2 * Huawei HiNIC PCI Express Linux driver
3 * Copyright(c) 2017 Huawei Technologies Co., Ltd
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/moduleparam.h>
19 #include <linux/pci.h>
20 #include <linux/device.h>
21 #include <linux/errno.h>
22 #include <linux/types.h>
23 #include <linux/etherdevice.h>
24 #include <linux/netdevice.h>
25 #include <linux/slab.h>
26 #include <linux/if_vlan.h>
27 #include <linux/semaphore.h>
28 #include <linux/workqueue.h>
30 #include <linux/bitops.h>
31 #include <linux/bitmap.h>
32 #include <linux/delay.h>
33 #include <linux/err.h>
35 #include "hinic_hw_qp.h"
36 #include "hinic_hw_dev.h"
37 #include "hinic_port.h"
40 #include "hinic_dev.h"
42 MODULE_AUTHOR("Huawei Technologies CO., Ltd");
43 MODULE_DESCRIPTION("Huawei Intelligent NIC driver");
44 MODULE_LICENSE("GPL");
46 static unsigned int tx_weight = 64;
47 module_param(tx_weight, uint, 0644);
48 MODULE_PARM_DESC(tx_weight, "Number Tx packets for NAPI budget (default=64)");
50 static unsigned int rx_weight = 64;
51 module_param(rx_weight, uint, 0644);
52 MODULE_PARM_DESC(rx_weight, "Number Rx packets for NAPI budget (default=64)");
54 #define HINIC_DEV_ID_QUAD_PORT_25GE 0x1822
55 #define HINIC_DEV_ID_DUAL_PORT_100GE 0x0200
56 #define HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ 0x0205
57 #define HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ 0x0210
59 #define HINIC_WQ_NAME "hinic_dev"
61 #define MSG_ENABLE_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | \
63 NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR)
65 #define VLAN_BITMAP_SIZE(nic_dev) (ALIGN(VLAN_N_VID, 8) / 8)
67 #define work_to_rx_mode_work(work) \
68 container_of(work, struct hinic_rx_mode_work, work)
70 #define rx_mode_work_to_nic_dev(rx_mode_work) \
71 container_of(rx_mode_work, struct hinic_dev, rx_mode_work)
73 static int change_mac_addr(struct net_device *netdev, const u8 *addr);
75 static void set_link_speed(struct ethtool_link_ksettings *link_ksettings,
76 enum hinic_speed speed)
79 case HINIC_SPEED_10MB_LINK:
80 link_ksettings->base.speed = SPEED_10;
83 case HINIC_SPEED_100MB_LINK:
84 link_ksettings->base.speed = SPEED_100;
87 case HINIC_SPEED_1000MB_LINK:
88 link_ksettings->base.speed = SPEED_1000;
91 case HINIC_SPEED_10GB_LINK:
92 link_ksettings->base.speed = SPEED_10000;
95 case HINIC_SPEED_25GB_LINK:
96 link_ksettings->base.speed = SPEED_25000;
99 case HINIC_SPEED_40GB_LINK:
100 link_ksettings->base.speed = SPEED_40000;
103 case HINIC_SPEED_100GB_LINK:
104 link_ksettings->base.speed = SPEED_100000;
108 link_ksettings->base.speed = SPEED_UNKNOWN;
113 static int hinic_get_link_ksettings(struct net_device *netdev,
114 struct ethtool_link_ksettings
117 struct hinic_dev *nic_dev = netdev_priv(netdev);
118 enum hinic_port_link_state link_state;
119 struct hinic_port_cap port_cap;
122 ethtool_link_ksettings_zero_link_mode(link_ksettings, advertising);
123 ethtool_link_ksettings_add_link_mode(link_ksettings, supported,
126 link_ksettings->base.speed = SPEED_UNKNOWN;
127 link_ksettings->base.autoneg = AUTONEG_DISABLE;
128 link_ksettings->base.duplex = DUPLEX_UNKNOWN;
130 err = hinic_port_get_cap(nic_dev, &port_cap);
132 netif_err(nic_dev, drv, netdev,
133 "Failed to get port capabilities\n");
137 err = hinic_port_link_state(nic_dev, &link_state);
139 netif_err(nic_dev, drv, netdev,
140 "Failed to get port link state\n");
144 if (link_state != HINIC_LINK_STATE_UP) {
145 netif_info(nic_dev, drv, netdev, "No link\n");
149 set_link_speed(link_ksettings, port_cap.speed);
151 if (!!(port_cap.autoneg_cap & HINIC_AUTONEG_SUPPORTED))
152 ethtool_link_ksettings_add_link_mode(link_ksettings,
153 advertising, Autoneg);
155 if (port_cap.autoneg_state == HINIC_AUTONEG_ACTIVE)
156 link_ksettings->base.autoneg = AUTONEG_ENABLE;
158 link_ksettings->base.duplex = (port_cap.duplex == HINIC_DUPLEX_FULL) ?
