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 */ 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/module.h> 48 #include <sys/bus.h> 49 50 #include <net/if.h> 51 #include <net/if_arp.h> 52 #include <net/if_media.h> 53 54 #include "mii.h" 55 #include "miivar.h" 56 #include "miidevs.h" 57 58 #include <machine/clock.h> 59 60 #include "../dc/if_dcreg.h" 61 62 #include "miibus_if.h" 63 64 #define DC_SETBIT(sc, reg, x) \ 65 CSR_WRITE_4(sc, reg, \ 66 CSR_READ_4(sc, reg) | x) 67 68 #define DC_CLRBIT(sc, reg, x) \ 69 CSR_WRITE_4(sc, reg, \ 70 CSR_READ_4(sc, reg) & ~x) 71 72 static int pnphy_probe (device_t); 73 static int pnphy_attach (device_t); 74 75 static device_method_t pnphy_methods[] = { 76 /* device interface */ 77 DEVMETHOD(device_probe, pnphy_probe), 78 DEVMETHOD(device_attach, pnphy_attach), 79 DEVMETHOD(device_detach, ukphy_detach), 80 DEVMETHOD(device_shutdown, bus_generic_shutdown), 81 { 0, 0 } 82 }; 83 84 static devclass_t pnphy_devclass; 85 86 static driver_t pnphy_driver = { 87 "pnphy", 88 pnphy_methods, 89 sizeof(struct mii_softc) 90 }; 91 92 DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, NULL, NULL); 93 94 static int pnphy_service(struct mii_softc *, struct mii_data *, int); 95 static void pnphy_status(struct mii_softc *); 96 97 static int 98 pnphy_probe(device_t dev) 99 { 100 struct mii_attach_args *ma; 101 102 ma = device_get_ivars(dev); 103 104 /* 105 * The dc driver will report the 82c168 vendor and device 106 * ID to let us know that it wants us to attach. 107 */ 108 if (ma->mii_id1 != DC_VENDORID_LO || 109 ma->mii_id2 != DC_DEVICEID_82C168) 110 return(ENXIO); 111 112 device_set_desc(dev, "PNIC 82c168 media interface"); 113 114 return (0); 115 } 116 117 static int 118 pnphy_attach(device_t dev) 119 { 120 struct mii_softc *sc; 121 struct mii_attach_args *ma; 122 struct mii_data *mii; 123 124 sc = device_get_softc(dev); 125 ma = device_get_ivars(dev); 126 mii_softc_init(sc, ma); 127 sc->mii_dev = device_get_parent(dev); 128 mii = device_get_softc(sc->mii_dev); 129 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 130 131 sc->mii_inst = mii->mii_instance; 132 sc->mii_service = pnphy_service; 133 sc->mii_pdata = mii; 134 135 sc->mii_flags |= MIIF_NOISOLATE; 136 mii->mii_instance++; 137 138 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 139 140 sc->mii_capabilities = 141 BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX; 142 sc->mii_capabilities &= ma->mii_capmask; 143 device_printf(dev, " "); 144 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 145 kprintf("no media present"); 146 else 147 mii_phy_add_media(sc); 148 kprintf("\n"); 149 150 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 151 MII_MEDIA_NONE); 152 153 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 154 MII_MEDIA_100_TX); 155 156 #undef ADD 157 158 MIIBUS_MEDIAINIT(sc->mii_dev); 159 return(0); 160 } 161 162 static int 163 pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 164 { 165 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 166 167 switch (cmd) { 168 case MII_POLLSTAT: 169 /* 170 * If we're not polling our PHY instance, just return. 171 */ 172 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 173 return (0); 174 } 175 break; 176 177 case MII_MEDIACHG: 178 /* 179 * If the media indicates a different PHY instance, 180 * isolate ourselves. 181 */ 182 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 183 return (0); 184 185 /* 186 * If the interface is not up, don't do anything. 187 */ 188 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 189 break; 190 191 sc->mii_flags = 0; 192 193 switch (IFM_SUBTYPE(ife->ifm_media)) { 194 case IFM_AUTO: 195 /* NWAY is busted on this chip */ 196 case IFM_100_T4: 197 /* 198 * XXX Not supported as a manual setting right now. 199 */ 200 return (EINVAL); 201 case IFM_100_TX: 202 mii->mii_media_active = IFM_ETHER|IFM_100_TX; 203 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 204 mii->mii_media_active |= IFM_FDX; 205 MIIBUS_STATCHG(sc->mii_dev); 206 return(0); 207 break; 208 case IFM_10_T: 209 mii->mii_media_active = IFM_ETHER|IFM_10_T; 210 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 211 mii->mii_media_active |= IFM_FDX; 212 MIIBUS_STATCHG(sc->mii_dev); 213 return(0); 214 break; 215 default: 216 return(EINVAL); 217 break; 218 } 219 break; 220 221 case MII_TICK: 222 /* 223 * If we're not currently selected, just return. 224 */ 225 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 226 return (0); 227 228 /* 229 * Is the interface even up? 230 */ 231 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 232 return (0); 233 234 /* 235 * Only used for autonegotiation. 236 */ 237 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 238 break; 239 240 /* 241 * This PHY's autonegotiation doesn't need to be kicked. 242 */ 243 return(0); 244 } 245 246 /* Update the media status. */ 247 pnphy_status(sc); 248 249 /* Callback if something changed. */ 250 mii_phy_update(sc, cmd); 251 return (0); 252 } 253 254 static void 255 pnphy_status(struct mii_softc *sc) 256 { 257 struct mii_data *mii = sc->mii_pdata; 258 struct dc_softc *dc_sc = mii->mii_ifp->if_softc; 259 int reg; 260 261 mii->mii_media_status = IFM_AVALID; 262 mii->mii_media_active = IFM_ETHER; 263 264 reg = CSR_READ_4(dc_sc, DC_ISR); 265 266 if (!(reg & DC_ISR_LINKFAIL)) 267 mii->mii_media_status |= IFM_ACTIVE; 268 269 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 270 mii->mii_media_active |= IFM_10_T; 271 else 272 mii->mii_media_active |= IFM_100_TX; 273 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 274 mii->mii_media_active |= IFM_FDX; 275 } 276