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freebsd-skq/sys/dev/usb/net/if_rue.c
marius d0f32374e6 - Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP 
(reporting IFM_LOOP based on BMCR_LOOP is left in place though as
  it might provide useful for debugging). For most mii(4) drivers it
  was unclear whether the PHYs driven by them actually support
  loopback or not. Moreover, typically loopback mode also needs to
  be activated on the MAC, which none of the Ethernet drivers using
  mii(4) implements. Given that loopback media has no real use (and
  obviously hardly had a chance to actually work) besides for driver
  development (which just loopback mode should be sufficient for
  though, i.e one doesn't necessary need support for loopback media)
  support for it is just dropped as both NetBSD and OpenBSD already
  did quite some time ago.
- Let mii_phy_add_media() also announce the support of IFM_NONE.
- Restructure the PHY entry points to use a structure of entry points
  instead of discrete function pointers, and extend this to include
  a "reset" entry point. Make sure any PHY-specific reset routine is
  always used, and provide one for lxtphy(4) which disables MII
  interrupts (as is done for a few other PHYs we have drivers for).
  This includes changing NIC drivers which previously just called the
  generic mii_phy_reset() to now actually call the PHY-specific reset
  routine, which might be crucial in some cases. While at it, the
  redundant checks in these NIC drivers for mii->mii_instance not being
  zero before calling the reset routines were removed because as soon
  as one PHY driver attaches mii->mii_instance is incremented and we
  hardly can end up in their media change callbacks etc if no PHY driver
  has attached as mii_attach() would have failed in that case and not
  attach a miibus(4) instance.
  Consequently, NIC drivers now no longer should call mii_phy_reset()
  directly, so it was removed from EXPORT_SYMS.
- Add a mii_phy_dev_attach() as a companion helper to mii_phy_dev_probe().
  The purpose of that function is to perform the common steps to attach
  a PHY driver instance and to hook it up to the miibus(4) instance and to
  optionally also handle the probing, addition and initialization of the
  supported media. So all a PHY driver without any special requirements
  has to do in its bus attach method is to call mii_phy_dev_attach()
  along with PHY-specific MIIF_* flags, a pointer to its PHY functions
  and the add_media set to one. All PHY drivers were updated to take
  advantage of mii_phy_dev_attach() as appropriate. Along with these
  changes the capability mask was added to the mii_softc structure so
  PHY drivers taking advantage of mii_phy_dev_attach() but still
  handling media on their own do not need to fiddle with the MII attach
  arguments anyway.
- Keep track of the PHY offset in the mii_softc structure. This is done
  for compatibility with NetBSD/OpenBSD.
- Keep track of the PHY's OUI, model and revision in the mii_softc
  structure. Several PHY drivers require this information also after
  attaching and previously had to wrap their own softc around mii_softc.
  NetBSD/OpenBSD also keep track of the model and revision on their
  mii_softc structure. All PHY drivers were updated to take advantage
  as appropriate.
- Convert the mebers of the MII data structure to unsigned where
  appropriate. This is partly inspired by NetBSD/OpenBSD.
- According to IEEE 802.3-2002 the bits actually have to be reversed
  when mapping an OUI to the MII ID registers. All PHY drivers and
  miidevs where changed as necessary. Actually this now again allows to
  largely share miidevs with NetBSD, which fixed this problem already
  9 years ago. Consequently miidevs was synced as far as possible.
- Add MIIF_NOMANPAUSE and mii_phy_flowstatus() calls to drivers that
  weren't explicitly converted to support flow control before. It's
  unclear whether flow control actually works with these but typically
  it should and their net behavior should be more correct with these
  changes in place than without if the MAC driver sets MIIF_DOPAUSE.

Obtained from:	NetBSD (partially)
Reviewed by:	yongari (earlier version), silence on arch@ and net@
2011-05-03 19:51:29 +00:00

920 lines
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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/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include "usbdevs.h"
#define USB_DEBUG_VAR rue_debug
#include <dev/usb/usb_debug.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/net/usb_ethernet.h>
#include <dev/usb/net/if_ruereg.h>
#ifdef USB_DEBUG
static int rue_debug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, rue, CTLFLAG_RW, 0, "USB rue");
SYSCTL_INT(_hw_usb_rue, OID_AUTO, debug, CTLFLAG_RW,
&rue_debug, 0, "Debug level");
#endif
/*
* Various supported device vendors/products.
