2 * Copyright (c) 2014-2015 Hisilicon Limited.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
10 #include <linux/clk.h>
11 #include <linux/cpumask.h>
12 #include <linux/etherdevice.h>
13 #include <linux/if_vlan.h>
14 #include <linux/interrupt.h>
17 #include <linux/ipv6.h>
18 #include <linux/module.h>
19 #include <linux/phy.h>
20 #include <linux/platform_device.h>
21 #include <linux/skbuff.h>
26 #define NIC_MAX_Q_PER_VF 16
27 #define HNS_NIC_TX_TIMEOUT (5 * HZ)
29 #define SERVICE_TIMER_HZ (1 * HZ)
31 #define NIC_TX_CLEAN_MAX_NUM 256
32 #define NIC_RX_CLEAN_MAX_NUM 64
34 #define RCB_IRQ_NOT_INITED 0
35 #define RCB_IRQ_INITED 1
37 static void fill_desc(struct hnae_ring *ring, void *priv,
38 int size, dma_addr_t dma, int frag_end,
39 int buf_num, enum hns_desc_type type)
41 struct hnae_desc *desc = &ring->desc[ring->next_to_use];
42 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
46 u32 asid_bufnum_pid = 0;
47 u32 flag_ipoffset = 0;
50 desc_cb->length = size;
54 desc->addr = cpu_to_le64(dma);
55 desc->tx.send_size = cpu_to_le16((u16)size);
57 /*config bd buffer end */
58 flag_ipoffset |= 1 << HNS_TXD_VLD_B;
60 asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S;
62 if (type == DESC_TYPE_SKB) {
63 skb = (struct sk_buff *)priv;
65 if (skb->ip_summed == CHECKSUM_PARTIAL) {
66 protocol = skb->protocol;
69 /*if it is a SW VLAN check the next protocol*/
70 if (protocol == htons(ETH_P_8021Q)) {
71 ip_offset += VLAN_HLEN;
72 protocol = vlan_get_protocol(skb);
73 skb->protocol = protocol;
76 if (skb->protocol == htons(ETH_P_IP)) {
77 flag_ipoffset |= 1 << HNS_TXD_L3CS_B;
78 /* check for tcp/udp header */
79 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
81 } else if (skb->protocol == htons(ETH_P_IPV6)) {
82 /* ipv6 has not l3 cs, check for L4 header */
83 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
86 flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S;
90 flag_ipoffset |= frag_end << HNS_TXD_FE_B;
92 desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid);
93 desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset);
95 ring_ptr_move_fw(ring, next_to_use);
98 static void unfill_desc(struct hnae_ring *ring)
100 ring_ptr_move_bw(ring, next_to_use);
103 int hns_nic_net_xmit_hw(struct net_device *ndev,
105 struct hns_nic_ring_data *ring_data)
107 struct hns_nic_priv *priv = netdev_priv(ndev);
108 struct device *dev = priv->dev;
109 struct hnae_ring *ring = ring_data->ring;
110 struct netdev_queue *dev_queue;
111 struct skb_frag_struct *frag;
114 int size, next_to_use;
116 struct sk_buff *new_skb;
118 assert(ring->max_desc_num_per_pkt <= ring->desc_num);
120 /* no. of segments (plus a header) */
121 buf_num = skb_shinfo(skb)->nr_frags + 1;
123 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
124 if (ring_space(ring) < 1) {
125 ring->stats.tx_busy++;
126 goto out_net_tx_busy;
129 new_skb = skb_copy(skb, GFP_ATOMIC);
131 ring->stats.sw_err_cnt++;
132 netdev_err(ndev, "no memory to xmit!\n");
136 dev_kfree_skb_any(skb);
139 assert(skb_shinfo(skb)->nr_frags == 1);
140 } else if (buf_num > ring_space(ring)) {
141 ring->stats.tx_busy++;
142 goto out_net_tx_busy;
144 next_to_use = ring->next_to_use;
146 /* fill the first part */
147 size = skb_headlen(skb);
148 dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE);
149 if (dma_mapping_error(dev, dma)) {
150 netdev_err(ndev, "TX head DMA map failed\n");
151 ring->stats.sw_err_cnt++;
154 fill_desc(ring, skb, size, dma, buf_num == 1 ? 1 : 0, buf_num,
157 /* fill the fragments */
158 for (i = 1; i < buf_num; i++) {
159 frag = &skb_shinfo(skb)->frags[i - 1];
160 size = skb_frag_size(frag);
161 dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
162 if (dma_mapping_error(dev, dma)) {
163 netdev_err(ndev, "TX frag(%d) DMA map failed\n", i);
164 ring->stats.sw_err_cnt++;
165 goto out_map_frag_fail;
167 fill_desc(ring, skb_frag_page(frag), size, dma,
168 buf_num - 1 == i ? 1 : 0, buf_num, DESC_TYPE_PAGE);
171 /*complete translate all packets*/
172 dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping);
173 netdev_tx_sent_queue(dev_queue, skb->len);
175 wmb(); /* commit all data before submit */
176 assert(skb->queue_mapping < priv->ae_handle->q_num);
177 hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num);
178 ring->stats.tx_pkts++;
179 ring->stats.tx_bytes += skb->len;
185 for (j = i - 1; j > 0; j--) {
187 next_to_use = ring->next_to_use;
188 dma_unmap_page(dev, ring->desc_cb[next_to_use].dma,
189 ring->desc_cb[next_to_use].length,
194 next_to_use = ring->next_to_use;
195 dma_unmap_single(dev, ring->desc_cb[next_to_use].dma,
196 ring->desc_cb[next_to_use].length, DMA_TO_DEVICE);
200 dev_kfree_skb_any(skb);
205 netif_stop_subqueue(ndev, skb->queue_mapping);
207 /* Herbert's original patch had:
208 * smp_mb__after_netif_stop_queue();
209 * but since that doesn't exist yet, just open code it.
