if_udav.c revision 190734
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: head/sys/dev/usb/net/if_udav.c 190734 2009-04-05 18:20:38Z thompsa $ */ 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: head/sys/dev/usb/net/if_udav.c 190734 2009-04-05 18:20:38Z thompsa $"); 48 49#include "usbdevs.h" 50#include <dev/usb/usb.h> 51#include <dev/usb/usb_mfunc.h> 52#include <dev/usb/usb_error.h> 53 54#define USB_DEBUG_VAR udav_debug 55 56#include <dev/usb/usb_core.h> 57#include <dev/usb/usb_lookup.h> 58#include <dev/usb/usb_process.h> 59#include <dev/usb/usb_debug.h> 60#include <dev/usb/usb_request.h> 61#include <dev/usb/usb_busdma.h> 62#include <dev/usb/usb_util.h> 63 64#include <dev/usb/net/usb_ethernet.h> 65#include <dev/usb/net/if_udavreg.h> 66 67/* prototypes */ 68 69static device_probe_t udav_probe; 70static device_attach_t udav_attach; 71static device_detach_t udav_detach; 72static device_shutdown_t udav_shutdown; 73 74static usb2_callback_t udav_bulk_write_callback; 75static usb2_callback_t udav_bulk_read_callback; 76static usb2_callback_t udav_intr_callback; 77 78static usb2_ether_fn_t udav_attach_post; 79static usb2_ether_fn_t udav_init; 80static usb2_ether_fn_t udav_stop; 81static usb2_ether_fn_t udav_start; 82static usb2_ether_fn_t udav_tick; 83static usb2_ether_fn_t udav_setmulti; 84static usb2_ether_fn_t udav_setpromisc; 85 86static int udav_csr_read(struct udav_softc *, uint16_t, void *, int); 87static int udav_csr_write(struct udav_softc *, uint16_t, void *, int); 88static uint8_t udav_csr_read1(struct udav_softc *, uint16_t); 89static int udav_csr_write1(struct udav_softc *, uint16_t, uint8_t); 90static void udav_reset(struct udav_softc *); 91static int udav_ifmedia_upd(struct ifnet *); 92static void udav_ifmedia_status(struct ifnet *, struct ifmediareq *); 93 94static miibus_readreg_t udav_miibus_readreg; 95static miibus_writereg_t udav_miibus_writereg; 96static miibus_statchg_t udav_miibus_statchg; 97 98static const struct usb2_config udav_config[UDAV_N_TRANSFER] = { 99 100 [UDAV_BULK_DT_WR] = { 101 .type = UE_BULK, 102 .endpoint = UE_ADDR_ANY, 103 .direction = UE_DIR_OUT, 104 .bufsize = (MCLBYTES + 2), 105 .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 106 .callback = udav_bulk_write_callback, 107 .timeout = 10000, /* 10 seconds */ 108 }, 109 110 [UDAV_BULK_DT_RD] = { 111 .type = UE_BULK, 112 .endpoint = UE_ADDR_ANY, 113 .direction = UE_DIR_IN, 114 .bufsize = (MCLBYTES + 3), 115 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 116 .callback = udav_bulk_read_callback, 117 .timeout = 0, /* no timeout */ 118 }, 119 120 [UDAV_INTR_DT_RD] = { 121 .type = UE_INTERRUPT, 122 .endpoint = UE_ADDR_ANY, 123 .direction = UE_DIR_IN, 124 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 125 .bufsize = 0, /* use wMaxPacketSize */ 126 .callback = udav_intr_callback, 127 }, 128}; 129 130static device_method_t udav_methods[] = { 131 /* Device interface */ 132 DEVMETHOD(device_probe, udav_probe), 133 DEVMETHOD(device_attach, udav_attach), 134 DEVMETHOD(device_detach, udav_detach), 135 