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
;
61 desc_cb
->length
= size
;
65 desc
->addr
= cpu_to_le64(dma
);
66 desc
->tx
.send_size
= cpu_to_le16((u16
)size
);
68 /* config bd buffer end */
69 hnae_set_bit(rrcfv
, HNSV2_TXD_VLD_B
, 1);
70 hnae_set_field(bn_pid
, HNSV2_TXD_BUFNUM_M
, 0, buf_num
- 1);
72 /* fill port_id in the tx bd for sending management pkts */
73 hnae_set_field(bn_pid
, HNSV2_TXD_PORTID_M
,
74 HNSV2_TXD_PORTID_S
, ring
->q
->handle
->dport_id
);
76 if (type
== DESC_TYPE_SKB
) {
77 skb
= (struct sk_buff
*)priv
;
79 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
80 skb_reset_mac_len(skb
);
81 protocol
= skb
->protocol
;
84 if (protocol
== htons(ETH_P_8021Q
)) {
85 ip_offset
+= VLAN_HLEN
;
86 protocol
= vlan_get_protocol(skb
);
87 skb
->protocol
= protocol
;
90 if (skb
->protocol
== htons(ETH_P_IP
)) {
92 hnae_set_bit(rrcfv
, HNSV2_TXD_L3CS_B
, 1);
93 hnae_set_bit(rrcfv
, HNSV2_TXD_L4CS_B
, 1);
95 /* check for tcp/udp header */
96 if (iphdr
->protocol
== IPPROTO_TCP
&&
100 l4_len
= tcp_hdrlen(skb
);
101 mss
= skb_shinfo(skb
)->gso_size
;
102 paylen
= skb
->len
- SKB_TMP_LEN(skb
);
104 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
105 hnae_set_bit(tvsvsn
, HNSV2_TXD_IPV6_B
, 1);
106 ipv6hdr
= ipv6_hdr(skb
);
107 hnae_set_bit(rrcfv
, HNSV2_TXD_L4CS_B
, 1);
109 /* check for tcp/udp header */
110 if (ipv6hdr
->nexthdr
== IPPROTO_TCP
&&
111 skb_is_gso(skb
) && skb_is_gso_v6(skb
)) {
114 l4_len
= tcp_hdrlen(skb
);
115 mss
= skb_shinfo(skb
)->gso_size
;
116 paylen
= skb
->len
- SKB_TMP_LEN(skb
);
119 desc
->tx
.ip_offset
= ip_offset
;
120 desc
->tx
.tse_vlan_snap_v6_sctp_nth
= tvsvsn
;
121 desc
->tx
.mss
= cpu_to_le16(mss
);
122 desc
->tx
.l4_len
= l4_len
;
123 desc
->tx
.paylen
= cpu_to_le16(paylen
);
127 hnae_set_bit(rrcfv
, HNSV2_TXD_FE_B
, frag_end
);
129 desc
->tx
.bn_pid
= bn_pid
;
130 desc
->tx
.ra_ri_cs_fe_vld
= rrcfv
;
132 ring_ptr_move_fw(ring
, next_to_use
);
135 static void fill_desc(struct hnae_ring
*ring
, void *priv
,
136 int size
, dma_addr_t dma
, int frag_end
,
137 int buf_num
, enum hns_desc_type type
, int mtu
)
139 struct hnae_desc
*desc
= &ring
->desc
[ring
->next_to_use
];
140 struct hnae_desc_cb
*desc_cb
= &ring
->desc_cb
[ring
->next_to_use
];
144 u32 asid_bufnum_pid
= 0;
145 u32 flag_ipoffset
= 0;
147 desc_cb
->priv
= priv
;
148 desc_cb
->length
= size
;
150 desc_cb
->type
= type
;
152 desc
->addr
= cpu_to_le64(dma
);
153 desc
->tx
.send_size
= cpu_to_le16((u16
)size
);
155 /*config bd buffer end */
156 flag_ipoffset
|= 1 << HNS_TXD_VLD_B
;
158 asid_bufnum_pid
|= buf_num
<< HNS_TXD_BUFNUM_S
;
160 if (type
== DESC_TYPE_SKB
) {
161 skb
= (struct sk_buff
*)priv
;
163 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
164 protocol
= skb
->protocol
;
165 ip_offset
= ETH_HLEN
;
167 /*if it is a SW VLAN check the next protocol*/
168 if (protocol
== htons(ETH_P_8021Q
)) {
169 ip_offset
+= VLAN_HLEN
;
170 protocol
= vlan_get_protocol(skb
);
171 skb
->protocol
= protocol
;
174 if (skb
->protocol
== htons(ETH_P_IP
)) {
175 flag_ipoffset
|= 1 << HNS_TXD_L3CS_B
;
176 /* check for tcp/udp header */
177 flag_ipoffset
|= 1 << HNS_TXD_L4CS_B
;
179 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
180 /* ipv6 has not l3 cs, check for L4 header */
181 flag_ipoffset
|= 1 << HNS_TXD_L4CS_B
;
184 flag_ipoffset
|= ip_offset
<< HNS_TXD_IPOFFSET_S
;
188 flag_ipoffset
|= frag_end
<< HNS_TXD_FE_B
;
190 desc
->tx
.asid_bufnum_pid
= cpu_to_le16(asid_bufnum_pid
);
191 desc
->tx
.flag_ipoffset
= cpu_to_le32(flag_ipoffset
);
193 ring_ptr_move_fw(ring
, next_to_use
);
196 static void unfill_desc(struct hnae_ring
*ring
)
198 ring_ptr_move_bw(ring
, next_to_use
);
201 static int hns_nic_maybe_stop_tx(
202 struct sk_buff
**out_skb
, int *bnum
, struct hnae_ring
*ring
)
204 struct sk_buff
*skb
= *out_skb
;
205 struct sk_buff
*new_skb
= NULL
;
208 /* no. of segments (plus a header) */
209 buf_num
= skb_shinfo(skb
)->nr_frags
+ 1;
211 if (unlikely(buf_num
> ring
->max_desc_num_per_pkt
)) {
212 if (ring_space(ring
) < 1)
215 new_skb
= skb_copy(skb
, GFP_ATOMIC
);
219 dev_kfree_skb_any(skb
);
222 } else if (buf_num
> ring_space(ring
)) {
230 static int hns_nic_maybe_stop_tso(
231 struct sk_buff
**out_skb
, int *bnum
, struct hnae_ring
*ring
)
237 struct sk_buff
*skb
= *out_skb
;
238 struct sk_buff
*new_skb
= NULL
;
239 struct skb_frag_struct
*frag
;
241 size
= skb_headlen(skb
);
242 buf_num
= (size
+ BD_MAX_SEND_SIZE
- 1) / BD_MAX_SEND_SIZE
;
244 frag_num
= skb_shinfo(skb
)->nr_frags
;
245 for (i
= 0; i
< frag_num
; i
++) {
246 frag
= &skb_shinfo(skb
)->frags
[i
];
247 size
= skb_frag_size(frag
);
248 buf_num
+= (size
+ BD_MAX_SEND_SIZE
- 1) / BD_MAX_SEND_SIZE
;
251 if (unlikely(buf_num
> ring
->max_desc_num_per_pkt
)) {
252 buf_num
= (skb
->len
+ BD_MAX_SEND_SIZE
- 1) / BD_MAX_SEND_SIZE
;
253 if (ring_space(ring
) < buf_num
)
255 /* manual split the send packet */
256 new_skb
= skb_copy(skb
, GFP_ATOMIC
);
259 dev_kfree_skb_any(skb
);
262 } else if (ring_space(ring
) < buf_num
) {
270 static void fill_tso_desc(struct hnae_ring
*ring
, void *priv
,
271 int size
, dma_addr_t dma
, int frag_end
,
272 int buf_num
, enum hns_desc_type type
, int mtu
)
278 frag_buf_num
= (size
+ BD_MAX_SEND_SIZE
- 1) / BD_MAX_SEND_SIZE
;
279 sizeoflast
= size
% BD_MAX_SEND_SIZE
;
280 sizeoflast
= sizeoflast
? sizeoflast
: BD_MAX_SEND_SIZE
;
282 /* when the frag size is bigger than hardware, split this frag */
283 for (k
= 0; k
< frag_buf_num
; k
++)
284 fill_v2_desc(ring
, priv
,
285 (k
== frag_buf_num
- 1) ?
286 sizeoflast
: BD_MAX_SEND_SIZE
,
287 dma
+ BD_MAX_SEND_SIZE
* k
,
288 frag_end
&& (k
== frag_buf_num
- 1) ? 1 : 0,
290 (type
== DESC_TYPE_SKB
&& !k
) ?
