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
36 #define HNS_BUFFER_SIZE_2048 2048
38 #define BD_MAX_SEND_SIZE 8191
39 #define SKB_TMP_LEN(SKB) \
40 (((SKB)->transport_header - (SKB)->mac_header) + tcp_hdrlen(SKB))
42 static void fill_v2_desc(struct hnae_ring *ring, void *priv,
43 int size, dma_addr_t dma, int frag_end,
44 int buf_num, enum hns_desc_type type, int mtu)
46 struct hnae_desc *desc = &ring->desc[ring->next_to_use];
47 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
49 struct ipv6hdr *ipv6hdr;
61 desc_cb->length = size;
65 desc->addr = cpu_to_le64(dma);
66 desc->tx.send_size = cpu_to_le16((u16)size);
68 /* config bd buffer end */
69 hnae_set_bit(rrcfv, HNSV2_TXD_VLD_B, 1);
70 hnae_set_field(bn_pid, HNSV2_TXD_BUFNUM_M, 0, buf_num - 1);
72 /* fill port_id in the tx bd for sending management pkts */
73 hnae_set_field(bn_pid, HNSV2_TXD_PORTID_M,
74 HNSV2_TXD_PORTID_S, ring->q->handle->dport_id);
76 if (type == DESC_TYPE_SKB) {
77 skb = (struct sk_buff *)priv;
79 if (skb->ip_summed == CHECKSUM_PARTIAL) {
80 skb_reset_mac_len(skb);
81 protocol = skb->protocol;
84 if (protocol == htons(ETH_P_8021Q)) {
85 ip_offset += VLAN_HLEN;
86 protocol = vlan_get_protocol(skb);
87 skb->protocol = protocol;
90 if (skb->protocol == htons(ETH_P_IP)) {
92 hnae_set_bit(rrcfv, HNSV2_TXD_L3CS_B, 1);
93 hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1);
95 /* check for tcp/udp header */
96 if (iphdr->protocol == IPPROTO_TCP &&
100 l4_len = tcp_hdrlen(skb);
101 mss = skb_shinfo(skb)->gso_size;
102 paylen = skb->len - SKB_TMP_LEN(skb);
104 } else if (skb->protocol == htons(ETH_P_IPV6)) {
105 hnae_set_bit(tvsvsn, HNSV2_TXD_IPV6_B, 1);
106 ipv6hdr = ipv6_hdr(skb);
107 hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1);
109 /* check for tcp/udp header */
110 if (ipv6hdr->nexthdr == IPPROTO_TCP &&
111 skb_is_gso(skb) && skb_is_gso_v6(skb)) {
114 l4_len = tcp_hdrlen(skb);
115 mss = skb_shinfo(skb)->gso_size;
116 paylen = skb->len - SKB_TMP_LEN(skb);
119 desc->tx.ip_offset = ip_offset;
120 desc->tx.tse_vlan_snap_v6_sctp_nth = tvsvsn;
121 desc->tx.mss = cpu_to_le16(mss);
122 desc->tx.l4_len = l4_len;
123 desc->tx.paylen = cpu_to_le16(paylen);
127 hnae_set_bit(rrcfv, HNSV2_TXD_FE_B, frag_end);
129 desc->tx.bn_pid = bn_pid;
130 desc->tx.ra_ri_cs_fe_vld = rrcfv;
132 ring_ptr_move_fw(ring, next_to_use);
135 static const struct acpi_device_id hns_enet_acpi_match[] = {
140 MODULE_DEVICE_TABLE(acpi, hns_enet_acpi_match);
142 static void fill_desc(struct hnae_ring *ring, void *priv,
143 int size, dma_addr_t dma, int frag_end,
144 int buf_num, enum hns_desc_type type, int mtu)
146 struct hnae_desc *desc = &ring->desc[ring->next_to_use];
147 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
151 u32 asid_bufnum_pid = 0;
152 u32 flag_ipoffset = 0;
154 desc_cb->priv = priv;
155 desc_cb->length = size;
157 desc_cb->type = type;
159 desc->addr = cpu_to_le64(dma);
160 desc->tx.send_size = cpu_to_le16((u16)size);
162 /*config bd buffer end */
163 flag_ipoffset |= 1 << HNS_TXD_VLD_B;
165 asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S;
167 if (type == DESC_TYPE_SKB) {
168 skb = (struct sk_buff *)priv;
170 if (skb->ip_summed == CHECKSUM_PARTIAL) {
171 protocol = skb->protocol;
172 ip_offset = ETH_HLEN;
174 /*if it is a SW VLAN check the next protocol*/
175 if (protocol == htons(ETH_P_8021Q)) {
176 ip_offset += VLAN_HLEN;
177 protocol = vlan_get_protocol(skb);
178 skb->protocol = protocol;
181 if (skb->protocol == htons(ETH_P_IP)) {
182 flag_ipoffset |= 1 << HNS_TXD_L3CS_B;
183 /* check for tcp/udp header */
184 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
186 } else if (skb->protocol == htons(ETH_P_IPV6)) {
187 /* ipv6 has not l3 cs, check for L4 header */
188 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
191 flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S;
195 flag_ipoffset |= frag_end << HNS_TXD_FE_B;
197 desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid);
198 desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset);
200 ring_ptr_move_fw(ring, next_to_use);
203 static void unfill_desc(struct hnae_ring *ring)
205 ring_ptr_move_bw(ring, next_to_use);
208 static int hns_nic_maybe_stop_tx(
209 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
211 struct sk_buff *skb = *out_skb;
212 struct sk_buff *new_skb = NULL;
215 /* no. of segments (plus a header) */
216 buf_num = skb_shinfo(skb)->nr_frags + 1;
218 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
219 if (ring_space(ring) < 1)
222 new_skb = skb_copy(skb, GFP_ATOMIC);
226 dev_kfree_skb_any(skb);
229 } else if (buf_num > ring_space(ring)) {
237 static int hns_nic_maybe_stop_tso(
238 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
244 struct sk_buff *skb = *out_skb;
245 struct sk_buff *new_skb = NULL;
246 struct skb_frag_struct *frag;
248 size = skb_headlen(skb);
249 buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
251 frag_num = skb_shinfo(skb)->nr_frags;
252 for (i = 0; i < frag_num; i++) {
253 frag = &skb_shinfo(skb)->frags[i];
254 size = skb_frag_size(frag);
255 buf_num += (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
258 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
259 buf_num = (skb->len + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
260 if (ring_space(ring) < buf_num)
262 /* manual split the send packet */
263 new_skb = skb_copy(skb, GFP_ATOMIC);
266 dev_kfree_skb_any(skb);
269 } else if (ring_space(ring) < buf_num) {
277 static void fill_tso_desc(struct hnae_ring *ring, void *priv,
278 int size, dma_addr_t dma, int frag_end,
279 int buf_num, enum hns_desc_type type, int mtu)
285 frag_buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
286 sizeoflast = size % BD_MAX_SEND_SIZE;
287 sizeoflast = sizeoflast ? sizeoflast : BD_MAX_SEND_SIZE;
289 /* when the frag size is bigger than hardware, split this frag */
290 for (k = 0; k < frag_buf_num; k++)
291 fill_v2_desc(ring, priv,
292 (k == frag_buf_num - 1) ?
