1 /* $NetBSD: if_udav.c,v 1.2 2003/09/04 15:17:38 tsutsui Exp $ */ 2 /* $nabe: if_udav.c,v 1.3 2003/08/21 16:57:19 nabe Exp $ */ 3 /* $FreeBSD$ */ 4 /*- 5 * Copyright (c) 2003 6 * Shingo WATANABE <nabe@nabechan.org>. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. 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 THE AUTHOR 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 THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 */ 33 34 /* 35 * DM9601(DAVICOM USB to Ethernet MAC Controller with Integrated 10/100 PHY) 36 * The spec can be found at the following url. 37 * http://www.davicom.com.tw/big5/download/Data%20Sheet/DM9601-DS-P01-930914.pdf 38 */ 39 40 /* 41 * TODO: 42 * Interrupt Endpoint support 43 * External PHYs 44 */ 45 46 #include <sys/cdefs.h> 47 __FBSDID("$FreeBSD$"); 48 49 #include <sys/stdint.h> 50 #include <sys/stddef.h> 51 #include <sys/param.h> 52 #include <sys/queue.h> 53 #include <sys/types.h> 54 #include <sys/systm.h> 55 #include <sys/kernel.h> 56 #include <sys/bus.h> 57 #include <sys/linker_set.h> 58 #include <sys/module.h> 59 #include <sys/lock.h> 60 #include <sys/mutex.h> 61 #include <sys/condvar.h> 62 #include <sys/sysctl.h> 63 #include <sys/sx.h> 64 #include <sys/unistd.h> 65 #include <sys/callout.h> 66 #include <sys/malloc.h> 67 #include <sys/priv.h> 68 69 #include <dev/usb/usb.h> 70 #include <dev/usb/usbdi.h> 71 #include <dev/usb/usbdi_util.h> 72 #include "usbdevs.h" 73 74 #define USB_DEBUG_VAR udav_debug 75 #include <dev/usb/usb_debug.h> 76 #include <dev/usb/usb_process.h> 77 78 #include <dev/usb/net/usb_ethernet.h> 79 #include <dev/usb/net/if_udavreg.h> 80 81 /* prototypes */ 82 83 static device_probe_t udav_probe; 84 static device_attach_t udav_attach; 85 static device_detach_t udav_detach; 86 87 static usb_callback_t udav_bulk_write_callback; 88 static usb_callback_t udav_bulk_read_callback; 89 static usb_callback_t udav_intr_callback; 90 91 static uether_fn_t udav_attach_post; 92 static uether_fn_t udav_init; 93 static uether_fn_t udav_stop; 94 static uether_fn_t udav_start; 95 static uether_fn_t udav_tick; 96 static uether_fn_t udav_setmulti; 97 static uether_fn_t udav_setpromisc; 98 99 static int udav_csr_read(struct udav_softc *, uint16_t, void *, int); 100 static int udav_csr_write(struct udav_softc *, uint16_t, void *, int); 101 static uint8_t udav_csr_read1(struct udav_softc *, uint16_t); 102 static int udav_csr_write1(struct udav_softc *, uint16_t, uint8_t); 103 static void udav_reset(struct udav_softc *); 104 static int udav_ifmedia_upd(struct ifnet *); 105 static void udav_ifmedia_status(struct ifnet *, struct ifmediareq *); 106 107 static miibus_readreg_t udav_miibus_readreg; 108 static miibus_writereg_t udav_miibus_writereg; 109 static miibus_statchg_t udav_miibus_statchg; 110 111 static const struct usb_config udav_config[UDAV_N_TRANSFER] = { 112 113 [UDAV_BULK_DT_WR] = { 114 .type = UE_BULK, 115 .endpoint = UE_ADDR_ANY, 116 .direction = UE_DIR_OUT, 117 .bufsize = (MCLBYTES + 2), 118 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 119 .callback = udav_bulk_write_callback, 120 .timeout = 10000, /* 10 seconds */ 121 }, 122 123 [UDAV_BULK_DT_RD] = { 124 .type = UE_BULK, 