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inet: kill unused skb_free op
[mirror_ubuntu-zesty-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;
51 int skb_tmp_len;
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
69 /*config bd buffer end */
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
73 if (type == DESC_TYPE_SKB) {
74 skb = (struct sk_buff *)priv;
75
76 if (skb->ip_summed == CHECKSUM_PARTIAL) {
77 skb_reset_mac_len(skb);
78 protocol = skb->protocol;
79 ip_offset = ETH_HLEN;
80
81 if (protocol == htons(ETH_P_8021Q)) {
82 ip_offset += VLAN_HLEN;
83 protocol = vlan_get_protocol(skb);
84 skb->protocol = protocol;
85 }
86
87 if (skb->protocol == htons(ETH_P_IP)) {
88 iphdr = ip_hdr(skb);
89 hnae_set_bit(rrcfv, HNSV2_TXD_L3CS_B, 1);
90 hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1);
91
92 /* check for tcp/udp header */
93 if (iphdr->protocol == IPPROTO_TCP) {
94 hnae_set_bit(tvsvsn,
95 HNSV2_TXD_TSE_B, 1);
96 skb_tmp_len = SKB_TMP_LEN(skb);
97 l4_len = tcp_hdrlen(skb);
98 mss = mtu - skb_tmp_len - ETH_FCS_LEN;
99 paylen = skb->len - skb_tmp_len;
100 }
101 } else if (skb->protocol == htons(ETH_P_IPV6)) {
102 hnae_set_bit(tvsvsn, HNSV2_TXD_IPV6_B, 1);
103 ipv6hdr = ipv6_hdr(skb);
104 hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1);
105
106 /* check for tcp/udp header */
107 if (ipv6hdr->nexthdr == IPPROTO_TCP) {
108 hnae_set_bit(tvsvsn,
109 HNSV2_TXD_TSE_B, 1);
110 skb_tmp_len = SKB_TMP_LEN(skb);
111 l4_len = tcp_hdrlen(skb);
112 mss = mtu - skb_tmp_len - ETH_FCS_LEN;
113 paylen = skb->len - skb_tmp_len;
114 }
115 }
116 desc->tx.ip_offset = ip_offset;
117 desc->tx.tse_vlan_snap_v6_sctp_nth = tvsvsn;
118 desc->tx.mss = cpu_to_le16(mss);
119 desc->tx.l4_len = l4_len;
120 desc->tx.paylen = cpu_to_le16(paylen);
121 }
122 }
123
124 hnae_set_bit(rrcfv, HNSV2_TXD_FE_B, frag_end);
125
126 desc->tx.bn_pid = bn_pid;
127 desc->tx.ra_ri_cs_fe_vld = rrcfv;
128
129 ring_ptr_move_fw(ring, next_to_use);
130}
131
b5996f11 132static void fill_desc(struct hnae_ring *ring, void *priv,
133 int size, dma_addr_t dma, int frag_end,
13ac695e 134 int buf_num, enum hns_desc_type type, int mtu)
b5996f11 135{
136 struct hnae_desc *desc = &ring->desc[ring->next_to_use];
137 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
138 struct sk_buff *skb;
139 __be16 protocol;
140 u32 ip_offset;
141 u32 asid_bufnum_pid = 0;
142 u32 flag_ipoffset = 0;
143
144 desc_cb->priv = priv;
145 desc_cb->length = size;
146 desc_cb->dma = dma;
147 desc_cb->type = type;
148
149 desc->addr = cpu_to_le64(dma);
150 desc->tx.send_size = cpu_to_le16((u16)size);
151
152 /*config bd buffer end */
153 flag_ipoffset |= 1 << HNS_TXD_VLD_B;
154
155 asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S;
156
157 if (type == DESC_TYPE_SKB) {
158 skb = (struct sk_buff *)priv;
159
160 if (skb->ip_summed == CHECKSUM_PARTIAL) {
161 protocol = skb->protocol;
162 ip_offset = ETH_HLEN;
163
164 /*if it is a SW VLAN check the next protocol*/
165 if (protocol == htons(ETH_P_8021Q)) {
166 ip_offset += VLAN_HLEN;
167 protocol = vlan_get_protocol(skb);
168 skb->protocol = protocol;
169 }
170
171 if (skb->protocol == htons(ETH_P_IP)) {
172 flag_ipoffset |= 1 << HNS_TXD_L3CS_B;
173 /* check for tcp/udp header */
174 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
175
176 } else if (skb->protocol == htons(ETH_P_IPV6)) {
177 /* ipv6 has not l3 cs, check for L4 header */
178 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
179 }
180
181 flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S;
182 }
183 }
184
185 flag_ipoffset |= frag_end << HNS_TXD_FE_B;
186
187 desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid);
188 desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset);
189
190 ring_ptr_move_fw(ring, next_to_use);
191}
192
193static void unfill_desc(struct hnae_ring *ring)
194{
195 ring_ptr_move_bw(ring, next_to_use);
196}
197
13ac695e
S		 198static int hns_nic_maybe_stop_tx(
199 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
b5996f11 200{
13ac695e
S		 201 struct sk_buff *skb = *out_skb;
202 struct sk_buff *new_skb = NULL;
b5996f11 203 int buf_num;
b5996f11 204
205 /* no. of segments (plus a header) */
206 buf_num = skb_shinfo(skb)->nr_frags + 1;
207
208 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
13ac695e
S		 209 if (ring_space(ring) < 1)
210 return -EBUSY;
b5996f11 211
212 new_skb = skb_copy(skb, GFP_ATOMIC);
13ac695e
S		 213 if (!new_skb)
214 return -ENOMEM;
b5996f11 215
216 dev_kfree_skb_any(skb);
13ac695e 217 *out_skb = new_skb;
b5996f11 218 buf_num = 1;
b5996f11 219 } else if (buf_num > ring_space(ring)) {
13ac695e
S		 220 return -EBUSY;
221 }
222
223 *bnum = buf_num;
224 return 0;
225}
226
64353af6
S		 227static int hns_nic_maybe_stop_tso(
228 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
229{
230 int i;
231 int size;
232 int buf_num;
233 int frag_num;
234 struct sk_buff *skb = *out_skb;
235 struct sk_buff *new_skb = NULL;
236 struct skb_frag_struct *frag;
237
238 size = skb_headlen(skb);
239 buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
240
241 frag_num = skb_shinfo(skb)->nr_frags;
242 for (i = 0; i < frag_num; i++) {
243 frag = &skb_shinfo(skb)->frags[i];
244 size = skb_frag_size(frag);
245 buf_num += (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
246 }
247
248 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
249 buf_num = (skb->len + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
250 if (ring_space(ring) < buf_num)
251 return -EBUSY;
252 /* manual split the send packet */
253 new_skb = skb_copy(skb, GFP_ATOMIC);
254 if (!new_skb)
255 return -ENOMEM;
256 dev_kfree_skb_any(skb);
257 *out_skb = new_skb;
258
259 } else if (ring_space(ring) < buf_num) {
260 return -EBUSY;
261 }
262
263 *bnum = buf_num;
264 return 0;
265}
266
267static void fill_tso_desc(struct hnae_ring *ring, void *priv,
268 int size, dma_addr_t dma, int frag_end,
269 int buf_num, enum hns_desc_type type, int mtu)
270{
271 int frag_buf_num;
272 int sizeoflast;
273 int k;
274
275 frag_buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
276 sizeoflast = size % BD_MAX_SEND_SIZE;
277 sizeoflast = sizeoflast ? sizeoflast : BD_MAX_SEND_SIZE;
278
279 /* when the frag size is bigger than hardware, split this frag */
280 for (k = 0; k < frag_buf_num; k++)
281 fill_v2_desc(ring, priv,
282 (k == frag_buf_num - 1) ?
283 sizeoflast : BD_MAX_SEND_SIZE,
284 dma + BD_MAX_SEND_SIZE * k,
285 frag_end && (k == frag_buf_num - 1) ? 1 : 0,
286 buf_num,
287 (type == DESC_TYPE_SKB && !k) ?
