1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2013 - 2018 Intel Corporation. */ 3 4 #include <linux/vmalloc.h> 5 6 #include "fm10k.h" 7 8 struct fm10k_stats { 9 /* The stat_string is expected to be a format string formatted using 10 * vsnprintf by fm10k_add_stat_strings. Every member of a stats array 11 * should use the same format specifiers as they will be formatted 12 * using the same variadic arguments. 13 */ 14 char stat_string[ETH_GSTRING_LEN]; 15 int sizeof_stat; 16 int stat_offset; 17 }; 18 19 #define FM10K_STAT_FIELDS(_type, _name, _stat) { \ 20 .stat_string = _name, \ 21 .sizeof_stat = FIELD_SIZEOF(_type, _stat), \ 22 .stat_offset = offsetof(_type, _stat) \ 23 } 24 25 /* netdevice statistics */ 26 #define FM10K_NETDEV_STAT(_net_stat) \ 27 FM10K_STAT_FIELDS(struct net_device_stats, __stringify(_net_stat), \ 28 _net_stat) 29 30 static const struct fm10k_stats fm10k_gstrings_net_stats[] = { 31 FM10K_NETDEV_STAT(tx_packets), 32 FM10K_NETDEV_STAT(tx_bytes), 33 FM10K_NETDEV_STAT(tx_errors), 34 FM10K_NETDEV_STAT(rx_packets), 35 FM10K_NETDEV_STAT(rx_bytes), 36 FM10K_NETDEV_STAT(rx_errors), 37 FM10K_NETDEV_STAT(rx_dropped), 38 39 /* detailed Rx errors */ 40 FM10K_NETDEV_STAT(rx_length_errors), 41 FM10K_NETDEV_STAT(rx_crc_errors), 42 FM10K_NETDEV_STAT(rx_fifo_errors), 43 }; 44 45 #define FM10K_NETDEV_STATS_LEN ARRAY_SIZE(fm10k_gstrings_net_stats) 46 47 /* General interface statistics */ 48 #define FM10K_STAT(_name, _stat) \ 49 FM10K_STAT_FIELDS(struct fm10k_intfc, _name, _stat) 50 51 static const struct fm10k_stats fm10k_gstrings_global_stats[] = { 52 FM10K_STAT("tx_restart_queue", restart_queue), 53 FM10K_STAT("tx_busy", tx_busy), 54 FM10K_STAT("tx_csum_errors", tx_csum_errors), 55 FM10K_STAT("rx_alloc_failed", alloc_failed), 56 FM10K_STAT("rx_csum_errors", rx_csum_errors), 57 58 FM10K_STAT("tx_packets_nic", tx_packets_nic), 59 FM10K_STAT("tx_bytes_nic", tx_bytes_nic), 60 FM10K_STAT("rx_packets_nic", rx_packets_nic), 61 FM10K_STAT("rx_bytes_nic", rx_bytes_nic), 62 FM10K_STAT("rx_drops_nic", rx_drops_nic), 63 FM10K_STAT("rx_overrun_pf", rx_overrun_pf), 64 FM10K_STAT("rx_overrun_vf", rx_overrun_vf), 65 66 FM10K_STAT("swapi_status", hw.swapi.status), 67 FM10K_STAT("mac_rules_used", hw.swapi.mac.used), 68 FM10K_STAT("mac_rules_avail", hw.swapi.mac.avail), 69 70 FM10K_STAT("reset_while_pending", hw.mac.reset_while_pending), 71 72 FM10K_STAT("tx_hang_count", tx_timeout_count), 73 }; 74 75 static const struct fm10k_stats fm10k_gstrings_pf_stats[] = { 76 FM10K_STAT("timeout", stats.timeout.count), 77 FM10K_STAT("ur", stats.ur.count), 78 FM10K_STAT("ca", stats.ca.count), 79 FM10K_STAT("um", stats.um.count), 80 FM10K_STAT("xec", stats.xec.count), 81 FM10K_STAT("vlan_drop", stats.vlan_drop.count), 82 FM10K_STAT("loopback_drop", stats.loopback_drop.count), 83 FM10K_STAT("nodesc_drop", stats.nodesc_drop.count), 84 }; 85 86 /* mailbox statistics */ 87 #define FM10K_MBX_STAT(_name, _stat) \ 88 FM10K_STAT_FIELDS(struct fm10k_mbx_info, _name, _stat) 89 90 static const struct fm10k_stats fm10k_gstrings_mbx_stats[] = { 91 FM10K_MBX_STAT("mbx_tx_busy", tx_busy), 92 FM10K_MBX_STAT("mbx_tx_dropped", tx_dropped), 93 FM10K_MBX_STAT("mbx_tx_messages", tx_messages), 94 FM10K_MBX_STAT("mbx_tx_dwords", tx_dwords), 95 FM10K_MBX_STAT("mbx_tx_mbmem_pulled", tx_mbmem_pulled), 96 FM10K_MBX_STAT("mbx_rx_messages", rx_messages), 97 FM10K_MBX_STAT("mbx_rx_dwords", rx_dwords), 98 FM10K_MBX_STAT("mbx_rx_parse_err", rx_parse_err), 99 FM10K_MBX_STAT("mbx_rx_mbmem_pushed", rx_mbmem_pushed), 100 }; 101 102 /* per-queue ring statistics */ 103 #define FM10K_QUEUE_STAT(_name, _stat) \ 104 FM10K_STAT_FIELDS(struct fm10k_ring, _name, _stat) 105 106 static const struct fm10k_stats fm10k_gstrings_queue_stats[] = { 107 FM10K_QUEUE_STAT("%s_queue_%u_packets", stats.packets), 108 FM10K_QUEUE_STAT("%s_queue_%u_bytes", stats.bytes), 109 }; 110 111 #define FM10K_GLOBAL_STATS_LEN ARRAY_SIZE(fm10k_gstrings_global_stats) 112 #define FM10K_PF_STATS_LEN ARRAY_SIZE(fm10k_gstrings_pf_stats) 113 #define FM10K_MBX_STATS_LEN ARRAY_SIZE(fm10k_gstrings_mbx_stats) 114 #define FM10K_QUEUE_STATS_LEN ARRAY_SIZE(fm10k_gstrings_queue_stats) 115 116 #define FM10K_STATIC_STATS_LEN (FM10K_GLOBAL_STATS_LEN + \ 117 FM10K_NETDEV_STATS_LEN + \ 118 FM10K_MBX_STATS_LEN) 119 120 static const char fm10k_gstrings_test[][ETH_GSTRING_LEN] = { 121 "Mailbox test (on/offline)" 122 }; 123 124 #define FM10K_TEST_LEN (sizeof(fm10k_gstrings_test) / ETH_GSTRING_LEN) 125 126 enum fm10k_self_test_types { 127 FM10K_TEST_MBX, 128 FM10K_TEST_MAX = FM10K_TEST_LEN 129 }; 130 131 enum { 132 FM10K_PRV_FLAG_LEN, 133 }; 134 135 static const char fm10k_prv_flags[FM10K_PRV_FLAG_LEN][ETH_GSTRING_LEN] = { 136 }; 137 138 static void __fm10k_add_stat_strings(u8 **p, const struct fm10k_stats stats[], 139 const unsigned int size, ...) 