1 // SPDX-License-Identifier: GPL-2.0-only
3 * Huawei HiNIC PCI Express Linux driver
4 * Copyright(c) 2017 Huawei Technologies Co., Ltd
7 #include <linux/kernel.h>
8 #include <linux/module.h>
9 #include <linux/moduleparam.h>
10 #include <linux/pci.h>
11 #include <linux/device.h>
12 #include <linux/errno.h>
13 #include <linux/types.h>
14 #include <linux/etherdevice.h>
15 #include <linux/netdevice.h>
16 #include <linux/slab.h>
17 #include <linux/if_vlan.h>
18 #include <linux/semaphore.h>
19 #include <linux/workqueue.h>
21 #include <linux/bitops.h>
22 #include <linux/bitmap.h>
23 #include <linux/delay.h>
24 #include <linux/err.h>
26 #include "hinic_hw_qp.h"
27 #include "hinic_hw_dev.h"
28 #include "hinic_port.h"
31 #include "hinic_dev.h"
33 MODULE_AUTHOR("Huawei Technologies CO., Ltd");
34 MODULE_DESCRIPTION("Huawei Intelligent NIC driver");
35 MODULE_LICENSE("GPL");
37 static unsigned int tx_weight = 64;
38 module_param(tx_weight, uint, 0644);
39 MODULE_PARM_DESC(tx_weight, "Number Tx packets for NAPI budget (default=64)");
41 static unsigned int rx_weight = 64;
42 module_param(rx_weight, uint, 0644);
43 MODULE_PARM_DESC(rx_weight, "Number Rx packets for NAPI budget (default=64)");
45 #define HINIC_DEV_ID_QUAD_PORT_25GE 0x1822
46 #define HINIC_DEV_ID_DUAL_PORT_100GE 0x0200
47 #define HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ 0x0205
48 #define HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ 0x0210
50 #define HINIC_WQ_NAME "hinic_dev"
52 #define MSG_ENABLE_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | \
54 NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR)
56 #define HINIC_LRO_MAX_WQE_NUM_DEFAULT 8
58 #define HINIC_LRO_RX_TIMER_DEFAULT 16
60 #define VLAN_BITMAP_SIZE(nic_dev) (ALIGN(VLAN_N_VID, 8) / 8)
62 #define work_to_rx_mode_work(work) \
63 container_of(work, struct hinic_rx_mode_work, work)
65 #define rx_mode_work_to_nic_dev(rx_mode_work) \
66 container_of(rx_mode_work, struct hinic_dev, rx_mode_work)
68 static int change_mac_addr(struct net_device *netdev, const u8 *addr);
70 static int set_features(struct hinic_dev *nic_dev,
71 netdev_features_t pre_features,
72 netdev_features_t features, bool force_change);
74 static void update_rx_stats(struct hinic_dev *nic_dev, struct hinic_rxq *rxq)
76 struct hinic_rxq_stats *nic_rx_stats = &nic_dev->rx_stats;
77 struct hinic_rxq_stats rx_stats;
79 u64_stats_init(&rx_stats.syncp);
81 hinic_rxq_get_stats(rxq, &rx_stats);
83 u64_stats_update_begin(&nic_rx_stats->syncp);
84 nic_rx_stats->bytes += rx_stats.bytes;
85 nic_rx_stats->pkts += rx_stats.pkts;
86 nic_rx_stats->errors += rx_stats.errors;
87 nic_rx_stats->csum_errors += rx_stats.csum_errors;
88 nic_rx_stats->other_errors += rx_stats.other_errors;
89 u64_stats_update_end(&nic_rx_stats->syncp);
91 hinic_rxq_clean_stats(rxq);
94 static void update_tx_stats(struct hinic_dev *nic_dev, struct hinic_txq *txq)
96 struct hinic_txq_stats *nic_tx_stats = &nic_dev->tx_stats;
97 struct hinic_txq_stats tx_stats;
99 u64_stats_init(&tx_stats.syncp);
101 hinic_txq_get_stats(txq, &tx_stats);
103 u64_stats_update_begin(&nic_tx_stats->syncp);
104 nic_tx_stats->bytes += tx_stats.bytes;
105 nic_tx_stats->pkts += tx_stats.pkts;
106 nic_tx_stats->tx_busy += tx_stats.tx_busy;
107 nic_tx_stats->tx_wake += tx_stats.tx_wake;
108 nic_tx_stats->tx_dropped += tx_stats.tx_dropped;
109 nic_tx_stats->big_frags_pkts += tx_stats.big_frags_pkts;
110 u64_stats_update_end(&nic_tx_stats->syncp);
112 hinic_txq_clean_stats(txq);
115 static void update_nic_stats(struct hinic_dev *nic_dev)
117 int i, num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
