1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ 3 4 #include <linux/ethtool.h> 5 #include <linux/printk.h> 6 #include <linux/dynamic_debug.h> 7 #include <linux/netdevice.h> 8 #include <linux/etherdevice.h> 9 #include <linux/if_vlan.h> 10 #include <linux/rtnetlink.h> 11 #include <linux/interrupt.h> 12 #include <linux/pci.h> 13 #include <linux/cpumask.h> 14 #include <linux/crash_dump.h> 15 #include <linux/vmalloc.h> 16 17 #include "ionic.h" 18 #include "ionic_bus.h" 19 #include "ionic_dev.h" 20 #include "ionic_lif.h" 21 #include "ionic_txrx.h" 22 #include "ionic_ethtool.h" 23 #include "ionic_debugfs.h" 24 25 /* queuetype support level */ 26 static const u8 ionic_qtype_versions[IONIC_QTYPE_MAX] = { 27 [IONIC_QTYPE_ADMINQ] = 0, /* 0 = Base version with CQ support */ 28 [IONIC_QTYPE_NOTIFYQ] = 0, /* 0 = Base version */ 29 [IONIC_QTYPE_RXQ] = 2, /* 0 = Base version with CQ+SG support 30 * 2 = ... with CMB rings 31 */ 32 [IONIC_QTYPE_TXQ] = 3, /* 0 = Base version with CQ+SG support 33 * 1 = ... with Tx SG version 1 34 * 3 = ... with CMB rings 35 */ 36 }; 37 38 static void ionic_link_status_check(struct ionic_lif *lif); 39 static void ionic_lif_handle_fw_down(struct ionic_lif *lif); 40 static void ionic_lif_handle_fw_up(struct ionic_lif *lif); 41 static void ionic_lif_set_netdev_info(struct ionic_lif *lif); 42 43 static void ionic_txrx_deinit(struct ionic_lif *lif); 44 static int ionic_txrx_init(struct ionic_lif *lif); 45 static int ionic_start_queues(struct ionic_lif *lif); 46 static void ionic_stop_queues(struct ionic_lif *lif); 47 static void ionic_lif_queue_identify(struct ionic_lif *lif); 48 49 static void ionic_dim_work(struct work_struct *work) 50 { 51 struct dim *dim = container_of(work, struct dim, work); 52 struct ionic_intr_info *intr; 53 struct dim_cq_moder cur_moder; 54 struct ionic_qcq *qcq; 55 struct ionic_lif *lif; 56 u32 new_coal; 57 58 cur_moder = net_dim_get_rx_moderation(dim->mode, dim->profile_ix); 59 qcq = container_of(dim, struct ionic_qcq, dim); 60 lif = qcq->q.lif; 61 new_coal = ionic_coal_usec_to_hw(lif->ionic, cur_moder.usec); 62 new_coal = new_coal ? new_coal : 1; 63 64 intr = &qcq->intr; 65 if (intr->dim_coal_hw != new_coal) { 66 intr->dim_coal_hw = new_coal; 67 68 ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, 69 intr->index, intr->dim_coal_hw); 70 } 71 72 dim->state = DIM_START_MEASURE; 73 } 74 75 static void ionic_lif_deferred_work(struct work_struct *work) 76 { 77 struct ionic_lif *lif = container_of(work, struct ionic_lif, deferred.work); 78 struct ionic_deferred *def = &lif->deferred; 79 struct ionic_deferred_work *w = NULL; 80 81 do { 82 spin_lock_bh(&def->lock); 83 if (!list_empty(&def->list)) { 84 w = list_first_entry(&def->list, 85 struct ionic_deferred_work, list); 86 list_del(&w->list); 87 } 88 spin_unlock_bh(&def->lock); 89 90 if (!w) 91 break; 92 93 switch (w->type) { 94 case IONIC_DW_TYPE_RX_MODE: 95 ionic_lif_rx_mode(lif); 96 break; 97 case IONIC_DW_TYPE_LINK_STATUS: 98 ionic_link_status_check(lif); 99 break; 100 case IONIC_DW_TYPE_LIF_RESET: 101 if (w->fw_status) { 102 ionic_lif_handle_fw_up(lif); 103 } else { 104 ionic_lif_handle_fw_down(lif); 105 106 /* Fire off another watchdog to see 107 * if the FW is already back rather than 108 * waiting another whole cycle 109 */ 110 mod_timer(&lif->ionic->watchdog_timer, jiffies + 1); 111 } 112 break; 113 default: 114 break; 115 } 116 kfree(w); 117 w = NULL; 118 } while (true); 119 } 120 121 void ionic_lif_deferred_enqueue(struct ionic_deferred *def, 122 struct ionic_deferred_work *work) 123 { 124 spin_lock_bh(&def->lock); 125 list_add_tail(&work->list, &def->list); 126 spin_unlock_bh(&def->lock); 127 schedule_work(&def->work); 128 } 129 130 static void ionic_link_status_check(struct ionic_lif *lif) 131 { 132 struct net_device *netdev = lif->netdev; 133 u16 link_status; 134 bool link_up; 135 136 if (!test_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state)) 137 return; 138 139 /* Don't put carrier back up if we're in a broken state */ 140 if (test_bit(IONIC_LIF_F_BROKEN, lif->state)) { 141 clear_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state); 142 return; 143 } 144 145 link_status = le16_to_cpu(lif->info->status.link_status); 146 link_up = link_status == IONIC_PORT_OPER_STATUS_UP; 147 148 if (link_up) { 149 int err = 0; 150 151 if (netdev->flags & IFF_UP && netif_running(netdev)) { 152 mutex_lock(&lif->queue_lock); 153 err = ionic_start_queues(lif); 154 if (err && err != -EBUSY) { 155 netdev_err(netdev, 156 "Failed to start queues: %d\n", err); 157 set_bit(IONIC_LIF_F_BROKEN, lif->state); 158 netif_carrier_off(lif->netdev); 159 } 160 mutex_unlock(&lif->queue_lock); 161 } 162 163 if (!err && !netif_carrier_ok(netdev)) { 164 ionic_port_identify(lif->ionic); 165 netdev_info(netdev, "Link up - %d Gbps\n", 166 le32_to_cpu(lif->info->status.link_speed) / 1000); 167 netif_carrier_on(netdev); 168 } 169 } else { 170 if (netif_carrier_ok(netdev)) { 171 lif->link_down_count++; 172 netdev_info(netdev, "Link down\n"); 173 netif_carrier_off(netdev); 174 } 175 176 if (netdev->flags & IFF_UP && netif_running(netdev)) { 177 mutex_lock(&lif->queue_lock); 178 ionic_stop_queues(lif); 179 mutex_unlock(&lif->queue_lock); 180 } 181 } 182 183 clear_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state); 184 } 185 186 void ionic_link_status_check_request(struct ionic_lif *lif, bool can_sleep) 187 { 188 struct ionic_deferred_work *work; 189 190 /* we only need one request outstanding at a time */ 191 if (test_and_set_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state)) 192 return; 193 194 if (!can_sleep) { 195 work = kzalloc(sizeof(*work), GFP_ATOMIC); 196 if (!work) { 197 clear_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state); 198 return; 199 } 200 201 work->type = IONIC_DW_TYPE_LINK_STATUS; 202 ionic_lif_deferred_enqueue(&lif->deferred, work); 203 } else { 204 ionic_link_status_check(lif); 205 } 206 } 207 208 static void ionic_napi_deadline(struct timer_list *timer) 209 { 210 struct ionic_qcq *qcq = container_of(timer, struct ionic_qcq, napi_deadline); 211 212 napi_schedule(&qcq->napi); 213 } 214 215 static irqreturn_t ionic_isr(int irq, void *data) 216 { 217 struct napi_struct *napi = data; 218 219 napi_schedule_irqoff(napi); 220 221 return IRQ_HANDLED; 222 } 223 224 static int ionic_request_irq(struct ionic_lif *lif, struct ionic_qcq *qcq) 225 { 226 struct ionic_intr_info *intr = &qcq->intr; 227 struct device *dev = lif->ionic->dev; 228 struct ionic_queue *q = &qcq->q; 229 const char *name; 230 231 if (lif->registered) 232 name = lif->netdev->name; 233 else 234 name = dev_name(dev); 235 236 snprintf(intr->name, sizeof(intr->name), 237 "%.5s-%.16s-%.8s", IONIC_DRV_NAME, name, q->name); 238 239 return devm_request_irq(dev, intr->vector, ionic_isr, 240 0, intr->name, &qcq->napi); 241 } 242 243 static int ionic_intr_alloc(struct ionic_lif *lif, struct ionic_intr_info *intr) 244 { 245 struct ionic *ionic = lif->ionic; 246 int index; 247 248 index = find_first_zero_bit(ionic->intrs, ionic->nintrs); 249 if (index == ionic->nintrs) { 250 netdev_warn(lif->netdev, "%s: no intr, index=%d nintrs=%d\n", 251 __func__, index, ionic->nintrs); 252 return -ENOSPC; 253 } 254 255 set_bit(index, ionic->intrs); 256 ionic_intr_init(&ionic->idev, intr, index); 257 258 return 0; 259 } 260 261 static void ionic_intr_free(struct ionic *ionic, int index) 262 { 263 if (index != IONIC_INTR_INDEX_NOT_ASSIGNED && index < ionic->nintrs) 264 clear_bit(index, ionic->intrs); 265 } 266 267 static int ionic_qcq_enable(struct ionic_qcq *qcq) 268 { 269 struct ionic_queue *q = &qcq->q; 270 struct ionic_lif *lif = q->lif; 271 struct ionic_dev *idev; 272 struct device *dev; 273 274 struct ionic_admin_ctx ctx = { 275 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 276 .cmd.q_control = { 277 .opcode = IONIC_CMD_Q_CONTROL, 278 .lif_index = cpu_to_le16(lif->index), 279 .type = q->type, 280 .index = cpu_to_le32(q->index), 281 .oper = IONIC_Q_ENABLE, 282 }, 283 }; 284 int ret; 285 286 idev = &lif->ionic->idev; 287 dev = lif->ionic->dev; 288 289 dev_dbg(dev, "q_enable.index %d q_enable.qtype %d\n", 290 ctx.cmd.q_control.index, ctx.cmd.q_control.type); 291 292 if (qcq->flags & IONIC_QCQ_F_INTR) 293 ionic_intr_clean(idev->intr_ctrl, qcq->intr.index); 294 295 ret = ionic_adminq_post_wait(lif, &ctx); 296 if (ret) 297 return ret; 298 299 if (qcq->flags & IONIC_QCQ_F_INTR) { 300 napi_enable(&qcq->napi); 301 irq_set_affinity_hint(qcq->intr.vector, 302 &qcq->intr.affinity_mask); 303 ionic_intr_mask(idev->intr_ctrl, qcq->intr.index, 304 IONIC_INTR_MASK_CLEAR); 305 } 306 307 return 0; 308 } 309 310 static int ionic_qcq_disable(struct ionic_lif *lif, struct ionic_qcq *qcq, int fw_err) 311 { 312 struct ionic_queue *q; 313 314 struct ionic_admin_ctx ctx = { 315 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 316 .cmd.q_control = { 317 .opcode = IONIC_CMD_Q_CONTROL, 318 .oper = IONIC_Q_DISABLE, 319 }, 320 }; 321 322 if (!qcq) { 323 netdev_err(lif->netdev, "%s: bad qcq\n", __func__); 324 return -ENXIO; 325 } 326 327 q = &qcq->q; 328 329 if (qcq->flags & IONIC_QCQ_F_INTR) { 330 struct ionic_dev *idev = &lif->ionic->idev; 331 332 cancel_work_sync(&qcq->dim.work); 333 ionic_intr_mask(idev->intr_ctrl, qcq->intr.index, 334 IONIC_INTR_MASK_SET); 335 synchronize_irq(qcq->intr.vector); 336 irq_set_affinity_hint(qcq->intr.vector, NULL); 337 napi_disable(&qcq->napi); 338 del_timer_sync(&qcq->napi_deadline); 339 } 340 341 /* If there was a previous fw communcation error, don't bother with 342 * sending the adminq command and just return the same error value. 343 */ 344 if (fw_err == -ETIMEDOUT || fw_err == -ENXIO) 345 return fw_err; 346 347 ctx.cmd.q_control.lif_index = cpu_to_le16(lif->index); 348 ctx.cmd.q_control.type = q->type; 349 ctx.cmd.q_control.index = cpu_to_le32(q->index); 350 dev_dbg(lif->ionic->dev, "q_disable.index %d q_disable.qtype %d\n", 351 ctx.cmd.q_control.index, ctx.cmd.q_control.type); 352 353 return ionic_adminq_post_wait(lif, &ctx); 354 } 355 356 static void ionic_lif_qcq_deinit(struct ionic_lif *lif, struct ionic_qcq *qcq) 357 { 358 struct ionic_dev *idev = &lif->ionic->idev; 359 360 if (!qcq) 361 return; 362 363 if (!(qcq->flags & IONIC_QCQ_F_INITED)) 364 return; 365 366 if (qcq->flags & IONIC_QCQ_F_INTR) { 367 ionic_intr_mask(idev->intr_ctrl, qcq->intr.index, 368 IONIC_INTR_MASK_SET); 369 netif_napi_del(&qcq->napi); 370 } 371 372 qcq->flags &= ~IONIC_QCQ_F_INITED; 373 } 374 375 static void ionic_qcq_intr_free(struct ionic_lif *lif, struct ionic_qcq *qcq) 376 { 377 if (!(qcq->flags & IONIC_QCQ_F_INTR) || qcq->intr.vector == 0) 378 return; 379 380 irq_set_affinity_hint(qcq->intr.vector, NULL); 381 devm_free_irq(lif->ionic->dev, qcq->intr.vector, &qcq->napi); 382 qcq->intr.vector = 0; 383 ionic_intr_free(lif->ionic, qcq->intr.index); 384 qcq->intr.index = IONIC_INTR_INDEX_NOT_ASSIGNED; 385 } 386 387 static void ionic_qcq_free(struct ionic_lif *lif, struct ionic_qcq *qcq) 388 { 389 struct device *dev = lif->ionic->dev; 390 391 if (!qcq) 392 return; 393 394 ionic_debugfs_del_qcq(qcq); 395 396 if (qcq->q_base) { 397 dma_free_coherent(dev, qcq->q_size, qcq->q_base, qcq->q_base_pa); 398 qcq->q_base = NULL; 399 qcq->q_base_pa = 0; 400 } 401 402 if (qcq->cmb_q_base) { 403 iounmap(qcq->cmb_q_base); 404 ionic_put_cmb(lif, qcq->cmb_pgid, qcq->cmb_order); 405 qcq->cmb_pgid = 0; 406 qcq->cmb_order = 0; 407 qcq->cmb_q_base = NULL; 408 qcq->cmb_q_base_pa = 0; 409 } 410 411 if (qcq->cq_base) { 412 dma_free_coherent(dev, qcq->cq_size, qcq->cq_base, qcq->cq_base_pa); 413 qcq->cq_base = NULL; 414 qcq->cq_base_pa = 0; 415 } 416 417 if (qcq->sg_base) { 418 dma_free_coherent(dev, qcq->sg_size, qcq->sg_base, qcq->sg_base_pa); 419 qcq->sg_base = NULL; 420 qcq->sg_base_pa = 0; 421 } 422 423 ionic_qcq_intr_free(lif, qcq); 424 425 if (qcq->cq.info) { 426 vfree(qcq->cq.info); 427 qcq->cq.info = NULL; 428 } 429 if (qcq->q.info) { 430 vfree(qcq->q.info); 431 qcq->q.info = NULL; 432 } 433 } 434 435 void ionic_qcqs_free(struct ionic_lif *lif) 436 { 437 struct device *dev = lif->ionic->dev; 438 struct ionic_qcq *adminqcq; 439 unsigned long irqflags; 440 441 if (lif->notifyqcq) { 442 ionic_qcq_free(lif, lif->notifyqcq); 443 devm_kfree(dev, lif->notifyqcq); 444 lif->notifyqcq = NULL; 445 } 446 447 if (lif->adminqcq) { 448 spin_lock_irqsave(&lif->adminq_lock, irqflags); 449 adminqcq = READ_ONCE(lif->adminqcq); 450 lif->adminqcq = NULL; 451 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 452 if (adminqcq) { 453 ionic_qcq_free(lif, adminqcq); 454 devm_kfree(dev, adminqcq); 455 } 456 } 457 458 if (lif->rxqcqs) { 459 devm_kfree(dev, lif->rxqstats); 460 lif->rxqstats = NULL; 461 devm_kfree(dev, lif->rxqcqs); 462 lif->rxqcqs = NULL; 463 } 464 465 if (lif->txqcqs) { 466 devm_kfree(dev, lif->txqstats); 467 lif->txqstats = NULL; 468 devm_kfree(dev, lif->txqcqs); 469 lif->txqcqs = NULL; 470 } 471 } 472 473 static void ionic_link_qcq_interrupts(struct ionic_qcq *src_qcq, 474 struct ionic_qcq *n_qcq) 475 { 476 n_qcq->intr.vector = src_qcq->intr.vector; 477 n_qcq->intr.index = src_qcq->intr.index; 478 n_qcq->napi_qcq = src_qcq->napi_qcq; 479 } 480 481 static int ionic_alloc_qcq_interrupt(struct ionic_lif *lif, struct ionic_qcq *qcq) 482 { 483 int err; 484 485 if (!