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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 | ||
34 | #define RCB_ERR_PRINT_CYCLE 1000 | |
35 | ||
36 | #define RCB_IRQ_NOT_INITED 0 | |
37 | #define RCB_IRQ_INITED 1 | |
38 | ||
39 | static void fill_desc(struct hnae_ring *ring, void *priv, | |
40 | int size, dma_addr_t dma, int frag_end, | |
41 | int buf_num, enum hns_desc_type type) | |
42 | { | |
43 | struct hnae_desc *desc = &ring->desc[ring->next_to_use]; | |
44 | struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; | |
45 | struct sk_buff *skb; | |
46 | __be16 protocol; | |
47 | u32 ip_offset; | |
48 | u32 asid_bufnum_pid = 0; | |
49 | u32 flag_ipoffset = 0; | |
50 | ||
51 | desc_cb->priv = priv; | |
52 | desc_cb->length = size; | |
53 | desc_cb->dma = dma; | |
54 | desc_cb->type = type; | |
55 | ||
56 | desc->addr = cpu_to_le64(dma); | |
57 | desc->tx.send_size = cpu_to_le16((u16)size); | |
58 | ||
59 | /*config bd buffer end */ | |
60 | flag_ipoffset |= 1 << HNS_TXD_VLD_B; | |
61 | ||
62 | asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S; | |
63 | ||
64 | if (type == DESC_TYPE_SKB) { | |
65 | skb = (struct sk_buff *)priv; | |
66 | ||
67 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
68 | protocol = skb->protocol; | |
69 | ip_offset = ETH_HLEN; | |
70 | ||
71 | /*if it is a SW VLAN check the next protocol*/ | |
72 | if (protocol == htons(ETH_P_8021Q)) { | |
73 | ip_offset += VLAN_HLEN; | |
74 | protocol = vlan_get_protocol(skb); | |
75 | skb->protocol = protocol; | |
76 | } | |
77 | ||
78 | if (skb->protocol == htons(ETH_P_IP)) { | |
79 | flag_ipoffset |= 1 << HNS_TXD_L3CS_B; | |
80 | /* check for tcp/udp header */ | |
81 | flag_ipoffset |= 1 << HNS_TXD_L4CS_B; | |
82 | ||
83 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
84 | /* ipv6 has not l3 cs, check for L4 header */ | |
85 | flag_ipoffset |= 1 << HNS_TXD_L4CS_B; | |
86 | } | |
87 | ||
88 | flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S; | |
89 | } | |
90 | } | |
91 | ||
92 | flag_ipoffset |= frag_end << HNS_TXD_FE_B; | |
93 | ||
94 | desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid); | |
95 | desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset); | |
96 | ||
97 | ring_ptr_move_fw(ring, next_to_use); | |
98 | } | |
99 | ||
100 | static void unfill_desc(struct hnae_ring *ring) | |
101 | { | |
102 | ring_ptr_move_bw(ring, next_to_use); | |
103 | } | |
104 | ||
105 | int hns_nic_net_xmit_hw(struct net_device *ndev, | |
106 | struct sk_buff *skb, | |
107 | struct hns_nic_ring_data *ring_data) | |
108 | { | |
109 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
110 | struct device *dev = priv->dev; | |
111 | struct hnae_ring *ring = ring_data->ring; | |
112 | struct netdev_queue *dev_queue; | |
113 | struct skb_frag_struct *frag; | |
114 | int buf_num; | |
115 | dma_addr_t dma; | |
116 | int size, next_to_use; | |
117 | int i, j; | |
118 | struct sk_buff *new_skb; | |
119 | ||
120 | assert(ring->max_desc_num_per_pkt <= ring->desc_num); | |
121 | ||
122 | /* no. of segments (plus a header) */ | |
123 | buf_num = skb_shinfo(skb)->nr_frags + 1; | |
124 | ||
125 | if (unlikely(buf_num > ring->max_desc_num_per_pkt)) { | |
126 | if (ring_space(ring) < 1) { | |
127 | ring->stats.tx_busy++; | |
128 | goto out_net_tx_busy; | |
129 | } | |
130 | ||
131 | new_skb = skb_copy(skb, GFP_ATOMIC); | |
132 | if (!new_skb) { | |
133 | ring->stats.sw_err_cnt++; | |
134 | netdev_err(ndev, "no memory to xmit!\n"); | |
135 | goto out_err_tx_ok; | |
136 | } | |
137 | ||
138 | dev_kfree_skb_any(skb); | |
139 | skb = new_skb; | |
140 | buf_num = 1; | |
141 | assert(skb_shinfo(skb)->nr_frags == 1); | |
142 | } else if (buf_num > ring_space(ring)) { | |
143 | ring->stats.tx_busy++; | |
144 | goto out_net_tx_busy; | |
145 | } | |
146 | next_to_use = ring->next_to_use; | |
147 | ||
148 | /* fill the first part */ | |
149 | size = skb_headlen(skb); | |
150 | dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE); | |
151 | if (dma_mapping_error(dev, dma)) { | |
152 | netdev_err(ndev, "TX head DMA map failed\n"); | |
153 | ring->stats.sw_err_cnt++; | |
154 | goto out_err_tx_ok; | |
155 | } | |
156 | fill_desc(ring, skb, size, dma, buf_num == 1 ? 1 : 0, buf_num, | |
157 | DESC_TYPE_SKB); | |
158 | ||
159 | /* fill the fragments */ | |
160 | for (i = 1; i < buf_num; i++) { | |
161 | frag = &skb_shinfo(skb)->frags[i - 1]; | |
162 | size = skb_frag_size(frag); | |
163 | dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE); | |
164 | if (dma_mapping_error(dev, dma)) { | |
165 | netdev_err(ndev, "TX frag(%d) DMA map failed\n", i); | |
166 | ring->stats.sw_err_cnt++; | |
167 | goto out_map_frag_fail; | |
168 | } | |
169 | fill_desc(ring, skb_frag_page(frag), size, dma, | |
170 | buf_num - 1 == i ? 1 : 0, buf_num, DESC_TYPE_PAGE); | |
171 | } | |
172 | ||
173 | /*complete translate all packets*/ | |
174 | dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping); | |
175 | netdev_tx_sent_queue(dev_queue, skb->len); | |
176 | ||
177 | wmb(); /* commit all data before submit */ | |
178 | assert(skb->queue_mapping < priv->ae_handle->q_num); | |
179 | hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num); | |
180 | ring->stats.tx_pkts++; | |
181 | ring->stats.tx_bytes += skb->len; | |
182 | ||
183 | return NETDEV_TX_OK; | |
184 | ||
185 | out_map_frag_fail: | |
186 | ||
187 | for (j = i - 1; j > 0; j--) { | |
188 | unfill_desc(ring); | |
189 | next_to_use = ring->next_to_use; | |
190 | dma_unmap_page(dev, ring->desc_cb[next_to_use].dma, | |
191 | ring->desc_cb[next_to_use].length, | |
192 | DMA_TO_DEVICE); | |
193 | } | |
194 | ||
195 | unfill_desc(ring); | |
196 | next_to_use = ring->next_to_use; | |
197 | dma_unmap_single(dev, ring->desc_cb[next_to_use].dma, | |
198 | ring->desc_cb[next_to_use].length, DMA_TO_DEVICE); | |
199 | ||
200 | out_err_tx_ok: | |
201 | ||
202 | dev_kfree_skb_any(skb); | |
203 | return NETDEV_TX_OK; | |
204 | ||
205 | out_net_tx_busy: | |
206 | ||
207 | netif_stop_subqueue(ndev, skb->queue_mapping); | |
208 | ||
209 | /* Herbert's original patch had: | |
210 | * smp_mb__after_netif_stop_queue(); | |
211 | * but since that doesn't exist yet, just open code it. | |
212 | */ | |
213 | smp_mb(); | |
214 | return NETDEV_TX_BUSY; | |
215 | } | |
216 | ||
217 | /** | |
218 | * hns_nic_get_headlen - determine size of header for RSC/LRO/GRO/FCOE | |
219 | * @data: pointer to the start of the headers | |
220 | * @max: total length of section to find headers in | |
221 | * | |
222 | * This function is meant to determine the length of headers that will | |
223 | * be recognized by hardware for LRO, GRO, and RSC offloads. The main | |
224 | * motivation of doing this is to only perform one pull for IPv4 TCP | |
225 | * packets so that we can do basic things like calculating the gso_size | |
226 | * based on the average data per packet. | |
227 | **/ | |
228 | static unsigned int hns_nic_get_headlen(unsigned char *data, u32 flag, | |
229 | unsigned int max_size) | |
230 | { | |
231 | unsigned char *network; | |
232 | u8 hlen; | |
233 | ||
