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