diff options
Diffstat (limited to 'sys/dev/mii/rlphy.c')
| -rw-r--r-- | sys/dev/mii/rlphy.c | 352 |
1 files changed, 352 insertions, 0 deletions
diff --git a/sys/dev/mii/rlphy.c b/sys/dev/mii/rlphy.c new file mode 100644 index 0000000..9df26eb --- /dev/null +++ b/sys/dev/mii/rlphy.c @@ -0,0 +1,352 @@ +/* + * Copyright (c) 1997, 1998, 1999 + * Bill Paul <wpaul@ctr.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. + * + * $FreeBSD$ + */ + +/* + * driver for RealTek 8139 internal PHYs + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/socket.h> +#include <sys/bus.h> + +#include <net/if.h> +#include <net/if_arp.h> +#include <net/if_media.h> + +#include <dev/mii/mii.h> +#include <dev/mii/miivar.h> +#include <dev/mii/miidevs.h> + +#include <machine/bus.h> +#include <pci/if_rlreg.h> + +#include "miibus_if.h" + +#if !defined(lint) +static const char rcsid[] = + "$FreeBSD$"; +#endif + +static int rlphy_probe(device_t); +static int rlphy_attach(device_t); + +static device_method_t rlphy_methods[] = { + /* device interface */ + DEVMETHOD(device_probe, rlphy_probe), + DEVMETHOD(device_attach, rlphy_attach), + DEVMETHOD(device_detach, mii_phy_detach), + DEVMETHOD(device_shutdown, bus_generic_shutdown), + { 0, 0 } +}; + +static devclass_t rlphy_devclass; + +static driver_t rlphy_driver = { + "rlphy", + rlphy_methods, + sizeof(struct mii_softc) +}; + +DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0); + +static int rlphy_service(struct mii_softc *, struct mii_data *, int); +static void rlphy_status(struct mii_softc *); + +static int +rlphy_probe(dev) + device_t dev; +{ + struct mii_attach_args *ma; + device_t parent; + + ma = device_get_ivars(dev); + parent = device_get_parent(device_get_parent(dev)); + + /* Test for RealTek 8201L PHY */ + if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_REALTEK && + MII_MODEL(ma->mii_id2) == MII_MODEL_REALTEK_RTL8201L) { + device_set_desc(dev, MII_STR_REALTEK_RTL8201L); + return(0); + } + + /* + * RealTek PHY doesn't have vendor/device ID registers: + * the rl driver fakes up a return value of all zeros. + */ + if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || + MII_MODEL(ma->mii_id2) != 0) + return (ENXIO); + + /* + * Make sure the parent is an `rl'. + */ + if (strcmp(device_get_name(parent), "rl") != 0) + return (ENXIO); + + device_set_desc(dev, "RealTek internal media interface"); + + return (0); +} + +static int +rlphy_attach(dev) + device_t dev; +{ + struct mii_softc *sc; + struct mii_attach_args *ma; + struct mii_data *mii; + + sc = device_get_softc(dev); + ma = device_get_ivars(dev); + sc->mii_dev = device_get_parent(dev); + mii = device_get_softc(sc->mii_dev); + + /* + * The RealTek PHY can never be isolated, so never allow non-zero + * instances! + */ + if (mii->mii_instance != 0) { + device_printf(dev, "ignoring this PHY, non-zero instance\n"); + return(ENXIO); + } + + LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); + + sc->mii_inst = mii->mii_instance; + sc->mii_phy = ma->mii_phyno; + sc->mii_service = rlphy_service; + sc->mii_pdata = mii; + mii->mii_instance++; + + sc->mii_flags |= MIIF_NOISOLATE; + +#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) + +#if 0 /* See above. */ + ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), + BMCR_ISO); +#endif + + ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), + BMCR_LOOP|BMCR_S100); + + mii_phy_reset(sc); + + sc->mii_capabilities = + PHY_READ(sc, MII_BMSR) & ma->mii_capmask; + device_printf(dev, " "); + mii_add_media(sc); + printf("\n"); +#undef ADD + MIIBUS_MEDIAINIT(sc->mii_dev); + return(0); +} + +static int +rlphy_service(sc, mii, cmd) + struct mii_softc *sc; + struct mii_data *mii; + int cmd; +{ + struct ifmedia_entry *ife = mii->mii_media.ifm_cur; + + /* + * We can't isolate the RealTek PHY, so it has to be the only one! + */ + if (IFM_INST(ife->ifm_media) != sc->mii_inst) + panic("rlphy_service: can't isolate RealTek PHY"); + + switch (cmd) { + case