1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2000 Berkeley Software Design, Inc. 5 * Copyright (c) 1997, 1998, 1999, 2000 6 * Bill Paul <wpaul@osd.bsdi.com>. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Bill Paul. 19 * 4. Neither the name of the author nor the names of any co-contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 33 * THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 /* 38 * driver for homePNA PHYs 39 * This is really just a stub that allows us to identify homePNA-based 40 * transceicers and display the link status. MII-based homePNA PHYs 41 * only support one media type and no autonegotiation. If we were 42 * really clever, we could tweak some of the vendor-specific registers 43 * to optimize the link. 44 */ 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/socket.h> 50 #include <sys/errno.h> 51 #include <sys/module.h> 52 #include <sys/bus.h> 53 54 #include <net/if.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 "miibus_if.h" 62 63 static int pnaphy_probe(device_t); 64 static int pnaphy_attach(device_t); 65 66 static device_method_t pnaphy_methods[] = { 67 /* device interface */ 68 DEVMETHOD(device_probe, pnaphy_probe), 69 DEVMETHOD(device_attach, pnaphy_attach), 70 DEVMETHOD(device_detach, mii_phy_detach), 71 DEVMETHOD(device_shutdown, bus_generic_shutdown), 72 DEVMETHOD_END 73 }; 74 75 static driver_t pnaphy_driver = { 76 "pnaphy", 77 pnaphy_methods, 78 sizeof(struct mii_softc) 79 }; 80 81 DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, 0, 0); 82 83 static int pnaphy_service(struct mii_softc *, struct mii_data *,int); 84 85 static const struct mii_phydesc pnaphys[] = { 86 MII_PHY_DESC(yyAMD, 79c901home), 87 MII_PHY_END 88 }; 89 90 static const struct mii_phy_funcs pnaphy_funcs = { 91 pnaphy_service, 92 ukphy_status, 93 mii_phy_reset 94 }; 95 96 static int 97 pnaphy_probe(device_t dev) 98 { 99 100 return (mii_phy_dev_probe(dev, pnaphys, BUS_PROBE_DEFAULT)); 101 } 102 103 static int 104 pnaphy_attach(device_t dev) 105 { 106 107 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_IS_HPNA | 108 MIIF_NOMANPAUSE, &pnaphy_funcs, 1); 109 return (0); 110 } 111 112 static int 113 pnaphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 114 { 115 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 116 117 switch (cmd) { 118 case MII_POLLSTAT: 119 break; 120 121 case MII_MEDIACHG: 122 switch (IFM_SUBTYPE(ife->ifm_media)) { 123 case IFM_HPNA_1: 124 mii_phy_setmedia(sc); 125 break; 126 default: 127 return (EINVAL); 128 } 129 break; 130 131 case MII_TICK: 132 if (mii_phy_tick(sc) == EJUSTRETURN) 133 return (0); 134 break; 135 } 136 137 /* Update the media status. */ 138 PHY_STATUS(sc); 139 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) 140 mii->mii_media_active = IFM_ETHER | IFM_HPNA_1; 141 142 /* Callback if something changed. */ 143 mii_phy_update(sc, cmd); 144 return (0); 145 } 146