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b5996f11 | 1 | /* |
2 | * Copyright (c) 2014-2015 Hisilicon Limited. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | */ | |
9 | ||
10 | #include <linux/clk.h> | |
11 | #include <linux/cpumask.h> | |
12 | #include <linux/etherdevice.h> | |
13 | #include <linux/if_vlan.h> | |
14 | #include <linux/interrupt.h> | |
15 | #include <linux/io.h> | |
16 | #include <linux/ip.h> | |
17 | #include <linux/ipv6.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/phy.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/skbuff.h> | |
22 | ||
23 | #include "hnae.h" | |
24 | #include "hns_enet.h" | |
44770e11 | 25 | #include "hns_dsaf_mac.h" |
b5996f11 | 26 | |
27 | #define NIC_MAX_Q_PER_VF 16 | |
28 | #define HNS_NIC_TX_TIMEOUT (5 * HZ) | |
29 | ||
30 | #define SERVICE_TIMER_HZ (1 * HZ) | |
31 | ||
32 | #define NIC_TX_CLEAN_MAX_NUM 256 | |
33 | #define NIC_RX_CLEAN_MAX_NUM 64 | |
34 | ||
b5996f11 | 35 | #define RCB_IRQ_NOT_INITED 0 |
36 | #define RCB_IRQ_INITED 1 | |
9cbe9fd5 | 37 | #define HNS_BUFFER_SIZE_2048 2048 |
b5996f11 | 38 | |
13ac695e S |
39 | #define BD_MAX_SEND_SIZE 8191 |
40 | #define SKB_TMP_LEN(SKB) \ | |
41 | (((SKB)->transport_header - (SKB)->mac_header) + tcp_hdrlen(SKB)) | |
42 | ||
43 | static void fill_v2_desc(struct hnae_ring *ring, void *priv, | |
44 | int size, dma_addr_t dma, int frag_end, | |
45 | int buf_num, enum hns_desc_type type, int mtu) | |
46 | { | |
47 | struct hnae_desc *desc = &ring->desc[ring->next_to_use]; | |
48 | struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; | |
49 | struct iphdr *iphdr; | |
50 | struct ipv6hdr *ipv6hdr; | |
51 | struct sk_buff *skb; | |
13ac695e S |
52 | __be16 protocol; |
53 | u8 bn_pid = 0; | |
54 | u8 rrcfv = 0; | |
55 | u8 ip_offset = 0; | |
56 | u8 tvsvsn = 0; | |
57 | u16 mss = 0; | |
58 | u8 l4_len = 0; | |
59 | u16 paylen = 0; | |
60 | ||
61 | desc_cb->priv = priv; | |
62 | desc_cb->length = size; | |
63 | desc_cb->dma = dma; | |
64 | desc_cb->type = type; | |
65 | ||
66 | desc->addr = cpu_to_le64(dma); | |
67 | desc->tx.send_size = cpu_to_le16((u16)size); | |
68 | ||
f8a1a636 | 69 | /* config bd buffer end */ |
13ac695e S |
70 | hnae_set_bit(rrcfv, HNSV2_TXD_VLD_B, 1); |
71 | hnae_set_field(bn_pid, HNSV2_TXD_BUFNUM_M, 0, buf_num - 1); | |
72 | ||
f8a1a636 SL |
73 | /* fill port_id in the tx bd for sending management pkts */ |
74 | hnae_set_field(bn_pid, HNSV2_TXD_PORTID_M, | |
75 | HNSV2_TXD_PORTID_S, ring->q->handle->dport_id); | |
76 | ||
13ac695e S |
77 | if (type == DESC_TYPE_SKB) { |
78 | skb = (struct sk_buff *)priv; | |
79 | ||
80 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
81 | skb_reset_mac_len(skb); | |
82 | protocol = skb->protocol; | |
83 | ip_offset = ETH_HLEN; | |
84 | ||
85 | if (protocol == htons(ETH_P_8021Q)) { | |
86 | ip_offset += VLAN_HLEN; | |
87 | protocol = vlan_get_protocol(skb); | |
88 | skb->protocol = protocol; | |
89 | } | |
90 | ||
91 | if (skb->protocol == htons(ETH_P_IP)) { | |
92 | iphdr = ip_hdr(skb); | |
93 | hnae_set_bit(rrcfv, HNSV2_TXD_L3CS_B, 1); | |
94 | hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1); | |
95 | ||
96 | /* check for tcp/udp header */ | |
0b51b1dc DH |
97 | if (iphdr->protocol == IPPROTO_TCP && |
98 | skb_is_gso(skb)) { | |
13ac695e S |
99 | hnae_set_bit(tvsvsn, |
100 | HNSV2_TXD_TSE_B, 1); | |
13ac695e | 101 | l4_len = tcp_hdrlen(skb); |
0b51b1dc DH |
102 | mss = skb_shinfo(skb)->gso_size; |
103 | paylen = skb->len - SKB_TMP_LEN(skb); | |
13ac695e S |
104 | } |
105 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
106 | hnae_set_bit(tvsvsn, HNSV2_TXD_IPV6_B, 1); | |
107 | ipv6hdr = ipv6_hdr(skb); | |
108 | hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1); | |
109 | ||
110 | /* check for tcp/udp header */ | |
0b51b1dc DH |
111 | if (ipv6hdr->nexthdr == IPPROTO_TCP && |
112 | skb_is_gso(skb) && skb_is_gso_v6(skb)) { | |
13ac695e S |
113 | hnae_set_bit(tvsvsn, |
114 | HNSV2_TXD_TSE_B, 1); | |
13ac695e | 115 | l4_len = tcp_hdrlen(skb); |
0b51b1dc DH |
116 | mss = skb_shinfo(skb)->gso_size; |
117 | paylen = skb->len - SKB_TMP_LEN(skb); | |
13ac695e S |
118 | } |
119 | } | |
120 | desc->tx.ip_offset = ip_offset; | |
121 | desc->tx.tse_vlan_snap_v6_sctp_nth = tvsvsn; | |
122 | desc->tx.mss = cpu_to_le16(mss); | |
123 | desc->tx.l4_len = l4_len; | |
124 | desc->tx.paylen = cpu_to_le16(paylen); | |
125 | } | |
126 | } | |
127 | ||
128 | hnae_set_bit(rrcfv, HNSV2_TXD_FE_B, frag_end); | |
129 | ||
130 | desc->tx.bn_pid = bn_pid; | |
131 | desc->tx.ra_ri_cs_fe_vld = rrcfv; | |
132 | ||
133 | ring_ptr_move_fw(ring, next_to_use); | |
134 | } | |
135 | ||
63434888 KY |
136 | static const struct acpi_device_id hns_enet_acpi_match[] = { |
137 | { "HISI00C1", 0 }, | |
138 | { "HISI00C2", 0 }, | |
139 | { }, | |
140 | }; | |
141 | MODULE_DEVICE_TABLE(acpi, hns_enet_acpi_match); | |
142 | ||
b5996f11 | 143 | static void fill_desc(struct hnae_ring *ring, void *priv, |
144 | int size, dma_addr_t dma, int frag_end, | |
13ac695e | 145 | int buf_num, enum hns_desc_type type, int mtu) |
b5996f11 | 146 | { |
147 | struct hnae_desc *desc = &ring->desc[ring->next_to_use]; | |
148 | struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; | |
149 | struct sk_buff *skb; | |
150 | __be16 protocol; | |
151 | u32 ip_offset; | |
152 | u32 asid_bufnum_pid = 0; | |
153 | u32 flag_ipoffset = 0; | |
154 | ||
155 | desc_cb->priv = priv; | |
156 | desc_cb->length = size; | |
157 | desc_cb->dma = dma; | |
158 | desc_cb->type = type; | |
159 | ||
160 | desc->addr = cpu_to_le64(dma); | |
161 | desc->tx.send_size = cpu_to_le16((u16)size); | |
162 | ||
163 | /*config bd buffer end */ | |
164 | flag_ipoffset |= 1 << HNS_TXD_VLD_B; | |
165 | ||
166 | asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S; | |
167 | ||
168 | if (type == DESC_TYPE_SKB) { | |
169 | skb = (struct sk_buff *)priv; | |
170 | ||
171 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
172 | protocol = skb->protocol; | |
173 | ip_offset = ETH_HLEN; | |
174 | ||
175 | /*if it is a SW VLAN check the next protocol*/ | |
176 | if (protocol == htons(ETH_P_8021Q)) { | |
177 | ip_offset += VLAN_HLEN; | |
178 | protocol = vlan_get_protocol(skb); | |
179 | skb->protocol = protocol; | |
180 | } | |
181 | ||
182 | if (skb->protocol == htons(ETH_P_IP)) { | |
183 | flag_ipoffset |= 1 << HNS_TXD_L3CS_B; | |
184 | /* check for tcp/udp header */ | |
185 | flag_ipoffset |= 1 << HNS_TXD_L4CS_B; | |
186 | ||
187 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
188 | /* ipv6 has not l3 cs, check for L4 header */ | |
189 | flag_ipoffset |= 1 << HNS_TXD_L4CS_B; | |
190 | } | |
191 | ||
192 | flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S; | |
193 | } | |
194 | } | |
195 | ||
196 | flag_ipoffset |= frag_end << HNS_TXD_FE_B; | |
197 | ||
198 | desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid); | |
199 | desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset); | |
200 | ||
201 | ring_ptr_move_fw(ring, next_to_use); | |
202 | } | |
203 | ||
204 | static void unfill_desc(struct hnae_ring *ring) | |
205 | { | |
206 | ring_ptr_move_bw(ring, next_to_use); | |
207 | } | |
208 | ||
13ac695e S |
209 | static int hns_nic_maybe_stop_tx( |
210 | struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring) | |
b5996f11 | 211 | { |
13ac695e S |
212 | struct sk_buff *skb = *out_skb; |
213 | struct sk_buff *new_skb = NULL; | |
b5996f11 | 214 | int buf_num; |
b5996f11 | 215 | |
216 | /* no. of segments (plus a header) */ | |
217 | buf_num = skb_shinfo(skb)->nr_frags + 1; | |
218 | ||
219 | if (unlikely(buf_num > ring->max_desc_num_per_pkt)) { | |
13ac695e S |
220 | if (ring_space(ring) < 1) |
221 | return -EBUSY; | |
b5996f11 | 222 | |
223 | new_skb = skb_copy(skb, GFP_ATOMIC); | |
13ac695e S |
224 | if (!new_skb) |
225 | return -ENOMEM; | |
b5996f11 | 226 | |
227 | dev_kfree_skb_any(skb); | |
13ac695e | 228 | *out_skb = new_skb; |
b5996f11 | 229 | buf_num = 1; |
b5996f11 | 230 | } else if (buf_num > ring_space(ring)) { |
13ac695e S |
231 | return -EBUSY; |
232 | } | |
233 | ||
234 | *bnum = buf_num; | |
235 | return 0; | |
236 | } | |
237 | ||
64353af6 S |
238 | static int hns_nic_maybe_stop_tso( |
239 | struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring) | |
240 | { | |
241 | int i; | |
242 | int size; | |
243 | int buf_num; | |
244 | int frag_num; | |
245 | struct sk_buff *skb = *out_skb; | |
246 | struct sk_buff *new_skb = NULL; | |
247 | struct skb_frag_struct *frag; | |
248 | ||
249 | size = skb_headlen(skb); | |
250 | buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; | |
251 | ||
252 | frag_num = skb_shinfo(skb)->nr_frags; | |
253 | for (i = 0; i < frag_num; i++) { | |
254 | frag = &skb_shinfo(skb)->frags[i]; | |
255 | size = skb_frag_size(frag); | |
256 | buf_num += (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; | |
257 | } | |
258 | ||
259 | if (unlikely(buf_num > ring->max_desc_num_per_pkt)) { | |
260 | buf_num = (skb->len + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; | |
261 | if (ring_space(ring) < buf_num) | |
262 | return -EBUSY; | |
263 | /* manual split the send packet */ | |
264 | new_skb = skb_copy(skb, GFP_ATOMIC); | |
265 | if (!new_skb) | |
266 | return -ENOMEM; | |
267 | dev_kfree_skb_any(skb); | |
268 | *out_skb = new_skb; | |
269 | ||
270 | } else if (ring_space(ring) < buf_num) { | |
271 | return -EBUSY; | |
272 | } | |
273 | ||
274 | *bnum = buf_num; | |
275 | return 0; | |
276 | } | |
277 | ||
278 | static void fill_tso_desc(struct hnae_ring *ring, void *priv, | |
279 | int size, dma_addr_t dma, int frag_end, | |
280 | int buf_num, enum hns_desc_type type, int mtu) | |
281 | { | |
282 | int frag_buf_num; | |
283 | int sizeoflast; | |
284 | int k; | |
285 | ||
286 | frag_buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; | |
287 | sizeoflast = size % BD_MAX_SEND_SIZE; | |
288 | sizeoflast = sizeoflast ? sizeoflast : BD_MAX_SEND_SIZE; | |
289 | ||
290 | /* when the frag size is bigger than hardware, split this frag */ | |
291 | for (k = 0; k < frag_buf_num; k++) | |
292 | fill_v2_desc(ring, priv, | |
293 | (k == frag_buf_num - 1) ? | |
294 | sizeoflast : BD_MAX_SEND_SIZE, | |
295 | dma + BD_MAX_SEND_SIZE * k, | |
296 | frag_end && (k == frag_buf_num - 1) ? 1 : 0, | |
297 | buf_num, | |
298 | (type == DESC_TYPE_SKB && !k) ? | |
299 | DESC_TYPE_SKB : DESC_TYPE_PAGE, | |
300 | mtu); | |
301 | } | |
302 | ||
27463ad9 YL |
303 | netdev_tx_t hns_nic_net_xmit_hw(struct net_device *ndev, |
304 | struct sk_buff *skb, | |
305 | struct hns_nic_ring_data *ring_data) | |
13ac695e S |
306 | { |
307 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
13ac695e | 308 | struct hnae_ring *ring = ring_data->ring; |
b85ea006 | 309 | struct device *dev = ring_to_dev(ring); |
13ac695e S |
310 | struct netdev_queue *dev_queue; |
311 | struct skb_frag_struct *frag; | |
312 | int buf_num; | |
313 | int seg_num; | |
314 | dma_addr_t dma; | |
