2 * Copyright (C) 2005 - 2016 Broadcom
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
10 * Contact Information:
11 * linux-drivers@emulex.com
15 * Costa Mesa, CA 92626
18 #include <linux/prefetch.h>
19 #include <linux/module.h>
22 #include <asm/div64.h>
23 #include <linux/aer.h>
24 #include <linux/if_bridge.h>
25 #include <net/busy_poll.h>
26 #include <net/vxlan.h>
28 MODULE_VERSION(DRV_VER);
29 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
30 MODULE_AUTHOR("Emulex Corporation");
31 MODULE_LICENSE("GPL");
33 /* num_vfs module param is obsolete.
34 * Use sysfs method to enable/disable VFs.
36 static unsigned int num_vfs;
37 module_param(num_vfs, uint, S_IRUGO);
38 MODULE_PARM_DESC(num_vfs, "Number of PCI VFs to initialize");
40 static ushort rx_frag_size = 2048;
41 module_param(rx_frag_size, ushort, S_IRUGO);
42 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
44 /* Per-module error detection/recovery workq shared across all functions.
45 * Each function schedules its own work request on this shared workq.
47 static struct workqueue_struct *be_err_recovery_workq;
49 static const struct pci_device_id be_dev_ids[] = {
50 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
51 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
52 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
53 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
54 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID3)},
55 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID4)},
56 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID5)},
57 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID6)},
60 MODULE_DEVICE_TABLE(pci, be_dev_ids);
62 /* Workqueue used by all functions for defering cmd calls to the adapter */
63 static struct workqueue_struct *be_wq;
65 /* UE Status Low CSR */
66 static const char * const ue_status_low_desc[] = {
101 /* UE Status High CSR */
102 static const char * const ue_status_hi_desc[] = {
137 #define BE_VF_IF_EN_FLAGS (BE_IF_FLAGS_UNTAGGED | \
138 BE_IF_FLAGS_BROADCAST | \
139 BE_IF_FLAGS_MULTICAST | \
140 BE_IF_FLAGS_PASS_L3L4_ERRORS)
142 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
144 struct be_dma_mem *mem = &q->dma_mem;
147 dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
153 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
154 u16 len, u16 entry_size)
156 struct be_dma_mem *mem = &q->dma_mem;
158 memset(q, 0, sizeof(*q));
160 q->entry_size = entry_size;
161 mem->size = len * entry_size;
162 mem->va = dma_zalloc_coherent(&adapter->pdev->dev, mem->size, &mem->dma,
169 static void be_reg_intr_set(struct be_adapter *adapter, bool enable)
173 pci_read_config_dword(adapter->pdev, PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET,
175 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
177 if (!enabled && enable)
178 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
179 else if (enabled && !enable)
180 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
184 pci_write_config_dword(adapter->pdev,
185 PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET, reg);
188 static void be_intr_set(struct be_adapter *adapter, bool enable)
192 /* On lancer interrupts can't be controlled via this register */
193 if (lancer_chip(adapter))
196 if (be_check_error(adapter, BE_ERROR_EEH))
199 status = be_cmd_intr_set(adapter, enable);
201 be_reg_intr_set(adapter, enable);
204 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
208 if (be_check_error(adapter, BE_ERROR_HW))
211 val |= qid & DB_RQ_RING_ID_MASK;
212 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
215 iowrite32(val, adapter->db + DB_RQ_OFFSET);
218 static void be_txq_notify(struct be_adapter *adapter, struct be_tx_obj *txo,
223 if (be_check_error(adapter, BE_ERROR_HW))
226 val |= txo->q.id & DB_TXULP_RING_ID_MASK;
227 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
230 iowrite32(val, adapter->db + txo->db_offset);
233 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
234 bool arm, bool clear_int, u16 num_popped,
235 u32 eq_delay_mult_enc)
239 val |= qid & DB_EQ_RING_ID_MASK;
240 val |= ((qid & DB_EQ_RING_ID_EXT_MASK) << DB_EQ_RING_ID_EXT_MASK_SHIFT);
242 if (be_check_error(adapter, BE_ERROR_HW))
246 val |= 1 << DB_EQ_REARM_SHIFT;
248 val |= 1 << DB_EQ_CLR_SHIFT;
249 val |= 1 << DB_EQ_EVNT_SHIFT;
250 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
251 val |= eq_delay_mult_enc << DB_EQ_R2I_DLY_SHIFT;
252 iowrite32(val, adapter->db + DB_EQ_OFFSET);
255 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
259 val |= qid & DB_CQ_RING_ID_MASK;
260 val |= ((qid & DB_CQ_RING_ID_EXT_MASK) <<
261 DB_CQ_RING_ID_EXT_MASK_SHIFT);
263 if (be_check_error(adapter, BE_ERROR_HW))
267 val |= 1 << DB_CQ_REARM_SHIFT;
268 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
269 iowrite32(val, adapter->db + DB_CQ_OFFSET);
272 static int be_dev_mac_add(struct be_adapter *adapter, u8 *mac)
276 /* Check if mac has already been added as part of uc-list */
277 for (i = 0; i < adapter->uc_macs; i++) {
278 if (ether_addr_equal((u8 *)&adapter->uc_list[i * ETH_ALEN],
280 /* mac already added, skip addition */
281 adapter->pmac_id[0] = adapter->pmac_id[i + 1];
286 return be_cmd_pmac_add(adapter, mac, adapter->if_handle,
287 &adapter->pmac_id[0], 0);
290 static void be_dev_mac_del(struct be_adapter *adapter, int pmac_id)
294 /* Skip deletion if the programmed mac is
295 * being used in uc-list
297 for (i = 0; i < adapter->uc_macs; i++) {
298 if (adapter->pmac_id[i + 1] == pmac_id)
301 be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0);
304 static int be_mac_addr_set(struct net_device *netdev, void *p)
306 struct be_adapter *adapter = netdev_priv(netdev);
307 struct device *dev = &adapter->pdev->dev;
308 struct sockaddr *addr = p;
311 u32 old_pmac_id = adapter->pmac_id[0];
313 if (!is_valid_ether_addr(addr->sa_data))
314 return -EADDRNOTAVAIL;
316 /* Proceed further only if, User provided MAC is different
319 if (ether_addr_equal(addr->sa_data, adapter->dev_mac))
322 /* if device is not running, copy MAC to netdev->dev_addr */
323 if (!netif_running(netdev))
326 /* The PMAC_ADD cmd may fail if the VF doesn't have FILTMGMT
327 * privilege or if PF did not provision the new MAC address.
328 * On BE3, this cmd will always fail if the VF doesn't have the
329 * FILTMGMT privilege. This failure is OK, only if the PF programmed
330 * the MAC for the VF.
332 mutex_lock(&adapter->rx_filter_lock);
333 status = be_dev_mac_add(adapter, (u8 *)addr->sa_data);
336 /* Delete the old programmed MAC. This call may fail if the
337 * old MAC was already deleted by the PF driver.
339 if (adapter->pmac_id[0] != old_pmac_id)
340 be_dev_mac_del(adapter, old_pmac_id);
343 mutex_unlock(&adapter->rx_filter_lock);
344 /* Decide if the new MAC is successfully activated only after
347 status = be_cmd_get_active_mac(adapter, adapter->pmac_id[0], mac,
348 adapter->if_handle, true, 0);
352 /* The MAC change did not happen, either due to lack of privilege
353 * or PF didn't pre-provision.
355 if (!ether_addr_equal(addr->sa_data, mac)) {
360 ether_addr_copy(adapter->dev_mac, addr->sa_data);
361 ether_addr_copy(netdev->dev_addr, addr->sa_data);
362 dev_info(dev, "MAC address changed to %pM\n", addr->sa_data);
365 dev_warn(dev, "MAC address change to %pM failed\n", addr->sa_data);
369 /* BE2 supports only v0 cmd */
370 static void *hw_stats_from_cmd(struct be_adapter *adapter)
372 if (BE2_chip(adapter)) {
373 struct be_cmd_resp_get_stats_v0 *cmd = adapter->stats_cmd.va;
375 return &cmd->hw_stats;
376 } else if (BE3_chip(adapter)) {
377 struct be_cmd_resp_get_stats_v1 *cmd = adapter->stats_cmd.va;
379 return &cmd->hw_stats;
381 struct be_cmd_resp_get_stats_v2 *cmd = adapter->stats_cmd.va;
383 return &cmd->hw_stats;
387 /* BE2 supports only v0 cmd */
388 static void *be_erx_stats_from_cmd(struct be_adapter *adapter)
390 if (BE2_chip(adapter)) {
391 struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
393 return &hw_stats->erx;
394 } else if (BE3_chip(adapter)) {
395 struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
397 return &hw_stats->erx;
399 struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
401 return &hw_stats->erx;
405 static void populate_be_v0_stats(struct be_adapter *adapter)
407 struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
408 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
409 struct be_rxf_stats_v0 *rxf_stats = &hw_stats->rxf;
410 struct be_port_rxf_stats_v0 *port_stats =
411 &rxf_stats->port[adapter->port_num];
412 struct be_drv_stats *drvs = &adapter->drv_stats;
414 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
415 drvs->rx_pause_frames = port_stats->rx_pause_frames;
416 drvs->rx_crc_errors = port_stats->rx_crc_errors;
417 drvs->rx_control_frames = port_stats->rx_control_frames;
418 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
419 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
420 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
421 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
422 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
423 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
424 drvs->rxpp_fifo_overflow_drop = port_stats->rx_fifo_overflow;
425 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
426 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
427 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
428 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
429 drvs->rx_input_fifo_overflow_drop = port_stats->rx_input_fifo_overflow;
430 drvs->rx_dropped_header_too_small =
431 port_stats->rx_dropped_header_too_small;
432 drvs->rx_address_filtered =
433 port_stats->rx_address_filtered +
434 port_stats->rx_vlan_filtered;
435 drvs->rx_alignment_symbol_errors =
436 port_stats->rx_alignment_symbol_errors;
438 drvs->tx_pauseframes = port_stats->tx_pauseframes;
439 drvs->tx_controlframes = port_stats->tx_controlframes;
441 if (adapter->port_num)
442 drvs->jabber_events = rxf_stats->port1_jabber_events;
444 drvs->jabber_events = rxf_stats->port0_jabber_events;
445 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
446 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
447 drvs->forwarded_packets = rxf_stats->forwarded_packets;
448 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
449 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
450 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
451 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
454 static void populate_be_v1_stats(struct be_adapter *adapter)
456 struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
457 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
458 struct be_rxf_stats_v1 *rxf_stats = &hw_stats->rxf;
459 struct be_port_rxf_stats_v1 *port_stats =
460 &rxf_stats->port[adapter->port_num];
461 struct be_drv_stats *drvs = &adapter->drv_stats;
463 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
464 drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
465 drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
466 drvs->rx_pause_frames = port_stats->rx_pause_frames;
467 drvs->rx_crc_errors = port_stats->rx_crc_errors;
468 drvs->rx_control_frames = port_stats->rx_control_frames;
469 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
470 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
471 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
472 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
473 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
474 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
475 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
476 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
477 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
478 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
479 drvs->rx_dropped_header_too_small =
480 port_stats->rx_dropped_header_too_small;
481 drvs->rx_input_fifo_overflow_drop =
482 port_stats->rx_input_fifo_overflow_drop;
483 drvs->rx_address_filtered = port_stats->rx_address_filtered;
484 drvs->rx_alignment_symbol_errors =
485 port_stats->rx_alignment_symbol_errors;
486 drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
487 drvs->tx_pauseframes = port_stats->tx_pauseframes;
488 drvs->tx_controlframes = port_stats->tx_controlframes;
489 drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
490 drvs->jabber_events = port_stats->jabber_events;
491 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
492 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
493 drvs->forwarded_packets = rxf_stats->forwarded_packets;
494 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
495 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
496 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
497 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
500 static void populate_be_v2_stats(struct be_adapter *adapter)
502 struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
503 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
504 struct be_rxf_stats_v2 *rxf_stats = &hw_stats->rxf;
505 struct be_port_rxf_stats_v2 *port_stats =
506 &rxf_stats->port[adapter->port_num];
507 struct be_drv_stats *drvs = &adapter->drv_stats;
509 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
510 drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
511 drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
512 drvs->rx_pause_frames = port_stats->rx_pause_frames;
513 drvs->rx_crc_errors = port_stats->rx_crc_errors;
514 drvs->rx_control_frames = port_stats->rx_control_frames;
515 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
516 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
517 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
518 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
519 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
520 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
521 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
522 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
523 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
524 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
525 drvs->rx_dropped_header_too_small =
526 port_stats->rx_dropped_header_too_small;
527 drvs->rx_input_fifo_overflow_drop =
528 port_stats->rx_input_fifo_overflow_drop;
529 drvs->rx_address_filtered = port_stats->rx_address_filtered;
530 drvs->rx_alignment_symbol_errors =
531 port_stats->rx_alignment_symbol_errors;
532 drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
533 drvs->tx_pauseframes = port_stats->tx_pauseframes;
534 drvs->tx_controlframes = port_stats->tx_controlframes;
535 drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
536 drvs->jabber_events = port_stats->jabber_events;
537 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
538 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
539 drvs->forwarded_packets = rxf_stats->forwarded_packets;
540 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
541 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
542 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
543 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
544 if (be_roce_supported(adapter)) {
545 drvs->rx_roce_bytes_lsd = port_stats->roce_bytes_received_lsd;
546 drvs->rx_roce_bytes_msd = port_stats->roce_bytes_received_msd;
547 drvs->rx_roce_frames = port_stats->roce_frames_received;
548 drvs->roce_drops_crc = port_stats->roce_drops_crc;
549 drvs->roce_drops_payload_len =
550 port_stats->roce_drops_payload_len;
554 static void populate_lancer_stats(struct be_adapter *adapter)
556 struct be_drv_stats *drvs = &adapter->drv_stats;
557 struct lancer_pport_stats *pport_stats = pport_stats_from_cmd(adapter);
559 be_dws_le_to_cpu(pport_stats, sizeof(*pport_stats));
560 drvs->rx_pause_frames = pport_stats->rx_pause_frames_lo;
561 drvs->rx_crc_errors = pport_stats->rx_crc_errors_lo;
562 drvs->rx_control_frames = pport_stats->rx_control_frames_lo;
563 drvs->rx_in_range_errors = pport_stats->rx_in_range_errors;
564 drvs->rx_frame_too_long = pport_stats->rx_frames_too_long_lo;
565 drvs->rx_dropped_runt = pport_stats->rx_dropped_runt;
566 drvs->rx_ip_checksum_errs = pport_stats->rx_ip_checksum_errors;
567 drvs->rx_tcp_checksum_errs = pport_stats->rx_tcp_checksum_errors;
568 drvs->rx_udp_checksum_errs = pport_stats->rx_udp_checksum_errors;
569 drvs->rx_dropped_tcp_length =
570 pport_stats->rx_dropped_invalid_tcp_length;
571 drvs->rx_dropped_too_small = pport_stats->rx_dropped_too_small;
572 drvs->rx_dropped_too_short = pport_stats->rx_dropped_too_short;
573 drvs->rx_out_range_errors = pport_stats->rx_out_of_range_errors;
574 drvs->rx_dropped_header_too_small =
575 pport_stats->rx_dropped_header_too_small;
576 drvs->rx_input_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
577 drvs->rx_address_filtered =
578 pport_stats->rx_address_filtered +
579 pport_stats->rx_vlan_filtered;
580 drvs->rx_alignment_symbol_errors = pport_stats->rx_symbol_errors_lo;
581 drvs->rxpp_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
582 drvs->tx_pauseframes = pport_stats->tx_pause_frames_lo;
583 drvs->tx_controlframes = pport_stats->tx_control_frames_lo;
584 drvs->jabber_events = pport_stats->rx_jabbers;
585 drvs->forwarded_packets = pport_stats->num_forwards_lo;
586 drvs->rx_drops_mtu = pport_stats->rx_drops_mtu_lo;
587 drvs->rx_drops_too_many_frags =
588 pport_stats->rx_drops_too_many_frags_lo;
591 static void accumulate_16bit_val(u32 *acc, u16 val)
593 #define lo(x) (x & 0xFFFF)
594 #define hi(x) (x & 0xFFFF0000)
595 bool wrapped = val < lo(*acc);
596 u32 newacc = hi(*acc) + val;
600 ACCESS_ONCE(*acc) = newacc;
603 static void populate_erx_stats(struct be_adapter *adapter,
604 struct be_rx_obj *rxo, u32 erx_stat)
606 if (!BEx_chip(adapter))
607 rx_stats(rxo)->rx_drops_no_frags = erx_stat;
609 /* below erx HW counter can actually wrap around after
610 * 65535. Driver accumulates a 32-bit value
612 accumulate_16bit_val(&rx_stats(rxo)->rx_drops_no_frags,
616 void be_parse_stats(struct be_adapter *adapter)
618 struct be_erx_stats_v2 *erx = be_erx_stats_from_cmd(adapter);
619 struct be_rx_obj *rxo;
623 if (lancer_chip(adapter)) {
624 populate_lancer_stats(adapter);
626 if (BE2_chip(adapter))
627 populate_be_v0_stats(adapter);
628 else if (BE3_chip(adapter))
630 populate_be_v1_stats(adapter);
632 populate_be_v2_stats(adapter);
634 /* erx_v2 is longer than v0, v1. use v2 for v0, v1 access */
635 for_all_rx_queues(adapter, rxo, i) {
636 erx_stat = erx->rx_drops_no_fragments[rxo->q.id];
637 populate_erx_stats(adapter, rxo, erx_stat);
642 static struct rtnl_link_stats64 *be_get_stats64(struct net_device *netdev,
643 struct rtnl_link_stats64 *stats)
645 struct be_adapter *adapter = netdev_priv(netdev);
646 struct be_drv_stats *drvs = &adapter->drv_stats;
647 struct be_rx_obj *rxo;
648 struct be_tx_obj *txo;
653 for_all_rx_queues(adapter, rxo, i) {
654 const struct be_rx_stats *rx_stats = rx_stats(rxo);
657 start = u64_stats_fetch_begin_irq(&rx_stats->sync);
658 pkts = rx_stats(rxo)->rx_pkts;
659 bytes = rx_stats(rxo)->rx_bytes;
660 } while (u64_stats_fetch_retry_irq(&rx_stats->sync, start));
661 stats->rx_packets += pkts;
662 stats->rx_bytes += bytes;
663 stats->multicast += rx_stats(rxo)->rx_mcast_pkts;
664 stats->rx_dropped += rx_stats(rxo)->rx_drops_no_skbs +
665 rx_stats(rxo)->rx_drops_no_frags;
668 for_all_tx_queues(adapter, txo, i) {
669 const struct be_tx_stats *tx_stats = tx_stats(txo);
672 start = u64_stats_fetch_begin_irq(&tx_stats->sync);
673 pkts = tx_stats(txo)->tx_pkts;
674 bytes = tx_stats(txo)->tx_bytes;
675 } while (u64_stats_fetch_retry_irq(&tx_stats->sync, start));
676 stats->tx_packets += pkts;
677 stats->tx_bytes += bytes;
680 /* bad pkts received */
681 stats->rx_errors = drvs->rx_crc_errors +
682 drvs->rx_alignment_symbol_errors +
683 drvs->rx_in_range_errors +
684 drvs->rx_out_range_errors +
685 drvs->rx_frame_too_long +
686 drvs->rx_dropped_too_small +
687 drvs->rx_dropped_too_short +
688 drvs->rx_dropped_header_too_small +
689 drvs->rx_dropped_tcp_length +
690 drvs->rx_dropped_runt;
692 /* detailed rx errors */
693 stats->rx_length_errors = drvs->rx_in_range_errors +
694 drvs->rx_out_range_errors +
695 drvs->rx_frame_too_long;
697 stats->rx_crc_errors = drvs->rx_crc_errors;
699 /* frame alignment errors */
700 stats->rx_frame_errors = drvs->rx_alignment_symbol_errors;
702 /* receiver fifo overrun */
703 /* drops_no_pbuf is no per i/f, it's per BE card */
704 stats->rx_fifo_errors = drvs->rxpp_fifo_overflow_drop +
705 drvs->rx_input_fifo_overflow_drop +
706 drvs->rx_drops_no_pbuf;
710 void be_link_status_update(struct be_adapter *adapter, u8 link_status)
712 struct net_device *netdev = adapter->netdev;
714 if (!(adapter->flags & BE_FLAGS_LINK_STATUS_INIT)) {
715 netif_carrier_off(netdev);
716 adapter->flags |= BE_FLAGS_LINK_STATUS_INIT;
720 netif_carrier_on(netdev);
722 netif_carrier_off(netdev);
724 netdev_info(netdev, "Link is %s\n", link_status ? "Up" : "Down");
727 static int be_gso_hdr_len(struct sk_buff *skb)
729 if (skb->encapsulation)
730 return skb_inner_transport_offset(skb) +
731 inner_tcp_hdrlen(skb);
732 return skb_transport_offset(skb) + tcp_hdrlen(skb);
735 static void be_tx_stats_update(struct be_tx_obj *txo, struct sk_buff *skb)
737 struct be_tx_stats *stats = tx_stats(txo);
738 u32 tx_pkts = skb_shinfo(skb)->gso_segs ? : 1;
739 /* Account for headers which get duplicated in TSO pkt */
740 u32 dup_hdr_len = tx_pkts > 1 ? be_gso_hdr_len(skb) * (tx_pkts - 1) : 0;
742 u64_stats_update_begin(&stats->sync);
744 stats->tx_bytes += skb->len + dup_hdr_len;
745 stats->tx_pkts += tx_pkts;
746 if (skb->encapsulation && skb->ip_summed == CHECKSUM_PARTIAL)
747 stats->tx_vxlan_offload_pkts += tx_pkts;
748 u64_stats_update_end(&stats->sync);
751 /* Returns number of WRBs needed for the skb */
752 static u32 skb_wrb_cnt(struct sk_buff *skb)
754 /* +1 for the header wrb */
755 return 1 + (skb_headlen(skb) ? 1 : 0) + skb_shinfo(skb)->nr_frags;
758 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
760 wrb->frag_pa_hi = cpu_to_le32(upper_32_bits(addr));
761 wrb->frag_pa_lo = cpu_to_le32(lower_32_bits(addr));
762 wrb->frag_len = cpu_to_le32(len & ETH_WRB_FRAG_LEN_MASK);
766 /* A dummy wrb is just all zeros. Using a separate routine for dummy-wrb
767 * to avoid the swap and shift/mask operations in wrb_fill().
769 static inline void wrb_fill_dummy(struct be_eth_wrb *wrb)
777 static inline u16 be_get_tx_vlan_tag(struct be_adapter *adapter,
783 vlan_tag = skb_vlan_tag_get(skb);
784 vlan_prio = (vlan_tag & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
785 /* If vlan priority provided by OS is NOT in available bmap */
786 if (!(adapter->vlan_prio_bmap & (1 << vlan_prio)))
787 vlan_tag = (vlan_tag & ~VLAN_PRIO_MASK) |
788 adapter->recommended_prio_bits;
793 /* Used only for IP tunnel packets */
794 static u16 skb_inner_ip_proto(struct sk_buff *skb)
796 return (inner_ip_hdr(skb)->version == 4) ?
