1 // SPDX-License-Identifier: GPL-2.0-only 2 /**************************************************************************** 3 * Driver for Solarflare network controllers and boards 4 * Copyright 2015 Solarflare Communications Inc. 5 */ 6 #include <linux/etherdevice.h> 7 #include <linux/pci.h> 8 #include <linux/module.h> 9 #include "net_driver.h" 10 #include "ef10_sriov.h" 11 #include "efx.h" 12 #include "nic.h" 13 #include "mcdi_pcol.h" 14 15 static int efx_ef10_evb_port_assign(struct efx_nic *efx, unsigned int port_id, 16 unsigned int vf_fn) 17 { 18 MCDI_DECLARE_BUF(inbuf, MC_CMD_EVB_PORT_ASSIGN_IN_LEN); 19 struct efx_ef10_nic_data *nic_data = efx->nic_data; 20 21 MCDI_SET_DWORD(inbuf, EVB_PORT_ASSIGN_IN_PORT_ID, port_id); 22 MCDI_POPULATE_DWORD_2(inbuf, EVB_PORT_ASSIGN_IN_FUNCTION, 23 EVB_PORT_ASSIGN_IN_PF, nic_data->pf_index, 24 EVB_PORT_ASSIGN_IN_VF, vf_fn); 25 26 return efx_mcdi_rpc(efx, MC_CMD_EVB_PORT_ASSIGN, inbuf, sizeof(inbuf), 27 NULL, 0, NULL); 28 } 29 30 static int efx_ef10_vswitch_alloc(struct efx_nic *efx, unsigned int port_id, 31 unsigned int vswitch_type) 32 { 33 MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_ALLOC_IN_LEN); 34 int rc; 35 36 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_UPSTREAM_PORT_ID, port_id); 37 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_TYPE, vswitch_type); 38 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 2); 39 MCDI_POPULATE_DWORD_1(inbuf, VSWITCH_ALLOC_IN_FLAGS, 40 VSWITCH_ALLOC_IN_FLAG_AUTO_PORT, 0); 41 42 /* Quietly try to allocate 2 VLAN tags */ 43 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_VSWITCH_ALLOC, inbuf, sizeof(inbuf), 44 NULL, 0, NULL); 45 46 /* If 2 VLAN tags is too many, revert to trying with 1 VLAN tags */ 47 if (rc == -EPROTO) { 48 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 1); 49 rc = efx_mcdi_rpc(efx, MC_CMD_VSWITCH_ALLOC, inbuf, 50 sizeof(inbuf), NULL, 0, NULL); 51 } else if (rc) { 52 efx_mcdi_display_error(efx, MC_CMD_VSWITCH_ALLOC, 53 MC_CMD_VSWITCH_ALLOC_IN_LEN, 54 NULL, 0, rc); 55 } 56 return rc; 57 } 58 59 static int efx_ef10_vswitch_free(struct efx_nic *efx, unsigned int port_id) 60 { 61 MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_FREE_IN_LEN); 62 63 MCDI_SET_DWORD(inbuf, VSWITCH_FREE_IN_UPSTREAM_PORT_ID, port_id); 64 65 return efx_mcdi_rpc(efx, MC_CMD_VSWITCH_FREE, inbuf, sizeof(inbuf), 66 NULL, 0, NULL); 67 } 68 69 static int efx_ef10_vport_alloc(struct efx_nic *efx, 70 unsigned int port_id_in, 71 unsigned int vport_type, 72 u16 vlan, 73 unsigned int *port_id_out) 74 { 75 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_ALLOC_IN_LEN); 76 MCDI_DECLARE_BUF(outbuf, MC_CMD_VPORT_ALLOC_OUT_LEN); 77 size_t outlen; 78 int rc; 79 80 EFX_WARN_ON_PARANOID(!port_id_out); 81 82 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_UPSTREAM_PORT_ID, port_id_in); 83 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_TYPE, vport_type); 84 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_NUM_VLAN_TAGS, 85 (vlan != EFX_EF10_NO_VLAN)); 86 MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_FLAGS, 87 VPORT_ALLOC_IN_FLAG_AUTO_PORT, 0); 88 if (vlan != EFX_EF10_NO_VLAN) 89 MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_VLAN_TAGS, 90 VPORT_ALLOC_IN_VLAN_TAG_0, vlan); 91 92 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_ALLOC, inbuf, sizeof(inbuf), 93 outbuf, sizeof(outbuf), &outlen); 94 if (rc) 95 return rc; 96 if (outlen < MC_CMD_VPORT_ALLOC_OUT_LEN) 97 return -EIO; 98 99 *port_id_out = MCDI_DWORD(outbuf, VPORT_ALLOC_OUT_VPORT_ID); 100 return 0; 101 } 102 103 static int efx_ef10_vport_free(struct efx_nic *efx, unsigned int port_id) 104 { 105 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_FREE_IN_LEN); 106 107 MCDI_SET_DWORD(inbuf, VPORT_FREE_IN_VPORT_ID, port_id); 108 109 return efx_mcdi_rpc(efx, MC_CMD_VPORT_FREE, inbuf, sizeof(inbuf), 110 NULL, 0, NULL); 111 } 112 113 static void efx_ef10_sriov_free_vf_vports(struct efx_nic *efx) 114 { 115 struct efx_ef10_nic_data *nic_data = efx->nic_data; 116 int i; 117 118 if (!nic_data->vf) 119 return; 120 121 for (i = 0; i < efx->vf_count; i++) { 122 struct ef10_vf *vf = nic_data->vf + i; 123 124 /* If VF is assigned, do not free the vport */ 125 if (vf->pci_dev && 126 vf->pci_dev->dev_flags & PCI_DEV_FLAGS_ASSIGNED) 127 continue; 128 129 if (vf->vport_assigned) { 130 efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, i); 131 vf->vport_assigned = 0; 132 } 133 134 if (!is_zero_ether_addr(vf->mac)) { 135 efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac); 136 eth_zero_addr(vf->mac); 137 } 138 139 if (vf->vport_id) { 140 efx_ef10_vport_free(efx, vf->vport_id); 141 vf->vport_id = 0; 142 } 143 144 vf->efx = NULL; 145 } 146 } 147 148 static void efx_ef10_sriov_free_vf_vswitching(struct efx_nic *efx) 149 { 150 struct efx_ef10_nic_data *nic_data = efx->nic_data; 151 152 efx_ef10_sriov_free_vf_vports(efx); 153 kfree(nic_data->vf); 154 nic_data->vf = NULL; 155 } 156 157 static int efx_ef10_sriov_assign_vf_vport(struct efx_nic *efx, 158 unsigned int vf_i) 159 { 160 struct efx_ef10_nic_data *nic_data = efx->nic_data; 161 struct ef10_vf *vf = nic_data->vf + vf_i; 162 int rc; 163 164 if (WARN_ON_ONCE(!nic_data->vf)) 165 return -EOPNOTSUPP; 166 167 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED, 168 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL, 169 vf->vlan, &vf->vport_id); 170 if (rc) 171 return rc; 172 173 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac); 174 if (rc) { 175 eth_zero_addr(vf->mac); 176 return rc; 177 } 178 179 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i); 180 if (rc) 181 return rc; 182 183 vf->vport_assigned = 1; 184 return 0; 185 } 186 187 static int efx_ef10_sriov_alloc_vf_vswitching(struct efx_nic *efx) 188 { 189 struct efx_ef10_nic_data *nic_data = efx->nic_data; 190 unsigned int i; 191 int rc; 192 193 nic_data->vf = kcalloc(efx->vf_count, sizeof(struct ef10_vf), 194 GFP_KERNEL); 195 if (!nic_data->vf) 196 return -ENOMEM; 197 198 for (i = 0; i < efx->vf_count; i++) { 199 eth_random_addr(nic_data->vf[i].mac); 200 nic_data->vf[i].efx = NULL; 201 nic_data->vf[i].vlan = EFX_EF10_NO_VLAN; 202 203 rc = efx_ef10_sriov_assign_vf_vport(efx, i); 204 if (rc) 205 goto fail; 206 } 207 208 return 0; 209 fail: 210 efx_ef10_sriov_free_vf_vports(efx); 211 kfree(nic_data->vf); 212 nic_data->vf = NULL; 213 return rc; 214 } 215 216 static int efx_ef10_sriov_restore_vf_vswitching(struct efx_nic *efx) 217 { 218 unsigned int i; 219 int rc; 220 221 for (i = 0; i < efx->vf_count; i++) { 222 rc = efx_ef10_sriov_assign_vf_vport(efx, i); 223 if (rc) 224 goto fail; 225 } 226 227 return 0; 228 fail: 229 efx_ef10_sriov_free_vf_vswitching(efx); 230 return rc; 231 } 232 233 static int efx_ef10_vadaptor_alloc_set_features(struct efx_nic *efx) 234 { 235 struct efx_ef10_nic_data *nic_data = efx->nic_data; 236 u32 port_flags; 237 int rc; 238 239 rc = efx_ef10_vadaptor_alloc(efx, nic_data->vport_id); 240 if (rc) 241 goto fail_vadaptor_alloc; 