315 | int size, next_to_use; | |
316 | int i; | |
317 | ||
318 | switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) { | |
319 | case -EBUSY: | |
b5996f11 | 320 | ring->stats.tx_busy++; |
321 | goto out_net_tx_busy; | |
13ac695e S |
322 | case -ENOMEM: |
323 | ring->stats.sw_err_cnt++; | |
324 | netdev_err(ndev, "no memory to xmit!\n"); | |
325 | goto out_err_tx_ok; | |
326 | default: | |
327 | break; | |
b5996f11 | 328 | } |
13ac695e S |
329 | |
330 | /* no. of segments (plus a header) */ | |
331 | seg_num = skb_shinfo(skb)->nr_frags + 1; | |
b5996f11 | 332 | next_to_use = ring->next_to_use; |
333 | ||
334 | /* fill the first part */ | |
335 | size = skb_headlen(skb); | |
336 | dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE); | |
337 | if (dma_mapping_error(dev, dma)) { | |
338 | netdev_err(ndev, "TX head DMA map failed\n"); | |
339 | ring->stats.sw_err_cnt++; | |
340 | goto out_err_tx_ok; | |
341 | } | |
13ac695e S |
342 | priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0, |
343 | buf_num, DESC_TYPE_SKB, ndev->mtu); | |
b5996f11 | 344 | |
345 | /* fill the fragments */ | |
13ac695e | 346 | for (i = 1; i < seg_num; i++) { |
b5996f11 | 347 | frag = &skb_shinfo(skb)->frags[i - 1]; |
348 | size = skb_frag_size(frag); | |
349 | dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE); | |
350 | if (dma_mapping_error(dev, dma)) { | |
351 | netdev_err(ndev, "TX frag(%d) DMA map failed\n", i); | |
352 | ring->stats.sw_err_cnt++; | |
353 | goto out_map_frag_fail; | |
354 | } | |
13ac695e S |
355 | priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma, |
356 | seg_num - 1 == i ? 1 : 0, buf_num, | |
357 | DESC_TYPE_PAGE, ndev->mtu); | |
b5996f11 | 358 | } |
359 | ||
360 | /*complete translate all packets*/ | |
361 | dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping); | |
362 | netdev_tx_sent_queue(dev_queue, skb->len); | |
363 | ||
27463ad9 YL |
364 | netif_trans_update(ndev); |
365 | ndev->stats.tx_bytes += skb->len; | |
366 | ndev->stats.tx_packets++; | |
367 | ||
b5996f11 | 368 | wmb(); /* commit all data before submit */ |
369 | assert(skb->queue_mapping < priv->ae_handle->q_num); | |
370 | hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num); | |
371 | ring->stats.tx_pkts++; | |
372 | ring->stats.tx_bytes += skb->len; | |
373 | ||
374 | return NETDEV_TX_OK; | |
375 | ||
376 | out_map_frag_fail: | |
377 | ||
13ac695e | 378 | while (ring->next_to_use != next_to_use) { |
b5996f11 | 379 | unfill_desc(ring); |
13ac695e S |
380 | if (ring->next_to_use != next_to_use) |
381 | dma_unmap_page(dev, | |
382 | ring->desc_cb[ring->next_to_use].dma, | |
383 | ring->desc_cb[ring->next_to_use].length, | |
384 | DMA_TO_DEVICE); | |
385 | else | |
386 | dma_unmap_single(dev, | |
387 | ring->desc_cb[next_to_use].dma, | |
388 | ring->desc_cb[next_to_use].length, | |
389 | DMA_TO_DEVICE); | |
b5996f11 | 390 | } |
391 | ||
b5996f11 | 392 | out_err_tx_ok: |
393 | ||
394 | dev_kfree_skb_any(skb); | |
395 | return NETDEV_TX_OK; | |
396 | ||
397 | out_net_tx_busy: | |
398 | ||
399 | netif_stop_subqueue(ndev, skb->queue_mapping); | |
400 | ||
401 | /* Herbert's original patch had: | |
402 | * smp_mb__after_netif_stop_queue(); | |
403 | * but since that doesn't exist yet, just open code it. | |
404 | */ | |
405 | smp_mb(); | |
406 | return NETDEV_TX_BUSY; | |
407 | } | |
408 | ||
409 | /** | |
410 | * hns_nic_get_headlen - determine size of header for RSC/LRO/GRO/FCOE | |
411 | * @data: pointer to the start of the headers | |
412 | * @max: total length of section to find headers in | |
413 | * | |
414 | * This function is meant to determine the length of headers that will | |
415 | * be recognized by hardware for LRO, GRO, and RSC offloads. The main | |
416 | * motivation of doing this is to only perform one pull for IPv4 TCP | |
417 | * packets so that we can do basic things like calculating the gso_size | |
418 | * based on the average data per packet. | |
419 | **/ | |
420 | static unsigned int hns_nic_get_headlen(unsigned char *data, u32 flag, | |
421 | unsigned int max_size) | |
422 | { | |
423 | unsigned char *network; | |
424 | u8 hlen; | |
425 | ||
426 | /* this should never happen, but better safe than sorry */ | |
427 | if (max_size < ETH_HLEN) | |
428 | return max_size; | |
429 | ||
430 | /* initialize network frame pointer */ | |
431 | network = data; | |
432 | ||
433 | /* set first protocol and move network header forward */ | |
434 | network += ETH_HLEN; | |
435 | ||
436 | /* handle any vlan tag if present */ | |
437 | if (hnae_get_field(flag, HNS_RXD_VLAN_M, HNS_RXD_VLAN_S) | |
438 | == HNS_RX_FLAG_VLAN_PRESENT) { | |
439 | if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN)) | |
440 | return max_size; | |
441 | ||
442 | network += VLAN_HLEN; | |
443 | } | |
444 | ||
445 | /* handle L3 protocols */ | |
446 | if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S) | |
447 | == HNS_RX_FLAG_L3ID_IPV4) { | |
448 | if ((typeof(max_size))(network - data) > | |
449 | (max_size - sizeof(struct iphdr))) | |
450 | return max_size; | |
451 | ||
452 | /* access ihl as a u8 to avoid unaligned access on ia64 */ | |
453 | hlen = (network[0] & 0x0F) << 2; | |
454 | ||
455 | /* verify hlen meets minimum size requirements */ | |
456 | if (hlen < sizeof(struct iphdr)) | |
457 | return network - data; | |
458 | ||
459 | /* record next protocol if header is present */ | |
460 | } else if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S) | |
461 | == HNS_RX_FLAG_L3ID_IPV6) { | |
462 | if ((typeof(max_size))(network - data) > | |
463 | (max_size - sizeof(struct ipv6hdr))) | |
464 | return max_size; | |
465 | ||
466 | /* record next protocol */ | |
467 | hlen = sizeof(struct ipv6hdr); | |
468 | } else { | |
469 | return network - data; | |
470 | } | |
471 | ||
472 | /* relocate pointer to start of L4 header */ | |
473 | network += hlen; | |
474 | ||
475 | /* finally sort out TCP/UDP */ | |
476 | if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S) | |
477 | == HNS_RX_FLAG_L4ID_TCP) { | |
478 | if ((typeof(max_size))(network - data) > | |
479 | (max_size - sizeof(struct tcphdr))) | |
480 | return max_size; | |
481 | ||
482 | /* access doff as a u8 to avoid unaligned access on ia64 */ | |
483 | hlen = (network[12] & 0xF0) >> 2; | |
484 | ||
485 | /* verify hlen meets minimum size requirements */ | |
486 | if (hlen < sizeof(struct tcphdr)) | |
487 | return network - data; | |
488 | ||
489 | network += hlen; | |
490 | } else if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S) | |
491 | == HNS_RX_FLAG_L4ID_UDP) { | |
492 | if ((typeof(max_size))(network - data) > | |
493 | (max_size - sizeof(struct udphdr))) | |
494 | return max_size; | |
495 | ||
496 | network += sizeof(struct udphdr); | |
497 | } | |
498 | ||
499 | /* If everything has gone correctly network should be the | |
500 | * data section of the packet and will be the end of the header. | |
501 | * If not then it probably represents the end of the last recognized | |
502 | * header. | |
503 | */ | |
504 | if ((typeof(max_size))(network - data) < max_size) | |
505 | return network - data; | |
506 | else | |
507 | return max_size; | |
508 | } | |
509 | ||
9cbe9fd5 | 510 | static void hns_nic_reuse_page(struct sk_buff *skb, int i, |
511 | struct hnae_ring *ring, int pull_len, | |
512 | struct hnae_desc_cb *desc_cb) | |
b5996f11 | 513 | { |
9cbe9fd5 | 514 | struct hnae_desc *desc; |
515 | int truesize, size; | |
516 | int last_offset; | |
be78a690 AB |
517 | bool twobufs; |
518 | ||
b4957ab0 S |
519 | twobufs = ((PAGE_SIZE < 8192) && |
520 | hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048); | |
9cbe9fd5 | 521 | |
522 | desc = &ring->desc[ring->next_to_clean]; | |
523 | size = le16_to_cpu(desc->rx.size); | |
524 | ||
be78a690 | 525 | if (twobufs) { |
9cbe9fd5 | 526 | truesize = hnae_buf_size(ring); |
527 | } else { | |
528 | truesize = ALIGN(size, L1_CACHE_BYTES); | |
529 | last_offset = hnae_page_size(ring) - hnae_buf_size(ring); | |
530 | } | |
531 | ||
9cbe9fd5 | 532 | skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len, |
533 | size - pull_len, truesize - pull_len); | |
534 | ||
b5996f11 | 535 | /* avoid re-using remote pages,flag default unreuse */ |
be78a690 AB |
536 | if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id())) |
537 | return; | |
538 | ||
539 | if (twobufs) { | |
540 | /* if we are only owner of page we can reuse it */ | |
541 | if (likely(page_count(desc_cb->priv) == 1)) { | |
542 | /* flip page offset to other buffer */ | |
543 | desc_cb->page_offset ^= truesize; | |
b5996f11 | 544 | |
b5996f11 | 545 | desc_cb->reuse_flag = 1; |
546 | /* bump ref count on page before it is given*/ | |
547 | get_page(desc_cb->priv); | |
548 | } | |
be78a690 AB |
549 | return; |
550 | } | |
551 | ||
552 | /* move offset up to the next cache line */ | |
553 | desc_cb->page_offset += truesize; | |
554 | ||
555 | if (desc_cb->page_offset <= last_offset) { | |
556 | desc_cb->reuse_flag = 1; | |
557 | /* bump ref count on page before it is given*/ | |
558 | get_page(desc_cb->priv); | |
b5996f11 | 559 | } |
560 | } | |
561 | ||
13ac695e S |
562 | static void get_v2rx_desc_bnum(u32 bnum_flag, int *out_bnum) |
563 | { | |
564 | *out_bnum = hnae_get_field(bnum_flag, | |
565 | HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S) + 1; | |
566 | } | |
567 | ||
568 | static void get_rx_desc_bnum(u32 bnum_flag, int *out_bnum) | |
569 | { | |
570 | *out_bnum = hnae_get_field(bnum_flag, | |
571 | HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S); | |
572 | } | |
573 | ||
862b3d20 S |
574 | static void hns_nic_rx_checksum(struct hns_nic_ring_data *ring_data, |
575 | struct sk_buff *skb, u32 flag) | |
576 | { | |
577 | struct net_device *netdev = ring_data->napi.dev; | |
578 | u32 l3id; | |
579 | u32 l4id; | |
580 | ||
581 | /* check if RX checksum offload is enabled */ | |
582 | if (unlikely(!(netdev->features & NETIF_F_RXCSUM))) | |
583 | return; | |
584 | ||
585 | /* In hardware, we only support checksum for the following protocols: | |
586 | * 1) IPv4, | |
587 | * 2) TCP(over IPv4 or IPv6), | |
588 | * 3) UDP(over IPv4 or IPv6), | |
589 | * 4) SCTP(over IPv4 or IPv6) | |
590 | * but we support many L3(IPv4, IPv6, MPLS, PPPoE etc) and L4(TCP, | |
591 | * UDP, GRE, SCTP, IGMP, ICMP etc.) protocols. | |
592 | * | |
593 | * Hardware limitation: | |
594 | * Our present hardware RX Descriptor lacks L3/L4 checksum "Status & | |
595 | * Error" bit (which usually can be used to indicate whether checksum | |
596 | * was calculated by the hardware and if there was any error encountered | |
597 | * during checksum calculation). | |
598 | * | |
599 | * Software workaround: | |
600 | * We do get info within the RX descriptor about the kind of L3/L4 | |
601 | * protocol coming in the packet and the error status. These errors | |
602 | * might not just be checksum errors but could be related to version, | |
