1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 2 /* QLogic qede NIC Driver 3 * Copyright (c) 2015-2017 QLogic Corporation 4 * Copyright (c) 2019-2020 Marvell International Ltd. 5 */ 6 7 #include <linux/crash_dump.h> 8 #include <linux/module.h> 9 #include <linux/pci.h> 10 #include <linux/device.h> 11 #include <linux/netdevice.h> 12 #include <linux/etherdevice.h> 13 #include <linux/skbuff.h> 14 #include <linux/errno.h> 15 #include <linux/list.h> 16 #include <linux/string.h> 17 #include <linux/dma-mapping.h> 18 #include <linux/interrupt.h> 19 #include <asm/byteorder.h> 20 #include <asm/param.h> 21 #include <linux/io.h> 22 #include <linux/netdev_features.h> 23 #include <linux/udp.h> 24 #include <linux/tcp.h> 25 #include <net/udp_tunnel.h> 26 #include <linux/ip.h> 27 #include <net/ipv6.h> 28 #include <net/tcp.h> 29 #include <linux/if_ether.h> 30 #include <linux/if_vlan.h> 31 #include <linux/pkt_sched.h> 32 #include <linux/ethtool.h> 33 #include <linux/in.h> 34 #include <linux/random.h> 35 #include <net/ip6_checksum.h> 36 #include <linux/bitops.h> 37 #include <linux/vmalloc.h> 38 #include "qede.h" 39 #include "qede_ptp.h" 40 41 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx Ethernet Driver"); 42 MODULE_LICENSE("GPL"); 43 44 static uint debug; 45 module_param(debug, uint, 0); 46 MODULE_PARM_DESC(debug, " Default debug msglevel"); 47 48 static const struct qed_eth_ops *qed_ops; 49 50 #define CHIP_NUM_57980S_40 0x1634 51 #define CHIP_NUM_57980S_10 0x1666 52 #define CHIP_NUM_57980S_MF 0x1636 53 #define CHIP_NUM_57980S_100 0x1644 54 #define CHIP_NUM_57980S_50 0x1654 55 #define CHIP_NUM_57980S_25 0x1656 56 #define CHIP_NUM_57980S_IOV 0x1664 57 #define CHIP_NUM_AH 0x8070 58 #define CHIP_NUM_AH_IOV 0x8090 59 60 #ifndef PCI_DEVICE_ID_NX2_57980E 61 #define PCI_DEVICE_ID_57980S_40 CHIP_NUM_57980S_40 62 #define PCI_DEVICE_ID_57980S_10 CHIP_NUM_57980S_10 63 #define PCI_DEVICE_ID_57980S_MF CHIP_NUM_57980S_MF 64 #define PCI_DEVICE_ID_57980S_100 CHIP_NUM_57980S_100 65 #define PCI_DEVICE_ID_57980S_50 CHIP_NUM_57980S_50 66 #define PCI_DEVICE_ID_57980S_25 CHIP_NUM_57980S_25 67 #define PCI_DEVICE_ID_57980S_IOV CHIP_NUM_57980S_IOV 68 #define PCI_DEVICE_ID_AH CHIP_NUM_AH 69 #define PCI_DEVICE_ID_AH_IOV CHIP_NUM_AH_IOV 70 71 #endif 72 73 enum qede_pci_private { 74 QEDE_PRIVATE_PF, 75 QEDE_PRIVATE_VF 76 }; 77 78 static const struct pci_device_id qede_pci_tbl[] = { 79 { PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_40), .driver_data = QEDE_PRIVATE_PF }, 80 { PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_10), .driver_data = QEDE_PRIVATE_PF }, 81 { PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_MF), .driver_data = QEDE_PRIVATE_PF }, 82 { PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_100), .driver_data = QEDE_PRIVATE_PF }, 83 { PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_50), .driver_data = QEDE_PRIVATE_PF }, 84 { PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_25), .driver_data = QEDE_PRIVATE_PF }, 85 #ifdef CONFIG_QED_SRIOV 86 { PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_IOV), .driver_data = QEDE_PRIVATE_VF }, 87 #endif 88 { PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_AH), .driver_data = QEDE_PRIVATE_PF }, 89 #ifdef CONFIG_QED_SRIOV 90 { PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_AH_IOV), .driver_data = QEDE_PRIVATE_VF }, 91 #endif 92 { } 93 }; 94 95 MODULE_DEVICE_TABLE(pci, qede_pci_tbl); 96 97 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id); 98 static pci_ers_result_t 99 qede_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state); 100 101 #define TX_TIMEOUT (5 * HZ) 102 103 /* Utilize last protocol index for XDP */ 104 #define XDP_PI 11 105 106 static void qede_remove(struct pci_dev *pdev); 107 static void qede_shutdown(struct pci_dev *pdev); 108 static void qede_link_update(void *dev, struct qed_link_output *link); 109 static void qede_schedule_recovery_handler(void *dev); 110 static void qede_recovery_handler(struct qede_dev *edev); 111 static void qede_schedule_hw_err_handler(void *dev, 112 enum qed_hw_err_type err_type); 113 static void qede_get_eth_tlv_data(void *edev, void *data); 114 static void qede_get_generic_tlv_data(void *edev, 115 struct qed_generic_tlvs *data); 116 static void qede_generic_hw_err_handler(struct qede_dev *edev); 117 #ifdef CONFIG_QED_SRIOV 118 static int qede_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan, u8 qos, 119 __be16 vlan_proto) 120 { 121 struct qede_dev *edev = netdev_priv(ndev); 122 123 if (vlan > 4095) { 124 DP_NOTICE(edev, "Illegal vlan value %d\n", vlan); 125 return -EINVAL; 126 } 127 128 if (vlan_proto != htons(ETH_P_8021Q)) 129 return -EPROTONOSUPPORT; 130 131 DP_VERBOSE(edev, QED_MSG_IOV, "Setting Vlan 0x%04x to VF [%d]\n", 132 vlan, vf); 133 134 return edev->ops->iov->set_vlan(edev->cdev, vlan, vf); 135 } 136 137 static int qede_set_vf_mac(struct net_device *ndev, int vfidx, u8 *mac) 138 { 139 struct qede_dev *edev = netdev_priv(ndev); 140 141 DP_VERBOSE(edev, QED_MSG_IOV, "Setting MAC %pM to VF [%d]\n", mac, vfidx); 142 143 if (!is_valid_ether_addr(mac)) { 144 DP_VERBOSE(edev, QED_MSG_IOV, "MAC address isn't valid\n"); 145 return -EINVAL; 146 } 147 148 return edev->ops->iov->set_mac(edev->cdev, mac, vfidx); 149 } 150 151 static int qede_sriov_configure(struct pci_dev *pdev, int num_vfs_param) 152 { 153 struct qede_dev *edev = netdev_priv(pci_get_drvdata(pdev)); 154 struct qed_dev_info *qed_info = &edev->dev_info.common; 155 struct qed_update_vport_params *vport_params; 156 int rc; 157 158 vport_params = vzalloc(sizeof(*vport_params)); 159 if (!vport_params) 160 return -ENOMEM; 161 DP_VERBOSE(edev, QED_MSG_IOV, "Requested %d VFs\n", num_vfs_param); 162 163 rc = edev->ops->iov->configure(edev->cdev, num_vfs_param); 164 165 /* Enable/Disable Tx switching for PF */ 166 if ((rc == num_vfs_param) && netif_running(edev->ndev) && 167 !qed_info->b_inter_pf_switch && qed_info->tx_switching) { 168 vport_params->vport_id = 0; 169 vport_params->update_tx_switching_flg = 1; 170 vport_params->tx_switching_flg = num_vfs_param ? 1 : 0; 171 edev->ops->vport_update(edev->cdev, vport_params); 172 } 173 174 vfree(vport_params); 175 return rc; 176 } 177 #endif 178 179 static int __maybe_unused qede_suspend(struct device *dev) 180 { 181 dev_info(dev, "Device does not support suspend operation\n"); 182 183 return -EOPNOTSUPP; 184 } 185 186 static DEFINE_SIMPLE_DEV_PM_OPS(qede_pm_ops, qede_suspend, NULL); 187 188 static const struct pci_error_handlers qede_err_handler = { 189 .error_detected = qede_io_error_detected, 190 }; 191 192 static struct pci_driver qede_pci_driver = { 193 .name = "qede", 194 .id_table = qede_pci_tbl, 195 .probe = qede_probe, 196 .remove = qede_remove, 197 .shutdown = qede_shutdown, 198 #ifdef CONFIG_QED_SRIOV 199 .sriov_configure = qede_sriov_configure, 200 #endif 201 .err_handler = &qede_err_handler, 202 .driver.pm = &qede_pm_ops, 203 }; 204 205 static struct qed_eth_cb_ops qede_ll_ops = { 206 .common = { 207 #ifdef CONFIG_RFS_ACCEL 208 .arfs_filter_op = qede_arfs_filter_op, 209 #endif 210 .link_update = qede_link_update, 211 .schedule_recovery_handler = qede_schedule_recovery_handler, 212 .schedule_hw_err_handler = qede_schedule_hw_err_handler, 213 .get_generic_tlv_data = qede_get_generic_tlv_data, 214 .get_protocol_tlv_data = qede_get_eth_tlv_data, 215 }, 216 .force_mac = qede_force_mac, 217 .ports_update = qede_udp_ports_update, 218 }; 219 220 static int qede_netdev_event(struct notifier_block *this, unsigned long event, 221 void *ptr) 222 { 223 struct net_device *ndev = netdev_notifier_info_to_dev(ptr); 224 struct ethtool_drvinfo drvinfo; 225 struct qede_dev *edev; 226 227 if (event != NETDEV_CHANGENAME && event != NETDEV_CHANGEADDR) 228 goto done; 229 230 /* Check whether this is a qede device */ 231 if (!ndev || !ndev->ethtool_ops || !ndev->ethtool_ops->get_drvinfo) 232 goto done; 233 234 memset(&drvinfo, 0, sizeof(drvinfo)); 235 ndev->ethtool_ops->get_drvinfo(ndev, &drvinfo); 236 if (strcmp(drvinfo.driver, "qede")) 237 goto done; 238 edev = netdev_priv(ndev); 239 240 switch (event) { 241 case NETDEV_CHANGENAME: 242 /* Notify qed of the name change */ 243 if (!edev->ops || !edev->ops->common) 244 goto done; 245 edev->ops->common->set_name(edev->cdev, edev->ndev->name); 246 break; 247 case NETDEV_CHANGEADDR: 248 edev = netdev_priv(ndev); 249 qede_rdma_event_changeaddr(edev); 250 break; 251 } 252 253 done: 254 return NOTIFY_DONE; 255 } 256 257 static struct notifier_block qede_netdev_notifier = { 258 .notifier_call = qede_netdev_event, 259 }; 260 261 static 262 int __init qede_init(void) 263 { 264 int ret; 265 266 pr_info("qede init: QLogic FastLinQ 4xxxx Ethernet Driver qede\n"); 267 268 qede_forced_speed_maps_init(); 269 270 qed_ops = qed_get_eth_ops(); 271 if (!qed_ops) { 272 pr_notice("Failed to get qed ethtool operations\n"); 273 return -EINVAL; 274 } 275 276 /* Must register notifier before pci ops, since we might miss 277 * interface rename after pci probe and netdev registration. 278 */ 279 ret = register_netdevice_notifier(&qede_netdev_notifier); 280 if (ret) { 281 pr_notice("Failed to register netdevice_notifier\n"); 282 qed_put_eth_ops(); 283 return -EINVAL; 284 } 285 286 ret = pci_register_driver(&qede_pci_driver); 287 if (ret) { 288 pr_notice("Failed to register driver\n"); 289 unregister_netdevice_notifier(&qede_netdev_notifier); 290 qed_put_eth_ops(); 291 return -EINVAL; 292 } 293 294 return 0; 295 } 296 297 static void __exit qede_cleanup(void) 298 { 299 if (debug & QED_LOG_INFO_MASK) 300 pr_info("qede_cleanup called\n"); 301 302 unregister_netdevice_notifier(&qede_netdev_notifier); 303 pci_unregister_driver(&qede_pci_driver); 304 qed_put_eth_ops(); 305 } 306 307 module_init(qede_init); 308 module_exit(qede_cleanup); 309 310 static int qede_open(struct net_device *ndev); 311 static int qede_close(struct net_device *ndev); 312 313 void qede_fill_by_demand_stats(struct qede_dev *edev) 314 { 315 struct qede_stats_common *p_common = &edev->stats.common; 316 struct qed_eth_stats stats; 317 318 edev->ops->get_vport_stats(edev->cdev, &stats); 319 320 spin_lock(&edev->stats_lock); 321 322 p_common->no_buff_discards = stats.common.no_buff_discards; 323 p_common->packet_too_big_discard = stats.common.packet_too_big_discard; 324 p_common->ttl0_discard = stats.common.ttl0_discard; 325 p_common->rx_ucast_bytes = stats.common.rx_ucast_bytes; 326 p_common->rx_mcast_bytes = stats.common.rx_mcast_bytes; 327 p_common->rx_bcast_bytes = stats.common.rx_bcast_bytes; 328 p_common->rx_ucast_pkts = stats.common.rx_ucast_pkts; 329 p_common->rx_mcast_pkts = stats.common.rx_mcast_pkts; 330 p_common->rx_bcast_pkts = stats.common.rx_bcast_pkts; 331 p_common->mftag_filter_discards = stats.common.mftag_filter_discards; 332 p_common->mac_filter_discards = stats.common.mac_filter_discards; 333 p_common->gft_filter_drop = stats.common.gft_filter_drop; 334 335 p_common->tx_ucast_bytes = stats.common.tx_ucast_bytes; 336 p_common->tx_mcast_bytes = stats.common.tx_mcast_bytes; 337 p_common->tx_bcast_bytes = stats.common.tx_bcast_bytes; 338 p_common->tx_ucast_pkts = stats.common.tx_ucast_pkts; 339 p_common->tx_mcast_pkts = stats.common.tx_mcast_pkts; 340 p_common->tx_bcast_pkts = stats.common.tx_bcast_pkts; 341 p_common->tx_err_drop_pkts = stats.common.tx_err_drop_pkts; 342 p_common->coalesced_pkts = stats.common.tpa_coalesced_pkts; 343 p_common->coalesced_events = stats.common.tpa_coalesced_events; 344 p_common->coalesced_aborts_num = stats.common.tpa_aborts_num; 345 p_common->non_coalesced_pkts = stats.common.tpa_not_coalesced_pkts; 346 p_common->coalesced_bytes = stats.common.tpa_coalesced_bytes; 347 348 p_common->rx_64_byte_packets = stats.common.rx_64_byte_packets; 349 p_common->rx_65_to_127_byte_packets = 350 stats.common.rx_65_to_127_byte_packets; 351 p_common->rx_128_to_255_byte_packets = 352 stats.common.rx_128_to_255_byte_packets; 353 p_common->rx_256_to_511_byte_packets = 354 stats.common.rx_256_to_511_byte_packets; 355 p_common->rx_512_to_1023_byte_packets = 356 stats.common.rx_512_to_1023_byte_packets; 357 p_common->rx_1024_to_1518_byte_packets = 358 stats.common.rx_1024_to_1518_byte_packets; 359 p_common->rx_crc_errors = stats.common.rx_crc_errors; 360 p_common->rx_mac_crtl_frames = stats.common.rx_mac_crtl_frames; 361 p_common->rx_pause_frames = stats.common.rx_pause_frames; 362 p_common->rx_pfc_frames = stats.common.rx_pfc_frames; 363 p_common->rx_align_errors = stats.common.rx_align_errors; 364 p_common->rx_carrier_errors = stats.common.rx_carrier_errors; 365 p_common->rx_oversize_packets = stats.common.rx_oversize_packets; 366 p_common->rx_jabbers = stats.common.rx_jabbers; 367 p_common->rx_undersize_packets = stats.common.rx_undersize_packets; 368 p_common->rx_fragments = stats.common.rx_fragments; 369 p_common->tx_64_byte_packets = stats.common.tx_64_byte_packets; 370 p_common->tx_65_to_127_byte_packets = 371 stats.common.tx_65_to_127_byte_packets; 372 p_common->tx_128_to_255_byte_packets = 373 stats.common.tx_128_to_255_byte_packets; 374 p_common->tx_256_to_511_byte_packets = 375 stats.common.tx_256_to_511_byte_packets; 376 p_common->tx_512_to_1023_byte_packets = 377 stats.common.tx_512_to_1023_byte_packets; 378 p_common->tx_1024_to_1518_byte_packets = 379 stats.common.tx_1024_to_1518_byte_packets; 380 p_common->tx_pause_frames = stats.common.tx_pause_frames; 381 p_common->tx_pfc_frames = stats.common.tx_pfc_frames; 382 p_common->brb_truncates = stats.common.brb_truncates; 383 p_common->brb_discards = stats.common.brb_discards; 384 p_common->tx_mac_ctrl_frames = stats.common.tx_mac_ctrl_frames; 385 p_common->link_change_count = stats.common.link_change_count; 386 p_common->ptp_skip_txts = edev->ptp_skip_txts; 387 388 if (QEDE_IS_BB(edev)) { 389 struct qede_stats_bb *p_bb = &edev->stats.bb; 390 391 p_bb->rx_1519_to_1522_byte_packets = 392 stats.bb.rx_1519_to_1522_byte_packets; 393 p_bb->rx_1519_to_2047_byte_packets = 394 stats.bb.rx_1519_to_2047_byte_packets; 395 p_bb->rx_2048_to_4095_byte_packets = 396 stats.bb.rx_2048_to_4095_byte_packets; 397 p_bb->rx_4096_to_9216_byte_packets = 398 stats.bb.rx_4096_to_9216_byte_packets; 399 p_bb->rx_9217_to_16383_byte_packets = 400 stats.bb.rx_9217_to_16383_byte_packets; 401 p_bb->tx_1519_to_2047_byte_packets = 402 stats.bb.tx_1519_to_2047_byte_packets; 403 p_bb->tx_2048_to_4095_byte_packets = 404 stats.bb.tx_2048_to_4095_byte_packets; 405 p_bb->tx_4096_to_9216_byte_packets = 406 stats.bb.tx_4096_to_9216_byte_packets; 407 p_bb->tx_9217_to_16383_byte_packets = 408 stats.bb.tx_9217_to_16383_byte_packets; 409 p_bb->tx_lpi_entry_count = stats.bb.tx_lpi_entry_count; 410 p_bb->tx_total_collisions = stats.bb.tx_total_collisions; 411 } else { 412 struct qede_stats_ah *p_ah = &edev->stats.ah; 413 414 p_ah->rx_1519_to_max_byte_packets = 415 stats.ah.rx_1519_to_max_byte_packets; 416 p_ah->tx_1519_to_max_byte_packets = 417 stats.ah.tx_1519_to_max_byte_packets; 418 } 419 420 spin_unlock(&edev->stats_lock); 421 } 422 423 static void qede_get_stats64(struct net_device *dev, 424 struct rtnl_link_stats64 *stats) 425 { 426 struct qede_dev *edev = netdev_priv(dev); 427 struct qede_stats_common *p_common; 428 429 p_common = &edev->stats.common; 430 431 spin_lock(&edev->stats_lock); 432 433 stats->rx_packets = p_common->rx_ucast_pkts + p_common->rx_mcast_pkts + 434 p_common->rx_bcast_pkts; 435 stats->tx_packets = p_common->tx_ucast_pkts + p_common->tx_mcast_pkts + 436 p_common->tx_bcast_pkts; 437 438 stats->rx_bytes = p_common->rx_ucast_bytes + p_common->rx_mcast_bytes + 439 p_common->rx_bcast_bytes; 440 stats->tx_bytes = p_common->tx_ucast_bytes + p_common->tx_mcast_bytes + 441 p_common->tx_bcast_bytes; 442 443 stats->tx_errors = p_common->tx_err_drop_pkts; 444 stats->multicast = p_common->rx_mcast_pkts + p_common->rx_bcast_pkts; 445 446 stats->rx_fifo_errors = p_common->no_buff_discards; 447 448 if (QEDE_IS_BB(edev)) 449 stats->collisions = edev->stats.bb.tx_total_collisions; 450 stats->rx_crc_errors = p_common->rx_crc_errors; 451 stats->rx_frame_errors = p_common->rx_align_errors; 452 453 spin_unlock(&edev->stats_lock); 454 } 455 456 #ifdef CONFIG_QED_SRIOV 457 static int qede_get_vf_config(struct net_device *dev, int vfidx, 458 struct ifla_vf_info *ivi) 459 { 460 struct qede_dev *edev = netdev_priv(dev); 461 462 if (!edev->ops) 463 return -EINVAL; 464 465 return edev->ops->iov->get_config(edev->cdev, vfidx, ivi); 466 } 467 468 static int qede_set_vf_rate(struct net_device *dev, int vfidx, 469 int min_tx_rate, int max_tx_rate) 470 { 471 struct qede_dev *edev = netdev_priv(dev); 472 473 return edev->ops->iov->set_rate(edev->cdev, vfidx, min_tx_rate, 474 max_tx_rate); 475 } 476 477 static int qede_set_vf_spoofchk(struct net_device *dev, int vfidx, bool val) 478 { 479 struct qede_dev *edev = netdev_priv(dev); 480 481 if (!edev->ops) 482 return -EINVAL; 483 484 return edev->ops->iov->set_spoof(edev->cdev, vfidx, val); 485 } 486 487 static int qede_set_vf_link_state(struct net_device *dev, int vfidx, 488 int link_state) 489 { 490 struct qede_dev *edev = netdev_priv(dev); 491 492 if (!edev->ops) 493 return -EINVAL; 494 495 return edev->ops->iov->set_link_state(edev->cdev, vfidx, link_state); 496 } 497 498 static int qede_set_vf_trust(struct net_device *dev, int vfidx, bool setting) 499 { 500 struct qede_dev *edev = netdev_priv(dev); 501 502 if (!edev->ops) 503 return -EINVAL; 504 505 return edev->ops->iov->set_trust(edev->cdev, vfidx, setting); 506 } 507 #endif 508 509 static void qede_fp_sb_dump(struct qede_dev *edev, struct qede_fastpath *fp) 510 { 511 char *p_sb = (char *)fp->sb_info->sb_virt; 512 u32 sb_size, i; 513 514 sb_size = sizeof(struct status_block); 515 516 for (i = 0; i < sb_size; i += 8) 517 DP_NOTICE(edev, 518 "%02hhX %02hhX %02hhX %02hhX %02hhX %02hhX %02hhX %02hhX\n", 519 p_sb[i], p_sb[i + 1], p_sb[i + 2], p_sb[i + 3], 520 p_sb[i + 4], p_sb[i + 5], p_sb[i + 6], p_sb[i + 7]); 521 } 522 523 static void 524 qede_txq_fp_log_metadata(struct qede_dev *edev, 525 struct qede_fastpath *fp, struct qede_tx_queue *txq) 526 { 527 struct qed_chain *p_chain = &txq->tx_pbl; 528 529 /* Dump txq/fp/sb ids etc. other metadata */ 530 DP_NOTICE(edev, 531 "fpid 0x%x sbid 0x%x txqid [0x%x] ndev_qid [0x%x] cos [0x%x] p_chain %p cap %d size %d jiffies %lu HZ 0x%x\n", 532 fp->id, fp->sb_info->igu_sb_id, txq->index, txq->ndev_txq_id, txq->cos, 533 p_chain, p_chain->capacity, p_chain->size, jiffies, HZ); 534 535 /* Dump all the relevant prod/cons indexes */ 536 DP_NOTICE(edev, 537 "hw cons %04x sw_tx_prod=0x%x, sw_tx_cons=0x%x, bd_prod 0x%x bd_cons 0x%x\n", 538 le16_to_cpu(*txq->hw_cons_ptr), txq->sw_tx_prod, txq->sw_tx_cons, 539 qed_chain_get_prod_idx(p_chain), qed_chain_get_cons_idx(p_chain)); 540 } 541 542 static void 543 qede_tx_log_print(struct qede_dev *edev, struct qede_fastpath *fp, struct qede_tx_queue *txq) 544 { 545 struct qed_sb_info_dbg sb_dbg; 546 int rc; 547 548 /* sb info */ 549 qede_fp_sb_dump(edev, fp); 550 551 memset(&sb_dbg, 0, sizeof(sb_dbg)); 552 rc = edev->ops->common->get_sb_info(edev->cdev, fp->sb_info, (u16)fp->id, &sb_dbg); 553 554 DP_NOTICE(edev, "IGU: prod %08x cons %08x CAU Tx %04x\n", 555 sb_dbg.igu_prod, sb_dbg.igu_cons, sb_dbg.pi[TX_PI(txq->cos)]); 556 557 /* report to mfw */ 558 edev->ops->common->mfw_report(edev->cdev, 559 "Txq[%d]: FW cons [host] %04x, SW cons %04x, SW prod %04x [Jiffies %lu]\n", 560 txq->index, le16_to_cpu(*txq->hw_cons_ptr), 561 qed_chain_get_cons_idx(&txq->tx_pbl), 562 qed_chain_get_prod_idx(&txq->tx_pbl), jiffies); 563 if (!rc) 564 edev->ops->common->mfw_report(edev->cdev, 565 "Txq[%d]: SB[0x%04x] - IGU: prod %08x cons %08x CAU Tx %04x\n", 566 txq->index, fp->sb_info->igu_sb_id, 567 sb_dbg.igu_prod, sb_dbg.igu_cons, 568 sb_dbg.pi[TX_PI(txq->cos)]); 569 } 570 571 static void qede_tx_timeout(struct net_device *dev, unsigned int txqueue) 572 { 573 struct qede_dev *edev = netdev_priv(dev); 574 int i; 575 576 netif_carrier_off(dev); 577 DP_NOTICE(edev, "TX timeout on queue %u!\n", txqueue); 578 579 for_each_queue(i) { 580 struct qede_tx_queue *txq; 581 struct qede_fastpath *fp; 582 int cos; 583 584 fp = &edev->fp_array[i]; 585 if (!(fp->type & QEDE_FASTPATH_TX)) 586 continue; 587 588 for_each_cos_in_txq(edev, cos) { 589 txq = &fp->txq[cos]; 590 591 /* Dump basic metadata for all queues */ 592 qede_txq_fp_log_metadata(edev, fp, txq); 593 594 if (qed_chain_get_cons_idx(&txq->tx_pbl) != 595 qed_chain_get_prod_idx(&txq->tx_pbl)) 596 qede_tx_log_print(edev, fp, txq); 597 } 598 } 599 600 if (IS_VF(edev)) 601 return; 602 603 if (test_and_set_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags) || 604 edev->state == QEDE_STATE_RECOVERY) { 605 DP_INFO(edev, 606 "Avoid handling a Tx timeout while another HW error is being handled\n"); 607 return; 608 } 609 610 set_bit(QEDE_ERR_GET_DBG_INFO, &edev->err_flags); 611 set_bit(QEDE_SP_HW_ERR, &edev->sp_flags); 612 schedule_delayed_work(&edev->sp_task, 0); 613 } 614 615 static int qede_setup_tc(struct net_device *ndev, u8 num_tc) 616 { 617 struct qede_dev *edev = netdev_priv(ndev); 618 int cos, count, offset; 619 620 if (num_tc > edev->dev_info.num_tc) 621 return -EINVAL; 622 623 netdev_reset_tc(ndev); 624 netdev_set_num_tc(ndev, num_tc); 625 626 for_each_cos_in_txq(edev, cos) { 627 count = QEDE_TSS_COUNT(edev); 628 offset = cos * QEDE_TSS_COUNT(edev); 629 netdev_set_tc_queue(ndev, cos, count, offset); 630 } 631 632 return 0; 633 } 634 635 static int 636 qede_set_flower(struct qede_dev *edev, struct flow_cls_offload *f, 637 __be16 proto) 638 { 639 switch (f->command) { 640 case FLOW_CLS_REPLACE: 641 return qede_add_tc_flower_fltr(edev, proto, f); 642 case FLOW_CLS_DESTROY: 643 return qede_delete_flow_filter(edev, f->cookie); 644 default: 645 return -EOPNOTSUPP; 646 } 647 } 648 649 static int qede_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 650 void *cb_priv) 651 { 652 struct flow_cls_offload *f; 653 struct qede_dev *edev = cb_priv; 654 655 if (!tc_cls_can_offload_and_chain0(edev->ndev, type_data)) 656 return -EOPNOTSUPP; 657 658 switch (type) { 659 case TC_SETUP_CLSFLOWER: 660 f = type_data; 661 return qede_set_flower(edev, f, f->common.protocol); 662 default: 663 return -EOPNOTSUPP; 664 } 665 } 666 667 static LIST_HEAD(qede_block_cb_list); 668 669 static int 670 qede_setup_tc_offload(struct net_device *dev, enum tc_setup_type type, 671 void *type_data) 672 { 673 struct qede_dev *edev = netdev_priv(dev); 674 struct tc_mqprio_qopt *mqprio; 675 676 switch (type) { 677 case TC_SETUP_BLOCK: 678 return flow_block_cb_setup_simple(type_data, 679 &qede_block_cb_list, 680 qede_setup_tc_block_cb, 681 edev, edev, true); 682 case TC_SETUP_QDISC_MQPRIO: 683 mqprio = type_data; 684 685 mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; 686 return qede_setup_tc(dev, mqprio->num_tc); 687 default: 688 return -EOPNOTSUPP; 689 } 690 } 691 692 static const struct net_device_ops qede_netdev_ops = { 693 .ndo_open = qede_open, 694 .ndo_stop = qede_close, 695 .ndo_start_xmit = qede_start_xmit, 696 .ndo_select_queue = qede_select_queue, 697 .ndo_set_rx_mode = qede_set_rx_mode, 698 .ndo_set_mac_address = qede_set_mac_addr, 699 .ndo_validate_addr = eth_validate_addr, 700 .ndo_change_mtu = qede_change_mtu, 701 .ndo_tx_timeout = qede_tx_timeout, 702 #ifdef CONFIG_QED_SRIOV 703 .ndo_set_vf_mac = qede_set_vf_mac, 704 .ndo_set_vf_vlan = qede_set_vf_vlan, 705 .ndo_set_vf_trust = qede_set_vf_trust, 706 #endif 707 .