1 /* Intel(R) Ethernet Switch Host Interface Driver 2 * Copyright(c) 2013 - 2016 Intel Corporation. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 * 13 * The full GNU General Public License is included in this distribution in 14 * the file called "COPYING". 15 * 16 * Contact Information: 17 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 18 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 19 */ 20 21 #include <linux/vmalloc.h> 22 23 #include "fm10k.h" 24 25 struct fm10k_stats { 26 char stat_string[ETH_GSTRING_LEN]; 27 int sizeof_stat; 28 int stat_offset; 29 }; 30 31 #define FM10K_NETDEV_STAT(_net_stat) { \ 32 .stat_string = #_net_stat, \ 33 .sizeof_stat = FIELD_SIZEOF(struct net_device_stats, _net_stat), \ 34 .stat_offset = offsetof(struct net_device_stats, _net_stat) \ 35 } 36 37 static const struct fm10k_stats fm10k_gstrings_net_stats[] = { 38 FM10K_NETDEV_STAT(tx_packets), 39 FM10K_NETDEV_STAT(tx_bytes), 40 FM10K_NETDEV_STAT(tx_errors), 41 FM10K_NETDEV_STAT(rx_packets), 42 FM10K_NETDEV_STAT(rx_bytes), 43 FM10K_NETDEV_STAT(rx_errors), 44 FM10K_NETDEV_STAT(rx_dropped), 45 46 /* detailed Rx errors */ 47 FM10K_NETDEV_STAT(rx_length_errors), 48 FM10K_NETDEV_STAT(rx_crc_errors), 49 FM10K_NETDEV_STAT(rx_fifo_errors), 50 }; 51 52 #define FM10K_NETDEV_STATS_LEN ARRAY_SIZE(fm10k_gstrings_net_stats) 53 54 #define FM10K_STAT(_name, _stat) { \ 55 .stat_string = _name, \ 56 .sizeof_stat = FIELD_SIZEOF(struct fm10k_intfc, _stat), \ 57 .stat_offset = offsetof(struct fm10k_intfc, _stat) \ 58 } 59 60 static const struct fm10k_stats fm10k_gstrings_global_stats[] = { 61 FM10K_STAT("tx_restart_queue", restart_queue), 62 FM10K_STAT("tx_busy", tx_busy), 63 FM10K_STAT("tx_csum_errors", tx_csum_errors), 64 FM10K_STAT("rx_alloc_failed", alloc_failed), 65 FM10K_STAT("rx_csum_errors", rx_csum_errors), 66 67 FM10K_STAT("tx_packets_nic", tx_packets_nic), 68 FM10K_STAT("tx_bytes_nic", tx_bytes_nic), 69 FM10K_STAT("rx_packets_nic", rx_packets_nic), 70 FM10K_STAT("rx_bytes_nic", rx_bytes_nic), 71 FM10K_STAT("rx_drops_nic", rx_drops_nic), 72 FM10K_STAT("rx_overrun_pf", rx_overrun_pf), 73 FM10K_STAT("rx_overrun_vf", rx_overrun_vf), 74 75 FM10K_STAT("swapi_status", hw.swapi.status), 76 FM10K_STAT("mac_rules_used", hw.swapi.mac.used), 77 FM10K_STAT("mac_rules_avail", hw.swapi.mac.avail), 78 79 FM10K_STAT("reset_while_pending", hw.mac.reset_while_pending), 80 81 FM10K_STAT("tx_hang_count", tx_timeout_count), 82 }; 83 84 static const struct fm10k_stats fm10k_gstrings_pf_stats[] = { 85 FM10K_STAT("timeout", stats.timeout.count), 86 FM10K_STAT("ur", stats.ur.count), 87 FM10K_STAT("ca", stats.ca.count), 88 FM10K_STAT("um", stats.um.count), 89 FM10K_STAT("xec", stats.xec.count), 90 FM10K_STAT("vlan_drop", stats.vlan_drop.count), 91 FM10K_STAT("loopback_drop", stats.loopback_drop.count), 92 FM10K_STAT("nodesc_drop", stats.nodesc_drop.count), 93 }; 94 95 #define FM10K_MBX_STAT(_name, _stat) { \ 96 .stat_string = _name, \ 97 .sizeof_stat = FIELD_SIZEOF(struct fm10k_mbx_info, _stat), \ 98 .stat_offset = offsetof(struct fm10k_mbx_info, _stat) \ 99 } 100 101 static const struct fm10k_stats fm10k_gstrings_mbx_stats[] = { 102 FM10K_MBX_STAT("mbx_tx_busy", tx_busy), 103 FM10K_MBX_STAT("mbx_tx_dropped", tx_dropped), 104 FM10K_MBX_STAT("mbx_tx_messages", tx_messages), 105 FM10K_MBX_STAT("mbx_tx_dwords", tx_dwords), 106 FM10K_MBX_STAT("mbx_tx_mbmem_pulled", tx_mbmem_pulled), 107 FM10K_MBX_STAT("mbx_rx_messages", rx_messages), 108 FM10K_MBX_STAT("mbx_rx_dwords", rx_dwords), 109 FM10K_MBX_STAT("mbx_rx_parse_err", rx_parse_err), 110 FM10K_MBX_STAT("mbx_rx_mbmem_pushed", rx_mbmem_pushed), 111 }; 112 113 #define FM10K_QUEUE_STAT(_name, _stat) { \ 114 .stat_string = _name, \ 115 .sizeof_stat = FIELD_SIZEOF(struct fm10k_ring, _stat), \ 116 .stat_offset = offsetof(struct fm10k_ring, _stat) \ 117 } 118 119 static const struct fm10k_stats fm10k_gstrings_queue_stats[] = { 120 FM10K_QUEUE_STAT("packets", stats.packets), 121 FM10K_QUEUE_STAT("bytes", stats.bytes), 122 }; 123 124 #define FM10K_GLOBAL_STATS_LEN ARRAY_SIZE(fm10k_gstrings_global_stats) 125 #define FM10K_PF_STATS_LEN ARRAY_SIZE(fm10k_gstrings_pf_stats) 126 #define FM10K_MBX_STATS_LEN ARRAY_SIZE(fm10k_gstrings_mbx_stats) 127 #define FM10K_QUEUE_STATS_LEN ARRAY_SIZE(fm10k_gstrings_queue_stats) 128 129 #define