603 | * length of IPv4, UDP, TCP etc. | |
604 | * Because there is no-way of knowing if it is a L3/L4 error due to bad | |
605 | * checksum or any other L3/L4 error, we will not (cannot) convey | |
606 | * checksum status for such cases to upper stack and will not maintain | |
607 | * the RX L3/L4 checksum counters as well. | |
608 | */ | |
609 | ||
610 | l3id = hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S); | |
611 | l4id = hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S); | |
612 | ||
613 | /* check L3 protocol for which checksum is supported */ | |
614 | if ((l3id != HNS_RX_FLAG_L3ID_IPV4) && (l3id != HNS_RX_FLAG_L3ID_IPV6)) | |
615 | return; | |
616 | ||
617 | /* check for any(not just checksum)flagged L3 protocol errors */ | |
618 | if (unlikely(hnae_get_bit(flag, HNS_RXD_L3E_B))) | |
619 | return; | |
620 | ||
621 | /* we do not support checksum of fragmented packets */ | |
622 | if (unlikely(hnae_get_bit(flag, HNS_RXD_FRAG_B))) | |
623 | return; | |
624 | ||
625 | /* check L4 protocol for which checksum is supported */ | |
626 | if ((l4id != HNS_RX_FLAG_L4ID_TCP) && | |
627 | (l4id != HNS_RX_FLAG_L4ID_UDP) && | |
628 | (l4id != HNS_RX_FLAG_L4ID_SCTP)) | |
629 | return; | |
630 | ||
631 | /* check for any(not just checksum)flagged L4 protocol errors */ | |
632 | if (unlikely(hnae_get_bit(flag, HNS_RXD_L4E_B))) | |
633 | return; | |
634 | ||
635 | /* now, this has to be a packet with valid RX checksum */ | |
636 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
637 | } | |
638 | ||
b5996f11 | 639 | static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data, |
640 | struct sk_buff **out_skb, int *out_bnum) | |
641 | { | |
642 | struct hnae_ring *ring = ring_data->ring; | |
643 | struct net_device *ndev = ring_data->napi.dev; | |
13ac695e | 644 | struct hns_nic_priv *priv = netdev_priv(ndev); |
b5996f11 | 645 | struct sk_buff *skb; |
646 | struct hnae_desc *desc; | |
647 | struct hnae_desc_cb *desc_cb; | |
648 | unsigned char *va; | |
9cbe9fd5 | 649 | int bnum, length, i; |
b5996f11 | 650 | int pull_len; |
651 | u32 bnum_flag; | |
652 | ||
b5996f11 | 653 | desc = &ring->desc[ring->next_to_clean]; |
654 | desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
13ac695e S |
655 | |
656 | prefetch(desc); | |
657 | ||
b5996f11 | 658 | va = (unsigned char *)desc_cb->buf + desc_cb->page_offset; |
659 | ||
13ac695e S |
660 | /* prefetch first cache line of first page */ |
661 | prefetch(va); | |
662 | #if L1_CACHE_BYTES < 128 | |
663 | prefetch(va + L1_CACHE_BYTES); | |
664 | #endif | |
665 | ||
666 | skb = *out_skb = napi_alloc_skb(&ring_data->napi, | |
667 | HNS_RX_HEAD_SIZE); | |
b5996f11 | 668 | if (unlikely(!skb)) { |
669 | netdev_err(ndev, "alloc rx skb fail\n"); | |
670 | ring->stats.sw_err_cnt++; | |
671 | return -ENOMEM; | |
672 | } | |
673 | ||
9cbe9fd5 | 674 | prefetchw(skb->data); |
13ac695e S |
675 | length = le16_to_cpu(desc->rx.pkt_len); |
676 | bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag); | |
677 | priv->ops.get_rxd_bnum(bnum_flag, &bnum); | |
678 | *out_bnum = bnum; | |
679 | ||
b5996f11 | 680 | if (length <= HNS_RX_HEAD_SIZE) { |
681 | memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long))); | |
682 | ||
683 | /* we can reuse buffer as-is, just make sure it is local */ | |
684 | if (likely(page_to_nid(desc_cb->priv) == numa_node_id())) | |
685 | desc_cb->reuse_flag = 1; | |
686 | else /* this page cannot be reused so discard it */ | |
687 | put_page(desc_cb->priv); | |
688 | ||
689 | ring_ptr_move_fw(ring, next_to_clean); | |
690 | ||
691 | if (unlikely(bnum != 1)) { /* check err*/ | |
692 | *out_bnum = 1; | |
693 | goto out_bnum_err; | |
694 | } | |
695 | } else { | |
696 | ring->stats.seg_pkt_cnt++; | |
697 | ||
698 | pull_len = hns_nic_get_headlen(va, bnum_flag, HNS_RX_HEAD_SIZE); | |
699 | memcpy(__skb_put(skb, pull_len), va, | |
700 | ALIGN(pull_len, sizeof(long))); | |
701 | ||
9cbe9fd5 | 702 | hns_nic_reuse_page(skb, 0, ring, pull_len, desc_cb); |
b5996f11 | 703 | ring_ptr_move_fw(ring, next_to_clean); |
704 | ||
705 | if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/ | |
706 | *out_bnum = 1; | |
707 | goto out_bnum_err; | |
708 | } | |
709 | for (i = 1; i < bnum; i++) { | |
710 | desc = &ring->desc[ring->next_to_clean]; | |
711 | desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
b5996f11 | 712 | |
9cbe9fd5 | 713 | hns_nic_reuse_page(skb, i, ring, 0, desc_cb); |
b5996f11 | 714 | ring_ptr_move_fw(ring, next_to_clean); |
715 | } | |
716 | } | |
717 | ||
718 | /* check except process, free skb and jump the desc */ | |
719 | if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) { | |
720 | out_bnum_err: | |
721 | *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/ | |
722 | netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n", | |
723 | bnum, ring->max_desc_num_per_pkt, | |
724 | length, (int)MAX_SKB_FRAGS, | |
725 | ((u64 *)desc)[0], ((u64 *)desc)[1]); | |
726 | ring->stats.err_bd_num++; | |
727 | dev_kfree_skb_any(skb); | |
728 | return -EDOM; | |
729 | } | |
730 | ||
731 | bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag); | |
732 | ||
733 | if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) { | |
734 | netdev_err(ndev, "no valid bd,%016llx,%016llx\n", | |
735 | ((u64 *)desc)[0], ((u64 *)desc)[1]); | |
736 | ring->stats.non_vld_descs++; | |
737 | dev_kfree_skb_any(skb); | |
738 | return -EINVAL; | |
739 | } | |
740 | ||
741 | if (unlikely((!desc->rx.pkt_len) || | |
742 | hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) { | |
b5996f11 | 743 | ring->stats.err_pkt_len++; |
744 | dev_kfree_skb_any(skb); | |
745 | return -EFAULT; | |
746 | } | |
747 | ||
748 | if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) { | |
b5996f11 | 749 | ring->stats.l2_err++; |
750 | dev_kfree_skb_any(skb); | |
751 | return -EFAULT; | |
752 | } | |
753 | ||
754 | ring->stats.rx_pkts++; | |
755 | ring->stats.rx_bytes += skb->len; | |
756 | ||
862b3d20 S |
757 | /* indicate to upper stack if our hardware has already calculated |
758 | * the RX checksum | |
759 | */ | |
760 | hns_nic_rx_checksum(ring_data, skb, bnum_flag); | |
b5996f11 | 761 | |
762 | return 0; | |
763 | } | |
764 | ||
765 | static void | |
766 | hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count) | |
767 | { | |
768 | int i, ret; | |
769 | struct hnae_desc_cb res_cbs; | |
770 | struct hnae_desc_cb *desc_cb; | |
771 | struct hnae_ring *ring = ring_data->ring; | |
772 | struct net_device *ndev = ring_data->napi.dev; | |
773 | ||
774 | for (i = 0; i < cleand_count; i++) { | |
775 | desc_cb = &ring->desc_cb[ring->next_to_use]; | |
776 | if (desc_cb->reuse_flag) { | |
777 | ring->stats.reuse_pg_cnt++; | |
778 | hnae_reuse_buffer(ring, ring->next_to_use); | |
779 | } else { | |
780 | ret = hnae_reserve_buffer_map(ring, &res_cbs); | |
781 | if (ret) { | |
782 | ring->stats.sw_err_cnt++; | |
783 | netdev_err(ndev, "hnae reserve buffer map failed.\n"); | |
784 | break; | |
785 | } | |
786 | hnae_replace_buffer(ring, ring->next_to_use, &res_cbs); | |
787 | } | |
788 | ||
789 | ring_ptr_move_fw(ring, next_to_use); | |
790 | } | |
791 | ||
792 | wmb(); /* make all data has been write before submit */ | |
793 | writel_relaxed(i, ring->io_base + RCB_REG_HEAD); | |
794 | } | |
795 | ||
796 | /* return error number for error or number of desc left to take | |
797 | */ | |
798 | static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data, | |
799 | struct sk_buff *skb) | |
800 | { | |
801 | struct net_device *ndev = ring_data->napi.dev; | |
802 | ||
803 | skb->protocol = eth_type_trans(skb, ndev); | |
804 | (void)napi_gro_receive(&ring_data->napi, skb); | |
b5996f11 | 805 | } |
806 | ||
0e97cd4e | 807 | static int hns_desc_unused(struct hnae_ring *ring) |
808 | { | |
809 | int ntc = ring->next_to_clean; | |
810 | int ntu = ring->next_to_use; | |
811 | ||
812 | return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu; | |
813 | } | |
814 | ||
b5996f11 | 815 | static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data, |
816 | int budget, void *v) | |
817 | { | |
818 | struct hnae_ring *ring = ring_data->ring; | |
819 | struct sk_buff *skb; | |
34447271 | 820 | int num, bnum; |
b5996f11 | 821 | #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16 |
822 | int recv_pkts, recv_bds, clean_count, err; | |
0e97cd4e | 823 | int unused_count = hns_desc_unused(ring); |
b5996f11 | 824 | |
825 | num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); | |
826 | rmb(); /* make sure num taken effect before the other data is touched */ | |
827 | ||
828 | recv_pkts = 0, recv_bds = 0, clean_count = 0; | |
0e97cd4e | 829 | num -= unused_count; |
34447271 | 830 | |
b5996f11 | 831 | while (recv_pkts < budget && recv_bds < num) { |
6ba312eb | 832 | /* reuse or realloc buffers */ |
0e97cd4e | 833 | if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) { |
834 | hns_nic_alloc_rx_buffers(ring_data, | |
835 | clean_count + unused_count); | |
b5996f11 | 836 | clean_count = 0; |
0e97cd4e | 837 | unused_count = hns_desc_unused(ring); |
b5996f11 | 838 | } |
839 | ||
6ba312eb | 840 | /* poll one pkt */ |
b5996f11 | 841 | err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum); |
842 | if (unlikely(!skb)) /* this fault cannot be repaired */ | |
3a31b64e | 843 | goto out; |
b5996f11 | 844 | |
845 | recv_bds += bnum; | |
846 | clean_count += bnum; | |
847 | if (unlikely(err)) { /* do jump the err */ | |
848 | recv_pkts++; | |
849 | continue; | |
850 | } | |
851 | ||
852 | /* do update ip stack process*/ | |
853 | ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)( | |
854 | ring_data, skb); | |
855 | recv_pkts++; | |
856 | } | |
857 | ||
3a31b64e | 858 | out: |
13ac695e | 859 | /* make all data has been write before submit */ |
0e97cd4e | 860 | if (clean_count + unused_count > 0) |
861 | hns_nic_alloc_rx_buffers(ring_data, | |
862 | clean_count + unused_count); | |
13ac695e | 863 | |
b5996f11 | 864 | return recv_pkts; |
865 | } | |
866 | ||
36eedfde | 867 | static bool hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data) |
b5996f11 | 868 | { |
869 | struct hnae_ring *ring = ring_data->ring; | |
870 | int num = 0; | |
871 | ||
cee5add4 DH |
872 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0); |
873 | ||
b5996f11 | 874 | /* for hardware bug fixed */ |
875 | num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); | |
876 | ||
877 | if (num > 0) { | |
878 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( | |
879 | ring_data->ring, 1); | |
880 | ||
36eedfde | 881 | return false; |
882 | } else { | |
883 | return true; | |
b5996f11 | 884 | } |
885 | } | |
886 | ||
36eedfde | 887 | static bool hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data) |
cee5add4 DH |
888 | { |
889 | struct hnae_ring *ring = ring_data->ring; | |
36eedfde | 890 | int num; |
cee5add4 DH |
891 | |
892 | num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); | |
893 | ||
