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[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;
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
b5996f11 135static void fill_desc(struct hnae_ring *ring, void *priv,
136 int size, dma_addr_t dma, int frag_end,
13ac695e 137 int buf_num, enum hns_desc_type type, int mtu)
b5996f11 138{
139 struct hnae_desc *desc = &ring->desc[ring->next_to_use];
140 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
141 struct sk_buff *skb;
142 __be16 protocol;
143 u32 ip_offset;
144 u32 asid_bufnum_pid = 0;
145 u32 flag_ipoffset = 0;
146
147 desc_cb->priv = priv;
148 desc_cb->length = size;
149 desc_cb->dma = dma;
150 desc_cb->type = type;
151
152 desc->addr = cpu_to_le64(dma);
153 desc->tx.send_size = cpu_to_le16((u16)size);
154
155 /*config bd buffer end */
156 flag_ipoffset |= 1 << HNS_TXD_VLD_B;
157
158 asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S;
159
160 if (type == DESC_TYPE_SKB) {
161 skb = (struct sk_buff *)priv;
162
163 if (skb->ip_summed == CHECKSUM_PARTIAL) {
164 protocol = skb->protocol;
165 ip_offset = ETH_HLEN;
166
167 /*if it is a SW VLAN check the next protocol*/
168 if (protocol == htons(ETH_P_8021Q)) {
169 ip_offset += VLAN_HLEN;
170 protocol = vlan_get_protocol(skb);
171 skb->protocol = protocol;
172 }
173
174 if (skb->protocol == htons(ETH_P_IP)) {
175 flag_ipoffset |= 1 << HNS_TXD_L3CS_B;
176 /* check for tcp/udp header */
177 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
178
179 } else if (skb->protocol == htons(ETH_P_IPV6)) {
180 /* ipv6 has not l3 cs, check for L4 header */
181 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
182 }
183
184 flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S;
185 }
186 }
187
188 flag_ipoffset |= frag_end << HNS_TXD_FE_B;
189
190 desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid);
191 desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset);
192
193 ring_ptr_move_fw(ring, next_to_use);
194}
195
196static void unfill_desc(struct hnae_ring *ring)
197{
198 ring_ptr_move_bw(ring, next_to_use);
199}
200
13ac695e
S		 201static int hns_nic_maybe_stop_tx(
202 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
b5996f11 203{
13ac695e
S		 204 struct sk_buff *skb = *out_skb;
205 struct sk_buff *new_skb = NULL;
b5996f11 206 int buf_num;
b5996f11 207
208 /* no. of segments (plus a header) */
209 buf_num = skb_shinfo(skb)->nr_frags + 1;
210
211 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
13ac695e
S		 212 if (ring_space(ring) < 1)
213 return -EBUSY;
b5996f11 214
215 new_skb = skb_copy(skb, GFP_ATOMIC);
13ac695e
S		 216 if (!new_skb)
217 return -ENOMEM;
b5996f11 218
219 dev_kfree_skb_any(skb);
13ac695e 220 *out_skb = new_skb;
b5996f11 221 buf_num = 1;
b5996f11 222 } else if (buf_num > ring_space(ring)) {
13ac695e
S		 223 return -EBUSY;
224 }
225
226 *bnum = buf_num;
227 return 0;
228}
229
64353af6
S		 230static int hns_nic_maybe_stop_tso(
231 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
232{
233 int i;
234 int size;
235 int buf_num;
236 int frag_num;
237 struct sk_buff *skb = *out_skb;
238 struct sk_buff *new_skb = NULL;
239 struct skb_frag_struct *frag;
240
241 size = skb_headlen(skb);
242 buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
243
244 frag_num = skb_shinfo(skb)->nr_frags;
245 for (i = 0; i < frag_num; i++) {
246 frag = &skb_shinfo(skb)->frags[i];
247 size = skb_frag_size(frag);
248 buf_num += (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
249 }
250
251 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
252 buf_num = (skb->len + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
253 if (ring_space(ring) < buf_num)
254 return -EBUSY;
255 /* manual split the send packet */
256 new_skb = skb_copy(skb, GFP_ATOMIC);
257 if (!new_skb)
258 return -ENOMEM;
259 dev_kfree_skb_any(skb);
260 *out_skb = new_skb;
261
262 } else if (ring_space(ring) < buf_num) {
263 return -EBUSY;
264 }
265
266 *bnum = buf_num;
267 return 0;
268}
269
270static void fill_tso_desc(struct hnae_ring *ring, void *priv,
271 int size, dma_addr_t dma, int frag_end,
272 int buf_num, enum hns_desc_type type, int mtu)
273{
274 int frag_buf_num;
275 int sizeoflast;
276 int k;
277
278 frag_buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
279 sizeoflast = size % BD_MAX_SEND_SIZE;
280 sizeoflast = sizeoflast ? sizeoflast : BD_MAX_SEND_SIZE;
281
282 /* when the frag size is bigger than hardware, split this frag */
283 for (k = 0; k < frag_buf_num; k++)
284 fill_v2_desc(ring, priv,
285 (k == frag_buf_num - 1) ?
286 sizeoflast : BD_MAX_SEND_SIZE,
287 dma + BD_MAX_SEND_SIZE * k,
288 frag_end && (k == frag_buf_num - 1) ? 1 : 0,
289 buf_num,
290 (type == DESC_TYPE_SKB && !k) ?
291 DESC_TYPE_SKB : DESC_TYPE_PAGE,
292 mtu);
293}
294
13ac695e
S		 295int hns_nic_net_xmit_hw(struct net_device *ndev,
296 struct sk_buff *skb,
297 struct hns_nic_ring_data *ring_data)
298{
299 struct hns_nic_priv *priv = netdev_priv(ndev);
300 struct device *dev = priv->dev;
301 struct hnae_ring *ring = ring_data->ring;
302 struct netdev_queue *dev_queue;
303 struct skb_frag_struct *frag;
304 int buf_num;
305 int seg_num;
306 dma_addr_t dma;
307 int size, next_to_use;
308 int i;
309
310 switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) {
311 case -EBUSY:
b5996f11 312 ring->stats.tx_busy++;
313 goto out_net_tx_busy;
13ac695e
S		 314 case -ENOMEM:
315 ring->stats.sw_err_cnt++;
316 netdev_err(ndev, "no memory to xmit!\n");
317 goto out_err_tx_ok;
318 default:
319 break;
b5996f11 320 }
13ac695e
S		 321
322 /* no. of segments (plus a header) */
323 seg_num = skb_shinfo(skb)->nr_frags + 1;
b5996f11 324 next_to_use = ring->next_to_use;
325
326 /* fill the first part */
327 size = skb_headlen(skb);
328 dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE);
329 if (dma_mapping_error(dev, dma)) {
330 netdev_err(ndev, "TX head DMA map failed\n");
331 ring->stats.sw_err_cnt++;
332 goto out_err_tx_ok;
333 }
13ac695e
S		 334 priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0,
335 buf_num, DESC_TYPE_SKB, ndev->mtu);
b5996f11 336
337 /* fill the fragments */
13ac695e 338 for (i = 1; i < seg_num; i++) {
b5996f11 339 frag = &skb_shinfo(skb)->frags[i - 1];
340 size = skb_frag_size(frag);
341 dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
342 if (dma_mapping_error(dev, dma)) {
343 netdev_err(ndev, "TX frag(%d) DMA map failed\n", i);
344 ring->stats.sw_err_cnt++;
345 goto out_map_frag_fail;
346 }
13ac695e
S		 347 priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma,
348 seg_num - 1 == i ? 1 : 0, buf_num,
349 DESC_TYPE_PAGE, ndev->mtu);
b5996f11 350 }
351
352 /*complete translate all packets*/
353 dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping);
354 netdev_tx_sent_queue(dev_queue, skb->len);
355
356 wmb(); /* commit all data before submit */
357 assert(skb->queue_mapping < priv->ae_handle->q_num);
358 hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num);
359 ring->stats.tx_pkts++;
360 ring->stats.tx_bytes += skb->len;
361
362 return NETDEV_TX_OK;
363
364out_map_frag_fail:
365
13ac695e 366 while (ring->next_to_use != next_to_use) {
b5996f11 367 unfill_desc(ring);
13ac695e
S		 368 if (ring->next_to_use != next_to_use)
369 dma_unmap_page(dev,
370 ring->desc_cb[ring->next_to_use].dma,
371 ring->desc_cb[ring->next_to_use].length,
372 DMA_TO_DEVICE);
373 else
374 dma_unmap_single(dev,
375 ring->desc_cb[next_to_use].dma,
376 ring->desc_cb[next_to_use].length,
377 DMA_TO_DEVICE);
b5996f11 378 }
379
b5996f11 380out_err_tx_ok:
381
382 dev_kfree_skb_any(skb);
383 return NETDEV_TX_OK;
384
385out_net_tx_busy:
386
387 netif_stop_subqueue(ndev, skb->queue_mapping);
388
389 /* Herbert's original patch had:
390 * smp_mb__after_netif_stop_queue();
391 * but since that doesn't exist yet, just open code it.
