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2446 lines
62 KiB
2446 lines
62 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (c) 2014-2015 Hisilicon Limited. |
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*/ |
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|
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#include <linux/clk.h> |
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#include <linux/cpumask.h> |
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#include <linux/etherdevice.h> |
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#include <linux/if_vlan.h> |
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#include <linux/interrupt.h> |
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#include <linux/io.h> |
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#include <linux/ip.h> |
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#include <linux/ipv6.h> |
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#include <linux/irq.h> |
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#include <linux/module.h> |
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#include <linux/phy.h> |
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#include <linux/platform_device.h> |
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#include <linux/skbuff.h> |
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#include "hnae.h" |
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#include "hns_enet.h" |
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#include "hns_dsaf_mac.h" |
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|
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#define NIC_MAX_Q_PER_VF 16 |
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#define HNS_NIC_TX_TIMEOUT (5 * HZ) |
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#define SERVICE_TIMER_HZ (1 * HZ) |
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#define RCB_IRQ_NOT_INITED 0 |
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#define RCB_IRQ_INITED 1 |
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#define HNS_BUFFER_SIZE_2048 2048 |
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|
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#define BD_MAX_SEND_SIZE 8191 |
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#define SKB_TMP_LEN(SKB) \ |
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(((SKB)->transport_header - (SKB)->mac_header) + tcp_hdrlen(SKB)) |
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|
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static void fill_v2_desc_hw(struct hnae_ring *ring, void *priv, int size, |
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int send_sz, dma_addr_t dma, int frag_end, |
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int buf_num, enum hns_desc_type type, int mtu) |
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{ |
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struct hnae_desc *desc = &ring->desc[ring->next_to_use]; |
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struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; |
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struct iphdr *iphdr; |
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struct ipv6hdr *ipv6hdr; |
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struct sk_buff *skb; |
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__be16 protocol; |
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u8 bn_pid = 0; |
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u8 rrcfv = 0; |
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u8 ip_offset = 0; |
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u8 tvsvsn = 0; |
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u16 mss = 0; |
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u8 l4_len = 0; |
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u16 paylen = 0; |
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|
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desc_cb->priv = priv; |
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desc_cb->length = size; |
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desc_cb->dma = dma; |
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desc_cb->type = type; |
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|
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desc->addr = cpu_to_le64(dma); |
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desc->tx.send_size = cpu_to_le16((u16)send_sz); |
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/* config bd buffer end */ |
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hnae_set_bit(rrcfv, HNSV2_TXD_VLD_B, 1); |
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hnae_set_field(bn_pid, HNSV2_TXD_BUFNUM_M, 0, buf_num - 1); |
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/* fill port_id in the tx bd for sending management pkts */ |
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hnae_set_field(bn_pid, HNSV2_TXD_PORTID_M, |
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HNSV2_TXD_PORTID_S, ring->q->handle->dport_id); |
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|
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if (type == DESC_TYPE_SKB) { |
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skb = (struct sk_buff *)priv; |
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|
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if (skb->ip_summed == CHECKSUM_PARTIAL) { |
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skb_reset_mac_len(skb); |
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protocol = skb->protocol; |
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ip_offset = ETH_HLEN; |
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|
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if (protocol == htons(ETH_P_8021Q)) { |
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ip_offset += VLAN_HLEN; |
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protocol = vlan_get_protocol(skb); |
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skb->protocol = protocol; |
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} |
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if (skb->protocol == htons(ETH_P_IP)) { |
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iphdr = ip_hdr(skb); |
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hnae_set_bit(rrcfv, HNSV2_TXD_L3CS_B, 1); |
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hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1); |
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|
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/* check for tcp/udp header */ |
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if (iphdr->protocol == IPPROTO_TCP && |
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skb_is_gso(skb)) { |
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hnae_set_bit(tvsvsn, |
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HNSV2_TXD_TSE_B, 1); |
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l4_len = tcp_hdrlen(skb); |
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mss = skb_shinfo(skb)->gso_size; |
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paylen = skb->len - SKB_TMP_LEN(skb); |
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} |
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} else if (skb->protocol == htons(ETH_P_IPV6)) { |
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hnae_set_bit(tvsvsn, HNSV2_TXD_IPV6_B, 1); |
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ipv6hdr = ipv6_hdr(skb); |
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hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1); |