212 return NETDEV_TX_BUSY;
216 * hns_nic_get_headlen - determine size of header for RSC/LRO/GRO/FCOE
217 * @data: pointer to the start of the headers
218 * @max: total length of section to find headers in
220 * This function is meant to determine the length of headers that will
221 * be recognized by hardware for LRO, GRO, and RSC offloads. The main
222 * motivation of doing this is to only perform one pull for IPv4 TCP
223 * packets so that we can do basic things like calculating the gso_size
224 * based on the average data per packet.
226 static unsigned int hns_nic_get_headlen(unsigned char *data, u32 flag,
227 unsigned int max_size)
229 unsigned char *network;
232 /* this should never happen, but better safe than sorry */
233 if (max_size < ETH_HLEN)
236 /* initialize network frame pointer */
239 /* set first protocol and move network header forward */
242 /* handle any vlan tag if present */
243 if (hnae_get_field(flag, HNS_RXD_VLAN_M, HNS_RXD_VLAN_S)
244 == HNS_RX_FLAG_VLAN_PRESENT) {
245 if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN))
248 network += VLAN_HLEN;
251 /* handle L3 protocols */
252 if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S)
253 == HNS_RX_FLAG_L3ID_IPV4) {
254 if ((typeof(max_size))(network - data) >
255 (max_size - sizeof(struct iphdr)))
258 /* access ihl as a u8 to avoid unaligned access on ia64 */
259 hlen = (network[0] & 0x0F) << 2;
261 /* verify hlen meets minimum size requirements */
262 if (hlen < sizeof(struct iphdr))
263 return network - data;
265 /* record next protocol if header is present */
266 } else if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S)
267 == HNS_RX_FLAG_L3ID_IPV6) {
268 if ((typeof(max_size))(network - data) >
269 (max_size - sizeof(struct ipv6hdr)))
272 /* record next protocol */
273 hlen = sizeof(struct ipv6hdr);
275 return network - data;
278 /* relocate pointer to start of L4 header */
281 /* finally sort out TCP/UDP */
282 if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S)
283 == HNS_RX_FLAG_L4ID_TCP) {
284 if ((typeof(max_size))(network - data) >
285 (max_size - sizeof(struct tcphdr)))
288 /* access doff as a u8 to avoid unaligned access on ia64 */
289 hlen = (network[12] & 0xF0) >> 2;
291 /* verify hlen meets minimum size requirements */
292 if (hlen < sizeof(struct tcphdr))
293 return network - data;
296 } else if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S)
297 == HNS_RX_FLAG_L4ID_UDP) {
298 if ((typeof(max_size))(network - data) >
299 (max_size - sizeof(struct udphdr)))
302 network += sizeof(struct udphdr);
305 /* If everything has gone correctly network should be the
306 * data section of the packet and will be the end of the header.
307 * If not then it probably represents the end of the last recognized
310 if ((typeof(max_size))(network - data) < max_size)
311 return network - data;
317 hns_nic_reuse_page(struct hnae_desc_cb *desc_cb, int tsize, int last_offset)
319 /* avoid re-using remote pages,flag default unreuse */
320 if (likely(page_to_nid(desc_cb->priv) == numa_node_id())) {
321 /* move offset up to the next cache line */
322 desc_cb->page_offset += tsize;
324 if (desc_cb->page_offset <= last_offset) {
325 desc_cb->reuse_flag = 1;
326 /* bump ref count on page before it is given*/
327 get_page(desc_cb->priv);
332 static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data,
333 struct sk_buff **out_skb, int *out_bnum)
335 struct hnae_ring *ring = ring_data->ring;
336 struct net_device *ndev = ring_data->napi.dev;
338 struct hnae_desc *desc;
339 struct hnae_desc_cb *desc_cb;
341 int bnum, length, size, i, truesize, last_offset;
345 last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
346 desc = &ring->desc[ring->next_to_clean];
347 desc_cb = &ring->desc_cb[ring->next_to_clean];
348 length = le16_to_cpu(desc->rx.pkt_len);
349 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
350 bnum = hnae_get_field(bnum_flag, HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S);
352 va = (unsigned char *)desc_cb->buf + desc_cb->page_offset;
354 skb = *out_skb = napi_alloc_skb(&ring_data->napi, HNS_RX_HEAD_SIZE);
355 if (unlikely(!skb)) {
356 netdev_err(ndev, "alloc rx skb fail\n");
357 ring->stats.sw_err_cnt++;
361 if (length <= HNS_RX_HEAD_SIZE) {
362 memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
364 /* we can reuse buffer as-is, just make sure it is local */
365 if (likely(page_to_nid(desc_cb->priv) == numa_node_id()))
366 desc_cb->reuse_flag = 1;
367 else /* this page cannot be reused so discard it */
368 put_page(desc_cb->priv);
370 ring_ptr_move_fw(ring, next_to_clean);
372 if (unlikely(bnum != 1)) { /* check err*/
377 ring->stats.seg_pkt_cnt++;
379 pull_len = hns_nic_get_headlen(va, bnum_flag, HNS_RX_HEAD_SIZE);
380 memcpy(__skb_put(skb, pull_len), va,
381 ALIGN(pull_len, sizeof(long)));
383 size = le16_to_cpu(desc->rx.size);
384 truesize = ALIGN(size, L1_CACHE_BYTES);
385 skb_add_rx_frag(skb, 0, desc_cb->priv,
386 desc_cb->page_offset + pull_len,
387 size - pull_len, truesize - pull_len);
389 hns_nic_reuse_page(desc_cb, truesize, last_offset);
390 ring_ptr_move_fw(ring, next_to_clean);
392 if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/
396 for (i = 1; i < bnum; i++) {
397 desc = &ring->desc[ring->next_to_clean];
398 desc_cb = &ring->desc_cb[ring->next_to_clean];
399 size = le16_to_cpu(desc->rx.size);
400 truesize = ALIGN(size, L1_CACHE_BYTES);
401 skb_add_rx_frag(skb, i, desc_cb->priv,
402 desc_cb->page_offset,
405 hns_nic_reuse_page(desc_cb, truesize, last_offset);
406 ring_ptr_move_fw(ring, next_to_clean);
410 /* check except process, free skb and jump the desc */
411 if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) {
413 *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/
414 netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n",
415 bnum, ring->max_desc_num_per_pkt,
