diff options
Diffstat (limited to 'sys/dev/usb/if_axe.c')
| -rw-r--r-- | sys/dev/usb/if_axe.c | 1192 |
1 files changed, 1192 insertions, 0 deletions
diff --git a/sys/dev/usb/if_axe.c b/sys/dev/usb/if_axe.c new file mode 100644 index 0000000..5c243fa --- /dev/null +++ b/sys/dev/usb/if_axe.c @@ -0,0 +1,1192 @@ +/* + * Copyright (c) 1997, 1998, 1999, 2000-2003 + * Bill Paul <wpaul@windriver.com>. 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. + * + * $FreeBSD$ + */ + +/* + * ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the + * LinkSys USB200M and various other adapters. + * + * Manuals available from: + * http://www.asix.com.tw/datasheet/mac/Ax88172.PDF + * Note: you need the manual for the AX88170 chip (USB 1.x ethernet + * controller) to find the definitions for the RX control register. + * http://www.asix.com.tw/datasheet/mac/Ax88170.PDF + * + * Written by Bill Paul <wpaul@windriver.com> + * Senior Engineer + * Wind River Systems + */ + +/* + * The AX88172 provides USB ethernet supports at 10 and 100Mbps. + * It uses an external PHY (reference designs use a RealTek chip), + * and has a 64-bit multicast hash filter. There is some information + * missing from the manual which one needs to know in order to make + * the chip function: + * + * - You must set bit 7 in the RX control register, otherwise the + * chip won't receive any packets. + * - You must initialize all 3 IPG registers, or you won't be able + * to send any packets. + * + * Note that this device appears to only support loading the station + * address via autload from the EEPROM (i.e. there's no way to manaully + * set it). + * + * (Adam Weinberger wanted me to name this driver if_gir.c.) + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/sockio.h> +#include <sys/mbuf.h> +#include <sys/malloc.h> +#include <sys/kernel.h> +#include <sys/socket.h> + +#include <net/if.h> +#include <net/if_arp.h> +#include <net/ethernet.h> +#include <net/if_dl.h> +#include <net/if_media.h> + +#include <net/bpf.h> + +#include <sys/bus.h> + +#include <dev/usb/usb.h> +#include <dev/usb/usbdi.h> +#include <dev/usb/usbdi_util.h> +#include <dev/usb/usbdivar.h> +#include <dev/usb/usbdevs.h> +#include <dev/usb/usb_ethersubr.h> + +#include <dev/mii/mii.h> +#include <dev/mii/miivar.h> + +/* "controller miibus0" required. See GENERIC if you get errors here. */ +#include "miibus_if.h" + +#include <dev/usb/if_axereg.h> + +#ifndef lint +static const char rcsid[] = + "$FreeBSD$"; +#endif + +/* + * Various supported device vendors/products. + */ +Static struct axe_type axe_devs[] = { + { USB_VENDOR_ASIX, USB_PRODUCT_ASIX_AX88172 }, + { 0, 0 } +}; + +Static struct usb_qdat axe_qdat; + +Static int axe_match(device_ptr_t); +Static int axe_attach(device_ptr_t); +Static int axe_detach(device_ptr_t); + +Static int axe_tx_list_init(struct axe_softc *); +Static int axe_rx_list_init(struct axe_softc *); +Static int axe_newbuf(struct axe_softc *, struct axe_chain *, struct mbuf *); +Static int axe_encap(struct axe_softc *, struct mbuf *, int); +Static void axe_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status); +Static void axe_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status); +Static void axe_tick(void *); +Static void axe_rxstart(struct ifnet *); +Static