1 /**************************************************************************** 2 * Driver for Solarflare network controllers and boards 3 * Copyright 2015 Solarflare Communications Inc. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 as published 7 * by the Free Software Foundation, incorporated herein by reference. 8 */ 9 #include <linux/etherdevice.h> 10 #include <linux/pci.h> 11 #include <linux/module.h> 12 #include "net_driver.h" 13 #include "ef10_sriov.h" 14 #include "efx.h" 15 #include "nic.h" 16 #include "mcdi_pcol.h" 17 18 static int efx_ef10_evb_port_assign(struct efx_nic *efx, unsigned int port_id, 19 unsigned int vf_fn) 20 { 21 MCDI_DECLARE_BUF(inbuf, MC_CMD_EVB_PORT_ASSIGN_IN_LEN); 22 struct efx_ef10_nic_data *nic_data = efx->nic_data; 23 24 MCDI_SET_DWORD(inbuf, EVB_PORT_ASSIGN_IN_PORT_ID, port_id); 25 MCDI_POPULATE_DWORD_2(inbuf, EVB_PORT_ASSIGN_IN_FUNCTION, 26 EVB_PORT_ASSIGN_IN_PF, nic_data->pf_index, 27 EVB_PORT_ASSIGN_IN_VF, vf_fn); 28 29 return efx_mcdi_rpc(efx, MC_CMD_EVB_PORT_ASSIGN, inbuf, sizeof(inbuf), 30 NULL, 0, NULL); 31 } 32 33 static int efx_ef10_vswitch_alloc(struct efx_nic *efx, unsigned int port_id, 34 unsigned int vswitch_type) 35 { 36 MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_ALLOC_IN_LEN); 37 int rc; 38 39 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_UPSTREAM_PORT_ID, port_id); 40 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_TYPE, vswitch_type); 41 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 2); 42 MCDI_POPULATE_DWORD_1(inbuf, VSWITCH_ALLOC_IN_FLAGS, 43 VSWITCH_ALLOC_IN_FLAG_AUTO_PORT, 0); 44 45 /* Quietly try to allocate 2 VLAN tags */ 46 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_VSWITCH_ALLOC, inbuf, sizeof(inbuf), 47 NULL, 0, NULL); 48 49 /* If 2 VLAN tags is too many, revert to trying with 1 VLAN tags */ 50 if (rc == -EPROTO) { 51 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 1); 52 rc = efx_mcdi_rpc(efx, MC_CMD_VSWITCH_ALLOC, inbuf, 53 sizeof(inbuf), NULL, 0, NULL); 54 } else if (rc) { 55 efx_mcdi_display_error(efx, MC_CMD_VSWITCH_ALLOC, 56 MC_CMD_VSWITCH_ALLOC_IN_LEN, 57 NULL, 0, rc); 58 } 59 return rc; 60 } 61 62 static int efx_ef10_vswitch_free(struct efx_nic *efx, unsigned int port_id) 63 { 64 MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_FREE_IN_LEN); 65 66 MCDI_SET_DWORD(inbuf, VSWITCH_FREE_IN_UPSTREAM_PORT_ID, port_id); 67 68 return efx_mcdi_rpc(efx, MC_CMD_VSWITCH_FREE, inbuf, sizeof(inbuf), 69 NULL, 0, NULL); 70 } 71 72 static int efx_ef10_vport_alloc(struct efx_nic *efx, 73 unsigned int port_id_in, 74 unsigned int vport_type, 75 u16 vlan, 76 unsigned int *port_id_out) 77 { 78 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_ALLOC_IN_LEN); 79 MCDI_DECLARE_BUF(outbuf, MC_CMD_VPORT_ALLOC_OUT_LEN); 80 size_t outlen; 81 int rc; 82 83 EFX_WARN_ON_PARANOID(!port_id_out); 84 85 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_UPSTREAM_PORT_ID, port_id_in); 86 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_TYPE, vport_type); 87 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_NUM_VLAN_TAGS, 88 (vlan != EFX_EF10_NO_VLAN)); 89 MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_FLAGS, 90 VPORT_ALLOC_IN_FLAG_AUTO_PORT, 0); 91 if (vlan != EFX_EF10_NO_VLAN) 92 MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_VLAN_TAGS, 93 VPORT_ALLOC_IN_VLAN_TAG_0, vlan); 94 95 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_ALLOC, inbuf, sizeof(inbuf), 96 outbuf, sizeof(outbuf), &outlen); 97 if (rc) 98 return