291 DESC_TYPE_SKB
: DESC_TYPE_PAGE
,
295 int hns_nic_net_xmit_hw(struct net_device
*ndev
,
297 struct hns_nic_ring_data
*ring_data
)
299 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
300 struct device
*dev
= priv
->dev
;
301 struct hnae_ring
*ring
= ring_data
->ring
;
302 struct netdev_queue
*dev_queue
;
303 struct skb_frag_struct
*frag
;
307 int size
, next_to_use
;
310 switch (priv
->ops
.maybe_stop_tx(&skb
, &buf_num
, ring
)) {
312 ring
->stats
.tx_busy
++;
313 goto out_net_tx_busy
;
315 ring
->stats
.sw_err_cnt
++;
316 netdev_err(ndev
, "no memory to xmit!\n");
322 /* no. of segments (plus a header) */
323 seg_num
= skb_shinfo(skb
)->nr_frags
+ 1;
324 next_to_use
= ring
->next_to_use
;
326 /* fill the first part */
327 size
= skb_headlen(skb
);
328 dma
= dma_map_single(dev
, skb
->data
, size
, DMA_TO_DEVICE
);
329 if (dma_mapping_error(dev
, dma
)) {
330 netdev_err(ndev
, "TX head DMA map failed\n");
331 ring
->stats
.sw_err_cnt
++;
334 priv
->ops
.fill_desc(ring
, skb
, size
, dma
, seg_num
== 1 ? 1 : 0,
335 buf_num
, DESC_TYPE_SKB
, ndev
->mtu
);
337 /* fill the fragments */
338 for (i
= 1; i
< seg_num
; i
++) {
339 frag
= &skb_shinfo(skb
)->frags
[i
- 1];
340 size
= skb_frag_size(frag
);
341 dma
= skb_frag_dma_map(dev
, frag
, 0, size
, DMA_TO_DEVICE
);
342 if (dma_mapping_error(dev
, dma
)) {
343 netdev_err(ndev
, "TX frag(%d) DMA map failed\n", i
);
344 ring
->stats
.sw_err_cnt
++;
345 goto out_map_frag_fail
;
347 priv
->ops
.fill_desc(ring
, skb_frag_page(frag
), size
, dma
,
348 seg_num
- 1 == i
? 1 : 0, buf_num
,
349 DESC_TYPE_PAGE
, ndev
->mtu
);
352 /*complete translate all packets*/
353 dev_queue
= netdev_get_tx_queue(ndev
, skb
->queue_mapping
);
354 netdev_tx_sent_queue(dev_queue
, skb
->len
);
356 wmb(); /* commit all data before submit */
357 assert(skb
->queue_mapping
< priv
->ae_handle
->q_num
);
358 hnae_queue_xmit(priv
->ae_handle
->qs
[skb
->queue_mapping
], buf_num
);
359 ring
->stats
.tx_pkts
++;
360 ring
->stats
.tx_bytes
+= skb
->len
;
366 while (ring
->next_to_use
!= next_to_use
) {
368 if (ring
->next_to_use
!= next_to_use
)
370 ring
->desc_cb
[ring
->next_to_use
].dma
,
371 ring
->desc_cb
[ring
->next_to_use
].length
,
374 dma_unmap_single(dev
,
375 ring
->desc_cb
[next_to_use
].dma
,
376 ring
->desc_cb
[next_to_use
].length
,
382 dev_kfree_skb_any(skb
);
387 netif_stop_subqueue(ndev
, skb
->queue_mapping
);
389 /* Herbert's original patch had:
390 * smp_mb__after_netif_stop_queue();
391 * but since that doesn't exist yet, just open code it.
394 return NETDEV_TX_BUSY
;
398 * hns_nic_get_headlen - determine size of header for RSC/LRO/GRO/FCOE
399 * @data: pointer to the start of the headers
400 * @max: total length of section to find headers in
402 * This function is meant to determine the length of headers that will
403 * be recognized by hardware for LRO, GRO, and RSC offloads. The main
404 * motivation of doing this is to only perform one pull for IPv4 TCP
405 * packets so that we can do basic things like calculating the gso_size
406 * based on the average data per packet.
408 static unsigned int hns_nic_get_headlen(unsigned char *data
, u32 flag
,
409 unsigned int max_size
)
411 unsigned char *network
;
414 /* this should never happen, but better safe than sorry */
415 if (max_size
< ETH_HLEN
)
418 /* initialize network frame pointer */
421 /* set first protocol and move network header forward */
424 /* handle any vlan tag if present */
425 if (hnae_get_field(flag
, HNS_RXD_VLAN_M
, HNS_RXD_VLAN_S
)
426 == HNS_RX_FLAG_VLAN_PRESENT
) {
427 if ((typeof(max_size
))(network
- data
) > (max_size
- VLAN_HLEN
))
430 network
+= VLAN_HLEN
;
433 /* handle L3 protocols */
434 if (hnae_get_field(flag
, HNS_RXD_L3ID_M
, HNS_RXD_L3ID_S
)
435 == HNS_RX_FLAG_L3ID_IPV4
) {
436 if ((typeof(max_size
))(network
- data
) >
437 (max_size
- sizeof(struct iphdr
)))
440 /* access ihl as a u8 to avoid unaligned access on ia64 */
441 hlen
= (network
[0] & 0x0F) << 2;
443 /* verify hlen meets minimum size requirements */
444 if (hlen
< sizeof(struct iphdr
))
445 return network
- data
;
447 /* record next protocol if header is present */
448 } else if (hnae_get_field(flag
, HNS_RXD_L3ID_M
, HNS_RXD_L3ID_S
)
449 == HNS_RX_FLAG_L3ID_IPV6
) {
450 if ((typeof(max_size
))(network
- data
) >
451 (max_size
- sizeof(struct ipv6hdr
)))
454 /* record next protocol */
455 hlen
= sizeof(struct ipv6hdr
);
457 return network
- data
;
460 /* relocate pointer to start of L4 header */
463 /* finally sort out TCP/UDP */
464 if (hnae_get_field(flag
, HNS_RXD_L4ID_M
, HNS_RXD_L4ID_S
)
465 == HNS_RX_FLAG_L4ID_TCP
) {
466 if ((typeof(max_size
))(network
- data
) >
467 (max_size
- sizeof(struct tcphdr
)))
470 /* access doff as a u8 to avoid unaligned access on ia64 */
471 hlen
= (network
[12] & 0xF0) >> 2;
473 /* verify hlen meets minimum size requirements */
474 if (hlen
< sizeof(struct tcphdr
))
475 return network
- data
;
478 } else if (hnae_get_field(flag
, HNS_RXD_L4ID_M
, HNS_RXD_L4ID_S
)
479 == HNS_RX_FLAG_L4ID_UDP
) {
480 if ((typeof(max_size
))(network
- data
) >
481 (max_size
- sizeof(struct udphdr
)))
484 network
+= sizeof(struct udphdr
);
487 /* If everything has gone correctly network should be the
488 * data section of the packet and will be the end of the header.
