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net: hns: Avoid net reset caused by pause frames storm
[mirror_ubuntu-jammy-kernel.git] / drivers / net / ethernet / hisilicon / hns / hns_enet.c
CommitLineData
b5996f11 1/*
2 * Copyright (c) 2014-2015 Hisilicon Limited.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 */
9
10#include <linux/clk.h>
11#include <linux/cpumask.h>
12#include <linux/etherdevice.h>
13#include <linux/if_vlan.h>
14#include <linux/interrupt.h>
15#include <linux/io.h>
16#include <linux/ip.h>
17#include <linux/ipv6.h>
18#include <linux/module.h>
19#include <linux/phy.h>
20#include <linux/platform_device.h>
21#include <linux/skbuff.h>
22
23#include "hnae.h"
24#include "hns_enet.h"
44770e11 25#include "hns_dsaf_mac.h"
b5996f11 26
27#define NIC_MAX_Q_PER_VF 16
28#define HNS_NIC_TX_TIMEOUT (5 * HZ)
29
30#define SERVICE_TIMER_HZ (1 * HZ)
31
32#define NIC_TX_CLEAN_MAX_NUM 256
33#define NIC_RX_CLEAN_MAX_NUM 64
34
b5996f11 35#define RCB_IRQ_NOT_INITED 0
36#define RCB_IRQ_INITED 1
9cbe9fd5 37#define HNS_BUFFER_SIZE_2048 2048
b5996f11 38
13ac695e
S		 39#define BD_MAX_SEND_SIZE 8191
40#define SKB_TMP_LEN(SKB) \
41 (((SKB)->transport_header - (SKB)->mac_header) + tcp_hdrlen(SKB))
42
2e9361ef
YL		 43static void fill_v2_desc_hw(struct hnae_ring *ring, void *priv, int size,
44 int send_sz, dma_addr_t dma, int frag_end,
45 int buf_num, enum hns_desc_type type, int mtu)
13ac695e
S		 46{
47 struct hnae_desc *desc = &ring->desc[ring->next_to_use];
48 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
49 struct iphdr *iphdr;
50 struct ipv6hdr *ipv6hdr;
51 struct sk_buff *skb;
13ac695e
S		 52 __be16 protocol;
53 u8 bn_pid = 0;
54 u8 rrcfv = 0;
55 u8 ip_offset = 0;
56 u8 tvsvsn = 0;
57 u16 mss = 0;
58 u8 l4_len = 0;
59 u16 paylen = 0;
60
61 desc_cb->priv = priv;
62 desc_cb->length = size;
63 desc_cb->dma = dma;
64 desc_cb->type = type;
65
66 desc->addr = cpu_to_le64(dma);
2e9361ef 67 desc->tx.send_size = cpu_to_le16((u16)send_sz);
13ac695e 68
f8a1a636 69 /* config bd buffer end */
13ac695e
S		 70 hnae_set_bit(rrcfv, HNSV2_TXD_VLD_B, 1);
71 hnae_set_field(bn_pid, HNSV2_TXD_BUFNUM_M, 0, buf_num - 1);
72
f8a1a636
SL		 73 /* fill port_id in the tx bd for sending management pkts */
74 hnae_set_field(bn_pid, HNSV2_TXD_PORTID_M,
75 HNSV2_TXD_PORTID_S, ring->q->handle->dport_id);
76
13ac695e
S		 77 if (type == DESC_TYPE_SKB) {
78 skb = (struct sk_buff *)priv;
79
80 if (skb->ip_summed == CHECKSUM_PARTIAL) {
81 skb_reset_mac_len(skb);
82 protocol = skb->protocol;
83 ip_offset = ETH_HLEN;
84
85 if (protocol == htons(ETH_P_8021Q)) {
86 ip_offset += VLAN_HLEN;
87 protocol = vlan_get_protocol(skb);
88 skb->protocol = protocol;
89 }
90
91 if (skb->protocol == htons(ETH_P_IP)) {
92 iphdr = ip_hdr(skb);
93 hnae_set_bit(rrcfv, HNSV2_TXD_L3CS_B, 1);
94 hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1);
95
96 /* check for tcp/udp header */
0b51b1dc
DH		 97 if (iphdr->protocol == IPPROTO_TCP &&
98 skb_is_gso(skb)) {
13ac695e
S		 99 hnae_set_bit(tvsvsn,
100 HNSV2_TXD_TSE_B, 1);
13ac695e 101 l4_len = tcp_hdrlen(skb);
0b51b1dc
DH		 102 mss = skb_shinfo(skb)->gso_size;
103 paylen = skb->len - SKB_TMP_LEN(skb);
13ac695e
S		 104 }
105 } else if (skb->protocol == htons(ETH_P_IPV6)) {
106 hnae_set_bit(tvsvsn, HNSV2_TXD_IPV6_B, 1);
107 ipv6hdr = ipv6_hdr(skb);
108 hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1);
109
110 /* check for tcp/udp header */
0b51b1dc
DH		 111 if (ipv6hdr->nexthdr == IPPROTO_TCP &&
112 skb_is_gso(skb) && skb_is_gso_v6(skb)) {
13ac695e
S		 113 hnae_set_bit(tvsvsn,
114 HNSV2_TXD_TSE_B, 1);
13ac695e 115 l4_len = tcp_hdrlen(skb);
0b51b1dc
DH		 116 mss = skb_shinfo(skb)->gso_size;
117 paylen = skb->len - SKB_TMP_LEN(skb);
13ac695e
S		 118 }
119 }
120 desc->tx.ip_offset = ip_offset;
121 desc->tx.tse_vlan_snap_v6_sctp_nth = tvsvsn;
122 desc->tx.mss = cpu_to_le16(mss);
123 desc->tx.l4_len = l4_len;
124 desc->tx.paylen = cpu_to_le16(paylen);
125 }
126 }
127
128 hnae_set_bit(rrcfv, HNSV2_TXD_FE_B, frag_end);
129
130 desc->tx.bn_pid = bn_pid;
131 desc->tx.ra_ri_cs_fe_vld = rrcfv;
132
133 ring_ptr_move_fw(ring, next_to_use);
134}
135
2e9361ef
YL		 136static void fill_v2_desc(struct hnae_ring *ring, void *priv,
137 int size, dma_addr_t dma, int frag_end,
138 int buf_num, enum hns_desc_type type, int mtu)
139{
140 fill_v2_desc_hw(ring, priv, size, size, dma, frag_end,
141 buf_num, type, mtu);
142}
143
63434888
KY		 144static const struct acpi_device_id hns_enet_acpi_match[] = {
145 { "HISI00C1", 0 },
146 { "HISI00C2", 0 },
147 { },
148};
149MODULE_DEVICE_TABLE(acpi, hns_enet_acpi_match);
150
b5996f11 151static void fill_desc(struct hnae_ring *ring, void *priv,
152 int size, dma_addr_t dma, int frag_end,
13ac695e 153 int buf_num, enum hns_desc_type type, int mtu)
b5996f11 154{
155 struct hnae_desc *desc = &ring->desc[ring->next_to_use];
156 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
157 struct sk_buff *skb;
158 __be16 protocol;
159 u32 ip_offset;
160 u32 asid_bufnum_pid = 0;
161 u32 flag_ipoffset = 0;
162
163 desc_cb->priv = priv;
164 desc_cb->length = size;
165 desc_cb->dma = dma;
166 desc_cb->type = type;
167
168 desc->addr = cpu_to_le64(dma);
169 desc->tx.send_size = cpu_to_le16((u16)size);
170
171 /*config bd buffer end */
172 flag_ipoffset |= 1 << HNS_TXD_VLD_B;
173
174 asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S;
175
176 if (type == DESC_TYPE_SKB) {
177 skb = (struct sk_buff *)priv;
178
179 if (skb->ip_summed == CHECKSUM_PARTIAL) {
180 protocol = skb->protocol;
181 ip_offset = ETH_HLEN;
182
183 /*if it is a SW VLAN check the next protocol*/
184 if (protocol == htons(ETH_P_8021Q)) {
185 ip_offset += VLAN_HLEN;
186 protocol = vlan_get_protocol(skb);
187 skb->protocol = protocol;
188 }
189
190 if (skb->protocol == htons(ETH_P_IP)) {
191 flag_ipoffset |= 1 << HNS_TXD_L3CS_B;
192 /* check for tcp/udp header */
193 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
194
195 } else if (skb->protocol == htons(ETH_P_IPV6)) {
196 /* ipv6 has not l3 cs, check for L4 header */
197 flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
198 }
199
200 flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S;
201 }
202 }
203
204 flag_ipoffset |= frag_end << HNS_TXD_FE_B;
205
206 desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid);
207 desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset);
208
209 ring_ptr_move_fw(ring, next_to_use);
210}
211
212static void unfill_desc(struct hnae_ring *ring)
213{
214 ring_ptr_move_bw(ring, next_to_use);
215}
216
13ac695e
S		 217static int hns_nic_maybe_stop_tx(
218 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
b5996f11 219{
13ac695e
S		 220 struct sk_buff *skb = *out_skb;
221 struct sk_buff *new_skb = NULL;
b5996f11 222 int buf_num;
b5996f11 223
224 /* no. of segments (plus a header) */
225 buf_num = skb_shinfo(skb)->nr_frags + 1;
226
227 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
13ac695e
S		 228 if (ring_space(ring) < 1)
229 return -EBUSY;
b5996f11 230
231 new_skb = skb_copy(skb, GFP_ATOMIC);
13ac695e
S		 232 if (!new_skb)
233 return -ENOMEM;
b5996f11 234
235 dev_kfree_skb_any(skb);
13ac695e 236 *out_skb = new_skb;
b5996f11 237 buf_num = 1;
b5996f11 238 } else if (buf_num > ring_space(ring)) {
13ac695e
S		 239 return -EBUSY;
240 }
241
242 *bnum = buf_num;
243 return 0;
244}
245
64353af6
S		 246static int hns_nic_maybe_stop_tso(
247 struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
248{
249 int i;
250 int size;
251 int buf_num;
252 int frag_num;
253 struct sk_buff *skb = *out_skb;
254 struct sk_buff *new_skb = NULL;
255 struct skb_frag_struct *frag;
256
257 size = skb_headlen(skb);
258 buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
259
260 frag_num = skb_shinfo(skb)->nr_frags;
261 for (i = 0; i < frag_num; i++) {
262 frag = &skb_shinfo(skb)->frags[i];
263 size = skb_frag_size(frag);
264 buf_num += (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
265 }
266
267 if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
268 buf_num = (skb->len + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
269 if (ring_space(ring) < buf_num)
270 return -EBUSY;
271 /* manual split the send packet */
272 new_skb = skb_copy(skb, GFP_ATOMIC);
273 if (!new_skb)
274 return -ENOMEM;
275 dev_kfree_skb_any(skb);
276 *out_skb = new_skb;
277
278 } else if (ring_space(ring) < buf_num) {
279 return -EBUSY;
280 }
281
282 *bnum = buf_num;
283 return 0;
284}
285
286static void fill_tso_desc(struct hnae_ring *ring, void *priv,
287 int size, dma_addr_t dma, int frag_end,
288 int buf_num, enum hns_desc_type type, int mtu)
289{
290 int frag_buf_num;
291 int sizeoflast;
292 int k;
293
294 frag_buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
295 sizeoflast = size % BD_MAX_SEND_SIZE;
296 sizeoflast = sizeoflast ? sizeoflast : BD_MAX_SEND_SIZE;
297
298 /* when the frag size is bigger than hardware, split this frag */
299 for (k = 0; k < frag_buf_num; k++)
2e9361ef
YL		 300 fill_v2_desc_hw(ring, priv, k == 0 ? size : 0,
301 (k == frag_buf_num - 1) ?