119 for (i = 0; i < num_qps; i++)
120 update_rx_stats(nic_dev, &nic_dev->rxqs[i]);
122 for (i = 0; i < num_qps; i++)
123 update_tx_stats(nic_dev, &nic_dev->txqs[i]);
127 * create_txqs - Create the Logical Tx Queues of specific NIC device
128 * @nic_dev: the specific NIC device
130 * Return 0 - Success, negative - Failure
132 static int create_txqs(struct hinic_dev *nic_dev)
134 int err, i, j, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
135 struct net_device *netdev = nic_dev->netdev;
141 txq_size = num_txqs * sizeof(*nic_dev->txqs);
142 nic_dev->txqs = devm_kzalloc(&netdev->dev, txq_size, GFP_KERNEL);
146 for (i = 0; i < num_txqs; i++) {
147 struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i);
149 err = hinic_init_txq(&nic_dev->txqs[i], sq, netdev);
151 netif_err(nic_dev, drv, netdev,
152 "Failed to init Txq\n");
160 for (j = 0; j < i; j++)
161 hinic_clean_txq(&nic_dev->txqs[j]);
163 devm_kfree(&netdev->dev, nic_dev->txqs);
168 * free_txqs - Free the Logical Tx Queues of specific NIC device
169 * @nic_dev: the specific NIC device
171 static void free_txqs(struct hinic_dev *nic_dev)
173 int i, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
174 struct net_device *netdev = nic_dev->netdev;
179 for (i = 0; i < num_txqs; i++)
180 hinic_clean_txq(&nic_dev->txqs[i]);
182 devm_kfree(&netdev->dev, nic_dev->txqs);
183 nic_dev->txqs = NULL;
187 * create_txqs - Create the Logical Rx Queues of specific NIC device
188 * @nic_dev: the specific NIC device
190 * Return 0 - Success, negative - Failure
192 static int create_rxqs(struct hinic_dev *nic_dev)
194 int err, i, j, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
195 struct net_device *netdev = nic_dev->netdev;
201 rxq_size = num_rxqs * sizeof(*nic_dev->rxqs);
202 nic_dev->rxqs = devm_kzalloc(&netdev->dev, rxq_size, GFP_KERNEL);
206 for (i = 0; i < num_rxqs; i++) {
207 struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i);
209 err = hinic_init_rxq(&nic_dev->rxqs[i], rq, netdev);
211 netif_err(nic_dev, drv, netdev,
212 "Failed to init rxq\n");
220 for (j = 0; j < i; j++)
221 hinic_clean_rxq(&nic_dev->rxqs[j]);
223 devm_kfree(&netdev->dev, nic_dev->rxqs);
228 * free_txqs - Free the Logical Rx Queues of specific NIC device
229 * @nic_dev: the specific NIC device
231 static void free_rxqs(struct hinic_dev *nic_dev)
233 int i, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
234 struct net_device *netdev = nic_dev->netdev;
239 for (i = 0; i < num_rxqs; i++)
240 hinic_clean_rxq(&nic_dev->rxqs[i]);
242 devm_kfree(&netdev->dev, nic_dev->rxqs);
243 nic_dev->rxqs = NULL;
246 static int hinic_configure_max_qnum(struct hinic_dev *nic_dev)
250 err = hinic_set_max_qnum(nic_dev, nic_dev->hwdev->nic_cap.max_qps);
257 static int hinic_rss_init(struct hinic_dev *nic_dev)
259 u8 default_rss_key[HINIC_RSS_KEY_SIZE];
260 u8 tmpl_idx = nic_dev->rss_tmpl_idx;
264 indir_tbl = kcalloc(HINIC_RSS_INDIR_SIZE, sizeof(u32), GFP_KERNEL);
268 netdev_rss_key_fill(default_rss_key, sizeof(default_rss_key));
269 for (i = 0; i < HINIC_RSS_INDIR_SIZE; i++)
270 indir_tbl[i] = ethtool_rxfh_indir_default(i, nic_dev->num_rss);
272 err = hinic_rss_set_template_tbl(nic_dev, tmpl_idx, default_rss_key);
276 err = hinic_rss_set_indir_tbl(nic_dev, tmpl_idx, indir_tbl);
280 err = hinic_set_rss_type(nic_dev, tmpl_idx, nic_dev->rss_type);
284 err = hinic_rss_set_hash_engine(nic_dev, tmpl_idx,
285 nic_dev->rss_hash_engine);
289 err = hinic_rss_cfg(nic_dev, 1, tmpl_idx);
298 static void hinic_rss_deinit(struct hinic_dev *nic_dev)
300 hinic_rss_cfg(nic_dev, 0, nic_dev->rss_tmpl_idx);