392 */
393 smp_mb();
394 return NETDEV_TX_BUSY;
395}
396
397/**
398 * hns_nic_get_headlen - determine size of header for RSC/LRO/GRO/FCOE
399 * @data: pointer to the start of the headers
400 * @max: total length of section to find headers in
401 *
402 * This function is meant to determine the length of headers that will
403 * be recognized by hardware for LRO, GRO, and RSC offloads. The main
404 * motivation of doing this is to only perform one pull for IPv4 TCP
405 * packets so that we can do basic things like calculating the gso_size
406 * based on the average data per packet.
407 **/
408static unsigned int hns_nic_get_headlen(unsigned char *data, u32 flag,
409 unsigned int max_size)
410{
411 unsigned char *network;
412 u8 hlen;
413
414 /* this should never happen, but better safe than sorry */
415 if (max_size < ETH_HLEN)
416 return max_size;
417
418 /* initialize network frame pointer */
419 network = data;
420
421 /* set first protocol and move network header forward */
422 network += ETH_HLEN;
423
424 /* handle any vlan tag if present */
425 if (hnae_get_field(flag, HNS_RXD_VLAN_M, HNS_RXD_VLAN_S)
426 == HNS_RX_FLAG_VLAN_PRESENT) {
427 if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN))
428 return max_size;
429
430 network += VLAN_HLEN;
431 }
432
433 /* handle L3 protocols */
434 if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S)
435 == HNS_RX_FLAG_L3ID_IPV4) {
436 if ((typeof(max_size))(network - data) >
437 (max_size - sizeof(struct iphdr)))
438 return max_size;
439
440 /* access ihl as a u8 to avoid unaligned access on ia64 */
441 hlen = (network[0] & 0x0F) << 2;
442
443 /* verify hlen meets minimum size requirements */
444 if (hlen < sizeof(struct iphdr))
445 return network - data;
446
447 /* record next protocol if header is present */
448 } else if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S)
449 == HNS_RX_FLAG_L3ID_IPV6) {
450 if ((typeof(max_size))(network - data) >
451 (max_size - sizeof(struct ipv6hdr)))
452 return max_size;
453
454 /* record next protocol */
455 hlen = sizeof(struct ipv6hdr);
456 } else {
457 return network - data;
458 }
459
460 /* relocate pointer to start of L4 header */
461 network += hlen;
462
463 /* finally sort out TCP/UDP */
464 if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S)
465 == HNS_RX_FLAG_L4ID_TCP) {
466 if ((typeof(max_size))(network - data) >
467 (max_size - sizeof(struct tcphdr)))
468 return max_size;
469
470 /* access doff as a u8 to avoid unaligned access on ia64 */
471 hlen = (network[12] & 0xF0) >> 2;
472
473 /* verify hlen meets minimum size requirements */
474 if (hlen < sizeof(struct tcphdr))
475 return network - data;
476
477 network += hlen;
478 } else if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S)
479 == HNS_RX_FLAG_L4ID_UDP) {
480 if ((typeof(max_size))(network - data) >
481 (max_size - sizeof(struct udphdr)))
482 return max_size;
483
484 network += sizeof(struct udphdr);
485 }
486
487 /* If everything has gone correctly network should be the
488 * data section of the packet and will be the end of the header.
489 * If not then it probably represents the end of the last recognized
490 * header.
491 */
492 if ((typeof(max_size))(network - data) < max_size)
493 return network - data;
494 else
495 return max_size;
496}
497
9cbe9fd5 498static void hns_nic_reuse_page(struct sk_buff *skb, int i,
499 struct hnae_ring *ring, int pull_len,
500 struct hnae_desc_cb *desc_cb)
b5996f11 501{
9cbe9fd5 502 struct hnae_desc *desc;
503 int truesize, size;
504 int last_offset;
be78a690
AB		 505 bool twobufs;
506
507 twobufs = ((PAGE_SIZE < 8192) && hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048);
9cbe9fd5 508
509 desc = &ring->desc[ring->next_to_clean];
510 size = le16_to_cpu(desc->rx.size);
511
be78a690 512 if (twobufs) {
9cbe9fd5 513 truesize = hnae_buf_size(ring);
514 } else {
515 truesize = ALIGN(size, L1_CACHE_BYTES);
516 last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
517 }
518
9cbe9fd5 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 */
be78a690
AB		 523 if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id()))
524 return;
525
526 if (twobufs) {
527 /* if we are only owner of page we can reuse it */
528 if (likely(page_count(desc_cb->priv) == 1)) {
529 /* flip page offset to other buffer */
530 desc_cb->page_offset ^= truesize;
b5996f11 531
b5996f11 532 desc_cb->reuse_flag = 1;
533 /* bump ref count on page before it is given*/
534 get_page(desc_cb->priv);
535 }
be78a690
AB		 536 return;
537 }
538
539 /* move offset up to the next cache line */
540 desc_cb->page_offset += truesize;
541
542 if (desc_cb->page_offset <= last_offset) {
543 desc_cb->reuse_flag = 1;
544 /* bump ref count on page before it is given*/
545 get_page(desc_cb->priv);
b5996f11 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;
0d6b425a 570 struct ethhdr *eh;
b5996f11 571 unsigned char *va;
9cbe9fd5 572 int bnum, length, i;
b5996f11 573 int pull_len;
574 u32 bnum_flag;
575
b5996f11 576 desc = &ring->desc[ring->next_to_clean];
577 desc_cb = &ring->desc_cb[ring->next_to_clean];
13ac695e
S		 578
579 prefetch(desc);
580
b5996f11 581 va = (unsigned char *)desc_cb->buf + desc_cb->page_offset;
582
13ac695e
S		 583 /* prefetch first cache line of first page */
584 prefetch(va);
585#if L1_CACHE_BYTES < 128
586 prefetch(va + L1_CACHE_BYTES);
587#endif
588
589 skb = *out_skb = napi_alloc_skb(&ring_data->napi,
590 HNS_RX_HEAD_SIZE);
b5996f11 591 if (unlikely(!skb)) {
592 netdev_err(ndev, "alloc rx skb fail\n");
593 ring->stats.sw_err_cnt++;
594 return -ENOMEM;
595 }
596
9cbe9fd5 597 prefetchw(skb->data);
13ac695e
S		 598 length = le16_to_cpu(desc->rx.pkt_len);
599 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
600 priv->ops.get_rxd_bnum(bnum_flag, &bnum);
601 *out_bnum = bnum;
602
b5996f11 603 if (length <= HNS_RX_HEAD_SIZE) {
604 memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
605
606 /* we can reuse buffer as-is, just make sure it is local */
607 if (likely(page_to_nid(desc_cb->priv) == numa_node_id()))
608 desc_cb->reuse_flag = 1;
609 else /* this page cannot be reused so discard it */
610 put_page(desc_cb->priv);
611
612 ring_ptr_move_fw(ring, next_to_clean);
613
614 if (unlikely(bnum != 1)) { /* check err*/
615 *out_bnum = 1;
616 goto out_bnum_err;
617 }
618 } else {
619 ring->stats.seg_pkt_cnt++;
620
621 pull_len = hns_nic_get_headlen(va, bnum_flag, HNS_RX_HEAD_SIZE);
622 memcpy(__skb_put(skb, pull_len), va,
623 ALIGN(pull_len, sizeof(long)));
624
9cbe9fd5 625 hns_nic_reuse_page(skb, 0, ring, pull_len, desc_cb);
b5996f11 626 ring_ptr_move_fw(ring, next_to_clean);
627
628 if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/
629 *out_bnum = 1;
630 goto out_bnum_err;
631 }
632 for (i = 1; i < bnum; i++) {
633 desc = &ring->desc[ring->next_to_clean];
634 desc_cb = &ring->desc_cb[ring->next_to_clean];
b5996f11 635
9cbe9fd5 636 hns_nic_reuse_page(skb, i, ring, 0, desc_cb);
b5996f11 637 ring_ptr_move_fw(ring, next_to_clean);
638 }
639 }
640
641 /* check except process, free skb and jump the desc */
642 if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) {
643out_bnum_err:
644 *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/
645 netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n",
646 bnum, ring->max_desc_num_per_pkt,
647 length, (int)MAX_SKB_FRAGS,
648 ((u64 *)desc)[0], ((u64 *)desc)[1]);
649 ring->stats.err_bd_num++;
650 dev_kfree_skb_any(skb);
651 return -EDOM;
652 }
653
