| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Copyright (c) 2014-2015 Hisilicon Limited. |
| */ |
| |
| #include <linux/clk.h> |
| #include <linux/cpumask.h> |
| #include <linux/etherdevice.h> |
| #include <linux/if_vlan.h> |
| #include <linux/interrupt.h> |
| #include <linux/io.h> |
| #include <linux/ip.h> |
| #include <linux/ipv6.h> |
| #include <linux/irq.h> |
| #include <linux/module.h> |
| #include <linux/phy.h> |
| #include <linux/platform_device.h> |
| #include <linux/skbuff.h> |
| |
| #include "hnae.h" |
| #include "hns_enet.h" |
| #include "hns_dsaf_mac.h" |
| |
| #define NIC_MAX_Q_PER_VF 16 |
| #define HNS_NIC_TX_TIMEOUT (5 * HZ) |
| |
| #define SERVICE_TIMER_HZ (1 * HZ) |
| |
| #define RCB_IRQ_NOT_INITED 0 |
| #define RCB_IRQ_INITED 1 |
| #define HNS_BUFFER_SIZE_2048 2048 |
| |
| #define BD_MAX_SEND_SIZE 8191 |
| |
| static void fill_v2_desc_hw(struct hnae_ring *ring, void *priv, int size, |
| int send_sz, dma_addr_t dma, int frag_end, |
| int buf_num, enum hns_desc_type type, int mtu) |
| { |
| struct hnae_desc *desc = &ring->desc[ring->next_to_use]; |
| struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; |
| struct iphdr *iphdr; |
| struct ipv6hdr *ipv6hdr; |
| struct sk_buff *skb; |
| __be16 protocol; |
| u8 bn_pid = 0; |
| u8 rrcfv = 0; |
| u8 ip_offset = 0; |
| u8 tvsvsn = 0; |
| u16 mss = 0; |
| u8 l4_len = 0; |
| u16 paylen = 0; |
| |
| desc_cb->priv = priv; |
| desc_cb->length = size; |
| desc_cb->dma = dma; |
| desc_cb->type = type; |
| |
| desc->addr = cpu_to_le64(dma); |
| desc->tx.send_size = cpu_to_le16((u16)send_sz); |
| |
| /* config bd buffer end */ |
| hnae_set_bit(rrcfv, HNSV2_TXD_VLD_B, 1); |
| hnae_set_field(bn_pid, HNSV2_TXD_BUFNUM_M, 0, buf_num - 1); |
| |
| /* fill port_id in the tx bd for sending management pkts */ |
| hnae_set_field(bn_pid, HNSV2_TXD_PORTID_M, |
| HNSV2_TXD_PORTID_S, ring->q->handle->dport_id); |
| |
| if (type == DESC_TYPE_SKB) { |
| skb = (struct sk_buff *)priv; |
| |
| if (skb->ip_summed == CHECKSUM_PARTIAL) { |
| skb_reset_mac_len(skb); |
| protocol = skb->protocol; |
| ip_offset = ETH_HLEN; |
| |
| if (protocol == htons(ETH_P_8021Q)) { |
| ip_offset += VLAN_HLEN; |
| protocol = vlan_get_protocol(skb); |
| skb->protocol = protocol; |
| } |
| |
| if (skb->protocol == htons(ETH_P_IP)) { |
| iphdr = ip_hdr(skb); |
| hnae_set_bit(rrcfv, HNSV2_TXD_L3CS_B, 1); |
| hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1); |
| |
| /* check for tcp/udp header */ |
| if (iphdr->protocol == IPPROTO_TCP && |
| skb_is_gso(skb)) { |
| hnae_set_bit(tvsvsn, |
| HNSV2_TXD_TSE_B, 1); |
| l4_len = tcp_hdrlen(skb); |
| mss = skb_shinfo(skb)->gso_size; |
| paylen = skb->len - skb_tcp_all_headers(skb); |
| } |
| } else if (skb->protocol == htons(ETH_P_IPV6)) { |
| hnae_set_bit(tvsvsn, HNSV2_TXD_IPV6_B, 1); |
| ipv6hdr = ipv6_hdr(skb); |
| hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1); |
| |
| /* check for tcp/udp header */ |
| if (ipv6hdr->nexthdr == IPPROTO_TCP && |
| skb_is_gso(skb) && skb_is_gso_v6(skb)) { |
| hnae_set_bit(tvsvsn, |
| HNSV2_TXD_TSE_B, 1); |
| l4_len = tcp_hdrlen(skb); |
| mss = skb_shinfo(skb)->gso_size; |
| paylen = skb->len - skb_tcp_all_headers(skb); |
| } |
| } |
| desc->tx.ip_offset = ip_offset; |
| desc->tx.tse_vlan_snap_v6_sctp_nth = tvsvsn; |
| desc->tx.mss = cpu_to_le16(mss); |
| desc->tx.l4_len = l4_len; |
| desc->tx.paylen = cpu_to_le16(paylen); |
| } |
| } |
| |
| hnae_set_bit(rrcfv, HNSV2_TXD_FE_B, frag_end); |
| |
| desc->tx.bn_pid = bn_pid; |
| desc->tx.ra_ri_cs_fe_vld = rrcfv; |
| |
| ring_ptr_move_fw(ring, next_to_use); |
| } |
| |
| static void fill_v2_desc(struct hnae_ring *ring, void *priv, |
| int size, dma_addr_t dma, int frag_end, |
| int buf_num, enum hns_desc_type type, int mtu) |
| { |
| fill_v2_desc_hw(ring, priv, size, size, dma, frag_end, |
| buf_num, type, mtu); |
| } |
| |
| static const struct acpi_device_id hns_enet_acpi_match[] = { |
| { "HISI00C1", 0 }, |
| { "HISI00C2", 0 }, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(acpi, hns_enet_acpi_match); |
| |
| static void fill_desc(struct hnae_ring *ring, void *priv, |
| int size, dma_addr_t dma, int frag_end, |
| int buf_num, enum hns_desc_type type, int mtu) |
| { |
| struct hnae_desc *desc = &ring->desc[ring->next_to_use]; |
| struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; |
| struct sk_buff *skb; |
| __be16 protocol; |
| u32 ip_offset; |
| u32 asid_bufnum_pid = 0; |
| u32 flag_ipoffset = 0; |
| |
| desc_cb->priv = priv; |
| desc_cb->length = size; |
| desc_cb->dma = dma; |
| desc_cb->type = type; |
| |
| desc->addr = cpu_to_le64(dma); |
| desc->tx.send_size = cpu_to_le16((u16)size); |
| |
| /*config bd buffer end */ |
| flag_ipoffset |= 1 << HNS_TXD_VLD_B; |
| |
| asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S; |
| |
| if (type == DESC_TYPE_SKB) { |
| skb = (struct sk_buff *)priv; |
| |
| if (skb->ip_summed == CHECKSUM_PARTIAL) { |
| protocol = skb->protocol; |
| ip_offset = ETH_HLEN; |
| |
| /*if it is a SW VLAN check the next protocol*/ |
| if (protocol == htons(ETH_P_8021Q)) { |
| ip_offset += VLAN_HLEN; |
| protocol = vlan_get_protocol(skb); |
| skb->protocol = protocol; |
| } |
| |
| if (skb->protocol == htons(ETH_P_IP)) { |
| flag_ipoffset |= 1 << HNS_TXD_L3CS_B; |
| /* check for tcp/udp header */ |
| flag_ipoffset |= 1 << HNS_TXD_L4CS_B; |
| |
| } else if (skb->protocol == htons(ETH_P_IPV6)) { |
| /* ipv6 has not l3 cs, check for L4 header */ |
| flag_ipoffset |= 1 << HNS_TXD_L4CS_B; |
| } |
| |
| flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S; |
| } |
| } |
| |
| flag_ipoffset |= frag_end << HNS_TXD_FE_B; |
| |
| desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid); |
| desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset); |
| |
| ring_ptr_move_fw(ring, next_to_use); |
| } |
| |
| static void unfill_desc(struct hnae_ring *ring) |
| { |
| ring_ptr_move_bw(ring, next_to_use); |
| } |
| |
| static int hns_nic_maybe_stop_tx( |
| struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring) |
| { |
| struct sk_buff *skb = *out_skb; |
| struct sk_buff *new_skb = NULL; |
| int buf_num; |
| |
| /* no. of segments (plus a header) */ |
| buf_num = skb_shinfo(skb)->nr_frags + 1; |
| |
| if (unlikely(buf_num > ring->max_desc_num_per_pkt)) { |
| if (ring_space(ring) < 1) |
| return -EBUSY; |
| |
| new_skb = skb_copy(skb, GFP_ATOMIC); |
| if (!new_skb) |
| return -ENOMEM; |
| |
| dev_kfree_skb_any(skb); |
| *out_skb = new_skb; |
| buf_num = 1; |
| } else if (buf_num > ring_space(ring)) { |
| return -EBUSY; |
| } |
| |
| *bnum = buf_num; |
| return 0; |
| } |
| |
| static int hns_nic_maybe_stop_tso( |
| struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring) |
| { |
| int i; |
| int size; |
| int buf_num; |
| int frag_num; |
| struct sk_buff *skb = *out_skb; |
| struct sk_buff *new_skb = NULL; |
| skb_frag_t *frag; |
| |
| size = skb_headlen(skb); |
| buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; |
| |
| frag_num = skb_shinfo(skb)->nr_frags; |
| for (i = 0; i < frag_num; i++) { |
| frag = &skb_shinfo(skb)->frags[i]; |
| size = skb_frag_size(frag); |
| buf_num += (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; |
| } |
| |
| if (unlikely(buf_num > ring->max_desc_num_per_pkt)) { |
| buf_num = (skb->len + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; |
| if (ring_space(ring) < buf_num) |
| return -EBUSY; |
| /* manual split the send packet */ |
| new_skb = skb_copy(skb, GFP_ATOMIC); |
| if (!new_skb) |
| return -ENOMEM; |
| dev_kfree_skb_any(skb); |
| *out_skb = new_skb; |
| |
| } else if (ring_space(ring) < buf_num) { |
| return -EBUSY; |
| } |
| |
| *bnum = buf_num; |
| return 0; |
| } |
| |
| static void fill_tso_desc(struct hnae_ring *ring, void *priv, |
| int size, dma_addr_t dma, int frag_end, |
| int buf_num, enum hns_desc_type type, int mtu) |
| { |
| int frag_buf_num; |
| int sizeoflast; |
| int k; |
| |
| frag_buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; |
| sizeoflast = size % BD_MAX_SEND_SIZE; |
| sizeoflast = sizeoflast ? sizeoflast : BD_MAX_SEND_SIZE; |
| |
| /* when the frag size is bigger than hardware, split this frag */ |
| for (k = 0; k < frag_buf_num; k++) |
| fill_v2_desc_hw(ring, priv, k == 0 ? size : 0, |
| (k == frag_buf_num - 1) ? |
| sizeoflast : BD_MAX_SEND_SIZE, |
| dma + BD_MAX_SEND_SIZE * k, |
| frag_end && (k == frag_buf_num - 1) ? 1 : 0, |
| buf_num, |
| (type == DESC_TYPE_SKB && !k) ? |
| DESC_TYPE_SKB : DESC_TYPE_PAGE, |
| mtu); |
| } |
| |
| netdev_tx_t hns_nic_net_xmit_hw(struct net_device *ndev, |
| struct sk_buff *skb, |
| struct hns_nic_ring_data *ring_data) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_ring *ring = ring_data->ring; |