MII_POLLSTAT: + break; + + case MII_MEDIACHG: + /* + * If the interface is not up, don't do anything. + */ + if ((mii->mii_ifp->if_flags & IFF_UP) == 0) + break; + + switch (IFM_SUBTYPE(ife->ifm_media)) { + case IFM_AUTO: + /* + * If we're already in auto mode, just return. + */ + if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) + return (0); + (void) mii_phy_auto(sc); + break; + case IFM_100_T4: + /* + * XXX Not supported as a manual setting right now. + */ + return (EINVAL); + default: + /* + * BMCR data is stored in the ifmedia entry. + */ + PHY_WRITE(sc, MII_ANAR, + mii_anar(ife->ifm_media)); + PHY_WRITE(sc, MII_BMCR, ife->ifm_data); + } + break; + + case MII_TICK: + /* + * Is the interface even up? + */ + if ((mii->mii_ifp->if_flags & IFF_UP) == 0) + return (0); + + /* + * Only used for autonegotiation. + */ + if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) + break; + + /* + * The RealTek PHY's autonegotiation doesn't need to be + * kicked; it continues in the background. + */ + break; + } + + /* Update the media status. */ + rlphy_status(sc); + + /* Callback if something changed. */ + mii_phy_update(sc, cmd); + return (0); +} + +static void +rlphy_status(phy) + struct mii_softc *phy; +{ + struct mii_data *mii = phy->mii_pdata; + int bmsr, bmcr, anlpar; + device_t parent; + + mii->mii_media_status = IFM_AVALID; + mii->mii_media_active = IFM_ETHER; + + bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); + if (bmsr & BMSR_LINK) + mii->mii_media_status |= IFM_ACTIVE; + + bmcr = PHY_READ(phy, MII_BMCR); + if (bmcr & BMCR_ISO) { + mii->mii_media_active |= IFM_NONE; + mii->mii_media_status = 0; + return; + } + + if (bmcr & BMCR_LOOP) + mii->mii_media_active |= IFM_LOOP; + + if (bmcr & BMCR_AUTOEN) { + /* + * NWay autonegotiation takes the highest-order common + * bit of the ANAR and ANLPAR (i.e. best media advertised + * both by us and our link partner). + */ + if ((bmsr & BMSR_ACOMP) == 0) { + /* Erg, still trying, I guess... */ + mii->mii_media_active |= IFM_NONE; + return; + } + + if ((anlpar = PHY_READ(phy, MII_ANAR) & + PHY_READ(phy, MII_ANLPAR))) { + if (anlpar & ANLPAR_T4) + mii->mii_media_active |= IFM_100_T4; + else if (anlpar & ANLPAR_TX_FD) + mii->mii_media_active |= IFM_100_TX|IFM_FDX; + else if (anlpar & ANLPAR_TX) + mii->mii_media_active |= IFM_100_TX; + else if (anlpar & ANLPAR_10_FD) + mii->mii_media_active |= IFM_10_T|IFM_FDX; + else if (anlpar & ANLPAR_10) + mii->mii_media_active |= IFM_10_T; + else + mii->mii_media_active |= IFM_NONE; + return; + } + /* + * If the other side doesn't support NWAY, then the + * best we can do is determine if we have a 10Mbps or + * 100Mbps link. There's no way to know if the link + * is full or half duplex, so we default to half duplex + * and hope that the user is clever enough to manually + * change the media settings if we're wrong. + */ + + + /* + * The RealTek PHY supports non-NWAY link speed + * detection, however it does not report the link + * detection results via the ANLPAR or BMSR registers. + * (What? RealTek doesn't do things the way everyone + * else does? I'm just shocked, shocked I tell you.) + * To determine the link speed, we have to do one + * of two things: + * + * - If this is a standalone RealTek RTL8201(L) PHY, + * we can determine the link speed by testing bit 0 + * in the magic, vendor-specific register at offset + * 0x19. + * + * - If this is a RealTek MAC with integrated PHY, we + * can test the 'SPEED10' bit of the MAC's media status + * register. + */ + parent = device_get_parent(phy->mii_dev); + if (strcmp(device_get_name(parent), "rl") != 0) { + if (PHY_READ(phy, 0x0019) & 0x01) + mii->mii_media_active |= IFM_100_TX; + else + mii->mii_media_active |= IFM_10_T; + } else { + if (PHY_READ(phy, RL_MEDIASTAT) & + RL_MEDIASTAT_SPEED10) + mii->mii_media_active |= IFM_10_T; + else + mii->mii_media_active |= IFM_100_TX; + } + + } else + mii->mii_media_active = mii_media_from_bmcr(bmcr); +} |
