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 * $FreeBSD$ 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/mutex.h> 49 #include <sys/bus.h> 50 51 #include <net/if.h> 52 #include <net/if_arp.h> 53 #include <net/if_media.h> 54 55 #include <dev/mii/mii.h> 56 #include <dev/mii/miivar.h> 57 #include <dev/mii/miidevs.h> 58 59 #include <machine/bus_pio.h> 60 #include <machine/bus_memio.h> 61 #include <machine/bus.h> 62 #include <machine/resource.h> 63 #include <sys/bus.h> 64 65 #include <pci/if_dcreg.h> 66 67 #include "miibus_if.h" 68 69 #if !defined(lint) 70 static const char rcsid[] = 71 "$FreeBSD$"; 72 #endif 73 74 #define DC_SETBIT(sc, reg, x) \ 75 CSR_WRITE_4(sc, reg, \ 76 CSR_READ_4(sc, reg) | x) 77 78 #define DC_CLRBIT(sc, reg, x) \ 79 CSR_WRITE_4(sc, reg, \ 80 CSR_READ_4(sc, reg) & ~x) 81 82 static int pnphy_probe __P((device_t)); 83 static int pnphy_attach __P((device_t)); 84 static int pnphy_detach __P((device_t)); 85 86 static device_method_t pnphy_methods[] = { 87 /* device interface */ 88 DEVMETHOD(device_probe, pnphy_probe), 89 DEVMETHOD(device_attach, pnphy_attach), 90 DEVMETHOD(device_detach, pnphy_detach), 91 DEVMETHOD(device_shutdown, bus_generic_shutdown), 92 { 0, 0 } 93 }; 94 95 static devclass_t pnphy_devclass; 96 97 static driver_t pnphy_driver = { 98 "pnphy", 99 pnphy_methods, 100 sizeof(struct mii_softc) 101 }; 102 103 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0); 104 105 int pnphy_service __P((struct mii_softc *, struct mii_data *, int)); 106 void pnphy_status __P((struct mii_softc *)); 107 108 static int pnphy_probe(dev) 109 device_t dev; 110 { 111 struct mii_attach_args *ma; 112 113 ma = device_get_ivars(dev); 114 115 /* 116 * The dc driver will report the 82c168 vendor and device 117 * ID to let us know that it wants us to attach. 118 */ 119 if (ma->mii_id1 != DC_VENDORID_LO || 120 ma->mii_id2 != DC_DEVICEID_82C168) 121 return(ENXIO); 122 123 device_set_desc(dev, "PNIC 82c168 media interface"); 124 125 return (0); 126 } 127 128 static int pnphy_attach(dev) 129 device_t dev; 130 { 131 struct mii_softc *sc; 132 struct mii_attach_args *ma; 133 struct mii_data *mii; 134 135 sc = device_get_softc(dev); 136 ma = device_get_ivars(dev); 137 sc->mii_dev = device_get_parent(dev); 138 mii = device_get_softc(sc->mii_dev); 139 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 140 141 sc->mii_inst = mii->mii_instance; 142 sc->mii_phy = ma->mii_phyno; 143 sc->mii_service = pnphy_service; 144 sc->mii_pdata = mii; 145 146 sc->mii_flags |= MIIF_NOISOLATE; 147 mii->mii_instance++; 148 149 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 150 151 sc->mii_capabilities = 152 BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX; 153 sc->mii_capabilities &= ma->mii_capmask; 154 device_printf(dev, " "); 155 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 156 printf("no media present"); 157 else 158 mii_add_media(mii, sc->mii_capabilities, sc->mii_inst); 159 printf("\n"); 160 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 161 BMCR_ISO); 162 163 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 164 BMCR_LOOP|BMCR_S100); 165 166 #undef ADD 167 168 MIIBUS_MEDIAINIT(sc->mii_dev); 169 return(0); 170 } 171 172 static int pnphy_detach(dev) 173 device_t dev; 174 { 175 struct mii_softc *sc; 176 struct mii_data *mii; 177 178 sc = device_get_softc(dev); 179 mii = device_get_softc(device_get_parent(dev)); 180 sc->mii_dev = NULL; 181 LIST_REMOVE(sc, mii_list); 182 183 return(0); 184 } 185 186 int 187 pnphy_service(sc, mii, cmd) 188 struct mii_softc *sc; 189 struct mii_data *mii; 190 int cmd; 191 { 192 struct dc_softc *dc_sc; 193 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 194 195 dc_sc = mii->mii_ifp->if_softc; 196 197 switch (cmd) { 198 case MII_POLLSTAT: 199 /* 200 * If we're not polling our PHY instance, just return. 201 */ 202 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 203 return (0); 204 } 205 break; 206 207 case MII_MEDIACHG: 208 /* 209 * If the media indicates a different PHY instance, 210 * isolate ourselves. 211 */ 212 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 213 return (0); 214 215 /* 216 * If the interface is not up, don't do anything. 217 */ 218 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 219 break; 220 221 sc->mii_flags = 0; 222 223 switch (IFM_SUBTYPE(ife->ifm_media)) { 224 case IFM_AUTO: 225 /* NWAY is busted on this chip */ 226 case IFM_100_T4: 227 /* 228 * XXX Not supported as a manual setting right now. 229 */ 230 return (EINVAL); 231 case IFM_100_TX: 232 mii->mii_media_active = IFM_ETHER|IFM_100_TX; 233 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 234 mii->mii_media_active |= IFM_FDX; 235 MIIBUS_STATCHG(sc->mii_dev); 236 return(0); 237 break; 238 case IFM_10_T: 239 mii->mii_media_active = IFM_ETHER|IFM_10_T; 240 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 241 mii->mii_media_active |= IFM_FDX; 242 MIIBUS_STATCHG(sc->mii_dev); 243 return(0); 244 break; 245 default: 246 return(EINVAL); 247 break; 248 } 249 break; 250 251 case MII_TICK: 252 /* 253 * If we're not currently selected, just return. 254 */ 255 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 256 return (0); 257 258 /* 259 * Only used for autonegotiation. 260 */ 261 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 262 return (0); 263 264 /* 265 * Is the interface even up? 266 */ 267 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 268 return (0); 269 270 return(0); 271 } 272 273 /* Update the media status. */ 274 pnphy_status(sc); 275 276 /* Callback if something changed. */ 277 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 278 MIIBUS_STATCHG(sc->mii_dev); 279 sc->mii_active = mii->mii_media_active; 280 } 281 return (0); 282 } 283 284 void 285 pnphy_status(sc) 286 struct mii_softc *sc; 287 { 288 struct mii_data *mii = sc->mii_pdata; 289 int reg; 290 struct dc_softc *dc_sc; 291 292 dc_sc = mii->mii_ifp->if_softc; 293 294 mii->mii_media_status = IFM_AVALID; 295 mii->mii_media_active = IFM_ETHER; 296 297 reg = CSR_READ_4(dc_sc, DC_ISR); 298 299 if (!(reg & DC_ISR_LINKFAIL)) 300 mii->mii_media_status |= IFM_ACTIVE; 301 302 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 303 mii->mii_media_active |= IFM_10_T; 304 else 305 mii->mii_media_active |= IFM_100_TX; 306 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 307 mii->mii_media_active |= IFM_FDX; 308 309 return; 310 } 311