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid, 708 .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid, 709 .ndo_fix_features = qede_fix_features, 710 .ndo_set_features = qede_set_features, 711 .ndo_get_stats64 = qede_get_stats64, 712 #ifdef CONFIG_QED_SRIOV 713 .ndo_set_vf_link_state = qede_set_vf_link_state, 714 .ndo_set_vf_spoofchk = qede_set_vf_spoofchk, 715 .ndo_get_vf_config = qede_get_vf_config, 716 .ndo_set_vf_rate = qede_set_vf_rate, 717 #endif 718 .ndo_features_check = qede_features_check, 719 .ndo_bpf = qede_xdp, 720 #ifdef CONFIG_RFS_ACCEL 721 .ndo_rx_flow_steer = qede_rx_flow_steer, 722 #endif 723 .ndo_xdp_xmit = qede_xdp_transmit, 724 .ndo_setup_tc = qede_setup_tc_offload, 725 .ndo_hwtstamp_get = qede_hwtstamp_get, 726 .ndo_hwtstamp_set = qede_hwtstamp_set, 727 }; 728 729 static const struct net_device_ops qede_netdev_vf_ops = { 730 .ndo_open = qede_open, 731 .ndo_stop = qede_close, 732 .ndo_start_xmit = qede_start_xmit, 733 .ndo_select_queue = qede_select_queue, 734 .ndo_set_rx_mode = qede_set_rx_mode, 735 .ndo_set_mac_address = qede_set_mac_addr, 736 .ndo_validate_addr = eth_validate_addr, 737 .ndo_change_mtu = qede_change_mtu, 738 .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid, 739 .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid, 740 .ndo_fix_features = qede_fix_features, 741 .ndo_set_features = qede_set_features, 742 .ndo_get_stats64 = qede_get_stats64, 743 .ndo_features_check = qede_features_check, 744 }; 745 746 static const struct net_device_ops qede_netdev_vf_xdp_ops = { 747 .ndo_open = qede_open, 748 .ndo_stop = qede_close, 749 .ndo_start_xmit = qede_start_xmit, 750 .ndo_select_queue = qede_select_queue, 751 .ndo_set_rx_mode = qede_set_rx_mode, 752 .ndo_set_mac_address = qede_set_mac_addr, 753 .ndo_validate_addr = eth_validate_addr, 754 .ndo_change_mtu = qede_change_mtu, 755 .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid, 756 .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid, 757 .ndo_fix_features = qede_fix_features, 758 .ndo_set_features = qede_set_features, 759 .ndo_get_stats64 = qede_get_stats64, 760 .ndo_features_check = qede_features_check, 761 .ndo_bpf = qede_xdp, 762 .ndo_xdp_xmit = qede_xdp_transmit, 763 }; 764 765 /* ------------------------------------------------------------------------- 766 * START OF PROBE / REMOVE 767 * ------------------------------------------------------------------------- 768 */ 769 770 static struct qede_dev *qede_alloc_etherdev(struct qed_dev *cdev, 771 struct pci_dev *pdev, 772 struct qed_dev_eth_info *info, 773 u32 dp_module, u8 dp_level) 774 { 775 struct net_device *ndev; 776 struct qede_dev *edev; 777 778 ndev = alloc_etherdev_mqs(sizeof(*edev), 779 info->num_queues * info->num_tc, 780 info->num_queues); 781 if (!ndev) { 782 pr_err("etherdev allocation failed\n"); 783 return NULL; 784 } 785 786 edev = netdev_priv(ndev); 787 edev->ndev = ndev; 788 edev->cdev = cdev; 789 edev->pdev = pdev; 790 edev->dp_module = dp_module; 791 edev->dp_level = dp_level; 792 edev->ops = qed_ops; 793 794 if (is_kdump_kernel()) { 795 edev->q_num_rx_buffers = NUM_RX_BDS_KDUMP_MIN; 796 edev->q_num_tx_buffers = NUM_TX_BDS_KDUMP_MIN; 797 } else { 798 edev->q_num_rx_buffers = NUM_RX_BDS_DEF; 799 edev->q_num_tx_buffers = NUM_TX_BDS_DEF; 800 } 801 802 DP_INFO(edev, "Allocated netdev with %d tx queues and %d rx queues\n", 803 info->num_queues, info->num_queues); 804 805 SET_NETDEV_DEV(ndev, &pdev->dev); 806 807 memset(&edev->stats, 0, sizeof(edev->stats)); 808 memcpy(&edev->dev_info, info, sizeof(*info)); 809 810 /* As ethtool doesn't have the ability to show WoL behavior as 811 * 'default', if device supports it declare it's enabled. 812 */ 813 if (edev->dev_info.common.wol_support) 814 edev->wol_enabled = true; 815 816 INIT_LIST_HEAD(&edev->vlan_list); 817 818 return edev; 819 } 820 821 static void qede_init_ndev(struct qede_dev *edev) 822 { 823 struct net_device *ndev = edev->ndev; 824 struct pci_dev *pdev = edev->pdev; 825 bool udp_tunnel_enable = false; 826 netdev_features_t hw_features; 827 828 pci_set_drvdata(pdev, ndev); 829 830 ndev->mem_start = edev->dev_info.common.pci_mem_start; 831 ndev->base_addr = ndev->mem_start; 832 ndev->mem_end = edev->dev_info.common.pci_mem_end; 833 ndev->irq = edev->dev_info.common.pci_irq; 834 835 ndev->watchdog_timeo = TX_TIMEOUT; 836 837 if (IS_VF(edev)) { 838 if (edev->dev_info.xdp_supported) 839 ndev->netdev_ops = &qede_netdev_vf_xdp_ops; 840 else 841 ndev->netdev_ops = &qede_netdev_vf_ops; 842 } else { 843 ndev->netdev_ops = &qede_netdev_ops; 844 } 845 846 qede_set_ethtool_ops(ndev); 847 848 ndev->priv_flags |= IFF_UNICAST_FLT; 849 850 /* user-changeble features */ 851 hw_features = NETIF_F_GRO | NETIF_F_GRO_HW | NETIF_F_SG | 852 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 853 NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_HW_TC; 854 855 if (edev->dev_info.common.b_arfs_capable) 856 hw_features |= NETIF_F_NTUPLE; 857 858 if (edev->dev_info.common.vxlan_enable || 859 edev->dev_info.common.geneve_enable) 860 udp_tunnel_enable = true; 861 862 if (udp_tunnel_enable || edev->dev_info.common.gre_enable) { 863 hw_features |= NETIF_F_TSO_ECN; 864 ndev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 865 NETIF_F_SG | NETIF_F_TSO | 866 NETIF_F_TSO_ECN | NETIF_F_TSO6 | 867 NETIF_F_RXCSUM; 868 } 869 870 if (udp_tunnel_enable) { 871 hw_features |= (NETIF_F_GSO_UDP_TUNNEL | 872 NETIF_F_GSO_UDP_TUNNEL_CSUM); 873 ndev->hw_enc_features |= (NETIF_F_GSO_UDP_TUNNEL | 874 NETIF_F_GSO_UDP_TUNNEL_CSUM); 875 876 qede_set_udp_tunnels(edev); 877 } 878 879 if (edev->dev_info.common.gre_enable) { 880 hw_features |= (NETIF_F_GSO_GRE | NETIF_F_GSO_GRE_CSUM); 881 ndev->hw_enc_features |= (NETIF_F_GSO_GRE | 882 NETIF_F_GSO_GRE_CSUM); 883 } 884 885 ndev->vlan_features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM | 886 NETIF_F_HIGHDMA; 887 ndev->features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM | 888 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HIGHDMA | 889 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_TX; 890 891 ndev->hw_features = hw_features; 892 893 ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT | 894 NETDEV_XDP_ACT_NDO_XMIT; 895 896 /* MTU range: 46 - 9600 */ 897 ndev->min_mtu = ETH_ZLEN - ETH_HLEN; 898 ndev->max_mtu = QEDE_MAX_JUMBO_PACKET_SIZE; 899 900 /* Set network device HW mac */ 901 eth_hw_addr_set(edev->ndev, edev->dev_info.common.hw_mac); 902 903 ndev->mtu = edev->dev_info.common.mtu; 904 } 905 906 /* This function converts from 32b param to two params of level and module 907 * Input 32b decoding: 908 * b31 - enable all NOTICE prints. NOTICE prints are for deviation from the 909 * 'happy' flow, e.g. memory allocation failed. 910 * b30 - enable all INFO prints. INFO prints are for major steps in the flow 911 * and provide important parameters. 912 * b29-b0 - per-module bitmap, where each bit enables VERBOSE prints of that 913 * module. VERBOSE prints are for tracking the specific flow in low level. 914 * 915 * Notice that the level should be that of the lowest required logs. 916 */ 917 void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level) 918 { 919 *p_dp_level = QED_LEVEL_NOTICE; 920 *p_dp_module = 0; 921 922 if (debug & QED_LOG_VERBOSE_MASK) { 923 *p_dp_level = QED_LEVEL_VERBOSE; 924 *p_dp_module = (debug & 0x3FFFFFFF); 925 } else if (debug & QED_LOG_INFO_MASK) { 926 *p_dp_level = QED_LEVEL_INFO; 927 } else if (debug & QED_LOG_NOTICE_MASK) { 928 *p_dp_level = QED_LEVEL_NOTICE; 929 } 930 } 931 932 static void qede_free_fp_array(struct qede_dev *edev) 933 { 934 if (edev->fp_array) { 935 struct qede_fastpath *fp; 936 int i; 937 938 for_each_queue(i) { 939 fp = &edev->fp_array[i]; 940 941 kfree(fp->sb_info); 942 /* Handle mem alloc failure case where qede_init_fp 943 * didn't register xdp_rxq_info yet. 944 * Implicit only (fp->type & QEDE_FASTPATH_RX) 945 */ 946 if (fp->rxq && xdp_rxq_info_is_reg(&fp->rxq->xdp_rxq)) 947 xdp_rxq_info_unreg(&fp->rxq->xdp_rxq); 948 kfree(fp->rxq); 949 kfree(fp->xdp_tx); 950 kfree(fp->txq); 951 } 952 kfree(edev->fp_array); 953 } 954 955 edev->num_queues = 0; 956 edev->fp_num_tx = 0; 957 edev->fp_num_rx = 0; 958 } 959 960 static int qede_alloc_fp_array(struct qede_dev *edev) 961 { 962 u8 fp_combined, fp_rx = edev->fp_num_rx; 963 struct qede_fastpath *fp; 964 int i; 965 966 edev->fp_array = kzalloc_objs(*edev->fp_array, QEDE_QUEUE_CNT(edev)); 967 if (!edev->fp_array) { 968 DP_NOTICE(edev, "fp array allocation failed\n"); 969 goto err; 970 } 971 972 if (!edev->coal_entry) { 973 edev->coal_entry = kzalloc_objs(*edev->coal_entry, 974 QEDE_MAX_RSS_CNT(edev)); 975 if (!edev->coal_entry) { 976 DP_ERR(edev, "coalesce entry allocation failed\n"); 977 goto err; 978 } 979 } 980 981 fp_combined = QEDE_QUEUE_CNT(edev) - fp_rx - edev->fp_num_tx; 982 983 /* Allocate the FP elements for Rx queues followed by combined and then 984 * the Tx. This ordering should be maintained so that the respective 985 * queues (Rx or Tx) will be together in the fastpath array and the 986 * associated ids will be sequential. 