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 && pci_is_dev_assigned(vf->pci_dev)) 126 continue; 127 128 if (vf->vport_assigned) { 129 efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, i); 130 vf->vport_assigned = 0; 131 } 132 133 if (!is_zero_ether_addr(vf->mac)) { 134 efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac); 135 eth_zero_addr(vf->mac); 136 } 137 138 if (vf->vport_id) { 139 efx_ef10_vport_free(efx, vf->vport_id); 140 vf->vport_id = 0; 141 } 142 143 vf->efx = NULL; 144 } 145 } 146 147 static void efx_ef10_sriov_free_vf_vswitching(struct efx_nic *efx) 148 { 149 struct efx_ef10_nic_data *nic_data = efx->nic_data; 150 151 efx_ef10_sriov_free_vf_vports(efx); 152 kfree(nic_data->vf); 153 nic_data->vf = NULL; 154 } 155 156 static int efx_ef10_sriov_assign_vf_vport(struct efx_nic *efx, 157 unsigned int vf_i) 158 { 159 struct efx_ef10_nic_data *nic_data = efx->nic_data; 160 struct ef10_vf *vf = nic_data->vf + vf_i; 161 int rc; 162 163 if (WARN_ON_ONCE(!nic_data->vf)) 164 return -EOPNOTSUPP; 165 166 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED, 167 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL, 168 vf->vlan, &vf->vport_id); 169 if (rc) 170 return rc; 171 172 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac); 173 if (rc) { 174 eth_zero_addr(vf->mac); 175 return rc; 176 } 177 178 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i); 179 if (rc) 180 return rc; 181 182 vf->vport_assigned = 1; 183 return 0; 184 } 185 186 static int efx_ef10_sriov_alloc_vf_vswitching(struct efx_nic *efx) 187 { 188 struct efx_ef10_nic_data *nic_data = efx->nic_data; 189 unsigned int i; 190 int rc; 191 192 nic_data->vf = kcalloc(efx->vf_count, sizeof(struct ef10_vf), 193 GFP_KERNEL); 194 if (!nic_data->vf) 195 return -ENOMEM; 196 197 for (i = 0; i < efx->vf_count; i++) { 198 eth_random_addr(nic_data->vf[i].mac); 199 nic_data->vf[i].efx = NULL; 200 nic_data->vf[i].vlan = EFX_EF10_NO_VLAN; 201 202 rc = efx_ef10_sriov_assign_vf_vport(efx, i); 203 if (rc) 204 goto fail; 205 } 206 207 return 0; 208 fail: 209 efx_ef10_sriov_free_vf_vswitching(efx); 210 return rc; 211 } 212 213 static int efx_ef10_sriov_restore_vf_vswitching(struct efx_nic *efx) 214 { 215 unsigned int i; 216 int rc; 217 218 for (i = 0; i < efx->vf_count; i++) { 219 rc = efx_ef10_sriov_assign_vf_vport(efx, i); 220 if (rc) 221 goto fail; 222 } 223 224 return 0; 225 fail: 226 efx_ef10_sriov_free_vf_vswitching(efx); 227 return rc; 228 } 229 230 static int efx_ef10_vadaptor_alloc_set_features(struct efx_nic *efx) 231 { 232 u32 port_flags; 233 int rc; 234 235 rc = efx_ef10_vadaptor_alloc(efx, efx->vport_id); 236 if (rc) 237 goto fail_vadaptor_alloc; 238 239 rc = efx_ef10_vadaptor_query(efx, efx->vport_id, 240 &port_flags, NULL, NULL); 241 if (rc) 242 goto fail_vadaptor_query; 243 244 if (port_flags & 245 (1 << MC_CMD_VPORT_ALLOC_IN_FLAG_VLAN_RESTRICT_LBN)) 246 efx->fixed_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 247 else 248 efx->fixed_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 249 250 return 0; 251 252 fail_vadaptor_query: 253 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); 254 fail_vadaptor_alloc: 255 return rc; 256 } 257 258 /* On top of the default firmware vswitch setup, create a VEB vswitch and 259 * expansion vport for use by this function. 