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 u32 port_flags; 236 int rc; 237 238 rc = efx_ef10_vadaptor_alloc(efx, efx->vport_id); 239 if (rc) 240 goto fail_vadaptor_alloc; 241 242 rc = efx_ef10_vadaptor_query(efx, efx->vport_id, 243 &port_flags, NULL, NULL); 244 if (rc) 245 goto fail_vadaptor_query; 246 247 if (port_flags & 248 (1 << MC_CMD_VPORT_ALLOC_IN_FLAG_VLAN_RESTRICT_LBN)) 249 efx->fixed_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 250 else 251 efx->fixed_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 252 253 return 0; 254 255 fail_vadaptor_query: 256 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); 257 fail_vadaptor_alloc: 258 return rc; 259 } 260 261 /* On top of the default firmware vswitch setup, create a VEB vswitch and 262 * expansion vport for use by this function. 263 */ 264 int efx_ef10_vswitching_probe_pf(struct efx_nic *efx) 265 { 266 struct efx_ef10_nic_data *nic_data = efx->nic_data; 267 struct net_device *net_dev = efx->net_dev; 268 int rc; 269 270 if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0) { 271 /* vswitch not needed as we have no VFs */ 272 efx_ef10_vadaptor_alloc_set_features(efx); 273 return 0; 274 } 275 276 rc = efx_ef10_vswitch_alloc(efx, EVB_PORT_ID_ASSIGNED, 277 MC_CMD_VSWITCH_ALLOC_IN_VSWITCH_TYPE_VEB); 278 if (rc) 279 goto fail1; 280 281 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED, 282 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL, 283 EFX_EF10_NO_VLAN, &efx->vport_id); 284 if (rc) 285 goto fail2; 286 287 rc = efx_ef10_vport_add_mac(efx, efx->vport_id, net_dev->dev_addr); 288 if (rc) 289 goto fail3; 290 ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr); 291 292 rc = efx_ef10_vadaptor_alloc_set_features(efx); 293 if (rc) 294 goto fail4; 295 296 return 0; 297 fail4: 298 efx_ef10_vport_del_mac(efx, efx->vport_id, nic_data->vport_mac); 299 eth_zero_addr(nic_data->vport_mac); 300 fail3: 301 efx_ef10_vport_free(efx, efx->vport_id); 302 efx->vport_id = EVB_PORT_ID_ASSIGNED; 303 fail2: 304 efx_ef10_vswitch_free(efx, EVB_PORT_ID_ASSIGNED); 305 fail1: 306 return rc; 307 } 308 309 int efx_ef10_vswitching_probe_vf(struct efx_nic *efx) 310 { 311 return efx_ef10_vadaptor_alloc_set_features(efx); 312 } 313 314 int efx_ef10_vswitching_restore_pf(struct efx_nic *efx) 315 { 316 struct efx_ef10_nic_data *nic_data = efx->nic_data; 317 int rc; 318 319 if (!nic_data->must_probe_vswitching) 320 return 0; 321 322 rc = efx_ef10_vswitching_probe_pf(efx); 323 if (rc) 324 goto fail; 325 326 rc = efx_ef10_sriov_restore_vf_vswitching(efx); 327 if (rc) 328 goto fail; 329 330 nic_data->must_probe_vswitching = false; 331 fail: 332 return rc; 333 } 334 335 int efx_ef10_vswitching_restore_vf(struct efx_nic *efx) 336 { 337 struct efx_ef10_nic_data *nic_data = efx->nic_data; 338 int rc; 339 340 if (!nic_data->must_probe_vswitching) 341 return 0; 342 343 rc = efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); 344 if (rc) 345 return rc; 346 347 nic_data->must_probe_vswitching = false; 348 return 0; 349 } 350 351 void efx_ef10_vswitching_remove_pf(struct efx_nic *efx) 352 { 353 struct efx_ef10_nic_data *nic_data = efx->nic_data; 354 355 