234 | /* this should never happen, but better safe than sorry */ | |
235 | if (max_size < ETH_HLEN) | |
236 | return max_size; | |
237 | ||
238 | /* initialize network frame pointer */ | |
239 | network = data; | |
240 | ||
241 | /* set first protocol and move network header forward */ | |
242 | network += ETH_HLEN; | |
243 | ||
244 | /* handle any vlan tag if present */ | |
245 | if (hnae_get_field(flag, HNS_RXD_VLAN_M, HNS_RXD_VLAN_S) | |
246 | == HNS_RX_FLAG_VLAN_PRESENT) { | |
247 | if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN)) | |
248 | return max_size; | |
249 | ||
250 | network += VLAN_HLEN; | |
251 | } | |
252 | ||
253 | /* handle L3 protocols */ | |
254 | if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S) | |
255 | == HNS_RX_FLAG_L3ID_IPV4) { | |
256 | if ((typeof(max_size))(network - data) > | |
257 | (max_size - sizeof(struct iphdr))) | |
258 | return max_size; | |
259 | ||
260 | /* access ihl as a u8 to avoid unaligned access on ia64 */ | |
261 | hlen = (network[0] & 0x0F) << 2; | |
262 | ||
263 | /* verify hlen meets minimum size requirements */ | |
264 | if (hlen < sizeof(struct iphdr)) | |
265 | return network - data; | |
266 | ||
267 | /* record next protocol if header is present */ | |
268 | } else if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S) | |
269 | == HNS_RX_FLAG_L3ID_IPV6) { | |
270 | if ((typeof(max_size))(network - data) > | |
271 | (max_size - sizeof(struct ipv6hdr))) | |
272 | return max_size; | |
273 | ||
274 | /* record next protocol */ | |
275 | hlen = sizeof(struct ipv6hdr); | |
276 | } else { | |
277 | return network - data; | |
278 | } | |
279 | ||
280 | /* relocate pointer to start of L4 header */ | |
281 | network += hlen; | |
282 | ||
283 | /* finally sort out TCP/UDP */ | |
284 | if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S) | |
285 | == HNS_RX_FLAG_L4ID_TCP) { | |
286 | if ((typeof(max_size))(network - data) > | |
287 | (max_size - sizeof(struct tcphdr))) | |
288 | return max_size; | |
289 | ||
290 | /* access doff as a u8 to avoid unaligned access on ia64 */ | |
291 | hlen = (network[12] & 0xF0) >> 2; | |
292 | ||
293 | /* verify hlen meets minimum size requirements */ | |
294 | if (hlen < sizeof(struct tcphdr)) | |
295 | return network - data; | |
296 | ||
297 | network += hlen; | |
298 | } else if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S) | |
299 | == HNS_RX_FLAG_L4ID_UDP) { | |
300 | if ((typeof(max_size))(network - data) > | |
301 | (max_size - sizeof(struct udphdr))) | |
302 | return max_size; | |
303 | ||
304 | network += sizeof(struct udphdr); | |
305 | } | |
306 | ||
307 | /* If everything has gone correctly network should be the | |
308 | * data section of the packet and will be the end of the header. | |
309 | * If not then it probably represents the end of the last recognized | |
310 | * header. | |
311 | */ | |
312 | if ((typeof(max_size))(network - data) < max_size) | |
313 | return network - data; | |
314 | else | |
315 | return max_size; | |
316 | } | |
317 | ||
318 | static void | |
319 | hns_nic_reuse_page(struct hnae_desc_cb *desc_cb, int tsize, int last_offset) | |
320 | { | |
321 | /* avoid re-using remote pages,flag default unreuse */ | |
322 | if (likely(page_to_nid(desc_cb->priv) == numa_node_id())) { | |
323 | /* move offset up to the next cache line */ | |
324 | desc_cb->page_offset += tsize; | |
325 | ||
326 | if (desc_cb->page_offset <= last_offset) { | |
327 | desc_cb->reuse_flag = 1; | |
328 | /* bump ref count on page before it is given*/ | |
329 | get_page(desc_cb->priv); | |
330 | } | |
331 | } | |
332 | } | |
333 | ||
334 | static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data, | |
335 | struct sk_buff **out_skb, int *out_bnum) | |
336 | { | |
337 | struct hnae_ring *ring = ring_data->ring; | |
338 | struct net_device *ndev = ring_data->napi.dev; | |
339 | struct sk_buff *skb; | |
340 | struct hnae_desc *desc; | |
341 | struct hnae_desc_cb *desc_cb; | |
342 | unsigned char *va; | |
343 | int bnum, length, size, i, truesize, last_offset; | |
344 | int pull_len; | |
345 | u32 bnum_flag; | |
346 | ||
347 | last_offset = hnae_page_size(ring) - hnae_buf_size(ring); | |
348 | desc = &ring->desc[ring->next_to_clean]; | |
349 | desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
350 | length = le16_to_cpu(desc->rx.pkt_len); | |
351 | bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag); | |
352 | bnum = hnae_get_field(bnum_flag, HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S); | |
353 | *out_bnum = bnum; | |
354 | va = (unsigned char *)desc_cb->buf + desc_cb->page_offset; | |
355 | ||
356 | skb = *out_skb = napi_alloc_skb(&ring_data->napi, HNS_RX_HEAD_SIZE); | |
357 | if (unlikely(!skb)) { | |
358 | netdev_err(ndev, "alloc rx skb fail\n"); | |
359 | ring->stats.sw_err_cnt++; | |
360 | return -ENOMEM; | |
361 | } | |
362 | ||
363 | if (length <= HNS_RX_HEAD_SIZE) { | |
364 | memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long))); | |
365 | ||
366 | /* we can reuse buffer as-is, just make sure it is local */ | |
367 | if (likely(page_to_nid(desc_cb->priv) == numa_node_id())) | |
368 | desc_cb->reuse_flag = 1; | |
369 | else /* this page cannot be reused so discard it */ | |
370 | put_page(desc_cb->priv); | |
371 | ||
372 | ring_ptr_move_fw(ring, next_to_clean); | |
373 | ||
374 | if (unlikely(bnum != 1)) { /* check err*/ | |
375 | *out_bnum = 1; | |
376 | goto out_bnum_err; | |
377 | } | |
378 | } else { | |
379 | ring->stats.seg_pkt_cnt++; | |
380 | ||
381 | pull_len = hns_nic_get_headlen(va, bnum_flag, HNS_RX_HEAD_SIZE); | |
382 | memcpy(__skb_put(skb, pull_len), va, | |
383 | ALIGN(pull_len, sizeof(long))); | |
384 | ||
385 | size = le16_to_cpu(desc->rx.size); | |
386 | truesize = ALIGN(size, L1_CACHE_BYTES); | |
387 | skb_add_rx_frag(skb, 0, desc_cb->priv, | |
388 | desc_cb->page_offset + pull_len, | |
389 | size - pull_len, truesize - pull_len); | |
390 | ||
391 | hns_nic_reuse_page(desc_cb, truesize, last_offset); | |
392 | ring_ptr_move_fw(ring, next_to_clean); | |
393 | ||
394 | if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/ | |
395 | *out_bnum = 1; | |
396 | goto out_bnum_err; | |
397 | } | |
398 | for (i = 1; i < bnum; i++) { | |
399 | desc = &ring->desc[ring->next_to_clean]; | |
400 | desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
401 | size = le16_to_cpu(desc->rx.size); | |
402 | truesize = ALIGN(size, L1_CACHE_BYTES); | |
403 | skb_add_rx_frag(skb, i, desc_cb->priv, | |
404 | desc_cb->page_offset, | |
405 | size, truesize); | |
406 | ||
407 | hns_nic_reuse_page(desc_cb, truesize, last_offset); | |
408 | ring_ptr_move_fw(ring, next_to_clean); | |
409 | } | |
410 | } | |
411 | ||
412 | /* check except process, free skb and jump the desc */ | |
413 | if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) { | |
414 | out_bnum_err: | |
415 | *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/ | |
416 | netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n", | |
417 | bnum, ring->max_desc_num_per_pkt, | |
418 | length, (int)MAX_SKB_FRAGS, | |
419 | ((u64 *)desc)[0], ((u64 *)desc)[1]); | |
