2 * Copyright (c) 1997, 1998, 1999, 2000
3 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
37 * Kawasaki LSI KL5KUSB101B USB to ethernet adapter driver.
39 * Written by Bill Paul <wpaul@ee.columbia.edu>
40 * Electrical Engineering Department
41 * Columbia University, New York City
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.
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.
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.
68 #include <sys/stdint.h>
69 #include <sys/stddef.h>
70 #include <sys/param.h>
71 #include <sys/queue.h>
72 #include <sys/types.h>
73 #include <sys/systm.h>
74 #include <sys/kernel.h>
76 #include <sys/linker_set.h>
77 #include <sys/module.h>
79 #include <sys/mutex.h>
80 #include <sys/condvar.h>
81 #include <sys/sysctl.h>
83 #include <sys/unistd.h>
84 #include <sys/callout.h>
85 #include <sys/malloc.h>
88 #include <dev/usb/usb.h>
89 #include <dev/usb/usbdi.h>
90 #include <dev/usb/usbdi_util.h>
93 #define USB_DEBUG_VAR kue_debug
94 #include <dev/usb/usb_debug.h>
95 #include <dev/usb/usb_process.h>
97 #include <dev/usb/net/usb_ethernet.h>
98 #include <dev/usb/net/if_kuereg.h>
99 #include <dev/usb/net/if_kuefw.h>
102 * Various supported device vendors/products.
104 static const struct usb_device_id kue_devs[] = {
105 {USB_VPI(USB_VENDOR_3COM, USB_PRODUCT_3COM_3C19250, 0)},
106 {USB_VPI(USB_VENDOR_3COM, USB_PRODUCT_3COM_3C460, 0)},
107 {USB_VPI(USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_URE450, 0)},
108 {USB_VPI(USB_VENDOR_ADS, USB_PRODUCT_ADS_UBS10BT, 0)},
109 {USB_VPI(USB_VENDOR_ADS, USB_PRODUCT_ADS_UBS10BTX, 0)},
110 {USB_VPI(USB_VENDOR_AOX, USB_PRODUCT_AOX_USB101, 0)},
111 {USB_VPI(USB_VENDOR_ASANTE, USB_PRODUCT_ASANTE_EA, 0)},
112 {USB_VPI(USB_VENDOR_ATEN, USB_PRODUCT_ATEN_DSB650C, 0)},
113 {USB_VPI(USB_VENDOR_ATEN, USB_PRODUCT_ATEN_UC10T, 0)},
114 {USB_VPI(USB_VENDOR_COREGA, USB_PRODUCT_COREGA_ETHER_USB_T, 0)},
115 {USB_VPI(USB_VENDOR_DLINK, USB_PRODUCT_DLINK_DSB650C, 0)},
116 {USB_VPI(USB_VENDOR_ENTREGA, USB_PRODUCT_ENTREGA_E45, 0)},
117 {USB_VPI(USB_VENDOR_ENTREGA, USB_PRODUCT_ENTREGA_XX1, 0)},
118 {USB_VPI(USB_VENDOR_ENTREGA, USB_PRODUCT_ENTREGA_XX2, 0)},
119 {USB_VPI(USB_VENDOR_IODATA, USB_PRODUCT_IODATA_USBETT, 0)},
120 {USB_VPI(USB_VENDOR_JATON, USB_PRODUCT_JATON_EDA, 0)},
121 {USB_VPI(USB_VENDOR_KINGSTON, USB_PRODUCT_KINGSTON_XX1, 0)},
122 {USB_VPI(USB_VENDOR_KLSI, USB_PRODUCT_AOX_USB101, 0)},
123 {USB_VPI(USB_VENDOR_KLSI, USB_PRODUCT_KLSI_DUH3E10BT, 0)},
124 {USB_VPI(USB_VENDOR_KLSI, USB_PRODUCT_KLSI_DUH3E10BTN, 0)},
125 {USB_VPI(USB_VENDOR_LINKSYS, USB_PRODUCT_LINKSYS_USB10T, 0)},
126 {USB_VPI(USB_VENDOR_MOBILITY, USB_PRODUCT_MOBILITY_EA, 0)},
127 {USB_VPI(USB_VENDOR_NETGEAR, USB_PRODUCT_NETGEAR_EA101, 0)},
128 {USB_VPI(USB_VENDOR_NETGEAR, USB_PRODUCT_NETGEAR_EA101X, 0)},
129 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_ENET, 0)},
