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net: hns: fix the bug of forwarding table
[mirror_ubuntu-jammy-kernel.git] / drivers / net / ethernet / hisilicon / hns / hns_enet.c
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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"
25
26#define NIC_MAX_Q_PER_VF 16
27#define HNS_NIC_TX_TIMEOUT (5 * HZ)
28
29#define SERVICE_TIMER_HZ (1 * HZ)
30
31#define NIC_TX_CLEAN_MAX_NUM 256
32#define NIC_RX_CLEAN_MAX_NUM 64
33
b5996f11 34#define RCB_IRQ_NOT_INITED 0
35#define RCB_IRQ_INITED 1
9cbe9fd5 36#define HNS_BUFFER_SIZE_2048 2048
b5996f11 37
13ac695e
S		 38#define BD_MAX_SEND_SIZE 8191
39#define SKB_TMP_LEN(SKB) \
40 (((SKB)->transport_header - (SKB)->mac_header) + tcp_hdrlen(SKB))
41
42static 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)
45{
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];
48 struct iphdr *iphdr;
49 struct ipv6hdr *ipv6hdr;
50 struct sk_buff *skb;
13ac695e
S		 51 __be16 protocol;
52 u8 bn_pid = 0;
53 u8 rrcfv = 0;
54 u8 ip_offset = 0;
55 u8 tvsvsn = 0;
56 u16 mss = 0;
57 u8 l4_len = 0;
58 u16 paylen = 0;
59
60 desc_cb->priv = priv;
61 desc_cb->length = size;
62 desc_cb->dma = dma;
63 desc_cb->type = type;
64
65 desc->addr = cpu_to_le64(dma);
66 desc->tx.send_size = cpu_to_le16((u16)size);
67
f8a1a636 68 /* config bd buffer end */
13ac695e
S		 69 hnae_set_bit(rrcfv, HNSV2_TXD_VLD_B, 1);
70 hnae_set_field(bn_pid, HNSV2_TXD_BUFNUM_M, 0, buf_num - 1);
71
f8a1a636
SL		 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);
75
13ac695e
S		 76 if (type == DESC_TYPE_SKB) {
77 skb = (struct sk_buff *)priv;
78
79 if (skb->ip_summed == CHECKSUM_PARTIAL) {
80 skb_reset_mac_len(skb);
81 protocol = skb->protocol;
82 ip_offset = ETH_HLEN;
83
84 if (protocol == htons(ETH_P_8021Q)) {
85 ip_offset += VLAN_HLEN;
86 protocol = vlan_get_protocol(skb);
87 skb->protocol = protocol;
88 }
89
90 if (skb->protocol == htons(ETH_P_IP)) {
91 iphdr = ip_hdr(skb);
92 hnae_set_bit(rrcfv, HNSV2_TXD_L3CS_B, 1);
93 hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1);
94
95 /* check for tcp/udp header */
0b51b1dc
DH		 96 if (iphdr->protocol == IPPROTO_TCP &&
97 skb_is_gso(skb)) {
13ac695e
S		 98 hnae_set_bit(tvsvsn,
99 HNSV2_TXD_TSE_B, 1);
13ac695e 100 l4_len = tcp_hdrlen(skb);
0b51b1dc
DH		 101 mss = skb_shinfo(skb)->gso_size;
102 paylen = skb->len - SKB_TMP_LEN(skb);
13ac695e
S		 103 }
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);
108
109 /* check for tcp/udp header */
0b51b1dc
DH		 110 if (ipv6hdr->nexthdr == IPPROTO_TCP &&
111 skb_is_gso(skb) && skb_is_gso_v6(skb)) {
13ac695e
S		 112 hnae_set_bit(tvsvsn,
113 HNSV2_TXD_TSE_B, 1);
13ac695e 114 l4_len = tcp_hdrlen(skb);
0b51b1dc
DH		 115 mss = skb_shinfo(skb)->gso_size;
116 paylen = skb->len - SKB_TMP_LEN(skb);
13ac695e
S		 117 }
118 }
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);
124 }
125 }
126
127 hnae_set_bit(rrcfv, HNSV2_TXD_FE_B, frag_end);
128
129 desc->tx.bn_pid = bn_pid;
130 desc->tx.ra_ri_cs_fe_vld = rrcfv;
131
132 ring_ptr_move_fw(ring, next_to_use);
133}
134
63434888
KY		 135static const struct acpi_device_id hns_enet_acpi_match[] = {
136 { "HISI00C1", 0 },
137 { "HISI00C2", 0 },
138 { },
139};
140MODULE_DEVICE_TABLE(acpi, hns_enet_acpi_match);
141
b5996f11 142static void fill_desc(struct hnae_ring *ring, void *priv,
143 int size, dma_addr_t dma, int frag_end,
13ac695e 144 int buf_num, enum hns_desc_type type, int mtu)
b5996f11 145{
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];
148 struct sk_buff *skb;
149 __be16 protocol;
150 u32 ip_offset;
151 u32 asid_bufnum_pid = 0;
152 u32 flag_ipoffset = 0;
153
154 desc_cb->priv = priv;
155 desc_cb->length = size;
156 desc_cb->dma = dma;
157 desc_cb->type = type;
158
159 desc->addr = cpu_to_le64(dma);
160 desc->tx.send_size = cpu_to_le16((u16)size);
161
162 /*config bd buffer end */
163 flag_ipoffset |= 1 << HNS_TXD_VLD_B;
164
165 asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S;
166
167 if (type == DESC_TYPE_SKB) {
168 skb = (struct sk_buff *)priv;
169
170 if (skb->ip_summed == CHECKSUM_PARTIAL) {
171 protocol = skb->protocol;
172 ip_offset = ETH_HLEN;
173
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;
179 }
180
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;
185
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;
189 }
190
191 flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S;
192 }
193 }
194
195 flag_ipoffset |= frag_end << HNS_TXD_FE_B;
196
197 desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid);
198 desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset);
199
200 ring_ptr_move_fw(ring, next_to_use);
201}
202
203static void unfill_desc(struct hnae_ring *ring)
204{
205 ring_ptr_move_bw(ring, next_to_use);
206}
207
13ac695e
S		 208static int hns_nic_maybe_stop_tx(
209 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
b5996f11 210{
13ac695e
S		 211 struct sk_buff *skb = *out_skb;
212 struct sk_buff *new_skb = NULL;
b5996f11 213 int buf_num;
b5996f11 214
215 /* no. of segments (plus a header) */
216 buf_num = skb_shinfo(skb)->nr_frags + 1;
217
218 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
13ac695e
S		 219 if (ring_space(ring) < 1)
220 return -EBUSY;
b5996f11 221
222 new_skb = skb_copy(skb, GFP_ATOMIC);
13ac695e
S		 223 if (!new_skb)
224 return -ENOMEM;
b5996f11 225
226 dev_kfree_skb_any(skb);
13ac695e 227 *out_skb = new_skb;
b5996f11 228 buf_num = 1;
b5996f11 229 } else if (buf_num > ring_space(ring)) {
13ac695e
S		 230 return -EBUSY;
231 }
232
233 *bnum = buf_num;
234 return 0;
235}
236
64353af6
S		 237static int hns_nic_maybe_stop_tso(
238 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
239{
240 int i;
241 int size;
242 int buf_num;
243 int frag_num;
244 struct sk_buff *skb = *out_skb;
245 struct sk_buff *new_skb = NULL;
246 struct skb_frag_struct *frag;
247
248 size = skb_headlen(skb);
249 buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
250
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;
256 }
257
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)
261 return -EBUSY;
262 /* manual split the send packet */
263 new_skb = skb_copy(skb, GFP_ATOMIC);
264 if (!new_skb)
265 return -ENOMEM;
266 dev_kfree_skb_any(skb);
267 *out_skb = new_skb;
268
269 } else if (ring_space(ring) < buf_num) {
270 return -EBUSY;
271 }
272
273 *bnum = buf_num;
274 return 0;
275}
276
277static 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)
280{
281 int frag_buf_num;
282 int sizeoflast;
283 int k;
284
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;
288
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,
296 buf_num,
297 (type == DESC_TYPE_SKB && !k) ?