303 static void hinic_init_rss_parameters(struct hinic_dev *nic_dev)
305 nic_dev->rss_hash_engine = HINIC_RSS_HASH_ENGINE_TYPE_XOR;
306 nic_dev->rss_type.tcp_ipv6_ext = 1;
307 nic_dev->rss_type.ipv6_ext = 1;
308 nic_dev->rss_type.tcp_ipv6 = 1;
309 nic_dev->rss_type.ipv6 = 1;
310 nic_dev->rss_type.tcp_ipv4 = 1;
311 nic_dev->rss_type.ipv4 = 1;
312 nic_dev->rss_type.udp_ipv6 = 1;
313 nic_dev->rss_type.udp_ipv4 = 1;
316 static void hinic_enable_rss(struct hinic_dev *nic_dev)
318 struct net_device *netdev = nic_dev->netdev;
319 struct hinic_hwdev *hwdev = nic_dev->hwdev;
320 struct hinic_hwif *hwif = hwdev->hwif;
321 struct pci_dev *pdev = hwif->pdev;
322 int i, node, err = 0;
325 nic_dev->max_qps = hinic_hwdev_max_num_qps(hwdev);
326 if (nic_dev->max_qps <= 1) {
327 nic_dev->flags &= ~HINIC_RSS_ENABLE;
328 nic_dev->rss_limit = nic_dev->max_qps;
329 nic_dev->num_qps = nic_dev->max_qps;
330 nic_dev->num_rss = nic_dev->max_qps;
335 err = hinic_rss_template_alloc(nic_dev, &nic_dev->rss_tmpl_idx);
337 netif_err(nic_dev, drv, netdev,
338 "Failed to alloc tmpl_idx for rss, can't enable rss for this function\n");
339 nic_dev->flags &= ~HINIC_RSS_ENABLE;
340 nic_dev->max_qps = 1;
341 nic_dev->rss_limit = nic_dev->max_qps;
342 nic_dev->num_qps = nic_dev->max_qps;
343 nic_dev->num_rss = nic_dev->max_qps;
348 nic_dev->flags |= HINIC_RSS_ENABLE;
350 for (i = 0; i < num_online_cpus(); i++) {
351 node = cpu_to_node(i);
352 if (node == dev_to_node(&pdev->dev))
357 num_cpus = num_online_cpus();
359 nic_dev->num_qps = hinic_hwdev_num_qps(hwdev);
360 nic_dev->num_qps = min_t(u16, nic_dev->num_qps, num_cpus);
362 nic_dev->rss_limit = nic_dev->num_qps;
363 nic_dev->num_rss = nic_dev->num_qps;
365 hinic_init_rss_parameters(nic_dev);
366 err = hinic_rss_init(nic_dev);
368 netif_err(nic_dev, drv, netdev, "Failed to init rss\n");
371 static int hinic_open(struct net_device *netdev)
373 struct hinic_dev *nic_dev = netdev_priv(netdev);
374 enum hinic_port_link_state link_state;
377 if (!(nic_dev->flags & HINIC_INTF_UP)) {
378 err = hinic_hwdev_ifup(nic_dev->hwdev);
380 netif_err(nic_dev, drv, netdev,
381 "Failed - HW interface up\n");
386 err = create_txqs(nic_dev);
388 netif_err(nic_dev, drv, netdev,
389 "Failed to create Tx queues\n");
390 goto err_create_txqs;
393 err = create_rxqs(nic_dev);
395 netif_err(nic_dev, drv, netdev,
396 "Failed to create Rx queues\n");
397 goto err_create_rxqs;
400 hinic_enable_rss(nic_dev);
402 err = hinic_configure_max_qnum(nic_dev);
404 netif_err(nic_dev, drv, nic_dev->netdev,
405 "Failed to configure the maximum number of queues\n");
409 netif_set_real_num_tx_queues(netdev, nic_dev->num_qps);
410 netif_set_real_num_rx_queues(netdev, nic_dev->num_qps);
412 err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE);
414 netif_err(nic_dev, drv, netdev,
415 "Failed to set port state\n");
419 err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE);
421 netif_err(nic_dev, drv, netdev,
422 "Failed to set func port state\n");
423 goto err_func_port_state;
426 /* Wait up to 3 sec between port enable to link state */
429 down(&nic_dev->mgmt_lock);
431 err = hinic_port_link_state(nic_dev, &link_state);
433 netif_err(nic_dev, drv, netdev, "Failed to get link state\n");
437 if (link_state == HINIC_LINK_STATE_UP)
438 nic_dev->flags |= HINIC_LINK_UP;
440 nic_dev->flags |= HINIC_INTF_UP;
442 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
443 (HINIC_LINK_UP | HINIC_INTF_UP)) {
444 netif_info(nic_dev, drv, netdev, "link + intf UP\n");
445 netif_carrier_on(netdev);
446 netif_tx_wake_all_queues(netdev);
