1/* $OpenBSD: bmtphy.c,v 1.22 2023/03/04 22:34:37 kettenis Exp $ */ 2/* $NetBSD: bmtphy.c,v 1.17 2005/01/17 13:17:45 scw Exp $ */ 3/* 4 * Copyright (c) 2001 Theo de Raadt 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19/* 20 * Driver for Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also 21 * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in 22 * the 3c905C data sheet. 23 */ 24 25#include <sys/param.h> 26#include <sys/systm.h> 27#include <sys/device.h> 28#include <sys/socket.h> 29#include <sys/errno.h> 30 31#include <net/if.h> 32#include <net/if_var.h> 33#include <net/if_media.h> 34 35#include <dev/mii/mii.h> 36#include <dev/mii/miivar.h> 37#include <dev/mii/miidevs.h> 38 39#include <dev/mii/bmtphyreg.h> 40 41int bmtphymatch(struct device *, void *, void *); 42void bmtphyattach(struct device *, struct device *, void *); 43 44const struct cfattach bmtphy_ca = { 45 sizeof(struct mii_softc), bmtphymatch, bmtphyattach, mii_phy_detach 46}; 47 48struct cfdriver bmtphy_cd = { 49 NULL, "bmtphy", DV_DULL 50}; 51 52int bmtphy_service(struct mii_softc *, struct mii_data *, int); 53void bmtphy_status(struct mii_softc *); 54void bmtphy_reset(struct mii_softc *); 55 56const struct mii_phy_funcs bmtphy_funcs = { 57 bmtphy_service, bmtphy_status, bmtphy_reset, 58}; 59 60static const struct mii_phydesc bmtphys[] = { 61 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905B, 62 MII_STR_BROADCOM_3C905B }, 63 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905C, 64 MII_STR_BROADCOM_3C905C }, 65 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM4401, 66 MII_STR_BROADCOM_BCM4401 }, 67 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5201, 68 MII_STR_BROADCOM_BCM5201 }, 69 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5214, 70 MII_STR_BROADCOM_BCM5214 }, 71 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5220, 72 MII_STR_BROADCOM_BCM5220 }, 73 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5221, 74 MII_STR_BROADCOM_BCM5221 }, 75 { MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5222, 76 MII_STR_BROADCOM_BCM5222 }, 77 78 { 0, 0, 79 NULL }, 80}; 81 82int 83bmtphymatch(struct device *parent, void *match, void *aux) 84{ 85 struct mii_attach_args *ma = aux; 86 87 if (mii_phy_match(ma, bmtphys) != NULL) 88 return (10); 89 90 return (0); 91} 92 93void 94bmtphyattach(struct device *parent, struct device *self, void *aux) 95{ 96 struct mii_softc *sc = (struct mii_softc *)self; 97 struct mii_attach_args *ma = aux; 98 struct mii_data *mii = ma->mii_data; 99 const struct mii_phydesc *mpd; 100 101 mpd = mii_phy_match(ma, bmtphys); 102 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 103 104 sc->mii_model = MII_MODEL(ma->mii_id2); 105 sc->mii_inst = mii->mii_instance; 106 sc->mii_phy = ma->mii_phyno; 107 sc->mii_funcs = &bmtphy_funcs; 108 sc->mii_pdata = mii; 109 sc->mii_flags = ma->mii_flags; 110 sc->mii_anegticks = MII_ANEGTICKS; 111 112 PHY_RESET(sc); 113 114 /* 115 * XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER? 116 */ 117 118 sc->mii_capabilities = 119 PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 120 if (sc->mii_capabilities & BMSR_MEDIAMASK) 121 mii_phy_add_media(sc); 122} 123 124int 125bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 126{ 127 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 128 int reg; 129 130 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 131 return (ENXIO); 132 133 switch (cmd) { 134 case MII_POLLSTAT: 135 /* 136 * If we're not polling our PHY instance, just return. 137 */ 138 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 139 return (0); 140 break; 141 142 case MII_MEDIACHG: 143 /* 144 * If the media indicates a different PHY instance, 145 * isolate ourselves. 146 */ 147 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 148 reg = PHY_READ(sc, MII_BMCR); 149 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 150 return (0); 151 } 152 153 /* 154 * If the interface is not up, don't do anything. 155 */ 156 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 157 break; 158 159 mii_phy_setmedia(sc); 160 break; 161 162 case MII_TICK: 163 /* 164 * If we're not currently selected, just return. 165 */ 166 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 167 return (0); 168 169 if (mii_phy_tick(sc) == EJUSTRETURN) 170 return (0); 171 break; 172 173 case MII_DOWN: 174 mii_phy_down(sc); 175 return (0); 176 } 177 178 /* Update the media status. */ 179 mii_phy_status(sc); 180 181 /* Callback if something changed. */ 182 mii_phy_update(sc, cmd); 183 return (0); 184} 185 186void 187bmtphy_status(struct mii_softc *sc) 188{ 189 struct mii_data *mii = sc->mii_pdata; 190 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 191 int bmsr, bmcr, aux_csr; 192 193 mii->mii_media_status = IFM_AVALID; 194 mii->mii_media_active = IFM_ETHER; 195 196 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 197 if (bmsr & BMSR_LINK) 198 mii->mii_media_status |= IFM_ACTIVE; 199 200 bmcr = PHY_READ(sc, MII_BMCR); 201 if (bmcr & BMCR_ISO) { 202 mii->mii_media_active |= IFM_NONE; 203 mii->mii_media_status = 0; 204 return; 205 } 206 207 if (bmcr & BMCR_LOOP) 208 mii->mii_media_active |= IFM_LOOP; 209 210 if (bmcr & BMCR_AUTOEN) { 211 /* 212 * The later are only valid if autonegotiation 213 * has completed (or it's disabled). 214 */ 215 if ((bmsr & BMSR_ACOMP) == 0) { 216 /* Erg, still trying, I guess... */ 217 mii->mii_media_active |= IFM_NONE; 218 return; 219 } 220 221 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR); 222 if (aux_csr & AUX_CSR_SPEED) 223 mii->mii_media_active |= IFM_100_TX; 224 else 225 mii->mii_media_active |= IFM_10_T; 226 227 if (aux_csr & AUX_CSR_FDX) 228 mii->mii_media_active |= mii_phy_flowstatus(sc) | IFM_FDX; 229 else 230 mii->mii_media_active |= IFM_HDX; 231 } else 232 mii->mii_media_active = ife->ifm_media; 233} 234 235void 236bmtphy_reset(struct mii_softc *sc) 237{ 238 u_int16_t data; 239 240 mii_phy_reset(sc); 241 242 if (sc->mii_model == MII_MODEL_BROADCOM_BCM5221) { 243 /* Enable shadow register mode */ 244 data = PHY_READ(sc, 0x1f); 245 PHY_WRITE(sc, 0x1f, data | 0x0080); 246 247 /* Enable APD (Auto PowerDetect) */ 248 data = PHY_READ(sc, MII_BMTPHY_AUX2); 249 PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020); 250 251 /* Enable clocks across APD for 252 * Auto-MDIX functionality */ 253 data = PHY_READ(sc, MII_BMTPHY_INTR); 254 PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004); 255 256 /* Disable shadow register mode */ 257 data = PHY_READ(sc, 0x1f); 258 PHY_WRITE(sc, 0x1f, data & ~0x0080); 259 } 260} 261