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 MODULE_VERSION(udav, 1); 176 177 static const struct usb_ether_methods udav_ue_methods = { 178 .ue_attach_post = udav_attach_post, 179 .ue_start = udav_start, 180 .ue_init = udav_init, 181 .ue_stop = udav_stop, 182 .ue_tick = udav_tick, 183 .ue_setmulti = udav_setmulti, 184 .ue_setpromisc = udav_setpromisc, 185 .ue_mii_upd = udav_ifmedia_upd, 186 .ue_mii_sts = udav_ifmedia_status, 187 }; 188 189 #ifdef USB_DEBUG 190 static int udav_debug = 0; 191 192 SYSCTL_NODE(_hw_usb, OID_AUTO, udav, CTLFLAG_RW, 0, "USB udav"); 193 SYSCTL_INT(_hw_usb_udav, OID_AUTO, debug, CTLFLAG_RW, &udav_debug, 0, 194 "Debug level"); 195 #endif 196 197 #define UDAV_SETBIT(sc, reg, x) \ 198 udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) | (x)) 199 200 #define UDAV_CLRBIT(sc, reg, x) \ 201 udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) & ~(x)) 202 203 static const struct usb_device_id udav_devs[] = { 204 /* ShanTou DM9601 USB NIC */ 205 {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_DM9601, 0)}, 206 /* ShanTou ST268 USB NIC */ 207 {USB_VPI(USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_ST268, 0)}, 208 /* Corega USB-TXC */ 209 {USB_VPI(USB_VENDOR_COREGA, USB_PRODUCT_COREGA_FETHER_USB_TXC, 0)}, 210 }; 211 212 static void 213 udav_attach_post(struct usb_ether *ue) 214 { 215 struct udav_softc *sc = uether_getsc(ue); 216 217 /* reset the adapter */ 218 udav_reset(sc); 219 220 /* Get Ethernet Address */ 221 udav_csr_read(sc, UDAV_PAR, ue->ue_eaddr, ETHER_ADDR_LEN); 222 } 223 224 static int 225 udav_probe(device_t dev) 226 { 227 struct usb_attach_arg *uaa = device_get_ivars(dev); 228 229 if (uaa->usb_mode != USB_MODE_HOST) 230 return (ENXIO); 231 if (uaa->info.bConfigIndex != UDAV_CONFIG_INDEX) 232 return (ENXIO); 233 if (uaa->info.bIfaceIndex != UDAV_IFACE_INDEX) 234 return (ENXIO); 235 236 return (usbd_lookup_id_by_uaa(udav_devs, sizeof(udav_devs), uaa)); 237 } 238 239 static int 240 udav_attach(device_t dev) 241 { 242 struct usb_attach_arg *uaa = device_get_ivars(dev); 243 struct udav_softc *sc = device_get_softc(dev); 244 struct usb_ether *ue = &sc->sc_ue; 245 uint8_t iface_index; 246 int error; 247 248 sc->sc_flags = USB_GET_DRIVER_INFO(uaa); 249 250 device_set_usb_desc(dev); 251 252 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 253 254 iface_index = UDAV_IFACE_INDEX; 255 error = usbd_transfer_setup(uaa->device, &iface_index, 256 sc->sc_xfer, udav_config, UDAV_N_TRANSFER, sc, &sc->sc_mtx); 257 if (error) { 258 device_printf(dev, "allocating USB transfers failed\n"); 259 goto detach; 260 } 261 262 ue->ue_sc = sc; 263 ue->ue_dev = dev; 264 ue->ue_udev = uaa->device; 265 ue->ue_mtx = &sc->sc_mtx; 266 ue->ue_methods = &udav_ue_methods; 267 268 error = uether_ifattach(ue); 269 if (error) { 270 device_printf(dev, "could not attach interface\n"); 271 goto detach; 272 } 273 274 return (0); /* success */ 275 276 detach: 277 udav_detach(dev); 278 return (ENXIO); /* failure */ 279 } 280 281 static int 282 udav_detach(device_t dev) 283 { 284 struct udav_softc *sc = device_get_softc(dev); 285 struct usb_ether *ue = &sc->sc_ue; 286 287 usbd_transfer_unsetup(sc->sc_xfer, UDAV_N_TRANSFER); 288 uether_ifdetach(ue); 289 mtx_destroy(&sc->sc_mtx); 290 291 return (0); 292 } 293 294 #if 0 295 static int 296 udav_mem_read(struct udav_softc *sc, uint16_t offset, void *buf, 297 int len) 298 { 299 struct usb_device_request req; 300 301 len &= 0xff; 302 303 req.bmRequestType = UT_READ_VENDOR_DEVICE; 304 req.bRequest = UDAV_REQ_MEM_READ; 305 USETW(req.wValue, 0x0000); 306 USETW(req.wIndex, offset); 307 USETW(req.wLength, len); 308 309 return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); 310 } 311 312 static int 313 udav_mem_write(struct udav_softc *sc, uint16_t offset, void *buf, 314 int len) 315 { 316 struct usb_device_request req; 317 318 len &= 0xff; 319 320 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 321 req.bRequest = UDAV_REQ_MEM_WRITE; 322 USETW(req.wValue, 0x0000); 323 USETW(req.wIndex, offset); 324 USETW(req.wLength, len); 325 326 return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); 327 } 328 329 static int 330 udav_mem_write1(struct udav_softc *sc, uint16_t offset, 331 uint8_t ch) 332 { 333 struct usb_device_request req; 334 335 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 336 req.bRequest = UDAV_REQ_MEM_WRITE1; 337 USETW(req.wValue, ch); 338 USETW(req.wIndex, offset); 339 USETW(req.wLength, 0x0000); 340 341 return (uether_do_request(&sc->sc_ue, &req, NULL, 1000)); 342 } 343 #endif 344 345 static int 346 udav_csr_read(struct udav_softc *sc, uint16_t offset, void *buf, int len) 347 { 348 struct usb_device_request req; 349 350 len &= 0xff; 351 352 req.bmRequestType = UT_READ_VENDOR_DEVICE; 353 req.bRequest = UDAV_REQ_REG_READ; 354 USETW(req.wValue, 0x0000); 355 USETW(req.wIndex, offset); 356 USETW(req.wLength, len); 357 358 return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); 359 } 360 361 static int 362 udav_csr_write(struct udav_softc *sc, uint16_t offset, void *buf, int len) 363 { 364 struct usb_device_request req; 365 366 offset &= 0xff; 367 len &= 0xff; 368 369 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 370 req.bRequest = UDAV_REQ_REG_WRITE; 371 USETW(req.wValue, 0x0000); 372 USETW(req.wIndex, offset); 373 USETW(req.wLength, len); 374 375 return (uether_do_request(&sc->sc_ue, &req, buf, 1000)); 376 } 377 378 static uint8_t 379 udav_csr_read1(struct udav_softc *sc, uint16_t offset) 380 { 381 uint8_t val; 382 383 udav_csr_read(sc, offset, &val, 1); 384 return (val); 385 } 386 387 static int 388 udav_csr_write1(struct udav_softc *sc, uint16_t offset, 389 uint8_t ch) 390 { 391 struct usb_device_request req; 392 393 offset &= 0xff; 394 395 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 396 req.bRequest = UDAV_REQ_REG_WRITE1; 397 USETW(req.wValue, ch); 398 USETW(req.wIndex, offset); 399 USETW(req.wLength, 0x0000); 400 401 return (uether_do_request(&sc->sc_ue, &req, NULL, 1000)); 402 } 403 404 static void 405 udav_init(struct usb_ether *ue) 406 { 407 struct udav_softc *sc = ue->ue_sc; 408 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 409 410 UDAV_LOCK_ASSERT(sc, MA_OWNED); 411 412 /* 413 * Cancel pending I/O 414 */ 415 udav_stop(ue); 416 417 /* set MAC address */ 418 udav_csr_write(sc, UDAV_PAR, IF_LLADDR(ifp), ETHER_ADDR_LEN); 419 420 /* initialize network control register */ 421 422 /* disable loopback */ 423 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_LBK0 | UDAV_NCR_LBK1); 424 425 /* Initialize RX control register */ 426 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_DIS_LONG | UDAV_RCR_DIS_CRC); 427 428 /* load multicast filter and update promiscious mode bit */ 429 udav_setpromisc(ue); 430 431 /* enable RX */ 432 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_RXEN); 433 434 /* clear POWER_DOWN state of internal PHY */ 435 UDAV_SETBIT(sc, UDAV_GPCR, UDAV_GPCR_GEP_CNTL0); 436 UDAV_CLRBIT(sc, UDAV_GPR, UDAV_GPR_GEPIO0); 437 438 usbd_xfer_set_stall(sc->sc_xfer[UDAV_BULK_DT_WR]); 439 440 ifp->if_drv_flags |= IFF_DRV_RUNNING; 441 udav_start(ue); 442 } 443 444 static void 445 udav_reset(struct udav_softc *sc) 446 { 447 int i; 448 449 /* Select PHY */ 450 #if 1 451 /* 452 * XXX: force select internal phy. 453 * external phy routines are not tested. 