159 DUPLEX_FULL : DUPLEX_HALF;
163 static void hinic_get_drvinfo(struct net_device *netdev,
164 struct ethtool_drvinfo *info)
166 struct hinic_dev *nic_dev = netdev_priv(netdev);
167 struct hinic_hwdev *hwdev = nic_dev->hwdev;
168 struct hinic_hwif *hwif = hwdev->hwif;
170 strlcpy(info->driver, HINIC_DRV_NAME, sizeof(info->driver));
171 strlcpy(info->bus_info, pci_name(hwif->pdev), sizeof(info->bus_info));
174 static void hinic_get_ringparam(struct net_device *netdev,
175 struct ethtool_ringparam *ring)
177 ring->rx_max_pending = HINIC_RQ_DEPTH;
178 ring->tx_max_pending = HINIC_SQ_DEPTH;
179 ring->rx_pending = HINIC_RQ_DEPTH;
180 ring->tx_pending = HINIC_SQ_DEPTH;
183 static void hinic_get_channels(struct net_device *netdev,
184 struct ethtool_channels *channels)
186 struct hinic_dev *nic_dev = netdev_priv(netdev);
187 struct hinic_hwdev *hwdev = nic_dev->hwdev;
189 channels->max_rx = hwdev->nic_cap.max_qps;
190 channels->max_tx = hwdev->nic_cap.max_qps;
191 channels->max_other = 0;
192 channels->max_combined = 0;
193 channels->rx_count = hinic_hwdev_num_qps(hwdev);
194 channels->tx_count = hinic_hwdev_num_qps(hwdev);
195 channels->other_count = 0;
196 channels->combined_count = 0;
199 static const struct ethtool_ops hinic_ethtool_ops = {
200 .get_link_ksettings = hinic_get_link_ksettings,
201 .get_drvinfo = hinic_get_drvinfo,
202 .get_link = ethtool_op_get_link,
203 .get_ringparam = hinic_get_ringparam,
204 .get_channels = hinic_get_channels,
207 static void update_rx_stats(struct hinic_dev *nic_dev, struct hinic_rxq *rxq)
209 struct hinic_rxq_stats *nic_rx_stats = &nic_dev->rx_stats;
210 struct hinic_rxq_stats rx_stats;
212 u64_stats_init(&rx_stats.syncp);
214 hinic_rxq_get_stats(rxq, &rx_stats);
216 u64_stats_update_begin(&nic_rx_stats->syncp);
217 nic_rx_stats->bytes += rx_stats.bytes;
218 nic_rx_stats->pkts += rx_stats.pkts;
219 u64_stats_update_end(&nic_rx_stats->syncp);
221 hinic_rxq_clean_stats(rxq);
224 static void update_tx_stats(struct hinic_dev *nic_dev, struct hinic_txq *txq)
226 struct hinic_txq_stats *nic_tx_stats = &nic_dev->tx_stats;
227 struct hinic_txq_stats tx_stats;
229 u64_stats_init(&tx_stats.syncp);
231 hinic_txq_get_stats(txq, &tx_stats);
233 u64_stats_update_begin(&nic_tx_stats->syncp);
234 nic_tx_stats->bytes += tx_stats.bytes;
235 nic_tx_stats->pkts += tx_stats.pkts;
236 nic_tx_stats->tx_busy += tx_stats.tx_busy;
237 nic_tx_stats->tx_wake += tx_stats.tx_wake;
238 nic_tx_stats->tx_dropped += tx_stats.tx_dropped;
239 u64_stats_update_end(&nic_tx_stats->syncp);
241 hinic_txq_clean_stats(txq);
244 static void update_nic_stats(struct hinic_dev *nic_dev)
246 int i, num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
248 for (i = 0; i < num_qps; i++)
249 update_rx_stats(nic_dev, &nic_dev->rxqs[i]);
251 for (i = 0; i < num_qps; i++)
252 update_tx_stats(nic_dev, &nic_dev->txqs[i]);
256 * create_txqs - Create the Logical Tx Queues of specific NIC device
257 * @nic_dev: the specific NIC device
259 * Return 0 - Success, negative - Failure
261 static int create_txqs(struct hinic_dev *nic_dev)
263 int err, i, j, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