| struct device *dev = ring_to_dev(ring); |
| struct netdev_queue *dev_queue; |
| skb_frag_t *frag; |
| int buf_num; |
| int seg_num; |
| dma_addr_t dma; |
| int size, next_to_use; |
| int i; |
| |
| switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) { |
| case -EBUSY: |
| ring->stats.tx_busy++; |
| goto out_net_tx_busy; |
| case -ENOMEM: |
| ring->stats.sw_err_cnt++; |
| netdev_err(ndev, "no memory to xmit!\n"); |
| goto out_err_tx_ok; |
| default: |
| break; |
| } |
| |
| /* no. of segments (plus a header) */ |
| seg_num = skb_shinfo(skb)->nr_frags + 1; |
| next_to_use = ring->next_to_use; |
| |
| /* fill the first part */ |
| size = skb_headlen(skb); |
| dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE); |
| if (dma_mapping_error(dev, dma)) { |
| netdev_err(ndev, "TX head DMA map failed\n"); |
| ring->stats.sw_err_cnt++; |
| goto out_err_tx_ok; |
| } |
| priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0, |
| buf_num, DESC_TYPE_SKB, ndev->mtu); |
| |
| /* fill the fragments */ |
| for (i = 1; i < seg_num; i++) { |
| frag = &skb_shinfo(skb)->frags[i - 1]; |
| size = skb_frag_size(frag); |
| dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE); |
| if (dma_mapping_error(dev, dma)) { |
| netdev_err(ndev, "TX frag(%d) DMA map failed\n", i); |
| ring->stats.sw_err_cnt++; |
| goto out_map_frag_fail; |
| } |
| priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma, |
| seg_num - 1 == i ? 1 : 0, buf_num, |
| DESC_TYPE_PAGE, ndev->mtu); |
| } |
| |
| /*complete translate all packets*/ |
| dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping); |
| netdev_tx_sent_queue(dev_queue, skb->len); |
| |
| netif_trans_update(ndev); |
| ndev->stats.tx_bytes += skb->len; |
| ndev->stats.tx_packets++; |
| |
| wmb(); /* commit all data before submit */ |
| assert(skb->queue_mapping < priv->ae_handle->q_num); |
| hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num); |
| |
| return NETDEV_TX_OK; |
| |
| out_map_frag_fail: |
| |
| while (ring->next_to_use != next_to_use) { |
| unfill_desc(ring); |
| if (ring->next_to_use != next_to_use) |
| dma_unmap_page(dev, |
| ring->desc_cb[ring->next_to_use].dma, |
| ring->desc_cb[ring->next_to_use].length, |
| DMA_TO_DEVICE); |
| else |
| dma_unmap_single(dev, |
| ring->desc_cb[next_to_use].dma, |
| ring->desc_cb[next_to_use].length, |
| DMA_TO_DEVICE); |
| } |
| |
| out_err_tx_ok: |
| |
| dev_kfree_skb_any(skb); |
| return NETDEV_TX_OK; |
| |
| out_net_tx_busy: |
| |
| netif_stop_subqueue(ndev, skb->queue_mapping); |
| |
| /* Herbert's original patch had: |
| * smp_mb__after_netif_stop_queue(); |
| * but since that doesn't exist yet, just open code it. |
| */ |
| smp_mb(); |
| return NETDEV_TX_BUSY; |
| } |
| |
| static void hns_nic_reuse_page(struct sk_buff *skb, int i, |
| struct hnae_ring *ring, int pull_len, |
| struct hnae_desc_cb *desc_cb) |
| { |
| struct hnae_desc *desc; |
| u32 truesize; |
| int size; |
| int last_offset; |
| bool twobufs; |
| |
| twobufs = ((PAGE_SIZE < 8192) && |
| hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048); |
| |
| desc = &ring->desc[ring->next_to_clean]; |
| size = le16_to_cpu(desc->rx.size); |
| |
| if (twobufs) { |
| truesize = hnae_buf_size(ring); |
| } else { |
| truesize = ALIGN(size, L1_CACHE_BYTES); |
| last_offset = hnae_page_size(ring) - hnae_buf_size(ring); |
| } |
| |
| skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len, |
| size - pull_len, truesize); |
| |
| /* avoid re-using remote pages,flag default unreuse */ |
| if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id())) |
| return; |
| |
| if (twobufs) { |
| /* if we are only owner of page we can reuse it */ |
| if (likely(page_count(desc_cb->priv) == 1)) { |
| /* flip page offset to other buffer */ |
| desc_cb->page_offset ^= truesize; |
| |
| desc_cb->reuse_flag = 1; |
| /* bump ref count on page before it is given*/ |
| get_page(desc_cb->priv); |
| } |
| return; |
| } |
| |
| /* move offset up to the next cache line */ |
| desc_cb->page_offset += truesize; |
| |
| if (desc_cb->page_offset <= last_offset) { |
| desc_cb->reuse_flag = 1; |
| /* bump ref count on page before it is given*/ |
| get_page(desc_cb->priv); |
| } |
| } |
| |
| static void get_v2rx_desc_bnum(u32 bnum_flag, int *out_bnum) |
| { |
| *out_bnum = hnae_get_field(bnum_flag, |
| HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S) + 1; |
| } |
| |
| static void get_rx_desc_bnum(u32 bnum_flag, int *out_bnum) |
| { |
| *out_bnum = hnae_get_field(bnum_flag, |
| HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S); |
| } |
| |
| static void hns_nic_rx_checksum(struct hns_nic_ring_data *ring_data, |
| struct sk_buff *skb, u32 flag) |
| { |
| struct net_device *netdev = ring_data->napi.dev; |
| u32 l3id; |
| u32 l4id; |
| |
| /* check if RX checksum offload is enabled */ |
| if (unlikely(!(netdev->features & NETIF_F_RXCSUM))) |
| return; |
| |
| /* In hardware, we only support checksum for the following protocols: |
| * 1) IPv4, |
| * 2) TCP(over IPv4 or IPv6), |
| * 3) UDP(over IPv4 or IPv6), |
| * 4) SCTP(over IPv4 or IPv6) |
| * but we support many L3(IPv4, IPv6, MPLS, PPPoE etc) and L4(TCP, |
| * UDP, GRE, SCTP, IGMP, ICMP etc.) protocols. |
| * |
| * Hardware limitation: |
| * Our present hardware RX Descriptor lacks L3/L4 checksum "Status & |
| * Error" bit (which usually can be used to indicate whether checksum |
| * was calculated by the hardware and if there was any error encountered |
| * during checksum calculation). |
| * |
| * Software workaround: |
| * We do get info within the RX descriptor about the kind of L3/L4 |
| * protocol coming in the packet and the error status. These errors |
| * might not just be checksum errors but could be related to version, |
| * length of IPv4, UDP, TCP etc. |
| * Because there is no-way of knowing if it is a L3/L4 error due to bad |
| * checksum or any other L3/L4 error, we will not (cannot) convey |
| * checksum status for such cases to upper stack and will not maintain |
| * the RX L3/L4 checksum counters as well. |
| */ |
| |
| l3id = hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S); |
| l4id = hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S); |
| |
| /* check L3 protocol for which checksum is supported */ |
| if ((l3id != HNS_RX_FLAG_L3ID_IPV4) && (l3id != HNS_RX_FLAG_L3ID_IPV6)) |
| return; |
| |
| /* check for any(not just checksum)flagged L3 protocol errors */ |
| if (unlikely(hnae_get_bit(flag, HNS_RXD_L3E_B))) |
| return; |
| |
| /* we do not support checksum of fragmented packets */ |
| if (unlikely(hnae_get_bit(flag, HNS_RXD_FRAG_B))) |
| return; |
| |
| /* check L4 protocol for which checksum is supported */ |
| if ((l4id != HNS_RX_FLAG_L4ID_TCP) && |
| (l4id != HNS_RX_FLAG_L4ID_UDP) && |
| (l4id != HNS_RX_FLAG_L4ID_SCTP)) |
| return; |
| |
| /* check for any(not just checksum)flagged L4 protocol errors */ |
| if (unlikely(hnae_get_bit(flag, HNS_RXD_L4E_B))) |
| return; |
| |
| /* now, this has to be a packet with valid RX checksum */ |
| skb->ip_summed = CHECKSUM_UNNECESSARY; |
| } |
| |
| static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data, |
| struct sk_buff **out_skb, int *out_bnum) |
| { |
| struct hnae_ring *ring = ring_data->ring; |
| struct net_device *ndev = ring_data->napi.dev; |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct sk_buff *skb; |
| struct hnae_desc *desc; |
| struct hnae_desc_cb *desc_cb; |
| unsigned char *va; |
| int bnum, length, i; |
| int pull_len; |
| u32 bnum_flag; |
| |
| desc = &ring->desc[ring->next_to_clean]; |
| desc_cb = &ring->desc_cb[ring->next_to_clean]; |
| |
| prefetch(desc); |
| |
| va = (unsigned char *)desc_cb->buf + desc_cb->page_offset; |
| |
| /* prefetch first cache line of first page */ |
| net_prefetch(va); |
| |
| skb = *out_skb = napi_alloc_skb(&ring_data->napi, |
| HNS_RX_HEAD_SIZE); |
| if (unlikely(!skb)) { |
| ring->stats.sw_err_cnt++; |
| return -ENOMEM; |
| } |
| |
| prefetchw(skb->data); |
| length = le16_to_cpu(desc->rx.pkt_len); |
| bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag); |
| priv->ops.get_rxd_bnum(bnum_flag, &bnum); |
| *out_bnum = bnum; |
| |
| if (length <= HNS_RX_HEAD_SIZE) { |
| memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long))); |
| |
| /* we can reuse buffer as-is, just make sure it is local */ |
| if (likely(page_to_nid(desc_cb->priv) == numa_node_id())) |
| desc_cb->reuse_flag = 1; |
| else /* this page cannot be reused so discard it */ |
| put_page(desc_cb->priv); |
| |
| ring_ptr_move_fw(ring, next_to_clean); |
| |
| if (unlikely(bnum != 1)) { /* check err*/ |
| *out_bnum = 1; |