797 inner_ip_hdr(skb)->protocol : inner_ipv6_hdr(skb)->nexthdr;
800 static u16 skb_ip_proto(struct sk_buff *skb)
802 return (ip_hdr(skb)->version == 4) ?
803 ip_hdr(skb)->protocol : ipv6_hdr(skb)->nexthdr;
806 static inline bool be_is_txq_full(struct be_tx_obj *txo)
808 return atomic_read(&txo->q.used) + BE_MAX_TX_FRAG_COUNT >= txo->q.len;
811 static inline bool be_can_txq_wake(struct be_tx_obj *txo)
813 return atomic_read(&txo->q.used) < txo->q.len / 2;
816 static inline bool be_is_tx_compl_pending(struct be_tx_obj *txo)
818 return atomic_read(&txo->q.used) > txo->pend_wrb_cnt;
821 static void be_get_wrb_params_from_skb(struct be_adapter *adapter,
823 struct be_wrb_params *wrb_params)
827 if (skb_is_gso(skb)) {
828 BE_WRB_F_SET(wrb_params->features, LSO, 1);
829 wrb_params->lso_mss = skb_shinfo(skb)->gso_size;
830 if (skb_is_gso_v6(skb) && !lancer_chip(adapter))
831 BE_WRB_F_SET(wrb_params->features, LSO6, 1);
832 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
833 if (skb->encapsulation) {
834 BE_WRB_F_SET(wrb_params->features, IPCS, 1);
835 proto = skb_inner_ip_proto(skb);
837 proto = skb_ip_proto(skb);
839 if (proto == IPPROTO_TCP)
840 BE_WRB_F_SET(wrb_params->features, TCPCS, 1);
841 else if (proto == IPPROTO_UDP)
842 BE_WRB_F_SET(wrb_params->features, UDPCS, 1);
845 if (skb_vlan_tag_present(skb)) {
846 BE_WRB_F_SET(wrb_params->features, VLAN, 1);
847 wrb_params->vlan_tag = be_get_tx_vlan_tag(adapter, skb);
850 BE_WRB_F_SET(wrb_params->features, CRC, 1);
853 static void wrb_fill_hdr(struct be_adapter *adapter,
854 struct be_eth_hdr_wrb *hdr,
855 struct be_wrb_params *wrb_params,
858 memset(hdr, 0, sizeof(*hdr));
860 SET_TX_WRB_HDR_BITS(crc, hdr,
861 BE_WRB_F_GET(wrb_params->features, CRC));
862 SET_TX_WRB_HDR_BITS(ipcs, hdr,
863 BE_WRB_F_GET(wrb_params->features, IPCS));
864 SET_TX_WRB_HDR_BITS(tcpcs, hdr,
865 BE_WRB_F_GET(wrb_params->features, TCPCS));
866 SET_TX_WRB_HDR_BITS(udpcs, hdr,
867 BE_WRB_F_GET(wrb_params->features, UDPCS));
869 SET_TX_WRB_HDR_BITS(lso, hdr,
870 BE_WRB_F_GET(wrb_params->features, LSO));
871 SET_TX_WRB_HDR_BITS(lso6, hdr,
872 BE_WRB_F_GET(wrb_params->features, LSO6));
873 SET_TX_WRB_HDR_BITS(lso_mss, hdr, wrb_params->lso_mss);
875 /* Hack to skip HW VLAN tagging needs evt = 1, compl = 0. When this
876 * hack is not needed, the evt bit is set while ringing DB.
878 SET_TX_WRB_HDR_BITS(event, hdr,
879 BE_WRB_F_GET(wrb_params->features, VLAN_SKIP_HW));
880 SET_TX_WRB_HDR_BITS(vlan, hdr,
881 BE_WRB_F_GET(wrb_params->features, VLAN));
882 SET_TX_WRB_HDR_BITS(vlan_tag, hdr, wrb_params->vlan_tag);
884 SET_TX_WRB_HDR_BITS(num_wrb, hdr, skb_wrb_cnt(skb));
885 SET_TX_WRB_HDR_BITS(len, hdr, skb->len);
886 SET_TX_WRB_HDR_BITS(mgmt, hdr,
887 BE_WRB_F_GET(wrb_params->features, OS2BMC));
890 static void unmap_tx_frag(struct device *dev, struct be_eth_wrb *wrb,
894 u32 frag_len = le32_to_cpu(wrb->frag_len);
897 dma = (u64)le32_to_cpu(wrb->frag_pa_hi) << 32 |
898 (u64)le32_to_cpu(wrb->frag_pa_lo);
901 dma_unmap_single(dev, dma, frag_len, DMA_TO_DEVICE);
903 dma_unmap_page(dev, dma, frag_len, DMA_TO_DEVICE);
907 /* Grab a WRB header for xmit */
908 static u32 be_tx_get_wrb_hdr(struct be_tx_obj *txo)
910 u32 head = txo->q.head;
912 queue_head_inc(&txo->q);
916 /* Set up the WRB header for xmit */
917 static void be_tx_setup_wrb_hdr(struct be_adapter *adapter,
918 struct be_tx_obj *txo,
919 struct be_wrb_params *wrb_params,
920 struct sk_buff *skb, u16 head)
922 u32 num_frags = skb_wrb_cnt(skb);
923 struct be_queue_info *txq = &txo->q;
924 struct be_eth_hdr_wrb *hdr = queue_index_node(txq, head);
926 wrb_fill_hdr(adapter, hdr, wrb_params, skb);
927 be_dws_cpu_to_le(hdr, sizeof(*hdr));
929 BUG_ON(txo->sent_skb_list[head]);
930 txo->sent_skb_list[head] = skb;
931 txo->last_req_hdr = head;
932 atomic_add(num_frags, &txq->used);
933 txo->last_req_wrb_cnt = num_frags;
934 txo->pend_wrb_cnt += num_frags;
937 /* Setup a WRB fragment (buffer descriptor) for xmit */
938 static void be_tx_setup_wrb_frag(struct be_tx_obj *txo, dma_addr_t busaddr,
941 struct be_eth_wrb *wrb;
942 struct be_queue_info *txq = &txo->q;
944 wrb = queue_head_node(txq);
945 wrb_fill(wrb, busaddr, len);
949 /* Bring the queue back to the state it was in before be_xmit_enqueue() routine
950 * was invoked. The producer index is restored to the previous packet and the
951 * WRBs of the current packet are unmapped. Invoked to handle tx setup errors.
953 static void be_xmit_restore(struct be_adapter *adapter,
954 struct be_tx_obj *txo, u32 head, bool map_single,
958 struct be_eth_wrb *wrb;
959 struct be_queue_info *txq = &txo->q;
961 dev = &adapter->pdev->dev;
964 /* skip the first wrb (hdr); it's not mapped */
967 wrb = queue_head_node(txq);
968 unmap_tx_frag(dev, wrb, map_single);
970 copied -= le32_to_cpu(wrb->frag_len);
977 /* Enqueue the given packet for transmit. This routine allocates WRBs for the
978 * packet, dma maps the packet buffers and sets up the WRBs. Returns the number
979 * of WRBs used up by the packet.
981 static u32 be_xmit_enqueue(struct be_adapter *adapter, struct be_tx_obj *txo,
983 struct be_wrb_params *wrb_params)
985 u32 i, copied = 0, wrb_cnt = skb_wrb_cnt(skb);
986 struct device *dev = &adapter->pdev->dev;
987 struct be_queue_info *txq = &txo->q;
988 bool map_single = false;
989 u32 head = txq->head;
993 head = be_tx_get_wrb_hdr(txo);
995 if (skb->len > skb->data_len) {
996 len = skb_headlen(skb);
998 busaddr = dma_map_single(dev, skb->data, len, DMA_TO_DEVICE);
999 if (dma_mapping_error(dev, busaddr))
1002 be_tx_setup_wrb_frag(txo, busaddr, len);
1006 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1007 const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
1008 len = skb_frag_size(frag);
1010 busaddr = skb_frag_dma_map(dev, frag, 0, len, DMA_TO_DEVICE);
1011 if (dma_mapping_error(dev, busaddr))
1013 be_tx_setup_wrb_frag(txo, busaddr, len);
1017 be_tx_setup_wrb_hdr(adapter, txo, wrb_params, skb, head);
1019 be_tx_stats_update(txo, skb);
1023 adapter->drv_stats.dma_map_errors++;
1024 be_xmit_restore(adapter, txo, head, map_single, copied);
1028 static inline int qnq_async_evt_rcvd(struct be_adapter *adapter)
1030 return adapter->flags & BE_FLAGS_QNQ_ASYNC_EVT_RCVD;
1033 static struct sk_buff *be_insert_vlan_in_pkt(struct be_adapter *adapter,
1034 struct sk_buff *skb,
1035 struct be_wrb_params
1040 skb = skb_share_check(skb, GFP_ATOMIC);
1044 if (skb_vlan_tag_present(skb))
1045 vlan_tag = be_get_tx_vlan_tag(adapter, skb);
1047 if (qnq_async_evt_rcvd(adapter) && adapter->pvid) {
1049 vlan_tag = adapter->pvid;
1050 /* f/w workaround to set skip_hw_vlan = 1, informs the F/W to
1051 * skip VLAN insertion
1053 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1057 skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),
1064 /* Insert the outer VLAN, if any */
1065 if (adapter->qnq_vid) {
1066 vlan_tag = adapter->qnq_vid;
1067 skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),
1071 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1077 static bool be_ipv6_exthdr_check(struct sk_buff *skb)
1079 struct ethhdr *eh = (struct ethhdr *)skb->data;
1080 u16 offset = ETH_HLEN;
1082 if (eh->h_proto == htons(ETH_P_IPV6)) {
1083 struct ipv6hdr *ip6h = (struct ipv6hdr *)(skb->data + offset);
1085 offset += sizeof(struct ipv6hdr);
1086 if (ip6h->nexthdr != NEXTHDR_TCP &&
1087 ip6h->nexthdr != NEXTHDR_UDP) {
1088 struct ipv6_opt_hdr *ehdr =
1089 (struct ipv6_opt_hdr *)(skb->data + offset);
1091 /* offending pkt: 2nd byte following IPv6 hdr is 0xff */
1092 if (ehdr->hdrlen == 0xff)
1099 static int be_vlan_tag_tx_chk(struct be_adapter *adapter, struct sk_buff *skb)
1101 return skb_vlan_tag_present(skb) || adapter->pvid || adapter->qnq_vid;
1104 static int be_ipv6_tx_stall_chk(struct be_adapter *adapter, struct sk_buff *skb)
1106 return BE3_chip(adapter) && be_ipv6_exthdr_check(skb);
1109 static struct sk_buff *be_lancer_xmit_workarounds(struct be_adapter *adapter,
1110 struct sk_buff *skb,
1111 struct be_wrb_params
1114 struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
1115 unsigned int eth_hdr_len;
1118 /* For padded packets, BE HW modifies tot_len field in IP header
1119 * incorrecly when VLAN tag is inserted by HW.
1120 * For padded packets, Lancer computes incorrect checksum.
1122 eth_hdr_len = ntohs(skb->protocol) == ETH_P_8021Q ?
1123 VLAN_ETH_HLEN : ETH_HLEN;
1124 if (skb->len <= 60 &&
1125 (lancer_chip(adapter) || skb_vlan_tag_present(skb)) &&
1127 ip = (struct iphdr *)ip_hdr(skb);
1128 pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len));
1131 /* If vlan tag is already inlined in the packet, skip HW VLAN
1132 * tagging in pvid-tagging mode
1134 if (be_pvid_tagging_enabled(adapter) &&
1135 veh->h_vlan_proto == htons(ETH_P_8021Q))
1136 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1138 /* HW has a bug wherein it will calculate CSUM for VLAN
1139 * pkts even though it is disabled.
1140 * Manually insert VLAN in pkt.
1142 if (skb->ip_summed != CHECKSUM_PARTIAL &&
1143 skb_vlan_tag_present(skb)) {
1144 skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params);
1149 /* HW may lockup when VLAN HW tagging is requested on
1150 * certain ipv6 packets. Drop such pkts if the HW workaround to
1151 * skip HW tagging is not enabled by FW.
1153 if (unlikely(be_ipv6_tx_stall_chk(adapter, skb) &&
1154 (adapter->pvid || adapter->qnq_vid) &&
1155 !qnq_async_evt_rcvd(adapter)))
1158 /* Manual VLAN tag insertion to prevent:
1159 * ASIC lockup when the ASIC inserts VLAN tag into
1160 * certain ipv6 packets. Insert VLAN tags in driver,
1161 * and set event, completion, vlan bits accordingly
1164 if (be_ipv6_tx_stall_chk(adapter, skb) &&
1165 be_vlan_tag_tx_chk(adapter, skb)) {
1166 skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params);
1173 dev_kfree_skb_any(skb);
1178 static struct sk_buff *be_xmit_workarounds(struct be_adapter *adapter,
1179 struct sk_buff *skb,
1180 struct be_wrb_params *wrb_params)
1184 /* Lancer, SH and BE3 in SRIOV mode have a bug wherein
1185 * packets that are 32b or less may cause a transmit stall
1186 * on that port. The workaround is to pad such packets
1187 * (len <= 32 bytes) to a minimum length of 36b.
1189 if (skb->len <= 32) {
1190 if (skb_put_padto(skb, 36))
1194 if (BEx_chip(adapter) || lancer_chip(adapter)) {
1195 skb = be_lancer_xmit_workarounds(adapter, skb, wrb_params);
1200 /* The stack can send us skbs with length greater than
1201 * what the HW can handle. Trim the extra bytes.
1203 WARN_ON_ONCE(skb->len > BE_MAX_GSO_SIZE);
1204 err = pskb_trim(skb, BE_MAX_GSO_SIZE);
1210 static void be_xmit_flush(struct be_adapter *adapter, struct be_tx_obj *txo)
1212 struct be_queue_info *txq = &txo->q;
1213 struct be_eth_hdr_wrb *hdr = queue_index_node(txq, txo->last_req_hdr);
1215 /* Mark the last request eventable if it hasn't been marked already */
1216 if (!(hdr->dw[2] & cpu_to_le32(TX_HDR_WRB_EVT)))
1217 hdr->dw[2] |= cpu_to_le32(TX_HDR_WRB_EVT | TX_HDR_WRB_COMPL);
1219 /* compose a dummy wrb if there are odd set of wrbs to notify */
1220 if (!lancer_chip(adapter) && (txo->pend_wrb_cnt & 1)) {
1221 wrb_fill_dummy(queue_head_node(txq));
1222 queue_head_inc(txq);
1223 atomic_inc(&txq->used);
1224 txo->pend_wrb_cnt++;
1225 hdr->dw[2] &= ~cpu_to_le32(TX_HDR_WRB_NUM_MASK <<
1226 TX_HDR_WRB_NUM_SHIFT);
1227 hdr->dw[2] |= cpu_to_le32((txo->last_req_wrb_cnt + 1) <<
1228 TX_HDR_WRB_NUM_SHIFT);
1230 be_txq_notify(adapter, txo, txo->pend_wrb_cnt);
1231 txo->pend_wrb_cnt = 0;
1234 /* OS2BMC related */
1236 #define DHCP_CLIENT_PORT 68
1237 #define DHCP_SERVER_PORT 67
1238 #define NET_BIOS_PORT1 137
1239 #define NET_BIOS_PORT2 138
1240 #define DHCPV6_RAS_PORT 547
1242 #define is_mc_allowed_on_bmc(adapter, eh) \
1243 (!is_multicast_filt_enabled(adapter) && \
1244 is_multicast_ether_addr(eh->h_dest) && \
1245 !is_broadcast_ether_addr(eh->h_dest))
1247 #define is_bc_allowed_on_bmc(adapter, eh) \
1248 (!is_broadcast_filt_enabled(adapter) && \
1249 is_broadcast_ether_addr(eh->h_dest))
1251 #define is_arp_allowed_on_bmc(adapter, skb) \
1252 (is_arp(skb) && is_arp_filt_enabled(adapter))
1254 #define is_broadcast_packet(eh, adapter) \
1255 (is_multicast_ether_addr(eh->h_dest) && \
1256 !compare_ether_addr(eh->h_dest, adapter->netdev->broadcast))
1258 #define is_arp(skb) (skb->protocol == htons(ETH_P_ARP))
1260 #define is_arp_filt_enabled(adapter) \
1261 (adapter->bmc_filt_mask & (BMC_FILT_BROADCAST_ARP))
1263 #define is_dhcp_client_filt_enabled(adapter) \
1264 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_CLIENT)
1266 #define is_dhcp_srvr_filt_enabled(adapter) \
1267 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_SERVER)
1269 #define is_nbios_filt_enabled(adapter) \
1270 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_NET_BIOS)
1272 #define is_ipv6_na_filt_enabled(adapter) \
1273 (adapter->bmc_filt_mask & \
1274 BMC_FILT_MULTICAST_IPV6_NEIGH_ADVER)
1276 #define is_ipv6_ra_filt_enabled(adapter) \
1277 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RA)
1279 #define is_ipv6_ras_filt_enabled(adapter) \
1280 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RAS)
1282 #define is_broadcast_filt_enabled(adapter) \
1283 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST)
1285 #define is_multicast_filt_enabled(adapter) \
1286 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST)
1288 static bool be_send_pkt_to_bmc(struct be_adapter *adapter,
1289 struct sk_buff **skb)
1291 struct ethhdr *eh = (struct ethhdr *)(*skb)->data;
1292 bool os2bmc = false;
1294 if (!be_is_os2bmc_enabled(adapter))
1297 if (!is_multicast_ether_addr(eh->h_dest))
1300 if (is_mc_allowed_on_bmc(adapter, eh) ||
1301 is_bc_allowed_on_bmc(adapter, eh) ||
1302 is_arp_allowed_on_bmc(adapter, (*skb))) {
1307 if ((*skb)->protocol == htons(ETH_P_IPV6)) {
1308 struct ipv6hdr *hdr = ipv6_hdr((*skb));
1309 u8 nexthdr = hdr->nexthdr;
1311 if (nexthdr == IPPROTO_ICMPV6) {
1312 struct icmp6hdr *icmp6 = icmp6_hdr((*skb));
1314 switch (icmp6->icmp6_type) {
1315 case NDISC_ROUTER_ADVERTISEMENT:
1316 os2bmc = is_ipv6_ra_filt_enabled(adapter);
1318 case NDISC_NEIGHBOUR_ADVERTISEMENT:
1319 os2bmc = is_ipv6_na_filt_enabled(adapter);
1327 if (is_udp_pkt((*skb))) {
1328 struct udphdr *udp = udp_hdr((*skb));
1330 switch (ntohs(udp->dest)) {
1331 case DHCP_CLIENT_PORT:
1332 os2bmc = is_dhcp_client_filt_enabled(adapter);
1334 case DHCP_SERVER_PORT:
1335 os2bmc = is_dhcp_srvr_filt_enabled(adapter);
1337 case NET_BIOS_PORT1:
1338 case NET_BIOS_PORT2:
1339 os2bmc = is_nbios_filt_enabled(adapter);
1341 case DHCPV6_RAS_PORT:
1342 os2bmc = is_ipv6_ras_filt_enabled(adapter);
1349 /* For packets over a vlan, which are destined
1350 * to BMC, asic expects the vlan to be inline in the packet.
1353 *skb = be_insert_vlan_in_pkt(adapter, *skb, NULL);
1358 static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev)
1360 struct be_adapter *adapter = netdev_priv(netdev);
1361 u16 q_idx = skb_get_queue_mapping(skb);
1362 struct be_tx_obj *txo = &adapter->tx_obj[q_idx];
1363 struct be_wrb_params wrb_params = { 0 };
1364 bool flush = !skb->xmit_more;
1367 skb = be_xmit_workarounds(adapter, skb, &wrb_params);
1371 be_get_wrb_params_from_skb(adapter, skb, &wrb_params);
1373 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1374 if (unlikely(!wrb_cnt)) {
1375 dev_kfree_skb_any(skb);
1379 /* if os2bmc is enabled and if the pkt is destined to bmc,
1380 * enqueue the pkt a 2nd time with mgmt bit set.
1382 if (be_send_pkt_to_bmc(adapter, &skb)) {
1383 BE_WRB_F_SET(wrb_params.features, OS2BMC, 1);
1384 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1385 if (unlikely(!wrb_cnt))
1391 if (be_is_txq_full(txo)) {
1392 netif_stop_subqueue(netdev, q_idx);
1393 tx_stats(txo)->tx_stops++;
1396 if (flush || __netif_subqueue_stopped(netdev, q_idx))
1397 be_xmit_flush(adapter, txo);
1399 return NETDEV_TX_OK;
1401 tx_stats(txo)->tx_drv_drops++;
1402 /* Flush the already enqueued tx requests */
1403 if (flush && txo->pend_wrb_cnt)
1404 be_xmit_flush(adapter, txo);
1406 return NETDEV_TX_OK;
1409 static inline bool be_in_all_promisc(struct be_adapter *adapter)
1411 return (adapter->if_flags & BE_IF_FLAGS_ALL_PROMISCUOUS) ==
1412 BE_IF_FLAGS_ALL_PROMISCUOUS;
1415 static int be_set_vlan_promisc(struct be_adapter *adapter)
1417 struct device *dev = &adapter->pdev->dev;
1420 if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS)
1423 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, ON);
1425 dev_info(dev, "Enabled VLAN promiscuous mode\n");
1426 adapter->if_flags |= BE_IF_FLAGS_VLAN_PROMISCUOUS;
1428 dev_err(dev, "Failed to enable VLAN promiscuous mode\n");
1433 static int be_clear_vlan_promisc(struct be_adapter *adapter)
1435 struct device *dev = &adapter->pdev->dev;
1438 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, OFF);
1440 dev_info(dev, "Disabling VLAN promiscuous mode\n");
1441 adapter->if_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
1447 * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
1448 * If the user configures more, place BE in vlan promiscuous mode.