264 struct net_device *netdev = nic_dev->netdev;
270 txq_size = num_txqs * sizeof(*nic_dev->txqs);
271 nic_dev->txqs = devm_kzalloc(&netdev->dev, txq_size, GFP_KERNEL);
275 for (i = 0; i < num_txqs; i++) {
276 struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i);
278 err = hinic_init_txq(&nic_dev->txqs[i], sq, netdev);
280 netif_err(nic_dev, drv, netdev,
281 "Failed to init Txq\n");
289 for (j = 0; j < i; j++)
290 hinic_clean_txq(&nic_dev->txqs[j]);
292 devm_kfree(&netdev->dev, nic_dev->txqs);
297 * free_txqs - Free the Logical Tx Queues of specific NIC device
298 * @nic_dev: the specific NIC device
300 static void free_txqs(struct hinic_dev *nic_dev)
302 int i, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
303 struct net_device *netdev = nic_dev->netdev;
308 for (i = 0; i < num_txqs; i++)
309 hinic_clean_txq(&nic_dev->txqs[i]);
311 devm_kfree(&netdev->dev, nic_dev->txqs);
312 nic_dev->txqs = NULL;
316 * create_txqs - Create the Logical Rx Queues of specific NIC device
317 * @nic_dev: the specific NIC device
319 * Return 0 - Success, negative - Failure
321 static int create_rxqs(struct hinic_dev *nic_dev)
323 int err, i, j, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
324 struct net_device *netdev = nic_dev->netdev;
330 rxq_size = num_rxqs * sizeof(*nic_dev->rxqs);
331 nic_dev->rxqs = devm_kzalloc(&netdev->dev, rxq_size, GFP_KERNEL);
335 for (i = 0; i < num_rxqs; i++) {
336 struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i);
338 err = hinic_init_rxq(&nic_dev->rxqs[i], rq, netdev);
340 netif_err(nic_dev, drv, netdev,
341 "Failed to init rxq\n");
349 for (j = 0; j < i; j++)
350 hinic_clean_rxq(&nic_dev->rxqs[j]);
352 devm_kfree(&netdev->dev, nic_dev->rxqs);
357 * free_txqs - Free the Logical Rx Queues of specific NIC device
358 * @nic_dev: the specific NIC device
360 static void free_rxqs(struct hinic_dev *nic_dev)
362 int i, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
363 struct net_device *netdev = nic_dev->netdev;
368 for (i = 0; i < num_rxqs; i++)
369 hinic_clean_rxq(&nic_dev->rxqs[i]);
371 devm_kfree(&netdev->dev, nic_dev->rxqs);
372 nic_dev->rxqs = NULL;
375 static int hinic_open(struct net_device *netdev)
377 struct hinic_dev *nic_dev = netdev_priv(netdev);
378 enum hinic_port_link_state link_state;
379 int err, ret, num_qps;
381 if (!(nic_dev->flags & HINIC_INTF_UP)) {
382 err = hinic_hwdev_ifup(nic_dev->hwdev);
384 netif_err(nic_dev, drv, netdev,
385 "Failed - HW interface up\n");
390 err = create_txqs(nic_dev);
392 netif_err(nic_dev, drv, netdev,
393 "Failed to create Tx queues\n");
394 goto err_create_txqs;
397 err = create_rxqs(nic_dev);
399 netif_err(nic_dev, drv, netdev,
400 "Failed to create Rx queues\n");
401 goto err_create_rxqs;
404 num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
405 netif_set_real_num_tx_queues(netdev, num_qps);
406 netif_set_real_num_rx_queues(netdev, num_qps);
408 err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE);
410 netif_err(nic_dev, drv, netdev,
411 "Failed to set port state\n");
415 err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE);
417 netif_err(nic_dev, drv, netdev,
