diff options
Diffstat (limited to 'sys/legacy/dev/usb/if_cdce.c')
| -rw-r--r-- | sys/legacy/dev/usb/if_cdce.c | 771 |
1 files changed, 771 insertions, 0 deletions
diff --git a/sys/legacy/dev/usb/if_cdce.c b/sys/legacy/dev/usb/if_cdce.c new file mode 100644 index 0000000..d41a54f --- /dev/null +++ b/sys/legacy/dev/usb/if_cdce.c @@ -0,0 +1,771 @@ +/* $NetBSD: if_cdce.c,v 1.4 2004/10/24 12:50:54 augustss Exp $ */ + +/* + * Copyright (c) 1997, 1998, 1999, 2000-2003 Bill Paul <wpaul@windriver.com> + * Copyright (c) 2003-2005 Craig Boston + * Copyright (c) 2004 Daniel Hartmeier + * 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, THE VOICES IN HIS HEAD OR + * THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * USB Communication Device Class (Ethernet Networking Control Model) + * http://www.usb.org/developers/devclass_docs/usbcdc11.pdf + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#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/module.h> +#include <sys/socket.h> +#include <sys/endian.h> + +#include <net/if.h> +#include <net/if_arp.h> +#include <net/ethernet.h> +#include <net/if_types.h> +#include <net/if_media.h> + +#include <net/bpf.h> + +#include <sys/bus.h> +#include <machine/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/usb_ethersubr.h> + +#include <dev/usb/usbcdc.h> +#include "usbdevs.h" +#include <dev/usb/if_cdcereg.h> + +static device_probe_t cdce_match; +static device_attach_t cdce_attach; +static device_detach_t cdce_detach; +static device_shutdown_t cdce_shutdown; + +static device_method_t cdce_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, cdce_match), + DEVMETHOD(device_attach, cdce_attach), + DEVMETHOD(device_detach, cdce_detach), + DEVMETHOD(device_shutdown, cdce_shutdown), + + { 0, 0 } +}; + +static driver_t cdce_driver = { + "cdce", + cdce_methods, + sizeof(struct cdce_softc) +}; + +static devclass_t cdce_devclass; + +DRIVER_MODULE(cdce, uhub, cdce_driver, cdce_devclass, usbd_driver_load, 0); +MODULE_VERSION(cdce, 0); +MODULE_DEPEND(cdce, usb, 1, 1, 1); + +static int cdce_encap(struct cdce_softc *, struct mbuf *, int); +static void cdce_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status); +static void cdce_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status); +static void cdce_start(struct ifnet *); +static int cdce_ioctl(struct ifnet *, u_long, caddr_t); +static void cdce_init(void *); +static void cdce_reset(struct cdce_softc *); +static void cdce_stop(struct cdce_softc *); +static void cdce_rxstart(struct ifnet *); +static int cdce_ifmedia_upd(struct ifnet *ifp); +static void cdce_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr); + +static const struct cdce_type cdce_devs[] = { + {{ USB_VENDOR_ACERLABS, USB_PRODUCT_ACERLABS_M5632 }, CDCE_NO_UNION }, + {{ USB_VENDOR_AMBIT, USB_PRODUCT_AMBIT_NTL_250 }, CDCE_NO_UNION }, + {{ USB_VENDOR_COMPAQ, USB_PRODUCT_COMPAQ_IPAQLINUX }, CDCE_NO_UNION }, + {{ USB_VENDOR_GMATE, USB_PRODUCT_GMATE_YP3X00 }, CDCE_NO_UNION }, + {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN }, CDCE_ZAURUS | CDCE_NO_UNION }, + {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN2 }, CDCE_ZAURUS | CDCE_NO_UNION }, + {{ USB_VENDOR_NETCHIP, USB_PRODUCT_NETCHIP_ETHERNETGADGET }, CDCE_NO_UNION }, + {{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501 }, CDCE_NO_UNION }, + {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500 }, CDCE_ZAURUS }, + {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600 }, CDCE_ZAURUS | CDCE_NO_UNION }, + {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SLA300 }, CDCE_ZAURUS | CDCE_NO_UNION }, + {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SLC700 }, CDCE_ZAURUS | CDCE_NO_UNION }, + {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SLC750 }, CDCE_ZAURUS | CDCE_NO_UNION }, +}; +#define cdce_lookup(v, p) ((const struct cdce_type *)usb_lookup(cdce_devs, v, p)) + +static int +cdce_match(device_t self) +{ + struct usb_attach_arg *uaa = device_get_ivars(self); + usb_interface_descriptor_t *id; + + if (uaa->iface == NULL) + return (UMATCH_NONE); + + id = usbd_get_interface_descriptor(uaa->iface); + if (id == NULL) + return (UMATCH_NONE); + + if (cdce_lookup(uaa->vendor, uaa->product) != NULL) + return (UMATCH_VENDOR_PRODUCT); + + if (id->bInterfaceClass == UICLASS_CDC && id->bInterfaceSubClass == + UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL) + return (UMATCH_IFACECLASS_GENERIC); + + return (UMATCH_NONE); +} + +static int +cdce_attach(device_t self) +{ + struct cdce_softc *sc = device_get_softc(self); + struct usb_attach_arg *uaa = device_get_ivars(self); + struct ifnet *ifp; + usbd_device_handle dev = uaa->device; + const struct cdce_type *t; + usb_interface_descriptor_t *id; + usb_endpoint_descriptor_t *ed; + const usb_cdc_union_descriptor_t *ud; + usb_config_descriptor_t *cd; + int data_ifcno; + int i, j, numalts; + u_char eaddr[ETHER_ADDR_LEN]; + const usb_cdc_ethernet_descriptor_t *ue; + char eaddr_str[USB_MAX_STRING_LEN]; + + sc->cdce_dev = self; + sc->cdce_udev = uaa->device; + + t = cdce_lookup(uaa->vendor, uaa->product); + if (t) + sc->cdce_flags = t->cdce_flags; + + if (sc->cdce_flags & CDCE_NO_UNION) + sc->cdce_data_iface = uaa->iface; + else { + ud = (const usb_cdc_union_descriptor_t *)usb_find_desc(sc->cdce_udev, + UDESC_CS_INTERFACE, UDESCSUB_CDC_UNION); + if (ud == NULL) { + device_printf(sc->cdce_dev, "no union descriptor\n"); + return ENXIO; + } + data_ifcno = ud->bSlaveInterface[0]; + + for (i = 0; i < uaa->nifaces; i++) { + if (uaa->ifaces[i] != NULL) { + id = usbd_get_interface_descriptor( + uaa->ifaces[i]); + if (id != NULL && id->bInterfaceNumber == + data_ifcno) { + sc->cdce_data_iface = uaa->ifaces[i]; + uaa->ifaces[i] = NULL; + } + } + } + } + + if (sc->cdce_data_iface == NULL) { + device_printf(sc->cdce_dev, "no data interface\n"); + return ENXIO; + } + + /* + * <quote> + * The Data Class interface of a networking device shall have a minimum + * of two interface settings. The first setting (the default interface + * setting) includes no endpoints and therefore no networking traffic is + * exchanged whenever the default interface setting is selected. One or + * more additional interface settings are used for normal operation, and + * therefore each includes a pair of endpoints (one IN, and one OUT) to + * exchange network traffic. Select an alternate interface setting to + * initialize the network aspects of the device and to enable the + * exchange of network traffic. + * </quote> + * + * Some devices, most notably cable modems, include interface settings + * that have no IN or OUT endpoint, therefore loop through the list of all + * available interface settings looking for one with both IN and OUT + * endpoints. + */ + id = usbd_get_interface_descriptor(sc->cdce_data_iface); + cd = usbd_get_config_descriptor(sc->cdce_udev); + numalts = usbd_get_no_alts(cd, id->bInterfaceNumber); + + for (j = 0; j < numalts; j++) { + if (usbd_set_interface(sc->cdce_data_iface, j)) { + device_printf(sc->cdce_dev, + "setting alternate interface failed\n"); + return ENXIO; + } + /* Find endpoints. */ + id = usbd_get_interface_descriptor(sc->cdce_data_iface); + sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1; + for (i = 0; i < id->bNumEndpoints; i++) { + ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i); + if (!ed) { + device_printf(sc->cdce_dev, + "could not read endpoint descriptor\n"); + return ENXIO; + } + if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && + UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { + sc->cdce_bulkin_no = ed->bEndpointAddress; + } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && + UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { + sc->cdce_bulkout_no = ed->bEndpointAddress; + } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && + UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { + /* XXX: CDC spec defines an interrupt pipe, but it is not + * needed for simple host-to-host applications. */ + } else { + device_printf(sc->cdce_dev, + "unexpected endpoint\n"); + } + } + /* If we found something, try and use it... */ + if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1)) + break; + } + + if (sc->cdce_bulkin_no == -1) { + device_printf(sc->cdce_dev, "could not find data bulk in\n"); + return ENXIO; + } + if (sc->cdce_bulkout_no == -1 ) { + device_printf(sc->cdce_dev, "could not find data bulk out\n"); + return ENXIO; + } + + mtx_init(&sc->cdce_mtx, device_get_nameunit(sc->cdce_dev), MTX_NETWORK_LOCK, + MTX_DEF | MTX_RECURSE); + ifmedia_init(&sc->cdce_ifmedia, 0, cdce_ifmedia_upd, cdce_ifmedia_sts); + CDCE_LOCK(sc); + + ue = (const usb_cdc_ethernet_descriptor_t *)usb_find_desc(dev, + UDESC_INTERFACE, UDESCSUB_CDC_ENF); + if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str, + sizeof(eaddr_str))) { + /* Fake MAC address */ + device_printf(sc->cdce_dev, "faking MAC address\n"); + eaddr[0]= 0x2a; + memcpy(&eaddr[1], &ticks, sizeof(u_int32_t)); + eaddr[5] = (u_int8_t)device_get_unit(sc->cdce_dev); + } else { + int i; + + memset(eaddr, 0, ETHER_ADDR_LEN); + for (i = 0; i < ETHER_ADDR_LEN * 2; i++) { + int c = eaddr_str[i]; + + if ('0' <= c && c <= '9') + c -= '0'; + else + c -= 'A' - 10; + c &= 0xf; + if (c % 2 == 0) + c <<= 4; + eaddr[i / 2] |= c; + } + } + + ifp = GET_IFP(sc) = if_alloc(IFT_ETHER); + if (ifp == NULL) { + device_printf(sc->cdce_dev, "can not if_alloc()\n"); + CDCE_UNLOCK(sc); + mtx_destroy(&sc->cdce_mtx); + return ENXIO; + } + ifp->if_softc = sc; + if_initname(ifp, "cdce", device_get_unit(sc->cdce_dev)); + ifp->if_mtu = ETHERMTU; + ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST | + IFF_NEEDSGIANT; + ifp->if_ioctl = cdce_ioctl; + ifp->if_output = ether_output; + ifp->if_start = cdce_start; + ifp->if_init = cdce_init; + ifp->if_baudrate = 11000000; + ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; + + sc->q.ifp = ifp; + sc->q.if_rxstart = cdce_rxstart; + + /* No IFM type for 11Mbps USB, so go with 10baseT */ + ifmedia_add(&sc->cdce_ifmedia, IFM_ETHER | IFM_10_T, 0, 0); + ifmedia_set(&sc->cdce_ifmedia, IFM_ETHER | IFM_10_T); + + ether_ifattach(ifp, eaddr); + usb_register_netisr(); + + CDCE_UNLOCK(sc); + + usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev, + sc->cdce_dev); + + return 0; +} + +static int +cdce_detach(device_t self) +{ + struct cdce_softc *sc = device_get_softc(self); + struct ifnet *ifp; + + CDCE_LOCK(sc); + sc->cdce_dying = 1; + ifp = GET_IFP(sc); + if (ifp->if_drv_flags & IFF_DRV_RUNNING) + cdce_shutdown(sc->cdce_dev); + + ether_ifdetach(ifp); + if_free(ifp); + ifmedia_removeall(&sc->cdce_ifmedia); + CDCE_UNLOCK(sc); + mtx_destroy(&sc->cdce_mtx); + + usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->cdce_udev, + sc->cdce_dev); + + return (0); +} + +static void +cdce_start(struct ifnet *ifp) +{ + struct cdce_softc *sc; + struct mbuf *m_head = NULL; + + sc = ifp->if_softc; + CDCE_LOCK(sc); + + + if (sc->cdce_dying || + ifp->if_drv_flags & IFF_DRV_OACTIVE || + !(ifp->if_drv_flags & IFF_DRV_RUNNING)) { + CDCE_UNLOCK(sc); + return; + } + + IF_DEQUEUE(&ifp->if_snd, m_head); + if (m_head == NULL) { + CDCE_UNLOCK(sc); + return; + } + + if (cdce_encap(sc, m_head, 0)) { + IF_PREPEND(&ifp->if_snd, m_head); + ifp->if_drv_flags |= IFF_DRV_OACTIVE; + CDCE_UNLOCK(sc); + return; + } + + BPF_MTAP(ifp, m_head); + + ifp->if_drv_flags |= IFF_DRV_OACTIVE; + + CDCE_UNLOCK(sc); + + return; +} + +static int +cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx) +{ + struct ue_chain *c; + usbd_status err; + int extra = 0; + + c = &sc->cdce_cdata.ue_tx_chain[idx]; + + m_copydata(m, 0, m->m_pkthdr.len, c->ue_buf); + if (sc->cdce_flags & CDCE_ZAURUS) { + /* Zaurus wants a 32-bit CRC appended to every frame */ + u_int32_t crc; + + crc = htole32(crc32(c->ue_buf, m->m_pkthdr.len)); + bcopy(&crc, c->ue_buf + m->m_pkthdr.len, 4); + extra = 4; + } + c->ue_mbuf = m; + + usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkout_pipe, c, c->ue_buf, + m->m_pkthdr.len + extra, 0, 10000, cdce_txeof); + err = usbd_transfer(c->ue_xfer); + if (err != USBD_IN_PROGRESS) { + cdce_stop(sc); + return (EIO); + } + + sc->cdce_cdata.ue_tx_cnt++; + + return (0); +} + +static void +cdce_stop(struct cdce_softc *sc) +{ + usbd_status err; + struct ifnet *ifp; + + CDCE_LOCK(sc); + + cdce_reset(sc); + + ifp = GET_IFP(sc); + ifp->if_timer = 0; + + if (sc->cdce_bulkin_pipe != NULL) { + err = usbd_abort_pipe(sc->cdce_bulkin_pipe); + if (err) + device_printf(sc->cdce_dev, + "abort rx pipe failed: %s\n", usbd_errstr(err)); + err = usbd_close_pipe(sc->cdce_bulkin_pipe); + if (err) + device_printf(sc->cdce_dev, + "close rx pipe failed: %s\n", usbd_errstr(err)); + sc->cdce_bulkin_pipe = NULL; + } + + if (sc->cdce_bulkout_pipe != NULL) { + err = usbd_abort_pipe(sc->cdce_bulkout_pipe); + if (err) + device_printf(sc->cdce_dev, + "abort tx pipe failed: %s\n", usbd_errstr(err)); + err = usbd_close_pipe(sc->cdce_bulkout_pipe); + if (err) + device_printf(sc->cdce_dev, + "close tx pipe failed: %s\n", usbd_errstr(err)); + sc->cdce_bulkout_pipe = NULL; + } + + usb_ether_rx_list_free(&sc->cdce_cdata); + usb_ether_tx_list_free(&sc->cdce_cdata); + + ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); + CDCE_UNLOCK(sc); + + return; +} + +static int +cdce_shutdown(device_t dev) +{ + struct cdce_softc *sc; + + sc = device_get_softc(dev); + cdce_stop(sc); + + return (0); +} + +static int +cdce_ioctl(struct ifnet *ifp, u_long command, caddr_t data) +{ + struct cdce_softc *sc = ifp->if_softc; + struct ifreq *ifr = (struct ifreq *)data; + int error = 0; + + if (sc->cdce_dying) + return (ENXIO); + + switch(command) { + case SIOCSIFFLAGS: + if (ifp->if_flags & IFF_UP) { + if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) + cdce_init(sc); + } else { + if (ifp->if_drv_flags & IFF_DRV_RUNNING) + cdce_stop(sc); + } + error = 0; + break; + + case SIOCSIFMEDIA: + case SIOCGIFMEDIA: + error = ifmedia_ioctl(ifp, ifr, &sc->cdce_ifmedia, command); + break; + + default: + error = ether_ioctl(ifp, command, data); + break; + } + + return (error); +} + +static void +cdce_reset(struct cdce_softc *sc) +{ + /* XXX Maybe reset the bulk pipes here? */ + return; +} + +static void +cdce_init(void *xsc) +{ + struct cdce_softc *sc = xsc; + struct ifnet *ifp = GET_IFP(sc); + struct ue_chain *c; + usbd_status err; + int i; + + if (ifp->if_drv_flags & IFF_DRV_RUNNING) + return; + + CDCE_LOCK(sc); + cdce_reset(sc); + + if (usb_ether_tx_list_init(sc, &sc->cdce_cdata, + sc->cdce_udev) == ENOBUFS) { + device_printf(sc->cdce_dev, "tx list init failed\n"); + CDCE_UNLOCK(sc); + return; + } + + if (usb_ether_rx_list_init(sc, &sc->cdce_cdata, + sc->cdce_udev) == ENOBUFS) { + device_printf(sc->cdce_dev, "rx list init failed\n"); + CDCE_UNLOCK(sc); + return; + } + + /* Maybe set multicast / broadcast here??? */ + + err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no, + USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe); + if (err) { + device_printf(sc->cdce_dev, "open rx pipe failed: %s\n", + usbd_errstr(err)); + CDCE_UNLOCK(sc); + return; + } + + err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no, + USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe); + if (err) { + device_printf(sc->cdce_dev, "open tx pipe failed: %s\n", + usbd_errstr(err)); + CDCE_UNLOCK(sc); + return; + } + + for (i = 0; i < UE_RX_LIST_CNT; i++) { + c = &sc->cdce_cdata.ue_rx_chain[i]; + usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkin_pipe, c, + mtod(c->ue_mbuf, char *), UE_BUFSZ, USBD_SHORT_XFER_OK, + USBD_NO_TIMEOUT, cdce_rxeof); + usbd_transfer(c->ue_xfer); + } + + ifp->if_drv_flags |= IFF_DRV_RUNNING; + ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; + + CDCE_UNLOCK(sc); + + return; +} + +static void +cdce_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) +{ + struct ue_chain *c = priv; + struct cdce_softc *sc = c->ue_sc; + struct ifnet *ifp; + struct mbuf *m; + int total_len = 0; + + CDCE_LOCK(sc); + ifp = GET_IFP(sc); + + if (sc->cdce_dying || !