1 /********************************************************************** 2 * Author: Cavium, Inc. 3 * 4 * Contact: support@cavium.com 5 * Please include "LiquidIO" in the subject. 6 * 7 * Copyright (c) 2003-2016 Cavium, Inc. 8 * 9 * This file is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License, Version 2, as 11 * published by the Free Software Foundation. 12 * 13 * This file is distributed in the hope that it will be useful, but 14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty 15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or 16 * NONINFRINGEMENT. See the GNU General Public License for more details. 17 ***********************************************************************/ 18 #include <linux/module.h> 19 #include <linux/interrupt.h> 20 #include <linux/pci.h> 21 #include <linux/firmware.h> 22 #include <net/vxlan.h> 23 #include <linux/kthread.h> 24 #include "liquidio_common.h" 25 #include "octeon_droq.h" 26 #include "octeon_iq.h" 27 #include "response_manager.h" 28 #include "octeon_device.h" 29 #include "octeon_nic.h" 30 #include "octeon_main.h" 31 #include "octeon_network.h" 32 #include "cn66xx_regs.h" 33 #include "cn66xx_device.h" 34 #include "cn68xx_device.h" 35 #include "cn23xx_pf_device.h" 36 #include "liquidio_image.h" 37 #include "lio_vf_rep.h" 38 39 MODULE_AUTHOR("Cavium Networks, <support@cavium.com>"); 40 MODULE_DESCRIPTION("Cavium LiquidIO Intelligent Server Adapter Driver"); 41 MODULE_LICENSE("GPL"); 42 MODULE_VERSION(LIQUIDIO_VERSION); 43 MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_210SV_NAME 44 "_" LIO_FW_NAME_TYPE_NIC LIO_FW_NAME_SUFFIX); 45 MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_210NV_NAME 46 "_" LIO_FW_NAME_TYPE_NIC LIO_FW_NAME_SUFFIX); 47 MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_410NV_NAME 48 "_" LIO_FW_NAME_TYPE_NIC LIO_FW_NAME_SUFFIX); 49 MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_23XX_NAME 50 "_" LIO_FW_NAME_TYPE_NIC LIO_FW_NAME_SUFFIX); 51 52 static int ddr_timeout = 10000; 53 module_param(ddr_timeout, int, 0644); 54 MODULE_PARM_DESC(ddr_timeout, 55 "Number of milliseconds to wait for DDR initialization. 0 waits for ddr_timeout to be set to non-zero value before starting to check"); 56 57 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK) 58 59 static int debug = -1; 60 module_param(debug, int, 0644); 61 MODULE_PARM_DESC(debug, "NETIF_MSG debug bits"); 62 63 static char fw_type[LIO_MAX_FW_TYPE_LEN] = LIO_FW_NAME_TYPE_AUTO; 64 module_param_string(fw_type, fw_type, sizeof(fw_type), 0444); 65 MODULE_PARM_DESC(fw_type, "Type of firmware to be loaded (default is \"auto\"), which uses firmware in flash, if present, else loads \"nic\"."); 66 67 static u32 console_bitmask; 68 module_param(console_bitmask, int, 0644); 69 MODULE_PARM_DESC(console_bitmask, 70 "Bitmask indicating which consoles have debug output redirected to syslog."); 71 72 /** 73 * \brief determines if a given console has debug enabled. 74 * @param console console to check 75 * @returns 1 = enabled. 0 otherwise 76 */ 77 static int octeon_console_debug_enabled(u32 console) 78 { 79 return (console_bitmask >> (console)) & 0x1; 80 } 81 82 /* Polling interval for determining when NIC application is alive */ 83 #define LIQUIDIO_STARTER_POLL_INTERVAL_MS 100 84 85 /* runtime link query interval */ 86 #define LIQUIDIO_LINK_QUERY_INTERVAL_MS 1000 87 /* update localtime to octeon firmware every 60 seconds. 88 * make firmware to use same time reference, so that it will be easy to 89 * correlate firmware logged events/errors with host events, for debugging. 90 */ 91 #define LIO_SYNC_OCTEON_TIME_INTERVAL_MS 60000 92 93 /* time to wait for possible in-flight requests in milliseconds */ 94 #define WAIT_INFLIGHT_REQUEST msecs_to_jiffies(1000) 95 96 struct lio_trusted_vf_ctx { 97 struct completion complete; 98 int status; 99 }; 100 101 struct oct_link_status_resp { 102 u64 rh; 103 struct oct_link_info link_info; 104 u64 status; 105 }; 106 107 struct oct_timestamp_resp { 108 u64 rh; 109 u64 timestamp; 110 u64 status; 111 }; 112 113 #define OCT_TIMESTAMP_RESP_SIZE (sizeof(struct oct_timestamp_resp)) 114 115 union tx_info { 116 u64 u64; 117 struct { 118 #ifdef __BIG_ENDIAN_BITFIELD 119 u16 gso_size; 120 u16 gso_segs; 121 u32 reserved; 122 #else 123 u32 reserved; 124 u16 gso_segs; 125 u16 gso_size; 126 #endif 127 } s; 128 }; 129 130 /** Octeon device properties to be used by the NIC module. 131 * Each octeon device in the system will be represented 132 * by this structure in the NIC module. 133 */ 134 135 #define OCTNIC_GSO_MAX_HEADER_SIZE 128 136 #define OCTNIC_GSO_MAX_SIZE \ 137 (CN23XX_DEFAULT_INPUT_JABBER - OCTNIC_GSO_MAX_HEADER_SIZE) 138 139 struct handshake { 140 struct completion init; 141 struct completion started; 142 struct pci_dev *pci_dev; 143 int init_ok; 144 int started_ok; 145 }; 146 147 #ifdef CONFIG_PCI_IOV 148 static int liquidio_enable_sriov(struct pci_dev *dev, int num_vfs); 149 #endif 150 151 static int octeon_dbg_console_print(struct octeon_device *oct, u32 console_num, 152 char *prefix, char *suffix); 153 154 static int octeon_device_init(struct octeon_device *); 155 static int liquidio_stop(struct net_device *netdev); 156 static void liquidio_remove(struct pci_dev *pdev); 157 static int liquidio_probe(struct pci_dev *pdev, 158 const struct pci_device_id *ent); 159 static int liquidio_set_vf_link_state(struct net_device *netdev, int vfidx, 160 int linkstate); 161 162 static struct handshake handshake[MAX_OCTEON_DEVICES]; 163 static struct completion first_stage; 164 165 static void octeon_droq_bh(unsigned long pdev) 166 { 167 int q_no; 168 int reschedule = 0; 169 struct octeon_device *oct = (struct octeon_device *)pdev; 170 struct octeon_device_priv *oct_priv = 171 (struct octeon_device_priv *)oct->priv; 172 173 for (q_no = 0; q_no < MAX_OCTEON_OUTPUT_QUEUES(oct); q_no++) { 174 if (!(oct->io_qmask.oq & BIT_ULL(q_no))) 175 continue; 176 reschedule |= octeon_droq_process_packets(oct, oct->droq[q_no], 177 MAX_PACKET_BUDGET); 178 lio_enable_irq(oct->droq[q_no], NULL); 179 180 if (OCTEON_CN23XX_PF(oct) && oct->msix_on) { 181 /* set time and cnt interrupt thresholds for this DROQ 182 * for NAPI 183 */ 184 int adjusted_q_no = q_no + oct->sriov_info.pf_srn; 185 186 octeon_write_csr64( 187 oct, CN23XX_SLI_OQ_PKT_INT_LEVELS(adjusted_q_no), 188 0x5700000040ULL); 189 octeon_write_csr64( 190 oct, CN23XX_SLI_OQ_PKTS_SENT(adjusted_q_no), 0); 191 } 192 } 193 194 if (reschedule) 195 tasklet_schedule(&oct_priv->droq_tasklet); 196 } 197 198 static int lio_wait_for_oq_pkts(struct octeon_device *oct) 199 { 200 struct octeon_device_priv *oct_priv = 201 (struct octeon_device_priv *)oct->priv; 202 int retry = 100, pkt_cnt = 0, pending_pkts = 0; 203 int i; 204 205 do { 206 pending_pkts = 0; 207 208 for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) { 209 if (!(oct->io_qmask.oq & BIT_ULL(i))) 210 continue; 211 pkt_cnt += octeon_droq_check_hw_for_pkts(oct->droq[i]); 212 } 213 if (pkt_cnt > 0) { 214 pending_pkts += pkt_cnt; 215 tasklet_schedule(&oct_priv->droq_tasklet); 216 } 217 pkt_cnt = 0; 218 schedule_timeout_uninterruptible(1); 219 220 } while (retry-- && pending_pkts); 221 222 return pkt_cnt; 223 } 224 225 /** 226 * \brief Forces all IO queues off on a given device 227 * @param oct Pointer to Octeon device 228 */ 229 static void force_io_queues_off(struct octeon_device *oct) 230 { 231 if ((oct->chip_id == OCTEON_CN66XX) || 232 (oct->chip_id == OCTEON_CN68XX)) { 233 /* Reset the Enable bits for Input Queues. */ 234 octeon_write_csr(oct, CN6XXX_SLI_PKT_INSTR_ENB, 0); 235 236 /* Reset the Enable bits for Output Queues. */ 237 octeon_write_csr(oct, CN6XXX_SLI_PKT_OUT_ENB, 0); 238 } 239 } 240 241 /** 242 * \brief Cause device to go quiet so it can be safely removed/reset/etc 243 * @param oct Pointer to Octeon device 244 */ 245 static inline void pcierror_quiesce_device(struct octeon_device *oct) 246 { 247 int i; 248 249 /* Disable the input and output queues now. No more packets will 250 * arrive from Octeon, but we should wait for all packet processing 251 * to finish. 252 */ 253 force_io_queues_off(oct); 254 255 /* To allow for in-flight requests */ 256 schedule_timeout_uninterruptible(WAIT_INFLIGHT_REQUEST); 257 258 if (wait_for_pending_requests(oct)) 259 dev_err(&oct->pci_dev->dev, "There were pending requests\n"); 260 261 /* Force all requests waiting to be fetched by OCTEON to complete. */ 262 for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) { 263 struct octeon_instr_queue *iq; 264 265 if (!(oct->io_qmask.iq & BIT_ULL(i))) 266 continue; 267 iq = oct->instr_queue[i]; 268 269 if (atomic_read(&iq->instr_pending)) { 270 spin_lock_bh(&iq->lock); 271 iq->fill_cnt = 0; 272 iq->octeon_read_index = iq->host_write_index; 273 iq->stats.instr_processed += 274 atomic_read(&iq->instr_pending); 275 lio_process_iq_request_list(oct, iq, 0); 276 spin_unlock_bh(&iq->lock); 277 } 278 } 279 280 /* Force all pending ordered list requests to time out. */ 281 lio_process_ordered_list(oct, 1); 282 283 /* We do not need to wait for output queue packets to be processed. */ 284 } 285 286 /** 287 * \brief Cleanup PCI AER uncorrectable error status 288 * @param dev Pointer to PCI device 289 */ 290 static void cleanup_aer_uncorrect_error_status(struct pci_dev *dev) 291 { 292 int pos = 0x100; 293 u32 status, mask; 294 295 pr_info("%s :\n", __func__); 296 297 pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status); 298 pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask); 299 if (dev->error_state == pci_channel_io_normal) 300 status &= ~mask; /* Clear corresponding nonfatal bits */ 301 else 302 status &= mask; /* Clear corresponding fatal bits */ 303 pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status); 304 } 305 306 /** 307 * \brief Stop all PCI IO to a given device 308 * @param dev Pointer to Octeon device 309 */ 310 static void stop_pci_io(struct octeon_device *oct) 311 { 312 /* No more instructions will be forwarded. */ 313 atomic_set(&oct->status, OCT_DEV_IN_RESET); 314 315 pci_disable_device(oct->pci_dev); 316 317 /* Disable interrupts */ 318 oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR); 319 320 pcierror_quiesce_device(oct); 321 322 /* Release the interrupt line */ 323 free_irq(oct->pci_dev->irq, oct); 324 325 if (oct->flags & LIO_FLAG_MSI_ENABLED) 326 pci_disable_msi(oct->pci_dev); 327 328 dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n", 329 lio_get_state_string(&oct->status)); 330 331 /* making it a common function for all OCTEON models */ 332 cleanup_aer_uncorrect_error_status(oct->pci_dev); 333 } 334 335 /** 336 * \brief called when PCI error is detected 337 * @param pdev Pointer to PCI device 338 * @param state The current pci connection state 339 * 340 * This function is called after a PCI bus error affecting 341 * this device has been detected. 342 */ 343 static pci_ers_result_t liquidio_pcie_error_detected(struct pci_dev *pdev, 344 pci_channel_state_t state) 345 { 346 struct octeon_device *oct = pci_get_drvdata(pdev); 347 348 /* Non-correctable Non-fatal errors */ 349 if (state == pci_channel_io_normal) { 350 dev_err(&oct->pci_dev->dev, "Non-correctable non-fatal error reported:\n"); 351 cleanup_aer_uncorrect_error_status(oct->pci_dev); 352 return PCI_ERS_RESULT_CAN_RECOVER; 353 } 354 355 /* Non-correctable Fatal errors */ 356 dev_err(&oct->pci_dev->dev, "Non-correctable FATAL reported by PCI AER driver\n"); 357 stop_pci_io(oct); 358 359 /* Always return a DISCONNECT. There is no support for recovery but only 360 * for a clean shutdown. 361 */ 362 return PCI_ERS_RESULT_DISCONNECT; 363 } 364 365 /** 366 * \brief mmio handler 367 * @param pdev Pointer to PCI device 368 */ 369 static pci_ers_result_t liquidio_pcie_mmio_enabled( 370 struct pci_dev *pdev __attribute__((unused))) 371 { 372 /* We should never hit this since we never ask for a reset for a Fatal 373 * Error. We always return DISCONNECT in io_error above. 374 * But play safe and return RECOVERED for now. 375 */ 376 return PCI_ERS_RESULT_RECOVERED; 377 } 378 379 /** 380 * \brief called after the pci bus has been reset. 381 * @param pdev Pointer to PCI device 382 * 383 * Restart the card from scratch, as if from a cold-boot. Implementation 384 * resembles the first-half of the octeon_resume routine. 385 */ 386 static pci_ers_result_t liquidio_pcie_slot_reset( 387 struct pci_dev *pdev __attribute__((unused))) 388 { 389 /* We should never hit this since we never ask for a reset for a Fatal 390 * Error. We always return DISCONNECT in io_error above. 391 * But play safe and return RECOVERED for now. 392 */ 393 return PCI_ERS_RESULT_RECOVERED; 394 } 395 396 /** 397 * \brief called when traffic can start flowing again. 398 * @param pdev Pointer to PCI device 399 * 400 * This callback is called when the error recovery driver tells us that 401 * its OK to resume normal operation. Implementation resembles the 402 * second-half of the octeon_resume routine. 403 */ 404 static void liquidio_pcie_resume(struct pci_dev *pdev __attribute__((unused))) 405 { 406 /* Nothing to be done here. */ 407 } 408 409 #ifdef CONFIG_PM 410 /** 411 * \brief called when suspending 412 * @param pdev Pointer to PCI device 413 * @param state state to suspend to 414 */ 415 static int liquidio_suspend(struct pci_dev *pdev __attribute__((unused)), 416 pm_message_t state __attribute__((unused))) 417 { 418 return 0; 419 } 420 421 /** 422 * \brief called when resuming 423 * @param pdev Pointer to PCI device 424 */ 425 static int liquidio_resume(struct pci_dev *pdev __attribute__((unused))) 426 { 427 return 0; 428 } 429 #endif 430 431 /* For PCI-E Advanced Error Recovery (AER) Interface */ 432 static const struct pci_error_handlers liquidio_err_handler = { 433 .error_detected = liquidio_pcie_error_detected, 434 .mmio_enabled = liquidio_pcie_mmio_enabled, 435 .slot_reset = liquidio_pcie_slot_reset, 436 .resume = liquidio_pcie_resume, 437 }; 438 439 static const struct pci_device_id liquidio_pci_tbl[] = { 440 { /* 68xx */ 441 PCI_VENDOR_ID_CAVIUM, 0x91, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 442 }, 443 { /* 66xx */ 444 PCI_VENDOR_ID_CAVIUM, 0x92, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 445 }, 446 { /* 23xx pf */ 447 PCI_VENDOR_ID_CAVIUM, 0x9702, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 448 }, 449 { 450 0, 0, 0, 0, 0, 0, 0 451 } 452 }; 453 MODULE_DEVICE_TABLE(pci, liquidio_pci_tbl); 454 455 static struct pci_driver liquidio_pci_driver = { 456 .name = "LiquidIO", 457 .id_table = liquidio_pci_tbl, 458 .probe = liquidio_probe, 459 .remove = liquidio_remove, 460 .err_handler = &liquidio_err_handler, /* For AER */ 461 462 #ifdef CONFIG_PM 463 .suspend = liquidio_suspend, 464 .resume = liquidio_resume, 465 #endif 466 #ifdef CONFIG_PCI_IOV 467 .sriov_configure = liquidio_enable_sriov, 468 #endif 469 }; 470 471 /** 472 * \brief register PCI driver 473 */ 474 static int liquidio_init_pci(void) 475 { 476 return pci_register_driver(&liquidio_pci_driver); 477 } 478 479 /** 480 * \brief unregister PCI driver 481 */ 482 static void liquidio_deinit_pci(void) 483 { 484 pci_unregister_driver(&liquidio_pci_driver); 485 } 486 487 /** 488 * \brief Check Tx queue status, and take appropriate action 489 * @param lio per-network private data 490 * @returns 0 if full, number of queues woken up otherwise 491 */ 492 static inline int check_txq_status(struct lio *lio) 493 { 494 int numqs = lio->netdev->real_num_tx_queues; 495 int ret_val = 0; 496 int q, iq; 497 498 /* check each sub-queue state */ 499 for (q = 0; q < numqs; q++) { 500 iq = lio->linfo.txpciq[q % 501 lio->oct_dev->num_iqs].s.q_no; 502 if (octnet_iq_is_full(lio->oct_dev, iq)) 503 continue; 504 if (__netif_subqueue_stopped(lio->netdev, q)) { 505 netif_wake_subqueue(lio->netdev, q); 506 INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev, iq, 507 tx_restart, 1); 508 ret_val++; 509 } 510 } 511 512 return ret_val; 513 } 514 515 /** 516 * \brief Print link information 517 * @param netdev network device 518 */ 519 static void print_link_info(struct net_device *netdev) 520 { 521 struct lio *lio = GET_LIO(netdev); 522 523 if (!ifstate_check(lio, LIO_IFSTATE_RESETTING) && 524 ifstate_check(lio, LIO_IFSTATE_REGISTERED)) { 525 struct oct_link_info *linfo = &lio->linfo; 526 527 if (linfo->link.s.link_up) { 528 netif_info(lio, link, lio->netdev, "%d Mbps %s Duplex UP\n", 529 linfo->link.s.speed, 530 (linfo->link.s.duplex) ? "Full" : "Half"); 531 } else { 532 netif_info(lio, link, lio->netdev, "Link Down\n"); 533 } 534 } 535 } 536 537 /** 538 * \brief Routine to notify MTU change 539 * @param work work_struct data structure 540 */ 541 static void octnet_link_status_change(struct work_struct *work) 542 { 543 struct cavium_wk *wk = (struct cavium_wk *)work; 544 struct lio *lio = (struct lio *)wk->ctxptr; 545 546 /* lio->linfo.link.s.mtu always contains max MTU of the lio interface. 