sys/dev/usb/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 GTM661W */
 272         UHSO_DEV(OPTION, GTM661W, UHSO_AUTO_IFACE),
 273         /* Option iCON EDGE */
 274         UHSO_DEV(OPTION, ICONEDGE, UHSO_STATIC_IFACE),
 275         /* Option Module HSxPA */
 276         UHSO_DEV(OPTION, MODHSXPA, UHSO_STATIC_IFACE),
 277         /* Option iCON 321 */
 278         UHSO_DEV(OPTION, ICON321, UHSO_STATIC_IFACE),
 279         /* Option iCON 322 */
 280         UHSO_DEV(OPTION, GTICON322, UHSO_STATIC_IFACE),
 281         /* Option iCON 505 */
 282         UHSO_DEV(OPTION, ICON505, UHSO_AUTO_IFACE),
 283         /* Option iCON 452 */
 284         UHSO_DEV(OPTION, ICON505, UHSO_AUTO_IFACE),
 285 #undef UHSO_DEV
 286 };
 287
 288 static SYSCTL_NODE(_hw_usb, OID_AUTO, uhso, CTLFLAG_RW, 0, "USB uhso");
 289 static int uhso_autoswitch = 1;
 290 SYSCTL_INT(_hw_usb_uhso, OID_AUTO, auto_switch, CTLFLAG_RW,
 291     &uhso_autoswitch, 0, "Automatically switch to modem mode");
 292
 293 #ifdef USB_DEBUG
 294 #ifdef UHSO_DEBUG
 295 static int uhso_debug = UHSO_DEBUG;
 296 #else
 297 static int uhso_debug = -1;
 298 #endif
 299
 300 SYSCTL_INT(_hw_usb_uhso, OID_AUTO, debug, CTLFLAG_RW,
 301     &uhso_debug, 0, "Debug level");
 302
 303 #define UHSO_DPRINTF(n, x, ...) {\
 304         if (uhso_debug >= n) {\
 305                 printf("%s: " x, __func__, ##__VA_ARGS__);\
 306         }\
 307 }
 308 #else
 309 #define UHSO_DPRINTF(n, x, ...)
 310 #endif
 311
 312 #ifdef UHSO_DEBUG_HEXDUMP
 313 # define UHSO_HEXDUMP(_buf, _len) do { \
 314   { \
 315         size_t __tmp; \
 316         const char *__buf = (const char *)_buf; \
 317         for (__tmp = 0; __tmp < _len; __tmp++) \
 318                 printf("%02hhx ", *__buf++); \
 319     printf("\n"); \
 320   } \
 321 } while(0)
 322 #else
 323 # define UHSO_HEXDUMP(_buf, _len)
 324 #endif
 325
 326 enum {
 327         UHSO_MUX_ENDPT_INTR = 0,
 328         UHSO_MUX_ENDPT_MAX
 329 };
 330
 331 enum {
 332         UHSO_CTRL_READ = 0,
 333         UHSO_CTRL_WRITE,
 334         UHSO_CTRL_MAX
 335 };
 336
 337 enum {
 338         UHSO_IFNET_READ = 0,
 339         UHSO_IFNET_WRITE,
 340         UHSO_IFNET_MAX
 341 };
 342
 343 enum {
 344         UHSO_BULK_ENDPT_READ = 0,
 345         UHSO_BULK_ENDPT_WRITE,
 346         UHSO_BULK_ENDPT_INTR,
 347         UHSO_BULK_ENDPT_MAX
 348 };
 349
 350 static usb_callback_t uhso_mux_intr_callback;
 351 static usb_callback_t uhso_mux_read_callback;
 352 static usb_callback_t uhso_mux_write_callback;
 353 static usb_callback_t uhso_bs_read_callback;
 354 static usb_callback_t uhso_bs_write_callback;
 355 static usb_callback_t uhso_bs_intr_callback;
 356 static usb_callback_t uhso_ifnet_read_callback;
 357 static usb_callback_t uhso_ifnet_write_callback;
 358
 359 /* Config used for the default control pipes */
 360 static const struct usb_config uhso_ctrl_config[UHSO_CTRL_MAX] = {
 361         [UHSO_CTRL_READ] = {
 362                 .type = UE_CONTROL,
 363                 .endpoint = 0x00,
 364                 .direction = UE_DIR_ANY,
 365                 .flags = { .pipe_bof = 1, .short_xfer_ok = 1 },
 366                 .bufsize = sizeof(struct usb_device_request) + 1024,
 367                 .callback = &uhso_mux_read_callback
 368         },
 369
 370         [UHSO_CTRL_WRITE] = {
 371                 .type = UE_CONTROL,
 372                 .endpoint = 0x00,
 373                 .direction = UE_DIR_ANY,
 374                 .flags = { .pipe_bof = 1, .force_short_xfer = 1 },
 375                 .bufsize = sizeof(struct usb_device_request) + 1024,
 376                 .timeout = 1000,
 377                 .callback = &uhso_mux_write_callback
 378         }
 379 };
 380
 381 /* Config for the multiplexed serial ports */
 382 static const struct usb_config uhso_mux_config[UHSO_MUX_ENDPT_MAX] = {
 383         [UHSO_MUX_ENDPT_INTR] = {
 384                 .type = UE_INTERRUPT,
 385                 .endpoint = UE_ADDR_ANY,
 386                 .direction = UE_DIR_IN,
 387                 .flags = { .short_xfer_ok = 1 },
 388                 .bufsize = 0,
 389                 .callback = &uhso_mux_intr_callback,
 390         }
 391 };
 392
 393 /* Config for the raw IP-packet interface */
 394 static const struct usb_config uhso_ifnet_config[UHSO_IFNET_MAX] = {
 395         [UHSO_IFNET_READ] = {
 396                 .type = UE_BULK,
 397                 .endpoint = UE_ADDR_ANY,
 398                 .direction = UE_DIR_IN,
 399                 .flags = { .pipe_bof = 1, .short_xfer_ok = 1 },
 400                 .bufsize = MCLBYTES,
 401                 .callback = &uhso_ifnet_read_callback
 402         },
 403         [UHSO_IFNET_WRITE] = {
 404                 .type = UE_BULK,
 405                 .endpoint = UE_ADDR_ANY,
 406                 .direction = UE_DIR_OUT,
 407                 .flags = { .pipe_bof = 1, .force_short_xfer = 1 },
 408                 .bufsize = MCLBYTES,
 409                 .timeout = 5 * USB_MS_HZ,
 410                 .callback = &uhso_ifnet_write_callback
 411         }
 412 };
 413
 414 /* Config for interfaces with normal bulk serial ports */
 415 static const struct usb_config uhso_bs_config[UHSO_BULK_ENDPT_MAX] = {
 416         [UHSO_BULK_ENDPT_READ] = {
 417                 .type = UE_BULK,
 418                 .endpoint = UE_ADDR_ANY,
 419                 .direction = UE_DIR_IN,
 420                 .flags = { .pipe_bof = 1, .short_xfer_ok = 1 },
 421                 .bufsize = 4096,
 422                 .callback = &uhso_bs_read_callback
 423         },
 424
 425         [UHSO_BULK_ENDPT_WRITE] = {
 426                 .type = UE_BULK,
 427                 .endpoint = UE_ADDR_ANY,
 428                 .direction = UE_DIR_OUT,
 429                 .flags = { .pipe_bof = 1, .force_short_xfer = 1 },
 430                 .bufsize = 8192,
 431                 .callback = &uhso_bs_write_callback
 432         },
 433
 434         [UHSO_BULK_ENDPT_INTR] = {
 435                 .type = UE_INTERRUPT,
 436                 .endpoint = UE_ADDR_ANY,
 437                 .direction = UE_DIR_IN,
 438                 .flags = { .short_xfer_ok = 1 },
 439                 .bufsize = 0,
 440                 .callback = &uhso_bs_intr_callback,
 441         }
 442 };
 443
 444 static int  uhso_probe_iface(struct uhso_softc *, int,
 445     int (*probe)(struct usb_device *, int));
 446 static int  uhso_probe_iface_auto(struct usb_device *, int);
 447 static int  uhso_probe_iface_static(struct usb_device *, int);
 448 static int  uhso_attach_muxserial(struct uhso_softc *, struct usb_interface *,
 449     int type);
 450 static int  uhso_attach_bulkserial(struct uhso_softc *, struct usb_interface *,
 451     int type);
 452 static int  uhso_attach_ifnet(struct uhso_softc *, struct usb_interface *,
 453     int type);
 454 static void uhso_test_autoinst(void *, struct usb_device *,
 455                 struct usb_attach_arg *);
