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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" | |
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 | |
36 | ||
37 | static void fill_desc(struct hnae_ring *ring, void *priv, | |
38 | int size, dma_addr_t dma, int frag_end, | |
39 | int buf_num, enum hns_desc_type type) | |
40 | { | |
41 | struct hnae_desc *desc = &ring->desc[ring->next_to_use]; | |
42 | struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; | |
43 | struct sk_buff *skb; | |
44 | __be16 protocol; | |
45 | u32 ip_offset; | |
46 | u32 asid_bufnum_pid = 0; | |
47 | u32 flag_ipoffset = 0; | |
48 | ||
49 | desc_cb->priv = priv; | |
50 | desc_cb->length = size; | |
51 | desc_cb->dma = dma; | |
52 | desc_cb->type = type; | |
53 | ||
54 | desc->addr = cpu_to_le64(dma); | |
55 | desc->tx.send_size = cpu_to_le16((u16)size); | |
56 | ||
57 | /*config bd buffer end */ | |
58 | flag_ipoffset |= 1 << HNS_TXD_VLD_B; | |
59 | ||
60 | asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S; | |
61 | ||
62 | if (type == DESC_TYPE_SKB) { | |
63 | skb = (struct sk_buff *)priv; | |
64 | ||
65 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
66 | protocol = skb->protocol; | |
67 | ip_offset = ETH_HLEN; | |
68 | ||
69 | /*if it is a SW VLAN check the next protocol*/ | |
70 | if (protocol == htons(ETH_P_8021Q)) { | |
71 | ip_offset += VLAN_HLEN; | |
72 | protocol = vlan_get_protocol(skb); | |
73 | skb->protocol = protocol; | |
74 | } | |
75 | ||
76 | if (skb->protocol == htons(ETH_P_IP)) { | |
77 | flag_ipoffset |= 1 << HNS_TXD_L3CS_B; | |
78 | /* check for tcp/udp header */ | |
79 | flag_ipoffset |= 1 << HNS_TXD_L4CS_B; | |
80 | ||
81 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
82 | /* ipv6 has not l3 cs, check for L4 header */ | |
83 | flag_ipoffset |= 1 << HNS_TXD_L4CS_B; | |
84 | } | |
85 | ||
86 | flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S; | |
87 | } | |
88 | } | |
89 | ||
90 | flag_ipoffset |= frag_end << HNS_TXD_FE_B; | |
91 | ||
92 | desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid); | |
93 | desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset); | |
94 | ||
95 | ring_ptr_move_fw(ring, next_to_use); | |
96 | } | |
97 | ||
98 | static void unfill_desc(struct hnae_ring *ring) | |
99 | { | |
100 | ring_ptr_move_bw(ring, next_to_use); | |
101 | } | |
102 | ||
103 | int hns_nic_net_xmit_hw(struct net_device *ndev, | |
104 | struct sk_buff *skb, | |
105 | struct hns_nic_ring_data *ring_data) | |
106 | { | |
107 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
108 | struct device *dev = priv->dev; | |
109 | struct hnae_ring *ring = ring_data->ring; | |
110 | struct netdev_queue *dev_queue; | |
111 | struct skb_frag_struct *frag; | |
112 | int buf_num; | |
113 | dma_addr_t dma; | |
114 | int size, next_to_use; | |
115 | int i, j; | |
116 | struct sk_buff *new_skb; | |
117 | ||
118 | assert(ring->max_desc_num_per_pkt <= ring->desc_num); | |
119 | ||
120 | /* no. of segments (plus a header) */ | |
121 | buf_num = skb_shinfo(skb)->nr_frags + 1; | |
122 | ||
123 | if (unlikely(buf_num > ring->max_desc_num_per_pkt)) { | |
124 | if (ring_space(ring) < 1) { | |
125 | ring->stats.tx_busy++; | |
126 | goto out_net_tx_busy; | |
127 | } | |
128 | ||
129 | new_skb = skb_copy(skb, GFP_ATOMIC); | |
130 | if (!new_skb) { | |
131 | ring->stats.sw_err_cnt++; | |
132 | netdev_err(ndev, "no memory to xmit!\n"); | |
133 | goto out_err_tx_ok; | |
134 | } | |
135 | ||
136 | dev_kfree_skb_any(skb); | |
137 | skb = new_skb; | |
138 | buf_num = 1; | |
139 | assert(skb_shinfo(skb)->nr_frags == 1); | |
140 | } else if (buf_num > ring_space(ring)) { | |
141 | ring->stats.tx_busy++; | |
142 | goto out_net_tx_busy; | |
143 | } | |
144 | next_to_use = ring->next_to_use; | |
145 | ||
146 | /* fill the first part */ | |
147 | size = skb_headlen(skb); | |
148 | dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE); | |
149 | if (dma_mapping_error(dev, dma)) { | |
150 | netdev_err(ndev, "TX head DMA map failed\n"); | |
151 | ring->stats.sw_err_cnt++; | |
152 | goto out_err_tx_ok; | |
153 | } | |
154 | fill_desc(ring, skb, size, dma, buf_num == 1 ? 1 : 0, buf_num, | |
155 | DESC_TYPE_SKB); | |
156 | ||
157 | /* fill the fragments */ | |
158 | for (i = 1; i < buf_num; i++) { | |
159 | frag = &skb_shinfo(skb)->frags[i - 1]; | |
160 | size = skb_frag_size(frag); | |
161 | dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE); | |
162 | if (dma_mapping_error(dev, dma)) { | |
163 | netdev_err(ndev, "TX frag(%d) DMA map failed\n", i); | |
164 | ring->stats.sw_err_cnt++; | |
165 | goto out_map_frag_fail; | |
166 | } | |
167 | fill_desc(ring, skb_frag_page(frag), size, dma, | |
168 | buf_num - 1 == i ? 1 : 0, buf_num, DESC_TYPE_PAGE); | |
169 | } | |
170 | ||
171 | /*complete translate all packets*/ | |
172 | dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping); | |
173 | netdev_tx_sent_queue(dev_queue, skb->len); | |
174 | ||
175 | wmb(); /* commit all data before submit */ | |
176 | assert(skb->queue_mapping < priv->ae_handle->q_num); | |
177 | hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num); | |
178 | ring->stats.tx_pkts++; | |
179 | ring->stats.tx_bytes += skb->len; | |
180 | ||
181 | return NETDEV_TX_OK; | |
182 | ||
183 | out_map_frag_fail: | |
184 | ||
185 | for (j = i - 1; j > 0; j--) { | |
186 | unfill_desc(ring); | |
187 | next_to_use = ring->next_to_use; | |
188 | dma_unmap_page(dev, ring->desc_cb[next_to_use].dma, | |
189 | ring->desc_cb[next_to_use].length, | |
190 | DMA_TO_DEVICE); | |
191 | } | |
192 | ||
193 | unfill_desc(ring); | |
194 | next_to_use = ring->next_to_use; | |
195 | dma_unmap_single(dev, ring->desc_cb[next_to_use].dma, | |
196 | ring->desc_cb[next_to_use].length, DMA_TO_DEVICE); | |
197 | ||
198 | out_err_tx_ok: | |
199 | ||
200 | dev_kfree_skb_any(skb); | |
201 | return NETDEV_TX_OK; | |
202 | ||
203 | out_net_tx_busy: | |
204 | ||
205 | netif_stop_subqueue(ndev, skb->queue_mapping); | |
206 | ||
207 | /* Herbert's original patch had: | |
208 | * smp_mb__after_netif_stop_queue(); | |
209 | * but since that doesn't exist yet, just open code it. | |
210 | */ | |
211 | smp_mb(); | |
212 | return NETDEV_TX_BUSY; | |
213 | } | |
214 | ||
215 | /** | |
216 | * hns_nic_get_headlen - determine size of header for RSC/LRO/GRO/FCOE | |
217 | * @data: pointer to the start of the headers | |
218 | * @max: total length of section to find headers in | |
219 | * | |
220 | * This function is meant to determine the length of headers that will | |
221 | * be recognized by hardware for LRO, GRO, and RSC offloads. The main | |
222 | * motivation of doing this is to only perform one pull for IPv4 TCP | |
223 | * packets so that we can do basic things like calculating the gso_size | |
224 | * based on the average data per packet. | |
225 | **/ | |
226 | static unsigned int hns_nic_get_headlen(unsigned char *data, u32 flag, | |
227 | unsigned int max_size) | |
228 | { | |
229 | unsigned char *network; | |
230 | u8 hlen; | |
231 | ||
232 | /* this should never happen, but better safe than sorry */ | |