1450 static int be_vid_config(struct be_adapter *adapter)
1452 struct device *dev = &adapter->pdev->dev;
1453 u16 vids[BE_NUM_VLANS_SUPPORTED];
1457 /* No need to change the VLAN state if the I/F is in promiscuous */
1458 if (adapter->netdev->flags & IFF_PROMISC)
1461 if (adapter->vlans_added > be_max_vlans(adapter))
1462 return be_set_vlan_promisc(adapter);
1464 if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
1465 status = be_clear_vlan_promisc(adapter);
1469 /* Construct VLAN Table to give to HW */
1470 for_each_set_bit(i, adapter->vids, VLAN_N_VID)
1471 vids[num++] = cpu_to_le16(i);
1473 status = be_cmd_vlan_config(adapter, adapter->if_handle, vids, num, 0);
1475 dev_err(dev, "Setting HW VLAN filtering failed\n");
1476 /* Set to VLAN promisc mode as setting VLAN filter failed */
1477 if (addl_status(status) == MCC_ADDL_STATUS_INSUFFICIENT_VLANS ||
1478 addl_status(status) ==
1479 MCC_ADDL_STATUS_INSUFFICIENT_RESOURCES)
1480 return be_set_vlan_promisc(adapter);
1485 static int be_vlan_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
1487 struct be_adapter *adapter = netdev_priv(netdev);
1490 mutex_lock(&adapter->rx_filter_lock);
1492 /* Packets with VID 0 are always received by Lancer by default */
1493 if (lancer_chip(adapter) && vid == 0)
1496 if (test_bit(vid, adapter->vids))
1499 set_bit(vid, adapter->vids);
1500 adapter->vlans_added++;
1502 status = be_vid_config(adapter);
1504 mutex_unlock(&adapter->rx_filter_lock);
1508 static int be_vlan_rem_vid(struct net_device *netdev, __be16 proto, u16 vid)
1510 struct be_adapter *adapter = netdev_priv(netdev);
1513 mutex_lock(&adapter->rx_filter_lock);
1515 /* Packets with VID 0 are always received by Lancer by default */
1516 if (lancer_chip(adapter) && vid == 0)
1519 if (!test_bit(vid, adapter->vids))
1522 clear_bit(vid, adapter->vids);
1523 adapter->vlans_added--;
1525 status = be_vid_config(adapter);
1527 mutex_unlock(&adapter->rx_filter_lock);
1531 static void be_set_all_promisc(struct be_adapter *adapter)
1533 be_cmd_rx_filter(adapter, BE_IF_FLAGS_ALL_PROMISCUOUS, ON);
1534 adapter->if_flags |= BE_IF_FLAGS_ALL_PROMISCUOUS;
1537 static void be_set_mc_promisc(struct be_adapter *adapter)
1541 if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS)
1544 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MCAST_PROMISCUOUS, ON);
1546 adapter->if_flags |= BE_IF_FLAGS_MCAST_PROMISCUOUS;
1549 static void be_set_uc_promisc(struct be_adapter *adapter)
1553 if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS)
1556 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, ON);
1558 adapter->if_flags |= BE_IF_FLAGS_PROMISCUOUS;
1561 static void be_clear_uc_promisc(struct be_adapter *adapter)
1565 if (!(adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS))
1568 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, OFF);
1570 adapter->if_flags &= ~BE_IF_FLAGS_PROMISCUOUS;
1573 /* The below 2 functions are the callback args for __dev_mc_sync/dev_uc_sync().
1574 * We use a single callback function for both sync and unsync. We really don't
1575 * add/remove addresses through this callback. But, we use it to detect changes
1576 * to the uc/mc lists. The entire uc/mc list is programmed in be_set_rx_mode().
1578 static int be_uc_list_update(struct net_device *netdev,
1579 const unsigned char *addr)
1581 struct be_adapter *adapter = netdev_priv(netdev);
1583 adapter->update_uc_list = true;
1587 static int be_mc_list_update(struct net_device *netdev,
1588 const unsigned char *addr)
1590 struct be_adapter *adapter = netdev_priv(netdev);
1592 adapter->update_mc_list = true;
1596 static void be_set_mc_list(struct be_adapter *adapter)
1598 struct net_device *netdev = adapter->netdev;
1599 struct netdev_hw_addr *ha;
1600 bool mc_promisc = false;
1603 netif_addr_lock_bh(netdev);
1604 __dev_mc_sync(netdev, be_mc_list_update, be_mc_list_update);
1606 if (netdev->flags & IFF_PROMISC) {
1607 adapter->update_mc_list = false;
1608 } else if (netdev->flags & IFF_ALLMULTI ||
1609 netdev_mc_count(netdev) > be_max_mc(adapter)) {
1610 /* Enable multicast promisc if num configured exceeds
1614 adapter->update_mc_list = false;
1615 } else if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS) {
1616 /* Update mc-list unconditionally if the iface was previously
1617 * in mc-promisc mode and now is out of that mode.
1619 adapter->update_mc_list = true;
1622 if (adapter->update_mc_list) {
1625 /* cache the mc-list in adapter */
1626 netdev_for_each_mc_addr(ha, netdev) {
1627 ether_addr_copy(adapter->mc_list[i].mac, ha->addr);
1630 adapter->mc_count = netdev_mc_count(netdev);
1632 netif_addr_unlock_bh(netdev);
1635 be_set_mc_promisc(adapter);
1636 } else if (adapter->update_mc_list) {
1637 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, ON);
1639 adapter->if_flags &= ~BE_IF_FLAGS_MCAST_PROMISCUOUS;
1641 be_set_mc_promisc(adapter);
1643 adapter->update_mc_list = false;
1647 static void be_clear_mc_list(struct be_adapter *adapter)
1649 struct net_device *netdev = adapter->netdev;
1651 __dev_mc_unsync(netdev, NULL);
1652 be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, OFF);
1653 adapter->mc_count = 0;
1656 static int be_uc_mac_add(struct be_adapter *adapter, int uc_idx)
1658 if (ether_addr_equal((u8 *)&adapter->uc_list[uc_idx * ETH_ALEN],
1659 adapter->dev_mac)) {
1660 adapter->pmac_id[uc_idx + 1] = adapter->pmac_id[0];
1664 return be_cmd_pmac_add(adapter,
1665 (u8 *)&adapter->uc_list[uc_idx * ETH_ALEN],
1667 &adapter->pmac_id[uc_idx + 1], 0);
1670 static void be_uc_mac_del(struct be_adapter *adapter, int pmac_id)
1672 if (pmac_id == adapter->pmac_id[0])
1675 be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0);
1678 static void be_set_uc_list(struct be_adapter *adapter)
1680 struct net_device *netdev = adapter->netdev;
1681 struct netdev_hw_addr *ha;
1682 bool uc_promisc = false;
1683 int curr_uc_macs = 0, i;
1685 netif_addr_lock_bh(netdev);
1686 __dev_uc_sync(netdev, be_uc_list_update, be_uc_list_update);
1688 if (netdev->flags & IFF_PROMISC) {
1689 adapter->update_uc_list = false;
1690 } else if (netdev_uc_count(netdev) > (be_max_uc(adapter) - 1)) {
1692 adapter->update_uc_list = false;
1693 } else if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS) {
1694 /* Update uc-list unconditionally if the iface was previously
1695 * in uc-promisc mode and now is out of that mode.
1697 adapter->update_uc_list = true;
1700 if (adapter->update_uc_list) {
1701 i = 1; /* First slot is claimed by the Primary MAC */
1703 /* cache the uc-list in adapter array */
1704 netdev_for_each_uc_addr(ha, netdev) {
1705 ether_addr_copy(adapter->uc_list[i].mac, ha->addr);
1708 curr_uc_macs = netdev_uc_count(netdev);
1710 netif_addr_unlock_bh(netdev);
1713 be_set_uc_promisc(adapter);
1714 } else if (adapter->update_uc_list) {
1715 be_clear_uc_promisc(adapter);
1717 for (i = 0; i < adapter->uc_macs; i++)
1718 be_uc_mac_del(adapter, adapter->pmac_id[i + 1]);
1720 for (i = 0; i < curr_uc_macs; i++)
1721 be_uc_mac_add(adapter, i);
1722 adapter->uc_macs = curr_uc_macs;
1723 adapter->update_uc_list = false;
1727 static void be_clear_uc_list(struct be_adapter *adapter)
1729 struct net_device *netdev = adapter->netdev;
1732 __dev_uc_unsync(netdev, NULL);
1733 for (i = 0; i < adapter->uc_macs; i++)
1734 be_uc_mac_del(adapter, adapter->pmac_id[i + 1]);
1736 adapter->uc_macs = 0;
1739 static void __be_set_rx_mode(struct be_adapter *adapter)
1741 struct net_device *netdev = adapter->netdev;
1743 mutex_lock(&adapter->rx_filter_lock);
1745 if (netdev->flags & IFF_PROMISC) {
1746 if (!be_in_all_promisc(adapter))
1747 be_set_all_promisc(adapter);
1748 } else if (be_in_all_promisc(adapter)) {
1749 /* We need to re-program the vlan-list or clear
1750 * vlan-promisc mode (if needed) when the interface
1751 * comes out of promisc mode.
1753 be_vid_config(adapter);
1756 be_set_uc_list(adapter);
1757 be_set_mc_list(adapter);
1759 mutex_unlock(&adapter->rx_filter_lock);
1762 static void be_work_set_rx_mode(struct work_struct *work)
1764 struct be_cmd_work *cmd_work =
1765 container_of(work, struct be_cmd_work, work);
1767 __be_set_rx_mode(cmd_work->adapter);
1771 static int be_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1773 struct be_adapter *adapter = netdev_priv(netdev);
1774 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1777 if (!sriov_enabled(adapter))
1780 if (!is_valid_ether_addr(mac) || vf >= adapter->num_vfs)
1783 /* Proceed further only if user provided MAC is different
1786 if (ether_addr_equal(mac, vf_cfg->mac_addr))
1789 if (BEx_chip(adapter)) {
1790 be_cmd_pmac_del(adapter, vf_cfg->if_handle, vf_cfg->pmac_id,
1793 status = be_cmd_pmac_add(adapter, mac, vf_cfg->if_handle,
1794 &vf_cfg->pmac_id, vf + 1);
1796 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
1801 dev_err(&adapter->pdev->dev, "MAC %pM set on VF %d Failed: %#x",
1803 return be_cmd_status(status);
1806 ether_addr_copy(vf_cfg->mac_addr, mac);
1811 static int be_get_vf_config(struct net_device *netdev, int vf,
1812 struct ifla_vf_info *vi)
1814 struct be_adapter *adapter = netdev_priv(netdev);
1815 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1817 if (!sriov_enabled(adapter))
1820 if (vf >= adapter->num_vfs)
1824 vi->max_tx_rate = vf_cfg->tx_rate;
1825 vi->min_tx_rate = 0;
1826 vi->vlan = vf_cfg->vlan_tag & VLAN_VID_MASK;
1827 vi->qos = vf_cfg->vlan_tag >> VLAN_PRIO_SHIFT;
1828 memcpy(&vi->mac, vf_cfg->mac_addr, ETH_ALEN);
1829 vi->linkstate = adapter->vf_cfg[vf].plink_tracking;
1830 vi->spoofchk = adapter->vf_cfg[vf].spoofchk;
1835 static int be_set_vf_tvt(struct be_adapter *adapter, int vf, u16 vlan)
1837 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1838 u16 vids[BE_NUM_VLANS_SUPPORTED];
1839 int vf_if_id = vf_cfg->if_handle;
1842 /* Enable Transparent VLAN Tagging */
1843 status = be_cmd_set_hsw_config(adapter, vlan, vf + 1, vf_if_id, 0, 0);
1847 /* Clear pre-programmed VLAN filters on VF if any, if TVT is enabled */
1849 status = be_cmd_vlan_config(adapter, vf_if_id, vids, 1, vf + 1);
1851 dev_info(&adapter->pdev->dev,
1852 "Cleared guest VLANs on VF%d", vf);
1854 /* After TVT is enabled, disallow VFs to program VLAN filters */
1855 if (vf_cfg->privileges & BE_PRIV_FILTMGMT) {
1856 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges &
1857 ~BE_PRIV_FILTMGMT, vf + 1);
1859 vf_cfg->privileges &= ~BE_PRIV_FILTMGMT;
1864 static int be_clear_vf_tvt(struct be_adapter *adapter, int vf)
1866 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1867 struct device *dev = &adapter->pdev->dev;
1870 /* Reset Transparent VLAN Tagging. */
1871 status = be_cmd_set_hsw_config(adapter, BE_RESET_VLAN_TAG_ID, vf + 1,
1872 vf_cfg->if_handle, 0, 0);
1876 /* Allow VFs to program VLAN filtering */
1877 if (!(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
1878 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges |
1879 BE_PRIV_FILTMGMT, vf + 1);
1881 vf_cfg->privileges |= BE_PRIV_FILTMGMT;
1882 dev_info(dev, "VF%d: FILTMGMT priv enabled", vf);
1887 "Disable/re-enable i/f in VM to clear Transparent VLAN tag");
1891 static int be_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos,
1894 struct be_adapter *adapter = netdev_priv(netdev);
1895 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1898 if (!sriov_enabled(adapter))
1901 if (vf >= adapter->num_vfs || vlan > 4095 || qos > 7)
1904 if (vlan_proto != htons(ETH_P_8021Q))
1905 return -EPROTONOSUPPORT;
1908 vlan |= qos << VLAN_PRIO_SHIFT;
1909 status = be_set_vf_tvt(adapter, vf, vlan);
1911 status = be_clear_vf_tvt(adapter, vf);
1915 dev_err(&adapter->pdev->dev,
1916 "VLAN %d config on VF %d failed : %#x\n", vlan, vf,
1918 return be_cmd_status(status);
1921 vf_cfg->vlan_tag = vlan;
1925 static int be_set_vf_tx_rate(struct net_device *netdev, int vf,
1926 int min_tx_rate, int max_tx_rate)
1928 struct be_adapter *adapter = netdev_priv(netdev);
1929 struct device *dev = &adapter->pdev->dev;
1930 int percent_rate, status = 0;
1934 if (!sriov_enabled(adapter))
1937 if (vf >= adapter->num_vfs)
1946 status = be_cmd_link_status_query(adapter, &link_speed,
1952 dev_err(dev, "TX-rate setting not allowed when link is down\n");
1957 if (max_tx_rate < 100 || max_tx_rate > link_speed) {
1958 dev_err(dev, "TX-rate must be between 100 and %d Mbps\n",
1964 /* On Skyhawk the QOS setting must be done only as a % value */
1965 percent_rate = link_speed / 100;
1966 if (skyhawk_chip(adapter) && (max_tx_rate % percent_rate)) {
1967 dev_err(dev, "TX-rate must be a multiple of %d Mbps\n",
1974 status = be_cmd_config_qos(adapter, max_tx_rate, link_speed, vf + 1);
1978 adapter->vf_cfg[vf].tx_rate = max_tx_rate;
1982 dev_err(dev, "TX-rate setting of %dMbps on VF%d failed\n",
1984 return be_cmd_status(status);
1987 static int be_set_vf_link_state(struct net_device *netdev, int vf,
1990 struct be_adapter *adapter = netdev_priv(netdev);
1993 if (!sriov_enabled(adapter))
1996 if (vf >= adapter->num_vfs)
1999 status = be_cmd_set_logical_link_config(adapter, link_state, vf+1);
2001 dev_err(&adapter->pdev->dev,
2002 "Link state change on VF %d failed: %#x\n", vf, status);
2003 return be_cmd_status(status);
2006 adapter->vf_cfg[vf].plink_tracking = link_state;
2011 static int be_set_vf_spoofchk(struct net_device *netdev, int vf, bool enable)
2013 struct be_adapter *adapter = netdev_priv(netdev);
2014 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
2018 if (!sriov_enabled(adapter))
2021 if (vf >= adapter->num_vfs)
2024 if (BEx_chip(adapter))
2027 if (enable == vf_cfg->spoofchk)
2030 spoofchk = enable ? ENABLE_MAC_SPOOFCHK : DISABLE_MAC_SPOOFCHK;
2032 status = be_cmd_set_hsw_config(adapter, 0, vf + 1, vf_cfg->if_handle,
2035 dev_err(&adapter->pdev->dev,
2036 "Spoofchk change on VF %d failed: %#x\n", vf, status);
2037 return be_cmd_status(status);
2040 vf_cfg->spoofchk = enable;
2044 static void be_aic_update(struct be_aic_obj *aic, u64 rx_pkts, u64 tx_pkts,
2047 aic->rx_pkts_prev = rx_pkts;
2048 aic->tx_reqs_prev = tx_pkts;
2052 static int be_get_new_eqd(struct be_eq_obj *eqo)
2054 struct be_adapter *adapter = eqo->adapter;
2056 struct be_aic_obj *aic;
2057 struct be_rx_obj *rxo;
2058 struct be_tx_obj *txo;
2059 u64 rx_pkts = 0, tx_pkts = 0;
2064 aic = &adapter->aic_obj[eqo->idx];
2072 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
2074 start = u64_stats_fetch_begin_irq(&rxo->stats.sync);
2075 rx_pkts += rxo->stats.rx_pkts;
2076 } while (u64_stats_fetch_retry_irq(&rxo->stats.sync, start));
2079 for_all_tx_queues_on_eq(adapter, eqo, txo, i) {
2081 start = u64_stats_fetch_begin_irq(&txo->stats.sync);
2082 tx_pkts += txo->stats.tx_reqs;
2083 } while (u64_stats_fetch_retry_irq(&txo->stats.sync, start));
2086 /* Skip, if wrapped around or first calculation */
2088 if (!aic->jiffies || time_before(now, aic->jiffies) ||
2089 rx_pkts < aic->rx_pkts_prev ||
2090 tx_pkts < aic->tx_reqs_prev) {
2091 be_aic_update(aic, rx_pkts, tx_pkts, now);
2092 return aic->prev_eqd;
2095 delta = jiffies_to_msecs(now - aic->jiffies);
2097 return aic->prev_eqd;
2099 pps = (((u32)(rx_pkts - aic->rx_pkts_prev) * 1000) / delta) +
2100 (((u32)(tx_pkts - aic->tx_reqs_prev) * 1000) / delta);
2101 eqd = (pps / 15000) << 2;
2105 eqd = min_t(u32, eqd, aic->max_eqd);
2106 eqd = max_t(u32, eqd, aic->min_eqd);
2108 be_aic_update(aic, rx_pkts, tx_pkts, now);
2113 /* For Skyhawk-R only */
2114 static u32 be_get_eq_delay_mult_enc(struct be_eq_obj *eqo)
2116 struct be_adapter *adapter = eqo->adapter;
2117 struct be_aic_obj *aic = &adapter->aic_obj[eqo->idx];
2118 ulong now = jiffies;
2125 if (jiffies_to_msecs(now - aic->jiffies) < 1)
2126 eqd = aic->prev_eqd;
2128 eqd = be_get_new_eqd(eqo);
2131 mult_enc = R2I_DLY_ENC_1;
2133 mult_enc = R2I_DLY_ENC_2;
2135 mult_enc = R2I_DLY_ENC_3;
2137 mult_enc = R2I_DLY_ENC_0;
2139 aic->prev_eqd = eqd;
2144 void be_eqd_update(struct be_adapter *adapter, bool force_update)
2146 struct be_set_eqd set_eqd[MAX_EVT_QS];
2147 struct be_aic_obj *aic;
2148 struct be_eq_obj *eqo;
2149 int i, num = 0, eqd;
2151 for_all_evt_queues(adapter, eqo, i) {
2152 aic = &adapter->aic_obj[eqo->idx];
2153 eqd = be_get_new_eqd(eqo);
2154 if (force_update || eqd != aic->prev_eqd) {
2155 set_eqd[num].delay_multiplier = (eqd * 65)/100;
2156 set_eqd[num].eq_id = eqo->q.id;
2157 aic->prev_eqd = eqd;
2163 be_cmd_modify_eqd(adapter, set_eqd, num);
2166 static void be_rx_stats_update(struct be_rx_obj *rxo,
2167 struct be_rx_compl_info *rxcp)
2169 struct be_rx_stats *stats = rx_stats(rxo);
2171 u64_stats_update_begin(&stats->sync);
2173 stats->rx_bytes += rxcp->pkt_size;
2176 stats->rx_vxlan_offload_pkts++;
2177 if (rxcp->pkt_type == BE_MULTICAST_PACKET)
2178 stats->rx_mcast_pkts++;
2180 stats->rx_compl_err++;
2181 u64_stats_update_end(&stats->sync);
2184 static inline bool csum_passed(struct be_rx_compl_info *rxcp)
2186 /* L4 checksum is not reliable for non TCP/UDP packets.
2187 * Also ignore ipcksm for ipv6 pkts
2189 return (rxcp->tcpf || rxcp->udpf) && rxcp->l4_csum &&
2190 (rxcp->ip_csum || rxcp->ipv6) && !rxcp->err;
2193 static struct be_rx_page_info *get_rx_page_info(struct be_rx_obj *rxo)
2195 struct be_adapter *adapter = rxo->adapter;
2196 struct be_rx_page_info *rx_page_info;
2197 struct be_queue_info *rxq = &rxo->q;
2198 u32 frag_idx = rxq->tail;
2200 rx_page_info = &rxo->page_info_tbl[frag_idx];
2201 BUG_ON(!rx_page_info->page);
2203 if (rx_page_info->last_frag) {
2204 dma_unmap_page(&adapter->pdev->dev,
2205 dma_unmap_addr(rx_page_info, bus),
2206 adapter->big_page_size, DMA_FROM_DEVICE);
2207 rx_page_info->last_frag = false;
2209 dma_sync_single_for_cpu(&adapter->pdev->dev,
2210 dma_unmap_addr(rx_page_info, bus),
2211 rx_frag_size, DMA_FROM_DEVICE);
2214 queue_tail_inc(rxq);
2215 atomic_dec(&rxq->used);
2216 return rx_page_info;
2219 /* Throwaway the data in the Rx completion */
2220 static void be_rx_compl_discard(struct be_rx_obj *rxo,
2221 struct be_rx_compl_info *rxcp)
2223 struct be_rx_page_info *page_info;
2224 u16 i, num_rcvd = rxcp->num_rcvd;
2226 for (i = 0; i < num_rcvd; i++) {
2227 page_info = get_rx_page_info(rxo);
2228 put_page(page_info->page);
2229 memset(page_info, 0, sizeof(*page_info));
2234 * skb_fill_rx_data forms a complete skb for an ether frame
2235 * indicated by rxcp.
