Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/if_kue.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 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD: releng/7.3/sys/dev/usb/if_kue.c 171006 2007-06-23 06:47:43Z imp $"); 35 36 /* 37 * Kawasaki LSI KL5KUSB101B USB to ethernet adapter driver. 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 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 #include <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/sockio.h> 71 #include <sys/mbuf.h> 72 #include <sys/malloc.h> 73 #include <sys/kernel.h> 74 #include <sys/module.h> 75 #include <sys/socket.h> 76 77 #include <net/if.h> 78 #include <net/if_arp.h> 79 #include <net/ethernet.h> 80 #include <net/if_dl.h> 81 #include <net/if_media.h> 82 #include <net/if_types.h> 83 84 #include <net/bpf.h> 85 86 #include <sys/bus.h> 87 #include <machine/bus.h> 88 89 #include <dev/usb/usb.h> 90 #include <dev/usb/usbdi.h> 91 #include <dev/usb/usbdi_util.h> 92 #include <dev/usb/usbdivar.h> 93 #include "usbdevs.h" 94 #include <dev/usb/usb_ethersubr.h> 95 96 #include <dev/usb/if_kuereg.h> 97 #include <dev/usb/kue_fw.h> 98 99 MODULE_DEPEND(kue, usb, 1, 1, 1); 100 MODULE_DEPEND(kue, ether, 1, 1, 1); 101 102 /* 103 * Various supported device vendors/products. 104 */ 105 static struct kue_type kue_devs[] = { 106 { USB_VENDOR_3COM, USB_PRODUCT_3COM_3C19250 }, 107 { USB_VENDOR_3COM, USB_PRODUCT_3COM_3C460 }, 108 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_URE450 }, 109 { USB_VENDOR_ADS, USB_PRODUCT_ADS_UBS10BT }, 110 { USB_VENDOR_ADS, USB_PRODUCT_ADS_UBS10BTX }, 111 { USB_VENDOR_AOX, USB_PRODUCT_AOX_USB101 }, 112 { USB_VENDOR_ASANTE, USB_PRODUCT_ASANTE_EA }, 113 { USB_VENDOR_ATEN, USB_PRODUCT_ATEN_UC10T }, 114 { USB_VENDOR_ATEN, USB_PRODUCT_ATEN_DSB650C }, 115 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_ETHER_USB_T }, 116 { USB_VENDOR_DLINK, USB_PRODUCT_DLINK_DSB650C }, 117 { USB_VENDOR_ENTREGA, USB_PRODUCT_ENTREGA_E45 }, 118 { USB_VENDOR_ENTREGA, USB_PRODUCT_ENTREGA_XX1 }, 119 { USB_VENDOR_ENTREGA, USB_PRODUCT_ENTREGA_XX2 }, 120 { USB_VENDOR_IODATA, USB_PRODUCT_IODATA_USBETT }, 121 { USB_VENDOR_JATON, USB_PRODUCT_JATON_EDA }, 122 { USB_VENDOR_KINGSTON, USB_PRODUCT_KINGSTON_XX1 }, 123 { USB_VENDOR_KLSI, USB_PRODUCT_AOX_USB101 }, 124 { USB_VENDOR_KLSI, USB_PRODUCT_KLSI_DUH3E10BT }, 125 { USB_VENDOR_KLSI, USB_PRODUCT_KLSI_DUH3E10BTN }, 126 { USB_VENDOR_LINKSYS, USB_PRODUCT_LINKSYS_USB10T }, 127 { USB_VENDOR_MOBILITY, USB_PRODUCT_MOBILITY_EA }, 128 { USB_VENDOR_NETGEAR, USB_PRODUCT_NETGEAR_EA101 }, 129 { USB_VENDOR_NETGEAR, USB_PRODUCT_NETGEAR_EA101X }, 130 { USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_ENET }, 131 { USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_ENET2 }, 132 { USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_ENET3 }, 133 { USB_VENDOR_PORTGEAR, USB_PRODUCT_PORTGEAR_EA8 }, 134 { USB_VENDOR_PORTGEAR, USB_PRODUCT_PORTGEAR_EA9 }, 135 { USB_VENDOR_PORTSMITH, USB_PRODUCT_PORTSMITH_EEA }, 136 { USB_VENDOR_SHARK, USB_PRODUCT_SHARK_PA }, 137 { USB_VENDOR_SILICOM, USB_PRODUCT_SILICOM_U2E }, 138 { USB_VENDOR_SILICOM, USB_PRODUCT_SILICOM_GPE }, 139 { USB_VENDOR_SMC, USB_PRODUCT_SMC_2102USB }, 140 { 0, 0 } 141 }; 142 143 static device_probe_t kue_match; 