125 .endpoint = UE_ADDR_ANY, 126 .direction = UE_DIR_IN, 127 .bufsize = (MCLBYTES + 3), 128 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 129 .callback = udav_bulk_read_callback, 130 .timeout = 0, /* no timeout */ 131 }, 132 133 [UDAV_INTR_DT_RD] = { 134 .type = UE_INTERRUPT, 135 .endpoint = UE_ADDR_ANY, 136 .direction = UE_DIR_IN, 137 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 138 .bufsize = 0, /* use wMaxPacketSize */ 139 .callback = udav_intr_callback, 140 }, 141 }; 142 143 static device_method_t udav_methods[] = { 144 /* Device interface */ 145 DEVMETHOD(device_probe, udav_probe), 146 DEVMETHOD(device_attach, udav_attach), 147 DEVMETHOD(device_detach, udav_detach), 148 149 /* bus interface */ 150 DEVMETHOD(bus_print_child, bus_generic_print_child), 151 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 152 153 /* MII interface */ 154 DEVMETHOD(miibus_readreg, udav_miibus_readreg), 155 DEVMETHOD(miibus_writereg, udav_miibus_writereg), 156 DEVMETHOD(miibus_statchg, udav_miibus_statchg), 157 158 {0, 0} 159 }; 160 161 static driver_t udav_driver = { 162 .name = "udav", 163 .methods = udav_methods, 164 .size = sizeof(struct udav_softc), 165 }; 166 167 static devclass_t udav_devclass; 168 169 DRIVER_MODULE(udav, uhub, udav_driver, udav_devclass, NULL, 0); 170 DRIVER_MODULE(miibus, udav, miibus_driver, miibus_devclass, 0, 0); 171 MODULE_DEPEND(udav, uether, 1, 1, 1); 172 MODULE_DEPEND(udav, usb, 1, 1, 1); 173 MODULE_DEPEND(udav, ether, 1, 1, 1); 174 MODULE_DEPEND(udav, miibus, 1, 1, 1); 175 176 static const struct usb_ether_methods udav_ue_methods = { 177 .ue_attach_post = udav_attach_post, 178 .ue_start = udav_start, 179 .ue_init = udav_init, 180 .ue_stop = udav_stop, 181 .ue_tick = udav_tick, 182 .ue_setmulti = udav_setmulti, 183 .ue_setpromisc = udav_setpromisc, 184 .ue_mii_upd = udav_ifmedia_upd, 185 .ue_mii_sts = udav_ifmedia_status, 186 }; 187 188 #ifdef USB_DEBUG 189 static int udav_debug = 0; 190 191 SYSCTL_NODE(_hw_usb, OID_AUTO, udav, CTLFLAG_RW, 0, "USB udav"); 192 SYSCTL_INT(_hw_usb_udav, OID_AUTO, debug, CTLFLAG_RW, &udav_debug, 0, 193 "Debug level"); 194 #endif 195 196 #define UDAV_SETBIT(sc, reg, x) \ 197 udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) | (x)) 198 199 #define UDAV_CLRBIT(sc, reg, x) \ 200 udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) & ~(x)) 201 202 static const struct usb_device_id udav_devs[] = { 203 /* ShanTou DM9601 USB NIC */ 204 {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_DM9601, 0)}, 205 /* ShanTou ST268 USB NIC */ 206 {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_ST268, 0)}, 207 /* Corega USB-TXC */ 208 {USB_VPI(USB_VENDOR_COREGA, USB_PRODUCT_COREGA_FETHER_USB_TXC, 0)}, 209 }; 210 211 static void 212 udav_attach_post(struct usb_ether *ue) 213 { 214 struct udav_softc *sc = uether_getsc(ue); 215 216 /* reset the adapter */ 217 udav_reset(sc); 218 219 /* Get Ethernet Address */ 220 udav_csr_read(sc, UDAV_PAR, ue->ue_eaddr, ETHER_ADDR_LEN); 221 } 222 223 static int 224 udav_probe(device_t dev) 225 { 226 struct usb_attach_arg *uaa = device_get_ivars(dev); 227 228 if (uaa->usb_mode != USB_MODE_HOST) 229 return (ENXIO); 230 if (uaa->info.bConfigIndex != UDAV_CONFIG_INDEX) 231 return (ENXIO); 232 if (uaa->info.bIfaceIndex != UDAV_IFACE_INDEX) 233 return (ENXIO); 234 235 return (usbd_lookup_id_by_uaa(udav_devs, sizeof(udav_devs), uaa)); 236 } 237 238 static int 239 udav_attach(device_t dev) 240 { 241 struct usb_attach_arg *uaa = device_get_ivars(dev); 242 struct udav_softc *sc = device_get_softc(dev); 243 struct usb_ether *ue = &sc->sc_ue; 244 uint8_t iface_index; 245 int error; 246 247 sc->sc_flags = USB_GET_DRIVER_INFO(uaa); 248 249 device_set_usb_desc(dev); 250 251 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 252 253 iface_index = UDAV_IFACE_INDEX; 254 error = usbd_transfer_setup(uaa->device, &iface_index, 255 sc->sc_xfer, udav_config, UDAV_N_TRANSFER, sc, &sc->sc_mtx); 256 if (error) { 257 device_printf(dev, "allocating USB transfers failed\n"); 258 goto detach; 259 } 260 261 ue->ue_sc = sc; 262 ue->ue_dev = dev; 263 ue->ue_udev = uaa->device; 264 ue->ue_mtx = &sc->sc_mtx; 265 ue->ue_methods = &udav_ue_methods; 266 267 error = uether_ifattach(ue); 268 if (error) { 269 device_printf(dev, "could not attach interface\n"); 270 goto detach; 271 } 272 273 return (0); /* success */ 274 275 detach: 276 udav_detach(dev); 277 return (ENXIO); /* failure */ 278 } 279 280 static int 281 udav_detach(device_t dev) 282 { 283 struct udav_softc *sc = device_get_softc(dev); 284 struct usb_ether *ue = &sc->sc_ue; 285 286 usbd_transfer_unsetup(sc->sc_xfer, UDAV_N_TRANSFER); 287 uether_ifdetach(ue); 288 mtx_destroy(&sc->sc_mtx); 289 290 return (0); 291 } 292 293 #if 0 294 static int 295 udav_mem_read(struct udav_softc *sc, uint16_t offset, void *buf, 296 int len) 297 { 298 struct usb_device_request req; 299 300 len &= 0xff; 301 302 req.bmRequestType = UT_READ_VENDOR_DEVICE; 303 req.bRequest = UDAV_REQ_MEM_READ; 304 USETW(req.wValue, 0x0000); 305 USETW(req.wIndex, offset); 306 USETW(req.wLength, len); 307 308 return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); 309 } 310 311 static int 312 udav_mem_write(struct udav_softc *sc, uint16_t offset, void *buf, 313 int len) 314 { 315 struct usb_device_request req; 316 317 len &= 0xff; 318 319 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 320 req.bRequest = UDAV_REQ_MEM_WRITE; 321 USETW(req.wValue, 0x0000); 322 USETW(req.wIndex, offset); 323 USETW(req.wLength, len); 324 325 return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); 326 } 327 328 static int 329 udav_mem_write1(struct udav_softc *sc, uint16_t offset, 330 uint8_t ch) 331 { 332 struct usb_device_request req; 333 334 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 335 req.bRequest = UDAV_REQ_MEM_WRITE1; 336 USETW(req.wValue, ch); 337 USETW(req.wIndex, offset); 338 USETW(req.wLength, 0x0000); 339 340 return (uether_do_request(&sc->sc_ue, &req, NULL, 1000)); 341 } 342 #endif 343 344 static int 345 udav_csr_read(struct udav_softc *sc, uint16_t offset, void *buf, int len) 346 { 347 struct usb_device_request req; 348 349 len &= 0xff; 350 351 req.bmRequestType = UT_READ_VENDOR_DEVICE; 352 req.bRequest = UDAV_REQ_REG_READ; 353 USETW(req.wValue, 0x0000); 354 USETW(req.wIndex, offset); 355 USETW(req.wLength, len); 356 357 