233 | if (max_size < ETH_HLEN) | |
234 | return max_size; | |
235 | ||
236 | /* initialize network frame pointer */ | |
237 | network = data; | |
238 | ||
239 | /* set first protocol and move network header forward */ | |
240 | network += ETH_HLEN; | |
241 | ||
242 | /* handle any vlan tag if present */ | |
243 | if (hnae_get_field(flag, HNS_RXD_VLAN_M, HNS_RXD_VLAN_S) | |
244 | == HNS_RX_FLAG_VLAN_PRESENT) { | |
245 | if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN)) | |
246 | return max_size; | |
247 | ||
248 | network += VLAN_HLEN; | |
249 | } | |
250 | ||
251 | /* handle L3 protocols */ | |
252 | if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S) | |
253 | == HNS_RX_FLAG_L3ID_IPV4) { | |
254 | if ((typeof(max_size))(network - data) > | |
255 | (max_size - sizeof(struct iphdr))) | |
256 | return max_size; | |
257 | ||
258 | /* access ihl as a u8 to avoid unaligned access on ia64 */ | |
259 | hlen = (network[0] & 0x0F) << 2; | |
260 | ||
261 | /* verify hlen meets minimum size requirements */ | |
262 | if (hlen < sizeof(struct iphdr)) | |
263 | return network - data; | |
264 | ||
265 | /* record next protocol if header is present */ | |
266 | } else if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S) | |
267 | == HNS_RX_FLAG_L3ID_IPV6) { | |
268 | if ((typeof(max_size))(network - data) > | |
269 | (max_size - sizeof(struct ipv6hdr))) | |
270 | return max_size; | |
271 | ||
272 | /* record next protocol */ | |
273 | hlen = sizeof(struct ipv6hdr); | |
274 | } else { | |
275 | return network - data; | |
276 | } | |
277 | ||
278 | /* relocate pointer to start of L4 header */ | |
279 | network += hlen; | |
280 | ||
281 | /* finally sort out TCP/UDP */ | |
282 | if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S) | |
283 | == HNS_RX_FLAG_L4ID_TCP) { | |
284 | if ((typeof(max_size))(network - data) > | |
285 | (max_size - sizeof(struct tcphdr))) | |
286 | return max_size; | |
287 | ||
288 | /* access doff as a u8 to avoid unaligned access on ia64 */ | |
289 | hlen = (network[12] & 0xF0) >> 2; | |
290 | ||
291 | /* verify hlen meets minimum size requirements */ | |
292 | if (hlen < sizeof(struct tcphdr)) | |
293 | return network - data; | |
294 | ||
295 | network += hlen; | |
296 | } else if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S) | |
297 | == HNS_RX_FLAG_L4ID_UDP) { | |
298 | if ((typeof(max_size))(network - data) > | |
299 | (max_size - sizeof(struct udphdr))) | |
300 | return max_size; | |
301 | ||
302 | network += sizeof(struct udphdr); | |
303 | } | |
304 | ||
305 | /* If everything has gone correctly network should be the | |
306 | * data section of the packet and will be the end of the header. | |
307 | * If not then it probably represents the end of the last recognized | |
308 | * header. | |
309 | */ | |
310 | if ((typeof(max_size))(network - data) < max_size) | |
311 | return network - data; | |
312 | else | |
313 | return max_size; | |
314 | } | |
315 | ||
316 | static void | |
317 | hns_nic_reuse_page(struct hnae_desc_cb *desc_cb, int tsize, int last_offset) | |
318 | { | |
319 | /* avoid re-using remote pages,flag default unreuse */ | |
320 | if (likely(page_to_nid(desc_cb->priv) == numa_node_id())) { | |
321 | /* move offset up to the next cache line */ | |
322 | desc_cb->page_offset += tsize; | |
323 | ||
324 | if (desc_cb->page_offset <= last_offset) { | |
325 | desc_cb->reuse_flag = 1; | |
326 | /* bump ref count on page before it is given*/ | |
327 | get_page(desc_cb->priv); | |
328 | } | |
329 | } | |
330 | } | |
331 | ||
332 | static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data, | |
333 | struct sk_buff **out_skb, int *out_bnum) | |
334 | { | |
335 | struct hnae_ring *ring = ring_data->ring; | |
336 | struct net_device *ndev = ring_data->napi.dev; | |
337 | struct sk_buff *skb; | |
338 | struct hnae_desc *desc; | |
339 | struct hnae_desc_cb *desc_cb; | |
340 | unsigned char *va; | |
341 | int bnum, length, size, i, truesize, last_offset; | |
342 | int pull_len; | |
343 | u32 bnum_flag; | |
344 | ||
345 | last_offset = hnae_page_size(ring) - hnae_buf_size(ring); | |
346 | desc = &ring->desc[ring->next_to_clean]; | |
347 | desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
348 | length = le16_to_cpu(desc->rx.pkt_len); | |
349 | bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag); | |
350 | bnum = hnae_get_field(bnum_flag, HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S); | |
351 | *out_bnum = bnum; | |
352 | va = (unsigned char *)desc_cb->buf + desc_cb->page_offset; | |
353 | ||
354 | skb = *out_skb = napi_alloc_skb(&ring_data->napi, HNS_RX_HEAD_SIZE); | |
355 | if (unlikely(!skb)) { | |
356 | netdev_err(ndev, "alloc rx skb fail\n"); | |
357 | ring->stats.sw_err_cnt++; | |
358 | return -ENOMEM; | |
359 | } | |
360 | ||
361 | if (length <= HNS_RX_HEAD_SIZE) { | |
362 | memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long))); | |
363 | ||
364 | /* we can reuse buffer as-is, just make sure it is local */ | |
365 | if (likely(page_to_nid(desc_cb->priv) == numa_node_id())) | |
366 | desc_cb->reuse_flag = 1; | |
367 | else /* this page cannot be reused so discard it */ | |
368 | put_page(desc_cb->priv); | |
369 | ||
370 | ring_ptr_move_fw(ring, next_to_clean); | |
371 | ||
372 | if (unlikely(bnum != 1)) { /* check err*/ | |
373 | *out_bnum = 1; | |
374 | goto out_bnum_err; | |
375 | } | |
376 | } else { | |
377 | ring->stats.seg_pkt_cnt++; | |
378 | ||
379 | pull_len = hns_nic_get_headlen(va, bnum_flag, HNS_RX_HEAD_SIZE); | |
380 | memcpy(__skb_put(skb, pull_len), va, | |
381 | ALIGN(pull_len, sizeof(long))); | |
382 | ||
383 | size = le16_to_cpu(desc->rx.size); | |
384 | truesize = ALIGN(size, L1_CACHE_BYTES); | |
385 | skb_add_rx_frag(skb, 0, desc_cb->priv, | |
386 | desc_cb->page_offset + pull_len, | |
387 | size - pull_len, truesize - pull_len); | |
388 | ||
389 | hns_nic_reuse_page(desc_cb, truesize, last_offset); | |
390 | ring_ptr_move_fw(ring, next_to_clean); | |
391 | ||
392 | if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/ | |
393 | *out_bnum = 1; | |
394 | goto out_bnum_err; | |
395 | } | |
396 | for (i = 1; i < bnum; i++) { | |
397 | desc = &ring->desc[ring->next_to_clean]; | |
398 | desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
399 | size = le16_to_cpu(desc->rx.size); | |
400 | truesize = ALIGN(size, L1_CACHE_BYTES); | |
401 | skb_add_rx_frag(skb, i, desc_cb->priv, | |
402 | desc_cb->page_offset, | |
403 | size, truesize); | |
404 | ||
405 | hns_nic_reuse_page(desc_cb, truesize, last_offset); | |
406 | ring_ptr_move_fw(ring, next_to_clean); | |
407 | } | |
408 | } | |
409 | ||
410 | /* check except process, free skb and jump the desc */ | |
411 | if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) { | |
412 | out_bnum_err: | |
413 | *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/ | |
414 | netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n", | |
415 | bnum, ring->max_desc_num_per_pkt, | |
416 | length, (int)MAX_SKB_FRAGS, | |
417 | ((u64 *)desc)[0], ((u64 *)desc)[1]); | |