420 | ring->stats.err_bd_num++; | |
421 | dev_kfree_skb_any(skb); | |
422 | return -EDOM; | |
423 | } | |
424 | ||
425 | bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag); | |
426 | ||
427 | if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) { | |
428 | netdev_err(ndev, "no valid bd,%016llx,%016llx\n", | |
429 | ((u64 *)desc)[0], ((u64 *)desc)[1]); | |
430 | ring->stats.non_vld_descs++; | |
431 | dev_kfree_skb_any(skb); | |
432 | return -EINVAL; | |
433 | } | |
434 | ||
435 | if (unlikely((!desc->rx.pkt_len) || | |
436 | hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) { | |
437 | if (!(ring->stats.err_pkt_len % RCB_ERR_PRINT_CYCLE)) | |
438 | netdev_dbg(ndev, | |
439 | "pkt_len(%u),drop(%u),%#llx,%#llx\n", | |
440 | le16_to_cpu(desc->rx.pkt_len), | |
441 | hnae_get_bit(bnum_flag, HNS_RXD_DROP_B), | |
442 | ((u64 *)desc)[0], ((u64 *)desc)[1]); | |
443 | ring->stats.err_pkt_len++; | |
444 | dev_kfree_skb_any(skb); | |
445 | return -EFAULT; | |
446 | } | |
447 | ||
448 | if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) { | |
449 | if (!(ring->stats.l2_err % RCB_ERR_PRINT_CYCLE)) | |
450 | netdev_dbg(ndev, "L2 check err,%#llx,%#llx\n", | |
451 | ((u64 *)desc)[0], ((u64 *)desc)[1]); | |
452 | ring->stats.l2_err++; | |
453 | dev_kfree_skb_any(skb); | |
454 | return -EFAULT; | |
455 | } | |
456 | ||
457 | ring->stats.rx_pkts++; | |
458 | ring->stats.rx_bytes += skb->len; | |
459 | ||
460 | if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L3E_B) || | |
461 | hnae_get_bit(bnum_flag, HNS_RXD_L4E_B))) { | |
462 | if (!(ring->stats.l3l4_csum_err % RCB_ERR_PRINT_CYCLE)) | |
463 | netdev_dbg(ndev, | |
464 | "check err(%#x),%#llx,%#llx\n", | |
465 | hnae_get_bit(bnum_flag, HNS_RXD_L3E_B) | | |
466 | hnae_get_bit(bnum_flag, HNS_RXD_L4E_B), | |
467 | ((u64 *)desc)[0], ((u64 *)desc)[1]); | |
468 | ring->stats.l3l4_csum_err++; | |
469 | return 0; | |
470 | } | |
471 | ||
472 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
473 | ||
474 | return 0; | |
475 | } | |
476 | ||
477 | static void | |
478 | hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count) | |
479 | { | |
480 | int i, ret; | |
481 | struct hnae_desc_cb res_cbs; | |
482 | struct hnae_desc_cb *desc_cb; | |
483 | struct hnae_ring *ring = ring_data->ring; | |
484 | struct net_device *ndev = ring_data->napi.dev; | |
485 | ||
486 | for (i = 0; i < cleand_count; i++) { | |
487 | desc_cb = &ring->desc_cb[ring->next_to_use]; | |
488 | if (desc_cb->reuse_flag) { | |
489 | ring->stats.reuse_pg_cnt++; | |
490 | hnae_reuse_buffer(ring, ring->next_to_use); | |
491 | } else { | |
492 | ret = hnae_reserve_buffer_map(ring, &res_cbs); | |
493 | if (ret) { | |
494 | ring->stats.sw_err_cnt++; | |
495 | netdev_err(ndev, "hnae reserve buffer map failed.\n"); | |
496 | break; | |
497 | } | |
498 | hnae_replace_buffer(ring, ring->next_to_use, &res_cbs); | |
499 | } | |
500 | ||
501 | ring_ptr_move_fw(ring, next_to_use); | |
502 | } | |
503 | ||
504 | wmb(); /* make all data has been write before submit */ | |
505 | writel_relaxed(i, ring->io_base + RCB_REG_HEAD); | |
506 | } | |
507 | ||
508 | /* return error number for error or number of desc left to take | |
509 | */ | |
510 | static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data, | |
511 | struct sk_buff *skb) | |
512 | { | |
513 | struct net_device *ndev = ring_data->napi.dev; | |
514 | ||
515 | skb->protocol = eth_type_trans(skb, ndev); | |
516 | (void)napi_gro_receive(&ring_data->napi, skb); | |
517 | ndev->last_rx = jiffies; | |
518 | } | |
519 | ||
520 | static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data, | |
521 | int budget, void *v) | |
522 | { | |
523 | struct hnae_ring *ring = ring_data->ring; | |
524 | struct sk_buff *skb; | |
525 | int num, bnum, ex_num; | |
526 | #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16 | |
527 | int recv_pkts, recv_bds, clean_count, err; | |
528 | ||
529 | num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); | |
530 | rmb(); /* make sure num taken effect before the other data is touched */ | |
531 | ||
532 | recv_pkts = 0, recv_bds = 0, clean_count = 0; | |
533 | recv: | |
534 | while (recv_pkts < budget && recv_bds < num) { | |
535 | /* reuse or realloc buffers*/ | |
536 | if (clean_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) { | |
537 | hns_nic_alloc_rx_buffers(ring_data, clean_count); | |
538 | clean_count = 0; | |
539 | } | |
540 | ||
541 | /* poll one pkg*/ | |
542 | err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum); | |
543 | if (unlikely(!skb)) /* this fault cannot be repaired */ | |
544 | break; | |
545 | ||
546 | recv_bds += bnum; | |
547 | clean_count += bnum; | |
548 | if (unlikely(err)) { /* do jump the err */ | |
549 | recv_pkts++; | |
550 | continue; | |
551 | } | |
552 | ||
553 | /* do update ip stack process*/ | |
554 | ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)( | |
555 | ring_data, skb); | |
556 | recv_pkts++; | |
557 | } | |
558 | ||
559 | /* make all data has been write before submit */ | |
560 | if (clean_count > 0) { | |
561 | hns_nic_alloc_rx_buffers(ring_data, clean_count); | |
562 | clean_count = 0; | |
563 | } | |
564 | ||
565 | if (recv_pkts < budget) { | |
566 | ex_num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); | |
567 | rmb(); /*complete read rx ring bd number*/ | |
568 | if (ex_num > 0) { | |
569 | num += ex_num; | |
570 | goto recv; | |
571 | } | |
572 | } | |
573 | ||
574 | return recv_pkts; | |
575 | } | |
576 | ||
577 | static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data) | |
578 | { | |
579 | struct hnae_ring *ring = ring_data->ring; | |
580 | int num = 0; | |
581 | ||
582 | /* for hardware bug fixed */ | |
583 | num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); | |
584 | ||
585 | if (num > 0) { | |
586 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( | |
587 | ring_data->ring, 1); | |
588 | ||
589 | napi_schedule(&ring_data->napi); | |
590 | } | |
591 | } | |
592 | ||
593 | static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring, | |
594 | int *bytes, int *pkts) | |
595 | { | |
596 | struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
597 | ||
598 | (*pkts) += (desc_cb->type == DESC_TYPE_SKB); | |
599 | (*bytes) += desc_cb->length; | |
600 | /* desc_cb will be cleaned, after hnae_free_buffer_detach*/ | |
601 | hnae_free_buffer_detach(ring, ring->next_to_clean); | |
602 | ||
603 | ring_ptr_move_fw(ring, next_to_clean); | |
604 | } | |
605 | ||
606 | static int is_valid_clean_head(struct hnae_ring *ring, int h) | |
607 | { | |
608 | int u = ring->next_to_use; | |
609 | int c = ring->next_to_clean; | |
610 | ||
611 | if (unlikely(h > ring->desc_num)) | |
612 | return 0; | |
613 | ||
614 | assert(u > 0 && u < ring->desc_num); | |
615 | assert(c > 0 && c < ring->desc_num); | |
616 | assert(u != c && h != c); /* must be checked before call this func */ | |
617 | ||
618 | return u > c ? (h > c && h <= u) : (h > c || h <= u); | |
619 | } | |
620 | ||
621 | /* netif_tx_lock will turn down the performance, set only when necessary */ | |
622 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