void axe_start(struct ifnet *); +Static int axe_ioctl(struct ifnet *, u_long, caddr_t); +Static void axe_init(void *); +Static void axe_stop(struct axe_softc *); +Static void axe_watchdog(struct ifnet *); +Static void axe_shutdown(device_ptr_t); +Static int axe_miibus_readreg(device_ptr_t, int, int); +Static int axe_miibus_writereg(device_ptr_t, int, int, int); +Static void axe_miibus_statchg(device_ptr_t); +Static int axe_cmd(struct axe_softc *, int, int, int, void *); +Static int axe_ifmedia_upd(struct ifnet *); +Static void axe_ifmedia_sts(struct ifnet *, struct ifmediareq *); + +Static void axe_setmulti(struct axe_softc *); +Static u_int32_t axe_crc(caddr_t); + +Static device_method_t axe_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, axe_match), + DEVMETHOD(device_attach, axe_attach), + DEVMETHOD(device_detach, axe_detach), + DEVMETHOD(device_shutdown, axe_shutdown), + + /* bus interface */ + DEVMETHOD(bus_print_child, bus_generic_print_child), + DEVMETHOD(bus_driver_added, bus_generic_driver_added), + + /* MII interface */ + DEVMETHOD(miibus_readreg, axe_miibus_readreg), + DEVMETHOD(miibus_writereg, axe_miibus_writereg), + DEVMETHOD(miibus_statchg, axe_miibus_statchg), + + { 0, 0 } +}; + +Static driver_t axe_driver = { + "axe", + axe_methods, + sizeof(struct axe_softc) +}; + +Static devclass_t axe_devclass; + +DRIVER_MODULE(axe, uhub, axe_driver, axe_devclass, usbd_driver_load, 0); +DRIVER_MODULE(miibus, axe, miibus_driver, miibus_devclass, 0, 0); +MODULE_DEPEND(axe, usb, 1, 1, 1); +MODULE_DEPEND(axe, miibus, 1, 1, 1); + +Static int +axe_cmd(struct axe_softc *sc, int cmd, int index, int val, void *buf) +{ + usb_device_request_t req; + usbd_status err; + + if (sc->axe_dying) + return(0); + + if (AXE_CMD_DIR(cmd)) + req.bmRequestType = UT_WRITE_VENDOR_DEVICE; + else + req.bmRequestType = UT_READ_VENDOR_DEVICE; + req.bRequest = AXE_CMD_CMD(cmd); + USETW(req.wValue, val); + USETW(req.wIndex, index); + USETW(req.wLength, AXE_CMD_LEN(cmd)); + + err = usbd_do_request(sc->axe_udev, &req, buf); + + if (err) + return(-1); + + return(0); +} + +Static int +axe_miibus_readreg(device_ptr_t dev, int phy, int reg) +{ + struct axe_softc *sc = USBGETSOFTC(dev); + usbd_status err; + u_int16_t val; + + if (sc->axe_dying) + return(0); + + /* + * The chip tells us the MII address of any supported + * PHYs attached to the chip, so only read from those. + */ + + if (sc->axe_phyaddrs[0] != AXE_NOPHY && phy != sc->axe_phyaddrs[0]) + return (0); + + if (sc->axe_phyaddrs[1] != AXE_NOPHY && phy != sc->axe_phyaddrs[1]) + return (0); + + AXE_LOCK(sc); + axe_cmd(sc, AXE_CMD_MII_OPMODE_SW, 0, 0, NULL); + err = axe_cmd(sc, AXE_CMD_MII_READ_REG, reg, phy, (void *)&val); + axe_cmd(sc, AXE_CMD_MII_OPMODE_HW, 0, 0, NULL); + AXE_UNLOCK(sc); + + if (err) { + printf("axe%d: read PHY failed\n", sc->axe_unit); + return(-1); + } + + return (val); +} + +Static int +axe_miibus_writereg(device_ptr_t dev, int phy, int reg, int val) +{ + struct axe_softc *sc = USBGETSOFTC(dev); + usbd_status err; + + if (sc->axe_dying) + return(0); + + AXE_LOCK(sc); + axe_cmd(sc, AXE_CMD_MII_OPMODE_SW, 0, 0, NULL); + err = axe_cmd(sc, AXE_CMD_MII_WRITE_REG, reg, phy, (void *)&val); + axe_cmd(sc, AXE_CMD_MII_OPMODE_HW, 0, 0, NULL); + AXE_UNLOCK(sc); + + if (err) { + printf("axe%d: write PHY failed\n", sc->axe_unit); + return(-1); + } + + return (0); +} + +Static void +axe_miibus_statchg(device_ptr_t dev) +{ +#ifdef notdef + struct axe_softc *sc = USBGETSOFTC(dev); + struct mii_data *mii = GET_MII(sc); +#endif + /* doesn't seem to be necessary */ + + return; +} + +/* + * Set media options. + */ +Static int +axe_ifmedia_upd(struct ifnet *ifp) +{ + struct axe_softc *sc = ifp->if_softc; + struct mii_data *mii = GET_MII(sc); + + sc->axe_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 +axe_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) +{ + struct axe_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 u_int32_t +axe_crc(caddr_t addr) +{ + u_int32_t crc, carry; + int i, j; + u_int8_t c; + + /* Compute CRC for the address value. */ + crc = 0xFFFFFFFF; /* initial value */ + + for (i = 0; i < 6; i++) { + c = *(addr + i); + for (j = 0; j < 8; j++) { + carry = ((crc & 0x80000000) ? 1 : 0) ^ (c & 0x01); + crc <<= 1; + c >>= 1; + if (carry) + crc = (crc ^ 0x04c11db6) | carry; + } + } + + /* return the filter bit position */ + return((crc >> 26) & 0x0000003F); +} + +Static void +axe_setmulti(struct axe_softc *sc) +{ + struct ifnet *ifp; + struct ifmultiaddr *ifma; + u_int32_t h = 0; + u_int16_t rxmode; + u_int8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; + + ifp = &sc->arpcom.ac_if; + + AXE_LOCK(sc); + axe_cmd(sc, AXE_CMD_RXCTL_READ, 0, 0, (void *)&rxmode); + + if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { + rxmode |= AXE_RXCMD_ALLMULTI; + axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, rxmode, NULL); + AXE_UNLOCK(sc); + return; + } else + rxmode &= ~AXE_RXCMD_ALLMULTI; + + TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { + if (ifma->ifma_addr->sa_family != AF_LINK) + continue; + h = axe_crc(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); + hashtbl[h / 8] |= 1 << (h % 8); + } + + axe_cmd(sc, AXE_CMD_WRITE_MCAST, 0, 0, (void *)&hashtbl); + axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, rxmode, NULL); + AXE_UNLOCK(sc); + + return; +} + +Static void +axe_reset(struct axe_softc *sc) +{ + if (sc->axe_dying) + return; + + if (usbd_set_config_no(sc->axe_udev, AXE_CONFIG_NO, 1) || + usbd_device2interface_handle(sc->axe_udev, 0 /*AXE_IFACE_IDX*/, + &sc->axe_iface)) { + printf("axe%d: getting interface handle failed\n", + sc->axe_unit); + } + + /* Wait a little while for the chip to get its brains in order. */ + DELAY(1000); + return; +} + +/* + * Probe for a AX88172 chip. + */ +USB_MATCH(axe) +{ + USB_MATCH_START(axe, uaa); + struct axe_type *t; + + if (!uaa->iface) + return(UMATCH_NONE); + + t = axe_devs; + while(t->axe_vid) { + if (uaa->vendor == t->axe_vid && + uaa->product == t->axe_did) { + return(UMATCH_VENDOR_PRODUCT); + } + t++; + } + + return(UMATCH_NONE); +} + +/* + * Attach the interface. Allocate softc structures, do ifmedia + * setup and ethernet/BPF attach. + */ +USB_ATTACH(axe) +{ + USB_ATTACH_START(axe, sc, uaa); + char devinfo[1024]; + u_char eaddr[ETHER_ADDR_LEN]; + struct ifnet *ifp; + usb_interface_descriptor_t *id; + usb_endpoint_descriptor_t *ed; + int i; + + bzero(sc, sizeof(struct axe_softc)); + sc->axe_iface = uaa->iface; + sc->axe_udev = uaa->device; + sc->axe_dev = self; + sc->axe_unit = device_get_unit(self); + + if (usbd_set_config_no(sc->axe_udev, AXE_CONFIG_NO, 1)) { + printf("axe%d: getting interface handle failed\n", + sc->axe_unit); + USB_ATTACH_ERROR_RETURN; + } + + id = usbd_get_interface_descriptor(uaa->iface); + + usbd_devinfo(uaa->device, 0, devinfo); + device_set_desc_copy(self, devinfo); + printf("%s: %s\n", USBDEVNAME(self), devinfo); + + /* Find endpoints. */ + for (i = 0; i < id->bNumEndpoints; i++) { + ed = usbd_interface2endpoint_descriptor(uaa->iface, i); + if (!ed) { + printf("axe%d: couldn't get ep %d\n", + sc->axe_unit, i); + USB_ATTACH_ERROR_RETURN; + } + if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && + UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { + sc->axe_ed[AXE_ENDPT_RX] = ed->bEndpointAddress; + } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && + UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { + sc->axe_ed[AXE_ENDPT_TX] = ed->bEndpointAddress; + } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && + UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { + sc->axe_ed[AXE_ENDPT_INTR] = ed->bEndpointAddress; + } + } + + mtx_init(&sc->axe_mtx, device_get_nameunit(self), MTX_NETWORK_LOCK, + MTX_DEF | MTX_RECURSE); + AXE_LOCK(sc); + + /* + * Get station address. + */ + axe_cmd(sc, AXE_CMD_READ_NODEID, 0, 0, &eaddr); + + /* + * Load IPG values and PHY indexes. + */ + axe_cmd(sc, AXE_CMD_READ_IPG012, 0, 0, (void *)&sc->axe_ipgs); + axe_cmd(sc, AXE_CMD_READ_PHYID, 0, 0, (void *)&sc->axe_phyaddrs); + + /* + * An ASIX chip was detected. Inform the world. + */ + printf("axe%d: Ethernet address: %6D\n", sc->axe_unit, eaddr, ":"); + + bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); + + ifp = &sc->arpcom.ac_if; + ifp->if_softc = sc; + ifp->if_unit = sc->axe_unit; + ifp->if_name = "axe"; + ifp->if_mtu = ETHERMTU; + ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; + ifp->if_ioctl = axe_ioctl; + ifp->if_output = ether_output; + ifp->if_start = axe_start; + ifp->if_watchdog = axe_watchdog; + ifp->if_init = axe_init; + ifp->if_baudrate = 10000000; + ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; + + axe_qdat.ifp = ifp; + axe_qdat.if_rxstart = axe_rxstart; + + if (mii_phy_probe(self, &sc->axe_miibus, + axe_ifmedia_upd, axe_ifmedia_sts)) { + printf("axe%d: MII without any PHY!\n", sc->axe_unit); + AXE_UNLOCK(sc); + mtx_destroy(&sc->axe_mtx); + USB_ATTACH_ERROR_RETURN; + } + + /* + * Call MI attach routine. + */ + + ether_ifattach(ifp, eaddr); + callout_handle_init(&sc->axe_stat_ch); + usb_register_netisr(); + + sc->axe_dying = 0; + + AXE_UNLOCK(sc); + + USB_ATTACH_SUCCESS_RETURN; +} + +Static int +axe_detach(device_ptr_t dev) +{ + struct axe_softc *sc; + struct ifnet *ifp; + + sc = device_get_softc(dev); + AXE_LOCK(sc); + ifp = &sc->arpcom.ac_if; + + sc->axe_dying = 1; + untimeout(axe_tick, sc, sc->axe_stat_ch); + ether_ifdetach(ifp); + + if (sc->axe_ep[AXE_ENDPT_TX] != NULL) + usbd_abort_pipe(sc->axe_ep[AXE_ENDPT_TX]); + if (sc->axe_ep[AXE_ENDPT_RX] != NULL) + usbd_abort_pipe(sc->axe_ep[AXE_ENDPT_RX]); + if (sc->axe_ep[AXE_ENDPT_INTR] != NULL) + usbd_abort_pipe(sc->axe_ep[AXE_ENDPT_INTR]); + + AXE_UNLOCK(sc); + mtx_destroy(&sc->axe_mtx); + + return(0); +} + +/* + * Initialize an RX descriptor and attach an MBUF cluster. + */ +Static int +axe_newbuf(struct axe_softc *sc, struct axe_chain *c, struct mbuf *m) +{ + struct mbuf *m_new = NULL; + + if (m == NULL) { + m_new = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); + if (m_new == NULL) { + printf("axe%d: no memory for rx list " + "-- packet dropped!