/* $NetBSD: if_udav.c,v 1.43.2.1 2017/04/05 19:54:19 snj Exp $ */ /* $nabe: if_udav.c,v 1.3 2003/08/21 16:57:19 nabe Exp $ */ /* * Copyright (c) 2003 * Shingo WATANABE . All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ /* * DM9601(DAVICOM USB to Ethernet MAC Controller with Integrated 10/100 PHY) * The spec can be found at the following url. * http://www.davicom.com.tw/big5/download/Data%20Sheet/DM9601-DS-F01-062202s.pdf */ /* * TODO: * Interrupt Endpoint support * External PHYs * powerhook() support? */ #include __KERNEL_RCSID(0, "$NetBSD: if_udav.c,v 1.43.2.1 2017/04/05 19:54:19 snj Exp $"); #ifdef _KERNEL_OPT #include "opt_inet.h" #include "opt_usb.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif #include #include #include #include #include #include #include /* Function declarations */ int udav_match(device_t, cfdata_t, void *); void udav_attach(device_t, device_t, void *); int udav_detach(device_t, int); int udav_activate(device_t, enum devact); extern struct cfdriver udav_cd; CFATTACH_DECL_NEW(udav, sizeof(struct udav_softc), udav_match, udav_attach, udav_detach, udav_activate); Static int udav_openpipes(struct udav_softc *); Static int udav_rx_list_init(struct udav_softc *); Static void udav_rx_list_free(struct udav_softc *); Static int udav_tx_list_init(struct udav_softc *); Static void udav_tx_list_free(struct udav_softc *); Static int udav_newbuf(struct udav_softc *, struct udav_chain *, struct mbuf *); Static void udav_start(struct ifnet *); Static void udav_start_locked(struct ifnet *); Static int udav_send(struct udav_softc *, struct mbuf *, int); Static void udav_txeof(struct usbd_xfer *, void *, usbd_status); Static void udav_rxeof(struct usbd_xfer *, void *, usbd_status); Static void udav_tick(void *); Static void udav_tick_task(void *); Static int udav_ioctl(struct ifnet *, u_long, void *); Static void udav_stop_task(struct udav_softc *); Static void udav_stop(struct ifnet *, int); Static void udav_stop_locked(struct ifnet *, int); Static void udav_watchdog(struct ifnet *); Static int udav_ifmedia_change(struct ifnet *); Static void udav_ifmedia_status(struct ifnet *, struct ifmediareq *); Static void udav_lock_mii(struct udav_softc *); Static void udav_unlock_mii(struct udav_softc *); Static int udav_miibus_readreg(device_t, int, int); Static void udav_miibus_writereg(device_t, int, int, int); Static void udav_miibus_statchg(struct ifnet *); Static int udav_init(struct ifnet *); Static int udav_init_locked(struct ifnet *); Static void udav_setmulti(struct udav_softc *); Static void udav_reset(struct udav_softc *); Static int udav_csr_read(struct udav_softc *, int, void *, int); Static int udav_csr_write(struct udav_softc *, int, void *, int); Static int udav_csr_read1(struct udav_softc *, int); Static int udav_csr_write1(struct udav_softc *, int, unsigned char); #if 0 Static int udav_mem_read(struct udav_softc *, int, void *, int); Static int udav_mem_write(struct udav_softc *, int, void *, int); Static int udav_mem_write1(struct udav_softc *, int, unsigned char); #endif /* Macros */ #ifdef UDAV_DEBUG #define DPRINTF(x) if (udavdebug) printf x #define DPRINTFN(n,x) if (udavdebug >= (n)) printf x int udavdebug = 0; #else #define DPRINTF(x) #define DPRINTFN(n,x) #endif #define UDAV_SETBIT(sc, reg, x) \ udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) | (x)) #define UDAV_CLRBIT(sc, reg, x) \ udav_csr_write1(sc, reg, udav_csr_read1(sc, reg) & ~(x)) static const struct udav_type { struct usb_devno udav_dev; uint16_t udav_flags; #define UDAV_EXT_PHY 0x0001 #define UDAV_NO_PHY 0x0002 } udav_devs [] = { /* Corega USB-TXC */ {{ USB_VENDOR_COREGA, USB_PRODUCT_COREGA_FETHER_USB_TXC }, 0}, /* ShanTou ST268 USB NIC */ {{ USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_ST268_USB_NIC }, 0}, /* ShanTou ADM8515 */ {{ USB_VENDOR_SHANTOU, USB_PRODUCT_SHANTOU_ADM8515 }, 0}, /* SUNRISING SR9600 */ {{ USB_VENDOR_SUNRISING, USB_PRODUCT_SUNRISING_SR9600 }, 0 }, /* SUNRISING QF9700 */ {{ USB_VENDOR_SUNRISING, USB_PRODUCT_SUNRISING_QF9700 }, UDAV_NO_PHY }, /* QUAN DM9601 */ {{USB_VENDOR_QUAN, USB_PRODUCT_QUAN_DM9601 }, 0}, #if 0 /* DAVICOM DM9601 Generic? */ /* XXX: The following ids was obtained from the data sheet. */ {{ 0x0a46, 0x9601 }, 0}, #endif }; #define udav_lookup(v, p) ((const struct udav_type *)usb_lookup(udav_devs, v, p)) /* Probe */ int udav_match(device_t parent, cfdata_t