987 */ 988 for_each_queue(i) { 989 fp = &edev->fp_array[i]; 990 991 fp->sb_info = kzalloc_obj(*fp->sb_info); 992 if (!fp->sb_info) { 993 DP_NOTICE(edev, "sb info struct allocation failed\n"); 994 goto err; 995 } 996 997 if (fp_rx) { 998 fp->type = QEDE_FASTPATH_RX; 999 fp_rx--; 1000 } else if (fp_combined) { 1001 fp->type = QEDE_FASTPATH_COMBINED; 1002 fp_combined--; 1003 } else { 1004 fp->type = QEDE_FASTPATH_TX; 1005 } 1006 1007 if (fp->type & QEDE_FASTPATH_TX) { 1008 fp->txq = kzalloc_objs(*fp->txq, edev->dev_info.num_tc); 1009 if (!fp->txq) 1010 goto err; 1011 } 1012 1013 if (fp->type & QEDE_FASTPATH_RX) { 1014 fp->rxq = kzalloc_obj(*fp->rxq); 1015 if (!fp->rxq) 1016 goto err; 1017 1018 if (edev->xdp_prog) { 1019 fp->xdp_tx = kzalloc_obj(*fp->xdp_tx); 1020 if (!fp->xdp_tx) 1021 goto err; 1022 fp->type |= QEDE_FASTPATH_XDP; 1023 } 1024 } 1025 } 1026 1027 return 0; 1028 err: 1029 qede_free_fp_array(edev); 1030 return -ENOMEM; 1031 } 1032 1033 /* The qede lock is used to protect driver state change and driver flows that 1034 * are not reentrant. 1035 */ 1036 void __qede_lock(struct qede_dev *edev) 1037 { 1038 mutex_lock(&edev->qede_lock); 1039 } 1040 1041 void __qede_unlock(struct qede_dev *edev) 1042 { 1043 mutex_unlock(&edev->qede_lock); 1044 } 1045 1046 /* This version of the lock should be used when acquiring the RTNL lock is also 1047 * needed in addition to the internal qede lock. 1048 */ 1049 static void qede_lock(struct qede_dev *edev) 1050 { 1051 rtnl_lock(); 1052 __qede_lock(edev); 1053 } 1054 1055 static void qede_unlock(struct qede_dev *edev) 1056 { 1057 __qede_unlock(edev); 1058 rtnl_unlock(); 1059 } 1060 1061 static void qede_periodic_task(struct work_struct *work) 1062 { 1063 struct qede_dev *edev = container_of(work, struct qede_dev, 1064 periodic_task.work); 1065 1066 qede_fill_by_demand_stats(edev); 1067 schedule_delayed_work(&edev->periodic_task, edev->stats_coal_ticks); 1068 } 1069 1070 static void qede_init_periodic_task(struct qede_dev *edev) 1071 { 1072 INIT_DELAYED_WORK(&edev->periodic_task, qede_periodic_task); 1073 spin_lock_init(&edev->stats_lock); 1074 edev->stats_coal_usecs = USEC_PER_SEC; 1075 edev->stats_coal_ticks = usecs_to_jiffies(USEC_PER_SEC); 1076 } 1077 1078 static void qede_sp_task(struct work_struct *work) 1079 { 1080 struct qede_dev *edev = container_of(work, struct qede_dev, 1081 sp_task.work); 1082 1083 /* Disable execution of this deferred work once 1084 * qede removal is in progress, this stop any future 1085 * scheduling of sp_task. 1086 */ 1087 if (test_bit(QEDE_SP_DISABLE, &edev->sp_flags)) 1088 return; 1089 1090 /* The locking scheme depends on the specific flag: 1091 * In case of QEDE_SP_RECOVERY, acquiring the RTNL lock is required to 1092 * ensure that ongoing flows are ended and new ones are not started. 1093 * In other cases - only the internal qede lock should be acquired. 1094 */ 1095 1096 if (test_and_clear_bit(QEDE_SP_RECOVERY, &edev->sp_flags)) { 1097 cancel_delayed_work_sync(&edev->periodic_task); 1098 #ifdef CONFIG_QED_SRIOV 1099 /* SRIOV must be disabled outside the lock to avoid a deadlock. 1100 * The recovery of the active VFs is currently not supported. 1101 */ 1102 if (pci_num_vf(edev->pdev)) 1103 qede_sriov_configure(edev->pdev, 0); 1104 #endif 1105 qede_lock(edev); 1106 qede_recovery_handler(edev); 1107 qede_unlock(edev); 1108 } 1109 1110 __qede_lock(edev); 1111 1112 if (test_and_clear_bit(QEDE_SP_RX_MODE, &edev->sp_flags)) 1113 if (edev->state == QEDE_STATE_OPEN) 1114 qede_config_rx_mode(edev->ndev); 1115 1116 #ifdef CONFIG_RFS_ACCEL 1117 if (test_and_clear_bit(QEDE_SP_ARFS_CONFIG, &edev->sp_flags)) { 1118 if (edev->state == QEDE_STATE_OPEN) 1119 qede_process_arfs_filters(edev, false); 1120 } 1121 #endif 1122 if (test_and_clear_bit(QEDE_SP_HW_ERR, &edev->sp_flags)) 1123 qede_generic_hw_err_handler(edev); 1124 __qede_unlock(edev); 1125 1126 if (test_and_clear_bit(QEDE_SP_AER, &edev->sp_flags)) { 1127 #ifdef CONFIG_QED_SRIOV 1128 /* SRIOV must be disabled outside the lock to avoid a deadlock. 1129 * The recovery of the active VFs is currently not supported. 1130 */ 1131 if (pci_num_vf(edev->pdev)) 1132 qede_sriov_configure(edev->pdev, 0); 1133 #endif 1134 edev->ops->common->recovery_process(edev->cdev); 1135 } 1136 } 1137 1138 static void qede_update_pf_params(struct qed_dev *cdev) 1139 { 1140 struct qed_pf_params pf_params; 1141 u16 num_cons; 1142 1143 /* 64 rx + 64 tx + 64 XDP */ 1144 memset(&pf_params, 0, sizeof(struct qed_pf_params)); 1145 1146 /* 1 rx + 1 xdp + max tx cos */ 1147 num_cons = QED_MIN_L2_CONS; 1148 1149 pf_params.eth_pf_params.num_cons = (MAX_SB_PER_PF_MIMD - 1) * num_cons; 1150 1151 /* Same for VFs - make sure they'll have sufficient connections 1152 * to support XDP Tx queues. 1153 */ 1154 pf_params.eth_pf_params.num_vf_cons = 48; 1155 1156 pf_params.eth_pf_params.num_arfs_filters = QEDE_RFS_MAX_FLTR; 1157 qed_ops->common->update_pf_params(cdev, &pf_params); 1158 } 1159 1160 #define QEDE_FW_VER_STR_SIZE 80 1161 1162 static void qede_log_probe(struct qede_dev *edev) 1163 { 1164 struct qed_dev_info *p_dev_info = &edev->dev_info.common; 1165 u8 buf[QEDE_FW_VER_STR_SIZE]; 1166 size_t left_size; 1167 1168 snprintf(buf, QEDE_FW_VER_STR_SIZE, 1169 "Storm FW %d.%d.%d.%d, Management FW %d.%d.%d.%d", 1170 p_dev_info->fw_major, p_dev_info->fw_minor, p_dev_info->fw_rev, 1171 p_dev_info->fw_eng, 1172 (p_dev_info->mfw_rev & QED_MFW_VERSION_3_MASK) >> 1173 QED_MFW_VERSION_3_OFFSET, 1174 (p_dev_info->mfw_rev & QED_MFW_VERSION_2_MASK) >> 1175 QED_MFW_VERSION_2_OFFSET, 1176 (p_dev_info->mfw_rev & QED_MFW_VERSION_1_MASK) >> 1177 QED_MFW_VERSION_1_OFFSET, 1178 (p_dev_info->mfw_rev & QED_MFW_VERSION_0_MASK) >> 1179 QED_MFW_VERSION_0_OFFSET); 1180 1181 left_size = QEDE_FW_VER_STR_SIZE - strlen(buf); 1182 if (p_dev_info->mbi_version && left_size) 1183 snprintf(buf + strlen(buf), left_size, 1184 " [MBI %d.%d.%d]", 1185 (p_dev_info->mbi_version & QED_MBI_VERSION_2_MASK) >> 1186 QED_MBI_VERSION_2_OFFSET, 1187 (p_dev_info->mbi_version & QED_MBI_VERSION_1_MASK) >> 1188 QED_MBI_VERSION_1_OFFSET, 1189 (p_dev_info->mbi_version & QED_MBI_VERSION_0_MASK) >> 1190 QED_MBI_VERSION_0_OFFSET); 1191 1192 pr_info("qede %02x:%02x.%02x: %s [%s]\n", edev->pdev->bus->number, 1193 PCI_SLOT(edev->pdev->devfn), PCI_FUNC(edev->pdev->devfn), 1194 buf, edev->ndev->name); 1195 } 1196 1197 enum qede_probe_mode { 1198 QEDE_PROBE_NORMAL, 1199 QEDE_PROBE_RECOVERY, 1200 }; 1201 1202 static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level, 1203 bool is_vf, enum qede_probe_mode mode) 1204 { 1205 struct qed_probe_params probe_params; 1206 struct qed_slowpath_params sp_params; 1207 struct qed_dev_eth_info dev_info; 1208 struct qede_dev *edev; 1209 struct qed_dev *cdev; 1210 int rc; 1211 1212 if (unlikely(dp_level & QED_LEVEL_INFO)) 1213 pr_notice("Starting qede probe\n"); 1214 1215 memset(&probe_params, 0, sizeof(probe_params)); 1216 probe_params.protocol = QED_PROTOCOL_ETH; 1217 probe_params.dp_module = dp_module; 1218 probe_params.dp_level = dp_level; 1219 probe_params.is_vf = is_vf; 1220 probe_params.recov_in_prog = (mode == QEDE_PROBE_RECOVERY); 1221 cdev = qed_ops->common->probe(pdev, &probe_params); 1222 if (!cdev) { 1223 rc = -ENODEV; 1224 goto err0; 1225 } 1226 1227 qede_update_pf_params(cdev); 1228 1229 /* Start the Slowpath-process */ 1230 memset(&sp_params, 0, sizeof(sp_params)); 1231 sp_params.int_mode = QED_INT_MODE_MSIX; 1232 strscpy(sp_params.name, "qede LAN", QED_DRV_VER_STR_SIZE); 1233 rc = qed_ops->common->slowpath_start(cdev, &sp_params); 1234 if (rc) { 1235 pr_notice("Cannot start slowpath\n"); 1236 goto err1; 1237 } 1238 1239 /* Learn information crucial for qede to progress */ 1240 rc = qed_ops->fill_dev_info(cdev, &dev_info); 1241 if (rc) 1242 goto err2; 1243 1244 if (mode != QEDE_PROBE_RECOVERY) { 1245 edev = qede_alloc_etherdev(cdev, pdev, &dev_info, dp_module, 1246 dp_level); 1247 if (!edev) { 1248 rc = -ENOMEM; 1249 goto err2; 1250 } 1251 1252 edev->devlink = qed_ops->common->devlink_register(cdev); 1253 if (IS_ERR(edev->devlink)) { 1254 DP_NOTICE(edev, "Cannot register devlink\n"); 1255 rc = PTR_ERR(edev->devlink); 1256 edev->devlink = NULL; 1257 goto err3; 1258 } 1259 } else { 1260 struct net_device *ndev = pci_get_drvdata(pdev); 1261 struct qed_devlink *qdl; 1262 1263 edev = netdev_priv(ndev); 1264 qdl = devlink_priv(edev->devlink); 1265 qdl->cdev = cdev; 1266 edev->cdev = cdev; 1267 memset(&edev->stats, 0, sizeof(edev->stats)); 1268 memcpy(&edev->dev_info, &dev_info, sizeof(dev_info)); 1269 } 1270 1271 if (is_vf) 1272 set_bit(QEDE_FLAGS_IS_VF, &edev->flags); 1273 1274 qede_init_ndev(edev); 1275 1276 rc = qede_rdma_dev_add(edev, (mode == QEDE_PROBE_RECOVERY)); 1277 if (rc) 1278 goto err3; 1279 1280 if (mode != QEDE_PROBE_RECOVERY) { 1281 /* Prepare the lock prior to the registration of the netdev, 1282 * as once it's registered we might reach flows requiring it 1283 * [it's even possible to reach a flow needing it directly 1284 * from there, although it's unlikely]. 1285 */ 1286 INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task); 1287 mutex_init(&edev->qede_lock); 1288 qede_init_periodic_task(edev); 1289 1290 rc = register_netdev(edev->ndev); 1291 if (rc) { 1292 DP_NOTICE(edev, "Cannot register net-device\n"); 1293 goto err4; 1294 } 1295 } 1296 1297 edev->ops->common->set_name(cdev, edev->ndev->name); 1298 1299 /* PTP not supported on VFs */ 1300 if (!is_vf) 1301 qede_ptp_enable(edev); 1302 1303 edev->ops->register_ops(cdev, &qede_ll_ops, edev); 1304 1305 #ifdef CONFIG_DCB 1306 if (!IS_VF(edev)) 1307 qede_set_dcbnl_ops(edev->ndev); 1308 #endif 1309 1310 edev->rx_copybreak = QEDE_RX_HDR_SIZE; 1311 1312 qede_log_probe(edev); 1313 1314 /* retain user config (for example - after recovery) */ 1315 if (edev->stats_coal_usecs) 1316 schedule_delayed_work(&edev->periodic_task, 0); 1317 1318 return 0; 1319 1320 err4: 1321 qede_rdma_dev_remove(edev, (mode == QEDE_PROBE_RECOVERY)); 1322 err3: 1323 if (mode != QEDE_PROBE_RECOVERY) 1324 free_netdev(edev->ndev); 1325 else 1326 edev->cdev = NULL; 1327 err2: 1328 qed_ops->common->slowpath_stop(cdev); 1329 err1: 1330 qed_ops->common->remove(cdev); 1331 err0: 1332 return rc; 1333 } 1334 1335 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id) 1336 { 1337 bool is_vf = false; 1338 u32 dp_module = 0; 1339 u8 dp_level = 0; 1340 1341 switch ((enum qede_pci_private)id->driver_data) { 1342 case QEDE_PRIVATE_VF: 1343 if (debug & QED_LOG_VERBOSE_MASK) 1344 dev_err(&pdev->dev, "Probing a VF\n"); 1345 is_vf = true; 1346 break; 1347 default: 1348 if (debug & QED_LOG_VERBOSE_MASK) 1349 dev_err(&pdev->dev, "Probing a PF\n"); 1350 } 1351 1352 qede_config_debug(debug, &dp_module, &dp_level); 1353 1354 return __qede_probe(pdev, dp_module, dp_level, is_vf, 1355 QEDE_PROBE_NORMAL); 1356 } 1357 1358 enum qede_remove_mode { 1359 QEDE_REMOVE_NORMAL, 1360 QEDE_REMOVE_RECOVERY, 1361 }; 1362 1363 static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode) 1364 { 1365 struct net_device *ndev = pci_get_drvdata(pdev); 1366 struct qede_dev *edev; 1367 struct qed_dev *cdev; 1368 1369 if (!ndev) { 1370 dev_info(&pdev->dev, "Device has already been removed\n"); 1371 return; 1372 } 1373 1374 edev = netdev_priv(ndev); 1375 cdev = edev->cdev; 1376 1377 DP_INFO(edev, "Starting qede_remove\n"); 1378 1379 qede_rdma_dev_remove(edev, (mode == QEDE_REMOVE_RECOVERY)); 1380 1381 if (mode != QEDE_REMOVE_RECOVERY) { 1382 set_bit(QEDE_SP_DISABLE, &edev->sp_flags); 1383 unregister_netdev(ndev); 1384 1385 cancel_delayed_work_sync(&edev->sp_task); 1386 cancel_delayed_work_sync(&edev->periodic_task); 1387 1388 edev->ops->common->set_power_state(cdev, PCI_D0); 1389 1390 pci_set_drvdata(pdev, NULL); 1391 } 1392 1393 qede_ptp_disable(edev); 1394 1395 /* Use global ops since we've freed edev */ 1396 qed_ops->common->slowpath_stop(cdev); 1397 if (system_state == SYSTEM_POWER_OFF) 1398 return; 1399 1400 if (mode != QEDE_REMOVE_RECOVERY && edev->devlink) { 1401 qed_ops->common->devlink_unregister(edev->devlink); 1402 edev->devlink = NULL; 1403 } 1404 qed_ops->common->remove(cdev); 1405 edev->cdev = NULL; 1406 1407 /* Since this can happen out-of-sync with other flows, 1408 * don't release the netdevice until after slowpath stop 1409 * has been called to guarantee various other contexts 1410 * [e.g., QED register callbacks] won't break anything when 1411 * accessing the netdevice. 