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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
b5996f11 | 2 | /* |
3 | * Copyright (c) 2014-2015 Hisilicon Limited. | |
b5996f11 | 4 | */ |
5 | ||
6 | #include <linux/clk.h> | |
7 | #include <linux/cpumask.h> | |
8 | #include <linux/etherdevice.h> | |
9 | #include <linux/if_vlan.h> | |
10 | #include <linux/interrupt.h> | |
11 | #include <linux/io.h> | |
12 | #include <linux/ip.h> | |
13 | #include <linux/ipv6.h> | |
5a6bd84f | 14 | #include <linux/irq.h> |
b5996f11 | 15 | #include <linux/module.h> |
16 | #include <linux/phy.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/skbuff.h> | |
19 | ||
20 | #include "hnae.h" | |
21 | #include "hns_enet.h" | |
44770e11 | 22 | #include "hns_dsaf_mac.h" |
b5996f11 | 23 | |
24 | #define NIC_MAX_Q_PER_VF 16 | |
25 | #define HNS_NIC_TX_TIMEOUT (5 * HZ) | |
26 | ||
27 | #define SERVICE_TIMER_HZ (1 * HZ) | |
28 | ||
b5996f11 | 29 | #define RCB_IRQ_NOT_INITED 0 |
30 | #define RCB_IRQ_INITED 1 | |
9cbe9fd5 | 31 | #define HNS_BUFFER_SIZE_2048 2048 |
b5996f11 | 32 | |
13ac695e S |
33 | #define BD_MAX_SEND_SIZE 8191 |
34 | #define SKB_TMP_LEN(SKB) \ | |
35 | (((SKB)->transport_header - (SKB)->mac_header) + tcp_hdrlen(SKB)) | |
36 | ||
2e9361ef YL |
37 | static void fill_v2_desc_hw(struct hnae_ring *ring, void *priv, int size, |
38 | int send_sz, dma_addr_t dma, int frag_end, | |
39 | int buf_num, enum hns_desc_type type, int mtu) | |
13ac695e S |
40 | { |
41 | struct hnae_desc *desc = &ring->desc[ring->next_to_use]; | |
42 | struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; | |
43 | struct iphdr *iphdr; | |
44 | struct ipv6hdr *ipv6hdr; | |
45 | struct sk_buff *skb; | |
13ac695e S |
46 | __be16 protocol; |
47 | u8 bn_pid = 0; | |
48 | u8 rrcfv = 0; | |
49 | u8 ip_offset = 0; | |
50 | u8 tvsvsn = 0; | |
51 | u16 mss = 0; | |
52 | u8 l4_len = 0; | |
53 | u16 paylen = 0; | |
54 | ||
55 | desc_cb->priv = priv; | |
56 | desc_cb->length = size; | |
57 | desc_cb->dma = dma; | |
58 | desc_cb->type = type; | |
59 | ||
60 | desc->addr = cpu_to_le64(dma); | |
2e9361ef | 61 | desc->tx.send_size = cpu_to_le16((u16)send_sz); |
13ac695e | 62 | |
f8a1a636 | 63 | /* config bd buffer end */ |
13ac695e S |
64 | hnae_set_bit(rrcfv, HNSV2_TXD_VLD_B, 1); |
65 | hnae_set_field(bn_pid, HNSV2_TXD_BUFNUM_M, 0, buf_num - 1); | |
66 | ||
f8a1a636 SL |
67 | /* fill port_id in the tx bd for sending management pkts */ |
68 | hnae_set_field(bn_pid, HNSV2_TXD_PORTID_M, | |
69 | HNSV2_TXD_PORTID_S, ring->q->handle->dport_id); | |
70 | ||
13ac695e S |
71 | if (type == DESC_TYPE_SKB) { |
72 | skb = (struct sk_buff *)priv; | |
73 | ||
74 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
75 | skb_reset_mac_len(skb); | |
76 | protocol = skb->protocol; | |
77 | ip_offset = ETH_HLEN; | |
78 | ||
79 | if (protocol == htons(ETH_P_8021Q)) { | |
80 | ip_offset += VLAN_HLEN; | |
81 | protocol = vlan_get_protocol(skb); | |
82 | skb->protocol = protocol; | |
83 | } | |
84 | ||
85 | if (skb->protocol == htons(ETH_P_IP)) { | |
86 | iphdr = ip_hdr(skb); | |
87 | hnae_set_bit(rrcfv, HNSV2_TXD_L3CS_B, 1); | |
88 | hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1); | |
89 | ||
90 | /* check for tcp/udp header */ | |
0b51b1dc DH |
91 | if (iphdr->protocol == IPPROTO_TCP && |
92 | skb_is_gso(skb)) { | |
13ac695e S |
93 | hnae_set_bit(tvsvsn, |
94 | HNSV2_TXD_TSE_B, 1); | |
13ac695e | 95 | l4_len = tcp_hdrlen(skb); |
0b51b1dc DH |
96 | mss = skb_shinfo(skb)->gso_size; |
97 | paylen = skb->len - SKB_TMP_LEN(skb); | |
13ac695e S |
98 | } |
99 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
100 | hnae_set_bit(tvsvsn, HNSV2_TXD_IPV6_B, 1); | |
101 | ipv6hdr = ipv6_hdr(skb); | |
102 | hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1); | |
103 | ||
104 | /* check for tcp/udp header */ | |
0b51b1dc DH |
105 | if (ipv6hdr->nexthdr == IPPROTO_TCP && |
106 | skb_is_gso(skb) && skb_is_gso_v6(skb)) { | |
13ac695e S |
107 | hnae_set_bit(tvsvsn, |
108 | HNSV2_TXD_TSE_B, 1); | |
13ac695e | 109 | l4_len = tcp_hdrlen(skb); |
0b51b1dc DH |
110 | mss = skb_shinfo(skb)->gso_size; |
111 | paylen = skb->len - SKB_TMP_LEN(skb); | |
13ac695e S |
112 | } |
113 | } | |
114 | desc->tx.ip_offset = ip_offset; | |
115 | desc->tx.tse_vlan_snap_v6_sctp_nth = tvsvsn; | |
116 | desc->tx.mss = cpu_to_le16(mss); | |
117 | desc->tx.l4_len = l4_len; | |
118 | desc->tx.paylen = cpu_to_le16(paylen); | |
119 | } | |
120 | } | |
121 | ||
122 | hnae_set_bit(rrcfv, HNSV2_TXD_FE_B, frag_end); | |
123 | ||
124 | desc->tx.bn_pid = bn_pid; | |
125 | desc->tx.ra_ri_cs_fe_vld = rrcfv; | |
126 | ||
127 | ring_ptr_move_fw(ring, next_to_use); | |
128 | } | |
129 | ||
2e9361ef YL |
130 | static void fill_v2_desc(struct hnae_ring *ring, void *priv, |
131 | int size, dma_addr_t dma, int frag_end, | |
132 | int buf_num, enum hns_desc_type type, int mtu) | |
133 | { | |
134 | fill_v2_desc_hw(ring, priv, size, size, dma, frag_end, | |
135 | buf_num, type, mtu); | |
136 | } | |
137 | ||
63434888 KY |
138 | static const struct acpi_device_id hns_enet_acpi_match[] = { |
139 | { "HISI00C1", 0 }, | |
140 | { "HISI00C2", 0 }, | |
141 | { }, | |
142 | }; | |
143 | MODULE_DEVICE_TABLE(acpi, hns_enet_acpi_match); | |
144 | ||
b5996f11 | 145 | static void fill_desc(struct hnae_ring *ring, void *priv, |
146 | int size, dma_addr_t dma, int frag_end, | |
13ac695e | 147 | int buf_num, enum hns_desc_type type, int mtu) |
b5996f11 | 148 | { |
149 | struct hnae_desc *desc = &ring->desc[ring->next_to_use]; | |
150 | struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; | |
151 | struct sk_buff *skb; | |
152 | __be16 protocol; | |
153 | u32 ip_offset; | |
154 | u32 asid_bufnum_pid = 0; | |
155 | u32 flag_ipoffset = 0; | |
156 | ||
157 | desc_cb->priv = priv; | |
158 | desc_cb->length = size; | |
159 | desc_cb->dma = dma; | |
160 | desc_cb->type = type; | |
161 | ||
162 | desc->addr = cpu_to_le64(dma); | |
163 | desc->tx.send_size = cpu_to_le16((u16)size); | |
164 | ||
165 | /*config bd buffer end */ | |
166 | flag_ipoffset |= 1 << HNS_TXD_VLD_B; | |
167 | ||
168 | asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S; | |
169 | ||
170 | if (type == DESC_TYPE_SKB) { | |
171 | skb = (struct sk_buff *)priv; | |
172 | ||
173 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
174 | protocol = skb->protocol; | |
175 | ip_offset = ETH_HLEN; | |
176 | ||
177 | /*if it is a SW VLAN check the next protocol*/ | |
178 | if (protocol == htons(ETH_P_8021Q)) { | |
179 | ip_offset += VLAN_HLEN; | |
180 | protocol = vlan_get_protocol(skb); | |
181 | skb->protocol = protocol; | |
182 | } | |
183 | ||
184 | if (skb->protocol == htons(ETH_P_IP)) { | |
185 | flag_ipoffset |= 1 << HNS_TXD_L3CS_B; | |
186 | /* check for tcp/udp header */ | |
187 | flag_ipoffset |= 1 << HNS_TXD_L4CS_B; | |
188 | ||
189 | } else if (skb->protocol == htons(ETH_P_IPV6)) { | |
190 | /* ipv6 has not l3 cs, check for L4 header */ | |
191 | flag_ipoffset |= 1 << HNS_TXD_L4CS_B; | |
192 | } | |
193 | ||
194 | flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S; | |
195 | } | |
196 | } | |
197 | ||
198 | flag_ipoffset |= frag_end << HNS_TXD_FE_B; | |
199 | ||
200 | desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid); | |
201 | desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset); | |
202 | ||
203 | ring_ptr_move_fw(ring, next_to_use); | |
204 | } | |
205 | ||
206 | static void unfill_desc(struct hnae_ring *ring) | |
207 | { | |
208 | ring_ptr_move_bw(ring, next_to_use); | |
209 | } | |
210 | ||
13ac695e S |
211 | static int hns_nic_maybe_stop_tx( |
212 | struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring) | |
b5996f11 | 213 | { |
13ac695e S |
214 | struct sk_buff *skb = *out_skb; |
215 | struct sk_buff *new_skb = NULL; | |
b5996f11 | 216 | int buf_num; |
b5996f11 | 217 | |
218 | /* no. of segments (plus a header) */ | |
219 | buf_num = skb_shinfo(skb)->nr_frags + 1; | |
220 | ||
221 | if (unlikely(buf_num > ring->max_desc_num_per_pkt)) { | |
13ac695e S |
222 | if (ring_space(ring) < 1) |
223 | return -EBUSY; | |
b5996f11 | 224 | |
225 | new_skb = skb_copy(skb, GFP_ATOMIC); | |
13ac695e S |
226 | if (!new_skb) |
227 | return -ENOMEM; | |
b5996f11 | 228 | |
229 | dev_kfree_skb_any(skb); | |
13ac695e | 230 | *out_skb = new_skb; |
b5996f11 | 231 | buf_num = 1; |
b5996f11 | 232 | } else if (buf_num > ring_space(ring)) { |
13ac695e S |
233 | return -EBUSY; |
234 | } | |
235 | ||
236 | *bnum = buf_num; | |
237 | return 0; | |
238 | } | |
239 | ||
64353af6 S |
240 | static int hns_nic_maybe_stop_tso( |
241 | struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring) | |
242 | { | |
243 | int i; | |
244 | int size; | |
245 | int buf_num; | |
246 | int frag_num; | |
247 | struct sk_buff *skb = *out_skb; | |
248 | struct sk_buff *new_skb = NULL; | |
d7840976 | 249 | skb_frag_t *frag; |
64353af6 S |
250 | |
251 | size = skb_headlen(skb); | |
252 | buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; | |
253 | ||
254 | frag_num = skb_shinfo(skb)->nr_frags; | |
255 | for (i = 0; i < frag_num; i++) { | |
256 | frag = &skb_shinfo(skb)->frags[i]; | |
257 | size = skb_frag_size(frag); | |
258 | buf_num += (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; | |
259 | } | |
260 | ||
261 | if (unlikely(buf_num > ring->max_desc_num_per_pkt)) { | |
262 | buf_num = (skb->len + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; | |
263 | if (ring_space(ring) < buf_num) | |
264 | return -EBUSY; | |
265 | /* manual split the send packet */ | |
266 | new_skb = skb_copy(skb, GFP_ATOMIC); | |
267 | if (!new_skb) | |
268 | return -ENOMEM; | |
269 | dev_kfree_skb_any(skb); | |
270 | *out_skb = new_skb; | |
271 | ||
272 | } else if (ring_space(ring) < buf_num) { | |
273 | return -EBUSY; | |
274 | } | |
275 | ||
276 | *bnum = buf_num; | |
277 | return 0; | |
278 | } | |
279 | ||
280 | static void fill_tso_desc(struct hnae_ring *ring, void *priv, | |
281 | int size, dma_addr_t dma, int frag_end, | |
282 | int buf_num, enum hns_desc_type type, int mtu) | |
283 | { | |
284 | int frag_buf_num; | |
285 | int sizeoflast; | |
286 | int k; | |
287 | ||
288 | frag_buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; | |
289 | sizeoflast = size % BD_MAX_SEND_SIZE; | |
290 | sizeoflast = sizeoflast ? sizeoflast : BD_MAX_SEND_SIZE; | |
291 | ||
292 | /* when the frag size is bigger than hardware, split this frag */ | |
293 | for (k = 0; k < frag_buf_num; k++) | |
2e9361ef YL |
294 | fill_v2_desc_hw(ring, priv, k == 0 ? size : 0, |
295 | (k == frag_buf_num - 1) ? | |
64353af6 | 296 | sizeoflast : BD_MAX_SEND_SIZE, |
2e9361ef YL |
297 | dma + BD_MAX_SEND_SIZE * k, |
298 | frag_end && (k == frag_buf_num - 1) ? 1 : 0, | |
299 | buf_num, | |
300 | (type == DESC_TYPE_SKB && !k) ? | |
64353af6 | 301 | DESC_TYPE_SKB : DESC_TYPE_PAGE, |
2e9361ef | 302 | mtu); |
64353af6 S |
303 | } |
304 | ||
27463ad9 YL |
305 | netdev_tx_t hns_nic_net_xmit_hw(struct net_device *ndev, |
306 | struct sk_buff *skb, | |
307 | struct hns_nic_ring_data *ring_data) | |
13ac695e S |
308 | { |
309 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
