| 1 | /* $NetBSD: rlphy.c,v 1.30 2016/07/07 06:55:41 msaitoh Exp $ */ |
| 2 | /* $OpenBSD: rlphy.c,v 1.20 2005/07/31 05:27:30 pvalchev Exp $ */ |
| 3 | |
| 4 | /* |
| 5 | * Copyright (c) 1998, 1999 Jason L. Wright (jason@thought.net) |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 19 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 20 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
| 21 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 22 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| 23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 25 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| 26 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 27 | * POSSIBILITY OF SUCH DAMAGE. |
| 28 | */ |
| 29 | |
| 30 | /* |
| 31 | * Driver for the internal PHY found on RTL8139 based nics, based |
| 32 | * on drivers for the 'exphy' (Internal 3Com phys) and 'nsphy' |
| 33 | * (National Semiconductor DP83840). |
| 34 | */ |
| 35 | |
| 36 | /* |
| 37 | * Ported to NetBSD by Juan Romero Pardines <xtraeme@NetBSD.org> |
| 38 | */ |
| 39 | |
| 40 | #include <sys/cdefs.h> |
| 41 | __KERNEL_RCSID(0, "$NetBSD: rlphy.c,v 1.30 2016/07/07 06:55:41 msaitoh Exp $" ); |
| 42 | |
| 43 | #include <sys/param.h> |
| 44 | #include <sys/systm.h> |
| 45 | #include <sys/kernel.h> |
| 46 | #include <sys/device.h> |
| 47 | #include <sys/socket.h> |
| 48 | #include <sys/errno.h> |
| 49 | |
| 50 | #include <net/if.h> |
| 51 | #include <net/if_media.h> |
| 52 | |
| 53 | #include <dev/mii/mii.h> |
| 54 | #include <dev/mii/miivar.h> |
| 55 | #include <dev/mii/miidevs.h> |
| 56 | #include <sys/bus.h> |
| 57 | #include <dev/ic/rtl81x9reg.h> |
| 58 | |
| 59 | struct rlphy_softc { |
| 60 | struct mii_softc sc_mii; |
| 61 | int sc_rtl8201l; |
| 62 | }; |
| 63 | |
| 64 | int rlphymatch(device_t, cfdata_t, void *); |
| 65 | void rlphyattach(device_t, device_t, void *); |
| 66 | |
| 67 | CFATTACH_DECL_NEW(rlphy, sizeof(struct rlphy_softc), |
| 68 | rlphymatch, rlphyattach, mii_phy_detach, mii_phy_activate); |
| 69 | |
| 70 | int rlphy_service(struct mii_softc *, struct mii_data *, int); |
| 71 | void rlphy_status(struct mii_softc *); |
| 72 | |
| 73 | static void rlphy_reset(struct mii_softc *); |
| 74 | |
| 75 | const struct mii_phy_funcs rlphy_funcs = { |
| 76 | rlphy_service, rlphy_status, rlphy_reset, |
| 77 | }; |
| 78 | |
| 79 | static const struct mii_phydesc rlphys[] = { |
| 80 | { MII_OUI_yyREALTEK, MII_MODEL_yyREALTEK_RTL8201L, |
| 81 | MII_STR_yyREALTEK_RTL8201L }, |
| 82 | { MII_OUI_ICPLUS, MII_MODEL_ICPLUS_IP101, |
| 83 | MII_STR_ICPLUS_IP101 }, |
| 84 | |
| 85 | { 0, 0, |
| 86 | NULL }, |
| 87 | }; |
| 88 | |
| 89 | int |
| 90 | rlphymatch(device_t parent, cfdata_t match, void *aux) |
| 91 | { |
| 92 | struct mii_attach_args *ma = aux; |
| 93 | struct mii_data *mii = ma->mii_data; |
| 94 | |
| 95 | if (mii->mii_instance != 0) |
| 96 | return 0; |
| 97 | |
| 98 | if (mii_phy_match(ma, rlphys) != NULL) |
| 99 | return (10); |
| 100 | |
| 101 | if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || |
| 102 | MII_MODEL(ma->mii_id2) != 0) |
| 103 | return 0; |
| 104 | |
| 105 | if (!device_is_a(parent, "rtk" ) && !device_is_a(parent, "re" )) |
| 106 | return 0; |
| 107 | |
| 108 | /* |
| 109 | * A "real" phy should get preference, but on the 8139 there |
