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Merge tag 'shared' of git://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma
[deliverable/linux.git] / drivers / net / ethernet / hisilicon / hns / hns_enet.c
CommitLineData
b5996f11 1/*
2 * Copyright (c) 2014-2015 Hisilicon Limited.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 */
9
10#include <linux/clk.h>
11#include <linux/cpumask.h>
12#include <linux/etherdevice.h>
13#include <linux/if_vlan.h>
14#include <linux/interrupt.h>
15#include <linux/io.h>
16#include <linux/ip.h>
17#include <linux/ipv6.h>
18#include <linux/module.h>
19#include <linux/phy.h>
20#include <linux/platform_device.h>
21#include <linux/skbuff.h>
22
23#include "hnae.h"
24#include "hns_enet.h"
25
26#define NIC_MAX_Q_PER_VF 16
27#define HNS_NIC_TX_TIMEOUT (5 * HZ)
28
29#define SERVICE_TIMER_HZ (1 * HZ)
30
31#define NIC_TX_CLEAN_MAX_NUM 256
32#define NIC_RX_CLEAN_MAX_NUM 64
33
b5996f11 34#define RCB_IRQ_NOT_INITED 0
35#define RCB_IRQ_INITED 1
9cbe9fd5 36#define HNS_BUFFER_SIZE_2048 2048
b5996f11 37
13ac695e
S		 38#define BD_MAX_SEND_SIZE 8191
39#define SKB_TMP_LEN(SKB) \
40 (((SKB)->transport_header - (SKB)->mac_header) + tcp_hdrlen(SKB))
41
42static void fill_v2_desc(struct hnae_ring *ring, void *priv,
43 int size, dma_addr_t dma, int frag_end,
44 int buf_num, enum hns_desc_type type, int mtu)
45{
46 struct hnae_desc *desc = &ring->desc[ring->next_to_use];
47 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
48 struct iphdr *iphdr;
49 struct ipv6hdr *ipv6hdr;
50 struct sk_buff *skb;
13ac695e
S		 51 __be16 protocol;
52 u8 bn_pid = 0;
53 u8 rrcfv = 0;
54 u8 ip_offset = 0;
55 u8 tvsvsn = 0;
56 u16 mss = 0;
57 u8 l4_len = 0;
58 u16 paylen = 0;
59
60 desc_cb->priv = priv;
61 desc_cb->length = size;
62 desc_cb->dma = dma;
63 desc_cb->type = type;
64
65 desc->addr = cpu_to_le64(dma);
66 desc->tx.send_size = cpu_to_le16((u16)size);
67
f8a1a636 68 /* config bd buffer end */
13ac695e
S		 69 hnae_set_bit(rrcfv, HNSV2_TXD_VLD_B, 1);
70 hnae_set_field(bn_pid, HNSV2_TXD_BUFNUM_M, 0, buf_num - 1);
71
f8a1a636
SL		 72 /* fill port_id in the tx bd for sending management pkts */
73 hnae_set_field(bn_pid, HNSV2_TXD_PORTID_M,
74 HNSV2_TXD_PORTID_S, ring->q->handle->dport_id);
75
13ac695e
S		 76 if (type == DESC_TYPE_SKB) {
77 skb = (struct sk_buff *)priv;
78
79 if (skb->ip_summed == CHECKSUM_PARTIAL) {
80 skb_reset_mac_len(skb);
81 protocol = skb->protocol;
82 ip_offset = ETH_HLEN;
83
84 if (protocol == htons(ETH_P_8021Q)) {
85 ip_offset += VLAN_HLEN;
86 protocol = vlan_get_protocol(skb);
87 skb->protocol = protocol;
88 }
89
90 if (skb->protocol == htons(ETH_P_IP)) {
91 iphdr = ip_hdr(skb);
92 hnae_set_bit(rrcfv, HNSV2_TXD_L3CS_B, 1);
93 hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1);
94
95 /* check for tcp/udp header */
0b51b1dc
DH		 96 if (iphdr->protocol == IPPROTO_TCP &&
97 skb_is_gso(skb)) {
13ac695e
S		 98 hnae_set_bit(tvsvsn,
99 HNSV2_TXD_TSE_B, 1);
13ac695e 100 l4_len = tcp_hdrlen(skb);
0b51b1dc
DH		 101 mss = skb_shinfo(skb)->gso_size;
102 paylen = skb->len - SKB_TMP_LEN(skb);
13ac695e
S		 103 }
104 } else if (skb->protocol == htons(ETH_P_IPV6)) {
105 hnae_set_bit(tvsvsn, HNSV2_TXD_IPV6_B, 1);
106 ipv6hdr = ipv6_hdr(skb);
107 hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1);
108
109 /* check for tcp/udp header */
0b51b1dc
DH		 110 if (ipv6hdr->nexthdr == IPPROTO_TCP &&
111 skb_is_gso(skb) && skb_is_gso_v6(skb)) {
13ac695e
S		 112 hnae_set_bit(tvsvsn,
113 HNSV2_TXD_TSE_B, 1);
13ac695e 114 l4_len = tcp_hdrlen(skb);
0b51b1dc
DH		 115 mss = skb_shinfo(skb)->gso_size;
116 paylen = skb->len - SKB_TMP_LEN(skb);
13ac695e
S		 117 }
118 }
119 desc->tx.ip_offset = ip_offset;
120 desc->tx.tse_vlan_snap_v6_sctp_nth = tvsvsn;
121 desc->tx.mss = cpu_to_le16(mss);
122 desc->tx.l4_len = l4_len;
123 desc->tx.paylen = cpu_to_le16(paylen);
124 }
125 }
126
127 hnae_set_bit(rrcfv, HNSV2_TXD_FE_B, frag_end);
128
129 desc->tx.bn_pid = bn_pid;
130 desc->tx.ra_ri_cs_fe_vld = rrcfv;
131
132 ring_ptr_move_fw(ring, next_to_use);
133}
134
63434888
KY		 135static const struct acpi_device_id hns_enet_acpi_match[] = {
136 { "HISI00C1", 0 },
137 { "HISI00C2", 0 },
138 { },
139};
140MODULE_DEVICE_TABLE(acpi, hns_enet_acpi_match);
141
b5996f11 142static void fill_desc(struct hnae_ring *ring, void *priv,
143 int size, dma_addr_t dma, int frag_end,
13ac695e 144 int buf_num, enum hns_desc_type type, int mtu)
b5996f11 145{
146 struct hnae_desc *desc = &ring->desc[ring->next_to_use];
147 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
148 struct sk_buff *skb;
149 __be16 protocol;
150 u32 ip_offset;
151 u32 asid_bufnum_pid = 0;
152 u32 flag_ipoffset = 0;
153
154 desc_cb->priv = priv;
155 desc_cb->length = size;
156 desc_cb->dma = dma;
157 desc_cb->type = type;
158
159 desc->addr = cpu_to_le64(dma);
160 desc->tx.send_size = cpu_to_le16((u16)size);
161
162 /*config bd buffer end */
163 flag_ipoffset |= 1 << HNS_TXD_VLD_B;
164
165 asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S;
166
167 if (type == DESC_TYPE_SKB) {
168 skb = (struct sk_buff *)priv;
169
170 if (skb->ip_summed == CHECKSUM_PARTIAL) {
171 protocol = skb->protocol;
172 ip_offset = ETH_HLEN;
173
174 /*if it is a SW VLAN check the next protocol*/
175 if (protocol == htons(ETH_P_8021Q)) {
176 ip_offset += VLAN_HLEN;
177 protocol = vlan_get_protocol(skb);
178 skb->protocol = protocol;
179 }
180
181 if (skb->protocol == htons(ETH_P_IP)) {
182 flag_ipoffset |= 1 << HNS_TXD_L3CS_B;
183 /* check for tcp/udp header */
184 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
185
186 } else if (skb->protocol == htons(ETH_P_IPV6)) {
187 /* ipv6 has not l3 cs, check for L4 header */
188 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
189 }
190
191 flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S;
192 }
193 }
194
195 flag_ipoffset |= frag_end << HNS_TXD_FE_B;
196
197 desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid);
198 desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset);
199
200 ring_ptr_move_fw(ring, next_to_use);
201}
202
203static void unfill_desc(struct hnae_ring *ring)
204{
205 ring_ptr_move_bw(ring, next_to_use);
206}
207
13ac695e
S		 208static int hns_nic_maybe_stop_tx(
209 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
b5996f11 210{
13ac695e
S		 211 struct sk_buff *skb = *out_skb;
212 struct sk_buff *new_skb = NULL;
b5996f11 213 int buf_num;
b5996f11 214
215 /* no. of segments (plus a header) */
216 buf_num = skb_shinfo(skb)->nr_frags + 1;
217
218 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
13ac695e
S		 219 if (ring_space(ring) < 1)
220 return -EBUSY;
b5996f11 221
222 new_skb = skb_copy(skb, GFP_ATOMIC);
13ac695e
S		 223 if (!new_skb)
224 return -ENOMEM;
b5996f11 225
226 dev_kfree_skb_any(skb);
13ac695e 227 *out_skb = new_skb;
b5996f11 228 buf_num = 1;
b5996f11 229 } else if (buf_num > ring_space(ring)) {
13ac695e
S		 230 return -EBUSY;
231 }
232
233 *bnum = buf_num;
234 return 0;
235}
236
64353af6
S		 237static int hns_nic_maybe_stop_tso(
238 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
239{
240 int i;
241 int size;
242 int buf_num;
243 int frag_num;
244 struct sk_buff *skb = *out_skb;
245 struct sk_buff *new_skb = NULL;
246 struct skb_frag_struct *frag;
247
248 size = skb_headlen(skb);
249 buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
250
251 frag_num = skb_shinfo(skb)->nr_frags;
252 for (i = 0; i < frag_num; i++) {
253 frag = &skb_shinfo(skb)->frags[i];
254 size = skb_frag_size(frag);
255 buf_num += (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
256 }
257
258 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
259 buf_num = (skb->len + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
260 if (ring_space(ring) < buf_num)
261 return -EBUSY;
262 /* manual split the send packet */
263 new_skb = skb_copy(skb, GFP_ATOMIC);
264 if (!new_skb)
265 return -ENOMEM;
266 dev_kfree_skb_any(skb);
267 *out_skb = new_skb;
268
269 } else if (ring_space(ring) < buf_num) {
270 return -EBUSY;
271 }
272
273 *bnum = buf_num;
274 return 0;
275}
276
277static void fill_tso_desc(struct hnae_ring *ring, void *priv,
278 int size, dma_addr_t dma, int frag_end,
279 int buf_num, enum hns_desc_type type, int mtu)
280{
281 int frag_buf_num;
282 int sizeoflast;
283 int k;
284
285 frag_buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
286 sizeoflast = size % BD_MAX_SEND_SIZE;
287 sizeoflast = sizeoflast ? sizeoflast : BD_MAX_SEND_SIZE;
288
289 /* when the frag size is bigger than hardware, split this frag */
290 for (k = 0; k < frag_buf_num; k++)
291 fill_v2_desc(ring, priv,
292 (k == frag_buf_num - 1) ?
