| 1 | /* |
| 2 | * Copyright (c) 2014-2015 Hisilicon Limited. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | */ |
| 9 | |
| 10 | #include <linux/clk.h> |
| 11 | #include <linux/cpumask.h> |
| 12 | #include <linux/etherdevice.h> |
| 13 | #include <linux/if_vlan.h> |
| 14 | #include <linux/interrupt.h> |
| 15 | #include <linux/io.h> |
| 16 | #include <linux/ip.h> |
| 17 | #include <linux/ipv6.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/phy.h> |
| 20 | #include <linux/platform_device.h> |
| 21 | #include <linux/skbuff.h> |
| 22 | |
| 23 | #include "hnae.h" |
| 24 | #include "hns_enet.h" |
| 25 | |
| 26 | #define NIC_MAX_Q_PER_VF 16 |
| 27 | #define HNS_NIC_TX_TIMEOUT (5 * HZ) |
| 28 | |
| 29 | #define SERVICE_TIMER_HZ (1 * HZ) |
| 30 | |
| 31 | #define NIC_TX_CLEAN_MAX_NUM 256 |
| 32 | #define NIC_RX_CLEAN_MAX_NUM 64 |
| 33 | |
| 34 | #define RCB_ERR_PRINT_CYCLE 1000 |
| 35 | |
| 36 | #define RCB_IRQ_NOT_INITED 0 |
| 37 | #define RCB_IRQ_INITED 1 |
| 38 | |
| 39 | static void fill_desc(struct hnae_ring *ring, void *priv, |
| 40 | int size, dma_addr_t dma, int frag_end, |
| 41 | int buf_num, enum hns_desc_type type) |
| 42 | { |
| 43 | struct hnae_desc *desc = &ring->desc[ring->next_to_use]; |
| 44 | struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; |
| 45 | struct sk_buff *skb; |
| 46 | __be16 protocol; |
| 47 | u32 ip_offset; |
| 48 | u32 asid_bufnum_pid = 0; |
| 49 | u32 flag_ipoffset = 0; |
| 50 | |
| 51 | desc_cb->priv = priv; |
| 52 | desc_cb->length = size; |
| 53 | desc_cb->dma = dma; |
| 54 | desc_cb->type = type; |
| 55 | |
| 56 | desc->addr = cpu_to_le64(dma); |
| 57 | desc->tx.send_size = cpu_to_le16((u16)size); |
| 58 | |
| 59 | /*config bd buffer end */ |
| 60 | flag_ipoffset |= 1 << HNS_TXD_VLD_B; |
| 61 | |
| 62 | asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S; |
| 63 | |
| 64 | if (type == DESC_TYPE_SKB) { |
| 65 | skb = (struct sk_buff *)priv; |
| 66 | |
| 67 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
| 68 | protocol = skb->protocol; |
| 69 | ip_offset = ETH_HLEN; |
| 70 | |
| 71 | /*if it is a SW VLAN check the next protocol*/ |
| 72 | if (protocol == htons(ETH_P_8021Q)) { |
| 73 | ip_offset += VLAN_HLEN; |
| 74 | protocol = vlan_get_protocol(skb); |
| 75 | skb->protocol = protocol; |
| 76 | } |
| 77 | |
| 78 | if (skb->protocol == htons(ETH_P_IP)) { |
| 79 | flag_ipoffset |= 1 << HNS_TXD_L3CS_B; |
| 80 | /* check for tcp/udp header */ |
| 81 | flag_ipoffset |= 1 << HNS_TXD_L4CS_B; |
| 82 | |
| 83 | } else if (skb->protocol == htons(ETH_P_IPV6)) { |
| 84 | /* ipv6 has not l3 cs, check for L4 header */ |
| 85 | flag_ipoffset |= 1 << HNS_TXD_L4CS_B; |
| 86 | } |
| 87 | |
| 88 | flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S; |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | flag_ipoffset |= frag_end << HNS_TXD_FE_B; |
| 93 | |
| 94 | desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid); |
| 95 | desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset); |
| 96 | |
| 97 | ring_ptr_move_fw(ring, next_to_use); |
| 98 | } |
| 99 | |
| 100 | static void unfill_desc(struct hnae_ring *ring) |
| 101 | { |
| 102 | ring_ptr_move_bw(ring, next_to_use); |
| 103 | } |
| 104 | |
| 105 | int hns_nic_net_xmit_hw(struct net_device *ndev, |
| 106 | struct sk_buff *skb, |
| 107 | struct hns_nic_ring_data *ring_data) |
| 108 | { |
| 109 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 110 | struct device *dev = priv->dev; |
| 111 | struct hnae_ring *ring = ring_data->ring; |
| 112 | struct netdev_queue *dev_queue; |
| 113 | struct skb_frag_struct *frag; |
| 114 | int buf_num; |
| 115 | dma_addr_t dma; |
| 116 | int size, next_to_use; |
| 117 | int i, j; |
| 118 | struct sk_buff *new_skb; |
| 119 | |
| 120 | assert(ring->max_desc_num_per_pkt <= ring->desc_num); |
| 121 | |
| 122 | /* no. of segments (plus a header) */ |
| 123 | buf_num = skb_shinfo(skb)->nr_frags + 1; |
| 124 | |
| 125 | if (unlikely(buf_num > ring->max_desc_num_per_pkt)) { |
| 126 | if (ring_space(ring) < 1) { |
| 127 | ring->stats.tx_busy++; |
| 128 | goto out_net_tx_busy; |
| 129 | } |
| 130 | |
| 131 | new_skb = skb_copy(skb, GFP_ATOMIC); |
| 132 | if (!new_skb) { |
| 133 | ring->stats.sw_err_cnt++; |
| 134 | netdev_err(ndev, "no memory to xmit!\n"); |
| 135 | goto out_err_tx_ok; |
| 136 | } |
| 137 | |
| 138 | dev_kfree_skb_any(skb); |
| 139 | skb = new_skb; |
| 140 | buf_num = 1; |
| 141 | assert(skb_shinfo(skb)->nr_frags == 1); |
| 142 | } else if (buf_num > ring_space(ring)) { |
| 143 | ring->stats.tx_busy++; |
| 144 | goto out_net_tx_busy; |
| 145 | } |
| 146 | next_to_use = ring->next_to_use; |
| 147 | |
| 148 | /* fill the first part */ |
| 149 | size = skb_headlen(skb); |
| 150 | dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE); |
| 151 | if (dma_mapping_error(dev, dma)) { |
| 152 | netdev_err(ndev, "TX head DMA map failed\n"); |
| 153 | ring->stats.sw_err_cnt++; |
| 154 | goto out_err_tx_ok; |
| 155 | } |
| 156 | fill_desc(ring, skb, size, dma, buf_num == 1 ? 1 : 0, buf_num, |
| 157 | DESC_TYPE_SKB); |
| 158 | |
| 159 | /* fill the fragments */ |
| 160 | for (i = 1; i < buf_num; i++) { |
| 161 | frag = &skb_shinfo(skb)->frags[i - 1]; |
| 162 | size = skb_frag_size(frag); |
| 163 | dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE); |
| 164 | if (dma_mapping_error(dev, dma)) { |
| 165 | netdev_err(ndev, "TX frag(%d) DMA map failed\n", i); |
| 166 | ring->stats.sw_err_cnt++; |
| 167 | goto out_map_frag_fail; |
| 168 | } |
| 169 | fill_desc(ring, skb_frag_page(frag), size, dma, |
| 170 | buf_num - 1 == i ? 1 : 0, buf_num, DESC_TYPE_PAGE); |
| 171 | } |
| 172 | |
| 173 | /*complete translate all packets*/ |
| 174 | dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping); |
| 175 | netdev_tx_sent_queue(dev_queue, skb->len); |
| 176 | |
| 177 | wmb(); /* commit all data before submit */ |
| 178 | assert(skb->queue_mapping < priv->ae_handle->q_num); |
| 179 | hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num); |
| 180 | ring->stats.tx_pkts++; |
| 181 | ring->stats.tx_bytes += skb->len; |
| 182 | |
| 183 | return NETDEV_TX_OK; |
| 184 | |
| 185 | out_map_frag_fail: |
| 186 | |
| 187 | for (j = i - 1; j > 0; j--) { |
| 188 | unfill_desc(ring); |
| 189 | next_to_use = ring->next_to_use; |
| 190 | dma_unmap_page(dev, ring->desc_cb[next_to_use].dma, |
| 191 | ring->desc_cb[next_to_use].length, |
| 192 | DMA_TO_DEVICE); |
| 193 | } |
| 194 | |
| 195 | unfill_desc(ring); |
| 196 | next_to_use = ring->next_to_use; |
| 197 | dma_unmap_single(dev, ring->desc_cb[next_to_use].dma, |
| 198 | ring->desc_cb[next_to_use].length, DMA_TO_DEVICE); |
| 199 | |
| 200 | out_err_tx_ok: |
| 201 | |
| 202 | dev_kfree_skb_any(skb); |
| 203 | return NETDEV_TX_OK; |
| 204 | |
| 205 | out_net_tx_busy: |
| 206 | |
| 207 | netif_stop_subqueue(ndev, skb->queue_mapping); |
| 208 | |
| 209 | /* Herbert's original patch had: |
| 210 | * smp_mb__after_netif_stop_queue(); |
| 211 | * but since that doesn't exist yet, just open code it. |
| 212 | */ |
| 213 | smp_mb(); |
| 214 | return NETDEV_TX_BUSY; |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * hns_nic_get_headlen - determine size of header for RSC/LRO/GRO/FCOE |
| 219 | * @data: pointer to the start of the headers |