298 DESC_TYPE_SKB : DESC_TYPE_PAGE,
299 mtu);
300}
301
13ac695e
S		 302int hns_nic_net_xmit_hw(struct net_device *ndev,
303 struct sk_buff *skb,
304 struct hns_nic_ring_data *ring_data)
305{
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;
311 int buf_num;
312 int seg_num;
313 dma_addr_t dma;
314 int size, next_to_use;
315 int i;
316
317 switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) {
318 case -EBUSY:
b5996f11 319 ring->stats.tx_busy++;
320 goto out_net_tx_busy;
13ac695e
S		 321 case -ENOMEM:
322 ring->stats.sw_err_cnt++;
323 netdev_err(ndev, "no memory to xmit!\n");
324 goto out_err_tx_ok;
325 default:
326 break;
b5996f11 327 }
13ac695e
S		 328
329 /* no. of segments (plus a header) */
330 seg_num = skb_shinfo(skb)->nr_frags + 1;
b5996f11 331 next_to_use = ring->next_to_use;
332
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++;
339 goto out_err_tx_ok;
340 }
13ac695e
S		 341 priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0,
342 buf_num, DESC_TYPE_SKB, ndev->mtu);
b5996f11 343
344 /* fill the fragments */
13ac695e 345 for (i = 1; i < seg_num; i++) {
b5996f11 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;
353 }
13ac695e
S		 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);
b5996f11 357 }
358
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);
362
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;
368
369 return NETDEV_TX_OK;
370
371out_map_frag_fail:
372
13ac695e 373 while (ring->next_to_use != next_to_use) {
b5996f11 374 unfill_desc(ring);
13ac695e
S		 375 if (ring->next_to_use != next_to_use)
376 dma_unmap_page(dev,
377 ring->desc_cb[ring->next_to_use].dma,
378 ring->desc_cb[ring->next_to_use].length,
379 DMA_TO_DEVICE);
380 else
381 dma_unmap_single(dev,
382 ring->desc_cb[next_to_use].dma,
383 ring->desc_cb[next_to_use].length,
384 DMA_TO_DEVICE);
b5996f11 385 }
386
b5996f11 387out_err_tx_ok:
388
389 dev_kfree_skb_any(skb);
390 return NETDEV_TX_OK;
391
392out_net_tx_busy:
393
394 netif_stop_subqueue(ndev, skb->queue_mapping);
395
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.
399 */
400 smp_mb();
401 return NETDEV_TX_BUSY;
402}
403
404/**
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
408 *
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.
414 **/
415static unsigned int hns_nic_get_headlen(unsigned char *data, u32 flag,
416 unsigned int max_size)
417{
418 unsigned char *network;
419 u8 hlen;
420
421 /* this should never happen, but better safe than sorry */
422 if (max_size < ETH_HLEN)
423 return max_size;
424
425 /* initialize network frame pointer */
426 network = data;
427
428 /* set first protocol and move network header forward */
429 network += ETH_HLEN;
430
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))
435 return max_size;
436
437 network += VLAN_HLEN;
438 }
439
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)))
445 return max_size;
446
447 /* access ihl as a u8 to avoid unaligned access on ia64 */
448 hlen = (network[0] & 0x0F) << 2;
449
450 /* verify hlen meets minimum size requirements */
451 if (hlen < sizeof(struct iphdr))
452 return network - data;
453
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)))
459 return max_size;
460
461 /* record next protocol */
462 hlen = sizeof(struct ipv6hdr);
463 } else {
464 return network - data;
465 }
466
467 /* relocate pointer to start of L4 header */
468 network += hlen;
469
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)))
475 return max_size;
476
477 /* access doff as a u8 to avoid unaligned access on ia64 */
478 hlen = (network[12] & 0xF0) >> 2;
479
480 /* verify hlen meets minimum size requirements */
481 if (hlen < sizeof(struct tcphdr))
482 return network - data;
483
484 network += hlen;
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)))
489 return max_size;
490
491 network += sizeof(struct udphdr);
492 }
493
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
497 * header.
498 */
499 if ((typeof(max_size))(network - data) < max_size)
500 return network - data;
501 else
502 return max_size;
503}
504
9cbe9fd5 505static 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)
b5996f11 508{
9cbe9fd5 509 struct hnae_desc *desc;
510 int truesize, size;
511 int last_offset;
be78a690
AB		 512 bool twobufs;
513
514 twobufs = ((PAGE_SIZE < 8192) && hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048);
9cbe9fd5 515
516 desc = &ring->desc[ring->next_to_clean];
517 size = le16_to_cpu(desc->rx.size);
518
be78a690 519 if (twobufs) {
9cbe9fd5 520 truesize = hnae_buf_size(ring);
521 } else {
522 truesize = ALIGN(size, L1_CACHE_BYTES);
523 last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
524 }
525
9cbe9fd5 526 skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len,
527 size - pull_len, truesize - pull_len);
528
b5996f11 529 /* avoid re-using remote pages,flag default unreuse */
be78a690
AB		 530 if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id()))
531 return;
532
533 if (twobufs) {
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;
b5996f11 538
b5996f11 539 desc_cb->reuse_flag = 1;
540 /* bump ref count on page before it is given*/
541 get_page(desc_cb->priv);
542 }
be78a690
AB		 543 return;
544 }
545
546 /* move offset up to the next cache line */
547 desc_cb->page_offset += truesize;
548
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);
b5996f11 553 }
554}
555
13ac695e
S		 556static void get_v2rx_desc_bnum(u32 bnum_flag, int *out_bnum)
557{
558 *out_bnum = hnae_get_field(bnum_flag,
559 HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S) + 1;
560}
561
562static void get_rx_desc_bnum(u32 bnum_flag, int *out_bnum)
563{
564 *out_bnum = hnae_get_field(bnum_flag,
565 HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S);
566}
567
b5996f11 568static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data,
569 struct sk_buff **out_skb, int *out_bnum)
570{
571 struct hnae_ring *ring = ring_data->ring;
572 struct net_device *ndev = ring_data->napi.dev;
13ac695e 573 struct hns_nic_priv *priv = netdev_priv(ndev);
b5996f11 574 struct sk_buff *skb;
575 struct hnae_desc *desc;
576 struct hnae_desc_cb *desc_cb;
0d6b425a 577 struct ethhdr *eh;
b5996f11 578 unsigned char *va;
9cbe9fd5 579 int bnum, length, i;
b5996f11 580 int pull_len;
581 u32 bnum_flag;
582
b5996f11 583 desc = &ring->desc[ring->next_to_clean];
584 desc_cb = &ring->desc_cb[ring->next_to_clean];
13ac695e
S		 585
586 prefetch(desc);
587
b5996f11 588 va = (unsigned char *)desc_cb->buf + desc_cb->page_offset;
589
13ac695e
S		 590 /* prefetch first cache line of first page */
591 prefetch(va);
592#if L1_CACHE_BYTES < 128
593 prefetch(va + L1_CACHE_BYTES);
594#endif
595
596 skb = *out_skb = napi_alloc_skb(&ring_data->napi,
597 HNS_RX_HEAD_SIZE);
b5996f11 598 if (unlikely(!skb)) {
599 netdev_err(ndev, "alloc rx skb fail\n");
600 ring->stats.sw_err_cnt++;
601 return -ENOMEM;
602 }
8379f0a8 603 skb_reset_mac_header(skb);
b5996f11 604
9cbe9fd5 605 prefetchw(skb->data);
13ac695e
S		 606 length = le16_to_cpu(desc->rx.pkt_len);
607 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
608 priv->ops.get_rxd_bnum(bnum_flag, &bnum);
609 *out_bnum = bnum;
610
b5996f11 611 if (length <= HNS_RX_HEAD_SIZE) {
612 memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
613
614 /* we can reuse buffer as-is, just make sure it is local */
615 if (likely(page_to_nid(desc_cb->priv) == numa_node_id()))
616 desc_cb->reuse_flag = 1;
617 else /* this page cannot be reused so discard it */
618 put_page(desc_cb->priv);
619
620 ring_ptr_move_fw(ring, next_to_clean);
621
622 if (unlikely(bnum != 1)) { /* check err*/
623 *out_bnum = 1;
624 goto out_bnum_err;
625 }
626 } else {
627 ring->stats.seg_pkt_cnt++;
628
629 pull_len = hns_nic_get_headlen(va, bnum_flag, HNS_RX_HEAD_SIZE);
630 memcpy(__skb_put(skb, pull_len), va,
631 ALIGN(pull_len, sizeof(long)));
632
9cbe9fd5 633 hns_nic_reuse_page(skb, 0, ring, pull_len, desc_cb);
b5996f11 634 ring_ptr_move_fw(ring, next_to_clean);
635
636 if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/
637 *out_bnum = 1;
638 goto out_bnum_err;
639 }
640 for (i = 1; i < bnum; i++) {
641 desc = &ring->desc[ring->next_to_clean];
642 desc_cb = &ring->desc_cb[ring->next_to_clean];
b5996f11 643
9cbe9fd5 644 hns_nic_reuse_page(skb, i, ring, 0, desc_cb);
b5996f11 645 ring_ptr_move_fw(ring, next_to_clean);
646 }
647 }
648
649 /* check except process, free skb and jump the desc */
650 if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) {
