2 * Copyright (c) 2014-2015 Hisilicon Limited.
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.
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>
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>
26 #define NIC_MAX_Q_PER_VF 16
27 #define HNS_NIC_TX_TIMEOUT (5 * HZ)
29 #define SERVICE_TIMER_HZ (1 * HZ)
31 #define NIC_TX_CLEAN_MAX_NUM 256
32 #define NIC_RX_CLEAN_MAX_NUM 64
34 #define RCB_IRQ_NOT_INITED 0
35 #define RCB_IRQ_INITED 1
36 #define HNS_BUFFER_SIZE_2048 2048
38 #define BD_MAX_SEND_SIZE 8191
39 #define SKB_TMP_LEN(SKB) \
40 (((SKB)->transport_header - (SKB)->mac_header) + tcp_hdrlen(SKB))
42 static 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
)
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
];
49 struct ipv6hdr
*ipv6hdr
;
62 desc_cb
->length
= size
;
66 desc
->addr
= cpu_to_le64(dma
);
67 desc
->tx
.send_size
= cpu_to_le16((u16
)size
);
69 /*config bd buffer end */
70 hnae_set_bit(rrcfv
, HNSV2_TXD_VLD_B
, 1);
71 hnae_set_field(bn_pid
, HNSV2_TXD_BUFNUM_M
, 0, buf_num
- 1);
73 if (type
== DESC_TYPE_SKB
) {
74 skb
= (struct sk_buff
*)priv
;
76 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
77 skb_reset_mac_len(skb
);
78 protocol
= skb
->protocol
;
81 if (protocol
== htons(ETH_P_8021Q
)) {
82 ip_offset
+= VLAN_HLEN
;
83 protocol
= vlan_get_protocol(skb
);
84 skb
->protocol
= protocol
;
87 if (skb
->protocol
== htons(ETH_P_IP
)) {
89 hnae_set_bit(rrcfv
, HNSV2_TXD_L3CS_B
, 1);
90 hnae_set_bit(rrcfv
, HNSV2_TXD_L4CS_B
, 1);
92 /* check for tcp/udp header */
93 if (iphdr
->protocol
== IPPROTO_TCP
) {
96 skb_tmp_len
= SKB_TMP_LEN(skb
);
97 l4_len
= tcp_hdrlen(skb
);
98 mss
= mtu
- skb_tmp_len
- ETH_FCS_LEN
;
99 paylen
= skb
->len
- skb_tmp_len
;
101 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
102 hnae_set_bit(tvsvsn
, HNSV2_TXD_IPV6_B
, 1);
103 ipv6hdr
= ipv6_hdr(skb
);
104 hnae_set_bit(rrcfv
, HNSV2_TXD_L4CS_B
, 1);
106 /* check for tcp/udp header */
107 if (ipv6hdr
->nexthdr
== IPPROTO_TCP
) {
110 skb_tmp_len
= SKB_TMP_LEN(skb
);
111 l4_len
= tcp_hdrlen(skb
);
112 mss
= mtu
- skb_tmp_len
- ETH_FCS_LEN
;
113 paylen
= skb
->len
- skb_tmp_len
;
116 desc
->tx
.ip_offset
= ip_offset
;
117 desc
->tx
.tse_vlan_snap_v6_sctp_nth
= tvsvsn
;
118 desc
->tx
.mss
= cpu_to_le16(mss
);
119 desc
->tx
.l4_len
= l4_len
;
120 desc
->tx
.paylen
= cpu_to_le16(paylen
);
124 hnae_set_bit(rrcfv
, HNSV2_TXD_FE_B
, frag_end
);
126 desc
->tx
.bn_pid
= bn_pid
;
127 desc
->tx
.ra_ri_cs_fe_vld
= rrcfv
;
129 ring_ptr_move_fw(ring
, next_to_use
);
132 static void fill_desc(struct hnae_ring
*ring
, void *priv
,
133 int size
, dma_addr_t dma
, int frag_end
,
134 int buf_num
, enum hns_desc_type type
, int mtu
)
136 struct hnae_desc
*desc
= &ring
->desc
[ring
->next_to_use
];
137 struct hnae_desc_cb
*desc_cb
= &ring
->desc_cb
[ring
->next_to_use
];
141 u32 asid_bufnum_pid
= 0;
142 u32 flag_ipoffset
= 0;
144 desc_cb
->priv
= priv
;
145 desc_cb
->length
= size
;
147 desc_cb
->type
= type
;
149 desc
->addr
= cpu_to_le64(dma
);
150 desc
->tx
.send_size
= cpu_to_le16((u16
)size
);
152 /*config bd buffer end */
153 flag_ipoffset
|= 1 << HNS_TXD_VLD_B
;
155 asid_bufnum_pid
|= buf_num
<< HNS_TXD_BUFNUM_S
;
157 if (type
== DESC_TYPE_SKB
) {
158 skb
= (struct sk_buff
*)priv
;
160 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
161 protocol
= skb
->protocol
;
162 ip_offset
= ETH_HLEN
;
164 /*if it is a SW VLAN check the next protocol*/
165 if (protocol
== htons(ETH_P_8021Q
)) {
166 ip_offset
+= VLAN_HLEN
;
167 protocol
= vlan_get_protocol(skb
);
168 skb
->protocol
= protocol
;
171 if (skb
->protocol
== htons(ETH_P_IP
)) {
172 flag_ipoffset
|= 1 << HNS_TXD_L3CS_B
;
173 /* check for tcp/udp header */
174 flag_ipoffset
|= 1 << HNS_TXD_L4CS_B
;
176 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
177 /* ipv6 has not l3 cs, check for L4 header */
178 flag_ipoffset
|= 1 << HNS_TXD_L4CS_B
;
181 flag_ipoffset
|= ip_offset
<< HNS_TXD_IPOFFSET_S
;
185 flag_ipoffset
|= frag_end
<< HNS_TXD_FE_B
;
187 desc
->tx
.asid_bufnum_pid
= cpu_to_le16(asid_bufnum_pid
);
188 desc
->tx
.flag_ipoffset
= cpu_to_le32(flag_ipoffset
);
190 ring_ptr_move_fw(ring
, next_to_use
);
193 static void unfill_desc(struct hnae_ring
*ring
)
195 ring_ptr_move_bw(ring
, next_to_use
);
198 static int hns_nic_maybe_stop_tx(
199 struct sk_buff
**out_skb
, int *bnum
, struct hnae_ring
*ring
)
201 struct sk_buff
*skb
= *out_skb
;
202 struct sk_buff
*new_skb
= NULL
;
205 /* no. of segments (plus a header) */
206 buf_num
= skb_shinfo(skb
)->nr_frags
+ 1;
208 if (unlikely(buf_num
> ring
->max_desc_num_per_pkt
)) {
209 if (ring_space(ring
) < 1)
212 new_skb
= skb_copy(skb
, GFP_ATOMIC
);
216 dev_kfree_skb_any(skb
);
219 } else if (buf_num
> ring_space(ring
)) {
227 static int hns_nic_maybe_stop_tso(
228 struct sk_buff
**out_skb
, int *bnum
, struct hnae_ring
*ring
)
234 struct sk_buff
*skb
= *out_skb
;
235 struct sk_buff
*new_skb
= NULL
;
236 struct skb_frag_struct
*frag
;
238 size
= skb_headlen(skb
);
239 buf_num
= (size
+ BD_MAX_SEND_SIZE
- 1) / BD_MAX_SEND_SIZE
;
241 frag_num
= skb_shinfo(skb
)->nr_frags
;
242 for (i
= 0; i
< frag_num
; i
++) {
243 frag
= &skb_shinfo(skb
)->frags
[i
];
244 size
= skb_frag_size(frag
);
245 buf_num
+= (size
+ BD_MAX_SEND_SIZE
- 1) / BD_MAX_SEND_SIZE
;
248 if (unlikely(buf_num
> ring
->max_desc_num_per_pkt
)) {
249 buf_num
= (skb
->len
+ BD_MAX_SEND_SIZE
- 1) / BD_MAX_SEND_SIZE
;
250 if (ring_space(ring
) < buf_num
)
252 /* manual split the send packet */
253 new_skb
= skb_copy(skb
, GFP_ATOMIC
);
256 dev_kfree_skb_any(skb
);
259 } else if (ring_space(ring
) < buf_num
) {
267 static void fill_tso_desc(struct hnae_ring
*ring
, void *priv
,
268 int size
, dma_addr_t dma
, int frag_end
,
269 int buf_num
, enum hns_desc_type type
, int mtu
)
275 frag_buf_num
= (size
+ BD_MAX_SEND_SIZE
- 1) / BD_MAX_SEND_SIZE
;
276 sizeoflast
= size
% BD_MAX_SEND_SIZE
;
277 sizeoflast
= sizeoflast
? sizeoflast
: BD_MAX_SEND_SIZE
;
279 /* when the frag size is bigger than hardware, split this frag */
280 for (k
= 0; k
< frag_buf_num
; k
++)
281 fill_v2_desc(ring
, priv
,
282 (k
== frag_buf_num
- 1) ?
