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 1.10 2006/08/06 10:32:23 sephe 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 81 static device_method_t pnphy_methods[] = { 82 /* device interface */ 83 DEVMETHOD(device_probe, pnphy_probe), 84 DEVMETHOD(device_attach, pnphy_attach), 85 DEVMETHOD(device_detach, ukphy_detach), 86 DEVMETHOD(device_shutdown, bus_generic_shutdown), 87 { 0, 0 } 88 }; 89 90 static devclass_t pnphy_devclass; 91 92 static driver_t pnphy_driver = { 93 "pnphy", 94 pnphy_methods, 95 sizeof(struct mii_softc) 96 }; 97 98 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0); 99 100 static int pnphy_service(struct mii_softc *, struct mii_data *, int); 101 static void pnphy_status(struct mii_softc *); 102 103 static int 104 pnphy_probe(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(device_t dev) 125 { 126 struct mii_softc *sc; 127 struct mii_attach_args *ma; 128 struct mii_data *mii; 129 130 sc = device_get_softc(dev); 131 ma = device_get_ivars(dev); 132 mii_softc_init(sc, ma); 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_service = pnphy_service; 139 sc->mii_pdata = mii; 140 141 sc->mii_flags |= MIIF_NOISOLATE; 142 mii->mii_instance++; 143 144 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 145 146 sc->mii_capabilities = 147 BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX; 148 sc->mii_capabilities &= ma->mii_capmask; 149 device_printf(dev, " "); 150 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 151 printf("no media present"); 152 else 153 mii_phy_add_media(sc); 154 printf("\n"); 155 156 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 157 MII_MEDIA_NONE); 158 159 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 160 MII_MEDIA_100_TX); 161 162 #undef ADD 163 164 MIIBUS_MEDIAINIT(sc->mii_dev); 165 return(0); 166 } 167 168 static int 169 pnphy_service(struct mii_softc *sc, struct mii_data *mii, 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 break; 214 case IFM_10_T: 215 mii->mii_media_active = IFM_ETHER|IFM_10_T; 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 default: 222 return(EINVAL); 223 break; 224 } 225 break; 226 227 case MII_TICK: 228 /* 229 * If we're not currently selected, just return. 230 */ 231 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 232 return (0); 233 234 /* 235 * Is the interface even up? 236 */ 237 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 238 return (0); 239 240 /* 241 * Only used for autonegotiation. 242 */ 243 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 244 break; 245 246 return(0); 247 } 248 249 /* Update the media status. */ 250 pnphy_status(sc); 251 252 /* Callback if something changed. */ 253 mii_phy_update(sc, cmd); 254 return (0); 255 } 256 257 static void 258 pnphy_status(struct mii_softc *sc) 259 { 260 struct mii_data *mii = sc->mii_pdata; 261 struct dc_softc *dc_sc = mii->mii_ifp->if_softc; 262 int reg; 263 264 mii->mii_media_status = IFM_AVALID; 265 mii->mii_media_active = IFM_ETHER; 266 267 reg = CSR_READ_4(dc_sc, DC_ISR); 268 269 if (!(reg & DC_ISR_LINKFAIL)) 270 mii->mii_media_status |= IFM_ACTIVE; 271 272 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 273 mii->mii_media_active |= IFM_10_T; 274 else 275 mii->mii_media_active |= IFM_100_TX; 276 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 277 mii->mii_media_active |= IFM_FDX; 278 } 279