162         UHSO_DPRINTF(3, "ht=%p open=%d\n", ht, ht->ht_open);
1163
1164         switch (USB_GET_STATE(xfer)) {
1165         case USB_ST_TRANSFERRED:
1166                 /* Got data, send to ucom */
1167                 pc = usbd_xfer_get_frame(xfer, 1);
1168                 len = usbd_xfer_frame_len(xfer, 1);
1169
1170                 UHSO_DPRINTF(3, "got %d bytes on mux port %d\n", len,
1171                     ht->ht_muxport);
1172                 if (len <= 0) {
1173                         usbd_transfer_start(sc->sc_xfer[UHSO_MUX_ENDPT_INTR]);
1174                         break;
1175                 }
1176
1177                 /* Deliver data if the TTY is open, discard otherwise */
1178                 if (ht->ht_open)
1179                         ucom_put_data(&sc->sc_ucom[ht->ht_muxport], pc, 0, len);
1180                 /* FALLTHROUGH */
1181         case USB_ST_SETUP:
1182 tr_setup:
1183                 memset(&req, 0, sizeof(struct usb_device_request));
1184                 req.bmRequestType = UT_READ_CLASS_INTERFACE;
1185                 req.bRequest = UCDC_GET_ENCAPSULATED_RESPONSE;
1186                 USETW(req.wValue, 0);
1187                 USETW(req.wIndex, ht->ht_muxport);
1188                 USETW(req.wLength, 1024);
1189
1190                 pc = usbd_xfer_get_frame(xfer, 0);
1191                 usbd_copy_in(pc, 0, &req, sizeof(req));
1192
1193                 usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
1194                 usbd_xfer_set_frame_len(xfer, 1, 1024);
1195                 usbd_xfer_set_frames(xfer, 2);
1196                 usbd_transfer_submit(xfer);
1197                 break;
1198         default:
1199                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1200                 if (error == USB_ERR_CANCELLED)
1201                         break;
1202                 usbd_xfer_set_stall(xfer);
1203                 goto tr_setup;
1204         }
1205 }
1206
1207 static void
1208 uhso_mux_write_callback(struct usb_xfer *xfer, usb_error_t error)
1209 {
1210         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1211         struct uhso_tty *ht;
1212         struct usb_page_cache *pc;
1213         struct usb_device_request req;
1214         int actlen;
1215         struct usb_page_search res;
1216
1217         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1218
1219         ht = usbd_xfer_get_priv(xfer);
1220         UHSO_DPRINTF(3, "status=%d, using mux port %d\n",
1221             USB_GET_STATE(xfer), ht->ht_muxport);
1222
1223         switch (USB_GET_STATE(xfer)) {
1224         case USB_ST_TRANSFERRED:
1225                 UHSO_DPRINTF(3, "wrote %zd data bytes to muxport %d\n",
1226                     actlen - sizeof(struct usb_device_request) ,
1227                     ht->ht_muxport);
1228                 /* FALLTHROUGH */
1229         case USB_ST_SETUP:
1230 tr_setup:
1231                 pc = usbd_xfer_get_frame(xfer, 1);
1232                 if (ucom_get_data(&sc->sc_ucom[ht->ht_muxport], pc,
1233                     0, 32, &actlen)) {
1234
1235                         usbd_get_page(pc, 0, &res);
1236
1237                         memset(&req, 0, sizeof(struct usb_device_request));
1238                         req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
1239                         req.bRequest = UCDC_SEND_ENCAPSULATED_COMMAND;
1240                         USETW(req.wValue, 0);
1241                         USETW(req.wIndex, ht->ht_muxport);
1242                         USETW(req.wLength, actlen);
1243
1244                         pc = usbd_xfer_get_frame(xfer, 0);
1245                         usbd_copy_in(pc, 0, &req, sizeof(req));
1246
1247                         usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
1248                         usbd_xfer_set_frame_len(xfer, 1, actlen);
1249                         usbd_xfer_set_frames(xfer, 2);
1250
1251                         UHSO_DPRINTF(3, "Prepared %d bytes for transmit "
1252                             "on muxport %d\n", actlen, ht->ht_muxport);
1253
1254                         usbd_transfer_submit(xfer);
1255                 }
1256                 break;
