| /* |
| * Copyright (C) 2005 - 2009 ServerEngines |
| * All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License version 2 |
| * as published by the Free Software Foundation. The full GNU General |
| * Public License is included in this distribution in the file called COPYING. |
| * |
| * Contact Information: |
| * linux-drivers@serverengines.com |
| * |
| * ServerEngines |
| * 209 N. Fair Oaks Ave |
| * Sunnyvale, CA 94085 |
| */ |
| |
| #include "be.h" |
| #include "be_cmds.h" |
| #include <asm/div64.h> |
| |
| MODULE_VERSION(DRV_VER); |
| MODULE_DEVICE_TABLE(pci, be_dev_ids); |
| MODULE_DESCRIPTION(DRV_DESC " " DRV_VER); |
| MODULE_AUTHOR("ServerEngines Corporation"); |
| MODULE_LICENSE("GPL"); |
| |
| static unsigned int rx_frag_size = 2048; |
| module_param(rx_frag_size, uint, S_IRUGO); |
| MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data."); |
| |
| static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = { |
| { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) }, |
| { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) }, |
| { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) }, |
| { 0 } |
| }; |
| MODULE_DEVICE_TABLE(pci, be_dev_ids); |
| |
| static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q) |
| { |
| struct be_dma_mem *mem = &q->dma_mem; |
| if (mem->va) |
| pci_free_consistent(adapter->pdev, mem->size, |
| mem->va, mem->dma); |
| } |
| |
| static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q, |
| u16 len, u16 entry_size) |
| { |
| struct be_dma_mem *mem = &q->dma_mem; |
| |
| memset(q, 0, sizeof(*q)); |
| q->len = len; |
| q->entry_size = entry_size; |
| mem->size = len * entry_size; |
| mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma); |
| if (!mem->va) |
| return -1; |
| memset(mem->va, 0, mem->size); |
| return 0; |
| } |
| |
| static void be_intr_set(struct be_adapter *adapter, bool enable) |
| { |
| u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET; |
| u32 reg = ioread32(addr); |
| u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; |
| |
| if (!enabled && enable) |
| reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; |
| else if (enabled && !enable) |
| reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; |
| else |
| return; |
| |
| iowrite32(reg, addr); |
| } |
| |
| static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted) |
| { |
| u32 val = 0; |
| val |= qid & DB_RQ_RING_ID_MASK; |
| val |= posted << DB_RQ_NUM_POSTED_SHIFT; |
| iowrite32(val, adapter->db + DB_RQ_OFFSET); |
| } |
| |
| static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted) |
| { |
| u32 val = 0; |
| val |= qid & DB_TXULP_RING_ID_MASK; |
| val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT; |
| iowrite32(val, adapter->db + DB_TXULP1_OFFSET); |
| } |
| |
| static void be_eq_notify(struct be_adapter *adapter, u16 qid, |
| bool arm, bool clear_int, u16 num_popped) |
| { |
| u32 val = 0; |
| val |= qid & DB_EQ_RING_ID_MASK; |
| if (arm) |
| val |= 1 << DB_EQ_REARM_SHIFT; |
| if (clear_int) |
| val |= 1 << DB_EQ_CLR_SHIFT; |
| val |= 1 << DB_EQ_EVNT_SHIFT; |
| val |= num_popped << DB_EQ_NUM_POPPED_SHIFT; |
| iowrite32(val, adapter->db + DB_EQ_OFFSET); |
| } |
| |
| void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped) |
| { |
| u32 val = 0; |
| val |= qid & DB_CQ_RING_ID_MASK; |
| if (arm) |
| val |= 1 << DB_CQ_REARM_SHIFT; |
| val |= num_popped << DB_CQ_NUM_POPPED_SHIFT; |
| iowrite32(val, adapter->db + DB_CQ_OFFSET); |
| } |
| |
| |
| static int be_mac_addr_set(struct net_device *netdev, void *p) |
| { |
| struct be_adapter *adapter = netdev_priv(netdev); |
| struct sockaddr *addr = p; |
| int status = 0; |
| |
| if (netif_running(netdev)) { |
| status = be_cmd_pmac_del(adapter, adapter->if_handle, |
| adapter->pmac_id); |
| if (status) |
| return status; |
| |
| status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data, |
| adapter->if_handle, &adapter->pmac_id); |
| } |
| |
| if (!status) |
| memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
| |
| return status; |
| } |
| |
| static void netdev_stats_update(struct be_adapter *adapter) |
| { |
| struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va); |
| struct be_rxf_stats *rxf_stats = &hw_stats->rxf; |
| struct be_port_rxf_stats *port_stats = |
| &rxf_stats->port[adapter->port_num]; |
