1/* 2 * Copyright (c) 2017 Stormshield. 3 * Copyright (c) 2017 Semihalf. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#include "opt_platform.h" 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/kernel.h> 33#include <sys/module.h> 34#include <sys/bus.h> 35#include <sys/rman.h> 36#include <sys/socket.h> 37#include <sys/taskqueue.h> 38 39#include <net/ethernet.h> 40#include <net/if.h> 41#include <net/if_media.h> 42 43#include <netinet/in.h> 44#include <netinet/ip.h> 45#include <netinet/tcp_lro.h> 46 47#include <machine/bus.h> 48#include <machine/resource.h> 49 50#include <dev/ofw/ofw_bus.h> 51#include <dev/ofw/ofw_bus_subr.h> 52 53#include <dev/mii/mii.h> 54#include <dev/mii/miivar.h> 55 56#include "if_mvnetareg.h" 57#include "if_mvnetavar.h" 58 59#ifdef MVNETA_DEBUG 60#define STATIC /* nothing */ 61#else 62#define STATIC static 63#endif 64 65#define PHY_MODE_MAXLEN 10 66#define INBAND_STATUS_MAXLEN 16 67 68static int mvneta_fdt_probe(device_t); 69static int mvneta_fdt_attach(device_t); 70STATIC boolean_t mvneta_find_ethernet_prop_switch(phandle_t, phandle_t); 71 72static device_method_t mvneta_fdt_methods[] = { 73 /* Device interface */ 74 DEVMETHOD(device_probe, mvneta_fdt_probe), 75 DEVMETHOD(device_attach, mvneta_fdt_attach), 76 77 /* End */ 78 DEVMETHOD_END 79}; 80 81DEFINE_CLASS_1(mvneta, mvneta_fdt_driver, mvneta_fdt_methods, 82 sizeof(struct mvneta_softc), mvneta_driver); 83 84DRIVER_MODULE(mvneta, ofwbus, mvneta_fdt_driver, 0, 0); 85DRIVER_MODULE(mvneta, simplebus, mvneta_fdt_driver, 0, 0); 86 87static int mvneta_fdt_phy_acquire(device_t); 88 89static struct ofw_compat_data compat_data[] = { 90 {"marvell,armada-370-neta", true}, 91 {"marvell,armada-3700-neta", true}, 92 {NULL, false} 93}; 94 95SIMPLEBUS_PNP_INFO(compat_data); 96 97static int 98mvneta_fdt_probe(device_t dev) 99{ 100 101 if (!ofw_bus_status_okay(dev)) 102 return (ENXIO); 103 104 if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data) 105 return (ENXIO); 106 107 device_set_desc(dev, "NETA controller"); 108 return (BUS_PROBE_DEFAULT); 109} 110 111static int 112mvneta_fdt_attach(device_t dev) 113{ 114 struct mvneta_softc *sc; 115 uint32_t tx_csum_limit; 116 int err; 117 118 sc = device_get_softc(dev); 119 120 /* Try to fetch PHY information from FDT */ 121 err = mvneta_fdt_phy_acquire(dev); 122 if (err != 0) 123 return (err); 124 125 if (ofw_bus_is_compatible(dev, "marvell,armada-370-neta")) { 126 tx_csum_limit = MVNETA_A370_MAX_CSUM_MTU; 127 } else { 128 tx_csum_limit = MVNETA_A3700_MAX_CSUM_MTU; 129 } 130 131 if (ofw_bus_has_prop(dev, "tx-csum-limit")) { 132 err = OF_getencprop(ofw_bus_get_node(dev), "tx-csum-limit", 133 &tx_csum_limit, sizeof(tx_csum_limit)); 134 if (err <= 0) { 135 device_printf(dev, 136 "Failed to acquire tx-csum-limit property\n"); 137 return (ENXIO); 138 } 139 } 140 sc->tx_csum_limit = tx_csum_limit; 141 142 return (mvneta_attach(dev)); 143} 144 145static int 146mvneta_fdt_phy_acquire(device_t dev) 147{ 148 struct mvneta_softc *sc; 149 phandle_t node, child, phy_handle; 150 char phymode[PHY_MODE_MAXLEN]; 151 char managed[INBAND_STATUS_MAXLEN]; 152 char *name; 153 154 sc = device_get_softc(dev); 155 node = ofw_bus_get_node(dev); 156 157 /* PHY mode is crucial */ 158 if (OF_getprop(node, "phy-mode", phymode, sizeof(phymode)) <= 0) { 159 device_printf(dev, "Failed to acquire PHY mode from FDT.