489 * If not then it probably represents the end of the last recognized
492 if ((typeof(max_size
))(network
- data
) < max_size
)
493 return network
- data
;
498 static void hns_nic_reuse_page(struct sk_buff
*skb
, int i
,
499 struct hnae_ring
*ring
, int pull_len
,
500 struct hnae_desc_cb
*desc_cb
)
502 struct hnae_desc
*desc
;
507 twobufs
= ((PAGE_SIZE
< 8192) && hnae_buf_size(ring
) == HNS_BUFFER_SIZE_2048
);
509 desc
= &ring
->desc
[ring
->next_to_clean
];
510 size
= le16_to_cpu(desc
->rx
.size
);
513 truesize
= hnae_buf_size(ring
);
515 truesize
= ALIGN(size
, L1_CACHE_BYTES
);
516 last_offset
= hnae_page_size(ring
) - hnae_buf_size(ring
);
519 skb_add_rx_frag(skb
, i
, desc_cb
->priv
, desc_cb
->page_offset
+ pull_len
,
520 size
- pull_len
, truesize
- pull_len
);
522 /* avoid re-using remote pages,flag default unreuse */
523 if (unlikely(page_to_nid(desc_cb
->priv
) != numa_node_id()))
527 /* if we are only owner of page we can reuse it */
528 if (likely(page_count(desc_cb
->priv
) == 1)) {
529 /* flip page offset to other buffer */
530 desc_cb
->page_offset
^= truesize
;
532 desc_cb
->reuse_flag
= 1;
533 /* bump ref count on page before it is given*/
534 get_page(desc_cb
->priv
);
539 /* move offset up to the next cache line */
540 desc_cb
->page_offset
+= truesize
;
542 if (desc_cb
->page_offset
<= last_offset
) {
543 desc_cb
->reuse_flag
= 1;
544 /* bump ref count on page before it is given*/
545 get_page(desc_cb
->priv
);
549 static void get_v2rx_desc_bnum(u32 bnum_flag
, int *out_bnum
)
551 *out_bnum
= hnae_get_field(bnum_flag
,
552 HNS_RXD_BUFNUM_M
, HNS_RXD_BUFNUM_S
) + 1;
555 static void get_rx_desc_bnum(u32 bnum_flag
, int *out_bnum
)
557 *out_bnum
= hnae_get_field(bnum_flag
,
558 HNS_RXD_BUFNUM_M
, HNS_RXD_BUFNUM_S
);
561 static int hns_nic_poll_rx_skb(struct hns_nic_ring_data
*ring_data
,
562 struct sk_buff
**out_skb
, int *out_bnum
)
564 struct hnae_ring
*ring
= ring_data
->ring
;
565 struct net_device
*ndev
= ring_data
->napi
.dev
;
566 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
568 struct hnae_desc
*desc
;
569 struct hnae_desc_cb
*desc_cb
;
576 desc
= &ring
->desc
[ring
->next_to_clean
];
577 desc_cb
= &ring
->desc_cb
[ring
->next_to_clean
];
581 va
= (unsigned char *)desc_cb
->buf
+ desc_cb
->page_offset
;
583 /* prefetch first cache line of first page */
585 #if L1_CACHE_BYTES < 128
586 prefetch(va
+ L1_CACHE_BYTES
);
589 skb
= *out_skb
= napi_alloc_skb(&ring_data
->napi
,
591 if (unlikely(!skb
)) {
592 netdev_err(ndev
, "alloc rx skb fail\n");
593 ring
->stats
.sw_err_cnt
++;
597 prefetchw(skb
->data
);
598 length
= le16_to_cpu(desc
->rx
.pkt_len
);
599 bnum_flag
= le32_to_cpu(desc
->rx
.ipoff_bnum_pid_flag
);
600 priv
->ops
.get_rxd_bnum(bnum_flag
, &bnum
);
603 if (length
<= HNS_RX_HEAD_SIZE
) {
604 memcpy(__skb_put(skb
, length
), va
, ALIGN(length
, sizeof(long)));
606 /* we can reuse buffer as-is, just make sure it is local */
607 if (likely(page_to_nid(desc_cb
->priv
) == numa_node_id()))
608 desc_cb
->reuse_flag
= 1;
609 else /* this page cannot be reused so discard it */
610 put_page(desc_cb
->priv
);
612 ring_ptr_move_fw(ring
, next_to_clean
);
614 if (unlikely(bnum
!= 1)) { /* check err*/
619 ring
->stats
.seg_pkt_cnt
++;
621 pull_len
= hns_nic_get_headlen(va
, bnum_flag
, HNS_RX_HEAD_SIZE
);
622 memcpy(__skb_put(skb
, pull_len
), va
,
623 ALIGN(pull_len
, sizeof(long)));
625 hns_nic_reuse_page(skb
, 0, ring
, pull_len
, desc_cb
);
626 ring_ptr_move_fw(ring
, next_to_clean
);
628 if (unlikely(bnum
>= (int)MAX_SKB_FRAGS
)) { /* check err*/
632 for (i
= 1; i
< bnum
; i
++) {
633 desc
= &ring
->desc
[ring
->next_to_clean
];
634 desc_cb
= &ring
->desc_cb
[ring
->next_to_clean
];
636 hns_nic_reuse_page(skb
, i
, ring
, 0, desc_cb
);
637 ring_ptr_move_fw(ring
, next_to_clean
);
641 /* check except process, free skb and jump the desc */
642 if (unlikely((!bnum
) || (bnum
> ring
->max_desc_num_per_pkt
))) {
644 *out_bnum
= *out_bnum
? *out_bnum
: 1; /* ntc moved,cannot 0*/
645 netdev_err(ndev
, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n",
646 bnum
, ring
->max_desc_num_per_pkt
,
647 length
, (int)MAX_SKB_FRAGS
,
648 ((u64
*)desc
)[0], ((u64
*)desc
)[1]);
649 ring
->stats
.err_bd_num
++;
650 dev_kfree_skb_any(skb
);
654 bnum_flag
= le32_to_cpu(desc
->rx
.ipoff_bnum_pid_flag
);
656 if (unlikely(!hnae_get_bit(bnum_flag
, HNS_RXD_VLD_B
))) {
657 netdev_err(ndev
, "no valid bd,%016llx,%016llx\n",
658 ((u64
*)desc
)[0], ((u64
*)desc
)[1]);
659 ring
->stats
.non_vld_descs
++;
660 dev_kfree_skb_any(skb
);
664 if (unlikely((!desc
->rx
.pkt_len
) ||
665 hnae_get_bit(bnum_flag
, HNS_RXD_DROP_B
))) {
666 ring
->stats
.err_pkt_len
++;
667 dev_kfree_skb_any(skb
);
671 if (unlikely(hnae_get_bit(bnum_flag
, HNS_RXD_L2E_B
))) {
672 ring
->stats
.l2_err
++;
673 dev_kfree_skb_any(skb
);
677 /* filter out multicast pkt with the same src mac as this port */
679 if (unlikely(is_multicast_ether_addr(eh
->h_dest
) &&
680 ether_addr_equal(ndev
->dev_addr
, eh
->h_source
))) {
681 dev_kfree_skb_any(skb
);
685 ring
->stats
.rx_pkts
++;
686 ring
->stats
.rx_bytes
+= skb
->len
;
688 if (unlikely(hnae_get_bit(bnum_flag
, HNS_RXD_L3E_B
) ||
689 hnae_get_bit(bnum_flag
, HNS_RXD_L4E_B
))) {
690 ring
->stats
.l3l4_csum_err
++;
694 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
700 hns_nic_alloc_rx_buffers(struct hns_nic_ring_data
*ring_data
, int cleand_count
)
703 struct hnae_desc_cb res_cbs
;
704 struct hnae_desc_cb
*desc_cb
;
705 struct hnae_ring
*ring
= ring_data
->ring
;
706 struct net_device
*ndev
= ring_data
->napi
.dev
;
708 for (i
= 0; i
< cleand_count
; i
++) {
709 desc_cb
= &ring
->desc_cb
[ring
->next_to_use
];
710 if (desc_cb
->reuse_flag
) {
711 ring
->stats
.reuse_pg_cnt
++;
712 hnae_reuse_buffer(ring
, ring
->next_to_use
);
714 ret
= hnae_reserve_buffer_map(ring
, &res_cbs
);
716 ring
->stats
.sw_err_cnt
++;
717 netdev_err(ndev
, "hnae reserve buffer map failed.\n");
720 hnae_replace_buffer(ring
, ring
->next_to_use
, &res_cbs
);
723 ring_ptr_move_fw(ring
, next_to_use
);
726 wmb(); /* make all data has been write before submit */
727 writel_relaxed(i
, ring
->io_base
+ RCB_REG_HEAD
);
730 /* return error number for error or number of desc left to take
732 static void hns_nic_rx_up_pro(struct hns_nic_ring_data
*ring_data
,
735 struct net_device
*ndev
= ring_data
->napi
.dev
;
737 skb
->protocol
= eth_type_trans(skb
, ndev
);
738 (void)napi_gro_receive(&ring_data
->napi
, skb
);
739 ndev
->last_rx
= jiffies
;
742 static int hns_nic_rx_poll_one(struct hns_nic_ring_data
*ring_data
,
