sys/bus/u4b/net/if_cue.c

   1 /*-
   2  * Copyright (c) 1997, 1998, 1999, 2000
   3  *      Bill Paul <wpaul@ee.columbia.edu>.  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  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by Bill Paul.
  16  * 4. Neither the name of the author nor the names of any co-contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  30  * THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * $FreeBSD: head/sys/dev/usb/net/if_cue.c 271832 2014-09-18 21:09:22Z glebius $
  33  */
  34
  35 /*
  36  * CATC USB-EL1210A USB to ethernet driver. Used in the CATC Netmate
  37  * adapters and others.
  38  *
  39  * Written by Bill Paul <wpaul@ee.columbia.edu>
  40  * Electrical Engineering Department
  41  * Columbia University, New York City
  42  */
  43
  44 /*
  45  * The CATC USB-EL1210A provides USB ethernet support at 10Mbps. The
  46  * RX filter uses a 512-bit multicast hash table, single perfect entry
  47  * for the station address, and promiscuous mode. Unlike the ADMtek
  48  * and KLSI chips, the CATC ASIC supports read and write combining
  49  * mode where multiple packets can be transfered using a single bulk
  50  * transaction, which helps performance a great deal.
  51  */
  52
  53 #include <sys/stdint.h>
  54 #include <sys/param.h>
  55 #include <sys/queue.h>
  56 #include <sys/types.h>
  57 #include <sys/systm.h>
  58 #include <sys/socket.h>
  59 #include <sys/kernel.h>
  60 #include <sys/bus.h>
  61 #include <sys/module.h>
  62 #include <sys/lock.h>
  63 #include <sys/condvar.h>
  64 #include <sys/sysctl.h>
  65 #include <sys/unistd.h>
  66 #include <sys/callout.h>
  67 #include <sys/malloc.h>
  68 #include <sys/caps.h>
  69
  70 #include <net/if.h>
  71 #include <net/if_var.h>
  72 #include <net/ifq_var.h>
  73
  74 #include <bus/u4b/usb.h>
  75 #include <bus/u4b/usbdi.h>
  76 #include <bus/u4b/usbdi_util.h>
  77 #include "usbdevs.h"
  78
  79 #define USB_DEBUG_VAR cue_debug
  80 #include <bus/u4b/usb_debug.h>
  81 #include <bus/u4b/usb_process.h>
  82
  83 #include <bus/u4b/net/usb_ethernet.h>
  84 #include <bus/u4b/net/if_cuereg.h>
  85
  86 /*
  87  * Various supported device vendors/products.
  88  */
  89
  90 /* Belkin F5U111 adapter covered by NETMATE entry */
  91
  92 static const STRUCT_USB_HOST_ID cue_devs[] = {
  93 #define CUE_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
  94         CUE_DEV(CATC, NETMATE),
  95         CUE_DEV(CATC, NETMATE2),
  96         CUE_DEV(SMARTBRIDGES, SMARTLINK),
  97 #undef CUE_DEV
  98 };
  99
 100 /* prototypes */
 101
 102 static device_probe_t cue_probe;
 103 static device_attach_t cue_attach;
 104 static device_detach_t cue_detach;
 105
 106 static usb_callback_t cue_bulk_read_callback;
 107 static usb_callback_t cue_bulk_write_callback;
 108
 109 static uether_fn_t cue_attach_post;
 110 static uether_fn_t cue_init;
 111 static uether_fn_t cue_stop;
 112 static uether_fn_t cue_start;
 113 static uether_fn_t cue_tick;
 114 static uether_fn_t cue_setmulti;
 115 static uether_fn_t cue_setpromisc;
 116
 117 static uint8_t  cue_csr_read_1(struct cue_softc *, uint16_t);
 118 static uint16_t cue_csr_read_2(struct cue_softc *, uint8_t);
 119 static int      cue_csr_write_1(struct cue_softc *, uint16_t, uint16_t);
 120 static int      cue_mem(struct cue_softc *, uint8_t, uint16_t, void *, int);
 121 static int      cue_getmac(struct cue_softc *, void *);
 122 static uint32_t cue_mchash(const uint8_t *);
 123 static void     cue_reset(struct cue_softc *);
