/*- * Copyright (c) 1997, 1998, 1999, 2000 * Bill Paul . 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Bill Paul. * 4. 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 Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD * 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. * * $FreeBSD: src/sys/dev/usb/if_aue.c,v 1.78 2003/12/17 14:23:07 sanpei Exp $ * $DragonFly: src/sys/dev/netif/aue/if_aue.c,v 1.36 2007/11/06 07:37:00 hasso Exp $ */ /* * ADMtek AN986 Pegasus and AN8511 Pegasus II USB to ethernet driver. * Datasheet is available from http://www.admtek.com.tw. * * Written by Bill Paul * Electrical Engineering Department * Columbia University, New York City */ /* * The Pegasus chip uses four USB "endpoints" to provide 10/100 ethernet * support: the control endpoint for reading/writing registers, burst * read endpoint for packet reception, burst write for packet transmission * and one for "interrupts." The chip uses the same RX filter scheme * as the other ADMtek ethernet parts: one perfect filter entry for the * the station address and a 64-bit multicast hash table. The chip supports * both MII and HomePNA attachments. * * Since the maximum data transfer speed of USB is supposed to be 12Mbps, * you're never really going to get 100Mbps speeds from this device. I * think the idea is to allow the device to connect to 10 or 100Mbps * networks, not necessarily to provide 100Mbps performance. Also, since * the controller uses an external PHY chip, it's possible that board * designers might simply choose a 10Mbps PHY. * * Registers are accessed using usbd_do_request(). Packet transfers are * done using usbd_transfer() and friends. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "../mii_layer/mii.h" #include "../mii_layer/miivar.h" #include "if_auereg.h" MODULE_DEPEND(aue, usb, 1, 1, 1); MODULE_DEPEND(aue, miibus, 1, 1, 1); /* "controller miibus0" required. See GENERIC if you get errors here. */ #include "miibus_if.h" struct aue_type { struct usb_devno aue_dev; u_int16_t aue_flags; #define LSYS 0x0001 /* use Linksys reset */ #define PNA 0x0002 /* has Home PNA */ #define PII 0x0004 /* Pegasus II chip */ }; static const struct aue_type aue_devs[] = { {{ USB_DEVICE(0x03f0, 0x811c) }, PII }, /* HP HN210E */ {{ USB_DEVICE(0x0411, 0x0001) }, 0 }, /* Melco LUA-TX */ {{ USB_DEVICE(0x0411, 0x0005) }, 0 }, /* Melco LUA-TX */ {{ USB_DEVICE(0x0411, 0x0009) }, PII }, /* Melco LUA2-TX */ {{ USB_DEVICE(0x045e, 0x007a) }, PII }, /* Microsoft MN110 */ {{ USB_DEVICE(0x04bb, 0x0904) }, 0 }, /* I-O DATA USB ETTX */ {{ USB_DEVICE(0x04bb, 0x0913) }, PII }, /* I-O DATA USB ETTX */ {{ USB_DEVICE(0x0506, 0x4601) }, PII }, /* 3com HomeConnect 3C460B */ {{ USB_DEVICE(0x050d, 0x0121) }, PII }, /* Belkin USB to LAN Converter */ {{ USB_DEVICE(0x056e, 0x200c) }, 0 }, /* Elecom LD-USB/TX */ {{ USB_DEVICE(0x056e, 0x4002) }, LSYS }, /* Elecom LD-USB/TX */ {{ USB_DEVICE(0x056e, 0x4005) }, PII }, /* Elecom LD-USBL/TX */ {{ USB_DEVICE(0x056e, 0x400b) }, 0 }, /* Elecom LD-USB/TX */ {{ USB_DEVICE(0x056e, 0xabc1) }, LSYS }, /* Elecom LD-USB/TX */ {{ USB_DEVICE(0x05cc, 0x3000) }, 0 }, /* Elsa Microlink USB2Ethernet */ {{ USB_DEVICE(0x066b, 0x200c) }, LSYS|PII }, /* Linksys USB10TX */ {{ USB_DEVICE(0x066b, 0x2202) }, LSYS }, /* Linksys USB10T */ {{ USB_DEVICE(0x066b, 0x2203) }, LSYS }, /* Linksys USB100TX */ {{ USB_DEVICE(0x066b, 0x2204) }, LSYS|PNA }, /* Linksys USB100H1 */ {{ USB_DEVICE(0x066b, 0x2206) }, LSYS }, /* Linksys USB10TA */ {{ USB_DEVICE(0x066b, 0x400b) }, LSYS|PII }, /* Linksys USB10TX */ {{ USB_DEVICE(0x067c, 0x1001) }, PII }, /* Siemens SpeedStream USB */ {{ USB_DEVICE(0x0707, 0x0200) }, 0 }, /* SMC 2202USB */ {{ USB_DEVICE(0x0707, 0x0201) }, PII }, /* SMC 2206USB */ {{ USB_DEVICE(0x07a6, 0x0986) }, PNA }, /* ADMtek AN986 */ {{ USB_DEVICE(0x07a6, 0x8511) }, PII }, /* ADMtek AN8511 */ {{ USB_DEVICE(0x07a6, 0x8513) }, PII }, /* ADMtek AN8513 */ {{ USB_DEVICE(0x07aa, 0x0004) }, 0 }, /* Corega FEther USB-TX */ {{ USB_DEVICE(0x07aa, 0x000d) }, PII }, /* Corega FEther USB-TXS */ {{ USB_DEVICE(0x07b8, 0x110c) }, PNA|PII }, /* AboCom XX1 */ {{ USB_DEVICE(0x07b8, 0x200c) }, PII }, /* AboCom XX2 */ {{ USB_DEVICE(0x07b8, 0x4002) }, LSYS }, /* AboCom UFE1000 */ {{ USB_DEVICE(0x07b8, 