sys/bus/u4b/net/uhso.c

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