 456 static int  uhso_driver_loaded(struct module *, int, void *);
 457 static int uhso_radio_sysctl(SYSCTL_HANDLER_ARGS);
 458 static int uhso_radio_ctrl(struct uhso_softc *, int);
 459
 460 static void uhso_free(struct ucom_softc *);
 461 static void uhso_ucom_start_read(struct ucom_softc *);
 462 static void uhso_ucom_stop_read(struct ucom_softc *);
 463 static void uhso_ucom_start_write(struct ucom_softc *);
 464 static void uhso_ucom_stop_write(struct ucom_softc *);
 465 static void uhso_ucom_cfg_get_status(struct ucom_softc *, uint8_t *, uint8_t *);
 466 static void uhso_ucom_cfg_set_dtr(struct ucom_softc *, uint8_t);
 467 static void uhso_ucom_cfg_set_rts(struct ucom_softc *, uint8_t);
 468 static void uhso_if_init(void *);
 469 static void uhso_if_start(struct ifnet *);
 470 static void uhso_if_stop(struct uhso_softc *);
 471 static int  uhso_if_ioctl(struct ifnet *, u_long, caddr_t);
 472 static int  uhso_if_output(struct ifnet *, struct mbuf *, struct sockaddr *,
 473     struct route *);
 474 static void uhso_if_rxflush(void *);
 475
 476 static device_probe_t uhso_probe;
 477 static device_attach_t uhso_attach;
 478 static device_detach_t uhso_detach;
 479 static void uhso_free_softc(struct uhso_softc *);
 480
 481 static device_method_t uhso_methods[] = {
 482         DEVMETHOD(device_probe,         uhso_probe),
 483         DEVMETHOD(device_attach,        uhso_attach),
 484         DEVMETHOD(device_detach,        uhso_detach),
 485         { 0, 0 }
 486 };
 487
 488 static driver_t uhso_driver = {
 489         .name = "uhso",
 490         .methods = uhso_methods,
 491         .size = sizeof(struct uhso_softc)
 492 };
 493
 494 static devclass_t uhso_devclass;
 495 DRIVER_MODULE(uhso, uhub, uhso_driver, uhso_devclass, uhso_driver_loaded, 0);
 496 MODULE_DEPEND(uhso, ucom, 1, 1, 1);
 497 MODULE_DEPEND(uhso, usb, 1, 1, 1);
 498 MODULE_VERSION(uhso, 1);
 499
 500 static struct ucom_callback uhso_ucom_callback = {
 501         .ucom_cfg_get_status = &uhso_ucom_cfg_get_status,
 502         .ucom_cfg_set_dtr = &uhso_ucom_cfg_set_dtr,
 503         .ucom_cfg_set_rts = &uhso_ucom_cfg_set_rts,
 504         .ucom_start_read = uhso_ucom_start_read,
 505         .ucom_stop_read = uhso_ucom_stop_read,
 506         .ucom_start_write = uhso_ucom_start_write,
 507         .ucom_stop_write = uhso_ucom_stop_write,
 508         .ucom_free = &uhso_free,
 509 };
 510
 511 static int
 512 uhso_probe(device_t self)
 513 {
 514         struct usb_attach_arg *uaa = device_get_ivars(self);
 515         int error;
 516
 517         if (uaa->usb_mode != USB_MODE_HOST)
 518                 return (ENXIO);
 519         if (uaa->info.bConfigIndex != 0)
 520                 return (ENXIO);
 521         if (uaa->info.bDeviceClass != 0xff)
 522                 return (ENXIO);
 523
 524         error = usbd_lookup_id_by_uaa(uhso_devs, sizeof(uhso_devs), uaa);
 525         if (error != 0)
 526                 return (error);
 527
 528         /*
 529          * Probe device to see if we are able to attach
 530          * to this interface or not.
 531          */
 532         if (USB_GET_DRIVER_INFO(uaa) == UHSO_AUTO_IFACE) {
 533                 if (uhso_probe_iface_auto(uaa->device,
 534                     uaa->info.bIfaceNum) == 0)
 535                         return (ENXIO);
 536         }
 537         return (error);
 538 }
 539
 540 static int
 541 uhso_attach(device_t self)
 542 {
 543         struct uhso_softc *sc = device_get_softc(self);
 544         struct usb_attach_arg *uaa = device_get_ivars(self);
 545         struct usb_interface_descriptor *id;
 546         struct sysctl_ctx_list *sctx;
 547         struct sysctl_oid *soid;
 548         struct sysctl_oid *tree = NULL, *tty_node;
 549         struct ucom_softc *ucom;
 550         struct uhso_tty *ht;
 551         int i, error, port;
 552         void *probe_f;
 553         usb_error_t uerr;
 554         char *desc;
 555
 556         sc->sc_dev = self;
 557         sc->sc_udev = uaa->device;
 558         mtx_init(&sc->sc_mtx, "uhso", NULL, MTX_DEF);
 559         ucom_ref(&sc->sc_super_ucom);
 560
 561         sc->sc_radio = 1;
 562
 563         id = usbd_get_interface_descriptor(uaa->iface);
 564         sc->sc_ctrl_iface_no = id->bInterfaceNumber;
 565
 566         sc->sc_iface_no = uaa->info.bIfaceNum;
 567         sc->sc_iface_index = uaa->info.bIfaceIndex;
 568
 569         /* Setup control pipe */
 570         uerr = usbd_transfer_setup(uaa->device,
 571             &sc->sc_iface_index, sc->sc_ctrl_xfer,
 572             uhso_ctrl_config, UHSO_CTRL_MAX, sc, &sc->sc_mtx);
 573         if (uerr) {
 574                 device_printf(self, "Failed to setup control pipe: %s\n",
 575                     usbd_errstr(uerr));
 576                 goto out;
 577         }
 578
 579         if (USB_GET_DRIVER_INFO(uaa) == UHSO_STATIC_IFACE)
 580                 probe_f = uhso_probe_iface_static;
 581         else if (USB_GET_DRIVER_INFO(uaa) == UHSO_AUTO_IFACE)
 582                 probe_f = uhso_probe_iface_auto;
 583         else
 584                 goto out;
 585
 586         error = uhso_probe_iface(sc, uaa->info.bIfaceNum, probe_f);
 587         if (error != 0)
 588                 goto out;
 589
 590         sctx = device_get_sysctl_ctx(sc->sc_dev);
 591         soid = device_get_sysctl_tree(sc->sc_dev);
 592
 593         SYSCTL_ADD_STRING(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "type",
 594             CTLFLAG_RD, uhso_port[UHSO_IFACE_PORT(sc->sc_type)], 0,
 595             "Port available at this interface");
 596         SYSCTL_ADD_PROC(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "radio",
 597             CTLTYPE_INT | CTLFLAG_RW, sc, 0, uhso_radio_sysctl, "I", "Enable radio");
 598
 599         /*
 600          * The default interface description on most Option devices isn't
 601          * very helpful. So we skip device_set_usb_desc and set the
 602          * device description manually.
 603          */
 604         device_set_desc_copy(self, uhso_port_type[UHSO_IFACE_PORT_TYPE(sc->sc_type)]);
 605         /* Announce device */
 606         device_printf(self, "<%s port> at <%s %s> on %s\n",
 607             uhso_port_type[UHSO_IFACE_PORT_TYPE(sc->sc_type)],
 608             usb_get_manufacturer(uaa->device),
 609             usb_get_product(uaa->device),
 610             device_get_nameunit(device_get_parent(self)));
 611
 612         if (sc->sc_ttys > 0) {
 613                 SYSCTL_ADD_INT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "ports",
 614                     CTLFLAG_RD, &sc->sc_ttys, 0, "Number of attached serial ports");
 615
 616                 tree = SYSCTL_ADD_NODE(sctx, SYSCTL_CHILDREN(soid), OID_AUTO,
 617                     "port", CTLFLAG_RD, NULL, "Serial ports");
 618         }
 619
 620         /*
 621          * Loop through the number of found TTYs and create sysctl
 622          * nodes for them.
