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 DRIVER_MODULE(mvneta, ofwbus, mvneta_fdt_driver, 0, 0); 87 DRIVER_MODULE(mvneta, simplebus, mvneta_fdt_driver, 0, 0); 88 89 static int mvneta_fdt_phy_acquire(device_t); 90 91 static struct ofw_compat_data compat_data[] = { 92 {"marvell,armada-370-neta", true}, 93 {"marvell,armada-3700-neta", true}, 94 {NULL, false} 95 }; 96 97 SIMPLEBUS_PNP_INFO(compat_data); 98 99 static int 100 mvneta_fdt_probe(device_t dev) 101 { 102 103 if (!ofw_bus_status_okay(dev)) 104 return (ENXIO); 105 106 if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data) 107 return (ENXIO); 108 109 device_set_desc(dev, "NETA controller"); 110 return (BUS_PROBE_DEFAULT); 111 } 112 113 static int 114 mvneta_fdt_attach(device_t dev) 115 { 116 struct mvneta_softc *sc; 117 uint32_t tx_csum_limit; 118 int err; 119 120 sc = device_get_softc(dev); 121 122 /* Try to fetch PHY information from FDT */ 123 err = mvneta_fdt_phy_acquire(dev); 124 if (err != 0) 125 return (err); 126 127 if (ofw_bus_is_compatible(dev, "marvell,armada-370-neta")) { 128 tx_csum_limit = MVNETA_A370_MAX_CSUM_MTU; 129 } else { 130 tx_csum_limit = MVNETA_A3700_MAX_CSUM_MTU; 131 } 132 133 if (ofw_bus_has_prop(dev, "tx-csum-limit")) { 134 err = OF_getencprop(ofw_bus_get_node(dev), "tx-csum-limit", 135 &tx_csum_limit, sizeof(tx_csum_limit)); 136 if (err <= 0) { 137 device_printf(dev, 138 "Failed to acquire tx-csum-limit property\n"); 139 return (ENXIO); 140 } 141 } 142 sc->tx_csum_limit = tx_csum_limit; 143 144 return (mvneta_attach(dev)); 145 } 146 147 static int 148 mvneta_fdt_phy_acquire(device_t dev) 149 { 150 struct mvneta_softc *sc; 151 phandle_t node, child, phy_handle; 152 char phymode[PHY_MODE_MAXLEN]; 153 char managed[INBAND_STATUS_MAXLEN]; 154 char *name; 155 156 sc = device_get_softc(dev); 157 node = ofw_bus_get_node(dev); 158 159 /* PHY mode is crucial */ 160 if (OF_getprop(node, "phy-mode", phymode, sizeof(phymode)) <= 0) { 161 device_printf(dev, "Failed to acquire PHY mode from FDT.\n"); 162 return (ENXIO); 163 } 164 165 if (strncmp(phymode, "rgmii-id", 8) == 0) 166 sc->phy_mode = MVNETA_PHY_RGMII_ID; 167 else if (strncmp(phymode, "rgmii", 5) == 0) 168 sc->phy_mode = MVNETA_PHY_RGMII; 169 else if (strncmp(phymode, "sgmii", 5) == 0) 170 sc->phy_mode = MVNETA_PHY_SGMII; 171 else if (strncmp(phymode, "qsgmii", 6) == 0) 172 sc->phy_mode = MVNETA_PHY_QSGMII; 173 else 174 sc->phy_mode = MVNETA_PHY_SGMII; 175 176 /* Check if in-band link status will be used */ 177 if (OF_getprop(node, "managed", managed, sizeof(managed)) > 0) { 178 if (strncmp(managed, "in-band-status", 14) == 0) { 179 sc->use_inband_status = TRUE; 180 device_printf(dev, "Use in-band link status.\n"); 181 return (0); 182 } 183 } 184 185 if (OF_getencprop(node, "phy", (void *)&phy_handle, 186 sizeof(phy_handle)) <= 0) { 187 /* Test for fixed-link (present i.e. in 388-gp) */ 188 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 189 if (OF_getprop_alloc(child, 190 "name", (void **)&name) <= 0) { 191 continue; 192 } 193 if (strncmp(name, "fixed-link", 10) == 0) { 194 free(name, M_OFWPROP); 195 if (OF_getencprop(child, "speed", 196 &sc->phy_speed, sizeof(sc->phy_speed)) <= 0) { 197 if (bootverbose) { 198 device_printf(dev, 199 "No PHY information.\n"); 200 } 201 return (ENXIO); 202 } 203 if (OF_hasprop(child, "full-duplex")) 204 sc->phy_fdx = TRUE; 205 else 206 sc->phy_fdx = FALSE; 207 208 /* Keep this flag just for the record */ 209 sc->phy_addr = MII_PHY_ANY; 210 211 return (0); 212 } 213 free(name, M_OFWPROP); 214 } 215 if (bootverbose) { 216 device_printf(dev, 217 "Could not find PHY information in FDT.\n"); 218 } 219 return (ENXIO); 220 } else { 221 phy_handle = OF_instance_to_package(phy_handle); 222 if (OF_getencprop(phy_handle, "reg", &sc->phy_addr, 223 sizeof(sc->phy_addr)) <= 0) { 224 device_printf(dev, 225 "Could not find PHY address in FDT.\n"); 226 return (ENXIO); 227 } 228 } 229 230 return (0); 231 } 232 233 int 234 mvneta_fdt_mac_address(struct mvneta_softc *sc, uint8_t *addr) 235 { 236 phandle_t node; 237 uint8_t lmac[ETHER_ADDR_LEN]; 238 uint8_t zeromac[] = {[0 ... (ETHER_ADDR_LEN - 1)] = 0}; 239 int len; 240 241 /* 242 * Retrieve hw address from the device tree. 243 */ 244 node = ofw_bus_get_node(sc->dev); 245 if (node == 0) 246 return (ENXIO); 247 248 len = OF_getprop(node, "local-mac-address", (void *)lmac, sizeof(lmac)); 249 if (len != ETHER_ADDR_LEN) 250 return (ENOENT); 251 252 if (memcmp(lmac, zeromac, ETHER_ADDR_LEN) == 0) { 253 /* Invalid MAC address (all zeros) */ 254 return (EINVAL); 255 } 256 memcpy(addr, lmac, ETHER_ADDR_LEN); 257 258 return (0); 259 } 260 261 STATIC boolean_t 262 mvneta_find_ethernet_prop_switch(phandle_t ethernet, phandle_t node) 263 { 264 boolean_t ret; 265 phandle_t child, switch_eth_handle, switch_eth; 266 267 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 268 if (OF_getencprop(child, "ethernet", (void*)&switch_eth_handle, 269 sizeof(switch_eth_handle)) > 0) { 270 if (switch_eth_handle > 0) { 271 switch_eth = OF_node_from_xref( 272 switch_eth_handle); 273 274 if (switch_eth == ethernet) 275 return (true); 276 } 277 } 278 279 ret = mvneta_find_ethernet_prop_switch(ethernet, child); 280 if (ret != 0) 281 return (ret); 282 } 283 284 return (false); 285 } 286 287 boolean_t 288 mvneta_has_switch_fdt(device_t self) 289 { 290 phandle_t node; 291 292 node = ofw_bus_get_node(self); 293 294 return mvneta_find_ethernet_prop_switch(node, OF_finddevice("/")); 295 } 296