0x4003) }, 0 }, /* AboCom DSB650TX_PNA */ {{ USB_DEVICE(0x07b8, 0x4004) }, PNA }, /* AboCom XX4 */ {{ USB_DEVICE(0x07b8, 0x4007) }, PNA }, /* AboCom XX5 */ {{ USB_DEVICE(0x07b8, 0x400b) }, PII }, /* AboCom XX6 */ {{ USB_DEVICE(0x07b8, 0x400c) }, PII }, /* AboCom XX7 */ {{ USB_DEVICE(0x07b8, 0x4102) }, PII }, /* AboCom XX8 */ {{ USB_DEVICE(0x07b8, 0x4104) }, PNA }, /* AboCom XX9 */ {{ USB_DEVICE(0x07b8, 0xabc1) }, 0 }, /* AboCom XX10 */ {{ USB_DEVICE(0x083a, 0x1046) }, 0 }, /* Accton USB320-EC */ {{ USB_DEVICE(0x083a, 0x5046) }, PII }, /* Accton SpeedStream 1001 */ {{ USB_DEVICE(0x08d1, 0x0003) }, PII }, /* SmartBridges smartNIC 2 PnP */ {{ USB_DEVICE(0x08dd, 0x0986) }, 0 }, /* Billionton USB100N */ {{ USB_DEVICE(0x08dd, 0x0987) }, PNA }, /* Billionton USB100LP */ {{ USB_DEVICE(0x08dd, 0x0988) }, 0 }, /* Billionton USB100EL */ {{ USB_DEVICE(0x08dd, 0x8511) }, PII }, /* Billionton USBE100 */ {{ USB_DEVICE(0x0951, 0x000a) }, 0 }, /* Kingston KNU101TX */ {{ USB_DEVICE(0x0e66, 0x400c) }, PII }, /* Hawking UF100 */ {{ USB_DEVICE(0x15e8, 0x9100) }, 0 }, /* SOHOware NUB100 */ {{ USB_DEVICE(0x2001, 0x200c) }, LSYS|PII },/* D-Link DSB650TX4 */ {{ USB_DEVICE(0x2001, 0x4001) }, LSYS }, /* D-Link DSB650TX1 */ {{ USB_DEVICE(0x2001, 0x4002) }, LSYS }, /* D-Link DSB650TX */ {{ USB_DEVICE(0x2001, 0x4003) }, PNA }, /* D-Link DSB650TX_PNA */ {{ USB_DEVICE(0x2001, 0x400b) }, LSYS|PII }, /* D-Link DSB650TX3 */ {{ USB_DEVICE(0x2001, 0x4102) }, LSYS|PII }, /* D-Link DSB650TX2 */ {{ USB_DEVICE(0x2001, 0xabc1) }, LSYS }, /* D-Link DSB650 */ }; #define aue_lookup(v, p) ((const struct aue_type *)usb_lookup(aue_devs, v, p)) static int aue_match(device_t); static int aue_attach(device_t); static int aue_detach(device_t); static void aue_reset_pegasus_II(struct aue_softc *sc); static int aue_tx_list_init(struct aue_softc *); static int aue_rx_list_init(struct aue_softc *); static int aue_newbuf(struct aue_softc *, struct aue_chain *, struct mbuf *); static int aue_encap(struct aue_softc *, struct mbuf *, int); #ifdef AUE_INTR_PIPE static void aue_intr(usbd_xfer_handle, usbd_private_handle, usbd_status); #endif static void aue_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status); static void aue_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status); static void aue_tick(void *); static void aue_rxstart(struct ifnet *); static void aue_start(struct ifnet *); static int aue_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *); static void aue_init(void *); static void aue_stop(struct aue_softc *); static void aue_watchdog(struct ifnet *); static void aue_shutdown(device_t); static int aue_ifmedia_upd(struct ifnet *); static void aue_ifmedia_sts(struct ifnet *, struct ifmediareq *); static void aue_eeprom_getword(struct aue_softc *, int, u_int16_t *); static void aue_read_eeprom(struct aue_softc *, caddr_t, int, int, int); static int aue_miibus_readreg(device_t, int, int); static int aue_miibus_writereg(device_t, int, int, int); static void aue_miibus_statchg(device_t); static void aue_setmulti(struct aue_softc *); static void aue_reset(struct aue_softc *); static int aue_csr_read_1(struct aue_softc *, int); static int aue_csr_write_1(struct aue_softc *, int, int); static int aue_csr_read_2(struct aue_softc *, int); static int aue_csr_write_2(struct aue_softc *, int, int); static device_method_t aue_methods[] = { /* Device interface */ DEVMETHOD(device_probe, aue_match), DEVMETHOD(device_attach, aue_attach), DEVMETHOD(device_detach, aue_detach), DEVMETHOD(device_shutdown, aue_shutdown), /* bus interface */ DEVMETHOD(bus_print_child, bus_generic_print_child), DEVMETHOD(bus_driver_added, bus_generic_driver_added), /* MII interface */ DEVMETHOD(miibus_readreg, aue_miibus_readreg), DEVMETHOD(miibus_writereg, aue_miibus_writereg), DEVMETHOD(miibus_statchg, aue_miibus_statchg), { 0, 0 } }; static driver_t aue_driver = { "aue", aue_methods, sizeof(struct aue_softc) }; static devclass_t aue_devclass; DECLARE_DUMMY_MODULE(if_aue); DRIVER_MODULE(aue, uhub, aue_driver, aue_devclass, usbd_driver_load, 0); DRIVER_MODULE(miibus, aue, miibus_driver, miibus_devclass, 0, 0); #define AUE_SETBIT(sc, reg, x) \ aue_csr_write_1(sc, reg, aue_csr_read_1(sc, reg) | (x)) #define AUE_CLRBIT(sc, reg, x) \ aue_csr_write_1(sc, reg, aue_csr_read_1(sc, reg) & ~(x)) static int aue_csr_read_1(struct aue_softc *sc, int reg) { usb_device_request_t req; usbd_status err; u_int8_t val = 0; if (sc->aue_dying) return(0); AUE_LOCK(sc); req.bmRequestType = UT_READ_VENDOR_DEVICE; req.bRequest = AUE_UR_READREG; USETW(req.wValue, 0); USETW(req.wIndex, reg); USETW(req.wLength, 1); err = usbd_do_request(sc->aue_udev, &req, &val); AUE_UNLOCK(sc); if (err) { return (0); } return (val); } static int aue_csr_read_2(struct aue_softc *sc, int reg) { usb_device_request_t req; usbd_status err; u_int16_t val = 0; if (sc->aue_dying) return (0); AUE_LOCK(sc); req.bmRequestType = UT_READ_VENDOR_DEVICE; req.bRequest = AUE_UR_READREG; USETW(req.wValue, 0); USETW(req.wIndex, reg); USETW(req.wLength, 2); err = usbd_do_request(sc->aue_udev, &req, &val); AUE_UNLOCK(sc); if (err) { return (0); } return (val); } static int aue_csr_write_1(struct aue_softc *sc, int reg, int val) { usb_device_request_t req; usbd_status err; if (sc->aue_dying) return (0); AUE_LOCK(sc); req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = AUE_UR_WRITEREG; USETW(req.wValue, val); USETW(req.wIndex, reg); USETW(req.wLength, 1); err = usbd_do_request(sc->aue_udev, &req, &val); AUE_UNLOCK(sc); if (err) { return (-1); } return (0); } static int aue_csr_write_2(struct aue_softc *sc, int reg, int val) { usb_device_request_t req; usbd_status err; if (sc->aue_dying) return (0); AUE_LOCK(sc); req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = AUE_UR_WRITEREG; USETW(req.wValue, val); USETW(req.wIndex, reg); USETW(req.wLength, 2); err = usbd_do_request(sc->aue_udev, &req, &val); AUE_UNLOCK(sc); if (err) { return (-1); } return (0); } /* * Read a word of data stored in the EEPROM at address 'addr.' */ static void aue_eeprom_getword(struct aue_softc *sc, int addr, u_int16_t *dest) { int i; u_int16_t word = 0; aue_csr_write_1(sc, AUE_EE_REG, addr); aue_csr_write_1(sc, AUE_EE_CTL, AUE_EECTL_READ); for (i = 0; i < AUE_TIMEOUT; i++) { if (aue_csr_read_1(sc, AUE_EE_CTL) & AUE_EECTL_DONE) break; } if (i == AUE_TIMEOUT) if_printf(&sc->arpcom.ac_if, "EEPROM read timed out\n"); word = aue_csr_read_2(sc, AUE_EE_DATA); *dest = word; return; } /* * Read a sequence of words from the EEPROM. */ static void aue_read_eeprom(struct aue_softc *sc, caddr_t dest, int off, int cnt, int swap) { int i; u_int16_t word = 0, *ptr; for (i = 0; i < cnt; i++) { aue_eeprom_getword(sc, off + i, &word); ptr = (u_int16_t *)(dest + (i * 2)); if (swap) *ptr = ntohs(word); else *ptr = word; } return; } static int aue_miibus_readreg(device_t dev, int phy, int reg) { struct aue_softc *sc = device_get_softc(dev); int i; u_int16_t val = 0; /* * The Am79C901 HomePNA PHY actually contains * two transceivers: a 1Mbps HomePNA PHY and a * 10Mbps full/half duplex ethernet PHY with * NWAY autoneg. However in the ADMtek adapter, * only the 1Mbps PHY is actually connected to * anything, so we ignore the 10Mbps one. It * happens to be configured for MII address 3, * so we filter that out. */ if (sc->aue_vendor == 0x07a6 && sc->aue_product == 0x0986) { if (phy == 3) return (0); #ifdef notdef if (phy != 1) return (0); #endif } aue_csr_write_1(sc, AUE_PHY_ADDR, phy); aue_csr_write_1(sc, AUE_PHY_CTL, reg | AUE_PHYCTL_READ); for (i = 0; i < AUE_TIMEOUT; i++) { if (aue_csr_read_1(sc, AUE_PHY_CTL) & AUE_PHYCTL_DONE) break; } if (i == AUE_TIMEOUT) if_printf(&sc->arpcom.ac_if, "MII read timed out\n"); val = aue_csr_read_2(sc, AUE_PHY_DATA); return (val); } static int aue_miibus_writereg(device_t dev, int phy, int reg, int data) { struct aue_softc *sc = device_get_softc(dev); int i; if (phy == 3) return (0); aue_csr_write_2(sc, AUE_PHY_DATA, data); aue_csr_write_1(sc, AUE_PHY_ADDR, phy); aue_csr_write_1(sc, AUE_PHY_CTL, reg | AUE_PHYCTL_WRITE); for (i = 0; i < AUE_TIMEOUT; i++) { if (aue_csr_read_1(sc, AUE_PHY_CTL) & AUE_PHYCTL_DONE) break; } if (i == AUE_TIMEOUT) if_printf(&sc->arpcom.ac_if, "MII read timed out\n"); return(0); } static void aue_miibus_statchg(device_t dev) { struct aue_softc *sc = device_get_softc(dev); struct mii_data *mii = GET_MII(sc); AUE_CLRBIT(sc, AUE_CTL0, AUE_CTL0_RX_ENB | AUE_CTL0_TX_ENB); if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX) { AUE_SETBIT(sc, AUE_CTL1, AUE_CTL1_SPEEDSEL); } else { AUE_CLRBIT(sc, AUE_CTL1, AUE_CTL1_SPEEDSEL); } if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) AUE_SETBIT(sc, AUE_CTL1, AUE_CTL1_DUPLEX); else AUE_CLRBIT(sc, AUE_CTL1, AUE_CTL1_DUPLEX); AUE_SETBIT(sc, AUE_CTL0, AUE_CTL0_RX_ENB | AUE_CTL0_TX_ENB); /* * Set the LED modes on the LinkSys adapter. * This turns on the 'dual link LED' bin in the auxmode * register of the Broadcom PHY. */ if (sc->aue_flags & LSYS) { u_int16_t auxmode; auxmode = aue_miibus_readreg(dev, 0, 0x1b); aue_miibus_writereg(dev, 0, 0x1b, auxmode | 0x04); } return; } #define AUE_BITS 6 static void aue_setmulti(struct aue_softc *sc) { struct ifnet *ifp; struct ifmultiaddr *ifma; u_int32_t h = 0, i; ifp = &sc->arpcom.ac_if; if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { AUE_SETBIT(sc, AUE_CTL0, AUE_CTL0_ALLMULTI); return; } AUE_CLRBIT(sc, AUE_CTL0, AUE_CTL0_ALLMULTI); /* first, zot all the existing hash bits */ for (i = 0; i < 8; i++) aue_csr_write_1(sc, AUE_MAR0 + i, 0); /* now program new ones */ LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { if (ifma->ifma_addr->sa_family != AF_LINK) continue; h = ether_crc32_le(LLADDR((struct sockaddr_dl *) ifma->ifma_addr), ETHER_ADDR_LEN) & ((1 << AUE_BITS) - 1); AUE_SETBIT(sc, AUE_MAR + (h >> 3), 1 << (h & 0x7)); } return; } static void aue_reset_pegasus_II(struct aue_softc *sc) { /* Magic constants taken from Linux driver. */ aue_csr_write_1(sc, AUE_REG_1D, 0); aue_csr_write_1(sc, AUE_REG_7B, 2); #if 0 if ((sc->aue_flags & HAS_HOME_PNA) && mii_mode) aue_csr_write_1(sc, AUE_REG_81, 6); else #endif aue_csr_write_1(sc, AUE_REG_81, 2); } static void aue_reset(struct aue_softc *sc) { int i; AUE_SETBIT(sc, AUE_CTL1, AUE_CTL1_RESETMAC); for (i = 0; i < AUE_TIMEOUT; i++) { if (!(aue_csr_read_1(sc, AUE_CTL1) & AUE_CTL1_RESETMAC)) break; } if (i == AUE_TIMEOUT) if_printf(&sc->arpcom.ac_if, "reset failed\n"); /* * The PHY(s) attached to the Pegasus chip may be held * in reset until we flip on the GPIO outputs. Make sure * to set the GPIO pins high so that the PHY(s) will * be enabled. * * Note: We force all of the GPIO pins low first, *then* * enable the ones we want. */ aue_csr_write_1(sc, AUE_GPIO0, AUE_GPIO_OUT0|AUE_GPIO_SEL0); aue_csr_write_1(sc, AUE_GPIO0, AUE_GPIO_OUT0|AUE_GPIO_SEL0|AUE_GPIO_SEL1); if (sc->aue_flags & LSYS) { /* Grrr. LinkSys has to be different from everyone else. */ aue_csr_write_1(sc, AUE_GPIO0, AUE_GPIO_SEL0 | AUE_GPIO_SEL1); aue_csr_write_1(sc, AUE_GPIO0, AUE_GPIO_SEL0 | AUE_GPIO_SEL1 | AUE_GPIO_OUT0); } if (sc->aue_flags & PII) aue_reset_pegasus_II(sc); /* Wait a little while for the chip to get its brains in order. */ DELAY(10000); return; } /* * Probe for a Pegasus chip. */ static int aue_match(device_t self) { struct usb_attach_arg *uaa = device_get_ivars(self); if (uaa->iface != NULL) return (UMATCH_NONE); return (aue_lookup(uaa->vendor, uaa->product) != NULL ? UMATCH_VENDOR_PRODUCT : UMATCH_NONE); } /* * Attach the interface. Allocate softc structures, do ifmedia * setup and ethernet/BPF attach. */ static int aue_attach(device_t self) { struct aue_softc *sc = device_get_softc(self); struct usb_attach_arg *uaa = device_get_ivars(self); u_char eaddr[ETHER_ADDR_LEN]; struct ifnet *ifp; usbd_interface_handle iface; usbd_status err; usb_interface_descriptor_t *id; usb_endpoint_descriptor_t *ed; int i; sc->aue_udev = uaa->device; callout_init(&sc->aue_stat_timer); if (usbd_set_config_no(sc->aue_udev, AUE_CONFIG_NO, 0)) { device_printf(self, "setting config no %d failed\n", AUE_CONFIG_NO); return ENXIO; } err = usbd_device2interface_handle(uaa->device, AUE_IFACE_IDX, &iface); if (err) { device_printf(self, "getting interface handle failed\n"); return ENXIO; } sc->aue_iface = iface; sc->aue_flags = aue_lookup(uaa->vendor, uaa->product)->aue_flags; sc->aue_product = uaa->product; sc->aue_vendor = uaa->vendor; id = usbd_get_interface_descriptor(sc->aue_iface); /* Find endpoints. */ for (i = 0; i < id->bNumEndpoints; i++) { ed = usbd_interface2endpoint_descriptor(iface, i); if (ed == NULL) { device_printf(self, "couldn't get ep %d\n", i); return ENXIO; } if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { sc->aue_ed[AUE_ENDPT_RX] = ed->bEndpointAddress; } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { sc->aue_ed[AUE_ENDPT_TX] = ed->bEndpointAddress; } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { sc->aue_ed[AUE_ENDPT_INTR] = ed->bEndpointAddress; } } AUE_LOCK(sc); ifp = &sc->arpcom.ac_if; if_initname(ifp, device_get_name(self), device_get_unit(self)); /* Reset the adapter. */ aue_reset(sc); /* * Get station address from the EEPROM. */ aue_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 0); ifp->if_softc = sc; ifp->if_mtu = ETHERMTU; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = aue_ioctl; ifp->if_start = aue_start; ifp->if_watchdog = aue_watchdog; ifp->if_init = aue_init; ifp->if_baudrate = 10000000; ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN); ifq_set_ready(&ifp->if_snd); /* * Do MII setup. * NOTE: Doing this causes child devices to be attached to us, * which we would normally disconnect at in the detach routine * using device_delete_child(). However the USB code is set up * such that when this driver is removed, all children devices * are removed as well. In effect, the USB code ends up detaching * all of our children for us, so we don't have to do is ourselves * in aue_detach(). It's important to point this out since if * we *do* try to detach the child devices ourselves, we will * end up getting the children deleted twice, which will crash * the system. */ if (mii_phy_probe(self, &sc->aue_miibus, aue_ifmedia_upd, aue_ifmedia_sts)) { device_printf(self, "MII without any PHY!\n"); AUE_UNLOCK(sc); return ENXIO; } /* * Call MI attach routine. */ ether_ifattach(ifp, eaddr, NULL); usb_register_netisr(); sc->aue_dying = 0; AUE_UNLOCK(sc); return 0; } static int aue_detach(device_t dev) { struct aue_softc *sc; struct ifnet *ifp; sc = device_get_softc(dev); AUE_LOCK(sc); ifp = &sc->arpcom.ac_if; sc->aue_dying = 1; callout_stop(&sc->aue_stat_timer); ether_ifdetach(ifp); if (sc->aue_ep[AUE_ENDPT_TX] != NULL) usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_TX]); if (sc->aue_ep[AUE_ENDPT_RX] != NULL) usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_RX]); #ifdef AUE_INTR_PIPE if (sc->aue_ep[AUE_ENDPT_INTR] != NULL) usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_INTR]); #endif AUE_UNLOCK(sc); return (0); } /* * Initialize an RX descriptor and attach an MBUF cluster. */ static int aue_newbuf(struct aue_softc *sc, struct aue_chain *c, struct mbuf *m) { struct mbuf *m_new = NULL; if (m == NULL) { m_new = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR); if (m_new == NULL) { if_printf(&sc->arpcom.ac_if, "no memory for rx list -- packet dropped!\n"); 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->aue_mbuf = m_new; return (0); } static int aue_rx_list_init(struct aue_softc *sc) { struct aue_cdata *cd; struct aue_chain *c; int i; cd = &sc->aue_cdata; for (i = 0; i < AUE_RX_LIST_CNT; i++) { c = &cd->aue_rx_chain[i]; c->aue_sc = sc; c->aue_idx = i; if (aue_newbuf(sc, c, NULL) == ENOBUFS) return (ENOBUFS); if (c->aue_xfer == NULL) { c->aue_xfer = usbd_alloc_xfer(sc->aue_udev); if (c->aue_xfer == NULL) return (ENOBUFS); } } return (0); } static int aue_tx_list_init(struct aue_softc *sc) { struct aue_cdata *cd; struct aue_chain *c; int i; cd = &sc->aue_cdata; for (i = 0; i < AUE_TX_LIST_CNT; i++) { c = &cd->aue_tx_chain[i]; c->aue_sc = sc; c->aue_idx = i; c->aue_mbuf = NULL; if (c->aue_xfer == NULL) { c->aue_xfer = usbd_alloc_xfer(sc->aue_udev); if (c->aue_xfer == NULL) return (ENOBUFS); } c->aue_buf = kmalloc(AUE_BUFSZ, M_USBDEV, M_WAITOK); if (c->aue_buf == NULL) return (ENOBUFS); } return (0); } #ifdef AUE_INTR_PIPE static void aue_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) { struct aue_softc *sc = priv; struct ifnet *ifp; struct aue_intrpkt *p; AUE_LOCK(sc); ifp = &sc->arpcom.ac_if; if (!