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freebsd-skq/sys/dev/usb/if_rue.c
imp 1c0ad7a383 When all the other drivers were converted to scheduling a taskqueue to 
do the heavy lifting of the 'mii_tick' function, rue was left behind.
Implement this in a naive way.  Reports from the field show this makes
the driver functional with some locking issues, as opposed to an
instant panic.  Those will be addressed in a later version of the
driver.

Approved by: re@ (bmah)
2007-07-09 16:58:07 +00:00

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/*-
* Copyright (c) 2001-2003, Shunsuke Akiyama <akiyama@FreeBSD.org>.
* Copyright (c) 1997, 1998, 1999, 2000 Bill Paul <wpaul@ee.columbia.edu>.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR OR 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.
*/
/*-
* Copyright (c) 1997, 1998, 1999, 2000
* Bill Paul <wpaul@ee.columbia.edu>. 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* RealTek RTL8150 USB to fast ethernet controller driver.
* Datasheet is available from
* ftp://ftp.realtek.com.tw/lancard/data_sheet/8150/.
*/
#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/sysctl.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/if_types.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 "usbdevs.h"
#include <dev/usb/usb_ethersubr.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/usb/if_ruereg.h>
/* "device miibus" required. See GENERIC if you get errors here. */
#include "miibus_if.h"
#ifdef USB_DEBUG
static int ruedebug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, rue, CTLFLAG_RW, 0, "USB rue");
SYSCTL_INT(_hw_usb_rue, OID_AUTO, debug, CTLFLAG_RW,
&ruedebug, 0, "rue debug level");
#define DPRINTFN(n, x) do { \
if (ruedebug > (n)) \
printf x; \
} while (0);
#else
#define DPRINTFN(n, x)
#endif
#define DPRINTF(x) DPRINTFN(0, x)
/*
* Various supported device vendors/products.
*/
static struct rue_type rue_devs[] = {
{ USB_VENDOR_MELCO, USB_PRODUCT_MELCO_LUAKTX },
{ USB_VENDOR_REALTEK, USB_PRODUCT_REALTEK_USBKR100 },
{ 0, 0 }
};
static device_probe_t rue_match;
static device_attach_t rue_attach;
static device_detach_t rue_detach;
static device_shutdown_t rue_shutdown;
static miibus_readreg_t rue_miibus_readreg;
static miibus_writereg_t rue_miibus_writereg;
static miibus_statchg_t rue_miibus_statchg;
static int rue_encap(struct rue_softc *, struct mbuf *, int);
#ifdef RUE_INTR_PIPE
static void rue_intr(usbd_xfer_handle, usbd_private_handle, usbd_status);
#endif
static void rue_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
static void rue_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
static void rue_tick(void *);
static void rue_tick_task(void *);
static void rue_rxstart(struct ifnet *);
static void rue_start(struct ifnet *);
static int rue_ioctl(struct ifnet *, u_long, caddr_t);
static void rue_init(void *);
static void rue_stop(struct rue_softc *);
static void rue_watchdog(struct ifnet *);
static int rue_ifmedia_upd(struct ifnet *);
static void rue_ifmedia_sts(struct ifnet *, struct ifmediareq *);
static void rue_setmulti(struct rue_softc *);
static void rue_reset(struct rue_softc *);
static int rue_read_mem(struct rue_softc *, u_int16_t, void *, u_int16_t);
static int rue_write_mem(struct rue_softc *, u_int16_t, void *, u_int16_t);
static int rue_csr_read_1(struct rue_softc *, int);
static int rue_csr_write_1(struct rue_softc *, int, u_int8_t);
static int rue_csr_read_2(struct rue_softc *, int);
static int rue_csr_write_2(struct rue_softc *, int, u_int16_t);
static int rue_csr_write_4(struct rue_softc *, int, u_int32_t);
static device_method_t rue_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, rue_match),
DEVMETHOD(device_attach, rue_attach),
DEVMETHOD(device_detach, rue_detach),
DEVMETHOD(device_shutdown, rue_shutdown),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
/* MII interface */
DEVMETHOD(miibus_readreg, rue_miibus_readreg),
DEVMETHOD(miibus_writereg, rue_miibus_writereg),
DEVMETHOD(miibus_statchg, rue_miibus_statchg),
{ 0, 0 }
};
static driver_t rue_driver = {
"rue",
rue_methods,
sizeof(struct rue_softc)