FM10K_STATIC_STATS_LEN (FM10K_GLOBAL_STATS_LEN + \ 130 FM10K_NETDEV_STATS_LEN + \ 131 FM10K_MBX_STATS_LEN) 132 133 static const char fm10k_gstrings_test[][ETH_GSTRING_LEN] = { 134 "Mailbox test (on/offline)" 135 }; 136 137 #define FM10K_TEST_LEN (sizeof(fm10k_gstrings_test) / ETH_GSTRING_LEN) 138 139 enum fm10k_self_test_types { 140 FM10K_TEST_MBX, 141 FM10K_TEST_MAX = FM10K_TEST_LEN 142 }; 143 144 enum { 145 FM10K_PRV_FLAG_LEN, 146 }; 147 148 static const char fm10k_prv_flags[FM10K_PRV_FLAG_LEN][ETH_GSTRING_LEN] = { 149 }; 150 151 static void fm10k_add_stat_strings(char **p, const char *prefix, 152 const struct fm10k_stats stats[], 153 const unsigned int size) 154 { 155 unsigned int i; 156 157 for (i = 0; i < size; i++) { 158 snprintf(*p, ETH_GSTRING_LEN, "%s%s", 159 prefix, stats[i].stat_string); 160 *p += ETH_GSTRING_LEN; 161 } 162 } 163 164 static void fm10k_get_stat_strings(struct net_device *dev, u8 *data) 165 { 166 struct fm10k_intfc *interface = netdev_priv(dev); 167 char *p = (char *)data; 168 unsigned int i; 169 170 fm10k_add_stat_strings(&p, "", fm10k_gstrings_net_stats, 171 FM10K_NETDEV_STATS_LEN); 172 173 fm10k_add_stat_strings(&p, "", fm10k_gstrings_global_stats, 174 FM10K_GLOBAL_STATS_LEN); 175 176 fm10k_add_stat_strings(&p, "", fm10k_gstrings_mbx_stats, 177 FM10K_MBX_STATS_LEN); 178 179 if (interface->hw.mac.type != fm10k_mac_vf) 180 fm10k_add_stat_strings(&p, "", fm10k_gstrings_pf_stats, 181 FM10K_PF_STATS_LEN); 182 183 for (i = 0; i < interface->hw.mac.max_queues; i++) { 184 char prefix[ETH_GSTRING_LEN]; 185 186 snprintf(prefix, ETH_GSTRING_LEN, "tx_queue_%u_", i); 187 fm10k_add_stat_strings(&p, prefix, 188 fm10k_gstrings_queue_stats, 189 FM10K_QUEUE_STATS_LEN); 190 191 snprintf(prefix, ETH_GSTRING_LEN, "rx_queue_%u_", i); 192 fm10k_add_stat_strings(&p, prefix, 193 fm10k_gstrings_queue_stats, 194 FM10K_QUEUE_STATS_LEN); 195 } 196 } 197 198 static void fm10k_get_strings(struct net_device *dev, 199 u32 stringset, u8 *data) 200 { 201 char *p = (char *)data; 202 203 switch (stringset) { 204 case ETH_SS_TEST: 205 memcpy(data, *fm10k_gstrings_test, 206 FM10K_TEST_LEN * ETH_GSTRING_LEN); 207 break; 208 case ETH_SS_STATS: 209 fm10k_get_stat_strings(dev, data); 210 break; 211 case ETH_SS_PRIV_FLAGS: 212 memcpy(p, fm10k_prv_flags, 213 FM10K_PRV_FLAG_LEN * ETH_GSTRING_LEN); 214 break; 215 } 216 } 217 218 static int fm10k_get_sset_count(struct net_device *dev, int sset) 219 { 220 struct fm10k_intfc *interface = netdev_priv(dev); 221 struct fm10k_hw *hw = &interface->hw; 222 int stats_len = FM10K_STATIC_STATS_LEN; 223 224 switch (sset) { 225 case ETH_SS_TEST: 226 return FM10K_TEST_LEN; 227 case ETH_SS_STATS: 228 stats_len += hw->mac.max_queues * 2 * FM10K_QUEUE_STATS_LEN; 229 230 if (hw->mac.type != fm10k_mac_vf) 231 stats_len += FM10K_PF_STATS_LEN; 232 233 return stats_len; 234 case ETH_SS_PRIV_FLAGS: 235 return FM10K_PRV_FLAG_LEN; 236 default: 237 return -EOPNOTSUPP; 238 } 239 } 240 241 static void fm10k_add_ethtool_stats(u64 **data, void *pointer, 242 const struct fm10k_stats stats[], 243 const unsigned int size) 244 { 245 unsigned int i; 246 char *p; 247 248 if (!pointer) { 249 /* memory is not zero allocated so we have to clear it */ 250 for (i = 0; i < size; i++) 251 *((*data)++) = 0; 252 return; 253 } 254 255 for (i = 0; i < size; i++) { 256 p = (char *)pointer + stats[i].stat_offset; 257 258 switch (stats[i].sizeof_stat) { 259 case sizeof(u64): 260 *((*data)++) = *(u64 *)p; 261 break; 262 case sizeof(u32): 263 *((*data)++) = *(u32 *)p; 264 break; 265 case sizeof(u16): 266 *((*data)++) = *(u16 *)p; 267 break; 268 case sizeof(u8): 269 *((*data)++) = *(u8 *)p; 270 break; 271 default: 272 *((*data)++) = 0; 273 } 274 } 275 } 276 277 static void fm10k_get_ethtool_stats(struct net_device *netdev, 278 struct ethtool_stats __always_unused *stats, 279 u64 *data) 280 { 281 struct fm10k_intfc *interface = netdev_priv(netdev); 282 struct net_device_stats *net_stats = &netdev->stats; 283 int i; 284 285 fm10k_update_stats(interface); 286 287 fm10k_add_ethtool_stats(&data, net_stats, fm10k_gstrings_net_stats, 288 FM10K_NETDEV_STATS_LEN); 289 290 fm10k_add_ethtool_stats(&data, interface, fm10k_gstrings_global_stats, 291 FM10K_GLOBAL_STATS_LEN); 292 293 fm10k_add_ethtool_stats(&data, &interface->hw.mbx, 294 fm10k_gstrings_mbx_stats, 295 