454 */ 455 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); 456 #else 457 if (sc->sc_flags & UDAV_EXT_PHY) 458 UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); 459 else 460 UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); 461 #endif 462 463 UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_RST); 464 465 for (i = 0; i < UDAV_TX_TIMEOUT; i++) { 466 if (!(udav_csr_read1(sc, UDAV_NCR) & UDAV_NCR_RST)) 467 break; 468 if (uether_pause(&sc->sc_ue, hz / 100)) 469 break; 470 } 471 472 uether_pause(&sc->sc_ue, hz / 100); 473 } 474 475 #define UDAV_BITS 6 476 static void 477 udav_setmulti(struct usb_ether *ue) 478 { 479 struct udav_softc *sc = ue->ue_sc; 480 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 481 struct ifmultiaddr *ifma; 482 uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; 483 int h = 0; 484 485 UDAV_LOCK_ASSERT(sc, MA_OWNED); 486 487 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 488 UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_ALL|UDAV_RCR_PRMSC); 489 return; 490 } 491 492 /* first, zot all the existing hash bits */ 493 memset(hashtbl, 0x00, sizeof(hashtbl)); 494 hashtbl[7] |= 0x80; /* broadcast address */ 495 udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl)); 496 497 /* now program new ones */ 498 if_maddr_rlock(ifp); 499 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) 500 { 501 if (ifma->ifma_addr->sa_family != AF_LINK) 502 continue; 503 h = ether_crc32_be(LLADDR((struct sockaddr_dl *) 504 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26; 505 hashtbl[h / 8] |= 1 << (h % 8); 506 } 507 if_maddr_runlock(ifp); 508 509 /* disable all multicast */ 510 UDAV_CLRBIT(sc, UDAV_RCR, UDAV_RCR_ALL); 511 512 /* write hash value to the register */ 513 udav_csr_write(sc, UDAV_MAR, hashtbl, sizeof(hashtbl)); 514 } 515 516 static void 517 udav_setpromisc(struct usb_ether *ue) 518 { 519 struct udav_softc *sc = ue->ue_sc; 520 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 521 uint8_t rxmode; 522 523 rxmode = udav_csr_read1(sc, UDAV_RCR); 524 rxmode &= ~(UDAV_RCR_ALL | UDAV_RCR_PRMSC); 525 526 if (ifp->if_flags & IFF_PROMISC) 527 rxmode |= UDAV_RCR_ALL | UDAV_RCR_PRMSC; 528 else if (ifp->if_flags & IFF_ALLMULTI) 529 rxmode |= UDAV_RCR_ALL; 530 531 /* write new mode bits */ 532 udav_csr_write1(sc, UDAV_RCR, rxmode); 533 } 534 535 static void 536 udav_start(struct usb_ether *ue) 537 { 538 struct udav_softc *sc = ue->ue_sc; 539 540 /* 541 * start the USB transfers, if not already started: 542 */ 543 usbd_transfer_start(sc->sc_xfer[UDAV_INTR_DT_RD]); 544 usbd_transfer_start(sc->sc_xfer[UDAV_BULK_DT_RD]); 545 usbd_transfer_start(sc->sc_xfer[UDAV_BULK_DT_WR]); 546 } 547 548 static void 549 udav_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 550 { 551 struct udav_softc *sc = usbd_xfer_softc(xfer); 552 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 553 struct usb_page_cache *pc; 554 struct mbuf *m; 555 int extra_len; 556 int temp_len; 557 uint8_t buf[2]; 558 559 switch (USB_GET_STATE(xfer)) { 560 case USB_ST_TRANSFERRED: 561 DPRINTFN(11, "transfer complete\n"); 562 ifp->if_opackets++; 563 564 /* FALLTHROUGH */ 565 case USB_ST_SETUP: 566 tr_setup: 567 if ((sc->sc_flags & UDAV_FLAG_LINK) == 0) { 568 /* 569 * don't send anything if there is no link ! 