};
static devclass_t rue_devclass;
DRIVER_MODULE(rue, uhub, rue_driver, rue_devclass, usbd_driver_load, 0);
DRIVER_MODULE(miibus, rue, miibus_driver, miibus_devclass, 0, 0);
MODULE_DEPEND(rue, usb, 1, 1, 1);
MODULE_DEPEND(rue, ether, 1, 1, 1);
MODULE_DEPEND(rue, miibus, 1, 1, 1);
#define RUE_SETBIT(sc, reg, x) \
rue_csr_write_1(sc, reg, rue_csr_read_1(sc, reg) | (x))
#define RUE_CLRBIT(sc, reg, x) \
rue_csr_write_1(sc, reg, rue_csr_read_1(sc, reg) & ~(x))
#define RUE_SETBIT_2(sc, reg, x) \
rue_csr_write_2(sc, reg, rue_csr_read_2(sc, reg) | (x))
#define RUE_CLRBIT_2(sc, reg, x) \
rue_csr_write_2(sc, reg, rue_csr_read_2(sc, reg) & ~(x))
static int
rue_read_mem(struct rue_softc *sc, u_int16_t addr, void *buf, u_int16_t len)
{
usb_device_request_t req;
usbd_status err;
if (sc->rue_dying)
return (0);
RUE_LOCK(sc);
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = UR_SET_ADDRESS;
USETW(req.wValue, addr);
USETW(req.wIndex, 0);
USETW(req.wLength, len);
err = usbd_do_request(sc->rue_udev, &req, buf);
RUE_UNLOCK(sc);
if (err) {
device_printf(sc->rue_dev, "control pipe read failed: %s\n",
usbd_errstr(err));
return (-1);
}
return (0);
}
static int
rue_write_mem(struct rue_softc *sc, u_int16_t addr, void *buf, u_int16_t len)
{
usb_device_request_t req;
usbd_status err;
if (sc->rue_dying)
return (0);
RUE_LOCK(sc);
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = UR_SET_ADDRESS;
USETW(req.wValue, addr);
USETW(req.wIndex, 0);
USETW(req.wLength, len);
err = usbd_do_request(sc->rue_udev, &req, buf);
RUE_UNLOCK(sc);
if (err) {
device_printf(sc->rue_dev, "control pipe write failed: %s\n",
usbd_errstr(err));
return (-1);
}
return (0);
}
static int
rue_csr_read_1(struct rue_softc *sc, int reg)
{
int err;
u_int8_t val = 0;
err = rue_read_mem(sc, reg, &val, 1);
if (err)
return (0);
return (val);
}
static int
rue_csr_read_2(struct rue_softc *sc, int reg)
{
int err;
u_int16_t val = 0;
uWord w;
USETW(w, val);
err = rue_read_mem(sc, reg, &w, 2);
val = UGETW(w);
if (err)
return (0);
return (val);
}
static int
rue_csr_write_1(struct rue_softc *sc, int reg, u_int8_t val)
{
int err;
err = rue_write_mem(sc, reg, &val, 1);
if (err)
return (-1);
return (0);
}
static int
rue_csr_write_2(struct rue_softc *sc, int reg, u_int16_t val)
{
int err;
uWord w;
USETW(w, val);
err = rue_write_mem(sc, reg, &w, 2);
if (err)
return (-1);
return (0);
}
static int
rue_csr_write_4(struct rue_softc *sc, int reg, u_int32_t val)
{
int err;
uDWord dw;
USETDW(dw, val);
err = rue_write_mem(sc, reg, &dw, 4);
if (err)
return (-1);
return (0);
}
static int
rue_miibus_readreg(device_t dev, int phy, int reg)
{
struct rue_softc *sc = device_get_softc(dev);
int rval;
int ruereg;
if (phy != 0) /* RTL8150 supports PHY == 0, only */
return (0);
switch (reg) {
case MII_BMCR:
ruereg = RUE_BMCR;
break;
case MII_BMSR:
ruereg = RUE_BMSR;
break;
case MII_ANAR:
ruereg = RUE_ANAR;
break;
case MII_ANER:
ruereg = RUE_AER;
break;
case MII_ANLPAR:
ruereg = RUE_ANLP;
break;
case MII_PHYIDR1:
case MII_PHYIDR2:
return (0);
break;
default:
if (RUE_REG_MIN <= reg && reg <= RUE_REG_MAX) {
rval = rue_csr_read_1(sc, reg);
return (rval);
}
device_printf(sc->rue_dev, "bad phy register\n");
return (0);
}
rval = rue_csr_read_2(sc, ruereg);
return (rval);
}
static int
rue_miibus_writereg(device_t dev, int phy, int reg, int data)
{
struct rue_softc *sc = device_get_softc(dev);
int ruereg;
if (phy != 0) /* RTL8150 supports PHY == 0, only */
return (0);
switch (reg) {
case MII_BMCR:
ruereg = RUE_BMCR;
break;
case MII_BMSR:
ruereg = RUE_BMSR;
break;
case MII_ANAR:
ruereg = RUE_ANAR;
break;
case MII_ANER:
ruereg = RUE_AER;
break;
case MII_ANLPAR:
ruereg = RUE_ANLP;
break;
case MII_PHYIDR1:
case MII_PHYIDR2:
return (0);
break;
default:
if (RUE_REG_MIN <= reg && reg <= RUE_REG_MAX) {
rue_csr_write_1(sc, reg, data);
return (0);
}
device_printf(sc->rue_dev, "bad phy register\n");
return (0);
}
rue_csr_write_2(sc, ruereg, data);
return (0);
}
static void
rue_miibus_statchg(device_t dev)
{
/*
* When the code below is enabled the card starts doing weird
* things after link going from UP to DOWN and back UP.