623 | #define NETIF_TX_LOCK(ndev) netif_tx_lock(ndev) | |
624 | #define NETIF_TX_UNLOCK(ndev) netif_tx_unlock(ndev) | |
625 | #else | |
626 | #define NETIF_TX_LOCK(ndev) | |
627 | #define NETIF_TX_UNLOCK(ndev) | |
628 | #endif | |
629 | /* reclaim all desc in one budget | |
630 | * return error or number of desc left | |
631 | */ | |
632 | static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data, | |
633 | int budget, void *v) | |
634 | { | |
635 | struct hnae_ring *ring = ring_data->ring; | |
636 | struct net_device *ndev = ring_data->napi.dev; | |
637 | struct netdev_queue *dev_queue; | |
638 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
639 | int head; | |
640 | int bytes, pkts; | |
641 | ||
642 | NETIF_TX_LOCK(ndev); | |
643 | ||
644 | head = readl_relaxed(ring->io_base + RCB_REG_HEAD); | |
645 | rmb(); /* make sure head is ready before touch any data */ | |
646 | ||
647 | if (is_ring_empty(ring) || head == ring->next_to_clean) { | |
648 | NETIF_TX_UNLOCK(ndev); | |
649 | return 0; /* no data to poll */ | |
650 | } | |
651 | ||
652 | if (!is_valid_clean_head(ring, head)) { | |
653 | netdev_err(ndev, "wrong head (%d, %d-%d)\n", head, | |
654 | ring->next_to_use, ring->next_to_clean); | |
655 | ring->stats.io_err_cnt++; | |
656 | NETIF_TX_UNLOCK(ndev); | |
657 | return -EIO; | |
658 | } | |
659 | ||
660 | bytes = 0; | |
661 | pkts = 0; | |
662 | while (head != ring->next_to_clean) | |
663 | hns_nic_reclaim_one_desc(ring, &bytes, &pkts); | |
664 | ||
665 | NETIF_TX_UNLOCK(ndev); | |
666 | ||
667 | dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index); | |
668 | netdev_tx_completed_queue(dev_queue, pkts, bytes); | |
669 | ||
670 | if (unlikely(pkts && netif_carrier_ok(ndev) && | |
671 | (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) { | |
672 | /* Make sure that anybody stopping the queue after this | |
673 | * sees the new next_to_clean. | |
674 | */ | |
675 | smp_mb(); | |
676 | if (netif_tx_queue_stopped(dev_queue) && | |
677 | !test_bit(NIC_STATE_DOWN, &priv->state)) { | |
678 | netif_tx_wake_queue(dev_queue); | |
679 | ring->stats.restart_queue++; | |
680 | } | |
681 | } | |
682 | return 0; | |
683 | } | |
684 | ||
685 | static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data) | |
686 | { | |
687 | struct hnae_ring *ring = ring_data->ring; | |
688 | int head = ring->next_to_clean; | |
689 | ||
690 | /* for hardware bug fixed */ | |
691 | head = readl_relaxed(ring->io_base + RCB_REG_HEAD); | |
692 | ||
693 | if (head != ring->next_to_clean) { | |
694 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( | |
695 | ring_data->ring, 1); | |
696 | ||
697 | napi_schedule(&ring_data->napi); | |
698 | } | |
699 | } | |
700 | ||
701 | static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data) | |
702 | { | |
703 | struct hnae_ring *ring = ring_data->ring; | |
704 | struct net_device *ndev = ring_data->napi.dev; | |
705 | struct netdev_queue *dev_queue; | |
706 | int head; | |
707 | int bytes, pkts; | |
708 | ||
709 | NETIF_TX_LOCK(ndev); | |
710 | ||
711 | head = ring->next_to_use; /* ntu :soft setted ring position*/ | |
712 | bytes = 0; | |
713 | pkts = 0; | |
714 | while (head != ring->next_to_clean) | |
715 | hns_nic_reclaim_one_desc(ring, &bytes, &pkts); | |
716 | ||
717 | NETIF_TX_UNLOCK(ndev); | |
718 | ||
719 | dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index); | |
720 | netdev_tx_reset_queue(dev_queue); | |
721 | } | |
722 | ||
723 | static int hns_nic_common_poll(struct napi_struct *napi, int budget) | |
724 | { | |
725 | struct hns_nic_ring_data *ring_data = | |
726 | container_of(napi, struct hns_nic_ring_data, napi); | |
727 | int clean_complete = ring_data->poll_one( | |
728 | ring_data, budget, ring_data->ex_process); | |
729 | ||
730 | if (clean_complete >= 0 && clean_complete < budget) { | |
731 | napi_complete(napi); | |
732 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( | |
733 | ring_data->ring, 0); | |
734 | ||
735 | ring_data->fini_process(ring_data); | |
736 | } | |
737 | ||
738 | return clean_complete; | |
739 | } | |
740 | ||
741 | static irqreturn_t hns_irq_handle(int irq, void *dev) | |
742 | { | |
743 | struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev; | |
744 | ||
745 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( | |
746 | ring_data->ring, 1); | |
747 | napi_schedule(&ring_data->napi); | |
748 | ||
749 | return IRQ_HANDLED; | |
750 | } | |
751 | ||
752 | /** | |
753 | *hns_nic_adjust_link - adjust net work mode by the phy stat or new param | |
754 | *@ndev: net device | |
755 | */ | |
756 | static void hns_nic_adjust_link(struct net_device *ndev) | |
757 | { | |
758 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
759 | struct hnae_handle *h = priv->ae_handle; | |
760 | ||
761 | h->dev->ops->adjust_link(h, ndev->phydev->speed, ndev->phydev->duplex); | |
762 | } | |
763 | ||
764 | /** | |
765 | *hns_nic_init_phy - init phy | |
766 | *@ndev: net device | |
767 | *@h: ae handle | |
768 | * Return 0 on success, negative on failure | |
769 | */ | |
770 | int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h) | |
771 | { | |
772 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
773 | struct phy_device *phy_dev = NULL; | |
774 | ||
775 | if (!h->phy_node) | |
776 | return 0; | |
777 | ||
778 | if (h->phy_if != PHY_INTERFACE_MODE_XGMII) | |
779 | phy_dev = of_phy_connect(ndev, h->phy_node, | |
780 | hns_nic_adjust_link, 0, h->phy_if); | |
781 | else | |
782 | phy_dev = of_phy_attach(ndev, h->phy_node, 0, h->phy_if); | |
783 | ||
784 | if (unlikely(!phy_dev) || IS_ERR(phy_dev)) | |
785 | return !phy_dev ? -ENODEV : PTR_ERR(phy_dev); | |
786 | ||
787 | phy_dev->supported &= h->if_support; | |
788 | phy_dev->advertising = phy_dev->supported; | |
789 | ||
790 | if (h->phy_if == PHY_INTERFACE_MODE_XGMII) | |
791 | phy_dev->autoneg = false; | |
792 | ||
793 | priv->phy = phy_dev; | |
794 | ||
795 | return 0; | |
796 | } | |
797 | ||
798 | static int hns_nic_ring_open(struct net_device *netdev, int idx) | |
799 | { | |
800 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
801 | struct hnae_handle *h = priv->ae_handle; | |
802 | ||
803 | napi_enable(&priv->ring_data[idx].napi); | |
804 | ||
805 | enable_irq(priv->ring_data[idx].ring->irq); | |
806 | h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0); | |
807 | ||
808 | return 0; | |
809 | } | |
810 | ||
811 | static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p) | |
812 | { | |
813 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
814 | struct hnae_handle *h = priv->ae_handle; | |
815 | struct sockaddr *mac_addr = p; | |
816 | int ret; | |
817 | ||
818 | if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data)) | |
819 | return -EADDRNOTAVAIL; | |
820 | ||
821 | ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data); | |
822 | if (ret) { | |
823 | netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret); | |
824 | return ret; | |
825 | } | |
826 | ||
827 | memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len); | |
828 | ||
829 | return 0; | |
830 | } | |
831 | ||