651out_bnum_err:
652 *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/
653 netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n",
654 bnum, ring->max_desc_num_per_pkt,
655 length, (int)MAX_SKB_FRAGS,
656 ((u64 *)desc)[0], ((u64 *)desc)[1]);
657 ring->stats.err_bd_num++;
658 dev_kfree_skb_any(skb);
659 return -EDOM;
660 }
661
662 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
663
664 if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) {
665 netdev_err(ndev, "no valid bd,%016llx,%016llx\n",
666 ((u64 *)desc)[0], ((u64 *)desc)[1]);
667 ring->stats.non_vld_descs++;
668 dev_kfree_skb_any(skb);
669 return -EINVAL;
670 }
671
672 if (unlikely((!desc->rx.pkt_len) ||
673 hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) {
b5996f11 674 ring->stats.err_pkt_len++;
675 dev_kfree_skb_any(skb);
676 return -EFAULT;
677 }
678
679 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) {
b5996f11 680 ring->stats.l2_err++;
681 dev_kfree_skb_any(skb);
682 return -EFAULT;
683 }
684
0d6b425a
KY		 685 /* filter out multicast pkt with the same src mac as this port */
686 eh = eth_hdr(skb);
687 if (unlikely(is_multicast_ether_addr(eh->h_dest) &&
688 ether_addr_equal(ndev->dev_addr, eh->h_source))) {
689 dev_kfree_skb_any(skb);
690 return -EFAULT;
691 }
692
b5996f11 693 ring->stats.rx_pkts++;
694 ring->stats.rx_bytes += skb->len;
695
696 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L3E_B) ||
697 hnae_get_bit(bnum_flag, HNS_RXD_L4E_B))) {
b5996f11 698 ring->stats.l3l4_csum_err++;
699 return 0;
700 }
701
702 skb->ip_summed = CHECKSUM_UNNECESSARY;
703
704 return 0;
705}
706
707static void
708hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count)
709{
710 int i, ret;
711 struct hnae_desc_cb res_cbs;
712 struct hnae_desc_cb *desc_cb;
713 struct hnae_ring *ring = ring_data->ring;
714 struct net_device *ndev = ring_data->napi.dev;
715
716 for (i = 0; i < cleand_count; i++) {
717 desc_cb = &ring->desc_cb[ring->next_to_use];
718 if (desc_cb->reuse_flag) {
719 ring->stats.reuse_pg_cnt++;
720 hnae_reuse_buffer(ring, ring->next_to_use);
721 } else {
722 ret = hnae_reserve_buffer_map(ring, &res_cbs);
723 if (ret) {
724 ring->stats.sw_err_cnt++;
725 netdev_err(ndev, "hnae reserve buffer map failed.\n");
726 break;
727 }
728 hnae_replace_buffer(ring, ring->next_to_use, &res_cbs);
729 }
730
731 ring_ptr_move_fw(ring, next_to_use);
732 }
733
734 wmb(); /* make all data has been write before submit */
735 writel_relaxed(i, ring->io_base + RCB_REG_HEAD);
736}
737
738/* return error number for error or number of desc left to take
739 */
740static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data,
741 struct sk_buff *skb)
742{
743 struct net_device *ndev = ring_data->napi.dev;
744
745 skb->protocol = eth_type_trans(skb, ndev);
746 (void)napi_gro_receive(&ring_data->napi, skb);
747 ndev->last_rx = jiffies;
748}
749
0e97cd4e 750static int hns_desc_unused(struct hnae_ring *ring)
751{
752 int ntc = ring->next_to_clean;
753 int ntu = ring->next_to_use;
754
755 return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu;
756}
757
b5996f11 758static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data,
759 int budget, void *v)
760{
761 struct hnae_ring *ring = ring_data->ring;
762 struct sk_buff *skb;
34447271 763 int num, bnum;
b5996f11 764#define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
765 int recv_pkts, recv_bds, clean_count, err;
0e97cd4e 766 int unused_count = hns_desc_unused(ring);
b5996f11 767
768 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
769 rmb(); /* make sure num taken effect before the other data is touched */
770
771 recv_pkts = 0, recv_bds = 0, clean_count = 0;
0e97cd4e 772 num -= unused_count;
34447271 773
b5996f11 774 while (recv_pkts < budget && recv_bds < num) {
6ba312eb 775 /* reuse or realloc buffers */
0e97cd4e 776 if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
777 hns_nic_alloc_rx_buffers(ring_data,
778 clean_count + unused_count);
b5996f11 779 clean_count = 0;
0e97cd4e 780 unused_count = hns_desc_unused(ring);
b5996f11 781 }
782
6ba312eb 783 /* poll one pkt */
b5996f11 784 err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum);
785 if (unlikely(!skb)) /* this fault cannot be repaired */
3a31b64e 786 goto out;
b5996f11 787
788 recv_bds += bnum;
789 clean_count += bnum;
790 if (unlikely(err)) { /* do jump the err */
791 recv_pkts++;
792 continue;
793 }
794
795 /* do update ip stack process*/
796 ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)(
797 ring_data, skb);
798 recv_pkts++;
799 }
800
3a31b64e 801out:
13ac695e 802 /* make all data has been write before submit */
0e97cd4e 803 if (clean_count + unused_count > 0)
804 hns_nic_alloc_rx_buffers(ring_data,
805 clean_count + unused_count);
13ac695e 806
b5996f11 807 return recv_pkts;
808}
809
810static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
811{
812 struct hnae_ring *ring = ring_data->ring;
813 int num = 0;
814
cee5add4
DH		 815 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
816
b5996f11 817 /* for hardware bug fixed */
818 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
819
820 if (num > 0) {
821 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
822 ring_data->ring, 1);
823
824 napi_schedule(&ring_data->napi);
825 }
826}
827
cee5add4
DH		 828static void hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
829{
830 struct hnae_ring *ring = ring_data->ring;
831 int num = 0;
832
833 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
834
835 if (num == 0)
836 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
837 ring, 0);
838 else
839 napi_schedule(&ring_data->napi);
840}
841
b5996f11 842static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring,
843 int *bytes, int *pkts)
844{
845 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
846
847 (*pkts) += (desc_cb->type == DESC_TYPE_SKB);
848 (*bytes) += desc_cb->length;
849 /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
850 hnae_free_buffer_detach(ring, ring->next_to_clean);
851
852 ring_ptr_move_fw(ring, next_to_clean);
853}
854
855static int is_valid_clean_head(struct hnae_ring *ring, int h)
856{
857 int u = ring->next_to_use;
858 int c = ring->next_to_clean;
859
860 if (unlikely(h > ring->desc_num))
861 return 0;
862
863 assert(u > 0 && u < ring->desc_num);
864 assert(c > 0 && c < ring->desc_num);
865 assert(u != c && h != c); /* must be checked before call this func */
866
867 return u > c ? (h > c && h <= u) : (h > c || h <= u);
868}
869
870/* netif_tx_lock will turn down the performance, set only when necessary */
871#ifdef CONFIG_NET_POLL_CONTROLLER
872#define NETIF_TX_LOCK(ndev) netif_tx_lock(ndev)
873#define NETIF_TX_UNLOCK(ndev) netif_tx_unlock(ndev)
874#else
875#define NETIF_TX_LOCK(ndev)
876#define NETIF_TX_UNLOCK(ndev)
877#endif
878/* reclaim all desc in one budget
879 * return error or number of desc left
880 */
881static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
882 int budget, void *v)
883{
884 struct hnae_ring *ring = ring_data->ring;
885 struct net_device *ndev = ring_data->napi.dev;
886 struct netdev_queue *dev_queue;
887 struct hns_nic_priv *priv = netdev_priv(ndev);
888 int head;
889 int bytes, pkts;
890
891 NETIF_TX_LOCK(ndev);
892
893 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
894 rmb(); /* make sure head is ready before touch any data */
895
896 if (is_ring_empty(ring) || head == ring->next_to_clean) {
897 NETIF_TX_UNLOCK(ndev);
898 return 0; /* no data to poll */
899 }
900
901 if (!is_valid_clean_head(ring, head)) {
902 netdev_err(ndev, "wrong head (%d, %d-%d)\n", head,
903 ring->next_to_use, ring->next_to_clean);
904 ring->stats.io_err_cnt++;
905 NETIF_TX_UNLOCK(ndev);
906 return -EIO;
907 }
908
909 bytes = 0;
910 pkts = 0;
9cbe9fd5 911 while (head != ring->next_to_clean) {
b5996f11 912 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
9cbe9fd5 913 /* issue prefetch for next Tx descriptor */
914 prefetch(&ring->desc_cb[ring->next_to_clean]);
915 }
b5996f11 916
917 NETIF_TX_UNLOCK(ndev);
918
919 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
920 netdev_tx_completed_queue(dev_queue, pkts, bytes);
921
13ac695e
S		 922 if (unlikely(priv->link && !netif_carrier_ok(ndev)))
923 netif_carrier_on(ndev);
924
b5996f11 925 if (unlikely(pkts && netif_carrier_ok(ndev) &&
926 (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) {
927 /* Make sure that anybody stopping the queue after this
928 * sees the new next_to_clean.