| goto out_bnum_err; |
| } |
| } else { |
| ring->stats.seg_pkt_cnt++; |
| |
| pull_len = eth_get_headlen(ndev, va, HNS_RX_HEAD_SIZE); |
| memcpy(__skb_put(skb, pull_len), va, |
| ALIGN(pull_len, sizeof(long))); |
| |
| hns_nic_reuse_page(skb, 0, ring, pull_len, desc_cb); |
| ring_ptr_move_fw(ring, next_to_clean); |
| |
| if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/ |
| *out_bnum = 1; |
| goto out_bnum_err; |
| } |
| for (i = 1; i < bnum; i++) { |
| desc = &ring->desc[ring->next_to_clean]; |
| desc_cb = &ring->desc_cb[ring->next_to_clean]; |
| |
| hns_nic_reuse_page(skb, i, ring, 0, desc_cb); |
| ring_ptr_move_fw(ring, next_to_clean); |
| } |
| } |
| |
| /* check except process, free skb and jump the desc */ |
| if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) { |
| out_bnum_err: |
| *out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/ |
| netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n", |
| bnum, ring->max_desc_num_per_pkt, |
| length, (int)MAX_SKB_FRAGS, |
| ((u64 *)desc)[0], ((u64 *)desc)[1]); |
| ring->stats.err_bd_num++; |
| dev_kfree_skb_any(skb); |
| return -EDOM; |
| } |
| |
| bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag); |
| |
| if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) { |
| netdev_err(ndev, "no valid bd,%016llx,%016llx\n", |
| ((u64 *)desc)[0], ((u64 *)desc)[1]); |
| ring->stats.non_vld_descs++; |
| dev_kfree_skb_any(skb); |
| return -EINVAL; |
| } |
| |
| if (unlikely((!desc->rx.pkt_len) || |
| hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) { |
| ring->stats.err_pkt_len++; |
| dev_kfree_skb_any(skb); |
| return -EFAULT; |
| } |
| |
| if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) { |
| ring->stats.l2_err++; |
| dev_kfree_skb_any(skb); |
| return -EFAULT; |
| } |
| |
| ring->stats.rx_pkts++; |
| ring->stats.rx_bytes += skb->len; |
| |
| /* indicate to upper stack if our hardware has already calculated |
| * the RX checksum |
| */ |
| hns_nic_rx_checksum(ring_data, skb, bnum_flag); |
| |
| return 0; |
| } |
| |
| static void |
| hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count) |
| { |
| int i, ret; |
| struct hnae_desc_cb res_cbs; |
| struct hnae_desc_cb *desc_cb; |
| struct hnae_ring *ring = ring_data->ring; |
| struct net_device *ndev = ring_data->napi.dev; |
| |
| for (i = 0; i < cleand_count; i++) { |
| desc_cb = &ring->desc_cb[ring->next_to_use]; |
| if (desc_cb->reuse_flag) { |
| ring->stats.reuse_pg_cnt++; |
| hnae_reuse_buffer(ring, ring->next_to_use); |
| } else { |
| ret = hnae_reserve_buffer_map(ring, &res_cbs); |
| if (ret) { |
| ring->stats.sw_err_cnt++; |
| netdev_err(ndev, "hnae reserve buffer map failed.\n"); |
| break; |
| } |
| hnae_replace_buffer(ring, ring->next_to_use, &res_cbs); |
| } |
| |
| ring_ptr_move_fw(ring, next_to_use); |
| } |
| |
| wmb(); /* make all data has been write before submit */ |
| writel_relaxed(i, ring->io_base + RCB_REG_HEAD); |
| } |
| |
| /* return error number for error or number of desc left to take |
| */ |
| static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data, |
| struct sk_buff *skb) |
| { |
| struct net_device *ndev = ring_data->napi.dev; |
| |
| skb->protocol = eth_type_trans(skb, ndev); |
| napi_gro_receive(&ring_data->napi, skb); |
| } |
| |
| static int hns_desc_unused(struct hnae_ring *ring) |
| { |
| int ntc = ring->next_to_clean; |
| int ntu = ring->next_to_use; |
| |
| return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu; |
| } |
| |
| #define HNS_LOWEST_LATENCY_RATE 27 /* 27 MB/s */ |
| #define HNS_LOW_LATENCY_RATE 80 /* 80 MB/s */ |
| |
| #define HNS_COAL_BDNUM 3 |
| |
| static u32 hns_coal_rx_bdnum(struct hnae_ring *ring) |
| { |
| bool coal_enable = ring->q->handle->coal_adapt_en; |
| |
| if (coal_enable && |
| ring->coal_last_rx_bytes > HNS_LOWEST_LATENCY_RATE) |
| return HNS_COAL_BDNUM; |
| else |
| return 0; |
| } |
| |
| static void hns_update_rx_rate(struct hnae_ring *ring) |
| { |
| bool coal_enable = ring->q->handle->coal_adapt_en; |
| u32 time_passed_ms; |
| u64 total_bytes; |
| |
| if (!coal_enable || |
| time_before(jiffies, ring->coal_last_jiffies + (HZ >> 4))) |
| return; |
| |
| /* ring->stats.rx_bytes overflowed */ |
| if (ring->coal_last_rx_bytes > ring->stats.rx_bytes) { |
| ring->coal_last_rx_bytes = ring->stats.rx_bytes; |
| ring->coal_last_jiffies = jiffies; |
| return; |
| } |
| |
| total_bytes = ring->stats.rx_bytes - ring->coal_last_rx_bytes; |
| time_passed_ms = jiffies_to_msecs(jiffies - ring->coal_last_jiffies); |
| do_div(total_bytes, time_passed_ms); |
| ring->coal_rx_rate = total_bytes >> 10; |
| |
| ring->coal_last_rx_bytes = ring->stats.rx_bytes; |
| ring->coal_last_jiffies = jiffies; |
| } |
| |
| /** |
| * smooth_alg - smoothing algrithm for adjusting coalesce parameter |
| * @new_param: new value |
| * @old_param: old value |
| **/ |
| static u32 smooth_alg(u32 new_param, u32 old_param) |
| { |
| u32 gap = (new_param > old_param) ? new_param - old_param |
| : old_param - new_param; |
| |
| if (gap > 8) |
| gap >>= 3; |
| |
| if (new_param > old_param) |
| return old_param + gap; |
| else |
| return old_param - gap; |
| } |
| |
| /** |
| * hns_nic_adpt_coalesce - self adapte coalesce according to rx rate |
| * @ring_data: pointer to hns_nic_ring_data |
| **/ |
| static void hns_nic_adpt_coalesce(struct hns_nic_ring_data *ring_data) |
| { |
| struct hnae_ring *ring = ring_data->ring; |
| struct hnae_handle *handle = ring->q->handle; |
| u32 new_coal_param, old_coal_param = ring->coal_param; |
| |
| if (ring->coal_rx_rate < HNS_LOWEST_LATENCY_RATE) |
| new_coal_param = HNAE_LOWEST_LATENCY_COAL_PARAM; |
| else if (ring->coal_rx_rate < HNS_LOW_LATENCY_RATE) |
| new_coal_param = HNAE_LOW_LATENCY_COAL_PARAM; |
| else |
| new_coal_param = HNAE_BULK_LATENCY_COAL_PARAM; |
| |
| if (new_coal_param == old_coal_param && |
| new_coal_param == handle->coal_param) |
| return; |
| |
| new_coal_param = smooth_alg(new_coal_param, old_coal_param); |
| ring->coal_param = new_coal_param; |
| |
| /** |
| * Because all ring in one port has one coalesce param, when one ring |
| * calculate its own coalesce param, it cannot write to hardware at |
| * once. There are three conditions as follows: |
| * 1. current ring's coalesce param is larger than the hardware. |
| * 2. or ring which adapt last time can change again. |
| * 3. timeout. |
| */ |
| if (new_coal_param == handle->coal_param) { |
| handle->coal_last_jiffies = jiffies; |
| handle->coal_ring_idx = ring_data->queue_index; |
| } else if (new_coal_param > handle->coal_param || |
| handle->coal_ring_idx == ring_data->queue_index || |
| time_after(jiffies, handle->coal_last_jiffies + (HZ >> 4))) { |
| handle->dev->ops->set_coalesce_usecs(handle, |
| new_coal_param); |
| handle->dev->ops->set_coalesce_frames(handle, |
| 1, new_coal_param); |
| handle->coal_param = new_coal_param; |
| handle->coal_ring_idx = ring_data->queue_index; |
| handle->coal_last_jiffies = jiffies; |
| } |
| } |
| |
| static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data, |
| int budget, void *v) |
| { |
| struct hnae_ring *ring = ring_data->ring; |
| struct sk_buff *skb; |
| int num, bnum; |
| #define RCB_NOF_ALLOC_RX_BUFF_ONCE 16 |
| int recv_pkts, recv_bds, clean_count, err; |
| int unused_count = hns_desc_unused(ring); |
| |
| num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); |
| rmb(); /* make sure num taken effect before the other data is touched */ |
| |
| recv_pkts = 0, recv_bds = 0, clean_count = 0; |
| num -= unused_count; |
| |
| while (recv_pkts < budget && recv_bds < num) { |
| /* reuse or realloc buffers */ |
| if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) { |
| hns_nic_alloc_rx_buffers(ring_data, |
| clean_count + unused_count); |
| clean_count = 0; |
| unused_count = hns_desc_unused(ring); |
| } |
| |
| /* poll one pkt */ |
| err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum); |
| if (unlikely(!skb)) /* this fault cannot be repaired */ |
| goto out; |
| |
| recv_bds += bnum; |
| clean_count += bnum; |
| if (unlikely(err)) { /* do jump the err */ |
| recv_pkts++; |
| continue; |
| } |
| |
| /* do update ip stack process*/ |
| ((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)( |
| ring_data, skb); |
| recv_pkts++; |
| } |
| |
| out: |
| /* make all data has been write before submit */ |
| if (clean_count + unused_count > 0) |
| hns_nic_alloc_rx_buffers(ring_data, |
| clean_count + unused_count); |
| |
| return recv_pkts; |
| } |
| |
| static bool hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data) |
| { |
| struct hnae_ring *ring = ring_data->ring; |
| int num; |
| bool rx_stopped; |
| |