288 DESC_TYPE_SKB : DESC_TYPE_PAGE,
289 mtu);
290}
291
13ac695e
S		 292int hns_nic_net_xmit_hw(struct net_device *ndev,
293 struct sk_buff *skb,
294 struct hns_nic_ring_data *ring_data)
295{
296 struct hns_nic_priv *priv = netdev_priv(ndev);
297 struct device *dev = priv->dev;
298 struct hnae_ring *ring = ring_data->ring;
299 struct netdev_queue *dev_queue;
300 struct skb_frag_struct *frag;
301 int buf_num;
302 int seg_num;
303 dma_addr_t dma;
304 int size, next_to_use;
305 int i;
306
307 switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) {
308 case -EBUSY:
b5996f11 309 ring->stats.tx_busy++;
310 goto out_net_tx_busy;
13ac695e
S		 311 case -ENOMEM:
312 ring->stats.sw_err_cnt++;
313 netdev_err(ndev, "no memory to xmit!\n");
314 goto out_err_tx_ok;
315 default:
316 break;
b5996f11 317 }
13ac695e
S		 318
319 /* no. of segments (plus a header) */
320 seg_num = skb_shinfo(skb)->nr_frags + 1;
b5996f11 321 next_to_use = ring->next_to_use;
322
323 /* fill the first part */
324 size = skb_headlen(skb);
325 dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE);
326 if (dma_mapping_error(dev, dma)) {
327 netdev_err(ndev, "TX head DMA map failed\n");
328 ring->stats.sw_err_cnt++;
329 goto out_err_tx_ok;
330 }
13ac695e
S		 331 priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0,
332 buf_num, DESC_TYPE_SKB, ndev->mtu);
b5996f11 333
334 /* fill the fragments */
13ac695e 335 for (i = 1; i < seg_num; i++) {
b5996f11 336 frag = &skb_shinfo(skb)->frags[i - 1];
337 size = skb_frag_size(frag);
338 dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
339 if (dma_mapping_error(dev, dma)) {
340 netdev_err(ndev, "TX frag(%d) DMA map failed\n", i);
341 ring->stats.sw_err_cnt++;
342 goto out_map_frag_fail;
343 }
13ac695e
S		 344 priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma,
345 seg_num - 1 == i ? 1 : 0, buf_num,
346 DESC_TYPE_PAGE, ndev->mtu);
b5996f11 347 }
348
349 /*complete translate all packets*/
350 dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping);
351 netdev_tx_sent_queue(dev_queue, skb->len);
352
353 wmb(); /* commit all data before submit */
354 assert(skb->queue_mapping < priv->ae_handle->q_num);
355 hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num);
356 ring->stats.tx_pkts++;
357 ring->stats.tx_bytes += skb->len;
358
359 return NETDEV_TX_OK;
360
361out_map_frag_fail:
362
13ac695e 363 while (ring->next_to_use != next_to_use) {
b5996f11 364 unfill_desc(ring);
13ac695e
S		 365 if (ring->next_to_use != next_to_use)
366 dma_unmap_page(dev,
367 ring->desc_cb[ring->next_to_use].dma,
368 ring->desc_cb[ring->next_to_use].length,
369 DMA_TO_DEVICE);
370 else
371 dma_unmap_single(dev,
372 ring->desc_cb[next_to_use].dma,
373 ring->desc_cb[next_to_use].length,
374 DMA_TO_DEVICE);
b5996f11 375 }
376
b5996f11 377out_err_tx_ok:
378
379 dev_kfree_skb_any(skb);
380 return NETDEV_TX_OK;
381
382out_net_tx_busy:
383
384 netif_stop_subqueue(ndev, skb->queue_mapping);
385
386 /* Herbert's original patch had:
387 * smp_mb__after_netif_stop_queue();
388 * but since that doesn't exist yet, just open code it.
389 */
390 smp_mb();
391 return NETDEV_TX_BUSY;
392}
393
394/**
395 * hns_nic_get_headlen - determine size of header for RSC/LRO/GRO/FCOE
396 * @data: pointer to the start of the headers
397 * @max: total length of section to find headers in
398 *
399 * This function is meant to determine the length of headers that will
400 * be recognized by hardware for LRO, GRO, and RSC offloads. The main
401 * motivation of doing this is to only perform one pull for IPv4 TCP
402 * packets so that we can do basic things like calculating the gso_size
403 * based on the average data per packet.
404 **/
405static unsigned int hns_nic_get_headlen(unsigned char *data, u32 flag,
406 unsigned int max_size)
407{
408 unsigned char *network;
409 u8 hlen;
410
411 /* this should never happen, but better safe than sorry */
412 if (max_size < ETH_HLEN)
413 return max_size;
414
415 /* initialize network frame pointer */
416 network = data;
417
418 /* set first protocol and move network header forward */
419 network += ETH_HLEN;
420
421 /* handle any vlan tag if present */
422 if (hnae_get_field(flag, HNS_RXD_VLAN_M, HNS_RXD_VLAN_S)
423 == HNS_RX_FLAG_VLAN_PRESENT) {
424 if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN))
425 return max_size;
426
427 network += VLAN_HLEN;
428 }
429
430 /* handle L3 protocols */
431 if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S)
432 == HNS_RX_FLAG_L3ID_IPV4) {
433 if ((typeof(max_size))(network - data) >
434 (max_size - sizeof(struct iphdr)))
435 return max_size;
436
437 /* access ihl as a u8 to avoid unaligned access on ia64 */
438 hlen = (network[0] & 0x0F) << 2;
439
440 /* verify hlen meets minimum size requirements */
441 if (hlen < sizeof(struct iphdr))
442 return network - data;
443
444 /* record next protocol if header is present */
445 } else if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S)
446 == HNS_RX_FLAG_L3ID_IPV6) {
447 if ((typeof(max_size))(network - data) >
448 (max_size - sizeof(struct ipv6hdr)))
449 return max_size;
450
451 /* record next protocol */
452 hlen = sizeof(struct ipv6hdr);
453 } else {
454 return network - data;
455 }
456
457 /* relocate pointer to start of L4 header */
458 network += hlen;
459
460 /* finally sort out TCP/UDP */
461 if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S)
462 == HNS_RX_FLAG_L4ID_TCP) {
463 if ((typeof(max_size))(network - data) >
464 (max_size - sizeof(struct tcphdr)))
465 return max_size;
466
467 /* access doff as a u8 to avoid unaligned access on ia64 */
468 hlen = (network[12] & 0xF0) >> 2;
469
470 /* verify hlen meets minimum size requirements */
471 if (hlen < sizeof(struct tcphdr))
472 return network - data;
473
474 network += hlen;
475 } else if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S)
476 == HNS_RX_FLAG_L4ID_UDP) {
477 if ((typeof(max_size))(network - data) >
478 (max_size - sizeof(struct udphdr)))
479 return max_size;
480
481 network += sizeof(struct udphdr);
482 }
483
484 /* If everything has gone correctly network should be the
485 * data section of the packet and will be the end of the header.
486 * If not then it probably represents the end of the last recognized
487 * header.