449 up(&nic_dev->mgmt_lock);
451 netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n");
455 up(&nic_dev->mgmt_lock);
456 ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
458 netif_warn(nic_dev, drv, netdev,
459 "Failed to revert func port state\n");
462 ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
464 netif_warn(nic_dev, drv, netdev,
465 "Failed to revert port state\n");
468 if (nic_dev->flags & HINIC_RSS_ENABLE) {
469 hinic_rss_deinit(nic_dev);
470 hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx);
477 if (!(nic_dev->flags & HINIC_INTF_UP))
478 hinic_hwdev_ifdown(nic_dev->hwdev);
482 static int hinic_close(struct net_device *netdev)
484 struct hinic_dev *nic_dev = netdev_priv(netdev);
488 down(&nic_dev->mgmt_lock);
490 flags = nic_dev->flags;
491 nic_dev->flags &= ~HINIC_INTF_UP;
493 netif_carrier_off(netdev);
494 netif_tx_disable(netdev);
496 update_nic_stats(nic_dev);
498 up(&nic_dev->mgmt_lock);
500 err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
502 netif_err(nic_dev, drv, netdev,
503 "Failed to set func port state\n");
504 nic_dev->flags |= (flags & HINIC_INTF_UP);
508 err = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
510 netif_err(nic_dev, drv, netdev, "Failed to set port state\n");
511 nic_dev->flags |= (flags & HINIC_INTF_UP);
515 if (nic_dev->flags & HINIC_RSS_ENABLE) {
516 hinic_rss_deinit(nic_dev);
517 hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx);
523 if (flags & HINIC_INTF_UP)
524 hinic_hwdev_ifdown(nic_dev->hwdev);
526 netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n");
530 static int hinic_change_mtu(struct net_device *netdev, int new_mtu)
532 struct hinic_dev *nic_dev = netdev_priv(netdev);
535 netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu);
537 err = hinic_port_set_mtu(nic_dev, new_mtu);
539 netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n");
541 netdev->mtu = new_mtu;
547 * change_mac_addr - change the main mac address of network device
548 * @netdev: network device
549 * @addr: mac address to set
551 * Return 0 - Success, negative - Failure
553 static int change_mac_addr(struct net_device *netdev, const u8 *addr)
555 struct hinic_dev *nic_dev = netdev_priv(netdev);
559 if (!is_valid_ether_addr(addr))
560 return -EADDRNOTAVAIL;
562 netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n",
563 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
565 down(&nic_dev->mgmt_lock);
568 err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid);
570 netif_err(nic_dev, drv, netdev,
571 "Failed to delete mac\n");
575 err = hinic_port_add_mac(nic_dev, addr, vid);
577 netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
581 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
582 } while (vid != VLAN_N_VID);
584 up(&nic_dev->mgmt_lock);
588 static int hinic_set_mac_addr(struct net_device *netdev, void *addr)
590 unsigned char new_mac[ETH_ALEN];
591 struct sockaddr *saddr = addr;
594 memcpy(new_mac, saddr->sa_data, ETH_ALEN);
596 err = change_mac_addr(netdev, new_mac);
598 memcpy(netdev->dev_addr, new_mac, ETH_ALEN);
604 * add_mac_addr - add mac address to network device
605 * @netdev: network device
606 * @addr: mac address to add
608 * Return 0 - Success, negative - Failure
610 static int add_mac_addr(struct net_device *netdev, const u8 *addr)
612 struct hinic_dev *nic_dev = netdev_priv(netdev);
616 netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n",
617 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
619 down(&nic_dev->mgmt_lock);
622 err = hinic_port_add_mac(nic_dev, addr, vid);
