Annotation of sys/dev/mii/urlphy.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: urlphy.c,v 1.12 2006/12/27 19:11:09 kettenis Exp $ */
! 2: /* $NetBSD: urlphy.c,v 1.1 2002/03/28 21:07:53 ichiro Exp $ */
! 3: /*
! 4: * Copyright (c) 2001, 2002
! 5: * Shingo WATANABE <nabe@nabechan.org>. All rights reserved.
! 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: * 3. Neither the name of the author nor the names of any co-contributors
! 16: * may be used to endorse or promote products derived from this software
! 17: * without specific prior written permission.
! 18: *
! 19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 22: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 29: * SUCH DAMAGE.
! 30: *
! 31: */
! 32:
! 33: /*
! 34: * driver for Realtek RL8150L internal phy
! 35: */
! 36:
! 37: #include <sys/param.h>
! 38: #include <sys/systm.h>
! 39: #include <sys/kernel.h>
! 40: #include <sys/device.h>
! 41: #include <sys/socket.h>
! 42:
! 43: #include <net/if.h>
! 44: #include <net/if_media.h>
! 45:
! 46: #include <dev/mii/mii.h>
! 47: #include <dev/mii/miivar.h>
! 48: #include <dev/mii/miidevs.h>
! 49: #include <dev/mii/urlphyreg.h>
! 50:
! 51: #define URLPHY_DEBUG 0
! 52: #ifdef URLPHY_DEBUG
! 53: #define DPRINTF(x) if (urlphydebug) printf x
! 54: #define DPRINTFN(n,x) if (urlphydebug>(n)) printf x
! 55: int urlphydebug = URLPHY_DEBUG;
! 56: #else
! 57: #define DPRINTF(x)
! 58: #define DPRINTFN(n,x)
! 59: #endif
! 60:
! 61: int urlphy_match(struct device *, void *, void *);
! 62: void urlphy_attach(struct device *, struct device *, void *);
! 63:
! 64: struct cfattach urlphy_ca = {
! 65: sizeof(struct mii_softc), urlphy_match, urlphy_attach, mii_phy_detach,
! 66: mii_phy_activate
! 67: };
! 68:
! 69: struct cfdriver urlphy_cd = {
! 70: NULL, "urlphy", DV_DULL
! 71: };
! 72:
! 73: int urlphy_service(struct mii_softc *, struct mii_data *, int);
! 74: void urlphy_status(struct mii_softc *);
! 75:
! 76: const struct mii_phy_funcs urlphy_funcs = {
! 77: urlphy_service, urlphy_status, mii_phy_reset,
! 78: };
! 79:
! 80: int
! 81: urlphy_match(struct device *parent, void *match, void *aux)
! 82: {
! 83: struct mii_attach_args *ma = aux;
! 84:
! 85: /*
! 86: * RTL8150 reports OUT == 0, MODEL == 0
! 87: */
! 88: if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 &&
! 89: MII_MODEL(ma->mii_id2) != 0)
! 90: return (0);
! 91:
! 92: /*
! 93: * Make sure the parent is an 'url' device.
! 94: */
! 95: if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "url") != 0)
! 96: return (0);
! 97:
! 98: return (10);
! 99: }
! 100:
! 101: void
! 102: urlphy_attach(struct device *parent, struct device *self, void *aux)
! 103: {
! 104: struct mii_softc *sc = (struct mii_softc *)self;
! 105: struct mii_attach_args *ma = aux;
! 106: struct mii_data *mii = ma->mii_data;
! 107:
! 108: printf(": RTL internal phy\n");
! 109:
! 110: DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__));
! 111:
! 112: sc->mii_inst = mii->mii_instance;
! 113: sc->mii_phy = ma->mii_phyno;
! 114: sc->mii_funcs = &urlphy_funcs;
! 115: sc->mii_pdata = mii;
! 116: sc->mii_flags = ma->mii_flags;
! 117: sc->mii_anegticks = MII_ANEGTICKS_GIGE;
! 118:
! 119: /* Don't do loopback on this PHY. */
! 120: sc->mii_flags |= MIIF_NOLOOP;
! 121: /* Don't do isolate on this PHY. */
! 122: sc->mii_flags |= MIIF_NOISOLATE;
! 123:
! 124: if (mii->mii_instance != 0) {
! 125: printf("%s: ignoring this PHY, non-zero instance\n",
! 126: sc->mii_dev.dv_xname);
! 127: return;
! 128: }
! 129: PHY_RESET(sc);
! 130:
! 131: sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
! 132: if (sc->mii_capabilities & BMSR_MEDIAMASK)
! 133: mii_phy_add_media(sc);
! 134: }
! 135:
! 136: int
! 137: urlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
! 138: {
! 139: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 140: int reg;
! 141:
! 142: DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__));
! 143:
! 144: if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
! 145: return (ENXIO);
! 146:
! 147: switch (cmd) {
! 148: case MII_POLLSTAT:
! 149: /*
! 150: * If we're not polling our PHY instance, just return.