13ac695e | 310 | struct hnae_ring *ring = ring_data->ring; |
b85ea006 | 311 | struct device *dev = ring_to_dev(ring); |
13ac695e | 312 | struct netdev_queue *dev_queue; |
d7840976 | 313 | skb_frag_t *frag; |
13ac695e S |
314 | int buf_num; |
315 | int seg_num; | |
316 | dma_addr_t dma; | |
317 | int size, next_to_use; | |
318 | int i; | |
319 | ||
320 | switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) { | |
321 | case -EBUSY: | |
b5996f11 | 322 | ring->stats.tx_busy++; |
323 | goto out_net_tx_busy; | |
13ac695e S |
324 | case -ENOMEM: |
325 | ring->stats.sw_err_cnt++; | |
326 | netdev_err(ndev, "no memory to xmit!\n"); | |
327 | goto out_err_tx_ok; | |
328 | default: | |
329 | break; | |
b5996f11 | 330 | } |
13ac695e S |
331 | |
332 | /* no. of segments (plus a header) */ | |
333 | seg_num = skb_shinfo(skb)->nr_frags + 1; | |
b5996f11 | 334 | next_to_use = ring->next_to_use; |
335 | ||
336 | /* fill the first part */ | |
337 | size = skb_headlen(skb); | |
338 | dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE); | |
339 | if (dma_mapping_error(dev, dma)) { | |
340 | netdev_err(ndev, "TX head DMA map failed\n"); | |
341 | ring->stats.sw_err_cnt++; | |
342 | goto out_err_tx_ok; | |
343 | } | |
13ac695e S |
344 | priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0, |
345 | buf_num, DESC_TYPE_SKB, ndev->mtu); | |
b5996f11 | 346 | |
347 | /* fill the fragments */ | |
13ac695e | 348 | for (i = 1; i < seg_num; i++) { |
b5996f11 | 349 | frag = &skb_shinfo(skb)->frags[i - 1]; |
350 | size = skb_frag_size(frag); | |
351 | dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE); | |
352 | if (dma_mapping_error(dev, dma)) { | |
353 | netdev_err(ndev, "TX frag(%d) DMA map failed\n", i); | |
354 | ring->stats.sw_err_cnt++; | |
355 | goto out_map_frag_fail; | |
356 | } | |
13ac695e S |
357 | priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma, |
358 | seg_num - 1 == i ? 1 : 0, buf_num, | |
359 | DESC_TYPE_PAGE, ndev->mtu); | |
b5996f11 | 360 | } |
361 | ||
362 | /*complete translate all packets*/ | |
363 | dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping); | |
364 | netdev_tx_sent_queue(dev_queue, skb->len); | |
365 | ||
27463ad9 YL |
366 | netif_trans_update(ndev); |
367 | ndev->stats.tx_bytes += skb->len; | |
368 | ndev->stats.tx_packets++; | |
369 | ||
b5996f11 | 370 | wmb(); /* commit all data before submit */ |
371 | assert(skb->queue_mapping < priv->ae_handle->q_num); | |
372 | hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num); | |
b5996f11 | 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 | ||
9cbe9fd5 | 409 | static void hns_nic_reuse_page(struct sk_buff *skb, int i, |
410 | struct hnae_ring *ring, int pull_len, | |
411 | struct hnae_desc_cb *desc_cb) | |
b5996f11 | 412 | { |
9cbe9fd5 | 413 | struct hnae_desc *desc; |
ac4a5b52 HT |
414 | u32 truesize; |
415 | int size; | |
9cbe9fd5 | 416 | int last_offset; |
be78a690 AB |
417 | bool twobufs; |
418 | ||
b4957ab0 S |
419 | twobufs = ((PAGE_SIZE < 8192) && |
420 | hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048); | |
9cbe9fd5 | 421 | |
422 | desc = &ring->desc[ring->next_to_clean]; | |
423 | size = le16_to_cpu(desc->rx.size); | |
424 | ||
be78a690 | 425 | if (twobufs) { |
9cbe9fd5 | 426 | truesize = hnae_buf_size(ring); |
427 | } else { | |
428 | truesize = ALIGN(size, L1_CACHE_BYTES); | |
429 | last_offset = hnae_page_size(ring) - hnae_buf_size(ring); | |
430 | } | |
431 | ||
9cbe9fd5 | 432 | skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len, |
b1ccd4c0 | 433 | size - pull_len, truesize); |
9cbe9fd5 | 434 | |
b5996f11 | 435 | /* avoid re-using remote pages,flag default unreuse */ |
be78a690 AB |
436 | if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id())) |
437 | return; | |
438 | ||
439 | if (twobufs) { | |
440 | /* if we are only owner of page we can reuse it */ | |
441 | if (likely(page_count(desc_cb->priv) == 1)) { | |
442 | /* flip page offset to other buffer */ | |
443 | desc_cb->page_offset ^= truesize; | |
b5996f11 | 444 | |
b5996f11 | 445 | desc_cb->reuse_flag = 1; |
446 | /* bump ref count on page before it is given*/ | |
447 | get_page(desc_cb->priv); | |
448 | } | |
be78a690 AB |
449 | return; |
450 | } | |
451 | ||
452 | /* move offset up to the next cache line */ | |
453 | desc_cb->page_offset += truesize; | |
454 | ||
455 | if (desc_cb->page_offset <= last_offset) { | |
456 | desc_cb->reuse_flag = 1; | |
457 | /* bump ref count on page before it is given*/ | |
458 | get_page(desc_cb->priv); | |
b5996f11 | 459 | } |
460 | } | |
461 | ||
13ac695e S |
462 | static void get_v2rx_desc_bnum(u32 bnum_flag, int *out_bnum) |
463 | { | |
464 | *out_bnum = hnae_get_field(bnum_flag, | |
465 | HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S) + 1; | |
466 | } | |
467 | ||
468 | static void get_rx_desc_bnum(u32 bnum_flag, int *out_bnum) | |
469 | { | |
470 | *out_bnum = hnae_get_field(bnum_flag, | |
471 | HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S); | |
472 | } | |
473 | ||
862b3d20 S |
474 | static void hns_nic_rx_checksum(struct hns_nic_ring_data *ring_data, |
475 | struct sk_buff *skb, u32 flag) | |
476 | { | |
477 | struct net_device *netdev = ring_data->napi.dev; | |
478 | u32 l3id; | |
479 | u32 l4id; | |
480 | ||
481 | /* check if RX checksum offload is enabled */ | |
482 | if (unlikely(!(netdev->features & NETIF_F_RXCSUM))) | |
483 | return; | |
484 | ||
485 | /* In hardware, we only support checksum for the following protocols: | |
486 | * 1) IPv4, | |
487 | * 2) TCP(over IPv4 or IPv6), | |
488 | * 3) UDP(over IPv4 or IPv6), | |
489 | * 4) SCTP(over IPv4 or IPv6) | |
490 | * but we support many L3(IPv4, IPv6, MPLS, PPPoE etc) and L4(TCP, | |
491 | * UDP, GRE, SCTP, IGMP, ICMP etc.) protocols. | |
492 | * | |
493 | * Hardware limitation: | |
494 | * Our present hardware RX Descriptor lacks L3/L4 checksum "Status & | |
495 | * Error" bit (which usually can be used to indicate whether checksum | |
496 | * was calculated by the hardware and if there was any error encountered | |
497 | * during checksum calculation). | |
498 | * | |
499 | * Software workaround: | |
500 | * We do get info within the RX descriptor about the kind of L3/L4 | |
501 | * protocol coming in the packet and the error status. These errors | |
502 | * might not just be checksum errors but could be related to version, | |
503 | * length of IPv4, UDP, TCP etc. | |
504 | * Because there is no-way of knowing if it is a L3/L4 error due to bad | |
505 | * checksum or any other L3/L4 error, we will not (cannot) convey | |
506 | * checksum status for such cases to upper stack and will not maintain | |
507 | * the RX L3/L4 checksum counters as well. | |
508 | */ | |
509 | ||
510 | l3id = hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S); | |
511 | l4id = hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S); | |
512 | ||
513 | /* check L3 protocol for which checksum is supported */ | |
514 | if ((l3id != HNS_RX_FLAG_L3ID_IPV4) && (l3id != HNS_RX_FLAG_L3ID_IPV6)) | |
515 | return; | |
516 | ||
517 | /* check for any(not just checksum)flagged L3 protocol errors */ | |
518 | if (unlikely(hnae_get_bit(flag, HNS_RXD_L3E_B))) | |
519 | return; | |
520 | ||
521 | /* we do not support checksum of fragmented packets */ | |
522 | if (unlikely(hnae_get_bit(flag, HNS_RXD_FRAG_B))) | |
523 | return; | |
524 | ||
525 | /* check L4 protocol for which checksum is supported */ | |
526 | if ((l4id != HNS_RX_FLAG_L4ID_TCP) && | |
527 | (l4id != HNS_RX_FLAG_L4ID_UDP) && | |
528 | (l4id != HNS_RX_FLAG_L4ID_SCTP)) | |
529 | return; | |
530 | ||
531 | /* check for any(not just checksum)flagged L4 protocol errors */ | |
532 | if (unlikely(hnae_get_bit(flag, HNS_RXD_L4E_B))) | |
533 | return; | |
534 | ||
535 | /* now, this has to be a packet with valid RX checksum */ | |
536 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
537 | } | |
538 | ||
b5996f11 | 539 | static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data, |
540 | struct sk_buff **out_skb, int *out_bnum) | |
541 | { | |
542 | struct hnae_ring *ring = ring_data->ring; | |
543 | struct net_device *ndev = ring_data->napi.dev; | |
13ac695e | 544 | struct hns_nic_priv *priv = netdev_priv(ndev); |
b5996f11 | 545 | struct sk_buff *skb; |
546 | struct hnae_desc *desc; | |
547 | struct hnae_desc_cb *desc_cb; | |
548 | unsigned char *va; | |
9cbe9fd5 | 549 | int bnum, length, i; |
b5996f11 | 550 | int pull_len; |
551 | u32 bnum_flag; | |
552 | ||
b5996f11 | 553 | desc = &ring->desc[ring->next_to_clean]; |
554 | desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
13ac695e S |
555 | |
556 | prefetch(desc); | |
557 | ||
b5996f11 | 558 | va = (unsigned char *)desc_cb->buf + desc_cb->page_offset; |
559 | ||
13ac695e | 560 | /* prefetch first cache line of first page */ |
f468f21b | 561 | net_prefetch(va); |
13ac695e S |
562 | |
563 | skb = *out_skb = napi_alloc_skb(&ring_data->napi, | |
564 | HNS_RX_HEAD_SIZE); | |
b5996f11 | 565 | if (unlikely(!skb)) { |
b5996f11 | 566 | ring->stats.sw_err_cnt++; |
567 | return -ENOMEM; | |
568 | } | |
569 | ||
9cbe9fd5 | 570 | prefetchw(skb->data); |
13ac695e S |
571 | length = le16_to_cpu(desc->rx.pkt_len); |
572 | bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag); | |
573 | priv->ops.get_rxd_bnum(bnum_flag, &bnum); | |
574 | *out_bnum = bnum; | |
575 | ||
b5996f11 | 576 | if (length <= HNS_RX_HEAD_SIZE) { |
577 | memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long))); | |
578 | ||
579 | /* we can reuse buffer as-is, just make sure it is local */ | |
580 | if (likely(page_to_nid(desc_cb->priv) == numa_node_id())) | |
581 | desc_cb->reuse_flag = 1; | |
582 | else /* this page cannot be reused so discard it */ | |
583 | put_page(desc_cb->priv); | |
584 | ||
585 | ring_ptr_move_fw(ring, next_to_clean); | |
586 | ||
587 | if (unlikely(bnum != 1)) { /* check err*/ | |
588 | *out_bnum = 1; | |
589 | goto out_bnum_err; | |
590 | } | |
591 | } else { | |
592 | ring->stats.seg_pkt_cnt++; | |
593 | ||
c43f1255 | 594 | pull_len = eth_get_headlen(ndev, va, HNS_RX_HEAD_SIZE); |
b5996f11 | 595 | memcpy(__skb_put(skb, pull_len), va, |
596 | ALIGN(pull_len, sizeof(long))); | |
597 | ||
9cbe9fd5 | 598 | hns_nic_reuse_page(skb, 0, ring, pull_len, desc_cb); |
b5996f11 | 599 | ring_ptr_move_fw(ring, next_to_clean); |
600 | ||
601 | if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/ | |
602 | *out_bnum = 1; | |
603 | goto out_bnum_err; | |
604 | } | |
605 | for (i = 1; i < bnum; i++) { | |
606 | desc = &ring->desc[ring->next_to_clean]; | |
607 | desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
b5996f11 | 608 | |
9cbe9fd5 | 609 | hns_nic_reuse_page(skb, i, ring, 0, desc_cb); |
b5996f11 | 610 | ring_ptr_move_fw(ring, next_to_clean); |
611 | } | |
612 | } | |
613 | ||
614 | /* check except process, free skb and jump the desc */ | |
615 | if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) { | |
616 | out_bnum_err: | |
617 | *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/ | |
618 | netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n", | |