260 */ 261 int efx_ef10_vswitching_probe_pf(struct efx_nic *efx) 262 { 263 struct efx_ef10_nic_data *nic_data = efx->nic_data; 264 struct net_device *net_dev = efx->net_dev; 265 int rc; 266 267 if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0) { 268 /* vswitch not needed as we have no VFs */ 269 efx_ef10_vadaptor_alloc_set_features(efx); 270 return 0; 271 } 272 273 rc = efx_ef10_vswitch_alloc(efx, EVB_PORT_ID_ASSIGNED, 274 MC_CMD_VSWITCH_ALLOC_IN_VSWITCH_TYPE_VEB); 275 if (rc) 276 goto fail1; 277 278 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED, 279 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL, 280 EFX_EF10_NO_VLAN, &efx->vport_id); 281 if (rc) 282 goto fail2; 283 284 rc = efx_ef10_vport_add_mac(efx, efx->vport_id, net_dev->dev_addr); 285 if (rc) 286 goto fail3; 287 ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr); 288 289 rc = efx_ef10_vadaptor_alloc_set_features(efx); 290 if (rc) 291 goto fail4; 292 293 return 0; 294 fail4: 295 efx_ef10_vport_del_mac(efx, efx->vport_id, nic_data->vport_mac); 296 eth_zero_addr(nic_data->vport_mac); 297 fail3: 298 efx_ef10_vport_free(efx, efx->vport_id); 299 efx->vport_id = EVB_PORT_ID_ASSIGNED; 300 fail2: 301 efx_ef10_vswitch_free(efx, EVB_PORT_ID_ASSIGNED); 302 fail1: 303 return rc; 304 } 305 306 int efx_ef10_vswitching_probe_vf(struct efx_nic *efx) 307 { 308 return efx_ef10_vadaptor_alloc_set_features(efx); 309 } 310 311 int efx_ef10_vswitching_restore_pf(struct efx_nic *efx) 312 { 313 struct efx_ef10_nic_data *nic_data = efx->nic_data; 314 int rc; 315 316 if (!nic_data->must_probe_vswitching) 317 return 0; 318 319 rc = efx_ef10_vswitching_probe_pf(efx); 320 if (rc) 321 goto fail; 322 323 rc = efx_ef10_sriov_restore_vf_vswitching(efx); 324 if (rc) 325 goto fail; 326 327 nic_data->must_probe_vswitching = false; 328 fail: 329 return rc; 330 } 331 332 int efx_ef10_vswitching_restore_vf(struct efx_nic *efx) 333 { 334 struct efx_ef10_nic_data *nic_data = efx->nic_data; 335 int rc; 336 337 if (!nic_data->must_probe_vswitching) 338 return 0; 339 340 rc = efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); 341 if (rc) 342 return rc; 343 344 nic_data->must_probe_vswitching = false; 345 return 0; 346 } 347 348 void efx_ef10_vswitching_remove_pf(struct efx_nic *efx) 349 { 350 struct efx_ef10_nic_data *nic_data = efx->nic_data; 351 352 efx_ef10_sriov_free_vf_vswitching(efx); 353 354 efx_ef10_vadaptor_free(efx, efx->vport_id); 355 356 if (efx->vport_id == EVB_PORT_ID_ASSIGNED) 357 return; /* No vswitch was ever created */ 358 359 if (!is_zero_ether_addr(nic_data->vport_mac)) { 360 efx_ef10_vport_del_mac(efx, efx->vport_id, 361 efx->net_dev->dev_addr); 362 eth_zero_addr(nic_data->vport_mac); 363 } 364 efx_ef10_vport_free(efx, efx->vport_id); 