 623          */
 624         for (i = 0; i < sc->sc_ttys; i++) {
 625                 ht = &sc->sc_tty[i];
 626                 ucom = &sc->sc_ucom[i];
 627
 628                 if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_MUX)
 629                         port = uhso_mux_port_map[ht->ht_muxport];
 630                 else
 631                         port = UHSO_IFACE_PORT_TYPE(sc->sc_type);
 632
 633                 desc = uhso_port_type_sysctl[port];
 634
 635                 tty_node = SYSCTL_ADD_NODE(sctx, SYSCTL_CHILDREN(tree), OID_AUTO,
 636                     desc, CTLFLAG_RD, NULL, "");
 637
 638                 ht->ht_name[0] = 0;
 639                 if (sc->sc_ttys == 1)
 640                         snprintf(ht->ht_name, 32, "cuaU%d", ucom->sc_super->sc_unit);
 641                 else {
 642                         snprintf(ht->ht_name, 32, "cuaU%d.%d",
 643                             ucom->sc_super->sc_unit, ucom->sc_subunit);
 644                 }
 645
 646                 desc = uhso_port_type[port];
 647                 SYSCTL_ADD_STRING(sctx, SYSCTL_CHILDREN(tty_node), OID_AUTO,
 648                     "tty", CTLFLAG_RD, ht->ht_name, 0, "");
 649                 SYSCTL_ADD_STRING(sctx, SYSCTL_CHILDREN(tty_node), OID_AUTO,
 650                     "desc", CTLFLAG_RD, desc, 0, "");
 651
 652                 if (bootverbose)
 653                         device_printf(sc->sc_dev,
 654                             "\"%s\" port at %s\n", desc, ht->ht_name);
 655         }
 656
 657         return (0);
 658 out:
 659         uhso_detach(sc->sc_dev);
 660         return (ENXIO);
 661 }
 662
 663 static int
 664 uhso_detach(device_t self)
 665 {
 666         struct uhso_softc *sc = device_get_softc(self);
 667         int i;
 668
 669         usbd_transfer_unsetup(sc->sc_xfer, 3);
 670         usbd_transfer_unsetup(sc->sc_ctrl_xfer, UHSO_CTRL_MAX);
 671         if (sc->sc_ttys > 0) {
 672                 ucom_detach(&sc->sc_super_ucom, sc->sc_ucom);
 673
 674                 for (i = 0; i < sc->sc_ttys; i++) {
 675                         if (sc->sc_tty[i].ht_muxport != -1) {
 676                                 usbd_transfer_unsetup(sc->sc_tty[i].ht_xfer,
 677                                     UHSO_CTRL_MAX);
 678                         }
 679                 }
 680         }
 681
 682         if (sc->sc_ifp != NULL) {
 683                 callout_drain(&sc->sc_c);
 684                 free_unr(uhso_ifnet_unit, sc->sc_ifp->if_dunit);
 685                 mtx_lock(&sc->sc_mtx);
 686                 uhso_if_stop(sc);
 687                 bpfdetach(sc->sc_ifp);
 688                 if_detach(sc->sc_ifp);
 689                 if_free(sc->sc_ifp);
 690                 mtx_unlock(&sc->sc_mtx);
 691                 usbd_transfer_unsetup(sc->sc_if_xfer, UHSO_IFNET_MAX);
 692         }
 693
 694         device_claim_softc(self);
 695
 696         uhso_free_softc(sc);
 697
 698         return (0);
 699 }
 700
 701 UCOM_UNLOAD_DRAIN(uhso);
 702
 703 static void
 704 uhso_free_softc(struct uhso_softc *sc)
 705 {
 706         if (ucom_unref(&sc->sc_super_ucom)) {
 707                 free(sc->sc_tty, M_USBDEV);
 708                 free(sc->sc_ucom, M_USBDEV);
 709                 mtx_destroy(&sc->sc_mtx);
 710                 device_free_softc(sc);
 711         }
 712 }
 713
 714 static void
 715 uhso_free(struct ucom_softc *ucom)
 716 {
 717         uhso_free_softc(ucom->sc_parent);
 718 }
 719
 720 static void
 721 uhso_test_autoinst(void *arg, struct usb_device *udev,
 722     struct usb_attach_arg *uaa)
 723 {
 724         struct usb_interface *iface;
 725         struct usb_interface_descriptor *id;
 726
 727         if (uaa->dev_state != UAA_DEV_READY || !uhso_autoswitch)
 728                 return;
 729
 730         iface = usbd_get_iface(udev, 0);
 731         if (iface == NULL)
 732                 return;
 733         id = iface->idesc;
 734         if (id == NULL || id->bInterfaceClass != UICLASS_MASS)
 735                 return;
 736         if (usbd_lookup_id_by_uaa(uhso_devs, sizeof(uhso_devs), uaa))
 737                 return;         /* no device match */
 738
 739         if (usb_msc_eject(udev, 0, MSC_EJECT_REZERO) == 0) {
 740                 /* success, mark the udev as disappearing */
 741                 uaa->dev_state = UAA_DEV_EJECTING;
 742         }
 743 }
 744
 745 static int
 746 uhso_driver_loaded(struct module *mod, int what, void *arg)
 747 {
 748         switch (what) {
 749         case MOD_LOAD:
 750                 /* register our autoinstall handler */
 751                 uhso_etag = EVENTHANDLER_REGISTER(usb_dev_configured,
 752                     uhso_test_autoinst, NULL, EVENTHANDLER_PRI_ANY);
 753                 /* create our unit allocator for inet devs */
 754                 uhso_ifnet_unit = new_unrhdr(0, INT_MAX, NULL);
 755                 break;
 756         case MOD_UNLOAD:
 757                 EVENTHANDLER_DEREGISTER(usb_dev_configured, uhso_etag);
 758                 delete_unrhdr(uhso_ifnet_unit);
 759                 break;
 760         default:
 761                 return (EOPNOTSUPP);
 762         }
 763         return (0);
 764 }
 765
 766 /*
 767  * Probe the interface type by querying the device. The elements
 768  * of an array indicates the capabilities of a particular interface.
 769  * Returns a bit mask with the interface capabilities.
 770  */
 771 static int
 772 uhso_probe_iface_auto(struct usb_device *udev, int index)
 773 {
 774         struct usb_device_request req;
 775         usb_error_t uerr;
 776         uint16_t actlen = 0;
 777         char port;
 778         char buf[17] = {0};
 779
 780         req.bmRequestType = UT_READ_VENDOR_DEVICE;
 781         req.bRequest = 0x86;
 782         USETW(req.wValue, 0);
 783         USETW(req.wIndex, 0);
 784         USETW(req.wLength, 17);
 785
 786         uerr = usbd_do_request_flags(udev, NULL, &req, buf,
 787             0, &actlen, USB_MS_HZ);
 788         if (uerr != 0) {
 789                 printf("%s: usbd_do_request_flags failed, %s\n",
 790                     __func__, usbd_errstr(uerr));
 791                 return (0);
 792         }
 793
 794         UHSO_DPRINTF(1, "actlen=%d\n", actlen);
 795         UHSO_HEXDUMP(buf, 17);
 796
 797         if (index < 0 || index > 16) {
 798                 UHSO_DPRINTF(0, "Index %d out of range\n", index);
 799                 return (0);
 800         }
 801
 802         UHSO_DPRINTF(1, "index=%d, type=%x[%s]\n", index, buf[index],
 803             uhso_port_type[(int)uhso_port_map[(int)buf[index]]]);
 804
 805         if (buf[index] >= uhso_port_map_max)
 806                 port = 0;
 807         else
 808                 port = uhso_port_map[(int)buf[index]];
 809
 810         switch (port) {
 811         case UHSO_PORT_TYPE_NETWORK:
 812                 return (UHSO_IFACE_SPEC(UHSO_IF_NET | UHSO_IF_MUX,
 813                     UHSO_PORT_SERIAL | UHSO_PORT_NETWORK, port));
 814         case UHSO_PORT_TYPE_DIAG:
 815         case UHSO_PORT_TYPE_DIAG2:
 816         case UHSO_PORT_TYPE_GPS:
 817         case UHSO_PORT_TYPE_GPSCTL:
 818         case UHSO_PORT_TYPE_CTL:
 819         case UHSO_PORT_TYPE_APP:
 820         case UHSO_PORT_TYPE_APP2:
 821         case UHSO_PORT_TYPE_MODEM:
 822                 return (UHSO_IFACE_SPEC(UHSO_IF_BULK,
 823                     UHSO_PORT_SERIAL, port));
 824         case UHSO_PORT_TYPE_MSD:
 825                 return (0);
 826         case UHSO_PORT_TYPE_UNKNOWN:
 827         default:
 828                 return (0);
 829         }
 830
 831         return (0);
 832 }
 833
 834 /*
 835  * Returns the capabilities of interfaces for devices that don't
 836  * support the automatic query.