293 sizeoflast : BD_MAX_SEND_SIZE,
294 dma + BD_MAX_SEND_SIZE * k,
295 frag_end && (k == frag_buf_num - 1) ? 1 : 0,
297 (type == DESC_TYPE_SKB && !k) ?
298 DESC_TYPE_SKB : DESC_TYPE_PAGE,
302 int hns_nic_net_xmit_hw(struct net_device *ndev,
304 struct hns_nic_ring_data *ring_data)
306 struct hns_nic_priv *priv = netdev_priv(ndev);
307 struct device *dev = priv->dev;
308 struct hnae_ring *ring = ring_data->ring;
309 struct netdev_queue *dev_queue;
310 struct skb_frag_struct *frag;
314 int size, next_to_use;
317 switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) {
319 ring->stats.tx_busy++;
320 goto out_net_tx_busy;
322 ring->stats.sw_err_cnt++;
323 netdev_err(ndev, "no memory to xmit!\n");
329 /* no. of segments (plus a header) */
330 seg_num = skb_shinfo(skb)->nr_frags + 1;
331 next_to_use = ring->next_to_use;
333 /* fill the first part */
334 size = skb_headlen(skb);
335 dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE);
336 if (dma_mapping_error(dev, dma)) {
337 netdev_err(ndev, "TX head DMA map failed\n");
338 ring->stats.sw_err_cnt++;
341 priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0,
342 buf_num, DESC_TYPE_SKB, ndev->mtu);
344 /* fill the fragments */
345 for (i = 1; i < seg_num; i++) {
346 frag = &skb_shinfo(skb)->frags[i - 1];
347 size = skb_frag_size(frag);
348 dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
349 if (dma_mapping_error(dev, dma)) {
350 netdev_err(ndev, "TX frag(%d) DMA map failed\n", i);
351 ring->stats.sw_err_cnt++;
352 goto out_map_frag_fail;
354 priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma,
355 seg_num - 1 == i ? 1 : 0, buf_num,
356 DESC_TYPE_PAGE, ndev->mtu);
359 /*complete translate all packets*/
360 dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping);
361 netdev_tx_sent_queue(dev_queue, skb->len);
363 wmb(); /* commit all data before submit */
364 assert(skb->queue_mapping < priv->ae_handle->q_num);
365 hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num);
366 ring->stats.tx_pkts++;
367 ring->stats.tx_bytes += skb->len;
373 while (ring->next_to_use != next_to_use) {
375 if (ring->next_to_use != next_to_use)
377 ring->desc_cb[ring->next_to_use].dma,
378 ring->desc_cb[ring->next_to_use].length,
381 dma_unmap_single(dev,
382 ring->desc_cb[next_to_use].dma,
383 ring->desc_cb[next_to_use].length,
389 dev_kfree_skb_any(skb);
394 netif_stop_subqueue(ndev, skb->queue_mapping);
396 /* Herbert's original patch had:
397 * smp_mb__after_netif_stop_queue();
398 * but since that doesn't exist yet, just open code it.
401 return NETDEV_TX_BUSY;
405 * hns_nic_get_headlen - determine size of header for RSC/LRO/GRO/FCOE
406 * @data: pointer to the start of the headers
407 * @max: total length of section to find headers in
409 * This function is meant to determine the length of headers that will
410 * be recognized by hardware for LRO, GRO, and RSC offloads. The main
411 * motivation of doing this is to only perform one pull for IPv4 TCP
412 * packets so that we can do basic things like calculating the gso_size
413 * based on the average data per packet.
415 static unsigned int hns_nic_get_headlen(unsigned char *data, u32 flag,
416 unsigned int max_size)
418 unsigned char *network;
421 /* this should never happen, but better safe than sorry */
422 if (max_size < ETH_HLEN)
425 /* initialize network frame pointer */
428 /* set first protocol and move network header forward */
431 /* handle any vlan tag if present */
432 if (hnae_get_field(flag, HNS_RXD_VLAN_M, HNS_RXD_VLAN_S)
433 == HNS_RX_FLAG_VLAN_PRESENT) {
434 if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN))
437 network += VLAN_HLEN;
440 /* handle L3 protocols */
441 if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S)
442 == HNS_RX_FLAG_L3ID_IPV4) {
443 if ((typeof(max_size))(network - data) >
444 (max_size - sizeof(struct iphdr)))
447 /* access ihl as a u8 to avoid unaligned access on ia64 */
448 hlen = (network[0] & 0x0F) << 2;
450 /* verify hlen meets minimum size requirements */
451 if (hlen < sizeof(struct iphdr))
452 return network - data;
454 /* record next protocol if header is present */
455 } else if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S)
456 == HNS_RX_FLAG_L3ID_IPV6) {
457 if ((typeof(max_size))(network - data) >
458 (max_size - sizeof(struct ipv6hdr)))
461 /* record next protocol */
462 hlen = sizeof(struct ipv6hdr);
464 return network - data;
467 /* relocate pointer to start of L4 header */
470 /* finally sort out TCP/UDP */
471 if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S)
472 == HNS_RX_FLAG_L4ID_TCP) {
473 if ((typeof(max_size))(network - data) >
474 (max_size - sizeof(struct tcphdr)))
477 /* access doff as a u8 to avoid unaligned access on ia64 */
478 hlen = (network[12] & 0xF0) >> 2;
480 /* verify hlen meets minimum size requirements */
481 if (hlen < sizeof(struct tcphdr))
482 return network - data;
485 } else if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S)
486 == HNS_RX_FLAG_L4ID_UDP) {
487 if ((typeof(max_size))(network - data) >
488 (max_size - sizeof(struct udphdr)))
491 network += sizeof(struct udphdr);
494 /* If everything has gone correctly network should be the
495 * data section of the packet and will be the end of the header.