929 */
930 smp_mb();
931 if (netif_tx_queue_stopped(dev_queue) &&
932 !test_bit(NIC_STATE_DOWN, &priv->state)) {
933 netif_tx_wake_queue(dev_queue);
934 ring->stats.restart_queue++;
935 }
936 }
937 return 0;
938}
939
940static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
941{
942 struct hnae_ring *ring = ring_data->ring;
cee5add4
DH		 943 int head;
944
945 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
946
947 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
b5996f11 948
949 if (head != ring->next_to_clean) {
950 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
951 ring_data->ring, 1);
952
953 napi_schedule(&ring_data->napi);
954 }
955}
956
cee5add4
DH		 957static void hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
958{
959 struct hnae_ring *ring = ring_data->ring;
960 int head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
961
962 if (head == ring->next_to_clean)
963 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
964 ring, 0);
965 else
966 napi_schedule(&ring_data->napi);
967}
968
b5996f11 969static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
970{
971 struct hnae_ring *ring = ring_data->ring;
972 struct net_device *ndev = ring_data->napi.dev;
973 struct netdev_queue *dev_queue;
974 int head;
975 int bytes, pkts;
976
977 NETIF_TX_LOCK(ndev);
978
979 head = ring->next_to_use; /* ntu :soft setted ring position*/
980 bytes = 0;
981 pkts = 0;
982 while (head != ring->next_to_clean)
983 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
984
985 NETIF_TX_UNLOCK(ndev);
986
987 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
988 netdev_tx_reset_queue(dev_queue);
989}
990
991static int hns_nic_common_poll(struct napi_struct *napi, int budget)
992{
993 struct hns_nic_ring_data *ring_data =
994 container_of(napi, struct hns_nic_ring_data, napi);
995 int clean_complete = ring_data->poll_one(
996 ring_data, budget, ring_data->ex_process);
997
998 if (clean_complete >= 0 && clean_complete < budget) {
999 napi_complete(napi);
cee5add4 1000 ring_data->fini_process(ring_data);
9cbe9fd5 1001 return 0;
b5996f11 1002 }
1003
1004 return clean_complete;
1005}
1006
1007static irqreturn_t hns_irq_handle(int irq, void *dev)
1008{
1009 struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev;
1010
1011 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
1012 ring_data->ring, 1);
1013 napi_schedule(&ring_data->napi);
1014
1015 return IRQ_HANDLED;
1016}
1017
1018/**
1019 *hns_nic_adjust_link - adjust net work mode by the phy stat or new param
1020 *@ndev: net device
1021 */
1022static void hns_nic_adjust_link(struct net_device *ndev)
1023{
1024 struct hns_nic_priv *priv = netdev_priv(ndev);
1025 struct hnae_handle *h = priv->ae_handle;
bb7189dc
QX		 1026 int state = 1;
1027
1028 if (priv->phy) {
1029 h->dev->ops->adjust_link(h, ndev->phydev->speed,
1030 ndev->phydev->duplex);
1031 state = priv->phy->link;
1032 }
1033 state = state && h->dev->ops->get_status(h);
b5996f11 1034
bb7189dc
QX		 1035 if (state != priv->link) {
1036 if (state) {
1037 netif_carrier_on(ndev);
1038 netif_tx_wake_all_queues(ndev);
1039 netdev_info(ndev, "link up\n");
1040 } else {
1041 netif_carrier_off(ndev);
1042 netdev_info(ndev, "link down\n");
1043 }
1044 priv->link = state;
1045 }
b5996f11 1046}
1047
1048/**
1049 *hns_nic_init_phy - init phy
1050 *@ndev: net device
1051 *@h: ae handle
1052 * Return 0 on success, negative on failure
1053 */
1054int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h)
1055{
1056 struct hns_nic_priv *priv = netdev_priv(ndev);
652d39b0
KY		 1057 struct phy_device *phy_dev = h->phy_dev;
1058 int ret;
b5996f11 1059
652d39b0 1060 if (!h->phy_dev)
b5996f11 1061 return 0;
1062
652d39b0
KY		 1063 if (h->phy_if != PHY_INTERFACE_MODE_XGMII) {
1064 phy_dev->dev_flags = 0;
b5996f11 1065
652d39b0
KY		 1066 ret = phy_connect_direct(ndev, phy_dev, hns_nic_adjust_link,
1067 h->phy_if);
1068 } else {
1069 ret = phy_attach_direct(ndev, phy_dev, 0, h->phy_if);
1070 }
1071 if (unlikely(ret))
1072 return -ENODEV;
b5996f11 1073
1074 phy_dev->supported &= h->if_support;
1075 phy_dev->advertising = phy_dev->supported;
1076
1077 if (h->phy_if == PHY_INTERFACE_MODE_XGMII)
1078 phy_dev->autoneg = false;
1079
1080 priv->phy = phy_dev;
1081
1082 return 0;
1083}
1084
1085static int hns_nic_ring_open(struct net_device *netdev, int idx)
1086{
1087 struct hns_nic_priv *priv = netdev_priv(netdev);
1088 struct hnae_handle *h = priv->ae_handle;
1089
1090 napi_enable(&priv->ring_data[idx].napi);
1091
1092 enable_irq(priv->ring_data[idx].ring->irq);
1093 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0);
1094
1095 return 0;
1096}
1097
1098static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p)
1099{
1100 struct hns_nic_priv *priv = netdev_priv(ndev);
1101 struct hnae_handle *h = priv->ae_handle;
1102 struct sockaddr *mac_addr = p;
1103 int ret;
1104
1105 if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
1106 return -EADDRNOTAVAIL;
1107
1108 ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data);
1109 if (ret) {
1110 netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret);
1111 return ret;
1112 }
1113
1114 memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len);
1115
1116 return 0;
1117}
1118
1119void hns_nic_update_stats(struct net_device *netdev)
1120{
1121 struct hns_nic_priv *priv = netdev_priv(netdev);
1122 struct hnae_handle *h = priv->ae_handle;
1123
1124 h->dev->ops->update_stats(h, &netdev->stats);
1125}
1126
1127/* set mac addr if it is configed. or leave it to the AE driver */
1128static void hns_init_mac_addr(struct net_device *ndev)
1129{
1130 struct hns_nic_priv *priv = netdev_priv(ndev);
b5996f11 1131
6162928c 1132 if (!device_get_mac_address(priv->dev, ndev->dev_addr, ETH_ALEN)) {
b5996f11 1133 eth_hw_addr_random(ndev);
1134 dev_warn(priv->dev, "No valid mac, use random mac %pM",
1135 ndev->dev_addr);
1136 }
1137}
1138
1139static void hns_nic_ring_close(struct net_device *netdev, int idx)
1140{
1141 struct hns_nic_priv *priv = netdev_priv(netdev);
1142 struct hnae_handle *h = priv->ae_handle;
1143
1144 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1);
1145 disable_irq(priv->ring_data[idx].ring->irq);
1146
1147 napi_disable(&priv->ring_data[idx].napi);
1148}
1149
13ac695e 1150static void hns_set_irq_affinity(struct hns_nic_priv *priv)
b5996f11 1151{
1152 struct hnae_handle *h = priv->ae_handle;
1153 struct hns_nic_ring_data *rd;
1154 int i;
b5996f11 1155 int cpu;
1156 cpumask_t mask;
1157
13ac695e
S		 1158 /*diffrent irq banlance for 16core and 32core*/
1159 if (h->q_num == num_possible_cpus()) {
1160 for (i = 0; i < h->q_num * 2; i++) {
1161 rd = &priv->ring_data[i];
1162 if (cpu_online(rd->queue_index)) {
1163 cpumask_clear(&mask);
1164 cpu = rd->queue_index;
1165 cpumask_set_cpu(cpu, &mask);
1166 (void)irq_set_affinity_hint(rd->ring->irq,
1167 &mask);
1168 }
1169 }
1170 } else {
1171 for (i = 0; i < h->q_num; i++) {
1172 rd = &priv->ring_data[i];