832 | void hns_nic_update_stats(struct net_device *netdev) | |
833 | { | |
834 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
835 | struct hnae_handle *h = priv->ae_handle; | |
836 | ||
837 | h->dev->ops->update_stats(h, &netdev->stats); | |
838 | } | |
839 | ||
840 | /* set mac addr if it is configed. or leave it to the AE driver */ | |
841 | static void hns_init_mac_addr(struct net_device *ndev) | |
842 | { | |
843 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
844 | struct device_node *node = priv->dev->of_node; | |
845 | const void *mac_addr_temp; | |
846 | ||
847 | mac_addr_temp = of_get_mac_address(node); | |
848 | if (mac_addr_temp && is_valid_ether_addr(mac_addr_temp)) { | |
849 | memcpy(ndev->dev_addr, mac_addr_temp, ndev->addr_len); | |
850 | } else { | |
851 | eth_hw_addr_random(ndev); | |
852 | dev_warn(priv->dev, "No valid mac, use random mac %pM", | |
853 | ndev->dev_addr); | |
854 | } | |
855 | } | |
856 | ||
857 | static void hns_nic_ring_close(struct net_device *netdev, int idx) | |
858 | { | |
859 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
860 | struct hnae_handle *h = priv->ae_handle; | |
861 | ||
862 | h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1); | |
863 | disable_irq(priv->ring_data[idx].ring->irq); | |
864 | ||
865 | napi_disable(&priv->ring_data[idx].napi); | |
866 | } | |
867 | ||
868 | static int hns_nic_init_irq(struct hns_nic_priv *priv) | |
869 | { | |
870 | struct hnae_handle *h = priv->ae_handle; | |
871 | struct hns_nic_ring_data *rd; | |
872 | int i; | |
873 | int ret; | |
874 | int cpu; | |
875 | cpumask_t mask; | |
876 | ||
877 | for (i = 0; i < h->q_num * 2; i++) { | |
878 | rd = &priv->ring_data[i]; | |
879 | ||
880 | if (rd->ring->irq_init_flag == RCB_IRQ_INITED) | |
881 | break; | |
882 | ||
883 | snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN, | |
884 | "%s-%s%d", priv->netdev->name, | |
885 | (i < h->q_num ? "tx" : "rx"), rd->queue_index); | |
886 | ||
887 | rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0'; | |
888 | ||
889 | ret = request_irq(rd->ring->irq, | |
890 | hns_irq_handle, 0, rd->ring->ring_name, rd); | |
891 | if (ret) { | |
892 | netdev_err(priv->netdev, "request irq(%d) fail\n", | |
893 | rd->ring->irq); | |
894 | return ret; | |
895 | } | |
896 | disable_irq(rd->ring->irq); | |
897 | rd->ring->irq_init_flag = RCB_IRQ_INITED; | |
898 | ||
899 | /*set cpu affinity*/ | |
900 | if (cpu_online(rd->queue_index)) { | |
901 | cpumask_clear(&mask); | |
902 | cpu = rd->queue_index; | |
903 | cpumask_set_cpu(cpu, &mask); | |
904 | irq_set_affinity_hint(rd->ring->irq, &mask); | |
905 | } | |
906 | } | |
907 | ||
908 | return 0; | |
909 | } | |
910 | ||
911 | static int hns_nic_net_up(struct net_device *ndev) | |
912 | { | |
913 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
914 | struct hnae_handle *h = priv->ae_handle; | |
915 | int i, j, k; | |
916 | int ret; | |
917 | ||
918 | ret = hns_nic_init_irq(priv); | |
919 | if (ret != 0) { | |
920 | netdev_err(ndev, "hns init irq failed! ret=%d\n", ret); | |
921 | return ret; | |
922 | } | |
923 | ||
924 | for (i = 0; i < h->q_num * 2; i++) { | |
925 | ret = hns_nic_ring_open(ndev, i); | |
926 | if (ret) | |
927 | goto out_has_some_queues; | |
928 | } | |
929 | ||
930 | for (k = 0; k < h->q_num; k++) | |
931 | h->dev->ops->toggle_queue_status(h->qs[k], 1); | |
932 | ||
933 | ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr); | |
934 | if (ret) | |
935 | goto out_set_mac_addr_err; | |
936 | ||
937 | ret = h->dev->ops->start ? h->dev->ops->start(h) : 0; | |
938 | if (ret) | |
939 | goto out_start_err; | |
940 | ||
941 | if (priv->phy) | |
942 | phy_start(priv->phy); | |
943 | ||
944 | clear_bit(NIC_STATE_DOWN, &priv->state); | |
945 | (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ); | |
946 | ||
947 | return 0; | |
948 | ||
949 | out_start_err: | |
950 | netif_stop_queue(ndev); | |
951 | out_set_mac_addr_err: | |
952 | for (k = 0; k < h->q_num; k++) | |
953 | h->dev->ops->toggle_queue_status(h->qs[k], 0); | |
954 | out_has_some_queues: | |
955 | for (j = i - 1; j >= 0; j--) | |
956 | hns_nic_ring_close(ndev, j); | |
957 | ||
958 | set_bit(NIC_STATE_DOWN, &priv->state); | |
959 | ||
960 | return ret; | |
961 | } | |
962 | ||
963 | static void hns_nic_net_down(struct net_device *ndev) | |
964 | { | |
965 | int i; | |
966 | struct hnae_ae_ops *ops; | |
967 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
968 | ||
969 | if (test_and_set_bit(NIC_STATE_DOWN, &priv->state)) | |
970 | return; | |
971 | ||
972 | (void)del_timer_sync(&priv->service_timer); | |
973 | netif_tx_stop_all_queues(ndev); | |
974 | netif_carrier_off(ndev); | |
975 | netif_tx_disable(ndev); | |
976 | priv->link = 0; | |
977 | ||
978 | if (priv->phy) | |
979 | phy_stop(priv->phy); | |
980 | ||
981 | ops = priv->ae_handle->dev->ops; | |
982 | ||
983 | if (ops->stop) | |
984 | ops->stop(priv->ae_handle); | |
985 | ||
986 | netif_tx_stop_all_queues(ndev); | |
987 | ||
988 | for (i = priv->ae_handle->q_num - 1; i >= 0; i--) { | |
989 | hns_nic_ring_close(ndev, i); | |
990 | hns_nic_ring_close(ndev, i + priv->ae_handle->q_num); | |
991 | ||
992 | /* clean tx buffers*/ | |
993 | hns_nic_tx_clr_all_bufs(priv->ring_data + i); | |
994 | } | |
995 | } | |
996 | ||
997 | void hns_nic_net_reset(struct net_device *ndev) | |
998 | { | |
999 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1000 | struct hnae_handle *handle = priv->ae_handle; | |
1001 | ||
1002 | while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state)) | |
1003 | usleep_range(1000, 2000); | |
1004 | ||
1005 | (void)hnae_reinit_handle(handle); | |
1006 | ||
1007 | clear_bit(NIC_STATE_RESETTING, &priv->state); | |
1008 | } | |
1009 | ||
1010 | void hns_nic_net_reinit(struct net_device *netdev) | |
1011 | { | |
1012 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1013 | ||
1014 | priv->netdev->trans_start = jiffies; | |
1015 | while (test_and_set_bit(NIC_STATE_REINITING, &priv->state)) | |
1016 | usleep_range(1000, 2000); | |
1017 | ||
1018 | hns_nic_net_down(netdev); | |
1019 | hns_nic_net_reset(netdev); | |
1020 | (void)hns_nic_net_up(netdev); | |
1021 | clear_bit(NIC_STATE_REINITING, &priv->state); | |
1022 | } | |
1023 | ||
1024 | static int hns_nic_net_open(struct net_device *ndev) | |
1025 | { | |
1026 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1027 | struct hnae_handle *h = priv->ae_handle; | |
1028 | int ret; | |
1029 | ||
1030 | if (test_bit(NIC_STATE_TESTING, &priv->state)) | |
1031 | return -EBUSY; | |
1032 | ||
1033 | priv->link = 0; | |
1034 | netif_carrier_off(ndev); | |
1035 | ||
1036 | ret = netif_set_real_num_tx_queues(ndev, h->q_num); | |
1037 | if (ret < 0) { | |
1038 | netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n", | |
1039 | ret); | |
1040 | return ret; | |
1041 | } | |
1042 | ||
1043 | ret = netif_set_real_num_rx_queues(ndev, h->q_num); | |
1044 | if (ret < 0) { | |
1045 | netdev_err(ndev, | |
1046 | "netif_set_real_num_rx_queues fail, ret=%d!\n", ret); | |
1047 | return ret; | |
1048 | } | |
1049 | ||
1050 | ret = hns_nic_net_up(ndev); | |