130 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_ENET2, 0)},
131 {USB_VPI(USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_ENET3, 0)},
132 {USB_VPI(USB_VENDOR_PORTGEAR, USB_PRODUCT_PORTGEAR_EA8, 0)},
133 {USB_VPI(USB_VENDOR_PORTGEAR, USB_PRODUCT_PORTGEAR_EA9, 0)},
134 {USB_VPI(USB_VENDOR_PORTSMITH, USB_PRODUCT_PORTSMITH_EEA, 0)},
135 {USB_VPI(USB_VENDOR_SHARK, USB_PRODUCT_SHARK_PA, 0)},
136 {USB_VPI(USB_VENDOR_SILICOM, USB_PRODUCT_SILICOM_GPE, 0)},
137 {USB_VPI(USB_VENDOR_SILICOM, USB_PRODUCT_SILICOM_U2E, 0)},
138 {USB_VPI(USB_VENDOR_SMC, USB_PRODUCT_SMC_2102USB, 0)},
143 static device_probe_t kue_probe;
144 static device_attach_t kue_attach;
145 static device_detach_t kue_detach;
147 static usb_callback_t kue_bulk_read_callback;
148 static usb_callback_t kue_bulk_write_callback;
150 static uether_fn_t kue_attach_post;
151 static uether_fn_t kue_init;
152 static uether_fn_t kue_stop;
153 static uether_fn_t kue_start;
154 static uether_fn_t kue_setmulti;
155 static uether_fn_t kue_setpromisc;
157 static int kue_do_request(struct kue_softc *,
158 struct usb_device_request *, void *);
159 static int kue_setword(struct kue_softc *, uint8_t, uint16_t);
160 static int kue_ctl(struct kue_softc *, uint8_t, uint8_t, uint16_t,
162 static int kue_load_fw(struct kue_softc *);
163 static void kue_reset(struct kue_softc *);
166 static int kue_debug = 0;
168 SYSCTL_NODE(_hw_usb, OID_AUTO, kue, CTLFLAG_RW, 0, "USB kue");
169 SYSCTL_INT(_hw_usb_kue, OID_AUTO, debug, CTLFLAG_RW, &kue_debug, 0,
173 static const struct usb_config kue_config[KUE_N_TRANSFER] = {
177 .endpoint = UE_ADDR_ANY,
178 .direction = UE_DIR_OUT,
179 .bufsize = (MCLBYTES + 2 + 64),
180 .flags = {.pipe_bof = 1,},
181 .callback = kue_bulk_write_callback,
182 .timeout = 10000, /* 10 seconds */
187 .endpoint = UE_ADDR_ANY,
188 .direction = UE_DIR_IN,
189 .bufsize = (MCLBYTES + 2),
190 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
191 .callback = kue_bulk_read_callback,
192 .timeout = 0, /* no timeout */
196 static device_method_t kue_methods[] = {
197 /* Device interface */
198 DEVMETHOD(device_probe, kue_probe),
199 DEVMETHOD(device_attach, kue_attach),
200 DEVMETHOD(device_detach, kue_detach),
205 static driver_t kue_driver = {
207 .methods = kue_methods,
208 .size = sizeof(struct kue_softc),
211 static devclass_t kue_devclass;
213 DRIVER_MODULE(kue, uhub, kue_driver, kue_devclass, NULL, 0);
214 MODULE_DEPEND(kue, uether, 1, 1, 1);
215 MODULE_DEPEND(kue, usb, 1, 1, 1);
216 MODULE_DEPEND(kue, ether, 1, 1, 1);
218 static const struct usb_ether_methods kue_ue_methods = {
219 .ue_attach_post = kue_attach_post,
220 .ue_start = kue_start,
223 .ue_setmulti = kue_setmulti,
224 .ue_setpromisc = kue_setpromisc,
228 * We have a custom do_request function which is almost like the
229 * regular do_request function, except it has a much longer timeout.