| 220 | * @max: total length of section to find headers in |
| 221 | * |
| 222 | * This function is meant to determine the length of headers that will |
| 223 | * be recognized by hardware for LRO, GRO, and RSC offloads. The main |
| 224 | * motivation of doing this is to only perform one pull for IPv4 TCP |
| 225 | * packets so that we can do basic things like calculating the gso_size |
| 226 | * based on the average data per packet. |
| 227 | **/ |
| 228 | static unsigned int hns_nic_get_headlen(unsigned char *data, u32 flag, |
| 229 | unsigned int max_size) |
| 230 | { |
| 231 | unsigned char *network; |
| 232 | u8 hlen; |
| 233 | |
| 234 | /* this should never happen, but better safe than sorry */ |
| 235 | if (max_size < ETH_HLEN) |
| 236 | return max_size; |
| 237 | |
| 238 | /* initialize network frame pointer */ |
| 239 | network = data; |
| 240 | |
| 241 | /* set first protocol and move network header forward */ |
| 242 | network += ETH_HLEN; |
| 243 | |
| 244 | /* handle any vlan tag if present */ |
| 245 | if (hnae_get_field(flag, HNS_RXD_VLAN_M, HNS_RXD_VLAN_S) |
| 246 | == HNS_RX_FLAG_VLAN_PRESENT) { |
| 247 | if ((typeof(max_size))(network - data) > (max_size - VLAN_HLEN)) |
| 248 | return max_size; |
| 249 | |
| 250 | network += VLAN_HLEN; |
| 251 | } |
| 252 | |
| 253 | /* handle L3 protocols */ |
| 254 | if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S) |
| 255 | == HNS_RX_FLAG_L3ID_IPV4) { |
| 256 | if ((typeof(max_size))(network - data) > |
| 257 | (max_size - sizeof(struct iphdr))) |
| 258 | return max_size; |
| 259 | |
| 260 | /* access ihl as a u8 to avoid unaligned access on ia64 */ |
| 261 | hlen = (network[0] & 0x0F) << 2; |
| 262 | |
| 263 | /* verify hlen meets minimum size requirements */ |
| 264 | if (hlen < sizeof(struct iphdr)) |
| 265 | return network - data; |
| 266 | |
| 267 | /* record next protocol if header is present */ |
| 268 | } else if (hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S) |
| 269 | == HNS_RX_FLAG_L3ID_IPV6) { |
| 270 | if ((typeof(max_size))(network - data) > |
| 271 | (max_size - sizeof(struct ipv6hdr))) |
| 272 | return max_size; |
| 273 | |
| 274 | /* record next protocol */ |
| 275 | hlen = sizeof(struct ipv6hdr); |
| 276 | } else { |
| 277 | return network - data; |
| 278 | } |
| 279 | |
| 280 | /* relocate pointer to start of L4 header */ |
| 281 | network += hlen; |
| 282 | |
| 283 | /* finally sort out TCP/UDP */ |
| 284 | if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S) |
| 285 | == HNS_RX_FLAG_L4ID_TCP) { |
| 286 | if ((typeof(max_size))(network - data) > |
| 287 | (max_size - sizeof(struct tcphdr))) |
| 288 | return max_size; |
| 289 | |
| 290 | /* access doff as a u8 to avoid unaligned access on ia64 */ |
| 291 | hlen = (network[12] & 0xF0) >> 2; |
| 292 | |
| 293 | /* verify hlen meets minimum size requirements */ |
| 294 | if (hlen < sizeof(struct tcphdr)) |
| 295 | return network - data; |
| 296 | |
| 297 | network += hlen; |
| 298 | } else if (hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S) |
| 299 | == HNS_RX_FLAG_L4ID_UDP) { |
| 300 | if ((typeof(max_size))(network - data) > |
| 301 | (max_size - sizeof(struct udphdr))) |
| 302 | return max_size; |
| 303 | |
| 304 | network += sizeof(struct udphdr); |
| 305 | } |
| 306 | |
| 307 | /* If everything has gone correctly network should be the |
| 308 | * data section of the packet and will be the end of the header. |
| 309 | * If not then it probably represents the end of the last recognized |
| 310 | * header. |
| 311 | */ |
| 312 | if ((typeof(max_size))(network - data) < max_size) |
| 313 | return network - data; |
| 314 | else |
| 315 | return max_size; |
| 316 | } |
| 317 | |
| 318 | static void |
| 319 | hns_nic_reuse_page(struct hnae_desc_cb *desc_cb, int tsize, int last_offset) |
| 320 | { |
| 321 | /* avoid re-using remote pages,flag default unreuse */ |
| 322 | if (likely(page_to_nid(desc_cb->priv) == numa_node_id())) { |
| 323 | /* move offset up to the next cache line */ |
| 324 | desc_cb->page_offset += tsize; |
| 325 | |
| 326 | if (desc_cb->page_offset <= last_offset) { |
| 327 | desc_cb->reuse_flag = 1; |
| 328 | /* bump ref count on page before it is given*/ |
| 329 | get_page(desc_cb->priv); |
| 330 | } |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data, |
| 335 | struct sk_buff **out_skb, int *out_bnum) |
| 336 | { |
| 337 | struct hnae_ring *ring = ring_data->ring; |
| 338 | struct net_device *ndev = ring_data->napi.dev; |
| 339 | struct sk_buff *skb; |
| 340 | struct hnae_desc *desc; |
| 341 | struct hnae_desc_cb *desc_cb; |
| 342 | unsigned char *va; |
| 343 | int bnum, length, size, i, truesize, last_offset; |
| 344 | int pull_len; |
| 345 | u32 bnum_flag; |
| 346 | |
| 347 | last_offset = hnae_page_size(ring) - hnae_buf_size(ring); |
| 348 | desc = &ring->desc[ring->next_to_clean]; |
| 349 | desc_cb = &ring->desc_cb[ring->next_to_clean]; |
| 350 | length = le16_to_cpu(desc->rx.pkt_len); |
| 351 | bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag); |
| 352 | bnum = hnae_get_field(bnum_flag, HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S); |
| 353 | *out_bnum = bnum; |
| 354 | va = (unsigned char *)desc_cb->buf + desc_cb->page_offset; |
| 355 | |
| 356 | skb = *out_skb = napi_alloc_skb(&ring_data->napi, HNS_RX_HEAD_SIZE); |
| 357 | if (unlikely(!skb)) { |
| 358 | netdev_err(ndev, "alloc rx skb fail\n"); |
| 359 | ring->stats.sw_err_cnt++; |
| 360 | return -ENOMEM; |
| 361 | } |
| 362 | |
| 363 | if (length <= HNS_RX_HEAD_SIZE) { |
| 364 | memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long))); |
| 365 | |
| 366 | /* we can reuse buffer as-is, just make sure it is local */ |
| 367 | if (likely(page_to_nid(desc_cb->priv) == numa_node_id())) |
| 368 | desc_cb->reuse_flag = 1; |
| 369 | else /* this page cannot be reused so discard it */ |
| 370 | put_page(desc_cb->priv); |
| 371 | |
| 372 | ring_ptr_move_fw(ring, next_to_clean); |
| 373 | |
| 374 | if (unlikely(bnum != 1)) { /* check err*/ |
| 375 | *out_bnum = 1; |
| 376 | goto out_bnum_err; |
| 377 | } |
| 378 | } else { |
| 379 | ring->stats.seg_pkt_cnt++; |
| 380 | |
| 381 | pull_len = hns_nic_get_headlen(va, bnum_flag, HNS_RX_HEAD_SIZE); |
| 382 | memcpy(__skb_put(skb, pull_len), va, |
| 383 | ALIGN(pull_len, sizeof(long))); |
| 384 | |
| 385 | size = le16_to_cpu(desc->rx.size); |
| 386 | truesize = ALIGN(size, L1_CACHE_BYTES); |
| 387 | skb_add_rx_frag(skb, 0, desc_cb->priv, |
| 388 | desc_cb->page_offset + pull_len, |
| 389 | size - pull_len, truesize - pull_len); |
| 390 | |
| 391 | hns_nic_reuse_page(desc_cb, truesize, last_offset); |
| 392 | ring_ptr_move_fw(ring, next_to_clean); |
| 393 | |
| 394 | if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/ |
| 395 | *out_bnum = 1; |
| 396 | goto out_bnum_err; |
| 397 | } |
| 398 | for (i = 1; i < bnum; i++) { |
| 399 | desc = &ring->desc[ring->next_to_clean]; |
| 400 | desc_cb = &ring->desc_cb[ring->next_to_clean]; |
| 401 | size = le16_to_cpu(desc->rx.size); |
| 402 | truesize = ALIGN(size, L1_CACHE_BYTES); |
| 403 | skb_add_rx_frag(skb, i, desc_cb->priv, |
| 404 | desc_cb->page_offset, |
| 405 | size, truesize); |
| 406 | |
| 407 | hns_nic_reuse_page(desc_cb, truesize, last_offset); |