416 length, (int)MAX_SKB_FRAGS,
417 ((u64 *)desc)[0], ((u64 *)desc)[1]);
418 ring->stats.err_bd_num++;
419 dev_kfree_skb_any(skb);
423 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
425 if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) {
426 netdev_err(ndev, "no valid bd,%016llx,%016llx\n",
427 ((u64 *)desc)[0], ((u64 *)desc)[1]);
428 ring->stats.non_vld_descs++;
429 dev_kfree_skb_any(skb);
433 if (unlikely((!desc->rx.pkt_len) ||
434 hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) {
435 ring->stats.err_pkt_len++;
436 dev_kfree_skb_any(skb);
440 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) {
441 ring->stats.l2_err++;
442 dev_kfree_skb_any(skb);
446 ring->stats.rx_pkts++;
447 ring->stats.rx_bytes += skb->len;
449 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L3E_B) ||
450 hnae_get_bit(bnum_flag, HNS_RXD_L4E_B))) {
451 ring->stats.l3l4_csum_err++;
455 skb->ip_summed = CHECKSUM_UNNECESSARY;
461 hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count)
464 struct hnae_desc_cb res_cbs;
465 struct hnae_desc_cb *desc_cb;
466 struct hnae_ring *ring = ring_data->ring;
467 struct net_device *ndev = ring_data->napi.dev;
469 for (i = 0; i < cleand_count; i++) {
470 desc_cb = &ring->desc_cb[ring->next_to_use];
471 if (desc_cb->reuse_flag) {
472 ring->stats.reuse_pg_cnt++;
473 hnae_reuse_buffer(ring, ring->next_to_use);
475 ret = hnae_reserve_buffer_map(ring, &res_cbs);
477 ring->stats.sw_err_cnt++;
478 netdev_err(ndev, "hnae reserve buffer map failed.\n");
481 hnae_replace_buffer(ring, ring->next_to_use, &res_cbs);
484 ring_ptr_move_fw(ring, next_to_use);
487 wmb(); /* make all data has been write before submit */
488 writel_relaxed(i, ring->io_base + RCB_REG_HEAD);
491 /* return error number for error or number of desc left to take
493 static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data,
496 struct net_device *ndev = ring_data->napi.dev;
498 skb->protocol = eth_type_trans(skb, ndev);
499 (void)napi_gro_receive(&ring_data->napi, skb);
500 ndev->last_rx = jiffies;
503 static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data,
506 struct hnae_ring *ring = ring_data->ring;
508 int num, bnum, ex_num;
509 #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
510 int recv_pkts, recv_bds, clean_count, err;
512 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
513 rmb(); /* make sure num taken effect before the other data is touched */
515 recv_pkts = 0, recv_bds = 0, clean_count = 0;
517 while (recv_pkts < budget && recv_bds < num) {
518 /* reuse or realloc buffers*/
519 if (clean_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
520 hns_nic_alloc_rx_buffers(ring_data, clean_count);
525 err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum);
526 if (unlikely(!skb)) /* this fault cannot be repaired */
531 if (unlikely(err)) { /* do jump the err */
536 /* do update ip stack process*/
537 ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)(
542 /* make all data has been write before submit */
543 if (clean_count > 0) {
544 hns_nic_alloc_rx_buffers(ring_data, clean_count);
548 if (recv_pkts < budget) {
549 ex_num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
550 rmb(); /*complete read rx ring bd number*/
560 static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
562 struct hnae_ring *ring = ring_data->ring;
565 /* for hardware bug fixed */
566 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
569 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
572 napi_schedule(&ring_data->napi);
576 static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring,
577 int *bytes, int *pkts)
579 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
581 (*pkts) += (desc_cb->type == DESC_TYPE_SKB);
582 (*bytes) += desc_cb->length;
583 /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
584 hnae_free_buffer_detach(ring, ring->next_to_clean);
586 ring_ptr_move_fw(ring, next_to_clean);
589 static int is_valid_clean_head(struct hnae_ring *ring, int h)
591 int u = ring->next_to_use;
592 int c = ring->next_to_clean;
594 if (unlikely(h > ring->desc_num))
597 assert(u > 0 && u < ring->desc_num);
598 assert(c > 0 && c < ring->desc_num);
599 assert(u != c && h != c); /* must be checked before call this func */
601 return u > c ? (h > c && h <= u) : (h > c || h <= u);
604 /* netif_tx_lock will turn down the performance, set only when necessary */
605 #ifdef CONFIG_NET_POLL_CONTROLLER
606 #define NETIF_TX_LOCK(ndev) netif_tx_lock(ndev)
607 #define NETIF_TX_UNLOCK(ndev) netif_tx_unlock(ndev)
609 #define NETIF_TX_LOCK(ndev)
610 #define NETIF_TX_UNLOCK(ndev)
612 /* reclaim all desc in one budget
613 * return error or number of desc left
615 static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
618 struct hnae_ring *ring = ring_data->ring;
619 struct net_device *ndev = ring_data->napi.dev;
620 struct netdev_queue *dev_queue;
621 struct hns_nic_priv *priv = netdev_priv(ndev);
627 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
628 rmb(); /* make sure head is ready before touch any data */
630 if (is_ring_empty(ring) || head == ring->next_to_clean) {
631 NETIF_TX_UNLOCK(ndev);
632 return 0; /* no data to poll */
635 if (!is_valid_clean_head(ring, head)) {
636 netdev_err(ndev, "wrong head (%d, %d-%d)\n", head,
637 ring->next_to_use, ring->next_to_clean);
638 ring->stats.io_err_cnt++;
639 NETIF_TX_UNLOCK(ndev);
645 while (head != ring->next_to_clean)
646 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
648 NETIF_TX_UNLOCK(ndev);
650 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
651 netdev_tx_completed_queue(dev_queue, pkts, bytes);
653 if (unlikely(pkts && netif_carrier_ok(ndev) &&
654 (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) {
655 /* Make sure that anybody stopping the queue after this
656 * sees the new next_to_clean.