654 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
655
656 if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) {
657 netdev_err(ndev, "no valid bd,%016llx,%016llx\n",
658 ((u64 *)desc)[0], ((u64 *)desc)[1]);
659 ring->stats.non_vld_descs++;
660 dev_kfree_skb_any(skb);
661 return -EINVAL;
662 }
663
664 if (unlikely((!desc->rx.pkt_len) ||
665 hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) {
b5996f11 666 ring->stats.err_pkt_len++;
667 dev_kfree_skb_any(skb);
668 return -EFAULT;
669 }
670
671 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) {
b5996f11 672 ring->stats.l2_err++;
673 dev_kfree_skb_any(skb);
674 return -EFAULT;
675 }
676
0d6b425a
KY		 677 /* filter out multicast pkt with the same src mac as this port */
678 eh = eth_hdr(skb);
679 if (unlikely(is_multicast_ether_addr(eh->h_dest) &&
680 ether_addr_equal(ndev->dev_addr, eh->h_source))) {
681 dev_kfree_skb_any(skb);
682 return -EFAULT;
683 }
684
b5996f11 685 ring->stats.rx_pkts++;
686 ring->stats.rx_bytes += skb->len;
687
688 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L3E_B) ||
689 hnae_get_bit(bnum_flag, HNS_RXD_L4E_B))) {
b5996f11 690 ring->stats.l3l4_csum_err++;
691 return 0;
692 }
693
694 skb->ip_summed = CHECKSUM_UNNECESSARY;
695
696 return 0;
697}
698
699static void
700hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count)
701{
702 int i, ret;
703 struct hnae_desc_cb res_cbs;
704 struct hnae_desc_cb *desc_cb;
705 struct hnae_ring *ring = ring_data->ring;
706 struct net_device *ndev = ring_data->napi.dev;
707
708 for (i = 0; i < cleand_count; i++) {
709 desc_cb = &ring->desc_cb[ring->next_to_use];
710 if (desc_cb->reuse_flag) {
711 ring->stats.reuse_pg_cnt++;
712 hnae_reuse_buffer(ring, ring->next_to_use);
713 } else {
714 ret = hnae_reserve_buffer_map(ring, &res_cbs);
715 if (ret) {
716 ring->stats.sw_err_cnt++;
717 netdev_err(ndev, "hnae reserve buffer map failed.\n");
718 break;
719 }
720 hnae_replace_buffer(ring, ring->next_to_use, &res_cbs);
721 }
722
723 ring_ptr_move_fw(ring, next_to_use);
724 }
725
726 wmb(); /* make all data has been write before submit */
727 writel_relaxed(i, ring->io_base + RCB_REG_HEAD);
728}
729
730/* return error number for error or number of desc left to take
731 */
732static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data,
733 struct sk_buff *skb)
734{
735 struct net_device *ndev = ring_data->napi.dev;
736
737 skb->protocol = eth_type_trans(skb, ndev);
738 (void)napi_gro_receive(&ring_data->napi, skb);
739 ndev->last_rx = jiffies;
740}
741
742static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data,
743 int budget, void *v)
744{
745 struct hnae_ring *ring = ring_data->ring;
746 struct sk_buff *skb;
747 int num, bnum, ex_num;
748#define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
749 int recv_pkts, recv_bds, clean_count, err;
750
751 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
752 rmb(); /* make sure num taken effect before the other data is touched */
753
754 recv_pkts = 0, recv_bds = 0, clean_count = 0;
755recv:
756 while (recv_pkts < budget && recv_bds < num) {
757 /* reuse or realloc buffers*/
758 if (clean_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
759 hns_nic_alloc_rx_buffers(ring_data, clean_count);
760 clean_count = 0;
761 }
762
763 /* poll one pkg*/
764 err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum);
765 if (unlikely(!skb)) /* this fault cannot be repaired */
766 break;
767
768 recv_bds += bnum;
769 clean_count += bnum;
770 if (unlikely(err)) { /* do jump the err */
771 recv_pkts++;
772 continue;
773 }
774
775 /* do update ip stack process*/
776 ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)(
777 ring_data, skb);
778 recv_pkts++;
779 }
780
781 /* make all data has been write before submit */
b5996f11 782 if (recv_pkts < budget) {
783 ex_num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
9cbe9fd5 784
13ac695e
S		 785 if (ex_num > clean_count) {
786 num += ex_num - clean_count;
9cbe9fd5 787 rmb(); /*complete read rx ring bd number*/
b5996f11 788 goto recv;
789 }
790 }
791
13ac695e
S		 792 /* make all data has been write before submit */
793 if (clean_count > 0)
794 hns_nic_alloc_rx_buffers(ring_data, clean_count);
795
b5996f11 796 return recv_pkts;
797}
798
799static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
800{
801 struct hnae_ring *ring = ring_data->ring;
802 int num = 0;
803
804 /* for hardware bug fixed */
805 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
806
807 if (num > 0) {
808 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
809 ring_data->ring, 1);
810
811 napi_schedule(&ring_data->napi);
812 }
813}
814
815static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring,
816 int *bytes, int *pkts)
817{
818 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
819
820 (*pkts) += (desc_cb->type == DESC_TYPE_SKB);
821 (*bytes) += desc_cb->length;
822 /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
823 hnae_free_buffer_detach(ring, ring->next_to_clean);
824
825 ring_ptr_move_fw(ring, next_to_clean);
826}
827
828static int is_valid_clean_head(struct hnae_ring *ring, int h)
829{
830 int u = ring->next_to_use;
831 int c = ring->next_to_clean;
832
833 if (unlikely(h > ring->desc_num))
834 return 0;
835
836 assert(u > 0 && u < ring->desc_num);
837 assert(c > 0 && c < ring->desc_num);
838 assert(u != c && h != c); /* must be checked before call this func */
839
840 return u > c ? (h > c && h <= u) : (h > c || h <= u);
841}
842
843/* netif_tx_lock will turn down the performance, set only when necessary */
844#ifdef CONFIG_NET_POLL_CONTROLLER
845#define NETIF_TX_LOCK(ndev) netif_tx_lock(ndev)
846#define NETIF_TX_UNLOCK(ndev) netif_tx_unlock(ndev)
847#else
848#define NETIF_TX_LOCK(ndev)
849#define NETIF_TX_UNLOCK(ndev)
850#endif
851/* reclaim all desc in one budget
852 * return error or number of desc left
853 */
854static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
855 int budget, void *v)
856{
857 struct hnae_ring *ring = ring_data->ring;
858 struct net_device *ndev = ring_data->napi.dev;
859 struct netdev_queue *dev_queue;
860 struct hns_nic_priv *priv = netdev_priv(ndev);
861 int head;
862 int bytes, pkts;
863
864 NETIF_TX_LOCK(ndev);
865
866 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
867 rmb(); /* make sure head is ready before touch any data */
868
869 if (is_ring_empty(ring) || head == ring->next_to_clean) {
870 NETIF_TX_UNLOCK(ndev);
871 return 0; /* no data to poll */
872 }
873
874 if (!is_valid_clean_head(ring, head)) {
875 netdev_err(ndev, "wrong head (%d, %d-%d)\n", head,
876 ring->next_to_use, ring->next_to_clean);
877 ring->stats.io_err_cnt++;
878 NETIF_TX_UNLOCK(ndev);
879 return -EIO;
880 }
881
882 bytes = 0;
883 pkts = 0;
9cbe9fd5 884 while (head != ring->next_to_clean) {
b5996f11 885 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
9cbe9fd5 886 /* issue prefetch for next Tx descriptor */
887 prefetch(&ring->desc_cb[ring->next_to_clean]);
888 }
b5996f11 889
890 NETIF_TX_UNLOCK(ndev);
891
892 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
893 netdev_tx_completed_queue(dev_queue, pkts, bytes);
894
13ac695e
S		 895 if (unlikely(priv->link && !netif_carrier_ok(ndev)))
896 netif_carrier_on(ndev);
897
b5996f11 898 if (unlikely(pkts && netif_carrier_ok(ndev) &&
899 (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) {
900 /* Make sure that anybody stopping the queue after this
901 * sees the new next_to_clean.