*
* Looks like some of register writes below messes up PHY
* interface.
*
* No visible regressions were found after commenting this code
* out, so that disable it for good.
*/
#if 0
struct rue_softc *sc = device_get_softc(dev);
struct mii_data *mii = GET_MII(sc);
int bmcr;
RUE_CLRBIT(sc, RUE_CR, (RUE_CR_RE | RUE_CR_TE));
bmcr = rue_csr_read_2(sc, RUE_BMCR);
if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX)
bmcr |= RUE_BMCR_SPD_SET;
else
bmcr &= ~RUE_BMCR_SPD_SET;
if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX)
bmcr |= RUE_BMCR_DUPLEX;
else
bmcr &= ~RUE_BMCR_DUPLEX;
rue_csr_write_2(sc, RUE_BMCR, bmcr);
RUE_SETBIT(sc, RUE_CR, (RUE_CR_RE | RUE_CR_TE));
#endif
}
/*
* Program the 64-bit multicast hash filter.
*/
static void
rue_setmulti(struct rue_softc *sc)
{
struct ifnet *ifp;
int h = 0;
u_int32_t hashes[2] = { 0, 0 };
struct ifmultiaddr *ifma;
u_int32_t rxcfg;
int mcnt = 0;
ifp = sc->rue_ifp;
rxcfg = rue_csr_read_2(sc, RUE_RCR);
if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
rxcfg |= (RUE_RCR_AAM | RUE_RCR_AAP);
rxcfg &= ~RUE_RCR_AM;
rue_csr_write_2(sc, RUE_RCR, rxcfg);
rue_csr_write_4(sc, RUE_MAR0, 0xFFFFFFFF);
rue_csr_write_4(sc, RUE_MAR4, 0xFFFFFFFF);
return;
}
/* first, zot all the existing hash bits */
rue_csr_write_4(sc, RUE_MAR0, 0);
rue_csr_write_4(sc, RUE_MAR4, 0);
/* now program new ones */
IF_ADDR_LOCK(ifp);
TAILQ_FOREACH (ifma, &ifp->if_multiaddrs, ifma_link)
{
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
if (h < 32)
hashes[0] |= (1 << h);
else
hashes[1] |= (1 << (h - 32));
mcnt++;
}
IF_ADDR_UNLOCK(ifp);
if (mcnt)
rxcfg |= RUE_RCR_AM;
else
rxcfg &= ~RUE_RCR_AM;
rxcfg &= ~(RUE_RCR_AAM | RUE_RCR_AAP);
rue_csr_write_2(sc, RUE_RCR, rxcfg);
rue_csr_write_4(sc, RUE_MAR0, hashes[0]);
rue_csr_write_4(sc, RUE_MAR4, hashes[1]);
}
static void
rue_reset(struct rue_softc *sc)
{
int i;
rue_csr_write_1(sc, RUE_CR, RUE_CR_SOFT_RST);
for (i = 0; i < RUE_TIMEOUT; i++) {
DELAY(500);
if (!(rue_csr_read_1(sc, RUE_CR) & RUE_CR_SOFT_RST))
break;
}
if (i == RUE_TIMEOUT)
device_printf(sc->rue_dev, "reset never completed!\n");
DELAY(10000);
}
/*
* Probe for a RTL8150 chip.