36eedfde | 894 | if (!num) |
895 | return true; | |
cee5add4 | 896 | else |
36eedfde | 897 | return false; |
cee5add4 DH |
898 | } |
899 | ||
b5996f11 | 900 | static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring, |
901 | int *bytes, int *pkts) | |
902 | { | |
903 | struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
904 | ||
905 | (*pkts) += (desc_cb->type == DESC_TYPE_SKB); | |
906 | (*bytes) += desc_cb->length; | |
907 | /* desc_cb will be cleaned, after hnae_free_buffer_detach*/ | |
908 | hnae_free_buffer_detach(ring, ring->next_to_clean); | |
909 | ||
910 | ring_ptr_move_fw(ring, next_to_clean); | |
911 | } | |
912 | ||
913 | static int is_valid_clean_head(struct hnae_ring *ring, int h) | |
914 | { | |
915 | int u = ring->next_to_use; | |
916 | int c = ring->next_to_clean; | |
917 | ||
918 | if (unlikely(h > ring->desc_num)) | |
919 | return 0; | |
920 | ||
921 | assert(u > 0 && u < ring->desc_num); | |
922 | assert(c > 0 && c < ring->desc_num); | |
923 | assert(u != c && h != c); /* must be checked before call this func */ | |
924 | ||
925 | return u > c ? (h > c && h <= u) : (h > c || h <= u); | |
926 | } | |
927 | ||
928 | /* netif_tx_lock will turn down the performance, set only when necessary */ | |
929 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
b4957ab0 S |
930 | #define NETIF_TX_LOCK(ring) spin_lock(&(ring)->lock) |
931 | #define NETIF_TX_UNLOCK(ring) spin_unlock(&(ring)->lock) | |
b5996f11 | 932 | #else |
f2aaed55 | 933 | #define NETIF_TX_LOCK(ring) |
934 | #define NETIF_TX_UNLOCK(ring) | |
b5996f11 | 935 | #endif |
f2aaed55 | 936 | |
b5996f11 | 937 | /* reclaim all desc in one budget |
938 | * return error or number of desc left | |
939 | */ | |
940 | static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data, | |
941 | int budget, void *v) | |
942 | { | |
943 | struct hnae_ring *ring = ring_data->ring; | |
944 | struct net_device *ndev = ring_data->napi.dev; | |
945 | struct netdev_queue *dev_queue; | |
946 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
947 | int head; | |
948 | int bytes, pkts; | |
949 | ||
f2aaed55 | 950 | NETIF_TX_LOCK(ring); |
b5996f11 | 951 | |
952 | head = readl_relaxed(ring->io_base + RCB_REG_HEAD); | |
953 | rmb(); /* make sure head is ready before touch any data */ | |
954 | ||
955 | if (is_ring_empty(ring) || head == ring->next_to_clean) { | |
f2aaed55 | 956 | NETIF_TX_UNLOCK(ring); |
b5996f11 | 957 | return 0; /* no data to poll */ |
958 | } | |
959 | ||
960 | if (!is_valid_clean_head(ring, head)) { | |
961 | netdev_err(ndev, "wrong head (%d, %d-%d)\n", head, | |
962 | ring->next_to_use, ring->next_to_clean); | |
963 | ring->stats.io_err_cnt++; | |
f2aaed55 | 964 | NETIF_TX_UNLOCK(ring); |
b5996f11 | 965 | return -EIO; |
966 | } | |
967 | ||
968 | bytes = 0; | |
969 | pkts = 0; | |
9cbe9fd5 | 970 | while (head != ring->next_to_clean) { |
b5996f11 | 971 | hns_nic_reclaim_one_desc(ring, &bytes, &pkts); |
9cbe9fd5 | 972 | /* issue prefetch for next Tx descriptor */ |
973 | prefetch(&ring->desc_cb[ring->next_to_clean]); | |
974 | } | |
b5996f11 | 975 | |
f2aaed55 | 976 | NETIF_TX_UNLOCK(ring); |
b5996f11 | 977 | |
978 | dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index); | |
979 | netdev_tx_completed_queue(dev_queue, pkts, bytes); | |
980 | ||
13ac695e S |
981 | if (unlikely(priv->link && !netif_carrier_ok(ndev))) |
982 | netif_carrier_on(ndev); | |
983 | ||
b5996f11 | 984 | if (unlikely(pkts && netif_carrier_ok(ndev) && |
985 | (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) { | |
986 | /* Make sure that anybody stopping the queue after this | |
987 | * sees the new next_to_clean. | |
988 | */ | |
989 | smp_mb(); | |
990 | if (netif_tx_queue_stopped(dev_queue) && | |
991 | !test_bit(NIC_STATE_DOWN, &priv->state)) { | |
992 | netif_tx_wake_queue(dev_queue); | |
993 | ring->stats.restart_queue++; | |
994 | } | |
995 | } | |
996 | return 0; | |
997 | } | |
998 | ||
36eedfde | 999 | static bool hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data) |
b5996f11 | 1000 | { |
1001 | struct hnae_ring *ring = ring_data->ring; | |
cee5add4 DH |
1002 | int head; |
1003 | ||
1004 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0); | |
1005 | ||
1006 | head = readl_relaxed(ring->io_base + RCB_REG_HEAD); | |
b5996f11 | 1007 | |
1008 | if (head != ring->next_to_clean) { | |
1009 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( | |
1010 | ring_data->ring, 1); | |
1011 | ||
36eedfde | 1012 | return false; |
1013 | } else { | |
1014 | return true; | |
b5996f11 | 1015 | } |
1016 | } | |
1017 | ||
36eedfde | 1018 | static bool hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data) |
cee5add4 DH |
1019 | { |
1020 | struct hnae_ring *ring = ring_data->ring; | |
1021 | int head = readl_relaxed(ring->io_base + RCB_REG_HEAD); | |
1022 | ||
1023 | if (head == ring->next_to_clean) | |
36eedfde | 1024 | return true; |
cee5add4 | 1025 | else |
36eedfde | 1026 | return false; |
cee5add4 DH |
1027 | } |
1028 | ||
b5996f11 | 1029 | static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data) |
1030 | { | |
1031 | struct hnae_ring *ring = ring_data->ring; | |
1032 | struct net_device *ndev = ring_data->napi.dev; | |
1033 | struct netdev_queue *dev_queue; | |
1034 | int head; | |
1035 | int bytes, pkts; | |
1036 | ||
f2aaed55 | 1037 | NETIF_TX_LOCK(ring); |
b5996f11 | 1038 | |
1039 | head = ring->next_to_use; /* ntu :soft setted ring position*/ | |
1040 | bytes = 0; | |
1041 | pkts = 0; | |
1042 | while (head != ring->next_to_clean) | |
1043 | hns_nic_reclaim_one_desc(ring, &bytes, &pkts); | |
1044 | ||
f2aaed55 | 1045 | NETIF_TX_UNLOCK(ring); |
b5996f11 | 1046 | |
1047 | dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index); | |
1048 | netdev_tx_reset_queue(dev_queue); | |
1049 | } | |
1050 | ||
1051 | static int hns_nic_common_poll(struct napi_struct *napi, int budget) | |
1052 | { | |
36eedfde | 1053 | int clean_complete = 0; |
b5996f11 | 1054 | struct hns_nic_ring_data *ring_data = |
1055 | container_of(napi, struct hns_nic_ring_data, napi); | |
36eedfde | 1056 | struct hnae_ring *ring = ring_data->ring; |
b5996f11 | 1057 | |
36eedfde | 1058 | try_again: |
1059 | clean_complete += ring_data->poll_one( | |
1060 | ring_data, budget - clean_complete, | |
1061 | ring_data->ex_process); | |
1062 | ||
1063 | if (clean_complete < budget) { | |
1064 | if (ring_data->fini_process(ring_data)) { | |
1065 | napi_complete(napi); | |
1066 | ring->q->handle->dev->ops->toggle_ring_irq(ring, 0); | |
1067 | } else { | |
1068 | goto try_again; | |
1069 | } | |
b5996f11 | 1070 | } |
1071 | ||
1072 | return clean_complete; | |
1073 | } | |
1074 | ||
1075 | static irqreturn_t hns_irq_handle(int irq, void *dev) | |
1076 | { | |
1077 | struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev; | |
1078 | ||
1079 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( | |
1080 | ring_data->ring, 1); | |
1081 | napi_schedule(&ring_data->napi); | |
1082 | ||
1083 | return IRQ_HANDLED; | |
1084 | } | |
1085 | ||
1086 | /** | |
1087 | *hns_nic_adjust_link - adjust net work mode by the phy stat or new param | |
1088 | *@ndev: net device | |
1089 | */ | |
1090 | static void hns_nic_adjust_link(struct net_device *ndev) | |
1091 | { | |
1092 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1093 | struct hnae_handle *h = priv->ae_handle; | |
bb7189dc QX |
1094 | int state = 1; |
1095 | ||
262b38cd | 1096 | if (ndev->phydev) { |
bb7189dc QX |
1097 | h->dev->ops->adjust_link(h, ndev->phydev->speed, |
1098 | ndev->phydev->duplex); | |
262b38cd | 1099 | state = ndev->phydev->link; |
bb7189dc QX |
1100 | } |
1101 | state = state && h->dev->ops->get_status(h); | |
b5996f11 | 1102 | |
bb7189dc QX |
1103 | if (state != priv->link) { |
1104 | if (state) { | |
1105 | netif_carrier_on(ndev); | |
1106 | netif_tx_wake_all_queues(ndev); | |
1107 | netdev_info(ndev, "link up\n"); | |
1108 | } else { | |
1109 | netif_carrier_off(ndev); | |
1110 | netdev_info(ndev, "link down\n"); | |
1111 | } | |
1112 | priv->link = state; | |
1113 | } | |
b5996f11 | 1114 | } |
1115 | ||
1116 | /** | |
1117 | *hns_nic_init_phy - init phy | |
1118 | *@ndev: net device | |
1119 | *@h: ae handle | |
1120 | * Return 0 on success, negative on failure | |
1121 | */ | |
1122 | int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h) | |
1123 | { | |
652d39b0 KY |
1124 | struct phy_device *phy_dev = h->phy_dev; |
1125 | int ret; | |
b5996f11 | 1126 | |
652d39b0 | 1127 | if (!h->phy_dev) |
b5996f11 | 1128 | return 0; |
1129 | ||
652d39b0 KY |
1130 | if (h->phy_if != PHY_INTERFACE_MODE_XGMII) { |
1131 | phy_dev->dev_flags = 0; | |
b5996f11 | 1132 | |
652d39b0 KY |
1133 | ret = phy_connect_direct(ndev, phy_dev, hns_nic_adjust_link, |
1134 | h->phy_if); | |
1135 | } else { | |
1136 | ret = phy_attach_direct(ndev, phy_dev, 0, h->phy_if); | |
1137 | } | |
1138 | if (unlikely(ret)) | |
1139 | return -ENODEV; | |
b5996f11 | 1140 | |
1141 | phy_dev->supported &= h->if_support; | |
1142 | phy_dev->advertising = phy_dev->supported; | |
1143 | ||
1144 | if (h->phy_if == PHY_INTERFACE_MODE_XGMII) | |
1145 | phy_dev->autoneg = false; | |
1146 | ||
b5996f11 | 1147 | return 0; |
1148 | } | |
1149 | ||
1150 | static int hns_nic_ring_open(struct net_device *netdev, int idx) | |
1151 | { | |
1152 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1153 | struct hnae_handle *h = priv->ae_handle; | |
1154 | ||
1155 | napi_enable(&priv->ring_data[idx].napi); | |
1156 | ||
1157 | enable_irq(priv->ring_data[idx].ring->irq); | |
1158 | h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0); | |
1159 | ||
1160 | return 0; | |
1161 | } | |
1162 | ||
1163 | static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p) | |
1164 | { | |
1165 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1166 | struct hnae_handle *h = priv->ae_handle; | |
1167 | struct sockaddr *mac_addr = p; | |
1168 | int ret; | |
1169 | ||
1170 | if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data)) | |
1171 | return -EADDRNOTAVAIL; | |
1172 | ||
1173 | ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data); | |
1174 | if (ret) { | |
1175 | netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret); | |
1176 | return ret; | |
1177 | } | |
1178 | ||
1179 | memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len); | |
1180 | ||
1181 | return 0; | |
1182 | } | |
1183 | ||
1184 | void hns_nic_update_stats(struct net_device *netdev) | |
1185 | { | |
1186 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1187 | struct hnae_handle *h = priv->ae_handle; | |
1188 | ||
1189 | h->dev->ops->update_stats(h, &netdev->stats); | |
1190 | } | |
1191 | ||
1192 | /* set mac addr if it is configed. or leave it to the AE driver */ | |
1193 | static void hns_init_mac_addr(struct net_device *ndev) | |
1194 | { | |
1195 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
b5996f11 | 1196 | |
6162928c | 1197 | if (!device_get_mac_address(priv->dev, ndev->dev_addr, ETH_ALEN)) { |