293 sizeoflast : BD_MAX_SEND_SIZE,
294 dma + BD_MAX_SEND_SIZE * k,
295 frag_end && (k == frag_buf_num - 1) ? 1 : 0,
296 buf_num,
297 (type == DESC_TYPE_SKB && !k) ?
298 DESC_TYPE_SKB : DESC_TYPE_PAGE,
299 mtu);
300}
301
13ac695e
S		 302int hns_nic_net_xmit_hw(struct net_device *ndev,
303 struct sk_buff *skb,
304 struct hns_nic_ring_data *ring_data)
305{
306 struct hns_nic_priv *priv = netdev_priv(ndev);
307 struct device *dev = priv->dev;
308 struct hnae_ring *ring = ring_data->ring;
309 struct netdev_queue *dev_queue;
310 struct skb_frag_struct *frag;
311 int buf_num;
312 int seg_num;
313 dma_addr_t dma;
314 int size, next_to_use;
315 int i;
316
317 switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) {
318 case -EBUSY:
b5996f11 319 ring->stats.tx_busy++;
320 goto out_net_tx_busy;
13ac695e
S		 321 case -ENOMEM:
322 ring->stats.sw_err_cnt++;
323 netdev_err(ndev, "no memory to xmit!\n");
324 goto out_err_tx_ok;
325 default:
326 break;
b5996f11 327 }
13ac695e
S		 328
329 /* no. of segments (plus a header) */
330 seg_num = skb_shinfo(skb)->nr_frags + 1;
b5996f11 331 next_to_use = ring->next_to_use;
332
333 /* fill the first part */
334 size = skb_headlen(skb);
335 dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE);
336 if (dma_mapping_error(dev, dma)) {
337 netdev_err(ndev, "TX head DMA map failed\n");
338 ring->stats.sw_err_cnt++;
339 goto out_err_tx_ok;
340 }
13ac695e
S		 341 priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0,
342 buf_num, DESC_TYPE_SKB, ndev->mtu);
b5996f11 343
344 /* fill the fragments */
13ac695e 345 for (i = 1; i < seg_num; i++) {
b5996f11 346 frag = &skb_shinfo(skb)->frags[i - 1];
347 size = skb_frag_size(frag);
348 dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
349 if (dma_mapping_error(dev, dma)) {
350 netdev_err(ndev, "TX frag(%d) DMA map failed\n", i);
351 ring->stats.sw_err_cnt++;
352 goto out_map_frag_fail;
353 }
13ac695e
S		 354 priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma,
355 seg_num - 1 == i ? 1 : 0, buf_num,
356 DESC_TYPE_PAGE, ndev->mtu);
b5996f11 357 }
358
359 /*complete translate all packets*/
360 dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping);
361 netdev_tx_sent_queue(dev_queue, skb->len);
362
363 wmb(); /* commit all data before submit */
364 assert(skb->queue_mapping < priv->ae_handle->q_num);
365 hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num);
366 ring->stats.tx_pkts++;
367 ring->stats.tx_bytes += skb->len;
368
369 return NETDEV_TX_OK;
370
371out_map_frag_fail:
372
13ac695e 373 while (ring->next_to_use != next_to_use) {
b5996f11 374 unfill_desc(ring);
13ac695e
S		 375 if (ring->next_to_use != next_to_use)
376 dma_unmap_page(dev,
377 ring->desc_cb[ring->next_to_use].dma,
378 ring->desc_cb[ring->next_to_use].length,
379 DMA_TO_DEVICE);
380 else
381 dma_unmap_single(dev,
382 ring->desc_cb[next_to_use].dma,
383 ring->desc_cb[next_to_use].length,
384 DMA_TO_DEVICE);
b5996f11 385 }
386
b5996f11 387out_err_tx_ok:
388
389 dev_kfree_skb_any(skb);
390 return NETDEV_TX_OK;
391
392out_net_tx_busy:
393
394 netif_stop_subqueue(ndev, skb->queue_mapping);
395
396 /* Herbert's original patch had:
397 * smp_mb__after_netif_stop_queue();
398 * but since that doesn't exist yet, just open code it.
399 */
400 smp_mb();
401 return NETDEV_TX_BUSY;
402}
403
404/**
405 * hns_nic_get_headlen - determine size of header for RSC/LRO/GRO/FCOE
406 * @data: pointer to the start of the headers
407 * @max: total length of section to find headers in
408 *
409 * This function is meant to determine the length of headers that will
410 * be recognized by hardware for LRO, GRO, and RSC offloads. The main
411 * motivation of doing this is to only perform one pull for IPv4 TCP
412 * packets so that we can do basic things like calculating the gso_size
413 * based on the average data per packet.
414 **/
415static unsigned int hns_nic_get_headlen(unsigned char *data, u32 flag,
416 unsigned int max_size)
417{
418 unsigned char *network;
419 u8 hlen;
420
421 /* this should never happen, but better safe than sorry */
422 if (max_size < ETH_HLEN)
423 return max_size;
424
425 /* initialize network frame pointer */
426 network = data;
427
428 /* set first protocol and move network header forward */
429 network += ETH_HLEN;
430
431 /* handle any vlan tag if present */
432 if (hnae_get_field(flag, HNS_RXD_VLAN_M, HNS_RXD_VLAN_S)
433 == HNS_RX_FLAG_VLAN_PRESENT) {
434 if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN))
435 return max_size;
436
437 network += VLAN_HLEN;
438 }
439
440 /* handle L3 protocols */
441 if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S)
442 == HNS_RX_FLAG_L3ID_IPV4) {
443 if ((typeof(max_size))(network - data) >
444 (max_size - sizeof(struct iphdr)))
445 return max_size;
446
447 /* access ihl as a u8 to avoid unaligned access on ia64 */
448 hlen = (network[0] & 0x0F) << 2;
449
450 /* verify hlen meets minimum size requirements */
451 if (hlen < sizeof(struct iphdr))
452 return network - data;
453
454 /* record next protocol if header is present */
455 } else if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S)
456 == HNS_RX_FLAG_L3ID_IPV6) {
457 if ((typeof(max_size))(network - data) >
458 (max_size - sizeof(struct ipv6hdr)))
459 return max_size;
460
461 /* record next protocol */
462 hlen = sizeof(struct ipv6hdr);
463 } else {
464 return network - data;
465 }
466
467 /* relocate pointer to start of L4 header */
468 network += hlen;
469
470 /* finally sort out TCP/UDP */
471 if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S)
472 == HNS_RX_FLAG_L4ID_TCP) {
473 if ((typeof(max_size))(network - data) >
474 (max_size - sizeof(struct tcphdr)))
475 return max_size;
476
477 /* access doff as a u8 to avoid unaligned access on ia64 */
478 hlen = (network[12] & 0xF0) >> 2;
479
480 /* verify hlen meets minimum size requirements */
481 if (hlen < sizeof(struct tcphdr))
482 return network - data;
483
484 network += hlen;
485 } else if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S)
486 == HNS_RX_FLAG_L4ID_UDP) {
487 if ((typeof(max_size))(network - data) >
488 (max_size - sizeof(struct udphdr)))
489 return max_size;
490
491 network += sizeof(struct udphdr);
492 }
493
494 /* If everything has gone correctly network should be the
495 * data section of the packet and will be the end of the header.
496 * If not then it probably represents the end of the last recognized
497 * header.