64353af6 302 sizeoflast : BD_MAX_SEND_SIZE,
2e9361ef
YL		 303 dma + BD_MAX_SEND_SIZE * k,
304 frag_end && (k == frag_buf_num - 1) ? 1 : 0,
305 buf_num,
306 (type == DESC_TYPE_SKB && !k) ?
64353af6 307 DESC_TYPE_SKB : DESC_TYPE_PAGE,
2e9361ef 308 mtu);
64353af6
S		 309}
310
27463ad9
YL		 311netdev_tx_t hns_nic_net_xmit_hw(struct net_device *ndev,
312 struct sk_buff *skb,
313 struct hns_nic_ring_data *ring_data)
13ac695e
S		 314{
315 struct hns_nic_priv *priv = netdev_priv(ndev);
13ac695e 316 struct hnae_ring *ring = ring_data->ring;
b85ea006 317 struct device *dev = ring_to_dev(ring);
13ac695e
S		 318 struct netdev_queue *dev_queue;
319 struct skb_frag_struct *frag;
320 int buf_num;
321 int seg_num;
322 dma_addr_t dma;
323 int size, next_to_use;
324 int i;
325
326 switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) {
327 case -EBUSY:
b5996f11 328 ring->stats.tx_busy++;
329 goto out_net_tx_busy;
13ac695e
S		 330 case -ENOMEM:
331 ring->stats.sw_err_cnt++;
332 netdev_err(ndev, "no memory to xmit!\n");
333 goto out_err_tx_ok;
334 default:
335 break;
b5996f11 336 }
13ac695e
S		 337
338 /* no. of segments (plus a header) */
339 seg_num = skb_shinfo(skb)->nr_frags + 1;
b5996f11 340 next_to_use = ring->next_to_use;
341
342 /* fill the first part */
343 size = skb_headlen(skb);
344 dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE);
345 if (dma_mapping_error(dev, dma)) {
346 netdev_err(ndev, "TX head DMA map failed\n");
347 ring->stats.sw_err_cnt++;
348 goto out_err_tx_ok;
349 }
13ac695e
S		 350 priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0,
351 buf_num, DESC_TYPE_SKB, ndev->mtu);
b5996f11 352
353 /* fill the fragments */
13ac695e 354 for (i = 1; i < seg_num; i++) {
b5996f11 355 frag = &skb_shinfo(skb)->frags[i - 1];
356 size = skb_frag_size(frag);
357 dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
358 if (dma_mapping_error(dev, dma)) {
359 netdev_err(ndev, "TX frag(%d) DMA map failed\n", i);
360 ring->stats.sw_err_cnt++;
361 goto out_map_frag_fail;
362 }
13ac695e
S		 363 priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma,
364 seg_num - 1 == i ? 1 : 0, buf_num,
365 DESC_TYPE_PAGE, ndev->mtu);
b5996f11 366 }
367
368 /*complete translate all packets*/
369 dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping);
370 netdev_tx_sent_queue(dev_queue, skb->len);
371
27463ad9
YL		 372 netif_trans_update(ndev);
373 ndev->stats.tx_bytes += skb->len;
374 ndev->stats.tx_packets++;
375
b5996f11 376 wmb(); /* commit all data before submit */
377 assert(skb->queue_mapping < priv->ae_handle->q_num);
378 hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num);
379 ring->stats.tx_pkts++;
380 ring->stats.tx_bytes += skb->len;
381
382 return NETDEV_TX_OK;
383
384out_map_frag_fail:
385
13ac695e 386 while (ring->next_to_use != next_to_use) {
b5996f11 387 unfill_desc(ring);
13ac695e
S		 388 if (ring->next_to_use != next_to_use)
389 dma_unmap_page(dev,
390 ring->desc_cb[ring->next_to_use].dma,
391 ring->desc_cb[ring->next_to_use].length,
392 DMA_TO_DEVICE);
393 else
394 dma_unmap_single(dev,
395 ring->desc_cb[next_to_use].dma,
396 ring->desc_cb[next_to_use].length,
397 DMA_TO_DEVICE);
b5996f11 398 }
399
b5996f11 400out_err_tx_ok:
401
402 dev_kfree_skb_any(skb);
403 return NETDEV_TX_OK;
404
405out_net_tx_busy:
406
407 netif_stop_subqueue(ndev, skb->queue_mapping);
408
409 /* Herbert's original patch had:
410 * smp_mb__after_netif_stop_queue();
411 * but since that doesn't exist yet, just open code it.
412 */
413 smp_mb();
414 return NETDEV_TX_BUSY;
415}
416
9cbe9fd5 417static void hns_nic_reuse_page(struct sk_buff *skb, int i,
418 struct hnae_ring *ring, int pull_len,
419 struct hnae_desc_cb *desc_cb)
b5996f11 420{
9cbe9fd5 421 struct hnae_desc *desc;
ac4a5b52
HT		 422 u32 truesize;
423 int size;
9cbe9fd5 424 int last_offset;
be78a690
AB		 425 bool twobufs;
426
b4957ab0
S		 427 twobufs = ((PAGE_SIZE < 8192) &&
428 hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048);
9cbe9fd5 429
430 desc = &ring->desc[ring->next_to_clean];
431 size = le16_to_cpu(desc->rx.size);
432
be78a690 433 if (twobufs) {
9cbe9fd5 434 truesize = hnae_buf_size(ring);
435 } else {
436 truesize = ALIGN(size, L1_CACHE_BYTES);
437 last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
438 }
439
9cbe9fd5 440 skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len,
b1ccd4c0 441 size - pull_len, truesize);
9cbe9fd5 442
b5996f11 443 /* avoid re-using remote pages,flag default unreuse */
be78a690
AB		 444 if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id()))
445 return;
446
447 if (twobufs) {
448 /* if we are only owner of page we can reuse it */
449 if (likely(page_count(desc_cb->priv) == 1)) {
450 /* flip page offset to other buffer */
451 desc_cb->page_offset ^= truesize;
b5996f11 452
b5996f11 453 desc_cb->reuse_flag = 1;
454 /* bump ref count on page before it is given*/
455 get_page(desc_cb->priv);
456 }
be78a690
AB		 457 return;
458 }
459
460 /* move offset up to the next cache line */
461 desc_cb->page_offset += truesize;
462
463 if (desc_cb->page_offset <= last_offset) {
464 desc_cb->reuse_flag = 1;
465 /* bump ref count on page before it is given*/
466 get_page(desc_cb->priv);
b5996f11 467 }
468}
469
13ac695e
S		 470static void get_v2rx_desc_bnum(u32 bnum_flag, int *out_bnum)
471{
472 *out_bnum = hnae_get_field(bnum_flag,
473 HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S) + 1;
474}
475
476static void get_rx_desc_bnum(u32 bnum_flag, int *out_bnum)
477{
478 *out_bnum = hnae_get_field(bnum_flag,
479 HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S);
480}
481
862b3d20
S		 482static void hns_nic_rx_checksum(struct hns_nic_ring_data *ring_data,
483 struct sk_buff *skb, u32 flag)
484{
485 struct net_device *netdev = ring_data->napi.dev;
486 u32 l3id;
487 u32 l4id;
488
489 /* check if RX checksum offload is enabled */
490 if (unlikely(!(netdev->features & NETIF_F_RXCSUM)))
491 return;
492
493 /* In hardware, we only support checksum for the following protocols:
494 * 1) IPv4,
495 * 2) TCP(over IPv4 or IPv6),
496 * 3) UDP(over IPv4 or IPv6),
497 * 4) SCTP(over IPv4 or IPv6)
498 * but we support many L3(IPv4, IPv6, MPLS, PPPoE etc) and L4(TCP,
499 * UDP, GRE, SCTP, IGMP, ICMP etc.) protocols.
500 *
501 * Hardware limitation:
502 * Our present hardware RX Descriptor lacks L3/L4 checksum "Status &
503 * Error" bit (which usually can be used to indicate whether checksum
504 * was calculated by the hardware and if there was any error encountered
505 * during checksum calculation).
506 *
507 * Software workaround:
508 * We do get info within the RX descriptor about the kind of L3/L4
509 * protocol coming in the packet and the error status. These errors
510 * might not just be checksum errors but could be related to version,
511 * length of IPv4, UDP, TCP etc.
512 * Because there is no-way of knowing if it is a L3/L4 error due to bad
513 * checksum or any other L3/L4 error, we will not (cannot) convey
514 * checksum status for such cases to upper stack and will not maintain
515 * the RX L3/L4 checksum counters as well.
