1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * FUJITSU Extended Socket Network Device driver 4 * Copyright (c) 2015 FUJITSU LIMITED 5 */ 6 7 /* ethtool support for fjes */ 8 9 #include <linux/vmalloc.h> 10 #include <linux/netdevice.h> 11 #include <linux/ethtool.h> 12 #include <linux/platform_device.h> 13 14 #include "fjes.h" 15 16 struct fjes_stats { 17 char stat_string[ETH_GSTRING_LEN]; 18 int sizeof_stat; 19 int stat_offset; 20 }; 21 22 #define FJES_STAT(name, stat) { \ 23 .stat_string = name, \ 24 .sizeof_stat = FIELD_SIZEOF(struct fjes_adapter, stat), \ 25 .stat_offset = offsetof(struct fjes_adapter, stat) \ 26 } 27 28 static const struct fjes_stats fjes_gstrings_stats[] = { 29 FJES_STAT("rx_packets", stats64.rx_packets), 30 FJES_STAT("tx_packets", stats64.tx_packets), 31 FJES_STAT("rx_bytes", stats64.rx_bytes), 32 FJES_STAT("tx_bytes", stats64.rx_bytes), 33 FJES_STAT("rx_dropped", stats64.rx_dropped), 34 FJES_STAT("tx_dropped", stats64.tx_dropped), 35 }; 36 37 #define FJES_EP_STATS_LEN 14 38 #define FJES_STATS_LEN \ 39 (ARRAY_SIZE(fjes_gstrings_stats) + \ 40 ((&((struct fjes_adapter *)netdev_priv(netdev))->hw)->max_epid - 1) * \ 41 FJES_EP_STATS_LEN) 42 43 static void fjes_get_ethtool_stats(struct net_device *netdev, 44 struct ethtool_stats *stats, u64 *data) 45 { 46 struct fjes_adapter *adapter = netdev_priv(netdev); 47 struct fjes_hw *hw = &adapter->hw; 48 int epidx; 49 char *p; 50 int i; 51 52 for (i = 0; i < ARRAY_SIZE(fjes_gstrings_stats); i++) { 53 p = (char *)adapter + fjes_gstrings_stats[i].stat_offset; 54 data[i] = (fjes_gstrings_stats[i].sizeof_stat == sizeof(u64)) 55 ? *(u64 *)p : *(u32 *)p; 56 } 57 for (epidx = 0; epidx < hw->max_epid; epidx++) { 58 if (epidx == hw->my_epid) 59 continue; 60 data[i++] = hw->ep_shm_info[epidx].ep_stats 61 .com_regist_buf_exec; 62 data[i++] = hw->ep_shm_info[epidx].ep_stats 63 .com_unregist_buf_exec; 64 data[i++] = hw->ep_shm_info[epidx].ep_stats.send_intr_rx; 65 data[i++] = hw->ep_shm_info[epidx].ep_stats.send_intr_unshare; 66 data[i++] = hw->ep_shm_info[epidx].ep_stats 67 .send_intr_zoneupdate; 68 data[i++] = hw->ep_shm_info[epidx].ep_stats.recv_intr_rx; 69 data[i++] = hw->ep_shm_info[epidx].ep_stats.recv_intr_unshare; 70 data[i++] = hw->ep_shm_info[epidx].ep_stats.recv_intr_stop; 71 data[i++] = hw->ep_shm_info[epidx].ep_stats 72 .recv_intr_zoneupdate; 73 data[i++] = hw->ep_shm_info[epidx].ep_stats.tx_buffer_full; 74 data[i++] = hw->ep_shm_info[epidx].ep_stats 75 .tx_dropped_not_shared; 76 data[i++] = hw->ep_shm_info[epidx].ep_stats 77 .tx_dropped_ver_mismatch; 78 data[i++] = hw->ep_shm_info[epidx].ep_stats 79 .tx_dropped_buf_size_mismatch; 80 data[i++] = hw->ep_shm_info[epidx].ep_stats 81 .tx_dropped_vlanid_mismatch; 82 } 83 } 84 85 static void fjes_get_strings(struct net_device *netdev, 86 u32 stringset, u8 *data) 87 { 88 struct fjes_adapter *adapter = netdev_priv(netdev); 89 struct fjes_hw *hw = &adapter->hw; 90 