rc; 99 if (outlen < MC_CMD_VPORT_ALLOC_OUT_LEN) 100 return -EIO; 101 102 *port_id_out = MCDI_DWORD(outbuf, VPORT_ALLOC_OUT_VPORT_ID); 103 return 0; 104 } 105 106 static int efx_ef10_vport_free(struct efx_nic *efx, unsigned int port_id) 107 { 108 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_FREE_IN_LEN); 109 110 MCDI_SET_DWORD(inbuf, VPORT_FREE_IN_VPORT_ID, port_id); 111 112 return efx_mcdi_rpc(efx, MC_CMD_VPORT_FREE, inbuf, sizeof(inbuf), 113 NULL, 0, NULL); 114 } 115 116 static void efx_ef10_sriov_free_vf_vports(struct efx_nic *efx) 117 { 118 struct efx_ef10_nic_data *nic_data = efx->nic_data; 119 int i; 120 121 if (!nic_data->vf) 122 return; 123 124 for (i = 0; i < efx->vf_count; i++) { 125 struct ef10_vf *vf = nic_data->vf + i; 126 127 /* If VF is assigned, do not free the vport */ 128 if (vf->pci_dev && 129 vf->pci_dev->dev_flags & PCI_DEV_FLAGS_ASSIGNED) 130 continue; 131 132 if (vf->vport_assigned) { 133 efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, i); 134 vf->vport_assigned = 0; 135 } 136 137 if (!is_zero_ether_addr(vf->mac)) { 138 efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac); 139 eth_zero_addr(vf->mac); 140 } 141 142 if (vf->vport_id) { 143 efx_ef10_vport_free(efx, vf->vport_id); 144 vf->vport_id = 0; 145 } 146 147 vf->efx = NULL; 148 } 149 } 150 151 static void efx_ef10_sriov_free_vf_vswitching(struct efx_nic *efx) 152 { 153 struct efx_ef10_nic_data *nic_data = efx->nic_data; 154 155 efx_ef10_sriov_free_vf_vports(efx); 156 kfree(nic_data->vf); 157 nic_data->vf = NULL; 158 } 159 160 static int efx_ef10_sriov_assign_vf_vport(struct efx_nic *efx, 161 unsigned int vf_i) 162 { 163 struct efx_ef10_nic_data *nic_data = efx->nic_data; 164 struct ef10_vf *vf = nic_data->vf + vf_i; 165 int rc; 166 167 if (WARN_ON_ONCE(!nic_data->vf)) 168 return -EOPNOTSUPP; 169 170 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED, 171 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL, 172 vf->vlan, &vf->vport_id); 173 if (rc) 174 return rc; 175 176 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac); 177 if (rc) { 178 eth_zero_addr(vf->mac); 179 return rc; 180 } 181 182 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i); 183 if (rc) 184 return rc; 185 186 vf->vport_assigned = 1; 187 return 0; 188 } 189 190 static int efx_ef10_sriov_alloc_vf_vswitching(struct efx_nic *efx) 191 { 192 struct efx_ef10_nic_data *nic_data = efx->nic_data; 193 unsigned int i; 194 int rc; 195 196 nic_data->vf = kcalloc(efx->vf_count, sizeof(struct ef10_vf), 197 GFP_KERNEL); 198 if (!nic_data->vf) 199 return -ENOMEM; 200 201 for (i = 0; i < efx->vf_count; i++) { 202 eth_random_addr(nic_data->vf[i].mac); 203 nic_data->vf[i].efx = NULL; 204 nic_data->vf[i].vlan = EFX_EF10_NO_VLAN; 205 206 rc = efx_ef10_sriov_assign_vf_vport(efx, i); 207 if (rc) 208 goto fail; 209 } 210 211 return 0; 212 fail: 213 efx_ef10_sriov_free_vf_vports(efx); 214 kfree(nic_data->vf); 215 nic_data->vf = NULL; 216 return rc; 217 } 218 219 static int efx_ef10_sriov_restore_vf_vswitching(struct efx_nic *efx) 220 { 221 unsigned int i; 222 int rc; 223 224 for (i = 0; i < efx->vf_count; i++) { 225 rc = efx_ef10_sriov_assign_vf_vport(efx, i); 226 if (rc) 227 goto fail; 228 } 229 230 return 0; 231 fail: 232 efx_ef10_sriov_free_vf_vswitching(efx); 233 return rc; 234 } 235 236 static int efx_ef10_vadaptor_alloc_set_features(struct efx_nic *efx) 237 { 238 struct efx_ef10_nic_data *nic_data = efx->nic_data; 239 u32 port_flags; 240 int rc; 241 242 rc = efx_ef10_vadaptor_alloc(efx, nic_data->vport_id); 243 if (rc) 244 goto fail_vadaptor_alloc; 245 246 rc = efx_ef10_vadaptor_query(efx, nic_data->vport_id, 247 &port_flags, NULL, NULL); 248 if (rc) 249 goto fail_vadaptor_query; 250 251 if (port_flags & 252 (1 << MC_CMD_VPORT_ALLOC_IN_FLAG_VLAN_RESTRICT_LBN)) 253 efx->fixed_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 254 else 255 efx->fixed_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 256 257 return 0; 258 259 fail_vadaptor_query: 260 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); 261 fail_vadaptor_alloc: 262 return rc; 263 } 264 265 /* On top of the default firmware vswitch setup, create a VEB vswitch and 266 * expansion vport for use by this function. 267 */ 268 int efx_ef10_vswitching_probe_pf(struct efx_nic *efx) 269 { 270 struct efx_ef10_nic_data *nic_data = efx->nic_data; 271 struct net_device *net_dev = efx->net_dev; 272 int rc; 273 274 if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0) { 275 /* vswitch not needed as we have no VFs */ 276 efx_ef10_vadaptor_alloc_set_features(efx); 277 return 0; 278 } 279 280 rc = efx_ef10_vswitch_alloc(efx, EVB_PORT_ID_ASSIGNED, 281 MC_CMD_VSWITCH_ALLOC_IN_VSWITCH_TYPE_VEB); 282 if (rc) 283 goto fail1; 284 285 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED, 286 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL, 287 EFX_EF10_NO_VLAN, &nic_data->vport_id); 288 if (rc) 289 goto fail2; 290 291 rc = efx_ef10_vport_add_mac(efx, nic_data->vport_id, net_dev->dev_addr); 292 if (rc) 293 goto fail3; 294 ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr); 295 296 rc = efx_ef10_vadaptor_alloc_set_features(efx); 297 if (rc) 298 goto fail4; 299 300 return 0; 301 fail4: 302 efx_ef10_vport_del_mac(efx, nic_data->vport_id, nic_data->vport_mac); 303 eth_zero_addr(nic_data->vport_mac); 304 fail3: 305 efx_ef10_vport_free(efx, nic_data->vport_id); 306 nic_data->vport_id = EVB_PORT_ID_ASSIGNED; 307 fail2: 308 efx_ef10_vswitch_free(efx, EVB_PORT_ID_ASSIGNED); 309 fail1: 310 return rc; 311 } 312 313 int efx_ef10_vswitching_probe_vf(struct efx_nic *efx) 314 { 315 return efx_ef10_vadaptor_alloc_set_features(efx); 316 } 317 318 int efx_ef10_vswitching_restore_pf(struct efx_nic *efx) 319 { 320 struct efx_ef10_nic_data *nic_data = efx->nic_data; 321 int rc; 322 323 if (!nic_data->must_probe_vswitching) 324 return 0; 325 326 rc = efx_ef10_vswitching_probe_pf(efx); 327 if (rc) 328 goto fail; 329 330 rc = efx_ef10_sriov_restore_vf_vswitching(efx); 331 if (rc) 332 goto fail; 333 334 nic_data->must_probe_vswitching = false; 335 fail: 336 return rc; 337 } 338 339 int efx_ef10_vswitching_restore_vf(struct efx_nic *efx) 340 { 341 struct efx_ef10_nic_data *nic_data = efx->nic_data; 342 int rc; 343 344 if (!nic_data->must_probe_vswitching) 345 return 0; 346 347 rc = efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); 348 if (rc) 349 return rc; 350 351 nic_data->must_probe_vswitching = false; 352 return 0; 353 } 354 355 void efx_ef10_vswitching_remove_pf(struct efx_nic *efx) 356 { 357 struct efx_ef10_nic_data *nic_data = efx->nic_data; 358 359 efx_ef10_sriov_free_vf_vswitching(efx); 360 361 efx_ef10_vadaptor_free(efx, nic_data->vport_id); 362 363 if (nic_data->vport_id == EVB_PORT_ID_ASSIGNED) 364 return; /* No vswitch was ever created */ 365 366 if (!is_zero_ether_addr(nic_data->vport_mac)) { 367 efx_ef10_vport_del_mac(efx, nic_data->vport_id, 368 efx->net_dev->dev_addr); 369 eth_zero_addr(nic_data->vport_mac); 370 } 371 efx_ef10_vport_free(efx, nic_data->vport_id); 