488 */
489 if ((typeof(max_size))(network - data) < max_size)
490 return network - data;
491 else
492 return max_size;
493}
494
9cbe9fd5 495static void hns_nic_reuse_page(struct sk_buff *skb, int i,
496 struct hnae_ring *ring, int pull_len,
497 struct hnae_desc_cb *desc_cb)
b5996f11 498{
9cbe9fd5 499 struct hnae_desc *desc;
500 int truesize, size;
501 int last_offset;
502
503 desc = &ring->desc[ring->next_to_clean];
504 size = le16_to_cpu(desc->rx.size);
505
506#if (PAGE_SIZE < 8192)
507 if (hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048) {
508 truesize = hnae_buf_size(ring);
509 } else {
510 truesize = ALIGN(size, L1_CACHE_BYTES);
511 last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
512 }
513
514#else
515 truesize = ALIGN(size, L1_CACHE_BYTES);
516 last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
517#endif
518
519 skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len,
520 size - pull_len, truesize - pull_len);
521
b5996f11 522 /* avoid re-using remote pages,flag default unreuse */
523 if (likely(page_to_nid(desc_cb->priv) == numa_node_id())) {
9cbe9fd5 524#if (PAGE_SIZE < 8192)
525 if (hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048) {
526 /* if we are only owner of page we can reuse it */
527 if (likely(page_count(desc_cb->priv) == 1)) {
528 /* flip page offset to other buffer */
529 desc_cb->page_offset ^= truesize;
530
531 desc_cb->reuse_flag = 1;
532 /* bump ref count on page before it is given*/
533 get_page(desc_cb->priv);
534 }
535 return;
536 }
537#endif
b5996f11 538 /* move offset up to the next cache line */
9cbe9fd5 539 desc_cb->page_offset += truesize;
b5996f11 540
541 if (desc_cb->page_offset <= last_offset) {
542 desc_cb->reuse_flag = 1;
543 /* bump ref count on page before it is given*/
544 get_page(desc_cb->priv);
545 }
546 }
547}
548
13ac695e
S		 549static void get_v2rx_desc_bnum(u32 bnum_flag, int *out_bnum)
550{
551 *out_bnum = hnae_get_field(bnum_flag,
552 HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S) + 1;
553}
554
555static void get_rx_desc_bnum(u32 bnum_flag, int *out_bnum)
556{
557 *out_bnum = hnae_get_field(bnum_flag,
558 HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S);
559}
560
b5996f11 561static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data,
562 struct sk_buff **out_skb, int *out_bnum)
563{
564 struct hnae_ring *ring = ring_data->ring;
565 struct net_device *ndev = ring_data->napi.dev;
13ac695e 566 struct hns_nic_priv *priv = netdev_priv(ndev);
b5996f11 567 struct sk_buff *skb;
568 struct hnae_desc *desc;
569 struct hnae_desc_cb *desc_cb;
570 unsigned char *va;
9cbe9fd5 571 int bnum, length, i;
b5996f11 572 int pull_len;
573 u32 bnum_flag;
574
b5996f11 575 desc = &ring->desc[ring->next_to_clean];
576 desc_cb = &ring->desc_cb[ring->next_to_clean];
13ac695e
S		 577
578 prefetch(desc);
579
b5996f11 580 va = (unsigned char *)desc_cb->buf + desc_cb->page_offset;
581
13ac695e
S		 582 /* prefetch first cache line of first page */
583 prefetch(va);
584#if L1_CACHE_BYTES < 128
585 prefetch(va + L1_CACHE_BYTES);
586#endif
587
588 skb = *out_skb = napi_alloc_skb(&ring_data->napi,
589 HNS_RX_HEAD_SIZE);
b5996f11 590 if (unlikely(!skb)) {
591 netdev_err(ndev, "alloc rx skb fail\n");
592 ring->stats.sw_err_cnt++;
593 return -ENOMEM;
594 }
595
9cbe9fd5 596 prefetchw(skb->data);
13ac695e
S		 597 length = le16_to_cpu(desc->rx.pkt_len);
598 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
599 priv->ops.get_rxd_bnum(bnum_flag, &bnum);
600 *out_bnum = bnum;
601
b5996f11 602 if (length <= HNS_RX_HEAD_SIZE) {
603 memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
604
605 /* we can reuse buffer as-is, just make sure it is local */
606 if (likely(page_to_nid(desc_cb->priv) == numa_node_id()))
607 desc_cb->reuse_flag = 1;
608 else /* this page cannot be reused so discard it */
609 put_page(desc_cb->priv);
610
611 ring_ptr_move_fw(ring, next_to_clean);
612
613 if (unlikely(bnum != 1)) { /* check err*/
614 *out_bnum = 1;
615 goto out_bnum_err;
616 }
617 } else {
618 ring->stats.seg_pkt_cnt++;
619
620 pull_len = hns_nic_get_headlen(va, bnum_flag, HNS_RX_HEAD_SIZE);
621 memcpy(__skb_put(skb, pull_len), va,
622 ALIGN(pull_len, sizeof(long)));
623
9cbe9fd5 624 hns_nic_reuse_page(skb, 0, ring, pull_len, desc_cb);
b5996f11 625 ring_ptr_move_fw(ring, next_to_clean);
626
627 if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/
628 *out_bnum = 1;
629 goto out_bnum_err;
630 }
631 for (i = 1; i < bnum; i++) {
632 desc = &ring->desc[ring->next_to_clean];
633 desc_cb = &ring->desc_cb[ring->next_to_clean];
b5996f11 634
9cbe9fd5 635 hns_nic_reuse_page(skb, i, ring, 0, desc_cb);
b5996f11 636 ring_ptr_move_fw(ring, next_to_clean);
637 }
638 }
639
640 /* check except process, free skb and jump the desc */
641 if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) {
642out_bnum_err:
643 *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/
644 netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n",
645 bnum, ring->max_desc_num_per_pkt,
646 length, (int)MAX_SKB_FRAGS,
647 ((u64 *)desc)[0], ((u64 *)desc)[1]);
648 ring->stats.err_bd_num++;
649 dev_kfree_skb_any(skb);
650 return -EDOM;
651 }
652
653 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
654
655 if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) {
656 netdev_err(ndev, "no valid bd,%016llx,%016llx\n",
657 ((u64 *)desc)[0], ((u64 *)desc)[1]);
658 ring->stats.non_vld_descs++;
659 dev_kfree_skb_any(skb);
660 return -EINVAL;
661 }
662
663 if (unlikely((!desc->rx.pkt_len) ||
664 hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) {
b5996f11 665 ring->stats.err_pkt_len++;
666 dev_kfree_skb_any(skb);
667 return -EFAULT;
668 }
669
670 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) {
b5996f11 671 ring->stats.l2_err++;
672 dev_kfree_skb_any(skb);
673 return -EFAULT;
674 }
675
676 ring->stats.rx_pkts++;
677 ring->stats.rx_bytes += skb->len;
678
679 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L3E_B) ||
680 hnae_get_bit(bnum_flag, HNS_RXD_L4E_B))) {
b5996f11 681 ring->stats.l3l4_csum_err++;
682 return 0;
683 }
684
685 skb->ip_summed = CHECKSUM_UNNECESSARY;
686
687 return 0;
688}
689
690static void
691hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count)
692{
693 int i, ret;
694 struct hnae_desc_cb res_cbs;
695 struct hnae_desc_cb *desc_cb;
696 struct hnae_ring *ring = ring_data->ring;
697 struct net_device *ndev = ring_data->napi.dev;
698
699 for (i = 0; i < cleand_count; i++) {
700 desc_cb = &ring->desc_cb[ring->next_to_use];
701 if (desc_cb->reuse_flag) {
702 ring->stats.reuse_pg_cnt++;
703 hnae_reuse_buffer(ring, ring->next_to_use);
704 } else {
705 ret = hnae_reserve_buffer_map(ring, &res_cbs);
706 if (ret) {
707 ring->stats.sw_err_cnt++;
708 netdev_err(ndev, "hnae reserve buffer map failed.\n");
709 break;
710 }
711 hnae_replace_buffer(ring, ring->next_to_use, &res_cbs);
712 }
713
714 ring_ptr_move_fw(ring, next_to_use);
715 }
716
717 wmb(); /* make all data has been write before submit */
718 writel_relaxed(i, ring->io_base + RCB_REG_HEAD);
719}
720
721/* return error number for error or number of desc left to take
722 */
723static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data,
724 struct sk_buff *skb)
725{
726 struct net_device *ndev = ring_data->napi.dev;
727
728 skb->protocol = eth_type_trans(skb, ndev);
729 (void)napi_gro_receive(&ring_data->napi, skb);
730 ndev->last_rx = jiffies;
731}
732
733static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data,
734 int budget, void *v)
