1 /* 2 * Copyright (c) 2022 Jared McNeill <jmcneill@invisible.ca> 3 * Copyright (c) 2022 Soren Schmidt <sos@deepcore.dk> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 19 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * Motorcomm YT8511C / YT8511H Integrated 10/100/1000 Gigabit Ethernet phy 30 */ 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/socket.h> 36 #include <sys/errno.h> 37 #include <sys/module.h> 38 #include <sys/bus.h> 39 40 #include <net/if.h> 41 #include <net/if_media.h> 42 43 #include <dev/mii/mii.h> 44 #include <dev/mii/miivar.h> 45 46 #include "miibus_if.h" 47 48 #define MCOMMPHY_OUI 0x000000 49 #define MCOMMPHY_MODEL 0x10 50 #define MCOMMPHY_REV 0x0a 51 52 #define EXT_REG_ADDR 0x1e 53 #define EXT_REG_DATA 0x1f 54 55 /* Extended registers */ 56 #define PHY_CLOCK_GATING_REG 0x0c 57 #define RX_CLK_DELAY_EN 0x0001 58 #define CLK_25M_SEL 0x0006 59 #define CLK_25M_SEL_125M 3 60 #define TX_CLK_DELAY_SEL 0x00f0 61 #define PHY_SLEEP_CONTROL1_REG 0x27 62 #define PLLON_IN_SLP 0x4000 63 64 #define LOWEST_SET_BIT(mask) ((((mask) - 1) & (mask)) ^ (mask)) 65 #define SHIFTIN(x, mask) ((x) * LOWEST_SET_BIT(mask)) 66 67 static int 68 mcommphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 69 { 70 switch (cmd) { 71 case MII_POLLSTAT: 72 break; 73 74 case MII_MEDIACHG: 75 mii_phy_setmedia(sc); 76 break; 77 78 case MII_TICK: 79 if (mii_phy_tick(sc) == EJUSTRETURN) 80 return (0); 81 break; 82 } 83 84 /* Update the media status. */ 85 PHY_STATUS(sc); 86 87 /* Callback if something changed. */ 88 mii_phy_update(sc, cmd); 89 90 return (0); 91 } 92 93 static const struct mii_phy_funcs mcommphy_funcs = { 94 mcommphy_service, 95 ukphy_status, 96 mii_phy_reset 97 }; 98 99 static int 100 mcommphy_probe(device_t dev) 101 { 102 struct mii_attach_args *ma = device_get_ivars(dev); 103 104 /* 105 * The YT8511C reports an OUI of 0. Best we can do here is to match 106 * exactly the contents of the PHY identification registers. 107 */ 108 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MCOMMPHY_OUI && 109 MII_MODEL(ma->mii_id2) == MCOMMPHY_MODEL && 110 MII_REV(ma->mii_id2) == MCOMMPHY_REV) { 111 device_set_desc(dev, "Motorcomm YT8511 media interface"); 112 return BUS_PROBE_DEFAULT; 113 } 114 return (ENXIO); 115 } 116 117 static int 118 mcommphy_attach(device_t dev) 119 { 120 struct mii_softc *sc = device_get_softc(dev); 121 uint16_t oldaddr, data; 122 123 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &mcommphy_funcs, 0); 124 125 PHY_RESET(sc); 126 127 /* begin chip stuff */ 128 oldaddr = PHY_READ(sc, EXT_REG_ADDR); 129 130 PHY_WRITE(sc, EXT_REG_ADDR, PHY_CLOCK_GATING_REG); 131 data = PHY_READ(sc, EXT_REG_DATA); 132 data &= ~CLK_25M_SEL; 133 data |= SHIFTIN(CLK_25M_SEL_125M, CLK_25M_SEL); 134 if (sc->mii_flags & MIIF_RX_DELAY) { 135 data |= RX_CLK_DELAY_EN; 136 } else { 137 data &= ~RX_CLK_DELAY_EN; 138 } 139 data &= ~TX_CLK_DELAY_SEL; 140 if (sc->mii_flags & MIIF_TX_DELAY) { 141 data |= SHIFTIN(0xf, TX_CLK_DELAY_SEL); 142 } else { 143 data |= SHIFTIN(0x2, TX_CLK_DELAY_SEL); 144 } 145 PHY_WRITE(sc, EXT_REG_DATA, data); 146 147 PHY_WRITE(sc, EXT_REG_ADDR, PHY_SLEEP_CONTROL1_REG); 148 data = PHY_READ(sc, EXT_REG_DATA); 149 data |= PLLON_IN_SLP; 150 PHY_WRITE(sc, EXT_REG_DATA, data); 151 152 PHY_WRITE(sc, EXT_REG_ADDR, oldaddr); 153 /* end chip stuff */ 154 155 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask; 156 if (sc->mii_capabilities & BMSR_EXTSTAT) 157 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 158 device_printf(dev, " "); 159 mii_phy_add_media(sc); 160 printf("\n"); 161 162 MIIBUS_MEDIAINIT(sc->mii_dev); 163 164 return (0); 165 } 166 167 168 static device_method_t mcommphy_methods[] = { 169 /* device interface */ 170 DEVMETHOD(device_probe, mcommphy_probe), 171 DEVMETHOD(device_attach, mcommphy_attach), 172 DEVMETHOD(device_detach, mii_phy_detach), 173 DEVMETHOD(device_shutdown, bus_generic_shutdown), 174 DEVMETHOD_END 175 }; 176 177 static driver_t mcommphy_driver = { 178 "mcommphy", 179 mcommphy_methods, 180 sizeof(struct mii_softc) 181 }; 182 183 DRIVER_MODULE(mcommphy, miibus, mcommphy_driver, 0, 0); 184