230 * Why? Because we need to make requests over the control endpoint
231 * to download the firmware to the device, which can take longer
232 * than the default timeout.
235 kue_do_request(struct kue_softc *sc, struct usb_device_request *req,
240 err = uether_do_request(&sc->sc_ue, req, data, 60000);
246 kue_setword(struct kue_softc *sc, uint8_t breq, uint16_t word)
248 struct usb_device_request req;
250 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
252 USETW(req.wValue, word);
253 USETW(req.wIndex, 0);
254 USETW(req.wLength, 0);
256 return (kue_do_request(sc, &req, NULL));
260 kue_ctl(struct kue_softc *sc, uint8_t rw, uint8_t breq,
261 uint16_t val, void *data, int len)
263 struct usb_device_request req;
265 if (rw == KUE_CTL_WRITE)
266 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
268 req.bmRequestType = UT_READ_VENDOR_DEVICE;
272 USETW(req.wValue, val);
273 USETW(req.wIndex, 0);
274 USETW(req.wLength, len);
276 return (kue_do_request(sc, &req, data));
280 kue_load_fw(struct kue_softc *sc)
282 struct usb_device_descriptor *dd;
286 dd = usbd_get_device_descriptor(sc->sc_ue.ue_udev);
287 hwrev = UGETW(dd->bcdDevice);
290 * First, check if we even need to load the firmware.
291 * If the device was still attached when the system was
292 * rebooted, it may already have firmware loaded in it.
293 * If this is the case, we don't need to do it again.
294 * And in fact, if we try to load it again, we'll hang,
295 * so we have to avoid this condition if we don't want
298 * We can test this quickly by checking the bcdRevision
299 * code. The NIC will return a different revision code if
300 * it's probed while the firmware is still loaded and
306 /* Load code segment */
307 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN,
308 0, kue_code_seg, sizeof(kue_code_seg));
310 device_printf(sc->sc_ue.ue_dev, "failed to load code segment: %s\n",
315 /* Load fixup segment */
316 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN,
317 0, kue_fix_seg, sizeof(kue_fix_seg));
319 device_printf(sc->sc_ue.ue_dev, "failed to load fixup segment: %s\n",
324 /* Send trigger command. */
325 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN,
326 0, kue_trig_seg, sizeof(kue_trig_seg));
328 device_printf(sc->sc_ue.ue_dev, "failed to load trigger segment: %s\n",
337 kue_setpromisc(struct usb_ether *ue)
339 struct kue_softc *sc = uether_getsc(ue);
340 struct ifnet *ifp = uether_getifp(ue);
342 KUE_LOCK_ASSERT(sc, MA_OWNED);
344 if (ifp->if_flags & IFF_PROMISC)
345 sc->sc_rxfilt |= KUE_RXFILT_PROMISC;
347 sc->sc_rxfilt &= ~KUE_RXFILT_PROMISC;
349 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt);
353 kue_setmulti(struct usb_ether *ue)
355 struct kue_softc *sc = uether_getsc(ue);
356 struct ifnet *ifp = uether_getifp(ue);
357 struct ifmultiaddr *ifma;
360 KUE_LOCK_ASSERT(sc, MA_OWNED);
362 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
363 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI;
364 sc->sc_rxfilt &= ~KUE_RXFILT_MULTICAST;
365 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt);
369 sc->sc_rxfilt &= ~KUE_RXFILT_ALLMULTI;
372 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link)
374 if (ifma->ifma_addr->sa_family != AF_LINK)
377 * If there are too many addresses for the
378 * internal filter, switch over to allmulti mode.