735{
736 struct hnae_ring *ring = ring_data->ring;
737 struct sk_buff *skb;
738 int num, bnum, ex_num;
739#define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
740 int recv_pkts, recv_bds, clean_count, err;
741
742 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
743 rmb(); /* make sure num taken effect before the other data is touched */
744
745 recv_pkts = 0, recv_bds = 0, clean_count = 0;
746recv:
747 while (recv_pkts < budget && recv_bds < num) {
748 /* reuse or realloc buffers*/
749 if (clean_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
750 hns_nic_alloc_rx_buffers(ring_data, clean_count);
751 clean_count = 0;
752 }
753
754 /* poll one pkg*/
755 err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum);
756 if (unlikely(!skb)) /* this fault cannot be repaired */
757 break;
758
759 recv_bds += bnum;
760 clean_count += bnum;
761 if (unlikely(err)) { /* do jump the err */
762 recv_pkts++;
763 continue;
764 }
765
766 /* do update ip stack process*/
767 ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)(
768 ring_data, skb);
769 recv_pkts++;
770 }
771
772 /* make all data has been write before submit */
b5996f11 773 if (recv_pkts < budget) {
774 ex_num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
9cbe9fd5 775
13ac695e
S		 776 if (ex_num > clean_count) {
777 num += ex_num - clean_count;
9cbe9fd5 778 rmb(); /*complete read rx ring bd number*/
b5996f11 779 goto recv;
780 }
781 }
782
13ac695e
S		 783 /* make all data has been write before submit */
784 if (clean_count > 0)
785 hns_nic_alloc_rx_buffers(ring_data, clean_count);
786
b5996f11 787 return recv_pkts;
788}
789
790static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
791{
792 struct hnae_ring *ring = ring_data->ring;
793 int num = 0;
794
795 /* for hardware bug fixed */
796 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
797
798 if (num > 0) {
799 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
800 ring_data->ring, 1);
801
802 napi_schedule(&ring_data->napi);
803 }
804}
805
806static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring,
807 int *bytes, int *pkts)
808{
809 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
810
811 (*pkts) += (desc_cb->type == DESC_TYPE_SKB);
812 (*bytes) += desc_cb->length;
813 /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
814 hnae_free_buffer_detach(ring, ring->next_to_clean);
815
816 ring_ptr_move_fw(ring, next_to_clean);
817}
818
819static int is_valid_clean_head(struct hnae_ring *ring, int h)
820{
821 int u = ring->next_to_use;
822 int c = ring->next_to_clean;
823
824 if (unlikely(h > ring->desc_num))
825 return 0;
826
827 assert(u > 0 && u < ring->desc_num);
828 assert(c > 0 && c < ring->desc_num);
829 assert(u != c && h != c); /* must be checked before call this func */
830
831 return u > c ? (h > c && h <= u) : (h > c || h <= u);
832}
833
834/* netif_tx_lock will turn down the performance, set only when necessary */
835#ifdef CONFIG_NET_POLL_CONTROLLER
836#define NETIF_TX_LOCK(ndev) netif_tx_lock(ndev)
837#define NETIF_TX_UNLOCK(ndev) netif_tx_unlock(ndev)
838#else
839#define NETIF_TX_LOCK(ndev)
840#define NETIF_TX_UNLOCK(ndev)
841#endif
842/* reclaim all desc in one budget
843 * return error or number of desc left
844 */
845static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
846 int budget, void *v)
847{
848 struct hnae_ring *ring = ring_data->ring;
849 struct net_device *ndev = ring_data->napi.dev;
850 struct netdev_queue *dev_queue;
851 struct hns_nic_priv *priv = netdev_priv(ndev);
852 int head;
853 int bytes, pkts;
854
855 NETIF_TX_LOCK(ndev);
856
857 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
858 rmb(); /* make sure head is ready before touch any data */
859
860 if (is_ring_empty(ring) || head == ring->next_to_clean) {
861 NETIF_TX_UNLOCK(ndev);
862 return 0; /* no data to poll */
863 }
864
865 if (!is_valid_clean_head(ring, head)) {
866 netdev_err(ndev, "wrong head (%d, %d-%d)\n", head,
867 ring->next_to_use, ring->next_to_clean);
868 ring->stats.io_err_cnt++;
869 NETIF_TX_UNLOCK(ndev);
870 return -EIO;
871 }
872
873 bytes = 0;
874 pkts = 0;
9cbe9fd5 875 while (head != ring->next_to_clean) {
b5996f11 876 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
9cbe9fd5 877 /* issue prefetch for next Tx descriptor */
878 prefetch(&ring->desc_cb[ring->next_to_clean]);
879 }
b5996f11 880
881 NETIF_TX_UNLOCK(ndev);
882
883 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
884 netdev_tx_completed_queue(dev_queue, pkts, bytes);
885
13ac695e
S		 886 if (unlikely(priv->link && !netif_carrier_ok(ndev)))
887 netif_carrier_on(ndev);
888
b5996f11 889 if (unlikely(pkts && netif_carrier_ok(ndev) &&
890 (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) {
891 /* Make sure that anybody stopping the queue after this
892 * sees the new next_to_clean.
893 */
894 smp_mb();
895 if (netif_tx_queue_stopped(dev_queue) &&
896 !test_bit(NIC_STATE_DOWN, &priv->state)) {
897 netif_tx_wake_queue(dev_queue);
898 ring->stats.restart_queue++;
899 }
900 }
901 return 0;
902}
903
904static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
905{
906 struct hnae_ring *ring = ring_data->ring;
907 int head = ring->next_to_clean;
908
909 /* for hardware bug fixed */
910 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
911
912 if (head != ring->next_to_clean) {
913 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
914 ring_data->ring, 1);
915
916 napi_schedule(&ring_data->napi);
917 }
918}
919
920static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
921{
922 struct hnae_ring *ring = ring_data->ring;
923 struct net_device *ndev = ring_data->napi.dev;
924 struct netdev_queue *dev_queue;
925 int head;
926 int bytes, pkts;
927
928 NETIF_TX_LOCK(ndev);
929
930 head = ring->next_to_use; /* ntu :soft setted ring position*/
931 bytes = 0;
932 pkts = 0;
933 while (head != ring->next_to_clean)
934 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
935
936 NETIF_TX_UNLOCK(ndev);
937
938 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
939 netdev_tx_reset_queue(dev_queue);
940}
941
942static int hns_nic_common_poll(struct napi_struct *napi, int budget)
943{
944 struct hns_nic_ring_data *ring_data =
945 container_of(napi, struct hns_nic_ring_data, napi);
946 int clean_complete = ring_data->poll_one(
947 ring_data, budget, ring_data->ex_process);
948
949 if (clean_complete >= 0 && clean_complete < budget) {
950 napi_complete(napi);
951 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
952 ring_data->ring, 0);
953
954 ring_data->fini_process(ring_data);
9cbe9fd5 955 return 0;
b5996f11 956 }
957
958 return clean_complete;
959}
960
961static irqreturn_t hns_irq_handle(int irq, void *dev)
962{
963 struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev;
964
965 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
966 ring_data->ring, 1);
967 napi_schedule(&ring_data->napi);
968
969 return IRQ_HANDLED;
970}
971
972/**
973 *hns_nic_adjust_link - adjust net work mode by the phy stat or new param
974 *@ndev: net device
975 */
976static void hns_nic_adjust_link(struct net_device *ndev)
977{
978 struct hns_nic_priv *priv = netdev_priv(ndev);
979 struct hnae_handle *h = priv->ae_handle;
980
981 h->dev->ops->adjust_link(h, ndev->phydev->speed, ndev->phydev->duplex);
982}
983
984/**
985 *hns_nic_init_phy - init phy
986 *@ndev: net device
987 *@h: ae handle
988 * Return 0 on success, negative on failure
989 */
990int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h)
991{