496 * If not then it probably represents the end of the last recognized
499 if ((typeof(max_size))(network - data) < max_size)
500 return network - data;
505 static void hns_nic_reuse_page(struct sk_buff *skb, int i,
506 struct hnae_ring *ring, int pull_len,
507 struct hnae_desc_cb *desc_cb)
509 struct hnae_desc *desc;
514 twobufs = ((PAGE_SIZE < 8192) && hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048);
516 desc = &ring->desc[ring->next_to_clean];
517 size = le16_to_cpu(desc->rx.size);
520 truesize = hnae_buf_size(ring);
522 truesize = ALIGN(size, L1_CACHE_BYTES);
523 last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
526 skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len,
527 size - pull_len, truesize - pull_len);
529 /* avoid re-using remote pages,flag default unreuse */
530 if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id()))
534 /* if we are only owner of page we can reuse it */
535 if (likely(page_count(desc_cb->priv) == 1)) {
536 /* flip page offset to other buffer */
537 desc_cb->page_offset ^= truesize;
539 desc_cb->reuse_flag = 1;
540 /* bump ref count on page before it is given*/
541 get_page(desc_cb->priv);
546 /* move offset up to the next cache line */
547 desc_cb->page_offset += truesize;
549 if (desc_cb->page_offset <= last_offset) {
550 desc_cb->reuse_flag = 1;
551 /* bump ref count on page before it is given*/
552 get_page(desc_cb->priv);
556 static void get_v2rx_desc_bnum(u32 bnum_flag, int *out_bnum)
558 *out_bnum = hnae_get_field(bnum_flag,
559 HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S) + 1;
562 static void get_rx_desc_bnum(u32 bnum_flag, int *out_bnum)
564 *out_bnum = hnae_get_field(bnum_flag,
565 HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S);
568 static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data,
569 struct sk_buff **out_skb, int *out_bnum)
571 struct hnae_ring *ring = ring_data->ring;
572 struct net_device *ndev = ring_data->napi.dev;
573 struct hns_nic_priv *priv = netdev_priv(ndev);
575 struct hnae_desc *desc;
576 struct hnae_desc_cb *desc_cb;
582 desc = &ring->desc[ring->next_to_clean];
583 desc_cb = &ring->desc_cb[ring->next_to_clean];
587 va = (unsigned char *)desc_cb->buf + desc_cb->page_offset;
589 /* prefetch first cache line of first page */
591 #if L1_CACHE_BYTES < 128
592 prefetch(va + L1_CACHE_BYTES);
595 skb = *out_skb = napi_alloc_skb(&ring_data->napi,
597 if (unlikely(!skb)) {
598 netdev_err(ndev, "alloc rx skb fail\n");
599 ring->stats.sw_err_cnt++;
603 prefetchw(skb->data);
604 length = le16_to_cpu(desc->rx.pkt_len);
605 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
606 priv->ops.get_rxd_bnum(bnum_flag, &bnum);
609 if (length <= HNS_RX_HEAD_SIZE) {
610 memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
612 /* we can reuse buffer as-is, just make sure it is local */
613 if (likely(page_to_nid(desc_cb->priv) == numa_node_id()))
614 desc_cb->reuse_flag = 1;
615 else /* this page cannot be reused so discard it */
616 put_page(desc_cb->priv);
618 ring_ptr_move_fw(ring, next_to_clean);
620 if (unlikely(bnum != 1)) { /* check err*/
625 ring->stats.seg_pkt_cnt++;
627 pull_len = hns_nic_get_headlen(va, bnum_flag, HNS_RX_HEAD_SIZE);
628 memcpy(__skb_put(skb, pull_len), va,
629 ALIGN(pull_len, sizeof(long)));
631 hns_nic_reuse_page(skb, 0, ring, pull_len, desc_cb);
632 ring_ptr_move_fw(ring, next_to_clean);
634 if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/
638 for (i = 1; i < bnum; i++) {
639 desc = &ring->desc[ring->next_to_clean];
640 desc_cb = &ring->desc_cb[ring->next_to_clean];
642 hns_nic_reuse_page(skb, i, ring, 0, desc_cb);
643 ring_ptr_move_fw(ring, next_to_clean);
647 /* check except process, free skb and jump the desc */
648 if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) {
650 *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/
651 netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n",
652 bnum, ring->max_desc_num_per_pkt,
653 length, (int)MAX_SKB_FRAGS,
654 ((u64 *)desc)[0], ((u64 *)desc)[1]);
655 ring->stats.err_bd_num++;
656 dev_kfree_skb_any(skb);
660 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
662 if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) {
663 netdev_err(ndev, "no valid bd,%016llx,%016llx\n",
664 ((u64 *)desc)[0], ((u64 *)desc)[1]);
665 ring->stats.non_vld_descs++;
666 dev_kfree_skb_any(skb);
670 if (unlikely((!desc->rx.pkt_len) ||
671 hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) {
672 ring->stats.err_pkt_len++;
673 dev_kfree_skb_any(skb);
677 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) {
678 ring->stats.l2_err++;
679 dev_kfree_skb_any(skb);
683 ring->stats.rx_pkts++;
684 ring->stats.rx_bytes += skb->len;
686 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L3E_B) ||
687 hnae_get_bit(bnum_flag, HNS_RXD_L4E_B))) {
688 ring->stats.l3l4_csum_err++;
692 skb->ip_summed = CHECKSUM_UNNECESSARY;
698 hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count)
701 struct hnae_desc_cb res_cbs;
702 struct hnae_desc_cb *desc_cb;
703 struct hnae_ring *ring = ring_data->ring;
704 struct net_device *ndev = ring_data->napi.dev;
706 for (i = 0; i < cleand_count; i++) {
707 desc_cb = &ring->desc_cb[ring->next_to_use];
708 if (desc_cb->reuse_flag) {
709 ring->stats.reuse_pg_cnt++;
710 hnae_reuse_buffer(ring, ring->next_to_use);
712 ret = hnae_reserve_buffer_map(ring, &res_cbs);
714 ring->stats.sw_err_cnt++;
715 netdev_err(ndev, "hnae reserve buffer map failed.\n");
718 hnae_replace_buffer(ring, ring->next_to_use, &res_cbs);
721 ring_ptr_move_fw(ring, next_to_use);
724 wmb(); /* make all data has been write before submit */
725 writel_relaxed(i, ring->io_base + RCB_REG_HEAD);
728 /* return error number for error or number of desc left to take
730 static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data,
733 struct net_device *ndev = ring_data->napi.dev;
735 skb->protocol = eth_type_trans(skb, ndev);
736 (void)napi_gro_receive(&ring_data->napi, skb);
737 ndev->last_rx = jiffies;
740 static int hns_desc_unused(struct hnae_ring *ring)
742 int ntc = ring->next_to_clean;
743 int ntu = ring->next_to_use;
745 return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu;
748 static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data,
751 struct hnae_ring *ring = ring_data->ring;
754 #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
755 int recv_pkts, recv_bds, clean_count, err;
756 int unused_count = hns_desc_unused(ring);
758 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
759 rmb(); /* make sure num taken effect before the other data is touched */
761 recv_pkts = 0, recv_bds = 0, clean_count = 0;
764 while (recv_pkts < budget && recv_bds < num) {
765 /* reuse or realloc buffers */
766 if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
767 hns_nic_alloc_rx_buffers(ring_data,
768 clean_count + unused_count);
770 unused_count = hns_desc_unused(ring);
774 err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum);
775 if (unlikely(!skb)) /* this fault cannot be repaired */
780 if (unlikely(err)) { /* do jump the err */
785 /* do update ip stack process*/
786 ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)(
792 /* make all data has been write before submit */
793 if (clean_count + unused_count > 0)
794 hns_nic_alloc_rx_buffers(ring_data,
795 clean_count + unused_count);
800 static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
802 struct hnae_ring *ring = ring_data->ring;
805 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
807 /* for hardware bug fixed */
808 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
811 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
814 napi_schedule(&ring_data->napi);
818 static void hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
820 struct hnae_ring *ring = ring_data->ring;
823 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
826 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
829 napi_schedule(&ring_data->napi);
832 static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring,
833 int *bytes, int *pkts)
835 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
837 (*pkts) += (desc_cb->type == DESC_TYPE_SKB);
838 (*bytes) += desc_cb->length;
839 /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
840 hnae_free_buffer_detach(ring, ring->next_to_clean);
842 ring_ptr_move_fw(ring, next_to_clean);
845 static int is_valid_clean_head(struct hnae_ring *ring, int h)
847 int u = ring->next_to_use;
848 int c = ring->next_to_clean;
850 if (unlikely(h > ring->desc_num))
853 assert(u > 0 && u < ring->desc_num);
854 assert(c > 0 && c < ring->desc_num);
855 assert(u != c && h != c); /* must be checked before call this func */
857 return u > c ? (h > c && h <= u) : (h > c || h <= u);
860 /* netif_tx_lock will turn down the performance, set only when necessary */
861 #ifdef CONFIG_NET_POLL_CONTROLLER
862 #define NETIF_TX_LOCK(ndev) netif_tx_lock(ndev)
863 #define NETIF_TX_UNLOCK(ndev) netif_tx_unlock(ndev)
865 #define NETIF_TX_LOCK(ndev)
866 #define NETIF_TX_UNLOCK(ndev)
868 /* reclaim all desc in one budget
869 * return error or number of desc left
871 static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
874 struct hnae_ring *ring = ring_data->ring;
875 struct net_device *ndev = ring_data->napi.dev;
876 struct netdev_queue *dev_queue;
877 struct hns_nic_priv *priv = netdev_priv(ndev);
883 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
884 rmb(); /* make sure head is ready before touch any data */
886 if (is_ring_empty(ring) || head == ring->next_to_clean) {
887 NETIF_TX_UNLOCK(ndev);
888 return 0; /* no data to poll */
891 if (!is_valid_clean_head(ring, head)) {
892 netdev_err(ndev, "wrong head (%d, %d-%d)\n", head,
893 ring->next_to_use, ring->next_to_clean);
894 ring->stats.io_err_cnt++;
895 NETIF_TX_UNLOCK(ndev);
901 while (head != ring->next_to_clean) {
902 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
903 /* issue prefetch for next Tx descriptor */
904 prefetch(&ring->desc_cb[ring->next_to_clean]);
907 NETIF_TX_UNLOCK(ndev);
909 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
910 netdev_tx_completed_queue(dev_queue, pkts, bytes);
912 if (unlikely(priv->link && !netif_carrier_ok(ndev)))
913 netif_carrier_on(ndev);
915 if (unlikely(pkts && netif_carrier_ok(ndev) &&
916 (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) {
917 /* Make sure that anybody stopping the queue after this
918 * sees the new next_to_clean.