| struct net_device_stats *dev_stats = &adapter->stats.net_stats; |
| struct be_erx_stats *erx_stats = &hw_stats->erx; |
| |
| dev_stats->rx_packets = port_stats->rx_total_frames; |
| dev_stats->tx_packets = port_stats->tx_unicastframes + |
| port_stats->tx_multicastframes + port_stats->tx_broadcastframes; |
| dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 | |
| (u64) port_stats->rx_bytes_lsd; |
| dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 | |
| (u64) port_stats->tx_bytes_lsd; |
| |
| /* bad pkts received */ |
| dev_stats->rx_errors = port_stats->rx_crc_errors + |
| port_stats->rx_alignment_symbol_errors + |
| port_stats->rx_in_range_errors + |
| port_stats->rx_out_range_errors + |
| port_stats->rx_frame_too_long + |
| port_stats->rx_dropped_too_small + |
| port_stats->rx_dropped_too_short + |
| port_stats->rx_dropped_header_too_small + |
| port_stats->rx_dropped_tcp_length + |
| port_stats->rx_dropped_runt + |
| port_stats->rx_tcp_checksum_errs + |
| port_stats->rx_ip_checksum_errs + |
| port_stats->rx_udp_checksum_errs; |
| |
| /* no space in linux buffers: best possible approximation */ |
| dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0]; |
| |
| /* detailed rx errors */ |
| dev_stats->rx_length_errors = port_stats->rx_in_range_errors + |
| port_stats->rx_out_range_errors + |
| port_stats->rx_frame_too_long; |
| |
| /* receive ring buffer overflow */ |
| dev_stats->rx_over_errors = 0; |
| |
| dev_stats->rx_crc_errors = port_stats->rx_crc_errors; |
| |
| /* frame alignment errors */ |
| dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors; |
| |
| /* receiver fifo overrun */ |
| /* drops_no_pbuf is no per i/f, it's per BE card */ |
| dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow + |
| port_stats->rx_input_fifo_overflow + |
| rxf_stats->rx_drops_no_pbuf; |
| /* receiver missed packetd */ |
| dev_stats->rx_missed_errors = 0; |
| |
| /* packet transmit problems */ |
| dev_stats->tx_errors = 0; |
| |
| /* no space available in linux */ |
| dev_stats->tx_dropped = 0; |
| |
| dev_stats->multicast = port_stats->tx_multicastframes; |
| dev_stats->collisions = 0; |
| |
| /* detailed tx_errors */ |
| dev_stats->tx_aborted_errors = 0; |
| dev_stats->tx_carrier_errors = 0; |
| dev_stats->tx_fifo_errors = 0; |
| dev_stats->tx_heartbeat_errors = 0; |
| dev_stats->tx_window_errors = 0; |
| } |
| |
| void be_link_status_update(struct be_adapter *adapter, bool link_up) |
| { |
| struct net_device *netdev = adapter->netdev; |
| |
| /* If link came up or went down */ |
| if (adapter->link_up != link_up) { |
| if (link_up) { |
| netif_start_queue(netdev); |
| netif_carrier_on(netdev); |
| printk(KERN_INFO "%s: Link up\n", netdev->name); |
| } else { |
| netif_stop_queue(netdev); |
| netif_carrier_off(netdev); |
| printk(KERN_INFO "%s: Link down\n", netdev->name); |
| } |
| adapter->link_up = link_up; |
| } |
| } |
| |
| /* Update the EQ delay n BE based on the RX frags consumed / sec */ |
| static void be_rx_eqd_update(struct be_adapter *adapter) |
| { |
| struct be_eq_obj *rx_eq = &adapter->rx_eq; |
| struct be_drvr_stats *stats = &adapter->stats.drvr_stats; |
| ulong now = jiffies; |
| u32 eqd; |
| |
| if (!rx_eq->enable_aic) |
| return; |
| |
| /* Wrapped around */ |
| if (time_before(now, stats->rx_fps_jiffies)) { |
| stats->rx_fps_jiffies = now; |
| return; |
| } |
| |
| /* Update once a second */ |
| if ((now - stats->rx_fps_jiffies) < HZ) |
| return; |
| |
| stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) / |
| ((now - stats->rx_fps_jiffies) / HZ); |
| |
| stats->rx_fps_jiffies = now; |
| stats->be_prev_rx_frags = stats->be_rx_frags; |
| eqd = stats->be_rx_fps / 110000; |
| eqd = eqd << 3; |
| if (eqd > rx_eq->max_eqd) |
| eqd = rx_eq->max_eqd; |
| if (eqd < rx_eq->min_eqd) |
| eqd = rx_eq->min_eqd; |
| if (eqd < 10) |
| eqd = 0; |
| if (eqd != rx_eq->cur_eqd) |
| be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd); |
| |
| rx_eq->cur_eqd = eqd; |
| } |
| |
| static struct net_device_stats *be_get_stats(struct net_device *dev) |
| { |
| struct be_adapter *adapter = netdev_priv(dev); |
| |
| return &adapter->stats.net_stats; |
| } |
| |
| static u32 be_calc_rate(u64 bytes, unsigned long ticks) |
| { |
| u64 rate = bytes; |
| |
| do_div(rate, ticks / HZ); |
| rate <<= 3; /* bytes/sec -> bits/sec */ |