547 * this API is invoked only when new max-MTU of the interface is 548 * less than current MTU. 549 */ 550 rtnl_lock(); 551 dev_set_mtu(lio->netdev, lio->linfo.link.s.mtu); 552 rtnl_unlock(); 553 } 554 555 /** 556 * \brief Sets up the mtu status change work 557 * @param netdev network device 558 */ 559 static inline int setup_link_status_change_wq(struct net_device *netdev) 560 { 561 struct lio *lio = GET_LIO(netdev); 562 struct octeon_device *oct = lio->oct_dev; 563 564 lio->link_status_wq.wq = alloc_workqueue("link-status", 565 WQ_MEM_RECLAIM, 0); 566 if (!lio->link_status_wq.wq) { 567 dev_err(&oct->pci_dev->dev, "unable to create cavium link status wq\n"); 568 return -1; 569 } 570 INIT_DELAYED_WORK(&lio->link_status_wq.wk.work, 571 octnet_link_status_change); 572 lio->link_status_wq.wk.ctxptr = lio; 573 574 return 0; 575 } 576 577 static inline void cleanup_link_status_change_wq(struct net_device *netdev) 578 { 579 struct lio *lio = GET_LIO(netdev); 580 581 if (lio->link_status_wq.wq) { 582 cancel_delayed_work_sync(&lio->link_status_wq.wk.work); 583 destroy_workqueue(lio->link_status_wq.wq); 584 } 585 } 586 587 /** 588 * \brief Update link status 589 * @param netdev network device 590 * @param ls link status structure 591 * 592 * Called on receipt of a link status response from the core application to 593 * update each interface's link status. 594 */ 595 static inline void update_link_status(struct net_device *netdev, 596 union oct_link_status *ls) 597 { 598 struct lio *lio = GET_LIO(netdev); 599 int changed = (lio->linfo.link.u64 != ls->u64); 600 int current_max_mtu = lio->linfo.link.s.mtu; 601 struct octeon_device *oct = lio->oct_dev; 602 603 dev_dbg(&oct->pci_dev->dev, "%s: lio->linfo.link.u64=%llx, ls->u64=%llx\n", 604 __func__, lio->linfo.link.u64, ls->u64); 605 lio->linfo.link.u64 = ls->u64; 606 607 if ((lio->intf_open) && (changed)) { 608 print_link_info(netdev); 609 lio->link_changes++; 610 611 if (lio->linfo.link.s.link_up) { 612 dev_dbg(&oct->pci_dev->dev, "%s: link_up", __func__); 613 netif_carrier_on(netdev); 614 wake_txqs(netdev); 615 } else { 616 dev_dbg(&oct->pci_dev->dev, "%s: link_off", __func__); 617 netif_carrier_off(netdev); 618 stop_txqs(netdev); 619 } 620 if (lio->linfo.link.s.mtu != current_max_mtu) { 621 netif_info(lio, probe, lio->netdev, "Max MTU changed from %d to %d\n", 622 current_max_mtu, lio->linfo.link.s.mtu); 623 netdev->max_mtu = lio->linfo.link.s.mtu; 624 } 625 if (lio->linfo.link.s.mtu < netdev->mtu) { 626 dev_warn(&oct->pci_dev->dev, 627 "Current MTU is higher than new max MTU; Reducing the current mtu from %d to %d\n", 628 netdev->mtu, lio->linfo.link.s.mtu); 629 queue_delayed_work(lio->link_status_wq.wq, 630 &lio->link_status_wq.wk.work, 0); 631 } 632 } 633 } 634 635 /** 636 * lio_sync_octeon_time - send latest localtime to octeon firmware so that 637 * firmware will correct it's time, in case there is a time skew 638 * 639 * @work: work scheduled to send time update to octeon firmware 640 **/ 641 static void lio_sync_octeon_time(struct work_struct *work) 642 { 643 struct cavium_wk *wk = (struct cavium_wk *)work; 644 struct lio *lio = (struct lio *)wk->ctxptr; 645 struct octeon_device *oct = lio->oct_dev; 646 struct octeon_soft_command *sc; 647 struct timespec64 ts; 648 struct lio_time *lt; 649 int ret; 650 651 sc = octeon_alloc_soft_command(oct, sizeof(struct lio_time), 16, 0); 652 if (!sc) { 653 dev_err(&oct->pci_dev->dev, 654 "Failed to sync time to octeon: soft command allocation failed\n"); 655 return; 656 } 657 658 lt = (struct lio_time *)sc->virtdptr; 659 660 /* Get time of the day */ 661 ktime_get_real_ts64(&ts); 662 lt->sec = ts.tv_sec; 663 lt->nsec = ts.tv_nsec; 664 octeon_swap_8B_data((u64 *)lt, (sizeof(struct lio_time)) / 8); 665 666 sc->iq_no = lio->linfo.txpciq[0].s.q_no; 667 octeon_prepare_soft_command(oct, sc, OPCODE_NIC, 668 OPCODE_NIC_SYNC_OCTEON_TIME, 0, 0, 0); 669 670 init_completion(&sc->complete); 671 sc->sc_status = OCTEON_REQUEST_PENDING; 672 673 ret = octeon_send_soft_command(oct, sc); 674 if (ret == IQ_SEND_FAILED) { 675 dev_err(&oct->pci_dev->dev, 676 "Failed to sync time to octeon: failed to send soft command\n"); 677 octeon_free_soft_command(oct, sc); 678 } else { 679 WRITE_ONCE(sc->caller_is_done, true); 680 } 681 682 queue_delayed_work(lio->sync_octeon_time_wq.wq, 683 &lio->sync_octeon_time_wq.wk.work, 684 msecs_to_jiffies(LIO_SYNC_OCTEON_TIME_INTERVAL_MS)); 685 } 686 687 /** 688 * setup_sync_octeon_time_wq - Sets up the work to periodically update 689 * local time to octeon firmware 690 * 691 * @netdev - network device which should send time update to firmware 692 **/ 693 static inline int setup_sync_octeon_time_wq(struct net_device *netdev) 694 { 695 struct lio *lio = GET_LIO(netdev); 696 struct octeon_device *oct = lio->oct_dev; 697 698 lio->sync_octeon_time_wq.wq = 699 alloc_workqueue("update-octeon-time", WQ_MEM_RECLAIM, 0); 700 if (!lio->sync_octeon_time_wq.wq) { 701 dev_err(&oct->pci_dev->dev, "Unable to create wq to update octeon time\n"); 702 return -1; 703 } 704 INIT_DELAYED_WORK(&lio->sync_octeon_time_wq.wk.work, 705 lio_sync_octeon_time); 706 lio->sync_octeon_time_wq.wk.ctxptr = lio; 707 queue_delayed_work(lio->sync_octeon_time_wq.wq, 708 &lio->sync_octeon_time_wq.wk.work, 709 msecs_to_jiffies(LIO_SYNC_OCTEON_TIME_INTERVAL_MS)); 710 711 return 0; 712 } 713 714 /** 715 * cleanup_sync_octeon_time_wq - stop scheduling and destroy the work created 716 * to periodically update local time to octeon firmware 717 * 718 * @netdev - network device which should send time update to firmware 719 **/ 720 static inline void cleanup_sync_octeon_time_wq(struct net_device *netdev) 721 { 722 struct lio *lio = GET_LIO(netdev); 723 struct cavium_wq *time_wq = &lio->sync_octeon_time_wq; 724 725 if (time_wq->wq) { 726 cancel_delayed_work_sync(&time_wq->wk.work); 727 destroy_workqueue(time_wq->wq); 728 } 729 } 730 731 static struct octeon_device *get_other_octeon_device(struct octeon_device *oct) 732 { 733 struct octeon_device *other_oct; 734 735 other_oct = lio_get_device(oct->octeon_id + 1); 736 737 if (other_oct && other_oct->pci_dev) { 738 int oct_busnum, other_oct_busnum; 739 740 oct_busnum = oct->pci_dev->bus->number; 741 other_oct_busnum = other_oct->pci_dev->bus->number; 742 743 if (oct_busnum == other_oct_busnum) { 744 int oct_slot, other_oct_slot; 745 746 oct_slot = PCI_SLOT(oct->pci_dev->devfn); 747 other_oct_slot = PCI_SLOT(other_oct->pci_dev->devfn); 748 749 if (oct_slot == other_oct_slot) 750 return other_oct; 751 } 752 } 753 754 return NULL; 755 } 756 757 static void disable_all_vf_links(struct octeon_device *oct) 758 { 759 struct net_device *netdev; 760 int max_vfs, vf, i; 761 762 if (!oct) 763 return; 764 765 max_vfs = oct->sriov_info.max_vfs; 766 767 for (i = 0; i < oct->ifcount; i++) { 768 netdev = oct->props[i].netdev; 769 if (!netdev) 770 continue; 771 772 for (vf = 0; vf < max_vfs; vf++) 773 liquidio_set_vf_link_state(netdev, vf, 774 IFLA_VF_LINK_STATE_DISABLE); 775 } 776 } 777 778 static int liquidio_watchdog(void *param) 779 { 780 bool err_msg_was_printed[LIO_MAX_CORES]; 781 u16 mask_of_crashed_or_stuck_cores = 0; 782 bool all_vf_links_are_disabled = false; 783 struct octeon_device *oct = param; 784 struct octeon_device *other_oct; 785 #ifdef CONFIG_MODULE_UNLOAD 786 long refcount, vfs_referencing_pf; 787 u64 vfs_mask1, vfs_mask2; 788 #endif 789 int core; 790 791 memset(err_msg_was_printed, 0, sizeof(err_msg_was_printed)); 792 793 while (!kthread_should_stop()) { 794 /* sleep for a couple of seconds so that we don't hog the CPU */ 795 set_current_state(TASK_INTERRUPTIBLE); 796 schedule_timeout(msecs_to_jiffies(2000)); 797 798 mask_of_crashed_or_stuck_cores = 799 (u16)octeon_read_csr64(oct, CN23XX_SLI_SCRATCH2); 800 801 if (!mask_of_crashed_or_stuck_cores) 802 continue; 803 804 WRITE_ONCE(oct->cores_crashed, true); 805 other_oct = get_other_octeon_device(oct); 806 if (other_oct) 807 WRITE_ONCE(other_oct->cores_crashed, true); 808 809 for (core = 0; core < LIO_MAX_CORES; core++) { 810 bool core_crashed_or_got_stuck; 811 812 core_crashed_or_got_stuck = 813 (mask_of_crashed_or_stuck_cores 814 >> core) & 1; 815 816 if (core_crashed_or_got_stuck && 817 !err_msg_was_printed[core]) { 818 dev_err(&oct->pci_dev->dev, 819 "ERROR: Octeon core %d crashed or got stuck! See oct-fwdump for details.\n", 820 core); 821 err_msg_was_printed[core] = true; 822 } 823 } 824 825 if (all_vf_links_are_disabled) 826 continue; 827 828 disable_all_vf_links(oct); 829 disable_all_vf_links(other_oct); 830 all_vf_links_are_disabled = true; 831 832 #ifdef CONFIG_MODULE_UNLOAD 833 vfs_mask1 = READ_ONCE(oct->sriov_info.vf_drv_loaded_mask); 834 vfs_mask2 = READ_ONCE(other_oct->sriov_info.vf_drv_loaded_mask); 835 836 vfs_referencing_pf = hweight64(vfs_mask1); 837 vfs_referencing_pf += hweight64(vfs_mask2); 838 839 refcount = module_refcount(THIS_MODULE); 840 if (refcount >= vfs_referencing_pf) { 841 while (vfs_referencing_pf) { 842 module_put(THIS_MODULE); 843 vfs_referencing_pf--; 844 } 845 } 846 #endif 847 } 848 849 return 0; 850 } 851 852 /** 853 * \brief PCI probe handler 854 * @param pdev PCI device structure 855 * @param ent unused 856 */ 857 static int 858 liquidio_probe(struct pci_dev *pdev, 859 const struct pci_device_id *ent __attribute__((unused))) 860 { 861 struct octeon_device *oct_dev = NULL; 862 struct handshake *hs; 863 864 oct_dev = octeon_allocate_device(pdev->device, 865 sizeof(struct octeon_device_priv)); 866 if (!oct_dev) { 867 dev_err(&pdev->dev, "Unable to allocate device\n"); 868 return -ENOMEM; 869 } 870 871 if (pdev->device == OCTEON_CN23XX_PF_VID) 872 oct_dev->msix_on = LIO_FLAG_MSIX_ENABLED; 873 874 /* Enable PTP for 6XXX Device */ 875 if (((pdev->device == OCTEON_CN66XX) || 876 (pdev->device == OCTEON_CN68XX))) 877 oct_dev->ptp_enable = true; 878 else 879 oct_dev->ptp_enable = false; 880 881 dev_info(&pdev->dev, "Initializing device %x:%x.\n", 882 (u32)pdev->vendor, (u32)pdev->device); 883 884 /* Assign octeon_device for this device to the private data area. */ 885 pci_set_drvdata(pdev, oct_dev); 886 887 /* set linux specific device pointer */ 888 oct_dev->pci_dev = (void *)pdev; 889 890 oct_dev->subsystem_id = pdev->subsystem_vendor | 891 (pdev->subsystem_device << 16); 892 893 hs = &handshake[oct_dev->octeon_id]; 894 init_completion(&hs->init); 895 init_completion(&hs->started); 896 hs->pci_dev = pdev; 897 898 if (oct_dev->octeon_id == 0) 899 /* first LiquidIO NIC is detected */ 900 complete(&first_stage); 901 902 if (octeon_device_init(oct_dev)) { 903 complete(&hs->init); 904 liquidio_remove(pdev); 905 return -ENOMEM; 906 } 907 908 if (OCTEON_CN23XX_PF(oct_dev)) { 909 u8 bus, device, function; 910 911 if (atomic_read(oct_dev->adapter_refcount) == 1) { 912 /* Each NIC gets one watchdog kernel thread. The first 913 * PF (of each NIC) that gets pci_driver->probe()'d 914 * creates that thread. 915 */ 916 bus = pdev->bus->number; 917 device = PCI_SLOT(pdev->devfn); 918 function = PCI_FUNC(pdev->devfn); 919 oct_dev->watchdog_task = kthread_create( 920 liquidio_watchdog, oct_dev, 921 "liowd/%02hhx:%02hhx.%hhx", bus, device, function); 922 if (!IS_ERR(oct_dev->watchdog_task)) { 923 wake_up_process(oct_dev->watchdog_task); 924 } else { 925 oct_dev->watchdog_task = NULL; 926 dev_err(&oct_dev->pci_dev->dev, 927 "failed to create kernel_thread\n"); 928 liquidio_remove(pdev); 929 return -1; 930 } 931 } 932 } 933 934 oct_dev->rx_pause = 1; 935 oct_dev->tx_pause = 1; 936 937 dev_dbg(&oct_dev->pci_dev->dev, "Device is ready\n"); 938 939 return 0; 940 } 941 942 static bool fw_type_is_auto(void) 943 { 944 return strncmp(fw_type, LIO_FW_NAME_TYPE_AUTO, 945 sizeof(LIO_FW_NAME_TYPE_AUTO)) == 0; 946 } 947 948 /** 949 * \brief PCI FLR for each Octeon device. 950 * @param oct octeon device 951 */ 952 static void octeon_pci_flr(struct octeon_device *oct) 953 { 954 int rc; 955 956 pci_save_state(oct->pci_dev); 957 958 pci_cfg_access_lock(oct->pci_dev); 959 960 /* Quiesce the device completely */ 961 pci_write_config_word(oct->pci_dev, PCI_COMMAND, 962 PCI_COMMAND_INTX_DISABLE); 963 964 rc = __pci_reset_function_locked(oct->pci_dev); 965 966 if (rc != 0) 967 dev_err(&oct->pci_dev->dev, "Error %d resetting PCI function %d\n", 968 rc, oct->pf_num); 969 970 pci_cfg_access_unlock(oct->pci_dev); 971 972 pci_restore_state(oct->pci_dev); 973 } 974 975 /** 976 *\brief Destroy resources associated with octeon device 977 * @param pdev PCI device structure 978 * @param ent unused 979 */ 980 static void octeon_destroy_resources(struct octeon_device *oct) 981 { 982 int i, refcount; 983 struct msix_entry *msix_entries; 984 struct octeon_device_priv *oct_priv = 985 (struct octeon_device_priv *)oct->priv; 986 987 struct handshake *hs; 988 989 switch (atomic_read(&oct->status)) { 990 case OCT_DEV_RUNNING: 991 case OCT_DEV_CORE_OK: 992 993 /* No more instructions will be forwarded. */ 994 atomic_set(&oct->status, OCT_DEV_IN_RESET); 995 996 oct->app_mode = CVM_DRV_INVALID_APP; 997 dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n", 998 lio_get_state_string(&oct->status)); 999 1000 schedule_timeout_uninterruptible(HZ / 10); 1001 1002 /* fallthrough */ 1003 case OCT_DEV_HOST_OK: 1004 1005 /* fallthrough */ 1006 case OCT_DEV_CONSOLE_INIT_DONE: 1007 /* Remove any consoles */ 1008 octeon_remove_consoles(oct); 1009 1010 /* fallthrough */ 1011 case OCT_DEV_IO_QUEUES_DONE: 1012 if (lio_wait_for_instr_fetch(oct)) 1013 dev_err(&oct->pci_dev->dev, "IQ had pending instructions\n"); 1014 1015 if (wait_for_pending_requests(oct)) 1016 dev_err(&oct->pci_dev->dev, "There were pending requests\n"); 1017 1018 /* Disable the input and output queues now. No more packets will 1019 * arrive from Octeon, but we should wait for all packet 1020 * processing to finish. 1021 */ 1022 oct->fn_list.disable_io_queues(oct); 1023 1024 if (lio_wait_for_oq_pkts(oct)) 1025 dev_err(&oct->pci_dev->dev, "OQ had pending packets\n"); 1026 1027 /* Force all requests waiting to be fetched by OCTEON to 1028 * complete. 1029 */ 1030 for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) { 1031 struct octeon_instr_queue *iq; 1032 1033 if (!(oct->io_qmask.iq & BIT_ULL(i))) 1034 continue; 1035 iq = oct->instr_queue[i]; 1036 1037 if (atomic_read(&iq->instr_pending)) { 1038 spin_lock_bh(&iq->lock); 1039 iq->fill_cnt = 0; 1040 iq->octeon_read_index = iq->host_write_index; 1041 iq->stats.instr_processed += 1042 atomic_read(&iq->instr_pending); 1043 lio_process_iq_request_list(oct, iq, 0); 1044 spin_unlock_bh(&iq->lock); 1045 } 1046 } 1047 1048 lio_process_ordered_list(oct, 1); 1049 octeon_free_sc_done_list(oct); 1050 octeon_free_sc_zombie_list(oct); 1051 1052 /* fallthrough */ 1053 case OCT_DEV_INTR_SET_DONE: 1054 /* Disable interrupts */ 1055 oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR); 1056 1057 if (oct->msix_on) { 1058 msix_entries = (struct msix_entry *)oct->msix_entries; 1059 for (i = 0; i < oct->num_msix_irqs - 1; i++) { 1060 if (oct->ioq_vector[i].vector) { 1061 /* clear the affinity_cpumask */ 1062 irq_set_affinity_hint( 1063 msix_entries[i].vector, 1064 NULL); 1065 free_irq(msix_entries[i].vector, 1066 &oct->ioq_vector[i]); 1067 oct->ioq_vector[i].vector = 0; 1068 } 1069 } 1070 /* non-iov vector's argument is oct struct */ 1071 free_irq(msix_entries[i].vector, oct); 1072 1073 pci_disable_msix(oct->pci_dev); 1074 kfree(oct->msix_entries); 1075 oct->msix_entries = NULL; 1076 } else { 1077 /* Release the interrupt line */ 1078 free_irq(oct->pci_dev->irq, oct); 1079 1080 if (oct->flags & LIO_FLAG_MSI_ENABLED) 1081 pci_disable_msi(oct->pci_dev); 1082 } 1083 1084 kfree(oct->irq_name_storage); 1085 oct->irq_name_storage = NULL; 1086 1087 /* fallthrough */ 1088 case OCT_DEV_MSIX_ALLOC_VECTOR_DONE: 1089 if (OCTEON_CN23XX_PF(oct)) 1090 octeon_free_ioq_vector(oct); 1091 1092 /* fallthrough */ 1093 case OCT_DEV_MBOX_SETUP_DONE: 1094 if (OCTEON_CN23XX_PF(oct)) 1095 oct->fn_list.free_mbox(oct); 1096 1097 /* fallthrough */ 1098 case OCT_DEV_IN_RESET: 1099 case OCT_DEV_DROQ_INIT_DONE: 1100 /* Wait for any pending operations */ 1101 mdelay(100); 1102 for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) { 1103 if (!