745 struct hnae_ring
*ring
= ring_data
->ring
;
747 int num
, bnum
, ex_num
;
748 #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
749 int recv_pkts
, recv_bds
, clean_count
, err
;
751 num
= readl_relaxed(ring
->io_base
+ RCB_REG_FBDNUM
);
752 rmb(); /* make sure num taken effect before the other data is touched */
754 recv_pkts
= 0, recv_bds
= 0, clean_count
= 0;
756 while (recv_pkts
< budget
&& recv_bds
< num
) {
757 /* reuse or realloc buffers*/
758 if (clean_count
>= RCB_NOF_ALLOC_RX_BUFF_ONCE
) {
759 hns_nic_alloc_rx_buffers(ring_data
, clean_count
);
764 err
= hns_nic_poll_rx_skb(ring_data
, &skb
, &bnum
);
765 if (unlikely(!skb
)) /* this fault cannot be repaired */
770 if (unlikely(err
)) { /* do jump the err */
775 /* do update ip stack process*/
776 ((void (*)(struct hns_nic_ring_data
*, struct sk_buff
*))v
)(
781 /* make all data has been write before submit */
782 if (recv_pkts
< budget
) {
783 ex_num
= readl_relaxed(ring
->io_base
+ RCB_REG_FBDNUM
);
785 if (ex_num
> clean_count
) {
786 num
+= ex_num
- clean_count
;
787 rmb(); /*complete read rx ring bd number*/
792 /* make all data has been write before submit */
794 hns_nic_alloc_rx_buffers(ring_data
, clean_count
);
799 static void hns_nic_rx_fini_pro(struct hns_nic_ring_data
*ring_data
)
801 struct hnae_ring
*ring
= ring_data
->ring
;
804 /* for hardware bug fixed */
805 num
= readl_relaxed(ring
->io_base
+ RCB_REG_FBDNUM
);
808 ring_data
->ring
->q
->handle
->dev
->ops
->toggle_ring_irq(
811 napi_schedule(&ring_data
->napi
);
815 static inline void hns_nic_reclaim_one_desc(struct hnae_ring
*ring
,
816 int *bytes
, int *pkts
)
818 struct hnae_desc_cb
*desc_cb
= &ring
->desc_cb
[ring
->next_to_clean
];
820 (*pkts
) += (desc_cb
->type
== DESC_TYPE_SKB
);
821 (*bytes
) += desc_cb
->length
;
822 /* desc_cb will be cleaned, after hnae_free_buffer_detach*/
823 hnae_free_buffer_detach(ring
, ring
->next_to_clean
);
825 ring_ptr_move_fw(ring
, next_to_clean
);
828 static int is_valid_clean_head(struct hnae_ring
*ring
, int h
)
830 int u
= ring
->next_to_use
;
831 int c
= ring
->next_to_clean
;
833 if (unlikely(h
> ring
->desc_num
))
836 assert(u
> 0 && u
< ring
->desc_num
);
837 assert(c
> 0 && c
< ring
->desc_num
);
838 assert(u
!= c
&& h
!= c
); /* must be checked before call this func */
840 return u
> c
? (h
> c
&& h
<= u
) : (h
> c
|| h
<= u
);
843 /* netif_tx_lock will turn down the performance, set only when necessary */
844 #ifdef CONFIG_NET_POLL_CONTROLLER
845 #define NETIF_TX_LOCK(ndev) netif_tx_lock(ndev)
846 #define NETIF_TX_UNLOCK(ndev) netif_tx_unlock(ndev)
848 #define NETIF_TX_LOCK(ndev)
849 #define NETIF_TX_UNLOCK(ndev)
851 /* reclaim all desc in one budget
852 * return error or number of desc left
854 static int hns_nic_tx_poll_one(struct hns_nic_ring_data
*ring_data
,
857 struct hnae_ring
*ring
= ring_data
->ring
;
858 struct net_device
*ndev
= ring_data
->napi
.dev
;
859 struct netdev_queue
*dev_queue
;
860 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
866 head
= readl_relaxed(ring
->io_base
+ RCB_REG_HEAD
);
867 rmb(); /* make sure head is ready before touch any data */
869 if (is_ring_empty(ring
) || head
== ring
->next_to_clean
) {
870 NETIF_TX_UNLOCK(ndev
);
871 return 0; /* no data to poll */
874 if (!is_valid_clean_head(ring
, head
)) {
875 netdev_err(ndev
, "wrong head (%d, %d-%d)\n", head
,
876 ring
->next_to_use
, ring
->next_to_clean
);
877 ring
->stats
.io_err_cnt
++;
878 NETIF_TX_UNLOCK(ndev
);
884 while (head
!= ring
->next_to_clean
) {
885 hns_nic_reclaim_one_desc(ring
, &bytes
, &pkts
);
886 /* issue prefetch for next Tx descriptor */
887 prefetch(&ring
->desc_cb
[ring
->next_to_clean
]);
890 NETIF_TX_UNLOCK(ndev
);
892 dev_queue
= netdev_get_tx_queue(ndev
, ring_data
->queue_index
);
893 netdev_tx_completed_queue(dev_queue
, pkts
, bytes
);
895 if (unlikely(priv
->link
&& !netif_carrier_ok(ndev
)))
896 netif_carrier_on(ndev
);
898 if (unlikely(pkts
&& netif_carrier_ok(ndev
) &&
899 (ring_space(ring
) >= ring
->max_desc_num_per_pkt
* 2))) {
900 /* Make sure that anybody stopping the queue after this
901 * sees the new next_to_clean.
904 if (netif_tx_queue_stopped(dev_queue
) &&
905 !test_bit(NIC_STATE_DOWN
, &priv
->state
)) {
906 netif_tx_wake_queue(dev_queue
);
907 ring
->stats
.restart_queue
++;
913 static void hns_nic_tx_fini_pro(struct hns_nic_ring_data
*ring_data
)
915 struct hnae_ring
*ring
= ring_data
->ring
;
916 int head
= readl_relaxed(ring
->io_base
+ RCB_REG_HEAD
);
918 if (head
!= ring
->next_to_clean
) {
919 ring_data
->ring
->q
->handle
->dev
->ops
->toggle_ring_irq(
922 napi_schedule(&ring_data
->napi
);
926 static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data
*ring_data
)
928 struct hnae_ring
*ring
= ring_data
->ring
;
929 struct net_device
*ndev
= ring_data
->napi
.dev
;
930 struct netdev_queue
*dev_queue
;
936 head
= ring
->next_to_use
; /* ntu :soft setted ring position*/
939 while (head
!= ring
->next_to_clean
)
940 hns_nic_reclaim_one_desc(ring
, &bytes
, &pkts
);
942 NETIF_TX_UNLOCK(ndev
);
944 dev_queue
= netdev_get_tx_queue(ndev
, ring_data
->queue_index
);
945 netdev_tx_reset_queue(dev_queue
);
948 static int hns_nic_common_poll(struct napi_struct
*napi
, int budget
)
950 struct hns_nic_ring_data
*ring_data
=
951 container_of(napi
, struct hns_nic_ring_data
, napi
);
952 int clean_complete
= ring_data
->poll_one(
953 ring_data
, budget
, ring_data
->ex_process
);
955 if (clean_complete
>= 0 && clean_complete
< budget
) {
957 ring_data
->ring
->q
->handle
->dev
->ops
->toggle_ring_irq(
959 if (ring_data
->fini_process
)
960 ring_data
->fini_process(ring_data
);
964 return clean_complete
;
967 static irqreturn_t
hns_irq_handle(int irq
, void *dev
)
969 struct hns_nic_ring_data
*ring_data
= (struct hns_nic_ring_data
*)dev
;
971 ring_data
->ring
->q
->handle
->dev
->ops
->toggle_ring_irq(
973 napi_schedule(&ring_data
->napi
);
979 *hns_nic_adjust_link - adjust net work mode by the phy stat or new param
982 static void hns_nic_adjust_link(struct net_device
*ndev
)
984 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
985 struct hnae_handle
*h
= priv
->ae_handle
;
987 h
->dev
->ops
->adjust_link(h
, ndev
->phydev
->speed
, ndev
->phydev
->duplex
);
991 *hns_nic_init_phy - init phy
994 * Return 0 on success, negative on failure
996 int hns_nic_init_phy(struct net_device
*ndev
, struct hnae_handle
*h
)
998 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
999 struct phy_device
*phy_dev
= NULL
;
1004 if (h
->phy_if
!= PHY_INTERFACE_MODE_XGMII
)
1005 phy_dev
= of_phy_connect(ndev