\n"); 160 return (ENXIO); 161 } 162 163 if (strncmp(phymode, "rgmii-id", 8) == 0) 164 sc->phy_mode = MVNETA_PHY_RGMII_ID; 165 else if (strncmp(phymode, "rgmii", 5) == 0) 166 sc->phy_mode = MVNETA_PHY_RGMII; 167 else if (strncmp(phymode, "sgmii", 5) == 0) 168 sc->phy_mode = MVNETA_PHY_SGMII; 169 else if (strncmp(phymode, "qsgmii", 6) == 0) 170 sc->phy_mode = MVNETA_PHY_QSGMII; 171 else 172 sc->phy_mode = MVNETA_PHY_SGMII; 173 174 /* Check if in-band link status will be used */ 175 if (OF_getprop(node, "managed", managed, sizeof(managed)) > 0) { 176 if (strncmp(managed, "in-band-status", 14) == 0) { 177 sc->use_inband_status = TRUE; 178 device_printf(dev, "Use in-band link status.\n"); 179 return (0); 180 } 181 } 182 183 if (OF_getencprop(node, "phy", (void *)&phy_handle, 184 sizeof(phy_handle)) <= 0) { 185 /* Test for fixed-link (present i.e. in 388-gp) */ 186 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 187 if (OF_getprop_alloc(child, 188 "name", (void **)&name) <= 0) { 189 continue; 190 } 191 if (strncmp(name, "fixed-link", 10) == 0) { 192 free(name, M_OFWPROP); 193 if (OF_getencprop(child, "speed", 194 &sc->phy_speed, sizeof(sc->phy_speed)) <= 0) { 195 if (bootverbose) { 196 device_printf(dev, 197 "No PHY information.\n"); 198 } 199 return (ENXIO); 200 } 201 if (OF_hasprop(child, "full-duplex")) 202 sc->phy_fdx = TRUE; 203 else 204 sc->phy_fdx = FALSE; 205 206 /* Keep this flag just for the record */ 207 sc->phy_addr = MII_PHY_ANY; 208 209 return (0); 210 } 211 free(name, M_OFWPROP); 212 } 213 if (bootverbose) { 214 device_printf(dev, 215 "Could not find PHY information in FDT.\n"); 216 } 217 return (ENXIO); 218 } else { 219 phy_handle = OF_instance_to_package(phy_handle); 220 if (OF_getencprop(phy_handle, "reg", &sc->phy_addr, 221 sizeof(sc->phy_addr)) <= 0) { 222 device_printf(dev, 223 "Could not find PHY address in FDT.\n"); 224 return (ENXIO); 225 } 226 } 227 228 return (0); 229} 230 231int 232mvneta_fdt_mac_address(struct mvneta_softc *sc, uint8_t *addr) 233{ 234 phandle_t node; 235 uint8_t lmac[ETHER_ADDR_LEN]; 236 uint8_t zeromac[] = {[0 ... (ETHER_ADDR_LEN - 1)] = 0}; 237 int len; 238 239 /* 240 * Retrieve hw address from the device tree. 241 */ 242 node = ofw_bus_get_node(sc->dev); 243 if (node == 0) 244 return (ENXIO); 245 246 len = OF_getprop(node, "local-mac-address", (void *)lmac, sizeof(lmac)); 247 if (len != ETHER_ADDR_LEN) 248 return (ENOENT); 249 250 if (memcmp(lmac, zeromac, ETHER_ADDR_LEN) == 0) { 251 /* Invalid MAC address (all zeros) */ 252 return (EINVAL); 253 } 254 memcpy(addr, lmac, ETHER_ADDR_LEN); 255 256 return (0); 257} 258 259STATIC boolean_t 260mvneta_find_ethernet_prop_switch(phandle_t ethernet, phandle_t node) 261{ 262 boolean_t ret; 263 phandle_t child, switch_eth_handle, switch_eth; 264 265 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 266 if (OF_getencprop(child, "ethernet", (void*)&switch_eth_handle, 267 sizeof(switch_eth_handle)) > 0) { 268 if (switch_eth_handle > 0) { 269 switch_eth = OF_node_from_xref( 270 switch_eth_handle); 271 272 if (switch_eth == ethernet) 273 return (true); 274 } 275 } 276 277 ret = mvneta_find_ethernet_prop_switch(ethernet, child); 278 if (ret != 0) 279 return (ret); 280 } 281 282 return (false); 283} 284 285boolean_t 286mvneta_has_switch_fdt(device_t self) 287{ 288 phandle_t node; 289 290 node = ofw_bus_get_node(self); 291 292 return mvneta_find_ethernet_prop_switch(node, OF_finddevice("/")); 293} 294