| 408 | ring_ptr_move_fw(ring, next_to_clean); |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | /* check except process, free skb and jump the desc */ |
| 413 | if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) { |
| 414 | out_bnum_err: |
| 415 | *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/ |
| 416 | netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n", |
| 417 | bnum, ring->max_desc_num_per_pkt, |
| 418 | length, (int)MAX_SKB_FRAGS, |
| 419 | ((u64 *)desc)[0], ((u64 *)desc)[1]); |
| 420 | ring->stats.err_bd_num++; |
| 421 | dev_kfree_skb_any(skb); |
| 422 | return -EDOM; |
| 423 | } |
| 424 | |
| 425 | bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag); |
| 426 | |
| 427 | if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) { |
| 428 | netdev_err(ndev, "no valid bd,%016llx,%016llx\n", |
| 429 | ((u64 *)desc)[0], ((u64 *)desc)[1]); |
| 430 | ring->stats.non_vld_descs++; |
| 431 | dev_kfree_skb_any(skb); |
| 432 | return -EINVAL; |
| 433 | } |
| 434 | |
| 435 | if (unlikely((!desc->rx.pkt_len) || |
| 436 | hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) { |
| 437 | if (!(ring->stats.err_pkt_len % RCB_ERR_PRINT_CYCLE)) |
| 438 | netdev_dbg(ndev, |
| 439 | "pkt_len(%u),drop(%u),%#llx,%#llx\n", |
| 440 | le16_to_cpu(desc->rx.pkt_len), |
| 441 | hnae_get_bit(bnum_flag, HNS_RXD_DROP_B), |
| 442 | ((u64 *)desc)[0], ((u64 *)desc)[1]); |
| 443 | ring->stats.err_pkt_len++; |
| 444 | dev_kfree_skb_any(skb); |
| 445 | return -EFAULT; |
| 446 | } |
| 447 | |
| 448 | if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) { |
| 449 | if (!(ring->stats.l2_err % RCB_ERR_PRINT_CYCLE)) |
| 450 | netdev_dbg(ndev, "L2 check err,%#llx,%#llx\n", |
| 451 | ((u64 *)desc)[0], ((u64 *)desc)[1]); |
| 452 | ring->stats.l2_err++; |
| 453 | dev_kfree_skb_any(skb); |
| 454 | return -EFAULT; |
| 455 | } |
| 456 | |
| 457 | ring->stats.rx_pkts++; |
| 458 | ring->stats.rx_bytes += skb->len; |
| 459 | |
| 460 | if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L3E_B) || |
| 461 | hnae_get_bit(bnum_flag, HNS_RXD_L4E_B))) { |
| 462 | if (!(ring->stats.l3l4_csum_err % RCB_ERR_PRINT_CYCLE)) |
| 463 | netdev_dbg(ndev, |
| 464 | "check err(%#x),%#llx,%#llx\n", |
| 465 | hnae_get_bit(bnum_flag, HNS_RXD_L3E_B) | |
| 466 | hnae_get_bit(bnum_flag, HNS_RXD_L4E_B), |
| 467 | ((u64 *)desc)[0], ((u64 *)desc)[1]); |
| 468 | ring->stats.l3l4_csum_err++; |
| 469 | return 0; |
| 470 | } |
| 471 | |
| 472 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
| 473 | |
| 474 | return 0; |
| 475 | } |
| 476 | |
| 477 | static void |
| 478 | hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count) |
| 479 | { |
| 480 | int i, ret; |
| 481 | struct hnae_desc_cb res_cbs; |
| 482 | struct hnae_desc_cb *desc_cb; |
| 483 | struct hnae_ring *ring = ring_data->ring; |
| 484 | struct net_device *ndev = ring_data->napi.dev; |
| 485 | |
| 486 | for (i = 0; i < cleand_count; i++) { |
| 487 | desc_cb = &ring->desc_cb[ring->next_to_use]; |
| 488 | if (desc_cb->reuse_flag) { |
| 489 | ring->stats.reuse_pg_cnt++; |
| 490 | hnae_reuse_buffer(ring, ring->next_to_use); |
| 491 | } else { |
| 492 | ret = hnae_reserve_buffer_map(ring, &res_cbs); |
| 493 | if (ret) { |
| 494 | ring->stats.sw_err_cnt++; |
| 495 | netdev_err(ndev, "hnae reserve buffer map failed.\n"); |
| 496 | break; |
| 497 | } |
| 498 | hnae_replace_buffer(ring, ring->next_to_use, &res_cbs); |
| 499 | } |
| 500 | |
| 501 | ring_ptr_move_fw(ring, next_to_use); |
| 502 | } |
| 503 | |
| 504 | wmb(); /* make all data has been write before submit */ |
| 505 | writel_relaxed(i, ring->io_base + RCB_REG_HEAD); |
| 506 | } |
| 507 | |
| 508 | /* return error number for error or number of desc left to take |
| 509 | */ |
| 510 | static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data, |
| 511 | struct sk_buff *skb) |
| 512 | { |
| 513 | struct net_device *ndev = ring_data->napi.dev; |
| 514 | |
| 515 | skb->protocol = eth_type_trans(skb, ndev); |
| 516 | (void)napi_gro_receive(&ring_data->napi, skb); |
| 517 | ndev->last_rx = jiffies; |
| 518 | } |
| 519 | |
| 520 | static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data, |
| 521 | int budget, void *v) |
| 522 | { |
| 523 | struct hnae_ring *ring = ring_data->ring; |
| 524 | struct sk_buff *skb; |
| 525 | int num, bnum, ex_num; |
| 526 | #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16 |
| 527 | int recv_pkts, recv_bds, clean_count, err; |
| 528 | |
| 529 | num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); |
| 530 | rmb(); /* make sure num taken effect before the other data is touched */ |
| 531 | |
| 532 | recv_pkts = 0, recv_bds = 0, clean_count = 0; |
| 533 | recv: |
| 534 | while (recv_pkts < budget && recv_bds < num) { |
| 535 | /* reuse or realloc buffers*/ |
| 536 | if (clean_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) { |
| 537 | hns_nic_alloc_rx_buffers(ring_data, clean_count); |
| 538 | clean_count = 0; |
| 539 | } |
| 540 | |
| 541 | /* poll one pkg*/ |
| 542 | err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum); |
| 543 | if (unlikely(!skb)) /* this fault cannot be repaired */ |
| 544 | break; |
| 545 | |
| 546 | recv_bds += bnum; |
| 547 | clean_count += bnum; |
| 548 | if (unlikely(err)) { /* do jump the err */ |
| 549 | recv_pkts++; |
| 550 | continue; |
| 551 | } |
| 552 | |
| 553 | /* do update ip stack process*/ |
| 554 | ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)( |
| 555 | ring_data, skb); |
| 556 | recv_pkts++; |
| 557 | } |
| 558 | |
| 559 | /* make all data has been write before submit */ |
| 560 | if (clean_count > 0) { |
| 561 | hns_nic_alloc_rx_buffers(ring_data, clean_count); |
| 562 | clean_count = 0; |
| 563 | } |
| 564 | |
| 565 | if (recv_pkts < budget) { |
| 566 | ex_num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); |
| 567 | rmb(); /*complete read rx ring bd number*/ |
| 568 | if (ex_num > 0) { |
| 569 | num += ex_num; |
| 570 | goto recv; |
| 571 | } |
| 572 | } |
| 573 | |
| 574 | return recv_pkts; |
| 575 | } |
| 576 | |
| 577 | static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data) |
| 578 | { |
| 579 | struct hnae_ring *ring = ring_data->ring; |
| 580 | int num = 0; |
| 581 | |
| 582 | /* for hardware bug fixed */ |
| 583 | num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); |
| 584 | |
| 585 | if (num > 0) { |
| 586 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( |
| 587 | ring_data->ring, 1); |
| 588 | |
| 589 | napi_schedule(&ring_data->napi); |
| 590 | } |
| 591 | } |
| 592 | |
| 593 | static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring, |
| 594 | int *bytes, int *pkts) |
| 595 | { |
| 596 | struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean]; |
| 597 | |
| 598 | (*pkts) += (desc_cb->type == DESC_TYPE_SKB); |
| 599 | (*bytes) += desc_cb->length; |
| 600 | /* desc_cb will be cleaned, after hnae_free_buffer_detach*/ |
| 601 | hnae_free_buffer_detach(ring, ring->next_to_clean); |
| 602 | |
| 603 | ring_ptr_move_fw(ring, next_to_clean); |
| 604 | } |
| 605 | |
| 606 | static int is_valid_clean_head(struct hnae_ring *ring, int h) |
| 607 | { |
| 608 | int u = ring->next_to_use; |
| 609 | int c = ring->next_to_clean; |
| 610 | |