992 struct hns_nic_priv *priv = netdev_priv(ndev);
993 struct phy_device *phy_dev = NULL;
994
995 if (!h->phy_node)
996 return 0;
997
998 if (h->phy_if != PHY_INTERFACE_MODE_XGMII)
999 phy_dev = of_phy_connect(ndev, h->phy_node,
1000 hns_nic_adjust_link, 0, h->phy_if);
1001 else
1002 phy_dev = of_phy_attach(ndev, h->phy_node, 0, h->phy_if);
1003
1004 if (unlikely(!phy_dev) || IS_ERR(phy_dev))
1005 return !phy_dev ? -ENODEV : PTR_ERR(phy_dev);
1006
1007 phy_dev->supported &= h->if_support;
1008 phy_dev->advertising = phy_dev->supported;
1009
1010 if (h->phy_if == PHY_INTERFACE_MODE_XGMII)
1011 phy_dev->autoneg = false;
1012
1013 priv->phy = phy_dev;
1014
1015 return 0;
1016}
1017
1018static int hns_nic_ring_open(struct net_device *netdev, int idx)
1019{
1020 struct hns_nic_priv *priv = netdev_priv(netdev);
1021 struct hnae_handle *h = priv->ae_handle;
1022
1023 napi_enable(&priv->ring_data[idx].napi);
1024
1025 enable_irq(priv->ring_data[idx].ring->irq);
1026 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0);
1027
1028 return 0;
1029}
1030
1031static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p)
1032{
1033 struct hns_nic_priv *priv = netdev_priv(ndev);
1034 struct hnae_handle *h = priv->ae_handle;
1035 struct sockaddr *mac_addr = p;
1036 int ret;
1037
1038 if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
1039 return -EADDRNOTAVAIL;
1040
1041 ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data);
1042 if (ret) {
1043 netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret);
1044 return ret;
1045 }
1046
1047 memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len);
1048
1049 return 0;
1050}
1051
1052void hns_nic_update_stats(struct net_device *netdev)
1053{
1054 struct hns_nic_priv *priv = netdev_priv(netdev);
1055 struct hnae_handle *h = priv->ae_handle;
1056
1057 h->dev->ops->update_stats(h, &netdev->stats);
1058}
1059
1060/* set mac addr if it is configed. or leave it to the AE driver */
1061static void hns_init_mac_addr(struct net_device *ndev)
1062{
1063 struct hns_nic_priv *priv = netdev_priv(ndev);
1064 struct device_node *node = priv->dev->of_node;
1065 const void *mac_addr_temp;
1066
1067 mac_addr_temp = of_get_mac_address(node);
1068 if (mac_addr_temp && is_valid_ether_addr(mac_addr_temp)) {
1069 memcpy(ndev->dev_addr, mac_addr_temp, ndev->addr_len);
1070 } else {
1071 eth_hw_addr_random(ndev);
1072 dev_warn(priv->dev, "No valid mac, use random mac %pM",
1073 ndev->dev_addr);
1074 }
1075}
1076
1077static void hns_nic_ring_close(struct net_device *netdev, int idx)
1078{
1079 struct hns_nic_priv *priv = netdev_priv(netdev);
1080 struct hnae_handle *h = priv->ae_handle;
1081
1082 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1);
1083 disable_irq(priv->ring_data[idx].ring->irq);
1084
1085 napi_disable(&priv->ring_data[idx].napi);
1086}
1087
13ac695e 1088static void hns_set_irq_affinity(struct hns_nic_priv *priv)
b5996f11 1089{
1090 struct hnae_handle *h = priv->ae_handle;
1091 struct hns_nic_ring_data *rd;
1092 int i;
b5996f11 1093 int cpu;
1094 cpumask_t mask;
1095
13ac695e
S		 1096 /*diffrent irq banlance for 16core and 32core*/
1097 if (h->q_num == num_possible_cpus()) {
1098 for (i = 0; i < h->q_num * 2; i++) {
1099 rd = &priv->ring_data[i];
1100 if (cpu_online(rd->queue_index)) {
1101 cpumask_clear(&mask);
1102 cpu = rd->queue_index;
1103 cpumask_set_cpu(cpu, &mask);
1104 (void)irq_set_affinity_hint(rd->ring->irq,
1105 &mask);
1106 }
1107 }
1108 } else {
1109 for (i = 0; i < h->q_num; i++) {
1110 rd = &priv->ring_data[i];
1111 if (cpu_online(rd->queue_index * 2)) {
1112 cpumask_clear(&mask);
1113 cpu = rd->queue_index * 2;
1114 cpumask_set_cpu(cpu, &mask);
1115 (void)irq_set_affinity_hint(rd->ring->irq,
1116 &mask);
1117 }
1118 }
1119
1120 for (i = h->q_num; i < h->q_num * 2; i++) {
1121 rd = &priv->ring_data[i];
1122 if (cpu_online(rd->queue_index * 2 + 1)) {
1123 cpumask_clear(&mask);
1124 cpu = rd->queue_index * 2 + 1;
1125 cpumask_set_cpu(cpu, &mask);
1126 (void)irq_set_affinity_hint(rd->ring->irq,
1127 &mask);
1128 }
1129 }
1130 }
1131}
1132
1133static int hns_nic_init_irq(struct hns_nic_priv *priv)
1134{
1135 struct hnae_handle *h = priv->ae_handle;
1136 struct hns_nic_ring_data *rd;
1137 int i;
1138 int ret;
1139
b5996f11 1140 for (i = 0; i < h->q_num * 2; i++) {
1141 rd = &priv->ring_data[i];
1142
1143 if (rd->ring->irq_init_flag == RCB_IRQ_INITED)
1144 break;
1145
1146 snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN,
1147 "%s-%s%d", priv->netdev->name,
1148 (i < h->q_num ? "tx" : "rx"), rd->queue_index);
1149
1150 rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0';
1151
1152 ret = request_irq(rd->ring->irq,
1153 hns_irq_handle, 0, rd->ring->ring_name, rd);
1154 if (ret) {
1155 netdev_err(priv->netdev, "request irq(%d) fail\n",
1156 rd->ring->irq);
1157 return ret;
1158 }
1159 disable_irq(rd->ring->irq);
1160 rd->ring->irq_init_flag = RCB_IRQ_INITED;
b5996f11 1161 }
1162
13ac695e
S		 1163 /*set cpu affinity*/
1164 hns_set_irq_affinity(priv);
1165
b5996f11 1166 return 0;
1167}
1168
1169static int hns_nic_net_up(struct net_device *ndev)
1170{
1171 struct hns_nic_priv *priv = netdev_priv(ndev);
1172 struct hnae_handle *h = priv->ae_handle;
1173 int i, j, k;
1174 int ret;
1175
1176 ret = hns_nic_init_irq(priv);
1177 if (ret != 0) {
1178 netdev_err(ndev, "hns init irq failed! ret=%d\n", ret);
1179 return ret;
1180 }
1181
1182 for (i = 0; i < h->q_num * 2; i++) {
1183 ret = hns_nic_ring_open(ndev, i);
1184 if (ret)
1185 goto out_has_some_queues;
1186 }
1187
1188 for (k = 0; k < h->q_num; k++)
1189 h->dev->ops->toggle_queue_status(h->qs[k], 1);
1190
1191 ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr);
1192 if (ret)
1193 goto out_set_mac_addr_err;
1194
1195 ret = h->dev->ops->start ? h->dev->ops->start(h) : 0;
1196 if (ret)
1197 goto out_start_err;
1198
1199 if (priv->phy)
1200 phy_start(priv->phy);
1201
1202 clear_bit(NIC_STATE_DOWN, &priv->state);
1203 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
1204
1205 return 0;
1206
1207out_start_err:
1208 netif_stop_queue(ndev);
1209out_set_mac_addr_err:
1210 for (k = 0; k < h->q_num; k++)
1211 h->dev->ops->toggle_queue_status(h->qs[k], 0);
1212out_has_some_queues:
1213 for (j = i - 1; j >= 0; j--)
1214 hns_nic_ring_close(ndev, j);
1215
1216 set_bit(NIC_STATE_DOWN, &priv->state);
1217
1218 return ret;
1219}
1220
1221static void hns_nic_net_down(struct net_device *ndev)
1222{
1223 int i;
1224 struct hnae_ae_ops *ops;
1225 struct hns_nic_priv *priv = netdev_priv(ndev);
1226
1227 if (test_and_set_bit(NIC_STATE_DOWN, &priv->state))
1228 return;
1229
1230 (void)del_timer_sync(&priv->service_timer);
1231 netif_tx_stop_all_queues(ndev);
1232 netif_carrier_off(ndev);
1233 netif_tx_disable(ndev);
1234 priv->link = 0;
1235
1236 if (priv->phy)
1237 phy_stop(priv->phy);
1238
1239 ops = priv->ae_handle->dev->ops;
1240
1241 if (ops->stop)
1242 ops->stop(priv->ae_handle);
1243
1244 netif_tx_stop_all_queues(ndev);
1245
1246 for (i = priv->ae_handle->q_num - 1; i >= 0; i--) {
1247 hns_nic_ring_close(ndev, i);
1248 hns_nic_ring_close(ndev, i + priv->ae_handle->q_num);
1249
1250 /* clean tx buffers*/
1251 hns_nic_tx_clr_all_bufs(priv->ring_data + i);
1252 }
1253}
1254
1255void hns_nic_net_reset(struct net_device *ndev)
1256{
1257 struct hns_nic_priv *priv = netdev_priv(ndev);
1258 struct hnae_handle *handle = priv->ae_handle;
1259
1260 while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state))
1261 usleep_range(1000, 2000);
1262
1263 (void)hnae_reinit_handle(handle);