2237 static void skb_fill_rx_data(struct be_rx_obj *rxo, struct sk_buff *skb,
2238 struct be_rx_compl_info *rxcp)
2240 struct be_rx_page_info *page_info;
2242 u16 hdr_len, curr_frag_len, remaining;
2245 page_info = get_rx_page_info(rxo);
2246 start = page_address(page_info->page) + page_info->page_offset;
2249 /* Copy data in the first descriptor of this completion */
2250 curr_frag_len = min(rxcp->pkt_size, rx_frag_size);
2252 skb->len = curr_frag_len;
2253 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
2254 memcpy(skb->data, start, curr_frag_len);
2255 /* Complete packet has now been moved to data */
2256 put_page(page_info->page);
2258 skb->tail += curr_frag_len;
2261 memcpy(skb->data, start, hdr_len);
2262 skb_shinfo(skb)->nr_frags = 1;
2263 skb_frag_set_page(skb, 0, page_info->page);
2264 skb_shinfo(skb)->frags[0].page_offset =
2265 page_info->page_offset + hdr_len;
2266 skb_frag_size_set(&skb_shinfo(skb)->frags[0],
2267 curr_frag_len - hdr_len);
2268 skb->data_len = curr_frag_len - hdr_len;
2269 skb->truesize += rx_frag_size;
2270 skb->tail += hdr_len;
2272 page_info->page = NULL;
2274 if (rxcp->pkt_size <= rx_frag_size) {
2275 BUG_ON(rxcp->num_rcvd != 1);
2279 /* More frags present for this completion */
2280 remaining = rxcp->pkt_size - curr_frag_len;
2281 for (i = 1, j = 0; i < rxcp->num_rcvd; i++) {
2282 page_info = get_rx_page_info(rxo);
2283 curr_frag_len = min(remaining, rx_frag_size);
2285 /* Coalesce all frags from the same physical page in one slot */
2286 if (page_info->page_offset == 0) {
2289 skb_frag_set_page(skb, j, page_info->page);
2290 skb_shinfo(skb)->frags[j].page_offset =
2291 page_info->page_offset;
2292 skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
2293 skb_shinfo(skb)->nr_frags++;
2295 put_page(page_info->page);
2298 skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
2299 skb->len += curr_frag_len;
2300 skb->data_len += curr_frag_len;
2301 skb->truesize += rx_frag_size;
2302 remaining -= curr_frag_len;
2303 page_info->page = NULL;
2305 BUG_ON(j > MAX_SKB_FRAGS);
2308 /* Process the RX completion indicated by rxcp when GRO is disabled */
2309 static void be_rx_compl_process(struct be_rx_obj *rxo, struct napi_struct *napi,
2310 struct be_rx_compl_info *rxcp)
2312 struct be_adapter *adapter = rxo->adapter;
2313 struct net_device *netdev = adapter->netdev;
2314 struct sk_buff *skb;
2316 skb = netdev_alloc_skb_ip_align(netdev, BE_RX_SKB_ALLOC_SIZE);
2317 if (unlikely(!skb)) {
2318 rx_stats(rxo)->rx_drops_no_skbs++;
2319 be_rx_compl_discard(rxo, rxcp);
2323 skb_fill_rx_data(rxo, skb, rxcp);
2325 if (likely((netdev->features & NETIF_F_RXCSUM) && csum_passed(rxcp)))
2326 skb->ip_summed = CHECKSUM_UNNECESSARY;
2328 skb_checksum_none_assert(skb);
2330 skb->protocol = eth_type_trans(skb, netdev);
2331 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2332 if (netdev->features & NETIF_F_RXHASH)
2333 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2335 skb->csum_level = rxcp->tunneled;
2336 skb_mark_napi_id(skb, napi);
2339 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2341 netif_receive_skb(skb);
2344 /* Process the RX completion indicated by rxcp when GRO is enabled */
2345 static void be_rx_compl_process_gro(struct be_rx_obj *rxo,
2346 struct napi_struct *napi,
2347 struct be_rx_compl_info *rxcp)
2349 struct be_adapter *adapter = rxo->adapter;
2350 struct be_rx_page_info *page_info;
2351 struct sk_buff *skb = NULL;
2352 u16 remaining, curr_frag_len;
2355 skb = napi_get_frags(napi);
2357 be_rx_compl_discard(rxo, rxcp);
2361 remaining = rxcp->pkt_size;
2362 for (i = 0, j = -1; i < rxcp->num_rcvd; i++) {
2363 page_info = get_rx_page_info(rxo);
2365 curr_frag_len = min(remaining, rx_frag_size);
2367 /* Coalesce all frags from the same physical page in one slot */
2368 if (i == 0 || page_info->page_offset == 0) {
2369 /* First frag or Fresh page */
2371 skb_frag_set_page(skb, j, page_info->page);
2372 skb_shinfo(skb)->frags[j].page_offset =
2373 page_info->page_offset;
2374 skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
2376 put_page(page_info->page);
2378 skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
2379 skb->truesize += rx_frag_size;
2380 remaining -= curr_frag_len;
2381 memset(page_info, 0, sizeof(*page_info));
2383 BUG_ON(j > MAX_SKB_FRAGS);
2385 skb_shinfo(skb)->nr_frags = j + 1;
2386 skb->len = rxcp->pkt_size;
2387 skb->data_len = rxcp->pkt_size;
2388 skb->ip_summed = CHECKSUM_UNNECESSARY;
2389 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2390 if (adapter->netdev->features & NETIF_F_RXHASH)
2391 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2393 skb->csum_level = rxcp->tunneled;
2396 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2398 napi_gro_frags(napi);
2401 static void be_parse_rx_compl_v1(struct be_eth_rx_compl *compl,
2402 struct be_rx_compl_info *rxcp)
2404 rxcp->pkt_size = GET_RX_COMPL_V1_BITS(pktsize, compl);
2405 rxcp->vlanf = GET_RX_COMPL_V1_BITS(vtp, compl);
2406 rxcp->err = GET_RX_COMPL_V1_BITS(err, compl);
2407 rxcp->tcpf = GET_RX_COMPL_V1_BITS(tcpf, compl);
2408 rxcp->udpf = GET_RX_COMPL_V1_BITS(udpf, compl);
2409 rxcp->ip_csum = GET_RX_COMPL_V1_BITS(ipcksm, compl);
2410 rxcp->l4_csum = GET_RX_COMPL_V1_BITS(l4_cksm, compl);
2411 rxcp->ipv6 = GET_RX_COMPL_V1_BITS(ip_version, compl);
2412 rxcp->num_rcvd = GET_RX_COMPL_V1_BITS(numfrags, compl);
2413 rxcp->pkt_type = GET_RX_COMPL_V1_BITS(cast_enc, compl);
2414 rxcp->rss_hash = GET_RX_COMPL_V1_BITS(rsshash, compl);
2416 rxcp->qnq = GET_RX_COMPL_V1_BITS(qnq, compl);
2417 rxcp->vlan_tag = GET_RX_COMPL_V1_BITS(vlan_tag, compl);
2419 rxcp->port = GET_RX_COMPL_V1_BITS(port, compl);
2421 GET_RX_COMPL_V1_BITS(tunneled, compl);
2424 static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl,
2425 struct be_rx_compl_info *rxcp)
2427 rxcp->pkt_size = GET_RX_COMPL_V0_BITS(pktsize, compl);
2428 rxcp->vlanf = GET_RX_COMPL_V0_BITS(vtp, compl);
2429 rxcp->err = GET_RX_COMPL_V0_BITS(err, compl);
2430 rxcp->tcpf = GET_RX_COMPL_V0_BITS(tcpf, compl);
2431 rxcp->udpf = GET_RX_COMPL_V0_BITS(udpf, compl);
2432 rxcp->ip_csum = GET_RX_COMPL_V0_BITS(ipcksm, compl);
2433 rxcp->l4_csum = GET_RX_COMPL_V0_BITS(l4_cksm, compl);
2434 rxcp->ipv6 = GET_RX_COMPL_V0_BITS(ip_version, compl);
2435 rxcp->num_rcvd = GET_RX_COMPL_V0_BITS(numfrags, compl);
2436 rxcp->pkt_type = GET_RX_COMPL_V0_BITS(cast_enc, compl);
2437 rxcp->rss_hash = GET_RX_COMPL_V0_BITS(rsshash, compl);
2439 rxcp->qnq = GET_RX_COMPL_V0_BITS(qnq, compl);
2440 rxcp->vlan_tag = GET_RX_COMPL_V0_BITS(vlan_tag, compl);
2442 rxcp->port = GET_RX_COMPL_V0_BITS(port, compl);
2443 rxcp->ip_frag = GET_RX_COMPL_V0_BITS(ip_frag, compl);
2446 static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo)
2448 struct be_eth_rx_compl *compl = queue_tail_node(&rxo->cq);
2449 struct be_rx_compl_info *rxcp = &rxo->rxcp;
2450 struct be_adapter *adapter = rxo->adapter;
2452 /* For checking the valid bit it is Ok to use either definition as the
2453 * valid bit is at the same position in both v0 and v1 Rx compl */
2454 if (compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] == 0)
2458 be_dws_le_to_cpu(compl, sizeof(*compl));
2460 if (adapter->be3_native)
2461 be_parse_rx_compl_v1(compl, rxcp);
2463 be_parse_rx_compl_v0(compl, rxcp);
2469 /* In QNQ modes, if qnq bit is not set, then the packet was
2470 * tagged only with the transparent outer vlan-tag and must
2471 * not be treated as a vlan packet by host
2473 if (be_is_qnq_mode(adapter) && !rxcp->qnq)
2476 if (!lancer_chip(adapter))
2477 rxcp->vlan_tag = swab16(rxcp->vlan_tag);
2479 if (adapter->pvid == (rxcp->vlan_tag & VLAN_VID_MASK) &&
2480 !test_bit(rxcp->vlan_tag, adapter->vids))
2484 /* As the compl has been parsed, reset it; we wont touch it again */
2485 compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] = 0;
2487 queue_tail_inc(&rxo->cq);
2491 static inline struct page *be_alloc_pages(u32 size, gfp_t gfp)
2493 u32 order = get_order(size);
2497 return alloc_pages(gfp, order);
2501 * Allocate a page, split it to fragments of size rx_frag_size and post as
2502 * receive buffers to BE
2504 static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp, u32 frags_needed)
2506 struct be_adapter *adapter = rxo->adapter;
2507 struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
2508 struct be_queue_info *rxq = &rxo->q;
2509 struct page *pagep = NULL;
2510 struct device *dev = &adapter->pdev->dev;
2511 struct be_eth_rx_d *rxd;
2512 u64 page_dmaaddr = 0, frag_dmaaddr;
2513 u32 posted, page_offset = 0, notify = 0;
2515 page_info = &rxo->page_info_tbl[rxq->head];
2516 for (posted = 0; posted < frags_needed && !page_info->page; posted++) {
2518 pagep = be_alloc_pages(adapter->big_page_size, gfp);
2519 if (unlikely(!pagep)) {
2520 rx_stats(rxo)->rx_post_fail++;
2523 page_dmaaddr = dma_map_page(dev, pagep, 0,
2524 adapter->big_page_size,
2526 if (dma_mapping_error(dev, page_dmaaddr)) {
2529 adapter->drv_stats.dma_map_errors++;
2535 page_offset += rx_frag_size;
2537 page_info->page_offset = page_offset;
2538 page_info->page = pagep;
2540 rxd = queue_head_node(rxq);
2541 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
2542 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
2543 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
2545 /* Any space left in the current big page for another frag? */
2546 if ((page_offset + rx_frag_size + rx_frag_size) >
2547 adapter->big_page_size) {
2549 page_info->last_frag = true;
2550 dma_unmap_addr_set(page_info, bus, page_dmaaddr);
2552 dma_unmap_addr_set(page_info, bus, frag_dmaaddr);
2555 prev_page_info = page_info;
2556 queue_head_inc(rxq);
2557 page_info = &rxo->page_info_tbl[rxq->head];
2560 /* Mark the last frag of a page when we break out of the above loop
2561 * with no more slots available in the RXQ
2564 prev_page_info->last_frag = true;
2565 dma_unmap_addr_set(prev_page_info, bus, page_dmaaddr);
2569 atomic_add(posted, &rxq->used);
2570 if (rxo->rx_post_starved)
2571 rxo->rx_post_starved = false;
2573 notify = min(MAX_NUM_POST_ERX_DB, posted);
2574 be_rxq_notify(adapter, rxq->id, notify);
2577 } else if (atomic_read(&rxq->used) == 0) {
2578 /* Let be_worker replenish when memory is available */
2579 rxo->rx_post_starved = true;
2583 static struct be_tx_compl_info *be_tx_compl_get(struct be_tx_obj *txo)
2585 struct be_queue_info *tx_cq = &txo->cq;
2586 struct be_tx_compl_info *txcp = &txo->txcp;
2587 struct be_eth_tx_compl *compl = queue_tail_node(tx_cq);
2589 if (compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
2592 /* Ensure load ordering of valid bit dword and other dwords below */
2594 be_dws_le_to_cpu(compl, sizeof(*compl));
2596 txcp->status = GET_TX_COMPL_BITS(status, compl);
2597 txcp->end_index = GET_TX_COMPL_BITS(wrb_index, compl);
2599 compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
2600 queue_tail_inc(tx_cq);
2604 static u16 be_tx_compl_process(struct be_adapter *adapter,
2605 struct be_tx_obj *txo, u16 last_index)
2607 struct sk_buff **sent_skbs = txo->sent_skb_list;
2608 struct be_queue_info *txq = &txo->q;
2609 struct sk_buff *skb = NULL;
2610 bool unmap_skb_hdr = false;
2611 struct be_eth_wrb *wrb;
2616 if (sent_skbs[txq->tail]) {
2617 /* Free skb from prev req */
2619 dev_consume_skb_any(skb);
2620 skb = sent_skbs[txq->tail];
2621 sent_skbs[txq->tail] = NULL;
2622 queue_tail_inc(txq); /* skip hdr wrb */
2624 unmap_skb_hdr = true;
2626 wrb = queue_tail_node(txq);
2627 frag_index = txq->tail;
2628 unmap_tx_frag(&adapter->pdev->dev, wrb,
2629 (unmap_skb_hdr && skb_headlen(skb)));
2630 unmap_skb_hdr = false;
2631 queue_tail_inc(txq);
2633 } while (frag_index != last_index);
2634 dev_consume_skb_any(skb);
2639 /* Return the number of events in the event queue */
2640 static inline int events_get(struct be_eq_obj *eqo)
2642 struct be_eq_entry *eqe;
2646 eqe = queue_tail_node(&eqo->q);
2653 queue_tail_inc(&eqo->q);
2659 /* Leaves the EQ is disarmed state */
2660 static void be_eq_clean(struct be_eq_obj *eqo)
2662 int num = events_get(eqo);
2664 be_eq_notify(eqo->adapter, eqo->q.id, false, true, num, 0);
2667 /* Free posted rx buffers that were not used */
2668 static void be_rxq_clean(struct be_rx_obj *rxo)
2670 struct be_queue_info *rxq = &rxo->q;
2671 struct be_rx_page_info *page_info;
2673 while (atomic_read(&rxq->used) > 0) {
2674 page_info = get_rx_page_info(rxo);
2675 put_page(page_info->page);
2676 memset(page_info, 0, sizeof(*page_info));
2678 BUG_ON(atomic_read(&rxq->used));
2683 static void be_rx_cq_clean(struct be_rx_obj *rxo)
2685 struct be_queue_info *rx_cq = &rxo->cq;
2686 struct be_rx_compl_info *rxcp;
2687 struct be_adapter *adapter = rxo->adapter;
2690 /* Consume pending rx completions.
2691 * Wait for the flush completion (identified by zero num_rcvd)
2692 * to arrive. Notify CQ even when there are no more CQ entries
2693 * for HW to flush partially coalesced CQ entries.
2694 * In Lancer, there is no need to wait for flush compl.
2697 rxcp = be_rx_compl_get(rxo);
2699 if (lancer_chip(adapter))
2702 if (flush_wait++ > 50 ||
2703 be_check_error(adapter,
2705 dev_warn(&adapter->pdev->dev,
2706 "did not receive flush compl\n");
2709 be_cq_notify(adapter, rx_cq->id, true, 0);
2712 be_rx_compl_discard(rxo, rxcp);
2713 be_cq_notify(adapter, rx_cq->id, false, 1);
2714 if (rxcp->num_rcvd == 0)
2719 /* After cleanup, leave the CQ in unarmed state */
2720 be_cq_notify(adapter, rx_cq->id, false, 0);
2723 static void be_tx_compl_clean(struct be_adapter *adapter)
2725 struct device *dev = &adapter->pdev->dev;
2726 u16 cmpl = 0, timeo = 0, num_wrbs = 0;
2727 struct be_tx_compl_info *txcp;
2728 struct be_queue_info *txq;
2729 u32 end_idx, notified_idx;
2730 struct be_tx_obj *txo;
2731 int i, pending_txqs;
2733 /* Stop polling for compls when HW has been silent for 10ms */
2735 pending_txqs = adapter->num_tx_qs;
2737 for_all_tx_queues(adapter, txo, i) {
2741 while ((txcp = be_tx_compl_get(txo))) {
2743 be_tx_compl_process(adapter, txo,
2748 be_cq_notify(adapter, txo->cq.id, false, cmpl);
2749 atomic_sub(num_wrbs, &txq->used);
2752 if (!be_is_tx_compl_pending(txo))
2756 if (pending_txqs == 0 || ++timeo > 10 ||
2757 be_check_error(adapter, BE_ERROR_HW))
2763 /* Free enqueued TX that was never notified to HW */
2764 for_all_tx_queues(adapter, txo, i) {
2767 if (atomic_read(&txq->used)) {
2768 dev_info(dev, "txq%d: cleaning %d pending tx-wrbs\n",
2769 i, atomic_read(&txq->used));
2770 notified_idx = txq->tail;
2771 end_idx = txq->tail;
2772 index_adv(&end_idx, atomic_read(&txq->used) - 1,
2774 /* Use the tx-compl process logic to handle requests
2775 * that were not sent to the HW.
2777 num_wrbs = be_tx_compl_process(adapter, txo, end_idx);
2778 atomic_sub(num_wrbs, &txq->used);
2779 BUG_ON(atomic_read(&txq->used));
2780 txo->pend_wrb_cnt = 0;
2781 /* Since hw was never notified of these requests,
2784 txq->head = notified_idx;
2785 txq->tail = notified_idx;
2790 static void be_evt_queues_destroy(struct be_adapter *adapter)
2792 struct be_eq_obj *eqo;
2795 for_all_evt_queues(adapter, eqo, i) {
2796 if (eqo->q.created) {
2798 be_cmd_q_destroy(adapter, &eqo->q, QTYPE_EQ);
2799 netif_napi_del(&eqo->napi);
2800 free_cpumask_var(eqo->affinity_mask);
2802 be_queue_free(adapter, &eqo->q);
2806 static int be_evt_queues_create(struct be_adapter *adapter)
2808 struct be_queue_info *eq;
2809 struct be_eq_obj *eqo;
2810 struct be_aic_obj *aic;
2813 /* need enough EQs to service both RX and TX queues */
2814 adapter->num_evt_qs = min_t(u16, num_irqs(adapter),
2815 max(adapter->cfg_num_rx_irqs,
2816 adapter->cfg_num_tx_irqs));
2818 for_all_evt_queues(adapter, eqo, i) {
2819 int numa_node = dev_to_node(&adapter->pdev->dev);
2821 aic = &adapter->aic_obj[i];
2822 eqo->adapter = adapter;
2824 aic->max_eqd = BE_MAX_EQD;
2828 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
2829 sizeof(struct be_eq_entry));
2833 rc = be_cmd_eq_create(adapter, eqo);
2837 if (!zalloc_cpumask_var(&eqo->affinity_mask, GFP_KERNEL))
2839 cpumask_set_cpu(cpumask_local_spread(i, numa_node),
2840 eqo->affinity_mask);
2841 netif_napi_add(adapter->netdev, &eqo->napi, be_poll,
2847 static void be_mcc_queues_destroy(struct be_adapter *adapter)
2849 struct be_queue_info *q;
2851 q = &adapter->mcc_obj.q;
2853 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
2854 be_queue_free(adapter, q);
2856 q = &adapter->mcc_obj.cq;
2858 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2859 be_queue_free(adapter, q);
2862 /* Must be called only after TX qs are created as MCC shares TX EQ */
2863 static int be_mcc_queues_create(struct be_adapter *adapter)
2865 struct be_queue_info *q, *cq;
2867 cq = &adapter->mcc_obj.cq;
2868 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
2869 sizeof(struct be_mcc_compl)))
2872 /* Use the default EQ for MCC completions */
2873 if (be_cmd_cq_create(adapter, cq, &mcc_eqo(adapter)->q, true, 0))
2876 q = &adapter->mcc_obj.q;
2877 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
2878 goto mcc_cq_destroy;
2880 if (be_cmd_mccq_create(adapter, q, cq))
2886 be_queue_free(adapter, q);
2888 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
2890 be_queue_free(adapter, cq);
2895 static void be_tx_queues_destroy(struct be_adapter *adapter)
2897 struct be_queue_info *q;
2898 struct be_tx_obj *txo;
2901 for_all_tx_queues(adapter, txo, i) {
2904 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
2905 be_queue_free(adapter, q);
2909 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2910 be_queue_free(adapter, q);
2914 static int be_tx_qs_create(struct be_adapter *adapter)
2916 struct be_queue_info *cq;
2917 struct be_tx_obj *txo;
2918 struct be_eq_obj *eqo;
2921 adapter->num_tx_qs = min(adapter->num_evt_qs, adapter->cfg_num_tx_irqs);
2923 for_all_tx_queues(adapter, txo, i) {
2925 status = be_queue_alloc(adapter, cq, TX_CQ_LEN,
2926 sizeof(struct be_eth_tx_compl));
2930 u64_stats_init(&txo->stats.sync);
2931 u64_stats_init(&txo->stats.sync_compl);
2933 /* If num_evt_qs is less than num_tx_qs, then more than
2934 * one txq share an eq
2936 eqo = &adapter->eq_obj[i % adapter->num_evt_qs];
2937 status = be_cmd_cq_create(adapter, cq, &eqo->q, false, 3);
2941 status = be_queue_alloc(adapter, &txo->q, TX_Q_LEN,
2942 sizeof(struct be_eth_wrb));
2946 status = be_cmd_txq_create(adapter, txo);
2950 netif_set_xps_queue(adapter->netdev, eqo->affinity_mask,
2954 dev_info(&adapter->pdev->dev, "created %d TX queue(s)\n",
2955 adapter->num_tx_qs);
2959 static void be_rx_cqs_destroy(struct be_adapter *adapter)
2961 struct be_queue_info *q;
2962 struct be_rx_obj *rxo;
2965 for_all_rx_queues(adapter, rxo, i) {
2968 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2969 be_queue_free(adapter, q);
2973 static int be_rx_cqs_create(struct be_adapter *adapter)
2975 struct be_queue_info *eq, *cq;
2976 struct be_rx_obj *rxo;
2979 adapter->num_rss_qs =
2980 min(adapter->num_evt_qs, adapter->cfg_num_rx_irqs);
2982 /* We'll use RSS only if atleast 2 RSS rings are supported. */
2983 if (adapter->num_rss_qs < 2)
2984 adapter->num_rss_qs = 0;
2986 adapter->num_rx_qs = adapter->num_rss_qs + adapter->need_def_rxq;
2988 /* When the interface is not capable of RSS rings (and there is no
2989 * need to create a default RXQ) we'll still need one RXQ
2991 if (adapter->num_rx_qs == 0)
2992 adapter->num_rx_qs = 1;
2994 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
2995 for_all_rx_queues(adapter, rxo, i) {
2996 rxo->adapter = adapter;
2998 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
2999 sizeof(struct be_eth_rx_compl));
3003 u64_stats_init(&rxo->stats.sync);
3004 eq = &adapter->eq_obj[i % adapter->num_evt_qs].q;
3005 rc = be_cmd_cq_create(adapter, cq, eq, false, 3);
3010 dev_info(&adapter->pdev->dev,
3011 "created %d RX queue(s)\n", adapter->num_rx_qs);
3015 static irqreturn_t be_intx(int irq, void *dev)
3017 struct be_eq_obj *eqo = dev;
3018 struct be_adapter *adapter = eqo->adapter;
3021 /* IRQ is not expected when NAPI is scheduled as the EQ
3022 * will not be armed.
