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 __FBSDID("$FreeBSD$"); 38 39 /* 40 * driver for homePNA PHYs 41 * This is really just a stub that allows us to identify homePNA-based 42 * transceicers and display the link status. MII-based homePNA PHYs 43 * only support one media type and no autonegotiation. If we were 44 * really clever, we could tweak some of the vendor-specific registers 45 * to optimize the link. 46 */ 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/socket.h> 52 #include <sys/errno.h> 53 #include <sys/module.h> 54 #include <sys/bus.h> 55 56 #include <net/if.h> 57 #include <net/if_media.h> 58 59 #include <dev/mii/mii.h> 60 #include <dev/mii/miivar.h> 61 #include "miidevs.h" 62 63 #include "miibus_if.h" 64 65 static int pnaphy_probe(device_t); 66 static int pnaphy_attach(device_t); 67 68 static device_method_t pnaphy_methods[] = { 69 /* device interface */ 70 DEVMETHOD(device_probe, pnaphy_probe), 71 DEVMETHOD(device_attach, pnaphy_attach), 72 DEVMETHOD(device_detach, mii_phy_detach), 73 DEVMETHOD(device_shutdown, bus_generic_shutdown), 74 DEVMETHOD_END 75 }; 76 77 static devclass_t pnaphy_devclass; 78 79 static driver_t pnaphy_driver = { 80 "pnaphy", 81 pnaphy_methods, 82 sizeof(struct mii_softc) 83 }; 84 85 DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, pnaphy_devclass, 0, 0); 86 87 static int pnaphy_service(struct mii_softc *, struct mii_data *,int); 88 89 static const struct mii_phydesc pnaphys[] = { 90 MII_PHY_DESC(yyAMD, 79c901home), 91 MII_PHY_END 92 }; 93 94 static const struct mii_phy_funcs pnaphy_funcs = { 95 pnaphy_service, 96 ukphy_status, 97 mii_phy_reset 98 }; 99 100 static int 101 pnaphy_probe(device_t dev) 102 { 103 104 return (mii_phy_dev_probe(dev, pnaphys, BUS_PROBE_DEFAULT)); 105 } 106 107 static int 108 pnaphy_attach(device_t dev) 109 { 110 111 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_IS_HPNA | 112 MIIF_NOMANPAUSE, &pnaphy_funcs, 1); 113 return (0); 114 } 115 116 static int 117 pnaphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 118 { 119 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 120 121 switch (cmd) { 122 case MII_POLLSTAT: 123 break; 124 125 case MII_MEDIACHG: 126 switch (IFM_SUBTYPE(ife->ifm_media)) { 127 case IFM_HPNA_1: 128 mii_phy_setmedia(sc); 129 break; 130 default: 131 return (EINVAL); 132 } 133 break; 134 135 case MII_TICK: 136 if (mii_phy_tick(sc) == EJUSTRETURN) 137 return (0); 138 break; 139 } 140 141 /* Update the media status. */ 142 PHY_STATUS(sc); 143 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) 144 mii->mii_media_active = IFM_ETHER | IFM_HPNA_1; 145 146 /* Callback if something changed. */ 147 mii_phy_update(sc, cmd); 148 return (0); 149 } 150