]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blame - drivers/net/ethernet/hisilicon/hns/hns_enet.c
projects / mirror_ubuntu-zesty-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
net: hns: Bugfix for Tx timeout handling in hns driver
[mirror_ubuntu-zesty-kernel.git] / drivers / net / ethernet / hisilicon / hns / hns_enet.c
CommitLineData
b5996f11 1/*
2 * Copyright (c) 2014-2015 Hisilicon Limited.
3 *
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.
8 */
9
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>
15#include <linux/io.h>
16#include <linux/ip.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>
22
23#include "hnae.h"
24#include "hns_enet.h"
44770e11 25#include "hns_dsaf_mac.h"
b5996f11 26
27#define NIC_MAX_Q_PER_VF 16
28#define HNS_NIC_TX_TIMEOUT (5 * HZ)
29
30#define SERVICE_TIMER_HZ (1 * HZ)
31
32#define NIC_TX_CLEAN_MAX_NUM 256
33#define NIC_RX_CLEAN_MAX_NUM 64
34
b5996f11 35#define RCB_IRQ_NOT_INITED 0
36#define RCB_IRQ_INITED 1
9cbe9fd5 37#define HNS_BUFFER_SIZE_2048 2048
b5996f11 38
13ac695e
S		 39#define BD_MAX_SEND_SIZE 8191
40#define SKB_TMP_LEN(SKB) \
41 (((SKB)->transport_header - (SKB)->mac_header) + tcp_hdrlen(SKB))
42
43static void fill_v2_desc(struct hnae_ring *ring, void *priv,
44 int size, dma_addr_t dma, int frag_end,
45 int buf_num, enum hns_desc_type type, int mtu)
46{
47 struct hnae_desc *desc = &ring->desc[ring->next_to_use];
48 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
49 struct iphdr *iphdr;
50 struct ipv6hdr *ipv6hdr;
51 struct sk_buff *skb;
13ac695e
S		 52 __be16 protocol;
53 u8 bn_pid = 0;
54 u8 rrcfv = 0;
55 u8 ip_offset = 0;
56 u8 tvsvsn = 0;
57 u16 mss = 0;
58 u8 l4_len = 0;
59 u16 paylen = 0;
60
61 desc_cb->priv = priv;
62 desc_cb->length = size;
63 desc_cb->dma = dma;
64 desc_cb->type = type;
65
66 desc->addr = cpu_to_le64(dma);
67 desc->tx.send_size = cpu_to_le16((u16)size);
68
f8a1a636 69 /* config bd buffer end */
13ac695e
S		 70 hnae_set_bit(rrcfv, HNSV2_TXD_VLD_B, 1);
71 hnae_set_field(bn_pid, HNSV2_TXD_BUFNUM_M, 0, buf_num - 1);
72
f8a1a636
SL		 73 /* fill port_id in the tx bd for sending management pkts */
74 hnae_set_field(bn_pid, HNSV2_TXD_PORTID_M,
75 HNSV2_TXD_PORTID_S, ring->q->handle->dport_id);
76
13ac695e
S		 77 if (type == DESC_TYPE_SKB) {
78 skb = (struct sk_buff *)priv;
79
80 if (skb->ip_summed == CHECKSUM_PARTIAL) {
81 skb_reset_mac_len(skb);
82 protocol = skb->protocol;
83 ip_offset = ETH_HLEN;
84
85 if (protocol == htons(ETH_P_8021Q)) {
86 ip_offset += VLAN_HLEN;
87 protocol = vlan_get_protocol(skb);
88 skb->protocol = protocol;
89 }
90
91 if (skb->protocol == htons(ETH_P_IP)) {
92 iphdr = ip_hdr(skb);
93 hnae_set_bit(rrcfv, HNSV2_TXD_L3CS_B, 1);
94 hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1);
95
96 /* check for tcp/udp header */
0b51b1dc
DH		 97 if (iphdr->protocol == IPPROTO_TCP &&
98 skb_is_gso(skb)) {
13ac695e
S		 99 hnae_set_bit(tvsvsn,
100 HNSV2_TXD_TSE_B, 1);
13ac695e 101 l4_len = tcp_hdrlen(skb);
0b51b1dc
DH		 102 mss = skb_shinfo(skb)->gso_size;
103 paylen = skb->len - SKB_TMP_LEN(skb);
13ac695e
S		 104 }
105 } else if (skb->protocol == htons(ETH_P_IPV6)) {
106 hnae_set_bit(tvsvsn, HNSV2_TXD_IPV6_B, 1);
107 ipv6hdr = ipv6_hdr(skb);
108 hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1);
109
110 /* check for tcp/udp header */
0b51b1dc
DH		 111 if (ipv6hdr->nexthdr == IPPROTO_TCP &&
112 skb_is_gso(skb) && skb_is_gso_v6(skb)) {
13ac695e
S		 113 hnae_set_bit(tvsvsn,
114 HNSV2_TXD_TSE_B, 1);
13ac695e 115 l4_len = tcp_hdrlen(skb);
0b51b1dc
DH		 116 mss = skb_shinfo(skb)->gso_size;
117 paylen = skb->len - SKB_TMP_LEN(skb);
13ac695e
S		 118 }
119 }
120 desc->tx.ip_offset = ip_offset;
121 desc->tx.tse_vlan_snap_v6_sctp_nth = tvsvsn;
122 desc->tx.mss = cpu_to_le16(mss);
123 desc->tx.l4_len = l4_len;
124 desc->tx.paylen = cpu_to_le16(paylen);
125 }
126 }
127
128 hnae_set_bit(rrcfv, HNSV2_TXD_FE_B, frag_end);
129
130 desc->tx.bn_pid = bn_pid;
131 desc->tx.ra_ri_cs_fe_vld = rrcfv;
132
133 ring_ptr_move_fw(ring, next_to_use);
134}
135
63434888
KY		 136static const struct acpi_device_id hns_enet_acpi_match[] = {
137 { "HISI00C1", 0 },
138 { "HISI00C2", 0 },
139 { },
140};
141MODULE_DEVICE_TABLE(acpi, hns_enet_acpi_match);
142
b5996f11 143static void fill_desc(struct hnae_ring *ring, void *priv,
144 int size, dma_addr_t dma, int frag_end,
13ac695e 145 int buf_num, enum hns_desc_type type, int mtu)
b5996f11 146{
147 struct hnae_desc *desc = &ring->desc[ring->next_to_use];
148 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
149 struct sk_buff *skb;
150 __be16 protocol;
151 u32 ip_offset;
152 u32 asid_bufnum_pid = 0;
153 u32 flag_ipoffset = 0;
154
155 desc_cb->priv = priv;
156 desc_cb->length = size;
157 desc_cb->dma = dma;
158 desc_cb->type = type;
159
160 desc->addr = cpu_to_le64(dma);
161 desc->tx.send_size = cpu_to_le16((u16)size);
162
163 /*config bd buffer end */
164 flag_ipoffset |= 1 << HNS_TXD_VLD_B;
165
166 asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S;
167
168 if (type == DESC_TYPE_SKB) {
169 skb = (struct sk_buff *)priv;
170
171 if (skb->ip_summed == CHECKSUM_PARTIAL) {
172 protocol = skb->protocol;
173 ip_offset = ETH_HLEN;
174
175 /*if it is a SW VLAN check the next protocol*/
176 if (protocol == htons(ETH_P_8021Q)) {
177 ip_offset += VLAN_HLEN;
178 protocol = vlan_get_protocol(skb);
179 skb->protocol = protocol;
180 }
181
182 if (skb->protocol == htons(ETH_P_IP)) {
183 flag_ipoffset |= 1 << HNS_TXD_L3CS_B;
184 /* check for tcp/udp header */
185 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
186
187 } else if (skb->protocol == htons(ETH_P_IPV6)) {
188 /* ipv6 has not l3 cs, check for L4 header */
189 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
190 }
191
192 flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S;
193 }
194 }
195
196 flag_ipoffset |= frag_end << HNS_TXD_FE_B;
197
198 desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid);
199 desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset);
200
201 ring_ptr_move_fw(ring, next_to_use);
202}
203
204static void unfill_desc(struct hnae_ring *ring)
205{
206 ring_ptr_move_bw(ring, next_to_use);
207}
208
13ac695e
S		 209static int hns_nic_maybe_stop_tx(
210 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
b5996f11 211{
13ac695e
S		 212 struct sk_buff *skb = *out_skb;
213 struct sk_buff *new_skb = NULL;
b5996f11 214 int buf_num;
b5996f11 215
216 /* no. of segments (plus a header) */
217 buf_num = skb_shinfo(skb)->nr_frags + 1;
218
219 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
13ac695e
S		 220 if (ring_space(ring) < 1)
221 return -EBUSY;
b5996f11 222
223 new_skb = skb_copy(skb, GFP_ATOMIC);
13ac695e
S		 224 if (!new_skb)
225 return -ENOMEM;
b5996f11 226
227 dev_kfree_skb_any(skb);
13ac695e 228 *out_skb = new_skb;
b5996f11 229 buf_num = 1;
b5996f11 230 } else if (buf_num > ring_space(ring)) {
13ac695e
S		 231 return -EBUSY;
232 }
233
234 *bnum = buf_num;
235 return 0;
236}
237
64353af6
S		 238static int hns_nic_maybe_stop_tso(
239 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
240{
241 int i;
242 int size;
243 int buf_num;
244 int frag_num;
245 struct sk_buff *skb = *out_skb;
246 struct sk_buff *new_skb = NULL;
247 struct skb_frag_struct *frag;
248
249 size = skb_headlen(skb);
250 buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
251
252 frag_num = skb_shinfo(skb)->nr_frags;
253 for (i = 0; i < frag_num; i++) {
254 frag = &skb_shinfo(skb)->frags[i];
255 size = skb_frag_size(frag);
256 buf_num += (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
257 }
258
259 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
260 buf_num = (skb->len + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
261 if (ring_space(ring) < buf_num)
262 return -EBUSY;
263 /* manual split the send packet */
264 new_skb = skb_copy(skb, GFP_ATOMIC);
265 if (!new_skb)
266 return -ENOMEM;
267 dev_kfree_skb_any(skb);
268 *out_skb = new_skb;
269
270 } else if (ring_space(ring) < buf_num) {
271 return -EBUSY;
272 }
273
274 *bnum = buf_num;
275 return 0;
276}
277
278static void fill_tso_desc(struct hnae_ring *ring, void *priv,
279 int size, dma_addr_t dma, int frag_end,
280 int buf_num, enum hns_desc_type type, int mtu)
281{
282 int frag_buf_num;
283 int sizeoflast;
284 int k;
285
286 frag_buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
287 sizeoflast = size % BD_MAX_SEND_SIZE;
288 sizeoflast = sizeoflast ? sizeoflast : BD_MAX_SEND_SIZE;
289
290 /* when the frag size is bigger than hardware, split this frag */
291 for (k = 0; k < frag_buf_num; k++)
292 fill_v2_desc(ring, priv,
293 (k == frag_buf_num - 1) ?
294 sizeoflast : BD_MAX_SEND_SIZE,
295 dma + BD_MAX_SEND_SIZE * k,
296 frag_end && (k == frag_buf_num - 1) ? 1 : 0,
297 buf_num,
298 (type == DESC_TYPE_SKB && !k) ?
