1 /*- 2 * Copyright (c) 2013 Bjoern A. Zeeb 3 * All rights reserved. 4 * 5 * This software was developed by SRI International and the University of 6 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-11-C-0249) 7 * ("MRC2"), as part of the DARPA MRC research programme. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 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 54 #include <dev/fdt/fdt_common.h> 55 #include <dev/ofw/openfirm.h> 56 #include <dev/ofw/ofw_bus.h> 57 #include <dev/ofw/ofw_bus_subr.h> 58 59 #include <dev/altera/atse/if_atsereg.h> 60 61 /* "device miibus" required. See GENERIC if you get errors here. */ 62 #include "miibus_if.h" 63 64 static int 65 atse_probe_fdt(device_t dev) 66 { 67 68 if (!ofw_bus_status_okay(dev)) 69 return (ENXIO); 70 71 if (ofw_bus_is_compatible(dev, "altera,atse")) { 72 device_set_desc(dev, "Altera Triple-Speed Ethernet MegaCore"); 73 return (BUS_PROBE_DEFAULT); 74 } 75 return (ENXIO); 76 } 77 78 static int 79 atse_attach_fdt(device_t dev) 80 { 81 struct atse_softc *sc; 82 int error; 83 84 sc = device_get_softc(dev); 85 sc->atse_dev = dev; 86 sc->atse_unit = device_get_unit(dev); 87 88 /* 89 * FDT has the list of our resources. Given we are using multiple 90 * memory regions and possibly multiple interrupts, we need to attach 91 * them in the order specified in .dts: 92 * MAC, RX and RXC FIFO, TX and TXC FIFO; RX INTR, TX INTR. 93 */ 94 95 /* MAC: Avalon-MM, atse management register region. */ 96 sc->atse_mem_rid = 0; 97 sc->atse_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 98 &sc->atse_mem_rid, RF_ACTIVE); 99 if (sc->atse_mem_res == NULL) { 100 device_printf(dev, "failed to map memory for ctrl region\n"); 101 error = ENXIO; 102 goto err; 103 } 104 if (bootverbose) 105 device_printf(sc->atse_dev, "MAC ctrl region at mem %p-%p\n", 106 (void *)rman_get_start(sc->atse_mem_res), 107 (void *)(rman_get_start(sc->atse_mem_res) + 108 rman_get_size(sc->atse_mem_res))); 109 110 /* 111 * RX and RXC FIFO memory regions. 112 * 0x00: 2 * 32bit FIFO data, 113 * 0x20: 8 * 32bit FIFO ctrl, Avalon-ST Sink to Avalon-MM R-Slave. 114 */ 115 sc->atse_rx_mem_rid = 1; 116 sc->atse_rx_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 117 &sc->atse_rx_mem_rid, RF_ACTIVE); 118 if (sc->atse_rx_mem_res == NULL) { 119 device_printf(dev, "failed to map memory for RX FIFO\n"); 120 error = ENXIO; 121 goto err; 122 } 123 if (bootverbose) 124 device_printf(sc->atse_dev, "RX FIFO at mem %p-%p\n", 125 (void *)rman_get_start(sc->atse_rx_mem_res), 126 (void *)(rman_get_start(sc->atse_rx_mem_res) + 127 rman_get_size(sc->atse_rx_mem_res))); 128 129 sc->atse_rxc_mem_rid = 2; 130 sc->atse_rxc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 131 &sc->atse_rxc_mem_rid, RF_ACTIVE); 132 if (sc->atse_rxc_mem_res == NULL) { 133 device_printf(dev, "failed to map memory for RXC FIFO\n"); 134 error = ENXIO; 135 goto err; 136 } 137 if (bootverbose) 138 device_printf(sc->atse_dev, "RXC FIFO at mem %p-%p\n", 139 (void *)rman_get_start(sc->atse_rxc_mem_res), 140 (void *)(rman_get_start(sc->atse_rxc_mem_res) + 141 rman_get_size(sc->atse_rxc_mem_res))); 142 143 /* 144 * TX and TXC FIFO memory regions. 145 * 0x00: 2 * 32bit FIFO data, 146 * 0x20: 8 * 32bit FIFO ctrl, Avalon-MM W-Slave to Avalon-ST Source. 147 */ 148 sc->atse_tx_mem_rid = 3; 149 sc->atse_tx_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 150 &sc->atse_tx_mem_rid, RF_ACTIVE); 151 if (sc->atse_tx_mem_res == NULL) { 152 device_printf(dev, "failed to map memory for TX FIFO\n"); 153 error = ENXIO; 154 goto err; 155 } 156 if (bootverbose) 157 device_printf(sc->atse_dev, "TX FIFO at mem %p-%p\n", 158 (void *)rman_get_start(sc->atse_tx_mem_res), 159 (void *)(rman_get_start(sc->atse_tx_mem_res) + 160 rman_get_size(sc->atse_tx_mem_res))); 161 162 sc->atse_txc_mem_rid = 4; 163 sc->atse_txc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 164 &sc->atse_txc_mem_rid, RF_ACTIVE); 165 if (sc->atse_txc_mem_res == NULL) { 166 device_printf(dev, "failed to map memory for TXC FIFO\n"); 167 error = ENXIO; 168 goto err; 169 } 170 if (bootverbose) 171 device_printf(sc->atse_dev, "TXC FIFO at mem %p-%p\n", 172 (void *)rman_get_start(sc->atse_txc_mem_res), 173 (void *)(rman_get_start(sc->atse_txc_mem_res) + 174 rman_get_size(sc->atse_txc_mem_res))); 175 176 /* (Optional) RX and TX IRQ. */ 177 sc->atse_rx_irq_rid = 0; 178 sc->atse_rx_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 179 &sc->atse_rx_irq_rid, RF_ACTIVE | RF_SHAREABLE); 180 sc->atse_tx_irq_rid = 1; 181 sc->atse_tx_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 182 &sc->atse_tx_irq_rid, RF_ACTIVE | RF_SHAREABLE); 183 184 error = atse_attach(dev); 185 if (error) 186 goto err; 187 188 return (0); 189 190 err: 191 /* Cleanup. */ 192 atse_detach_resources(dev); 193 194 return (error); 195 } 196 197 static device_method_t atse_methods_fdt[] = { 198 /* Device interface */ 199 DEVMETHOD(device_probe, atse_probe_fdt), 200 DEVMETHOD(device_attach, atse_attach_fdt), 201 DEVMETHOD(device_detach, atse_detach_dev), 202 203 /* MII interface */ 204 DEVMETHOD(miibus_readreg, atse_miibus_readreg), 205 DEVMETHOD(miibus_writereg, atse_miibus_writereg), 206 DEVMETHOD(miibus_statchg, atse_miibus_statchg), 207 208 DEVMETHOD_END 209 }; 210 211 static driver_t atse_driver_fdt = { 212 "atse", 213 atse_methods_fdt, 214 sizeof(struct atse_softc) 215 }; 216 217 DRIVER_MODULE(atse, simplebus, atse_driver_fdt, atse_devclass, 0, 0); 218 DRIVER_MODULE(miibus, atse, miibus_driver, miibus_devclass, 0, 0); 219 220 /* end */ 221