380 if (i == KUE_MCFILTCNT(sc))
382 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
383 KUE_MCFILT(sc, i), ETHER_ADDR_LEN);
386 if_maddr_runlock(ifp);
388 if (i == KUE_MCFILTCNT(sc))
389 sc->sc_rxfilt |= KUE_RXFILT_ALLMULTI;
391 sc->sc_rxfilt |= KUE_RXFILT_MULTICAST;
392 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS,
393 i, sc->sc_mcfilters, i * ETHER_ADDR_LEN);
396 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->sc_rxfilt);
400 * Issue a SET_CONFIGURATION command to reset the MAC. This should be
401 * done after the firmware is loaded into the adapter in order to
402 * bring it into proper operation.
405 kue_reset(struct kue_softc *sc)
407 struct usb_config_descriptor *cd;
410 cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev);
412 err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx,
413 cd->bConfigurationValue);
415 DPRINTF("reset failed (ignored)\n");
417 /* wait a little while for the chip to get its brains in order */
418 uether_pause(&sc->sc_ue, hz / 100);
422 kue_attach_post(struct usb_ether *ue)
424 struct kue_softc *sc = uether_getsc(ue);
427 /* load the firmware into the NIC */
428 error = kue_load_fw(sc);
430 device_printf(sc->sc_ue.ue_dev, "could not load firmware\n");
431 /* ignore the error */
434 /* reset the adapter */
437 /* read ethernet descriptor */
438 kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR,
439 0, &sc->sc_desc, sizeof(sc->sc_desc));
441 /* copy in ethernet address */
442 memcpy(ue->ue_eaddr, sc->sc_desc.kue_macaddr, sizeof(ue->ue_eaddr));
446 * Probe for a KLSI chip.
449 kue_probe(device_t dev)
451 struct usb_attach_arg *uaa = device_get_ivars(dev);
453 if (uaa->usb_mode != USB_MODE_HOST)
455 if (uaa->info.bConfigIndex != KUE_CONFIG_IDX)
457 if (uaa->info.bIfaceIndex != KUE_IFACE_IDX)
460 return (usbd_lookup_id_by_uaa(kue_devs, sizeof(kue_devs), uaa));
464 * Attach the interface. Allocate softc structures, do
465 * setup and ethernet/BPF attach.
468 kue_attach(device_t dev)
470 struct usb_attach_arg *uaa = device_get_ivars(dev);
471 struct kue_softc *sc = device_get_softc(dev);
472 struct usb_ether *ue = &sc->sc_ue;
476 device_set_usb_desc(dev);
477 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
479 iface_index = KUE_IFACE_IDX;
480 error = usbd_transfer_setup(uaa->device, &iface_index,
481 sc->sc_xfer, kue_config, KUE_N_TRANSFER, sc, &sc->sc_mtx);
483 device_printf(dev, "allocating USB transfers failed!\n");
487 sc->sc_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN,
489 if (sc->sc_mcfilters == NULL) {
490 device_printf(dev, "failed allocating USB memory!\n");
496 ue->ue_udev = uaa->device;
497 ue->ue_mtx = &sc->sc_mtx;
498 ue->ue_methods = &kue_ue_methods;
500 error = uether_ifattach(ue);
502 device_printf(dev, "could not attach interface\n");
505 return (0); /* success */
509 return (ENXIO); /* failure */
513 kue_detach(device_t dev)
515 struct kue_softc *sc = device_get_softc(dev);
516 struct usb_ether *ue = &sc->sc_ue;
518 usbd_transfer_unsetup(sc->sc_xfer, KUE_N_TRANSFER);
520 mtx_destroy(&sc->sc_mtx);
521 free(sc->sc_mcfilters, M_USBDEV);
527 * A frame has been uploaded: pass the resulting mbuf chain up to
528 * the higher level protocols.
