The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/netif/aue/if_aue.c

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    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: src/sys/dev/usb/if_aue.c,v 1.78 2003/12/17 14:23:07 sanpei Exp $
   33  */
   34 
   35 /*
   36  * ADMtek AN986 Pegasus and AN8511 Pegasus II USB to ethernet driver.
   37  * Datasheet is available from http://www.admtek.com.tw.
   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 Pegasus chip uses four USB "endpoints" to provide 10/100 ethernet
   46  * support: the control endpoint for reading/writing registers, burst
   47  * read endpoint for packet reception, burst write for packet transmission
   48  * and one for "interrupts." The chip uses the same RX filter scheme
   49  * as the other ADMtek ethernet parts: one perfect filter entry for the
   50  * the station address and a 64-bit multicast hash table. The chip supports
   51  * both MII and HomePNA attachments.
   52  *
   53  * Since the maximum data transfer speed of USB is supposed to be 12Mbps,
   54  * you're never really going to get 100Mbps speeds from this device. I
   55  * think the idea is to allow the device to connect to 10 or 100Mbps
   56  * networks, not necessarily to provide 100Mbps performance. Also, since
   57  * the controller uses an external PHY chip, it's possible that board
   58  * designers might simply choose a 10Mbps PHY.
   59  *
   60  * Registers are accessed using usbd_do_request(). Packet transfers are
   61  * done using usbd_transfer() and friends.
   62  */
   63 
   64 #include <sys/param.h>
   65 #include <sys/systm.h>
   66 #include <sys/sockio.h>
   67 #include <sys/mbuf.h>
   68 #include <sys/malloc.h>
   69 #include <sys/kernel.h>
   70 #include <sys/socket.h>
   71 #include <sys/bus.h>
   72 
   73 #include <net/if.h>
   74 #include <net/ifq_var.h>
   75 #include <net/if_arp.h>
   76 #include <net/ethernet.h>
   77 #include <net/if_dl.h>
   78 #include <net/if_media.h>
   79 #include <net/bpf.h>
   80 
   81 #include <bus/usb/usb.h>
   82 #include <bus/usb/usbdi.h>
   83 #include <bus/usb/usbdi_util.h>
   84 #include <bus/usb/usbdivar.h>
   85 #include <bus/usb/usb_ethersubr.h>
   86 
   87 #include "../mii_layer/mii.h"
   88 #include "../mii_layer/miivar.h"
   89 
   90 #include "if_auereg.h"
   91 
   92 MODULE_DEPEND(aue, usb, 1, 1, 1);
   93 MODULE_DEPEND(aue, miibus, 1, 1, 1);
   94 
   95 /* "controller miibus0" required.  See GENERIC if you get errors here. */
   96 #include "miibus_if.h"
   97 
   98 struct aue_type {
   99         struct usb_devno        aue_dev;
  100         u_int16_t               aue_flags;
  101 #define LSYS  0x0001          /* use Linksys reset */
  102 #define PNA   0x0002          /* has Home PNA */
  103 #define PII   0x0004          /* Pegasus II chip */
  104 };
  105 
  106 static const struct aue_type aue_devs[] = {
  107  {{ USB_DEVICE(0x03f0, 0x811c) }, PII },  /* HP HN210E */
  108  {{ USB_DEVICE(0x0411, 0x0001) }, 0 },    /* Melco LUA-TX */
  109  {{ USB_DEVICE(0x0411, 0x0005) }, 0 },    /* Melco LUA-TX */
  110  {{ USB_DEVICE(0x0411, 0x0009) }, PII },  /* Melco LUA2-TX */
  111  {{ USB_DEVICE(0x045e, 0x007a) }, PII },  /* Microsoft MN110 */
  112  {{ USB_DEVICE(0x04bb, 0x0904) }, 0 },    /* I-O DATA USB ETTX */
  113  {{ USB_DEVICE(0x04bb, 0x0913) }, PII },  /* I-O DATA USB ETTX */
  114  {{ USB_DEVICE(0x0506, 0x4601) }, PII },  /* 3com HomeConnect 3C460B */
  115  {{ USB_DEVICE(0x050d, 0x0121) }, PII },  /* Belkin USB to LAN Converter */
  116  {{ USB_DEVICE(0x056e, 0x200c) }, 0 },    /* Elecom LD-USB/TX */
  117  {{ USB_DEVICE(0x056e, 0x4002) }, LSYS }, /* Elecom LD-USB/TX */
  118  {{ USB_DEVICE(0x056e, 0x4005) }, PII },  /* Elecom LD-USBL/TX */
  119  {{ USB_DEVICE(0x056e, 0x400b) }, 0 },    /* Elecom LD-USB/TX */
  120  {{ USB_DEVICE(0x056e, 0xabc1) }, LSYS }, /* Elecom LD-USB/TX */
  121  {{ USB_DEVICE(0x05cc, 0x3000) }, 0 },    /* Elsa Microlink USB2Ethernet */
  122  {{ USB_DEVICE(0x066b, 0x200c) }, LSYS|PII }, /* Linksys USB10TX */
  123  {{ USB_DEVICE(0x066b, 0x2202) }, LSYS }, /* Linksys USB10T */
  124  {{ USB_DEVICE(0x066b, 0x2203) }, LSYS }, /* Linksys USB100TX */
  125  {{ USB_DEVICE(0x066b, 0x2204) }, LSYS|PNA }, /* Linksys USB100H1 */
  126  {{ USB_DEVICE(0x066b, 0x2206) }, LSYS }, /* Linksys USB10TA */
  127  {{ USB_DEVICE(0x066b, 0x400b) }, LSYS|PII }, /* Linksys USB10TX */
  128  {{ USB_DEVICE(0x067c, 0x1001) }, PII },  /* Siemens SpeedStream USB */
  129  {{ USB_DEVICE(0x0707, 0x0200) }, 0 },    /* SMC 2202USB */
  130  {{ USB_DEVICE(0x0707, 0x0201) }, PII },  /* SMC 2206USB */
  131  {{ USB_DEVICE(0x07a6, 0x0986) }, PNA },  /* ADMtek AN986 */
  132  {{ USB_DEVICE(0x07a6, 0x8511) }, PII },  /* ADMtek AN8511 */
  133  {{ USB_DEVICE(0x07a6, 0x8513) }, PII },  /* ADMtek AN8513 */
  134  {{ USB_DEVICE(0x07aa, 0x0004) }, 0 },    /* Corega FEther USB-TX */
  135  {{ USB_DEVICE(0x07aa, 0x000d) }, PII },  /* Corega FEther USB-TXS */
  136  {{ USB_DEVICE(0x07b8, 0x110c) }, PNA|PII }, /* AboCom XX1 */
  137  {{ USB_DEVICE(0x07b8, 0x200c) }, PII },  /* AboCom XX2 */
  138  {{ USB_DEVICE(0x07b8, 0x4002) }, LSYS }, /* AboCom UFE1000 */
  139  {{ USB_DEVICE(0x07b8, 0x4003) }, 0 },    /* AboCom DSB650TX_PNA */
  140  {{ USB_DEVICE(0x07b8, 0x4004) }, PNA },  /* AboCom XX4 */
  141  {{ USB_DEVICE(0x07b8, 0x4007) }, PNA },  /* AboCom XX5 */
  142  {{ USB_DEVICE(0x07b8, 0x400b) }, PII },  /* AboCom XX6 */
  143  {{ USB_DEVICE(0x07b8, 0x400c) }, PII },  /* AboCom XX7 */
  144  {{ USB_DEVICE(0x07b8, 0x4102) }, PII },  /* AboCom XX8 */
  145  {{ USB_DEVICE(0x07b8, 0x4104) }, PNA },  /* AboCom XX9 */
  146  {{ USB_DEVICE(0x07b8, 0xabc1) }, 0 },    /* AboCom XX10 */
  147  {{ USB_DEVICE(0x083a, 0x1046) }, 0 },    /* Accton USB320-EC */
  148  {{ USB_DEVICE(0x083a, 0x5046) }, PII },  /* Accton SpeedStream 1001 */
  149  {{ USB_DEVICE(0x08d1, 0x0003) }, PII },  /* SmartBridges smartNIC 2 PnP */
  150  {{ USB_DEVICE(0x08dd, 0x0986) }, 0 },    /* Billionton USB100N */
  151  {{ USB_DEVICE(0x08dd, 0x0987) }, PNA },  /* Billionton USB100LP */
  152  {{ USB_DEVICE(0x08dd, 0x0988) }, 0 },    /* Billionton USB100EL */
  153  {{ USB_DEVICE(0x08dd, 0x8511) }, PII },  /* Billionton USBE100 */
  154  {{ USB_DEVICE(0x0951, 0x000a) }, 0 },    /* Kingston KNU101TX */
  155  {{ USB_DEVICE(0x0e66, 0x400c) }, PII },  /* Hawking UF100 */
  156  {{ USB_DEVICE(0x15e8, 0x9100) }, 0 },    /* SOHOware NUB100 */
  157  {{ USB_DEVICE(0x2001, 0x200c) }, LSYS|PII },/* D-Link DSB650TX4 */
  158  {{ USB_DEVICE(0x2001, 0x4001) }, LSYS }, /* D-Link DSB650TX1 */
  159  {{ USB_DEVICE(0x2001, 0x4002) }, LSYS }, /* D-Link DSB650TX */
  160  {{ USB_DEVICE(0x2001, 0x4003) }, PNA },  /* D-Link DSB650TX_PNA */
  161  {{ USB_DEVICE(0x2001, 0x400b) }, LSYS|PII }, /* D-Link DSB650TX3 */