140 { 141 unsigned int i; 142 143 for (i = 0; i < size; i++) { 144 va_list args; 145 146 va_start(args, size); 147 vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args); 148 *p += ETH_GSTRING_LEN; 149 va_end(args); 150 } 151 } 152 153 #define fm10k_add_stat_strings(p, stats, ...) \ 154 __fm10k_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__) 155 156 static void fm10k_get_stat_strings(struct net_device *dev, u8 *data) 157 { 158 struct fm10k_intfc *interface = netdev_priv(dev); 159 unsigned int i; 160 161 fm10k_add_stat_strings(&data, fm10k_gstrings_net_stats); 162 163 fm10k_add_stat_strings(&data, fm10k_gstrings_global_stats); 164 165 fm10k_add_stat_strings(&data, fm10k_gstrings_mbx_stats); 166 167 if (interface->hw.mac.type != fm10k_mac_vf) 168 fm10k_add_stat_strings(&data, fm10k_gstrings_pf_stats); 169 170 for (i = 0; i < interface->hw.mac.max_queues; i++) { 171 fm10k_add_stat_strings(&data, fm10k_gstrings_queue_stats, 172 "tx", i); 173 174 fm10k_add_stat_strings(&data, fm10k_gstrings_queue_stats, 175 "rx", i); 176 } 177 } 178 179 static void fm10k_get_strings(struct net_device *dev, 180 u32 stringset, u8 *data) 181 { 182 switch (stringset) { 183 case ETH_SS_TEST: 184 memcpy(data, fm10k_gstrings_test, 185 FM10K_TEST_LEN * ETH_GSTRING_LEN); 186 break; 187 case ETH_SS_STATS: 188 fm10k_get_stat_strings(dev, data); 189 break; 190 case ETH_SS_PRIV_FLAGS: 191 memcpy(data, fm10k_prv_flags, 192 FM10K_PRV_FLAG_LEN * ETH_GSTRING_LEN); 193 break; 194 } 195 } 196 197 static int fm10k_get_sset_count(struct net_device *dev, int sset) 198 { 199 struct fm10k_intfc *interface = netdev_priv(dev); 200 struct fm10k_hw *hw = &interface->hw; 201 int stats_len = FM10K_STATIC_STATS_LEN; 202 203 switch (sset) { 204 case ETH_SS_TEST: 205 return FM10K_TEST_LEN; 206 case ETH_SS_STATS: 207 stats_len += hw->mac.max_queues * 2 * FM10K_QUEUE_STATS_LEN; 208 209 if (hw->mac.type != fm10k_mac_vf) 210 stats_len += FM10K_PF_STATS_LEN; 211 212 return stats_len; 213 case ETH_SS_PRIV_FLAGS: 214 return FM10K_PRV_FLAG_LEN; 215 default: 216 return -EOPNOTSUPP; 217 } 218 } 219 220 static void __fm10k_add_ethtool_stats(u64 **data, void *pointer, 221 const struct fm10k_stats stats[], 222 const unsigned int size) 223 { 224 unsigned int i; 225 char *p; 226 227 if (!pointer) { 228 /* memory is not zero allocated so we have to clear it */ 229 for (i = 0; i < size; i++) 230 *((*data)++) = 0; 231 return; 232 } 233 234 for (i = 0; i < size; i++) { 235 p = (char *)pointer + stats[i].stat_offset; 236 237 switch (stats[i].sizeof_stat) { 238 case sizeof(u64): 239 *((*data)++) = *(u64 *)p; 240 break; 241 case sizeof(u32): 242 *((*data)++) = *(u32 *)p; 243 break; 244 case sizeof(u16): 245 *((*data)++) = *(u16 *)p; 246 break; 247 case sizeof(u8): 248 *((*data)++) = *(u8 *)p; 249 break; 250 default: 251 WARN_ONCE(1, "unexpected stat size for %s", 252 stats[i].stat_string); 253 *((*data)++) = 0; 254 } 255 } 256 } 257 258 #define fm10k_add_ethtool_stats(data, pointer, stats) \ 259 __fm10k_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats)) 260 261 static void fm10k_get_ethtool_stats(struct net_device *netdev, 262 struct ethtool_stats __always_unused *stats, 263 u64 *data) 264 { 265 struct fm10k_intfc *interface = netdev_priv(netdev); 266 struct net_device_stats *net_stats = &netdev->stats; 267 int i; 268 269 fm10k_update_stats(interface); 270 271 fm10k_add_ethtool_stats(&data, net_stats, fm10k_gstrings_net_stats); 272 273 fm10k_add_ethtool_stats(&data, interface, fm10k_gstrings_global_stats); 274 275 fm10k_add_ethtool_stats(&data, &interface->hw.mbx, 276 fm10k_gstrings_mbx_stats); 277 278 if (interface->hw.mac.type != fm10k_mac_vf) { 279 fm10k_add_ethtool_stats(&data, interface, 280 fm10k_gstrings_pf_stats); 281 } 282 283 for (i = 0; i < interface->hw.mac.max_queues; i++) { 284 struct fm10k_ring *ring; 285 286 ring = interface->tx_ring[i]; 287 fm10k_add_ethtool_stats(&data, ring, 288 fm10k_gstrings_queue_stats); 