242 243 rc = efx_ef10_vadaptor_query(efx, nic_data->vport_id, 244 &port_flags, NULL, NULL); 245 if (rc) 246 goto fail_vadaptor_query; 247 248 if (port_flags & 249 (1 << MC_CMD_VPORT_ALLOC_IN_FLAG_VLAN_RESTRICT_LBN)) 250 efx->fixed_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 251 else 252 efx->fixed_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 253 254 return 0; 255 256 fail_vadaptor_query: 257 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); 258 fail_vadaptor_alloc: 259 return rc; 260 } 261 262 /* On top of the default firmware vswitch setup, create a VEB vswitch and 263 * expansion vport for use by this function. 264 */ 265 int efx_ef10_vswitching_probe_pf(struct efx_nic *efx) 266 { 267 struct efx_ef10_nic_data *nic_data = efx->nic_data; 268 struct net_device *net_dev = efx->net_dev; 269 int rc; 270 271 if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0) { 272 /* vswitch not needed as we have no VFs */ 273 efx_ef10_vadaptor_alloc_set_features(efx); 274 return 0; 275 } 276 277 rc = efx_ef10_vswitch_alloc(efx, EVB_PORT_ID_ASSIGNED, 278 MC_CMD_VSWITCH_ALLOC_IN_VSWITCH_TYPE_VEB); 279 if (rc) 280 goto fail1; 281 282 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED, 283 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL, 284 EFX_EF10_NO_VLAN, &nic_data->vport_id); 285 if (rc) 286 goto fail2; 287 288 rc = efx_ef10_vport_add_mac(efx, nic_data->vport_id, net_dev->dev_addr); 289 if (rc) 290 goto fail3; 291 ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr); 292 293 rc = efx_ef10_vadaptor_alloc_set_features(efx); 294 if (rc) 295 goto fail4; 296 297 return 0; 298 fail4: 299 efx_ef10_vport_del_mac(efx, nic_data->vport_id, nic_data->vport_mac); 300 eth_zero_addr(nic_data->vport_mac); 301 fail3: 302 efx_ef10_vport_free(efx, nic_data->vport_id); 303 nic_data->vport_id = EVB_PORT_ID_ASSIGNED; 304 fail2: 305 efx_ef10_vswitch_free(efx, EVB_PORT_ID_ASSIGNED); 306 fail1: 307 return rc; 308 } 309 310 int efx_ef10_vswitching_probe_vf(struct efx_nic *efx) 311 { 312 return efx_ef10_vadaptor_alloc_set_features(efx); 313 } 314 315 int efx_ef10_vswitching_restore_pf(struct efx_nic *efx) 316 { 317 struct efx_ef10_nic_data *nic_data = efx->nic_data; 318 int rc; 319 320 if (!nic_data->must_probe_vswitching) 321 return 0; 322 323 rc = efx_ef10_vswitching_probe_pf(efx); 324 if (rc) 325 goto fail; 326 327 rc = efx_ef10_sriov_restore_vf_vswitching(efx); 328 if (rc) 329 goto fail; 330 331 nic_data->must_probe_vswitching = false; 332 fail: 333 return rc; 334 } 335 336 int efx_ef10_vswitching_restore_vf(struct efx_nic *efx) 337 { 338 struct efx_ef10_nic_data *nic_data = efx->nic_data; 339 int rc; 340 341 if (!nic_data->must_probe_vswitching) 342 return 0; 343 344 rc = efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); 345 if (rc) 346 return rc; 347 348 nic_data->must_probe_vswitching = false; 349 return 0; 350 } 351 352 void efx_ef10_vswitching_remove_pf(struct efx_nic *efx) 353 { 354 struct efx_ef10_nic_data *nic_data = efx->nic_data; 355 356 efx_ef10_sriov_free_vf_vswitching(efx); 357 358 efx_ef10_vadaptor_free(efx, nic_data->vport_id); 359 360 if (nic_data->vport_id == EVB_PORT_ID_ASSIGNED) 361 return; /* No vswitch was ever created */ 362 363 if (!is_zero_ether_addr(nic_data->vport_mac)) { 364 efx_ef10_vport_del_mac(efx, nic_data->vport_id, 365 efx->net_dev->dev_addr); 366 eth_zero_addr(nic_data->vport_mac); 367 } 368 efx_ef10_vport_free(efx, nic_data->vport_id); 369 nic_data->vport_id = EVB_PORT_ID_ASSIGNED; 370 371 /* Only free the vswitch if no VFs are assigned */ 372 if (!pci_vfs_assigned(efx->pci_dev)) 373 efx_ef10_vswitch_free(efx, nic_data->vport_id); 374 } 375 376 void efx_ef10_vswitching_remove_vf(struct efx_nic *efx) 377 { 378 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); 379 } 380 381 static int efx_ef10_pci_sriov_enable(struct efx_nic *efx, int num_vfs) 382 { 383 int rc = 0; 384 struct pci_dev *dev = efx->pci_dev; 385 386 efx->vf_count = num_vfs; 387 388 rc = efx_ef10_sriov_alloc_vf_vswitching(efx); 389 if (rc) 390 goto fail1; 391 392 rc = pci_enable_sriov(dev, num_vfs); 393 if (rc) 394 goto fail2; 395 396 return 0; 397 fail2: 398 efx_ef10_sriov_free_vf_vswitching(efx); 399 fail1: 400 efx->vf_count = 0; 401 netif_err(efx, probe, efx->net_dev, 402 "Failed to enable SRIOV VFs\n"); 403 return rc; 404 } 405 406 static int efx_ef10_pci_sriov_disable(struct efx_nic *efx, bool force) 407 { 408 struct pci_dev *dev = efx->pci_dev; 409 unsigned int vfs_assigned = 0; 410 411 vfs_assigned = pci_vfs_assigned(dev); 412 413 if (vfs_assigned && !force) { 414 netif_info(efx, drv, efx->net_dev, "VFs are assigned to guests; " 415 "please detach them before disabling SR-IOV\n"); 416 return -EBUSY; 417 } 418 419 if (!vfs_assigned) 420 pci_disable_sriov(dev); 421 422 efx_ef10_sriov_free_vf_vswitching(efx); 423 efx->vf_count = 0; 424 return 0; 425 } 426 427 int efx_ef10_sriov_configure(struct efx_nic *efx, int num_vfs) 428 { 429 if (num_vfs == 0) 430 return efx_ef10_pci_sriov_disable(efx, false); 431 else 432 return efx_ef10_pci_sriov_enable(efx, num_vfs); 433 } 434 435 int efx_ef10_sriov_init(struct efx_nic *efx) 436 { 437 return 0; 438 } 439 440 void efx_ef10_sriov_fini(struct efx_nic *efx) 441 { 442 struct efx_ef10_nic_data *nic_data = efx->nic_data; 443 unsigned int i; 444 int rc; 445 446 if (!nic_data->vf) { 447 /* Remove any un-assigned orphaned VFs */ 448 if (pci_num_vf(efx->pci_dev) && !pci_vfs_assigned(efx->pci_dev)) 449 pci_disable_sriov(efx->pci_dev); 450 return; 451 } 452 453 /* Remove any VFs in the host */ 454 for (i = 0; i < efx->vf_count; ++i) { 455 struct efx_nic *vf_efx = nic_data->vf[i].efx; 456 457 if (vf_efx) 458 vf_efx->pci_dev->driver->remove(vf_efx->pci_dev); 459 } 460 461 rc = efx_ef10_pci_sriov_disable(efx, true); 462 if (rc) 463 netif_dbg(efx, drv, efx->net_dev, 464 "Disabling SRIOV was not successful rc=%d\n", rc); 465 else 466 netif_dbg(efx, drv, efx->net_dev, "SRIOV disabled\n"); 467 } 468 469 static int efx_ef10_vport_del_vf_mac(struct efx_nic *efx, unsigned int port_id, 470 u8 *mac) 471 { 472 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_DEL_MAC_ADDRESS_IN_LEN); 473 MCDI_DECLARE_BUF_ERR(outbuf); 474 size_t outlen; 475 int rc; 476 477 MCDI_SET_DWORD(inbuf, VPORT_DEL_MAC_ADDRESS_IN_VPORT_ID, port_id); 478 ether_addr_copy(MCDI_PTR(inbuf, VPORT_DEL_MAC_ADDRESS_IN_MACADDR), mac); 479 480 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_DEL_MAC_ADDRESS, inbuf, 481 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen); 482 483 return rc; 484 } 485 486 int efx_ef10_sriov_set_vf_mac(struct efx_nic *efx, int vf_i, u8 *mac) 487 { 488 struct efx_ef10_nic_data *nic_data = efx->nic_data; 489 struct ef10_vf *vf; 490 int rc; 491 492 if (!nic_data->vf) 493 return -EOPNOTSUPP; 494 495 if (vf_i >= efx->vf_count) 496 return -EINVAL; 497 vf = nic_data->vf + vf_i; 498 499 if (vf->efx) { 500 efx_device_detach_sync(vf->efx); 501 efx_net_stop(vf->efx->net_dev); 502 503 down_write(&vf->efx->filter_sem); 