DEVMETHOD(device_shutdown, udav_shutdown), 136 137 /* bus interface */ 138 DEVMETHOD(bus_print_child, bus_generic_print_child), 139 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 140 141 /* MII interface */ 142 DEVMETHOD(miibus_readreg, udav_miibus_readreg), 143 DEVMETHOD(miibus_writereg, udav_miibus_writereg), 144 DEVMETHOD(miibus_statchg, udav_miibus_statchg), 145 146 {0, 0} 147}; 148 149static driver_t udav_driver = { 150 .name = "udav", 151 .methods = udav_methods, 152 .size = sizeof(struct udav_softc), 153}; 154 155static devclass_t udav_devclass; 156 157DRIVER_MODULE(udav, uhub, udav_driver, udav_devclass, NULL, 0); 158DRIVER_MODULE(miibus, udav, miibus_driver, miibus_devclass, 0, 0); 159MODULE_DEPEND(udav, uether, 1, 1, 1); 160MODULE_DEPEND(udav, usb, 1, 1, 1); 161MODULE_DEPEND(udav, ether, 1, 1, 1); 162MODULE_DEPEND(udav, miibus, 1, 1, 1); 163 164static const struct usb2_ether_methods udav_ue_methods = { 165 .ue_attach_post = udav_attach_post, 166 .ue_start = udav_start, 167 .ue_init = udav_init, 168 .ue_stop = udav_stop, 169 .ue_tick = udav_tick, 170 .ue_setmulti = udav_setmulti, 171 .ue_setpromisc = udav_setpromisc, 172 .ue_mii_upd = udav_ifmedia_upd, 173 .ue_mii_sts = udav_ifmedia_status, 174}; 175 176#if USB_DEBUG 177static int udav_debug = 0; 178 179SYSCTL_NODE(_hw_usb2, OID_AUTO, udav, CTLFLAG_RW, 0, "USB udav"); 180SYSCTL_INT(_hw_usb2_udav, OID_AUTO, debug, CTLFLAG_RW, &udav_debug, 0, 181 "Debug level"); 182#endif 183 184#define UDAV_SETBIT(sc, reg, x) \ 185 udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) | (x)) 186 187#define UDAV_CLRBIT(sc, reg, x) \ 188 udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) & ~(x)) 189 190static const struct usb2_device_id udav_devs[] = { 191 /* ShanTou DM9601 USB NIC */ 192 {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_DM9601, 0)}, 193 /* ShanTou ST268 USB NIC */ 194 {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_ST268, 0)}, 195 /* Corega USB-TXC */ 196 {USB_VPI(USB_VENDOR_COREGA, USB_PRODUCT_COREGA_FETHER_USB_TXC, 0)}, 197}; 198 199static void 200udav_attach_post(struct usb2_ether *ue) 201{ 202 struct udav_softc *sc = usb2_ether_getsc(ue); 203 204 /* reset the adapter */ 205 udav_reset(sc); 206 207 /* Get Ethernet Address */ 208 udav_csr_read(sc, UDAV_PAR, ue->ue_eaddr, ETHER_ADDR_LEN); 209} 210 211static int 212udav_probe(device_t dev) 213{ 214 struct usb2_attach_arg *uaa = device_get_ivars(dev); 215 216 if (uaa->usb2_mode != USB_MODE_HOST) 217 return (ENXIO); 218 if (uaa->info.bConfigIndex != UDAV_CONFIG_INDEX) 219 return (ENXIO); 220 if (uaa->info.bIfaceIndex != UDAV_IFACE_INDEX) 221 return (ENXIO); 222 223 return (usb2_lookup_id_by_uaa(udav_devs, sizeof(udav_devs), uaa)); 224} 225 226static int 227udav_attach(device_t dev) 228{ 229 struct usb2_attach_arg *uaa = device_get_ivars(dev); 230 struct udav_softc *sc = device_get_softc(dev); 231 struct usb2_ether *ue = &sc->sc_ue; 232 uint8_t iface_index; 233 int error; 234 235 sc->sc_flags = USB_GET_DRIVER_INFO(uaa); 236 237 device_set_usb2_desc(dev); 238 239 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 240 241 iface_index = UDAV_IFACE_INDEX; 242 error = usb2_transfer_setup(uaa->device, &iface_index, 243 sc->sc_xfer, udav_config, UDAV_N_TRANSFER, sc, &sc->sc_mtx); 244 if (error) { 245 device_printf(dev, "allocating USB transfers failed!