Annotation of sys/dev/mii/qsphy.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: qsphy.c,v 1.14 2006/12/27 19:11:09 kettenis Exp $ */
! 2: /* $NetBSD: qsphy.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 Quality Semiconductor's QS6612 ethernet 10/100 PHY
! 72: * datasheet from www.qualitysemi.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:
! 81: #include <net/if.h>
! 82: #include <net/if_media.h>
! 83:
! 84: #include <dev/mii/mii.h>
! 85: #include <dev/mii/miivar.h>
! 86: #include <dev/mii/miidevs.h>
! 87:
! 88: #include <dev/mii/qsphyreg.h>
! 89:
! 90: int qsphymatch(struct device *, void *, void *);
! 91: void qsphyattach(struct device *, struct device *, void *);
! 92:
! 93: struct cfattach qsphy_ca = {
! 94: sizeof(struct mii_softc), qsphymatch, qsphyattach, mii_phy_detach,
! 95: mii_phy_activate
! 96: };
! 97:
! 98: struct cfdriver qsphy_cd = {
! 99: NULL, "qsphy", DV_DULL
! 100: };
! 101:
! 102: int qsphy_service(struct mii_softc *, struct mii_data *, int);
! 103: void qsphy_reset(struct mii_softc *);
! 104: void qsphy_status(struct mii_softc *);
! 105:
! 106: const struct mii_phy_funcs qsphy_funcs = {
! 107: qsphy_service, qsphy_status, qsphy_reset,
! 108: };
! 109:
! 110: static const struct mii_phydesc qsphys[] = {
! 111: { MII_OUI_QUALSEMI, MII_MODEL_QUALSEMI_QS6612,
! 112: MII_STR_QUALSEMI_QS6612 },
! 113:
! 114: { 0, 0,
! 115: NULL },
! 116: };
! 117:
! 118: int
! 119: qsphymatch(struct device *parent, void *match, void *aux)
! 120: {
! 121: struct mii_attach_args *ma = aux;
! 122:
! 123: if (mii_phy_match(ma, qsphys) != NULL)
! 124: return (10);
! 125:
! 126: return (0);
! 127: }
! 128:
! 129: void
! 130: qsphyattach(struct device *parent, struct device *self, void *aux)
! 131: {
! 132: struct mii_softc *sc = (struct mii_softc *)self;
! 133: struct mii_attach_args *ma = aux;
! 134: struct mii_data *mii = ma->mii_data;
! 135: const struct mii_phydesc *mpd;
! 136:
! 137: mpd = mii_phy_match(ma, qsphys);
! 138: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
! 139:
! 140: sc->mii_inst = mii->mii_instance;
! 141: sc->mii_phy = ma->mii_phyno;
! 142: sc->mii_funcs = &qsphy_funcs;
! 143: sc->mii_pdata = mii;
! 144: sc->mii_flags = ma->mii_flags;
! 145:
! 146: PHY_RESET(sc);
! 147:
! 148: sc->mii_capabilities =
! 149: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
! 150: if (sc->mii_capabilities & BMSR_MEDIAMASK)
! 151: mii_phy_add_media(sc);
! 152: }
! 153:
! 154: int
! 155: qsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
! 156: {
! 157: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 158: int reg;
! 159:
! 160: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
! 161: return (ENXIO);
! 162:
! 163: switch (cmd) {
! 164: case MII_POLLSTAT:
! 165: /*
! 166: * If we're not polling our PHY instance, just return.
! 167: */
! 168: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 169: return (0);
! 170: break;
! 171:
! 172: case MII_MEDIACHG:
! 173: /*
! 174: * If the media indicates a different PHY instance,
! 175: * isolate ourselves.
! 176: */
! 177: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
! 178: reg = PHY_READ(sc, MII_BMCR);
! 179: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
! 180: return (0);
! 181: }
! 182:
! 183: /*
! 184: * If the interface is not up, don't do anything.
! 185: */
! 186: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
! 187: break;
! 188:
! 189: mii_phy_setmedia(sc);
! 190: break;
! 191:
! 192: case MII_TICK:
! 193: /*
! 194: * If we're not currently selected, just return.
! 195: */
! 196: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 197: return (0);
! 198:
! 199: if (mii_phy_tick(sc) == EJUSTRETURN)
! 200: return (0);
! 201: break;
! 202:
! 203: case MII_DOWN:
! 204: mii_phy_down(sc);
! 205: return (0);
! 206: }
! 207:
! 208: /* Update the media status. */
! 209: mii_phy_status(sc);
! 210:
! 211: /* Callback if something changed. */
! 212: mii_phy_update(sc, cmd);
! 213: return (0);
! 214: }
! 215:
! 216: void
! 217: qsphy_status(struct mii_softc *sc)
! 218: {
! 219: struct mii_data *mii = sc->mii_pdata;
! 220: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 221: int bmsr, bmcr, pctl;
! 222:
! 223: mii->mii_media_status = IFM_AVALID;
! 224: mii->mii_media_active = IFM_ETHER;
! 225:
! 226: bmsr = PHY_READ(sc, MII_BMSR) |
! 227: PHY_READ(sc, MII_BMSR);
! 228: if (bmsr & BMSR_LINK)
! 229: mii->mii_media_status |= IFM_ACTIVE;
! 230:
! 231: bmcr = PHY_READ(sc, MII_BMCR);
! 232: if (bmcr & BMCR_ISO) {
! 233: mii->mii_media_active |= IFM_NONE;
! 234: mii->mii_media_status = 0;
! 235: return;
! 236: }
! 237:
! 238: if (bmcr & BMCR_LOOP)
! 239: mii->mii_media_active |= IFM_LOOP;
! 240:
! 241: if (bmcr & BMCR_AUTOEN) {
! 242: if ((bmsr & BMSR_ACOMP) == 0) {
! 243: /* Erg, still trying, I guess... */
! 244: mii->mii_media_active |= IFM_NONE;
! 245: return;
! 246: }
! 247: pctl = PHY_READ(sc, MII_QSPHY_PCTL) |
! 248: PHY_READ(sc, MII_QSPHY_PCTL);
! 249: switch (pctl & PCTL_OPMASK) {
! 250: case PCTL_10_T:
! 251: mii->mii_media_active |= IFM_10_T|IFM_HDX;
! 252: break;
! 253: case PCTL_10_T_FDX:
! 254: mii->mii_media_active |= IFM_10_T|IFM_FDX;
! 255: break;
! 256: case PCTL_100_TX:
! 257: mii->mii_media_active |= IFM_100_TX|IFM_HDX;
! 258: break;
! 259: case PCTL_100_TX_FDX:
! 260: mii->mii_media_active |= IFM_100_TX|IFM_FDX;
! 261: break;
! 262: case PCTL_100_T4:
! 263: mii->mii_media_active |= IFM_100_T4;
! 264: break;
! 265: default:
! 266: /* Erg... this shouldn't happen. */
! 267: mii->mii_media_active |= IFM_NONE;
! 268: break;
! 269: }
! 270: } else
! 271: mii->mii_media_active = ife->ifm_media;
! 272: }
! 273:
! 274: void
! 275: qsphy_reset(struct mii_softc *sc)
! 276: {
! 277: mii_phy_reset(sc);
! 278: PHY_WRITE(sc, MII_QSPHY_IMASK, 0);
! 279: }
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