1412 */ 1413 if (mode != QEDE_REMOVE_RECOVERY) { 1414 kfree(edev->coal_entry); 1415 free_netdev(ndev); 1416 } 1417 1418 dev_info(&pdev->dev, "Ending qede_remove successfully\n"); 1419 } 1420 1421 static void qede_remove(struct pci_dev *pdev) 1422 { 1423 __qede_remove(pdev, QEDE_REMOVE_NORMAL); 1424 } 1425 1426 static void qede_shutdown(struct pci_dev *pdev) 1427 { 1428 __qede_remove(pdev, QEDE_REMOVE_NORMAL); 1429 } 1430 1431 /* ------------------------------------------------------------------------- 1432 * START OF LOAD / UNLOAD 1433 * ------------------------------------------------------------------------- 1434 */ 1435 1436 static int qede_set_num_queues(struct qede_dev *edev) 1437 { 1438 int rc; 1439 u16 rss_num; 1440 1441 /* Setup queues according to possible resources*/ 1442 if (edev->req_queues) 1443 rss_num = edev->req_queues; 1444 else 1445 rss_num = netif_get_num_default_rss_queues() * 1446 edev->dev_info.common.num_hwfns; 1447 1448 rss_num = min_t(u16, QEDE_MAX_RSS_CNT(edev), rss_num); 1449 1450 rc = edev->ops->common->set_fp_int(edev->cdev, rss_num); 1451 if (rc > 0) { 1452 /* Managed to request interrupts for our queues */ 1453 edev->num_queues = rc; 1454 DP_INFO(edev, "Managed %d [of %d] RSS queues\n", 1455 QEDE_QUEUE_CNT(edev), rss_num); 1456 rc = 0; 1457 } 1458 1459 edev->fp_num_tx = edev->req_num_tx; 1460 edev->fp_num_rx = edev->req_num_rx; 1461 1462 return rc; 1463 } 1464 1465 static void qede_free_mem_sb(struct qede_dev *edev, struct qed_sb_info *sb_info, 1466 u16 sb_id) 1467 { 1468 if (sb_info->sb_virt) { 1469 edev->ops->common->sb_release(edev->cdev, sb_info, sb_id, 1470 QED_SB_TYPE_L2_QUEUE); 1471 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_info->sb_virt), 1472 (void *)sb_info->sb_virt, sb_info->sb_phys); 1473 memset(sb_info, 0, sizeof(*sb_info)); 1474 } 1475 } 1476 1477 /* This function allocates fast-path status block memory */ 1478 static int qede_alloc_mem_sb(struct qede_dev *edev, 1479 struct qed_sb_info *sb_info, u16 sb_id) 1480 { 1481 struct status_block *sb_virt; 1482 dma_addr_t sb_phys; 1483 int rc; 1484 1485 sb_virt = dma_alloc_coherent(&edev->pdev->dev, 1486 sizeof(*sb_virt), &sb_phys, GFP_KERNEL); 1487 if (!sb_virt) { 1488 DP_ERR(edev, "Status block allocation failed\n"); 1489 return -ENOMEM; 1490 } 1491 1492 rc = edev->ops->common->sb_init(edev->cdev, sb_info, 1493 sb_virt, sb_phys, sb_id, 1494 QED_SB_TYPE_L2_QUEUE); 1495 if (rc) { 1496 DP_ERR(edev, "Status block initialization failed\n"); 1497 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_virt), 1498 sb_virt, sb_phys); 1499 return rc; 1500 } 1501 1502 return 0; 1503 } 1504 1505 static void qede_free_rx_buffers(struct qede_dev *edev, 1506 struct qede_rx_queue *rxq) 1507 { 1508 u16 i; 1509 1510 for (i = rxq->sw_rx_cons; i != rxq->sw_rx_prod; i++) { 1511 struct sw_rx_data *rx_buf; 1512 struct page *data; 1513 1514 rx_buf = &rxq->sw_rx_ring[i & NUM_RX_BDS_MAX]; 1515 data = rx_buf->data; 1516 1517 dma_unmap_page(&edev->pdev->dev, 1518 rx_buf->mapping, PAGE_SIZE, rxq->data_direction); 1519 1520 rx_buf->data = NULL; 1521 __free_page(data); 1522 } 1523 } 1524 1525 static void qede_free_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq) 1526 { 1527 /* Free rx buffers */ 1528 qede_free_rx_buffers(edev, rxq); 1529 1530 /* Free the parallel SW ring */ 1531 kfree(rxq->sw_rx_ring); 1532 1533 /* Free the real RQ ring used by FW */ 1534 edev->ops->common->chain_free(edev->cdev, &rxq->rx_bd_ring); 1535 edev->ops->common->chain_free(edev->cdev, &rxq->rx_comp_ring); 1536 } 1537 1538 static void qede_set_tpa_param(struct qede_rx_queue *rxq) 1539 { 1540 int i; 1541 1542 for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) { 1543 struct qede_agg_info *tpa_info = &rxq->tpa_info[i]; 1544 1545 tpa_info->state = QEDE_AGG_STATE_NONE; 1546 } 1547 } 1548 1549 /* This function allocates all memory needed per Rx queue */ 1550 static int qede_alloc_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq) 1551 { 1552 struct qed_chain_init_params params = { 1553 .cnt_type = QED_CHAIN_CNT_TYPE_U16, 1554 .num_elems = RX_RING_SIZE, 1555 }; 1556 struct qed_dev *cdev = edev->cdev; 1557 int i, rc, size; 1558 1559 rxq->num_rx_buffers = edev->q_num_rx_buffers; 1560 1561 rxq->rx_buf_size = NET_IP_ALIGN + ETH_OVERHEAD + edev->ndev->mtu; 1562 1563 rxq->rx_headroom = edev->xdp_prog ? XDP_PACKET_HEADROOM : NET_SKB_PAD; 1564 size = rxq->rx_headroom + 1565 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); 1566 1567 /* Make sure that the headroom and payload fit in a single page */ 1568 if (rxq->rx_buf_size + size > PAGE_SIZE) 1569 rxq->rx_buf_size = PAGE_SIZE - size; 1570 1571 /* Segment size to split a page in multiple equal parts, 1572 * unless XDP is used in which case we'd use the entire page. 1573 */ 1574 if (!edev->xdp_prog) { 1575 size = size + rxq->rx_buf_size; 1576 rxq->rx_buf_seg_size = roundup_pow_of_two(size); 1577 } else { 1578 rxq->rx_buf_seg_size = PAGE_SIZE; 1579 edev->ndev->features &= ~NETIF_F_GRO_HW; 1580 } 1581 1582 /* Allocate the parallel driver ring for Rx buffers */ 1583 size = sizeof(*rxq->sw_rx_ring) * RX_RING_SIZE; 1584 rxq->sw_rx_ring = kzalloc(size, GFP_KERNEL); 1585 if (!rxq->sw_rx_ring) { 1586 DP_ERR(edev, "Rx buffers ring allocation failed\n"); 1587 rc = -ENOMEM; 1588 goto err; 1589 } 1590 1591 /* Allocate FW Rx ring */ 1592 params.mode = QED_CHAIN_MODE_NEXT_PTR; 1593 params.intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE; 1594 params.elem_size = sizeof(struct eth_rx_bd); 1595 1596 rc = edev->ops->common->chain_alloc(cdev, &rxq->rx_bd_ring, ¶ms); 1597 if (rc) 1598 goto err; 1599 1600 /* Allocate FW completion ring */ 1601 params.mode = QED_CHAIN_MODE_PBL; 1602 params.intended_use = QED_CHAIN_USE_TO_CONSUME; 1603 params.elem_size = sizeof(union eth_rx_cqe); 1604 1605 rc = edev->ops->common->chain_alloc(cdev, &rxq->rx_comp_ring, ¶ms); 1606 if (rc) 1607 goto err; 1608 1609 /* Allocate buffers for the Rx ring */ 1610 rxq->filled_buffers = 0; 1611 for (i = 0; i < rxq->num_rx_buffers; i++) { 1612 rc = qede_alloc_rx_buffer(rxq, false); 1613 if (rc) { 1614 DP_ERR(edev, 1615 "Rx buffers allocation failed at index %d\n", i); 1616 goto err; 1617 } 1618 } 1619 1620 edev->gro_disable = !(edev->ndev->features & NETIF_F_GRO_HW); 1621 if (!edev->gro_disable) 1622 qede_set_tpa_param(rxq); 1623 err: 1624 return rc; 1625 } 1626 1627 static void qede_free_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq) 1628 { 1629 /* Free the parallel SW ring */ 1630 if (txq->is_xdp) 1631 kfree(txq->sw_tx_ring.xdp); 1632 else 1633 kfree(txq->sw_tx_ring.skbs); 1634 1635 /* Free the real RQ ring used by FW */ 1636 edev->ops->common->chain_free(edev->cdev, &txq->tx_pbl); 1637 } 1638 1639 /* This function allocates all memory needed per Tx queue */ 1640 static int qede_alloc_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq) 1641 { 1642 struct qed_chain_init_params params = { 1643 .mode = QED_CHAIN_MODE_PBL, 1644 .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE, 1645 .cnt_type = QED_CHAIN_CNT_TYPE_U16, 1646 .num_elems = edev->q_num_tx_buffers, 1647 .elem_size = sizeof(union eth_tx_bd_types), 1648 }; 1649 int size, rc; 1650 1651 txq->num_tx_buffers = edev->q_num_tx_buffers; 1652 1653 /* Allocate the parallel driver ring for Tx buffers */ 1654 if (txq->is_xdp) { 1655 size = sizeof(*txq->sw_tx_ring.xdp) * txq->num_tx_buffers; 1656 txq->sw_tx_ring.xdp = kzalloc(size, GFP_KERNEL); 1657 if (!txq->sw_tx_ring.xdp) 1658 goto err; 1659 } else { 1660 size = sizeof(*txq->sw_tx_ring.skbs) * txq->num_tx_buffers; 1661 txq->sw_tx_ring.skbs = kzalloc(size, GFP_KERNEL); 1662 if (!txq->sw_tx_ring.skbs) 1663 goto err; 1664 } 1665 1666 rc = edev->ops->common->chain_alloc(edev->cdev, &txq->tx_pbl, ¶ms); 1667 if (rc) 1668 goto err; 1669 1670 return 0; 1671 1672 err: 1673 qede_free_mem_txq(edev, txq); 1674 return -ENOMEM; 1675 } 1676 1677 /* This function frees all memory of a single fp */ 1678 static void qede_free_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp) 1679 { 1680 qede_free_mem_sb(edev, fp->sb_info, fp->id); 1681 1682 if (fp->type & QEDE_FASTPATH_RX) 1683 qede_free_mem_rxq(edev, fp->rxq); 1684 1685 if (fp->type & QEDE_FASTPATH_XDP) 1686 qede_free_mem_txq(edev, fp->xdp_tx); 1687 1688 if (fp->type & QEDE_FASTPATH_TX) { 1689 int cos; 1690 1691 for_each_cos_in_txq(edev, cos) 1692 qede_free_mem_txq(edev, &fp->txq[cos]); 1693 } 1694 } 1695 1696 /* This function allocates all memory needed for a single fp (i.e. an entity 1697 * which contains status block, one rx queue and/or multiple per-TC tx queues. 