516 */
517
518 l3id = hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S);
519 l4id = hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S);
520
521 /* check L3 protocol for which checksum is supported */
522 if ((l3id != HNS_RX_FLAG_L3ID_IPV4) && (l3id != HNS_RX_FLAG_L3ID_IPV6))
523 return;
524
525 /* check for any(not just checksum)flagged L3 protocol errors */
526 if (unlikely(hnae_get_bit(flag, HNS_RXD_L3E_B)))
527 return;
528
529 /* we do not support checksum of fragmented packets */
530 if (unlikely(hnae_get_bit(flag, HNS_RXD_FRAG_B)))
531 return;
532
533 /* check L4 protocol for which checksum is supported */
534 if ((l4id != HNS_RX_FLAG_L4ID_TCP) &&
535 (l4id != HNS_RX_FLAG_L4ID_UDP) &&
536 (l4id != HNS_RX_FLAG_L4ID_SCTP))
537 return;
538
539 /* check for any(not just checksum)flagged L4 protocol errors */
540 if (unlikely(hnae_get_bit(flag, HNS_RXD_L4E_B)))
541 return;
542
543 /* now, this has to be a packet with valid RX checksum */
544 skb->ip_summed = CHECKSUM_UNNECESSARY;
545}
546
b5996f11 547static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data,
548 struct sk_buff **out_skb, int *out_bnum)
549{
550 struct hnae_ring *ring = ring_data->ring;
551 struct net_device *ndev = ring_data->napi.dev;
13ac695e 552 struct hns_nic_priv *priv = netdev_priv(ndev);
b5996f11 553 struct sk_buff *skb;
554 struct hnae_desc *desc;
555 struct hnae_desc_cb *desc_cb;
556 unsigned char *va;
9cbe9fd5 557 int bnum, length, i;
b5996f11 558 int pull_len;
559 u32 bnum_flag;
560
b5996f11 561 desc = &ring->desc[ring->next_to_clean];
562 desc_cb = &ring->desc_cb[ring->next_to_clean];
13ac695e
S		 563
564 prefetch(desc);
565
b5996f11 566 va = (unsigned char *)desc_cb->buf + desc_cb->page_offset;
567
13ac695e
S		 568 /* prefetch first cache line of first page */
569 prefetch(va);
570#if L1_CACHE_BYTES < 128
571 prefetch(va + L1_CACHE_BYTES);
572#endif
573
574 skb = *out_skb = napi_alloc_skb(&ring_data->napi,
575 HNS_RX_HEAD_SIZE);
b5996f11 576 if (unlikely(!skb)) {
577 netdev_err(ndev, "alloc rx skb fail\n");
578 ring->stats.sw_err_cnt++;
579 return -ENOMEM;
580 }
581
9cbe9fd5 582 prefetchw(skb->data);
13ac695e
S		 583 length = le16_to_cpu(desc->rx.pkt_len);
584 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
585 priv->ops.get_rxd_bnum(bnum_flag, &bnum);
586 *out_bnum = bnum;
587
b5996f11 588 if (length <= HNS_RX_HEAD_SIZE) {
589 memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
590
591 /* we can reuse buffer as-is, just make sure it is local */
592 if (likely(page_to_nid(desc_cb->priv) == numa_node_id()))
593 desc_cb->reuse_flag = 1;
594 else /* this page cannot be reused so discard it */
595 put_page(desc_cb->priv);
596
597 ring_ptr_move_fw(ring, next_to_clean);
598
599 if (unlikely(bnum != 1)) { /* check err*/
600 *out_bnum = 1;
601 goto out_bnum_err;
602 }
603 } else {
604 ring->stats.seg_pkt_cnt++;
605
339379a2 606 pull_len = eth_get_headlen(va, HNS_RX_HEAD_SIZE);
b5996f11 607 memcpy(__skb_put(skb, pull_len), va,
608 ALIGN(pull_len, sizeof(long)));
609
9cbe9fd5 610 hns_nic_reuse_page(skb, 0, ring, pull_len, desc_cb);
b5996f11 611 ring_ptr_move_fw(ring, next_to_clean);
612
613 if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/
614 *out_bnum = 1;
615 goto out_bnum_err;
616 }
617 for (i = 1; i < bnum; i++) {
618 desc = &ring->desc[ring->next_to_clean];
619 desc_cb = &ring->desc_cb[ring->next_to_clean];
b5996f11 620
9cbe9fd5 621 hns_nic_reuse_page(skb, i, ring, 0, desc_cb);
b5996f11 622 ring_ptr_move_fw(ring, next_to_clean);
623 }
624 }
625
626 /* check except process, free skb and jump the desc */
627 if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) {
628out_bnum_err:
629 *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/
630 netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n",
631 bnum, ring->max_desc_num_per_pkt,
632 length, (int)MAX_SKB_FRAGS,
633 ((u64 *)desc)[0], ((u64 *)desc)[1]);
634 ring->stats.err_bd_num++;
635 dev_kfree_skb_any(skb);
636 return -EDOM;
637 }
638
639 bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
640
641 if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) {
642 netdev_err(ndev, "no valid bd,%016llx,%016llx\n",
643 ((u64 *)desc)[0], ((u64 *)desc)[1]);
644 ring->stats.non_vld_descs++;
645 dev_kfree_skb_any(skb);
646 return -EINVAL;
647 }
648
649 if (unlikely((!desc->rx.pkt_len) ||
650 hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) {
b5996f11 651 ring->stats.err_pkt_len++;
652 dev_kfree_skb_any(skb);
653 return -EFAULT;
654 }
655
656 if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) {
b5996f11 657 ring->stats.l2_err++;
658 dev_kfree_skb_any(skb);
659 return -EFAULT;
660 }
661
662 ring->stats.rx_pkts++;
663 ring->stats.rx_bytes += skb->len;
664
862b3d20
S		 665 /* indicate to upper stack if our hardware has already calculated
666 * the RX checksum
667 */
668 hns_nic_rx_checksum(ring_data, skb, bnum_flag);
b5996f11 669
670 return 0;
671}
672
673static void
674hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count)
675{
676 int i, ret;
677 struct hnae_desc_cb res_cbs;
678 struct hnae_desc_cb *desc_cb;
679 struct hnae_ring *ring = ring_data->ring;
680 struct net_device *ndev = ring_data->napi.dev;
681
682 for (i = 0; i < cleand_count; i++) {
683 desc_cb = &ring->desc_cb[ring->next_to_use];
684 if (desc_cb->reuse_flag) {
685 ring->stats.reuse_pg_cnt++;
686 hnae_reuse_buffer(ring, ring->next_to_use);
687 } else {
688 ret = hnae_reserve_buffer_map(ring, &res_cbs);
689 if (ret) {
690 ring->stats.sw_err_cnt++;
691 netdev_err(ndev, "hnae reserve buffer map failed.\n");
692 break;
693 }
694 hnae_replace_buffer(ring, ring->next_to_use, &res_cbs);
695 }
696
697 ring_ptr_move_fw(ring, next_to_use);
698 }
699
700 wmb(); /* make all data has been write before submit */
701 writel_relaxed(i, ring->io_base + RCB_REG_HEAD);
702}
703
704/* return error number for error or number of desc left to take
705 */
706static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data,
707 struct sk_buff *skb)
708{
709 struct net_device *ndev = ring_data->napi.dev;
710
711 skb->protocol = eth_type_trans(skb, ndev);
712 (void)napi_gro_receive(&ring_data->napi, skb);
b5996f11 713}
714
0e97cd4e 715static int hns_desc_unused(struct hnae_ring *ring)
716{
717 int ntc = ring->next_to_clean;
718 int ntu = ring->next_to_use;
719
720 return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu;
721}
722
b8c17f70
LYS		 723#define HNS_LOWEST_LATENCY_RATE 27 /* 27 MB/s */
724#define HNS_LOW_LATENCY_RATE 80 /* 80 MB/s */
725
726#define HNS_COAL_BDNUM 3
727
728static u32 hns_coal_rx_bdnum(struct hnae_ring *ring)
729{
730 bool coal_enable = ring->q->handle->coal_adapt_en;
731
732 if (coal_enable &&
733 ring->coal_last_rx_bytes > HNS_LOWEST_LATENCY_RATE)
734 return HNS_COAL_BDNUM;
735 else
736 return 0;
737}
738
739static void hns_update_rx_rate(struct hnae_ring *ring)
740{
741 bool coal_enable = ring->q->handle->coal_adapt_en;
742 u32 time_passed_ms;
743 u64 total_bytes;
744
745 if (!coal_enable ||
746 time_before(jiffies, ring->coal_last_jiffies + (HZ >> 4)))
747 return;
748
749 /* ring->stats.rx_bytes overflowed */
750 if (ring->coal_last_rx_bytes > ring->stats.rx_bytes) {
751 ring->coal_last_rx_bytes = ring->stats.rx_bytes;
752 ring->coal_last_jiffies = jiffies;
753 return;
754 }
755
756 total_bytes = ring->stats.rx_bytes - ring->coal_last_rx_bytes;
757 time_passed_ms = jiffies_to_msecs(jiffies - ring->coal_last_jiffies);
967b2e2a
LYS		 758 do_div(total_bytes, time_passed_ms);
759 ring->coal_rx_rate = total_bytes >> 10;
b8c17f70
LYS		 760
761 ring->coal_last_rx_bytes = ring->stats.rx_bytes;
762 ring->coal_last_jiffies = jiffies;
763}
764
765/**
766 * smooth_alg - smoothing algrithm for adjusting coalesce parameter
767 **/
768static u32 smooth_alg(u32 new_param, u32 old_param)
769{
770 u32 gap = (new_param > old_param) ? new_param - old_param
771 : old_param - new_param;
772
773 if (gap > 8)
774 gap >>= 3;
775
776 if (new_param > old_param)
777 return old_param + gap;
778 else
779 return old_param - gap;
780}
781
782/**
783 * hns_nic_adp_coalesce - self adapte coalesce according to rx rate
784 * @ring_data: pointer to hns_nic_ring_data
785 **/
786static void hns_nic_adpt_coalesce(struct hns_nic_ring_data *ring_data)
787{
788 struct hnae_ring *ring = ring_data->ring;
789 struct hnae_handle *handle = ring->q->handle;
790 u32 new_coal_param, old_coal_param = ring->coal_param;
791
792 if (ring->coal_rx_rate < HNS_LOWEST_LATENCY_RATE)
793 new_coal_param = HNAE_LOWEST_LATENCY_COAL_PARAM;
794 else if (ring->coal_rx_rate < HNS_LOW_LATENCY_RATE)
795 new_coal_param = HNAE_LOW_LATENCY_COAL_PARAM;
796 else
797 new_coal_param = HNAE_BULK_LATENCY_COAL_PARAM;
798
799 if (new_coal_param == old_coal_param &&
800 new_coal_param == handle->coal_param)
801 return;
802
803 new_coal_param = smooth_alg(new_coal_param, old_coal_param);
804 ring->coal_param = new_coal_param;
805
806 /**
807 * Because all ring in one port has one coalesce param, when one ring
808 * calculate its own coalesce param, it cannot write to hardware at
809 * once. There are three conditions as follows:
810 * 1. current ring's coalesce param is larger than the hardware.
811 * 2. or ring which adapt last time can change again.
812 * 3. timeout.
813 */
814 if (new_coal_param == handle->coal_param) {
815 handle->coal_last_jiffies = jiffies;
816 handle->coal_ring_idx = ring_data->queue_index;
817 } else if (new_coal_param > handle->coal_param ||
818 handle->coal_ring_idx == ring_data->queue_index ||
819 time_after(jiffies, handle->coal_last_jiffies + (HZ >> 4))) {
820 handle->dev->ops->set_coalesce_usecs(handle,
821 new_coal_param);
822 handle->dev->ops->set_coalesce_frames(handle,
823 1, new_coal_param);
824 handle->coal_param = new_coal_param;
825 handle->coal_ring_idx = ring_data->queue_index;
826 handle->coal_last_jiffies = jiffies;
827 }
828}
829
b5996f11 830static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data,
831 int budget, void *v)
832{
833 struct hnae_ring *ring = ring_data->ring;
834 struct sk_buff *skb;
34447271 835 int num, bnum;
b5996f11 836#define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
837 int recv_pkts, recv_bds, clean_count, err;
0e97cd4e 838 int unused_count = hns_desc_unused(ring);
b5996f11 839
840 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
841 rmb(); /* make sure num taken effect before the other data is touched */
842
843 recv_pkts = 0, recv_bds = 0, clean_count = 0;
0e97cd4e 844 num -= unused_count;
34447271 845
b5996f11 846 while (recv_pkts < budget && recv_bds < num) {
6ba312eb 847 /* reuse or realloc buffers */
0e97cd4e 848 if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
849 hns_nic_alloc_rx_buffers(ring_data,
850 clean_count + unused_count);
b5996f11 851 clean_count = 0;
0e97cd4e 852 unused_count = hns_desc_unused(ring);
b5996f11 853 }
854
6ba312eb 855 /* poll one pkt */
b5996f11 856 err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum);
857 if (unlikely(!skb)) /* this fault cannot be repaired */
3a31b64e 858 goto out;
b5996f11 859
860 recv_bds += bnum;
861 clean_count += bnum;
862 if (unlikely(err)) { /* do jump the err */
863 recv_pkts++;
864 continue;
865 }
866
867 /* do update ip stack process*/
868 ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)(
869 ring_data, skb);
870 recv_pkts++;
871 }
872
3a31b64e 873out:
13ac695e 874 /* make all data has been write before submit */
0e97cd4e 875 if (clean_count + unused_count > 0)
876 hns_nic_alloc_rx_buffers(ring_data,
877 clean_count + unused_count);
13ac695e 878
b5996f11 879 return recv_pkts;
880}
881
36eedfde 882static bool hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
b5996f11 883{