1173 if (cpu_online(rd->queue_index * 2)) {
1174 cpumask_clear(&mask);
1175 cpu = rd->queue_index * 2;
1176 cpumask_set_cpu(cpu, &mask);
1177 (void)irq_set_affinity_hint(rd->ring->irq,
1178 &mask);
1179 }
1180 }
1181
1182 for (i = h->q_num; i < h->q_num * 2; i++) {
1183 rd = &priv->ring_data[i];
1184 if (cpu_online(rd->queue_index * 2 + 1)) {
1185 cpumask_clear(&mask);
1186 cpu = rd->queue_index * 2 + 1;
1187 cpumask_set_cpu(cpu, &mask);
1188 (void)irq_set_affinity_hint(rd->ring->irq,
1189 &mask);
1190 }
1191 }
1192 }
1193}
1194
1195static int hns_nic_init_irq(struct hns_nic_priv *priv)
1196{
1197 struct hnae_handle *h = priv->ae_handle;
1198 struct hns_nic_ring_data *rd;
1199 int i;
1200 int ret;
1201
b5996f11 1202 for (i = 0; i < h->q_num * 2; i++) {
1203 rd = &priv->ring_data[i];
1204
1205 if (rd->ring->irq_init_flag == RCB_IRQ_INITED)
1206 break;
1207
1208 snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN,
1209 "%s-%s%d", priv->netdev->name,
1210 (i < h->q_num ? "tx" : "rx"), rd->queue_index);
1211
1212 rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0';
1213
1214 ret = request_irq(rd->ring->irq,
1215 hns_irq_handle, 0, rd->ring->ring_name, rd);
1216 if (ret) {
1217 netdev_err(priv->netdev, "request irq(%d) fail\n",
1218 rd->ring->irq);
1219 return ret;
1220 }
1221 disable_irq(rd->ring->irq);
1222 rd->ring->irq_init_flag = RCB_IRQ_INITED;
b5996f11 1223 }
1224
13ac695e
S		 1225 /*set cpu affinity*/
1226 hns_set_irq_affinity(priv);
1227
b5996f11 1228 return 0;
1229}
1230
1231static int hns_nic_net_up(struct net_device *ndev)
1232{
1233 struct hns_nic_priv *priv = netdev_priv(ndev);
1234 struct hnae_handle *h = priv->ae_handle;
454784d8 1235 int i, j;
b5996f11 1236 int ret;
1237
1238 ret = hns_nic_init_irq(priv);
1239 if (ret != 0) {
1240 netdev_err(ndev, "hns init irq failed! ret=%d\n", ret);
1241 return ret;
1242 }
1243
1244 for (i = 0; i < h->q_num * 2; i++) {
1245 ret = hns_nic_ring_open(ndev, i);
1246 if (ret)
1247 goto out_has_some_queues;
1248 }
1249
b5996f11 1250 ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr);
1251 if (ret)
1252 goto out_set_mac_addr_err;
1253
1254 ret = h->dev->ops->start ? h->dev->ops->start(h) : 0;
1255 if (ret)
1256 goto out_start_err;
1257
1258 if (priv->phy)
1259 phy_start(priv->phy);
1260
1261 clear_bit(NIC_STATE_DOWN, &priv->state);
1262 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
1263
1264 return 0;
1265
1266out_start_err:
1267 netif_stop_queue(ndev);
1268out_set_mac_addr_err:
b5996f11 1269out_has_some_queues:
1270 for (j = i - 1; j >= 0; j--)
1271 hns_nic_ring_close(ndev, j);
1272
1273 set_bit(NIC_STATE_DOWN, &priv->state);
1274
1275 return ret;
1276}
1277
1278static void hns_nic_net_down(struct net_device *ndev)
1279{
1280 int i;
1281 struct hnae_ae_ops *ops;
1282 struct hns_nic_priv *priv = netdev_priv(ndev);
1283
1284 if (test_and_set_bit(NIC_STATE_DOWN, &priv->state))
1285 return;
1286
1287 (void)del_timer_sync(&priv->service_timer);
1288 netif_tx_stop_all_queues(ndev);
1289 netif_carrier_off(ndev);
1290 netif_tx_disable(ndev);
1291 priv->link = 0;
1292
1293 if (priv->phy)
1294 phy_stop(priv->phy);
1295
1296 ops = priv->ae_handle->dev->ops;
1297
1298 if (ops->stop)
1299 ops->stop(priv->ae_handle);
1300
1301 netif_tx_stop_all_queues(ndev);
1302
1303 for (i = priv->ae_handle->q_num - 1; i >= 0; i--) {
1304 hns_nic_ring_close(ndev, i);
1305 hns_nic_ring_close(ndev, i + priv->ae_handle->q_num);
1306
1307 /* clean tx buffers*/
1308 hns_nic_tx_clr_all_bufs(priv->ring_data + i);
1309 }
1310}
1311
1312void hns_nic_net_reset(struct net_device *ndev)
1313{
1314 struct hns_nic_priv *priv = netdev_priv(ndev);
1315 struct hnae_handle *handle = priv->ae_handle;
1316
1317 while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state))
1318 usleep_range(1000, 2000);
1319
1320 (void)hnae_reinit_handle(handle);
1321
1322 clear_bit(NIC_STATE_RESETTING, &priv->state);
1323}
1324
1325void hns_nic_net_reinit(struct net_device *netdev)
1326{
1327 struct hns_nic_priv *priv = netdev_priv(netdev);
1328
860e9538 1329 netif_trans_update(priv->netdev);
b5996f11 1330 while (test_and_set_bit(NIC_STATE_REINITING, &priv->state))
1331 usleep_range(1000, 2000);
1332
1333 hns_nic_net_down(netdev);
1334 hns_nic_net_reset(netdev);
1335 (void)hns_nic_net_up(netdev);
1336 clear_bit(NIC_STATE_REINITING, &priv->state);
1337}
1338
1339static int hns_nic_net_open(struct net_device *ndev)
1340{
1341 struct hns_nic_priv *priv = netdev_priv(ndev);
1342 struct hnae_handle *h = priv->ae_handle;
1343 int ret;
1344
1345 if (test_bit(NIC_STATE_TESTING, &priv->state))
1346 return -EBUSY;
1347
1348 priv->link = 0;
1349 netif_carrier_off(ndev);
1350
1351 ret = netif_set_real_num_tx_queues(ndev, h->q_num);
1352 if (ret < 0) {
1353 netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n",
1354 ret);
1355 return ret;
1356 }
1357
1358 ret = netif_set_real_num_rx_queues(ndev, h->q_num);
1359 if (ret < 0) {
1360 netdev_err(ndev,
1361 "netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
1362 return ret;
1363 }
1364
1365 ret = hns_nic_net_up(ndev);
1366 if (ret) {
1367 netdev_err(ndev,
1368 "hns net up fail, ret=%d!\n", ret);
1369 return ret;
1370 }
1371
1372 return 0;
1373}
1374
1375static int hns_nic_net_stop(struct net_device *ndev)
1376{
1377 hns_nic_net_down(ndev);
1378
1379 return 0;
1380}
1381
1382static void hns_tx_timeout_reset(struct hns_nic_priv *priv);
1383static void hns_nic_net_timeout(struct net_device *ndev)
1384{
1385 struct hns_nic_priv *priv = netdev_priv(ndev);
1386
1387 hns_tx_timeout_reset(priv);
1388}
1389
1390static int hns_nic_do_ioctl(struct net_device *netdev, struct ifreq *ifr,
1391 int cmd)
1392{
1393 struct hns_nic_priv *priv = netdev_priv(netdev);
1394 struct phy_device *phy_dev = priv->phy;
1395
1396 if (!netif_running(netdev))
1397 return -EINVAL;
1398
1399 if (!phy_dev)
1400 return -ENOTSUPP;
1401
1402 return phy_mii_ioctl(phy_dev, ifr, cmd);
1403}
1404
1405/* use only for netconsole to poll with the device without interrupt */
1406#ifdef CONFIG_NET_POLL_CONTROLLER
1407void hns_nic_poll_controller(struct net_device *ndev)
1408{
1409 struct hns_nic_priv *priv = netdev_priv(ndev);
1410 unsigned long flags;
1411 int i;
1412
1413 local_irq_save(flags);
1414 for (i = 0; i < priv->ae_handle->q_num * 2; i++)
1415 napi_schedule(&priv->ring_data[i].napi);
1416 local_irq_restore(flags);
1417}
1418#endif
1419
1420static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb,
1421 struct net_device *ndev)
1422{
1423 struct hns_nic_priv *priv = netdev_priv(ndev);
1424 int ret;
1425
1426 assert(skb->queue_mapping < ndev->ae_handle->q_num);
1427 ret = hns_nic_net_xmit_hw(ndev, skb,
1428 &tx_ring_data(priv, skb->queue_mapping));
1429 if (ret == NETDEV_TX_OK) {
860e9538 1430 netif_trans_update(ndev);
b5996f11 1431 ndev->stats.tx_bytes += skb->len;
1432 ndev->stats.tx_packets++;
1433 }
1434 return (netdev_tx_t)ret;
1435}
1436
1437static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu)