289 290 ring = interface->rx_ring[i]; 291 fm10k_add_ethtool_stats(&data, ring, 292 fm10k_gstrings_queue_stats); 293 } 294 } 295 296 /* If function below adds more registers this define needs to be updated */ 297 #define FM10K_REGS_LEN_Q 29 298 299 static void fm10k_get_reg_q(struct fm10k_hw *hw, u32 *buff, int i) 300 { 301 int idx = 0; 302 303 buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAL(i)); 304 buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAH(i)); 305 buff[idx++] = fm10k_read_reg(hw, FM10K_RDLEN(i)); 306 buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_RXCTRL(i)); 307 buff[idx++] = fm10k_read_reg(hw, FM10K_RDH(i)); 308 buff[idx++] = fm10k_read_reg(hw, FM10K_RDT(i)); 309 buff[idx++] = fm10k_read_reg(hw, FM10K_RXQCTL(i)); 310 buff[idx++] = fm10k_read_reg(hw, FM10K_RXDCTL(i)); 311 buff[idx++] = fm10k_read_reg(hw, FM10K_RXINT(i)); 312 buff[idx++] = fm10k_read_reg(hw, FM10K_SRRCTL(i)); 313 buff[idx++] = fm10k_read_reg(hw, FM10K_QPRC(i)); 314 buff[idx++] = fm10k_read_reg(hw, FM10K_QPRDC(i)); 315 buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_L(i)); 316 buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_H(i)); 317 buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAL(i)); 318 buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAH(i)); 319 buff[idx++] = fm10k_read_reg(hw, FM10K_TDLEN(i)); 320 buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_TXCTRL(i)); 321 buff[idx++] = fm10k_read_reg(hw, FM10K_TDH(i)); 322 buff[idx++] = fm10k_read_reg(hw, FM10K_TDT(i)); 323 buff[idx++] = fm10k_read_reg(hw, FM10K_TXDCTL(i)); 324 buff[idx++] = fm10k_read_reg(hw, FM10K_TXQCTL(i)); 325 buff[idx++] = fm10k_read_reg(hw, FM10K_TXINT(i)); 326 buff[idx++] = fm10k_read_reg(hw, FM10K_QPTC(i)); 327 buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_L(i)); 328 buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_H(i)); 329 buff[idx++] = fm10k_read_reg(hw, FM10K_TQDLOC(i)); 330 buff[idx++] = fm10k_read_reg(hw, FM10K_TX_SGLORT(i)); 331 buff[idx++] = fm10k_read_reg(hw, FM10K_PFVTCTL(i)); 332 333 BUG_ON(idx != FM10K_REGS_LEN_Q); 334 } 335 336 /* If function above adds more registers this define needs to be updated */ 337 #define FM10K_REGS_LEN_VSI 43 338 339 static void fm10k_get_reg_vsi(struct fm10k_hw *hw, u32 *buff, int i) 340 { 341 int idx = 0, j; 342 343 buff[idx++] = fm10k_read_reg(hw, FM10K_MRQC(i)); 344 for (j = 0; j < 10; j++) 345 buff[idx++] = fm10k_read_reg(hw, FM10K_RSSRK(i, j)); 346 for (j = 0; j < 32; j++) 347 buff[idx++] = fm10k_read_reg(hw, FM10K_RETA(i, j)); 348 349 BUG_ON(idx != FM10K_REGS_LEN_VSI); 350 } 351 352 static void fm10k_get_regs(struct net_device *netdev, 353 struct ethtool_regs *regs, void *p) 354 { 355 struct fm10k_intfc *interface = netdev_priv(netdev); 356 struct fm10k_hw *hw = &interface->hw; 357 u32 *buff = p; 358 u16 i; 359 360 regs->version = BIT(24) | (hw->revision_id << 16) | hw->device_id; 361 362 switch (hw->mac.type) { 363 case fm10k_mac_pf: 364 /* General PF Registers */ 365 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL); 366 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL_EXT); 367 *(buff++) = fm10k_read_reg(hw, FM10K_GCR); 368 *(buff++) = fm10k_read_reg(hw, FM10K_GCR_EXT); 369 370 for (i = 0; i < 8; i++) { 371 *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTMAP(i)); 372 *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTDEC(i)); 373 } 374 375 for (i = 0; i < 65; i++) { 376 fm10k_get_reg_vsi(hw, buff, i); 377 buff += FM10K_REGS_LEN_VSI; 378 } 379 380 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL); 381 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL2); 382 383 for (i = 0; i < FM10K_MAX_QUEUES_PF; i++) { 384 fm10k_get_reg_q(hw, buff, i); 385 buff += FM10K_REGS_LEN_Q; 386 } 387 388 *(buff++) = fm10k_read_reg(hw, FM10K_TPH_CTRL); 389 390 for (i = 0; i < 8; i++) 391 *(buff++) = fm10k_read_reg(hw, FM10K_INT_MAP(i)); 392 393 /* Interrupt Throttling Registers */ 394 for (i = 0; i < 130; i++) 395 *(buff++) = fm10k_read_reg(hw, FM10K_ITR(i)); 396 397 break; 398 case fm10k_mac_vf: 399 /* General VF registers */ 400 *(buff++) = fm10k_read_reg(hw, FM10K_VFCTRL); 401 *(buff++) = fm10k_read_reg(hw, FM10K_VFINT_MAP); 402 *(buff++) = fm10k_read_reg(hw, FM10K_VFSYSTIME); 403 404 /* Interrupt Throttling Registers */ 405 for (i = 0; i < 8; i++) 406 *(buff++) = fm10k_read_reg(hw, FM10K_VFITR(i)); 407 408 