return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); 358 } 359 360 static int 361 udav_csr_write(struct udav_softc *sc, uint16_t offset, void *buf, int len) 362 { 363 struct usb_device_request req; 364 365 offset &= 0xff; 366 len &= 0xff; 367 368 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 369 req.bRequest = UDAV_REQ_REG_WRITE; 370 USETW(req.wValue, 0x0000); 371 USETW(req.wIndex, offset); 372 USETW(req.wLength, len); 373 374 return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); 375 } 376 377 static uint8_t 378 udav_csr_read1(struct udav_softc *sc, uint16_t offset) 379 { 380 uint8_t val; 381 382 udav_csr_read(sc, offset, &val, 1); 383 return (val); 384 } 385 386 static int 387 udav_csr_write1(struct udav_softc *sc, uint16_t offset, 388 uint8_t ch) 389 { 390 struct usb_device_request req; 391 392 offset &= 0xff; 393 394 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 395 req.bRequest = UDAV_REQ_REG_WRITE1; 396 USETW(req.wValue, ch); 397 USETW(req.wIndex, offset); 398 USETW(req.wLength, 0x0000); 399 400 return (uether_do_request(&sc->sc_ue, &req, NULL, 1000)); 401 } 402 403 static void 404 udav_init(struct usb_ether *ue) 405 { 406 struct udav_softc *sc = ue->ue_sc; 407 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 408 409 UDAV_LOCK_ASSERT(sc, MA_OWNED); 410 411 /* 412 * Cancel pending I/O 413 */ 414 udav_stop(ue); 415 416 /* set MAC address */ 417 udav_csr_write(sc, UDAV_PAR, IF_LLADDR(ifp), ETHER_ADDR_LEN); 418 419 /* initialize network control register */ 420 421 /* disable loopback */ 422 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_LBK0 | UDAV_NCR_LBK1); 423 424 /* Initialize RX control register */ 425 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_DIS_LONG | UDAV_RCR_DIS_CRC); 426 427 /* load multicast filter and update promiscious mode bit */ 428 udav_setpromisc(ue); 429 430 /* enable RX */ 431 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_RXEN); 432 433 /* clear POWER_DOWN state of internal PHY */ 434 UDAV_SETBIT(sc, UDAV_GPCR, UDAV_GPCR_GEP_CNTL0); 435 UDAV_CLRBIT(sc, UDAV_GPR, UDAV_GPR_GEPIO0); 436 437 usbd_xfer_set_stall(sc->sc_xfer[UDAV_BULK_DT_WR]); 438 439 ifp->if_drv_flags |= IFF_DRV_RUNNING; 440 udav_start(ue); 441 } 442 443 static void 444 udav_reset(struct udav_softc *sc) 445 { 446 int i; 447 448 /* Select PHY */ 449 #if 1 450 /* 451 * XXX: force select internal phy. 452 * external phy routines are not tested. 453 */ 454 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); 455 #else 456 if (sc->sc_flags & UDAV_EXT_PHY) 457 UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); 458 else 459 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); 460 #endif 461 462 UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_RST); 463 464 for (i = 0; i < UDAV_TX_TIMEOUT; i++) { 465 if (!