| 611 | if (unlikely(h > ring->desc_num)) |
| 612 | return 0; |
| 613 | |
| 614 | assert(u > 0 && u < ring->desc_num); |
| 615 | assert(c > 0 && c < ring->desc_num); |
| 616 | assert(u != c && h != c); /* must be checked before call this func */ |
| 617 | |
| 618 | return u > c ? (h > c && h <= u) : (h > c || h <= u); |
| 619 | } |
| 620 | |
| 621 | /* netif_tx_lock will turn down the performance, set only when necessary */ |
| 622 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 623 | #define NETIF_TX_LOCK(ndev) netif_tx_lock(ndev) |
| 624 | #define NETIF_TX_UNLOCK(ndev) netif_tx_unlock(ndev) |
| 625 | #else |
| 626 | #define NETIF_TX_LOCK(ndev) |
| 627 | #define NETIF_TX_UNLOCK(ndev) |
| 628 | #endif |
| 629 | /* reclaim all desc in one budget |
| 630 | * return error or number of desc left |
| 631 | */ |
| 632 | static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data, |
| 633 | int budget, void *v) |
| 634 | { |
| 635 | struct hnae_ring *ring = ring_data->ring; |
| 636 | struct net_device *ndev = ring_data->napi.dev; |
| 637 | struct netdev_queue *dev_queue; |
| 638 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 639 | int head; |
| 640 | int bytes, pkts; |
| 641 | |
| 642 | NETIF_TX_LOCK(ndev); |
| 643 | |
| 644 | head = readl_relaxed(ring->io_base + RCB_REG_HEAD); |
| 645 | rmb(); /* make sure head is ready before touch any data */ |
| 646 | |
| 647 | if (is_ring_empty(ring) || head == ring->next_to_clean) { |
| 648 | NETIF_TX_UNLOCK(ndev); |
| 649 | return 0; /* no data to poll */ |
| 650 | } |
| 651 | |
| 652 | if (!is_valid_clean_head(ring, head)) { |
| 653 | netdev_err(ndev, "wrong head (%d, %d-%d)\n", head, |
| 654 | ring->next_to_use, ring->next_to_clean); |
| 655 | ring->stats.io_err_cnt++; |
| 656 | NETIF_TX_UNLOCK(ndev); |
| 657 | return -EIO; |
| 658 | } |
| 659 | |
| 660 | bytes = 0; |
| 661 | pkts = 0; |
| 662 | while (head != ring->next_to_clean) |
| 663 | hns_nic_reclaim_one_desc(ring, &bytes, &pkts); |
| 664 | |
| 665 | NETIF_TX_UNLOCK(ndev); |
| 666 | |
| 667 | dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index); |
| 668 | netdev_tx_completed_queue(dev_queue, pkts, bytes); |
| 669 | |
| 670 | if (unlikely(pkts && netif_carrier_ok(ndev) && |
| 671 | (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) { |
| 672 | /* Make sure that anybody stopping the queue after this |
| 673 | * sees the new next_to_clean. |
| 674 | */ |
| 675 | smp_mb(); |
| 676 | if (netif_tx_queue_stopped(dev_queue) && |
| 677 | !test_bit(NIC_STATE_DOWN, &priv->state)) { |
| 678 | netif_tx_wake_queue(dev_queue); |
| 679 | ring->stats.restart_queue++; |
| 680 | } |
| 681 | } |
| 682 | return 0; |
| 683 | } |
| 684 | |
| 685 | static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data) |
| 686 | { |
| 687 | struct hnae_ring *ring = ring_data->ring; |
| 688 | int head = ring->next_to_clean; |
| 689 | |
| 690 | /* for hardware bug fixed */ |
| 691 | head = readl_relaxed(ring->io_base + RCB_REG_HEAD); |
| 692 | |
| 693 | if (head != ring->next_to_clean) { |
| 694 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( |
| 695 | ring_data->ring, 1); |
| 696 | |
| 697 | napi_schedule(&ring_data->napi); |
| 698 | } |
| 699 | } |
| 700 | |
| 701 | static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data) |
| 702 | { |
| 703 | struct hnae_ring *ring = ring_data->ring; |
| 704 | struct net_device *ndev = ring_data->napi.dev; |
| 705 | struct netdev_queue *dev_queue; |
| 706 | int head; |
| 707 | int bytes, pkts; |
| 708 | |
| 709 | NETIF_TX_LOCK(ndev); |
| 710 | |
| 711 | head = ring->next_to_use; /* ntu :soft setted ring position*/ |
| 712 | bytes = 0; |
| 713 | pkts = 0; |
| 714 | while (head != ring->next_to_clean) |
| 715 | hns_nic_reclaim_one_desc(ring, &bytes, &pkts); |
| 716 | |
| 717 | NETIF_TX_UNLOCK(ndev); |
| 718 | |
| 719 | dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index); |
| 720 | netdev_tx_reset_queue(dev_queue); |
| 721 | } |
| 722 | |
| 723 | static int hns_nic_common_poll(struct napi_struct *napi, int budget) |
| 724 | { |
| 725 | struct hns_nic_ring_data *ring_data = |
| 726 | container_of(napi, struct hns_nic_ring_data, napi); |
| 727 | int clean_complete = ring_data->poll_one( |
| 728 | ring_data, budget, ring_data->ex_process); |
| 729 | |
| 730 | if (clean_complete >= 0 && clean_complete < budget) { |
| 731 | napi_complete(napi); |
| 732 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( |
| 733 | ring_data->ring, 0); |
| 734 | |
| 735 | ring_data->fini_process(ring_data); |
| 736 | } |
| 737 | |
| 738 | return clean_complete; |
| 739 | } |
| 740 | |
| 741 | static irqreturn_t hns_irq_handle(int irq, void *dev) |
| 742 | { |
| 743 | struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev; |
| 744 | |
| 745 | ring_data->ring->q->handle->dev->ops->toggle_ring_irq( |
| 746 | ring_data->ring, 1); |
| 747 | napi_schedule(&ring_data->napi); |
| 748 | |
| 749 | return IRQ_HANDLED; |
| 750 | } |
| 751 | |
| 752 | /** |
| 753 | *hns_nic_adjust_link - adjust net work mode by the phy stat or new param |
| 754 | *@ndev: net device |
| 755 | */ |
| 756 | static void hns_nic_adjust_link(struct net_device *ndev) |
| 757 | { |
| 758 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 759 | struct hnae_handle *h = priv->ae_handle; |
| 760 | |
| 761 | h->dev->ops->adjust_link(h, ndev->phydev->speed, ndev->phydev->duplex); |
| 762 | } |
| 763 | |
| 764 | /** |
| 765 | *hns_nic_init_phy - init phy |
| 766 | *@ndev: net device |
| 767 | *@h: ae handle |
| 768 | * Return 0 on success, negative on failure |
| 769 | */ |
| 770 | int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h) |
| 771 | { |
| 772 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 773 | struct phy_device *phy_dev = NULL; |
| 774 | |
| 775 | if (!h->phy_node) |
| 776 | return 0; |
| 777 | |
| 778 | if (h->phy_if != PHY_INTERFACE_MODE_XGMII) |
| 779 | phy_dev = of_phy_connect(ndev, h->phy_node, |
| 780 | hns_nic_adjust_link, 0, h->phy_if); |
| 781 | else |
| 782 | phy_dev = of_phy_attach(ndev, h->phy_node, 0, h->phy_if); |
| 783 | |
| 784 | if (unlikely(!phy_dev) || IS_ERR(phy_dev)) |
| 785 | return !phy_dev ? -ENODEV : PTR_ERR(phy_dev); |
| 786 | |
| 787 | phy_dev->supported &= h->if_support; |
| 788 | phy_dev->advertising = phy_dev->supported; |
| 789 | |
| 790 | if (h->phy_if == PHY_INTERFACE_MODE_XGMII) |
| 791 | phy_dev->autoneg = false; |
| 792 | |
| 793 | priv->phy = phy_dev; |
| 794 | |
| 795 | return 0; |
| 796 | } |
| 797 | |
| 798 | static int hns_nic_ring_open(struct net_device *netdev, int idx) |
| 799 | { |
| 800 | struct hns_nic_priv *priv = netdev_priv(netdev); |
| 801 | struct hnae_handle *h = priv->ae_handle; |
| 802 | |
| 803 | napi_enable(&priv->ring_data[idx].napi); |
| 804 | |
| 805 | enable_irq(priv->ring_data[idx].ring->irq); |
| 806 | h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0); |
| 807 | |
| 808 | return 0; |
| 809 | } |
| 810 | |
| 811 | static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p) |
| 812 | { |
| 813 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 814 | struct hnae_handle *h = priv->ae_handle; |
| 815 | struct sockaddr *mac_addr = p; |
| 816 | int ret; |
| 817 | |
| 818 | if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data)) |