1051 | if (ret) { | |
1052 | netdev_err(ndev, | |
1053 | "hns net up fail, ret=%d!\n", ret); | |
1054 | return ret; | |
1055 | } | |
1056 | ||
1057 | return 0; | |
1058 | } | |
1059 | ||
1060 | static int hns_nic_net_stop(struct net_device *ndev) | |
1061 | { | |
1062 | hns_nic_net_down(ndev); | |
1063 | ||
1064 | return 0; | |
1065 | } | |
1066 | ||
1067 | static void hns_tx_timeout_reset(struct hns_nic_priv *priv); | |
1068 | static void hns_nic_net_timeout(struct net_device *ndev) | |
1069 | { | |
1070 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1071 | ||
1072 | hns_tx_timeout_reset(priv); | |
1073 | } | |
1074 | ||
1075 | static int hns_nic_do_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
1076 | int cmd) | |
1077 | { | |
1078 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1079 | struct phy_device *phy_dev = priv->phy; | |
1080 | ||
1081 | if (!netif_running(netdev)) | |
1082 | return -EINVAL; | |
1083 | ||
1084 | if (!phy_dev) | |
1085 | return -ENOTSUPP; | |
1086 | ||
1087 | return phy_mii_ioctl(phy_dev, ifr, cmd); | |
1088 | } | |
1089 | ||
1090 | /* use only for netconsole to poll with the device without interrupt */ | |
1091 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1092 | void hns_nic_poll_controller(struct net_device *ndev) | |
1093 | { | |
1094 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1095 | unsigned long flags; | |
1096 | int i; | |
1097 | ||
1098 | local_irq_save(flags); | |
1099 | for (i = 0; i < priv->ae_handle->q_num * 2; i++) | |
1100 | napi_schedule(&priv->ring_data[i].napi); | |
1101 | local_irq_restore(flags); | |
1102 | } | |
1103 | #endif | |
1104 | ||
1105 | static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb, | |
1106 | struct net_device *ndev) | |
1107 | { | |
1108 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1109 | int ret; | |
1110 | ||
1111 | assert(skb->queue_mapping < ndev->ae_handle->q_num); | |
1112 | ret = hns_nic_net_xmit_hw(ndev, skb, | |
1113 | &tx_ring_data(priv, skb->queue_mapping)); | |
1114 | if (ret == NETDEV_TX_OK) { | |
1115 | ndev->trans_start = jiffies; | |
1116 | ndev->stats.tx_bytes += skb->len; | |
1117 | ndev->stats.tx_packets++; | |
1118 | } | |
1119 | return (netdev_tx_t)ret; | |
1120 | } | |
1121 | ||
1122 | static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu) | |
1123 | { | |
1124 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1125 | struct hnae_handle *h = priv->ae_handle; | |
1126 | int ret; | |
1127 | ||
1128 | /* MTU < 68 is an error and causes problems on some kernels */ | |
1129 | if (new_mtu < 68) | |
1130 | return -EINVAL; | |
1131 | ||
1132 | if (!h->dev->ops->set_mtu) | |
1133 | return -ENOTSUPP; | |
1134 | ||
1135 | if (netif_running(ndev)) { | |
1136 | (void)hns_nic_net_stop(ndev); | |
1137 | msleep(100); | |
1138 | ||
1139 | ret = h->dev->ops->set_mtu(h, new_mtu); | |
1140 | if (ret) | |
1141 | netdev_err(ndev, "set mtu fail, return value %d\n", | |
1142 | ret); | |
1143 | ||
1144 | if (hns_nic_net_open(ndev)) | |
1145 | netdev_err(ndev, "hns net open fail\n"); | |
1146 | } else { | |
1147 | ret = h->dev->ops->set_mtu(h, new_mtu); | |
1148 | } | |
1149 | ||
1150 | if (!ret) | |
1151 | ndev->mtu = new_mtu; | |
1152 | ||
1153 | return ret; | |
1154 | } | |
1155 | ||
1156 | /** | |
1157 | * nic_set_multicast_list - set mutl mac address | |
1158 | * @netdev: net device | |
1159 | * @p: mac address | |
1160 | * | |
1161 | * return void | |
1162 | */ | |
1163 | void hns_set_multicast_list(struct net_device *ndev) | |
1164 | { | |
1165 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1166 | struct hnae_handle *h = priv->ae_handle; | |
1167 | struct netdev_hw_addr *ha = NULL; | |
1168 | ||
1169 | if (!h) { | |
1170 | netdev_err(ndev, "hnae handle is null\n"); | |
1171 | return; | |
1172 | } | |
1173 | ||
1174 | if (h->dev->ops->set_mc_addr) { | |
1175 | netdev_for_each_mc_addr(ha, ndev) | |
1176 | if (h->dev->ops->set_mc_addr(h, ha->addr)) | |
1177 | netdev_err(ndev, "set multicast fail\n"); | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | struct rtnl_link_stats64 *hns_nic_get_stats64(struct net_device *ndev, | |
1182 | struct rtnl_link_stats64 *stats) | |
1183 | { | |
1184 | int idx = 0; | |
1185 | u64 tx_bytes = 0; | |
1186 | u64 rx_bytes = 0; | |
1187 | u64 tx_pkts = 0; | |
1188 | u64 rx_pkts = 0; | |
1189 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1190 | struct hnae_handle *h = priv->ae_handle; | |
1191 | ||
1192 | for (idx = 0; idx < h->q_num; idx++) { | |
1193 | tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes; | |
1194 | tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts; | |
1195 | rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes; | |
1196 | rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts; | |
1197 | } | |
1198 | ||
1199 | stats->tx_bytes = tx_bytes; | |
1200 | stats->tx_packets = tx_pkts; | |
1201 | stats->rx_bytes = rx_bytes; | |
1202 | stats->rx_packets = rx_pkts; | |
1203 | ||
1204 | stats->rx_errors = ndev->stats.rx_errors; | |
1205 | stats->multicast = ndev->stats.multicast; | |
1206 | stats->rx_length_errors = ndev->stats.rx_length_errors; | |
1207 | stats->rx_crc_errors = ndev->stats.rx_crc_errors; | |
1208 | stats->rx_missed_errors = ndev->stats.rx_missed_errors; | |
1209 | ||
1210 | stats->tx_errors = ndev->stats.tx_errors; | |
1211 | stats->rx_dropped = ndev->stats.rx_dropped; | |
1212 | stats->tx_dropped = ndev->stats.tx_dropped; | |
1213 | stats->collisions = ndev->stats.collisions; | |
1214 | stats->rx_over_errors = ndev->stats.rx_over_errors; | |
1215 | stats->rx_frame_errors = ndev->stats.rx_frame_errors; | |
1216 | stats->rx_fifo_errors = ndev->stats.rx_fifo_errors; | |
1217 | stats->tx_aborted_errors = ndev->stats.tx_aborted_errors; | |
1218 | stats->tx_carrier_errors = ndev->stats.tx_carrier_errors; | |
1219 | stats->tx_fifo_errors = ndev->stats.tx_fifo_errors; | |
1220 | stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors; | |
1221 | stats->tx_window_errors = ndev->stats.tx_window_errors; | |
1222 | stats->rx_compressed = ndev->stats.rx_compressed; | |
1223 | stats->tx_compressed = ndev->stats.tx_compressed; | |
1224 | ||
1225 | return stats; | |
1226 | } | |
1227 | ||
1228 | static const struct net_device_ops hns_nic_netdev_ops = { | |
1229 | .ndo_open = hns_nic_net_open, | |
1230 | .ndo_stop = hns_nic_net_stop, | |
1231 | .ndo_start_xmit = hns_nic_net_xmit, | |
1232 | .ndo_tx_timeout = hns_nic_net_timeout, | |
1233 | .ndo_set_mac_address = hns_nic_net_set_mac_address, | |
1234 | .ndo_change_mtu = hns_nic_change_mtu, | |
1235 | .ndo_do_ioctl = hns_nic_do_ioctl, | |
1236 | .ndo_get_stats64 = hns_nic_get_stats64, | |
1237 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1238 | .ndo_poll_controller = hns_nic_poll_controller, | |
1239 | #endif | |
1240 | .ndo_set_rx_mode = hns_set_multicast_list, | |
1241 | }; | |
1242 | ||
1243 | static void hns_nic_update_link_status(struct net_device *netdev) | |
1244 | { | |
1245 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1246 | ||
1247 | struct hnae_handle *h = priv->ae_handle; | |
1248 | int state = 1; | |