(oct->io_qmask.oq & BIT_ULL(i))) 1104 continue; 1105 octeon_delete_droq(oct, i); 1106 } 1107 1108 /* Force any pending handshakes to complete */ 1109 for (i = 0; i < MAX_OCTEON_DEVICES; i++) { 1110 hs = &handshake[i]; 1111 1112 if (hs->pci_dev) { 1113 handshake[oct->octeon_id].init_ok = 0; 1114 complete(&handshake[oct->octeon_id].init); 1115 handshake[oct->octeon_id].started_ok = 0; 1116 complete(&handshake[oct->octeon_id].started); 1117 } 1118 } 1119 1120 /* fallthrough */ 1121 case OCT_DEV_RESP_LIST_INIT_DONE: 1122 octeon_delete_response_list(oct); 1123 1124 /* fallthrough */ 1125 case OCT_DEV_INSTR_QUEUE_INIT_DONE: 1126 for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) { 1127 if (!(oct->io_qmask.iq & BIT_ULL(i))) 1128 continue; 1129 octeon_delete_instr_queue(oct, i); 1130 } 1131 #ifdef CONFIG_PCI_IOV 1132 if (oct->sriov_info.sriov_enabled) 1133 pci_disable_sriov(oct->pci_dev); 1134 #endif 1135 /* fallthrough */ 1136 case OCT_DEV_SC_BUFF_POOL_INIT_DONE: 1137 octeon_free_sc_buffer_pool(oct); 1138 1139 /* fallthrough */ 1140 case OCT_DEV_DISPATCH_INIT_DONE: 1141 octeon_delete_dispatch_list(oct); 1142 cancel_delayed_work_sync(&oct->nic_poll_work.work); 1143 1144 /* fallthrough */ 1145 case OCT_DEV_PCI_MAP_DONE: 1146 refcount = octeon_deregister_device(oct); 1147 1148 /* Soft reset the octeon device before exiting. 1149 * However, if fw was loaded from card (i.e. autoboot), 1150 * perform an FLR instead. 1151 * Implementation note: only soft-reset the device 1152 * if it is a CN6XXX OR the LAST CN23XX device. 1153 */ 1154 if (atomic_read(oct->adapter_fw_state) == FW_IS_PRELOADED) 1155 octeon_pci_flr(oct); 1156 else if (OCTEON_CN6XXX(oct) || !refcount) 1157 oct->fn_list.soft_reset(oct); 1158 1159 octeon_unmap_pci_barx(oct, 0); 1160 octeon_unmap_pci_barx(oct, 1); 1161 1162 /* fallthrough */ 1163 case OCT_DEV_PCI_ENABLE_DONE: 1164 pci_clear_master(oct->pci_dev); 1165 /* Disable the device, releasing the PCI INT */ 1166 pci_disable_device(oct->pci_dev); 1167 1168 /* fallthrough */ 1169 case OCT_DEV_BEGIN_STATE: 1170 /* Nothing to be done here either */ 1171 break; 1172 } /* end switch (oct->status) */ 1173 1174 tasklet_kill(&oct_priv->droq_tasklet); 1175 } 1176 1177 /** 1178 * \brief Send Rx control command 1179 * @param lio per-network private data 1180 * @param start_stop whether to start or stop 1181 */ 1182 static void send_rx_ctrl_cmd(struct lio *lio, int start_stop) 1183 { 1184 struct octeon_soft_command *sc; 1185 union octnet_cmd *ncmd; 1186 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; 1187 int retval; 1188 1189 if (oct->props[lio->ifidx].rx_on == start_stop) 1190 return; 1191 1192 sc = (struct octeon_soft_command *) 1193 octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE, 1194 16, 0); 1195 if (!sc) { 1196 netif_info(lio, rx_err, lio->netdev, 1197 "Failed to allocate octeon_soft_command\n"); 1198 return; 1199 } 1200 1201 ncmd = (union octnet_cmd *)sc->virtdptr; 1202 1203 ncmd->u64 = 0; 1204 ncmd->s.cmd = OCTNET_CMD_RX_CTL; 1205 ncmd->s.param1 = start_stop; 1206 1207 octeon_swap_8B_data((u64 *)ncmd, (OCTNET_CMD_SIZE >> 3)); 1208 1209 sc->iq_no = lio->linfo.txpciq[0].s.q_no; 1210 1211 octeon_prepare_soft_command(oct, sc, OPCODE_NIC, 1212 OPCODE_NIC_CMD, 0, 0, 0); 1213 1214 init_completion(&sc->complete); 1215 sc->sc_status = OCTEON_REQUEST_PENDING; 1216 1217 retval = octeon_send_soft_command(oct, sc); 1218 if (retval == IQ_SEND_FAILED) { 1219 netif_info(lio, rx_err, lio->netdev, "Failed to send RX Control message\n"); 1220 octeon_free_soft_command(oct, sc); 1221 return; 1222 } else { 1223 /* Sleep on a wait queue till the cond flag indicates that the 1224 * response arrived or timed-out. 1225 */ 1226 retval = wait_for_sc_completion_timeout(oct, sc, 0); 1227 if (retval) 1228 return; 1229 1230 oct->props[lio->ifidx].rx_on = start_stop; 1231 WRITE_ONCE(sc->caller_is_done, true); 1232 } 1233 } 1234 1235 /** 1236 * \brief Destroy NIC device interface 1237 * @param oct octeon device 1238 * @param ifidx which interface to destroy 1239 * 1240 * Cleanup associated with each interface for an Octeon device when NIC 1241 * module is being unloaded or if initialization fails during load. 1242 */ 1243 static void liquidio_destroy_nic_device(struct octeon_device *oct, int ifidx) 1244 { 1245 struct net_device *netdev = oct->props[ifidx].netdev; 1246 struct octeon_device_priv *oct_priv = 1247 (struct octeon_device_priv *)oct->priv; 1248 struct napi_struct *napi, *n; 1249 struct lio *lio; 1250 1251 if (!netdev) { 1252 dev_err(&oct->pci_dev->dev, "%s No netdevice ptr for index %d\n", 1253 __func__, ifidx); 1254 return; 1255 } 1256 1257 lio = GET_LIO(netdev); 1258 1259 dev_dbg(&oct->pci_dev->dev, "NIC device cleanup\n"); 1260 1261 if (atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING) 1262 liquidio_stop(netdev); 1263 1264 if (oct->props[lio->ifidx].napi_enabled == 1) { 1265 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list) 1266 napi_disable(napi); 1267 1268 oct->props[lio->ifidx].napi_enabled = 0; 1269 1270 if (OCTEON_CN23XX_PF(oct)) 1271 oct->droq[0]->ops.poll_mode = 0; 1272 } 1273 1274 /* Delete NAPI */ 1275 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list) 1276 netif_napi_del(napi); 1277 1278 tasklet_enable(&oct_priv->droq_tasklet); 1279 1280 if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED) 1281 unregister_netdev(netdev); 1282 1283 cleanup_sync_octeon_time_wq(netdev); 1284 cleanup_link_status_change_wq(netdev); 1285 1286 cleanup_rx_oom_poll_fn(netdev); 1287 1288 lio_delete_glists(lio); 1289 1290 free_netdev(netdev); 1291 1292 oct->props[ifidx].gmxport = -1; 1293 1294 oct->props[ifidx].netdev = NULL; 1295 } 1296 1297 /** 1298 * \brief Stop complete NIC functionality 1299 * @param oct octeon device 1300 */ 1301 static int liquidio_stop_nic_module(struct octeon_device *oct) 1302 { 1303 int i, j; 1304 struct lio *lio; 1305 1306 dev_dbg(&oct->pci_dev->dev, "Stopping network interfaces\n"); 1307 if (!oct->ifcount) { 1308 dev_err(&oct->pci_dev->dev, "Init for Octeon was not completed\n"); 1309 return 1; 1310 } 1311 1312 spin_lock_bh(&oct->cmd_resp_wqlock); 1313 oct->cmd_resp_state = OCT_DRV_OFFLINE; 1314 spin_unlock_bh(&oct->cmd_resp_wqlock); 1315 1316 lio_vf_rep_destroy(oct); 1317 1318 for (i = 0; i < oct->ifcount; i++) { 1319 lio = GET_LIO(oct->props[i].netdev); 1320 for (j = 0; j < oct->num_oqs; j++) 1321 octeon_unregister_droq_ops(oct, 1322 lio->linfo.rxpciq[j].s.q_no); 1323 } 1324 1325 for (i = 0; i < oct->ifcount; i++) 1326 liquidio_destroy_nic_device(oct, i); 1327 1328 if (oct->devlink) { 1329 devlink_unregister(oct->devlink); 1330 devlink_free(oct->devlink); 1331 oct->devlink = NULL; 1332 } 1333 1334 dev_dbg(&oct->pci_dev->dev, "Network interfaces stopped\n"); 1335 return 0; 1336 } 1337 1338 /** 1339 * \brief Cleans up resources at unload time 1340 * @param pdev PCI device structure 1341 */ 1342 static void liquidio_remove(struct pci_dev *pdev) 1343 { 1344 struct octeon_device *oct_dev = pci_get_drvdata(pdev); 1345 1346 dev_dbg(&oct_dev->pci_dev->dev, "Stopping device\n"); 1347 1348 if (oct_dev->watchdog_task) 1349 kthread_stop(oct_dev->watchdog_task); 1350 1351 if (!oct_dev->octeon_id && 1352 oct_dev->fw_info.app_cap_flags & LIQUIDIO_SWITCHDEV_CAP) 1353 lio_vf_rep_modexit(); 1354 1355 if (oct_dev->app_mode && (oct_dev->app_mode == CVM_DRV_NIC_APP)) 1356 liquidio_stop_nic_module(oct_dev); 1357 1358 /* Reset the octeon device and cleanup all memory allocated for 1359 * the octeon device by driver. 1360 */ 1361 octeon_destroy_resources(oct_dev); 1362 1363 dev_info(&oct_dev->pci_dev->dev, "Device removed\n"); 1364 1365 /* This octeon device has been removed. Update the global 1366 * data structure to reflect this. Free the device structure. 1367 */ 1368 octeon_free_device_mem(oct_dev); 1369 } 1370 1371 /** 1372 * \brief Identify the Octeon device and to map the BAR address space 1373 * @param oct octeon device 1374 */ 1375 static int octeon_chip_specific_setup(struct octeon_device *oct) 1376 { 1377 u32 dev_id, rev_id; 1378 int ret = 1; 1379 char *s; 1380 1381 pci_read_config_dword(oct->pci_dev, 0, &dev_id); 1382 pci_read_config_dword(oct->pci_dev, 8, &rev_id); 1383 oct->rev_id = rev_id & 0xff; 1384 1385 switch (dev_id) { 1386 case OCTEON_CN68XX_PCIID: 1387 oct->chip_id = OCTEON_CN68XX; 1388 ret = lio_setup_cn68xx_octeon_device(oct); 1389 s = "CN68XX"; 1390 break; 1391 1392 case OCTEON_CN66XX_PCIID: 1393 oct->chip_id = OCTEON_CN66XX; 1394 ret = lio_setup_cn66xx_octeon_device(oct); 1395 s = "CN66XX"; 1396 break; 1397 1398 case OCTEON_CN23XX_PCIID_PF: 1399 oct->chip_id = OCTEON_CN23XX_PF_VID; 1400 ret = setup_cn23xx_octeon_pf_device(oct); 1401 if (ret) 1402 break; 1403 #ifdef CONFIG_PCI_IOV 1404 if (!ret) 1405 pci_sriov_set_totalvfs(oct->pci_dev, 1406 oct->sriov_info.max_vfs); 1407 #endif 1408 s = "CN23XX"; 1409 break; 1410 1411 default: 1412 s = "?"; 1413 dev_err(&oct->pci_dev->dev, "Unknown device found (dev_id: %x)\n", 1414 dev_id); 1415 } 1416 1417 if (!ret) 1418 dev_info(&oct->pci_dev->dev, "%s PASS%d.%d %s Version: %s\n", s, 1419 OCTEON_MAJOR_REV(oct), 1420 OCTEON_MINOR_REV(oct), 1421 octeon_get_conf(oct)->card_name, 1422 LIQUIDIO_VERSION); 1423 1424 return ret; 1425 } 1426 1427 /** 1428 * \brief PCI initialization for each Octeon device. 1429 * @param oct octeon device 1430 */ 1431 static int octeon_pci_os_setup(struct octeon_device *oct) 1432 { 1433 /* setup PCI stuff first */ 1434 if (pci_enable_device(oct->pci_dev)) { 1435 dev_err(&oct->pci_dev->dev, "pci_enable_device failed\n"); 1436 return 1; 1437 } 1438 1439 if (dma_set_mask_and_coherent(&oct->pci_dev->dev, DMA_BIT_MASK(64))) { 1440 dev_err(&oct->pci_dev->dev, "Unexpected DMA device capability\n"); 1441 pci_disable_device(oct->pci_dev); 1442 return 1; 1443 } 1444 1445 /* Enable PCI DMA Master. */ 1446 pci_set_master(oct->pci_dev); 1447 1448 return 0; 1449 } 1450 1451 /** 1452 * \brief Unmap and free network buffer 1453 * @param buf buffer 1454 */ 1455 static void free_netbuf(void *buf) 1456 { 1457 struct sk_buff *skb; 1458 struct octnet_buf_free_info *finfo; 1459 struct lio *lio; 1460 1461 finfo = (struct octnet_buf_free_info *)buf; 1462 skb = finfo->skb; 1463 lio = finfo->lio; 1464 1465 dma_unmap_single(&lio->oct_dev->pci_dev->dev, finfo->dptr, skb->len, 1466 DMA_TO_DEVICE); 1467 1468 tx_buffer_free(skb); 1469 } 1470 1471 /** 1472 * \brief Unmap and free gather buffer 1473 * @param buf buffer 1474 */ 1475 static void free_netsgbuf(void *buf) 1476 { 1477 struct octnet_buf_free_info *finfo; 1478 struct sk_buff *skb; 1479 struct lio *lio; 1480 struct octnic_gather *g; 1481 int i, frags, iq; 1482 1483 finfo = (struct octnet_buf_free_info *)buf; 1484 skb = finfo->skb; 1485 lio = finfo->lio; 1486 g = finfo->g; 1487 frags = skb_shinfo(skb)->nr_frags; 1488 1489 dma_unmap_single(&lio->oct_dev->pci_dev->dev, 1490 g->sg[0].ptr[0], (skb->len - skb->data_len), 1491 DMA_TO_DEVICE); 1492 1493 i = 1; 1494 while (frags--) { 1495 skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1]; 1496 1497 pci_unmap_page((lio->oct_dev)->pci_dev, 1498 g->sg[(i >> 2)].ptr[(i & 3)], 1499 skb_frag_size(frag), DMA_TO_DEVICE); 1500 i++; 1501 } 1502 1503 iq = skb_iq(lio->oct_dev, skb); 1504 spin_lock(&lio->glist_lock[iq]); 1505 list_add_tail(&g->list, &lio->glist[iq]); 1506 spin_unlock(&lio->glist_lock[iq]); 1507 1508 tx_buffer_free(skb); 1509 } 1510 1511 /** 1512 * \brief Unmap and free gather buffer with response 1513 * @param buf buffer 1514 */ 1515 static void free_netsgbuf_with_resp(void *buf) 1516 { 1517 struct octeon_soft_command *sc; 1518 struct octnet_buf_free_info *finfo; 1519 struct sk_buff *skb; 1520 struct lio *lio; 1521 struct octnic_gather *g; 1522 int i, frags, iq; 1523 1524 sc = (struct octeon_soft_command *)buf; 1525 skb = (struct sk_buff *)sc->callback_arg; 1526 finfo = (struct octnet_buf_free_info *)&skb->cb; 1527 1528 lio = finfo->lio; 1529 g = finfo->g; 1530 frags = skb_shinfo(skb)->nr_frags; 1531 1532 dma_unmap_single(&lio->oct_dev->pci_dev->dev, 1533 g->sg[0].ptr[0], (skb->len - skb->data_len), 1534 DMA_TO_DEVICE); 1535 1536 i = 1; 1537 while (frags--) { 1538 skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1]; 1539 1540 pci_unmap_page((lio->oct_dev)->pci_dev, 1541 g->sg[(i >> 2)].ptr[(i & 3)], 1542 skb_frag_size(frag), DMA_TO_DEVICE); 1543 i++; 1544 } 1545 1546 iq = skb_iq(lio->oct_dev, skb); 1547 1548 spin_lock(&lio->glist_lock[iq]); 1549 list_add_tail(&g->list, &lio->glist[iq]); 1550 spin_unlock(&lio->glist_lock[iq]); 1551 1552 /* Don't free the skb yet */ 1553 } 1554 1555 /** 1556 * \brief Adjust ptp frequency 1557 * @param ptp PTP clock info 1558 * @param ppb how much to adjust by, in parts-per-billion 1559 */ 1560 static int liquidio_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb) 1561 { 1562 struct lio *lio = container_of(ptp, struct lio, ptp_info); 1563 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; 1564 u64 comp, delta; 1565 unsigned long flags; 1566 bool neg_adj = false; 1567 1568 if (ppb < 0) { 1569 neg_adj = true; 1570 ppb = -ppb; 1571 } 1572 1573 /* The hardware adds the clock compensation value to the 1574 * PTP clock on every coprocessor clock cycle, so we 1575 * compute the delta in terms of coprocessor clocks. 1576 */ 1577 delta = (u64)ppb << 32; 1578 do_div(delta, oct->coproc_clock_rate); 1579 1580 spin_lock_irqsave(&lio->ptp_lock, flags); 1581 comp = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_COMP); 1582 if (neg_adj) 1583 comp -= delta; 1584 else 1585 comp += delta; 1586 lio_pci_writeq(oct, comp, CN6XXX_MIO_PTP_CLOCK_COMP); 1587 spin_unlock_irqrestore(&lio->ptp_lock, flags); 1588 1589 return 0; 1590 } 1591 1592 /** 1593 * \brief Adjust ptp time 1594 * @param ptp PTP clock info 1595 * @param delta how much to adjust by, in nanosecs 1596 */ 1597 static int liquidio_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta) 1598 { 1599 unsigned long flags; 1600 struct lio *lio = container_of(ptp, struct lio, ptp_info); 1601 1602 spin_lock_irqsave(&lio->ptp_lock, flags); 1603 lio->ptp_adjust += delta; 1604 spin_unlock_irqrestore(&lio->ptp_lock, flags); 1605 1606 return 0; 1607 } 1608 1609 /** 1610 * \brief Get hardware clock time, including any adjustment 1611 * @param ptp PTP clock info 1612 * @param ts timespec 1613 */ 1614 static int liquidio_ptp_gettime(struct ptp_clock_info *ptp, 1615 struct timespec64 *ts) 1616 { 1617 u64 ns; 1618 unsigned long flags; 1619 struct lio *lio = container_of(ptp, struct lio, ptp_info); 1620 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; 1621 1622 spin_lock_irqsave(&lio->ptp_lock, flags); 1623 ns = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_HI); 1624 ns += lio->ptp_adjust; 1625 spin_unlock_irqrestore(&lio->ptp_lock, flags); 1626 1627 *ts = ns_to_timespec64(ns); 1628 1629 return 0; 1630 } 1631 1632 /** 1633 * \brief Set hardware clock time. Reset adjustment 1634 * @param ptp PTP clock info 1635 * @param ts timespec 1636 */ 1637 static int liquidio_ptp_settime(struct ptp_clock_info *ptp, 1638 const struct timespec64 *ts) 1639 { 1640 u64 ns; 1641 unsigned long flags; 1642 struct lio *lio = container_of(ptp, struct lio, ptp_info); 1643 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; 1644 1645 ns = timespec64_to_ns(ts); 1646 1647 spin_lock_irqsave(&lio->ptp_lock, flags); 1648 lio_pci_writeq(oct, ns, CN6XXX_MIO_PTP_CLOCK_HI); 1649 lio->ptp_adjust = 0; 1650 spin_unlock_irqrestore(&lio->ptp_lock, flags); 1651 1652 return 0; 1653 } 1654 1655 /** 1656 * \brief Check if PTP is enabled 1657 * @param ptp PTP clock info 1658 * @param rq request 1659 * @param on is it on 1660 */ 1661 static int 1662 liquidio_ptp_enable(struct ptp_clock_info *ptp __attribute__((unused)), 1663 struct ptp_clock_request *rq __attribute__((unused)), 1664 int on __attribute__((unused))) 1665 { 1666 return -EOPNOTSUPP; 1667 } 1668 1669 /** 1670 * \brief Open PTP clock source 1671 * @param netdev network device 1672 */ 1673 static void oct_ptp_open(struct net_device *netdev) 1674 { 1675 struct lio *lio = GET_LIO(netdev); 1676 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; 1677 1678 spin_lock_init(&lio->ptp_lock); 1679 1680 snprintf(lio->ptp_info.name, 16, "%s", netdev->name); 1681 lio->ptp_info.owner = THIS_MODULE; 1682 lio->ptp_info.max_adj = 250000000; 1683 lio->ptp_info.n_alarm = 0; 1684 lio->ptp_info.n_ext_ts = 0; 1685 lio->ptp_info.n_per_out = 0; 1686 lio->ptp_info.pps = 0; 1687 lio->ptp_info.adjfreq = liquidio_ptp_adjfreq; 1688 lio->ptp_info.adjtime = liquidio_ptp_adjtime; 1689 lio->ptp_info.gettime64 = liquidio_ptp_gettime; 1690 lio->ptp_info.settime64 = liquidio_ptp_settime; 1691 lio->ptp_info.enable = liquidio_ptp_enable; 1692 1693 lio->ptp_adjust = 0; 1694 1695 lio->ptp_clock = ptp_clock_register(&lio->ptp_info, 1696 &oct->pci_dev->dev); 1697 1698 if (IS_ERR(lio->ptp_clock)) 1699 lio->ptp_clock = NULL; 1700 } 1701 1702 /** 1703 * \brief Init PTP clock 1704 * @param oct octeon device 1705 */ 1706 static void liquidio_ptp_init(struct octeon_device *oct) 1707 { 1708 u64 clock_comp, cfg; 1709 1710 clock_comp = (u64)NSEC_PER_SEC << 32; 1711 do_div(clock_comp, oct->coproc_clock_rate); 1712 lio_pci_writeq(oct, clock_comp, CN6XXX_MIO_PTP_CLOCK_COMP); 1713 1714 /* Enable */ 1715 cfg = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_CFG); 1716 lio_pci_writeq(oct, cfg | 0x01, CN6XXX_MIO_PTP_CLOCK_CFG); 1717 } 1718 1719 /** 1720 * \brief Load firmware to device 1721 * @param oct octeon device 1722 * 1723 * Maps device to firmware filename, requests firmware, and downloads it 1724 */ 1725 static int load_firmware(struct octeon_device *oct) 1726 { 1727 int ret = 0; 1728 const struct firmware *fw; 1729 char fw_name[LIO_MAX_FW_FILENAME_LEN]; 1730 char *tmp_fw_type; 1731 1732 if (fw_type_is_auto()) { 1733 tmp_fw_type = LIO_FW_NAME_TYPE_NIC; 1734 strncpy(fw_type, tmp_fw_type, sizeof(fw_type)); 1735 } else { 1736 tmp_fw_type = fw_type; 1737 } 1738 1739 sprintf(fw_name, "%s%s%s_%s%s", LIO_FW_DIR, LIO_FW_BASE_NAME, 1740 octeon_get_conf(oct)->card_name, tmp_fw_type, 1741 LIO_FW_NAME_SUFFIX); 1742 1743 ret = request_firmware(&fw, fw_name, &oct->pci_dev->dev); 1744 if (ret) { 1745 dev_err(&oct->pci_dev->dev, "Request firmware failed. Could not find file %s.