pnphy.c revision 213893
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 213893 2010-10-15 14:52:11Z 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 = ma->mii_data; 133 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 134 135 sc->mii_flags = miibus_get_flags(dev); 136 sc->mii_inst = mii->mii_instance++; 137 sc->mii_phy = ma->mii_phyno; 138 sc->mii_service = pnphy_service; 139 sc->mii_pdata = mii; 140 141 /* 142 * Apparently, we can neither isolate nor do loopback. 143 */ 144 sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP; 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 mii_phy_add_media(sc); 151 printf("\n"); 152 153 MIIBUS_MEDIAINIT(sc->mii_dev); 154 return (0); 155} 156 157static int 158pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 159{ 160 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 161 162 switch (cmd) { 163 case MII_POLLSTAT: 164 break; 165 166 case MII_MEDIACHG: 167 /* 168 * If the interface is not up, don't do anything. 169 */ 170 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 171 break; 172 173 switch (IFM_SUBTYPE(ife->ifm_media)) { 174 case IFM_AUTO: 175 /* NWAY is busted on this chip */ 176 case IFM_100_T4: 177 /* 178 * XXX Not supported as a manual setting right now. 179 */ 180 return (EINVAL); 181 case IFM_100_TX: 182 mii->mii_media_active = IFM_ETHER | IFM_100_TX; 183 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 184 mii->mii_media_active |= IFM_FDX; 185 MIIBUS_STATCHG(sc->mii_dev); 186 return (0); 187 case IFM_10_T: 188 mii->mii_media_active = IFM_ETHER | IFM_10_T; 189 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) 190 mii->mii_media_active |= IFM_FDX; 191 MIIBUS_STATCHG(sc->mii_dev); 192 return (0); 193 default: 194 return (EINVAL); 195 } 196 break; 197 198 case MII_TICK: 199 /* 200 * Is the interface even up? 201 */ 202 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 203 return (0); 204 205 break; 206 } 207 208 /* Update the media status. */ 209 pnphy_status(sc); 210 211 /* Callback if something changed. */ 212 mii_phy_update(sc, cmd); 213 return (0); 214} 215 216static void 217pnphy_status(struct mii_softc *sc) 218{ 219 struct mii_data *mii = sc->mii_pdata; 220 int reg; 221 struct dc_softc *dc_sc; 222 223 dc_sc = mii->mii_ifp->if_softc; 224 225 mii->mii_media_status = IFM_AVALID; 226 mii->mii_media_active = IFM_ETHER; 227 228 reg = CSR_READ_4(dc_sc, DC_ISR); 229 230 if (!(reg & DC_ISR_LINKFAIL)) 231 mii->mii_media_status |= IFM_ACTIVE; 232 233 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 234 mii->mii_media_active |= IFM_10_T; 235 else 236 mii->mii_media_active |= IFM_100_TX; 237 if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 238 mii->mii_media_active |= IFM_FDX; 239 else 240 mii->mii_media_active |= IFM_HDX; 241} 242