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 #define PHY_MODE_MAXLEN 10 62 #define INBAND_STATUS_MAXLEN 16 63 64 static int mvneta_fdt_probe(device_t); 65 static int mvneta_fdt_attach(device_t); 66 67 static device_method_t mvneta_fdt_methods[] = { 68 /* Device interface */ 69 DEVMETHOD(device_probe, mvneta_fdt_probe), 70 DEVMETHOD(device_attach, mvneta_fdt_attach), 71 72 /* End */ 73 DEVMETHOD_END 74 }; 75 76 DEFINE_CLASS_1(mvneta, mvneta_fdt_driver, mvneta_fdt_methods, 77 sizeof(struct mvneta_softc), mvneta_driver); 78 79 static devclass_t mvneta_fdt_devclass; 80 81 DRIVER_MODULE(mvneta, ofwbus, mvneta_fdt_driver, mvneta_fdt_devclass, 0, 0); 82 DRIVER_MODULE(mvneta, simplebus, mvneta_fdt_driver, mvneta_fdt_devclass, 0, 0); 83 84 static int mvneta_fdt_phy_acquire(device_t); 85 86 static struct ofw_compat_data compat_data[] = { 87 {"marvell,armada-370-neta", true}, 88 {"marvell,armada-3700-neta", true}, 89 {NULL, false} 90 }; 91 92 static int 93 mvneta_fdt_probe(device_t dev) 94 { 95 96 if (!ofw_bus_status_okay(dev)) 97 return (ENXIO); 98 99 if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data) 100 return (ENXIO); 101 102 device_set_desc(dev, "NETA controller"); 103 return (BUS_PROBE_DEFAULT); 104 } 105 106 static int 107 mvneta_fdt_attach(device_t dev) 108 { 109 struct mvneta_softc *sc; 110 uint32_t tx_csum_limit; 111 int err; 112 113 sc = device_get_softc(dev); 114 115 /* Try to fetch PHY information from FDT */ 116 err = mvneta_fdt_phy_acquire(dev); 117 if (err != 0) 118 return (err); 119 120 if (ofw_bus_is_compatible(dev, "marvell,armada-370-neta")) { 121 tx_csum_limit = MVNETA_A370_MAX_CSUM_MTU; 122 } else { 123 tx_csum_limit = MVNETA_A3700_MAX_CSUM_MTU; 124 } 125 126 if (ofw_bus_has_prop(dev, "tx-csum-limit")) { 127 err = OF_getprop(ofw_bus_get_node(dev), "tx-csum-limit", 128 &tx_csum_limit, sizeof(tx_csum_limit)); 129 if (err <= 0) { 130 device_printf(dev, 131 "Failed to acquire tx-csum-limit property\n"); 132 return (ENXIO); 133 } 134 } 135 sc->tx_csum_limit = tx_csum_limit; 136 137 return (mvneta_attach(dev)); 138 } 139 140 static int 141 mvneta_fdt_phy_acquire(device_t dev) 142 { 143 struct mvneta_softc *sc; 144 phandle_t node, child, phy_handle; 145 char phymode[PHY_MODE_MAXLEN]; 146 char managed[INBAND_STATUS_MAXLEN]; 147 char *name; 148 149 sc = device_get_softc(dev); 150 node = ofw_bus_get_node(dev); 151 152 /* PHY mode is crucial */ 153 if (OF_getprop(node, "phy-mode", phymode, sizeof(phymode)) <= 0) { 154 device_printf(dev, "Failed to acquire PHY mode from FDT.\n"); 155 return (ENXIO); 156 } 157 158 if (strncmp(phymode, "rgmii-id", 8) == 0) 159 sc->phy_mode = MVNETA_PHY_RGMII_ID; 160 else if (strncmp(phymode, "rgmii", 5) == 0) 161 sc->phy_mode = MVNETA_PHY_RGMII; 162 else if (strncmp(phymode, "sgmii", 5) == 0) 163 sc->phy_mode = MVNETA_PHY_SGMII; 164 else if (strncmp(phymode, "qsgmii", 6) == 0) 165 sc->phy_mode = MVNETA_PHY_QSGMII; 166 else 167 sc->phy_mode = MVNETA_PHY_SGMII; 168 169 /* Check if in-band link status will be used */ 170 if (OF_getprop(node, "managed", managed, sizeof(managed)) > 0) { 171 if (strncmp(managed, "in-band-status", 14) == 0) { 172 sc->use_inband_status = TRUE; 173 device_printf(dev, "Use in-band link status.\n"); 174 return (0); 175 } 176 } 177 178 if (OF_getencprop(node, "phy", (void *)&phy_handle, 179 sizeof(phy_handle)) <= 0) { 180 /* Test for fixed-link (present i.e. in 388-gp) */ 181 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 182 if (OF_getprop_alloc(child, 183 "name", (void **)&name) <= 0) { 184 continue; 185 } 186 if (strncmp(name, "fixed-link", 10) == 0) { 187 free(name, M_OFWPROP); 188 if (OF_getencprop(child, "speed", 189 &sc->phy_speed, sizeof(sc->phy_speed)) <= 0) { 190 if (bootverbose) { 191 device_printf(dev, 192 "No PHY information.\n"); 193 } 194 return (ENXIO); 195 } 196 if (OF_hasprop(child, "full-duplex")) 197 sc->phy_fdx = TRUE; 198 else 199 sc->phy_fdx = FALSE; 200 201 /* Keep this flag just for the record */ 202 sc->phy_addr = MII_PHY_ANY; 203 204 return (0); 205 } 206 free(name, M_OFWPROP); 207 } 208 if (bootverbose) { 209 device_printf(dev, 210 "Could not find PHY information in FDT.\n"); 211 } 212 return (ENXIO); 213 } else { 214 phy_handle = OF_instance_to_package(phy_handle); 215 if (OF_getencprop(phy_handle, "reg", &sc->phy_addr, 216 sizeof(sc->phy_addr)) <= 0) { 217 device_printf(dev, 218 "Could not find PHY address in FDT.\n"); 219 return (ENXIO); 220 } 221 } 222 223 return (0); 224 } 225 226 int 227 mvneta_fdt_mac_address(struct mvneta_softc *sc, uint8_t *addr) 228 { 229 phandle_t node; 230 uint8_t lmac[ETHER_ADDR_LEN]; 231 uint8_t zeromac[] = {[0 ... (ETHER_ADDR_LEN - 1)] = 0}; 232 int len; 233 234 /* 235 * Retrieve hw address from the device tree. 236 */ 237 node = ofw_bus_get_node(sc->dev); 238 if (node == 0) 239 return (ENXIO); 240 241 len = OF_getprop(node, "local-mac-address", (void *)lmac, sizeof(lmac)); 242 if (len != ETHER_ADDR_LEN) 243 return (ENOENT); 244 245 if (memcmp(lmac, zeromac, ETHER_ADDR_LEN) == 0) { 246 /* Invalid MAC address (all zeros) */ 247 return (EINVAL); 248 } 249 memcpy(addr, lmac, ETHER_ADDR_LEN); 250 251 return (0); 252 } 253