299 DESC_TYPE_SKB : DESC_TYPE_PAGE,
300 mtu);
301}
302
13ac695e
S		 303int hns_nic_net_xmit_hw(struct net_device *ndev,
304 struct sk_buff *skb,
305 struct hns_nic_ring_data *ring_data)
306{
307 struct hns_nic_priv *priv = netdev_priv(ndev);
13ac695e 308 struct hnae_ring *ring = ring_data->ring;
b85ea006 309 struct device *dev = ring_to_dev(ring);
13ac695e
S		 310 struct netdev_queue *dev_queue;
311 struct skb_frag_struct *frag;
312 int buf_num;
313 int seg_num;
314 dma_addr_t dma;
315 int size, next_to_use;
316 int i;
317
318 switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) {
319 case -EBUSY:
b5996f11 320 ring->stats.tx_busy++;
321 goto out_net_tx_busy;
13ac695e
S		 322 case -ENOMEM:
323 ring->stats.sw_err_cnt++;
324 netdev_err(ndev, "no memory to xmit!\n");
325 goto out_err_tx_ok;
326 default:
327 break;
b5996f11 328 }
13ac695e
S		 329
330 /* no. of segments (plus a header) */
331 seg_num = skb_shinfo(skb)->nr_frags + 1;
b5996f11 332 next_to_use = ring->next_to_use;
333
334 /* fill the first part */
335 size = skb_headlen(skb);
336 dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE);
337 if (dma_mapping_error(dev, dma)) {
338 netdev_err(ndev, "TX head DMA map failed\n");
339 ring->stats.sw_err_cnt++;
340 goto out_err_tx_ok;
341 }
13ac695e
S		 342 priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0,
343 buf_num, DESC_TYPE_SKB, ndev->mtu);
b5996f11 344
345 /* fill the fragments */
13ac695e 346 for (i = 1; i < seg_num; i++) {
b5996f11 347 frag = &skb_shinfo(skb)->frags[i - 1];
348 size = skb_frag_size(frag);
349 dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
350 if (dma_mapping_error(dev, dma)) {
351 netdev_err(ndev, "TX frag(%d) DMA map failed\n", i);
352 ring->stats.sw_err_cnt++;
353 goto out_map_frag_fail;
354 }
13ac695e
S		 355 priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma,
356 seg_num - 1 == i ? 1 : 0, buf_num,
357 DESC_TYPE_PAGE, ndev->mtu);
b5996f11 358 }
359
360 /*complete translate all packets*/
361 dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping);
362 netdev_tx_sent_queue(dev_queue, skb->len);
363
364 wmb(); /* commit all data before submit */
365 assert(skb->queue_mapping < priv->ae_handle->q_num);
366 hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num);
367 ring->stats.tx_pkts++;
368 ring->stats.tx_bytes += skb->len;
369
370 return NETDEV_TX_OK;
371
372out_map_frag_fail:
373
13ac695e 374 while (ring->next_to_use != next_to_use) {
b5996f11 375 unfill_desc(ring);
13ac695e
S		 376 if (ring->next_to_use != next_to_use)
377 dma_unmap_page(dev,
378 ring->desc_cb[ring->next_to_use].dma,
379 ring->desc_cb[ring->next_to_use].length,
380 DMA_TO_DEVICE);
381 else
382 dma_unmap_single(dev,
383 ring->desc_cb[next_to_use].dma,
384 ring->desc_cb[next_to_use].length,
385 DMA_TO_DEVICE);
b5996f11 386 }
387
b5996f11 388out_err_tx_ok:
389
390 dev_kfree_skb_any(skb);
391 return NETDEV_TX_OK;
392
393out_net_tx_busy:
394
395 netif_stop_subqueue(ndev, skb->queue_mapping);
396
397 /* Herbert's original patch had:
398 * smp_mb__after_netif_stop_queue();
399 * but since that doesn't exist yet, just open code it.
400 */
401 smp_mb();
402 return NETDEV_TX_BUSY;
403}
404
405/**
406 * hns_nic_get_headlen - determine size of header for RSC/LRO/GRO/FCOE
407 * @data: pointer to the start of the headers
408 * @max: total length of section to find headers in
409 *
410 * This function is meant to determine the length of headers that will
411 * be recognized by hardware for LRO, GRO, and RSC offloads. The main
412 * motivation of doing this is to only perform one pull for IPv4 TCP
413 * packets so that we can do basic things like calculating the gso_size
414 * based on the average data per packet.
415 **/
416static unsigned int hns_nic_get_headlen(unsigned char *data, u32 flag,
417 unsigned int max_size)
418{
419 unsigned char *network;
420 u8 hlen;
421
422 /* this should never happen, but better safe than sorry */
423 if (max_size < ETH_HLEN)
424 return max_size;
425
426 /* initialize network frame pointer */
427 network = data;
428
429 /* set first protocol and move network header forward */
430 network += ETH_HLEN;
431
432 /* handle any vlan tag if present */
433 if (hnae_get_field(flag, HNS_RXD_VLAN_M, HNS_RXD_VLAN_S)
434 == HNS_RX_FLAG_VLAN_PRESENT) {
435 if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN))
436 return max_size;
437
438 network += VLAN_HLEN;
439 }
440
441 /* handle L3 protocols */
442 if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S)
443 == HNS_RX_FLAG_L3ID_IPV4) {
444 if ((typeof(max_size))(network - data) >
445 (max_size - sizeof(struct iphdr)))
446 return max_size;
447
448 /* access ihl as a u8 to avoid unaligned access on ia64 */
449 hlen = (network[0] & 0x0F) << 2;
450
451 /* verify hlen meets minimum size requirements */
452 if (hlen < sizeof(struct iphdr))
453 return network - data;
454
455 /* record next protocol if header is present */
456 } else if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S)
457 == HNS_RX_FLAG_L3ID_IPV6) {
458 if ((typeof(max_size))(network - data) >
459 (max_size - sizeof(struct ipv6hdr)))
460 return max_size;
461
462 /* record next protocol */
463 hlen = sizeof(struct ipv6hdr);
464 } else {
465 return network - data;
466 }
467
468 /* relocate pointer to start of L4 header */
469 network += hlen;
470
471 /* finally sort out TCP/UDP */
472 if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S)
473 == HNS_RX_FLAG_L4ID_TCP) {
474 if ((typeof(max_size))(network - data) >
475 (max_size - sizeof(struct tcphdr)))
476 return max_size;
477
478 /* access doff as a u8 to avoid unaligned access on ia64 */
479 hlen = (network[12] & 0xF0) >> 2;
480
481 /* verify hlen meets minimum size requirements */
482 if (hlen < sizeof(struct tcphdr))
483 return network - data;
484
485 network += hlen;
486 } else if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S)
487 == HNS_RX_FLAG_L4ID_UDP) {
488 if ((typeof(max_size))(network - data) >
489 (max_size - sizeof(struct udphdr)))
490 return max_size;
491
492 network += sizeof(struct udphdr);
493 }
494
495 /* If everything has gone correctly network should be the
496 * data section of the packet and will be the end of the header.
497 * If not then it probably represents the end of the last recognized
498 * header.
499 */
500 if ((typeof(max_size))(network - data) < max_size)
501 return network - data;
502 else
503 return max_size;
504}
505
9cbe9fd5 506static void hns_nic_reuse_page(struct sk_buff *skb, int i,
507 struct hnae_ring *ring, int pull_len,
508 struct hnae_desc_cb *desc_cb)
b5996f11 509{
9cbe9fd5 510 struct hnae_desc *desc;
511 int truesize, size;
512 int last_offset;
be78a690
AB		 513 bool twobufs;
514
a82e6438
S		 515 twobufs = ((PAGE_SIZE < 8192) &&
516 hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048);
9cbe9fd5 517
518 desc = &ring->desc[ring->next_to_clean];
519 size = le16_to_cpu(desc->rx.size);
520
be78a690 521 if (twobufs) {
9cbe9fd5 522 truesize = hnae_buf_size(ring);
523 } else {
524 truesize = ALIGN(size, L1_CACHE_BYTES);
525 last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
526 }
527
9cbe9fd5 528 skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len,
529 size - pull_len, truesize - pull_len);
530
b5996f11 531 /* avoid re-using remote pages,flag default unreuse */
be78a690
AB		 532 if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id()))
533 return;
534
535 if (twobufs) {
536 /* if we are only owner of page we can reuse it */
537 if (likely(page_count(desc_cb->priv) == 1)) {
538 /* flip page offset to other buffer */
539 desc_cb->page_offset ^= truesize;
b5996f11 540
b5996f11 541 desc_cb->reuse_flag = 1;
542 /* bump ref count on page before it is given*/
543 get_page(desc_cb->priv);
544 }
be78a690
AB		 545 return;
546 }
547
548 /* move offset up to the next cache line */
549 desc_cb->page_offset += truesize;
550
551 if (desc_cb->page_offset <= last_offset) {
552 desc_cb->reuse_flag = 1;
553 /* bump ref count on page before it is given*/
554 get_page(desc_cb->priv);
b5996f11 555 }
556}
557
13ac695e
S		 558static void get_v2rx_desc_bnum(u32 bnum_flag, int *out_bnum)
559{
560 *out_bnum = hnae_get_field(bnum_flag,
561 HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S) + 1;
562}
563
564static void get_rx_desc_bnum(u32 bnum_flag, int *out_bnum)
565{
566 *out_bnum = hnae_get_field(bnum_flag,
567 HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S);
568}
569
862b3d20
S		 570static void hns_nic_rx_checksum(struct hns_nic_ring_data *ring_data,
571 struct sk_buff *skb, u32 flag)
572{
573 struct net_device *netdev = ring_data->napi.dev;
574 u32 l3id;
575 u32 l4id;
576
577 /* check if RX checksum offload is enabled */
578 if (unlikely(!(netdev->features & NETIF_F_RXCSUM)))
579 return;
580
581 /* In hardware, we only support checksum for the following protocols:
582 * 1) IPv4,
583 * 2) TCP(over IPv4 or IPv6),
584 * 3) UDP(over IPv4 or IPv6),
585 * 4) SCTP(over IPv4 or IPv6)
586 * but we support many L3(IPv4, IPv6, MPLS, PPPoE etc) and L4(TCP,
587 * UDP, GRE, SCTP, IGMP, ICMP etc.) protocols.
588 *
589 * Hardware limitation:
590 * Our present hardware RX Descriptor lacks L3/L4 checksum "Status &
591 * Error" bit (which usually can be used to indicate whether checksum
592 * was calculated by the hardware and if there was any error encountered
593 * during checksum calculation).
594 *
595 * Software workaround:
596 * We do get info within the RX descriptor about the kind of L3/L4
597 * protocol coming in the packet and the error status. These errors
598 * might not just be checksum errors but could be related to version,
599 * length of IPv4, UDP, TCP etc.
600 * Because there is no-way of knowing if it is a L3/L4 error due to bad
601 * checksum or any other L3/L4 error, we will not (cannot) convey
602 * checksum status for such cases to upper stack and will not maintain
603 * the RX L3/L4 checksum counters as well.