1249 | ||
1250 | if (priv->phy) { | |
1251 | if (!genphy_update_link(priv->phy)) | |
1252 | state = priv->phy->link; | |
1253 | else | |
1254 | state = 0; | |
1255 | } | |
1256 | state = state && h->dev->ops->get_status(h); | |
1257 | ||
1258 | if (state != priv->link) { | |
1259 | if (state) { | |
1260 | netif_carrier_on(netdev); | |
1261 | netif_tx_wake_all_queues(netdev); | |
1262 | netdev_info(netdev, "link up\n"); | |
1263 | } else { | |
1264 | netif_carrier_off(netdev); | |
1265 | netdev_info(netdev, "link down\n"); | |
1266 | } | |
1267 | priv->link = state; | |
1268 | } | |
1269 | } | |
1270 | ||
1271 | /* for dumping key regs*/ | |
1272 | static void hns_nic_dump(struct hns_nic_priv *priv) | |
1273 | { | |
1274 | struct hnae_handle *h = priv->ae_handle; | |
1275 | struct hnae_ae_ops *ops = h->dev->ops; | |
1276 | u32 *data, reg_num, i; | |
1277 | ||
1278 | if (ops->get_regs_len && ops->get_regs) { | |
1279 | reg_num = ops->get_regs_len(priv->ae_handle); | |
1280 | reg_num = (reg_num + 3ul) & ~3ul; | |
1281 | data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL); | |
1282 | if (data) { | |
1283 | ops->get_regs(priv->ae_handle, data); | |
1284 | for (i = 0; i < reg_num; i += 4) | |
1285 | pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n", | |
1286 | i, data[i], data[i + 1], | |
1287 | data[i + 2], data[i + 3]); | |
1288 | kfree(data); | |
1289 | } | |
1290 | } | |
1291 | ||
1292 | for (i = 0; i < h->q_num; i++) { | |
1293 | pr_info("tx_queue%d_next_to_clean:%d\n", | |
1294 | i, h->qs[i]->tx_ring.next_to_clean); | |
1295 | pr_info("tx_queue%d_next_to_use:%d\n", | |
1296 | i, h->qs[i]->tx_ring.next_to_use); | |
1297 | pr_info("rx_queue%d_next_to_clean:%d\n", | |
1298 | i, h->qs[i]->rx_ring.next_to_clean); | |
1299 | pr_info("rx_queue%d_next_to_use:%d\n", | |
1300 | i, h->qs[i]->rx_ring.next_to_use); | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | /* for resetting suntask*/ | |
1305 | static void hns_nic_reset_subtask(struct hns_nic_priv *priv) | |
1306 | { | |
1307 | enum hnae_port_type type = priv->ae_handle->port_type; | |
1308 | ||
1309 | if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state)) | |
1310 | return; | |
1311 | clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state); | |
1312 | ||
1313 | /* If we're already down, removing or resetting, just bail */ | |
1314 | if (test_bit(NIC_STATE_DOWN, &priv->state) || | |
1315 | test_bit(NIC_STATE_REMOVING, &priv->state) || | |
1316 | test_bit(NIC_STATE_RESETTING, &priv->state)) | |
1317 | return; | |
1318 | ||
1319 | hns_nic_dump(priv); | |
1320 | netdev_err(priv->netdev, "Reset %s port\n", | |
1321 | (type == HNAE_PORT_DEBUG ? "debug" : "business")); | |
1322 | ||
1323 | rtnl_lock(); | |
1324 | if (type == HNAE_PORT_DEBUG) { | |
1325 | hns_nic_net_reinit(priv->netdev); | |
1326 | } else { | |
1327 | hns_nic_net_down(priv->netdev); | |
1328 | hns_nic_net_reset(priv->netdev); | |
1329 | } | |
1330 | rtnl_unlock(); | |
1331 | } | |
1332 | ||
1333 | /* for doing service complete*/ | |
1334 | static void hns_nic_service_event_complete(struct hns_nic_priv *priv) | |
1335 | { | |
1336 | assert(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state)); | |
1337 | ||
1338 | smp_mb__before_atomic(); | |
1339 | clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state); | |
1340 | } | |
1341 | ||
1342 | static void hns_nic_service_task(struct work_struct *work) | |
1343 | { | |
1344 | struct hns_nic_priv *priv | |
1345 | = container_of(work, struct hns_nic_priv, service_task); | |
1346 | struct hnae_handle *h = priv->ae_handle; | |
1347 | ||
1348 | hns_nic_update_link_status(priv->netdev); | |
1349 | h->dev->ops->update_led_status(h); | |
1350 | hns_nic_update_stats(priv->netdev); | |
1351 | ||
1352 | hns_nic_reset_subtask(priv); | |
1353 | hns_nic_service_event_complete(priv); | |
1354 | } | |
1355 | ||
1356 | static void hns_nic_task_schedule(struct hns_nic_priv *priv) | |
1357 | { | |
1358 | if (!test_bit(NIC_STATE_DOWN, &priv->state) && | |
1359 | !test_bit(NIC_STATE_REMOVING, &priv->state) && | |
1360 | !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state)) | |
1361 | (void)schedule_work(&priv->service_task); | |
1362 | } | |
1363 | ||
1364 | static void hns_nic_service_timer(unsigned long data) | |
1365 | { | |
1366 | struct hns_nic_priv *priv = (struct hns_nic_priv *)data; | |
1367 | ||
1368 | (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ); | |
1369 | ||
1370 | hns_nic_task_schedule(priv); | |
1371 | } | |
1372 | ||
1373 | /** | |
1374 | * hns_tx_timeout_reset - initiate reset due to Tx timeout | |
1375 | * @priv: driver private struct | |
1376 | **/ | |
1377 | static void hns_tx_timeout_reset(struct hns_nic_priv *priv) | |
1378 | { | |
1379 | /* Do the reset outside of interrupt context */ | |
1380 | if (!test_bit(NIC_STATE_DOWN, &priv->state)) { | |
1381 | set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state); | |
1382 | netdev_warn(priv->netdev, | |
1383 | "initiating reset due to tx timeout(%llu,0x%lx)\n", | |
1384 | priv->tx_timeout_count, priv->state); | |
1385 | priv->tx_timeout_count++; | |
1386 | hns_nic_task_schedule(priv); | |
1387 | } | |
1388 | } | |
1389 | ||
1390 | static int hns_nic_init_ring_data(struct hns_nic_priv *priv) | |
1391 | { | |
1392 | struct hnae_handle *h = priv->ae_handle; | |
1393 | struct hns_nic_ring_data *rd; | |
1394 | int i; | |
1395 | ||
1396 | if (h->q_num > NIC_MAX_Q_PER_VF) { | |
1397 | netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num); | |
1398 | return -EINVAL; | |
1399 | } | |
1400 | ||
1401 | priv->ring_data = kzalloc(h->q_num * sizeof(*priv->ring_data) * 2, | |
1402 | GFP_KERNEL); | |
1403 | if (!priv->ring_data) | |
1404 | return -ENOMEM; | |
1405 | ||
1406 | for (i = 0; i < h->q_num; i++) { | |
1407 | rd = &priv->ring_data[i]; | |
1408 | rd->queue_index = i; | |
1409 | rd->ring = &h->qs[i]->tx_ring; | |
1410 | rd->poll_one = hns_nic_tx_poll_one; | |
1411 | rd->fini_process = hns_nic_tx_fini_pro; | |
1412 | ||
1413 | netif_napi_add(priv->netdev, &rd->napi, | |
1414 | hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM); | |
1415 | rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED; | |
1416 | } | |
1417 | for (i = h->q_num; i < h->q_num * 2; i++) { | |
1418 | rd = &priv->ring_data[i]; | |
1419 | rd->queue_index = i - h->q_num; | |
1420 | rd->ring = &h->qs[i - h->q_num]->rx_ring; | |
1421 | rd->poll_one = hns_nic_rx_poll_one; | |
1422 | rd->ex_process = hns_nic_rx_up_pro; | |
1423 | rd->fini_process = hns_nic_rx_fini_pro; | |
1424 | ||
1425 | netif_napi_add(priv->netdev, &rd->napi, | |
1426 | hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM); | |
1427 | rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED; | |
1428 | } | |
1429 | ||
1430 | return 0; | |
1431 | } | |
1432 | ||
1433 | static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv) | |
1434 | { | |
1435 | struct hnae_handle *h = priv->ae_handle; | |
1436 | int i; | |
1437 | ||
1438 | for (i = 0; i < h->q_num * 2; i++) { | |
1439 | netif_napi_del(&priv->ring_data[i].napi); | |