1698 */ 1699 static int qede_alloc_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp) 1700 { 1701 int rc = 0; 1702 1703 rc = qede_alloc_mem_sb(edev, fp->sb_info, fp->id); 1704 if (rc) 1705 goto out; 1706 1707 if (fp->type & QEDE_FASTPATH_RX) { 1708 rc = qede_alloc_mem_rxq(edev, fp->rxq); 1709 if (rc) 1710 goto out; 1711 } 1712 1713 if (fp->type & QEDE_FASTPATH_XDP) { 1714 rc = qede_alloc_mem_txq(edev, fp->xdp_tx); 1715 if (rc) 1716 goto out; 1717 } 1718 1719 if (fp->type & QEDE_FASTPATH_TX) { 1720 int cos; 1721 1722 for_each_cos_in_txq(edev, cos) { 1723 rc = qede_alloc_mem_txq(edev, &fp->txq[cos]); 1724 if (rc) 1725 goto out; 1726 } 1727 } 1728 1729 out: 1730 return rc; 1731 } 1732 1733 static void qede_free_mem_load(struct qede_dev *edev) 1734 { 1735 int i; 1736 1737 for_each_queue(i) { 1738 struct qede_fastpath *fp = &edev->fp_array[i]; 1739 1740 qede_free_mem_fp(edev, fp); 1741 } 1742 } 1743 1744 /* This function allocates all qede memory at NIC load. */ 1745 static int qede_alloc_mem_load(struct qede_dev *edev) 1746 { 1747 int rc = 0, queue_id; 1748 1749 for (queue_id = 0; queue_id < QEDE_QUEUE_CNT(edev); queue_id++) { 1750 struct qede_fastpath *fp = &edev->fp_array[queue_id]; 1751 1752 rc = qede_alloc_mem_fp(edev, fp); 1753 if (rc) { 1754 DP_ERR(edev, 1755 "Failed to allocate memory for fastpath - rss id = %d\n", 1756 queue_id); 1757 qede_free_mem_load(edev); 1758 return rc; 1759 } 1760 } 1761 1762 return 0; 1763 } 1764 1765 static void qede_empty_tx_queue(struct qede_dev *edev, 1766 struct qede_tx_queue *txq) 1767 { 1768 unsigned int pkts_compl = 0, bytes_compl = 0; 1769 struct netdev_queue *netdev_txq; 1770 int rc, len = 0; 1771 1772 netdev_txq = netdev_get_tx_queue(edev->ndev, txq->ndev_txq_id); 1773 1774 while (qed_chain_get_cons_idx(&txq->tx_pbl) != 1775 qed_chain_get_prod_idx(&txq->tx_pbl)) { 1776 DP_VERBOSE(edev, NETIF_MSG_IFDOWN, 1777 "Freeing a packet on tx queue[%d]: chain_cons 0x%x, chain_prod 0x%x\n", 1778 txq->index, qed_chain_get_cons_idx(&txq->tx_pbl), 1779 qed_chain_get_prod_idx(&txq->tx_pbl)); 1780 1781 rc = qede_free_tx_pkt(edev, txq, &len); 1782 if (rc) { 1783 DP_NOTICE(edev, 1784 "Failed to free a packet on tx queue[%d]: chain_cons 0x%x, chain_prod 0x%x\n", 1785 txq->index, 1786 qed_chain_get_cons_idx(&txq->tx_pbl), 1787 qed_chain_get_prod_idx(&txq->tx_pbl)); 1788 break; 1789 } 1790 1791 bytes_compl += len; 1792 pkts_compl++; 1793 txq->sw_tx_cons++; 1794 } 1795 1796 netdev_tx_completed_queue(netdev_txq, pkts_compl, bytes_compl); 1797 } 1798 1799 static void qede_empty_tx_queues(struct qede_dev *edev) 1800 { 1801 int i; 1802 1803 for_each_queue(i) 1804 if (edev->fp_array[i].type & QEDE_FASTPATH_TX) { 1805 int cos; 1806 1807 for_each_cos_in_txq(edev, cos) { 1808 struct qede_fastpath *fp; 1809 1810 fp = &edev->fp_array[i]; 1811 qede_empty_tx_queue(edev, 1812 &fp->txq[cos]); 1813 } 1814 } 1815 } 1816 1817 /* This function inits fp content and resets the SB, RXQ and TXQ structures */ 1818 static void qede_init_fp(struct qede_dev *edev) 1819 { 1820 int queue_id, rxq_index = 0, txq_index = 0; 1821 struct qede_fastpath *fp; 1822 bool init_xdp = false; 1823 1824 for_each_queue(queue_id) { 1825 fp = &edev->fp_array[queue_id]; 1826 1827 fp->edev = edev; 1828 fp->id = queue_id; 1829 1830 if (fp->type & QEDE_FASTPATH_XDP) { 1831 fp->xdp_tx->index = QEDE_TXQ_IDX_TO_XDP(edev, 1832 rxq_index); 1833 fp->xdp_tx->is_xdp = 1; 1834 1835 spin_lock_init(&fp->xdp_tx->xdp_tx_lock); 1836 init_xdp = true; 1837 } 1838 1839 if (fp->type & QEDE_FASTPATH_RX) { 1840 fp->rxq->rxq_id = rxq_index++; 1841 1842 /* Determine how to map buffers for this queue */ 1843 if (fp->type & QEDE_FASTPATH_XDP) 1844 fp->rxq->data_direction = DMA_BIDIRECTIONAL; 1845 else 1846 fp->rxq->data_direction = DMA_FROM_DEVICE; 1847 fp->rxq->dev = &edev->pdev->dev; 1848 1849 /* Driver have no error path from here */ 1850 WARN_ON(xdp_rxq_info_reg(&fp->rxq->xdp_rxq, edev->ndev, 1851 fp->rxq->rxq_id, 0) < 0); 1852 1853 if (xdp_rxq_info_reg_mem_model(&fp->rxq->xdp_rxq, 1854 MEM_TYPE_PAGE_ORDER0, 1855 NULL)) { 1856 DP_NOTICE(edev, 1857 "Failed to register XDP memory model\n"); 1858 } 1859 } 1860 1861 if (fp->type & QEDE_FASTPATH_TX) { 1862 int cos; 1863 1864 for_each_cos_in_txq(edev, cos) { 1865 struct qede_tx_queue *txq = &fp->txq[cos]; 1866 u16 ndev_tx_id; 1867 1868 txq->cos = cos; 1869 txq->index = txq_index; 1870 ndev_tx_id = QEDE_TXQ_TO_NDEV_TXQ_ID(edev, txq); 1871 txq->ndev_txq_id = ndev_tx_id; 1872 1873 if (edev->dev_info.is_legacy) 1874 txq->is_legacy = true; 1875 txq->dev = &edev->pdev->dev; 1876 } 1877 1878 txq_index++; 1879 } 1880 1881 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", 1882 edev->ndev->name, queue_id); 1883 } 1884 1885 if (init_xdp) { 1886 edev->total_xdp_queues = QEDE_RSS_COUNT(edev); 1887 DP_INFO(edev, "Total XDP queues: %u\n", edev->total_xdp_queues); 1888 } 1889 } 1890 1891 static int qede_set_real_num_queues(struct qede_dev *edev) 1892 { 1893 int rc = 0; 1894 1895 rc = netif_set_real_num_tx_queues(edev->ndev, 1896 QEDE_TSS_COUNT(edev) * 1897 edev->dev_info.num_tc); 1898 if (rc) { 1899 DP_NOTICE(edev, "Failed to set real number of Tx queues\n"); 1900 return rc; 1901 } 1902 1903 rc = netif_set_real_num_rx_queues(edev->ndev, QEDE_RSS_COUNT(edev)); 1904 if (rc) { 1905 DP_NOTICE(edev, "Failed to set real number of Rx queues\n"); 1906 return rc; 1907 } 1908 1909 return 0; 1910 } 1911 1912 static void qede_napi_disable_remove(struct qede_dev *edev) 1913 { 1914 int i; 1915 1916 for_each_queue(i) { 1917 napi_disable(&edev->fp_array[i].napi); 1918 1919 netif_napi_del(&edev->fp_array[i].napi); 1920 } 1921 } 1922 1923 static void qede_napi_add_enable(struct qede_dev *edev) 1924 { 1925 int i; 1926 1927 /* Add NAPI objects */ 1928 for_each_queue(i) { 1929 netif_napi_add(edev->ndev, &edev->fp_array[i].napi, qede_poll); 1930 napi_enable(&edev->fp_array[i].napi); 1931 } 1932 } 1933 1934 static void qede_sync_free_irqs(struct qede_dev *edev) 1935 { 1936 int i; 1937 1938 for (i = 0; i < edev->int_info.used_cnt; i++) { 1939 if (edev->int_info.msix_cnt) { 1940 free_irq(edev->int_info.msix[i].vector, 1941 &edev->fp_array[i]); 1942 } else { 1943 edev->ops->common->simd_handler_clean(edev->cdev, i); 1944 } 1945 } 1946 1947 edev->int_info.used_cnt = 0; 1948 edev->int_info.msix_cnt = 0; 1949 } 1950 1951 static int qede_req_msix_irqs(struct qede_dev *edev) 1952 { 1953 int i, rc; 1954 1955 /* Sanitize number of interrupts == number of prepared RSS queues */ 1956 if (QEDE_QUEUE_CNT(edev) > edev->int_info.msix_cnt) { 1957 DP_ERR(edev, 1958 "Interrupt mismatch: %d RSS queues > %d MSI-x vectors\n", 1959 QEDE_QUEUE_CNT(edev), edev->int_info.msix_cnt); 1960 return -EINVAL; 1961 } 1962 1963 for (i = 0; i < QEDE_QUEUE_CNT(edev); i++) { 1964 #ifdef CONFIG_RFS_ACCEL 1965 struct qede_fastpath *fp = &edev->fp_array[i]; 1966 1967 if (edev->ndev->rx_cpu_rmap && (fp->type & QEDE_FASTPATH_RX)) { 1968 rc = irq_cpu_rmap_add(edev->ndev->rx_cpu_rmap, 1969 edev->int_info.msix[i].vector); 1970 if (rc) { 1971 DP_ERR(edev, "Failed to add CPU rmap\n"); 1972 qede_free_arfs(edev); 1973 } 1974 } 1975 #endif 1976 rc = request_irq(edev->int_info.msix[i].vector, 1977 qede_msix_fp_int, 0, edev->fp_array[i].name, 1978 &edev->fp_array[i]); 1979 if (rc) { 1980 DP_ERR(edev, "Request fp %d irq failed\n", i); 1981 #ifdef CONFIG_RFS_ACCEL 1982 if (edev->ndev->rx_cpu_rmap) 1983 free_irq_cpu_rmap(edev->ndev->rx_cpu_rmap); 1984 1985 edev->ndev->rx_cpu_rmap = NULL; 1986 #endif 1987 qede_sync_free_irqs(edev); 1988 return rc; 1989 } 1990 DP_VERBOSE(edev, NETIF_MSG_INTR, 1991 "Requested fp irq for %s [entry %d]. Cookie is at %p\n", 1992 edev->fp_array[i].name, i, 1993 &edev->fp_array[i]); 1994 edev->int_info.used_cnt++; 1995 } 1996 1997 return 0; 1998 } 1999 2000 static void qede_simd_fp_handler(void *cookie) 2001 { 2002 struct qede_fastpath *fp = (struct qede_fastpath *)cookie; 2003 2004 napi_schedule_irqoff(&fp->napi); 2005 } 2006 2007 static int qede_setup_irqs(struct qede_dev *edev) 2008 { 2009 int i, rc = 0; 2010 2011 /* Learn Interrupt configuration */ 2012 rc = edev->ops->common->get_fp_int(edev->cdev, &edev->int_info); 2013 if (rc) 2014 return rc; 2015 2016 if (edev->int_info.msix_cnt) { 2017 rc = qede_req_msix_irqs(edev); 2018 if (rc) 2019 return rc; 2020 edev->ndev->irq = edev->int_info.msix[0].vector; 2021 } else { 2022 const struct qed_common_ops *ops; 2023 2024 /* qed should learn receive the RSS ids and callbacks */ 2025 ops = edev->ops->common; 2026 for (i = 0; i < QEDE_QUEUE_CNT(edev); i++) 2027 ops->simd_handler_config(edev->cdev, 2028 &edev->fp_array[i], i, 2029 qede_simd_fp_handler); 2030 edev->int_info.used_cnt = QEDE_QUEUE_CNT(edev); 2031 } 2032 return 0; 2033 } 2034 2035 static int qede_drain_txq(struct qede_dev *edev, 2036 struct qede_tx_queue *txq, bool allow_drain) 2037 { 2038 int rc, cnt = 1000; 2039 2040 while (txq->sw_tx_cons != txq->sw_tx_prod) { 2041 if (!cnt) { 2042 if (allow_drain) { 2043 DP_NOTICE(edev, 2044 "Tx queue[%d] is stuck, requesting MCP to drain\n", 2045 txq->index); 2046 rc = edev->ops->common->drain(edev->cdev); 2047 if (rc) 2048 return rc; 2049 return qede_drain_txq(edev, txq, false); 2050 } 2051 DP_NOTICE(edev, 2052 "Timeout waiting for tx queue[%d]: PROD=%d, CONS=%d\n", 2053 txq->index, txq->sw_tx_prod, 2054 txq->sw_tx_cons); 2055 return -ENODEV; 2056 } 2057 cnt--; 2058 usleep_range(1000, 2000); 2059 barrier(); 2060 } 2061 2062 /* FW finished processing, wait for HW to transmit all tx packets */ 2063 usleep_range(1000, 2000); 2064 2065 return 0; 2066 } 2067 2068 static int qede_stop_txq(struct qede_dev *edev, 2069 struct qede_tx_queue *txq, int rss_id) 2070 { 2071 /* delete doorbell from doorbell recovery mechanism */ 2072 edev->ops->common->db_recovery_del(edev->cdev, txq->doorbell_addr, 2073 &txq->tx_db); 2074 2075 return edev->ops->q_tx_stop(edev->cdev, rss_id, txq->handle); 2076 } 2077 2078 static int qede_stop_queues(struct qede_dev *edev) 2079 { 2080 struct qed_update_vport_params *vport_update_params; 2081 struct qed_dev *cdev = edev->cdev; 2082 struct qede_fastpath *fp; 2083 int rc, i; 2084 2085 /* Disable the vport */ 2086 vport_update_params = vzalloc(sizeof(*vport_update_params)); 2087 if (!vport_update_params) 2088 return -ENOMEM; 2089 2090 vport_update_params->vport_id = 0; 2091 vport_update_params->update_vport_active_flg = 1; 2092 vport_update_params->vport_active_flg = 0; 2093 vport_update_params->update_rss_flg = 0; 2094 2095 rc = edev->ops->vport_update(cdev, vport_update_params); 2096 vfree(vport_update_params); 2097 2098 if (rc) { 2099 DP_ERR(edev, "Failed to update vport\n"); 2100 return rc; 2101 } 2102 2103 /* Flush Tx queues. If needed, request drain from MCP */ 2104 for_each_queue(i) { 2105 fp = &edev->fp_array[i]; 2106 2107 if (fp->type & QEDE_FASTPATH_TX) { 2108 int cos; 2109 2110 for_each_cos_in_txq(edev, cos) { 2111 rc = qede_drain_txq(edev, &fp->txq[cos], true); 2112 if (rc) 2113 return rc; 2114 } 2115 } 2116 2117 if (fp->type & QEDE_FASTPATH_XDP) { 2118 rc = qede_drain_txq(edev, fp->xdp_tx, true); 2119 if (rc) 2120 return rc; 2121 } 2122 } 2123 2124 /* Stop all Queues in reverse order */ 2125 for (i = QEDE_QUEUE_CNT(edev) - 1; i >= 0; i--) { 2126 fp = &edev->fp_array[i]; 2127 2128 /* Stop the Tx Queue(s) */ 2129 if (fp->type & QEDE_FASTPATH_TX) { 2130 int cos; 2131 2132 for_each_cos_in_txq(edev, cos) { 2133 rc = qede_stop_txq(edev, &fp->txq[cos], i); 2134 if (rc) 2135 return rc; 2136 } 2137 } 2138 2139 /* Stop the Rx Queue */ 2140 if (fp->type & QEDE_FASTPATH_RX) { 2141 rc = edev->ops->q_rx_stop(cdev, i, fp->rxq->handle); 2142 if (rc) { 2143 DP_ERR(edev, "Failed to stop RXQ #%d\n", i); 2144 return rc; 2145 } 2146 } 2147 2148 /* Stop the XDP forwarding queue */ 2149 if (fp->type & QEDE_FASTPATH_XDP) { 2150 rc = qede_stop_txq(edev, fp->xdp_tx, i); 2151 if (rc) 2152 return rc; 2153 2154 bpf_prog_put(fp->rxq->xdp_prog); 2155 } 2156 } 2157 2158 /* Stop the vport */ 2159 rc = edev->ops->vport_stop(cdev, 0); 2160 if (rc) 2161 DP_ERR(edev, "Failed to stop VPORT\n"); 2162 2163 return rc; 2164 } 2165 2166 static int qede_start_txq(struct qede_dev *edev, 2167 struct qede_fastpath *fp, 2168 struct qede_tx_queue *txq, u8 rss_id, u16 sb_idx) 2169 { 2170 dma_addr_t phys_table = qed_chain_get_pbl_phys(&txq->tx_pbl); 2171 u32 page_cnt = qed_chain_get_page_cnt(&txq->tx_pbl); 2172 struct qed_queue_start_common_params params; 2173 struct qed_txq_start_ret_params ret_params; 2174 int rc; 2175 2176 memset(¶ms, 0, sizeof(params)); 2177 memset(&ret_params, 0, sizeof(ret_params)); 2178 2179 /* Let the XDP queue share the queue-zone with one of the regular txq. 2180 * We don't really care about its coalescing. 