*/
static const struct usb_device_id rue_devs[] = {
{USB_VPI(USB_VENDOR_MELCO, USB_PRODUCT_MELCO_LUAKTX, 0)},
{USB_VPI(USB_VENDOR_REALTEK, USB_PRODUCT_REALTEK_USBKR100, 0)},
{USB_VPI(USB_VENDOR_OQO, USB_PRODUCT_OQO_ETHER01, 0)},
};
/* prototypes */
static device_probe_t rue_probe;
static device_attach_t rue_attach;
static device_detach_t rue_detach;
static miibus_readreg_t rue_miibus_readreg;
static miibus_writereg_t rue_miibus_writereg;
static miibus_statchg_t rue_miibus_statchg;
static usb_callback_t rue_intr_callback;
static usb_callback_t rue_bulk_read_callback;
static usb_callback_t rue_bulk_write_callback;
static uether_fn_t rue_attach_post;
static uether_fn_t rue_init;
static uether_fn_t rue_stop;
static uether_fn_t rue_start;
static uether_fn_t rue_tick;
static uether_fn_t rue_setmulti;
static uether_fn_t rue_setpromisc;
static int rue_read_mem(struct rue_softc *, uint16_t, void *, int);
static int rue_write_mem(struct rue_softc *, uint16_t, void *, int);
static uint8_t rue_csr_read_1(struct rue_softc *, uint16_t);
static uint16_t rue_csr_read_2(struct rue_softc *, uint16_t);
static int rue_csr_write_1(struct rue_softc *, uint16_t, uint8_t);
static int rue_csr_write_2(struct rue_softc *, uint16_t, uint16_t);
static int rue_csr_write_4(struct rue_softc *, int, uint32_t);
static void rue_reset(struct rue_softc *);
static int rue_ifmedia_upd(struct ifnet *);
static void rue_ifmedia_sts(struct ifnet *, struct ifmediareq *);
static const struct usb_config rue_config[RUE_N_TRANSFER] = {
[RUE_BULK_DT_WR] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_OUT,
.bufsize = MCLBYTES,
.flags = {.pipe_bof = 1,.force_short_xfer = 1,},
.callback = rue_bulk_write_callback,
.timeout = 10000, /* 10 seconds */
},
[RUE_BULK_DT_RD] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.bufsize = (MCLBYTES + 4),
.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
.callback = rue_bulk_read_callback,
.timeout = 0, /* no timeout */
},
[RUE_INTR_DT_RD] = {
.type = UE_INTERRUPT,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
.bufsize = 0, /* use wMaxPacketSize */
.callback = rue_intr_callback,
},
};
static device_method_t rue_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, rue_probe),
DEVMETHOD(device_attach, rue_attach),
DEVMETHOD(device_detach, rue_detach),
/* 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 = {
.name = "rue",
.methods = rue_methods,
.size = sizeof(struct rue_softc),
};
static devclass_t rue_devclass;
DRIVER_MODULE(rue, uhub, rue_driver, rue_devclass, NULL, 0);
DRIVER_MODULE(miibus, rue, miibus_driver, miibus_devclass, 0, 0);
MODULE_DEPEND(rue, uether, 1, 1, 1);
MODULE_DEPEND(rue, usb, 1, 1, 1);
MODULE_DEPEND(rue, ether, 1, 1, 1);
MODULE_DEPEND(rue, miibus, 1, 1, 1);
MODULE_VERSION(rue, 1);
static const struct usb_ether_methods rue_ue_methods = {
.ue_attach_post = rue_attach_post,
.ue_start = rue_start,
.ue_init = rue_init,
.ue_stop = rue_stop,
.ue_tick = rue_tick,
.ue_setmulti = rue_setmulti,
.ue_setpromisc = rue_setpromisc,
.ue_mii_upd = rue_ifmedia_upd,
.ue_mii_sts = rue_ifmedia_sts,
};
#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))
static int
rue_read_mem(struct rue_softc *sc, uint16_t addr, void *buf, int len)
{
struct usb_device_request req;
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = UR_SET_ADDRESS;
USETW(req.wValue, addr);
USETW(req.wIndex, 0);
USETW(req.wLength, len);
return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
}
static int
rue_write_mem(struct rue_softc *sc, uint16_t addr, void *buf, int len)
{
struct usb_device_request req;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = UR_SET_ADDRESS;