1440 | if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) { | |
1441 | irq_set_affinity_hint(priv->ring_data[i].ring->irq, | |
1442 | NULL); | |
1443 | free_irq(priv->ring_data[i].ring->irq, | |
1444 | &priv->ring_data[i]); | |
1445 | } | |
1446 | ||
1447 | priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED; | |
1448 | } | |
1449 | kfree(priv->ring_data); | |
1450 | } | |
1451 | ||
1452 | static int hns_nic_try_get_ae(struct net_device *ndev) | |
1453 | { | |
1454 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1455 | struct hnae_handle *h; | |
1456 | int ret; | |
1457 | ||
1458 | h = hnae_get_handle(&priv->netdev->dev, | |
1459 | priv->ae_name, priv->port_id, NULL); | |
1460 | if (IS_ERR_OR_NULL(h)) { | |
1461 | ret = PTR_ERR(h); | |
1462 | dev_dbg(priv->dev, "has not handle, register notifier!\n"); | |
1463 | goto out; | |
1464 | } | |
1465 | priv->ae_handle = h; | |
1466 | ||
1467 | ret = hns_nic_init_phy(ndev, h); | |
1468 | if (ret) { | |
1469 | dev_err(priv->dev, "probe phy device fail!\n"); | |
1470 | goto out_init_phy; | |
1471 | } | |
1472 | ||
1473 | ret = hns_nic_init_ring_data(priv); | |
1474 | if (ret) { | |
1475 | ret = -ENOMEM; | |
1476 | goto out_init_ring_data; | |
1477 | } | |
1478 | ||
1479 | ret = register_netdev(ndev); | |
1480 | if (ret) { | |
1481 | dev_err(priv->dev, "probe register netdev fail!\n"); | |
1482 | goto out_reg_ndev_fail; | |
1483 | } | |
1484 | return 0; | |
1485 | ||
1486 | out_reg_ndev_fail: | |
1487 | hns_nic_uninit_ring_data(priv); | |
1488 | priv->ring_data = NULL; | |
1489 | out_init_phy: | |
1490 | out_init_ring_data: | |
1491 | hnae_put_handle(priv->ae_handle); | |
1492 | priv->ae_handle = NULL; | |
1493 | out: | |
1494 | return ret; | |
1495 | } | |
1496 | ||
1497 | static int hns_nic_notifier_action(struct notifier_block *nb, | |
1498 | unsigned long action, void *data) | |
1499 | { | |
1500 | struct hns_nic_priv *priv = | |
1501 | container_of(nb, struct hns_nic_priv, notifier_block); | |
1502 | ||
1503 | assert(action == HNAE_AE_REGISTER); | |
1504 | ||
1505 | if (!hns_nic_try_get_ae(priv->netdev)) { | |
1506 | hnae_unregister_notifier(&priv->notifier_block); | |
1507 | priv->notifier_block.notifier_call = NULL; | |
1508 | } | |
1509 | return 0; | |
1510 | } | |
1511 | ||
1512 | static int hns_nic_dev_probe(struct platform_device *pdev) | |
1513 | { | |
1514 | struct device *dev = &pdev->dev; | |
1515 | struct net_device *ndev; | |
1516 | struct hns_nic_priv *priv; | |
1517 | struct device_node *node = dev->of_node; | |
1518 | int ret; | |
1519 | ||
1520 | ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF); | |
1521 | if (!ndev) | |
1522 | return -ENOMEM; | |
1523 | ||
1524 | platform_set_drvdata(pdev, ndev); | |
1525 | ||
1526 | priv = netdev_priv(ndev); | |
1527 | priv->dev = dev; | |
1528 | priv->netdev = ndev; | |
1529 | ||
1530 | if (of_device_is_compatible(node, "hisilicon,hns-nic-v2")) | |
1531 | priv->enet_ver = AE_VERSION_2; | |
1532 | else | |
1533 | priv->enet_ver = AE_VERSION_1; | |
1534 | ||
1535 | ret = of_property_read_string(node, "ae-name", &priv->ae_name); | |
1536 | if (ret) | |
1537 | goto out_read_string_fail; | |
1538 | ||
1539 | ret = of_property_read_u32(node, "port-id", &priv->port_id); | |
1540 | if (ret) | |
1541 | goto out_read_string_fail; | |
1542 | ||
1543 | hns_init_mac_addr(ndev); | |
1544 | ||
1545 | ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT; | |
1546 | ndev->priv_flags |= IFF_UNICAST_FLT; | |
1547 | ndev->netdev_ops = &hns_nic_netdev_ops; | |
1548 | hns_ethtool_set_ops(ndev); | |
1549 | ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
1550 | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | | |
1551 | NETIF_F_GRO; | |
1552 | ndev->vlan_features |= | |
1553 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM; | |
1554 | ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO; | |
1555 | ||
1556 | SET_NETDEV_DEV(ndev, dev); | |
1557 | ||
1558 | if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64))) | |
1559 | dev_dbg(dev, "set mask to 64bit\n"); | |
1560 | else | |
1561 | dev_err(dev, "set mask to 32bit fail!\n"); | |
1562 | ||
1563 | /* carrier off reporting is important to ethtool even BEFORE open */ | |
1564 | netif_carrier_off(ndev); | |
1565 | ||
1566 | setup_timer(&priv->service_timer, hns_nic_service_timer, | |
1567 | (unsigned long)priv); | |
1568 | INIT_WORK(&priv->service_task, hns_nic_service_task); | |
1569 | ||
1570 | set_bit(NIC_STATE_SERVICE_INITED, &priv->state); | |
1571 | clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state); | |
1572 | set_bit(NIC_STATE_DOWN, &priv->state); | |
1573 | ||
1574 | if (hns_nic_try_get_ae(priv->netdev)) { | |
1575 | priv->notifier_block.notifier_call = hns_nic_notifier_action; | |
1576 | ret = hnae_register_notifier(&priv->notifier_block); | |
1577 | if (ret) { | |
1578 | dev_err(dev, "register notifier fail!\n"); | |
1579 | goto out_notify_fail; | |
1580 | } | |
1581 | dev_dbg(dev, "has not handle, register notifier!\n"); | |
1582 | } | |
1583 | ||
1584 | return 0; | |
1585 | ||
1586 | out_notify_fail: | |
1587 | (void)cancel_work_sync(&priv->service_task); | |
1588 | out_read_string_fail: | |
1589 | free_netdev(ndev); | |
1590 | return ret; | |
1591 | } | |
1592 | ||
1593 | static int hns_nic_dev_remove(struct platform_device *pdev) | |
1594 | { | |
1595 | struct net_device *ndev = platform_get_drvdata(pdev); | |
1596 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1597 | ||
1598 | if (ndev->reg_state != NETREG_UNINITIALIZED) | |
1599 | unregister_netdev(ndev); | |
1600 | ||
1601 | if (priv->ring_data) | |
1602 | hns_nic_uninit_ring_data(priv); | |
1603 | priv->ring_data = NULL; | |
1604 | ||
1605 | if (priv->phy) | |
1606 | phy_disconnect(priv->phy); | |
1607 | priv->phy = NULL; | |
1608 | ||
1609 | if (!IS_ERR_OR_NULL(priv->ae_handle)) | |
1610 | hnae_put_handle(priv->ae_handle); | |
1611 | priv->ae_handle = NULL; | |
1612 | if (priv->notifier_block.notifier_call) | |
1613 | hnae_unregister_notifier(&priv->notifier_block); | |
1614 | priv->notifier_block.notifier_call = NULL; | |
1615 | ||
1616 | set_bit(NIC_STATE_REMOVING, &priv->state); | |
1617 | (void)cancel_work_sync(&priv->service_task); | |
1618 | ||
1619 | free_netdev(ndev); | |
1620 | return 0; | |
1621 | } | |
1622 | ||
1623 | static const struct of_device_id hns_enet_of_match[] = { | |
1624 | {.compatible = "hisilicon,hns-nic-v1",}, | |
1625 | {.compatible = "hisilicon,hns-nic-v2",}, | |
1626 | {}, | |
1627 | }; | |
1628 | ||
1629 | MODULE_DEVICE_TABLE(of, hns_enet_of_match); | |
1630 | ||
1631 | static struct platform_driver hns_nic_dev_driver = { | |
1632 | .driver = { | |
1633 | .name = "hns-nic", | |
1634 | .owner = THIS_MODULE, | |
1635 | .of_match_table = hns_enet_of_match, | |
1636 | }, | |
1637 | .probe = hns_nic_dev_probe, | |
1638 | .remove = hns_nic_dev_remove, | |
1639 | }; | |
1640 | ||
1641 | module_platform_driver(hns_nic_dev_driver); | |
1642 | ||
1643 | MODULE_DESCRIPTION("HISILICON HNS Ethernet driver"); | |
1644 | MODULE_AUTHOR("Hisilicon, Inc."); | |
1645 | MODULE_LICENSE("GPL"); | |
1646 | MODULE_ALIAS("platform:hns-nic"); |