2181 */ 2182 if (txq->is_xdp) 2183 params.queue_id = QEDE_TXQ_XDP_TO_IDX(edev, txq); 2184 else 2185 params.queue_id = txq->index; 2186 2187 params.p_sb = fp->sb_info; 2188 params.sb_idx = sb_idx; 2189 params.tc = txq->cos; 2190 2191 rc = edev->ops->q_tx_start(edev->cdev, rss_id, ¶ms, phys_table, 2192 page_cnt, &ret_params); 2193 if (rc) { 2194 DP_ERR(edev, "Start TXQ #%d failed %d\n", txq->index, rc); 2195 return rc; 2196 } 2197 2198 txq->doorbell_addr = ret_params.p_doorbell; 2199 txq->handle = ret_params.p_handle; 2200 2201 /* Determine the FW consumer address associated */ 2202 txq->hw_cons_ptr = &fp->sb_info->sb_virt->pi_array[sb_idx]; 2203 2204 /* Prepare the doorbell parameters */ 2205 SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_DEST, DB_DEST_XCM); 2206 SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_CMD, DB_AGG_CMD_SET); 2207 SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_VAL_SEL, 2208 DQ_XCM_ETH_TX_BD_PROD_CMD); 2209 txq->tx_db.data.agg_flags = DQ_XCM_ETH_DQ_CF_CMD; 2210 2211 /* register doorbell with doorbell recovery mechanism */ 2212 rc = edev->ops->common->db_recovery_add(edev->cdev, txq->doorbell_addr, 2213 &txq->tx_db, DB_REC_WIDTH_32B, 2214 DB_REC_KERNEL); 2215 2216 return rc; 2217 } 2218 2219 static int qede_start_queues(struct qede_dev *edev, bool clear_stats) 2220 { 2221 int vlan_removal_en = 1; 2222 struct qed_dev *cdev = edev->cdev; 2223 struct qed_dev_info *qed_info = &edev->dev_info.common; 2224 struct qed_update_vport_params *vport_update_params; 2225 struct qed_queue_start_common_params q_params; 2226 struct qed_start_vport_params start = {0}; 2227 int rc, i; 2228 2229 if (!edev->num_queues) { 2230 DP_ERR(edev, 2231 "Cannot update V-VPORT as active as there are no Rx queues\n"); 2232 return -EINVAL; 2233 } 2234 2235 vport_update_params = vzalloc(sizeof(*vport_update_params)); 2236 if (!vport_update_params) 2237 return -ENOMEM; 2238 2239 start.handle_ptp_pkts = !!(edev->ptp); 2240 start.gro_enable = !edev->gro_disable; 2241 start.mtu = edev->ndev->mtu; 2242 start.vport_id = 0; 2243 start.drop_ttl0 = true; 2244 start.remove_inner_vlan = vlan_removal_en; 2245 start.clear_stats = clear_stats; 2246 2247 rc = edev->ops->vport_start(cdev, &start); 2248 2249 if (rc) { 2250 DP_ERR(edev, "Start V-PORT failed %d\n", rc); 2251 goto out; 2252 } 2253 2254 DP_VERBOSE(edev, NETIF_MSG_IFUP, 2255 "Start vport ramrod passed, vport_id = %d, MTU = %d, vlan_removal_en = %d\n", 2256 start.vport_id, edev->ndev->mtu + 0xe, vlan_removal_en); 2257 2258 for_each_queue(i) { 2259 struct qede_fastpath *fp = &edev->fp_array[i]; 2260 dma_addr_t p_phys_table; 2261 u32 page_cnt; 2262 2263 if (fp->type & QEDE_FASTPATH_RX) { 2264 struct qed_rxq_start_ret_params ret_params; 2265 struct qede_rx_queue *rxq = fp->rxq; 2266 __le16 *val; 2267 2268 memset(&ret_params, 0, sizeof(ret_params)); 2269 memset(&q_params, 0, sizeof(q_params)); 2270 q_params.queue_id = rxq->rxq_id; 2271 q_params.vport_id = 0; 2272 q_params.p_sb = fp->sb_info; 2273 q_params.sb_idx = RX_PI; 2274 2275 p_phys_table = 2276 qed_chain_get_pbl_phys(&rxq->rx_comp_ring); 2277 page_cnt = qed_chain_get_page_cnt(&rxq->rx_comp_ring); 2278 2279 rc = edev->ops->q_rx_start(cdev, i, &q_params, 2280 rxq->rx_buf_size, 2281 rxq->rx_bd_ring.p_phys_addr, 2282 p_phys_table, 2283 page_cnt, &ret_params); 2284 if (rc) { 2285 DP_ERR(edev, "Start RXQ #%d failed %d\n", i, 2286 rc); 2287 goto out; 2288 } 2289 2290 /* Use the return parameters */ 2291 rxq->hw_rxq_prod_addr = ret_params.p_prod; 2292 rxq->handle = ret_params.p_handle; 2293 2294 val = &fp->sb_info->sb_virt->pi_array[RX_PI]; 2295 rxq->hw_cons_ptr = val; 2296 2297 qede_update_rx_prod(edev, rxq); 2298 } 2299 2300 if (fp->type & QEDE_FASTPATH_XDP) { 2301 rc = qede_start_txq(edev, fp, fp->xdp_tx, i, XDP_PI); 2302 if (rc) 2303 goto out; 2304 2305 bpf_prog_add(edev->xdp_prog, 1); 2306 fp->rxq->xdp_prog = edev->xdp_prog; 2307 } 2308 2309 if (fp->type & QEDE_FASTPATH_TX) { 2310 int cos; 2311 2312 for_each_cos_in_txq(edev, cos) { 2313 rc = qede_start_txq(edev, fp, &fp->txq[cos], i, 2314 TX_PI(cos)); 2315 if (rc) 2316 goto out; 2317 } 2318 } 2319 } 2320 2321 /* Prepare and send the vport enable */ 2322 vport_update_params->vport_id = start.vport_id; 2323 vport_update_params->update_vport_active_flg = 1; 2324 vport_update_params->vport_active_flg = 1; 2325 2326 if ((qed_info->b_inter_pf_switch || pci_num_vf(edev->pdev)) && 2327 qed_info->tx_switching) { 2328 vport_update_params->update_tx_switching_flg = 1; 2329 vport_update_params->tx_switching_flg = 1; 2330 } 2331 2332 qede_fill_rss_params(edev, &vport_update_params->rss_params, 2333 &vport_update_params->update_rss_flg); 2334 2335 rc = edev->ops->vport_update(cdev, vport_update_params); 2336 if (rc) 2337 DP_ERR(edev, "Update V-PORT failed %d\n", rc); 2338 2339 out: 2340 vfree(vport_update_params); 2341 return rc; 2342 } 2343 2344 enum qede_unload_mode { 2345 QEDE_UNLOAD_NORMAL, 2346 QEDE_UNLOAD_RECOVERY, 2347 }; 2348 2349 static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode, 2350 bool is_locked) 2351 { 2352 struct qed_link_params link_params; 2353 int rc; 2354 2355 DP_INFO(edev, "Starting qede unload\n"); 2356 2357 if (!is_locked) 2358 __qede_lock(edev); 2359 2360 clear_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags); 2361 2362 if (mode != QEDE_UNLOAD_RECOVERY) 2363 edev->state = QEDE_STATE_CLOSED; 2364 2365 qede_rdma_dev_event_close(edev); 2366 2367 /* Close OS Tx */ 2368 netif_tx_disable(edev->ndev); 2369 netif_carrier_off(edev->ndev); 2370 2371 if (mode != QEDE_UNLOAD_RECOVERY) { 2372 /* Reset the link */ 2373 memset(&link_params, 0, sizeof(link_params)); 2374 link_params.link_up = false; 2375 edev->ops->common->set_link(edev->cdev, &link_params); 2376 2377 rc = qede_stop_queues(edev); 2378 if (rc) { 2379 #ifdef CONFIG_RFS_ACCEL 2380 if (edev->dev_info.common.b_arfs_capable) { 2381 qede_poll_for_freeing_arfs_filters(edev); 2382 if (edev->ndev->rx_cpu_rmap) 2383 free_irq_cpu_rmap(edev->ndev->rx_cpu_rmap); 2384 2385 edev->ndev->rx_cpu_rmap = NULL; 2386 } 2387 #endif 2388 qede_sync_free_irqs(edev); 2389 goto out; 2390 } 2391 2392 DP_INFO(edev, "Stopped Queues\n"); 2393 } 2394 2395 qede_vlan_mark_nonconfigured(edev); 2396 edev->ops->fastpath_stop(edev->cdev); 2397 2398 if (edev->dev_info.common.b_arfs_capable) { 2399 qede_poll_for_freeing_arfs_filters(edev); 2400 qede_free_arfs(edev); 2401 } 2402 2403 /* Release the interrupts */ 2404 qede_sync_free_irqs(edev); 2405 edev->ops->common->set_fp_int(edev->cdev, 0); 2406 2407 qede_napi_disable_remove(edev); 2408 2409 if (mode == QEDE_UNLOAD_RECOVERY) 2410 qede_empty_tx_queues(edev); 2411 2412 qede_free_mem_load(edev); 2413 qede_free_fp_array(edev); 2414 2415 out: 2416 if (!is_locked) 2417 __qede_unlock(edev); 2418 2419 if (mode != QEDE_UNLOAD_RECOVERY) 2420 DP_NOTICE(edev, "Link is down\n"); 2421 2422 edev->ptp_skip_txts = 0; 2423 2424 DP_INFO(edev, "Ending qede unload\n"); 2425 } 2426 2427 enum qede_load_mode { 2428 QEDE_LOAD_NORMAL, 2429 QEDE_LOAD_RELOAD, 2430 QEDE_LOAD_RECOVERY, 2431 }; 2432 2433 static int qede_load(struct qede_dev *edev, enum qede_load_mode mode, 2434 bool is_locked) 2435 { 2436 struct qed_link_params link_params; 2437 struct ethtool_coalesce coal = {}; 2438 u8 num_tc; 2439 int rc, i; 2440 2441 DP_INFO(edev, "Starting qede load\n"); 2442 2443 if (!is_locked) 2444 __qede_lock(edev); 2445 2446 rc = qede_set_num_queues(edev); 2447 if (rc) 2448 goto out; 2449 2450 rc = qede_alloc_fp_array(edev); 2451 if (rc) 2452 goto out; 2453 2454 qede_init_fp(edev); 2455 2456 rc = qede_alloc_mem_load(edev); 2457 if (rc) 2458 goto err1; 2459 DP_INFO(edev, "Allocated %d Rx, %d Tx queues\n", 2460 QEDE_RSS_COUNT(edev), QEDE_TSS_COUNT(edev)); 2461 2462 rc = qede_set_real_num_queues(edev); 2463 if (rc) 2464 goto err2; 2465 2466 if (qede_alloc_arfs(edev)) { 2467 edev->ndev->features &= ~NETIF_F_NTUPLE; 2468 edev->dev_info.common.b_arfs_capable = false; 2469 } 2470 2471 qede_napi_add_enable(edev); 2472 DP_INFO(edev, "Napi added and enabled\n"); 2473 2474 rc = qede_setup_irqs(edev); 2475 if (rc) 2476 goto err3; 2477 DP_INFO(edev, "Setup IRQs succeeded\n"); 2478 2479 rc = qede_start_queues(edev, mode != QEDE_LOAD_RELOAD); 2480 if (rc) 2481 goto err4; 2482 DP_INFO(edev, "Start VPORT, RXQ and TXQ succeeded\n"); 2483 2484 num_tc = netdev_get_num_tc(edev->ndev); 2485 num_tc = num_tc ? num_tc : edev->dev_info.num_tc; 2486 qede_setup_tc(edev->ndev, num_tc); 2487 2488 /* Program un-configured VLANs */ 2489 qede_configure_vlan_filters(edev); 2490 2491 set_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags); 2492 2493 /* Ask for link-up using current configuration */ 2494 memset(&link_params, 0, sizeof(link_params)); 2495 link_params.link_up = true; 2496 edev->ops->common->set_link(edev->cdev, &link_params); 2497 2498 edev->state = QEDE_STATE_OPEN; 2499 2500 coal.rx_coalesce_usecs = QED_DEFAULT_RX_USECS; 2501 coal.tx_coalesce_usecs = QED_DEFAULT_TX_USECS; 2502 2503 for_each_queue(i) { 2504 if (edev->coal_entry[i].isvalid) { 2505 coal.rx_coalesce_usecs = edev->coal_entry[i].rxc; 2506 coal.tx_coalesce_usecs = edev->coal_entry[i].txc; 2507 } 2508 __qede_unlock(edev); 2509 qede_set_per_coalesce(edev->ndev, i, &coal); 2510 __qede_lock(edev); 2511 } 2512 DP_INFO(edev, "Ending successfully qede load\n"); 2513 2514 goto out; 2515 err4: 2516 qede_sync_free_irqs(edev); 2517 err3: 2518 qede_napi_disable_remove(edev); 2519 err2: 2520 qede_free_mem_load(edev); 2521 err1: 2522 edev->ops->common->set_fp_int(edev->cdev, 0); 2523 qede_free_fp_array(edev); 2524 edev->num_queues = 0; 2525 edev->fp_num_tx = 0; 2526 edev->fp_num_rx = 0; 2527 out: 2528 if (!is_locked) 2529 __qede_unlock(edev); 2530 2531 return rc; 2532 } 2533 2534 /* 'func' should be able to run between unload and reload assuming interface 2535 * is actually running, or afterwards in case it's currently DOWN. 2536 */ 2537 void qede_reload(struct qede_dev *edev, 2538 struct qede_reload_args *args, bool is_locked) 2539 { 2540 if (!is_locked) 2541 __qede_lock(edev); 2542 2543 /* Since qede_lock is held, internal state wouldn't change even 2544 * if netdev state would start transitioning. Check whether current 2545 * internal configuration indicates device is up, then reload. 