Annotation of sys/dev/mii/bmtphy.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: bmtphy.c,v 1.16 2006/12/27 19:11:08 kettenis Exp $ */
! 2: /* $NetBSD: bmtphy.c,v 1.17 2005/01/17 13:17:45 scw Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 2001 Theo de Raadt
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: *
! 16: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 17: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 18: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 19: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 20: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 21: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 22: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 24: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 25: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 26: * SUCH DAMAGE.
! 27: */
! 28:
! 29: /*
! 30: * Driver for Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also
! 31: * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in
! 32: * the 3c905C data sheet.
! 33: */
! 34:
! 35: #include <sys/param.h>
! 36: #include <sys/systm.h>
! 37: #include <sys/kernel.h>
! 38: #include <sys/device.h>
! 39: #include <sys/socket.h>
! 40: #include <sys/errno.h>
! 41:
! 42: #include <net/if.h>
! 43: #include <net/if_media.h>
! 44:
! 45: #include <dev/mii/mii.h>
! 46: #include <dev/mii/miivar.h>
! 47: #include <dev/mii/miidevs.h>
! 48:
! 49: #include <dev/mii/bmtphyreg.h>
! 50:
! 51: int bmtphymatch(struct device *, void *, void *);
! 52: void bmtphyattach(struct device *, struct device *, void *);
! 53:
! 54: struct cfattach bmtphy_ca = {
! 55: sizeof(struct mii_softc), bmtphymatch, bmtphyattach, mii_phy_detach,
! 56: mii_phy_activate
! 57: };
! 58:
! 59: struct cfdriver bmtphy_cd = {
! 60: NULL, "bmtphy", DV_DULL
! 61: };
! 62:
! 63: int bmtphy_service(struct mii_softc *, struct mii_data *, int);
! 64: void bmtphy_status(struct mii_softc *);
! 65: void bmtphy_reset(struct mii_softc *);
! 66:
! 67: const struct mii_phy_funcs bmtphy_funcs = {
! 68: bmtphy_service, bmtphy_status, bmtphy_reset,
! 69: };
! 70:
! 71: static const struct mii_phydesc bmtphys[] = {
! 72: { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905B,
! 73: MII_STR_BROADCOM_3C905B },
! 74: { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905C,
! 75: MII_STR_BROADCOM_3C905C },
! 76: { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM4401,
! 77: MII_STR_BROADCOM_BCM4401 },
! 78: { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5201,
! 79: MII_STR_BROADCOM_BCM5201 },
! 80: { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5214,
! 81: MII_STR_BROADCOM_BCM5214 },
! 82: { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5220,
! 83: MII_STR_BROADCOM_BCM5220 },
! 84: { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5221,
! 85: MII_STR_BROADCOM_BCM5221 },
! 86: { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5222,
! 87: MII_STR_BROADCOM_BCM5222 },
! 88:
! 89: { 0, 0,
! 90: NULL },
! 91: };
! 92:
! 93: int
! 94: bmtphymatch(struct device *parent, void *match, void *aux)
! 95: {
! 96: struct mii_attach_args *ma = aux;
! 97:
! 98: if (mii_phy_match(ma, bmtphys) != NULL)
! 99: return (10);
! 100:
! 101: return (0);
! 102: }
! 103:
! 104: void
! 105: bmtphyattach(struct device *parent, struct device *self, void *aux)
! 106: {
! 107: struct mii_softc *sc = (struct mii_softc *)self;
! 108: struct mii_attach_args *ma = aux;
! 109: struct mii_data *mii = ma->mii_data;
! 110: const struct mii_phydesc *mpd;
! 111:
! 112: mpd = mii_phy_match(ma, bmtphys);
! 113: printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
! 114:
! 115: sc->mii_model = MII_MODEL(ma->mii_id2);
! 116: sc->mii_inst = mii->mii_instance;
! 117: sc->mii_phy = ma->mii_phyno;
! 118: sc->mii_funcs = &bmtphy_funcs;
! 119: sc->mii_pdata = mii;
! 120: sc->mii_flags = ma->mii_flags;
! 121: sc->mii_anegticks = MII_ANEGTICKS;
! 122:
! 123: PHY_RESET(sc);
! 124:
! 125: /*
! 126: * XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER?