  162  {{ USB_DEVICE(0x2001, 0x4102) }, LSYS|PII }, /* D-Link DSB650TX2 */
  163  {{ USB_DEVICE(0x2001, 0xabc1) }, LSYS }, /* D-Link DSB650 */
  164 };
  165 #define aue_lookup(v, p) ((const struct aue_type *)usb_lookup(aue_devs, v, p))
  166 
  167 static int aue_match(device_t);
  168 static int aue_attach(device_t);
  169 static int aue_detach(device_t);
  170 
  171 static void aue_reset_pegasus_II(struct aue_softc *sc);
  172 static int aue_tx_list_init(struct aue_softc *);
  173 static int aue_rx_list_init(struct aue_softc *);
  174 static int aue_newbuf(struct aue_softc *, struct aue_chain *, struct mbuf *);
  175 static int aue_encap(struct aue_softc *, struct mbuf *, int);
  176 #ifdef AUE_INTR_PIPE
  177 static void aue_intr(usbd_xfer_handle, usbd_private_handle, usbd_status);
  178 #endif
  179 static void aue_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
  180 static void aue_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
  181 static void aue_tick(void *);
  182 static void aue_rxstart(struct ifnet *);
  183 static void aue_start(struct ifnet *, struct ifaltq_subque *);
  184 static int aue_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
  185 static void aue_init(void *);
  186 static void aue_stop(struct aue_softc *);
  187 static void aue_watchdog(struct ifnet *);
  188 static void aue_shutdown(device_t);
  189 static int aue_ifmedia_upd(struct ifnet *);
  190 static void aue_ifmedia_sts(struct ifnet *, struct ifmediareq *);
  191 
  192 static void aue_eeprom_getword(struct aue_softc *, int, u_int16_t *);
  193 static void aue_read_eeprom(struct aue_softc *, caddr_t, int, int, int);
  194 static int aue_miibus_readreg(device_t, int, int);
  195 static int aue_miibus_writereg(device_t, int, int, int);
  196 static void aue_miibus_statchg(device_t);
  197 
  198 static void aue_setmulti(struct aue_softc *);
  199 static void aue_reset(struct aue_softc *);
  200 
  201 static int aue_csr_read_1(struct aue_softc *, int);
  202 static int aue_csr_write_1(struct aue_softc *, int, int);
  203 static int aue_csr_read_2(struct aue_softc *, int);
  204 static int aue_csr_write_2(struct aue_softc *, int, int);
  205 
  206 static device_method_t aue_methods[] = {
  207         /* Device interface */
  208         DEVMETHOD(device_probe,         aue_match),
  209         DEVMETHOD(device_attach,        aue_attach),
  210         DEVMETHOD(device_detach,        aue_detach),
  211         DEVMETHOD(device_shutdown,      aue_shutdown),
  212 
  213         /* bus interface */
  214         DEVMETHOD(bus_print_child,      bus_generic_print_child),
  215         DEVMETHOD(bus_driver_added,     bus_generic_driver_added),
  216 
  217         /* MII interface */
  218         DEVMETHOD(miibus_readreg,       aue_miibus_readreg),
  219         DEVMETHOD(miibus_writereg,      aue_miibus_writereg),
  220         DEVMETHOD(miibus_statchg,       aue_miibus_statchg),
  221 
  222         DEVMETHOD_END
  223 };
  224 
  225 static driver_t aue_driver = {
  226         "aue",
  227         aue_methods,
  228         sizeof(struct aue_softc)
  229 };
  230 
  231 static devclass_t aue_devclass;
  232 
  233 DECLARE_DUMMY_MODULE(if_aue);
  234 DRIVER_MODULE(aue, uhub, aue_driver, aue_devclass, usbd_driver_load, NULL);
  235 DRIVER_MODULE(miibus, aue, miibus_driver, miibus_devclass, NULL, NULL);
  236 
  237 #define AUE_SETBIT(sc, reg, x)                          \
  238         aue_csr_write_1(sc, reg, aue_csr_read_1(sc, reg) | (x))
  239 
  240 #define AUE_CLRBIT(sc, reg, x)                          \
  241         aue_csr_write_1(sc, reg, aue_csr_read_1(sc, reg) & ~(x))
  242 
  243 static int
  244 aue_csr_read_1(struct aue_softc *sc, int reg)
  245 {
  246         usb_device_request_t    req;
  247         usbd_status             err;
  248         u_int8_t                val = 0;
  249 
  250         if (sc->aue_dying)
  251                 return(0);
  252 
  253         AUE_LOCK(sc);
  254 
  255         req.bmRequestType = UT_READ_VENDOR_DEVICE;
  256         req.bRequest = AUE_UR_READREG;
  257         USETW(req.wValue, 0);
  258         USETW(req.wIndex, reg);
  259         USETW(req.wLength, 1);
  260 
  261         err = usbd_do_request(sc->aue_udev, &req, &val);
  262 
  263         AUE_UNLOCK(sc);
  264 
  265         if (err) {
  266                 return (0);
  267         }
  268 
  269         return (val);
  270 }
  271 
  272 static int
  273 aue_csr_read_2(struct aue_softc *sc, int reg)
  274 {
  275         usb_device_request_t    req;
  276         usbd_status             err;
  277         u_int16_t               val = 0;
  278 
  279         if (sc->aue_dying)
  280                 return (0);
  281 
  282         AUE_LOCK(sc);
  283 
  284         req.bmRequestType = UT_READ_VENDOR_DEVICE;
  285         req.bRequest = AUE_UR_READREG;
  286         USETW(req.wValue, 0);
  287         USETW(req.wIndex, reg);
  288         USETW(req.wLength, 2);
  289 
  290         err = usbd_do_request(sc->aue_udev, &req, &val);
  291 
  292         AUE_UNLOCK(sc);
  293 
  294         if (err) {
  295                 return (0);
  296         }
  297 
  298         return (val);
  299 }
  300 
  301 static int
  302 aue_csr_write_1(struct aue_softc *sc, int reg, int val)
  303 {
  304         usb_device_request_t    req;
  305         usbd_status             err;
  306 
  307         if (sc->aue_dying)
  308                 return (0);
  309 
  310         AUE_LOCK(sc);
  311 
  312         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
  313         req.bRequest = AUE_UR_WRITEREG;
  314         USETW(req.wValue, val);
  315         USETW(req.wIndex, reg);
  316         USETW(req.wLength, 1);
  317 
  318         err = usbd_do_request(sc->aue_udev, &req, &val);
  319 
  320         AUE_UNLOCK(sc);
  321 
  322         if (err) {
  323                 return (-1);
  324         }
  325 
  326         return (0);
  327 }
  328 
  329 static int
  330 aue_csr_write_2(struct aue_softc *sc, int reg, int val)
  331 {
  332         usb_device_request_t    req;
  333         usbd_status             err;
  334 
  335         if (sc->aue_dying)
  336                 return (0);
  337 
  338         AUE_LOCK(sc);
  339 
  340         req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
  341         req.bRequest = AUE_UR_WRITEREG;
  342         USETW(req.wValue, val);
  343         USETW(req.wIndex, reg);
  344         USETW(req.wLength, 2);
  345 
  346         err = usbd_do_request(sc->aue_udev, &req, &val);
  347 
  348         AUE_UNLOCK(sc);
  349 
  350         if (err) {
  351                 return (-1);
  352         }
  353 
  354         return (0);
  355 }
  356 
  357 /*
  358  * Read a word of data stored in the EEPROM at address 'addr.'