3023 * But, this can happen on Lancer INTx where it takes
3024 * a while to de-assert INTx or in BE2 where occasionaly
3025 * an interrupt may be raised even when EQ is unarmed.
3026 * If NAPI is already scheduled, then counting & notifying
3027 * events will orphan them.
3029 if (napi_schedule_prep(&eqo->napi)) {
3030 num_evts = events_get(eqo);
3031 __napi_schedule(&eqo->napi);
3033 eqo->spurious_intr = 0;
3035 be_eq_notify(adapter, eqo->q.id, false, true, num_evts, 0);
3037 /* Return IRQ_HANDLED only for the the first spurious intr
3038 * after a valid intr to stop the kernel from branding
3039 * this irq as a bad one!
3041 if (num_evts || eqo->spurious_intr++ == 0)
3047 static irqreturn_t be_msix(int irq, void *dev)
3049 struct be_eq_obj *eqo = dev;
3051 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
3052 napi_schedule(&eqo->napi);
3056 static inline bool do_gro(struct be_rx_compl_info *rxcp)
3058 return (rxcp->tcpf && !rxcp->err && rxcp->l4_csum) ? true : false;
3061 static int be_process_rx(struct be_rx_obj *rxo, struct napi_struct *napi,
3062 int budget, int polling)
3064 struct be_adapter *adapter = rxo->adapter;
3065 struct be_queue_info *rx_cq = &rxo->cq;
3066 struct be_rx_compl_info *rxcp;
3068 u32 frags_consumed = 0;
3070 for (work_done = 0; work_done < budget; work_done++) {
3071 rxcp = be_rx_compl_get(rxo);
3075 /* Is it a flush compl that has no data */
3076 if (unlikely(rxcp->num_rcvd == 0))
3079 /* Discard compl with partial DMA Lancer B0 */
3080 if (unlikely(!rxcp->pkt_size)) {
3081 be_rx_compl_discard(rxo, rxcp);
3085 /* On BE drop pkts that arrive due to imperfect filtering in
3086 * promiscuous mode on some skews
3088 if (unlikely(rxcp->port != adapter->port_num &&
3089 !lancer_chip(adapter))) {
3090 be_rx_compl_discard(rxo, rxcp);
3094 /* Don't do gro when we're busy_polling */
3095 if (do_gro(rxcp) && polling != BUSY_POLLING)
3096 be_rx_compl_process_gro(rxo, napi, rxcp);
3098 be_rx_compl_process(rxo, napi, rxcp);
3101 frags_consumed += rxcp->num_rcvd;
3102 be_rx_stats_update(rxo, rxcp);
3106 be_cq_notify(adapter, rx_cq->id, true, work_done);
3108 /* When an rx-obj gets into post_starved state, just
3109 * let be_worker do the posting.
3111 if (atomic_read(&rxo->q.used) < RX_FRAGS_REFILL_WM &&
3112 !rxo->rx_post_starved)
3113 be_post_rx_frags(rxo, GFP_ATOMIC,
3114 max_t(u32, MAX_RX_POST,
3121 static inline void be_update_tx_err(struct be_tx_obj *txo, u8 status)
3124 case BE_TX_COMP_HDR_PARSE_ERR:
3125 tx_stats(txo)->tx_hdr_parse_err++;
3127 case BE_TX_COMP_NDMA_ERR:
3128 tx_stats(txo)->tx_dma_err++;
3130 case BE_TX_COMP_ACL_ERR:
3131 tx_stats(txo)->tx_spoof_check_err++;
3136 static inline void lancer_update_tx_err(struct be_tx_obj *txo, u8 status)
3139 case LANCER_TX_COMP_LSO_ERR:
3140 tx_stats(txo)->tx_tso_err++;
3142 case LANCER_TX_COMP_HSW_DROP_MAC_ERR:
3143 case LANCER_TX_COMP_HSW_DROP_VLAN_ERR:
3144 tx_stats(txo)->tx_spoof_check_err++;
3146 case LANCER_TX_COMP_QINQ_ERR:
3147 tx_stats(txo)->tx_qinq_err++;
3149 case LANCER_TX_COMP_PARITY_ERR:
3150 tx_stats(txo)->tx_internal_parity_err++;
3152 case LANCER_TX_COMP_DMA_ERR:
3153 tx_stats(txo)->tx_dma_err++;
3158 static void be_process_tx(struct be_adapter *adapter, struct be_tx_obj *txo,
3161 int num_wrbs = 0, work_done = 0;
3162 struct be_tx_compl_info *txcp;
3164 while ((txcp = be_tx_compl_get(txo))) {
3165 num_wrbs += be_tx_compl_process(adapter, txo, txcp->end_index);
3169 if (lancer_chip(adapter))
3170 lancer_update_tx_err(txo, txcp->status);
3172 be_update_tx_err(txo, txcp->status);
3177 be_cq_notify(adapter, txo->cq.id, true, work_done);
3178 atomic_sub(num_wrbs, &txo->q.used);
3180 /* As Tx wrbs have been freed up, wake up netdev queue
3181 * if it was stopped due to lack of tx wrbs. */
3182 if (__netif_subqueue_stopped(adapter->netdev, idx) &&
3183 be_can_txq_wake(txo)) {
3184 netif_wake_subqueue(adapter->netdev, idx);
3187 u64_stats_update_begin(&tx_stats(txo)->sync_compl);
3188 tx_stats(txo)->tx_compl += work_done;
3189 u64_stats_update_end(&tx_stats(txo)->sync_compl);
3193 #ifdef CONFIG_NET_RX_BUSY_POLL
3194 static inline bool be_lock_napi(struct be_eq_obj *eqo)
3198 spin_lock(&eqo->lock); /* BH is already disabled */
3199 if (eqo->state & BE_EQ_LOCKED) {
3200 WARN_ON(eqo->state & BE_EQ_NAPI);
3201 eqo->state |= BE_EQ_NAPI_YIELD;
3204 eqo->state = BE_EQ_NAPI;
3206 spin_unlock(&eqo->lock);
3210 static inline void be_unlock_napi(struct be_eq_obj *eqo)
3212 spin_lock(&eqo->lock); /* BH is already disabled */
3214 WARN_ON(eqo->state & (BE_EQ_POLL | BE_EQ_NAPI_YIELD));
3215 eqo->state = BE_EQ_IDLE;
3217 spin_unlock(&eqo->lock);
3220 static inline bool be_lock_busy_poll(struct be_eq_obj *eqo)
3224 spin_lock_bh(&eqo->lock);
3225 if (eqo->state & BE_EQ_LOCKED) {
3226 eqo->state |= BE_EQ_POLL_YIELD;
3229 eqo->state |= BE_EQ_POLL;
3231 spin_unlock_bh(&eqo->lock);
3235 static inline void be_unlock_busy_poll(struct be_eq_obj *eqo)
3237 spin_lock_bh(&eqo->lock);
3239 WARN_ON(eqo->state & (BE_EQ_NAPI));
3240 eqo->state = BE_EQ_IDLE;
3242 spin_unlock_bh(&eqo->lock);
3245 static inline void be_enable_busy_poll(struct be_eq_obj *eqo)
3247 spin_lock_init(&eqo->lock);
3248 eqo->state = BE_EQ_IDLE;
3251 static inline void be_disable_busy_poll(struct be_eq_obj *eqo)
3255 /* It's enough to just acquire napi lock on the eqo to stop
3256 * be_busy_poll() from processing any queueus.
3258 while (!be_lock_napi(eqo))
3264 #else /* CONFIG_NET_RX_BUSY_POLL */
3266 static inline bool be_lock_napi(struct be_eq_obj *eqo)
3271 static inline void be_unlock_napi(struct be_eq_obj *eqo)
3275 static inline bool be_lock_busy_poll(struct be_eq_obj *eqo)
3280 static inline void be_unlock_busy_poll(struct be_eq_obj *eqo)
3284 static inline void be_enable_busy_poll(struct be_eq_obj *eqo)
3288 static inline void be_disable_busy_poll(struct be_eq_obj *eqo)
3291 #endif /* CONFIG_NET_RX_BUSY_POLL */
3293 int be_poll(struct napi_struct *napi, int budget)
3295 struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi);
3296 struct be_adapter *adapter = eqo->adapter;
3297 int max_work = 0, work, i, num_evts;
3298 struct be_rx_obj *rxo;
3299 struct be_tx_obj *txo;
3302 num_evts = events_get(eqo);
3304 for_all_tx_queues_on_eq(adapter, eqo, txo, i)
3305 be_process_tx(adapter, txo, i);
3307 if (be_lock_napi(eqo)) {
3308 /* This loop will iterate twice for EQ0 in which
3309 * completions of the last RXQ (default one) are also processed
3310 * For other EQs the loop iterates only once
3312 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
3313 work = be_process_rx(rxo, napi, budget, NAPI_POLLING);
3314 max_work = max(work, max_work);
3316 be_unlock_napi(eqo);
3321 if (is_mcc_eqo(eqo))
3322 be_process_mcc(adapter);
3324 if (max_work < budget) {
3325 napi_complete(napi);
3327 /* Skyhawk EQ_DB has a provision to set the rearm to interrupt
3328 * delay via a delay multiplier encoding value
3330 if (skyhawk_chip(adapter))
3331 mult_enc = be_get_eq_delay_mult_enc(eqo);
3333 be_eq_notify(adapter, eqo->q.id, true, false, num_evts,
3336 /* As we'll continue in polling mode, count and clear events */
3337 be_eq_notify(adapter, eqo->q.id, false, false, num_evts, 0);
3342 #ifdef CONFIG_NET_RX_BUSY_POLL
3343 static int be_busy_poll(struct napi_struct *napi)
3345 struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi);
3346 struct be_adapter *adapter = eqo->adapter;
3347 struct be_rx_obj *rxo;
3350 if (!be_lock_busy_poll(eqo))
3351 return LL_FLUSH_BUSY;
3353 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
3354 work = be_process_rx(rxo, napi, 4, BUSY_POLLING);
3359 be_unlock_busy_poll(eqo);
3364 void be_detect_error(struct be_adapter *adapter)
3366 u32 ue_lo = 0, ue_hi = 0, ue_lo_mask = 0, ue_hi_mask = 0;
3367 u32 sliport_status = 0, sliport_err1 = 0, sliport_err2 = 0;
3369 struct device *dev = &adapter->pdev->dev;
3371 if (be_check_error(adapter, BE_ERROR_HW))
3374 if (lancer_chip(adapter)) {
3375 sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET);
3376 if (sliport_status & SLIPORT_STATUS_ERR_MASK) {
3377 be_set_error(adapter, BE_ERROR_UE);
3378 sliport_err1 = ioread32(adapter->db +
3379 SLIPORT_ERROR1_OFFSET);
3380 sliport_err2 = ioread32(adapter->db +
3381 SLIPORT_ERROR2_OFFSET);
3382 /* Do not log error messages if its a FW reset */
3383 if (sliport_err1 == SLIPORT_ERROR_FW_RESET1 &&
3384 sliport_err2 == SLIPORT_ERROR_FW_RESET2) {
3385 dev_info(dev, "Firmware update in progress\n");
3387 dev_err(dev, "Error detected in the card\n");
3388 dev_err(dev, "ERR: sliport status 0x%x\n",
3390 dev_err(dev, "ERR: sliport error1 0x%x\n",
3392 dev_err(dev, "ERR: sliport error2 0x%x\n",
3397 ue_lo = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_LOW);
3398 ue_hi = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_HIGH);
3399 ue_lo_mask = ioread32(adapter->pcicfg +
3400 PCICFG_UE_STATUS_LOW_MASK);
3401 ue_hi_mask = ioread32(adapter->pcicfg +
3402 PCICFG_UE_STATUS_HI_MASK);
3404 ue_lo = (ue_lo & ~ue_lo_mask);
3405 ue_hi = (ue_hi & ~ue_hi_mask);
3407 /* On certain platforms BE hardware can indicate spurious UEs.
3408 * Allow HW to stop working completely in case of a real UE.
3409 * Hence not setting the hw_error for UE detection.
3412 if (ue_lo || ue_hi) {
3413 dev_err(dev, "Error detected in the adapter");
3414 if (skyhawk_chip(adapter))
3415 be_set_error(adapter, BE_ERROR_UE);
3417 for (i = 0; ue_lo; ue_lo >>= 1, i++) {
3419 dev_err(dev, "UE: %s bit set\n",
3420 ue_status_low_desc[i]);
3422 for (i = 0; ue_hi; ue_hi >>= 1, i++) {
3424 dev_err(dev, "UE: %s bit set\n",
3425 ue_status_hi_desc[i]);
3431 static void be_msix_disable(struct be_adapter *adapter)
3433 if (msix_enabled(adapter)) {
3434 pci_disable_msix(adapter->pdev);
3435 adapter->num_msix_vec = 0;
3436 adapter->num_msix_roce_vec = 0;
3440 static int be_msix_enable(struct be_adapter *adapter)
3442 unsigned int i, max_roce_eqs;
3443 struct device *dev = &adapter->pdev->dev;
3446 /* If RoCE is supported, program the max number of vectors that
3447 * could be used for NIC and RoCE, else, just program the number
3448 * we'll use initially.
3450 if (be_roce_supported(adapter)) {
3452 be_max_func_eqs(adapter) - be_max_nic_eqs(adapter);
3453 max_roce_eqs = min(max_roce_eqs, num_online_cpus());
3454 num_vec = be_max_any_irqs(adapter) + max_roce_eqs;
3456 num_vec = max(adapter->cfg_num_rx_irqs,
3457 adapter->cfg_num_tx_irqs);
3460 for (i = 0; i < num_vec; i++)
3461 adapter->msix_entries[i].entry = i;
3463 num_vec = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
3464 MIN_MSIX_VECTORS, num_vec);
3468 if (be_roce_supported(adapter) && num_vec > MIN_MSIX_VECTORS) {
3469 adapter->num_msix_roce_vec = num_vec / 2;
3470 dev_info(dev, "enabled %d MSI-x vector(s) for RoCE\n",
3471 adapter->num_msix_roce_vec);
3474 adapter->num_msix_vec = num_vec - adapter->num_msix_roce_vec;
3476 dev_info(dev, "enabled %d MSI-x vector(s) for NIC\n",
3477 adapter->num_msix_vec);
3481 dev_warn(dev, "MSIx enable failed\n");
3483 /* INTx is not supported in VFs, so fail probe if enable_msix fails */
3484 if (be_virtfn(adapter))
3489 static inline int be_msix_vec_get(struct be_adapter *adapter,
3490 struct be_eq_obj *eqo)
3492 return adapter->msix_entries[eqo->msix_idx].vector;
3495 static int be_msix_register(struct be_adapter *adapter)
3497 struct net_device *netdev = adapter->netdev;
3498 struct be_eq_obj *eqo;
3501 for_all_evt_queues(adapter, eqo, i) {
3502 sprintf(eqo->desc, "%s-q%d", netdev->name, i);
3503 vec = be_msix_vec_get(adapter, eqo);
3504 status = request_irq(vec, be_msix, 0, eqo->desc, eqo);
3508 irq_set_affinity_hint(vec, eqo->affinity_mask);
3513 for (i--; i >= 0; i--) {
3514 eqo = &adapter->eq_obj[i];
3515 free_irq(be_msix_vec_get(adapter, eqo), eqo);
3517 dev_warn(&adapter->pdev->dev, "MSIX Request IRQ failed - err %d\n",
3519 be_msix_disable(adapter);
3523 static int be_irq_register(struct be_adapter *adapter)
3525 struct net_device *netdev = adapter->netdev;
3528 if (msix_enabled(adapter)) {
3529 status = be_msix_register(adapter);
3532 /* INTx is not supported for VF */
3533 if (be_virtfn(adapter))
3537 /* INTx: only the first EQ is used */
3538 netdev->irq = adapter->pdev->irq;
3539 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
3540 &adapter->eq_obj[0]);
3542 dev_err(&adapter->pdev->dev,
3543 "INTx request IRQ failed - err %d\n", status);
3547 adapter->isr_registered = true;
3551 static void be_irq_unregister(struct be_adapter *adapter)
3553 struct net_device *netdev = adapter->netdev;
3554 struct be_eq_obj *eqo;
3557 if (!adapter->isr_registered)
3561 if (!msix_enabled(adapter)) {
3562 free_irq(netdev->irq, &adapter->eq_obj[0]);
3567 for_all_evt_queues(adapter, eqo, i) {
3568 vec = be_msix_vec_get(adapter, eqo);
3569 irq_set_affinity_hint(vec, NULL);
3574 adapter->isr_registered = false;
3577 static void be_rx_qs_destroy(struct be_adapter *adapter)
3579 struct rss_info *rss = &adapter->rss_info;
3580 struct be_queue_info *q;
3581 struct be_rx_obj *rxo;
3584 for_all_rx_queues(adapter, rxo, i) {
3587 /* If RXQs are destroyed while in an "out of buffer"
3588 * state, there is a possibility of an HW stall on
3589 * Lancer. So, post 64 buffers to each queue to relieve
3590 * the "out of buffer" condition.
3591 * Make sure there's space in the RXQ before posting.
3593 if (lancer_chip(adapter)) {
3594 be_rx_cq_clean(rxo);
3595 if (atomic_read(&q->used) == 0)
3596 be_post_rx_frags(rxo, GFP_KERNEL,
3600 be_cmd_rxq_destroy(adapter, q);
3601 be_rx_cq_clean(rxo);
3604 be_queue_free(adapter, q);
3607 if (rss->rss_flags) {
3608 rss->rss_flags = RSS_ENABLE_NONE;
3609 be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3610 128, rss->rss_hkey);
3614 static void be_disable_if_filters(struct be_adapter *adapter)
3616 be_dev_mac_del(adapter, adapter->pmac_id[0]);
3617 be_clear_uc_list(adapter);
3618 be_clear_mc_list(adapter);
3620 /* The IFACE flags are enabled in the open path and cleared
3621 * in the close path. When a VF gets detached from the host and
3622 * assigned to a VM the following happens:
3623 * - VF's IFACE flags get cleared in the detach path
3624 * - IFACE create is issued by the VF in the attach path
3625 * Due to a bug in the BE3/Skyhawk-R FW
3626 * (Lancer FW doesn't have the bug), the IFACE capability flags
3627 * specified along with the IFACE create cmd issued by a VF are not
3628 * honoured by FW. As a consequence, if a *new* driver
3629 * (that enables/disables IFACE flags in open/close)
3630 * is loaded in the host and an *old* driver is * used by a VM/VF,
3631 * the IFACE gets created *without* the needed flags.
3632 * To avoid this, disable RX-filter flags only for Lancer.
3634 if (lancer_chip(adapter)) {
3635 be_cmd_rx_filter(adapter, BE_IF_ALL_FILT_FLAGS, OFF);
3636 adapter->if_flags &= ~BE_IF_ALL_FILT_FLAGS;
3640 static int be_close(struct net_device *netdev)
3642 struct be_adapter *adapter = netdev_priv(netdev);
3643 struct be_eq_obj *eqo;
3646 /* This protection is needed as be_close() may be called even when the
3647 * adapter is in cleared state (after eeh perm failure)
3649 if (!(adapter->flags & BE_FLAGS_SETUP_DONE))
3652 /* Before attempting cleanup ensure all the pending cmds in the
3653 * config_wq have finished execution
3655 flush_workqueue(be_wq);
3657 be_disable_if_filters(adapter);
3659 if (adapter->flags & BE_FLAGS_NAPI_ENABLED) {
3660 for_all_evt_queues(adapter, eqo, i) {
3661 napi_disable(&eqo->napi);
3662 be_disable_busy_poll(eqo);
3664 adapter->flags &= ~BE_FLAGS_NAPI_ENABLED;
3667 be_async_mcc_disable(adapter);
3669 /* Wait for all pending tx completions to arrive so that
3670 * all tx skbs are freed.
3672 netif_tx_disable(netdev);
3673 be_tx_compl_clean(adapter);
3675 be_rx_qs_destroy(adapter);
3677 for_all_evt_queues(adapter, eqo, i) {
3678 if (msix_enabled(adapter))
3679 synchronize_irq(be_msix_vec_get(adapter, eqo));
3681 synchronize_irq(netdev->irq);
3685 be_irq_unregister(adapter);
3690 static int be_rx_qs_create(struct be_adapter *adapter)
3692 struct rss_info *rss = &adapter->rss_info;
3693 u8 rss_key[RSS_HASH_KEY_LEN];
3694 struct be_rx_obj *rxo;
3697 for_all_rx_queues(adapter, rxo, i) {
3698 rc = be_queue_alloc(adapter, &rxo->q, RX_Q_LEN,
3699 sizeof(struct be_eth_rx_d));
3704 if (adapter->need_def_rxq || !adapter->num_rss_qs) {
3705 rxo = default_rxo(adapter);
3706 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3707 rx_frag_size, adapter->if_handle,
3708 false, &rxo->rss_id);
3713 for_all_rss_queues(adapter, rxo, i) {
3714 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3715 rx_frag_size, adapter->if_handle,
3716 true, &rxo->rss_id);
3721 if (be_multi_rxq(adapter)) {
3722 for (j = 0; j < RSS_INDIR_TABLE_LEN; j += adapter->num_rss_qs) {
3723 for_all_rss_queues(adapter, rxo, i) {
3724 if ((j + i) >= RSS_INDIR_TABLE_LEN)
3726 rss->rsstable[j + i] = rxo->rss_id;
3727 rss->rss_queue[j + i] = i;
3730 rss->rss_flags = RSS_ENABLE_TCP_IPV4 | RSS_ENABLE_IPV4 |
3731 RSS_ENABLE_TCP_IPV6 | RSS_ENABLE_IPV6;
3733 if (!BEx_chip(adapter))
3734 rss->rss_flags |= RSS_ENABLE_UDP_IPV4 |
3735 RSS_ENABLE_UDP_IPV6;
3737 netdev_rss_key_fill(rss_key, RSS_HASH_KEY_LEN);
3738 rc = be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3739 RSS_INDIR_TABLE_LEN, rss_key);
3741 rss->rss_flags = RSS_ENABLE_NONE;
3745 memcpy(rss->rss_hkey, rss_key, RSS_HASH_KEY_LEN);
3747 /* Disable RSS, if only default RX Q is created */
3748 rss->rss_flags = RSS_ENABLE_NONE;
3752 /* Post 1 less than RXQ-len to avoid head being equal to tail,
3753 * which is a queue empty condition
3755 for_all_rx_queues(adapter, rxo, i)
3756 be_post_rx_frags(rxo, GFP_KERNEL, RX_Q_LEN - 1);
3761 static int be_enable_if_filters(struct be_adapter *adapter)
3765 status = be_cmd_rx_filter(adapter, BE_IF_FILT_FLAGS_BASIC, ON);
3769 /* For BE3 VFs, the PF programs the initial MAC address */
3770 if (!(BEx_chip(adapter) && be_virtfn(adapter))) {
3771 status = be_dev_mac_add(adapter, adapter->netdev->dev_addr);
3774 ether_addr_copy(adapter->dev_mac, adapter->netdev->dev_addr);
3777 if (adapter->vlans_added)
3778 be_vid_config(adapter);
3780 __be_set_rx_mode(adapter);
3785 static int be_open(struct net_device *netdev)
3787 struct be_adapter *adapter = netdev_priv(netdev);
3788 struct be_eq_obj *eqo;
3789 struct be_rx_obj *rxo;
3790 struct be_tx_obj *txo;
3794 status = be_rx_qs_create(adapter);
3798 status = be_enable_if_filters(adapter);
3802 status = be_irq_register(adapter);
3806 for_all_rx_queues(adapter, rxo, i)
3807 be_cq_notify(adapter, rxo->cq.id, true, 0);
3809 for_all_tx_queues(adapter, txo, i)
3810 be_cq_notify(adapter, txo->cq.id, true, 0);
3812 be_async_mcc_enable(adapter);
3814 for_all_evt_queues(adapter, eqo, i) {
3815 napi_enable(&eqo->napi);
3816 be_enable_busy_poll(eqo);
3817 be_eq_notify(adapter, eqo->q.id, true, true, 0, 0);
3819 adapter->flags |= BE_FLAGS_NAPI_ENABLED;
3821 status = be_cmd_link_status_query(adapter, NULL, &link_status, 0);
3823 be_link_status_update(adapter, link_status);
3825 netif_tx_start_all_queues(netdev);
3826 if (skyhawk_chip(adapter))
3827 udp_tunnel_get_rx_info(netdev);
3831 be_close(adapter->netdev);
3835 static void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
3839 addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);
3841 mac[5] = (u8)(addr & 0xFF);
3842 mac[4] = (u8)((addr >> 8) & 0xFF);
3843 mac[3] = (u8)((addr >> 16) & 0xFF);
3844 /* Use the OUI from the current MAC address */
3845 memcpy(mac, adapter->netdev->dev_addr, 3);
3849 * Generate a seed MAC address from the PF MAC Address using jhash.