(ifp->if_flags & IFF_RUNNING)) { AUE_UNLOCK(sc); return; } if (status != USBD_NORMAL_COMPLETION) { if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { AUE_UNLOCK(sc); return; } if_printf(ifp, "usb error on intr: %s\n", usbd_errstr(status)); if (status == USBD_STALLED) usbd_clear_endpoint_stall(sc->aue_ep[AUE_ENDPT_RX]); AUE_UNLOCK(sc); return; } usbd_get_xfer_status(xfer, NULL, (void **)&p, NULL, NULL); if (p->aue_txstat0) ifp->if_oerrors++; if (p->aue_txstat0 & (AUE_TXSTAT0_LATECOLL & AUE_TXSTAT0_EXCESSCOLL)) ifp->if_collisions++; AUE_UNLOCK(sc); return; } #endif static void aue_rxstart(struct ifnet *ifp) { struct aue_softc *sc; struct aue_chain *c; sc = ifp->if_softc; AUE_LOCK(sc); c = &sc->aue_cdata.aue_rx_chain[sc->aue_cdata.aue_rx_prod]; if (aue_newbuf(sc, c, NULL) == ENOBUFS) { ifp->if_ierrors++; AUE_UNLOCK(sc); return; } /* Setup new transfer. */ usbd_setup_xfer(c->aue_xfer, sc->aue_ep[AUE_ENDPT_RX], c, mtod(c->aue_mbuf, char *), AUE_BUFSZ, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, aue_rxeof); usbd_transfer(c->aue_xfer); AUE_UNLOCK(sc); return; } /* * A frame has been uploaded: pass the resulting mbuf chain up to * the higher level protocols. */ static void aue_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) { struct aue_chain *c = priv; struct aue_softc *sc = c->aue_sc; struct mbuf *m; struct ifnet *ifp; int total_len = 0; struct aue_rxpkt r; if (sc->aue_dying) return; AUE_LOCK(sc); ifp = &sc->arpcom.ac_if; if (!(ifp->if_flags & IFF_RUNNING)) { AUE_UNLOCK(sc); return; } if (status != USBD_NORMAL_COMPLETION) { if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { AUE_UNLOCK(sc); return; } if (usbd_ratecheck(&sc->aue_rx_notice)) { if_printf(ifp, "usb error on rx: %s\n", usbd_errstr(status)); } if (status == USBD_STALLED) usbd_clear_endpoint_stall(sc->aue_ep[AUE_ENDPT_RX]); goto done; } usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); if (total_len <= 4 + ETHER_CRC_LEN) { ifp->if_ierrors++; goto done; } m = c->aue_mbuf; bcopy(mtod(m, char *) + total_len - 4, (char *)&r, sizeof(r)); /* Turn off all the non-error bits in the rx status word. */ r.aue_rxstat &= AUE_RXSTAT_MASK; if (r.aue_rxstat) { ifp->if_ierrors++; goto done; } /* No errors; receive the packet. */ total_len -= (4 + ETHER_CRC_LEN); ifp->if_ipackets++; m->m_pkthdr.rcvif = ifp; m->m_pkthdr.len = m->m_len = total_len; /* Put the packet on the special USB input queue. */ usb_ether_input(m); aue_rxstart(ifp); if (!ifq_is_empty(&ifp->if_snd)) (*ifp->if_start)(ifp); AUE_UNLOCK(sc); return; done: /* Setup new transfer. */ usbd_setup_xfer(xfer, sc->aue_ep[AUE_ENDPT_RX], c, mtod(c->aue_mbuf, char *), AUE_BUFSZ, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, aue_rxeof); usbd_transfer(xfer); AUE_UNLOCK(sc); return; } /* * A frame was downloaded to the chip. It's safe for us to clean up * the list buffers. */ static void aue_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) { struct aue_chain *c = priv; struct aue_softc *sc = c->aue_sc; struct ifnet *ifp; usbd_status err; AUE_LOCK(sc); ifp = &sc->arpcom.ac_if; if (status != USBD_NORMAL_COMPLETION) { if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { AUE_UNLOCK(sc); return; } if_printf(ifp, "usb error on tx: %s\n", usbd_errstr(status)); if (status == USBD_STALLED) usbd_clear_endpoint_stall(sc->aue_ep[AUE_ENDPT_TX]); AUE_UNLOCK(sc); return; } ifp->if_timer = 0; ifp->if_flags &= ~IFF_OACTIVE; usbd_get_xfer_status(c->aue_xfer, NULL, NULL, NULL, &err); if (c->aue_mbuf != NULL) { m_free(c->aue_mbuf); c->aue_mbuf = NULL; } if (err) ifp->if_oerrors++; else ifp->if_opackets++; if (!ifq_is_empty(&ifp->if_snd)) (*ifp->if_start)(ifp); AUE_UNLOCK(sc); return; } static void aue_tick(void *xsc) { struct aue_softc *sc = xsc; struct ifnet *ifp; struct mii_data *mii; if (sc == NULL) return; AUE_LOCK(sc); ifp = &sc->arpcom.ac_if; mii = GET_MII(sc); if (mii == NULL) { AUE_UNLOCK(sc); return; } mii_tick(mii); if (!sc->aue_link && mii->mii_media_status & IFM_ACTIVE && IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { sc->aue_link++; if (!ifq_is_empty(&ifp->if_snd)) aue_start(ifp); } callout_reset(&sc->aue_stat_timer, hz, aue_tick, sc); AUE_UNLOCK(sc); return; } static int aue_encap(struct aue_softc *sc, struct mbuf *m, int idx) { int total_len; struct aue_chain *c; usbd_status err; c = &sc->aue_cdata.aue_tx_chain[idx]; /* * Copy the mbuf data into a contiguous buffer, leaving two * bytes at the beginning to hold the frame length. */ m_copydata(m, 0, m->m_pkthdr.len, c->aue_buf + 2); c->aue_mbuf = m; total_len = m->m_pkthdr.len + 2; /* * The ADMtek documentation says that the packet length is * supposed to be specified in the first two bytes of the * transfer, however it actually seems to ignore this info * and