604 */
605
606 l3id = hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S);
607 l4id = hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S);
608
609 /* check L3 protocol for which checksum is supported */
610 if ((l3id != HNS_RX_FLAG_L3ID_IPV4) && (l3id != HNS_RX_FLAG_L3ID_IPV6))
611 return;
612
613 /* check for any(not just checksum)flagged L3 protocol errors */
614 if (unlikely(hnae_get_bit(flag, HNS_RXD_L3E_B)))
615 return;
616
617 /* we do not support checksum of fragmented packets */
618 if (unlikely(hnae_get_bit(flag, HNS_RXD_FRAG_B)))
619 return;
620
621 /* check L4 protocol for which checksum is supported */
622 if ((l4id != HNS_RX_FLAG_L4ID_TCP) &&
623 (l4id != HNS_RX_FLAG_L4ID_UDP) &&
624 (l4id != HNS_RX_FLAG_L4ID_SCTP))
625 return;
626
627 /* check for any(not just checksum)flagged L4 protocol errors */
628 if (unlikely(hnae_get_bit(flag, HNS_RXD_L4E_B)))
629 return;
630
631 /* now, this has to be a packet with valid RX checksum */
632 skb->ip_summed = CHECKSUM_UNNECESSARY;
633}
634
b5996f11 635static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data,
636 struct sk_buff **out_skb, int *out_bnum)
637{
638 struct hnae_ring *ring = ring_data->ring;
639 struct net_device *ndev = ring_data->napi.dev;
13ac695e 640 struct hns_nic_priv *priv = netdev_priv(ndev);
b5996f11 641 struct sk_buff *skb;
642 struct hnae_desc *desc;
643 struct hnae_desc_cb *desc_cb;
644 unsigned char *va;
9cbe9fd5 645 int bnum, length, i;
b5996f11 646 int pull_len;
647 u32 bnum_flag;
648
b5996f11 649 desc = &ring->desc[ring->next_to_clean];
650 desc_cb = &ring->desc_cb[ring->next_to_clean];
13ac695e
S		 651
652 prefetch(desc);
653
b5996f11 654 va = (unsigned char *)desc_cb->buf + desc_cb->page_offset;
655
13ac695e
S		 656 /* prefetch first cache line of first page */
657 prefetch(va);
658#if L1_CACHE_BYTES < 128
659 prefetch(va + L1_CACHE_BYTES);
660#endif
661
662 skb = *out_skb = napi_alloc_skb(&ring_data->napi,
663 HNS_RX_HEAD_SIZE);
b5996f11 664 if (unlikely(!skb)) {
665 netdev_err(ndev, "alloc rx skb fail\n");
666 ring->stats.sw_err_cnt++;
667 return -ENOMEM;
668 }
669
9cbe9fd5 670 prefetchw(skb->data);
13ac695e
S		 671 length = le16_to_cpu(desc->rx.pkt_len);
672 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
673 priv->ops.get_rxd_bnum(bnum_flag, &bnum);
674 *out_bnum = bnum;
675
b5996f11 676 if (length <= HNS_RX_HEAD_SIZE) {
677 memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
678
679 /* we can reuse buffer as-is, just make sure it is local */
680 if (likely(page_to_nid(desc_cb->priv) == numa_node_id()))
681 desc_cb->reuse_flag = 1;
682 else /* this page cannot be reused so discard it */
683 put_page(desc_cb->priv);
684
685 ring_ptr_move_fw(ring, next_to_clean);
686
687 if (unlikely(bnum != 1)) { /* check err*/
688 *out_bnum = 1;
689 goto out_bnum_err;
690 }
691 } else {
692 ring->stats.seg_pkt_cnt++;
693
694 pull_len = hns_nic_get_headlen(va, bnum_flag, HNS_RX_HEAD_SIZE);
695 memcpy(__skb_put(skb, pull_len), va,
696 ALIGN(pull_len, sizeof(long)));
697
9cbe9fd5 698 hns_nic_reuse_page(skb, 0, ring, pull_len, desc_cb);
b5996f11 699 ring_ptr_move_fw(ring, next_to_clean);
700
701 if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/
702 *out_bnum = 1;
703 goto out_bnum_err;
704 }
705 for (i = 1; i < bnum; i++) {
706 desc = &ring->desc[ring->next_to_clean];
707 desc_cb = &ring->desc_cb[ring->next_to_clean];
b5996f11 708
9cbe9fd5 709 hns_nic_reuse_page(skb, i, ring, 0, desc_cb);
b5996f11 710 ring_ptr_move_fw(ring, next_to_clean);
711 }
712 }
713
714 /* check except process, free skb and jump the desc */
715 if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) {
716out_bnum_err:
717 *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/
718 netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n",
719 bnum, ring->max_desc_num_per_pkt,
720 length, (int)MAX_SKB_FRAGS,
721 ((u64 *)desc)[0], ((u64 *)desc)[1]);
722 ring->stats.err_bd_num++;
723 dev_kfree_skb_any(skb);
724 return -EDOM;
725 }
726
727 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
728
729 if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) {
730 netdev_err(ndev, "no valid bd,%016llx,%016llx\n",
731 ((u64 *)desc)[0], ((u64 *)desc)[1]);
732 ring->stats.non_vld_descs++;
733 dev_kfree_skb_any(skb);
734 return -EINVAL;
735 }
736
737 if (unlikely((!desc->rx.pkt_len) ||
738 hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) {
b5996f11 739 ring->stats.err_pkt_len++;
740 dev_kfree_skb_any(skb);
741 return -EFAULT;
742 }
743
744 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) {
b5996f11 745 ring->stats.l2_err++;
746 dev_kfree_skb_any(skb);
747 return -EFAULT;
748 }
749
750 ring->stats.rx_pkts++;
751 ring->stats.rx_bytes += skb->len;
752
862b3d20
S		 753 /* indicate to upper stack if our hardware has already calculated
754 * the RX checksum
755 */
756 hns_nic_rx_checksum(ring_data, skb, bnum_flag);
b5996f11 757
758 return 0;
759}
760
761static void
762hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count)
763{
764 int i, ret;
765 struct hnae_desc_cb res_cbs;
766 struct hnae_desc_cb *desc_cb;
767 struct hnae_ring *ring = ring_data->ring;
768 struct net_device *ndev = ring_data->napi.dev;
769
770 for (i = 0; i < cleand_count; i++) {
771 desc_cb = &ring->desc_cb[ring->next_to_use];
772 if (desc_cb->reuse_flag) {
773 ring->stats.reuse_pg_cnt++;
774 hnae_reuse_buffer(ring, ring->next_to_use);
775 } else {
776 ret = hnae_reserve_buffer_map(ring, &res_cbs);
777 if (ret) {
778 ring->stats.sw_err_cnt++;
779 netdev_err(ndev, "hnae reserve buffer map failed.\n");
780 break;
781 }
782 hnae_replace_buffer(ring, ring->next_to_use, &res_cbs);
783 }
784
785 ring_ptr_move_fw(ring, next_to_use);
786 }
787
788 wmb(); /* make all data has been write before submit */
789 writel_relaxed(i, ring->io_base + RCB_REG_HEAD);
790}
791
792/* return error number for error or number of desc left to take
793 */
794static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data,
795 struct sk_buff *skb)
796{
797 struct net_device *ndev = ring_data->napi.dev;
798
799 skb->protocol = eth_type_trans(skb, ndev);
800 (void)napi_gro_receive(&ring_data->napi, skb);
801 ndev->last_rx = jiffies;
802}
803
0e97cd4e 804static int hns_desc_unused(struct hnae_ring *ring)
805{
806 int ntc = ring->next_to_clean;
807 int ntu = ring->next_to_use;
808
809 return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu;
810}
811
b5996f11 812static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data,
813 int budget, void *v)
814{
815 struct hnae_ring *ring = ring_data->ring;
816 struct sk_buff *skb;
34447271 817 int num, bnum;
b5996f11 818#define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
819 int recv_pkts, recv_bds, clean_count, err;
0e97cd4e 820 int unused_count = hns_desc_unused(ring);
b5996f11 821
822 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
823 rmb(); /* make sure num taken effect before the other data is touched */
824
825 recv_pkts = 0, recv_bds = 0, clean_count = 0;
0e97cd4e 826 num -= unused_count;
34447271 827
b5996f11 828 while (recv_pkts < budget && recv_bds < num) {
6ba312eb 829 /* reuse or realloc buffers */
0e97cd4e 830 if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
831 hns_nic_alloc_rx_buffers(ring_data,
832 clean_count + unused_count);
b5996f11 833 clean_count = 0;
0e97cd4e 834 unused_count = hns_desc_unused(ring);
b5996f11 835 }
836
6ba312eb 837 /* poll one pkt */
b5996f11 838 err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum);
839 if (unlikely(!skb)) /* this fault cannot be repaired */
3a31b64e 840 goto out;
b5996f11 841
842 recv_bds += bnum;
843 clean_count += bnum;
844 if (unlikely(err)) { /* do jump the err */
845 recv_pkts++;
846 continue;
847 }
848
849 /* do update ip stack process*/
850 ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)(
851 ring_data, skb);
852 recv_pkts++;
853 }
854
3a31b64e 855out:
13ac695e 856 /* make all data has been write before submit */
0e97cd4e 857 if (clean_count + unused_count > 0)
858 hns_nic_alloc_rx_buffers(ring_data,
859 clean_count + unused_count);
13ac695e 860
b5996f11 861 return recv_pkts;
862}
863
bccd2711 864static bool hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
b5996f11 865{
866 struct hnae_ring *ring = ring_data->ring;
867 int num = 0;
868
cee5add4
DH		 869 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
870
b5996f11 871 /* for hardware bug fixed */
872 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
873
874 if (num > 0) {
875 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
876 ring_data->ring, 1);
877
bccd2711 878 return false;
879 } else {
880 return true;
b5996f11 881 }
882}
883
bccd2711 884static bool hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
cee5add4
DH		 885{
886 struct hnae_ring *ring = ring_data->ring;
bccd2711 887 int num;
cee5add4
DH		 888
889 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
890
bccd2711 891 if (!num)
892 return true;
cee5add4 893 else
bccd2711 894 return false;
cee5add4
DH		 895}
896
b5996f11 897static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring,
898 int *bytes, int *pkts)
899{
900 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
901
902 (*pkts) += (desc_cb->type == DESC_TYPE_SKB);
903 (*bytes) += desc_cb->length;
904 /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
905 hnae_free_buffer_detach(ring, ring->next_to_clean);
906
907 ring_ptr_move_fw(ring, next_to_clean);
908}
909
910static int is_valid_clean_head(struct hnae_ring *ring, int h)
911{
912 int u = ring->next_to_use;
913 int c = ring->next_to_clean;
914
915 if (unlikely(h > ring->desc_num))
916 return 0;
917
918 assert(u > 0 && u < ring->desc_num);
919 assert(c > 0 && c < ring->desc_num);
920 assert(u != c && h != c); /* must be checked before call this func */
921
922 return u > c ? (h > c && h <= u) : (h > c || h <= u);
923}
924
925/* netif_tx_lock will turn down the performance, set only when necessary */
926#ifdef CONFIG_NET_POLL_CONTROLLER
a82e6438
S		 927#define NETIF_TX_LOCK(ring) spin_lock(&(ring)->lock)
928#define NETIF_TX_UNLOCK(ring) spin_unlock(&(ring)->lock)
b5996f11 929#else
74800fc9 930#define NETIF_TX_LOCK(ring)
931#define NETIF_TX_UNLOCK(ring)
b5996f11 932#endif
74800fc9 933
b5996f11 934/* reclaim all desc in one budget
935 * return error or number of desc left
936 */
937static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
938 int budget, void *v)
939{
940 struct hnae_ring *ring = ring_data->ring;
941 struct net_device *ndev = ring_data->napi.dev;
942 struct netdev_queue *dev_queue;
943 struct hns_nic_priv *priv = netdev_priv(ndev);
944 int head;
945 int bytes, pkts;
946
74800fc9 947 NETIF_TX_LOCK(ring);
b5996f11 948
949 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
950 rmb(); /* make sure head is ready before touch any data */
951
952 if (is_ring_empty(ring) || head == ring->next_to_clean) {
74800fc9 953 NETIF_TX_UNLOCK(ring);
b5996f11 954 return 0; /* no data to poll */
955 }
956
957 if (!is_valid_clean_head(ring, head)) {
958 netdev_err(ndev, "wrong head (%d, %d-%d)\n", head,
959 ring->next_to_use, ring->next_to_clean);
960 ring->stats.io_err_cnt++;
74800fc9 961 NETIF_TX_UNLOCK(ring);
b5996f11 962 return -EIO;
963 }
964
965 bytes = 0;
966 pkts = 0;
9cbe9fd5 967 while (head != ring->next_to_clean) {
b5996f11 968 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
9cbe9fd5 969 /* issue prefetch for next Tx descriptor */
970 prefetch(&ring->desc_cb[ring->next_to_clean]);
971 }
b5996f11 972
74800fc9 973 NETIF_TX_UNLOCK(ring);
b5996f11 974
975 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
976 netdev_tx_completed_queue(dev_queue, pkts, bytes);
977
13ac695e
S		 978 if (unlikely(priv->link && !netif_carrier_ok(ndev)))
979 netif_carrier_on(ndev);
980
b5996f11 981 if (unlikely(pkts && netif_carrier_ok(ndev) &&
982 (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) {
983 /* Make sure that anybody stopping the queue after this
984 * sees the new next_to_clean.