b5996f11 | 1198 | eth_hw_addr_random(ndev); |
1199 | dev_warn(priv->dev, "No valid mac, use random mac %pM", | |
1200 | ndev->dev_addr); | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | static void hns_nic_ring_close(struct net_device *netdev, int idx) | |
1205 | { | |
1206 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1207 | struct hnae_handle *h = priv->ae_handle; | |
1208 | ||
1209 | h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1); | |
1210 | disable_irq(priv->ring_data[idx].ring->irq); | |
1211 | ||
1212 | napi_disable(&priv->ring_data[idx].napi); | |
1213 | } | |
1214 | ||
ba2d0791 | 1215 | static int hns_nic_init_affinity_mask(int q_num, int ring_idx, |
1216 | struct hnae_ring *ring, cpumask_t *mask) | |
b5996f11 | 1217 | { |
b5996f11 | 1218 | int cpu; |
ff3edc9b | 1219 | |
ba2d0791 | 1220 | /* Diffrent irq banlance between 16core and 32core. |
1221 | * The cpu mask set by ring index according to the ring flag | |
1222 | * which indicate the ring is tx or rx. | |
1223 | */ | |
1224 | if (q_num == num_possible_cpus()) { | |
1225 | if (is_tx_ring(ring)) | |
1226 | cpu = ring_idx; | |
1227 | else | |
1228 | cpu = ring_idx - q_num; | |
13ac695e | 1229 | } else { |
ba2d0791 | 1230 | if (is_tx_ring(ring)) |
1231 | cpu = ring_idx * 2; | |
1232 | else | |
1233 | cpu = (ring_idx - q_num) * 2 + 1; | |
13ac695e | 1234 | } |
ff3edc9b | 1235 | |
ba2d0791 | 1236 | cpumask_clear(mask); |
1237 | cpumask_set_cpu(cpu, mask); | |
1238 | ||
1239 | return cpu; | |
13ac695e S |
1240 | } |
1241 | ||
1242 | static int hns_nic_init_irq(struct hns_nic_priv *priv) | |
1243 | { | |
1244 | struct hnae_handle *h = priv->ae_handle; | |
1245 | struct hns_nic_ring_data *rd; | |
1246 | int i; | |
1247 | int ret; | |
ba2d0791 | 1248 | int cpu; |
13ac695e | 1249 | |
b5996f11 | 1250 | for (i = 0; i < h->q_num * 2; i++) { |
1251 | rd = &priv->ring_data[i]; | |
1252 | ||
1253 | if (rd->ring->irq_init_flag == RCB_IRQ_INITED) | |
1254 | break; | |
1255 | ||
1256 | snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN, | |
1257 | "%s-%s%d", priv->netdev->name, | |
ba2d0791 | 1258 | (is_tx_ring(rd->ring) ? "tx" : "rx"), rd->queue_index); |
b5996f11 | 1259 | |
1260 | rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0'; | |
1261 | ||
1262 | ret = request_irq(rd->ring->irq, | |
1263 | hns_irq_handle, 0, rd->ring->ring_name, rd); | |
1264 | if (ret) { | |
1265 | netdev_err(priv->netdev, "request irq(%d) fail\n", | |
1266 | rd->ring->irq); | |
1267 | return ret; | |
1268 | } | |
1269 | disable_irq(rd->ring->irq); | |
ba2d0791 | 1270 | |
1271 | cpu = hns_nic_init_affinity_mask(h->q_num, i, | |
1272 | rd->ring, &rd->mask); | |
1273 | ||
1274 | if (cpu_online(cpu)) | |
1275 | irq_set_affinity_hint(rd->ring->irq, | |
1276 | &rd->mask); | |
1277 | ||
b5996f11 | 1278 | rd->ring->irq_init_flag = RCB_IRQ_INITED; |
b5996f11 | 1279 | } |
1280 | ||
1281 | return 0; | |
1282 | } | |
1283 | ||
1284 | static int hns_nic_net_up(struct net_device *ndev) | |
1285 | { | |
1286 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1287 | struct hnae_handle *h = priv->ae_handle; | |
454784d8 | 1288 | int i, j; |
b5996f11 | 1289 | int ret; |
1290 | ||
1291 | ret = hns_nic_init_irq(priv); | |
1292 | if (ret != 0) { | |
1293 | netdev_err(ndev, "hns init irq failed! ret=%d\n", ret); | |
1294 | return ret; | |
1295 | } | |
1296 | ||
1297 | for (i = 0; i < h->q_num * 2; i++) { | |
1298 | ret = hns_nic_ring_open(ndev, i); | |
1299 | if (ret) | |
1300 | goto out_has_some_queues; | |
1301 | } | |
1302 | ||
b5996f11 | 1303 | ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr); |
1304 | if (ret) | |
1305 | goto out_set_mac_addr_err; | |
1306 | ||
1307 | ret = h->dev->ops->start ? h->dev->ops->start(h) : 0; | |
1308 | if (ret) | |
1309 | goto out_start_err; | |
1310 | ||
262b38cd PR |
1311 | if (ndev->phydev) |
1312 | phy_start(ndev->phydev); | |
b5996f11 | 1313 | |
1314 | clear_bit(NIC_STATE_DOWN, &priv->state); | |
1315 | (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ); | |
1316 | ||
1317 | return 0; | |
1318 | ||
1319 | out_start_err: | |
1320 | netif_stop_queue(ndev); | |
1321 | out_set_mac_addr_err: | |
b5996f11 | 1322 | out_has_some_queues: |
1323 | for (j = i - 1; j >= 0; j--) | |
1324 | hns_nic_ring_close(ndev, j); | |
1325 | ||
1326 | set_bit(NIC_STATE_DOWN, &priv->state); | |
1327 | ||
1328 | return ret; | |
1329 | } | |
1330 | ||
1331 | static void hns_nic_net_down(struct net_device *ndev) | |
1332 | { | |
1333 | int i; | |
1334 | struct hnae_ae_ops *ops; | |
1335 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1336 | ||
1337 | if (test_and_set_bit(NIC_STATE_DOWN, &priv->state)) | |
1338 | return; | |
1339 | ||
1340 | (void)del_timer_sync(&priv->service_timer); | |
1341 | netif_tx_stop_all_queues(ndev); | |
1342 | netif_carrier_off(ndev); | |
1343 | netif_tx_disable(ndev); | |
1344 | priv->link = 0; | |
1345 | ||
262b38cd PR |
1346 | if (ndev->phydev) |
1347 | phy_stop(ndev->phydev); | |
b5996f11 | 1348 | |
1349 | ops = priv->ae_handle->dev->ops; | |
1350 | ||
1351 | if (ops->stop) | |
1352 | ops->stop(priv->ae_handle); | |
1353 | ||
1354 | netif_tx_stop_all_queues(ndev); | |
1355 | ||
1356 | for (i = priv->ae_handle->q_num - 1; i >= 0; i--) { | |
1357 | hns_nic_ring_close(ndev, i); | |
1358 | hns_nic_ring_close(ndev, i + priv->ae_handle->q_num); | |
1359 | ||
1360 | /* clean tx buffers*/ | |
1361 | hns_nic_tx_clr_all_bufs(priv->ring_data + i); | |
1362 | } | |
1363 | } | |
1364 | ||
1365 | void hns_nic_net_reset(struct net_device *ndev) | |
1366 | { | |
1367 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1368 | struct hnae_handle *handle = priv->ae_handle; | |
1369 | ||
1370 | while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state)) | |
1371 | usleep_range(1000, 2000); | |
1372 | ||
1373 | (void)hnae_reinit_handle(handle); | |
1374 | ||
1375 | clear_bit(NIC_STATE_RESETTING, &priv->state); | |
1376 | } | |
1377 | ||
1378 | void hns_nic_net_reinit(struct net_device *netdev) | |
1379 | { | |
1380 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
76b825ab | 1381 | enum hnae_port_type type = priv->ae_handle->port_type; |
b5996f11 | 1382 | |
860e9538 | 1383 | netif_trans_update(priv->netdev); |
b5996f11 | 1384 | while (test_and_set_bit(NIC_STATE_REINITING, &priv->state)) |
1385 | usleep_range(1000, 2000); | |
1386 | ||
1387 | hns_nic_net_down(netdev); | |
76b825ab LYS |
1388 | |
1389 | /* Only do hns_nic_net_reset in debug mode | |
1390 | * because of hardware limitation. | |
1391 | */ | |
1392 | if (type == HNAE_PORT_DEBUG) | |
1393 | hns_nic_net_reset(netdev); | |
1394 | ||
b5996f11 | 1395 | (void)hns_nic_net_up(netdev); |
1396 | clear_bit(NIC_STATE_REINITING, &priv->state); | |
1397 | } | |
1398 | ||
1399 | static int hns_nic_net_open(struct net_device *ndev) | |
1400 | { | |
1401 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1402 | struct hnae_handle *h = priv->ae_handle; | |
1403 | int ret; | |
1404 | ||
1405 | if (test_bit(NIC_STATE_TESTING, &priv->state)) | |
1406 | return -EBUSY; | |
1407 | ||
1408 | priv->link = 0; | |
1409 | netif_carrier_off(ndev); | |
1410 | ||
1411 | ret = netif_set_real_num_tx_queues(ndev, h->q_num); | |
1412 | if (ret < 0) { | |
1413 | netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n", | |
1414 | ret); | |
1415 | return ret; | |
1416 | } | |
1417 | ||
1418 | ret = netif_set_real_num_rx_queues(ndev, h->q_num); | |
1419 | if (ret < 0) { | |
1420 | netdev_err(ndev, | |
1421 | "netif_set_real_num_rx_queues fail, ret=%d!\n", ret); | |
1422 | return ret; | |
1423 | } | |
1424 | ||
1425 | ret = hns_nic_net_up(ndev); | |
1426 | if (ret) { | |
1427 | netdev_err(ndev, | |
1428 | "hns net up fail, ret=%d!\n", ret); | |
1429 | return ret; | |
1430 | } | |
1431 | ||
1432 | return 0; | |
1433 | } | |
1434 | ||
1435 | static int hns_nic_net_stop(struct net_device *ndev) | |
1436 | { | |
1437 | hns_nic_net_down(ndev); | |
1438 | ||
1439 | return 0; | |
1440 | } | |
1441 | ||
1442 | static void hns_tx_timeout_reset(struct hns_nic_priv *priv); | |
1443 | static void hns_nic_net_timeout(struct net_device *ndev) | |
1444 | { | |
1445 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1446 | ||
1447 | hns_tx_timeout_reset(priv); | |
1448 | } | |
1449 | ||
1450 | static int hns_nic_do_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
1451 | int cmd) | |
1452 | { | |
262b38cd | 1453 | struct phy_device *phy_dev = netdev->phydev; |
b5996f11 | 1454 | |
1455 | if (!netif_running(netdev)) | |
1456 | return -EINVAL; | |
1457 | ||
1458 | if (!phy_dev) | |
1459 | return -ENOTSUPP; | |
1460 | ||
1461 | return phy_mii_ioctl(phy_dev, ifr, cmd); | |
1462 | } | |
1463 | ||
1464 | /* use only for netconsole to poll with the device without interrupt */ | |
1465 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1466 | void hns_nic_poll_controller(struct net_device *ndev) | |
1467 | { | |
1468 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1469 | unsigned long flags; | |
1470 | int i; | |
1471 | ||
1472 | local_irq_save(flags); | |
1473 | for (i = 0; i < priv->ae_handle->q_num * 2; i++) | |
1474 | napi_schedule(&priv->ring_data[i].napi); | |
1475 | local_irq_restore(flags); | |
1476 | } | |
1477 | #endif | |
1478 | ||
1479 | static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb, | |
1480 | struct net_device *ndev) | |
1481 | { | |
1482 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
b5996f11 | 1483 | |
1484 | assert(skb->queue_mapping < ndev->ae_handle->q_num); | |
27463ad9 YL |
1485 | |
1486 | return hns_nic_net_xmit_hw(ndev, skb, | |
1487 | &tx_ring_data(priv, skb->queue_mapping)); | |
b5996f11 | 1488 | } |
1489 | ||
b29bd412 | 1490 | static void hns_nic_drop_rx_fetch(struct hns_nic_ring_data *ring_data, |
1491 | struct sk_buff *skb) | |
1492 | { | |
1493 | dev_kfree_skb_any(skb); | |
1494 | } | |
1495 | ||
1496 | #define HNS_LB_TX_RING 0 | |
1497 | static struct sk_buff *hns_assemble_skb(struct net_device *ndev) | |
1498 | { | |
1499 | struct sk_buff *skb; | |
1500 | struct ethhdr *ethhdr; | |
1501 | int frame_len; | |
1502 | ||
1503 | /* allocate test skb */ | |
1504 | skb = alloc_skb(64, GFP_KERNEL); | |
1505 | if (!skb) | |
1506 | return NULL; | |
1507 | ||
1508 | skb_put(skb, 64); | |
1509 | skb->dev = ndev; | |
1510 | memset(skb->data, 0xFF, skb->len); | |
1511 | ||
1512 | /* must be tcp/ip package */ | |
1513 | ethhdr = (struct ethhdr *)skb->data; | |
1514 | ethhdr->h_proto = htons(ETH_P_IP); | |
1515 | ||
1516 | frame_len = skb->len & (~1ul); | |
1517 | memset(&skb->data[frame_len / 2], 0xAA, | |
1518 | frame_len / 2 - 1); | |
1519 | ||
1520 | skb->queue_mapping = HNS_LB_TX_RING; | |
1521 | ||
1522 | return skb; | |
1523 | } | |
1524 | ||
1525 | static int hns_enable_serdes_lb(struct net_device *ndev) | |
1526 | { | |
1527 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1528 | struct hnae_handle *h = priv->ae_handle; | |