659 if (netif_tx_queue_stopped(dev_queue) &&
660 !test_bit(NIC_STATE_DOWN, &priv->state)) {
661 netif_tx_wake_queue(dev_queue);
662 ring->stats.restart_queue++;
668 static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
670 struct hnae_ring *ring = ring_data->ring;
671 int head = ring->next_to_clean;
673 /* for hardware bug fixed */
674 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
676 if (head != ring->next_to_clean) {
677 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
680 napi_schedule(&ring_data->napi);
684 static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
686 struct hnae_ring *ring = ring_data->ring;
687 struct net_device *ndev = ring_data->napi.dev;
688 struct netdev_queue *dev_queue;
694 head = ring->next_to_use; /* ntu :soft setted ring position*/
697 while (head != ring->next_to_clean)
698 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
700 NETIF_TX_UNLOCK(ndev);
702 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
703 netdev_tx_reset_queue(dev_queue);
706 static int hns_nic_common_poll(struct napi_struct *napi, int budget)
708 struct hns_nic_ring_data *ring_data =
709 container_of(napi, struct hns_nic_ring_data, napi);
710 int clean_complete = ring_data->poll_one(
711 ring_data, budget, ring_data->ex_process);
713 if (clean_complete >= 0 && clean_complete < budget) {
715 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
718 ring_data->fini_process(ring_data);
721 return clean_complete;
724 static irqreturn_t hns_irq_handle(int irq, void *dev)
726 struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev;
728 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
730 napi_schedule(&ring_data->napi);
736 *hns_nic_adjust_link - adjust net work mode by the phy stat or new param
739 static void hns_nic_adjust_link(struct net_device *ndev)
741 struct hns_nic_priv *priv = netdev_priv(ndev);
742 struct hnae_handle *h = priv->ae_handle;
744 h->dev->ops->adjust_link(h, ndev->phydev->speed, ndev->phydev->duplex);
748 *hns_nic_init_phy - init phy
751 * Return 0 on success, negative on failure
753 int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h)
755 struct hns_nic_priv *priv = netdev_priv(ndev);
756 struct phy_device *phy_dev = NULL;
761 if (h->phy_if != PHY_INTERFACE_MODE_XGMII)
762 phy_dev = of_phy_connect(ndev, h->phy_node,
763 hns_nic_adjust_link, 0, h->phy_if);
765 phy_dev = of_phy_attach(ndev, h->phy_node, 0, h->phy_if);
767 if (unlikely(!phy_dev) || IS_ERR(phy_dev))
768 return !phy_dev ? -ENODEV : PTR_ERR(phy_dev);
770 phy_dev->supported &= h->if_support;
771 phy_dev->advertising = phy_dev->supported;
773 if (h->phy_if == PHY_INTERFACE_MODE_XGMII)
774 phy_dev->autoneg = false;
781 static int hns_nic_ring_open(struct net_device *netdev, int idx)
783 struct hns_nic_priv *priv = netdev_priv(netdev);
784 struct hnae_handle *h = priv->ae_handle;
786 napi_enable(&priv->ring_data[idx].napi);
788 enable_irq(priv->ring_data[idx].ring->irq);
789 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0);
794 static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p)
796 struct hns_nic_priv *priv = netdev_priv(ndev);
797 struct hnae_handle *h = priv->ae_handle;
798 struct sockaddr *mac_addr = p;
801 if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
802 return -EADDRNOTAVAIL;
804 ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data);
806 netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret);
810 memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len);
815 void hns_nic_update_stats(struct net_device *netdev)
817 struct hns_nic_priv *priv = netdev_priv(netdev);
818 struct hnae_handle *h = priv->ae_handle;
820 h->dev->ops->update_stats(h, &netdev->stats);
823 /* set mac addr if it is configed. or leave it to the AE driver */
824 static void hns_init_mac_addr(struct net_device *ndev)
826 struct hns_nic_priv *priv = netdev_priv(ndev);
827 struct device_node *node = priv->dev->of_node;
828 const void *mac_addr_temp;
830 mac_addr_temp = of_get_mac_address(node);
831 if (mac_addr_temp && is_valid_ether_addr(mac_addr_temp)) {
832 memcpy(ndev->dev_addr, mac_addr_temp, ndev->addr_len);
834 eth_hw_addr_random(ndev);
835 dev_warn(priv->dev, "No valid mac, use random mac %pM",
840 static void hns_nic_ring_close(struct net_device *netdev, int idx)
842 struct hns_nic_priv *priv = netdev_priv(netdev);
843 struct hnae_handle *h = priv->ae_handle;
845 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1);
846 disable_irq(priv->ring_data[idx].ring->irq);
848 napi_disable(&priv->ring_data[idx].napi);
851 static int hns_nic_init_irq(struct hns_nic_priv *priv)
853 struct hnae_handle *h = priv->ae_handle;
854 struct hns_nic_ring_data *rd;