| 819 | return -EADDRNOTAVAIL; |
| 820 | |
| 821 | ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data); |
| 822 | if (ret) { |
| 823 | netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret); |
| 824 | return ret; |
| 825 | } |
| 826 | |
| 827 | memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len); |
| 828 | |
| 829 | return 0; |
| 830 | } |
| 831 | |
| 832 | void hns_nic_update_stats(struct net_device *netdev) |
| 833 | { |
| 834 | struct hns_nic_priv *priv = netdev_priv(netdev); |
| 835 | struct hnae_handle *h = priv->ae_handle; |
| 836 | |
| 837 | h->dev->ops->update_stats(h, &netdev->stats); |
| 838 | } |
| 839 | |
| 840 | /* set mac addr if it is configed. or leave it to the AE driver */ |
| 841 | static void hns_init_mac_addr(struct net_device *ndev) |
| 842 | { |
| 843 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 844 | struct device_node *node = priv->dev->of_node; |
| 845 | const void *mac_addr_temp; |
| 846 | |
| 847 | mac_addr_temp = of_get_mac_address(node); |
| 848 | if (mac_addr_temp && is_valid_ether_addr(mac_addr_temp)) { |
| 849 | memcpy(ndev->dev_addr, mac_addr_temp, ndev->addr_len); |
| 850 | } else { |
| 851 | eth_hw_addr_random(ndev); |
| 852 | dev_warn(priv->dev, "No valid mac, use random mac %pM", |
| 853 | ndev->dev_addr); |
| 854 | } |
| 855 | } |
| 856 | |
| 857 | static void hns_nic_ring_close(struct net_device *netdev, int idx) |
| 858 | { |
| 859 | struct hns_nic_priv *priv = netdev_priv(netdev); |
| 860 | struct hnae_handle *h = priv->ae_handle; |
| 861 | |
| 862 | h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1); |
| 863 | disable_irq(priv->ring_data[idx].ring->irq); |
| 864 | |
| 865 | napi_disable(&priv->ring_data[idx].napi); |
| 866 | } |
| 867 | |
| 868 | static int hns_nic_init_irq(struct hns_nic_priv *priv) |
| 869 | { |
| 870 | struct hnae_handle *h = priv->ae_handle; |
| 871 | struct hns_nic_ring_data *rd; |
| 872 | int i; |
| 873 | int ret; |
| 874 | int cpu; |
| 875 | cpumask_t mask; |
| 876 | |
| 877 | for (i = 0; i < h->q_num * 2; i++) { |
| 878 | rd = &priv->ring_data[i]; |
| 879 | |
| 880 | if (rd->ring->irq_init_flag == RCB_IRQ_INITED) |
| 881 | break; |
| 882 | |
| 883 | snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN, |
| 884 | "%s-%s%d", priv->netdev->name, |
| 885 | (i < h->q_num ? "tx" : "rx"), rd->queue_index); |
| 886 | |
| 887 | rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0'; |
| 888 | |
| 889 | ret = request_irq(rd->ring->irq, |
| 890 | hns_irq_handle, 0, rd->ring->ring_name, rd); |
| 891 | if (ret) { |
| 892 | netdev_err(priv->netdev, "request irq(%d) fail\n", |
| 893 | rd->ring->irq); |
| 894 | return ret; |
| 895 | } |
| 896 | disable_irq(rd->ring->irq); |
| 897 | rd->ring->irq_init_flag = RCB_IRQ_INITED; |
| 898 | |
| 899 | /*set cpu affinity*/ |
| 900 | if (cpu_online(rd->queue_index)) { |
| 901 | cpumask_clear(&mask); |
| 902 | cpu = rd->queue_index; |
| 903 | cpumask_set_cpu(cpu, &mask); |
| 904 | irq_set_affinity_hint(rd->ring->irq, &mask); |
| 905 | } |
| 906 | } |
| 907 | |
| 908 | return 0; |
| 909 | } |
| 910 | |
| 911 | static int hns_nic_net_up(struct net_device *ndev) |
| 912 | { |
| 913 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 914 | struct hnae_handle *h = priv->ae_handle; |
| 915 | int i, j, k; |
| 916 | int ret; |
| 917 | |
| 918 | ret = hns_nic_init_irq(priv); |
| 919 | if (ret != 0) { |
| 920 | netdev_err(ndev, "hns init irq failed! ret=%d\n", ret); |
| 921 | return ret; |
| 922 | } |
| 923 | |
| 924 | for (i = 0; i < h->q_num * 2; i++) { |
| 925 | ret = hns_nic_ring_open(ndev, i); |
| 926 | if (ret) |
| 927 | goto out_has_some_queues; |
| 928 | } |
| 929 | |
| 930 | for (k = 0; k < h->q_num; k++) |
| 931 | h->dev->ops->toggle_queue_status(h->qs[k], 1); |
| 932 | |
| 933 | ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr); |
| 934 | if (ret) |
| 935 | goto out_set_mac_addr_err; |
| 936 | |
| 937 | ret = h->dev->ops->start ? h->dev->ops->start(h) : 0; |
| 938 | if (ret) |
| 939 | goto out_start_err; |
| 940 | |
| 941 | if (priv->phy) |
| 942 | phy_start(priv->phy); |
| 943 | |
| 944 | clear_bit(NIC_STATE_DOWN, &priv->state); |
| 945 | (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ); |
| 946 | |
| 947 | return 0; |
| 948 | |
| 949 | out_start_err: |
| 950 | netif_stop_queue(ndev); |
| 951 | out_set_mac_addr_err: |
| 952 | for (k = 0; k < h->q_num; k++) |
| 953 | h->dev->ops->toggle_queue_status(h->qs[k], 0); |
| 954 | out_has_some_queues: |
| 955 | for (j = i - 1; j >= 0; j--) |
| 956 | hns_nic_ring_close(ndev, j); |
| 957 | |
| 958 | set_bit(NIC_STATE_DOWN, &priv->state); |
| 959 | |
| 960 | return ret; |
| 961 | } |
| 962 | |
| 963 | static void hns_nic_net_down(struct net_device *ndev) |
| 964 | { |
| 965 | int i; |
| 966 | struct hnae_ae_ops *ops; |
| 967 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 968 | |
| 969 | if (test_and_set_bit(NIC_STATE_DOWN, &priv->state)) |
| 970 | return; |
| 971 | |
| 972 | (void)del_timer_sync(&priv->service_timer); |
| 973 | netif_tx_stop_all_queues(ndev); |
| 974 | netif_carrier_off(ndev); |
| 975 | netif_tx_disable(ndev); |
| 976 | priv->link = 0; |
| 977 | |
| 978 | if (priv->phy) |
| 979 | phy_stop(priv->phy); |
| 980 | |
| 981 | ops = priv->ae_handle->dev->ops; |
| 982 | |
| 983 | if (ops->stop) |
| 984 | ops->stop(priv->ae_handle); |
| 985 | |
| 986 | netif_tx_stop_all_queues(ndev); |
| 987 | |
| 988 | for (i = priv->ae_handle->q_num - 1; i >= 0; i--) { |
| 989 | hns_nic_ring_close(ndev, i); |
| 990 | hns_nic_ring_close(ndev, i + priv->ae_handle->q_num); |
| 991 | |
| 992 | /* clean tx buffers*/ |
| 993 | hns_nic_tx_clr_all_bufs(priv->ring_data + i); |
| 994 | } |
| 995 | } |
| 996 | |
| 997 | void hns_nic_net_reset(struct net_device *ndev) |
| 998 | { |
| 999 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 1000 | struct hnae_handle *handle = priv->ae_handle; |
| 1001 | |
| 1002 | while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state)) |
| 1003 | usleep_range(1000, 2000); |
| 1004 | |
| 1005 | (void)hnae_reinit_handle(handle); |
| 1006 | |
| 1007 | clear_bit(NIC_STATE_RESETTING, &priv->state); |
| 1008 | } |
| 1009 | |
| 1010 | void hns_nic_net_reinit(struct net_device *netdev) |
| 1011 | { |
| 1012 | struct hns_nic_priv *priv = netdev_priv(netdev); |
| 1013 | |
| 1014 | priv->netdev->trans_start = jiffies; |
| 1015 | while (test_and_set_bit(NIC_STATE_REINITING, &priv->state)) |
| 1016 | usleep_range(1000, 2000); |
| 1017 | |
| 1018 | hns_nic_net_down(netdev); |
| 1019 | hns_nic_net_reset(netdev); |
| 1020 | (void)hns_nic_net_up(netdev); |
| 1021 | clear_bit(NIC_STATE_REINITING, &priv->state); |
| 1022 | } |
| 1023 | |
| 1024 | static int hns_nic_net_open(struct net_device *ndev) |
| 1025 | { |
| 1026 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 1027 | struct hnae_handle *h = priv->ae_handle; |
| 1028 | int ret; |
| 1029 | |
| 1030 | if (test_bit(NIC_STATE_TESTING, &priv->state)) |
| 1031 | return -EBUSY; |
| 1032 | |
| 1033 | priv->link = 0; |
| 1034 | netif_carrier_off(ndev); |
| 1035 | |
| 1036 | ret = netif_set_real_num_tx_queues(ndev, h->q_num); |
| 1037 | if (ret < 0) { |
| 1038 | netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n", |
| 1039 | ret); |