3850 * MAC Address for VFs are assigned incrementally starting from the seed.
3851 * These addresses are programmed in the ASIC by the PF and the VF driver
3852 * queries for the MAC address during its probe.
3854 static int be_vf_eth_addr_config(struct be_adapter *adapter)
3859 struct be_vf_cfg *vf_cfg;
3861 be_vf_eth_addr_generate(adapter, mac);
3863 for_all_vfs(adapter, vf_cfg, vf) {
3864 if (BEx_chip(adapter))
3865 status = be_cmd_pmac_add(adapter, mac,
3867 &vf_cfg->pmac_id, vf + 1);
3869 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
3873 dev_err(&adapter->pdev->dev,
3874 "Mac address assignment failed for VF %d\n",
3877 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3884 static int be_vfs_mac_query(struct be_adapter *adapter)
3888 struct be_vf_cfg *vf_cfg;
3890 for_all_vfs(adapter, vf_cfg, vf) {
3891 status = be_cmd_get_active_mac(adapter, vf_cfg->pmac_id,
3892 mac, vf_cfg->if_handle,
3896 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3901 static void be_vf_clear(struct be_adapter *adapter)
3903 struct be_vf_cfg *vf_cfg;
3906 if (pci_vfs_assigned(adapter->pdev)) {
3907 dev_warn(&adapter->pdev->dev,
3908 "VFs are assigned to VMs: not disabling VFs\n");
3912 pci_disable_sriov(adapter->pdev);
3914 for_all_vfs(adapter, vf_cfg, vf) {
3915 if (BEx_chip(adapter))
3916 be_cmd_pmac_del(adapter, vf_cfg->if_handle,
3917 vf_cfg->pmac_id, vf + 1);
3919 be_cmd_set_mac(adapter, NULL, vf_cfg->if_handle,
3922 be_cmd_if_destroy(adapter, vf_cfg->if_handle, vf + 1);
3925 if (BE3_chip(adapter))
3926 be_cmd_set_hsw_config(adapter, 0, 0,
3928 PORT_FWD_TYPE_PASSTHRU, 0);
3930 kfree(adapter->vf_cfg);
3931 adapter->num_vfs = 0;
3932 adapter->flags &= ~BE_FLAGS_SRIOV_ENABLED;
3935 static void be_clear_queues(struct be_adapter *adapter)
3937 be_mcc_queues_destroy(adapter);
3938 be_rx_cqs_destroy(adapter);
3939 be_tx_queues_destroy(adapter);
3940 be_evt_queues_destroy(adapter);
3943 static void be_cancel_worker(struct be_adapter *adapter)
3945 if (adapter->flags & BE_FLAGS_WORKER_SCHEDULED) {
3946 cancel_delayed_work_sync(&adapter->work);
3947 adapter->flags &= ~BE_FLAGS_WORKER_SCHEDULED;
3951 static void be_cancel_err_detection(struct be_adapter *adapter)
3953 struct be_error_recovery *err_rec = &adapter->error_recovery;
3955 if (!be_err_recovery_workq)
3958 if (adapter->flags & BE_FLAGS_ERR_DETECTION_SCHEDULED) {
3959 cancel_delayed_work_sync(&err_rec->err_detection_work);
3960 adapter->flags &= ~BE_FLAGS_ERR_DETECTION_SCHEDULED;
3964 static void be_disable_vxlan_offloads(struct be_adapter *adapter)
3966 struct net_device *netdev = adapter->netdev;
3968 if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS)
3969 be_cmd_manage_iface(adapter, adapter->if_handle,
3970 OP_CONVERT_TUNNEL_TO_NORMAL);
3972 if (adapter->vxlan_port)
3973 be_cmd_set_vxlan_port(adapter, 0);
3975 adapter->flags &= ~BE_FLAGS_VXLAN_OFFLOADS;
3976 adapter->vxlan_port = 0;
3978 netdev->hw_enc_features = 0;
3979 netdev->hw_features &= ~(NETIF_F_GSO_UDP_TUNNEL);
3980 netdev->features &= ~(NETIF_F_GSO_UDP_TUNNEL);
3983 static void be_calculate_vf_res(struct be_adapter *adapter, u16 num_vfs,
3984 struct be_resources *vft_res)
3986 struct be_resources res = adapter->pool_res;
3987 u32 vf_if_cap_flags = res.vf_if_cap_flags;
3988 struct be_resources res_mod = {0};
3991 /* Distribute the queue resources among the PF and it's VFs */
3993 /* Divide the rx queues evenly among the VFs and the PF, capped
3994 * at VF-EQ-count. Any remainder queues belong to the PF.
3996 num_vf_qs = min(SH_VF_MAX_NIC_EQS,
3997 res.max_rss_qs / (num_vfs + 1));
3999 /* Skyhawk-R chip supports only MAX_PORT_RSS_TABLES
4000 * RSS Tables per port. Provide RSS on VFs, only if number of
4001 * VFs requested is less than it's PF Pool's RSS Tables limit.
4003 if (num_vfs >= be_max_pf_pool_rss_tables(adapter))
4007 /* Resource with fields set to all '1's by GET_PROFILE_CONFIG cmd,
4008 * which are modifiable using SET_PROFILE_CONFIG cmd.
4010 be_cmd_get_profile_config(adapter, &res_mod, NULL, ACTIVE_PROFILE_TYPE,
4011 RESOURCE_MODIFIABLE, 0);
4013 /* If RSS IFACE capability flags are modifiable for a VF, set the
4014 * capability flag as valid and set RSS and DEFQ_RSS IFACE flags if
4015 * more than 1 RSSQ is available for a VF.
4016 * Otherwise, provision only 1 queue pair for VF.
4018 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_RSS) {
4019 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
4020 if (num_vf_qs > 1) {
4021 vf_if_cap_flags |= BE_IF_FLAGS_RSS;
4022 if (res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS)
4023 vf_if_cap_flags |= BE_IF_FLAGS_DEFQ_RSS;
4025 vf_if_cap_flags &= ~(BE_IF_FLAGS_RSS |
4026 BE_IF_FLAGS_DEFQ_RSS);
4032 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
4033 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
4034 vf_if_cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
4037 vft_res->vf_if_cap_flags = vf_if_cap_flags;
4038 vft_res->max_rx_qs = num_vf_qs;
4039 vft_res->max_rss_qs = num_vf_qs;
4040 vft_res->max_tx_qs = res.max_tx_qs / (num_vfs + 1);
4041 vft_res->max_cq_count = res.max_cq_count / (num_vfs + 1);
4043 /* Distribute unicast MACs, VLANs, IFACE count and MCCQ count equally
4044 * among the PF and it's VFs, if the fields are changeable
4046 if (res_mod.max_uc_mac == FIELD_MODIFIABLE)
4047 vft_res->max_uc_mac = res.max_uc_mac / (num_vfs + 1);
4049 if (res_mod.max_vlans == FIELD_MODIFIABLE)
4050 vft_res->max_vlans = res.max_vlans / (num_vfs + 1);
4052 if (res_mod.max_iface_count == FIELD_MODIFIABLE)
4053 vft_res->max_iface_count = res.max_iface_count / (num_vfs + 1);
4055 if (res_mod.max_mcc_count == FIELD_MODIFIABLE)
4056 vft_res->max_mcc_count = res.max_mcc_count / (num_vfs + 1);
4059 static void be_if_destroy(struct be_adapter *adapter)
4061 be_cmd_if_destroy(adapter, adapter->if_handle, 0);
4063 kfree(adapter->pmac_id);
4064 adapter->pmac_id = NULL;
4066 kfree(adapter->mc_list);
4067 adapter->mc_list = NULL;
4069 kfree(adapter->uc_list);
4070 adapter->uc_list = NULL;
4073 static int be_clear(struct be_adapter *adapter)
4075 struct pci_dev *pdev = adapter->pdev;
4076 struct be_resources vft_res = {0};
4078 be_cancel_worker(adapter);
4080 flush_workqueue(be_wq);
4082 if (sriov_enabled(adapter))
4083 be_vf_clear(adapter);
4085 /* Re-configure FW to distribute resources evenly across max-supported
4086 * number of VFs, only when VFs are not already enabled.
4088 if (skyhawk_chip(adapter) && be_physfn(adapter) &&
4089 !pci_vfs_assigned(pdev)) {
4090 be_calculate_vf_res(adapter,
4091 pci_sriov_get_totalvfs(pdev),
4093 be_cmd_set_sriov_config(adapter, adapter->pool_res,
4094 pci_sriov_get_totalvfs(pdev),
4098 be_disable_vxlan_offloads(adapter);
4100 be_if_destroy(adapter);
4102 be_clear_queues(adapter);
4104 be_msix_disable(adapter);
4105 adapter->flags &= ~BE_FLAGS_SETUP_DONE;
4109 static int be_vfs_if_create(struct be_adapter *adapter)
4111 struct be_resources res = {0};
4112 u32 cap_flags, en_flags, vf;
4113 struct be_vf_cfg *vf_cfg;
4116 /* If a FW profile exists, then cap_flags are updated */
4117 cap_flags = BE_VF_IF_EN_FLAGS;
4119 for_all_vfs(adapter, vf_cfg, vf) {
4120 if (!BE3_chip(adapter)) {
4121 status = be_cmd_get_profile_config(adapter, &res, NULL,
4122 ACTIVE_PROFILE_TYPE,
4126 cap_flags = res.if_cap_flags;
4127 /* Prevent VFs from enabling VLAN promiscuous
4130 cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
4134 /* PF should enable IF flags during proxy if_create call */
4135 en_flags = cap_flags & BE_VF_IF_EN_FLAGS;
4136 status = be_cmd_if_create(adapter, cap_flags, en_flags,
4137 &vf_cfg->if_handle, vf + 1);
4145 static int be_vf_setup_init(struct be_adapter *adapter)
4147 struct be_vf_cfg *vf_cfg;
4150 adapter->vf_cfg = kcalloc(adapter->num_vfs, sizeof(*vf_cfg),
4152 if (!adapter->vf_cfg)
4155 for_all_vfs(adapter, vf_cfg, vf) {
4156 vf_cfg->if_handle = -1;
4157 vf_cfg->pmac_id = -1;
4162 static int be_vf_setup(struct be_adapter *adapter)
4164 struct device *dev = &adapter->pdev->dev;
4165 struct be_vf_cfg *vf_cfg;
4166 int status, old_vfs, vf;
4169 old_vfs = pci_num_vf(adapter->pdev);
4171 status = be_vf_setup_init(adapter);
4176 for_all_vfs(adapter, vf_cfg, vf) {
4177 status = be_cmd_get_if_id(adapter, vf_cfg, vf);
4182 status = be_vfs_mac_query(adapter);
4186 status = be_vfs_if_create(adapter);
4190 status = be_vf_eth_addr_config(adapter);
4195 for_all_vfs(adapter, vf_cfg, vf) {
4196 /* Allow VFs to programs MAC/VLAN filters */
4197 status = be_cmd_get_fn_privileges(adapter, &vf_cfg->privileges,
4199 if (!status && !(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
4200 status = be_cmd_set_fn_privileges(adapter,
4201 vf_cfg->privileges |
4205 vf_cfg->privileges |= BE_PRIV_FILTMGMT;
4206 dev_info(dev, "VF%d has FILTMGMT privilege\n",
4211 /* Allow full available bandwidth */
4213 be_cmd_config_qos(adapter, 0, 0, vf + 1);
4215 status = be_cmd_get_hsw_config(adapter, NULL, vf + 1,
4216 vf_cfg->if_handle, NULL,
4219 vf_cfg->spoofchk = spoofchk;
4222 be_cmd_enable_vf(adapter, vf + 1);
4223 be_cmd_set_logical_link_config(adapter,
4224 IFLA_VF_LINK_STATE_AUTO,
4230 status = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
4232 dev_err(dev, "SRIOV enable failed\n");
4233 adapter->num_vfs = 0;
4238 if (BE3_chip(adapter)) {
4239 /* On BE3, enable VEB only when SRIOV is enabled */
4240 status = be_cmd_set_hsw_config(adapter, 0, 0,
4242 PORT_FWD_TYPE_VEB, 0);
4247 adapter->flags |= BE_FLAGS_SRIOV_ENABLED;
4250 dev_err(dev, "VF setup failed\n");
4251 be_vf_clear(adapter);
4255 /* Converting function_mode bits on BE3 to SH mc_type enums */
4257 static u8 be_convert_mc_type(u32 function_mode)
4259 if (function_mode & VNIC_MODE && function_mode & QNQ_MODE)
4261 else if (function_mode & QNQ_MODE)
4263 else if (function_mode & VNIC_MODE)
4265 else if (function_mode & UMC_ENABLED)
4271 /* On BE2/BE3 FW does not suggest the supported limits */
4272 static void BEx_get_resources(struct be_adapter *adapter,
4273 struct be_resources *res)
4275 bool use_sriov = adapter->num_vfs ? 1 : 0;
4277 if (be_physfn(adapter))
4278 res->max_uc_mac = BE_UC_PMAC_COUNT;
4280 res->max_uc_mac = BE_VF_UC_PMAC_COUNT;
4282 adapter->mc_type = be_convert_mc_type(adapter->function_mode);
4284 if (be_is_mc(adapter)) {
4285 /* Assuming that there are 4 channels per port,
4286 * when multi-channel is enabled
4288 if (be_is_qnq_mode(adapter))
4289 res->max_vlans = BE_NUM_VLANS_SUPPORTED/8;
4291 /* In a non-qnq multichannel mode, the pvid
4292 * takes up one vlan entry
4294 res->max_vlans = (BE_NUM_VLANS_SUPPORTED / 4) - 1;
4296 res->max_vlans = BE_NUM_VLANS_SUPPORTED;
4299 res->max_mcast_mac = BE_MAX_MC;
4301 /* 1) For BE3 1Gb ports, FW does not support multiple TXQs
4302 * 2) Create multiple TX rings on a BE3-R multi-channel interface
4303 * *only* if it is RSS-capable.
4305 if (BE2_chip(adapter) || use_sriov || (adapter->port_num > 1) ||
4306 be_virtfn(adapter) ||
4307 (be_is_mc(adapter) &&
4308 !(adapter->function_caps & BE_FUNCTION_CAPS_RSS))) {
4310 } else if (adapter->function_caps & BE_FUNCTION_CAPS_SUPER_NIC) {
4311 struct be_resources super_nic_res = {0};
4313 /* On a SuperNIC profile, the driver needs to use the
4314 * GET_PROFILE_CONFIG cmd to query the per-function TXQ limits
4316 be_cmd_get_profile_config(adapter, &super_nic_res, NULL,
4317 ACTIVE_PROFILE_TYPE, RESOURCE_LIMITS,
4319 /* Some old versions of BE3 FW don't report max_tx_qs value */
4320 res->max_tx_qs = super_nic_res.max_tx_qs ? : BE3_MAX_TX_QS;
4322 res->max_tx_qs = BE3_MAX_TX_QS;
4325 if ((adapter->function_caps & BE_FUNCTION_CAPS_RSS) &&
4326 !use_sriov && be_physfn(adapter))
4327 res->max_rss_qs = (adapter->be3_native) ?
4328 BE3_MAX_RSS_QS : BE2_MAX_RSS_QS;
4329 res->max_rx_qs = res->max_rss_qs + 1;
4331 if (be_physfn(adapter))
4332 res->max_evt_qs = (be_max_vfs(adapter) > 0) ?
4333 BE3_SRIOV_MAX_EVT_QS : BE3_MAX_EVT_QS;
4335 res->max_evt_qs = 1;
4337 res->if_cap_flags = BE_IF_CAP_FLAGS_WANT;
4338 res->if_cap_flags &= ~BE_IF_FLAGS_DEFQ_RSS;
4339 if (!(adapter->function_caps & BE_FUNCTION_CAPS_RSS))
4340 res->if_cap_flags &= ~BE_IF_FLAGS_RSS;
4343 static void be_setup_init(struct be_adapter *adapter)
4345 adapter->vlan_prio_bmap = 0xff;
4346 adapter->phy.link_speed = -1;
4347 adapter->if_handle = -1;
4348 adapter->be3_native = false;
4349 adapter->if_flags = 0;
4350 adapter->phy_state = BE_UNKNOWN_PHY_STATE;
4351 if (be_physfn(adapter))
4352 adapter->cmd_privileges = MAX_PRIVILEGES;
4354 adapter->cmd_privileges = MIN_PRIVILEGES;
4357 /* HW supports only MAX_PORT_RSS_TABLES RSS Policy Tables per port.
4358 * However, this HW limitation is not exposed to the host via any SLI cmd.
4359 * As a result, in the case of SRIOV and in particular multi-partition configs
4360 * the driver needs to calcuate a proportional share of RSS Tables per PF-pool
4361 * for distribution between the VFs. This self-imposed limit will determine the
4362 * no: of VFs for which RSS can be enabled.
4364 static void be_calculate_pf_pool_rss_tables(struct be_adapter *adapter)
4366 struct be_port_resources port_res = {0};
4367 u8 rss_tables_on_port;
4368 u16 max_vfs = be_max_vfs(adapter);
4370 be_cmd_get_profile_config(adapter, NULL, &port_res, SAVED_PROFILE_TYPE,
4371 RESOURCE_LIMITS, 0);
4373 rss_tables_on_port = MAX_PORT_RSS_TABLES - port_res.nic_pfs;
4375 /* Each PF Pool's RSS Tables limit =
4376 * PF's Max VFs / Total_Max_VFs on Port * RSS Tables on Port
4378 adapter->pool_res.max_rss_tables =
4379 max_vfs * rss_tables_on_port / port_res.max_vfs;
4382 static int be_get_sriov_config(struct be_adapter *adapter)
4384 struct be_resources res = {0};
4385 int max_vfs, old_vfs;
4387 be_cmd_get_profile_config(adapter, &res, NULL, ACTIVE_PROFILE_TYPE,
4388 RESOURCE_LIMITS, 0);
4390 /* Some old versions of BE3 FW don't report max_vfs value */
4391 if (BE3_chip(adapter) && !res.max_vfs) {
4392 max_vfs = pci_sriov_get_totalvfs(adapter->pdev);
4393 res.max_vfs = max_vfs > 0 ? min(MAX_VFS, max_vfs) : 0;
4396 adapter->pool_res = res;
4398 /* If during previous unload of the driver, the VFs were not disabled,
4399 * then we cannot rely on the PF POOL limits for the TotalVFs value.
4400 * Instead use the TotalVFs value stored in the pci-dev struct.
4402 old_vfs = pci_num_vf(adapter->pdev);
4404 dev_info(&adapter->pdev->dev, "%d VFs are already enabled\n",
4407 adapter->pool_res.max_vfs =
4408 pci_sriov_get_totalvfs(adapter->pdev);
4409 adapter->num_vfs = old_vfs;
4412 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4413 be_calculate_pf_pool_rss_tables(adapter);
4414 dev_info(&adapter->pdev->dev,
4415 "RSS can be enabled for all VFs if num_vfs <= %d\n",
4416 be_max_pf_pool_rss_tables(adapter));
4421 static void be_alloc_sriov_res(struct be_adapter *adapter)
4423 int old_vfs = pci_num_vf(adapter->pdev);
4424 struct be_resources vft_res = {0};
4427 be_get_sriov_config(adapter);
4430 pci_sriov_set_totalvfs(adapter->pdev, be_max_vfs(adapter));
4432 /* When the HW is in SRIOV capable configuration, the PF-pool
4433 * resources are given to PF during driver load, if there are no
4434 * old VFs. This facility is not available in BE3 FW.
4435 * Also, this is done by FW in Lancer chip.
4437 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4438 be_calculate_vf_res(adapter, 0, &vft_res);
4439 status = be_cmd_set_sriov_config(adapter, adapter->pool_res, 0,
4442 dev_err(&adapter->pdev->dev,
4443 "Failed to optimize SRIOV resources\n");
4447 static int be_get_resources(struct be_adapter *adapter)
4449 struct device *dev = &adapter->pdev->dev;
4450 struct be_resources res = {0};
4453 /* For Lancer, SH etc read per-function resource limits from FW.
4454 * GET_FUNC_CONFIG returns per function guaranteed limits.
4455 * GET_PROFILE_CONFIG returns PCI-E related limits PF-pool limits
4457 if (BEx_chip(adapter)) {
4458 BEx_get_resources(adapter, &res);
4460 status = be_cmd_get_func_config(adapter, &res);
4464 /* If a deafault RXQ must be created, we'll use up one RSSQ*/
4465 if (res.max_rss_qs && res.max_rss_qs == res.max_rx_qs &&
4466 !(res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS))
4467 res.max_rss_qs -= 1;
4470 /* If RoCE is supported stash away half the EQs for RoCE */
4471 res.max_nic_evt_qs = be_roce_supported(adapter) ?
4472 res.max_evt_qs / 2 : res.max_evt_qs;
4475 /* If FW supports RSS default queue, then skip creating non-RSS
4476 * queue for non-IP traffic.