418 | ring->stats.err_bd_num++; | |
419 | dev_kfree_skb_any(skb); | |
420 | return -EDOM; | |
421 | } | |
422 | ||
423 | bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag); | |
424 | ||
425 | if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) { | |
426 | netdev_err(ndev, "no valid bd,%016llx,%016llx\n", | |
427 | ((u64 *)desc)[0], ((u64 *)desc)[1]); | |
428 | ring->stats.non_vld_descs++; | |
429 | dev_kfree_skb_any(skb); | |
430 | return -EINVAL; | |
431 | } | |
432 | ||
433 | if (unlikely((!desc->rx.pkt_len) || | |
434 | hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) { | |
b5996f11 | 435 | ring->stats.err_pkt_len++; |
436 | dev_kfree_skb_any(skb); | |
437 | return -EFAULT; | |
438 | } | |
439 | ||
440 | if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) { | |
b5996f11 | 441 | ring->stats.l2_err++; |
442 | dev_kfree_skb_any(skb); | |
443 | return -EFAULT; | |
444 | } | |
445 | ||
446 | ring->stats.rx_pkts++; | |
447 | ring->stats.rx_bytes += skb->len; | |
448 | ||
449 | if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L3E_B) || | |
450 | hnae_get_bit(bnum_flag, HNS_RXD_L4E_B))) { | |
b5996f11 | 451 | ring->stats.l3l4_csum_err++; |
452 | return 0; | |
453 | } | |
454 | ||
455 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
456 | ||
457 | return 0; | |
458 | } | |
459 | ||
460 | static void | |
461 | hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count) | |
462 | { | |
463 | int i, ret; | |
464 | struct hnae_desc_cb res_cbs; | |
465 | struct hnae_desc_cb *desc_cb; | |
466 | struct hnae_ring *ring = ring_data->ring; | |
467 | struct net_device *ndev = ring_data->napi.dev; | |
468 | ||
469 | for (i = 0; i < cleand_count; i++) { | |
470 | desc_cb = &ring->desc_cb[ring->next_to_use]; | |
471 | if (desc_cb->reuse_flag) { | |
472 | ring->stats.reuse_pg_cnt++; | |
473 | hnae_reuse_buffer(ring, ring->next_to_use); | |
474 | } else { | |
475 | ret = hnae_reserve_buffer_map(ring, &res_cbs); | |
476 | if (ret) { | |
477 | ring->stats.sw_err_cnt++; | |
478 | netdev_err(ndev, "hnae reserve buffer map failed.\n"); | |
479 | break; | |
480 | } | |
481 | hnae_replace_buffer(ring, ring->next_to_use, &res_cbs); | |
482 | } | |
483 | ||
484 | ring_ptr_move_fw(ring, next_to_use); | |
485 | } | |
486 | ||
487 | wmb(); /* make all data has been write before submit */ | |
488 | writel_relaxed(i, ring->io_base + RCB_REG_HEAD); | |
489 | } | |
490 | ||
491 | /* return error number for error or number of desc left to take | |
492 | */ | |
493 | static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data, | |
494 | struct sk_buff *skb) | |
495 | { | |
496 | struct net_device *ndev = ring_data->napi.dev; | |
497 | ||
498 | skb->protocol = eth_type_trans(skb, ndev); | |
499 | (void)napi_gro_receive(&ring_data->napi, skb); | |
500 | ndev->last_rx = jiffies; | |
501 | } | |
502 | ||
503 | static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data, | |
504 | int budget, void *v) | |
505 | { | |
506 | struct hnae_ring *ring = ring_data->ring; | |
507 | struct sk_buff *skb; | |
508 | int num, bnum, ex_num; | |
509 | #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16 | |
510 | int recv_pkts, recv_bds, clean_count, err; | |
511 | ||
512 | num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); | |
513 | rmb(); /* make sure num taken effect before the other data is touched */ | |
514 | ||
515 | recv_pkts = 0, recv_bds = 0, clean_count = 0; | |
516 | recv: | |
517 | while (recv_pkts < budget && recv_bds < num) { | |
518 | /* reuse or realloc buffers*/ | |
519 | if (clean_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) { | |
520 | hns_nic_alloc_rx_buffers(ring_data, clean_count); | |
521 | clean_count = 0; | |
522 | } | |
523 | ||
524 | /* poll one pkg*/ | |
525 | err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum); | |
526 | if (unlikely(!skb)) /* this fault cannot be repaired */ | |
527 | break; | |
528 | ||
529 | recv_bds += bnum; | |
530 | clean_count += bnum; | |
531 | if (unlikely(err)) { /* do jump the err */ | |
532 | recv_pkts++; | |
533 | continue; | |
534 | } | |
535 | ||
536 | /* do update ip stack process*/ | |
537 | ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)( | |
538 | ring_data, skb); | |
539 | recv_pkts++; | |
540 | } | |
541 | ||
542 | /* make all data has been write before submit */ | |
543 | if (clean_count > 0) { | |
544 | hns_nic_alloc_rx_buffers(ring_data, clean_count); | |
545 | clean_count = 0; | |
546 | } | |
547 | ||
548 | if (recv_pkts < budget) { | |
549 | ex_num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); | |
550 | rmb(); /*complete read rx ring bd number*/ | |
551 | if (ex_num > 0) { | |
552 | num += ex_num; | |
553 | goto recv; | |
554 | } | |
555 | } | |
556 | ||
557 | return recv_pkts; | |
558 | } | |
559 | ||
560 | static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data) | |
561 | { | |
562 | struct hnae_ring *ring = ring_data->ring; | |
563 | int num = 0; | |
564 | ||
565 | /* for hardware bug fixed */ | |
566 | num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); | |
567 | ||
568 | if (num > 0) { | |
569 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( | |
570 | ring_data->ring, 1); | |
571 | ||
572 | napi_schedule(&ring_data->napi); | |
573 | } | |
574 | } | |
575 | ||
576 | static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring, | |
577 | int *bytes, int *pkts) | |
578 | { | |
579 | struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
580 | ||
581 | (*pkts) += (desc_cb->type == DESC_TYPE_SKB); | |
582 | (*bytes) += desc_cb->length; | |
583 | /* desc_cb will be cleaned, after hnae_free_buffer_detach*/ | |
584 | hnae_free_buffer_detach(ring, ring->next_to_clean); | |
585 | ||
586 | ring_ptr_move_fw(ring, next_to_clean); | |
587 | } | |
588 | ||
589 | static int is_valid_clean_head(struct hnae_ring *ring, int h) | |
590 | { | |
591 | int u = ring->next_to_use; | |
592 | int c = ring->next_to_clean; | |
593 | ||
594 | if (unlikely(h > ring->desc_num)) | |
595 | return 0; | |
596 | ||
597 | assert(u > 0 && u < ring->desc_num); | |
598 | assert(c > 0 && c < ring->desc_num); | |
599 | assert(u != c && h != c); /* must be checked before call this func */ | |
600 | ||
601 | return u > c ? (h > c && h <= u) : (h > c || h <= u); | |
602 | } | |
603 | ||
604 | /* netif_tx_lock will turn down the performance, set only when necessary */ | |
605 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
606 | #define NETIF_TX_LOCK(ndev) netif_tx_lock(ndev) | |
607 | #define NETIF_TX_UNLOCK(ndev) netif_tx_unlock(ndev) | |
608 | #else | |
609 | #define NETIF_TX_LOCK(ndev) | |
610 | #define NETIF_TX_UNLOCK(ndev) | |
611 | #endif | |
612 | /* reclaim all desc in one budget | |
613 | * return error or number of desc left | |
614 | */ | |
615 | static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data, | |
616 | int budget, void *v) | |
617 | { | |
618 | struct hnae_ring *ring = ring_data->ring; | |
619 | struct net_device *ndev = ring_data->napi.dev; | |
620 | struct netdev_queue *dev_queue; | |
621 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