*/
static int
rue_match(device_t self)
{
struct usb_attach_arg *uaa = device_get_ivars(self);
struct rue_type *t;
if (uaa->iface == NULL)
return (UMATCH_NONE);
t = rue_devs;
while (t->rue_vid) {
if (uaa->vendor == t->rue_vid &&
uaa->product == t->rue_did) {
return (UMATCH_VENDOR_PRODUCT);
}
t++;
}
return (UMATCH_NONE);
}
/*
* Attach the interface. Allocate softc structures, do ifmedia
* setup and ethernet/BPF attach.
*/
static int
rue_attach(device_t self)
{
struct rue_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;
struct rue_type *t;
sc->rue_dev = self;
sc->rue_udev = uaa->device;
if (usbd_set_config_no(sc->rue_udev, RUE_CONFIG_NO, 0)) {
device_printf(sc->rue_dev, "getting interface handle failed\n");
goto error;
}
usb_init_task(&sc->rue_tick_task, rue_tick_task, sc);
err = usbd_device2interface_handle(uaa->device, RUE_IFACE_IDX, &iface);
if (err) {
device_printf(sc->rue_dev, "getting interface handle failed\n");
goto error;
}
sc->rue_iface = iface;
t = rue_devs;
while (t->rue_vid) {
if (uaa->vendor == t->rue_vid &&
uaa->product == t->rue_did) {
sc->rue_info = t;
break;
}
t++;
}
id = usbd_get_interface_descriptor(sc->rue_iface);
/* Find endpoints */
for (i = 0; i < id->bNumEndpoints; i++) {
ed = usbd_interface2endpoint_descriptor(iface, i);
if (ed == NULL) {
device_printf(sc->rue_dev, "couldn't get ep %d\n", i);
goto error;
}
if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
sc->rue_ed[RUE_ENDPT_RX] = ed->bEndpointAddress;
} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
sc->rue_ed[RUE_ENDPT_TX] = ed->bEndpointAddress;
} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
sc->rue_ed[RUE_ENDPT_INTR] = ed->bEndpointAddress;
}
}
mtx_init(&sc->rue_mtx, device_get_nameunit(self), MTX_NETWORK_LOCK,
MTX_DEF | MTX_RECURSE);
RUE_LOCK(sc);
/* Reset the adapter */
rue_reset(sc);
/* Get station address from the EEPROM */
err = rue_read_mem(sc, RUE_EEPROM_IDR0,
(caddr_t)&eaddr, ETHER_ADDR_LEN);
if (err) {
device_printf(sc->rue_dev, "couldn't get station address\n");
goto error1;
}
ifp = sc->rue_ifp = if_alloc(IFT_ETHER);
if (ifp == NULL) {
device_printf(sc->rue_dev, "can not if_alloc()\n");
goto error1;
}
ifp->if_softc = sc;
if_initname(ifp, "rue", device_get_unit(sc->rue_dev));
ifp->if_mtu = ETHERMTU;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST |
IFF_NEEDSGIANT;
ifp->if_ioctl = rue_ioctl;
ifp->if_start = rue_start;
ifp->if_watchdog = rue_watchdog;
ifp->if_init = rue_init;
ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
/* MII setup */
if (mii_phy_probe(self, &sc->rue_miibus,
rue_ifmedia_upd, rue_ifmedia_sts)) {
device_printf(sc->rue_dev, "MII without any PHY!\n");
goto error2;
}
sc->rue_qdat.ifp = ifp;
sc->rue_qdat.if_rxstart = rue_rxstart;
/* Call MI attach routine */
ether_ifattach(ifp, eaddr);
callout_handle_init(&sc->rue_stat_ch);
usb_register_netisr();
sc->rue_dying = 0;
RUE_UNLOCK(sc);
return 0;
error2:
if_free(ifp);
error1:
RUE_UNLOCK(sc);
mtx_destroy(&sc->rue_mtx);
error:
return ENXIO;
}
static int
rue_detach(device_t dev)
{
struct rue_softc *sc;
struct ifnet *ifp;
sc = device_get_softc(dev);
RUE_LOCK(sc);
ifp = sc->rue_ifp;
sc->rue_dying = 1;
untimeout(rue_tick, sc, sc->rue_stat_ch);
usb_rem_task(sc->rue_udev, &sc->rue_tick_task);
ether_ifdetach(ifp);
if_free(ifp);
if (sc->rue_ep[RUE_ENDPT_TX] != NULL)
usbd_abort_pipe(sc->rue_ep[RUE_ENDPT_TX]);