 837  * Returns a bit mask with the interface capabilities.
 838  */
 839 static int
 840 uhso_probe_iface_static(struct usb_device *udev, int index)
 841 {
 842         struct usb_config_descriptor *cd;
 843
 844         cd = usbd_get_config_descriptor(udev);
 845         if (cd->bNumInterface <= 3) {
 846                 /* Cards with 3 or less interfaces */
 847                 switch (index) {
 848                 case 0:
 849                         return UHSO_IFACE_SPEC(UHSO_IF_NET | UHSO_IF_MUX,
 850                             UHSO_PORT_SERIAL | UHSO_PORT_NETWORK,
 851                             UHSO_PORT_TYPE_NETWORK);
 852                 case 1:
 853                         return UHSO_IFACE_SPEC(UHSO_IF_BULK,
 854                             UHSO_PORT_SERIAL, UHSO_PORT_TYPE_DIAG);
 855                 case 2:
 856                         return UHSO_IFACE_SPEC(UHSO_IF_BULK,
 857                             UHSO_PORT_SERIAL, UHSO_PORT_TYPE_MODEM);
 858                 }
 859         } else {
 860                 /* Cards with 4 interfaces */
 861                 switch (index) {
 862                 case 0:
 863                         return UHSO_IFACE_SPEC(UHSO_IF_NET | UHSO_IF_MUX,
 864                             UHSO_PORT_SERIAL | UHSO_PORT_NETWORK,
 865                             UHSO_PORT_TYPE_NETWORK);
 866                 case 1:
 867                         return UHSO_IFACE_SPEC(UHSO_IF_BULK,
 868                             UHSO_PORT_SERIAL, UHSO_PORT_TYPE_DIAG2);
 869                 case 2:
 870                         return UHSO_IFACE_SPEC(UHSO_IF_BULK,
 871                             UHSO_PORT_SERIAL, UHSO_PORT_TYPE_MODEM);
 872                 case 3:
 873                         return UHSO_IFACE_SPEC(UHSO_IF_BULK,
 874                             UHSO_PORT_SERIAL, UHSO_PORT_TYPE_DIAG);
 875                 }
 876         }
 877         return (0);
 878 }
 879
 880 /*
 881  * Probes an interface for its particular capabilities and attaches if
 882  * it's a supported interface.
 883  */
 884 static int
 885 uhso_probe_iface(struct uhso_softc *sc, int index,
 886     int (*probe)(struct usb_device *, int))
 887 {
 888         struct usb_interface *iface;
 889         int type, error;
 890
 891         UHSO_DPRINTF(1, "Probing for interface %d, probe_func=%p\n", index, probe);
 892
 893         type = probe(sc->sc_udev, index);
 894         UHSO_DPRINTF(1, "Probe result %x\n", type);
 895         if (type <= 0)
 896                 return (ENXIO);
 897
 898         sc->sc_type = type;
 899         iface = usbd_get_iface(sc->sc_udev, index);
 900
 901         if (UHSO_IFACE_PORT_TYPE(type) == UHSO_PORT_TYPE_NETWORK) {
 902                 error = uhso_attach_ifnet(sc, iface, type);
 903                 if (error) {
 904                         UHSO_DPRINTF(1, "uhso_attach_ifnet failed");
 905                         return (ENXIO);
 906                 }
 907
 908                 /*
 909                  * If there is an additional interrupt endpoint on this
 910                  * interface then we most likely have a multiplexed serial port
 911                  * available.
 912                  */
 913                 if (iface->idesc->bNumEndpoints < 3) {
 914                         sc->sc_type = UHSO_IFACE_SPEC(
 915                             UHSO_IFACE_USB_TYPE(type) & ~UHSO_IF_MUX,
 916                             UHSO_IFACE_PORT(type) & ~UHSO_PORT_SERIAL,
 917                             UHSO_IFACE_PORT_TYPE(type));
 918                         return (0);
 919                 }
 920
 921                 UHSO_DPRINTF(1, "Trying to attach mux. serial\n");
 922                 error = uhso_attach_muxserial(sc, iface, type);
 923                 if (error == 0 && sc->sc_ttys > 0) {
 924                         error = ucom_attach(&sc->sc_super_ucom, sc->sc_ucom,
 925                             sc->sc_ttys, sc, &uhso_ucom_callback, &sc->sc_mtx);
 926                         if (error) {
 927                                 device_printf(sc->sc_dev, "ucom_attach failed\n");
 928                                 return (ENXIO);
 929                         }
 930                         ucom_set_pnpinfo_usb(&sc->sc_super_ucom, sc->sc_dev);
 931
 932                         mtx_lock(&sc->sc_mtx);
 933                         usbd_transfer_start(sc->sc_xfer[UHSO_MUX_ENDPT_INTR]);
 934                         mtx_unlock(&sc->sc_mtx);
 935                 }
 936         } else if ((UHSO_IFACE_USB_TYPE(type) & UHSO_IF_BULK) &&
 937             UHSO_IFACE_PORT(type) & UHSO_PORT_SERIAL) {
 938
 939                 error = uhso_attach_bulkserial(sc, iface, type);
 940                 if (error)
 941                         return (ENXIO);
 942
 943                 error = ucom_attach(&sc->sc_super_ucom, sc->sc_ucom,
 944                     sc->sc_ttys, sc, &uhso_ucom_callback, &sc->sc_mtx);
 945                 if (error) {
 946                         device_printf(sc->sc_dev, "ucom_attach failed\n");
 947                         return (ENXIO);
 948                 }
 949                 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, sc->sc_dev);
 950         }
 951         else {
 952                 UHSO_DPRINTF(0, "Unknown type %x\n", type);
 953                 return (ENXIO);
 954         }
 955
 956         return (0);
 957 }
 958
 959 static int
 960 uhso_radio_ctrl(struct uhso_softc *sc, int onoff)
 961 {
 962         struct usb_device_request req;
 963         usb_error_t uerr;
 964
 965         req.bmRequestType = UT_VENDOR;
 966         req.bRequest = onoff ? 0x82 : 0x81;
 967         USETW(req.wValue, 0);
 968         USETW(req.wIndex, 0);
 969         USETW(req.wLength, 0);
 970
 971         uerr = usbd_do_request(sc->sc_udev, NULL, &req, NULL);
 972         if (uerr != 0) {
 973                 device_printf(sc->sc_dev, "usbd_do_request_flags failed: %s\n",
 974                     usbd_errstr(uerr));
 975                 return (-1);
 976         }
 977         return (onoff);
 978 }
 979
 980 static int
 981 uhso_radio_sysctl(SYSCTL_HANDLER_ARGS)
 982 {
 983         struct uhso_softc *sc = arg1;
 984         int error, radio;
 985
 986         radio = sc->sc_radio;
 987         error = sysctl_handle_int(oidp, &radio, 0, req);
 988         if (error)
 989                 return (error);
 990         if (radio != sc->sc_radio) {
 991                 radio = radio != 0 ? 1 : 0;
 992                 error = uhso_radio_ctrl(sc, radio);
 993                 if (error != -1)
 994                         sc->sc_radio = radio;
 995
 996         }
 997         return (0);
 998 }
 999
1000 /*
1001  * Expands allocated memory to fit an additional TTY.
1002  * Two arrays are kept with matching indexes, one for ucom and one
1003  * for our private data.
1004  */
1005 static int
1006 uhso_alloc_tty(struct uhso_softc *sc)
1007 {
1008
1009         sc->sc_ttys++;
1010         sc->sc_tty = reallocf(sc->sc_tty, sizeof(struct uhso_tty) * sc->sc_ttys,
1011             M_USBDEV, M_WAITOK | M_ZERO);
1012         if (sc->sc_tty == NULL)
1013                 return (-1);
1014
1015         sc->sc_ucom = reallocf(sc->sc_ucom,
1016             sizeof(struct ucom_softc) * sc->sc_ttys, M_USBDEV, M_WAITOK | M_ZERO);
1017         if (sc->sc_ucom == NULL)
1018                 return (-1);
1019
1020         sc->sc_tty[sc->sc_ttys - 1].ht_sc = sc;
1021
1022         UHSO_DPRINTF(1, "Allocated TTY %d\n", sc->sc_ttys - 1);
1023         return (sc->sc_ttys - 1);
1024 }
1025
1026 /*
1027  * Attach a multiplexed serial port
1028  * Data is read/written with requests on the default control pipe. An interrupt
1029  * endpoint returns when there is new data to be read.