(udav_csr_read1(sc, UDAV_NCR) & UDAV_NCR_RST)) 466 break; 467 if (uether_pause(&sc->sc_ue, hz / 100)) 468 break; 469 } 470 471 uether_pause(&sc->sc_ue, hz / 100); 472 } 473 474 #define UDAV_BITS 6 475 static void 476 udav_setmulti(struct usb_ether *ue) 477 { 478 struct udav_softc *sc = ue->ue_sc; 479 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 480 struct ifmultiaddr *ifma; 481 uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; 482 int h = 0; 483 484 UDAV_LOCK_ASSERT(sc, MA_OWNED); 485 486 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 487 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_ALL|UDAV_RCR_PRMSC); 488 return; 489 } 490 491 /* first, zot all the existing hash bits */ 492 memset(hashtbl, 0x00, sizeof(hashtbl)); 493 hashtbl[7] |= 0x80; /* broadcast address */ 494 udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl)); 495 496 /* now program new ones */ 497 if_maddr_rlock(ifp); 498 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) 499 { 500 if (ifma->ifma_addr->sa_family != AF_LINK) 501 continue; 502 h = ether_crc32_be(LLADDR((struct sockaddr_dl *) 503 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26; 504 hashtbl[h / 8] |= 1 << (h % 8); 505 } 506 if_maddr_runlock(ifp); 507 508 /* disable all multicast */ 509 UDAV_CLRBIT(sc, UDAV_RCR, UDAV_RCR_ALL); 510 511 /* write hash value to the register */ 512 udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl)); 513 } 514 515 static void 516 udav_setpromisc(struct usb_ether *ue) 517 { 518 struct udav_softc *sc = ue->ue_sc; 519 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 520 uint8_t rxmode; 521 522 rxmode = udav_csr_read1(sc, UDAV_RCR); 523 rxmode &= ~(UDAV_RCR_ALL | UDAV_RCR_PRMSC); 524 525 if (ifp->if_flags & IFF_PROMISC) 526 rxmode |= UDAV_RCR_ALL | UDAV_RCR_PRMSC; 527 else if (ifp->if_flags & IFF_ALLMULTI) 528 rxmode |= UDAV_RCR_ALL; 529 530 /* write new mode bits */ 531 udav_csr_write1(sc, UDAV_RCR, rxmode); 532 } 533 534 static void 535 udav_start(struct usb_ether *ue) 536 { 537 struct udav_softc *sc = ue->ue_sc; 538 539 /* 540 * start the USB transfers, if not already started: 541 */ 542 usbd_transfer_start(sc->sc_xfer[UDAV_INTR_DT_RD]); 543 usbd_transfer_start(sc->sc_xfer[UDAV_BULK_DT_RD]); 544 usbd_transfer_start(sc->sc_xfer[UDAV_BULK_DT_WR]); 545 } 546 547 static void 548 udav_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 549 { 550 struct udav_softc *sc = usbd_xfer_softc(xfer); 551 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 552 struct usb_page_cache *pc; 553 struct mbuf *m; 554 int extra_len; 555 int temp_len; 556 uint8_t buf[2]; 557 558 switch (USB_GET_STATE(xfer)) { 559 case USB_ST_TRANSFERRED: 560 DPRINTFN(11, "transfer complete\n"); 561 ifp->if_opackets++; 562 563 /* FALLTHROUGH */ 564 case USB_ST_SETUP: 565 tr_setup: 566 if ((sc->sc_flags & UDAV_FLAG_LINK) == 0) { 567 /* 568 * don't send anything if there is no link ! 569 */ 570 return; 571 } 572 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 573 574 if (m == NULL) 575 return; 576 if (m->m_pkthdr.len > MCLBYTES) 577 m->m_pkthdr.len = MCLBYTES; 578 if (m->m_pkthdr.len < UDAV_MIN_FRAME_LEN) { 579 extra_len = UDAV_MIN_FRAME_LEN - m->m_pkthdr.len; 580 } else { 581 extra_len = 0; 582 } 583 584 temp_len = (m->m_pkthdr.len + extra_len); 585 586 /* 587 * the frame length is specified in the first 2 bytes of the 588 * buffer 589 */ 590 buf[0] = (uint8_t)(temp_len); 591 buf[1] = (uint8_t)(temp_len >> 8); 592 593 temp_len += 2; 594 595 pc = usbd_xfer_get_frame(xfer, 0); 596 usbd_copy_in(pc, 0, buf, 2); 597 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len); 