\n", sc->axe_unit); + 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->axe_mbuf = m_new; + + return(0); +} + +Static int +axe_rx_list_init(struct axe_softc *sc) +{ + struct axe_cdata *cd; + struct axe_chain *c; + int i; + + cd = &sc->axe_cdata; + for (i = 0; i < AXE_RX_LIST_CNT; i++) { + c = &cd->axe_rx_chain[i]; + c->axe_sc = sc; + c->axe_idx = i; + if (axe_newbuf(sc, c, NULL) == ENOBUFS) + return(ENOBUFS); + if (c->axe_xfer == NULL) { + c->axe_xfer = usbd_alloc_xfer(sc->axe_udev); + if (c->axe_xfer == NULL) + return(ENOBUFS); + } + } + + return(0); +} + +Static int +axe_tx_list_init(struct axe_softc *sc) +{ + struct axe_cdata *cd; + struct axe_chain *c; + int i; + + cd = &sc->axe_cdata; + for (i = 0; i < AXE_TX_LIST_CNT; i++) { + c = &cd->axe_tx_chain[i]; + c->axe_sc = sc; + c->axe_idx = i; + c->axe_mbuf = NULL; + if (c->axe_xfer == NULL) { + c->axe_xfer = usbd_alloc_xfer(sc->axe_udev); + if (c->axe_xfer == NULL) + return(ENOBUFS); + } + c->axe_buf = malloc(AXE_BUFSZ, M_USBDEV, M_NOWAIT); + if (c->axe_buf == NULL) + return(ENOBUFS); + } + + return(0); +} + +Static void +axe_rxstart(struct ifnet *ifp) +{ + struct axe_softc *sc; + struct axe_chain *c; + + sc = ifp->if_softc; + AXE_LOCK(sc); + c = &sc->axe_cdata.axe_rx_chain[sc->axe_cdata.axe_rx_prod]; + + if (axe_newbuf(sc, c, NULL) == ENOBUFS) { + ifp->if_ierrors++; + AXE_UNLOCK(sc); + return; + } + + /* Setup new transfer. */ + usbd_setup_xfer(c->axe_xfer, sc->axe_ep[AXE_ENDPT_RX], + c, mtod(c->axe_mbuf, char *), AXE_BUFSZ, USBD_SHORT_XFER_OK, + USBD_NO_TIMEOUT, axe_rxeof); + usbd_transfer(c->axe_xfer); + AXE_UNLOCK(sc); + + return; +} + +/* + * A frame has been uploaded: pass the resulting mbuf chain up to + * the higher level protocols. + */ +Static void +axe_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) +{ + struct axe_softc *sc; + struct axe_chain *c; + struct mbuf *m; + struct ifnet *ifp; + int total_len = 0; + + c = priv; + sc = c->axe_sc; + AXE_LOCK(sc); + ifp = &sc->arpcom.ac_if; + + if (!(ifp->if_flags & IFF_RUNNING)) { + AXE_UNLOCK(sc); + return; + } + + if (status != USBD_NORMAL_COMPLETION) { + if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { + AXE_UNLOCK(sc); + return; + } + if (usbd_ratecheck(&sc->axe_rx_notice)) + printf("axe%d: usb error on rx: %s\n", sc->axe_unit, + usbd_errstr(status)); + if (status == USBD_STALLED) + usbd_clear_endpoint_stall(sc->axe_ep[AXE_ENDPT_RX]); + goto done; + } + + usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); + + m = c->axe_mbuf; + + if (total_len < sizeof(struct ether_header)) { + ifp->if_ierrors++; + goto done; + } + + ifp->if_ipackets++; + m->m_pkthdr.rcvif = (struct ifnet *)&axe_qdat; + m->m_pkthdr.len = m->m_len = total_len; + + /* Put the packet on the special USB input queue. */ + usb_ether_input(m); + AXE_UNLOCK(sc); + + return; +done: + /* Setup new transfer. */ + usbd_setup_xfer(c->axe_xfer, sc->axe_ep[AXE_ENDPT_RX], + c, mtod(c->axe_mbuf, char *), AXE_BUFSZ, USBD_SHORT_XFER_OK, + USBD_NO_TIMEOUT, axe_rxeof); + usbd_transfer(c->axe_xfer); + AXE_UNLOCK(sc); + + return; +} + +/* + * A frame was downloaded to the chip. It's safe for us to clean up + * the list buffers. + */ + +Static void +axe_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) +{ + struct axe_softc *sc; + struct axe_chain *c; + struct ifnet *ifp; + usbd_status err; + + c = priv; + sc = c->axe_sc; + AXE_LOCK(sc); + ifp = &sc->arpcom.ac_if; + + if (status != USBD_NORMAL_COMPLETION) { + if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { + AXE_UNLOCK(sc); + return; + } + printf("axe%d: usb error on tx: %s\n", sc->axe_unit, + usbd_errstr(status)); + if (status == USBD_STALLED) + usbd_clear_endpoint_stall(sc->axe_ep[AXE_ENDPT_TX]); + AXE_UNLOCK(sc); + return; + } + + ifp->if_timer = 0; + ifp->if_flags &= ~IFF_OACTIVE; + usbd_get_xfer_status(c->axe_xfer, NULL, NULL, NULL, &err); + + if (c->axe_mbuf != NULL) { + c->axe_mbuf->m_pkthdr.rcvif = ifp; + usb_tx_done(c->axe_mbuf); + c->axe_mbuf = NULL; + } + + if (err) + ifp->if_oerrors++; + else + ifp->if_opackets++; + + AXE_UNLOCK(sc); + + return; +} + +Static void +axe_tick(void *xsc) +{ + struct axe_softc *sc; + struct ifnet *ifp; + struct mii_data *mii; + + sc = xsc; + + if (sc == NULL) + return; + + AXE_LOCK(sc); + + ifp = &sc->arpcom.ac_if; + mii = GET_MII(sc); + if (mii == NULL) { + AXE_UNLOCK(sc); + return; + } + + mii_tick(mii); + if (!sc->axe_link && mii->mii_media_status & IFM_ACTIVE && + IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { + sc->axe_link++; + if (ifp->if_snd.ifq_head != NULL) + axe_start(ifp); + } + + sc->axe_stat_ch = timeout(axe_tick, sc, hz); + + AXE_UNLOCK(sc); + + return; +} + +Static int +axe_encap(struct axe_softc *sc, struct mbuf *m, int idx) +{ + struct axe_chain *c; + usbd_status err; + + c = &sc->axe_cdata.axe_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->axe_buf); + c->axe_mbuf = m; + + usbd_setup_xfer(c->axe_xfer, sc->axe_ep[AXE_ENDPT_TX], + c, c->axe_buf, m->m_pkthdr.len, 0, 10000, axe_txeof); + + /* Transmit */ + err = usbd_transfer(c->axe_xfer); + if (err != USBD_IN_PROGRESS) { + axe_stop(sc); + return(EIO); + } + + sc->axe_cdata.axe_tx_cnt++; + + return(0); +} + +Static void +axe_start(struct ifnet *ifp) +{ + struct axe_softc *sc; + struct mbuf *m_head = NULL; + + sc = ifp->if_softc; + AXE_LOCK(sc); + + if (!sc->axe_link) { + AXE_UNLOCK(sc); + return; + } + + if (ifp->if_flags & IFF_OACTIVE) { + AXE_UNLOCK(sc); + return; + } + + IF_DEQUEUE(&ifp->if_snd, m_head); + if (m_head == NULL) { + AXE_UNLOCK(sc); + return; + } + + if (axe_encap(sc, m_head, 0)) { + IF_PREPEND(&ifp->if_snd, m_head); + ifp->if_flags |= IFF_OACTIVE; + AXE_UNLOCK(sc); + return; + } + + /* + * 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; + AXE_UNLOCK(sc); + + return; +} + +Static void +axe_init(void *xsc) +{ + struct axe_softc *sc = xsc; + struct ifnet *ifp = &sc->arpcom.ac_if; + struct axe_chain *c; + usbd_status err; + int i; + int rxmode; + + if (ifp->if_flags & IFF_RUNNING) + return; + + AXE_LOCK(sc); + + /* + * Cancel pending I/O and free all RX/TX buffers. + */ + + axe_reset(sc); + +#ifdef notdef + /* Set MAC address */ + axe_mac(sc, sc->arpcom.ac_enaddr, 1); +#endif + + /* Enable RX logic. */ + + /* Init TX ring. */ + if (axe_tx_list_init(sc) == ENOBUFS) { + printf("axe%d: tx list init failed\n", sc->axe_unit); + AXE_UNLOCK(sc); + return; + } + + /* Init RX ring. */ + if (axe_rx_list_init(sc) == ENOBUFS) { + printf("axe%d: rx list init failed\n", sc->axe_unit); + AXE_UNLOCK(sc); + return; + } + + /* Set transmitter IPG values */ + axe_cmd(sc, AXE_CMD_WRITE_IPG0, 0, sc->axe_ipgs[0], NULL); + axe_cmd(sc, AXE_CMD_WRITE_IPG1, 0, sc->axe_ipgs[1], NULL); + axe_cmd(sc, AXE_CMD_WRITE_IPG2, 0, sc->axe_ipgs[2], NULL); + + /* Enable receiver, set RX mode */ + rxmode = AXE_RXCMD_UNICAST|AXE_RXCMD_MULTICAST|AXE_RXCMD_ENABLE; + + /* If we want promiscuous mode, set the allframes bit. */ + if (ifp->if_flags & IFF_PROMISC) + rxmode |= AXE_RXCMD_PROMISC; + + if (ifp->if_flags & IFF_BROADCAST) + rxmode |= AXE_RXCMD_BROADCAST; + + axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, rxmode, NULL); + + /* Load the multicast filter. */ + axe_setmulti(sc); + + /* Open RX and TX pipes. */ + err = usbd_open_pipe(sc->axe_iface, sc->axe_ed[AXE_ENDPT_RX], + USBD_EXCLUSIVE_USE, &sc->axe_ep[AXE_ENDPT_RX]); + if (err) { + printf("axe%d: open rx pipe failed: %s\n", + sc->axe_unit, usbd_errstr(err)); + AXE_UNLOCK(sc); + return; + } + + err = usbd_open_pipe(sc->axe_iface, sc->axe_ed[AXE_ENDPT_TX], + USBD_EXCLUSIVE_USE, &sc->axe_ep[AXE_ENDPT_TX]); + if (err) { + printf("axe%d: open tx pipe failed: %s\n", + sc->axe_unit, usbd_errstr(err)); + AXE_UNLOCK(sc); + return; + } + + /* Start up the receive pipe. */ + for (i = 0; i < AXE_RX_LIST_CNT; i++) { + c = &sc->axe_cdata.axe_rx_chain[i]; + usbd_setup_xfer(c->axe_xfer, sc->axe_ep[AXE_ENDPT_RX], + c, mtod(c->axe_mbuf, char *), AXE_BUFSZ, + USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, axe_rxeof); + usbd_transfer(c->axe_xfer); + } + + ifp->if_flags |= IFF_RUNNING; + ifp->if_flags &= ~IFF_OACTIVE; + + AXE_UNLOCK(sc); + + sc->axe_stat_ch = timeout(axe_tick, sc, hz); + + return; +} + +Static int +axe_ioctl(struct ifnet *ifp, u_long command, caddr_t data) +{ + struct axe_softc *sc = ifp->if_softc; + struct ifreq *ifr = (struct ifreq *)data; + struct mii_data *mii; + u_int16_t rxmode; + int error = 0; + + switch(command) { + case SIOCSIFFLAGS: + if (ifp->if_flags & IFF_UP) { + if (ifp->if_flags & IFF_RUNNING && + ifp->if_flags & IFF_PROMISC && + !(sc->axe_if_flags & IFF_PROMISC)) { + AXE_LOCK(sc); + axe_cmd(sc, AXE_CMD_RXCTL_READ, + 0, 0, (void *)&rxmode); + rxmode |= AXE_RXCMD_PROMISC; + axe_cmd(sc, AXE_CMD_RXCTL_WRITE, + 0, rxmode, NULL); + AXE_UNLOCK(sc); + axe_setmulti(sc); + } else if (ifp->if_flags & IFF_RUNNING && + !(ifp->if_flags & IFF_PROMISC) && + sc->axe_if_flags & IFF_PROMISC) { + AXE_LOCK(sc); + axe_cmd(sc, AXE_CMD_RXCTL_READ, + 0, 0, (void *)&rxmode); + rxmode &= ~AXE_RXCMD_PROMISC; + axe_cmd(sc, AXE_CMD_RXCTL_WRITE, + 0, rxmode, NULL); + AXE_UNLOCK(sc); + axe_setmulti(sc); + } else if (!