 124
 125 #ifdef USB_DEBUG
 126 static int cue_debug = 0;
 127
 128 static SYSCTL_NODE(_hw_usb, OID_AUTO, cue, CTLFLAG_RW, 0, "USB cue");
 129 SYSCTL_INT(_hw_usb_cue, OID_AUTO, debug, CTLFLAG_RW, &cue_debug, 0,
 130     "Debug level");
 131 #endif
 132
 133 static const struct usb_config cue_config[CUE_N_TRANSFER] = {
 134
 135         [CUE_BULK_DT_WR] = {
 136                 .type = UE_BULK,
 137                 .endpoint = UE_ADDR_ANY,
 138                 .direction = UE_DIR_OUT,
 139                 .bufsize = (MCLBYTES + 2),
 140                 .flags = {.pipe_bof = 1,},
 141                 .callback = cue_bulk_write_callback,
 142                 .timeout = 10000,       /* 10 seconds */
 143         },
 144
 145         [CUE_BULK_DT_RD] = {
 146                 .type = UE_BULK,
 147                 .endpoint = UE_ADDR_ANY,
 148                 .direction = UE_DIR_IN,
 149                 .bufsize = (MCLBYTES + 2),
 150                 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
 151                 .callback = cue_bulk_read_callback,
 152         },
 153 };
 154
 155 static device_method_t cue_methods[] = {
 156         /* Device interface */
 157         DEVMETHOD(device_probe, cue_probe),
 158         DEVMETHOD(device_attach, cue_attach),
 159         DEVMETHOD(device_detach, cue_detach),
 160
 161         DEVMETHOD_END
 162 };
 163
 164 static driver_t cue_driver = {
 165         .name = "cue",
 166         .methods = cue_methods,
 167         .size = sizeof(struct cue_softc),
 168 };
 169
 170 static devclass_t cue_devclass;
 171
 172 DRIVER_MODULE(cue, uhub, cue_driver, cue_devclass, NULL, NULL);
 173 MODULE_DEPEND(cue, uether, 1, 1, 1);
 174 MODULE_DEPEND(cue, usb, 1, 1, 1);
 175 MODULE_DEPEND(cue, ether, 1, 1, 1);
 176 MODULE_VERSION(cue, 1);
 177
 178 static const struct usb_ether_methods cue_ue_methods = {
 179         .ue_attach_post = cue_attach_post,
 180         .ue_start = cue_start,
 181         .ue_init = cue_init,
 182         .ue_stop = cue_stop,
 183         .ue_tick = cue_tick,
 184         .ue_setmulti = cue_setmulti,
 185         .ue_setpromisc = cue_setpromisc,
 186 };
 187
 188 #define CUE_SETBIT(sc, reg, x)                          \
 189         cue_csr_write_1(sc, reg, cue_csr_read_1(sc, reg) | (x))
 190
 191 #define CUE_CLRBIT(sc, reg, x)                          \
 192         cue_csr_write_1(sc, reg, cue_csr_read_1(sc, reg) & ~(x))
 193
 194 static uint8_t
 195 cue_csr_read_1(struct cue_softc *sc, uint16_t reg)
 196 {
 197         struct usb_device_request req;
 198         uint8_t val;
 199
 200         req.bmRequestType = UT_READ_VENDOR_DEVICE;
 201         req.bRequest = CUE_CMD_READREG;
 202         USETW(req.wValue, 0);
 203         USETW(req.wIndex, reg);
 204         USETW(req.wLength, 1);
 205
 206         if (uether_do_request(&sc->sc_ue, &req, &val, 1000)) {
 207                 /* ignore any errors */
 208         }
 209         return (val);
 210 }
 211
 212 static uint16_t
 213 cue_csr_read_2(struct cue_softc *sc, uint8_t reg)
 214 {
 215         struct usb_device_request req;
 216         uint16_t val;
 217
 218         req.bmRequestType = UT_READ_VENDOR_DEVICE;
 219         req.bRequest = CUE_CMD_READREG;
 220         USETW(req.wValue, 0);
 221         USETW(req.wIndex, reg);
 222         USETW(req.wLength, 2);
 223
 224         (void)uether_do_request(&sc->sc_ue, &req, &val, 1000);
 225         return (le16toh(val));
 226 }
 227
 228 static int