598 599 if (extra_len) 600 usbd_frame_zero(pc, temp_len - extra_len, extra_len); 601 /* 602 * if there's a BPF listener, bounce a copy 603 * of this frame to him: 604 */ 605 BPF_MTAP(ifp, m); 606 607 m_freem(m); 608 609 usbd_xfer_set_frame_len(xfer, 0, temp_len); 610 usbd_transfer_submit(xfer); 611 return; 612 613 default: /* Error */ 614 DPRINTFN(11, "transfer error, %s\n", 615 usbd_errstr(error)); 616 617 ifp->if_oerrors++; 618 619 if (error != USB_ERR_CANCELLED) { 620 /* try to clear stall first */ 621 usbd_xfer_set_stall(xfer); 622 goto tr_setup; 623 } 624 return; 625 } 626 } 627 628 static void 629 udav_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 630 { 631 struct udav_softc *sc = usbd_xfer_softc(xfer); 632 struct usb_ether *ue = &sc->sc_ue; 633 struct ifnet *ifp = uether_getifp(ue); 634 struct usb_page_cache *pc; 635 struct udav_rxpkt stat; 636 int len; 637 int actlen; 638 639 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 640 641 switch (USB_GET_STATE(xfer)) { 642 case USB_ST_TRANSFERRED: 643 644 if (actlen < sizeof(stat) + ETHER_CRC_LEN) { 645 ifp->if_ierrors++; 646 goto tr_setup; 647 } 648 pc = usbd_xfer_get_frame(xfer, 0); 649 usbd_copy_out(pc, 0, &stat, sizeof(stat)); 650 actlen -= sizeof(stat); 651 len = min(actlen, le16toh(stat.pktlen)); 652 len -= ETHER_CRC_LEN; 653 654 if (stat.rxstat & UDAV_RSR_LCS) { 655 ifp->if_collisions++; 656 goto tr_setup; 657 } 658 if (stat.rxstat & UDAV_RSR_ERR) { 659 ifp->if_ierrors++; 660 goto tr_setup; 661 } 662 uether_rxbuf(ue, pc, sizeof(stat), len); 663 /* FALLTHROUGH */ 664 case USB_ST_SETUP: 665 tr_setup: 666 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 667 usbd_transfer_submit(xfer); 668 uether_rxflush(ue); 669 return; 670 671 default: /* Error */ 672 DPRINTF("bulk read error, %s\n", 673 usbd_errstr(error)); 674 675 if (error != USB_ERR_CANCELLED) { 676 /* try to clear stall first */ 677 usbd_xfer_set_stall(xfer); 678 goto tr_setup; 679 } 680 return; 681 } 682 } 683 684 static void 685 udav_intr_callback(struct usb_xfer *xfer, usb_error_t error) 686 { 687 switch (USB_GET_STATE(xfer)) { 688 case USB_ST_TRANSFERRED: 689 case USB_ST_SETUP: 690 tr_setup: 691 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 692 usbd_transfer_submit(xfer); 693 return; 694 695 default: /* Error */ 696 if (error != USB_ERR_CANCELLED) { 697 /* try to clear stall first */ 698 usbd_xfer_set_stall(xfer); 699 goto tr_setup; 700 } 701 return; 702 } 703 } 704 705 static void 706 udav_stop(struct usb_ether *ue) 707 { 708 struct udav_softc *sc = ue->ue_sc; 709 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 710 711 UDAV_LOCK_ASSERT(sc, MA_OWNED); 712 713 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 714 sc->sc_flags &= ~UDAV_FLAG_LINK; 715 716 /* 717 * stop all the transfers, if not already stopped: 718 */ 719 usbd_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_WR]); 720 usbd_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_RD]); 721 usbd_transfer_stop(sc->sc_xfer[UDAV_INTR_DT_RD]); 722 723 udav_reset(sc); 724 } 725 726 static int 727 udav_ifmedia_upd(struct ifnet *ifp) 728 { 729 struct udav_softc *sc = ifp->if_softc; 730 struct mii_data *mii = GET_MII(sc); 731 732 UDAV_LOCK_ASSERT(sc, MA_OWNED); 733 734 sc->sc_flags &= ~UDAV_FLAG_LINK; 735 if (mii->mii_instance) { 736 struct mii_softc *miisc; 737 738 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 739 mii_phy_reset(miisc); 740 } 741 mii_mediachg(mii); 742 return (0); 743 } 744 745 static void 746 udav_ifmedia_status(struct ifnet *ifp, struct ifmediareq *ifmr) 747 { 748 struct udav_softc *sc = ifp->if_softc; 749 struct mii_data *mii = GET_MII(sc); 750 751 UDAV_LOCK(sc); 752 mii_pollstat(mii); 753 UDAV_UNLOCK(sc); 754 ifmr->ifm_active = mii->mii_media_active; 755 ifmr->ifm_status = mii->mii_media_status; 756 } 757 758 static void 759 udav_tick(struct usb_ether *ue) 760 { 761 struct udav_softc *sc = ue->ue_sc; 762 struct mii_data *mii = GET_MII(sc); 763 764 UDAV_LOCK_ASSERT(sc, MA_OWNED); 765 766 mii_tick(mii); 767 if ((sc->sc_flags & UDAV_FLAG_LINK) == 0 768 && mii->mii_media_status & IFM_ACTIVE && 769 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 770 sc->sc_flags |= UDAV_FLAG_LINK; 771 udav_start(ue); 772 } 773 } 774 775 static int 776 udav_miibus_readreg(device_t dev, int phy, int reg) 777 { 778 struct udav_softc *sc = device_get_softc(dev); 779 uint16_t data16; 780 uint8_t val[2]; 781 int locked; 782 783 /* XXX: one PHY only for the internal PHY */ 784 if (phy != 0) 785 return (0); 786 787 locked = mtx_owned(&sc->sc_mtx); 788 if (!locked) 789 UDAV_LOCK(sc); 790 791 /* select internal PHY and set PHY register address */ 792 udav_csr_write1(sc, UDAV_EPAR, 793 UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK)); 794 795 /* select PHY operation and start read command */ 796 udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRR); 797 798 /* XXX: should we wait? */ 799 800 /* end read command */ 801 UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRR); 802 803 /* retrieve the result from data registers */ 804 udav_csr_read(sc, UDAV_EPDRL, val, 2); 805 806 data16 = (val[0] | (val[1] << 8)); 807 808 DPRINTFN(11, "phy=%d reg=0x%04x => 0x%04x\n", 809 phy, reg, data16); 810 811 if (!locked) 812 UDAV_UNLOCK(sc); 813 return (data16); 814 } 815 816 static int 817 udav_miibus_writereg(device_t dev, int phy, int reg, int data) 818 { 819 struct udav_softc *sc = device_get_softc(dev); 820 uint8_t val[2]; 821 int locked; 822 823 /* XXX: one PHY only for the internal PHY */ 824 if (phy != 0) 825 return (0); 826 827 locked = mtx_owned(&sc->sc_mtx); 828 if (!locked) 829 UDAV_LOCK(sc); 830 831 /* select internal PHY and set PHY register address */ 832 udav_csr_write1(sc, UDAV_EPAR, 833 UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK)); 834 835 /* put the value to the data registers */ 836 val[0] = (data & 0xff); 837 val[1] = (data >> 8) & 0xff; 838 udav_csr_write(sc, UDAV_EPDRL, val, 2); 839 840 /* select PHY operation and start write command */ 841 udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRW); 842 843 /* XXX: should we wait? */ 844 845 /* end write command */ 846 UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRW); 847 848 if (!locked) 849 UDAV_UNLOCK(sc); 850 return (0); 851 } 852 853 static void 854 udav_miibus_statchg(device_t dev) 855 { 856 /* nothing to do */ 857 } 858