498 */
499 if ((typeof(max_size))(network - data) < max_size)
500 return network - data;
501 else
502 return max_size;
503}
504
9cbe9fd5 505static void hns_nic_reuse_page(struct sk_buff *skb, int i,
506 struct hnae_ring *ring, int pull_len,
507 struct hnae_desc_cb *desc_cb)
b5996f11 508{
9cbe9fd5 509 struct hnae_desc *desc;
510 int truesize, size;
511 int last_offset;
be78a690
AB		 512 bool twobufs;
513
514 twobufs = ((PAGE_SIZE < 8192) && hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048);
9cbe9fd5 515
516 desc = &ring->desc[ring->next_to_clean];
517 size = le16_to_cpu(desc->rx.size);
518
be78a690 519 if (twobufs) {
9cbe9fd5 520 truesize = hnae_buf_size(ring);
521 } else {
522 truesize = ALIGN(size, L1_CACHE_BYTES);
523 last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
524 }
525
9cbe9fd5 526 skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len,
527 size - pull_len, truesize - pull_len);
528
b5996f11 529 /* avoid re-using remote pages,flag default unreuse */
be78a690
AB		 530 if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id()))
531 return;
532
533 if (twobufs) {
534 /* if we are only owner of page we can reuse it */
535 if (likely(page_count(desc_cb->priv) == 1)) {
536 /* flip page offset to other buffer */
537 desc_cb->page_offset ^= truesize;
b5996f11 538
b5996f11 539 desc_cb->reuse_flag = 1;
540 /* bump ref count on page before it is given*/
541 get_page(desc_cb->priv);
542 }
be78a690
AB		 543 return;
544 }
545
546 /* move offset up to the next cache line */
547 desc_cb->page_offset += truesize;
548
549 if (desc_cb->page_offset <= last_offset) {
550 desc_cb->reuse_flag = 1;
551 /* bump ref count on page before it is given*/
552 get_page(desc_cb->priv);
b5996f11 553 }
554}
555
13ac695e
S		 556static void get_v2rx_desc_bnum(u32 bnum_flag, int *out_bnum)
557{
558 *out_bnum = hnae_get_field(bnum_flag,
559 HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S) + 1;
560}
561
562static void get_rx_desc_bnum(u32 bnum_flag, int *out_bnum)
563{
564 *out_bnum = hnae_get_field(bnum_flag,
565 HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S);
566}
567
b5996f11 568static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data,
569 struct sk_buff **out_skb, int *out_bnum)
570{
571 struct hnae_ring *ring = ring_data->ring;
572 struct net_device *ndev = ring_data->napi.dev;
13ac695e 573 struct hns_nic_priv *priv = netdev_priv(ndev);
b5996f11 574 struct sk_buff *skb;
575 struct hnae_desc *desc;
576 struct hnae_desc_cb *desc_cb;
0d6b425a 577 struct ethhdr *eh;
b5996f11 578 unsigned char *va;
9cbe9fd5 579 int bnum, length, i;
b5996f11 580 int pull_len;
581 u32 bnum_flag;
582
b5996f11 583 desc = &ring->desc[ring->next_to_clean];
584 desc_cb = &ring->desc_cb[ring->next_to_clean];
13ac695e
S		 585
586 prefetch(desc);
587
b5996f11 588 va = (unsigned char *)desc_cb->buf + desc_cb->page_offset;
589
13ac695e
S		 590 /* prefetch first cache line of first page */
591 prefetch(va);
592#if L1_CACHE_BYTES < 128
593 prefetch(va + L1_CACHE_BYTES);
594#endif
595
596 skb = *out_skb = napi_alloc_skb(&ring_data->napi,
597 HNS_RX_HEAD_SIZE);
b5996f11 598 if (unlikely(!skb)) {
599 netdev_err(ndev, "alloc rx skb fail\n");
600 ring->stats.sw_err_cnt++;
601 return -ENOMEM;
602 }
603
9cbe9fd5 604 prefetchw(skb->data);
13ac695e
S		 605 length = le16_to_cpu(desc->rx.pkt_len);
606 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
607 priv->ops.get_rxd_bnum(bnum_flag, &bnum);
608 *out_bnum = bnum;
609
b5996f11 610 if (length <= HNS_RX_HEAD_SIZE) {
611 memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
612
613 /* we can reuse buffer as-is, just make sure it is local */
614 if (likely(page_to_nid(desc_cb->priv) == numa_node_id()))
615 desc_cb->reuse_flag = 1;
616 else /* this page cannot be reused so discard it */
617 put_page(desc_cb->priv);
618
619 ring_ptr_move_fw(ring, next_to_clean);
620
621 if (unlikely(bnum != 1)) { /* check err*/
622 *out_bnum = 1;
623 goto out_bnum_err;
624 }
625 } else {
626 ring->stats.seg_pkt_cnt++;
627
628 pull_len = hns_nic_get_headlen(va, bnum_flag, HNS_RX_HEAD_SIZE);
629 memcpy(__skb_put(skb, pull_len), va,
630 ALIGN(pull_len, sizeof(long)));
631
9cbe9fd5 632 hns_nic_reuse_page(skb, 0, ring, pull_len, desc_cb);
b5996f11 633 ring_ptr_move_fw(ring, next_to_clean);
634
635 if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/
636 *out_bnum = 1;
637 goto out_bnum_err;
638 }
639 for (i = 1; i < bnum; i++) {
640 desc = &ring->desc[ring->next_to_clean];
641 desc_cb = &ring->desc_cb[ring->next_to_clean];
b5996f11 642
9cbe9fd5 643 hns_nic_reuse_page(skb, i, ring, 0, desc_cb);
b5996f11 644 ring_ptr_move_fw(ring, next_to_clean);
645 }
646 }
647
648 /* check except process, free skb and jump the desc */
649 if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) {
650out_bnum_err:
651 *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/
652 netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n",
653 bnum, ring->max_desc_num_per_pkt,
654 length, (int)MAX_SKB_FRAGS,
655 ((u64 *)desc)[0], ((u64 *)desc)[1]);
656 ring->stats.err_bd_num++;
657 dev_kfree_skb_any(skb);
658 return -EDOM;
659 }
660
661 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
662
663 if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) {
664 netdev_err(ndev, "no valid bd,%016llx,%016llx\n",
665 ((u64 *)desc)[0], ((u64 *)desc)[1]);
666 ring->stats.non_vld_descs++;
667 dev_kfree_skb_any(skb);
668 return -EINVAL;
669 }
670
671 if (unlikely((!desc->rx.pkt_len) ||
672 hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) {
b5996f11 673 ring->stats.err_pkt_len++;
674 dev_kfree_skb_any(skb);
675 return -EFAULT;
676 }
677
678 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) {
b5996f11 679 ring->stats.l2_err++;
680 dev_kfree_skb_any(skb);
681 return -EFAULT;
682 }
683
0d6b425a
KY		 684 /* filter out multicast pkt with the same src mac as this port */
685 eh = eth_hdr(skb);
686 if (unlikely(is_multicast_ether_addr(eh->h_dest) &&
687 ether_addr_equal(ndev->dev_addr, eh->h_source))) {
688 dev_kfree_skb_any(skb);
689 return -EFAULT;
690 }
691
b5996f11 692 ring->stats.rx_pkts++;
693 ring->stats.rx_bytes += skb->len;
694
695 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L3E_B) ||
696 hnae_get_bit(bnum_flag, HNS_RXD_L4E_B))) {
b5996f11 697 ring->stats.l3l4_csum_err++;
698 return 0;
699 }
700
701 skb->ip_summed = CHECKSUM_UNNECESSARY;
702
703 return 0;
704}
705
706static void
707hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count)
708{
709 int i, ret;
710 struct hnae_desc_cb res_cbs;
711 struct hnae_desc_cb *desc_cb;
712 struct hnae_ring *ring = ring_data->ring;
713 struct net_device *ndev = ring_data->napi.dev;
714
715 for (i = 0; i < cleand_count; i++) {
716 desc_cb = &ring->desc_cb[ring->next_to_use];
717 if (desc_cb->reuse_flag) {
718 ring->stats.reuse_pg_cnt++;
719 hnae_reuse_buffer(ring, ring->next_to_use);
720 } else {
721 ret = hnae_reserve_buffer_map(ring, &res_cbs);
722 if (ret) {
723 ring->stats.sw_err_cnt++;
724 netdev_err(ndev, "hnae reserve buffer map failed.\n");
725 break;
726 }
727 hnae_replace_buffer(ring, ring->next_to_use, &res_cbs);
728 }
729
730 ring_ptr_move_fw(ring, next_to_use);
731 }
732
733 wmb(); /* make all data has been write before submit */
734 writel_relaxed(i, ring->io_base + RCB_REG_HEAD);
735}
736
737/* return error number for error or number of desc left to take
738 */
739static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data,
740 struct sk_buff *skb)
741{
742 struct net_device *ndev = ring_data->napi.dev;
743
744 skb->protocol = eth_type_trans(skb, ndev);
745 (void)napi_gro_receive(&ring_data->napi, skb);
746 ndev->last_rx = jiffies;
747}
748
749static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data,
750 int budget, void *v)
751{
752 struct hnae_ring *ring = ring_data->ring;
