if_atse_nexus.c revision 257336
1/*- 2 * Copyright (c) 2012,2013 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: head/sys/dev/altera/atse/if_atse_nexus.c 257336 2013-10-29 13:48:41Z nwhitehorn $"); 33 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 60MODULE_DEPEND(atse, ether, 1, 1, 1); 61MODULE_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 */ 67static int 68atse_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 83static int 84atse_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 99static int 100atse_probe_nexus(device_t dev) 101{ 102 struct resource *res; 103 long l; 104 int error, rid; 105 106 /* 107 * It is almost impossible to properly probe this device. We must 108 * rely on hints being set correctly. So try to get hints and 109 * one memory mapping. Must cleanup and do again in attach but 110 * should not probe successfully if not able to attach later. 111 */ 112 error = atse_resource_int(dev, "rx_irq", &rid); 113 error += atse_resource_long(dev, "rx_maddr", &l); 114 error += atse_resource_long(dev, "rx_msize", &l); 115 error += atse_resource_long(dev, "rxc_maddr", &l); 116 error += atse_resource_long(dev, "rxc_msize", &l); 117 error += atse_resource_int(dev, "tx_irq", &rid); 118 error += atse_resource_long(dev, "tx_maddr", &l); 119 error += atse_resource_long(dev, "tx_msize", &l); 120 error += atse_resource_long(dev, "txc_maddr", &l); 121 error += atse_resource_long(dev, "txc_msize", &l); 122 if (error != 0) 123 return (ENXIO); 124 125 rid = 0; 126 res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 127 if (res == NULL) 128 return (ENXIO); 129 bus_release_resource(dev, SYS_RES_MEMORY, rid, res); 130 131 /* Success. */ 132 device_set_desc(dev, "Altera Triple-Speed Ethernet MegaCore"); 133 return (BUS_PROBE_NOWILDCARD); 134} 135 136static int 137atse_attach_nexus(device_t dev) 138{ 139 struct atse_softc *sc; 140 int error; 141 142 sc = device_get_softc(dev); 143 sc->atse_dev = dev; 144 sc->atse_unit = device_get_unit(dev); 145 146 /* Get RX and TX IRQ and FIFO information from hints. */ 147 error = atse_resource_int(dev, "rx_irq", &sc->atse_rx_irq); 148 error += atse_resource_long(dev, "rx_maddr", &sc->atse_rx_maddr); 149 error += atse_resource_long(dev, "rx_msize", &sc->atse_rx_msize); 150 error += atse_resource_long(dev, "rxc_maddr", &sc->atse_rxc_maddr); 151 error += atse_resource_long(dev, "rxc_msize", &sc->atse_rxc_msize); 152 error += atse_resource_int(dev, "tx_irq", &sc->atse_tx_irq); 153 error += atse_resource_long(dev, "tx_maddr", &sc->atse_tx_maddr); 154 error += atse_resource_long(dev, "tx_msize", &sc->atse_tx_msize); 155 error += atse_resource_long(dev, "txc_maddr", &sc->atse_txc_maddr); 156 error += atse_resource_long(dev, "txc_msize", &sc->atse_txc_msize); 157 if (error != 0) 158 return (error); 159 160 /* Avalon-MM, atse management register region. */ 161 sc->atse_mem_rid = 0; 162 sc->atse_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 163 &sc->atse_mem_rid, RF_ACTIVE); 164 if (sc->atse_mem_res == NULL) { 165 device_printf(dev, "failed to map memory for ctrl region\n"); 166 return (ENXIO); 167 } 168 169 /* 170 * (Optional) RX IRQ and memory mapped regions. 171 * 0x00: 2 * 32bit FIFO data, 172 * 0x20: 8 * 32bit FIFO ctrl, Avalon-ST Sink to Avalon-MM R-Slave. 173 */ 174 sc->atse_rx_irq_rid = 0; 175 sc->atse_rx_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, 176 &sc->atse_rx_irq_rid, sc->atse_rx_irq, sc->atse_rx_irq, 1, 177 RF_ACTIVE | RF_SHAREABLE); 178 179 sc->atse_rx_mem_rid = 0; 180 sc->atse_rx_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, 181 &sc->atse_rx_mem_rid, sc->atse_rx_maddr, sc->atse_rx_maddr + 182 sc->atse_rx_msize, sc->atse_rx_msize, RF_ACTIVE); 183 if (sc->atse_rx_mem_res == NULL) { 184 device_printf(dev, "failed to map memory for RX\n"); 185 goto err; 186 } 187 sc->atse_rxc_mem_rid = 0; 188 sc->atse_rxc_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, 189 &sc->atse_rxc_mem_rid, sc->atse_rxc_maddr, sc->atse_rxc_maddr + 190 sc->atse_rxc_msize, sc->atse_rxc_msize, RF_ACTIVE); 191 if (sc->atse_rxc_mem_res == NULL) { 192 device_printf(dev, "failed to map memory for RX control\n"); 193 goto err; 194 } 195 196 /* 197 * (Optional) TX IRQ and memory mapped regions. 198 * 0x00: 2 * 32bit FIFO data, 199 * 0x20: 8 * 32bit FIFO ctrl, Avalon-MM W-Slave to Avalon-ST Source. 200 */ 201 sc->atse_tx_irq_rid = 0; 202 sc->atse_tx_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, 203 &sc->atse_tx_irq_rid, sc->atse_tx_irq, sc->atse_tx_irq, 1, 204 RF_ACTIVE | RF_SHAREABLE); 205 206 sc->atse_tx_mem_rid = 0; 207 sc->atse_tx_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, 208 &sc->atse_tx_mem_rid, sc->atse_tx_maddr, sc->atse_tx_maddr + 209 sc->atse_tx_msize, sc->atse_tx_msize, RF_ACTIVE); 210 if (sc->atse_tx_mem_res == NULL) { 211 device_printf(dev, "failed to map memory for TX\n"); 212 goto err; 213 } 214 sc->atse_txc_mem_rid = 0; 215 sc->atse_txc_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, 216 &sc->atse_txc_mem_rid, sc->atse_txc_maddr, sc->atse_txc_maddr + 217 sc->atse_txc_msize, sc->atse_txc_msize, RF_ACTIVE); 218 if (sc->atse_txc_mem_res == NULL) { 219 device_printf(dev, "failed to map memory for TX control\n"); 220 goto err; 221 } 222 223 error = atse_attach(dev); 224 if (error) 225 goto err; 226 227 return (0); 228 229err: 230 /* Cleanup. */ 231 atse_detach_resources(dev); 232 233 return (error); 234} 235 236static device_method_t atse_methods_nexus[] = { 237 /* Device interface */ 238 DEVMETHOD(device_probe, atse_probe_nexus), 239 DEVMETHOD(device_attach, atse_attach_nexus), 240 DEVMETHOD(device_detach, atse_detach_dev), 241 242 /* MII interface */ 243 DEVMETHOD(miibus_readreg, atse_miibus_readreg), 244 DEVMETHOD(miibus_writereg, atse_miibus_writereg), 245 DEVMETHOD(miibus_statchg, atse_miibus_statchg), 246 247 DEVMETHOD_END 248}; 249 250static driver_t atse_driver_nexus = { 251 "atse", 252 atse_methods_nexus, 253 sizeof(struct atse_softc) 254}; 255 256DRIVER_MODULE(atse, nexus, atse_driver_nexus, atse_devclass, 0, 0); 257DRIVER_MODULE(miibus, atse, miibus_driver, miibus_devclass, 0, 0); 258 259/* end */ 260