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