622 | int head; | |
623 | int bytes, pkts; | |
624 | ||
625 | NETIF_TX_LOCK(ndev); | |
626 | ||
627 | head = readl_relaxed(ring->io_base + RCB_REG_HEAD); | |
628 | rmb(); /* make sure head is ready before touch any data */ | |
629 | ||
630 | if (is_ring_empty(ring) || head == ring->next_to_clean) { | |
631 | NETIF_TX_UNLOCK(ndev); | |
632 | return 0; /* no data to poll */ | |
633 | } | |
634 | ||
635 | if (!is_valid_clean_head(ring, head)) { | |
636 | netdev_err(ndev, "wrong head (%d, %d-%d)\n", head, | |
637 | ring->next_to_use, ring->next_to_clean); | |
638 | ring->stats.io_err_cnt++; | |
639 | NETIF_TX_UNLOCK(ndev); | |
640 | return -EIO; | |
641 | } | |
642 | ||
643 | bytes = 0; | |
644 | pkts = 0; | |
645 | while (head != ring->next_to_clean) | |
646 | hns_nic_reclaim_one_desc(ring, &bytes, &pkts); | |
647 | ||
648 | NETIF_TX_UNLOCK(ndev); | |
649 | ||
650 | dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index); | |
651 | netdev_tx_completed_queue(dev_queue, pkts, bytes); | |
652 | ||
653 | if (unlikely(pkts && netif_carrier_ok(ndev) && | |
654 | (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) { | |
655 | /* Make sure that anybody stopping the queue after this | |
656 | * sees the new next_to_clean. | |
657 | */ | |
658 | smp_mb(); | |
659 | if (netif_tx_queue_stopped(dev_queue) && | |
660 | !test_bit(NIC_STATE_DOWN, &priv->state)) { | |
661 | netif_tx_wake_queue(dev_queue); | |
662 | ring->stats.restart_queue++; | |
663 | } | |
664 | } | |
665 | return 0; | |
666 | } | |
667 | ||
668 | static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data) | |
669 | { | |
670 | struct hnae_ring *ring = ring_data->ring; | |
671 | int head = ring->next_to_clean; | |
672 | ||
673 | /* for hardware bug fixed */ | |
674 | head = readl_relaxed(ring->io_base + RCB_REG_HEAD); | |
675 | ||
676 | if (head != ring->next_to_clean) { | |
677 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( | |
678 | ring_data->ring, 1); | |
679 | ||
680 | napi_schedule(&ring_data->napi); | |
681 | } | |
682 | } | |
683 | ||
684 | static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data) | |
685 | { | |
686 | struct hnae_ring *ring = ring_data->ring; | |
687 | struct net_device *ndev = ring_data->napi.dev; | |
688 | struct netdev_queue *dev_queue; | |
689 | int head; | |
690 | int bytes, pkts; | |
691 | ||
692 | NETIF_TX_LOCK(ndev); | |
693 | ||
694 | head = ring->next_to_use; /* ntu :soft setted ring position*/ | |
695 | bytes = 0; | |
696 | pkts = 0; | |
697 | while (head != ring->next_to_clean) | |
698 | hns_nic_reclaim_one_desc(ring, &bytes, &pkts); | |
699 | ||
700 | NETIF_TX_UNLOCK(ndev); | |
701 | ||
702 | dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index); | |
703 | netdev_tx_reset_queue(dev_queue); | |
704 | } | |
705 | ||
706 | static int hns_nic_common_poll(struct napi_struct *napi, int budget) | |
707 | { | |
708 | struct hns_nic_ring_data *ring_data = | |
709 | container_of(napi, struct hns_nic_ring_data, napi); | |
710 | int clean_complete = ring_data->poll_one( | |
711 | ring_data, budget, ring_data->ex_process); | |
712 | ||
713 | if (clean_complete >= 0 && clean_complete < budget) { | |
714 | napi_complete(napi); | |
715 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( | |
716 | ring_data->ring, 0); | |
717 | ||
718 | ring_data->fini_process(ring_data); | |
719 | } | |
720 | ||
721 | return clean_complete; | |
722 | } | |
723 | ||
724 | static irqreturn_t hns_irq_handle(int irq, void *dev) | |
725 | { | |
726 | struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev; | |
727 | ||
728 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( | |
729 | ring_data->ring, 1); | |
730 | napi_schedule(&ring_data->napi); | |
731 | ||
732 | return IRQ_HANDLED; | |
733 | } | |
734 | ||
735 | /** | |
736 | *hns_nic_adjust_link - adjust net work mode by the phy stat or new param | |
737 | *@ndev: net device | |
738 | */ | |
739 | static void hns_nic_adjust_link(struct net_device *ndev) | |
740 | { | |
741 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
742 | struct hnae_handle *h = priv->ae_handle; | |
743 | ||
744 | h->dev->ops->adjust_link(h, ndev->phydev->speed, ndev->phydev->duplex); | |
745 | } | |
746 | ||
747 | /** | |
748 | *hns_nic_init_phy - init phy | |
749 | *@ndev: net device | |
750 | *@h: ae handle | |
751 | * Return 0 on success, negative on failure | |
752 | */ | |
753 | int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h) | |
754 | { | |
755 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
756 | struct phy_device *phy_dev = NULL; | |
757 | ||
758 | if (!h->phy_node) | |
759 | return 0; | |
760 | ||
761 | if (h->phy_if != PHY_INTERFACE_MODE_XGMII) | |
762 | phy_dev = of_phy_connect(ndev, h->phy_node, | |
763 | hns_nic_adjust_link, 0, h->phy_if); | |
764 | else | |
765 | phy_dev = of_phy_attach(ndev, h->phy_node, 0, h->phy_if); | |
766 | ||
767 | if (unlikely(!phy_dev) || IS_ERR(phy_dev)) | |
768 | return !phy_dev ? -ENODEV : PTR_ERR(phy_dev); | |
769 | ||
770 | phy_dev->supported &= h->if_support; | |
771 | phy_dev->advertising = phy_dev->supported; | |
772 | ||
773 | if (h->phy_if == PHY_INTERFACE_MODE_XGMII) | |
774 | phy_dev->autoneg = false; | |
775 | ||
776 | priv->phy = phy_dev; | |
777 | ||
778 | return 0; | |
779 | } | |
780 | ||
781 | static int hns_nic_ring_open(struct net_device *netdev, int idx) | |
782 | { | |
783 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
784 | struct hnae_handle *h = priv->ae_handle; | |
785 | ||
786 | napi_enable(&priv->ring_data[idx].napi); | |
787 | ||
788 | enable_irq(priv->ring_data[idx].ring->irq); | |
789 | h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0); | |
790 | ||
791 | return 0; | |
792 | } | |
793 | ||
794 | static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p) | |
795 | { | |
796 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
797 | struct hnae_handle *h = priv->ae_handle; | |
798 | struct sockaddr *mac_addr = p; | |
799 | int ret; | |
800 | ||
801 | if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data)) | |
802 | return -EADDRNOTAVAIL; | |
803 | ||
804 | ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data); | |
805 | if (ret) { | |
806 | netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret); | |
807 | return ret; | |
808 | } | |
809 | ||
810 | memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len); | |
811 | ||
812 | return 0; | |
813 | } | |
814 | ||
815 | void hns_nic_update_stats(struct net_device *netdev) | |
816 | { | |
817 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
818 | struct hnae_handle *h = priv->ae_handle; | |
819 | ||
820 | h->dev->ops->update_stats(h, &netdev->stats); | |
821 | } | |
822 | ||
823 | /* set mac addr if it is configed. or leave it to the AE driver */ | |
824 | static void hns_init_mac_addr(struct net_device *ndev) | |
825 | { | |
826 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
827 | struct device_node *node = priv->dev->of_node; | |
828 | const void *mac_addr_temp; | |
829 | ||
830 | mac_addr_temp = of_get_mac_address(node); | |
