Annotation of sys/dev/mii/lxtphy.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: lxtphy.c,v 1.15 2006/12/27 19:11:09 kettenis Exp $ */
! 2: /* $NetBSD: lxtphy.c,v 1.19 2000/02/02 23:34:57 thorpej Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
! 10: * NASA Ames Research Center.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. All advertising materials mentioning features or use of this software
! 21: * must display the following acknowledgement:
! 22: * This product includes software developed by the NetBSD
! 23: * Foundation, Inc. and its contributors.
! 24: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 25: * contributors may be used to endorse or promote products derived
! 26: * from this software without specific prior written permission.
! 27: *
! 28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 38: * POSSIBILITY OF SUCH DAMAGE.
! 39: */
! 40:
! 41: /*
! 42: * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
! 43: *
! 44: * Redistribution and use in source and binary forms, with or without
! 45: * modification, are permitted provided that the following conditions
! 46: * are met:
! 47: * 1. Redistributions of source code must retain the above copyright
! 48: * notice, this list of conditions and the following disclaimer.
! 49: * 2. Redistributions in binary form must reproduce the above copyright
! 50: * notice, this list of conditions and the following disclaimer in the
! 51: * documentation and/or other materials provided with the distribution.
! 52: * 3. All advertising materials mentioning features or use of this software
! 53: * must display the following acknowledgement:
! 54: * This product includes software developed by Manuel Bouyer.
! 55: * 4. The name of the author may not be used to endorse or promote products
! 56: * derived from this software without specific prior written permission.
! 57: *
! 58: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 59: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 60: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 61: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 62: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 63: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 64: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 65: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 66: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 67: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 68: */
! 69:
! 70: /*
! 71: * driver for Level One's LXT-970/971 ethernet 10/100 PHY
! 72: * datasheet from www.level1.com
! 73: */
! 74:
! 75: #include <sys/param.h>
! 76: #include <sys/systm.h>
! 77: #include <sys/kernel.h>
! 78: #include <sys/device.h>
! 79: #include <sys/socket.h>
! 80: #include <sys/errno.h>
! 81:
! 82: #include <net/if.h>
! 83: #include <net/if_media.h>
! 84:
! 85: #include <dev/mii/mii.h>
! 86: #include <dev/mii/miivar.h>
! 87: #include <dev/mii/miidevs.h>
! 88:
! 89: #include <dev/mii/lxtphyreg.h>
! 90:
! 91: int lxtphymatch(struct device *, void *, void *);
! 92: void lxtphyattach(struct device *, struct device *, void *);
! 93:
! 94: struct cfattach lxtphy_ca = {
! 95: sizeof(struct mii_softc), lxtphymatch, lxtphyattach, mii_phy_detach,
! 96: mii_phy_activate
! 97: };
! 98:
! 99: struct cfdriver lxtphy_cd = {
! 100: NULL, "lxtphy", DV_DULL
! 101: };
! 102:
! 103: int lxtphy_service(struct mii_softc *, struct mii_data *, int);
! 104: void lxtphy_status(struct mii_softc *);
! 105: void lxtphy_reset(struct mii_softc *);
! 106:
! 107: const struct mii_phy_funcs lxtphy_funcs = {
! 108: lxtphy_service, lxtphy_status, lxtphy_reset,
! 109: };
! 110:
! 111: const struct mii_phy_funcs lxtphy971_funcs = {
! 112: lxtphy_service, ukphy_status, lxtphy_reset,
! 113: };
! 114:
! 115: static const struct mii_phydesc lxtphys[] = {
! 116: { MII_OUI_xxLEVEL1, MII_MODEL_xxLEVEL1_LXT970,
! 117: MII_STR_xxLEVEL1_LXT970 },
! 118: { MII_OUI_xxLEVEL1a, MII_MODEL_xxLEVEL1a_LXT971,
! 119: MII_STR_xxLEVEL1a_LXT971 },
! 120:
! 121: { 0, 0,
! 122: NULL },
! 123: };
! 124:
! 125: int
! 126: lxtphymatch(parent, match, aux)
! 127: struct device *parent;
! 128: void *match;
! 129: void *aux;
! 130: {
! 131: struct mii_attach_args *ma = aux;
! 132:
! 133: if (mii_phy_match(ma, lxtphys) != NULL)
! 134: return (10);
! 135:
! 136: return (0);
! 137: }
! 138:
! 139: void
! 140: lxtphyattach(parent, self, aux)
! 141: struct device *parent, *self;
! 142: void *aux;
! 143: {
! 144: struct mii_softc *sc = (struct mii_softc *)self;
! 145: struct mii_attach_args *ma = aux;
! 146: struct mii_data *mii = ma->mii_data;
! 147: const struct mii_phydesc *mpd;
! 148:
! 149: if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1 &&
! 150: MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1_LXT970) {
! 151: sc->mii_funcs = &lxtphy_funcs;
! 152: }
! 153: if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1a &&
! 154: MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1a_LXT971) {
! 155: sc->mii_funcs = &lxtphy971_funcs;
! 156: }
! 157:
! 158: mpd = mii_phy_match(ma, lxtphys);
! 159: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
! 160:
! 161: sc->mii_inst = mii->mii_instance;
! 162: sc->mii_phy = ma->mii_phyno;
! 163: sc->mii_pdata = mii;
! 164: sc->mii_flags = ma->mii_flags;
! 165:
! 166: PHY_RESET(sc);
! 167:
! 168: sc->mii_capabilities =
! 169: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
! 170: if (sc->mii_capabilities & BMSR_MEDIAMASK)
! 171: mii_phy_add_media(sc);
! 172: }
! 173:
! 174: int
! 175: lxtphy_service(sc, mii, cmd)
! 176: struct mii_softc *sc;
! 177: struct mii_data *mii;
! 178: int cmd;
! 179: {
! 180: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 181: int reg;
! 182:
! 183: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
! 184: return (ENXIO);
! 185:
! 186: switch (cmd) {
! 187: case MII_POLLSTAT:
! 188: /*
! 189: * If we're not polling our PHY instance, just return.