504 vf->efx->type->filter_table_remove(vf->efx); 505 506 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED); 507 if (rc) { 508 up_write(&vf->efx->filter_sem); 509 return rc; 510 } 511 } 512 513 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i); 514 if (rc) 515 return rc; 516 517 if (!is_zero_ether_addr(vf->mac)) { 518 rc = efx_ef10_vport_del_vf_mac(efx, vf->vport_id, vf->mac); 519 if (rc) 520 return rc; 521 } 522 523 if (!is_zero_ether_addr(mac)) { 524 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, mac); 525 if (rc) { 526 eth_zero_addr(vf->mac); 527 goto fail; 528 } 529 if (vf->efx) 530 ether_addr_copy(vf->efx->net_dev->dev_addr, mac); 531 } 532 533 ether_addr_copy(vf->mac, mac); 534 535 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i); 536 if (rc) 537 goto fail; 538 539 if (vf->efx) { 540 /* VF cannot use the vport_id that the PF created */ 541 rc = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED); 542 if (rc) { 543 up_write(&vf->efx->filter_sem); 544 return rc; 545 } 546 vf->efx->type->filter_table_probe(vf->efx); 547 up_write(&vf->efx->filter_sem); 548 efx_net_open(vf->efx->net_dev); 549 efx_device_attach_if_not_resetting(vf->efx); 550 } 551 552 return 0; 553 554 fail: 555 eth_zero_addr(vf->mac); 556 return rc; 557 } 558 559 int efx_ef10_sriov_set_vf_vlan(struct efx_nic *efx, int vf_i, u16 vlan, 560 u8 qos) 561 { 562 struct efx_ef10_nic_data *nic_data = efx->nic_data; 563 struct ef10_vf *vf; 564 u16 new_vlan; 565 int rc = 0, rc2 = 0; 566 567 if (vf_i >= efx->vf_count) 568 return -EINVAL; 569 if (qos != 0) 570 return -EINVAL; 571 572 vf = nic_data->vf + vf_i; 573 574 new_vlan = (vlan == 0) ? EFX_EF10_NO_VLAN : vlan; 575 if (new_vlan == vf->vlan) 576 return 0; 577 578 if (vf->efx) { 579 efx_device_detach_sync(vf->efx); 580 efx_net_stop(vf->efx->net_dev); 581 582 mutex_lock(&vf->efx->mac_lock); 583 down_write(&vf->efx->filter_sem); 584 vf->efx->type->filter_table_remove(vf->efx); 585 586 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED); 587 if (rc) 588 goto restore_filters; 589 } 590 591 if (vf->vport_assigned) { 592 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i); 593 if (rc) { 594 netif_warn(efx, drv, efx->net_dev, 595 "Failed to change vlan on VF %d.\n", vf_i); 596 netif_warn(efx, drv, efx->net_dev, 597 "This is likely because the VF is bound to a driver in a VM.\n"); 598 netif_warn(efx, drv, efx->net_dev, 599 "Please unload the driver in the VM.\n"); 600 goto restore_vadaptor; 601 } 602 vf->vport_assigned = 0; 603 } 604 605 if (!is_zero_ether_addr(vf->mac)) { 606 rc = efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac); 607 if (rc) 608 goto restore_evb_port; 609 } 610 611 if (vf->vport_id) { 612 rc = efx_ef10_vport_free(efx, vf->vport_id); 613 if (rc) 614 goto restore_mac; 615 vf->vport_id = 0; 616 } 617 618 /* Do the actual vlan change */ 619 vf->vlan = new_vlan; 620 621 /* Restore everything in reverse order */ 622 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED, 623 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL, 624 vf->vlan, &vf->vport_id); 625 if (rc) 626 goto reset_nic_up_write; 627 628 restore_mac: 629 if (!is_zero_ether_addr(vf->mac)) { 630 rc2 = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac); 631 if (rc2) { 632 eth_zero_addr(vf->mac); 633 goto reset_nic_up_write; 634 } 635 } 636 637 restore_evb_port: 638 rc2 = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i); 639 if (rc2) 640 goto reset_nic_up_write; 641 else 