831 | if (mac_addr_temp && is_valid_ether_addr(mac_addr_temp)) { | |
832 | memcpy(ndev->dev_addr, mac_addr_temp, ndev->addr_len); | |
833 | } else { | |
834 | eth_hw_addr_random(ndev); | |
835 | dev_warn(priv->dev, "No valid mac, use random mac %pM", | |
836 | ndev->dev_addr); | |
837 | } | |
838 | } | |
839 | ||
840 | static void hns_nic_ring_close(struct net_device *netdev, int idx) | |
841 | { | |
842 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
843 | struct hnae_handle *h = priv->ae_handle; | |
844 | ||
845 | h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1); | |
846 | disable_irq(priv->ring_data[idx].ring->irq); | |
847 | ||
848 | napi_disable(&priv->ring_data[idx].napi); | |
849 | } | |
850 | ||
851 | static int hns_nic_init_irq(struct hns_nic_priv *priv) | |
852 | { | |
853 | struct hnae_handle *h = priv->ae_handle; | |
854 | struct hns_nic_ring_data *rd; | |
855 | int i; | |
856 | int ret; | |
857 | int cpu; | |
858 | cpumask_t mask; | |
859 | ||
860 | for (i = 0; i < h->q_num * 2; i++) { | |
861 | rd = &priv->ring_data[i]; | |
862 | ||
863 | if (rd->ring->irq_init_flag == RCB_IRQ_INITED) | |
864 | break; | |
865 | ||
866 | snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN, | |
867 | "%s-%s%d", priv->netdev->name, | |
868 | (i < h->q_num ? "tx" : "rx"), rd->queue_index); | |
869 | ||
870 | rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0'; | |
871 | ||
872 | ret = request_irq(rd->ring->irq, | |
873 | hns_irq_handle, 0, rd->ring->ring_name, rd); | |
874 | if (ret) { | |
875 | netdev_err(priv->netdev, "request irq(%d) fail\n", | |
876 | rd->ring->irq); | |
877 | return ret; | |
878 | } | |
879 | disable_irq(rd->ring->irq); | |
880 | rd->ring->irq_init_flag = RCB_IRQ_INITED; | |
881 | ||
882 | /*set cpu affinity*/ | |
883 | if (cpu_online(rd->queue_index)) { | |
884 | cpumask_clear(&mask); | |
885 | cpu = rd->queue_index; | |
886 | cpumask_set_cpu(cpu, &mask); | |
887 | irq_set_affinity_hint(rd->ring->irq, &mask); | |
888 | } | |
889 | } | |
890 | ||
891 | return 0; | |
892 | } | |
893 | ||
894 | static int hns_nic_net_up(struct net_device *ndev) | |
895 | { | |
896 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
897 | struct hnae_handle *h = priv->ae_handle; | |
898 | int i, j, k; | |
899 | int ret; | |
900 | ||
901 | ret = hns_nic_init_irq(priv); | |
902 | if (ret != 0) { | |
903 | netdev_err(ndev, "hns init irq failed! ret=%d\n", ret); | |
904 | return ret; | |
905 | } | |
906 | ||
907 | for (i = 0; i < h->q_num * 2; i++) { | |
908 | ret = hns_nic_ring_open(ndev, i); | |
909 | if (ret) | |
910 | goto out_has_some_queues; | |
911 | } | |
912 | ||
913 | for (k = 0; k < h->q_num; k++) | |
914 | h->dev->ops->toggle_queue_status(h->qs[k], 1); | |
915 | ||
916 | ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr); | |
917 | if (ret) | |
918 | goto out_set_mac_addr_err; | |
919 | ||
920 | ret = h->dev->ops->start ? h->dev->ops->start(h) : 0; | |
921 | if (ret) | |
922 | goto out_start_err; | |
923 | ||
924 | if (priv->phy) | |
925 | phy_start(priv->phy); | |
926 | ||
927 | clear_bit(NIC_STATE_DOWN, &priv->state); | |
928 | (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ); | |
929 | ||
930 | return 0; | |
931 | ||
932 | out_start_err: | |
933 | netif_stop_queue(ndev); | |
934 | out_set_mac_addr_err: | |
935 | for (k = 0; k < h->q_num; k++) | |
936 | h->dev->ops->toggle_queue_status(h->qs[k], 0); | |
937 | out_has_some_queues: | |
938 | for (j = i - 1; j >= 0; j--) | |
939 | hns_nic_ring_close(ndev, j); | |
940 | ||
941 | set_bit(NIC_STATE_DOWN, &priv->state); | |
942 | ||
943 | return ret; | |
944 | } | |
945 | ||
946 | static void hns_nic_net_down(struct net_device *ndev) | |
947 | { | |
948 | int i; | |
949 | struct hnae_ae_ops *ops; | |
950 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
951 | ||
952 | if (test_and_set_bit(NIC_STATE_DOWN, &priv->state)) | |
953 | return; | |
954 | ||
955 | (void)del_timer_sync(&priv->service_timer); | |
956 | netif_tx_stop_all_queues(ndev); | |
957 | netif_carrier_off(ndev); | |
958 | netif_tx_disable(ndev); | |
959 | priv->link = 0; | |
960 | ||
961 | if (priv->phy) | |
962 | phy_stop(priv->phy); | |
963 | ||
964 | ops = priv->ae_handle->dev->ops; | |
965 | ||
966 | if (ops->stop) | |
967 | ops->stop(priv->ae_handle); | |
968 | ||
969 | netif_tx_stop_all_queues(ndev); | |
970 | ||
971 | for (i = priv->ae_handle->q_num - 1; i >= 0; i--) { | |
972 | hns_nic_ring_close(ndev, i); | |
973 | hns_nic_ring_close(ndev, i + priv->ae_handle->q_num); | |
974 | ||
975 | /* clean tx buffers*/ | |
976 | hns_nic_tx_clr_all_bufs(priv->ring_data + i); | |
977 | } | |
978 | } | |
979 | ||
980 | void hns_nic_net_reset(struct net_device *ndev) | |
981 | { | |
982 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
983 | struct hnae_handle *handle = priv->ae_handle; | |
984 | ||
985 | while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state)) | |
986 | usleep_range(1000, 2000); | |
987 | ||
988 | (void)hnae_reinit_handle(handle); | |
989 | ||
990 | clear_bit(NIC_STATE_RESETTING, &priv->state); | |
991 | } | |
992 | ||
993 | void hns_nic_net_reinit(struct net_device *netdev) | |
994 | { | |
995 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
996 | ||
997 | priv->netdev->trans_start = jiffies; | |
998 | while (test_and_set_bit(NIC_STATE_REINITING, &priv->state)) | |
999 | usleep_range(1000, 2000); | |
1000 | ||
1001 | hns_nic_net_down(netdev); | |
1002 | hns_nic_net_reset(netdev); | |
1003 | (void)hns_nic_net_up(netdev); | |
1004 | clear_bit(NIC_STATE_REINITING, &priv->state); | |
1005 | } | |
1006 | ||
1007 | static int hns_nic_net_open(struct net_device *ndev) | |
1008 | { | |
1009 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1010 | struct hnae_handle *h = priv->ae_handle; | |
1011 | int ret; | |
1012 | ||
1013 | if (test_bit(NIC_STATE_TESTING, &priv->state)) | |
1014 | return -EBUSY; | |
1015 | ||
1016 | priv->link = 0; | |
1017 | netif_carrier_off(ndev); | |
1018 | ||
1019 | ret = netif_set_real_num_tx_queues(ndev, h->q_num); | |
1020 | if (ret < 0) { | |
1021 | netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n", | |
1022 | ret); | |
1023 | return ret; | |
1024 | } | |
1025 | ||
1026 | ret = netif_set_real_num_rx_queues(ndev, h->q_num); | |
1027 | if (ret < 0) { | |
1028 | netdev_err(ndev, | |
1029 | "netif_set_real_num_rx_queues fail, ret=%d!\n", ret); | |
1030 | return ret; | |
1031 | } | |
1032 | ||
1033 | ret = hns_nic_net_up(ndev); | |
1034 | if (ret) { | |
1035 | netdev_err(ndev, | |
1036 | "hns net up fail, ret=%d!\n", ret); | |
1037 | return ret; | |
1038 | } | |
1039 | ||
1040 | return 0; | |
1041 | } | |
1042 | ||
1043 | static int hns_nic_net_stop(struct net_device *ndev) | |
1044 | { | |
1045 | hns_nic_net_down(ndev); | |
1046 | ||
1047 | return 0; | |
1048 | } | |
1049 | ||
1050 | static void hns_tx_timeout_reset(struct hns_nic_priv *priv); | |
1051 | static void hns_nic_net_timeout(struct net_device *ndev) | |
1052 | { | |
1053 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1054 | ||
1055 | hns_tx_timeout_reset(priv); | |