283 sizeoflast
: BD_MAX_SEND_SIZE
,
284 dma
+ BD_MAX_SEND_SIZE
* k
,
285 frag_end
&& (k
== frag_buf_num
- 1) ? 1 : 0,
287 (type
== DESC_TYPE_SKB
&& !k
) ?
288 DESC_TYPE_SKB
: DESC_TYPE_PAGE
,
292 int hns_nic_net_xmit_hw(struct net_device
*ndev
,
294 struct hns_nic_ring_data
*ring_data
)
296 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
297 struct device
*dev
= priv
->dev
;
298 struct hnae_ring
*ring
= ring_data
->ring
;
299 struct netdev_queue
*dev_queue
;
300 struct skb_frag_struct
*frag
;
304 int size
, next_to_use
;
307 switch (priv
->ops
.maybe_stop_tx(&skb
, &buf_num
, ring
)) {
309 ring
->stats
.tx_busy
++;
310 goto out_net_tx_busy
;
312 ring
->stats
.sw_err_cnt
++;
313 netdev_err(ndev
, "no memory to xmit!\n");
319 /* no. of segments (plus a header) */
320 seg_num
= skb_shinfo(skb
)->nr_frags
+ 1;
321 next_to_use
= ring
->next_to_use
;
323 /* fill the first part */
324 size
= skb_headlen(skb
);
325 dma
= dma_map_single(dev
, skb
->data
, size
, DMA_TO_DEVICE
);
326 if (dma_mapping_error(dev
, dma
)) {
327 netdev_err(ndev
, "TX head DMA map failed\n");
328 ring
->stats
.sw_err_cnt
++;
331 priv
->ops
.fill_desc(ring
, skb
, size
, dma
, seg_num
== 1 ? 1 : 0,
332 buf_num
, DESC_TYPE_SKB
, ndev
->mtu
);
334 /* fill the fragments */
335 for (i
= 1; i
< seg_num
; i
++) {
336 frag
= &skb_shinfo(skb
)->frags
[i
- 1];
337 size
= skb_frag_size(frag
);
338 dma
= skb_frag_dma_map(dev
, frag
, 0, size
, DMA_TO_DEVICE
);
339 if (dma_mapping_error(dev
, dma
)) {
340 netdev_err(ndev
, "TX frag(%d) DMA map failed\n", i
);
341 ring
->stats
.sw_err_cnt
++;
342 goto out_map_frag_fail
;
344 priv
->ops
.fill_desc(ring
, skb_frag_page(frag
), size
, dma
,
345 seg_num
- 1 == i
? 1 : 0, buf_num
,
346 DESC_TYPE_PAGE
, ndev
->mtu
);
349 /*complete translate all packets*/
350 dev_queue
= netdev_get_tx_queue(ndev
, skb
->queue_mapping
);
351 netdev_tx_sent_queue(dev_queue
, skb
->len
);
353 wmb(); /* commit all data before submit */
354 assert(skb
->queue_mapping
< priv
->ae_handle
->q_num
);
355 hnae_queue_xmit(priv
->ae_handle
->qs
[skb
->queue_mapping
], buf_num
);
356 ring
->stats
.tx_pkts
++;
357 ring
->stats
.tx_bytes
+= skb
->len
;
363 while (ring
->next_to_use
!= next_to_use
) {
365 if (ring
->next_to_use
!= next_to_use
)
367 ring
->desc_cb
[ring
->next_to_use
].dma
,
368 ring
->desc_cb
[ring
->next_to_use
].length
,
371 dma_unmap_single(dev
,
372 ring
->desc_cb
[next_to_use
].dma
,
373 ring
->desc_cb
[next_to_use
].length
,
379 dev_kfree_skb_any(skb
);
384 netif_stop_subqueue(ndev
, skb
->queue_mapping
);
386 /* Herbert's original patch had:
387 * smp_mb__after_netif_stop_queue();
388 * but since that doesn't exist yet, just open code it.
391 return NETDEV_TX_BUSY
;
395 * hns_nic_get_headlen - determine size of header for RSC/LRO/GRO/FCOE
396 * @data: pointer to the start of the headers
397 * @max: total length of section to find headers in
399 * This function is meant to determine the length of headers that will
400 * be recognized by hardware for LRO, GRO, and RSC offloads. The main
401 * motivation of doing this is to only perform one pull for IPv4 TCP
402 * packets so that we can do basic things like calculating the gso_size
403 * based on the average data per packet.
405 static unsigned int hns_nic_get_headlen(unsigned char *data
, u32 flag
,
406 unsigned int max_size
)
408 unsigned char *network
;
411 /* this should never happen, but better safe than sorry */
412 if (max_size
< ETH_HLEN
)
415 /* initialize network frame pointer */
418 /* set first protocol and move network header forward */
421 /* handle any vlan tag if present */
422 if (hnae_get_field(flag
, HNS_RXD_VLAN_M
, HNS_RXD_VLAN_S
)
423 == HNS_RX_FLAG_VLAN_PRESENT
) {
424 if ((typeof(max_size
))(network
- data
) > (max_size
- VLAN_HLEN
))
427 network
+= VLAN_HLEN
;
430 /* handle L3 protocols */
431 if (hnae_get_field(flag
, HNS_RXD_L3ID_M
, HNS_RXD_L3ID_S
)
432 == HNS_RX_FLAG_L3ID_IPV4
) {
433 if ((typeof(max_size
))(network
- data
) >
434 (max_size
- sizeof(struct iphdr
)))
437 /* access ihl as a u8 to avoid unaligned access on ia64 */
438 hlen
= (network
[0] & 0x0F) << 2;
440 /* verify hlen meets minimum size requirements */
441 if (hlen
< sizeof(struct iphdr
))
442 return network
- data
;
444 /* record next protocol if header is present */
445 } else if (hnae_get_field(flag
, HNS_RXD_L3ID_M
, HNS_RXD_L3ID_S
)
446 == HNS_RX_FLAG_L3ID_IPV6
) {
447 if ((typeof(max_size
))(network
- data
) >
448 (max_size
- sizeof(struct ipv6hdr
)))
451 /* record next protocol */
452 hlen
= sizeof(struct ipv6hdr
);
454 return network
- data
;
457 /* relocate pointer to start of L4 header */
460 /* finally sort out TCP/UDP */
461 if (hnae_get_field(flag
, HNS_RXD_L4ID_M
, HNS_RXD_L4ID_S
)
462 == HNS_RX_FLAG_L4ID_TCP
) {
463 if ((typeof(max_size
))(network
- data
) >
464 (max_size
- sizeof(struct tcphdr
)))
467 /* access doff as a u8 to avoid unaligned access on ia64 */
468 hlen
= (network
[12] & 0xF0) >> 2;
470 /* verify hlen meets minimum size requirements */
471 if (hlen
< sizeof(struct tcphdr
))
472 return network
- data
;
475 } else if (hnae_get_field(flag
, HNS_RXD_L4ID_M
, HNS_RXD_L4ID_S
)
476 == HNS_RX_FLAG_L4ID_UDP
) {
477 if ((typeof(max_size
))(network
- data
) >
478 (max_size
- sizeof(struct udphdr
)))
481 network
+= sizeof(struct udphdr
);
484 /* If everything has gone correctly network should be the
485 * data section of the packet and will be the end of the header.