144 static device_attach_t kue_attach; 145 static device_detach_t kue_detach; 146 static device_shutdown_t kue_shutdown; 147 static int kue_encap(struct kue_softc *, struct mbuf *, int); 148 static void kue_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 149 static void kue_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 150 static void kue_start(struct ifnet *); 151 static void kue_rxstart(struct ifnet *); 152 static int kue_ioctl(struct ifnet *, u_long, caddr_t); 153 static void kue_init(void *); 154 static void kue_stop(struct kue_softc *); 155 static void kue_watchdog(struct ifnet *); 156 157 static void kue_setmulti(struct kue_softc *); 158 static void kue_reset(struct kue_softc *); 159 160 static usbd_status kue_do_request(usbd_device_handle, 161 usb_device_request_t *, void *); 162 static usbd_status kue_ctl(struct kue_softc *, int, u_int8_t, 163 u_int16_t, char *, int); 164 static usbd_status kue_setword(struct kue_softc *, u_int8_t, u_int16_t); 165 static int kue_load_fw(struct kue_softc *); 166 167 static device_method_t kue_methods[] = { 168 /* Device interface */ 169 DEVMETHOD(device_probe, kue_match), 170 DEVMETHOD(device_attach, kue_attach), 171 DEVMETHOD(device_detach, kue_detach), 172 DEVMETHOD(device_shutdown, kue_shutdown), 173 174 { 0, 0 } 175 }; 176 177 static driver_t kue_driver = { 178 "kue", 179 kue_methods, 180 sizeof(struct kue_softc) 181 }; 182 183 static devclass_t kue_devclass; 184 185 DRIVER_MODULE(kue, uhub, kue_driver, kue_devclass, usbd_driver_load, 0); 186 187 /* 188 * We have a custom do_request function which is almost like the 189 * regular do_request function, except it has a much longer timeout. 190 * Why? Because we need to make requests over the control endpoint 191 * to download the firmware to the device, which can take longer 192 * than the default timeout. 193 */ 194 static usbd_status 195 kue_do_request(usbd_device_handle dev, usb_device_request_t *req, void *data) 196 { 197 usbd_xfer_handle xfer; 198 usbd_status err; 199 200 xfer = usbd_alloc_xfer(dev); 201 usbd_setup_default_xfer(xfer, dev, 0, 500000, req, 202 data, UGETW(req->wLength), USBD_SHORT_XFER_OK, 0); 203 err = usbd_sync_transfer(xfer); 204 usbd_free_xfer(xfer); 205 return(err); 206 } 207 208 static usbd_status 209 kue_setword(struct kue_softc *sc, u_int8_t breq, u_int16_t word) 210 { 211 usbd_device_handle dev; 212 usb_device_request_t req; 213 usbd_status err; 214 215 if (sc->kue_dying) 216 return(USBD_NORMAL_COMPLETION); 217 218 dev = sc->kue_udev; 219 220 KUE_LOCK(sc); 221 222 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 223 224 req.bRequest = breq; 225 USETW(req.wValue, word); 226 USETW(req.wIndex, 0); 227 USETW(req.wLength, 0); 228 229 err = kue_do_request(dev, &req, NULL); 230 231 KUE_UNLOCK(sc); 232 233 return(err); 234 } 235 236 static usbd_status 237 kue_ctl(struct kue_softc *sc, int rw, u_int8_t breq, u_int16_t val, 238 char *data, int len) 239 { 240 usbd_device_handle dev; 241 usb_device_request_t req; 242 usbd_status err; 243 244 dev = sc->kue_udev; 245 246 if (sc->kue_dying) 247 return(USBD_NORMAL_COMPLETION); 248 249 KUE_LOCK(sc); 250 251 if (rw == KUE_CTL_WRITE) 252 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 253 else 254 