1056 | } | |
1057 | ||
1058 | static int hns_nic_do_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
1059 | int cmd) | |
1060 | { | |
1061 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1062 | struct phy_device *phy_dev = priv->phy; | |
1063 | ||
1064 | if (!netif_running(netdev)) | |
1065 | return -EINVAL; | |
1066 | ||
1067 | if (!phy_dev) | |
1068 | return -ENOTSUPP; | |
1069 | ||
1070 | return phy_mii_ioctl(phy_dev, ifr, cmd); | |
1071 | } | |
1072 | ||
1073 | /* use only for netconsole to poll with the device without interrupt */ | |
1074 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1075 | void hns_nic_poll_controller(struct net_device *ndev) | |
1076 | { | |
1077 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1078 | unsigned long flags; | |
1079 | int i; | |
1080 | ||
1081 | local_irq_save(flags); | |
1082 | for (i = 0; i < priv->ae_handle->q_num * 2; i++) | |
1083 | napi_schedule(&priv->ring_data[i].napi); | |
1084 | local_irq_restore(flags); | |
1085 | } | |
1086 | #endif | |
1087 | ||
1088 | static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb, | |
1089 | struct net_device *ndev) | |
1090 | { | |
1091 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1092 | int ret; | |
1093 | ||
1094 | assert(skb->queue_mapping < ndev->ae_handle->q_num); | |
1095 | ret = hns_nic_net_xmit_hw(ndev, skb, | |
1096 | &tx_ring_data(priv, skb->queue_mapping)); | |
1097 | if (ret == NETDEV_TX_OK) { | |
1098 | ndev->trans_start = jiffies; | |
1099 | ndev->stats.tx_bytes += skb->len; | |
1100 | ndev->stats.tx_packets++; | |
1101 | } | |
1102 | return (netdev_tx_t)ret; | |
1103 | } | |
1104 | ||
1105 | static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu) | |
1106 | { | |
1107 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1108 | struct hnae_handle *h = priv->ae_handle; | |
1109 | int ret; | |
1110 | ||
1111 | /* MTU < 68 is an error and causes problems on some kernels */ | |
1112 | if (new_mtu < 68) | |
1113 | return -EINVAL; | |
1114 | ||
1115 | if (!h->dev->ops->set_mtu) | |
1116 | return -ENOTSUPP; | |
1117 | ||
1118 | if (netif_running(ndev)) { | |
1119 | (void)hns_nic_net_stop(ndev); | |
1120 | msleep(100); | |
1121 | ||
1122 | ret = h->dev->ops->set_mtu(h, new_mtu); | |
1123 | if (ret) | |
1124 | netdev_err(ndev, "set mtu fail, return value %d\n", | |
1125 | ret); | |
1126 | ||
1127 | if (hns_nic_net_open(ndev)) | |
1128 | netdev_err(ndev, "hns net open fail\n"); | |
1129 | } else { | |
1130 | ret = h->dev->ops->set_mtu(h, new_mtu); | |
1131 | } | |
1132 | ||
1133 | if (!ret) | |
1134 | ndev->mtu = new_mtu; | |
1135 | ||
1136 | return ret; | |
1137 | } | |
1138 | ||
1139 | /** | |
1140 | * nic_set_multicast_list - set mutl mac address | |
1141 | * @netdev: net device | |
1142 | * @p: mac address | |
1143 | * | |
1144 | * return void | |
1145 | */ | |
1146 | void hns_set_multicast_list(struct net_device *ndev) | |
1147 | { | |
1148 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1149 | struct hnae_handle *h = priv->ae_handle; | |
1150 | struct netdev_hw_addr *ha = NULL; | |
1151 | ||
1152 | if (!h) { | |
1153 | netdev_err(ndev, "hnae handle is null\n"); | |
1154 | return; | |
1155 | } | |
1156 | ||
1157 | if (h->dev->ops->set_mc_addr) { | |
1158 | netdev_for_each_mc_addr(ha, ndev) | |
1159 | if (h->dev->ops->set_mc_addr(h, ha->addr)) | |
1160 | netdev_err(ndev, "set multicast fail\n"); | |
1161 | } | |
1162 | } | |
1163 | ||
4568637f | 1164 | void hns_nic_set_rx_mode(struct net_device *ndev) |
1165 | { | |
1166 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1167 | struct hnae_handle *h = priv->ae_handle; | |
1168 | ||
1169 | if (h->dev->ops->set_promisc_mode) { | |
1170 | if (ndev->flags & IFF_PROMISC) | |
1171 | h->dev->ops->set_promisc_mode(h, 1); | |
1172 | else | |
1173 | h->dev->ops->set_promisc_mode(h, 0); | |
1174 | } | |
1175 | ||
1176 | hns_set_multicast_list(ndev); | |
1177 | } | |
1178 | ||
b5996f11 | 1179 | struct rtnl_link_stats64 *hns_nic_get_stats64(struct net_device *ndev, |
1180 | struct rtnl_link_stats64 *stats) | |
1181 | { | |
1182 | int idx = 0; | |
1183 | u64 tx_bytes = 0; | |
1184 | u64 rx_bytes = 0; | |
1185 | u64 tx_pkts = 0; | |
1186 | u64 rx_pkts = 0; | |
1187 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1188 | struct hnae_handle *h = priv->ae_handle; | |
1189 | ||
1190 | for (idx = 0; idx < h->q_num; idx++) { | |
1191 | tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes; | |
1192 | tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts; | |
1193 | rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes; | |
1194 | rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts; | |
1195 | } | |
1196 | ||
1197 | stats->tx_bytes = tx_bytes; | |
1198 | stats->tx_packets = tx_pkts; | |
1199 | stats->rx_bytes = rx_bytes; | |
1200 | stats->rx_packets = rx_pkts; | |
1201 | ||
1202 | stats->rx_errors = ndev->stats.rx_errors; | |
1203 | stats->multicast = ndev->stats.multicast; | |
1204 | stats->rx_length_errors = ndev->stats.rx_length_errors; | |
1205 | stats->rx_crc_errors = ndev->stats.rx_crc_errors; | |
1206 | stats->rx_missed_errors = ndev->stats.rx_missed_errors; | |
1207 | ||
1208 | stats->tx_errors = ndev->stats.tx_errors; | |
1209 | stats->rx_dropped = ndev->stats.rx_dropped; | |
1210 | stats->tx_dropped = ndev->stats.tx_dropped; | |
1211 | stats->collisions = ndev->stats.collisions; | |
1212 | stats->rx_over_errors = ndev->stats.rx_over_errors; | |
1213 | stats->rx_frame_errors = ndev->stats.rx_frame_errors; | |
1214 | stats->rx_fifo_errors = ndev->stats.rx_fifo_errors; | |
1215 | stats->tx_aborted_errors = ndev->stats.tx_aborted_errors; | |
1216 | stats->tx_carrier_errors = ndev->stats.tx_carrier_errors; | |
1217 | stats->tx_fifo_errors = ndev->stats.tx_fifo_errors; | |
1218 | stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors; | |
1219 | stats->tx_window_errors = ndev->stats.tx_window_errors; | |
1220 | stats->rx_compressed = ndev->stats.rx_compressed; | |
1221 | stats->tx_compressed = ndev->stats.tx_compressed; | |
1222 | ||
1223 | return stats; | |
1224 | } | |
1225 | ||
1226 | static const struct net_device_ops hns_nic_netdev_ops = { | |
1227 | .ndo_open = hns_nic_net_open, | |
1228 | .ndo_stop = hns_nic_net_stop, | |
1229 | .ndo_start_xmit = hns_nic_net_xmit, | |
1230 | .ndo_tx_timeout = hns_nic_net_timeout, | |
1231 | .ndo_set_mac_address = hns_nic_net_set_mac_address, | |
1232 | .ndo_change_mtu = hns_nic_change_mtu, | |
1233 | .ndo_do_ioctl = hns_nic_do_ioctl, | |
1234 | .ndo_get_stats64 = hns_nic_get_stats64, | |
1235 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1236 | .ndo_poll_controller = hns_nic_poll_controller, | |
1237 | #endif | |
4568637f | 1238 | .ndo_set_rx_mode = hns_nic_set_rx_mode, |
b5996f11 | 1239 | }; |
1240 | ||
1241 | static void hns_nic_update_link_status(struct net_device *netdev) | |
1242 | { | |
1243 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1244 | ||
1245 | struct hnae_handle *h = priv->ae_handle; | |
1246 | int state = 1; | |
1247 | ||
1248 | if (priv->phy) { | |
1249 | if (!genphy_update_link(priv->phy)) | |