\n", 1746 fw_name); 1747 release_firmware(fw); 1748 return ret; 1749 } 1750 1751 ret = octeon_download_firmware(oct, fw->data, fw->size); 1752 1753 release_firmware(fw); 1754 1755 return ret; 1756 } 1757 1758 /** 1759 * \brief Poll routine for checking transmit queue status 1760 * @param work work_struct data structure 1761 */ 1762 static void octnet_poll_check_txq_status(struct work_struct *work) 1763 { 1764 struct cavium_wk *wk = (struct cavium_wk *)work; 1765 struct lio *lio = (struct lio *)wk->ctxptr; 1766 1767 if (!ifstate_check(lio, LIO_IFSTATE_RUNNING)) 1768 return; 1769 1770 check_txq_status(lio); 1771 queue_delayed_work(lio->txq_status_wq.wq, 1772 &lio->txq_status_wq.wk.work, msecs_to_jiffies(1)); 1773 } 1774 1775 /** 1776 * \brief Sets up the txq poll check 1777 * @param netdev network device 1778 */ 1779 static inline int setup_tx_poll_fn(struct net_device *netdev) 1780 { 1781 struct lio *lio = GET_LIO(netdev); 1782 struct octeon_device *oct = lio->oct_dev; 1783 1784 lio->txq_status_wq.wq = alloc_workqueue("txq-status", 1785 WQ_MEM_RECLAIM, 0); 1786 if (!lio->txq_status_wq.wq) { 1787 dev_err(&oct->pci_dev->dev, "unable to create cavium txq status wq\n"); 1788 return -1; 1789 } 1790 INIT_DELAYED_WORK(&lio->txq_status_wq.wk.work, 1791 octnet_poll_check_txq_status); 1792 lio->txq_status_wq.wk.ctxptr = lio; 1793 queue_delayed_work(lio->txq_status_wq.wq, 1794 &lio->txq_status_wq.wk.work, msecs_to_jiffies(1)); 1795 return 0; 1796 } 1797 1798 static inline void cleanup_tx_poll_fn(struct net_device *netdev) 1799 { 1800 struct lio *lio = GET_LIO(netdev); 1801 1802 if (lio->txq_status_wq.wq) { 1803 cancel_delayed_work_sync(&lio->txq_status_wq.wk.work); 1804 destroy_workqueue(lio->txq_status_wq.wq); 1805 } 1806 } 1807 1808 /** 1809 * \brief Net device open for LiquidIO 1810 * @param netdev network device 1811 */ 1812 static int liquidio_open(struct net_device *netdev) 1813 { 1814 struct lio *lio = GET_LIO(netdev); 1815 struct octeon_device *oct = lio->oct_dev; 1816 struct octeon_device_priv *oct_priv = 1817 (struct octeon_device_priv *)oct->priv; 1818 struct napi_struct *napi, *n; 1819 1820 if (oct->props[lio->ifidx].napi_enabled == 0) { 1821 tasklet_disable(&oct_priv->droq_tasklet); 1822 1823 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list) 1824 napi_enable(napi); 1825 1826 oct->props[lio->ifidx].napi_enabled = 1; 1827 1828 if (OCTEON_CN23XX_PF(oct)) 1829 oct->droq[0]->ops.poll_mode = 1; 1830 } 1831 1832 if (oct->ptp_enable) 1833 oct_ptp_open(netdev); 1834 1835 ifstate_set(lio, LIO_IFSTATE_RUNNING); 1836 1837 if (OCTEON_CN23XX_PF(oct)) { 1838 if (!oct->msix_on) 1839 if (setup_tx_poll_fn(netdev)) 1840 return -1; 1841 } else { 1842 if (setup_tx_poll_fn(netdev)) 1843 return -1; 1844 } 1845 1846 netif_tx_start_all_queues(netdev); 1847 1848 /* Ready for link status updates */ 1849 lio->intf_open = 1; 1850 1851 netif_info(lio, ifup, lio->netdev, "Interface Open, ready for traffic\n"); 1852 1853 /* tell Octeon to start forwarding packets to host */ 1854 send_rx_ctrl_cmd(lio, 1); 1855 1856 /* start periodical statistics fetch */ 1857 INIT_DELAYED_WORK(&lio->stats_wk.work, lio_fetch_stats); 1858 lio->stats_wk.ctxptr = lio; 1859 schedule_delayed_work(&lio->stats_wk.work, msecs_to_jiffies 1860 (LIQUIDIO_NDEV_STATS_POLL_TIME_MS)); 1861 1862 dev_info(&oct->pci_dev->dev, "%s interface is opened\n", 1863 netdev->name); 1864 1865 return 0; 1866 } 1867 1868 /** 1869 * \brief Net device stop for LiquidIO 1870 * @param netdev network device 1871 */ 1872 static int liquidio_stop(struct net_device *netdev) 1873 { 1874 struct lio *lio = GET_LIO(netdev); 1875 struct octeon_device *oct = lio->oct_dev; 1876 struct octeon_device_priv *oct_priv = 1877 (struct octeon_device_priv *)oct->priv; 1878 struct napi_struct *napi, *n; 1879 1880 ifstate_reset(lio, LIO_IFSTATE_RUNNING); 1881 1882 /* Stop any link updates */ 1883 lio->intf_open = 0; 1884 1885 stop_txqs(netdev); 1886 1887 /* Inform that netif carrier is down */ 1888 netif_carrier_off(netdev); 1889 netif_tx_disable(netdev); 1890 1891 lio->linfo.link.s.link_up = 0; 1892 lio->link_changes++; 1893 1894 /* Tell Octeon that nic interface is down. */ 1895 send_rx_ctrl_cmd(lio, 0); 1896 1897 if (OCTEON_CN23XX_PF(oct)) { 1898 if (!oct->msix_on) 1899 cleanup_tx_poll_fn(netdev); 1900 } else { 1901 cleanup_tx_poll_fn(netdev); 1902 } 1903 1904 cancel_delayed_work_sync(&lio->stats_wk.work); 1905 1906 if (lio->ptp_clock) { 1907 ptp_clock_unregister(lio->ptp_clock); 1908 lio->ptp_clock = NULL; 1909 } 1910 1911 /* Wait for any pending Rx descriptors */ 1912 if (lio_wait_for_clean_oq(oct)) 1913 netif_info(lio, rx_err, lio->netdev, 1914 "Proceeding with stop interface after partial RX desc processing\n"); 1915 1916 if (oct->props[lio->ifidx].napi_enabled == 1) { 1917 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list) 1918 napi_disable(napi); 1919 1920 oct->props[lio->ifidx].napi_enabled = 0; 1921 1922 if (OCTEON_CN23XX_PF(oct)) 1923 oct->droq[0]->ops.poll_mode = 0; 1924 1925 tasklet_enable(&oct_priv->droq_tasklet); 1926 } 1927 1928 dev_info(&oct->pci_dev->dev, "%s interface is stopped\n", netdev->name); 1929 1930 return 0; 1931 } 1932 1933 /** 1934 * \brief Converts a mask based on net device flags 1935 * @param netdev network device 1936 * 1937 * This routine generates a octnet_ifflags mask from the net device flags 1938 * received from the OS. 1939 */ 1940 static inline enum octnet_ifflags get_new_flags(struct net_device *netdev) 1941 { 1942 enum octnet_ifflags f = OCTNET_IFFLAG_UNICAST; 1943 1944 if (netdev->flags & IFF_PROMISC) 1945 f |= OCTNET_IFFLAG_PROMISC; 1946 1947 if (netdev->flags & IFF_ALLMULTI) 1948 f |= OCTNET_IFFLAG_ALLMULTI; 1949 1950 if (netdev->flags & IFF_MULTICAST) { 1951 f |= OCTNET_IFFLAG_MULTICAST; 1952 1953 /* Accept all multicast addresses if there are more than we 1954 * can handle 1955 */ 1956 if (netdev_mc_count(netdev) > MAX_OCTEON_MULTICAST_ADDR) 1957 f |= OCTNET_IFFLAG_ALLMULTI; 1958 } 1959 1960 if (netdev->flags & IFF_BROADCAST) 1961 f |= OCTNET_IFFLAG_BROADCAST; 1962 1963 return f; 1964 } 1965 1966 /** 1967 * \brief Net device set_multicast_list 1968 * @param netdev network device 1969 */ 1970 static void liquidio_set_mcast_list(struct net_device *netdev) 1971 { 1972 struct lio *lio = GET_LIO(netdev); 1973 struct octeon_device *oct = lio->oct_dev; 1974 struct octnic_ctrl_pkt nctrl; 1975 struct netdev_hw_addr *ha; 1976 u64 *mc; 1977 int ret; 1978 int mc_count = min(netdev_mc_count(netdev), MAX_OCTEON_MULTICAST_ADDR); 1979 1980 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); 1981 1982 /* Create a ctrl pkt command to be sent to core app. */ 1983 nctrl.ncmd.u64 = 0; 1984 nctrl.ncmd.s.cmd = OCTNET_CMD_SET_MULTI_LIST; 1985 nctrl.ncmd.s.param1 = get_new_flags(netdev); 1986 nctrl.ncmd.s.param2 = mc_count; 1987 nctrl.ncmd.s.more = mc_count; 1988 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; 1989 nctrl.netpndev = (u64)netdev; 1990 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion; 1991 1992 /* copy all the addresses into the udd */ 1993 mc = &nctrl.udd[0]; 1994 netdev_for_each_mc_addr(ha, netdev) { 1995 *mc = 0; 1996 memcpy(((u8 *)mc) + 2, ha->addr, ETH_ALEN); 1997 /* no need to swap bytes */ 1998 1999 if (++mc > &nctrl.udd[mc_count]) 2000 break; 2001 } 2002 2003 /* Apparently, any activity in this call from the kernel has to 2004 * be atomic. So we won't wait for response. 2005 */ 2006 2007 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl); 2008 if (ret) { 2009 dev_err(&oct->pci_dev->dev, "DEVFLAGS change failed in core (ret: 0x%x)\n", 2010 ret); 2011 } 2012 } 2013 2014 /** 2015 * \brief Net device set_mac_address 2016 * @param netdev network device 2017 */ 2018 static int liquidio_set_mac(struct net_device *netdev, void *p) 2019 { 2020 int ret = 0; 2021 struct lio *lio = GET_LIO(netdev); 2022 struct octeon_device *oct = lio->oct_dev; 2023 struct sockaddr *addr = (struct sockaddr *)p; 2024 struct octnic_ctrl_pkt nctrl; 2025 2026 if (!is_valid_ether_addr(addr->sa_data)) 2027 return -EADDRNOTAVAIL; 2028 2029 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); 2030 2031 nctrl.ncmd.u64 = 0; 2032 nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MACADDR; 2033 nctrl.ncmd.s.param1 = 0; 2034 nctrl.ncmd.s.more = 1; 2035 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; 2036 nctrl.netpndev = (u64)netdev; 2037 2038 nctrl.udd[0] = 0; 2039 /* The MAC Address is presented in network byte order. */ 2040 memcpy((u8 *)&nctrl.udd[0] + 2, addr->sa_data, ETH_ALEN); 2041 2042 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl); 2043 if (ret < 0) { 2044 dev_err(&oct->pci_dev->dev, "MAC Address change failed\n"); 2045 return -ENOMEM; 2046 } 2047 2048 if (nctrl.sc_status) { 2049 dev_err(&oct->pci_dev->dev, 2050 "%s: MAC Address change failed. sc return=%x\n", 2051 __func__, nctrl.sc_status); 2052 return -EIO; 2053 } 2054 2055 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); 2056 memcpy(((u8 *)&lio->linfo.hw_addr) + 2, addr->sa_data, ETH_ALEN); 2057 2058 return 0; 2059 } 2060 2061 static void 2062 liquidio_get_stats64(struct net_device *netdev, 2063 struct rtnl_link_stats64 *lstats) 2064 { 2065 struct lio *lio = GET_LIO(netdev); 2066 struct octeon_device *oct; 2067 u64 pkts = 0, drop = 0, bytes = 0; 2068 struct oct_droq_stats *oq_stats; 2069 struct oct_iq_stats *iq_stats; 2070 int i, iq_no, oq_no; 2071 2072 oct = lio->oct_dev; 2073 2074 if (ifstate_check(lio, LIO_IFSTATE_RESETTING)) 2075 return; 2076 2077 for (i = 0; i < oct->num_iqs; i++) { 2078 iq_no = lio->linfo.txpciq[i].s.q_no; 2079 iq_stats = &oct->instr_queue[iq_no]->stats; 2080 pkts += iq_stats->tx_done; 2081 drop += iq_stats->tx_dropped; 2082 bytes += iq_stats->tx_tot_bytes; 2083 } 2084 2085 lstats->tx_packets = pkts; 2086 lstats->tx_bytes = bytes; 2087 lstats->tx_dropped = drop; 2088 2089 pkts = 0; 2090 drop = 0; 2091 bytes = 0; 2092 2093 for (i = 0; i < oct->num_oqs; i++) { 2094 oq_no = lio->linfo.rxpciq[i].s.q_no; 2095 oq_stats = &oct->droq[oq_no]->stats; 2096 pkts += oq_stats->rx_pkts_received; 2097 drop += (oq_stats->rx_dropped + 2098 oq_stats->dropped_nodispatch + 2099 oq_stats->dropped_toomany + 2100 oq_stats->dropped_nomem); 2101 bytes += oq_stats->rx_bytes_received; 2102 } 2103 2104 lstats->rx_bytes = bytes; 2105 lstats->rx_packets = pkts; 2106 lstats->rx_dropped = drop; 2107 2108 lstats->multicast = oct->link_stats.fromwire.fw_total_mcast; 2109 lstats->collisions = oct->link_stats.fromhost.total_collisions; 2110 2111 /* detailed rx_errors: */ 2112 lstats->rx_length_errors = oct->link_stats.fromwire.l2_err; 2113 /* recved pkt with crc error */ 2114 lstats->rx_crc_errors = oct->link_stats.fromwire.fcs_err; 2115 /* recv'd frame alignment error */ 2116 lstats->rx_frame_errors = oct->link_stats.fromwire.frame_err; 2117 /* recv'r fifo overrun */ 2118 lstats->rx_fifo_errors = oct->link_stats.fromwire.fifo_err; 2119 2120 lstats->rx_errors = lstats->rx_length_errors + lstats->rx_crc_errors + 2121 lstats->rx_frame_errors + lstats->rx_fifo_errors; 2122 2123 /* detailed tx_errors */ 2124 lstats->tx_aborted_errors = oct->link_stats.fromhost.fw_err_pko; 2125 lstats->tx_carrier_errors = oct->link_stats.fromhost.fw_err_link; 2126 lstats->tx_fifo_errors = oct->link_stats.fromhost.fifo_err; 2127 2128 lstats->tx_errors = lstats->tx_aborted_errors + 2129 lstats->tx_carrier_errors + 2130 lstats->tx_fifo_errors; 2131 } 2132 2133 /** 2134 * \brief Handler for SIOCSHWTSTAMP ioctl 2135 * @param netdev network device 2136 * @param ifr interface request 2137 * @param cmd command 2138 */ 2139 static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr) 2140 { 2141 struct hwtstamp_config conf; 2142 struct lio *lio = GET_LIO(netdev); 2143 2144 if (copy_from_user(&conf, ifr->ifr_data, sizeof(conf))) 2145 return -EFAULT; 2146 2147 if (conf.flags) 2148 return -EINVAL; 2149 2150 switch (conf.tx_type) { 2151 case HWTSTAMP_TX_ON: 2152 case HWTSTAMP_TX_OFF: 2153 break; 2154 default: 2155 return -ERANGE; 2156 } 2157 2158 switch (conf.rx_filter) { 2159 case HWTSTAMP_FILTER_NONE: 2160 break; 2161 case HWTSTAMP_FILTER_ALL: 2162 case HWTSTAMP_FILTER_SOME: 2163 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 2164 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 2165 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 2166 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 2167 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 2168 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 2169 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 2170 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 2171 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 2172 case HWTSTAMP_FILTER_PTP_V2_EVENT: 2173 case HWTSTAMP_FILTER_PTP_V2_SYNC: 2174 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 2175 case HWTSTAMP_FILTER_NTP_ALL: 2176 conf.rx_filter = HWTSTAMP_FILTER_ALL; 2177 break; 2178 default: 2179 return -ERANGE; 2180 } 2181 2182 if (conf.rx_filter == HWTSTAMP_FILTER_ALL) 2183 ifstate_set(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED); 2184 2185 else 2186 ifstate_reset(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED); 2187 2188 return copy_to_user(ifr->ifr_data, &conf, sizeof(conf)) ? -EFAULT : 0; 2189 } 2190 2191 /** 2192 * \brief ioctl handler 2193 * @param netdev network device 2194 * @param ifr interface request 2195 * @param cmd command 2196 */ 2197 static int liquidio_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) 2198 { 2199 struct lio *lio = GET_LIO(netdev); 2200 2201 switch (cmd) { 2202 case SIOCSHWTSTAMP: 2203 if (lio->oct_dev->ptp_enable) 2204 return hwtstamp_ioctl(netdev, ifr); 2205 /* fall through */ 2206 default: 2207 return -EOPNOTSUPP; 2208 } 2209 } 2210 2211 /** 2212 * \brief handle a Tx timestamp response 2213 * @param status response status 2214 * @param buf pointer to skb 2215 */ 2216 static void handle_timestamp(struct octeon_device *oct, 2217 u32 status, 2218 void *buf) 2219 { 2220 struct octnet_buf_free_info *finfo; 2221 struct octeon_soft_command *sc; 2222 struct oct_timestamp_resp *resp; 2223 struct lio *lio; 2224 struct sk_buff *skb = (struct sk_buff *)buf; 2225 2226 finfo = (struct octnet_buf_free_info *)skb->cb; 2227 lio = finfo->lio; 2228 sc = finfo->sc; 2229 oct = lio->oct_dev; 2230 resp = (struct oct_timestamp_resp *)sc->virtrptr; 2231 2232 if (status != OCTEON_REQUEST_DONE) { 2233 dev_err(&oct->pci_dev->dev, "Tx timestamp instruction failed. Status: %llx\n", 2234 CVM_CAST64(status)); 2235 resp->timestamp = 0; 2236 } 2237 2238 octeon_swap_8B_data(&resp->timestamp, 1); 2239 2240 if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS) != 0)) { 2241 struct skb_shared_hwtstamps ts; 2242 u64 ns = resp->timestamp; 2243 2244 netif_info(lio, tx_done, lio->netdev, 2245 "Got resulting SKBTX_HW_TSTAMP skb=%p ns=%016llu\n", 2246 skb, (unsigned long long)ns); 2247 ts.hwtstamp = ns_to_ktime(ns + lio->ptp_adjust); 2248 skb_tstamp_tx(skb, &ts); 2249 } 2250 2251 octeon_free_soft_command(oct, sc); 2252 tx_buffer_free(skb); 2253 } 2254 2255 /* \brief Send a data packet that will be timestamped 2256 * @param oct octeon device 2257 * @param ndata pointer to network data 2258 * @param finfo pointer to private network data 2259 */ 2260 static inline int send_nic_timestamp_pkt(struct octeon_device *oct, 2261 struct octnic_data_pkt *ndata, 2262 struct octnet_buf_free_info *finfo, 2263 int xmit_more) 2264 { 2265 int retval; 2266 struct octeon_soft_command *sc; 2267 struct lio *lio; 2268 int ring_doorbell; 2269 u32 len; 2270 2271 lio = finfo->lio; 2272 2273 sc = octeon_alloc_soft_command_resp(oct, &ndata->cmd, 2274 sizeof(struct oct_timestamp_resp)); 2275 finfo->sc = sc; 2276 2277 if (!sc) { 2278 dev_err(&oct->pci_dev->dev, "No memory for timestamped data packet\n"); 2279 return IQ_SEND_FAILED; 2280 } 2281 2282 if (ndata->reqtype == REQTYPE_NORESP_NET) 2283 ndata->reqtype = REQTYPE_RESP_NET; 2284 else if (ndata->reqtype == REQTYPE_NORESP_NET_SG) 2285 ndata->reqtype = REQTYPE_RESP_NET_SG; 2286 2287 sc->callback = handle_timestamp; 2288 sc->callback_arg = finfo->skb; 2289 sc->iq_no = ndata->q_no; 2290 2291 if (OCTEON_CN23XX_PF(oct)) 2292 len = (u32)((struct octeon_instr_ih3 *) 2293 (&sc->cmd.cmd3.ih3))->dlengsz; 2294 else 2295 len = (u32)((struct octeon_instr_ih2 *) 2296 (&sc->cmd.cmd2.ih2))->dlengsz; 2297 2298 ring_doorbell = !xmit_more; 2299 2300 retval = octeon_send_command(oct, sc->iq_no, ring_doorbell, &sc->cmd, 2301 sc, len, ndata->reqtype); 2302 2303 if (retval == IQ_SEND_FAILED) { 2304 dev_err(&oct->pci_dev->dev, "timestamp data packet failed status: %x\n", 2305 retval); 2306 octeon_free_soft_command(oct, sc); 2307 } else { 2308 netif_info(lio, tx_queued, lio->netdev, "Queued timestamp packet\n"); 2309 } 2310 2311 return retval; 2312 } 2313 2314 /** \brief Transmit networks packets to the Octeon interface 2315 * @param skbuff skbuff struct to be passed to network layer. 