req.bmRequestType = UT_READ_VENDOR_DEVICE; 255 256 req.bRequest = breq; 257 USETW(req.wValue, val); 258 USETW(req.wIndex, 0); 259 USETW(req.wLength, len); 260 261 err = kue_do_request(dev, &req, data); 262 263 KUE_UNLOCK(sc); 264 265 return(err); 266 } 267 268 static int 269 kue_load_fw(struct kue_softc *sc) 270 { 271 usbd_status err; 272 usb_device_descriptor_t *dd; 273 int hwrev; 274 275 dd = &sc->kue_udev->ddesc; 276 hwrev = UGETW(dd->bcdDevice); 277 278 /* 279 * First, check if we even need to load the firmware. 280 * If the device was still attached when the system was 281 * rebooted, it may already have firmware loaded in it. 282 * If this is the case, we don't need to do it again. 283 * And in fact, if we try to load it again, we'll hang, 284 * so we have to avoid this condition if we don't want 285 * to look stupid. 286 * 287 * We can test this quickly by checking the bcdRevision 288 * code. The NIC will return a different revision code if 289 * it's probed while the firmware is still loaded and 290 * running. 291 */ 292 if (hwrev == 0x0202) 293 return(0); 294 295 /* Load code segment */ 296 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 297 0, kue_code_seg, sizeof(kue_code_seg)); 298 if (err) { 299 device_printf(sc->kue_dev, "failed to load code segment: %s\n", 300 usbd_errstr(err)); 301 return(ENXIO); 302 } 303 304 /* Load fixup segment */ 305 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 306 0, kue_fix_seg, sizeof(kue_fix_seg)); 307 if (err) { 308 device_printf(sc->kue_dev, "failed to load fixup segment: %s\n", 309 usbd_errstr(err)); 310 return(ENXIO); 311 } 312 313 /* Send trigger command. */ 314 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 315 0, kue_trig_seg, sizeof(kue_trig_seg)); 316 if (err) { 317 device_printf(sc->kue_dev, "failed to load trigger segment: %s\n", 318 usbd_errstr(err)); 319 return(ENXIO); 320 } 321 322 return(0); 323 } 324 325 static void 326 kue_setmulti(struct kue_softc *sc) 327 { 328 struct ifnet *ifp; 329 struct ifmultiaddr *ifma; 330 int i = 0; 331 332 ifp = sc->kue_ifp; 333 334 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 335 sc->kue_rxfilt |= KUE_RXFILT_ALLMULTI; 336 sc->kue_rxfilt &= ~KUE_RXFILT_MULTICAST; 337 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->kue_rxfilt); 338 return; 339 } 340 341 sc->kue_rxfilt &= ~KUE_RXFILT_ALLMULTI; 342 343 IF_ADDR_LOCK(ifp); 344 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) 345 { 346 if (ifma->ifma_addr->sa_family != AF_LINK) 347 continue; 348 /* 349 * If there are too many addresses for the 350 * internal filter, switch over to allmulti mode. 351 */ 352 if (i == KUE_MCFILTCNT(sc)) 353 break; 354 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr), 355 KUE_MCFILT(sc, i), ETHER_ADDR_LEN); 356 i++; 357 } 358 IF_ADDR_UNLOCK(ifp); 359 360 if (i == KUE_MCFILTCNT(sc)) 361 sc->kue_rxfilt |= KUE_RXFILT_ALLMULTI; 362 else { 363 sc->kue_rxfilt |= KUE_RXFILT_MULTICAST; 364 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS, 365 i, sc->kue_mcfilters, i * ETHER_ADDR_LEN); 366 } 367 368 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->kue_rxfilt); 369 370 return; 371 } 372 373 /* 374 * Issue a SET_CONFIGURATION command to reset the MAC. This should be 375 * done after the firmware is loaded into the adapter in order to 376 * bring it into proper operation. 