(qcq->flags & IONIC_QCQ_F_INTR)) { 486 qcq->intr.index = IONIC_INTR_INDEX_NOT_ASSIGNED; 487 return 0; 488 } 489 490 err = ionic_intr_alloc(lif, &qcq->intr); 491 if (err) { 492 netdev_warn(lif->netdev, "no intr for %s: %d\n", 493 qcq->q.name, err); 494 goto err_out; 495 } 496 497 err = ionic_bus_get_irq(lif->ionic, qcq->intr.index); 498 if (err < 0) { 499 netdev_warn(lif->netdev, "no vector for %s: %d\n", 500 qcq->q.name, err); 501 goto err_out_free_intr; 502 } 503 qcq->intr.vector = err; 504 ionic_intr_mask_assert(lif->ionic->idev.intr_ctrl, qcq->intr.index, 505 IONIC_INTR_MASK_SET); 506 507 err = ionic_request_irq(lif, qcq); 508 if (err) { 509 netdev_warn(lif->netdev, "irq request failed %d\n", err); 510 goto err_out_free_intr; 511 } 512 513 /* try to get the irq on the local numa node first */ 514 qcq->intr.cpu = cpumask_local_spread(qcq->intr.index, 515 dev_to_node(lif->ionic->dev)); 516 if (qcq->intr.cpu != -1) 517 cpumask_set_cpu(qcq->intr.cpu, &qcq->intr.affinity_mask); 518 519 netdev_dbg(lif->netdev, "%s: Interrupt index %d\n", qcq->q.name, qcq->intr.index); 520 return 0; 521 522 err_out_free_intr: 523 ionic_intr_free(lif->ionic, qcq->intr.index); 524 err_out: 525 return err; 526 } 527 528 static int ionic_qcq_alloc(struct ionic_lif *lif, unsigned int type, 529 unsigned int index, 530 const char *name, unsigned int flags, 531 unsigned int num_descs, unsigned int desc_size, 532 unsigned int cq_desc_size, 533 unsigned int sg_desc_size, 534 unsigned int pid, struct ionic_qcq **qcq) 535 { 536 struct ionic_dev *idev = &lif->ionic->idev; 537 struct device *dev = lif->ionic->dev; 538 void *q_base, *cq_base, *sg_base; 539 dma_addr_t cq_base_pa = 0; 540 dma_addr_t sg_base_pa = 0; 541 dma_addr_t q_base_pa = 0; 542 struct ionic_qcq *new; 543 int err; 544 545 *qcq = NULL; 546 547 new = devm_kzalloc(dev, sizeof(*new), GFP_KERNEL); 548 if (!new) { 549 netdev_err(lif->netdev, "Cannot allocate queue structure\n"); 550 err = -ENOMEM; 551 goto err_out; 552 } 553 554 new->q.dev = dev; 555 new->flags = flags; 556 557 new->q.info = vcalloc(num_descs, sizeof(*new->q.info)); 558 if (!new->q.info) { 559 netdev_err(lif->netdev, "Cannot allocate queue info\n"); 560 err = -ENOMEM; 561 goto err_out_free_qcq; 562 } 563 564 new->q.type = type; 565 new->q.max_sg_elems = lif->qtype_info[type].max_sg_elems; 566 567 err = ionic_q_init(lif, idev, &new->q, index, name, num_descs, 568 desc_size, sg_desc_size, pid); 569 if (err) { 570 netdev_err(lif->netdev, "Cannot initialize queue\n"); 571 goto err_out_free_q_info; 572 } 573 574 err = ionic_alloc_qcq_interrupt(lif, new); 575 if (err) 576 goto err_out; 577 578 new->cq.info = vcalloc(num_descs, sizeof(*new->cq.info)); 579 if (!new->cq.info) { 580 netdev_err(lif->netdev, "Cannot allocate completion queue info\n"); 581 err = -ENOMEM; 582 goto err_out_free_irq; 583 } 584 585 err = ionic_cq_init(lif, &new->cq, &new->intr, num_descs, cq_desc_size); 586 if (err) { 587 netdev_err(lif->netdev, "Cannot initialize completion queue\n"); 588 goto err_out_free_cq_info; 589 } 590 591 if (flags & IONIC_QCQ_F_NOTIFYQ) { 592 int q_size; 593 594 /* q & cq need to be contiguous in NotifyQ, so alloc it all in q 595 * and don't alloc qc. We leave new->qc_size and new->qc_base 596 * as 0 to be sure we don't try to free it later. 597 */ 598 q_size = ALIGN(num_descs * desc_size, PAGE_SIZE); 599 new->q_size = PAGE_SIZE + q_size + 600 ALIGN(num_descs * cq_desc_size, PAGE_SIZE); 601 new->q_base = dma_alloc_coherent(dev, new->q_size, 602 &new->q_base_pa, GFP_KERNEL); 603 if (!new->q_base) { 604 netdev_err(lif->netdev, "Cannot allocate qcq DMA memory\n"); 605 err = -ENOMEM; 606 goto err_out_free_cq_info; 607 } 608 q_base = PTR_ALIGN(new->q_base, PAGE_SIZE); 609 q_base_pa = ALIGN(new->q_base_pa, PAGE_SIZE); 610 ionic_q_map(&new->q, q_base, q_base_pa); 611 612 cq_base = PTR_ALIGN(q_base + q_size, PAGE_SIZE); 613 cq_base_pa = ALIGN(new->q_base_pa + q_size, PAGE_SIZE); 614 ionic_cq_map(&new->cq, cq_base, cq_base_pa); 615 ionic_cq_bind(&new->cq, &new->q); 616 } else { 617 /* regular DMA q descriptors */ 618 new->q_size = PAGE_SIZE + (num_descs * desc_size); 619 new->q_base = dma_alloc_coherent(dev, new->q_size, &new->q_base_pa, 620 GFP_KERNEL); 621 if (!new->q_base) { 622 netdev_err(lif->netdev, "Cannot allocate queue DMA memory\n"); 623 err = -ENOMEM; 624 goto err_out_free_cq_info; 625 } 626 q_base = PTR_ALIGN(new->q_base, PAGE_SIZE); 627 q_base_pa = ALIGN(new->q_base_pa, PAGE_SIZE); 628 ionic_q_map(&new->q, q_base, q_base_pa); 629 630 if (flags & IONIC_QCQ_F_CMB_RINGS) { 631 /* on-chip CMB q descriptors */ 632 new->cmb_q_size = num_descs * desc_size; 633 new->cmb_order = order_base_2(new->cmb_q_size / PAGE_SIZE); 634 635 err = ionic_get_cmb(lif, &new->cmb_pgid, &new->cmb_q_base_pa, 636 new->cmb_order); 637 if (err) { 638 netdev_err(lif->netdev, 639 "Cannot allocate queue order %d from cmb: err %d\n", 640 new->cmb_order, err); 641 goto err_out_free_q; 642 } 643 644 new->cmb_q_base = ioremap_wc(new->cmb_q_base_pa, new->cmb_q_size); 645 if (!new->cmb_q_base) { 646 netdev_err(lif->netdev, "Cannot map queue from cmb\n"); 647 ionic_put_cmb(lif, new->cmb_pgid, new->cmb_order); 648 err = -ENOMEM; 649 goto err_out_free_q; 650 } 651 652 new->cmb_q_base_pa -= idev->phy_cmb_pages; 653 ionic_q_cmb_map(&new->q, new->cmb_q_base, new->cmb_q_base_pa); 654 } 655 656 /* cq DMA descriptors */ 657 new->cq_size = PAGE_SIZE + (num_descs * cq_desc_size); 658 new->cq_base = dma_alloc_coherent(dev, new->cq_size, &new->cq_base_pa, 659 GFP_KERNEL); 660 if (!new->cq_base) { 661 netdev_err(lif->netdev, "Cannot allocate cq DMA memory\n"); 662 err = -ENOMEM; 663 goto err_out_free_q; 664 } 665 cq_base = PTR_ALIGN(new->cq_base, PAGE_SIZE); 666 cq_base_pa = ALIGN(new->cq_base_pa, PAGE_SIZE); 667 ionic_cq_map(&new->cq, cq_base, cq_base_pa); 668 ionic_cq_bind(&new->cq, &new->q); 669 } 670 671 if (flags & IONIC_QCQ_F_SG) { 672 new->sg_size = PAGE_SIZE + (num_descs * sg_desc_size); 673 new->sg_base = dma_alloc_coherent(dev, new->sg_size, &new->sg_base_pa, 674 GFP_KERNEL); 675 if (!new->sg_base) { 676 netdev_err(lif->netdev, "Cannot allocate sg DMA memory\n"); 677 err = -ENOMEM; 678 goto err_out_free_cq; 679 } 680 sg_base = PTR_ALIGN(new->sg_base, PAGE_SIZE); 681 sg_base_pa = ALIGN(new->sg_base_pa, PAGE_SIZE); 682 ionic_q_sg_map(&new->q, sg_base, sg_base_pa); 683 } 684 685 INIT_WORK(&new->dim.work, ionic_dim_work); 686 new->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE; 687 688 *qcq = new; 689 690 return 0; 691 692 err_out_free_cq: 693 dma_free_coherent(dev, new->cq_size, new->cq_base, new->cq_base_pa); 694 err_out_free_q: 695 if (new->cmb_q_base) { 696 iounmap(new->cmb_q_base); 697 ionic_put_cmb(lif, new->cmb_pgid, new->cmb_order); 698 } 699 dma_free_coherent(dev, new->q_size, new->q_base, new->q_base_pa); 700 err_out_free_cq_info: 701 vfree(new->cq.info); 702 err_out_free_irq: 703 if (flags & IONIC_QCQ_F_INTR) { 704 devm_free_irq(dev, new->intr.vector, &new->napi); 705 ionic_intr_free(lif->ionic, new->intr.index); 706 } 707 err_out_free_q_info: 708 vfree(new->q.info); 709 err_out_free_qcq: 710 devm_kfree(dev, new); 711 err_out: 712 dev_err(dev, "qcq alloc of %s%d failed %d\n", name, index, err); 713 return err; 714 } 715 716 static int ionic_qcqs_alloc(struct ionic_lif *lif) 717 { 718 struct device *dev = lif->ionic->dev; 719 unsigned int flags; 720 int err; 721 722 flags = IONIC_QCQ_F_INTR; 723 err = ionic_qcq_alloc(lif, IONIC_QTYPE_ADMINQ, 0, "admin", flags, 724 IONIC_ADMINQ_LENGTH, 725 sizeof(struct ionic_admin_cmd), 726 sizeof(struct ionic_admin_comp), 727 0, lif->kern_pid, &lif->adminqcq); 728 if (err) 729 return err; 730 ionic_debugfs_add_qcq(lif, lif->adminqcq); 731 732 if (lif->ionic->nnqs_per_lif) { 733 flags = IONIC_QCQ_F_NOTIFYQ; 734 err = ionic_qcq_alloc(lif, IONIC_QTYPE_NOTIFYQ, 0, "notifyq", 735 flags, IONIC_NOTIFYQ_LENGTH, 736 sizeof(struct ionic_notifyq_cmd), 737 sizeof(union ionic_notifyq_comp), 738 0, lif->kern_pid, &lif->notifyqcq); 739 if (err) 740 goto err_out; 741 ionic_debugfs_add_qcq(lif, lif->notifyqcq); 742 743 /* Let the notifyq ride on the adminq interrupt */ 744 ionic_link_qcq_interrupts(lif->adminqcq, lif->notifyqcq); 745 } 746 747 err = -ENOMEM; 748 lif->txqcqs = devm_kcalloc(dev, lif->ionic->ntxqs_per_lif, 749 sizeof(*lif->txqcqs), GFP_KERNEL); 750 if (!lif->txqcqs) 751 goto err_out; 752 lif->rxqcqs = devm_kcalloc(dev, lif->ionic->nrxqs_per_lif, 753 sizeof(*lif->rxqcqs), GFP_KERNEL); 754 if (!lif->rxqcqs) 755 goto err_out; 756 757 lif->txqstats = devm_kcalloc(dev, lif->ionic->ntxqs_per_lif + 1, 758 sizeof(*lif->txqstats), GFP_KERNEL); 759 if (!lif->txqstats) 760 goto err_out; 761 lif->rxqstats = devm_kcalloc(dev, lif->ionic->nrxqs_per_lif + 1, 762 sizeof(*lif->rxqstats), GFP_KERNEL); 763 if (!lif->rxqstats) 764 goto err_out; 765 766 return 0; 767 768 err_out: 769 ionic_qcqs_free(lif); 770 return err; 771 } 772 773 static void ionic_qcq_sanitize(struct ionic_qcq *qcq) 774 { 775 qcq->q.tail_idx = 0; 776 qcq->q.head_idx = 0; 777 qcq->cq.tail_idx = 0; 778 qcq->cq.done_color = 1; 779 memset(qcq->q_base, 0, qcq->q_size); 780 if (qcq->cmb_q_base) 781 memset_io(qcq->cmb_q_base, 0, qcq->cmb_q_size); 782 memset(qcq->cq_base, 0, qcq->cq_size); 783 memset(qcq->sg_base, 0, qcq->sg_size); 784 } 785 786 static int ionic_lif_txq_init(struct ionic_lif *lif, struct ionic_qcq *qcq) 787 { 788 struct device *dev = lif->ionic->dev; 789 struct ionic_queue *q = &qcq->q; 790 struct ionic_cq *cq = &qcq->cq; 791 struct ionic_admin_ctx ctx = { 792 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 793 .cmd.q_init = { 794 .opcode = IONIC_CMD_Q_INIT, 795 .lif_index = cpu_to_le16(lif->index), 796 .type = q->type, 797 .ver = lif->qtype_info[q->type].version, 798 .index = cpu_to_le32(q->index), 799 .flags = cpu_to_le16(IONIC_QINIT_F_IRQ | 800 IONIC_QINIT_F_SG), 801 .intr_index = cpu_to_le16(qcq->intr.index), 802 .pid = cpu_to_le16(q->pid), 803 .ring_size = ilog2(q->num_descs), 804 .ring_base = cpu_to_le64(q->base_pa), 805 .cq_ring_base = cpu_to_le64(cq->base_pa), 806 .sg_ring_base = cpu_to_le64(q->sg_base_pa), 807 .features = cpu_to_le64(q->features), 808 }, 809 }; 810 int err; 811 812 if (qcq->flags & IONIC_QCQ_F_CMB_RINGS) { 813 ctx.cmd.q_init.flags |= cpu_to_le16(IONIC_QINIT_F_CMB); 814 ctx.cmd.q_init.ring_base = cpu_to_le64(qcq->cmb_q_base_pa); 815 } 816 817 dev_dbg(dev, "txq_init.pid %d\n", ctx.cmd.q_init.pid); 818 dev_dbg(dev, "txq_init.index %d\n", ctx.cmd.q_init.index); 819 dev_dbg(dev, "txq_init.ring_base 0x%llx\n", ctx.cmd.q_init.ring_base); 820 dev_dbg(dev, "txq_init.ring_size %d\n", ctx.cmd.q_init.ring_size); 821 dev_dbg(dev, "txq_init.cq_ring_base 0x%llx\n", ctx.cmd.q_init.cq_ring_base); 822 dev_dbg(dev, "txq_init.sg_ring_base 0x%llx\n", ctx.cmd.q_init.sg_ring_base); 823 dev_dbg(dev, "txq_init.flags 0x%x\n", ctx.cmd.q_init.flags); 824 dev_dbg(dev, "txq_init.ver %d\n", ctx.cmd.q_init.ver); 825 dev_dbg(dev, "txq_init.intr_index %d\n", ctx.cmd.q_init.intr_index); 826 827 ionic_qcq_sanitize(qcq); 828 829 err = ionic_adminq_post_wait(lif, &ctx); 830 if (err) 831 return err; 832 833 q->hw_type = ctx.comp.q_init.hw_type; 834 q->hw_index = le32_to_cpu(ctx.comp.q_init.hw_index); 835 q->dbval = IONIC_DBELL_QID(q->hw_index); 836 837 dev_dbg(dev, "txq->hw_type %d\n", q->hw_type); 838 dev_dbg(dev, "txq->hw_index %d\n", q->hw_index); 839 840 q->dbell_deadline = IONIC_TX_DOORBELL_DEADLINE; 841 q->dbell_jiffies = jiffies; 842 843 if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) { 844 netif_napi_add(lif->netdev, &qcq->napi, ionic_tx_napi); 845 qcq->napi_qcq = qcq; 846 timer_setup(&qcq->napi_deadline, ionic_napi_deadline, 0); 847 } 848 849 qcq->flags |= IONIC_QCQ_F_INITED; 850 851 return 0; 852 } 853 854 static int ionic_lif_rxq_init(struct ionic_lif *lif, struct ionic_qcq *qcq) 855 { 856 struct device *dev = lif->ionic->dev; 857 struct ionic_queue *q = &qcq->q; 858 struct ionic_cq *cq = &qcq->cq; 859 struct ionic_admin_ctx ctx = { 860 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 861 .cmd.q_init = { 862 .opcode = IONIC_CMD_Q_INIT, 863 .lif_index = cpu_to_le16(lif->index), 864 .type = q->type, 865 .ver = lif->qtype_info[q->type].version, 866 .index = cpu_to_le32(q->index), 867 .flags = cpu_to_le16(IONIC_QINIT_F_IRQ | 868 IONIC_QINIT_F_SG), 869 .intr_index = cpu_to_le16(cq->bound_intr->index), 870 .pid = cpu_to_le16(q->pid), 871 .ring_size = ilog2(q->num_descs), 872 .ring_base = cpu_to_le64(q->base_pa), 873 .cq_ring_base = cpu_to_le64(cq->base_pa), 874 .sg_ring_base = cpu_to_le64(q->sg_base_pa), 875 .features = cpu_to_le64(q->features), 876 }, 877 }; 878 int err; 879 880 if (qcq->flags & IONIC_QCQ_F_CMB_RINGS) { 881 ctx.cmd.q_init.flags |= cpu_to_le16(IONIC_QINIT_F_CMB); 882 ctx.cmd.q_init.ring_base = cpu_to_le64(qcq->cmb_q_base_pa); 883 } 884 885 dev_dbg(dev, "rxq_init.pid %d\n", ctx.cmd.q_init.pid); 886 dev_dbg(dev, "rxq_init.index %d\n", ctx.cmd.q_init.index); 887 dev_dbg(dev, "rxq_init.ring_base 0x%llx\n", ctx.cmd.q_init.ring_base); 888 dev_dbg(dev, "rxq_init.ring_size %d\n", ctx.cmd.q_init.ring_size); 889 dev_dbg(dev, "rxq_init.flags 0x%x\n", ctx.cmd.q_init.flags); 890 dev_dbg(dev, "rxq_init.ver %d\n", ctx.cmd.q_init.ver); 891 dev_dbg(dev, "rxq_init.intr_index %d\n", ctx.cmd.q_init.intr_index); 892 893 ionic_qcq_sanitize(qcq); 894 895 err = ionic_adminq_post_wait(lif, &ctx); 896 if (err) 897 return err; 898 899 q->hw_type = ctx.comp.q_init.hw_type; 900 q->hw_index = le32_to_cpu(ctx.comp.q_init.hw_index); 901 q->dbval = IONIC_DBELL_QID(q->hw_index); 902 903 dev_dbg(dev, "rxq->hw_type %d\n", q->hw_type); 904 dev_dbg(dev, "rxq->hw_index %d\n", q->hw_index); 905 906 q->dbell_deadline = IONIC_RX_MIN_DOORBELL_DEADLINE; 907 q->dbell_jiffies = jiffies; 908 909 if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) 910 netif_napi_add(lif->netdev, &qcq->napi, ionic_rx_napi); 911 else 912 netif_napi_add(lif->netdev, &qcq->napi, ionic_txrx_napi); 913 914 qcq->napi_qcq = qcq; 915 timer_setup(&qcq->napi_deadline, ionic_napi_deadline, 0); 916 917 qcq->flags |= IONIC_QCQ_F_INITED; 918 919 return 0; 920 } 921 922 int ionic_lif_create_hwstamp_txq(struct ionic_lif *lif) 923 { 924 unsigned int num_desc, desc_sz, comp_sz, sg_desc_sz; 925 unsigned int txq_i, flags; 926 struct ionic_qcq *txq; 927 u64 features; 928 int err; 929 930 if (lif->hwstamp_txq) 931 return 0; 932 933 features = IONIC_Q_F_2X_CQ_DESC | IONIC_TXQ_F_HWSTAMP; 934 935 num_desc = IONIC_MIN_TXRX_DESC; 936 desc_sz = sizeof(struct ionic_txq_desc); 937 comp_sz = 2 * sizeof(struct ionic_txq_comp); 938 939 if (lif->qtype_info[IONIC_QTYPE_TXQ].version >= 1 && 940 lif->qtype_info[IONIC_QTYPE_TXQ].sg_desc_sz == sizeof(struct ionic_txq_sg_desc_v1)) 941 sg_desc_sz = sizeof(struct ionic_txq_sg_desc_v1); 942 else 943 sg_desc_sz = sizeof(struct ionic_txq_sg_desc); 944 945 txq_i = lif->ionic->ntxqs_per_lif; 946 flags = IONIC_QCQ_F_TX_STATS | IONIC_QCQ_F_SG; 947 948 err = ionic_qcq_alloc(lif, IONIC_QTYPE_TXQ, txq_i, "hwstamp_tx", flags, 949 num_desc, desc_sz, comp_sz, sg_desc_sz, 950 lif->kern_pid, &txq); 951 if (err) 952 goto err_qcq_alloc; 953 954 txq->q.features = features; 955 956 ionic_link_qcq_interrupts(lif->adminqcq, txq); 957 ionic_debugfs_add_qcq(lif, txq); 958 959 lif->hwstamp_txq = txq; 960 961 if (netif_running(lif->netdev)) { 962 err = ionic_lif_txq_init(lif, txq); 963 if (err) 964 goto err_qcq_init; 965 966 if (test_bit(IONIC_LIF_F_UP, lif->state)) { 967 err = ionic_qcq_enable(txq); 968 if (err) 969 goto err_qcq_enable; 970 } 971 } 972 973 return 0; 974 975 err_qcq_enable: 976 ionic_lif_qcq_deinit(lif, txq); 977 err_qcq_init: 978 lif->hwstamp_txq = NULL; 979 ionic_debugfs_del_qcq(txq); 980 ionic_qcq_free(lif, txq); 981 devm_kfree(lif->ionic->dev, txq); 982 err_qcq_alloc: 983 return err; 984 } 985 986 int ionic_lif_create_hwstamp_rxq(struct ionic_lif *lif) 987 { 988 unsigned int num_desc, desc_sz, comp_sz, sg_desc_sz; 989 unsigned int rxq_i, flags; 990 struct ionic_qcq *rxq; 991 u64 features; 992 int err; 993 994 if (lif->hwstamp_rxq) 995 return 0; 996 997 features = IONIC_Q_F_2X_CQ_DESC | IONIC_RXQ_F_HWSTAMP; 998 999 num_desc = IONIC_MIN_TXRX_DESC; 1000 desc_sz = sizeof(struct ionic_rxq_desc); 1001 comp_sz = 2 * sizeof(struct ionic_rxq_comp); 1002 sg_desc_sz = sizeof(struct ionic_rxq_sg_desc); 1003 1004 rxq_i = lif->ionic->nrxqs_per_lif; 1005 flags = IONIC_QCQ_F_RX_STATS | IONIC_QCQ_F_SG; 1006 1007 err = ionic_qcq_alloc(lif, IONIC_QTYPE_RXQ, rxq_i, "hwstamp_rx", flags, 1008 num_desc, desc_sz, comp_sz, sg_desc_sz, 1009 lif->kern_pid, &rxq); 1010 if (err) 1011 goto err_qcq_alloc; 1012 1013 rxq->q.features = features; 1014 1015 ionic_link_qcq_interrupts(lif->adminqcq, rxq); 1016 ionic_debugfs_add_qcq(lif, rxq); 1017 1018 lif->hwstamp_rxq = rxq; 1019 1020 if (netif_running(lif->netdev)) { 1021 err = ionic_lif_rxq_init(lif, rxq); 1022 if (err) 1023 goto err_qcq_init; 1024 1025 if (test_bit(IONIC_LIF_F_UP, lif->state)) { 1026 ionic_rx_fill(&rxq->q); 1027 err = ionic_qcq_enable(rxq); 1028 if (err) 1029 goto err_qcq_enable; 1030 } 1031 } 1032 1033 return 0; 1034 1035 err_qcq_enable: 1036 ionic_lif_qcq_deinit(lif, rxq); 1037 err_qcq_init: 1038 lif->hwstamp_rxq = NULL; 1039 ionic_debugfs_del_qcq(rxq); 1040 ionic_qcq_free(lif, rxq); 1041 devm_kfree(lif->ionic->dev, rxq); 1042 err_qcq_alloc: 1043 return err; 1044 } 1045 1046 int ionic_lif_config_hwstamp_rxq_all(struct ionic_lif *lif, bool rx_all) 1047 { 1048 struct ionic_queue_params qparam; 1049 1050 ionic_init_queue_params(lif, &qparam); 1051 1052 if (rx_all) 1053 qparam.rxq_features = IONIC_Q_F_2X_CQ_DESC | IONIC_RXQ_F_HWSTAMP; 1054 else 1055 qparam.rxq_features = 0; 1056 1057 /* if we're not running, just set the values and return */ 1058 if (!netif_running(lif->netdev)) { 1059 lif->rxq_features = qparam.rxq_features; 1060 return 0; 1061 } 1062 1063 return ionic_reconfigure_queues(lif, &qparam); 1064 } 1065 1066 int ionic_lif_set_hwstamp_txmode(struct ionic_lif *lif, u16 txstamp_mode) 1067 { 1068 struct ionic_admin_ctx ctx = { 1069 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 1070 .cmd.lif_setattr = { 1071 .opcode = IONIC_CMD_LIF_SETATTR, 1072 .index = cpu_to_le16(lif->index), 1073 .attr = IONIC_LIF_ATTR_TXSTAMP, 1074 .txstamp_mode = cpu_to_le16(txstamp_mode), 1075 }, 1076 }; 1077 1078 return ionic_adminq_post_wait(lif, &ctx); 1079 } 1080 1081 static void ionic_lif_del_hwstamp_rxfilt(struct ionic_lif *lif) 1082 { 1083 struct ionic_admin_ctx ctx = { 1084 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 1085 .cmd.rx_filter_del = { 1086 .opcode = IONIC_CMD_RX_FILTER_DEL, 1087 .lif_index = cpu_to_le16(lif->index), 1088 }, 1089 }; 1090 struct ionic_rx_filter *f; 1091 u32 filter_id; 1092 int err; 1093 1094 spin_lock_bh(&lif->rx_filters.lock); 1095 1096 f = ionic_rx_filter_rxsteer(lif); 1097 if (!f) { 1098 spin_unlock_bh(&lif->rx_filters.lock); 1099 return; 1100 } 1101 1102 filter_id = f->filter_id; 1103 ionic_rx_filter_free(lif, f); 1104 1105 spin_unlock_bh(&lif->rx_filters.lock); 1106 1107 netdev_dbg(lif->netdev, "rx_filter del RXSTEER (id %d)\n", filter_id); 1108 1109 ctx.cmd.rx_filter_del.filter_id = cpu_to_le32(filter_id); 1110 1111 err = ionic_adminq_post_wait(lif, &ctx); 1112 if (err && err != -EEXIST) 1113 netdev_dbg(lif->netdev, "failed to delete rx_filter RXSTEER (id %d)\n", filter_id); 1114 } 1115 1116 static int ionic_lif_add_hwstamp_rxfilt(struct ionic_lif *lif, u64 pkt_class) 1117 { 1118 struct ionic_admin_ctx ctx = { 1119 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 1120 .cmd.rx_filter_add = { 1121 .opcode = IONIC_CMD_RX_FILTER_ADD, 1122 .lif_index = cpu_to_le16(lif->index), 1123 .match = cpu_to_le16(IONIC_RX_FILTER_STEER_PKTCLASS), 1124 .pkt_class = cpu_to_le64(pkt_class), 1125 }, 1126 }; 1127 u8 qtype; 1128 u32 qid; 1129 int err; 1130 1131 if (!lif->hwstamp_rxq) 1132 return -EINVAL; 1133 1134 qtype = lif->hwstamp_rxq->q.type; 1135 ctx.cmd.rx_filter_add.qtype = qtype; 1136 1137 qid = lif->hwstamp_rxq->q.index; 1138 ctx.cmd.rx_filter_add.qid = cpu_to_le32(qid); 1139 1140 netdev_dbg(lif->netdev, "rx_filter add RXSTEER\n"); 1141 err = ionic_adminq_post_wait(lif, &ctx); 1142 if (err && err != -EEXIST) 1143 return err; 1144 1145 spin_lock_bh(&lif->rx_filters.lock); 1146 err = ionic_rx_filter_save(lif, 0, qid, 0, &ctx, IONIC_FILTER_STATE_SYNCED); 1147 spin_unlock_bh(&lif->rx_filters.lock); 1148 1149 return err; 1150 } 1151 1152 int ionic_lif_set_hwstamp_rxfilt(struct ionic_lif *lif, u64 pkt_class) 1153 { 1154 ionic_lif_del_hwstamp_rxfilt(lif); 1155 1156 if (!pkt_class) 1157 return 0; 1158 1159 return ionic_lif_add_hwstamp_rxfilt(lif, pkt_class); 1160 } 1161 1162 static bool ionic_notifyq_service(struct ionic_cq *cq, 1163 struct ionic_cq_info *cq_info) 1164 { 1165 union ionic_notifyq_comp *comp = cq_info->cq_desc; 1166 struct ionic_deferred_work *work; 1167 struct net_device *netdev; 1168 struct ionic_queue *q; 1169 struct ionic_lif *lif; 1170 u64 eid; 1171 1172 q = cq->bound_q; 1173 lif = q->info[0].cb_arg; 1174 netdev = lif->netdev; 1175 eid = le64_to_cpu(comp->event.eid); 1176 1177 /* Have we run out of new completions to process? */ 1178 if ((s64)(eid - lif->last_eid) <= 0) 1179 return false; 1180 1181 lif->last_eid = eid; 1182 1183 dev_dbg(lif->ionic->dev, "notifyq event:\n"); 1184 dynamic_hex_dump("event ", DUMP_PREFIX_OFFSET, 16, 1, 1185 comp, sizeof(*comp), true); 1186 1187 switch (le16_to_cpu(comp->event.ecode)) { 1188 case IONIC_EVENT_LINK_CHANGE: 1189 ionic_link_status_check_request(lif, CAN_NOT_SLEEP); 1190 break; 1191 case IONIC_EVENT_RESET: 1192 if (lif->ionic->idev.fw_status_ready && 1193 !test_bit(IONIC_LIF_F_FW_RESET, lif->state) && 1194 !test_and_set_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) { 1195 work = kzalloc(sizeof(*work), GFP_ATOMIC); 1196 if (!work) { 1197 netdev_err(lif->netdev, "Reset event dropped\n"); 1198 clear_bit(IONIC_LIF_F_FW_STOPPING, lif->state); 1199 } else { 1200 work->type = IONIC_DW_TYPE_LIF_RESET; 1201 ionic_lif_deferred_enqueue(&lif->deferred, work); 1202 } 1203 } 1204 break; 1205 default: 1206 netdev_warn(netdev, "Notifyq event ecode=%d eid=%lld\n", 1207 comp->event.ecode, eid); 1208 break; 1209 } 1210 1211 return true; 1212 } 1213 1214 static bool ionic_adminq_service(struct ionic_cq *cq, 1215 struct ionic_cq_info *cq_info) 1216 { 1217 struct ionic_admin_comp *comp = cq_info->cq_desc; 1218 1219 if (!color_match(comp->color, cq->done_color)) 1220 return false; 1221 1222 ionic_q_service(cq->bound_q, cq_info, le16_to_cpu(comp->comp_index)); 1223 1224 return true; 1225 } 1226 1227 static int ionic_adminq_napi(struct napi_struct *napi, int budget) 1228 { 1229 struct ionic_intr_info *intr = napi_to_cq(napi)->bound_intr; 1230 struct ionic_lif *lif = napi_to_cq(napi)->lif; 1231 struct ionic_dev *idev = &lif->ionic->idev; 1232 unsigned long irqflags; 1233 unsigned int flags = 0; 1234 bool resched = false; 1235 int rx_work = 0; 1236 int tx_work = 0; 1237 int n_work = 0; 1238 int a_work = 0; 1239 int work_done; 1240 int credits; 1241 1242 if (lif->notifyqcq && lif->notifyqcq->flags & IONIC_QCQ_F_INITED) 1243 n_work = ionic_cq_service(&lif->notifyqcq->cq, budget, 1244 ionic_notifyq_service, NULL, NULL); 1245 1246 spin_lock_irqsave(&lif->adminq_lock, irqflags); 1247 if (lif->adminqcq && lif->adminqcq->flags & IONIC_QCQ_F_INITED) 1248 a_work = ionic_cq_service(&lif->adminqcq->cq, budget, 1249 ionic_adminq_service, NULL, NULL); 1250 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 1251 1252 if (lif->hwstamp_rxq) 1253 rx_work = ionic_cq_service(&lif->hwstamp_rxq->cq, budget, 1254 ionic_rx_service, NULL, NULL); 1255 1256 if (lif->hwstamp_txq) 1257 tx_work = ionic_cq_service(&lif->hwstamp_txq->cq, budget, 1258 ionic_tx_service, NULL, NULL); 1259 1260 work_done = max(max(n_work, a_work), max(rx_work, tx_work)); 1261 if (work_done < budget && napi_complete_done(napi, work_done)) { 1262 flags |= IONIC_INTR_CRED_UNMASK; 1263 intr->rearm_count++; 1264 } 1265 1266 if (work_done || flags) { 1267 flags |= IONIC_INTR_CRED_RESET_COALESCE; 1268 credits = n_work + a_work + rx_work + tx_work; 1269 ionic_intr_credits(idev->intr_ctrl, intr->index, credits, flags); 1270 } 1271 1272 if (!a_work && ionic_adminq_poke_doorbell(&lif->adminqcq->q)) 1273 resched = true; 1274 if (lif->hwstamp_rxq && !rx_work && ionic_rxq_poke_doorbell(&lif->hwstamp_rxq->q)) 1275 resched = true; 1276 if (lif->hwstamp_txq && !tx_work && ionic_txq_poke_doorbell(&lif->hwstamp_txq->q)) 1277 resched = true; 1278 if (resched) 1279 mod_timer(&lif->adminqcq->napi_deadline, 1280 jiffies + IONIC_NAPI_DEADLINE); 1281 1282 return work_done; 1283 } 1284 1285 void ionic_get_stats64(struct net_device *netdev, 1286 struct rtnl_link_stats64 *ns) 1287 { 1288 struct ionic_lif *lif = netdev_priv(netdev); 1289 struct ionic_lif_stats *ls; 1290 1291 memset(ns, 0, sizeof(*ns)); 1292 ls = &lif->info->stats; 1293 1294 ns->rx_packets = le64_to_cpu(ls->rx_ucast_packets) + 1295 le64_to_cpu(ls->rx_mcast_packets) + 1296 le64_to_cpu(ls->rx_bcast_packets); 1297 1298 ns->tx_packets = le64_to_cpu(ls->tx_ucast_packets) + 1299 le64_to_cpu(ls->tx_mcast_packets) + 1300 le64_to_cpu(ls->tx_bcast_packets); 1301 1302 ns->rx_bytes = le64_to_cpu(ls->rx_ucast_bytes) + 1303 le64_to_cpu(ls->rx_mcast_bytes) + 1304 le64_to_cpu(ls->rx_bcast_bytes); 1305 1306 ns->tx_bytes = le64_to_cpu(ls->tx_ucast_bytes) + 1307 le64_to_cpu(ls->tx_mcast_bytes) + 1308 le64_to_cpu(ls->tx_bcast_bytes); 1309 1310 ns->rx_dropped = le64_to_cpu(ls->rx_ucast_drop_packets) + 1311 le64_to_cpu(ls->rx_mcast_drop_packets) + 1312 le64_to_cpu(ls->rx_bcast_drop_packets); 1313 1314 ns->tx_dropped = le64_to_cpu(ls->tx_ucast_drop_packets) + 1315 le64_to_cpu(ls->tx_mcast_drop_packets) + 1316 le64_to_cpu(ls->tx_bcast_drop_packets); 1317 1318 ns->multicast = le64_to_cpu(ls->rx_mcast_packets); 1319 1320 ns->rx_over_errors = le64_to_cpu(ls->rx_queue_empty); 1321 1322 ns->rx_missed_errors = le64_to_cpu(ls->rx_dma_error) + 1323 le64_to_cpu(ls->rx_queue_disabled) + 1324 le64_to_cpu(ls->rx_desc_fetch_error) + 1325 le64_to_cpu(ls->rx_desc_data_error); 1326 1327 ns->tx_aborted_errors = le64_to_cpu(ls->tx_dma_error) + 1328 le64_to_cpu(ls->tx_queue_disabled) + 1329 le64_to_cpu(ls->tx_desc_fetch_error) + 1330 le64_to_cpu(ls->tx_desc_data_error); 1331 1332 ns->rx_errors = ns->rx_over_errors + 1333 ns->rx_missed_errors; 1334 1335 ns->tx_errors = ns->tx_aborted_errors; 1336 } 1337 1338 static int ionic_addr_add(struct net_device *netdev, const u8 *addr) 1339 { 1340 return ionic_lif_list_addr(netdev_priv(netdev), addr, ADD_ADDR); 1341 } 1342 1343 static int ionic_addr_del(struct net_device *netdev, const u8 *addr) 1344 { 1345 /* Don't delete our own address from the uc list */ 1346 if (ether_addr_equal(addr, netdev->dev_addr)) 1347 return 0; 1348 1349 return ionic_lif_list_addr(netdev_priv(netdev), addr, DEL_ADDR); 1350 } 1351 1352 void ionic_lif_rx_mode(struct ionic_lif *lif) 1353 { 1354 struct net_device *netdev = lif->netdev; 1355 unsigned int nfilters; 1356 unsigned int nd_flags; 1357 char buf[128]; 1358 u16 rx_mode; 1359 int i; 1360 #define REMAIN(__x) (sizeof(buf) - (__x)) 1361 1362 mutex_lock(&lif->config_lock); 1363 1364 /* grab the flags once for local use */ 1365 nd_flags = netdev->flags; 1366 1367 rx_mode = IONIC_RX_MODE_F_UNICAST; 1368 rx_mode |= (nd_flags & IFF_MULTICAST) ? IONIC_RX_MODE_F_MULTICAST : 0; 1369 rx_mode |= (nd_flags & IFF_BROADCAST) ? IONIC_RX_MODE_F_BROADCAST : 0; 1370 rx_mode |= (nd_flags & IFF_PROMISC) ? IONIC_RX_MODE_F_PROMISC : 0; 1371 rx_mode |= (nd_flags & IFF_ALLMULTI) ? IONIC_RX_MODE_F_ALLMULTI : 0; 1372 1373 /* sync the filters */ 1374 ionic_rx_filter_sync(lif); 1375 1376 /* check for overflow state 1377 * if so, we track that we overflowed and enable NIC PROMISC 1378 * else if the overflow is set and not needed 1379 * we remove our overflow flag and check the netdev flags 1380 * to see if we can disable NIC PROMISC 1381 */ 1382 nfilters = le32_to_cpu(lif->identity->eth.max_ucast_filters); 1383 1384 if (((lif->nucast + lif->nmcast) >= nfilters) || 1385 (lif->max_vlans && lif->nvlans >= lif->max_vlans)) { 1386 rx_mode |= IONIC_RX_MODE_F_PROMISC; 1387 rx_mode |= IONIC_RX_MODE_F_ALLMULTI; 1388 } else { 1389 if (!(nd_flags & IFF_PROMISC)) 1390 rx_mode &= ~IONIC_RX_MODE_F_PROMISC; 1391 if (!(nd_flags & IFF_ALLMULTI)) 1392 rx_mode &= ~IONIC_RX_MODE_F_ALLMULTI; 1393 } 1394 1395 i = scnprintf(buf, sizeof(buf), "rx_mode 0x%04x -> 0x%04x:", 1396 lif->rx_mode, rx_mode); 1397 if (rx_mode & IONIC_RX_MODE_F_UNICAST) 1398 i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_UNICAST"); 1399 if (rx_mode & IONIC_RX_MODE_F_MULTICAST) 1400 i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_MULTICAST"); 1401 if (rx_mode & IONIC_RX_MODE_F_BROADCAST) 1402 i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_BROADCAST"); 1403 if (rx_mode & IONIC_RX_MODE_F_PROMISC) 1404 i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_PROMISC"); 1405 if (rx_mode & IONIC_RX_MODE_F_ALLMULTI) 1406 i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_ALLMULTI"); 1407 if (rx_mode & IONIC_RX_MODE_F_RDMA_SNIFFER) 1408 i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_RDMA_SNIFFER"); 1409 netdev_dbg(netdev, "lif%d %s\n", lif->index, buf); 1410 1411 if (lif->rx_mode != rx_mode) { 1412 struct ionic_admin_ctx ctx = { 1413 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 1414 .cmd.rx_mode_set = { 1415 .opcode = IONIC_CMD_RX_MODE_SET, 1416 .lif_index = cpu_to_le16(lif->index), 1417 }, 1418 }; 1419 int err; 1420 1421 ctx.cmd.rx_mode_set.rx_mode = cpu_to_le16(rx_mode); 1422 err = ionic_adminq_post_wait(lif, &ctx); 1423 if (err) 1424 netdev_warn(netdev, "set rx_mode 0x%04x failed: %d\n", 1425 rx_mode, err); 1426 else 1427 lif->rx_mode = rx_mode; 1428 } 1429 1430 mutex_unlock(&lif->config_lock); 1431 } 1432 1433 static void ionic_ndo_set_rx_mode(struct net_device *netdev) 1434 { 1435 struct ionic_lif *lif = netdev_priv(netdev); 1436 struct ionic_deferred_work *work; 1437 1438 /* Sync the kernel filter list with the driver filter list */ 1439 __dev_uc_sync(netdev, ionic_addr_add, ionic_addr_del); 1440 __dev_mc_sync(netdev, ionic_addr_add, ionic_addr_del); 1441 1442 /* Shove off the rest of the rxmode work to the work task 1443 * which will include syncing the filters to the firmware. 