1 /* $NetBSD: rgmii.c,v 1.2 2020/07/06 09:34:17 rin Exp $ */ 2 /* 3 * Copyright (c) 2010 KIYOHARA Takashi 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 AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: rgmii.c,v 1.2 2020/07/06 09:34:17 rin Exp $"); 30 31 #include <sys/param.h> 32 #include <sys/bus.h> 33 #include <sys/device.h> 34 35 #include <net/if.h> 36 #include <net/if_media.h> 37 38 #include <powerpc/ibm4xx/dev/rgmiireg.h> 39 #include <powerpc/ibm4xx/dev/rmiivar.h> 40 #include <powerpc/ibm4xx/dev/opbvar.h> 41 42 43 static void rgmii_enable(device_t, int); 44 static void rgmii_disable(device_t, int); 45 static void rgmii_speed(device_t, int, int); 46 47 48 void 49 rgmii_attach(device_t self, int instance, 50 void (**enable)(device_t, int), 51 void (**disable)(device_t, int), 52 void (**speed)(device_t, int, int)) 53 { 54 struct opb_softc *sc = device_private(self); 55 uint32_t ssr; 56 57 instance %= 2; 58 59 rgmii_disable(self, instance); 60 ssr = bus_space_read_4(sc->sc_iot, sc->sc_rgmiih, RGMII0_SSR); 61 ssr &= ~SSR_SP(instance, SSR_SP_MASK); 62 bus_space_write_4(sc->sc_iot, sc->sc_rgmiih, RGMII0_SSR, ssr); 63 64 *enable = rgmii_enable; 65 *disable = rgmii_disable; 66 *speed = rgmii_speed; 67 } 68 69 static void 70 rgmii_enable(device_t self, int instance) 71 { 72 struct opb_softc *sc = device_private(self); 73 uint32_t fer; 74 75 instance %= 2; 76 77 fer = bus_space_read_4(sc->sc_iot, sc->sc_rgmiih, RGMII0_FER); 78 fer &= ~FER_MDIOEN_MASK; 79 fer |= FER_MDIOEN(instance); 80 bus_space_write_4(sc->sc_iot, sc->sc_rgmiih, RGMII0_FER, fer); 81 } 82 83 static void 84 rgmii_disable(device_t self, int instance) 85 { 86 struct opb_softc *sc = device_private(self); 87 uint32_t fer; 88 89 instance %= 2; 90 91 fer = bus_space_read_4(sc->sc_iot, sc->sc_rgmiih, RGMII0_FER); 92 fer &= ~FER_MDIOEN_MASK; 93 bus_space_write_4(sc->sc_iot, sc->sc_rgmiih, RGMII0_FER, fer); 94 } 95 96 static void 97 rgmii_speed(device_t self, int instance, int speed) 98 { 99 struct opb_softc *sc = device_private(self); 100 uint32_t ssr; 101 102 instance %= 2; 103 104 ssr = bus_space_read_4(sc->sc_iot, sc->sc_rgmiih, RGMII0_SSR); 105 ssr &= ~SSR_SP(instance, SSR_SP_MASK); 106 switch (speed) { 107 case IFM_1000_T: 108 ssr |= SSR_SP(instance, SSR_SP_1000MBPS); 109 break; 110 case IFM_100_TX: 111 ssr |= SSR_SP(instance, SSR_SP_100MBPS); 112 break; 113 case IFM_10_T: 114 ssr |= SSR_SP(instance, SSR_SP_10MBPS); 115 break; 116 } 117 bus_space_write_4(sc->sc_iot, sc->sc_rgmiih, RGMII0_SSR, ssr); 118 } 119