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 __FBSDID("$FreeBSD$"); 35 36 #include <sys/param.h> 37 #include <sys/bus.h> 38 #include <sys/kernel.h> 39 #include <sys/module.h> 40 #include <sys/rman.h> 41 #include <sys/socket.h> 42 #include <sys/systm.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/fdt/fdt_common.h> 56 #include <dev/ofw/openfirm.h> 57 #include <dev/ofw/ofw_bus.h> 58 #include <dev/ofw/ofw_bus_subr.h> 59 60 #include <dev/altera/atse/if_atsereg.h> 61 62 /* "device miibus" required. See GENERIC if you get errors here. */ 63 #include "miibus_if.h" 64 65 static int 66 atse_probe_fdt(device_t dev) 67 { 68 69 if (!ofw_bus_status_okay(dev)) 70 return (ENXIO); 71 72 if (!ofw_bus_is_compatible(dev, "altera,atse")) { 73 return (ENXIO); 74 } 75 76 device_set_desc(dev, "Altera Triple-Speed Ethernet MegaCore"); 77 78 return (BUS_PROBE_DEFAULT); 79 } 80 81 static int 82 atse_attach_fdt(device_t dev) 83 { 84 struct atse_softc *sc; 85 int error; 86 87 sc = device_get_softc(dev); 88 sc->atse_dev = dev; 89 sc->atse_unit = device_get_unit(dev); 90 91 /* 92 * FDT has the list of our resources. Given we are using multiple 93 * memory regions and possibly multiple interrupts, we need to attach 94 * them in the order specified in .dts: 95 * MAC, RX and RXC FIFO, TX and TXC FIFO; RX INTR, TX INTR. 96 */ 97 98 /* MAC: Avalon-MM, atse management register region. */ 99 sc->atse_mem_rid = 0; 100 sc->atse_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 101 &sc->atse_mem_rid, RF_ACTIVE); 102 if (sc->atse_mem_res == NULL) { 103 device_printf(dev, "failed to map memory for ctrl region\n"); 104 /* Cleanup. */ 105 atse_detach_resources(dev); 106 107 return (ENXIO); 108 } 109 if (bootverbose) 110 device_printf(sc->atse_dev, "MAC ctrl region at mem %p-%p\n", 111 (void *)rman_get_start(sc->atse_mem_res), 112 (void *)(rman_get_start(sc->atse_mem_res) + 113 rman_get_size(sc->atse_mem_res))); 114 115 error = atse_attach(dev); 116 if (error) { 117 /* Cleanup. */ 118 atse_detach_resources(dev); 119 120 return (error); 121 } 122 123 return (0); 124 } 125 126 static device_method_t atse_methods_fdt[] = { 127 /* Device interface */ 128 DEVMETHOD(device_probe, atse_probe_fdt), 129 DEVMETHOD(device_attach, atse_attach_fdt), 130 DEVMETHOD(device_detach, atse_detach_dev), 131 132 /* MII interface */ 133 DEVMETHOD(miibus_readreg, atse_miibus_readreg), 134 DEVMETHOD(miibus_writereg, atse_miibus_writereg), 135 DEVMETHOD(miibus_statchg, atse_miibus_statchg), 136 137 DEVMETHOD_END 138 }; 139 140 static driver_t atse_driver_fdt = { 141 "atse", 142 atse_methods_fdt, 143 sizeof(struct atse_softc) 144 }; 145 146 DRIVER_MODULE(atse, simplebus, atse_driver_fdt, 0, 0); 147 DRIVER_MODULE(miibus, atse, miibus_driver, 0, 0); 148