FM10K_MBX_STATS_LEN); 296 297 if (interface->hw.mac.type != fm10k_mac_vf) { 298 fm10k_add_ethtool_stats(&data, interface, 299 fm10k_gstrings_pf_stats, 300 FM10K_PF_STATS_LEN); 301 } 302 303 for (i = 0; i < interface->hw.mac.max_queues; i++) { 304 struct fm10k_ring *ring; 305 306 ring = interface->tx_ring[i]; 307 fm10k_add_ethtool_stats(&data, ring, 308 fm10k_gstrings_queue_stats, 309 FM10K_QUEUE_STATS_LEN); 310 311 ring = interface->rx_ring[i]; 312 fm10k_add_ethtool_stats(&data, ring, 313 fm10k_gstrings_queue_stats, 314 FM10K_QUEUE_STATS_LEN); 315 } 316 } 317 318 /* If function below adds more registers this define needs to be updated */ 319 #define FM10K_REGS_LEN_Q 29 320 321 static void fm10k_get_reg_q(struct fm10k_hw *hw, u32 *buff, int i) 322 { 323 int idx = 0; 324 325 buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAL(i)); 326 buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAH(i)); 327 buff[idx++] = fm10k_read_reg(hw, FM10K_RDLEN(i)); 328 buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_RXCTRL(i)); 329 buff[idx++] = fm10k_read_reg(hw, FM10K_RDH(i)); 330 buff[idx++] = fm10k_read_reg(hw, FM10K_RDT(i)); 331 buff[idx++] = fm10k_read_reg(hw, FM10K_RXQCTL(i)); 332 buff[idx++] = fm10k_read_reg(hw, FM10K_RXDCTL(i)); 333 buff[idx++] = fm10k_read_reg(hw, FM10K_RXINT(i)); 334 buff[idx++] = fm10k_read_reg(hw, FM10K_SRRCTL(i)); 335 buff[idx++] = fm10k_read_reg(hw, FM10K_QPRC(i)); 336 buff[idx++] = fm10k_read_reg(hw, FM10K_QPRDC(i)); 337 buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_L(i)); 338 buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_H(i)); 339 buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAL(i)); 340 buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAH(i)); 341 buff[idx++] = fm10k_read_reg(hw, FM10K_TDLEN(i)); 342 buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_TXCTRL(i)); 343 buff[idx++] = fm10k_read_reg(hw, FM10K_TDH(i)); 344 buff[idx++] = fm10k_read_reg(hw, FM10K_TDT(i)); 345 buff[idx++] = fm10k_read_reg(hw, FM10K_TXDCTL(i)); 346 buff[idx++] = fm10k_read_reg(hw, FM10K_TXQCTL(i)); 347 buff[idx++] = fm10k_read_reg(hw, FM10K_TXINT(i)); 348 buff[idx++] = fm10k_read_reg(hw, FM10K_QPTC(i)); 349 buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_L(i)); 350 buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_H(i)); 351 buff[idx++] = fm10k_read_reg(hw, FM10K_TQDLOC(i)); 352 buff[idx++] = fm10k_read_reg(hw, FM10K_TX_SGLORT(i)); 353 buff[idx++] = fm10k_read_reg(hw, FM10K_PFVTCTL(i)); 354 355 BUG_ON(idx != FM10K_REGS_LEN_Q); 356 } 357 358 /* If function above adds more registers this define needs to be updated */ 359 #define FM10K_REGS_LEN_VSI 43 360 361 static void fm10k_get_reg_vsi(struct fm10k_hw *hw, u32 *buff, int i) 362 { 363 int idx = 0, j; 364 365 buff[idx++] = fm10k_read_reg(hw, FM10K_MRQC(i)); 366 for (j = 0; j < 10; j++) 367 buff[idx++] = fm10k_read_reg(hw, FM10K_RSSRK(i, j)); 368 for (j = 0; j < 32; j++) 369 buff[idx++] = fm10k_read_reg(hw, FM10K_RETA(i, j)); 370 371 BUG_ON(idx != FM10K_REGS_LEN_VSI); 372 } 373 374 static void fm10k_get_regs(struct net_device *netdev, 375 struct ethtool_regs *regs, void *p) 376 { 377 struct fm10k_intfc *interface = netdev_priv(netdev); 378 struct fm10k_hw *hw = &interface->hw; 379 u32 *buff = p; 380 u16 i; 381 382 regs->version = BIT(24) | (hw->revision_id << 16) | hw->device_id; 383 384 switch (hw->mac.type) { 385 case fm10k_mac_pf: 386 /* General PF Registers */ 387 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL); 388 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL_EXT); 389 *(buff++) = fm10k_read_reg(hw, FM10K_GCR); 390 *(buff++) = fm10k_read_reg(hw, FM10K_GCR_EXT); 391 392 for (i = 0; i < 8; i++) { 393 *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTMAP(i)); 394 *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTDEC(i)); 395 } 396 397 for (i = 0; i < 65; i++) { 398 fm10k_get_reg_vsi(hw, buff, i); 399 buff += FM10K_REGS_LEN_VSI; 400 } 401 402 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL); 403 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL2); 404 405 for (i = 0; i < FM10K_MAX_QUEUES_PF; i++) { 406 fm10k_get_reg_q(hw, buff, i); 407 buff += FM10K_REGS_LEN_Q; 408 } 409 410 *(buff++) = fm10k_read_reg(hw, FM10K_TPH_CTRL); 411 412 for (i = 0; i < 8; i++) 413 *(buff++) = fm10k_read_reg(hw, FM10K_INT_MAP(i)); 