1250 | state = priv->phy->link; | |
1251 | else | |
1252 | state = 0; | |
1253 | } | |
1254 | state = state && h->dev->ops->get_status(h); | |
1255 | ||
1256 | if (state != priv->link) { | |
1257 | if (state) { | |
1258 | netif_carrier_on(netdev); | |
1259 | netif_tx_wake_all_queues(netdev); | |
1260 | netdev_info(netdev, "link up\n"); | |
1261 | } else { | |
1262 | netif_carrier_off(netdev); | |
1263 | netdev_info(netdev, "link down\n"); | |
1264 | } | |
1265 | priv->link = state; | |
1266 | } | |
1267 | } | |
1268 | ||
1269 | /* for dumping key regs*/ | |
1270 | static void hns_nic_dump(struct hns_nic_priv *priv) | |
1271 | { | |
1272 | struct hnae_handle *h = priv->ae_handle; | |
1273 | struct hnae_ae_ops *ops = h->dev->ops; | |
1274 | u32 *data, reg_num, i; | |
1275 | ||
1276 | if (ops->get_regs_len && ops->get_regs) { | |
1277 | reg_num = ops->get_regs_len(priv->ae_handle); | |
1278 | reg_num = (reg_num + 3ul) & ~3ul; | |
1279 | data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL); | |
1280 | if (data) { | |
1281 | ops->get_regs(priv->ae_handle, data); | |
1282 | for (i = 0; i < reg_num; i += 4) | |
1283 | pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n", | |
1284 | i, data[i], data[i + 1], | |
1285 | data[i + 2], data[i + 3]); | |
1286 | kfree(data); | |
1287 | } | |
1288 | } | |
1289 | ||
1290 | for (i = 0; i < h->q_num; i++) { | |
1291 | pr_info("tx_queue%d_next_to_clean:%d\n", | |
1292 | i, h->qs[i]->tx_ring.next_to_clean); | |
1293 | pr_info("tx_queue%d_next_to_use:%d\n", | |
1294 | i, h->qs[i]->tx_ring.next_to_use); | |
1295 | pr_info("rx_queue%d_next_to_clean:%d\n", | |
1296 | i, h->qs[i]->rx_ring.next_to_clean); | |
1297 | pr_info("rx_queue%d_next_to_use:%d\n", | |
1298 | i, h->qs[i]->rx_ring.next_to_use); | |
1299 | } | |
1300 | } | |
1301 | ||
1302 | /* for resetting suntask*/ | |
1303 | static void hns_nic_reset_subtask(struct hns_nic_priv *priv) | |
1304 | { | |
1305 | enum hnae_port_type type = priv->ae_handle->port_type; | |
1306 | ||
1307 | if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state)) | |
1308 | return; | |
1309 | clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state); | |
1310 | ||
1311 | /* If we're already down, removing or resetting, just bail */ | |
1312 | if (test_bit(NIC_STATE_DOWN, &priv->state) || | |
1313 | test_bit(NIC_STATE_REMOVING, &priv->state) || | |
1314 | test_bit(NIC_STATE_RESETTING, &priv->state)) | |
1315 | return; | |
1316 | ||
1317 | hns_nic_dump(priv); | |
90a505b9 | 1318 | netdev_info(priv->netdev, "Reset %s port\n", |
1319 | (type == HNAE_PORT_DEBUG ? "debug" : "business")); | |
b5996f11 | 1320 | |
1321 | rtnl_lock(); | |
90a505b9 | 1322 | /* put off any impending NetWatchDogTimeout */ |
1323 | priv->netdev->trans_start = jiffies; | |
1324 | ||
1325 | if (type == HNAE_PORT_DEBUG) | |
b5996f11 | 1326 | hns_nic_net_reinit(priv->netdev); |
b5996f11 | 1327 | rtnl_unlock(); |
1328 | } | |
1329 | ||
1330 | /* for doing service complete*/ | |
1331 | static void hns_nic_service_event_complete(struct hns_nic_priv *priv) | |
1332 | { | |
1333 | assert(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state)); | |
1334 | ||
1335 | smp_mb__before_atomic(); | |
1336 | clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state); | |
1337 | } | |
1338 | ||
1339 | static void hns_nic_service_task(struct work_struct *work) | |
1340 | { | |
1341 | struct hns_nic_priv *priv | |
1342 | = container_of(work, struct hns_nic_priv, service_task); | |
1343 | struct hnae_handle *h = priv->ae_handle; | |
1344 | ||
1345 | hns_nic_update_link_status(priv->netdev); | |
1346 | h->dev->ops->update_led_status(h); | |
1347 | hns_nic_update_stats(priv->netdev); | |
1348 | ||
1349 | hns_nic_reset_subtask(priv); | |
1350 | hns_nic_service_event_complete(priv); | |
1351 | } | |
1352 | ||
1353 | static void hns_nic_task_schedule(struct hns_nic_priv *priv) | |
1354 | { | |
1355 | if (!test_bit(NIC_STATE_DOWN, &priv->state) && | |
1356 | !test_bit(NIC_STATE_REMOVING, &priv->state) && | |
1357 | !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state)) | |
1358 | (void)schedule_work(&priv->service_task); | |
1359 | } | |
1360 | ||
1361 | static void hns_nic_service_timer(unsigned long data) | |
1362 | { | |
1363 | struct hns_nic_priv *priv = (struct hns_nic_priv *)data; | |
1364 | ||
1365 | (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ); | |
1366 | ||
1367 | hns_nic_task_schedule(priv); | |
1368 | } | |
1369 | ||
1370 | /** | |
1371 | * hns_tx_timeout_reset - initiate reset due to Tx timeout | |
1372 | * @priv: driver private struct | |
1373 | **/ | |
1374 | static void hns_tx_timeout_reset(struct hns_nic_priv *priv) | |
1375 | { | |
1376 | /* Do the reset outside of interrupt context */ | |
1377 | if (!test_bit(NIC_STATE_DOWN, &priv->state)) { | |
1378 | set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state); | |
1379 | netdev_warn(priv->netdev, | |
1380 | "initiating reset due to tx timeout(%llu,0x%lx)\n", | |
1381 | priv->tx_timeout_count, priv->state); | |
1382 | priv->tx_timeout_count++; | |
1383 | hns_nic_task_schedule(priv); | |
1384 | } | |
1385 | } | |
1386 | ||
1387 | static int hns_nic_init_ring_data(struct hns_nic_priv *priv) | |
1388 | { | |
1389 | struct hnae_handle *h = priv->ae_handle; | |
1390 | struct hns_nic_ring_data *rd; | |
1391 | int i; | |
1392 | ||
1393 | if (h->q_num > NIC_MAX_Q_PER_VF) { | |
1394 | netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num); | |
1395 | return -EINVAL; | |
1396 | } | |
1397 | ||
1398 | priv->ring_data = kzalloc(h->q_num * sizeof(*priv->ring_data) * 2, | |
1399 | GFP_KERNEL); | |
1400 | if (!priv->ring_data) | |
1401 | return -ENOMEM; | |
1402 | ||
1403 | for (i = 0; i < h->q_num; i++) { | |
1404 | rd = &priv->ring_data[i]; | |
1405 | rd->queue_index = i; | |
1406 | rd->ring = &h->qs[i]->tx_ring; | |
1407 | rd->poll_one = hns_nic_tx_poll_one; | |
1408 | rd->fini_process = hns_nic_tx_fini_pro; | |
1409 | ||
1410 | netif_napi_add(priv->netdev, &rd->napi, | |
1411 | hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM); | |
1412 | rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED; | |
1413 | } | |
1414 | for (i = h->q_num; i < h->q_num * 2; i++) { | |
1415 | rd = &priv->ring_data[i]; | |
1416 | rd->queue_index = i - h->q_num; | |
1417 | rd->ring = &h->qs[i - h->q_num]->rx_ring; | |
1418 | rd->poll_one = hns_nic_rx_poll_one; | |
1419 | rd->ex_process = hns_nic_rx_up_pro; | |
1420 | rd->fini_process = hns_nic_rx_fini_pro; | |
1421 | ||
1422 | netif_napi_add(priv->netdev, &rd->napi, | |
1423 | hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM); | |
1424 | rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED; | |
1425 | } | |
1426 | ||
1427 | return 0; | |
1428 | } | |
1429 | ||
1430 | static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv) | |
1431 | { | |
1432 | struct hnae_handle *h = priv->ae_handle; | |
1433 | int i; | |
1434 | ||
1435 | for (i = 0; i < h->q_num * 2; i++) { | |
1436 | netif_napi_del(&priv->ring_data[i].napi); | |
1437 | if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) { | |