base the frame size on the bulk transfer length. */ c->aue_buf[0] = (u_int8_t)m->m_pkthdr.len; c->aue_buf[1] = (u_int8_t)(m->m_pkthdr.len >> 8); usbd_setup_xfer(c->aue_xfer, sc->aue_ep[AUE_ENDPT_TX], c, c->aue_buf, total_len, USBD_FORCE_SHORT_XFER, 10000, aue_txeof); /* Transmit */ err = usbd_transfer(c->aue_xfer); if (err != USBD_IN_PROGRESS) { aue_stop(sc); return (EIO); } sc->aue_cdata.aue_tx_cnt++; return (0); } static void aue_start(struct ifnet *ifp) { struct aue_softc *sc = ifp->if_softc; struct mbuf *m_head = NULL; AUE_LOCK(sc); if (!sc->aue_link) { AUE_UNLOCK(sc); return; } if (ifp->if_flags & IFF_OACTIVE) { AUE_UNLOCK(sc); return; } m_head = ifq_poll(&ifp->if_snd); if (m_head == NULL) { AUE_UNLOCK(sc); return; } if (aue_encap(sc, m_head, 0)) { ifp->if_flags |= IFF_OACTIVE; AUE_UNLOCK(sc); return; } ifq_dequeue(&ifp->if_snd, m_head); /* * If there's a BPF listener, bounce a copy of this frame * to him. */ 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; AUE_UNLOCK(sc); return; } static void aue_init(void *xsc) { struct aue_softc *sc = xsc; struct ifnet *ifp = &sc->arpcom.ac_if; struct mii_data *mii = GET_MII(sc); struct aue_chain *c; usbd_status err; int i; AUE_LOCK(sc); if (ifp->if_flags & IFF_RUNNING) { AUE_UNLOCK(sc); return; } /* * Cancel pending I/O and free all RX/TX buffers. */ aue_reset(sc); /* Set MAC address */ for (i = 0; i < ETHER_ADDR_LEN; i++) aue_csr_write_1(sc, AUE_PAR0 + i, sc->arpcom.ac_enaddr[i]); /* If we want promiscuous mode, set the allframes bit. */ if (ifp->if_flags & IFF_PROMISC) AUE_SETBIT(sc, AUE_CTL2, AUE_CTL2_RX_PROMISC); else AUE_CLRBIT(sc, AUE_CTL2, AUE_CTL2_RX_PROMISC); /* Init TX ring. */ if (aue_tx_list_init(sc) == ENOBUFS) { if_printf(&sc->arpcom.ac_if, "tx list init failed\n"); AUE_UNLOCK(sc); return; } /* Init RX ring. */ if (aue_rx_list_init(sc) == ENOBUFS) { if_printf(&sc->arpcom.ac_if, "rx list init failed\n"); AUE_UNLOCK(sc); return; } #ifdef AUE_INTR_PIPE sc->aue_cdata.aue_ibuf = kmalloc(AUE_INTR_PKTLEN, M_USBDEV, M_WAITOK); #endif /* Load the multicast filter. */ aue_setmulti(sc); /* Enable RX and TX */ aue_csr_write_1(sc, AUE_CTL0, AUE_CTL0_RXSTAT_APPEND | AUE_CTL0_RX_ENB); AUE_SETBIT(sc, AUE_CTL0, AUE_CTL0_TX_ENB); AUE_SETBIT(sc, AUE_CTL2, AUE_CTL2_EP3_CLR); mii_mediachg(mii); /* Open RX and TX pipes. */ err = usbd_open_pipe(sc->aue_iface, sc->aue_ed[AUE_ENDPT_RX], USBD_EXCLUSIVE_USE, &sc->aue_ep[AUE_ENDPT_RX]); if (err) { if_printf(&sc->arpcom.ac_if, "open rx pipe failed: %s\n", usbd_errstr(err)); AUE_UNLOCK(sc); return; } err = usbd_open_pipe(sc->aue_iface, sc->aue_ed[AUE_ENDPT_TX], USBD_EXCLUSIVE_USE, &sc->aue_ep[AUE_ENDPT_TX]); if (err) { if_printf(&sc->arpcom.ac_if, "open tx pipe failed: %s\n", usbd_errstr(err)); AUE_UNLOCK(sc); return; } #ifdef AUE_INTR_PIPE err = usbd_open_pipe_intr(sc->aue_iface, sc->aue_ed[AUE_ENDPT_INTR], USBD_SHORT_XFER_OK, &sc->aue_ep[AUE_ENDPT_INTR], sc, sc->aue_cdata.aue_ibuf, AUE_INTR_PKTLEN, aue_intr, AUE_INTR_INTERVAL); if (err) { if_printf(&sc->arpcom.ac_if, "open intr pipe failed: %s\n", usbd_errstr(err)); AUE_UNLOCK(sc); return; } #endif /* Start up the receive pipe. */ for (i = 0; i < AUE_RX_LIST_CNT; i++) { c = &sc->aue_cdata.aue_rx_chain[i]; usbd_setup_xfer(c->aue_xfer, sc->aue_ep[AUE_ENDPT_RX], c, mtod(c->aue_mbuf, char *), AUE_BUFSZ, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, aue_rxeof); usbd_transfer(c->aue_xfer); } ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; callout_reset(&sc->aue_stat_timer, hz, aue_tick, sc); AUE_UNLOCK(sc); return; } /* * Set media options. */ static int aue_ifmedia_upd(struct ifnet *ifp) { struct aue_softc *sc = ifp->if_softc; struct mii_data *mii = GET_MII(sc); sc->aue_link = 0; if (mii->mii_instance) { struct mii_softc *miisc; LIST_FOREACH(miisc, &mii->mii_phys, mii_list) mii_phy_reset(miisc); } mii_mediachg(mii); return (0); } /* * Report current media status. */ static void aue_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) { struct aue_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; return; } static int aue_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr) { struct aue_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *)data; struct mii_data *mii; int error = 0; AUE_LOCK(sc); switch(command) { case SIOCSIFFLAGS: if (ifp->if_flags & IFF_UP) { if (ifp->if_flags & IFF_RUNNING && ifp->if_flags & IFF_PROMISC && !