| 110 | * is no phyid register. |
| 111 | */ |
| 112 | return 5; |
| 113 | } |
| 114 | |
| 115 | void |
| 116 | rlphyattach(device_t parent, device_t self, void *aux) |
| 117 | { |
| 118 | struct rlphy_softc *rsc = device_private(self); |
| 119 | struct mii_softc *sc = &rsc->sc_mii; |
| 120 | struct mii_attach_args *ma = aux; |
| 121 | struct mii_data *mii = ma->mii_data; |
| 122 | |
| 123 | aprint_naive("\n" ); |
| 124 | if (MII_MODEL(ma->mii_id2) == MII_MODEL_yyREALTEK_RTL8201L) { |
| 125 | rsc->sc_rtl8201l = 1; |
| 126 | aprint_normal(": %s, rev. %d\n" , MII_STR_yyREALTEK_RTL8201L, |
| 127 | MII_REV(ma->mii_id2)); |
| 128 | } else |
| 129 | aprint_normal(": Realtek internal PHY\n" ); |
| 130 | |
| 131 | sc->mii_dev = self; |
| 132 | sc->mii_inst = mii->mii_instance; |
| 133 | sc->mii_phy = ma->mii_phyno; |
| 134 | sc->mii_funcs = &rlphy_funcs; |
| 135 | sc->mii_pdata = mii; |
| 136 | sc->mii_flags = ma->mii_flags; |
| 137 | |
| 138 | sc->mii_flags |= MIIF_NOISOLATE; |
| 139 | |
| 140 | PHY_RESET(sc); |
| 141 | |
| 142 | aprint_normal_dev(self, "" ); |
| 143 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
| 144 | if (sc->mii_capabilities & BMSR_MEDIAMASK) |
| 145 | mii_phy_add_media(sc); |
| 146 | aprint_normal("\n" ); |
| 147 | } |
| 148 | |
| 149 | int |
| 150 | rlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
| 151 | { |
| 152 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
| 153 | |
| 154 | /* |
| 155 | * Can't isolate the RTL8139 phy, so it has to be the only one. |
| 156 | */ |
| 157 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
| 158 | panic("rlphy_service: attempt to isolate phy" ); |
| 159 | |
| 160 | switch (cmd) { |
| 161 | case MII_POLLSTAT: |
| 162 | break; |
| 163 | |
| 164 | case MII_MEDIACHG: |
| 165 | /* |
| 166 | * If the interface is not up, don't do anything. |
| 167 | */ |
| 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 | /* |
| 176 | * Is the interface even up? |
| 177 | */ |
| 178 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
| 179 | return (0); |
| 180 | |
| 181 | /* |
| 182 | * Only used for autonegotiation. |
| 183 | */ |
| 184 | if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) |
| 185 | break; |
| 186 | |
| 187 | /* |
| 188 | * The RealTek PHY's autonegotiation doesn't need to be |
| 189 | * kicked; it continues in the background. |
| 190 | */ |
| 191 | break; |
| 192 | |
| 193 | case MII_DOWN: |
| 194 | mii_phy_down(sc); |
| 195 | return (0); |
| 196 | } |
| 197 | |
| 198 | /* Update the media status. */ |
| 199 | mii_phy_status(sc); |
| 200 | |
| 201 | /* Callback if something changed. */ |
| 202 | mii_phy_update(sc, cmd); |
| 203 | return (0); |
| 204 | } |
| 205 | |
| 206 | void |
| 207 | rlphy_status(struct mii_softc *sc) |
| 208 | { |
| 209 | struct rlphy_softc *rsc = (void *)sc; |
| 210 | struct mii_data *mii = sc->mii_pdata; |
| 211 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
| 212 | int bmsr, bmcr, anlpar; |
| 213 | |
| 214 | mii->mii_media_status = IFM_AVALID; |
| 215 | mii->mii_media_active = IFM_ETHER; |
| 216 | |
| 217 | bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); |
| 218 | if (bmsr & BMSR_LINK) |
| 219 | mii->mii_media_status |= IFM_ACTIVE; |
| 220 | |
| 221 | bmcr = PHY_READ(sc, MII_BMCR); |
| 222 | if (bmcr & BMCR_ISO) { |
| 223 | mii->mii_media_active |= IFM_NONE; |