985 */
986 smp_mb();
987 if (netif_tx_queue_stopped(dev_queue) &&
988 !test_bit(NIC_STATE_DOWN, &priv->state)) {
989 netif_tx_wake_queue(dev_queue);
990 ring->stats.restart_queue++;
991 }
992 }
993 return 0;
994}
995
bccd2711 996static bool hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
b5996f11 997{
998 struct hnae_ring *ring = ring_data->ring;
cee5add4
DH		 999 int head;
1000
1001 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
1002
1003 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
b5996f11 1004
1005 if (head != ring->next_to_clean) {
1006 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
1007 ring_data->ring, 1);
1008
bccd2711 1009 return false;
1010 } else {
1011 return true;
b5996f11 1012 }
1013}
1014
bccd2711 1015static bool hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
cee5add4
DH		 1016{
1017 struct hnae_ring *ring = ring_data->ring;
1018 int head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
1019
1020 if (head == ring->next_to_clean)
bccd2711 1021 return true;
cee5add4 1022 else
bccd2711 1023 return false;
cee5add4
DH		 1024}
1025
b5996f11 1026static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
1027{
1028 struct hnae_ring *ring = ring_data->ring;
1029 struct net_device *ndev = ring_data->napi.dev;
1030 struct netdev_queue *dev_queue;
1031 int head;
1032 int bytes, pkts;
1033
74800fc9 1034 NETIF_TX_LOCK(ring);
b5996f11 1035
1036 head = ring->next_to_use; /* ntu :soft setted ring position*/
1037 bytes = 0;
1038 pkts = 0;
1039 while (head != ring->next_to_clean)
1040 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
1041
74800fc9 1042 NETIF_TX_UNLOCK(ring);
b5996f11 1043
1044 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
1045 netdev_tx_reset_queue(dev_queue);
1046}
1047
1048static int hns_nic_common_poll(struct napi_struct *napi, int budget)
1049{
bccd2711 1050 int clean_complete = 0;
b5996f11 1051 struct hns_nic_ring_data *ring_data =
1052 container_of(napi, struct hns_nic_ring_data, napi);
bccd2711 1053 struct hnae_ring *ring = ring_data->ring;
b5996f11 1054
bccd2711 1055try_again:
1056 clean_complete += ring_data->poll_one(
1057 ring_data, budget - clean_complete,
1058 ring_data->ex_process);
1059
1060 if (clean_complete < budget) {
1061 if (ring_data->fini_process(ring_data)) {
1062 napi_complete(napi);
1063 ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
1064 } else {
1065 goto try_again;
1066 }
b5996f11 1067 }
1068
1069 return clean_complete;
1070}
1071
1072static irqreturn_t hns_irq_handle(int irq, void *dev)
1073{
1074 struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev;
1075
1076 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
1077 ring_data->ring, 1);
1078 napi_schedule(&ring_data->napi);
1079
1080 return IRQ_HANDLED;
1081}
1082
1083/**
1084 *hns_nic_adjust_link - adjust net work mode by the phy stat or new param
1085 *@ndev: net device
1086 */
1087static void hns_nic_adjust_link(struct net_device *ndev)
1088{
1089 struct hns_nic_priv *priv = netdev_priv(ndev);
1090 struct hnae_handle *h = priv->ae_handle;
bb7189dc
QX		 1091 int state = 1;
1092
262b38cd 1093 if (ndev->phydev) {
bb7189dc
QX		 1094 h->dev->ops->adjust_link(h, ndev->phydev->speed,
1095 ndev->phydev->duplex);
262b38cd 1096 state = ndev->phydev->link;
bb7189dc
QX		 1097 }
1098 state = state && h->dev->ops->get_status(h);
b5996f11 1099
bb7189dc
QX		 1100 if (state != priv->link) {
1101 if (state) {
1102 netif_carrier_on(ndev);
1103 netif_tx_wake_all_queues(ndev);
1104 netdev_info(ndev, "link up\n");
1105 } else {
1106 netif_carrier_off(ndev);
1107 netdev_info(ndev, "link down\n");
1108 }
1109 priv->link = state;
1110 }
b5996f11 1111}
1112
1113/**
1114 *hns_nic_init_phy - init phy
1115 *@ndev: net device
1116 *@h: ae handle
1117 * Return 0 on success, negative on failure
1118 */
1119int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h)
1120{
652d39b0
KY		 1121 struct phy_device *phy_dev = h->phy_dev;
1122 int ret;
b5996f11 1123
652d39b0 1124 if (!h->phy_dev)
b5996f11 1125 return 0;
1126
652d39b0
KY		 1127 if (h->phy_if != PHY_INTERFACE_MODE_XGMII) {
1128 phy_dev->dev_flags = 0;
b5996f11 1129
652d39b0
KY		 1130 ret = phy_connect_direct(ndev, phy_dev, hns_nic_adjust_link,
1131 h->phy_if);
1132 } else {
1133 ret = phy_attach_direct(ndev, phy_dev, 0, h->phy_if);
1134 }
1135 if (unlikely(ret))
1136 return -ENODEV;
b5996f11 1137
1138 phy_dev->supported &= h->if_support;
1139 phy_dev->advertising = phy_dev->supported;
1140
1141 if (h->phy_if == PHY_INTERFACE_MODE_XGMII)
1142 phy_dev->autoneg = false;
1143
b5996f11 1144 return 0;
1145}
1146
1147static int hns_nic_ring_open(struct net_device *netdev, int idx)
1148{
1149 struct hns_nic_priv *priv = netdev_priv(netdev);
1150 struct hnae_handle *h = priv->ae_handle;
1151
1152 napi_enable(&priv->ring_data[idx].napi);
1153
1154 enable_irq(priv->ring_data[idx].ring->irq);
1155 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0);
1156
1157 return 0;
1158}
1159
1160static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p)
1161{
1162 struct hns_nic_priv *priv = netdev_priv(ndev);
1163 struct hnae_handle *h = priv->ae_handle;
1164 struct sockaddr *mac_addr = p;
1165 int ret;
1166
1167 if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
1168 return -EADDRNOTAVAIL;
1169
1170 ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data);
1171 if (ret) {
1172 netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret);
1173 return ret;
1174 }
1175
1176 memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len);
1177
1178 return 0;
1179}
1180
1181void hns_nic_update_stats(struct net_device *netdev)
1182{
1183 struct hns_nic_priv *priv = netdev_priv(netdev);
1184 struct hnae_handle *h = priv->ae_handle;
1185
1186 h->dev->ops->update_stats(h, &netdev->stats);
1187}
1188
1189/* set mac addr if it is configed. or leave it to the AE driver */
1190static void hns_init_mac_addr(struct net_device *ndev)
1191{
1192 struct hns_nic_priv *priv = netdev_priv(ndev);
b5996f11 1193
6162928c 1194 if (!device_get_mac_address(priv->dev, ndev->dev_addr, ETH_ALEN)) {
b5996f11 1195 eth_hw_addr_random(ndev);
1196 dev_warn(priv->dev, "No valid mac, use random mac %pM",
1197 ndev->dev_addr);
1198 }
1199}
1200
1201static void hns_nic_ring_close(struct net_device *netdev, int idx)
1202{
1203 struct hns_nic_priv *priv = netdev_priv(netdev);
1204 struct hnae_handle *h = priv->ae_handle;
1205
1206 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1);
1207 disable_irq(priv->ring_data[idx].ring->irq);
1208
1209 napi_disable(&priv->ring_data[idx].napi);
1210}
1211
df7adf84 1212static int hns_nic_init_affinity_mask(int q_num, int ring_idx,
1213 struct hnae_ring *ring, cpumask_t *mask)
b5996f11 1214{
b5996f11 1215 int cpu;
727f9c1a 1216
df7adf84 1217 /* Diffrent irq banlance between 16core and 32core.
1218 * The cpu mask set by ring index according to the ring flag
1219 * which indicate the ring is tx or rx.