2316 * @param netdev pointer to network device 2317 * @returns whether the packet was transmitted to the device okay or not 2318 * (NETDEV_TX_OK or NETDEV_TX_BUSY) 2319 */ 2320 static netdev_tx_t liquidio_xmit(struct sk_buff *skb, struct net_device *netdev) 2321 { 2322 struct lio *lio; 2323 struct octnet_buf_free_info *finfo; 2324 union octnic_cmd_setup cmdsetup; 2325 struct octnic_data_pkt ndata; 2326 struct octeon_device *oct; 2327 struct oct_iq_stats *stats; 2328 struct octeon_instr_irh *irh; 2329 union tx_info *tx_info; 2330 int status = 0; 2331 int q_idx = 0, iq_no = 0; 2332 int j, xmit_more = 0; 2333 u64 dptr = 0; 2334 u32 tag = 0; 2335 2336 lio = GET_LIO(netdev); 2337 oct = lio->oct_dev; 2338 2339 q_idx = skb_iq(oct, skb); 2340 tag = q_idx; 2341 iq_no = lio->linfo.txpciq[q_idx].s.q_no; 2342 2343 stats = &oct->instr_queue[iq_no]->stats; 2344 2345 /* Check for all conditions in which the current packet cannot be 2346 * transmitted. 2347 */ 2348 if (!(atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING) || 2349 (!lio->linfo.link.s.link_up) || 2350 (skb->len <= 0)) { 2351 netif_info(lio, tx_err, lio->netdev, 2352 "Transmit failed link_status : %d\n", 2353 lio->linfo.link.s.link_up); 2354 goto lio_xmit_failed; 2355 } 2356 2357 /* Use space in skb->cb to store info used to unmap and 2358 * free the buffers. 2359 */ 2360 finfo = (struct octnet_buf_free_info *)skb->cb; 2361 finfo->lio = lio; 2362 finfo->skb = skb; 2363 finfo->sc = NULL; 2364 2365 /* Prepare the attributes for the data to be passed to OSI. */ 2366 memset(&ndata, 0, sizeof(struct octnic_data_pkt)); 2367 2368 ndata.buf = (void *)finfo; 2369 2370 ndata.q_no = iq_no; 2371 2372 if (octnet_iq_is_full(oct, ndata.q_no)) { 2373 /* defer sending if queue is full */ 2374 netif_info(lio, tx_err, lio->netdev, "Transmit failed iq:%d full\n", 2375 ndata.q_no); 2376 stats->tx_iq_busy++; 2377 return NETDEV_TX_BUSY; 2378 } 2379 2380 /* pr_info(" XMIT - valid Qs: %d, 1st Q no: %d, cpu: %d, q_no:%d\n", 2381 * lio->linfo.num_txpciq, lio->txq, cpu, ndata.q_no); 2382 */ 2383 2384 ndata.datasize = skb->len; 2385 2386 cmdsetup.u64 = 0; 2387 cmdsetup.s.iq_no = iq_no; 2388 2389 if (skb->ip_summed == CHECKSUM_PARTIAL) { 2390 if (skb->encapsulation) { 2391 cmdsetup.s.tnl_csum = 1; 2392 stats->tx_vxlan++; 2393 } else { 2394 cmdsetup.s.transport_csum = 1; 2395 } 2396 } 2397 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { 2398 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 2399 cmdsetup.s.timestamp = 1; 2400 } 2401 2402 if (skb_shinfo(skb)->nr_frags == 0) { 2403 cmdsetup.s.u.datasize = skb->len; 2404 octnet_prepare_pci_cmd(oct, &ndata.cmd, &cmdsetup, tag); 2405 2406 /* Offload checksum calculation for TCP/UDP packets */ 2407 dptr = dma_map_single(&oct->pci_dev->dev, 2408 skb->data, 2409 skb->len, 2410 DMA_TO_DEVICE); 2411 if (dma_mapping_error(&oct->pci_dev->dev, dptr)) { 2412 dev_err(&oct->pci_dev->dev, "%s DMA mapping error 1\n", 2413 __func__); 2414 stats->tx_dmamap_fail++; 2415 return NETDEV_TX_BUSY; 2416 } 2417 2418 if (OCTEON_CN23XX_PF(oct)) 2419 ndata.cmd.cmd3.dptr = dptr; 2420 else 2421 ndata.cmd.cmd2.dptr = dptr; 2422 finfo->dptr = dptr; 2423 ndata.reqtype = REQTYPE_NORESP_NET; 2424 2425 } else { 2426 int i, frags; 2427 skb_frag_t *frag; 2428 struct octnic_gather *g; 2429 2430 spin_lock(&lio->glist_lock[q_idx]); 2431 g = (struct octnic_gather *) 2432 lio_list_delete_head(&lio->glist[q_idx]); 2433 spin_unlock(&lio->glist_lock[q_idx]); 2434 2435 if (!g) { 2436 netif_info(lio, tx_err, lio->netdev, 2437 "Transmit scatter gather: glist null!\n"); 2438 goto lio_xmit_failed; 2439 } 2440 2441 cmdsetup.s.gather = 1; 2442 cmdsetup.s.u.gatherptrs = (skb_shinfo(skb)->nr_frags + 1); 2443 octnet_prepare_pci_cmd(oct, &ndata.cmd, &cmdsetup, tag); 2444 2445 memset(g->sg, 0, g->sg_size); 2446 2447 g->sg[0].ptr[0] = dma_map_single(&oct->pci_dev->dev, 2448 skb->data, 2449 (skb->len - skb->data_len), 2450 DMA_TO_DEVICE); 2451 if (dma_mapping_error(&oct->pci_dev->dev, g->sg[0].ptr[0])) { 2452 dev_err(&oct->pci_dev->dev, "%s DMA mapping error 2\n", 2453 __func__); 2454 stats->tx_dmamap_fail++; 2455 return NETDEV_TX_BUSY; 2456 } 2457 add_sg_size(&g->sg[0], (skb->len - skb->data_len), 0); 2458 2459 frags = skb_shinfo(skb)->nr_frags; 2460 i = 1; 2461 while (frags--) { 2462 frag = &skb_shinfo(skb)->frags[i - 1]; 2463 2464 g->sg[(i >> 2)].ptr[(i & 3)] = 2465 skb_frag_dma_map(&oct->pci_dev->dev, 2466 frag, 0, skb_frag_size(frag), 2467 DMA_TO_DEVICE); 2468 2469 if (dma_mapping_error(&oct->pci_dev->dev, 2470 g->sg[i >> 2].ptr[i & 3])) { 2471 dma_unmap_single(&oct->pci_dev->dev, 2472 g->sg[0].ptr[0], 2473 skb->len - skb->data_len, 2474 DMA_TO_DEVICE); 2475 for (j = 1; j < i; j++) { 2476 frag = &skb_shinfo(skb)->frags[j - 1]; 2477 dma_unmap_page(&oct->pci_dev->dev, 2478 g->sg[j >> 2].ptr[j & 3], 2479 skb_frag_size(frag), 2480 DMA_TO_DEVICE); 2481 } 2482 dev_err(&oct->pci_dev->dev, "%s DMA mapping error 3\n", 2483 __func__); 2484 return NETDEV_TX_BUSY; 2485 } 2486 2487 add_sg_size(&g->sg[(i >> 2)], skb_frag_size(frag), 2488 (i & 3)); 2489 i++; 2490 } 2491 2492 dptr = g->sg_dma_ptr; 2493 2494 if (OCTEON_CN23XX_PF(oct)) 2495 ndata.cmd.cmd3.dptr = dptr; 2496 else 2497 ndata.cmd.cmd2.dptr = dptr; 2498 finfo->dptr = dptr; 2499 finfo->g = g; 2500 2501 ndata.reqtype = REQTYPE_NORESP_NET_SG; 2502 } 2503 2504 if (OCTEON_CN23XX_PF(oct)) { 2505 irh = (struct octeon_instr_irh *)&ndata.cmd.cmd3.irh; 2506 tx_info = (union tx_info *)&ndata.cmd.cmd3.ossp[0]; 2507 } else { 2508 irh = (struct octeon_instr_irh *)&ndata.cmd.cmd2.irh; 2509 tx_info = (union tx_info *)&ndata.cmd.cmd2.ossp[0]; 2510 } 2511 2512 if (skb_shinfo(skb)->gso_size) { 2513 tx_info->s.gso_size = skb_shinfo(skb)->gso_size; 2514 tx_info->s.gso_segs = skb_shinfo(skb)->gso_segs; 2515 stats->tx_gso++; 2516 } 2517 2518 /* HW insert VLAN tag */ 2519 if (skb_vlan_tag_present(skb)) { 2520 irh->priority = skb_vlan_tag_get(skb) >> 13; 2521 irh->vlan = skb_vlan_tag_get(skb) & 0xfff; 2522 } 2523 2524 xmit_more = netdev_xmit_more(); 2525 2526 if (unlikely(cmdsetup.s.timestamp)) 2527 status = send_nic_timestamp_pkt(oct, &ndata, finfo, xmit_more); 2528 else 2529 status = octnet_send_nic_data_pkt(oct, &ndata, xmit_more); 2530 if (status == IQ_SEND_FAILED) 2531 goto lio_xmit_failed; 2532 2533 netif_info(lio, tx_queued, lio->netdev, "Transmit queued successfully\n"); 2534 2535 if (status == IQ_SEND_STOP) 2536 netif_stop_subqueue(netdev, q_idx); 2537 2538 netif_trans_update(netdev); 2539 2540 if (tx_info->s.gso_segs) 2541 stats->tx_done += tx_info->s.gso_segs; 2542 else 2543 stats->tx_done++; 2544 stats->tx_tot_bytes += ndata.datasize; 2545 2546 return NETDEV_TX_OK; 2547 2548 lio_xmit_failed: 2549 stats->tx_dropped++; 2550 netif_info(lio, tx_err, lio->netdev, "IQ%d Transmit dropped:%llu\n", 2551 iq_no, stats->tx_dropped); 2552 if (dptr) 2553 dma_unmap_single(&oct->pci_dev->dev, dptr, 2554 ndata.datasize, DMA_TO_DEVICE); 2555 2556 octeon_ring_doorbell_locked(oct, iq_no); 2557 2558 tx_buffer_free(skb); 2559 return NETDEV_TX_OK; 2560 } 2561 2562 /** \brief Network device Tx timeout 2563 * @param netdev pointer to network device 2564 */ 2565 static void liquidio_tx_timeout(struct net_device *netdev) 2566 { 2567 struct lio *lio; 2568 2569 lio = GET_LIO(netdev); 2570 2571 netif_info(lio, tx_err, lio->netdev, 2572 "Transmit timeout tx_dropped:%ld, waking up queues now!!\n", 2573 netdev->stats.tx_dropped); 2574 netif_trans_update(netdev); 2575 wake_txqs(netdev); 2576 } 2577 2578 static int liquidio_vlan_rx_add_vid(struct net_device *netdev, 2579 __be16 proto __attribute__((unused)), 2580 u16 vid) 2581 { 2582 struct lio *lio = GET_LIO(netdev); 2583 struct octeon_device *oct = lio->oct_dev; 2584 struct octnic_ctrl_pkt nctrl; 2585 int ret = 0; 2586 2587 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); 2588 2589 nctrl.ncmd.u64 = 0; 2590 nctrl.ncmd.s.cmd = OCTNET_CMD_ADD_VLAN_FILTER; 2591 nctrl.ncmd.s.param1 = vid; 2592 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; 2593 nctrl.netpndev = (u64)netdev; 2594 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion; 2595 2596 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl); 2597 if (ret) { 2598 dev_err(&oct->pci_dev->dev, "Add VLAN filter failed in core (ret: 0x%x)\n", 2599 ret); 2600 if (ret > 0) 2601 ret = -EIO; 2602 } 2603 2604 return ret; 2605 } 2606 2607 static int liquidio_vlan_rx_kill_vid(struct net_device *netdev, 2608 __be16 proto __attribute__((unused)), 2609 u16 vid) 2610 { 2611 struct lio *lio = GET_LIO(netdev); 2612 struct octeon_device *oct = lio->oct_dev; 2613 struct octnic_ctrl_pkt nctrl; 2614 int ret = 0; 2615 2616 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); 2617 2618 nctrl.ncmd.u64 = 0; 2619 nctrl.ncmd.s.cmd = OCTNET_CMD_DEL_VLAN_FILTER; 2620 nctrl.ncmd.s.param1 = vid; 2621 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; 2622 nctrl.netpndev = (u64)netdev; 2623 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion; 2624 2625 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl); 2626 if (ret) { 2627 dev_err(&oct->pci_dev->dev, "Del VLAN filter failed in core (ret: 0x%x)\n", 2628 ret); 2629 if (ret > 0) 2630 ret = -EIO; 2631 } 2632 return ret; 2633 } 2634 2635 /** Sending command to enable/disable RX checksum offload 2636 * @param netdev pointer to network device 2637 * @param command OCTNET_CMD_TNL_RX_CSUM_CTL 2638 * @param rx_cmd_bit OCTNET_CMD_RXCSUM_ENABLE/ 2639 * OCTNET_CMD_RXCSUM_DISABLE 2640 * @returns SUCCESS or FAILURE 2641 */ 2642 static int liquidio_set_rxcsum_command(struct net_device *netdev, int command, 2643 u8 rx_cmd) 2644 { 2645 struct lio *lio = GET_LIO(netdev); 2646 struct octeon_device *oct = lio->oct_dev; 2647 struct octnic_ctrl_pkt nctrl; 2648 int ret = 0; 2649 2650 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); 2651 2652 nctrl.ncmd.u64 = 0; 2653 nctrl.ncmd.s.cmd = command; 2654 nctrl.ncmd.s.param1 = rx_cmd; 2655 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; 2656 nctrl.netpndev = (u64)netdev; 2657 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion; 2658 2659 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl); 2660 if (ret) { 2661 dev_err(&oct->pci_dev->dev, 2662 "DEVFLAGS RXCSUM change failed in core(ret:0x%x)\n", 2663 ret); 2664 if (ret > 0) 2665 ret = -EIO; 2666 } 2667 return ret; 2668 } 2669 2670 /** Sending command to add/delete VxLAN UDP port to firmware 2671 * @param netdev pointer to network device 2672 * @param command OCTNET_CMD_VXLAN_PORT_CONFIG 2673 * @param vxlan_port VxLAN port to be added or deleted 2674 * @param vxlan_cmd_bit OCTNET_CMD_VXLAN_PORT_ADD, 2675 * OCTNET_CMD_VXLAN_PORT_DEL 2676 * @returns SUCCESS or FAILURE 2677 */ 2678 static int liquidio_vxlan_port_command(struct net_device *netdev, int command, 2679 u16 vxlan_port, u8 vxlan_cmd_bit) 2680 { 2681 struct lio *lio = GET_LIO(netdev); 2682 struct octeon_device *oct = lio->oct_dev; 2683 struct octnic_ctrl_pkt nctrl; 2684 int ret = 0; 2685 2686 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); 2687 2688 nctrl.ncmd.u64 = 0; 2689 nctrl.ncmd.s.cmd = command; 2690 nctrl.ncmd.s.more = vxlan_cmd_bit; 2691 nctrl.ncmd.s.param1 = vxlan_port; 2692 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; 2693 nctrl.netpndev = (u64)netdev; 2694 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion; 2695 2696 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl); 2697 if (ret) { 2698 dev_err(&oct->pci_dev->dev, 2699 "VxLAN port add/delete failed in core (ret:0x%x)\n", 2700 ret); 2701 if (ret > 0) 2702 ret = -EIO; 2703 } 2704 return ret; 2705 } 2706 2707 /** \brief Net device fix features 2708 * @param netdev pointer to network device 2709 * @param request features requested 2710 * @returns updated features list 2711 */ 2712 static netdev_features_t liquidio_fix_features(struct net_device *netdev, 2713 netdev_features_t request) 2714 { 2715 struct lio *lio = netdev_priv(netdev); 2716 2717 if ((request & NETIF_F_RXCSUM) && 2718 !(lio->dev_capability & NETIF_F_RXCSUM)) 2719 request &= ~NETIF_F_RXCSUM; 2720 2721 if ((request & NETIF_F_HW_CSUM) && 2722 !(lio->dev_capability & NETIF_F_HW_CSUM)) 2723 request &= ~NETIF_F_HW_CSUM; 2724 2725 if ((request & NETIF_F_TSO) && !(lio->dev_capability & NETIF_F_TSO)) 2726 request &= ~NETIF_F_TSO; 2727 2728 if ((request & NETIF_F_TSO6) && !(lio->dev_capability & NETIF_F_TSO6)) 2729 request &= ~NETIF_F_TSO6; 2730 2731 if ((request & NETIF_F_LRO) && !(lio->dev_capability & NETIF_F_LRO)) 2732 request &= ~NETIF_F_LRO; 2733 2734 /*Disable LRO if RXCSUM is off */ 2735 if (!(request & NETIF_F_RXCSUM) && (netdev->features & NETIF_F_LRO) && 2736 (lio->dev_capability & NETIF_F_LRO)) 2737 request &= ~NETIF_F_LRO; 2738 2739 if ((request & NETIF_F_HW_VLAN_CTAG_FILTER) && 2740 !(lio->dev_capability & NETIF_F_HW_VLAN_CTAG_FILTER)) 2741 request &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 2742 2743 return request; 2744 } 2745 2746 /** \brief Net device set features 2747 * @param netdev pointer to network device 2748 * @param features features to enable/disable 2749 */ 2750 static int liquidio_set_features(struct net_device *netdev, 2751 netdev_features_t features) 2752 { 2753 struct lio *lio = netdev_priv(netdev); 2754 2755 if ((features & NETIF_F_LRO) && 2756 (lio->dev_capability & NETIF_F_LRO) && 2757 !(netdev->features & NETIF_F_LRO)) 2758 liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE, 2759 OCTNIC_LROIPV4 | OCTNIC_LROIPV6); 2760 else if (!(features & NETIF_F_LRO) && 2761 (lio->dev_capability & NETIF_F_LRO) && 2762 (netdev->features & NETIF_F_LRO)) 2763 liquidio_set_feature(netdev, OCTNET_CMD_LRO_DISABLE, 2764 OCTNIC_LROIPV4 | OCTNIC_LROIPV6); 2765 2766 /* Sending command to firmware to enable/disable RX checksum 2767 * offload settings using ethtool 2768 */ 2769 if (!(netdev->features & NETIF_F_RXCSUM) && 2770 (lio->enc_dev_capability & NETIF_F_RXCSUM) && 2771 (features & NETIF_F_RXCSUM)) 2772 liquidio_set_rxcsum_command(netdev, 2773 OCTNET_CMD_TNL_RX_CSUM_CTL, 2774 OCTNET_CMD_RXCSUM_ENABLE); 2775 else if ((netdev->features & NETIF_F_RXCSUM) && 2776 (lio->enc_dev_capability & NETIF_F_RXCSUM) && 2777 !(features & NETIF_F_RXCSUM)) 2778 liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL, 2779 OCTNET_CMD_RXCSUM_DISABLE); 2780 2781 if ((features & NETIF_F_HW_VLAN_CTAG_FILTER) && 2782 (lio->dev_capability & NETIF_F_HW_VLAN_CTAG_FILTER) && 2783 !(netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER)) 2784 liquidio_set_feature(netdev, OCTNET_CMD_VLAN_FILTER_CTL, 2785 OCTNET_CMD_VLAN_FILTER_ENABLE); 2786 else if (!