902 */
903 smp_mb();
904 if (netif_tx_queue_stopped(dev_queue) &&
905 !test_bit(NIC_STATE_DOWN, &priv->state)) {
906 netif_tx_wake_queue(dev_queue);
907 ring->stats.restart_queue++;
908 }
909 }
910 return 0;
911}
912
913static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
914{
915 struct hnae_ring *ring = ring_data->ring;
1c3bae6e 916 int head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
b5996f11 917
918 if (head != ring->next_to_clean) {
919 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
920 ring_data->ring, 1);
921
922 napi_schedule(&ring_data->napi);
923 }
924}
925
926static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
927{
928 struct hnae_ring *ring = ring_data->ring;
929 struct net_device *ndev = ring_data->napi.dev;
930 struct netdev_queue *dev_queue;
931 int head;
932 int bytes, pkts;
933
934 NETIF_TX_LOCK(ndev);
935
936 head = ring->next_to_use; /* ntu :soft setted ring position*/
937 bytes = 0;
938 pkts = 0;
939 while (head != ring->next_to_clean)
940 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
941
942 NETIF_TX_UNLOCK(ndev);
943
944 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
945 netdev_tx_reset_queue(dev_queue);
946}
947
948static int hns_nic_common_poll(struct napi_struct *napi, int budget)
949{
950 struct hns_nic_ring_data *ring_data =
951 container_of(napi, struct hns_nic_ring_data, napi);
952 int clean_complete = ring_data->poll_one(
953 ring_data, budget, ring_data->ex_process);
954
955 if (clean_complete >= 0 && clean_complete < budget) {
956 napi_complete(napi);
957 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
958 ring_data->ring, 0);
4b34aa41
SL		 959 if (ring_data->fini_process)
960 ring_data->fini_process(ring_data);
9cbe9fd5 961 return 0;
b5996f11 962 }
963
964 return clean_complete;
965}
966
967static irqreturn_t hns_irq_handle(int irq, void *dev)
968{
969 struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev;
970
971 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
972 ring_data->ring, 1);
973 napi_schedule(&ring_data->napi);
974
975 return IRQ_HANDLED;
976}
977
978/**
979 *hns_nic_adjust_link - adjust net work mode by the phy stat or new param
980 *@ndev: net device
981 */
982static void hns_nic_adjust_link(struct net_device *ndev)
983{
984 struct hns_nic_priv *priv = netdev_priv(ndev);
985 struct hnae_handle *h = priv->ae_handle;
986
987 h->dev->ops->adjust_link(h, ndev->phydev->speed, ndev->phydev->duplex);
988}
989
990/**
991 *hns_nic_init_phy - init phy
992 *@ndev: net device
993 *@h: ae handle
994 * Return 0 on success, negative on failure
995 */
996int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h)
997{
998 struct hns_nic_priv *priv = netdev_priv(ndev);
652d39b0
KY		 999 struct phy_device *phy_dev = h->phy_dev;
1000 int ret;
b5996f11 1001
652d39b0 1002 if (!h->phy_dev)
b5996f11 1003 return 0;
1004
652d39b0
KY		 1005 if (h->phy_if != PHY_INTERFACE_MODE_XGMII) {
1006 phy_dev->dev_flags = 0;
b5996f11 1007
652d39b0
KY		 1008 ret = phy_connect_direct(ndev, phy_dev, hns_nic_adjust_link,
1009 h->phy_if);
1010 } else {
1011 ret = phy_attach_direct(ndev, phy_dev, 0, h->phy_if);
1012 }
1013 if (unlikely(ret))
1014 return -ENODEV;
b5996f11 1015
1016 phy_dev->supported &= h->if_support;
1017 phy_dev->advertising = phy_dev->supported;
1018
1019 if (h->phy_if == PHY_INTERFACE_MODE_XGMII)
1020 phy_dev->autoneg = false;
1021
1022 priv->phy = phy_dev;
1023
1024 return 0;
1025}
1026
1027static int hns_nic_ring_open(struct net_device *netdev, int idx)
1028{
1029 struct hns_nic_priv *priv = netdev_priv(netdev);
1030 struct hnae_handle *h = priv->ae_handle;
1031
1032 napi_enable(&priv->ring_data[idx].napi);
1033
1034 enable_irq(priv->ring_data[idx].ring->irq);
1035 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0);
1036
1037 return 0;
1038}
1039
1040static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p)
1041{
1042 struct hns_nic_priv *priv = netdev_priv(ndev);
1043 struct hnae_handle *h = priv->ae_handle;
1044 struct sockaddr *mac_addr = p;
1045 int ret;
1046
1047 if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
1048 return -EADDRNOTAVAIL;
1049
1050 ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data);
1051 if (ret) {
1052 netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret);
1053 return ret;
1054 }
1055
1056 memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len);
1057
1058 return 0;
1059}
1060
1061void hns_nic_update_stats(struct net_device *netdev)
1062{
1063 struct hns_nic_priv *priv = netdev_priv(netdev);
1064 struct hnae_handle *h = priv->ae_handle;
1065
1066 h->dev->ops->update_stats(h, &netdev->stats);
1067}
1068
1069/* set mac addr if it is configed. or leave it to the AE driver */
1070static void hns_init_mac_addr(struct net_device *ndev)
1071{
1072 struct hns_nic_priv *priv = netdev_priv(ndev);
b5996f11 1073
6162928c 1074 if (!device_get_mac_address(priv->dev, ndev->dev_addr, ETH_ALEN)) {
b5996f11 1075 eth_hw_addr_random(ndev);
1076 dev_warn(priv->dev, "No valid mac, use random mac %pM",
1077 ndev->dev_addr);
1078 }
1079}
1080
1081static void hns_nic_ring_close(struct net_device *netdev, int idx)
1082{
1083 struct hns_nic_priv *priv = netdev_priv(netdev);
1084 struct hnae_handle *h = priv->ae_handle;
1085
1086 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1);
1087 disable_irq(priv->ring_data[idx].ring->irq);
1088
1089 napi_disable(&priv->ring_data[idx].napi);
1090}
1091
13ac695e 1092static void hns_set_irq_affinity(struct hns_nic_priv *priv)
b5996f11 1093{
1094 struct hnae_handle *h = priv->ae_handle;
1095 struct hns_nic_ring_data *rd;
1096 int i;
b5996f11 1097 int cpu;
1098 cpumask_t mask;
1099
13ac695e
S		 1100 /*diffrent irq banlance for 16core and 32core*/
1101 if (h->q_num == num_possible_cpus()) {
1102 for (i = 0; i < h->q_num * 2; i++) {
1103 rd = &priv->ring_data[i];
1104 if (cpu_online(rd->queue_index)) {
1105 cpumask_clear(&mask);
1106 cpu = rd->queue_index;
1107 cpumask_set_cpu(cpu, &mask);
1108 (void)irq_set_affinity_hint(rd->ring->irq,
1109 &mask);
1110 }
1111 }
1112 } else {
1113 for (i = 0; i < h->q_num; i++) {
1114 rd = &priv->ring_data[i];
1115 if (cpu_online(rd->queue_index * 2)) {
1116 cpumask_clear(&mask);
1117 cpu = rd->queue_index * 2;
1118 cpumask_set_cpu(cpu, &mask);
1119 (void)irq_set_affinity_hint(rd->ring->irq,
1120 &mask);
1121 }
1122 }
1123
1124 for (i = h->q_num; i < h->q_num * 2; i++) {
1125 rd = &priv->ring_data[i];
1126 if (cpu_online(rd->queue_index * 2 + 1)) {
1127 cpumask_clear(&mask);
1128 cpu = rd->queue_index * 2 + 1;
1129 cpumask_set_cpu(cpu, &mask);
1130 (void)irq_set_affinity_hint(rd->ring->irq,
1131 &mask);
1132 }
1133 }
1134 }
1135}
1136
1137static int hns_nic_init_irq(struct hns_nic_priv *priv)