1030  */
1031 static int
1032 uhso_attach_muxserial(struct uhso_softc *sc, struct usb_interface *iface,
1033     int type)
1034 {
1035         struct usb_descriptor *desc;
1036         int i, port, tty;
1037         usb_error_t uerr;
1038
1039         /*
1040          * The class specific interface (type 0x24) descriptor subtype field
1041          * contains a bitmask that specifies which (and how many) ports that
1042          * are available through this multiplexed serial port.
1043          */
1044         desc = usbd_find_descriptor(sc->sc_udev, NULL,
1045             iface->idesc->bInterfaceNumber, UDESC_CS_INTERFACE, 0xff, 0, 0);
1046         if (desc == NULL) {
1047                 UHSO_DPRINTF(0, "Failed to find UDESC_CS_INTERFACE\n");
1048                 return (ENXIO);
1049         }
1050
1051         UHSO_DPRINTF(1, "Mux port mask %x\n", desc->bDescriptorSubtype);
1052         if (desc->bDescriptorSubtype == 0)
1053                 return (ENXIO);
1054
1055         /*
1056          * The bitmask is one octet, loop through the number of
1057          * bits that are set and create a TTY for each.
1058          */
1059         for (i = 0; i < 8; i++) {
1060                 port = (1 << i);
1061                 if ((port & desc->bDescriptorSubtype) == port) {
1062                         UHSO_DPRINTF(2, "Found mux port %x (%d)\n", port, i);
1063                         tty = uhso_alloc_tty(sc);
1064                         if (tty < 0)
1065                                 return (ENOMEM);
1066                         sc->sc_tty[tty].ht_muxport = i;
1067                         uerr = usbd_transfer_setup(sc->sc_udev,
1068                             &sc->sc_iface_index, sc->sc_tty[tty].ht_xfer,
1069                             uhso_ctrl_config, UHSO_CTRL_MAX, sc, &sc->sc_mtx);
1070                         if (uerr) {
1071                                 device_printf(sc->sc_dev,
1072                                     "Failed to setup control pipe: %s\n",
1073                                     usbd_errstr(uerr));
1074                                 return (ENXIO);
1075                         }
1076                 }
1077         }
1078
1079         /* Setup the intr. endpoint */
1080         uerr = usbd_transfer_setup(sc->sc_udev,
1081             &iface->idesc->bInterfaceNumber, sc->sc_xfer,
1082             uhso_mux_config, 1, sc, &sc->sc_mtx);
1083         if (uerr)
1084                 return (ENXIO);
1085
1086         return (0);
1087 }
1088
1089 /*
1090  * Interrupt callback for the multiplexed serial port. Indicates
1091  * which serial port has data waiting.
1092  */
1093 static void
1094 uhso_mux_intr_callback(struct usb_xfer *xfer, usb_error_t error)
1095 {
1096         struct usb_page_cache *pc;
1097         struct usb_page_search res;
1098         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1099         unsigned int i, mux;
1100
1101         UHSO_DPRINTF(3, "status %d\n", USB_GET_STATE(xfer));
1102
1103         switch (USB_GET_STATE(xfer)) {
1104         case USB_ST_TRANSFERRED:
1105                 /*
1106                  * The multiplexed port number can be found at the first byte.
1107                  * It contains a bit mask, we transform this in to an integer.
1108                  */
1109                 pc = usbd_xfer_get_frame(xfer, 0);
1110                 usbd_get_page(pc, 0, &res);
1111
1112                 i = *((unsigned char *)res.buffer);
1113                 mux = 0;
1114                 while (i >>= 1) {
1115                         mux++;
1116                 }
1117
1118                 UHSO_DPRINTF(3, "mux port %d (%d)\n", mux, i);
1119                 if (mux > UHSO_MPORT_TYPE_NOMAX)
1120                         break;
1121
1122                 /* Issue a read for this serial port */
1123                 usbd_xfer_set_priv(
1124                     sc->sc_tty[mux].ht_xfer[UHSO_CTRL_READ],
1125                     &sc->sc_tty[mux]);
1126                 usbd_transfer_start(sc->sc_tty[mux].ht_xfer[UHSO_CTRL_READ]);
1127
1128                 break;
1129         case USB_ST_SETUP:
1130 tr_setup:
1131                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
1132                 usbd_transfer_submit(xfer);
1133                 break;
1134         default:
1135                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1136                 if (error == USB_ERR_CANCELLED)
1137                         break;
1138
1139                 usbd_xfer_set_stall(xfer);
1140                 goto tr_setup;
1141         }
1142 }
1143
1144 static void
1145 uhso_mux_read_callback(struct usb_xfer *xfer, usb_error_t error)
1146 {
1147         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1148         struct usb_page_cache *pc;
1149         struct usb_device_request req;
1150         struct uhso_tty *ht;
1151         int actlen, len;
1152
1153         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1154
1155         UHSO_DPRINTF(3, "status %d\n", USB_GET_STATE(xfer));
1156
1157         ht = usbd_xfer_get_priv(xfer);
1158         UHSO_DPRINTF(3, "ht=%p open=%d\n", ht, ht->ht_open);
1159
1160         switch (USB_GET_STATE(xfer)) {
1161         case USB_ST_TRANSFERRED:
1162                 /* Got data, send to ucom */
1163                 pc = usbd_xfer_get_frame(xfer, 1);
1164                 len = usbd_xfer_frame_len(xfer, 1);
1165
1166                 UHSO_DPRINTF(3, "got %d bytes on mux port %d\n", len,
1167                     ht->ht_muxport);
1168                 if (len <= 0) {
1169                         usbd_transfer_start(sc->sc_xfer[UHSO_MUX_ENDPT_INTR]);
1170                         break;
1171                 }
1172
1173                 /* Deliver data if the TTY is open, discard otherwise */
1174                 if (ht->ht_open)
1175                         ucom_put_data(&sc->sc_ucom[ht->ht_muxport], pc, 0, len);
1176                 /* FALLTHROUGH */
1177         case USB_ST_SETUP:
1178 tr_setup:
1179                 memset(&req, 0, sizeof(struct usb_device_request));
1180                 req.bmRequestType = UT_READ_CLASS_INTERFACE;
1181                 req.bRequest = UCDC_GET_ENCAPSULATED_RESPONSE;
1182                 USETW(req.wValue, 0);
1183                 USETW(req.wIndex, ht->ht_muxport);
1184                 USETW(req.wLength, 1024);
1185
1186                 pc = usbd_xfer_get_frame(xfer, 0);
1187                 usbd_copy_in(pc, 0, &req, sizeof(req));
1188
1189                 usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
1190                 usbd_xfer_set_frame_len(xfer, 1, 1024);
1191                 usbd_xfer_set_frames(xfer, 2);
1192                 usbd_transfer_submit(xfer);
1193                 break;
1194         default:
1195                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1196                 if (error == USB_ERR_CANCELLED)
1197                         break;
1198                 usbd_xfer_set_stall(xfer);
1199                 goto tr_setup;
1200         }
1201 }
1202
1203 static void
1204 uhso_mux_write_callback(struct usb_xfer *xfer, usb_error_t error)
1205 {
1206         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1207         struct uhso_tty *ht;
1208         struct usb_page_cache *pc;
1209         struct usb_device_request req;
1210         int actlen;
1211         struct usb_page_search res;
1212
1213         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1214
1215         ht = usbd_xfer_get_priv(xfer);
1216         UHSO_DPRINTF(3, "status=%d, using mux port %d\n",
1217             USB_GET_STATE(xfer), ht->ht_muxport);
1218
1219         switch (USB_GET_STATE(xfer)) {
1220         case USB_ST_TRANSFERRED:
1221                 UHSO_DPRINTF(3, "wrote %zd data bytes to muxport %d\n",
1222                     actlen - sizeof(struct usb_device_request) ,
1223                     ht->ht_muxport);
1224                 /* FALLTHROUGH */
1225         case USB_ST_SETUP:
1226                 pc = usbd_xfer_get_frame(xfer, 1);
1227                 if (ucom_get_data(&sc->sc_ucom[ht->ht_muxport], pc,
1228                     0, 32, &actlen)) {
1229
1230                         usbd_get_page(pc, 0, &res);
1231
