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 int 87 mvneta_fdt_probe(device_t dev) 88 { 89 90 if (!ofw_bus_status_okay(dev)) 91 return (ENXIO); 92 93 if (!ofw_bus_is_compatible(dev, "marvell,armada-370-neta")) 94 return (ENXIO); 95 96 device_set_desc(dev, "NETA controller"); 97 return (BUS_PROBE_DEFAULT); 98 } 99 100 static int 101 mvneta_fdt_attach(device_t dev) 102 { 103 int err; 104 105 /* Try to fetch PHY information from FDT */ 106 err = mvneta_fdt_phy_acquire(dev); 107 if (err != 0) 108 return (err); 109 110 return (mvneta_attach(dev)); 111 } 112 113 static int 114 mvneta_fdt_phy_acquire(device_t dev) 115 { 116 struct mvneta_softc *sc; 117 phandle_t node, child, phy_handle; 118 char phymode[PHY_MODE_MAXLEN]; 119 char managed[INBAND_STATUS_MAXLEN]; 120 char *name; 121 122 sc = device_get_softc(dev); 123 node = ofw_bus_get_node(dev); 124 125 /* PHY mode is crucial */ 126 if (OF_getprop(node, "phy-mode", phymode, sizeof(phymode)) <= 0) { 127 device_printf(dev, "Failed to acquire PHY mode from FDT.\n"); 128 return (ENXIO); 129 } 130 131 if (strncmp(phymode, "rgmii-id", 8) == 0) 132 sc->phy_mode = MVNETA_PHY_RGMII_ID; 133 else if (strncmp(phymode, "rgmii", 5) == 0) 134 sc->phy_mode = MVNETA_PHY_RGMII; 135 else if (strncmp(phymode, "sgmii", 5) == 0) 136 sc->phy_mode = MVNETA_PHY_SGMII; 137 else if (strncmp(phymode, "qsgmii", 6) == 0) 138 sc->phy_mode = MVNETA_PHY_QSGMII; 139 else 140 sc->phy_mode = MVNETA_PHY_SGMII; 141 142 /* Check if in-band link status will be used */ 143 if (OF_getprop(node, "managed", managed, sizeof(managed)) > 0) { 144 if (strncmp(managed, "in-band-status", 14) == 0) { 145 sc->use_inband_status = TRUE; 146 device_printf(dev, "Use in-band link status.\n"); 147 return (0); 148 } 149 } 150 151 if (OF_getencprop(node, "phy", (void *)&phy_handle, 152 sizeof(phy_handle)) <= 0) { 153 /* Test for fixed-link (present i.e. in 388-gp) */ 154 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 155 if (OF_getprop_alloc(child, 156 "name", 1, (void **)&name) <= 0) { 157 continue; 158 } 159 if (strncmp(name, "fixed-link", 10) == 0) { 160 free(name, M_OFWPROP); 161 if (OF_getencprop(child, "speed", 162 &sc->phy_speed, sizeof(sc->phy_speed)) <= 0) { 163 if (bootverbose) { 164 device_printf(dev, 165 "No PHY information.\n"); 166 } 167 return (ENXIO); 168 } 169 if (OF_hasprop(child, "full-duplex")) 170 sc->phy_fdx = TRUE; 171 else 172 sc->phy_fdx = FALSE; 173 174 /* Keep this flag just for the record */ 175 sc->phy_addr = MII_PHY_ANY; 176 177 return (0); 178 } 179 free(name, M_OFWPROP); 180 } 181 if (bootverbose) { 182 device_printf(dev, 183 "Could not find PHY information in FDT.\n"); 184 } 185 return (ENXIO); 186 } else { 187 phy_handle = OF_instance_to_package(phy_handle); 188 if (OF_getencprop(phy_handle, "reg", &sc->phy_addr, 189 sizeof(sc->phy_addr)) <= 0) { 190 device_printf(dev, 191 "Could not find PHY address in FDT.\n"); 192 return (ENXIO); 193 } 194 } 195 196 return (0); 197 } 198 199 int 200 mvneta_fdt_mac_address(struct mvneta_softc *sc, uint8_t *addr) 201 { 202 phandle_t node; 203 uint8_t lmac[ETHER_ADDR_LEN]; 204 uint8_t zeromac[] = {[0 ... (ETHER_ADDR_LEN - 1)] = 0}; 205 int len; 206 207 /* 208 * Retrieve hw address from the device tree. 209 */ 210 node = ofw_bus_get_node(sc->dev); 211 if (node == 0) 212 return (ENXIO); 213 214 len = OF_getprop(node, "local-mac-address", (void *)lmac, sizeof(lmac)); 215 if (len != ETHER_ADDR_LEN) 216 return (ENOENT); 217 218 if (memcmp(lmac, zeromac, ETHER_ADDR_LEN) == 0) { 219 /* Invalid MAC address (all zeros) */ 220 return (EINVAL); 221 } 222 memcpy(addr, lmac, ETHER_ADDR_LEN); 223 224 return (0); 225 } 226