1264
1265 clear_bit(NIC_STATE_RESETTING, &priv->state);
1266}
1267
1268void hns_nic_net_reinit(struct net_device *netdev)
1269{
1270 struct hns_nic_priv *priv = netdev_priv(netdev);
1271
1272 priv->netdev->trans_start = jiffies;
1273 while (test_and_set_bit(NIC_STATE_REINITING, &priv->state))
1274 usleep_range(1000, 2000);
1275
1276 hns_nic_net_down(netdev);
1277 hns_nic_net_reset(netdev);
1278 (void)hns_nic_net_up(netdev);
1279 clear_bit(NIC_STATE_REINITING, &priv->state);
1280}
1281
1282static int hns_nic_net_open(struct net_device *ndev)
1283{
1284 struct hns_nic_priv *priv = netdev_priv(ndev);
1285 struct hnae_handle *h = priv->ae_handle;
1286 int ret;
1287
1288 if (test_bit(NIC_STATE_TESTING, &priv->state))
1289 return -EBUSY;
1290
1291 priv->link = 0;
1292 netif_carrier_off(ndev);
1293
1294 ret = netif_set_real_num_tx_queues(ndev, h->q_num);
1295 if (ret < 0) {
1296 netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n",
1297 ret);
1298 return ret;
1299 }
1300
1301 ret = netif_set_real_num_rx_queues(ndev, h->q_num);
1302 if (ret < 0) {
1303 netdev_err(ndev,
1304 "netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
1305 return ret;
1306 }
1307
1308 ret = hns_nic_net_up(ndev);
1309 if (ret) {
1310 netdev_err(ndev,
1311 "hns net up fail, ret=%d!\n", ret);
1312 return ret;
1313 }
1314
1315 return 0;
1316}
1317
1318static int hns_nic_net_stop(struct net_device *ndev)
1319{
1320 hns_nic_net_down(ndev);
1321
1322 return 0;
1323}
1324
1325static void hns_tx_timeout_reset(struct hns_nic_priv *priv);
1326static void hns_nic_net_timeout(struct net_device *ndev)
1327{
1328 struct hns_nic_priv *priv = netdev_priv(ndev);
1329
1330 hns_tx_timeout_reset(priv);
1331}
1332
1333static int hns_nic_do_ioctl(struct net_device *netdev, struct ifreq *ifr,
1334 int cmd)
1335{
1336 struct hns_nic_priv *priv = netdev_priv(netdev);
1337 struct phy_device *phy_dev = priv->phy;
1338
1339 if (!netif_running(netdev))
1340 return -EINVAL;
1341
1342 if (!phy_dev)
1343 return -ENOTSUPP;
1344
1345 return phy_mii_ioctl(phy_dev, ifr, cmd);
1346}
1347
1348/* use only for netconsole to poll with the device without interrupt */
1349#ifdef CONFIG_NET_POLL_CONTROLLER
1350void hns_nic_poll_controller(struct net_device *ndev)
1351{
1352 struct hns_nic_priv *priv = netdev_priv(ndev);
1353 unsigned long flags;
1354 int i;
1355
1356 local_irq_save(flags);
1357 for (i = 0; i < priv->ae_handle->q_num * 2; i++)
1358 napi_schedule(&priv->ring_data[i].napi);
1359 local_irq_restore(flags);
1360}
1361#endif
1362
1363static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb,
1364 struct net_device *ndev)
1365{
1366 struct hns_nic_priv *priv = netdev_priv(ndev);
1367 int ret;
1368
1369 assert(skb->queue_mapping < ndev->ae_handle->q_num);
1370 ret = hns_nic_net_xmit_hw(ndev, skb,
1371 &tx_ring_data(priv, skb->queue_mapping));
1372 if (ret == NETDEV_TX_OK) {
1373 ndev->trans_start = jiffies;
1374 ndev->stats.tx_bytes += skb->len;
1375 ndev->stats.tx_packets++;
1376 }
1377 return (netdev_tx_t)ret;
1378}
1379
1380static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu)
1381{
1382 struct hns_nic_priv *priv = netdev_priv(ndev);
1383 struct hnae_handle *h = priv->ae_handle;
1384 int ret;
1385
1386 /* MTU < 68 is an error and causes problems on some kernels */
1387 if (new_mtu < 68)
1388 return -EINVAL;
1389
1390 if (!h->dev->ops->set_mtu)
1391 return -ENOTSUPP;
1392
1393 if (netif_running(ndev)) {
1394 (void)hns_nic_net_stop(ndev);
1395 msleep(100);
1396
1397 ret = h->dev->ops->set_mtu(h, new_mtu);
1398 if (ret)
1399 netdev_err(ndev, "set mtu fail, return value %d\n",
1400 ret);
1401
1402 if (hns_nic_net_open(ndev))
1403 netdev_err(ndev, "hns net open fail\n");
1404 } else {
1405 ret = h->dev->ops->set_mtu(h, new_mtu);
1406 }
1407
1408 if (!ret)
1409 ndev->mtu = new_mtu;
1410
1411 return ret;
1412}
1413
38f616da
S		 1414static int hns_nic_set_features(struct net_device *netdev,
1415 netdev_features_t features)
1416{
1417 struct hns_nic_priv *priv = netdev_priv(netdev);
1418 struct hnae_handle *h = priv->ae_handle;
1419
1420 switch (priv->enet_ver) {
1421 case AE_VERSION_1:
1422 if (features & (NETIF_F_TSO | NETIF_F_TSO6))
1423 netdev_info(netdev, "enet v1 do not support tso!\n");
1424 break;
1425 default:
1426 if (features & (NETIF_F_TSO | NETIF_F_TSO6)) {
1427 priv->ops.fill_desc = fill_tso_desc;
1428 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
1429 /* The chip only support 7*4096 */
1430 netif_set_gso_max_size(netdev, 7 * 4096);
1431 h->dev->ops->set_tso_stats(h, 1);
1432 } else {
1433 priv->ops.fill_desc = fill_v2_desc;
1434 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1435 h->dev->ops->set_tso_stats(h, 0);
1436 }
1437 break;
1438 }
1439 netdev->features = features;
1440 return 0;
1441}
1442
1443static netdev_features_t hns_nic_fix_features(
1444 struct net_device *netdev, netdev_features_t features)
1445{
1446 struct hns_nic_priv *priv = netdev_priv(netdev);
1447
1448 switch (priv->enet_ver) {
1449 case AE_VERSION_1:
1450 features &= ~(NETIF_F_TSO | NETIF_F_TSO6 |
1451 NETIF_F_HW_VLAN_CTAG_FILTER);
1452 break;
1453 default:
1454 break;
1455 }
1456 return features;
1457}
1458
b5996f11 1459/**
1460 * nic_set_multicast_list - set mutl mac address
1461 * @netdev: net device
1462 * @p: mac address
1463 *
1464 * return void
1465 */
1466void hns_set_multicast_list(struct net_device *ndev)
1467{
1468 struct hns_nic_priv *priv = netdev_priv(ndev);
1469 struct hnae_handle *h = priv->ae_handle;
1470 struct netdev_hw_addr *ha = NULL;
1471
1472 if (!h) {
1473 netdev_err(ndev, "hnae handle is null\n");
1474 return;
1475 }
1476
1477 if (h->dev->ops->set_mc_addr) {
1478 netdev_for_each_mc_addr(ha, ndev)
1479 if (h->dev->ops->set_mc_addr(h, ha->addr))
1480 netdev_err(ndev, "set multicast fail\n");
1481 }
1482}
1483
4568637f 1484void hns_nic_set_rx_mode(struct net_device *ndev)
1485{
1486 struct hns_nic_priv *priv = netdev_priv(ndev);
1487 struct hnae_handle *h = priv->ae_handle;
1488
1489 if (h->dev->ops->set_promisc_mode) {
1490 if (ndev->flags & IFF_PROMISC)
1491 h->dev->ops->set_promisc_mode(h, 1);
1492 else
1493 h->dev->ops->set_promisc_mode(h, 0);
1494 }
1495
1496 hns_set_multicast_list(ndev);
1497}
1498
b5996f11 1499struct rtnl_link_stats64 *hns_nic_get_stats64(struct net_device *ndev,
1500 struct rtnl_link_stats64 *stats)
1501{
1502 int idx = 0;
1503 u64 tx_bytes = 0;
1504 u64 rx_bytes = 0;
1505 u64 tx_pkts = 0;
1506 u64 rx_pkts = 0;
1507 struct hns_nic_priv *priv = netdev_priv(ndev);
1508 struct hnae_handle *h = priv->ae_handle;
1509
1510 for (idx = 0; idx < h->q_num; idx++) {
1511 tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes;
1512 tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts;
1513 rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes;
1514 rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts;
1515 }
1516
1517 stats->tx_bytes = tx_bytes;
1518 stats->tx_packets = tx_pkts;
1519 stats->rx_bytes = rx_bytes;
1520 stats->rx_packets = rx_pkts;
1521
1522 stats->rx_errors = ndev->stats.rx_errors;
1523 stats->multicast = ndev->stats.multicast;
1524 stats->rx_length_errors = ndev->stats.rx_length_errors;
1525 stats->rx_crc_errors = ndev->stats.rx_crc_errors;
1526 stats->rx_missed_errors = ndev->stats.rx_missed_errors;
1527
1528 stats->tx_errors = ndev->stats.tx_errors;
1529 stats->rx_dropped = ndev->stats.rx_dropped;
1530 stats->tx_dropped = ndev->stats.tx_dropped;
1531 stats->collisions = ndev->stats.collisions;
1532 stats->rx_over_errors = ndev->stats.rx_over_errors;