\n"); 246 goto detach; 247 } 248 249 ue->ue_sc = sc; 250 ue->ue_dev = dev; 251 ue->ue_udev = uaa->device; 252 ue->ue_mtx = &sc->sc_mtx; 253 ue->ue_methods = &udav_ue_methods; 254 255 error = usb2_ether_ifattach(ue); 256 if (error) { 257 device_printf(dev, "could not attach interface\n"); 258 goto detach; 259 } 260 261 return (0); /* success */ 262 263detach: 264 udav_detach(dev); 265 return (ENXIO); /* failure */ 266} 267 268static int 269udav_detach(device_t dev) 270{ 271 struct udav_softc *sc = device_get_softc(dev); 272 struct usb2_ether *ue = &sc->sc_ue; 273 274 usb2_transfer_unsetup(sc->sc_xfer, UDAV_N_TRANSFER); 275 usb2_ether_ifdetach(ue); 276 mtx_destroy(&sc->sc_mtx); 277 278 return (0); 279} 280 281#if 0 282static int 283udav_mem_read(struct udav_softc *sc, uint16_t offset, void *buf, 284 int len) 285{ 286 struct usb2_device_request req; 287 288 len &= 0xff; 289 290 req.bmRequestType = UT_READ_VENDOR_DEVICE; 291 req.bRequest = UDAV_REQ_MEM_READ; 292 USETW(req.wValue, 0x0000); 293 USETW(req.wIndex, offset); 294 USETW(req.wLength, len); 295 296 return (usb2_ether_do_request(&sc->sc_ue, &req, buf, 1000)); 297} 298 299static int 300udav_mem_write(struct udav_softc *sc, uint16_t offset, void *buf, 301 int len) 302{ 303 struct usb2_device_request req; 304 305 len &= 0xff; 306 307 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 308 req.bRequest = UDAV_REQ_MEM_WRITE; 309 USETW(req.wValue, 0x0000); 310 USETW(req.wIndex, offset); 311 USETW(req.wLength, len); 312 313 return (usb2_ether_do_request(&sc->sc_ue, &req, buf, 1000)); 314} 315 316static int 317udav_mem_write1(struct udav_softc *sc, uint16_t offset, 318 uint8_t ch) 319{ 320 struct usb2_device_request req; 321 322 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 323 req.bRequest = UDAV_REQ_MEM_WRITE1; 324 USETW(req.wValue, ch); 325 USETW(req.wIndex, offset); 326 USETW(req.wLength, 0x0000); 327 328 return (usb2_ether_do_request(&sc->sc_ue, &req, NULL, 1000)); 329} 330#endif 331 332static int 333udav_csr_read(struct udav_softc *sc, uint16_t offset, void *buf, int len) 334{ 335 struct usb2_device_request req; 336 337 len &= 0xff; 338 339 req.bmRequestType = UT_READ_VENDOR_DEVICE; 340 req.bRequest = UDAV_REQ_REG_READ; 341 USETW(req.wValue, 0x0000); 342 USETW(req.wIndex, offset); 343 USETW(req.wLength, len); 344 345 return (usb2_ether_do_request(&sc->sc_ue, &req, buf, 1000)); 346} 347 348static int 349udav_csr_write(struct udav_softc *sc, uint16_t offset, void *buf, int len) 350{ 351 struct usb2_device_request req; 352 353 offset &= 0xff; 354 len &= 0xff; 355 356 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 357 req.bRequest = UDAV_REQ_REG_WRITE; 358 USETW(req.wValue, 0x0000); 359 USETW(req.wIndex, offset); 360 USETW(req.wLength, len); 361 362 return (usb2_ether_do_request(&sc->sc_ue, &req, buf, 1000)); 363} 364 