 229 cue_csr_write_1(struct cue_softc *sc, uint16_t reg, uint16_t val)
 230 {
 231         struct usb_device_request req;
 232
 233         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 234         req.bRequest = CUE_CMD_WRITEREG;
 235         USETW(req.wValue, val);
 236         USETW(req.wIndex, reg);
 237         USETW(req.wLength, 0);
 238
 239         return (uether_do_request(&sc->sc_ue, &req, NULL, 1000));
 240 }
 241
 242 static int
 243 cue_mem(struct cue_softc *sc, uint8_t cmd, uint16_t addr, void *buf, int len)
 244 {
 245         struct usb_device_request req;
 246
 247         if (cmd == CUE_CMD_READSRAM)
 248                 req.bmRequestType = UT_READ_VENDOR_DEVICE;
 249         else
 250                 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 251         req.bRequest = cmd;
 252         USETW(req.wValue, 0);
 253         USETW(req.wIndex, addr);
 254         USETW(req.wLength, len);
 255
 256         return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
 257 }
 258
 259 static int
 260 cue_getmac(struct cue_softc *sc, void *buf)
 261 {
 262         struct usb_device_request req;
 263
 264         req.bmRequestType = UT_READ_VENDOR_DEVICE;
 265         req.bRequest = CUE_CMD_GET_MACADDR;
 266         USETW(req.wValue, 0);
 267         USETW(req.wIndex, 0);
 268         USETW(req.wLength, ETHER_ADDR_LEN);
 269
 270         return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
 271 }
 272
 273 #define CUE_BITS 9
 274
 275 static uint32_t
 276 cue_mchash(const uint8_t *addr)
 277 {
 278         uint32_t crc;
 279
 280         /* Compute CRC for the address value. */
 281         crc = ether_crc32_le(addr, ETHER_ADDR_LEN);
 282
 283         return (crc & ((1 << CUE_BITS) - 1));
 284 }
 285
 286 static void
 287 cue_setpromisc(struct usb_ether *ue)
 288 {
 289         struct cue_softc *sc = uether_getsc(ue);
 290         struct ifnet *ifp = uether_getifp(ue);
 291
 292         CUE_LOCK_ASSERT(sc);
 293
 294         /* if we want promiscuous mode, set the allframes bit */
 295         if (ifp->if_flags & IFF_PROMISC)
 296                 CUE_SETBIT(sc, CUE_ETHCTL, CUE_ETHCTL_PROMISC);
 297         else
 298                 CUE_CLRBIT(sc, CUE_ETHCTL, CUE_ETHCTL_PROMISC);
 299
 300         /* write multicast hash-bits */
 301         cue_setmulti(ue);
 302 }
 303
 304 static void
 305 cue_setmulti(struct usb_ether *ue)
 306 {
 307         struct cue_softc *sc = uether_getsc(ue);
 308         struct ifnet *ifp = uether_getifp(ue);
 309         struct ifmultiaddr *ifma;
 310         uint32_t h = 0, i;
 311         uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
 312
 313         CUE_LOCK_ASSERT(sc);
 314
 315         if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
 316                 for (i = 0; i < 8; i++)
 317                         hashtbl[i] = 0xff;
 318                 cue_mem(sc, CUE_CMD_WRITESRAM, CUE_MCAST_TABLE_ADDR,
 319                     &hashtbl, 8);
 320                 return;
 321         }
 322
 323         /* now program new ones */
 324         TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link)
 325         {
 326                 if (ifma->ifma_addr->sa_family != AF_LINK)
 327                         continue;
 328                 h = cue_mchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
 329                 hashtbl[h >> 3] |= 1 << (h & 0x7);
 330         }
 331
 332         /*
 333          * Also include the broadcast address in the filter
 334          * so we can receive broadcast frames.