efx_ef10_sriov_free_vf_vswitching(efx); 356 357 efx_ef10_vadaptor_free(efx, efx->vport_id); 358 359 if (efx->vport_id == EVB_PORT_ID_ASSIGNED) 360 return; /* No vswitch was ever created */ 361 362 if (!is_zero_ether_addr(nic_data->vport_mac)) { 363 efx_ef10_vport_del_mac(efx, efx->vport_id, 364 efx->net_dev->dev_addr); 365 eth_zero_addr(nic_data->vport_mac); 366 } 367 efx_ef10_vport_free(efx, efx->vport_id); 368 efx->vport_id = EVB_PORT_ID_ASSIGNED; 369 370 /* Only free the vswitch if no VFs are assigned */ 371 if (!pci_vfs_assigned(efx->pci_dev)) 372 efx_ef10_vswitch_free(efx, efx->vport_id); 373 } 374 375 void efx_ef10_vswitching_remove_vf(struct efx_nic *efx) 376 { 377 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); 378 } 379 380 static int efx_ef10_pci_sriov_enable(struct efx_nic *efx, int num_vfs) 381 { 382 int rc = 0; 383 struct pci_dev *dev = efx->pci_dev; 384 385 efx->vf_count = num_vfs; 386 387 rc = efx_ef10_sriov_alloc_vf_vswitching(efx); 388 if (rc) 389 goto fail1; 390 391 rc = pci_enable_sriov(dev, num_vfs); 392 if (rc) 393 goto fail2; 394 395 return 0; 396 fail2: 397 efx_ef10_sriov_free_vf_vswitching(efx); 398 fail1: 399 efx->vf_count = 0; 400 netif_err(efx, probe, efx->net_dev, 401 "Failed to enable SRIOV VFs\n"); 402 return rc; 403 } 404 405 static int efx_ef10_pci_sriov_disable(struct efx_nic *efx, bool force) 406 { 407 struct pci_dev *dev = efx->pci_dev; 408 unsigned int vfs_assigned = 0; 409 410 vfs_assigned = pci_vfs_assigned(dev); 411 412 if (vfs_assigned && !force) { 413 netif_info(efx, drv, efx->net_dev, "VFs are assigned to guests; " 414 "please detach them before disabling SR-IOV\n"); 415 return -EBUSY; 416 } 417 418 if (!vfs_assigned) 419 pci_disable_sriov(dev); 420 421 efx_ef10_sriov_free_vf_vswitching(efx); 422 efx->vf_count = 0; 423 return 0; 424 } 425 426 int efx_ef10_sriov_configure(struct efx_nic *efx, int num_vfs) 427 { 428 if (num_vfs == 0) 429 return efx_ef10_pci_sriov_disable(efx, false); 430 else 431 return efx_ef10_pci_sriov_enable(efx, num_vfs); 432 } 433 434 int efx_ef10_sriov_init(struct efx_nic *efx) 435 { 436 return 0; 437 } 438 439 void efx_ef10_sriov_fini(struct efx_nic *efx) 440 { 441 struct efx_ef10_nic_data *nic_data = efx->nic_data; 442 unsigned int i; 443 int rc; 444 445 if (!nic_data->vf) { 446 /* Remove any un-assigned orphaned VFs */ 447 if (pci_num_vf(efx->pci_dev) && !pci_vfs_assigned(efx->pci_dev)) 448 pci_disable_sriov(efx->pci_dev); 449 return; 450 } 451 452 /* Remove any VFs in the host */ 453 for (i = 0; i < efx->vf_count; ++i) { 454 struct efx_nic *vf_efx = nic_data->vf[i].efx; 455 456 if (vf_efx) 457 vf_efx->pci_dev->driver->remove(vf_efx->pci_dev); 458 } 459 460 rc = efx_ef10_pci_sriov_disable(efx, true); 461 if (rc) 462 netif_dbg(efx, drv, efx->net_dev, 463 "Disabling SRIOV was not successful rc=%d\n", rc); 464 else 465 netif_dbg(efx, drv, efx->net_dev, "SRIOV disabled\n"); 466 } 467 468 static int efx_ef10_vport_del_vf_mac(struct efx_nic *efx, unsigned int port_id, 469 u8 *mac) 470 { 471 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_DEL_MAC_ADDRESS_IN_LEN); 472 MCDI_DECLARE_BUF_ERR(outbuf); 473 size_t outlen; 474 int rc; 475 476 