884 struct hnae_ring *ring = ring_data->ring;
885 int num = 0;
b8c17f70 886 bool rx_stopped;
b5996f11 887
b8c17f70 888 hns_update_rx_rate(ring);
cee5add4 889
b5996f11 890 /* for hardware bug fixed */
b8c17f70 891 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
b5996f11 892 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
893
b8c17f70
LYS		 894 if (num <= hns_coal_rx_bdnum(ring)) {
895 if (ring->q->handle->coal_adapt_en)
896 hns_nic_adpt_coalesce(ring_data);
897
898 rx_stopped = true;
899 } else {
b5996f11 900 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
901 ring_data->ring, 1);
902
b8c17f70 903 rx_stopped = false;
b5996f11 904 }
b8c17f70
LYS		 905
906 return rx_stopped;
b5996f11 907}
908
36eedfde 909static bool hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
cee5add4
DH		 910{
911 struct hnae_ring *ring = ring_data->ring;
36eedfde 912 int num;
cee5add4 913
b8c17f70 914 hns_update_rx_rate(ring);
cee5add4
DH		 915 num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
916
b8c17f70
LYS		 917 if (num <= hns_coal_rx_bdnum(ring)) {
918 if (ring->q->handle->coal_adapt_en)
919 hns_nic_adpt_coalesce(ring_data);
920
36eedfde 921 return true;
b8c17f70
LYS		 922 }
923
924 return false;
cee5add4
DH		 925}
926
b5996f11 927static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring,
928 int *bytes, int *pkts)
929{
930 struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
931
932 (*pkts) += (desc_cb->type == DESC_TYPE_SKB);
933 (*bytes) += desc_cb->length;
934 /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
935 hnae_free_buffer_detach(ring, ring->next_to_clean);
936
937 ring_ptr_move_fw(ring, next_to_clean);
938}
939
940static int is_valid_clean_head(struct hnae_ring *ring, int h)
941{
942 int u = ring->next_to_use;
943 int c = ring->next_to_clean;
944
945 if (unlikely(h > ring->desc_num))
946 return 0;
947
948 assert(u > 0 && u < ring->desc_num);
949 assert(c > 0 && c < ring->desc_num);
950 assert(u != c && h != c); /* must be checked before call this func */
951
952 return u > c ? (h > c && h <= u) : (h > c || h <= u);
953}
954
955/* netif_tx_lock will turn down the performance, set only when necessary */
956#ifdef CONFIG_NET_POLL_CONTROLLER
b4957ab0
S		 957#define NETIF_TX_LOCK(ring) spin_lock(&(ring)->lock)
958#define NETIF_TX_UNLOCK(ring) spin_unlock(&(ring)->lock)
b5996f11 959#else
f2aaed55 960#define NETIF_TX_LOCK(ring)
961#define NETIF_TX_UNLOCK(ring)
b5996f11 962#endif
f2aaed55 963
b5996f11 964/* reclaim all desc in one budget
965 * return error or number of desc left
966 */
967static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
968 int budget, void *v)
969{
970 struct hnae_ring *ring = ring_data->ring;
971 struct net_device *ndev = ring_data->napi.dev;
972 struct netdev_queue *dev_queue;
973 struct hns_nic_priv *priv = netdev_priv(ndev);
974 int head;
975 int bytes, pkts;
976
f2aaed55 977 NETIF_TX_LOCK(ring);
b5996f11 978
979 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
980 rmb(); /* make sure head is ready before touch any data */
981
982 if (is_ring_empty(ring) || head == ring->next_to_clean) {
f2aaed55 983 NETIF_TX_UNLOCK(ring);
b5996f11 984 return 0; /* no data to poll */
985 }
986
987 if (!is_valid_clean_head(ring, head)) {
988 netdev_err(ndev, "wrong head (%d, %d-%d)\n", head,
989 ring->next_to_use, ring->next_to_clean);
990 ring->stats.io_err_cnt++;
f2aaed55 991 NETIF_TX_UNLOCK(ring);
b5996f11 992 return -EIO;
993 }
994
995 bytes = 0;
996 pkts = 0;
9cbe9fd5 997 while (head != ring->next_to_clean) {
b5996f11 998 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
9cbe9fd5 999 /* issue prefetch for next Tx descriptor */
1000 prefetch(&ring->desc_cb[ring->next_to_clean]);
1001 }
b5996f11 1002
f2aaed55 1003 NETIF_TX_UNLOCK(ring);
b5996f11 1004
1005 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
1006 netdev_tx_completed_queue(dev_queue, pkts, bytes);
1007
13ac695e
S		 1008 if (unlikely(priv->link && !netif_carrier_ok(ndev)))
1009 netif_carrier_on(ndev);
1010
b5996f11 1011 if (unlikely(pkts && netif_carrier_ok(ndev) &&
1012 (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) {
1013 /* Make sure that anybody stopping the queue after this
1014 * sees the new next_to_clean.
1015 */
1016 smp_mb();
1017 if (netif_tx_queue_stopped(dev_queue) &&
1018 !test_bit(NIC_STATE_DOWN, &priv->state)) {
1019 netif_tx_wake_queue(dev_queue);
1020 ring->stats.restart_queue++;
1021 }
1022 }
1023 return 0;
1024}
1025
36eedfde 1026static bool hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
b5996f11 1027{
1028 struct hnae_ring *ring = ring_data->ring;
cee5add4
DH		 1029 int head;
1030
1031 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
1032
1033 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
b5996f11 1034
1035 if (head != ring->next_to_clean) {
1036 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
1037 ring_data->ring, 1);
1038
36eedfde 1039 return false;
1040 } else {
1041 return true;
b5996f11 1042 }
1043}
1044
36eedfde 1045static bool hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
cee5add4
DH		 1046{
1047 struct hnae_ring *ring = ring_data->ring;
1048 int head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
1049
1050 if (head == ring->next_to_clean)
36eedfde 1051 return true;
cee5add4 1052 else
36eedfde 1053 return false;
cee5add4
DH		 1054}
1055
b5996f11 1056static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
1057{
1058 struct hnae_ring *ring = ring_data->ring;
1059 struct net_device *ndev = ring_data->napi.dev;
1060 struct netdev_queue *dev_queue;
1061 int head;
1062 int bytes, pkts;
1063
f2aaed55 1064 NETIF_TX_LOCK(ring);
b5996f11 1065
1066 head = ring->next_to_use; /* ntu :soft setted ring position*/
1067 bytes = 0;
1068 pkts = 0;
1069 while (head != ring->next_to_clean)
1070 hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
1071
f2aaed55 1072 NETIF_TX_UNLOCK(ring);
b5996f11 1073
1074 dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
1075 netdev_tx_reset_queue(dev_queue);
1076}
1077
1078static int hns_nic_common_poll(struct napi_struct *napi, int budget)
1079{
36eedfde 1080 int clean_complete = 0;
b5996f11 1081 struct hns_nic_ring_data *ring_data =
1082 container_of(napi, struct hns_nic_ring_data, napi);
36eedfde 1083 struct hnae_ring *ring = ring_data->ring;
b5996f11 1084
36eedfde 1085try_again:
1086 clean_complete += ring_data->poll_one(
1087 ring_data, budget - clean_complete,
1088 ring_data->ex_process);
1089
1090 if (clean_complete < budget) {
1091 if (ring_data->fini_process(ring_data)) {
1092 napi_complete(napi);
1093 ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
1094 } else {
1095 goto try_again;
1096 }
b5996f11 1097 }
1098
1099 return clean_complete;
1100}
1101
1102static irqreturn_t hns_irq_handle(int irq, void *dev)
1103{
1104 struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev;
1105
1106 ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
1107 ring_data->ring, 1);
1108 napi_schedule(&ring_data->napi);
1109
1110 return IRQ_HANDLED;
1111}
1112
1113/**
1114 *hns_nic_adjust_link - adjust net work mode by the phy stat or new param
1115 *@ndev: net device
1116 */
1117static void hns_nic_adjust_link(struct net_device *ndev)
1118{
1119 struct hns_nic_priv *priv = netdev_priv(ndev);
1120 struct hnae_handle *h = priv->ae_handle;
bb7189dc
QX		 1121 int state = 1;
1122
31fabbee 1123 /* If there is no phy, do not need adjust link */
262b38cd 1124 if (ndev->phydev) {
31fabbee
PL		 1125 /* When phy link down, do nothing */
1126 if (ndev->phydev->link == 0)
1127 return;
1128
1129 if (h->dev->ops->need_adjust_link(h, ndev->phydev->speed,
1130 ndev->phydev->duplex)) {
1131 /* because Hi161X chip don't support to change gmac
1132 * speed and duplex with traffic. Delay 200ms to
1133 * make sure there is no more data in chip FIFO.
1134 */
1135 netif_carrier_off(ndev);
1136 msleep(200);
1137 h->dev->ops->adjust_link(h, ndev->phydev->speed,
1138 ndev->phydev->duplex);
1139 netif_carrier_on(ndev);
1140 }
bb7189dc 1141 }
31fabbee 1142
bb7189dc 1143 state = state && h->dev->ops->get_status(h);
b5996f11 1144
bb7189dc
QX		 1145 if (state != priv->link) {
1146 if (state) {
1147 netif_carrier_on(ndev);
1148 netif_tx_wake_all_queues(ndev);
1149 netdev_info(ndev, "link up\n");
1150 } else {
1151 netif_carrier_off(ndev);
1152 netdev_info(ndev, "link down\n");
1153 }
1154 priv->link = state;
1155 }
b5996f11 1156}
1157
1158/**
1159 *hns_nic_init_phy - init phy
1160 *@ndev: net device
1161 *@h: ae handle
1162 * Return 0 on success, negative on failure
1163 */
1164int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h)
1165{
652d39b0
KY		 1166 struct phy_device *phy_dev = h->phy_dev;
1167 int ret;
b5996f11 1168
652d39b0 1169 if (!h->phy_dev)
b5996f11 1170 return 0;
1171
652d39b0
KY		 1172 if (h->phy_if != PHY_INTERFACE_MODE_XGMII) {
1173 phy_dev->dev_flags = 0;
b5996f11 1174
652d39b0
KY		 1175 ret = phy_connect_direct(ndev, phy_dev, hns_nic_adjust_link,
1176 h->phy_if);
1177 } else {
1178 ret = phy_attach_direct(ndev, phy_dev, 0, h->phy_if);
1179 }
1180 if (unlikely(ret))
1181 return -ENODEV;
b5996f11 1182
1183 phy_dev->supported &= h->if_support;
1184 phy_dev->advertising = phy_dev->supported;
1185
1186 if (h->phy_if == PHY_INTERFACE_MODE_XGMII)
1187 phy_dev->autoneg = false;
1188
308c6caf
YL		 1189 if (h->phy_if == PHY_INTERFACE_MODE_SGMII)
1190 phy_stop(phy_dev);
1191
b5996f11 1192 return 0;
1193}
1194
1195static int hns_nic_ring_open(struct net_device *netdev, int idx)
1196{
1197 struct hns_nic_priv *priv = netdev_priv(netdev);
1198 struct hnae_handle *h = priv->ae_handle;
1199
1200 napi_enable(&priv->ring_data[idx].napi);
1201
1202 enable_irq(priv->ring_data[idx].ring->irq);
1203 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0);
1204
1205 return 0;
1206}
1207
1208static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p)
1209{
1210 struct hns_nic_priv *priv = netdev_priv(ndev);
1211 struct hnae_handle *h = priv->ae_handle;
1212 struct sockaddr *mac_addr = p;
1213 int ret;
1214
1215 if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
1216 return -EADDRNOTAVAIL;
1217
1218 ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data);
1219 if (ret) {
1220 netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret);
1221 return ret;
1222 }
1223
1224 memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len);
1225
1226 return 0;
1227}
1228
336a443b 1229static void hns_nic_update_stats(struct net_device *netdev)
b5996f11 1230{
1231 struct hns_nic_priv *priv = netdev_priv(netdev);
1232 struct hnae_handle *h = priv->ae_handle;
1233
1234 h->dev->ops->update_stats(h, &netdev->stats);
1235}
1236
1237/* set mac addr if it is configed. or leave it to the AE driver */
1238static void hns_init_mac_addr(struct net_device *ndev)
1239{
1240 struct hns_nic_priv *priv = netdev_priv(ndev);
b5996f11 1241
6162928c 1242 if (!device_get_mac_address(priv->dev, ndev->dev_addr, ETH_ALEN)) {
b5996f11 1243 eth_hw_addr_random(ndev);
1244 dev_warn(priv->dev, "No valid mac, use random mac %pM",
1245 ndev->dev_addr);
1246 }
1247}
1248
1249static void hns_nic_ring_close(struct net_device *netdev, int idx)
1250{
1251 struct hns_nic_priv *priv = netdev_priv(netdev);
1252 struct hnae_handle *h = priv->ae_handle;
1253
1254 h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1);
1255 disable_irq(priv->ring_data[idx].ring->irq);
1256
1257 napi_disable(&priv->ring_data[idx].napi);
1258}
1259
ba2d0791 1260static int hns_nic_init_affinity_mask(int q_num, int ring_idx,
1261 struct hnae_ring *ring, cpumask_t *mask)
b5996f11 1262{
b5996f11 1263 int cpu;
ff3edc9b 1264
ba2d0791 1265 /* Diffrent irq banlance between 16core and 32core.