365 efx->vport_id = EVB_PORT_ID_ASSIGNED; 366 367 /* Only free the vswitch if no VFs are assigned */ 368 if (!pci_vfs_assigned(efx->pci_dev)) 369 efx_ef10_vswitch_free(efx, efx->vport_id); 370 } 371 372 void efx_ef10_vswitching_remove_vf(struct efx_nic *efx) 373 { 374 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED); 375 } 376 377 static int efx_ef10_pci_sriov_enable(struct efx_nic *efx, int num_vfs) 378 { 379 int rc = 0; 380 struct pci_dev *dev = efx->pci_dev; 381 382 efx->vf_count = num_vfs; 383 384 rc = efx_ef10_sriov_alloc_vf_vswitching(efx); 385 if (rc) 386 goto fail1; 387 388 rc = pci_enable_sriov(dev, num_vfs); 389 if (rc) 390 goto fail2; 391 392 return 0; 393 fail2: 394 efx_ef10_sriov_free_vf_vswitching(efx); 395 fail1: 396 efx->vf_count = 0; 397 netif_err(efx, probe, efx->net_dev, 398 "Failed to enable SRIOV VFs\n"); 399 return rc; 400 } 401 402 /* Disable SRIOV and remove VFs 403 * If some VFs are attached to a guest (using Xen, only) nothing is 404 * done if force=false, and vports are freed if force=true (for the non 405 * attachedc ones, only) but SRIOV is not disabled and VFs are not 406 * removed in either case. 407 */ 408 static int efx_ef10_pci_sriov_disable(struct efx_nic *efx, bool force) 409 { 410 struct pci_dev *dev = efx->pci_dev; 411 unsigned int vfs_assigned = pci_vfs_assigned(dev); 412 int rc = 0; 413 414 if (vfs_assigned && !force) { 415 netif_info(efx, drv, efx->net_dev, "VFs are assigned to guests; " 416 "please detach them before disabling SR-IOV\n"); 417 return -EBUSY; 418 } 419 420 if (!vfs_assigned) 421 pci_disable_sriov(dev); 422 else 423 rc = -EBUSY; 424 425 efx_ef10_sriov_free_vf_vswitching(efx); 426 efx->vf_count = 0; 427 return rc; 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 int rc; 447 448 if (!nic_data->vf) { 449 /* Remove any un-assigned orphaned VFs. This can happen if the PF driver 450 * was unloaded while any VF was assigned to a guest (using Xen, only). 451 */ 452 if (pci_num_vf(efx->pci_dev) && !pci_vfs_assigned(efx->pci_dev)) 453 pci_disable_sriov(efx->pci_dev); 454 return; 455 } 456 457 /* Disable SRIOV and remove any VFs in the host */ 458 rc = efx_ef10_pci_sriov_disable(efx, true); 459 if (rc) 460 netif_dbg(efx, drv, efx->net_dev, 461 "Disabling SRIOV was not successful rc=%d\n", rc); 462 else 463 netif_dbg(efx, drv, efx->net_dev, "SRIOV disabled\n"); 464 } 465 466 static int efx_ef10_vport_del_vf_mac(struct efx_nic *efx, unsigned int port_id, 467 u8 *mac) 468 { 469 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_DEL_MAC_ADDRESS_IN_LEN); 470 MCDI_DECLARE_BUF_ERR(outbuf); 471 size_t outlen; 472 int rc; 473 474 MCDI_SET_DWORD(inbuf, VPORT_DEL_MAC_ADDRESS_IN_VPORT_ID, port_id); 475 ether_addr_copy(MCDI_PTR(inbuf, VPORT_DEL_MAC_ADDRESS_IN_MACADDR), mac); 476 477 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_DEL_MAC_ADDRESS, inbuf, 478 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen); 479 480 return rc; 481 } 482 483 int efx_ef10_sriov_set_vf_mac(struct efx_nic *efx, int vf_i, u8 *mac) 484 { 485 