MCDI_SET_DWORD(inbuf, VPORT_DEL_MAC_ADDRESS_IN_VPORT_ID, port_id); 477 ether_addr_copy(MCDI_PTR(inbuf, VPORT_DEL_MAC_ADDRESS_IN_MACADDR), mac); 478 479 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_DEL_MAC_ADDRESS, inbuf, 480 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen); 481 482 return rc; 483 } 484 485 int efx_ef10_sriov_set_vf_mac(struct efx_nic *efx, int vf_i, u8 *mac) 486 { 487 struct efx_ef10_nic_data *nic_data = efx->nic_data; 488 struct ef10_vf *vf; 489 int rc; 490 491 if (!nic_data->vf) 492 return -EOPNOTSUPP; 493 494 if (vf_i >= efx->vf_count) 495 return -EINVAL; 496 vf = nic_data->vf + vf_i; 497 498 if (vf->efx) { 499 efx_device_detach_sync(vf->efx); 500 efx_net_stop(vf->efx->net_dev); 501 502 down_write(&vf->efx->filter_sem); 503 vf->efx->type->filter_table_remove(vf->efx); 504 505 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED); 506 if (rc) { 507 up_write(&vf->efx->filter_sem); 508 return rc; 509 } 510 } 511 512 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i); 513 if (rc) 514 return rc; 515 516 if (!is_zero_ether_addr(vf->mac)) { 517 rc = efx_ef10_vport_del_vf_mac(efx, vf->vport_id, vf->mac); 518 if (rc) 519 return rc; 520 } 521 522 if (!is_zero_ether_addr(mac)) { 523 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, mac); 524 if (rc) 525 goto fail; 526 527 if (vf->efx) 528 ether_addr_copy(vf->efx->net_dev->dev_addr, mac); 529 } 530 531 ether_addr_copy(vf->mac, mac); 532 533 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i); 534 if (rc) 535 goto fail; 536 537 if (vf->efx) { 538 /* VF cannot use the vport_id that the PF created */ 539 rc = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED); 540 if (rc) { 541 up_write(&vf->efx->filter_sem); 542 return rc; 543 } 544 vf->efx->type->filter_table_probe(vf->efx); 545 up_write(&vf->efx->filter_sem); 546 efx_net_open(vf->efx->net_dev); 547 efx_device_attach_if_not_resetting(vf->efx); 548 } 549 550 return 0; 551 552 fail: 553 eth_zero_addr(vf->mac); 554 return rc; 555 } 556 557 int efx_ef10_sriov_set_vf_vlan(struct efx_nic *efx, int vf_i, u16 vlan, 558 u8 qos) 559 { 560 struct efx_ef10_nic_data *nic_data = efx->nic_data; 561 struct ef10_vf *vf; 562 u16 new_vlan; 563 int rc = 0, rc2 = 0; 564 565 if (vf_i >= efx->vf_count) 566 return -EINVAL; 567 if (qos != 0) 568 return -EINVAL; 569 570 vf = nic_data->vf + vf_i; 571 572 new_vlan = (vlan == 0) ? EFX_EF10_NO_VLAN : vlan; 573 if (new_vlan == vf->vlan) 574 return 0; 575 576 if (vf->efx) { 577 efx_device_detach_sync(vf->efx); 578 efx_net_stop(vf->efx->net_dev); 579 580 mutex_lock(&vf->efx->mac_lock); 581 down_write(&vf->efx->filter_sem); 582 vf->efx->type->filter_table_remove(vf->efx); 583 584 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED); 585 if (rc) 586 goto restore_filters; 587 } 588 589 if (vf->vport_assigned) { 590 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i); 591 if (rc) { 592 netif_warn(efx, drv, efx->net_dev, 593 "Failed to change vlan on VF %d.\n", vf_i); 594 netif_warn(efx, drv, efx->net_dev, 595 "This is likely because the VF is bound to a driver in a VM.\n"); 596 netif_warn(efx, drv, efx->net_dev, 597 "Please unload the driver in the VM.