570 */ 571 return; 572 } 573 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 574 575 if (m == NULL) 576 return; 577 if (m->m_pkthdr.len > MCLBYTES) 578 m->m_pkthdr.len = MCLBYTES; 579 if (m->m_pkthdr.len < UDAV_MIN_FRAME_LEN) { 580 extra_len = UDAV_MIN_FRAME_LEN - m->m_pkthdr.len; 581 } else { 582 extra_len = 0; 583 } 584 585 temp_len = (m->m_pkthdr.len + extra_len); 586 587 /* 588 * the frame length is specified in the first 2 bytes of the 589 * buffer 590 */ 591 buf[0] = (uint8_t)(temp_len); 592 buf[1] = (uint8_t)(temp_len >> 8); 593 594 temp_len += 2; 595 596 pc = usbd_xfer_get_frame(xfer, 0); 597 usbd_copy_in(pc, 0, buf, 2); 598 usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len); 599 600 if (extra_len) 601 usbd_frame_zero(pc, temp_len - extra_len, extra_len); 602 /* 603 * if there's a BPF listener, bounce a copy 604 * of this frame to him: 605 */ 606 BPF_MTAP(ifp, m); 607 608 m_freem(m); 609 610 usbd_xfer_set_frame_len(xfer, 0, temp_len); 611 usbd_transfer_submit(xfer); 612 return; 613 614 default: /* Error */ 615 DPRINTFN(11, "transfer error, %s\n", 616 usbd_errstr(error)); 617 618 ifp->if_oerrors++; 619 620 if (error != USB_ERR_CANCELLED) { 621 /* try to clear stall first */ 622 usbd_xfer_set_stall(xfer); 623 goto tr_setup; 624 } 625 return; 626 } 627 } 628 629 static void 630 udav_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 631 { 632 struct udav_softc *sc = usbd_xfer_softc(xfer); 633 struct usb_ether *ue = &sc->sc_ue; 634 struct ifnet *ifp = uether_getifp(ue); 635 struct usb_page_cache *pc; 636 struct udav_rxpkt stat; 637 int len; 638 int actlen; 639 640 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 641 642 switch (USB_GET_STATE(xfer)) { 643 case USB_ST_TRANSFERRED: 644 645 if (actlen < sizeof(stat) + ETHER_CRC_LEN) { 646 ifp->if_ierrors++; 647 goto tr_setup; 648 } 649 pc = usbd_xfer_get_frame(xfer, 0); 650 usbd_copy_out(pc, 0, &stat, sizeof(stat)); 651 actlen -= sizeof(stat); 652 len = min(actlen, le16toh(stat.pktlen)); 653 len -= ETHER_CRC_LEN; 654 655 if (stat.rxstat & UDAV_RSR_LCS) { 656 ifp->if_collisions++; 657 goto tr_setup; 658 } 659 if (stat.rxstat & UDAV_RSR_ERR) { 660 ifp->if_ierrors++; 661 goto tr_setup; 662 } 663 uether_rxbuf(ue, pc, sizeof(stat), len); 664 /* FALLTHROUGH */ 665 case USB_ST_SETUP: 666 tr_setup: 667 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 668 usbd_transfer_submit(xfer); 669 uether_rxflush(ue); 670 return; 671 672 default: /* Error */ 673 DPRINTF("bulk read error, %s\n", 674 usbd_errstr(error)); 675 676 if (error != USB_ERR_CANCELLED) { 677 /* try to clear stall first */ 678 usbd_xfer_set_stall(xfer); 679 goto tr_setup; 680 } 681 return; 682 } 683 } 684 685 static void 686 udav_intr_callback(struct usb_xfer *xfer, usb_error_t error) 687 { 688 switch (USB_GET_STATE(xfer)) { 689 case USB_ST_TRANSFERRED: 690 case USB_ST_SETUP: 691 tr_setup: 692 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 693 usbd_transfer_submit(xfer); 694 return; 695 696 default: /* Error */ 697 if (error != USB_ERR_CANCELLED) { 698 /* try to clear stall first */ 699 usbd_xfer_set_stall(xfer); 700 goto tr_setup; 701 } 702 return; 703 } 704 } 705 706 static void 707 udav_stop(struct usb_ether *ue) 708 { 709 struct udav_softc *sc = ue->ue_sc; 710 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 711 712 UDAV_LOCK_ASSERT(sc, MA_OWNED); 713 714 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 715 sc->sc_flags &= ~UDAV_FLAG_LINK; 716 717 /* 718 * stop all the transfers, if not already stopped: 