486 * If not then it probably represents the end of the last recognized
489 if ((typeof(max_size
))(network
- data
) < max_size
)
490 return network
- data
;
495 static void hns_nic_reuse_page(struct sk_buff
*skb
, int i
,
496 struct hnae_ring
*ring
, int pull_len
,
497 struct hnae_desc_cb
*desc_cb
)
499 struct hnae_desc
*desc
;
504 twobufs
= ((PAGE_SIZE
< 8192) && hnae_buf_size(ring
) == HNS_BUFFER_SIZE_2048
);
506 desc
= &ring
->desc
[ring
->next_to_clean
];
507 size
= le16_to_cpu(desc
->rx
.size
);
510 truesize
= hnae_buf_size(ring
);
512 truesize
= ALIGN(size
, L1_CACHE_BYTES
);
513 last_offset
= hnae_page_size(ring
) - hnae_buf_size(ring
);
516 skb_add_rx_frag(skb
, i
, desc_cb
->priv
, desc_cb
->page_offset
+ pull_len
,
517 size
- pull_len
, truesize
- pull_len
);
519 /* avoid re-using remote pages,flag default unreuse */
520 if (unlikely(page_to_nid(desc_cb
->priv
) != numa_node_id()))
524 /* if we are only owner of page we can reuse it */
525 if (likely(page_count(desc_cb
->priv
) == 1)) {
526 /* flip page offset to other buffer */
527 desc_cb
->page_offset
^= truesize
;
529 desc_cb
->reuse_flag
= 1;
530 /* bump ref count on page before it is given*/
531 get_page(desc_cb
->priv
);
536 /* move offset up to the next cache line */
537 desc_cb
->page_offset
+= truesize
;
539 if (desc_cb
->page_offset
<= last_offset
) {
540 desc_cb
->reuse_flag
= 1;
541 /* bump ref count on page before it is given*/
542 get_page(desc_cb
->priv
);
546 static void get_v2rx_desc_bnum(u32 bnum_flag
, int *out_bnum
)
548 *out_bnum
= hnae_get_field(bnum_flag
,
549 HNS_RXD_BUFNUM_M
, HNS_RXD_BUFNUM_S
) + 1;
552 static void get_rx_desc_bnum(u32 bnum_flag
, int *out_bnum
)
554 *out_bnum
= hnae_get_field(bnum_flag
,
555 HNS_RXD_BUFNUM_M
, HNS_RXD_BUFNUM_S
);
558 static int hns_nic_poll_rx_skb(struct hns_nic_ring_data
*ring_data
,
559 struct sk_buff
**out_skb
, int *out_bnum
)
561 struct hnae_ring
*ring
= ring_data
->ring
;
562 struct net_device
*ndev
= ring_data
->napi
.dev
;
563 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
565 struct hnae_desc
*desc
;
566 struct hnae_desc_cb
*desc_cb
;
572 desc
= &ring
->desc
[ring
->next_to_clean
];
573 desc_cb
= &ring
->desc_cb
[ring
->next_to_clean
];
577 va
= (unsigned char *)desc_cb
->buf
+ desc_cb
->page_offset
;
579 /* prefetch first cache line of first page */
581 #if L1_CACHE_BYTES < 128
582 prefetch(va
+ L1_CACHE_BYTES
);
585 skb
= *out_skb
= napi_alloc_skb(&ring_data
->napi
,
587 if (unlikely(!skb
)) {
588 netdev_err(ndev
, "alloc rx skb fail\n");
589 ring
->stats
.sw_err_cnt
++;
593 prefetchw(skb
->data
);
594 length
= le16_to_cpu(desc
->rx
.pkt_len
);
595 bnum_flag
= le32_to_cpu(desc
->rx
.ipoff_bnum_pid_flag
);
596 priv
->ops
.get_rxd_bnum(bnum_flag
, &bnum
);
599 if (length
<= HNS_RX_HEAD_SIZE
) {
600 memcpy(__skb_put(skb
, length
), va
, ALIGN(length
, sizeof(long)));
602 /* we can reuse buffer as-is, just make sure it is local */
603 if (likely(page_to_nid(desc_cb
->priv
) == numa_node_id()))
604 desc_cb
->reuse_flag
= 1;
605 else /* this page cannot be reused so discard it */
606 put_page(desc_cb
->priv
);
608 ring_ptr_move_fw(ring
, next_to_clean
);
610 if (unlikely(bnum
!= 1)) { /* check err*/
615 ring
->stats
.seg_pkt_cnt
++;
617 pull_len
= hns_nic_get_headlen(va
, bnum_flag
, HNS_RX_HEAD_SIZE
);
618 memcpy(__skb_put(skb
, pull_len
), va
,
619 ALIGN(pull_len
, sizeof(long)));
621 hns_nic_reuse_page(skb
, 0, ring
, pull_len
, desc_cb
);
622 ring_ptr_move_fw(ring
, next_to_clean
);
624 if (unlikely(bnum
>= (int)MAX_SKB_FRAGS
)) { /* check err*/
628 for (i
= 1; i
< bnum
; i
++) {
629 desc
= &ring
->desc
[ring
->next_to_clean
];
630 desc_cb
= &ring
->desc_cb
[ring
->next_to_clean
];
632 hns_nic_reuse_page(skb
, i
, ring
, 0, desc_cb
);
633 ring_ptr_move_fw(ring
, next_to_clean
);
637 /* check except process, free skb and jump the desc */
638 if (unlikely((!bnum
) || (bnum
> ring
->max_desc_num_per_pkt
))) {
640 *out_bnum
= *out_bnum
? *out_bnum
: 1; /* ntc moved,cannot 0*/
641 netdev_err(ndev
, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n",
642 bnum
, ring
->max_desc_num_per_pkt
,
643 length
, (int)MAX_SKB_FRAGS
,
644 ((u64
*)desc
)[0], ((u64
*)desc
)[1]);
645 ring
->stats
.err_bd_num
++;
646 dev_kfree_skb_any(skb
);
650 bnum_flag
= le32_to_cpu(desc
->rx
.ipoff_bnum_pid_flag
);
652 if (unlikely(!hnae_get_bit(bnum_flag
, HNS_RXD_VLD_B
))) {
653 netdev_err(ndev
, "no valid bd,%016llx,%016llx\n",
654 ((u64
*)desc
)[0], ((u64
*)desc
)[1]);
655 ring
->stats
.non_vld_descs
++;
656 dev_kfree_skb_any(skb
);
660 if (unlikely((!desc
->rx
.pkt_len
) ||
661 hnae_get_bit(bnum_flag
, HNS_RXD_DROP_B
))) {
662 ring
->stats
.err_pkt_len
++;
663 dev_kfree_skb_any(skb
);
667 if (unlikely(hnae_get_bit(bnum_flag
, HNS_RXD_L2E_B
))) {
668 ring
->stats
.l2_err
++;
669 dev_kfree_skb_any(skb
);
673 ring
->stats
.rx_pkts
++;
674 ring
->stats
.rx_bytes
+= skb
->len
;
676 if (unlikely(hnae_get_bit(bnum_flag
, HNS_RXD_L3E_B
) ||
677 hnae_get_bit(bnum_flag
, HNS_RXD_L4E_B
))) {
678 ring
->stats
.l3l4_csum_err
++;
682 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
688 hns_nic_alloc_rx_buffers(struct hns_nic_ring_data
*ring_data
, int cleand_count
)
691 struct hnae_desc_cb res_cbs
;
692 struct hnae_desc_cb
*desc_cb
;
693 struct hnae_ring
*ring
= ring_data
->ring
;
694 struct net_device
*ndev
= ring_data
->napi
.dev
;
696 for (i
= 0; i
< cleand_count
; i
++) {
697 desc_cb
= &ring
->desc_cb
[ring
->next_to_use
];
698 if (desc_cb
->reuse_flag
) {
699 ring
->stats
.reuse_pg_cnt
++;
700 hnae_reuse_buffer(ring
, ring
->next_to_use
);
702 ret
= hnae_reserve_buffer_map(ring
, &res_cbs
);
704 ring
->stats
.sw_err_cnt
++;
705 netdev_err(ndev
, "hnae reserve buffer map failed.\n");
708 hnae_replace_buffer(ring
, ring
->next_to_use
, &res_cbs
);
711 ring_ptr_move_fw(ring
, next_to_use
);
714 wmb(); /* make all data has been write before submit */
715 writel_relaxed(i
, ring
->io_base
+ RCB_REG_HEAD
);
718 /* return error number for error or number of desc left to take
720 static void hns_nic_rx_up_pro(struct hns_nic_ring_data
*ring_data
,
723 struct net_device
*ndev
= ring_data
->napi
.dev
;
725 skb
->protocol
= eth_type_trans(skb
, ndev
);
726 (void)napi_gro_receive(&ring_data
->napi
, skb
);
727 ndev
->last_rx
= jiffies
;
730 static int hns_nic_rx_poll_one(struct hns_nic_ring_data
*ring_data
,
733 struct hnae_ring
*ring
= ring_data
->ring
;
735 int num
, bnum
, ex_num
;
736 #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
737 int recv_pkts
, recv_bds
