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 __FBSDID("$FreeBSD$"); 37 38 /* 39 * Pseudo-driver for media selection on the Lite-On PNIC 82c168 40 * chip. The NWAY support on this chip is horribly broken, so we 41 * only support manual mode selection. This is lame, but getting 42 * NWAY to work right is amazingly difficult. 43 */ 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/socket.h> 49 #include <sys/errno.h> 50 #include <sys/lock.h> 51 #include <sys/module.h> 52 #include <sys/mutex.h> 53 #include <sys/bus.h> 54 55 #include <net/if.h> 56 #include <net/if_var.h> 57 #include <net/if_arp.h> 58 #include <net/if_media.h> 59 60 #include <dev/mii/mii.h> 61 #include <dev/mii/miivar.h> 62 #include "miidevs.h" 63 64 #include <machine/bus.h> 65 #include <machine/resource.h> 66 67 #include <dev/dc/if_dcreg.h> 68 69 #include "miibus_if.h" 70 71 static int pnphy_probe(device_t); 72 static int pnphy_attach(device_t); 73 74 static device_method_t pnphy_methods[] = { 75 /* device interface */ 76 DEVMETHOD(device_probe, pnphy_probe), 77 DEVMETHOD(device_attach, pnphy_attach), 78 DEVMETHOD(device_detach, mii_phy_detach), 79 DEVMETHOD(device_shutdown, bus_generic_shutdown), 80 DEVMETHOD_END 81 }; 82 83 static driver_t pnphy_driver = { 84 "pnphy", 85 pnphy_methods, 86 sizeof(struct mii_softc) 87 }; 88 89 DRIVER_MODULE(pnphy, miibus, pnphy_driver, 0, 0); 90 91 static int pnphy_service(struct mii_softc *, struct mii_data *, int); 92 static void pnphy_status(struct mii_softc *); 93 static void pnphy_reset(struct mii_softc *); 94 95 static const struct mii_phy_funcs pnphy_funcs = { 96 pnphy_service, 97 pnphy_status, 98 pnphy_reset 99 }; 100 101 static int 102 pnphy_probe(device_t dev) 103 { 104 struct mii_attach_args *ma; 105 106 ma = device_get_ivars(dev); 107 108 /* 109 * The dc driver will report the 82c168 vendor and device 110 * ID to let us know that it wants us to attach. 111 */ 112 if (ma->mii_id1 != DC_VENDORID_LO || 113 ma->mii_id2 != DC_DEVICEID_82C168) 114 return (ENXIO); 115 116 device_set_desc(dev, "PNIC 82c168 media interface"); 117 118 return (BUS_PROBE_DEFAULT); 119 } 120 121 static int 122 pnphy_attach(device_t dev) 123 { 124 struct mii_softc *sc; 125 126 sc = device_get_softc(dev); 127 128 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 129 &pnphy_funcs, 0); 130 131 sc->mii_capabilities = 132 BMSR_100TXFDX | BMSR_100TXHDX | BMSR_10TFDX | BMSR_10THDX; 133 sc->mii_capabilities &= sc->mii_capmask; 134 device_printf(dev, " "); 135 mii_phy_add_media(sc); 136 printf("\n"); 137 138 MIIBUS_MEDIAINIT(sc->mii_dev); 139 return (0); 140 } 141 142 static int 143 pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 144 { 145 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 146 147 switch (cmd) { 148 case MII_POLLSTAT: 149 break; 150 151 case MII_MEDIACHG: 152 /* 153 * If the interface is not up, don't do anything. 154 */ 155 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0) 156 break; 157 158 /* 159 * Note that auto-negotiation is broken on this chip. 160 */ 161 switch (IFM_SUBTYPE(ife->ifm_media)) { 162 case IFM_100_TX: 163 mii->mii_media_active = IFM_ETHER | IFM_100_TX; 164 if ((ife->ifm_media & IFM_FDX) != 0) 165 mii->mii_media_active |= IFM_FDX; 166 MIIBUS_STATCHG(sc->mii_dev); 167 return (0); 168 case IFM_10_T: 169 mii->mii_media_active = IFM_ETHER | IFM_10_T; 170 if ((ife->ifm_media & IFM_FDX) != 0) 171 mii->mii_media_active |= IFM_FDX; 172 MIIBUS_STATCHG(sc->mii_dev); 173 return (0); 174 default: 175 return (EINVAL); 176 } 177 break; 178 179 case MII_TICK: 180 /* 181 * Is the interface even up? 182 */ 183 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0) 184 return (0); 185 186 break; 187 } 188 189 /* Update the media status. */ 190 PHY_STATUS(sc); 191 192 /* Callback if something changed. */ 193 mii_phy_update(sc, cmd); 194 return (0); 195 } 196 197 static void 198 pnphy_status(struct mii_softc *sc) 199 { 200 struct mii_data *mii = sc->mii_pdata; 201 int reg; 202 struct dc_softc *dc_sc; 203 204 dc_sc = if_getsoftc(mii->mii_ifp); 205 206 mii->mii_media_status = IFM_AVALID; 207 mii->mii_media_active = IFM_ETHER; 208 209 reg = CSR_READ_4(dc_sc, DC_ISR); 210 if (!(reg & DC_ISR_LINKFAIL)) 211 mii->mii_media_status |= IFM_ACTIVE; 212 reg = CSR_READ_4(dc_sc, DC_NETCFG); 213 if (reg & DC_NETCFG_SPEEDSEL) 214 mii->mii_media_active |= IFM_10_T; 215 else 216 mii->mii_media_active |= IFM_100_TX; 217 if (reg & DC_NETCFG_FULLDUPLEX) 218 mii->mii_media_active |= IFM_FDX; 219 else 220 mii->mii_media_active |= IFM_HDX; 221 } 222 223 static void 224 pnphy_reset(struct mii_softc *sc __unused) 225 { 226 227 } 228