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if_kue.c revision 1.58.10.6
      1 /*	$NetBSD: if_kue.c,v 1.58.10.6 2007/06/25 09:24:07 itohy Exp $	*/
      2 /*
      3  * Copyright (c) 1997, 1998, 1999, 2000
      4  *	Bill Paul <wpaul (at) ee.columbia.edu>.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Bill Paul.
     17  * 4. Neither the name of the author nor the names of any co-contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
     25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     31  * THE POSSIBILITY OF SUCH DAMAGE.
     32  *
     33  * $FreeBSD: src/sys/dev/usb/if_kue.c,v 1.14 2000/01/14 01:36:15 wpaul Exp $
     34  */
     35 
     36 /*
     37  * Kawasaki LSI KL5KUSB101B USB to ethernet adapter driver.
     38  *
     39  * Written by Bill Paul <wpaul (at) ee.columbia.edu>
     40  * Electrical Engineering Department
     41  * Columbia University, New York City
     42  */
     43 
     44 /*
     45  * The KLSI USB to ethernet adapter chip contains an USB serial interface,
     46  * ethernet MAC and embedded microcontroller (called the QT Engine).
     47  * The chip must have firmware loaded into it before it will operate.
     48  * Packets are passed between the chip and host via bulk transfers.
     49  * There is an interrupt endpoint mentioned in the software spec, however
     50  * it's currently unused. This device is 10Mbps half-duplex only, hence
     51  * there is no media selection logic. The MAC supports a 128 entry
     52  * multicast filter, though the exact size of the filter can depend
     53  * on the firmware. Curiously, while the software spec describes various
     54  * ethernet statistics counters, my sample adapter and firmware combination
     55  * claims not to support any statistics counters at all.
     56  *
     57  * Note that once we load the firmware in the device, we have to be
     58  * careful not to load it again: if you restart your computer but
     59  * leave the adapter attached to the USB controller, it may remain
     60  * powered on and retain its firmware. In this case, we don't need
     61  * to load the firmware a second time.
     62  *
     63  * Special thanks to Rob Furr for providing an ADS Technologies
     64  * adapter for development and testing. No monkeys were harmed during
     65  * the development of this driver.
     66  */
     67 
     68 /*
     69  * Ported to NetBSD and somewhat rewritten by Lennart Augustsson.
     70  */
     71 
     72 #include <sys/cdefs.h>
     73 __KERNEL_RCSID(0, "$NetBSD: if_kue.c,v 1.58.10.6 2007/06/25 09:24:07 itohy Exp $");
     74 
     75 #if defined(__NetBSD__)
     76 #include "opt_inet.h"
     77 #include "bpfilter.h"
     78 #include "rnd.h"
     79 #elif defined(__OpenBSD__)
     80 #include "bpfilter.h"
     81 #endif
     82 
     83 #include <sys/param.h>
     84 #include <sys/systm.h>
     85 #include <sys/sockio.h>
     86 #include <sys/mbuf.h>
     87 #include <sys/malloc.h>
     88 #include <sys/kernel.h>
     89 #include <sys/socket.h>
     90 #include <sys/device.h>
     91 #include <sys/proc.h>
     92 
     93 #if NRND > 0
     94 #include <sys/rnd.h>
     95 #endif
     96 
     97 #include <net/if.h>
     98 #if defined(__NetBSD__)
     99 #include <net/if_arp.h>
    100 #endif
    101 #include <net/if_dl.h>
    102 
    103 #if NBPFILTER > 0
    104 #include <net/bpf.h>
    105 #endif
    106 
    107 #if defined(__NetBSD__)
    108 #include <net/if_ether.h>
    109 #ifdef INET
    110 #include <netinet/in.h>
    111 #include <netinet/if_inarp.h>
    112 #endif
    113 #endif /* defined (__NetBSD__) */
    114 
    115 #if defined(__OpenBSD__)
    116 #ifdef INET
    117 #include <netinet/in.h>
    118 #include <netinet/in_systm.h>
    119 #include <netinet/in_var.h>
    120 #include <netinet/ip.h>
    121 #include <netinet/if_ether.h>
    122 #endif
    123 #endif /* defined (__OpenBSD__) */
    124 
    125 
    126 #include <dev/usb/usb.h>
    127 #include <dev/usb/usbdi.h>
    128 #include <dev/usb/usbdi_util.h>
    129 #include <dev/usb/usbdevs.h>
    130 #include <dev/usb/usb_ethersubr.h>
    131 
    132 #include <dev/usb/if_kuereg.h>
    133 #include <dev/usb/kue_fw.h>
    134 
    135 #ifdef KUE_DEBUG
    136 #define DPRINTF(x)	if (kuedebug) logprintf x
    137 #define DPRINTFN(n,x)	if (kuedebug >= (n)) logprintf x
    138 int	kuedebug = 0;
    139 #else
    140 #define DPRINTF(x)
    141 #define DPRINTFN(n,x)
    142 #endif
    143 
    144 /*
    145  * Various supported device vendors/products.