, h
->phy_node
,
1006 hns_nic_adjust_link
, 0, h
->phy_if
);
1008 phy_dev
= of_phy_attach(ndev
, h
->phy_node
, 0, h
->phy_if
);
1010 if (unlikely(!phy_dev
) || IS_ERR(phy_dev
))
1011 return !phy_dev
? -ENODEV
: PTR_ERR(phy_dev
);
1013 phy_dev
->supported
&= h
->if_support
;
1014 phy_dev
->advertising
= phy_dev
->supported
;
1016 if (h
->phy_if
== PHY_INTERFACE_MODE_XGMII
)
1017 phy_dev
->autoneg
= false;
1019 priv
->phy
= phy_dev
;
1024 static int hns_nic_ring_open(struct net_device
*netdev
, int idx
)
1026 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1027 struct hnae_handle
*h
= priv
->ae_handle
;
1029 napi_enable(&priv
->ring_data
[idx
].napi
);
1031 enable_irq(priv
->ring_data
[idx
].ring
->irq
);
1032 h
->dev
->ops
->toggle_ring_irq(priv
->ring_data
[idx
].ring
, 0);
1037 static int hns_nic_net_set_mac_address(struct net_device
*ndev
, void *p
)
1039 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1040 struct hnae_handle
*h
= priv
->ae_handle
;
1041 struct sockaddr
*mac_addr
= p
;
1044 if (!mac_addr
|| !is_valid_ether_addr((const u8
*)mac_addr
->sa_data
))
1045 return -EADDRNOTAVAIL
;
1047 ret
= h
->dev
->ops
->set_mac_addr(h
, mac_addr
->sa_data
);
1049 netdev_err(ndev
, "set_mac_address fail, ret=%d!\n", ret
);
1053 memcpy(ndev
->dev_addr
, mac_addr
->sa_data
, ndev
->addr_len
);
1058 void hns_nic_update_stats(struct net_device
*netdev
)
1060 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1061 struct hnae_handle
*h
= priv
->ae_handle
;
1063 h
->dev
->ops
->update_stats(h
, &netdev
->stats
);
1066 /* set mac addr if it is configed. or leave it to the AE driver */
1067 static void hns_init_mac_addr(struct net_device
*ndev
)
1069 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1070 struct device_node
*node
= priv
->dev
->of_node
;
1071 const void *mac_addr_temp
;
1073 mac_addr_temp
= of_get_mac_address(node
);
1074 if (mac_addr_temp
&& is_valid_ether_addr(mac_addr_temp
)) {
1075 memcpy(ndev
->dev_addr
, mac_addr_temp
, ndev
->addr_len
);
1077 eth_hw_addr_random(ndev
);
1078 dev_warn(priv
->dev
, "No valid mac, use random mac %pM",
1083 static void hns_nic_ring_close(struct net_device
*netdev
, int idx
)
1085 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1086 struct hnae_handle
*h
= priv
->ae_handle
;
1088 h
->dev
->ops
->toggle_ring_irq(priv
->ring_data
[idx
].ring
, 1);
1089 disable_irq(priv
->ring_data
[idx
].ring
->irq
);
1091 napi_disable(&priv
->ring_data
[idx
].napi
);
1094 static void hns_set_irq_affinity(struct hns_nic_priv
*priv
)
1096 struct hnae_handle
*h
= priv
->ae_handle
;
1097 struct hns_nic_ring_data
*rd
;
1102 /*diffrent irq banlance for 16core and 32core*/
1103 if (h
->q_num
== num_possible_cpus()) {
1104 for (i
= 0; i
< h
->q_num
* 2; i
++) {
1105 rd
= &priv
->ring_data
[i
];
1106 if (cpu_online(rd
->queue_index
)) {
1107 cpumask_clear(&mask
);
1108 cpu
= rd
->queue_index
;
1109 cpumask_set_cpu(cpu
, &mask
);
1110 (void)irq_set_affinity_hint(rd
->ring
->irq
,
1115 for (i
= 0; i
< h
->q_num
; i
++) {
1116 rd
= &priv
->ring_data
[i
];
1117 if (cpu_online(rd
->queue_index
* 2)) {
1118 cpumask_clear(&mask
);
1119 cpu
= rd
->queue_index
* 2;
1120 cpumask_set_cpu(cpu
, &mask
);
1121 (void)irq_set_affinity_hint(rd
->ring
->irq
,
1126 for (i
= h
->q_num
; i
< h
->q_num
* 2; i
++) {
1127 rd
= &priv
->ring_data
[i
];
1128 if (cpu_online(rd
->queue_index
* 2 + 1)) {
1129 cpumask_clear(&mask
);
1130 cpu
= rd
->queue_index
* 2 + 1;
1131 cpumask_set_cpu(cpu
, &mask
);
1132 (void)irq_set_affinity_hint(rd
->ring
->irq
,
1139 static int hns_nic_init_irq(struct hns_nic_priv
*priv
)
1141 struct hnae_handle
*h
= priv
->ae_handle
;
1142 struct hns_nic_ring_data
*rd
;
1146 for (i
= 0; i
< h
->q_num
* 2; i
++) {
1147 rd
= &priv
->ring_data
[i
];
1149 if (rd
->ring
->irq_init_flag
== RCB_IRQ_INITED
)
1152 snprintf(rd
->ring
->ring_name
, RCB_RING_NAME_LEN
,
1153 "%s-%s%d", priv
->netdev
->name
,
1154 (i
< h
->q_num
? "tx" : "rx"), rd
->queue_index
);
1156 rd
->ring
->ring_name
[RCB_RING_NAME_LEN
- 1] = '\0';
1158 ret
= request_irq(rd
->ring
->irq
,
1159 hns_irq_handle
, 0, rd
->ring
->ring_name
, rd
);
1161 netdev_err(priv
->netdev
, "request irq(%d) fail\n",
1165 disable_irq(rd
->ring
->irq
);
1166 rd
->ring
->irq_init_flag
= RCB_IRQ_INITED
;
1169 /*set cpu affinity*/
1170 hns_set_irq_affinity(priv
);
1175 static int hns_nic_net_up(struct net_device
*ndev
)
1177 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1178 struct hnae_handle
*h
= priv
->ae_handle
;
1182 ret
= hns_nic_init_irq(priv
);
1184 netdev_err(ndev
, "hns init irq failed! ret=%d\n", ret
);
1188 for (i
= 0; i
< h
->q_num
* 2; i
++) {
1189 ret
= hns_nic_ring_open(ndev
, i
);
1191 goto out_has_some_queues
;
1194 for (k
= 0; k
< h
->q_num
; k
++)
1195 h
->dev
->ops
->toggle_queue_status(h
->qs
[k
], 1);
1197 ret
= h
->dev
->ops
->set_mac_addr(h
, ndev
->dev_addr
);
1199 goto out_set_mac_addr_err
;
1201 ret
= h
->dev
->ops
->start
? h
->dev
->ops
->start(h
) : 0;
1206 phy_start(priv
->phy
);
1208 clear_bit(NIC_STATE_DOWN
, &priv
->state
);
1209 (void)mod_timer(&priv
->service_timer
, jiffies
+ SERVICE_TIMER_HZ
);
1214 netif_stop_queue(ndev
);
1215 out_set_mac_addr_err
:
1216 for (k
= 0; k
< h
->q_num
; k
++)
1217 h
->dev
->ops
->toggle_queue_status(h
->qs
[k
], 0);
1218 out_has_some_queues
:
1219 for (j
= i
- 1; j
>= 0; j
--)
1220 hns_nic_ring_close(ndev
, j
);
1222 set_bit(NIC_STATE_DOWN
, &priv
->state
);
1227 static void hns_nic_net_down(struct net_device
*ndev
)
1230 struct hnae_ae_ops
*ops
;
1231 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1233 if (test_and_set_bit(NIC_STATE_DOWN
, &priv
->state
))
1236 (void)del_timer_sync(&priv
->service_timer
);
1237 netif_tx_stop_all_queues(ndev
);
1238 netif_carrier_off(ndev
);
1239 netif_tx_disable(ndev
);
1243 phy_stop(priv
->phy
);
1245 ops
= priv
->ae_handle
->dev
->ops
;
1248 ops
->stop(priv
->ae_handle
);
1250 netif_tx_stop_all_queues(ndev
);
1252 for (i
= priv
->ae_handle
->q_num
- 1; i
>= 0; i
--) {
1253 hns_nic_ring_close(ndev
, i
);
1254 hns_nic_ring_close(ndev
, i
+ priv
->ae_handle
->q_num
);
1256 /* clean tx buffers*/
1257 hns_nic_tx_clr_all_bufs(priv
->ring_data
+ i
);
1261 void hns_nic_net_reset(struct net_device
*ndev
)
1263 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1264 struct hnae_handle
*handle
= priv
->ae_handle
;
1266 while (test_and_set_bit(NIC_STATE_RESETTING
, &priv
->state
))
1267 usleep_range(1000, 2000);
1269 (void)hnae_reinit_handle(handle
);
1271 clear_bit(NIC_STATE_RESETTING
, &priv
->state
);
1274 void hns_nic_net_reinit(struct net_device
