/* $OpenBSD: if_axen.c,v 1.8 2014/07/13 15:52:49 mpi Exp $ */ /* * Copyright (c) 2013 Yojiro UO * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* * ASIX Electronics AX88178a USB 2.0 ethernet and AX88179 USB 3.0 Ethernet * driver. */ #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #include #if NBPFILTER > 0 #include #endif #include #include #include #include #include #include #include #include #include #include #ifdef AXEN_DEBUG #define DPRINTF(x) do { if (axendebug) printf x; } while (0) #define DPRINTFN(n,x) do { if (axendebug >= (n)) printf x; } while (0) int axendebug = 0; #else #define DPRINTF(x) #define DPRINTFN(n,x) #endif #define AXEN_TOE /* enable checksum offload function */ /* * Various supported device vendors/products. */ const struct axen_type axen_devs[] = { #if 0 /* not tested */ { { USB_VENDOR_ASIX, USB_PRODUCT_ASIX_AX88178A}, AX178A }, #endif { { USB_VENDOR_ASIX, USB_PRODUCT_ASIX_AX88179}, AX179 }, { { USB_VENDOR_DLINK, USB_PRODUCT_DLINK_DUB1312}, AX179 }, { { USB_VENDOR_LENOVO, USB_PRODUCT_LENOVO_AX88179}, AX179 }, { { USB_VENDOR_SAMSUNG2, USB_PRODUCT_SAMSUNG2_AX88179}, AX179 }, { { USB_VENDOR_SITECOMEU, USB_PRODUCT_SITECOMEU_LN032}, AX179 } }; #define axen_lookup(v, p) ((struct axen_type *)usb_lookup(axen_devs, v, p)) int axen_match(struct device *, void *, void *); void axen_attach(struct device *, struct device *, void *); int axen_detach(struct device *, int); struct cfdriver axen_cd = { NULL, "axen", DV_IFNET }; const struct cfattach axen_ca = { sizeof(struct axen_softc), axen_match, axen_attach, axen_detach }; int axen_tx_list_init(struct axen_softc *); int axen_rx_list_init(struct axen_softc *); struct mbuf *axen_newbuf(void); int axen_encap(struct axen_softc *, struct mbuf *, int); void axen_rxeof(struct usbd_xfer *, void *, usbd_status); void axen_txeof(struct usbd_xfer *, void *, usbd_status); void axen_tick(void *); void axen_tick_task(void *); void axen_start(struct ifnet *); int axen_ioctl(struct ifnet *, u_long, caddr_t); void axen_init(void *); void axen_stop(struct axen_softc *); void axen_watchdog(struct ifnet *); int axen_miibus_readreg(struct device *, int, int); void axen_miibus_writereg(struct device *, int, int, int); void axen_miibus_statchg(struct device *); int axen_cmd(struct axen_softc *, int, int, int, void *); int axen_ifmedia_upd(struct ifnet *); void axen_ifmedia_sts(struct ifnet *, struct ifmediareq *); void axen_reset(struct axen_softc *sc); #if 0 /* not used */ int axen_ax88179_eeprom(struct axen_softc *, void *); #endif void axen_iff(struct axen_softc *); void axen_lock_mii(struct axen_softc *sc); void axen_unlock_mii(struct axen_softc *sc); void axen_ax88179_init(struct axen_softc *); /* Get exclusive access to the MII registers */ void axen_lock_mii(struct axen_softc *sc) { sc->axen_refcnt++; rw_enter_write(&sc->axen_mii_lock); } void axen_unlock_mii(struct axen_softc *sc) { rw_exit_write(&sc->axen_mii_lock); if (--sc->axen_refcnt < 0) usb_detach_wakeup(&sc->axen_dev); } int axen_cmd(struct axen_softc *sc, int cmd, int index, int val, void *buf) { usb_device_request_t req; usbd_status err; if (usbd_is_dying(sc->axen_udev)) return 0; if (AXEN_CMD_DIR(cmd)) req.bmRequestType = UT_WRITE_VENDOR_DEVICE; else req.bmRequestType = UT_READ_VENDOR_DEVICE; req.bRequest = AXEN_CMD_CMD(cmd); USETW(req.wValue, val); USETW(req.wIndex, index); USETW(req.wLength, AXEN_CMD_LEN(cmd)); err = usbd_do_request(sc->axen_udev, &req, buf); DPRINTFN(5, ("axen_cmd: cmd 0x%04x val 0x%04x len %d\n", cmd, val, AXEN_CMD_LEN(cmd))); if (err) { DPRINTF(("axen_cmd err: cmd: %d, error: %d\n", cmd, err)); return -1; } return 0; } int axen_miibus_readreg(struct device *dev, int phy, int reg) { struct axen_softc *sc = (void *)dev; usbd_status err; uWord val; int ival; if (usbd_is_dying(sc->axen_udev)) { DPRINTF(("axen: dying\n")); return 0; } if (sc->axen_phyno != phy) return 0; axen_lock_mii(sc); err = axen_cmd(sc, AXEN_CMD_MII_READ_REG, reg, phy, &val); axen_unlock_mii(sc); if (err) { printf("axen%d: read PHY failed\n", sc->axen_unit); return -1; } ival = UGETW(val); DPRINTFN(2,("axen_miibus_readreg: phy 0x%x reg 0x%x val 0x%x\n", phy, reg, ival)); if (reg == MII_BMSR) { ival &= ~BMSR_EXTCAP; } return ival; } void axen_miibus_writereg(struct device *dev, int phy, int reg, int val) { struct axen_softc *sc = (void *)dev; usbd_status err; uWord uval; if (usbd_is_dying(sc->axen_udev)) return; if (sc->axen_phyno != phy) return; USETW(uval, val); axen_lock_mii(sc); err = axen_cmd(sc, AXEN_CMD_MII_WRITE_REG, reg, phy, &uval); axen_unlock_mii(sc); DPRINTFN(2, ("axen_miibus_writereg: phy 0x%x reg 0x%x val 0x%0x\n", phy, reg, val)); if (err) { printf("axen%d: write PHY failed\n", sc->axen_unit); return; } } void axen_miibus_statchg(struct device *dev) { struct axen_softc *sc = (void *)dev; struct mii_data *mii = GET_MII(sc); struct ifnet *ifp; int err; uint16_t val; uWord wval; ifp = GET_IFP(sc); if (mii == NULL || ifp == NULL || (ifp->if_flags & IFF_RUNNING) == 0) return; sc->axen_link = 0; if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == (IFM_ACTIVE | IFM_AVALID)) { switch (IFM_SUBTYPE(mii->mii_media_active)) { case IFM_10_T: case IFM_100_TX: sc->axen_link++; break; case IFM_1000_T: sc->axen_link++; break; default: break; } } /* Lost link, do nothing. */ if (sc->axen_link == 0) return; val = 0; if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) val |= AXEN_MEDIUM_FDX; val |= (AXEN_MEDIUM_RECV_EN | AXEN_MEDIUM_ALWAYS_ONE); val |= (AXEN_MEDIUM_RXFLOW_CTRL_EN | AXEN_MEDIUM_TXFLOW_CTRL_EN); switch (IFM_SUBTYPE(mii->mii_media_active)) { case IFM_1000_T: val |= AXEN_MEDIUM_GIGA | AXEN_MEDIUM_EN_125MHZ; break; case IFM_100_TX: val |= AXEN_MEDIUM_PS; break; case IFM_10_T: /* doesn't need to be handled */ break; } DPRINTF(("axen_miibus_statchg: val=0x%x\n", val)); USETW(wval, val); axen_lock_mii(sc); err = axen_cmd(sc, AXEN_CMD_MAC_WRITE2, 2, AXEN_MEDIUM_STATUS, &wval); axen_unlock_mii(sc); if (err) { printf("%s: media change failed\n", sc->axen_dev.dv_xname); return; } } /* * Set media options. */ int axen_ifmedia_upd(struct ifnet *ifp) { struct axen_softc *sc = ifp->if_softc; struct mii_data *mii = GET_MII(sc); int err; sc->axen_link = 0; if (mii->mii_instance) { struct mii_softc *miisc; LIST_FOREACH(miisc, &mii->mii_phys, mii_list) mii_phy_reset(miisc); } err = mii_mediachg(mii); if (err == ENXIO) return 0; else return err; } /* * Report current media status. */ void axen_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) { struct axen_softc *sc = ifp->if_softc; struct mii_data *mii = GET_MII(sc); mii_pollstat(mii); ifmr->ifm_active = mii->mii_media_active; ifmr->ifm_status = mii->mii_media_status; } void axen_iff(struct axen_softc *sc) { struct ifnet *ifp = GET_IFP(sc); struct arpcom *ac = &sc->arpcom; struct ether_multi *enm; struct ether_multistep step; u_int32_t h = 0; u_int16_t rxmode; u_int8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; uWord wval; if (usbd_is_dying(sc->axen_udev)) return; rxmode = 0; /* Enable receiver, set RX mode */ axen_lock_mii(sc); axen_cmd(sc, AXEN_CMD_MAC_READ2, 2, AXEN_MAC_RXCTL, &wval); rxmode = UGETW(wval); rxmode &= ~(AXEN_RXCTL_ACPT_ALL_MCAST | AXEN_RXCTL_ACPT_PHY_MCAST | AXEN_RXCTL_PROMISC); ifp->if_flags &= ~IFF_ALLMULTI; /* * Always accept broadcast frames. * Always accept frames destined to our station address. */ rxmode |= AXEN_RXCTL_ACPT_BCAST; if (ifp->if_flags & IFF_PROMISC || ac->ac_multirangecnt > 0) { ifp->if_flags |= IFF_ALLMULTI; rxmode |= AXEN_RXCTL_ACPT_ALL_MCAST | AXEN_RXCTL_ACPT_PHY_MCAST; if (ifp->if_flags & IFF_PROMISC) rxmode |= AXEN_RXCTL_PROMISC; } else { rxmode |= AXEN_RXCTL_ACPT_ALL_MCAST | AXEN_RXCTL_ACPT_PHY_MCAST; /* now program new ones */ ETHER_FIRST_MULTI(step, ac, enm); while (enm != NULL) { h = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN) >> 26; hashtbl[h / 8] |= 1 << (h % 8); ETHER_NEXT_MULTI(step, enm); } } axen_cmd(sc, AXEN_CMD_MAC_WRITE_FILTER, 8, AXEN_FILTER_MULTI, (void *)&hashtbl); USETW(wval, rxmode); axen_cmd(sc, AXEN_CMD_MAC_WRITE2, 2, AXEN_MAC_RXCTL, &wval); axen_unlock_mii(sc); } void axen_reset(struct axen_softc *sc) { if (usbd_is_dying(sc->axen_udev)) return; /* XXX What to reset? */ /* Wait a little while for the chip to get its brains in order. */ DELAY(1000); return; } #if 0 /* not used */ #define AXEN_GPIO_WRITE(x,y) do { \ axen_cmd(sc, AXEN_CMD_WRITE_GPIO, 0, (x), NULL); \ usbd_delay_ms(sc->axen_udev, (y)); \ } while (0) int axen_ax88179_eeprom(struct axen_softc *sc, void *addr) { int i, retry; uWord buf; uint8_t eeprom[20]; uint16_t csum; for (i = 0; i < 6; i++) { /* set eeprom address */ USETW(buf, i); axen_cmd(sc, AXEN_CMD_MAC_WRITE, 1, AXEN_MAC_EEPROM_ADDR, buf); /* set eeprom command */ USETW(buf, AXEN_EEPROM_READ); axen_cmd(sc, AXEN_CMD_MAC_WRITE, 1, AXEN_MAC_EEPROM_CMD, buf); /* check the value is ready */ retry = 3; do { USETW(buf, AXEN_EEPROM_READ); usbd_delay_ms(sc->axen_udev, 10); axen_cmd(sc, AXEN_CMD_MAC_READ, 1, AXEN_MAC_EEPROM_CMD, buf); retry--; if (retry < 0) return EINVAL; } while ((UGETW(buf) & 0xff) & AXEN_EEPROM_BUSY); /* read data */ axen_cmd(sc, AXEN_CMD_MAC_READ2, 2, AXEN_EEPROM_READ, &eeprom[i * 2]); /* sanity check */ if ((i == 0) && (eeprom[0] == 0xff)) return EINVAL; } /* check checksum */ csum = eeprom[6] + eeprom[7] + eeprom[8] + eeprom[9]; csum = (csum >> 8) + (csum & 0xff) + eeprom[10]; if (csum != 0xff) { printf("eeprom checksum mismatchi(0x%02x)\n", csum); return EINVAL; } memcpy(addr, eeprom, ETHER_ADDR_LEN); return 0; } #endif void axen_ax88179_init(struct axen_softc *sc) { uWord wval; uByte val; u_int16_t ctl, temp; struct axen_qctrl qctrl; axen_lock_mii(sc); /* XXX: ? */ axen_cmd(sc, AXEN_CMD_MAC_READ, 1, AXEN_UNK_05, &val); DPRINTFN(5, ("AXEN_CMD_MAC_READ(0x05): 0x%02x\n", val)); /* check AX88179 version, UA1 / UA2 */ axen_cmd(sc, AXEN_CMD_MAC_READ, 1, AXEN_GENERAL_STATUS, &val); /* UA1 */ if (!(val & AXEN_GENERAL_STATUS_MASK)) { sc->axen_rev = AXEN_REV_UA1; DPRINTF(("AX88179 ver. UA1\n")); } else { sc->axen_rev = AXEN_REV_UA2; DPRINTF(("AX88179 ver. UA2\n")); } /* power up ethernet PHY */ USETW(wval, 0); axen_cmd(sc, AXEN_CMD_MAC_WRITE2, 2, AXEN_PHYPWR_RSTCTL, &wval); USETW(wval, AXEN_PHYPWR_RSTCTL_IPRL); axen_cmd(sc, AXEN_CMD_MAC_WRITE2, 2, AXEN_PHYPWR_RSTCTL, &wval); usbd_delay_ms(sc->axen_udev, 200); /* set clock mode */ val = AXEN_PHYCLK_ACS | AXEN_PHYCLK_BCS; axen_cmd(sc, AXEN_CMD_MAC_WRITE, 1, AXEN_PHYCLK, &val); usbd_delay_ms(sc->axen_udev, 100); /* set monitor mode (disable) */ val = AXEN_MONITOR_NONE; axen_cmd(sc, AXEN_CMD_MAC_WRITE, 1, AXEN_MONITOR_MODE, &val); /* enable auto detach */ axen_cmd(sc, AXEN_CMD_EEPROM_READ, 2, AXEN_EEPROM_STAT, &wval); temp = UGETW(wval); DPRINTFN(2,("EEPROM0x43 = 0x%04x\n", temp)); if (!(temp == 0xffff) && !(temp & 0x0100)) { /* Enable auto detach bit */ val = 0; axen_cmd(sc, AXEN_CMD_MAC_WRITE, 1, AXEN_PHYCLK, &val); val = AXEN_PHYCLK_ULR; axen_cmd(sc, AXEN_CMD_MAC_WRITE, 1, AXEN_PHYCLK, &val); usbd_delay_ms(sc->axen_udev, 100); axen_cmd(sc, AXEN_CMD_MAC_READ2, 2, AXEN_PHYPWR_RSTCTL, &wval); ctl = UGETW(wval); ctl |= AXEN_PHYPWR_RSTCTL_AUTODETACH; USETW(wval, ctl); axen_cmd(sc, AXEN_CMD_MAC_WRITE2, 2, AXEN_PHYPWR_RSTCTL, &wval); usbd_delay_ms(sc->axen_udev, 200); printf("enable auto detach (0x%04x)\n", ctl); } /* bulkin queue setting */ axen_cmd(sc, AXEN_CMD_MAC_READ, 1, AXEN_USB_UPLINK, &val); switch (val) { case AXEN_USB_FS: DPRINTF(("uplink: USB1.1\n")); qctrl.ctrl = 0x07; qctrl.timer_low = 0xcc; qctrl.timer_high= 0x4c; qctrl.bufsize = AXEN_BUFSZ_LS - 1; qctrl.ifg = 0x08; break; case AXEN_USB_HS: DPRINTF(("uplink: USB2.0\n")); qctrl.ctrl = 0x07; qctrl.timer_low = 0x02; qctrl.timer_high= 0xa0; qctrl.bufsize = AXEN_BUFSZ_HS - 1; qctrl.ifg = 0xff; break; case AXEN_USB_SS: DPRINTF(("uplink: USB3.0\n")); qctrl.ctrl = 0x07; qctrl.timer_low = 0x4f; qctrl.timer_high= 0x00; qctrl.bufsize = AXEN_BUFSZ_SS - 1; qctrl.ifg = 0xff; break; default: printf("unknown uplink bus:0x%02x\n", val); axen_unlock_mii(sc); return; } axen_cmd(sc, AXEN_CMD_MAC_SET_RXSR, 5, AXEN_RX_BULKIN_QCTRL, &qctrl); /* * set buffer high/low watermark to pause/resume. * write 2byte will set high/log simultaneous with AXEN_PAUSE_HIGH. * XXX: what is the best value? OSX driver uses 0x3c-0x4c as LOW-HIGH * watermark parameters. */ val = 0x34; axen_cmd(sc, AXEN_CMD_MAC_WRITE, 1, AXEN_PAUSE_LOW_WATERMARK, &val); val = 0x52; axen_cmd(sc, AXEN_CMD_MAC_WRITE, 1, AXEN_PAUSE_HIGH_WATERMARK, &val); /* Set RX/TX configuration. */ /* Offloadng enable */ #ifdef AXEN_TOE val = AXEN_RXCOE_IPv4 | AXEN_RXCOE_TCPv4 | AXEN_RXCOE_UDPv4 | AXEN_RXCOE_TCPv6 | AXEN_RXCOE_UDPv6; #else val = AXEN_RXCOE_OFF; #endif axen_cmd(sc, AXEN_CMD_MAC_WRITE, 1, AXEN_RX_COE, &val); #ifdef AXEN_TOE val = AXEN_TXCOE_IPv4 | AXEN_TXCOE_TCPv4 | AXEN_TXCOE_UDPv4 | AXEN_TXCOE_TCPv6 | AXEN_TXCOE_UDPv6; #else val = AXEN_TXCOE_OFF; #endif axen_cmd(sc, AXEN_CMD_MAC_WRITE, 1, AXEN_TX_COE, &val); /* Set RX control register */ ctl = AXEN_RXCTL_IPE | AXEN_RXCTL_DROPCRCERR | AXEN_RXCTL_AUTOB; ctl |= AXEN_RXCTL_ACPT_PHY_MCAST | AXEN_RXCTL_ACPT_ALL_MCAST; ctl |= AXEN_RXCTL_START; USETW(wval, ctl); axen_cmd(sc, AXEN_CMD_MAC_WRITE2, 2, AXEN_MAC_RXCTL, &wval); /* set monitor mode (enable) */ val = AXEN_MONITOR_PMETYPE | AXEN_MONITOR_PMEPOL | AXEN_MONITOR_RWMP; axen_cmd(sc, AXEN_CMD_MAC_WRITE, 1, AXEN_MONITOR_MODE, &val); axen_cmd(sc, AXEN_CMD_MAC_READ, 1, AXEN_MONITOR_MODE, &val); DPRINTF(("axen: Monitor mode = 0x%02x\n", val)); /* set medium type */ ctl = AXEN_MEDIUM_GIGA | AXEN_MEDIUM_FDX | AXEN_MEDIUM_ALWAYS_ONE | AXEN_MEDIUM_RXFLOW_CTRL_EN | AXEN_MEDIUM_TXFLOW_CTRL_EN; ctl |= AXEN_MEDIUM_RECV_EN; USETW(wval, ctl); DPRINTF(("axen: set to medium mode: 0x%04x\n", UGETW(wval))); axen_cmd(sc, AXEN_CMD_MAC_WRITE2, 2, AXEN_MEDIUM_STATUS, &wval); usbd_delay_ms(sc->axen_udev, 100); axen_cmd(sc, AXEN_CMD_MAC_READ2, 2, AXEN_MEDIUM_STATUS, &wval); DPRINTF(("axen: current medium mode: 0x%04x\n", UGETW(wval))); axen_unlock_mii(sc); #if 0 /* XXX: TBD.... */ #define GMII_LED_ACTIVE 0x1a #define GMII_PHY_PAGE_SEL 0x1e #define GMII_PHY_PAGE_SEL 0x1f #define GMII_PAGE_EXT 0x0007 axen_miibus_writereg(&sc->axen_dev, sc->axen_phyno, GMII_PHY_PAGE_SEL, GMII_PAGE_EXT); axen_miibus_writereg(&sc->axen_dev, sc->axen_phyno, GMII_PHY_PAGE, 0x002c); #endif #if 1 /* XXX: phy hack ? */ axen_miibus_writereg(&sc->axen_dev, sc->axen_phyno, 0x1F, 0x0005); axen_miibus_writereg(&sc->axen_dev, sc->axen_phyno, 0x0C, 0x0000); val = axen_miibus_readreg(&sc->axen_dev, sc->axen_phyno, 0x0001); axen_miibus_writereg(&sc->axen_dev, sc->axen_phyno, 0x01, val | 0x0080); axen_miibus_writereg(&sc->axen_dev, sc->axen_phyno, 0x1F, 0x0000); #endif } int axen_match(struct device *parent, void *match, void *aux) { struct usb_attach_arg *uaa = aux; if (!uaa->iface) return UMATCH_NONE; return (axen_lookup(uaa->vendor, uaa->product) != NULL ? UMATCH_VENDOR_PRODUCT : UMATCH_NONE); } void axen_attach(struct device *parent, struct device *self, void *aux) { struct axen_softc *sc = (struct axen_softc *)self; struct usb_attach_arg *uaa = aux; struct usbd_device *dev = uaa->device; usbd_status err; usb_interface_descriptor_t *id; usb_endpoint_descriptor_t *ed; struct mii_data *mii; u_char eaddr[ETHER_ADDR_LEN]; char *devname = sc->axen_dev.dv_xname; struct ifnet *ifp; int i, s; sc->axen_unit = self->dv_unit; /*device_get_unit(self);*/ sc->axen_udev = dev; err = usbd_set_config_no(dev, AXEN_CONFIG_NO, 1); if (err) { printf("%s: getting interface handle failed\n", sc->axen_dev.dv_xname); return; } sc->axen_flags = axen_lookup(uaa->vendor, uaa->product)->axen_flags; usb_init_task(&sc->axen_tick_task, axen_tick_task, sc, USB_TASK_TYPE_GENERIC); rw_init(&sc->axen_mii_lock, "axenmii"); usb_init_task(&sc->axen_stop_task, (void (*)(void *))axen_stop, sc, USB_TASK_TYPE_GENERIC); err = usbd_device2interface_handle(dev, AXEN_IFACE_IDX, &sc->axen_iface); if (err) { printf("%s: getting interface handle failed\n", sc->axen_dev.dv_xname); return; } sc->axen_product = uaa->product; sc->axen_vendor = uaa->vendor; id = usbd_get_interface_descriptor(sc->axen_iface); /* XXX fix when USB3.0 HC is supported */ /* decide on what our bufsize will be */ sc->axen_bufsz = (sc->axen_udev->speed == USB_SPEED_HIGH) ? AXEN_BUFSZ_HS * 1024 : AXEN_BUFSZ_LS * 1024; /* Find endpoints. */ for (i = 0; i < id->bNumEndpoints; i++) { ed = usbd_interface2endpoint_descriptor(sc->axen_iface, i); if (!ed) { printf("%s: couldn't get ep %d\n", sc->axen_dev.dv_xname, i); return; } if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { sc->axen_ed[AXEN_ENDPT_RX] = ed->bEndpointAddress; } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { sc->axen_ed[AXEN_ENDPT_TX] = ed->bEndpointAddress; } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { sc->axen_ed[AXEN_ENDPT_INTR] = ed->bEndpointAddress; } } s = splnet(); sc->axen_phyno = AXEN_PHY_ID; DPRINTF((" get_phyno %d\n", sc->axen_phyno)); /* * Get station address. */ #if 0 /* read from eeprom */ if (axen_ax88179_eeprom(sc, &eaddr)) { printf("EEPROM checksum error\n"); return; } #else /* use MAC command */ axen_lock_mii(sc); axen_cmd(sc, AXEN_CMD_MAC_READ_ETHER, 6, AXEN_CMD_MAC_NODE_ID, &eaddr); axen_unlock_mii(sc); #endif axen_ax88179_init(sc); /* * An ASIX chip was detected. Inform the world. */ printf("%s:", sc->axen_dev.dv_xname); if (sc->axen_flags & AX178A) printf(" AX88178a"); else if (sc->axen_flags & AX179) printf(" AX88179"); printf(", address %s\n", ether_sprintf(eaddr)); bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); /* Initialize interface info. */ ifp = &sc->arpcom.ac_if; ifp->if_softc = sc; strlcpy(ifp->if_xname, devname, IFNAMSIZ); ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = axen_ioctl; ifp->if_start = axen_start; ifp->if_watchdog = axen_watchdog; IFQ_SET_READY(&ifp->if_snd); ifp->if_capabilities = IFCAP_VLAN_MTU; #ifdef AXEN_TOE ifp->if_capabilities |= IFCAP_CSUM_IPv4 | IFCAP_CSUM_TCPv4 | IFCAP_CSUM_UDPv4 | IFCAP_CSUM_TCPv6 | IFCAP_CSUM_UDPv6; #endif /* Initialize MII/media info. */ mii = &sc->axen_mii; mii->mii_ifp = ifp; mii->mii_readreg = axen_miibus_readreg; mii->mii_writereg = axen_miibus_writereg; mii->mii_statchg = axen_miibus_statchg; mii->mii_flags = MIIF_AUTOTSLEEP; ifmedia_init(&mii->mii_media, 0, axen_ifmedia_upd, axen_ifmedia_sts); 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); /* Attach the interface. */ if_attach(ifp); ether_ifattach(ifp); timeout_set(&sc->axen_stat_ch, axen_tick, sc); splx(s); } int axen_detach(struct device *self, int flags) { struct axen_softc *sc = (struct axen_softc *)self; int s; struct ifnet *ifp = GET_IFP(sc); DPRINTFN(2,("%s: %s: enter\n", sc->axen_dev.dv_xname, __func__)); if (timeout_initialized(&sc->axen_stat_ch)) timeout_del(&sc->axen_stat_ch); if (sc->axen_ep[AXEN_ENDPT_TX] != NULL) usbd_abort_pipe(sc->axen_ep[AXEN_ENDPT_TX]); if (sc->axen_ep[AXEN_ENDPT_RX] != NULL) usbd_abort_pipe(sc->axen_ep[AXEN_ENDPT_RX]); if (sc->axen_ep[AXEN_ENDPT_INTR] != NULL) usbd_abort_pipe(sc->axen_ep[AXEN_ENDPT_INTR]); /* * Remove any pending tasks. They cannot be executing because they run * in the same thread as detach. */ usb_rem_task(sc->axen_udev, &sc->axen_tick_task); usb_rem_task(sc->axen_udev, &sc->axen_stop_task); s = splusb(); if (--sc->axen_refcnt >= 0) { /* Wait for processes to go away */ usb_detach_wait(&sc->axen_dev); } if (ifp->if_flags & IFF_RUNNING) axen_stop(sc); mii_detach(&sc->axen_mii, MII_PHY_ANY, MII_OFFSET_ANY); ifmedia_delete_instance(&sc->axen_mii.mii_media, IFM_INST_ANY); if (ifp->if_softc != NULL) { ether_ifdetach(ifp); if_detach(ifp); } #ifdef DIAGNOSTIC if (sc->axen_ep[AXEN_ENDPT_TX] != NULL || sc->axen_ep[AXEN_ENDPT_RX] != NULL || sc->axen_ep[AXEN_ENDPT_INTR] != NULL) printf("%s: detach has active endpoints\n", sc->axen_dev.dv_xname); #endif if (--sc->axen_refcnt >= 0) { /* Wait for processes to go away. */ usb_detach_wait(&sc->axen_dev); } splx(s); return 0; } struct mbuf * axen_newbuf(void) { struct mbuf *m; MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == NULL) return NULL; MCLGET(m, M_DONTWAIT); if (!(m->m_flags & M_EXT)) { m_freem(m); return NULL; } m->m_len = m->m_pkthdr.len = MCLBYTES; m_adj(m, ETHER_ALIGN); return m; } int axen_rx_list_init(struct axen_softc *sc) { struct axen_cdata *cd; struct axen_chain *c; int i; DPRINTF(("%s: %s: enter\n", sc->axen_dev.dv_xname, __func__)); cd = &sc->axen_cdata; for (i = 0; i < AXEN_RX_LIST_CNT; i++) { c = &cd->axen_rx_chain[i]; c->axen_sc = sc; c->axen_idx = i; c->axen_mbuf = NULL; if (c->axen_xfer == NULL) { c->axen_xfer = usbd_alloc_xfer(sc->axen_udev); if (c->axen_xfer == NULL) return ENOBUFS; c->axen_buf = usbd_alloc_buffer(c->axen_xfer, sc->axen_bufsz); if (c->axen_buf == NULL) { usbd_free_xfer(c->axen_xfer); return ENOBUFS; } } } return 0; } int axen_tx_list_init(struct axen_softc *sc) { struct axen_cdata *cd; struct axen_chain *c; int i; DPRINTF(("%s: %s: enter\n", sc->axen_dev.dv_xname, __func__)); cd = &sc->axen_cdata; for (i = 0; i < AXEN_TX_LIST_CNT; i++) { c = &cd->axen_tx_chain[i]; c->axen_sc = sc; c->axen_idx = i; c->axen_mbuf = NULL; if (c->axen_xfer == NULL) { c->axen_xfer = usbd_alloc_xfer(sc->axen_udev); if (c->axen_xfer == NULL) return ENOBUFS; c->axen_buf = usbd_alloc_buffer(c->axen_xfer, sc->axen_bufsz); if (c->axen_buf == NULL) { usbd_free_xfer(c->axen_xfer); return ENOBUFS; } } } return 0; } /* * A frame has been uploaded: pass the resulting mbuf chain up to * the higher level protocols. */ void axen_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) { struct axen_chain *c = (struct axen_chain *)priv; struct axen_softc *sc = c->axen_sc; struct ifnet *ifp = GET_IFP(sc); u_char *buf = c->axen_buf; struct mbuf *m; u_int32_t total_len; u_int32_t rx_hdr, pkt_hdr; u_int32_t *hdr_p; u_int16_t hdr_offset, pkt_count; size_t pkt_len; size_t temp; int s; DPRINTFN(10,("%s: %s: enter\n", sc->axen_dev.dv_xname,__func__)); if (usbd_is_dying(sc->axen_udev)) return; if (!(ifp->if_flags & IFF_RUNNING)) return; if (status != USBD_NORMAL_COMPLETION) { if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) return; if (usbd_ratecheck(&sc->axen_rx_notice)) { printf("%s: usb errors on rx: %s\n", sc->axen_dev.dv_xname, usbd_errstr(status)); } if (status == USBD_STALLED) usbd_clear_endpoint_stall_async(sc->axen_ep[AXEN_ENDPT_RX]); goto done; } usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); if (total_len < sizeof(pkt_hdr)) { ifp->if_ierrors++; goto done; } /* * buffer map * [packet #0]...[packet #n][pkt hdr#0]..[pkt hdr#n][recv_hdr] * each packet has 0xeeee as psuedo header.. */ hdr_p = (u_int32_t *)(buf + total_len - sizeof(u_int32_t)); rx_hdr = letoh32(*hdr_p); hdr_offset = (u_int16_t)(rx_hdr >> 16); pkt_count = (u_int16_t)(rx_hdr & 0xffff); if (total_len > sc->axen_bufsz) { printf("rxeof: too large transfer\n"); goto done; } /* sanity check */ if ((int)hdr_offset > total_len) { ifp->if_ierrors++; usbd_delay_ms(sc->axen_udev, 100); goto done; } /* point first packet header */ hdr_p = (u_int32_t*)(buf + hdr_offset); /* * ax88179 will pack multiple ip packet to a USB transaction. * process all of packets in the buffer */ #if 1 /* XXX: paranoiac check. need to remove later */ #define AXEN_MAX_PACKED_PACKET 200 if (pkt_count > AXEN_MAX_PACKED_PACKET) { DPRINTF(("Too many packets (%d) in a transaction, discard.\n", pkt_count)); goto done; } #endif do { if ((buf[0] != 0xee) || (buf[1] != 0xee)){ printf("invalid buffer(pkt#%d), continue\n", pkt_count); ifp->if_ierrors += pkt_count; goto done; } pkt_hdr = letoh32(*hdr_p); pkt_len = (pkt_hdr >> 16) & 0x1fff; DPRINTFN(10,("rxeof: packet#%d, pkt_hdr 0x%08x, pkt_len %d\n", pkt_count, pkt_hdr, pkt_len)); if ((pkt_hdr & AXEN_RXHDR_CRC_ERR) || (pkt_hdr & AXEN_RXHDR_DROP_ERR)) { ifp->if_ierrors++; /* move to next pkt header */ DPRINTF(("crc err(pkt#%d)\n", pkt_count)); goto nextpkt; } /* process each packet */ /* allocate mbuf */ m = axen_newbuf(); if (m == NULL) { ifp->if_ierrors++; goto nextpkt; } /* skip pseudo header (2byte) */ ifp->if_ipackets++; m->m_pkthdr.rcvif = ifp; m->m_pkthdr.len = m->m_len = pkt_len - 2; #ifdef AXEN_TOE /* cheksum err */ if ((pkt_hdr & AXEN_RXHDR_L3CSUM_ERR) || (pkt_hdr & AXEN_RXHDR_L4CSUM_ERR)) { printf("checksum err (pkt#%d)\n", pkt_count); goto nextpkt; } else { m->m_pkthdr.csum_flags |= M_IPV4_CSUM_IN_OK; } int l4_type; l4_type = (pkt_hdr & AXEN_RXHDR_L4_TYPE_MASK) >> AXEN_RXHDR_L4_TYPE_OFFSET; if ((l4_type == AXEN_RXHDR_L4_TYPE_TCP) || (l4_type == AXEN_RXHDR_L4_TYPE_UDP)) m->m_pkthdr.csum_flags |= M_TCP_CSUM_IN_OK | M_UDP_CSUM_IN_OK; #endif memcpy(mtod(m, char *), buf + 2, pkt_len - 2); /* push the packet up */ s = splnet(); #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_IN); #endif ether_input_mbuf(ifp, m); splx(s); nextpkt: /* * prepare next packet * as each packet will be aligned 8byte boundary, * need to fix up the start point of the buffer. */ temp = ((pkt_len + 7) & 0xfff8); buf = buf + temp; hdr_p++; pkt_count--; } while( pkt_count > 0); done: /* clear buffer for next transaction */ memset(c->axen_buf, 0, sc->axen_bufsz); /* Setup new transfer. */ usbd_setup_xfer(xfer, sc->axen_ep[AXEN_ENDPT_RX], c, c->axen_buf, sc->axen_bufsz, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, axen_rxeof); usbd_transfer(xfer); DPRINTFN(10,("%s: %s: start