860 for (i = 0; i < h->q_num * 2; i++) {
861 rd = &priv->ring_data[i];
863 if (rd->ring->irq_init_flag == RCB_IRQ_INITED)
866 snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN,
867 "%s-%s%d", priv->netdev->name,
868 (i < h->q_num ? "tx" : "rx"), rd->queue_index);
870 rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0';
872 ret = request_irq(rd->ring->irq,
873 hns_irq_handle, 0, rd->ring->ring_name, rd);
875 netdev_err(priv->netdev, "request irq(%d) fail\n",
879 disable_irq(rd->ring->irq);
880 rd->ring->irq_init_flag = RCB_IRQ_INITED;
883 if (cpu_online(rd->queue_index)) {
884 cpumask_clear(&mask);
885 cpu = rd->queue_index;
886 cpumask_set_cpu(cpu, &mask);
887 irq_set_affinity_hint(rd->ring->irq, &mask);
894 static int hns_nic_net_up(struct net_device *ndev)
896 struct hns_nic_priv *priv = netdev_priv(ndev);
897 struct hnae_handle *h = priv->ae_handle;
901 ret = hns_nic_init_irq(priv);
903 netdev_err(ndev, "hns init irq failed! ret=%d\n", ret);
907 for (i = 0; i < h->q_num * 2; i++) {
908 ret = hns_nic_ring_open(ndev, i);
910 goto out_has_some_queues;
913 for (k = 0; k < h->q_num; k++)
914 h->dev->ops->toggle_queue_status(h->qs[k], 1);
916 ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr);
918 goto out_set_mac_addr_err;
920 ret = h->dev->ops->start ? h->dev->ops->start(h) : 0;
925 phy_start(priv->phy);
927 clear_bit(NIC_STATE_DOWN, &priv->state);
928 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
933 netif_stop_queue(ndev);
934 out_set_mac_addr_err:
935 for (k = 0; k < h->q_num; k++)
936 h->dev->ops->toggle_queue_status(h->qs[k], 0);
938 for (j = i - 1; j >= 0; j--)
939 hns_nic_ring_close(ndev, j);
941 set_bit(NIC_STATE_DOWN, &priv->state);
946 static void hns_nic_net_down(struct net_device *ndev)
949 struct hnae_ae_ops *ops;
950 struct hns_nic_priv *priv = netdev_priv(ndev);
952 if (test_and_set_bit(NIC_STATE_DOWN, &priv->state))
955 (void)del_timer_sync(&priv->service_timer);
956 netif_tx_stop_all_queues(ndev);
957 netif_carrier_off(ndev);
958 netif_tx_disable(ndev);
964 ops = priv->ae_handle->dev->ops;
967 ops->stop(priv->ae_handle);
969 netif_tx_stop_all_queues(ndev);
971 for (i = priv->ae_handle->q_num - 1; i >= 0; i--) {
972 hns_nic_ring_close(ndev, i);
973 hns_nic_ring_close(ndev, i + priv->ae_handle->q_num);
975 /* clean tx buffers*/
976 hns_nic_tx_clr_all_bufs(priv->ring_data + i);
980 void hns_nic_net_reset(struct net_device *ndev)
982 struct hns_nic_priv *priv = netdev_priv(ndev);
983 struct hnae_handle *handle = priv->ae_handle;
985 while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state))
986 usleep_range(1000, 2000);
988 (void)hnae_reinit_handle(handle);
990 clear_bit(NIC_STATE_RESETTING, &priv->state);
993 void hns_nic_net_reinit(struct net_device *netdev)
995 struct hns_nic_priv *priv = netdev_priv(netdev);
997 priv->netdev->trans_start = jiffies;
998 while (test_and_set_bit(NIC_STATE_REINITING, &priv->state))
999 usleep_range(1000, 2000);
1001 hns_nic_net_down(netdev);
1002 hns_nic_net_reset(netdev);
1003 (void)hns_nic_net_up(netdev);
1004 clear_bit(NIC_STATE_REINITING, &priv->state);
1007 static int hns_nic_net_open(struct net_device *ndev)
1009 struct hns_nic_priv *priv = netdev_priv(ndev);
1010 struct hnae_handle *h = priv->ae_handle;
1013 if (test_bit(NIC_STATE_TESTING, &priv->state))
1017 netif_carrier_off(ndev);
1019 ret = netif_set_real_num_tx_queues(ndev, h->q_num);
1021 netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n",
1026 ret = netif_set_real_num_rx_queues(ndev, h->q_num);
1029 "netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
1033 ret = hns_nic_net_up(ndev);
1036 "hns net up fail, ret=%d!\n", ret);
1043 static int hns_nic_net_stop(struct net_device *ndev)
1045 hns_nic_net_down(ndev);
1050 static void hns_tx_timeout_reset(struct hns_nic_priv *priv);
1051 static void hns_nic_net_timeout(struct net_device *ndev)
1053 struct hns_nic_priv *priv = netdev_priv(ndev);
1055 hns_tx_timeout_reset(priv);
1058 static int hns_nic_do_ioctl(struct net_device *netdev, struct ifreq *ifr,
1061 struct hns_nic_priv *priv = netdev_priv(netdev);
1062 struct phy_device *phy_dev = priv->phy;
1064 if (!netif_running(netdev))
1070 return phy_mii_ioctl(phy_dev, ifr, cmd);
1073 /* use only for netconsole to poll with the device without interrupt */
1074 #ifdef CONFIG_NET_POLL_CONTROLLER
1075 void hns_nic_poll_controller(struct net_device *ndev)
1077 struct hns_nic_priv *priv = netdev_priv(ndev);
1078 unsigned long flags;
1081 local_irq_save(flags);
1082 for (i = 0; i < priv->ae_handle->q_num * 2; i++)
1083 napi_schedule(&priv->ring_data[i].napi);
1084 local_irq_restore(flags);
1088 static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb,