  359  */
  360 static void
  361 aue_eeprom_getword(struct aue_softc *sc, int addr, u_int16_t *dest)
  362 {
  363         int             i;
  364         u_int16_t       word = 0;
  365 
  366         aue_csr_write_1(sc, AUE_EE_REG, addr);
  367         aue_csr_write_1(sc, AUE_EE_CTL, AUE_EECTL_READ);
  368 
  369         for (i = 0; i < AUE_TIMEOUT; i++) {
  370                 if (aue_csr_read_1(sc, AUE_EE_CTL) & AUE_EECTL_DONE)
  371                         break;
  372         }
  373 
  374         if (i == AUE_TIMEOUT)
  375                 if_printf(&sc->arpcom.ac_if, "EEPROM read timed out\n");
  376 
  377         word = aue_csr_read_2(sc, AUE_EE_DATA);
  378         *dest = word;
  379 
  380         return;
  381 }
  382 
  383 /*
  384  * Read a sequence of words from the EEPROM.
  385  */
  386 static void
  387 aue_read_eeprom(struct aue_softc *sc, caddr_t dest, int off, int cnt, int swap)
  388 {
  389         int                     i;
  390         u_int16_t               word = 0, *ptr;
  391 
  392         for (i = 0; i < cnt; i++) {
  393                 aue_eeprom_getword(sc, off + i, &word);
  394                 ptr = (u_int16_t *)(dest + (i * 2));
  395                 if (swap)
  396                         *ptr = ntohs(word);
  397                 else
  398                         *ptr = word;
  399         }
  400 
  401         return;
  402 }
  403 
  404 static int
  405 aue_miibus_readreg(device_t dev, int phy, int reg)
  406 {
  407         struct aue_softc        *sc = device_get_softc(dev);
  408         int                     i;
  409         u_int16_t               val = 0;
  410 
  411         /*
  412          * The Am79C901 HomePNA PHY actually contains
  413          * two transceivers: a 1Mbps HomePNA PHY and a
  414          * 10Mbps full/half duplex ethernet PHY with
  415          * NWAY autoneg. However in the ADMtek adapter,
  416          * only the 1Mbps PHY is actually connected to
  417          * anything, so we ignore the 10Mbps one. It
  418          * happens to be configured for MII address 3,
  419          * so we filter that out.
  420          */
  421         if (sc->aue_vendor == 0x07a6 && sc->aue_product == 0x0986) {
  422                 if (phy == 3)
  423                         return (0);
  424 #ifdef notdef
  425                 if (phy != 1)
  426                         return (0);
  427 #endif
  428         }
  429 
  430         aue_csr_write_1(sc, AUE_PHY_ADDR, phy);
  431         aue_csr_write_1(sc, AUE_PHY_CTL, reg | AUE_PHYCTL_READ);
  432 
  433         for (i = 0; i < AUE_TIMEOUT; i++) {
  434                 if (aue_csr_read_1(sc, AUE_PHY_CTL) & AUE_PHYCTL_DONE)
  435                         break;
  436         }
  437 
  438         if (i == AUE_TIMEOUT)
  439                 if_printf(&sc->arpcom.ac_if, "MII read timed out\n");
  440 
  441         val = aue_csr_read_2(sc, AUE_PHY_DATA);
  442 
  443         return (val);
  444 }
  445 
  446 static int
  447 aue_miibus_writereg(device_t dev, int phy, int reg, int data)
  448 {
  449         struct aue_softc        *sc = device_get_softc(dev);
  450         int                     i;
  451 
  452         if (phy == 3)
  453                 return (0);
  454 
  455         aue_csr_write_2(sc, AUE_PHY_DATA, data);
  456         aue_csr_write_1(sc, AUE_PHY_ADDR, phy);
  457         aue_csr_write_1(sc, AUE_PHY_CTL, reg | AUE_PHYCTL_WRITE);
  458 
  459         for (i = 0; i < AUE_TIMEOUT; i++) {
  460                 if (aue_csr_read_1(sc, AUE_PHY_CTL) & AUE_PHYCTL_DONE)
  461                         break;
  462         }
  463 
  464         if (i == AUE_TIMEOUT)
  465                 if_printf(&sc->arpcom.ac_if, "MII read timed out\n");
  466 
  467         return(0);
  468 }
  469 
  470 static void
  471 aue_miibus_statchg(device_t dev)
  472 {
  473         struct aue_softc        *sc = device_get_softc(dev);
  474         struct mii_data         *mii = GET_MII(sc);
  475 
  476         AUE_CLRBIT(sc, AUE_CTL0, AUE_CTL0_RX_ENB | AUE_CTL0_TX_ENB);
  477         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX) {
  478                 AUE_SETBIT(sc, AUE_CTL1, AUE_CTL1_SPEEDSEL);
  479         } else {
  480                 AUE_CLRBIT(sc, AUE_CTL1, AUE_CTL1_SPEEDSEL);
  481         }
  482 
  483         if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX)
  484                 AUE_SETBIT(sc, AUE_CTL1, AUE_CTL1_DUPLEX);
  485         else
  486                 AUE_CLRBIT(sc, AUE_CTL1, AUE_CTL1_DUPLEX);
  487 
  488         AUE_SETBIT(sc, AUE_CTL0, AUE_CTL0_RX_ENB | AUE_CTL0_TX_ENB);
  489 
  490         /*
  491          * Set the LED modes on the LinkSys adapter.
  492          * This turns on the 'dual link LED' bin in the auxmode
  493          * register of the Broadcom PHY.