rx\n", sc->axen_dev.dv_xname, __func__)); } /* * A frame was downloaded to the chip. It's safe for us to clean up * the list buffers. */ void axen_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) { struct axen_softc *sc; struct axen_chain *c; struct ifnet *ifp; int s; c = priv; sc = c->axen_sc; ifp = &sc->arpcom.ac_if; if (usbd_is_dying(sc->axen_udev)) return; s = splnet(); if (status != USBD_NORMAL_COMPLETION) { if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { splx(s); return; } ifp->if_oerrors++; printf("axen%d: usb error on tx: %s\n", sc->axen_unit, usbd_errstr(status)); if (status == USBD_STALLED) usbd_clear_endpoint_stall_async(sc->axen_ep[AXEN_ENDPT_TX]); splx(s); return; } ifp->if_timer = 0; ifp->if_flags &= ~IFF_OACTIVE; m_freem(c->axen_mbuf); c->axen_mbuf = NULL; if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) axen_start(ifp); ifp->if_opackets++; splx(s); } void axen_tick(void *xsc) { struct axen_softc *sc = xsc; if (sc == NULL) return; DPRINTFN(0xff, ("%s: %s: enter\n", sc->axen_dev.dv_xname, __func__)); if (usbd_is_dying(sc->axen_udev)) return; /* Perform periodic stuff in process context */ usb_add_task(sc->axen_udev, &sc->axen_tick_task); } void axen_tick_task(void *xsc) { int s; struct axen_softc *sc; struct ifnet *ifp; struct mii_data *mii; sc = xsc; if (sc == NULL) return; if (usbd_is_dying(sc->axen_udev)) return; ifp = GET_IFP(sc); mii = GET_MII(sc); if (mii == NULL) return; s = splnet(); mii_tick(mii); if (sc->axen_link == 0) axen_miibus_statchg(&sc->axen_dev); timeout_add_sec(&sc->axen_stat_ch, 1); splx(s); } int axen_encap(struct axen_softc *sc, struct mbuf *m, int idx) { struct axen_chain *c; usbd_status err; struct axen_sframe_hdr hdr; int length, boundary; c = &sc->axen_cdata.axen_tx_chain[idx]; boundary = (sc->axen_udev->speed == USB_SPEED_HIGH) ? 512 : 64; hdr.plen = htole32(m->m_pkthdr.len); hdr.gso = 0; /* disable segmentation offloading */ memcpy(c->axen_buf, &hdr, sizeof(hdr)); length = sizeof(hdr); m_copydata(m, 0, m->m_pkthdr.len, c->axen_buf + length); length += m->m_pkthdr.len; if ((length % boundary) == 0) { hdr.plen = 0x0; hdr.gso |= 0x80008000; /* enable padding */ memcpy(c->axen_buf + length, &hdr, sizeof(hdr)); length += sizeof(hdr); } c->axen_mbuf = m; usbd_setup_xfer(c->axen_xfer, sc->axen_ep[AXEN_ENDPT_TX], c, c->axen_buf, length, USBD_FORCE_SHORT_XFER | USBD_NO_COPY, 10000, axen_txeof); /* Transmit */ err = usbd_transfer(c->axen_xfer); if (err != USBD_IN_PROGRESS) { axen_stop(sc); return EIO; } sc->axen_cdata.axen_tx_cnt++; return 0; } void axen_start(struct ifnet *ifp) { struct axen_softc *sc; struct mbuf *m_head = NULL; sc = ifp->if_softc; if (!sc->axen_link) return; if (ifp->if_flags & IFF_OACTIVE) return; IFQ_POLL(&ifp->if_snd, m_head); if (m_head == NULL) return; if (axen_encap(sc, m_head, 0)) { ifp->if_flags |= IFF_OACTIVE; return; } IFQ_DEQUEUE(&ifp->if_snd, m_head); /* * If there's a BPF listener, bounce a copy of this frame * to him. */ #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap(ifp->if_bpf, m_head, BPF_DIRECTION_OUT); #endif ifp->if_flags |= IFF_OACTIVE; /* * Set a timeout in case the chip goes out to lunch. */ ifp->if_timer = 5; } void axen_init(void *xsc) { struct axen_softc *sc = xsc; struct ifnet *ifp = &sc->arpcom.ac_if; struct axen_chain *c; usbd_status err; int i, s; uByte bval; uWord wval; uint16_t rxmode; s = splnet(); /* * Cancel pending I/O and free all RX/TX buffers. */ axen_reset(sc); /* XXX: ? */ bval = 0x01; axen_cmd(sc, AXEN_CMD_MAC_WRITE, 1, AXEN_UNK_28, &bval); /* Init RX ring. */ if (axen_rx_list_init(sc) == ENOBUFS) { printf("axen%d: rx list init failed\n", sc->axen_unit); splx(s); return; } /* Init TX ring. */ if (axen_tx_list_init(sc) == ENOBUFS) { printf("axen%d: tx list init failed\n", sc->axen_unit); splx(s); return; } /* Program promiscuous mode and multicast filters. */ axen_iff(sc); /* Enable receiver, set RX mode */ axen_lock_mii(sc); axen_cmd(sc, AXEN_CMD_MAC_READ2, 2, AXEN_MAC_RXCTL, &wval); rxmode = UGETW(wval); rxmode |= AXEN_RXCTL_START; USETW(wval, rxmode); axen_cmd(sc, AXEN_CMD_MAC_WRITE2, 2, AXEN_MAC_RXCTL, &wval); axen_unlock_mii(sc); /* Open RX and TX pipes. */ err = usbd_open_pipe(sc->axen_iface, sc->axen_ed[AXEN_ENDPT_RX], USBD_EXCLUSIVE_USE, &sc->axen_ep[AXEN_ENDPT_RX]); if (err) { printf("axen%d: open rx pipe failed: %s\n", sc->axen_unit, usbd_errstr(err)); splx(s); return; } err = usbd_open_pipe(sc->axen_iface, sc->axen_ed[AXEN_ENDPT_TX], USBD_EXCLUSIVE_USE, &sc->axen_ep[AXEN_ENDPT_TX]); if (err) { printf("axen%d: open tx pipe failed: %s\n", sc->axen_unit, usbd_errstr(err)); splx(s); return; } /* Start up the receive pipe. */ for (i = 0; i < AXEN_RX_LIST_CNT; i++) { c = &sc->axen_cdata.axen_rx_chain[i]; usbd_setup_xfer(c->axen_xfer, sc->axen_ep[AXEN_ENDPT_RX], c, c->axen_buf, sc->axen_bufsz, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, axen_rxeof); usbd_transfer(c->axen_xfer); } sc->axen_link = 0; ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; splx(s); timeout_add_sec(&sc->axen_stat_ch, 1); return; } int axen_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { struct axen_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *)data; struct ifaddr *ifa = (struct ifaddr *)data; int s; int error = 0; s = splnet(); switch(cmd) { case SIOCSIFADDR: ifp->if_flags |= IFF_UP; if (!(ifp->if_flags & IFF_RUNNING)) axen_init(sc); #ifdef INET if (ifa->ifa_addr->sa_family == AF_INET) arp_ifinit(&sc->arpcom, ifa); #endif break; case SIOCSIFFLAGS: if (ifp->if_flags & IFF_UP) { if (ifp->if_flags & IFF_RUNNING) error = ENETRESET; else axen_init(sc); } else { if (ifp->if_flags & IFF_RUNNING) axen_stop(sc); } break; case SIOCGIFMEDIA: case SIOCSIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &sc->axen_mii.mii_media, cmd); break; #if 0 case SCIOCSIFMTU: /* XXX need to set AX_MEDIUM_JUMBO_EN here? */ /* fall through */ #endif default: error = ether_ioctl(ifp, &sc->arpcom, cmd, data); } if (error == ENETRESET) { if (ifp->if_flags & IFF_RUNNING) axen_iff(sc); error = 0; } splx(s); return error; } void axen_watchdog(struct ifnet *ifp) { struct axen_softc *sc; struct axen_chain *c; usbd_status stat; int s; sc = ifp->if_softc; ifp->if_oerrors++; printf("axen%d: watchdog timeout\n", sc->axen_unit); s = splusb(); c = &sc->axen_cdata.axen_tx_chain[0]; usbd_get_xfer_status(c->axen_xfer, NULL, NULL, NULL, &stat); axen_txeof(c->axen_xfer, c, stat); if (!IFQ_IS_EMPTY(&ifp->if_snd)) axen_start(ifp); splx(s); } /* * Stop the adapter and free any mbufs allocated to the * RX and TX lists. */ void axen_stop(struct axen_softc *sc) { usbd_status err; struct ifnet *ifp; int i; axen_reset(sc); ifp = &sc->arpcom.ac_if; ifp->if_timer = 0; ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); timeout_del(&sc->axen_stat_ch); /* Stop transfers. */ if (sc->axen_ep[AXEN_ENDPT_RX] != NULL) { usbd_abort_pipe(sc->axen_ep[AXEN_ENDPT_RX]); err = usbd_close_pipe(sc->axen_ep[AXEN_ENDPT_RX]); if (err) { printf("axen%d: close rx pipe failed: %s\n", sc->axen_unit, usbd_errstr(err)); } sc->axen_ep[AXEN_ENDPT_RX] = NULL; } if (sc->axen_ep[AXEN_ENDPT_TX] != NULL) { usbd_abort_pipe(sc->axen_ep[AXEN_ENDPT_TX]); err = usbd_close_pipe(sc->axen_ep[AXEN_ENDPT_TX]); if (err) { printf("axen%d: close tx pipe failed: %s\n", sc->axen_unit, usbd_errstr(err)); } sc->axen_ep[AXEN_ENDPT_TX] = NULL; } if (sc->axen_ep[AXEN_ENDPT_INTR] != NULL) { usbd_abort_pipe(sc->axen_ep[AXEN_ENDPT_INTR]); err = usbd_close_pipe(sc->axen_ep[AXEN_ENDPT_INTR]); if (err) { printf("axen%d: close intr pipe failed: %s\n", sc->axen_unit, usbd_errstr(err)); } sc->axen_ep[AXEN_ENDPT_INTR] = NULL; } /* Free RX resources. */ for (i = 0; i < AXEN_RX_LIST_CNT; i++) { if (sc->axen_cdata.axen_rx_chain[i].axen_mbuf != NULL) { m_freem(sc->axen_cdata.axen_rx_chain[i].axen_mbuf); sc->axen_cdata.axen_rx_chain[i].axen_mbuf = NULL; } if (sc->axen_cdata.axen_rx_chain[i].axen_xfer != NULL) { usbd_free_xfer(sc->axen_cdata.axen_rx_chain[i].axen_xfer); sc->axen_cdata.axen_rx_chain[i].axen_xfer = NULL; } } /* Free TX resources. */ for (i = 0; i < AXEN_TX_LIST_CNT; i++) { if (sc->axen_cdata.axen_tx_chain[i].axen_mbuf != NULL) { m_freem(sc->axen_cdata.axen_tx_chain[i].axen_mbuf); sc->axen_cdata.axen_tx_chain[i].axen_mbuf = NULL; } if (sc->axen_cdata.axen_tx_chain[i].axen_xfer != NULL) { usbd_free_xfer(sc->axen_cdata.axen_tx_chain[i].axen_xfer); sc->axen_cdata.axen_tx_chain[i].axen_xfer = NULL; } } sc->axen_link = 0; }