414 415 /* Interrupt Throttling Registers */ 416 for (i = 0; i < 130; i++) 417 *(buff++) = fm10k_read_reg(hw, FM10K_ITR(i)); 418 419 break; 420 case fm10k_mac_vf: 421 /* General VF registers */ 422 *(buff++) = fm10k_read_reg(hw, FM10K_VFCTRL); 423 *(buff++) = fm10k_read_reg(hw, FM10K_VFINT_MAP); 424 *(buff++) = fm10k_read_reg(hw, FM10K_VFSYSTIME); 425 426 /* Interrupt Throttling Registers */ 427 for (i = 0; i < 8; i++) 428 *(buff++) = fm10k_read_reg(hw, FM10K_VFITR(i)); 429 430 fm10k_get_reg_vsi(hw, buff, 0); 431 buff += FM10K_REGS_LEN_VSI; 432 433 for (i = 0; i < FM10K_MAX_QUEUES_POOL; i++) { 434 if (i < hw->mac.max_queues) 435 fm10k_get_reg_q(hw, buff, i); 436 else 437 memset(buff, 0, sizeof(u32) * FM10K_REGS_LEN_Q); 438 buff += FM10K_REGS_LEN_Q; 439 } 440 441 break; 442 default: 443 return; 444 } 445 } 446 447 /* If function above adds more registers these define need to be updated */ 448 #define FM10K_REGS_LEN_PF \ 449 (162 + (65 * FM10K_REGS_LEN_VSI) + (FM10K_MAX_QUEUES_PF * FM10K_REGS_LEN_Q)) 450 #define FM10K_REGS_LEN_VF \ 451 (11 + FM10K_REGS_LEN_VSI + (FM10K_MAX_QUEUES_POOL * FM10K_REGS_LEN_Q)) 452 453 static int fm10k_get_regs_len(struct net_device *netdev) 454 { 455 struct fm10k_intfc *interface = netdev_priv(netdev); 456 struct fm10k_hw *hw = &interface->hw; 457 458 switch (hw->mac.type) { 459 case fm10k_mac_pf: 460 return FM10K_REGS_LEN_PF * sizeof(u32); 461 case fm10k_mac_vf: 462 return FM10K_REGS_LEN_VF * sizeof(u32); 463 default: 464 return 0; 465 } 466 } 467 468 static void fm10k_get_drvinfo(struct net_device *dev, 469 struct ethtool_drvinfo *info) 470 { 471 struct fm10k_intfc *interface = netdev_priv(dev); 472 473 strncpy(info->driver, fm10k_driver_name, 474 sizeof(info->driver) - 1); 475 strncpy(info->version, fm10k_driver_version, 476 sizeof(info->version) - 1); 477 strncpy(info->bus_info, pci_name(interface->pdev), 478 sizeof(info->bus_info) - 1); 479 } 480 481 static void fm10k_get_pauseparam(struct net_device *dev, 482 struct ethtool_pauseparam *pause) 483 { 484 struct fm10k_intfc *interface = netdev_priv(dev); 485 486 /* record fixed values for autoneg and tx pause */ 487 pause->autoneg = 0; 488 pause->tx_pause = 1; 489 490 pause->rx_pause = interface->rx_pause ? 1 : 0; 491 } 492 493 static int fm10k_set_pauseparam(struct net_device *dev, 494 struct ethtool_pauseparam *pause) 495 { 496 struct fm10k_intfc *interface = netdev_priv(dev); 497 struct fm10k_hw *hw = &interface->hw; 498 499 if (pause->autoneg || !pause->tx_pause) 500 return -EINVAL; 501 502 /* we can only support pause on the PF to avoid head-of-line blocking */ 503 if (hw->mac.type == fm10k_mac_pf) 504 interface->rx_pause = pause->rx_pause ? ~0 : 0; 505 else if (pause->rx_pause) 506 return -EINVAL; 507 508 if (netif_running(dev)) 509 fm10k_update_rx_drop_en(interface); 510 511 return 0; 512 } 513 514 static u32 fm10k_get_msglevel(struct net_device *netdev) 515 { 516 struct fm10k_intfc *interface = netdev_priv(netdev); 517 518 return interface->msg_enable; 519 } 520 521 static void fm10k_set_msglevel(struct net_device *netdev, u32 data) 522 { 523 struct fm10k_intfc *interface = netdev_priv(netdev); 524 525 interface->msg_enable = data; 526 } 527 528 static void fm10k_get_ringparam(struct net_device *netdev, 529 struct ethtool_ringparam *ring) 530 { 531 struct fm10k_intfc *interface = netdev_priv(netdev); 532 533 ring->rx_max_pending = FM10K_MAX_RXD; 534 ring->tx_max_pending = FM10K_MAX_TXD; 535 ring->rx_mini_max_pending = 0; 536 ring->rx_jumbo_max_pending = 0; 537 ring->rx_pending = interface->rx_ring_count; 538 ring->tx_pending = interface->tx_ring_count; 539 ring->rx_mini_pending = 0; 540 ring->rx_jumbo_pending = 0; 541 } 542 543 static int fm10k_set_ringparam(struct net_device *netdev, 544 struct ethtool_ringparam *ring) 545 { 546 struct fm10k_intfc *interface = netdev_priv(netdev); 547 struct fm10k_ring *temp_ring; 548 int i, err = 0; 549 u32 new_rx_count, new_tx_count; 550 551 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) 552 return -EINVAL; 553 554 new_tx_count = clamp_t(u32, ring->tx_pending, 555 FM10K_MIN_TXD, FM10K_MAX_TXD); 556 new_tx_count = ALIGN(new_tx_count, FM10K_REQ_TX_DESCRIPTOR_MULTIPLE); 557 558 new_rx_count = clamp_t(u32, ring->rx_pending, 559 FM10K_MIN_RXD, FM10K_MAX_RXD); 560 new_rx_count = ALIGN(new_rx_count, FM10K_REQ_RX_DESCRIPTOR_MULTIPLE); 561 562 if ((new_tx_count == interface->tx_ring_count) && 563 (new_rx_count == interface->rx_ring_count)) { 564 /* nothing to do */ 565 return 0; 566 } 567 568 while (test_and_set_bit(__FM10K_RESETTING, &interface->state)) 569 usleep_range(1000, 2000); 570 571 if (!netif_running(interface->netdev)) { 572 for (i = 0; i < interface->num_tx_queues; i++) 573 interface->tx_ring[i]->count = new_tx_count; 574 for (i = 0; i < interface->num_rx_queues; i++) 575 interface->rx_ring[i]->count = new_rx_count; 576 interface->tx_ring_count = new_tx_count; 577 interface->rx_ring_count = new_rx_count; 578 goto clear_reset; 579 } 580 581 /* allocate temporary buffer to store rings in */ 582 i = max_t(int, interface->num_tx_queues, interface->num_rx_queues); 583 temp_ring = vmalloc(i * sizeof(struct fm10k_ring)); 584 585 if (!temp_ring) { 586 err = -ENOMEM; 587 goto clear_reset; 588 } 589 590 fm10k_down(interface); 591 592 /* Setup new Tx resources and free the old Tx resources in that order. 593 * We can then assign the new resources to the rings via a memcpy. 594 * The advantage to this approach is that we are guaranteed to still 595 * have resources even in the case of an allocation failure. 596 */ 597 if (new_tx_count != interface->tx_ring_count) { 598 for (i = 0; i < interface->num_tx_queues; i++) { 599 memcpy(&temp_ring[i], interface->tx_ring[i], 600 sizeof(struct fm10k_ring)); 601 602 temp_ring[i].count = new_tx_count; 603 err = fm10k_setup_tx_resources(&temp_ring[i]); 604 if (err) { 605 while (i) { 606 i--; 607 fm10k_free_tx_resources(&temp_ring[i]); 608 } 609 goto err_setup; 610 } 611 } 612 613 for (i = 0; i < interface->num_tx_queues; i++) { 614 fm10k_free_tx_resources(interface->tx_ring[i]); 615 616 memcpy(interface->tx_ring[i], &temp_ring[i], 617 sizeof(struct fm10k_ring)); 618 } 619 620 interface->tx_ring_count = new_tx_count; 621 } 622 623 /* Repeat the process for the Rx rings if needed */ 624 if (new_rx_count != interface->rx_ring_count) { 625 for (i = 0; i < interface->num_rx_queues; i++) { 626 memcpy(&temp_ring[i], interface->rx_ring[i], 627 sizeof(struct fm10k_ring)); 628 629 temp_ring[i].count = new_rx_count; 630 err = fm10k_setup_rx_resources(&temp_ring[i]); 631 if (err) { 632 while (i) { 633 i--; 634 fm10k_free_rx_resources(&temp_ring[i]); 635 } 636 goto err_setup; 637 } 638 } 639 640 for (i = 0; i < interface->num_rx_queues; i++) { 641 fm10k_free_rx_resources(interface->rx_ring[i]); 642 643 memcpy(interface->rx_ring[i], &temp_ring[i], 644 sizeof(struct fm10k_ring)); 645 } 646 647 interface->rx_ring_count = new_rx_count; 648 } 649 650 err_setup: 651 fm10k_up(interface); 652 vfree(temp_ring); 653 clear_reset: 654 clear_bit(__FM10K_RESETTING, &interface->state); 655 return err; 656 } 657 658 static int fm10k_get_coalesce(struct net_device *dev, 659 struct ethtool_coalesce *ec) 660 { 661 struct fm10k_intfc *interface = netdev_priv(dev); 662 663 ec->use_adaptive_tx_coalesce = ITR_IS_ADAPTIVE(interface->tx_itr); 664 ec->tx_coalesce_usecs = interface->tx_itr & ~FM10K_ITR_ADAPTIVE; 665 666 ec->use_adaptive_rx_coalesce = ITR_IS_ADAPTIVE(interface->rx_itr); 667 ec->rx_coalesce_usecs = interface->rx_itr & ~FM10K_ITR_ADAPTIVE; 668 669 return 0; 670 } 671 672 static int fm10k_set_coalesce(struct net_device *dev, 673 struct ethtool_coalesce *ec) 674 { 675 struct fm10k_intfc *interface = netdev_priv(dev); 676 struct fm10k_q_vector *qv; 677 u16 tx_itr, rx_itr; 678 int i; 679 680 /* verify limits */ 681 if ((ec->rx_coalesce_usecs > FM10K_ITR_MAX) || 682 (ec->tx_coalesce_usecs > FM10K_ITR_MAX)) 683 return -EINVAL; 684 685 /* record settings */ 686 tx_itr = ec->tx_coalesce_usecs; 687 rx_itr = ec->rx_coalesce_usecs; 688 689 /* set initial values for adaptive ITR */ 690 if (ec->use_adaptive_tx_coalesce) 691 tx_itr = FM10K_ITR_ADAPTIVE | FM10K_TX_ITR_DEFAULT; 692 693 if (ec->use_adaptive_rx_coalesce) 694 rx_itr = FM10K_ITR_ADAPTIVE | FM10K_RX_ITR_DEFAULT; 695 696 /* update interface */ 697 interface->tx_itr = tx_itr; 698 interface->rx_itr = rx_itr; 699 700 /* update q_vectors */ 701 for (i = 0; i < interface->num_q_vectors; i++) { 702 qv = interface->q_vector[i]; 703 qv->tx.itr = tx_itr; 704 qv->rx.itr = rx_itr; 705 } 706 707 return 0; 708 } 709 710 static int fm10k_get_rss_hash_opts(struct fm10k_intfc *interface, 