642 vf->vport_assigned = 1; 643 644 restore_vadaptor: 645 if (vf->efx) { 646 rc2 = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED); 647 if (rc2) 648 goto reset_nic_up_write; 649 } 650 651 restore_filters: 652 if (vf->efx) { 653 rc2 = vf->efx->type->filter_table_probe(vf->efx); 654 if (rc2) 655 goto reset_nic_up_write; 656 657 up_write(&vf->efx->filter_sem); 658 mutex_unlock(&vf->efx->mac_lock); 659 660 rc2 = efx_net_open(vf->efx->net_dev); 661 if (rc2) 662 goto reset_nic; 663 664 efx_device_attach_if_not_resetting(vf->efx); 665 } 666 return rc; 667 668 reset_nic_up_write: 669 if (vf->efx) { 670 up_write(&vf->efx->filter_sem); 671 mutex_unlock(&vf->efx->mac_lock); 672 } 673 reset_nic: 674 if (vf->efx) { 675 netif_err(efx, drv, efx->net_dev, 676 "Failed to restore VF - scheduling reset.\n"); 677 efx_schedule_reset(vf->efx, RESET_TYPE_DATAPATH); 678 } else { 679 netif_err(efx, drv, efx->net_dev, 680 "Failed to restore the VF and cannot reset the VF " 681 "- VF is not functional.\n"); 682 netif_err(efx, drv, efx->net_dev, 683 "Please reload the driver attached to the VF.\n"); 684 } 685 686 return rc ? rc : rc2; 687 } 688 689 int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i, 690 bool spoofchk) 691 { 692 return spoofchk ? -EOPNOTSUPP : 0; 693 } 694 695 int efx_ef10_sriov_set_vf_link_state(struct efx_nic *efx, int vf_i, 696 int link_state) 697 { 698 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN); 699 struct efx_ef10_nic_data *nic_data = efx->nic_data; 700 701 BUILD_BUG_ON(IFLA_VF_LINK_STATE_AUTO != 702 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_AUTO); 703 BUILD_BUG_ON(IFLA_VF_LINK_STATE_ENABLE != 704 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_UP); 705 BUILD_BUG_ON(IFLA_VF_LINK_STATE_DISABLE != 706 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_DOWN); 707 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION, 708 LINK_STATE_MODE_IN_FUNCTION_PF, 709 nic_data->pf_index, 710 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i); 711 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, link_state); 712 return efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf), 713 NULL, 0, NULL); /* don't care what old mode was */ 714 } 715 716 int efx_ef10_sriov_get_vf_config(struct efx_nic *efx, int vf_i, 717 struct ifla_vf_info *ivf) 718 { 719 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN); 720 MCDI_DECLARE_BUF(outbuf, MC_CMD_LINK_STATE_MODE_OUT_LEN); 721 722 struct efx_ef10_nic_data *nic_data = efx->nic_data; 723 struct ef10_vf *vf; 724 size_t outlen; 725 int rc; 726 727 if (vf_i >= efx->vf_count) 728 return -EINVAL; 729 730 if (!nic_data->vf) 731 return -EOPNOTSUPP; 732 733 vf = nic_data->vf + vf_i; 734 735 ivf->vf = vf_i; 736 ivf->min_tx_rate = 0; 737 ivf->max_tx_rate = 0; 738 ether_addr_copy(ivf->mac, vf->mac); 739 ivf->vlan = (vf->vlan == EFX_EF10_NO_VLAN) ? 0 : vf->vlan; 740 ivf->qos = 0; 741 742 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION, 743 LINK_STATE_MODE_IN_FUNCTION_PF, 744 nic_data->pf_index, 745 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i); 746 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, 747 MC_CMD_LINK_STATE_MODE_IN_DO_NOT_CHANGE); 748 rc = efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf), 749 outbuf, sizeof(outbuf), &outlen); 750 if (rc) 751 return rc; 752 if (outlen < MC_CMD_LINK_STATE_MODE_OUT_LEN) 753 return -EIO; 754 ivf->linkstate = MCDI_DWORD(outbuf, LINK_STATE_MODE_OUT_OLD_MODE); 755 756 return 0; 757 } 758