 335          */
 336         if (ifp->if_flags & IFF_BROADCAST) {
 337                 h = cue_mchash(ifp->if_broadcastaddr);
 338                 hashtbl[h >> 3] |= 1 << (h & 0x7);
 339         }
 340
 341         cue_mem(sc, CUE_CMD_WRITESRAM, CUE_MCAST_TABLE_ADDR, &hashtbl, 8);
 342 }
 343
 344 static void
 345 cue_reset(struct cue_softc *sc)
 346 {
 347         struct usb_device_request req;
 348
 349         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
 350         req.bRequest = CUE_CMD_RESET;
 351         USETW(req.wValue, 0);
 352         USETW(req.wIndex, 0);
 353         USETW(req.wLength, 0);
 354
 355         if (uether_do_request(&sc->sc_ue, &req, NULL, 1000)) {
 356                 /* ignore any errors */
 357         }
 358
 359         /*
 360          * wait a little while for the chip to get its brains in order:
 361          */
 362         uether_pause(&sc->sc_ue, hz / 100);
 363 }
 364
 365 static void
 366 cue_attach_post(struct usb_ether *ue)
 367 {
 368         struct cue_softc *sc = uether_getsc(ue);
 369
 370         cue_getmac(sc, ue->ue_eaddr);
 371 }
 372
 373 static int
 374 cue_probe(device_t dev)
 375 {
 376         struct usb_attach_arg *uaa = device_get_ivars(dev);
 377
 378         if (uaa->usb_mode != USB_MODE_HOST)
 379                 return (ENXIO);
 380         if (uaa->info.bConfigIndex != CUE_CONFIG_IDX)
 381                 return (ENXIO);
 382         if (uaa->info.bIfaceIndex != CUE_IFACE_IDX)
 383                 return (ENXIO);
 384
 385         return (usbd_lookup_id_by_uaa(cue_devs, sizeof(cue_devs), uaa));
 386 }
 387
 388 /*
 389  * Attach the interface. Allocate softc structures, do ifmedia
 390  * setup and ethernet/BPF attach.
 391  */
 392 static int
 393 cue_attach(device_t dev)
 394 {
 395         struct usb_attach_arg *uaa = device_get_ivars(dev);
 396         struct cue_softc *sc = device_get_softc(dev);
 397         struct usb_ether *ue = &sc->sc_ue;
 398         uint8_t iface_index;
 399         int error;
 400
 401         device_set_usb_desc(dev);
 402         lockinit(&sc->sc_lock, device_get_nameunit(dev), 0, LK_CANRECURSE);
 403
 404         iface_index = CUE_IFACE_IDX;
 405         error = usbd_transfer_setup(uaa->device, &iface_index,
 406             sc->sc_xfer, cue_config, CUE_N_TRANSFER, sc, &sc->sc_lock);
 407         if (error) {
 408                 device_printf(dev, "allocating USB transfers failed\n");
 409                 goto detach;
 410         }
 411
 412         ue->ue_sc = sc;
 413         ue->ue_dev = dev;
 414         ue->ue_udev = uaa->device;
 415         ue->ue_lock = &sc->sc_lock;
 416         ue->ue_methods = &cue_ue_methods;
 417
 418         error = uether_ifattach(ue);
 419         if (error) {
 420                 device_printf(dev, "could not attach interface\n");
 421                 goto detach;
 422         }
 423         return (0);                     /* success */
 424
 425 detach:
 426         cue_detach(dev);
 427         return (ENXIO);                 /* failure */
 428 }
 429
 430 static int
 431 cue_detach(device_t dev)
 432 {
 433         struct cue_softc *sc = device_get_softc(dev);
 434         struct usb_ether *ue = &sc->sc_ue;
 435
 436         usbd_transfer_unsetup(sc->sc_xfer, CUE_N_TRANSFER);
 437         uether_ifdetach(ue);