  494          */
  495         if (sc->aue_flags & LSYS) {
  496                 u_int16_t auxmode;
  497                 auxmode = aue_miibus_readreg(dev, 0, 0x1b);
  498                 aue_miibus_writereg(dev, 0, 0x1b, auxmode | 0x04);
  499         }
  500 
  501         return;
  502 }
  503 
  504 #define AUE_BITS        6
  505 
  506 static void
  507 aue_setmulti(struct aue_softc *sc)
  508 {
  509         struct ifnet            *ifp;
  510         struct ifmultiaddr      *ifma;
  511         u_int32_t               h = 0, i;
  512 
  513         ifp = &sc->arpcom.ac_if;
  514 
  515         if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
  516                 AUE_SETBIT(sc, AUE_CTL0, AUE_CTL0_ALLMULTI);
  517                 return;
  518         }
  519 
  520         AUE_CLRBIT(sc, AUE_CTL0, AUE_CTL0_ALLMULTI);
  521 
  522         /* first, zot all the existing hash bits */
  523         for (i = 0; i < 8; i++)
  524                 aue_csr_write_1(sc, AUE_MAR0 + i, 0);
  525 
  526         /* now program new ones */
  527         TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link)
  528         {
  529                 if (ifma->ifma_addr->sa_family != AF_LINK)
  530                         continue;
  531                 h = ether_crc32_le(LLADDR((struct sockaddr_dl *)
  532                     ifma->ifma_addr), ETHER_ADDR_LEN) & ((1 << AUE_BITS) - 1);
  533                 AUE_SETBIT(sc, AUE_MAR + (h >> 3), 1 << (h & 0x7));
  534         }
  535 
  536         return;
  537 }
  538 
  539 static void
  540 aue_reset_pegasus_II(struct aue_softc *sc)
  541 {
  542         /* Magic constants taken from Linux driver. */
  543         aue_csr_write_1(sc, AUE_REG_1D, 0);
  544         aue_csr_write_1(sc, AUE_REG_7B, 2);
  545 #if 0
  546         if ((sc->aue_flags & HAS_HOME_PNA) && mii_mode)
  547                 aue_csr_write_1(sc, AUE_REG_81, 6);
  548         else
  549 #endif
  550                 aue_csr_write_1(sc, AUE_REG_81, 2);
  551 }
  552 
  553 static void
  554 aue_reset(struct aue_softc *sc)
  555 {
  556         int             i;
  557 
  558         AUE_SETBIT(sc, AUE_CTL1, AUE_CTL1_RESETMAC);
  559 
  560         for (i = 0; i < AUE_TIMEOUT; i++) {
  561                 if (!(aue_csr_read_1(sc, AUE_CTL1) & AUE_CTL1_RESETMAC))
  562                         break;
  563         }
  564 
  565         if (i == AUE_TIMEOUT)
  566                 if_printf(&sc->arpcom.ac_if, "reset failed\n");
  567 
  568         /*
  569          * The PHY(s) attached to the Pegasus chip may be held
  570          * in reset until we flip on the GPIO outputs. Make sure
  571          * to set the GPIO pins high so that the PHY(s) will
  572          * be enabled.
  573          *
  574          * Note: We force all of the GPIO pins low first, *then*
  575          * enable the ones we want.
  576          */
  577         aue_csr_write_1(sc, AUE_GPIO0, AUE_GPIO_OUT0|AUE_GPIO_SEL0);
  578         aue_csr_write_1(sc, AUE_GPIO0, AUE_GPIO_OUT0|AUE_GPIO_SEL0|AUE_GPIO_SEL1);
  579 
  580         if (sc->aue_flags & LSYS) {
  581                 /* Grrr. LinkSys has to be different from everyone else. */
  582                 aue_csr_write_1(sc, AUE_GPIO0,
  583                     AUE_GPIO_SEL0 | AUE_GPIO_SEL1);
  584                 aue_csr_write_1(sc, AUE_GPIO0,
  585                     AUE_GPIO_SEL0 | AUE_GPIO_SEL1 | AUE_GPIO_OUT0);
  586         }
  587 
  588         if (sc->aue_flags & PII)
  589                 aue_reset_pegasus_II(sc);
  590 
  591         /* Wait a little while for the chip to get its brains in order. */
  592         DELAY(10000);
  593 
  594         return;
  595 }
  596 
  597 /*
  598  * Probe for a Pegasus chip.
  599  */
  600 static int
  601 aue_match(device_t self)
  602 {
  603         struct usb_attach_arg *uaa = device_get_ivars(self);
  604 
  605         if (uaa->iface != NULL)
  606                 return (UMATCH_NONE);
  607 
  608         return (aue_lookup(uaa->vendor, uaa->product) != NULL ?
  609                 UMATCH_VENDOR_PRODUCT : UMATCH_NONE);
  610 }
  611 
  612 /*
  613  * Attach the interface. Allocate softc structures, do ifmedia
  614  * setup and ethernet/BPF attach.
  615  */
  616 static int
  617 aue_attach(device_t self)
  618 {
  619         struct aue_softc *sc = device_get_softc(self);
  620         struct usb_attach_arg *uaa = device_get_ivars(self);
  621         u_char                  eaddr[ETHER_ADDR_LEN];
  622         struct ifnet            *ifp;
  623         usbd_interface_handle   iface;
  624         usbd_status             err;
  625         usb_interface_descriptor_t      *id;
  626         usb_endpoint_descriptor_t       *ed;
  627         int                     i;
  628 
  629         sc->aue_udev = uaa->device;
  630         callout_init(&sc->aue_stat_timer);
  631 
  632         if (usbd_set_config_no(sc->aue_udev, AUE_CONFIG_NO, 0)) {
  633                 device_printf(self, "setting config no %d failed\n",
  634                               AUE_CONFIG_NO);
  635                 return ENXIO;
  636         }
  637 
  638         err = usbd_device2interface_handle(uaa->device, AUE_IFACE_IDX, &iface);
  639         if (err) {
  640                 device_printf(self, "getting interface handle failed\n");
  641                 return ENXIO;
  642         }
  643 
  644         sc->aue_iface = iface;
  645         sc->aue_flags = aue_lookup(uaa->vendor, uaa->product)->aue_flags;
  646 
  647         sc->aue_product = uaa->product;
  648         sc->aue_vendor = uaa->vendor;
  649 
  650         id = usbd_get_interface_descriptor(sc->aue_iface);
  651 
  652         /* Find endpoints. */
  653         for (i = 0; i < id->bNumEndpoints; i++) {
  654                 ed = usbd_interface2endpoint_descriptor(iface, i);
  655                 if (ed == NULL) {
  656                         device_printf(self, "couldn't get ep %d\n", i);
  657                         return ENXIO;
  658                 }
  659                 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
  660                     UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
  661                         sc->aue_ed[AUE_ENDPT_RX] = ed->bEndpointAddress;
  662                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
  663                            UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
  664                         sc->aue_ed[AUE_ENDPT_TX] = ed->bEndpointAddress;
  665                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
  666                            UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
  667                         sc->aue_ed[AUE_ENDPT_INTR] = ed->bEndpointAddress;
  668                 }
  669         }
  670 
  671         AUE_LOCK(sc);
  672 
  673         ifp = &sc->arpcom.ac_if;
  674         if_initname(ifp, device_get_name(self), device_get_unit(self));
  675 
  676         /* Reset the adapter. */
  677         aue_reset(sc);
  678 
  679         /*
  680          * Get station address from the EEPROM.
  681          */
  682         aue_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 0);
  683 
  684         ifp->if_softc = sc;
  685         ifp->if_mtu = ETHERMTU;
  686         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
  687         ifp->if_ioctl = aue_ioctl;
  688         ifp->if_start = aue_start;
  689         ifp->if_watchdog = aue_watchdog;
  690         ifp->if_init = aue_init;
  691         ifp->if_baudrate = 10000000;
  692         ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
  693         ifq_set_ready(&ifp->if_snd);
  694 
  695         /*
  696          * Do MII setup.
  697          * NOTE: Doing this causes child devices to be attached to us,
  698          * which we would normally disconnect at in the detach routine
  699          * using device_delete_child(). However the USB code is set up
  700          * such that when this driver is removed, all children devices
  701          * are removed as well. In effect, the USB code ends up detaching
  702          * all of our children for us, so we don't have to do is ourselves
  703          * in aue_detach(). It's important to point this out since if
  704          * we *do* try to detach the child devices ourselves, we will
  705          * end up getting the children deleted twice, which will crash
  706          * the system.