372 nic_data->vport_id = EVB_PORT_ID_ASSIGNED; 373 374 /* Only free the vswitch if no VFs are assigned */ 375 if (!pci_vfs_assigned(efx->pci_dev)) 376 efx_ef10_vswitch_free(efx, nic_data->vport_id); 377 } 378 379 void efx_ef10_vswitching_remove_vf(struct efx_nic *efx) 380 { 381 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); 382 } 383 384 static int efx_ef10_pci_sriov_enable(struct efx_nic *efx, int num_vfs) 385 { 386 int rc = 0; 387 struct pci_dev *dev = efx->pci_dev; 388 389 efx->vf_count = num_vfs; 390 391 rc = efx_ef10_sriov_alloc_vf_vswitching(efx); 392 if (rc) 393 goto fail1; 394 395 rc = pci_enable_sriov(dev, num_vfs); 396 if (rc) 397 goto fail2; 398 399 return 0; 400 fail2: 401 efx_ef10_sriov_free_vf_vswitching(efx); 402 fail1: 403 efx->vf_count = 0; 404 netif_err(efx, probe, efx->net_dev, 405 "Failed to enable SRIOV VFs\n"); 406 return rc; 407 } 408 409 static int efx_ef10_pci_sriov_disable(struct efx_nic *efx, bool force) 410 { 411 struct pci_dev *dev = efx->pci_dev; 412 unsigned int vfs_assigned = 0; 413 414 vfs_assigned = pci_vfs_assigned(dev); 415 416 if (vfs_assigned && !force) { 417 netif_info(efx, drv, efx->net_dev, "VFs are assigned to guests; " 418 "please detach them before disabling SR-IOV\n"); 419 return -EBUSY; 420 } 421 422 if (!vfs_assigned) 423 pci_disable_sriov(dev); 424 425 efx_ef10_sriov_free_vf_vswitching(efx); 426 efx->vf_count = 0; 427 return 0; 428 } 429 430 int efx_ef10_sriov_configure(struct efx_nic *efx, int num_vfs) 431 { 432 if (num_vfs == 0) 433 return efx_ef10_pci_sriov_disable(efx, false); 434 else 435 return efx_ef10_pci_sriov_enable(efx, num_vfs); 436 } 437 438 int efx_ef10_sriov_init(struct efx_nic *efx) 439 { 440 return 0; 441 } 442 443 void efx_ef10_sriov_fini(struct efx_nic *efx) 444 { 445 struct efx_ef10_nic_data *nic_data = efx->nic_data; 446 unsigned int i; 447 int rc; 448 449 if (!nic_data->vf) { 450 /* Remove any un-assigned orphaned VFs */ 451 if (pci_num_vf(efx->pci_dev) && !pci_vfs_assigned(efx->pci_dev)) 452 pci_disable_sriov(efx->pci_dev); 453 return; 454 } 455 456 /* Remove any VFs in the host */ 457 for (i = 0; i < efx->vf_count; ++i) { 458 struct efx_nic *vf_efx = nic_data->vf[i].efx; 459 460 if (vf_efx) 461 vf_efx->pci_dev->driver->remove(vf_efx->pci_dev); 462 } 463 464 rc = efx_ef10_pci_sriov_disable(efx, true); 465 if (rc) 466 netif_dbg(efx, drv, efx->net_dev, 467 "Disabling SRIOV was not successful rc=%d\n", rc); 468 else 469 netif_dbg(efx, drv, efx->net_dev, "SRIOV disabled\n"); 470 } 471 472 static int efx_ef10_vport_del_vf_mac(struct efx_nic *efx, unsigned int port_id, 473 u8 *mac) 474 { 475 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_DEL_MAC_ADDRESS_IN_LEN); 476 MCDI_DECLARE_BUF_ERR(outbuf); 477 size_t outlen; 478 int rc; 479 480 MCDI_SET_DWORD(inbuf, VPORT_DEL_MAC_ADDRESS_IN_VPORT_ID, port_id); 481 ether_addr_copy(MCDI_PTR(inbuf, VPORT_DEL_MAC_ADDRESS_IN_MACADDR), mac); 482 483 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_DEL_MAC_ADDRESS, inbuf, 484 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen); 485 486 return rc; 487 } 488 489 int efx_ef10_sriov_set_vf_mac(struct efx_nic *efx, int vf_i, u8 *mac) 490 { 491 struct efx_ef10_nic_data *nic_data = efx->nic_data; 492 struct ef10_vf *vf; 493 int rc; 494 495 if (!nic_data->vf) 496 return -EOPNOTSUPP; 497 498 if (vf_i >= efx->vf_count) 499 return -EINVAL; 500 vf = nic_data->vf + vf_i; 501 502 if (vf->efx) { 503 efx_device_detach_sync(vf->efx); 504 efx_net_stop(vf->efx->net_dev); 