    146  */
    147 Static const struct usb_devno kue_devs[] = {
    148 	{ USB_VENDOR_3COM, USB_PRODUCT_3COM_3C19250 },
    149 	{ USB_VENDOR_3COM, USB_PRODUCT_3COM_3C460 },
    150 	{ USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_URE450 },
    151 	{ USB_VENDOR_ADS, USB_PRODUCT_ADS_UBS10BT },
    152 	{ USB_VENDOR_ADS, USB_PRODUCT_ADS_UBS10BTX },
    153 	{ USB_VENDOR_AOX, USB_PRODUCT_AOX_USB101 },
    154 	{ USB_VENDOR_ASANTE, USB_PRODUCT_ASANTE_EA },
    155 	{ USB_VENDOR_ATEN, USB_PRODUCT_ATEN_UC10T },
    156 	{ USB_VENDOR_ATEN, USB_PRODUCT_ATEN_DSB650C },
    157 	{ USB_VENDOR_COREGA, USB_PRODUCT_COREGA_ETHER_USB_T },
    158 	{ USB_VENDOR_DLINK, USB_PRODUCT_DLINK_DSB650C },
    159 	{ USB_VENDOR_ENTREGA, USB_PRODUCT_ENTREGA_E45 },
    160 	{ USB_VENDOR_ENTREGA, USB_PRODUCT_ENTREGA_XX1 },
    161 	{ USB_VENDOR_ENTREGA, USB_PRODUCT_ENTREGA_XX2 },
    162 	{ USB_VENDOR_IODATA, USB_PRODUCT_IODATA_USBETT },
    163 	{ USB_VENDOR_JATON, USB_PRODUCT_JATON_EDA },
    164 	{ USB_VENDOR_KINGSTON, USB_PRODUCT_KINGSTON_XX1 },
    165 	{ USB_VENDOR_KLSI, USB_PRODUCT_KLSI_DUH3E10BT },
    166 	{ USB_VENDOR_KLSI, USB_PRODUCT_KLSI_DUH3E10BTN },
    167 	{ USB_VENDOR_LINKSYS, USB_PRODUCT_LINKSYS_USB10T },
    168 	{ USB_VENDOR_MOBILITY, USB_PRODUCT_MOBILITY_EA },
    169 	{ USB_VENDOR_NETGEAR, USB_PRODUCT_NETGEAR_EA101 },
    170 	{ USB_VENDOR_NETGEAR, USB_PRODUCT_NETGEAR_EA101X },
    171 	{ USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_ENET },
    172 	{ USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_ENET2 },
    173 	{ USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_ENET3 },
    174 	{ USB_VENDOR_PORTGEAR, USB_PRODUCT_PORTGEAR_EA8 },
    175 	{ USB_VENDOR_PORTGEAR, USB_PRODUCT_PORTGEAR_EA9 },
    176 	{ USB_VENDOR_PORTSMITH, USB_PRODUCT_PORTSMITH_EEA },
    177 	{ USB_VENDOR_SHARK, USB_PRODUCT_SHARK_PA },
    178 	{ USB_VENDOR_SILICOM, USB_PRODUCT_SILICOM_U2E },
    179 	{ USB_VENDOR_SILICOM, USB_PRODUCT_SILICOM_GPE },
    180 	{ USB_VENDOR_SMC, USB_PRODUCT_SMC_2102USB },
    181 };
    182 #define kue_lookup(v, p) (usb_lookup(kue_devs, v, p))
    183 
    184 USB_DECLARE_DRIVER(kue);
    185 
    186 Static int kue_send(struct kue_softc *, struct mbuf *, int);
    187 Static int kue_open_pipes(struct kue_softc *);
    188 Static void kue_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
    189 Static void kue_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
    190 Static void kue_start(struct ifnet *);
    191 Static int kue_ioctl(struct ifnet *, u_long, usb_ioctlarg_t);
    192 Static int kue_init(struct ifnet *);
    193 Static void kue_stop(struct ifnet *, int);
    194 Static void kue_watchdog(struct ifnet *);
    195 
    196 Static void kue_setmulti(struct kue_softc *);
    197 Static void kue_reset(struct kue_softc *);
    198 
    199 Static usbd_status kue_ctl(struct kue_softc *, int, u_int8_t,
    200 			   u_int16_t, void *, u_int32_t);
    201 Static usbd_status kue_setword(struct kue_softc *, u_int8_t, u_int16_t);
    202 Static int kue_load_fw(struct kue_softc *);
    203 
    204 Static usbd_status
    205 kue_setword(struct kue_softc *sc, u_int8_t breq, u_int16_t word)
    206 {
    207 	usb_device_request_t	req;
    208 
    209 	DPRINTFN(10,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__));
    210 
    211 	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
    212 	req.bRequest = breq;
    213 	USETW(req.wValue, word);
    214 	USETW(req.wIndex, 0);
    215 	USETW(req.wLength, 0);
    216 
    217 	return (usbd_do_request(sc->kue_udev, &req, NULL));
    218 }
    219 
    220 Static usbd_status
    221 kue_ctl(struct kue_softc *sc, int rw, u_int8_t breq, u_int16_t val,
    222 	void *data, u_int32_t len)
    223 {
    224 	usb_device_request_t	req;
    225 
    226 	DPRINTFN(10,("%s: %s: enter, len=%d\n", USBDEVNAME(sc->kue_dev),
    227 		     __func__, len));
    228 
    229 	if (rw == KUE_CTL_WRITE)
    230 		req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
    231 	else
    232 		req.bmRequestType = UT_READ_VENDOR_DEVICE;
    233 
    234 	req.bRequest = breq;
    235 	USETW(req.wValue, val);
    236 	USETW(req.wIndex, 0);
    237 	USETW(req.wLength, len);
    238 
    239 	return (usbd_do_request(sc->kue_udev, &req, data));
    240 }
    241 
    242 Static int
    243 kue_load_fw(struct kue_softc *sc)
    244 {
    245 	usb_device_descriptor_t dd;
    246 	usbd_status		err;
    247 
    248 	DPRINTFN(1,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev), __func__));
    249 
    250 	/*
    251 	 * First, check if we even need to load the firmware.
    252 	 * If the device was still attached when the system was
    253 	 * rebooted, it may already have firmware loaded in it.
    254 	 * If this is the case, we don't need to do it again.
    255 	 * And in fact, if we try to load it again, we'll hang,
    256 	 * so we have to avoid this condition if we don't want
    257 	 * to look stupid.
    258 	 *
    259          * We can test this quickly by checking the bcdRevision
    260          * code. The NIC will return a different revision code if
    261          * it's probed while the firmware is still loaded and
    262          * running.