1529 | struct hnae_ae_ops *ops = h->dev->ops; | |
1530 | int speed, duplex; | |
1531 | int ret; | |
1532 | ||
1533 | ret = ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 1); | |
1534 | if (ret) | |
1535 | return ret; | |
1536 | ||
1537 | ret = ops->start ? ops->start(h) : 0; | |
1538 | if (ret) | |
1539 | return ret; | |
1540 | ||
1541 | /* link adjust duplex*/ | |
1542 | if (h->phy_if != PHY_INTERFACE_MODE_XGMII) | |
1543 | speed = 1000; | |
1544 | else | |
1545 | speed = 10000; | |
1546 | duplex = 1; | |
1547 | ||
1548 | ops->adjust_link(h, speed, duplex); | |
1549 | ||
1550 | /* wait h/w ready */ | |
1551 | mdelay(300); | |
1552 | ||
1553 | return 0; | |
1554 | } | |
1555 | ||
1556 | static void hns_disable_serdes_lb(struct net_device *ndev) | |
1557 | { | |
1558 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1559 | struct hnae_handle *h = priv->ae_handle; | |
1560 | struct hnae_ae_ops *ops = h->dev->ops; | |
1561 | ||
1562 | ops->stop(h); | |
1563 | ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 0); | |
1564 | } | |
1565 | ||
1566 | /** | |
1567 | *hns_nic_clear_all_rx_fetch - clear the chip fetched descriptions. The | |
1568 | *function as follows: | |
1569 | * 1. if one rx ring has found the page_offset is not equal 0 between head | |
1570 | * and tail, it means that the chip fetched the wrong descs for the ring | |
1571 | * which buffer size is 4096. | |
1572 | * 2. we set the chip serdes loopback and set rss indirection to the ring. | |
1573 | * 3. construct 64-bytes ip broadcast packages, wait the associated rx ring | |
1574 | * recieving all packages and it will fetch new descriptions. | |
1575 | * 4. recover to the original state. | |
1576 | * | |
1577 | *@ndev: net device | |
1578 | */ | |
1579 | static int hns_nic_clear_all_rx_fetch(struct net_device *ndev) | |
1580 | { | |
1581 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1582 | struct hnae_handle *h = priv->ae_handle; | |
1583 | struct hnae_ae_ops *ops = h->dev->ops; | |
1584 | struct hns_nic_ring_data *rd; | |
1585 | struct hnae_ring *ring; | |
1586 | struct sk_buff *skb; | |
1587 | u32 *org_indir; | |
1588 | u32 *cur_indir; | |
1589 | int indir_size; | |
1590 | int head, tail; | |
1591 | int fetch_num; | |
1592 | int i, j; | |
1593 | bool found; | |
1594 | int retry_times; | |
1595 | int ret = 0; | |
1596 | ||
1597 | /* alloc indir memory */ | |
1598 | indir_size = ops->get_rss_indir_size(h) * sizeof(*org_indir); | |
1599 | org_indir = kzalloc(indir_size, GFP_KERNEL); | |
1600 | if (!org_indir) | |
1601 | return -ENOMEM; | |
1602 | ||
1603 | /* store the orginal indirection */ | |
1604 | ops->get_rss(h, org_indir, NULL, NULL); | |
1605 | ||
1606 | cur_indir = kzalloc(indir_size, GFP_KERNEL); | |
1607 | if (!cur_indir) { | |
1608 | ret = -ENOMEM; | |
1609 | goto cur_indir_alloc_err; | |
1610 | } | |
1611 | ||
1612 | /* set loopback */ | |
1613 | if (hns_enable_serdes_lb(ndev)) { | |
1614 | ret = -EINVAL; | |
1615 | goto enable_serdes_lb_err; | |
1616 | } | |
1617 | ||
1618 | /* foreach every rx ring to clear fetch desc */ | |
1619 | for (i = 0; i < h->q_num; i++) { | |
1620 | ring = &h->qs[i]->rx_ring; | |
1621 | head = readl_relaxed(ring->io_base + RCB_REG_HEAD); | |
1622 | tail = readl_relaxed(ring->io_base + RCB_REG_TAIL); | |
1623 | found = false; | |
1624 | fetch_num = ring_dist(ring, head, tail); | |
1625 | ||
1626 | while (head != tail) { | |
1627 | if (ring->desc_cb[head].page_offset != 0) { | |
1628 | found = true; | |
1629 | break; | |
1630 | } | |
1631 | ||
1632 | head++; | |
1633 | if (head == ring->desc_num) | |
1634 | head = 0; | |
1635 | } | |
1636 | ||
1637 | if (found) { | |
1638 | for (j = 0; j < indir_size / sizeof(*org_indir); j++) | |
1639 | cur_indir[j] = i; | |
1640 | ops->set_rss(h, cur_indir, NULL, 0); | |
1641 | ||
1642 | for (j = 0; j < fetch_num; j++) { | |
1643 | /* alloc one skb and init */ | |
1644 | skb = hns_assemble_skb(ndev); | |
1645 | if (!skb) | |
1646 | goto out; | |
1647 | rd = &tx_ring_data(priv, skb->queue_mapping); | |
1648 | hns_nic_net_xmit_hw(ndev, skb, rd); | |
1649 | ||
1650 | retry_times = 0; | |
1651 | while (retry_times++ < 10) { | |
1652 | mdelay(10); | |
1653 | /* clean rx */ | |
1654 | rd = &rx_ring_data(priv, i); | |
1655 | if (rd->poll_one(rd, fetch_num, | |
1656 | hns_nic_drop_rx_fetch)) | |
1657 | break; | |
1658 | } | |
1659 | ||
1660 | retry_times = 0; | |
1661 | while (retry_times++ < 10) { | |
1662 | mdelay(10); | |
1663 | /* clean tx ring 0 send package */ | |
1664 | rd = &tx_ring_data(priv, | |
1665 | HNS_LB_TX_RING); | |
1666 | if (rd->poll_one(rd, fetch_num, NULL)) | |
1667 | break; | |
1668 | } | |
1669 | } | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | out: | |
1674 | /* restore everything */ | |
1675 | ops->set_rss(h, org_indir, NULL, 0); | |
1676 | hns_disable_serdes_lb(ndev); | |
1677 | enable_serdes_lb_err: | |
1678 | kfree(cur_indir); | |
1679 | cur_indir_alloc_err: | |
1680 | kfree(org_indir); | |
1681 | ||
1682 | return ret; | |
1683 | } | |
1684 | ||
b5996f11 | 1685 | static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu) |
1686 | { | |
1687 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1688 | struct hnae_handle *h = priv->ae_handle; | |
b29bd412 | 1689 | bool if_running = netif_running(ndev); |
b5996f11 | 1690 | int ret; |
1691 | ||
b29bd412 | 1692 | /* MTU < 68 is an error and causes problems on some kernels */ |
1693 | if (new_mtu < 68) | |
1694 | return -EINVAL; | |
1695 | ||
1696 | /* MTU no change */ | |
1697 | if (new_mtu == ndev->mtu) | |
1698 | return 0; | |
1699 | ||
b5996f11 | 1700 | if (!h->dev->ops->set_mtu) |
1701 | return -ENOTSUPP; | |
1702 | ||
b29bd412 | 1703 | if (if_running) { |
b5996f11 | 1704 | (void)hns_nic_net_stop(ndev); |
1705 | msleep(100); | |
b29bd412 | 1706 | } |
b5996f11 | 1707 | |
b29bd412 | 1708 | if (priv->enet_ver != AE_VERSION_1 && |
1709 | ndev->mtu <= BD_SIZE_2048_MAX_MTU && | |
1710 | new_mtu > BD_SIZE_2048_MAX_MTU) { | |
1711 | /* update desc */ | |
1712 | hnae_reinit_all_ring_desc(h); | |
b5996f11 | 1713 | |
b29bd412 | 1714 | /* clear the package which the chip has fetched */ |
1715 | ret = hns_nic_clear_all_rx_fetch(ndev); | |
1716 | ||
1717 | /* the page offset must be consist with desc */ | |
1718 | hnae_reinit_all_ring_page_off(h); | |
1719 | ||
1720 | if (ret) { | |
1721 | netdev_err(ndev, "clear the fetched desc fail\n"); | |
1722 | goto out; | |
1723 | } | |
1724 | } | |
1725 | ||
1726 | ret = h->dev->ops->set_mtu(h, new_mtu); | |
1727 | if (ret) { | |
1728 | netdev_err(ndev, "set mtu fail, return value %d\n", | |
1729 | ret); | |
1730 | goto out; | |
b5996f11 | 1731 | } |
1732 | ||
b29bd412 | 1733 | /* finally, set new mtu to netdevice */ |
1734 | ndev->mtu = new_mtu; | |
1735 | ||
1736 | out: | |
1737 | if (if_running) { | |
1738 | if (hns_nic_net_open(ndev)) { | |
1739 | netdev_err(ndev, "hns net open fail\n"); | |
1740 | ret = -EINVAL; | |
1741 | } | |
1742 | } | |
b5996f11 | 1743 | |
1744 | return ret; | |
1745 | } | |
1746 | ||
38f616da S |
1747 | static int hns_nic_set_features(struct net_device *netdev, |
1748 | netdev_features_t features) | |
1749 | { | |
1750 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
38f616da S |
1751 | |
1752 | switch (priv->enet_ver) { | |
1753 | case AE_VERSION_1: | |
1754 | if (features & (NETIF_F_TSO | NETIF_F_TSO6)) | |
1755 | netdev_info(netdev, "enet v1 do not support tso!\n"); | |
1756 | break; | |
1757 | default: | |
1758 | if (features & (NETIF_F_TSO | NETIF_F_TSO6)) { | |
1759 | priv->ops.fill_desc = fill_tso_desc; | |
1760 | priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso; | |
1761 | /* The chip only support 7*4096 */ | |
1762 | netif_set_gso_max_size(netdev, 7 * 4096); | |
38f616da S |
1763 | } else { |
1764 | priv->ops.fill_desc = fill_v2_desc; | |
1765 | priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx; | |
38f616da S |
1766 | } |
1767 | break; | |
1768 | } | |
1769 | netdev->features = features; | |
1770 | return 0; | |
1771 | } | |
1772 | ||
1773 | static netdev_features_t hns_nic_fix_features( | |
1774 | struct net_device *netdev, netdev_features_t features) | |
1775 | { | |
1776 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1777 | ||
1778 | switch (priv->enet_ver) { | |
1779 | case AE_VERSION_1: | |
1780 | features &= ~(NETIF_F_TSO | NETIF_F_TSO6 | | |
1781 | NETIF_F_HW_VLAN_CTAG_FILTER); | |
1782 | break; | |
1783 | default: | |
1784 | break; | |
1785 | } | |
1786 | return features; | |
1787 | } | |
1788 | ||
66355f52 KY |
1789 | static int hns_nic_uc_sync(struct net_device *netdev, const unsigned char *addr) |
1790 | { | |
1791 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1792 | struct hnae_handle *h = priv->ae_handle; | |
1793 | ||
1794 | if (h->dev->ops->add_uc_addr) | |
1795 | return h->dev->ops->add_uc_addr(h, addr); | |
1796 | ||
1797 | return 0; | |
1798 | } | |
1799 | ||
1800 | static int hns_nic_uc_unsync(struct net_device *netdev, | |
1801 | const unsigned char *addr) | |
1802 | { | |
1803 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1804 | struct hnae_handle *h = priv->ae_handle; | |
1805 | ||
1806 | if (h->dev->ops->rm_uc_addr) | |
1807 | return h->dev->ops->rm_uc_addr(h, addr); | |
1808 | ||
1809 | return 0; | |
1810 | } | |
1811 | ||
b5996f11 | 1812 | /** |
1813 | * nic_set_multicast_list - set mutl mac address | |
1814 | * @netdev: net device | |
1815 | * @p: mac address | |
1816 | * | |
1817 | * return void | |
1818 | */ | |
1819 | void hns_set_multicast_list(struct net_device *ndev) | |
1820 | { | |
1821 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1822 | struct hnae_handle *h = priv->ae_handle; | |
1823 | struct netdev_hw_addr *ha = NULL; | |
1824 | ||
1825 | if (!h) { | |
1826 | netdev_err(ndev, "hnae handle is null\n"); | |
1827 | return; | |
1828 | } | |
1829 | ||
ec2cafe6 KY |
1830 | if (h->dev->ops->clr_mc_addr) |
1831 | if (h->dev->ops->clr_mc_addr(h)) | |
1832 | netdev_err(ndev, "clear multicast address fail\n"); | |
1833 | ||
b5996f11 | 1834 | if (h->dev->ops->set_mc_addr) { |
1835 | netdev_for_each_mc_addr(ha, ndev) | |
1836 | if (h->dev->ops->set_mc_addr(h, ha->addr)) | |
1837 | netdev_err(ndev, "set multicast fail\n"); | |
1838 | } | |
1839 | } | |
1840 | ||
4568637f | 1841 | void hns_nic_set_rx_mode(struct net_device *ndev) |
1842 | { | |
1843 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1844 | struct hnae_handle *h = priv->ae_handle; | |
1845 | ||
1846 | if (h->dev->ops->set_promisc_mode) { | |
1847 | if (ndev->flags & IFF_PROMISC) | |
1848 | h->dev->ops->set_promisc_mode(h, 1); | |
1849 | else | |
1850 | h->dev->ops->set_promisc_mode(h, 0); | |
1851 | } | |
1852 | ||
1853 | hns_set_multicast_list(ndev); | |
66355f52 KY |
1854 | |
1855 | if (__dev_uc_sync(ndev, hns_nic_uc_sync, hns_nic_uc_unsync)) | |
1856 | netdev_err(ndev, "sync uc address fail\n"); | |
4568637f | 1857 | } |
1858 | ||
bc1f4470 | 1859 | static void hns_nic_get_stats64(struct net_device *ndev, |