505 506 down_write(&vf->efx->filter_sem); 507 vf->efx->type->filter_table_remove(vf->efx); 508 509 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED); 510 if (rc) { 511 up_write(&vf->efx->filter_sem); 512 return rc; 513 } 514 } 515 516 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i); 517 if (rc) 518 return rc; 519 520 if (!is_zero_ether_addr(vf->mac)) { 521 rc = efx_ef10_vport_del_vf_mac(efx, vf->vport_id, vf->mac); 522 if (rc) 523 return rc; 524 } 525 526 if (!is_zero_ether_addr(mac)) { 527 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, mac); 528 if (rc) { 529 eth_zero_addr(vf->mac); 530 goto fail; 531 } 532 if (vf->efx) 533 ether_addr_copy(vf->efx->net_dev->dev_addr, mac); 534 } 535 536 ether_addr_copy(vf->mac, mac); 537 538 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i); 539 if (rc) 540 goto fail; 541 542 if (vf->efx) { 543 /* VF cannot use the vport_id that the PF created */ 544 rc = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED); 545 if (rc) { 546 up_write(&vf->efx->filter_sem); 547 return rc; 548 } 549 vf->efx->type->filter_table_probe(vf->efx); 550 up_write(&vf->efx->filter_sem); 551 efx_net_open(vf->efx->net_dev); 552 efx_device_attach_if_not_resetting(vf->efx); 553 } 554 555 return 0; 556 557 fail: 558 eth_zero_addr(vf->mac); 559 return rc; 560 } 561 562 int efx_ef10_sriov_set_vf_vlan(struct efx_nic *efx, int vf_i, u16 vlan, 563 u8 qos) 564 { 565 struct efx_ef10_nic_data *nic_data = efx->nic_data; 566 struct ef10_vf *vf; 567 u16 new_vlan; 568 int rc = 0, rc2 = 0; 569 570 if (vf_i >= efx->vf_count) 571 return -EINVAL; 572 if (qos != 0) 573 return -EINVAL; 574 575 vf = nic_data->vf + vf_i; 576 577 new_vlan = (vlan == 0) ? EFX_EF10_NO_VLAN : vlan; 578 if (new_vlan == vf->vlan) 579 return 0; 580 581 if (vf->efx) { 582 efx_device_detach_sync(vf->efx); 583 efx_net_stop(vf->efx->net_dev); 584 585 mutex_lock(&vf->efx->mac_lock); 586 down_write(&vf->efx->filter_sem); 587 vf->efx->type->filter_table_remove(vf->efx); 588 589 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED); 590 if (rc) 591 goto restore_filters; 592 } 593 594 if (vf->vport_assigned) { 595 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i); 596 if (rc) { 597 netif_warn(efx, drv, efx->net_dev, 598 "Failed to change vlan on VF %d.\n", vf_i); 599 netif_warn(efx, drv, efx->net_dev, 600 "This is likely because the VF is bound to a driver in a VM.\n"); 601 netif_warn(efx, drv, efx->net_dev, 602 "Please unload the driver in the VM.\n"); 603 goto restore_vadaptor; 604 } 605 vf->vport_assigned = 0; 606 } 607 608 if (!is_zero_ether_addr(vf->mac)) { 609 rc = efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac); 610 if (rc) 611 goto restore_evb_port; 612 } 613 614 if (vf->vport_id) { 615 rc = efx_ef10_vport_free(efx, vf->vport_id); 616 if (rc) 617 goto restore_mac; 618 vf->vport_id = 0; 619 } 620 621 /* Do the actual vlan change */ 622 vf->vlan = new_vlan; 623 624 /* Restore everything in reverse order */ 625 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED, 626 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL, 627 vf->vlan, &vf->vport_id); 628 if (rc) 629 goto reset_nic_up_write; 630 631 restore_mac: 632 if (!is_zero_ether_addr(vf->mac)) { 633 rc2 = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac); 634 if (rc2) { 635 eth_zero_addr(vf->mac); 636 goto reset_nic_up_write; 637 } 638 } 639 640 restore_evb_port: 641 rc2 = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i); 642 if (rc2) 643 goto reset_nic_up_write; 