1 /* $NetBSD: qsphy.c,v 1.55 2020/03/15 23:04:50 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 /* 58 * driver for Quality Semiconductor's QS6612 ethernet 10/100 PHY 59 * datasheet from www.qualitysemi.com 60 */ 61 62 #include <sys/cdefs.h> 63 __KERNEL_RCSID(0, "$NetBSD: qsphy.c,v 1.55 2020/03/15 23:04:50 thorpej Exp $"); 64 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/kernel.h> 68 #include <sys/device.h> 69 #include <sys/socket.h> 70 71 #include <net/if.h> 72 #include <net/if_media.h> 73 74 #include <dev/mii/mii.h> 75 #include <dev/mii/miivar.h> 76 #include <dev/mii/miidevs.h> 77 78 #include <dev/mii/qsphyreg.h> 79 80 static int qsphymatch(device_t, cfdata_t, void *); 81 static void qsphyattach(device_t, device_t, void *); 82 83 CFATTACH_DECL_NEW(qsphy, sizeof(struct mii_softc), 84 qsphymatch, qsphyattach, mii_phy_detach, mii_phy_activate); 85 86 static int qsphy_service(struct mii_softc *, struct mii_data *, int); 87 static void qsphy_status(struct mii_softc *); 88 static void qsphy_reset(struct mii_softc *); 89 90 static const struct mii_phy_funcs qsphy_funcs = { 91 qsphy_service, qsphy_status, qsphy_reset, 92 }; 93 94 static const struct mii_phydesc qsphys[] = { 95 MII_PHY_DESC(xxQUALSEMI, QS6612), 96 MII_PHY_END, 97 }; 98 99 static int 100 qsphymatch(device_t parent, cfdata_t match, void *aux) 101 { 102 struct mii_attach_args *ma = aux; 103 104 if (mii_phy_match(ma, qsphys) != NULL) 105 return 10; 106 107 return 0; 108 } 109 110 static void 111 qsphyattach(device_t parent, device_t self, void *aux) 112 { 113 struct mii_softc *sc = device_private(self); 114 struct mii_attach_args *ma = aux; 115 struct mii_data *mii = ma->mii_data; 116 const struct mii_phydesc *mpd; 117 118 mpd = mii_phy_match(ma, qsphys); 119 aprint_naive(": Media interface\n"); 120 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 121 122 sc->mii_dev = self; 123 sc->mii_inst = mii->mii_instance; 124 sc->mii_phy = ma->mii_phyno; 125 sc->mii_funcs = &qsphy_funcs; 126 sc->mii_pdata = mii; 127 sc->mii_flags = ma->mii_flags; 128 129 mii_lock(mii); 130 131 PHY_RESET(sc); 132 133 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 134 sc->mii_capabilities &= ma->mii_capmask; 135 136 mii_unlock(mii); 137 138 mii_phy_add_media(sc); 139 } 140 141 static int 142 qsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 143 { 144 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 145 uint16_t reg; 146 147 KASSERT(mii_locked(mii)); 148 149 switch (cmd) { 150 case MII_POLLSTAT: 151 /* If we're not polling our PHY instance, just return. */ 152 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 153 return 0; 154 break; 155 156 case MII_MEDIACHG: 157 /* 158 * If the media indicates a different PHY instance, 159 * isolate ourselves. 160 */ 161 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 162 PHY_READ(sc, MII_BMCR, ®); 163 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 164 return 0; 165 } 166 167 /* If the interface is not up, don't do anything. */ 168 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 169 break; 170 171 mii_phy_setmedia(sc); 172 break; 173 174 case MII_TICK: 175 /* If we're not currently selected, just return. */ 176 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 177 return 0; 178 179 if (mii_phy_tick(sc) == EJUSTRETURN) 180 return 0; 181 break; 182 183 case MII_DOWN: 184 mii_phy_down(sc); 185 return 0; 186 } 187 188 /* Update the media status. */ 189 mii_phy_status(sc); 190 191 /* Callback if something changed. */ 192 mii_phy_update(sc, cmd); 193 return 0; 194 } 195 196 static void 197 qsphy_status(struct mii_softc *sc) 198 { 199 struct mii_data *mii = sc->mii_pdata; 200 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 201 uint16_t bmsr, bmcr, pctl; 202 203 KASSERT(mii_locked(mii)); 204 205 mii->mii_media_status = IFM_AVALID; 206 mii->mii_media_active = IFM_ETHER; 207 208 PHY_READ(sc, MII_BMSR, &bmsr); 209 PHY_READ(sc, MII_BMSR, &bmsr); 210 if (bmsr & BMSR_LINK) 211 mii->mii_media_status |= IFM_ACTIVE; 212 213 PHY_READ(sc, MII_BMCR, &bmcr); 214 if (bmcr & BMCR_ISO) { 215 mii->mii_media_active |= IFM_NONE; 216 mii->mii_media_status = 0; 217 return; 218 } 219 220 if (bmcr & BMCR_LOOP) 221 mii->mii_media_active |= IFM_LOOP; 222 223 if (bmcr & BMCR_AUTOEN) { 224 if ((bmsr & BMSR_ACOMP) == 0) { 225 /* Erg, still trying, I guess... */ 226 mii->mii_media_active |= IFM_NONE; 227 return; 228 } 229 PHY_READ(sc, MII_QSPHY_PCTL, &pctl); 230 PHY_READ(sc, MII_QSPHY_PCTL, &pctl); 231 switch (pctl & PCTL_OPMASK) { 232 case PCTL_10_T: 233 mii->mii_media_active |= IFM_10_T | IFM_HDX; 234 break; 235 case PCTL_10_T_FDX: 236 mii->mii_media_active |= IFM_10_T | IFM_FDX; 237 break; 238 case PCTL_100_TX: 239 mii->mii_media_active |= IFM_100_TX | IFM_HDX; 240 break; 241 case PCTL_100_TX_FDX: 242 mii->mii_media_active |= IFM_100_TX | IFM_FDX; 243 break; 244 case PCTL_100_T4: 245 mii->mii_media_active |= IFM_100_T4 | IFM_HDX; 246 break; 247 default: 248 /* Erg... this shouldn't happen. */ 249 mii->mii_media_active |= IFM_NONE; 250 break; 251 } 252 } else 253 mii->mii_media_active = ife->ifm_media; 254 } 255 256 static void 257 qsphy_reset(struct mii_softc *sc) 258 { 259 260 KASSERT(mii_locked(sc->mii_pdata)); 261 262 mii_phy_reset(sc); 263 PHY_WRITE(sc, MII_QSPHY_IMASK, 0); 264 } 265
Indexes created Sat Sep 20 22:09:52 GMT 2025