! 190: */
! 191: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 192: return (0);
! 193: break;
! 194:
! 195: case MII_MEDIACHG:
! 196: /*
! 197: * If the media indicates a different PHY instance,
! 198: * isolate ourselves.
! 199: */
! 200: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
! 201: reg = PHY_READ(sc, MII_BMCR);
! 202: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
! 203: return (0);
! 204: }
! 205:
! 206: /*
! 207: * If the interface is not up, don't do anything.
! 208: */
! 209: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
! 210: break;
! 211:
! 212: mii_phy_setmedia(sc);
! 213: break;
! 214:
! 215: case MII_TICK:
! 216: /*
! 217: * If we're not currently selected, just return.
! 218: */
! 219: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 220: return (0);
! 221:
! 222: if (mii_phy_tick(sc) == EJUSTRETURN)
! 223: return (0);
! 224: break;
! 225:
! 226: case MII_DOWN:
! 227: mii_phy_down(sc);
! 228: return (0);
! 229: }
! 230:
! 231: /* Update the media status. */
! 232: mii_phy_status(sc);
! 233:
! 234: /* Callback if something changed. */
! 235: mii_phy_update(sc, cmd);
! 236: return (0);
! 237: }
! 238:
! 239: void
! 240: lxtphy_status(sc)
! 241: struct mii_softc *sc;
! 242: {
! 243: struct mii_data *mii = sc->mii_pdata;
! 244: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 245: int bmcr, bmsr, csr;
! 246:
! 247: mii->mii_media_status = IFM_AVALID;
! 248: mii->mii_media_active = IFM_ETHER;
! 249:
! 250: /*
! 251: * Get link status from the CSR; we need to read the CSR
! 252: * for media type anyhow, and the link status in the CSR
! 253: * doens't latch, so fewer register reads are required.
! 254: */
! 255: csr = PHY_READ(sc, MII_LXTPHY_CSR);
! 256: if (csr & CSR_LINK)
! 257: mii->mii_media_status |= IFM_ACTIVE;
! 258:
! 259: bmcr = PHY_READ(sc, MII_BMCR);
! 260: if (bmcr & BMCR_ISO) {
! 261: mii->mii_media_active |= IFM_NONE;
! 262: mii->mii_media_status = 0;
! 263: return;
! 264: }
! 265:
! 266: if (bmcr & BMCR_LOOP)
! 267: mii->mii_media_active |= IFM_LOOP;
! 268:
! 269: if (bmcr & BMCR_AUTOEN) {
! 270: bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
! 271: if ((bmsr & BMSR_ACOMP) == 0) {
! 272: /* Erg, still trying, I guess... */
! 273: mii->mii_media_active |= IFM_NONE;
! 274: return;
! 275: }
! 276: if (csr & CSR_SPEED)
! 277: mii->mii_media_active |= IFM_100_TX;
! 278: else
! 279: mii->mii_media_active |= IFM_10_T;
! 280:
! 281: if (csr & CSR_DUPLEX)
! 282: mii->mii_media_active |= IFM_FDX;
! 283: else
! 284: mii->mii_media_active |= IFM_HDX;
! 285: } else
! 286: mii->mii_media_active = ife->ifm_media;
! 287: }
! 288:
! 289: void
! 290: lxtphy_reset(sc)
! 291: struct mii_softc *sc;
! 292: {
! 293: mii_phy_reset(sc);
! 294: PHY_WRITE(sc, MII_LXTPHY_IER,
! 295: PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN);
! 296: }
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