fm10k_get_reg_vsi(hw, buff, 0); 409 buff += FM10K_REGS_LEN_VSI; 410 411 for (i = 0; i < FM10K_MAX_QUEUES_POOL; i++) { 412 if (i < hw->mac.max_queues) 413 fm10k_get_reg_q(hw, buff, i); 414 else 415 memset(buff, 0, sizeof(u32) * FM10K_REGS_LEN_Q); 416 buff += FM10K_REGS_LEN_Q; 417 } 418 419 break; 420 default: 421 return; 422 } 423 } 424 425 /* If function above adds more registers these define need to be updated */ 426 #define FM10K_REGS_LEN_PF \ 427 (162 + (65 * FM10K_REGS_LEN_VSI) + (FM10K_MAX_QUEUES_PF * FM10K_REGS_LEN_Q)) 428 #define FM10K_REGS_LEN_VF \ 429 (11 + FM10K_REGS_LEN_VSI + (FM10K_MAX_QUEUES_POOL * FM10K_REGS_LEN_Q)) 430 431 static int fm10k_get_regs_len(struct net_device *netdev) 432 { 433 struct fm10k_intfc *interface = netdev_priv(netdev); 434 struct fm10k_hw *hw = &interface->hw; 435 436 switch (hw->mac.type) { 437 case fm10k_mac_pf: 438 return FM10K_REGS_LEN_PF * sizeof(u32); 439 case fm10k_mac_vf: 440 return FM10K_REGS_LEN_VF * sizeof(u32); 441 default: 442 return 0; 443 } 444 } 445 446 static void fm10k_get_drvinfo(struct net_device *dev, 447 struct ethtool_drvinfo *info) 448 { 449 struct fm10k_intfc *interface = netdev_priv(dev); 450 451 strncpy(info->driver, fm10k_driver_name, 452 sizeof(info->driver) - 1); 453 strncpy(info->version, fm10k_driver_version, 454 sizeof(info->version) - 1); 455 strncpy(info->bus_info, pci_name(interface->pdev), 456 sizeof(info->bus_info) - 1); 457 } 458 459 static void fm10k_get_pauseparam(struct net_device *dev, 460 struct ethtool_pauseparam *pause) 461 { 462 struct fm10k_intfc *interface = netdev_priv(dev); 463 464 /* record fixed values for autoneg and tx pause */ 465 pause->autoneg = 0; 466 pause->tx_pause = 1; 467 468 pause->rx_pause = interface->rx_pause ? 1 : 0; 469 } 470 471 static int fm10k_set_pauseparam(struct net_device *dev, 472 struct ethtool_pauseparam *pause) 473 { 474 struct fm10k_intfc *interface = netdev_priv(dev); 475 struct fm10k_hw *hw = &interface->hw; 476 477 if (pause->autoneg || !pause->tx_pause) 478 return -EINVAL; 479 480 /* we can only support pause on the PF to avoid head-of-line blocking */ 481 if (hw->mac.type == fm10k_mac_pf) 482 interface->rx_pause = pause->rx_pause ? ~0 : 0; 483 else if (pause->rx_pause) 484 return -EINVAL; 485 486 if (netif_running(dev)) 487 fm10k_update_rx_drop_en(interface); 488 489 return 0; 490 } 491 492 static u32 fm10k_get_msglevel(struct net_device *netdev) 493 { 494 struct fm10k_intfc *interface = netdev_priv(netdev); 495 496 return interface->msg_enable; 497 } 498 499 static void fm10k_set_msglevel(struct net_device *netdev, u32 data) 500 { 501 struct fm10k_intfc *interface = netdev_priv(netdev); 502 503 interface->msg_enable = data; 504 } 505 506 static void fm10k_get_ringparam(struct net_device *netdev, 507 struct ethtool_ringparam *ring) 508 { 509 struct fm10k_intfc *interface = netdev_priv(netdev); 510 511 ring->rx_max_pending = FM10K_MAX_RXD; 512 ring->tx_max_pending = FM10K_MAX_TXD; 513 ring->rx_mini_max_pending = 0; 514 ring->rx_jumbo_max_pending = 0; 515 ring->rx_pending = interface->rx_ring_count; 516 ring->tx_pending = interface->tx_ring_count; 517 ring->rx_mini_pending = 0; 518 ring->rx_jumbo_pending = 0; 519 } 520 521 static int fm10k_set_ringparam(struct net_device *netdev, 522 struct ethtool_ringparam *ring) 523 { 524 struct fm10k_intfc *interface = netdev_priv(netdev); 525 struct fm10k_ring *temp_ring; 526 int i, err = 0; 527 u32 new_rx_count, new_tx_count; 528 529 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) 530 return -EINVAL; 531 532 new_tx_count = clamp_t(u32, ring->tx_pending, 533 FM10K_MIN_TXD, FM10K_MAX_TXD); 534 new_tx_count = ALIGN(new_tx_count, FM10K_REQ_TX_DESCRIPTOR_MULTIPLE); 535 536 new_rx_count = clamp_t(u32, ring->rx_pending, 537 FM10K_MIN_RXD, FM10K_MAX_RXD); 538 new_rx_count = ALIGN(new_rx_count, FM10K_REQ_RX_DESCRIPTOR_MULTIPLE); 539 540 if ((new_tx_count == interface->tx_ring_count) && 541 (new_rx_count == interface->rx_ring_count)) { 542 /* nothing to do */ 543 return 0; 544 } 545 546 while (test_and_set_bit(__FM10K_RESETTING, interface->state)) 547 usleep_range(1000, 2000); 548 549 if (!netif_running(interface->netdev)) { 550 for (i = 0; i < interface->num_tx_queues; i++) 551 interface->tx_ring[i]->count = new_tx_count; 552 for (i = 0; i < interface->num_rx_queues; i++) 553 interface->rx_ring[i]->count = new_rx_count; 554 interface->tx_ring_count = new_tx_count; 555 interface->rx_ring_count = new_rx_count; 556 goto clear_reset; 557 } 558 559 /* allocate temporary buffer to store rings in */ 560 i = max_t(int, interface->num_tx_queues, interface->num_rx_queues); 561 temp_ring = vmalloc(array_size(i, sizeof(struct fm10k_ring))); 562 563 if (!temp_ring) { 564 err = -ENOMEM; 565 goto clear_reset; 566 } 567 568 fm10k_down(interface); 569 570 /* Setup new Tx resources and free the old Tx resources in that order. 