if (sc->rue_ep[RUE_ENDPT_RX] != NULL)
usbd_abort_pipe(sc->rue_ep[RUE_ENDPT_RX]);
#ifdef RUE_INTR_PIPE
if (sc->rue_ep[RUE_ENDPT_INTR] != NULL)
usbd_abort_pipe(sc->rue_ep[RUE_ENDPT_INTR]);
#endif
RUE_UNLOCK(sc);
mtx_destroy(&sc->rue_mtx);
return (0);
}
#ifdef RUE_INTR_PIPE
static void
rue_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
{
struct rue_softc *sc = priv;
struct ifnet *ifp;
struct rue_intrpkt *p;
RUE_LOCK(sc);
ifp = sc->rue_ifp;
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
RUE_UNLOCK(sc);
return;
}
if (status != USBD_NORMAL_COMPLETION) {
if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
RUE_UNLOCK(sc);
return;
}
device_printf(sc->rue_dev, "usb error on intr: %s\n",
usbd_errstr(status));
if (status == USBD_STALLED)
usbd_clear_endpoint_stall(sc->rue_ep[RUE_ENDPT_INTR]);
RUE_UNLOCK(sc);
return;
}
usbd_get_xfer_status(xfer, NULL, (void **)&p, NULL, NULL);
ifp->if_ierrors += p->rue_rxlost_cnt;
ifp->if_ierrors += p->rue_crcerr_cnt;
ifp->if_collisions += p->rue_col_cnt;
RUE_UNLOCK(sc);
}
#endif
static void
rue_rxstart(struct ifnet *ifp)
{
struct rue_softc *sc;
struct ue_chain *c;
sc = ifp->if_softc;
RUE_LOCK(sc);
c = &sc->rue_cdata.ue_rx_chain[sc->rue_cdata.ue_rx_prod];
c->ue_mbuf = usb_ether_newbuf();
if (c->ue_mbuf == NULL) {
printf("%s: no memory for rx list "
"-- packet dropped!\n", device_get_nameunit(sc->rue_dev));
ifp->if_ierrors++;
RUE_UNLOCK(sc);
return;
}
/* Setup new transfer. */
usbd_setup_xfer(c->ue_xfer, sc->rue_ep[RUE_ENDPT_RX],
c, mtod(c->ue_mbuf, char *), UE_BUFSZ, USBD_SHORT_XFER_OK,
USBD_NO_TIMEOUT, rue_rxeof);
usbd_transfer(c->ue_xfer);
RUE_UNLOCK(sc);
}
/*
* A frame has been uploaded: pass the resulting mbuf chain up to
* the higher level protocols.
*/
static void
rue_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
{
struct ue_chain *c = priv;
struct rue_softc *sc = c->ue_sc;
struct mbuf *m;
struct ifnet *ifp;
int total_len = 0;
struct rue_rxpkt r;
if (sc->rue_dying)
return;
RUE_LOCK(sc);
ifp = sc->rue_ifp;
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
RUE_UNLOCK(sc);
return;
}
if (status != USBD_NORMAL_COMPLETION) {
if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
RUE_UNLOCK(sc);
return;
}
if (usbd_ratecheck(&sc->rue_rx_notice))
device_printf(sc->rue_dev, "usb error on rx: %s\n",
usbd_errstr(status));
if (status == USBD_STALLED)
usbd_clear_endpoint_stall(sc->rue_ep[RUE_ENDPT_RX]);
goto done;
}
usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
if (total_len <= ETHER_CRC_LEN) {
ifp->if_ierrors++;
goto done;
}
m = c->ue_mbuf;
bcopy(mtod(m, char *) + total_len - 4, (char *)&r, sizeof (r));
/* Check recieve packet was valid or not */
if ((r.rue_rxstat & RUE_RXSTAT_VALID) == 0) {
ifp->if_ierrors++;
goto done;
}
/* No errors; receive the packet. */
total_len -= ETHER_CRC_LEN;
ifp->if_ipackets++;
m->m_pkthdr.rcvif = (void *)&sc->rue_qdat;
m->m_pkthdr.len = m->m_len = total_len;
/* Put the packet on the special USB input queue. */
usb_ether_input(m);
RUE_UNLOCK(sc);
return;
done:
/* Setup new transfer. */
usbd_setup_xfer(xfer, sc->rue_ep[RUE_ENDPT_RX],
c, mtod(c->ue_mbuf, char *), UE_BUFSZ,
USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rue_rxeof);
usbd_transfer(xfer);
RUE_UNLOCK(sc);
}
/*
* A frame was downloaded to the chip. It's safe for us to clean up
* the list buffers.