365static uint8_t 366udav_csr_read1(struct udav_softc *sc, uint16_t offset) 367{ 368 uint8_t val; 369 370 udav_csr_read(sc, offset, &val, 1); 371 return (val); 372} 373 374static int 375udav_csr_write1(struct udav_softc *sc, uint16_t offset, 376 uint8_t ch) 377{ 378 struct usb2_device_request req; 379 380 offset &= 0xff; 381 382 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 383 req.bRequest = UDAV_REQ_REG_WRITE1; 384 USETW(req.wValue, ch); 385 USETW(req.wIndex, offset); 386 USETW(req.wLength, 0x0000); 387 388 return (usb2_ether_do_request(&sc->sc_ue, &req, NULL, 1000)); 389} 390 391static void 392udav_init(struct usb2_ether *ue) 393{ 394 struct udav_softc *sc = ue->ue_sc; 395 struct ifnet *ifp = usb2_ether_getifp(&sc->sc_ue); 396 397 UDAV_LOCK_ASSERT(sc, MA_OWNED); 398 399 /* 400 * Cancel pending I/O 401 */ 402 udav_stop(ue); 403 404 /* set MAC address */ 405 udav_csr_write(sc, UDAV_PAR, IF_LLADDR(ifp), ETHER_ADDR_LEN); 406 407 /* initialize network control register */ 408 409 /* disable loopback */ 410 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_LBK0 | UDAV_NCR_LBK1); 411 412 /* Initialize RX control register */ 413 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_DIS_LONG | UDAV_RCR_DIS_CRC); 414 415 /* load multicast filter and update promiscious mode bit */ 416 udav_setpromisc(ue); 417 418 /* enable RX */ 419 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_RXEN); 420 421 /* clear POWER_DOWN state of internal PHY */ 422 UDAV_SETBIT(sc, UDAV_GPCR, UDAV_GPCR_GEP_CNTL0); 423 UDAV_CLRBIT(sc, UDAV_GPR, UDAV_GPR_GEPIO0); 424 425 usb2_transfer_set_stall(sc->sc_xfer[UDAV_BULK_DT_WR]); 426 427 ifp->if_drv_flags |= IFF_DRV_RUNNING; 428 udav_start(ue); 429} 430 431static void 432udav_reset(struct udav_softc *sc) 433{ 434 int i; 435 436 /* Select PHY */ 437#if 1 438 /* 439 * XXX: force select internal phy. 440 * external phy routines are not tested. 441 */ 442 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); 443#else 444 if (sc->sc_flags & UDAV_EXT_PHY) 445 UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); 446 else 447 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); 448#endif 449 450 UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_RST); 451 452 for (i = 0; i < UDAV_TX_TIMEOUT; i++) { 453 if (!(udav_csr_read1(sc, UDAV_NCR) & UDAV_NCR_RST)) 454 break; 455 if (usb2_ether_pause(&sc->sc_ue, hz / 100)) 456 break; 457 } 458 459 usb2_ether_pause(&sc->sc_ue, hz / 100); 460} 461 462#define UDAV_BITS 6 463static void 464udav_setmulti(struct usb2_ether *ue) 465{ 466 struct udav_softc *sc = ue->ue_sc; 467 struct ifnet *ifp = usb2_ether_getifp(&sc->sc_ue); 468 struct ifmultiaddr *ifma; 469 uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; 470 int h = 0; 471 472 UDAV_LOCK_ASSERT(sc, MA_OWNED); 473 474 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 475 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_ALL|UDAV_RCR_PRMSC); 476 return; 477 } 478 479 /* first, zot all the existing hash bits */ 480 memset(hashtbl, 0x00, sizeof(hashtbl)); 481 hashtbl[7] |= 0x80; /* broadcast