match, void *aux) { struct usb_attach_arg *uaa = aux; return udav_lookup(uaa->uaa_vendor, uaa->uaa_product) != NULL ? UMATCH_VENDOR_PRODUCT : UMATCH_NONE; } /* Attach */ void udav_attach(device_t parent, device_t self, void *aux) { struct udav_softc *sc = device_private(self); struct usb_attach_arg *uaa = aux; struct usbd_device *dev = uaa->uaa_device; struct usbd_interface *iface; usbd_status err; usb_interface_descriptor_t *id; usb_endpoint_descriptor_t *ed; char *devinfop; struct ifnet *ifp; struct mii_data *mii; u_char eaddr[ETHER_ADDR_LEN]; int i; sc->sc_dev = self; aprint_naive("\n"); aprint_normal("\n"); devinfop = usbd_devinfo_alloc(dev, 0); aprint_normal_dev(self, "%s\n", devinfop); usbd_devinfo_free(devinfop); /* Move the device into the configured state. */ err = usbd_set_config_no(dev, UDAV_CONFIG_NO, 1); /* idx 0 */ if (err) { aprint_error_dev(self, "failed to set configuration" ", err=%s\n", usbd_errstr(err)); goto bad; } usb_init_task(&sc->sc_tick_task, udav_tick_task, sc, 0); mutex_init(&sc->sc_mii_lock, MUTEX_DEFAULT, IPL_NONE); mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); mutex_init(&sc->sc_txlock, MUTEX_DEFAULT, IPL_SOFTUSB); mutex_init(&sc->sc_rxlock, MUTEX_DEFAULT, IPL_SOFTUSB); usb_init_task(&sc->sc_stop_task, (void (*)(void *))udav_stop_task, sc, 0); /* get control interface */ err = usbd_device2interface_handle(dev, UDAV_IFACE_INDEX, &iface); if (err) { aprint_error_dev(self, "failed to get interface, err=%s\n", usbd_errstr(err)); goto bad; } sc->sc_udev = dev; sc->sc_ctl_iface = iface; sc->sc_flags = udav_lookup(uaa->uaa_vendor, uaa->uaa_product)->udav_flags; /* get interface descriptor */ id = usbd_get_interface_descriptor(sc->sc_ctl_iface); /* find endpoints */ sc->sc_bulkin_no = sc->sc_bulkout_no = sc->sc_intrin_no = -1; for (i = 0; i < id->bNumEndpoints; i++) { ed = usbd_interface2endpoint_descriptor(sc->sc_ctl_iface, i); if (ed == NULL) { aprint_error_dev(self, "couldn't get endpoint %d\n", i); goto bad; } if ((ed->bmAttributes & UE_XFERTYPE) == UE_BULK && UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN) sc->sc_bulkin_no = ed->bEndpointAddress; /* RX */ else if ((ed->bmAttributes & UE_XFERTYPE) == UE_BULK && UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT) sc->sc_bulkout_no = ed->bEndpointAddress; /* TX */ else if ((ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT && UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN) sc->sc_intrin_no = ed->bEndpointAddress; /* Status */ } if (sc->sc_bulkin_no == -1 || sc->sc_bulkout_no == -1 || sc->sc_intrin_no == -1) { aprint_error_dev(self, "missing endpoint\n"); goto bad; } /* reset the adapter */ udav_reset(sc); /* Get Ethernet Address */ err = udav_csr_read(sc, UDAV_PAR, (void *)eaddr, ETHER_ADDR_LEN); if (err) { aprint_error_dev(self, "read MAC address failed\n"); goto bad; } /* Print Ethernet Address */ aprint_normal_dev(self, "Ethernet address %s\n", ether_sprintf(eaddr)); /* initialize interface information */ ifp = GET_IFP(sc); ifp->if_softc = sc; ifp->if_mtu = ETHERMTU; strlcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_start = udav_start; ifp->if_ioctl = udav_ioctl; ifp->if_watchdog = udav_watchdog; ifp->if_init = udav_init; ifp->if_stop = udav_stop; IFQ_SET_READY(&ifp->if_snd); if (ISSET(sc->sc_flags, UDAV_NO_PHY)) { sc->sc_link = 1; goto skipmii; } /* * Do ifmedia setup. */ mii = &sc->sc_mii; mii->mii_ifp = ifp; mii->mii_readreg = udav_miibus_readreg; mii->mii_writereg = udav_miibus_writereg; mii->mii_statchg = udav_miibus_statchg; mii->mii_flags = MIIF_AUTOTSLEEP; sc->sc_ec.ec_mii = mii; ifmedia_init(&mii->mii_media, 0, udav_ifmedia_change, udav_ifmedia_status); mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); if (LIST_FIRST(&mii->mii_phys) == NULL) { ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL); ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE); } else ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO); skipmii: /* attach the interface */ if_attach(ifp); ether_ifattach(ifp, eaddr); rnd_attach_source(&sc->rnd_source, device_xname(self), RND_TYPE_NET, RND_FLAG_DEFAULT); callout_init(&sc->sc_stat_ch, 0); sc->sc_attached = 1; usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, dev, sc->sc_dev); return; bad: sc->sc_dying = 1; return; } /* detach */ int udav_detach(device_t self, int flags) { struct udav_softc *sc = device_private(self); struct ifnet *ifp = GET_IFP(sc); int s; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); /* Detached before attached finished */ if (!sc->sc_attached) return 0; callout_stop(&sc->sc_stat_ch); /* Remove any pending tasks */ usb_rem_task(sc->sc_udev, &sc->sc_tick_task); usb_rem_task(sc->sc_udev, &sc->sc_stop_task); s = splusb(); if (--sc->sc_refcnt >= 0) { /* Wait for processes to go away */ usb_detach_waitold(sc->sc_dev); } if (ifp->if_flags & IFF_RUNNING) udav_stop(GET_IFP(sc), 1); rnd_detach_source(&sc->rnd_source); mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); ether_ifdetach(ifp); if_detach(ifp); #ifdef DIAGNOSTIC if (sc->sc_pipe_tx != NULL) aprint_debug_dev(self, "detach has active tx endpoint.\n"); if (sc->sc_pipe_rx != NULL) aprint_debug_dev(self, "detach has active rx endpoint.\n"); if (sc->sc_pipe_intr != NULL) aprint_debug_dev(self, "detach has active intr endpoint.\n"); #endif sc->sc_attached = 0; splx(s); usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); mutex_destroy(&sc->sc_mii_lock); mutex_destroy(&sc->sc_txlock); mutex_destroy(&sc->sc_rxlock); mutex_destroy(&sc->sc_lock); return 0; } #if 0 /* read memory */ Static int udav_mem_read(struct udav_softc *sc, int offset, void *buf, int len) { usb_device_request_t req; usbd_status err; if (sc == NULL) return 0; DPRINTFN(0x200, ("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return 0; offset &= 0xffff; len &= 0xff; req.bmRequestType = UT_READ_VENDOR_DEVICE; req.bRequest = UDAV_REQ_MEM_READ; USETW(req.wValue, 0x0000); USETW(req.wIndex, offset); USETW(req.wLength, len); sc->sc_refcnt++; err = usbd_do_request(sc->sc_udev, &req, buf); if (--sc->sc_refcnt < 0) usb_detach_wakeupold(sc->sc_dev); if (err) { DPRINTF(("%s: %s: read failed. off=%04x, err=%d\n", device_xname(sc->sc_dev), __func__, offset, err)); } return err; } /* write memory */ Static int udav_mem_write(struct udav_softc *sc, int offset, void *buf, int len) { usb_device_request_t req; usbd_status err; if (sc == NULL) return 0; DPRINTFN(0x200, ("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return 0; offset &= 0xffff; len &= 0xff; req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = UDAV_REQ_MEM_WRITE; USETW(req.wValue, 0x0000); USETW(req.wIndex, offset); USETW(req.wLength, len); sc->sc_refcnt++; err = usbd_do_request(sc->sc_udev, &req, buf); if (--sc->sc_refcnt < 0) usb_detach_wakeupold(sc->sc_dev); if (err) { DPRINTF(("%s: %s: write failed. off=%04x, err=%d\n", device_xname(sc->sc_dev), __func__, offset, err)); } return err; } /* write memory */ Static int udav_mem_write1(struct udav_softc *sc, int offset, unsigned char ch) { usb_device_request_t req; usbd_status err; if (sc == NULL) return 0; DPRINTFN(0x200, ("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return 0; offset &= 0xffff; req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = UDAV_REQ_MEM_WRITE1; USETW(req.wValue, ch); USETW(req.wIndex, offset); USETW(req.wLength, 0x0000); sc->sc_refcnt++; err = usbd_do_request(sc->sc_udev, &req, NULL); if (--sc->sc_refcnt < 0) usb_detach_wakeupold(sc->sc_dev); if (err) { DPRINTF(("%s: %s: write failed. off=%04x, err=%d\n", device_xname(sc->sc_dev), __func__, offset, err)); } return err; } #endif /* read register(s) */ Static int udav_csr_read(struct udav_softc *sc, int offset, void *buf, int len) { usb_device_request_t req; usbd_status err; if (sc == NULL) return 0; DPRINTFN(0x200, ("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return 0; offset &= 0xff; len &= 0xff; req.bmRequestType = UT_READ_VENDOR_DEVICE; req.bRequest = UDAV_REQ_REG_READ; USETW(req.wValue, 0x0000); USETW(req.wIndex, offset); USETW(req.wLength, len); sc->sc_refcnt++; err = usbd_do_request(sc->sc_udev, &req, buf); if (--sc->sc_refcnt < 0) usb_detach_wakeupold(sc->sc_dev); if (err) { DPRINTF(("%s: %s: read failed. off=%04x, err=%d\n", device_xname(sc->sc_dev), __func__, offset, err)); } return err; } /* write register(s) */ Static int udav_csr_write(struct udav_softc *sc, int offset, void *buf, int len) { usb_device_request_t req; usbd_status err; if (sc == NULL) return 0; DPRINTFN(0x200, ("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return 0; offset &= 0xff; len &= 0xff; req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = UDAV_REQ_REG_WRITE; USETW(req.wValue, 0x0000); USETW(req.wIndex, offset); USETW(req.wLength, len); sc->sc_refcnt++; err = usbd_do_request(sc->sc_udev, &req, buf); if (--sc->sc_refcnt < 0) usb_detach_wakeupold(sc->sc_dev); if (err) { DPRINTF(("%s: %s: write failed. off=%04x, err=%d\n", device_xname(sc->sc_dev), __func__, offset, err)); } return err; } Static int udav_csr_read1(struct udav_softc *sc, int offset) { uint8_t val = 0; if (sc == NULL) return 0; DPRINTFN(0x200, ("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return 0; return udav_csr_read(sc, offset, &val, 1) ? 