1138{
1139 struct hnae_handle *h = priv->ae_handle;
1140 struct hns_nic_ring_data *rd;
1141 int i;
1142 int ret;
1143
b5996f11 1144 for (i = 0; i < h->q_num * 2; i++) {
1145 rd = &priv->ring_data[i];
1146
1147 if (rd->ring->irq_init_flag == RCB_IRQ_INITED)
1148 break;
1149
1150 snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN,
1151 "%s-%s%d", priv->netdev->name,
1152 (i < h->q_num ? "tx" : "rx"), rd->queue_index);
1153
1154 rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0';
1155
1156 ret = request_irq(rd->ring->irq,
1157 hns_irq_handle, 0, rd->ring->ring_name, rd);
1158 if (ret) {
1159 netdev_err(priv->netdev, "request irq(%d) fail\n",
1160 rd->ring->irq);
1161 return ret;
1162 }
1163 disable_irq(rd->ring->irq);
1164 rd->ring->irq_init_flag = RCB_IRQ_INITED;
b5996f11 1165 }
1166
13ac695e
S		 1167 /*set cpu affinity*/
1168 hns_set_irq_affinity(priv);
1169
b5996f11 1170 return 0;
1171}
1172
1173static int hns_nic_net_up(struct net_device *ndev)
1174{
1175 struct hns_nic_priv *priv = netdev_priv(ndev);
1176 struct hnae_handle *h = priv->ae_handle;
1177 int i, j, k;
1178 int ret;
1179
1180 ret = hns_nic_init_irq(priv);
1181 if (ret != 0) {
1182 netdev_err(ndev, "hns init irq failed! ret=%d\n", ret);
1183 return ret;
1184 }
1185
1186 for (i = 0; i < h->q_num * 2; i++) {
1187 ret = hns_nic_ring_open(ndev, i);
1188 if (ret)
1189 goto out_has_some_queues;
1190 }
1191
1192 for (k = 0; k < h->q_num; k++)
1193 h->dev->ops->toggle_queue_status(h->qs[k], 1);
1194
1195 ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr);
1196 if (ret)
1197 goto out_set_mac_addr_err;
1198
1199 ret = h->dev->ops->start ? h->dev->ops->start(h) : 0;
1200 if (ret)
1201 goto out_start_err;
1202
1203 if (priv->phy)
1204 phy_start(priv->phy);
1205
1206 clear_bit(NIC_STATE_DOWN, &priv->state);
1207 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
1208
1209 return 0;
1210
1211out_start_err:
1212 netif_stop_queue(ndev);
1213out_set_mac_addr_err:
1214 for (k = 0; k < h->q_num; k++)
1215 h->dev->ops->toggle_queue_status(h->qs[k], 0);
1216out_has_some_queues:
1217 for (j = i - 1; j >= 0; j--)
1218 hns_nic_ring_close(ndev, j);
1219
1220 set_bit(NIC_STATE_DOWN, &priv->state);
1221
1222 return ret;
1223}
1224
1225static void hns_nic_net_down(struct net_device *ndev)
1226{
1227 int i;
1228 struct hnae_ae_ops *ops;
1229 struct hns_nic_priv *priv = netdev_priv(ndev);
1230
1231 if (test_and_set_bit(NIC_STATE_DOWN, &priv->state))
1232 return;
1233
1234 (void)del_timer_sync(&priv->service_timer);
1235 netif_tx_stop_all_queues(ndev);
1236 netif_carrier_off(ndev);
1237 netif_tx_disable(ndev);
1238 priv->link = 0;
1239
1240 if (priv->phy)
1241 phy_stop(priv->phy);
1242
1243 ops = priv->ae_handle->dev->ops;
1244
1245 if (ops->stop)
1246 ops->stop(priv->ae_handle);
1247
1248 netif_tx_stop_all_queues(ndev);
1249
1250 for (i = priv->ae_handle->q_num - 1; i >= 0; i--) {
1251 hns_nic_ring_close(ndev, i);
1252 hns_nic_ring_close(ndev, i + priv->ae_handle->q_num);
1253
1254 /* clean tx buffers*/
1255 hns_nic_tx_clr_all_bufs(priv->ring_data + i);
1256 }
1257}
1258
1259void hns_nic_net_reset(struct net_device *ndev)
1260{
1261 struct hns_nic_priv *priv = netdev_priv(ndev);
1262 struct hnae_handle *handle = priv->ae_handle;
1263
1264 while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state))
1265 usleep_range(1000, 2000);
1266
1267 (void)hnae_reinit_handle(handle);
1268
1269 clear_bit(NIC_STATE_RESETTING, &priv->state);
1270}
1271
1272void hns_nic_net_reinit(struct net_device *netdev)
1273{
1274 struct hns_nic_priv *priv = netdev_priv(netdev);
1275
860e9538 1276 netif_trans_update(priv->netdev);
b5996f11 1277 while (test_and_set_bit(NIC_STATE_REINITING, &priv->state))
1278 usleep_range(1000, 2000);
1279
1280 hns_nic_net_down(netdev);
1281 hns_nic_net_reset(netdev);
1282 (void)hns_nic_net_up(netdev);
1283 clear_bit(NIC_STATE_REINITING, &priv->state);
1284}
1285
1286static int hns_nic_net_open(struct net_device *ndev)
1287{
1288 struct hns_nic_priv *priv = netdev_priv(ndev);
1289 struct hnae_handle *h = priv->ae_handle;
1290 int ret;
1291
1292 if (test_bit(NIC_STATE_TESTING, &priv->state))
1293 return -EBUSY;
1294
1295 priv->link = 0;
1296 netif_carrier_off(ndev);
1297
1298 ret = netif_set_real_num_tx_queues(ndev, h->q_num);
1299 if (ret < 0) {
1300 netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n",
1301 ret);
1302 return ret;
1303 }
1304
1305 ret = netif_set_real_num_rx_queues(ndev, h->q_num);
1306 if (ret < 0) {
1307 netdev_err(ndev,
1308 "netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
1309 return ret;
1310 }
1311
1312 ret = hns_nic_net_up(ndev);
1313 if (ret) {
1314 netdev_err(ndev,
1315 "hns net up fail, ret=%d!\n", ret);
1316 return ret;
1317 }
1318
1319 return 0;
1320}
1321
1322static int hns_nic_net_stop(struct net_device *ndev)
1323{
1324 hns_nic_net_down(ndev);
1325
1326 return 0;
1327}
1328
1329static void hns_tx_timeout_reset(struct hns_nic_priv *priv);
1330static void hns_nic_net_timeout(struct net_device *ndev)
1331{
1332 struct hns_nic_priv *priv = netdev_priv(ndev);
1333
1334 hns_tx_timeout_reset(priv);
1335}
1336
1337static int hns_nic_do_ioctl(struct net_device *netdev, struct ifreq *ifr,
1338 int cmd)
1339{
1340 struct hns_nic_priv *priv = netdev_priv(netdev);
1341 struct phy_device *phy_dev = priv->phy;
1342
1343 if (!netif_running(netdev))
1344 return -EINVAL;
1345
1346 if (!phy_dev)
1347 return -ENOTSUPP;
1348
1349 return phy_mii_ioctl(phy_dev, ifr, cmd);
1350}
1351
1352/* use only for netconsole to poll with the device without interrupt */
1353#ifdef CONFIG_NET_POLL_CONTROLLER
1354void hns_nic_poll_controller(struct net_device *ndev)
1355{
1356 struct hns_nic_priv *priv = netdev_priv(ndev);
1357 unsigned long flags;
1358 int i;
1359
1360 local_irq_save(flags);
1361 for (i = 0; i < priv->ae_handle->q_num * 2; i++)
1362 napi_schedule(&priv->ring_data[i].napi);
1363 local_irq_restore(flags);
1364}
1365#endif
1366
1367static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb,
1368 struct net_device *ndev)
1369{
1370 struct hns_nic_priv *priv = netdev_priv(ndev);
1371 int ret;
1372
1373 assert(skb->queue_mapping < ndev->ae_handle->q_num);
1374 ret = hns_nic_net_xmit_hw(ndev, skb,
1375 &tx_ring_data(priv, skb->queue_mapping));
1376 if (ret == NETDEV_TX_OK) {
860e9538 1377 netif_trans_update(ndev);
b5996f11 1378 ndev->stats.tx_bytes += skb->len;
1379 ndev->stats.tx_packets++;
1380 }
1381 return (netdev_tx_t)ret;
1382}
1383
1384static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu)
1385{
1386 struct hns_nic_priv *priv = netdev_priv(ndev);
1387 struct hnae_handle *h = priv->ae_handle;
1388 int ret;
1389
1390 /* MTU < 68 is an error and causes problems on some kernels */