619 | bnum, ring->max_desc_num_per_pkt, | |
620 | length, (int)MAX_SKB_FRAGS, | |
621 | ((u64 *)desc)[0], ((u64 *)desc)[1]); | |
622 | ring->stats.err_bd_num++; | |
623 | dev_kfree_skb_any(skb); | |
624 | return -EDOM; | |
625 | } | |
626 | ||
627 | bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag); | |
628 | ||
629 | if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) { | |
630 | netdev_err(ndev, "no valid bd,%016llx,%016llx\n", | |
631 | ((u64 *)desc)[0], ((u64 *)desc)[1]); | |
632 | ring->stats.non_vld_descs++; | |
633 | dev_kfree_skb_any(skb); | |
634 | return -EINVAL; | |
635 | } | |
636 | ||
637 | if (unlikely((!desc->rx.pkt_len) || | |
638 | hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) { | |
b5996f11 | 639 | ring->stats.err_pkt_len++; |
640 | dev_kfree_skb_any(skb); | |
641 | return -EFAULT; | |
642 | } | |
643 | ||
644 | if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) { | |
b5996f11 | 645 | ring->stats.l2_err++; |
646 | dev_kfree_skb_any(skb); | |
647 | return -EFAULT; | |
648 | } | |
649 | ||
650 | ring->stats.rx_pkts++; | |
651 | ring->stats.rx_bytes += skb->len; | |
652 | ||
862b3d20 S |
653 | /* indicate to upper stack if our hardware has already calculated |
654 | * the RX checksum | |
655 | */ | |
656 | hns_nic_rx_checksum(ring_data, skb, bnum_flag); | |
b5996f11 | 657 | |
658 | return 0; | |
659 | } | |
660 | ||
661 | static void | |
662 | hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count) | |
663 | { | |
664 | int i, ret; | |
665 | struct hnae_desc_cb res_cbs; | |
666 | struct hnae_desc_cb *desc_cb; | |
667 | struct hnae_ring *ring = ring_data->ring; | |
668 | struct net_device *ndev = ring_data->napi.dev; | |
669 | ||
670 | for (i = 0; i < cleand_count; i++) { | |
671 | desc_cb = &ring->desc_cb[ring->next_to_use]; | |
672 | if (desc_cb->reuse_flag) { | |
673 | ring->stats.reuse_pg_cnt++; | |
674 | hnae_reuse_buffer(ring, ring->next_to_use); | |
675 | } else { | |
676 | ret = hnae_reserve_buffer_map(ring, &res_cbs); | |
677 | if (ret) { | |
678 | ring->stats.sw_err_cnt++; | |
679 | netdev_err(ndev, "hnae reserve buffer map failed.\n"); | |
680 | break; | |
681 | } | |
682 | hnae_replace_buffer(ring, ring->next_to_use, &res_cbs); | |
683 | } | |
684 | ||
685 | ring_ptr_move_fw(ring, next_to_use); | |
686 | } | |
687 | ||
688 | wmb(); /* make all data has been write before submit */ | |
689 | writel_relaxed(i, ring->io_base + RCB_REG_HEAD); | |
690 | } | |
691 | ||
692 | /* return error number for error or number of desc left to take | |
693 | */ | |
694 | static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data, | |
695 | struct sk_buff *skb) | |
696 | { | |
697 | struct net_device *ndev = ring_data->napi.dev; | |
698 | ||
699 | skb->protocol = eth_type_trans(skb, ndev); | |
93ab48a9 | 700 | napi_gro_receive(&ring_data->napi, skb); |
b5996f11 | 701 | } |
702 | ||
0e97cd4e | 703 | static int hns_desc_unused(struct hnae_ring *ring) |
704 | { | |
705 | int ntc = ring->next_to_clean; | |
706 | int ntu = ring->next_to_use; | |
707 | ||
708 | return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu; | |
709 | } | |
710 | ||
b8c17f70 LYS |
711 | #define HNS_LOWEST_LATENCY_RATE 27 /* 27 MB/s */ |
712 | #define HNS_LOW_LATENCY_RATE 80 /* 80 MB/s */ | |
713 | ||
714 | #define HNS_COAL_BDNUM 3 | |
715 | ||
716 | static u32 hns_coal_rx_bdnum(struct hnae_ring *ring) | |
717 | { | |
718 | bool coal_enable = ring->q->handle->coal_adapt_en; | |
719 | ||
720 | if (coal_enable && | |
721 | ring->coal_last_rx_bytes > HNS_LOWEST_LATENCY_RATE) | |
722 | return HNS_COAL_BDNUM; | |
723 | else | |
724 | return 0; | |
725 | } | |
726 | ||
727 | static void hns_update_rx_rate(struct hnae_ring *ring) | |
728 | { | |
729 | bool coal_enable = ring->q->handle->coal_adapt_en; | |
730 | u32 time_passed_ms; | |
731 | u64 total_bytes; | |
732 | ||
733 | if (!coal_enable || | |
734 | time_before(jiffies, ring->coal_last_jiffies + (HZ >> 4))) | |
735 | return; | |
736 | ||
737 | /* ring->stats.rx_bytes overflowed */ | |
738 | if (ring->coal_last_rx_bytes > ring->stats.rx_bytes) { | |
739 | ring->coal_last_rx_bytes = ring->stats.rx_bytes; | |
740 | ring->coal_last_jiffies = jiffies; | |
741 | return; | |
742 | } | |
743 | ||
744 | total_bytes = ring->stats.rx_bytes - ring->coal_last_rx_bytes; | |
745 | time_passed_ms = jiffies_to_msecs(jiffies - ring->coal_last_jiffies); | |
967b2e2a LYS |
746 | do_div(total_bytes, time_passed_ms); |
747 | ring->coal_rx_rate = total_bytes >> 10; | |
b8c17f70 LYS |
748 | |
749 | ring->coal_last_rx_bytes = ring->stats.rx_bytes; | |
750 | ring->coal_last_jiffies = jiffies; | |
751 | } | |
752 | ||
753 | /** | |
754 | * smooth_alg - smoothing algrithm for adjusting coalesce parameter | |
d0ea5cbd JB |
755 | * @new_param: new value |
756 | * @old_param: old value | |
b8c17f70 LYS |
757 | **/ |
758 | static u32 smooth_alg(u32 new_param, u32 old_param) | |
759 | { | |
760 | u32 gap = (new_param > old_param) ? new_param - old_param | |
761 | : old_param - new_param; | |
762 | ||
763 | if (gap > 8) | |
764 | gap >>= 3; | |
765 | ||
766 | if (new_param > old_param) | |
767 | return old_param + gap; | |
768 | else | |
769 | return old_param - gap; | |
770 | } | |
771 | ||
772 | /** | |
5a9594cf | 773 | * hns_nic_adpt_coalesce - self adapte coalesce according to rx rate |
b8c17f70 LYS |
774 | * @ring_data: pointer to hns_nic_ring_data |
775 | **/ | |
776 | static void hns_nic_adpt_coalesce(struct hns_nic_ring_data *ring_data) | |
777 | { | |
778 | struct hnae_ring *ring = ring_data->ring; | |
779 | struct hnae_handle *handle = ring->q->handle; | |
780 | u32 new_coal_param, old_coal_param = ring->coal_param; | |
781 | ||
782 | if (ring->coal_rx_rate < HNS_LOWEST_LATENCY_RATE) | |
783 | new_coal_param = HNAE_LOWEST_LATENCY_COAL_PARAM; | |
784 | else if (ring->coal_rx_rate < HNS_LOW_LATENCY_RATE) | |
785 | new_coal_param = HNAE_LOW_LATENCY_COAL_PARAM; | |
786 | else | |
787 | new_coal_param = HNAE_BULK_LATENCY_COAL_PARAM; | |
788 | ||
789 | if (new_coal_param == old_coal_param && | |
790 | new_coal_param == handle->coal_param) | |
791 | return; | |
792 | ||
793 | new_coal_param = smooth_alg(new_coal_param, old_coal_param); | |
794 | ring->coal_param = new_coal_param; | |
795 | ||
796 | /** | |
797 | * Because all ring in one port has one coalesce param, when one ring | |
798 | * calculate its own coalesce param, it cannot write to hardware at | |
799 | * once. There are three conditions as follows: | |
800 | * 1. current ring's coalesce param is larger than the hardware. | |
801 | * 2. or ring which adapt last time can change again. | |
802 | * 3. timeout. | |
803 | */ | |
804 | if (new_coal_param == handle->coal_param) { | |
805 | handle->coal_last_jiffies = jiffies; | |
806 | handle->coal_ring_idx = ring_data->queue_index; | |
807 | } else if (new_coal_param > handle->coal_param || | |
808 | handle->coal_ring_idx == ring_data->queue_index || | |
809 | time_after(jiffies, handle->coal_last_jiffies + (HZ >> 4))) { | |
810 | handle->dev->ops->set_coalesce_usecs(handle, | |
811 | new_coal_param); | |
812 | handle->dev->ops->set_coalesce_frames(handle, | |
813 | 1, new_coal_param); | |
814 | handle->coal_param = new_coal_param; | |
815 | handle->coal_ring_idx = ring_data->queue_index; | |
816 | handle->coal_last_jiffies = jiffies; | |
817 | } | |
818 | } | |
819 | ||
b5996f11 | 820 | static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data, |
821 | int budget, void *v) | |
822 | { | |
823 | struct hnae_ring *ring = ring_data->ring; | |
824 | struct sk_buff *skb; | |
34447271 | 825 | int num, bnum; |
b5996f11 | 826 | #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16 |
827 | int recv_pkts, recv_bds, clean_count, err; | |
0e97cd4e | 828 | int unused_count = hns_desc_unused(ring); |
b5996f11 | 829 | |
830 | num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); | |
831 | rmb(); /* make sure num taken effect before the other data is touched */ | |
832 | ||
833 | recv_pkts = 0, recv_bds = 0, clean_count = 0; | |
0e97cd4e | 834 | num -= unused_count; |
34447271 | 835 | |
b5996f11 | 836 | while (recv_pkts < budget && recv_bds < num) { |
6ba312eb | 837 | /* reuse or realloc buffers */ |
0e97cd4e | 838 | if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) { |
839 | hns_nic_alloc_rx_buffers(ring_data, | |
840 | clean_count + unused_count); | |
b5996f11 | 841 | clean_count = 0; |
0e97cd4e | 842 | unused_count = hns_desc_unused(ring); |
b5996f11 | 843 | } |
844 | ||
6ba312eb | 845 | /* poll one pkt */ |
b5996f11 | 846 | err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum); |
847 | if (unlikely(!skb)) /* this fault cannot be repaired */ | |
3a31b64e | 848 | goto out; |
b5996f11 | 849 | |
850 | recv_bds += bnum; | |
851 | clean_count += bnum; | |
852 | if (unlikely(err)) { /* do jump the err */ | |
853 | recv_pkts++; | |
854 | continue; | |
855 | } | |
856 | ||
857 | /* do update ip stack process*/ | |
858 | ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)( | |
859 | ring_data, skb); | |
860 | recv_pkts++; | |
861 | } | |
862 | ||
3a31b64e | 863 | out: |
13ac695e | 864 | /* make all data has been write before submit */ |
0e97cd4e | 865 | if (clean_count + unused_count > 0) |
866 | hns_nic_alloc_rx_buffers(ring_data, | |
867 | clean_count + unused_count); | |
13ac695e | 868 | |
b5996f11 | 869 | return recv_pkts; |
870 | } | |
871 | ||
36eedfde | 872 | static bool hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data) |
b5996f11 | 873 | { |
874 | struct hnae_ring *ring = ring_data->ring; | |
7f8bcd91 | 875 | int num; |
b8c17f70 | 876 | bool rx_stopped; |
b5996f11 | 877 | |
b8c17f70 | 878 | hns_update_rx_rate(ring); |
cee5add4 | 879 | |
b5996f11 | 880 | /* for hardware bug fixed */ |
b8c17f70 | 881 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0); |
b5996f11 | 882 | num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); |
883 | ||
b8c17f70 LYS |
884 | if (num <= hns_coal_rx_bdnum(ring)) { |
885 | if (ring->q->handle->coal_adapt_en) | |
886 | hns_nic_adpt_coalesce(ring_data); | |
887 | ||
888 | rx_stopped = true; | |
889 | } else { | |
b5996f11 | 890 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( |
891 | ring_data->ring, 1); | |
892 | ||
b8c17f70 | 893 | rx_stopped = false; |
b5996f11 | 894 | } |
b8c17f70 LYS |
895 | |
896 | return rx_stopped; | |
b5996f11 | 897 | } |
898 | ||
36eedfde | 899 | static bool hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data) |
cee5add4 DH |
900 | { |
901 | struct hnae_ring *ring = ring_data->ring; | |
36eedfde | 902 | int num; |
cee5add4 | 903 | |
b8c17f70 | 904 | hns_update_rx_rate(ring); |
cee5add4 DH |
905 | num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); |
906 | ||
b8c17f70 LYS |
907 | if (num <= hns_coal_rx_bdnum(ring)) { |
908 | if (ring->q->handle->coal_adapt_en) | |
909 | hns_nic_adpt_coalesce(ring_data); | |
910 | ||
36eedfde | 911 | return true; |
b8c17f70 LYS |
912 | } |
913 | ||
914 | return false; | |
cee5add4 DH |
915 | } |
916 | ||
b5996f11 | 917 | static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring, |