719 */ 720 usbd_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_WR]); 721 usbd_transfer_stop(sc->sc_xfer[UDAV_BULK_DT_RD]); 722 usbd_transfer_stop(sc->sc_xfer[UDAV_INTR_DT_RD]); 723 724 udav_reset(sc); 725 } 726 727 static int 728 udav_ifmedia_upd(struct ifnet *ifp) 729 { 730 struct udav_softc *sc = ifp->if_softc; 731 struct mii_data *mii = GET_MII(sc); 732 733 UDAV_LOCK_ASSERT(sc, MA_OWNED); 734 735 sc->sc_flags &= ~UDAV_FLAG_LINK; 736 if (mii->mii_instance) { 737 struct mii_softc *miisc; 738 739 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 740 mii_phy_reset(miisc); 741 } 742 mii_mediachg(mii); 743 return (0); 744 } 745 746 static void 747 udav_ifmedia_status(struct ifnet *ifp, struct ifmediareq *ifmr) 748 { 749 struct udav_softc *sc = ifp->if_softc; 750 struct mii_data *mii = GET_MII(sc); 751 752 UDAV_LOCK(sc); 753 mii_pollstat(mii); 754 UDAV_UNLOCK(sc); 755 ifmr->ifm_active = mii->mii_media_active; 756 ifmr->ifm_status = mii->mii_media_status; 757 } 758 759 static void 760 udav_tick(struct usb_ether *ue) 761 { 762 struct udav_softc *sc = ue->ue_sc; 763 struct mii_data *mii = GET_MII(sc); 764 765 UDAV_LOCK_ASSERT(sc, MA_OWNED); 766 767 mii_tick(mii); 768 if ((sc->sc_flags & UDAV_FLAG_LINK) == 0 769 && mii->mii_media_status & IFM_ACTIVE && 770 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 771 sc->sc_flags |= UDAV_FLAG_LINK; 772 udav_start(ue); 773 } 774 } 775 776 static int 777 udav_miibus_readreg(device_t dev, int phy, int reg) 778 { 779 struct udav_softc *sc = device_get_softc(dev); 780 uint16_t data16; 781 uint8_t val[2]; 782 int locked; 783 784 /* XXX: one PHY only for the internal PHY */ 785 if (phy != 0) 786 return (0); 787 788 locked = mtx_owned(&sc->sc_mtx); 789 if (!locked) 790 UDAV_LOCK(sc); 791 792 /* select internal PHY and set PHY register address */ 793 udav_csr_write1(sc, UDAV_EPAR, 794 UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK)); 795 796 /* select PHY operation and start read command */ 797 udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRR); 798 799 /* XXX: should we wait? */ 800 801 /* end read command */ 802 UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRR); 803 804 /* retrieve the result from data registers */ 805 udav_csr_read(sc, UDAV_EPDRL, val, 2); 806 807 data16 = (val[0] | (val[1] << 8)); 808 809 DPRINTFN(11, "phy=%d reg=0x%04x => 0x%04x\n", 810 phy, reg, data16); 811 812 if (!locked) 813 UDAV_UNLOCK(sc); 814 return (data16); 815 } 816 817 static int 818 udav_miibus_writereg(device_t dev, int phy, int reg, int data) 819 { 820 struct udav_softc *sc = device_get_softc(dev); 821 uint8_t val[2]; 822 int locked; 823 824 /* XXX: one PHY only for the internal PHY */ 825 if (phy != 0) 826 return (0); 827 828 locked = mtx_owned(&sc->sc_mtx); 829 if (!locked) 830 UDAV_LOCK(sc); 831 832 /* select internal PHY and set PHY register address */ 833 udav_csr_write1(sc, UDAV_EPAR, 834 UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK)); 835 836 /* put the value to the data registers */ 837 val[0] = (data & 0xff); 838 val[1] = (data >> 8) & 0xff; 839 udav_csr_write(sc, UDAV_EPDRL, val, 2); 840 841 /* select PHY operation and start write command */ 842 udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRW); 843 844 /* XXX: should we wait? */ 845 846 /* end write command */ 847 UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRW); 848 849 if (!locked) 850 UDAV_UNLOCK(sc); 851 return (0); 852 } 853 854 static void 855 udav_miibus_statchg(device_t dev) 856 { 857 /* nothing to do */ 858 } 859