 438         lockuninit(&sc->sc_lock);
 439
 440         return (0);
 441 }
 442
 443 static void
 444 cue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
 445 {
 446         struct cue_softc *sc = usbd_xfer_softc(xfer);
 447         struct usb_ether *ue = &sc->sc_ue;
 448         struct ifnet *ifp = uether_getifp(ue);
 449         struct usb_page_cache *pc;
 450         uint8_t buf[2];
 451         int len;
 452         int actlen;
 453
 454         usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
 455
 456         switch (USB_GET_STATE(xfer)) {
 457         case USB_ST_TRANSFERRED:
 458
 459                 if (actlen <= (int)(2 + sizeof(struct ether_header))) {
 460                         IFNET_STAT_INC(ifp, ierrors, 1);
 461                         goto tr_setup;
 462                 }
 463                 pc = usbd_xfer_get_frame(xfer, 0);
 464                 usbd_copy_out(pc, 0, buf, 2);
 465                 actlen -= 2;
 466                 len = buf[0] | (buf[1] << 8);
 467                 len = min(actlen, len);
 468
 469                 uether_rxbuf(ue, pc, 2, len);
 470                 /* FALLTHROUGH */
 471         case USB_ST_SETUP:
 472 tr_setup:
 473                 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
 474                 usbd_transfer_submit(xfer);
 475                 uether_rxflush(ue);
 476                 return;
 477
 478         default:                        /* Error */
 479                 DPRINTF("bulk read error, %s\n",
 480                     usbd_errstr(error));
 481
 482                 if (error != USB_ERR_CANCELLED) {
 483                         /* try to clear stall first */
 484                         usbd_xfer_set_stall(xfer);
 485                         goto tr_setup;
 486                 }
 487                 return;
 488
 489         }
 490 }
 491
 492 static void
 493 cue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
 494 {
 495         struct cue_softc *sc = usbd_xfer_softc(xfer);
 496         struct ifnet *ifp = uether_getifp(&sc->sc_ue);
 497         struct usb_page_cache *pc;
 498         struct mbuf *m;
 499         uint8_t buf[2];
 500
 501         switch (USB_GET_STATE(xfer)) {
 502         case USB_ST_TRANSFERRED:
 503                 DPRINTFN(11, "transfer complete\n");
 504                 IFNET_STAT_INC(ifp, opackets, 1);
 505
 506                 /* FALLTHROUGH */
 507         case USB_ST_SETUP:
 508 tr_setup:
 509                 m = ifq_dequeue(&ifp->if_snd);
 510
 511                 if (m == NULL)
 512                         return;
 513                 if (m->m_pkthdr.len > MCLBYTES)
 514                         m->m_pkthdr.len = MCLBYTES;
 515                 usbd_xfer_set_frame_len(xfer, 0, (m->m_pkthdr.len + 2));
 516
 517                 /* the first two bytes are the frame length */
 518
 519                 buf[0] = (uint8_t)(m->m_pkthdr.len);
 520                 buf[1] = (uint8_t)(m->m_pkthdr.len >> 8);
 521
 522                 pc = usbd_xfer_get_frame(xfer, 0);
 523                 usbd_copy_in(pc, 0, buf, 2);
 524                 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len);
 525
 526                 /*
 527                  * If there's a BPF listener, bounce a copy of this frame
 528                  * to him.