531 kue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
533 struct kue_softc *sc = usbd_xfer_softc(xfer);
534 struct usb_ether *ue = &sc->sc_ue;
535 struct ifnet *ifp = uether_getifp(ue);
536 struct usb_page_cache *pc;
541 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
543 switch (USB_GET_STATE(xfer)) {
544 case USB_ST_TRANSFERRED:
546 if (actlen <= (2 + sizeof(struct ether_header))) {
550 pc = usbd_xfer_get_frame(xfer, 0);
551 usbd_copy_out(pc, 0, buf, 2);
553 len = buf[0] | (buf[1] << 8);
554 len = min(actlen, len);
556 uether_rxbuf(ue, pc, 2, len);
560 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
561 usbd_transfer_submit(xfer);
566 DPRINTF("bulk read error, %s\n",
569 if (error != USB_ERR_CANCELLED) {
570 /* try to clear stall first */
571 usbd_xfer_set_stall(xfer);
580 kue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
582 struct kue_softc *sc = usbd_xfer_softc(xfer);
583 struct ifnet *ifp = uether_getifp(&sc->sc_ue);
584 struct usb_page_cache *pc;
590 switch (USB_GET_STATE(xfer)) {
591 case USB_ST_TRANSFERRED:
592 DPRINTFN(11, "transfer complete\n");
598 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
602 if (m->m_pkthdr.len > MCLBYTES)
603 m->m_pkthdr.len = MCLBYTES;
604 temp_len = (m->m_pkthdr.len + 2);
605 total_len = (temp_len + (64 - (temp_len % 64)));
607 /* the first two bytes are the frame length */
609 buf[0] = (uint8_t)(m->m_pkthdr.len);
610 buf[1] = (uint8_t)(m->m_pkthdr.len >> 8);
612 pc = usbd_xfer_get_frame(xfer, 0);
613 usbd_copy_in(pc, 0, buf, 2);
614 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len);
616 usbd_frame_zero(pc, temp_len, total_len - temp_len);
617 usbd_xfer_set_frame_len(xfer, 0, total_len);
620 * if there's a BPF listener, bounce a copy
621 * of this frame to him:
627 usbd_transfer_submit(xfer);
632 DPRINTFN(11, "transfer error, %s\n",
637 if (error != USB_ERR_CANCELLED) {
638 /* try to clear stall first */
639 usbd_xfer_set_stall(xfer);
648 kue_start(struct usb_ether *ue)
650 struct kue_softc *sc = uether_getsc(ue);
653 * start the USB transfers, if not already started:
655 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_RD]);
656 usbd_transfer_start(sc->sc_xfer[KUE_BULK_DT_WR]);
660 kue_init(struct usb_ether *ue)
662 struct kue_softc *sc = uether_getsc(ue);
663 struct ifnet *ifp = uether_getifp(ue);
665 KUE_LOCK_ASSERT(sc, MA_OWNED);
667 /* set MAC address */
668 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC,
669 0, IF_LLADDR(ifp), ETHER_ADDR_LEN);
671 /* I'm not sure how to tune these. */
674 * Leave this one alone for now; setting it
675 * wrong causes lockups on some machines/controllers.
677 kue_setword(sc, KUE_CMD_SET_SOFS, 1);
679 kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64);
681 /* load the multicast filter */
684 usbd_xfer_set_stall(sc->sc_xfer[KUE_BULK_DT_WR]);
686 ifp->if_drv_flags |= IFF_DRV_RUNNING;
691 kue_stop(struct usb_ether *ue)
693 struct kue_softc *sc = uether_getsc(ue);
694 struct ifnet *ifp = uether_getifp(ue);
696 KUE_LOCK_ASSERT(sc, MA_OWNED);
698 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
701 * stop all the transfers, if not already stopped:
703 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_WR]);
704 usbd_transfer_stop(sc->sc_xfer[KUE_BULK_DT_RD]);