753 struct sk_buff *skb;
754 int num, bnum, ex_num;
755#define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
756 int recv_pkts, recv_bds, clean_count, err;
757
758 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
759 rmb(); /* make sure num taken effect before the other data is touched */
760
761 recv_pkts = 0, recv_bds = 0, clean_count = 0;
762recv:
763 while (recv_pkts < budget && recv_bds < num) {
764 /* reuse or realloc buffers*/
765 if (clean_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
766 hns_nic_alloc_rx_buffers(ring_data, clean_count);
767 clean_count = 0;
768 }
769
770 /* poll one pkg*/
771 err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum);
772 if (unlikely(!skb)) /* this fault cannot be repaired */
773 break;
774
775 recv_bds += bnum;
776 clean_count += bnum;
777 if (unlikely(err)) { /* do jump the err */
778 recv_pkts++;
779 continue;
780 }
781
782 /* do update ip stack process*/
783 ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)(
784 ring_data, skb);
785 recv_pkts++;
786 }
787
788 /* make all data has been write before submit */
b5996f11 789 if (recv_pkts < budget) {
790 ex_num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
9cbe9fd5 791
13ac695e
S		 792 if (ex_num > clean_count) {
793 num += ex_num - clean_count;
9cbe9fd5 794 rmb(); /*complete read rx ring bd number*/
b5996f11 795 goto recv;
796 }
797 }
798
13ac695e
S		 799 /* make all data has been write before submit */
800 if (clean_count > 0)
801 hns_nic_alloc_rx_buffers(ring_data, clean_count);
802
b5996f11 803 return recv_pkts;
804}
805
806static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
807{
808 struct hnae_ring *ring = ring_data->ring;
809 int num = 0;
810
811 /* for hardware bug fixed */
812 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
813
814 if (num > 0) {
815 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
816 ring_data->ring, 1);
817
818 napi_schedule(&ring_data->napi);
819 }
820}
821
822static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring,
823 int *bytes, int *pkts)
824{
825 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
826
827 (*pkts) += (desc_cb->type == DESC_TYPE_SKB);
828 (*bytes) += desc_cb->length;
829 /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
830 hnae_free_buffer_detach(ring, ring->next_to_clean);
831
832 ring_ptr_move_fw(ring, next_to_clean);
833}
834
835static int is_valid_clean_head(struct hnae_ring *ring, int h)
836{
837 int u = ring->next_to_use;
838 int c = ring->next_to_clean;
839
840 if (unlikely(h > ring->desc_num))
841 return 0;
842
843 assert(u > 0 && u < ring->desc_num);
844 assert(c > 0 && c < ring->desc_num);
845 assert(u != c && h != c); /* must be checked before call this func */
846
847 return u > c ? (h > c && h <= u) : (h > c || h <= u);
848}
849
850/* netif_tx_lock will turn down the performance, set only when necessary */
851#ifdef CONFIG_NET_POLL_CONTROLLER
852#define NETIF_TX_LOCK(ndev) netif_tx_lock(ndev)
853#define NETIF_TX_UNLOCK(ndev) netif_tx_unlock(ndev)
854#else
855#define NETIF_TX_LOCK(ndev)
856#define NETIF_TX_UNLOCK(ndev)
857#endif
858/* reclaim all desc in one budget
859 * return error or number of desc left
860 */
861static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
862 int budget, void *v)
863{
864 struct hnae_ring *ring = ring_data->ring;
865 struct net_device *ndev = ring_data->napi.dev;
866 struct netdev_queue *dev_queue;
867 struct hns_nic_priv *priv = netdev_priv(ndev);
868 int head;
869 int bytes, pkts;
870
871 NETIF_TX_LOCK(ndev);
872
873 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
874 rmb(); /* make sure head is ready before touch any data */
875
876 if (is_ring_empty(ring) || head == ring->next_to_clean) {
877 NETIF_TX_UNLOCK(ndev);
878 return 0; /* no data to poll */
879 }
880
881 if (!is_valid_clean_head(ring, head)) {
882 netdev_err(ndev, "wrong head (%d, %d-%d)\n", head,
883 ring->next_to_use, ring->next_to_clean);
884 ring->stats.io_err_cnt++;
885 NETIF_TX_UNLOCK(ndev);
886 return -EIO;
887 }
888
889 bytes = 0;
890 pkts = 0;
9cbe9fd5 891 while (head != ring->next_to_clean) {
b5996f11 892 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
9cbe9fd5 893 /* issue prefetch for next Tx descriptor */
894 prefetch(&ring->desc_cb[ring->next_to_clean]);
895 }
b5996f11 896
897 NETIF_TX_UNLOCK(ndev);
898
899 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
900 netdev_tx_completed_queue(dev_queue, pkts, bytes);
901
13ac695e
S		 902 if (unlikely(priv->link && !netif_carrier_ok(ndev)))
903 netif_carrier_on(ndev);
904
b5996f11 905 if (unlikely(pkts && netif_carrier_ok(ndev) &&
906 (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) {
907 /* Make sure that anybody stopping the queue after this
908 * sees the new next_to_clean.
909 */
910 smp_mb();
911 if (netif_tx_queue_stopped(dev_queue) &&
912 !test_bit(NIC_STATE_DOWN, &priv->state)) {
913 netif_tx_wake_queue(dev_queue);
914 ring->stats.restart_queue++;
915 }
916 }
917 return 0;
918}
919
920static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
921{
922 struct hnae_ring *ring = ring_data->ring;
1c3bae6e 923 int head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
b5996f11 924
925 if (head != ring->next_to_clean) {
926 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
927 ring_data->ring, 1);
928
929 napi_schedule(&ring_data->napi);
930 }
931}
932
933static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
934{
935 struct hnae_ring *ring = ring_data->ring;
936 struct net_device *ndev = ring_data->napi.dev;
937 struct netdev_queue *dev_queue;
938 int head;
939 int bytes, pkts;
940
941 NETIF_TX_LOCK(ndev);
942
943 head = ring->next_to_use; /* ntu :soft setted ring position*/
944 bytes = 0;
945 pkts = 0;
946 while (head != ring->next_to_clean)
947 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
948
949 NETIF_TX_UNLOCK(ndev);
950
951 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
952 netdev_tx_reset_queue(dev_queue);
953}
954
955static int hns_nic_common_poll(struct napi_struct *napi, int budget)
956{
957 struct hns_nic_ring_data *ring_data =
958 container_of(napi, struct hns_nic_ring_data, napi);
959 int clean_complete = ring_data->poll_one(
960 ring_data, budget, ring_data->ex_process);
961
962 if (clean_complete >= 0 && clean_complete < budget) {
963 napi_complete(napi);
964 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
965 ring_data->ring, 0);
4b34aa41
SL		 966 if (ring_data->fini_process)
967 ring_data->fini_process(ring_data);
9cbe9fd5 968 return 0;
b5996f11 969 }
970
971 return clean_complete;
972}
973
974static irqreturn_t hns_irq_handle(int irq, void *dev)
975{
976 struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev;
977
978 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
979 ring_data->ring, 1);
980 napi_schedule(&ring_data->napi);
981
982 return IRQ_HANDLED;
983}
984
985/**
986 *hns_nic_adjust_link - adjust net work mode by the phy stat or new param
987 *@ndev: net device
988 */
989static void hns_nic_adjust_link(struct net_device *ndev)
990{
991 struct hns_nic_priv *priv = netdev_priv(ndev);
992 struct hnae_handle *h = priv->ae_handle;
993
994 h->dev->ops->adjust_link(h, ndev->phydev->speed, ndev->phydev->duplex);
995}
996
997/**
998 *hns_nic_init_phy - init phy
999 *@ndev: net device
1000 *@h: ae handle
1001 * Return 0 on success, negative on failure
1002 */
1003int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h)
1004{
1005 struct hns_nic_priv *priv = netdev_priv(ndev);
652d39b0
KY		 1006 struct phy_device *phy_dev = h->phy_dev;
1007 int ret;
b5996f11 1008
652d39b0 1009 if (!h->phy_dev)
b5996f11 1010 return 0;
1011
652d39b0
KY		 1012 if (h->phy_if != PHY_INTERFACE_MODE_XGMII) {
1013 phy_dev->dev_flags = 0;
b5996f11 1014
652d39b0
KY		 1015 ret = phy_connect_direct(ndev, phy_dev, hns_nic_adjust_link,