    263          */
    264 	if (usbd_get_device_desc(sc->kue_udev, &dd))
    265 		return (EIO);
    266         if (UGETW(dd.bcdDevice) == KUE_WARM_REV) {
    267 		printf("%s: warm boot, no firmware download\n",
    268 		       USBDEVNAME(sc->kue_dev));
    269 		return (0);
    270 	}
    271 
    272 	printf("%s: cold boot, downloading firmware\n",
    273 	       USBDEVNAME(sc->kue_dev));
    274 
    275 	/* Load code segment */
    276 	DPRINTFN(1,("%s: kue_load_fw: download code_seg\n",
    277 		    USBDEVNAME(sc->kue_dev)));
    278 	/*XXXUNCONST*/
    279 	err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN,
    280 	    0, __UNCONST(kue_code_seg), sizeof(kue_code_seg));
    281 	if (err) {
    282 		printf("%s: failed to load code segment: %s\n",
    283 		    USBDEVNAME(sc->kue_dev), usbd_errstr(err));
    284 			return (EIO);
    285 	}
    286 
    287 	/* Load fixup segment */
    288 	DPRINTFN(1,("%s: kue_load_fw: download fix_seg\n",
    289 		    USBDEVNAME(sc->kue_dev)));
    290 	/*XXXUNCONST*/
    291 	err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN,
    292 	    0, __UNCONST(kue_fix_seg), sizeof(kue_fix_seg));
    293 	if (err) {
    294 		printf("%s: failed to load fixup segment: %s\n",
    295 		    USBDEVNAME(sc->kue_dev), usbd_errstr(err));
    296 			return (EIO);
    297 	}
    298 
    299 	/* Send trigger command. */
    300 	DPRINTFN(1,("%s: kue_load_fw: download trig_seg\n",
    301 		    USBDEVNAME(sc->kue_dev)));
    302 	/*XXXUNCONST*/
    303 	err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN,
    304 	    0, __UNCONST(kue_trig_seg), sizeof(kue_trig_seg));
    305 	if (err) {
    306 		printf("%s: failed to load trigger segment: %s\n",
    307 		    USBDEVNAME(sc->kue_dev), usbd_errstr(err));
    308 			return (EIO);
    309 	}
    310 
    311 	usbd_delay_ms(sc->kue_udev, 10);
    312 
    313 	/*
    314 	 * Reload device descriptor.
    315 	 * Why? The chip without the firmware loaded returns
    316 	 * one revision code. The chip with the firmware
    317 	 * loaded and running returns a *different* revision
    318 	 * code. This confuses the quirk mechanism, which is
    319 	 * dependent on the revision data.
    320 	 */
    321 	(void)usbd_reload_device_desc(sc->kue_udev);
    322 
    323 	DPRINTFN(1,("%s: %s: done\n", USBDEVNAME(sc->kue_dev), __func__));
    324 
    325 	/* Reset the adapter. */
    326 	kue_reset(sc);
    327 
    328 	return (0);
    329 }
    330 
    331 Static void
    332 kue_setmulti(struct kue_softc *sc)
    333 {
    334 	struct ifnet		*ifp = GET_IFP(sc);
    335 	struct ether_multi	*enm;
    336 	struct ether_multistep	step;
    337 	int			i;
    338 
    339 	DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev), __func__));
    340 
    341 	if (ifp->if_flags & IFF_PROMISC) {
    342 allmulti:
    343 		ifp->if_flags |= IFF_ALLMULTI;
    344 		sc->kue_rxfilt |= KUE_RXFILT_ALLMULTI;
    345 		sc->kue_rxfilt &= ~KUE_RXFILT_MULTICAST;
    346 		kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->kue_rxfilt);
    347 		return;
    348 	}
    349 
    350 	sc->kue_rxfilt &= ~KUE_RXFILT_ALLMULTI;
    351 
    352 	i = 0;
    353 #if defined (__NetBSD__)
    354 	ETHER_FIRST_MULTI(step, &sc->kue_ec, enm);
    355 #else
    356 	ETHER_FIRST_MULTI(step, &sc->arpcom, enm);
    357 #endif
    358 	while (enm != NULL) {
    359 		if (i == KUE_MCFILTCNT(sc) ||
    360 		    memcmp(enm->enm_addrlo, enm->enm_addrhi,
    361 			ETHER_ADDR_LEN) != 0)
    362 			goto allmulti;
    363 
    364 		memcpy(KUE_MCFILT(sc, i), enm->enm_addrlo, ETHER_ADDR_LEN);
    365 		ETHER_NEXT_MULTI(step, enm);
    366 		i++;
    367 	}
    368 
    369 	ifp->if_flags &= ~IFF_ALLMULTI;
    370 
    371 	sc->kue_rxfilt |= KUE_RXFILT_MULTICAST;
    372 	kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS,
    373 	    i, sc->kue_mcfilters, i * ETHER_ADDR_LEN);
    374 
    375 	kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->kue_rxfilt);
    376 }
    377 
    378 /*
    379  * Issue a SET_CONFIGURATION command to reset the MAC. This should be
    380  * done after the firmware is loaded into the adapter in order to
    381  * bring it into proper operation.
    382  */
    383 Static void
    384 kue_reset(struct kue_softc *sc)
    385 {
    386 	DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev), __func__));
    387 
    388 	if (usbd_set_config_no(sc->kue_udev, KUE_CONFIG_NO, 1) ||
    389 	    usbd_device2interface_handle(sc->kue_udev, KUE_IFACE_IDX,
    390 					 &sc->kue_iface))
    391 		printf("%s: reset failed\n", USBDEVNAME(sc->kue_dev));
    392 
    393 	/* Wait a little while for the chip to get its brains in order. */
    394 	usbd_delay_ms(sc->kue_udev, 10);
    395 }
    396 
    397 /*
    398  * Probe for a KLSI chip.
    399  */
    400 USB_MATCH(kue)
    401 {
    402 	USB_MATCH_START(kue, uaa);
    403 
    404 	DPRINTFN(25,("kue_match: enter\n"));
    405 
    406 #ifndef USB_USE_IFATTACH
    407 	if (uaa->iface != NULL)
    408 		return (UMATCH_NONE);
    409 #endif /* USB_USE_IFATTACH */
    410 
    411 	return (kue_lookup(uaa->vendor, uaa->product) != NULL ?
    412 		UMATCH_VENDOR_PRODUCT : UMATCH_NONE);
    413 }
    414 
    415 /*
    416  * Attach the interface. Allocate softc structures, do
    417  * setup and ethernet/BPF attach.