418 "Failed to set func port state\n");
419 goto err_func_port_state;
422 /* Wait up to 3 sec between port enable to link state */
425 down(&nic_dev->mgmt_lock);
427 err = hinic_port_link_state(nic_dev, &link_state);
429 netif_err(nic_dev, drv, netdev, "Failed to get link state\n");
433 if (link_state == HINIC_LINK_STATE_UP)
434 nic_dev->flags |= HINIC_LINK_UP;
436 nic_dev->flags |= HINIC_INTF_UP;
438 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
439 (HINIC_LINK_UP | HINIC_INTF_UP)) {
440 netif_info(nic_dev, drv, netdev, "link + intf UP\n");
441 netif_carrier_on(netdev);
442 netif_tx_wake_all_queues(netdev);
445 up(&nic_dev->mgmt_lock);
447 netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n");
451 up(&nic_dev->mgmt_lock);
452 ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
454 netif_warn(nic_dev, drv, netdev,
455 "Failed to revert func port state\n");
458 ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
460 netif_warn(nic_dev, drv, netdev,
461 "Failed to revert port state\n");
470 if (!(nic_dev->flags & HINIC_INTF_UP))
471 hinic_hwdev_ifdown(nic_dev->hwdev);
475 static int hinic_close(struct net_device *netdev)
477 struct hinic_dev *nic_dev = netdev_priv(netdev);
481 down(&nic_dev->mgmt_lock);
483 flags = nic_dev->flags;
484 nic_dev->flags &= ~HINIC_INTF_UP;
486 netif_carrier_off(netdev);
487 netif_tx_disable(netdev);
489 update_nic_stats(nic_dev);
491 up(&nic_dev->mgmt_lock);
493 err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
495 netif_err(nic_dev, drv, netdev,
496 "Failed to set func port state\n");
497 nic_dev->flags |= (flags & HINIC_INTF_UP);
501 err = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
503 netif_err(nic_dev, drv, netdev, "Failed to set port state\n");
504 nic_dev->flags |= (flags & HINIC_INTF_UP);
511 if (flags & HINIC_INTF_UP)
512 hinic_hwdev_ifdown(nic_dev->hwdev);
514 netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n");
518 static int hinic_change_mtu(struct net_device *netdev, int new_mtu)
520 struct hinic_dev *nic_dev = netdev_priv(netdev);
523 netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu);
525 err = hinic_port_set_mtu(nic_dev, new_mtu);
527 netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n");
529 netdev->mtu = new_mtu;
535 * change_mac_addr - change the main mac address of network device
536 * @netdev: network device
537 * @addr: mac address to set
539 * Return 0 - Success, negative - Failure
541 static int change_mac_addr(struct net_device *netdev, const u8 *addr)
543 struct hinic_dev *nic_dev = netdev_priv(netdev);
547 if (!is_valid_ether_addr(addr))
548 return -EADDRNOTAVAIL;
550 netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n",
551 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
553 down(&nic_dev->mgmt_lock);
556 err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid);
558 netif_err(nic_dev, drv, netdev,
559 "Failed to delete mac\n");
563 err = hinic_port_add_mac(nic_dev, addr, vid);
565 netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
569 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
570 } while (vid != VLAN_N_VID);
572 up(&nic_dev->mgmt_lock);