1016 h->phy_if);
1017 } else {
1018 ret = phy_attach_direct(ndev, phy_dev, 0, h->phy_if);
1019 }
1020 if (unlikely(ret))
1021 return -ENODEV;
b5996f11 1022
1023 phy_dev->supported &= h->if_support;
1024 phy_dev->advertising = phy_dev->supported;
1025
1026 if (h->phy_if == PHY_INTERFACE_MODE_XGMII)
1027 phy_dev->autoneg = false;
1028
1029 priv->phy = phy_dev;
1030
1031 return 0;
1032}
1033
1034static int hns_nic_ring_open(struct net_device *netdev, int idx)
1035{
1036 struct hns_nic_priv *priv = netdev_priv(netdev);
1037 struct hnae_handle *h = priv->ae_handle;
1038
1039 napi_enable(&priv->ring_data[idx].napi);
1040
1041 enable_irq(priv->ring_data[idx].ring->irq);
1042 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0);
1043
1044 return 0;
1045}
1046
1047static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p)
1048{
1049 struct hns_nic_priv *priv = netdev_priv(ndev);
1050 struct hnae_handle *h = priv->ae_handle;
1051 struct sockaddr *mac_addr = p;
1052 int ret;
1053
1054 if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
1055 return -EADDRNOTAVAIL;
1056
1057 ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data);
1058 if (ret) {
1059 netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret);
1060 return ret;
1061 }
1062
1063 memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len);
1064
1065 return 0;
1066}
1067
1068void hns_nic_update_stats(struct net_device *netdev)
1069{
1070 struct hns_nic_priv *priv = netdev_priv(netdev);
1071 struct hnae_handle *h = priv->ae_handle;
1072
1073 h->dev->ops->update_stats(h, &netdev->stats);
1074}
1075
1076/* set mac addr if it is configed. or leave it to the AE driver */
1077static void hns_init_mac_addr(struct net_device *ndev)
1078{
1079 struct hns_nic_priv *priv = netdev_priv(ndev);
b5996f11 1080
6162928c 1081 if (!device_get_mac_address(priv->dev, ndev->dev_addr, ETH_ALEN)) {
b5996f11 1082 eth_hw_addr_random(ndev);
1083 dev_warn(priv->dev, "No valid mac, use random mac %pM",
1084 ndev->dev_addr);
1085 }
1086}
1087
1088static void hns_nic_ring_close(struct net_device *netdev, int idx)
1089{
1090 struct hns_nic_priv *priv = netdev_priv(netdev);
1091 struct hnae_handle *h = priv->ae_handle;
1092
1093 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1);
1094 disable_irq(priv->ring_data[idx].ring->irq);
1095
1096 napi_disable(&priv->ring_data[idx].napi);
1097}
1098
13ac695e 1099static void hns_set_irq_affinity(struct hns_nic_priv *priv)
b5996f11 1100{
1101 struct hnae_handle *h = priv->ae_handle;
1102 struct hns_nic_ring_data *rd;
1103 int i;
b5996f11 1104 int cpu;
1105 cpumask_t mask;
1106
13ac695e
S		 1107 /*diffrent irq banlance for 16core and 32core*/
1108 if (h->q_num == num_possible_cpus()) {
1109 for (i = 0; i < h->q_num * 2; i++) {
1110 rd = &priv->ring_data[i];
1111 if (cpu_online(rd->queue_index)) {
1112 cpumask_clear(&mask);
1113 cpu = rd->queue_index;
1114 cpumask_set_cpu(cpu, &mask);
1115 (void)irq_set_affinity_hint(rd->ring->irq,
1116 &mask);
1117 }
1118 }
1119 } else {
1120 for (i = 0; i < h->q_num; i++) {
1121 rd = &priv->ring_data[i];
1122 if (cpu_online(rd->queue_index * 2)) {
1123 cpumask_clear(&mask);
1124 cpu = rd->queue_index * 2;
1125 cpumask_set_cpu(cpu, &mask);
1126 (void)irq_set_affinity_hint(rd->ring->irq,
1127 &mask);
1128 }
1129 }
1130
1131 for (i = h->q_num; i < h->q_num * 2; i++) {
1132 rd = &priv->ring_data[i];
1133 if (cpu_online(rd->queue_index * 2 + 1)) {
1134 cpumask_clear(&mask);
1135 cpu = rd->queue_index * 2 + 1;
1136 cpumask_set_cpu(cpu, &mask);
1137 (void)irq_set_affinity_hint(rd->ring->irq,
1138 &mask);
1139 }
1140 }
1141 }
1142}
1143
1144static int hns_nic_init_irq(struct hns_nic_priv *priv)
1145{
1146 struct hnae_handle *h = priv->ae_handle;
1147 struct hns_nic_ring_data *rd;
1148 int i;
1149 int ret;
1150
b5996f11 1151 for (i = 0; i < h->q_num * 2; i++) {
1152 rd = &priv->ring_data[i];
1153
1154 if (rd->ring->irq_init_flag == RCB_IRQ_INITED)
1155 break;
1156
1157 snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN,
1158 "%s-%s%d", priv->netdev->name,
1159 (i < h->q_num ? "tx" : "rx"), rd->queue_index);
1160
1161 rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0';
1162
1163 ret = request_irq(rd->ring->irq,
1164 hns_irq_handle, 0, rd->ring->ring_name, rd);
1165 if (ret) {
1166 netdev_err(priv->netdev, "request irq(%d) fail\n",
1167 rd->ring->irq);
1168 return ret;
1169 }
1170 disable_irq(rd->ring->irq);
1171 rd->ring->irq_init_flag = RCB_IRQ_INITED;
b5996f11 1172 }
1173
13ac695e
S		 1174 /*set cpu affinity*/
1175 hns_set_irq_affinity(priv);
1176
b5996f11 1177 return 0;
1178}
1179
1180static int hns_nic_net_up(struct net_device *ndev)
1181{
1182 struct hns_nic_priv *priv = netdev_priv(ndev);
1183 struct hnae_handle *h = priv->ae_handle;
1184 int i, j, k;
1185 int ret;
1186
1187 ret = hns_nic_init_irq(priv);
1188 if (ret != 0) {
1189 netdev_err(ndev, "hns init irq failed! ret=%d\n", ret);
1190 return ret;
1191 }
1192
1193 for (i = 0; i < h->q_num * 2; i++) {
1194 ret = hns_nic_ring_open(ndev, i);
1195 if (ret)
1196 goto out_has_some_queues;
1197 }
1198
1199 for (k = 0; k < h->q_num; k++)
1200 h->dev->ops->toggle_queue_status(h->qs[k], 1);
1201
1202 ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr);
1203 if (ret)
1204 goto out_set_mac_addr_err;
1205
1206 ret = h->dev->ops->start ? h->dev->ops->start(h) : 0;
1207 if (ret)
1208 goto out_start_err;
1209
1210 if (priv->phy)
1211 phy_start(priv->phy);
1212
1213 clear_bit(NIC_STATE_DOWN, &priv->state);
1214 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
1215
1216 return 0;
1217
1218out_start_err:
1219 netif_stop_queue(ndev);
1220out_set_mac_addr_err:
1221 for (k = 0; k < h->q_num; k++)
1222 h->dev->ops->toggle_queue_status(h->qs[k], 0);
1223out_has_some_queues:
1224 for (j = i - 1; j >= 0; j--)
1225 hns_nic_ring_close(ndev, j);
1226
1227 set_bit(NIC_STATE_DOWN, &priv->state);
1228
1229 return ret;
1230}
1231
1232static void hns_nic_net_down(struct net_device *ndev)
1233{
1234 int i;
1235 struct hnae_ae_ops *ops;
1236 struct hns_nic_priv *priv = netdev_priv(ndev);
1237
1238 if (test_and_set_bit(NIC_STATE_DOWN, &priv->state))
1239 return;
1240
1241 (void)del_timer_sync(&priv->service_timer);
1242 netif_tx_stop_all_queues(ndev);
1243 netif_carrier_off(ndev);
1244 netif_tx_disable(ndev);
1245 priv->link = 0;
1246
1247 if (priv->phy)
1248 phy_stop(priv->phy);
1249
1250 ops = priv->ae_handle->dev->ops;
1251
1252 if (ops->stop)
1253 ops->stop(priv->ae_handle);
1254
1255 netif_tx_stop_all_queues(ndev);
1256
1257 for (i = priv->ae_handle->q_num - 1; i >= 0; i--) {
1258 hns_nic_ring_close(ndev, i);
1259 hns_nic_ring_close(ndev, i + priv->ae_handle->q_num);
1260
1261 /* clean tx buffers*/
1262 hns_nic_tx_clr_all_bufs(priv->ring_data + i);
1263 }
1264}
1265
1266void hns_nic_net_reset(struct net_device *ndev)
1267{
1268 struct hns_nic_priv *priv = netdev_priv(ndev);
1269 struct hnae_handle *handle = priv->ae_handle;
1270
1271 while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state))
1272 usleep_range(1000, 2000);
1273
1274 (void)hnae_reinit_handle(handle);
1275
1276 clear_bit(NIC_STATE_RESETTING, &priv->state);
1277}
1278
1279void hns_nic_net_reinit(struct net_device *netdev)
1280{
1281 struct hns_nic_priv *priv = netdev_priv(netdev);
1282
860e9538 1283 netif_trans_update(priv->netdev);
b5996f11 1284 while (test_and_set_bit(NIC_STATE_REINITING, &priv->state))
1285 usleep_range(1000, 2000);
1286
1287 hns_nic_net_down(netdev);
1288 hns_nic_net_reset(netdev);
1289 (void)hns_nic_net_up(netdev);
1290 clear_bit(NIC_STATE_REINITING, &priv->state);
1291}
1292
1293static int hns_nic_net_open(struct net_device *ndev)
1294{
1295 struct hns_nic_priv *priv = netdev_priv(ndev);
1296 struct hnae_handle *h = priv->ae_handle;
1297 int ret;
1298
1299 if (test_bit(NIC_STATE_TESTING, &priv->state))