  707          */
  708         if (mii_phy_probe(self, &sc->aue_miibus,
  709             aue_ifmedia_upd, aue_ifmedia_sts)) {
  710                 device_printf(self, "MII without any PHY!\n");
  711                 AUE_UNLOCK(sc);
  712                 return ENXIO;
  713         }
  714 
  715         /*
  716          * Call MI attach routine.
  717          */
  718         ether_ifattach(ifp, eaddr, NULL);
  719         usb_register_netisr();
  720         sc->aue_dying = 0;
  721 
  722         AUE_UNLOCK(sc);
  723         return 0;
  724 }
  725 
  726 static int
  727 aue_detach(device_t dev)
  728 {
  729         struct aue_softc        *sc;
  730         struct ifnet            *ifp;
  731 
  732         sc = device_get_softc(dev);
  733         AUE_LOCK(sc);
  734         ifp = &sc->arpcom.ac_if;
  735 
  736         sc->aue_dying = 1;
  737         callout_stop(&sc->aue_stat_timer);
  738         ether_ifdetach(ifp);
  739 
  740         if (sc->aue_ep[AUE_ENDPT_TX] != NULL)
  741                 usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_TX]);
  742         if (sc->aue_ep[AUE_ENDPT_RX] != NULL)
  743                 usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_RX]);
  744 #ifdef AUE_INTR_PIPE
  745         if (sc->aue_ep[AUE_ENDPT_INTR] != NULL)
  746                 usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_INTR]);
  747 #endif
  748 
  749         AUE_UNLOCK(sc);
  750 
  751         return (0);
  752 }
  753 
  754 /*
  755  * Initialize an RX descriptor and attach an MBUF cluster.
  756  */
  757 static int
  758 aue_newbuf(struct aue_softc *sc, struct aue_chain *c, struct mbuf *m)
  759 {
  760         struct mbuf             *m_new = NULL;
  761 
  762         if (m == NULL) {
  763                 m_new = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
  764                 if (m_new == NULL) {
  765                         if_printf(&sc->arpcom.ac_if,
  766                             "no memory for rx list -- packet dropped!\n");
  767                         return (ENOBUFS);
  768                 }
  769                 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
  770         } else {
  771                 m_new = m;
  772                 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
  773                 m_new->m_data = m_new->m_ext.ext_buf;
  774         }
  775 
  776         m_adj(m_new, ETHER_ALIGN);
  777         c->aue_mbuf = m_new;
  778 
  779         return (0);
  780 }
  781 
  782 static int
  783 aue_rx_list_init(struct aue_softc *sc)
  784 {
  785         struct aue_cdata        *cd;
  786         struct aue_chain        *c;
  787         int                     i;
  788 
  789         cd = &sc->aue_cdata;
  790         for (i = 0; i < AUE_RX_LIST_CNT; i++) {
  791                 c = &cd->aue_rx_chain[i];
  792                 c->aue_sc = sc;
  793                 c->aue_idx = i;
  794                 if (aue_newbuf(sc, c, NULL) == ENOBUFS)
  795                         return (ENOBUFS);
  796                 if (c->aue_xfer == NULL) {
  797                         c->aue_xfer = usbd_alloc_xfer(sc->aue_udev);
  798                         if (c->aue_xfer == NULL)
  799                                 return (ENOBUFS);
  800                 }
  801         }
  802 
  803         return (0);
  804 }
  805 
  806 static int
  807 aue_tx_list_init(struct aue_softc *sc)
  808 {
  809         struct aue_cdata        *cd;
  810         struct aue_chain        *c;
  811         int                     i;
  812 
  813         cd = &sc->aue_cdata;
  814         for (i = 0; i < AUE_TX_LIST_CNT; i++) {
  815                 c = &cd->aue_tx_chain[i];
  816                 c->aue_sc = sc;
  817                 c->aue_idx = i;
  818                 c->aue_mbuf = NULL;
  819                 if (c->aue_xfer == NULL) {
  820                         c->aue_xfer = usbd_alloc_xfer(sc->aue_udev);
  821                         if (c->aue_xfer == NULL)
  822                                 return (ENOBUFS);
  823                 }
  824                 c->aue_buf = kmalloc(AUE_BUFSZ, M_USBDEV, M_WAITOK);
  825         }
  826 
  827         return (0);
  828 }
  829 
  830 #ifdef AUE_INTR_PIPE
  831 static void
  832 aue_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
  833 {
  834         struct aue_softc        *sc = priv;
  835         struct ifnet            *ifp;
  836         struct aue_intrpkt      *p;
  837 
  838         AUE_LOCK(sc);
  839         ifp = &sc->arpcom.ac_if;
  840 
  841         if (!(ifp->if_flags & IFF_RUNNING)) {
  842                 AUE_UNLOCK(sc);
  843                 return;
  844         }
  845 
  846         if (status != USBD_NORMAL_COMPLETION) {
  847                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
  848                         AUE_UNLOCK(sc);
  849                         return;
  850                 }
  851                 if_printf(ifp, "usb error on intr: %s\n", usbd_errstr(status));
  852                 if (status == USBD_STALLED)
  853                         usbd_clear_endpoint_stall(sc->aue_ep[AUE_ENDPT_RX]);
  854                 AUE_UNLOCK(sc);
  855                 return;
  856         }
  857 
  858         usbd_get_xfer_status(xfer, NULL, (void **)&p, NULL, NULL);
  859 
  860         if (p->aue_txstat0)
  861                 ifp->if_oerrors++;
  862 
  863         if (p->aue_txstat0 & (AUE_TXSTAT0_LATECOLL & AUE_TXSTAT0_EXCESSCOLL))
  864                 ifp->if_collisions++;
  865 
  866         AUE_UNLOCK(sc);
  867         return;
  868 }
  869 #endif
  870 
  871 static void
  872 aue_rxstart(struct ifnet *ifp)
  873 {
  874         struct aue_softc        *sc;
  875         struct aue_chain        *c;
  876 
  877         sc = ifp->if_softc;
  878         AUE_LOCK(sc);
  879         c = &sc->aue_cdata.aue_rx_chain[sc->aue_cdata.aue_rx_prod];
  880 
  881         if (aue_newbuf(sc, c, NULL) == ENOBUFS) {
  882                 IFNET_STAT_INC(ifp, ierrors, 1);
  883                 AUE_UNLOCK(sc);
  884                 return;
  885         }
  886 
  887         /* Setup new transfer. */
  888         usbd_setup_xfer(c->aue_xfer, sc->aue_ep[AUE_ENDPT_RX],
  889             c, mtod(c->aue_mbuf, char *), AUE_BUFSZ, USBD_SHORT_XFER_OK,
  890             USBD_NO_TIMEOUT, aue_rxeof);
  891         usbd_transfer(c->aue_xfer);
  892 
  893         AUE_UNLOCK(sc);
  894         return;
  895 }
  896 
  897 /*
  898  * A frame has been uploaded: pass the resulting mbuf chain up to
  899  * the higher level protocols.