377 */ 378 static void 379 kue_reset(struct kue_softc *sc) 380 { 381 if (usbd_set_config_no(sc->kue_udev, KUE_CONFIG_NO, 0) || 382 usbd_device2interface_handle(sc->kue_udev, KUE_IFACE_IDX, 383 &sc->kue_iface)) { 384 device_printf(sc->kue_dev, "getting interface handle failed\n"); 385 } 386 387 /* Wait a little while for the chip to get its brains in order. */ 388 DELAY(1000); 389 return; 390 } 391 392 /* 393 * Probe for a KLSI chip. 394 */ 395 static int 396 kue_match(device_t self) 397 { 398 struct usb_attach_arg *uaa = device_get_ivars(self); 399 struct kue_type *t; 400 401 if (!uaa->iface) 402 return(UMATCH_NONE); 403 404 t = kue_devs; 405 while (t->kue_vid) { 406 if (uaa->vendor == t->kue_vid && uaa->product == t->kue_did) 407 return (UMATCH_VENDOR_PRODUCT); 408 t++; 409 } 410 return (UMATCH_NONE); 411 } 412 413 /* 414 * Attach the interface. Allocate softc structures, do 415 * setup and ethernet/BPF attach. 416 */ 417 static int 418 kue_attach(device_t self) 419 { 420 struct kue_softc *sc = device_get_softc(self); 421 struct usb_attach_arg *uaa = device_get_ivars(self); 422 struct ifnet *ifp; 423 usbd_status err; 424 usb_interface_descriptor_t *id; 425 usb_endpoint_descriptor_t *ed; 426 int i; 427 428 sc->kue_dev = self; 429 sc->kue_iface = uaa->iface; 430 sc->kue_udev = uaa->device; 431 432 id = usbd_get_interface_descriptor(uaa->iface); 433 434 /* Find endpoints. */ 435 for (i = 0; i < id->bNumEndpoints; i++) { 436 ed = usbd_interface2endpoint_descriptor(uaa->iface, i); 437 if (!ed) { 438 device_printf(sc->kue_dev, "couldn't get ep %d\n", i); 439 return ENXIO; 440 } 441 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 442 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 443 sc->kue_ed[KUE_ENDPT_RX] = ed->bEndpointAddress; 444 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 445 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 446 sc->kue_ed[KUE_ENDPT_TX] = ed->bEndpointAddress; 447 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 448 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 449 sc->kue_ed[KUE_ENDPT_INTR] = ed->bEndpointAddress; 450 } 451 } 452 453 mtx_init(&sc->kue_mtx, device_get_nameunit(self), MTX_NETWORK_LOCK, 454 MTX_DEF | MTX_RECURSE); 455 KUE_LOCK(sc); 456 457 /* Load the firmware into the NIC. */ 458 if (kue_load_fw(sc)) { 459 KUE_UNLOCK(sc); 460 mtx_destroy(&sc->kue_mtx); 461 return ENXIO; 462 } 463 464 /* Reset the adapter. */ 465 kue_reset(sc); 466 467 /* Read ethernet descriptor */ 468 err = kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR, 469 0, (char *)&sc->kue_desc, sizeof(sc->kue_desc)); 470 471 sc->kue_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN, 472 M_USBDEV, M_NOWAIT); 473 474 ifp = sc->kue_ifp = if_alloc(IFT_ETHER); 475 if (ifp == NULL) { 476 device_printf(sc->kue_dev, "can not if_alloc()\n"); 477 KUE_UNLOCK(sc); 478 mtx_destroy(&sc->kue_mtx); 479 return ENXIO; 480 } 481 ifp->if_softc = sc; 482 if_initname(ifp, "kue", device_get_unit(sc->kue_dev)); 483 ifp->if_mtu = ETHERMTU; 484 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST | 485 IFF_NEEDSGIANT; 486 ifp->if_ioctl = kue_ioctl; 487 ifp->if_start = kue_start; 488 ifp->if_watchdog = kue_watchdog; 489 ifp->if_init = kue_init; 490 ifp->if_baudrate = 10000000; 491 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 492 493 sc->kue_qdat.ifp = ifp; 494 sc->kue_qdat.if_rxstart = kue_rxstart; 495 496 /* 497 * Call MI attach routine. 