1257         default:
1258                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1259                 if (error == USB_ERR_CANCELLED)
1260                         break;
1261                 usbd_xfer_set_stall(xfer);
1262                 goto tr_setup;
1263         }
1264 }
1265
1266 static int
1267 uhso_attach_bulkserial(struct uhso_softc *sc, struct usb_interface *iface,
1268     int type)
1269 {
1270         usb_error_t uerr;
1271         int tty;
1272
1273         /* Try attaching RD/WR/INTR first */
1274         uerr = usbd_transfer_setup(sc->sc_udev,
1275             &iface->idesc->bInterfaceNumber, sc->sc_xfer,
1276             uhso_bs_config, UHSO_BULK_ENDPT_MAX, sc, &sc->sc_mtx);
1277         if (uerr) {
1278                 /* Try only RD/WR */
1279                 uerr = usbd_transfer_setup(sc->sc_udev,
1280                     &iface->idesc->bInterfaceNumber, sc->sc_xfer,
1281                     uhso_bs_config, UHSO_BULK_ENDPT_MAX - 1, sc, &sc->sc_mtx);
1282         }
1283         if (uerr) {
1284                 UHSO_DPRINTF(0, "usbd_transfer_setup failed");
1285                 return (-1);
1286         }
1287
1288         tty = uhso_alloc_tty(sc);
1289         if (tty < 0) {
1290                 usbd_transfer_unsetup(sc->sc_xfer, UHSO_BULK_ENDPT_MAX);
1291                 return (ENOMEM);
1292         }
1293
1294         sc->sc_tty[tty].ht_muxport = -1;
1295         return (0);
1296 }
1297
1298 static void
1299 uhso_bs_read_callback(struct usb_xfer *xfer, usb_error_t error)
1300 {
1301         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1302         struct usb_page_cache *pc;
1303         int actlen;
1304
1305         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1306
1307         UHSO_DPRINTF(3, "status %d, actlen=%d\n", USB_GET_STATE(xfer), actlen);
1308
1309         switch (USB_GET_STATE(xfer)) {
1310         case USB_ST_TRANSFERRED:
1311                 pc = usbd_xfer_get_frame(xfer, 0);
1312                 ucom_put_data(&sc->sc_ucom[0], pc, 0, actlen);
1313                 /* FALLTHROUGH */
1314         case USB_ST_SETUP:
1315 tr_setup:
1316                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
1317                 usbd_transfer_submit(xfer);
1318         break;
1319         default:
1320                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1321                 if (error == USB_ERR_CANCELLED)
1322                         break;
1323                 usbd_xfer_set_stall(xfer);
1324                 goto tr_setup;
1325         }
1326 }
1327
1328 static void
1329 uhso_bs_write_callback(struct usb_xfer *xfer, usb_error_t error)
1330 {
1331         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1332         struct usb_page_cache *pc;
1333         int actlen;
1334
1335         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1336
1337         UHSO_DPRINTF(3, "status %d, actlen=%d\n", USB_GET_STATE(xfer), actlen);
1338
1339         switch (USB_GET_STATE(xfer)) {
1340         case USB_ST_TRANSFERRED:
1341         case USB_ST_SETUP:
1342 tr_setup:
1343                 pc = usbd_xfer_get_frame(xfer, 0);
1344                 if (ucom_get_data(&sc->sc_ucom[0], pc, 0, 8192, &actlen)) {
1345                         usbd_xfer_set_frame_len(xfer, 0, actlen);
1346                         usbd_transfer_submit(xfer);
1347                 }
1348                 break;
1349         break;
1350         default:
1351                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1352                 if (error == USB_ERR_CANCELLED)
1353                         break;
1354                 usbd_xfer_set_stall(xfer);
1355                 goto tr_setup;
1356         }
1357 }
1358
1359 static void
1360 uhso_bs_cfg(struct uhso_softc *sc)
1361 {
1362         struct usb_device_request req;
1363         usb_error_t uerr;
1364
1365         if (!(UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK))
1366                 return;
1367
1368         req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
1369         req.bRequest = UCDC_SET_CONTROL_LINE_STATE;
1370         USETW(req.wValue, sc->sc_line);
1371         USETW(req.wIndex, sc->sc_iface_no);
