1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2022 Adrian Chadd <adrian@FreeBSD.org>. 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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/param.h> 29 #include <sys/bus.h> 30 #include <sys/errno.h> 31 #include <sys/kernel.h> 32 #include <sys/malloc.h> 33 #include <sys/module.h> 34 #include <sys/socket.h> 35 #include <sys/sockio.h> 36 #include <sys/sysctl.h> 37 #include <sys/systm.h> 38 39 #include <net/if.h> 40 #include <net/if_var.h> 41 #include <net/if_arp.h> 42 #include <net/ethernet.h> 43 #include <net/if_dl.h> 44 #include <net/if_media.h> 45 #include <net/if_types.h> 46 47 #include <machine/bus.h> 48 #include <dev/iicbus/iic.h> 49 #include <dev/iicbus/iiconf.h> 50 #include <dev/iicbus/iicbus.h> 51 #include <dev/mii/mii.h> 52 #include <dev/mii/miivar.h> 53 #include <dev/mdio/mdio.h> 54 #include <dev/extres/clk/clk.h> 55 #include <dev/extres/hwreset/hwreset.h> 56 57 #include <dev/fdt/fdt_common.h> 58 #include <dev/ofw/ofw_bus.h> 59 #include <dev/ofw/ofw_bus_subr.h> 60 61 #include <dev/etherswitch/etherswitch.h> 62 63 #include <dev/etherswitch/ar40xx/ar40xx_var.h> 64 #include <dev/etherswitch/ar40xx/ar40xx_reg.h> 65 #include <dev/etherswitch/ar40xx/ar40xx_hw.h> 66 67 #include <dev/etherswitch/ar40xx/ar40xx_hw_mdio.h> 68 69 #include "mdio_if.h" 70 #include "miibus_if.h" 71 #include "etherswitch_if.h" 72 73 int 74 ar40xx_hw_phy_dbg_write(struct ar40xx_softc *sc, int phy, uint16_t dbg, 75 uint16_t data) 76 { 77 AR40XX_LOCK_ASSERT(sc); 78 device_printf(sc->sc_dev, "%s: TODO\n", __func__); 79 return (0); 80 } 81 82 int 83 ar40xx_hw_phy_dbg_read(struct ar40xx_softc *sc, int phy, uint16_t dbg) 84 { 85 AR40XX_LOCK_ASSERT(sc); 86 device_printf(sc->sc_dev, "%s: TODO\n", __func__); 87 return (-1); 88 } 89 90 int 91 ar40xx_hw_phy_mmd_write(struct ar40xx_softc *sc, uint32_t phy_id, 92 uint16_t mmd_num, uint16_t reg_id, uint16_t reg_val) 93 { 94 95 AR40XX_LOCK_ASSERT(sc); 96 97 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_ADDR, 98 mmd_num); 99 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_DATA, 100 reg_id); 101 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_ADDR, 102 0x4000 | mmd_num); 103 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_DATA, 104 reg_val); 105 106 return (0); 107 } 108 109 int 110 ar40xx_hw_phy_mmd_read(struct ar40xx_softc *sc, uint32_t phy_id, 111 uint16_t mmd_num, uint16_t reg_id) 112 { 113 uint16_t value; 114 115 AR40XX_LOCK_ASSERT(sc); 116 117 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_ADDR, 118 mmd_num); 119 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_DATA, 120 reg_id); 121 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_ADDR, 122 0x4000 | mmd_num); 123 124 value = MDIO_READREG(sc->sc_mdio_dev, phy_id, 125 AR40XX_MII_ATH_MMD_DATA); 126 127 return value; 128 } 129 130