571 * We can then assign the new resources to the rings via a memcpy. 572 * The advantage to this approach is that we are guaranteed to still 573 * have resources even in the case of an allocation failure. 574 */ 575 if (new_tx_count != interface->tx_ring_count) { 576 for (i = 0; i < interface->num_tx_queues; i++) { 577 memcpy(&temp_ring[i], interface->tx_ring[i], 578 sizeof(struct fm10k_ring)); 579 580 temp_ring[i].count = new_tx_count; 581 err = fm10k_setup_tx_resources(&temp_ring[i]); 582 if (err) { 583 while (i) { 584 i--; 585 fm10k_free_tx_resources(&temp_ring[i]); 586 } 587 goto err_setup; 588 } 589 } 590 591 for (i = 0; i < interface->num_tx_queues; i++) { 592 fm10k_free_tx_resources(interface->tx_ring[i]); 593 594 memcpy(interface->tx_ring[i], &temp_ring[i], 595 sizeof(struct fm10k_ring)); 596 } 597 598 interface->tx_ring_count = new_tx_count; 599 } 600 601 /* Repeat the process for the Rx rings if needed */ 602 if (new_rx_count != interface->rx_ring_count) { 603 for (i = 0; i < interface->num_rx_queues; i++) { 604 memcpy(&temp_ring[i], interface->rx_ring[i], 605 sizeof(struct fm10k_ring)); 606 607 temp_ring[i].count = new_rx_count; 608 err = fm10k_setup_rx_resources(&temp_ring[i]); 609 if (err) { 610 while (i) { 611 i--; 612 fm10k_free_rx_resources(&temp_ring[i]); 613 } 614 goto err_setup; 615 } 616 } 617 618 for (i = 0; i < interface->num_rx_queues; i++) { 619 fm10k_free_rx_resources(interface->rx_ring[i]); 620 621 memcpy(interface->rx_ring[i], &temp_ring[i], 622 sizeof(struct fm10k_ring)); 623 } 624 625 interface->rx_ring_count = new_rx_count; 626 } 627 628 err_setup: 629 fm10k_up(interface); 630 vfree(temp_ring); 631 clear_reset: 632 clear_bit(__FM10K_RESETTING, interface->state); 633 return err; 634 } 635 636 static int fm10k_get_coalesce(struct net_device *dev, 637 struct ethtool_coalesce *ec) 638 { 639 struct fm10k_intfc *interface = netdev_priv(dev); 640 641 ec->use_adaptive_tx_coalesce = ITR_IS_ADAPTIVE(interface->tx_itr); 642 ec->tx_coalesce_usecs = interface->tx_itr & ~FM10K_ITR_ADAPTIVE; 643 644 ec->use_adaptive_rx_coalesce = ITR_IS_ADAPTIVE(interface->rx_itr); 645 ec->rx_coalesce_usecs = interface->rx_itr & ~FM10K_ITR_ADAPTIVE; 646 647 return 0; 648 } 649 650 static int fm10k_set_coalesce(struct net_device *dev, 651 struct ethtool_coalesce *ec) 652 { 653 struct fm10k_intfc *interface = netdev_priv(dev); 654 struct fm10k_q_vector *qv; 655 u16 tx_itr, rx_itr; 656 int i; 657 658 /* verify limits */ 659 if ((ec->rx_coalesce_usecs > FM10K_ITR_MAX) || 660 (ec->tx_coalesce_usecs > FM10K_ITR_MAX)) 661 return -EINVAL; 662 663 /* record settings */ 664 tx_itr = ec->tx_coalesce_usecs; 665 rx_itr = ec->rx_coalesce_usecs; 666 667 /* set initial values for adaptive ITR */ 668 if (ec->use_adaptive_tx_coalesce) 669 tx_itr = FM10K_ITR_ADAPTIVE | FM10K_TX_ITR_DEFAULT; 670 671 if (ec->use_adaptive_rx_coalesce) 672 rx_itr = FM10K_ITR_ADAPTIVE | FM10K_RX_ITR_DEFAULT; 673 674 /* update interface */ 675 interface->tx_itr = tx_itr; 676 interface->rx_itr = rx_itr; 677 678 /* update q_vectors */ 679 for (i = 0; i < interface->num_q_vectors; i++) { 680 qv = interface->q_vector[i]; 681 qv->tx.itr = tx_itr; 682 qv->rx.itr = rx_itr; 683 } 684 685 return 0; 686 } 687 688 static int fm10k_get_rss_hash_opts(struct fm10k_intfc *interface, 689 struct ethtool_rxnfc *cmd) 690 { 691 cmd->data = 0; 692 693 /* Report default options for RSS on fm10k */ 694 switch (cmd->flow_type) { 695 case TCP_V4_FLOW: 696 case TCP_V6_FLOW: 697 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 698 /* fall through */ 699 case UDP_V4_FLOW: 700 if (test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP, 701 interface->flags)) 702 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 703 /* fall through */ 704 case SCTP_V4_FLOW: 705 case SCTP_V6_FLOW: 706 case AH_ESP_V4_FLOW: 707 case AH_ESP_V6_FLOW: 708 case AH_V4_FLOW: 709 case AH_V6_FLOW: 710 case ESP_V4_FLOW: 711 case