*/
static void
rue_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
{
struct ue_chain *c = priv;
struct rue_softc *sc = c->ue_sc;
struct ifnet *ifp;
usbd_status err;
RUE_LOCK(sc);
ifp = sc->rue_ifp;
if (status != USBD_NORMAL_COMPLETION) {
if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
RUE_UNLOCK(sc);
return;
}
device_printf(sc->rue_dev, "usb error on tx: %s\n",
usbd_errstr(status));
if (status == USBD_STALLED)
usbd_clear_endpoint_stall(sc->rue_ep[RUE_ENDPT_TX]);
RUE_UNLOCK(sc);
return;
}
ifp->if_timer = 0;
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++;
RUE_UNLOCK(sc);
}
static void
rue_tick(void *xsc)
{
struct rue_softc *sc = xsc;
if (sc == NULL)
return;
if (sc->rue_dying)
return;
/* Perform periodic stuff in process context */
usb_add_task(sc->rue_udev, &sc->rue_tick_task, USB_TASKQ_DRIVER);
}
static void
rue_tick_task(void *xsc)
{
struct rue_softc *sc = xsc;
struct ifnet *ifp;
struct mii_data *mii;
if (sc == NULL)
return;
RUE_LOCK(sc);
ifp = sc->rue_ifp;
mii = GET_MII(sc);
if (mii == NULL) {
RUE_UNLOCK(sc);
return;
}
mii_tick(mii);
if (!sc->rue_link && mii->mii_media_status & IFM_ACTIVE &&
IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
sc->rue_link++;
if (ifp->if_snd.ifq_head != NULL)
rue_start(ifp);
}
sc->rue_stat_ch = timeout(rue_tick, sc, hz);
RUE_UNLOCK(sc);
}
static int
rue_encap(struct rue_softc *sc, struct mbuf *m, int idx)
{
int total_len;
struct ue_chain *c;
usbd_status err;
c = &sc->rue_cdata.ue_tx_chain[idx];
/*
* Copy the mbuf data into a contiguous buffer
*/
m_copydata(m, 0, m->m_pkthdr.len, c->ue_buf);
c->ue_mbuf = m;
total_len = m->m_pkthdr.len;
/*
* This is an undocumented behavior.
* RTL8150 chip doesn't send frame length smaller than
* RUE_MIN_FRAMELEN (60) byte packet.
*/
if (total_len < RUE_MIN_FRAMELEN)
total_len = RUE_MIN_FRAMELEN;
usbd_setup_xfer(c->ue_xfer, sc->rue_ep[RUE_ENDPT_TX],
c, c->ue_buf, total_len, USBD_FORCE_SHORT_XFER,
10000, rue_txeof);
/* Transmit */
err = usbd_transfer(c->ue_xfer);
if (err != USBD_IN_PROGRESS) {
rue_stop(sc);
return (EIO);
}
sc->rue_cdata.ue_tx_cnt++;
return (0);
}
static void
rue_start(struct ifnet *ifp)
{
struct rue_softc *sc = ifp->if_softc;
struct mbuf *m_head = NULL;
RUE_LOCK(sc);
if (!sc->rue_link) {
RUE_UNLOCK(sc);
return;
}
if (ifp->if_drv_flags & IFF_DRV_OACTIVE) {
RUE_UNLOCK(sc);
return;
}
IF_DEQUEUE(&ifp->if_snd, m_head);
if (m_head == NULL) {
RUE_UNLOCK(sc);
return;
}
if (rue_encap(sc, m_head, 0)) {
IF_PREPEND(&ifp->if_snd, m_head);
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
RUE_UNLOCK(sc);
return;
}
/*
* If there's a BPF listener, bounce a copy of this frame
* to him.
*/
BPF_MTAP(ifp, m_head);
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
/*
* Set a timeout in case the chip goes out to lunch.
*/
ifp->if_timer = 5;
RUE_UNLOCK(sc);
}
static void
rue_init(void *xsc)
{
struct rue_softc *sc = xsc;
struct ifnet *ifp = sc->rue_ifp;
struct mii_data *mii = GET_MII(sc);
struct ue_chain *c;
usbd_status err;
int i;
int rxcfg;
RUE_LOCK(sc);
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
RUE_UNLOCK(sc);
return;
}
/*
* Cancel pending I/O and free all RX/TX buffers.