1438{
1439 struct hns_nic_priv *priv = netdev_priv(ndev);
1440 struct hnae_handle *h = priv->ae_handle;
1441 int ret;
1442
1443 /* MTU < 68 is an error and causes problems on some kernels */
1444 if (new_mtu < 68)
1445 return -EINVAL;
1446
1447 if (!h->dev->ops->set_mtu)
1448 return -ENOTSUPP;
1449
1450 if (netif_running(ndev)) {
1451 (void)hns_nic_net_stop(ndev);
1452 msleep(100);
1453
1454 ret = h->dev->ops->set_mtu(h, new_mtu);
1455 if (ret)
1456 netdev_err(ndev, "set mtu fail, return value %d\n",
1457 ret);
1458
1459 if (hns_nic_net_open(ndev))
1460 netdev_err(ndev, "hns net open fail\n");
1461 } else {
1462 ret = h->dev->ops->set_mtu(h, new_mtu);
1463 }
1464
1465 if (!ret)
1466 ndev->mtu = new_mtu;
1467
1468 return ret;
1469}
1470
38f616da
S		 1471static int hns_nic_set_features(struct net_device *netdev,
1472 netdev_features_t features)
1473{
1474 struct hns_nic_priv *priv = netdev_priv(netdev);
38f616da
S		 1475
1476 switch (priv->enet_ver) {
1477 case AE_VERSION_1:
1478 if (features & (NETIF_F_TSO | NETIF_F_TSO6))
1479 netdev_info(netdev, "enet v1 do not support tso!\n");
1480 break;
1481 default:
1482 if (features & (NETIF_F_TSO | NETIF_F_TSO6)) {
1483 priv->ops.fill_desc = fill_tso_desc;
1484 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
1485 /* The chip only support 7*4096 */
1486 netif_set_gso_max_size(netdev, 7 * 4096);
38f616da
S		 1487 } else {
1488 priv->ops.fill_desc = fill_v2_desc;
1489 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
38f616da
S		 1490 }
1491 break;
1492 }
1493 netdev->features = features;
1494 return 0;
1495}
1496
1497static netdev_features_t hns_nic_fix_features(
1498 struct net_device *netdev, netdev_features_t features)
1499{
1500 struct hns_nic_priv *priv = netdev_priv(netdev);
1501
1502 switch (priv->enet_ver) {
1503 case AE_VERSION_1:
1504 features &= ~(NETIF_F_TSO | NETIF_F_TSO6 |
1505 NETIF_F_HW_VLAN_CTAG_FILTER);
1506 break;
1507 default:
1508 break;
1509 }
1510 return features;
1511}
1512
b5996f11 1513/**
1514 * nic_set_multicast_list - set mutl mac address
1515 * @netdev: net device
1516 * @p: mac address
1517 *
1518 * return void
1519 */
1520void hns_set_multicast_list(struct net_device *ndev)
1521{
1522 struct hns_nic_priv *priv = netdev_priv(ndev);
1523 struct hnae_handle *h = priv->ae_handle;
1524 struct netdev_hw_addr *ha = NULL;
1525
1526 if (!h) {
1527 netdev_err(ndev, "hnae handle is null\n");
1528 return;
1529 }
1530
1531 if (h->dev->ops->set_mc_addr) {
1532 netdev_for_each_mc_addr(ha, ndev)
1533 if (h->dev->ops->set_mc_addr(h, ha->addr))
1534 netdev_err(ndev, "set multicast fail\n");
1535 }
1536}
1537
4568637f 1538void hns_nic_set_rx_mode(struct net_device *ndev)
1539{
1540 struct hns_nic_priv *priv = netdev_priv(ndev);
1541 struct hnae_handle *h = priv->ae_handle;
1542
1543 if (h->dev->ops->set_promisc_mode) {
1544 if (ndev->flags & IFF_PROMISC)
1545 h->dev->ops->set_promisc_mode(h, 1);
1546 else
1547 h->dev->ops->set_promisc_mode(h, 0);
1548 }
1549
1550 hns_set_multicast_list(ndev);
1551}
1552
b5996f11 1553struct rtnl_link_stats64 *hns_nic_get_stats64(struct net_device *ndev,
1554 struct rtnl_link_stats64 *stats)
1555{
1556 int idx = 0;
1557 u64 tx_bytes = 0;
1558 u64 rx_bytes = 0;
1559 u64 tx_pkts = 0;
1560 u64 rx_pkts = 0;
1561 struct hns_nic_priv *priv = netdev_priv(ndev);
1562 struct hnae_handle *h = priv->ae_handle;
1563
1564 for (idx = 0; idx < h->q_num; idx++) {
1565 tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes;
1566 tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts;
1567 rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes;
1568 rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts;
1569 }
1570
1571 stats->tx_bytes = tx_bytes;
1572 stats->tx_packets = tx_pkts;
1573 stats->rx_bytes = rx_bytes;
1574 stats->rx_packets = rx_pkts;
1575
1576 stats->rx_errors = ndev->stats.rx_errors;
1577 stats->multicast = ndev->stats.multicast;
1578 stats->rx_length_errors = ndev->stats.rx_length_errors;
1579 stats->rx_crc_errors = ndev->stats.rx_crc_errors;
1580 stats->rx_missed_errors = ndev->stats.rx_missed_errors;
1581
1582 stats->tx_errors = ndev->stats.tx_errors;
1583 stats->rx_dropped = ndev->stats.rx_dropped;
1584 stats->tx_dropped = ndev->stats.tx_dropped;
1585 stats->collisions = ndev->stats.collisions;
1586 stats->rx_over_errors = ndev->stats.rx_over_errors;
1587 stats->rx_frame_errors = ndev->stats.rx_frame_errors;
1588 stats->rx_fifo_errors = ndev->stats.rx_fifo_errors;
1589 stats->tx_aborted_errors = ndev->stats.tx_aborted_errors;
1590 stats->tx_carrier_errors = ndev->stats.tx_carrier_errors;
1591 stats->tx_fifo_errors = ndev->stats.tx_fifo_errors;
1592 stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors;
1593 stats->tx_window_errors = ndev->stats.tx_window_errors;
1594 stats->rx_compressed = ndev->stats.rx_compressed;
1595 stats->tx_compressed = ndev->stats.tx_compressed;
1596
1597 return stats;
1598}
1599
1600static const struct net_device_ops hns_nic_netdev_ops = {
1601 .ndo_open = hns_nic_net_open,
1602 .ndo_stop = hns_nic_net_stop,
1603 .ndo_start_xmit = hns_nic_net_xmit,
1604 .ndo_tx_timeout = hns_nic_net_timeout,
1605 .ndo_set_mac_address = hns_nic_net_set_mac_address,
1606 .ndo_change_mtu = hns_nic_change_mtu,
1607 .ndo_do_ioctl = hns_nic_do_ioctl,
38f616da
S		 1608 .ndo_set_features = hns_nic_set_features,
1609 .ndo_fix_features = hns_nic_fix_features,
b5996f11 1610 .ndo_get_stats64 = hns_nic_get_stats64,
1611#ifdef CONFIG_NET_POLL_CONTROLLER
1612 .ndo_poll_controller = hns_nic_poll_controller,
1613#endif
4568637f 1614 .ndo_set_rx_mode = hns_nic_set_rx_mode,
b5996f11 1615};
1616
1617static void hns_nic_update_link_status(struct net_device *netdev)
1618{
1619 struct hns_nic_priv *priv = netdev_priv(netdev);
1620
1621 struct hnae_handle *h = priv->ae_handle;
b5996f11 1622
bb7189dc
QX		 1623 if (h->phy_dev) {
1624 if (h->phy_if != PHY_INTERFACE_MODE_XGMII)
1625 return;
b5996f11 1626
bb7189dc 1627 (void)genphy_read_status(h->phy_dev);
b5996f11 1628 }
bb7189dc 1629 hns_nic_adjust_link(netdev);
b5996f11 1630}
1631
1632/* for dumping key regs*/
1633static void hns_nic_dump(struct hns_nic_priv *priv)
1634{
1635 struct hnae_handle *h = priv->ae_handle;
1636 struct hnae_ae_ops *ops = h->dev->ops;
1637 u32 *data, reg_num, i;
1638
1639 if (ops->get_regs_len && ops->get_regs) {
1640 reg_num = ops->get_regs_len(priv->ae_handle);
1641 reg_num = (reg_num + 3ul) & ~3ul;
1642 data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL);
1643 if (data) {
1644 ops->get_regs(priv->ae_handle, data);
1645 for (i = 0; i < reg_num; i += 4)
1646 pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
1647 i, data[i], data[i + 1],
1648 data[i + 2], data[i + 3]);
1649 kfree(data);
1650 }
1651 }
1652
1653 for (i = 0; i < h->q_num; i++) {
1654 pr_info("tx_queue%d_next_to_clean:%d\n",
1655 i, h->qs[i]->tx_ring.next_to_clean);
1656 pr_info("tx_queue%d_next_to_use:%d\n",
1657 i, h->qs[i]->tx_ring.next_to_use);