| do_div(rate, 1000000ul); /* MB/Sec */ |
| |
| return rate; |
| } |
| |
| static void be_tx_rate_update(struct be_adapter *adapter) |
| { |
| struct be_drvr_stats *stats = drvr_stats(adapter); |
| ulong now = jiffies; |
| |
| /* Wrapped around? */ |
| if (time_before(now, stats->be_tx_jiffies)) { |
| stats->be_tx_jiffies = now; |
| return; |
| } |
| |
| /* Update tx rate once in two seconds */ |
| if ((now - stats->be_tx_jiffies) > 2 * HZ) { |
| stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes |
| - stats->be_tx_bytes_prev, |
| now - stats->be_tx_jiffies); |
| stats->be_tx_jiffies = now; |
| stats->be_tx_bytes_prev = stats->be_tx_bytes; |
| } |
| } |
| |
| static void be_tx_stats_update(struct be_adapter *adapter, |
| u32 wrb_cnt, u32 copied, bool stopped) |
| { |
| struct be_drvr_stats *stats = drvr_stats(adapter); |
| stats->be_tx_reqs++; |
| stats->be_tx_wrbs += wrb_cnt; |
| stats->be_tx_bytes += copied; |
| if (stopped) |
| stats->be_tx_stops++; |
| } |
| |
| /* Determine number of WRB entries needed to xmit data in an skb */ |
| static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy) |
| { |
| int cnt = (skb->len > skb->data_len); |
| |
| cnt += skb_shinfo(skb)->nr_frags; |
| |
| /* to account for hdr wrb */ |
| cnt++; |
| if (cnt & 1) { |
| /* add a dummy to make it an even num */ |
| cnt++; |
| *dummy = true; |
| } else |
| *dummy = false; |
| BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT); |
| return cnt; |
| } |
| |
| static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len) |
| { |
| wrb->frag_pa_hi = upper_32_bits(addr); |
| wrb->frag_pa_lo = addr & 0xFFFFFFFF; |
| wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK; |
| } |
| |
| static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb, |
| bool vlan, u32 wrb_cnt, u32 len) |
| { |
| memset(hdr, 0, sizeof(*hdr)); |
| |
| AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1); |
| |
| if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) { |
| AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1); |
| AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss, |
| hdr, skb_shinfo(skb)->gso_size); |
| } else if (skb->ip_summed == CHECKSUM_PARTIAL) { |
| if (is_tcp_pkt(skb)) |
| AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1); |
| else if (is_udp_pkt(skb)) |
| AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1); |
| } |
| |
| if (vlan && vlan_tx_tag_present(skb)) { |
| AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1); |
| AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag, |
| hdr, vlan_tx_tag_get(skb)); |
| } |
| |
| AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1); |
| AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1); |
| AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt); |
| AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len); |
| } |
| |
| |
| static int make_tx_wrbs(struct be_adapter *adapter, |
| struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb) |
| { |
| u64 busaddr; |
| u32 i, copied = 0; |
| struct pci_dev *pdev = adapter->pdev; |
| struct sk_buff *first_skb = skb; |
| struct be_queue_info *txq = &adapter->tx_obj.q; |
| struct be_eth_wrb *wrb; |
| struct be_eth_hdr_wrb *hdr; |
| |
| atomic_add(wrb_cnt, &txq->used); |
| hdr = queue_head_node(txq); |
| queue_head_inc(txq); |
| |
| if (skb->len > skb->data_len) { |
| int len = skb->len - skb->data_len; |
| busaddr = pci_map_single(pdev, skb->data, len, |
| PCI_DMA_TODEVICE); |
| wrb = queue_head_node(txq); |
| wrb_fill(wrb, busaddr, len); |
| be_dws_cpu_to_le(wrb, sizeof(*wrb)); |
| queue_head_inc(txq); |
| copied += len; |
| } |
| |
| for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
| struct skb_frag_struct *frag = |
| &skb_shinfo(skb)->frags[i]; |
| busaddr = pci_map_page(pdev, frag->page, |
| frag->page_offset, |
| frag->size, PCI_DMA_TODEVICE); |
| wrb = queue_head_node(txq); |
| wrb_fill(wrb, busaddr, frag->size); |
| be_dws_cpu_to_le(wrb, sizeof(*wrb)); |
| queue_head_inc(txq); |
| copied += frag->size; |
| } |
| |
| if (dummy_wrb) { |
| wrb = queue_head_node(txq); |
| wrb_fill(wrb, 0, 0); |
| be_dws_cpu_to_le(wrb, sizeof(*wrb)); |
| queue_head_inc(txq); |
| } |
| |
| wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false, |
| wrb_cnt, copied); |
| be_dws_cpu_to_le(hdr, sizeof(*hdr)); |
| |
