1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2012,2013 Bjoern A. Zeeb 5 * All rights reserved. 6 * 7 * This software was developed by SRI International and the University of 8 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-11-C-0249) 9 * ("MRC2"), as part of the DARPA MRC research programme. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 #include "opt_device_polling.h" 35 36 #include <sys/param.h> 37 #include <sys/kernel.h> 38 #include <sys/bus.h> 39 #include <sys/module.h> 40 #include <sys/rman.h> 41 #include <sys/socket.h> 42 #include <sys/types.h> 43 44 #include <machine/bus.h> 45 #include <machine/resource.h> 46 47 #include <net/ethernet.h> 48 #include <net/if.h> 49 #include <net/if_media.h> 50 #include <net/if_var.h> 51 52 #include <dev/mii/mii.h> 53 #include <dev/mii/miivar.h> 54 55 #include <dev/altera/atse/if_atsereg.h> 56 57 /* "device miibus" required. See GENERIC if you get errors here. */ 58 #include "miibus_if.h" 59 60 MODULE_DEPEND(atse, ether, 1, 1, 1); 61 MODULE_DEPEND(atse, miibus, 1, 1, 1); 62 63 /* 64 * Device routines for interacting with nexus (probe, attach, detach) & helpers. 65 * XXX We should add suspend/resume later. 66 */ 67 static int __unused 68 atse_resource_int(device_t dev, const char *resname, int *v) 69 { 70 int error; 71 72 error = resource_int_value(device_get_name(dev), device_get_unit(dev), 73 resname, v); 74 if (error != 0) { 75 /* If it does not exist, we fail, so not ingoring ENOENT. */ 76 device_printf(dev, "could not fetch '%s' hint\n", resname); 77 return (error); 78 } 79 80 return (0); 81 } 82 83 static int __unused 84 atse_resource_long(device_t dev, const char *resname, long *v) 85 { 86 int error; 87 88 error = resource_long_value(device_get_name(dev), device_get_unit(dev), 89 resname, v); 90 if (error != 0) { 91 /* If it does not exist, we fail, so not ingoring ENOENT. */ 92 device_printf(dev, "could not fetch '%s' hint\n", resname); 93 return (error); 94 } 95 96 return (0); 97 } 98 99 static int 100 atse_probe_nexus(device_t dev) 101 { 102 103 device_set_desc(dev, "Altera Triple-Speed Ethernet MegaCore"); 104 105 return (BUS_PROBE_NOWILDCARD); 106 } 107 108 static int 109 atse_attach_nexus(device_t dev) 110 { 111 struct atse_softc *sc; 112 int error; 113 114 sc = device_get_softc(dev); 115 sc->atse_dev = dev; 116 sc->atse_unit = device_get_unit(dev); 117 118 /* Avalon-MM, atse management register region. */ 119 sc->atse_mem_rid = 0; 120 sc->atse_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 121 &sc->atse_mem_rid, RF_ACTIVE); 122 if (sc->atse_mem_res == NULL) { 123 device_printf(dev, "failed to map memory for ctrl region\n"); 124 return (ENXIO); 125 } 126 127 error = atse_attach(dev); 128 if (error) { 129 /* Cleanup. */ 130 atse_detach_resources(dev); 131 return (error); 132 } 133 134 return (0); 135 } 136 137 static device_method_t atse_methods_nexus[] = { 138 /* Device interface */ 139 DEVMETHOD(device_probe, atse_probe_nexus), 140 DEVMETHOD(device_attach, atse_attach_nexus), 141 DEVMETHOD(device_detach, atse_detach_dev), 142 143 /* MII interface */ 144 DEVMETHOD(miibus_readreg, atse_miibus_readreg), 145 DEVMETHOD(miibus_writereg, atse_miibus_writereg), 146 DEVMETHOD(miibus_statchg, atse_miibus_statchg), 147 148 DEVMETHOD_END 149 }; 150 151 static driver_t atse_driver_nexus = { 152 "atse", 153 atse_methods_nexus, 154 sizeof(struct atse_softc) 155 }; 156 157 DRIVER_MODULE(atse, nexus, atse_driver_nexus, 0, 0); 158 DRIVER_MODULE(miibus, atse, miibus_driver, 0, 0); 159