(features & NETIF_F_HW_VLAN_CTAG_FILTER) && 2787 (lio->dev_capability & NETIF_F_HW_VLAN_CTAG_FILTER) && 2788 (netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER)) 2789 liquidio_set_feature(netdev, OCTNET_CMD_VLAN_FILTER_CTL, 2790 OCTNET_CMD_VLAN_FILTER_DISABLE); 2791 2792 return 0; 2793 } 2794 2795 static void liquidio_add_vxlan_port(struct net_device *netdev, 2796 struct udp_tunnel_info *ti) 2797 { 2798 if (ti->type != UDP_TUNNEL_TYPE_VXLAN) 2799 return; 2800 2801 liquidio_vxlan_port_command(netdev, 2802 OCTNET_CMD_VXLAN_PORT_CONFIG, 2803 htons(ti->port), 2804 OCTNET_CMD_VXLAN_PORT_ADD); 2805 } 2806 2807 static void liquidio_del_vxlan_port(struct net_device *netdev, 2808 struct udp_tunnel_info *ti) 2809 { 2810 if (ti->type != UDP_TUNNEL_TYPE_VXLAN) 2811 return; 2812 2813 liquidio_vxlan_port_command(netdev, 2814 OCTNET_CMD_VXLAN_PORT_CONFIG, 2815 htons(ti->port), 2816 OCTNET_CMD_VXLAN_PORT_DEL); 2817 } 2818 2819 static int __liquidio_set_vf_mac(struct net_device *netdev, int vfidx, 2820 u8 *mac, bool is_admin_assigned) 2821 { 2822 struct lio *lio = GET_LIO(netdev); 2823 struct octeon_device *oct = lio->oct_dev; 2824 struct octnic_ctrl_pkt nctrl; 2825 int ret = 0; 2826 2827 if (!is_valid_ether_addr(mac)) 2828 return -EINVAL; 2829 2830 if (vfidx < 0 || vfidx >= oct->sriov_info.max_vfs) 2831 return -EINVAL; 2832 2833 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); 2834 2835 nctrl.ncmd.u64 = 0; 2836 nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MACADDR; 2837 /* vfidx is 0 based, but vf_num (param1) is 1 based */ 2838 nctrl.ncmd.s.param1 = vfidx + 1; 2839 nctrl.ncmd.s.more = 1; 2840 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; 2841 nctrl.netpndev = (u64)netdev; 2842 if (is_admin_assigned) { 2843 nctrl.ncmd.s.param2 = true; 2844 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion; 2845 } 2846 2847 nctrl.udd[0] = 0; 2848 /* The MAC Address is presented in network byte order. */ 2849 ether_addr_copy((u8 *)&nctrl.udd[0] + 2, mac); 2850 2851 oct->sriov_info.vf_macaddr[vfidx] = nctrl.udd[0]; 2852 2853 ret = octnet_send_nic_ctrl_pkt(oct, &nctrl); 2854 if (ret > 0) 2855 ret = -EIO; 2856 2857 return ret; 2858 } 2859 2860 static int liquidio_set_vf_mac(struct net_device *netdev, int vfidx, u8 *mac) 2861 { 2862 struct lio *lio = GET_LIO(netdev); 2863 struct octeon_device *oct = lio->oct_dev; 2864 int retval; 2865 2866 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) 2867 return -EINVAL; 2868 2869 retval = __liquidio_set_vf_mac(netdev, vfidx, mac, true); 2870 if (!retval) 2871 cn23xx_tell_vf_its_macaddr_changed(oct, vfidx, mac); 2872 2873 return retval; 2874 } 2875 2876 static int liquidio_set_vf_spoofchk(struct net_device *netdev, int vfidx, 2877 bool enable) 2878 { 2879 struct lio *lio = GET_LIO(netdev); 2880 struct octeon_device *oct = lio->oct_dev; 2881 struct octnic_ctrl_pkt nctrl; 2882 int retval; 2883 2884 if (!(oct->fw_info.app_cap_flags & LIQUIDIO_SPOOFCHK_CAP)) { 2885 netif_info(lio, drv, lio->netdev, 2886 "firmware does not support spoofchk\n"); 2887 return -EOPNOTSUPP; 2888 } 2889 2890 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) { 2891 netif_info(lio, drv, lio->netdev, "Invalid vfidx %d\n", vfidx); 2892 return -EINVAL; 2893 } 2894 2895 if (enable) { 2896 if (oct->sriov_info.vf_spoofchk[vfidx]) 2897 return 0; 2898 } else { 2899 /* Clear */ 2900 if (!oct->sriov_info.vf_spoofchk[vfidx]) 2901 return 0; 2902 } 2903 2904 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); 2905 nctrl.ncmd.s.cmdgroup = OCTNET_CMD_GROUP1; 2906 nctrl.ncmd.s.cmd = OCTNET_CMD_SET_VF_SPOOFCHK; 2907 nctrl.ncmd.s.param1 = 2908 vfidx + 1; /* vfidx is 0 based, 2909 * but vf_num (param1) is 1 based 2910 */ 2911 nctrl.ncmd.s.param2 = enable; 2912 nctrl.ncmd.s.more = 0; 2913 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; 2914 nctrl.cb_fn = NULL; 2915 2916 retval = octnet_send_nic_ctrl_pkt(oct, &nctrl); 2917 2918 if (retval) { 2919 netif_info(lio, drv, lio->netdev, 2920 "Failed to set VF %d spoofchk %s\n", vfidx, 2921 enable ? "on" : "off"); 2922 return -1; 2923 } 2924 2925 oct->sriov_info.vf_spoofchk[vfidx] = enable; 2926 netif_info(lio, drv, lio->netdev, "VF %u spoofchk is %s\n", vfidx, 2927 enable ? "on" : "off"); 2928 2929 return 0; 2930 } 2931 2932 static int liquidio_set_vf_vlan(struct net_device *netdev, int vfidx, 2933 u16 vlan, u8 qos, __be16 vlan_proto) 2934 { 2935 struct lio *lio = GET_LIO(netdev); 2936 struct octeon_device *oct = lio->oct_dev; 2937 struct octnic_ctrl_pkt nctrl; 2938 u16 vlantci; 2939 int ret = 0; 2940 2941 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) 2942 return -EINVAL; 2943 2944 if (vlan_proto != htons(ETH_P_8021Q)) 2945 return -EPROTONOSUPPORT; 2946 2947 if (vlan >= VLAN_N_VID || qos > 7) 2948 return -EINVAL; 2949 2950 if (vlan) 2951 vlantci = vlan | (u16)qos << VLAN_PRIO_SHIFT; 2952 else 2953 vlantci = 0; 2954 2955 if (oct->sriov_info.vf_vlantci[vfidx] == vlantci) 2956 return 0; 2957 2958 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); 2959 2960 if (vlan) 2961 nctrl.ncmd.s.cmd = OCTNET_CMD_ADD_VLAN_FILTER; 2962 else 2963 nctrl.ncmd.s.cmd = OCTNET_CMD_DEL_VLAN_FILTER; 2964 2965 nctrl.ncmd.s.param1 = vlantci; 2966 nctrl.ncmd.s.param2 = 2967 vfidx + 1; /* vfidx is 0 based, but vf_num (param2) is 1 based */ 2968 nctrl.ncmd.s.more = 0; 2969 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; 2970 nctrl.cb_fn = NULL; 2971 2972 ret = octnet_send_nic_ctrl_pkt(oct, &nctrl); 2973 if (ret) { 2974 if (ret > 0) 2975 ret = -EIO; 2976 return ret; 2977 } 2978 2979 oct->sriov_info.vf_vlantci[vfidx] = vlantci; 2980 2981 return ret; 2982 } 2983 2984 static int liquidio_get_vf_config(struct net_device *netdev, int vfidx, 2985 struct ifla_vf_info *ivi) 2986 { 2987 struct lio *lio = GET_LIO(netdev); 2988 struct octeon_device *oct = lio->oct_dev; 2989 u8 *macaddr; 2990 2991 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) 2992 return -EINVAL; 2993 2994 memset(ivi, 0, sizeof(struct ifla_vf_info)); 2995 2996 ivi->vf = vfidx; 2997 macaddr = 2 + (u8 *)&oct->sriov_info.vf_macaddr[vfidx]; 2998 ether_addr_copy(&ivi->mac[0], macaddr); 2999 ivi->vlan = oct->sriov_info.vf_vlantci[vfidx] & VLAN_VID_MASK; 3000 ivi->qos = oct->sriov_info.vf_vlantci[vfidx] >> VLAN_PRIO_SHIFT; 3001 if (oct->sriov_info.trusted_vf.active && 3002 oct->sriov_info.trusted_vf.id == vfidx) 3003 ivi->trusted = true; 3004 else 3005 ivi->trusted = false; 3006 ivi->linkstate = oct->sriov_info.vf_linkstate[vfidx]; 3007 ivi->spoofchk = oct->sriov_info.vf_spoofchk[vfidx]; 3008 ivi->max_tx_rate = lio->linfo.link.s.speed; 3009 ivi->min_tx_rate = 0; 3010 3011 return 0; 3012 } 3013 3014 static int liquidio_send_vf_trust_cmd(struct lio *lio, int vfidx, bool trusted) 3015 { 3016 struct octeon_device *oct = lio->oct_dev; 3017 struct octeon_soft_command *sc; 3018 int retval; 3019 3020 sc = octeon_alloc_soft_command(oct, 0, 16, 0); 3021 if (!sc) 3022 return -ENOMEM; 3023 3024 sc->iq_no = lio->linfo.txpciq[0].s.q_no; 3025 3026 /* vfidx is 0 based, but vf_num (param1) is 1 based */ 3027 octeon_prepare_soft_command(oct, sc, OPCODE_NIC, 3028 OPCODE_NIC_SET_TRUSTED_VF, 0, vfidx + 1, 3029 trusted); 3030 3031 init_completion(&sc->complete); 3032 sc->sc_status = OCTEON_REQUEST_PENDING; 3033 3034 retval = octeon_send_soft_command(oct, sc); 3035 if (retval == IQ_SEND_FAILED) { 3036 octeon_free_soft_command(oct, sc); 3037 retval = -1; 3038 } else { 3039 /* Wait for response or timeout */ 3040 retval = wait_for_sc_completion_timeout(oct, sc, 0); 3041 if (retval) 3042 return (retval); 3043 3044 WRITE_ONCE(sc->caller_is_done, true); 3045 } 3046 3047 return retval; 3048 } 3049 3050 static int liquidio_set_vf_trust(struct net_device *netdev, int vfidx, 3051 bool setting) 3052 { 3053 struct lio *lio = GET_LIO(netdev); 3054 struct octeon_device *oct = lio->oct_dev; 3055 3056 if (strcmp(oct->fw_info.liquidio_firmware_version, "1.7.1") < 0) { 3057 /* trusted vf is not supported by firmware older than 1.7.1 */ 3058 return -EOPNOTSUPP; 3059 } 3060 3061 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) { 3062 netif_info(lio, drv, lio->netdev, "Invalid vfidx %d\n", vfidx); 3063 return -EINVAL; 3064 } 3065 3066 if (setting) { 3067 /* Set */ 3068 3069 if (oct->sriov_info.trusted_vf.active && 3070 oct->sriov_info.trusted_vf.id == vfidx) 3071 return 0; 3072 3073 if (oct->sriov_info.trusted_vf.active) { 3074 netif_info(lio, drv, lio->netdev, "More than one trusted VF is not allowed\n"); 3075 return -EPERM; 3076 } 3077 } else { 3078 /* Clear */ 3079 3080 if (!oct->sriov_info.trusted_vf.active) 3081 return 0; 3082 } 3083 3084 if (!liquidio_send_vf_trust_cmd(lio, vfidx, setting)) { 3085 if (setting) { 3086 oct->sriov_info.trusted_vf.id = vfidx; 3087 oct->sriov_info.trusted_vf.active = true; 3088 } else { 3089 oct->sriov_info.trusted_vf.active = false; 3090 } 3091 3092 netif_info(lio, drv, lio->netdev, "VF %u is %strusted\n", vfidx, 3093 setting ? "" : "not "); 3094 } else { 3095 netif_info(lio, drv, lio->netdev, "Failed to set VF trusted\n"); 3096 return -1; 3097 } 3098 3099 return 0; 3100 } 3101 3102 static int liquidio_set_vf_link_state(struct net_device *netdev, int vfidx, 3103 int linkstate) 3104 { 3105 struct lio *lio = GET_LIO(netdev); 3106 struct octeon_device *oct = lio->oct_dev; 3107 struct octnic_ctrl_pkt nctrl; 3108 int ret = 0; 3109 3110 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) 3111 return -EINVAL; 3112 3113 if (oct->sriov_info.vf_linkstate[vfidx] == linkstate) 3114 return 0; 3115 3116 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); 3117 nctrl.ncmd.s.cmd = OCTNET_CMD_SET_VF_LINKSTATE; 3118 nctrl.ncmd.s.param1 = 3119 vfidx + 1; /* vfidx is 0 based, but vf_num (param1) is 1 based */ 3120 nctrl.ncmd.s.param2 = linkstate; 3121 nctrl.ncmd.s.more = 0; 3122 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no; 3123 nctrl.cb_fn = NULL; 3124 3125 ret = octnet_send_nic_ctrl_pkt(oct, &nctrl); 3126 3127 if (!ret) 3128 oct->sriov_info.vf_linkstate[vfidx] = linkstate; 3129 else if (ret > 0) 3130 ret = -EIO; 3131 3132 return ret; 3133 } 3134 3135 static int 3136 liquidio_eswitch_mode_get(struct devlink *devlink, u16 *mode) 3137 { 3138 struct lio_devlink_priv *priv; 3139 struct octeon_device *oct; 3140 3141 priv = devlink_priv(devlink); 3142 oct = priv->oct; 3143 3144 *mode = oct->eswitch_mode; 3145 3146 return 0; 3147 } 3148 3149 static int 3150 liquidio_eswitch_mode_set(struct devlink *devlink, u16 mode, 3151 struct netlink_ext_ack *extack) 3152 { 3153 struct lio_devlink_priv *priv; 3154 struct octeon_device *oct; 3155 int ret = 0; 3156 3157 priv = devlink_priv(devlink); 3158 oct = priv->oct; 3159 3160 if (!(oct->fw_info.app_cap_flags & LIQUIDIO_SWITCHDEV_CAP)) 3161 return -EINVAL; 3162 3163 if (oct->eswitch_mode == mode) 3164 return 0; 3165 3166 switch (mode) { 3167 case DEVLINK_ESWITCH_MODE_SWITCHDEV: 3168 oct->eswitch_mode = mode; 3169 ret = lio_vf_rep_create(oct); 3170 break; 3171 3172 case DEVLINK_ESWITCH_MODE_LEGACY: 3173 lio_vf_rep_destroy(oct); 3174 oct->eswitch_mode = mode; 3175 break; 3176 3177 default: 3178 ret = -EINVAL; 3179 } 3180 3181 return ret; 3182 } 3183 3184 static const struct devlink_ops liquidio_devlink_ops = { 3185 .eswitch_mode_get = liquidio_eswitch_mode_get, 3186 .eswitch_mode_set = liquidio_eswitch_mode_set, 3187 }; 3188 3189 static int 3190 liquidio_get_port_parent_id(struct net_device *dev, 3191 struct netdev_phys_item_id *ppid) 3192 { 3193 struct lio *lio = GET_LIO(dev); 3194 struct octeon_device *oct = lio->oct_dev; 3195 3196 if (oct->eswitch_mode != DEVLINK_ESWITCH_MODE_SWITCHDEV) 3197 return -EOPNOTSUPP; 3198 3199 ppid->id_len = ETH_ALEN; 3200 ether_addr_copy(ppid->id, (void *)&lio->linfo.hw_addr + 2); 3201 3202 return 0; 3203 } 3204 3205 static int liquidio_get_vf_stats(struct net_device *netdev, int vfidx, 3206 struct ifla_vf_stats *vf_stats) 3207 { 3208 struct lio *lio = GET_LIO(netdev); 3209 struct octeon_device *oct = lio->oct_dev; 3210 struct oct_vf_stats stats; 3211 int ret; 3212 3213 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) 3214 return -EINVAL; 3215 3216 memset(&stats, 0, sizeof(struct oct_vf_stats)); 3217 ret = cn23xx_get_vf_stats(oct, vfidx, &stats); 3218 if (!ret) { 3219 vf_stats->rx_packets = stats.rx_packets; 3220 vf_stats->tx_packets = stats.tx_packets; 3221 vf_stats->rx_bytes = stats.rx_bytes; 3222 vf_stats->tx_bytes = stats.tx_bytes; 3223 vf_stats->broadcast = stats.broadcast; 3224 vf_stats->multicast = stats.multicast; 3225 } 3226 3227 return ret; 3228 } 3229 3230 static const struct net_device_ops lionetdevops = { 3231 .ndo_open = liquidio_open, 3232 .ndo_stop = liquidio_stop, 3233 .ndo_start_xmit = liquidio_xmit, 3234 .ndo_get_stats64 = liquidio_get_stats64, 3235 .ndo_set_mac_address = liquidio_set_mac, 3236 .ndo_set_rx_mode = liquidio_set_mcast_list, 3237 .ndo_tx_timeout = liquidio_tx_timeout, 3238 3239 .ndo_vlan_rx_add_vid = liquidio_vlan_rx_add_vid, 3240 .ndo_vlan_rx_kill_vid = liquidio_vlan_rx_kill_vid, 3241 .ndo_change_mtu = liquidio_change_mtu, 3242 .ndo_do_ioctl = liquidio_ioctl, 3243 .ndo_fix_features = liquidio_fix_features, 3244 .ndo_set_features = liquidio_set_features, 3245 .ndo_udp_tunnel_add = liquidio_add_vxlan_port, 3246 .ndo_udp_tunnel_del = liquidio_del_vxlan_port, 3247 .ndo_set_vf_mac = liquidio_set_vf_mac, 3248 .ndo_set_vf_vlan = liquidio_set_vf_vlan, 3249 .ndo_get_vf_config = liquidio_get_vf_config, 3250 .ndo_set_vf_spoofchk = liquidio_set_vf_spoofchk, 3251 .ndo_set_vf_trust = liquidio_set_vf_trust, 3252 .ndo_set_vf_link_state = liquidio_set_vf_link_state, 3253 .ndo_get_vf_stats = liquidio_get_vf_stats, 3254 .ndo_get_port_parent_id = liquidio_get_port_parent_id, 3255 }; 3256 3257 /** \brief Entry point for the liquidio module 3258 */ 3259 static int __init liquidio_init(void) 3260 { 3261 int i; 3262 struct handshake *hs; 3263 3264 init_completion(&first_stage); 3265 3266 octeon_init_device_list(OCTEON_CONFIG_TYPE_DEFAULT); 3267 3268 if (liquidio_init_pci()) 3269 return -EINVAL; 3270 3271 wait_for_completion_timeout(&first_stage, msecs_to_jiffies(1000)); 3272 3273 for (i = 0; i < MAX_OCTEON_DEVICES; i++) { 3274 hs = &handshake[i]; 3275 if (hs->pci_dev) { 3276 wait_for_completion(&hs->init); 3277 if (!hs->init_ok) { 3278 /* init handshake failed */ 3279 dev_err(&hs->pci_dev->dev, 3280 "Failed to init device\n"); 3281 liquidio_deinit_pci(); 3282 return -EIO; 3283 } 3284 } 3285 } 3286 3287 for (i = 0; i < MAX_OCTEON_DEVICES; i++) { 3288 hs = &handshake[i]; 3289 if (hs->pci_dev) { 3290 wait_for_completion_timeout(&hs->started, 3291 msecs_to_jiffies(30000)); 3292 if (!hs->started_ok) { 3293 /* starter handshake failed */ 3294 dev_err(&hs->pci_dev->dev, 3295 "Firmware failed to start\n"); 3296 liquidio_deinit_pci(); 3297 return -EIO; 3298 } 3299 } 3300 } 3301 3302 return 0; 3303 } 3304 3305 static int lio_nic_info(struct octeon_recv_info *recv_info, void *buf) 3306 { 3307 struct octeon_device *oct = (struct octeon_device *)buf; 3308 struct octeon_recv_pkt *recv_pkt = recv_info->recv_pkt; 3309 int gmxport = 0; 3310 union oct_link_status *ls; 3311 int i; 3312 3313 if (recv_pkt->buffer_size[0] != (sizeof(*ls) + OCT_DROQ_INFO_SIZE)) { 3314 dev_err(&oct->pci_dev->dev, "Malformed NIC_INFO, len=%d, ifidx=%d\n", 3315 recv_pkt->buffer_size[0], 3316 recv_pkt->rh.r_nic_info.gmxport); 3317 goto nic_info_err; 3318 } 3319 3320 gmxport = recv_pkt->rh.r_nic_info.gmxport; 3321 ls = (union oct_link_status *)(get_rbd(recv_pkt->buffer_ptr[0]) + 3322 OCT_DROQ_INFO_SIZE); 3323 3324 octeon_swap_8B_data((u64 *)ls, (sizeof(union oct_link_status)) >> 3); 3325 for (i = 0; i < oct->ifcount; i++) { 3326 if (oct->props[i].gmxport == gmxport) { 3327 update_link_status(oct->props[i].netdev, ls); 3328 break; 3329 } 3330 } 3331 3332 nic_info_err: 3333 for (i = 0; i < recv_pkt->buffer_count; i++) 3334 recv_buffer_free(recv_pkt->buffer_ptr[i]); 3335 octeon_free_recv_info(recv_info); 3336 return 0; 3337 } 3338 3339 /** 3340 * \brief Setup network interfaces 3341 * @param octeon_dev octeon device 3342 * 3343 * Called during init time for each device. It assumes the NIC 3344 * is already up and running. The link information for each 3345 * interface is passed in link_info. 3346 */ 3347 static int setup_nic_devices(struct octeon_device *octeon_dev) 3348 { 3349 struct lio *lio = NULL; 3350 struct net_device *netdev; 3351 u8 mac[6], i, j, *fw_ver, *micro_ver; 3352 unsigned long micro; 3353 u32 cur_ver; 3354 struct octeon_soft_command *sc; 3355 struct liquidio_if_cfg_resp *resp; 3356 struct octdev_props *props; 3357 int retval, num_iqueues, num_oqueues; 3358 int max_num_queues = 0; 3359 union oct_nic_if_cfg if_cfg; 3360 unsigned int base_queue; 3361 unsigned int gmx_port_id; 3362 u32 resp_size, data_size; 3363 u32 ifidx_or_pfnum; 3364 struct lio_version *vdata; 3365 struct devlink *devlink; 3366 struct lio_devlink_priv *lio_devlink; 3367 3368 /* This is to handle link status changes */ 3369 octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC, 3370 OPCODE_NIC_INFO, 3371 lio_nic_info, octeon_dev); 3372 3373 /* REQTYPE_RESP_NET and REQTYPE_SOFT_COMMAND do not have free functions. 