624 netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
628 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
629 } while (vid != VLAN_N_VID);
631 up(&nic_dev->mgmt_lock);
636 * remove_mac_addr - remove mac address from network device
637 * @netdev: network device
638 * @addr: mac address to remove
640 * Return 0 - Success, negative - Failure
642 static int remove_mac_addr(struct net_device *netdev, const u8 *addr)
644 struct hinic_dev *nic_dev = netdev_priv(netdev);
648 if (!is_valid_ether_addr(addr))
649 return -EADDRNOTAVAIL;
651 netif_info(nic_dev, drv, netdev, "remove mac addr = %02x %02x %02x %02x %02x %02x\n",
652 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
654 down(&nic_dev->mgmt_lock);
657 err = hinic_port_del_mac(nic_dev, addr, vid);
659 netif_err(nic_dev, drv, netdev,
660 "Failed to delete mac\n");
664 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
665 } while (vid != VLAN_N_VID);
667 up(&nic_dev->mgmt_lock);
671 static int hinic_vlan_rx_add_vid(struct net_device *netdev,
672 __always_unused __be16 proto, u16 vid)
674 struct hinic_dev *nic_dev = netdev_priv(netdev);
677 netif_info(nic_dev, drv, netdev, "add vid = %d\n", vid);
679 down(&nic_dev->mgmt_lock);
681 err = hinic_port_add_vlan(nic_dev, vid);
683 netif_err(nic_dev, drv, netdev, "Failed to add vlan\n");
687 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, vid);
689 netif_err(nic_dev, drv, netdev, "Failed to set mac\n");
693 bitmap_set(nic_dev->vlan_bitmap, vid, 1);
695 up(&nic_dev->mgmt_lock);
699 ret = hinic_port_del_vlan(nic_dev, vid);
701 netif_err(nic_dev, drv, netdev,
702 "Failed to revert by removing vlan\n");
705 up(&nic_dev->mgmt_lock);
709 static int hinic_vlan_rx_kill_vid(struct net_device *netdev,
710 __always_unused __be16 proto, u16 vid)
712 struct hinic_dev *nic_dev = netdev_priv(netdev);
715 netif_info(nic_dev, drv, netdev, "remove vid = %d\n", vid);
717 down(&nic_dev->mgmt_lock);
719 err = hinic_port_del_vlan(nic_dev, vid);
721 netif_err(nic_dev, drv, netdev, "Failed to delete vlan\n");
725 bitmap_clear(nic_dev->vlan_bitmap, vid, 1);
727 up(&nic_dev->mgmt_lock);
731 up(&nic_dev->mgmt_lock);
735 static void set_rx_mode(struct work_struct *work)
737 struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work);
738 struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work);
740 netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n");
742 hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode);
744 __dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
745 __dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
748 static void hinic_set_rx_mode(struct net_device *netdev)
750 struct hinic_dev *nic_dev = netdev_priv(netdev);
751 struct hinic_rx_mode_work *rx_mode_work;
754 rx_mode_work = &nic_dev->rx_mode_work;
756 rx_mode = HINIC_RX_MODE_UC |
760 if (netdev->flags & IFF_PROMISC)
761 rx_mode |= HINIC_RX_MODE_PROMISC;
762 else if (netdev->flags & IFF_ALLMULTI)
763 rx_mode |= HINIC_RX_MODE_MC_ALL;
765 rx_mode_work->rx_mode = rx_mode;
767 queue_work(nic_dev->workq, &rx_mode_work->work);
770 static void hinic_tx_timeout(struct net_device *netdev, unsigned int txqueue)
772 struct hinic_dev *nic_dev = netdev_priv(netdev);
774 netif_err(nic_dev, drv, netdev, "Tx timeout\n");
777 static void hinic_get_stats64(struct net_device *netdev,
778 struct rtnl_link_stats64 *stats)
780 struct hinic_dev *nic_dev = netdev_priv(netdev);
781 struct hinic_rxq_stats *nic_rx_stats;
782 struct hinic_txq_stats *nic_tx_stats;
784 nic_rx_stats = &nic_dev->rx_stats;
785 nic_tx_stats = &nic_dev->tx_stats;
787 down(&nic_dev->mgmt_lock);