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|
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/* check for tcp/udp header */ |
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if (ipv6hdr->nexthdr == IPPROTO_TCP && |
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skb_is_gso(skb) && skb_is_gso_v6(skb)) { |
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hnae_set_bit(tvsvsn, |
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HNSV2_TXD_TSE_B, 1); |
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l4_len = tcp_hdrlen(skb); |
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mss = skb_shinfo(skb)->gso_size; |
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paylen = skb->len - SKB_TMP_LEN(skb); |
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} |
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} |
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desc->tx.ip_offset = ip_offset; |
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desc->tx.tse_vlan_snap_v6_sctp_nth = tvsvsn; |
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desc->tx.mss = cpu_to_le16(mss); |
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desc->tx.l4_len = l4_len; |
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desc->tx.paylen = cpu_to_le16(paylen); |
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} |
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} |
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hnae_set_bit(rrcfv, HNSV2_TXD_FE_B, frag_end); |
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desc->tx.bn_pid = bn_pid; |
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desc->tx.ra_ri_cs_fe_vld = rrcfv; |
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ring_ptr_move_fw(ring, next_to_use); |
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} |
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static void fill_v2_desc(struct hnae_ring *ring, void *priv, |
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int size, dma_addr_t dma, int frag_end, |
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int buf_num, enum hns_desc_type type, int mtu) |
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{ |
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fill_v2_desc_hw(ring, priv, size, size, dma, frag_end, |
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buf_num, type, mtu); |
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} |
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static const struct acpi_device_id hns_enet_acpi_match[] = { |
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{ "HISI00C1", 0 }, |
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{ "HISI00C2", 0 }, |
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{ }, |
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}; |
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MODULE_DEVICE_TABLE(acpi, hns_enet_acpi_match); |
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|
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static void fill_desc(struct hnae_ring *ring, void *priv, |
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int size, dma_addr_t dma, int frag_end, |
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int buf_num, enum hns_desc_type type, int mtu) |
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{ |
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struct hnae_desc *desc = &ring->desc[ring->next_to_use]; |
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struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; |
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struct sk_buff *skb; |
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__be16 protocol; |
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u32 ip_offset; |
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u32 asid_bufnum_pid = 0; |
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u32 flag_ipoffset = 0; |
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desc_cb->priv = priv; |
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desc_cb->length = size; |
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desc_cb->dma = dma; |
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desc_cb->type = type; |
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desc->addr = cpu_to_le64(dma); |
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desc->tx.send_size = cpu_to_le16((u16)size); |
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/*config bd buffer end */ |
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flag_ipoffset |= 1 << HNS_TXD_VLD_B; |
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asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S; |
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if (type == DESC_TYPE_SKB) { |
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skb = (struct sk_buff *)priv; |
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|
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if (skb->ip_summed == CHECKSUM_PARTIAL) { |
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protocol = skb->protocol; |
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ip_offset = ETH_HLEN; |
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|
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/*if it is a SW VLAN check the next protocol*/ |
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if (protocol == htons(ETH_P_8021Q)) { |
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ip_offset += VLAN_HLEN; |
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protocol = vlan_get_protocol(skb); |
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skb->protocol = protocol; |
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} |
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if (skb->protocol == htons(ETH_P_IP)) { |
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flag_ipoffset |= 1 << HNS_TXD_L3CS_B; |
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/* check for tcp/udp header */ |
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flag_ipoffset |= 1 << HNS_TXD_L4CS_B; |
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|
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} else if (skb->protocol == htons(ETH_P_IPV6)) { |
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/* ipv6 has not l3 cs, check for L4 header */ |
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flag_ipoffset |= 1 << HNS_TXD_L4CS_B; |
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} |
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flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S; |
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} |
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} |
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flag_ipoffset |= frag_end << HNS_TXD_FE_B; |
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desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid); |
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desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset); |
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ring_ptr_move_fw(ring, next_to_use); |
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} |
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|
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static void unfill_desc(struct hnae_ring *ring) |
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{ |
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ring_ptr_move_bw(ring, next_to_use); |
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} |
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static int hns_nic_maybe_stop_tx( |