0 : val; } /* write a register */ Static int udav_csr_write1(struct udav_softc *sc, int offset, unsigned char ch) { usb_device_request_t req; usbd_status err; if (sc == NULL) return 0; DPRINTFN(0x200, ("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return 0; offset &= 0xff; req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = UDAV_REQ_REG_WRITE1; USETW(req.wValue, ch); USETW(req.wIndex, offset); USETW(req.wLength, 0x0000); sc->sc_refcnt++; err = usbd_do_request(sc->sc_udev, &req, NULL); if (--sc->sc_refcnt < 0) usb_detach_wakeupold(sc->sc_dev); if (err) { DPRINTF(("%s: %s: write failed. off=%04x, err=%d\n", device_xname(sc->sc_dev), __func__, offset, err)); } return err; } Static int udav_init(struct ifnet *ifp) { struct udav_softc *sc = ifp->if_softc; mutex_enter(&sc->sc_lock); int ret = udav_init_locked(ifp); mutex_exit(&sc->sc_lock); return ret; } Static int udav_init_locked(struct ifnet *ifp) { struct udav_softc *sc = ifp->if_softc; struct mii_data *mii = GET_MII(sc); uint8_t eaddr[ETHER_ADDR_LEN]; int rc; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return EIO; /* Cancel pending I/O and free all TX/RX buffers */ udav_stop_locked(ifp, 1); memcpy(eaddr, CLLADDR(ifp->if_sadl), sizeof(eaddr)); udav_csr_write(sc, UDAV_PAR, eaddr, ETHER_ADDR_LEN); /* Initialize network control register */ /* Disable loopback */ UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_LBK0 | UDAV_NCR_LBK1); /* Initialize RX control register */ UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_DIS_LONG | UDAV_RCR_DIS_CRC); /* If we want promiscuous mode, accept all physical frames. */ if (ifp->if_flags & IFF_PROMISC) UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_ALL|UDAV_RCR_PRMSC); else UDAV_CLRBIT(sc, UDAV_RCR, UDAV_RCR_ALL|UDAV_RCR_PRMSC); /* Load the multicast filter */ udav_setmulti(sc); /* Enable RX */ UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_RXEN); /* clear POWER_DOWN state of internal PHY */ UDAV_SETBIT(sc, UDAV_GPCR, UDAV_GPCR_GEP_CNTL0); UDAV_CLRBIT(sc, UDAV_GPR, UDAV_GPR_GEPIO0); if ((rc = mii_mediachg(mii)) == ENXIO) rc = 0; else if (rc != 0) return rc; if (sc->sc_pipe_tx == NULL || sc->sc_pipe_rx == NULL) { if (udav_openpipes(sc)) { return EIO; } } /* Initialize transmit ring */ if (udav_tx_list_init(sc)) { printf("%s: tx list init failed\n", device_xname(sc->sc_dev)); goto fail; } /* Initialize receive ring */ if (udav_rx_list_init(sc)) { printf("%s: rx list init failed\n", device_xname(sc->sc_dev)); goto fail1; } /* Start up the receive pipe. */ for (size_t i = 0; i < UDAV_RX_LIST_CNT; i++) { struct udav_chain *c = &sc->sc_cdata.udav_rx_chain[i]; usbd_setup_xfer(c->udav_xfer, c, c->udav_buf, UDAV_BUFSZ, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, udav_rxeof); (void)usbd_transfer(c->udav_xfer); DPRINTF(("%s: %s: start read\n", device_xname(sc->sc_dev), __func__)); } ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; callout_reset(&sc->sc_stat_ch, hz, udav_tick, sc); return rc; fail1: udav_tx_list_free(sc); fail: return EIO; } Static void udav_reset(struct udav_softc *sc) { int i; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return; /* Select PHY */ #if 1 /* * XXX: force select internal phy. * external phy routines are not tested. */ UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); #else if (sc->sc_flags & UDAV_EXT_PHY) { UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); } else { UDAV_CLRBIT(sc, UDAV_NCR, UDAV_NCR_EXT_PHY); } #endif UDAV_SETBIT(sc, UDAV_NCR, UDAV_NCR_RST); for (i = 0; i < UDAV_TX_TIMEOUT; i++) { if (!