    418  */
    419 USB_ATTACH(kue)
    420 {
    421 	USB_ATTACH_START(kue, sc, uaa);
    422 	char			*devinfop;
    423 	int			s;
    424 	struct ifnet		*ifp;
    425 	usbd_device_handle	dev = uaa->device;
    426 	usbd_interface_handle	iface;
    427 	usbd_status		err;
    428 	usb_interface_descriptor_t	*id;
    429 	usb_endpoint_descriptor_t	*ed;
    430 	int			i;
    431 
    432 	DPRINTFN(5,(" : kue_attach: sc=%p, dev=%p", sc, dev));
    433 
    434 	devinfop = usbd_devinfo_alloc(dev, 0);
    435 	USB_ATTACH_SETUP;
    436 	printf("%s: %s\n", USBDEVNAME(sc->kue_dev), devinfop);
    437 	usbd_devinfo_free(devinfop);
    438 
    439 	err = usbd_set_config_no(dev, KUE_CONFIG_NO, 1);
    440 	if (err) {
    441 		printf("%s: setting config no failed\n",
    442 		    USBDEVNAME(sc->kue_dev));
    443 		USB_ATTACH_ERROR_RETURN;
    444 	}
    445 
    446 	sc->kue_udev = dev;
    447 	sc->kue_product = uaa->product;
    448 	sc->kue_vendor = uaa->vendor;
    449 
    450 	/* Load the firmware into the NIC. */
    451 	if (kue_load_fw(sc)) {
    452 		printf("%s: loading firmware failed\n",
    453 		    USBDEVNAME(sc->kue_dev));
    454 		USB_ATTACH_ERROR_RETURN;
    455 	}
    456 
    457 	err = usbd_device2interface_handle(dev, KUE_IFACE_IDX, &iface);
    458 	if (err) {
    459 		printf("%s: getting interface handle failed\n",
    460 		    USBDEVNAME(sc->kue_dev));
    461 		USB_ATTACH_ERROR_RETURN;
    462 	}
    463 
    464 	sc->kue_iface = iface;
    465 	id = usbd_get_interface_descriptor(iface);
    466 
    467 	/* Find endpoints. */
    468 	for (i = 0; i < id->bNumEndpoints; i++) {
    469 		ed = usbd_interface2endpoint_descriptor(iface, i);
    470 		if (ed == NULL) {
    471 			printf("%s: couldn't get ep %d\n",
    472 			    USBDEVNAME(sc->kue_dev), i);
    473 			USB_ATTACH_ERROR_RETURN;
    474 		}
    475 		if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
    476 		    UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
    477 			sc->kue_ed[KUE_ENDPT_RX] = ed->bEndpointAddress;
    478 		} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
    479 			   UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
    480 			sc->kue_ed[KUE_ENDPT_TX] = ed->bEndpointAddress;
    481 		} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
    482 			   UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
    483 			sc->kue_ed[KUE_ENDPT_INTR] = ed->bEndpointAddress;
    484 		}
    485 	}
    486 
    487 	if (sc->kue_ed[KUE_ENDPT_RX] == 0 || sc->kue_ed[KUE_ENDPT_TX] == 0) {
    488 		printf("%s: missing endpoint\n", USBDEVNAME(sc->kue_dev));
    489 		USB_ATTACH_ERROR_RETURN;
    490 	}
    491 
    492 	/* Read ethernet descriptor */
    493 	err = kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR,
    494 	    0, &sc->kue_desc, sizeof(sc->kue_desc));
    495 	if (err) {
    496 		printf("%s: could not read Ethernet descriptor\n",
    497 		    USBDEVNAME(sc->kue_dev));
    498 		USB_ATTACH_ERROR_RETURN;
    499 	}
    500 
    501 	sc->kue_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN,
    502 	    M_USBDEV, M_NOWAIT);
    503 	if (sc->kue_mcfilters == NULL) {
    504 		printf("%s: no memory for multicast filter buffer\n",
    505 		    USBDEVNAME(sc->kue_dev));
    506 		USB_ATTACH_ERROR_RETURN;
    507 	}
    508 
    509 	s = splnet();
    510 
    511 	/*
    512 	 * A KLSI chip was detected. Inform the world.
    513 	 */
    514 	printf("%s: Ethernet address %s\n", USBDEVNAME(sc->kue_dev),
    515 	    ether_sprintf(sc->kue_desc.kue_macaddr));
    516 
    517 	/* Initialize interface info.*/
    518 	ifp = GET_IFP(sc);
    519 	ifp->if_softc = sc;
    520 	ifp->if_mtu = ETHERMTU;
    521 	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
    522 	ifp->if_ioctl = kue_ioctl;
    523 	ifp->if_start = kue_start;
    524 	ifp->if_init = kue_init;
    525 	ifp->if_stop = kue_stop;
    526 	ifp->if_watchdog = kue_watchdog;
    527 #if defined(__OpenBSD__)
    528 	ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
    529 #endif
    530 	strncpy(ifp->if_xname, USBDEVNAME(sc->kue_dev), IFNAMSIZ);
    531 
    532 	IFQ_SET_READY(&ifp->if_snd);
    533 
    534 	/* Attach the interface. */
    535 	if_attach(ifp);
    536 	Ether_ifattach(ifp, sc->kue_desc.kue_macaddr);
    537 #if NRND > 0
    538 	rnd_attach_source(&sc->rnd_source, USBDEVNAME(sc->kue_dev),
    539 	    RND_TYPE_NET, 0);
    540 #endif
    541 
    542 	sc->kue_attached = 1;
    543 	splx(s);
    544 
    545 	usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->kue_udev,
    546 			   USBDEV(sc->kue_dev));
    547 
    548 	USB_ATTACH_SUCCESS_RETURN;
    549 }
    550 
    551 USB_DETACH(kue)
    552 {
    553 	USB_DETACH_START(kue, sc);
    554 	struct ifnet		*ifp = GET_IFP(sc);
    555 	int			s;
    556 
    557 	s = splusb();		/* XXX why? */
    558 
    559 	if (sc->kue_mcfilters != NULL) {
    560 		free(sc->kue_mcfilters, M_USBDEV);
    561 		sc->kue_mcfilters = NULL;
    562 	}
    563 
    564 	if (!sc->kue_attached) {
    565 		/* Detached before attached finished, so just bail out. */
    566 		splx(s);
    567 		return (0);
    568 	}
    569 
    570 	if (ifp->if_flags & IFF_RUNNING)
    571 		kue_stop(ifp, 1);
    572 
    573 #if defined(__NetBSD__)
    574 #if NRND > 0
    575 	rnd_detach_source(&sc->rnd_source);
    576 #endif
    577 	ether_ifdetach(ifp);
    578 #endif /* __NetBSD__ */
    579 
    580 	if_detach(ifp);
    581 
    582 #ifdef DIAGNOSTIC
    583 	if (sc->kue_ep[KUE_ENDPT_TX] != NULL ||
    584 	    sc->kue_ep[KUE_ENDPT_RX] != NULL ||
    585 	    sc->kue_ep[KUE_ENDPT_INTR] != NULL)
    586 		printf("%s: detach has active endpoints\n",
    587 		       USBDEVNAME(sc->kue_dev));
    588 #endif
    589 
    590 	sc->kue_attached = 0;
    591 	splx(s);
    592 
    593 	return (0);
    594 }
    595 
    596 int
    597 kue_activate(device_ptr_t self, enum devact act)
    598 {
    599 	struct kue_softc *sc = (struct kue_softc *)self;
    600 
    601 	DPRINTFN(2,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev), __func__));
    602 
    603 	switch (act) {
    604 	case DVACT_ACTIVATE:
    605 		return (EOPNOTSUPP);
    606 		break;
    607 
    608 	case DVACT_DEACTIVATE:
    609 #if defined(__NetBSD__)
    610 		/* Deactivate the interface. */
    611 		if_deactivate(&sc->kue_ec.ec_if);
    612 #endif
    613 		sc->kue_dying = 1;
    614 		break;
    615 	}
    616 	return (0);
    617 }
    618 
    619 /*
    620  * A frame has been uploaded: pass the resulting mbuf chain up to
    621  * the higher level protocols.