918 | int *bytes, int *pkts) | |
919 | { | |
920 | struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean]; | |
921 | ||
922 | (*pkts) += (desc_cb->type == DESC_TYPE_SKB); | |
923 | (*bytes) += desc_cb->length; | |
924 | /* desc_cb will be cleaned, after hnae_free_buffer_detach*/ | |
925 | hnae_free_buffer_detach(ring, ring->next_to_clean); | |
926 | ||
927 | ring_ptr_move_fw(ring, next_to_clean); | |
928 | } | |
929 | ||
930 | static int is_valid_clean_head(struct hnae_ring *ring, int h) | |
931 | { | |
932 | int u = ring->next_to_use; | |
933 | int c = ring->next_to_clean; | |
934 | ||
935 | if (unlikely(h > ring->desc_num)) | |
936 | return 0; | |
937 | ||
938 | assert(u > 0 && u < ring->desc_num); | |
939 | assert(c > 0 && c < ring->desc_num); | |
940 | assert(u != c && h != c); /* must be checked before call this func */ | |
941 | ||
942 | return u > c ? (h > c && h <= u) : (h > c || h <= u); | |
943 | } | |
944 | ||
b5996f11 | 945 | /* reclaim all desc in one budget |
946 | * return error or number of desc left | |
947 | */ | |
948 | static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data, | |
949 | int budget, void *v) | |
950 | { | |
951 | struct hnae_ring *ring = ring_data->ring; | |
952 | struct net_device *ndev = ring_data->napi.dev; | |
953 | struct netdev_queue *dev_queue; | |
954 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
955 | int head; | |
956 | int bytes, pkts; | |
957 | ||
b5996f11 | 958 | head = readl_relaxed(ring->io_base + RCB_REG_HEAD); |
959 | rmb(); /* make sure head is ready before touch any data */ | |
960 | ||
bf5a6b4c | 961 | if (is_ring_empty(ring) || head == ring->next_to_clean) |
b5996f11 | 962 | return 0; /* no data to poll */ |
b5996f11 | 963 | |
964 | if (!is_valid_clean_head(ring, head)) { | |
965 | netdev_err(ndev, "wrong head (%d, %d-%d)\n", head, | |
966 | ring->next_to_use, ring->next_to_clean); | |
967 | ring->stats.io_err_cnt++; | |
b5996f11 | 968 | return -EIO; |
969 | } | |
970 | ||
971 | bytes = 0; | |
972 | pkts = 0; | |
9cbe9fd5 | 973 | while (head != ring->next_to_clean) { |
b5996f11 | 974 | hns_nic_reclaim_one_desc(ring, &bytes, &pkts); |
9cbe9fd5 | 975 | /* issue prefetch for next Tx descriptor */ |
976 | prefetch(&ring->desc_cb[ring->next_to_clean]); | |
977 | } | |
3a39a12a LS |
978 | /* update tx ring statistics. */ |
979 | ring->stats.tx_pkts += pkts; | |
980 | ring->stats.tx_bytes += bytes; | |
b5996f11 | 981 | |
b5996f11 | 982 | dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index); |
983 | netdev_tx_completed_queue(dev_queue, pkts, bytes); | |
984 | ||
13ac695e S |
985 | if (unlikely(priv->link && !netif_carrier_ok(ndev))) |
986 | netif_carrier_on(ndev); | |
987 | ||
b5996f11 | 988 | if (unlikely(pkts && netif_carrier_ok(ndev) && |
989 | (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) { | |
990 | /* Make sure that anybody stopping the queue after this | |
991 | * sees the new next_to_clean. | |
992 | */ | |
993 | smp_mb(); | |
994 | if (netif_tx_queue_stopped(dev_queue) && | |
995 | !test_bit(NIC_STATE_DOWN, &priv->state)) { | |
996 | netif_tx_wake_queue(dev_queue); | |
997 | ring->stats.restart_queue++; | |
998 | } | |
999 | } | |
1000 | return 0; | |
1001 | } | |
1002 | ||
36eedfde | 1003 | static bool hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data) |
b5996f11 | 1004 | { |
1005 | struct hnae_ring *ring = ring_data->ring; | |
cee5add4 DH |
1006 | int head; |
1007 | ||
1008 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0); | |
1009 | ||
1010 | head = readl_relaxed(ring->io_base + RCB_REG_HEAD); | |
b5996f11 | 1011 | |
1012 | if (head != ring->next_to_clean) { | |
1013 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( | |
1014 | ring_data->ring, 1); | |
1015 | ||
36eedfde | 1016 | return false; |
1017 | } else { | |
1018 | return true; | |
b5996f11 | 1019 | } |
1020 | } | |
1021 | ||
36eedfde | 1022 | static bool hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data) |
cee5add4 DH |
1023 | { |
1024 | struct hnae_ring *ring = ring_data->ring; | |
1025 | int head = readl_relaxed(ring->io_base + RCB_REG_HEAD); | |
1026 | ||
1027 | if (head == ring->next_to_clean) | |
36eedfde | 1028 | return true; |
cee5add4 | 1029 | else |
36eedfde | 1030 | return false; |
cee5add4 DH |
1031 | } |
1032 | ||
b5996f11 | 1033 | static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data) |
1034 | { | |
1035 | struct hnae_ring *ring = ring_data->ring; | |
1036 | struct net_device *ndev = ring_data->napi.dev; | |
1037 | struct netdev_queue *dev_queue; | |
1038 | int head; | |
1039 | int bytes, pkts; | |
1040 | ||
b5996f11 | 1041 | head = ring->next_to_use; /* ntu :soft setted ring position*/ |
1042 | bytes = 0; | |
1043 | pkts = 0; | |
1044 | while (head != ring->next_to_clean) | |
1045 | hns_nic_reclaim_one_desc(ring, &bytes, &pkts); | |
1046 | ||
b5996f11 | 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 | clean_complete += ring_data->poll_one( |
1059 | ring_data, budget - clean_complete, | |
1060 | ring_data->ex_process); | |
1061 | ||
1062 | if (clean_complete < budget) { | |
1063 | if (ring_data->fini_process(ring_data)) { | |
1064 | napi_complete(napi); | |
1065 | ring->q->handle->dev->ops->toggle_ring_irq(ring, 0); | |
1066 | } else { | |
49edd6a2 | 1067 | return budget; |
36eedfde | 1068 | } |
b5996f11 | 1069 | } |
1070 | ||
1071 | return clean_complete; | |
1072 | } | |
1073 | ||
1074 | static irqreturn_t hns_irq_handle(int irq, void *dev) | |
1075 | { | |
1076 | struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev; | |
1077 | ||
1078 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( | |
1079 | ring_data->ring, 1); | |
1080 | napi_schedule(&ring_data->napi); | |
1081 | ||
1082 | return IRQ_HANDLED; | |
1083 | } | |
1084 | ||
1085 | /** | |
1086 | *hns_nic_adjust_link - adjust net work mode by the phy stat or new param | |
1087 | *@ndev: net device | |
1088 | */ | |
1089 | static void hns_nic_adjust_link(struct net_device *ndev) | |
1090 | { | |
1091 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1092 | struct hnae_handle *h = priv->ae_handle; | |
bb7189dc QX |
1093 | int state = 1; |
1094 | ||
31fabbee | 1095 | /* If there is no phy, do not need adjust link */ |
262b38cd | 1096 | if (ndev->phydev) { |
31fabbee PL |
1097 | /* When phy link down, do nothing */ |
1098 | if (ndev->phydev->link == 0) | |
1099 | return; | |
1100 | ||
1101 | if (h->dev->ops->need_adjust_link(h, ndev->phydev->speed, | |
1102 | ndev->phydev->duplex)) { | |
1103 | /* because Hi161X chip don't support to change gmac | |
1104 | * speed and duplex with traffic. Delay 200ms to | |
1105 | * make sure there is no more data in chip FIFO. | |
1106 | */ | |
1107 | netif_carrier_off(ndev); | |
1108 | msleep(200); | |
1109 | h->dev->ops->adjust_link(h, ndev->phydev->speed, | |
1110 | ndev->phydev->duplex); | |
1111 | netif_carrier_on(ndev); | |
1112 | } | |
bb7189dc | 1113 | } |
31fabbee | 1114 | |
bb7189dc | 1115 | state = state && h->dev->ops->get_status(h); |
b5996f11 | 1116 | |
bb7189dc QX |
1117 | if (state != priv->link) { |
1118 | if (state) { | |
1119 | netif_carrier_on(ndev); | |
1120 | netif_tx_wake_all_queues(ndev); | |
1121 | netdev_info(ndev, "link up\n"); | |
1122 | } else { | |
1123 | netif_carrier_off(ndev); | |
1124 | netdev_info(ndev, "link down\n"); | |
1125 | } | |
1126 | priv->link = state; | |
1127 | } | |
b5996f11 | 1128 | } |
1129 | ||
1130 | /** | |
1131 | *hns_nic_init_phy - init phy | |
1132 | *@ndev: net device | |
1133 | *@h: ae handle | |
1134 | * Return 0 on success, negative on failure | |
1135 | */ | |
1136 | int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h) | |
1137 | { | |
3c1bcc86 | 1138 | __ETHTOOL_DECLARE_LINK_MODE_MASK(supported) = { 0, }; |
652d39b0 KY |
1139 | struct phy_device *phy_dev = h->phy_dev; |
1140 | int ret; | |
b5996f11 | 1141 | |
652d39b0 | 1142 | if (!h->phy_dev) |
b5996f11 | 1143 | return 0; |
1144 | ||
c77804be YL |
1145 | ethtool_convert_legacy_u32_to_link_mode(supported, h->if_support); |
1146 | linkmode_and(phy_dev->supported, phy_dev->supported, supported); | |
1147 | linkmode_copy(phy_dev->advertising, phy_dev->supported); | |
1148 | ||
1149 | if (h->phy_if == PHY_INTERFACE_MODE_XGMII) | |
1150 | phy_dev->autoneg = false; | |
1151 | ||
652d39b0 KY |
1152 | if (h->phy_if != PHY_INTERFACE_MODE_XGMII) { |
1153 | phy_dev->dev_flags = 0; | |
b5996f11 | 1154 | |
652d39b0 KY |
1155 | ret = phy_connect_direct(ndev, phy_dev, hns_nic_adjust_link, |
1156 | h->phy_if); | |
1157 | } else { | |
1158 | ret = phy_attach_direct(ndev, phy_dev, 0, h->phy_if); | |
1159 | } | |
1160 | if (unlikely(ret)) | |
1161 | return -ENODEV; | |
b5996f11 | 1162 | |
20e79a0a YL |
1163 | phy_attached_info(phy_dev); |
1164 | ||
b5996f11 | 1165 | return 0; |
1166 | } | |
1167 | ||
1168 | static int hns_nic_ring_open(struct net_device *netdev, int idx) | |
1169 | { | |
1170 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1171 | struct hnae_handle *h = priv->ae_handle; | |
1172 | ||
1173 | napi_enable(&priv->ring_data[idx].napi); | |
1174 | ||
1175 | enable_irq(priv->ring_data[idx].ring->irq); | |
1176 | h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0); | |
1177 | ||
1178 | return 0; | |
1179 | } | |
1180 | ||
1181 | static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p) | |
1182 | { | |
1183 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1184 | struct hnae_handle *h = priv->ae_handle; | |
1185 | struct sockaddr *mac_addr = p; | |
1186 | int ret; | |
1187 | ||
1188 | if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data)) | |
1189 | return -EADDRNOTAVAIL; | |
1190 | ||
1191 | ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data); | |
1192 | if (ret) { | |
1193 | netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret); | |
1194 | return ret; | |
1195 | } | |
1196 | ||
1197 | memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len); | |
1198 | ||
1199 | return 0; | |
1200 | } | |
1201 | ||
336a443b | 1202 | static void hns_nic_update_stats(struct net_device *netdev) |
b5996f11 | 1203 | { |
1204 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1205 | struct hnae_handle *h = priv->ae_handle; | |
1206 | ||
1207 | h->dev->ops->update_stats(h, &netdev->stats); | |
1208 | } | |
1209 | ||
1210 | /* set mac addr if it is configed. or leave it to the AE driver */ | |
1211 | static void hns_init_mac_addr(struct net_device *ndev) | |
1212 | { | |
1213 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
b5996f11 | 1214 | |
6162928c | 1215 | if (!device_get_mac_address(priv->dev, ndev->dev_addr, ETH_ALEN)) { |
b5996f11 | 1216 | eth_hw_addr_random(ndev); |
1217 | dev_warn(priv->dev, "No valid mac, use random mac %pM", | |
1218 | ndev->dev_addr); | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | static void hns_nic_ring_close(struct net_device *netdev, int idx) | |
1223 | { | |
1224 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1225 | struct hnae_handle *h = priv->ae_handle; | |
1226 | ||
1227 | h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1); | |