644 else 645 vf->vport_assigned = 1; 646 647 restore_vadaptor: 648 if (vf->efx) { 649 rc2 = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED); 650 if (rc2) 651 goto reset_nic_up_write; 652 } 653 654 restore_filters: 655 if (vf->efx) { 656 rc2 = vf->efx->type->filter_table_probe(vf->efx); 657 if (rc2) 658 goto reset_nic_up_write; 659 660 up_write(&vf->efx->filter_sem); 661 mutex_unlock(&vf->efx->mac_lock); 662 663 rc2 = efx_net_open(vf->efx->net_dev); 664 if (rc2) 665 goto reset_nic; 666 667 efx_device_attach_if_not_resetting(vf->efx); 668 } 669 return rc; 670 671 reset_nic_up_write: 672 if (vf->efx) { 673 up_write(&vf->efx->filter_sem); 674 mutex_unlock(&vf->efx->mac_lock); 675 } 676 reset_nic: 677 if (vf->efx) { 678 netif_err(efx, drv, efx->net_dev, 679 "Failed to restore VF - scheduling reset.\n"); 680 efx_schedule_reset(vf->efx, RESET_TYPE_DATAPATH); 681 } else { 682 netif_err(efx, drv, efx->net_dev, 683 "Failed to restore the VF and cannot reset the VF " 684 "- VF is not functional.\n"); 685 netif_err(efx, drv, efx->net_dev, 686 "Please reload the driver attached to the VF.\n"); 687 } 688 689 return rc ? rc : rc2; 690 } 691 692 int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i, 693 bool spoofchk) 694 { 695 return spoofchk ? -EOPNOTSUPP : 0; 696 } 697 698 int efx_ef10_sriov_set_vf_link_state(struct efx_nic *efx, int vf_i, 699 int link_state) 700 { 701 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN); 702 struct efx_ef10_nic_data *nic_data = efx->nic_data; 703 704 BUILD_BUG_ON(IFLA_VF_LINK_STATE_AUTO != 705 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_AUTO); 706 BUILD_BUG_ON(IFLA_VF_LINK_STATE_ENABLE != 707 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_UP); 708 BUILD_BUG_ON(IFLA_VF_LINK_STATE_DISABLE != 709 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_DOWN); 710 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION, 711 LINK_STATE_MODE_IN_FUNCTION_PF, 712 nic_data->pf_index, 713 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i); 714 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, link_state); 715 return efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf), 716 NULL, 0, NULL); /* don't care what old mode was */ 717 } 718 719 int efx_ef10_sriov_get_vf_config(struct efx_nic *efx, int vf_i, 720 struct ifla_vf_info *ivf) 721 { 722 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN); 723 MCDI_DECLARE_BUF(outbuf, MC_CMD_LINK_STATE_MODE_OUT_LEN); 724 725 struct efx_ef10_nic_data *nic_data = efx->nic_data; 726 struct ef10_vf *vf; 727 size_t outlen; 728 int rc; 729 730 if (vf_i >= efx->vf_count) 731 return -EINVAL; 732 733 if (!nic_data->vf) 734 return -EOPNOTSUPP; 735 736 vf = nic_data->vf + vf_i; 737 738 ivf->vf = vf_i; 739 ivf->min_tx_rate = 0; 740 ivf->max_tx_rate = 0; 741 ether_addr_copy(ivf->mac, vf->mac); 742 ivf->vlan = (vf->vlan == EFX_EF10_NO_VLAN) ? 0 : vf->vlan; 743 ivf->qos = 0; 744 745 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION, 746 LINK_STATE_MODE_IN_FUNCTION_PF, 747 nic_data->pf_index, 748 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i); 749 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, 750 MC_CMD_LINK_STATE_MODE_IN_DO_NOT_CHANGE); 751 rc = efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf), 752 outbuf, sizeof(outbuf), &outlen); 753 if (rc) 754 return rc; 755 if (outlen < MC_CMD_LINK_STATE_MODE_OUT_LEN) 756 return -EIO; 757 ivf->linkstate = MCDI_DWORD(outbuf, LINK_STATE_MODE_OUT_OLD_MODE); 758 759 return 0; 760 } 761