  900  */
  901 static void
  902 aue_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
  903 {
  904         struct aue_chain        *c = priv;
  905         struct aue_softc        *sc = c->aue_sc;
  906         struct mbuf             *m;
  907         struct ifnet            *ifp;
  908         int                     total_len = 0;
  909         struct aue_rxpkt        r;
  910 
  911         if (sc->aue_dying)
  912                 return;
  913 
  914         ifp = &sc->arpcom.ac_if;
  915 
  916         if (!(ifp->if_flags & IFF_RUNNING))
  917                 return;
  918 
  919         if (status != USBD_NORMAL_COMPLETION) {
  920                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
  921                         return;
  922                 if (usbd_ratecheck(&sc->aue_rx_notice)) {
  923                         if_printf(ifp, "usb error on rx: %s\n",
  924                             usbd_errstr(status));
  925                 }
  926                 if (status == USBD_STALLED)
  927                         usbd_clear_endpoint_stall(sc->aue_ep[AUE_ENDPT_RX]);
  928                 goto done;
  929         }
  930 
  931         usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
  932 
  933         if (total_len <= 4 + ETHER_CRC_LEN) {
  934                 IFNET_STAT_INC(ifp, ierrors, 1);
  935                 goto done;
  936         }
  937 
  938         m = c->aue_mbuf;
  939         bcopy(mtod(m, char *) + total_len - 4, (char *)&r, sizeof(r));
  940 
  941         /* Turn off all the non-error bits in the rx status word. */
  942         r.aue_rxstat &= AUE_RXSTAT_MASK;
  943 
  944         if (r.aue_rxstat) {
  945                 IFNET_STAT_INC(ifp, ierrors, 1);
  946                 goto done;
  947         }
  948 
  949         /* No errors; receive the packet. */
  950         total_len -= (4 + ETHER_CRC_LEN);
  951 
  952         IFNET_STAT_INC(ifp, ipackets, 1);
  953         m->m_pkthdr.rcvif = ifp;
  954         m->m_pkthdr.len = m->m_len = total_len;
  955 
  956         /* Put the packet on the special USB input queue. */
  957         usb_ether_input(m);
  958         aue_rxstart(ifp);
  959         return;
  960 done:
  961 
  962         /* Setup new transfer. */
  963         usbd_setup_xfer(xfer, sc->aue_ep[AUE_ENDPT_RX],
  964             c, mtod(c->aue_mbuf, char *), AUE_BUFSZ, USBD_SHORT_XFER_OK,
  965             USBD_NO_TIMEOUT, aue_rxeof);
  966         usbd_transfer(xfer);
  967 }
  968 
  969 /*
  970  * A frame was downloaded to the chip. It's safe for us to clean up
  971  * the list buffers.
  972  */
  973 static void
  974 aue_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
  975 {
  976         struct aue_chain        *c = priv;
  977         struct aue_softc        *sc = c->aue_sc;
  978         struct ifnet            *ifp;
  979         usbd_status             err;
  980 
  981         ifp = &sc->arpcom.ac_if;
  982 
  983         if (status != USBD_NORMAL_COMPLETION) {
  984                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
  985                         return;
  986                 if_printf(ifp, "usb error on tx: %s\n", usbd_errstr(status));
  987                 if (status == USBD_STALLED)
  988                         usbd_clear_endpoint_stall(sc->aue_ep[AUE_ENDPT_TX]);
  989                 return;
  990         }
  991 
  992         usbd_get_xfer_status(c->aue_xfer, NULL, NULL, NULL, &err);
  993         if (err)
  994                 IFNET_STAT_INC(ifp, oerrors, 1);
  995         else
  996                 IFNET_STAT_INC(ifp, opackets, 1);
  997 
  998         /* XXX should hold serializer */
  999         ifp->if_timer = 0;
 1000         ifq_clr_oactive(&ifp->if_snd);
 1001 
 1002         if (!ifq_is_empty(&ifp->if_snd))
 1003                 if_devstart_sched(ifp);
 1004 }
 1005 
 1006 static void
 1007 aue_tick(void *xsc)
 1008 {
 1009         struct aue_softc        *sc = xsc;
 1010         struct ifnet            *ifp;
 1011         struct mii_data         *mii;
 1012 
 1013         if (sc == NULL)
 1014                 return;
 1015 
 1016         ifp = &sc->arpcom.ac_if;
 1017 
 1018         lwkt_serialize_enter(ifp->if_serializer);
 1019 
 1020         mii = GET_MII(sc);
 1021         if (mii == NULL) {
 1022                 lwkt_serialize_exit(ifp->if_serializer);
 1023                 return;
 1024         }
 1025 
 1026         mii_tick(mii);
 1027         if (!sc->aue_link && mii->mii_media_status & IFM_ACTIVE &&
 1028             IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
 1029                 sc->aue_link++;
 1030                 if (!ifq_is_empty(&ifp->if_snd))
 1031                         if_devstart_sched(ifp);
 1032         }
 1033 
 1034         callout_reset(&sc->aue_stat_timer, hz, aue_tick, sc);
 1035 
 1036         lwkt_serialize_exit(ifp->if_serializer);
 1037 }
 1038 
 1039 static int
 1040 aue_encap(struct aue_softc *sc, struct mbuf *m, int idx)
 1041 {
 1042         int                     total_len;
 1043         struct aue_chain        *c;
 1044         usbd_status             err;
 1045 
 1046         c = &sc->aue_cdata.aue_tx_chain[idx];
 1047 
 1048         /*
 1049          * Copy the mbuf data into a contiguous buffer, leaving two
 1050          * bytes at the beginning to hold the frame length.
 1051          */
 1052         m_copydata(m, 0, m->m_pkthdr.len, c->aue_buf + 2);
 1053         c->aue_mbuf = m;
 1054 
 1055         total_len = m->m_pkthdr.len + 2;
 1056 
 1057         /*
 1058          * The ADMtek documentation says that the packet length is
 1059          * supposed to be specified in the first two bytes of the
 1060          * transfer, however it actually seems to ignore this info
 1061          * and base the frame size on the bulk transfer length.
 1062          */
 1063         c->aue_buf[0] = (u_int8_t)m->m_pkthdr.len;
 1064         c->aue_buf[1] = (u_int8_t)(m->m_pkthdr.len >> 8);
 1065 
 1066         m_freem(c->aue_mbuf);
 1067         c->aue_mbuf = NULL;
 1068         m = NULL;
 1069 
 1070         usbd_setup_xfer(c->aue_xfer, sc->aue_ep[AUE_ENDPT_TX],
 1071             c, c->aue_buf, total_len, USBD_FORCE_SHORT_XFER,
 1072             10000, aue_txeof);
 1073 
 1074         /* Transmit */
 1075         err = usbd_transfer(c->aue_xfer);
 1076         if (err != USBD_IN_PROGRESS) {
 1077                 aue_stop(sc);
 1078                 return (EIO);
 1079         }
 1080 
 1081         sc->aue_cdata.aue_tx_cnt++;
 1082 
 1083         return (0);
 1084 }
 1085 
 1086 static void
 1087 aue_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
 1088 {
 1089         struct aue_softc        *sc = ifp->if_softc;
 1090         struct mbuf             *m_head = NULL;
 1091 
 1092         ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq);
 1093         AUE_LOCK(sc);
 1094 
 1095         if (!sc->aue_link) {
 1096                 ifq_purge(&ifp->if_snd);
 1097                 AUE_UNLOCK(sc);
 1098                 return;
 1099         }
 1100 
 1101         if ((ifp->if_flags & IFF_RUNNING) == 0 ||
 1102             ifq_is_oactive(&ifp->if_snd)) {
 1103                 AUE_UNLOCK(sc);
 1104                 return;
 1105         }
 1106 
 1107         m_head = ifq_dequeue(&ifp->if_snd);
 1108         if (m_head == NULL) {
 1109                 AUE_UNLOCK(sc);
 1110                 return;
 1111         }
 1112 
 1113         if (aue_encap(sc, m_head, 0)) {
 1114                 /* aue_encap() will free m_head, if we reach here */
 1115                 ifq_set_oactive(&ifp->if_snd);
 1116                 AUE_UNLOCK(sc);
 1117                 return;
 1118         }
 1119 
 1120         /*
 1121          * If there's a BPF listener, bounce a copy of this frame
 1122          * to him.
 1123          */
 1124         BPF_MTAP(ifp, m_head);
 1125 
 1126         ifq_set_oactive(&ifp->if_snd);
 1127 
 1128         /*
 1129          * Set a timeout in case the chip goes out to lunch.