u8 *p = data; 91 int i; 92 93 switch (stringset) { 94 case ETH_SS_STATS: 95 for (i = 0; i < ARRAY_SIZE(fjes_gstrings_stats); i++) { 96 memcpy(p, fjes_gstrings_stats[i].stat_string, 97 ETH_GSTRING_LEN); 98 p += ETH_GSTRING_LEN; 99 } 100 for (i = 0; i < hw->max_epid; i++) { 101 if (i == hw->my_epid) 102 continue; 103 sprintf(p, "ep%u_com_regist_buf_exec", i); 104 p += ETH_GSTRING_LEN; 105 sprintf(p, "ep%u_com_unregist_buf_exec", i); 106 p += ETH_GSTRING_LEN; 107 sprintf(p, "ep%u_send_intr_rx", i); 108 p += ETH_GSTRING_LEN; 109 sprintf(p, "ep%u_send_intr_unshare", i); 110 p += ETH_GSTRING_LEN; 111 sprintf(p, "ep%u_send_intr_zoneupdate", i); 112 p += ETH_GSTRING_LEN; 113 sprintf(p, "ep%u_recv_intr_rx", i); 114 p += ETH_GSTRING_LEN; 115 sprintf(p, "ep%u_recv_intr_unshare", i); 116 p += ETH_GSTRING_LEN; 117 sprintf(p, "ep%u_recv_intr_stop", i); 118 p += ETH_GSTRING_LEN; 119 sprintf(p, "ep%u_recv_intr_zoneupdate", i); 120 p += ETH_GSTRING_LEN; 121 sprintf(p, "ep%u_tx_buffer_full", i); 122 p += ETH_GSTRING_LEN; 123 sprintf(p, "ep%u_tx_dropped_not_shared", i); 124 p += ETH_GSTRING_LEN; 125 sprintf(p, "ep%u_tx_dropped_ver_mismatch", i); 126 p += ETH_GSTRING_LEN; 127 sprintf(p, "ep%u_tx_dropped_buf_size_mismatch", i); 128 p += ETH_GSTRING_LEN; 129 sprintf(p, "ep%u_tx_dropped_vlanid_mismatch", i); 130 p += ETH_GSTRING_LEN; 131 } 132 break; 133 } 134 } 135 136 static int fjes_get_sset_count(struct net_device *netdev, int sset) 137 { 138 switch (sset) { 139 case ETH_SS_STATS: 140 return FJES_STATS_LEN; 141 default: 142 return -EOPNOTSUPP; 143 } 144 } 145 146 static void fjes_get_drvinfo(struct net_device *netdev, 147 struct ethtool_drvinfo *drvinfo) 148 { 149 struct fjes_adapter *adapter = netdev_priv(netdev); 150 struct platform_device *plat_dev; 151 152 plat_dev = adapter->plat_dev; 153 154 strlcpy(drvinfo->driver, fjes_driver_name, sizeof(drvinfo->driver)); 155 strlcpy(drvinfo->version, fjes_driver_version, 156 sizeof(drvinfo->version)); 157 158 strlcpy(drvinfo->fw_version, "none", sizeof(drvinfo->fw_version)); 159 snprintf(drvinfo->bus_info, sizeof(drvinfo->bus_info), 160 "platform:%s", plat_dev->name); 161 } 162 163 static int fjes_get_link_ksettings(struct net_device *netdev, 164 struct ethtool_link_ksettings *ecmd) 165 { 166 ethtool_link_ksettings_zero_link_mode(ecmd, supported); 167 ethtool_link_ksettings_zero_link_mode(ecmd, advertising); 168 ecmd->base.duplex = DUPLEX_FULL; 169 ecmd->base.autoneg = AUTONEG_DISABLE; 170 ecmd->base.port = PORT_NONE; 171 ecmd->base.speed = 20000; /* 20Gb/s */ 172 173 return 0; 174 } 175 176 static int fjes_get_regs_len(struct net_device *netdev) 177 { 178 #define FJES_REGS_LEN 37 179 return FJES_REGS_LEN * sizeof(u32); 180 } 181 182 static void fjes_get_regs(struct net_device *netdev, 183 struct ethtool_regs *regs, void *p) 184 { 185 struct fjes_adapter *adapter = netdev_priv(netdev); 186 struct fjes_hw *hw = &adapter->hw; 187 u32 *regs_buff = p; 