(ifp->if_drv_flags & IFF_DRV_RUNNING)) { + CDCE_UNLOCK(sc); + return; + } + + if (status != USBD_NORMAL_COMPLETION) { + if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { + CDCE_UNLOCK(sc); + return; + } + if (sc->cdce_rxeof_errors == 0) + device_printf(sc->cdce_dev, "usb error on rx: %s\n", + usbd_errstr(status)); + if (status == USBD_STALLED) + usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe); + DELAY(sc->cdce_rxeof_errors * 10000); + sc->cdce_rxeof_errors++; + goto done; + } + + sc->cdce_rxeof_errors = 0; + + usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); + + if (sc->cdce_flags & CDCE_ZAURUS) + total_len -= 4; /* Strip off CRC added by Zaurus */ + + m = c->ue_mbuf; + + if (total_len < sizeof(struct ether_header)) { + ifp->if_ierrors++; + goto done; + } + + ifp->if_ipackets++; + m->m_pkthdr.rcvif = (struct ifnet *)&sc->q; + m->m_pkthdr.len = m->m_len = total_len; + + /* Put the packet on the special USB input queue. */ + usb_ether_input(m); + CDCE_UNLOCK(sc); + + return; + +done: + /* Setup new transfer. */ + usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkin_pipe, c, + mtod(c->ue_mbuf, char *), + UE_BUFSZ, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, + cdce_rxeof); + usbd_transfer(c->ue_xfer); + CDCE_UNLOCK(sc); + + return; +} + +static void +cdce_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) +{ + struct ue_chain *c = priv; + struct cdce_softc *sc = c->ue_sc; + struct ifnet *ifp; + usbd_status err; + + CDCE_LOCK(sc); + ifp = GET_IFP(sc); + + if (sc->cdce_dying || + !(ifp->if_drv_flags & IFF_DRV_RUNNING)) { + CDCE_UNLOCK(sc); + return; + } + + if (status != USBD_NORMAL_COMPLETION) { + if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { + CDCE_UNLOCK(sc); + return; + } + ifp->if_oerrors++; + device_printf(sc->cdce_dev, "usb error on tx: %s\n", + usbd_errstr(status)); + if (status == USBD_STALLED) + usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe); + CDCE_UNLOCK(sc); + return; + } + + ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; + usbd_get_xfer_status(c->ue_xfer, NULL, NULL, NULL, &err); + + if (c->ue_mbuf != NULL) { + c->ue_mbuf->m_pkthdr.rcvif = ifp; + usb_tx_done(c->ue_mbuf); + c->ue_mbuf = NULL; + } + + if (err) + ifp->if_oerrors++; + else + ifp->if_opackets++; + + CDCE_UNLOCK(sc); + + return; +} + +static void +cdce_rxstart(struct ifnet *ifp) +{ + struct cdce_softc *sc; + struct ue_chain *c; + + sc = ifp->if_softc; + CDCE_LOCK(sc); + + if (sc->cdce_dying || !(ifp->if_drv_flags & IFF_DRV_RUNNING)) { + CDCE_UNLOCK(sc); + return; + } + + c = &sc->cdce_cdata.ue_rx_chain[sc->cdce_cdata.ue_rx_prod]; + + c->ue_mbuf = usb_ether_newbuf(); + if (c->ue_mbuf == NULL) { + device_printf(sc->cdce_dev, "no memory for rx list " + "-- packet dropped!\n"); + ifp->if_ierrors++; + CDCE_UNLOCK(sc); + return; + } + + usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkin_pipe, c, + mtod(c->ue_mbuf, char *), UE_BUFSZ, USBD_SHORT_XFER_OK, + USBD_NO_TIMEOUT, cdce_rxeof); + usbd_transfer(c->ue_xfer); + + CDCE_UNLOCK(sc); + return; +} + +static int +cdce_ifmedia_upd(struct ifnet *ifp) +{ + + /* no-op, cdce has only 1 possible media type */ + return 0; +} + +static void +cdce_ifmedia_sts(struct ifnet * const ifp, struct ifmediareq *req) +{ + + req->ifm_status = IFM_AVALID | IFM_ACTIVE; + req->ifm_active = IFM_ETHER | IFM_10_T; +} |