, clean_count
, err
;
739 num
= readl_relaxed(ring
->io_base
+ RCB_REG_FBDNUM
);
740 rmb(); /* make sure num taken effect before the other data is touched */
742 recv_pkts
= 0, recv_bds
= 0, clean_count
= 0;
744 while (recv_pkts
< budget
&& recv_bds
< num
) {
745 /* reuse or realloc buffers*/
746 if (clean_count
>= RCB_NOF_ALLOC_RX_BUFF_ONCE
) {
747 hns_nic_alloc_rx_buffers(ring_data
, clean_count
);
752 err
= hns_nic_poll_rx_skb(ring_data
, &skb
, &bnum
);
753 if (unlikely(!skb
)) /* this fault cannot be repaired */
758 if (unlikely(err
)) { /* do jump the err */
763 /* do update ip stack process*/
764 ((void (*)(struct hns_nic_ring_data
*, struct sk_buff
*))v
)(
769 /* make all data has been write before submit */
770 if (recv_pkts
< budget
) {
771 ex_num
= readl_relaxed(ring
->io_base
+ RCB_REG_FBDNUM
);
773 if (ex_num
> clean_count
) {
774 num
+= ex_num
- clean_count
;
775 rmb(); /*complete read rx ring bd number*/
780 /* make all data has been write before submit */
782 hns_nic_alloc_rx_buffers(ring_data
, clean_count
);
787 static void hns_nic_rx_fini_pro(struct hns_nic_ring_data
*ring_data
)
789 struct hnae_ring
*ring
= ring_data
->ring
;
792 /* for hardware bug fixed */
793 num
= readl_relaxed(ring
->io_base
+ RCB_REG_FBDNUM
);
796 ring_data
->ring
->q
->handle
->dev
->ops
->toggle_ring_irq(
799 napi_schedule(&ring_data
->napi
);
803 static inline void hns_nic_reclaim_one_desc(struct hnae_ring
*ring
,
804 int *bytes
, int *pkts
)
806 struct hnae_desc_cb
*desc_cb
= &ring
->desc_cb
[ring
->next_to_clean
];
808 (*pkts
) += (desc_cb
->type
== DESC_TYPE_SKB
);
809 (*bytes
) += desc_cb
->length
;
810 /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
811 hnae_free_buffer_detach(ring
, ring
->next_to_clean
);
813 ring_ptr_move_fw(ring
, next_to_clean
);
816 static int is_valid_clean_head(struct hnae_ring
*ring
, int h
)
818 int u
= ring
->next_to_use
;
819 int c
= ring
->next_to_clean
;
821 if (unlikely(h
> ring
->desc_num
))
824 assert(u
> 0 && u
< ring
->desc_num
);
825 assert(c
> 0 && c
< ring
->desc_num
);
826 assert(u
!= c
&& h
!= c
); /* must be checked before call this func */
828 return u
> c
? (h
> c
&& h
<= u
) : (h
> c
|| h
<= u
);
831 /* netif_tx_lock will turn down the performance, set only when necessary */
832 #ifdef CONFIG_NET_POLL_CONTROLLER
833 #define NETIF_TX_LOCK(ndev) netif_tx_lock(ndev)
834 #define NETIF_TX_UNLOCK(ndev) netif_tx_unlock(ndev)
836 #define NETIF_TX_LOCK(ndev)
837 #define NETIF_TX_UNLOCK(ndev)
839 /* reclaim all desc in one budget
840 * return error or number of desc left
842 static int hns_nic_tx_poll_one(struct hns_nic_ring_data
*ring_data
,
845 struct hnae_ring
*ring
= ring_data
->ring
;
846 struct net_device
*ndev
= ring_data
->napi
.dev
;
847 struct netdev_queue
*dev_queue
;
848 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
854 head
= readl_relaxed(ring
->io_base
+ RCB_REG_HEAD
);
855 rmb(); /* make sure head is ready before touch any data */
857 if (is_ring_empty(ring
) || head
== ring
->next_to_clean
) {
858 NETIF_TX_UNLOCK(ndev
);
859 return 0; /* no data to poll */
862 if (!is_valid_clean_head(ring
, head
)) {
863 netdev_err(ndev
, "wrong head (%d, %d-%d)\n", head
,
864 ring
->next_to_use
, ring
->next_to_clean
);
865 ring
->stats
.io_err_cnt
++;
866 NETIF_TX_UNLOCK(ndev
);
872 while (head
!= ring
->next_to_clean
) {
873 hns_nic_reclaim_one_desc(ring
, &bytes
, &pkts
);
874 /* issue prefetch for next Tx descriptor */
875 prefetch(&ring
->desc_cb
[ring
->next_to_clean
]);
878 NETIF_TX_UNLOCK(ndev
);
880 dev_queue
= netdev_get_tx_queue(ndev
, ring_data
->queue_index
);
881 netdev_tx_completed_queue(dev_queue
, pkts
, bytes
);
883 if (unlikely(priv
->link
&& !netif_carrier_ok(ndev
)))
884 netif_carrier_on(ndev
);
886 if (unlikely(pkts
&& netif_carrier_ok(ndev
) &&
887 (ring_space(ring
) >= ring
->max_desc_num_per_pkt
* 2))) {
888 /* Make sure that anybody stopping the queue after this
889 * sees the new next_to_clean.
892 if (netif_tx_queue_stopped(dev_queue
) &&
893 !test_bit(NIC_STATE_DOWN
, &priv
->state
)) {
894 netif_tx_wake_queue(dev_queue
);
895 ring
->stats
.restart_queue
++;
901 static void hns_nic_tx_fini_pro(struct hns_nic_ring_data
*ring_data
)
903 struct hnae_ring
*ring
= ring_data
->ring
;
904 int head
= ring
->next_to_clean
;
906 /* for hardware bug fixed */
907 head
= readl_relaxed(ring
->io_base
+ RCB_REG_HEAD
);
909 if (head
!= ring
->next_to_clean
) {
910 ring_data
->ring
->q
->handle
->dev
->ops
->toggle_ring_irq(
913 napi_schedule(&ring_data
->napi
);
917 static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data
*ring_data
)
919 struct hnae_ring
*ring
= ring_data
->ring
;
920 struct net_device
*ndev
= ring_data
->napi
.dev
;
921 struct netdev_queue
*dev_queue
;
927 head
= ring
->next_to_use
; /* ntu :soft setted ring position*/
930 while (head
!= ring
->next_to_clean
)
931 hns_nic_reclaim_one_desc(ring
, &bytes
, &pkts
);
933 NETIF_TX_UNLOCK(ndev
);
935 dev_queue
= netdev_get_tx_queue(ndev
, ring_data
->queue_index
);
936 netdev_tx_reset_queue(dev_queue
);
939 static int hns_nic_common_poll(struct napi_struct
*napi
, int budget
)
941 struct hns_nic_ring_data
*ring_data
=
942 container_of(napi
, struct hns_nic_ring_data
, napi
);
943 int clean_complete
= ring_data
->poll_one(
944 ring_data
, budget
, ring_data
->ex_process
);
946 if (clean_complete
>= 0 && clean_complete
< budget
) {
948 ring_data
->ring
->q
->handle
->dev
->ops
->toggle_ring_irq(
951 ring_data
->fini_process(ring_data
);
955 return clean_complete
;
958 static irqreturn_t
hns_irq_handle(int irq
, void *dev
)
960 struct hns_nic_ring_data
*ring_data
= (struct hns_nic_ring_data
*)dev
;
962 ring_data
->ring
->q
->handle
->dev
->ops
->toggle_ring_irq(
964 napi_schedule(&ring_data
->napi
);
970 *hns_nic_adjust_link - adjust net work mode by the phy stat or new param
973 static void hns_nic_adjust_link(struct net_device
*ndev
)
975 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
976 struct hnae_handle
*h
= priv
->ae_handle
;
978 h
->dev
->ops
->adjust_link(h
, ndev
->phydev
->speed
, ndev
->phydev
->duplex
);
982 *hns_nic_init_phy - init phy
985 * Return 0 on success, negative on failure
987 int hns_nic_init_phy(struct net_device
*ndev
, struct hnae_handle
*h
)
989 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
990 struct phy_device
*phy_dev
= NULL
;
995 if (h
->phy_if
!= PHY_INTERFACE_MODE_XGMII
)
996 phy_dev
= of_phy_connect(ndev
, h
->phy_node
,
997 hns_nic_adjust_link
, 0, h
->phy_if
);
999 phy_dev
= of_phy_attach(ndev
, h