188 189 memset(p, 0, FJES_REGS_LEN * sizeof(u32)); 190 191 regs->version = 1; 192 193 /* Information registers */ 194 regs_buff[0] = rd32(XSCT_OWNER_EPID); 195 regs_buff[1] = rd32(XSCT_MAX_EP); 196 197 /* Device Control registers */ 198 regs_buff[4] = rd32(XSCT_DCTL); 199 200 /* Command Control registers */ 201 regs_buff[8] = rd32(XSCT_CR); 202 regs_buff[9] = rd32(XSCT_CS); 203 regs_buff[10] = rd32(XSCT_SHSTSAL); 204 regs_buff[11] = rd32(XSCT_SHSTSAH); 205 206 regs_buff[13] = rd32(XSCT_REQBL); 207 regs_buff[14] = rd32(XSCT_REQBAL); 208 regs_buff[15] = rd32(XSCT_REQBAH); 209 210 regs_buff[17] = rd32(XSCT_RESPBL); 211 regs_buff[18] = rd32(XSCT_RESPBAL); 212 regs_buff[19] = rd32(XSCT_RESPBAH); 213 214 /* Interrupt Control registers */ 215 regs_buff[32] = rd32(XSCT_IS); 216 regs_buff[33] = rd32(XSCT_IMS); 217 regs_buff[34] = rd32(XSCT_IMC); 218 regs_buff[35] = rd32(XSCT_IG); 219 regs_buff[36] = rd32(XSCT_ICTL); 220 } 221 222 static int fjes_set_dump(struct net_device *netdev, struct ethtool_dump *dump) 223 { 224 struct fjes_adapter *adapter = netdev_priv(netdev); 225 struct fjes_hw *hw = &adapter->hw; 226 int ret = 0; 227 228 if (dump->flag) { 229 if (hw->debug_mode) 230 return -EPERM; 231 232 hw->debug_mode = dump->flag; 233 234 /* enable debug mode */ 235 mutex_lock(&hw->hw_info.lock); 236 ret = fjes_hw_start_debug(hw); 237 mutex_unlock(&hw->hw_info.lock); 238 239 if (ret) 240 hw->debug_mode = 0; 241 } else { 242 if (!hw->debug_mode) 243 return -EPERM; 244 245 /* disable debug mode */ 246 mutex_lock(&hw->hw_info.lock); 247 ret = fjes_hw_stop_debug(hw); 248 mutex_unlock(&hw->hw_info.lock); 249 } 250 251 return ret; 252 } 253 254 static int fjes_get_dump_flag(struct net_device *netdev, 255 struct ethtool_dump *dump) 256 { 257 struct fjes_adapter *adapter = netdev_priv(netdev); 258 struct fjes_hw *hw = &adapter->hw; 259 260 dump->len = hw->hw_info.trace_size; 261 dump->version = 1; 262 dump->flag = hw->debug_mode; 263 264 return 0; 265 } 266 267 static int fjes_get_dump_data(struct net_device *netdev, 268 struct ethtool_dump *dump, void *buf) 269 { 270 struct fjes_adapter *adapter = netdev_priv(netdev); 271 struct fjes_hw *hw = &adapter->hw; 272 int ret = 0; 273 274 if (hw->hw_info.trace) 275 memcpy(buf, hw->hw_info.trace, hw->hw_info.trace_size); 276 else 277 ret = -EPERM; 278 279 return ret; 280 } 281 282 static const struct ethtool_ops fjes_ethtool_ops = { 283 .get_drvinfo = fjes_get_drvinfo, 284 .get_ethtool_stats = fjes_get_ethtool_stats, 285 .get_strings = fjes_get_strings, 286 .get_sset_count = fjes_get_sset_count, 287 .get_regs = fjes_get_regs, 288 .get_regs_len = fjes_get_regs_len, 289 .set_dump = fjes_set_dump, 290 .get_dump_flag = fjes_get_dump_flag, 291 .get_dump_data = fjes_get_dump_data, 292 .get_link_ksettings = fjes_get_link_ksettings, 293 }; 294 295 void fjes_set_ethtool_ops(struct net_device *netdev) 296 { 297 netdev->ethtool_ops = &fjes_ethtool_ops; 298 } 299