1391 if (new_mtu < 68)
1392 return -EINVAL;
1393
1394 if (!h->dev->ops->set_mtu)
1395 return -ENOTSUPP;
1396
1397 if (netif_running(ndev)) {
1398 (void)hns_nic_net_stop(ndev);
1399 msleep(100);
1400
1401 ret = h->dev->ops->set_mtu(h, new_mtu);
1402 if (ret)
1403 netdev_err(ndev, "set mtu fail, return value %d\n",
1404 ret);
1405
1406 if (hns_nic_net_open(ndev))
1407 netdev_err(ndev, "hns net open fail\n");
1408 } else {
1409 ret = h->dev->ops->set_mtu(h, new_mtu);
1410 }
1411
1412 if (!ret)
1413 ndev->mtu = new_mtu;
1414
1415 return ret;
1416}
1417
38f616da
S		 1418static int hns_nic_set_features(struct net_device *netdev,
1419 netdev_features_t features)
1420{
1421 struct hns_nic_priv *priv = netdev_priv(netdev);
1422 struct hnae_handle *h = priv->ae_handle;
1423
1424 switch (priv->enet_ver) {
1425 case AE_VERSION_1:
1426 if (features & (NETIF_F_TSO | NETIF_F_TSO6))
1427 netdev_info(netdev, "enet v1 do not support tso!\n");
1428 break;
1429 default:
1430 if (features & (NETIF_F_TSO | NETIF_F_TSO6)) {
1431 priv->ops.fill_desc = fill_tso_desc;
1432 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
1433 /* The chip only support 7*4096 */
1434 netif_set_gso_max_size(netdev, 7 * 4096);
1435 h->dev->ops->set_tso_stats(h, 1);
1436 } else {
1437 priv->ops.fill_desc = fill_v2_desc;
1438 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1439 h->dev->ops->set_tso_stats(h, 0);
1440 }
1441 break;
1442 }
1443 netdev->features = features;
1444 return 0;
1445}
1446
1447static netdev_features_t hns_nic_fix_features(
1448 struct net_device *netdev, netdev_features_t features)
1449{
1450 struct hns_nic_priv *priv = netdev_priv(netdev);
1451
1452 switch (priv->enet_ver) {
1453 case AE_VERSION_1:
1454 features &= ~(NETIF_F_TSO | NETIF_F_TSO6 |
1455 NETIF_F_HW_VLAN_CTAG_FILTER);
1456 break;
1457 default:
1458 break;
1459 }
1460 return features;
1461}
1462
b5996f11 1463/**
1464 * nic_set_multicast_list - set mutl mac address
1465 * @netdev: net device
1466 * @p: mac address
1467 *
1468 * return void
1469 */
1470void hns_set_multicast_list(struct net_device *ndev)
1471{
1472 struct hns_nic_priv *priv = netdev_priv(ndev);
1473 struct hnae_handle *h = priv->ae_handle;
1474 struct netdev_hw_addr *ha = NULL;
1475
1476 if (!h) {
1477 netdev_err(ndev, "hnae handle is null\n");
1478 return;
1479 }
1480
1481 if (h->dev->ops->set_mc_addr) {
1482 netdev_for_each_mc_addr(ha, ndev)
1483 if (h->dev->ops->set_mc_addr(h, ha->addr))
1484 netdev_err(ndev, "set multicast fail\n");
1485 }
1486}
1487
4568637f 1488void hns_nic_set_rx_mode(struct net_device *ndev)
1489{
1490 struct hns_nic_priv *priv = netdev_priv(ndev);
1491 struct hnae_handle *h = priv->ae_handle;
1492
1493 if (h->dev->ops->set_promisc_mode) {
1494 if (ndev->flags & IFF_PROMISC)
1495 h->dev->ops->set_promisc_mode(h, 1);
1496 else
1497 h->dev->ops->set_promisc_mode(h, 0);
1498 }
1499
1500 hns_set_multicast_list(ndev);
1501}
1502
b5996f11 1503struct rtnl_link_stats64 *hns_nic_get_stats64(struct net_device *ndev,
1504 struct rtnl_link_stats64 *stats)
1505{
1506 int idx = 0;
1507 u64 tx_bytes = 0;
1508 u64 rx_bytes = 0;
1509 u64 tx_pkts = 0;
1510 u64 rx_pkts = 0;
1511 struct hns_nic_priv *priv = netdev_priv(ndev);
1512 struct hnae_handle *h = priv->ae_handle;
1513
1514 for (idx = 0; idx < h->q_num; idx++) {
1515 tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes;
1516 tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts;
1517 rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes;
1518 rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts;
1519 }
1520
1521 stats->tx_bytes = tx_bytes;
1522 stats->tx_packets = tx_pkts;
1523 stats->rx_bytes = rx_bytes;
1524 stats->rx_packets = rx_pkts;
1525
1526 stats->rx_errors = ndev->stats.rx_errors;
1527 stats->multicast = ndev->stats.multicast;
1528 stats->rx_length_errors = ndev->stats.rx_length_errors;
1529 stats->rx_crc_errors = ndev->stats.rx_crc_errors;
1530 stats->rx_missed_errors = ndev->stats.rx_missed_errors;
1531
1532 stats->tx_errors = ndev->stats.tx_errors;
1533 stats->rx_dropped = ndev->stats.rx_dropped;
1534 stats->tx_dropped = ndev->stats.tx_dropped;
1535 stats->collisions = ndev->stats.collisions;
1536 stats->rx_over_errors = ndev->stats.rx_over_errors;
1537 stats->rx_frame_errors = ndev->stats.rx_frame_errors;
1538 stats->rx_fifo_errors = ndev->stats.rx_fifo_errors;
1539 stats->tx_aborted_errors = ndev->stats.tx_aborted_errors;
1540 stats->tx_carrier_errors = ndev->stats.tx_carrier_errors;
1541 stats->tx_fifo_errors = ndev->stats.tx_fifo_errors;
1542 stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors;
1543 stats->tx_window_errors = ndev->stats.tx_window_errors;
1544 stats->rx_compressed = ndev->stats.rx_compressed;
1545 stats->tx_compressed = ndev->stats.tx_compressed;
1546
1547 return stats;
1548}
1549
1550static const struct net_device_ops hns_nic_netdev_ops = {
1551 .ndo_open = hns_nic_net_open,
1552 .ndo_stop = hns_nic_net_stop,
1553 .ndo_start_xmit = hns_nic_net_xmit,
1554 .ndo_tx_timeout = hns_nic_net_timeout,
1555 .ndo_set_mac_address = hns_nic_net_set_mac_address,
1556 .ndo_change_mtu = hns_nic_change_mtu,
1557 .ndo_do_ioctl = hns_nic_do_ioctl,
38f616da
S		 1558 .ndo_set_features = hns_nic_set_features,
1559 .ndo_fix_features = hns_nic_fix_features,
b5996f11 1560 .ndo_get_stats64 = hns_nic_get_stats64,
1561#ifdef CONFIG_NET_POLL_CONTROLLER
1562 .ndo_poll_controller = hns_nic_poll_controller,
1563#endif
4568637f 1564 .ndo_set_rx_mode = hns_nic_set_rx_mode,
b5996f11 1565};
1566
1567static void hns_nic_update_link_status(struct net_device *netdev)
1568{
1569 struct hns_nic_priv *priv = netdev_priv(netdev);
1570
1571 struct hnae_handle *h = priv->ae_handle;
1572 int state = 1;
1573
1574 if (priv->phy) {
1575 if (!genphy_update_link(priv->phy))
1576 state = priv->phy->link;
1577 else
1578 state = 0;
1579 }
1580 state = state && h->dev->ops->get_status(h);
1581
1582 if (state != priv->link) {
1583 if (state) {
1584 netif_carrier_on(netdev);
1585 netif_tx_wake_all_queues(netdev);
1586 netdev_info(netdev, "link up\n");
1587 } else {
1588 netif_carrier_off(netdev);
1589 netdev_info(netdev, "link down\n");
1590 }
1591 priv->link = state;
1592 }
1593}
1594
1595/* for dumping key regs*/
1596static void hns_nic_dump(struct hns_nic_priv *priv)
1597{
1598 struct hnae_handle *h = priv->ae_handle;
1599 struct hnae_ae_ops *ops = h->dev->ops;
1600 u32 *data, reg_num, i;
1601
1602 if (ops->get_regs_len && ops->get_regs) {
1603 reg_num = ops->get_regs_len(priv->ae_handle);
1604 reg_num = (reg_num + 3ul) & ~3ul;
1605 data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL);
1606 if (data) {
1607 ops->get_regs(priv->ae_handle, data);
1608 for (i = 0; i < reg_num; i += 4)
