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freebsd-nq/sys/dev/usb/if_axe.c
Bill Paul 20ea6dd580 In the device attach routine, don't depend on uaa->iface being 
populated. Apparently, if you use an ehci controller, it's not.
Use usbd_device2interface_handle() to retrieve the interface handle.
NOTE: uaa->iface is populated in the probe routine, so I suspect the
fact that it's NULL in the attach routine is a bug in the ehci driver.

Also, don't depend on the PHY addresses returned by the AXE_CMD_READ_PHYID
command. The address is correct for my LinkSys NIC, but a user has
reported that with a D-Link NIC, the PHYID command returns address 4
while the attached Broadcom PHY is in fact strapped for address 0.
Instead, latch onto the first PHY address that returns valid data
during a readreg operation.
2003-06-15 21:45:43 +00:00

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/*
* 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 },
{ USB_VENDOR_DLINK, USB_PRODUCT_DLINK_DUBE100 },
{ USB_VENDOR_LINKSYS2, USB_PRODUCT_LINKSYS_USB200M },
{ USB_VENDOR_NETGEAR, USB_PRODUCT_NETGEAR_FA120 },
{ 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);
#ifdef notdef
/*
* 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);
#endif
if (sc->axe_phyaddrs[0] != 0xFF && sc->axe_phyaddrs[0] != phy)
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);
}
if (val)
sc->axe_phyaddrs[0] = phy;
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, 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_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;
}
if (usbd_device2interface_handle(uaa->device,
AXE_IFACE_IDX, &sc->axe_iface)) {
printf("axe%d: getting interface handle failed\n",
sc->axe_unit);
USB_ATTACH_ERROR_RETURN;
}
id = usbd_get_interface_descriptor(sc->axe_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(sc->axe_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);
/*
* Work around broken adapters that appear to lie about
* their PHY addresses.
*/
sc->axe_phyaddrs[0] = sc->axe_phyaddrs[1] = 0xFF;
/*
* 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;
}
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