1220 */
1221 if (q_num == num_possible_cpus()) {
1222 if (is_tx_ring(ring))
1223 cpu = ring_idx;
1224 else
1225 cpu = ring_idx - q_num;
13ac695e 1226 } else {
df7adf84 1227 if (is_tx_ring(ring))
1228 cpu = ring_idx * 2;
1229 else
1230 cpu = (ring_idx - q_num) * 2 + 1;
13ac695e 1231 }
727f9c1a 1232
df7adf84 1233 cpumask_clear(mask);
1234 cpumask_set_cpu(cpu, mask);
1235
1236 return cpu;
13ac695e
S		 1237}
1238
1239static int hns_nic_init_irq(struct hns_nic_priv *priv)
1240{
1241 struct hnae_handle *h = priv->ae_handle;
1242 struct hns_nic_ring_data *rd;
1243 int i;
1244 int ret;
df7adf84 1245 int cpu;
13ac695e 1246
b5996f11 1247 for (i = 0; i < h->q_num * 2; i++) {
1248 rd = &priv->ring_data[i];
1249
1250 if (rd->ring->irq_init_flag == RCB_IRQ_INITED)
1251 break;
1252
1253 snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN,
1254 "%s-%s%d", priv->netdev->name,
df7adf84 1255 (is_tx_ring(rd->ring) ? "tx" : "rx"), rd->queue_index);
b5996f11 1256
1257 rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0';
1258
1259 ret = request_irq(rd->ring->irq,
1260 hns_irq_handle, 0, rd->ring->ring_name, rd);
1261 if (ret) {
1262 netdev_err(priv->netdev, "request irq(%d) fail\n",
1263 rd->ring->irq);
1264 return ret;
1265 }
1266 disable_irq(rd->ring->irq);
df7adf84 1267
1268 cpu = hns_nic_init_affinity_mask(h->q_num, i,
1269 rd->ring, &rd->mask);
1270
1271 if (cpu_online(cpu))
1272 irq_set_affinity_hint(rd->ring->irq,
1273 &rd->mask);
1274
b5996f11 1275 rd->ring->irq_init_flag = RCB_IRQ_INITED;
b5996f11 1276 }
1277
1278 return 0;
1279}
1280
1281static int hns_nic_net_up(struct net_device *ndev)
1282{
1283 struct hns_nic_priv *priv = netdev_priv(ndev);
1284 struct hnae_handle *h = priv->ae_handle;
454784d8 1285 int i, j;
b5996f11 1286 int ret;
1287
1288 ret = hns_nic_init_irq(priv);
1289 if (ret != 0) {
1290 netdev_err(ndev, "hns init irq failed! ret=%d\n", ret);
1291 return ret;
1292 }
1293
1294 for (i = 0; i < h->q_num * 2; i++) {
1295 ret = hns_nic_ring_open(ndev, i);
1296 if (ret)
1297 goto out_has_some_queues;
1298 }
1299
b5996f11 1300 ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr);
1301 if (ret)
1302 goto out_set_mac_addr_err;
1303
1304 ret = h->dev->ops->start ? h->dev->ops->start(h) : 0;
1305 if (ret)
1306 goto out_start_err;
1307
262b38cd
PR		 1308 if (ndev->phydev)
1309 phy_start(ndev->phydev);
b5996f11 1310
1311 clear_bit(NIC_STATE_DOWN, &priv->state);
1312 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
1313
1314 return 0;
1315
1316out_start_err:
1317 netif_stop_queue(ndev);
1318out_set_mac_addr_err:
b5996f11 1319out_has_some_queues:
1320 for (j = i - 1; j >= 0; j--)
1321 hns_nic_ring_close(ndev, j);
1322
1323 set_bit(NIC_STATE_DOWN, &priv->state);
1324
1325 return ret;
1326}
1327
1328static void hns_nic_net_down(struct net_device *ndev)
1329{
1330 int i;
1331 struct hnae_ae_ops *ops;
1332 struct hns_nic_priv *priv = netdev_priv(ndev);
1333
1334 if (test_and_set_bit(NIC_STATE_DOWN, &priv->state))
1335 return;
1336
1337 (void)del_timer_sync(&priv->service_timer);
1338 netif_tx_stop_all_queues(ndev);
1339 netif_carrier_off(ndev);
1340 netif_tx_disable(ndev);
1341 priv->link = 0;
1342
262b38cd
PR		 1343 if (ndev->phydev)
1344 phy_stop(ndev->phydev);
b5996f11 1345
1346 ops = priv->ae_handle->dev->ops;
1347
1348 if (ops->stop)
1349 ops->stop(priv->ae_handle);
1350
1351 netif_tx_stop_all_queues(ndev);
1352
1353 for (i = priv->ae_handle->q_num - 1; i >= 0; i--) {
1354 hns_nic_ring_close(ndev, i);
1355 hns_nic_ring_close(ndev, i + priv->ae_handle->q_num);
1356
1357 /* clean tx buffers*/
1358 hns_nic_tx_clr_all_bufs(priv->ring_data + i);
1359 }
1360}
1361
1362void hns_nic_net_reset(struct net_device *ndev)
1363{
1364 struct hns_nic_priv *priv = netdev_priv(ndev);
1365 struct hnae_handle *handle = priv->ae_handle;
1366
1367 while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state))
1368 usleep_range(1000, 2000);
1369
1370 (void)hnae_reinit_handle(handle);
1371
1372 clear_bit(NIC_STATE_RESETTING, &priv->state);
1373}
1374
1375void hns_nic_net_reinit(struct net_device *netdev)
1376{
1377 struct hns_nic_priv *priv = netdev_priv(netdev);
bb5eeb16 1378 enum hnae_port_type type = priv->ae_handle->port_type;
b5996f11 1379
860e9538 1380 netif_trans_update(priv->netdev);
b5996f11 1381 while (test_and_set_bit(NIC_STATE_REINITING, &priv->state))
1382 usleep_range(1000, 2000);
1383
1384 hns_nic_net_down(netdev);
bb5eeb16
LYS		 1385
1386 /* Only do hns_nic_net_reset in debug mode
1387 * because of hardware limitation.
1388 */
1389 if (type == HNAE_PORT_DEBUG)
1390 hns_nic_net_reset(netdev);
1391
b5996f11 1392 (void)hns_nic_net_up(netdev);
1393 clear_bit(NIC_STATE_REINITING, &priv->state);
1394}
1395
1396static int hns_nic_net_open(struct net_device *ndev)
1397{
1398 struct hns_nic_priv *priv = netdev_priv(ndev);
1399 struct hnae_handle *h = priv->ae_handle;
1400 int ret;
1401
1402 if (test_bit(NIC_STATE_TESTING, &priv->state))
1403 return -EBUSY;
1404
1405 priv->link = 0;
1406 netif_carrier_off(ndev);
1407
1408 ret = netif_set_real_num_tx_queues(ndev, h->q_num);
1409 if (ret < 0) {
1410 netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n",
1411 ret);
1412 return ret;
1413 }
1414
1415 ret = netif_set_real_num_rx_queues(ndev, h->q_num);
1416 if (ret < 0) {
1417 netdev_err(ndev,
1418 "netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
1419 return ret;
1420 }
1421
1422 ret = hns_nic_net_up(ndev);
1423 if (ret) {
1424 netdev_err(ndev,
1425 "hns net up fail, ret=%d!\n", ret);
1426 return ret;
1427 }
1428
1429 return 0;
1430}
1431
1432static int hns_nic_net_stop(struct net_device *ndev)
1433{
1434 hns_nic_net_down(ndev);
1435
1436 return 0;
1437}
1438
1439static void hns_tx_timeout_reset(struct hns_nic_priv *priv);
1440static void hns_nic_net_timeout(struct net_device *ndev)
1441{
1442 struct hns_nic_priv *priv = netdev_priv(ndev);
1443
1444 hns_tx_timeout_reset(priv);
1445}
1446
1447static int hns_nic_do_ioctl(struct net_device *netdev, struct ifreq *ifr,
1448 int cmd)
1449{
262b38cd 1450 struct phy_device *phy_dev = netdev->phydev;
b5996f11 1451
1452 if (!netif_running(netdev))
1453 return -EINVAL;
1454
1455 if (!phy_dev)
1456 return -ENOTSUPP;
1457
1458 return phy_mii_ioctl(phy_dev, ifr, cmd);
1459}
1460
1461/* use only for netconsole to poll with the device without interrupt */
1462#ifdef CONFIG_NET_POLL_CONTROLLER
1463void hns_nic_poll_controller(struct net_device *ndev)
1464{
1465 struct hns_nic_priv *priv = netdev_priv(ndev);
1466 unsigned long flags;
1467 int i;
1468
1469 local_irq_save(flags);
1470 for (i = 0; i < priv->ae_handle->q_num * 2; i++)
1471 napi_schedule(&priv->ring_data[i].napi);
1472 local_irq_restore(flags);
1473}
1474#endif
1475
1476static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb,
1477 struct net_device *ndev)
1478{
1479 struct hns_nic_priv *priv = netdev_priv(ndev);
1480 int ret;
1481
1482 assert(skb->queue_mapping < ndev->ae_handle->q_num);
1483 ret = hns_nic_net_xmit_hw(ndev, skb,
1484 &tx_ring_data(priv, skb->queue_mapping));
1485 if (ret == NETDEV_TX_OK) {
860e9538 1486 netif_trans_update(ndev);
b5996f11 1487 ndev->stats.tx_bytes += skb->len;
1488 ndev->stats.tx_packets++;
1489 }
1490 return (netdev_tx_t)ret;
1491}
1492
8cefd2ad 1493static void hns_nic_drop_rx_fetch(struct hns_nic_ring_data *ring_data,
1494 struct sk_buff *skb)
1495{
1496 dev_kfree_skb_any(skb);
1497}
1498
1499#define HNS_LB_TX_RING 0
1500static struct sk_buff *hns_assemble_skb(struct net_device *ndev)
1501{
1502 struct sk_buff *skb;
1503 struct ethhdr *ethhdr;
1504 int frame_len;
1505
1506 /* allocate test skb */
1507 skb = alloc_skb(64, GFP_KERNEL);
1508 if (!skb)
1509 return NULL;
1510
1511 skb_put(skb, 64);
1512 skb->dev = ndev;
1513 memset(skb->data, 0xFF, skb->len);
1514
1515 /* must be tcp/ip package */
1516 ethhdr = (struct ethhdr *)skb->data;
1517 ethhdr->h_proto = htons(ETH_P_IP);
1518
1519 frame_len = skb->len & (~1ul);
1520 memset(&skb->data[frame_len / 2], 0xAA,
1521 frame_len / 2 - 1);
1522
1523 skb->queue_mapping = HNS_LB_TX_RING;
1524
1525 return skb;
1526}
1527
1528static int hns_enable_serdes_lb(struct net_device *ndev)
1529{
1530 struct hns_nic_priv *priv = netdev_priv(ndev);
1531 struct hnae_handle *h = priv->ae_handle;
1532 struct hnae_ae_ops *ops = h->dev->ops;
1533 int speed, duplex;
1534 int ret;
1535
1536 ret = ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 1);
1537 if (ret)
1538 return ret;
1539
1540 ret = ops->start ? ops->start(h) : 0;
1541 if (ret)
1542 return ret;
1543
1544 /* link adjust duplex*/
1545 if (h->phy_if != PHY_INTERFACE_MODE_XGMII)
1546 speed = 1000;
1547 else
1548 speed = 10000;
1549 duplex = 1;
1550
1551 ops->adjust_link(h, speed, duplex);
1552
1553 /* wait h/w ready */
1554 mdelay(300);
1555
1556 return 0;
1557}
1558
1559static void hns_disable_serdes_lb(struct net_device *ndev)
1560{
1561 struct hns_nic_priv *priv = netdev_priv(ndev);
1562 struct hnae_handle *h = priv->ae_handle;
1563 struct hnae_ae_ops *ops = h->dev->ops;
1564
1565 ops->stop(h);
1566 ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 0);
1567}
1568
1569/**
1570 *hns_nic_clear_all_rx_fetch - clear the chip fetched descriptions. The
1571 *function as follows:
1572 * 1. if one rx ring has found the page_offset is not equal 0 between head
1573 * and tail, it means that the chip fetched the wrong descs for the ring
1574 * which buffer size is 4096.
