1 /* 2 * Copyright (c) 1997, 1998, 1999 3 * Bill Paul <wpaul@ee.columbia.edu>. 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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 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 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 /* 37 * Pseudo-driver for media selection on the Lite-On PNIC 82c168 38 * chip. The NWAY support on this chip is horribly broken, so we 39 * only support manual mode selection. This is lame, but getting 40 * NWAY to work right is amazingly difficult. 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/socket.h> 47 #include <sys/errno.h> 48 #include <sys/lock.h> 49 #include <sys/module.h> 50 #include <sys/mutex.h> 51 #include <sys/bus.h> 52 53 #include <net/if.h> 54 #include <net/if_arp.h> 55 #include <net/if_media.h> 56 57 #include <dev/mii/mii.h> 58 #include <dev/mii/miivar.h> 59 #include "miidevs.h" 60 61 #include <machine/bus.h> 62 #include <machine/resource.h> 63 64 #include <dev/dc/if_dcreg.h> 65 66 #include "miibus_if.h" 67 68 static int pnphy_probe(device_t); 69 static int pnphy_attach(device_t); 70 71 static device_method_t pnphy_methods[] = { 72 /* device interface */ 73 DEVMETHOD(device_probe, pnphy_probe), 74 DEVMETHOD(device_attach, pnphy_attach), 75 DEVMETHOD(device_detach, mii_phy_detach), 76 DEVMETHOD(device_shutdown, bus_generic_shutdown), 77 DEVMETHOD_END 78 }; 79 80 static devclass_t pnphy_devclass; 81 82 static driver_t pnphy_driver = { 83 "pnphy", 84 pnphy_methods, 85 sizeof(struct mii_softc) 86 }; 87 88 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0); 89 90 static int pnphy_service(struct mii_softc *, struct mii_data *, int); 91 static void pnphy_status(struct mii_softc *); 92 static void pnphy_reset(struct mii_softc *); 93 94 static const struct mii_phy_funcs pnphy_funcs = { 95 pnphy_service, 96 pnphy_status, 97 pnphy_reset 98 }; 99 100 static int 101 pnphy_probe(device_t dev) 102 { 103 struct mii_attach_args *ma; 104 105 ma = device_get_ivars(dev); 106 107 /* 108 * The dc driver will report the 82c168 vendor and device 109 * ID to let us know that it wants us to attach. 110 */ 111 if (ma->mii_id1 != DC_VENDORID_LO || 112 ma->mii_id2 != DC_DEVICEID_82C168) 113 return (ENXIO); 114 115 device_set_desc(dev, "PNIC 82c168 media interface"); 116 117 return (BUS_PROBE_DEFAULT); 118 } 119 120 static int 121 pnphy_attach(device_t dev) 122 { 123 struct mii_softc *sc; 124 125 sc = device_get_softc(dev); 126 127 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 128 &pnphy_funcs, 0); 129 130 sc->mii_capabilities = 131 BMSR_100TXFDX | BMSR_100TXHDX | BMSR_10TFDX | BMSR_10THDX; 132 sc->mii_capabilities &= sc->mii_capmask; 133 device_printf(dev, " "); 134 mii_phy_add_media(sc); 135 printf("\n"); 136 137 MIIBUS_MEDIAINIT(sc->mii_dev); 138 return (0); 139 } 140 141 static int 142 pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 143 { 144 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 145 146 switch (cmd) { 147 case MII_POLLSTAT: 148 break; 149 150 case MII_MEDIACHG: 151 /* 152 * If the interface is not up, don't do anything. 153 */ 154 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 155 break; 156 157 /* 158 * Note that auto-negotiation is broken on this chip. 159 */ 160 switch (IFM_SUBTYPE(ife->ifm_media)) { 161 case IFM_100_TX: 162 mii->mii_media_active = IFM_ETHER | IFM_100_TX; 163 if ((ife->ifm_media & IFM_FDX) != 0) 164 mii->mii_media_active |= IFM_FDX; 165 MIIBUS_STATCHG(sc->mii_dev); 166 return (0); 167 case IFM_10_T: 168 mii->mii_media_active = IFM_ETHER | IFM_10_T; 169 if ((ife->ifm_media & IFM_FDX) != 0) 170 mii->mii_media_active |= IFM_FDX; 171 MIIBUS_STATCHG(sc->mii_dev); 172 return (0); 173 default: 174 return (EINVAL); 175 } 176 break; 177 178 case MII_TICK: 179 /* 180 * Is the interface even up? 181 */ 182 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 183 return (0); 184 185 break; 186 } 187 188 /* Update the media status. */ 189 PHY_STATUS(sc); 190 191 /* Callback if something changed. */ 192 mii_phy_update(sc, cmd); 193 return (0); 194 } 195 196 static void 197 pnphy_status(struct mii_softc *sc) 198 { 199 struct mii_data *mii = sc->mii_pdata; 200 int reg; 201 struct dc_softc *dc_sc; 202 203 dc_sc = mii->mii_ifp->if_softc; 204 205 mii->mii_media_status = IFM_AVALID; 206 mii->mii_media_active = IFM_ETHER; 207 208 reg = CSR_READ_4(dc_sc, DC_ISR); 209 if (!(reg & DC_ISR_LINKFAIL)) 210 mii->mii_media_status |= IFM_ACTIVE; 211 reg = CSR_READ_4(dc_sc, DC_NETCFG); 212 if (reg & DC_NETCFG_SPEEDSEL) 213 mii->mii_media_active |= IFM_10_T; 214 else 215 mii->mii_media_active |= IFM_100_TX; 216 if (reg & DC_NETCFG_FULLDUPLEX) 217 mii->mii_media_active |= IFM_FDX; 218 else 219 mii->mii_media_active |= IFM_HDX; 220 } 221 222 static void 223 pnphy_reset(struct mii_softc *sc __unused) 224 { 225 226 } 227