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