| hns_update_rx_rate(ring); |
| |
| /* for hardware bug fixed */ |
| ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0); |
| num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); |
| |
| if (num <= hns_coal_rx_bdnum(ring)) { |
| if (ring->q->handle->coal_adapt_en) |
| hns_nic_adpt_coalesce(ring_data); |
| |
| rx_stopped = true; |
| } else { |
| ring_data->ring->q->handle->dev->ops->toggle_ring_irq( |
| ring_data->ring, 1); |
| |
| rx_stopped = false; |
| } |
| |
| return rx_stopped; |
| } |
| |
| static bool hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data) |
| { |
| struct hnae_ring *ring = ring_data->ring; |
| int num; |
| |
| hns_update_rx_rate(ring); |
| num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM); |
| |
| if (num <= hns_coal_rx_bdnum(ring)) { |
| if (ring->q->handle->coal_adapt_en) |
| hns_nic_adpt_coalesce(ring_data); |
| |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring, |
| int *bytes, int *pkts) |
| { |
| struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean]; |
| |
| (*pkts) += (desc_cb->type == DESC_TYPE_SKB); |
| (*bytes) += desc_cb->length; |
| /* desc_cb will be cleaned, after hnae_free_buffer_detach*/ |
| hnae_free_buffer_detach(ring, ring->next_to_clean); |
| |
| ring_ptr_move_fw(ring, next_to_clean); |
| } |
| |
| static int is_valid_clean_head(struct hnae_ring *ring, int h) |
| { |
| int u = ring->next_to_use; |
| int c = ring->next_to_clean; |
| |
| if (unlikely(h > ring->desc_num)) |
| return 0; |
| |
| assert(u > 0 && u < ring->desc_num); |
| assert(c > 0 && c < ring->desc_num); |
| assert(u != c && h != c); /* must be checked before call this func */ |
| |
| return u > c ? (h > c && h <= u) : (h > c || h <= u); |
| } |
| |
| /* reclaim all desc in one budget |
| * return error or number of desc left |
| */ |
| static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data, |
| int budget, void *v) |
| { |
| struct hnae_ring *ring = ring_data->ring; |
| struct net_device *ndev = ring_data->napi.dev; |
| struct netdev_queue *dev_queue; |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| int head; |
| int bytes, pkts; |
| |
| head = readl_relaxed(ring->io_base + RCB_REG_HEAD); |
| rmb(); /* make sure head is ready before touch any data */ |
| |
| if (is_ring_empty(ring) || head == ring->next_to_clean) |
| return 0; /* no data to poll */ |
| |
| if (!is_valid_clean_head(ring, head)) { |
| netdev_err(ndev, "wrong head (%d, %d-%d)\n", head, |
| ring->next_to_use, ring->next_to_clean); |
| ring->stats.io_err_cnt++; |
| return -EIO; |
| } |
| |
| bytes = 0; |
| pkts = 0; |
| while (head != ring->next_to_clean) { |
| hns_nic_reclaim_one_desc(ring, &bytes, &pkts); |
| /* issue prefetch for next Tx descriptor */ |
| prefetch(&ring->desc_cb[ring->next_to_clean]); |
| } |
| /* update tx ring statistics. */ |
| ring->stats.tx_pkts += pkts; |
| ring->stats.tx_bytes += bytes; |
| |
| dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index); |
| netdev_tx_completed_queue(dev_queue, pkts, bytes); |
| |
| if (unlikely(priv->link && !netif_carrier_ok(ndev))) |
| netif_carrier_on(ndev); |
| |
| if (unlikely(pkts && netif_carrier_ok(ndev) && |
| (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) { |
| /* Make sure that anybody stopping the queue after this |
| * sees the new next_to_clean. |
| */ |
| smp_mb(); |
| if (netif_tx_queue_stopped(dev_queue) && |
| !test_bit(NIC_STATE_DOWN, &priv->state)) { |
| netif_tx_wake_queue(dev_queue); |
| ring->stats.restart_queue++; |
| } |
| } |
| return 0; |
| } |
| |
| static bool hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data) |
| { |
| struct hnae_ring *ring = ring_data->ring; |
| int head; |
| |
| ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0); |
| |
| head = readl_relaxed(ring->io_base + RCB_REG_HEAD); |
| |
| if (head != ring->next_to_clean) { |
| ring_data->ring->q->handle->dev->ops->toggle_ring_irq( |
| ring_data->ring, 1); |
| |
| return false; |
| } else { |
| return true; |
| } |
| } |
| |
| static bool hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data) |
| { |
| struct hnae_ring *ring = ring_data->ring; |
| int head = readl_relaxed(ring->io_base + RCB_REG_HEAD); |
| |
| if (head == ring->next_to_clean) |
| return true; |
| else |
| return false; |
| } |
| |
| static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data) |
| { |
| struct hnae_ring *ring = ring_data->ring; |
| struct net_device *ndev = ring_data->napi.dev; |
| struct netdev_queue *dev_queue; |
| int head; |
| int bytes, pkts; |
| |
| head = ring->next_to_use; /* ntu :soft setted ring position*/ |
| bytes = 0; |
| pkts = 0; |
| while (head != ring->next_to_clean) |
| hns_nic_reclaim_one_desc(ring, &bytes, &pkts); |
| |
| dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index); |
| netdev_tx_reset_queue(dev_queue); |
| } |
| |
| static int hns_nic_common_poll(struct napi_struct *napi, int budget) |
| { |
| int clean_complete = 0; |
| struct hns_nic_ring_data *ring_data = |
| container_of(napi, struct hns_nic_ring_data, napi); |
| struct hnae_ring *ring = ring_data->ring; |
| |
| clean_complete += ring_data->poll_one( |
| ring_data, budget - clean_complete, |
| ring_data->ex_process); |
| |
| if (clean_complete < budget) { |
| if (ring_data->fini_process(ring_data)) { |
| napi_complete(napi); |
| ring->q->handle->dev->ops->toggle_ring_irq(ring, 0); |
| } else { |
| return budget; |
| } |
| } |
| |
| return clean_complete; |
| } |
| |
| static irqreturn_t hns_irq_handle(int irq, void *dev) |
| { |
| struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev; |
| |
| ring_data->ring->q->handle->dev->ops->toggle_ring_irq( |
| ring_data->ring, 1); |
| napi_schedule(&ring_data->napi); |
| |
| return IRQ_HANDLED; |
| } |
| |
| /** |
| *hns_nic_adjust_link - adjust net work mode by the phy stat or new param |
| *@ndev: net device |
| */ |
| static void hns_nic_adjust_link(struct net_device *ndev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_handle *h = priv->ae_handle; |
| int state = 1; |
| |
| /* If there is no phy, do not need adjust link */ |
| if (ndev->phydev) { |
| /* When phy link down, do nothing */ |
| if (ndev->phydev->link == 0) |
| return; |
| |
| if (h->dev->ops->need_adjust_link(h, ndev->phydev->speed, |
| ndev->phydev->duplex)) { |
| /* because Hi161X chip don't support to change gmac |
| * speed and duplex with traffic. Delay 200ms to |
| * make sure there is no more data in chip FIFO. |
| */ |
| netif_carrier_off(ndev); |
| msleep(200); |
| h->dev->ops->adjust_link(h, ndev->phydev->speed, |
| ndev->phydev->duplex); |
| netif_carrier_on(ndev); |
| } |
| } |
| |
| state = state && h->dev->ops->get_status(h); |
| |
| if (state != priv->link) { |
| if (state) { |
| netif_carrier_on(ndev); |
| netif_tx_wake_all_queues(ndev); |
| netdev_info(ndev, "link up\n"); |
| } else { |
| netif_carrier_off(ndev); |
| netdev_info(ndev, "link down\n"); |
| } |
| priv->link = state; |
| } |
| } |
| |
| /** |
| *hns_nic_init_phy - init phy |
| *@ndev: net device |
| *@h: ae handle |
| * Return 0 on success, negative on failure |
| */ |
| int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h) |
| { |
| __ETHTOOL_DECLARE_LINK_MODE_MASK(supported) = { 0, }; |
| struct phy_device *phy_dev = h->phy_dev; |
| int ret; |
| |
| if (!h->phy_dev) |
| return 0; |
| |
| ethtool_convert_legacy_u32_to_link_mode(supported, h->if_support); |
| linkmode_and(phy_dev->supported, phy_dev->supported, supported); |
| linkmode_copy(phy_dev->advertising, phy_dev->supported); |
| |
| if (h->phy_if == PHY_INTERFACE_MODE_XGMII) |
| phy_dev->autoneg = false; |
| |
| if (h->phy_if != PHY_INTERFACE_MODE_XGMII) { |
| phy_dev->dev_flags = 0; |
| |
| ret = phy_connect_direct(ndev, phy_dev, hns_nic_adjust_link, |
| h->phy_if); |
| } else { |
| ret = phy_attach_direct(ndev, phy_dev, 0, h->phy_if); |
| } |
| if (unlikely(ret)) |
| return -ENODEV; |
| |
| phy_attached_info(phy_dev); |
| |
| return 0; |
| } |
| |
| static int hns_nic_ring_open(struct net_device *netdev, int idx) |
| { |
| struct hns_nic_priv *priv = netdev_priv(netdev); |
| struct hnae_handle *h = priv->ae_handle; |
| |
| napi_enable(&priv->ring_data[idx].napi); |
| |
| enable_irq(priv->ring_data[idx].ring->irq); |
| h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0); |
| |
| return 0; |
| } |
| |
| static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_handle *h = priv->ae_handle; |
| struct sockaddr *mac_addr = p; |
| int ret; |
| |
| if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data)) |
| return -EADDRNOTAVAIL; |
| |
| ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data); |
| if (ret) { |
| netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret); |
| return ret; |
| } |
| |
| eth_hw_addr_set(ndev, mac_addr->sa_data); |
| |
| return 0; |
| } |
| |
| static void hns_nic_update_stats(struct net_device *netdev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(netdev); |
| struct hnae_handle *h = priv->ae_handle; |
| |
| h->dev->ops->update_stats(h, &netdev->stats); |
| } |
| |
| /* set mac addr if it is configed. or leave it to the AE driver */ |
| static void hns_init_mac_addr(struct net_device *ndev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| |
| if (device_get_ethdev_address(priv->dev, ndev)) { |
| eth_hw_addr_random(ndev); |
| dev_warn(priv->dev, "No valid mac, use random mac %pM", |
| ndev->dev_addr); |
| } |
| } |
| |
| static void hns_nic_ring_close(struct net_device *netdev, int idx) |
| { |
| struct hns_nic_priv *priv = netdev_priv(netdev); |
| struct hnae_handle *h = priv->ae_handle; |
| |
| h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1); |
| disable_irq(priv->ring_data[idx].ring->irq); |
| |
| napi_disable(&priv->ring_data[idx].napi); |
| } |
| |
| static int hns_nic_init_affinity_mask(int q_num, int ring_idx, |
| struct hnae_ring *ring, cpumask_t *mask) |
| { |
| int cpu; |
| |
| /* Different irq balance between 16core and 32core. |
| * The cpu mask set by ring index according to the ring flag |
| * which indicate the ring is tx or rx. |
| */ |
| if (q_num == num_possible_cpus()) { |
| if (is_tx_ring(ring)) |
| cpu = ring_idx; |
| else |
| cpu = ring_idx - q_num; |
| } else { |
| if (is_tx_ring(ring)) |
| cpu = ring_idx * 2; |
| else |
| cpu = (ring_idx - q_num) * 2 + 1; |
| } |
| |
| cpumask_clear(mask); |
| cpumask_set_cpu(cpu, mask); |
| |
| return cpu; |
| } |
| |
| static void hns_nic_free_irq(int q_num, struct hns_nic_priv *priv) |
| { |
| int i; |
| |
| for (i = 0; i < q_num * 2; i++) { |
| if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) { |
| irq_set_affinity_hint(priv->ring_data[i].ring->irq, |
| NULL); |
| free_irq(priv->ring_data[i].ring->irq, |
| &priv->ring_data[i]); |
| priv->ring_data[i].ring->irq_init_flag = |
| RCB_IRQ_NOT_INITED; |
| } |
| } |
| } |
| |
| static int hns_nic_init_irq(struct hns_nic_priv *priv) |
| { |
| struct hnae_handle *h = priv->ae_handle; |
| struct hns_nic_ring_data *rd; |
| int i; |
| int ret; |
| int cpu; |
| |
| for (i = 0; i < h->q_num * 2; i++) { |
| rd = &priv->ring_data[i]; |
| |
| if (rd->ring->irq_init_flag == RCB_IRQ_INITED) |
| break; |
| |
| snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN, |
| "%s-%s%d", priv->netdev->name, |
| (is_tx_ring(rd->ring) ? "tx" : "rx"), rd->queue_index); |
| |
| rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0'; |
| |
| irq_set_status_flags(rd->ring->irq, IRQ_NOAUTOEN); |
| ret = request_irq(rd->ring->irq, |
| hns_irq_handle, 0, rd->ring->ring_name, rd); |
| if (ret) { |
| netdev_err(priv->netdev, "request irq(%d) fail\n", |
| rd->ring->irq); |
| goto out_free_irq; |
| } |
| |
| cpu = hns_nic_init_affinity_mask(h->q_num, i, |
| rd->ring, &rd->mask); |
| |
| if (cpu_online(cpu)) |
| irq_set_affinity_hint(rd->ring->irq, |
| &rd->mask); |
| |
| rd->ring->irq_init_flag = RCB_IRQ_INITED; |
| } |
| |
| return 0; |
| |
| out_free_irq: |
| hns_nic_free_irq(h->q_num, priv); |
| return ret; |
| } |
| |
| static int hns_nic_net_up(struct net_device *ndev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_handle *h = priv->ae_handle; |
| int i, j; |
| int ret; |
| |
| if (!test_bit(NIC_STATE_DOWN, &priv->state)) |
| return 0; |
| |
| ret = hns_nic_init_irq(priv); |
| if (ret != 0) { |
| netdev_err(ndev, "hns init irq failed! ret=%d\n", ret); |
| return ret; |
| } |
| |
| for (i = 0; i < h->q_num * 2; i++) { |
| ret = hns_nic_ring_open(ndev, i); |
| if (ret) |
| goto out_has_some_queues; |
| } |
| |
| ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr); |
| if (ret) |
| goto out_set_mac_addr_err; |
| |
| ret = h->dev->ops->start ? h->dev->ops->start(h) : 0; |
| if (ret) |
| goto out_start_err; |
| |
| if (ndev->phydev) |
| phy_start(ndev->phydev); |
| |
| clear_bit(NIC_STATE_DOWN, &priv->state); |
| (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ); |
| |
| return 0; |
| |
| out_start_err: |
| netif_stop_queue(ndev); |
| out_set_mac_addr_err: |
| out_has_some_queues: |
| for (j = i - 1; j >= 0; j--) |
| hns_nic_ring_close(ndev, j); |
| |
| hns_nic_free_irq(h->q_num, priv); |
| set_bit(NIC_STATE_DOWN, &priv->state); |
| |
| return ret; |
| } |
| |
| static void hns_nic_net_down(struct net_device *ndev) |
| { |
| int i; |
| struct hnae_ae_ops *ops; |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| |
| if (test_and_set_bit(NIC_STATE_DOWN, &priv->state)) |
| return; |
| |
| (void)del_timer_sync(&priv->service_timer); |
| netif_tx_stop_all_queues(ndev); |
| netif_carrier_off(ndev); |
| netif_tx_disable(ndev); |
| priv->link = 0; |
| |
| if (ndev->phydev) |
| phy_stop(ndev->phydev); |
| |
| ops = priv->ae_handle->dev->ops; |
| |
| if (ops->stop) |
| ops->stop(priv->ae_handle); |
| |
| netif_tx_stop_all_queues(ndev); |
| |
| for (i = priv->ae_handle->q_num - 1; i >= 0; i--) { |
| hns_nic_ring_close(ndev, i); |
| hns_nic_ring_close(ndev, i + priv->ae_handle->q_num); |
| |
| /* clean tx buffers*/ |
| hns_nic_tx_clr_all_bufs(priv->ring_data + i); |
| } |
| } |
| |
| void hns_nic_net_reset(struct net_device *ndev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_handle *handle = priv->ae_handle; |
| |
| while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state)) |
| usleep_range(1000, 2000); |
| |
| (void)hnae_reinit_handle(handle); |
| |
| clear_bit(NIC_STATE_RESETTING, &priv->state); |
| } |
| |
| void hns_nic_net_reinit(struct net_device *netdev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(netdev); |
| enum hnae_port_type type = priv->ae_handle->port_type; |
| |
| netif_trans_update(priv->netdev); |
| while (test_and_set_bit(NIC_STATE_REINITING, &priv->state)) |
| usleep_range(1000, 2000); |
| |
| hns_nic_net_down(netdev); |
| |
| /* Only do hns_nic_net_reset in debug mode |
| * because of hardware limitation. |
| */ |
| if (type == HNAE_PORT_DEBUG) |
| hns_nic_net_reset(netdev); |
| |
| (void)hns_nic_net_up(netdev); |
| clear_bit(NIC_STATE_REINITING, &priv->state); |
| } |
| |
| static int hns_nic_net_open(struct net_device *ndev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_handle *h = priv->ae_handle; |
| int ret; |
| |
| if (test_bit(NIC_STATE_TESTING, &priv->state)) |
| return -EBUSY; |
| |
| priv->link = 0; |
| netif_carrier_off(ndev); |
| |
| ret = netif_set_real_num_tx_queues(ndev, h->q_num); |
| if (ret < 0) { |
| netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n", |
| ret); |
| return ret; |
| } |
| |
| ret = netif_set_real_num_rx_queues(ndev, h->q_num); |
| if (ret < 0) { |
| netdev_err(ndev, |
| "netif_set_real_num_rx_queues fail, ret=%d!\n", ret); |
| return ret; |
| } |
| |
| ret = hns_nic_net_up(ndev); |
| if (ret) { |
| netdev_err(ndev, |
| "hns net up fail, ret=%d!\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int hns_nic_net_stop(struct net_device *ndev) |
| { |
| hns_nic_net_down(ndev); |
| |
| return 0; |
| } |
| |
| static void hns_tx_timeout_reset(struct hns_nic_priv *priv); |
| #define HNS_TX_TIMEO_LIMIT (40 * HZ) |
| static void hns_nic_net_timeout(struct net_device *ndev, unsigned int txqueue) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| |
| if (ndev->watchdog_timeo < HNS_TX_TIMEO_LIMIT) { |
| ndev->watchdog_timeo *= 2; |
| netdev_info(ndev, "watchdog_timo changed to %d.\n", |
| ndev->watchdog_timeo); |
| } else { |
| ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT; |
| hns_tx_timeout_reset(priv); |
| } |
| } |
| |
| static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb, |
| struct net_device *ndev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| |
| assert(skb->queue_mapping < priv->ae_handle->q_num); |
| |
| return hns_nic_net_xmit_hw(ndev, skb, |
| &tx_ring_data(priv, skb->queue_mapping)); |
| } |
| |
| static void hns_nic_drop_rx_fetch(struct hns_nic_ring_data *ring_data, |
| struct sk_buff *skb) |
| { |
| dev_kfree_skb_any(skb); |
| } |
| |
| #define HNS_LB_TX_RING 0 |
| static struct sk_buff *hns_assemble_skb(struct net_device *ndev) |
| { |
| struct sk_buff *skb; |
| struct ethhdr *ethhdr; |
| int frame_len; |
| |
| /* allocate test skb */ |
| skb = alloc_skb(64, GFP_KERNEL); |
| if (!skb) |
| return NULL; |
| |
| skb_put(skb, 64); |
| skb->dev = ndev; |
| memset(skb->data, 0xFF, skb->len); |
| |
| /* must be tcp/ip package */ |
| ethhdr = (struct ethhdr *)skb->data; |
| ethhdr->h_proto = htons(ETH_P_IP); |
| |
| frame_len = skb->len & (~1ul); |