1609 pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
1610 i, data[i], data[i + 1],
1611 data[i + 2], data[i + 3]);
1612 kfree(data);
1613 }
1614 }
1615
1616 for (i = 0; i < h->q_num; i++) {
1617 pr_info("tx_queue%d_next_to_clean:%d\n",
1618 i, h->qs[i]->tx_ring.next_to_clean);
1619 pr_info("tx_queue%d_next_to_use:%d\n",
1620 i, h->qs[i]->tx_ring.next_to_use);
1621 pr_info("rx_queue%d_next_to_clean:%d\n",
1622 i, h->qs[i]->rx_ring.next_to_clean);
1623 pr_info("rx_queue%d_next_to_use:%d\n",
1624 i, h->qs[i]->rx_ring.next_to_use);
1625 }
1626}
1627
1628/* for resetting suntask*/
1629static void hns_nic_reset_subtask(struct hns_nic_priv *priv)
1630{
1631 enum hnae_port_type type = priv->ae_handle->port_type;
1632
1633 if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state))
1634 return;
1635 clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
1636
1637 /* If we're already down, removing or resetting, just bail */
1638 if (test_bit(NIC_STATE_DOWN, &priv->state) ||
1639 test_bit(NIC_STATE_REMOVING, &priv->state) ||
1640 test_bit(NIC_STATE_RESETTING, &priv->state))
1641 return;
1642
1643 hns_nic_dump(priv);
13ac695e
S		 1644 netdev_info(priv->netdev, "try to reset %s port!\n",
1645 (type == HNAE_PORT_DEBUG ? "debug" : "service"));
b5996f11 1646
1647 rtnl_lock();
90a505b9 1648 /* put off any impending NetWatchDogTimeout */
860e9538 1649 netif_trans_update(priv->netdev);
90a505b9 1650
13ac695e 1651 if (type == HNAE_PORT_DEBUG) {
b5996f11 1652 hns_nic_net_reinit(priv->netdev);
13ac695e
S		 1653 } else {
1654 netif_carrier_off(priv->netdev);
1655 netif_tx_disable(priv->netdev);
1656 }
b5996f11 1657 rtnl_unlock();
1658}
1659
1660/* for doing service complete*/
1661static void hns_nic_service_event_complete(struct hns_nic_priv *priv)
1662{
13ac695e 1663 WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state));
b5996f11 1664
1665 smp_mb__before_atomic();
1666 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
1667}
1668
1669static void hns_nic_service_task(struct work_struct *work)
1670{
1671 struct hns_nic_priv *priv
1672 = container_of(work, struct hns_nic_priv, service_task);
1673 struct hnae_handle *h = priv->ae_handle;
1674
1675 hns_nic_update_link_status(priv->netdev);
1676 h->dev->ops->update_led_status(h);
1677 hns_nic_update_stats(priv->netdev);
1678
1679 hns_nic_reset_subtask(priv);
1680 hns_nic_service_event_complete(priv);
1681}
1682
1683static void hns_nic_task_schedule(struct hns_nic_priv *priv)
1684{
1685 if (!test_bit(NIC_STATE_DOWN, &priv->state) &&
1686 !test_bit(NIC_STATE_REMOVING, &priv->state) &&
1687 !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state))
1688 (void)schedule_work(&priv->service_task);
1689}
1690
1691static void hns_nic_service_timer(unsigned long data)
1692{
1693 struct hns_nic_priv *priv = (struct hns_nic_priv *)data;
1694
1695 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
1696
1697 hns_nic_task_schedule(priv);
1698}
1699
1700/**
1701 * hns_tx_timeout_reset - initiate reset due to Tx timeout
1702 * @priv: driver private struct
1703 **/
1704static void hns_tx_timeout_reset(struct hns_nic_priv *priv)
1705{
1706 /* Do the reset outside of interrupt context */
1707 if (!test_bit(NIC_STATE_DOWN, &priv->state)) {
1708 set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
1709 netdev_warn(priv->netdev,
1710 "initiating reset due to tx timeout(%llu,0x%lx)\n",
1711 priv->tx_timeout_count, priv->state);
1712 priv->tx_timeout_count++;
1713 hns_nic_task_schedule(priv);
1714 }
1715}
1716
1717static int hns_nic_init_ring_data(struct hns_nic_priv *priv)
1718{
1719 struct hnae_handle *h = priv->ae_handle;
1720 struct hns_nic_ring_data *rd;
4b34aa41 1721 bool is_ver1 = AE_IS_VER1(priv->enet_ver);
b5996f11 1722 int i;
1723
1724 if (h->q_num > NIC_MAX_Q_PER_VF) {
1725 netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num);
1726 return -EINVAL;
1727 }
1728
1729 priv->ring_data = kzalloc(h->q_num * sizeof(*priv->ring_data) * 2,
1730 GFP_KERNEL);
1731 if (!priv->ring_data)
1732 return -ENOMEM;
1733
1734 for (i = 0; i < h->q_num; i++) {
1735 rd = &priv->ring_data[i];
1736 rd->queue_index = i;
1737 rd->ring = &h->qs[i]->tx_ring;
1738 rd->poll_one = hns_nic_tx_poll_one;
4b34aa41 1739 rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro : NULL;
b5996f11 1740
1741 netif_napi_add(priv->netdev, &rd->napi,
1742 hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM);
1743 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1744 }
1745 for (i = h->q_num; i < h->q_num * 2; i++) {
1746 rd = &priv->ring_data[i];
1747 rd->queue_index = i - h->q_num;
1748 rd->ring = &h->qs[i - h->q_num]->rx_ring;
1749 rd->poll_one = hns_nic_rx_poll_one;
1750 rd->ex_process = hns_nic_rx_up_pro;
4b34aa41 1751 rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro : NULL;
b5996f11 1752
1753 netif_napi_add(priv->netdev, &rd->napi,
1754 hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM);
1755 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1756 }
1757
1758 return 0;
1759}
1760
1761static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv)
1762{
1763 struct hnae_handle *h = priv->ae_handle;
1764 int i;
1765
1766 for (i = 0; i < h->q_num * 2; i++) {
1767 netif_napi_del(&priv->ring_data[i].napi);
1768 if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) {
13ac695e
S		 1769 (void)irq_set_affinity_hint(
1770 priv->ring_data[i].ring->irq,
1771 NULL);
b5996f11 1772 free_irq(priv->ring_data[i].ring->irq,
1773 &priv->ring_data[i]);
1774 }
1775
1776 priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1777 }
1778 kfree(priv->ring_data);
1779}
1780
13ac695e
S		 1781static void hns_nic_set_priv_ops(struct net_device *netdev)
1782{
1783 struct hns_nic_priv *priv = netdev_priv(netdev);
64353af6 1784 struct hnae_handle *h = priv->ae_handle;
13ac695e
S		 1785
1786 if (AE_IS_VER1(priv->enet_ver)) {
1787 priv->ops.fill_desc = fill_desc;
1788 priv->ops.get_rxd_bnum = get_rx_desc_bnum;
1789 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1790 } else {
1791 priv->ops.get_rxd_bnum = get_v2rx_desc_bnum;
64353af6
S		 1792 if ((netdev->features & NETIF_F_TSO) ||
1793 (netdev->features & NETIF_F_TSO6)) {
1794 priv->ops.fill_desc = fill_tso_desc;
1795 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
1796 /* This chip only support 7*4096 */
1797 netif_set_gso_max_size(netdev, 7 * 4096);
1798 h->dev->ops->set_tso_stats(h, 1);
1799 } else {
1800 priv->ops.fill_desc = fill_v2_desc;
1801 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1802 }
13ac695e
S		 1803 }
1804}
1805
b5996f11 1806static int hns_nic_try_get_ae(struct net_device *ndev)
1807{
1808 struct hns_nic_priv *priv = netdev_priv(ndev);
1809 struct hnae_handle *h;