    622  */
    623 Static void
    624 kue_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
    625 {
    626 	struct ue_chain		*c = priv;
    627 	struct kue_softc	*sc = (void *)c->ue_dev;
    628 	struct ifnet		*ifp = GET_IFP(sc);
    629 	struct mbuf		*m;
    630 	int			total_len = 0;
    631 	int			s;
    632 
    633 	DPRINTFN(10,("%s: %s: enter status=%d\n", USBDEVNAME(sc->kue_dev),
    634 		     __func__, status));
    635 
    636 	if (sc->kue_dying)
    637 		return;
    638 
    639 	if (!(ifp->if_flags & IFF_RUNNING))
    640 		return;
    641 
    642 	usbd_unmap_buffer(xfer);
    643 
    644 	if (status != USBD_NORMAL_COMPLETION) {
    645 		if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
    646 			return;
    647 		sc->kue_rx_errs++;
    648 		if (usbd_ratecheck(&sc->kue_rx_notice)) {
    649 			printf("%s: %u usb errors on rx: %s\n",
    650 			    USBDEVNAME(sc->kue_dev), sc->kue_rx_errs,
    651 			    usbd_errstr(status));
    652 			sc->kue_rx_errs = 0;
    653 		}
    654 		if (status == USBD_STALLED)
    655 			usbd_clear_endpoint_stall_async(sc->kue_ep[KUE_ENDPT_RX]);
    656 		goto done;
    657 	}
    658 
    659 	usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
    660 
    661 	DPRINTFN(10,("%s: %s: total_len=%d len=%d\n", USBDEVNAME(sc->kue_dev),
    662 		     __func__, total_len,
    663 		     UGETW(mtod(c->ue_mbuf, u_int8_t *))));
    664 
    665 	if (total_len <= 1)
    666 		goto done;
    667 
    668 	m = c->ue_mbuf;
    669 
    670 	/* No errors; receive the packet. */
    671 	total_len = UGETW(mtod(m, u_int8_t *));
    672 
    673 	if (total_len < sizeof(struct ether_header)) {
    674 		ifp->if_ierrors++;
    675 		goto done;
    676 	}
    677 
    678 	m_adj(m, sizeof(u_int16_t));
    679 
    680 	/*
    681 	 * Allocate new mbuf cluster for the next transfer.
    682 	 * If that failed, discard current packet and recycle the mbuf.
    683 	 */
    684 	if ((c->ue_mbuf = usb_ether_newbuf(NULL)) == NULL) {
    685 		printf("%s: no memory for rx list -- packet dropped!\n",
    686 		    USBDEVNAME(sc->kue_dev));
    687 		ifp->if_ierrors++;
    688 		c->ue_mbuf = usb_ether_newbuf(m);
    689 		goto done;
    690 	}
    691 
    692 	ifp->if_ipackets++;
    693 	m->m_pkthdr.len = m->m_len = total_len;
    694 
    695 	m->m_pkthdr.rcvif = ifp;
    696 
    697 	s = splnet();
    698 
    699 #if NBPFILTER > 0
    700 	/*
    701 	 * Handle BPF listeners. Let the BPF user see the packet, but
    702 	 * don't pass it up to the ether_input() layer unless it's
    703 	 * a broadcast packet, multicast packet, matches our ethernet
    704 	 * address or the interface is in promiscuous mode.
    705 	 */
    706 	if (ifp->if_bpf)
    707 		bpf_mtap(ifp->if_bpf, m);
    708 #endif
    709 
    710 	DPRINTFN(10,("%s: %s: deliver %d\n", USBDEVNAME(sc->kue_dev),
    711 		    __func__, m->m_len));
    712 	IF_INPUT(ifp, m);
    713 	splx(s);
    714 
    715  done:
    716 
    717 	/* Setup new transfer. */
    718 	(void)usbd_map_buffer_mbuf(c->ue_xfer, c->ue_mbuf);
    719 	usbd_setup_xfer(c->ue_xfer, sc->kue_ep[KUE_ENDPT_RX],
    720 	    c, NULL /* XXX buf */, KUE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY
    721 #ifdef __FreeBSD__	/* callback needs context */
    722 	    | USBD_CALLBACK_AS_TASK
    723 #endif
    724 	    ,
    725 	    USBD_NO_TIMEOUT, kue_rxeof);
    726 	usbd_transfer(c->ue_xfer);
    727 
    728 	DPRINTFN(10,("%s: %s: start rx\n", USBDEVNAME(sc->kue_dev),
    729 		    __func__));
    730 }
    731 
    732 /*
    733  * A frame was downloaded to the chip. It's safe for us to clean up
    734  * the list buffers.