ESP_V6_FLOW: 712 case IPV4_FLOW: 713 case IPV6_FLOW: 714 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 715 break; 716 case UDP_V6_FLOW: 717 if (test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP, 718 interface->flags)) 719 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 720 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 721 break; 722 default: 723 return -EINVAL; 724 } 725 726 return 0; 727 } 728 729 static int fm10k_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd, 730 u32 __always_unused *rule_locs) 731 { 732 struct fm10k_intfc *interface = netdev_priv(dev); 733 int ret = -EOPNOTSUPP; 734 735 switch (cmd->cmd) { 736 case ETHTOOL_GRXRINGS: 737 cmd->data = interface->num_rx_queues; 738 ret = 0; 739 break; 740 case ETHTOOL_GRXFH: 741 ret = fm10k_get_rss_hash_opts(interface, cmd); 742 break; 743 default: 744 break; 745 } 746 747 return ret; 748 } 749 750 static int fm10k_set_rss_hash_opt(struct fm10k_intfc *interface, 751 struct ethtool_rxnfc *nfc) 752 { 753 int rss_ipv4_udp = test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP, 754 interface->flags); 755 int rss_ipv6_udp = test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP, 756 interface->flags); 757 758 /* RSS does not support anything other than hashing 759 * to queues on src and dst IPs and ports 760 */ 761 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | 762 RXH_L4_B_0_1 | RXH_L4_B_2_3)) 763 return -EINVAL; 764 765 switch (nfc->flow_type) { 766 case TCP_V4_FLOW: 767 case TCP_V6_FLOW: 768 if (!(nfc->data & RXH_IP_SRC) || 769 !(nfc->data & RXH_IP_DST) || 770 !(nfc->data & RXH_L4_B_0_1) || 771 !(nfc->data & RXH_L4_B_2_3)) 772 return -EINVAL; 773 break; 774 case UDP_V4_FLOW: 775 if (!(nfc->data & RXH_IP_SRC) || 776 !(nfc->data & RXH_IP_DST)) 777 return -EINVAL; 778 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { 779 case 0: 780 clear_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP, 781 interface->flags); 782 break; 783 case (RXH_L4_B_0_1 | RXH_L4_B_2_3): 784 set_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP, 785 interface->flags); 786 break; 787 default: 788 return -EINVAL; 789 } 790 break; 791 case UDP_V6_FLOW: 792 if (!(nfc->data & RXH_IP_SRC) || 793 !(nfc->data & RXH_IP_DST)) 794 return -EINVAL; 795 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { 796 case 0: 797 clear_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP, 798 interface->flags); 799 break; 800 case (RXH_L4_B_0_1 | RXH_L4_B_2_3): 801 set_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP, 802 interface->flags); 803 break; 804 default: 805 return -EINVAL; 806 } 807 break; 808 case AH_ESP_V4_FLOW: 809 case AH_V4_FLOW: 810 case ESP_V4_FLOW: 811 case SCTP_V4_FLOW: 812 case AH_ESP_V6_FLOW: 813 case AH_V6_FLOW: 814 case ESP_V6_FLOW: 815 case SCTP_V6_FLOW: 816 if (!(nfc->data & RXH_IP_SRC) || 817 !(nfc->data & RXH_IP_DST) || 818 (nfc->data & RXH_L4_B_0_1) || 819 (nfc->data & RXH_L4_B_2_3)) 820 return -EINVAL; 821 break; 822 default: 823 return -EINVAL; 824 } 825 826 /* If something changed we need to update the MRQC register. Note that 827 * test_bit() is guaranteed to return strictly 0 or 1, so testing for 828 * equality is safe. 829 */ 830 if ((rss_ipv4_udp != test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP, 831 interface->flags)) || 832 (rss_ipv6_udp != test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP, 833 interface->flags))) { 834 struct fm10k_hw *hw = &interface->hw; 835 bool warn = false; 836 u32 mrqc; 837 838 /* Perform hash on these packet types */ 839 mrqc = FM10K_MRQC_IPV4 | 840 FM10K_MRQC_TCP_IPV4 | 841 FM10K_MRQC_IPV6 | 842 FM10K_MRQC_TCP_IPV6; 843 844 if (test_bit(FM10K_FLAG_RSS_FIELD_IPV4_UDP, 845 interface->flags)) { 846 mrqc |= FM10K_MRQC_UDP_IPV4; 847 warn = true; 848 } 849 if (test_bit(FM10K_FLAG_RSS_FIELD_IPV6_UDP, 850 interface->flags)) { 851 mrqc |= FM10K_MRQC_UDP_IPV6; 852 warn = true; 853 } 854 855 /* If we enable UDP RSS display a warning that this may cause 856 * fragmented UDP packets to arrive out of order. 