1/*- 2 * Copyright (C) 2001 Eduardo Horvath. 3 * Copyright (c) 2007 Marius Strobl <marius@FreeBSD.org> 4 * All rights reserved. 5 * 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * from: NetBSD: if_gem_pci.c,v 1.7 2001/10/18 15:09:15 thorpej Exp 29 */ 30 31#include <sys/cdefs.h> 32__FBSDID("$FreeBSD$"); 33 34/* 35 * SBus bindings for Sun GEM Ethernet controllers 36 */ 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/bus.h> 41#include <sys/kernel.h> 42#include <sys/lock.h> 43#include <sys/module.h> 44#include <sys/mutex.h> 45#include <sys/resource.h> 46#include <sys/rman.h> 47#include <sys/socket.h> 48 49#include <net/ethernet.h> 50#include <net/if.h> 51 52#include <dev/ofw/ofw_bus.h> 53 54#include <machine/bus.h> 55#include <machine/ofw_machdep.h> 56#include <machine/resource.h> 57 58#include <sparc64/sbus/sbusvar.h> 59 60#include <dev/gem/if_gemreg.h> 61#include <dev/gem/if_gemvar.h> 62 63#include "miibus_if.h" 64 65static device_probe_t gem_sbus_probe; 66static device_attach_t gem_sbus_attach; 67static device_detach_t gem_sbus_detach; 68static device_suspend_t gem_sbus_suspend; 69static device_resume_t gem_sbus_resume; 70 71static device_method_t gem_sbus_methods[] = { 72 /* Device interface */ 73 DEVMETHOD(device_probe, gem_sbus_probe), 74 DEVMETHOD(device_attach, gem_sbus_attach), 75 DEVMETHOD(device_detach, gem_sbus_detach), 76 DEVMETHOD(device_suspend, gem_sbus_suspend), 77 DEVMETHOD(device_resume, gem_sbus_resume), 78 /* Use the suspend handler here, it is all that is required. */ 79 DEVMETHOD(device_shutdown, gem_sbus_suspend), 80 81 /* MII interface */ 82 DEVMETHOD(miibus_readreg, gem_mii_readreg), 83 DEVMETHOD(miibus_writereg, gem_mii_writereg), 84 DEVMETHOD(miibus_statchg, gem_mii_statchg), 85 86 DEVMETHOD_END 87}; 88 89static driver_t gem_sbus_driver = { 90 "gem", 91 gem_sbus_methods, 92 sizeof(struct gem_softc) 93}; 94 95DRIVER_MODULE(gem, sbus, gem_sbus_driver, gem_devclass, 0, 0); 96MODULE_DEPEND(gem, sbus, 1, 1, 1); 97MODULE_DEPEND(gem, ether, 1, 1, 1); 98 99static int 100gem_sbus_probe(device_t dev) 101{ 102 103 if (strcmp(ofw_bus_get_name(dev), "network") == 0 && 104 ofw_bus_get_compat(dev) != NULL && 105 strcmp(ofw_bus_get_compat(dev), "SUNW,sbus-gem") == 0) { 106 device_set_desc(dev, "Sun GEM Gigabit Ethernet"); 107 return (0); 108 } 109 110 return (ENXIO); 111} 112 113static struct resource_spec gem_sbus_res_spec[] = { 114 { SYS_RES_IRQ, 0, RF_SHAREABLE | RF_ACTIVE }, /* GEM_RES_INTR */ 115 { SYS_RES_MEMORY, 1, RF_ACTIVE }, /* GEM_RES_BANK1 */ 116 { SYS_RES_MEMORY, 0, RF_ACTIVE }, /* GEM_RES_BANK2 */ 117 { -1, 0 } 118}; 119 120static int 121gem_sbus_attach(device_t dev) 122{ 123 struct gem_softc *sc; 124 int burst; 125 uint32_t val; 126 127 sc = device_get_softc(dev); 128 sc->sc_variant = GEM_SUN_GEM; 129 sc->sc_dev = dev; 130 /* All known SBus models use a SERDES. */ 131 sc->sc_flags = GEM_SERDES; 132 133 if (bus_alloc_resources(dev, gem_sbus_res_spec, sc->sc_res)) { 134 device_printf(dev, "failed to allocate resources\n"); 135 bus_release_resources(dev, gem_sbus_res_spec, sc->sc_res); 136 return (ENXIO); 137 } 138 139 GEM_LOCK_INIT(sc, device_get_nameunit(dev)); 140 141 OF_getetheraddr(dev, sc->sc_enaddr); 142 143 burst = sbus_get_burstsz(dev); 144 val = GEM_SBUS_CFG_PARITY; 145 if ((burst & SBUS_BURST64_MASK) != 0) { 146 val |= GEM_SBUS_CFG_64BIT; 147 burst >>= SBUS_BURST64_SHIFT; 148 } 149 if ((burst & SBUS_BURST_64) != 0) 150 val |= GEM_SBUS_CFG_BURST_64; 151 else if ((burst & SBUS_BURST_32) != 0) 152 val |= GEM_SBUS_CFG_BURST_32; 153 else { 154 device_printf(dev, "unsupported burst size\n"); 155 goto fail; 156 } 157 /* Reset the SBus interface only. */ 158 (void)GEM_BANK2_READ_4(sc, GEM_SBUS_BIF_RESET); 159 DELAY(100); 160 GEM_BANK2_WRITE_4(sc, GEM_SBUS_CONFIG, val); 161 162 if (gem_attach(sc) != 0) { 163 device_printf(dev, "could not be attached\n"); 164 goto fail; 165 } 166 167 if (bus_setup_intr(dev, sc->sc_res[GEM_RES_INTR], INTR_TYPE_NET | 168 INTR_MPSAFE, NULL, gem_intr, sc, &sc->sc_ih) != 0) { 169 device_printf(dev, "failed to set up interrupt\n"); 170 gem_detach(sc); 171 goto fail; 172 } 173 return (0); 174 175 fail: 176 GEM_LOCK_DESTROY(sc); 177 bus_release_resources(dev, gem_sbus_res_spec, sc->sc_res); 178 return (ENXIO); 179} 180 181static int 182gem_sbus_detach(device_t dev) 183{ 184 struct gem_softc *sc; 185 186 sc = device_get_softc(dev); 187 bus_teardown_intr(dev, sc->sc_res[GEM_RES_INTR], sc->sc_ih); 188 gem_detach(sc); 189 GEM_LOCK_DESTROY(sc); 190 bus_release_resources(dev, gem_sbus_res_spec, sc->sc_res); 191 return (0); 192} 193 194static int 195gem_sbus_suspend(device_t dev) 196{ 197 198 gem_suspend(device_get_softc(dev)); 199 return (0); 200} 201 202static int 203gem_sbus_resume(device_t dev) 204{ 205 206 gem_resume(device_get_softc(dev)); 207 return (0); 208} 209