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/lock.h> 48 #include <sys/module.h> 49 #include <sys/mutex.h> 50 #include <sys/bus.h> 51 52 #include <net/if.h> 53 #include <net/if_arp.h> 54 #include <net/if_media.h> 55 56 #include <dev/mii/mii.h> 57 #include <dev/mii/miivar.h> 58 #include <dev/mii/miidevs.h> 59 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 <pci/if_dcreg.h> 67 68 #include "miibus_if.h" 69 70 #if !defined(lint) 71 static const char rcsid[] = 72 "$FreeBSD$"; 73 #endif 74 75 #define DC_SETBIT(sc, reg, x) \ 76 CSR_WRITE_4(sc, reg, \ 77 CSR_READ_4(sc, reg) | x) 78 79 #define DC_CLRBIT(sc, reg, x) \ 80 CSR_WRITE_4(sc, reg, \ 81 CSR_READ_4(sc, reg) & ~x) 82 83 static int pnphy_probe (device_t); 84 static int pnphy_attach (device_t); 85 static int pnphy_detach (device_t); 86 87 static device_method_t pnphy_methods[] = { 88 /* device interface */ 89 DEVMETHOD(device_probe, pnphy_probe), 90 DEVMETHOD(device_attach, pnphy_attach), 91 DEVMETHOD(device_detach, pnphy_detach), 92 DEVMETHOD(device_shutdown, bus_generic_shutdown), 93 { 0, 0 } 94 }; 95 96 static devclass_t pnphy_devclass; 97 98 static driver_t pnphy_driver = { 99 "pnphy", 100 pnphy_methods, 101 sizeof(struct mii_softc) 102 }; 103 104 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0); 105 106 static int pnphy_service(struct mii_softc *, struct mii_data *, int); 107 static void pnphy_status(struct mii_softc *); 108 109 static int pnphy_probe(dev) 110 device_t dev; 111 { 112 struct mii_attach_args *ma; 113 114 ma = device_get_ivars(dev); 115 116 /* 117 * The dc driver will report the 82c168 vendor and device 118 * ID to let us know that it wants us to attach. 119 */ 120 if (ma->mii_id1 != DC_VENDORID_LO || 121 ma->mii_id2 != DC_DEVICEID_82C168) 122 return(ENXIO); 123 124 device_set_desc(dev, "PNIC 82c168 media interface"); 125 126 return (0); 127 } 128 129 static int pnphy_attach(dev) 130 device_t dev; 131 { 132 struct mii_softc *sc; 133 struct mii_attach_args *ma; 134 struct mii_data *mii; 135 136 sc = device_get_softc(dev); 137 ma = device_get_ivars(dev); 138 sc->mii_dev = device_get_parent(dev); 139 mii = device_get_softc(sc->mii_dev); 140 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 141 142 sc->mii_inst = mii->mii_instance; 143 sc->mii_phy = ma->mii_phyno; 144 sc->mii_service = pnphy_service; 145 sc->mii_pdata = mii; 146 147 sc->mii_flags |= MIIF_NOISOLATE; 148 mii->mii_instance++; 149 150 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 151 152 sc->mii_capabilities = 153 BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX; 154 sc->mii_capabilities &= ma->mii_capmask; 155 device_printf(dev, " "); 156 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 157 printf("no media present"); 158 else 159 mii_add_media(mii, sc->mii_capabilities, sc->mii_inst); 160 printf("\n"); 161 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 162 BMCR_ISO); 163 164 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 165 BMCR_LOOP|BMCR_S100); 166 167 #undef ADD 168 169 MIIBUS_MEDIAINIT(sc->mii_dev); 170 return(0); 171 } 172 173 static int pnphy_detach(dev) 174 device_t dev; 175 { 176 struct mii_softc *sc; 177 struct mii_data *mii; 178 179 sc = device_get_softc(dev); 180 mii = device_get_softc(device_get_parent(dev)); 181 sc->mii_dev = NULL; 182 LIST_REMOVE(sc, mii_list); 183 184 return(0); 185 } 186 187 static int 188 pnphy_service(sc, mii, cmd) 189 struct mii_softc *sc; 190 struct mii_data *mii; 191 int cmd; 192 { 193 struct dc_softc *dc_sc; 194 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 195 196 dc_sc = mii->mii_ifp->if_softc; 197 198 switch (cmd) { 199 case MII_POLLSTAT: 200 /* 201 * If we're not polling our PHY instance, just return. 202 */ 203 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 204 return (0); 205 } 206 break; 207 208 case MII_MEDIACHG: 209 /* 210 * If the media indicates a different PHY instance, 211 * isolate ourselves. 212 */ 213 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 214 return (0); 215 216 /* 217 * If the interface is not up, don't do anything. 218 */ 219 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 220 break; 221 222 sc->mii_flags = 0; 223 224 switch (IFM_SUBTYPE(ife->ifm_media)) { 225 case IFM_AUTO: 226 /* NWAY is busted on this chip */ 227 case IFM_100_T4: 228 /* 229 * XXX Not supported as a manual setting right now. 230 */ 231 return (EINVAL); 232 case IFM_100_TX: 233 mii->mii_media_active = IFM_ETHER|IFM_100_TX; 234 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 235 mii->mii_media_active |= IFM_FDX; 236 MIIBUS_STATCHG(sc->mii_dev); 237 return(0); 238 break; 239 case IFM_10_T: 240 mii->mii_media_active = IFM_ETHER|IFM_10_T; 241 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 242 mii->mii_media_active |= IFM_FDX; 243 MIIBUS_STATCHG(sc->mii_dev); 244 return(0); 245 break; 246 default: 247 return(EINVAL); 248 break; 249 } 250 break; 251 252 case MII_TICK: 253 /* 254 * If we're not currently selected, just return. 255 */ 256 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 257 return (0); 258 259 /* 260 * Is the interface even up? 261 */ 262 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 263 return (0); 264 265 break; 266 } 267 268 /* Update the media status. */ 269 pnphy_status(sc); 270 271 /* Callback if something changed. */ 272 mii_phy_update(sc, cmd); 273 return (0); 274 } 275 276 static void 277 pnphy_status(sc) 278 struct mii_softc *sc; 279 { 280 struct mii_data *mii = sc->mii_pdata; 281 int reg; 282 struct dc_softc *dc_sc; 283 284 dc_sc = mii->mii_ifp->if_softc; 285 286 mii->mii_media_status = IFM_AVALID; 287 mii->mii_media_active = IFM_ETHER; 288 289 reg = CSR_READ_4(dc_sc, DC_ISR); 290 291 if (!(reg & DC_ISR_LINKFAIL)) 292 mii->mii_media_status |= IFM_ACTIVE; 293 294 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 295 mii->mii_media_active |= IFM_10_T; 296 else 297 mii->mii_media_active |= IFM_100_TX; 298 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 299 mii->mii_media_active |= IFM_FDX; 300 301 return; 302 } 303