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 devclass_t pnphy_devclass; 84 85 static driver_t pnphy_driver = { 86 "pnphy", 87 pnphy_methods, 88 sizeof(struct mii_softc) 89 }; 90 91 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0); 92 93 static int pnphy_service(struct mii_softc *, struct mii_data *, int); 94 static void pnphy_status(struct mii_softc *); 95 static void pnphy_reset(struct mii_softc *); 96 97 static const struct mii_phy_funcs pnphy_funcs = { 98 pnphy_service, 99 pnphy_status, 100 pnphy_reset 101 }; 102 103 static int 104 pnphy_probe(device_t dev) 105 { 106 struct mii_attach_args *ma; 107 108 ma = device_get_ivars(dev); 109 110 /* 111 * The dc driver will report the 82c168 vendor and device 112 * ID to let us know that it wants us to attach. 113 */ 114 if (ma->mii_id1 != DC_VENDORID_LO || 115 ma->mii_id2 != DC_DEVICEID_82C168) 116 return (ENXIO); 117 118 device_set_desc(dev, "PNIC 82c168 media interface"); 119 120 return (BUS_PROBE_DEFAULT); 121 } 122 123 static int 124 pnphy_attach(device_t dev) 125 { 126 struct mii_softc *sc; 127 128 sc = device_get_softc(dev); 129 130 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 131 &pnphy_funcs, 0); 132 133 sc->mii_capabilities = 134 BMSR_100TXFDX | BMSR_100TXHDX | BMSR_10TFDX | BMSR_10THDX; 135 sc->mii_capabilities &= sc->mii_capmask; 136 device_printf(dev, " "); 137 mii_phy_add_media(sc); 138 printf("\n"); 139 140 MIIBUS_MEDIAINIT(sc->mii_dev); 141 return (0); 142 } 143 144 static int 145 pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 146 { 147 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 148 149 switch (cmd) { 150 case MII_POLLSTAT: 151 break; 152 153 case MII_MEDIACHG: 154 /* 155 * If the interface is not up, don't do anything. 156 */ 157 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0) 158 break; 159 160 /* 161 * Note that auto-negotiation is broken on this chip. 162 */ 163 switch (IFM_SUBTYPE(ife->ifm_media)) { 164 case IFM_100_TX: 165 mii->mii_media_active = IFM_ETHER | IFM_100_TX; 166 if ((ife->ifm_media & IFM_FDX) != 0) 167 mii->mii_media_active |= IFM_FDX; 168 MIIBUS_STATCHG(sc->mii_dev); 169 return (0); 170 case IFM_10_T: 171 mii->mii_media_active = IFM_ETHER | IFM_10_T; 172 if ((ife->ifm_media & IFM_FDX) != 0) 173 mii->mii_media_active |= IFM_FDX; 174 MIIBUS_STATCHG(sc->mii_dev); 175 return (0); 176 default: 177 return (EINVAL); 178 } 179 break; 180 181 case MII_TICK: 182 /* 183 * Is the interface even up? 184 */ 185 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0) 186 return (0); 187 188 break; 189 } 190 191 /* Update the media status. */ 192 PHY_STATUS(sc); 193 194 /* Callback if something changed. */ 195 mii_phy_update(sc, cmd); 196 return (0); 197 } 198 199 static void 200 pnphy_status(struct mii_softc *sc) 201 { 202 struct mii_data *mii = sc->mii_pdata; 203 int reg; 204 struct dc_softc *dc_sc; 205 206 dc_sc = if_getsoftc(mii->mii_ifp); 207 208 mii->mii_media_status = IFM_AVALID; 209 mii->mii_media_active = IFM_ETHER; 210 211 reg = CSR_READ_4(dc_sc, DC_ISR); 212 if (!(reg & DC_ISR_LINKFAIL)) 213 mii->mii_media_status |= IFM_ACTIVE; 214 reg = CSR_READ_4(dc_sc, DC_NETCFG); 215 if (reg & DC_NETCFG_SPEEDSEL) 216 mii->mii_media_active |= IFM_10_T; 217 else 218 mii->mii_media_active |= IFM_100_TX; 219 if (reg & DC_NETCFG_FULLDUPLEX) 220 mii->mii_media_active |= IFM_FDX; 221 else 222 mii->mii_media_active |= IFM_HDX; 223 } 224 225 static void 226 pnphy_reset(struct mii_softc *sc __unused) 227 { 228 229 } 230