USETW(req.wValue, addr);
USETW(req.wIndex, 0);
USETW(req.wLength, len);
return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
}
static uint8_t
rue_csr_read_1(struct rue_softc *sc, uint16_t reg)
{
uint8_t val;
rue_read_mem(sc, reg, &val, 1);
return (val);
}
static uint16_t
rue_csr_read_2(struct rue_softc *sc, uint16_t reg)
{
uint8_t val[2];
rue_read_mem(sc, reg, &val, 2);
return (UGETW(val));
}
static int
rue_csr_write_1(struct rue_softc *sc, uint16_t reg, uint8_t val)
{
return (rue_write_mem(sc, reg, &val, 1));
}
static int
rue_csr_write_2(struct rue_softc *sc, uint16_t reg, uint16_t val)
{
uint8_t temp[2];
USETW(temp, val);
return (rue_write_mem(sc, reg, &temp, 2));
}
static int
rue_csr_write_4(struct rue_softc *sc, int reg, uint32_t val)
{
uint8_t temp[4];
USETDW(temp, val);
return (rue_write_mem(sc, reg, &temp, 4));
}
static int
rue_miibus_readreg(device_t dev, int phy, int reg)
{
struct rue_softc *sc = device_get_softc(dev);
uint16_t rval;
uint16_t ruereg;
int locked;
if (phy != 0) /* RTL8150 supports PHY == 0, only */
return (0);
locked = mtx_owned(&sc->sc_mtx);
if (!locked)
RUE_LOCK(sc);
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:
rval = 0;
goto done;
default:
if (RUE_REG_MIN <= reg && reg <= RUE_REG_MAX) {
rval = rue_csr_read_1(sc, reg);
goto done;
}
device_printf(sc->sc_ue.ue_dev, "bad phy register\n");
rval = 0;
goto done;
}
rval = rue_csr_read_2(sc, ruereg);
done:
if (!locked)
RUE_UNLOCK(sc);
return (rval);
}
static int
rue_miibus_writereg(device_t dev, int phy, int reg, int data)
{
struct rue_softc *sc = device_get_softc(dev);
uint16_t ruereg;
int locked;
if (phy != 0) /* RTL8150 supports PHY == 0, only */
return (0);
locked = mtx_owned(&sc->sc_mtx);
if (!locked)
RUE_LOCK(sc);
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:
goto done;
default:
if (RUE_REG_MIN <= reg && reg <= RUE_REG_MAX) {
rue_csr_write_1(sc, reg, data);
goto done;
}
device_printf(sc->sc_ue.ue_dev, " bad phy register\n");
goto done;
}
rue_csr_write_2(sc, ruereg, data);
done:
if (!locked)
RUE_UNLOCK(sc);
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);
uint16_t bmcr;
int locked;
locked = mtx_owned(&sc->sc_mtx);
if (!locked)
RUE_LOCK(sc);
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));
if (!locked)
RUE_UNLOCK(sc);
#endif
}
static void
rue_setpromisc(struct usb_ether *ue)
{
struct rue_softc *sc = uether_getsc(ue);
struct ifnet *ifp = uether_getifp(ue);
RUE_LOCK_ASSERT(sc, MA_OWNED);
/* If we want promiscuous mode, set the allframes bit. */
if (ifp->if_flags & IFF_PROMISC)
RUE_SETBIT(sc, RUE_RCR, RUE_RCR_AAP);
else
RUE_CLRBIT(sc, RUE_RCR, RUE_RCR_AAP);
}
/*
* Program the 64-bit multicast hash filter.
*/
static void
rue_setmulti(struct usb_ether *ue)
{
struct rue_softc *sc = uether_getsc(ue);
struct ifnet *ifp = uether_getifp(ue);
uint16_t rxcfg;
int h = 0;
uint32_t hashes[2] = { 0, 0 };
struct ifmultiaddr *ifma;
int mcnt = 0;
RUE_LOCK_ASSERT(sc, MA_OWNED);
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_maddr_rlock(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_maddr_runlock(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++) {
if (uether_pause(&sc->sc_ue, hz / 1000))
break;
if (!(rue_csr_read_1(sc, RUE_CR) & RUE_CR_SOFT_RST))
break;
}
if (i == RUE_TIMEOUT)
device_printf(sc->sc_ue.ue_dev, "reset never completed\n");
uether_pause(&sc->sc_ue, hz / 100);
}
static void
rue_attach_post(struct usb_ether *ue)
{
struct rue_softc *sc = uether_getsc(ue);
/* reset the adapter */
rue_reset(sc);
/* get station address from the EEPROM */
rue_read_mem(sc, RUE_EEPROM_IDR0, ue->ue_eaddr, ETHER_ADDR_LEN);
}
/*
* Probe for a RTL8150 chip.