    735  */
    736 
    737 Static void
    738 kue_txeof(usbd_xfer_handle xfer, usbd_private_handle priv,
    739     usbd_status status)
    740 {
    741 	struct ue_chain		*c = priv;
    742 	struct kue_softc	*sc = (void *)c->ue_dev;
    743 	struct ifnet		*ifp = GET_IFP(sc);
    744 	int			s;
    745 
    746 	if (sc->kue_dying)
    747 		return;
    748 
    749 	s = splnet();
    750 
    751 	DPRINTFN(10,("%s: %s: enter status=%d\n", USBDEVNAME(sc->kue_dev),
    752 		    __func__, status));
    753 
    754 	ifp->if_timer = 0;
    755 	ifp->if_flags &= ~IFF_OACTIVE;
    756 
    757 	usbd_unmap_buffer(xfer);
    758 
    759 	if (status != USBD_NORMAL_COMPLETION) {
    760 		if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
    761 			splx(s);
    762 			return;
    763 		}
    764 		ifp->if_oerrors++;
    765 		printf("%s: usb error on tx: %s\n", USBDEVNAME(sc->kue_dev),
    766 		    usbd_errstr(status));
    767 		if (status == USBD_STALLED)
    768 			usbd_clear_endpoint_stall_async(sc->kue_ep[KUE_ENDPT_TX]);
    769 		splx(s);
    770 		return;
    771 	}
    772 
    773 	ifp->if_opackets++;
    774 
    775 	m_freem(c->ue_mbuf);
    776 	c->ue_mbuf = NULL;
    777 
    778 	if (IFQ_IS_EMPTY(&ifp->if_snd) == 0)
    779 		kue_start(ifp);
    780 
    781 	splx(s);
    782 }
    783 
    784 Static int
    785 kue_send(struct kue_softc *sc, struct mbuf *m, int idx)
    786 {
    787 	int			total_len;
    788 	struct ue_chain		*c;
    789 	usbd_status		err;
    790 	int			ret;
    791 
    792 	DPRINTFN(10,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__));
    793 
    794 	c = &sc->kue_cdata.kue_tx_chain[idx];
    795 
    796 	/* Prepend two bytes at the beginning to hold the frame length. */
    797 	M_PREPEND(m, 2, M_DONTWAIT);
    798 	if (m != NULL)
    799 		m = m_pullup(m, 2);	/* just in case */
    800 	if (m == NULL) {
    801 		GET_IFP(sc)->if_oerrors++;
    802 		return (ENOBUFS);
    803 	}
    804 
    805 	/*
    806 	 * Copy the mbuf data into a contiguous buffer, leaving two
    807 	 * bytes at the beginning to hold the frame length.
    808 	 */
    809 	c->ue_mbuf = m;
    810 
    811 	/* Frame length is specified in the first 2 bytes of the buffer. */
    812 	USETW(mtod(m, char *), m->m_pkthdr.len - 2);
    813 
    814 	total_len = m->m_pkthdr.len;
    815 	/* XXX what's this? */
    816 	total_len += 64 - (total_len % 64);
    817 	m_copyback(m, total_len - 1, 1, "");	/* expand mbuf chain */
    818 	if (m->m_pkthdr.len != total_len) {
    819 		m_freem(m);
    820 		return (ENOBUFS);
    821 	}
    822 
    823 	ret = usb_ether_map_tx_buffer_mbuf(c, m);
    824 	if (ret) {
    825 		m_freem(m);
    826 		return (ret);
    827 	}
    828 
    829 	usbd_setup_xfer(c->ue_xfer, sc->kue_ep[KUE_ENDPT_TX],
    830 	    c, NULL /* XXX buf */, total_len, USBD_NO_COPY
    831 #ifdef __FreeBSD__	/* callback needs context */
    832 	    | USBD_CALLBACK_AS_TASK
    833 #endif
    834 	    , USBD_DEFAULT_TIMEOUT,
    835 	    kue_txeof);
    836 
    837 	/* Transmit */
    838 	err = usbd_transfer(c->ue_xfer);
    839 	if (err != USBD_IN_PROGRESS) {
    840 		c->ue_mbuf = NULL;
    841 		m_freem(m);
    842 		printf("%s: kue_send error=%s\n", USBDEVNAME(sc->kue_dev),
    843 		       usbd_errstr(err));
    844 		kue_stop(GET_IFP(sc), 0);
    845 		return (EIO);
    846 	}
    847 
    848 	sc->kue_cdata.kue_tx_cnt++;
    849 
    850 	return (0);
    851 }
    852 
    853 Static void
    854 kue_start(struct ifnet *ifp)
    855 {
    856 	struct kue_softc	*sc = ifp->if_softc;
    857 	struct mbuf		*m_head = NULL;
    858 
    859 	DPRINTFN(10,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__));
    860 
    861 	if (sc->kue_dying)
    862 		return;
    863 
    864 	if (ifp->if_flags & IFF_OACTIVE)
    865 		return;
    866 
    867 	IFQ_POLL(&ifp->if_snd, m_head);
    868 	if (m_head == NULL)
    869 		return;
    870 
    871 	IFQ_DEQUEUE(&ifp->if_snd, m_head);
    872 
    873 #if NBPFILTER > 0
    874 	/*
    875 	 * If there's a BPF listener, bounce a copy of this frame
    876 	 * to him.
    877 	 */
    878 	if (ifp->if_bpf)
    879 		bpf_mtap(ifp->if_bpf, m_head);
    880 #endif
    881 
    882 	if (kue_send(sc, m_head, 0)) {
    883 		ifp->if_flags |= IFF_OACTIVE;
    884 		return;
    885 	}
    886 
    887 	ifp->if_flags |= IFF_OACTIVE;
    888 
    889 	/*
    890 	 * Set a timeout in case the chip goes out to lunch.
    891 	 */
    892 	ifp->if_timer = 6;
    893 }
    894 
    895 Static int
    896 kue_init(struct ifnet *ifp)
    897 {
    898 	struct kue_softc	*sc = ifp->if_softc;
    899 	int			s;
    900 	u_char			*eaddr;
    901 	struct ue_chain		*c;
    902 	int			i;
    903 
    904 	DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__));
    905 
    906 	if (ifp->if_flags & IFF_RUNNING)
    907 		return (EIO);
    908 
    909 	s = splnet();
    910 
    911 #if defined(__NetBSD__)
    912 	eaddr = LLADDR(ifp->if_sadl);
    913 #else
    914 	eaddr = sc->arpcom.ac_enaddr;
    915 #endif /* defined(__NetBSD__) */
    916 	/* Set MAC address */
    917 	kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC, 0, eaddr, ETHER_ADDR_LEN);
    918 
    919 	sc->kue_rxfilt = KUE_RXFILT_UNICAST | KUE_RXFILT_BROADCAST;
    920 
    921 	 /* If we want promiscuous mode, set the allframes bit. */
    922 	if (ifp->if_flags & IFF_PROMISC)
    923 		sc->kue_rxfilt |= KUE_RXFILT_PROMISC;
    924 
    925 	kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->kue_rxfilt);
    926 
    927 	/* I'm not sure how to tune these. */
    928 #if 0
    929 	/*
    930 	 * Leave this one alone for now; setting it
    931 	 * wrong causes lockups on some machines/controllers.