1860 | struct rtnl_link_stats64 *stats) | |
b5996f11 | 1861 | { |
1862 | int idx = 0; | |
1863 | u64 tx_bytes = 0; | |
1864 | u64 rx_bytes = 0; | |
1865 | u64 tx_pkts = 0; | |
1866 | u64 rx_pkts = 0; | |
1867 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1868 | struct hnae_handle *h = priv->ae_handle; | |
1869 | ||
1870 | for (idx = 0; idx < h->q_num; idx++) { | |
1871 | tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes; | |
1872 | tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts; | |
1873 | rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes; | |
1874 | rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts; | |
1875 | } | |
1876 | ||
1877 | stats->tx_bytes = tx_bytes; | |
1878 | stats->tx_packets = tx_pkts; | |
1879 | stats->rx_bytes = rx_bytes; | |
1880 | stats->rx_packets = rx_pkts; | |
1881 | ||
1882 | stats->rx_errors = ndev->stats.rx_errors; | |
1883 | stats->multicast = ndev->stats.multicast; | |
1884 | stats->rx_length_errors = ndev->stats.rx_length_errors; | |
1885 | stats->rx_crc_errors = ndev->stats.rx_crc_errors; | |
1886 | stats->rx_missed_errors = ndev->stats.rx_missed_errors; | |
1887 | ||
1888 | stats->tx_errors = ndev->stats.tx_errors; | |
1889 | stats->rx_dropped = ndev->stats.rx_dropped; | |
1890 | stats->tx_dropped = ndev->stats.tx_dropped; | |
1891 | stats->collisions = ndev->stats.collisions; | |
1892 | stats->rx_over_errors = ndev->stats.rx_over_errors; | |
1893 | stats->rx_frame_errors = ndev->stats.rx_frame_errors; | |
1894 | stats->rx_fifo_errors = ndev->stats.rx_fifo_errors; | |
1895 | stats->tx_aborted_errors = ndev->stats.tx_aborted_errors; | |
1896 | stats->tx_carrier_errors = ndev->stats.tx_carrier_errors; | |
1897 | stats->tx_fifo_errors = ndev->stats.tx_fifo_errors; | |
1898 | stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors; | |
1899 | stats->tx_window_errors = ndev->stats.tx_window_errors; | |
1900 | stats->rx_compressed = ndev->stats.rx_compressed; | |
1901 | stats->tx_compressed = ndev->stats.tx_compressed; | |
b5996f11 | 1902 | } |
1903 | ||
2162a4a1 DH |
1904 | static u16 |
1905 | hns_nic_select_queue(struct net_device *ndev, struct sk_buff *skb, | |
1906 | void *accel_priv, select_queue_fallback_t fallback) | |
1907 | { | |
1908 | struct ethhdr *eth_hdr = (struct ethhdr *)skb->data; | |
1909 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1910 | ||
1911 | /* fix hardware broadcast/multicast packets queue loopback */ | |
1912 | if (!AE_IS_VER1(priv->enet_ver) && | |
1913 | is_multicast_ether_addr(eth_hdr->h_dest)) | |
1914 | return 0; | |
1915 | else | |
1916 | return fallback(ndev, skb); | |
1917 | } | |
1918 | ||
b5996f11 | 1919 | static const struct net_device_ops hns_nic_netdev_ops = { |
1920 | .ndo_open = hns_nic_net_open, | |
1921 | .ndo_stop = hns_nic_net_stop, | |
1922 | .ndo_start_xmit = hns_nic_net_xmit, | |
1923 | .ndo_tx_timeout = hns_nic_net_timeout, | |
1924 | .ndo_set_mac_address = hns_nic_net_set_mac_address, | |
1925 | .ndo_change_mtu = hns_nic_change_mtu, | |
1926 | .ndo_do_ioctl = hns_nic_do_ioctl, | |
38f616da S |
1927 | .ndo_set_features = hns_nic_set_features, |
1928 | .ndo_fix_features = hns_nic_fix_features, | |
b5996f11 | 1929 | .ndo_get_stats64 = hns_nic_get_stats64, |
1930 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1931 | .ndo_poll_controller = hns_nic_poll_controller, | |
1932 | #endif | |
4568637f | 1933 | .ndo_set_rx_mode = hns_nic_set_rx_mode, |
2162a4a1 | 1934 | .ndo_select_queue = hns_nic_select_queue, |
b5996f11 | 1935 | }; |
1936 | ||
1937 | static void hns_nic_update_link_status(struct net_device *netdev) | |
1938 | { | |
1939 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1940 | ||
1941 | struct hnae_handle *h = priv->ae_handle; | |
b5996f11 | 1942 | |
bb7189dc QX |
1943 | if (h->phy_dev) { |
1944 | if (h->phy_if != PHY_INTERFACE_MODE_XGMII) | |
1945 | return; | |
b5996f11 | 1946 | |
bb7189dc | 1947 | (void)genphy_read_status(h->phy_dev); |
b5996f11 | 1948 | } |
bb7189dc | 1949 | hns_nic_adjust_link(netdev); |
b5996f11 | 1950 | } |
1951 | ||
1952 | /* for dumping key regs*/ | |
1953 | static void hns_nic_dump(struct hns_nic_priv *priv) | |
1954 | { | |
1955 | struct hnae_handle *h = priv->ae_handle; | |
1956 | struct hnae_ae_ops *ops = h->dev->ops; | |
1957 | u32 *data, reg_num, i; | |
1958 | ||
1959 | if (ops->get_regs_len && ops->get_regs) { | |
1960 | reg_num = ops->get_regs_len(priv->ae_handle); | |
1961 | reg_num = (reg_num + 3ul) & ~3ul; | |
1962 | data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL); | |
1963 | if (data) { | |
1964 | ops->get_regs(priv->ae_handle, data); | |
1965 | for (i = 0; i < reg_num; i += 4) | |
1966 | pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n", | |
1967 | i, data[i], data[i + 1], | |
1968 | data[i + 2], data[i + 3]); | |
1969 | kfree(data); | |
1970 | } | |
1971 | } | |
1972 | ||
1973 | for (i = 0; i < h->q_num; i++) { | |
1974 | pr_info("tx_queue%d_next_to_clean:%d\n", | |
1975 | i, h->qs[i]->tx_ring.next_to_clean); | |
1976 | pr_info("tx_queue%d_next_to_use:%d\n", | |
1977 | i, h->qs[i]->tx_ring.next_to_use); | |
1978 | pr_info("rx_queue%d_next_to_clean:%d\n", | |
1979 | i, h->qs[i]->rx_ring.next_to_clean); | |
1980 | pr_info("rx_queue%d_next_to_use:%d\n", | |
1981 | i, h->qs[i]->rx_ring.next_to_use); | |
1982 | } | |
1983 | } | |
1984 | ||
f7211729 | 1985 | /* for resetting subtask */ |
b5996f11 | 1986 | static void hns_nic_reset_subtask(struct hns_nic_priv *priv) |
1987 | { | |
1988 | enum hnae_port_type type = priv->ae_handle->port_type; | |
1989 | ||
1990 | if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state)) | |
1991 | return; | |
1992 | clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state); | |
1993 | ||
1994 | /* If we're already down, removing or resetting, just bail */ | |
1995 | if (test_bit(NIC_STATE_DOWN, &priv->state) || | |
1996 | test_bit(NIC_STATE_REMOVING, &priv->state) || | |
1997 | test_bit(NIC_STATE_RESETTING, &priv->state)) | |
1998 | return; | |
1999 | ||
2000 | hns_nic_dump(priv); | |
13ac695e S |
2001 | netdev_info(priv->netdev, "try to reset %s port!\n", |
2002 | (type == HNAE_PORT_DEBUG ? "debug" : "service")); | |
b5996f11 | 2003 | |
2004 | rtnl_lock(); | |
90a505b9 | 2005 | /* put off any impending NetWatchDogTimeout */ |
860e9538 | 2006 | netif_trans_update(priv->netdev); |
76b825ab | 2007 | hns_nic_net_reinit(priv->netdev); |
90a505b9 | 2008 | |
b5996f11 | 2009 | rtnl_unlock(); |
2010 | } | |
2011 | ||
2012 | /* for doing service complete*/ | |
2013 | static void hns_nic_service_event_complete(struct hns_nic_priv *priv) | |
2014 | { | |
13ac695e | 2015 | WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state)); |
b4957ab0 | 2016 | /* make sure to commit the things */ |
b5996f11 | 2017 | smp_mb__before_atomic(); |
2018 | clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state); | |
2019 | } | |
2020 | ||
2021 | static void hns_nic_service_task(struct work_struct *work) | |
2022 | { | |
2023 | struct hns_nic_priv *priv | |
2024 | = container_of(work, struct hns_nic_priv, service_task); | |
2025 | struct hnae_handle *h = priv->ae_handle; | |
2026 | ||
2027 | hns_nic_update_link_status(priv->netdev); | |
2028 | h->dev->ops->update_led_status(h); | |
2029 | hns_nic_update_stats(priv->netdev); | |
2030 | ||
2031 | hns_nic_reset_subtask(priv); | |
2032 | hns_nic_service_event_complete(priv); | |
2033 | } | |
2034 | ||
2035 | static void hns_nic_task_schedule(struct hns_nic_priv *priv) | |
2036 | { | |
2037 | if (!test_bit(NIC_STATE_DOWN, &priv->state) && | |
2038 | !test_bit(NIC_STATE_REMOVING, &priv->state) && | |
2039 | !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state)) | |
2040 | (void)schedule_work(&priv->service_task); | |
2041 | } | |
2042 | ||
2043 | static void hns_nic_service_timer(unsigned long data) | |
2044 | { | |
2045 | struct hns_nic_priv *priv = (struct hns_nic_priv *)data; | |
2046 | ||
2047 | (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ); | |
2048 | ||
2049 | hns_nic_task_schedule(priv); | |
2050 | } | |
2051 | ||
2052 | /** | |
2053 | * hns_tx_timeout_reset - initiate reset due to Tx timeout | |
2054 | * @priv: driver private struct | |
2055 | **/ | |
2056 | static void hns_tx_timeout_reset(struct hns_nic_priv *priv) | |
2057 | { | |
2058 | /* Do the reset outside of interrupt context */ | |
2059 | if (!test_bit(NIC_STATE_DOWN, &priv->state)) { | |
2060 | set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state); | |
2061 | netdev_warn(priv->netdev, | |
2062 | "initiating reset due to tx timeout(%llu,0x%lx)\n", | |
2063 | priv->tx_timeout_count, priv->state); | |
2064 | priv->tx_timeout_count++; | |
2065 | hns_nic_task_schedule(priv); | |
2066 | } | |
2067 | } | |
2068 | ||
2069 | static int hns_nic_init_ring_data(struct hns_nic_priv *priv) | |
2070 | { | |
2071 | struct hnae_handle *h = priv->ae_handle; | |
2072 | struct hns_nic_ring_data *rd; | |
4b34aa41 | 2073 | bool is_ver1 = AE_IS_VER1(priv->enet_ver); |
b5996f11 | 2074 | int i; |
2075 | ||
2076 | if (h->q_num > NIC_MAX_Q_PER_VF) { | |
2077 | netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num); | |
2078 | return -EINVAL; | |
2079 | } | |
2080 | ||
2081 | priv->ring_data = kzalloc(h->q_num * sizeof(*priv->ring_data) * 2, | |
2082 | GFP_KERNEL); | |
2083 | if (!priv->ring_data) | |
2084 | return -ENOMEM; | |
2085 | ||
2086 | for (i = 0; i < h->q_num; i++) { | |
2087 | rd = &priv->ring_data[i]; | |
2088 | rd->queue_index = i; | |
2089 | rd->ring = &h->qs[i]->tx_ring; | |
2090 | rd->poll_one = hns_nic_tx_poll_one; | |
cee5add4 DH |
2091 | rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro : |
2092 | hns_nic_tx_fini_pro_v2; | |
b5996f11 | 2093 | |
2094 | netif_napi_add(priv->netdev, &rd->napi, | |
2095 | hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM); | |
2096 | rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED; | |
2097 | } | |
2098 | for (i = h->q_num; i < h->q_num * 2; i++) { | |
2099 | rd = &priv->ring_data[i]; | |
2100 | rd->queue_index = i - h->q_num; | |
2101 | rd->ring = &h->qs[i - h->q_num]->rx_ring; | |
2102 | rd->poll_one = hns_nic_rx_poll_one; | |
2103 | rd->ex_process = hns_nic_rx_up_pro; | |
cee5add4 DH |
2104 | rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro : |
2105 | hns_nic_rx_fini_pro_v2; | |
b5996f11 | 2106 | |
2107 | netif_napi_add(priv->netdev, &rd->napi, | |
2108 | hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM); | |
2109 | rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED; | |
2110 | } | |
2111 | ||
2112 | return 0; | |
2113 | } | |
2114 | ||
2115 | static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv) | |
2116 | { | |
2117 | struct hnae_handle *h = priv->ae_handle; | |
2118 | int i; | |
2119 | ||
2120 | for (i = 0; i < h->q_num * 2; i++) { | |
2121 | netif_napi_del(&priv->ring_data[i].napi); | |
2122 | if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) { | |