1228 | disable_irq(priv->ring_data[idx].ring->irq); | |
1229 | ||
1230 | napi_disable(&priv->ring_data[idx].napi); | |
1231 | } | |
1232 | ||
ba2d0791 | 1233 | static int hns_nic_init_affinity_mask(int q_num, int ring_idx, |
1234 | struct hnae_ring *ring, cpumask_t *mask) | |
b5996f11 | 1235 | { |
b5996f11 | 1236 | int cpu; |
ff3edc9b | 1237 | |
c8ad0cf3 | 1238 | /* Different irq balance between 16core and 32core. |
ba2d0791 | 1239 | * The cpu mask set by ring index according to the ring flag |
1240 | * which indicate the ring is tx or rx. | |
1241 | */ | |
1242 | if (q_num == num_possible_cpus()) { | |
1243 | if (is_tx_ring(ring)) | |
1244 | cpu = ring_idx; | |
1245 | else | |
1246 | cpu = ring_idx - q_num; | |
13ac695e | 1247 | } else { |
ba2d0791 | 1248 | if (is_tx_ring(ring)) |
1249 | cpu = ring_idx * 2; | |
1250 | else | |
1251 | cpu = (ring_idx - q_num) * 2 + 1; | |
13ac695e | 1252 | } |
ff3edc9b | 1253 | |
ba2d0791 | 1254 | cpumask_clear(mask); |
1255 | cpumask_set_cpu(cpu, mask); | |
1256 | ||
1257 | return cpu; | |
13ac695e S |
1258 | } |
1259 | ||
c82bd077 YL |
1260 | static void hns_nic_free_irq(int q_num, struct hns_nic_priv *priv) |
1261 | { | |
1262 | int i; | |
1263 | ||
1264 | for (i = 0; i < q_num * 2; i++) { | |
1265 | if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) { | |
1266 | irq_set_affinity_hint(priv->ring_data[i].ring->irq, | |
1267 | NULL); | |
1268 | free_irq(priv->ring_data[i].ring->irq, | |
1269 | &priv->ring_data[i]); | |
1270 | priv->ring_data[i].ring->irq_init_flag = | |
1271 | RCB_IRQ_NOT_INITED; | |
1272 | } | |
1273 | } | |
1274 | } | |
1275 | ||
13ac695e S |
1276 | static int hns_nic_init_irq(struct hns_nic_priv *priv) |
1277 | { | |
1278 | struct hnae_handle *h = priv->ae_handle; | |
1279 | struct hns_nic_ring_data *rd; | |
1280 | int i; | |
1281 | int ret; | |
ba2d0791 | 1282 | int cpu; |
13ac695e | 1283 | |
b5996f11 | 1284 | for (i = 0; i < h->q_num * 2; i++) { |
1285 | rd = &priv->ring_data[i]; | |
1286 | ||
1287 | if (rd->ring->irq_init_flag == RCB_IRQ_INITED) | |
1288 | break; | |
1289 | ||
1290 | snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN, | |
1291 | "%s-%s%d", priv->netdev->name, | |
ba2d0791 | 1292 | (is_tx_ring(rd->ring) ? "tx" : "rx"), rd->queue_index); |
b5996f11 | 1293 | |
1294 | rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0'; | |
1295 | ||
5a6bd84f | 1296 | irq_set_status_flags(rd->ring->irq, IRQ_NOAUTOEN); |
b5996f11 | 1297 | ret = request_irq(rd->ring->irq, |
1298 | hns_irq_handle, 0, rd->ring->ring_name, rd); | |
1299 | if (ret) { | |
1300 | netdev_err(priv->netdev, "request irq(%d) fail\n", | |
1301 | rd->ring->irq); | |
c82bd077 | 1302 | goto out_free_irq; |
b5996f11 | 1303 | } |
ba2d0791 | 1304 | |
1305 | cpu = hns_nic_init_affinity_mask(h->q_num, i, | |
1306 | rd->ring, &rd->mask); | |
1307 | ||
1308 | if (cpu_online(cpu)) | |
1309 | irq_set_affinity_hint(rd->ring->irq, | |
1310 | &rd->mask); | |
1311 | ||
b5996f11 | 1312 | rd->ring->irq_init_flag = RCB_IRQ_INITED; |
b5996f11 | 1313 | } |
1314 | ||
1315 | return 0; | |
c82bd077 YL |
1316 | |
1317 | out_free_irq: | |
1318 | hns_nic_free_irq(h->q_num, priv); | |
1319 | return ret; | |
b5996f11 | 1320 | } |
1321 | ||
1322 | static int hns_nic_net_up(struct net_device *ndev) | |
1323 | { | |
1324 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1325 | struct hnae_handle *h = priv->ae_handle; | |
454784d8 | 1326 | int i, j; |
b5996f11 | 1327 | int ret; |
1328 | ||
5778b13b YL |
1329 | if (!test_bit(NIC_STATE_DOWN, &priv->state)) |
1330 | return 0; | |
1331 | ||
b5996f11 | 1332 | ret = hns_nic_init_irq(priv); |
1333 | if (ret != 0) { | |
1334 | netdev_err(ndev, "hns init irq failed! ret=%d\n", ret); | |
1335 | return ret; | |
1336 | } | |
1337 | ||
1338 | for (i = 0; i < h->q_num * 2; i++) { | |
1339 | ret = hns_nic_ring_open(ndev, i); | |
1340 | if (ret) | |
1341 | goto out_has_some_queues; | |
1342 | } | |
1343 | ||
b5996f11 | 1344 | ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr); |
1345 | if (ret) | |
1346 | goto out_set_mac_addr_err; | |
1347 | ||
1348 | ret = h->dev->ops->start ? h->dev->ops->start(h) : 0; | |
1349 | if (ret) | |
1350 | goto out_start_err; | |
1351 | ||
262b38cd PR |
1352 | if (ndev->phydev) |
1353 | phy_start(ndev->phydev); | |
b5996f11 | 1354 | |
1355 | clear_bit(NIC_STATE_DOWN, &priv->state); | |
1356 | (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ); | |
1357 | ||
1358 | return 0; | |
1359 | ||
1360 | out_start_err: | |
1361 | netif_stop_queue(ndev); | |
1362 | out_set_mac_addr_err: | |
b5996f11 | 1363 | out_has_some_queues: |
1364 | for (j = i - 1; j >= 0; j--) | |
1365 | hns_nic_ring_close(ndev, j); | |
1366 | ||
c82bd077 | 1367 | hns_nic_free_irq(h->q_num, priv); |
b5996f11 | 1368 | set_bit(NIC_STATE_DOWN, &priv->state); |
1369 | ||
1370 | return ret; | |
1371 | } | |
1372 | ||
1373 | static void hns_nic_net_down(struct net_device *ndev) | |
1374 | { | |
1375 | int i; | |
1376 | struct hnae_ae_ops *ops; | |
1377 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1378 | ||
1379 | if (test_and_set_bit(NIC_STATE_DOWN, &priv->state)) | |
1380 | return; | |
1381 | ||
1382 | (void)del_timer_sync(&priv->service_timer); | |
1383 | netif_tx_stop_all_queues(ndev); | |
1384 | netif_carrier_off(ndev); | |
1385 | netif_tx_disable(ndev); | |
1386 | priv->link = 0; | |
1387 | ||
262b38cd PR |
1388 | if (ndev->phydev) |
1389 | phy_stop(ndev->phydev); | |
b5996f11 | 1390 | |
1391 | ops = priv->ae_handle->dev->ops; | |
1392 | ||
1393 | if (ops->stop) | |
1394 | ops->stop(priv->ae_handle); | |
1395 | ||
1396 | netif_tx_stop_all_queues(ndev); | |
1397 | ||
1398 | for (i = priv->ae_handle->q_num - 1; i >= 0; i--) { | |
1399 | hns_nic_ring_close(ndev, i); | |
1400 | hns_nic_ring_close(ndev, i + priv->ae_handle->q_num); | |
1401 | ||
1402 | /* clean tx buffers*/ | |
1403 | hns_nic_tx_clr_all_bufs(priv->ring_data + i); | |
1404 | } | |
1405 | } | |
1406 | ||
1407 | void hns_nic_net_reset(struct net_device *ndev) | |
1408 | { | |
1409 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1410 | struct hnae_handle *handle = priv->ae_handle; | |
1411 | ||
1412 | while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state)) | |
1413 | usleep_range(1000, 2000); | |
1414 | ||
1415 | (void)hnae_reinit_handle(handle); | |
1416 | ||
1417 | clear_bit(NIC_STATE_RESETTING, &priv->state); | |
1418 | } | |
1419 | ||
1420 | void hns_nic_net_reinit(struct net_device *netdev) | |
1421 | { | |
1422 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
76b825ab | 1423 | enum hnae_port_type type = priv->ae_handle->port_type; |
b5996f11 | 1424 | |
860e9538 | 1425 | netif_trans_update(priv->netdev); |
b5996f11 | 1426 | while (test_and_set_bit(NIC_STATE_REINITING, &priv->state)) |
1427 | usleep_range(1000, 2000); | |
1428 | ||
1429 | hns_nic_net_down(netdev); | |
76b825ab LYS |
1430 | |
1431 | /* Only do hns_nic_net_reset in debug mode | |
1432 | * because of hardware limitation. | |
1433 | */ | |
1434 | if (type == HNAE_PORT_DEBUG) | |
1435 | hns_nic_net_reset(netdev); | |
1436 | ||
b5996f11 | 1437 | (void)hns_nic_net_up(netdev); |
1438 | clear_bit(NIC_STATE_REINITING, &priv->state); | |
1439 | } | |
1440 | ||
1441 | static int hns_nic_net_open(struct net_device *ndev) | |
1442 | { | |
1443 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1444 | struct hnae_handle *h = priv->ae_handle; | |
1445 | int ret; | |
1446 | ||
1447 | if (test_bit(NIC_STATE_TESTING, &priv->state)) | |
1448 | return -EBUSY; | |
1449 | ||
1450 | priv->link = 0; | |
1451 | netif_carrier_off(ndev); | |
1452 | ||
1453 | ret = netif_set_real_num_tx_queues(ndev, h->q_num); | |
1454 | if (ret < 0) { | |
1455 | netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n", | |
1456 | ret); | |
1457 | return ret; | |
1458 | } | |
1459 | ||
1460 | ret = netif_set_real_num_rx_queues(ndev, h->q_num); | |
1461 | if (ret < 0) { | |
1462 | netdev_err(ndev, | |
1463 | "netif_set_real_num_rx_queues fail, ret=%d!\n", ret); | |
1464 | return ret; | |
1465 | } | |
1466 | ||
1467 | ret = hns_nic_net_up(ndev); | |
1468 | if (ret) { | |
1469 | netdev_err(ndev, | |
1470 | "hns net up fail, ret=%d!\n", ret); | |
1471 | return ret; | |
1472 | } | |
1473 | ||
1474 | return 0; | |
1475 | } | |
1476 | ||
1477 | static int hns_nic_net_stop(struct net_device *ndev) | |
1478 | { | |
1479 | hns_nic_net_down(ndev); | |
1480 | ||
1481 | return 0; | |
1482 | } | |
1483 | ||
1484 | static void hns_tx_timeout_reset(struct hns_nic_priv *priv); | |
a57275d3 | 1485 | #define HNS_TX_TIMEO_LIMIT (40 * HZ) |
0290bd29 | 1486 | static void hns_nic_net_timeout(struct net_device *ndev, unsigned int txqueue) |
b5996f11 | 1487 | { |
1488 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1489 | ||
a57275d3 YL |
1490 | if (ndev->watchdog_timeo < HNS_TX_TIMEO_LIMIT) { |
1491 | ndev->watchdog_timeo *= 2; | |
1492 | netdev_info(ndev, "watchdog_timo changed to %d.\n", | |
1493 | ndev->watchdog_timeo); | |
1494 | } else { | |
1495 | ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT; | |
1496 | hns_tx_timeout_reset(priv); | |
1497 | } | |
b5996f11 | 1498 | } |
1499 | ||
b5996f11 | 1500 | static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb, |
1501 | struct net_device *ndev) | |
1502 | { | |
1503 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
b5996f11 | 1504 | |
99d51897 | 1505 | assert(skb->queue_mapping < priv->ae_handle->q_num); |
27463ad9 YL |
1506 | |
1507 | return hns_nic_net_xmit_hw(ndev, skb, | |
1508 | &tx_ring_data(priv, skb->queue_mapping)); | |
b5996f11 | 1509 | } |
1510 | ||
b29bd412 | 1511 | static void hns_nic_drop_rx_fetch(struct hns_nic_ring_data *ring_data, |
1512 | struct sk_buff *skb) | |
1513 | { | |
1514 | dev_kfree_skb_any(skb); | |
1515 | } | |
1516 | ||
1517 | #define HNS_LB_TX_RING 0 | |
1518 | static struct sk_buff *hns_assemble_skb(struct net_device *ndev) | |
1519 | { | |
1520 | struct sk_buff *skb; | |
1521 | struct ethhdr *ethhdr; | |
1522 | int frame_len; | |
1523 | ||
1524 | /* allocate test skb */ | |
1525 | skb = alloc_skb(64, GFP_KERNEL); | |
1526 | if (!skb) | |
1527 | return NULL; | |
1528 | ||
1529 | skb_put(skb, 64); | |
1530 | skb->dev = ndev; | |
1531 | memset(skb->data, 0xFF, skb->len); | |
1532 | ||
1533 | /* must be tcp/ip package */ | |
1534 | ethhdr = (struct ethhdr *)skb->data; | |
1535 | ethhdr->h_proto = htons(ETH_P_IP); | |
1536 | ||
1537 | frame_len = skb->len & (~1ul); | |
1538 | memset(&skb->data[frame_len / 2], 0xAA, | |
1539 | frame_len / 2 - 1); | |
1540 | ||
1541 | skb->queue_mapping = HNS_LB_TX_RING; | |
1542 | ||
1543 | return skb; | |
1544 | } | |
1545 | ||
1546 | static int hns_enable_serdes_lb(struct net_device *ndev) | |
1547 | { | |
1548 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1549 | struct hnae_handle *h = priv->ae_handle; | |
1550 | struct hnae_ae_ops *ops = h->dev->ops; | |
1551 | int speed, duplex; | |
1552 | int ret; | |
1553 | ||
1554 | ret = ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 1); | |
1555 | if (ret) | |
1556 | return ret; | |
1557 | ||
1558 | ret = ops->start ? ops->start(h) : 0; | |
1559 | if (ret) | |
