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 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, mii_phy_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 static int pnphy_service(struct mii_softc *, struct mii_data *, int); 106 static void pnphy_status(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 mii_add_media(sc); 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 170 pnphy_service(sc, mii, cmd) 171 struct mii_softc *sc; 172 struct mii_data *mii; 173 int cmd; 174 { 175 struct dc_softc *dc_sc; 176 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 177 178 dc_sc = mii->mii_ifp->if_softc; 179 180 switch (cmd) { 181 case MII_POLLSTAT: 182 /* 183 * If we're not polling our PHY instance, just return. 184 */ 185 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 186 return (0); 187 } 188 break; 189 190 case MII_MEDIACHG: 191 /* 192 * If the media indicates a different PHY instance, 193 * isolate ourselves. 194 */ 195 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 196 return (0); 197 198 /* 199 * If the interface is not up, don't do anything. 200 */ 201 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 202 break; 203 204 sc->mii_flags = 0; 205 206 switch (IFM_SUBTYPE(ife->ifm_media)) { 207 case IFM_AUTO: 208 /* NWAY is busted on this chip */ 209 case IFM_100_T4: 210 /* 211 * XXX Not supported as a manual setting right now. 212 */ 213 return (EINVAL); 214 case IFM_100_TX: 215 mii->mii_media_active = IFM_ETHER|IFM_100_TX; 216 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 217 mii->mii_media_active |= IFM_FDX; 218 MIIBUS_STATCHG(sc->mii_dev); 219 return(0); 220 break; 221 case IFM_10_T: 222 mii->mii_media_active = IFM_ETHER|IFM_10_T; 223 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 224 mii->mii_media_active |= IFM_FDX; 225 MIIBUS_STATCHG(sc->mii_dev); 226 return(0); 227 break; 228 default: 229 return(EINVAL); 230 break; 231 } 232 break; 233 234 case MII_TICK: 235 /* 236 * If we're not currently selected, just return. 237 */ 238 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 239 return (0); 240 241 /* 242 * Is the interface even up? 243 */ 244 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 245 return (0); 246 247 break; 248 } 249 250 /* Update the media status. */ 251 pnphy_status(sc); 252 253 /* Callback if something changed. */ 254 mii_phy_update(sc, cmd); 255 return (0); 256 } 257 258 static void 259 pnphy_status(sc) 260 struct mii_softc *sc; 261 { 262 struct mii_data *mii = sc->mii_pdata; 263 int reg; 264 struct dc_softc *dc_sc; 265 266 dc_sc = mii->mii_ifp->if_softc; 267 268 mii->mii_media_status = IFM_AVALID; 269 mii->mii_media_active = IFM_ETHER; 270 271 reg = CSR_READ_4(dc_sc, DC_ISR); 272 273 if (!(reg & DC_ISR_LINKFAIL)) 274 mii->mii_media_status |= IFM_ACTIVE; 275 276 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 277 mii->mii_media_active |= IFM_10_T; 278 else 279 mii->mii_media_active |= IFM_100_TX; 280 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 281 mii->mii_media_active |= IFM_FDX; 282 283 return; 284 } 285