 1130          */
 1131         ifp->if_timer = 5;
 1132         AUE_UNLOCK(sc);
 1133 
 1134         return;
 1135 }
 1136 
 1137 static void
 1138 aue_init(void *xsc)
 1139 {
 1140         struct aue_softc        *sc = xsc;
 1141         struct ifnet            *ifp = &sc->arpcom.ac_if;
 1142         struct mii_data         *mii = GET_MII(sc);
 1143         struct aue_chain        *c;
 1144         usbd_status             err;
 1145         int                     i;
 1146 
 1147         AUE_LOCK(sc);
 1148 
 1149         if (ifp->if_flags & IFF_RUNNING) {
 1150                 AUE_UNLOCK(sc);
 1151                 return;
 1152         }
 1153 
 1154         /*
 1155          * Cancel pending I/O and free all RX/TX buffers.
 1156          */
 1157         aue_reset(sc);
 1158 
 1159         /* Set MAC address */
 1160         for (i = 0; i < ETHER_ADDR_LEN; i++)
 1161                 aue_csr_write_1(sc, AUE_PAR0 + i, sc->arpcom.ac_enaddr[i]);
 1162 
 1163          /* If we want promiscuous mode, set the allframes bit. */
 1164         if (ifp->if_flags & IFF_PROMISC)
 1165                 AUE_SETBIT(sc, AUE_CTL2, AUE_CTL2_RX_PROMISC);
 1166         else
 1167                 AUE_CLRBIT(sc, AUE_CTL2, AUE_CTL2_RX_PROMISC);
 1168 
 1169         /* Init TX ring. */
 1170         if (aue_tx_list_init(sc) == ENOBUFS) {
 1171                 if_printf(&sc->arpcom.ac_if, "tx list init failed\n");
 1172                 AUE_UNLOCK(sc);
 1173                 return;
 1174         }
 1175 
 1176         /* Init RX ring. */
 1177         if (aue_rx_list_init(sc) == ENOBUFS) {
 1178                 if_printf(&sc->arpcom.ac_if, "rx list init failed\n");
 1179                 AUE_UNLOCK(sc);
 1180                 return;
 1181         }
 1182 
 1183 #ifdef AUE_INTR_PIPE
 1184         sc->aue_cdata.aue_ibuf = kmalloc(AUE_INTR_PKTLEN, M_USBDEV, M_WAITOK);
 1185 #endif
 1186 
 1187         /* Load the multicast filter. */
 1188         aue_setmulti(sc);
 1189 
 1190         /* Enable RX and TX */
 1191         aue_csr_write_1(sc, AUE_CTL0, AUE_CTL0_RXSTAT_APPEND | AUE_CTL0_RX_ENB);
 1192         AUE_SETBIT(sc, AUE_CTL0, AUE_CTL0_TX_ENB);
 1193         AUE_SETBIT(sc, AUE_CTL2, AUE_CTL2_EP3_CLR);
 1194 
 1195         mii_mediachg(mii);
 1196 
 1197         /* Open RX and TX pipes. */
 1198         err = usbd_open_pipe(sc->aue_iface, sc->aue_ed[AUE_ENDPT_RX],
 1199             USBD_EXCLUSIVE_USE, &sc->aue_ep[AUE_ENDPT_RX]);
 1200         if (err) {
 1201                 if_printf(&sc->arpcom.ac_if, "open rx pipe failed: %s\n",
 1202                     usbd_errstr(err));
 1203                 AUE_UNLOCK(sc);
 1204                 return;
 1205         }
 1206         err = usbd_open_pipe(sc->aue_iface, sc->aue_ed[AUE_ENDPT_TX],
 1207             USBD_EXCLUSIVE_USE, &sc->aue_ep[AUE_ENDPT_TX]);
 1208         if (err) {
 1209                 if_printf(&sc->arpcom.ac_if, "open tx pipe failed: %s\n",
 1210                     usbd_errstr(err));
 1211                 AUE_UNLOCK(sc);
 1212                 return;
 1213         }
 1214 
 1215 #ifdef AUE_INTR_PIPE
 1216         err = usbd_open_pipe_intr(sc->aue_iface, sc->aue_ed[AUE_ENDPT_INTR],
 1217             USBD_SHORT_XFER_OK, &sc->aue_ep[AUE_ENDPT_INTR], sc,
 1218             sc->aue_cdata.aue_ibuf, AUE_INTR_PKTLEN, aue_intr,
 1219             AUE_INTR_INTERVAL);
 1220         if (err) {
 1221                 if_printf(&sc->arpcom.ac_if, "open intr pipe failed: %s\n",
 1222                     usbd_errstr(err));
 1223                 AUE_UNLOCK(sc);
 1224                 return;
 1225         }
 1226 #endif
 1227 
 1228         /* Start up the receive pipe. */
 1229         for (i = 0; i < AUE_RX_LIST_CNT; i++) {
 1230                 c = &sc->aue_cdata.aue_rx_chain[i];
 1231                 usbd_setup_xfer(c->aue_xfer, sc->aue_ep[AUE_ENDPT_RX],
 1232                     c, mtod(c->aue_mbuf, char *), AUE_BUFSZ,
 1233                 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, aue_rxeof);
 1234                 usbd_transfer(c->aue_xfer);
 1235         }
 1236 
 1237         ifp->if_flags |= IFF_RUNNING;
 1238         ifq_clr_oactive(&ifp->if_snd);
 1239 
 1240         callout_reset(&sc->aue_stat_timer, hz, aue_tick, sc);
 1241 
 1242         AUE_UNLOCK(sc);
 1243 
 1244         return;
 1245 }
 1246 
 1247 /*
 1248  * Set media options.
 1249  */
 1250 static int
 1251 aue_ifmedia_upd(struct ifnet *ifp)
 1252 {
 1253         struct aue_softc        *sc = ifp->if_softc;
 1254         struct mii_data         *mii = GET_MII(sc);
 1255 
 1256         sc->aue_link = 0;
 1257         if (mii->mii_instance) {
 1258                 struct mii_softc        *miisc;
 1259                 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
 1260                          mii_phy_reset(miisc);
 1261         }
 1262         mii_mediachg(mii);
 1263 
 1264         return (0);
 1265 }
 1266 
 1267 /*
 1268  * Report current media status.
 1269  */
 1270 static void
 1271 aue_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
 1272 {
 1273         struct aue_softc        *sc = ifp->if_softc;
 1274         struct mii_data         *mii = GET_MII(sc);
 1275 
 1276         mii_pollstat(mii);
 1277         ifmr->ifm_active = mii->mii_media_active;
 1278         ifmr->ifm_status = mii->mii_media_status;
 1279 
 1280         return;
 1281 }
 1282 
 1283 static int
 1284 aue_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
 1285 {
 1286         struct aue_softc        *sc = ifp->if_softc;
 1287         struct ifreq            *ifr = (struct ifreq *)data;
 1288         struct mii_data         *mii;
 1289         int                     error = 0;
 1290 
 1291         AUE_LOCK(sc);
 1292 
 1293         switch(command) {
 1294         case SIOCSIFFLAGS:
 1295                 if (ifp->if_flags & IFF_UP) {
 1296                         if (ifp->if_flags & IFF_RUNNING &&
 1297                             ifp->if_flags & IFF_PROMISC &&
 1298                             !(sc->aue_if_flags & IFF_PROMISC)) {
 1299                                 AUE_SETBIT(sc, AUE_CTL2, AUE_CTL2_RX_PROMISC);
 1300                         } else if (ifp->if_flags & IFF_RUNNING &&
 1301                             !(ifp->if_flags & IFF_PROMISC) &&
 1302                             sc->aue_if_flags & IFF_PROMISC) {
 1303                                 AUE_CLRBIT(sc, AUE_CTL2, AUE_CTL2_RX_PROMISC);
 1304                         } else if (!(ifp->if_flags & IFF_RUNNING))
 1305                                 aue_init(sc);
 1306                 } else {
 1307                         if (ifp->if_flags & IFF_RUNNING)
 1308                                 aue_stop(sc);
 1309                 }
 1310                 sc->aue_if_flags = ifp->if_flags;
 1311                 error = 0;
 1312                 break;
 1313         case SIOCADDMULTI:
 1314         case SIOCDELMULTI:
 1315                 aue_setmulti(sc);
 1316                 error = 0;
 1317                 break;
 1318         case SIOCGIFMEDIA:
 1319         case SIOCSIFMEDIA:
 1320                 mii = GET_MII(sc);
 1321                 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
 1322                 break;
 1323         default:
 1324                 error = ether_ioctl(ifp, command, data);
 1325                 break;
 1326         }
 1327 
 1328         AUE_UNLOCK(sc);
 1329 
 1330         return (error);
 1331 }
 1332 
 1333 static void
 1334 aue_watchdog(struct ifnet *ifp)
 1335 {
 1336         struct aue_softc        *sc = ifp->if_softc;
 1337         struct aue_chain        *c;
 1338         usbd_status             stat;
 1339 
 1340         ASSERT_SERIALIZED(ifp->if_serializer);
 1341 
 1342         IFNET_STAT_INC(ifp, oerrors, 1);
 1343         if_printf(ifp, "watchdog timeout\n");
 1344 
 1345         c = &sc->aue_cdata.aue_tx_chain[0];
 1346         usbd_get_xfer_status(c->aue_xfer, NULL, NULL, NULL, &stat);
 1347         aue_txeof(c->aue_xfer, c, stat);
 1348 }
 1349 
 1350 /*
 1351  * Stop the adapter and free any mbufs allocated to the
 1352  * RX and TX lists.