1444 */ 1445 work = kzalloc(sizeof(*work), GFP_ATOMIC); 1446 if (!work) { 1447 netdev_err(lif->netdev, "rxmode change dropped\n"); 1448 return; 1449 } 1450 work->type = IONIC_DW_TYPE_RX_MODE; 1451 netdev_dbg(lif->netdev, "deferred: rx_mode\n"); 1452 ionic_lif_deferred_enqueue(&lif->deferred, work); 1453 } 1454 1455 static __le64 ionic_netdev_features_to_nic(netdev_features_t features) 1456 { 1457 u64 wanted = 0; 1458 1459 if (features & NETIF_F_HW_VLAN_CTAG_TX) 1460 wanted |= IONIC_ETH_HW_VLAN_TX_TAG; 1461 if (features & NETIF_F_HW_VLAN_CTAG_RX) 1462 wanted |= IONIC_ETH_HW_VLAN_RX_STRIP; 1463 if (features & NETIF_F_HW_VLAN_CTAG_FILTER) 1464 wanted |= IONIC_ETH_HW_VLAN_RX_FILTER; 1465 if (features & NETIF_F_RXHASH) 1466 wanted |= IONIC_ETH_HW_RX_HASH; 1467 if (features & NETIF_F_RXCSUM) 1468 wanted |= IONIC_ETH_HW_RX_CSUM; 1469 if (features & NETIF_F_SG) 1470 wanted |= IONIC_ETH_HW_TX_SG; 1471 if (features & NETIF_F_HW_CSUM) 1472 wanted |= IONIC_ETH_HW_TX_CSUM; 1473 if (features & NETIF_F_TSO) 1474 wanted |= IONIC_ETH_HW_TSO; 1475 if (features & NETIF_F_TSO6) 1476 wanted |= IONIC_ETH_HW_TSO_IPV6; 1477 if (features & NETIF_F_TSO_ECN) 1478 wanted |= IONIC_ETH_HW_TSO_ECN; 1479 if (features & NETIF_F_GSO_GRE) 1480 wanted |= IONIC_ETH_HW_TSO_GRE; 1481 if (features & NETIF_F_GSO_GRE_CSUM) 1482 wanted |= IONIC_ETH_HW_TSO_GRE_CSUM; 1483 if (features & NETIF_F_GSO_IPXIP4) 1484 wanted |= IONIC_ETH_HW_TSO_IPXIP4; 1485 if (features & NETIF_F_GSO_IPXIP6) 1486 wanted |= IONIC_ETH_HW_TSO_IPXIP6; 1487 if (features & NETIF_F_GSO_UDP_TUNNEL) 1488 wanted |= IONIC_ETH_HW_TSO_UDP; 1489 if (features & NETIF_F_GSO_UDP_TUNNEL_CSUM) 1490 wanted |= IONIC_ETH_HW_TSO_UDP_CSUM; 1491 1492 return cpu_to_le64(wanted); 1493 } 1494 1495 static int ionic_set_nic_features(struct ionic_lif *lif, 1496 netdev_features_t features) 1497 { 1498 struct device *dev = lif->ionic->dev; 1499 struct ionic_admin_ctx ctx = { 1500 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 1501 .cmd.lif_setattr = { 1502 .opcode = IONIC_CMD_LIF_SETATTR, 1503 .index = cpu_to_le16(lif->index), 1504 .attr = IONIC_LIF_ATTR_FEATURES, 1505 }, 1506 }; 1507 u64 vlan_flags = IONIC_ETH_HW_VLAN_TX_TAG | 1508 IONIC_ETH_HW_VLAN_RX_STRIP | 1509 IONIC_ETH_HW_VLAN_RX_FILTER; 1510 u64 old_hw_features; 1511 int err; 1512 1513 ctx.cmd.lif_setattr.features = ionic_netdev_features_to_nic(features); 1514 1515 if (lif->phc) 1516 ctx.cmd.lif_setattr.features |= cpu_to_le64(IONIC_ETH_HW_TIMESTAMP); 1517 1518 err = ionic_adminq_post_wait(lif, &ctx); 1519 if (err) 1520 return err; 1521 1522 old_hw_features = lif->hw_features; 1523 lif->hw_features = le64_to_cpu(ctx.cmd.lif_setattr.features & 1524 ctx.comp.lif_setattr.features); 1525 1526 if ((old_hw_features ^ lif->hw_features) & IONIC_ETH_HW_RX_HASH) 1527 ionic_lif_rss_config(lif, lif->rss_types, NULL, NULL); 1528 1529 if ((vlan_flags & le64_to_cpu(ctx.cmd.lif_setattr.features)) && 1530 !(vlan_flags & le64_to_cpu(ctx.comp.lif_setattr.features))) 1531 dev_info_once(lif->ionic->dev, "NIC is not supporting vlan offload, likely in SmartNIC mode\n"); 1532 1533 if (lif->hw_features & IONIC_ETH_HW_VLAN_TX_TAG) 1534 dev_dbg(dev, "feature ETH_HW_VLAN_TX_TAG\n"); 1535 if (lif->hw_features & IONIC_ETH_HW_VLAN_RX_STRIP) 1536 dev_dbg(dev, "feature ETH_HW_VLAN_RX_STRIP\n"); 1537 if (lif->hw_features & IONIC_ETH_HW_VLAN_RX_FILTER) 1538 dev_dbg(dev, "feature ETH_HW_VLAN_RX_FILTER\n"); 1539 if (lif->hw_features & IONIC_ETH_HW_RX_HASH) 1540 dev_dbg(dev, "feature ETH_HW_RX_HASH\n"); 1541 if (lif->hw_features & IONIC_ETH_HW_TX_SG) 1542 dev_dbg(dev, "feature ETH_HW_TX_SG\n"); 1543 if (lif->hw_features & IONIC_ETH_HW_TX_CSUM) 1544 dev_dbg(dev, "feature ETH_HW_TX_CSUM\n"); 1545 if (lif->hw_features & IONIC_ETH_HW_RX_CSUM) 1546 dev_dbg(dev, "feature ETH_HW_RX_CSUM\n"); 1547 if (lif->hw_features & IONIC_ETH_HW_TSO) 1548 dev_dbg(dev, "feature ETH_HW_TSO\n"); 1549 if (lif->hw_features & IONIC_ETH_HW_TSO_IPV6) 1550 dev_dbg(dev, "feature ETH_HW_TSO_IPV6\n"); 1551 if (lif->hw_features & IONIC_ETH_HW_TSO_ECN) 1552 dev_dbg(dev, "feature ETH_HW_TSO_ECN\n"); 1553 if (lif->hw_features & IONIC_ETH_HW_TSO_GRE) 1554 dev_dbg(dev, "feature ETH_HW_TSO_GRE\n"); 1555 if (lif->hw_features & IONIC_ETH_HW_TSO_GRE_CSUM) 1556 dev_dbg(dev, "feature ETH_HW_TSO_GRE_CSUM\n"); 1557 if (lif->hw_features & IONIC_ETH_HW_TSO_IPXIP4) 1558 dev_dbg(dev, "feature ETH_HW_TSO_IPXIP4\n"); 1559 if (lif->hw_features & IONIC_ETH_HW_TSO_IPXIP6) 1560 dev_dbg(dev, "feature ETH_HW_TSO_IPXIP6\n"); 1561 if (lif->hw_features & IONIC_ETH_HW_TSO_UDP) 1562 dev_dbg(dev, "feature ETH_HW_TSO_UDP\n"); 1563 if (lif->hw_features & IONIC_ETH_HW_TSO_UDP_CSUM) 1564 dev_dbg(dev, "feature ETH_HW_TSO_UDP_CSUM\n"); 1565 if (lif->hw_features & IONIC_ETH_HW_TIMESTAMP) 1566 dev_dbg(dev, "feature ETH_HW_TIMESTAMP\n"); 1567 1568 return 0; 1569 } 1570 1571 static int ionic_init_nic_features(struct ionic_lif *lif) 1572 { 1573 struct net_device *netdev = lif->netdev; 1574 netdev_features_t features; 1575 int err; 1576 1577 /* set up what we expect to support by default */ 1578 features = NETIF_F_HW_VLAN_CTAG_TX | 1579 NETIF_F_HW_VLAN_CTAG_RX | 1580 NETIF_F_HW_VLAN_CTAG_FILTER | 1581 NETIF_F_SG | 1582 NETIF_F_HW_CSUM | 1583 NETIF_F_RXCSUM | 1584 NETIF_F_TSO | 1585 NETIF_F_TSO6 | 1586 NETIF_F_TSO_ECN | 1587 NETIF_F_GSO_GRE | 1588 NETIF_F_GSO_GRE_CSUM | 1589 NETIF_F_GSO_IPXIP4 | 1590 NETIF_F_GSO_IPXIP6 | 1591 NETIF_F_GSO_UDP_TUNNEL | 1592 NETIF_F_GSO_UDP_TUNNEL_CSUM; 1593 1594 if (lif->nxqs > 1) 1595 features |= NETIF_F_RXHASH; 1596 1597 err = ionic_set_nic_features(lif, features); 1598 if (err) 1599 return err; 1600 1601 /* tell the netdev what we actually can support */ 1602 netdev->features |= NETIF_F_HIGHDMA; 1603 1604 if (lif->hw_features & IONIC_ETH_HW_VLAN_TX_TAG) 1605 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX; 1606 if (lif->hw_features & IONIC_ETH_HW_VLAN_RX_STRIP) 1607 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX; 1608 if (lif->hw_features & IONIC_ETH_HW_VLAN_RX_FILTER) 1609 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 1610 if (lif->hw_features & IONIC_ETH_HW_RX_HASH) 1611 netdev->hw_features |= NETIF_F_RXHASH; 1612 if (lif->hw_features & IONIC_ETH_HW_TX_SG) 1613 netdev->hw_features |= NETIF_F_SG; 1614 1615 if (lif->hw_features & IONIC_ETH_HW_TX_CSUM) 1616 netdev->hw_enc_features |= NETIF_F_HW_CSUM; 1617 if (lif->hw_features & IONIC_ETH_HW_RX_CSUM) 1618 netdev->hw_enc_features |= NETIF_F_RXCSUM; 1619 if (lif->hw_features & IONIC_ETH_HW_TSO) 1620 netdev->hw_enc_features |= NETIF_F_TSO; 1621 if (lif->hw_features & IONIC_ETH_HW_TSO_IPV6) 1622 netdev->hw_enc_features |= NETIF_F_TSO6; 1623 if (lif->hw_features & IONIC_ETH_HW_TSO_ECN) 1624 netdev->hw_enc_features |= NETIF_F_TSO_ECN; 1625 if (lif->hw_features & IONIC_ETH_HW_TSO_GRE) 1626 netdev->hw_enc_features |= NETIF_F_GSO_GRE; 1627 if (lif->hw_features & IONIC_ETH_HW_TSO_GRE_CSUM) 1628 netdev->hw_enc_features |= NETIF_F_GSO_GRE_CSUM; 1629 if (lif->hw_features & IONIC_ETH_HW_TSO_IPXIP4) 1630 netdev->hw_enc_features |= NETIF_F_GSO_IPXIP4; 1631 if (lif->hw_features & IONIC_ETH_HW_TSO_IPXIP6) 1632 netdev->hw_enc_features |= NETIF_F_GSO_IPXIP6; 1633 if (lif->hw_features & IONIC_ETH_HW_TSO_UDP) 1634 netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL; 1635 if (lif->hw_features & IONIC_ETH_HW_TSO_UDP_CSUM) 1636 netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM; 1637 1638 netdev->hw_features |= netdev->hw_enc_features; 1639 netdev->features |= netdev->hw_features; 1640 netdev->vlan_features |= netdev->features & ~NETIF_F_VLAN_FEATURES; 1641 1642 netdev->priv_flags |= IFF_UNICAST_FLT | 1643 IFF_LIVE_ADDR_CHANGE; 1644 1645 return 0; 1646 } 1647 1648 static int ionic_set_features(struct net_device *netdev, 1649 netdev_features_t features) 1650 { 1651 struct ionic_lif *lif = netdev_priv(netdev); 1652 int err; 1653 1654 netdev_dbg(netdev, "%s: lif->features=0x%08llx new_features=0x%08llx\n", 1655 __func__, (u64)lif->netdev->features, (u64)features); 1656 1657 err = ionic_set_nic_features(lif, features); 1658 1659 return err; 1660 } 1661 1662 static int ionic_set_attr_mac(struct ionic_lif *lif, u8 *mac) 1663 { 1664 struct ionic_admin_ctx ctx = { 1665 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 1666 .cmd.lif_setattr = { 1667 .opcode = IONIC_CMD_LIF_SETATTR, 1668 .index = cpu_to_le16(lif->index), 1669 .attr = IONIC_LIF_ATTR_MAC, 1670 }, 1671 }; 1672 1673 ether_addr_copy(ctx.cmd.lif_setattr.mac, mac); 1674 return ionic_adminq_post_wait(lif, &ctx); 1675 } 1676 1677 static int ionic_get_attr_mac(struct ionic_lif *lif, u8 *mac_addr) 1678 { 1679 struct ionic_admin_ctx ctx = { 1680 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 1681 .cmd.lif_getattr = { 1682 .opcode = IONIC_CMD_LIF_GETATTR, 1683 .index = cpu_to_le16(lif->index), 1684 .attr = IONIC_LIF_ATTR_MAC, 1685 }, 1686 }; 1687 int err; 1688 1689 err = ionic_adminq_post_wait(lif, &ctx); 1690 if (err) 1691 return err; 1692 1693 ether_addr_copy(mac_addr, ctx.comp.lif_getattr.mac); 1694 return 0; 1695 } 1696 1697 static int ionic_program_mac(struct ionic_lif *lif, u8 *mac) 1698 { 1699 u8 get_mac[ETH_ALEN]; 1700 int err; 1701 1702 err = ionic_set_attr_mac(lif, mac); 1703 if (err) 1704 return err; 1705 1706 err = ionic_get_attr_mac(lif, get_mac); 1707 if (err) 1708 return err; 1709 1710 /* To deal with older firmware that silently ignores the set attr mac: 1711 * doesn't actually change the mac and doesn't return an error, so we 1712 * do the get attr to verify whether or not the set actually happened 1713 */ 1714 if (!ether_addr_equal(get_mac, mac)) 1715 return 1; 1716 1717 return 0; 1718 } 1719 1720 static int ionic_set_mac_address(struct net_device *netdev, void *sa) 1721 { 1722 struct ionic_lif *lif = netdev_priv(netdev); 1723 struct sockaddr *addr = sa; 1724 u8 *mac; 1725 int err; 1726 1727 mac = (u8 *)addr->sa_data; 1728 if (ether_addr_equal(netdev->dev_addr, mac)) 1729 return 0; 1730 1731 err = ionic_program_mac(lif, mac); 1732 if (err < 0) 1733 return err; 1734 1735 if (err > 0) 1736 netdev_dbg(netdev, "%s: SET and GET ATTR Mac are not equal-due to old FW running\n", 1737 __func__); 1738 1739 err = eth_prepare_mac_addr_change(netdev, addr); 1740 if (err) 1741 return err; 1742 1743 if (!is_zero_ether_addr(netdev->dev_addr)) { 1744 netdev_info(netdev, "deleting mac addr %pM\n", 1745 netdev->dev_addr); 1746 ionic_lif_addr_del(netdev_priv(netdev), netdev->dev_addr); 1747 } 1748 1749 eth_commit_mac_addr_change(netdev, addr); 1750 netdev_info(netdev, "updating mac addr %pM\n", mac); 1751 1752 return ionic_lif_addr_add(netdev_priv(netdev), mac); 1753 } 1754 1755 void ionic_stop_queues_reconfig(struct ionic_lif *lif) 1756 { 1757 /* Stop and clean the queues before reconfiguration */ 1758 netif_device_detach(lif->netdev); 1759 ionic_stop_queues(lif); 1760 ionic_txrx_deinit(lif); 1761 } 1762 1763 static int ionic_start_queues_reconfig(struct ionic_lif *lif) 1764 { 1765 int err; 1766 1767 /* Re-init the queues after reconfiguration */ 1768 1769 /* The only way txrx_init can fail here is if communication 1770 * with FW is suddenly broken. There's not much we can do 1771 * at this point - error messages have already been printed, 1772 * so we can continue on and the user can eventually do a 1773 * DOWN and UP to try to reset and clear the issue. 1774 */ 1775 err = ionic_txrx_init(lif); 1776 ionic_link_status_check_request(lif, CAN_NOT_SLEEP); 1777 netif_device_attach(lif->netdev); 1778 1779 return err; 1780 } 1781 1782 static int ionic_change_mtu(struct net_device *netdev, int new_mtu) 1783 { 1784 struct ionic_lif *lif = netdev_priv(netdev); 1785 struct ionic_admin_ctx ctx = { 1786 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 1787 .cmd.lif_setattr = { 1788 .opcode = IONIC_CMD_LIF_SETATTR, 1789 .index = cpu_to_le16(lif->index), 1790 .attr = IONIC_LIF_ATTR_MTU, 1791 .mtu = cpu_to_le32(new_mtu), 1792 }, 1793 }; 1794 int err; 1795 1796 err = ionic_adminq_post_wait(lif, &ctx); 1797 if (err) 1798 return err; 1799 1800 /* if we're not running, nothing more to do */ 1801 if (!netif_running(netdev)) { 1802 netdev->mtu = new_mtu; 1803 return 0; 1804 } 1805 1806 mutex_lock(&lif->queue_lock); 1807 ionic_stop_queues_reconfig(lif); 1808 netdev->mtu = new_mtu; 1809 err = ionic_start_queues_reconfig(lif); 1810 mutex_unlock(&lif->queue_lock); 1811 1812 return err; 1813 } 1814 1815 static void ionic_tx_timeout_work(struct work_struct *ws) 1816 { 1817 struct ionic_lif *lif = container_of(ws, struct ionic_lif, tx_timeout_work); 1818 int err; 1819 1820 if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) 1821 return; 1822 1823 /* if we were stopped before this scheduled job was launched, 1824 * don't bother the queues as they are already stopped. 1825 */ 1826 if (!netif_running(lif->netdev)) 1827 return; 1828 1829 mutex_lock(&lif->queue_lock); 1830 ionic_stop_queues_reconfig(lif); 1831 err = ionic_start_queues_reconfig(lif); 1832 mutex_unlock(&lif->queue_lock); 1833 1834 if (err) 1835 dev_err(lif->ionic->dev, "%s: Restarting queues failed\n", __func__); 1836 } 1837 1838 static void ionic_tx_timeout(struct net_device *netdev, unsigned int txqueue) 1839 { 1840 struct ionic_lif *lif = netdev_priv(netdev); 1841 1842 netdev_info(lif->netdev, "Tx Timeout triggered - txq %d\n", txqueue); 1843 schedule_work(&lif->tx_timeout_work); 1844 } 1845 1846 static int ionic_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, 1847 u16 vid) 1848 { 1849 struct ionic_lif *lif = netdev_priv(netdev); 1850 int err; 1851 1852 err = ionic_lif_vlan_add(lif, vid); 1853 if (err) 1854 return err; 1855 1856 ionic_lif_rx_mode(lif); 1857 1858 return 0; 1859 } 1860 1861 static int ionic_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, 1862 u16 vid) 1863 { 1864 struct ionic_lif *lif = netdev_priv(netdev); 1865 int err; 1866 1867 err = ionic_lif_vlan_del(lif, vid); 1868 if (err) 1869 return err; 1870 1871 ionic_lif_rx_mode(lif); 1872 1873 return 0; 1874 } 1875 1876 int ionic_lif_rss_config(struct ionic_lif *lif, const u16 types, 1877 const u8 *key, const u32 *indir) 1878 { 1879 struct ionic_admin_ctx ctx = { 1880 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 1881 .cmd.lif_setattr = { 1882 .opcode = IONIC_CMD_LIF_SETATTR, 1883 .attr = IONIC_LIF_ATTR_RSS, 1884 .rss.addr = cpu_to_le64(lif->rss_ind_tbl_pa), 1885 }, 1886 }; 1887 unsigned int i, tbl_sz; 1888 1889 if (lif->hw_features & IONIC_ETH_HW_RX_HASH) { 1890 lif->rss_types = types; 1891 ctx.cmd.lif_setattr.rss.types = cpu_to_le16(types); 1892 } 1893 1894 if (key) 1895 memcpy(lif->rss_hash_key, key, IONIC_RSS_HASH_KEY_SIZE); 1896 1897 if (indir) { 1898 tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz); 1899 for (i = 0; i < tbl_sz; i++) 1900 lif->rss_ind_tbl[i] = indir[i]; 1901 } 1902 1903 memcpy(ctx.cmd.lif_setattr.rss.key, lif->rss_hash_key, 1904 IONIC_RSS_HASH_KEY_SIZE); 1905 1906 return ionic_adminq_post_wait(lif, &ctx); 1907 } 1908 1909 static int ionic_lif_rss_init(struct ionic_lif *lif) 1910 { 1911 unsigned int tbl_sz; 1912 unsigned int i; 1913 1914 lif->rss_types = IONIC_RSS_TYPE_IPV4 | 1915 IONIC_RSS_TYPE_IPV4_TCP | 1916 IONIC_RSS_TYPE_IPV4_UDP | 1917 IONIC_RSS_TYPE_IPV6 | 1918 IONIC_RSS_TYPE_IPV6_TCP | 1919 IONIC_RSS_TYPE_IPV6_UDP; 1920 1921 /* Fill indirection table with 'default' values */ 1922 tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz); 1923 for (i = 0; i < tbl_sz; i++) 1924 lif->rss_ind_tbl[i] = ethtool_rxfh_indir_default(i, lif->nxqs); 1925 1926 return ionic_lif_rss_config(lif, lif->rss_types, NULL, NULL); 1927 } 1928 1929 static void ionic_lif_rss_deinit(struct ionic_lif *lif) 1930 { 1931 int tbl_sz; 1932 1933 tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz); 1934 memset(lif->rss_ind_tbl, 0, tbl_sz); 1935 memset(lif->rss_hash_key, 0, IONIC_RSS_HASH_KEY_SIZE); 1936 1937 ionic_lif_rss_config(lif, 0x0, NULL, NULL); 1938 } 1939 1940 static void