576 static int hinic_set_mac_addr(struct net_device *netdev, void *addr)
578 unsigned char new_mac[ETH_ALEN];
579 struct sockaddr *saddr = addr;
582 memcpy(new_mac, saddr->sa_data, ETH_ALEN);
584 err = change_mac_addr(netdev, new_mac);
586 memcpy(netdev->dev_addr, new_mac, ETH_ALEN);
592 * add_mac_addr - add mac address to network device
593 * @netdev: network device
594 * @addr: mac address to add
596 * Return 0 - Success, negative - Failure
598 static int add_mac_addr(struct net_device *netdev, const u8 *addr)
600 struct hinic_dev *nic_dev = netdev_priv(netdev);
604 netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n",
605 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
607 down(&nic_dev->mgmt_lock);
610 err = hinic_port_add_mac(nic_dev, addr, vid);
612 netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
616 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
617 } while (vid != VLAN_N_VID);
619 up(&nic_dev->mgmt_lock);
624 * remove_mac_addr - remove mac address from network device
625 * @netdev: network device
626 * @addr: mac address to remove
628 * Return 0 - Success, negative - Failure
630 static int remove_mac_addr(struct net_device *netdev, const u8 *addr)
632 struct hinic_dev *nic_dev = netdev_priv(netdev);
636 if (!is_valid_ether_addr(addr))
637 return -EADDRNOTAVAIL;
639 netif_info(nic_dev, drv, netdev, "remove mac addr = %02x %02x %02x %02x %02x %02x\n",
640 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
642 down(&nic_dev->mgmt_lock);
645 err = hinic_port_del_mac(nic_dev, addr, vid);
647 netif_err(nic_dev, drv, netdev,
648 "Failed to delete mac\n");
652 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
653 } while (vid != VLAN_N_VID);
655 up(&nic_dev->mgmt_lock);
659 static int hinic_vlan_rx_add_vid(struct net_device *netdev,
660 __always_unused __be16 proto, u16 vid)
662 struct hinic_dev *nic_dev = netdev_priv(netdev);
665 netif_info(nic_dev, drv, netdev, "add vid = %d\n", vid);
667 down(&nic_dev->mgmt_lock);
669 err = hinic_port_add_vlan(nic_dev, vid);
671 netif_err(nic_dev, drv, netdev, "Failed to add vlan\n");
675 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, vid);
677 netif_err(nic_dev, drv, netdev, "Failed to set mac\n");
681 bitmap_set(nic_dev->vlan_bitmap, vid, 1);
683 up(&nic_dev->mgmt_lock);
687 ret = hinic_port_del_vlan(nic_dev, vid);
689 netif_err(nic_dev, drv, netdev,
690 "Failed to revert by removing vlan\n");
693 up(&nic_dev->mgmt_lock);
697 static int hinic_vlan_rx_kill_vid(struct net_device *netdev,
698 __always_unused __be16 proto, u16 vid)
700 struct hinic_dev *nic_dev = netdev_priv(netdev);
703 netif_info(nic_dev, drv, netdev, "remove vid = %d\n", vid);
705 down(&nic_dev->mgmt_lock);
707 err = hinic_port_del_vlan(nic_dev, vid);
709 netif_err(nic_dev, drv, netdev, "Failed to delete vlan\n");
713 bitmap_clear(nic_dev->vlan_bitmap, vid, 1);
715 up(&nic_dev->mgmt_lock);
719 up(&nic_dev->mgmt_lock);
723 static void set_rx_mode(struct work_struct *work)
725 struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work);
726 struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work);
727 struct netdev_hw_addr *ha;