    932 	 */
    933 	kue_setword(sc, KUE_CMD_SET_SOFS, 1);
    934 #endif
    935 	kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64);
    936 
    937 	if (sc->kue_ep[KUE_ENDPT_RX] == NULL) {
    938 		if (kue_open_pipes(sc)) {
    939 			splx(s);
    940 			return (EIO);
    941 		}
    942 	}
    943 
    944 	/* Init TX ring. */
    945 	if ((i = usb_ether_tx_list_init(USBDEV(sc->kue_dev),
    946 	    sc->kue_cdata.kue_tx_chain, KUE_TX_LIST_CNT,
    947 	    sc->kue_udev, sc->kue_ep[KUE_ENDPT_TX], NULL))) {
    948 		printf("%s: tx list init failed\n", USBDEVNAME(sc->kue_dev));
    949 		splx(s);
    950 		return (i);
    951 	}
    952 
    953 	/* Init RX ring. */
    954 	if ((i = usb_ether_rx_list_init(USBDEV(sc->kue_dev),
    955 	    sc->kue_cdata.kue_rx_chain, KUE_RX_LIST_CNT,
    956 	    sc->kue_udev, sc->kue_ep[KUE_ENDPT_RX]))) {
    957 		printf("%s: rx list init failed\n", USBDEVNAME(sc->kue_dev));
    958 		splx(s);
    959 		return (i);
    960 	}
    961 
    962 	/* Load the multicast filter. */
    963 	kue_setmulti(sc);
    964 
    965 	/* Start up the receive pipe. */
    966 	for (i = 0; i < KUE_RX_LIST_CNT; i++) {
    967 		c = &sc->kue_cdata.kue_rx_chain[i];
    968 		(void)usbd_map_buffer_mbuf(c->ue_xfer, c->ue_mbuf);
    969 		usbd_setup_xfer(c->ue_xfer, sc->kue_ep[KUE_ENDPT_RX],
    970 		    c, NULL /* XXX buf */, KUE_BUFSZ,
    971 		    USBD_SHORT_XFER_OK | USBD_NO_COPY
    972 #ifdef __FreeBSD__	/* callback needs context */
    973 		    | USBD_CALLBACK_AS_TASK
    974 #endif
    975 		    , USBD_NO_TIMEOUT,
    976 		    kue_rxeof);
    977 		DPRINTFN(5,("%s: %s: start read\n", USBDEVNAME(sc->kue_dev),
    978 			    __func__));
    979 		usbd_transfer(c->ue_xfer);
    980 	}
    981 
    982 	ifp->if_flags |= IFF_RUNNING;
    983 	ifp->if_flags &= ~IFF_OACTIVE;
    984 
    985 	splx(s);
    986 	return (0);
    987 }
    988 
    989 Static int
    990 kue_open_pipes(struct kue_softc *sc)
    991 {
    992 	usbd_status		err;
    993 
    994 	DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__));
    995 
    996 	/* Open RX and TX pipes. */
    997 	err = usbd_open_pipe(sc->kue_iface, sc->kue_ed[KUE_ENDPT_RX],
    998 	    USBD_EXCLUSIVE_USE, &sc->kue_ep[KUE_ENDPT_RX]);
    999 	if (err) {
   1000 		printf("%s: open rx pipe failed: %s\n",
   1001 		    USBDEVNAME(sc->kue_dev), usbd_errstr(err));
   1002 		return (EIO);
   1003 	}
   1004 
   1005 	err = usbd_open_pipe(sc->kue_iface, sc->kue_ed[KUE_ENDPT_TX],
   1006 	    USBD_EXCLUSIVE_USE, &sc->kue_ep[KUE_ENDPT_TX]);
   1007 	if (err) {
   1008 		printf("%s: open tx pipe failed: %s\n",
   1009 		    USBDEVNAME(sc->kue_dev), usbd_errstr(err));
   1010 		return (EIO);
   1011 	}
   1012 
   1013 	return (0);
   1014 }
   1015 
   1016 Static int
   1017 kue_ioctl(struct ifnet *ifp, u_long command, usb_ioctlarg_t data)
   1018 {
   1019 	struct kue_softc	*sc = ifp->if_softc;
   1020 #if 0
   1021 	struct ifaddr 		*ifa = (struct ifaddr *)data;
   1022 	struct ifreq		*ifr = (struct ifreq *)data;
   1023 #endif
   1024 	int			s, error = 0;
   1025 
   1026 	DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__));
   1027 
   1028 	if (sc->kue_dying)
   1029 		return (EIO);
   1030 
   1031 #ifdef DIAGNOSTIC
   1032 	if (!curproc) {
   1033 		printf("%s: no proc!!\n", USBDEVNAME(sc->kue_dev));
   1034 		return EIO;
   1035 	}
   1036 #endif
   1037 
   1038 	s = splnet();
   1039 
   1040 	switch(command) {
   1041 #if 0
   1042 	case SIOCSIFADDR:
   1043 		ifp->if_flags |= IFF_UP;
   1044 		kue_init(ifp);
   1045 
   1046 		switch (ifa->ifa_addr->sa_family) {
   1047 #ifdef INET
   1048 		case AF_INET:
   1049 #if defined(__NetBSD__)
   1050 			arp_ifinit(ifp, ifa);
   1051 #else
   1052 			arp_ifinit(&sc->arpcom, ifa);
   1053 #endif
   1054 			break;
   1055 #endif /* INET */
   1056 		}
   1057 		break;
   1058 
   1059 	case SIOCSIFMTU:
   1060 		if (ifr->ifr_mtu > ETHERMTU)
   1061 			error = EINVAL;
   1062 		else
   1063 			ifp->if_mtu = ifr->ifr_mtu;
   1064 		break;
   1065 #endif
   1066 
   1067 	case SIOCSIFFLAGS:
   1068 		if (ifp->if_flags & IFF_UP) {
   1069 			if (ifp->if_flags & IFF_RUNNING &&
   1070 			    ifp->if_flags & IFF_PROMISC &&
   1071 			    !(sc->kue_if_flags & IFF_PROMISC)) {
   1072 				sc->kue_rxfilt |= KUE_RXFILT_PROMISC;
   1073 				kue_setword(sc, KUE_CMD_SET_PKT_FILTER,
   1074 				    sc->kue_rxfilt);
   1075 			} else if (ifp->if_flags & IFF_RUNNING &&
   1076 			    !(ifp->if_flags & IFF_PROMISC) &&
   1077 			    sc->kue_if_flags & IFF_PROMISC) {
   1078 				sc->kue_rxfilt &= ~KUE_RXFILT_PROMISC;
   1079 				kue_setword(sc, KUE_CMD_SET_PKT_FILTER,
   1080 				    sc->kue_rxfilt);
   1081 			} else if (!(ifp->if_flags & IFF_RUNNING))
   1082 				kue_init(ifp);
   1083 		} else {
   1084 			if (ifp->if_flags & IFF_RUNNING)
   1085 				kue_stop(ifp, 1);
   1086 		}
   1087 		sc->kue_if_flags = ifp->if_flags;
   1088 		error = 0;
   1089 		break;
   1090 #if 0
   1091 	case SIOCADDMULTI:
   1092 	case SIOCDELMULTI:
   1093 		kue_setmulti(sc);
   1094 		error = 0;
   1095 		break;
   1096 #endif
   1097 	default:
   1098 		error = ether_ioctl(ifp, command, data);
   1099 		if (error == ENETRESET) {
   1100 			/*
   1101 			 * Multicast list has changed; set the hardware
   1102 			 * filter accordingly.