1089 struct net_device *ndev)
1091 struct hns_nic_priv *priv = netdev_priv(ndev);
1094 assert(skb->queue_mapping < ndev->ae_handle->q_num);
1095 ret = hns_nic_net_xmit_hw(ndev, skb,
1096 &tx_ring_data(priv, skb->queue_mapping));
1097 if (ret == NETDEV_TX_OK) {
1098 ndev->trans_start = jiffies;
1099 ndev->stats.tx_bytes += skb->len;
1100 ndev->stats.tx_packets++;
1102 return (netdev_tx_t)ret;
1105 static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu)
1107 struct hns_nic_priv *priv = netdev_priv(ndev);
1108 struct hnae_handle *h = priv->ae_handle;
1111 /* MTU < 68 is an error and causes problems on some kernels */
1115 if (!h->dev->ops->set_mtu)
1118 if (netif_running(ndev)) {
1119 (void)hns_nic_net_stop(ndev);
1122 ret = h->dev->ops->set_mtu(h, new_mtu);
1124 netdev_err(ndev, "set mtu fail, return value %d\n",
1127 if (hns_nic_net_open(ndev))
1128 netdev_err(ndev, "hns net open fail\n");
1130 ret = h->dev->ops->set_mtu(h, new_mtu);
1134 ndev->mtu = new_mtu;
1140 * nic_set_multicast_list - set mutl mac address
1141 * @netdev: net device
1146 void hns_set_multicast_list(struct net_device *ndev)
1148 struct hns_nic_priv *priv = netdev_priv(ndev);
1149 struct hnae_handle *h = priv->ae_handle;
1150 struct netdev_hw_addr *ha = NULL;
1153 netdev_err(ndev, "hnae handle is null\n");
1157 if (h->dev->ops->set_mc_addr) {
1158 netdev_for_each_mc_addr(ha, ndev)
1159 if (h->dev->ops->set_mc_addr(h, ha->addr))
1160 netdev_err(ndev, "set multicast fail\n");
1164 struct rtnl_link_stats64 *hns_nic_get_stats64(struct net_device *ndev,
1165 struct rtnl_link_stats64 *stats)
1172 struct hns_nic_priv *priv = netdev_priv(ndev);
1173 struct hnae_handle *h = priv->ae_handle;
1175 for (idx = 0; idx < h->q_num; idx++) {
1176 tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes;
1177 tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts;
1178 rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes;
1179 rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts;
1182 stats->tx_bytes = tx_bytes;
1183 stats->tx_packets = tx_pkts;
1184 stats->rx_bytes = rx_bytes;
1185 stats->rx_packets = rx_pkts;
1187 stats->rx_errors = ndev->stats.rx_errors;
1188 stats->multicast = ndev->stats.multicast;
1189 stats->rx_length_errors = ndev->stats.rx_length_errors;
1190 stats->rx_crc_errors = ndev->stats.rx_crc_errors;
1191 stats->rx_missed_errors = ndev->stats.rx_missed_errors;
1193 stats->tx_errors = ndev->stats.tx_errors;
1194 stats->rx_dropped = ndev->stats.rx_dropped;
1195 stats->tx_dropped = ndev->stats.tx_dropped;
1196 stats->collisions = ndev->stats.collisions;
1197 stats->rx_over_errors = ndev->stats.rx_over_errors;
1198 stats->rx_frame_errors = ndev->stats.rx_frame_errors;
1199 stats->rx_fifo_errors = ndev->stats.rx_fifo_errors;
1200 stats->tx_aborted_errors = ndev->stats.tx_aborted_errors;
1201 stats->tx_carrier_errors = ndev->stats.tx_carrier_errors;
1202 stats->tx_fifo_errors = ndev->stats.tx_fifo_errors;
1203 stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors;
1204 stats->tx_window_errors = ndev->stats.tx_window_errors;
1205 stats->rx_compressed = ndev->stats.rx_compressed;
1206 stats->tx_compressed = ndev->stats.tx_compressed;
1211 static const struct net_device_ops hns_nic_netdev_ops = {
1212 .ndo_open = hns_nic_net_open,
1213 .ndo_stop = hns_nic_net_stop,
1214 .ndo_start_xmit = hns_nic_net_xmit,
1215 .ndo_tx_timeout = hns_nic_net_timeout,
1216 .ndo_set_mac_address = hns_nic_net_set_mac_address,
1217 .ndo_change_mtu = hns_nic_change_mtu,
1218 .ndo_do_ioctl = hns_nic_do_ioctl,
1219 .ndo_get_stats64 = hns_nic_get_stats64,
1220 #ifdef CONFIG_NET_POLL_CONTROLLER
1221 .ndo_poll_controller = hns_nic_poll_controller,
1223 .ndo_set_rx_mode = hns_set_multicast_list,
1226 static void hns_nic_update_link_status(struct net_device *netdev)
1228 struct hns_nic_priv *priv = netdev_priv(netdev);
1230 struct hnae_handle *h = priv->ae_handle;
1234 if (!genphy_update_link(priv->phy))
1235 state = priv->phy->link;
1239 state = state && h->dev->ops->get_status(h);
1241 if (state != priv->link) {
1243 netif_carrier_on(netdev);
1244 netif_tx_wake_all_queues(netdev);
1245 netdev_info(netdev, "link up\n");
1247 netif_carrier_off(netdev);
1248 netdev_info(netdev, "link down\n");
1254 /* for dumping key regs*/
1255 static void hns_nic_dump(struct hns_nic_priv *priv)
1257 struct hnae_handle *h = priv->ae_handle;
1258 struct hnae_ae_ops *ops = h->dev->ops;
1259 u32 *data, reg_num, i;
1261 if (ops->get_regs_len && ops->get_regs) {
1262 reg_num = ops->get_regs_len(priv->ae_handle);
1263 reg_num = (reg_num + 3ul) & ~3ul;
1264 data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL);
1266 ops->get_regs(priv->ae_handle, data);