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struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring) |
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{ |
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struct sk_buff *skb = *out_skb; |
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struct sk_buff *new_skb = NULL; |
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int buf_num; |
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|
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/* no. of segments (plus a header) */ |
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buf_num = skb_shinfo(skb)->nr_frags + 1; |
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|
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if (unlikely(buf_num > ring->max_desc_num_per_pkt)) { |
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if (ring_space(ring) < 1) |
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return -EBUSY; |
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new_skb = skb_copy(skb, GFP_ATOMIC); |
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if (!new_skb) |
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return -ENOMEM; |
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dev_kfree_skb_any(skb); |
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*out_skb = new_skb; |
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buf_num = 1; |
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} else if (buf_num > ring_space(ring)) { |
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return -EBUSY; |
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} |
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*bnum = buf_num; |
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return 0; |
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} |
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static int hns_nic_maybe_stop_tso( |
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struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring) |
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{ |
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int i; |
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int size; |
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int buf_num; |
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int frag_num; |
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struct sk_buff *skb = *out_skb; |
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struct sk_buff *new_skb = NULL; |
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skb_frag_t *frag; |
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|
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size = skb_headlen(skb); |
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buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; |
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frag_num = skb_shinfo(skb)->nr_frags; |
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for (i = 0; i < frag_num; i++) { |
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frag = &skb_shinfo(skb)->frags[i]; |
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size = skb_frag_size(frag); |
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buf_num += (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; |
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} |
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if (unlikely(buf_num > ring->max_desc_num_per_pkt)) { |
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buf_num = (skb->len + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; |
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if (ring_space(ring) < buf_num) |
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return -EBUSY; |
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/* manual split the send packet */ |
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new_skb = skb_copy(skb, GFP_ATOMIC); |
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if (!new_skb) |
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return -ENOMEM; |
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dev_kfree_skb_any(skb); |
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*out_skb = new_skb; |
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|
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} else if (ring_space(ring) < buf_num) { |
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return -EBUSY; |
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} |
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*bnum = buf_num; |
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return 0; |
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} |
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static void fill_tso_desc(struct hnae_ring *ring, void *priv, |
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int size, dma_addr_t dma, int frag_end, |
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int buf_num, enum hns_desc_type type, int mtu) |
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{ |
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int frag_buf_num; |
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int sizeoflast; |
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int k; |
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frag_buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE; |
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sizeoflast = size % BD_MAX_SEND_SIZE; |
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sizeoflast = sizeoflast ? sizeoflast : BD_MAX_SEND_SIZE; |
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/* when the frag size is bigger than hardware, split this frag */ |
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for (k = 0; k < frag_buf_num; k++) |
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fill_v2_desc_hw(ring, priv, k == 0 ? size : 0, |
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(k == frag_buf_num - 1) ? |
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sizeoflast : BD_MAX_SEND_SIZE, |
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dma + BD_MAX_SEND_SIZE * k, |
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frag_end && (k == frag_buf_num - 1) ? 1 : 0, |
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buf_num, |
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(type == DESC_TYPE_SKB && !k) ? |
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DESC_TYPE_SKB : DESC_TYPE_PAGE, |
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mtu); |
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} |
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netdev_tx_t hns_nic_net_xmit_hw(struct net_device *ndev, |
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struct sk_buff *skb, |
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struct hns_nic_ring_data *ring_data) |
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{ |
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struct hns_nic_priv *priv = netdev_priv(ndev); |
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struct hnae_ring *ring = ring_data->ring; |
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struct device *dev = ring_to_dev(ring); |
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struct netdev_queue *dev_queue; |
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skb_frag_t *frag; |
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int buf_num; |
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int seg_num; |
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dma_addr_t dma; |