857 */ 858 if (warn) 859 netif_warn(interface, drv, interface->netdev, 860 "enabling UDP RSS: fragmented packets may arrive out of order to the stack above\n"); 861 862 fm10k_write_reg(hw, FM10K_MRQC(0), mrqc); 863 } 864 865 return 0; 866 } 867 868 static int fm10k_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd) 869 { 870 struct fm10k_intfc *interface = netdev_priv(dev); 871 int ret = -EOPNOTSUPP; 872 873 switch (cmd->cmd) { 874 case ETHTOOL_SRXFH: 875 ret = fm10k_set_rss_hash_opt(interface, cmd); 876 break; 877 default: 878 break; 879 } 880 881 return ret; 882 } 883 884 static int fm10k_mbx_test(struct fm10k_intfc *interface, u64 *data) 885 { 886 struct fm10k_hw *hw = &interface->hw; 887 struct fm10k_mbx_info *mbx = &hw->mbx; 888 u32 attr_flag, test_msg[6]; 889 unsigned long timeout; 890 int err = -EINVAL; 891 892 /* For now this is a VF only feature */ 893 if (hw->mac.type != fm10k_mac_vf) 894 return 0; 895 896 /* loop through both nested and unnested attribute types */ 897 for (attr_flag = BIT(FM10K_TEST_MSG_UNSET); 898 attr_flag < BIT(2 * FM10K_TEST_MSG_NESTED); 899 attr_flag += attr_flag) { 900 /* generate message to be tested */ 901 fm10k_tlv_msg_test_create(test_msg, attr_flag); 902 903 fm10k_mbx_lock(interface); 904 mbx->test_result = FM10K_NOT_IMPLEMENTED; 905 err = mbx->ops.enqueue_tx(hw, mbx, test_msg); 906 fm10k_mbx_unlock(interface); 907 908 /* wait up to 1 second for response */ 909 timeout = jiffies + HZ; 910 do { 911 if (err < 0) 912 goto err_out; 913 914 usleep_range(500, 1000); 915 916 fm10k_mbx_lock(interface); 917 mbx->ops.process(hw, mbx); 918 fm10k_mbx_unlock(interface); 919 920 err = mbx->test_result; 921 if (!err) 922 break; 923 } while (time_is_after_jiffies(timeout)); 924 925 /* reporting errors */ 926 if (err) 927 goto err_out; 928 } 929 930 err_out: 931 *data = err < 0 ? (attr_flag) : (err > 0); 932 return err; 933 } 934 935 static void fm10k_self_test(struct net_device *dev, 936 struct ethtool_test *eth_test, u64 *data) 937 { 938 struct fm10k_intfc *interface = netdev_priv(dev); 939 struct fm10k_hw *hw = &interface->hw; 940 941 memset(data, 0, sizeof(*data) * FM10K_TEST_LEN); 942 943 if (FM10K_REMOVED(hw->hw_addr)) { 944 netif_err(interface, drv, dev, 945 "Interface removed - test blocked\n"); 946 eth_test->flags |= ETH_TEST_FL_FAILED; 947 return; 948 } 949 950 if (fm10k_mbx_test(interface, &data[FM10K_TEST_MBX])) 951 eth_test->flags |= ETH_TEST_FL_FAILED; 952 } 953 954 static u32 fm10k_get_priv_flags(struct net_device *netdev) 955 { 956 return 0; 957 } 958 959 static int fm10k_set_priv_flags(struct net_device *netdev, u32 priv_flags) 960 { 961 if (priv_flags >= BIT(FM10K_PRV_FLAG_LEN)) 962 return -EINVAL; 963 964 return 0; 965 } 966 967 static u32 fm10k_get_reta_size(struct net_device __always_unused *netdev) 968 { 969 return FM10K_RETA_SIZE * FM10K_RETA_ENTRIES_PER_REG; 970 } 971 972 void fm10k_write_reta(struct fm10k_intfc *interface, const u32 *indir) 973 { 974 u16 rss_i = interface->ring_feature[RING_F_RSS].indices; 975 struct fm10k_hw *hw = &interface->hw; 976 u32 table[4]; 977 int i, j; 978 979 /* record entries to reta table */ 980 for (i = 0; i < FM10K_RETA_SIZE; i++) { 981 u32 reta, n; 982 983 /* generate a new table if we weren't given one */ 984 for (j = 0; j < 4; j++) { 985 if (indir) 986 n = indir[4 * i + j]; 987 else 988 n = ethtool_rxfh_indir_default(4 * i + j, 989 rss_i); 990 991 table[j] = n; 992 } 993 994 reta = table[0] | 995 (table[1] << 8) | 996 (table[2] << 16) | 997 (table[3] << 24); 998 999 if (interface->reta[i] == reta) 1000 continue; 1001 1002 interface->reta[i] = reta; 1003 fm10k_write_reg(hw, FM10K_RETA(0, i), reta); 1004 } 1005 } 1006 1007 static int fm10k_get_reta(struct net_device *netdev, u32 *indir) 1008 { 1009 struct fm10k_intfc *interface = netdev_priv(netdev); 1010 int i; 1011 1012 if (!indir) 1013 return 0; 1014 1015 for (i = 0; i < FM10K_RETA_SIZE; i++, indir += 4) { 1016 u32 reta = interface->reta[i]; 1017 1018 indir[0] = (reta << 24) >> 24; 1019 indir[1] = (reta << 16) >> 24; 1020 indir[2] = (reta << 8) >> 24; 1021 indir[3] = (reta) >> 24; 1022 } 1023 1024 return 0; 1025 } 1026 1027 static int fm10k_set_reta(struct net_device *netdev, const u32 *indir) 1028 { 1029 struct fm10k_intfc *interface = netdev_priv(netdev); 1030 int i; 1031 u16 rss_i; 1032 1033 if (!indir) 1034 return 0; 1035 1036 /* Verify user input. */ 1037 rss_i = interface->ring_feature[RING_F_RSS].indices; 1038 for (i = fm10k_get_reta_size(netdev); i--;) { 1039 if (indir[i] < rss_i) 1040 continue; 1041 return -EINVAL; 1042 } 1043 1044 fm10k_write_reta(interface, indir); 1045 1046 return 0; 1047 } 1048 1049 static u32 fm10k_get_rssrk_size(struct net_device __always_unused *netdev) 1050 { 1051 return