(ifp->if_flags & IFF_RUNNING)) + axe_init(sc); + } else { + if (ifp->if_flags & IFF_RUNNING) + axe_stop(sc); + } + sc->axe_if_flags = ifp->if_flags; + error = 0; + break; + case SIOCADDMULTI: + case SIOCDELMULTI: + axe_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; + } + + AXE_UNLOCK(sc); + + return(error); +} + +Static void +axe_watchdog(struct ifnet *ifp) +{ + struct axe_softc *sc; + struct axe_chain *c; + usbd_status stat; + + sc = ifp->if_softc; + AXE_LOCK(sc); + + ifp->if_oerrors++; + printf("axe%d: watchdog timeout\n", sc->axe_unit); + + c = &sc->axe_cdata.axe_tx_chain[0]; + usbd_get_xfer_status(c->axe_xfer, NULL, NULL, NULL, &stat); + axe_txeof(c->axe_xfer, c, stat); + + AXE_UNLOCK(sc); + + if (ifp->if_snd.ifq_head != NULL) + axe_start(ifp); + + return; +} + +/* + * Stop the adapter and free any mbufs allocated to the + * RX and TX lists. + */ +Static void +axe_stop(struct axe_softc *sc) +{ + usbd_status err; + struct ifnet *ifp; + int i; + + AXE_LOCK(sc); + + axe_reset(sc); + + ifp = &sc->arpcom.ac_if; + ifp->if_timer = 0; + + untimeout(axe_tick, sc, sc->axe_stat_ch); + + /* Stop transfers. */ + if (sc->axe_ep[AXE_ENDPT_RX] != NULL) { + err = usbd_abort_pipe(sc->axe_ep[AXE_ENDPT_RX]); + if (err) { + printf("axe%d: abort rx pipe failed: %s\n", + sc->axe_unit, usbd_errstr(err)); + } + err = usbd_close_pipe(sc->axe_ep[AXE_ENDPT_RX]); + if (err) { + printf("axe%d: close rx pipe failed: %s\n", + sc->axe_unit, usbd_errstr(err)); + } + sc->axe_ep[AXE_ENDPT_RX] = NULL; + } + + if (sc->axe_ep[AXE_ENDPT_TX] != NULL) { + err = usbd_abort_pipe(sc->axe_ep[AXE_ENDPT_TX]); + if (err) { + printf("axe%d: abort tx pipe failed: %s\n", + sc->axe_unit, usbd_errstr(err)); + } + err = usbd_close_pipe(sc->axe_ep[AXE_ENDPT_TX]); + if (err) { + printf("axe%d: close tx pipe failed: %s\n", + sc->axe_unit, usbd_errstr(err)); + } + sc->axe_ep[AXE_ENDPT_TX] = NULL; + } + + if (sc->axe_ep[AXE_ENDPT_INTR] != NULL) { + err = usbd_abort_pipe(sc->axe_ep[AXE_ENDPT_INTR]); + if (err) { + printf("axe%d: abort intr pipe failed: %s\n", + sc->axe_unit, usbd_errstr(err)); + } + err = usbd_close_pipe(sc->axe_ep[AXE_ENDPT_INTR]); + if (err) { + printf("axe%d: close intr pipe failed: %s\n", + sc->axe_unit, usbd_errstr(err)); + } + sc->axe_ep[AXE_ENDPT_INTR] = NULL; + } + + /* Free RX resources. */ + for (i = 0; i < AXE_RX_LIST_CNT; i++) { + if (sc->axe_cdata.axe_rx_chain[i].axe_buf != NULL) { + free(sc->axe_cdata.axe_rx_chain[i].axe_buf, M_USBDEV); + sc->axe_cdata.axe_rx_chain[i].axe_buf = NULL; + } + if (sc->axe_cdata.axe_rx_chain[i].axe_mbuf != NULL) { + m_freem(sc->axe_cdata.axe_rx_chain[i].axe_mbuf); + sc->axe_cdata.axe_rx_chain[i].axe_mbuf = NULL; + } + if (sc->axe_cdata.axe_rx_chain[i].axe_xfer != NULL) { + usbd_free_xfer(sc->axe_cdata.axe_rx_chain[i].axe_xfer); + sc->axe_cdata.axe_rx_chain[i].axe_xfer = NULL; + } + } + + /* Free TX resources. */ + for (i = 0; i < AXE_TX_LIST_CNT; i++) { + if (sc->axe_cdata.axe_tx_chain[i].axe_buf != NULL) { + free(sc->axe_cdata.axe_tx_chain[i].axe_buf, M_USBDEV); + sc->axe_cdata.axe_tx_chain[i].axe_buf = NULL; + } + if (sc->axe_cdata.axe_tx_chain[i].axe_mbuf != NULL) { + m_freem(sc->axe_cdata.axe_tx_chain[i].axe_mbuf); + sc->axe_cdata.axe_tx_chain[i].axe_mbuf = NULL; + } + if (sc->axe_cdata.axe_tx_chain[i].axe_xfer != NULL) { + usbd_free_xfer(sc->axe_cdata.axe_tx_chain[i].axe_xfer); + sc->axe_cdata.axe_tx_chain[i].axe_xfer = NULL; + } + } + + ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); + sc->axe_link = 0; + AXE_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 +axe_shutdown(device_ptr_t dev) +{ + struct axe_softc *sc; + + sc = device_get_softc(dev); + + axe_stop(sc); + + return; +} |