729 netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n");
731 hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode);
733 __dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
734 __dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
736 netdev_for_each_mc_addr(ha, nic_dev->netdev)
737 add_mac_addr(nic_dev->netdev, ha->addr);
740 static void hinic_set_rx_mode(struct net_device *netdev)
742 struct hinic_dev *nic_dev = netdev_priv(netdev);
743 struct hinic_rx_mode_work *rx_mode_work;
746 rx_mode_work = &nic_dev->rx_mode_work;
748 rx_mode = HINIC_RX_MODE_UC |
752 if (netdev->flags & IFF_PROMISC)
753 rx_mode |= HINIC_RX_MODE_PROMISC;
754 else if (netdev->flags & IFF_ALLMULTI)
755 rx_mode |= HINIC_RX_MODE_MC_ALL;
757 rx_mode_work->rx_mode = rx_mode;
759 queue_work(nic_dev->workq, &rx_mode_work->work);
762 static void hinic_tx_timeout(struct net_device *netdev)
764 struct hinic_dev *nic_dev = netdev_priv(netdev);
766 netif_err(nic_dev, drv, netdev, "Tx timeout\n");
769 static void hinic_get_stats64(struct net_device *netdev,
770 struct rtnl_link_stats64 *stats)
772 struct hinic_dev *nic_dev = netdev_priv(netdev);
773 struct hinic_rxq_stats *nic_rx_stats;
774 struct hinic_txq_stats *nic_tx_stats;
776 nic_rx_stats = &nic_dev->rx_stats;
777 nic_tx_stats = &nic_dev->tx_stats;
779 down(&nic_dev->mgmt_lock);
781 if (nic_dev->flags & HINIC_INTF_UP)
782 update_nic_stats(nic_dev);
784 up(&nic_dev->mgmt_lock);
786 stats->rx_bytes = nic_rx_stats->bytes;
787 stats->rx_packets = nic_rx_stats->pkts;
789 stats->tx_bytes = nic_tx_stats->bytes;
790 stats->tx_packets = nic_tx_stats->pkts;
791 stats->tx_errors = nic_tx_stats->tx_dropped;
794 static const struct net_device_ops hinic_netdev_ops = {
795 .ndo_open = hinic_open,
796 .ndo_stop = hinic_close,
797 .ndo_change_mtu = hinic_change_mtu,
798 .ndo_set_mac_address = hinic_set_mac_addr,
799 .ndo_validate_addr = eth_validate_addr,
800 .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid,
801 .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid,
802 .ndo_set_rx_mode = hinic_set_rx_mode,
803 .ndo_start_xmit = hinic_xmit_frame,
804 .ndo_tx_timeout = hinic_tx_timeout,
805 .ndo_get_stats64 = hinic_get_stats64,
808 static void netdev_features_init(struct net_device *netdev)
810 netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM |
811 NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
814 netdev->vlan_features = netdev->hw_features;
816 netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
820 * link_status_event_handler - link event handler
821 * @handle: nic device for the handler
822 * @buf_in: input buffer
823 * @in_size: input size
824 * @buf_in: output buffer
825 * @out_size: returned output size
827 * Return 0 - Success, negative - Failure
829 static void link_status_event_handler(void *handle, void *buf_in, u16 in_size,
830 void *buf_out, u16 *out_size)
832 struct hinic_port_link_status *link_status, *ret_link_status;
833 struct hinic_dev *nic_dev = handle;
835 link_status = buf_in;
837 if (link_status->link == HINIC_LINK_STATE_UP) {
838 down(&nic_dev->mgmt_lock);
840 nic_dev->flags |= HINIC_LINK_UP;