(udav_csr_read1(sc, UDAV_NCR) & UDAV_NCR_RST)) break; delay(10); /* XXX */ } delay(10000); /* XXX */ } int udav_activate(device_t self, enum devact act) { struct udav_softc *sc = device_private(self); DPRINTF(("%s: %s: enter, act=%d\n", device_xname(sc->sc_dev), __func__, act)); switch (act) { case DVACT_DEACTIVATE: if_deactivate(&sc->sc_ec.ec_if); sc->sc_dying = 1; return 0; default: return EOPNOTSUPP; } } #define UDAV_BITS 6 #define UDAV_CALCHASH(addr) \ (ether_crc32_le((addr), ETHER_ADDR_LEN) & ((1 << UDAV_BITS) - 1)) Static void udav_setmulti(struct udav_softc *sc) { struct ifnet *ifp; struct ether_multi *enm; struct ether_multistep step; uint8_t hashes[8]; int h = 0; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return; ifp = GET_IFP(sc); if (ISSET(sc->sc_flags, UDAV_NO_PHY)) { UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_ALL); UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_PRMSC); return; } if (ifp->if_flags & IFF_PROMISC) { UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_ALL|UDAV_RCR_PRMSC); return; } else if (ifp->if_flags & IFF_ALLMULTI) { allmulti: ifp->if_flags |= IFF_ALLMULTI; UDAV_SETBIT(sc, UDAV_RCR, UDAV_RCR_ALL); UDAV_CLRBIT(sc, UDAV_RCR, UDAV_RCR_PRMSC); return; } /* first, zot all the existing hash bits */ memset(hashes, 0x00, sizeof(hashes)); hashes[7] |= 0x80; /* broadcast address */ udav_csr_write(sc, UDAV_MAR, hashes, sizeof(hashes)); /* now program new ones */ ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); while (enm != NULL) { if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN) != 0) goto allmulti; h = UDAV_CALCHASH(enm->enm_addrlo); hashes[h>>3] |= 1 << (h & 0x7); ETHER_NEXT_MULTI(step, enm); } /* disable all multicast */ ifp->if_flags &= ~IFF_ALLMULTI; UDAV_CLRBIT(sc, UDAV_RCR, UDAV_RCR_ALL); /* write hash value to the register */ udav_csr_write(sc, UDAV_MAR, hashes, sizeof(hashes)); } Static int udav_openpipes(struct udav_softc *sc) { usbd_status err; int error = 0; if (sc->sc_dying) return EIO; sc->sc_refcnt++; /* Open RX pipe */ err = usbd_open_pipe(sc->sc_ctl_iface, sc->sc_bulkin_no, USBD_EXCLUSIVE_USE, &sc->sc_pipe_rx); if (err) { printf("%s: open rx pipe failed: %s\n", device_xname(sc->sc_dev), usbd_errstr(err)); error = EIO; goto done; } /* Open TX pipe */ err = usbd_open_pipe(sc->sc_ctl_iface, sc->sc_bulkout_no, USBD_EXCLUSIVE_USE, &sc->sc_pipe_tx); if (err) { usbd_close_pipe(sc->sc_pipe_rx); printf("%s: open tx pipe failed: %s\n", device_xname(sc->sc_dev), usbd_errstr(err)); error = EIO; goto done; } #if 0 /* XXX: interrupt endpoint is not yet supported */ /* Open Interrupt pipe */ err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_intrin_no, USBD_EXCLUSIVE_USE, &sc->sc_pipe_intr, sc, &sc->sc_cdata.udav_ibuf, UDAV_INTR_PKGLEN, udav_intr, USBD_DEFAULT_INTERVAL); if (err) { printf("%s: open intr pipe failed: %s\n", device_xname(sc->sc_dev), usbd_errstr(err)); error = EIO; goto done; } #endif done: if (--sc->sc_refcnt < 0) usb_detach_wakeupold(sc->sc_dev); return error; } Static int udav_newbuf(struct udav_softc *sc, struct udav_chain *c, struct mbuf *m) { struct mbuf *m_new = NULL; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (m == NULL) { MGETHDR(m_new, M_DONTWAIT, MT_DATA); if (m_new == NULL) { printf("%s: no memory for rx list " "-- packet dropped!\n", device_xname(sc->sc_dev)); return ENOBUFS; } MCLGET(m_new, M_DONTWAIT); if (!(m_new->m_flags & M_EXT)) { printf("%s: no memory for rx list " "-- packet dropped!\n", device_xname(sc->sc_dev)); m_freem(m_new); return ENOBUFS; } m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; } else { m_new = m; m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; m_new->m_data = m_new->m_ext.ext_buf; } m_adj(m_new, ETHER_ALIGN); c->udav_mbuf = m_new; return 0; } Static int udav_rx_list_init(struct udav_softc *sc) { struct udav_cdata *cd; struct udav_chain *c; int i; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); cd = &sc->sc_cdata; for (i = 0; i < UDAV_RX_LIST_CNT; i++) { c = &cd->udav_rx_chain[i]; c->udav_sc = sc; c->udav_idx = i; if (udav_newbuf(sc, c, NULL) == ENOBUFS) return ENOBUFS; if (c->udav_xfer == NULL) { int error = usbd_create_xfer(sc->sc_pipe_rx, UDAV_BUFSZ, USBD_SHORT_XFER_OK, 0, &c->udav_xfer); if (error) return error; c->udav_buf = usbd_get_buffer(c->udav_xfer); } } return 0; } Static void udav_rx_list_free(struct udav_softc *sc) { for (int i = 0; i < UDAV_RX_LIST_CNT; i++) { if (sc->sc_cdata.udav_rx_chain[i].udav_mbuf != NULL) { m_freem(sc->sc_cdata.udav_rx_chain[i].udav_mbuf); sc->sc_cdata.udav_rx_chain[i].udav_mbuf = NULL; } if (sc->sc_cdata.udav_rx_chain[i].udav_xfer != NULL) { usbd_destroy_xfer(sc->sc_cdata.udav_rx_chain[i].udav_xfer); sc->sc_cdata.udav_rx_chain[i].udav_xfer = NULL; } } } Static int udav_tx_list_init(struct udav_softc *sc) { struct udav_cdata *cd; struct udav_chain *c; int i; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); cd = &sc->sc_cdata; for (i = 0; i < UDAV_TX_LIST_CNT; i++) { c = &cd->udav_tx_chain[i]; c->udav_sc = sc; c->udav_idx = i; c->udav_mbuf = NULL; if (c->udav_xfer == NULL) { int error = usbd_create_xfer(sc->sc_pipe_tx, UDAV_BUFSZ, USBD_FORCE_SHORT_XFER, 0, &c->udav_xfer); if (error) return error; c->udav_buf = usbd_get_buffer(c->udav_xfer); } } return 0; } Static void udav_tx_list_free(struct udav_softc *sc) { for (int i = 0; i < UDAV_TX_LIST_CNT; i++) { if (sc->sc_cdata.udav_tx_chain[i].udav_mbuf != NULL) { m_freem(sc->sc_cdata.udav_tx_chain[i].udav_mbuf); sc->sc_cdata.udav_tx_chain[i].udav_mbuf = NULL; } if (sc->sc_cdata.udav_tx_chain[i].udav_xfer != NULL) { usbd_destroy_xfer(sc->sc_cdata.udav_tx_chain[i].udav_xfer); sc->sc_cdata.udav_tx_chain[i].udav_xfer = NULL; } } } Static void udav_start(struct ifnet *ifp) { struct udav_softc * const sc = ifp->if_softc; mutex_enter(&sc->sc_txlock); udav_start_locked(ifp); mutex_exit(&sc->sc_txlock); } Static void udav_start_locked(struct ifnet *ifp) { struct udav_softc *sc = ifp->if_softc; struct mbuf *m_head = NULL; DPRINTF(("%s: %s: enter, link=%d\n", device_xname(sc->sc_dev), __func__, sc->sc_link)); if (sc->sc_dying) return; if (!sc->sc_link) return; if (ifp->if_flags & IFF_OACTIVE) return; IFQ_POLL(&ifp->if_snd, m_head); if (m_head == NULL) return; if (udav_send(sc, m_head, 0)) { return; } IFQ_DEQUEUE(&ifp->if_snd, m_head); bpf_mtap(ifp, m_head); ifp->if_flags |= IFF_OACTIVE; /* Set a timeout in case the chip goes out to lunch. */ ifp->if_timer = 5; } Static int udav_send(struct udav_softc *sc, struct mbuf *m, int idx) { int total_len; struct udav_chain *c; usbd_status err; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev),__func__)); c = &sc->sc_cdata.udav_tx_chain[idx]; /* Copy the mbuf data into a contiguous buffer */ /* first 2 bytes are packet length */ m_copydata(m, 0, m->m_pkthdr.len, c->udav_buf + 2); c->udav_mbuf = m; total_len = m->m_pkthdr.len; if (total_len < UDAV_MIN_FRAME_LEN) { memset(c->udav_buf + 2 + total_len, 0, UDAV_MIN_FRAME_LEN - total_len); total_len = UDAV_MIN_FRAME_LEN; } /* Frame length is specified in the first 2bytes of the buffer */ c->udav_buf[0] = (uint8_t)total_len; c->udav_buf[1] = (uint8_t)(total_len >> 8); total_len += 2; usbd_setup_xfer(c->udav_xfer, c, c->udav_buf, total_len, USBD_FORCE_SHORT_XFER, UDAV_TX_TIMEOUT, udav_txeof); /* Transmit */ sc->sc_refcnt++; err = usbd_transfer(c->udav_xfer); if (--sc->sc_refcnt < 0) usb_detach_wakeupold(sc->sc_dev); if (err != USBD_IN_PROGRESS) { printf("%s: udav_send error=%s\n", device_xname(sc->sc_dev), usbd_errstr(err)); /* Stop the interface */ usb_add_task(sc->sc_udev, &sc->sc_stop_task, USB_TASKQ_DRIVER); return EIO; } DPRINTF(("%s: %s: send %d bytes\n", device_xname(sc->sc_dev), __func__, total_len)); sc->sc_cdata.udav_tx_cnt++; return 0; } Static void udav_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) { struct udav_chain *c = priv; struct udav_softc *sc = c->udav_sc; struct ifnet *ifp = GET_IFP(sc); int s; if (sc->sc_dying) return; s = splnet(); DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); ifp->if_timer = 0; ifp->if_flags &= ~IFF_OACTIVE; if (status != USBD_NORMAL_COMPLETION) { if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { splx(s); return; } ifp->if_oerrors++; printf("%s: usb error on tx: %s\n", device_xname(sc->sc_dev), usbd_errstr(status)); if (status == USBD_STALLED) { sc->sc_refcnt++; usbd_clear_endpoint_stall_async(sc->sc_pipe_tx); if (--sc->sc_refcnt < 0) usb_detach_wakeupold(sc->sc_dev); } splx(s); return; } ifp->if_opackets++; m_freem(c->udav_mbuf); c->udav_mbuf = NULL; if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) udav_start(ifp); splx(s); } Static void udav_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) { struct udav_chain *c = priv; struct udav_softc *sc = c->udav_sc; struct ifnet *ifp = GET_IFP(sc); struct mbuf *m; uint32_t total_len; uint8_t *pktstat; int s; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev),__func__)); if (sc->sc_dying) return; if (status != USBD_NORMAL_COMPLETION) { if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) return; sc->sc_rx_errs++; if (usbd_ratecheck(&sc->sc_rx_notice)) { printf("%s: %u usb errors on rx: %s\n", device_xname(sc->sc_dev), sc->sc_rx_errs, usbd_errstr(status)); sc->sc_rx_errs = 0; } if (status == USBD_STALLED) { sc->sc_refcnt++; usbd_clear_endpoint_stall_async(sc->sc_pipe_rx); if (--sc->sc_refcnt < 0) usb_detach_wakeupold(sc->sc_dev); } goto done; } usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); /* copy data to mbuf */ m = c->udav_mbuf; memcpy(mtod(m, char *), c->udav_buf, total_len); /* first byte in received data */ pktstat = mtod(m, uint8_t *); m_adj(m, sizeof(uint8_t)); DPRINTF(("%s: RX Status: 0x%02x\n", device_xname(sc->sc_dev), *pktstat)); total_len = UGETW(mtod(m, uint8_t *)); m_adj(m, sizeof(uint16_t)); if (*pktstat & UDAV_RSR_LCS) { ifp->if_collisions++; goto done; } if (total_len < sizeof(struct ether_header) || *pktstat & UDAV_RSR_ERR) { ifp->if_ierrors++; goto done; } ifp->if_ipackets++; total_len -= ETHER_CRC_LEN; m->m_pkthdr.len = m->m_len = total_len; m->m_pkthdr.rcvif = ifp; s = splnet(); if (udav_newbuf(sc, c, NULL) == ENOBUFS) { ifp->if_ierrors++; goto done1; } bpf_mtap(ifp, m); DPRINTF(("%s: %s: deliver %d\n", device_xname(sc->sc_dev), __func__, m->m_len)); (*(ifp)->if_input)((ifp), (m)); done1: splx(s); done: /* Setup new transfer */ usbd_setup_xfer(xfer, c, c->udav_buf, UDAV_BUFSZ, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, udav_rxeof); sc->sc_refcnt++; usbd_transfer(xfer); if (--sc->sc_refcnt < 0) usb_detach_wakeupold(sc->sc_dev); DPRINTF(("%s: %s: start rx\n", device_xname(sc->sc_dev), __func__)); } #if 0 Static void udav_intr(void) { } #endif Static int udav_ioctl(struct ifnet *ifp, u_long cmd, void *data) { struct udav_softc *sc = ifp->if_softc; int s, error = 0; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return EIO; s = splnet(); error = ether_ioctl(ifp, cmd, data); if (error == ENETRESET) { if (ifp->if_flags & IFF_RUNNING) udav_setmulti(sc); error = 0; } splx(s); return error; } Static void udav_watchdog(struct ifnet *ifp) { struct udav_softc *sc = ifp->if_softc; struct udav_chain *c; usbd_status stat; int s; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); ifp->if_oerrors++; printf("%s: watchdog timeout\n", device_xname(sc->sc_dev)); s = splusb(); c = &sc->sc_cdata.udav_tx_chain[0]; usbd_get_xfer_status(c->udav_xfer, NULL, NULL, NULL, &stat); udav_txeof(c->udav_xfer, c, stat); if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) udav_start(ifp); splx(s); } Static void udav_stop_task(struct udav_softc *sc) { udav_stop(GET_IFP(sc), 1); } Static void udav_stop(struct ifnet *ifp, int disable) { struct udav_softc * const sc = ifp->if_softc; mutex_enter(&sc->sc_lock); udav_stop_locked(ifp, disable); mutex_exit(&sc->sc_lock); } /* Stop the adapter and free any mbufs allocated to the RX and TX lists. */ Static void udav_stop_locked(struct ifnet *ifp, int disable) { struct udav_softc *sc = ifp->if_softc; usbd_status err; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); ifp->if_timer = 0; // udav_reset(sc); callout_stop(&sc->sc_stat_ch); /* Stop transfers */ /* RX endpoint */ if (sc->sc_pipe_rx != NULL) { err = usbd_abort_pipe(sc->sc_pipe_rx); if (err) printf("%s: abort rx pipe failed: %s\n", device_xname(sc->sc_dev), usbd_errstr(err)); } /* TX endpoint */ if (sc->sc_pipe_tx != NULL) { err = usbd_abort_pipe(sc->sc_pipe_tx); if (err) printf("%s: abort tx pipe failed: %s\n", device_xname(sc->sc_dev), usbd_errstr(err)); } #if 0 /* XXX: Interrupt endpoint is not yet supported!! */ /* Interrupt endpoint */ if (sc->sc_pipe_intr != NULL) { err = usbd_abort_pipe(sc->sc_pipe_intr); if (err) printf("%s: abort intr pipe failed: %s\n", device_xname(sc->sc_dev), usbd_errstr(err)); err = usbd_close_pipe(sc->sc_pipe_intr); if (err) printf("%s: close intr pipe failed: %s\n", device_xname(sc->sc_dev), usbd_errstr(err)); sc->sc_pipe_intr = NULL; } #endif udav_rx_list_free(sc); udav_tx_list_free(sc); /* Close pipes */ /* RX endpoint */ if (sc->sc_pipe_rx != NULL) { err = usbd_close_pipe(sc->sc_pipe_rx); if (err) printf("%s: close rx pipe failed: %s\n", device_xname(sc->sc_dev), usbd_errstr(err)); sc->sc_pipe_rx = NULL; } /* TX endpoint */ if (sc->sc_pipe_tx != NULL) { err = usbd_close_pipe(sc->sc_pipe_tx); if (err) printf("%s: close tx pipe failed: %s\n", device_xname(sc->sc_dev), usbd_errstr(err)); sc->sc_pipe_tx = NULL; } if (!ISSET(sc->sc_flags, UDAV_NO_PHY)) sc->sc_link = 0; ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); } /* Set media options */ Static int udav_ifmedia_change(struct ifnet *ifp) { struct