1300 return -EBUSY;
1301
1302 priv->link = 0;
1303 netif_carrier_off(ndev);
1304
1305 ret = netif_set_real_num_tx_queues(ndev, h->q_num);
1306 if (ret < 0) {
1307 netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n",
1308 ret);
1309 return ret;
1310 }
1311
1312 ret = netif_set_real_num_rx_queues(ndev, h->q_num);
1313 if (ret < 0) {
1314 netdev_err(ndev,
1315 "netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
1316 return ret;
1317 }
1318
1319 ret = hns_nic_net_up(ndev);
1320 if (ret) {
1321 netdev_err(ndev,
1322 "hns net up fail, ret=%d!\n", ret);
1323 return ret;
1324 }
1325
1326 return 0;
1327}
1328
1329static int hns_nic_net_stop(struct net_device *ndev)
1330{
1331 hns_nic_net_down(ndev);
1332
1333 return 0;
1334}
1335
1336static void hns_tx_timeout_reset(struct hns_nic_priv *priv);
1337static void hns_nic_net_timeout(struct net_device *ndev)
1338{
1339 struct hns_nic_priv *priv = netdev_priv(ndev);
1340
1341 hns_tx_timeout_reset(priv);
1342}
1343
1344static int hns_nic_do_ioctl(struct net_device *netdev, struct ifreq *ifr,
1345 int cmd)
1346{
1347 struct hns_nic_priv *priv = netdev_priv(netdev);
1348 struct phy_device *phy_dev = priv->phy;
1349
1350 if (!netif_running(netdev))
1351 return -EINVAL;
1352
1353 if (!phy_dev)
1354 return -ENOTSUPP;
1355
1356 return phy_mii_ioctl(phy_dev, ifr, cmd);
1357}
1358
1359/* use only for netconsole to poll with the device without interrupt */
1360#ifdef CONFIG_NET_POLL_CONTROLLER
1361void hns_nic_poll_controller(struct net_device *ndev)
1362{
1363 struct hns_nic_priv *priv = netdev_priv(ndev);
1364 unsigned long flags;
1365 int i;
1366
1367 local_irq_save(flags);
1368 for (i = 0; i < priv->ae_handle->q_num * 2; i++)
1369 napi_schedule(&priv->ring_data[i].napi);
1370 local_irq_restore(flags);
1371}
1372#endif
1373
1374static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb,
1375 struct net_device *ndev)
1376{
1377 struct hns_nic_priv *priv = netdev_priv(ndev);
1378 int ret;
1379
1380 assert(skb->queue_mapping < ndev->ae_handle->q_num);
1381 ret = hns_nic_net_xmit_hw(ndev, skb,
1382 &tx_ring_data(priv, skb->queue_mapping));
1383 if (ret == NETDEV_TX_OK) {
860e9538 1384 netif_trans_update(ndev);
b5996f11 1385 ndev->stats.tx_bytes += skb->len;
1386 ndev->stats.tx_packets++;
1387 }
1388 return (netdev_tx_t)ret;
1389}
1390
1391static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu)
1392{
1393 struct hns_nic_priv *priv = netdev_priv(ndev);
1394 struct hnae_handle *h = priv->ae_handle;
1395 int ret;
1396
1397 /* MTU < 68 is an error and causes problems on some kernels */
1398 if (new_mtu < 68)
1399 return -EINVAL;
1400
1401 if (!h->dev->ops->set_mtu)
1402 return -ENOTSUPP;
1403
1404 if (netif_running(ndev)) {
1405 (void)hns_nic_net_stop(ndev);
1406 msleep(100);
1407
1408 ret = h->dev->ops->set_mtu(h, new_mtu);
1409 if (ret)
1410 netdev_err(ndev, "set mtu fail, return value %d\n",
1411 ret);
1412
1413 if (hns_nic_net_open(ndev))
1414 netdev_err(ndev, "hns net open fail\n");
1415 } else {
1416 ret = h->dev->ops->set_mtu(h, new_mtu);
1417 }
1418
1419 if (!ret)
1420 ndev->mtu = new_mtu;
1421
1422 return ret;
1423}
1424
38f616da
S		 1425static int hns_nic_set_features(struct net_device *netdev,
1426 netdev_features_t features)
1427{
1428 struct hns_nic_priv *priv = netdev_priv(netdev);
1429 struct hnae_handle *h = priv->ae_handle;
1430
1431 switch (priv->enet_ver) {
1432 case AE_VERSION_1:
1433 if (features & (NETIF_F_TSO | NETIF_F_TSO6))
1434 netdev_info(netdev, "enet v1 do not support tso!\n");
1435 break;
1436 default:
1437 if (features & (NETIF_F_TSO | NETIF_F_TSO6)) {
1438 priv->ops.fill_desc = fill_tso_desc;
1439 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
1440 /* The chip only support 7*4096 */
1441 netif_set_gso_max_size(netdev, 7 * 4096);
1442 h->dev->ops->set_tso_stats(h, 1);
1443 } else {
1444 priv->ops.fill_desc = fill_v2_desc;
1445 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1446 h->dev->ops->set_tso_stats(h, 0);
1447 }
1448 break;
1449 }
1450 netdev->features = features;
1451 return 0;
1452}
1453
1454static netdev_features_t hns_nic_fix_features(
1455 struct net_device *netdev, netdev_features_t features)
1456{
1457 struct hns_nic_priv *priv = netdev_priv(netdev);
1458
1459 switch (priv->enet_ver) {
1460 case AE_VERSION_1:
1461 features &= ~(NETIF_F_TSO | NETIF_F_TSO6 |
1462 NETIF_F_HW_VLAN_CTAG_FILTER);
1463 break;
1464 default:
1465 break;
1466 }
1467 return features;
1468}
1469
b5996f11 1470/**
1471 * nic_set_multicast_list - set mutl mac address
1472 * @netdev: net device
1473 * @p: mac address
1474 *
1475 * return void
1476 */
1477void hns_set_multicast_list(struct net_device *ndev)
1478{
1479 struct hns_nic_priv *priv = netdev_priv(ndev);
1480 struct hnae_handle *h = priv->ae_handle;
1481 struct netdev_hw_addr *ha = NULL;
1482
1483 if (!h) {
1484 netdev_err(ndev, "hnae handle is null\n");
1485 return;
1486 }
1487
1488 if (h->dev->ops->set_mc_addr) {
1489 netdev_for_each_mc_addr(ha, ndev)
1490 if (h->dev->ops->set_mc_addr(h, ha->addr))
1491 netdev_err(ndev, "set multicast fail\n");
1492 }
1493}
1494
4568637f 1495void hns_nic_set_rx_mode(struct net_device *ndev)
1496{
1497 struct hns_nic_priv *priv = netdev_priv(ndev);
1498 struct hnae_handle *h = priv->ae_handle;
1499
1500 if (h->dev->ops->set_promisc_mode) {
1501 if (ndev->flags & IFF_PROMISC)
1502 h->dev->ops->set_promisc_mode(h, 1);
1503 else
1504 h->dev->ops->set_promisc_mode(h, 0);
1505 }
1506
1507 hns_set_multicast_list(ndev);
1508}
1509
b5996f11 1510struct rtnl_link_stats64 *hns_nic_get_stats64(struct net_device *ndev,
1511 struct rtnl_link_stats64 *stats)
1512{
1513 int idx = 0;
1514 u64 tx_bytes = 0;
1515 u64 rx_bytes = 0;
1516 u64 tx_pkts = 0;
1517 u64 rx_pkts = 0;
1518 struct hns_nic_priv *priv = netdev_priv(ndev);
1519 struct hnae_handle *h = priv->ae_handle;
1520
1521 for (idx = 0; idx < h->q_num; idx++) {
1522 tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes;
1523 tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts;
1524 rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes;
1525 rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts;
1526 }
1527
1528 stats->tx_bytes = tx_bytes;
1529 stats->tx_packets = tx_pkts;
1530 stats->rx_bytes = rx_bytes;
1531 stats->rx_packets = rx_pkts;
1532
1533 stats->rx_errors = ndev->stats.rx_errors;
1534 stats->multicast = ndev->stats.multicast;
1535 stats->rx_length_errors = ndev->stats.rx_length_errors;
1536 stats->rx_crc_errors = ndev->stats.rx_crc_errors;
1537 stats->rx_missed_errors = ndev->stats.rx_missed_errors;
1538
1539 stats->tx_errors = ndev->stats.tx_errors;
1540 stats->rx_dropped = ndev->stats.rx_dropped;
1541 stats->tx_dropped = ndev->stats.tx_dropped;
1542 stats->collisions = ndev->stats.collisions;
1543 stats->rx_over_errors = ndev->stats.rx_over_errors;
1544 stats->rx_frame_errors = ndev->stats.rx_frame_errors;
1545 stats->rx_fifo_errors = ndev->stats.rx_fifo_errors;
1546 stats->tx_aborted_errors = ndev->stats.tx_aborted_errors;
1547 stats->tx_carrier_errors = ndev->stats.tx_carrier_errors;
1548 stats->tx_fifo_errors = ndev->stats.tx_fifo_errors;
1549 stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors;
1550 stats->tx_window_errors = ndev->stats.tx_window_errors;
1551 stats->rx_compressed = ndev->stats.rx_compressed;
1552 stats->tx_compressed = ndev->stats.tx_compressed;
1553
1554 return stats;
1555}
1556
1557static const struct net_device_ops hns_nic_netdev_ops = {
1558 .ndo_open = hns_nic_net_open,
1559 .ndo_stop = hns_nic_net_stop,
1560 .ndo_start_xmit = hns_nic_net_xmit,
1561 .ndo_tx_timeout = hns_nic_net_timeout,
1562 .ndo_set_mac_address = hns_nic_net_set_mac_address,
1563 .ndo_change_mtu = hns_nic_change_mtu,
1564 .ndo_do_ioctl = hns_nic_do_ioctl,
38f616da
S		 1565 .ndo_set_features = hns_nic_set_features,