1533 stats->rx_frame_errors = ndev->stats.rx_frame_errors;
1534 stats->rx_fifo_errors = ndev->stats.rx_fifo_errors;
1535 stats->tx_aborted_errors = ndev->stats.tx_aborted_errors;
1536 stats->tx_carrier_errors = ndev->stats.tx_carrier_errors;
1537 stats->tx_fifo_errors = ndev->stats.tx_fifo_errors;
1538 stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors;
1539 stats->tx_window_errors = ndev->stats.tx_window_errors;
1540 stats->rx_compressed = ndev->stats.rx_compressed;
1541 stats->tx_compressed = ndev->stats.tx_compressed;
1542
1543 return stats;
1544}
1545
1546static const struct net_device_ops hns_nic_netdev_ops = {
1547 .ndo_open = hns_nic_net_open,
1548 .ndo_stop = hns_nic_net_stop,
1549 .ndo_start_xmit = hns_nic_net_xmit,
1550 .ndo_tx_timeout = hns_nic_net_timeout,
1551 .ndo_set_mac_address = hns_nic_net_set_mac_address,
1552 .ndo_change_mtu = hns_nic_change_mtu,
1553 .ndo_do_ioctl = hns_nic_do_ioctl,
38f616da
S		 1554 .ndo_set_features = hns_nic_set_features,
1555 .ndo_fix_features = hns_nic_fix_features,
b5996f11 1556 .ndo_get_stats64 = hns_nic_get_stats64,
1557#ifdef CONFIG_NET_POLL_CONTROLLER
1558 .ndo_poll_controller = hns_nic_poll_controller,
1559#endif
4568637f 1560 .ndo_set_rx_mode = hns_nic_set_rx_mode,
b5996f11 1561};
1562
1563static void hns_nic_update_link_status(struct net_device *netdev)
1564{
1565 struct hns_nic_priv *priv = netdev_priv(netdev);
1566
1567 struct hnae_handle *h = priv->ae_handle;
1568 int state = 1;
1569
1570 if (priv->phy) {
1571 if (!genphy_update_link(priv->phy))
1572 state = priv->phy->link;
1573 else
1574 state = 0;
1575 }
1576 state = state && h->dev->ops->get_status(h);
1577
1578 if (state != priv->link) {
1579 if (state) {
1580 netif_carrier_on(netdev);
1581 netif_tx_wake_all_queues(netdev);
1582 netdev_info(netdev, "link up\n");
1583 } else {
1584 netif_carrier_off(netdev);
1585 netdev_info(netdev, "link down\n");
1586 }
1587 priv->link = state;
1588 }
1589}
1590
1591/* for dumping key regs*/
1592static void hns_nic_dump(struct hns_nic_priv *priv)
1593{
1594 struct hnae_handle *h = priv->ae_handle;
1595 struct hnae_ae_ops *ops = h->dev->ops;
1596 u32 *data, reg_num, i;
1597
1598 if (ops->get_regs_len && ops->get_regs) {
1599 reg_num = ops->get_regs_len(priv->ae_handle);
1600 reg_num = (reg_num + 3ul) & ~3ul;
1601 data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL);
1602 if (data) {
1603 ops->get_regs(priv->ae_handle, data);
1604 for (i = 0; i < reg_num; i += 4)
1605 pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
1606 i, data[i], data[i + 1],
1607 data[i + 2], data[i + 3]);
1608 kfree(data);
1609 }
1610 }
1611
1612 for (i = 0; i < h->q_num; i++) {
1613 pr_info("tx_queue%d_next_to_clean:%d\n",
1614 i, h->qs[i]->tx_ring.next_to_clean);
1615 pr_info("tx_queue%d_next_to_use:%d\n",
1616 i, h->qs[i]->tx_ring.next_to_use);
1617 pr_info("rx_queue%d_next_to_clean:%d\n",
1618 i, h->qs[i]->rx_ring.next_to_clean);
1619 pr_info("rx_queue%d_next_to_use:%d\n",
1620 i, h->qs[i]->rx_ring.next_to_use);
1621 }
1622}
1623
1624/* for resetting suntask*/
1625static void hns_nic_reset_subtask(struct hns_nic_priv *priv)
1626{
1627 enum hnae_port_type type = priv->ae_handle->port_type;
1628
1629 if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state))
1630 return;
1631 clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
1632
1633 /* If we're already down, removing or resetting, just bail */
1634 if (test_bit(NIC_STATE_DOWN, &priv->state) ||
1635 test_bit(NIC_STATE_REMOVING, &priv->state) ||
1636 test_bit(NIC_STATE_RESETTING, &priv->state))
1637 return;
1638
1639 hns_nic_dump(priv);
13ac695e
S		 1640 netdev_info(priv->netdev, "try to reset %s port!\n",
1641 (type == HNAE_PORT_DEBUG ? "debug" : "service"));
b5996f11 1642
1643 rtnl_lock();
90a505b9 1644 /* put off any impending NetWatchDogTimeout */
1645 priv->netdev->trans_start = jiffies;
1646
13ac695e 1647 if (type == HNAE_PORT_DEBUG) {
b5996f11 1648 hns_nic_net_reinit(priv->netdev);
13ac695e
S		 1649 } else {
1650 netif_carrier_off(priv->netdev);
1651 netif_tx_disable(priv->netdev);
1652 }
b5996f11 1653 rtnl_unlock();
1654}
1655
1656/* for doing service complete*/
1657static void hns_nic_service_event_complete(struct hns_nic_priv *priv)
1658{
13ac695e 1659 WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state));
b5996f11 1660
1661 smp_mb__before_atomic();
1662 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
1663}
1664
1665static void hns_nic_service_task(struct work_struct *work)
1666{
1667 struct hns_nic_priv *priv
1668 = container_of(work, struct hns_nic_priv, service_task);
1669 struct hnae_handle *h = priv->ae_handle;
1670
1671 hns_nic_update_link_status(priv->netdev);
1672 h->dev->ops->update_led_status(h);
1673 hns_nic_update_stats(priv->netdev);
1674
1675 hns_nic_reset_subtask(priv);
1676 hns_nic_service_event_complete(priv);
1677}
1678
1679static void hns_nic_task_schedule(struct hns_nic_priv *priv)
1680{
1681 if (!test_bit(NIC_STATE_DOWN, &priv->state) &&
1682 !test_bit(NIC_STATE_REMOVING, &priv->state) &&
1683 !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state))
1684 (void)schedule_work(&priv->service_task);
1685}
1686
1687static void hns_nic_service_timer(unsigned long data)
1688{
1689 struct hns_nic_priv *priv = (struct hns_nic_priv *)data;
1690
1691 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
1692
1693 hns_nic_task_schedule(priv);
1694}
1695
1696/**
1697 * hns_tx_timeout_reset - initiate reset due to Tx timeout
1698 * @priv: driver private struct
1699 **/
1700static void hns_tx_timeout_reset(struct hns_nic_priv *priv)
1701{
1702 /* Do the reset outside of interrupt context */
1703 if (!test_bit(NIC_STATE_DOWN, &priv->state)) {
1704 set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
1705 netdev_warn(priv->netdev,
1706 "initiating reset due to tx timeout(%llu,0x%lx)\n",
1707 priv->tx_timeout_count, priv->state);
1708 priv->tx_timeout_count++;
1709 hns_nic_task_schedule(priv);
1710 }
1711}
1712
1713static int hns_nic_init_ring_data(struct hns_nic_priv *priv)
1714{
1715 struct hnae_handle *h = priv->ae_handle;
1716 struct hns_nic_ring_data *rd;
1717 int i;
1718
1719 if (h->q_num > NIC_MAX_Q_PER_VF) {
1720 netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num);
1721 return -EINVAL;
1722 }
1723
1724 priv->ring_data = kzalloc(h->q_num * sizeof(*priv->ring_data) * 2,
1725 GFP_KERNEL);
1726 if (!priv->ring_data)
1727 return -ENOMEM;
1728
1729 for (i = 0; i < h->q_num; i++) {
1730 rd = &priv->ring_data[i];
1731 rd->queue_index = i;
1732 rd->ring = &h->qs[i]->tx_ring;
1733 rd->poll_one = hns_nic_tx_poll_one;
1734 rd->fini_process = hns_nic_tx_fini_pro;
1735
1736 netif_napi_add(priv->netdev, &rd->napi,
1737 hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM);
1738 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1739 }
1740 for (i = h->q_num; i < h->q_num * 2; i++) {
1741 rd = &priv->ring_data[i];
1742 rd->queue_index = i - h->q_num;
1743 rd->ring = &h->qs[i - h->q_num]->rx_ring;
1744 rd->poll_one = hns_nic_rx_poll_one;
1745 rd->ex_process = hns_nic_rx_up_pro;
1746 rd->fini_process = hns_nic_rx_fini_pro;
1747
1748 netif_napi_add(priv->netdev, &rd->napi,
1749 hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM);
1750 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1751 }
1752
1753 return 0;
1754}
1755
1756static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv)
1757{
1758 struct hnae_handle *h = priv->ae_handle;
1759 int i;
1760
1761 for (i = 0; i < h->q_num * 2; i++) {