ionic_lif_quiesce(struct ionic_lif *lif) 1941 { 1942 struct ionic_admin_ctx ctx = { 1943 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 1944 .cmd.lif_setattr = { 1945 .opcode = IONIC_CMD_LIF_SETATTR, 1946 .index = cpu_to_le16(lif->index), 1947 .attr = IONIC_LIF_ATTR_STATE, 1948 .state = IONIC_LIF_QUIESCE, 1949 }, 1950 }; 1951 int err; 1952 1953 err = ionic_adminq_post_wait(lif, &ctx); 1954 if (err) 1955 netdev_dbg(lif->netdev, "lif quiesce failed %d\n", err); 1956 } 1957 1958 static void ionic_txrx_disable(struct ionic_lif *lif) 1959 { 1960 unsigned int i; 1961 int err = 0; 1962 1963 if (lif->txqcqs) { 1964 for (i = 0; i < lif->nxqs; i++) 1965 err = ionic_qcq_disable(lif, lif->txqcqs[i], err); 1966 } 1967 1968 if (lif->hwstamp_txq) 1969 err = ionic_qcq_disable(lif, lif->hwstamp_txq, err); 1970 1971 if (lif->rxqcqs) { 1972 for (i = 0; i < lif->nxqs; i++) 1973 err = ionic_qcq_disable(lif, lif->rxqcqs[i], err); 1974 } 1975 1976 if (lif->hwstamp_rxq) 1977 err = ionic_qcq_disable(lif, lif->hwstamp_rxq, err); 1978 1979 ionic_lif_quiesce(lif); 1980 } 1981 1982 static void ionic_txrx_deinit(struct ionic_lif *lif) 1983 { 1984 unsigned int i; 1985 1986 if (lif->txqcqs) { 1987 for (i = 0; i < lif->nxqs && lif->txqcqs[i]; i++) { 1988 ionic_lif_qcq_deinit(lif, lif->txqcqs[i]); 1989 ionic_tx_flush(&lif->txqcqs[i]->cq); 1990 ionic_tx_empty(&lif->txqcqs[i]->q); 1991 } 1992 } 1993 1994 if (lif->rxqcqs) { 1995 for (i = 0; i < lif->nxqs && lif->rxqcqs[i]; i++) { 1996 ionic_lif_qcq_deinit(lif, lif->rxqcqs[i]); 1997 ionic_rx_empty(&lif->rxqcqs[i]->q); 1998 } 1999 } 2000 lif->rx_mode = 0; 2001 2002 if (lif->hwstamp_txq) { 2003 ionic_lif_qcq_deinit(lif, lif->hwstamp_txq); 2004 ionic_tx_flush(&lif->hwstamp_txq->cq); 2005 ionic_tx_empty(&lif->hwstamp_txq->q); 2006 } 2007 2008 if (lif->hwstamp_rxq) { 2009 ionic_lif_qcq_deinit(lif, lif->hwstamp_rxq); 2010 ionic_rx_empty(&lif->hwstamp_rxq->q); 2011 } 2012 } 2013 2014 void ionic_txrx_free(struct ionic_lif *lif) 2015 { 2016 unsigned int i; 2017 2018 if (lif->txqcqs) { 2019 for (i = 0; i < lif->ionic->ntxqs_per_lif && lif->txqcqs[i]; i++) { 2020 ionic_qcq_free(lif, lif->txqcqs[i]); 2021 devm_kfree(lif->ionic->dev, lif->txqcqs[i]); 2022 lif->txqcqs[i] = NULL; 2023 } 2024 } 2025 2026 if (lif->rxqcqs) { 2027 for (i = 0; i < lif->ionic->nrxqs_per_lif && lif->rxqcqs[i]; i++) { 2028 ionic_qcq_free(lif, lif->rxqcqs[i]); 2029 devm_kfree(lif->ionic->dev, lif->rxqcqs[i]); 2030 lif->rxqcqs[i] = NULL; 2031 } 2032 } 2033 2034 if (lif->hwstamp_txq) { 2035 ionic_qcq_free(lif, lif->hwstamp_txq); 2036 devm_kfree(lif->ionic->dev, lif->hwstamp_txq); 2037 lif->hwstamp_txq = NULL; 2038 } 2039 2040 if (lif->hwstamp_rxq) { 2041 ionic_qcq_free(lif, lif->hwstamp_rxq); 2042 devm_kfree(lif->ionic->dev, lif->hwstamp_rxq); 2043 lif->hwstamp_rxq = NULL; 2044 } 2045 } 2046 2047 static int ionic_txrx_alloc(struct ionic_lif *lif) 2048 { 2049 unsigned int comp_sz, desc_sz, num_desc, sg_desc_sz; 2050 unsigned int flags, i; 2051 int err = 0; 2052 2053 num_desc = lif->ntxq_descs; 2054 desc_sz = sizeof(struct ionic_txq_desc); 2055 comp_sz = sizeof(struct ionic_txq_comp); 2056 2057 if (lif->qtype_info[IONIC_QTYPE_TXQ].version >= 1 && 2058 lif->qtype_info[IONIC_QTYPE_TXQ].sg_desc_sz == 2059 sizeof(struct ionic_txq_sg_desc_v1)) 2060 sg_desc_sz = sizeof(struct ionic_txq_sg_desc_v1); 2061 else 2062 sg_desc_sz = sizeof(struct ionic_txq_sg_desc); 2063 2064 flags = IONIC_QCQ_F_TX_STATS | IONIC_QCQ_F_SG; 2065 2066 if (test_bit(IONIC_LIF_F_CMB_TX_RINGS, lif->state)) 2067 flags |= IONIC_QCQ_F_CMB_RINGS; 2068 2069 if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) 2070 flags |= IONIC_QCQ_F_INTR; 2071 2072 for (i = 0; i < lif->nxqs; i++) { 2073 err = ionic_qcq_alloc(lif, IONIC_QTYPE_TXQ, i, "tx", flags, 2074 num_desc, desc_sz, comp_sz, sg_desc_sz, 2075 lif->kern_pid, &lif->txqcqs[i]); 2076 if (err) 2077 goto err_out; 2078 2079 if (flags & IONIC_QCQ_F_INTR) { 2080 ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, 2081 lif->txqcqs[i]->intr.index, 2082 lif->tx_coalesce_hw); 2083 if (test_bit(IONIC_LIF_F_TX_DIM_INTR, lif->state)) 2084 lif->txqcqs[i]->intr.dim_coal_hw = lif->tx_coalesce_hw; 2085 } 2086 2087 ionic_debugfs_add_qcq(lif, lif->txqcqs[i]); 2088 } 2089 2090 flags = IONIC_QCQ_F_RX_STATS | IONIC_QCQ_F_SG | IONIC_QCQ_F_INTR; 2091 2092 if (test_bit(IONIC_LIF_F_CMB_RX_RINGS, lif->state)) 2093 flags |= IONIC_QCQ_F_CMB_RINGS; 2094 2095 num_desc = lif->nrxq_descs; 2096 desc_sz = sizeof(struct ionic_rxq_desc); 2097 comp_sz = sizeof(struct ionic_rxq_comp); 2098 sg_desc_sz = sizeof(struct ionic_rxq_sg_desc); 2099 2100 if (lif->rxq_features & IONIC_Q_F_2X_CQ_DESC) 2101 comp_sz *= 2; 2102 2103 for (i = 0; i < lif->nxqs; i++) { 2104 err = ionic_qcq_alloc(lif, IONIC_QTYPE_RXQ, i, "rx", flags, 2105 num_desc, desc_sz, comp_sz, sg_desc_sz, 2106 lif->kern_pid, &lif->rxqcqs[i]); 2107 if (err) 2108 goto err_out; 2109 2110 lif->rxqcqs[i]->q.features = lif->rxq_features; 2111 2112 ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, 2113 lif->rxqcqs[i]->intr.index, 2114 lif->rx_coalesce_hw); 2115 if (test_bit(IONIC_LIF_F_RX_DIM_INTR, lif->state)) 2116 lif->rxqcqs[i]->intr.dim_coal_hw = lif->rx_coalesce_hw; 2117 2118 if (!test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) 2119 ionic_link_qcq_interrupts(lif->rxqcqs[i], 2120 lif->txqcqs[i]); 2121 2122 ionic_debugfs_add_qcq(lif, lif->rxqcqs[i]); 2123 } 2124 2125 return 0; 2126 2127 err_out: 2128 ionic_txrx_free(lif); 2129 2130 return err; 2131 } 2132 2133 static int ionic_txrx_init(struct ionic_lif *lif) 2134 { 2135 unsigned int i; 2136 int err; 2137 2138 for (i = 0; i < lif->nxqs; i++) { 2139 err = ionic_lif_txq_init(lif, lif->txqcqs[i]); 2140 if (err) 2141 goto err_out; 2142 2143 err = ionic_lif_rxq_init(lif, lif->rxqcqs[i]); 2144 if (err) { 2145 ionic_lif_qcq_deinit(lif, lif->txqcqs[i]); 2146 goto err_out; 2147 } 2148 } 2149 2150 if (lif->netdev->features & NETIF_F_RXHASH) 2151 ionic_lif_rss_init(lif); 2152 2153 ionic_lif_rx_mode(lif); 2154 2155 return 0; 2156 2157 err_out: 2158 while (i--) { 2159 ionic_lif_qcq_deinit(lif, lif->txqcqs[i]); 2160 ionic_lif_qcq_deinit(lif, lif->rxqcqs[i]); 2161 } 2162 2163 return err; 2164 } 2165 2166 static int ionic_txrx_enable(struct ionic_lif *lif) 2167 { 2168 int derr = 0; 2169 int i, err; 2170 2171 for (i = 0; i < lif->nxqs; i++) { 2172 if (!(lif->rxqcqs[i] && lif->txqcqs[i])) { 2173 dev_err(lif->ionic->dev, "%s: bad qcq %d\n", __func__, i); 2174 err = -ENXIO; 2175 goto err_out; 2176 } 2177 2178 ionic_rx_fill(&lif->rxqcqs[i]->q); 2179 err = ionic_qcq_enable(lif->rxqcqs[i]); 2180 if (err) 2181 goto err_out; 2182 2183 err = ionic_qcq_enable(lif->txqcqs[i]); 2184 if (err) { 2185 derr = ionic_qcq_disable(lif, lif->rxqcqs[i], err); 2186 goto err_out; 2187 } 2188 } 2189 2190 if (lif->hwstamp_rxq) { 2191 ionic_rx_fill(&lif->hwstamp_rxq->q); 2192 err = ionic_qcq_enable(lif->hwstamp_rxq); 2193 if (err) 2194 goto err_out_hwstamp_rx; 2195 } 2196 2197 if (lif->hwstamp_txq) { 2198 err = ionic_qcq_enable(lif->hwstamp_txq); 2199 if (err) 2200 goto err_out_hwstamp_tx; 2201 } 2202 2203 return 0; 2204 2205 err_out_hwstamp_tx: 2206 if (lif->hwstamp_rxq) 2207 derr = ionic_qcq_disable(lif, lif->hwstamp_rxq, derr); 2208 err_out_hwstamp_rx: 2209 i = lif->nxqs; 2210 err_out: 2211 while (i--) { 2212 derr = ionic_qcq_disable(lif, lif->txqcqs[i], derr); 2213 derr = ionic_qcq_disable(lif, lif->rxqcqs[i], derr); 2214 } 2215 2216 return err; 2217 } 2218 2219 static int ionic_start_queues(struct ionic_lif *lif) 2220 { 2221 int err; 2222 2223 if (test_bit(IONIC_LIF_F_BROKEN, lif->state)) 2224 return -EIO; 2225 2226 if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) 2227 return -EBUSY; 2228 2229 if (test_and_set_bit(IONIC_LIF_F_UP, lif->state)) 2230 return 0; 2231 2232 err = ionic_txrx_enable(lif); 2233 if (err) { 2234 clear_bit(IONIC_LIF_F_UP, lif->state); 2235 return err; 2236 } 2237 netif_tx_wake_all_queues(lif->netdev); 2238 2239 return 0; 2240 } 2241 2242 static int ionic_open(struct net_device *netdev) 2243 { 2244 struct ionic_lif *lif = netdev_priv(netdev); 2245 int err; 2246 2247 /* If recovering from a broken state, clear the bit and we'll try again */ 2248 if (test_and_clear_bit(IONIC_LIF_F_BROKEN, lif->state)) 2249 netdev_info(netdev, "clearing broken state\n"); 2250 2251 mutex_lock(&lif->queue_lock); 2252 2253 err = ionic_txrx_alloc(lif); 2254 if (err) 2255 goto err_unlock; 2256 2257 err = ionic_txrx_init(lif); 2258 if (err) 2259 goto err_txrx_free; 2260 2261 err = netif_set_real_num_tx_queues(netdev, lif->nxqs); 2262 if (err) 2263 goto err_txrx_deinit; 2264 2265 err = netif_set_real_num_rx_queues(netdev, lif->nxqs); 2266 if (err) 2267 goto err_txrx_deinit; 2268 2269 /* don't start the queues until we have link */ 2270 if (netif_carrier_ok(netdev)) { 2271 err = ionic_start_queues(lif); 2272 if (err) 2273 goto err_txrx_deinit; 2274 } 2275 2276 /* If hardware timestamping is enabled, but the queues were freed by 2277 * ionic_stop, those need to be reallocated and initialized, too. 2278 */ 2279 ionic_lif_hwstamp_recreate_queues(lif); 2280 2281 mutex_unlock(&lif->queue_lock); 2282 2283 return 0; 2284 2285 err_txrx_deinit: 2286 ionic_txrx_deinit(lif); 2287 err_txrx_free: 2288 ionic_txrx_free(lif); 2289 err_unlock: 2290 mutex_unlock(&lif->queue_lock); 2291 return err; 2292 } 2293 2294 static void ionic_stop_queues(struct ionic_lif *lif) 2295 { 2296 if (!test_and_clear_bit(IONIC_LIF_F_UP, lif->state)) 2297 return; 2298 2299 netif_tx_disable(lif->netdev); 2300 ionic_txrx_disable(lif); 2301 } 2302 2303 static int ionic_stop(struct net_device *netdev) 2304 { 2305 struct ionic_lif *lif = netdev_priv(netdev); 2306 2307 if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) 2308 return 0; 2309 2310 mutex_lock(&lif->queue_lock); 2311 ionic_stop_queues(lif); 2312 ionic_txrx_deinit(lif); 2313 ionic_txrx_free(lif); 2314 mutex_unlock(&lif->queue_lock); 2315 2316 return 0; 2317 } 2318 2319 static int ionic_eth_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) 2320 { 2321 struct ionic_lif *lif = netdev_priv(netdev); 2322 2323 switch (cmd) { 2324 case SIOCSHWTSTAMP: 2325 return ionic_lif_hwstamp_set(lif, ifr); 2326 case SIOCGHWTSTAMP: 2327 return ionic_lif_hwstamp_get(lif, ifr); 2328 default: 2329 return -EOPNOTSUPP; 2330 } 2331 } 2332 2333 static int ionic_get_fw_vf_config(struct ionic *ionic, int vf, struct ionic_vf *vfdata) 2334 { 2335 struct ionic_vf_getattr_comp comp = { 0 }; 2336 int err; 2337 u8 attr; 2338 2339 attr = IONIC_VF_ATTR_VLAN; 2340 err = ionic_dev_cmd_vf_getattr(ionic, vf, attr, &comp); 2341 if (err && comp.status != IONIC_RC_ENOSUPP) 2342 goto err_out; 2343 if (!err) 2344 vfdata->vlanid = comp.vlanid; 2345 2346 attr = IONIC_VF_ATTR_SPOOFCHK; 2347 err = ionic_dev_cmd_vf_getattr(ionic, vf, attr, &comp); 2348 if (err && comp.status != IONIC_RC_ENOSUPP) 2349 goto err_out; 2350 if (!err) 2351 vfdata->spoofchk = comp.spoofchk; 2352 2353 attr = IONIC_VF_ATTR_LINKSTATE; 2354 err = ionic_dev_cmd_vf_getattr(ionic, vf, attr, &comp); 2355 if (err && comp.status != IONIC_RC_ENOSUPP) 2356 goto err_out; 2357 if (!err) { 2358 switch (comp.linkstate) { 2359 case IONIC_VF_LINK_STATUS_UP: 2360 vfdata->linkstate = IFLA_VF_LINK_STATE_ENABLE; 2361 break; 2362 case IONIC_VF_LINK_STATUS_DOWN: 2363 vfdata->linkstate = IFLA_VF_LINK_STATE_DISABLE; 2364 break; 2365 case IONIC_VF_LINK_STATUS_AUTO: 2366 vfdata->linkstate = IFLA_VF_LINK_STATE_AUTO; 2367 break; 2368 default: 2369 dev_warn(ionic->dev, "Unexpected link state %u\n", comp.linkstate); 2370 break; 2371 } 2372 } 2373 2374 attr = IONIC_VF_ATTR_RATE; 2375 err = ionic_dev_cmd_vf_getattr(ionic, vf, attr, &comp); 2376 if (err && comp.status != IONIC_RC_ENOSUPP) 2377 goto err_out; 2378 if (!err) 2379 vfdata->maxrate = comp.maxrate; 2380 2381 attr = IONIC_VF_ATTR_TRUST; 2382 err = ionic_dev_cmd_vf_getattr(ionic, vf, attr, &comp); 2383 if (err && comp.status != IONIC_RC_ENOSUPP) 2384 goto err_out; 2385 if (!err) 2386 vfdata->trusted = comp.trust; 2387 2388 attr = IONIC_VF_ATTR_MAC; 2389 err = ionic_dev_cmd_vf_getattr(ionic, vf, attr, &comp); 2390 if (err && comp.status != IONIC_RC_ENOSUPP) 2391 goto err_out; 2392 if (!err) 2393 ether_addr_copy(vfdata->macaddr, comp.macaddr); 2394 2395 err_out: 2396 if (err) 2397 dev_err(ionic->dev, "Failed to get %s for VF %d\n", 2398 ionic_vf_attr_to_str(attr), vf); 2399 2400 return err; 2401 } 2402 2403 static int ionic_get_vf_config(struct net_device *netdev, 2404 int vf, struct ifla_vf_info *ivf) 2405 { 2406 struct ionic_lif *lif = netdev_priv(netdev); 2407 struct ionic *ionic = lif->ionic; 2408 struct ionic_vf vfdata = { 0 }; 2409 int ret = 0; 2410 2411 if (!netif_device_present(netdev)) 2412 return -EBUSY; 2413 2414 down_read(&ionic->vf_op_lock); 2415 2416 if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { 2417 ret = -EINVAL; 2418 } else { 2419 ivf->vf = vf; 2420 ivf->qos = 0; 2421 2422 ret = ionic_get_fw_vf_config(ionic, vf, &vfdata); 2423 if (!ret) { 2424 ivf->vlan = le16_to_cpu(vfdata.vlanid); 2425 ivf->spoofchk = vfdata.spoofchk; 2426 ivf->linkstate = vfdata.linkstate; 2427 ivf->max_tx_rate = le32_to_cpu(vfdata.maxrate); 2428 ivf->trusted = vfdata.trusted; 2429 ether_addr_copy(ivf->mac, vfdata.macaddr); 2430 } 2431 } 2432 2433 up_read(&ionic->vf_op_lock); 2434 return ret; 2435 } 2436 2437 static int ionic_get_vf_stats(struct net_device *netdev, int vf, 2438 struct ifla_vf_stats *vf_stats) 2439 { 2440 struct ionic_lif *lif = netdev_priv(netdev); 2441 struct ionic *ionic = lif->ionic; 2442 struct ionic_lif_stats *vs; 2443 int ret = 0; 2444 2445 if (!netif_device_present(netdev)) 2446 return -EBUSY; 2447 2448 down_read(&ionic->vf_op_lock); 2449 2450 if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { 2451 ret = -EINVAL; 2452 } else { 2453 memset(vf_stats, 0, sizeof(*vf_stats)); 2454 vs = &ionic->vfs[vf].stats; 2455 2456 vf_stats->rx_packets = le64_to_cpu(vs->rx_ucast_packets); 2457 vf_stats->tx_packets = le64_to_cpu(vs->tx_ucast_packets); 2458 vf_stats->rx_bytes = le64_to_cpu(vs->rx_ucast_bytes); 2459 vf_stats->tx_bytes = le64_to_cpu(vs->tx_ucast_bytes); 2460 vf_stats->broadcast = le64_to_cpu(vs->rx_bcast_packets); 2461 vf_stats->multicast = le64_to_cpu(vs->rx_mcast_packets); 2462 vf_stats->rx_dropped = le64_to_cpu(vs->rx_ucast_drop_packets) + 2463 le64_to_cpu(vs->rx_mcast_drop_packets) + 2464 le64_to_cpu(vs->rx_bcast_drop_packets); 2465 vf_stats->tx_dropped = le64_to_cpu(vs->tx_ucast_drop_packets) + 2466 le64_to_cpu(vs->tx_mcast_drop_packets) + 2467 le64_to_cpu(vs->tx_bcast_drop_packets); 2468 } 2469 2470 up_read(&ionic->vf_op_lock); 2471 return ret; 2472 } 2473 2474 static int ionic_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) 2475 { 2476 struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_MAC }; 2477 struct ionic_lif *lif = netdev_priv(netdev); 2478 struct ionic *ionic = lif->ionic; 2479 int ret; 2480 2481 if (!