1560 | return ret; | |
1561 | ||
1562 | /* link adjust duplex*/ | |
1563 | if (h->phy_if != PHY_INTERFACE_MODE_XGMII) | |
1564 | speed = 1000; | |
1565 | else | |
1566 | speed = 10000; | |
1567 | duplex = 1; | |
1568 | ||
1569 | ops->adjust_link(h, speed, duplex); | |
1570 | ||
1571 | /* wait h/w ready */ | |
1572 | mdelay(300); | |
1573 | ||
1574 | return 0; | |
1575 | } | |
1576 | ||
1577 | static void hns_disable_serdes_lb(struct net_device *ndev) | |
1578 | { | |
1579 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1580 | struct hnae_handle *h = priv->ae_handle; | |
1581 | struct hnae_ae_ops *ops = h->dev->ops; | |
1582 | ||
1583 | ops->stop(h); | |
1584 | ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 0); | |
1585 | } | |
1586 | ||
1587 | /** | |
1588 | *hns_nic_clear_all_rx_fetch - clear the chip fetched descriptions. The | |
1589 | *function as follows: | |
1590 | * 1. if one rx ring has found the page_offset is not equal 0 between head | |
1591 | * and tail, it means that the chip fetched the wrong descs for the ring | |
1592 | * which buffer size is 4096. | |
1593 | * 2. we set the chip serdes loopback and set rss indirection to the ring. | |
1594 | * 3. construct 64-bytes ip broadcast packages, wait the associated rx ring | |
c8ad0cf3 | 1595 | * receiving all packages and it will fetch new descriptions. |
b29bd412 | 1596 | * 4. recover to the original state. |
1597 | * | |
1598 | *@ndev: net device | |
1599 | */ | |
1600 | static int hns_nic_clear_all_rx_fetch(struct net_device *ndev) | |
1601 | { | |
1602 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1603 | struct hnae_handle *h = priv->ae_handle; | |
1604 | struct hnae_ae_ops *ops = h->dev->ops; | |
1605 | struct hns_nic_ring_data *rd; | |
1606 | struct hnae_ring *ring; | |
1607 | struct sk_buff *skb; | |
1608 | u32 *org_indir; | |
1609 | u32 *cur_indir; | |
1610 | int indir_size; | |
1611 | int head, tail; | |
1612 | int fetch_num; | |
1613 | int i, j; | |
1614 | bool found; | |
1615 | int retry_times; | |
1616 | int ret = 0; | |
1617 | ||
1618 | /* alloc indir memory */ | |
1619 | indir_size = ops->get_rss_indir_size(h) * sizeof(*org_indir); | |
1620 | org_indir = kzalloc(indir_size, GFP_KERNEL); | |
1621 | if (!org_indir) | |
1622 | return -ENOMEM; | |
1623 | ||
c8ad0cf3 | 1624 | /* store the original indirection */ |
b29bd412 | 1625 | ops->get_rss(h, org_indir, NULL, NULL); |
1626 | ||
1627 | cur_indir = kzalloc(indir_size, GFP_KERNEL); | |
1628 | if (!cur_indir) { | |
1629 | ret = -ENOMEM; | |
1630 | goto cur_indir_alloc_err; | |
1631 | } | |
1632 | ||
1633 | /* set loopback */ | |
1634 | if (hns_enable_serdes_lb(ndev)) { | |
1635 | ret = -EINVAL; | |
1636 | goto enable_serdes_lb_err; | |
1637 | } | |
1638 | ||
1639 | /* foreach every rx ring to clear fetch desc */ | |
1640 | for (i = 0; i < h->q_num; i++) { | |
1641 | ring = &h->qs[i]->rx_ring; | |
1642 | head = readl_relaxed(ring->io_base + RCB_REG_HEAD); | |
1643 | tail = readl_relaxed(ring->io_base + RCB_REG_TAIL); | |
1644 | found = false; | |
1645 | fetch_num = ring_dist(ring, head, tail); | |
1646 | ||
1647 | while (head != tail) { | |
1648 | if (ring->desc_cb[head].page_offset != 0) { | |
1649 | found = true; | |
1650 | break; | |
1651 | } | |
1652 | ||
1653 | head++; | |
1654 | if (head == ring->desc_num) | |
1655 | head = 0; | |
1656 | } | |
1657 | ||
1658 | if (found) { | |
1659 | for (j = 0; j < indir_size / sizeof(*org_indir); j++) | |
1660 | cur_indir[j] = i; | |
1661 | ops->set_rss(h, cur_indir, NULL, 0); | |
1662 | ||
1663 | for (j = 0; j < fetch_num; j++) { | |
1664 | /* alloc one skb and init */ | |
1665 | skb = hns_assemble_skb(ndev); | |
143c253f JJB |
1666 | if (!skb) { |
1667 | ret = -ENOMEM; | |
b29bd412 | 1668 | goto out; |
143c253f | 1669 | } |
b29bd412 | 1670 | rd = &tx_ring_data(priv, skb->queue_mapping); |
1671 | hns_nic_net_xmit_hw(ndev, skb, rd); | |
1672 | ||
1673 | retry_times = 0; | |
1674 | while (retry_times++ < 10) { | |
1675 | mdelay(10); | |
1676 | /* clean rx */ | |
1677 | rd = &rx_ring_data(priv, i); | |
1678 | if (rd->poll_one(rd, fetch_num, | |
1679 | hns_nic_drop_rx_fetch)) | |
1680 | break; | |
1681 | } | |
1682 | ||
1683 | retry_times = 0; | |
1684 | while (retry_times++ < 10) { | |
1685 | mdelay(10); | |
1686 | /* clean tx ring 0 send package */ | |
1687 | rd = &tx_ring_data(priv, | |
1688 | HNS_LB_TX_RING); | |
1689 | if (rd->poll_one(rd, fetch_num, NULL)) | |
1690 | break; | |
1691 | } | |
1692 | } | |
1693 | } | |
1694 | } | |
1695 | ||
1696 | out: | |
1697 | /* restore everything */ | |
1698 | ops->set_rss(h, org_indir, NULL, 0); | |
1699 | hns_disable_serdes_lb(ndev); | |
1700 | enable_serdes_lb_err: | |
1701 | kfree(cur_indir); | |
1702 | cur_indir_alloc_err: | |
1703 | kfree(org_indir); | |
1704 | ||
1705 | return ret; | |
1706 | } | |
1707 | ||
b5996f11 | 1708 | static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu) |
1709 | { | |
1710 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1711 | struct hnae_handle *h = priv->ae_handle; | |
b29bd412 | 1712 | bool if_running = netif_running(ndev); |
b5996f11 | 1713 | int ret; |
1714 | ||
b29bd412 | 1715 | /* MTU < 68 is an error and causes problems on some kernels */ |
1716 | if (new_mtu < 68) | |
1717 | return -EINVAL; | |
1718 | ||
1719 | /* MTU no change */ | |
1720 | if (new_mtu == ndev->mtu) | |
1721 | return 0; | |
1722 | ||
b5996f11 | 1723 | if (!h->dev->ops->set_mtu) |
1724 | return -ENOTSUPP; | |
1725 | ||
b29bd412 | 1726 | if (if_running) { |
b5996f11 | 1727 | (void)hns_nic_net_stop(ndev); |
1728 | msleep(100); | |
b29bd412 | 1729 | } |
b5996f11 | 1730 | |
b29bd412 | 1731 | if (priv->enet_ver != AE_VERSION_1 && |
1732 | ndev->mtu <= BD_SIZE_2048_MAX_MTU && | |
1733 | new_mtu > BD_SIZE_2048_MAX_MTU) { | |
1734 | /* update desc */ | |
1735 | hnae_reinit_all_ring_desc(h); | |
b5996f11 | 1736 | |
b29bd412 | 1737 | /* clear the package which the chip has fetched */ |
1738 | ret = hns_nic_clear_all_rx_fetch(ndev); | |
1739 | ||
1740 | /* the page offset must be consist with desc */ | |
1741 | hnae_reinit_all_ring_page_off(h); | |
1742 | ||
1743 | if (ret) { | |
1744 | netdev_err(ndev, "clear the fetched desc fail\n"); | |
1745 | goto out; | |
1746 | } | |
1747 | } | |
1748 | ||
1749 | ret = h->dev->ops->set_mtu(h, new_mtu); | |
1750 | if (ret) { | |
1751 | netdev_err(ndev, "set mtu fail, return value %d\n", | |
1752 | ret); | |
1753 | goto out; | |
b5996f11 | 1754 | } |
1755 | ||
b29bd412 | 1756 | /* finally, set new mtu to netdevice */ |
1757 | ndev->mtu = new_mtu; | |
1758 | ||
1759 | out: | |
1760 | if (if_running) { | |
1761 | if (hns_nic_net_open(ndev)) { | |
1762 | netdev_err(ndev, "hns net open fail\n"); | |
1763 | ret = -EINVAL; | |
1764 | } | |
1765 | } | |
b5996f11 | 1766 | |
1767 | return ret; | |
1768 | } | |
1769 | ||
38f616da S |
1770 | static int hns_nic_set_features(struct net_device *netdev, |
1771 | netdev_features_t features) | |
1772 | { | |
1773 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
38f616da S |
1774 | |
1775 | switch (priv->enet_ver) { | |
1776 | case AE_VERSION_1: | |
1777 | if (features & (NETIF_F_TSO | NETIF_F_TSO6)) | |
1778 | netdev_info(netdev, "enet v1 do not support tso!\n"); | |
1779 | break; | |
1780 | default: | |
1781 | if (features & (NETIF_F_TSO | NETIF_F_TSO6)) { | |
1782 | priv->ops.fill_desc = fill_tso_desc; | |
1783 | priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso; | |
1784 | /* The chip only support 7*4096 */ | |
1785 | netif_set_gso_max_size(netdev, 7 * 4096); | |
38f616da S |
1786 | } else { |
1787 | priv->ops.fill_desc = fill_v2_desc; | |
1788 | priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx; | |
38f616da S |
1789 | } |
1790 | break; | |
1791 | } | |
1792 | netdev->features = features; | |
1793 | return 0; | |
1794 | } | |
1795 | ||
1796 | static netdev_features_t hns_nic_fix_features( | |
1797 | struct net_device *netdev, netdev_features_t features) | |
1798 | { | |
1799 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1800 | ||
1801 | switch (priv->enet_ver) { | |
1802 | case AE_VERSION_1: | |
1803 | features &= ~(NETIF_F_TSO | NETIF_F_TSO6 | | |
1804 | NETIF_F_HW_VLAN_CTAG_FILTER); | |
1805 | break; | |
1806 | default: | |
1807 | break; | |
1808 | } | |
1809 | return features; | |
1810 | } | |
1811 | ||
66355f52 KY |
1812 | static int hns_nic_uc_sync(struct net_device *netdev, const unsigned char *addr) |
1813 | { | |
1814 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1815 | struct hnae_handle *h = priv->ae_handle; | |
1816 | ||
1817 | if (h->dev->ops->add_uc_addr) | |
1818 | return h->dev->ops->add_uc_addr(h, addr); | |
1819 | ||
1820 | return 0; | |
1821 | } | |
1822 | ||
1823 | static int hns_nic_uc_unsync(struct net_device *netdev, | |
1824 | const unsigned char *addr) | |
1825 | { | |
1826 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1827 | struct hnae_handle *h = priv->ae_handle; | |
1828 | ||
1829 | if (h->dev->ops->rm_uc_addr) | |
1830 | return h->dev->ops->rm_uc_addr(h, addr); | |
1831 | ||
1832 | return 0; | |
1833 | } | |
1834 | ||
b5996f11 | 1835 | /** |
d0ea5cbd | 1836 | * hns_set_multicast_list - set mutl mac address |
43ec0f07 | 1837 | * @ndev: net device |
b5996f11 | 1838 | * |
1839 | * return void | |
1840 | */ | |
336a443b | 1841 | static void hns_set_multicast_list(struct net_device *ndev) |
b5996f11 | 1842 | { |
1843 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1844 | struct hnae_handle *h = priv->ae_handle; | |
1845 | struct netdev_hw_addr *ha = NULL; | |
1846 | ||
1847 | if (!h) { | |
1848 | netdev_err(ndev, "hnae handle is null\n"); | |
1849 | return; | |
1850 | } | |
1851 | ||
ec2cafe6 KY |
1852 | if (h->dev->ops->clr_mc_addr) |
1853 | if (h->dev->ops->clr_mc_addr(h)) | |
1854 | netdev_err(ndev, "clear multicast address fail\n"); | |
1855 | ||
b5996f11 | 1856 | if (h->dev->ops->set_mc_addr) { |
1857 | netdev_for_each_mc_addr(ha, ndev) | |
1858 | if (h->dev->ops->set_mc_addr(h, ha->addr)) | |
1859 | netdev_err(ndev, "set multicast fail\n"); | |
1860 | } | |
1861 | } | |
1862 | ||
336a443b | 1863 | static void hns_nic_set_rx_mode(struct net_device *ndev) |
4568637f | 1864 | { |
1865 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1866 | struct hnae_handle *h = priv->ae_handle; | |
1867 | ||
1868 | if (h->dev->ops->set_promisc_mode) { | |
1869 | if (ndev->flags & IFF_PROMISC) | |
1870 | h->dev->ops->set_promisc_mode(h, 1); | |
1871 | else | |
1872 | h->dev->ops->set_promisc_mode(h, 0); | |
1873 | } | |
1874 | ||
1875 | hns_set_multicast_list(ndev); | |
66355f52 KY |
1876 | |
1877 | if (__dev_uc_sync(ndev, hns_nic_uc_sync, hns_nic_uc_unsync)) | |
1878 | netdev_err(ndev, "sync uc address fail\n"); | |
4568637f | 1879 | } |
1880 | ||
bc1f4470 | 1881 | static void hns_nic_get_stats64(struct net_device *ndev, |
1882 | struct rtnl_link_stats64 *stats) | |
b5996f11 | 1883 | { |
7f8bcd91 | 1884 | int idx; |
b5996f11 | 1885 | u64 tx_bytes = 0; |
1886 | u64 rx_bytes = 0; | |
1887 | u64 tx_pkts = 0; | |
1888 | u64 rx_pkts = 0; | |
1889 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1890 | struct hnae_handle *h = priv->ae_handle; | |