->phy_node
, 0, h
->phy_if
);
1001 if (unlikely(!phy_dev
) || IS_ERR(phy_dev
))
1002 return !phy_dev
? -ENODEV
: PTR_ERR(phy_dev
);
1004 phy_dev
->supported
&= h
->if_support
;
1005 phy_dev
->advertising
= phy_dev
->supported
;
1007 if (h
->phy_if
== PHY_INTERFACE_MODE_XGMII
)
1008 phy_dev
->autoneg
= false;
1010 priv
->phy
= phy_dev
;
1015 static int hns_nic_ring_open(struct net_device
*netdev
, int idx
)
1017 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1018 struct hnae_handle
*h
= priv
->ae_handle
;
1020 napi_enable(&priv
->ring_data
[idx
].napi
);
1022 enable_irq(priv
->ring_data
[idx
].ring
->irq
);
1023 h
->dev
->ops
->toggle_ring_irq(priv
->ring_data
[idx
].ring
, 0);
1028 static int hns_nic_net_set_mac_address(struct net_device
*ndev
, void *p
)
1030 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1031 struct hnae_handle
*h
= priv
->ae_handle
;
1032 struct sockaddr
*mac_addr
= p
;
1035 if (!mac_addr
|| !is_valid_ether_addr((const u8
*)mac_addr
->sa_data
))
1036 return -EADDRNOTAVAIL
;
1038 ret
= h
->dev
->ops
->set_mac_addr(h
, mac_addr
->sa_data
);
1040 netdev_err(ndev
, "set_mac_address fail, ret=%d!\n", ret
);
1044 memcpy(ndev
->dev_addr
, mac_addr
->sa_data
, ndev
->addr_len
);
1049 void hns_nic_update_stats(struct net_device
*netdev
)
1051 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1052 struct hnae_handle
*h
= priv
->ae_handle
;
1054 h
->dev
->ops
->update_stats(h
, &netdev
->stats
);
1057 /* set mac addr if it is configed. or leave it to the AE driver */
1058 static void hns_init_mac_addr(struct net_device
*ndev
)
1060 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1061 struct device_node
*node
= priv
->dev
->of_node
;
1062 const void *mac_addr_temp
;
1064 mac_addr_temp
= of_get_mac_address(node
);
1065 if (mac_addr_temp
&& is_valid_ether_addr(mac_addr_temp
)) {
1066 memcpy(ndev
->dev_addr
, mac_addr_temp
, ndev
->addr_len
);
1068 eth_hw_addr_random(ndev
);
1069 dev_warn(priv
->dev
, "No valid mac, use random mac %pM",
1074 static void hns_nic_ring_close(struct net_device
*netdev
, int idx
)
1076 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1077 struct hnae_handle
*h
= priv
->ae_handle
;
1079 h
->dev
->ops
->toggle_ring_irq(priv
->ring_data
[idx
].ring
, 1);
1080 disable_irq(priv
->ring_data
[idx
].ring
->irq
);
1082 napi_disable(&priv
->ring_data
[idx
].napi
);
1085 static void hns_set_irq_affinity(struct hns_nic_priv
*priv
)
1087 struct hnae_handle
*h
= priv
->ae_handle
;
1088 struct hns_nic_ring_data
*rd
;
1093 /*diffrent irq banlance for 16core and 32core*/
1094 if (h
->q_num
== num_possible_cpus()) {
1095 for (i
= 0; i
< h
->q_num
* 2; i
++) {
1096 rd
= &priv
->ring_data
[i
];
1097 if (cpu_online(rd
->queue_index
)) {
1098 cpumask_clear(&mask
);
1099 cpu
= rd
->queue_index
;
1100 cpumask_set_cpu(cpu
, &mask
);
1101 (void)irq_set_affinity_hint(rd
->ring
->irq
,
1106 for (i
= 0; i
< h
->q_num
; i
++) {
1107 rd
= &priv
->ring_data
[i
];
1108 if (cpu_online(rd
->queue_index
* 2)) {
1109 cpumask_clear(&mask
);
1110 cpu
= rd
->queue_index
* 2;
1111 cpumask_set_cpu(cpu
, &mask
);
1112 (void)irq_set_affinity_hint(rd
->ring
->irq
,
1117 for (i
= h
->q_num
; i
< h
->q_num
* 2; i
++) {
1118 rd
= &priv
->ring_data
[i
];
1119 if (cpu_online(rd
->queue_index
* 2 + 1)) {
1120 cpumask_clear(&mask
);
1121 cpu
= rd
->queue_index
* 2 + 1;
1122 cpumask_set_cpu(cpu
, &mask
);
1123 (void)irq_set_affinity_hint(rd
->ring
->irq
,
1130 static int hns_nic_init_irq(struct hns_nic_priv
*priv
)
1132 struct hnae_handle
*h
= priv
->ae_handle
;
1133 struct hns_nic_ring_data
*rd
;
1137 for (i
= 0; i
< h
->q_num
* 2; i
++) {
1138 rd
= &priv
->ring_data
[i
];
1140 if (rd
->ring
->irq_init_flag
== RCB_IRQ_INITED
)
1143 snprintf(rd
->ring
->ring_name
, RCB_RING_NAME_LEN
,
1144 "%s-%s%d", priv
->netdev
->name
,
1145 (i
< h
->q_num
? "tx" : "rx"), rd
->queue_index
);
1147 rd
->ring
->ring_name
[RCB_RING_NAME_LEN
- 1] = '\0';
1149 ret
= request_irq(rd
->ring
->irq
,
1150 hns_irq_handle
, 0, rd
->ring
->ring_name
, rd
);
1152 netdev_err(priv
->netdev
, "request irq(%d) fail\n",
1156 disable_irq(rd
->ring
->irq
);
1157 rd
->ring
->irq_init_flag
= RCB_IRQ_INITED
;
1160 /*set cpu affinity*/
1161 hns_set_irq_affinity(priv
);
1166 static int hns_nic_net_up(struct net_device
*ndev
)
1168 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1169 struct hnae_handle
*h
= priv
->ae_handle
;
1173 ret
= hns_nic_init_irq(priv
);
1175 netdev_err(ndev
, "hns init irq failed! ret=%d\n", ret
);
1179 for (i
= 0; i
< h
->q_num
* 2; i
++) {
1180 ret
= hns_nic_ring_open(ndev
, i
);
1182 goto out_has_some_queues
;
1185 for (k
= 0; k
< h
->q_num
; k
++)
1186 h
->dev
->ops
->toggle_queue_status(h
->qs
[k
], 1);
1188 ret
= h
->dev
->ops
->set_mac_addr(h
, ndev
->dev_addr
);
1190 goto out_set_mac_addr_err
;
1192 ret
= h
->dev
->ops
->start
? h
->dev
->ops
->start(h
) : 0;
1197 phy_start(priv
->phy
);
1199 clear_bit(NIC_STATE_DOWN
, &priv
->state
);
1200 (void)mod_timer(&priv
->service_timer
, jiffies
+ SERVICE_TIMER_HZ
);
1205 netif_stop_queue(ndev
);
1206 out_set_mac_addr_err
:
1207 for (k
= 0; k
< h
->q_num
; k
++)
1208 h
->dev
->ops
->toggle_queue_status(h
->qs
[k
], 0);
1209 out_has_some_queues
:
1210 for (j
= i
- 1; j
>= 0; j
--)
1211 hns_nic_ring_close(ndev
, j
);
1213 set_bit(NIC_STATE_DOWN
, &priv
->state
);
1218 static void hns_nic_net_down(struct net_device
*ndev
)
1221 struct hnae_ae_ops
*ops
;
1222 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1224 if (test_and_set_bit(NIC_STATE_DOWN
, &priv
->state
))
1227 (void)del_timer_sync(&priv
->service_timer
);
1228 netif_tx_stop_all_queues(ndev
);
1229 netif_carrier_off(ndev
);
1230 netif_tx_disable(ndev
);
1234 phy_stop(priv
->phy
);
1236 ops
= priv
->ae_handle
->dev
->ops
;
1239 ops
->stop(priv
->ae_handle
);
1241 netif_tx_stop_all_queues(ndev
);
1243 for (i
= priv
->ae_handle
->q_num
- 1; i
>= 0; i
--) {
1244 hns_nic_ring_close(ndev
, i
);
1245 hns_nic_ring_close(ndev
, i
+ priv
->ae_handle
->q_num
);
1247 /* clean tx buffers*/
1248 hns_nic_tx_clr_all_bufs(priv
->ring_data
+ i
);
1252 void hns_nic_net_reset(struct net_device
*ndev
)
1254 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1255 struct hnae_handle
*handle
= priv
->ae_handle
;
1257 while (test_and_set_bit(NIC_STATE_RESETTING
, &priv
->state
))
1258 usleep_range(1000, 2000);
1260 (void)hnae_reinit_handle(handle
);
1262 clear_bit(NIC_STATE_RESETTING
, &priv
->state
);
1265 void hns_nic_net_reinit(struct net_device
*netdev
)
1267 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1269 priv
