Annotation of sys/dev/mii/iophy.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: iophy.c,v 1.13 2006/12/27 19:11:08 kettenis Exp $ */
! 2: /* $NetBSD: iophy.c,v 1.8 2000/02/02 23:34:56 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: * Intel 82553 PHY driver
! 72: */
! 73:
! 74: #include <sys/param.h>
! 75: #include <sys/systm.h>
! 76: #include <sys/kernel.h>
! 77: #include <sys/device.h>
! 78: #include <sys/socket.h>
! 79:
! 80: #include <net/if.h>
! 81: #include <net/if_media.h>
! 82:
! 83: #include <dev/mii/mii.h>
! 84: #include <dev/mii/miivar.h>
! 85: #include <dev/mii/miidevs.h>
! 86:
! 87: #include <dev/mii/iophyreg.h>
! 88:
! 89: int iophymatch(struct device *, void *, void *);
! 90: void iophyattach(struct device *, struct device *, void *);
! 91:
! 92: struct cfattach iophy_ca = {
! 93: sizeof(struct mii_softc), iophymatch, iophyattach, mii_phy_detach,
! 94: mii_phy_activate
! 95: };
! 96:
! 97: struct cfdriver iophy_cd = {
! 98: NULL, "iophy", DV_DULL
! 99: };
! 100:
! 101: int iophy_service(struct mii_softc *, struct mii_data *, int);
! 102: void iophy_status(struct mii_softc *);
! 103:
! 104: const struct mii_phy_funcs iophy_funcs = {
! 105: iophy_service, iophy_status, mii_phy_reset,
! 106: };
! 107:
! 108: static const struct mii_phydesc iophys[] = {
! 109: { MII_OUI_xxINTEL, MII_MODEL_xxINTEL_I82553,
! 110: MII_STR_xxINTEL_I82553 },
! 111: { MII_OUI_INTEL, MII_MODEL_INTEL_I82553,
! 112: MII_STR_INTEL_I82553 },
! 113:
! 114: { 0, 0,
! 115: NULL },
! 116:
! 117: };
! 118:
! 119: int
! 120: iophymatch(parent, match, aux)
! 121: struct device *parent;
! 122: void *match;
! 123: void *aux;
! 124: {
! 125: struct mii_attach_args *ma = aux;
! 126:
! 127: if (mii_phy_match(ma, iophys) != NULL)
! 128: return (10);
! 129:
! 130: return (0);
! 131: }
! 132:
! 133: void
! 134: iophyattach(parent, self, aux)
! 135: struct device *parent, *self;
! 136: void *aux;
! 137: {
! 138: struct mii_softc *sc = (struct mii_softc *)self;
! 139: struct mii_attach_args *ma = aux;
! 140: struct mii_data *mii = ma->mii_data;
! 141: const struct mii_phydesc *mpd;
! 142:
! 143: mpd = mii_phy_match(ma, iophys);
! 144: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
! 145:
! 146: sc->mii_inst = mii->mii_instance;
! 147: sc->mii_phy = ma->mii_phyno;
! 148: sc->mii_funcs = &iophy_funcs;
! 149: sc->mii_pdata = mii;
! 150: sc->mii_flags = ma->mii_flags;
! 151:
! 152: PHY_RESET(sc);
! 153:
! 154: sc->mii_capabilities =
! 155: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
! 156: if (sc->mii_capabilities & BMSR_MEDIAMASK)
! 157: mii_phy_add_media(sc);
! 158: }
! 159:
! 160: int
! 161: iophy_service(sc, mii, cmd)
! 162: struct mii_softc *sc;
! 163: struct mii_data *mii;
! 164: int cmd;
! 165: {
! 166: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 167: int reg;
! 168:
! 169: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
! 170: return (ENXIO);
! 171:
! 172: switch (cmd) {
! 173: case MII_POLLSTAT:
! 174: /*
! 175: * If we're not polling our PHY instance, just return.
! 176: */
! 177: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 178: return (0);
! 179: break;
! 180:
! 181: case MII_MEDIACHG:
! 182: /*
! 183: * If the media indicates a different PHY instance,
! 184: * isolate ourselves.
! 185: */
! 186: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
! 187: reg = PHY_READ(sc, MII_BMCR);
! 188: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
! 189: return (0);
! 190: }
! 191:
! 192: /*
! 193: * If the interface is not up, don't do anything.
! 194: */
! 195: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
! 196: break;
! 197:
! 198: mii_phy_setmedia(sc);
! 199: break;
! 200:
! 201: case MII_TICK:
! 202: /*
! 203: * If we're not currently selected, just return.
! 204: */
! 205: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 206: return (0);
! 207:
! 208: if (mii_phy_tick(sc) == EJUSTRETURN)
! 209: return (0);
! 210: break;
! 211:
! 212: case MII_DOWN:
! 213: mii_phy_down(sc);
! 214: return (0);
! 215: }
! 216:
! 217: /* Update the media status. */
! 218: mii_phy_status(sc);
! 219:
! 220: /* Callback if something changed. */
! 221: mii_phy_update(sc, cmd);
! 222: return (0);
! 223: }
! 224:
! 225: void
! 226: iophy_status(sc)
! 227: struct mii_softc *sc;
! 228: {
! 229: struct mii_data *mii = sc->mii_pdata;
! 230: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 231: int bmsr, bmcr, ext0;
! 232:
! 233: mii->mii_media_status = IFM_AVALID;
! 234: mii->mii_media_active = IFM_ETHER;
! 235:
! 236: bmsr = PHY_READ(sc, MII_BMSR) |
! 237: PHY_READ(sc, MII_BMSR);
! 238: if (bmsr & BMSR_LINK)
! 239: mii->mii_media_status |= IFM_ACTIVE;
! 240:
! 241: bmcr = PHY_READ(sc, MII_BMCR);
! 242: if (bmcr & BMCR_ISO) {
! 243: mii->mii_media_active |= IFM_NONE;
! 244: mii->mii_media_status = 0;
! 245: return;
! 246: }
! 247:
! 248: if (bmcr & BMCR_LOOP)
! 249: mii->mii_media_active |= IFM_LOOP;
! 250:
! 251: if (bmcr & BMCR_AUTOEN) {
! 252: if ((bmsr & BMSR_ACOMP) == 0) {
! 253: /* Erg, still trying, I guess... */
! 254: mii->mii_media_active |= IFM_NONE;
! 255: return;
! 256: }
! 257:
! 258: ext0 = PHY_READ(sc, MII_IOPHY_EXT0);
! 259: if (ext0 & EXT0_SPEED) {
! 260: if (bmsr & BMSR_100T4) {
! 261: mii->mii_media_active |= IFM_100_T4;
! 262: return;
! 263: } else
! 264: mii->mii_media_active |= IFM_100_TX;
! 265: } else
! 266: mii->mii_media_active |= IFM_10_T;
! 267:
! 268: if (ext0 & EXT0_DUPLEX)
! 269: mii->mii_media_active |= IFM_FDX;
! 270: else
! 271: mii->mii_media_active |= IFM_HDX;
! 272: } else
! 273: mii->mii_media_active = ife->ifm_media;
! 274: }
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