4478 adapter->need_def_rxq = (be_if_cap_flags(adapter) &
4479 BE_IF_FLAGS_DEFQ_RSS) ? 0 : 1;
4481 dev_info(dev, "Max: txqs %d, rxqs %d, rss %d, eqs %d, vfs %d\n",
4482 be_max_txqs(adapter), be_max_rxqs(adapter),
4483 be_max_rss(adapter), be_max_nic_eqs(adapter),
4484 be_max_vfs(adapter));
4485 dev_info(dev, "Max: uc-macs %d, mc-macs %d, vlans %d\n",
4486 be_max_uc(adapter), be_max_mc(adapter),
4487 be_max_vlans(adapter));
4489 /* Ensure RX and TX queues are created in pairs at init time */
4490 adapter->cfg_num_rx_irqs =
4491 min_t(u16, netif_get_num_default_rss_queues(),
4492 be_max_qp_irqs(adapter));
4493 adapter->cfg_num_tx_irqs = adapter->cfg_num_rx_irqs;
4497 static int be_get_config(struct be_adapter *adapter)
4502 status = be_cmd_get_cntl_attributes(adapter);
4506 status = be_cmd_query_fw_cfg(adapter);
4510 if (!lancer_chip(adapter) && be_physfn(adapter))
4511 be_cmd_get_fat_dump_len(adapter, &adapter->fat_dump_len);
4513 if (BEx_chip(adapter)) {
4514 level = be_cmd_get_fw_log_level(adapter);
4515 adapter->msg_enable =
4516 level <= FW_LOG_LEVEL_DEFAULT ? NETIF_MSG_HW : 0;
4519 be_cmd_get_acpi_wol_cap(adapter);
4520 pci_enable_wake(adapter->pdev, PCI_D3hot, adapter->wol_en);
4521 pci_enable_wake(adapter->pdev, PCI_D3cold, adapter->wol_en);
4523 be_cmd_query_port_name(adapter);
4525 if (be_physfn(adapter)) {
4526 status = be_cmd_get_active_profile(adapter, &profile_id);
4528 dev_info(&adapter->pdev->dev,
4529 "Using profile 0x%x\n", profile_id);
4535 static int be_mac_setup(struct be_adapter *adapter)
4540 if (is_zero_ether_addr(adapter->netdev->dev_addr)) {
4541 status = be_cmd_get_perm_mac(adapter, mac);
4545 memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
4546 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
4552 static void be_schedule_worker(struct be_adapter *adapter)
4554 queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));
4555 adapter->flags |= BE_FLAGS_WORKER_SCHEDULED;
4558 static void be_destroy_err_recovery_workq(void)
4560 if (!be_err_recovery_workq)
4563 flush_workqueue(be_err_recovery_workq);
4564 destroy_workqueue(be_err_recovery_workq);
4565 be_err_recovery_workq = NULL;
4568 static void be_schedule_err_detection(struct be_adapter *adapter, u32 delay)
4570 struct be_error_recovery *err_rec = &adapter->error_recovery;
4572 if (!be_err_recovery_workq)
4575 queue_delayed_work(be_err_recovery_workq, &err_rec->err_detection_work,
4576 msecs_to_jiffies(delay));
4577 adapter->flags |= BE_FLAGS_ERR_DETECTION_SCHEDULED;
4580 static int be_setup_queues(struct be_adapter *adapter)
4582 struct net_device *netdev = adapter->netdev;
4585 status = be_evt_queues_create(adapter);
4589 status = be_tx_qs_create(adapter);
4593 status = be_rx_cqs_create(adapter);
4597 status = be_mcc_queues_create(adapter);
4601 status = netif_set_real_num_rx_queues(netdev, adapter->num_rx_qs);
4605 status = netif_set_real_num_tx_queues(netdev, adapter->num_tx_qs);
4611 dev_err(&adapter->pdev->dev, "queue_setup failed\n");
4615 static int be_if_create(struct be_adapter *adapter)
4617 u32 en_flags = BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS;
4618 u32 cap_flags = be_if_cap_flags(adapter);
4621 /* alloc required memory for other filtering fields */
4622 adapter->pmac_id = kcalloc(be_max_uc(adapter),
4623 sizeof(*adapter->pmac_id), GFP_KERNEL);
4624 if (!adapter->pmac_id)
4627 adapter->mc_list = kcalloc(be_max_mc(adapter),
4628 sizeof(*adapter->mc_list), GFP_KERNEL);
4629 if (!adapter->mc_list)
4632 adapter->uc_list = kcalloc(be_max_uc(adapter),
4633 sizeof(*adapter->uc_list), GFP_KERNEL);
4634 if (!adapter->uc_list)
4637 if (adapter->cfg_num_rx_irqs == 1)
4638 cap_flags &= ~(BE_IF_FLAGS_DEFQ_RSS | BE_IF_FLAGS_RSS);
4640 en_flags &= cap_flags;
4641 /* will enable all the needed filter flags in be_open() */
4642 status = be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags,
4643 &adapter->if_handle, 0);
4651 int be_update_queues(struct be_adapter *adapter)
4653 struct net_device *netdev = adapter->netdev;
4656 if (netif_running(netdev))
4659 be_cancel_worker(adapter);
4661 /* If any vectors have been shared with RoCE we cannot re-program
4664 if (!adapter->num_msix_roce_vec)
4665 be_msix_disable(adapter);
4667 be_clear_queues(adapter);
4668 status = be_cmd_if_destroy(adapter, adapter->if_handle, 0);
4672 if (!msix_enabled(adapter)) {
4673 status = be_msix_enable(adapter);
4678 status = be_if_create(adapter);
4682 status = be_setup_queues(adapter);
4686 be_schedule_worker(adapter);
4688 if (netif_running(netdev))
4689 status = be_open(netdev);
4694 static inline int fw_major_num(const char *fw_ver)
4696 int fw_major = 0, i;
4698 i = sscanf(fw_ver, "%d.", &fw_major);
4705 /* If it is error recovery, FLR the PF
4706 * Else if any VFs are already enabled don't FLR the PF
4708 static bool be_reset_required(struct be_adapter *adapter)
4710 if (be_error_recovering(adapter))
4713 return pci_num_vf(adapter->pdev) == 0;
4716 /* Wait for the FW to be ready and perform the required initialization */
4717 static int be_func_init(struct be_adapter *adapter)
4721 status = be_fw_wait_ready(adapter);
4725 /* FW is now ready; clear errors to allow cmds/doorbell */
4726 be_clear_error(adapter, BE_CLEAR_ALL);
4728 if (be_reset_required(adapter)) {
4729 status = be_cmd_reset_function(adapter);
4733 /* Wait for interrupts to quiesce after an FLR */
4737 /* Tell FW we're ready to fire cmds */
4738 status = be_cmd_fw_init(adapter);
4742 /* Allow interrupts for other ULPs running on NIC function */
4743 be_intr_set(adapter, true);
4748 static int be_setup(struct be_adapter *adapter)
4750 struct device *dev = &adapter->pdev->dev;
4753 status = be_func_init(adapter);
4757 be_setup_init(adapter);
4759 if (!lancer_chip(adapter))
4760 be_cmd_req_native_mode(adapter);
4762 /* invoke this cmd first to get pf_num and vf_num which are needed
4763 * for issuing profile related cmds
4765 if (!BEx_chip(adapter)) {
4766 status = be_cmd_get_func_config(adapter, NULL);
4771 status = be_get_config(adapter);
4775 if (!BE2_chip(adapter) && be_physfn(adapter))
4776 be_alloc_sriov_res(adapter);
4778 status = be_get_resources(adapter);
4782 status = be_msix_enable(adapter);
4786 /* will enable all the needed filter flags in be_open() */
4787 status = be_if_create(adapter);
4791 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
4793 status = be_setup_queues(adapter);
4798 be_cmd_get_fn_privileges(adapter, &adapter->cmd_privileges, 0);
4800 status = be_mac_setup(adapter);
4804 be_cmd_get_fw_ver(adapter);
4805 dev_info(dev, "FW version is %s\n", adapter->fw_ver);
4807 if (BE2_chip(adapter) && fw_major_num(adapter->fw_ver) < 4) {
4808 dev_err(dev, "Firmware on card is old(%s), IRQs may not work",
4810 dev_err(dev, "Please upgrade firmware to version >= 4.0\n");
4813 status = be_cmd_set_flow_control(adapter, adapter->tx_fc,
4816 be_cmd_get_flow_control(adapter, &adapter->tx_fc,
4819 dev_info(&adapter->pdev->dev, "HW Flow control - TX:%d RX:%d\n",
4820 adapter->tx_fc, adapter->rx_fc);
4822 if (be_physfn(adapter))
4823 be_cmd_set_logical_link_config(adapter,
4824 IFLA_VF_LINK_STATE_AUTO, 0);
4826 /* BE3 EVB echoes broadcast/multicast packets back to PF's vport
4827 * confusing a linux bridge or OVS that it might be connected to.
4828 * Set the EVB to PASSTHRU mode which effectively disables the EVB
4829 * when SRIOV is not enabled.
4831 if (BE3_chip(adapter))
4832 be_cmd_set_hsw_config(adapter, 0, 0, adapter->if_handle,
4833 PORT_FWD_TYPE_PASSTHRU, 0);
4835 if (adapter->num_vfs)
4836 be_vf_setup(adapter);
4838 status = be_cmd_get_phy_info(adapter);
4839 if (!status && be_pause_supported(adapter))
4840 adapter->phy.fc_autoneg = 1;
4842 if (be_physfn(adapter) && !lancer_chip(adapter))
4843 be_cmd_set_features(adapter);
4845 be_schedule_worker(adapter);
4846 adapter->flags |= BE_FLAGS_SETUP_DONE;
4853 #ifdef CONFIG_NET_POLL_CONTROLLER
4854 static void be_netpoll(struct net_device *netdev)
4856 struct be_adapter *adapter = netdev_priv(netdev);
4857 struct be_eq_obj *eqo;
4860 for_all_evt_queues(adapter, eqo, i) {
4861 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
4862 napi_schedule(&eqo->napi);
4867 int be_load_fw(struct be_adapter *adapter, u8 *fw_file)
4869 const struct firmware *fw;
4872 if (!netif_running(adapter->netdev)) {
4873 dev_err(&adapter->pdev->dev,
4874 "Firmware load not allowed (interface is down)\n");
4878 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
4882 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
4884 if (lancer_chip(adapter))
4885 status = lancer_fw_download(adapter, fw);
4887 status = be_fw_download(adapter, fw);
4890 be_cmd_get_fw_ver(adapter);
4893 release_firmware(fw);
4897 static int be_ndo_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
4900 struct be_adapter *adapter = netdev_priv(dev);
4901 struct nlattr *attr, *br_spec;
4906 if (!sriov_enabled(adapter))
4909 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
4913 nla_for_each_nested(attr, br_spec, rem) {
4914 if (nla_type(attr) != IFLA_BRIDGE_MODE)
4917 if (nla_len(attr) < sizeof(mode))
4920 mode = nla_get_u16(attr);
4921 if (BE3_chip(adapter) && mode == BRIDGE_MODE_VEPA)
4924 if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB)
4927 status = be_cmd_set_hsw_config(adapter, 0, 0,
4929 mode == BRIDGE_MODE_VEPA ?
4930 PORT_FWD_TYPE_VEPA :
4931 PORT_FWD_TYPE_VEB, 0);
4935 dev_info(&adapter->pdev->dev, "enabled switch mode: %s\n",
4936 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
4941 dev_err(&adapter->pdev->dev, "Failed to set switch mode %s\n",
4942 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
4947 static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
4948 struct net_device *dev, u32 filter_mask,
4951 struct be_adapter *adapter = netdev_priv(dev);
4955 /* BE and Lancer chips support VEB mode only */
4956 if (BEx_chip(adapter) || lancer_chip(adapter)) {
4957 /* VEB is disabled in non-SR-IOV profiles on BE3/Lancer */
4958 if (!pci_sriov_get_totalvfs(adapter->pdev))
4960 hsw_mode = PORT_FWD_TYPE_VEB;
4962 status = be_cmd_get_hsw_config(adapter, NULL, 0,
4963 adapter->if_handle, &hsw_mode,
4968 if (hsw_mode == PORT_FWD_TYPE_PASSTHRU)
4972 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
4973 hsw_mode == PORT_FWD_TYPE_VEPA ?
4974 BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB,
4975 0, 0, nlflags, filter_mask, NULL);
4978 static struct be_cmd_work *be_alloc_work(struct be_adapter *adapter,
4979 void (*func)(struct work_struct *))
4981 struct be_cmd_work *work;
4983 work = kzalloc(sizeof(*work), GFP_ATOMIC);
4985 dev_err(&adapter->pdev->dev,
4986 "be_work memory allocation failed\n");
4990 INIT_WORK(&work->work, func);
4991 work->adapter = adapter;
4995 /* VxLAN offload Notes:
4997 * The stack defines tunnel offload flags (hw_enc_features) for IP and doesn't
4998 * distinguish various types of transports (VxLAN, GRE, NVGRE ..). So, offload
4999 * is expected to work across all types of IP tunnels once exported. Skyhawk
5000 * supports offloads for either VxLAN or NVGRE, exclusively. So we export VxLAN
5001 * offloads in hw_enc_features only when a VxLAN port is added. If other (non
5002 * VxLAN) tunnels are configured while VxLAN offloads are enabled, offloads for
5003 * those other tunnels are unexported on the fly through ndo_features_check().
5005 * Skyhawk supports VxLAN offloads only for one UDP dport. So, if the stack
5006 * adds more than one port, disable offloads and don't re-enable them again
5007 * until after all the tunnels are removed.
5009 static void be_work_add_vxlan_port(struct work_struct *work)
5011 struct be_cmd_work *cmd_work =
5012 container_of(work, struct be_cmd_work, work);
5013 struct be_adapter *adapter = cmd_work->adapter;
5014 struct net_device *netdev = adapter->netdev;
5015 struct device *dev = &adapter->pdev->dev;
5016 __be16 port = cmd_work->info.vxlan_port;
5019 if (adapter->vxlan_port == port && adapter->vxlan_port_count) {
5020 adapter->vxlan_port_aliases++;
5024 if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS) {
5026 "Only one UDP port supported for VxLAN offloads\n");
5027 dev_info(dev, "Disabling VxLAN offloads\n");
5028 adapter->vxlan_port_count++;
5032 if (adapter->vxlan_port_count++ >= 1)
5035 status = be_cmd_manage_iface(adapter, adapter->if_handle,
5036 OP_CONVERT_NORMAL_TO_TUNNEL);
5038 dev_warn(dev, "Failed to convert normal interface to tunnel\n");
5042 status = be_cmd_set_vxlan_port(adapter, port);
5044 dev_warn(dev, "Failed to add VxLAN port\n");
5047 adapter->flags |= BE_FLAGS_VXLAN_OFFLOADS;
5048 adapter->vxlan_port = port;
5050 netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
5051 NETIF_F_TSO | NETIF_F_TSO6 |
5052 NETIF_F_GSO_UDP_TUNNEL;
5053 netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
5054 netdev->features |= NETIF_F_GSO_UDP_TUNNEL;
5056 dev_info(dev, "Enabled VxLAN offloads for UDP port %d\n",
5060 be_disable_vxlan_offloads(adapter);
5065 static void be_work_del_vxlan_port(struct work_struct *work)
5067 struct be_cmd_work *cmd_work =
5068 container_of(work, struct be_cmd_work, work);
5069 struct be_adapter *adapter = cmd_work->adapter;
5070 __be16 port = cmd_work->info.vxlan_port;
5072 if (adapter->vxlan_port != port)
5075 if (adapter->vxlan_port_aliases) {
5076 adapter->vxlan_port_aliases--;
5080 be_disable_vxlan_offloads(adapter);
5082 dev_info(&adapter->pdev->dev,
5083 "Disabled VxLAN offloads for UDP port %d\n",
5086 adapter->vxlan_port_count--;
5091 static void be_cfg_vxlan_port(struct net_device *netdev,
5092 struct udp_tunnel_info *ti,
5093 void (*func)(struct work_struct *))
5095 struct be_adapter *adapter = netdev_priv(netdev);
5096 struct be_cmd_work *cmd_work;
5098 if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
5101 if (lancer_chip(adapter) || BEx_chip(adapter) || be_is_mc(adapter))
5104 cmd_work = be_alloc_work(adapter, func);
5106 cmd_work->info.vxlan_port = ti->port;
5107 queue_work(be_wq, &cmd_work->work);
5111 static void be_del_vxlan_port(struct net_device *netdev,
5112 struct udp_tunnel_info *ti)
5114 be_cfg_vxlan_port(netdev, ti, be_work_del_vxlan_port);
5117 static void be_add_vxlan_port(struct net_device *netdev,
5118 struct udp_tunnel_info *ti)
5120 be_cfg_vxlan_port(netdev, ti, be_work_add_vxlan_port);
5123 static netdev_features_t be_features_check(struct sk_buff *skb,
5124 struct net_device *dev,
5125 netdev_features_t features)
5127 struct be_adapter *adapter = netdev_priv(dev);
5130 /* The code below restricts offload features for some tunneled packets.
5131 * Offload features for normal (non tunnel) packets are unchanged.
5133 if (!skb->encapsulation ||
5134 !(adapter->flags & BE_FLAGS_VXLAN_OFFLOADS))
5137 /* It's an encapsulated packet and VxLAN offloads are enabled. We
5138 * should disable tunnel offload features if it's not a VxLAN packet,
5139 * as tunnel offloads have been enabled only for VxLAN. This is done to
5140 * allow other tunneled traffic like GRE work fine while VxLAN
5141 * offloads are configured in Skyhawk-R.
5143 switch (vlan_get_protocol(skb)) {
5144 case htons(ETH_P_IP):
5145 l4_hdr = ip_hdr(skb)->protocol;
5147 case htons(ETH_P_IPV6):
5148 l4_hdr = ipv6_hdr(skb)->nexthdr;
5154 if (l4_hdr != IPPROTO_UDP ||
5155 skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
5156 skb->inner_protocol != htons(ETH_P_TEB) ||
5157 skb_inner_mac_header(skb) - skb_transport_header(skb) !=
5158 sizeof(struct udphdr) + sizeof(struct vxlanhdr) ||
5159 !adapter->vxlan_port ||
5160 udp_hdr(skb)->dest != adapter->vxlan_port)
5161 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
5166 static int be_get_phys_port_id(struct net_device *dev,
5167 struct netdev_phys_item_id *ppid)
5169 int i, id_len = CNTL_SERIAL_NUM_WORDS * CNTL_SERIAL_NUM_WORD_SZ + 1;
5170 struct be_adapter *adapter = netdev_priv(dev);
5173 if (MAX_PHYS_ITEM_ID_LEN < id_len)
5176 ppid->id[0] = adapter->hba_port_num + 1;
5178 for (i = CNTL_SERIAL_NUM_WORDS - 1; i >= 0;
5179 i--, id += CNTL_SERIAL_NUM_WORD_SZ)
5180 memcpy(id, &adapter->serial_num[i], CNTL_SERIAL_NUM_WORD_SZ);
5182 ppid->id_len = id_len;
5187 static void be_set_rx_mode(struct net_device *dev)
5189 struct be_adapter *adapter = netdev_priv(dev);
5190 struct be_cmd_work *work;
5192 work = be_alloc_work(adapter, be_work_set_rx_mode);
5194 queue_work(be_wq, &work->work);
5197 static const struct net_device_ops be_netdev_ops = {
5198 .ndo_open = be_open,
5199 .ndo_stop = be_close,
5200 .ndo_start_xmit = be_xmit,
5201 .ndo_set_rx_mode = be_set_rx_mode,
5202 .ndo_set_mac_address = be_mac_addr_set,
5203 .ndo_get_stats64 = be_get_stats64,
5204 .ndo_validate_addr = eth_validate_addr,
5205 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
5206 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
5207 .ndo_set_vf_mac = be_set_vf_mac,
5208 .ndo_set_vf_vlan = be_set_vf_vlan,
5209 .ndo_set_vf_rate = be_set_vf_tx_rate,
5210 .ndo_get_vf_config = be_get_vf_config,
5211 .ndo_set_vf_link_state = be_set_vf_link_state,
5212 .ndo_set_vf_spoofchk = be_set_vf_spoofchk,
5213 #ifdef CONFIG_NET_POLL_CONTROLLER
5214 .ndo_poll_controller = be_netpoll,
5216 .ndo_bridge_setlink = be_ndo_bridge_setlink,
5217 .ndo_bridge_getlink = be_ndo_bridge_getlink,
5218 #ifdef CONFIG_NET_RX_BUSY_POLL
5219 .ndo_busy_poll = be_busy_poll,
5221 .ndo_udp_tunnel_add = be_add_vxlan_port,
5222 .ndo_udp_tunnel_del = be_del_vxlan_port,
5223 .ndo_features_check = be_features_check,
5224 .ndo_get_phys_port_id = be_get_phys_port_id,
5227 static void be_netdev_init(struct net_device *netdev)
5229 struct be_adapter *adapter = netdev_priv(netdev);
5231 netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
5232 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
5233 NETIF_F_HW_VLAN_CTAG_TX;
5234 if ((be_if_cap_flags(adapter) & BE_IF_FLAGS_RSS))
5235 netdev->hw_features |= NETIF_F_RXHASH;
5237 netdev->features |= netdev->hw_features |
5238 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
5240 netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
5241 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
5243 netdev->priv_flags |= IFF_UNICAST_FLT;
5245 netdev->flags |= IFF_MULTICAST;
5247 netif_set_gso_max_size(netdev, BE_MAX_GSO_SIZE - ETH_HLEN);
5249 netdev->netdev_ops = &be_netdev_ops;
5251 netdev->ethtool_ops = &be_ethtool_ops;
5253 /* MTU range: 256 - 9000 */
5254 netdev->min_mtu = BE_MIN_MTU;
5255 netdev->max_mtu = BE_MAX_MTU;
5258 static void be_cleanup(struct be_adapter *adapter)
5260 struct net_device *netdev = adapter->netdev;
5263 netif_device_detach(netdev);
5264 if (netif_running(netdev))
5271 static int be_resume(struct be_adapter *adapter)
5273 struct net_device *netdev = adapter->netdev;
5276 status = be_setup(adapter);
5281 if (netif_running(netdev))
5282 status = be_open(netdev);
5288 netif_device_attach(netdev);
5293 static void be_soft_reset(struct be_adapter *adapter)
5297 dev_info(&adapter->pdev->dev, "Initiating chip soft reset\n");
5298 val = ioread32(adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);
5299 val |= SLIPORT_SOFTRESET_SR_MASK;
5300 iowrite32(val, adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);
5303 static bool be_err_is_recoverable(struct be_adapter *adapter)
5305 struct be_error_recovery *err_rec = &adapter->error_recovery;
5306 unsigned long initial_idle_time =
5307 msecs_to_jiffies(ERR_RECOVERY_IDLE_TIME);
5308 unsigned long recovery_interval =
5309 msecs_to_jiffies(ERR_RECOVERY_INTERVAL);
5313 val = be_POST_stage_get(adapter);
5314 if ((val & POST_STAGE_RECOVERABLE_ERR) != POST_STAGE_RECOVERABLE_ERR)
5316 ue_err_code = val & POST_ERR_RECOVERY_CODE_MASK;
5317 if (ue_err_code == 0)
5320 dev_err(&adapter->pdev->dev, "Recoverable HW error code: 0x%x\n",
5323 if (jiffies - err_rec->probe_time <= initial_idle_time) {
5324 dev_err(&adapter->pdev->dev,
5325 "Cannot recover within %lu sec from driver load\n",
5326 jiffies_to_msecs(initial_idle_time) / MSEC_PER_SEC);
5330 if (err_rec->last_recovery_time &&
5331 (jiffies - err_rec->last_recovery_time <= recovery_interval)) {
5332 dev_err(&adapter->pdev->dev,
5333 "Cannot recover within %lu sec from last recovery\n",
5334 jiffies_to_msecs(recovery_interval) / MSEC_PER_SEC);
5338 if (ue_err_code == err_rec->last_err_code) {
5339 dev_err(&adapter->pdev->dev,
5340 "Cannot recover from a consecutive TPE error\n");
5344 err_rec->last_recovery_time = jiffies;
5345 err_rec->last_err_code = ue_err_code;
5349 static int be_tpe_recover(struct be_adapter *adapter)
5351 struct be_error_recovery *err_rec = &adapter->error_recovery;
5352 int status = -EAGAIN;
5355 switch (err_rec->recovery_state) {
5356 case ERR_RECOVERY_ST_NONE:
5357 err_rec->recovery_state = ERR_RECOVERY_ST_DETECT;
5358 err_rec->resched_delay = ERR_RECOVERY_UE_DETECT_DURATION;
5361 case ERR_RECOVERY_ST_DETECT:
5362 val = be_POST_stage_get(adapter);
5363 if ((val & POST_STAGE_RECOVERABLE_ERR) !=
5364 POST_STAGE_RECOVERABLE_ERR) {
5365 dev_err(&adapter->pdev->dev,
5366 "Unrecoverable HW error detected: 0x%x\n", val);
5368 err_rec->resched_delay = 0;
5372 dev_err(&adapter->pdev->dev, "Recoverable HW error detected\n");
5374 /* Only PF0 initiates Chip Soft Reset. But PF0 must wait UE2SR
5375 * milliseconds before it checks for final error status in
5376 * SLIPORT_SEMAPHORE to determine if recovery criteria is met.