1891 | ||
1892 | for (idx = 0; idx < h->q_num; idx++) { | |
1893 | tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes; | |
1894 | tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts; | |
1895 | rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes; | |
1896 | rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts; | |
1897 | } | |
1898 | ||
1899 | stats->tx_bytes = tx_bytes; | |
1900 | stats->tx_packets = tx_pkts; | |
1901 | stats->rx_bytes = rx_bytes; | |
1902 | stats->rx_packets = rx_pkts; | |
1903 | ||
1904 | stats->rx_errors = ndev->stats.rx_errors; | |
1905 | stats->multicast = ndev->stats.multicast; | |
1906 | stats->rx_length_errors = ndev->stats.rx_length_errors; | |
1907 | stats->rx_crc_errors = ndev->stats.rx_crc_errors; | |
1908 | stats->rx_missed_errors = ndev->stats.rx_missed_errors; | |
1909 | ||
1910 | stats->tx_errors = ndev->stats.tx_errors; | |
1911 | stats->rx_dropped = ndev->stats.rx_dropped; | |
1912 | stats->tx_dropped = ndev->stats.tx_dropped; | |
1913 | stats->collisions = ndev->stats.collisions; | |
1914 | stats->rx_over_errors = ndev->stats.rx_over_errors; | |
1915 | stats->rx_frame_errors = ndev->stats.rx_frame_errors; | |
1916 | stats->rx_fifo_errors = ndev->stats.rx_fifo_errors; | |
1917 | stats->tx_aborted_errors = ndev->stats.tx_aborted_errors; | |
1918 | stats->tx_carrier_errors = ndev->stats.tx_carrier_errors; | |
1919 | stats->tx_fifo_errors = ndev->stats.tx_fifo_errors; | |
1920 | stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors; | |
1921 | stats->tx_window_errors = ndev->stats.tx_window_errors; | |
1922 | stats->rx_compressed = ndev->stats.rx_compressed; | |
1923 | stats->tx_compressed = ndev->stats.tx_compressed; | |
b5996f11 | 1924 | } |
1925 | ||
2162a4a1 DH |
1926 | static u16 |
1927 | hns_nic_select_queue(struct net_device *ndev, struct sk_buff *skb, | |
a350ecce | 1928 | struct net_device *sb_dev) |
2162a4a1 DH |
1929 | { |
1930 | struct ethhdr *eth_hdr = (struct ethhdr *)skb->data; | |
1931 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
1932 | ||
1933 | /* fix hardware broadcast/multicast packets queue loopback */ | |
1934 | if (!AE_IS_VER1(priv->enet_ver) && | |
1935 | is_multicast_ether_addr(eth_hdr->h_dest)) | |
1936 | return 0; | |
1937 | else | |
a350ecce | 1938 | return netdev_pick_tx(ndev, skb, NULL); |
2162a4a1 DH |
1939 | } |
1940 | ||
b5996f11 | 1941 | static const struct net_device_ops hns_nic_netdev_ops = { |
1942 | .ndo_open = hns_nic_net_open, | |
1943 | .ndo_stop = hns_nic_net_stop, | |
1944 | .ndo_start_xmit = hns_nic_net_xmit, | |
1945 | .ndo_tx_timeout = hns_nic_net_timeout, | |
1946 | .ndo_set_mac_address = hns_nic_net_set_mac_address, | |
1947 | .ndo_change_mtu = hns_nic_change_mtu, | |
a7605370 | 1948 | .ndo_eth_ioctl = phy_do_ioctl_running, |
38f616da S |
1949 | .ndo_set_features = hns_nic_set_features, |
1950 | .ndo_fix_features = hns_nic_fix_features, | |
b5996f11 | 1951 | .ndo_get_stats64 = hns_nic_get_stats64, |
4568637f | 1952 | .ndo_set_rx_mode = hns_nic_set_rx_mode, |
2162a4a1 | 1953 | .ndo_select_queue = hns_nic_select_queue, |
b5996f11 | 1954 | }; |
1955 | ||
1956 | static void hns_nic_update_link_status(struct net_device *netdev) | |
1957 | { | |
1958 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
1959 | ||
1960 | struct hnae_handle *h = priv->ae_handle; | |
b5996f11 | 1961 | |
bb7189dc QX |
1962 | if (h->phy_dev) { |
1963 | if (h->phy_if != PHY_INTERFACE_MODE_XGMII) | |
1964 | return; | |
b5996f11 | 1965 | |
bb7189dc | 1966 | (void)genphy_read_status(h->phy_dev); |
b5996f11 | 1967 | } |
bb7189dc | 1968 | hns_nic_adjust_link(netdev); |
b5996f11 | 1969 | } |
1970 | ||
1971 | /* for dumping key regs*/ | |
1972 | static void hns_nic_dump(struct hns_nic_priv *priv) | |
1973 | { | |
1974 | struct hnae_handle *h = priv->ae_handle; | |
1975 | struct hnae_ae_ops *ops = h->dev->ops; | |
1976 | u32 *data, reg_num, i; | |
1977 | ||
1978 | if (ops->get_regs_len && ops->get_regs) { | |
1979 | reg_num = ops->get_regs_len(priv->ae_handle); | |
1980 | reg_num = (reg_num + 3ul) & ~3ul; | |
1981 | data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL); | |
1982 | if (data) { | |
1983 | ops->get_regs(priv->ae_handle, data); | |
1984 | for (i = 0; i < reg_num; i += 4) | |
1985 | pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n", | |
1986 | i, data[i], data[i + 1], | |
1987 | data[i + 2], data[i + 3]); | |
1988 | kfree(data); | |
1989 | } | |
1990 | } | |
1991 | ||
1992 | for (i = 0; i < h->q_num; i++) { | |
1993 | pr_info("tx_queue%d_next_to_clean:%d\n", | |
1994 | i, h->qs[i]->tx_ring.next_to_clean); | |
1995 | pr_info("tx_queue%d_next_to_use:%d\n", | |
1996 | i, h->qs[i]->tx_ring.next_to_use); | |
1997 | pr_info("rx_queue%d_next_to_clean:%d\n", | |
1998 | i, h->qs[i]->rx_ring.next_to_clean); | |
1999 | pr_info("rx_queue%d_next_to_use:%d\n", | |
2000 | i, h->qs[i]->rx_ring.next_to_use); | |
2001 | } | |
2002 | } | |
2003 | ||
f7211729 | 2004 | /* for resetting subtask */ |
b5996f11 | 2005 | static void hns_nic_reset_subtask(struct hns_nic_priv *priv) |
2006 | { | |
2007 | enum hnae_port_type type = priv->ae_handle->port_type; | |
2008 | ||
2009 | if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state)) | |
2010 | return; | |
2011 | clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state); | |
2012 | ||
2013 | /* If we're already down, removing or resetting, just bail */ | |
2014 | if (test_bit(NIC_STATE_DOWN, &priv->state) || | |
2015 | test_bit(NIC_STATE_REMOVING, &priv->state) || | |
2016 | test_bit(NIC_STATE_RESETTING, &priv->state)) | |
2017 | return; | |
2018 | ||
2019 | hns_nic_dump(priv); | |
13ac695e S |
2020 | netdev_info(priv->netdev, "try to reset %s port!\n", |
2021 | (type == HNAE_PORT_DEBUG ? "debug" : "service")); | |
b5996f11 | 2022 | |
2023 | rtnl_lock(); | |
90a505b9 | 2024 | /* put off any impending NetWatchDogTimeout */ |
860e9538 | 2025 | netif_trans_update(priv->netdev); |
76b825ab | 2026 | hns_nic_net_reinit(priv->netdev); |
90a505b9 | 2027 | |
b5996f11 | 2028 | rtnl_unlock(); |
2029 | } | |
2030 | ||
2031 | /* for doing service complete*/ | |
2032 | static void hns_nic_service_event_complete(struct hns_nic_priv *priv) | |
2033 | { | |
13ac695e | 2034 | WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state)); |
b4957ab0 | 2035 | /* make sure to commit the things */ |
b5996f11 | 2036 | smp_mb__before_atomic(); |
2037 | clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state); | |
2038 | } | |
2039 | ||
2040 | static void hns_nic_service_task(struct work_struct *work) | |
2041 | { | |
2042 | struct hns_nic_priv *priv | |
2043 | = container_of(work, struct hns_nic_priv, service_task); | |
2044 | struct hnae_handle *h = priv->ae_handle; | |
2045 | ||
a57275d3 | 2046 | hns_nic_reset_subtask(priv); |
b5996f11 | 2047 | hns_nic_update_link_status(priv->netdev); |
2048 | h->dev->ops->update_led_status(h); | |
2049 | hns_nic_update_stats(priv->netdev); | |
2050 | ||
b5996f11 | 2051 | hns_nic_service_event_complete(priv); |
2052 | } | |
2053 | ||
2054 | static void hns_nic_task_schedule(struct hns_nic_priv *priv) | |
2055 | { | |
2056 | if (!test_bit(NIC_STATE_DOWN, &priv->state) && | |
2057 | !test_bit(NIC_STATE_REMOVING, &priv->state) && | |
2058 | !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state)) | |
2059 | (void)schedule_work(&priv->service_task); | |
2060 | } | |
2061 | ||
d039ef68 | 2062 | static void hns_nic_service_timer(struct timer_list *t) |
b5996f11 | 2063 | { |
d039ef68 | 2064 | struct hns_nic_priv *priv = from_timer(priv, t, service_timer); |
b5996f11 | 2065 | |
2066 | (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ); | |
2067 | ||
2068 | hns_nic_task_schedule(priv); | |
2069 | } | |
2070 | ||
2071 | /** | |
2072 | * hns_tx_timeout_reset - initiate reset due to Tx timeout | |
2073 | * @priv: driver private struct | |
2074 | **/ | |
2075 | static void hns_tx_timeout_reset(struct hns_nic_priv *priv) | |
2076 | { | |
2077 | /* Do the reset outside of interrupt context */ | |
2078 | if (!test_bit(NIC_STATE_DOWN, &priv->state)) { | |
2079 | set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state); | |
2080 | netdev_warn(priv->netdev, | |
2081 | "initiating reset due to tx timeout(%llu,0x%lx)\n", | |
2082 | priv->tx_timeout_count, priv->state); | |
2083 | priv->tx_timeout_count++; | |
2084 | hns_nic_task_schedule(priv); | |
2085 | } | |
2086 | } | |
2087 | ||
2088 | static int hns_nic_init_ring_data(struct hns_nic_priv *priv) | |
2089 | { | |
2090 | struct hnae_handle *h = priv->ae_handle; | |
2091 | struct hns_nic_ring_data *rd; | |
4b34aa41 | 2092 | bool is_ver1 = AE_IS_VER1(priv->enet_ver); |
b5996f11 | 2093 | int i; |
2094 | ||
2095 | if (h->q_num > NIC_MAX_Q_PER_VF) { | |
2096 | netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num); | |
2097 | return -EINVAL; | |
2098 | } | |
2099 | ||
6396bb22 KC |
2100 | priv->ring_data = kzalloc(array3_size(h->q_num, |
2101 | sizeof(*priv->ring_data), 2), | |
b5996f11 | 2102 | GFP_KERNEL); |
2103 | if (!priv->ring_data) | |
2104 | return -ENOMEM; | |
2105 | ||
2106 | for (i = 0; i < h->q_num; i++) { | |
2107 | rd = &priv->ring_data[i]; | |
2108 | rd->queue_index = i; | |
2109 | rd->ring = &h->qs[i]->tx_ring; | |
2110 | rd->poll_one = hns_nic_tx_poll_one; | |
cee5add4 DH |
2111 | rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro : |
2112 | hns_nic_tx_fini_pro_v2; | |
b5996f11 | 2113 | |
2114 | netif_napi_add(priv->netdev, &rd->napi, | |
acb1ce15 | 2115 | hns_nic_common_poll, NAPI_POLL_WEIGHT); |
b5996f11 | 2116 | rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED; |
2117 | } | |
2118 | for (i = h->q_num; i < h->q_num * 2; i++) { | |
2119 | rd = &priv->ring_data[i]; | |
2120 | rd->queue_index = i - h->q_num; | |
2121 | rd->ring = &h->qs[i - h->q_num]->rx_ring; | |
2122 | rd->poll_one = hns_nic_rx_poll_one; | |
2123 | rd->ex_process = hns_nic_rx_up_pro; | |
cee5add4 DH |
2124 | rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro : |
2125 | hns_nic_rx_fini_pro_v2; | |
b5996f11 | 2126 | |
2127 | netif_napi_add(priv->netdev, &rd->napi, | |
acb1ce15 | 2128 | hns_nic_common_poll, NAPI_POLL_WEIGHT); |
b5996f11 | 2129 | rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED; |
2130 | } | |
2131 | ||
2132 | return 0; | |
2133 | } | |
2134 | ||
2135 | static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv) | |
2136 | { | |
2137 | struct hnae_handle *h = priv->ae_handle; | |
2138 | int i; | |
2139 | ||
2140 | for (i = 0; i < h->q_num * 2; i++) { | |
2141 | netif_napi_del(&priv->ring_data[i].napi); | |
2142 | if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) { | |
13ac695e S |
2143 | (void)irq_set_affinity_hint( |
2144 | priv->ring_data[i].ring->irq, | |
2145 | NULL); | |
b5996f11 | 2146 | free_irq(priv->ring_data[i].ring->irq, |
2147 | &priv->ring_data[i]); | |
2148 | } | |
2149 | ||
2150 | priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED; | |
2151 | } | |
2152 | kfree(priv->ring_data); | |
2153 | } | |
2154 | ||
13ac695e S |
2155 | static void hns_nic_set_priv_ops(struct net_device *netdev) |