1372         USETW(req.wLength, 0);
1373
1374         uerr = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom[0], &req, NULL, 0, 1000);
1375         if (uerr != 0) {
1376                 device_printf(sc->sc_dev, "failed to set ctrl line state to "
1377                     "0x%02x: %s\n", sc->sc_line, usbd_errstr(uerr));
1378         }
1379 }
1380
1381 static void
1382 uhso_bs_intr_callback(struct usb_xfer *xfer, usb_error_t error)
1383 {
1384         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1385         struct usb_page_cache *pc;
1386         int actlen;
1387         struct usb_cdc_notification cdc;
1388
1389         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1390         UHSO_DPRINTF(3, "status %d, actlen=%d\n", USB_GET_STATE(xfer), actlen);
1391
1392         switch (USB_GET_STATE(xfer)) {
1393         case USB_ST_TRANSFERRED:
1394                 if (actlen < UCDC_NOTIFICATION_LENGTH) {
1395                         UHSO_DPRINTF(0, "UCDC notification too short: %d\n", actlen);
1396                         goto tr_setup;
1397                 }
1398                 else if (actlen > (int)sizeof(struct usb_cdc_notification)) {
1399                         UHSO_DPRINTF(0, "UCDC notification too large: %d\n", actlen);
1400                         actlen = sizeof(struct usb_cdc_notification);
1401                 }
1402
1403                 pc = usbd_xfer_get_frame(xfer, 0);
1404                 usbd_copy_out(pc, 0, &cdc, actlen);
1405
1406                 if (UGETW(cdc.wIndex) != sc->sc_iface_no) {
1407                         UHSO_DPRINTF(0, "Interface mismatch, got %d expected %d\n",
1408                             UGETW(cdc.wIndex), sc->sc_iface_no);
1409                         goto tr_setup;
1410                 }
1411
1412                 if (cdc.bmRequestType == UCDC_NOTIFICATION &&
1413                     cdc.bNotification == UCDC_N_SERIAL_STATE) {
1414                         UHSO_DPRINTF(2, "notify = 0x%02x\n", cdc.data[0]);
1415
1416                         sc->sc_msr = 0;
1417                         sc->sc_lsr = 0;
1418                         if (cdc.data[0] & UCDC_N_SERIAL_RI)
1419                                 sc->sc_msr |= SER_RI;
1420                         if (cdc.data[0] & UCDC_N_SERIAL_DSR)
1421                                 sc->sc_msr |= SER_DSR;
1422                         if (cdc.data[0] & UCDC_N_SERIAL_DCD)
1423                                 sc->sc_msr |= SER_DCD;
1424
1425                         ucom_status_change(&sc->sc_ucom[0]);
1426                 }
1427         case USB_ST_SETUP:
1428 tr_setup:
1429         default:
1430                 if (error == USB_ERR_CANCELLED)
1431                         break;
1432                 usbd_xfer_set_stall(xfer);
1433                 goto tr_setup;
1434         }
1435 }
1436
1437 static void
1438 uhso_ucom_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
1439 {
1440         struct uhso_softc *sc = ucom->sc_parent;
1441
1442         *lsr = sc->sc_lsr;
1443         *msr = sc->sc_msr;
1444 }
1445
1446 static void
1447 uhso_ucom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
1448 {
1449         struct uhso_softc *sc = ucom->sc_parent;
1450
1451         if (!(UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK))
1452                 return;
1453
1454         if (onoff)
1455                 sc->sc_line |= UCDC_LINE_DTR;
1456         else
1457                 sc->sc_line &= ~UCDC_LINE_DTR;
1458
1459         uhso_bs_cfg(sc);
1460 }
1461
1462 static void
1463 uhso_ucom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
1464 {
1465         struct uhso_softc *sc = ucom->sc_parent;
1466
1467         if (!(UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK))
1468                 return;
1469
1470         if (onoff)
1471                 sc->sc_line |= UCDC_LINE_RTS;
1472         else
1473                 sc->sc_line &= ~UCDC_LINE_RTS;
1474
1475         uhso_bs_cfg(sc);
1476 }
1477
1478 static void
1479 uhso_ucom_start_read(struct ucom_softc *ucom)
1480 {
1481         struct uhso_softc *sc = ucom->sc_parent;
1482
1483         UHSO_DPRINTF(3, "unit=%d, subunit=%d\n",