struct efx_ef10_nic_data *nic_data = efx->nic_data; 486 struct ef10_vf *vf; 487 int rc; 488 489 if (!nic_data->vf) 490 return -EOPNOTSUPP; 491 492 if (vf_i >= efx->vf_count) 493 return -EINVAL; 494 vf = nic_data->vf + vf_i; 495 496 if (vf->efx) { 497 efx_device_detach_sync(vf->efx); 498 efx_net_stop(vf->efx->net_dev); 499 500 down_write(&vf->efx->filter_sem); 501 vf->efx->type->filter_table_remove(vf->efx); 502 503 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED); 504 if (rc) { 505 up_write(&vf->efx->filter_sem); 506 return rc; 507 } 508 } 509 510 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i); 511 if (rc) 512 return rc; 513 514 if (!is_zero_ether_addr(vf->mac)) { 515 rc = efx_ef10_vport_del_vf_mac(efx, vf->vport_id, vf->mac); 516 if (rc) 517 return rc; 518 } 519 520 if (!is_zero_ether_addr(mac)) { 521 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, mac); 522 if (rc) 523 goto fail; 524 525 if (vf->efx) 526 eth_hw_addr_set(vf->efx->net_dev, mac); 527 } 528 529 ether_addr_copy(vf->mac, mac); 530 531 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i); 532 if (rc) 533 goto fail; 534 535 if (vf->efx) { 536 /* VF cannot use the vport_id that the PF created */ 537 rc = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED); 538 if (rc) { 539 up_write(&vf->efx->filter_sem); 540 return rc; 541 } 542 vf->efx->type->filter_table_probe(vf->efx); 543 up_write(&vf->efx->filter_sem); 544 efx_net_open(vf->efx->net_dev); 545 efx_device_attach_if_not_resetting(vf->efx); 546 } 547 548 return 0; 549 550 fail: 551 eth_zero_addr(vf->mac); 552 return rc; 553 } 554 555 int efx_ef10_sriov_set_vf_vlan(struct efx_nic *efx, int vf_i, u16 vlan, 556 u8 qos) 557 { 558 struct efx_ef10_nic_data *nic_data = efx->nic_data; 559 struct ef10_vf *vf; 560 u16 new_vlan; 561 int rc = 0, rc2 = 0; 562 563 if (vf_i >= efx->vf_count) 564 return -EINVAL; 565 if (qos != 0) 566 return -EINVAL; 567 568 vf = nic_data->vf + vf_i; 569 570 new_vlan = (vlan == 0) ? EFX_EF10_NO_VLAN : vlan; 571 if (new_vlan == vf->vlan) 572 return 0; 573 574 if (vf->efx) { 575 efx_device_detach_sync(vf->efx); 576 efx_net_stop(vf->efx->net_dev); 577 578 mutex_lock(&vf->efx->mac_lock); 579 down_write(&vf->efx->filter_sem); 580 vf->efx->type->filter_table_remove(vf->efx); 581 582 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED); 583 if (rc) 584 goto restore_filters; 585 } 586 587 if (vf->vport_assigned) { 588 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i); 589 if (rc) { 590 netif_warn(efx, drv, efx->net_dev, 591 "Failed to change vlan on VF %d.\n", vf_i); 592 netif_warn(efx, drv, efx->net_dev, 593 "This is likely because the VF is bound to a driver in a VM.\n"); 594 netif_warn(efx, drv, efx->net_dev, 595 "Please unload the driver in the VM.