| return copied; |
| } |
| |
| static int be_xmit(struct sk_buff *skb, struct net_device *netdev) |
| { |
| struct be_adapter *adapter = netdev_priv(netdev); |
| struct be_tx_obj *tx_obj = &adapter->tx_obj; |
| struct be_queue_info *txq = &tx_obj->q; |
| u32 wrb_cnt = 0, copied = 0; |
| u32 start = txq->head; |
| bool dummy_wrb, stopped = false; |
| |
| wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb); |
| |
| copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb); |
| |
| /* record the sent skb in the sent_skb table */ |
| BUG_ON(tx_obj->sent_skb_list[start]); |
| tx_obj->sent_skb_list[start] = skb; |
| |
| /* Ensure that txq has space for the next skb; Else stop the queue |
| * *BEFORE* ringing the tx doorbell, so that we serialze the |
| * tx compls of the current transmit which'll wake up the queue |
| */ |
| if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) { |
| netif_stop_queue(netdev); |
| stopped = true; |
| } |
| |
| be_txq_notify(adapter, txq->id, wrb_cnt); |
| |
| be_tx_stats_update(adapter, wrb_cnt, copied, stopped); |
| return NETDEV_TX_OK; |
| } |
| |
| static int be_change_mtu(struct net_device *netdev, int new_mtu) |
| { |
| struct be_adapter *adapter = netdev_priv(netdev); |
| if (new_mtu < BE_MIN_MTU || |
| new_mtu > BE_MAX_JUMBO_FRAME_SIZE) { |
| dev_info(&adapter->pdev->dev, |
| "MTU must be between %d and %d bytes\n", |
| BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE); |
| return -EINVAL; |
| } |
| dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n", |
| netdev->mtu, new_mtu); |
| netdev->mtu = new_mtu; |
| return 0; |
| } |
| |
| /* |
| * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured, |
| * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured, |
| * set the BE in promiscuous VLAN mode. |
| */ |
| static void be_vid_config(struct net_device *netdev) |
| { |
| struct be_adapter *adapter = netdev_priv(netdev); |
| u16 vtag[BE_NUM_VLANS_SUPPORTED]; |
| u16 ntags = 0, i; |
| |
| if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) { |
| /* Construct VLAN Table to give to HW */ |
| for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { |
| if (adapter->vlan_tag[i]) { |
| vtag[ntags] = cpu_to_le16(i); |
| ntags++; |
| } |
| } |
| be_cmd_vlan_config(adapter, adapter->if_handle, |
| vtag, ntags, 1, 0); |
| } else { |
| be_cmd_vlan_config(adapter, adapter->if_handle, |
| NULL, 0, 1, 1); |
| } |
| } |
| |
| static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp) |
| { |
| struct be_adapter *adapter = netdev_priv(netdev); |
| struct be_eq_obj *rx_eq = &adapter->rx_eq; |
| struct be_eq_obj *tx_eq = &adapter->tx_eq; |
| |
| be_eq_notify(adapter, rx_eq->q.id, false, false, 0); |
| be_eq_notify(adapter, tx_eq->q.id, false, false, 0); |
| adapter->vlan_grp = grp; |
| be_eq_notify(adapter, rx_eq->q.id, true, false, 0); |
| be_eq_notify(adapter, tx_eq->q.id, true, false, 0); |
| } |
| |
| static void be_vlan_add_vid(struct net_device *netdev, u16 vid) |
| { |
| struct be_adapter *adapter = netdev_priv(netdev); |
| |
| adapter->num_vlans++; |
| adapter->vlan_tag[vid] = 1; |
| |
| be_vid_config(netdev); |
| } |
| |
| static void be_vlan_rem_vid(struct net_device *netdev, u16 vid) |
| { |
| struct be_adapter *adapter = netdev_priv(netdev); |
| |
| adapter->num_vlans--; |
| adapter->vlan_tag[vid] = 0; |
| |
| vlan_group_set_device(adapter->vlan_grp, vid, NULL); |
| be_vid_config(netdev); |
| } |
| |
| static void be_set_multicast_list(struct net_device *netdev) |
| { |
| struct be_adapter *adapter = netdev_priv(netdev); |
| |
| if (netdev->flags & IFF_PROMISC) { |
| be_cmd_promiscuous_config(adapter, adapter->port_num, 1); |
| adapter->promiscuous = true; |
| goto done; |
| } |
| |
| /* BE was previously in promiscous mode; disable it */ |
| if (adapter->promiscuous) { |
| adapter->promiscuous = false; |
| be_cmd_promiscuous_config(adapter, adapter->port_num, 0); |
| } |
| |
| if (netdev->flags & IFF_ALLMULTI) { |
| be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0); |
| goto done; |
| } |
| |
| be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list, |
| netdev->mc_count); |
| done: |
| return; |
| } |
| |
| static void be_rx_rate_update(struct be_adapter *adapter) |
| { |
| struct be_drvr_stats *stats = drvr_stats(adapter); |
| ulong now = jiffies; |
| |
| /* Wrapped around */ |
