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 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 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/lock.h> 49 #include <sys/module.h> 50 #include <sys/mutex.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 <dev/mii/mii.h> 58 #include <dev/mii/miivar.h> 59 #include "miidevs.h" 60 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 #define DC_SETBIT(sc, reg, x) \ 70 CSR_WRITE_4(sc, reg, \ 71 CSR_READ_4(sc, reg) | x) 72 73 #define DC_CLRBIT(sc, reg, x) \ 74 CSR_WRITE_4(sc, reg, \ 75 CSR_READ_4(sc, reg) & ~x) 76 77 static int pnphy_probe(device_t); 78 static int pnphy_attach(device_t); 79 80 static device_method_t pnphy_methods[] = { 81 /* device interface */ 82 DEVMETHOD(device_probe, pnphy_probe), 83 DEVMETHOD(device_attach, pnphy_attach), 84 DEVMETHOD(device_detach, mii_phy_detach), 85 DEVMETHOD(device_shutdown, bus_generic_shutdown), 86 { 0, 0 } 87 }; 88 89 static devclass_t pnphy_devclass; 90 91 static driver_t pnphy_driver = { 92 "pnphy", 93 pnphy_methods, 94 sizeof(struct mii_softc) 95 }; 96 97 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0); 98 99 static int pnphy_service(struct mii_softc *, struct mii_data *, int); 100 static void pnphy_status(struct mii_softc *); 101 102 static int 103 pnphy_probe(dev) 104 device_t dev; 105 { 106 struct mii_attach_args *ma; 107 108 ma = device_get_ivars(dev); 109 110 /* 111 * The dc driver will report the 82c168 vendor and device 112 * ID to let us know that it wants us to attach. 113 */ 114 if (ma->mii_id1 != DC_VENDORID_LO || 115 ma->mii_id2 != DC_DEVICEID_82C168) 116 return(ENXIO); 117 118 device_set_desc(dev, "PNIC 82c168 media interface"); 119 120 return (0); 121 } 122 123 static int 124 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 sc->mii_dev = device_get_parent(dev); 134 mii = device_get_softc(sc->mii_dev); 135 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 136 137 sc->mii_inst = mii->mii_instance; 138 sc->mii_phy = ma->mii_phyno; 139 sc->mii_service = pnphy_service; 140 sc->mii_pdata = mii; 141 142 sc->mii_flags |= MIIF_NOISOLATE; 143 mii->mii_instance++; 144 145 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 146 147 sc->mii_capabilities = 148 BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX; 149 sc->mii_capabilities &= ma->mii_capmask; 150 device_printf(dev, " "); 151 mii_add_media(sc); 152 printf("\n"); 153 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 154 BMCR_ISO); 155 156 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 157 BMCR_LOOP|BMCR_S100); 158 159 #undef ADD 160 161 MIIBUS_MEDIAINIT(sc->mii_dev); 162 return(0); 163 } 164 165 static int 166 pnphy_service(sc, mii, cmd) 167 struct mii_softc *sc; 168 struct mii_data *mii; 169 int cmd; 170 { 171 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 172 173 switch (cmd) { 174 case MII_POLLSTAT: 175 /* 176 * If we're not polling our PHY instance, just return. 177 */ 178 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 179 return (0); 180 } 181 break; 182 183 case MII_MEDIACHG: 184 /* 185 * If the media indicates a different PHY instance, 186 * isolate ourselves. 187 */ 188 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 189 return (0); 190 191 /* 192 * If the interface is not up, don't do anything. 193 */ 194 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 195 break; 196 197 sc->mii_flags = 0; 198 199 switch (IFM_SUBTYPE(ife->ifm_media)) { 200 case IFM_AUTO: 201 /* NWAY is busted on this chip */ 202 case IFM_100_T4: 203 /* 204 * XXX Not supported as a manual setting right now. 205 */ 206 return (EINVAL); 207 case IFM_100_TX: 208 mii->mii_media_active = IFM_ETHER|IFM_100_TX; 209 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 210 mii->mii_media_active |= IFM_FDX; 211 MIIBUS_STATCHG(sc->mii_dev); 212 return(0); 213 case IFM_10_T: 214 mii->mii_media_active = IFM_ETHER|IFM_10_T; 215 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 216 mii->mii_media_active |= IFM_FDX; 217 MIIBUS_STATCHG(sc->mii_dev); 218 return(0); 219 default: 220 return(EINVAL); 221 } 222 break; 223 224 case MII_TICK: 225 /* 226 * If we're not currently selected, just return. 227 */ 228 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 229 return (0); 230 231 /* 232 * Is the interface even up? 233 */ 234 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 235 return (0); 236 237 break; 238 } 239 240 /* Update the media status. */ 241 pnphy_status(sc); 242 243 /* Callback if something changed. */ 244 mii_phy_update(sc, cmd); 245 return (0); 246 } 247 248 static void 249 pnphy_status(sc) 250 struct mii_softc *sc; 251 { 252 struct mii_data *mii = sc->mii_pdata; 253 int reg; 254 struct dc_softc *dc_sc; 255 256 dc_sc = mii->mii_ifp->if_softc; 257 258 mii->mii_media_status = IFM_AVALID; 259 mii->mii_media_active = IFM_ETHER; 260 261 reg = CSR_READ_4(dc_sc, DC_ISR); 262 263 if (!(reg & DC_ISR_LINKFAIL)) 264 mii->mii_media_status |= IFM_ACTIVE; 265 266 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 267 mii->mii_media_active |= IFM_10_T; 268 else 269 mii->mii_media_active |= IFM_100_TX; 270 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 271 mii->mii_media_active |= IFM_FDX; 272 273 return; 274 } 275