1575 * 2. we set the chip serdes loopback and set rss indirection to the ring.
1576 * 3. construct 64-bytes ip broadcast packages, wait the associated rx ring
1577 * recieving all packages and it will fetch new descriptions.
1578 * 4. recover to the original state.
1579 *
1580 *@ndev: net device
1581 */
1582static int hns_nic_clear_all_rx_fetch(struct net_device *ndev)
1583{
1584 struct hns_nic_priv *priv = netdev_priv(ndev);
1585 struct hnae_handle *h = priv->ae_handle;
1586 struct hnae_ae_ops *ops = h->dev->ops;
1587 struct hns_nic_ring_data *rd;
1588 struct hnae_ring *ring;
1589 struct sk_buff *skb;
1590 u32 *org_indir;
1591 u32 *cur_indir;
1592 int indir_size;
1593 int head, tail;
1594 int fetch_num;
1595 int i, j;
1596 bool found;
1597 int retry_times;
1598 int ret = 0;
1599
1600 /* alloc indir memory */
1601 indir_size = ops->get_rss_indir_size(h) * sizeof(*org_indir);
1602 org_indir = kzalloc(indir_size, GFP_KERNEL);
1603 if (!org_indir)
1604 return -ENOMEM;
1605
1606 /* store the orginal indirection */
1607 ops->get_rss(h, org_indir, NULL, NULL);
1608
1609 cur_indir = kzalloc(indir_size, GFP_KERNEL);
1610 if (!cur_indir) {
1611 ret = -ENOMEM;
1612 goto cur_indir_alloc_err;
1613 }
1614
1615 /* set loopback */
1616 if (hns_enable_serdes_lb(ndev)) {
1617 ret = -EINVAL;
1618 goto enable_serdes_lb_err;
1619 }
1620
1621 /* foreach every rx ring to clear fetch desc */
1622 for (i = 0; i < h->q_num; i++) {
1623 ring = &h->qs[i]->rx_ring;
1624 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
1625 tail = readl_relaxed(ring->io_base + RCB_REG_TAIL);
1626 found = false;
1627 fetch_num = ring_dist(ring, head, tail);
1628
1629 while (head != tail) {
1630 if (ring->desc_cb[head].page_offset != 0) {
1631 found = true;
1632 break;
1633 }
1634
1635 head++;
1636 if (head == ring->desc_num)
1637 head = 0;
1638 }
1639
1640 if (found) {
1641 for (j = 0; j < indir_size / sizeof(*org_indir); j++)
1642 cur_indir[j] = i;
1643 ops->set_rss(h, cur_indir, NULL, 0);
1644
1645 for (j = 0; j < fetch_num; j++) {
1646 /* alloc one skb and init */
1647 skb = hns_assemble_skb(ndev);
1648 if (!skb)
1649 goto out;
1650 rd = &tx_ring_data(priv, skb->queue_mapping);
1651 hns_nic_net_xmit_hw(ndev, skb, rd);
1652
1653 retry_times = 0;
1654 while (retry_times++ < 10) {
1655 mdelay(10);
1656 /* clean rx */
1657 rd = &rx_ring_data(priv, i);
1658 if (rd->poll_one(rd, fetch_num,
1659 hns_nic_drop_rx_fetch))
1660 break;
1661 }
1662
1663 retry_times = 0;
1664 while (retry_times++ < 10) {
1665 mdelay(10);
1666 /* clean tx ring 0 send package */
1667 rd = &tx_ring_data(priv,
1668 HNS_LB_TX_RING);
1669 if (rd->poll_one(rd, fetch_num, NULL))
1670 break;
1671 }
1672 }
1673 }
1674 }
1675
1676out:
1677 /* restore everything */
1678 ops->set_rss(h, org_indir, NULL, 0);
1679 hns_disable_serdes_lb(ndev);
1680enable_serdes_lb_err:
1681 kfree(cur_indir);
1682cur_indir_alloc_err:
1683 kfree(org_indir);
1684
1685 return ret;
1686}
1687
b5996f11 1688static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu)
1689{
1690 struct hns_nic_priv *priv = netdev_priv(ndev);
1691 struct hnae_handle *h = priv->ae_handle;
8cefd2ad 1692 bool if_running = netif_running(ndev);
b5996f11 1693 int ret;
1694
8cefd2ad 1695 /* MTU < 68 is an error and causes problems on some kernels */
1696 if (new_mtu < 68)
1697 return -EINVAL;
1698
1699 /* MTU no change */
1700 if (new_mtu == ndev->mtu)
1701 return 0;
1702
b5996f11 1703 if (!h->dev->ops->set_mtu)
1704 return -ENOTSUPP;
1705
8cefd2ad 1706 if (if_running) {
b5996f11 1707 (void)hns_nic_net_stop(ndev);
1708 msleep(100);
8cefd2ad 1709 }
b5996f11 1710
8cefd2ad 1711 if (priv->enet_ver != AE_VERSION_1 &&
1712 ndev->mtu <= BD_SIZE_2048_MAX_MTU &&
1713 new_mtu > BD_SIZE_2048_MAX_MTU) {
1714 /* update desc */
1715 hnae_reinit_all_ring_desc(h);
b5996f11 1716
8cefd2ad 1717 /* clear the package which the chip has fetched */
1718 ret = hns_nic_clear_all_rx_fetch(ndev);
1719
1720 /* the page offset must be consist with desc */
1721 hnae_reinit_all_ring_page_off(h);
1722
1723 if (ret) {
1724 netdev_err(ndev, "clear the fetched desc fail\n");
1725 goto out;
1726 }
1727 }
1728
1729 ret = h->dev->ops->set_mtu(h, new_mtu);
1730 if (ret) {
1731 netdev_err(ndev, "set mtu fail, return value %d\n",
1732 ret);
1733 goto out;
b5996f11 1734 }
1735
8cefd2ad 1736 /* finally, set new mtu to netdevice */
1737 ndev->mtu = new_mtu;
1738
1739out:
1740 if (if_running) {
1741 if (hns_nic_net_open(ndev)) {
1742 netdev_err(ndev, "hns net open fail\n");
1743 ret = -EINVAL;
1744 }
1745 }
b5996f11 1746
1747 return ret;
1748}
1749
38f616da
S		 1750static int hns_nic_set_features(struct net_device *netdev,
1751 netdev_features_t features)
1752{
1753 struct hns_nic_priv *priv = netdev_priv(netdev);
38f616da
S		 1754
1755 switch (priv->enet_ver) {
1756 case AE_VERSION_1:
1757 if (features & (NETIF_F_TSO | NETIF_F_TSO6))
1758 netdev_info(netdev, "enet v1 do not support tso!\n");
1759 break;
1760 default:
1761 if (features & (NETIF_F_TSO | NETIF_F_TSO6)) {
1762 priv->ops.fill_desc = fill_tso_desc;
1763 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
1764 /* The chip only support 7*4096 */
1765 netif_set_gso_max_size(netdev, 7 * 4096);
38f616da
S		 1766 } else {
1767 priv->ops.fill_desc = fill_v2_desc;
1768 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
38f616da
S		 1769 }
1770 break;
1771 }
1772 netdev->features = features;
1773 return 0;
1774}
1775
1776static netdev_features_t hns_nic_fix_features(
1777 struct net_device *netdev, netdev_features_t features)
1778{
1779 struct hns_nic_priv *priv = netdev_priv(netdev);
1780
1781 switch (priv->enet_ver) {
1782 case AE_VERSION_1:
1783 features &= ~(NETIF_F_TSO | NETIF_F_TSO6 |
1784 NETIF_F_HW_VLAN_CTAG_FILTER);
1785 break;
1786 default:
1787 break;
1788 }
1789 return features;
1790}
1791
66355f52
KY		 1792static int hns_nic_uc_sync(struct net_device *netdev, const unsigned char *addr)
1793{
1794 struct hns_nic_priv *priv = netdev_priv(netdev);
1795 struct hnae_handle *h = priv->ae_handle;
1796
1797 if (h->dev->ops->add_uc_addr)
1798 return h->dev->ops->add_uc_addr(h, addr);
1799
1800 return 0;
1801}
1802
1803static int hns_nic_uc_unsync(struct net_device *netdev,
1804 const unsigned char *addr)
1805{
1806 struct hns_nic_priv *priv = netdev_priv(netdev);
1807 struct hnae_handle *h = priv->ae_handle;
1808
1809 if (h->dev->ops->rm_uc_addr)
1810 return h->dev->ops->rm_uc_addr(h, addr);
1811
1812 return 0;
1813}
1814
b5996f11 1815/**
1816 * nic_set_multicast_list - set mutl mac address
1817 * @netdev: net device
1818 * @p: mac address
1819 *
1820 * return void
1821 */
1822void hns_set_multicast_list(struct net_device *ndev)
1823{
1824 struct hns_nic_priv *priv = netdev_priv(ndev);
1825 struct hnae_handle *h = priv->ae_handle;
1826 struct netdev_hw_addr *ha = NULL;
1827
1828 if (!h) {
1829 netdev_err(ndev, "hnae handle is null\n");
1830 return;
1831 }
1832
ec2cafe6
KY		 1833 if (h->dev->ops->clr_mc_addr)
1834 if (h->dev->ops->clr_mc_addr(h))
1835 netdev_err(ndev, "clear multicast address fail\n");
1836
b5996f11 1837 if (h->dev->ops->set_mc_addr) {
1838 netdev_for_each_mc_addr(ha, ndev)
1839 if (h->dev->ops->set_mc_addr(h, ha->addr))
1840 netdev_err(ndev, "set multicast fail\n");
1841 }
1842}
1843
4568637f 1844void hns_nic_set_rx_mode(struct net_device *ndev)
1845{
1846 struct hns_nic_priv *priv = netdev_priv(ndev);
1847 struct hnae_handle *h = priv->ae_handle;
1848
1849 if (h->dev->ops->set_promisc_mode) {
1850 if (ndev->flags & IFF_PROMISC)
1851 h->dev->ops->set_promisc_mode(h, 1);
1852 else
1853 h->dev->ops->set_promisc_mode(h, 0);
1854 }
1855
1856 hns_set_multicast_list(ndev);
66355f52
KY		 1857
1858 if (__dev_uc_sync(ndev, hns_nic_uc_sync, hns_nic_uc_unsync))
1859 netdev_err(ndev, "sync uc address fail\n");
4568637f 1860}
1861
b5996f11 1862struct rtnl_link_stats64 *hns_nic_get_stats64(struct net_device *ndev,
1863 struct rtnl_link_stats64 *stats)
1864{
1865 int idx = 0;
1866 u64 tx_bytes = 0;
1867 u64 rx_bytes = 0;
1868 u64 tx_pkts = 0;
1869 u64 rx_pkts = 0;
1870 struct hns_nic_priv *priv = netdev_priv(ndev);
1871 struct hnae_handle *h = priv->ae_handle;
1872
1873 for (idx = 0; idx < h->q_num; idx++) {
1874 tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes;
1875 tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts;
1876 rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes;
1877 rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts;
1878 }
1879
1880 stats->tx_bytes = tx_bytes;
1881 stats->tx_packets = tx_pkts;
1882 stats->rx_bytes = rx_bytes;
1883 stats->rx_packets = rx_pkts;
1884
1885 stats->rx_errors = ndev->stats.rx_errors;
1886 stats->multicast = ndev->stats.multicast;
1887 stats->rx_length_errors = ndev->stats.rx_length_errors;
1888 stats->rx_crc_errors = ndev->stats.rx_crc_errors;