 1353  */
 1354 static void
 1355 aue_stop(struct aue_softc *sc)
 1356 {
 1357         usbd_status             err;
 1358         struct ifnet            *ifp;
 1359         int                     i;
 1360 
 1361         AUE_LOCK(sc);
 1362         ifp = &sc->arpcom.ac_if;
 1363         ifp->if_timer = 0;
 1364 
 1365         aue_csr_write_1(sc, AUE_CTL0, 0);
 1366         aue_csr_write_1(sc, AUE_CTL1, 0);
 1367         aue_reset(sc);
 1368         callout_stop(&sc->aue_stat_timer);
 1369 
 1370         /* Stop transfers. */
 1371         if (sc->aue_ep[AUE_ENDPT_RX] != NULL) {
 1372                 err = usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_RX]);
 1373                 if (err) {
 1374                         if_printf(ifp, "abort rx pipe failed: %s\n",
 1375                             usbd_errstr(err));
 1376                 }
 1377                 err = usbd_close_pipe(sc->aue_ep[AUE_ENDPT_RX]);
 1378                 if (err) {
 1379                         if_printf(ifp, "close rx pipe failed: %s\n",
 1380                             usbd_errstr(err));
 1381                 }
 1382                 sc->aue_ep[AUE_ENDPT_RX] = NULL;
 1383         }
 1384 
 1385         if (sc->aue_ep[AUE_ENDPT_TX] != NULL) {
 1386                 err = usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_TX]);
 1387                 if (err) {
 1388                         if_printf(ifp, "abort tx pipe failed: %s\n",
 1389                             usbd_errstr(err));
 1390                 }
 1391                 err = usbd_close_pipe(sc->aue_ep[AUE_ENDPT_TX]);
 1392                 if (err) {
 1393                         if_printf(ifp, "close tx pipe failed: %s\n",
 1394                             usbd_errstr(err));
 1395                 }
 1396                 sc->aue_ep[AUE_ENDPT_TX] = NULL;
 1397         }
 1398 
 1399 #ifdef AUE_INTR_PIPE
 1400         if (sc->aue_ep[AUE_ENDPT_INTR] != NULL) {
 1401                 err = usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_INTR]);
 1402                 if (err) {
 1403                         if_printf(ifp, "abort intr pipe failed: %s\n",
 1404                             usbd_errstr(err));
 1405                 }
 1406                 err = usbd_close_pipe(sc->aue_ep[AUE_ENDPT_INTR]);
 1407                 if (err) {
 1408                         if_printf(ifp, "close intr pipe failed: %s\n",
 1409                             usbd_errstr(err));
 1410                 }
 1411                 sc->aue_ep[AUE_ENDPT_INTR] = NULL;
 1412         }
 1413 #endif
 1414 
 1415         /* Free RX resources. */
 1416         for (i = 0; i < AUE_RX_LIST_CNT; i++) {
 1417                 if (sc->aue_cdata.aue_rx_chain[i].aue_buf != NULL) {
 1418                         kfree(sc->aue_cdata.aue_rx_chain[i].aue_buf, M_USBDEV);
 1419                         sc->aue_cdata.aue_rx_chain[i].aue_buf = NULL;
 1420                 }
 1421                 if (sc->aue_cdata.aue_rx_chain[i].aue_mbuf != NULL) {
 1422                         m_freem(sc->aue_cdata.aue_rx_chain[i].aue_mbuf);
 1423                         sc->aue_cdata.aue_rx_chain[i].aue_mbuf = NULL;
 1424                 }
 1425                 if (sc->aue_cdata.aue_rx_chain[i].aue_xfer != NULL) {
 1426                         usbd_free_xfer(sc->aue_cdata.aue_rx_chain[i].aue_xfer);
 1427                         sc->aue_cdata.aue_rx_chain[i].aue_xfer = NULL;
 1428                 }
 1429         }
 1430 
 1431         /* Free TX resources. */
 1432         for (i = 0; i < AUE_TX_LIST_CNT; i++) {
 1433                 if (sc->aue_cdata.aue_tx_chain[i].aue_buf != NULL) {
 1434                         kfree(sc->aue_cdata.aue_tx_chain[i].aue_buf, M_USBDEV);
 1435                         sc->aue_cdata.aue_tx_chain[i].aue_buf = NULL;
 1436                 }
 1437                 if (sc->aue_cdata.aue_tx_chain[i].aue_mbuf != NULL) {
 1438                         m_freem(sc->aue_cdata.aue_tx_chain[i].aue_mbuf);
 1439                         sc->aue_cdata.aue_tx_chain[i].aue_mbuf = NULL;
 1440                 }
 1441                 if (sc->aue_cdata.aue_tx_chain[i].aue_xfer != NULL) {
 1442                         usbd_free_xfer(sc->aue_cdata.aue_tx_chain[i].aue_xfer);
 1443                         sc->aue_cdata.aue_tx_chain[i].aue_xfer = NULL;
 1444                 }
 1445         }
 1446 
 1447 #ifdef AUE_INTR_PIPE
 1448         if (sc->aue_cdata.aue_ibuf != NULL) {
 1449                 kfree(sc->aue_cdata.aue_ibuf, M_USBDEV);
 1450                 sc->aue_cdata.aue_ibuf = NULL;
 1451         }
 1452 #endif
 1453 
 1454         sc->aue_link = 0;
 1455 
 1456         ifp->if_flags &= ~IFF_RUNNING;
 1457         ifq_clr_oactive(&ifp->if_snd);
 1458         AUE_UNLOCK(sc);
 1459 
 1460         return;
 1461 }
 1462 
 1463 /*
 1464  * Stop all chip I/O so that the kernel's probe routines don't
 1465  * get confused by errant DMAs when rebooting.
 1466  */
 1467 static void
 1468 aue_shutdown(device_t dev)
 1469 {
 1470         struct aue_softc        *sc;
 1471         struct ifnet            *ifp;
 1472 
 1473         sc = device_get_softc(dev);
 1474         sc->aue_dying++;
 1475 
 1476         ifp = &sc->arpcom.ac_if;
 1477 
 1478         lwkt_serialize_enter(ifp->if_serializer);
 1479         aue_reset(sc);
 1480         aue_stop(sc);
 1481         lwkt_serialize_exit(ifp->if_serializer);
 1482 }

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