\n"); 596 goto restore_vadaptor; 597 } 598 vf->vport_assigned = 0; 599 } 600 601 if (!is_zero_ether_addr(vf->mac)) { 602 rc = efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac); 603 if (rc) 604 goto restore_evb_port; 605 } 606 607 if (vf->vport_id) { 608 rc = efx_ef10_vport_free(efx, vf->vport_id); 609 if (rc) 610 goto restore_mac; 611 vf->vport_id = 0; 612 } 613 614 /* Do the actual vlan change */ 615 vf->vlan = new_vlan; 616 617 /* Restore everything in reverse order */ 618 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED, 619 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL, 620 vf->vlan, &vf->vport_id); 621 if (rc) 622 goto reset_nic_up_write; 623 624 restore_mac: 625 if (!is_zero_ether_addr(vf->mac)) { 626 rc2 = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac); 627 if (rc2) { 628 eth_zero_addr(vf->mac); 629 goto reset_nic_up_write; 630 } 631 } 632 633 restore_evb_port: 634 rc2 = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i); 635 if (rc2) 636 goto reset_nic_up_write; 637 else 638 vf->vport_assigned = 1; 639 640 restore_vadaptor: 641 if (vf->efx) { 642 rc2 = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED); 643 if (rc2) 644 goto reset_nic_up_write; 645 } 646 647 restore_filters: 648 if (vf->efx) { 649 rc2 = vf->efx->type->filter_table_probe(vf->efx); 650 if (rc2) 651 goto reset_nic_up_write; 652 653 up_write(&vf->efx->filter_sem); 654 mutex_unlock(&vf->efx->mac_lock); 655 656 rc2 = efx_net_open(vf->efx->net_dev); 657 if (rc2) 658 goto reset_nic; 659 660 efx_device_attach_if_not_resetting(vf->efx); 661 } 662 return rc; 663 664 reset_nic_up_write: 665 if (vf->efx) { 666 up_write(&vf->efx->filter_sem); 667 mutex_unlock(&vf->efx->mac_lock); 668 } 669 reset_nic: 670 if (vf->efx) { 671 netif_err(efx, drv, efx->net_dev, 672 "Failed to restore VF - scheduling reset.\n"); 673 efx_schedule_reset(vf->efx, RESET_TYPE_DATAPATH); 674 } else { 675 netif_err(efx, drv, efx->net_dev, 676 "Failed to restore the VF and cannot reset the VF " 677 "- VF is not functional.\n"); 678 netif_err(efx, drv, efx->net_dev, 679 "Please reload the driver attached to the VF.\n"); 680 } 681 682 return rc ? rc : rc2; 683 } 684 685 static int efx_ef10_sriov_set_privilege_mask(struct efx_nic *efx, int vf_i, 686 u32 mask, u32 value) 687 { 688 MCDI_DECLARE_BUF(pm_outbuf, MC_CMD_PRIVILEGE_MASK_OUT_LEN); 689 MCDI_DECLARE_BUF(pm_inbuf, MC_CMD_PRIVILEGE_MASK_IN_LEN); 690 struct efx_ef10_nic_data *nic_data = efx->nic_data; 691 u32 old_mask, new_mask; 692 size_t outlen; 693 int rc; 694 695 EFX_WARN_ON_PARANOID((value & ~mask) != 0); 696 697 /* Get privilege mask */ 698 MCDI_POPULATE_DWORD_2(pm_inbuf, PRIVILEGE_MASK_IN_FUNCTION, 699 PRIVILEGE_MASK_IN_FUNCTION_PF, nic_data->pf_index, 700 PRIVILEGE_MASK_IN_FUNCTION_VF, vf_i); 701 702 rc = efx_mcdi_rpc(efx, MC_CMD_PRIVILEGE_MASK, 703 pm_inbuf, sizeof(pm_inbuf), 704 pm_outbuf, sizeof(pm_outbuf), &outlen); 705 706 if (rc != 0) 707 return rc; 708 if (outlen != MC_CMD_PRIVILEGE_MASK_OUT_LEN) 709 return -EIO; 710 711 old_mask = MCDI_DWORD(pm_outbuf, PRIVILEGE_MASK_OUT_OLD_MASK); 712 713 new_mask = old_mask & ~mask; 714 new_mask |= value; 715 716 if (new_mask == old_mask) 717 return 0; 718 719 new_mask |= MC_CMD_PRIVILEGE_MASK_IN_DO_CHANGE; 720 721 /* Set privilege mask */ 722 MCDI_SET_DWORD(pm_inbuf, PRIVILEGE_MASK_IN_NEW_MASK, new_mask); 