2546 */ 2547 if (edev->state == QEDE_STATE_OPEN) { 2548 qede_unload(edev, QEDE_UNLOAD_NORMAL, true); 2549 if (args) 2550 args->func(edev, args); 2551 qede_load(edev, QEDE_LOAD_RELOAD, true); 2552 2553 /* Since no one is going to do it for us, re-configure */ 2554 qede_config_rx_mode(edev->ndev); 2555 } else if (args) { 2556 args->func(edev, args); 2557 } 2558 2559 if (!is_locked) 2560 __qede_unlock(edev); 2561 } 2562 2563 /* called with rtnl_lock */ 2564 static int qede_open(struct net_device *ndev) 2565 { 2566 struct qede_dev *edev = netdev_priv(ndev); 2567 int rc; 2568 2569 netif_carrier_off(ndev); 2570 2571 edev->ops->common->set_power_state(edev->cdev, PCI_D0); 2572 2573 rc = qede_load(edev, QEDE_LOAD_NORMAL, false); 2574 if (rc) 2575 return rc; 2576 2577 udp_tunnel_nic_reset_ntf(ndev); 2578 2579 edev->ops->common->update_drv_state(edev->cdev, true); 2580 2581 return 0; 2582 } 2583 2584 static int qede_close(struct net_device *ndev) 2585 { 2586 struct qede_dev *edev = netdev_priv(ndev); 2587 2588 qede_unload(edev, QEDE_UNLOAD_NORMAL, false); 2589 2590 if (edev->cdev) 2591 edev->ops->common->update_drv_state(edev->cdev, false); 2592 2593 return 0; 2594 } 2595 2596 static void qede_link_update(void *dev, struct qed_link_output *link) 2597 { 2598 struct qede_dev *edev = dev; 2599 2600 if (!test_bit(QEDE_FLAGS_LINK_REQUESTED, &edev->flags)) { 2601 DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not ready\n"); 2602 return; 2603 } 2604 2605 if (link->link_up) { 2606 if (!netif_carrier_ok(edev->ndev)) { 2607 DP_NOTICE(edev, "Link is up\n"); 2608 netif_tx_start_all_queues(edev->ndev); 2609 netif_carrier_on(edev->ndev); 2610 qede_rdma_dev_event_open(edev); 2611 } 2612 } else { 2613 if (netif_carrier_ok(edev->ndev)) { 2614 DP_NOTICE(edev, "Link is down\n"); 2615 netif_tx_disable(edev->ndev); 2616 netif_carrier_off(edev->ndev); 2617 qede_rdma_dev_event_close(edev); 2618 } 2619 } 2620 } 2621 2622 static void qede_schedule_recovery_handler(void *dev) 2623 { 2624 struct qede_dev *edev = dev; 2625 2626 if (edev->state == QEDE_STATE_RECOVERY) { 2627 DP_NOTICE(edev, 2628 "Avoid scheduling a recovery handling since already in recovery state\n"); 2629 return; 2630 } 2631 2632 set_bit(QEDE_SP_RECOVERY, &edev->sp_flags); 2633 schedule_delayed_work(&edev->sp_task, 0); 2634 2635 DP_INFO(edev, "Scheduled a recovery handler\n"); 2636 } 2637 2638 static void qede_recovery_failed(struct qede_dev *edev) 2639 { 2640 netdev_err(edev->ndev, "Recovery handling has failed. Power cycle is needed.\n"); 2641 2642 netif_device_detach(edev->ndev); 2643 2644 if (edev->cdev) 2645 edev->ops->common->set_power_state(edev->cdev, PCI_D3hot); 2646 } 2647 2648 static void qede_recovery_handler(struct qede_dev *edev) 2649 { 2650 u32 curr_state = edev->state; 2651 int rc; 2652 2653 DP_NOTICE(edev, "Starting a recovery process\n"); 2654 2655 /* No need to acquire first the qede_lock since is done by qede_sp_task 2656 * before calling this function. 2657 */ 2658 edev->state = QEDE_STATE_RECOVERY; 2659 2660 edev->ops->common->recovery_prolog(edev->cdev); 2661 2662 if (curr_state == QEDE_STATE_OPEN) 2663 qede_unload(edev, QEDE_UNLOAD_RECOVERY, true); 2664 2665 __qede_remove(edev->pdev, QEDE_REMOVE_RECOVERY); 2666 2667 rc = __qede_probe(edev->pdev, edev->dp_module, edev->dp_level, 2668 IS_VF(edev), QEDE_PROBE_RECOVERY); 2669 if (rc) { 2670 edev->cdev = NULL; 2671 goto err; 2672 } 2673 2674 if (curr_state == QEDE_STATE_OPEN) { 2675 rc = qede_load(edev, QEDE_LOAD_RECOVERY, true); 2676 if (rc) 2677 goto err; 2678 2679 qede_config_rx_mode(edev->ndev); 2680 udp_tunnel_nic_reset_ntf(edev->ndev); 2681 } 2682 2683 edev->state = curr_state; 2684 2685 DP_NOTICE(edev, "Recovery handling is done\n"); 2686 2687 return; 2688 2689 err: 2690 qede_recovery_failed(edev); 2691 } 2692 2693 static void qede_atomic_hw_err_handler(struct qede_dev *edev) 2694 { 2695 struct qed_dev *cdev = edev->cdev; 2696 2697 DP_NOTICE(edev, 2698 "Generic non-sleepable HW error handling started - err_flags 0x%lx\n", 2699 edev->err_flags); 2700 2701 /* Get a call trace of the flow that led to the error */ 2702 WARN_ON(test_bit(QEDE_ERR_WARN, &edev->err_flags)); 2703 2704 /* Prevent HW attentions from being reasserted */ 2705 if (test_bit(QEDE_ERR_ATTN_CLR_EN, &edev->err_flags)) 2706 edev->ops->common->attn_clr_enable(cdev, true); 2707 2708 DP_NOTICE(edev, "Generic non-sleepable HW error handling is done\n"); 2709 } 2710 2711 static void qede_generic_hw_err_handler(struct qede_dev *edev) 2712 { 2713 DP_NOTICE(edev, 2714 "Generic sleepable HW error handling started - err_flags 0x%lx\n", 2715 edev->err_flags); 2716 2717 if (edev->devlink) { 2718 DP_NOTICE(edev, "Reporting fatal error to devlink\n"); 2719 edev->ops->common->report_fatal_error(edev->devlink, edev->last_err_type); 2720 } 2721 2722 clear_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags); 2723 2724 DP_NOTICE(edev, "Generic sleepable HW error handling is done\n"); 2725 } 2726 2727 static void qede_set_hw_err_flags(struct qede_dev *edev, 2728 enum qed_hw_err_type err_type) 2729 { 2730 unsigned long err_flags = 0; 2731 2732 switch (err_type) { 2733 case QED_HW_ERR_DMAE_FAIL: 2734 set_bit(QEDE_ERR_WARN, &err_flags); 2735 fallthrough; 2736 case QED_HW_ERR_MFW_RESP_FAIL: 2737 case QED_HW_ERR_HW_ATTN: 2738 case QED_HW_ERR_RAMROD_FAIL: 2739 case QED_HW_ERR_FW_ASSERT: 2740 set_bit(QEDE_ERR_ATTN_CLR_EN, &err_flags); 2741 set_bit(QEDE_ERR_GET_DBG_INFO, &err_flags); 2742 /* make this error as recoverable and start recovery*/ 2743 set_bit(QEDE_ERR_IS_RECOVERABLE, &err_flags); 2744 break; 2745 2746 default: 2747 DP_NOTICE(edev, "Unexpected HW error [%d]\n", err_type); 2748 break; 2749 } 2750 2751 edev->err_flags |= err_flags; 2752 } 2753 2754 static void qede_schedule_hw_err_handler(void *dev, 2755 enum qed_hw_err_type err_type) 2756 { 2757 struct qede_dev *edev = dev; 2758 2759 /* Fan failure cannot be masked by handling of another HW error or by a 2760 * concurrent recovery process. 2761 */ 2762 if ((test_and_set_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags) || 2763 edev->state == QEDE_STATE_RECOVERY) && 2764 err_type != QED_HW_ERR_FAN_FAIL) { 2765 DP_INFO(edev, 2766 "Avoid scheduling an error handling while another HW error is being handled\n"); 2767 return; 2768 } 2769 2770 if (err_type >= QED_HW_ERR_LAST) { 2771 DP_NOTICE(edev, "Unknown HW error [%d]\n", err_type); 2772 clear_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags); 2773 return; 2774 } 2775 2776 edev->last_err_type = err_type; 2777 qede_set_hw_err_flags(edev, err_type); 2778 qede_atomic_hw_err_handler(edev); 2779 set_bit(QEDE_SP_HW_ERR, &edev->sp_flags); 2780 schedule_delayed_work(&edev->sp_task, 0); 2781 2782 DP_INFO(edev, "Scheduled a error handler [err_type %d]\n", err_type); 2783 } 2784 2785 static bool qede_is_txq_full(struct qede_dev *edev, struct qede_tx_queue *txq) 2786 { 2787 struct netdev_queue *netdev_txq; 2788 2789 netdev_txq = netdev_get_tx_queue(edev->ndev, txq->ndev_txq_id); 2790 if (netif_xmit_stopped(netdev_txq)) 2791 return true; 2792 2793 return false; 2794 } 2795 2796 static void qede_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 2797 { 2798 struct qede_dev *edev = dev; 2799 struct netdev_hw_addr *ha; 2800 int i; 2801 2802 if (edev->ndev->features & NETIF_F_IP_CSUM) 2803 data->feat_flags |= QED_TLV_IP_CSUM; 2804 if (edev->ndev->features & NETIF_F_TSO) 2805 data->feat_flags |= QED_TLV_LSO; 2806 2807 ether_addr_copy(data->mac[0], edev->ndev->dev_addr); 2808 eth_zero_addr(data->mac[1]); 2809 eth_zero_addr(data->mac[2]); 2810 /* Copy the first two UC macs */ 2811 netif_addr_lock_bh(edev->ndev); 2812 i = 1; 2813 netdev_for_each_uc_addr(ha, edev->ndev) { 2814 ether_addr_copy(data->mac[i++], ha->addr); 2815 if (i == QED_TLV_MAC_COUNT) 2816 break; 2817 } 2818 2819 netif_addr_unlock_bh(edev->ndev); 2820 } 2821 2822 static void qede_get_eth_tlv_data(void *dev, void *data) 2823 { 2824 struct qed_mfw_tlv_eth *etlv = data; 2825 struct qede_dev *edev = dev; 2826 struct qede_fastpath *fp; 2827 int i; 2828 2829 etlv->lso_maxoff_size = 0XFFFF; 2830 etlv->lso_maxoff_size_set = true; 2831 etlv->lso_minseg_size = (u16)ETH_TX_LSO_WINDOW_MIN_LEN; 2832 etlv->lso_minseg_size_set = true; 2833 etlv->prom_mode = !!(edev->ndev->flags & IFF_PROMISC); 2834 etlv->prom_mode_set = true; 2835 etlv->tx_descr_size = QEDE_TSS_COUNT(edev); 2836 etlv->tx_descr_size_set = true; 2837 etlv->rx_descr_size = QEDE_RSS_COUNT(edev); 2838 etlv->rx_descr_size_set = true; 2839 etlv->iov_offload = QED_MFW_TLV_IOV_OFFLOAD_VEB; 2840 etlv->iov_offload_set = true; 2841 2842 /* Fill information regarding queues; Should be done under the qede 2843 * lock to guarantee those don't change beneath our feet. 2844 */ 2845 etlv->txqs_empty = true; 2846 etlv->rxqs_empty = true; 2847 etlv->num_txqs_full = 0; 2848 etlv->num_rxqs_full = 0; 2849 2850 __qede_lock(edev); 2851 for_each_queue(i) { 2852 fp = &edev->fp_array[i]; 2853 if (fp->type & QEDE_FASTPATH_TX) { 2854 struct qede_tx_queue *txq = QEDE_FP_TC0_TXQ(fp); 2855 2856 if (txq->sw_tx_cons != txq->sw_tx_prod) 2857 etlv->txqs_empty = false; 2858 if (qede_is_txq_full(edev, txq)) 2859 etlv->num_txqs_full++; 2860 } 2861 if (fp->type & QEDE_FASTPATH_RX) { 2862 if (qede_has_rx_work(fp->rxq)) 2863 etlv->rxqs_empty = false; 2864 2865 /* This one is a bit tricky; Firmware might stop 2866 * placing packets if ring is not yet full. 2867 * Give an approximation. 2868 */ 2869 if (le16_to_cpu(*fp->rxq->hw_cons_ptr) - 2870 qed_chain_get_cons_idx(&fp->rxq->rx_comp_ring) > 2871 RX_RING_SIZE - 100) 2872 etlv->num_rxqs_full++; 2873 } 2874 } 2875 __qede_unlock(edev); 2876 2877 etlv->txqs_empty_set = true; 2878 etlv->rxqs_empty_set = true; 2879 etlv->num_txqs_full_set = true; 2880 etlv->num_rxqs_full_set = true; 2881 } 2882 2883 /** 2884 * qede_io_error_detected(): Called when PCI error is detected 2885 * 2886 * @pdev: Pointer to PCI device 2887 * @state: The current pci connection state 2888 * 2889 *Return: pci_ers_result_t. 2890 * 2891 * This function is called after a PCI bus error affecting 2892 * this device has been detected. 2893 */ 2894 static pci_ers_result_t 2895 qede_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) 2896 { 2897 struct net_device *dev = pci_get_drvdata(pdev); 2898 struct qede_dev *edev = netdev_priv(dev); 2899 2900 if (!edev) 2901 return PCI_ERS_RESULT_NONE; 2902 2903 DP_NOTICE(edev, "IO error detected [%d]\n", state); 2904 2905 __qede_lock(edev); 2906 if (edev->state == QEDE_STATE_RECOVERY) { 2907 DP_NOTICE(edev, "Device already in the recovery state\n"); 2908 __qede_unlock(edev); 2909 return PCI_ERS_RESULT_NONE; 2910 } 2911 2912 /* PF handles the recovery of its VFs */ 2913 if (IS_VF(edev)) { 2914 DP_VERBOSE(edev, QED_MSG_IOV, 2915 "VF recovery is handled by its PF\n"); 2916 __qede_unlock(edev); 2917 return PCI_ERS_RESULT_RECOVERED; 2918 } 2919 2920 /* Close OS Tx */ 2921 netif_tx_disable(edev->ndev); 2922 netif_carrier_off(edev->ndev); 2923 2924 set_bit(QEDE_SP_AER, &edev->sp_flags); 2925 schedule_delayed_work(&edev->sp_task, 0); 2926 2927 __qede_unlock(edev); 2928 2929 return PCI_ERS_RESULT_CAN_RECOVER; 2930 } 2931