(is_zero_ether_addr(mac) || is_valid_ether_addr(mac))) 2482 return -EINVAL; 2483 2484 if (!netif_device_present(netdev)) 2485 return -EBUSY; 2486 2487 down_write(&ionic->vf_op_lock); 2488 2489 if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { 2490 ret = -EINVAL; 2491 } else { 2492 ether_addr_copy(vfc.macaddr, mac); 2493 dev_dbg(ionic->dev, "%s: vf %d macaddr %pM\n", 2494 __func__, vf, vfc.macaddr); 2495 2496 ret = ionic_set_vf_config(ionic, vf, &vfc); 2497 if (!ret) 2498 ether_addr_copy(ionic->vfs[vf].macaddr, mac); 2499 } 2500 2501 up_write(&ionic->vf_op_lock); 2502 return ret; 2503 } 2504 2505 static int ionic_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, 2506 u8 qos, __be16 proto) 2507 { 2508 struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_VLAN }; 2509 struct ionic_lif *lif = netdev_priv(netdev); 2510 struct ionic *ionic = lif->ionic; 2511 int ret; 2512 2513 /* until someday when we support qos */ 2514 if (qos) 2515 return -EINVAL; 2516 2517 if (vlan > 4095) 2518 return -EINVAL; 2519 2520 if (proto != htons(ETH_P_8021Q)) 2521 return -EPROTONOSUPPORT; 2522 2523 if (!netif_device_present(netdev)) 2524 return -EBUSY; 2525 2526 down_write(&ionic->vf_op_lock); 2527 2528 if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { 2529 ret = -EINVAL; 2530 } else { 2531 vfc.vlanid = cpu_to_le16(vlan); 2532 dev_dbg(ionic->dev, "%s: vf %d vlan %d\n", 2533 __func__, vf, le16_to_cpu(vfc.vlanid)); 2534 2535 ret = ionic_set_vf_config(ionic, vf, &vfc); 2536 if (!ret) 2537 ionic->vfs[vf].vlanid = cpu_to_le16(vlan); 2538 } 2539 2540 up_write(&ionic->vf_op_lock); 2541 return ret; 2542 } 2543 2544 static int ionic_set_vf_rate(struct net_device *netdev, int vf, 2545 int tx_min, int tx_max) 2546 { 2547 struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_RATE }; 2548 struct ionic_lif *lif = netdev_priv(netdev); 2549 struct ionic *ionic = lif->ionic; 2550 int ret; 2551 2552 /* setting the min just seems silly */ 2553 if (tx_min) 2554 return -EINVAL; 2555 2556 if (!netif_device_present(netdev)) 2557 return -EBUSY; 2558 2559 down_write(&ionic->vf_op_lock); 2560 2561 if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { 2562 ret = -EINVAL; 2563 } else { 2564 vfc.maxrate = cpu_to_le32(tx_max); 2565 dev_dbg(ionic->dev, "%s: vf %d maxrate %d\n", 2566 __func__, vf, le32_to_cpu(vfc.maxrate)); 2567 2568 ret = ionic_set_vf_config(ionic, vf, &vfc); 2569 if (!ret) 2570 ionic->vfs[vf].maxrate = cpu_to_le32(tx_max); 2571 } 2572 2573 up_write(&ionic->vf_op_lock); 2574 return ret; 2575 } 2576 2577 static int ionic_set_vf_spoofchk(struct net_device *netdev, int vf, bool set) 2578 { 2579 struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_SPOOFCHK }; 2580 struct ionic_lif *lif = netdev_priv(netdev); 2581 struct ionic *ionic = lif->ionic; 2582 int ret; 2583 2584 if (!netif_device_present(netdev)) 2585 return -EBUSY; 2586 2587 down_write(&ionic->vf_op_lock); 2588 2589 if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { 2590 ret = -EINVAL; 2591 } else { 2592 vfc.spoofchk = set; 2593 dev_dbg(ionic->dev, "%s: vf %d spoof %d\n", 2594 __func__, vf, vfc.spoofchk); 2595 2596 ret = ionic_set_vf_config(ionic, vf, &vfc); 2597 if (!ret) 2598 ionic->vfs[vf].spoofchk = set; 2599 } 2600 2601 up_write(&ionic->vf_op_lock); 2602 return ret; 2603 } 2604 2605 static int ionic_set_vf_trust(struct net_device *netdev, int vf, bool set) 2606 { 2607 struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_TRUST }; 2608 struct ionic_lif *lif = netdev_priv(netdev); 2609 struct ionic *ionic = lif->ionic; 2610 int ret; 2611 2612 if (!netif_device_present(netdev)) 2613 return -EBUSY; 2614 2615 down_write(&ionic->vf_op_lock); 2616 2617 if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { 2618 ret = -EINVAL; 2619 } else { 2620 vfc.trust = set; 2621 dev_dbg(ionic->dev, "%s: vf %d trust %d\n", 2622 __func__, vf, vfc.trust); 2623 2624 ret = ionic_set_vf_config(ionic, vf, &vfc); 2625 if (!ret) 2626 ionic->vfs[vf].trusted = set; 2627 } 2628 2629 up_write(&ionic->vf_op_lock); 2630 return ret; 2631 } 2632 2633 static int ionic_set_vf_link_state(struct net_device *netdev, int vf, int set) 2634 { 2635 struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_LINKSTATE }; 2636 struct ionic_lif *lif = netdev_priv(netdev); 2637 struct ionic *ionic = lif->ionic; 2638 u8 vfls; 2639 int ret; 2640 2641 switch (set) { 2642 case IFLA_VF_LINK_STATE_ENABLE: 2643 vfls = IONIC_VF_LINK_STATUS_UP; 2644 break; 2645 case IFLA_VF_LINK_STATE_DISABLE: 2646 vfls = IONIC_VF_LINK_STATUS_DOWN; 2647 break; 2648 case IFLA_VF_LINK_STATE_AUTO: 2649 vfls = IONIC_VF_LINK_STATUS_AUTO; 2650 break; 2651 default: 2652 return -EINVAL; 2653 } 2654 2655 if (!netif_device_present(netdev)) 2656 return -EBUSY; 2657 2658 down_write(&ionic->vf_op_lock); 2659 2660 if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { 2661 ret = -EINVAL; 2662 } else { 2663 vfc.linkstate = vfls; 2664 dev_dbg(ionic->dev, "%s: vf %d linkstate %d\n", 2665 __func__, vf, vfc.linkstate); 2666 2667 ret = ionic_set_vf_config(ionic, vf, &vfc); 2668 if (!ret) 2669 ionic->vfs[vf].linkstate = set; 2670 } 2671 2672 up_write(&ionic->vf_op_lock); 2673 return ret; 2674 } 2675 2676 static void ionic_vf_attr_replay(struct ionic_lif *lif) 2677 { 2678 struct ionic_vf_setattr_cmd vfc = { }; 2679 struct ionic *ionic = lif->ionic; 2680 struct ionic_vf *v; 2681 int i; 2682 2683 if (!ionic->vfs) 2684 return; 2685 2686 down_read(&ionic->vf_op_lock); 2687 2688 for (i = 0; i < ionic->num_vfs; i++) { 2689 v = &ionic->vfs[i]; 2690 2691 if (v->stats_pa) { 2692 vfc.attr = IONIC_VF_ATTR_STATSADDR; 2693 vfc.stats_pa = cpu_to_le64(v->stats_pa); 2694 ionic_set_vf_config(ionic, i, &vfc); 2695 vfc.stats_pa = 0; 2696 } 2697 2698 if (!is_zero_ether_addr(v->macaddr)) { 2699 vfc.attr = IONIC_VF_ATTR_MAC; 2700 ether_addr_copy(vfc.macaddr, v->macaddr); 2701 ionic_set_vf_config(ionic, i, &vfc); 2702 eth_zero_addr(vfc.macaddr); 2703 } 2704 2705 if (v->vlanid) { 2706 vfc.attr = IONIC_VF_ATTR_VLAN; 2707 vfc.vlanid = v->vlanid; 2708 ionic_set_vf_config(ionic, i, &vfc); 2709 vfc.vlanid = 0; 2710 } 2711 2712 if (v->maxrate) { 2713 vfc.attr = IONIC_VF_ATTR_RATE; 2714 vfc.maxrate = v->maxrate; 2715 ionic_set_vf_config(ionic, i, &vfc); 2716 vfc.maxrate = 0; 2717 } 2718 2719 if (v->spoofchk) { 2720 vfc.attr = IONIC_VF_ATTR_SPOOFCHK; 2721 vfc.spoofchk = v->spoofchk; 2722 ionic_set_vf_config(ionic, i, &vfc); 2723 vfc.spoofchk = 0; 2724 } 2725 2726 if (v->trusted) { 2727 vfc.attr = IONIC_VF_ATTR_TRUST; 2728 vfc.trust = v->trusted; 2729 ionic_set_vf_config(ionic, i, &vfc); 2730 vfc.trust = 0; 2731 } 2732 2733 if (v->linkstate) { 2734 vfc.attr = IONIC_VF_ATTR_LINKSTATE; 2735 vfc.linkstate = v->linkstate; 2736 ionic_set_vf_config(ionic, i, &vfc); 2737 vfc.linkstate = 0; 2738 } 2739 } 2740 2741 up_read(&ionic->vf_op_lock); 2742 2743 ionic_vf_start(ionic); 2744 } 2745 2746 static const struct net_device_ops ionic_netdev_ops = { 2747 .ndo_open = ionic_open, 2748 .ndo_stop = ionic_stop, 2749 .ndo_eth_ioctl = ionic_eth_ioctl, 2750 .ndo_start_xmit = ionic_start_xmit, 2751 .ndo_get_stats64 = ionic_get_stats64, 2752 .ndo_set_rx_mode = ionic_ndo_set_rx_mode, 2753 .ndo_set_features = ionic_set_features, 2754 .ndo_set_mac_address = ionic_set_mac_address, 2755 .ndo_validate_addr = eth_validate_addr, 2756 .ndo_tx_timeout = ionic_tx_timeout, 2757 .ndo_change_mtu = ionic_change_mtu, 2758 .ndo_vlan_rx_add_vid = ionic_vlan_rx_add_vid, 2759 .ndo_vlan_rx_kill_vid = ionic_vlan_rx_kill_vid, 2760 .ndo_set_vf_vlan = ionic_set_vf_vlan, 2761 .ndo_set_vf_trust = ionic_set_vf_trust, 2762 .ndo_set_vf_mac = ionic_set_vf_mac, 2763 .ndo_set_vf_rate = ionic_set_vf_rate, 2764 .ndo_set_vf_spoofchk = ionic_set_vf_spoofchk, 2765 .ndo_get_vf_config = ionic_get_vf_config, 2766 .ndo_set_vf_link_state = ionic_set_vf_link_state, 2767 .ndo_get_vf_stats = ionic_get_vf_stats, 2768 }; 2769 2770 static int ionic_cmb_reconfig(struct ionic_lif *lif, 2771 struct ionic_queue_params *qparam) 2772 { 2773 struct ionic_queue_params start_qparams; 2774 int err = 0; 2775 2776 /* When changing CMB queue parameters, we're using limited 2777 * on-device memory and don't have extra memory to use for 2778 * duplicate allocations, so we free it all first then 2779 * re-allocate with the new parameters. 2780 */ 2781 2782 /* Checkpoint for possible unwind */ 2783 ionic_init_queue_params(lif, &start_qparams); 2784 2785 /* Stop and free the queues */ 2786 ionic_stop_queues_reconfig(lif); 2787 ionic_txrx_free(lif); 2788 2789 /* Set up new qparams */ 2790 ionic_set_queue_params(lif, qparam); 2791 2792 if (netif_running(lif->netdev)) { 2793 /* Alloc and start the new configuration */ 2794 err = ionic_txrx_alloc(lif); 2795 if (err) { 2796 dev_warn(lif->ionic->dev, 2797 "CMB reconfig failed, restoring values: %d\n", err); 2798 2799 /* Back out the changes */ 2800 ionic_set_queue_params(lif, &start_qparams); 2801 err = ionic_txrx_alloc(lif); 2802 if (err) { 2803 dev_err(lif->ionic->dev, 2804 "CMB restore failed: %d\n", err); 2805 goto err_out; 2806 } 2807 } 2808 2809 err = ionic_start_queues_reconfig(lif); 2810 if (err) { 2811 dev_err(lif->ionic->dev, 2812 "CMB reconfig failed: %d\n", err); 2813 goto err_out; 2814 } 2815 } 2816 2817 err_out: 2818 /* This was detached in ionic_stop_queues_reconfig() */ 2819 netif_device_attach(lif->netdev); 2820 2821 return err; 2822 } 2823 2824 static void ionic_swap_queues(struct ionic_qcq *a, struct ionic_qcq *b) 2825 { 2826 /* only swapping the queues, not the napi, flags, or other stuff */ 2827 swap(a->q.features, b->q.features); 2828 swap(a->q.num_descs, b->q.num_descs); 2829 swap(a->q.desc_size, b->q.desc_size); 2830 swap(a->q.base, b->q.base); 2831 swap(a->q.base_pa, b->q.base_pa); 2832 swap(a->q.info, b->q.info); 2833 swap(a->q_base, b->q_base); 2834 swap(a->q_base_pa, b->q_base_pa); 2835 swap(a->q_size, b->q_size); 2836 2837 swap(a->q.sg_desc_size, b->q.sg_desc_size); 2838 swap(a->q.sg_base, b->q.sg_base); 2839 swap(a->q.sg_base_pa, b->q.sg_base_pa); 2840 swap(a->sg_base, b->sg_base); 2841 swap(a->sg_base_pa, b->sg_base_pa); 2842 swap(a->sg_size, b->sg_size); 2843 2844 swap(a->cq.num_descs, b->cq.num_descs); 2845 swap(a->cq.desc_size, b->cq.desc_size); 2846 swap(a->cq.base, b->cq.base); 2847 swap(a->cq.base_pa, b->cq.base_pa); 2848 swap(a->cq.info, b->cq.info); 2849 swap(a->cq_base, b->cq_base); 2850 swap(a->cq_base_pa, b->cq_base_pa); 2851 swap(a->cq_size, b->cq_size); 2852 2853 ionic_debugfs_del_qcq(a); 2854 ionic_debugfs_add_qcq(a->q.lif, a); 2855 } 2856 2857 int ionic_reconfigure_queues(struct ionic_lif *lif, 2858 struct ionic_queue_params *qparam) 2859 { 2860 unsigned int comp_sz, desc_sz, num_desc, sg_desc_sz; 2861 struct ionic_qcq **tx_qcqs = NULL; 2862 struct ionic_qcq **rx_qcqs = NULL; 2863 unsigned int flags, i; 2864 int err = 0; 2865 2866 /* Are we changing q params while CMB is on */ 2867 if ((test_bit(IONIC_LIF_F_CMB_TX_RINGS, lif->state) && qparam->cmb_tx) || 2868 (test_bit(IONIC_LIF_F_CMB_RX_RINGS, lif->state) && qparam->cmb_rx)) 2869 return ionic_cmb_reconfig(lif, qparam); 2870 2871 /* allocate temporary qcq arrays to hold new queue structs */ 2872 if (qparam->nxqs != lif->nxqs || qparam->ntxq_descs != lif->ntxq_descs) { 2873 tx_qcqs = devm_kcalloc(lif->ionic->dev, lif->ionic->ntxqs_per_lif, 2874 sizeof(struct ionic_qcq *), GFP_KERNEL); 2875 if (!tx_qcqs) { 2876 err = -ENOMEM; 2877 goto err_out; 2878 } 2879 } 2880 if (qparam->nxqs != lif->nxqs || 2881 qparam->nrxq_descs != lif->nrxq_descs || 2882 qparam->rxq_features != lif->rxq_features) { 2883 rx_qcqs = devm_kcalloc(lif->ionic->dev, lif->ionic->nrxqs_per_lif, 2884 sizeof(struct ionic_qcq *), GFP_KERNEL); 2885 if (!rx_qcqs) { 2886 err = -ENOMEM; 2887 goto err_out; 2888 } 2889 } 2890 2891 /* allocate new desc_info and rings, but leave the interrupt setup 2892 * until later so as to not mess with the still-running queues 2893 */ 2894 if (tx_qcqs) { 2895 num_desc = qparam->ntxq_descs; 2896 desc_sz = sizeof(struct ionic_txq_desc); 2897 comp_sz = sizeof(struct ionic_txq_comp); 2898 2899 if (lif->qtype_info[IONIC_QTYPE_TXQ].version >= 1 && 2900 lif->qtype_info[IONIC_QTYPE_TXQ].sg_desc_sz == 2901 sizeof(struct ionic_txq_sg_desc_v1)) 2902 sg_desc_sz = sizeof(struct ionic_txq_sg_desc_v1); 2903 else 2904 sg_desc_sz = sizeof(struct ionic_txq_sg_desc); 2905 2906 for (i = 0; i < qparam->nxqs; i++) { 2907 /* If missing, short placeholder qcq needed for swap */ 2908 if (!lif->txqcqs[i]) { 2909 flags = IONIC_QCQ_F_TX_STATS | IONIC_QCQ_F_SG; 2910 err = ionic_qcq_alloc(lif, IONIC_QTYPE_TXQ, i, "tx", flags, 2911 4, desc_sz, comp_sz, sg_desc_sz, 2912 lif->kern_pid, &lif->txqcqs[i]); 2913 if (err) 2914 goto err_out; 2915 } 2916 2917 flags = lif->txqcqs[i]->flags & ~IONIC_QCQ_F_INTR; 2918 err = ionic_qcq_alloc(lif, IONIC_QTYPE_TXQ, i, "tx", flags, 2919 num_desc, desc_sz, comp_sz, sg_desc_sz, 2920 lif->kern_pid, &tx_qcqs[i]); 2921 if (err) 2922 goto err_out; 2923 } 2924 } 2925 2926 if (rx_qcqs) { 2927 num_desc = qparam->nrxq_descs; 2928 desc_sz = sizeof(struct ionic_rxq_desc); 2929 comp_sz = sizeof(struct ionic_rxq_comp); 2930 sg_desc_sz = sizeof(struct ionic_rxq_sg_desc); 2931 2932 if (qparam->rxq_features & IONIC_Q_F_2X_CQ_DESC) 2933 comp_sz *= 2; 2934 2935 for (i = 0; i < qparam->nxqs; i++) { 2936 /* If missing, short placeholder qcq needed for swap */ 2937 if (!lif->rxqcqs[i]) { 2938 flags = IONIC_QCQ_F_RX_STATS | IONIC_QCQ_F_SG; 2939 err = ionic_qcq_alloc(lif, IONIC_QTYPE_RXQ, i, "rx", flags, 2940 4, desc_sz, comp_sz, sg_desc_sz, 2941 lif->kern_pid, &lif->rxqcqs[i]); 2942 if (err) 2943 goto err_out; 2944 } 2945 2946 flags = lif->rxqcqs[i]->flags & ~IONIC_QCQ_F_INTR; 2947 err = ionic_qcq_alloc(lif, IONIC_QTYPE_RXQ, i, "rx", flags, 2948 num_desc, desc_sz, comp_sz, sg_desc_sz, 2949 lif->kern_pid, &rx_qcqs[i]); 2950 if (err) 2951 goto err_out; 2952 2953 rx_qcqs[i]->q.features = qparam->rxq_features; 2954 } 2955 } 2956 2957 /* stop and clean the queues */ 2958 ionic_stop_queues_reconfig(lif); 2959 2960 if (qparam->nxqs != lif->nxqs) { 2961 err = netif_set_real_num_tx_queues(lif->netdev, qparam->nxqs); 2962 if (err) 2963 goto err_out_reinit_unlock; 2964 err = netif_set_real_num_rx_queues(lif->netdev, qparam->nxqs); 2965 if (err) { 2966 netif_set_real_num_tx_queues(lif->netdev, lif->nxqs); 2967 goto err_out_reinit_unlock; 2968 } 2969 } 2970 2971 /* swap new desc_info and rings, keeping existing interrupt config */ 2972 if (tx_qcqs) { 2973 lif->ntxq_descs = qparam->ntxq_descs; 2974 for (i = 0; i < qparam->nxqs; i++) 2975 ionic_swap_queues(lif->txqcqs[i], tx_qcqs[i]); 2976 } 2977 2978 if (rx_qcqs) { 2979 lif->nrxq_descs = qparam->nrxq_descs; 2980 for (i = 0; i < qparam->nxqs; i++) 2981 ionic_swap_queues(lif->rxqcqs[i], rx_qcqs[i]); 2982 } 2983 2984 /* if we need to change the interrupt layout, this is the time */ 2985 if (qparam->intr_split != test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state) || 2986 qparam->nxqs != lif->nxqs) { 2987 if (qparam->intr_split) { 2988 set_bit(IONIC_LIF_F_SPLIT_INTR, lif->state); 2989 } else { 2990 clear_bit(IONIC_LIF_F_SPLIT_INTR, lif->state); 2991 lif->tx_coalesce_usecs = lif->rx_coalesce_usecs; 2992 lif->tx_coalesce_hw = lif->rx_coalesce_hw; 2993 } 2994 2995 /* Clear existing interrupt assignments. We check for NULL here 2996 * because we're checking the whole array for potential qcqs, not 2997 * just those qcqs that have just been set up. 2998 */ 2999 for (i = 0; i < lif->ionic->ntxqs_per_lif; i++) { 3000 if (lif->txqcqs[i]) 3001 ionic_qcq_intr_free(lif, lif->txqcqs[i]); 3002 if (lif->rxqcqs[i]) 3003 ionic_qcq_intr_free(lif, lif->rxqcqs[i]); 3004 } 3005 3006 /* re-assign the interrupts */ 3007 for (i = 0; i < qparam->nxqs; i++) { 3008 lif->rxqcqs[i]->flags |= IONIC_QCQ_F_INTR; 3009 err = ionic_alloc_qcq_interrupt(lif, lif->rxqcqs[i]); 3010 ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, 3011 lif->rxqcqs[i]->intr.index, 3012 lif->rx_coalesce_hw); 3013 3014 if (qparam->intr_split) { 3015 lif->txqcqs[i]->flags |= IONIC_QCQ_F_INTR; 3016 err = ionic_alloc_qcq_interrupt(lif, lif->txqcqs[i]); 3017 ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, 3018 lif->txqcqs[i]->intr.index, 3019 lif->tx_coalesce_hw); 3020 if (test_bit(IONIC_LIF_F_TX_DIM_INTR, lif->state)) 3021 lif->txqcqs[i]->intr.dim_coal_hw = lif->tx_coalesce_hw; 3022 } else { 3023 lif->txqcqs[i]->flags &= ~IONIC_QCQ_F_INTR; 3024 ionic_link_qcq_interrupts(lif->rxqcqs[i], lif->txqcqs[i]); 3025 } 3026 } 3027 } 3028 3029 /* now we can rework the debugfs mappings */ 3030 if (tx_qcqs) { 3031 for (i = 0; i < qparam->nxqs; i++) { 3032 ionic_debugfs_del_qcq(lif->txqcqs[i]); 3033 ionic_debugfs_add_qcq(lif, lif->txqcqs[i]); 3034 } 3035 } 3036 3037 if (rx_qcqs) { 3038 for (i = 0; i < qparam->nxqs; i++) { 3039 ionic_debugfs_del_qcq(lif->rxqcqs[i]); 3040 ionic_debugfs_add_qcq(lif, lif->rxqcqs[i]); 3041 } 3042 } 3043 3044 swap(lif->nxqs, qparam->nxqs); 3045 swap(lif->rxq_features, qparam->rxq_features); 3046 3047 err_out_reinit_unlock: 3048 /* re-init the queues, but don't lose an error code */ 3049 if (err) 3050 ionic_start_queues_reconfig(lif); 3051 else 3052 err = ionic_start_queues_reconfig(lif); 3053 3054 err_out: 3055 /* free old allocs without cleaning intr */ 3056 for (i = 0; i < qparam->nxqs; i++) { 3057 if (tx_qcqs && tx_qcqs[i]) { 3058 tx_qcqs[i]->flags &= ~IONIC_QCQ_F_INTR; 3059 ionic_qcq_free(lif, tx_qcqs[i]); 3060 devm_kfree(lif->ionic->dev, tx_qcqs[i]); 3061 tx_qcqs[i] = NULL; 3062 } 3063 if (rx_qcqs && rx_qcqs[i]) { 3064 rx_qcqs[i]->flags &= ~IONIC_QCQ_F_INTR; 3065 ionic_qcq_free(lif, rx_qcqs[i]); 3066 devm_kfree(lif->ionic->dev, rx_qcqs[i]); 3067 rx_qcqs[i] = NULL; 3068 } 3069 } 3070 3071 /* free q array */ 3072 if (rx_qcqs) { 3073 devm_kfree(lif->ionic->dev, rx_qcqs); 3074 rx_qcqs = NULL; 3075 } 3076 if (tx_qcqs) { 3077 devm_kfree(lif->ionic->dev, tx_qcqs); 3078 tx_qcqs = NULL; 3079 } 3080 3081 /* clean the unused dma and info allocations when new set is smaller 3082 * than the full array, but leave the qcq shells in place 3083 */ 3084 for (i = lif->nxqs; i < lif->ionic->ntxqs_per_lif; i++) { 3085 if (lif->txqcqs && lif->txqcqs[i]) { 3086 lif->txqcqs[i]->flags &= ~IONIC_QCQ_F_INTR; 3087 ionic_qcq_free(lif, lif->txqcqs[i]); 3088 } 3089 3090 if (lif->rxqcqs && lif->rxqcqs[i]) { 3091 lif->rxqcqs[i]->flags &= ~IONIC_QCQ_F_INTR; 3092 ionic_qcq_free(lif, lif->rxqcqs[i]); 3093 } 3094 } 3095 3096 if (err) 3097 netdev_info(lif->netdev, "%s: failed %d\n", __func__, err); 3098 3099 return err; 3100 } 3101 3102 int ionic_lif_alloc(struct ionic *ionic) 3103 { 3104 struct device *dev = ionic->dev; 3105 union ionic_lif_identity *lid; 3106 struct net_device *netdev; 3107 struct ionic_lif *lif; 3108 int tbl_sz; 3109 int err; 3110 3111 lid = kzalloc(sizeof(*lid), GFP_KERNEL); 3112 if (!lid) 3113 return -ENOMEM; 3114 3115 netdev = alloc_etherdev_mqs(sizeof(*lif), 3116 ionic->ntxqs_per_lif, ionic->ntxqs_per_lif); 3117 if (!netdev) { 3118 dev_err(dev, "Cannot allocate netdev, aborting\n"); 3119 err = -ENOMEM; 3120 goto err_out_free_lid; 3121 } 3122 3123 SET_NETDEV_DEV(netdev, dev); 3124 3125 lif = netdev_priv(netdev); 3126 lif->netdev = netdev; 3127 ionic->lif = lif; 3128 netdev->netdev_ops = &ionic_netdev_ops; 3129 ionic_ethtool_set_ops(netdev); 3130 3131 netdev->watchdog_timeo = 2 * HZ; 3132 netif_carrier_off(netdev); 3133 3134 lif->identity = lid; 3135 lif->lif_type = IONIC_LIF_TYPE_CLASSIC; 3136 err = ionic_lif_identify(ionic, lif->lif_type, lif->identity); 3137 if (err) { 3138 dev_err(ionic->dev, "Cannot identify type %d: %d\n", 3139 lif->lif_type, err); 3140 goto err_out_free_netdev; 3141 } 3142 lif->netdev->min_mtu = max_t(unsigned int, ETH_MIN_MTU, 3143 le32_to_cpu(lif->identity->eth.min_frame_size)); 3144 lif->netdev->max_mtu = 3145 le32_to_cpu(lif->identity->eth.max_frame_size) - ETH_HLEN - VLAN_HLEN; 3146 3147 lif->neqs = ionic->neqs_per_lif; 3148 lif->nxqs = ionic->ntxqs_per_lif; 3149 3150 lif->ionic = ionic; 3151 lif->index = 0; 3152 3153 if (is_kdump_kernel()) { 3154 lif->ntxq_descs = IONIC_MIN_TXRX_DESC; 3155 lif->nrxq_descs = IONIC_MIN_TXRX_DESC; 3156 } else { 3157 lif->ntxq_descs = IONIC_DEF_TXRX_DESC; 3158 lif->nrxq_descs = IONIC_DEF_TXRX_DESC; 3159 } 3160 3161 /* Convert the default coalesce value to actual hw resolution */ 3162 lif->rx_coalesce_usecs = IONIC_ITR_COAL_USEC_DEFAULT; 3163 lif->rx_coalesce_hw = ionic_coal_usec_to_hw(lif->ionic, 3164 lif->rx_coalesce_usecs); 3165 lif->tx_coalesce_usecs = lif->rx_coalesce_usecs; 3166 lif->tx_coalesce_hw = lif->rx_coalesce_hw; 3167 set_bit(IONIC_LIF_F_RX_DIM_INTR, lif->state); 3168 set_bit(IONIC_LIF_F_TX_DIM_INTR, lif->state); 3169 3170 snprintf(lif->name, sizeof(lif->name), "lif%u", lif->index); 3171 3172 mutex_init(&lif->queue_lock); 3173 mutex_init(&lif->config_lock); 3174 3175 spin_lock_init(&lif->adminq_lock); 3176 3177 spin_lock_init(&lif->deferred.lock); 3178 INIT_LIST_HEAD(&lif->deferred.list); 3179 INIT_WORK(&lif->deferred.work, ionic_lif_deferred_work); 3180 3181 /* allocate lif info */ 3182 lif->info_sz = ALIGN(sizeof(*lif->info), PAGE_SIZE); 3183 lif->info = dma_alloc_coherent(dev, lif->info_sz, 3184 &lif->info_pa, GFP_KERNEL); 3185 if (!lif->info) { 3186 dev_err(dev, "Failed to allocate lif info, aborting\n"); 3187 err = -ENOMEM; 3188 goto err_out_free_mutex; 3189 } 3190 3191 ionic_debugfs_add_lif(lif); 3192 3193 /* allocate control queues and txrx queue arrays */ 3194 ionic_lif_queue_identify(lif); 3195 err = ionic_qcqs_alloc(lif); 3196 if (err) 3197 goto err_out_free_lif_info; 3198 3199 /* allocate rss indirection table */ 3200 tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz); 3201 lif->rss_ind_tbl_sz = sizeof(*lif->rss_ind_tbl) * tbl_sz; 3202 lif->rss_ind_tbl = dma_alloc_coherent(dev, lif->rss_ind_tbl_sz, 3203 &lif->rss_ind_tbl_pa, 3204 GFP_KERNEL); 3205 3206 if (!lif->rss_ind_tbl) { 3207 err = -ENOMEM; 3208 dev_err(dev, "Failed to allocate rss indirection table, aborting\n"); 3209 goto err_out_free_qcqs; 3210 } 3211 netdev_rss_key_fill(lif->rss_hash_key, IONIC_RSS_HASH_KEY_SIZE); 3212 3213 ionic_lif_alloc_phc(lif); 3214 3215 return 0; 3216 3217 err_out_free_qcqs: 3218 ionic_qcqs_free(lif); 3219 err_out_free_lif_info: 3220 dma_free_coherent(dev, lif->info_sz, lif->info, lif->info_pa); 3221 lif->info = NULL; 3222 lif->info_pa = 0; 3223 err_out_free_mutex: 3224 mutex_destroy(&lif->config_lock); 3225 mutex_destroy(&lif->queue_lock); 3226 err_out_free_netdev: 3227 free_netdev(lif->netdev); 3228 lif = NULL; 3229 err_out_free_lid: 3230 kfree(lid); 3231 3232 return err; 3233 } 3234 3235 static void ionic_lif_reset(struct ionic_lif *lif) 3236 { 3237 struct ionic_dev *idev = &lif->ionic->idev; 3238 3239 if (!ionic_is_fw_running(idev)) 3240 return; 3241 3242 mutex_lock(&lif->ionic->dev_cmd_lock); 3243 ionic_dev_cmd_lif_reset(idev, lif->index); 3244 ionic_dev_cmd_wait(lif->ionic, DEVCMD_TIMEOUT); 3245 mutex_unlock(&lif->ionic->dev_cmd_lock); 3246 } 3247 3248 static void ionic_lif_handle_fw_down(struct ionic_lif *lif) 3249 { 3250 struct ionic *ionic = lif->ionic; 3251 3252 if (test_and_set_bit(IONIC_LIF_F_FW_RESET, lif->state)) 3253 return; 3254 3255 dev_info(ionic->dev, "FW Down: Stopping LIFs\n"); 3256 3257 netif_device_detach(lif->netdev); 3258 3259 mutex_lock(&lif->queue_lock); 3260 if (test_bit(IONIC_LIF_F_UP, lif->state)) { 3261 dev_info(ionic->dev, "Surprise FW stop, stopping queues\n"); 3262 ionic_stop_queues(lif); 3263 } 3264 3265 if (netif_running(lif->netdev)) { 3266 ionic_txrx_deinit(lif); 3267 ionic_txrx_free(lif); 3268 } 3269 ionic_lif_deinit(lif); 3270 ionic_reset(ionic); 3271 ionic_qcqs_free(lif); 3272 3273 mutex_unlock(&lif->queue_lock); 3274 3275 clear_bit(IONIC_LIF_F_FW_STOPPING, lif->state); 3276 dev_info(ionic->dev, "FW Down: LIFs stopped\n"); 3277 } 3278 3279 int ionic_restart_lif(struct ionic_lif *lif) 3280 { 3281 struct ionic *ionic = lif->ionic; 3282 int err; 3283 3284 mutex_lock(&lif->queue_lock); 3285 3286 if (test_and_clear_bit(IONIC_LIF_F_BROKEN, lif->state)) 3287 dev_info(ionic->dev, "FW Up: clearing broken state\n"); 3288 3289 err = ionic_qcqs_alloc(lif); 3290 if (err) 3291 goto err_unlock; 3292 3293 err = ionic_lif_init(lif); 3294 if (err) 3295 goto err_qcqs_free; 3296 3297 ionic_vf_attr_replay(lif); 3298 3299 if (lif->registered) 3300 ionic_lif_set_netdev_info(lif); 3301 3302 ionic_rx_filter_replay(lif); 3303 3304 if (netif_running(lif->netdev)) { 3305 err = ionic_txrx_alloc(lif); 3306 if (err) 3307 goto err_lifs_deinit; 3308 3309 err = ionic_txrx_init(lif); 3310 if (err) 3311 goto err_txrx_free; 3312 } 3313 3314 mutex_unlock(&lif->queue_lock); 3315 3316 clear_bit(IONIC_LIF_F_FW_RESET, lif->state); 3317 ionic_link_status_check_request(lif, CAN_SLEEP); 3318 netif_device_attach(lif->netdev); 3319 3320 return 0; 3321 3322 err_txrx_free: 3323 ionic_txrx_free(lif); 3324 err_lifs_deinit: 3325 ionic_lif_deinit(lif); 3326 err_qcqs_free: 3327 ionic_qcqs_free(lif); 3328 err_unlock: 3329 mutex_unlock(&lif->queue_lock); 3330 3331 return err; 3332 } 3333 3334 static void ionic_lif_handle_fw_up(struct ionic_lif *lif) 3335 { 3336 struct ionic *ionic = lif->ionic; 3337 int err; 3338 3339 if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state)) 3340 return; 3341 3342 dev_info(ionic->dev, "FW Up: restarting LIFs\n"); 3343 3344 /* This is a little different from what happens at 3345 * probe time because the LIF already exists so we 3346 * just need to reanimate it. 3347 */ 3348 ionic_init_devinfo(ionic); 3349 err = ionic_identify(ionic); 3350 if (err) 3351 goto err_out; 3352 err = ionic_port_identify(ionic); 3353 if (err) 3354 goto err_out; 3355 err = ionic_port_init(ionic); 3356 if (err) 3357 goto err_out; 3358 3359 err = ionic_restart_lif(lif); 3360 if (err) 3361 goto err_out; 3362 3363 dev_info(ionic->dev, "FW Up: LIFs restarted\n"); 3364 3365 /* restore the hardware timestamping queues */ 3366 ionic_lif_hwstamp_replay(lif); 3367 3368 return; 3369 3370 err_out: 3371 dev_err(ionic->dev, "FW Up: LIFs restart failed - err %d\n", err); 3372 } 3373 3374 void ionic_lif_free(struct ionic_lif *lif) 3375 { 3376 struct device *dev = lif->ionic->dev; 3377 3378 ionic_lif_free_phc(lif); 3379 3380 /* free rss indirection table */ 3381 dma_free_coherent(dev, lif->rss_ind_tbl_sz, lif->rss_ind_tbl, 3382 lif->rss_ind_tbl_pa); 3383 lif->rss_ind_tbl = NULL; 3384 lif->rss_ind_tbl_pa = 0; 3385 3386 /* free queues */ 3387 ionic_qcqs_free(lif); 3388 if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state)) 3389 ionic_lif_reset(lif); 3390 3391 /* free lif info */ 3392 kfree(lif->identity); 3393 dma_free_coherent(dev, lif->info_sz, lif->info, lif->info_pa); 3394 lif->info = NULL; 3395 lif->info_pa = 0; 3396 3397 /* unmap doorbell page */ 3398 ionic_bus_unmap_dbpage(lif->ionic, lif->kern_dbpage); 3399 lif->kern_dbpage = NULL; 3400 3401 mutex_destroy(&lif->config_lock); 3402 mutex_destroy(&lif->queue_lock); 3403 3404 /* free netdev & lif */ 3405 ionic_debugfs_del_lif(lif); 3406 free_netdev(lif->netdev); 3407 } 3408 3409 void ionic_lif_deinit(struct ionic_lif *lif) 3410 { 3411 if (!test_and_clear_bit(IONIC_LIF_F_INITED, lif->state)) 3412 return; 3413 3414 if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state)) { 3415 cancel_work_sync(&lif->deferred.work); 3416 cancel_work_sync(&lif->tx_timeout_work); 3417 ionic_rx_filters_deinit(lif); 3418 if (lif->netdev->features & NETIF_F_RXHASH) 3419 ionic_lif_rss_deinit(lif); 3420 } 3421 3422 napi_disable(&lif->adminqcq->napi); 3423 ionic_lif_qcq_deinit(lif, lif->notifyqcq); 3424 ionic_lif_qcq_deinit(lif, lif->adminqcq); 3425 3426 ionic_lif_reset(lif); 3427 } 3428 3429 static int ionic_lif_adminq_init(struct ionic_lif *lif) 3430 { 3431 struct device *dev = lif->ionic->dev; 3432 struct ionic_q_init_comp comp; 3433 struct ionic_dev *idev; 3434 struct ionic_qcq *qcq; 3435 struct ionic_queue *q; 3436 int err; 3437 3438 idev = &lif->ionic->idev; 3439 qcq = lif->adminqcq; 3440 q = &qcq->q; 3441 3442 mutex_lock(&lif->ionic->dev_cmd_lock); 3443 ionic_dev_cmd_adminq_init(idev, qcq, lif->index, qcq->intr.index); 3444 err = ionic_dev_cmd_wait(lif->ionic, DEVCMD_TIMEOUT); 3445 ionic_dev_cmd_comp(idev, (union ionic_dev_cmd_comp *)&comp); 3446 mutex_unlock(&lif->ionic->dev_cmd_lock); 3447 if (err) { 3448 netdev_err(lif->netdev, "adminq init failed %d\n", err); 3449 return err; 3450 } 3451 3452 q->hw_type = comp.hw_type; 3453 q->hw_index = le32_to_cpu(comp.hw_index); 3454 q->dbval = IONIC_DBELL_QID(q->hw_index); 3455 3456 dev_dbg(dev, "adminq->hw_type %d\n", q->hw_type); 3457 dev_dbg(dev, "adminq->hw_index %d\n", q->hw_index); 3458 3459 q->dbell_deadline = IONIC_ADMIN_DOORBELL_DEADLINE; 3460 q->dbell_jiffies = jiffies; 3461 3462 netif_napi_add(lif->netdev, &qcq->napi, ionic_adminq_napi); 3463 3464 qcq->napi_qcq = qcq; 3465 timer_setup(&qcq->napi_deadline, ionic_napi_deadline, 0); 3466 3467 napi_enable(&qcq->napi); 3468 3469 if (qcq->flags & IONIC_QCQ_F_INTR) { 3470 irq_set_affinity_hint(qcq->intr.vector, 3471 &qcq->intr.affinity_mask); 3472 ionic_intr_mask(idev->intr_ctrl, qcq->intr.index, 3473 IONIC_INTR_MASK_CLEAR); 3474 } 3475 3476 qcq->flags |= IONIC_QCQ_F_INITED; 3477 3478 return 0; 3479 } 3480 3481 static int ionic_lif_notifyq_init(struct ionic_lif *lif) 3482 { 3483 struct ionic_qcq *qcq = lif->notifyqcq; 3484 struct device *dev = lif->ionic->dev; 3485 struct ionic_queue *q = &qcq->q; 3486 int err; 3487 3488 struct ionic_admin_ctx ctx = { 3489 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 3490 .cmd.q_init = { 3491 .opcode = IONIC_CMD_Q_INIT, 3492 .lif_index = cpu_to_le16(lif->index), 3493 .type = q->type, 3494 .ver = lif->qtype_info[q->type].version, 3495 .index = cpu_to_le32(q->index), 3496 .flags = cpu_to_le16(IONIC_QINIT_F_IRQ | 3497 