*netdev
)
1276 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1278 priv
->netdev
->trans_start
= jiffies
;
1279 while (test_and_set_bit(NIC_STATE_REINITING
, &priv
->state
))
1280 usleep_range(1000, 2000);
1282 hns_nic_net_down(netdev
);
1283 hns_nic_net_reset(netdev
);
1284 (void)hns_nic_net_up(netdev
);
1285 clear_bit(NIC_STATE_REINITING
, &priv
->state
);
1288 static int hns_nic_net_open(struct net_device
*ndev
)
1290 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1291 struct hnae_handle
*h
= priv
->ae_handle
;
1294 if (test_bit(NIC_STATE_TESTING
, &priv
->state
))
1298 netif_carrier_off(ndev
);
1300 ret
= netif_set_real_num_tx_queues(ndev
, h
->q_num
);
1302 netdev_err(ndev
, "netif_set_real_num_tx_queues fail, ret=%d!\n",
1307 ret
= netif_set_real_num_rx_queues(ndev
, h
->q_num
);
1310 "netif_set_real_num_rx_queues fail, ret=%d!\n", ret
);
1314 ret
= hns_nic_net_up(ndev
);
1317 "hns net up fail, ret=%d!\n", ret
);
1324 static int hns_nic_net_stop(struct net_device
*ndev
)
1326 hns_nic_net_down(ndev
);
1331 static void hns_tx_timeout_reset(struct hns_nic_priv
*priv
);
1332 static void hns_nic_net_timeout(struct net_device
*ndev
)
1334 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1336 hns_tx_timeout_reset(priv
);
1339 static int hns_nic_do_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
1342 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1343 struct phy_device
*phy_dev
= priv
->phy
;
1345 if (!netif_running(netdev
))
1351 return phy_mii_ioctl(phy_dev
, ifr
, cmd
);
1354 /* use only for netconsole to poll with the device without interrupt */
1355 #ifdef CONFIG_NET_POLL_CONTROLLER
1356 void hns_nic_poll_controller(struct net_device
*ndev
)
1358 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1359 unsigned long flags
;
1362 local_irq_save(flags
);
1363 for (i
= 0; i
< priv
->ae_handle
->q_num
* 2; i
++)
1364 napi_schedule(&priv
->ring_data
[i
].napi
);
1365 local_irq_restore(flags
);
1369 static netdev_tx_t
hns_nic_net_xmit(struct sk_buff
*skb
,
1370 struct net_device
*ndev
)
1372 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1375 assert(skb
->queue_mapping
< ndev
->ae_handle
->q_num
);
1376 ret
= hns_nic_net_xmit_hw(ndev
, skb
,
1377 &tx_ring_data(priv
, skb
->queue_mapping
));
1378 if (ret
== NETDEV_TX_OK
) {
1379 ndev
->trans_start
= jiffies
;
1380 ndev
->stats
.tx_bytes
+= skb
->len
;
1381 ndev
->stats
.tx_packets
++;
1383 return (netdev_tx_t
)ret
;
1386 static int hns_nic_change_mtu(struct net_device
*ndev
, int new_mtu
)
1388 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1389 struct hnae_handle
*h
= priv
->ae_handle
;
1392 /* MTU < 68 is an error and causes problems on some kernels */
1396 if (!h
->dev
->ops
->set_mtu
)
1399 if (netif_running(ndev
)) {
1400 (void)hns_nic_net_stop(ndev
);
1403 ret
= h
->dev
->ops
->set_mtu(h
, new_mtu
);
1405 netdev_err(ndev
, "set mtu fail, return value %d\n",
1408 if (hns_nic_net_open(ndev
))
1409 netdev_err(ndev
, "hns net open fail\n");
1411 ret
= h
->dev
->ops
->set_mtu(h
, new_mtu
);
1415 ndev
->mtu
= new_mtu
;
1420 static int hns_nic_set_features(struct net_device
*netdev
,
1421 netdev_features_t features
)
1423 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1424 struct hnae_handle
*h
= priv
->ae_handle
;
1426 switch (priv
->enet_ver
) {
1428 if (features
& (NETIF_F_TSO
| NETIF_F_TSO6
))
1429 netdev_info(netdev
, "enet v1 do not support tso!\n");
1432 if (features
& (NETIF_F_TSO
| NETIF_F_TSO6
)) {
1433 priv
->ops
.fill_desc
= fill_tso_desc
;
1434 priv
->ops
.maybe_stop_tx
= hns_nic_maybe_stop_tso
;
1435 /* The chip only support 7*4096 */
1436 netif_set_gso_max_size(netdev
, 7 * 4096);
1437 h
->dev
->ops
->set_tso_stats(h
, 1);
1439 priv
->ops
.fill_desc
= fill_v2_desc
;
1440 priv
->ops
.maybe_stop_tx
= hns_nic_maybe_stop_tx
;
1441 h
->dev
->ops
->set_tso_stats(h
, 0);
1445 netdev
->features
= features
;
1449 static netdev_features_t
hns_nic_fix_features(
1450 struct net_device
*netdev
, netdev_features_t features
)
1452 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1454 switch (priv
->enet_ver
) {
1456 features
&= ~(NETIF_F_TSO
| NETIF_F_TSO6
|
1457 NETIF_F_HW_VLAN_CTAG_FILTER
);
1466 * nic_set_multicast_list - set mutl mac address
1467 * @netdev: net device
1472 void hns_set_multicast_list(struct net_device
*ndev
)
1474 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1475 struct hnae_handle
*h
= priv
->ae_handle
;
1476 struct netdev_hw_addr
*ha
= NULL
;
1479 netdev_err(ndev
, "hnae handle is null\n");
1483 if (h
->dev
->ops
->set_mc_addr
) {
1484 netdev_for_each_mc_addr(ha
, ndev
)
1485 if (h
->dev
->ops
->set_mc_addr(h
, ha
->addr
))
1486 netdev_err(ndev
, "set multicast fail\n");
1490 void hns_nic_set_rx_mode(struct net_device
*ndev
)
1492 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1493 struct hnae_handle
*h
= priv
->ae_handle
;
1495 if (h
->dev
->ops
->set_promisc_mode
) {
1496 if (ndev
->flags
& IFF_PROMISC
)
1497 h
->dev
->ops
->set_promisc_mode(h
, 1);
1499 h
->dev
->ops
->set_promisc_mode(h
, 0);
1502 hns_set_multicast_list(ndev
);
1505 struct rtnl_link_stats64
*hns_nic_get_stats64(struct net_device
*ndev
,
1506 struct rtnl_link_stats64
*stats
)
1513 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1514 struct hnae_handle
*h
= priv
->ae_handle
;
1516 for (idx
= 0; idx
< h
->q_num
; idx
++) {
1517 tx_bytes
+= h
->qs
[idx
]->tx_ring
.stats
.tx_bytes
;
1518 tx_pkts
+= h
->qs
[idx
]->tx_ring
.stats
.tx_pkts
;
1519 rx_bytes
+= h
->qs
[idx
]->rx_ring
.stats
.rx_bytes
;
1520 rx_pkts
+= h
->qs
[idx
]->rx_ring
.stats
.rx_pkts
;
1523 stats
->tx_bytes
= tx_bytes
;
1524 stats
->tx_packets
= tx_pkts
;
1525 stats
->rx_bytes
= rx_bytes
;
1526 stats
->rx_packets
= rx_pkts
;
1528 stats
->rx_errors
= ndev
->stats
.rx_errors
;
1529 stats
->multicast
= ndev
->stats
.multicast
;
1530 stats
->rx_length_errors
= ndev
->stats
.rx_length_errors
;
1531 stats
->rx_crc_errors
= ndev
->stats
.rx_crc_errors
;
1532 stats
->rx_missed_errors
= ndev
->stats
.rx_missed_errors
;
1534 stats
->tx_errors
= ndev
->stats
.tx_errors
;
1535 stats
->rx_dropped
= ndev
->stats
.rx_dropped
;
1536 stats
->tx_dropped
= ndev
->stats
.tx_dropped
;
1537 stats
->collisions
= ndev
->stats
.collisions
;
1538 stats
->rx_over_errors
= ndev
->stats
.rx_over_errors
;
1539 stats
->rx_frame_errors
= ndev
->stats
.rx_frame_errors
;
1540 stats
->rx_fifo_errors
= ndev
->stats
.rx_fifo_errors
;
1541 stats
->tx_aborted_errors
= ndev
->stats
.tx_aborted_errors
;
1542 stats
->tx_carrier_errors
= ndev
->stats
.tx_carrier_errors
;
1543 stats