1566 .ndo_fix_features = hns_nic_fix_features,
b5996f11 1567 .ndo_get_stats64 = hns_nic_get_stats64,
1568#ifdef CONFIG_NET_POLL_CONTROLLER
1569 .ndo_poll_controller = hns_nic_poll_controller,
1570#endif
4568637f 1571 .ndo_set_rx_mode = hns_nic_set_rx_mode,
b5996f11 1572};
1573
1574static void hns_nic_update_link_status(struct net_device *netdev)
1575{
1576 struct hns_nic_priv *priv = netdev_priv(netdev);
1577
1578 struct hnae_handle *h = priv->ae_handle;
1579 int state = 1;
1580
1581 if (priv->phy) {
1582 if (!genphy_update_link(priv->phy))
1583 state = priv->phy->link;
1584 else
1585 state = 0;
1586 }
1587 state = state && h->dev->ops->get_status(h);
1588
1589 if (state != priv->link) {
1590 if (state) {
1591 netif_carrier_on(netdev);
1592 netif_tx_wake_all_queues(netdev);
1593 netdev_info(netdev, "link up\n");
1594 } else {
1595 netif_carrier_off(netdev);
1596 netdev_info(netdev, "link down\n");
1597 }
1598 priv->link = state;
1599 }
1600}
1601
1602/* for dumping key regs*/
1603static void hns_nic_dump(struct hns_nic_priv *priv)
1604{
1605 struct hnae_handle *h = priv->ae_handle;
1606 struct hnae_ae_ops *ops = h->dev->ops;
1607 u32 *data, reg_num, i;
1608
1609 if (ops->get_regs_len && ops->get_regs) {
1610 reg_num = ops->get_regs_len(priv->ae_handle);
1611 reg_num = (reg_num + 3ul) & ~3ul;
1612 data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL);
1613 if (data) {
1614 ops->get_regs(priv->ae_handle, data);
1615 for (i = 0; i < reg_num; i += 4)
1616 pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
1617 i, data[i], data[i + 1],
1618 data[i + 2], data[i + 3]);
1619 kfree(data);
1620 }
1621 }
1622
1623 for (i = 0; i < h->q_num; i++) {
1624 pr_info("tx_queue%d_next_to_clean:%d\n",
1625 i, h->qs[i]->tx_ring.next_to_clean);
1626 pr_info("tx_queue%d_next_to_use:%d\n",
1627 i, h->qs[i]->tx_ring.next_to_use);
1628 pr_info("rx_queue%d_next_to_clean:%d\n",
1629 i, h->qs[i]->rx_ring.next_to_clean);
1630 pr_info("rx_queue%d_next_to_use:%d\n",
1631 i, h->qs[i]->rx_ring.next_to_use);
1632 }
1633}
1634
1635/* for resetting suntask*/
1636static void hns_nic_reset_subtask(struct hns_nic_priv *priv)
1637{
1638 enum hnae_port_type type = priv->ae_handle->port_type;
1639
1640 if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state))
1641 return;
1642 clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
1643
1644 /* If we're already down, removing or resetting, just bail */
1645 if (test_bit(NIC_STATE_DOWN, &priv->state) ||
1646 test_bit(NIC_STATE_REMOVING, &priv->state) ||
1647 test_bit(NIC_STATE_RESETTING, &priv->state))
1648 return;
1649
1650 hns_nic_dump(priv);
13ac695e
S		 1651 netdev_info(priv->netdev, "try to reset %s port!\n",
1652 (type == HNAE_PORT_DEBUG ? "debug" : "service"));
b5996f11 1653
1654 rtnl_lock();
90a505b9 1655 /* put off any impending NetWatchDogTimeout */
860e9538 1656 netif_trans_update(priv->netdev);
90a505b9 1657
13ac695e 1658 if (type == HNAE_PORT_DEBUG) {
b5996f11 1659 hns_nic_net_reinit(priv->netdev);
13ac695e
S		 1660 } else {
1661 netif_carrier_off(priv->netdev);
1662 netif_tx_disable(priv->netdev);
1663 }
b5996f11 1664 rtnl_unlock();
1665}
1666
1667/* for doing service complete*/
1668static void hns_nic_service_event_complete(struct hns_nic_priv *priv)
1669{
13ac695e 1670 WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state));
b5996f11 1671
1672 smp_mb__before_atomic();
1673 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
1674}
1675
1676static void hns_nic_service_task(struct work_struct *work)
1677{
1678 struct hns_nic_priv *priv
1679 = container_of(work, struct hns_nic_priv, service_task);
1680 struct hnae_handle *h = priv->ae_handle;
1681
1682 hns_nic_update_link_status(priv->netdev);
1683 h->dev->ops->update_led_status(h);
1684 hns_nic_update_stats(priv->netdev);
1685
1686 hns_nic_reset_subtask(priv);
1687 hns_nic_service_event_complete(priv);
1688}
1689
1690static void hns_nic_task_schedule(struct hns_nic_priv *priv)
1691{
1692 if (!test_bit(NIC_STATE_DOWN, &priv->state) &&
1693 !test_bit(NIC_STATE_REMOVING, &priv->state) &&
1694 !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state))
1695 (void)schedule_work(&priv->service_task);
1696}
1697
1698static void hns_nic_service_timer(unsigned long data)
1699{
1700 struct hns_nic_priv *priv = (struct hns_nic_priv *)data;
1701
1702 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
1703
1704 hns_nic_task_schedule(priv);
1705}
1706
1707/**
1708 * hns_tx_timeout_reset - initiate reset due to Tx timeout
1709 * @priv: driver private struct
1710 **/
1711static void hns_tx_timeout_reset(struct hns_nic_priv *priv)
1712{
1713 /* Do the reset outside of interrupt context */
1714 if (!test_bit(NIC_STATE_DOWN, &priv->state)) {
1715 set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
1716 netdev_warn(priv->netdev,
1717 "initiating reset due to tx timeout(%llu,0x%lx)\n",
1718 priv->tx_timeout_count, priv->state);
1719 priv->tx_timeout_count++;
1720 hns_nic_task_schedule(priv);
1721 }
1722}
1723
1724static int hns_nic_init_ring_data(struct hns_nic_priv *priv)
1725{
1726 struct hnae_handle *h = priv->ae_handle;
1727 struct hns_nic_ring_data *rd;
4b34aa41 1728 bool is_ver1 = AE_IS_VER1(priv->enet_ver);
b5996f11 1729 int i;
1730
1731 if (h->q_num > NIC_MAX_Q_PER_VF) {
1732 netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num);
1733 return -EINVAL;
1734 }
1735
1736 priv->ring_data = kzalloc(h->q_num * sizeof(*priv->ring_data) * 2,
1737 GFP_KERNEL);
1738 if (!priv->ring_data)
1739 return -ENOMEM;
1740
1741 for (i = 0; i < h->q_num; i++) {
1742 rd = &priv->ring_data[i];
1743 rd->queue_index = i;
1744 rd->ring = &h->qs[i]->tx_ring;
1745 rd->poll_one = hns_nic_tx_poll_one;
4b34aa41 1746 rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro : NULL;
b5996f11 1747
1748 netif_napi_add(priv->netdev, &rd->napi,
1749 hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM);
1750 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1751 }
1752 for (i = h->q_num; i < h->q_num * 2; i++) {
1753 rd = &priv->ring_data[i];
1754 rd->queue_index = i - h->q_num;
1755 rd->ring = &h->qs[i - h->q_num]->rx_ring;
1756 rd->poll_one = hns_nic_rx_poll_one;
1757 rd->ex_process = hns_nic_rx_up_pro;
4b34aa41 1758 rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro : NULL;
b5996f11 1759
1760 netif_napi_add(priv->netdev, &rd->napi,
1761 hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM);
1762 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1763 }
1764
1765 return 0;
1766}
1767
1768static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv)
1769{
1770 struct hnae_handle *h = priv->ae_handle;
1771 int i;
1772
1773 for (i = 0; i < h->q_num * 2; i++) {
1774 netif_napi_del(&priv->ring_data[i].napi);
1775 if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) {
13ac695e
S		 1776 (void)irq_set_affinity_hint(
1777 priv->ring_data[i].ring->irq,
1778 NULL);
b5996f11 1779 free_irq(priv->ring_data[i].ring->irq,
1780 &priv->ring_data[i]);
1781 }
1782
1783 priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED;
1784 }
1785 kfree(priv->ring_data);
1786}
1787
13ac695e
S		 1788static void hns_nic_set_priv_ops(struct net_device *netdev)
1789{
1790 struct hns_nic_priv *priv = netdev_priv(netdev);
64353af6 1791 struct hnae_handle *h = priv->ae_handle;
13ac695e
S		 1792
1793 if (AE_IS_VER1(priv->enet_ver)) {
1794 priv->ops.fill_desc = fill_desc;
1795 priv->ops.get_rxd_bnum = get_rx_desc_bnum;
1796 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1797 } else {
1798 priv->ops.get_rxd_bnum = get_v2rx_desc_bnum;
64353af6
S		 1799 if ((netdev->features & NETIF_F_TSO) ||
1800 (netdev->features & NETIF_F_TSO6)) {
1801 priv->ops.fill_desc = fill_tso_desc;
1802 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
1803 /* This chip only support 7*4096 */
1804 netif_set_gso_max_size(netdev, 7 * 4096);