1267 for (i = 0; i < reg_num; i += 4)
1268 pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
1269 i, data[i], data[i + 1],
1270 data[i + 2], data[i + 3]);
1275 for (i = 0; i < h->q_num; i++) {
1276 pr_info("tx_queue%d_next_to_clean:%d\n",
1277 i, h->qs[i]->tx_ring.next_to_clean);
1278 pr_info("tx_queue%d_next_to_use:%d\n",
1279 i, h->qs[i]->tx_ring.next_to_use);
1280 pr_info("rx_queue%d_next_to_clean:%d\n",
1281 i, h->qs[i]->rx_ring.next_to_clean);
1282 pr_info("rx_queue%d_next_to_use:%d\n",
1283 i, h->qs[i]->rx_ring.next_to_use);
1287 /* for resetting suntask*/
1288 static void hns_nic_reset_subtask(struct hns_nic_priv *priv)
1290 enum hnae_port_type type = priv->ae_handle->port_type;
1292 if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state))
1294 clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
1296 /* If we're already down, removing or resetting, just bail */
1297 if (test_bit(NIC_STATE_DOWN, &priv->state) ||
1298 test_bit(NIC_STATE_REMOVING, &priv->state) ||
1299 test_bit(NIC_STATE_RESETTING, &priv->state))
1303 netdev_err(priv->netdev, "Reset %s port\n",
1304 (type == HNAE_PORT_DEBUG ? "debug" : "business"));
1307 if (type == HNAE_PORT_DEBUG) {
1308 hns_nic_net_reinit(priv->netdev);
1310 hns_nic_net_down(priv->netdev);
1311 hns_nic_net_reset(priv->netdev);
1316 /* for doing service complete*/
1317 static void hns_nic_service_event_complete(struct hns_nic_priv *priv)
1319 assert(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state));
1321 smp_mb__before_atomic();
1322 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
1325 static void hns_nic_service_task(struct work_struct *work)
1327 struct hns_nic_priv *priv
1328 = container_of(work, struct hns_nic_priv, service_task);
1329 struct hnae_handle *h = priv->ae_handle;
1331 hns_nic_update_link_status(priv->netdev);
1332 h->dev->ops->update_led_status(h);
1333 hns_nic_update_stats(priv->netdev);
1335 hns_nic_reset_subtask(priv);
1336 hns_nic_service_event_complete(priv);
1339 static void hns_nic_task_schedule(struct hns_nic_priv *priv)
1341 if (!test_bit(NIC_STATE_DOWN, &priv->state) &&
1342 !test_bit(NIC_STATE_REMOVING, &priv->state) &&
1343 !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state))
1344 (void)schedule_work(&priv->service_task);
1347 static void hns_nic_service_timer(unsigned long data)
1349 struct hns_nic_priv *priv = (struct hns_nic_priv *)data;
1351 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
1353 hns_nic_task_schedule(priv);
1357 * hns_tx_timeout_reset - initiate reset due to Tx timeout
1358 * @priv: driver private struct
1360 static void hns_tx_timeout_reset(struct hns_nic_priv *priv)
1362 /* Do the reset outside of interrupt context */
1363 if (!test_bit(NIC_STATE_DOWN, &priv->state)) {
1364 set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
1365 netdev_warn(priv->netdev,
1366 "initiating reset due to tx timeout(%llu,0x%lx)\n",
1367 priv->tx_timeout_count, priv->state);
1368 priv->tx_timeout_count++;
1369 hns_nic_task_schedule(priv);
1373 static int hns_nic_init_ring_data(struct hns_nic_priv *priv)
1375 struct hnae_handle *h = priv->ae_handle;
1376 struct hns_nic_ring_data *rd;
1379 if (h->q_num > NIC_MAX_Q_PER_VF) {
1380 netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num);
1384 priv->ring_data = kzalloc(h->q_num * sizeof(*priv->ring_data) * 2,
1386 if (!priv->ring_data)
1389 for (i = 0; i < h->q_num; i++) {
1390 rd = &priv->ring_data[i];
1391 rd->queue_index = i;
1392 rd->ring = &h->qs[i]->tx_ring;
1393 rd->poll_one = hns_nic_tx_poll_one;
1394 rd->fini_process = hns_nic_tx_fini_pro;
1396 netif_napi_add(priv->netdev, &rd->napi,
1397 hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM);
1398 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1400 for (i = h->q_num; i < h->q_num * 2; i++) {
1401 rd = &priv->ring_data[i];
1402 rd->queue_index = i - h->q_num;
1403 rd->ring = &h->qs[i - h->q_num]->rx_ring;
1404 rd->poll_one = hns_nic_rx_poll_one;
1405 rd->ex_process = hns_nic_rx_up_pro;
1406 rd->fini_process = hns_nic_rx_fini_pro;
1408 netif_napi_add(priv->netdev, &rd->napi,
1409 hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM);
1410 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1416 static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv)
1418 struct hnae_handle *h = priv->ae_handle;
1421 for (i = 0; i < h->q_num * 2; i++) {
1422 netif_napi_del(&priv->ring_data[i].napi);
1423 if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) {
1424 irq_set_affinity_hint(priv->ring_data[i].ring->irq,
1426 free_irq(priv->ring_data[i].ring->irq,
1427 &priv->ring_data[i]);
1430 priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1432 kfree(priv->ring_data);