 529                  */
 530                 BPF_MTAP(ifp, m);
 531
 532                 m_freem(m);
 533
 534                 usbd_transfer_submit(xfer);
 535
 536                 return;
 537
 538         default:                        /* Error */
 539                 DPRINTFN(11, "transfer error, %s\n",
 540                     usbd_errstr(error));
 541
 542                 IFNET_STAT_INC(ifp, oerrors, 1);
 543
 544                 if (error != USB_ERR_CANCELLED) {
 545                         /* try to clear stall first */
 546                         usbd_xfer_set_stall(xfer);
 547                         goto tr_setup;
 548                 }
 549                 return;
 550         }
 551 }
 552
 553 static void
 554 cue_tick(struct usb_ether *ue)
 555 {
 556         struct cue_softc *sc = uether_getsc(ue);
 557         struct ifnet *ifp = uether_getifp(ue);
 558
 559         CUE_LOCK_ASSERT(sc);
 560
 561         IFNET_STAT_INC(ifp, collisions, cue_csr_read_2(sc, CUE_TX_SINGLECOLL));
 562         IFNET_STAT_INC(ifp, collisions, cue_csr_read_2(sc, CUE_TX_MULTICOLL));
 563         IFNET_STAT_INC(ifp, collisions, cue_csr_read_2(sc, CUE_TX_EXCESSCOLL));
 564
 565         if (cue_csr_read_2(sc, CUE_RX_FRAMEERR))
 566                 IFNET_STAT_INC(ifp, ierrors, 1);
 567 }
 568
 569 static void
 570 cue_start(struct usb_ether *ue)
 571 {
 572         struct cue_softc *sc = uether_getsc(ue);
 573
 574         /*
 575          * start the USB transfers, if not already started:
 576          */
 577         usbd_transfer_start(sc->sc_xfer[CUE_BULK_DT_RD]);
 578         usbd_transfer_start(sc->sc_xfer[CUE_BULK_DT_WR]);
 579 }
 580
 581 static void
 582 cue_init(struct usb_ether *ue)
 583 {
 584         struct cue_softc *sc = uether_getsc(ue);
 585         struct ifnet *ifp = uether_getifp(ue);
 586         int i;
 587
 588         CUE_LOCK_ASSERT(sc);
 589
 590         /*
 591          * Cancel pending I/O and free all RX/TX buffers.
 592          */
 593         cue_stop(ue);
 594 #if 0
 595         cue_reset(sc);
 596 #endif
 597         /* Set MAC address */
 598         for (i = 0; i < ETHER_ADDR_LEN; i++)
 599                 cue_csr_write_1(sc, CUE_PAR0 - i, IF_LLADDR(ifp)[i]);
 600
 601         /* Enable RX logic. */
 602         cue_csr_write_1(sc, CUE_ETHCTL, CUE_ETHCTL_RX_ON | CUE_ETHCTL_MCAST_ON);
 603
 604         /* Load the multicast filter */
 605         cue_setpromisc(ue);
 606
 607         /*
 608          * Set the number of RX and TX buffers that we want
 609          * to reserve inside the ASIC.
 610          */
 611         cue_csr_write_1(sc, CUE_RX_BUFPKTS, CUE_RX_FRAMES);
 612         cue_csr_write_1(sc, CUE_TX_BUFPKTS, CUE_TX_FRAMES);
 613
 614         /* Set advanced operation modes. */
 615         cue_csr_write_1(sc, CUE_ADVANCED_OPMODES,
 616             CUE_AOP_EMBED_RXLEN | 0x01);/* 1 wait state */
 617
 618         /* Program the LED operation. */
 619         cue_csr_write_1(sc, CUE_LEDCTL, CUE_LEDCTL_FOLLOW_LINK);
 620
 621         usbd_xfer_set_stall(sc->sc_xfer[CUE_BULK_DT_WR]);
 622
 623         ifp->if_flags |= IFF_RUNNING;
 624         cue_start(ue);
 625 }
 626
 627 /*
 628  * Stop the adapter and free any mbufs allocated to the
 629  * RX and TX lists.
 630  */
 631 static void
 632 cue_stop(struct usb_ether *ue)
 633 {
 634         struct cue_softc *sc = uether_getsc(ue);
 635         struct ifnet *ifp = uether_getifp(ue);
 636
 637         CUE_LOCK_ASSERT(sc);
 638
 639         ifp->if_flags &= ~IFF_RUNNING;
 640
 641         /*
 642          * stop all the transfers, if not already stopped:
 643          */
 644         usbd_transfer_stop(sc->sc_xfer[CUE_BULK_DT_WR]);
 645         usbd_transfer_stop(sc->sc_xfer[CUE_BULK_DT_RD]);
 646
 647         cue_csr_write_1(sc, CUE_ETHCTL, 0);
 648         cue_reset(sc);
 649 }