->tx_fifo_errors
= ndev
->stats
.tx_fifo_errors
;
1544 stats
->tx_heartbeat_errors
= ndev
->stats
.tx_heartbeat_errors
;
1545 stats
->tx_window_errors
= ndev
->stats
.tx_window_errors
;
1546 stats
->rx_compressed
= ndev
->stats
.rx_compressed
;
1547 stats
->tx_compressed
= ndev
->stats
.tx_compressed
;
1552 static const struct net_device_ops hns_nic_netdev_ops
= {
1553 .ndo_open
= hns_nic_net_open
,
1554 .ndo_stop
= hns_nic_net_stop
,
1555 .ndo_start_xmit
= hns_nic_net_xmit
,
1556 .ndo_tx_timeout
= hns_nic_net_timeout
,
1557 .ndo_set_mac_address
= hns_nic_net_set_mac_address
,
1558 .ndo_change_mtu
= hns_nic_change_mtu
,
1559 .ndo_do_ioctl
= hns_nic_do_ioctl
,
1560 .ndo_set_features
= hns_nic_set_features
,
1561 .ndo_fix_features
= hns_nic_fix_features
,
1562 .ndo_get_stats64
= hns_nic_get_stats64
,
1563 #ifdef CONFIG_NET_POLL_CONTROLLER
1564 .ndo_poll_controller
= hns_nic_poll_controller
,
1566 .ndo_set_rx_mode
= hns_nic_set_rx_mode
,
1569 static void hns_nic_update_link_status(struct net_device
*netdev
)
1571 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1573 struct hnae_handle
*h
= priv
->ae_handle
;
1577 if (!genphy_update_link(priv
->phy
))
1578 state
= priv
->phy
->link
;
1582 state
= state
&& h
->dev
->ops
->get_status(h
);
1584 if (state
!= priv
->link
) {
1586 netif_carrier_on(netdev
);
1587 netif_tx_wake_all_queues(netdev
);
1588 netdev_info(netdev
, "link up\n");
1590 netif_carrier_off(netdev
);
1591 netdev_info(netdev
, "link down\n");
1597 /* for dumping key regs*/
1598 static void hns_nic_dump(struct hns_nic_priv
*priv
)
1600 struct hnae_handle
*h
= priv
->ae_handle
;
1601 struct hnae_ae_ops
*ops
= h
->dev
->ops
;
1602 u32
*data
, reg_num
, i
;
1604 if (ops
->get_regs_len
&& ops
->get_regs
) {
1605 reg_num
= ops
->get_regs_len(priv
->ae_handle
);
1606 reg_num
= (reg_num
+ 3ul) & ~3ul;
1607 data
= kcalloc(reg_num
, sizeof(u32
), GFP_KERNEL
);
1609 ops
->get_regs(priv
->ae_handle
, data
);
1610 for (i
= 0; i
< reg_num
; i
+= 4)
1611 pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
1612 i
, data
[i
], data
[i
+ 1],
1613 data
[i
+ 2], data
[i
+ 3]);
1618 for (i
= 0; i
< h
->q_num
; i
++) {
1619 pr_info("tx_queue%d_next_to_clean:%d\n",
1620 i
, h
->qs
[i
]->tx_ring
.next_to_clean
);
1621 pr_info("tx_queue%d_next_to_use:%d\n",
1622 i
, h
->qs
[i
]->tx_ring
.next_to_use
);
1623 pr_info("rx_queue%d_next_to_clean:%d\n",
1624 i
, h
->qs
[i
]->rx_ring
.next_to_clean
);
1625 pr_info("rx_queue%d_next_to_use:%d\n",
1626 i
, h
->qs
[i
]->rx_ring
.next_to_use
);
1630 /* for resetting suntask*/
1631 static void hns_nic_reset_subtask(struct hns_nic_priv
*priv
)
1633 enum hnae_port_type type
= priv
->ae_handle
->port_type
;
1635 if (!test_bit(NIC_STATE2_RESET_REQUESTED
, &priv
->state
))
1637 clear_bit(NIC_STATE2_RESET_REQUESTED
, &priv
->state
);
1639 /* If we're already down, removing or resetting, just bail */
1640 if (test_bit(NIC_STATE_DOWN
, &priv
->state
) ||
1641 test_bit(NIC_STATE_REMOVING
, &priv
->state
) ||
1642 test_bit(NIC_STATE_RESETTING
, &priv
->state
))
1646 netdev_info(priv
->netdev
, "try to reset %s port!\n",
1647 (type
== HNAE_PORT_DEBUG
? "debug" : "service"));
1650 /* put off any impending NetWatchDogTimeout */
1651 priv
->netdev
->trans_start
= jiffies
;
1653 if (type
== HNAE_PORT_DEBUG
) {
1654 hns_nic_net_reinit(priv
->netdev
);
1656 netif_carrier_off(priv
->netdev
);
1657 netif_tx_disable(priv
->netdev
);
1662 /* for doing service complete*/
1663 static void hns_nic_service_event_complete(struct hns_nic_priv
*priv
)
1665 WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED
, &priv
->state
));
1667 smp_mb__before_atomic();
1668 clear_bit(NIC_STATE_SERVICE_SCHED
, &priv
->state
);
1671 static void hns_nic_service_task(struct work_struct
*work
)
1673 struct hns_nic_priv
*priv
1674 = container_of(work
, struct hns_nic_priv
, service_task
);
1675 struct hnae_handle
*h
= priv
->ae_handle
;
1677 hns_nic_update_link_status(priv
->netdev
);
1678 h
->dev
->ops
->update_led_status(h
);
1679 hns_nic_update_stats(priv
->netdev
);
1681 hns_nic_reset_subtask(priv
);
1682 hns_nic_service_event_complete(priv
);
1685 static void hns_nic_task_schedule(struct hns_nic_priv
*priv
)
1687 if (!test_bit(NIC_STATE_DOWN
, &priv
->state
) &&
1688 !test_bit(NIC_STATE_REMOVING
, &priv
->state
) &&
1689 !test_and_set_bit(NIC_STATE_SERVICE_SCHED
, &priv
->state
))
1690 (void)schedule_work(&priv
->service_task
);
1693 static void hns_nic_service_timer(unsigned long data
)
1695 struct hns_nic_priv
*priv
= (struct hns_nic_priv
*)data
;
1697 (void)mod_timer(&priv
->service_timer
, jiffies
+ SERVICE_TIMER_HZ
);
1699 hns_nic_task_schedule(priv
);
1703 * hns_tx_timeout_reset - initiate reset due to Tx timeout
1704 * @priv: driver private struct
1706 static void hns_tx_timeout_reset(struct hns_nic_priv
*priv
)
1708 /* Do the reset outside of interrupt context */
1709 if (!test_bit(NIC_STATE_DOWN
, &priv
->state
)) {
1710 set_bit(NIC_STATE2_RESET_REQUESTED
, &priv
->state
);
1711 netdev_warn(priv
->netdev
,
1712 "initiating reset due to tx timeout(%llu,0x%lx)\n",
1713 priv
->tx_timeout_count
, priv
->state
);
1714 priv
->tx_timeout_count
++;
1715 hns_nic_task_schedule(priv
);
1719 static int hns_nic_init_ring_data(struct hns_nic_priv
*priv
)
1721 struct hnae_handle
*h
= priv
->ae_handle
;
1722 struct hns_nic_ring_data
*rd
;
1723 bool is_ver1
= AE_IS_VER1(priv
->enet_ver
);
1726 if (h
->q_num
> NIC_MAX_Q_PER_VF
) {
1727 netdev_err(priv
->netdev
, "too much queue (%d)\n", h
->q_num
);
1731 priv
->ring_data
= kzalloc(h
->q_num
* sizeof(*priv
->ring_data
) * 2,
1733 if (!priv
->ring_data
)
1736 for (i
= 0; i
< h
->q_num
; i
++) {
1737 rd
= &priv
->ring_data
[i
];
1738 rd
->queue_index
= i
;
1739 rd
->ring
= &h
->qs
[i
]->tx_ring
;
1740 rd
->poll_one
= hns_nic_tx_poll_one
;
1741 rd
->fini_process
= is_ver1
? hns_nic_tx_fini_pro
: NULL
;
1743 netif_napi_add(priv
->netdev
, &rd
->napi
,
1744 hns_nic_common_poll
, NIC_TX_CLEAN_MAX_NUM
);
1745 rd
->ring
->irq_init_flag
= RCB_IRQ_NOT_INITED
;
1747 for (i
= h
->q_num
; i
< h
->q_num
* 2; i
++) {
1748 rd
= &priv
->ring_data
[i
];
1749 rd
->queue_index
= i
- h
->q_num
;
1750 rd
->ring
= &h
->qs
[i
- h
->q_num
]->rx_ring
;
1751 rd
->poll_one
= hns_nic_rx_poll_one
;
1752 rd
->ex_process
= hns_nic_rx_up_pro
;
1753 rd
->fini_process
= is_ver1
? hns_nic_rx_fini_pro
: NULL
;
1755 netif_napi_add(priv
->netdev
, &rd
->napi
,
1756 hns_nic_common_poll
, NIC_RX_CLEAN_MAX_NUM
);
1757 rd
->ring
->irq_init_flag
= RCB_IRQ_NOT_INITED
;
1763 static void hns_nic_uninit_ring_data(struct hns_nic_priv