921 if (netif_tx_queue_stopped(dev_queue) &&
922 !test_bit(NIC_STATE_DOWN, &priv->state)) {
923 netif_tx_wake_queue(dev_queue);
924 ring->stats.restart_queue++;
930 static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
932 struct hnae_ring *ring = ring_data->ring;
935 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
937 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
939 if (head != ring->next_to_clean) {
940 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
943 napi_schedule(&ring_data->napi);
947 static void hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
949 struct hnae_ring *ring = ring_data->ring;
950 int head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
952 if (head == ring->next_to_clean)
953 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
956 napi_schedule(&ring_data->napi);
959 static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
961 struct hnae_ring *ring = ring_data->ring;
962 struct net_device *ndev = ring_data->napi.dev;
963 struct netdev_queue *dev_queue;
969 head = ring->next_to_use; /* ntu :soft setted ring position*/
972 while (head != ring->next_to_clean)
973 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
975 NETIF_TX_UNLOCK(ndev);
977 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
978 netdev_tx_reset_queue(dev_queue);
981 static int hns_nic_common_poll(struct napi_struct *napi, int budget)
983 struct hns_nic_ring_data *ring_data =
984 container_of(napi, struct hns_nic_ring_data, napi);
985 int clean_complete = ring_data->poll_one(
986 ring_data, budget, ring_data->ex_process);
988 if (clean_complete >= 0 && clean_complete < budget) {
990 ring_data->fini_process(ring_data);
994 return clean_complete;
997 static irqreturn_t hns_irq_handle(int irq, void *dev)
999 struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev;
1001 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
1002 ring_data->ring, 1);
1003 napi_schedule(&ring_data->napi);
1009 *hns_nic_adjust_link - adjust net work mode by the phy stat or new param
1012 static void hns_nic_adjust_link(struct net_device *ndev)
1014 struct hns_nic_priv *priv = netdev_priv(ndev);
1015 struct hnae_handle *h = priv->ae_handle;
1019 h->dev->ops->adjust_link(h, ndev->phydev->speed,
1020 ndev->phydev->duplex);
1021 state = ndev->phydev->link;
1023 state = state && h->dev->ops->get_status(h);
1025 if (state != priv->link) {
1027 netif_carrier_on(ndev);
1028 netif_tx_wake_all_queues(ndev);
1029 netdev_info(ndev, "link up\n");
1031 netif_carrier_off(ndev);
1032 netdev_info(ndev, "link down\n");
1039 *hns_nic_init_phy - init phy
1042 * Return 0 on success, negative on failure
1044 int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h)
1046 struct phy_device *phy_dev = h->phy_dev;
1052 if (h->phy_if != PHY_INTERFACE_MODE_XGMII) {
1053 phy_dev->dev_flags = 0;
1055 ret = phy_connect_direct(ndev, phy_dev, hns_nic_adjust_link,
1058 ret = phy_attach_direct(ndev, phy_dev, 0, h->phy_if);
1063 phy_dev->supported &= h->if_support;
1064 phy_dev->advertising = phy_dev->supported;
1066 if (h->phy_if == PHY_INTERFACE_MODE_XGMII)
1067 phy_dev->autoneg = false;
1072 static int hns_nic_ring_open(struct net_device *netdev, int idx)
1074 struct hns_nic_priv *priv = netdev_priv(netdev);
1075 struct hnae_handle *h = priv->ae_handle;
1077 napi_enable(&priv->ring_data[idx].napi);
1079 enable_irq(priv->ring_data[idx].ring->irq);
1080 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0);
1085 static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p)
1087 struct hns_nic_priv *priv = netdev_priv(ndev);
1088 struct hnae_handle *h = priv->ae_handle;
1089 struct sockaddr *mac_addr = p;
1092 if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
1093 return -EADDRNOTAVAIL;
1095 ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data);
1097 netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret);
1101 memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len);
1106 void hns_nic_update_stats(struct net_device *netdev)
1108 struct hns_nic_priv *priv = netdev_priv(netdev);
1109 struct hnae_handle *h = priv->ae_handle;
1111 h->dev->ops->update_stats(h, &netdev->stats);
1114 /* set mac addr if it is configed. or leave it to the AE driver */
1115 static void hns_init_mac_addr(struct net_device *ndev)
1117 struct hns_nic_priv *priv = netdev_priv(ndev);
1119 if (!device_get_mac_address(priv->dev, ndev->dev_addr, ETH_ALEN)) {
1120 eth_hw_addr_random(ndev);
1121 dev_warn(priv->dev, "No valid mac, use random mac %pM",
1126 static void hns_nic_ring_close(struct net_device *netdev, int idx)
1128 struct hns_nic_priv *priv = netdev_priv(netdev);
1129 struct hnae_handle *h = priv->ae_handle;
1131 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1);
1132 disable_irq(priv->ring_data[idx].ring->irq);
1134 napi_disable(&priv->ring_data[idx].napi);
1137 static void hns_set_irq_affinity(struct hns_nic_priv *priv)
1139 struct hnae_handle *h = priv->ae_handle;
1140 struct hns_nic_ring_data *rd;
1145 /*diffrent irq banlance for 16core and 32core*/
1146 if (h->q_num == num_possible_cpus()) {
1147 for (i = 0; i < h->q_num * 2; i++) {
1148 rd = &priv->ring_data[i];
1149 if (cpu_online(rd->queue_index)) {
1150 cpumask_clear(&mask);
1151 cpu = rd->queue_index;
1152 cpumask_set_cpu(cpu, &mask);
1153 (void)irq_set_affinity_hint(rd->ring->irq,
1158 for (i = 0; i < h->q_num; i++) {
1159 rd = &priv->ring_data[i];
1160 if (cpu_online(rd->queue_index * 2)) {
1161 cpumask_clear(&mask);
1162 cpu = rd->queue_index * 2;
1163 cpumask_set_cpu(cpu, &mask);
1164 (void)irq_set_affinity_hint(rd->ring->irq,
1169 for (i = h->q_num; i < h->q_num * 2; i++) {
1170 rd = &priv->ring_data[i];
1171 if (cpu_online(rd->queue_index * 2 + 1)) {
1172 cpumask_clear(&mask);