498 */ 499 ether_ifattach(ifp, sc->kue_desc.kue_macaddr); 500 usb_register_netisr(); 501 sc->kue_dying = 0; 502 503 KUE_UNLOCK(sc); 504 505 return 0; 506 } 507 508 static int 509 kue_detach(device_t dev) 510 { 511 struct kue_softc *sc; 512 struct ifnet *ifp; 513 514 sc = device_get_softc(dev); 515 KUE_LOCK(sc); 516 ifp = sc->kue_ifp; 517 518 sc->kue_dying = 1; 519 520 if (ifp != NULL) { 521 ether_ifdetach(ifp); 522 if_free(ifp); 523 } 524 525 if (sc->kue_ep[KUE_ENDPT_TX] != NULL) 526 usbd_abort_pipe(sc->kue_ep[KUE_ENDPT_TX]); 527 if (sc->kue_ep[KUE_ENDPT_RX] != NULL) 528 usbd_abort_pipe(sc->kue_ep[KUE_ENDPT_RX]); 529 if (sc->kue_ep[KUE_ENDPT_INTR] != NULL) 530 usbd_abort_pipe(sc->kue_ep[KUE_ENDPT_INTR]); 531 532 if (sc->kue_mcfilters != NULL) 533 free(sc->kue_mcfilters, M_USBDEV); 534 535 KUE_UNLOCK(sc); 536 mtx_destroy(&sc->kue_mtx); 537 538 return(0); 539 } 540 541 static void 542 kue_rxstart(struct ifnet *ifp) 543 { 544 struct kue_softc *sc; 545 struct ue_chain *c; 546 547 sc = ifp->if_softc; 548 KUE_LOCK(sc); 549 c = &sc->kue_cdata.ue_rx_chain[sc->kue_cdata.ue_rx_prod]; 550 551 c->ue_mbuf = usb_ether_newbuf(); 552 if (c->ue_mbuf == NULL) { 553 device_printf(sc->kue_dev, "no memory for rx list " 554 "-- packet dropped!\n"); 555 ifp->if_ierrors++; 556 KUE_UNLOCK(sc); 557 return; 558 } 559 560 /* Setup new transfer. */ 561 usbd_setup_xfer(c->ue_xfer, sc->kue_ep[KUE_ENDPT_RX], 562 c, mtod(c->ue_mbuf, char *), UE_BUFSZ, USBD_SHORT_XFER_OK, 563 USBD_NO_TIMEOUT, kue_rxeof); 564 usbd_transfer(c->ue_xfer); 565 566 KUE_UNLOCK(sc); 567 568 return; 569 } 570 571 /* 572 * A frame has been uploaded: pass the resulting mbuf chain up to 573 * the higher level protocols. 574 */ 575 static void kue_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, 576 usbd_status status) 577 { 578 struct kue_softc *sc; 579 struct ue_chain *c; 580 struct mbuf *m; 581 struct ifnet *ifp; 582 int total_len = 0; 583 u_int16_t len; 584 585 c = priv; 586 sc = c->ue_sc; 587 KUE_LOCK(sc); 588 ifp = sc->kue_ifp; 589 590 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 591 KUE_UNLOCK(sc); 592 return; 593 } 594 595 if (status != USBD_NORMAL_COMPLETION) { 596 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 597 KUE_UNLOCK(sc); 598 return; 599 } 600 if (usbd_ratecheck(&sc->kue_rx_notice)) 601 device_printf(sc->kue_dev, "usb error on rx: %s\n", 602 usbd_errstr(status)); 603 if (status == USBD_STALLED) 604 usbd_clear_endpoint_stall(sc->kue_ep[KUE_ENDPT_RX]); 605 goto done; 606 } 607 608 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 609 m = c->ue_mbuf; 610 if (total_len <= 1) 611 goto done; 612 613 len = *mtod(m, u_int16_t *); 614 m_adj(m, sizeof(u_int16_t)); 615 616 /* No errors; receive the packet. */ 617 total_len = len; 618 619 if (len < sizeof(struct ether_header)) { 620 ifp->if_ierrors++; 621 goto done; 622 } 623 624 ifp->if_ipackets++; 625 m->m_pkthdr.rcvif = (void *)&sc->kue_qdat; 626 m->m_pkthdr.len = m->m_len = total_len; 627 628 /* Put the packet on the special USB input queue. */ 629 usb_ether_input(m); 630 KUE_UNLOCK(sc); 631 632 return; 633 done: 634 635 /* Setup new transfer. */ 636 usbd_setup_xfer(c->ue_xfer, sc->kue_ep[KUE_ENDPT_RX], 637 c, mtod(c->ue_mbuf, char *), UE_BUFSZ, USBD_SHORT_XFER_OK, 638 USBD_NO_TIMEOUT, kue_rxeof); 639 usbd_transfer(c->ue_xfer); 640 KUE_UNLOCK(sc); 641 642 return; 643 } 644 645 /* 646 * A frame was downloaded to the chip. It's safe for us to clean up 647 * the list buffers. 