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 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #include <sys/bus.h> 37 #include <sys/rman.h> 38 #include <sys/socket.h> 39 #include <sys/taskqueue.h> 40 41 #include <net/ethernet.h> 42 #include <net/if.h> 43 #include <net/if_media.h> 44 45 #include <netinet/in.h> 46 #include <netinet/ip.h> 47 #include <netinet/tcp_lro.h> 48 49 #include <machine/bus.h> 50 #include <machine/resource.h> 51 52 #include <dev/ofw/ofw_bus.h> 53 #include <dev/ofw/ofw_bus_subr.h> 54 55 #include <dev/mii/mii.h> 56 #include <dev/mii/miivar.h> 57 58 #include "if_mvnetareg.h" 59 #include "if_mvnetavar.h" 60 61 #ifdef MVNETA_DEBUG 62 #define STATIC /* nothing */ 63 #else 64 #define STATIC static 65 #endif 66 67 #define PHY_MODE_MAXLEN 10 68 #define INBAND_STATUS_MAXLEN 16 69 70 static int mvneta_fdt_probe(device_t); 71 static int mvneta_fdt_attach(device_t); 72 STATIC boolean_t mvneta_find_ethernet_prop_switch(phandle_t, phandle_t); 73 74 static device_method_t mvneta_fdt_methods[] = { 75 /* Device interface */ 76 DEVMETHOD(device_probe, mvneta_fdt_probe), 77 DEVMETHOD(device_attach, mvneta_fdt_attach), 78 79 /* End */ 80 DEVMETHOD_END 81 }; 82 83 DEFINE_CLASS_1(mvneta, mvneta_fdt_driver, mvneta_fdt_methods, 84 sizeof(struct mvneta_softc), mvneta_driver); 85 86 static devclass_t mvneta_fdt_devclass; 87 88 DRIVER_MODULE(mvneta, ofwbus, mvneta_fdt_driver, mvneta_fdt_devclass, 0, 0); 89 DRIVER_MODULE(mvneta, simplebus, mvneta_fdt_driver, mvneta_fdt_devclass, 0, 0); 90 91 static int mvneta_fdt_phy_acquire(device_t); 92 93 static struct ofw_compat_data compat_data[] = { 94 {"marvell,armada-370-neta", true}, 95 {"marvell,armada-3700-neta", true}, 96 {NULL, false} 97 }; 98 99 SIMPLEBUS_PNP_INFO(compat_data); 100 101 static int 102 mvneta_fdt_probe(device_t dev) 103 { 104 105 if (!ofw_bus_status_okay(dev)) 106 return (ENXIO); 107 108 if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data) 109 return (ENXIO); 110 111 device_set_desc(dev, "NETA controller"); 112 return (BUS_PROBE_DEFAULT); 113 } 114 115 static int 116 mvneta_fdt_attach(device_t dev) 117 { 118 struct mvneta_softc *sc; 119 uint32_t tx_csum_limit; 120 int err; 121 122 sc = device_get_softc(dev); 123 124 /* Try to fetch PHY information from FDT */ 125 err = mvneta_fdt_phy_acquire(dev); 126 if (err != 0) 127 return (err); 128 129 if (ofw_bus_is_compatible(dev, "marvell,armada-370-neta")) { 130 tx_csum_limit = MVNETA_A370_MAX_CSUM_MTU; 131 } else { 132 tx_csum_limit = MVNETA_A3700_MAX_CSUM_MTU; 133 } 134 135 if (ofw_bus_has_prop(dev, "tx-csum-limit")) { 136 err = OF_getencprop(ofw_bus_get_node(dev), "tx-csum-limit", 137 &tx_csum_limit, sizeof(tx_csum_limit)); 138 if (err <= 0) { 139 device_printf(dev, 140 "Failed to acquire tx-csum-limit property\n"); 141 return (ENXIO); 142 } 143 } 144 sc->tx_csum_limit = tx_csum_limit; 145 146 return (mvneta_attach(dev)); 147 } 148 149 static int 150 mvneta_fdt_phy_acquire(device_t dev) 151 { 152 struct mvneta_softc *sc; 153 phandle_t node, child, phy_handle; 154 char phymode[PHY_MODE_MAXLEN]; 155 char managed[INBAND_STATUS_MAXLEN]; 156 char *name; 157 158 sc = device_get_softc(dev); 159 node = ofw_bus_get_node(dev); 160 161 /* PHY mode is crucial */ 162 if (OF_getprop(node, "phy-mode", phymode, sizeof(phymode)) <= 0) { 163 device_printf(dev, "Failed to acquire PHY mode from FDT.