| 1040 | return ret; |
| 1041 | } |
| 1042 | |
| 1043 | ret = netif_set_real_num_rx_queues(ndev, h->q_num); |
| 1044 | if (ret < 0) { |
| 1045 | netdev_err(ndev, |
| 1046 | "netif_set_real_num_rx_queues fail, ret=%d!\n", ret); |
| 1047 | return ret; |
| 1048 | } |
| 1049 | |
| 1050 | ret = hns_nic_net_up(ndev); |
| 1051 | if (ret) { |
| 1052 | netdev_err(ndev, |
| 1053 | "hns net up fail, ret=%d!\n", ret); |
| 1054 | return ret; |
| 1055 | } |
| 1056 | |
| 1057 | return 0; |
| 1058 | } |
| 1059 | |
| 1060 | static int hns_nic_net_stop(struct net_device *ndev) |
| 1061 | { |
| 1062 | hns_nic_net_down(ndev); |
| 1063 | |
| 1064 | return 0; |
| 1065 | } |
| 1066 | |
| 1067 | static void hns_tx_timeout_reset(struct hns_nic_priv *priv); |
| 1068 | static void hns_nic_net_timeout(struct net_device *ndev) |
| 1069 | { |
| 1070 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 1071 | |
| 1072 | hns_tx_timeout_reset(priv); |
| 1073 | } |
| 1074 | |
| 1075 | static int hns_nic_do_ioctl(struct net_device *netdev, struct ifreq *ifr, |
| 1076 | int cmd) |
| 1077 | { |
| 1078 | struct hns_nic_priv *priv = netdev_priv(netdev); |
| 1079 | struct phy_device *phy_dev = priv->phy; |
| 1080 | |
| 1081 | if (!netif_running(netdev)) |
| 1082 | return -EINVAL; |
| 1083 | |
| 1084 | if (!phy_dev) |
| 1085 | return -ENOTSUPP; |
| 1086 | |
| 1087 | return phy_mii_ioctl(phy_dev, ifr, cmd); |
| 1088 | } |
| 1089 | |
| 1090 | /* use only for netconsole to poll with the device without interrupt */ |
| 1091 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1092 | void hns_nic_poll_controller(struct net_device *ndev) |
| 1093 | { |
| 1094 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 1095 | unsigned long flags; |
| 1096 | int i; |
| 1097 | |
| 1098 | local_irq_save(flags); |
| 1099 | for (i = 0; i < priv->ae_handle->q_num * 2; i++) |
| 1100 | napi_schedule(&priv->ring_data[i].napi); |
| 1101 | local_irq_restore(flags); |
| 1102 | } |
| 1103 | #endif |
| 1104 | |
| 1105 | static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb, |
| 1106 | struct net_device *ndev) |
| 1107 | { |
| 1108 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 1109 | int ret; |
| 1110 | |
| 1111 | assert(skb->queue_mapping < ndev->ae_handle->q_num); |
| 1112 | ret = hns_nic_net_xmit_hw(ndev, skb, |
| 1113 | &tx_ring_data(priv, skb->queue_mapping)); |
| 1114 | if (ret == NETDEV_TX_OK) { |
| 1115 | ndev->trans_start = jiffies; |
| 1116 | ndev->stats.tx_bytes += skb->len; |
| 1117 | ndev->stats.tx_packets++; |
| 1118 | } |
| 1119 | return (netdev_tx_t)ret; |
| 1120 | } |
| 1121 | |
| 1122 | static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu) |
| 1123 | { |
| 1124 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 1125 | struct hnae_handle *h = priv->ae_handle; |
| 1126 | int ret; |
| 1127 | |
| 1128 | /* MTU < 68 is an error and causes problems on some kernels */ |
| 1129 | if (new_mtu < 68) |
| 1130 | return -EINVAL; |
| 1131 | |
| 1132 | if (!h->dev->ops->set_mtu) |
| 1133 | return -ENOTSUPP; |
| 1134 | |
| 1135 | if (netif_running(ndev)) { |
| 1136 | (void)hns_nic_net_stop(ndev); |
| 1137 | msleep(100); |
| 1138 | |
| 1139 | ret = h->dev->ops->set_mtu(h, new_mtu); |
| 1140 | if (ret) |
| 1141 | netdev_err(ndev, "set mtu fail, return value %d\n", |
| 1142 | ret); |
| 1143 | |
| 1144 | if (hns_nic_net_open(ndev)) |
| 1145 | netdev_err(ndev, "hns net open fail\n"); |
| 1146 | } else { |
| 1147 | ret = h->dev->ops->set_mtu(h, new_mtu); |
| 1148 | } |
| 1149 | |
| 1150 | if (!ret) |
| 1151 | ndev->mtu = new_mtu; |
| 1152 | |
| 1153 | return ret; |
| 1154 | } |
| 1155 | |
| 1156 | /** |
| 1157 | * nic_set_multicast_list - set mutl mac address |
| 1158 | * @netdev: net device |
| 1159 | * @p: mac address |
| 1160 | * |
| 1161 | * return void |
| 1162 | */ |
| 1163 | void hns_set_multicast_list(struct net_device *ndev) |
| 1164 | { |
| 1165 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 1166 | struct hnae_handle *h = priv->ae_handle; |
| 1167 | struct netdev_hw_addr *ha = NULL; |
| 1168 | |
| 1169 | if (!h) { |
| 1170 | netdev_err(ndev, "hnae handle is null\n"); |
| 1171 | return; |
| 1172 | } |
| 1173 | |
| 1174 | if (h->dev->ops->set_mc_addr) { |
| 1175 | netdev_for_each_mc_addr(ha, ndev) |
| 1176 | if (h->dev->ops->set_mc_addr(h, ha->addr)) |
| 1177 | netdev_err(ndev, "set multicast fail\n"); |
| 1178 | } |
| 1179 | } |
| 1180 | |
| 1181 | struct rtnl_link_stats64 *hns_nic_get_stats64(struct net_device *ndev, |
| 1182 | struct rtnl_link_stats64 *stats) |
| 1183 | { |
| 1184 | int idx = 0; |
| 1185 | u64 tx_bytes = 0; |
| 1186 | u64 rx_bytes = 0; |
| 1187 | u64 tx_pkts = 0; |
| 1188 | u64 rx_pkts = 0; |
| 1189 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 1190 | struct hnae_handle *h = priv->ae_handle; |
| 1191 | |
| 1192 | for (idx = 0; idx < h->q_num; idx++) { |
| 1193 | tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes; |
| 1194 | tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts; |
| 1195 | rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes; |
| 1196 | rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts; |
| 1197 | } |
| 1198 | |
| 1199 | stats->tx_bytes = tx_bytes; |
| 1200 | stats->tx_packets = tx_pkts; |
| 1201 | stats->rx_bytes = rx_bytes; |
| 1202 | stats->rx_packets = rx_pkts; |
| 1203 | |
| 1204 | stats->rx_errors = ndev->stats.rx_errors; |
| 1205 | stats->multicast = ndev->stats.multicast; |
| 1206 | stats->rx_length_errors = ndev->stats.rx_length_errors; |
| 1207 | stats->rx_crc_errors = ndev->stats.rx_crc_errors; |
| 1208 | stats->rx_missed_errors = ndev->stats.rx_missed_errors; |
| 1209 | |
| 1210 | stats->tx_errors = ndev->stats.tx_errors; |
| 1211 | stats->rx_dropped = ndev->stats.rx_dropped; |
| 1212 | stats->tx_dropped = ndev->stats.tx_dropped; |
| 1213 | stats->collisions = ndev->stats.collisions; |
| 1214 | stats->rx_over_errors = ndev->stats.rx_over_errors; |
| 1215 | stats->rx_frame_errors = ndev->stats.rx_frame_errors; |
| 1216 | stats->rx_fifo_errors = ndev->stats.rx_fifo_errors; |
| 1217 | stats->tx_aborted_errors = ndev->stats.tx_aborted_errors; |
| 1218 | stats->tx_carrier_errors = ndev->stats.tx_carrier_errors; |
| 1219 | stats->tx_fifo_errors = ndev->stats.tx_fifo_errors; |
| 1220 | stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors; |
| 1221 | stats->tx_window_errors = ndev->stats.tx_window_errors; |
| 1222 | stats->rx_compressed = ndev->stats.rx_compressed; |
| 1223 | stats->tx_compressed = ndev->stats.tx_compressed; |
| 1224 | |
| 1225 | return stats; |
| 1226 | } |
| 1227 | |
| 1228 | static const struct net_device_ops hns_nic_netdev_ops = { |
| 1229 | .ndo_open = hns_nic_net_open, |
| 1230 | .ndo_stop = hns_nic_net_stop, |
| 1231 | .ndo_start_xmit = hns_nic_net_xmit, |
| 1232 | .ndo_tx_timeout = hns_nic_net_timeout, |
| 1233 | .ndo_set_mac_address = hns_nic_net_set_mac_address, |
| 1234 | .ndo_change_mtu = hns_nic_change_mtu, |
| 1235 | .ndo_do_ioctl = hns_nic_do_ioctl, |
| 1236 | .ndo_get_stats64 = hns_nic_get_stats64, |
| 1237 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1238 | .ndo_poll_controller = hns_nic_poll_controller, |
| 1239 | #endif |
| 1240 | .ndo_set_rx_mode = hns_set_multicast_list, |
| 1241 | }; |
| 1242 | |