1484             ucom->sc_super->sc_unit, ucom->sc_subunit);
1485
1486         if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_MUX) {
1487                 sc->sc_tty[ucom->sc_subunit].ht_open = 1;
1488                 usbd_transfer_start(sc->sc_xfer[UHSO_MUX_ENDPT_INTR]);
1489         }
1490         else if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK) {
1491                 sc->sc_tty[0].ht_open = 1;
1492                 usbd_transfer_start(sc->sc_xfer[UHSO_BULK_ENDPT_READ]);
1493                 if (sc->sc_xfer[UHSO_BULK_ENDPT_INTR] != NULL)
1494                         usbd_transfer_start(sc->sc_xfer[UHSO_BULK_ENDPT_INTR]);
1495         }
1496 }
1497
1498 static void
1499 uhso_ucom_stop_read(struct ucom_softc *ucom)
1500 {
1501
1502         struct uhso_softc *sc = ucom->sc_parent;
1503
1504         if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_MUX) {
1505                 sc->sc_tty[ucom->sc_subunit].ht_open = 0;
1506                 usbd_transfer_stop(
1507                     sc->sc_tty[ucom->sc_subunit].ht_xfer[UHSO_CTRL_READ]);
1508         }
1509         else if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK) {
1510                 sc->sc_tty[0].ht_open = 0;
1511                 usbd_transfer_start(sc->sc_xfer[UHSO_BULK_ENDPT_READ]);
1512                 if (sc->sc_xfer[UHSO_BULK_ENDPT_INTR] != NULL)
1513                         usbd_transfer_stop(sc->sc_xfer[UHSO_BULK_ENDPT_INTR]);
1514         }
1515 }
1516
1517 static void
1518 uhso_ucom_start_write(struct ucom_softc *ucom)
1519 {
1520         struct uhso_softc *sc = ucom->sc_parent;
1521
1522         if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_MUX) {
1523                 UHSO_DPRINTF(3, "local unit %d\n", ucom->sc_subunit);
1524
1525                 usbd_transfer_start(sc->sc_xfer[UHSO_MUX_ENDPT_INTR]);
1526
1527                 usbd_xfer_set_priv(
1528                     sc->sc_tty[ucom->sc_subunit].ht_xfer[UHSO_CTRL_WRITE],
1529                     &sc->sc_tty[ucom->sc_subunit]);
1530                 usbd_transfer_start(
1531                     sc->sc_tty[ucom->sc_subunit].ht_xfer[UHSO_CTRL_WRITE]);
1532
1533         }
1534         else if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK) {
1535                 usbd_transfer_start(sc->sc_xfer[UHSO_BULK_ENDPT_WRITE]);
1536         }
1537 }
1538
1539 static void
1540 uhso_ucom_stop_write(struct ucom_softc *ucom)
1541 {
1542         struct uhso_softc *sc = ucom->sc_parent;
1543
1544         if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_MUX) {
1545                 usbd_transfer_stop(
1546                     sc->sc_tty[ucom->sc_subunit].ht_xfer[UHSO_CTRL_WRITE]);
1547         }
1548         else if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK) {
1549                 usbd_transfer_stop(sc->sc_xfer[UHSO_BULK_ENDPT_WRITE]);
1550         }
1551 }
1552
1553 static int
1554 uhso_attach_ifnet(struct uhso_softc *sc, struct usb_interface *iface, int type)
1555 {
1556         struct ifnet *ifp;
1557         usb_error_t uerr;
1558         struct sysctl_ctx_list *sctx;
1559         struct sysctl_oid *soid;
1560         unsigned int devunit;
1561
1562         uerr = usbd_transfer_setup(sc->sc_udev,
1563             &iface->idesc->bInterfaceNumber, sc->sc_if_xfer,
1564             uhso_ifnet_config, UHSO_IFNET_MAX, sc, &sc->sc_mtx);
1565         if (uerr) {
1566                 UHSO_DPRINTF(0, "usbd_transfer_setup failed: %s\n",
1567                     usbd_errstr(uerr));
1568                 return (-1);
1569         }
1570
1571         sc->sc_ifp = ifp = if_alloc(IFT_OTHER);
1572         if (sc->sc_ifp == NULL) {
1573                 device_printf(sc->sc_dev, "if_alloc() failed\n");
1574                 return (-1);
1575         }
1576
1577         callout_init_mtx(&sc->sc_c, &sc->sc_mtx, 0);
1578         mtx_lock(&sc->sc_mtx);
1579         callout_reset(&sc->sc_c, 1, uhso_if_rxflush, sc);
1580         mtx_unlock(&sc->sc_mtx);
1581
1582         /*
1583          * We create our own unit numbers for ifnet devices because the
1584          * USB interface unit numbers can be at arbitrary positions yielding
1585          * odd looking device names.