5377 * If it does, then PF0 initiates a Soft Reset.
5379 if (adapter->pf_num == 0) {
5380 err_rec->recovery_state = ERR_RECOVERY_ST_RESET;
5381 err_rec->resched_delay = err_rec->ue_to_reset_time -
5382 ERR_RECOVERY_UE_DETECT_DURATION;
5386 err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;
5387 err_rec->resched_delay = err_rec->ue_to_poll_time -
5388 ERR_RECOVERY_UE_DETECT_DURATION;
5391 case ERR_RECOVERY_ST_RESET:
5392 if (!be_err_is_recoverable(adapter)) {
5393 dev_err(&adapter->pdev->dev,
5394 "Failed to meet recovery criteria\n");
5396 err_rec->resched_delay = 0;
5399 be_soft_reset(adapter);
5400 err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;
5401 err_rec->resched_delay = err_rec->ue_to_poll_time -
5402 err_rec->ue_to_reset_time;
5405 case ERR_RECOVERY_ST_PRE_POLL:
5406 err_rec->recovery_state = ERR_RECOVERY_ST_REINIT;
5407 err_rec->resched_delay = 0;
5408 status = 0; /* done */
5413 err_rec->resched_delay = 0;
5420 static int be_err_recover(struct be_adapter *adapter)
5424 if (!lancer_chip(adapter)) {
5425 if (!adapter->error_recovery.recovery_supported ||
5426 adapter->priv_flags & BE_DISABLE_TPE_RECOVERY)
5428 status = be_tpe_recover(adapter);
5433 /* Wait for adapter to reach quiescent state before
5436 status = be_fw_wait_ready(adapter);
5440 adapter->flags |= BE_FLAGS_TRY_RECOVERY;
5442 be_cleanup(adapter);
5444 status = be_resume(adapter);
5448 adapter->flags &= ~BE_FLAGS_TRY_RECOVERY;
5454 static void be_err_detection_task(struct work_struct *work)
5456 struct be_error_recovery *err_rec =
5457 container_of(work, struct be_error_recovery,
5458 err_detection_work.work);
5459 struct be_adapter *adapter =
5460 container_of(err_rec, struct be_adapter,
5462 u32 resched_delay = ERR_RECOVERY_DETECTION_DELAY;
5463 struct device *dev = &adapter->pdev->dev;
5464 int recovery_status;
5466 be_detect_error(adapter);
5467 if (!be_check_error(adapter, BE_ERROR_HW))
5468 goto reschedule_task;
5470 recovery_status = be_err_recover(adapter);
5471 if (!recovery_status) {
5472 err_rec->recovery_retries = 0;
5473 err_rec->recovery_state = ERR_RECOVERY_ST_NONE;
5474 dev_info(dev, "Adapter recovery successful\n");
5475 goto reschedule_task;
5476 } else if (!lancer_chip(adapter) && err_rec->resched_delay) {
5477 /* BEx/SH recovery state machine */
5478 if (adapter->pf_num == 0 &&
5479 err_rec->recovery_state > ERR_RECOVERY_ST_DETECT)
5480 dev_err(&adapter->pdev->dev,
5481 "Adapter recovery in progress\n");
5482 resched_delay = err_rec->resched_delay;
5483 goto reschedule_task;
5484 } else if (lancer_chip(adapter) && be_virtfn(adapter)) {
5485 /* For VFs, check if PF have allocated resources
5488 dev_err(dev, "Re-trying adapter recovery\n");
5489 goto reschedule_task;
5490 } else if (lancer_chip(adapter) && err_rec->recovery_retries++ <
5491 ERR_RECOVERY_MAX_RETRY_COUNT) {
5492 /* In case of another error during recovery, it takes 30 sec
5493 * for adapter to come out of error. Retry error recovery after
5494 * this time interval.
5496 dev_err(&adapter->pdev->dev, "Re-trying adapter recovery\n");
5497 resched_delay = ERR_RECOVERY_RETRY_DELAY;
5498 goto reschedule_task;
5500 dev_err(dev, "Adapter recovery failed\n");
5501 dev_err(dev, "Please reboot server to recover\n");
5507 be_schedule_err_detection(adapter, resched_delay);
5510 static void be_log_sfp_info(struct be_adapter *adapter)
5514 status = be_cmd_query_sfp_info(adapter);
5516 dev_err(&adapter->pdev->dev,
5517 "Port %c: %s Vendor: %s part no: %s",
5519 be_misconfig_evt_port_state[adapter->phy_state],
5520 adapter->phy.vendor_name,
5521 adapter->phy.vendor_pn);
5523 adapter->flags &= ~BE_FLAGS_PHY_MISCONFIGURED;
5526 static void be_worker(struct work_struct *work)
5528 struct be_adapter *adapter =
5529 container_of(work, struct be_adapter, work.work);
5530 struct be_rx_obj *rxo;
5533 if (be_physfn(adapter) &&
5534 MODULO(adapter->work_counter, adapter->be_get_temp_freq) == 0)
5535 be_cmd_get_die_temperature(adapter);
5537 /* when interrupts are not yet enabled, just reap any pending
5540 if (!netif_running(adapter->netdev)) {
5542 be_process_mcc(adapter);
5547 if (!adapter->stats_cmd_sent) {
5548 if (lancer_chip(adapter))
5549 lancer_cmd_get_pport_stats(adapter,
5550 &adapter->stats_cmd);
5552 be_cmd_get_stats(adapter, &adapter->stats_cmd);
5555 for_all_rx_queues(adapter, rxo, i) {
5556 /* Replenish RX-queues starved due to memory
5557 * allocation failures.
5559 if (rxo->rx_post_starved)
5560 be_post_rx_frags(rxo, GFP_KERNEL, MAX_RX_POST);
5563 /* EQ-delay update for Skyhawk is done while notifying EQ */
5564 if (!skyhawk_chip(adapter))
5565 be_eqd_update(adapter, false);
5567 if (adapter->flags & BE_FLAGS_PHY_MISCONFIGURED)
5568 be_log_sfp_info(adapter);
5571 adapter->work_counter++;
5572 queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));
5575 static void be_unmap_pci_bars(struct be_adapter *adapter)
5578 pci_iounmap(adapter->pdev, adapter->csr);
5580 pci_iounmap(adapter->pdev, adapter->db);
5581 if (adapter->pcicfg && adapter->pcicfg_mapped)
5582 pci_iounmap(adapter->pdev, adapter->pcicfg);
5585 static int db_bar(struct be_adapter *adapter)
5587 if (lancer_chip(adapter) || be_virtfn(adapter))
5593 static int be_roce_map_pci_bars(struct be_adapter *adapter)
5595 if (skyhawk_chip(adapter)) {
5596 adapter->roce_db.size = 4096;
5597 adapter->roce_db.io_addr = pci_resource_start(adapter->pdev,
5599 adapter->roce_db.total_size = pci_resource_len(adapter->pdev,
5605 static int be_map_pci_bars(struct be_adapter *adapter)
5607 struct pci_dev *pdev = adapter->pdev;
5611 pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET, &sli_intf);
5612 adapter->sli_family = (sli_intf & SLI_INTF_FAMILY_MASK) >>
5613 SLI_INTF_FAMILY_SHIFT;
5614 adapter->virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;
5616 if (BEx_chip(adapter) && be_physfn(adapter)) {
5617 adapter->csr = pci_iomap(pdev, 2, 0);
5622 addr = pci_iomap(pdev, db_bar(adapter), 0);
5627 if (skyhawk_chip(adapter) || BEx_chip(adapter)) {
5628 if (be_physfn(adapter)) {
5629 /* PCICFG is the 2nd BAR in BE2 */
5630 addr = pci_iomap(pdev, BE2_chip(adapter) ? 1 : 0, 0);
5633 adapter->pcicfg = addr;
5634 adapter->pcicfg_mapped = true;
5636 adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET;
5637 adapter->pcicfg_mapped = false;
5641 be_roce_map_pci_bars(adapter);
5645 dev_err(&pdev->dev, "Error in mapping PCI BARs\n");
5646 be_unmap_pci_bars(adapter);
5650 static void be_drv_cleanup(struct be_adapter *adapter)
5652 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
5653 struct device *dev = &adapter->pdev->dev;
5656 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5658 mem = &adapter->rx_filter;
5660 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5662 mem = &adapter->stats_cmd;
5664 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5667 /* Allocate and initialize various fields in be_adapter struct */
5668 static int be_drv_init(struct be_adapter *adapter)
5670 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
5671 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
5672 struct be_dma_mem *rx_filter = &adapter->rx_filter;
5673 struct be_dma_mem *stats_cmd = &adapter->stats_cmd;
5674 struct device *dev = &adapter->pdev->dev;
5677 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
5678 mbox_mem_alloc->va = dma_zalloc_coherent(dev, mbox_mem_alloc->size,
5679 &mbox_mem_alloc->dma,
5681 if (!mbox_mem_alloc->va)
5684 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
5685 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
5686 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
5688 rx_filter->size = sizeof(struct be_cmd_req_rx_filter);
5689 rx_filter->va = dma_zalloc_coherent(dev, rx_filter->size,
5690 &rx_filter->dma, GFP_KERNEL);
5691 if (!rx_filter->va) {
5696 if (lancer_chip(adapter))
5697 stats_cmd->size = sizeof(struct lancer_cmd_req_pport_stats);
5698 else if (BE2_chip(adapter))
5699 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v0);
5700 else if (BE3_chip(adapter))
5701 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v1);
5703 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v2);
5704 stats_cmd->va = dma_zalloc_coherent(dev, stats_cmd->size,
5705 &stats_cmd->dma, GFP_KERNEL);
5706 if (!stats_cmd->va) {
5708 goto free_rx_filter;
5711 mutex_init(&adapter->mbox_lock);
5712 mutex_init(&adapter->mcc_lock);
5713 mutex_init(&adapter->rx_filter_lock);
5714 spin_lock_init(&adapter->mcc_cq_lock);
5715 init_completion(&adapter->et_cmd_compl);
5717 pci_save_state(adapter->pdev);
5719 INIT_DELAYED_WORK(&adapter->work, be_worker);
5721 adapter->error_recovery.recovery_state = ERR_RECOVERY_ST_NONE;
5722 adapter->error_recovery.resched_delay = 0;
5723 INIT_DELAYED_WORK(&adapter->error_recovery.err_detection_work,
5724 be_err_detection_task);
5726 adapter->rx_fc = true;
5727 adapter->tx_fc = true;
5729 /* Must be a power of 2 or else MODULO will BUG_ON */
5730 adapter->be_get_temp_freq = 64;
5735 dma_free_coherent(dev, rx_filter->size, rx_filter->va, rx_filter->dma);
5737 dma_free_coherent(dev, mbox_mem_alloc->size, mbox_mem_alloc->va,
5738 mbox_mem_alloc->dma);
5742 static void be_remove(struct pci_dev *pdev)
5744 struct be_adapter *adapter = pci_get_drvdata(pdev);
5749 be_roce_dev_remove(adapter);
5750 be_intr_set(adapter, false);
5752 be_cancel_err_detection(adapter);
5754 unregister_netdev(adapter->netdev);
5758 if (!pci_vfs_assigned(adapter->pdev))
5759 be_cmd_reset_function(adapter);
5761 /* tell fw we're done with firing cmds */
5762 be_cmd_fw_clean(adapter);
5764 be_unmap_pci_bars(adapter);
5765 be_drv_cleanup(adapter);
5767 pci_disable_pcie_error_reporting(pdev);
5769 pci_release_regions(pdev);
5770 pci_disable_device(pdev);
5772 free_netdev(adapter->netdev);
5775 static ssize_t be_hwmon_show_temp(struct device *dev,
5776 struct device_attribute *dev_attr,
5779 struct be_adapter *adapter = dev_get_drvdata(dev);
5781 /* Unit: millidegree Celsius */
5782 if (adapter->hwmon_info.be_on_die_temp == BE_INVALID_DIE_TEMP)
5785 return sprintf(buf, "%u\n",
5786 adapter->hwmon_info.be_on_die_temp * 1000);
5789 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO,
5790 be_hwmon_show_temp, NULL, 1);
5792 static struct attribute *be_hwmon_attrs[] = {
5793 &sensor_dev_attr_temp1_input.dev_attr.attr,
5797 ATTRIBUTE_GROUPS(be_hwmon);
5799 static char *mc_name(struct be_adapter *adapter)
5801 char *str = ""; /* default */
5803 switch (adapter->mc_type) {
5829 static inline char *func_name(struct be_adapter *adapter)
5831 return be_physfn(adapter) ? "PF" : "VF";
5834 static inline char *nic_name(struct pci_dev *pdev)
5836 switch (pdev->device) {
5843 return OC_NAME_LANCER;
5854 static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id)
5856 struct be_adapter *adapter;
5857 struct net_device *netdev;
5860 dev_info(&pdev->dev, "%s version is %s\n", DRV_NAME, DRV_VER);
5862 status = pci_enable_device(pdev);
5866 status = pci_request_regions(pdev, DRV_NAME);
5869 pci_set_master(pdev);
5871 netdev = alloc_etherdev_mqs(sizeof(*adapter), MAX_TX_QS, MAX_RX_QS);
5876 adapter = netdev_priv(netdev);
5877 adapter->pdev = pdev;
5878 pci_set_drvdata(pdev, adapter);
5879 adapter->netdev = netdev;
5880 SET_NETDEV_DEV(netdev, &pdev->dev);
5882 status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
5884 netdev->features |= NETIF_F_HIGHDMA;
5886 status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
5888 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
5893 status = pci_enable_pcie_error_reporting(pdev);
5895 dev_info(&pdev->dev, "PCIe error reporting enabled\n");
5897 status = be_map_pci_bars(adapter);
5901 status = be_drv_init(adapter);
5905 status = be_setup(adapter);
5909 be_netdev_init(netdev);
5910 status = register_netdev(netdev);
5914 be_roce_dev_add(adapter);
5916 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5917 adapter->error_recovery.probe_time = jiffies;
5919 /* On Die temperature not supported for VF. */
5920 if (be_physfn(adapter) && IS_ENABLED(CONFIG_BE2NET_HWMON)) {
5921 adapter->hwmon_info.hwmon_dev =
5922 devm_hwmon_device_register_with_groups(&pdev->dev,
5926 adapter->hwmon_info.be_on_die_temp = BE_INVALID_DIE_TEMP;
5929 dev_info(&pdev->dev, "%s: %s %s port %c\n", nic_name(pdev),
5930 func_name(adapter), mc_name(adapter), adapter->port_name);
5937 be_drv_cleanup(adapter);
5939 be_unmap_pci_bars(adapter);
5941 free_netdev(netdev);
5943 pci_release_regions(pdev);
5945 pci_disable_device(pdev);
5947 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
5951 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
5953 struct be_adapter *adapter = pci_get_drvdata(pdev);
5955 be_intr_set(adapter, false);
5956 be_cancel_err_detection(adapter);
5958 be_cleanup(adapter);
5960 pci_save_state(pdev);
5961 pci_disable_device(pdev);
5962 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5966 static int be_pci_resume(struct pci_dev *pdev)
5968 struct be_adapter *adapter = pci_get_drvdata(pdev);
5971 status = pci_enable_device(pdev);
5975 pci_restore_state(pdev);
5977 status = be_resume(adapter);
5981 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5987 * An FLR will stop BE from DMAing any data.
5989 static void be_shutdown(struct pci_dev *pdev)
5991 struct be_adapter *adapter = pci_get_drvdata(pdev);
5996 be_roce_dev_shutdown(adapter);
5997 cancel_delayed_work_sync(&adapter->work);
5998 be_cancel_err_detection(adapter);
6000 netif_device_detach(adapter->netdev);
6002 be_cmd_reset_function(adapter);
6004 pci_disable_device(pdev);
6007 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
6008 pci_channel_state_t state)
6010 struct be_adapter *adapter = pci_get_drvdata(pdev);
6012 dev_err(&adapter->pdev->dev, "EEH error detected\n");
6014 be_roce_dev_remove(adapter);
6016 if (!be_check_error(adapter, BE_ERROR_EEH)) {
6017 be_set_error(adapter, BE_ERROR_EEH);
6019 be_cancel_err_detection(adapter);
6021 be_cleanup(adapter);
6024 if (state == pci_channel_io_perm_failure)
6025 return PCI_ERS_RESULT_DISCONNECT;
6027 pci_disable_device(pdev);
6029 /* The error could cause the FW to trigger a flash debug dump.
6030 * Resetting the card while flash dump is in progress
6031 * can cause it not to recover; wait for it to finish.
6032 * Wait only for first function as it is needed only once per
6035 if (pdev->devfn == 0)
6038 return PCI_ERS_RESULT_NEED_RESET;
6041 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
6043 struct be_adapter *adapter = pci_get_drvdata(pdev);
6046 dev_info(&adapter->pdev->dev, "EEH reset\n");
6048 status = pci_enable_device(pdev);
6050 return PCI_ERS_RESULT_DISCONNECT;
6052 pci_set_master(pdev);
6053 pci_restore_state(pdev);
6055 /* Check if card is ok and fw is ready */
6056 dev_info(&adapter->pdev->dev,
6057 "Waiting for FW to be ready after EEH reset\n");
6058 status = be_fw_wait_ready(adapter);
6060 return PCI_ERS_RESULT_DISCONNECT;
6062 pci_cleanup_aer_uncorrect_error_status(pdev);
6063 be_clear_error(adapter, BE_CLEAR_ALL);
6064 return PCI_ERS_RESULT_RECOVERED;
6067 static void be_eeh_resume(struct pci_dev *pdev)
6070 struct be_adapter *adapter = pci_get_drvdata(pdev);
6072 dev_info(&adapter->pdev->dev, "EEH resume\n");
6074 pci_save_state(pdev);
6076 status = be_resume(adapter);
6080 be_roce_dev_add(adapter);
6082 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
6085 dev_err(&adapter->pdev->dev, "EEH resume failed\n");
6088 static int be_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
6090 struct be_adapter *adapter = pci_get_drvdata(pdev);
6091 struct be_resources vft_res = {0};
6095 be_vf_clear(adapter);
6097 adapter->num_vfs = num_vfs;
6099 if (adapter->num_vfs == 0 && pci_vfs_assigned(pdev)) {
6100 dev_warn(&pdev->dev,
6101 "Cannot disable VFs while they are assigned\n");
6105 /* When the HW is in SRIOV capable configuration, the PF-pool resources
6106 * are equally distributed across the max-number of VFs. The user may
6107 * request only a subset of the max-vfs to be enabled.
6108 * Based on num_vfs, redistribute the resources across num_vfs so that
6109 * each VF will have access to more number of resources.
6110 * This facility is not available in BE3 FW.
6111 * Also, this is done by FW in Lancer chip.
6113 if (skyhawk_chip(adapter) && !pci_num_vf(pdev)) {
6114 be_calculate_vf_res(adapter, adapter->num_vfs,
6116 status = be_cmd_set_sriov_config(adapter, adapter->pool_res,
6117 adapter->num_vfs, &vft_res);
6120 "Failed to optimize SR-IOV resources\n");
6123 status = be_get_resources(adapter);
6125 return be_cmd_status(status);
6127 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
6129 status = be_update_queues(adapter);
6132 return be_cmd_status(status);
6134 if (adapter->num_vfs)
6135 status = be_vf_setup(adapter);
6138 return adapter->num_vfs;
6143 static const struct pci_error_handlers be_eeh_handlers = {
6144 .error_detected = be_eeh_err_detected,
6145 .slot_reset = be_eeh_reset,
6146 .resume = be_eeh_resume,
6149 static struct pci_driver be_driver = {
6151 .id_table = be_dev_ids,
6153 .remove = be_remove,
6154 .suspend = be_suspend,
6155 .resume = be_pci_resume,
6156 .shutdown = be_shutdown,
6157 .sriov_configure = be_pci_sriov_configure,
6158 .err_handler = &be_eeh_handlers
6161 static int __init be_init_module(void)
6165 if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
6166 rx_frag_size != 2048) {
6167 printk(KERN_WARNING DRV_NAME
6168 " : Module param rx_frag_size must be 2048/4096/8192."
6170 rx_frag_size = 2048;
6174 pr_info(DRV_NAME " : Module param num_vfs is obsolete.");
6175 pr_info(DRV_NAME " : Use sysfs method to enable VFs\n");
6178 be_wq = create_singlethread_workqueue("be_wq");
6180 pr_warn(DRV_NAME "workqueue creation failed\n");
6184 be_err_recovery_workq =
6185 create_singlethread_workqueue("be_err_recover");
6186 if (!be_err_recovery_workq)
6187 pr_warn(DRV_NAME "Could not create error recovery workqueue\n");
6189 status = pci_register_driver(&be_driver);
6191 destroy_workqueue(be_wq);
6192 be_destroy_err_recovery_workq();
6196 module_init(be_init_module);
6198 static void __exit be_exit_module(void)
6200 pci_unregister_driver(&be_driver);
6202 be_destroy_err_recovery_workq();
6205 destroy_workqueue(be_wq);
6207 module_exit(be_exit_module);