Annotation of sys/dev/mii/nsphyter.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: nsphyter.c,v 1.13 2006/12/27 19:11:09 kettenis Exp $ */
! 2: /* $NetBSD: nsphyter.c,v 1.5 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 National Semiconductor's DP83843 `PHYTER' ethernet 10/100 PHY
! 72: * Data Sheet available from www.national.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/nsphyterreg.h>
! 90:
! 91: int nsphytermatch(struct device *, void *, void *);
! 92: void nsphyterattach(struct device *, struct device *, void *);
! 93:
! 94: struct cfattach nsphyter_ca = {
! 95: sizeof(struct mii_softc), nsphytermatch, nsphyterattach,
! 96: mii_phy_detach, mii_phy_activate
! 97: };
! 98:
! 99: struct cfdriver nsphyter_cd = {
! 100: NULL, "nsphyter", DV_DULL
! 101: };
! 102:
! 103: int nsphyter_service(struct mii_softc *, struct mii_data *, int);
! 104: void nsphyter_status(struct mii_softc *);
! 105:
! 106: const struct mii_phy_funcs nsphyter_funcs = {
! 107: nsphyter_service, nsphyter_status, mii_phy_reset,
! 108: };
! 109:
! 110: static const struct mii_phydesc nsphyterphys[] = {
! 111: { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83815,
! 112: MII_STR_NATSEMI_DP83815 },
! 113: { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83843,
! 114: MII_STR_NATSEMI_DP83843 },
! 115: { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83847,
! 116: MII_STR_NATSEMI_DP83847 },
! 117:
! 118: { 0, 0,
! 119: NULL },
! 120: };
! 121:
! 122: int
! 123: nsphytermatch(struct device *parent, void *match, void *aux)
! 124: {
! 125: struct mii_attach_args *ma = aux;
! 126:
! 127: if (mii_phy_match(ma, nsphyterphys) != NULL)
! 128: return (10);
! 129:
! 130: return (0);
! 131: }
! 132:
! 133: void
! 134: nsphyterattach(struct device *parent, struct device *self, void *aux)
! 135: {
! 136: struct mii_softc *sc = (struct mii_softc *)self;
! 137: struct mii_attach_args *ma = aux;
! 138: struct mii_data *mii = ma->mii_data;
! 139: const struct mii_phydesc *mpd;
! 140:
! 141: mpd = mii_phy_match(ma, nsphyterphys);
! 142: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
! 143:
! 144: sc->mii_inst = mii->mii_instance;
! 145: sc->mii_phy = ma->mii_phyno;
! 146: sc->mii_funcs = &nsphyter_funcs;
! 147: sc->mii_pdata = mii;
! 148: sc->mii_flags = ma->mii_flags;
! 149:
! 150: PHY_RESET(sc);
! 151:
! 152: sc->mii_capabilities =
! 153: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
! 154: if (sc->mii_capabilities & BMSR_MEDIAMASK)
! 155: mii_phy_add_media(sc);
! 156: }
! 157:
! 158: int
! 159: nsphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
! 160: {
! 161: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 162: int reg;
! 163:
! 164: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
! 165: return (ENXIO);
! 166:
! 167: switch (cmd) {
! 168: case MII_POLLSTAT:
! 169: /*
! 170: * If we're not polling our PHY instance, just return.
! 171: */
! 172: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 173: return (0);
! 174: break;
! 175:
! 176: case MII_MEDIACHG:
! 177: /*
! 178: * If the media indicates a different PHY instance,
! 179: * isolate ourselves.
! 180: */
! 181: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
! 182: reg = PHY_READ(sc, MII_BMCR);
! 183: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
! 184: return (0);
! 185: }
! 186:
! 187: /*
! 188: * If the interface is not up, don't do anything.
! 189: */
! 190: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
! 191: break;
! 192:
! 193: mii_phy_setmedia(sc);
! 194: break;
! 195:
! 196: case MII_TICK:
! 197: /*
! 198: * If we're not currently selected, just return.
! 199: */
! 200: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 201: return (0);
! 202:
! 203: if (mii_phy_tick(sc) == EJUSTRETURN)
! 204: return (0);
! 205: break;
! 206:
! 207: case MII_DOWN:
! 208: mii_phy_down(sc);
! 209: return (0);
! 210: }
! 211:
! 212: /* Update the media status. */
! 213: mii_phy_status(sc);
! 214:
! 215: /* Callback if something changed. */
! 216: mii_phy_update(sc, cmd);
! 217: return (0);
! 218: }
! 219:
! 220: void
! 221: nsphyter_status(struct mii_softc *sc)
! 222: {
! 223: struct mii_data *mii = sc->mii_pdata;
! 224: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 225: int bmsr, bmcr, physts;
! 226:
! 227: mii->mii_media_status = IFM_AVALID;
! 228: mii->mii_media_active = IFM_ETHER;
! 229:
! 230: bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
! 231: physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS);
! 232:
! 233: if (physts & PHYSTS_LINK)
! 234: mii->mii_media_status |= IFM_ACTIVE;
! 235:
! 236: bmcr = PHY_READ(sc, MII_BMCR);
! 237: if (bmcr & BMCR_ISO) {
! 238: mii->mii_media_active |= IFM_NONE;
! 239: mii->mii_media_status = 0;
! 240: return;
! 241: }
! 242:
! 243: if (bmcr & BMCR_LOOP)
! 244: mii->mii_media_active |= IFM_LOOP;
! 245:
! 246: if (bmcr & BMCR_AUTOEN) {
! 247: /*
! 248: * The media status bits are only valid of autonegotiation
! 249: * has completed (or it's disabled).
! 250: */
! 251: if ((bmsr & BMSR_ACOMP) == 0) {
! 252: /* Erg, still trying, I guess... */
! 253: mii->mii_media_active |= IFM_NONE;
! 254: return;
! 255: }
! 256:
! 257: if (physts & PHYSTS_SPEED10)
! 258: mii->mii_media_active |= IFM_10_T;
! 259: else
! 260: mii->mii_media_active |= IFM_100_TX;
! 261:
! 262: if (physts & PHYSTS_DUPLEX)
! 263: mii->mii_media_active |= IFM_FDX;
! 264: else
! 265: mii->mii_media_active |= IFM_HDX;
! 266: } else
! 267: mii->mii_media_active = ife->ifm_media;
! 268: }
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