1266 * The cpu mask set by ring index according to the ring flag
1267 * which indicate the ring is tx or rx.
1268 */
1269 if (q_num == num_possible_cpus()) {
1270 if (is_tx_ring(ring))
1271 cpu = ring_idx;
1272 else
1273 cpu = ring_idx - q_num;
13ac695e 1274 } else {
ba2d0791 1275 if (is_tx_ring(ring))
1276 cpu = ring_idx * 2;
1277 else
1278 cpu = (ring_idx - q_num) * 2 + 1;
13ac695e 1279 }
ff3edc9b 1280
ba2d0791 1281 cpumask_clear(mask);
1282 cpumask_set_cpu(cpu, mask);
1283
1284 return cpu;
13ac695e
S		 1285}
1286
c82bd077
YL		 1287static void hns_nic_free_irq(int q_num, struct hns_nic_priv *priv)
1288{
1289 int i;
1290
1291 for (i = 0; i < q_num * 2; i++) {
1292 if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) {
1293 irq_set_affinity_hint(priv->ring_data[i].ring->irq,
1294 NULL);
1295 free_irq(priv->ring_data[i].ring->irq,
1296 &priv->ring_data[i]);
1297 priv->ring_data[i].ring->irq_init_flag =
1298 RCB_IRQ_NOT_INITED;
1299 }
1300 }
1301}
1302
13ac695e
S		 1303static int hns_nic_init_irq(struct hns_nic_priv *priv)
1304{
1305 struct hnae_handle *h = priv->ae_handle;
1306 struct hns_nic_ring_data *rd;
1307 int i;
1308 int ret;
ba2d0791 1309 int cpu;
13ac695e 1310
b5996f11 1311 for (i = 0; i < h->q_num * 2; i++) {
1312 rd = &priv->ring_data[i];
1313
1314 if (rd->ring->irq_init_flag == RCB_IRQ_INITED)
1315 break;
1316
1317 snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN,
1318 "%s-%s%d", priv->netdev->name,
ba2d0791 1319 (is_tx_ring(rd->ring) ? "tx" : "rx"), rd->queue_index);
b5996f11 1320
1321 rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0';
1322
1323 ret = request_irq(rd->ring->irq,
1324 hns_irq_handle, 0, rd->ring->ring_name, rd);
1325 if (ret) {
1326 netdev_err(priv->netdev, "request irq(%d) fail\n",
1327 rd->ring->irq);
c82bd077 1328 goto out_free_irq;
b5996f11 1329 }
1330 disable_irq(rd->ring->irq);
ba2d0791 1331
1332 cpu = hns_nic_init_affinity_mask(h->q_num, i,
1333 rd->ring, &rd->mask);
1334
1335 if (cpu_online(cpu))
1336 irq_set_affinity_hint(rd->ring->irq,
1337 &rd->mask);
1338
b5996f11 1339 rd->ring->irq_init_flag = RCB_IRQ_INITED;
b5996f11 1340 }
1341
1342 return 0;
c82bd077
YL		 1343
1344out_free_irq:
1345 hns_nic_free_irq(h->q_num, priv);
1346 return ret;
b5996f11 1347}
1348
1349static int hns_nic_net_up(struct net_device *ndev)
1350{
1351 struct hns_nic_priv *priv = netdev_priv(ndev);
1352 struct hnae_handle *h = priv->ae_handle;
454784d8 1353 int i, j;
b5996f11 1354 int ret;
1355
5778b13b
YL		 1356 if (!test_bit(NIC_STATE_DOWN, &priv->state))
1357 return 0;
1358
b5996f11 1359 ret = hns_nic_init_irq(priv);
1360 if (ret != 0) {
1361 netdev_err(ndev, "hns init irq failed! ret=%d\n", ret);
1362 return ret;
1363 }
1364
1365 for (i = 0; i < h->q_num * 2; i++) {
1366 ret = hns_nic_ring_open(ndev, i);
1367 if (ret)
1368 goto out_has_some_queues;
1369 }
1370
b5996f11 1371 ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr);
1372 if (ret)
1373 goto out_set_mac_addr_err;
1374
1375 ret = h->dev->ops->start ? h->dev->ops->start(h) : 0;
1376 if (ret)
1377 goto out_start_err;
1378
262b38cd
PR		 1379 if (ndev->phydev)
1380 phy_start(ndev->phydev);
b5996f11 1381
1382 clear_bit(NIC_STATE_DOWN, &priv->state);
1383 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
1384
1385 return 0;
1386
1387out_start_err:
1388 netif_stop_queue(ndev);
1389out_set_mac_addr_err:
b5996f11 1390out_has_some_queues:
1391 for (j = i - 1; j >= 0; j--)
1392 hns_nic_ring_close(ndev, j);
1393
c82bd077 1394 hns_nic_free_irq(h->q_num, priv);
b5996f11 1395 set_bit(NIC_STATE_DOWN, &priv->state);
1396
1397 return ret;
1398}
1399
1400static void hns_nic_net_down(struct net_device *ndev)
1401{
1402 int i;
1403 struct hnae_ae_ops *ops;
1404 struct hns_nic_priv *priv = netdev_priv(ndev);
1405
1406 if (test_and_set_bit(NIC_STATE_DOWN, &priv->state))
1407 return;
1408
1409 (void)del_timer_sync(&priv->service_timer);
1410 netif_tx_stop_all_queues(ndev);
1411 netif_carrier_off(ndev);
1412 netif_tx_disable(ndev);
1413 priv->link = 0;
1414
262b38cd
PR		 1415 if (ndev->phydev)
1416 phy_stop(ndev->phydev);
b5996f11 1417
1418 ops = priv->ae_handle->dev->ops;
1419
1420 if (ops->stop)
1421 ops->stop(priv->ae_handle);
1422
1423 netif_tx_stop_all_queues(ndev);
1424
1425 for (i = priv->ae_handle->q_num - 1; i >= 0; i--) {
1426 hns_nic_ring_close(ndev, i);
1427 hns_nic_ring_close(ndev, i + priv->ae_handle->q_num);
1428
1429 /* clean tx buffers*/
1430 hns_nic_tx_clr_all_bufs(priv->ring_data + i);
1431 }
1432}
1433
1434void hns_nic_net_reset(struct net_device *ndev)
1435{
1436 struct hns_nic_priv *priv = netdev_priv(ndev);
1437 struct hnae_handle *handle = priv->ae_handle;
1438
1439 while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state))
1440 usleep_range(1000, 2000);
1441
1442 (void)hnae_reinit_handle(handle);
1443
1444 clear_bit(NIC_STATE_RESETTING, &priv->state);
1445}
1446
1447void hns_nic_net_reinit(struct net_device *netdev)
1448{
1449 struct hns_nic_priv *priv = netdev_priv(netdev);
76b825ab 1450 enum hnae_port_type type = priv->ae_handle->port_type;
b5996f11 1451
860e9538 1452 netif_trans_update(priv->netdev);
b5996f11 1453 while (test_and_set_bit(NIC_STATE_REINITING, &priv->state))
1454 usleep_range(1000, 2000);
1455
1456 hns_nic_net_down(netdev);
76b825ab
LYS		 1457
1458 /* Only do hns_nic_net_reset in debug mode
1459 * because of hardware limitation.
1460 */
1461 if (type == HNAE_PORT_DEBUG)
1462 hns_nic_net_reset(netdev);
1463
b5996f11 1464 (void)hns_nic_net_up(netdev);
1465 clear_bit(NIC_STATE_REINITING, &priv->state);
1466}
1467
1468static int hns_nic_net_open(struct net_device *ndev)
1469{
1470 struct hns_nic_priv *priv = netdev_priv(ndev);
1471 struct hnae_handle *h = priv->ae_handle;
1472 int ret;
1473
1474 if (test_bit(NIC_STATE_TESTING, &priv->state))
1475 return -EBUSY;
1476
1477 priv->link = 0;
1478 netif_carrier_off(ndev);
1479
1480 ret = netif_set_real_num_tx_queues(ndev, h->q_num);
1481 if (ret < 0) {
1482 netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n",
1483 ret);
1484 return ret;
1485 }
1486
1487 ret = netif_set_real_num_rx_queues(ndev, h->q_num);
1488 if (ret < 0) {
1489 netdev_err(ndev,
1490 "netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
1491 return ret;
1492 }
1493
1494 ret = hns_nic_net_up(ndev);
1495 if (ret) {
1496 netdev_err(ndev,
1497 "hns net up fail, ret=%d!\n", ret);
1498 return ret;
1499 }
1500
1501 return 0;
1502}
1503
1504static int hns_nic_net_stop(struct net_device *ndev)
1505{
1506 hns_nic_net_down(ndev);
1507
1508 return 0;
1509}
1510
1511static void hns_tx_timeout_reset(struct hns_nic_priv *priv);
a57275d3 1512#define HNS_TX_TIMEO_LIMIT (40 * HZ)
b5996f11 1513static void hns_nic_net_timeout(struct net_device *ndev)
1514{
1515 struct hns_nic_priv *priv = netdev_priv(ndev);
1516
a57275d3
YL		 1517 if (ndev->watchdog_timeo < HNS_TX_TIMEO_LIMIT) {
1518 ndev->watchdog_timeo *= 2;
1519 netdev_info(ndev, "watchdog_timo changed to %d.\n",
1520 ndev->watchdog_timeo);
1521 } else {
1522 ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT;
1523 hns_tx_timeout_reset(priv);
1524 }
b5996f11 1525}
1526
1527static int hns_nic_do_ioctl(struct net_device *netdev, struct ifreq *ifr,
1528 int cmd)
1529{
262b38cd 1530 struct phy_device *phy_dev = netdev->phydev;
b5996f11 1531
1532 if (!netif_running(netdev))
1533 return -EINVAL;
1534
1535 if (!phy_dev)
1536 return -ENOTSUPP;
1537
1538 return phy_mii_ioctl(phy_dev, ifr, cmd);
1539}
1540
b5996f11 1541static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb,
1542 struct net_device *ndev)
1543{
1544 struct hns_nic_priv *priv = netdev_priv(ndev);
b5996f11 1545
1546 assert(skb->queue_mapping < ndev->ae_handle->q_num);
27463ad9
YL		 1547
1548 return hns_nic_net_xmit_hw(ndev, skb,
1549 &tx_ring_data(priv, skb->queue_mapping));
b5996f11 1550}
1551
b29bd412 1552static void hns_nic_drop_rx_fetch(struct hns_nic_ring_data *ring_data,
1553 struct sk_buff *skb)
1554{
1555 dev_kfree_skb_any(skb);
1556}
1557
1558#define HNS_LB_TX_RING 0
1559static struct sk_buff *hns_assemble_skb(struct net_device *ndev)
1560{
1561 struct sk_buff *skb;
1562 struct ethhdr *ethhdr;
1563 int frame_len;
1564
1565 /* allocate test skb */
1566 skb = alloc_skb(64, GFP_KERNEL);
1567 if (!skb)
1568 return NULL;
1569
1570 skb_put(skb, 64);
1571 skb->dev = ndev;
1572 memset(skb->data, 0xFF, skb->len);
1573
1574 /* must be tcp/ip package */
1575 ethhdr = (struct ethhdr *)skb->data;
1576 ethhdr->h_proto = htons(ETH_P_IP);
1577
1578 frame_len = skb->len & (~1ul);
1579 memset(&skb->data[frame_len / 2], 0xAA,
1580 frame_len / 2 - 1);
1581
1582 skb->queue_mapping = HNS_LB_TX_RING;
1583
1584 return skb;
1585}
1586
1587static int hns_enable_serdes_lb(struct net_device *ndev)
1588{
1589 struct hns_nic_priv *priv = netdev_priv(ndev);
1590 struct hnae_handle *h = priv->ae_handle;
1591 struct hnae_ae_ops *ops = h->dev->ops;
1592 int speed, duplex;
1593 int ret;
1594
1595 ret = ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 1);
1596 if (ret)
1597 return ret;
1598
1599 ret = ops->start ? ops->start(h) : 0;
1600 if (ret)
1601 return ret;
1602
1603 /* link adjust duplex*/
1604 if (h->phy_if != PHY_INTERFACE_MODE_XGMII)
1605 speed = 1000;
1606 else
1607 speed = 10000;
1608 duplex = 1;
1609
1610 ops->adjust_link(h, speed, duplex);
1611
1612 /* wait h/w ready */
1613 mdelay(300);
1614
1615 return 0;
1616}
1617
1618static void hns_disable_serdes_lb(struct net_device *ndev)
1619{
1620 struct hns_nic_priv *priv = netdev_priv(ndev);
1621 struct hnae_handle *h = priv->ae_handle;
1622 struct hnae_ae_ops *ops = h->dev->ops;
1623
1624 ops->stop(h);
1625 ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 0);
1626}
1627
1628/**
1629 *hns_nic_clear_all_rx_fetch - clear the chip fetched descriptions. The
1630 *function as follows:
1631 * 1. if one rx ring has found the page_offset is not equal 0 between head
1632 * and tail, it means that the chip fetched the wrong descs for the ring
1633 * which buffer size is 4096.