*priv
)
1765 struct hnae_handle
*h
= priv
->ae_handle
;
1768 for (i
= 0; i
< h
->q_num
* 2; i
++) {
1769 netif_napi_del(&priv
->ring_data
[i
].napi
);
1770 if (priv
->ring_data
[i
].ring
->irq_init_flag
== RCB_IRQ_INITED
) {
1771 (void)irq_set_affinity_hint(
1772 priv
->ring_data
[i
].ring
->irq
,
1774 free_irq(priv
->ring_data
[i
].ring
->irq
,
1775 &priv
->ring_data
[i
]);
1778 priv
->ring_data
[i
].ring
->irq_init_flag
= RCB_IRQ_NOT_INITED
;
1780 kfree(priv
->ring_data
);
1783 static void hns_nic_set_priv_ops(struct net_device
*netdev
)
1785 struct hns_nic_priv
*priv
= netdev_priv(netdev
);
1786 struct hnae_handle
*h
= priv
->ae_handle
;
1788 if (AE_IS_VER1(priv
->enet_ver
)) {
1789 priv
->ops
.fill_desc
= fill_desc
;
1790 priv
->ops
.get_rxd_bnum
= get_rx_desc_bnum
;
1791 priv
->ops
.maybe_stop_tx
= hns_nic_maybe_stop_tx
;
1793 priv
->ops
.get_rxd_bnum
= get_v2rx_desc_bnum
;
1794 if ((netdev
->features
& NETIF_F_TSO
) ||
1795 (netdev
->features
& NETIF_F_TSO6
)) {
1796 priv
->ops
.fill_desc
= fill_tso_desc
;
1797 priv
->ops
.maybe_stop_tx
= hns_nic_maybe_stop_tso
;
1798 /* This chip only support 7*4096 */
1799 netif_set_gso_max_size(netdev
, 7 * 4096);
1800 h
->dev
->ops
->set_tso_stats(h
, 1);
1802 priv
->ops
.fill_desc
= fill_v2_desc
;
1803 priv
->ops
.maybe_stop_tx
= hns_nic_maybe_stop_tx
;
1808 static int hns_nic_try_get_ae(struct net_device
*ndev
)
1810 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1811 struct hnae_handle
*h
;
1814 h
= hnae_get_handle(&priv
->netdev
->dev
,
1815 priv
->ae_node
, priv
->port_id
, NULL
);
1816 if (IS_ERR_OR_NULL(h
)) {
1818 dev_dbg(priv
->dev
, "has not handle, register notifier!\n");
1821 priv
->ae_handle
= h
;
1823 ret
= hns_nic_init_phy(ndev
, h
);
1825 dev_err(priv
->dev
, "probe phy device fail!\n");
1829 ret
= hns_nic_init_ring_data(priv
);
1832 goto out_init_ring_data
;
1835 hns_nic_set_priv_ops(ndev
);
1837 ret
= register_netdev(ndev
);
1839 dev_err(priv
->dev
, "probe register netdev fail!\n");
1840 goto out_reg_ndev_fail
;
1845 hns_nic_uninit_ring_data(priv
);
1846 priv
->ring_data
= NULL
;
1849 hnae_put_handle(priv
->ae_handle
);
1850 priv
->ae_handle
= NULL
;
1855 static int hns_nic_notifier_action(struct notifier_block
*nb
,
1856 unsigned long action
, void *data
)
1858 struct hns_nic_priv
*priv
=
1859 container_of(nb
, struct hns_nic_priv
, notifier_block
);
1861 assert(action
== HNAE_AE_REGISTER
);
1863 if (!hns_nic_try_get_ae(priv
->netdev
)) {
1864 hnae_unregister_notifier(&priv
->notifier_block
);
1865 priv
->notifier_block
.notifier_call
= NULL
;
1870 static int hns_nic_dev_probe(struct platform_device
*pdev
)
1872 struct device
*dev
= &pdev
->dev
;
1873 struct net_device
*ndev
;
1874 struct hns_nic_priv
*priv
;
1875 struct device_node
*node
= dev
->of_node
;
1878 ndev
= alloc_etherdev_mq(sizeof(struct hns_nic_priv
), NIC_MAX_Q_PER_VF
);
1882 platform_set_drvdata(pdev
, ndev
);
1884 priv
= netdev_priv(ndev
);
1886 priv
->netdev
= ndev
;
1888 if (of_device_is_compatible(node
, "hisilicon,hns-nic-v1"))
1889 priv
->enet_ver
= AE_VERSION_1
;
1891 priv
->enet_ver
= AE_VERSION_2
;
1893 priv
->ae_node
= (void *)of_parse_phandle(node
, "ae-handle", 0);
1894 if (IS_ERR_OR_NULL(priv
->ae_node
)) {
1895 ret
= PTR_ERR(priv
->ae_node
);
1896 dev_err(dev
, "not find ae-handle\n");
1897 goto out_read_prop_fail
;
1900 ret
= of_property_read_u32(node
, "port-id", &priv
->port_id
);
1902 goto out_read_prop_fail
;
1904 hns_init_mac_addr(ndev
);
1906 ndev
->watchdog_timeo
= HNS_NIC_TX_TIMEOUT
;
1907 ndev
->priv_flags
|= IFF_UNICAST_FLT
;
1908 ndev
->netdev_ops
= &hns_nic_netdev_ops
;
1909 hns_ethtool_set_ops(ndev
);
1911 ndev
->features
|= NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
|
1912 NETIF_F_RXCSUM
| NETIF_F_SG
| NETIF_F_GSO
|
1914 ndev
->vlan_features
|=
1915 NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
| NETIF_F_RXCSUM
;
1916 ndev
->vlan_features
|= NETIF_F_SG
| NETIF_F_GSO
| NETIF_F_GRO
;
1918 switch (priv
->enet_ver
) {
1920 ndev
->features
|= NETIF_F_TSO
| NETIF_F_TSO6
;
1921 ndev
->hw_features
|= NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
|
1922 NETIF_F_RXCSUM
| NETIF_F_SG
| NETIF_F_GSO
|
1923 NETIF_F_GRO
| NETIF_F_TSO
| NETIF_F_TSO6
;
1929 SET_NETDEV_DEV(ndev
, dev
);
1931 if (!dma_set_mask_and_coherent(dev
, DMA_BIT_MASK(64)))
1932 dev_dbg(dev
, "set mask to 64bit\n");
1934 dev_err(dev
, "set mask to 32bit fail!\n");
1936 /* carrier off reporting is important to ethtool even BEFORE open */
1937 netif_carrier_off(ndev
);
1939 setup_timer(&priv
->service_timer
, hns_nic_service_timer
,
1940 (unsigned long)priv
);
1941 INIT_WORK(&priv
->service_task
, hns_nic_service_task
);
1943 set_bit(NIC_STATE_SERVICE_INITED
, &priv
->state
);
1944 clear_bit(NIC_STATE_SERVICE_SCHED
, &priv
->state
);
1945 set_bit(NIC_STATE_DOWN
, &priv
->state
);
1947 if (hns_nic_try_get_ae(priv
->netdev
)) {
1948 priv
->notifier_block
.notifier_call
= hns_nic_notifier_action
;
1949 ret
= hnae_register_notifier(&priv
->notifier_block
);
1951 dev_err(dev
, "register notifier fail!\n");
1952 goto out_notify_fail
;
1954 dev_dbg(dev
, "has not handle, register notifier!\n");
1960 (void)cancel_work_sync(&priv
->service_task
);
1966 static int hns_nic_dev_remove(struct platform_device
*pdev
)
1968 struct net_device
*ndev
= platform_get_drvdata(pdev
);
1969 struct hns_nic_priv
*priv
= netdev_priv(ndev
);
1971 if (ndev
->reg_state
!= NETREG_UNINITIALIZED
)
1972 unregister_netdev(ndev
);
1974 if (priv
->ring_data
)
1975 hns_nic_uninit_ring_data(priv
);
1976 priv
->ring_data
= NULL
;
1979 phy_disconnect(priv
->phy
);
1982 if (!IS_ERR_OR_NULL(priv
->ae_handle
))
1983 hnae_put_handle(priv
->ae_handle
);
1984 priv
->ae_handle
= NULL
;
1985 if (priv
->notifier_block
.notifier_call
)
1986 hnae_unregister_notifier(&priv
->notifier_block
);
1987 priv
->notifier_block
.notifier_call
= NULL
;
1989 set_bit(NIC_STATE_REMOVING
, &priv
->state
);
1990 (void)cancel_work_sync(&priv
->service_task
);
1996 static const struct of_device_id hns_enet_of_match
[] = {
1997 {.compatible
= "hisilicon,hns-nic-v1",},
1998 {.compatible
= "hisilicon,hns-nic-v2",},
2002 MODULE_DEVICE_TABLE(of
, hns_enet_of_match
);
2004 static struct platform_driver hns_nic_dev_driver
= {
2007 .of_match_table
= hns_enet_of_match
,
2009 .probe
= hns_nic_dev_probe
,
2010 .remove
= hns_nic_dev_remove
,
2013 module_platform_driver(hns_nic_dev_driver
);
2015 MODULE_DESCRIPTION("HISILICON HNS Ethernet driver");
2016 MODULE_AUTHOR("Hisilicon, Inc.");
2017 MODULE_LICENSE("GPL");
2018 MODULE_ALIAS("platform:hns-nic");