\n"); 598 goto restore_vadaptor; 599 } 600 vf->vport_assigned = 0; 601 } 602 603 if (!is_zero_ether_addr(vf->mac)) { 604 rc = efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac); 605 if (rc) 606 goto restore_evb_port; 607 } 608 609 if (vf->vport_id) { 610 rc = efx_ef10_vport_free(efx, vf->vport_id); 611 if (rc) 612 goto restore_mac; 613 vf->vport_id = 0; 614 } 615 616 /* Do the actual vlan change */ 617 vf->vlan = new_vlan; 618 619 /* Restore everything in reverse order */ 620 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED, 621 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL, 622 vf->vlan, &vf->vport_id); 623 if (rc) 624 goto reset_nic_up_write; 625 626 restore_mac: 627 if (!is_zero_ether_addr(vf->mac)) { 628 rc2 = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac); 629 if (rc2) { 630 eth_zero_addr(vf->mac); 631 goto reset_nic_up_write; 632 } 633 } 634 635 restore_evb_port: 636 rc2 = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i); 637 if (rc2) 638 goto reset_nic_up_write; 639 else 640 vf->vport_assigned = 1; 641 642 restore_vadaptor: 643 if (vf->efx) { 644 rc2 = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED); 645 if (rc2) 646 goto reset_nic_up_write; 647 } 648 649 restore_filters: 650 if (vf->efx) { 651 rc2 = vf->efx->type->filter_table_probe(vf->efx); 652 if (rc2) 653 goto reset_nic_up_write; 654 655 up_write(&vf->efx->filter_sem); 656 mutex_unlock(&vf->efx->mac_lock); 657 658 rc2 = efx_net_open(vf->efx->net_dev); 659 if (rc2) 660 goto reset_nic; 661 662 efx_device_attach_if_not_resetting(vf->efx); 663 } 664 return rc; 665 666 reset_nic_up_write: 667 if (vf->efx) { 668 up_write(&vf->efx->filter_sem); 669 mutex_unlock(&vf->efx->mac_lock); 670 } 671 reset_nic: 672 if (vf->efx) { 673 netif_err(efx, drv, efx->net_dev, 674 "Failed to restore VF - scheduling reset.\n"); 675 efx_schedule_reset(vf->efx, RESET_TYPE_DATAPATH); 676 } else { 677 netif_err(efx, drv, efx->net_dev, 678 "Failed to restore the VF and cannot reset the VF " 679 "- VF is not functional.\n"); 680 netif_err(efx, drv, efx->net_dev, 681 "Please reload the driver attached to the VF.\n"); 682 } 683 684 return rc ? rc : rc2; 685 } 686 687 static int efx_ef10_sriov_set_privilege_mask(struct efx_nic *efx, int vf_i, 688 u32 mask, u32 value) 689 { 690 MCDI_DECLARE_BUF(pm_outbuf, MC_CMD_PRIVILEGE_MASK_OUT_LEN); 691 MCDI_DECLARE_BUF(pm_inbuf, MC_CMD_PRIVILEGE_MASK_IN_LEN); 692 struct efx_ef10_nic_data *nic_data = efx->nic_data; 693 u32 old_mask, new_mask; 694 size_t outlen; 695 int rc; 696 697 EFX_WARN_ON_PARANOID((value & ~mask) != 0); 698 699 /* Get privilege mask */ 700 MCDI_POPULATE_DWORD_2(pm_inbuf, PRIVILEGE_MASK_IN_FUNCTION, 701 PRIVILEGE_MASK_IN_FUNCTION_PF, nic_data->pf_index, 702 PRIVILEGE_MASK_IN_FUNCTION_VF, vf_i); 703 704 rc = efx_mcdi_rpc(efx, MC_CMD_PRIVILEGE_MASK, 705 pm_inbuf, sizeof(pm_inbuf), 706 pm_outbuf, sizeof(pm_outbuf), &outlen); 707 708 if (rc != 0) 709 return rc; 710 if (outlen != MC_CMD_PRIVILEGE_MASK_OUT_LEN) 711 return -EIO; 712 713 old_mask = MCDI_DWORD(pm_outbuf, PRIVILEGE_MASK_OUT_OLD_MASK); 714 715 new_mask = old_mask & ~mask; 716 new_mask |= value; 717 718 if (new_mask == old_mask) 719 