1173 cpu = rd->queue_index * 2 + 1;
1174 cpumask_set_cpu(cpu, &mask);
1175 (void)irq_set_affinity_hint(rd->ring->irq,
1182 static int hns_nic_init_irq(struct hns_nic_priv *priv)
1184 struct hnae_handle *h = priv->ae_handle;
1185 struct hns_nic_ring_data *rd;
1189 for (i = 0; i < h->q_num * 2; i++) {
1190 rd = &priv->ring_data[i];
1192 if (rd->ring->irq_init_flag == RCB_IRQ_INITED)
1195 snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN,
1196 "%s-%s%d", priv->netdev->name,
1197 (i < h->q_num ? "tx" : "rx"), rd->queue_index);
1199 rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0';
1201 ret = request_irq(rd->ring->irq,
1202 hns_irq_handle, 0, rd->ring->ring_name, rd);
1204 netdev_err(priv->netdev, "request irq(%d) fail\n",
1208 disable_irq(rd->ring->irq);
1209 rd->ring->irq_init_flag = RCB_IRQ_INITED;
1212 /*set cpu affinity*/
1213 hns_set_irq_affinity(priv);
1218 static int hns_nic_net_up(struct net_device *ndev)
1220 struct hns_nic_priv *priv = netdev_priv(ndev);
1221 struct hnae_handle *h = priv->ae_handle;
1225 ret = hns_nic_init_irq(priv);
1227 netdev_err(ndev, "hns init irq failed! ret=%d\n", ret);
1231 for (i = 0; i < h->q_num * 2; i++) {
1232 ret = hns_nic_ring_open(ndev, i);
1234 goto out_has_some_queues;
1237 ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr);
1239 goto out_set_mac_addr_err;
1241 ret = h->dev->ops->start ? h->dev->ops->start(h) : 0;
1246 phy_start(ndev->phydev);
1248 clear_bit(NIC_STATE_DOWN, &priv->state);
1249 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
1254 netif_stop_queue(ndev);
1255 out_set_mac_addr_err:
1256 out_has_some_queues:
1257 for (j = i - 1; j >= 0; j--)
1258 hns_nic_ring_close(ndev, j);
1260 set_bit(NIC_STATE_DOWN, &priv->state);
1265 static void hns_nic_net_down(struct net_device *ndev)
1268 struct hnae_ae_ops *ops;
1269 struct hns_nic_priv *priv = netdev_priv(ndev);
1271 if (test_and_set_bit(NIC_STATE_DOWN, &priv->state))
1274 (void)del_timer_sync(&priv->service_timer);
1275 netif_tx_stop_all_queues(ndev);
1276 netif_carrier_off(ndev);
1277 netif_tx_disable(ndev);
1281 phy_stop(ndev->phydev);
1283 ops = priv->ae_handle->dev->ops;
1286 ops->stop(priv->ae_handle);
1288 netif_tx_stop_all_queues(ndev);
1290 for (i = priv->ae_handle->q_num - 1; i >= 0; i--) {
1291 hns_nic_ring_close(ndev, i);
1292 hns_nic_ring_close(ndev, i + priv->ae_handle->q_num);
1294 /* clean tx buffers*/
1295 hns_nic_tx_clr_all_bufs(priv->ring_data + i);
1299 void hns_nic_net_reset(struct net_device *ndev)
1301 struct hns_nic_priv *priv = netdev_priv(ndev);
1302 struct hnae_handle *handle = priv->ae_handle;
1304 while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state))
1305 usleep_range(1000, 2000);
1307 (void)hnae_reinit_handle(handle);
1309 clear_bit(NIC_STATE_RESETTING, &priv->state);
1312 void hns_nic_net_reinit(struct net_device *netdev)
1314 struct hns_nic_priv *priv = netdev_priv(netdev);
1316 netif_trans_update(priv->netdev);
1317 while (test_and_set_bit(NIC_STATE_REINITING, &priv->state))
1318 usleep_range(1000, 2000);
1320 hns_nic_net_down(netdev);
1321 hns_nic_net_reset(netdev);
1322 (void)hns_nic_net_up(netdev);
1323 clear_bit(NIC_STATE_REINITING, &priv->state);
1326 static int hns_nic_net_open(struct net_device *ndev)
1328 struct hns_nic_priv *priv = netdev_priv(ndev);
1329 struct hnae_handle *h = priv->ae_handle;
1332 if (test_bit(NIC_STATE_TESTING, &priv->state))
1336 netif_carrier_off(ndev);
1338 ret = netif_set_real_num_tx_queues(ndev, h->q_num);
1340 netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n",
1345 ret = netif_set_real_num_rx_queues(ndev, h->q_num);
1348 "netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
1352 ret = hns_nic_net_up(ndev);
1355 "hns net up fail, ret=%d!\n", ret);
1362 static int hns_nic_net_stop(struct net_device *ndev)
1364 hns_nic_net_down(ndev);
1369 static void hns_tx_timeout_reset(struct hns_nic_priv *priv);
1370 static void hns_nic_net_timeout(struct net_device *ndev)
1372 struct hns_nic_priv *priv = netdev_priv(ndev);
1374 hns_tx_timeout_reset(priv);
1377 static int hns_nic_do_ioctl(struct net_device *netdev, struct ifreq *ifr,
1380 struct phy_device *phy_dev = netdev->phydev;
1382 if (!netif_running(netdev))
1388 return phy_mii_ioctl(phy_dev, ifr, cmd);
1391 /* use only for netconsole to poll with the device without interrupt */
1392 #ifdef CONFIG_NET_POLL_CONTROLLER
1393 void hns_nic_poll_controller(struct net_device *ndev)
1395 struct hns_nic_priv *priv = netdev_priv(ndev);
1396 unsigned long flags;
1399 local_irq_save(flags);
1400 for (i = 0; i < priv->ae_handle->q_num * 2; i++)
1401 napi_schedule(&priv->ring_data[i].napi);
1402 local_irq_restore(flags);
1406 static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb,
1407 struct net_device *ndev)
1409 struct hns_nic_priv *priv = netdev_priv(ndev);
1412 assert(skb->queue_mapping < ndev->ae_handle->q_num);
1413 ret = hns_nic_net_xmit_hw(ndev, skb,
1414 &tx_ring_data(priv, skb->queue_mapping));
1415 if (ret == NETDEV_TX_OK) {
1416 netif_trans_update(ndev);
1417 ndev->stats.tx_bytes += skb->len;
1418 ndev->stats.tx_packets++;
1420 return (netdev_tx_t)ret;
1423 static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu)
1425 struct hns_nic_priv *priv = netdev_priv(ndev);
1426 struct hnae_handle *h = priv->ae_handle;
1429 /* MTU < 68 is an error and causes problems on some kernels */
1433 if (!h->dev->ops->set_mtu)
1436 if (netif_running(ndev)) {
1437 (void)hns_nic_net_stop(ndev);
1440 ret = h->dev->ops->set_mtu(h, new_mtu);
1442 netdev_err(ndev, "set mtu fail, return value %d\n",
1445 if (hns_nic_net_open(ndev))
1446 netdev_err(ndev, "hns net open fail\n");
1448 ret = h->dev->ops->set_mtu(h, new_mtu);
1452 ndev->mtu = new_mtu;