| memset(&skb->data[frame_len / 2], 0xAA, |
| frame_len / 2 - 1); |
| |
| skb->queue_mapping = HNS_LB_TX_RING; |
| |
| return skb; |
| } |
| |
| static int hns_enable_serdes_lb(struct net_device *ndev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_handle *h = priv->ae_handle; |
| struct hnae_ae_ops *ops = h->dev->ops; |
| int speed, duplex; |
| int ret; |
| |
| ret = ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 1); |
| if (ret) |
| return ret; |
| |
| ret = ops->start ? ops->start(h) : 0; |
| if (ret) |
| return ret; |
| |
| /* link adjust duplex*/ |
| if (h->phy_if != PHY_INTERFACE_MODE_XGMII) |
| speed = 1000; |
| else |
| speed = 10000; |
| duplex = 1; |
| |
| ops->adjust_link(h, speed, duplex); |
| |
| /* wait h/w ready */ |
| mdelay(300); |
| |
| return 0; |
| } |
| |
| static void hns_disable_serdes_lb(struct net_device *ndev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_handle *h = priv->ae_handle; |
| struct hnae_ae_ops *ops = h->dev->ops; |
| |
| ops->stop(h); |
| ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 0); |
| } |
| |
| /** |
| *hns_nic_clear_all_rx_fetch - clear the chip fetched descriptions. The |
| *function as follows: |
| * 1. if one rx ring has found the page_offset is not equal 0 between head |
| * and tail, it means that the chip fetched the wrong descs for the ring |
| * which buffer size is 4096. |
| * 2. we set the chip serdes loopback and set rss indirection to the ring. |
| * 3. construct 64-bytes ip broadcast packages, wait the associated rx ring |
| * receiving all packages and it will fetch new descriptions. |
| * 4. recover to the original state. |
| * |
| *@ndev: net device |
| */ |
| static int hns_nic_clear_all_rx_fetch(struct net_device *ndev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_handle *h = priv->ae_handle; |
| struct hnae_ae_ops *ops = h->dev->ops; |
| struct hns_nic_ring_data *rd; |
| struct hnae_ring *ring; |
| struct sk_buff *skb; |
| u32 *org_indir; |
| u32 *cur_indir; |
| int indir_size; |
| int head, tail; |
| int fetch_num; |
| int i, j; |
| bool found; |
| int retry_times; |
| int ret = 0; |
| |
| /* alloc indir memory */ |
| indir_size = ops->get_rss_indir_size(h) * sizeof(*org_indir); |
| org_indir = kzalloc(indir_size, GFP_KERNEL); |
| if (!org_indir) |
| return -ENOMEM; |
| |
| /* store the original indirection */ |
| ops->get_rss(h, org_indir, NULL, NULL); |
| |
| cur_indir = kzalloc(indir_size, GFP_KERNEL); |
| if (!cur_indir) { |
| ret = -ENOMEM; |
| goto cur_indir_alloc_err; |
| } |
| |
| /* set loopback */ |
| if (hns_enable_serdes_lb(ndev)) { |
| ret = -EINVAL; |
| goto enable_serdes_lb_err; |
| } |
| |
| /* foreach every rx ring to clear fetch desc */ |
| for (i = 0; i < h->q_num; i++) { |
| ring = &h->qs[i]->rx_ring; |
| head = readl_relaxed(ring->io_base + RCB_REG_HEAD); |
| tail = readl_relaxed(ring->io_base + RCB_REG_TAIL); |
| found = false; |
| fetch_num = ring_dist(ring, head, tail); |
| |
| while (head != tail) { |
| if (ring->desc_cb[head].page_offset != 0) { |
| found = true; |
| break; |
| } |
| |
| head++; |
| if (head == ring->desc_num) |
| head = 0; |
| } |
| |
| if (found) { |
| for (j = 0; j < indir_size / sizeof(*org_indir); j++) |
| cur_indir[j] = i; |
| ops->set_rss(h, cur_indir, NULL, 0); |
| |
| for (j = 0; j < fetch_num; j++) { |
| /* alloc one skb and init */ |
| skb = hns_assemble_skb(ndev); |
| if (!skb) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| rd = &tx_ring_data(priv, skb->queue_mapping); |
| hns_nic_net_xmit_hw(ndev, skb, rd); |
| |
| retry_times = 0; |
| while (retry_times++ < 10) { |
| mdelay(10); |
| /* clean rx */ |
| rd = &rx_ring_data(priv, i); |
| if (rd->poll_one(rd, fetch_num, |
| hns_nic_drop_rx_fetch)) |
| break; |
| } |
| |
| retry_times = 0; |
| while (retry_times++ < 10) { |
| mdelay(10); |
| /* clean tx ring 0 send package */ |
| rd = &tx_ring_data(priv, |
| HNS_LB_TX_RING); |
| if (rd->poll_one(rd, fetch_num, NULL)) |
| break; |
| } |
| } |
| } |
| } |
| |
| out: |
| /* restore everything */ |
| ops->set_rss(h, org_indir, NULL, 0); |
| hns_disable_serdes_lb(ndev); |
| enable_serdes_lb_err: |
| kfree(cur_indir); |
| cur_indir_alloc_err: |
| kfree(org_indir); |
| |
| return ret; |
| } |
| |
| static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_handle *h = priv->ae_handle; |
| bool if_running = netif_running(ndev); |
| int ret; |
| |
| /* MTU < 68 is an error and causes problems on some kernels */ |
| if (new_mtu < 68) |
| return -EINVAL; |
| |
| /* MTU no change */ |
| if (new_mtu == ndev->mtu) |
| return 0; |
| |
| if (!h->dev->ops->set_mtu) |
| return -ENOTSUPP; |
| |
| if (if_running) { |
| (void)hns_nic_net_stop(ndev); |
| msleep(100); |
| } |
| |
| if (priv->enet_ver != AE_VERSION_1 && |
| ndev->mtu <= BD_SIZE_2048_MAX_MTU && |
| new_mtu > BD_SIZE_2048_MAX_MTU) { |
| /* update desc */ |
| hnae_reinit_all_ring_desc(h); |
| |
| /* clear the package which the chip has fetched */ |
| ret = hns_nic_clear_all_rx_fetch(ndev); |
| |
| /* the page offset must be consist with desc */ |
| hnae_reinit_all_ring_page_off(h); |
| |
| if (ret) { |
| netdev_err(ndev, "clear the fetched desc fail\n"); |
| goto out; |
| } |
| } |
| |
| ret = h->dev->ops->set_mtu(h, new_mtu); |
| if (ret) { |
| netdev_err(ndev, "set mtu fail, return value %d\n", |
| ret); |
| goto out; |
| } |
| |
| /* finally, set new mtu to netdevice */ |
| ndev->mtu = new_mtu; |
| |
| out: |
| if (if_running) { |
| if (hns_nic_net_open(ndev)) { |
| netdev_err(ndev, "hns net open fail\n"); |
| ret = -EINVAL; |
| } |
| } |
| |
| return ret; |
| } |
| |
| static int hns_nic_set_features(struct net_device *netdev, |
| netdev_features_t features) |
| { |
| struct hns_nic_priv *priv = netdev_priv(netdev); |
| |
| switch (priv->enet_ver) { |
| case AE_VERSION_1: |
| if (features & (NETIF_F_TSO | NETIF_F_TSO6)) |
| netdev_info(netdev, "enet v1 do not support tso!\n"); |
| break; |
| default: |
| if (features & (NETIF_F_TSO | NETIF_F_TSO6)) { |
| priv->ops.fill_desc = fill_tso_desc; |
| priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso; |
| /* The chip only support 7*4096 */ |
| netif_set_tso_max_size(netdev, 7 * 4096); |
| } else { |
| priv->ops.fill_desc = fill_v2_desc; |
| priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx; |
| } |
| break; |
| } |
| netdev->features = features; |
| return 0; |
| } |
| |
| static netdev_features_t hns_nic_fix_features( |
| struct net_device *netdev, netdev_features_t features) |
| { |
| struct hns_nic_priv *priv = netdev_priv(netdev); |
| |
| switch (priv->enet_ver) { |
| case AE_VERSION_1: |
| features &= ~(NETIF_F_TSO | NETIF_F_TSO6 | |
| NETIF_F_HW_VLAN_CTAG_FILTER); |
| break; |
| default: |
| break; |
| } |
| return features; |
| } |
| |
| static int hns_nic_uc_sync(struct net_device *netdev, const unsigned char *addr) |
| { |
| struct hns_nic_priv *priv = netdev_priv(netdev); |
| struct hnae_handle *h = priv->ae_handle; |
| |
| if (h->dev->ops->add_uc_addr) |
| return h->dev->ops->add_uc_addr(h, addr); |
| |
| return 0; |
| } |
| |
| static int hns_nic_uc_unsync(struct net_device *netdev, |
| const unsigned char *addr) |
| { |
| struct hns_nic_priv *priv = netdev_priv(netdev); |
| struct hnae_handle *h = priv->ae_handle; |
| |
| if (h->dev->ops->rm_uc_addr) |
| return h->dev->ops->rm_uc_addr(h, addr); |
| |
| return 0; |
| } |
| |
| /** |
| * hns_set_multicast_list - set mutl mac address |
| * @ndev: net device |
| * |
| * return void |
| */ |
| static void hns_set_multicast_list(struct net_device *ndev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_handle *h = priv->ae_handle; |
| struct netdev_hw_addr *ha = NULL; |
| |
| if (!h) { |
| netdev_err(ndev, "hnae handle is null\n"); |
| return; |
| } |
| |
| if (h->dev->ops->clr_mc_addr) |
| if (h->dev->ops->clr_mc_addr(h)) |
| netdev_err(ndev, "clear multicast address fail\n"); |
| |
| if (h->dev->ops->set_mc_addr) { |
| netdev_for_each_mc_addr(ha, ndev) |
| if (h->dev->ops->set_mc_addr(h, ha->addr)) |
| netdev_err(ndev, "set multicast fail\n"); |
| } |
| } |
| |
| static void hns_nic_set_rx_mode(struct net_device *ndev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_handle *h = priv->ae_handle; |
| |
| if (h->dev->ops->set_promisc_mode) { |
| if (ndev->flags & IFF_PROMISC) |
| h->dev->ops->set_promisc_mode(h, 1); |
| else |
| h->dev->ops->set_promisc_mode(h, 0); |
| } |
| |
| hns_set_multicast_list(ndev); |
| |
| if (__dev_uc_sync(ndev, hns_nic_uc_sync, hns_nic_uc_unsync)) |
| netdev_err(ndev, "sync uc address fail\n"); |
| } |
| |
| static void hns_nic_get_stats64(struct net_device *ndev, |
| struct rtnl_link_stats64 *stats) |
| { |
| int idx; |
