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 * $DragonFly: src/sys/dev/netif/mii_layer/pnphy.c,v 1.6 2005/02/21 18:40:36 joerg Exp $ 34 */ 35 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/module.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 "mii.h" 56 #include "miivar.h" 57 #include "miidevs.h" 58 59 #include <machine/clock.h> 60 #include <machine/bus_pio.h> 61 #include <machine/bus_memio.h> 62 #include <machine/bus.h> 63 #include <machine/resource.h> 64 #include <sys/bus.h> 65 66 #include "../dc/if_dcreg.h" 67 68 #include "miibus_if.h" 69 70 #define DC_SETBIT(sc, reg, x) \ 71 CSR_WRITE_4(sc, reg, \ 72 CSR_READ_4(sc, reg) | x) 73 74 #define DC_CLRBIT(sc, reg, x) \ 75 CSR_WRITE_4(sc, reg, \ 76 CSR_READ_4(sc, reg) & ~x) 77 78 static int pnphy_probe (device_t); 79 static int pnphy_attach (device_t); 80 static int pnphy_detach (device_t); 81 82 static device_method_t pnphy_methods[] = { 83 /* device interface */ 84 DEVMETHOD(device_probe, pnphy_probe), 85 DEVMETHOD(device_attach, pnphy_attach), 86 DEVMETHOD(device_detach, pnphy_detach), 87 DEVMETHOD(device_shutdown, bus_generic_shutdown), 88 { 0, 0 } 89 }; 90 91 static devclass_t pnphy_devclass; 92 93 static driver_t pnphy_driver = { 94 "pnphy", 95 pnphy_methods, 96 sizeof(struct mii_softc) 97 }; 98 99 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0); 100 101 int pnphy_service (struct mii_softc *, struct mii_data *, int); 102 void pnphy_status (struct mii_softc *); 103 104 static int pnphy_probe(dev) 105 device_t dev; 106 { 107 struct mii_attach_args *ma; 108 109 ma = device_get_ivars(dev); 110 111 /* 112 * The dc driver will report the 82c168 vendor and device 113 * ID to let us know that it wants us to attach. 114 */ 115 if (ma->mii_id1 != DC_VENDORID_LO || 116 ma->mii_id2 != DC_DEVICEID_82C168) 117 return(ENXIO); 118 119 device_set_desc(dev, "PNIC 82c168 media interface"); 120 121 return (0); 122 } 123 124 static int pnphy_attach(dev) 125 device_t dev; 126 { 127 struct mii_softc *sc; 128 struct mii_attach_args *ma; 129 struct mii_data *mii; 130 131 sc = device_get_softc(dev); 132 ma = device_get_ivars(dev); 133 mii_softc_init(sc); 134 sc->mii_dev = device_get_parent(dev); 135 mii = device_get_softc(sc->mii_dev); 136 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 137 138 sc->mii_inst = mii->mii_instance; 139 sc->mii_phy = ma->mii_phyno; 140 sc->mii_service = pnphy_service; 141 sc->mii_pdata = mii; 142 143 sc->mii_flags |= MIIF_NOISOLATE; 144 mii->mii_instance++; 145 146 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 147 148 sc->mii_capabilities = 149 BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX; 150 sc->mii_capabilities &= ma->mii_capmask; 151 device_printf(dev, " "); 152 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 153 printf("no media present"); 154 else 155 mii_add_media(mii, sc->mii_capabilities, sc->mii_inst); 156 printf("\n"); 157 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 158 BMCR_ISO); 159 160 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 161 BMCR_LOOP|BMCR_S100); 162 163 #undef ADD 164 165 MIIBUS_MEDIAINIT(sc->mii_dev); 166 return(0); 167 } 168 169 static int pnphy_detach(dev) 170 device_t dev; 171 { 172 struct mii_softc *sc; 173 struct mii_data *mii; 174 175 sc = device_get_softc(dev); 176 mii = device_get_softc(device_get_parent(dev)); 177 sc->mii_dev = NULL; 178 LIST_REMOVE(sc, mii_list); 179 180 return(0); 181 } 182 183 int 184 pnphy_service(sc, mii, cmd) 185 struct mii_softc *sc; 186 struct mii_data *mii; 187 int cmd; 188 { 189 struct dc_softc *dc_sc; 190 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 191 192 dc_sc = mii->mii_ifp->if_softc; 193 194 switch (cmd) { 195 case MII_POLLSTAT: 196 /* 197 * If we're not polling our PHY instance, just return. 198 */ 199 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 200 return (0); 201 } 202 break; 203 204 case MII_MEDIACHG: 205 /* 206 * If the media indicates a different PHY instance, 207 * isolate ourselves. 208 */ 209 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 210 return (0); 211 212 /* 213 * If the interface is not up, don't do anything. 214 */ 215 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 216 break; 217 218 sc->mii_flags = 0; 219 220 switch (IFM_SUBTYPE(ife->ifm_media)) { 221 case IFM_AUTO: 222 /* NWAY is busted on this chip */ 223 case IFM_100_T4: 224 /* 225 * XXX Not supported as a manual setting right now. 226 */ 227 return (EINVAL); 228 case IFM_100_TX: 229 mii->mii_media_active = IFM_ETHER|IFM_100_TX; 230 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 231 mii->mii_media_active |= IFM_FDX; 232 MIIBUS_STATCHG(sc->mii_dev); 233 return(0); 234 break; 235 case IFM_10_T: 236 mii->mii_media_active = IFM_ETHER|IFM_10_T; 237 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 238 mii->mii_media_active |= IFM_FDX; 239 MIIBUS_STATCHG(sc->mii_dev); 240 return(0); 241 break; 242 default: 243 return(EINVAL); 244 break; 245 } 246 break; 247 248 case MII_TICK: 249 /* 250 * If we're not currently selected, just return. 251 */ 252 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 253 return (0); 254 255 /* 256 * Only used for autonegotiation. 257 */ 258 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 259 return (0); 260 261 /* 262 * Is the interface even up? 263 */ 264 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 265 return (0); 266 267 return(0); 268 } 269 270 /* Update the media status. */ 271 pnphy_status(sc); 272 273 /* Callback if something changed. */ 274 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 275 MIIBUS_STATCHG(sc->mii_dev); 276 sc->mii_active = mii->mii_media_active; 277 } 278 return (0); 279 } 280 281 void 282 pnphy_status(sc) 283 struct mii_softc *sc; 284 { 285 struct mii_data *mii = sc->mii_pdata; 286 int reg; 287 struct dc_softc *dc_sc; 288 289 dc_sc = mii->mii_ifp->if_softc; 290 291 mii->mii_media_status = IFM_AVALID; 292 mii->mii_media_active = IFM_ETHER; 293 294 reg = CSR_READ_4(dc_sc, DC_ISR); 295 296 if (!(reg & DC_ISR_LINKFAIL)) 297 mii->mii_media_status |= IFM_ACTIVE; 298 299 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 300 mii->mii_media_active |= IFM_10_T; 301 else 302 mii->mii_media_active |= IFM_100_TX; 303 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 304 mii->mii_media_active |= IFM_FDX; 305 306 return; 307 } 308