711 struct ethtool_rxnfc *cmd) 712 { 713 cmd->data = 0; 714 715 /* Report default options for RSS on fm10k */ 716 switch (cmd->flow_type) { 717 case TCP_V4_FLOW: 718 case TCP_V6_FLOW: 719 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 720 /* fall through */ 721 case UDP_V4_FLOW: 722 if (interface->flags & FM10K_FLAG_RSS_FIELD_IPV4_UDP) 723 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 724 /* fall through */ 725 case SCTP_V4_FLOW: 726 case SCTP_V6_FLOW: 727 case AH_ESP_V4_FLOW: 728 case AH_ESP_V6_FLOW: 729 case AH_V4_FLOW: 730 case AH_V6_FLOW: 731 case ESP_V4_FLOW: 732 case ESP_V6_FLOW: 733 case IPV4_FLOW: 734 case IPV6_FLOW: 735 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 736 break; 737 case UDP_V6_FLOW: 738 if (interface->flags & FM10K_FLAG_RSS_FIELD_IPV6_UDP) 739 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 740 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 741 break; 742 default: 743 return -EINVAL; 744 } 745 746 return 0; 747 } 748 749 static int fm10k_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd, 750 u32 __always_unused *rule_locs) 751 { 752 struct fm10k_intfc *interface = netdev_priv(dev); 753 int ret = -EOPNOTSUPP; 754 755 switch (cmd->cmd) { 756 case ETHTOOL_GRXRINGS: 757 cmd->data = interface->num_rx_queues; 758 ret = 0; 759 break; 760 case ETHTOOL_GRXFH: 761 ret = fm10k_get_rss_hash_opts(interface, cmd); 762 break; 763 default: 764 break; 765 } 766 767 return ret; 768 } 769 770 #define UDP_RSS_FLAGS (FM10K_FLAG_RSS_FIELD_IPV4_UDP | \ 771 FM10K_FLAG_RSS_FIELD_IPV6_UDP) 772 static int fm10k_set_rss_hash_opt(struct fm10k_intfc *interface, 773 struct ethtool_rxnfc *nfc) 774 { 775 u32 flags = interface->flags; 776 777 /* RSS does not support anything other than hashing 778 * to queues on src and dst IPs and ports 779 */ 780 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | 781 RXH_L4_B_0_1 | RXH_L4_B_2_3)) 782 return -EINVAL; 783 784 switch (nfc->flow_type) { 785 case TCP_V4_FLOW: 786 case TCP_V6_FLOW: 787 if (!(nfc->data & RXH_IP_SRC) || 788 !(nfc->data & RXH_IP_DST) || 789 !(nfc->data & RXH_L4_B_0_1) || 790 !(nfc->data & RXH_L4_B_2_3)) 791 return -EINVAL; 792 break; 793 case UDP_V4_FLOW: 794 if (!(nfc->data & RXH_IP_SRC) || 795 !(nfc->data & RXH_IP_DST)) 796 return -EINVAL; 797 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { 798 case 0: 799 flags &= ~FM10K_FLAG_RSS_FIELD_IPV4_UDP; 800 break; 801 case (RXH_L4_B_0_1 | RXH_L4_B_2_3): 802 flags |= FM10K_FLAG_RSS_FIELD_IPV4_UDP; 803 break; 804 default: 805 return -EINVAL; 806 } 807 break; 808 case UDP_V6_FLOW: 809 if (!(nfc->data & RXH_IP_SRC) || 810 !(nfc->data & RXH_IP_DST)) 811 return -EINVAL; 812 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { 813 case 0: 814 flags &= ~FM10K_FLAG_RSS_FIELD_IPV6_UDP; 815 break; 816 case (RXH_L4_B_0_1 | RXH_L4_B_2_3): 817 flags |= FM10K_FLAG_RSS_FIELD_IPV6_UDP; 818 break; 819 default: 820 return -EINVAL; 821 } 822 break; 823 case AH_ESP_V4_FLOW: 824 case AH_V4_FLOW: 825 case ESP_V4_FLOW: 826 case SCTP_V4_FLOW: 827 case AH_ESP_V6_FLOW: 828 case AH_V6_FLOW: 829 case ESP_V6_FLOW: 830 case SCTP_V6_FLOW: 831 if (!(nfc->data & RXH_IP_SRC) || 832 !(nfc->data & RXH_IP_DST) || 833 (nfc->data & RXH_L4_B_0_1) || 834 (nfc->data & RXH_L4_B_2_3)) 835 return -EINVAL; 836 break; 837 default: 838 return -EINVAL; 839 } 840 841 /* if we changed something we need to update flags */ 842 if (flags != interface->flags) { 843 struct fm10k_hw *hw = &interface->hw; 844 u32 mrqc; 845 846 if ((flags & UDP_RSS_FLAGS) && 847 !(interface->flags & UDP_RSS_FLAGS)) 848 netif_warn(interface, drv, interface->netdev, 849 "enabling UDP RSS: fragmented packets may arrive out of order to the stack above\n"); 850 851 interface->flags = flags; 852 853 /* Perform hash on these packet types */ 854 mrqc = FM10K_MRQC_IPV4 | 855 FM10K_MRQC_TCP_IPV4 | 856 FM10K_MRQC_IPV6 | 857 FM10K_MRQC_TCP_IPV6; 858 859 if (flags & FM10K_FLAG_RSS_FIELD_IPV4_UDP) 860 mrqc |= FM10K_MRQC_UDP_IPV4; 861 if (flags & FM10K_FLAG_RSS_FIELD_IPV6_UDP) 862 mrqc |= FM10K_MRQC_UDP_IPV6; 863 864 fm10k_write_reg(hw, FM10K_MRQC(0), mrqc); 865 } 866 867 return 0; 868 } 869 870 static int fm10k_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd) 871 { 872 struct fm10k_intfc *interface = netdev_priv(dev); 873 int ret = -EOPNOTSUPP; 874 875 switch (cmd->cmd) { 