842 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
843 (HINIC_LINK_UP | HINIC_INTF_UP)) {
844 netif_carrier_on(nic_dev->netdev);
845 netif_tx_wake_all_queues(nic_dev->netdev);
848 up(&nic_dev->mgmt_lock);
850 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is UP\n");
852 down(&nic_dev->mgmt_lock);
854 nic_dev->flags &= ~HINIC_LINK_UP;
856 netif_carrier_off(nic_dev->netdev);
857 netif_tx_disable(nic_dev->netdev);
859 up(&nic_dev->mgmt_lock);
861 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is DOWN\n");
864 ret_link_status = buf_out;
865 ret_link_status->status = 0;
867 *out_size = sizeof(*ret_link_status);
870 static int set_features(struct hinic_dev *nic_dev,
871 netdev_features_t pre_features,
872 netdev_features_t features, bool force_change)
874 netdev_features_t changed = force_change ? ~0 : pre_features ^ features;
875 u32 csum_en = HINIC_RX_CSUM_OFFLOAD_EN;
878 if (changed & NETIF_F_TSO)
879 err = hinic_port_set_tso(nic_dev, (features & NETIF_F_TSO) ?
880 HINIC_TSO_ENABLE : HINIC_TSO_DISABLE);
882 if (changed & NETIF_F_RXCSUM)
883 err = hinic_set_rx_csum_offload(nic_dev, csum_en);
889 * nic_dev_init - Initialize the NIC device
890 * @pdev: the NIC pci device
892 * Return 0 - Success, negative - Failure
894 static int nic_dev_init(struct pci_dev *pdev)
896 struct hinic_rx_mode_work *rx_mode_work;
897 struct hinic_txq_stats *tx_stats;
898 struct hinic_rxq_stats *rx_stats;
899 struct hinic_dev *nic_dev;
900 struct net_device *netdev;
901 struct hinic_hwdev *hwdev;
904 hwdev = hinic_init_hwdev(pdev);
906 dev_err(&pdev->dev, "Failed to initialize HW device\n");
907 return PTR_ERR(hwdev);
910 num_qps = hinic_hwdev_num_qps(hwdev);
912 dev_err(&pdev->dev, "Invalid number of QPS\n");
917 netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps);
919 dev_err(&pdev->dev, "Failed to allocate Ethernet device\n");
921 goto err_alloc_etherdev;
924 netdev->netdev_ops = &hinic_netdev_ops;
925 netdev->ethtool_ops = &hinic_ethtool_ops;
926 netdev->max_mtu = ETH_MAX_MTU;
928 nic_dev = netdev_priv(netdev);
929 nic_dev->netdev = netdev;
930 nic_dev->hwdev = hwdev;
931 nic_dev->msg_enable = MSG_ENABLE_DEFAULT;
933 nic_dev->txqs = NULL;
934 nic_dev->rxqs = NULL;
935 nic_dev->tx_weight = tx_weight;
936 nic_dev->rx_weight = rx_weight;
938 sema_init(&nic_dev->mgmt_lock, 1);
940 tx_stats = &nic_dev->tx_stats;
941 rx_stats = &nic_dev->rx_stats;
943 u64_stats_init(&tx_stats->syncp);
944 u64_stats_init(&rx_stats->syncp);
946 nic_dev->vlan_bitmap = devm_kzalloc(&pdev->dev,
947 VLAN_BITMAP_SIZE(nic_dev),
949 if (!nic_dev->vlan_bitmap) {
951 goto err_vlan_bitmap;
954 nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME);
955 if (!nic_dev->workq) {
960 pci_set_drvdata(pdev, netdev);
962 err = hinic_port_get_mac(nic_dev, netdev->dev_addr);
964 dev_warn(&pdev->dev, "Failed to get mac address\n");
966 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0);
968 dev_err(&pdev->dev, "Failed to add mac\n");
972 err = hinic_port_set_mtu(nic_dev, netdev->mtu);
974 dev_err(&pdev->dev, "Failed to set mtu\n");
978 rx_mode_work = &nic_dev->rx_mode_work;
979 INIT_WORK(&rx_mode_work->work, set_rx_mode);
