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 1.5 2004/09/18 19:32:59 dillon Exp $ 34 * 35 * $FreeBSD: src/sys/dev/mii/pnphy.c,v 1.1.2.1 2002/11/08 21:53:49 semenu Exp $ 36 */ 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/module.h> 51 #include <sys/bus.h> 52 53 #include <net/if.h> 54 #include <net/if_arp.h> 55 #include <net/if_media.h> 56 57 #include "mii.h" 58 #include "miivar.h" 59 #include "miidevs.h" 60 61 #include <machine/clock.h> 62 #include <machine/bus_pio.h> 63 #include <machine/bus_memio.h> 64 #include <machine/bus.h> 65 #include <machine/resource.h> 66 #include <sys/bus.h> 67 68 #include "../dc/if_dcreg.h" 69 70 #include "miibus_if.h" 71 72 #define DC_SETBIT(sc, reg, x) \ 73 CSR_WRITE_4(sc, reg, \ 74 CSR_READ_4(sc, reg) | x) 75 76 #define DC_CLRBIT(sc, reg, x) \ 77 CSR_WRITE_4(sc, reg, \ 78 CSR_READ_4(sc, reg) & ~x) 79 80 static int pnphy_probe (device_t); 81 static int pnphy_attach (device_t); 82 static int pnphy_detach (device_t); 83 84 static device_method_t pnphy_methods[] = { 85 /* device interface */ 86 DEVMETHOD(device_probe, pnphy_probe), 87 DEVMETHOD(device_attach, pnphy_attach), 88 DEVMETHOD(device_detach, pnphy_detach), 89 DEVMETHOD(device_shutdown, bus_generic_shutdown), 90 { 0, 0 } 91 }; 92 93 static devclass_t pnphy_devclass; 94 95 static driver_t pnphy_driver = { 96 "pnphy", 97 pnphy_methods, 98 sizeof(struct mii_softc) 99 }; 100 101 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0); 102 103 int pnphy_service (struct mii_softc *, struct mii_data *, int); 104 void pnphy_status (struct mii_softc *); 105 106 static int pnphy_probe(dev) 107 device_t dev; 108 { 109 struct mii_attach_args *ma; 110 111 ma = device_get_ivars(dev); 112 113 /* 114 * The dc driver will report the 82c168 vendor and device 115 * ID to let us know that it wants us to attach. 116 */ 117 if (ma->mii_id1 != DC_VENDORID_LO || 118 ma->mii_id2 != DC_DEVICEID_82C168) 119 return(ENXIO); 120 121 device_set_desc(dev, "PNIC 82c168 media interface"); 122 123 return (0); 124 } 125 126 static int pnphy_attach(dev) 127 device_t dev; 128 { 129 struct mii_softc *sc; 130 struct mii_attach_args *ma; 131 struct mii_data *mii; 132 133 sc = device_get_softc(dev); 134 ma = device_get_ivars(dev); 135 mii_softc_init(sc); 136 sc->mii_dev = device_get_parent(dev); 137 mii = device_get_softc(sc->mii_dev); 138 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 139 140 sc->mii_inst = mii->mii_instance; 141 sc->mii_phy = ma->mii_phyno; 142 sc->mii_service = pnphy_service; 143 sc->mii_pdata = mii; 144 145 sc->mii_flags |= MIIF_NOISOLATE; 146 mii->mii_instance++; 147 148 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 149 150 sc->mii_capabilities = 151 BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX; 152 sc->mii_capabilities &= ma->mii_capmask; 153 device_printf(dev, " "); 154 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 155 printf("no media present"); 156 else 157 mii_add_media(mii, sc->mii_capabilities, sc->mii_inst); 158 printf("\n"); 159 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 160 BMCR_ISO); 161 162 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 163 BMCR_LOOP|BMCR_S100); 164 165 #undef ADD 166 167 MIIBUS_MEDIAINIT(sc->mii_dev); 168 return(0); 169 } 170 171 static int pnphy_detach(dev) 172 device_t dev; 173 { 174 struct mii_softc *sc; 175 struct mii_data *mii; 176 177 sc = device_get_softc(dev); 178 mii = device_get_softc(device_get_parent(dev)); 179 sc->mii_dev = NULL; 180 LIST_REMOVE(sc, mii_list); 181 182 return(0); 183 } 184 185 int 186 pnphy_service(sc, mii, cmd) 187 struct mii_softc *sc; 188 struct mii_data *mii; 189 int cmd; 190 { 191 struct dc_softc *dc_sc; 192 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 193 194 dc_sc = mii->mii_ifp->if_softc; 195 196 switch (cmd) { 197 case MII_POLLSTAT: 198 /* 199 * If we're not polling our PHY instance, just return. 200 */ 201 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 202 return (0); 203 } 204 break; 205 206 case MII_MEDIACHG: 207 /* 208 * If the media indicates a different PHY instance, 209 * isolate ourselves. 210 */ 211 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 212 return (0); 213 214 /* 215 * If the interface is not up, don't do anything. 216 */ 217 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 218 break; 219 220 sc->mii_flags = 0; 221 222 switch (IFM_SUBTYPE(ife->ifm_media)) { 223 case IFM_AUTO: 224 /* NWAY is busted on this chip */ 225 case IFM_100_T4: 226 /* 227 * XXX Not supported as a manual setting right now. 228 */ 229 return (EINVAL); 230 case IFM_100_TX: 231 mii->mii_media_active = IFM_ETHER|IFM_100_TX; 232 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 233 mii->mii_media_active |= IFM_FDX; 234 MIIBUS_STATCHG(sc->mii_dev); 235 return(0); 236 break; 237 case IFM_10_T: 238 mii->mii_media_active = IFM_ETHER|IFM_10_T; 239 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 240 mii->mii_media_active |= IFM_FDX; 241 MIIBUS_STATCHG(sc->mii_dev); 242 return(0); 243 break; 244 default: 245 return(EINVAL); 246 break; 247 } 248 break; 249 250 case MII_TICK: 251 /* 252 * If we're not currently selected, just return. 253 */ 254 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 255 return (0); 256 257 /* 258 * Only used for autonegotiation. 259 */ 260 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 261 return (0); 262 263 /* 264 * Is the interface even up? 265 */ 266 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 267 return (0); 268 269 return(0); 270 } 271 272 /* Update the media status. */ 273 pnphy_status(sc); 274 275 /* Callback if something changed. */ 276 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 277 MIIBUS_STATCHG(sc->mii_dev); 278 sc->mii_active = mii->mii_media_active; 279 } 280 return (0); 281 } 282 283 void 284 pnphy_status(sc) 285 struct mii_softc *sc; 286 { 287 struct mii_data *mii = sc->mii_pdata; 288 int reg; 289 struct dc_softc *dc_sc; 290 291 dc_sc = mii->mii_ifp->if_softc; 292 293 mii->mii_media_status = IFM_AVALID; 294 mii->mii_media_active = IFM_ETHER; 295 296 reg = CSR_READ_4(dc_sc, DC_ISR); 297 298 if (!(reg & DC_ISR_LINKFAIL)) 299 mii->mii_media_status |= IFM_ACTIVE; 300 301 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 302 mii->mii_media_active |= IFM_10_T; 303 else 304 mii->mii_media_active |= IFM_100_TX; 305 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 306 mii->mii_media_active |= IFM_FDX; 307 308 return; 309 } 310