inphy.c revision 95722
1/*- 2 * Copyright (c) 2001 Jonathan Lemon 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: head/sys/dev/mii/inphy.c 95722 2002-04-29 13:07:38Z phk $ 30 */ 31 32/* 33 * driver for Intel 82553 and 82555 PHYs 34 */ 35 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/kernel.h> 39#include <sys/malloc.h> 40#include <sys/socket.h> 41#include <sys/bus.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 50#include <dev/mii/inphyreg.h> 51 52#include "miibus_if.h" 53 54static int inphy_probe(device_t dev); 55static int inphy_attach(device_t dev); 56 57static device_method_t inphy_methods[] = { 58 /* device interface */ 59 DEVMETHOD(device_probe, inphy_probe), 60 DEVMETHOD(device_attach, inphy_attach), 61 DEVMETHOD(device_detach, mii_phy_detach), 62 DEVMETHOD(device_shutdown, bus_generic_shutdown), 63 { 0, 0 } 64}; 65 66static devclass_t inphy_devclass; 67 68static driver_t inphy_driver = { 69 "inphy", 70 inphy_methods, 71 sizeof(struct mii_softc) 72}; 73 74DRIVER_MODULE(inphy, miibus, inphy_driver, inphy_devclass, 0, 0); 75 76static int inphy_service(struct mii_softc *, struct mii_data *, int); 77static void inphy_status(struct mii_softc *); 78 79static int 80inphy_probe(device_t dev) 81{ 82 struct mii_attach_args *ma; 83 device_t parent; 84 85 ma = device_get_ivars(dev); 86 parent = device_get_parent(device_get_parent(dev)); 87 88 /* Intel 82553 A/B steppings */ 89 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxINTEL && 90 MII_MODEL(ma->mii_id2) == MII_MODEL_xxINTEL_I82553AB) { 91 device_set_desc(dev, MII_STR_xxINTEL_I82553AB); 92 return (0); 93 } 94 95 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_INTEL) { 96 switch (MII_MODEL(ma->mii_id2)) { 97 case MII_MODEL_INTEL_I82555: 98 device_set_desc(dev, MII_STR_INTEL_I82555); 99 return (0); 100 case MII_MODEL_INTEL_I82553C: 101 device_set_desc(dev, MII_STR_INTEL_I82553C); 102 return (0); 103 case MII_MODEL_INTEL_I82562EM: 104 device_set_desc(dev, MII_STR_INTEL_I82562EM); 105 return (0); 106 case MII_MODEL_INTEL_I82562ET: 107 device_set_desc(dev, MII_STR_INTEL_I82562ET); 108 return (0); 109 } 110 } 111 112 return (ENXIO); 113} 114 115static int 116inphy_attach(device_t dev) 117{ 118 struct mii_softc *sc; 119 struct mii_attach_args *ma; 120 struct mii_data *mii; 121 122 sc = device_get_softc(dev); 123 ma = device_get_ivars(dev); 124 sc->mii_dev = device_get_parent(dev); 125 mii = device_get_softc(sc->mii_dev); 126 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 127 128 sc->mii_inst = mii->mii_instance; 129 sc->mii_phy = ma->mii_phyno; 130 sc->mii_service = inphy_service; 131 sc->mii_pdata = mii; 132 mii->mii_instance++; 133 134#if 0 135 sc->mii_flags |= MIIF_NOISOLATE; 136#endif 137 138 ifmedia_add(&mii->mii_media, 139 IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 140 BMCR_LOOP|BMCR_S100, NULL); 141 142 mii_phy_reset(sc); 143 144 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 145 device_printf(dev, " "); 146 mii_phy_add_media(sc); 147 printf("\n"); 148 149 MIIBUS_MEDIAINIT(sc->mii_dev); 150 151 return (0); 152} 153 154static int 155inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 156{ 157 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 158 int reg; 159 160 switch (cmd) { 161 case MII_POLLSTAT: 162 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 163 return (0); 164 break; 165 166 case MII_MEDIACHG: 167 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 168 reg = PHY_READ(sc, MII_BMCR); 169 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 170 return (0); 171 } 172 173 /* 174 * If the interface is not up, don't do anything. 175 */ 176 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 177 break; 178 179 mii_phy_setmedia(sc); 180 break; 181 182 case MII_TICK: 183 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 184 return (0); 185 if (mii_phy_tick(sc) == EJUSTRETURN) 186 return (0); 187 break; 188 } 189 190 /* Update the media status. */ 191 inphy_status(sc); 192 193 /* Callback if something changed. */ 194 mii_phy_update(sc, cmd); 195 return (0); 196} 197 198static void 199inphy_status(struct mii_softc *sc) 200{ 201 struct mii_data *mii = sc->mii_pdata; 202 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 203 int bmsr, bmcr, scr; 204 205 mii->mii_media_status = IFM_AVALID; 206 mii->mii_media_active = IFM_ETHER; 207 208 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 209 if (bmsr & BMSR_LINK) 210 mii->mii_media_status |= IFM_ACTIVE; 211 212 bmcr = PHY_READ(sc, MII_BMCR); 213 if (bmcr & BMCR_ISO) { 214 mii->mii_media_active |= IFM_NONE; 215 mii->mii_media_status = 0; 216 return; 217 } 218 219 if (bmcr & BMCR_LOOP) 220 mii->mii_media_active |= IFM_LOOP; 221 222 if (bmcr & BMCR_AUTOEN) { 223 if ((bmsr & BMSR_ACOMP) == 0) { 224 mii->mii_media_active |= IFM_NONE; 225 return; 226 } 227 228 scr = PHY_READ(sc, MII_INPHY_SCR); 229 if (scr & SCR_S100) 230 mii->mii_media_active |= IFM_100_TX; 231 else 232 mii->mii_media_active |= IFM_10_T; 233 if (scr & SCR_FDX) 234 mii->mii_media_active |= IFM_FDX; 235 } else 236 mii->mii_media_active = ife->ifm_media; 237} 238