1232                         memset(&req, 0, sizeof(struct usb_device_request));
1233                         req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
1234                         req.bRequest = UCDC_SEND_ENCAPSULATED_COMMAND;
1235                         USETW(req.wValue, 0);
1236                         USETW(req.wIndex, ht->ht_muxport);
1237                         USETW(req.wLength, actlen);
1238
1239                         pc = usbd_xfer_get_frame(xfer, 0);
1240                         usbd_copy_in(pc, 0, &req, sizeof(req));
1241
1242                         usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
1243                         usbd_xfer_set_frame_len(xfer, 1, actlen);
1244                         usbd_xfer_set_frames(xfer, 2);
1245
1246                         UHSO_DPRINTF(3, "Prepared %d bytes for transmit "
1247                             "on muxport %d\n", actlen, ht->ht_muxport);
1248
1249                         usbd_transfer_submit(xfer);
1250                 }
1251                 break;
1252         default:
1253                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1254                 if (error == USB_ERR_CANCELLED)
1255                         break;
1256                 break;
1257         }
1258 }
1259
1260 static int
1261 uhso_attach_bulkserial(struct uhso_softc *sc, struct usb_interface *iface,
1262     int type)
1263 {
1264         usb_error_t uerr;
1265         int tty;
1266
1267         /* Try attaching RD/WR/INTR first */
1268         uerr = usbd_transfer_setup(sc->sc_udev,
1269             &iface->idesc->bInterfaceNumber, sc->sc_xfer,
1270             uhso_bs_config, UHSO_BULK_ENDPT_MAX, sc, &sc->sc_mtx);
1271         if (uerr) {
1272                 /* Try only RD/WR */
1273                 uerr = usbd_transfer_setup(sc->sc_udev,
1274                     &iface->idesc->bInterfaceNumber, sc->sc_xfer,
1275                     uhso_bs_config, UHSO_BULK_ENDPT_MAX - 1, sc, &sc->sc_mtx);
1276         }
1277         if (uerr) {
1278                 UHSO_DPRINTF(0, "usbd_transfer_setup failed");
1279                 return (-1);
1280         }
1281
1282         tty = uhso_alloc_tty(sc);
1283         if (tty < 0) {
1284                 usbd_transfer_unsetup(sc->sc_xfer, UHSO_BULK_ENDPT_MAX);
1285                 return (ENOMEM);
1286         }
1287
1288         sc->sc_tty[tty].ht_muxport = -1;
1289         return (0);
1290 }
1291
1292 static void
1293 uhso_bs_read_callback(struct usb_xfer *xfer, usb_error_t error)
1294 {
1295         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1296         struct usb_page_cache *pc;
1297         int actlen;
1298
1299         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1300
1301         UHSO_DPRINTF(3, "status %d, actlen=%d\n", USB_GET_STATE(xfer), actlen);
1302
1303         switch (USB_GET_STATE(xfer)) {
1304         case USB_ST_TRANSFERRED:
1305                 pc = usbd_xfer_get_frame(xfer, 0);
1306                 ucom_put_data(&sc->sc_ucom[0], pc, 0, actlen);
1307                 /* FALLTHROUGH */
1308         case USB_ST_SETUP:
1309 tr_setup:
1310                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
1311                 usbd_transfer_submit(xfer);
1312         break;
1313         default:
1314                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1315                 if (error == USB_ERR_CANCELLED)
1316                         break;
1317                 usbd_xfer_set_stall(xfer);
1318                 goto tr_setup;
1319         }
1320 }
1321
1322 static void
1323 uhso_bs_write_callback(struct usb_xfer *xfer, usb_error_t error)
1324 {
1325         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1326         struct usb_page_cache *pc;
1327         int actlen;
1328
1329         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1330
1331         UHSO_DPRINTF(3, "status %d, actlen=%d\n", USB_GET_STATE(xfer), actlen);
1332
1333         switch (USB_GET_STATE(xfer)) {
1334         case USB_ST_TRANSFERRED:
1335         case USB_ST_SETUP:
1336 tr_setup:
1337                 pc = usbd_xfer_get_frame(xfer, 0);
1338                 if (ucom_get_data(&sc->sc_ucom[0], pc, 0, 8192, &actlen)) {
1339                         usbd_xfer_set_frame_len(xfer, 0, actlen);
1340                         usbd_transfer_submit(xfer);
1341                 }
1342                 break;
1343         break;
1344         default:
1345                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1346                 if (error == USB_ERR_CANCELLED)
1347                         break;
1348                 usbd_xfer_set_stall(xfer);
1349                 goto tr_setup;
1350         }
1351 }
1352
1353 static void
1354 uhso_bs_cfg(struct uhso_softc *sc)
1355 {
1356         struct usb_device_request req;
1357         usb_error_t uerr;
1358
1359         if (!(UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK))
1360                 return;
1361
1362         req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
1363         req.bRequest = UCDC_SET_CONTROL_LINE_STATE;
1364         USETW(req.wValue, sc->sc_line);
1365         USETW(req.wIndex, sc->sc_iface_no);
1366         USETW(req.wLength, 0);
1367
1368         uerr = ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom[0], &req, NULL, 0, 1000);
1369         if (uerr != 0) {
1370                 device_printf(sc->sc_dev, "failed to set ctrl line state to "
1371                     "0x%02x: %s\n", sc->sc_line, usbd_errstr(uerr));
1372         }
1373 }
1374
1375 static void
1376 uhso_bs_intr_callback(struct usb_xfer *xfer, usb_error_t error)
1377 {
1378         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1379         struct usb_page_cache *pc;
1380         int actlen;
1381         struct usb_cdc_notification cdc;
1382
1383         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1384         UHSO_DPRINTF(3, "status %d, actlen=%d\n", USB_GET_STATE(xfer), actlen);
1385
1386         switch (USB_GET_STATE(xfer)) {
1387         case USB_ST_TRANSFERRED:
1388                 if (actlen < UCDC_NOTIFICATION_LENGTH) {
1389                         UHSO_DPRINTF(0, "UCDC notification too short: %d\n", actlen);
1390                         goto tr_setup;
1391                 }
1392                 else if (actlen > (int)sizeof(struct usb_cdc_notification)) {
1393                         UHSO_DPRINTF(0, "UCDC notification too large: %d\n", actlen);
1394                         actlen = sizeof(struct usb_cdc_notification);
1395                 }
1396
1397                 pc = usbd_xfer_get_frame(xfer, 0);
1398                 usbd_copy_out(pc, 0, &cdc, actlen);
1399
1400                 if (UGETW(cdc.wIndex) != sc->sc_iface_no) {
1401                         UHSO_DPRINTF(0, "Interface mismatch, got %d expected %d\n",
1402                             UGETW(cdc.wIndex), sc->sc_iface_no);
1403                         goto tr_setup;
1404                 }
1405
1406                 if (cdc.bmRequestType == UCDC_NOTIFICATION &&
1407                     cdc.bNotification == UCDC_N_SERIAL_STATE) {
1408                         UHSO_DPRINTF(2, "notify = 0x%02x\n", cdc.data[0]);
1409
1410                         sc->sc_msr = 0;
1411                         sc->sc_lsr = 0;
1412                         if (cdc.data[0] & UCDC_N_SERIAL_RI)
1413                                 sc->sc_msr |= SER_RI;
1414                         if (cdc.data[0] & UCDC_N_SERIAL_DSR)
1415                                 sc->sc_msr |= SER_DSR;
1416                         if (cdc.data[0] & UCDC_N_SERIAL_DCD)
1417                                 sc->sc_msr |= SER_DCD;
1418
1419                         ucom_status_change(&sc->sc_ucom[0]);
1420                 }
1421         case USB_ST_SETUP:
1422 tr_setup:
1423         default:
1424                 if (error == USB_ERR_CANCELLED)
1425                         break;
1426                 usbd_xfer_set_stall(xfer);
1427                 goto tr_setup;
1428         }
1429 }
1430
1431 static void
1432 uhso_ucom_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
1433 {
1434         struct uhso_softc *sc = ucom->sc_parent;
1435
1436         *lsr = sc->sc_lsr;
1437         *msr = sc->sc_msr;
1438 }
1439