3374 * They are handled directly. 3375 */ 3376 octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET, 3377 free_netbuf); 3378 3379 octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET_SG, 3380 free_netsgbuf); 3381 3382 octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_RESP_NET_SG, 3383 free_netsgbuf_with_resp); 3384 3385 for (i = 0; i < octeon_dev->ifcount; i++) { 3386 resp_size = sizeof(struct liquidio_if_cfg_resp); 3387 data_size = sizeof(struct lio_version); 3388 sc = (struct octeon_soft_command *) 3389 octeon_alloc_soft_command(octeon_dev, data_size, 3390 resp_size, 0); 3391 resp = (struct liquidio_if_cfg_resp *)sc->virtrptr; 3392 vdata = (struct lio_version *)sc->virtdptr; 3393 3394 *((u64 *)vdata) = 0; 3395 vdata->major = cpu_to_be16(LIQUIDIO_BASE_MAJOR_VERSION); 3396 vdata->minor = cpu_to_be16(LIQUIDIO_BASE_MINOR_VERSION); 3397 vdata->micro = cpu_to_be16(LIQUIDIO_BASE_MICRO_VERSION); 3398 3399 if (OCTEON_CN23XX_PF(octeon_dev)) { 3400 num_iqueues = octeon_dev->sriov_info.num_pf_rings; 3401 num_oqueues = octeon_dev->sriov_info.num_pf_rings; 3402 base_queue = octeon_dev->sriov_info.pf_srn; 3403 3404 gmx_port_id = octeon_dev->pf_num; 3405 ifidx_or_pfnum = octeon_dev->pf_num; 3406 } else { 3407 num_iqueues = CFG_GET_NUM_TXQS_NIC_IF( 3408 octeon_get_conf(octeon_dev), i); 3409 num_oqueues = CFG_GET_NUM_RXQS_NIC_IF( 3410 octeon_get_conf(octeon_dev), i); 3411 base_queue = CFG_GET_BASE_QUE_NIC_IF( 3412 octeon_get_conf(octeon_dev), i); 3413 gmx_port_id = CFG_GET_GMXID_NIC_IF( 3414 octeon_get_conf(octeon_dev), i); 3415 ifidx_or_pfnum = i; 3416 } 3417 3418 dev_dbg(&octeon_dev->pci_dev->dev, 3419 "requesting config for interface %d, iqs %d, oqs %d\n", 3420 ifidx_or_pfnum, num_iqueues, num_oqueues); 3421 3422 if_cfg.u64 = 0; 3423 if_cfg.s.num_iqueues = num_iqueues; 3424 if_cfg.s.num_oqueues = num_oqueues; 3425 if_cfg.s.base_queue = base_queue; 3426 if_cfg.s.gmx_port_id = gmx_port_id; 3427 3428 sc->iq_no = 0; 3429 3430 octeon_prepare_soft_command(octeon_dev, sc, OPCODE_NIC, 3431 OPCODE_NIC_IF_CFG, 0, 3432 if_cfg.u64, 0); 3433 3434 init_completion(&sc->complete); 3435 sc->sc_status = OCTEON_REQUEST_PENDING; 3436 3437 retval = octeon_send_soft_command(octeon_dev, sc); 3438 if (retval == IQ_SEND_FAILED) { 3439 dev_err(&octeon_dev->pci_dev->dev, 3440 "iq/oq config failed status: %x\n", 3441 retval); 3442 /* Soft instr is freed by driver in case of failure. */ 3443 octeon_free_soft_command(octeon_dev, sc); 3444 return(-EIO); 3445 } 3446 3447 /* Sleep on a wait queue till the cond flag indicates that the 3448 * response arrived or timed-out. 3449 */ 3450 retval = wait_for_sc_completion_timeout(octeon_dev, sc, 0); 3451 if (retval) 3452 return retval; 3453 3454 retval = resp->status; 3455 if (retval) { 3456 dev_err(&octeon_dev->pci_dev->dev, "iq/oq config failed\n"); 3457 WRITE_ONCE(sc->caller_is_done, true); 3458 goto setup_nic_dev_done; 3459 } 3460 snprintf(octeon_dev->fw_info.liquidio_firmware_version, 3461 32, "%s", 3462 resp->cfg_info.liquidio_firmware_version); 3463 3464 /* Verify f/w version (in case of 'auto' loading from flash) */ 3465 fw_ver = octeon_dev->fw_info.liquidio_firmware_version; 3466 if (memcmp(LIQUIDIO_BASE_VERSION, 3467 fw_ver, 3468 strlen(LIQUIDIO_BASE_VERSION))) { 3469 dev_err(&octeon_dev->pci_dev->dev, 3470 "Unmatched firmware version. Expected %s.x, got %s.\n", 3471 LIQUIDIO_BASE_VERSION, fw_ver); 3472 WRITE_ONCE(sc->caller_is_done, true); 3473 goto setup_nic_dev_done; 3474 } else if (atomic_read(octeon_dev->adapter_fw_state) == 3475 FW_IS_PRELOADED) { 3476 dev_info(&octeon_dev->pci_dev->dev, 3477 "Using auto-loaded firmware version %s.\n", 3478 fw_ver); 3479 } 3480 3481 /* extract micro version field; point past '<maj>.<min>.' */ 3482 micro_ver = fw_ver + strlen(LIQUIDIO_BASE_VERSION) + 1; 3483 if (kstrtoul(micro_ver, 10, µ) != 0) 3484 micro = 0; 3485 octeon_dev->fw_info.ver.maj = LIQUIDIO_BASE_MAJOR_VERSION; 3486 octeon_dev->fw_info.ver.min = LIQUIDIO_BASE_MINOR_VERSION; 3487 octeon_dev->fw_info.ver.rev = micro; 3488 3489 octeon_swap_8B_data((u64 *)(&resp->cfg_info), 3490 (sizeof(struct liquidio_if_cfg_info)) >> 3); 3491 3492 num_iqueues = hweight64(resp->cfg_info.iqmask); 3493 num_oqueues = hweight64(resp->cfg_info.oqmask); 3494 3495 if (!(num_iqueues) || !(num_oqueues)) { 3496 dev_err(&octeon_dev->pci_dev->dev, 3497 "Got bad iqueues (%016llx) or oqueues (%016llx) from firmware.\n", 3498 resp->cfg_info.iqmask, 3499 resp->cfg_info.oqmask); 3500 WRITE_ONCE(sc->caller_is_done, true); 3501 goto setup_nic_dev_done; 3502 } 3503 3504 if (OCTEON_CN6XXX(octeon_dev)) { 3505 max_num_queues = CFG_GET_IQ_MAX_Q(CHIP_CONF(octeon_dev, 3506 cn6xxx)); 3507 } else if (OCTEON_CN23XX_PF(octeon_dev)) { 3508 max_num_queues = CFG_GET_IQ_MAX_Q(CHIP_CONF(octeon_dev, 3509 cn23xx_pf)); 3510 } 3511 3512 dev_dbg(&octeon_dev->pci_dev->dev, 3513 "interface %d, iqmask %016llx, oqmask %016llx, numiqueues %d, numoqueues %d max_num_queues: %d\n", 3514 i, resp->cfg_info.iqmask, resp->cfg_info.oqmask, 3515 num_iqueues, num_oqueues, max_num_queues); 3516 netdev = alloc_etherdev_mq(LIO_SIZE, max_num_queues); 3517 3518 if (!netdev) { 3519 dev_err(&octeon_dev->pci_dev->dev, "Device allocation failed\n"); 3520 WRITE_ONCE(sc->caller_is_done, true); 3521 goto setup_nic_dev_done; 3522 } 3523 3524 SET_NETDEV_DEV(netdev, &octeon_dev->pci_dev->dev); 3525 3526 /* Associate the routines that will handle different 3527 * netdev tasks. 3528 */ 3529 netdev->netdev_ops = &lionetdevops; 3530 3531 retval = netif_set_real_num_rx_queues(netdev, num_oqueues); 3532 if (retval) { 3533 dev_err(&octeon_dev->pci_dev->dev, 3534 "setting real number rx failed\n"); 3535 WRITE_ONCE(sc->caller_is_done, true); 3536 goto setup_nic_dev_free; 3537 } 3538 3539 retval = netif_set_real_num_tx_queues(netdev, num_iqueues); 3540 if (retval) { 3541 dev_err(&octeon_dev->pci_dev->dev, 3542 "setting real number tx failed\n"); 3543 WRITE_ONCE(sc->caller_is_done, true); 3544 goto setup_nic_dev_free; 3545 } 3546 3547 lio = GET_LIO(netdev); 3548 3549 memset(lio, 0, sizeof(struct lio)); 3550 3551 lio->ifidx = ifidx_or_pfnum; 3552 3553 props = &octeon_dev->props[i]; 3554 props->gmxport = resp->cfg_info.linfo.gmxport; 3555 props->netdev = netdev; 3556 3557 lio->linfo.num_rxpciq = num_oqueues; 3558 lio->linfo.num_txpciq = num_iqueues; 3559 for (j = 0; j < num_oqueues; j++) { 3560 lio->linfo.rxpciq[j].u64 = 3561 resp->cfg_info.linfo.rxpciq[j].u64; 3562 } 3563 for (j = 0; j < num_iqueues; j++) { 3564 lio->linfo.txpciq[j].u64 = 3565 resp->cfg_info.linfo.txpciq[j].u64; 3566 } 3567 lio->linfo.hw_addr = resp->cfg_info.linfo.hw_addr; 3568 lio->linfo.gmxport = resp->cfg_info.linfo.gmxport; 3569 lio->linfo.link.u64 = resp->cfg_info.linfo.link.u64; 3570 3571 WRITE_ONCE(sc->caller_is_done, true); 3572 3573 lio->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); 3574 3575 if (OCTEON_CN23XX_PF(octeon_dev) || 3576 OCTEON_CN6XXX(octeon_dev)) { 3577 lio->dev_capability = NETIF_F_HIGHDMA 3578 | NETIF_F_IP_CSUM 3579 | NETIF_F_IPV6_CSUM 3580 | NETIF_F_SG | NETIF_F_RXCSUM 3581 | NETIF_F_GRO 3582 | NETIF_F_TSO | NETIF_F_TSO6 3583 | NETIF_F_LRO; 3584 } 3585 netif_set_gso_max_size(netdev, OCTNIC_GSO_MAX_SIZE); 3586 3587 /* Copy of transmit encapsulation capabilities: 3588 * TSO, TSO6, Checksums for this device 3589 */ 3590 lio->enc_dev_capability = NETIF_F_IP_CSUM 3591 | NETIF_F_IPV6_CSUM 3592 | NETIF_F_GSO_UDP_TUNNEL 3593 | NETIF_F_HW_CSUM | NETIF_F_SG 3594 | NETIF_F_RXCSUM 3595 | NETIF_F_TSO | NETIF_F_TSO6 3596 | NETIF_F_LRO; 3597 3598 netdev->hw_enc_features = (lio->enc_dev_capability & 3599 ~NETIF_F_LRO); 3600 3601 lio->dev_capability |= NETIF_F_GSO_UDP_TUNNEL; 3602 3603 netdev->vlan_features = lio->dev_capability; 3604 /* Add any unchangeable hw features */ 3605 lio->dev_capability |= NETIF_F_HW_VLAN_CTAG_FILTER | 3606 NETIF_F_HW_VLAN_CTAG_RX | 3607 NETIF_F_HW_VLAN_CTAG_TX; 3608 3609 netdev->features = (lio->dev_capability & ~NETIF_F_LRO); 3610 3611 netdev->hw_features = lio->dev_capability; 3612 /*HW_VLAN_RX and HW_VLAN_FILTER is always on*/ 3613 netdev->hw_features = netdev->hw_features & 3614 ~NETIF_F_HW_VLAN_CTAG_RX; 3615 3616 /* MTU range: 68 - 16000 */ 3617 netdev->min_mtu = LIO_MIN_MTU_SIZE; 3618 netdev->max_mtu = LIO_MAX_MTU_SIZE; 3619 3620 /* Point to the properties for octeon device to which this 3621 * interface belongs. 3622 */ 3623 lio->oct_dev = octeon_dev; 3624 lio->octprops = props; 3625 lio->netdev = netdev; 3626 3627 dev_dbg(&octeon_dev->pci_dev->dev, 3628 "if%d gmx: %d hw_addr: 0x%llx\n", i, 3629 lio->linfo.gmxport, CVM_CAST64(lio->linfo.hw_addr)); 3630 3631 for (j = 0; j < octeon_dev->sriov_info.max_vfs; j++) { 3632 u8 vfmac[ETH_ALEN]; 3633 3634 eth_random_addr(vfmac); 3635 if (__liquidio_set_vf_mac(netdev, j, vfmac, false)) { 3636 dev_err(&octeon_dev->pci_dev->dev, 3637 "Error setting VF%d MAC address\n", 3638 j); 3639 goto setup_nic_dev_free; 3640 } 3641 } 3642 3643 /* 64-bit swap required on LE machines */ 3644 octeon_swap_8B_data(&lio->linfo.hw_addr, 1); 3645 for (j = 0; j < 6; j++) 3646 mac[j] = *((u8 *)(((u8 *)&lio->linfo.hw_addr) + 2 + j)); 3647 3648 /* Copy MAC Address to OS network device structure */ 3649 3650 ether_addr_copy(netdev->dev_addr, mac); 3651 3652 /* By default all interfaces on a single Octeon uses the same 3653 * tx and rx queues 3654 */ 3655 lio->txq = lio->linfo.txpciq[0].s.q_no; 3656 lio->rxq = lio->linfo.rxpciq[0].s.q_no; 3657 if (liquidio_setup_io_queues(octeon_dev, i, 3658 lio->linfo.num_txpciq, 3659 lio->linfo.num_rxpciq)) { 3660 dev_err(&octeon_dev->pci_dev->dev, "I/O queues creation failed\n"); 3661 goto setup_nic_dev_free; 3662 } 3663 3664 ifstate_set(lio, LIO_IFSTATE_DROQ_OPS); 3665 3666 lio->tx_qsize = octeon_get_tx_qsize(octeon_dev, lio->txq); 3667 lio->rx_qsize = octeon_get_rx_qsize(octeon_dev, lio->rxq); 3668 3669 if (lio_setup_glists(octeon_dev, lio, num_iqueues)) { 3670 dev_err(&octeon_dev->pci_dev->dev, 3671 "Gather list allocation failed\n"); 3672 goto setup_nic_dev_free; 3673 } 3674 3675 /* Register ethtool support */ 3676 liquidio_set_ethtool_ops(netdev); 3677 if (lio->oct_dev->chip_id == OCTEON_CN23XX_PF_VID) 3678 octeon_dev->priv_flags = OCT_PRIV_FLAG_DEFAULT; 3679 else 3680 octeon_dev->priv_flags = 0x0; 3681 3682 if (netdev->features & NETIF_F_LRO) 3683 liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE, 3684 OCTNIC_LROIPV4 | OCTNIC_LROIPV6); 3685 3686 liquidio_set_feature(netdev, OCTNET_CMD_VLAN_FILTER_CTL, 3687 OCTNET_CMD_VLAN_FILTER_ENABLE); 3688 3689 if ((debug != -1) && (debug & NETIF_MSG_HW)) 3690 liquidio_set_feature(netdev, 3691 OCTNET_CMD_VERBOSE_ENABLE, 0); 3692 3693 if (setup_link_status_change_wq(netdev)) 3694 goto setup_nic_dev_free; 3695 3696 if ((octeon_dev->fw_info.app_cap_flags & 3697 LIQUIDIO_TIME_SYNC_CAP) && 3698 setup_sync_octeon_time_wq(netdev)) 3699 goto setup_nic_dev_free; 3700 3701 if (setup_rx_oom_poll_fn(netdev)) 3702 goto setup_nic_dev_free; 3703 3704 /* Register the network device with the OS */ 3705 if (register_netdev(netdev)) { 3706 dev_err(&octeon_dev->pci_dev->dev, "Device registration failed\n"); 3707 goto setup_nic_dev_free; 3708 } 3709 3710 dev_dbg(&octeon_dev->pci_dev->dev, 3711 "Setup NIC ifidx:%d mac:%02x%02x%02x%02x%02x%02x\n", 3712 i, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); 3713 netif_carrier_off(netdev); 3714 lio->link_changes++; 3715 3716 ifstate_set(lio, LIO_IFSTATE_REGISTERED); 3717 3718 /* Sending command to firmware to enable Rx checksum offload 3719 * by default at the time of setup of Liquidio driver for 3720 * this device 3721 */ 3722 liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL, 3723 OCTNET_CMD_RXCSUM_ENABLE); 3724 liquidio_set_feature(netdev, OCTNET_CMD_TNL_TX_CSUM_CTL, 3725 OCTNET_CMD_TXCSUM_ENABLE); 3726 3727 dev_dbg(&octeon_dev->pci_dev->dev, 3728 "NIC ifidx:%d Setup successful\n", i); 3729 3730 if (octeon_dev->subsystem_id == 3731 OCTEON_CN2350_25GB_SUBSYS_ID || 3732 octeon_dev->subsystem_id == 3733 OCTEON_CN2360_25GB_SUBSYS_ID) { 3734 cur_ver = OCT_FW_VER(octeon_dev->fw_info.ver.maj, 3735 octeon_dev->fw_info.ver.min, 3736 octeon_dev->fw_info.ver.rev); 3737 3738 /* speed control unsupported in f/w older than 1.7.2 */ 3739 if (cur_ver < OCT_FW_VER(1, 7, 2)) { 3740 dev_info(&octeon_dev->pci_dev->dev, 3741 "speed setting not supported by f/w."); 3742 octeon_dev->speed_setting = 25; 3743 octeon_dev->no_speed_setting = 1; 3744 } else { 3745 liquidio_get_speed(lio); 3746 } 3747 3748 if (octeon_dev->speed_setting == 0) { 3749 octeon_dev->speed_setting = 25; 3750 octeon_dev->no_speed_setting = 1; 3751 } 3752 } else { 3753 octeon_dev->no_speed_setting = 1; 3754 octeon_dev->speed_setting = 10; 3755 } 3756 octeon_dev->speed_boot = octeon_dev->speed_setting; 3757 3758 /* don't read FEC setting if unsupported by f/w (see above) */ 3759 if (octeon_dev->speed_boot == 25 && 3760 !octeon_dev->no_speed_setting) { 3761 liquidio_get_fec(lio); 3762 octeon_dev->props[lio->ifidx].fec_boot = 3763 octeon_dev->props[lio->ifidx].fec; 3764 } 3765 } 3766 3767 devlink = devlink_alloc(&liquidio_devlink_ops, 3768 sizeof(struct lio_devlink_priv)); 3769 if (!devlink) { 3770 dev_err(&octeon_dev->pci_dev->dev, "devlink alloc failed\n"); 3771 goto setup_nic_dev_free; 3772 } 3773 3774 lio_devlink = devlink_priv(devlink); 3775 lio_devlink->oct = octeon_dev; 3776 3777 if (devlink_register(devlink, &octeon_dev->pci_dev->dev)) { 3778 devlink_free(devlink); 3779 dev_err(&octeon_dev->pci_dev->dev, 3780 "devlink registration failed\n"); 3781 goto setup_nic_dev_free; 3782 } 3783 3784 octeon_dev->devlink = devlink; 3785 octeon_dev->eswitch_mode = DEVLINK_ESWITCH_MODE_LEGACY; 3786 3787 return 0; 3788 3789 setup_nic_dev_free: 3790 3791 while (i--) { 3792 dev_err(&octeon_dev->pci_dev->dev, 3793 "NIC ifidx:%d Setup failed\n", i); 3794 liquidio_destroy_nic_device(octeon_dev, i); 3795 } 3796 3797 setup_nic_dev_done: 3798 3799 return -ENODEV; 3800 } 3801 3802 #ifdef CONFIG_PCI_IOV 3803 static int octeon_enable_sriov(struct octeon_device *oct) 3804 { 3805 unsigned int num_vfs_alloced = oct->sriov_info.num_vfs_alloced; 3806 struct pci_dev *vfdev; 3807 int err; 3808 u32 u; 3809 3810 if (OCTEON_CN23XX_PF(oct) && num_vfs_alloced) { 3811 err = pci_enable_sriov(oct->pci_dev, 3812 oct->sriov_info.num_vfs_alloced); 3813 if (err) { 3814 dev_err(&oct->pci_dev->dev, 3815 "OCTEON: Failed to enable PCI sriov: %d\n", 3816 err); 3817 oct->sriov_info.num_vfs_alloced = 0; 3818 return err; 3819 } 3820 oct->sriov_info.sriov_enabled = 1; 3821 3822 /* init lookup table that maps DPI ring number to VF pci_dev 3823 * struct pointer 3824 */ 3825 u = 0; 3826 vfdev = pci_get_device(PCI_VENDOR_ID_CAVIUM, 3827 OCTEON_CN23XX_VF_VID, NULL); 3828 while (vfdev) { 3829 if (vfdev->is_virtfn && 3830 (vfdev->physfn == oct->pci_dev)) { 3831 oct->sriov_info.dpiring_to_vfpcidev_lut[u] = 3832 vfdev; 3833 u += oct->sriov_info.rings_per_vf; 3834 } 3835 vfdev = pci_get_device(PCI_VENDOR_ID_CAVIUM, 3836 OCTEON_CN23XX_VF_VID, vfdev); 3837 } 3838 } 3839 3840 return num_vfs_alloced; 3841 } 3842 3843 static int lio_pci_sriov_disable(struct octeon_device *oct) 3844 { 3845 int u; 3846 3847 if (pci_vfs_assigned(oct->pci_dev)) { 3848 dev_err(&oct->pci_dev->dev, "VFs are still assigned to VMs.