648 */ 649 650 static void 651 kue_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 652 { 653 struct kue_softc *sc; 654 struct ue_chain *c; 655 struct ifnet *ifp; 656 usbd_status err; 657 658 c = priv; 659 sc = c->ue_sc; 660 KUE_LOCK(sc); 661 662 ifp = sc->kue_ifp; 663 ifp->if_timer = 0; 664 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 665 666 if (status != USBD_NORMAL_COMPLETION) { 667 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 668 KUE_UNLOCK(sc); 669 return; 670 } 671 device_printf(sc->kue_dev, "usb error on tx: %s\n", 672 usbd_errstr(status)); 673 if (status == USBD_STALLED) 674 usbd_clear_endpoint_stall(sc->kue_ep[KUE_ENDPT_TX]); 675 KUE_UNLOCK(sc); 676 return; 677 } 678 679 usbd_get_xfer_status(c->ue_xfer, NULL, NULL, NULL, &err); 680 681 if (c->ue_mbuf != NULL) { 682 c->ue_mbuf->m_pkthdr.rcvif = ifp; 683 usb_tx_done(c->ue_mbuf); 684 c->ue_mbuf = NULL; 685 } 686 687 if (err) 688 ifp->if_oerrors++; 689 else 690 ifp->if_opackets++; 691 692 KUE_UNLOCK(sc); 693 694 return; 695 } 696 697 static int 698 kue_encap(struct kue_softc *sc, struct mbuf *m, int idx) 699 { 700 int total_len; 701 struct ue_chain *c; 702 usbd_status err; 703 704 c = &sc->kue_cdata.ue_tx_chain[idx]; 705 706 /* 707 * Copy the mbuf data into a contiguous buffer, leaving two 708 * bytes at the beginning to hold the frame length. 709 */ 710 m_copydata(m, 0, m->m_pkthdr.len, c->ue_buf + 2); 711 c->ue_mbuf = m; 712 713 total_len = m->m_pkthdr.len + 2; 714 total_len += 64 - (total_len % 64); 715 716 /* Frame length is specified in the first 2 bytes of the buffer. */ 717 c->ue_buf[0] = (u_int8_t)m->m_pkthdr.len; 718 c->ue_buf[1] = (u_int8_t)(m->m_pkthdr.len >> 8); 719 720 usbd_setup_xfer(c->ue_xfer, sc->kue_ep[KUE_ENDPT_TX], 721 c, c->ue_buf, total_len, 0, 10000, kue_txeof); 722 723 /* Transmit */ 724 err = usbd_transfer(c->ue_xfer); 725 if (err != USBD_IN_PROGRESS) { 726 kue_stop(sc); 727 return(EIO); 728 } 729 730 sc->kue_cdata.ue_tx_cnt++; 731 732 return(0); 733 } 734 735 static void 736 kue_start(struct ifnet *ifp) 737 { 738 struct kue_softc *sc; 739 struct mbuf *m_head = NULL; 740 741 sc = ifp->if_softc; 742 KUE_LOCK(sc); 743 744 if (ifp->if_drv_flags & IFF_DRV_OACTIVE) { 745 KUE_UNLOCK(sc); 746 return; 747 } 748 749 IF_DEQUEUE(&ifp->if_snd, m_head); 750 if (m_head == NULL) { 751 KUE_UNLOCK(sc); 752 return; 753 } 754 755 if (kue_encap(sc, m_head, 0)) { 756 IF_PREPEND(&ifp->if_snd, m_head); 757 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 758 KUE_UNLOCK(sc); 759 return; 760 } 761 762 /* 763 * If there's a BPF listener, bounce a copy of this frame 764 * to him. 765 */ 766 BPF_MTAP(ifp, m_head); 767 768 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 769 770 /* 771 * Set a timeout in case the chip goes out to lunch. 