1586          */
1587         devunit = alloc_unr(uhso_ifnet_unit);
1588
1589         if_initname(ifp, device_get_name(sc->sc_dev), devunit);
1590         ifp->if_mtu = UHSO_MAX_MTU;
1591         ifp->if_ioctl = uhso_if_ioctl;
1592         ifp->if_init = uhso_if_init;
1593         ifp->if_start = uhso_if_start;
1594         ifp->if_output = uhso_if_output;
1595         ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_NOARP;
1596         ifp->if_softc = sc;
1597         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
1598         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
1599         IFQ_SET_READY(&ifp->if_snd);
1600
1601         if_attach(ifp);
1602         bpfattach(ifp, DLT_RAW, 0);
1603
1604         sctx = device_get_sysctl_ctx(sc->sc_dev);
1605         soid = device_get_sysctl_tree(sc->sc_dev);
1606         /* Unlocked read... */
1607         SYSCTL_ADD_STRING(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "netif",
1608             CTLFLAG_RD, ifp->if_xname, 0, "Attached network interface");
1609
1610         return (0);
1611 }
1612
1613 static void
1614 uhso_ifnet_read_callback(struct usb_xfer *xfer, usb_error_t error)
1615 {
1616         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1617         struct mbuf *m;
1618         struct usb_page_cache *pc;
1619         int actlen;
1620
1621         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1622
1623         UHSO_DPRINTF(3, "status=%d, actlen=%d\n", USB_GET_STATE(xfer), actlen);
1624
1625         switch (USB_GET_STATE(xfer)) {
1626         case USB_ST_TRANSFERRED:
1627                 if (actlen > 0 && (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1628                         pc = usbd_xfer_get_frame(xfer, 0);
1629                         m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1630                         usbd_copy_out(pc, 0, mtod(m, uint8_t *), actlen);
1631                         m->m_pkthdr.len = m->m_len = actlen;
1632                         /* Enqueue frame for further processing */
1633                         _IF_ENQUEUE(&sc->sc_rxq, m);
1634                         if (!callout_pending(&sc->sc_c) ||
1635                             !callout_active(&sc->sc_c)) {
1636                                 callout_schedule(&sc->sc_c, 1);
1637                         }
1638                 }
1639         /* FALLTHROUGH */
1640         case USB_ST_SETUP:
1641 tr_setup:
1642                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
1643                 usbd_transfer_submit(xfer);
1644                 break;
1645         default:
1646                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1647                 if (error == USB_ERR_CANCELLED)
1648                         break;
1649                 usbd_xfer_set_stall(xfer);
1650                 goto tr_setup;
1651         }
1652 }
1653
1654 /*
1655  * Deferred RX processing, called with mutex locked.
1656  *
1657  * Each frame we receive might contain several small ip-packets as well
1658  * as partial ip-packets. We need to separate/assemble them into individual
1659  * packets before sending them to the ip-layer.