1810 int ret;
1811
1812 h = hnae_get_handle(&priv->netdev->dev,
7b2acae6 1813 priv->fwnode, priv->port_id, NULL);
b5996f11 1814 if (IS_ERR_OR_NULL(h)) {
daa8cfd9 1815 ret = -ENODEV;
b5996f11 1816 dev_dbg(priv->dev, "has not handle, register notifier!\n");
1817 goto out;
1818 }
1819 priv->ae_handle = h;
1820
1821 ret = hns_nic_init_phy(ndev, h);
1822 if (ret) {
1823 dev_err(priv->dev, "probe phy device fail!\n");
1824 goto out_init_phy;
1825 }
1826
1827 ret = hns_nic_init_ring_data(priv);
1828 if (ret) {
1829 ret = -ENOMEM;
1830 goto out_init_ring_data;
1831 }
1832
13ac695e
S		 1833 hns_nic_set_priv_ops(ndev);
1834
b5996f11 1835 ret = register_netdev(ndev);
1836 if (ret) {
1837 dev_err(priv->dev, "probe register netdev fail!\n");
1838 goto out_reg_ndev_fail;
1839 }
1840 return 0;
1841
1842out_reg_ndev_fail:
1843 hns_nic_uninit_ring_data(priv);
1844 priv->ring_data = NULL;
1845out_init_phy:
1846out_init_ring_data:
1847 hnae_put_handle(priv->ae_handle);
1848 priv->ae_handle = NULL;
1849out:
1850 return ret;
1851}
1852
1853static int hns_nic_notifier_action(struct notifier_block *nb,
1854 unsigned long action, void *data)
1855{
1856 struct hns_nic_priv *priv =
1857 container_of(nb, struct hns_nic_priv, notifier_block);
1858
1859 assert(action == HNAE_AE_REGISTER);
1860
1861 if (!hns_nic_try_get_ae(priv->netdev)) {
1862 hnae_unregister_notifier(&priv->notifier_block);
1863 priv->notifier_block.notifier_call = NULL;
1864 }
1865 return 0;
1866}
1867
1868static int hns_nic_dev_probe(struct platform_device *pdev)
1869{
1870 struct device *dev = &pdev->dev;
1871 struct net_device *ndev;
1872 struct hns_nic_priv *priv;
7b2acae6 1873 struct device_node *ae_node;
406adee9 1874 u32 port_id;
b5996f11 1875 int ret;
1876
1877 ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF);
1878 if (!ndev)
1879 return -ENOMEM;
1880
1881 platform_set_drvdata(pdev, ndev);
1882
1883 priv = netdev_priv(ndev);
1884 priv->dev = dev;
1885 priv->netdev = ndev;
1886
7b2acae6 1887 if (of_device_is_compatible(dev->of_node, "hisilicon,hns-nic-v1"))
b5996f11 1888 priv->enet_ver = AE_VERSION_1;
13ac695e
S		 1889 else
1890 priv->enet_ver = AE_VERSION_2;
b5996f11 1891
7b2acae6
KY		 1892 ae_node = of_parse_phandle(dev->of_node, "ae-handle", 0);
1893 if (IS_ERR_OR_NULL(ae_node)) {
1894 ret = PTR_ERR(ae_node);
48189d6a 1895 dev_err(dev, "not find ae-handle\n");
1896 goto out_read_prop_fail;
1897 }
7b2acae6
KY		 1898 priv->fwnode = &ae_node->fwnode;
1899
406adee9 1900 /* try to find port-idx-in-ae first */
6162928c 1901 ret = device_property_read_u32(dev, "port-idx-in-ae", &port_id);
406adee9
YZZ		 1902 if (ret) {
1903 /* only for old code compatible */
6162928c 1904 ret = device_property_read_u32(dev, "port-id", &port_id);
406adee9
YZZ		 1905 if (ret)
1906 goto out_read_prop_fail;
1907 /* for old dts, we need to caculate the port offset */
1908 port_id = port_id < HNS_SRV_OFFSET ? port_id + HNS_DEBUG_OFFSET
1909 : port_id - HNS_SRV_OFFSET;
1910 }
1911 priv->port_id = port_id;
b5996f11 1912
1913 hns_init_mac_addr(ndev);
1914
1915 ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT;
1916 ndev->priv_flags |= IFF_UNICAST_FLT;
1917 ndev->netdev_ops = &hns_nic_netdev_ops;
1918 hns_ethtool_set_ops(ndev);
13ac695e 1919
b5996f11 1920 ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1921 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
1922 NETIF_F_GRO;
1923 ndev->vlan_features |=
1924 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM;
1925 ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO;
1926
13ac695e
S		 1927 switch (priv->enet_ver) {
1928 case AE_VERSION_2:
64353af6 1929 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
13ac695e
S		 1930 ndev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1931 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
64353af6 1932 NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6;
13ac695e
S		 1933 break;
1934 default:
1935 break;
1936 }
1937
b5996f11 1938 SET_NETDEV_DEV(ndev, dev);
1939
1940 if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)))
1941 dev_dbg(dev, "set mask to 64bit\n");
1942 else
1943 dev_err(dev, "set mask to 32bit fail!\n");
1944
1945 /* carrier off reporting is important to ethtool even BEFORE open */
1946 netif_carrier_off(ndev);
1947
1948 setup_timer(&priv->service_timer, hns_nic_service_timer,
1949 (unsigned long)priv);
1950 INIT_WORK(&priv->service_task, hns_nic_service_task);
1951
1952 set_bit(NIC_STATE_SERVICE_INITED, &priv->state);
1953 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
1954 set_bit(NIC_STATE_DOWN, &priv->state);
1955
1956 if (hns_nic_try_get_ae(priv->netdev)) {
1957 priv->notifier_block.notifier_call = hns_nic_notifier_action;
1958 ret = hnae_register_notifier(&priv->notifier_block);
1959 if (ret) {
1960 dev_err(dev, "register notifier fail!\n");
1961 goto out_notify_fail;
1962 }
1963 dev_dbg(dev, "has not handle, register notifier!\n");
1964 }
1965
1966 return 0;
1967
1968out_notify_fail:
1969 (void)cancel_work_sync(&priv->service_task);
48189d6a 1970out_read_prop_fail:
b5996f11 1971 free_netdev(ndev);
1972 return ret;
1973}
1974
1975static int hns_nic_dev_remove(struct platform_device *pdev)
1976{
1977 struct net_device *ndev = platform_get_drvdata(pdev);
1978 struct hns_nic_priv *priv = netdev_priv(ndev);
1979
1980 if (ndev->reg_state != NETREG_UNINITIALIZED)
1981 unregister_netdev(ndev);
1982
1983 if (priv->ring_data)
1984 hns_nic_uninit_ring_data(priv);
1985 priv->ring_data = NULL;
1986
1987 if (priv->phy)
1988 phy_disconnect(priv->phy);
1989 priv->phy = NULL;
1990
1991 if (!IS_ERR_OR_NULL(priv->ae_handle))
1992 hnae_put_handle(priv->ae_handle);
1993 priv->ae_handle = NULL;
1994 if (priv->notifier_block.notifier_call)
1995 hnae_unregister_notifier(&priv->notifier_block);
1996 priv->notifier_block.notifier_call = NULL;
1997
1998 set_bit(NIC_STATE_REMOVING, &priv->state);
1999 (void)cancel_work_sync(&priv->service_task);
2000
2001 free_netdev(ndev);
2002 return 0;
2003}
2004
2005static const struct of_device_id hns_enet_of_match[] = {
2006 {.compatible = "hisilicon,hns-nic-v1",},
2007 {.compatible = "hisilicon,hns-nic-v2",},
2008 {},
2009};
2010
2011MODULE_DEVICE_TABLE(of, hns_enet_of_match);
2012
2013static struct platform_driver hns_nic_dev_driver = {
2014 .driver = {
2015 .name = "hns-nic",
b5996f11 2016 .of_match_table = hns_enet_of_match,
2017 },
2018 .probe = hns_nic_dev_probe,
2019 .remove = hns_nic_dev_remove,
2020};
2021
2022module_platform_driver(hns_nic_dev_driver);
2023
2024MODULE_DESCRIPTION("HISILICON HNS Ethernet driver");
2025MODULE_AUTHOR("Hisilicon, Inc.");
2026MODULE_LICENSE("GPL");
2027MODULE_ALIAS("platform:hns-nic");
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