| u64 tx_bytes = 0; |
| u64 rx_bytes = 0; |
| u64 tx_pkts = 0; |
| u64 rx_pkts = 0; |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_handle *h = priv->ae_handle; |
| |
| for (idx = 0; idx < h->q_num; idx++) { |
| tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes; |
| tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts; |
| rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes; |
| rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts; |
| } |
| |
| stats->tx_bytes = tx_bytes; |
| stats->tx_packets = tx_pkts; |
| stats->rx_bytes = rx_bytes; |
| stats->rx_packets = rx_pkts; |
| |
| stats->rx_errors = ndev->stats.rx_errors; |
| stats->multicast = ndev->stats.multicast; |
| stats->rx_length_errors = ndev->stats.rx_length_errors; |
| stats->rx_crc_errors = ndev->stats.rx_crc_errors; |
| stats->rx_missed_errors = ndev->stats.rx_missed_errors; |
| |
| stats->tx_errors = ndev->stats.tx_errors; |
| stats->rx_dropped = ndev->stats.rx_dropped; |
| stats->tx_dropped = ndev->stats.tx_dropped; |
| stats->collisions = ndev->stats.collisions; |
| stats->rx_over_errors = ndev->stats.rx_over_errors; |
| stats->rx_frame_errors = ndev->stats.rx_frame_errors; |
| stats->rx_fifo_errors = ndev->stats.rx_fifo_errors; |
| stats->tx_aborted_errors = ndev->stats.tx_aborted_errors; |
| stats->tx_carrier_errors = ndev->stats.tx_carrier_errors; |
| stats->tx_fifo_errors = ndev->stats.tx_fifo_errors; |
| stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors; |
| stats->tx_window_errors = ndev->stats.tx_window_errors; |
| stats->rx_compressed = ndev->stats.rx_compressed; |
| stats->tx_compressed = ndev->stats.tx_compressed; |
| } |
| |
| static u16 |
| hns_nic_select_queue(struct net_device *ndev, struct sk_buff *skb, |
| struct net_device *sb_dev) |
| { |
| struct ethhdr *eth_hdr = (struct ethhdr *)skb->data; |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| |
| /* fix hardware broadcast/multicast packets queue loopback */ |
| if (!AE_IS_VER1(priv->enet_ver) && |
| is_multicast_ether_addr(eth_hdr->h_dest)) |
| return 0; |
| else |
| return netdev_pick_tx(ndev, skb, NULL); |
| } |
| |
| static const struct net_device_ops hns_nic_netdev_ops = { |
| .ndo_open = hns_nic_net_open, |
| .ndo_stop = hns_nic_net_stop, |
| .ndo_start_xmit = hns_nic_net_xmit, |
| .ndo_tx_timeout = hns_nic_net_timeout, |
| .ndo_set_mac_address = hns_nic_net_set_mac_address, |
| .ndo_change_mtu = hns_nic_change_mtu, |
| .ndo_eth_ioctl = phy_do_ioctl_running, |
| .ndo_set_features = hns_nic_set_features, |
| .ndo_fix_features = hns_nic_fix_features, |
| .ndo_get_stats64 = hns_nic_get_stats64, |
| .ndo_set_rx_mode = hns_nic_set_rx_mode, |
| .ndo_select_queue = hns_nic_select_queue, |
| }; |
| |
| static void hns_nic_update_link_status(struct net_device *netdev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(netdev); |
| |
| struct hnae_handle *h = priv->ae_handle; |
| |
| if (h->phy_dev) { |
| if (h->phy_if != PHY_INTERFACE_MODE_XGMII) |
| return; |
| |
| (void)genphy_read_status(h->phy_dev); |
| } |
| hns_nic_adjust_link(netdev); |
| } |
| |
| /* for dumping key regs*/ |
| static void hns_nic_dump(struct hns_nic_priv *priv) |
| { |
| struct hnae_handle *h = priv->ae_handle; |
| struct hnae_ae_ops *ops = h->dev->ops; |
| u32 *data, reg_num, i; |
| |
| if (ops->get_regs_len && ops->get_regs) { |
| reg_num = ops->get_regs_len(priv->ae_handle); |
| reg_num = (reg_num + 3ul) & ~3ul; |
| data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL); |
| if (data) { |
| ops->get_regs(priv->ae_handle, data); |
| for (i = 0; i < reg_num; i += 4) |
| pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n", |
| i, data[i], data[i + 1], |
| data[i + 2], data[i + 3]); |
| kfree(data); |
| } |
| } |
| |
| for (i = 0; i < h->q_num; i++) { |
| pr_info("tx_queue%d_next_to_clean:%d\n", |
| i, h->qs[i]->tx_ring.next_to_clean); |
| pr_info("tx_queue%d_next_to_use:%d\n", |
| i, h->qs[i]->tx_ring.next_to_use); |
| pr_info("rx_queue%d_next_to_clean:%d\n", |
| i, h->qs[i]->rx_ring.next_to_clean); |
| pr_info("rx_queue%d_next_to_use:%d\n", |
| i, h->qs[i]->rx_ring.next_to_use); |
| } |
| } |
| |
| /* for resetting subtask */ |
| static void hns_nic_reset_subtask(struct hns_nic_priv *priv) |
| { |
| enum hnae_port_type type = priv->ae_handle->port_type; |
| |
| if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state)) |
| return; |
| clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state); |
| |
| /* If we're already down, removing or resetting, just bail */ |
| if (test_bit(NIC_STATE_DOWN, &priv->state) || |
| test_bit(NIC_STATE_REMOVING, &priv->state) || |
| test_bit(NIC_STATE_RESETTING, &priv->state)) |
| return; |
| |
| hns_nic_dump(priv); |
| netdev_info(priv->netdev, "try to reset %s port!\n", |
| (type == HNAE_PORT_DEBUG ? "debug" : "service")); |
| |
| rtnl_lock(); |
| /* put off any impending NetWatchDogTimeout */ |
| netif_trans_update(priv->netdev); |
| hns_nic_net_reinit(priv->netdev); |
| |
| rtnl_unlock(); |
| } |
| |
| /* for doing service complete*/ |
| static void hns_nic_service_event_complete(struct hns_nic_priv *priv) |
| { |
| WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state)); |
| /* make sure to commit the things */ |
| smp_mb__before_atomic(); |
| clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state); |
| } |
| |
| static void hns_nic_service_task(struct work_struct *work) |
| { |
| struct hns_nic_priv *priv |
| = container_of(work, struct hns_nic_priv, service_task); |
| struct hnae_handle *h = priv->ae_handle; |
| |
| hns_nic_reset_subtask(priv); |
| hns_nic_update_link_status(priv->netdev); |
| h->dev->ops->update_led_status(h); |
| hns_nic_update_stats(priv->netdev); |
| |
| hns_nic_service_event_complete(priv); |
| } |
| |
| static void hns_nic_task_schedule(struct hns_nic_priv *priv) |
| { |
| if (!test_bit(NIC_STATE_DOWN, &priv->state) && |
| !test_bit(NIC_STATE_REMOVING, &priv->state) && |
| !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state)) |
| (void)schedule_work(&priv->service_task); |
| } |
| |
| static void hns_nic_service_timer(struct timer_list *t) |
| { |
| struct hns_nic_priv *priv = from_timer(priv, t, service_timer); |
| |
| (void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ); |
| |
| hns_nic_task_schedule(priv); |
| } |
| |
| /** |
| * hns_tx_timeout_reset - initiate reset due to Tx timeout |
| * @priv: driver private struct |
| **/ |
| static void hns_tx_timeout_reset(struct hns_nic_priv *priv) |
| { |
| /* Do the reset outside of interrupt context */ |
| if (!test_bit(NIC_STATE_DOWN, &priv->state)) { |
| set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state); |
| netdev_warn(priv->netdev, |
| "initiating reset due to tx timeout(%llu,0x%lx)\n", |
| priv->tx_timeout_count, priv->state); |
| priv->tx_timeout_count++; |
| hns_nic_task_schedule(priv); |
| } |
| } |
| |
| static int hns_nic_init_ring_data(struct hns_nic_priv *priv) |
| { |
| struct hnae_handle *h = priv->ae_handle; |
| struct hns_nic_ring_data *rd; |
| bool is_ver1 = AE_IS_VER1(priv->enet_ver); |
| int i; |
| |
| if (h->q_num > NIC_MAX_Q_PER_VF) { |
| netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num); |
| return -EINVAL; |
| } |
| |
| priv->ring_data = kzalloc(array3_size(h->q_num, |
| sizeof(*priv->ring_data), 2), |
| GFP_KERNEL); |
| if (!priv->ring_data) |
| return -ENOMEM; |
| |
| for (i = 0; i < h->q_num; i++) { |
| rd = &priv->ring_data[i]; |
| rd->queue_index = i; |
| rd->ring = &h->qs[i]->tx_ring; |
| rd->poll_one = hns_nic_tx_poll_one; |
| rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro : |
| hns_nic_tx_fini_pro_v2; |
| |
| netif_napi_add(priv->netdev, &rd->napi, hns_nic_common_poll); |
| rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED; |
| } |
| for (i = h->q_num; i < h->q_num * 2; i++) { |
| rd = &priv->ring_data[i]; |
| rd->queue_index = i - h->q_num; |
| rd->ring = &h->qs[i - h->q_num]->rx_ring; |
| rd->poll_one = hns_nic_rx_poll_one; |
| rd->ex_process = hns_nic_rx_up_pro; |
| rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro : |
| hns_nic_rx_fini_pro_v2; |
| |
| netif_napi_add(priv->netdev, &rd->napi, hns_nic_common_poll); |
| rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED; |
| } |
| |
| return 0; |
| } |
| |
| static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv) |
| { |
| struct hnae_handle *h = priv->ae_handle; |
| int i; |
| |
| for (i = 0; i < h->q_num * 2; i++) { |
| netif_napi_del(&priv->ring_data[i].napi); |
| if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) { |
| (void)irq_set_affinity_hint( |
| priv->ring_data[i].ring->irq, |
| NULL); |
| free_irq(priv->ring_data[i].ring->irq, |