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int size, next_to_use; |
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int i; |
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|
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switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) { |
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case -EBUSY: |
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ring->stats.tx_busy++; |
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goto out_net_tx_busy; |
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case -ENOMEM: |
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ring->stats.sw_err_cnt++; |
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netdev_err(ndev, "no memory to xmit!\n"); |
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goto out_err_tx_ok; |
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default: |
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break; |
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} |
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|
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/* no. of segments (plus a header) */ |
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seg_num = skb_shinfo(skb)->nr_frags + 1; |
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next_to_use = ring->next_to_use; |
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/* fill the first part */ |
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size = skb_headlen(skb); |
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dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE); |
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if (dma_mapping_error(dev, dma)) { |
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netdev_err(ndev, "TX head DMA map failed\n"); |
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ring->stats.sw_err_cnt++; |
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goto out_err_tx_ok; |
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} |
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priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0, |
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buf_num, DESC_TYPE_SKB, ndev->mtu); |
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|
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/* fill the fragments */ |
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for (i = 1; i < seg_num; i++) { |
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frag = &skb_shinfo(skb)->frags[i - 1]; |
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size = skb_frag_size(frag); |
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dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE); |
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if (dma_mapping_error(dev, dma)) { |
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netdev_err(ndev, "TX frag(%d) DMA map failed\n", i); |
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ring->stats.sw_err_cnt++; |
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goto out_map_frag_fail; |
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} |
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priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma, |
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seg_num - 1 == i ? 1 : 0, buf_num, |
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DESC_TYPE_PAGE, ndev->mtu); |
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} |
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|
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/*complete translate all packets*/ |
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dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping); |
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netdev_tx_sent_queue(dev_queue, skb->len); |
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|
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netif_trans_update(ndev); |
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ndev->stats.tx_bytes += skb->len; |
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ndev->stats.tx_packets++; |
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wmb(); /* commit all data before submit */ |
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assert(skb->queue_mapping < priv->ae_handle->q_num); |
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hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num); |
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return NETDEV_TX_OK; |
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out_map_frag_fail: |
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|
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while (ring->next_to_use != next_to_use) { |
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unfill_desc(ring); |
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if (ring->next_to_use != next_to_use) |
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dma_unmap_page(dev, |
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ring->desc_cb[ring->next_to_use].dma, |
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ring->desc_cb[ring->next_to_use].length, |
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DMA_TO_DEVICE); |
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else |
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dma_unmap_single(dev, |
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ring->desc_cb[next_to_use].dma, |
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ring->desc_cb[next_to_use].length, |
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DMA_TO_DEVICE); |
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} |
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out_err_tx_ok: |
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|
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dev_kfree_skb_any(skb); |
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return NETDEV_TX_OK; |
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|
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out_net_tx_busy: |
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|
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netif_stop_subqueue(ndev, skb->queue_mapping); |
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|
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/* Herbert's original patch had: |
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* smp_mb__after_netif_stop_queue(); |
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* but since that doesn't exist yet, just open code it. |
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*/ |
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smp_mb(); |
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return NETDEV_TX_BUSY; |
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} |
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static void hns_nic_reuse_page(struct sk_buff *skb, int i, |
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struct hnae_ring *ring, int pull_len, |
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struct hnae_desc_cb *desc_cb) |
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{ |
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struct hnae_desc *desc; |
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u32 truesize; |
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int size; |
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int last_offset; |
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bool twobufs; |
|
|
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twobufs = ((PAGE_SIZE < 8192) && |