*/
rue_reset(sc);
/* Set MAC address */
rue_write_mem(sc, RUE_IDR0, IF_LLADDR(sc->rue_ifp),
ETHER_ADDR_LEN);
/* Init TX ring. */
if (usb_ether_tx_list_init(sc, &sc->rue_cdata,
sc->rue_udev) == ENOBUFS) {
device_printf(sc->rue_dev, "tx list init failed\n");
RUE_UNLOCK(sc);
return;
}
/* Init RX ring. */
if (usb_ether_rx_list_init(sc, &sc->rue_cdata,
sc->rue_udev) == ENOBUFS) {
device_printf(sc->rue_dev, "rx list init failed\n");
RUE_UNLOCK(sc);
return;
}
#ifdef RUE_INTR_PIPE
sc->rue_cdata.ue_ibuf = malloc(RUE_INTR_PKTLEN, M_USBDEV, M_NOWAIT);
#endif
/*
* Set the initial TX and RX configuration.
*/
rue_csr_write_1(sc, RUE_TCR, RUE_TCR_CONFIG);
rxcfg = RUE_RCR_CONFIG;
/* Set capture broadcast bit to capture broadcast frames. */
if (ifp->if_flags & IFF_BROADCAST)
rxcfg |= RUE_RCR_AB;
else
rxcfg &= ~RUE_RCR_AB;
/* If we want promiscuous mode, set the allframes bit. */
if (ifp->if_flags & IFF_PROMISC)
rxcfg |= RUE_RCR_AAP;
else
rxcfg &= ~RUE_RCR_AAP;
rue_csr_write_2(sc, RUE_RCR, rxcfg);
/* Load the multicast filter. */
rue_setmulti(sc);
/* Enable RX and TX */
rue_csr_write_1(sc, RUE_CR, (RUE_CR_TE | RUE_CR_RE | RUE_CR_EP3CLREN));
mii_mediachg(mii);
/* Open RX and TX pipes. */
err = usbd_open_pipe(sc->rue_iface, sc->rue_ed[RUE_ENDPT_RX],
USBD_EXCLUSIVE_USE, &sc->rue_ep[RUE_ENDPT_RX]);
if (err) {
device_printf(sc->rue_dev, "open rx pipe failed: %s\n",
usbd_errstr(err));
RUE_UNLOCK(sc);
return;
}
err = usbd_open_pipe(sc->rue_iface, sc->rue_ed[RUE_ENDPT_TX],
USBD_EXCLUSIVE_USE, &sc->rue_ep[RUE_ENDPT_TX]);
if (err) {
device_printf(sc->rue_dev, "open tx pipe failed: %s\n",
usbd_errstr(err));
RUE_UNLOCK(sc);
return;
}
#ifdef RUE_INTR_PIPE
err = usbd_open_pipe_intr(sc->rue_iface, sc->rue_ed[RUE_ENDPT_INTR],
USBD_SHORT_XFER_OK,
&sc->rue_ep[RUE_ENDPT_INTR], sc,
sc->rue_cdata.ue_ibuf, RUE_INTR_PKTLEN,
rue_intr, RUE_INTR_INTERVAL);
if (err) {
device_printf(sc->rue_dev, "open intr pipe failed: %s\n",
usbd_errstr(err));
RUE_UNLOCK(sc);
return;
}
#endif
/* Start up the receive pipe. */
for (i = 0; i < UE_RX_LIST_CNT; i++) {
c = &sc->rue_cdata.ue_rx_chain[i];
usbd_setup_xfer(c->ue_xfer, sc->rue_ep[RUE_ENDPT_RX],
c, mtod(c->ue_mbuf, char *), UE_BUFSZ,
USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, rue_rxeof);
usbd_transfer(c->ue_xfer);
}
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
sc->rue_stat_ch = timeout(rue_tick, sc, hz);
RUE_UNLOCK(sc);
}
/*
* Set media options.