789 if (nic_dev->flags & HINIC_INTF_UP)
790 update_nic_stats(nic_dev);
792 up(&nic_dev->mgmt_lock);
794 stats->rx_bytes = nic_rx_stats->bytes;
795 stats->rx_packets = nic_rx_stats->pkts;
796 stats->rx_errors = nic_rx_stats->errors;
798 stats->tx_bytes = nic_tx_stats->bytes;
799 stats->tx_packets = nic_tx_stats->pkts;
800 stats->tx_errors = nic_tx_stats->tx_dropped;
803 static int hinic_set_features(struct net_device *netdev,
804 netdev_features_t features)
806 struct hinic_dev *nic_dev = netdev_priv(netdev);
808 return set_features(nic_dev, nic_dev->netdev->features,
812 static netdev_features_t hinic_fix_features(struct net_device *netdev,
813 netdev_features_t features)
815 struct hinic_dev *nic_dev = netdev_priv(netdev);
817 /* If Rx checksum is disabled, then LRO should also be disabled */
818 if (!(features & NETIF_F_RXCSUM)) {
819 netif_info(nic_dev, drv, netdev, "disabling LRO as RXCSUM is off\n");
820 features &= ~NETIF_F_LRO;
826 static const struct net_device_ops hinic_netdev_ops = {
827 .ndo_open = hinic_open,
828 .ndo_stop = hinic_close,
829 .ndo_change_mtu = hinic_change_mtu,
830 .ndo_set_mac_address = hinic_set_mac_addr,
831 .ndo_validate_addr = eth_validate_addr,
832 .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid,
833 .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid,
834 .ndo_set_rx_mode = hinic_set_rx_mode,
835 .ndo_start_xmit = hinic_xmit_frame,
836 .ndo_tx_timeout = hinic_tx_timeout,
837 .ndo_get_stats64 = hinic_get_stats64,
838 .ndo_fix_features = hinic_fix_features,
839 .ndo_set_features = hinic_set_features,
842 static void netdev_features_init(struct net_device *netdev)
844 netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM |
845 NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
846 NETIF_F_RXCSUM | NETIF_F_LRO |
847 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
849 netdev->vlan_features = netdev->hw_features;
851 netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
855 * link_status_event_handler - link event handler
856 * @handle: nic device for the handler
857 * @buf_in: input buffer
858 * @in_size: input size
859 * @buf_in: output buffer
860 * @out_size: returned output size
862 * Return 0 - Success, negative - Failure
864 static void link_status_event_handler(void *handle, void *buf_in, u16 in_size,
865 void *buf_out, u16 *out_size)
867 struct hinic_port_link_status *link_status, *ret_link_status;
868 struct hinic_dev *nic_dev = handle;
870 link_status = buf_in;
872 if (link_status->link == HINIC_LINK_STATE_UP) {
873 down(&nic_dev->mgmt_lock);
875 nic_dev->flags |= HINIC_LINK_UP;
877 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
878 (HINIC_LINK_UP | HINIC_INTF_UP)) {
879 netif_carrier_on(nic_dev->netdev);
880 netif_tx_wake_all_queues(nic_dev->netdev);
883 up(&nic_dev->mgmt_lock);
885 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is UP\n");
887 down(&nic_dev->mgmt_lock);
889 nic_dev->flags &= ~HINIC_LINK_UP;
891 netif_carrier_off(nic_dev->netdev);
892 netif_tx_disable(nic_dev->netdev);
894 up(&nic_dev->mgmt_lock);
896 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is DOWN\n");
899 ret_link_status = buf_out;
900 ret_link_status->status = 0;
902 *out_size = sizeof(*ret_link_status);
905 static int set_features(struct hinic_dev *nic_dev,
906 netdev_features_t pre_features,
907 netdev_features_t features, bool force_change)
909 netdev_features_t changed = force_change ? ~0 : pre_features ^ features;
910 u32 csum_en = HINIC_RX_CSUM_OFFLOAD_EN;
913 if (changed & NETIF_F_TSO)
914 err = hinic_port_set_tso(nic_dev, (features & NETIF_F_TSO) ?