| 1243 | static void hns_nic_update_link_status(struct net_device *netdev) |
| 1244 | { |
| 1245 | struct hns_nic_priv *priv = netdev_priv(netdev); |
| 1246 | |
| 1247 | struct hnae_handle *h = priv->ae_handle; |
| 1248 | int state = 1; |
| 1249 | |
| 1250 | if (priv->phy) { |
| 1251 | if (!genphy_update_link(priv->phy)) |
| 1252 | state = priv->phy->link; |
| 1253 | else |
| 1254 | state = 0; |
| 1255 | } |
| 1256 | state = state && h->dev->ops->get_status(h); |
| 1257 | |
| 1258 | if (state != priv->link) { |
| 1259 | if (state) { |
| 1260 | netif_carrier_on(netdev); |
| 1261 | netif_tx_wake_all_queues(netdev); |
| 1262 | netdev_info(netdev, "link up\n"); |
| 1263 | } else { |
| 1264 | netif_carrier_off(netdev); |
| 1265 | netdev_info(netdev, "link down\n"); |
| 1266 | } |
| 1267 | priv->link = state; |
| 1268 | } |
| 1269 | } |
| 1270 | |
| 1271 | /* for dumping key regs*/ |
| 1272 | static void hns_nic_dump(struct hns_nic_priv *priv) |
| 1273 | { |
| 1274 | struct hnae_handle *h = priv->ae_handle; |
| 1275 | struct hnae_ae_ops *ops = h->dev->ops; |
| 1276 | u32 *data, reg_num, i; |
| 1277 | |
| 1278 | if (ops->get_regs_len && ops->get_regs) { |
| 1279 | reg_num = ops->get_regs_len(priv->ae_handle); |
| 1280 | reg_num = (reg_num + 3ul) & ~3ul; |
| 1281 | data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL); |
| 1282 | if (data) { |
| 1283 | ops->get_regs(priv->ae_handle, data); |
| 1284 | for (i = 0; i < reg_num; i += 4) |
| 1285 | pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n", |
| 1286 | i, data[i], data[i + 1], |
| 1287 | data[i + 2], data[i + 3]); |
| 1288 | kfree(data); |
| 1289 | } |
| 1290 | } |
| 1291 | |
| 1292 | for (i = 0; i < h->q_num; i++) { |
| 1293 | pr_info("tx_queue%d_next_to_clean:%d\n", |
| 1294 | i, h->qs[i]->tx_ring.next_to_clean); |
| 1295 | pr_info("tx_queue%d_next_to_use:%d\n", |
| 1296 | i, h->qs[i]->tx_ring.next_to_use); |
| 1297 | pr_info("rx_queue%d_next_to_clean:%d\n", |
| 1298 | i, h->qs[i]->rx_ring.next_to_clean); |
| 1299 | pr_info("rx_queue%d_next_to_use:%d\n", |
| 1300 | i, h->qs[i]->rx_ring.next_to_use); |
| 1301 | } |
| 1302 | } |
| 1303 | |
| 1304 | /* for resetting suntask*/ |
| 1305 | static void hns_nic_reset_subtask(struct hns_nic_priv *priv) |
| 1306 | { |
| 1307 | enum hnae_port_type type = priv->ae_handle->port_type; |
| 1308 | |
| 1309 | if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state)) |
| 1310 | return; |
| 1311 | clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state); |
| 1312 | |
| 1313 | /* If we're already down, removing or resetting, just bail */ |
| 1314 | if (test_bit(NIC_STATE_DOWN, &priv->state) || |
| 1315 | test_bit(NIC_STATE_REMOVING, &priv->state) || |
| 1316 | test_bit(NIC_STATE_RESETTING, &priv->state)) |
| 1317 | return; |
| 1318 | |
| 1319 | hns_nic_dump(priv); |
| 1320 | netdev_err(priv->netdev, "Reset %s port\n", |
| 1321 | (type == HNAE_PORT_DEBUG ? "debug" : "business")); |
| 1322 | |
| 1323 | rtnl_lock(); |
| 1324 | if (type == HNAE_PORT_DEBUG) { |
| 1325 | hns_nic_net_reinit(priv->netdev); |
| 1326 | } else { |
| 1327 | hns_nic_net_down(priv->netdev); |
| 1328 | hns_nic_net_reset(priv->netdev); |
| 1329 | } |
| 1330 | rtnl_unlock(); |
| 1331 | } |
| 1332 | |
| 1333 | /* for doing service complete*/ |
| 1334 | static void hns_nic_service_event_complete(struct hns_nic_priv *priv) |
| 1335 | { |
| 1336 | assert(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state)); |
| 1337 | |
| 1338 | smp_mb__before_atomic(); |
| 1339 | clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state); |
| 1340 | } |
| 1341 | |
| 1342 | static void hns_nic_service_task(struct work_struct *work) |
| 1343 | { |
| 1344 | struct hns_nic_priv *priv |
| 1345 | = container_of(work, struct hns_nic_priv, service_task); |
| 1346 | struct hnae_handle *h = priv->ae_handle; |
| 1347 | |
| 1348 | hns_nic_update_link_status(priv->netdev); |
| 1349 | h->dev->ops->update_led_status(h); |
| 1350 | hns_nic_update_stats(priv->netdev); |
| 1351 | |
| 1352 | hns_nic_reset_subtask(priv); |
| 1353 | hns_nic_service_event_complete(priv); |
| 1354 | } |
| 1355 | |
| 1356 | static void hns_nic_task_schedule(struct hns_nic_priv *priv) |
| 1357 | { |
| 1358 | if (!test_bit(NIC_STATE_DOWN, &priv->state) && |
| 1359 | !test_bit(NIC_STATE_REMOVING, &priv->state) && |
| 1360 | !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state)) |
| 1361 | (void)schedule_work(&priv->service_task); |
| 1362 | } |
| 1363 | |
| 1364 | static void hns_nic_service_timer(unsigned long data) |
| 1365 | { |
| 1366 | struct hns_nic_priv *priv = (struct hns_nic_priv *)data; |
| 1367 | |
| 1368 | (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ); |
| 1369 | |
| 1370 | hns_nic_task_schedule(priv); |
| 1371 | } |
| 1372 | |
| 1373 | /** |
| 1374 | * hns_tx_timeout_reset - initiate reset due to Tx timeout |
| 1375 | * @priv: driver private struct |
| 1376 | **/ |
| 1377 | static void hns_tx_timeout_reset(struct hns_nic_priv *priv) |
| 1378 | { |
| 1379 | /* Do the reset outside of interrupt context */ |
| 1380 | if (!test_bit(NIC_STATE_DOWN, &priv->state)) { |
| 1381 | set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state); |
| 1382 | netdev_warn(priv->netdev, |
| 1383 | "initiating reset due to tx timeout(%llu,0x%lx)\n", |
| 1384 | priv->tx_timeout_count, priv->state); |
| 1385 | priv->tx_timeout_count++; |
| 1386 | hns_nic_task_schedule(priv); |
| 1387 | } |
| 1388 | } |
| 1389 | |
| 1390 | static int hns_nic_init_ring_data(struct hns_nic_priv *priv) |
| 1391 | { |
| 1392 | struct hnae_handle *h = priv->ae_handle; |
| 1393 | struct hns_nic_ring_data *rd; |
| 1394 | int i; |
| 1395 | |
| 1396 | if (h->q_num > NIC_MAX_Q_PER_VF) { |
| 1397 | netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num); |
| 1398 | return -EINVAL; |
| 1399 | } |
| 1400 | |
| 1401 | priv->ring_data = kzalloc(h->q_num * sizeof(*priv->ring_data) * 2, |
| 1402 | GFP_KERNEL); |
| 1403 | if (!priv->ring_data) |
| 1404 | return -ENOMEM; |
| 1405 | |
| 1406 | for (i = 0; i < h->q_num; i++) { |
| 1407 | rd = &priv->ring_data[i]; |
| 1408 | rd->queue_index = i; |
| 1409 | rd->ring = &h->qs[i]->tx_ring; |
| 1410 | rd->poll_one = hns_nic_tx_poll_one; |
| 1411 | rd->fini_process = hns_nic_tx_fini_pro; |
| 1412 | |
| 1413 | netif_napi_add(priv->netdev, &rd->napi, |
| 1414 | hns_nic_common_poll, NIC_TX_CLEAN_MAX_NUM); |
| 1415 | rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED; |
| 1416 | } |
| 1417 | for (i = h->q_num; i < h->q_num * 2; i++) { |
| 1418 | rd = &priv->ring_data[i]; |
| 1419 | rd->queue_index = i - h->q_num; |
| 1420 | rd->ring = &h->qs[i - h->q_num]->rx_ring; |
| 1421 | rd->poll_one = hns_nic_rx_poll_one; |
| 1422 | rd->ex_process = hns_nic_rx_up_pro; |
| 1423 | rd->fini_process = hns_nic_rx_fini_pro; |
| 1424 | |
| 1425 | netif_napi_add(priv->netdev, &rd->napi, |
| 1426 | hns_nic_common_poll, NIC_RX_CLEAN_MAX_NUM); |
| 1427 | rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED; |
| 1428 | } |
| 1429 | |
| 1430 | return 0; |
| 1431 | } |
| 1432 | |
| 1433 | static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv) |
| 1434 | { |
| 1435 | struct hnae_handle *h = priv->ae_handle; |
| 1436 | int i; |
| 1437 | |
| 1438 | for (i = 0; i < h->q_num * 2; i++) { |