1658 pr_info("rx_queue%d_next_to_clean:%d\n",
1659 i, h->qs[i]->rx_ring.next_to_clean);
1660 pr_info("rx_queue%d_next_to_use:%d\n",
1661 i, h->qs[i]->rx_ring.next_to_use);
1662 }
1663}
1664
f7211729 1665/* for resetting subtask */
b5996f11 1666static void hns_nic_reset_subtask(struct hns_nic_priv *priv)
1667{
1668 enum hnae_port_type type = priv->ae_handle->port_type;
1669
1670 if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state))
1671 return;
1672 clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
1673
1674 /* If we're already down, removing or resetting, just bail */
1675 if (test_bit(NIC_STATE_DOWN, &priv->state) ||
1676 test_bit(NIC_STATE_REMOVING, &priv->state) ||
1677 test_bit(NIC_STATE_RESETTING, &priv->state))
1678 return;
1679
1680 hns_nic_dump(priv);
13ac695e
S		 1681 netdev_info(priv->netdev, "try to reset %s port!\n",
1682 (type == HNAE_PORT_DEBUG ? "debug" : "service"));
b5996f11 1683
1684 rtnl_lock();
90a505b9 1685 /* put off any impending NetWatchDogTimeout */
860e9538 1686 netif_trans_update(priv->netdev);
90a505b9 1687
13ac695e 1688 if (type == HNAE_PORT_DEBUG) {
b5996f11 1689 hns_nic_net_reinit(priv->netdev);
13ac695e
S		 1690 } else {
1691 netif_carrier_off(priv->netdev);
1692 netif_tx_disable(priv->netdev);
1693 }
b5996f11 1694 rtnl_unlock();
1695}
1696
1697/* for doing service complete*/
1698static void hns_nic_service_event_complete(struct hns_nic_priv *priv)
1699{
13ac695e 1700 WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state));
b5996f11 1701
1702 smp_mb__before_atomic();
1703 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
1704}
1705
1706static void hns_nic_service_task(struct work_struct *work)
1707{
1708 struct hns_nic_priv *priv
1709 = container_of(work, struct hns_nic_priv, service_task);
1710 struct hnae_handle *h = priv->ae_handle;
1711
1712 hns_nic_update_link_status(priv->netdev);
1713 h->dev->ops->update_led_status(h);
1714 hns_nic_update_stats(priv->netdev);
1715
1716 hns_nic_reset_subtask(priv);
1717 hns_nic_service_event_complete(priv);
1718}
1719
1720static void hns_nic_task_schedule(struct hns_nic_priv *priv)
1721{
1722 if (!test_bit(NIC_STATE_DOWN, &priv->state) &&
1723 !test_bit(NIC_STATE_REMOVING, &priv->state) &&
1724 !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state))
1725 (void)schedule_work(&priv->service_task);
1726}
1727
1728static void hns_nic_service_timer(unsigned long data)
1729{
1730 struct hns_nic_priv *priv = (struct hns_nic_priv *)data;
1731
1732 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
1733
1734 hns_nic_task_schedule(priv);
1735}
1736
1737/**
1738 * hns_tx_timeout_reset - initiate reset due to Tx timeout
1739 * @priv: driver private struct
1740 **/
1741static void hns_tx_timeout_reset(struct hns_nic_priv *priv)
1742{
1743 /* Do the reset outside of interrupt context */
1744 if (!test_bit(NIC_STATE_DOWN, &priv->state)) {
1745 set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
1746 netdev_warn(priv->netdev,
1747 "initiating reset due to tx timeout(%llu,0x%lx)\n",
1748 priv->tx_timeout_count, priv->state);
1749 priv->tx_timeout_count++;
1750 hns_nic_task_schedule(priv);
1751 }
1752}
1753
1754static int hns_nic_init_ring_data(struct hns_nic_priv *priv)
1755{
1756 struct hnae_handle *h = priv->ae_handle;
1757 struct hns_nic_ring_data *rd;
4b34aa41 1758 bool is_ver1 = AE_IS_VER1(priv->enet_ver);
b5996f11 1759 int i;
1760
1761 if (h->q_num > NIC_MAX_Q_PER_VF) {
1762 netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num);
1763 return -EINVAL;
1764 }
1765
1766 priv->ring_data = kzalloc(h->q_num * sizeof(*priv->ring_data) * 2,
1767 GFP_KERNEL);
1768 if (!priv->ring_data)
1769 return -ENOMEM;
1770
1771 for (i = 0; i < h->q_num; i++) {
1772 rd = &priv->ring_data[i];
1773 rd->queue_index = i;
1774 rd->ring = &h->qs[i]->tx_ring;
1775 rd->poll_one = hns_nic_tx_poll_one;
cee5add4
DH		 1776 rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro :
1777 hns_nic_tx_fini_pro_v2;
b5996f11 1778
1779 netif_napi_add(priv->netdev, &rd->napi,
1780 hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM);
1781 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1782 }
1783 for (i = h->q_num; i < h->q_num * 2; i++) {
1784 rd = &priv->ring_data[i];
1785 rd->queue_index = i - h->q_num;
1786 rd->ring = &h->qs[i - h->q_num]->rx_ring;
1787 rd->poll_one = hns_nic_rx_poll_one;
1788 rd->ex_process = hns_nic_rx_up_pro;
cee5add4
DH		 1789 rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro :
1790 hns_nic_rx_fini_pro_v2;
b5996f11 1791
1792 netif_napi_add(priv->netdev, &rd->napi,
1793 hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM);
1794 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1795 }
1796
1797 return 0;
1798}
1799
1800static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv)
1801{
1802 struct hnae_handle *h = priv->ae_handle;
1803 int i;
1804
1805 for (i = 0; i < h->q_num * 2; i++) {
1806 netif_napi_del(&priv->ring_data[i].napi);
1807 if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) {
13ac695e
S		 1808 (void)irq_set_affinity_hint(
1809 priv->ring_data[i].ring->irq,
1810 NULL);
b5996f11 1811 free_irq(priv->ring_data[i].ring->irq,
1812 &priv->ring_data[i]);
1813 }
1814
1815 priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1816 }
1817 kfree(priv->ring_data);
1818}
1819
13ac695e
S		 1820static void hns_nic_set_priv_ops(struct net_device *netdev)
1821{
1822 struct hns_nic_priv *priv = netdev_priv(netdev);
64353af6 1823 struct hnae_handle *h = priv->ae_handle;
13ac695e
S		 1824
1825 if (AE_IS_VER1(priv->enet_ver)) {
1826 priv->ops.fill_desc = fill_desc;
1827 priv->ops.get_rxd_bnum = get_rx_desc_bnum;
1828 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1829 } else {
1830 priv->ops.get_rxd_bnum = get_v2rx_desc_bnum;
64353af6
S		 1831 if ((netdev->features & NETIF_F_TSO) ||
1832 (netdev->features & NETIF_F_TSO6)) {
1833 priv->ops.fill_desc = fill_tso_desc;
1834 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
1835 /* This chip only support 7*4096 */
1836 netif_set_gso_max_size(netdev, 7 * 4096);
64353af6
S		 1837 } else {
1838 priv->ops.fill_desc = fill_v2_desc;
1839 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1840 }
6fe27464
DH		 1841 /* enable tso when init
1842 * control tso on/off through TSE bit in bd
1843 */
1844 h->dev->ops->set_tso_stats(h, 1);
13ac695e
S		 1845 }
1846}
1847
b5996f11 1848static int hns_nic_try_get_ae(struct net_device *ndev)
1849{
1850 struct hns_nic_priv *priv = netdev_priv(ndev);
1851 struct hnae_handle *h;
1852 int ret;
1853
1854 h = hnae_get_handle(&priv->netdev->dev,
7b2acae6 1855 priv->fwnode, priv->port_id, NULL);
b5996f11 1856 if (IS_ERR_OR_NULL(h)) {
daa8cfd9 1857 ret = -ENODEV;
b5996f11 1858 dev_dbg(priv->dev, "has not handle, register notifier!\n");
1859 goto out;
1860 }
1861 priv->ae_handle = h;
1862
1863 ret = hns_nic_init_phy(ndev, h);
1864 if (ret) {
1865 dev_err(priv->dev, "probe phy device fail!\n");
1866 goto out_init_phy;
1867 }
1868