*/
static int
rue_ifmedia_upd(struct ifnet *ifp)
{
struct rue_softc *sc = ifp->if_softc;
struct mii_data *mii = GET_MII(sc);
sc->rue_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
rue_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
{
struct rue_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;
}
static int
rue_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
{
struct rue_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *)data;
struct mii_data *mii;
int error = 0;
RUE_LOCK(sc);
switch (command) {
case SIOCSIFFLAGS:
if (ifp->if_flags & IFF_UP) {
if (ifp->if_drv_flags & IFF_DRV_RUNNING &&
ifp->if_flags & IFF_PROMISC &&
!(sc->rue_if_flags & IFF_PROMISC)) {
RUE_SETBIT_2(sc, RUE_RCR,
(RUE_RCR_AAM | RUE_RCR_AAP));
rue_setmulti(sc);
} else if (ifp->if_drv_flags & IFF_DRV_RUNNING &&
!(ifp->if_flags & IFF_PROMISC) &&
sc->rue_if_flags & IFF_PROMISC) {
RUE_CLRBIT_2(sc, RUE_RCR,
(RUE_RCR_AAM | RUE_RCR_AAP));
rue_setmulti(sc);
} else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
rue_init(sc);
} else {
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
rue_stop(sc);
}
sc->rue_if_flags = ifp->if_flags;
error = 0;
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
rue_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;
}
RUE_UNLOCK(sc);
return (error);
}
static void
rue_watchdog(struct ifnet *ifp)
{
struct rue_softc *sc = ifp->if_softc;
struct ue_chain *c;
usbd_status stat;
RUE_LOCK(sc);
ifp->if_oerrors++;
device_printf(sc->rue_dev, "watchdog timeout\n");
c = &sc->rue_cdata.ue_tx_chain[0];
usbd_get_xfer_status(c->ue_xfer, NULL, NULL, NULL, &stat);
rue_txeof(c->ue_xfer, c, stat);
if (ifp->if_snd.ifq_head != NULL)
rue_start(ifp);
RUE_UNLOCK(sc);
}
/*
* Stop the adapter and free any mbufs allocated to the
* RX and TX lists.
*/
static void
rue_stop(struct rue_softc *sc)
{
usbd_status err;
struct ifnet *ifp;
RUE_LOCK(sc);
ifp = sc->rue_ifp;
ifp->if_timer = 0;
rue_csr_write_1(sc, RUE_CR, 0x00);
rue_reset(sc);
untimeout(rue_tick, sc, sc->rue_stat_ch);
/* Stop transfers. */
if (sc->rue_ep[RUE_ENDPT_RX] != NULL) {
err = usbd_abort_pipe(sc->rue_ep[RUE_ENDPT_RX]);
if (err) {
device_printf(sc->rue_dev, "abort rx pipe failed: %s\n",
usbd_errstr(err));
}
err = usbd_close_pipe(sc->rue_ep[RUE_ENDPT_RX]);
if (err) {
device_printf(sc->rue_dev, "close rx pipe failed: %s\n",
usbd_errstr(err));
}
sc->rue_ep[RUE_ENDPT_RX] = NULL;
}
if (sc->rue_ep[RUE_ENDPT_TX] != NULL) {
err = usbd_abort_pipe(sc->rue_ep[RUE_ENDPT_TX]);
if (err) {
device_printf(sc->rue_dev, "abort tx pipe failed: %s\n",
usbd_errstr(err));
}
err = usbd_close_pipe(sc->rue_ep[RUE_ENDPT_TX]);
if (err) {
device_printf(sc->rue_dev, "close tx pipe failed: %s\n",
usbd_errstr(err));
}
sc->rue_ep[RUE_ENDPT_TX] = NULL;
}
#ifdef RUE_INTR_PIPE
if (sc->rue_ep[RUE_ENDPT_INTR] != NULL) {
err = usbd_abort_pipe(sc->rue_ep[RUE_ENDPT_INTR]);
if (err) {
device_printf(sc->rue_dev, "abort intr pipe failed: %s\n",
usbd_errstr(err));
}
err = usbd_close_pipe(sc->rue_ep[RUE_ENDPT_INTR]);
if (err) {
device_printf(sc->rue_dev, "close intr pipe failed: %s\n",
usbd_errstr(err));
}
sc->rue_ep[RUE_ENDPT_INTR] = NULL;
}
#endif
/* Free RX resources. */
usb_ether_rx_list_free(&sc->rue_cdata);
/* Free TX resources. */
usb_ether_tx_list_free(&sc->rue_cdata);
#ifdef RUE_INTR_PIPE
free(sc->rue_cdata.ue_ibuf, M_USBDEV);
sc->rue_cdata.ue_ibuf = NULL;
#endif
sc->rue_link = 0;
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
RUE_UNLOCK(sc);
}
/*
* Stop all chip I/O so that the kernel's probe routines don't
* get confused by errant DMAs when rebooting.
*/
static int
rue_shutdown(device_t dev)
{
struct rue_softc *sc;
sc = device_get_softc(dev);
sc->rue_dying++;
RUE_LOCK(sc);
rue_reset(sc);
rue_stop(sc);
RUE_UNLOCK(sc);
return (0);
}
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