| 224 | mii->mii_media_status = 0; |
| 225 | return; |
| 226 | } |
| 227 | |
| 228 | if (bmcr & BMCR_LOOP) |
| 229 | mii->mii_media_active |= IFM_LOOP; |
| 230 | |
| 231 | if (bmcr & BMCR_AUTOEN) { |
| 232 | /* |
| 233 | * NWay autonegotiation takes the highest-order common |
| 234 | * bit of the ANAR and ANLPAR (i.e. best media advertised |
| 235 | * both by us and our link partner). |
| 236 | */ |
| 237 | if ((bmsr & BMSR_ACOMP) == 0) { |
| 238 | /* Erg, still trying, I guess... */ |
| 239 | mii->mii_media_active |= IFM_NONE; |
| 240 | return; |
| 241 | } |
| 242 | |
| 243 | if ((anlpar = PHY_READ(sc, MII_ANAR) & |
| 244 | PHY_READ(sc, MII_ANLPAR))) { |
| 245 | if (anlpar & ANLPAR_TX_FD) |
| 246 | mii->mii_media_active |= IFM_100_TX|IFM_FDX; |
| 247 | else if (anlpar & ANLPAR_T4) |
| 248 | mii->mii_media_active |= IFM_100_T4|IFM_HDX; |
| 249 | else if (anlpar & ANLPAR_TX) |
| 250 | mii->mii_media_active |= IFM_100_TX|IFM_HDX; |
| 251 | else if (anlpar & ANLPAR_10_FD) |
| 252 | mii->mii_media_active |= IFM_10_T|IFM_FDX; |
| 253 | else if (anlpar & ANLPAR_10) |
| 254 | mii->mii_media_active |= IFM_10_T|IFM_HDX; |
| 255 | else |
| 256 | mii->mii_media_active |= IFM_NONE; |
| 257 | return; |
| 258 | } |
| 259 | |
| 260 | /* |
| 261 | * If the other side doesn't support NWAY, then the |
| 262 | * best we can do is determine if we have a 10Mbps or |
| 263 | * 100Mbps link. There's no way to know if the link |
| 264 | * is full or half duplex, so we default to half duplex |
| 265 | * and hope that the user is clever enough to manually |
| 266 | * change the media settings if we're wrong. |
| 267 | */ |
| 268 | |
| 269 | /* |
| 270 | * The RealTek PHY supports non-NWAY link speed |
| 271 | * detection, however it does not report the link |
| 272 | * detection results via the ANLPAR or BMSR registers. |
| 273 | * (What? RealTek doesn't do things the way everyone |
| 274 | * else does? I'm just shocked, shocked I tell you.) |
| 275 | * To determine the link speed, we have to do one |
| 276 | * of two things: |
| 277 | * |
| 278 | * - If this is a standalone RealTek RTL8201(L) PHY, |
| 279 | * we can determine the link speed by testing bit 0 |
| 280 | * in the magic, vendor-specific register at offset |
| 281 | * 0x19. |
| 282 | * |
| 283 | * - If this is a RealTek MAC with integrated PHY, we |
| 284 | * can test the 'SPEED10' bit of the MAC's media status |
| 285 | * register. |
| 286 | */ |
| 287 | if (rsc->sc_rtl8201l) { |
| 288 | if (PHY_READ(sc, 0x0019) & 0x01) |
| 289 | mii->mii_media_active |= IFM_100_TX; |
| 290 | else |
| 291 | mii->mii_media_active |= IFM_10_T; |
| 292 | } else { |
| 293 | if (PHY_READ(sc, RTK_MEDIASTAT) & RTK_MEDIASTAT_SPEED10) |
| 294 | mii->mii_media_active |= IFM_10_T; |
| 295 | else |
| 296 | mii->mii_media_active |= IFM_100_TX; |
| 297 | } |
| 298 | mii->mii_media_active |= IFM_HDX; |
| 299 | } else |
| 300 | mii->mii_media_active = ife->ifm_media; |
| 301 | } |
| 302 | |
| 303 | static void |
| 304 | rlphy_reset(struct mii_softc *sc) |
| 305 | { |
| 306 | |
| 307 | mii_phy_reset(sc); |
| 308 | |
| 309 | /* |
| 310 | * XXX RealTek PHY doesn't set the BMCR properly after |
| 311 | * XXX reset, which breaks autonegotiation. |
| 312 | */ |
| 313 | PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN); |
| 314 | } |
| 315 | |