1457 static int hns_nic_set_features(struct net_device *netdev,
1458 netdev_features_t features)
1460 struct hns_nic_priv *priv = netdev_priv(netdev);
1462 switch (priv->enet_ver) {
1464 if (features & (NETIF_F_TSO | NETIF_F_TSO6))
1465 netdev_info(netdev, "enet v1 do not support tso!\n");
1468 if (features & (NETIF_F_TSO | NETIF_F_TSO6)) {
1469 priv->ops.fill_desc = fill_tso_desc;
1470 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
1471 /* The chip only support 7*4096 */
1472 netif_set_gso_max_size(netdev, 7 * 4096);
1474 priv->ops.fill_desc = fill_v2_desc;
1475 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1479 netdev->features = features;
1483 static netdev_features_t hns_nic_fix_features(
1484 struct net_device *netdev, netdev_features_t features)
1486 struct hns_nic_priv *priv = netdev_priv(netdev);
1488 switch (priv->enet_ver) {
1490 features &= ~(NETIF_F_TSO | NETIF_F_TSO6 |
1491 NETIF_F_HW_VLAN_CTAG_FILTER);
1500 * nic_set_multicast_list - set mutl mac address
1501 * @netdev: net device
1506 void hns_set_multicast_list(struct net_device *ndev)
1508 struct hns_nic_priv *priv = netdev_priv(ndev);
1509 struct hnae_handle *h = priv->ae_handle;
1510 struct netdev_hw_addr *ha = NULL;
1513 netdev_err(ndev, "hnae handle is null\n");
1517 if (h->dev->ops->set_mc_addr) {
1518 netdev_for_each_mc_addr(ha, ndev)
1519 if (h->dev->ops->set_mc_addr(h, ha->addr))
1520 netdev_err(ndev, "set multicast fail\n");
1524 void hns_nic_set_rx_mode(struct net_device *ndev)
1526 struct hns_nic_priv *priv = netdev_priv(ndev);
1527 struct hnae_handle *h = priv->ae_handle;
1529 if (h->dev->ops->set_promisc_mode) {
1530 if (ndev->flags & IFF_PROMISC)
1531 h->dev->ops->set_promisc_mode(h, 1);
1533 h->dev->ops->set_promisc_mode(h, 0);
1536 hns_set_multicast_list(ndev);
1539 struct rtnl_link_stats64 *hns_nic_get_stats64(struct net_device *ndev,
1540 struct rtnl_link_stats64 *stats)
1547 struct hns_nic_priv *priv = netdev_priv(ndev);
1548 struct hnae_handle *h = priv->ae_handle;
1550 for (idx = 0; idx < h->q_num; idx++) {
1551 tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes;
1552 tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts;
1553 rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes;
1554 rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts;
1557 stats->tx_bytes = tx_bytes;
1558 stats->tx_packets = tx_pkts;
1559 stats->rx_bytes = rx_bytes;
1560 stats->rx_packets = rx_pkts;
1562 stats->rx_errors = ndev->stats.rx_errors;
1563 stats->multicast = ndev->stats.multicast;
1564 stats->rx_length_errors = ndev->stats.rx_length_errors;
1565 stats->rx_crc_errors = ndev->stats.rx_crc_errors;
1566 stats->rx_missed_errors = ndev->stats.rx_missed_errors;
1568 stats->tx_errors = ndev->stats.tx_errors;
1569 stats->rx_dropped = ndev->stats.rx_dropped;
1570 stats->tx_dropped = ndev->stats.tx_dropped;
1571 stats->collisions = ndev->stats.collisions;
1572 stats->rx_over_errors = ndev->stats.rx_over_errors;
1573 stats->rx_frame_errors = ndev->stats.rx_frame_errors;
1574 stats->rx_fifo_errors = ndev->stats.rx_fifo_errors;
1575 stats->tx_aborted_errors = ndev->stats.tx_aborted_errors;
1576 stats->tx_carrier_errors = ndev->stats.tx_carrier_errors;
1577 stats->tx_fifo_errors = ndev->stats.tx_fifo_errors;
1578 stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors;
1579 stats->tx_window_errors = ndev->stats.tx_window_errors;
1580 stats->rx_compressed = ndev->stats.rx_compressed;
1581 stats->tx_compressed = ndev->stats.tx_compressed;
1587 hns_nic_select_queue(struct net_device *ndev, struct sk_buff *skb,
1588 void *accel_priv, select_queue_fallback_t fallback)
1590 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
1591 struct hns_nic_priv *priv = netdev_priv(ndev);
1593 /* fix hardware broadcast/multicast packets queue loopback */
1594 if (!AE_IS_VER1(priv->enet_ver) &&
1595 is_multicast_ether_addr(eth_hdr->h_dest))
1598 return fallback(ndev, skb);
1601 static const struct net_device_ops hns_nic_netdev_ops = {
1602 .ndo_open = hns_nic_net_open,
1603 .ndo_stop = hns_nic_net_stop,
1604 .ndo_start_xmit = hns_nic_net_xmit,
1605 .ndo_tx_timeout = hns_nic_net_timeout,
1606 .ndo_set_mac_address = hns_nic_net_set_mac_address,
1607 .ndo_change_mtu = hns_nic_change_mtu,
1608 .ndo_do_ioctl = hns_nic_do_ioctl,
1609 .ndo_set_features = hns_nic_set_features,
1610 .ndo_fix_features = hns_nic_fix_features,
1611 .ndo_get_stats64 = hns_nic_get_stats64,
1612 #ifdef CONFIG_NET_POLL_CONTROLLER
1613 .ndo_poll_controller = hns_nic_poll_controller,
1615 .ndo_set_rx_mode = hns_nic_set_rx_mode,
1616 .ndo_select_queue = hns_nic_select_queue,
1619 static void hns_nic_update_link_status(struct net_device *netdev)
1621 struct hns_nic_priv *priv = netdev_priv(netdev);
1623 struct hnae_handle *h = priv->ae_handle;
1626 if (h->phy_if != PHY_INTERFACE_MODE_XGMII)
1629 (void)genphy_read_status(h->phy_dev);
1631 hns_nic_adjust_link(netdev);
1634 /* for dumping key regs*/
1635 static void hns_nic_dump(struct hns_nic_priv *priv)
1637 struct hnae_handle *h = priv->ae_handle;
1638 struct hnae_ae_ops *ops = h->dev->ops;
1639 u32 *data, reg_num, i;
1641 if (ops->get_regs_len && ops->get_regs) {
1642 reg_num = ops->get_regs_len(priv->ae_handle);
1643 reg_num = (reg_num + 3ul) & ~3ul;
1644 data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL);
1646 ops->get_regs(priv->ae_handle, data);
1647 for (i = 0; i < reg_num; i += 4)
1648 pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
1649 i, data[i], data[i + 1],
1650 data[i + 2], data[i + 3]);
1655 for (i = 0; i < h->q_num; i++) {
1656 pr_info("tx_queue%d_next_to_clean:%d\n",
1657 i, h->qs[i]->tx_ring.next_to_clean);
1658 pr_info("tx_queue%d_next_to_use:%d\n",
1659 i, h->qs[i]->tx_ring.next_to_use);
1660 pr_info("rx_queue%d_next_to_clean:%d\n",