2156 | { | |
2157 | struct hns_nic_priv *priv = netdev_priv(netdev); | |
64353af6 | 2158 | struct hnae_handle *h = priv->ae_handle; |
13ac695e S |
2159 | |
2160 | if (AE_IS_VER1(priv->enet_ver)) { | |
2161 | priv->ops.fill_desc = fill_desc; | |
2162 | priv->ops.get_rxd_bnum = get_rx_desc_bnum; | |
2163 | priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx; | |
2164 | } else { | |
2165 | priv->ops.get_rxd_bnum = get_v2rx_desc_bnum; | |
64353af6 S |
2166 | if ((netdev->features & NETIF_F_TSO) || |
2167 | (netdev->features & NETIF_F_TSO6)) { | |
2168 | priv->ops.fill_desc = fill_tso_desc; | |
2169 | priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso; | |
2170 | /* This chip only support 7*4096 */ | |
2171 | netif_set_gso_max_size(netdev, 7 * 4096); | |
64353af6 S |
2172 | } else { |
2173 | priv->ops.fill_desc = fill_v2_desc; | |
2174 | priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx; | |
2175 | } | |
6fe27464 DH |
2176 | /* enable tso when init |
2177 | * control tso on/off through TSE bit in bd | |
2178 | */ | |
2179 | h->dev->ops->set_tso_stats(h, 1); | |
13ac695e S |
2180 | } |
2181 | } | |
2182 | ||
b5996f11 | 2183 | static int hns_nic_try_get_ae(struct net_device *ndev) |
2184 | { | |
2185 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
2186 | struct hnae_handle *h; | |
2187 | int ret; | |
2188 | ||
2189 | h = hnae_get_handle(&priv->netdev->dev, | |
7b2acae6 | 2190 | priv->fwnode, priv->port_id, NULL); |
b5996f11 | 2191 | if (IS_ERR_OR_NULL(h)) { |
daa8cfd9 | 2192 | ret = -ENODEV; |
b5996f11 | 2193 | dev_dbg(priv->dev, "has not handle, register notifier!\n"); |
2194 | goto out; | |
2195 | } | |
2196 | priv->ae_handle = h; | |
2197 | ||
2198 | ret = hns_nic_init_phy(ndev, h); | |
2199 | if (ret) { | |
2200 | dev_err(priv->dev, "probe phy device fail!\n"); | |
2201 | goto out_init_phy; | |
2202 | } | |
2203 | ||
2204 | ret = hns_nic_init_ring_data(priv); | |
2205 | if (ret) { | |
2206 | ret = -ENOMEM; | |
2207 | goto out_init_ring_data; | |
2208 | } | |
2209 | ||
13ac695e S |
2210 | hns_nic_set_priv_ops(ndev); |
2211 | ||
b5996f11 | 2212 | ret = register_netdev(ndev); |
2213 | if (ret) { | |
2214 | dev_err(priv->dev, "probe register netdev fail!\n"); | |
2215 | goto out_reg_ndev_fail; | |
2216 | } | |
2217 | return 0; | |
2218 | ||
2219 | out_reg_ndev_fail: | |
2220 | hns_nic_uninit_ring_data(priv); | |
2221 | priv->ring_data = NULL; | |
2222 | out_init_phy: | |
2223 | out_init_ring_data: | |
2224 | hnae_put_handle(priv->ae_handle); | |
2225 | priv->ae_handle = NULL; | |
2226 | out: | |
2227 | return ret; | |
2228 | } | |
2229 | ||
2230 | static int hns_nic_notifier_action(struct notifier_block *nb, | |
2231 | unsigned long action, void *data) | |
2232 | { | |
2233 | struct hns_nic_priv *priv = | |
2234 | container_of(nb, struct hns_nic_priv, notifier_block); | |
2235 | ||
2236 | assert(action == HNAE_AE_REGISTER); | |
2237 | ||
2238 | if (!hns_nic_try_get_ae(priv->netdev)) { | |
2239 | hnae_unregister_notifier(&priv->notifier_block); | |
2240 | priv->notifier_block.notifier_call = NULL; | |
2241 | } | |
2242 | return 0; | |
2243 | } | |
2244 | ||
2245 | static int hns_nic_dev_probe(struct platform_device *pdev) | |
2246 | { | |
2247 | struct device *dev = &pdev->dev; | |
2248 | struct net_device *ndev; | |
2249 | struct hns_nic_priv *priv; | |
406adee9 | 2250 | u32 port_id; |
b5996f11 | 2251 | int ret; |
2252 | ||
2253 | ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF); | |
2254 | if (!ndev) | |
2255 | return -ENOMEM; | |
2256 | ||
2257 | platform_set_drvdata(pdev, ndev); | |
2258 | ||
2259 | priv = netdev_priv(ndev); | |
2260 | priv->dev = dev; | |
2261 | priv->netdev = ndev; | |
2262 | ||
63434888 KY |
2263 | if (dev_of_node(dev)) { |
2264 | struct device_node *ae_node; | |
b5996f11 | 2265 | |
63434888 KY |
2266 | if (of_device_is_compatible(dev->of_node, |
2267 | "hisilicon,hns-nic-v1")) | |
2268 | priv->enet_ver = AE_VERSION_1; | |
2269 | else | |
2270 | priv->enet_ver = AE_VERSION_2; | |
2271 | ||
2272 | ae_node = of_parse_phandle(dev->of_node, "ae-handle", 0); | |
d2083d0e PB |
2273 | if (!ae_node) { |
2274 | ret = -ENODEV; | |
63434888 KY |
2275 | dev_err(dev, "not find ae-handle\n"); |
2276 | goto out_read_prop_fail; | |
2277 | } | |
2278 | priv->fwnode = &ae_node->fwnode; | |
2279 | } else if (is_acpi_node(dev->fwnode)) { | |
977d5ad3 | 2280 | struct fwnode_reference_args args; |
63434888 KY |
2281 | |
2282 | if (acpi_dev_found(hns_enet_acpi_match[0].id)) | |
2283 | priv->enet_ver = AE_VERSION_1; | |
2284 | else if (acpi_dev_found(hns_enet_acpi_match[1].id)) | |
2285 | priv->enet_ver = AE_VERSION_2; | |
100e3345 DL |
2286 | else { |
2287 | ret = -ENXIO; | |
2288 | goto out_read_prop_fail; | |
2289 | } | |
63434888 KY |
2290 | |
2291 | /* try to find port-idx-in-ae first */ | |
2292 | ret = acpi_node_get_property_reference(dev->fwnode, | |
2293 | "ae-handle", 0, &args); | |
2294 | if (ret) { | |
2295 | dev_err(dev, "not find ae-handle\n"); | |
2296 | goto out_read_prop_fail; | |
2297 | } | |
977d5ad3 SA |
2298 | if (!is_acpi_device_node(args.fwnode)) { |
2299 | ret = -EINVAL; | |
2300 | goto out_read_prop_fail; | |
2301 | } | |
2302 | priv->fwnode = args.fwnode; | |
63434888 KY |
2303 | } else { |
2304 | dev_err(dev, "cannot read cfg data from OF or acpi\n"); | |
100e3345 DL |
2305 | ret = -ENXIO; |
2306 | goto out_read_prop_fail; | |
48189d6a | 2307 | } |
7b2acae6 | 2308 | |
6162928c | 2309 | ret = device_property_read_u32(dev, "port-idx-in-ae", &port_id); |
406adee9 YZZ |
2310 | if (ret) { |
2311 | /* only for old code compatible */ | |
6162928c | 2312 | ret = device_property_read_u32(dev, "port-id", &port_id); |
406adee9 YZZ |
2313 | if (ret) |
2314 | goto out_read_prop_fail; | |
2315 | /* for old dts, we need to caculate the port offset */ | |
2316 | port_id = port_id < HNS_SRV_OFFSET ? port_id + HNS_DEBUG_OFFSET | |
2317 | : port_id - HNS_SRV_OFFSET; | |
2318 | } | |
2319 | priv->port_id = port_id; | |
b5996f11 | 2320 | |
2321 | hns_init_mac_addr(ndev); | |
2322 | ||
2323 | ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT; | |
2324 | ndev->priv_flags |= IFF_UNICAST_FLT; | |
2325 | ndev->netdev_ops = &hns_nic_netdev_ops; | |
2326 | hns_ethtool_set_ops(ndev); | |
13ac695e | 2327 | |
b5996f11 | 2328 | ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
2329 | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | | |
2330 | NETIF_F_GRO; | |
2331 | ndev->vlan_features |= | |
2332 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM; | |
2333 | ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO; | |
2334 | ||
44770e11 JW |
2335 | /* MTU range: 68 - 9578 (v1) or 9706 (v2) */ |
2336 | ndev->min_mtu = MAC_MIN_MTU; | |
13ac695e S |
2337 | switch (priv->enet_ver) { |
2338 | case AE_VERSION_2: | |
7e74a19c | 2339 | ndev->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_NTUPLE; |
13ac695e S |
2340 | ndev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
2341 | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | | |
64353af6 | 2342 | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6; |
0d581ba3 | 2343 | ndev->vlan_features |= NETIF_F_TSO | NETIF_F_TSO6; |
44770e11 JW |
2344 | ndev->max_mtu = MAC_MAX_MTU_V2 - |
2345 | (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); | |
13ac695e S |
2346 | break; |
2347 | default: | |
44770e11 JW |
2348 | ndev->max_mtu = MAC_MAX_MTU - |
2349 | (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); | |
13ac695e S |
2350 | break; |
2351 | } | |
2352 | ||
b5996f11 | 2353 | SET_NETDEV_DEV(ndev, dev); |
2354 | ||
2355 | if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64))) | |
2356 | dev_dbg(dev, "set mask to 64bit\n"); | |
2357 | else | |
39c94417 | 2358 | dev_err(dev, "set mask to 64bit fail!\n"); |
b5996f11 | 2359 | |
2360 | /* carrier off reporting is important to ethtool even BEFORE open */ | |
2361 | netif_carrier_off(ndev); | |
2362 | ||
d039ef68 | 2363 | timer_setup(&priv->service_timer, hns_nic_service_timer, 0); |
b5996f11 | 2364 | INIT_WORK(&priv->service_task, hns_nic_service_task); |
2365 | ||
2366 | set_bit(NIC_STATE_SERVICE_INITED, &priv->state); | |
2367 | clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state); | |
2368 | set_bit(NIC_STATE_DOWN, &priv->state); | |
2369 | ||
2370 | if (hns_nic_try_get_ae(priv->netdev)) { | |
2371 | priv->notifier_block.notifier_call = hns_nic_notifier_action; | |
2372 | ret = hnae_register_notifier(&priv->notifier_block); | |
2373 | if (ret) { | |
2374 | dev_err(dev, "register notifier fail!\n"); | |
2375 | goto out_notify_fail; | |
2376 | } | |
2377 | dev_dbg(dev, "has not handle, register notifier!\n"); | |
2378 | } | |
2379 | ||
2380 | return 0; | |
2381 | ||
2382 | out_notify_fail: | |
2383 | (void)cancel_work_sync(&priv->service_task); | |
48189d6a | 2384 | out_read_prop_fail: |
263c6d75 YL |
2385 | /* safe for ACPI FW */ |
2386 | of_node_put(to_of_node(priv->fwnode)); | |
b5996f11 | 2387 | free_netdev(ndev); |
2388 | return ret; | |
2389 | } | |
2390 | ||
2391 | static int hns_nic_dev_remove(struct platform_device *pdev) | |
2392 | { | |
2393 | struct net_device *ndev = platform_get_drvdata(pdev); | |
2394 | struct hns_nic_priv *priv = netdev_priv(ndev); | |
2395 | ||
2396 | if (ndev->reg_state != NETREG_UNINITIALIZED) | |
2397 | unregister_netdev(ndev); | |
2398 | ||
2399 | if (priv->ring_data) | |
2400 | hns_nic_uninit_ring_data(priv); | |
2401 | priv->ring_data = NULL; | |
2402 | ||
262b38cd PR |
2403 | if (ndev->phydev) |
2404 | phy_disconnect(ndev->phydev); | |
b5996f11 | 2405 | |
2406 | if (!IS_ERR_OR_NULL(priv->ae_handle)) | |
2407 | hnae_put_handle(priv->ae_handle); | |
2408 | priv->ae_handle = NULL; | |
2409 | if (priv->notifier_block.notifier_call) | |
2410 | hnae_unregister_notifier(&priv->notifier_block); | |
2411 | priv->notifier_block.notifier_call = NULL; | |
2412 | ||
2413 | set_bit(NIC_STATE_REMOVING, &priv->state); | |
2414 | (void)cancel_work_sync(&priv->service_task); | |
2415 | ||
263c6d75 YL |
2416 | /* safe for ACPI FW */ |
2417 | of_node_put(to_of_node(priv->fwnode)); | |
2418 | ||
b5996f11 | 2419 | free_netdev(ndev); |
2420 | return 0; | |
2421 | } | |
2422 | ||
2423 | static const struct of_device_id hns_enet_of_match[] = { | |
2424 | {.compatible = "hisilicon,hns-nic-v1",}, | |
2425 | {.compatible = "hisilicon,hns-nic-v2",}, | |
2426 | {}, | |
2427 | }; | |
2428 | ||
2429 | MODULE_DEVICE_TABLE(of, hns_enet_of_match); | |
2430 | ||
2431 | static struct platform_driver hns_nic_dev_driver = { | |
2432 | .driver = { | |
2433 | .name = "hns-nic", | |
b5996f11 | 2434 | .of_match_table = hns_enet_of_match, |
63434888 | 2435 | .acpi_match_table = ACPI_PTR(hns_enet_acpi_match), |
b5996f11 | 2436 | }, |
2437 | .probe = hns_nic_dev_probe, | |
2438 | .remove = hns_nic_dev_remove, | |
2439 | }; | |
2440 | ||
2441 | module_platform_driver(hns_nic_dev_driver); | |
2442 | ||
2443 | MODULE_DESCRIPTION("HISILICON HNS Ethernet driver"); | |
2444 | MODULE_AUTHOR("Hisilicon, Inc."); | |
2445 | MODULE_LICENSE("GPL"); | |
2446 | MODULE_ALIAS("platform:hns-nic"); |