1660  */
1661 static void
1662 uhso_if_rxflush(void *arg)
1663 {
1664         struct uhso_softc *sc = arg;
1665         struct ifnet *ifp = sc->sc_ifp;
1666         uint8_t *cp;
1667         struct mbuf *m, *m0, *mwait;
1668         struct ip *ip;
1669 #ifdef INET6
1670         struct ip6_hdr *ip6;
1671 #endif
1672         uint16_t iplen;
1673         int isr;
1674
1675         m = NULL;
1676         mwait = sc->sc_mwait;
1677         for (;;) {
1678                 if (m == NULL) {
1679                         _IF_DEQUEUE(&sc->sc_rxq, m);
1680                         if (m == NULL)
1681                                 break;
1682                         UHSO_DPRINTF(3, "dequeue m=%p, len=%d\n", m, m->m_len);
1683                 }
1684                 mtx_unlock(&sc->sc_mtx);
1685
1686                 /* Do we have a partial packet waiting? */
1687                 if (mwait != NULL) {
1688                         m0 = mwait;
1689                         mwait = NULL;
1690
1691                         UHSO_DPRINTF(3, "partial m0=%p(%d), concat w/ m=%p(%d)\n",
1692                             m0, m0->m_len, m, m->m_len);
1693
1694                         m_catpkt(m0, m);
1695                         m = m_pullup(m0, sizeof(struct ip));
1696                         if (m == NULL) {
1697                                 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1698                                 UHSO_DPRINTF(0, "m_pullup failed\n");
1699                                 mtx_lock(&sc->sc_mtx);
1700                                 continue;
1701                         }
1702                         UHSO_DPRINTF(3, "Constructed mbuf=%p, len=%d\n",
1703                             m, m->m_pkthdr.len);
1704                 }
1705
1706                 cp = mtod(m, uint8_t *);
1707                 ip = (struct ip *)cp;
1708 #ifdef INET6
1709                 ip6 = (struct ip6_hdr *)cp;
1710 #endif
1711
1712                 /* Check for IPv4 */
1713                 if (ip->ip_v == IPVERSION) {
1714                         iplen = htons(ip->ip_len);
1715                         isr = NETISR_IP;
1716                 }
1717 #ifdef INET6
1718                 /* Check for IPv6 */
1719                 else if ((ip6->ip6_vfc & IPV6_VERSION_MASK) == IPV6_VERSION) {
1720                         iplen = htons(ip6->ip6_plen);
1721                         isr = NETISR_IPV6;
1722                 }
1723 #endif
1724                 else {
1725                         UHSO_DPRINTF(0, "got unexpected ip version %d, "
1726                             "m=%p, len=%d\n", (*cp & 0xf0) >> 4, m, m->m_len);
1727                         if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1728                         UHSO_HEXDUMP(cp, 4);
1729                         m_freem(m);
1730                         m = NULL;
1731                         mtx_lock(&sc->sc_mtx);
1732                         continue;
1733                 }
1734
1735                 if (iplen == 0) {
1736                         UHSO_DPRINTF(0, "Zero IP length\n");
1737                         if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1738                         m_freem(m);
1739                         m = NULL;
1740                         mtx_lock(&sc->sc_mtx);
1741                         continue;
1742                 }
1743
1744                 UHSO_DPRINTF(3, "m=%p, len=%d, cp=%p, iplen=%d\n",
1745                     m, m->m_pkthdr.len, cp, iplen);
1746
1747                 m0 = NULL;
1748
1749                 /* More IP packets in this mbuf */
1750                 if (iplen < m->m_pkthdr.len) {
1751                         m0 = m;
1752
1753                         /*
1754                          * Allocate a new mbuf for this IP packet and
1755                          * copy the IP-packet into it.
1756                          */
1757                         m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR);
1758                         memcpy(mtod(m, uint8_t *), mtod(m0, uint8_t *), iplen);
1759                         m->m_pkthdr.len = m->m_len = iplen;
1760
1761                         /* Adjust the size of the original mbuf */
1762                         m_adj(m0, iplen);
1763                         m0 = m_defrag(m0, M_WAITOK);
1764
1765                         UHSO_DPRINTF(3, "New mbuf=%p, len=%d/%d, m0=%p, "
1766                             "m0_len=%d/%d\n", m, m->m_pkthdr.len, m->m_len,
1767                             m0, m0->m_pkthdr.len, m0->m_len);
1768                 }
1769                 else if (iplen > m->m_pkthdr.len) {
1770                         UHSO_DPRINTF(3, "Deferred mbuf=%p, len=%d\n",
1771                             m, m->m_pkthdr.len);
1772                         mwait = m;
1773                         m = NULL;
1774                         mtx_lock(&sc->sc_mtx);
1775                         continue;
1776                 }
1777
1778                 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
1779                 m->m_pkthdr.rcvif = ifp;
1780
1781                 /* Dispatch to IP layer */
