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 driver_t pnaphy_driver = { 78 "pnaphy", 79 pnaphy_methods, 80 sizeof(struct mii_softc) 81 }; 82 83 DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, 0, 0); 84 85 static int pnaphy_service(struct mii_softc *, struct mii_data *,int); 86 87 static const struct mii_phydesc pnaphys[] = { 88 MII_PHY_DESC(yyAMD, 79c901home), 89 MII_PHY_END 90 }; 91 92 static const struct mii_phy_funcs pnaphy_funcs = { 93 pnaphy_service, 94 ukphy_status, 95 mii_phy_reset 96 }; 97 98 static int 99 pnaphy_probe(device_t dev) 100 { 101 102 return (mii_phy_dev_probe(dev, pnaphys, BUS_PROBE_DEFAULT)); 103 } 104 105 static int 106 pnaphy_attach(device_t dev) 107 { 108 109 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_IS_HPNA | 110 MIIF_NOMANPAUSE, &pnaphy_funcs, 1); 111 return (0); 112 } 113 114 static int 115 pnaphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 116 { 117 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 118 119 switch (cmd) { 120 case MII_POLLSTAT: 121 break; 122 123 case MII_MEDIACHG: 124 switch (IFM_SUBTYPE(ife->ifm_media)) { 125 case IFM_HPNA_1: 126 mii_phy_setmedia(sc); 127 break; 128 default: 129 return (EINVAL); 130 } 131 break; 132 133 case MII_TICK: 134 if (mii_phy_tick(sc) == EJUSTRETURN) 135 return (0); 136 break; 137 } 138 139 /* Update the media status. */ 140 PHY_STATUS(sc); 141 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) 142 mii->mii_media_active = IFM_ETHER | IFM_HPNA_1; 143 144 /* Callback if something changed. */ 145 mii_phy_update(sc, cmd); 146 return (0); 147 } 148