1 /*- 2 * Copyright (c) 2015 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Semihalf under 6 * the sponsorship of the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/bitset.h> 36 #include <sys/bitstring.h> 37 #include <sys/bus.h> 38 #include <sys/endian.h> 39 #include <sys/kernel.h> 40 #include <sys/malloc.h> 41 #include <sys/module.h> 42 #include <sys/rman.h> 43 #include <sys/pciio.h> 44 #include <sys/pcpu.h> 45 #include <sys/proc.h> 46 #include <sys/socket.h> 47 #include <sys/cpuset.h> 48 #include <sys/lock.h> 49 #include <sys/mutex.h> 50 51 #include <net/ethernet.h> 52 #include <net/if.h> 53 #include <net/if_media.h> 54 55 #include <dev/ofw/openfirm.h> 56 #include <dev/mii/miivar.h> 57 58 #include "thunder_bgx.h" 59 #include "thunder_bgx_var.h" 60 61 #define CONN_TYPE_MAXLEN 16 62 #define CONN_TYPE_OFFSET 2 63 64 int bgx_fdt_init_phy(struct bgx *); 65 66 static void 67 bgx_fdt_get_macaddr(phandle_t phy, uint8_t *hwaddr) 68 { 69 uint8_t addr[ETHER_ADDR_LEN]; 70 71 if (OF_getprop(phy, "local-mac-address", addr, ETHER_ADDR_LEN) == -1) { 72 /* Missing MAC address should be marked by clearing it */ 73 memset(hwaddr, 0, ETHER_ADDR_LEN); 74 } else 75 memcpy(hwaddr, addr, ETHER_ADDR_LEN); 76 } 77 78 static boolean_t 79 bgx_fdt_phy_mode_match(struct bgx *bgx, char *qlm_mode, size_t size) 80 { 81 82 size -= CONN_TYPE_OFFSET; 83 84 switch (bgx->qlm_mode) { 85 case QLM_MODE_SGMII: 86 if (strncmp(&qlm_mode[CONN_TYPE_OFFSET], "sgmii", size) == 0) 87 return (TRUE); 88 break; 89 case QLM_MODE_XAUI_1X4: 90 if (strncmp(&qlm_mode[CONN_TYPE_OFFSET], "xaui", size) == 0) 91 return (TRUE); 92 if (strncmp(&qlm_mode[CONN_TYPE_OFFSET], "dxaui", size) == 0) 93 return (TRUE); 94 break; 95 case QLM_MODE_RXAUI_2X2: 96 if (strncmp(&qlm_mode[CONN_TYPE_OFFSET], "raui", size) == 0) 97 return (TRUE); 98 break; 99 case QLM_MODE_XFI_4X1: 100 if (strncmp(&qlm_mode[CONN_TYPE_OFFSET], "xfi", size) == 0) 101 return (TRUE); 102 break; 103 case QLM_MODE_XLAUI_1X4: 104 if (strncmp(&qlm_mode[CONN_TYPE_OFFSET], "xlaui", size) == 0) 105 return (TRUE); 106 break; 107 case QLM_MODE_10G_KR_4X1: 108 if (strncmp(&qlm_mode[CONN_TYPE_OFFSET], "xfi-10g-kr", size) == 0) 109 return (TRUE); 110 break; 111 case QLM_MODE_40G_KR4_1X4: 112 if (strncmp(&qlm_mode[CONN_TYPE_OFFSET], "xlaui-40g-kr", size) == 0) 113 return (TRUE); 114 break; 115 default: 116 return (FALSE); 117 } 118 119 return (FALSE); 120 } 121 122 int 123 bgx_fdt_init_phy(struct bgx *bgx) 124 { 125 phandle_t node, child; 126 phandle_t phy, mdio; 127 uint8_t lmac; 128 char bgx_sel[6]; 129 char qlm_mode[CONN_TYPE_MAXLEN]; 130 const char *mac; 131 132 (void)mac; 133 134 lmac = 0; 135 /* Get BGX node from DT */ 136 snprintf(bgx_sel, 6, "/bgx%d", bgx->bgx_id); 137 node = OF_finddevice(bgx_sel); 138 if (node == 0 || node == -1) { 139 device_printf(bgx->dev, 140 "Could not find %s node in FDT\n", bgx_sel); 141 return (ENXIO); 142 } 143 144 for (child = OF_child(node); child > 0; child = OF_peer(child)) { 145 if (OF_getprop(child, "qlm-mode", qlm_mode, 146 sizeof(qlm_mode)) <= 0) { 147 /* Missing qlm-mode, skipping */ 148 continue; 149 } 150 151 if (!bgx_fdt_phy_mode_match(bgx, qlm_mode, sizeof(qlm_mode))) { 152 /* 153 * Connection type not match with BGX mode. 154 */ 155 continue; 156 } 157 158 if (OF_getencprop(child, "phy-handle", &phy, 159 sizeof(phy)) <= 0) { 160 if (bootverbose) { 161 device_printf(bgx->dev, 162 "No phy-handle in PHY node. Skipping...\n"); 163 } 164 continue; 165 } 166 167 /* Acquire PHY address */ 168 phy = OF_node_from_xref(phy); 169 if (OF_getencprop(phy, "reg", &bgx->lmac[lmac].phyaddr, 170 sizeof(bgx->lmac[lmac].phyaddr)) <= 0) { 171 if (bootverbose) { 172 device_printf(bgx->dev, 173 "Could not retrieve PHY address\n"); 174 } 175 bgx->lmac[lmac].phyaddr = MII_PHY_ANY; 176 } 177 178 /* 179 * Get PHY interface (MDIO bus) device. 180 * Driver must be already attached. 181 */ 182 mdio = OF_parent(phy); 183 bgx->lmac[lmac].phy_if_dev = 184 OF_device_from_xref(OF_xref_from_node(mdio)); 185 if (bgx->lmac[lmac].phy_if_dev == NULL) { 186 if (bootverbose) { 187 device_printf(bgx->dev, 188 "Could not find interface to PHY\n"); 189 } 190 continue; 191 } 192 193 /* Get mac address from FDT */ 194 bgx_fdt_get_macaddr(phy, bgx->lmac[lmac].mac); 195 196 bgx->lmac[lmac].lmacid = lmac; 197 lmac++; 198 if (lmac == MAX_LMAC_PER_BGX) 199 break; 200 } 201 if (lmac == 0) { 202 device_printf(bgx->dev, "Could not find matching PHY\n"); 203 return (ENXIO); 204 } 205 206 return (0); 207 } 208