981 netdev_features_init(netdev);
983 netif_carrier_off(netdev);
985 hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS,
986 nic_dev, link_status_event_handler);
988 err = set_features(nic_dev, 0, nic_dev->netdev->features, true);
990 goto err_set_features;
992 SET_NETDEV_DEV(netdev, &pdev->dev);
994 err = register_netdev(netdev);
996 dev_err(&pdev->dev, "Failed to register netdev\n");
1004 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1005 HINIC_MGMT_MSG_CMD_LINK_STATUS);
1006 cancel_work_sync(&rx_mode_work->work);
1010 pci_set_drvdata(pdev, NULL);
1011 destroy_workqueue(nic_dev->workq);
1015 free_netdev(netdev);
1019 hinic_free_hwdev(hwdev);
1023 static int hinic_probe(struct pci_dev *pdev,
1024 const struct pci_device_id *id)
1026 int err = pci_enable_device(pdev);
1029 dev_err(&pdev->dev, "Failed to enable PCI device\n");
1033 err = pci_request_regions(pdev, HINIC_DRV_NAME);
1035 dev_err(&pdev->dev, "Failed to request PCI regions\n");
1036 goto err_pci_regions;
1039 pci_set_master(pdev);
1041 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1043 dev_warn(&pdev->dev, "Couldn't set 64-bit DMA mask\n");
1044 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1046 dev_err(&pdev->dev, "Failed to set DMA mask\n");
1051 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1053 dev_warn(&pdev->dev,
1054 "Couldn't set 64-bit consistent DMA mask\n");
1055 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1058 "Failed to set consistent DMA mask\n");
1059 goto err_dma_consistent_mask;
1063 err = nic_dev_init(pdev);
1065 dev_err(&pdev->dev, "Failed to initialize NIC device\n");
1066 goto err_nic_dev_init;
1069 dev_info(&pdev->dev, "HiNIC driver - probed\n");
1073 err_dma_consistent_mask:
1075 pci_release_regions(pdev);
1078 pci_disable_device(pdev);
1082 static void hinic_remove(struct pci_dev *pdev)
1084 struct net_device *netdev = pci_get_drvdata(pdev);
1085 struct hinic_dev *nic_dev = netdev_priv(netdev);
1086 struct hinic_rx_mode_work *rx_mode_work;
1088 unregister_netdev(netdev);
1090 hinic_hwdev_cb_unregister(nic_dev->hwdev,
1091 HINIC_MGMT_MSG_CMD_LINK_STATUS);
1093 rx_mode_work = &nic_dev->rx_mode_work;
1094 cancel_work_sync(&rx_mode_work->work);
1096 pci_set_drvdata(pdev, NULL);
1098 destroy_workqueue(nic_dev->workq);
1100 hinic_free_hwdev(nic_dev->hwdev);
1102 free_netdev(netdev);
1104 pci_release_regions(pdev);
1105 pci_disable_device(pdev);
1107 dev_info(&pdev->dev, "HiNIC driver - removed\n");
1110 static void hinic_shutdown(struct pci_dev *pdev)
1112 pci_disable_device(pdev);
1115 static const struct pci_device_id hinic_pci_table[] = {
1116 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE), 0},
1117 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE), 0},
1118 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ), 0},
1119 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ), 0},
1122 MODULE_DEVICE_TABLE(pci, hinic_pci_table);
1124 static struct pci_driver hinic_driver = {
1125 .name = HINIC_DRV_NAME,
1126 .id_table = hinic_pci_table,
1127 .probe = hinic_probe,
1128 .remove = hinic_remove,
1129 .shutdown = hinic_shutdown,
1132 module_pci_driver(hinic_driver);