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hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048); |
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|
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desc = &ring->desc[ring->next_to_clean]; |
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size = le16_to_cpu(desc->rx.size); |
|
|
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if (twobufs) { |
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truesize = hnae_buf_size(ring); |
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} else { |
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truesize = ALIGN(size, L1_CACHE_BYTES); |
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last_offset = hnae_page_size(ring) - hnae_buf_size(ring); |
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} |
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|
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skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len, |
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size - pull_len, truesize); |
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|
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/* avoid re-using remote pages,flag default unreuse */ |
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if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id())) |
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return; |
|
|
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if (twobufs) { |
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/* if we are only owner of page we can reuse it */ |
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if (likely(page_count(desc_cb->priv) == 1)) { |
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/* flip page offset to other buffer */ |
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desc_cb->page_offset ^= truesize; |
|
|
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desc_cb->reuse_flag = 1; |
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/* bump ref count on page before it is given*/ |
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get_page(desc_cb->priv); |
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} |
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return; |
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} |
|
|
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/* move offset up to the next cache line */ |
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desc_cb->page_offset += truesize; |
|
|
|
if (desc_cb->page_offset <= last_offset) { |
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desc_cb->reuse_flag = 1; |
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/* bump ref count on page before it is given*/ |
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get_page(desc_cb->priv); |
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} |
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} |
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|
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static void get_v2rx_desc_bnum(u32 bnum_flag, int *out_bnum) |
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{ |
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*out_bnum = hnae_get_field(bnum_flag, |
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HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S) + 1; |
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} |
|
|
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static void get_rx_desc_bnum(u32 bnum_flag, int *out_bnum) |
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{ |
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*out_bnum = hnae_get_field(bnum_flag, |
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HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S); |
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} |
|
|
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static void hns_nic_rx_checksum(struct hns_nic_ring_data *ring_data, |
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struct sk_buff *skb, u32 flag) |
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{ |
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struct net_device *netdev = ring_data->napi.dev; |
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u32 l3id; |
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u32 l4id; |
|
|
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/* check if RX checksum offload is enabled */ |
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if (unlikely(!(netdev->features & NETIF_F_RXCSUM))) |
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return; |
|
|
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/* In hardware, we only support checksum for the following protocols: |
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* 1) IPv4, |
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* 2) TCP(over IPv4 or IPv6), |
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* 3) UDP(over IPv4 or IPv6), |
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* 4) SCTP(over IPv4 or IPv6) |
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* but we support many L3(IPv4, IPv6, MPLS, PPPoE etc) and L4(TCP, |
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* UDP, GRE, SCTP, IGMP, ICMP etc.) protocols. |
|
* |
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* Hardware limitation: |
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* Our present hardware RX Descriptor lacks L3/L4 checksum "Status & |
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* Error" bit (which usually can be used to indicate whether checksum |
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* was calculated by the hardware and if there was any error encountered |
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* during checksum calculation). |
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* |
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* Software workaround: |
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* We do get info within the RX descriptor about the kind of L3/L4 |
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* protocol coming in the packet and the error status. These errors |
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* might not just be checksum errors but could be related to version, |
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* length of IPv4, UDP, TCP etc. |
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* 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. |
|
*/ |
|
|
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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_adp_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 = 0; |
|
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; |
|
} |
|
|
|
memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len); |
|
|
|
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_mac_address(priv->dev, ndev->dev_addr, ETH_ALEN)) { |
|
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; |
|
|
|
/* Diffrent irq banlance 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 < ndev->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 |
|
* recieving 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 orginal 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_gso_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 = 0; |
|
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_do_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, NAPI_POLL_WEIGHT); |
|
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, NAPI_POLL_WEIGHT); |
|
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_gso_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");
|
|
|