1889 stats->rx_missed_errors = ndev->stats.rx_missed_errors;
1890
1891 stats->tx_errors = ndev->stats.tx_errors;
1892 stats->rx_dropped = ndev->stats.rx_dropped;
1893 stats->tx_dropped = ndev->stats.tx_dropped;
1894 stats->collisions = ndev->stats.collisions;
1895 stats->rx_over_errors = ndev->stats.rx_over_errors;
1896 stats->rx_frame_errors = ndev->stats.rx_frame_errors;
1897 stats->rx_fifo_errors = ndev->stats.rx_fifo_errors;
1898 stats->tx_aborted_errors = ndev->stats.tx_aborted_errors;
1899 stats->tx_carrier_errors = ndev->stats.tx_carrier_errors;
1900 stats->tx_fifo_errors = ndev->stats.tx_fifo_errors;
1901 stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors;
1902 stats->tx_window_errors = ndev->stats.tx_window_errors;
1903 stats->rx_compressed = ndev->stats.rx_compressed;
1904 stats->tx_compressed = ndev->stats.tx_compressed;
1905
1906 return stats;
1907}
1908
2162a4a1
DH		 1909static u16
1910hns_nic_select_queue(struct net_device *ndev, struct sk_buff *skb,
1911 void *accel_priv, select_queue_fallback_t fallback)
1912{
1913 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
1914 struct hns_nic_priv *priv = netdev_priv(ndev);
1915
1916 /* fix hardware broadcast/multicast packets queue loopback */
1917 if (!AE_IS_VER1(priv->enet_ver) &&
1918 is_multicast_ether_addr(eth_hdr->h_dest))
1919 return 0;
1920 else
1921 return fallback(ndev, skb);
1922}
1923
b5996f11 1924static const struct net_device_ops hns_nic_netdev_ops = {
1925 .ndo_open = hns_nic_net_open,
1926 .ndo_stop = hns_nic_net_stop,
1927 .ndo_start_xmit = hns_nic_net_xmit,
1928 .ndo_tx_timeout = hns_nic_net_timeout,
1929 .ndo_set_mac_address = hns_nic_net_set_mac_address,
1930 .ndo_change_mtu = hns_nic_change_mtu,
1931 .ndo_do_ioctl = hns_nic_do_ioctl,
38f616da
S		 1932 .ndo_set_features = hns_nic_set_features,
1933 .ndo_fix_features = hns_nic_fix_features,
b5996f11 1934 .ndo_get_stats64 = hns_nic_get_stats64,
1935#ifdef CONFIG_NET_POLL_CONTROLLER
1936 .ndo_poll_controller = hns_nic_poll_controller,
1937#endif
4568637f 1938 .ndo_set_rx_mode = hns_nic_set_rx_mode,
2162a4a1 1939 .ndo_select_queue = hns_nic_select_queue,
b5996f11 1940};
1941
1942static void hns_nic_update_link_status(struct net_device *netdev)
1943{
1944 struct hns_nic_priv *priv = netdev_priv(netdev);
1945
1946 struct hnae_handle *h = priv->ae_handle;
b5996f11 1947
bb7189dc
QX		 1948 if (h->phy_dev) {
1949 if (h->phy_if != PHY_INTERFACE_MODE_XGMII)
1950 return;
b5996f11 1951
bb7189dc 1952 (void)genphy_read_status(h->phy_dev);
b5996f11 1953 }
bb7189dc 1954 hns_nic_adjust_link(netdev);
b5996f11 1955}
1956
1957/* for dumping key regs*/
1958static void hns_nic_dump(struct hns_nic_priv *priv)
1959{
1960 struct hnae_handle *h = priv->ae_handle;
1961 struct hnae_ae_ops *ops = h->dev->ops;
1962 u32 *data, reg_num, i;
1963
1964 if (ops->get_regs_len && ops->get_regs) {
1965 reg_num = ops->get_regs_len(priv->ae_handle);
1966 reg_num = (reg_num + 3ul) & ~3ul;
1967 data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL);
1968 if (data) {
1969 ops->get_regs(priv->ae_handle, data);
1970 for (i = 0; i < reg_num; i += 4)
1971 pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
1972 i, data[i], data[i + 1],
1973 data[i + 2], data[i + 3]);
1974 kfree(data);
1975 }
1976 }
1977
1978 for (i = 0; i < h->q_num; i++) {
1979 pr_info("tx_queue%d_next_to_clean:%d\n",
1980 i, h->qs[i]->tx_ring.next_to_clean);
1981 pr_info("tx_queue%d_next_to_use:%d\n",
1982 i, h->qs[i]->tx_ring.next_to_use);
1983 pr_info("rx_queue%d_next_to_clean:%d\n",
1984 i, h->qs[i]->rx_ring.next_to_clean);
1985 pr_info("rx_queue%d_next_to_use:%d\n",
1986 i, h->qs[i]->rx_ring.next_to_use);
1987 }
1988}
1989
f7211729 1990/* for resetting subtask */
b5996f11 1991static void hns_nic_reset_subtask(struct hns_nic_priv *priv)
1992{
1993 enum hnae_port_type type = priv->ae_handle->port_type;
1994
1995 if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state))
1996 return;
1997 clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
1998
1999 /* If we're already down, removing or resetting, just bail */
2000 if (test_bit(NIC_STATE_DOWN, &priv->state) ||
2001 test_bit(NIC_STATE_REMOVING, &priv->state) ||
2002 test_bit(NIC_STATE_RESETTING, &priv->state))
2003 return;
2004
2005 hns_nic_dump(priv);
13ac695e
S		 2006 netdev_info(priv->netdev, "try to reset %s port!\n",
2007 (type == HNAE_PORT_DEBUG ? "debug" : "service"));
b5996f11 2008
2009 rtnl_lock();
90a505b9 2010 /* put off any impending NetWatchDogTimeout */
860e9538 2011 netif_trans_update(priv->netdev);
bb5eeb16 2012 hns_nic_net_reinit(priv->netdev);
90a505b9 2013
b5996f11 2014 rtnl_unlock();
2015}
2016
2017/* for doing service complete*/
2018static void hns_nic_service_event_complete(struct hns_nic_priv *priv)
2019{
13ac695e 2020 WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state));
a82e6438 2021 /* make sure to commit the things */
b5996f11 2022 smp_mb__before_atomic();
2023 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
2024}
2025
2026static void hns_nic_service_task(struct work_struct *work)
2027{
2028 struct hns_nic_priv *priv
2029 = container_of(work, struct hns_nic_priv, service_task);
2030 struct hnae_handle *h = priv->ae_handle;
2031
2032 hns_nic_update_link_status(priv->netdev);
2033 h->dev->ops->update_led_status(h);
2034 hns_nic_update_stats(priv->netdev);
2035
2036 hns_nic_reset_subtask(priv);
2037 hns_nic_service_event_complete(priv);
2038}
2039
2040static void hns_nic_task_schedule(struct hns_nic_priv *priv)
2041{
2042 if (!test_bit(NIC_STATE_DOWN, &priv->state) &&
2043 !test_bit(NIC_STATE_REMOVING, &priv->state) &&
2044 !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state))
2045 (void)schedule_work(&priv->service_task);
2046}
2047
2048static void hns_nic_service_timer(unsigned long data)
2049{
2050 struct hns_nic_priv *priv = (struct hns_nic_priv *)data;
2051
2052 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
2053
2054 hns_nic_task_schedule(priv);
2055}
2056
2057/**
2058 * hns_tx_timeout_reset - initiate reset due to Tx timeout
2059 * @priv: driver private struct
2060 **/
2061static void hns_tx_timeout_reset(struct hns_nic_priv *priv)
2062{
2063 /* Do the reset outside of interrupt context */
2064 if (!test_bit(NIC_STATE_DOWN, &priv->state)) {
2065 set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
2066 netdev_warn(priv->netdev,
2067 "initiating reset due to tx timeout(%llu,0x%lx)\n",
2068 priv->tx_timeout_count, priv->state);
2069 priv->tx_timeout_count++;
2070 hns_nic_task_schedule(priv);
2071 }
2072}
2073
2074static int hns_nic_init_ring_data(struct hns_nic_priv *priv)
2075{
2076 struct hnae_handle *h = priv->ae_handle;
2077 struct hns_nic_ring_data *rd;
4b34aa41 2078 bool is_ver1 = AE_IS_VER1(priv->enet_ver);
b5996f11 2079 int i;
2080
2081 if (h->q_num > NIC_MAX_Q_PER_VF) {
2082 netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num);
2083 return -EINVAL;
2084 }
2085
2086 priv->ring_data = kzalloc(h->q_num * sizeof(*priv->ring_data) * 2,
2087 GFP_KERNEL);
2088 if (!priv->ring_data)
2089 return -ENOMEM;
2090
2091 for (i = 0; i < h->q_num; i++) {
2092 rd = &priv->ring_data[i];
2093 rd->queue_index = i;
2094 rd->ring = &h->qs[i]->tx_ring;
2095 rd->poll_one = hns_nic_tx_poll_one;
cee5add4
DH		 2096 rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro :
2097 hns_nic_tx_fini_pro_v2;
b5996f11 2098
2099 netif_napi_add(priv->netdev, &rd->napi,
2100 hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM);
2101 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
2102 }
2103 for (i = h->q_num; i < h->q_num * 2; i++) {
2104 rd = &priv->ring_data[i];
2105 rd->queue_index = i - h->q_num;
2106 rd->ring = &h->qs[i - h->q_num]->rx_ring;
2107 rd->poll_one = hns_nic_rx_poll_one;
2108 rd->ex_process = hns_nic_rx_up_pro;
cee5add4
DH		 2109 rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro :
2110 hns_nic_rx_fini_pro_v2;
b5996f11 2111
2112 netif_napi_add(priv->netdev, &rd->napi,
2113 hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM);
2114 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
2115 }
2116
2117 return 0;
2118}
2119
2120static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv)
2121{
2122 struct hnae_handle *h = priv->ae_handle;
2123 int i;
2124
2125 for (i = 0; i < h->q_num * 2; i++) {
2126 netif_napi_del(&priv->ring_data[i].napi);
2127 if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) {
13ac695e
S		 2128 (void)irq_set_affinity_hint(
2129 priv->ring_data[i].ring->irq,
2130 NULL);
b5996f11 2131 free_irq(priv->ring_data[i].ring->irq,
2132 &priv->ring_data[i]);
2133 }
2134
2135 priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED;
2136 }
2137 kfree(priv->ring_data);
2138}
2139
13ac695e
S		 2140static void hns_nic_set_priv_ops(struct net_device *netdev)
2141{
2142 struct hns_nic_priv *priv = netdev_priv(netdev);