(sc->aue_if_flags & IFF_PROMISC)) { AUE_SETBIT(sc, AUE_CTL2, AUE_CTL2_RX_PROMISC); } else if (ifp->if_flags & IFF_RUNNING && !(ifp->if_flags & IFF_PROMISC) && sc->aue_if_flags & IFF_PROMISC) { AUE_CLRBIT(sc, AUE_CTL2, AUE_CTL2_RX_PROMISC); } else if (!(ifp->if_flags & IFF_RUNNING)) aue_init(sc); } else { if (ifp->if_flags & IFF_RUNNING) aue_stop(sc); } sc->aue_if_flags = ifp->if_flags; error = 0; break; case SIOCADDMULTI: case SIOCDELMULTI: aue_setmulti(sc); error = 0; break; case SIOCGIFMEDIA: case SIOCSIFMEDIA: mii = GET_MII(sc); error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); break; default: error = ether_ioctl(ifp, command, data); break; } AUE_UNLOCK(sc); return (error); } static void aue_watchdog(struct ifnet *ifp) { struct aue_softc *sc = ifp->if_softc; struct aue_chain *c; usbd_status stat; AUE_LOCK(sc); ifp->if_oerrors++; if_printf(ifp, "watchdog timeout\n"); c = &sc->aue_cdata.aue_tx_chain[0]; usbd_get_xfer_status(c->aue_xfer, NULL, NULL, NULL, &stat); aue_txeof(c->aue_xfer, c, stat); if (!ifq_is_empty(&ifp->if_snd)) aue_start(ifp); AUE_UNLOCK(sc); return; } /* * Stop the adapter and free any mbufs allocated to the * RX and TX lists. */ static void aue_stop(struct aue_softc *sc) { usbd_status err; struct ifnet *ifp; int i; AUE_LOCK(sc); ifp = &sc->arpcom.ac_if; ifp->if_timer = 0; aue_csr_write_1(sc, AUE_CTL0, 0); aue_csr_write_1(sc, AUE_CTL1, 0); aue_reset(sc); callout_stop(&sc->aue_stat_timer); /* Stop transfers. */ if (sc->aue_ep[AUE_ENDPT_RX] != NULL) { err = usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_RX]); if (err) { if_printf(ifp, "abort rx pipe failed: %s\n", usbd_errstr(err)); } err = usbd_close_pipe(sc->aue_ep[AUE_ENDPT_RX]); if (err) { if_printf(ifp, "close rx pipe failed: %s\n", usbd_errstr(err)); } sc->aue_ep[AUE_ENDPT_RX] = NULL; } if (sc->aue_ep[AUE_ENDPT_TX] != NULL) { err = usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_TX]); if (err) { if_printf(ifp, "abort tx pipe failed: %s\n", usbd_errstr(err)); } err = usbd_close_pipe(sc->aue_ep[AUE_ENDPT_TX]); if (err) { if_printf(ifp, "close tx pipe failed: %s\n", usbd_errstr(err)); } sc->aue_ep[AUE_ENDPT_TX] = NULL; } #ifdef AUE_INTR_PIPE if (sc->aue_ep[AUE_ENDPT_INTR] != NULL) { err = usbd_abort_pipe(sc->aue_ep[AUE_ENDPT_INTR]); if (err) { if_printf(ifp, "abort intr pipe failed: %s\n", usbd_errstr(err)); } err = usbd_close_pipe(sc->aue_ep[AUE_ENDPT_INTR]); if (err) { if_printf(ifp, "close intr pipe failed: %s\n", usbd_errstr(err)); } sc->aue_ep[AUE_ENDPT_INTR] = NULL; } #endif /* Free RX resources. */ for (i = 0; i < AUE_RX_LIST_CNT; i++) { if (sc->aue_cdata.aue_rx_chain[i].aue_buf != NULL) { kfree(sc->aue_cdata.aue_rx_chain[i].aue_buf, M_USBDEV); sc->aue_cdata.aue_rx_chain[i].aue_buf = NULL; } if (sc->aue_cdata.aue_rx_chain[i].aue_mbuf != NULL) { m_freem(sc->aue_cdata.aue_rx_chain[i].aue_mbuf); sc->aue_cdata.aue_rx_chain[i].aue_mbuf = NULL; } if (sc->aue_cdata.aue_rx_chain[i].aue_xfer != NULL) { usbd_free_xfer(sc->aue_cdata.aue_rx_chain[i].aue_xfer); sc->aue_cdata.aue_rx_chain[i].aue_xfer = NULL; } } /* Free TX resources. */ for (i = 0; i < AUE_TX_LIST_CNT; i++) { if (sc->aue_cdata.aue_tx_chain[i].aue_buf != NULL) { kfree(sc->aue_cdata.aue_tx_chain[i].aue_buf, M_USBDEV); sc->aue_cdata.aue_tx_chain[i].aue_buf = NULL; } if (sc->aue_cdata.aue_tx_chain[i].aue_mbuf != NULL) { m_freem(sc->aue_cdata.aue_tx_chain[i].aue_mbuf); sc->aue_cdata.aue_tx_chain[i].aue_mbuf = NULL; } if (sc->aue_cdata.aue_tx_chain[i].aue_xfer != NULL) { usbd_free_xfer(sc->aue_cdata.aue_tx_chain[i].aue_xfer); sc->aue_cdata.aue_tx_chain[i].aue_xfer = NULL; } } #ifdef AUE_INTR_PIPE if (sc->aue_cdata.aue_ibuf != NULL) { kfree(sc->aue_cdata.aue_ibuf, M_USBDEV); sc->aue_cdata.aue_ibuf = NULL; } #endif sc->aue_link = 0; ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); AUE_UNLOCK(sc); return; } /* * Stop all chip I/O so that the kernel's probe routines don't * get confused by errant DMAs when rebooting. */ static void aue_shutdown(device_t dev) { struct aue_softc *sc; sc = device_get_softc(dev); sc->aue_dying++; AUE_LOCK(sc); aue_reset(sc); aue_stop(sc); AUE_UNLOCK(sc); return; }