1438 | irq_set_affinity_hint(priv->ring_data[i].ring->irq, | |
1439 | NULL); | |
1440 | free_irq(priv->ring_data[i].ring->irq, | |
1441 | &priv->ring_data[i]); | |
1442 | } | |
1443 | ||
1444 | priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED; | |
1445 | } | |
1446 | kfree(priv->ring_data); | |
1447 | } | |
1448 | ||
1449 | static int hns_nic_try_get_ae(struct net_device *ndev) | |
1450 | { | |
1451 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1452 | struct hnae_handle *h; | |
1453 | int ret; | |
1454 | ||
1455 | h = hnae_get_handle(&priv->netdev->dev, | |
1456 | priv->ae_name, priv->port_id, NULL); | |
1457 | if (IS_ERR_OR_NULL(h)) { | |
1458 | ret = PTR_ERR(h); | |
1459 | dev_dbg(priv->dev, "has not handle, register notifier!\n"); | |
1460 | goto out; | |
1461 | } | |
1462 | priv->ae_handle = h; | |
1463 | ||
1464 | ret = hns_nic_init_phy(ndev, h); | |
1465 | if (ret) { | |
1466 | dev_err(priv->dev, "probe phy device fail!\n"); | |
1467 | goto out_init_phy; | |
1468 | } | |
1469 | ||
1470 | ret = hns_nic_init_ring_data(priv); | |
1471 | if (ret) { | |
1472 | ret = -ENOMEM; | |
1473 | goto out_init_ring_data; | |
1474 | } | |
1475 | ||
1476 | ret = register_netdev(ndev); | |
1477 | if (ret) { | |
1478 | dev_err(priv->dev, "probe register netdev fail!\n"); | |
1479 | goto out_reg_ndev_fail; | |
1480 | } | |
1481 | return 0; | |
1482 | ||
1483 | out_reg_ndev_fail: | |
1484 | hns_nic_uninit_ring_data(priv); | |
1485 | priv->ring_data = NULL; | |
1486 | out_init_phy: | |
1487 | out_init_ring_data: | |
1488 | hnae_put_handle(priv->ae_handle); | |
1489 | priv->ae_handle = NULL; | |
1490 | out: | |
1491 | return ret; | |
1492 | } | |
1493 | ||
1494 | static int hns_nic_notifier_action(struct notifier_block *nb, | |
1495 | unsigned long action, void *data) | |
1496 | { | |
1497 | struct hns_nic_priv *priv = | |
1498 | container_of(nb, struct hns_nic_priv, notifier_block); | |
1499 | ||
1500 | assert(action == HNAE_AE_REGISTER); | |
1501 | ||
1502 | if (!hns_nic_try_get_ae(priv->netdev)) { | |
1503 | hnae_unregister_notifier(&priv->notifier_block); | |
1504 | priv->notifier_block.notifier_call = NULL; | |
1505 | } | |
1506 | return 0; | |
1507 | } | |
1508 | ||
1509 | static int hns_nic_dev_probe(struct platform_device *pdev) | |
1510 | { | |
1511 | struct device *dev = &pdev->dev; | |
1512 | struct net_device *ndev; | |
1513 | struct hns_nic_priv *priv; | |
1514 | struct device_node *node = dev->of_node; | |
1515 | int ret; | |
1516 | ||
1517 | ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF); | |
1518 | if (!ndev) | |
1519 | return -ENOMEM; | |
1520 | ||
1521 | platform_set_drvdata(pdev, ndev); | |
1522 | ||
1523 | priv = netdev_priv(ndev); | |
1524 | priv->dev = dev; | |
1525 | priv->netdev = ndev; | |
1526 | ||
1527 | if (of_device_is_compatible(node, "hisilicon,hns-nic-v2")) | |
1528 | priv->enet_ver = AE_VERSION_2; | |
1529 | else | |
1530 | priv->enet_ver = AE_VERSION_1; | |
1531 | ||
1532 | ret = of_property_read_string(node, "ae-name", &priv->ae_name); | |
1533 | if (ret) | |
1534 | goto out_read_string_fail; | |
1535 | ||
1536 | ret = of_property_read_u32(node, "port-id", &priv->port_id); | |
1537 | if (ret) | |
1538 | goto out_read_string_fail; | |
1539 | ||
1540 | hns_init_mac_addr(ndev); | |
1541 | ||
1542 | ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT; | |
1543 | ndev->priv_flags |= IFF_UNICAST_FLT; | |
1544 | ndev->netdev_ops = &hns_nic_netdev_ops; | |
1545 | hns_ethtool_set_ops(ndev); | |
1546 | ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
1547 | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | | |
1548 | NETIF_F_GRO; | |
1549 | ndev->vlan_features |= | |
1550 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM; | |
1551 | ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO; | |
1552 | ||
1553 | SET_NETDEV_DEV(ndev, dev); | |
1554 | ||
1555 | if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64))) | |
1556 | dev_dbg(dev, "set mask to 64bit\n"); | |
1557 | else | |
1558 | dev_err(dev, "set mask to 32bit fail!\n"); | |
1559 | ||
1560 | /* carrier off reporting is important to ethtool even BEFORE open */ | |
1561 | netif_carrier_off(ndev); | |
1562 | ||
1563 | setup_timer(&priv->service_timer, hns_nic_service_timer, | |
1564 | (unsigned long)priv); | |
1565 | INIT_WORK(&priv->service_task, hns_nic_service_task); | |
1566 | ||
1567 | set_bit(NIC_STATE_SERVICE_INITED, &priv->state); | |
1568 | clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state); | |
1569 | set_bit(NIC_STATE_DOWN, &priv->state); | |
1570 | ||
1571 | if (hns_nic_try_get_ae(priv->netdev)) { | |
1572 | priv->notifier_block.notifier_call = hns_nic_notifier_action; | |
1573 | ret = hnae_register_notifier(&priv->notifier_block); | |
1574 | if (ret) { | |
1575 | dev_err(dev, "register notifier fail!\n"); | |
1576 | goto out_notify_fail; | |
1577 | } | |
1578 | dev_dbg(dev, "has not handle, register notifier!\n"); | |
1579 | } | |
1580 | ||
1581 | return 0; | |
1582 | ||
1583 | out_notify_fail: | |
1584 | (void)cancel_work_sync(&priv->service_task); | |
1585 | out_read_string_fail: | |
1586 | free_netdev(ndev); | |
1587 | return ret; | |
1588 | } | |
1589 | ||
1590 | static int hns_nic_dev_remove(struct platform_device *pdev) | |
1591 | { | |
1592 | struct net_device *ndev = platform_get_drvdata(pdev); | |
1593 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1594 | ||
1595 | if (ndev->reg_state != NETREG_UNINITIALIZED) | |
1596 | unregister_netdev(ndev); | |
1597 | ||
1598 | if (priv->ring_data) | |
1599 | hns_nic_uninit_ring_data(priv); | |
1600 | priv->ring_data = NULL; | |
1601 | ||
1602 | if (priv->phy) | |
1603 | phy_disconnect(priv->phy); | |
1604 | priv->phy = NULL; | |
1605 | ||
1606 | if (!IS_ERR_OR_NULL(priv->ae_handle)) | |
1607 | hnae_put_handle(priv->ae_handle); | |
1608 | priv->ae_handle = NULL; | |
1609 | if (priv->notifier_block.notifier_call) | |
1610 | hnae_unregister_notifier(&priv->notifier_block); | |
1611 | priv->notifier_block.notifier_call = NULL; | |
1612 | ||
1613 | set_bit(NIC_STATE_REMOVING, &priv->state); | |
1614 | (void)cancel_work_sync(&priv->service_task); | |
1615 | ||
1616 | free_netdev(ndev); | |
1617 | return 0; | |
1618 | } | |
1619 | ||
1620 | static const struct of_device_id hns_enet_of_match[] = { | |
1621 | {.compatible = "hisilicon,hns-nic-v1",}, | |
1622 | {.compatible = "hisilicon,hns-nic-v2",}, | |
1623 | {}, | |
1624 | }; | |
1625 | ||
1626 | MODULE_DEVICE_TABLE(of, hns_enet_of_match); | |
1627 | ||
1628 | static struct platform_driver hns_nic_dev_driver = { | |
1629 | .driver = { | |
1630 | .name = "hns-nic", | |
b5996f11 | 1631 | .of_match_table = hns_enet_of_match, |
1632 | }, | |
1633 | .probe = hns_nic_dev_probe, | |
1634 | .remove = hns_nic_dev_remove, | |
1635 | }; | |
1636 | ||
1637 | module_platform_driver(hns_nic_dev_driver); | |
1638 | ||
1639 | MODULE_DESCRIPTION("HISILICON HNS Ethernet driver"); | |
1640 | MODULE_AUTHOR("Hisilicon, Inc."); | |
1641 | MODULE_LICENSE("GPL"); | |
1642 | MODULE_ALIAS("platform:hns-nic"); |