| if (time_before(now, stats->be_rx_jiffies)) { |
| stats->be_rx_jiffies = now; |
| return; |
| } |
| |
| /* Update the rate once in two seconds */ |
| if ((now - stats->be_rx_jiffies) < 2 * HZ) |
| return; |
| |
| stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes |
| - stats->be_rx_bytes_prev, |
| now - stats->be_rx_jiffies); |
| stats->be_rx_jiffies = now; |
| stats->be_rx_bytes_prev = stats->be_rx_bytes; |
| } |
| |
| static void be_rx_stats_update(struct be_adapter *adapter, |
| u32 pktsize, u16 numfrags) |
| { |
| struct be_drvr_stats *stats = drvr_stats(adapter); |
| |
| stats->be_rx_compl++; |
| stats->be_rx_frags += numfrags; |
| stats->be_rx_bytes += pktsize; |
| } |
| |
| static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso) |
| { |
| u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk; |
| |
| l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp); |
| ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp); |
| ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp); |
| if (ip_version) { |
| tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp); |
| udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp); |
| } |
| ipv6_chk = (ip_version && (tcpf || udpf)); |
| |
| return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true; |
| } |
| |
| static struct be_rx_page_info * |
| get_rx_page_info(struct be_adapter *adapter, u16 frag_idx) |
| { |
| struct be_rx_page_info *rx_page_info; |
| struct be_queue_info *rxq = &adapter->rx_obj.q; |
| |
| rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx]; |
| BUG_ON(!rx_page_info->page); |
| |
| if (rx_page_info->last_page_user) |
| pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus), |
| adapter->big_page_size, PCI_DMA_FROMDEVICE); |
| |
| atomic_dec(&rxq->used); |
| return rx_page_info; |
| } |
| |
| /* Throwaway the data in the Rx completion */ |
| static void be_rx_compl_discard(struct be_adapter *adapter, |
| struct be_eth_rx_compl *rxcp) |
| { |
| struct be_queue_info *rxq = &adapter->rx_obj.q; |
| struct be_rx_page_info *page_info; |
| u16 rxq_idx, i, num_rcvd; |
| |
| rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp); |
| num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp); |
| |
| for (i = 0; i < num_rcvd; i++) { |
| page_info = get_rx_page_info(adapter, rxq_idx); |
| put_page(page_info->page); |
| memset(page_info, 0, sizeof(*page_info)); |
| index_inc(&rxq_idx, rxq->len); |
| } |
| } |
| |
| /* |
| * skb_fill_rx_data forms a complete skb for an ether frame |
| * indicated by rxcp. |
| */ |
| static void skb_fill_rx_data(struct be_adapter *adapter, |
| struct sk_buff *skb, struct be_eth_rx_compl *rxcp) |
| { |
| struct be_queue_info *rxq = &adapter->rx_obj.q; |
| struct be_rx_page_info *page_info; |
| u16 rxq_idx, i, num_rcvd, j; |
| u32 pktsize, hdr_len, curr_frag_len, size; |
| u8 *start; |
| |
| rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp); |
| pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp); |
| num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp); |
| |
| page_info = get_rx_page_info(adapter, rxq_idx); |
| |
| start = page_address(page_info->page) + page_info->page_offset; |
| prefetch(start); |
| |
| /* Copy data in the first descriptor of this completion */ |
| curr_frag_len = min(pktsize, rx_frag_size); |
| |
| /* Copy the header portion into skb_data */ |
| hdr_len = min((u32)BE_HDR_LEN, curr_frag_len); |
| memcpy(skb->data, start, hdr_len); |
| skb->len = curr_frag_len; |
| if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */ |
| /* Complete packet has now been moved to data */ |
| put_page(page_info->page); |
| skb->data_len = 0; |
| skb->tail += curr_frag_len; |
| } else { |
| skb_shinfo(skb)->nr_frags = 1; |
| skb_shinfo(skb)->frags[0].page = page_info->page; |
| skb_shinfo(skb)->frags[0].page_offset = |
| page_info->page_offset + hdr_len; |
| skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len; |
| skb->data_len = curr_frag_len - hdr_len; |
| skb->tail += hdr_len; |
| } |
| memset(page_info, 0, sizeof(*page_info)); |
| |
| if (pktsize <= rx_frag_size) { |
| BUG_ON(num_rcvd != 1); |
| goto done; |
| } |
| |
| /* More frags present for this completion */ |
| size = pktsize; |
| for (i = 1, j = 0; i < num_rcvd; i++) { |
| size -= curr_frag_len; |
| index_inc(&rxq_idx, rxq->len); |