876 case ETHTOOL_SRXFH: 877 ret = fm10k_set_rss_hash_opt(interface, cmd); 878 break; 879 default: 880 break; 881 } 882 883 return ret; 884 } 885 886 static int fm10k_mbx_test(struct fm10k_intfc *interface, u64 *data) 887 { 888 struct fm10k_hw *hw = &interface->hw; 889 struct fm10k_mbx_info *mbx = &hw->mbx; 890 u32 attr_flag, test_msg[6]; 891 unsigned long timeout; 892 int err = -EINVAL; 893 894 /* For now this is a VF only feature */ 895 if (hw->mac.type != fm10k_mac_vf) 896 return 0; 897 898 /* loop through both nested and unnested attribute types */ 899 for (attr_flag = BIT(FM10K_TEST_MSG_UNSET); 900 attr_flag < BIT(2 * FM10K_TEST_MSG_NESTED); 901 attr_flag += attr_flag) { 902 /* generate message to be tested */ 903 fm10k_tlv_msg_test_create(test_msg, attr_flag); 904 905 fm10k_mbx_lock(interface); 906 mbx->test_result = FM10K_NOT_IMPLEMENTED; 907 err = mbx->ops.enqueue_tx(hw, mbx, test_msg); 908 fm10k_mbx_unlock(interface); 909 910 /* wait up to 1 second for response */ 911 timeout = jiffies + HZ; 912 do { 913 if (err < 0) 914 goto err_out; 915 916 usleep_range(500, 1000); 917 918 fm10k_mbx_lock(interface); 919 mbx->ops.process(hw, mbx); 920 fm10k_mbx_unlock(interface); 921 922 err = mbx->test_result; 923 if (!err) 924 break; 925 } while (time_is_after_jiffies(timeout)); 926 927 /* reporting errors */ 928 if (err) 929 goto err_out; 930 } 931 932 err_out: 933 *data = err < 0 ? (attr_flag) : (err > 0); 934 return err; 935 } 936 937 static void fm10k_self_test(struct net_device *dev, 938 struct ethtool_test *eth_test, u64 *data) 939 { 940 struct fm10k_intfc *interface = netdev_priv(dev); 941 struct fm10k_hw *hw = &interface->hw; 942 943 memset(data, 0, sizeof(*data) * FM10K_TEST_LEN); 944 945 if (FM10K_REMOVED(hw)) { 946 netif_err(interface, drv, dev, 947 "Interface removed - test blocked\n"); 948 eth_test->flags |= ETH_TEST_FL_FAILED; 949 return; 950 } 951 952 if (fm10k_mbx_test(interface, &data[FM10K_TEST_MBX])) 953 eth_test->flags |= ETH_TEST_FL_FAILED; 954 } 955 956 static u32 fm10k_get_priv_flags(struct net_device *netdev) 957 { 958 return 0; 959 } 960 961 static int fm10k_set_priv_flags(struct net_device *netdev, u32 priv_flags) 962 { 963 if (priv_flags >= BIT(FM10K_PRV_FLAG_LEN)) 964 return -EINVAL; 965 966 return 0; 967 } 968 969 u32 fm10k_get_reta_size(struct net_device __always_unused *netdev) 970 { 971 return FM10K_RETA_SIZE * FM10K_RETA_ENTRIES_PER_REG; 972 } 973 974 void fm10k_write_reta(struct fm10k_intfc *interface, const u32 *indir) 975 { 976 u16 rss_i = interface->ring_feature[RING_F_RSS].indices; 977 struct fm10k_hw *hw = &interface->hw; 978 u32 table[4]; 979 int i, j; 980 981 /* record entries to reta table */ 982 for (i = 0; i < FM10K_RETA_SIZE; i++) { 983 u32 reta, n; 984 985 /* generate a new table if we weren't given one */ 986 for (j = 0; j < 4; j++) { 987 if (indir) 988 n = indir[4 * i + j]; 989 else 990 n = ethtool_rxfh_indir_default(4 * i + j, 991 rss_i); 992 993 table[j] = n; 994 } 995 996 reta = table[0] | 997 (table[1] << 8) | 998 (table[2] << 16) | 999 (table[3] << 24); 1000 1001 if (interface->reta[i] == reta) 1002 continue; 1003 1004 interface->reta[i] = reta; 1005 fm10k_write_reg(hw, FM10K_RETA(0, i), reta); 1006 } 1007 } 1008 1009 static int fm10k_get_reta(struct net_device *netdev, u32 *indir) 1010 { 1011 struct fm10k_intfc *interface = netdev_priv(netdev); 1012 int i; 1013 1014 if (!indir) 1015 return 0; 1016 1017 for (i = 0; i < FM10K_RETA_SIZE; i++, indir += 4) { 1018 u32 reta = interface->reta[i]; 1019 1020 indir[0] = (reta << 24) >> 24; 1021 indir[1] = (reta << 16) >> 24; 1022 indir[2] = (reta << 8) >> 24; 1023 indir[3] = (reta) >> 24; 1024 } 1025 1026 return 0; 1027 } 1028 1029 static int fm10k_set_reta(struct net_device *netdev, const u32 *indir) 1030 { 1031 struct fm10k_intfc *interface = netdev_priv(netdev); 1032 int i; 1033 u16 rss_i; 1034 1035 if (!indir) 1036 return 0; 1037 1038 /* Verify user input. */ 1039 rss_i = interface->ring_feature[RING_F_RSS].indices; 1040 for (i = fm10k_get_reta_size(netdev); i--;) { 1041 if (indir[i] < rss_i) 1042 continue; 1043 return -EINVAL; 1044 } 1045 1046 fm10k_write_reta(interface, indir); 1047 1048 return 0; 1049 } 1050 1051 static u32 fm10k_get_rssrk_size(struct net_device __always_unused *netdev) 1052 { 1053 return FM10K_RSSRK_SIZE * FM10K_RSSRK_ENTRIES_PER_REG; 1054 } 1055 1056 static int fm10k_get_rssh(struct net_device *netdev, u32 *indir, u8 *key, 1057 u8 *hfunc) 1058 { 1059 struct fm10k_intfc *interface = netdev_priv(netdev); 1060 int i, err; 1061 1062 if (hfunc) 1063 *hfunc = ETH_RSS_HASH_TOP; 1064 1065 err = fm10k_get_reta(netdev, indir); 1066 if (err || !key) 1067 return err; 1068 1069 for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4) 1070 *(__le32 *)key = cpu_to_le32(interface->rssrk[i]); 1071 1072 return 0; 1073 } 1074 1075 static int fm10k_set_rssh(struct net_device *netdev, const u32 *indir, 1076 const u8 *key, const u8 hfunc) 1077 { 1078 struct fm10k_intfc *interface = netdev_priv(netdev); 1079 struct fm10k_hw *hw = &interface->hw; 1080 int i, err; 1081 1082 /* We do not allow change in unsupported parameters */ 1083 if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) 1084 return -EOPNOTSUPP; 1085 1086 err = fm10k_set_reta(netdev, indir); 1087 if (err || !key) 1088 return err; 1089 1090 for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4) { 1091 u32 rssrk = le32_to_cpu(*(__le32 *)key); 1092 1093 if (interface->rssrk[i] == rssrk) 1094 continue; 1095 1096 interface->rssrk[i] = rssrk; 1097 fm10k_write_reg(hw, FM10K_RSSRK(0, i), rssrk); 1098 } 1099 1100 return 0; 1101 } 1102 1103 static unsigned int fm10k_max_channels(struct net_device *dev) 1104 { 1105 struct fm10k_intfc *interface = netdev_priv(dev); 1106 unsigned int max_combined = interface->hw.mac.max_queues; 1107 u8 tcs = netdev_get_num_tc(dev); 1108 1109 /* For QoS report channels per traffic class */ 1110 if (tcs > 1) 1111 max_combined = BIT((fls(max_combined / tcs) - 1)); 1112 1113 return max_combined; 1114 } 1115 1116 static void fm10k_get_channels(struct net_device *dev, 1117 struct ethtool_channels *ch) 1118 { 1119 struct fm10k_intfc *interface = netdev_priv(dev); 1120 struct fm10k_hw *hw = &interface->hw; 1121 1122 /* report maximum channels */ 1123 ch->max_combined = fm10k_max_channels(dev); 1124 1125 /* report info for other vector */ 1126 ch->max_other = NON_Q_VECTORS(hw); 1127 ch->other_count = ch->max_other; 1128 1129 /* record RSS queues */ 1130 ch->combined_count = interface->ring_feature[RING_F_RSS].indices; 1131 } 1132 1133 static int fm10k_set_channels(struct net_device *dev, 1134 struct ethtool_channels *ch) 1135 { 1136 struct fm10k_intfc *interface = netdev_priv(dev); 1137 unsigned int count = ch->combined_count; 1138 struct fm10k_hw *hw = &interface->hw; 1139 1140 /* verify they are not requesting separate vectors */ 1141 if (!count || ch->rx_count || ch->tx_count) 1142 return -EINVAL; 1143 1144 /* verify other_count has not changed */ 1145 if (ch->other_count != NON_Q_VECTORS(hw)) 1146 return -EINVAL; 1147 1148 /* verify the number of channels does not exceed hardware limits */ 1149 if (count > fm10k_max_channels(dev)) 1150 return -EINVAL; 1151 1152 interface->ring_feature[RING_F_RSS].limit = count; 1153 1154 /* use setup TC to update any traffic class queue mapping */ 1155 return fm10k_setup_tc(dev, netdev_get_num_tc(dev)); 1156 } 1157 1158 static const struct ethtool_ops fm10k_ethtool_ops = { 1159 .get_strings = fm10k_get_strings, 1160 .get_sset_count = fm10k_get_sset_count, 1161 .get_ethtool_stats = fm10k_get_ethtool_stats, 1162 .get_drvinfo = fm10k_get_drvinfo, 1163 .get_link = ethtool_op_get_link, 1164 .get_pauseparam = fm10k_get_pauseparam, 1165 .set_pauseparam = fm10k_set_pauseparam, 1166 .get_msglevel = fm10k_get_msglevel, 1167 .set_msglevel = fm10k_set_msglevel, 1168 .get_ringparam = fm10k_get_ringparam, 1169 .set_ringparam = fm10k_set_ringparam, 1170 .get_coalesce = fm10k_get_coalesce, 1171 .set_coalesce = fm10k_set_coalesce, 1172 .get_rxnfc = fm10k_get_rxnfc, 1173 .set_rxnfc = fm10k_set_rxnfc, 1174 .get_regs = fm10k_get_regs, 1175 .get_regs_len = fm10k_get_regs_len, 1176 .self_test = fm10k_self_test, 1177 .get_priv_flags = fm10k_get_priv_flags, 1178 .set_priv_flags = fm10k_set_priv_flags, 1179 .get_rxfh_indir_size = fm10k_get_reta_size, 1180 .get_rxfh_key_size = fm10k_get_rssrk_size, 1181 .get_rxfh = fm10k_get_rssh, 1182 .set_rxfh = fm10k_set_rssh, 1183 .get_channels = fm10k_get_channels, 1184 .set_channels = fm10k_set_channels, 1185 }; 1186 1187 void fm10k_set_ethtool_ops(struct net_device *dev) 1188 { 1189 dev->ethtool_ops = &fm10k_ethtool_ops; 1190 } 1191