1762 netif_napi_del(&priv->ring_data[i].napi);
1763 if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) {
13ac695e
S		 1764 (void)irq_set_affinity_hint(
1765 priv->ring_data[i].ring->irq,
1766 NULL);
b5996f11 1767 free_irq(priv->ring_data[i].ring->irq,
1768 &priv->ring_data[i]);
1769 }
1770
1771 priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1772 }
1773 kfree(priv->ring_data);
1774}
1775
13ac695e
S		 1776static void hns_nic_set_priv_ops(struct net_device *netdev)
1777{
1778 struct hns_nic_priv *priv = netdev_priv(netdev);
64353af6 1779 struct hnae_handle *h = priv->ae_handle;
13ac695e
S		 1780
1781 if (AE_IS_VER1(priv->enet_ver)) {
1782 priv->ops.fill_desc = fill_desc;
1783 priv->ops.get_rxd_bnum = get_rx_desc_bnum;
1784 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1785 } else {
1786 priv->ops.get_rxd_bnum = get_v2rx_desc_bnum;
64353af6
S		 1787 if ((netdev->features & NETIF_F_TSO) ||
1788 (netdev->features & NETIF_F_TSO6)) {
1789 priv->ops.fill_desc = fill_tso_desc;
1790 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
1791 /* This chip only support 7*4096 */
1792 netif_set_gso_max_size(netdev, 7 * 4096);
1793 h->dev->ops->set_tso_stats(h, 1);
1794 } else {
1795 priv->ops.fill_desc = fill_v2_desc;
1796 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1797 }
13ac695e
S		 1798 }
1799}
1800
b5996f11 1801static int hns_nic_try_get_ae(struct net_device *ndev)
1802{
1803 struct hns_nic_priv *priv = netdev_priv(ndev);
1804 struct hnae_handle *h;
1805 int ret;
1806
1807 h = hnae_get_handle(&priv->netdev->dev,
1808 priv->ae_name, priv->port_id, NULL);
1809 if (IS_ERR_OR_NULL(h)) {
1810 ret = PTR_ERR(h);
1811 dev_dbg(priv->dev, "has not handle, register notifier!\n");
1812 goto out;
1813 }
1814 priv->ae_handle = h;
1815
1816 ret = hns_nic_init_phy(ndev, h);
1817 if (ret) {
1818 dev_err(priv->dev, "probe phy device fail!\n");
1819 goto out_init_phy;
1820 }
1821
1822 ret = hns_nic_init_ring_data(priv);
1823 if (ret) {
1824 ret = -ENOMEM;
1825 goto out_init_ring_data;
1826 }
1827
13ac695e
S		 1828 hns_nic_set_priv_ops(ndev);
1829
b5996f11 1830 ret = register_netdev(ndev);
1831 if (ret) {
1832 dev_err(priv->dev, "probe register netdev fail!\n");
1833 goto out_reg_ndev_fail;
1834 }
1835 return 0;
1836
1837out_reg_ndev_fail:
1838 hns_nic_uninit_ring_data(priv);
1839 priv->ring_data = NULL;
1840out_init_phy:
1841out_init_ring_data:
1842 hnae_put_handle(priv->ae_handle);
1843 priv->ae_handle = NULL;
1844out:
1845 return ret;
1846}
1847
1848static int hns_nic_notifier_action(struct notifier_block *nb,
1849 unsigned long action, void *data)
1850{
1851 struct hns_nic_priv *priv =
1852 container_of(nb, struct hns_nic_priv, notifier_block);
1853
1854 assert(action == HNAE_AE_REGISTER);
1855
1856 if (!hns_nic_try_get_ae(priv->netdev)) {
1857 hnae_unregister_notifier(&priv->notifier_block);
1858 priv->notifier_block.notifier_call = NULL;
1859 }
1860 return 0;
1861}
1862
1863static int hns_nic_dev_probe(struct platform_device *pdev)
1864{
1865 struct device *dev = &pdev->dev;
1866 struct net_device *ndev;
1867 struct hns_nic_priv *priv;
1868 struct device_node *node = dev->of_node;
1869 int ret;
1870
1871 ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF);
1872 if (!ndev)
1873 return -ENOMEM;
1874
1875 platform_set_drvdata(pdev, ndev);
1876
1877 priv = netdev_priv(ndev);
1878 priv->dev = dev;
1879 priv->netdev = ndev;
1880
13ac695e 1881 if (of_device_is_compatible(node, "hisilicon,hns-nic-v1"))
b5996f11 1882 priv->enet_ver = AE_VERSION_1;
13ac695e
S		 1883 else
1884 priv->enet_ver = AE_VERSION_2;
b5996f11 1885
1886 ret = of_property_read_string(node, "ae-name", &priv->ae_name);
1887 if (ret)
1888 goto out_read_string_fail;
1889
1890 ret = of_property_read_u32(node, "port-id", &priv->port_id);
1891 if (ret)
1892 goto out_read_string_fail;
1893
1894 hns_init_mac_addr(ndev);
1895
1896 ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT;
1897 ndev->priv_flags |= IFF_UNICAST_FLT;
1898 ndev->netdev_ops = &hns_nic_netdev_ops;
1899 hns_ethtool_set_ops(ndev);
13ac695e 1900
b5996f11 1901 ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1902 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
1903 NETIF_F_GRO;
1904 ndev->vlan_features |=
1905 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM;
1906 ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO;
1907
13ac695e
S		 1908 switch (priv->enet_ver) {
1909 case AE_VERSION_2:
64353af6 1910 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
13ac695e
S		 1911 ndev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1912 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
64353af6 1913 NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6;
13ac695e
S		 1914 break;
1915 default:
1916 break;
1917 }
1918
b5996f11 1919 SET_NETDEV_DEV(ndev, dev);
1920
1921 if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)))
1922 dev_dbg(dev, "set mask to 64bit\n");
1923 else
1924 dev_err(dev, "set mask to 32bit fail!\n");
1925
1926 /* carrier off reporting is important to ethtool even BEFORE open */
1927 netif_carrier_off(ndev);
1928
1929 setup_timer(&priv->service_timer, hns_nic_service_timer,
1930 (unsigned long)priv);
1931 INIT_WORK(&priv->service_task, hns_nic_service_task);
1932
1933 set_bit(NIC_STATE_SERVICE_INITED, &priv->state);
1934 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
1935 set_bit(NIC_STATE_DOWN, &priv->state);
1936
1937 if (hns_nic_try_get_ae(priv->netdev)) {
1938 priv->notifier_block.notifier_call = hns_nic_notifier_action;
1939 ret = hnae_register_notifier(&priv->notifier_block);
1940 if (ret) {
1941 dev_err(dev, "register notifier fail!\n");
1942 goto out_notify_fail;
1943 }
1944 dev_dbg(dev, "has not handle, register notifier!\n");
1945 }
1946
1947 return 0;
1948
1949out_notify_fail:
1950 (void)cancel_work_sync(&priv->service_task);
1951out_read_string_fail:
1952 free_netdev(ndev);
1953 return ret;
1954}
1955
1956static int hns_nic_dev_remove(struct platform_device *pdev)
1957{
1958 struct net_device *ndev = platform_get_drvdata(pdev);
1959 struct hns_nic_priv *priv = netdev_priv(ndev);
1960
1961 if (ndev->reg_state != NETREG_UNINITIALIZED)
1962 unregister_netdev(ndev);
1963
1964 if (priv->ring_data)
1965 hns_nic_uninit_ring_data(priv);
1966 priv->ring_data = NULL;
1967
1968 if (priv->phy)
1969 phy_disconnect(priv->phy);
1970 priv->phy = NULL;
1971
1972 if (!IS_ERR_OR_NULL(priv->ae_handle))
1973 hnae_put_handle(priv->ae_handle);
1974 priv->ae_handle = NULL;
1975 if (priv->notifier_block.notifier_call)
1976 hnae_unregister_notifier(&priv->notifier_block);
1977 priv->notifier_block.notifier_call = NULL;
1978
1979 set_bit(NIC_STATE_REMOVING, &priv->state);
1980 (void)cancel_work_sync(&priv->service_task);
1981
1982 free_netdev(ndev);
1983 return 0;
1984}
1985
1986static const struct of_device_id hns_enet_of_match[] = {
1987 {.compatible = "hisilicon,hns-nic-v1",},
1988 {.compatible = "hisilicon,hns-nic-v2",},
1989 {},
1990};
1991
1992MODULE_DEVICE_TABLE(of, hns_enet_of_match);
1993
1994static struct platform_driver hns_nic_dev_driver = {
1995 .driver = {
1996 .name = "hns-nic",
b5996f11 1997 .of_match_table = hns_enet_of_match,
1998 },
1999 .probe = hns_nic_dev_probe,
2000 .remove = hns_nic_dev_remove,
2001};
2002
2003module_platform_driver(hns_nic_dev_driver);
2004
2005MODULE_DESCRIPTION("HISILICON HNS Ethernet driver");
2006MODULE_AUTHOR("Hisilicon, Inc.");
2007MODULE_LICENSE("GPL");
2008MODULE_ALIAS("platform:hns-nic");
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