772 */ 773 ifp->if_timer = 5; 774 KUE_UNLOCK(sc); 775 776 return; 777 } 778 779 static void 780 kue_init(void *xsc) 781 { 782 struct kue_softc *sc = xsc; 783 struct ifnet *ifp = sc->kue_ifp; 784 struct ue_chain *c; 785 usbd_status err; 786 int i; 787 788 KUE_LOCK(sc); 789 790 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 791 KUE_UNLOCK(sc); 792 return; 793 } 794 795 /* Set MAC address */ 796 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC, 797 0, IF_LLADDR(sc->kue_ifp), ETHER_ADDR_LEN); 798 799 sc->kue_rxfilt = KUE_RXFILT_UNICAST|KUE_RXFILT_BROADCAST; 800 801 /* If we want promiscuous mode, set the allframes bit. */ 802 if (ifp->if_flags & IFF_PROMISC) 803 sc->kue_rxfilt |= KUE_RXFILT_PROMISC; 804 805 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->kue_rxfilt); 806 807 /* I'm not sure how to tune these. */ 808 #ifdef notdef 809 /* 810 * Leave this one alone for now; setting it 811 * wrong causes lockups on some machines/controllers. 812 */ 813 kue_setword(sc, KUE_CMD_SET_SOFS, 1); 814 #endif 815 kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64); 816 817 /* Init TX ring. */ 818 if (usb_ether_tx_list_init(sc, &sc->kue_cdata, 819 sc->kue_udev) == ENOBUFS) { 820 device_printf(sc->kue_dev, "tx list init failed\n"); 821 KUE_UNLOCK(sc); 822 return; 823 } 824 825 /* Init RX ring. */ 826 if (usb_ether_rx_list_init(sc, &sc->kue_cdata, 827 sc->kue_udev) == ENOBUFS) { 828 device_printf(sc->kue_dev, "rx list init failed\n"); 829 KUE_UNLOCK(sc); 830 return; 831 } 832 833 /* Load the multicast filter. */ 834 kue_setmulti(sc); 835 836 /* Open RX and TX pipes. */ 837 err = usbd_open_pipe(sc->kue_iface, sc->kue_ed[KUE_ENDPT_RX], 838 USBD_EXCLUSIVE_USE, &sc->kue_ep[KUE_ENDPT_RX]); 839 if (err) { 840 device_printf(sc->kue_dev, "open rx pipe failed: %s\n", 841 usbd_errstr(err)); 842 KUE_UNLOCK(sc); 843 return; 844 } 845 846 err = usbd_open_pipe(sc->kue_iface, sc->kue_ed[KUE_ENDPT_TX], 847 USBD_EXCLUSIVE_USE, &sc->kue_ep[KUE_ENDPT_TX]); 848 if (err) { 849 device_printf(sc->kue_dev, "open tx pipe failed: %s\n", 850 usbd_errstr(err)); 851 KUE_UNLOCK(sc); 852 return; 853 } 854 855 /* Start up the receive pipe. */ 856 for (i = 0; i < UE_RX_LIST_CNT; i++) { 857 c = &sc->kue_cdata.ue_rx_chain[i]; 858 usbd_setup_xfer(c->ue_xfer, sc->kue_ep[KUE_ENDPT_RX], 859 c, mtod(c->ue_mbuf, char *), UE_BUFSZ, 860 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, kue_rxeof); 861 usbd_transfer(c->ue_xfer); 862 } 863 864 ifp->if_drv_flags |= IFF_DRV_RUNNING; 865 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 866 867 KUE_UNLOCK(sc); 868 869 return; 870 } 871 872 static int 873 kue_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 874 { 875 struct kue_softc *sc = ifp->if_softc; 876 int error = 0; 877 878 KUE_LOCK(sc); 879 880 switch(command) { 881 case SIOCSIFFLAGS: 882 if (ifp->if_flags & IFF_UP) { 883 if (ifp->if_drv_flags & IFF_DRV_RUNNING && 884 ifp->if_flags & IFF_PROMISC && 885 !(sc->kue_if_flags & IFF_PROMISC)) { 886 sc->kue_rxfilt |= KUE_RXFILT_PROMISC; 887 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, 888 sc->kue_rxfilt); 889 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING && 890 !