1440 static void
1441 uhso_ucom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
1442 {
1443         struct uhso_softc *sc = ucom->sc_parent;
1444
1445         if (!(UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK))
1446                 return;
1447
1448         if (onoff)
1449                 sc->sc_line |= UCDC_LINE_DTR;
1450         else
1451                 sc->sc_line &= ~UCDC_LINE_DTR;
1452
1453         uhso_bs_cfg(sc);
1454 }
1455
1456 static void
1457 uhso_ucom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
1458 {
1459         struct uhso_softc *sc = ucom->sc_parent;
1460
1461         if (!(UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK))
1462                 return;
1463
1464         if (onoff)
1465                 sc->sc_line |= UCDC_LINE_RTS;
1466         else
1467                 sc->sc_line &= ~UCDC_LINE_RTS;
1468
1469         uhso_bs_cfg(sc);
1470 }
1471
1472 static void
1473 uhso_ucom_start_read(struct ucom_softc *ucom)
1474 {
1475         struct uhso_softc *sc = ucom->sc_parent;
1476
1477         UHSO_DPRINTF(3, "unit=%d, subunit=%d\n",
1478             ucom->sc_super->sc_unit, ucom->sc_subunit);
1479
1480         if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_MUX) {
1481                 sc->sc_tty[ucom->sc_subunit].ht_open = 1;
1482                 usbd_transfer_start(sc->sc_xfer[UHSO_MUX_ENDPT_INTR]);
1483         }
1484         else if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK) {
1485                 sc->sc_tty[0].ht_open = 1;
1486                 usbd_transfer_start(sc->sc_xfer[UHSO_BULK_ENDPT_READ]);
1487                 if (sc->sc_xfer[UHSO_BULK_ENDPT_INTR] != NULL)
1488                         usbd_transfer_start(sc->sc_xfer[UHSO_BULK_ENDPT_INTR]);
1489         }
1490 }
1491
1492 static void
1493 uhso_ucom_stop_read(struct ucom_softc *ucom)
1494 {
1495
1496         struct uhso_softc *sc = ucom->sc_parent;
1497
1498         if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_MUX) {
1499                 sc->sc_tty[ucom->sc_subunit].ht_open = 0;
1500                 usbd_transfer_stop(
1501                     sc->sc_tty[ucom->sc_subunit].ht_xfer[UHSO_CTRL_READ]);
1502         }
1503         else if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK) {
1504                 sc->sc_tty[0].ht_open = 0;
1505                 usbd_transfer_start(sc->sc_xfer[UHSO_BULK_ENDPT_READ]);
1506                 if (sc->sc_xfer[UHSO_BULK_ENDPT_INTR] != NULL)
1507                         usbd_transfer_stop(sc->sc_xfer[UHSO_BULK_ENDPT_INTR]);
1508         }
1509 }
1510
1511 static void
1512 uhso_ucom_start_write(struct ucom_softc *ucom)
1513 {
1514         struct uhso_softc *sc = ucom->sc_parent;
1515
1516         if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_MUX) {
1517                 UHSO_DPRINTF(3, "local unit %d\n", ucom->sc_subunit);
1518
1519                 usbd_transfer_start(sc->sc_xfer[UHSO_MUX_ENDPT_INTR]);
1520
1521                 usbd_xfer_set_priv(
1522                     sc->sc_tty[ucom->sc_subunit].ht_xfer[UHSO_CTRL_WRITE],
1523                     &sc->sc_tty[ucom->sc_subunit]);
1524                 usbd_transfer_start(
1525                     sc->sc_tty[ucom->sc_subunit].ht_xfer[UHSO_CTRL_WRITE]);
1526
1527         }
1528         else if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK) {
1529                 usbd_transfer_start(sc->sc_xfer[UHSO_BULK_ENDPT_WRITE]);
1530         }
1531 }
1532
1533 static void
1534 uhso_ucom_stop_write(struct ucom_softc *ucom)
1535 {
1536         struct uhso_softc *sc = ucom->sc_parent;
1537
1538         if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_MUX) {
1539                 usbd_transfer_stop(
1540                     sc->sc_tty[ucom->sc_subunit].ht_xfer[UHSO_CTRL_WRITE]);
1541         }
1542         else if (UHSO_IFACE_USB_TYPE(sc->sc_type) & UHSO_IF_BULK) {
1543                 usbd_transfer_stop(sc->sc_xfer[UHSO_BULK_ENDPT_WRITE]);
1544         }
1545 }
1546
1547 static int
1548 uhso_attach_ifnet(struct uhso_softc *sc, struct usb_interface *iface, int type)
1549 {
1550         struct ifnet *ifp;
1551         usb_error_t uerr;
1552         struct sysctl_ctx_list *sctx;
1553         struct sysctl_oid *soid;
1554         unsigned int devunit;
1555
1556         uerr = usbd_transfer_setup(sc->sc_udev,
1557             &iface->idesc->bInterfaceNumber, sc->sc_if_xfer,
1558             uhso_ifnet_config, UHSO_IFNET_MAX, sc, &sc->sc_mtx);
1559         if (uerr) {
1560                 UHSO_DPRINTF(0, "usbd_transfer_setup failed: %s\n",
1561                     usbd_errstr(uerr));
1562                 return (-1);
1563         }
1564
1565         sc->sc_ifp = ifp = if_alloc(IFT_OTHER);
1566         if (sc->sc_ifp == NULL) {
1567                 device_printf(sc->sc_dev, "if_alloc() failed\n");
1568                 return (-1);
1569         }
1570
1571         callout_init_mtx(&sc->sc_c, &sc->sc_mtx, 0);
1572         mtx_lock(&sc->sc_mtx);
1573         callout_reset(&sc->sc_c, 1, uhso_if_rxflush, sc);
1574         mtx_unlock(&sc->sc_mtx);
1575
1576         /*
1577          * We create our own unit numbers for ifnet devices because the
1578          * USB interface unit numbers can be at arbitrary positions yielding
1579          * odd looking device names.
1580          */
1581         devunit = alloc_unr(uhso_ifnet_unit);
1582
1583         if_initname(ifp, device_get_name(sc->sc_dev), devunit);
1584         ifp->if_mtu = UHSO_MAX_MTU;
1585         ifp->if_ioctl = uhso_if_ioctl;
1586         ifp->if_init = uhso_if_init;
1587         ifp->if_start = uhso_if_start;
1588         ifp->if_output = uhso_if_output;
1589         ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_NOARP;
1590         ifp->if_softc = sc;
1591         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
1592         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
1593         IFQ_SET_READY(&ifp->if_snd);
1594
1595         if_attach(ifp);
1596         bpfattach(ifp, DLT_RAW, 0);
1597
1598         sctx = device_get_sysctl_ctx(sc->sc_dev);
1599         soid = device_get_sysctl_tree(sc->sc_dev);
1600         /* Unlocked read... */
1601         SYSCTL_ADD_STRING(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "netif",
1602             CTLFLAG_RD, ifp->if_xname, 0, "Attached network interface");
1603
1604         return (0);
1605 }
1606
1607 static void
1608 uhso_ifnet_read_callback(struct usb_xfer *xfer, usb_error_t error)
1609 {
1610         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1611         struct mbuf *m;
1612         struct usb_page_cache *pc;
1613         int actlen;
1614
1615         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1616
1617         UHSO_DPRINTF(3, "status=%d, actlen=%d\n", USB_GET_STATE(xfer), actlen);
1618
1619         switch (USB_GET_STATE(xfer)) {
1620         case USB_ST_TRANSFERRED:
1621                 if (actlen > 0 && (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1622                         pc = usbd_xfer_get_frame(xfer, 0);
1623                         m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1624                         usbd_copy_out(pc, 0, mtod(m, uint8_t *), actlen);
1625                         m->m_pkthdr.len = m->m_len = actlen;
1626                         /* Enqueue frame for further processing */
1627                         _IF_ENQUEUE(&sc->sc_rxq, m);
1628                         if (!callout_pending(&sc->sc_c) ||
1629                             !callout_active(&sc->sc_c)) {
1630                                 callout_schedule(&sc->sc_c, 1);
1631                         }
1632                 }
1633         /* FALLTHROUGH */
1634         case USB_ST_SETUP:
1635 tr_setup:
1636                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
1637                 usbd_transfer_submit(xfer);
1638                 break;
1639         default:
1640                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1641                 if (error == USB_ERR_CANCELLED)
1642                         break;
1643                 usbd_xfer_set_stall(xfer);
1644                 goto tr_setup;
1645         }
1646 }
1647
1648 /*
1649  * Deferred RX processing, called with mutex locked.