1661 i, h->qs[i]->rx_ring.next_to_clean);
1662 pr_info("rx_queue%d_next_to_use:%d\n",
1663 i, h->qs[i]->rx_ring.next_to_use);
1667 /* for resetting subtask */
1668 static void hns_nic_reset_subtask(struct hns_nic_priv *priv)
1670 enum hnae_port_type type = priv->ae_handle->port_type;
1672 if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state))
1674 clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
1676 /* If we're already down, removing or resetting, just bail */
1677 if (test_bit(NIC_STATE_DOWN, &priv->state) ||
1678 test_bit(NIC_STATE_REMOVING, &priv->state) ||
1679 test_bit(NIC_STATE_RESETTING, &priv->state))
1683 netdev_info(priv->netdev, "try to reset %s port!\n",
1684 (type == HNAE_PORT_DEBUG ? "debug" : "service"));
1687 /* put off any impending NetWatchDogTimeout */
1688 netif_trans_update(priv->netdev);
1690 if (type == HNAE_PORT_DEBUG) {
1691 hns_nic_net_reinit(priv->netdev);
1693 netif_carrier_off(priv->netdev);
1694 netif_tx_disable(priv->netdev);
1699 /* for doing service complete*/
1700 static void hns_nic_service_event_complete(struct hns_nic_priv *priv)
1702 WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state));
1704 smp_mb__before_atomic();
1705 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
1708 static void hns_nic_service_task(struct work_struct *work)
1710 struct hns_nic_priv *priv
1711 = container_of(work, struct hns_nic_priv, service_task);
1712 struct hnae_handle *h = priv->ae_handle;
1714 hns_nic_update_link_status(priv->netdev);
1715 h->dev->ops->update_led_status(h);
1716 hns_nic_update_stats(priv->netdev);
1718 hns_nic_reset_subtask(priv);
1719 hns_nic_service_event_complete(priv);
1722 static void hns_nic_task_schedule(struct hns_nic_priv *priv)
1724 if (!test_bit(NIC_STATE_DOWN, &priv->state) &&
1725 !test_bit(NIC_STATE_REMOVING, &priv->state) &&
1726 !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state))
1727 (void)schedule_work(&priv->service_task);
1730 static void hns_nic_service_timer(unsigned long data)
1732 struct hns_nic_priv *priv = (struct hns_nic_priv *)data;
1734 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
1736 hns_nic_task_schedule(priv);
1740 * hns_tx_timeout_reset - initiate reset due to Tx timeout
1741 * @priv: driver private struct
1743 static void hns_tx_timeout_reset(struct hns_nic_priv *priv)
1745 /* Do the reset outside of interrupt context */
1746 if (!test_bit(NIC_STATE_DOWN, &priv->state)) {
1747 set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
1748 netdev_warn(priv->netdev,
1749 "initiating reset due to tx timeout(%llu,0x%lx)\n",
1750 priv->tx_timeout_count, priv->state);
1751 priv->tx_timeout_count++;
1752 hns_nic_task_schedule(priv);
1756 static int hns_nic_init_ring_data(struct hns_nic_priv *priv)
1758 struct hnae_handle *h = priv->ae_handle;
1759 struct hns_nic_ring_data *rd;
1760 bool is_ver1 = AE_IS_VER1(priv->enet_ver);
1763 if (h->q_num > NIC_MAX_Q_PER_VF) {
1764 netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num);
1768 priv->ring_data = kzalloc(h->q_num * sizeof(*priv->ring_data) * 2,
1770 if (!priv->ring_data)
1773 for (i = 0; i < h->q_num; i++) {
1774 rd = &priv->ring_data[i];
1775 rd->queue_index = i;
1776 rd->ring = &h->qs[i]->tx_ring;
1777 rd->poll_one = hns_nic_tx_poll_one;
1778 rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro :
1779 hns_nic_tx_fini_pro_v2;
1781 netif_napi_add(priv->netdev, &rd->napi,
1782 hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM);
1783 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1785 for (i = h->q_num; i < h->q_num * 2; i++) {
1786 rd = &priv->ring_data[i];
1787 rd->queue_index = i - h->q_num;
1788 rd->ring = &h->qs[i - h->q_num]->rx_ring;
1789 rd->poll_one = hns_nic_rx_poll_one;
1790 rd->ex_process = hns_nic_rx_up_pro;
1791 rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro :
1792 hns_nic_rx_fini_pro_v2;
1794 netif_napi_add(priv->netdev, &rd->napi,
1795 hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM);
1796 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1802 static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv)
1804 struct hnae_handle *h = priv->ae_handle;
1807 for (i = 0; i < h->q_num * 2; i++) {
1808 netif_napi_del(&priv->ring_data[i].napi);
1809 if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) {
1810 (void)irq_set_affinity_hint(
1811 priv->ring_data[i].ring->irq,
1813 free_irq(priv->ring_data[i].ring->irq,
1814 &priv->ring_data[i]);
1817 priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1819 kfree(priv->ring_data);
1822 static void hns_nic_set_priv_ops(struct net_device *netdev)
1824 struct hns_nic_priv *priv = netdev_priv(netdev);
1825 struct hnae_handle *h = priv->ae_handle;
1827 if (AE_IS_VER1(priv->enet_ver)) {
1828 priv->ops.fill_desc = fill_desc;
1829 priv->ops.get_rxd_bnum = get_rx_desc_bnum;
1830 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1832 priv->ops.get_rxd_bnum = get_v2rx_desc_bnum;
1833 if ((netdev->features & NETIF_F_TSO) ||
1834 (netdev->features & NETIF_F_TSO6)) {
1835 priv->ops.fill_desc = fill_tso_desc;
1836 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
1837 /* This chip only support 7*4096 */
1838 netif_set_gso_max_size(netdev, 7 * 4096);
1840 priv->ops.fill_desc = fill_v2_desc;
1841 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1843 /* enable tso when init
1844 * control tso on/off through TSE bit in bd
1846 h->dev->ops->set_tso_stats(h, 1);
1850 static int hns_nic_try_get_ae(struct net_device *ndev)
1852 struct hns_nic_priv *priv = netdev_priv(ndev);
1853 struct hnae_handle *h;
1856 h = hnae_get_handle(&priv->netdev->dev,
1857 priv->fwnode, priv->port_id, NULL);
1858 if (IS_ERR_OR_NULL(h)) {