1435 static int hns_nic_try_get_ae(struct net_device *ndev)
1437 struct hns_nic_priv *priv = netdev_priv(ndev);
1438 struct hnae_handle *h;
1441 h = hnae_get_handle(&priv->netdev->dev,
1442 priv->ae_name, priv->port_id, NULL);
1443 if (IS_ERR_OR_NULL(h)) {
1445 dev_dbg(priv->dev, "has not handle, register notifier!\n");
1448 priv->ae_handle = h;
1450 ret = hns_nic_init_phy(ndev, h);
1452 dev_err(priv->dev, "probe phy device fail!\n");
1456 ret = hns_nic_init_ring_data(priv);
1459 goto out_init_ring_data;
1462 ret = register_netdev(ndev);
1464 dev_err(priv->dev, "probe register netdev fail!\n");
1465 goto out_reg_ndev_fail;
1470 hns_nic_uninit_ring_data(priv);
1471 priv->ring_data = NULL;
1474 hnae_put_handle(priv->ae_handle);
1475 priv->ae_handle = NULL;
1480 static int hns_nic_notifier_action(struct notifier_block *nb,
1481 unsigned long action, void *data)
1483 struct hns_nic_priv *priv =
1484 container_of(nb, struct hns_nic_priv, notifier_block);
1486 assert(action == HNAE_AE_REGISTER);
1488 if (!hns_nic_try_get_ae(priv->netdev)) {
1489 hnae_unregister_notifier(&priv->notifier_block);
1490 priv->notifier_block.notifier_call = NULL;
1495 static int hns_nic_dev_probe(struct platform_device *pdev)
1497 struct device *dev = &pdev->dev;
1498 struct net_device *ndev;
1499 struct hns_nic_priv *priv;
1500 struct device_node *node = dev->of_node;
1503 ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF);
1507 platform_set_drvdata(pdev, ndev);
1509 priv = netdev_priv(ndev);
1511 priv->netdev = ndev;
1513 if (of_device_is_compatible(node, "hisilicon,hns-nic-v2"))
1514 priv->enet_ver = AE_VERSION_2;
1516 priv->enet_ver = AE_VERSION_1;
1518 ret = of_property_read_string(node, "ae-name", &priv->ae_name);
1520 goto out_read_string_fail;
1522 ret = of_property_read_u32(node, "port-id", &priv->port_id);
1524 goto out_read_string_fail;
1526 hns_init_mac_addr(ndev);
1528 ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT;
1529 ndev->priv_flags |= IFF_UNICAST_FLT;
1530 ndev->netdev_ops = &hns_nic_netdev_ops;
1531 hns_ethtool_set_ops(ndev);
1532 ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1533 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
1535 ndev->vlan_features |=
1536 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM;
1537 ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO;
1539 SET_NETDEV_DEV(ndev, dev);
1541 if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)))
1542 dev_dbg(dev, "set mask to 64bit\n");
1544 dev_err(dev, "set mask to 32bit fail!\n");
1546 /* carrier off reporting is important to ethtool even BEFORE open */
1547 netif_carrier_off(ndev);
1549 setup_timer(&priv->service_timer, hns_nic_service_timer,
1550 (unsigned long)priv);
1551 INIT_WORK(&priv->service_task, hns_nic_service_task);
1553 set_bit(NIC_STATE_SERVICE_INITED, &priv->state);
1554 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
1555 set_bit(NIC_STATE_DOWN, &priv->state);
1557 if (hns_nic_try_get_ae(priv->netdev)) {
1558 priv->notifier_block.notifier_call = hns_nic_notifier_action;
1559 ret = hnae_register_notifier(&priv->notifier_block);
1561 dev_err(dev, "register notifier fail!\n");
1562 goto out_notify_fail;
1564 dev_dbg(dev, "has not handle, register notifier!\n");
1570 (void)cancel_work_sync(&priv->service_task);
1571 out_read_string_fail:
1576 static int hns_nic_dev_remove(struct platform_device *pdev)
1578 struct net_device *ndev = platform_get_drvdata(pdev);
1579 struct hns_nic_priv *priv = netdev_priv(ndev);
1581 if (ndev->reg_state != NETREG_UNINITIALIZED)
1582 unregister_netdev(ndev);
1584 if (priv->ring_data)
1585 hns_nic_uninit_ring_data(priv);
1586 priv->ring_data = NULL;
1589 phy_disconnect(priv->phy);
1592 if (!IS_ERR_OR_NULL(priv->ae_handle))
1593 hnae_put_handle(priv->ae_handle);
1594 priv->ae_handle = NULL;
1595 if (priv->notifier_block.notifier_call)
1596 hnae_unregister_notifier(&priv->notifier_block);
1597 priv->notifier_block.notifier_call = NULL;
1599 set_bit(NIC_STATE_REMOVING, &priv->state);
1600 (void)cancel_work_sync(&priv->service_task);
1606 static const struct of_device_id hns_enet_of_match[] = {
1607 {.compatible = "hisilicon,hns-nic-v1",},
1608 {.compatible = "hisilicon,hns-nic-v2",},
1612 MODULE_DEVICE_TABLE(of, hns_enet_of_match);
1614 static struct platform_driver hns_nic_dev_driver = {
1617 .owner = THIS_MODULE,
1618 .of_match_table = hns_enet_of_match,
1620 .probe = hns_nic_dev_probe,
1621 .remove = hns_nic_dev_remove,
1624 module_platform_driver(hns_nic_dev_driver);
1626 MODULE_DESCRIPTION("HISILICON HNS Ethernet driver");
1627 MODULE_AUTHOR("Hisilicon, Inc.");
1628 MODULE_LICENSE("GPL");
1629 MODULE_ALIAS("platform:hns-nic");