1782                 BPF_MTAP(sc->sc_ifp, m);
1783                 M_SETFIB(m, ifp->if_fib);
1784                 netisr_dispatch(isr, m);
1785                 m = m0 != NULL ? m0 : NULL;
1786                 mtx_lock(&sc->sc_mtx);
1787         }
1788         sc->sc_mwait = mwait;
1789 }
1790
1791 static void
1792 uhso_ifnet_write_callback(struct usb_xfer *xfer, usb_error_t error)
1793 {
1794         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1795         struct ifnet *ifp = sc->sc_ifp;
1796         struct usb_page_cache *pc;
1797         struct mbuf *m;
1798         int actlen;
1799
1800         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1801
1802         UHSO_DPRINTF(3, "status %d, actlen=%d\n", USB_GET_STATE(xfer), actlen);
1803
1804         switch (USB_GET_STATE(xfer)) {
1805         case USB_ST_TRANSFERRED:
1806                 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
1807                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1808         case USB_ST_SETUP:
1809 tr_setup:
1810                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1811                 if (m == NULL)
1812                         break;
1813
1814                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1815
1816                 if (m->m_pkthdr.len > MCLBYTES)
1817                         m->m_pkthdr.len = MCLBYTES;
1818
1819                 usbd_xfer_set_frame_len(xfer, 0, m->m_pkthdr.len);
1820                 pc = usbd_xfer_get_frame(xfer, 0);
1821                 usbd_m_copy_in(pc, 0, m, 0, m->m_pkthdr.len);
1822                 usbd_transfer_submit(xfer);
1823
1824                 BPF_MTAP(ifp, m);
1825                 m_freem(m);
1826                 break;
1827         default:
1828                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1829                 if (error == USB_ERR_CANCELLED)
1830                         break;
1831                 usbd_xfer_set_stall(xfer);
1832                 goto tr_setup;
1833         }
1834 }
1835
1836 static int
1837 uhso_if_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1838 {
1839         struct uhso_softc *sc;
1840
1841         sc = ifp->if_softc;
1842
1843         switch (cmd) {
1844         case SIOCSIFFLAGS:
1845                 if (ifp->if_flags & IFF_UP) {
1846                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1847                                 uhso_if_init(sc);
1848                         }
1849                 }
1850                 else {
1851                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1852                                 mtx_lock(&sc->sc_mtx);
1853                                 uhso_if_stop(sc);
1854                                 mtx_unlock(&sc->sc_mtx);
1855                         }
1856                 }
1857                 break;
1858         case SIOCSIFADDR:
1859         case SIOCADDMULTI:
1860         case SIOCDELMULTI:
1861                 break;
1862         default:
1863                 return (EINVAL);
1864         }
1865         return (0);
1866 }
1867
1868 static void
1869 uhso_if_init(void *priv)
1870 {
1871         struct uhso_softc *sc = priv;
1872         struct ifnet *ifp = sc->sc_ifp;
1873
1874         mtx_lock(&sc->sc_mtx);
1875         uhso_if_stop(sc);
1876         ifp = sc->sc_ifp;
1877         ifp->if_flags |= IFF_UP;
1878         ifp->if_drv_flags |= IFF_DRV_RUNNING;
1879         mtx_unlock(&sc->sc_mtx);
1880
1881         UHSO_DPRINTF(2, "ifnet initialized\n");
1882 }
1883
1884 static int
1885 uhso_if_output(struct ifnet *ifp, struct mbuf *m0, const struct sockaddr *dst,
1886     struct route *ro)
1887 {
1888         int error;
1889
1890         /* Only IPv4/6 support */
1891         if (dst->sa_family != AF_INET
1892 #ifdef INET6
1893            && dst->sa_family != AF_INET6
1894 #endif
1895          ) {
1896                 return (EAFNOSUPPORT);
1897         }
1898
1899         error = (ifp->if_transmit)(ifp, m0);
1900         if (error) {
1901                 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1902                 return (ENOBUFS);
1903         }
1904         if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
1905         return (0);
1906 }
1907
1908 static void
1909 uhso_if_start(struct ifnet *ifp)
1910 {
1911         struct uhso_softc *sc = ifp->if_softc;
1912
1913         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1914                 UHSO_DPRINTF(1, "Not running\n");
1915                 return;
1916         }
1917
1918         mtx_lock(&sc->sc_mtx);
1919         usbd_transfer_start(sc->sc_if_xfer[UHSO_IFNET_READ]);
1920         usbd_transfer_start(sc->sc_if_xfer[UHSO_IFNET_WRITE]);
1921         mtx_unlock(&sc->sc_mtx);
1922         UHSO_DPRINTF(3, "interface started\n");
1923 }
1924
1925 static void
1926 uhso_if_stop(struct uhso_softc *sc)
1927 {
1928
1929         usbd_transfer_stop(sc->sc_if_xfer[UHSO_IFNET_READ]);
1930         usbd_transfer_stop(sc->sc_if_xfer[UHSO_IFNET_WRITE]);
1931         sc->sc_ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1932 }