1650  *
1651  * Each frame we receive might contain several small ip-packets as well
1652  * as partial ip-packets. We need to separate/assemble them into individual
1653  * packets before sending them to the ip-layer.
1654  */
1655 static void
1656 uhso_if_rxflush(void *arg)
1657 {
1658         struct uhso_softc *sc = arg;
1659         struct ifnet *ifp = sc->sc_ifp;
1660         uint8_t *cp;
1661         struct mbuf *m, *m0, *mwait;
1662         struct ip *ip;
1663 #ifdef INET6
1664         struct ip6_hdr *ip6;
1665 #endif
1666         uint16_t iplen;
1667         int len, isr;
1668
1669         m = NULL;
1670         mwait = sc->sc_mwait;
1671         for (;;) {
1672                 if (m == NULL) {
1673                         _IF_DEQUEUE(&sc->sc_rxq, m);
1674                         if (m == NULL)
1675                                 break;
1676                         UHSO_DPRINTF(3, "dequeue m=%p, len=%d\n", m, m->m_len);
1677                 }
1678                 mtx_unlock(&sc->sc_mtx);
1679
1680                 /* Do we have a partial packet waiting? */
1681                 if (mwait != NULL) {
1682                         m0 = mwait;
1683                         mwait = NULL;
1684
1685                         UHSO_DPRINTF(3, "partial m0=%p(%d), concat w/ m=%p(%d)\n",
1686                             m0, m0->m_len, m, m->m_len);
1687                         len = m->m_len + m0->m_len;
1688
1689                         /* Concat mbufs and fix headers */
1690                         m_cat(m0, m);
1691                         m0->m_pkthdr.len = len;
1692                         m->m_flags &= ~M_PKTHDR;
1693
1694                         m = m_pullup(m0, sizeof(struct ip));
1695                         if (m == NULL) {
1696                                 ifp->if_ierrors++;
1697                                 UHSO_DPRINTF(0, "m_pullup failed\n");
1698                                 mtx_lock(&sc->sc_mtx);
1699                                 continue;
1700                         }
1701                         UHSO_DPRINTF(3, "Constructed mbuf=%p, len=%d\n",
1702                             m, m->m_pkthdr.len);
1703                 }
1704
1705                 cp = mtod(m, uint8_t *);
1706                 ip = (struct ip *)cp;
1707 #ifdef INET6
1708                 ip6 = (struct ip6_hdr *)cp;
1709 #endif
1710
1711                 /* Check for IPv4 */
1712                 if (ip->ip_v == IPVERSION) {
1713                         iplen = htons(ip->ip_len);
1714                         isr = NETISR_IP;
1715                 }
1716 #ifdef INET6
1717                 /* Check for IPv6 */
1718                 else if ((ip6->ip6_vfc & IPV6_VERSION_MASK) == IPV6_VERSION) {
1719                         iplen = htons(ip6->ip6_plen);
1720                         isr = NETISR_IPV6;
1721                 }
1722 #endif
1723                 else {
1724                         UHSO_DPRINTF(0, "got unexpected ip version %d, "
1725                             "m=%p, len=%d\n", (*cp & 0xf0) >> 4, m, m->m_len);
1726                         ifp->if_ierrors++;
1727                         UHSO_HEXDUMP(cp, 4);
1728                         m_freem(m);
1729                         m = NULL;
1730                         mtx_lock(&sc->sc_mtx);
1731                         continue;
1732                 }
1733
1734                 if (iplen == 0) {
1735                         UHSO_DPRINTF(0, "Zero IP length\n");
1736                         ifp->if_ierrors++;
1737                         m_freem(m);
1738                         m = NULL;
1739                         mtx_lock(&sc->sc_mtx);
1740                         continue;
1741                 }
1742
1743                 UHSO_DPRINTF(3, "m=%p, len=%d, cp=%p, iplen=%d\n",
1744                     m, m->m_pkthdr.len, cp, iplen);
1745
1746                 m0 = NULL;
1747
1748                 /* More IP packets in this mbuf */
1749                 if (iplen < m->m_pkthdr.len) {
1750                         m0 = m;
1751
1752                         /*
1753                          * Allocate a new mbuf for this IP packet and
1754                          * copy the IP-packet into it.
1755                          */
1756                         m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1757                         memcpy(mtod(m, uint8_t *), mtod(m0, uint8_t *), iplen);
1758                         m->m_pkthdr.len = m->m_len = iplen;
1759
1760                         /* Adjust the size of the original mbuf */
1761                         m_adj(m0, iplen);
1762                         m0 = m_defrag(m0, M_WAITOK);
1763
1764                         UHSO_DPRINTF(3, "New mbuf=%p, len=%d/%d, m0=%p, "
1765                             "m0_len=%d/%d\n", m, m->m_pkthdr.len, m->m_len,
1766                             m0, m0->m_pkthdr.len, m0->m_len);
1767                 }
1768                 else if (iplen > m->m_pkthdr.len) {
1769                         UHSO_DPRINTF(3, "Deferred mbuf=%p, len=%d\n",
1770                             m, m->m_pkthdr.len);
1771                         mwait = m;
1772                         m = NULL;
1773                         mtx_lock(&sc->sc_mtx);
1774                         continue;
1775                 }
1776
1777                 ifp->if_ipackets++;
1778                 m->m_pkthdr.rcvif = ifp;
1779
1780                 /* Dispatch to IP layer */
1781                 BPF_MTAP(sc->sc_ifp, m);
1782                 M_SETFIB(m, ifp->if_fib);
1783                 netisr_dispatch(isr, m);
1784                 m = m0 != NULL ? m0 : NULL;
1785                 mtx_lock(&sc->sc_mtx);
1786         }
1787         sc->sc_mwait = mwait;
1788 }
1789
1790 static void
1791 uhso_ifnet_write_callback(struct usb_xfer *xfer, usb_error_t error)
1792 {
1793         struct uhso_softc *sc = usbd_xfer_softc(xfer);
1794         struct ifnet *ifp = sc->sc_ifp;
1795         struct usb_page_cache *pc;
1796         struct mbuf *m;
1797         int actlen;
1798
1799         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
1800
1801         UHSO_DPRINTF(3, "status %d, actlen=%d\n", USB_GET_STATE(xfer), actlen);
1802
1803         switch (USB_GET_STATE(xfer)) {
1804         case USB_ST_TRANSFERRED:
1805                 ifp->if_opackets++;
1806                 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1807         case USB_ST_SETUP:
1808 tr_setup:
1809                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1810                 if (m == NULL)
1811                         break;
1812
1813                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1814
1815                 if (m->m_pkthdr.len > MCLBYTES)
1816                         m->m_pkthdr.len = MCLBYTES;
1817
1818                 usbd_xfer_set_frame_len(xfer, 0, m->m_pkthdr.len);
1819                 pc = usbd_xfer_get_frame(xfer, 0);
1820                 usbd_m_copy_in(pc, 0, m, 0, m->m_pkthdr.len);
1821                 usbd_transfer_submit(xfer);
1822
1823                 BPF_MTAP(ifp, m);
1824                 m_freem(m);
1825                 break;
1826         default:
1827                 UHSO_DPRINTF(0, "error: %s\n", usbd_errstr(error));
1828                 if (error == USB_ERR_CANCELLED)
1829                         break;
1830                 usbd_xfer_set_stall(xfer);
1831                 goto tr_setup;
1832         }
1833 }
1834
1835 static int
1836 uhso_if_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1837 {
1838         struct uhso_softc *sc;
1839
1840         sc = ifp->if_softc;
1841
1842         switch (cmd) {
1843         case SIOCSIFFLAGS:
1844                 if (ifp->if_flags & IFF_UP) {
1845                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1846                                 uhso_if_init(sc);
1847                         }
1848                 }
1849                 else {
1850                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1851                                 mtx_lock(&sc->sc_mtx);
1852                                 uhso_if_stop(sc);
1853                                 mtx_unlock(&sc->sc_mtx);
1854                         }
1855                 }
1856                 break;
1857         case SIOCSIFADDR:
1858         case SIOCSIFDSTADDR:
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, 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                 ifp->if_oerrors++;
1902                 return (ENOBUFS);
1903         }
1904         ifp->if_opackets++;
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 }