sqphy.c revision 1.54
1 /* $NetBSD: sqphy.c,v 1.54 2019/03/25 09:20:46 msaitoh Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000, 2001 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 Seeq 80220/80221, 80223, and 80225 10/100 ethernet PHYs 59 * datasheet from www.seeq.com 60 */ 61 62 #include <sys/cdefs.h> 63 __KERNEL_RCSID(0, "$NetBSD: sqphy.c,v 1.54 2019/03/25 09:20:46 msaitoh 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 #include <sys/errno.h> 71 72 #include <net/if.h> 73 #include <net/if_media.h> 74 75 #include <dev/mii/mii.h> 76 #include <dev/mii/miivar.h> 77 #include <dev/mii/miidevs.h> 78 79 #include <dev/mii/sqphyreg.h> 80 81 static int sqphymatch(device_t, cfdata_t, void *); 82 static void sqphyattach(device_t, device_t, void *); 83 84 CFATTACH_DECL_NEW(sqphy, sizeof(struct mii_softc), 85 sqphymatch, sqphyattach, mii_phy_detach, mii_phy_activate); 86 87 static int sqphy_service(struct mii_softc *, struct mii_data *, int); 88 static void sqphy_status(struct mii_softc *); 89 static void sqphy_84220_reset(struct mii_softc *); 90 91 static const struct mii_phy_funcs sqphy_funcs = { 92 sqphy_service, sqphy_status, mii_phy_reset, 93 }; 94 95 static const struct mii_phy_funcs sqphy_84220_funcs = { 96 sqphy_service, sqphy_status, sqphy_84220_reset, 97 }; 98 99 static const struct mii_phydesc sqphys[] = { 100 MII_PHY_DESC(SEEQ, 80220), 101 MII_PHY_DESC(SEEQ, 80225), 102 MII_PHY_DESC(SEEQ, 84220), 103 MII_PHY_END, 104 }; 105 106 static int 107 sqphymatch(device_t parent, cfdata_t match, void *aux) 108 { 109 struct mii_attach_args *ma = aux; 110 111 if (mii_phy_match(ma, sqphys) != NULL) 112 return 10; 113 114 return 0; 115 } 116 117 static void 118 sqphyattach(device_t parent, device_t self, void *aux) 119 { 120 struct mii_softc *sc = device_private(self); 121 struct mii_attach_args *ma = aux; 122 struct mii_data *mii = ma->mii_data; 123 const struct mii_phydesc *mpd; 124 125 mpd = mii_phy_match(ma, sqphys); 126 aprint_naive(": Media interface\n"); 127 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 128 129 sc->mii_dev = self; 130 sc->mii_inst = mii->mii_instance; 131 sc->mii_phy = ma->mii_phyno; 132 sc->mii_pdata = mii; 133 sc->mii_flags = ma->mii_flags; 134 sc->mii_anegticks = MII_ANEGTICKS; 135 136 switch (MII_MODEL(ma->mii_id2)) { 137 case MII_MODEL_SEEQ_84220: 138 sc->mii_funcs = &sqphy_84220_funcs; 139 aprint_normal_dev(self, 140 "using Seeq 84220 isolate/reset hack\n"); 141 break; 142 143 default: 144 sc->mii_funcs = &sqphy_funcs; 145 } 146 147 PHY_RESET(sc); 148 149 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities); 150 sc->mii_capabilities &= ma->mii_capmask; 151 aprint_normal_dev(self, ""); 152 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 153 aprint_error("no media present"); 154 else 155 mii_phy_add_media(sc); 156 aprint_normal("\n"); 157 } 158 159 static int 160 sqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 161 { 162 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 163 uint16_t reg; 164 165 switch (cmd) { 166 case MII_POLLSTAT: 167 /* If we're not polling our PHY instance, just return. */ 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 PHY_READ(sc, MII_BMCR, ®); 179 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 180 return 0; 181 } 182 183 /* If the interface is not up, don't do anything. */ 184 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 185 break; 186 187 mii_phy_setmedia(sc); 188 break; 189 190 case MII_TICK: 191 /* If we're not currently selected, just return. */ 192 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 193 return 0; 194 195 if (mii_phy_tick(sc) == EJUSTRETURN) 196 return 0; 197 break; 198 199 case MII_DOWN: 200 mii_phy_down(sc); 201 return 0; 202 } 203 204 /* Update the media status. */ 205 mii_phy_status(sc); 206 207 /* Callback if something changed. */ 208 mii_phy_update(sc, cmd); 209 return 0; 210 } 211 212 static void 213 sqphy_status(struct mii_softc *sc) 214 { 215 struct mii_data *mii = sc->mii_pdata; 216 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 217 uint16_t bmsr, bmcr, status; 218 219 mii->mii_media_status = IFM_AVALID; 220 mii->mii_media_active = IFM_ETHER; 221 222 PHY_READ(sc, MII_BMSR, &bmsr); 223 PHY_READ(sc, MII_BMSR, &bmsr); 224 if (bmsr & BMSR_LINK) 225 mii->mii_media_status |= IFM_ACTIVE; 226 227 PHY_READ(sc, MII_BMCR, &bmcr); 228 if (bmcr & BMCR_ISO) { 229 mii->mii_media_active |= IFM_NONE; 230 mii->mii_media_status = 0; 231 return; 232 } 233 234 if (bmcr & BMCR_LOOP) 235 mii->mii_media_active |= IFM_LOOP; 236 237 if (bmcr & BMCR_AUTOEN) { 238 if ((bmsr & BMSR_ACOMP) == 0) { 239 /* Erg, still trying, I guess... */ 240 mii->mii_media_active |= IFM_NONE; 241 return; 242 } 243 /* 244 * Note: don't get fancy here -- the 80225 only supports the 245 * SPD_DET and DPLX_DET bits in the STATUS register. 246 */ 247 PHY_READ(sc, MII_SQPHY_STATUS, &status); 248 if (status & STATUS_SPD_DET) 249 mii->mii_media_active |= IFM_100_TX; 250 else 251 mii->mii_media_active |= IFM_10_T; 252 if (status & STATUS_DPLX_DET) 253 mii->mii_media_active |= IFM_FDX; 254 else 255 mii->mii_media_active |= IFM_HDX; 256 } else 257 mii->mii_media_active = ife->ifm_media; 258 } 259 260 static void 261 sqphy_84220_reset(struct mii_softc *sc) 262 { 263 uint16_t reg; 264 265 mii_phy_reset(sc); 266 267 /* 268 * This PHY sometimes insists on coming out of reset isolated, 269 * even when the MDA[0-3] pins are pulled high (to indicate 270 * PHY address 0), contrary to the device's datasheet. 271 * 272 * Morever, simply clearing BMCR_ISO here isn't enough; the 273 * change won't stick until about 30mS *after* the PHY has 274 * been reset. 275 * 276 * This sucks. 277 */ 278 if ((sc->mii_inst != 0) && ((sc->mii_flags & MIIF_NOISOLATE) == 0)) 279 return; 280 281 PHY_READ(sc, MII_BMCR, ®); 282 while ((reg & BMCR_ISO) != 0) { 283 delay(35000); 284 PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO); 285 delay(35000); 286 PHY_READ(sc, MII_BMCR, ®); 287 } 288 } 289
Indexes created Fri Sep 26 20:09:58 GMT 2025