   1103 			 */
   1104 			if (ifp->if_flags & IFF_RUNNING)
   1105 				kue_setmulti(sc);
   1106 			error = 0;
   1107 		}
   1108 		break;
   1109 	}
   1110 
   1111 	splx(s);
   1112 
   1113 	return (error);
   1114 }
   1115 
   1116 Static void
   1117 kue_watchdog(struct ifnet *ifp)
   1118 {
   1119 	struct kue_softc	*sc = ifp->if_softc;
   1120 	struct ue_chain		*c;
   1121 	usbd_status		stat;
   1122 	int			s;
   1123 
   1124 	DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__));
   1125 
   1126 	if (sc->kue_dying)
   1127 		return;
   1128 
   1129 	ifp->if_oerrors++;
   1130 	printf("%s: watchdog timeout\n", USBDEVNAME(sc->kue_dev));
   1131 
   1132 	s = splusb();
   1133 	c = &sc->kue_cdata.kue_tx_chain[0];
   1134 	usbd_get_xfer_status(c->ue_xfer, NULL, NULL, NULL, &stat);
   1135 	kue_txeof(c->ue_xfer, c, stat);
   1136 
   1137 	if (IFQ_IS_EMPTY(&ifp->if_snd) == 0)
   1138 		kue_start(ifp);
   1139 	splx(s);
   1140 }
   1141 
   1142 /*
   1143  * Stop the adapter and free any mbufs allocated to the
   1144  * RX and TX lists.
   1145  */
   1146 Static void
   1147 kue_stop(struct ifnet *ifp, int disable)
   1148 {
   1149 	struct kue_softc	*sc = ifp->if_softc;
   1150 	usbd_status		err;
   1151 
   1152 	DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__));
   1153 
   1154 	ifp = GET_IFP(sc);
   1155 	ifp->if_timer = 0;
   1156 
   1157 	/* Stop transfers. */
   1158 	if (sc->kue_ep[KUE_ENDPT_RX] != NULL) {
   1159 		err = usbd_abort_pipe(sc->kue_ep[KUE_ENDPT_RX]);
   1160 		if (err) {
   1161 			printf("%s: abort rx pipe failed: %s\n",
   1162 			    USBDEVNAME(sc->kue_dev), usbd_errstr(err));
   1163 		}
   1164 	}
   1165 
   1166 	if (sc->kue_ep[KUE_ENDPT_TX] != NULL) {
   1167 		err = usbd_abort_pipe(sc->kue_ep[KUE_ENDPT_TX]);
   1168 		if (err) {
   1169 			printf("%s: abort tx pipe failed: %s\n",
   1170 			    USBDEVNAME(sc->kue_dev), usbd_errstr(err));
   1171 		}
   1172 	}
   1173 
   1174 	if (sc->kue_ep[KUE_ENDPT_INTR] != NULL) {
   1175 		err = usbd_abort_pipe(sc->kue_ep[KUE_ENDPT_INTR]);
   1176 		if (err) {
   1177 			printf("%s: abort intr pipe failed: %s\n",
   1178 			    USBDEVNAME(sc->kue_dev), usbd_errstr(err));
   1179 		}
   1180 	}
   1181 
   1182 	/* Free RX/TX resources. */
   1183 	usb_ether_rx_list_free(sc->kue_cdata.kue_rx_chain, KUE_RX_LIST_CNT);
   1184 	usb_ether_tx_list_free(sc->kue_cdata.kue_tx_chain, KUE_TX_LIST_CNT);
   1185 
   1186 	/* Close pipes. */
   1187 	if (sc->kue_ep[KUE_ENDPT_RX] != NULL) {
   1188 		err = usbd_close_pipe(sc->kue_ep[KUE_ENDPT_RX]);
   1189 		if (err) {
   1190 			printf("%s: close rx pipe failed: %s\n",
   1191 			    USBDEVNAME(sc->kue_dev), usbd_errstr(err));
   1192 		}
   1193 		sc->kue_ep[KUE_ENDPT_RX] = NULL;
   1194 	}
   1195 
   1196 	if (sc->kue_ep[KUE_ENDPT_TX] != NULL) {
   1197 		err = usbd_close_pipe(sc->kue_ep[KUE_ENDPT_TX]);
   1198 		if (err) {
   1199 			printf("%s: close tx pipe failed: %s\n",
   1200 			    USBDEVNAME(sc->kue_dev), usbd_errstr(err));
   1201 		}
   1202 		sc->kue_ep[KUE_ENDPT_TX] = NULL;
   1203 	}
   1204 
   1205 	if (sc->kue_ep[KUE_ENDPT_INTR] != NULL) {
   1206 		err = usbd_close_pipe(sc->kue_ep[KUE_ENDPT_INTR]);
   1207 		if (err) {
   1208 			printf("%s: close intr pipe failed: %s\n",
   1209 			    USBDEVNAME(sc->kue_dev), usbd_errstr(err));
   1210 		}
   1211 		sc->kue_ep[KUE_ENDPT_INTR] = NULL;
   1212 	}
   1213 
   1214 	ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
   1215 }
   1216