pnphy.c revision 190117
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 190117 2009-03-19 22:34:55Z 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 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 77static int pnphy_probe(device_t); 78static int pnphy_attach(device_t); 79 80static 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 89static devclass_t pnphy_devclass; 90 91static driver_t pnphy_driver = { 92 "pnphy", 93 pnphy_methods, 94 sizeof(struct mii_softc) 95}; 96 97DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0); 98 99static int pnphy_service(struct mii_softc *, struct mii_data *, int); 100static void pnphy_status(struct mii_softc *); 101 102static int 103pnphy_probe(device_t dev) 104{ 105 struct mii_attach_args *ma; 106 107 ma = device_get_ivars(dev); 108 109 /* 110 * The dc driver will report the 82c168 vendor and device 111 * ID to let us know that it wants us to attach. 112 */ 113 if (ma->mii_id1 != DC_VENDORID_LO || 114 ma->mii_id2 != DC_DEVICEID_82C168) 115 return (ENXIO); 116 117 device_set_desc(dev, "PNIC 82c168 media interface"); 118 119 return (BUS_PROBE_DEFAULT); 120} 121 122static int 123pnphy_attach(device_t dev) 124{ 125 struct mii_softc *sc; 126 struct mii_attach_args *ma; 127 struct mii_data *mii; 128 129 sc = device_get_softc(dev); 130 ma = device_get_ivars(dev); 131 sc->mii_dev = device_get_parent(dev); 132 mii = device_get_softc(sc->mii_dev); 133 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 134 135 sc->mii_inst = mii->mii_instance; 136 sc->mii_phy = ma->mii_phyno; 137 sc->mii_service = pnphy_service; 138 sc->mii_pdata = mii; 139 140 /* 141 * Apparently, we can neither isolate nor do loopback. 142 */ 143 sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP; 144 145 mii->mii_instance++; 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_phy_add_media(sc); 152 printf("\n"); 153 154 MIIBUS_MEDIAINIT(sc->mii_dev); 155 return (0); 156} 157 158static int 159pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 160{ 161 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 162 163 switch (cmd) { 164 case MII_POLLSTAT: 165 /* 166 * If we're not polling our PHY instance, just return. 167 */ 168 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 169 return (0); 170 break; 171 172 case MII_MEDIACHG: 173 /* 174 * If the media indicates a different PHY instance, 175 * isolate ourselves. 176 */ 177 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 178 return (0); 179 180 /* 181 * If the interface is not up, don't do anything. 182 */ 183 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 184 break; 185 186 sc->mii_flags = 0; 187 188 switch (IFM_SUBTYPE(ife->ifm_media)) { 189 case IFM_AUTO: 190 /* NWAY is busted on this chip */ 191 case IFM_100_T4: 192 /* 193 * XXX Not supported as a manual setting right now. 194 */ 195 return (EINVAL); 196 case IFM_100_TX: 197 mii->mii_media_active = IFM_ETHER | IFM_100_TX; 198 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 199 mii->mii_media_active |= IFM_FDX; 200 MIIBUS_STATCHG(sc->mii_dev); 201 return (0); 202 case IFM_10_T: 203 mii->mii_media_active = IFM_ETHER | IFM_10_T; 204 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 205 mii->mii_media_active |= IFM_FDX; 206 MIIBUS_STATCHG(sc->mii_dev); 207 return (0); 208 default: 209 return (EINVAL); 210 } 211 break; 212 213 case MII_TICK: 214 /* 215 * If we're not currently selected, just return. 216 */ 217 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 218 return (0); 219 220 /* 221 * Is the interface even up? 222 */ 223 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 224 return (0); 225 226 break; 227 } 228 229 /* Update the media status. */ 230 pnphy_status(sc); 231 232 /* Callback if something changed. */ 233 mii_phy_update(sc, cmd); 234 return (0); 235} 236 237static void 238pnphy_status(struct mii_softc *sc) 239{ 240 struct mii_data *mii = sc->mii_pdata; 241 int reg; 242 struct dc_softc *dc_sc; 243 244 dc_sc = mii->mii_ifp->if_softc; 245 246 mii->mii_media_status = IFM_AVALID; 247 mii->mii_media_active = IFM_ETHER; 248 249 reg = CSR_READ_4(dc_sc, DC_ISR); 250 251 if (!(reg & DC_ISR_LINKFAIL)) 252 mii->mii_media_status |= IFM_ACTIVE; 253 254 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 255 mii->mii_media_active |= IFM_10_T; 256 else 257 mii->mii_media_active |= IFM_100_TX; 258 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 259 mii->mii_media_active |= IFM_FDX; 260} 261