| page_info = get_rx_page_info(adapter, rxq_idx); |
| |
| curr_frag_len = min(size, rx_frag_size); |
| |
| /* Coalesce all frags from the same physical page in one slot */ |
| if (page_info->page_offset == 0) { |
| /* Fresh page */ |
| j++; |
| skb_shinfo(skb)->frags[j].page = page_info->page; |
| skb_shinfo(skb)->frags[j].page_offset = |
| page_info->page_offset; |
| skb_shinfo(skb)->frags[j].size = 0; |
| skb_shinfo(skb)->nr_frags++; |
| } else { |
| put_page(page_info->page); |
| } |
| |
| skb_shinfo(skb)->frags[j].size += curr_frag_len; |
| skb->len += curr_frag_len; |
| skb->data_len += curr_frag_len; |
| |
| memset(page_info, 0, sizeof(*page_info)); |
| } |
| BUG_ON(j > MAX_SKB_FRAGS); |
| |
| done: |
| be_rx_stats_update(adapter, pktsize, num_rcvd); |
| return; |
| } |
| |
| /* Process the RX completion indicated by rxcp when GRO is disabled */ |
| static void be_rx_compl_process(struct be_adapter *adapter, |
| struct be_eth_rx_compl *rxcp) |
| { |
| struct sk_buff *skb; |
| u32 vtp, vid; |
| |
| vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp); |
| |
| skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN); |
| if (!skb) { |
| if (net_ratelimit()) |
| dev_warn(&adapter->pdev->dev, "skb alloc failed\n"); |
| be_rx_compl_discard(adapter, rxcp); |
| return; |
| } |
| |
| skb_reserve(skb, NET_IP_ALIGN); |
| |
| skb_fill_rx_data(adapter, skb, rxcp); |
| |
| if (do_pkt_csum(rxcp, adapter->rx_csum)) |
| skb->ip_summed = CHECKSUM_NONE; |
| else |
| skb->ip_summed = CHECKSUM_UNNECESSARY; |
| |
| skb->truesize = skb->len + sizeof(struct sk_buff); |
| skb->protocol = eth_type_trans(skb, adapter->netdev); |
| skb->dev = adapter->netdev; |
| |
| if (vtp) { |
| if (!adapter->vlan_grp || adapter->num_vlans == 0) { |
| kfree_skb(skb); |
| return; |
| } |
| vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp); |
| vid = be16_to_cpu(vid); |
| vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid); |
| } else { |
| netif_receive_skb(skb); |
| } |
| |
| adapter->netdev->last_rx = jiffies; |
| |
| return; |
| } |
| |
| /* Process the RX completion indicated by rxcp when GRO is enabled */ |
| static void be_rx_compl_process_gro(struct be_adapter *adapter, |
| struct be_eth_rx_compl *rxcp) |
| { |
| struct be_rx_page_info *page_info; |
| struct sk_buff *skb = NULL; |
| struct be_queue_info *rxq = &adapter->rx_obj.q; |
| struct be_eq_obj *eq_obj = &adapter->rx_eq; |
| u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len; |
| u16 i, rxq_idx = 0, vid, j; |
| |
| num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp); |
| pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp); |
| vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp); |
| rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp); |
| |
| skb = napi_get_frags(&eq_obj->napi); |
| if (!skb) { |
| be_rx_compl_discard(adapter, rxcp); |
| return; |
| } |
| |
| remaining = pkt_size; |
| for (i = 0, j = -1; i < num_rcvd; i++) { |
| page_info = get_rx_page_info(adapter, rxq_idx); |
| |
| curr_frag_len = min(remaining, rx_frag_size); |
| |
| /* Coalesce all frags from the same physical page in one slot */ |
| if (i == 0 || page_info->page_offset == 0) { |
| /* First frag or Fresh page */ |
| j++; |
| skb_shinfo(skb)->frags[j].page = page_info->page; |
| skb_shinfo(skb)->frags[j].page_offset = |
| page_info->page_offset; |
| skb_shinfo(skb)->frags[j].size = 0; |
| } else { |
| put_page(page_info->page); |
| } |
| skb_shinfo(skb)->frags[j].size += curr_frag_len; |
| |
| remaining -= curr_frag_len; |
| index_inc(&rxq_idx, rxq->len); |
| memset(page_info, 0, sizeof(*page_info)); |
| } |
| BUG_ON(j > MAX_SKB_FRAGS); |
| |
| skb_shinfo(skb)->nr_frags = j + 1; |
| skb->len = pkt_size; |
| skb->data_len = pkt_size; |
| skb->truesize += pkt_size; |
| skb->ip_summed = CHECKSUM_UNNECESSARY; |
| |
| if (likely(!vlanf)) { |
| napi_gro_frags(&eq_obj->napi); |
| } else { |
| vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp); |
| vid = be16_to_cpu(vid); |
| |
| if (!adapter->vlan_grp || adapter->num_vlans == 0) |
| return; |
| |
| vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid); |
| } |
| |
| be_rx_stats_update(adapter, pkt_size, num_rcvd); |
| return; |
| } |
| |
| static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter) |
| { |
| struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq); |
| |
| if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0) |
| return NULL; |
| |
| be_dws_le_to_cpu(rxcp, sizeof(*rxcp)); |
| |
| queue_tail_inc(&adapter->rx_obj.cq); |
| return rxcp; |
| } |
| |
| /* To reset the valid bit, we need to reset the whole word as |
| * when walking the queue the valid entries are little-endian |
| * and invalid entries are host endian |
| */ |
| static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp) |
| { |
| rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0; |
| } |
| |
| static inline struct page *be_alloc_pages(u32 size) |
| { |
| gfp_t alloc_flags = GFP_ATOMIC; |
| u32 order = get_order(size); |
| if (order > 0) |
| alloc_flags |= __GFP_COMP; |
| return alloc_pages(alloc_flags, order); |
| } |
| |
| /* |
| * Allocate a page, split it to fragments of size rx_frag_size and post as |
| * receive buffers to BE |
| */ |
| static void be_post_rx_frags(struct be_adapter *adapter) |
| { |
| struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl; |
| struct be_rx_page_info *page_info = NULL; |
| struct be_queue_info *rxq = &adapter->rx_obj.q; |
| struct page *pagep = NULL; |
| struct be_eth_rx_d *rxd; |
| u64 page_dmaaddr = 0, frag_dmaaddr; |
| u32 posted, page_offset = 0; |
| |
| page_info = &page_info_tbl[rxq->head]; |
| for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) { |
| if (!pagep) { |
| pagep = be_alloc_pages(adapter->big_page_size); |
| if (unlikely(!pagep)) { |
| drvr_stats(adapter)->be_ethrx_post_fail++; |
| break; |
| } |
| page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0, |
| adapter->big_page_size, |
| PCI_DMA_FROMDEVICE); |
| page_info->page_offset = 0; |
| } else { |
| get_page(pagep); |
| page_info->page_offset = page_offset + rx_frag_size; |
| } |
| page_offset = page_info->page_offset; |
| page_info->page = pagep; |
| pci_unmap_addr_set(page_info, bus, page_dmaaddr); |
| frag_dmaaddr = page_dmaaddr + page_info->page_offset; |
| |
| rxd = queue_head_node(rxq); |
| rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF); |
| rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr)); |
| queue_head_inc(rxq); |
| |
| /* Any space left in the current big page for another frag? */ |
| if ((page_offset + rx_frag_size + rx_frag_size) > |
| adapter->big_page_size) { |
| pagep = NULL; |
| page_info->last_page_user = true; |
| } |
| page_info = &page_info_tbl[rxq->head]; |
| } |
| if (pagep) |
| page_info->last_page_user = true; |
| |
| if (posted) { |
| atomic_add(posted, &rxq->used); |
| be_rxq_notify(adapter, rxq->id, posted); |
| } else if (atomic_read(&rxq->used) == 0) { |
| /* Let be_worker replenish when memory is available */ |
| adapter->rx_post_starved = true; |
| } |
| |
| return; |
| } |
| |
| static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq) |
| { |
| struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq); |
| |
| if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0) |
| return NULL; |
| |
| be_dws_le_to_cpu(txcp, sizeof(*txcp)); |
| |
| txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0; |
| |
| queue_tail_inc(tx_cq); |
| return txcp; |
| } |
| |
| static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index) |
| { |
| struct be_queue_info *txq = &adapter->tx_obj.q; |
| struct be_eth_wrb *wrb; |
| struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list; |
| struct sk_buff *sent_skb; |
| u64 busaddr; |
| u16 cur_index, num_wrbs = 0; |
| |
| cur_index = txq->tail; |
| sent_skb = sent_skbs[cur_index]; |
| BUG_ON(!sent_skb); |
| sent_skbs[cur_index] = NULL; |
| |
| do { |
| cur_index = txq->tail; |
| wrb = queue_tail_node(txq); |
| be_dws_le_to_cpu(wrb, sizeof(*wrb)); |
| busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo; |
| if (busaddr != 0) { |
| pci_unmap_single(adapter->pdev, busaddr, |
| wrb->frag_len, PCI_DMA_TODEVICE); |
| } |
| num_wrbs++; |
| queue_tail_inc(txq); |
| } while (cur_index != last_index); |
| |
| atomic_sub(num_wrbs, &txq->used); |
| |
| kfree_skb(sent_skb); |
| } |
| |
| static void be_rx_q_clean(struct be_adapter *adapter) |
| { |
| struct be_rx_page_info *page_info; |
| struct be_queue_info *rxq = &adapter->rx_obj.q; |
| struct be_queue_info *rx_cq = &adapter->rx_obj.cq; |
| struct be_eth_rx_compl *rxcp; |
| u16 tail; |
| |
| /* First cleanup pending rx completions */ |