13ac695e S |
2123 | (void)irq_set_affinity_hint( |
2124 | priv->ring_data[i].ring->irq, | |
2125 | NULL); | |
b5996f11 | 2126 | free_irq(priv->ring_data[i].ring->irq, |
2127 | &priv->ring_data[i]); | |
2128 | } | |
2129 | ||
2130 | priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED; | |
2131 | } | |
2132 | kfree(priv->ring_data); | |
2133 | } | |
2134 | ||
13ac695e S |
2135 | static void hns_nic_set_priv_ops(struct net_device *netdev) |
2136 | { | |
2137 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
64353af6 | 2138 | struct hnae_handle *h = priv->ae_handle; |
13ac695e S |
2139 | |
2140 | if (AE_IS_VER1(priv->enet_ver)) { | |
2141 | priv->ops.fill_desc = fill_desc; | |
2142 | priv->ops.get_rxd_bnum = get_rx_desc_bnum; | |
2143 | priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx; | |
2144 | } else { | |
2145 | priv->ops.get_rxd_bnum = get_v2rx_desc_bnum; | |
64353af6 S |
2146 | if ((netdev->features & NETIF_F_TSO) || |
2147 | (netdev->features & NETIF_F_TSO6)) { | |
2148 | priv->ops.fill_desc = fill_tso_desc; | |
2149 | priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso; | |
2150 | /* This chip only support 7*4096 */ | |
2151 | netif_set_gso_max_size(netdev, 7 * 4096); | |
64353af6 S |
2152 | } else { |
2153 | priv->ops.fill_desc = fill_v2_desc; | |
2154 | priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx; | |
2155 | } | |
6fe27464 DH |
2156 | /* enable tso when init |
2157 | * control tso on/off through TSE bit in bd | |
2158 | */ | |
2159 | h->dev->ops->set_tso_stats(h, 1); | |
13ac695e S |
2160 | } |
2161 | } | |
2162 | ||
b5996f11 | 2163 | static int hns_nic_try_get_ae(struct net_device *ndev) |
2164 | { | |
2165 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
2166 | struct hnae_handle *h; | |
2167 | int ret; | |
2168 | ||
2169 | h = hnae_get_handle(&priv->netdev->dev, | |
7b2acae6 | 2170 | priv->fwnode, priv->port_id, NULL); |
b5996f11 | 2171 | if (IS_ERR_OR_NULL(h)) { |
daa8cfd9 | 2172 | ret = -ENODEV; |
b5996f11 | 2173 | dev_dbg(priv->dev, "has not handle, register notifier!\n"); |
2174 | goto out; | |
2175 | } | |
2176 | priv->ae_handle = h; | |
2177 | ||
2178 | ret = hns_nic_init_phy(ndev, h); | |
2179 | if (ret) { | |
2180 | dev_err(priv->dev, "probe phy device fail!\n"); | |
2181 | goto out_init_phy; | |
2182 | } | |
2183 | ||
2184 | ret = hns_nic_init_ring_data(priv); | |
2185 | if (ret) { | |
2186 | ret = -ENOMEM; | |
2187 | goto out_init_ring_data; | |
2188 | } | |
2189 | ||
13ac695e S |
2190 | hns_nic_set_priv_ops(ndev); |
2191 | ||
b5996f11 | 2192 | ret = register_netdev(ndev); |
2193 | if (ret) { | |
2194 | dev_err(priv->dev, "probe register netdev fail!\n"); | |
2195 | goto out_reg_ndev_fail; | |
2196 | } | |
2197 | return 0; | |
2198 | ||
2199 | out_reg_ndev_fail: | |
2200 | hns_nic_uninit_ring_data(priv); | |
2201 | priv->ring_data = NULL; | |
2202 | out_init_phy: | |
2203 | out_init_ring_data: | |
2204 | hnae_put_handle(priv->ae_handle); | |
2205 | priv->ae_handle = NULL; | |
2206 | out: | |
2207 | return ret; | |
2208 | } | |
2209 | ||
2210 | static int hns_nic_notifier_action(struct notifier_block *nb, | |
2211 | unsigned long action, void *data) | |
2212 | { | |
2213 | struct hns_nic_priv *priv = | |
2214 | container_of(nb, struct hns_nic_priv, notifier_block); | |
2215 | ||
2216 | assert(action == HNAE_AE_REGISTER); | |
2217 | ||
2218 | if (!hns_nic_try_get_ae(priv->netdev)) { | |
2219 | hnae_unregister_notifier(&priv->notifier_block); | |
2220 | priv->notifier_block.notifier_call = NULL; | |
2221 | } | |
2222 | return 0; | |
2223 | } | |
2224 | ||
2225 | static int hns_nic_dev_probe(struct platform_device *pdev) | |
2226 | { | |
2227 | struct device *dev = &pdev->dev; | |
2228 | struct net_device *ndev; | |
2229 | struct hns_nic_priv *priv; | |
406adee9 | 2230 | u32 port_id; |
b5996f11 | 2231 | int ret; |
2232 | ||
2233 | ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF); | |
2234 | if (!ndev) | |
2235 | return -ENOMEM; | |
2236 | ||
2237 | platform_set_drvdata(pdev, ndev); | |
2238 | ||
2239 | priv = netdev_priv(ndev); | |
2240 | priv->dev = dev; | |
2241 | priv->netdev = ndev; | |
2242 | ||
63434888 KY |
2243 | if (dev_of_node(dev)) { |
2244 | struct device_node *ae_node; | |
b5996f11 | 2245 | |
63434888 KY |
2246 | if (of_device_is_compatible(dev->of_node, |
2247 | "hisilicon,hns-nic-v1")) | |
2248 | priv->enet_ver = AE_VERSION_1; | |
2249 | else | |
2250 | priv->enet_ver = AE_VERSION_2; | |
2251 | ||
2252 | ae_node = of_parse_phandle(dev->of_node, "ae-handle", 0); | |
2253 | if (IS_ERR_OR_NULL(ae_node)) { | |
2254 | ret = PTR_ERR(ae_node); | |
2255 | dev_err(dev, "not find ae-handle\n"); | |
2256 | goto out_read_prop_fail; | |
2257 | } | |
2258 | priv->fwnode = &ae_node->fwnode; | |
2259 | } else if (is_acpi_node(dev->fwnode)) { | |
2260 | struct acpi_reference_args args; | |
2261 | ||
2262 | if (acpi_dev_found(hns_enet_acpi_match[0].id)) | |
2263 | priv->enet_ver = AE_VERSION_1; | |
2264 | else if (acpi_dev_found(hns_enet_acpi_match[1].id)) | |
2265 | priv->enet_ver = AE_VERSION_2; | |
2266 | else | |
2267 | return -ENXIO; | |
2268 | ||
2269 | /* try to find port-idx-in-ae first */ | |
2270 | ret = acpi_node_get_property_reference(dev->fwnode, | |
2271 | "ae-handle", 0, &args); | |
2272 | if (ret) { | |
2273 | dev_err(dev, "not find ae-handle\n"); | |
2274 | goto out_read_prop_fail; | |
2275 | } | |
2276 | priv->fwnode = acpi_fwnode_handle(args.adev); | |
2277 | } else { | |
2278 | dev_err(dev, "cannot read cfg data from OF or acpi\n"); | |
2279 | return -ENXIO; | |
48189d6a | 2280 | } |
7b2acae6 | 2281 | |
6162928c | 2282 | ret = device_property_read_u32(dev, "port-idx-in-ae", &port_id); |
406adee9 YZZ |
2283 | if (ret) { |
2284 | /* only for old code compatible */ | |
6162928c | 2285 | ret = device_property_read_u32(dev, "port-id", &port_id); |
406adee9 YZZ |
2286 | if (ret) |
2287 | goto out_read_prop_fail; | |
2288 | /* for old dts, we need to caculate the port offset */ | |
2289 | port_id = port_id < HNS_SRV_OFFSET ? port_id + HNS_DEBUG_OFFSET | |
2290 | : port_id - HNS_SRV_OFFSET; | |
2291 | } | |
2292 | priv->port_id = port_id; | |
b5996f11 | 2293 | |
2294 | hns_init_mac_addr(ndev); | |
2295 | ||
2296 | ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT; | |
2297 | ndev->priv_flags |= IFF_UNICAST_FLT; | |
2298 | ndev->netdev_ops = &hns_nic_netdev_ops; | |
2299 | hns_ethtool_set_ops(ndev); | |
13ac695e | 2300 | |
b5996f11 | 2301 | ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
2302 | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | | |
2303 | NETIF_F_GRO; | |
2304 | ndev->vlan_features |= | |
2305 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM; | |
2306 | ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO; | |
2307 | ||
44770e11 JW |
2308 | /* MTU range: 68 - 9578 (v1) or 9706 (v2) */ |
2309 | ndev->min_mtu = MAC_MIN_MTU; | |
13ac695e S |
2310 | switch (priv->enet_ver) { |
2311 | case AE_VERSION_2: | |
64353af6 | 2312 | ndev->features |= NETIF_F_TSO | NETIF_F_TSO6; |
13ac695e S |
2313 | ndev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
2314 | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | | |
64353af6 | 2315 | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6; |
44770e11 JW |
2316 | ndev->max_mtu = MAC_MAX_MTU_V2 - |
2317 | (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); | |
13ac695e S |
2318 | break; |
2319 | default: | |
44770e11 JW |
2320 | ndev->max_mtu = MAC_MAX_MTU - |
2321 | (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); | |
13ac695e S |
2322 | break; |
2323 | } | |
2324 | ||
b5996f11 | 2325 | SET_NETDEV_DEV(ndev, dev); |
2326 | ||
2327 | if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64))) | |
2328 | dev_dbg(dev, "set mask to 64bit\n"); | |
2329 | else | |
39c94417 | 2330 | dev_err(dev, "set mask to 64bit fail!\n"); |
b5996f11 | 2331 | |
2332 | /* carrier off reporting is important to ethtool even BEFORE open */ | |
2333 | netif_carrier_off(ndev); | |
2334 | ||
2335 | setup_timer(&priv->service_timer, hns_nic_service_timer, | |
2336 | (unsigned long)priv); | |
2337 | INIT_WORK(&priv->service_task, hns_nic_service_task); | |
2338 | ||
2339 | set_bit(NIC_STATE_SERVICE_INITED, &priv->state); | |
2340 | clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state); | |
2341 | set_bit(NIC_STATE_DOWN, &priv->state); | |
2342 | ||
2343 | if (hns_nic_try_get_ae(priv->netdev)) { | |
2344 | priv->notifier_block.notifier_call = hns_nic_notifier_action; | |
2345 | ret = hnae_register_notifier(&priv->notifier_block); | |
2346 | if (ret) { | |
2347 | dev_err(dev, "register notifier fail!\n"); | |
2348 | goto out_notify_fail; | |
2349 | } | |
2350 | dev_dbg(dev, "has not handle, register notifier!\n"); | |
2351 | } | |
2352 | ||
2353 | return 0; | |
2354 | ||
2355 | out_notify_fail: | |
2356 | (void)cancel_work_sync(&priv->service_task); | |
48189d6a | 2357 | out_read_prop_fail: |
b5996f11 | 2358 | free_netdev(ndev); |
2359 | return ret; | |
2360 | } | |
2361 | ||
2362 | static int hns_nic_dev_remove(struct platform_device *pdev) | |
2363 | { | |
2364 | struct net_device *ndev = platform_get_drvdata(pdev); | |
2365 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
2366 | ||
2367 | if (ndev->reg_state != NETREG_UNINITIALIZED) | |
2368 | unregister_netdev(ndev); | |
2369 | ||
2370 | if (priv->ring_data) | |
2371 | hns_nic_uninit_ring_data(priv); | |
2372 | priv->ring_data = NULL; | |
2373 | ||
262b38cd PR |
2374 | if (ndev->phydev) |
2375 | phy_disconnect(ndev->phydev); | |
b5996f11 | 2376 | |
2377 | if (!IS_ERR_OR_NULL(priv->ae_handle)) | |
2378 | hnae_put_handle(priv->ae_handle); | |
2379 | priv->ae_handle = NULL; | |
2380 | if (priv->notifier_block.notifier_call) | |
2381 | hnae_unregister_notifier(&priv->notifier_block); | |
2382 | priv->notifier_block.notifier_call = NULL; | |
2383 | ||
2384 | set_bit(NIC_STATE_REMOVING, &priv->state); | |
2385 | (void)cancel_work_sync(&priv->service_task); | |
2386 | ||
2387 | free_netdev(ndev); | |
2388 | return 0; | |
2389 | } | |
2390 | ||
2391 | static const struct of_device_id hns_enet_of_match[] = { | |
2392 | {.compatible = "hisilicon,hns-nic-v1",}, | |
2393 | {.compatible = "hisilicon,hns-nic-v2",}, | |
2394 | {}, | |
2395 | }; | |
2396 | ||
2397 | MODULE_DEVICE_TABLE(of, hns_enet_of_match); | |
2398 | ||
2399 | static struct platform_driver hns_nic_dev_driver = { | |
2400 | .driver = { | |
2401 | .name = "hns-nic", | |
b5996f11 | 2402 | .of_match_table = hns_enet_of_match, |
63434888 | 2403 | .acpi_match_table = ACPI_PTR(hns_enet_acpi_match), |
b5996f11 | 2404 | }, |
2405 | .probe = hns_nic_dev_probe, | |
2406 | .remove = hns_nic_dev_remove, | |
2407 | }; | |
2408 | ||
2409 | module_platform_driver(hns_nic_dev_driver); | |
2410 | ||
2411 | MODULE_DESCRIPTION("HISILICON HNS Ethernet driver"); | |
2412 | MODULE_AUTHOR("Hisilicon, Inc."); | |
2413 | MODULE_LICENSE("GPL"); | |
2414 | MODULE_ALIAS("platform:hns-nic"); |