! 151: */
! 152: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 153: return (0);
! 154: break;
! 155:
! 156: case MII_MEDIACHG:
! 157: /*
! 158: * If we're not currently selected, just return.
! 159: */
! 160: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 161: return (0);
! 162:
! 163: /* If the interface is not up, don't do anything. */
! 164: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
! 165: break;
! 166:
! 167: mii_phy_setmedia(sc);
! 168: break;
! 169:
! 170: case MII_TICK:
! 171: /*
! 172: * If we're not currently selected, just return.
! 173: */
! 174: if (IFM_INST(ife->ifm_media) != sc->mii_inst)
! 175: return (0);
! 176:
! 177: /* Just bail now if the interface is down. */
! 178: if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
! 179: return (0);
! 180:
! 181: /*
! 182: * If we're not doing autonegotiation, we don't need to do
! 183: * any extra work here. However, we need to check the link
! 184: * status so we can generate an announcement if the status
! 185: * changes.
! 186: */
! 187: if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
! 188: return (0);
! 189:
! 190: /* Read the status register twice; MSR_LINK is latch-low. */
! 191: reg = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR);
! 192: if (reg & URLPHY_MSR_LINK)
! 193: return (0);
! 194:
! 195: /*
! 196: * Only retry autonegotiation every mii_anegticks seconds.
! 197: */
! 198: if (++sc->mii_ticks <= sc->mii_anegticks)
! 199: return (0);
! 200:
! 201: sc->mii_ticks = 0;
! 202: PHY_RESET(sc);
! 203:
! 204: if (mii_phy_auto(sc, 0) == EJUSTRETURN)
! 205: return (0);
! 206:
! 207: break;
! 208:
! 209: case MII_DOWN:
! 210: mii_phy_down(sc);
! 211: return (0);
! 212: }
! 213:
! 214: /* Update the media status. */
! 215: mii_phy_status(sc);
! 216:
! 217: /* Callback if something changed. */
! 218: mii_phy_update(sc, cmd);
! 219:
! 220: return (0);
! 221: }
! 222:
! 223: void
! 224: urlphy_status(struct mii_softc *sc)
! 225: {
! 226: struct mii_data *mii = sc->mii_pdata;
! 227: struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
! 228: int msr, bmsr, bmcr;
! 229:
! 230: DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__));
! 231:
! 232: mii->mii_media_status = IFM_AVALID;
! 233: mii->mii_media_active = IFM_ETHER;
! 234:
! 235: /*
! 236: * The link status bit is not exist in the BMSR register,
! 237: * so we need to read the MSR register to get link status.
! 238: */
! 239: msr = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR);
! 240: if (msr & URLPHY_MSR_LINK)
! 241: mii->mii_media_status |= IFM_ACTIVE;
! 242:
! 243: DPRINTF(("%s: %s: link %s\n", sc->mii_dev.dv_xname, __func__,
! 244: mii->mii_media_status & IFM_ACTIVE ? "up" : "down"));
! 245:
! 246: bmcr = PHY_READ(sc, MII_BMCR);
! 247: if (bmcr & BMCR_AUTOEN) {
! 248: bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
! 249: if ((bmsr & BMSR_ACOMP) == 0) {
! 250: /* Erg, still trying, I guess... */
! 251: mii->mii_media_active |= IFM_NONE;
! 252: return;
! 253: }
! 254:
! 255: if (msr & URLPHY_MSR_SPEED_100)
! 256: mii->mii_media_active |= IFM_100_TX;
! 257: else
! 258: mii->mii_media_active |= IFM_10_T;
! 259:
! 260: if (msr & URLPHY_MSR_DUPLEX)
! 261: mii->mii_media_active |= IFM_FDX;
! 262: else
! 263: mii->mii_media_active |= IFM_HDX;
! 264: } else
! 265: mii->mii_media_active = ife->ifm_media;
! 266: }
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