1 /* 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1997, 1998, 1999 5 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Bill Paul. 18 * 4. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 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_var.h> 55 #include <net/if_arp.h> 56 #include <net/if_media.h> 57 58 #include <dev/mii/mii.h> 59 #include <dev/mii/miivar.h> 60 #include "miidevs.h" 61 62 #include <machine/bus.h> 63 #include <machine/resource.h> 64 65 #include <dev/dc/if_dcreg.h> 66 67 #include "miibus_if.h" 68 69 static int pnphy_probe(device_t); 70 static int pnphy_attach(device_t); 71 72 static device_method_t pnphy_methods[] = { 73 /* device interface */ 74 DEVMETHOD(device_probe, pnphy_probe), 75 DEVMETHOD(device_attach, pnphy_attach), 76 DEVMETHOD(device_detach, mii_phy_detach), 77 DEVMETHOD(device_shutdown, bus_generic_shutdown), 78 DEVMETHOD_END 79 }; 80 81 static driver_t pnphy_driver = { 82 "pnphy", 83 pnphy_methods, 84 sizeof(struct mii_softc) 85 }; 86 87 DRIVER_MODULE(pnphy, miibus, pnphy_driver, 0, 0); 88 89 static int pnphy_service(struct mii_softc *, struct mii_data *, int); 90 static void pnphy_status(struct mii_softc *); 91 static void pnphy_reset(struct mii_softc *); 92 93 static const struct mii_phy_funcs pnphy_funcs = { 94 pnphy_service, 95 pnphy_status, 96 pnphy_reset 97 }; 98 99 static int 100 pnphy_probe(device_t dev) 101 { 102 struct mii_attach_args *ma; 103 104 ma = device_get_ivars(dev); 105 106 /* 107 * The dc driver will report the 82c168 vendor and device 108 * ID to let us know that it wants us to attach. 109 */ 110 if (ma->mii_id1 != DC_VENDORID_LO || 111 ma->mii_id2 != DC_DEVICEID_82C168) 112 return (ENXIO); 113 114 device_set_desc(dev, "PNIC 82c168 media interface"); 115 116 return (BUS_PROBE_DEFAULT); 117 } 118 119 static int 120 pnphy_attach(device_t dev) 121 { 122 struct mii_softc *sc; 123 124 sc = device_get_softc(dev); 125 126 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 127 &pnphy_funcs, 0); 128 129 sc->mii_capabilities = 130 BMSR_100TXFDX | BMSR_100TXHDX | BMSR_10TFDX | BMSR_10THDX; 131 sc->mii_capabilities &= sc->mii_capmask; 132 device_printf(dev, " "); 133 mii_phy_add_media(sc); 134 printf("\n"); 135 136 MIIBUS_MEDIAINIT(sc->mii_dev); 137 return (0); 138 } 139 140 static int 141 pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 142 { 143 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 144 145 switch (cmd) { 146 case MII_POLLSTAT: 147 break; 148 149 case MII_MEDIACHG: 150 /* 151 * If the interface is not up, don't do anything. 152 */ 153 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0) 154 break; 155 156 /* 157 * Note that auto-negotiation is broken on this chip. 158 */ 159 switch (IFM_SUBTYPE(ife->ifm_media)) { 160 case IFM_100_TX: 161 mii->mii_media_active = IFM_ETHER | IFM_100_TX; 162 if ((ife->ifm_media & IFM_FDX) != 0) 163 mii->mii_media_active |= IFM_FDX; 164 MIIBUS_STATCHG(sc->mii_dev); 165 return (0); 166 case IFM_10_T: 167 mii->mii_media_active = IFM_ETHER | IFM_10_T; 168 if ((ife->ifm_media & IFM_FDX) != 0) 169 mii->mii_media_active |= IFM_FDX; 170 MIIBUS_STATCHG(sc->mii_dev); 171 return (0); 172 default: 173 return (EINVAL); 174 } 175 break; 176 177 case MII_TICK: 178 /* 179 * Is the interface even up? 180 */ 181 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0) 182 return (0); 183 184 break; 185 } 186 187 /* Update the media status. */ 188 PHY_STATUS(sc); 189 190 /* Callback if something changed. */ 191 mii_phy_update(sc, cmd); 192 return (0); 193 } 194 195 static void 196 pnphy_status(struct mii_softc *sc) 197 { 198 struct mii_data *mii = sc->mii_pdata; 199 int reg; 200 struct dc_softc *dc_sc; 201 202 dc_sc = if_getsoftc(mii->mii_ifp); 203 204 mii->mii_media_status = IFM_AVALID; 205 mii->mii_media_active = IFM_ETHER; 206 207 reg = CSR_READ_4(dc_sc, DC_ISR); 208 if (!(reg & DC_ISR_LINKFAIL)) 209 mii->mii_media_status |= IFM_ACTIVE; 210 reg = CSR_READ_4(dc_sc, DC_NETCFG); 211 if (reg & DC_NETCFG_SPEEDSEL) 212 mii->mii_media_active |= IFM_10_T; 213 else 214 mii->mii_media_active |= IFM_100_TX; 215 if (reg & DC_NETCFG_FULLDUPLEX) 216 mii->mii_media_active |= IFM_FDX; 217 else 218 mii->mii_media_active |= IFM_HDX; 219 } 220 221 static void 222 pnphy_reset(struct mii_softc *sc __unused) 223 { 224 225 } 226