udav_softc *sc = ifp->if_softc; struct mii_data *mii = GET_MII(sc); int rc; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return 0; sc->sc_link = 0; if ((rc = mii_mediachg(mii)) == ENXIO) return 0; return rc; } /* Report current media status. */ Static void udav_ifmedia_status(struct ifnet *ifp, struct ifmediareq *ifmr) { struct udav_softc *sc = ifp->if_softc; DPRINTF(("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return; ether_mediastatus(ifp, ifmr); } Static void udav_tick(void *xsc) { struct udav_softc *sc = xsc; if (sc == NULL) return; DPRINTFN(0xff, ("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return; /* Perform periodic stuff in process context */ usb_add_task(sc->sc_udev, &sc->sc_tick_task, USB_TASKQ_DRIVER); } Static void udav_tick_task(void *xsc) { struct udav_softc *sc = xsc; struct ifnet *ifp; struct mii_data *mii; int s; if (sc == NULL) return; DPRINTFN(0xff, ("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); if (sc->sc_dying) return; ifp = GET_IFP(sc); mii = GET_MII(sc); if (mii == NULL) return; s = splnet(); mii_tick(mii); if (!sc->sc_link) { mii_pollstat(mii); if (mii->mii_media_status & IFM_ACTIVE && IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { DPRINTF(("%s: %s: got link\n", device_xname(sc->sc_dev), __func__)); sc->sc_link++; if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) udav_start(ifp); } } callout_reset(&sc->sc_stat_ch, hz, udav_tick, sc); splx(s); } /* Get exclusive access to the MII registers */ Static void udav_lock_mii(struct udav_softc *sc) { DPRINTFN(0xff, ("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); sc->sc_refcnt++; mutex_enter(&sc->sc_mii_lock); } Static void udav_unlock_mii(struct udav_softc *sc) { DPRINTFN(0xff, ("%s: %s: enter\n", device_xname(sc->sc_dev), __func__)); mutex_exit(&sc->sc_mii_lock); if (--sc->sc_refcnt < 0) usb_detach_wakeupold(sc->sc_dev); } Static int udav_miibus_readreg(device_t dev, int phy, int reg) { struct udav_softc *sc; uint8_t val[2]; uint16_t data16; if (dev == NULL) return 0; sc = device_private(dev); DPRINTFN(0xff, ("%s: %s: enter, phy=%d reg=0x%04x\n", device_xname(sc->sc_dev), __func__, phy, reg)); if (sc->sc_dying) { #ifdef DIAGNOSTIC printf("%s: %s: dying\n", device_xname(sc->sc_dev), __func__); #endif return 0; } /* XXX: one PHY only for the internal PHY */ if (phy != 0) { DPRINTFN(0xff, ("%s: %s: phy=%d is not supported\n", device_xname(sc->sc_dev), __func__, phy)); return 0; } udav_lock_mii(sc); /* select internal PHY and set PHY register address */ udav_csr_write1(sc, UDAV_EPAR, UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK)); /* select PHY operation and start read command */ udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRR); /* XXX: should be wait? */ /* end read command */ UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRR); /* retrieve the result from data registers */ udav_csr_read(sc, UDAV_EPDRL, val, 2); udav_unlock_mii(sc); data16 = val[0] | (val[1] << 8); DPRINTFN(0xff, ("%s: %s: phy=%d reg=0x%04x => 0x%04x\n", device_xname(sc->sc_dev), __func__, phy, reg, data16)); return data16; } Static void udav_miibus_writereg(device_t dev, int phy, int reg, int data) { struct udav_softc *sc; uint8_t val[2]; if (dev == NULL) return; sc = device_private(dev); DPRINTFN(0xff, ("%s: %s: enter, phy=%d reg=0x%04x data=0x%04x\n", device_xname(sc->sc_dev), __func__, phy, reg, data)); if (sc->sc_dying) { #ifdef DIAGNOSTIC printf("%s: %s: dying\n", device_xname(sc->sc_dev), __func__); #endif return; } /* XXX: one PHY only for the internal PHY */ if (phy != 0) { DPRINTFN(0xff, ("%s: %s: phy=%d is not supported\n", device_xname(sc->sc_dev), __func__, phy)); return; } udav_lock_mii(sc); /* select internal PHY and set PHY register address */ udav_csr_write1(sc, UDAV_EPAR, UDAV_EPAR_PHY_ADR0 | (reg & UDAV_EPAR_EROA_MASK)); /* put the value to the data registers */ val[0] = data & 0xff; val[1] = (data >> 8) & 0xff; udav_csr_write(sc, UDAV_EPDRL, val, 2); /* select PHY operation and start write command */ udav_csr_write1(sc, UDAV_EPCR, UDAV_EPCR_EPOS | UDAV_EPCR_ERPRW); /* XXX: should be wait? */ /* end write command */ UDAV_CLRBIT(sc, UDAV_EPCR, UDAV_EPCR_ERPRW); udav_unlock_mii(sc); return; } Static void udav_miibus_statchg(struct ifnet *ifp) { #ifdef UDAV_DEBUG if (ifp == NULL) return; DPRINTF(("%s: %s: enter\n", ifp->if_xname, __func__)); #endif /* Nothing to do */ }