915 HINIC_TSO_ENABLE : HINIC_TSO_DISABLE);
917 if (changed & NETIF_F_RXCSUM)
918 err = hinic_set_rx_csum_offload(nic_dev, csum_en);
920 if (changed & NETIF_F_LRO) {
921 err = hinic_set_rx_lro_state(nic_dev,
922 !!(features & NETIF_F_LRO),
923 HINIC_LRO_RX_TIMER_DEFAULT,
924 HINIC_LRO_MAX_WQE_NUM_DEFAULT);
927 if (changed & NETIF_F_HW_VLAN_CTAG_RX)
928 err = hinic_set_rx_vlan_offload(nic_dev,
930 NETIF_F_HW_VLAN_CTAG_RX));
936 * nic_dev_init - Initialize the NIC device
937 * @pdev: the NIC pci device
939 * Return 0 - Success, negative - Failure
941 static int nic_dev_init(struct pci_dev *pdev)
943 struct hinic_rx_mode_work *rx_mode_work;
944 struct hinic_txq_stats *tx_stats;
945 struct hinic_rxq_stats *rx_stats;
946 struct hinic_dev *nic_dev;
947 struct net_device *netdev;
948 struct hinic_hwdev *hwdev;
951 hwdev = hinic_init_hwdev(pdev);
953 dev_err(&pdev->dev, "Failed to initialize HW device\n");
954 return PTR_ERR(hwdev);
957 num_qps = hinic_hwdev_num_qps(hwdev);
959 dev_err(&pdev->dev, "Invalid number of QPS\n");
964 netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps);
966 dev_err(&pdev->dev, "Failed to allocate Ethernet device\n");
968 goto err_alloc_etherdev;
971 hinic_set_ethtool_ops(netdev);
972 netdev->netdev_ops = &hinic_netdev_ops;
973 netdev->max_mtu = ETH_MAX_MTU;
975 nic_dev = netdev_priv(netdev);
976 nic_dev->netdev = netdev;
977 nic_dev->hwdev = hwdev;
978 nic_dev->msg_enable = MSG_ENABLE_DEFAULT;
980 nic_dev->txqs = NULL;
981 nic_dev->rxqs = NULL;
982 nic_dev->tx_weight = tx_weight;
983 nic_dev->rx_weight = rx_weight;
985 sema_init(&nic_dev->mgmt_lock, 1);
987 tx_stats = &nic_dev->tx_stats;
988 rx_stats = &nic_dev->rx_stats;
990 u64_stats_init(&tx_stats->syncp);
991 u64_stats_init(&rx_stats->syncp);
993 nic_dev->vlan_bitmap = devm_kzalloc(&pdev->dev,
994 VLAN_BITMAP_SIZE(nic_dev),
996 if (!nic_dev->vlan_bitmap) {
998 goto err_vlan_bitmap;
1001 nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME);
1002 if (!nic_dev->workq) {
1007 pci_set_drvdata(pdev, netdev);
1009 err = hinic_port_get_mac(nic_dev, netdev->dev_addr);
1011 dev_warn(&pdev->dev, "Failed to get mac address\n");
1013 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0);
1015 dev_err(&pdev->dev, "Failed to add mac\n");
1019 err = hinic_port_set_mtu(nic_dev, netdev->mtu);
1021 dev_err(&pdev->dev, "Failed to set mtu\n");
1025 rx_mode_work = &nic_dev->rx_mode_work;
1026 INIT_WORK(&rx_mode_work->work, set_rx_mode);
1028 netdev_features_init(netdev);
1030 netif_carrier_off(netdev);
1032 hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS,
1033 nic_dev, link_status_event_handler);
1035 err = set_features(nic_dev, 0, nic_dev->netdev->features, true);
1037 goto err_set_features;
1039 SET_NETDEV_DEV(netdev, &pdev->dev);
1041 err = register_netdev(netdev);
1043 dev_err(&pdev->dev, "Failed to register netdev\n");