1634 * 2. we set the chip serdes loopback and set rss indirection to the ring.
1635 * 3. construct 64-bytes ip broadcast packages, wait the associated rx ring
1636 * recieving all packages and it will fetch new descriptions.
1637 * 4. recover to the original state.
1638 *
1639 *@ndev: net device
1640 */
1641static int hns_nic_clear_all_rx_fetch(struct net_device *ndev)
1642{
1643 struct hns_nic_priv *priv = netdev_priv(ndev);
1644 struct hnae_handle *h = priv->ae_handle;
1645 struct hnae_ae_ops *ops = h->dev->ops;
1646 struct hns_nic_ring_data *rd;
1647 struct hnae_ring *ring;
1648 struct sk_buff *skb;
1649 u32 *org_indir;
1650 u32 *cur_indir;
1651 int indir_size;
1652 int head, tail;
1653 int fetch_num;
1654 int i, j;
1655 bool found;
1656 int retry_times;
1657 int ret = 0;
1658
1659 /* alloc indir memory */
1660 indir_size = ops->get_rss_indir_size(h) * sizeof(*org_indir);
1661 org_indir = kzalloc(indir_size, GFP_KERNEL);
1662 if (!org_indir)
1663 return -ENOMEM;
1664
1665 /* store the orginal indirection */
1666 ops->get_rss(h, org_indir, NULL, NULL);
1667
1668 cur_indir = kzalloc(indir_size, GFP_KERNEL);
1669 if (!cur_indir) {
1670 ret = -ENOMEM;
1671 goto cur_indir_alloc_err;
1672 }
1673
1674 /* set loopback */
1675 if (hns_enable_serdes_lb(ndev)) {
1676 ret = -EINVAL;
1677 goto enable_serdes_lb_err;
1678 }
1679
1680 /* foreach every rx ring to clear fetch desc */
1681 for (i = 0; i < h->q_num; i++) {
1682 ring = &h->qs[i]->rx_ring;
1683 head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
1684 tail = readl_relaxed(ring->io_base + RCB_REG_TAIL);
1685 found = false;
1686 fetch_num = ring_dist(ring, head, tail);
1687
1688 while (head != tail) {
1689 if (ring->desc_cb[head].page_offset != 0) {
1690 found = true;
1691 break;
1692 }
1693
1694 head++;
1695 if (head == ring->desc_num)
1696 head = 0;
1697 }
1698
1699 if (found) {
1700 for (j = 0; j < indir_size / sizeof(*org_indir); j++)
1701 cur_indir[j] = i;
1702 ops->set_rss(h, cur_indir, NULL, 0);
1703
1704 for (j = 0; j < fetch_num; j++) {
1705 /* alloc one skb and init */
1706 skb = hns_assemble_skb(ndev);
1707 if (!skb)
1708 goto out;
1709 rd = &tx_ring_data(priv, skb->queue_mapping);
1710 hns_nic_net_xmit_hw(ndev, skb, rd);
1711
1712 retry_times = 0;
1713 while (retry_times++ < 10) {
1714 mdelay(10);
1715 /* clean rx */
1716 rd = &rx_ring_data(priv, i);
1717 if (rd->poll_one(rd, fetch_num,
1718 hns_nic_drop_rx_fetch))
1719 break;
1720 }
1721
1722 retry_times = 0;
1723 while (retry_times++ < 10) {
1724 mdelay(10);
1725 /* clean tx ring 0 send package */
1726 rd = &tx_ring_data(priv,
1727 HNS_LB_TX_RING);
1728 if (rd->poll_one(rd, fetch_num, NULL))
1729 break;
1730 }
1731 }
1732 }
1733 }
1734
1735out:
1736 /* restore everything */
1737 ops->set_rss(h, org_indir, NULL, 0);
1738 hns_disable_serdes_lb(ndev);
1739enable_serdes_lb_err:
1740 kfree(cur_indir);
1741cur_indir_alloc_err:
1742 kfree(org_indir);
1743
1744 return ret;
1745}
1746
b5996f11 1747static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu)
1748{
1749 struct hns_nic_priv *priv = netdev_priv(ndev);
1750 struct hnae_handle *h = priv->ae_handle;
b29bd412 1751 bool if_running = netif_running(ndev);
b5996f11 1752 int ret;
1753
b29bd412 1754 /* MTU < 68 is an error and causes problems on some kernels */
1755 if (new_mtu < 68)
1756 return -EINVAL;
1757
1758 /* MTU no change */
1759 if (new_mtu == ndev->mtu)
1760 return 0;
1761
b5996f11 1762 if (!h->dev->ops->set_mtu)
1763 return -ENOTSUPP;
1764
b29bd412 1765 if (if_running) {
b5996f11 1766 (void)hns_nic_net_stop(ndev);
1767 msleep(100);
b29bd412 1768 }
b5996f11 1769
b29bd412 1770 if (priv->enet_ver != AE_VERSION_1 &&
1771 ndev->mtu <= BD_SIZE_2048_MAX_MTU &&
1772 new_mtu > BD_SIZE_2048_MAX_MTU) {
1773 /* update desc */
1774 hnae_reinit_all_ring_desc(h);
b5996f11 1775
b29bd412 1776 /* clear the package which the chip has fetched */
1777 ret = hns_nic_clear_all_rx_fetch(ndev);
1778
1779 /* the page offset must be consist with desc */
1780 hnae_reinit_all_ring_page_off(h);
1781
1782 if (ret) {
1783 netdev_err(ndev, "clear the fetched desc fail\n");
1784 goto out;
1785 }
1786 }
1787
1788 ret = h->dev->ops->set_mtu(h, new_mtu);
1789 if (ret) {
1790 netdev_err(ndev, "set mtu fail, return value %d\n",
1791 ret);
1792 goto out;
b5996f11 1793 }
1794
b29bd412 1795 /* finally, set new mtu to netdevice */
1796 ndev->mtu = new_mtu;
1797
1798out:
1799 if (if_running) {
1800 if (hns_nic_net_open(ndev)) {
1801 netdev_err(ndev, "hns net open fail\n");
1802 ret = -EINVAL;
1803 }
1804 }
b5996f11 1805
1806 return ret;
1807}
1808
38f616da
S		 1809static int hns_nic_set_features(struct net_device *netdev,
1810 netdev_features_t features)
1811{
1812 struct hns_nic_priv *priv = netdev_priv(netdev);
38f616da
S		 1813
1814 switch (priv->enet_ver) {
1815 case AE_VERSION_1:
1816 if (features & (NETIF_F_TSO | NETIF_F_TSO6))
1817 netdev_info(netdev, "enet v1 do not support tso!\n");
1818 break;
1819 default:
1820 if (features & (NETIF_F_TSO | NETIF_F_TSO6)) {
1821 priv->ops.fill_desc = fill_tso_desc;
1822 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
1823 /* The chip only support 7*4096 */
1824 netif_set_gso_max_size(netdev, 7 * 4096);
38f616da
S		 1825 } else {
1826 priv->ops.fill_desc = fill_v2_desc;
1827 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
38f616da
S		 1828 }
1829 break;
1830 }
1831 netdev->features = features;
1832 return 0;
1833}
1834
1835static netdev_features_t hns_nic_fix_features(
1836 struct net_device *netdev, netdev_features_t features)
1837{
1838 struct hns_nic_priv *priv = netdev_priv(netdev);
1839
1840 switch (priv->enet_ver) {
1841 case AE_VERSION_1:
1842 features &= ~(NETIF_F_TSO | NETIF_F_TSO6 |
1843 NETIF_F_HW_VLAN_CTAG_FILTER);
1844 break;
1845 default:
1846 break;
1847 }
1848 return features;
1849}
1850
66355f52
KY		 1851static int hns_nic_uc_sync(struct net_device *netdev, const unsigned char *addr)
1852{
1853 struct hns_nic_priv *priv = netdev_priv(netdev);
1854 struct hnae_handle *h = priv->ae_handle;
1855
1856 if (h->dev->ops->add_uc_addr)
1857 return h->dev->ops->add_uc_addr(h, addr);
1858
1859 return 0;
1860}
1861
1862static int hns_nic_uc_unsync(struct net_device *netdev,
1863 const unsigned char *addr)
1864{
1865 struct hns_nic_priv *priv = netdev_priv(netdev);
1866 struct hnae_handle *h = priv->ae_handle;
1867
1868 if (h->dev->ops->rm_uc_addr)
1869 return h->dev->ops->rm_uc_addr(h, addr);
1870
1871 return 0;
1872}
1873
b5996f11 1874/**
1875 * nic_set_multicast_list - set mutl mac address
1876 * @netdev: net device
1877 * @p: mac address
1878 *
1879 * return void
1880 */
336a443b 1881static void hns_set_multicast_list(struct net_device *ndev)
b5996f11 1882{
1883 struct hns_nic_priv *priv = netdev_priv(ndev);
1884 struct hnae_handle *h = priv->ae_handle;
1885 struct netdev_hw_addr *ha = NULL;
1886
1887 if (!h) {
1888 netdev_err(ndev, "hnae handle is null\n");
1889 return;
1890 }
1891
ec2cafe6
KY		 1892 if (h->dev->ops->clr_mc_addr)
1893 if (h->dev->ops->clr_mc_addr(h))
1894 netdev_err(ndev, "clear multicast address fail\n");
1895
b5996f11 1896 if (h->dev->ops->set_mc_addr) {
1897 netdev_for_each_mc_addr(ha, ndev)
1898 if (h->dev->ops->set_mc_addr(h, ha->addr))
1899 netdev_err(ndev, "set multicast fail\n");
1900 }
1901}
1902
336a443b 1903static void hns_nic_set_rx_mode(struct net_device *ndev)
4568637f 1904{
1905 struct hns_nic_priv *priv = netdev_priv(ndev);
1906 struct hnae_handle *h = priv->ae_handle;
1907
1908 if (h->dev->ops->set_promisc_mode) {
1909 if (ndev->flags & IFF_PROMISC)
1910 h->dev->ops->set_promisc_mode(h, 1);
1911 else
1912 h->dev->ops->set_promisc_mode(h, 0);
1913 }
1914
1915 hns_set_multicast_list(ndev);
66355f52
KY		 1916
1917 if (__dev_uc_sync(ndev, hns_nic_uc_sync, hns_nic_uc_unsync))
1918 netdev_err(ndev, "sync uc address fail\n");
4568637f 1919}
1920
bc1f4470 1921static void hns_nic_get_stats64(struct net_device *ndev,
1922 struct rtnl_link_stats64 *stats)
b5996f11 1923{
1924 int idx = 0;
1925 u64 tx_bytes = 0;
1926 u64 rx_bytes = 0;
1927 u64 tx_pkts = 0;
1928 u64 rx_pkts = 0;
1929 struct hns_nic_priv *priv = netdev_priv(ndev);
1930 struct hnae_handle *h = priv->ae_handle;
1931
1932 for (idx = 0; idx < h->q_num; idx++) {
1933 tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes;
1934 tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts;
1935 rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes;
1936 rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts;
1937 }
1938
1939 stats->tx_bytes = tx_bytes;
1940 stats->tx_packets = tx_pkts;
1941 stats->rx_bytes = rx_bytes;
1942 stats->rx_packets = rx_pkts;
1943
1944 stats->rx_errors = ndev->stats.rx_errors;
1945 stats->multicast = ndev->stats.multicast;
1946 stats->rx_length_errors = ndev->stats.rx_length_errors;
1947 stats->rx_crc_errors = ndev->stats.rx_crc_errors;
1948 stats->rx_missed_errors = ndev->stats.rx_missed_errors;
1949