FM10K_RSSRK_SIZE * FM10K_RSSRK_ENTRIES_PER_REG; 1052 } 1053 1054 static int fm10k_get_rssh(struct net_device *netdev, u32 *indir, u8 *key, 1055 u8 *hfunc) 1056 { 1057 struct fm10k_intfc *interface = netdev_priv(netdev); 1058 int i, err; 1059 1060 if (hfunc) 1061 *hfunc = ETH_RSS_HASH_TOP; 1062 1063 err = fm10k_get_reta(netdev, indir); 1064 if (err || !key) 1065 return err; 1066 1067 for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4) 1068 *(__le32 *)key = cpu_to_le32(interface->rssrk[i]); 1069 1070 return 0; 1071 } 1072 1073 static int fm10k_set_rssh(struct net_device *netdev, const u32 *indir, 1074 const u8 *key, const u8 hfunc) 1075 { 1076 struct fm10k_intfc *interface = netdev_priv(netdev); 1077 struct fm10k_hw *hw = &interface->hw; 1078 int i, err; 1079 1080 /* We do not allow change in unsupported parameters */ 1081 if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) 1082 return -EOPNOTSUPP; 1083 1084 err = fm10k_set_reta(netdev, indir); 1085 if (err || !key) 1086 return err; 1087 1088 for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4) { 1089 u32 rssrk = le32_to_cpu(*(__le32 *)key); 1090 1091 if (interface->rssrk[i] == rssrk) 1092 continue; 1093 1094 interface->rssrk[i] = rssrk; 1095 fm10k_write_reg(hw, FM10K_RSSRK(0, i), rssrk); 1096 } 1097 1098 return 0; 1099 } 1100 1101 static unsigned int fm10k_max_channels(struct net_device *dev) 1102 { 1103 struct fm10k_intfc *interface = netdev_priv(dev); 1104 unsigned int max_combined = interface->hw.mac.max_queues; 1105 u8 tcs = netdev_get_num_tc(dev); 1106 1107 /* For QoS report channels per traffic class */ 1108 if (tcs > 1) 1109 max_combined = BIT((fls(max_combined / tcs) - 1)); 1110 1111 return max_combined; 1112 } 1113 1114 static void fm10k_get_channels(struct net_device *dev, 1115 struct ethtool_channels *ch) 1116 { 1117 struct fm10k_intfc *interface = netdev_priv(dev); 1118 struct fm10k_hw *hw = &interface->hw; 1119 1120 /* report maximum channels */ 1121 ch->max_combined = fm10k_max_channels(dev); 1122 1123 /* report info for other vector */ 1124 ch->max_other = NON_Q_VECTORS(hw); 1125 ch->other_count = ch->max_other; 1126 1127 /* record RSS queues */ 1128 ch->combined_count = interface->ring_feature[RING_F_RSS].indices; 1129 } 1130 1131 static int fm10k_set_channels(struct net_device *dev, 1132 struct ethtool_channels *ch) 1133 { 1134 struct fm10k_intfc *interface = netdev_priv(dev); 1135 unsigned int count = ch->combined_count; 1136 struct fm10k_hw *hw = &interface->hw; 1137 1138 /* verify they are not requesting separate vectors */ 1139 if (!count || ch->rx_count || ch->tx_count) 1140 return -EINVAL; 1141 1142 /* verify other_count has not changed */ 1143 if (ch->other_count != NON_Q_VECTORS(hw)) 1144 return -EINVAL; 1145 1146 /* verify the number of channels does not exceed hardware limits */ 1147 if (count > fm10k_max_channels(dev)) 1148 return -EINVAL; 1149 1150 interface->ring_feature[RING_F_RSS].limit = count; 1151 1152 /* use setup TC to update any traffic class queue mapping */ 1153 return fm10k_setup_tc(dev, netdev_get_num_tc(dev)); 1154 } 1155 1156 static const struct ethtool_ops fm10k_ethtool_ops = { 1157 .get_strings = fm10k_get_strings, 1158 .get_sset_count = fm10k_get_sset_count, 1159 .get_ethtool_stats = fm10k_get_ethtool_stats, 1160 .get_drvinfo = fm10k_get_drvinfo, 1161 .get_link = ethtool_op_get_link, 1162 .get_pauseparam = fm10k_get_pauseparam, 1163 .set_pauseparam = fm10k_set_pauseparam, 1164 .get_msglevel = fm10k_get_msglevel, 1165 .set_msglevel = fm10k_set_msglevel, 1166 .get_ringparam = fm10k_get_ringparam, 1167 .set_ringparam = fm10k_set_ringparam, 1168 .get_coalesce = fm10k_get_coalesce, 1169 .set_coalesce = fm10k_set_coalesce, 1170 .get_rxnfc = fm10k_get_rxnfc, 1171 .set_rxnfc = fm10k_set_rxnfc, 1172 .get_regs = fm10k_get_regs, 1173 .get_regs_len = fm10k_get_regs_len, 1174 .self_test = fm10k_self_test, 1175 .get_priv_flags = fm10k_get_priv_flags, 1176 .set_priv_flags = fm10k_set_priv_flags, 1177 .get_rxfh_indir_size = fm10k_get_reta_size, 1178 .get_rxfh_key_size = fm10k_get_rssrk_size, 1179 .get_rxfh = fm10k_get_rssh, 1180 .set_rxfh = fm10k_set_rssh, 1181 .get_channels = fm10k_get_channels, 1182 .set_channels = fm10k_set_channels, 1183 .get_ts_info = ethtool_op_get_ts_info, 1184 }; 1185 1186 void fm10k_set_ethtool_ops(struct net_device *dev) 1187 { 1188 dev->ethtool_ops = &fm10k_ethtool_ops; 1189 } 1190