address */ 482 udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl)); 483 484 /* now program new ones */ 485 IF_ADDR_LOCK(ifp); 486 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) 487 { 488 if (ifma->ifma_addr->sa_family != AF_LINK) 489 continue; 490 h = ether_crc32_be(LLADDR((struct sockaddr_dl *) 491 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26; 492 hashtbl[h / 8] |= 1 << (h % 8); 493 } 494 IF_ADDR_UNLOCK(ifp); 495 496 /* disable all multicast */ 497 UDAV_CLRBIT(sc, UDAV_RCR, UDAV_RCR_ALL); 498 499 /* write hash value to the register */ 500 udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl)); 501} 502 503static void 504udav_setpromisc(struct usb2_ether *ue) 505{ 506 struct udav_softc *sc = ue->ue_sc; 507 struct ifnet *ifp = usb2_ether_getifp(&sc->sc_ue); 508 uint8_t rxmode; 509 510 rxmode = udav_csr_read1(sc, UDAV_RCR); 511 rxmode &= ~(UDAV_RCR_ALL | UDAV_RCR_PRMSC); 512 513 if (ifp->if_flags & IFF_PROMISC) 514 rxmode |= UDAV_RCR_ALL | UDAV_RCR_PRMSC; 515 else if (ifp->if_flags & IFF_ALLMULTI) 516 rxmode |= UDAV_RCR_ALL; 517 518 /* write new mode bits */ 519 udav_csr_write1(sc, UDAV_RCR, rxmode); 520} 521 522static void 523udav_start(struct usb2_ether *ue) 524{ 525 struct udav_softc *sc = ue->ue_sc; 526 527 /* 528 * start the USB transfers, if not already started: 529 */ 530 usb2_transfer_start(sc->sc_xfer[UDAV_INTR_DT_RD]); 531 usb2_transfer_start(sc->sc_xfer[UDAV_BULK_DT_RD]); 532 usb2_transfer_start(sc->sc_xfer[UDAV_BULK_DT_WR]); 533} 534 535static void 536udav_bulk_write_callback(struct usb2_xfer *xfer) 537{ 538 struct udav_softc *sc = xfer->priv_sc; 539 struct ifnet *ifp = usb2_ether_getifp(&sc->sc_ue); 540 struct mbuf *m; 541 int extra_len; 542 int temp_len; 543 uint8_t buf[2]; 544 545 switch (USB_GET_STATE(xfer)) { 546 case USB_ST_TRANSFERRED: 547 DPRINTFN(11, "transfer complete\n"); 548 ifp->if_opackets++; 549 550 /* FALLTHROUGH */ 551 case USB_ST_SETUP: 552tr_setup: 553 if ((sc->sc_flags & UDAV_FLAG_LINK) == 0) { 554 /* 555 * don't send anything if there is no link ! 556 */ 557 return; 558 } 559 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 560 561 if (m == NULL) 562 return; 563 if (m->m_pkthdr.len > MCLBYTES) 564 m->m_pkthdr.len = MCLBYTES; 565 if (m->m_pkthdr.len < UDAV_MIN_FRAME_LEN) { 566 extra_len = UDAV_MIN_FRAME_LEN - m->m_pkthdr.len; 567 } else { 568 extra_len = 0; 569 } 570 571 temp_len = (m->m_pkthdr.len + extra_len); 572 573 /* 574 * the frame length is specified in the first 2 bytes of the 575 * buffer 576 */ 577 buf[0] = (uint8_t)(temp_len); 578 buf[1] = (uint8_t)(temp_len >> 8); 579 580 temp_len += 2; 581 582 usb2_copy_in(xfer->frbuffers, 0, buf, 2); 583 584 usb2_m_copy_in(xfer->frbuffers, 2, 585 m, 0, m->m_pkthdr.len); 586 587 if (extra_len) { 588 usb2_bzero(xfer->frbuffers, temp_len - extra_len, 589 extra_len); 590 } 591 /* 592 * if there's a BPF listener, bounce a copy 593 * of this frame to him: 594 */ 595 BPF_MTAP(ifp, m); 596 597 m_freem(m); 598 599 xfer->frlengths[0] = temp_len; 600 usb2_start_hardware(xfer); 601 return; 602 603 default: /* Error */ 604 