| 1439 | netif_napi_del(&priv->ring_data[i].napi); |
| 1440 | if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) { |
| 1441 | irq_set_affinity_hint(priv->ring_data[i].ring->irq, |
| 1442 | NULL); |
| 1443 | free_irq(priv->ring_data[i].ring->irq, |
| 1444 | &priv->ring_data[i]); |
| 1445 | } |
| 1446 | |
| 1447 | priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED; |
| 1448 | } |
| 1449 | kfree(priv->ring_data); |
| 1450 | } |
| 1451 | |
| 1452 | static int hns_nic_try_get_ae(struct net_device *ndev) |
| 1453 | { |
| 1454 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 1455 | struct hnae_handle *h; |
| 1456 | int ret; |
| 1457 | |
| 1458 | h = hnae_get_handle(&priv->netdev->dev, |
| 1459 | priv->ae_name, priv->port_id, NULL); |
| 1460 | if (IS_ERR_OR_NULL(h)) { |
| 1461 | ret = PTR_ERR(h); |
| 1462 | dev_dbg(priv->dev, "has not handle, register notifier!\n"); |
| 1463 | goto out; |
| 1464 | } |
| 1465 | priv->ae_handle = h; |
| 1466 | |
| 1467 | ret = hns_nic_init_phy(ndev, h); |
| 1468 | if (ret) { |
| 1469 | dev_err(priv->dev, "probe phy device fail!\n"); |
| 1470 | goto out_init_phy; |
| 1471 | } |
| 1472 | |
| 1473 | ret = hns_nic_init_ring_data(priv); |
| 1474 | if (ret) { |
| 1475 | ret = -ENOMEM; |
| 1476 | goto out_init_ring_data; |
| 1477 | } |
| 1478 | |
| 1479 | ret = register_netdev(ndev); |
| 1480 | if (ret) { |
| 1481 | dev_err(priv->dev, "probe register netdev fail!\n"); |
| 1482 | goto out_reg_ndev_fail; |
| 1483 | } |
| 1484 | return 0; |
| 1485 | |
| 1486 | out_reg_ndev_fail: |
| 1487 | hns_nic_uninit_ring_data(priv); |
| 1488 | priv->ring_data = NULL; |
| 1489 | out_init_phy: |
| 1490 | out_init_ring_data: |
| 1491 | hnae_put_handle(priv->ae_handle); |
| 1492 | priv->ae_handle = NULL; |
| 1493 | out: |
| 1494 | return ret; |
| 1495 | } |
| 1496 | |
| 1497 | static int hns_nic_notifier_action(struct notifier_block *nb, |
| 1498 | unsigned long action, void *data) |
| 1499 | { |
| 1500 | struct hns_nic_priv *priv = |
| 1501 | container_of(nb, struct hns_nic_priv, notifier_block); |
| 1502 | |
| 1503 | assert(action == HNAE_AE_REGISTER); |
| 1504 | |
| 1505 | if (!hns_nic_try_get_ae(priv->netdev)) { |
| 1506 | hnae_unregister_notifier(&priv->notifier_block); |
| 1507 | priv->notifier_block.notifier_call = NULL; |
| 1508 | } |
| 1509 | return 0; |
| 1510 | } |
| 1511 | |
| 1512 | static int hns_nic_dev_probe(struct platform_device *pdev) |
| 1513 | { |
| 1514 | struct device *dev = &pdev->dev; |
| 1515 | struct net_device *ndev; |
| 1516 | struct hns_nic_priv *priv; |
| 1517 | struct device_node *node = dev->of_node; |
| 1518 | int ret; |
| 1519 | |
| 1520 | ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF); |
| 1521 | if (!ndev) |
| 1522 | return -ENOMEM; |
| 1523 | |
| 1524 | platform_set_drvdata(pdev, ndev); |
| 1525 | |
| 1526 | priv = netdev_priv(ndev); |
| 1527 | priv->dev = dev; |
| 1528 | priv->netdev = ndev; |
| 1529 | |
| 1530 | if (of_device_is_compatible(node, "hisilicon,hns-nic-v2")) |
| 1531 | priv->enet_ver = AE_VERSION_2; |
| 1532 | else |
| 1533 | priv->enet_ver = AE_VERSION_1; |
| 1534 | |
| 1535 | ret = of_property_read_string(node, "ae-name", &priv->ae_name); |
| 1536 | if (ret) |
| 1537 | goto out_read_string_fail; |
| 1538 | |
| 1539 | ret = of_property_read_u32(node, "port-id", &priv->port_id); |
| 1540 | if (ret) |
| 1541 | goto out_read_string_fail; |
| 1542 | |
| 1543 | hns_init_mac_addr(ndev); |
| 1544 | |
| 1545 | ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT; |
| 1546 | ndev->priv_flags |= IFF_UNICAST_FLT; |
| 1547 | ndev->netdev_ops = &hns_nic_netdev_ops; |
| 1548 | hns_ethtool_set_ops(ndev); |
| 1549 | ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
| 1550 | NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | |
| 1551 | NETIF_F_GRO; |
| 1552 | ndev->vlan_features |= |
| 1553 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM; |
| 1554 | ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO; |
| 1555 | |
| 1556 | SET_NETDEV_DEV(ndev, dev); |
| 1557 | |
| 1558 | if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64))) |
| 1559 | dev_dbg(dev, "set mask to 64bit\n"); |
| 1560 | else |
| 1561 | dev_err(dev, "set mask to 32bit fail!\n"); |
| 1562 | |
| 1563 | /* carrier off reporting is important to ethtool even BEFORE open */ |
| 1564 | netif_carrier_off(ndev); |
| 1565 | |
| 1566 | setup_timer(&priv->service_timer, hns_nic_service_timer, |
| 1567 | (unsigned long)priv); |
| 1568 | INIT_WORK(&priv->service_task, hns_nic_service_task); |
| 1569 | |
| 1570 | set_bit(NIC_STATE_SERVICE_INITED, &priv->state); |
| 1571 | clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state); |
| 1572 | set_bit(NIC_STATE_DOWN, &priv->state); |
| 1573 | |
| 1574 | if (hns_nic_try_get_ae(priv->netdev)) { |
| 1575 | priv->notifier_block.notifier_call = hns_nic_notifier_action; |
| 1576 | ret = hnae_register_notifier(&priv->notifier_block); |
| 1577 | if (ret) { |
| 1578 | dev_err(dev, "register notifier fail!\n"); |
| 1579 | goto out_notify_fail; |
| 1580 | } |
| 1581 | dev_dbg(dev, "has not handle, register notifier!\n"); |
| 1582 | } |
| 1583 | |
| 1584 | return 0; |
| 1585 | |
| 1586 | out_notify_fail: |
| 1587 | (void)cancel_work_sync(&priv->service_task); |
| 1588 | out_read_string_fail: |
| 1589 | free_netdev(ndev); |
| 1590 | return ret; |
| 1591 | } |
| 1592 | |
| 1593 | static int hns_nic_dev_remove(struct platform_device *pdev) |
| 1594 | { |
| 1595 | struct net_device *ndev = platform_get_drvdata(pdev); |
| 1596 | struct hns_nic_priv *priv = netdev_priv(ndev); |
| 1597 | |
| 1598 | if (ndev->reg_state != NETREG_UNINITIALIZED) |
| 1599 | unregister_netdev(ndev); |
| 1600 | |
| 1601 | if (priv->ring_data) |
| 1602 | hns_nic_uninit_ring_data(priv); |
| 1603 | priv->ring_data = NULL; |
| 1604 | |
| 1605 | if (priv->phy) |
| 1606 | phy_disconnect(priv->phy); |
| 1607 | priv->phy = NULL; |
| 1608 | |
| 1609 | if (!IS_ERR_OR_NULL(priv->ae_handle)) |
| 1610 | hnae_put_handle(priv->ae_handle); |
| 1611 | priv->ae_handle = NULL; |
| 1612 | if (priv->notifier_block.notifier_call) |
| 1613 | hnae_unregister_notifier(&priv->notifier_block); |
| 1614 | priv->notifier_block.notifier_call = NULL; |
| 1615 | |
| 1616 | set_bit(NIC_STATE_REMOVING, &priv->state); |
| 1617 | (void)cancel_work_sync(&priv->service_task); |
| 1618 | |
| 1619 | free_netdev(ndev); |
| 1620 | return 0; |
| 1621 | } |
| 1622 | |
| 1623 | static const struct of_device_id hns_enet_of_match[] = { |
| 1624 | {.compatible = "hisilicon,hns-nic-v1",}, |
| 1625 | {.compatible = "hisilicon,hns-nic-v2",}, |
| 1626 | {}, |
| 1627 | }; |
| 1628 | |
| 1629 | MODULE_DEVICE_TABLE(of, hns_enet_of_match); |
| 1630 | |
| 1631 | static struct platform_driver hns_nic_dev_driver = { |
| 1632 | .driver = { |
| 1633 | .name = "hns-nic", |
| 1634 | .owner = THIS_MODULE, |
| 1635 | .of_match_table = hns_enet_of_match, |
| 1636 | }, |
| 1637 | .probe = hns_nic_dev_probe, |
| 1638 | .remove = hns_nic_dev_remove, |
| 1639 | }; |
| 1640 | |
| 1641 | module_platform_driver(hns_nic_dev_driver); |
| 1642 | |
| 1643 | MODULE_DESCRIPTION("HISILICON HNS Ethernet driver"); |
| 1644 | MODULE_AUTHOR("Hisilicon, Inc."); |
| 1645 | MODULE_LICENSE("GPL"); |
| 1646 | MODULE_ALIAS("platform:hns-nic"); |