->netdev
->trans_start
= jiffies
;
1270 while (test_and_set_bit(NIC_STATE_REINITING
, &priv
->state
))
1271 usleep_range(1000, 2000);
1273 hns_nic_net_down(netdev
);
1274 hns_nic_net_reset(netdev
);
1275 (void)hns_nic_net_up(netdev
);
1276 clear_bit(NIC_STATE_REINITING
, &priv
->state
);
1279 static int hns_nic_net_open(struct net_device
*ndev
)
1281 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1282 struct hnae_handle
*h
= priv
->ae_handle
;
1285 if (test_bit(NIC_STATE_TESTING
, &priv
->state
))
1289 netif_carrier_off(ndev
);
1291 ret
= netif_set_real_num_tx_queues(ndev
, h
->q_num
);
1293 netdev_err(ndev
, "netif_set_real_num_tx_queues fail, ret=%d!\n",
1298 ret
= netif_set_real_num_rx_queues(ndev
, h
->q_num
);
1301 "netif_set_real_num_rx_queues fail, ret=%d!\n", ret
);
1305 ret
= hns_nic_net_up(ndev
);
1308 "hns net up fail, ret=%d!\n", ret
);
1315 static int hns_nic_net_stop(struct net_device
*ndev
)
1317 hns_nic_net_down(ndev
);
1322 static void hns_tx_timeout_reset(struct hns_nic_priv
*priv
);
1323 static void hns_nic_net_timeout(struct net_device
*ndev
)
1325 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1327 hns_tx_timeout_reset(priv
);
1330 static int hns_nic_do_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
1333 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1334 struct phy_device
*phy_dev
= priv
->phy
;
1336 if (!netif_running(netdev
))
1342 return phy_mii_ioctl(phy_dev
, ifr
, cmd
);
1345 /* use only for netconsole to poll with the device without interrupt */
1346 #ifdef CONFIG_NET_POLL_CONTROLLER
1347 void hns_nic_poll_controller(struct net_device
*ndev
)
1349 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1350 unsigned long flags
;
1353 local_irq_save(flags
);
1354 for (i
= 0; i
< priv
->ae_handle
->q_num
* 2; i
++)
1355 napi_schedule(&priv
->ring_data
[i
].napi
);
1356 local_irq_restore(flags
);
1360 static netdev_tx_t
hns_nic_net_xmit(struct sk_buff
*skb
,
1361 struct net_device
*ndev
)
1363 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1366 assert(skb
->queue_mapping
< ndev
->ae_handle
->q_num
);
1367 ret
= hns_nic_net_xmit_hw(ndev
, skb
,
1368 &tx_ring_data(priv
, skb
->queue_mapping
));
1369 if (ret
== NETDEV_TX_OK
) {
1370 ndev
->trans_start
= jiffies
;
1371 ndev
->stats
.tx_bytes
+= skb
->len
;
1372 ndev
->stats
.tx_packets
++;
1374 return (netdev_tx_t
)ret
;
1377 static int hns_nic_change_mtu(struct net_device
*ndev
, int new_mtu
)
1379 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1380 struct hnae_handle
*h
= priv
->ae_handle
;
1383 /* MTU < 68 is an error and causes problems on some kernels */
1387 if (!h
->dev
->ops
->set_mtu
)
1390 if (netif_running(ndev
)) {
1391 (void)hns_nic_net_stop(ndev
);
1394 ret
= h
->dev
->ops
->set_mtu(h
, new_mtu
);
1396 netdev_err(ndev
, "set mtu fail, return value %d\n",
1399 if (hns_nic_net_open(ndev
))
1400 netdev_err(ndev
, "hns net open fail\n");
1402 ret
= h
->dev
->ops
->set_mtu(h
, new_mtu
);
1406 ndev
->mtu
= new_mtu
;
1411 static int hns_nic_set_features(struct net_device
*netdev
,
1412 netdev_features_t features
)
1414 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1415 struct hnae_handle
*h
= priv
->ae_handle
;
1417 switch (priv
->enet_ver
) {
1419 if (features
& (NETIF_F_TSO
| NETIF_F_TSO6
))
1420 netdev_info(netdev
, "enet v1 do not support tso!\n");
1423 if (features
& (NETIF_F_TSO
| NETIF_F_TSO6
)) {
1424 priv
->ops
.fill_desc
= fill_tso_desc
;
1425 priv
->ops
.maybe_stop_tx
= hns_nic_maybe_stop_tso
;
1426 /* The chip only support 7*4096 */
1427 netif_set_gso_max_size(netdev
, 7 * 4096);
1428 h
->dev
->ops
->set_tso_stats(h
, 1);
1430 priv
->ops
.fill_desc
= fill_v2_desc
;
1431 priv
->ops
.maybe_stop_tx
= hns_nic_maybe_stop_tx
;
1432 h
->dev
->ops
->set_tso_stats(h
, 0);
1436 netdev
->features
= features
;
1440 static netdev_features_t
hns_nic_fix_features(
1441 struct net_device
*netdev
, netdev_features_t features
)
1443 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1445 switch (priv
->enet_ver
) {
1447 features
&= ~(NETIF_F_TSO
| NETIF_F_TSO6
|
1448 NETIF_F_HW_VLAN_CTAG_FILTER
);
1457 * nic_set_multicast_list - set mutl mac address
1458 * @netdev: net device
1463 void hns_set_multicast_list(struct net_device
*ndev
)
1465 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1466 struct hnae_handle
*h
= priv
->ae_handle
;
1467 struct netdev_hw_addr
*ha
= NULL
;
1470 netdev_err(ndev
, "hnae handle is null\n");
1474 if (h
->dev
->ops
->set_mc_addr
) {
1475 netdev_for_each_mc_addr(ha
, ndev
)
1476 if (h
->dev
->ops
->set_mc_addr(h
, ha
->addr
))
1477 netdev_err(ndev
, "set multicast fail\n");
1481 void hns_nic_set_rx_mode(struct net_device
*ndev
)
1483 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1484 struct hnae_handle
*h
= priv
->ae_handle
;
1486 if (h
->dev
->ops
->set_promisc_mode
) {
1487 if (ndev
->flags
& IFF_PROMISC
)
1488 h
->dev
->ops
->set_promisc_mode(h
, 1);
1490 h
->dev
->ops
->set_promisc_mode(h
, 0);
1493 hns_set_multicast_list(ndev
);
1496 struct rtnl_link_stats64
*hns_nic_get_stats64(struct net_device
*ndev
,
1497 struct rtnl_link_stats64
*stats
)
1504 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1505 struct hnae_handle
*h
= priv
->ae_handle
;
1507 for (idx
= 0; idx
< h
->q_num
; idx
++) {
1508 tx_bytes
+= h
->qs
[idx
]->tx_ring
.stats
.tx_bytes
;
1509 tx_pkts
+= h
->qs
[idx
]->tx_ring
.stats
.tx_pkts
;
1510 rx_bytes
+= h
->qs
[idx
]->rx_ring
.stats
.rx_bytes
;
1511 rx_pkts
+= h
->qs
[idx
]->rx_ring
.stats
.rx_pkts
;
1514 stats
->tx_bytes
= tx_bytes
;
1515 stats
->tx_packets
= tx_pkts
;
1516 stats
->rx_bytes
= rx_bytes
;
1517 stats
->rx_packets
= rx_pkts
;
1519 stats
->rx_errors
= ndev
->stats
.rx_errors
;
1520 stats
->multicast
= ndev
->stats
.multicast
;
1521 stats
->rx_length_errors
= ndev
->stats
.rx_length_errors
;
1522 stats
->rx_crc_errors
= ndev
->stats
.rx_crc_errors
;
1523 stats
->rx_missed_errors
= ndev
->stats
.rx_missed_errors
;
1525 stats
->tx_errors
= ndev
->stats
.tx_errors
;
1526 stats
->rx_dropped
= ndev
->stats
.rx_dropped
;
1527 stats
->tx_dropped
= ndev
->stats
.tx_dropped
;
1528 stats
->collisions
= ndev
->stats
.collisions
;
1529 stats
->rx_over_errors
= ndev
->stats
.rx_over_errors
;
1530 stats
->rx_frame_errors
= ndev
->stats
.rx_frame_errors
;
1531 stats
->rx_fifo_errors
= ndev
->stats
.rx_fifo_errors
;
1532 stats
->tx_aborted_errors
= ndev
->stats
.tx_aborted_errors
;
1533 stats
->tx_carrier_errors
= ndev
->stats
.tx_carrier_errors
;
1534 stats
->tx_fifo_errors