DPRINTFN(11, "transfer error, %s\n", 605 usb2_errstr(xfer->error)); 606 607 ifp->if_oerrors++; 608 609 if (xfer->error != USB_ERR_CANCELLED) { 610 /* try to clear stall first */ 611 xfer->flags.stall_pipe = 1; 612 goto tr_setup; 613 } 614 return; 615 } 616} 617 618static void 619udav_bulk_read_callback(struct usb2_xfer *xfer) 620{ 621 struct udav_softc *sc = xfer->priv_sc; 622 struct usb2_ether *ue = &sc->sc_ue; 623 struct ifnet *ifp = usb2_ether_getifp(ue); 624 struct udav_rxpkt stat; 625 int len; 626 627 switch (USB_GET_STATE(xfer)) { 628 case USB_ST_TRANSFERRED: 629 630 if (xfer->actlen < sizeof(stat) + ETHER_CRC_LEN) { 631 ifp->if_ierrors++; 632 goto tr_setup; 633 } 634 usb2_copy_out(xfer->frbuffers, 0, &stat, sizeof(stat)); 635 xfer->actlen -= sizeof(stat); 636 len = min(xfer->actlen, le16toh(stat.pktlen)); 637 len -= ETHER_CRC_LEN; 638 639 if (stat.rxstat & UDAV_RSR_LCS) { 640 ifp->if_collisions++; 641 goto tr_setup; 642 } 643 if (stat.rxstat & UDAV_RSR_ERR) { 644 ifp->if_ierrors++; 645 goto tr_setup; 646 } 647 usb2_ether_rxbuf(ue, xfer->frbuffers, sizeof(stat), len); 648 /* FALLTHROUGH */ 649 case USB_ST_SETUP: 650tr_setup: 651 xfer->frlengths[0] = xfer->max_data_length; 652 usb2_start_hardware(xfer); 653 usb2_ether_rxflush(ue); 654 return; 655 656 default: /* Error */ 657 DPRINTF("bulk read error, %s\n", 658 usb2_errstr(xfer->error)); 659 660 if (xfer->error != USB_ERR_CANCELLED) { 661 /* try to clear stall first */ 662 xfer->flags.stall_pipe = 1; 663 goto tr_setup; 664 } 665 return; 666 } 667} 668 669static void 670udav_intr_callback(struct usb2_xfer *xfer) 671{ 672 switch (USB_GET_STATE(xfer)) { 673 case USB_ST_TRANSFERRED: 674 case USB_ST_SETUP: 675tr_setup: 676 xfer->frlengths[0] = xfer->max_data_length; 677 usb2_start_hardware(xfer); 678 return; 679 680 default: /* Error */ 681 if (xfer->error != USB_ERR_CANCELLED) { 682 /* try to clear stall first */ 683 xfer->flags.stall_pipe = 1; 684 goto tr_setup; 685 } 686 return; 687 } 688} 689 690static void 691udav_stop(struct usb2_ether *ue) 692{ 693 struct udav_softc *sc = ue->ue_sc; 694 struct ifnet *ifp = usb2_ether_getifp(&sc->sc_ue); 695 696 UDAV_LOCK_ASSERT(sc, MA_OWNED); 697 698 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 699 sc->sc_flags &= ~UDAV_FLAG_LINK; 700 701 /* 702 * stop all the transfers, if not already stopped: 703 */ 704 usb2_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_WR]); 705 usb2_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_RD]); 706 usb2_transfer_stop(sc->sc_xfer[UDAV_INTR_DT_RD]); 707 708 udav_reset(sc); 709} 710 711static int 712udav_ifmedia_upd(struct ifnet *ifp) 713{ 714 struct udav_softc *sc = ifp->if_softc; 715 struct mii_data *mii = GET_MII(sc); 716 717 UDAV_LOCK_ASSERT(sc, MA_OWNED); 718 719 sc->sc_flags &= ~UDAV_FLAG_LINK; 720 if (mii->mii_instance) { 721 struct mii_softc *miisc; 722 723 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 724 mii_phy_reset(miisc); 725 } 726 mii_mediachg(mii); 727 return (0); 728} 729 730static void 731udav_ifmedia_status(struct ifnet *ifp, struct ifmediareq *ifmr) 732{ 