(ifp->if_flags & IFF_PROMISC) && 891 sc->kue_if_flags & IFF_PROMISC) { 892 sc->kue_rxfilt &= ~KUE_RXFILT_PROMISC; 893 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, 894 sc->kue_rxfilt); 895 } else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 896 kue_init(sc); 897 } else { 898 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 899 kue_stop(sc); 900 } 901 sc->kue_if_flags = ifp->if_flags; 902 error = 0; 903 break; 904 case SIOCADDMULTI: 905 case SIOCDELMULTI: 906 kue_setmulti(sc); 907 error = 0; 908 break; 909 default: 910 error = ether_ioctl(ifp, command, data); 911 break; 912 } 913 914 KUE_UNLOCK(sc); 915 916 return(error); 917 } 918 919 static void 920 kue_watchdog(struct ifnet *ifp) 921 { 922 struct kue_softc *sc; 923 struct ue_chain *c; 924 usbd_status stat; 925 926 sc = ifp->if_softc; 927 KUE_LOCK(sc); 928 ifp->if_oerrors++; 929 device_printf(sc->kue_dev, "watchdog timeout\n"); 930 931 c = &sc->kue_cdata.ue_tx_chain[0]; 932 usbd_get_xfer_status(c->ue_xfer, NULL, NULL, NULL, &stat); 933 kue_txeof(c->ue_xfer, c, stat); 934 935 if (ifp->if_snd.ifq_head != NULL) 936 kue_start(ifp); 937 KUE_UNLOCK(sc); 938 939 return; 940 } 941 942 /* 943 * Stop the adapter and free any mbufs allocated to the 944 * RX and TX lists. 945 */ 946 static void 947 kue_stop(struct kue_softc *sc) 948 { 949 usbd_status err; 950 struct ifnet *ifp; 951 952 KUE_LOCK(sc); 953 ifp = sc->kue_ifp; 954 ifp->if_timer = 0; 955 956 /* Stop transfers. */ 957 if (sc->kue_ep[KUE_ENDPT_RX] != NULL) { 958 err = usbd_abort_pipe(sc->kue_ep[KUE_ENDPT_RX]); 959 if (err) { 960 device_printf(sc->kue_dev, "abort rx pipe failed: %s\n", 961 usbd_errstr(err)); 962 } 963 err = usbd_close_pipe(sc->kue_ep[KUE_ENDPT_RX]); 964 if (err) { 965 device_printf(sc->kue_dev, "close rx pipe failed: %s\n", 966 usbd_errstr(err)); 967 } 968 sc->kue_ep[KUE_ENDPT_RX] = NULL; 969 } 970 971 if (sc->kue_ep[KUE_ENDPT_TX] != NULL) { 972 err = usbd_abort_pipe(sc->kue_ep[KUE_ENDPT_TX]); 973 if (err) { 974 device_printf(sc->kue_dev, "abort tx pipe failed: %s\n", 975 usbd_errstr(err)); 976 } 977 err = usbd_close_pipe(sc->kue_ep[KUE_ENDPT_TX]); 978 if (err) { 979 device_printf(sc->kue_dev, "close tx pipe failed: %s\n", 980 usbd_errstr(err)); 981 } 982 sc->kue_ep[KUE_ENDPT_TX] = NULL; 983 } 984 985 if (sc->kue_ep[KUE_ENDPT_INTR] != NULL) { 986 err = usbd_abort_pipe(sc->kue_ep[KUE_ENDPT_INTR]); 987 if (err) { 988 device_printf(sc->kue_dev, "abort intr pipe failed: %s\n", 989 usbd_errstr(err)); 990 } 991 err = usbd_close_pipe(sc->kue_ep[KUE_ENDPT_INTR]); 992 if (err) { 993 device_printf(sc->kue_dev, "close intr pipe failed: %s\n", 994 usbd_errstr(err)); 995 } 996 sc->kue_ep[KUE_ENDPT_INTR] = NULL; 997 } 998 999 /* Free RX resources. */ 1000 usb_ether_rx_list_free(&sc->kue_cdata); 1001 /* Free TX resources. */ 1002 usb_ether_tx_list_free(&sc->kue_cdata); 1003 1004 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 1005 KUE_UNLOCK(sc); 1006 1007 return; 1008 } 1009 1010 /* 1011 * Stop all chip I/O so that the kernel's probe routines don't 1012 * get confused by errant DMAs when rebooting. 1013 */ 1014 static int 1015 kue_shutdown(device_t dev) 1016 { 1017 struct kue_softc *sc; 1018 1019 sc = device_get_softc(dev); 1020 1021 kue_stop(sc); 1022 1023 return (0); 1024 }
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