1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 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 <sys/param.h> 35 #include <sys/bus.h> 36 #include <sys/kernel.h> 37 #include <sys/module.h> 38 #include <sys/rman.h> 39 #include <sys/socket.h> 40 #include <sys/systm.h> 41 42 #include <machine/bus.h> 43 #include <machine/resource.h> 44 45 #include <net/ethernet.h> 46 #include <net/if.h> 47 #include <net/if_media.h> 48 #include <net/if_var.h> 49 50 #include <dev/mii/mii.h> 51 #include <dev/mii/miivar.h> 52 53 #include <dev/fdt/fdt_common.h> 54 #include <dev/ofw/openfirm.h> 55 #include <dev/ofw/ofw_bus.h> 56 #include <dev/ofw/ofw_bus_subr.h> 57 58 #include <dev/altera/atse/if_atsereg.h> 59 60 /* "device miibus" required. See GENERIC if you get errors here. */ 61 #include "miibus_if.h" 62 63 static int 64 atse_probe_fdt(device_t dev) 65 { 66 67 if (!ofw_bus_status_okay(dev)) 68 return (ENXIO); 69 70 if (!ofw_bus_is_compatible(dev, "altera,atse")) { 71 return (ENXIO); 72 } 73 74 device_set_desc(dev, "Altera Triple-Speed Ethernet MegaCore"); 75 76 return (BUS_PROBE_DEFAULT); 77 } 78 79 static int 80 atse_attach_fdt(device_t dev) 81 { 82 struct atse_softc *sc; 83 int error; 84 85 sc = device_get_softc(dev); 86 sc->atse_dev = dev; 87 sc->atse_unit = device_get_unit(dev); 88 89 /* 90 * FDT has the list of our resources. Given we are using multiple 91 * memory regions and possibly multiple interrupts, we need to attach 92 * them in the order specified in .dts: 93 * MAC, RX and RXC FIFO, TX and TXC FIFO; RX INTR, TX INTR. 94 */ 95 96 /* MAC: Avalon-MM, atse management register region. */ 97 sc->atse_mem_rid = 0; 98 sc->atse_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 99 &sc->atse_mem_rid, RF_ACTIVE); 100 if (sc->atse_mem_res == NULL) { 101 device_printf(dev, "failed to map memory for ctrl region\n"); 102 /* Cleanup. */ 103 atse_detach_resources(dev); 104 105 return (ENXIO); 106 } 107 if (bootverbose) 108 device_printf(sc->atse_dev, "MAC ctrl region at mem %p-%p\n", 109 (void *)rman_get_start(sc->atse_mem_res), 110 (void *)(rman_get_start(sc->atse_mem_res) + 111 rman_get_size(sc->atse_mem_res))); 112 113 error = atse_attach(dev); 114 if (error) { 115 /* Cleanup. */ 116 atse_detach_resources(dev); 117 118 return (error); 119 } 120 121 return (0); 122 } 123 124 static device_method_t atse_methods_fdt[] = { 125 /* Device interface */ 126 DEVMETHOD(device_probe, atse_probe_fdt), 127 DEVMETHOD(device_attach, atse_attach_fdt), 128 DEVMETHOD(device_detach, atse_detach_dev), 129 130 /* MII interface */ 131 DEVMETHOD(miibus_readreg, atse_miibus_readreg), 132 DEVMETHOD(miibus_writereg, atse_miibus_writereg), 133 DEVMETHOD(miibus_statchg, atse_miibus_statchg), 134 135 DEVMETHOD_END 136 }; 137 138 static driver_t atse_driver_fdt = { 139 "atse", 140 atse_methods_fdt, 141 sizeof(struct atse_softc) 142 }; 143 144 DRIVER_MODULE(atse, simplebus, atse_driver_fdt, 0, 0); 145 DRIVER_MODULE(miibus, atse, miibus_driver, 0, 0); 146