1860 dev_dbg(priv->dev, "has not handle, register notifier!\n");
1863 priv->ae_handle = h;
1865 ret = hns_nic_init_phy(ndev, h);
1867 dev_err(priv->dev, "probe phy device fail!\n");
1871 ret = hns_nic_init_ring_data(priv);
1874 goto out_init_ring_data;
1877 hns_nic_set_priv_ops(ndev);
1879 ret = register_netdev(ndev);
1881 dev_err(priv->dev, "probe register netdev fail!\n");
1882 goto out_reg_ndev_fail;
1887 hns_nic_uninit_ring_data(priv);
1888 priv->ring_data = NULL;
1891 hnae_put_handle(priv->ae_handle);
1892 priv->ae_handle = NULL;
1897 static int hns_nic_notifier_action(struct notifier_block *nb,
1898 unsigned long action, void *data)
1900 struct hns_nic_priv *priv =
1901 container_of(nb, struct hns_nic_priv, notifier_block);
1903 assert(action == HNAE_AE_REGISTER);
1905 if (!hns_nic_try_get_ae(priv->netdev)) {
1906 hnae_unregister_notifier(&priv->notifier_block);
1907 priv->notifier_block.notifier_call = NULL;
1912 static int hns_nic_dev_probe(struct platform_device *pdev)
1914 struct device *dev = &pdev->dev;
1915 struct net_device *ndev;
1916 struct hns_nic_priv *priv;
1920 ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF);
1924 platform_set_drvdata(pdev, ndev);
1926 priv = netdev_priv(ndev);
1928 priv->netdev = ndev;
1930 if (dev_of_node(dev)) {
1931 struct device_node *ae_node;
1933 if (of_device_is_compatible(dev->of_node,
1934 "hisilicon,hns-nic-v1"))
1935 priv->enet_ver = AE_VERSION_1;
1937 priv->enet_ver = AE_VERSION_2;
1939 ae_node = of_parse_phandle(dev->of_node, "ae-handle", 0);
1940 if (IS_ERR_OR_NULL(ae_node)) {
1941 ret = PTR_ERR(ae_node);
1942 dev_err(dev, "not find ae-handle\n");
1943 goto out_read_prop_fail;
1945 priv->fwnode = &ae_node->fwnode;
1946 } else if (is_acpi_node(dev->fwnode)) {
1947 struct acpi_reference_args args;
1949 if (acpi_dev_found(hns_enet_acpi_match[0].id))
1950 priv->enet_ver = AE_VERSION_1;
1951 else if (acpi_dev_found(hns_enet_acpi_match[1].id))
1952 priv->enet_ver = AE_VERSION_2;
1956 /* try to find port-idx-in-ae first */
1957 ret = acpi_node_get_property_reference(dev->fwnode,
1958 "ae-handle", 0, &args);
1960 dev_err(dev, "not find ae-handle\n");
1961 goto out_read_prop_fail;
1963 priv->fwnode = acpi_fwnode_handle(args.adev);
1965 dev_err(dev, "cannot read cfg data from OF or acpi\n");
1969 ret = device_property_read_u32(dev, "port-idx-in-ae", &port_id);
1971 /* only for old code compatible */
1972 ret = device_property_read_u32(dev, "port-id", &port_id);
1974 goto out_read_prop_fail;
1975 /* for old dts, we need to caculate the port offset */
1976 port_id = port_id < HNS_SRV_OFFSET ? port_id + HNS_DEBUG_OFFSET
1977 : port_id - HNS_SRV_OFFSET;
1979 priv->port_id = port_id;
1981 hns_init_mac_addr(ndev);
1983 ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT;
1984 ndev->priv_flags |= IFF_UNICAST_FLT;
1985 ndev->netdev_ops = &hns_nic_netdev_ops;
1986 hns_ethtool_set_ops(ndev);
1988 ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1989 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
1991 ndev->vlan_features |=
1992 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM;
1993 ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO;
1995 switch (priv->enet_ver) {
1997 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
1998 ndev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1999 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
2000 NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6;
2006 SET_NETDEV_DEV(ndev, dev);
2008 if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)))
2009 dev_dbg(dev, "set mask to 64bit\n");
2011 dev_err(dev, "set mask to 64bit fail!\n");
2013 /* carrier off reporting is important to ethtool even BEFORE open */
2014 netif_carrier_off(ndev);
2016 setup_timer(&priv->service_timer, hns_nic_service_timer,
2017 (unsigned long)priv);
2018 INIT_WORK(&priv->service_task, hns_nic_service_task);
2020 set_bit(NIC_STATE_SERVICE_INITED, &priv->state);
2021 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
2022 set_bit(NIC_STATE_DOWN, &priv->state);
2024 if (hns_nic_try_get_ae(priv->netdev)) {
2025 priv->notifier_block.notifier_call = hns_nic_notifier_action;
2026 ret = hnae_register_notifier(&priv->notifier_block);
2028 dev_err(dev, "register notifier fail!\n");
2029 goto out_notify_fail;
2031 dev_dbg(dev, "has not handle, register notifier!\n");
2037 (void)cancel_work_sync(&priv->service_task);
2043 static int hns_nic_dev_remove(struct platform_device *pdev)
2045 struct net_device *ndev = platform_get_drvdata(pdev);
2046 struct hns_nic_priv *priv = netdev_priv(ndev);
2048 if (ndev->reg_state != NETREG_UNINITIALIZED)
2049 unregister_netdev(ndev);
2051 if (priv->ring_data)
2052 hns_nic_uninit_ring_data(priv);
2053 priv->ring_data = NULL;
2056 phy_disconnect(ndev->phydev);
2058 if (!IS_ERR_OR_NULL(priv->ae_handle))
2059 hnae_put_handle(priv->ae_handle);
2060 priv->ae_handle = NULL;
2061 if (priv->notifier_block.notifier_call)
2062 hnae_unregister_notifier(&priv->notifier_block);
2063 priv->notifier_block.notifier_call = NULL;
2065 set_bit(NIC_STATE_REMOVING, &priv->state);
2066 (void)cancel_work_sync(&priv->service_task);
2072 static const struct of_device_id hns_enet_of_match[] = {
2073 {.compatible = "hisilicon,hns-nic-v1",},
2074 {.compatible = "hisilicon,hns-nic-v2",},
2078 MODULE_DEVICE_TABLE(of, hns_enet_of_match);
2080 static struct platform_driver hns_nic_dev_driver = {
2083 .of_match_table = hns_enet_of_match,
2084 .acpi_match_table = ACPI_PTR(hns_enet_acpi_match),
2086 .probe = hns_nic_dev_probe,
2087 .remove = hns_nic_dev_remove,
2090 module_platform_driver(hns_nic_dev_driver);
2092 MODULE_DESCRIPTION("HISILICON HNS Ethernet driver");
2093 MODULE_AUTHOR("Hisilicon, Inc.");
2094 MODULE_LICENSE("GPL");
2095 MODULE_ALIAS("platform:hns-nic");