\n"); 3849 return -EPERM; 3850 } 3851 3852 pci_disable_sriov(oct->pci_dev); 3853 3854 u = 0; 3855 while (u < MAX_POSSIBLE_VFS) { 3856 oct->sriov_info.dpiring_to_vfpcidev_lut[u] = NULL; 3857 u += oct->sriov_info.rings_per_vf; 3858 } 3859 3860 oct->sriov_info.num_vfs_alloced = 0; 3861 dev_info(&oct->pci_dev->dev, "oct->pf_num:%d disabled VFs\n", 3862 oct->pf_num); 3863 3864 return 0; 3865 } 3866 3867 static int liquidio_enable_sriov(struct pci_dev *dev, int num_vfs) 3868 { 3869 struct octeon_device *oct = pci_get_drvdata(dev); 3870 int ret = 0; 3871 3872 if ((num_vfs == oct->sriov_info.num_vfs_alloced) && 3873 (oct->sriov_info.sriov_enabled)) { 3874 dev_info(&oct->pci_dev->dev, "oct->pf_num:%d already enabled num_vfs:%d\n", 3875 oct->pf_num, num_vfs); 3876 return 0; 3877 } 3878 3879 if (!num_vfs) { 3880 lio_vf_rep_destroy(oct); 3881 ret = lio_pci_sriov_disable(oct); 3882 } else if (num_vfs > oct->sriov_info.max_vfs) { 3883 dev_err(&oct->pci_dev->dev, 3884 "OCTEON: Max allowed VFs:%d user requested:%d", 3885 oct->sriov_info.max_vfs, num_vfs); 3886 ret = -EPERM; 3887 } else { 3888 oct->sriov_info.num_vfs_alloced = num_vfs; 3889 ret = octeon_enable_sriov(oct); 3890 dev_info(&oct->pci_dev->dev, "oct->pf_num:%d num_vfs:%d\n", 3891 oct->pf_num, num_vfs); 3892 ret = lio_vf_rep_create(oct); 3893 if (ret) 3894 dev_info(&oct->pci_dev->dev, 3895 "vf representor create failed"); 3896 } 3897 3898 return ret; 3899 } 3900 #endif 3901 3902 /** 3903 * \brief initialize the NIC 3904 * @param oct octeon device 3905 * 3906 * This initialization routine is called once the Octeon device application is 3907 * up and running 3908 */ 3909 static int liquidio_init_nic_module(struct octeon_device *oct) 3910 { 3911 int i, retval = 0; 3912 int num_nic_ports = CFG_GET_NUM_NIC_PORTS(octeon_get_conf(oct)); 3913 3914 dev_dbg(&oct->pci_dev->dev, "Initializing network interfaces\n"); 3915 3916 /* only default iq and oq were initialized 3917 * initialize the rest as well 3918 */ 3919 /* run port_config command for each port */ 3920 oct->ifcount = num_nic_ports; 3921 3922 memset(oct->props, 0, sizeof(struct octdev_props) * num_nic_ports); 3923 3924 for (i = 0; i < MAX_OCTEON_LINKS; i++) 3925 oct->props[i].gmxport = -1; 3926 3927 retval = setup_nic_devices(oct); 3928 if (retval) { 3929 dev_err(&oct->pci_dev->dev, "Setup NIC devices failed\n"); 3930 goto octnet_init_failure; 3931 } 3932 3933 /* Call vf_rep_modinit if the firmware is switchdev capable 3934 * and do it from the first liquidio function probed. 3935 */ 3936 if (!oct->octeon_id && 3937 oct->fw_info.app_cap_flags & LIQUIDIO_SWITCHDEV_CAP) { 3938 retval = lio_vf_rep_modinit(); 3939 if (retval) { 3940 liquidio_stop_nic_module(oct); 3941 goto octnet_init_failure; 3942 } 3943 } 3944 3945 liquidio_ptp_init(oct); 3946 3947 dev_dbg(&oct->pci_dev->dev, "Network interfaces ready\n"); 3948 3949 return retval; 3950 3951 octnet_init_failure: 3952 3953 oct->ifcount = 0; 3954 3955 return retval; 3956 } 3957 3958 /** 3959 * \brief starter callback that invokes the remaining initialization work after 3960 * the NIC is up and running. 3961 * @param octptr work struct work_struct 3962 */ 3963 static void nic_starter(struct work_struct *work) 3964 { 3965 struct octeon_device *oct; 3966 struct cavium_wk *wk = (struct cavium_wk *)work; 3967 3968 oct = (struct octeon_device *)wk->ctxptr; 3969 3970 if (atomic_read(&oct->status) == OCT_DEV_RUNNING) 3971 return; 3972 3973 /* If the status of the device is CORE_OK, the core 3974 * application has reported its application type. Call 3975 * any registered handlers now and move to the RUNNING 3976 * state. 3977 */ 3978 if (atomic_read(&oct->status) != OCT_DEV_CORE_OK) { 3979 schedule_delayed_work(&oct->nic_poll_work.work, 3980 LIQUIDIO_STARTER_POLL_INTERVAL_MS); 3981 return; 3982 } 3983 3984 atomic_set(&oct->status, OCT_DEV_RUNNING); 3985 3986 if (oct->app_mode && oct->app_mode == CVM_DRV_NIC_APP) { 3987 dev_dbg(&oct->pci_dev->dev, "Starting NIC module\n"); 3988 3989 if (liquidio_init_nic_module(oct)) 3990 dev_err(&oct->pci_dev->dev, "NIC initialization failed\n"); 3991 else 3992 handshake[oct->octeon_id].started_ok = 1; 3993 } else { 3994 dev_err(&oct->pci_dev->dev, 3995 "Unexpected application running on NIC (%d). Check firmware.\n", 3996 oct->app_mode); 3997 } 3998 3999 complete(&handshake[oct->octeon_id].started); 4000 } 4001 4002 static int 4003 octeon_recv_vf_drv_notice(struct octeon_recv_info *recv_info, void *buf) 4004 { 4005 struct octeon_device *oct = (struct octeon_device *)buf; 4006 struct octeon_recv_pkt *recv_pkt = recv_info->recv_pkt; 4007 int i, notice, vf_idx; 4008 bool cores_crashed; 4009 u64 *data, vf_num; 4010 4011 notice = recv_pkt->rh.r.ossp; 4012 data = (u64 *)(get_rbd(recv_pkt->buffer_ptr[0]) + OCT_DROQ_INFO_SIZE); 4013 4014 /* the first 64-bit word of data is the vf_num */ 4015 vf_num = data[0]; 4016 octeon_swap_8B_data(&vf_num, 1); 4017 vf_idx = (int)vf_num - 1; 4018 4019 cores_crashed = READ_ONCE(oct->cores_crashed); 4020 4021 if (notice == VF_DRV_LOADED) { 4022 if (!(oct->sriov_info.vf_drv_loaded_mask & BIT_ULL(vf_idx))) { 4023 oct->sriov_info.vf_drv_loaded_mask |= BIT_ULL(vf_idx); 4024 dev_info(&oct->pci_dev->dev, 4025 "driver for VF%d was loaded\n", vf_idx); 4026 if (!cores_crashed) 4027 try_module_get(THIS_MODULE); 4028 } 4029 } else if (notice == VF_DRV_REMOVED) { 4030 if (oct->sriov_info.vf_drv_loaded_mask & BIT_ULL(vf_idx)) { 4031 oct->sriov_info.vf_drv_loaded_mask &= ~BIT_ULL(vf_idx); 4032 dev_info(&oct->pci_dev->dev, 4033 "driver for VF%d was removed\n", vf_idx); 4034 if (!cores_crashed) 4035 module_put(THIS_MODULE); 4036 } 4037 } else if (notice == VF_DRV_MACADDR_CHANGED) { 4038 u8 *b = (u8 *)&data[1]; 4039 4040 oct->sriov_info.vf_macaddr[vf_idx] = data[1]; 4041 dev_info(&oct->pci_dev->dev, 4042 "VF driver changed VF%d's MAC address to %pM\n", 4043 vf_idx, b + 2); 4044 } 4045 4046 for (i = 0; i < recv_pkt->buffer_count; i++) 4047 recv_buffer_free(recv_pkt->buffer_ptr[i]); 4048 octeon_free_recv_info(recv_info); 4049 4050 return 0; 4051 } 4052 4053 /** 4054 * \brief Device initialization for each Octeon device that is probed 4055 * @param octeon_dev octeon device 4056 */ 4057 static int octeon_device_init(struct octeon_device *octeon_dev) 4058 { 4059 int j, ret; 4060 char bootcmd[] = "\n"; 4061 char *dbg_enb = NULL; 4062 enum lio_fw_state fw_state; 4063 struct octeon_device_priv *oct_priv = 4064 (struct octeon_device_priv *)octeon_dev->priv; 4065 atomic_set(&octeon_dev->status, OCT_DEV_BEGIN_STATE); 4066 4067 /* Enable access to the octeon device and make its DMA capability 4068 * known to the OS. 4069 */ 4070 if (octeon_pci_os_setup(octeon_dev)) 4071 return 1; 4072 4073 atomic_set(&octeon_dev->status, OCT_DEV_PCI_ENABLE_DONE); 4074 4075 /* Identify the Octeon type and map the BAR address space. */ 4076 if (octeon_chip_specific_setup(octeon_dev)) { 4077 dev_err(&octeon_dev->pci_dev->dev, "Chip specific setup failed\n"); 4078 return 1; 4079 } 4080 4081 atomic_set(&octeon_dev->status, OCT_DEV_PCI_MAP_DONE); 4082 4083 /* Only add a reference after setting status 'OCT_DEV_PCI_MAP_DONE', 4084 * since that is what is required for the reference to be removed 4085 * during de-initialization (see 'octeon_destroy_resources'). 4086 */ 4087 octeon_register_device(octeon_dev, octeon_dev->pci_dev->bus->number, 4088 PCI_SLOT(octeon_dev->pci_dev->devfn), 4089 PCI_FUNC(octeon_dev->pci_dev->devfn), 4090 true); 4091 4092 octeon_dev->app_mode = CVM_DRV_INVALID_APP; 4093 4094 /* CN23XX supports preloaded firmware if the following is true: 4095 * 4096 * The adapter indicates that firmware is currently running AND 4097 * 'fw_type' is 'auto'. 4098 * 4099 * (default state is NEEDS_TO_BE_LOADED, override it if appropriate). 4100 */ 4101 if (OCTEON_CN23XX_PF(octeon_dev) && 4102 cn23xx_fw_loaded(octeon_dev) && fw_type_is_auto()) { 4103 atomic_cmpxchg(octeon_dev->adapter_fw_state, 4104 FW_NEEDS_TO_BE_LOADED, FW_IS_PRELOADED); 4105 } 4106 4107 /* If loading firmware, only first device of adapter needs to do so. */ 4108 fw_state = atomic_cmpxchg(octeon_dev->adapter_fw_state, 4109 FW_NEEDS_TO_BE_LOADED, 4110 FW_IS_BEING_LOADED); 4111 4112 /* Here, [local variable] 'fw_state' is set to one of: 4113 * 4114 * FW_IS_PRELOADED: No firmware is to be loaded (see above) 4115 * FW_NEEDS_TO_BE_LOADED: The driver's first instance will load 4116 * firmware to the adapter. 4117 * FW_IS_BEING_LOADED: The driver's second instance will not load 4118 * firmware to the adapter. 4119 */ 4120 4121 /* Prior to f/w load, perform a soft reset of the Octeon device; 4122 * if error resetting, return w/error. 4123 */ 4124 if (fw_state == FW_NEEDS_TO_BE_LOADED) 4125 if (octeon_dev->fn_list.soft_reset(octeon_dev)) 4126 return 1; 4127 4128 /* Initialize the dispatch mechanism used to push packets arriving on 4129 * Octeon Output queues. 4130 */ 4131 if (octeon_init_dispatch_list(octeon_dev)) 4132 return 1; 4133 4134 octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC, 4135 OPCODE_NIC_CORE_DRV_ACTIVE, 4136 octeon_core_drv_init, 4137 octeon_dev); 4138 4139 octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC, 4140 OPCODE_NIC_VF_DRV_NOTICE, 4141 octeon_recv_vf_drv_notice, octeon_dev); 4142 INIT_DELAYED_WORK(&octeon_dev->nic_poll_work.work, nic_starter); 4143 octeon_dev->nic_poll_work.ctxptr = (void *)octeon_dev; 4144 schedule_delayed_work(&octeon_dev->nic_poll_work.work, 4145 LIQUIDIO_STARTER_POLL_INTERVAL_MS); 4146 4147 atomic_set(&octeon_dev->status, OCT_DEV_DISPATCH_INIT_DONE); 4148 4149 if (octeon_set_io_queues_off(octeon_dev)) { 4150 dev_err(&octeon_dev->pci_dev->dev, "setting io queues off failed\n"); 4151 return 1; 4152 } 4153 4154 if (OCTEON_CN23XX_PF(octeon_dev)) { 4155 ret = octeon_dev->fn_list.setup_device_regs(octeon_dev); 4156 if (ret) { 4157 dev_err(&octeon_dev->pci_dev->dev, "OCTEON: Failed to configure device registers\n"); 4158 return ret; 4159 } 4160 } 4161 4162 /* Initialize soft command buffer pool 4163 */ 4164 if (octeon_setup_sc_buffer_pool(octeon_dev)) { 4165 dev_err(&octeon_dev->pci_dev->dev, "sc buffer pool allocation failed\n"); 4166 return 1; 4167 } 4168 atomic_set(&octeon_dev->status, OCT_DEV_SC_BUFF_POOL_INIT_DONE); 4169 4170 /* Setup the data structures that manage this Octeon's Input queues. */ 4171 if (octeon_setup_instr_queues(octeon_dev)) { 4172 dev_err(&octeon_dev->pci_dev->dev, 4173 "instruction queue initialization failed\n"); 4174 return 1; 4175 } 4176 atomic_set(&octeon_dev->status, OCT_DEV_INSTR_QUEUE_INIT_DONE); 4177 4178 /* Initialize lists to manage the requests of different types that 4179 * arrive from user & kernel applications for this octeon device. 4180 */ 4181 if (octeon_setup_response_list(octeon_dev)) { 4182 dev_err(&octeon_dev->pci_dev->dev, "Response list allocation failed\n"); 4183 return 1; 4184 } 4185 atomic_set(&octeon_dev->status, OCT_DEV_RESP_LIST_INIT_DONE); 4186 4187 if (octeon_setup_output_queues(octeon_dev)) { 4188 dev_err(&octeon_dev->pci_dev->dev, "Output queue initialization failed\n"); 4189 return 1; 4190 } 4191 4192 atomic_set(&octeon_dev->status, OCT_DEV_DROQ_INIT_DONE); 4193 4194 if (OCTEON_CN23XX_PF(octeon_dev)) { 4195 if (octeon_dev->fn_list.setup_mbox(octeon_dev)) { 4196 dev_err(&octeon_dev->pci_dev->dev, "OCTEON: Mailbox setup failed\n"); 4197 return 1; 4198 } 4199 atomic_set(&octeon_dev->status, OCT_DEV_MBOX_SETUP_DONE); 4200 4201 if (octeon_allocate_ioq_vector 4202 (octeon_dev, 4203 octeon_dev->sriov_info.num_pf_rings)) { 4204 dev_err(&octeon_dev->pci_dev->dev, "OCTEON: ioq vector allocation failed\n"); 4205 return 1; 4206 } 4207 atomic_set(&octeon_dev->status, OCT_DEV_MSIX_ALLOC_VECTOR_DONE); 4208 4209 } else { 4210 /* The input and output queue registers were setup earlier (the 4211 * queues were not enabled). Any additional registers 4212 * that need to be programmed should be done now. 4213 */ 4214 ret = octeon_dev->fn_list.setup_device_regs(octeon_dev); 4215 if (ret) { 4216 dev_err(&octeon_dev->pci_dev->dev, 4217 "Failed to configure device registers\n"); 4218 return ret; 4219 } 4220 } 4221 4222 /* Initialize the tasklet that handles output queue packet processing.*/ 4223 dev_dbg(&octeon_dev->pci_dev->dev, "Initializing droq tasklet\n"); 4224 tasklet_init(&oct_priv->droq_tasklet, octeon_droq_bh, 4225 (unsigned long)octeon_dev); 4226 4227 /* Setup the interrupt handler and record the INT SUM register address 4228 */ 4229 if (octeon_setup_interrupt(octeon_dev, 4230 octeon_dev->sriov_info.num_pf_rings)) 4231 return 1; 4232 4233 /* Enable Octeon device interrupts */ 4234 octeon_dev->fn_list.enable_interrupt(octeon_dev, OCTEON_ALL_INTR); 4235 4236 atomic_set(&octeon_dev->status, OCT_DEV_INTR_SET_DONE); 4237 4238 /* Send Credit for Octeon Output queues. Credits are always sent BEFORE 4239 * the output queue is enabled. 4240 * This ensures that we'll receive the f/w CORE DRV_ACTIVE message in 4241 * case we've configured CN23XX_SLI_GBL_CONTROL[NOPTR_D] = 0. 4242 * Otherwise, it is possible that the DRV_ACTIVE message will be sent 4243 * before any credits have been issued, causing the ring to be reset 4244 * (and the f/w appear to never have started). 4245 */ 4246 for (j = 0; j < octeon_dev->num_oqs; j++) 4247 writel(octeon_dev->droq[j]->max_count, 4248 octeon_dev->droq[j]->pkts_credit_reg); 4249 4250 /* Enable the input and output queues for this Octeon device */ 4251 ret = octeon_dev->fn_list.enable_io_queues(octeon_dev); 4252 if (ret) { 4253 dev_err(&octeon_dev->pci_dev->dev, "Failed to enable input/output queues"); 4254 return ret; 4255 } 4256 4257 atomic_set(&octeon_dev->status, OCT_DEV_IO_QUEUES_DONE); 4258 4259 if (fw_state == FW_NEEDS_TO_BE_LOADED) { 4260 dev_dbg(&octeon_dev->pci_dev->dev, "Waiting for DDR initialization...\n"); 4261 if (!ddr_timeout) { 4262 dev_info(&octeon_dev->pci_dev->dev, 4263 "WAITING. Set ddr_timeout to non-zero value to proceed with initialization.\n"); 4264 } 4265 4266 schedule_timeout_uninterruptible(HZ * LIO_RESET_SECS); 4267 4268 /* Wait for the octeon to initialize DDR after the soft-reset.*/ 4269 while (!ddr_timeout) { 4270 set_current_state(TASK_INTERRUPTIBLE); 4271 if (schedule_timeout(HZ / 10)) { 4272 /* user probably pressed Control-C */ 4273 return 1; 4274 } 4275 } 4276 ret = octeon_wait_for_ddr_init(octeon_dev, &ddr_timeout); 4277 if (ret) { 4278 dev_err(&octeon_dev->pci_dev->dev, 4279 "DDR not initialized. Please confirm that board is configured to boot from Flash, ret: %d\n", 4280 ret); 4281 return 1; 4282 } 4283 4284 if (octeon_wait_for_bootloader(octeon_dev, 1000)) { 4285 dev_err(&octeon_dev->pci_dev->dev, "Board not responding\n"); 4286 return 1; 4287 } 4288 4289 /* Divert uboot to take commands from host instead. */ 4290 ret = octeon_console_send_cmd(octeon_dev, bootcmd, 50); 4291 4292 dev_dbg(&octeon_dev->pci_dev->dev, "Initializing consoles\n"); 4293 ret = octeon_init_consoles(octeon_dev); 4294 if (ret) { 4295 dev_err(&octeon_dev->pci_dev->dev, "Could not access board consoles\n"); 4296 return 1; 4297 } 4298 /* If console debug enabled, specify empty string to use default 4299 * enablement ELSE specify NULL string for 'disabled'. 4300 */ 4301 dbg_enb = octeon_console_debug_enabled(0) ? "" : NULL; 4302 ret = octeon_add_console(octeon_dev, 0, dbg_enb); 4303 if (ret) { 4304 dev_err(&octeon_dev->pci_dev->dev, "Could not access board console\n"); 4305 return 1; 4306 } else if (octeon_console_debug_enabled(0)) { 4307 /* If console was added AND we're logging console output 4308 * then set our console print function. 4309 */ 4310 octeon_dev->console[0].print = octeon_dbg_console_print; 4311 } 4312 4313 atomic_set(&octeon_dev->status, OCT_DEV_CONSOLE_INIT_DONE); 4314 4315 dev_dbg(&octeon_dev->pci_dev->dev, "Loading firmware\n"); 4316 ret = load_firmware(octeon_dev); 4317 if (ret) { 4318 dev_err(&octeon_dev->pci_dev->dev, "Could not load firmware to board\n"); 4319 return 1; 4320 } 4321 4322 atomic_set(octeon_dev->adapter_fw_state, FW_HAS_BEEN_LOADED); 4323 } 4324 4325 handshake[octeon_dev->octeon_id].init_ok = 1; 4326 complete(&handshake[octeon_dev->octeon_id].init); 4327 4328 atomic_set(&octeon_dev->status, OCT_DEV_HOST_OK); 4329 4330 return 0; 4331 } 4332 4333 /** 4334 * \brief Debug console print function 4335 * @param octeon_dev octeon device 4336 * @param console_num console number 4337 * @param prefix first portion of line to display 4338 * @param suffix second portion of line to display 4339 * 4340 * The OCTEON debug console outputs entire lines (excluding '\n'). 4341 * Normally, the line will be passed in the 'prefix' parameter. 4342 * However, due to buffering, it is possible for a line to be split into two 4343 * parts, in which case they will be passed as the 'prefix' parameter and 4344 * 'suffix' parameter. 4345 */ 4346 static int octeon_dbg_console_print(struct octeon_device *oct, u32 console_num, 4347 char *prefix, char *suffix) 4348 { 4349 if (prefix && suffix) 4350 dev_info(&oct->pci_dev->dev, "%u: %s%s\n", console_num, prefix, 4351 suffix); 4352 else if (prefix) 4353 dev_info(&oct->pci_dev->dev, "%u: %s\n", console_num, prefix); 4354 else if (suffix) 4355 dev_info(&oct->pci_dev->dev, "%u: %s\n", console_num, suffix); 4356 4357 return 0; 4358 } 4359 4360 /** 4361 * \brief Exits the module 4362 */ 4363 static void __exit liquidio_exit(void) 4364 { 4365 liquidio_deinit_pci(); 4366 4367 pr_info("LiquidIO network module is now unloaded\n"); 4368 } 4369 4370 module_init(liquidio_init); 4371 module_exit(liquidio_exit); 4372