IONIC_QINIT_F_ENA), 3498 .intr_index = cpu_to_le16(lif->adminqcq->intr.index), 3499 .pid = cpu_to_le16(q->pid), 3500 .ring_size = ilog2(q->num_descs), 3501 .ring_base = cpu_to_le64(q->base_pa), 3502 } 3503 }; 3504 3505 dev_dbg(dev, "notifyq_init.pid %d\n", ctx.cmd.q_init.pid); 3506 dev_dbg(dev, "notifyq_init.index %d\n", ctx.cmd.q_init.index); 3507 dev_dbg(dev, "notifyq_init.ring_base 0x%llx\n", ctx.cmd.q_init.ring_base); 3508 dev_dbg(dev, "notifyq_init.ring_size %d\n", ctx.cmd.q_init.ring_size); 3509 3510 err = ionic_adminq_post_wait(lif, &ctx); 3511 if (err) 3512 return err; 3513 3514 lif->last_eid = 0; 3515 q->hw_type = ctx.comp.q_init.hw_type; 3516 q->hw_index = le32_to_cpu(ctx.comp.q_init.hw_index); 3517 q->dbval = IONIC_DBELL_QID(q->hw_index); 3518 3519 dev_dbg(dev, "notifyq->hw_type %d\n", q->hw_type); 3520 dev_dbg(dev, "notifyq->hw_index %d\n", q->hw_index); 3521 3522 /* preset the callback info */ 3523 q->info[0].cb_arg = lif; 3524 3525 qcq->flags |= IONIC_QCQ_F_INITED; 3526 3527 return 0; 3528 } 3529 3530 static int ionic_station_set(struct ionic_lif *lif) 3531 { 3532 struct net_device *netdev = lif->netdev; 3533 struct ionic_admin_ctx ctx = { 3534 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 3535 .cmd.lif_getattr = { 3536 .opcode = IONIC_CMD_LIF_GETATTR, 3537 .index = cpu_to_le16(lif->index), 3538 .attr = IONIC_LIF_ATTR_MAC, 3539 }, 3540 }; 3541 u8 mac_address[ETH_ALEN]; 3542 struct sockaddr addr; 3543 int err; 3544 3545 err = ionic_adminq_post_wait(lif, &ctx); 3546 if (err) 3547 return err; 3548 netdev_dbg(lif->netdev, "found initial MAC addr %pM\n", 3549 ctx.comp.lif_getattr.mac); 3550 ether_addr_copy(mac_address, ctx.comp.lif_getattr.mac); 3551 3552 if (is_zero_ether_addr(mac_address)) { 3553 eth_hw_addr_random(netdev); 3554 netdev_dbg(netdev, "Random Mac generated: %pM\n", netdev->dev_addr); 3555 ether_addr_copy(mac_address, netdev->dev_addr); 3556 3557 err = ionic_program_mac(lif, mac_address); 3558 if (err < 0) 3559 return err; 3560 3561 if (err > 0) { 3562 netdev_dbg(netdev, "%s:SET/GET ATTR Mac are not same-due to old FW running\n", 3563 __func__); 3564 return 0; 3565 } 3566 } 3567 3568 if (!is_zero_ether_addr(netdev->dev_addr)) { 3569 /* If the netdev mac is non-zero and doesn't match the default 3570 * device address, it was set by something earlier and we're 3571 * likely here again after a fw-upgrade reset. We need to be 3572 * sure the netdev mac is in our filter list. 3573 */ 3574 if (!ether_addr_equal(mac_address, netdev->dev_addr)) 3575 ionic_lif_addr_add(lif, netdev->dev_addr); 3576 } else { 3577 /* Update the netdev mac with the device's mac */ 3578 ether_addr_copy(addr.sa_data, mac_address); 3579 addr.sa_family = AF_INET; 3580 err = eth_prepare_mac_addr_change(netdev, &addr); 3581 if (err) { 3582 netdev_warn(lif->netdev, "ignoring bad MAC addr from NIC %pM - err %d\n", 3583 addr.sa_data, err); 3584 return 0; 3585 } 3586 3587 eth_commit_mac_addr_change(netdev, &addr); 3588 } 3589 3590 netdev_dbg(lif->netdev, "adding station MAC addr %pM\n", 3591 netdev->dev_addr); 3592 ionic_lif_addr_add(lif, netdev->dev_addr); 3593 3594 return 0; 3595 } 3596 3597 int ionic_lif_init(struct ionic_lif *lif) 3598 { 3599 struct ionic_dev *idev = &lif->ionic->idev; 3600 struct device *dev = lif->ionic->dev; 3601 struct ionic_lif_init_comp comp; 3602 int dbpage_num; 3603 int err; 3604 3605 mutex_lock(&lif->ionic->dev_cmd_lock); 3606 ionic_dev_cmd_lif_init(idev, lif->index, lif->info_pa); 3607 err = ionic_dev_cmd_wait(lif->ionic, DEVCMD_TIMEOUT); 3608 ionic_dev_cmd_comp(idev, (union ionic_dev_cmd_comp *)&comp); 3609 mutex_unlock(&lif->ionic->dev_cmd_lock); 3610 if (err) 3611 return err; 3612 3613 lif->hw_index = le16_to_cpu(comp.hw_index); 3614 3615 /* now that we have the hw_index we can figure out our doorbell page */ 3616 lif->dbid_count = le32_to_cpu(lif->ionic->ident.dev.ndbpgs_per_lif); 3617 if (!lif->dbid_count) { 3618 dev_err(dev, "No doorbell pages, aborting\n"); 3619 return -EINVAL; 3620 } 3621 3622 lif->kern_pid = 0; 3623 dbpage_num = ionic_db_page_num(lif, lif->kern_pid); 3624 lif->kern_dbpage = ionic_bus_map_dbpage(lif->ionic, dbpage_num); 3625 if (!lif->kern_dbpage) { 3626 dev_err(dev, "Cannot map dbpage, aborting\n"); 3627 return -ENOMEM; 3628 } 3629 3630 err = ionic_lif_adminq_init(lif); 3631 if (err) 3632 goto err_out_adminq_deinit; 3633 3634 if (lif->ionic->nnqs_per_lif) { 3635 err = ionic_lif_notifyq_init(lif); 3636 if (err) 3637 goto err_out_notifyq_deinit; 3638 } 3639 3640 err = ionic_init_nic_features(lif); 3641 if (err) 3642 goto err_out_notifyq_deinit; 3643 3644 if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state)) { 3645 err = ionic_rx_filters_init(lif); 3646 if (err) 3647 goto err_out_notifyq_deinit; 3648 } 3649 3650 err = ionic_station_set(lif); 3651 if (err) 3652 goto err_out_notifyq_deinit; 3653 3654 lif->rx_copybreak = IONIC_RX_COPYBREAK_DEFAULT; 3655 3656 set_bit(IONIC_LIF_F_INITED, lif->state); 3657 3658 INIT_WORK(&lif->tx_timeout_work, ionic_tx_timeout_work); 3659 3660 return 0; 3661 3662 err_out_notifyq_deinit: 3663 napi_disable(&lif->adminqcq->napi); 3664 ionic_lif_qcq_deinit(lif, lif->notifyqcq); 3665 err_out_adminq_deinit: 3666 ionic_lif_qcq_deinit(lif, lif->adminqcq); 3667 ionic_lif_reset(lif); 3668 ionic_bus_unmap_dbpage(lif->ionic, lif->kern_dbpage); 3669 lif->kern_dbpage = NULL; 3670 3671 return err; 3672 } 3673 3674 static void ionic_lif_notify_work(struct work_struct *ws) 3675 { 3676 } 3677 3678 static void ionic_lif_set_netdev_info(struct ionic_lif *lif) 3679 { 3680 struct ionic_admin_ctx ctx = { 3681 .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), 3682 .cmd.lif_setattr = { 3683 .opcode = IONIC_CMD_LIF_SETATTR, 3684 .index = cpu_to_le16(lif->index), 3685 .attr = IONIC_LIF_ATTR_NAME, 3686 }, 3687 }; 3688 3689 strscpy(ctx.cmd.lif_setattr.name, lif->netdev->name, 3690 sizeof(ctx.cmd.lif_setattr.name)); 3691 3692 ionic_adminq_post_wait(lif, &ctx); 3693 } 3694 3695 static struct ionic_lif *ionic_netdev_lif(struct net_device *netdev) 3696 { 3697 if (!netdev || netdev->netdev_ops->ndo_start_xmit != ionic_start_xmit) 3698 return NULL; 3699 3700 return netdev_priv(netdev); 3701 } 3702 3703 static int ionic_lif_notify(struct notifier_block *nb, 3704 unsigned long event, void *info) 3705 { 3706 struct net_device *ndev = netdev_notifier_info_to_dev(info); 3707 struct ionic *ionic = container_of(nb, struct ionic, nb); 3708 struct ionic_lif *lif = ionic_netdev_lif(ndev); 3709 3710 if (!lif || lif->ionic != ionic) 3711 return NOTIFY_DONE; 3712 3713 switch (event) { 3714 case NETDEV_CHANGENAME: 3715 ionic_lif_set_netdev_info(lif); 3716 break; 3717 } 3718 3719 return NOTIFY_DONE; 3720 } 3721 3722 int ionic_lif_register(struct ionic_lif *lif) 3723 { 3724 int err; 3725 3726 ionic_lif_register_phc(lif); 3727 3728 INIT_WORK(&lif->ionic->nb_work, ionic_lif_notify_work); 3729 3730 lif->ionic->nb.notifier_call = ionic_lif_notify; 3731 3732 err = register_netdevice_notifier(&lif->ionic->nb); 3733 if (err) 3734 lif->ionic->nb.notifier_call = NULL; 3735 3736 /* only register LIF0 for now */ 3737 err = register_netdev(lif->netdev); 3738 if (err) { 3739 dev_err(lif->ionic->dev, "Cannot register net device, aborting\n"); 3740 ionic_lif_unregister_phc(lif); 3741 return err; 3742 } 3743 3744 ionic_link_status_check_request(lif, CAN_SLEEP); 3745 lif->registered = true; 3746 ionic_lif_set_netdev_info(lif); 3747 3748 return 0; 3749 } 3750 3751 void ionic_lif_unregister(struct ionic_lif *lif) 3752 { 3753 if (lif->ionic->nb.notifier_call) { 3754 unregister_netdevice_notifier(&lif->ionic->nb); 3755 cancel_work_sync(&lif->ionic->nb_work); 3756 lif->ionic->nb.notifier_call = NULL; 3757 } 3758 3759 if (lif->netdev->reg_state == NETREG_REGISTERED) 3760 unregister_netdev(lif->netdev); 3761 3762 ionic_lif_unregister_phc(lif); 3763 3764 lif->registered = false; 3765 } 3766 3767 static void ionic_lif_queue_identify(struct ionic_lif *lif) 3768 { 3769 union ionic_q_identity __iomem *q_ident; 3770 struct ionic *ionic = lif->ionic; 3771 struct ionic_dev *idev; 3772 int qtype; 3773 int err; 3774 3775 idev = &lif->ionic->idev; 3776 q_ident = (union ionic_q_identity __iomem *)&idev->dev_cmd_regs->data; 3777 3778 for (qtype = 0; qtype < ARRAY_SIZE(ionic_qtype_versions); qtype++) { 3779 struct ionic_qtype_info *qti = &lif->qtype_info[qtype]; 3780 3781 /* filter out the ones we know about */ 3782 switch (qtype) { 3783 case IONIC_QTYPE_ADMINQ: 3784 case IONIC_QTYPE_NOTIFYQ: 3785 case IONIC_QTYPE_RXQ: 3786 case IONIC_QTYPE_TXQ: 3787 break; 3788 default: 3789 continue; 3790 } 3791 3792 memset(qti, 0, sizeof(*qti)); 3793 3794 mutex_lock(&ionic->dev_cmd_lock); 3795 ionic_dev_cmd_queue_identify(idev, lif->lif_type, qtype, 3796 ionic_qtype_versions[qtype]); 3797 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 3798 if (!err) { 3799 qti->version = readb(&q_ident->version); 3800 qti->supported = readb(&q_ident->supported); 3801 qti->features = readq(&q_ident->features); 3802 qti->desc_sz = readw(&q_ident->desc_sz); 3803 qti->comp_sz = readw(&q_ident->comp_sz); 3804 qti->sg_desc_sz = readw(&q_ident->sg_desc_sz); 3805 qti->max_sg_elems = readw(&q_ident->max_sg_elems); 3806 qti->sg_desc_stride = readw(&q_ident->sg_desc_stride); 3807 } 3808 mutex_unlock(&ionic->dev_cmd_lock); 3809 3810 if (err == -EINVAL) { 3811 dev_err(ionic->dev, "qtype %d not supported\n", qtype); 3812 continue; 3813 } else if (err == -EIO) { 3814 dev_err(ionic->dev, "q_ident failed, not supported on older FW\n"); 3815 return; 3816 } else if (err) { 3817 dev_err(ionic->dev, "q_ident failed, qtype %d: %d\n", 3818 qtype, err); 3819 return; 3820 } 3821 3822 dev_dbg(ionic->dev, " qtype[%d].version = %d\n", 3823 qtype, qti->version); 3824 dev_dbg(ionic->dev, " qtype[%d].supported = 0x%02x\n", 3825 qtype, qti->supported); 3826 dev_dbg(ionic->dev, " qtype[%d].features = 0x%04llx\n", 3827 qtype, qti->features); 3828 dev_dbg(ionic->dev, " qtype[%d].desc_sz = %d\n", 3829 qtype, qti->desc_sz); 3830 dev_dbg(ionic->dev, " qtype[%d].comp_sz = %d\n", 3831 qtype, qti->comp_sz); 3832 dev_dbg(ionic->dev, " qtype[%d].sg_desc_sz = %d\n", 3833 qtype, qti->sg_desc_sz); 3834 dev_dbg(ionic->dev, " qtype[%d].max_sg_elems = %d\n", 3835 qtype, qti->max_sg_elems); 3836 dev_dbg(ionic->dev, " qtype[%d].sg_desc_stride = %d\n", 3837 qtype, qti->sg_desc_stride); 3838 } 3839 } 3840 3841 int ionic_lif_identify(struct ionic *ionic, u8 lif_type, 3842 union ionic_lif_identity *lid) 3843 { 3844 struct ionic_dev *idev = &ionic->idev; 3845 size_t sz; 3846 int err; 3847 3848 sz = min(sizeof(*lid), sizeof(idev->dev_cmd_regs->data)); 3849 3850 mutex_lock(&ionic->dev_cmd_lock); 3851 ionic_dev_cmd_lif_identify(idev, lif_type, IONIC_IDENTITY_VERSION_1); 3852 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 3853 memcpy_fromio(lid, &idev->dev_cmd_regs->data, sz); 3854 mutex_unlock(&ionic->dev_cmd_lock); 3855 if (err) 3856 return (err); 3857 3858 dev_dbg(ionic->dev, "capabilities 0x%llx\n", 3859 le64_to_cpu(lid->capabilities)); 3860 3861 dev_dbg(ionic->dev, "eth.max_ucast_filters %d\n", 3862 le32_to_cpu(lid->eth.max_ucast_filters)); 3863 dev_dbg(ionic->dev, "eth.max_mcast_filters %d\n", 3864 le32_to_cpu(lid->eth.max_mcast_filters)); 3865 dev_dbg(ionic->dev, "eth.features 0x%llx\n", 3866 le64_to_cpu(lid->eth.config.features)); 3867 dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_ADMINQ] %d\n", 3868 le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_ADMINQ])); 3869 dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_NOTIFYQ] %d\n", 3870 le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_NOTIFYQ])); 3871 dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_RXQ] %d\n", 3872 le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_RXQ])); 3873 dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_TXQ] %d\n", 3874 le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_TXQ])); 3875 dev_dbg(ionic->dev, "eth.config.name %s\n", lid->eth.config.name); 3876 dev_dbg(ionic->dev, "eth.config.mac %pM\n", lid->eth.config.mac); 3877 dev_dbg(ionic->dev, "eth.config.mtu %d\n", 3878 le32_to_cpu(lid->eth.config.mtu)); 3879 3880 return 0; 3881 } 3882 3883 int ionic_lif_size(struct ionic *ionic) 3884 { 3885 struct ionic_identity *ident = &ionic->ident; 3886 unsigned int nintrs, dev_nintrs; 3887 union ionic_lif_config *lc; 3888 unsigned int ntxqs_per_lif; 3889 unsigned int nrxqs_per_lif; 3890 unsigned int neqs_per_lif; 3891 unsigned int nnqs_per_lif; 3892 unsigned int nxqs, neqs; 3893 unsigned int min_intrs; 3894 int err; 3895 3896 /* retrieve basic values from FW */ 3897 lc = &ident->lif.eth.config; 3898 dev_nintrs = le32_to_cpu(ident->dev.nintrs); 3899 neqs_per_lif = le32_to_cpu(ident->lif.rdma.eq_qtype.qid_count); 3900 nnqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_NOTIFYQ]); 3901 ntxqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_TXQ]); 3902 nrxqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_RXQ]); 3903 3904 /* limit values to play nice with kdump */ 3905 if (is_kdump_kernel()) { 3906 dev_nintrs = 2; 3907 neqs_per_lif = 0; 3908 nnqs_per_lif = 0; 3909 ntxqs_per_lif = 1; 3910 nrxqs_per_lif = 1; 3911 } 3912 3913 /* reserve last queue id for hardware timestamping */ 3914 if (lc->features & cpu_to_le64(IONIC_ETH_HW_TIMESTAMP)) { 3915 if (ntxqs_per_lif <= 1 || nrxqs_per_lif <= 1) { 3916 lc->features &= cpu_to_le64(~IONIC_ETH_HW_TIMESTAMP); 3917 } else { 3918 ntxqs_per_lif -= 1; 3919 nrxqs_per_lif -= 1; 3920 } 3921 } 3922 3923 nxqs = min(ntxqs_per_lif, nrxqs_per_lif); 3924 nxqs = min(nxqs, num_online_cpus()); 3925 neqs = min(neqs_per_lif, num_online_cpus()); 3926 3927 try_again: 3928 /* interrupt usage: 3929 * 1 for master lif adminq/notifyq 3930 * 1 for each CPU for master lif TxRx queue pairs 3931 * whatever's left is for RDMA queues 3932 */ 3933 nintrs = 1 + nxqs + neqs; 3934 min_intrs = 2; /* adminq + 1 TxRx queue pair */ 3935 3936 if (nintrs > dev_nintrs) 3937 goto try_fewer; 3938 3939 err = ionic_bus_alloc_irq_vectors(ionic, nintrs); 3940 if (err < 0 && err != -ENOSPC) { 3941 dev_err(ionic->dev, "Can't get intrs from OS: %d\n", err); 3942 return err; 3943 } 3944 if (err == -ENOSPC) 3945 goto try_fewer; 3946 3947 if (err != nintrs) { 3948 ionic_bus_free_irq_vectors(ionic); 3949 goto try_fewer; 3950 } 3951 3952 ionic->nnqs_per_lif = nnqs_per_lif; 3953 ionic->neqs_per_lif = neqs; 3954 ionic->ntxqs_per_lif = nxqs; 3955 ionic->nrxqs_per_lif = nxqs; 3956 ionic->nintrs = nintrs; 3957 3958 ionic_debugfs_add_sizes(ionic); 3959 3960 return 0; 3961 3962 try_fewer: 3963 if (nnqs_per_lif > 1) { 3964 nnqs_per_lif >>= 1; 3965 goto try_again; 3966 } 3967 if (neqs > 1) { 3968 neqs >>= 1; 3969 goto try_again; 3970 } 3971 if (nxqs > 1) { 3972 nxqs >>= 1; 3973 goto try_again; 3974 } 3975 dev_err(ionic->dev, "Can't get minimum %d intrs from OS\n", min_intrs); 3976 return -ENOSPC; 3977 } 3978