pnphy.c revision 217417
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: head/sys/dev/dc/pnphy.c 217417 2011-01-14 20:26:59Z marius $"); 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 <dev/dc/if_dcreg.h> 66 67#include "miibus_if.h" 68 69static int pnphy_probe(device_t); 70static int pnphy_attach(device_t); 71 72static device_method_t pnphy_methods[] = { 73 /* device interface */ 74 DEVMETHOD(device_probe, pnphy_probe), 75 DEVMETHOD(device_attach, pnphy_attach), 76 DEVMETHOD(device_detach, mii_phy_detach), 77 DEVMETHOD(device_shutdown, bus_generic_shutdown), 78 { 0, 0 } 79}; 80 81static devclass_t pnphy_devclass; 82 83static driver_t pnphy_driver = { 84 "pnphy", 85 pnphy_methods, 86 sizeof(struct mii_softc) 87}; 88 89DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0); 90 91static int pnphy_service(struct mii_softc *, struct mii_data *, int); 92static void pnphy_status(struct mii_softc *); 93 94static int 95pnphy_probe(device_t dev) 96{ 97 struct mii_attach_args *ma; 98 99 ma = device_get_ivars(dev); 100 101 /* 102 * The dc driver will report the 82c168 vendor and device 103 * ID to let us know that it wants us to attach. 104 */ 105 if (ma->mii_id1 != DC_VENDORID_LO || 106 ma->mii_id2 != DC_DEVICEID_82C168) 107 return (ENXIO); 108 109 device_set_desc(dev, "PNIC 82c168 media interface"); 110 111 return (BUS_PROBE_DEFAULT); 112} 113 114static int 115pnphy_attach(device_t dev) 116{ 117 struct mii_softc *sc; 118 struct mii_attach_args *ma; 119 struct mii_data *mii; 120 121 sc = device_get_softc(dev); 122 ma = device_get_ivars(dev); 123 sc->mii_dev = device_get_parent(dev); 124 mii = ma->mii_data; 125 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 126 127 sc->mii_flags = miibus_get_flags(dev); 128 sc->mii_inst = mii->mii_instance++; 129 sc->mii_phy = ma->mii_phyno; 130 sc->mii_service = pnphy_service; 131 sc->mii_pdata = mii; 132 133 /* 134 * Apparently, we can neither isolate nor do loopback. 135 */ 136 sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP; 137 138 sc->mii_capabilities = 139 BMSR_100TXFDX | BMSR_100TXHDX | BMSR_10TFDX | BMSR_10THDX; 140 sc->mii_capabilities &= ma->mii_capmask; 141 device_printf(dev, " "); 142 mii_phy_add_media(sc); 143 printf("\n"); 144 145 MIIBUS_MEDIAINIT(sc->mii_dev); 146 return (0); 147} 148 149static int 150pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 151{ 152 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 153 154 switch (cmd) { 155 case MII_POLLSTAT: 156 break; 157 158 case MII_MEDIACHG: 159 /* 160 * If the interface is not up, don't do anything. 161 */ 162 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 163 break; 164 165 /* 166 * Note that auto-negotiation is broken on this chip. 167 */ 168 switch (IFM_SUBTYPE(ife->ifm_media)) { 169 case IFM_100_TX: 170 mii->mii_media_active = IFM_ETHER | IFM_100_TX; 171 if ((ife->ifm_media & IFM_FDX) != 0) 172 mii->mii_media_active |= IFM_FDX; 173 MIIBUS_STATCHG(sc->mii_dev); 174 return (0); 175 case IFM_10_T: 176 mii->mii_media_active = IFM_ETHER | IFM_10_T; 177 if ((ife->ifm_media & IFM_FDX) != 0) 178 mii->mii_media_active |= IFM_FDX; 179 MIIBUS_STATCHG(sc->mii_dev); 180 return (0); 181 default: 182 return (EINVAL); 183 } 184 break; 185 186 case MII_TICK: 187 /* 188 * Is the interface even up? 189 */ 190 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 191 return (0); 192 193 break; 194 } 195 196 /* Update the media status. */ 197 pnphy_status(sc); 198 199 /* Callback if something changed. */ 200 mii_phy_update(sc, cmd); 201 return (0); 202} 203 204static void 205pnphy_status(struct mii_softc *sc) 206{ 207 struct mii_data *mii = sc->mii_pdata; 208 int reg; 209 struct dc_softc *dc_sc; 210 211 dc_sc = mii->mii_ifp->if_softc; 212 213 mii->mii_media_status = IFM_AVALID; 214 mii->mii_media_active = IFM_ETHER; 215 216 reg = CSR_READ_4(dc_sc, DC_ISR); 217 if (!(reg & DC_ISR_LINKFAIL)) 218 mii->mii_media_status |= IFM_ACTIVE; 219 reg = CSR_READ_4(dc_sc, DC_NETCFG); 220 if (reg & DC_NETCFG_SPEEDSEL) 221 mii->mii_media_active |= IFM_10_T; 222 else 223 mii->mii_media_active |= IFM_100_TX; 224 if (reg & DC_NETCFG_FULLDUPLEX) 225 mii->mii_media_active |= IFM_FDX; 226 else 227 mii->mii_media_active |= IFM_HDX; 228} 229