= ndev
->stats
.tx_fifo_errors
;
1535 stats
->tx_heartbeat_errors
= ndev
->stats
.tx_heartbeat_errors
;
1536 stats
->tx_window_errors
= ndev
->stats
.tx_window_errors
;
1537 stats
->rx_compressed
= ndev
->stats
.rx_compressed
;
1538 stats
->tx_compressed
= ndev
->stats
.tx_compressed
;
1543 static const struct net_device_ops hns_nic_netdev_ops
= {
1544 .ndo_open
= hns_nic_net_open
,
1545 .ndo_stop
= hns_nic_net_stop
,
1546 .ndo_start_xmit
= hns_nic_net_xmit
,
1547 .ndo_tx_timeout
= hns_nic_net_timeout
,
1548 .ndo_set_mac_address
= hns_nic_net_set_mac_address
,
1549 .ndo_change_mtu
= hns_nic_change_mtu
,
1550 .ndo_do_ioctl
= hns_nic_do_ioctl
,
1551 .ndo_set_features
= hns_nic_set_features
,
1552 .ndo_fix_features
= hns_nic_fix_features
,
1553 .ndo_get_stats64
= hns_nic_get_stats64
,
1554 #ifdef CONFIG_NET_POLL_CONTROLLER
1555 .ndo_poll_controller
= hns_nic_poll_controller
,
1557 .ndo_set_rx_mode
= hns_nic_set_rx_mode
,
1560 static void hns_nic_update_link_status(struct net_device
*netdev
)
1562 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1564 struct hnae_handle
*h
= priv
->ae_handle
;
1568 if (!genphy_update_link(priv
->phy
))
1569 state
= priv
->phy
->link
;
1573 state
= state
&& h
->dev
->ops
->get_status(h
);
1575 if (state
!= priv
->link
) {
1577 netif_carrier_on(netdev
);
1578 netif_tx_wake_all_queues(netdev
);
1579 netdev_info(netdev
, "link up\n");
1581 netif_carrier_off(netdev
);
1582 netdev_info(netdev
, "link down\n");
1588 /* for dumping key regs*/
1589 static void hns_nic_dump(struct hns_nic_priv
*priv
)
1591 struct hnae_handle
*h
= priv
->ae_handle
;
1592 struct hnae_ae_ops
*ops
= h
->dev
->ops
;
1593 u32
*data
, reg_num
, i
;
1595 if (ops
->get_regs_len
&& ops
->get_regs
) {
1596 reg_num
= ops
->get_regs_len(priv
->ae_handle
);
1597 reg_num
= (reg_num
+ 3ul) & ~3ul;
1598 data
= kcalloc(reg_num
, sizeof(u32
), GFP_KERNEL
);
1600 ops
->get_regs(priv
->ae_handle
, data
);
1601 for (i
= 0; i
< reg_num
; i
+= 4)
1602 pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
1603 i
, data
[i
], data
[i
+ 1],
1604 data
[i
+ 2], data
[i
+ 3]);
1609 for (i
= 0; i
< h
->q_num
; i
++) {
1610 pr_info("tx_queue%d_next_to_clean:%d\n",
1611 i
, h
->qs
[i
]->tx_ring
.next_to_clean
);
1612 pr_info("tx_queue%d_next_to_use:%d\n",
1613 i
, h
->qs
[i
]->tx_ring
.next_to_use
);
1614 pr_info("rx_queue%d_next_to_clean:%d\n",
1615 i
, h
->qs
[i
]->rx_ring
.next_to_clean
);
1616 pr_info("rx_queue%d_next_to_use:%d\n",
1617 i
, h
->qs
[i
]->rx_ring
.next_to_use
);
1621 /* for resetting suntask*/
1622 static void hns_nic_reset_subtask(struct hns_nic_priv
*priv
)
1624 enum hnae_port_type type
= priv
->ae_handle
->port_type
;
1626 if (!test_bit(NIC_STATE2_RESET_REQUESTED
, &priv
->state
))
1628 clear_bit(NIC_STATE2_RESET_REQUESTED
, &priv
->state
);
1630 /* If we're already down, removing or resetting, just bail */
1631 if (test_bit(NIC_STATE_DOWN
, &priv
->state
) ||
1632 test_bit(NIC_STATE_REMOVING
, &priv
->state
) ||
1633 test_bit(NIC_STATE_RESETTING
, &priv
->state
))
1637 netdev_info(priv
->netdev
, "try to reset %s port!\n",
1638 (type
== HNAE_PORT_DEBUG
? "debug" : "service"));
1641 /* put off any impending NetWatchDogTimeout */
1642 priv
->netdev
->trans_start
= jiffies
;
1644 if (type
== HNAE_PORT_DEBUG
) {
1645 hns_nic_net_reinit(priv
->netdev
);
1647 netif_carrier_off(priv
->netdev
);
1648 netif_tx_disable(priv
->netdev
);
1653 /* for doing service complete*/
1654 static void hns_nic_service_event_complete(struct hns_nic_priv
*priv
)
1656 WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED
, &priv
->state
));
1658 smp_mb__before_atomic();
1659 clear_bit(NIC_STATE_SERVICE_SCHED
, &priv
->state
);
1662 static void hns_nic_service_task(struct work_struct
*work
)
1664 struct hns_nic_priv
*priv
1665 = container_of(work
, struct hns_nic_priv
, service_task
);
1666 struct hnae_handle
*h
= priv
->ae_handle
;
1668 hns_nic_update_link_status(priv
->netdev
);
1669 h
->dev
->ops
->update_led_status(h
);
1670 hns_nic_update_stats(priv
->netdev
);
1672 hns_nic_reset_subtask(priv
);
1673 hns_nic_service_event_complete(priv
);
1676 static void hns_nic_task_schedule(struct hns_nic_priv
*priv
)
1678 if (!test_bit(NIC_STATE_DOWN
, &priv
->state
) &&
1679 !test_bit(NIC_STATE_REMOVING
, &priv
->state
) &&
1680 !test_and_set_bit(NIC_STATE_SERVICE_SCHED
, &priv
->state
))
1681 (void)schedule_work(&priv
->service_task
);
1684 static void hns_nic_service_timer(unsigned long data
)
1686 struct hns_nic_priv
*priv
= (struct hns_nic_priv
*)data
;
1688 (void)mod_timer(&priv
->service_timer
, jiffies
+ SERVICE_TIMER_HZ
);
1690 hns_nic_task_schedule(priv
);
1694 * hns_tx_timeout_reset - initiate reset due to Tx timeout
1695 * @priv: driver private struct
1697 static void hns_tx_timeout_reset(struct hns_nic_priv
*priv
)
1699 /* Do the reset outside of interrupt context */
1700 if (!test_bit(NIC_STATE_DOWN
, &priv
->state
)) {
1701 set_bit(NIC_STATE2_RESET_REQUESTED
, &priv
->state
);
1702 netdev_warn(priv
->netdev
,
1703 "initiating reset due to tx timeout(%llu,0x%lx)\n",
1704 priv
->tx_timeout_count
, priv
->state
);
1705 priv
->tx_timeout_count
++;
1706 hns_nic_task_schedule(priv
);
1710 static int hns_nic_init_ring_data(struct hns_nic_priv
*priv
)
1712 struct hnae_handle
*h
= priv
->ae_handle
;
1713 struct hns_nic_ring_data
*rd
;
1716 if (h
->q_num
> NIC_MAX_Q_PER_VF
) {
1717 netdev_err(priv
->netdev
, "too much queue (%d)\n", h
->q_num
);
1721 priv
->ring_data
= kzalloc(h
->q_num
* sizeof(*priv
->ring_data
) * 2,
1723 if (!priv
->ring_data
)
1726 for (i
= 0; i
< h
->q_num
; i
++) {
1727 rd
= &priv
->ring_data
[i
];
1728 rd
->queue_index
= i
;
1729 rd
->ring
= &h
->qs
[i
]->tx_ring
;
1730 rd
->poll_one
= hns_nic_tx_poll_one
;
1731 rd
->fini_process
= hns_nic_tx_fini_pro
;
1733 netif_napi_add(priv
->netdev
, &rd
->napi
,
1734 hns_nic_common_poll
, NIC_TX_CLEAN_MAX_NUM
);
1735 rd
->ring
->irq_init_flag
= RCB_IRQ_NOT_INITED
;
1737 for (i
= h
->q_num
; i
< h
->q_num
* 2; i
++) {
1738 rd
= &priv
->ring_data
[i
];
1739 rd
->queue_index
= i
- h
->q_num
;
1740 rd
->ring
= &h
->qs
[i
- h
->q_num
]->rx_ring
;
1741 rd
->poll_one
= hns_nic_rx_poll_one
;
1742 rd
->ex_process
= hns_nic_rx_up_pro
;
1743 rd
->fini_process
= hns_nic_rx_fini_pro
;
1745 netif_napi_add(priv
->netdev
, &rd
->napi
,
1746 hns_nic_common_poll
, NIC_RX_CLEAN_MAX_NUM
);
1747 rd
->ring
->irq_init_flag
= RCB_IRQ_NOT_INITED
;
1753 static void hns_nic_uninit_ring_data(struct hns_nic_priv
*priv
)
1755 struct hnae_handle
*h
= priv
->ae_handle