1044 goto err_reg_netdev;
1051 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1052 HINIC_MGMT_MSG_CMD_LINK_STATUS);
1053 cancel_work_sync(&rx_mode_work->work);
1057 pci_set_drvdata(pdev, NULL);
1058 destroy_workqueue(nic_dev->workq);
1062 free_netdev(netdev);
1066 hinic_free_hwdev(hwdev);
1070 static int hinic_probe(struct pci_dev *pdev,
1071 const struct pci_device_id *id)
1073 int err = pci_enable_device(pdev);
1076 dev_err(&pdev->dev, "Failed to enable PCI device\n");
1080 err = pci_request_regions(pdev, HINIC_DRV_NAME);
1082 dev_err(&pdev->dev, "Failed to request PCI regions\n");
1083 goto err_pci_regions;
1086 pci_set_master(pdev);
1088 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1090 dev_warn(&pdev->dev, "Couldn't set 64-bit DMA mask\n");
1091 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1093 dev_err(&pdev->dev, "Failed to set DMA mask\n");
1098 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1100 dev_warn(&pdev->dev,
1101 "Couldn't set 64-bit consistent DMA mask\n");
1102 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1105 "Failed to set consistent DMA mask\n");
1106 goto err_dma_consistent_mask;
1110 err = nic_dev_init(pdev);
1112 dev_err(&pdev->dev, "Failed to initialize NIC device\n");
1113 goto err_nic_dev_init;
1116 dev_info(&pdev->dev, "HiNIC driver - probed\n");
1120 err_dma_consistent_mask:
1122 pci_release_regions(pdev);
1125 pci_disable_device(pdev);
1129 static void hinic_remove(struct pci_dev *pdev)
1131 struct net_device *netdev = pci_get_drvdata(pdev);
1132 struct hinic_dev *nic_dev = netdev_priv(netdev);
1133 struct hinic_rx_mode_work *rx_mode_work;
1135 unregister_netdev(netdev);
1137 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1138 HINIC_MGMT_MSG_CMD_LINK_STATUS);
1140 rx_mode_work = &nic_dev->rx_mode_work;
1141 cancel_work_sync(&rx_mode_work->work);
1143 pci_set_drvdata(pdev, NULL);
1145 destroy_workqueue(nic_dev->workq);
1147 hinic_free_hwdev(nic_dev->hwdev);
1149 free_netdev(netdev);
1151 pci_release_regions(pdev);
1152 pci_disable_device(pdev);
1154 dev_info(&pdev->dev, "HiNIC driver - removed\n");
1157 static void hinic_shutdown(struct pci_dev *pdev)
1159 pci_disable_device(pdev);
1162 static const struct pci_device_id hinic_pci_table[] = {
1163 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE), 0},
1164 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE), 0},
1165 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ), 0},
1166 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ), 0},
1169 MODULE_DEVICE_TABLE(pci, hinic_pci_table);
1171 static struct pci_driver hinic_driver = {
1172 .name = HINIC_DRV_NAME,
1173 .id_table = hinic_pci_table,
1174 .probe = hinic_probe,
1175 .remove = hinic_remove,
1176 .shutdown = hinic_shutdown,
1179 module_pci_driver(hinic_driver);