| &priv->ring_data[i]); |
| } |
| |
| priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED; |
| } |
| kfree(priv->ring_data); |
| } |
| |
| static void hns_nic_set_priv_ops(struct net_device *netdev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(netdev); |
| struct hnae_handle *h = priv->ae_handle; |
| |
| if (AE_IS_VER1(priv->enet_ver)) { |
| priv->ops.fill_desc = fill_desc; |
| priv->ops.get_rxd_bnum = get_rx_desc_bnum; |
| priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx; |
| } else { |
| priv->ops.get_rxd_bnum = get_v2rx_desc_bnum; |
| if ((netdev->features & NETIF_F_TSO) || |
| (netdev->features & NETIF_F_TSO6)) { |
| priv->ops.fill_desc = fill_tso_desc; |
| priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso; |
| /* This chip only support 7*4096 */ |
| netif_set_tso_max_size(netdev, 7 * 4096); |
| } else { |
| priv->ops.fill_desc = fill_v2_desc; |
| priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx; |
| } |
| /* enable tso when init |
| * control tso on/off through TSE bit in bd |
| */ |
| h->dev->ops->set_tso_stats(h, 1); |
| } |
| } |
| |
| static int hns_nic_try_get_ae(struct net_device *ndev) |
| { |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| struct hnae_handle *h; |
| int ret; |
| |
| h = hnae_get_handle(&priv->netdev->dev, |
| priv->fwnode, priv->port_id, NULL); |
| if (IS_ERR_OR_NULL(h)) { |
| ret = -ENODEV; |
| dev_dbg(priv->dev, "has not handle, register notifier!\n"); |
| goto out; |
| } |
| priv->ae_handle = h; |
| |
| ret = hns_nic_init_phy(ndev, h); |
| if (ret) { |
| dev_err(priv->dev, "probe phy device fail!\n"); |
| goto out_init_phy; |
| } |
| |
| ret = hns_nic_init_ring_data(priv); |
| if (ret) { |
| ret = -ENOMEM; |
| goto out_init_ring_data; |
| } |
| |
| hns_nic_set_priv_ops(ndev); |
| |
| ret = register_netdev(ndev); |
| if (ret) { |
| dev_err(priv->dev, "probe register netdev fail!\n"); |
| goto out_reg_ndev_fail; |
| } |
| return 0; |
| |
| out_reg_ndev_fail: |
| hns_nic_uninit_ring_data(priv); |
| priv->ring_data = NULL; |
| out_init_phy: |
| out_init_ring_data: |
| hnae_put_handle(priv->ae_handle); |
| priv->ae_handle = NULL; |
| out: |
| return ret; |
| } |
| |
| static int hns_nic_notifier_action(struct notifier_block *nb, |
| unsigned long action, void *data) |
| { |
| struct hns_nic_priv *priv = |
| container_of(nb, struct hns_nic_priv, notifier_block); |
| |
| assert(action == HNAE_AE_REGISTER); |
| |
| if (!hns_nic_try_get_ae(priv->netdev)) { |
| hnae_unregister_notifier(&priv->notifier_block); |
| priv->notifier_block.notifier_call = NULL; |
| } |
| return 0; |
| } |
| |
| static int hns_nic_dev_probe(struct platform_device *pdev) |
| { |
| struct device *dev = &pdev->dev; |
| struct net_device *ndev; |
| struct hns_nic_priv *priv; |
| u32 port_id; |
| int ret; |
| |
| ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF); |
| if (!ndev) |
| return -ENOMEM; |
| |
| platform_set_drvdata(pdev, ndev); |
| |
| priv = netdev_priv(ndev); |
| priv->dev = dev; |
| priv->netdev = ndev; |
| |
| if (dev_of_node(dev)) { |
| struct device_node *ae_node; |
| |
| if (of_device_is_compatible(dev->of_node, |
| "hisilicon,hns-nic-v1")) |
| priv->enet_ver = AE_VERSION_1; |
| else |
| priv->enet_ver = AE_VERSION_2; |
| |
| ae_node = of_parse_phandle(dev->of_node, "ae-handle", 0); |
| if (!ae_node) { |
| ret = -ENODEV; |
| dev_err(dev, "not find ae-handle\n"); |
| goto out_read_prop_fail; |
| } |
| priv->fwnode = &ae_node->fwnode; |
| } else if (is_acpi_node(dev->fwnode)) { |
| struct fwnode_reference_args args; |
| |
| if (acpi_dev_found(hns_enet_acpi_match[0].id)) |
| priv->enet_ver = AE_VERSION_1; |
| else if (acpi_dev_found(hns_enet_acpi_match[1].id)) |
| priv->enet_ver = AE_VERSION_2; |
| else { |
| ret = -ENXIO; |
| goto out_read_prop_fail; |
| } |
| |
| /* try to find port-idx-in-ae first */ |
| ret = acpi_node_get_property_reference(dev->fwnode, |
| "ae-handle", 0, &args); |
| if (ret) { |
| dev_err(dev, "not find ae-handle\n"); |
| goto out_read_prop_fail; |
| } |
| if (!is_acpi_device_node(args.fwnode)) { |
| ret = -EINVAL; |
| goto out_read_prop_fail; |
| } |
| priv->fwnode = args.fwnode; |
| } else { |
| dev_err(dev, "cannot read cfg data from OF or acpi\n"); |
| ret = -ENXIO; |
| goto out_read_prop_fail; |
| } |
| |
| ret = device_property_read_u32(dev, "port-idx-in-ae", &port_id); |
| if (ret) { |
| /* only for old code compatible */ |
| ret = device_property_read_u32(dev, "port-id", &port_id); |
| if (ret) |
| goto out_read_prop_fail; |
| /* for old dts, we need to caculate the port offset */ |
| port_id = port_id < HNS_SRV_OFFSET ? port_id + HNS_DEBUG_OFFSET |
| : port_id - HNS_SRV_OFFSET; |
| } |
| priv->port_id = port_id; |
| |
| hns_init_mac_addr(ndev); |
| |
| ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT; |
| ndev->priv_flags |= IFF_UNICAST_FLT; |
| ndev->netdev_ops = &hns_nic_netdev_ops; |
| hns_ethtool_set_ops(ndev); |
| |
| ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
| NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | |
| NETIF_F_GRO; |
| ndev->vlan_features |= |
| NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM; |
| ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO; |
| |
| /* MTU range: 68 - 9578 (v1) or 9706 (v2) */ |
| ndev->min_mtu = MAC_MIN_MTU; |
| switch (priv->enet_ver) { |
| case AE_VERSION_2: |
| ndev->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_NTUPLE; |
| ndev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
| NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO | |
| NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6; |
| ndev->vlan_features |= NETIF_F_TSO | NETIF_F_TSO6; |
| ndev->max_mtu = MAC_MAX_MTU_V2 - |
| (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); |
| break; |
| default: |
| ndev->max_mtu = MAC_MAX_MTU - |
| (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); |
| break; |
| } |
| |
| SET_NETDEV_DEV(ndev, dev); |
| |
| if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64))) |
| dev_dbg(dev, "set mask to 64bit\n"); |
| else |
| dev_err(dev, "set mask to 64bit fail!\n"); |
| |
| /* carrier off reporting is important to ethtool even BEFORE open */ |
| netif_carrier_off(ndev); |
| |
| timer_setup(&priv->service_timer, hns_nic_service_timer, 0); |
| INIT_WORK(&priv->service_task, hns_nic_service_task); |
| |
| set_bit(NIC_STATE_SERVICE_INITED, &priv->state); |
| clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state); |
| set_bit(NIC_STATE_DOWN, &priv->state); |
| |
| if (hns_nic_try_get_ae(priv->netdev)) { |
| priv->notifier_block.notifier_call = hns_nic_notifier_action; |
| ret = hnae_register_notifier(&priv->notifier_block); |
| if (ret) { |
| dev_err(dev, "register notifier fail!\n"); |
| goto out_notify_fail; |
| } |
| dev_dbg(dev, "has not handle, register notifier!\n"); |
| } |
| |
| return 0; |
| |
| out_notify_fail: |
| (void)cancel_work_sync(&priv->service_task); |
| out_read_prop_fail: |
| /* safe for ACPI FW */ |
| of_node_put(to_of_node(priv->fwnode)); |
| free_netdev(ndev); |
| return ret; |
| } |
| |
| static int hns_nic_dev_remove(struct platform_device *pdev) |
| { |
| struct net_device *ndev = platform_get_drvdata(pdev); |
| struct hns_nic_priv *priv = netdev_priv(ndev); |
| |
| if (ndev->reg_state != NETREG_UNINITIALIZED) |
| unregister_netdev(ndev); |
| |
| if (priv->ring_data) |
| hns_nic_uninit_ring_data(priv); |
| priv->ring_data = NULL; |
| |
| if (ndev->phydev) |
| phy_disconnect(ndev->phydev); |
| |
| if (!IS_ERR_OR_NULL(priv->ae_handle)) |
| hnae_put_handle(priv->ae_handle); |
| priv->ae_handle = NULL; |
| if (priv->notifier_block.notifier_call) |
| hnae_unregister_notifier(&priv->notifier_block); |
| priv->notifier_block.notifier_call = NULL; |
| |
| set_bit(NIC_STATE_REMOVING, &priv->state); |
| (void)cancel_work_sync(&priv->service_task); |
| |
| /* safe for ACPI FW */ |
| of_node_put(to_of_node(priv->fwnode)); |
| |
| free_netdev(ndev); |
| return 0; |
| } |
| |
| static const struct of_device_id hns_enet_of_match[] = { |
| {.compatible = "hisilicon,hns-nic-v1",}, |
| {.compatible = "hisilicon,hns-nic-v2",}, |
| {}, |
| }; |
| |
| MODULE_DEVICE_TABLE(of, hns_enet_of_match); |
| |
| static struct platform_driver hns_nic_dev_driver = { |
| .driver = { |
| .name = "hns-nic", |
| .of_match_table = hns_enet_of_match, |
| .acpi_match_table = ACPI_PTR(hns_enet_acpi_match), |
| }, |
| .probe = hns_nic_dev_probe, |
| .remove = hns_nic_dev_remove, |
| }; |
| |
| module_platform_driver(hns_nic_dev_driver); |
| |
| MODULE_DESCRIPTION("HISILICON HNS Ethernet driver"); |
| MODULE_AUTHOR("Hisilicon, Inc."); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:hns-nic"); |