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 * $FreeBSD: src/sys/dev/mii/pnphy.c,v 1.1.2.1 2002/11/08 21:53:49 semenu Exp $ 33 */ 34 35 /* 36 * Pseudo-driver for media selection on the Lite-On PNIC 82c168 37 * chip. The NWAY support on this chip is horribly broken, so we 38 * only support manual mode selection. This is lame, but getting 39 * NWAY to work right is amazingly difficult. 40 */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/socket.h> 46 #include <sys/errno.h> 47 #include <sys/module.h> 48 #include <sys/bus.h> 49 50 #include <net/if.h> 51 #include <net/if_arp.h> 52 #include <net/if_media.h> 53 #include <net/if_poll.h> 54 55 #include "mii.h" 56 #include "miivar.h" 57 #include "miidevs.h" 58 59 #include <machine/clock.h> 60 61 #include "../dc/if_dcreg.h" 62 63 #include "miibus_if.h" 64 65 #define DC_SETBIT(sc, reg, x) \ 66 CSR_WRITE_4(sc, reg, \ 67 CSR_READ_4(sc, reg) | x) 68 69 #define DC_CLRBIT(sc, reg, x) \ 70 CSR_WRITE_4(sc, reg, \ 71 CSR_READ_4(sc, reg) & ~x) 72 73 static int pnphy_probe (device_t); 74 static int pnphy_attach (device_t); 75 76 static device_method_t pnphy_methods[] = { 77 /* device interface */ 78 DEVMETHOD(device_probe, pnphy_probe), 79 DEVMETHOD(device_attach, pnphy_attach), 80 DEVMETHOD(device_detach, ukphy_detach), 81 DEVMETHOD(device_shutdown, bus_generic_shutdown), 82 DEVMETHOD_END 83 }; 84 85 static devclass_t pnphy_devclass; 86 87 static driver_t pnphy_driver = { 88 "pnphy", 89 pnphy_methods, 90 sizeof(struct mii_softc) 91 }; 92 93 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, NULL, NULL); 94 95 static int pnphy_service(struct mii_softc *, struct mii_data *, int); 96 static void pnphy_status(struct mii_softc *); 97 98 static int 99 pnphy_probe(device_t dev) 100 { 101 struct mii_attach_args *ma; 102 103 ma = device_get_ivars(dev); 104 105 /* 106 * The dc driver will report the 82c168 vendor and device 107 * ID to let us know that it wants us to attach. 108 */ 109 if (ma->mii_id1 != DC_VENDORID_LO || 110 ma->mii_id2 != DC_DEVICEID_82C168) 111 return(ENXIO); 112 113 device_set_desc(dev, "PNIC 82c168 media interface"); 114 115 return (0); 116 } 117 118 static int 119 pnphy_attach(device_t dev) 120 { 121 struct mii_softc *sc; 122 struct mii_attach_args *ma; 123 struct mii_data *mii; 124 125 sc = device_get_softc(dev); 126 ma = device_get_ivars(dev); 127 mii_softc_init(sc, ma); 128 sc->mii_dev = device_get_parent(dev); 129 mii = device_get_softc(sc->mii_dev); 130 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 131 132 sc->mii_inst = mii->mii_instance; 133 sc->mii_service = pnphy_service; 134 sc->mii_pdata = mii; 135 136 sc->mii_flags |= MIIF_NOISOLATE; 137 mii->mii_instance++; 138 139 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 140 141 sc->mii_capabilities = 142 BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX; 143 sc->mii_capabilities &= ma->mii_capmask; 144 device_printf(dev, " "); 145 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 146 kprintf("no media present"); 147 else 148 mii_phy_add_media(sc); 149 kprintf("\n"); 150 151 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 152 MII_MEDIA_NONE); 153 154 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 155 MII_MEDIA_100_TX); 156 157 #undef ADD 158 159 MIIBUS_MEDIAINIT(sc->mii_dev); 160 return(0); 161 } 162 163 static int 164 pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 165 { 166 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 167 168 switch (cmd) { 169 case MII_POLLSTAT: 170 /* 171 * If we're not polling our PHY instance, just return. 172 */ 173 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 174 return (0); 175 } 176 break; 177 178 case MII_MEDIACHG: 179 /* 180 * If the media indicates a different PHY instance, 181 * isolate ourselves. 182 */ 183 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 184 return (0); 185 186 /* 187 * If the interface is not up, don't do anything. 188 */ 189 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 190 break; 191 192 sc->mii_flags = 0; 193 194 switch (IFM_SUBTYPE(ife->ifm_media)) { 195 case IFM_AUTO: 196 /* NWAY is busted on this chip */ 197 case IFM_100_T4: 198 /* 199 * XXX Not supported as a manual setting right now. 200 */ 201 return (EINVAL); 202 case IFM_100_TX: 203 mii->mii_media_active = IFM_ETHER|IFM_100_TX; 204 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 205 mii->mii_media_active |= IFM_FDX; 206 MIIBUS_STATCHG(sc->mii_dev); 207 return(0); 208 break; 209 case IFM_10_T: 210 mii->mii_media_active = IFM_ETHER|IFM_10_T; 211 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 212 mii->mii_media_active |= IFM_FDX; 213 MIIBUS_STATCHG(sc->mii_dev); 214 return(0); 215 break; 216 default: 217 return(EINVAL); 218 break; 219 } 220 break; 221 222 case MII_TICK: 223 /* 224 * If we're not currently selected, just return. 225 */ 226 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 227 return (0); 228 229 /* 230 * Is the interface even up? 231 */ 232 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 233 return (0); 234 235 /* 236 * Only used for autonegotiation. 237 */ 238 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 239 break; 240 241 /* 242 * This PHY's autonegotiation doesn't need to be kicked. 243 */ 244 return(0); 245 } 246 247 /* Update the media status. */ 248 pnphy_status(sc); 249 250 /* Callback if something changed. */ 251 mii_phy_update(sc, cmd); 252 return (0); 253 } 254 255 static void 256 pnphy_status(struct mii_softc *sc) 257 { 258 struct mii_data *mii = sc->mii_pdata; 259 struct dc_softc *dc_sc = mii->mii_ifp->if_softc; 260 int reg; 261 262 mii->mii_media_status = IFM_AVALID; 263 mii->mii_media_active = IFM_ETHER; 264 265 reg = CSR_READ_4(dc_sc, DC_ISR); 266 267 if (!(reg & DC_ISR_LINKFAIL)) 268 mii->mii_media_status |= IFM_ACTIVE; 269 270 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 271 mii->mii_media_active |= IFM_10_T; 272 else 273 mii->mii_media_active |= IFM_100_TX; 274 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 275 mii->mii_media_active |= IFM_FDX; 276 } 277