733 struct udav_softc *sc = ifp->if_softc; 734 struct mii_data *mii = GET_MII(sc); 735 736 UDAV_LOCK(sc); 737 mii_pollstat(mii); 738 UDAV_UNLOCK(sc); 739 ifmr->ifm_active = mii->mii_media_active; 740 ifmr->ifm_status = mii->mii_media_status; 741} 742 743static void 744udav_tick(struct usb2_ether *ue) 745{ 746 struct udav_softc *sc = ue->ue_sc; 747 struct mii_data *mii = GET_MII(sc); 748 749 UDAV_LOCK_ASSERT(sc, MA_OWNED); 750 751 mii_tick(mii); 752 if ((sc->sc_flags & UDAV_FLAG_LINK) == 0 753 && mii->mii_media_status & IFM_ACTIVE && 754 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 755 sc->sc_flags |= UDAV_FLAG_LINK; 756 udav_start(ue); 757 } 758} 759 760static int 761udav_miibus_readreg(device_t dev, int phy, int reg) 762{ 763 struct udav_softc *sc = device_get_softc(dev); 764 uint16_t data16; 765 uint8_t val[2]; 766 int locked; 767 768 /* XXX: one PHY only for the internal PHY */ 769 if (phy != 0) 770 return (0); 771 772 locked = mtx_owned(&sc->sc_mtx); 773 if (!locked) 774 UDAV_LOCK(sc); 775 776 /* select internal PHY and set PHY register address */ 777 udav_csr_write1(sc, UDAV_EPAR, 778 UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK)); 779 780 /* select PHY operation and start read command */ 781 udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRR); 782 783 /* XXX: should we wait? */ 784 785 /* end read command */ 786 UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRR); 787 788 /* retrieve the result from data registers */ 789 udav_csr_read(sc, UDAV_EPDRL, val, 2); 790 791 data16 = (val[0] | (val[1] << 8)); 792 793 DPRINTFN(11, "phy=%d reg=0x%04x => 0x%04x\n", 794 phy, reg, data16); 795 796 if (!locked) 797 UDAV_UNLOCK(sc); 798 return (data16); 799} 800 801static int 802udav_miibus_writereg(device_t dev, int phy, int reg, int data) 803{ 804 struct udav_softc *sc = device_get_softc(dev); 805 uint8_t val[2]; 806 int locked; 807 808 /* XXX: one PHY only for the internal PHY */ 809 if (phy != 0) 810 return (0); 811 812 locked = mtx_owned(&sc->sc_mtx); 813 if (!locked) 814 UDAV_LOCK(sc); 815 816 /* select internal PHY and set PHY register address */ 817 udav_csr_write1(sc, UDAV_EPAR, 818 UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK)); 819 820 /* put the value to the data registers */ 821 val[0] = (data & 0xff); 822 val[1] = (data >> 8) & 0xff; 823 udav_csr_write(sc, UDAV_EPDRL, val, 2); 824 825 /* select PHY operation and start write command */ 826 udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRW); 827 828 /* XXX: should we wait? */ 829 830 /* end write command */ 831 UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRW); 832 833 if (!locked) 834 UDAV_UNLOCK(sc); 835 return (0); 836} 837 838static void 839udav_miibus_statchg(device_t dev) 840{ 841 /* nothing to do */ 842} 843 844/* 845 * Stop all chip I/O so that the kernel's probe routines don't 846 * get confused by errant DMAs when rebooting. 847 */ 848static int 849udav_shutdown(device_t dev) 850{ 851 struct udav_softc *sc = device_get_softc(dev); 852 853 usb2_ether_ifshutdown(&sc->sc_ue); 854 855 return (0); 856} 857