723 724 rc = efx_mcdi_rpc(efx, MC_CMD_PRIVILEGE_MASK, 725 pm_inbuf, sizeof(pm_inbuf), 726 pm_outbuf, sizeof(pm_outbuf), &outlen); 727 728 if (rc != 0) 729 return rc; 730 if (outlen != MC_CMD_PRIVILEGE_MASK_OUT_LEN) 731 return -EIO; 732 733 return 0; 734 } 735 736 int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i, bool spoofchk) 737 { 738 struct efx_ef10_nic_data *nic_data = efx->nic_data; 739 740 /* Can't enable spoofchk if firmware doesn't support it. */ 741 if (!(nic_data->datapath_caps & 742 BIT(MC_CMD_GET_CAPABILITIES_OUT_TX_MAC_SECURITY_FILTERING_LBN)) && 743 spoofchk) 744 return -EOPNOTSUPP; 745 746 return efx_ef10_sriov_set_privilege_mask(efx, vf_i, 747 MC_CMD_PRIVILEGE_MASK_IN_GRP_MAC_SPOOFING_TX, 748 spoofchk ? 0 : MC_CMD_PRIVILEGE_MASK_IN_GRP_MAC_SPOOFING_TX); 749 } 750 751 int efx_ef10_sriov_set_vf_link_state(struct efx_nic *efx, int vf_i, 752 int link_state) 753 { 754 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN); 755 struct efx_ef10_nic_data *nic_data = efx->nic_data; 756 757 BUILD_BUG_ON(IFLA_VF_LINK_STATE_AUTO != 758 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_AUTO); 759 BUILD_BUG_ON(IFLA_VF_LINK_STATE_ENABLE != 760 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_UP); 761 BUILD_BUG_ON(IFLA_VF_LINK_STATE_DISABLE != 762 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_DOWN); 763 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION, 764 LINK_STATE_MODE_IN_FUNCTION_PF, 765 nic_data->pf_index, 766 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i); 767 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, link_state); 768 return efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf), 769 NULL, 0, NULL); /* don't care what old mode was */ 770 } 771 772 int efx_ef10_sriov_get_vf_config(struct efx_nic *efx, int vf_i, 773 struct ifla_vf_info *ivf) 774 { 775 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN); 776 MCDI_DECLARE_BUF(outbuf, MC_CMD_LINK_STATE_MODE_OUT_LEN); 777 778 struct efx_ef10_nic_data *nic_data = efx->nic_data; 779 struct ef10_vf *vf; 780 size_t outlen; 781 int rc; 782 783 if (vf_i >= efx->vf_count) 784 return -EINVAL; 785 786 if (!nic_data->vf) 787 return -EOPNOTSUPP; 788 789 vf = nic_data->vf + vf_i; 790 791 ivf->vf = vf_i; 792 ivf->min_tx_rate = 0; 793 ivf->max_tx_rate = 0; 794 ether_addr_copy(ivf->mac, vf->mac); 795 ivf->vlan = (vf->vlan == EFX_EF10_NO_VLAN) ? 0 : vf->vlan; 796 ivf->qos = 0; 797 798 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION, 799 LINK_STATE_MODE_IN_FUNCTION_PF, 800 nic_data->pf_index, 801 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i); 802 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, 803 MC_CMD_LINK_STATE_MODE_IN_DO_NOT_CHANGE); 804 rc = efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf), 805 outbuf, sizeof(outbuf), &outlen); 806 if (rc) 807 return rc; 808 if (outlen < MC_CMD_LINK_STATE_MODE_OUT_LEN) 809 return -EIO; 810 ivf->linkstate = MCDI_DWORD(outbuf, LINK_STATE_MODE_OUT_OLD_MODE); 811 812 return 0; 813 } 814