return 0; 720 721 new_mask |= MC_CMD_PRIVILEGE_MASK_IN_DO_CHANGE; 722 723 /* Set privilege mask */ 724 MCDI_SET_DWORD(pm_inbuf, PRIVILEGE_MASK_IN_NEW_MASK, new_mask); 725 726 rc = efx_mcdi_rpc(efx, MC_CMD_PRIVILEGE_MASK, 727 pm_inbuf, sizeof(pm_inbuf), 728 pm_outbuf, sizeof(pm_outbuf), &outlen); 729 730 if (rc != 0) 731 return rc; 732 if (outlen != MC_CMD_PRIVILEGE_MASK_OUT_LEN) 733 return -EIO; 734 735 return 0; 736 } 737 738 int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i, bool spoofchk) 739 { 740 struct efx_ef10_nic_data *nic_data = efx->nic_data; 741 742 /* Can't enable spoofchk if firmware doesn't support it. */ 743 if (!(nic_data->datapath_caps & 744 BIT(MC_CMD_GET_CAPABILITIES_OUT_TX_MAC_SECURITY_FILTERING_LBN)) && 745 spoofchk) 746 return -EOPNOTSUPP; 747 748 return efx_ef10_sriov_set_privilege_mask(efx, vf_i, 749 MC_CMD_PRIVILEGE_MASK_IN_GRP_MAC_SPOOFING_TX, 750 spoofchk ? 0 : MC_CMD_PRIVILEGE_MASK_IN_GRP_MAC_SPOOFING_TX); 751 } 752 753 int efx_ef10_sriov_set_vf_link_state(struct efx_nic *efx, int vf_i, 754 int link_state) 755 { 756 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN); 757 struct efx_ef10_nic_data *nic_data = efx->nic_data; 758 759 BUILD_BUG_ON(IFLA_VF_LINK_STATE_AUTO != 760 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_AUTO); 761 BUILD_BUG_ON(IFLA_VF_LINK_STATE_ENABLE != 762 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_UP); 763 BUILD_BUG_ON(IFLA_VF_LINK_STATE_DISABLE != 764 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_DOWN); 765 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION, 766 LINK_STATE_MODE_IN_FUNCTION_PF, 767 nic_data->pf_index, 768 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i); 769 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, link_state); 770 return efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf), 771 NULL, 0, NULL); /* don't care what old mode was */ 772 } 773 774 int efx_ef10_sriov_get_vf_config(struct efx_nic *efx, int vf_i, 775 struct ifla_vf_info *ivf) 776 { 777 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN); 778 MCDI_DECLARE_BUF(outbuf, MC_CMD_LINK_STATE_MODE_OUT_LEN); 779 780 struct efx_ef10_nic_data *nic_data = efx->nic_data; 781 struct ef10_vf *vf; 782 size_t outlen; 783 int rc; 784 785 if (vf_i >= efx->vf_count) 786 return -EINVAL; 787 788 if (!nic_data->vf) 789 return -EOPNOTSUPP; 790 791 vf = nic_data->vf + vf_i; 792 793 ivf->vf = vf_i; 794 ivf->min_tx_rate = 0; 795 ivf->max_tx_rate = 0; 796 ether_addr_copy(ivf->mac, vf->mac); 797 ivf->vlan = (vf->vlan == EFX_EF10_NO_VLAN) ? 0 : vf->vlan; 798 ivf->qos = 0; 799 800 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION, 801 LINK_STATE_MODE_IN_FUNCTION_PF, 802 nic_data->pf_index, 803 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i); 804 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, 805 MC_CMD_LINK_STATE_MODE_IN_DO_NOT_CHANGE); 806 rc = efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf), 807 outbuf, sizeof(outbuf), &outlen); 808 if (rc) 809 return rc; 810 if (outlen < MC_CMD_LINK_STATE_MODE_OUT_LEN) 811 return -EIO; 812 ivf->linkstate = MCDI_DWORD(outbuf, LINK_STATE_MODE_OUT_OLD_MODE); 813 814 return 0; 815 } 816