64353af6 2143 struct hnae_handle *h = priv->ae_handle;
13ac695e
S		 2144
2145 if (AE_IS_VER1(priv->enet_ver)) {
2146 priv->ops.fill_desc = fill_desc;
2147 priv->ops.get_rxd_bnum = get_rx_desc_bnum;
2148 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
2149 } else {
2150 priv->ops.get_rxd_bnum = get_v2rx_desc_bnum;
64353af6
S		 2151 if ((netdev->features & NETIF_F_TSO) ||
2152 (netdev->features & NETIF_F_TSO6)) {
2153 priv->ops.fill_desc = fill_tso_desc;
2154 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
2155 /* This chip only support 7*4096 */
2156 netif_set_gso_max_size(netdev, 7 * 4096);
64353af6
S		 2157 } else {
2158 priv->ops.fill_desc = fill_v2_desc;
2159 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
2160 }
6fe27464
DH		 2161 /* enable tso when init
2162 * control tso on/off through TSE bit in bd
2163 */
2164 h->dev->ops->set_tso_stats(h, 1);
13ac695e
S		 2165 }
2166}
2167
b5996f11 2168static int hns_nic_try_get_ae(struct net_device *ndev)
2169{
2170 struct hns_nic_priv *priv = netdev_priv(ndev);
2171 struct hnae_handle *h;
2172 int ret;
2173
2174 h = hnae_get_handle(&priv->netdev->dev,
7b2acae6 2175 priv->fwnode, priv->port_id, NULL);
b5996f11 2176 if (IS_ERR_OR_NULL(h)) {
daa8cfd9 2177 ret = -ENODEV;
b5996f11 2178 dev_dbg(priv->dev, "has not handle, register notifier!\n");
2179 goto out;
2180 }
2181 priv->ae_handle = h;
2182
2183 ret = hns_nic_init_phy(ndev, h);
2184 if (ret) {
2185 dev_err(priv->dev, "probe phy device fail!\n");
2186 goto out_init_phy;
2187 }
2188
2189 ret = hns_nic_init_ring_data(priv);
2190 if (ret) {
2191 ret = -ENOMEM;
2192 goto out_init_ring_data;
2193 }
2194
13ac695e
S		 2195 hns_nic_set_priv_ops(ndev);
2196
b5996f11 2197 ret = register_netdev(ndev);
2198 if (ret) {
2199 dev_err(priv->dev, "probe register netdev fail!\n");
2200 goto out_reg_ndev_fail;
2201 }
2202 return 0;
2203
2204out_reg_ndev_fail:
2205 hns_nic_uninit_ring_data(priv);
2206 priv->ring_data = NULL;
2207out_init_phy:
2208out_init_ring_data:
2209 hnae_put_handle(priv->ae_handle);
2210 priv->ae_handle = NULL;
2211out:
2212 return ret;
2213}
2214
2215static int hns_nic_notifier_action(struct notifier_block *nb,
2216 unsigned long action, void *data)
2217{
2218 struct hns_nic_priv *priv =
2219 container_of(nb, struct hns_nic_priv, notifier_block);
2220
2221 assert(action == HNAE_AE_REGISTER);
2222
2223 if (!hns_nic_try_get_ae(priv->netdev)) {
2224 hnae_unregister_notifier(&priv->notifier_block);
2225 priv->notifier_block.notifier_call = NULL;
2226 }
2227 return 0;
2228}
2229
2230static int hns_nic_dev_probe(struct platform_device *pdev)
2231{
2232 struct device *dev = &pdev->dev;
2233 struct net_device *ndev;
2234 struct hns_nic_priv *priv;
406adee9 2235 u32 port_id;
b5996f11 2236 int ret;
2237
2238 ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF);
2239 if (!ndev)
2240 return -ENOMEM;
2241
2242 platform_set_drvdata(pdev, ndev);
2243
2244 priv = netdev_priv(ndev);
2245 priv->dev = dev;
2246 priv->netdev = ndev;
2247
63434888
KY		 2248 if (dev_of_node(dev)) {
2249 struct device_node *ae_node;
b5996f11 2250
63434888
KY		 2251 if (of_device_is_compatible(dev->of_node,
2252 "hisilicon,hns-nic-v1"))
2253 priv->enet_ver = AE_VERSION_1;
2254 else
2255 priv->enet_ver = AE_VERSION_2;
2256
2257 ae_node = of_parse_phandle(dev->of_node, "ae-handle", 0);
2258 if (IS_ERR_OR_NULL(ae_node)) {
2259 ret = PTR_ERR(ae_node);
2260 dev_err(dev, "not find ae-handle\n");
2261 goto out_read_prop_fail;
2262 }
2263 priv->fwnode = &ae_node->fwnode;
2264 } else if (is_acpi_node(dev->fwnode)) {
2265 struct acpi_reference_args args;
2266
2267 if (acpi_dev_found(hns_enet_acpi_match[0].id))
2268 priv->enet_ver = AE_VERSION_1;
2269 else if (acpi_dev_found(hns_enet_acpi_match[1].id))
2270 priv->enet_ver = AE_VERSION_2;
2271 else
2272 return -ENXIO;
2273
2274 /* try to find port-idx-in-ae first */
2275 ret = acpi_node_get_property_reference(dev->fwnode,
2276 "ae-handle", 0, &args);
2277 if (ret) {
2278 dev_err(dev, "not find ae-handle\n");
2279 goto out_read_prop_fail;
2280 }
2281 priv->fwnode = acpi_fwnode_handle(args.adev);
2282 } else {
2283 dev_err(dev, "cannot read cfg data from OF or acpi\n");
2284 return -ENXIO;
48189d6a 2285 }
7b2acae6 2286
6162928c 2287 ret = device_property_read_u32(dev, "port-idx-in-ae", &port_id);
406adee9
YZZ		 2288 if (ret) {
2289 /* only for old code compatible */
6162928c 2290 ret = device_property_read_u32(dev, "port-id", &port_id);
406adee9
YZZ		 2291 if (ret)
2292 goto out_read_prop_fail;
2293 /* for old dts, we need to caculate the port offset */
2294 port_id = port_id < HNS_SRV_OFFSET ? port_id + HNS_DEBUG_OFFSET
2295 : port_id - HNS_SRV_OFFSET;
2296 }
2297 priv->port_id = port_id;
b5996f11 2298
2299 hns_init_mac_addr(ndev);
2300
2301 ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT;
2302 ndev->priv_flags |= IFF_UNICAST_FLT;
2303 ndev->netdev_ops = &hns_nic_netdev_ops;
2304 hns_ethtool_set_ops(ndev);
13ac695e 2305
b5996f11 2306 ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2307 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
2308 NETIF_F_GRO;
2309 ndev->vlan_features |=
2310 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM;
2311 ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO;
2312
44770e11
JW		 2313 /* MTU range: 68 - 9578 (v1) or 9706 (v2) */
2314 ndev->min_mtu = MAC_MIN_MTU;
13ac695e
S		 2315 switch (priv->enet_ver) {
2316 case AE_VERSION_2:
64353af6 2317 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
13ac695e
S		 2318 ndev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2319 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
64353af6 2320 NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6;
44770e11
JW		 2321 ndev->max_mtu = MAC_MAX_MTU_V2 -
2322 (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
13ac695e
S		 2323 break;
2324 default:
44770e11
JW		 2325 ndev->max_mtu = MAC_MAX_MTU -
2326 (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
13ac695e
S		 2327 break;
2328 }
2329
b5996f11 2330 SET_NETDEV_DEV(ndev, dev);
2331
2332 if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)))
2333 dev_dbg(dev, "set mask to 64bit\n");
2334 else
39c94417 2335 dev_err(dev, "set mask to 64bit fail!\n");
b5996f11 2336
2337 /* carrier off reporting is important to ethtool even BEFORE open */
2338 netif_carrier_off(ndev);
2339
2340 setup_timer(&priv->service_timer, hns_nic_service_timer,
2341 (unsigned long)priv);
2342 INIT_WORK(&priv->service_task, hns_nic_service_task);
2343
2344 set_bit(NIC_STATE_SERVICE_INITED, &priv->state);
2345 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
2346 set_bit(NIC_STATE_DOWN, &priv->state);
2347
2348 if (hns_nic_try_get_ae(priv->netdev)) {
2349 priv->notifier_block.notifier_call = hns_nic_notifier_action;
2350 ret = hnae_register_notifier(&priv->notifier_block);
2351 if (ret) {
2352 dev_err(dev, "register notifier fail!\n");
2353 goto out_notify_fail;
2354 }
2355 dev_dbg(dev, "has not handle, register notifier!\n");
2356 }
2357
2358 return 0;
2359
2360out_notify_fail:
2361 (void)cancel_work_sync(&priv->service_task);
48189d6a 2362out_read_prop_fail:
b5996f11 2363 free_netdev(ndev);
2364 return ret;
2365}
2366
2367static int hns_nic_dev_remove(struct platform_device *pdev)
2368{
2369 struct net_device *ndev = platform_get_drvdata(pdev);
2370 struct hns_nic_priv *priv = netdev_priv(ndev);
2371
2372 if (ndev->reg_state != NETREG_UNINITIALIZED)
2373 unregister_netdev(ndev);
2374
2375 if (priv->ring_data)
2376 hns_nic_uninit_ring_data(priv);
2377 priv->ring_data = NULL;
2378
262b38cd
PR		 2379 if (ndev->phydev)
2380 phy_disconnect(ndev->phydev);
b5996f11 2381
2382 if (!IS_ERR_OR_NULL(priv->ae_handle))
2383 hnae_put_handle(priv->ae_handle);
2384 priv->ae_handle = NULL;
2385 if (priv->notifier_block.notifier_call)
2386 hnae_unregister_notifier(&priv->notifier_block);
2387 priv->notifier_block.notifier_call = NULL;
2388
2389 set_bit(NIC_STATE_REMOVING, &priv->state);
2390 (void)cancel_work_sync(&priv->service_task);
2391
2392 free_netdev(ndev);
2393 return 0;
2394}
2395
2396static const struct of_device_id hns_enet_of_match[] = {
2397 {.compatible = "hisilicon,hns-nic-v1",},
2398 {.compatible = "hisilicon,hns-nic-v2",},
2399 {},
2400};
2401
2402MODULE_DEVICE_TABLE(of, hns_enet_of_match);
2403
2404static struct platform_driver hns_nic_dev_driver = {
2405 .driver = {
2406 .name = "hns-nic",
b5996f11 2407 .of_match_table = hns_enet_of_match,
63434888 2408 .acpi_match_table = ACPI_PTR(hns_enet_acpi_match),
b5996f11 2409 },
2410 .probe = hns_nic_dev_probe,
2411 .remove = hns_nic_dev_remove,
2412};
2413
2414module_platform_driver(hns_nic_dev_driver);
2415
2416MODULE_DESCRIPTION("HISILICON HNS Ethernet driver");
2417MODULE_AUTHOR("Hisilicon, Inc.");
2418MODULE_LICENSE("GPL");
2419MODULE_ALIAS("platform:hns-nic");
ubuntu-zesty-kernel mirror