;
1758 for (i
= 0; i
< h
->q_num
* 2; i
++) {
1759 netif_napi_del(&priv
->ring_data
[i
].napi
);
1760 if (priv
->ring_data
[i
].ring
->irq_init_flag
== RCB_IRQ_INITED
) {
1761 (void)irq_set_affinity_hint(
1762 priv
->ring_data
[i
].ring
->irq
,
1764 free_irq(priv
->ring_data
[i
].ring
->irq
,
1765 &priv
->ring_data
[i
]);
1768 priv
->ring_data
[i
].ring
->irq_init_flag
= RCB_IRQ_NOT_INITED
;
1770 kfree(priv
->ring_data
);
1773 static void hns_nic_set_priv_ops(struct net_device
*netdev
)
1775 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1776 struct hnae_handle
*h
= priv
->ae_handle
;
1778 if (AE_IS_VER1(priv
->enet_ver
)) {
1779 priv
->ops
.fill_desc
= fill_desc
;
1780 priv
->ops
.get_rxd_bnum
= get_rx_desc_bnum
;
1781 priv
->ops
.maybe_stop_tx
= hns_nic_maybe_stop_tx
;
1783 priv
->ops
.get_rxd_bnum
= get_v2rx_desc_bnum
;
1784 if ((netdev
->features
& NETIF_F_TSO
) ||
1785 (netdev
->features
& NETIF_F_TSO6
)) {
1786 priv
->ops
.fill_desc
= fill_tso_desc
;
1787 priv
->ops
.maybe_stop_tx
= hns_nic_maybe_stop_tso
;
1788 /* This chip only support 7*4096 */
1789 netif_set_gso_max_size(netdev
, 7 * 4096);
1790 h
->dev
->ops
->set_tso_stats(h
, 1);
1792 priv
->ops
.fill_desc
= fill_v2_desc
;
1793 priv
->ops
.maybe_stop_tx
= hns_nic_maybe_stop_tx
;
1798 static int hns_nic_try_get_ae(struct net_device
*ndev
)
1800 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1801 struct hnae_handle
*h
;
1804 h
= hnae_get_handle(&priv
->netdev
->dev
,
1805 priv
->ae_node
, priv
->port_id
, NULL
);
1806 if (IS_ERR_OR_NULL(h
)) {
1808 dev_dbg(priv
->dev
, "has not handle, register notifier!\n");
1811 priv
->ae_handle
= h
;
1813 ret
= hns_nic_init_phy(ndev
, h
);
1815 dev_err(priv
->dev
, "probe phy device fail!\n");
1819 ret
= hns_nic_init_ring_data(priv
);
1822 goto out_init_ring_data
;
1825 hns_nic_set_priv_ops(ndev
);
1827 ret
= register_netdev(ndev
);
1829 dev_err(priv
->dev
, "probe register netdev fail!\n");
1830 goto out_reg_ndev_fail
;
1835 hns_nic_uninit_ring_data(priv
);
1836 priv
->ring_data
= NULL
;
1839 hnae_put_handle(priv
->ae_handle
);
1840 priv
->ae_handle
= NULL
;
1845 static int hns_nic_notifier_action(struct notifier_block
*nb
,
1846 unsigned long action
, void *data
)
1848 struct hns_nic_priv
*priv
=
1849 container_of(nb
, struct hns_nic_priv
, notifier_block
);
1851 assert(action
== HNAE_AE_REGISTER
);
1853 if (!hns_nic_try_get_ae(priv
->netdev
)) {
1854 hnae_unregister_notifier(&priv
->notifier_block
);
1855 priv
->notifier_block
.notifier_call
= NULL
;
1860 static int hns_nic_dev_probe(struct platform_device
*pdev
)
1862 struct device
*dev
= &pdev
->dev
;
1863 struct net_device
*ndev
;
1864 struct hns_nic_priv
*priv
;
1865 struct device_node
*node
= dev
->of_node
;
1868 ndev
= alloc_etherdev_mq(sizeof(struct hns_nic_priv
), NIC_MAX_Q_PER_VF
);
1872 platform_set_drvdata(pdev
, ndev
);
1874 priv
= netdev_priv(ndev
);
1876 priv
->netdev
= ndev
;
1878 if (of_device_is_compatible(node
, "hisilicon,hns-nic-v1"))
1879 priv
->enet_ver
= AE_VERSION_1
;
1881 priv
->enet_ver
= AE_VERSION_2
;
1883 priv
->ae_node
= (void *)of_parse_phandle(node
, "ae-handle", 0);
1884 if (IS_ERR_OR_NULL(priv
->ae_node
)) {
1885 ret
= PTR_ERR(priv
->ae_node
);
1886 dev_err(dev
, "not find ae-handle\n");
1887 goto out_read_prop_fail
;
1890 ret
= of_property_read_u32(node
, "port-id", &priv
->port_id
);
1892 goto out_read_prop_fail
;
1894 hns_init_mac_addr(ndev
);
1896 ndev
->watchdog_timeo
= HNS_NIC_TX_TIMEOUT
;
1897 ndev
->priv_flags
|= IFF_UNICAST_FLT
;
1898 ndev
->netdev_ops
= &hns_nic_netdev_ops
;
1899 hns_ethtool_set_ops(ndev
);
1901 ndev
->features
|= NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
|
1902 NETIF_F_RXCSUM
| NETIF_F_SG
| NETIF_F_GSO
|
1904 ndev
->vlan_features
|=
1905 NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
| NETIF_F_RXCSUM
;
1906 ndev
->vlan_features
|= NETIF_F_SG
| NETIF_F_GSO
| NETIF_F_GRO
;
1908 switch (priv
->enet_ver
) {
1910 ndev
->features
|= NETIF_F_TSO
| NETIF_F_TSO6
;
1911 ndev
->hw_features
|= NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
|
1912 NETIF_F_RXCSUM
| NETIF_F_SG
| NETIF_F_GSO
|
1913 NETIF_F_GRO
| NETIF_F_TSO
| NETIF_F_TSO6
;
1919 SET_NETDEV_DEV(ndev
, dev
);
1921 if (!dma_set_mask_and_coherent(dev
, DMA_BIT_MASK(64)))
1922 dev_dbg(dev
, "set mask to 64bit\n");
1924 dev_err(dev
, "set mask to 32bit fail!\n");
1926 /* carrier off reporting is important to ethtool even BEFORE open */
1927 netif_carrier_off(ndev
);
1929 setup_timer(&priv
->service_timer
, hns_nic_service_timer
,
1930 (unsigned long)priv
);
1931 INIT_WORK(&priv
->service_task
, hns_nic_service_task
);
1933 set_bit(NIC_STATE_SERVICE_INITED
, &priv
->state
);
1934 clear_bit(NIC_STATE_SERVICE_SCHED
, &priv
->state
);
1935 set_bit(NIC_STATE_DOWN
, &priv
->state
);
1937 if (hns_nic_try_get_ae(priv
->netdev
)) {
1938 priv
->notifier_block
.notifier_call
= hns_nic_notifier_action
;
1939 ret
= hnae_register_notifier(&priv
->notifier_block
);
1941 dev_err(dev
, "register notifier fail!\n");
1942 goto out_notify_fail
;
1944 dev_dbg(dev
, "has not handle, register notifier!\n");
1950 (void)cancel_work_sync(&priv
->service_task
);
1956 static int hns_nic_dev_remove(struct platform_device
*pdev
)
1958 struct net_device
*ndev
= platform_get_drvdata(pdev
);
1959 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1961 if (ndev
->reg_state
!= NETREG_UNINITIALIZED
)
1962 unregister_netdev(ndev
);
1964 if (priv
->ring_data
)
1965 hns_nic_uninit_ring_data(priv
);
1966 priv
->ring_data
= NULL
;
1969 phy_disconnect(priv
->phy
);
1972 if (!IS_ERR_OR_NULL(priv
->ae_handle
))
1973 hnae_put_handle(priv
->ae_handle
);
1974 priv
->ae_handle
= NULL
;
1975 if (priv
->notifier_block
.notifier_call
)
1976 hnae_unregister_notifier(&priv
->notifier_block
);
1977 priv
->notifier_block
.notifier_call
= NULL
;
1979 set_bit(NIC_STATE_REMOVING
, &priv
->state
);
1980 (void)cancel_work_sync(&priv
->service_task
);
1986 static const struct of_device_id hns_enet_of_match
[] = {
1987 {.compatible
= "hisilicon,hns-nic-v1",},
1988 {.compatible
= "hisilicon,hns-nic-v2",},
1992 MODULE_DEVICE_TABLE(of
, hns_enet_of_match
);
1994 static struct platform_driver hns_nic_dev_driver
= {
1997 .of_match_table
= hns_enet_of_match
,
1999 .probe
= hns_nic_dev_probe
,
2000 .remove
= hns_nic_dev_remove
,
2003 module_platform_driver(hns_nic_dev_driver
);
2005 MODULE_DESCRIPTION("HISILICON HNS Ethernet driver");
2006 MODULE_AUTHOR("Hisilicon, Inc.");
2007 MODULE_LICENSE("GPL");
2008 MODULE_ALIAS("platform:hns-nic");