1869 ret = hns_nic_init_ring_data(priv);
1870 if (ret) {
1871 ret = -ENOMEM;
1872 goto out_init_ring_data;
1873 }
1874
13ac695e
S		 1875 hns_nic_set_priv_ops(ndev);
1876
b5996f11 1877 ret = register_netdev(ndev);
1878 if (ret) {
1879 dev_err(priv->dev, "probe register netdev fail!\n");
1880 goto out_reg_ndev_fail;
1881 }
1882 return 0;
1883
1884out_reg_ndev_fail:
1885 hns_nic_uninit_ring_data(priv);
1886 priv->ring_data = NULL;
1887out_init_phy:
1888out_init_ring_data:
1889 hnae_put_handle(priv->ae_handle);
1890 priv->ae_handle = NULL;
1891out:
1892 return ret;
1893}
1894
1895static int hns_nic_notifier_action(struct notifier_block *nb,
1896 unsigned long action, void *data)
1897{
1898 struct hns_nic_priv *priv =
1899 container_of(nb, struct hns_nic_priv, notifier_block);
1900
1901 assert(action == HNAE_AE_REGISTER);
1902
1903 if (!hns_nic_try_get_ae(priv->netdev)) {
1904 hnae_unregister_notifier(&priv->notifier_block);
1905 priv->notifier_block.notifier_call = NULL;
1906 }
1907 return 0;
1908}
1909
1910static int hns_nic_dev_probe(struct platform_device *pdev)
1911{
1912 struct device *dev = &pdev->dev;
1913 struct net_device *ndev;
1914 struct hns_nic_priv *priv;
406adee9 1915 u32 port_id;
b5996f11 1916 int ret;
1917
1918 ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF);
1919 if (!ndev)
1920 return -ENOMEM;
1921
1922 platform_set_drvdata(pdev, ndev);
1923
1924 priv = netdev_priv(ndev);
1925 priv->dev = dev;
1926 priv->netdev = ndev;
1927
63434888
KY		 1928 if (dev_of_node(dev)) {
1929 struct device_node *ae_node;
b5996f11 1930
63434888
KY		 1931 if (of_device_is_compatible(dev->of_node,
1932 "hisilicon,hns-nic-v1"))
1933 priv->enet_ver = AE_VERSION_1;
1934 else
1935 priv->enet_ver = AE_VERSION_2;
1936
1937 ae_node = of_parse_phandle(dev->of_node, "ae-handle", 0);
1938 if (IS_ERR_OR_NULL(ae_node)) {
1939 ret = PTR_ERR(ae_node);
1940 dev_err(dev, "not find ae-handle\n");
1941 goto out_read_prop_fail;
1942 }
1943 priv->fwnode = &ae_node->fwnode;
1944 } else if (is_acpi_node(dev->fwnode)) {
1945 struct acpi_reference_args args;
1946
1947 if (acpi_dev_found(hns_enet_acpi_match[0].id))
1948 priv->enet_ver = AE_VERSION_1;
1949 else if (acpi_dev_found(hns_enet_acpi_match[1].id))
1950 priv->enet_ver = AE_VERSION_2;
1951 else
1952 return -ENXIO;
1953
1954 /* try to find port-idx-in-ae first */
1955 ret = acpi_node_get_property_reference(dev->fwnode,
1956 "ae-handle", 0, &args);
1957 if (ret) {
1958 dev_err(dev, "not find ae-handle\n");
1959 goto out_read_prop_fail;
1960 }
1961 priv->fwnode = acpi_fwnode_handle(args.adev);
1962 } else {
1963 dev_err(dev, "cannot read cfg data from OF or acpi\n");
1964 return -ENXIO;
48189d6a 1965 }
7b2acae6 1966
6162928c 1967 ret = device_property_read_u32(dev, "port-idx-in-ae", &port_id);
406adee9
YZZ		 1968 if (ret) {
1969 /* only for old code compatible */
6162928c 1970 ret = device_property_read_u32(dev, "port-id", &port_id);
406adee9
YZZ		 1971 if (ret)
1972 goto out_read_prop_fail;
1973 /* for old dts, we need to caculate the port offset */
1974 port_id = port_id < HNS_SRV_OFFSET ? port_id + HNS_DEBUG_OFFSET
1975 : port_id - HNS_SRV_OFFSET;
1976 }
1977 priv->port_id = port_id;
b5996f11 1978
1979 hns_init_mac_addr(ndev);
1980
1981 ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT;
1982 ndev->priv_flags |= IFF_UNICAST_FLT;
1983 ndev->netdev_ops = &hns_nic_netdev_ops;
1984 hns_ethtool_set_ops(ndev);
13ac695e 1985
b5996f11 1986 ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1987 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
1988 NETIF_F_GRO;
1989 ndev->vlan_features |=
1990 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM;
1991 ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO;
1992
13ac695e
S		 1993 switch (priv->enet_ver) {
1994 case AE_VERSION_2:
64353af6 1995 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
13ac695e
S		 1996 ndev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1997 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
64353af6 1998 NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6;
13ac695e
S		 1999 break;
2000 default:
2001 break;
2002 }
2003
b5996f11 2004 SET_NETDEV_DEV(ndev, dev);
2005
2006 if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)))
2007 dev_dbg(dev, "set mask to 64bit\n");
2008 else
39c94417 2009 dev_err(dev, "set mask to 64bit fail!\n");
b5996f11 2010
2011 /* carrier off reporting is important to ethtool even BEFORE open */
2012 netif_carrier_off(ndev);
2013
2014 setup_timer(&priv->service_timer, hns_nic_service_timer,
2015 (unsigned long)priv);
2016 INIT_WORK(&priv->service_task, hns_nic_service_task);
2017
2018 set_bit(NIC_STATE_SERVICE_INITED, &priv->state);
2019 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
2020 set_bit(NIC_STATE_DOWN, &priv->state);
2021
2022 if (hns_nic_try_get_ae(priv->netdev)) {
2023 priv->notifier_block.notifier_call = hns_nic_notifier_action;
2024 ret = hnae_register_notifier(&priv->notifier_block);
2025 if (ret) {
2026 dev_err(dev, "register notifier fail!\n");
2027 goto out_notify_fail;
2028 }
2029 dev_dbg(dev, "has not handle, register notifier!\n");
2030 }
2031
2032 return 0;
2033
2034out_notify_fail:
2035 (void)cancel_work_sync(&priv->service_task);
48189d6a 2036out_read_prop_fail:
b5996f11 2037 free_netdev(ndev);
2038 return ret;
2039}
2040
2041static int hns_nic_dev_remove(struct platform_device *pdev)
2042{
2043 struct net_device *ndev = platform_get_drvdata(pdev);
2044 struct hns_nic_priv *priv = netdev_priv(ndev);
2045
2046 if (ndev->reg_state != NETREG_UNINITIALIZED)
2047 unregister_netdev(ndev);
2048
2049 if (priv->ring_data)
2050 hns_nic_uninit_ring_data(priv);
2051 priv->ring_data = NULL;
2052
2053 if (priv->phy)
2054 phy_disconnect(priv->phy);
2055 priv->phy = NULL;
2056
2057 if (!IS_ERR_OR_NULL(priv->ae_handle))
2058 hnae_put_handle(priv->ae_handle);
2059 priv->ae_handle = NULL;
2060 if (priv->notifier_block.notifier_call)
2061 hnae_unregister_notifier(&priv->notifier_block);
2062 priv->notifier_block.notifier_call = NULL;
2063
2064 set_bit(NIC_STATE_REMOVING, &priv->state);
2065 (void)cancel_work_sync(&priv->service_task);
2066
2067 free_netdev(ndev);
2068 return 0;
2069}
2070
2071static const struct of_device_id hns_enet_of_match[] = {
2072 {.compatible = "hisilicon,hns-nic-v1",},
2073 {.compatible = "hisilicon,hns-nic-v2",},
2074 {},
2075};
2076
2077MODULE_DEVICE_TABLE(of, hns_enet_of_match);
2078
2079static struct platform_driver hns_nic_dev_driver = {
2080 .driver = {
2081 .name = "hns-nic",
b5996f11 2082 .of_match_table = hns_enet_of_match,
63434888 2083 .acpi_match_table = ACPI_PTR(hns_enet_acpi_match),
b5996f11 2084 },
2085 .probe = hns_nic_dev_probe,
2086 .remove = hns_nic_dev_remove,
2087};
2088
2089module_platform_driver(hns_nic_dev_driver);
2090
2091MODULE_DESCRIPTION("HISILICON HNS Ethernet driver");
2092MODULE_AUTHOR("Hisilicon, Inc.");
2093MODULE_LICENSE("GPL");
2094MODULE_ALIAS("platform:hns-nic");
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