1950 stats->tx_errors = ndev->stats.tx_errors;
1951 stats->rx_dropped = ndev->stats.rx_dropped;
1952 stats->tx_dropped = ndev->stats.tx_dropped;
1953 stats->collisions = ndev->stats.collisions;
1954 stats->rx_over_errors = ndev->stats.rx_over_errors;
1955 stats->rx_frame_errors = ndev->stats.rx_frame_errors;
1956 stats->rx_fifo_errors = ndev->stats.rx_fifo_errors;
1957 stats->tx_aborted_errors = ndev->stats.tx_aborted_errors;
1958 stats->tx_carrier_errors = ndev->stats.tx_carrier_errors;
1959 stats->tx_fifo_errors = ndev->stats.tx_fifo_errors;
1960 stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors;
1961 stats->tx_window_errors = ndev->stats.tx_window_errors;
1962 stats->rx_compressed = ndev->stats.rx_compressed;
1963 stats->tx_compressed = ndev->stats.tx_compressed;
b5996f11 1964}
1965
2162a4a1
DH		 1966static u16
1967hns_nic_select_queue(struct net_device *ndev, struct sk_buff *skb,
4f49dec9
AD		 1968 struct net_device *sb_dev,
1969 select_queue_fallback_t fallback)
2162a4a1
DH		 1970{
1971 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
1972 struct hns_nic_priv *priv = netdev_priv(ndev);
1973
1974 /* fix hardware broadcast/multicast packets queue loopback */
1975 if (!AE_IS_VER1(priv->enet_ver) &&
1976 is_multicast_ether_addr(eth_hdr->h_dest))
1977 return 0;
1978 else
8ec56fc3 1979 return fallback(ndev, skb, NULL);
2162a4a1
DH		 1980}
1981
b5996f11 1982static const struct net_device_ops hns_nic_netdev_ops = {
1983 .ndo_open = hns_nic_net_open,
1984 .ndo_stop = hns_nic_net_stop,
1985 .ndo_start_xmit = hns_nic_net_xmit,
1986 .ndo_tx_timeout = hns_nic_net_timeout,
1987 .ndo_set_mac_address = hns_nic_net_set_mac_address,
1988 .ndo_change_mtu = hns_nic_change_mtu,
1989 .ndo_do_ioctl = hns_nic_do_ioctl,
38f616da
S		 1990 .ndo_set_features = hns_nic_set_features,
1991 .ndo_fix_features = hns_nic_fix_features,
b5996f11 1992 .ndo_get_stats64 = hns_nic_get_stats64,
4568637f 1993 .ndo_set_rx_mode = hns_nic_set_rx_mode,
2162a4a1 1994 .ndo_select_queue = hns_nic_select_queue,
b5996f11 1995};
1996
1997static void hns_nic_update_link_status(struct net_device *netdev)
1998{
1999 struct hns_nic_priv *priv = netdev_priv(netdev);
2000
2001 struct hnae_handle *h = priv->ae_handle;
b5996f11 2002
bb7189dc
QX		 2003 if (h->phy_dev) {
2004 if (h->phy_if != PHY_INTERFACE_MODE_XGMII)
2005 return;
b5996f11 2006
bb7189dc 2007 (void)genphy_read_status(h->phy_dev);
b5996f11 2008 }
bb7189dc 2009 hns_nic_adjust_link(netdev);
b5996f11 2010}
2011
2012/* for dumping key regs*/
2013static void hns_nic_dump(struct hns_nic_priv *priv)
2014{
2015 struct hnae_handle *h = priv->ae_handle;
2016 struct hnae_ae_ops *ops = h->dev->ops;
2017 u32 *data, reg_num, i;
2018
2019 if (ops->get_regs_len && ops->get_regs) {
2020 reg_num = ops->get_regs_len(priv->ae_handle);
2021 reg_num = (reg_num + 3ul) & ~3ul;
2022 data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL);
2023 if (data) {
2024 ops->get_regs(priv->ae_handle, data);
2025 for (i = 0; i < reg_num; i += 4)
2026 pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
2027 i, data[i], data[i + 1],
2028 data[i + 2], data[i + 3]);
2029 kfree(data);
2030 }
2031 }
2032
2033 for (i = 0; i < h->q_num; i++) {
2034 pr_info("tx_queue%d_next_to_clean:%d\n",
2035 i, h->qs[i]->tx_ring.next_to_clean);
2036 pr_info("tx_queue%d_next_to_use:%d\n",
2037 i, h->qs[i]->tx_ring.next_to_use);
2038 pr_info("rx_queue%d_next_to_clean:%d\n",
2039 i, h->qs[i]->rx_ring.next_to_clean);
2040 pr_info("rx_queue%d_next_to_use:%d\n",
2041 i, h->qs[i]->rx_ring.next_to_use);
2042 }
2043}
2044
f7211729 2045/* for resetting subtask */
b5996f11 2046static void hns_nic_reset_subtask(struct hns_nic_priv *priv)
2047{
2048 enum hnae_port_type type = priv->ae_handle->port_type;
2049
2050 if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state))
2051 return;
2052 clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
2053
2054 /* If we're already down, removing or resetting, just bail */
2055 if (test_bit(NIC_STATE_DOWN, &priv->state) ||
2056 test_bit(NIC_STATE_REMOVING, &priv->state) ||
2057 test_bit(NIC_STATE_RESETTING, &priv->state))
2058 return;
2059
2060 hns_nic_dump(priv);
13ac695e
S		 2061 netdev_info(priv->netdev, "try to reset %s port!\n",
2062 (type == HNAE_PORT_DEBUG ? "debug" : "service"));
b5996f11 2063
2064 rtnl_lock();
90a505b9 2065 /* put off any impending NetWatchDogTimeout */
860e9538 2066 netif_trans_update(priv->netdev);
76b825ab 2067 hns_nic_net_reinit(priv->netdev);
90a505b9 2068
b5996f11 2069 rtnl_unlock();
2070}
2071
2072/* for doing service complete*/
2073static void hns_nic_service_event_complete(struct hns_nic_priv *priv)
2074{
13ac695e 2075 WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state));
b4957ab0 2076 /* make sure to commit the things */
b5996f11 2077 smp_mb__before_atomic();
2078 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
2079}
2080
2081static void hns_nic_service_task(struct work_struct *work)
2082{
2083 struct hns_nic_priv *priv
2084 = container_of(work, struct hns_nic_priv, service_task);
2085 struct hnae_handle *h = priv->ae_handle;
2086
a57275d3 2087 hns_nic_reset_subtask(priv);
b5996f11 2088 hns_nic_update_link_status(priv->netdev);
2089 h->dev->ops->update_led_status(h);
2090 hns_nic_update_stats(priv->netdev);
2091
b5996f11 2092 hns_nic_service_event_complete(priv);
2093}
2094
2095static void hns_nic_task_schedule(struct hns_nic_priv *priv)
2096{
2097 if (!test_bit(NIC_STATE_DOWN, &priv->state) &&
2098 !test_bit(NIC_STATE_REMOVING, &priv->state) &&
2099 !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state))
2100 (void)schedule_work(&priv->service_task);
2101}
2102
d039ef68 2103static void hns_nic_service_timer(struct timer_list *t)
b5996f11 2104{
d039ef68 2105 struct hns_nic_priv *priv = from_timer(priv, t, service_timer);
b5996f11 2106
2107 (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
2108
2109 hns_nic_task_schedule(priv);
2110}
2111
2112/**
2113 * hns_tx_timeout_reset - initiate reset due to Tx timeout
2114 * @priv: driver private struct
2115 **/
2116static void hns_tx_timeout_reset(struct hns_nic_priv *priv)
2117{
2118 /* Do the reset outside of interrupt context */
2119 if (!test_bit(NIC_STATE_DOWN, &priv->state)) {
2120 set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
2121 netdev_warn(priv->netdev,
2122 "initiating reset due to tx timeout(%llu,0x%lx)\n",
2123 priv->tx_timeout_count, priv->state);
2124 priv->tx_timeout_count++;
2125 hns_nic_task_schedule(priv);
2126 }
2127}
2128
2129static int hns_nic_init_ring_data(struct hns_nic_priv *priv)
2130{
2131 struct hnae_handle *h = priv->ae_handle;
2132 struct hns_nic_ring_data *rd;
4b34aa41 2133 bool is_ver1 = AE_IS_VER1(priv->enet_ver);
b5996f11 2134 int i;
2135
2136 if (h->q_num > NIC_MAX_Q_PER_VF) {
2137 netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num);
2138 return -EINVAL;
2139 }
2140
6396bb22
KC		 2141 priv->ring_data = kzalloc(array3_size(h->q_num,
2142 sizeof(*priv->ring_data), 2),
b5996f11 2143 GFP_KERNEL);
2144 if (!priv->ring_data)
2145 return -ENOMEM;
2146
2147 for (i = 0; i < h->q_num; i++) {
2148 rd = &priv->ring_data[i];
2149 rd->queue_index = i;
2150 rd->ring = &h->qs[i]->tx_ring;
2151 rd->poll_one = hns_nic_tx_poll_one;
cee5add4
DH		 2152 rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro :
2153 hns_nic_tx_fini_pro_v2;
b5996f11 2154
2155 netif_napi_add(priv->netdev, &rd->napi,
2156 hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM);
2157 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
2158 }
2159 for (i = h->q_num; i < h->q_num * 2; i++) {
2160 rd = &priv->ring_data[i];
2161 rd->queue_index = i - h->q_num;
2162 rd->ring = &h->qs[i - h->q_num]->rx_ring;
2163 rd->poll_one = hns_nic_rx_poll_one;
2164 rd->ex_process = hns_nic_rx_up_pro;
cee5add4
DH		 2165 rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro :
2166 hns_nic_rx_fini_pro_v2;
b5996f11 2167
2168 netif_napi_add(priv->netdev, &rd->napi,
2169 hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM);
2170 rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
2171 }
2172
2173 return 0;
2174}
2175
2176static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv)
2177{
2178 struct hnae_handle *h = priv->ae_handle;
2179 int i;
2180
2181 for (i = 0; i < h->q_num * 2; i++) {
2182 netif_napi_del(&priv->ring_data[i].napi);
2183 if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) {
13ac695e
S		 2184 (void)irq_set_affinity_hint(
2185 priv->ring_data[i].ring->irq,
2186 NULL);
b5996f11 2187 free_irq(priv->ring_data[i].ring->irq,
2188 &priv->ring_data[i]);
2189 }
2190
2191 priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED;
2192 }
2193 kfree(priv->ring_data);
2194}
2195
13ac695e
S		 2196static void hns_nic_set_priv_ops(struct net_device *netdev)
2197{
2198 struct hns_nic_priv *priv = netdev_priv(netdev);
64353af6 2199 struct hnae_handle *h = priv->ae_handle;
13ac695e
S		 2200