*/
static int
rue_probe(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
if (uaa->usb_mode != USB_MODE_HOST)
return (ENXIO);
if (uaa->info.bConfigIndex != RUE_CONFIG_IDX)
return (ENXIO);
if (uaa->info.bIfaceIndex != RUE_IFACE_IDX)
return (ENXIO);
return (usbd_lookup_id_by_uaa(rue_devs, sizeof(rue_devs), uaa));
}
/*
* Attach the interface. Allocate softc structures, do ifmedia
* setup and ethernet/BPF attach.
*/
static int
rue_attach(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
struct rue_softc *sc = device_get_softc(dev);
struct usb_ether *ue = &sc->sc_ue;
uint8_t iface_index;
int error;
device_set_usb_desc(dev);
mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
iface_index = RUE_IFACE_IDX;
error = usbd_transfer_setup(uaa->device, &iface_index,
sc->sc_xfer, rue_config, RUE_N_TRANSFER,
sc, &sc->sc_mtx);
if (error) {
device_printf(dev, "allocating USB transfers failed\n");
goto detach;
}
ue->ue_sc = sc;
ue->ue_dev = dev;
ue->ue_udev = uaa->device;
ue->ue_mtx = &sc->sc_mtx;
ue->ue_methods = &rue_ue_methods;
error = uether_ifattach(ue);
if (error) {
device_printf(dev, "could not attach interface\n");
goto detach;
}
return (0); /* success */
detach:
rue_detach(dev);
return (ENXIO); /* failure */
}
static int
rue_detach(device_t dev)
{
struct rue_softc *sc = device_get_softc(dev);
struct usb_ether *ue = &sc->sc_ue;
usbd_transfer_unsetup(sc->sc_xfer, RUE_N_TRANSFER);
uether_ifdetach(ue);
mtx_destroy(&sc->sc_mtx);
return (0);
}
static void
rue_intr_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct rue_softc *sc = usbd_xfer_softc(xfer);
struct ifnet *ifp = uether_getifp(&sc->sc_ue);
struct rue_intrpkt pkt;
struct usb_page_cache *pc;
int actlen;
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
if (ifp && (ifp->if_drv_flags & IFF_DRV_RUNNING) &&
actlen >= sizeof(pkt)) {
pc = usbd_xfer_get_frame(xfer, 0);
usbd_copy_out(pc, 0, &pkt, sizeof(pkt));
ifp->if_ierrors += pkt.rue_rxlost_cnt;
ifp->if_ierrors += pkt.rue_crcerr_cnt;
ifp->if_collisions += pkt.rue_col_cnt;
}
/* FALLTHROUGH */
case USB_ST_SETUP:
tr_setup:
usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
usbd_transfer_submit(xfer);
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
rue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct rue_softc *sc = usbd_xfer_softc(xfer);
struct usb_ether *ue = &sc->sc_ue;
struct ifnet *ifp = uether_getifp(ue);
struct usb_page_cache *pc;
uint16_t status;
int actlen;
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
if (actlen < 4) {
ifp->if_ierrors++;
goto tr_setup;
}
pc = usbd_xfer_get_frame(xfer, 0);
usbd_copy_out(pc, actlen - 4, &status, sizeof(status));
actlen -= 4;
/* check recieve packet was valid or not */
status = le16toh(status);
if ((status & RUE_RXSTAT_VALID) == 0) {
ifp->if_ierrors++;
goto tr_setup;
}
uether_rxbuf(ue, pc, 0, actlen);
/* FALLTHROUGH */
case USB_ST_SETUP:
tr_setup:
usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
usbd_transfer_submit(xfer);
uether_rxflush(ue);
return;
default: /* Error */
DPRINTF("bulk read error, %s\n",
usbd_errstr(error));
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
rue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct rue_softc *sc = usbd_xfer_softc(xfer);
struct ifnet *ifp = uether_getifp(&sc->sc_ue);
struct usb_page_cache *pc;
struct mbuf *m;
int temp_len;
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
DPRINTFN(11, "transfer complete\n");
ifp->if_opackets++;
/* FALLTHROUGH */
case USB_ST_SETUP:
tr_setup:
if ((sc->sc_flags & RUE_FLAG_LINK) == 0) {
/*
* don't send anything if there is no link !