! 127: */
! 128:
! 129: sc->mii_capabilities =
! 130: PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
! 131: if (sc->mii_capabilities & BMSR_MEDIAMASK)
! 132: mii_phy_add_media(sc);
! 133: }
! 134:
! 135: int
! 136: bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
! 137: {
! 138: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 139: int reg;
! 140:
! 141: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
! 142: return (ENXIO);
! 143:
! 144: switch (cmd) {
! 145: case MII_POLLSTAT:
! 146: /*
! 147: * If we're not polling our PHY instance, just return.
! 148: */
! 149: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 150: return (0);
! 151: break;
! 152:
! 153: case MII_MEDIACHG:
! 154: /*
! 155: * If the media indicates a different PHY instance,
! 156: * isolate ourselves.
! 157: */
! 158: if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
! 159: reg = PHY_READ(sc, MII_BMCR);
! 160: PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
! 161: return (0);
! 162: }
! 163:
! 164: /*
! 165: * If the interface is not up, don't do anything.
! 166: */
! 167: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
! 168: break;
! 169:
! 170: mii_phy_setmedia(sc);
! 171: break;
! 172:
! 173: case MII_TICK:
! 174: /*
! 175: * If we're not currently selected, just return.
! 176: */
! 177: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 178: return (0);
! 179:
! 180: if (mii_phy_tick(sc) == EJUSTRETURN)
! 181: return (0);
! 182: break;
! 183:
! 184: case MII_DOWN:
! 185: mii_phy_down(sc);
! 186: return (0);
! 187: }
! 188:
! 189: /* Update the media status. */
! 190: mii_phy_status(sc);
! 191:
! 192: /* Callback if something changed. */
! 193: mii_phy_update(sc, cmd);
! 194: return (0);
! 195: }
! 196:
! 197: void
! 198: bmtphy_status(struct mii_softc *sc)
! 199: {
! 200: struct mii_data *mii = sc->mii_pdata;
! 201: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 202: int bmsr, bmcr, aux_csr;
! 203:
! 204: mii->mii_media_status = IFM_AVALID;
! 205: mii->mii_media_active = IFM_ETHER;
! 206:
! 207: bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
! 208: if (bmsr & BMSR_LINK)
! 209: mii->mii_media_status |= IFM_ACTIVE;
! 210:
! 211: bmcr = PHY_READ(sc, MII_BMCR);
! 212: if (bmcr & BMCR_ISO) {
! 213: mii->mii_media_active |= IFM_NONE;
! 214: mii->mii_media_status = 0;
! 215: return;
! 216: }
! 217:
! 218: if (bmcr & BMCR_LOOP)
! 219: mii->mii_media_active |= IFM_LOOP;
! 220:
! 221: if (bmcr & BMCR_AUTOEN) {
! 222: /*
! 223: * The later are only valid if autonegotiation
! 224: * has completed (or it's disabled).
! 225: */
! 226: if ((bmsr & BMSR_ACOMP) == 0) {
! 227: /* Erg, still trying, I guess... */
! 228: mii->mii_media_active |= IFM_NONE;
! 229: return;
! 230: }
! 231:
! 232: aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR);
! 233: if (aux_csr & AUX_CSR_SPEED)
! 234: mii->mii_media_active |= IFM_100_TX;
! 235: else
! 236: mii->mii_media_active |= IFM_10_T;
! 237:
! 238: if (aux_csr & AUX_CSR_FDX)
! 239: mii->mii_media_active |= IFM_FDX;
! 240: else
! 241: mii->mii_media_active |= IFM_HDX;
! 242: } else
! 243: mii->mii_media_active = ife->ifm_media;
! 244: }
! 245:
! 246: void
! 247: bmtphy_reset(struct mii_softc *sc)
! 248: {
! 249: u_int16_t data;
! 250:
! 251: mii_phy_reset(sc);
! 252:
! 253: if (sc->mii_model == MII_MODEL_BROADCOM_BCM5221) {
! 254: /* Enable shadow register mode */
! 255: data = PHY_READ(sc, 0x1f);
! 256: PHY_WRITE(sc, 0x1f, data | 0x0080);
! 257:
! 258: /* Enable APD (Auto PowerDetect) */
! 259: data = PHY_READ(sc, MII_BMTPHY_AUX2);
! 260: PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020);
! 261:
! 262: /* Enable clocks across APD for
! 263: * Auto-MDIX functionality */
! 264: data = PHY_READ(sc, MII_BMTPHY_INTR);
! 265: PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004);
! 266:
! 267: /* Disable shadow register mode */
! 268: data = PHY_READ(sc, 0x1f);
! 269: PHY_WRITE(sc, 0x1f, data & ~0x0080);
! 270: }
! 271: }
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