\n"); 164 return (ENXIO); 165 } 166 167 if (strncmp(phymode, "rgmii-id", 8) == 0) 168 sc->phy_mode = MVNETA_PHY_RGMII_ID; 169 else if (strncmp(phymode, "rgmii", 5) == 0) 170 sc->phy_mode = MVNETA_PHY_RGMII; 171 else if (strncmp(phymode, "sgmii", 5) == 0) 172 sc->phy_mode = MVNETA_PHY_SGMII; 173 else if (strncmp(phymode, "qsgmii", 6) == 0) 174 sc->phy_mode = MVNETA_PHY_QSGMII; 175 else 176 sc->phy_mode = MVNETA_PHY_SGMII; 177 178 /* Check if in-band link status will be used */ 179 if (OF_getprop(node, "managed", managed, sizeof(managed)) > 0) { 180 if (strncmp(managed, "in-band-status", 14) == 0) { 181 sc->use_inband_status = TRUE; 182 device_printf(dev, "Use in-band link status.\n"); 183 return (0); 184 } 185 } 186 187 if (OF_getencprop(node, "phy", (void *)&phy_handle, 188 sizeof(phy_handle)) <= 0) { 189 /* Test for fixed-link (present i.e. in 388-gp) */ 190 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 191 if (OF_getprop_alloc(child, 192 "name", (void **)&name) <= 0) { 193 continue; 194 } 195 if (strncmp(name, "fixed-link", 10) == 0) { 196 free(name, M_OFWPROP); 197 if (OF_getencprop(child, "speed", 198 &sc->phy_speed, sizeof(sc->phy_speed)) <= 0) { 199 if (bootverbose) { 200 device_printf(dev, 201 "No PHY information.\n"); 202 } 203 return (ENXIO); 204 } 205 if (OF_hasprop(child, "full-duplex")) 206 sc->phy_fdx = TRUE; 207 else 208 sc->phy_fdx = FALSE; 209 210 /* Keep this flag just for the record */ 211 sc->phy_addr = MII_PHY_ANY; 212 213 return (0); 214 } 215 free(name, M_OFWPROP); 216 } 217 if (bootverbose) { 218 device_printf(dev, 219 "Could not find PHY information in FDT.\n"); 220 } 221 return (ENXIO); 222 } else { 223 phy_handle = OF_instance_to_package(phy_handle); 224 if (OF_getencprop(phy_handle, "reg", &sc->phy_addr, 225 sizeof(sc->phy_addr)) <= 0) { 226 device_printf(dev, 227 "Could not find PHY address in FDT.\n"); 228 return (ENXIO); 229 } 230 } 231 232 return (0); 233 } 234 235 int 236 mvneta_fdt_mac_address(struct mvneta_softc *sc, uint8_t *addr) 237 { 238 phandle_t node; 239 uint8_t lmac[ETHER_ADDR_LEN]; 240 uint8_t zeromac[] = {[0 ... (ETHER_ADDR_LEN - 1)] = 0}; 241 int len; 242 243 /* 244 * Retrieve hw address from the device tree. 245 */ 246 node = ofw_bus_get_node(sc->dev); 247 if (node == 0) 248 return (ENXIO); 249 250 len = OF_getprop(node, "local-mac-address", (void *)lmac, sizeof(lmac)); 251 if (len != ETHER_ADDR_LEN) 252 return (ENOENT); 253 254 if (memcmp(lmac, zeromac, ETHER_ADDR_LEN) == 0) { 255 /* Invalid MAC address (all zeros) */ 256 return (EINVAL); 257 } 258 memcpy(addr, lmac, ETHER_ADDR_LEN); 259 260 return (0); 261 } 262 263 STATIC boolean_t 264 mvneta_find_ethernet_prop_switch(phandle_t ethernet, phandle_t node) 265 { 266 boolean_t ret; 267 phandle_t child, switch_eth_handle, switch_eth; 268 269 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 270 if (OF_getencprop(child, "ethernet", (void*)&switch_eth_handle, 271 sizeof(switch_eth_handle)) > 0) { 272 if (switch_eth_handle > 0) { 273 switch_eth = OF_node_from_xref( 274 switch_eth_handle); 275 276 if (switch_eth == ethernet) 277 return (true); 278 } 279 } 280 281 ret = mvneta_find_ethernet_prop_switch(ethernet, child); 282 if (ret != 0) 283 return (ret); 284 } 285 286 return (false); 287 } 288 289 boolean_t 290 mvneta_has_switch_fdt(device_t self) 291 { 292 phandle_t node; 293 294 node = ofw_bus_get_node(self); 295 296 return mvneta_find_ethernet_prop_switch(node, OF_finddevice("/")); 297 } 298