1805 h->dev->ops->set_tso_stats(h, 1);
1806 } else {
1807 priv->ops.fill_desc = fill_v2_desc;
1808 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
1809 }
13ac695e
S		 1810 }
1811}
1812
b5996f11 1813static int hns_nic_try_get_ae(struct net_device *ndev)
1814{
1815 struct hns_nic_priv *priv = netdev_priv(ndev);
1816 struct hnae_handle *h;
1817 int ret;
1818
1819 h = hnae_get_handle(&priv->netdev->dev,
7b2acae6 1820 priv->fwnode, priv->port_id, NULL);
b5996f11 1821 if (IS_ERR_OR_NULL(h)) {
daa8cfd9 1822 ret = -ENODEV;
b5996f11 1823 dev_dbg(priv->dev, "has not handle, register notifier!\n");
1824 goto out;
1825 }
1826 priv->ae_handle = h;
1827
1828 ret = hns_nic_init_phy(ndev, h);
1829 if (ret) {
1830 dev_err(priv->dev, "probe phy device fail!\n");
1831 goto out_init_phy;
1832 }
1833
1834 ret = hns_nic_init_ring_data(priv);
1835 if (ret) {
1836 ret = -ENOMEM;
1837 goto out_init_ring_data;
1838 }
1839
13ac695e
S		 1840 hns_nic_set_priv_ops(ndev);
1841
b5996f11 1842 ret = register_netdev(ndev);
1843 if (ret) {
1844 dev_err(priv->dev, "probe register netdev fail!\n");
1845 goto out_reg_ndev_fail;
1846 }
1847 return 0;
1848
1849out_reg_ndev_fail:
1850 hns_nic_uninit_ring_data(priv);
1851 priv->ring_data = NULL;
1852out_init_phy:
1853out_init_ring_data:
1854 hnae_put_handle(priv->ae_handle);
1855 priv->ae_handle = NULL;
1856out:
1857 return ret;
1858}
1859
1860static int hns_nic_notifier_action(struct notifier_block *nb,
1861 unsigned long action, void *data)
1862{
1863 struct hns_nic_priv *priv =
1864 container_of(nb, struct hns_nic_priv, notifier_block);
1865
1866 assert(action == HNAE_AE_REGISTER);
1867
1868 if (!hns_nic_try_get_ae(priv->netdev)) {
1869 hnae_unregister_notifier(&priv->notifier_block);
1870 priv->notifier_block.notifier_call = NULL;
1871 }
1872 return 0;
1873}
1874
1875static int hns_nic_dev_probe(struct platform_device *pdev)
1876{
1877 struct device *dev = &pdev->dev;
1878 struct net_device *ndev;
1879 struct hns_nic_priv *priv;
406adee9 1880 u32 port_id;
b5996f11 1881 int ret;
1882
1883 ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF);
1884 if (!ndev)
1885 return -ENOMEM;
1886
1887 platform_set_drvdata(pdev, ndev);
1888
1889 priv = netdev_priv(ndev);
1890 priv->dev = dev;
1891 priv->netdev = ndev;
1892
63434888
KY		 1893 if (dev_of_node(dev)) {
1894 struct device_node *ae_node;
b5996f11 1895
63434888
KY		 1896 if (of_device_is_compatible(dev->of_node,
1897 "hisilicon,hns-nic-v1"))
1898 priv->enet_ver = AE_VERSION_1;
1899 else
1900 priv->enet_ver = AE_VERSION_2;
1901
1902 ae_node = of_parse_phandle(dev->of_node, "ae-handle", 0);
1903 if (IS_ERR_OR_NULL(ae_node)) {
1904 ret = PTR_ERR(ae_node);
1905 dev_err(dev, "not find ae-handle\n");
1906 goto out_read_prop_fail;
1907 }
1908 priv->fwnode = &ae_node->fwnode;
1909 } else if (is_acpi_node(dev->fwnode)) {
1910 struct acpi_reference_args args;
1911
1912 if (acpi_dev_found(hns_enet_acpi_match[0].id))
1913 priv->enet_ver = AE_VERSION_1;
1914 else if (acpi_dev_found(hns_enet_acpi_match[1].id))
1915 priv->enet_ver = AE_VERSION_2;
1916 else
1917 return -ENXIO;
1918
1919 /* try to find port-idx-in-ae first */
1920 ret = acpi_node_get_property_reference(dev->fwnode,
1921 "ae-handle", 0, &args);
1922 if (ret) {
1923 dev_err(dev, "not find ae-handle\n");
1924 goto out_read_prop_fail;
1925 }
1926 priv->fwnode = acpi_fwnode_handle(args.adev);
1927 } else {
1928 dev_err(dev, "cannot read cfg data from OF or acpi\n");
1929 return -ENXIO;
48189d6a 1930 }
7b2acae6 1931
6162928c 1932 ret = device_property_read_u32(dev, "port-idx-in-ae", &port_id);
406adee9
YZZ		 1933 if (ret) {
1934 /* only for old code compatible */
6162928c 1935 ret = device_property_read_u32(dev, "port-id", &port_id);
406adee9
YZZ		 1936 if (ret)
1937 goto out_read_prop_fail;
1938 /* for old dts, we need to caculate the port offset */
1939 port_id = port_id < HNS_SRV_OFFSET ? port_id + HNS_DEBUG_OFFSET
1940 : port_id - HNS_SRV_OFFSET;
1941 }
1942 priv->port_id = port_id;
b5996f11 1943
1944 hns_init_mac_addr(ndev);
1945
1946 ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT;
1947 ndev->priv_flags |= IFF_UNICAST_FLT;
1948 ndev->netdev_ops = &hns_nic_netdev_ops;
1949 hns_ethtool_set_ops(ndev);
13ac695e 1950
b5996f11 1951 ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1952 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
1953 NETIF_F_GRO;
1954 ndev->vlan_features |=
1955 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM;
1956 ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO;
1957
13ac695e
S		 1958 switch (priv->enet_ver) {
1959 case AE_VERSION_2:
64353af6 1960 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
13ac695e
S		 1961 ndev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
1962 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
64353af6 1963 NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6;
13ac695e
S		 1964 break;
1965 default:
1966 break;
1967 }
1968
b5996f11 1969 SET_NETDEV_DEV(ndev, dev);
1970
1971 if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)))
1972 dev_dbg(dev, "set mask to 64bit\n");
1973 else
1974 dev_err(dev, "set mask to 32bit fail!\n");
1975
1976 /* carrier off reporting is important to ethtool even BEFORE open */
1977 netif_carrier_off(ndev);
1978
1979 setup_timer(&priv->service_timer, hns_nic_service_timer,
1980 (unsigned long)priv);
1981 INIT_WORK(&priv->service_task, hns_nic_service_task);
1982
1983 set_bit(NIC_STATE_SERVICE_INITED, &priv->state);
1984 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
1985 set_bit(NIC_STATE_DOWN, &priv->state);
1986
1987 if (hns_nic_try_get_ae(priv->netdev)) {
1988 priv->notifier_block.notifier_call = hns_nic_notifier_action;
1989 ret = hnae_register_notifier(&priv->notifier_block);
1990 if (ret) {
1991 dev_err(dev, "register notifier fail!\n");
1992 goto out_notify_fail;
1993 }
1994 dev_dbg(dev, "has not handle, register notifier!\n");
1995 }
1996
1997 return 0;
1998
1999out_notify_fail:
2000 (void)cancel_work_sync(&priv->service_task);
48189d6a 2001out_read_prop_fail:
b5996f11 2002 free_netdev(ndev);
2003 return ret;
2004}
2005
2006static int hns_nic_dev_remove(struct platform_device *pdev)
2007{
2008 struct net_device *ndev = platform_get_drvdata(pdev);
2009 struct hns_nic_priv *priv = netdev_priv(ndev);
2010
2011 if (ndev->reg_state != NETREG_UNINITIALIZED)
2012 unregister_netdev(ndev);
2013
2014 if (priv->ring_data)
2015 hns_nic_uninit_ring_data(priv);
2016 priv->ring_data = NULL;
2017
2018 if (priv->phy)
2019 phy_disconnect(priv->phy);
2020 priv->phy = NULL;
2021
2022 if (!IS_ERR_OR_NULL(priv->ae_handle))
2023 hnae_put_handle(priv->ae_handle);
2024 priv->ae_handle = NULL;
2025 if (priv->notifier_block.notifier_call)
2026 hnae_unregister_notifier(&priv->notifier_block);
2027 priv->notifier_block.notifier_call = NULL;
2028
2029 set_bit(NIC_STATE_REMOVING, &priv->state);
2030 (void)cancel_work_sync(&priv->service_task);
2031
2032 free_netdev(ndev);
2033 return 0;
2034}
2035
2036static const struct of_device_id hns_enet_of_match[] = {
2037 {.compatible = "hisilicon,hns-nic-v1",},
2038 {.compatible = "hisilicon,hns-nic-v2",},
2039 {},
2040};
2041
2042MODULE_DEVICE_TABLE(of, hns_enet_of_match);
2043
2044static struct platform_driver hns_nic_dev_driver = {
2045 .driver = {
2046 .name = "hns-nic",
b5996f11 2047 .of_match_table = hns_enet_of_match,
63434888 2048 .acpi_match_table = ACPI_PTR(hns_enet_acpi_match),
b5996f11 2049 },
2050 .probe = hns_nic_dev_probe,
2051 .remove = hns_nic_dev_remove,
2052};
2053
2054module_platform_driver(hns_nic_dev_driver);
2055
2056MODULE_DESCRIPTION("HISILICON HNS Ethernet driver");
2057MODULE_AUTHOR("Hisilicon, Inc.");
2058MODULE_LICENSE("GPL");
2059MODULE_ALIAS("platform:hns-nic");
Linux kernel - Deliverables
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