*/
return;
}
IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
if (m == NULL)
return;
if (m->m_pkthdr.len > MCLBYTES)
m->m_pkthdr.len = MCLBYTES;
temp_len = m->m_pkthdr.len;
pc = usbd_xfer_get_frame(xfer, 0);
usbd_m_copy_in(pc, 0, m, 0, 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 (temp_len < RUE_MIN_FRAMELEN) {
usbd_frame_zero(pc, temp_len,
RUE_MIN_FRAMELEN - temp_len);
temp_len = RUE_MIN_FRAMELEN;
}
usbd_xfer_set_frame_len(xfer, 0, temp_len);
/*
* if there's a BPF listener, bounce a copy
* of this frame to him:
*/
BPF_MTAP(ifp, m);
m_freem(m);
usbd_transfer_submit(xfer);
return;
default: /* Error */
DPRINTFN(11, "transfer error, %s\n",
usbd_errstr(error));
ifp->if_oerrors++;
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
rue_tick(struct usb_ether *ue)
{
struct rue_softc *sc = uether_getsc(ue);
struct mii_data *mii = GET_MII(sc);
RUE_LOCK_ASSERT(sc, MA_OWNED);
mii_tick(mii);
if ((sc->sc_flags & RUE_FLAG_LINK) == 0
&& mii->mii_media_status & IFM_ACTIVE &&
IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
sc->sc_flags |= RUE_FLAG_LINK;
rue_start(ue);
}
}
static void
rue_start(struct usb_ether *ue)
{
struct rue_softc *sc = uether_getsc(ue);
/*
* start the USB transfers, if not already started:
*/
usbd_transfer_start(sc->sc_xfer[RUE_INTR_DT_RD]);
usbd_transfer_start(sc->sc_xfer[RUE_BULK_DT_RD]);
usbd_transfer_start(sc->sc_xfer[RUE_BULK_DT_WR]);
}
static void
rue_init(struct usb_ether *ue)
{
struct rue_softc *sc = uether_getsc(ue);
struct ifnet *ifp = uether_getifp(ue);
RUE_LOCK_ASSERT(sc, MA_OWNED);
/*
* Cancel pending I/O
*/
rue_reset(sc);
/* Set MAC address */
rue_write_mem(sc, RUE_IDR0, IF_LLADDR(ifp), ETHER_ADDR_LEN);
rue_stop(ue);
/*
* Set the initial TX and RX configuration.
*/
rue_csr_write_1(sc, RUE_TCR, RUE_TCR_CONFIG);
rue_csr_write_2(sc, RUE_RCR, RUE_RCR_CONFIG|RUE_RCR_AB);
/* Load the multicast filter */
rue_setpromisc(ue);
/* Load the multicast filter. */
rue_setmulti(ue);
/* Enable RX and TX */
rue_csr_write_1(sc, RUE_CR, (RUE_CR_TE | RUE_CR_RE | RUE_CR_EP3CLREN));
usbd_xfer_set_stall(sc->sc_xfer[RUE_BULK_DT_WR]);
ifp->if_drv_flags |= IFF_DRV_RUNNING;
rue_start(ue);
}
/*
* 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);
struct mii_softc *miisc;
RUE_LOCK_ASSERT(sc, MA_OWNED);
sc->sc_flags &= ~RUE_FLAG_LINK;
LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
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);
RUE_LOCK(sc);
mii_pollstat(mii);
RUE_UNLOCK(sc);
ifmr->ifm_active = mii->mii_media_active;
ifmr->ifm_status = mii->mii_media_status;
}
static void
rue_stop(struct usb_ether *ue)
{
struct rue_softc *sc = uether_getsc(ue);
struct ifnet *ifp = uether_getifp(ue);
RUE_LOCK_ASSERT(sc, MA_OWNED);
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
sc->sc_flags &= ~RUE_FLAG_LINK;
/*
* stop all the transfers, if not already stopped:
*/
usbd_transfer_stop(sc->sc_xfer[RUE_BULK_DT_WR]);
usbd_transfer_stop(sc->sc_xfer[RUE_BULK_DT_RD]);
usbd_transfer_stop(sc->sc_xfer[RUE_INTR_DT_RD]);
rue_csr_write_1(sc, RUE_CR, 0x00);
rue_reset(sc);
}
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