2201 if (AE_IS_VER1(priv->enet_ver)) {
2202 priv->ops.fill_desc = fill_desc;
2203 priv->ops.get_rxd_bnum = get_rx_desc_bnum;
2204 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
2205 } else {
2206 priv->ops.get_rxd_bnum = get_v2rx_desc_bnum;
64353af6
S		 2207 if ((netdev->features & NETIF_F_TSO) ||
2208 (netdev->features & NETIF_F_TSO6)) {
2209 priv->ops.fill_desc = fill_tso_desc;
2210 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
2211 /* This chip only support 7*4096 */
2212 netif_set_gso_max_size(netdev, 7 * 4096);
64353af6
S		 2213 } else {
2214 priv->ops.fill_desc = fill_v2_desc;
2215 priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
2216 }
6fe27464
DH		 2217 /* enable tso when init
2218 * control tso on/off through TSE bit in bd
2219 */
2220 h->dev->ops->set_tso_stats(h, 1);
13ac695e
S		 2221 }
2222}
2223
b5996f11 2224static int hns_nic_try_get_ae(struct net_device *ndev)
2225{
2226 struct hns_nic_priv *priv = netdev_priv(ndev);
2227 struct hnae_handle *h;
2228 int ret;
2229
2230 h = hnae_get_handle(&priv->netdev->dev,
7b2acae6 2231 priv->fwnode, priv->port_id, NULL);
b5996f11 2232 if (IS_ERR_OR_NULL(h)) {
daa8cfd9 2233 ret = -ENODEV;
b5996f11 2234 dev_dbg(priv->dev, "has not handle, register notifier!\n");
2235 goto out;
2236 }
2237 priv->ae_handle = h;
2238
2239 ret = hns_nic_init_phy(ndev, h);
2240 if (ret) {
2241 dev_err(priv->dev, "probe phy device fail!\n");
2242 goto out_init_phy;
2243 }
2244
2245 ret = hns_nic_init_ring_data(priv);
2246 if (ret) {
2247 ret = -ENOMEM;
2248 goto out_init_ring_data;
2249 }
2250
13ac695e
S		 2251 hns_nic_set_priv_ops(ndev);
2252
b5996f11 2253 ret = register_netdev(ndev);
2254 if (ret) {
2255 dev_err(priv->dev, "probe register netdev fail!\n");
2256 goto out_reg_ndev_fail;
2257 }
2258 return 0;
2259
2260out_reg_ndev_fail:
2261 hns_nic_uninit_ring_data(priv);
2262 priv->ring_data = NULL;
2263out_init_phy:
2264out_init_ring_data:
2265 hnae_put_handle(priv->ae_handle);
2266 priv->ae_handle = NULL;
2267out:
2268 return ret;
2269}
2270
2271static int hns_nic_notifier_action(struct notifier_block *nb,
2272 unsigned long action, void *data)
2273{
2274 struct hns_nic_priv *priv =
2275 container_of(nb, struct hns_nic_priv, notifier_block);
2276
2277 assert(action == HNAE_AE_REGISTER);
2278
2279 if (!hns_nic_try_get_ae(priv->netdev)) {
2280 hnae_unregister_notifier(&priv->notifier_block);
2281 priv->notifier_block.notifier_call = NULL;
2282 }
2283 return 0;
2284}
2285
2286static int hns_nic_dev_probe(struct platform_device *pdev)
2287{
2288 struct device *dev = &pdev->dev;
2289 struct net_device *ndev;
2290 struct hns_nic_priv *priv;
406adee9 2291 u32 port_id;
b5996f11 2292 int ret;
2293
2294 ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF);
2295 if (!ndev)
2296 return -ENOMEM;
2297
2298 platform_set_drvdata(pdev, ndev);
2299
2300 priv = netdev_priv(ndev);
2301 priv->dev = dev;
2302 priv->netdev = ndev;
2303
63434888
KY		 2304 if (dev_of_node(dev)) {
2305 struct device_node *ae_node;
b5996f11 2306
63434888
KY		 2307 if (of_device_is_compatible(dev->of_node,
2308 "hisilicon,hns-nic-v1"))
2309 priv->enet_ver = AE_VERSION_1;
2310 else
2311 priv->enet_ver = AE_VERSION_2;
2312
2313 ae_node = of_parse_phandle(dev->of_node, "ae-handle", 0);
d2083d0e
PB		 2314 if (!ae_node) {
2315 ret = -ENODEV;
63434888
KY		 2316 dev_err(dev, "not find ae-handle\n");
2317 goto out_read_prop_fail;
2318 }
2319 priv->fwnode = &ae_node->fwnode;
2320 } else if (is_acpi_node(dev->fwnode)) {
977d5ad3 2321 struct fwnode_reference_args args;
63434888
KY		 2322
2323 if (acpi_dev_found(hns_enet_acpi_match[0].id))
2324 priv->enet_ver = AE_VERSION_1;
2325 else if (acpi_dev_found(hns_enet_acpi_match[1].id))
2326 priv->enet_ver = AE_VERSION_2;
2327 else
2328 return -ENXIO;
2329
2330 /* try to find port-idx-in-ae first */
2331 ret = acpi_node_get_property_reference(dev->fwnode,
2332 "ae-handle", 0, &args);
2333 if (ret) {
2334 dev_err(dev, "not find ae-handle\n");
2335 goto out_read_prop_fail;
2336 }
977d5ad3
SA		 2337 if (!is_acpi_device_node(args.fwnode)) {
2338 ret = -EINVAL;
2339 goto out_read_prop_fail;
2340 }
2341 priv->fwnode = args.fwnode;
63434888
KY		 2342 } else {
2343 dev_err(dev, "cannot read cfg data from OF or acpi\n");
2344 return -ENXIO;
48189d6a 2345 }
7b2acae6 2346
6162928c 2347 ret = device_property_read_u32(dev, "port-idx-in-ae", &port_id);
406adee9
YZZ		 2348 if (ret) {
2349 /* only for old code compatible */
6162928c 2350 ret = device_property_read_u32(dev, "port-id", &port_id);
406adee9
YZZ		 2351 if (ret)
2352 goto out_read_prop_fail;
2353 /* for old dts, we need to caculate the port offset */
2354 port_id = port_id < HNS_SRV_OFFSET ? port_id + HNS_DEBUG_OFFSET
2355 : port_id - HNS_SRV_OFFSET;
2356 }
2357 priv->port_id = port_id;
b5996f11 2358
2359 hns_init_mac_addr(ndev);
2360
2361 ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT;
2362 ndev->priv_flags |= IFF_UNICAST_FLT;
2363 ndev->netdev_ops = &hns_nic_netdev_ops;
2364 hns_ethtool_set_ops(ndev);
13ac695e 2365
b5996f11 2366 ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2367 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
2368 NETIF_F_GRO;
2369 ndev->vlan_features |=
2370 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM;
2371 ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO;
2372
44770e11
JW		 2373 /* MTU range: 68 - 9578 (v1) or 9706 (v2) */
2374 ndev->min_mtu = MAC_MIN_MTU;
13ac695e
S		 2375 switch (priv->enet_ver) {
2376 case AE_VERSION_2:
64353af6 2377 ndev->features |= NETIF_F_TSO | NETIF_F_TSO6;
13ac695e
S		 2378 ndev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2379 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
64353af6 2380 NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6;
44770e11
JW		 2381 ndev->max_mtu = MAC_MAX_MTU_V2 -
2382 (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
13ac695e
S		 2383 break;
2384 default:
44770e11
JW		 2385 ndev->max_mtu = MAC_MAX_MTU -
2386 (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
13ac695e
S		 2387 break;
2388 }
2389
b5996f11 2390 SET_NETDEV_DEV(ndev, dev);
2391
2392 if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)))
2393 dev_dbg(dev, "set mask to 64bit\n");
2394 else
39c94417 2395 dev_err(dev, "set mask to 64bit fail!\n");
b5996f11 2396
2397 /* carrier off reporting is important to ethtool even BEFORE open */
2398 netif_carrier_off(ndev);
2399
d039ef68 2400 timer_setup(&priv->service_timer, hns_nic_service_timer, 0);
b5996f11 2401 INIT_WORK(&priv->service_task, hns_nic_service_task);
2402
2403 set_bit(NIC_STATE_SERVICE_INITED, &priv->state);
2404 clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
2405 set_bit(NIC_STATE_DOWN, &priv->state);
2406
2407 if (hns_nic_try_get_ae(priv->netdev)) {
2408 priv->notifier_block.notifier_call = hns_nic_notifier_action;
2409 ret = hnae_register_notifier(&priv->notifier_block);
2410 if (ret) {
2411 dev_err(dev, "register notifier fail!\n");
2412 goto out_notify_fail;
2413 }
2414 dev_dbg(dev, "has not handle, register notifier!\n");
2415 }
2416
2417 return 0;
2418
2419out_notify_fail:
2420 (void)cancel_work_sync(&priv->service_task);
48189d6a 2421out_read_prop_fail:
b5996f11 2422 free_netdev(ndev);
2423 return ret;
2424}
2425
2426static int hns_nic_dev_remove(struct platform_device *pdev)
2427{
2428 struct net_device *ndev = platform_get_drvdata(pdev);
2429 struct hns_nic_priv *priv = netdev_priv(ndev);
2430
2431 if (ndev->reg_state != NETREG_UNINITIALIZED)
2432 unregister_netdev(ndev);
2433
2434 if (priv->ring_data)
2435 hns_nic_uninit_ring_data(priv);
2436 priv->ring_data = NULL;
2437
262b38cd
PR		 2438 if (ndev->phydev)
2439 phy_disconnect(ndev->phydev);
b5996f11 2440
2441 if (!IS_ERR_OR_NULL(priv->ae_handle))
2442 hnae_put_handle(priv->ae_handle);
2443 priv->ae_handle = NULL;
2444 if (priv->notifier_block.notifier_call)
2445 hnae_unregister_notifier(&priv->notifier_block);
2446 priv->notifier_block.notifier_call = NULL;
2447
2448 set_bit(NIC_STATE_REMOVING, &priv->state);
2449 (void)cancel_work_sync(&priv->service_task);
2450
2451 free_netdev(ndev);
2452 return 0;
2453}
2454
2455static const struct of_device_id hns_enet_of_match[] = {
2456 {.compatible = "hisilicon,hns-nic-v1",},
2457 {.compatible = "hisilicon,hns-nic-v2",},
2458 {},
2459};
2460
2461MODULE_DEVICE_TABLE(of, hns_enet_of_match);
2462
2463static struct platform_driver hns_nic_dev_driver = {
2464 .driver = {
2465 .name = "hns-nic",
b5996f11 2466 .of_match_table = hns_enet_of_match,
63434888 2467 .acpi_match_table = ACPI_PTR(hns_enet_acpi_match),
b5996f11 2468 },
2469 .probe = hns_nic_dev_probe,
2470 .remove = hns_nic_dev_remove,
2471};
2472
2473module_platform_driver(hns_nic_dev_driver);
2474
2475MODULE_DESCRIPTION("HISILICON HNS Ethernet driver");
2476MODULE_AUTHOR("Hisilicon, Inc.");
2477MODULE_LICENSE("GPL");
2478MODULE_ALIAS("platform:hns-nic");
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