| while ((rxcp = be_rx_compl_get(adapter)) != NULL) { |
| be_rx_compl_discard(adapter, rxcp); |
| be_rx_compl_reset(rxcp); |
| be_cq_notify(adapter, rx_cq->id, true, 1); |
| } |
| |
| /* Then free posted rx buffer that were not used */ |
| tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len; |
| for (; tail != rxq->head; index_inc(&tail, rxq->len)) { |
| page_info = get_rx_page_info(adapter, tail); |
| put_page(page_info->page); |
| memset(page_info, 0, sizeof(*page_info)); |
| } |
| BUG_ON(atomic_read(&rxq->used)); |
| } |
| |
| static void be_tx_q_clean(struct be_adapter *adapter) |
| { |
| struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list; |
| struct sk_buff *sent_skb; |
| struct be_queue_info *txq = &adapter->tx_obj.q; |
| u16 last_index; |
| bool dummy_wrb; |
| |
| while (atomic_read(&txq->used)) { |
| sent_skb = sent_skbs[txq->tail]; |
| last_index = txq->tail; |
| index_adv(&last_index, |
| wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len); |
| be_tx_compl_process(adapter, last_index); |
| } |
| } |
| |
| static void be_mcc_queues_destroy(struct be_adapter *adapter) |
| { |
| struct be_queue_info *q; |
| |
| q = &adapter->mcc_obj.q; |
| if (q->created) |
| be_cmd_q_destroy(adapter, q, QTYPE_MCCQ); |
| be_queue_free(adapter, q); |
| |
| q = &adapter->mcc_obj.cq; |
| if (q->created) |
| be_cmd_q_destroy(adapter, q, QTYPE_CQ); |
| be_queue_free(adapter, q); |
| } |
| |
| /* Must be called only after TX qs are created as MCC shares TX EQ */ |
| static int be_mcc_queues_create(struct be_adapter *adapter) |
| { |
| struct be_queue_info *q, *cq; |
| |
| /* Alloc MCC compl queue */ |
| cq = &adapter->mcc_obj.cq; |
| if (be_queue_alloc(adapter, cq, MCC_CQ_LEN, |
| sizeof(struct be_mcc_compl))) |
| goto err; |
| |
| /* Ask BE to create MCC compl queue; share TX's eq */ |
| if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0)) |
| goto mcc_cq_free; |
| |
| /* Alloc MCC queue */ |
| q = &adapter->mcc_obj.q; |
| if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb))) |
| goto mcc_cq_destroy; |
| |
| /* Ask BE to create MCC queue */ |
| if (be_cmd_mccq_create(adapter, q, cq)) |
| goto mcc_q_free; |
| |
| return 0; |
| |
| mcc_q_free: |
| be_queue_free(adapter, q); |
| mcc_cq_destroy: |
| be_cmd_q_destroy(adapter, cq, QTYPE_CQ); |
| mcc_cq_free: |
| be_queue_free(adapter, cq); |
| err: |
| return -1; |
| } |
| |
| static void be_tx_queues_destroy(struct be_adapter *adapter) |
| { |
| struct be_queue_info *q; |
| |
| q = &adapter->tx_obj.q; |
| if (q->created) { |
| be_cmd_q_destroy(adapter, q, QTYPE_TXQ); |
| |
| /* No more tx completions can be rcvd now; clean up if there |
| * are any pending completions or pending tx requests */ |
| be_tx_q_clean(adapter); |
| } |
| be_queue_free(adapter, q); |
| |
| q = &adapter->tx_obj.cq; |
| if (q->created) |
| be_cmd_q_destroy(adapter, q, QTYPE_CQ); |
| be_queue_free(adapter, q); |
| |
| q = &adapter->tx_eq.q; |
| if (q->created) |
| be_cmd_q_destroy(adapter, q, QTYPE_EQ); |
| be_queue_free(adapter, q); |
| } |
| |
| static int be_tx_queues_create(struct be_adapter *adapter) |
| { |
| struct be_queue_info *eq, *q, *cq; |
| |
| adapter->tx_eq.max_eqd = 0; |
| adapter->tx_eq.min_eqd = 0; |
| adapter->tx_eq.cur_eqd = 96; |
| adapter->tx_eq.enable_aic = false; |
| /* Alloc Tx Event queue */ |
| eq = &adapter->tx_eq.q; |
| if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry))) |
| return -1; |
| |
| /* Ask BE to create Tx Event queue */ |
| if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd)) |
| goto tx_eq_free; |
| /* Alloc TX eth compl queue */ |
| cq = &adapter->tx_obj.cq; |
| if (be_queue_alloc(adapter, cq, TX_CQ_LEN, |
| sizeof(struct be_eth_tx_compl))) |
| goto tx_eq_destroy; |
| |
| /* Ask BE to create Tx eth compl queue */ |
| if (be_cmd_cq_create(adapter, cq, eq, false, false, 3)) |
| goto tx_cq_free; |
| |
| /* Alloc TX eth queue */ |
| q = &adapter->tx_obj.q; |
| if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb))) |
| goto tx_cq_destroy; |
| |
| /* Ask BE to create Tx eth queue */ |
| if (be_cmd_txq_create(adapter, q, cq)) |
| goto tx_q_free; |
| return 0; |
| |
| tx_q_free: |
| be_queue_free(adapter, q); |
| tx_cq_destroy: |
| be_cmd_q_destroy(adapter, cq, QTYPE_CQ); |
| tx_cq_free: |
| be_queue_free(adapter, cq); |
| tx_eq_destroy: |
| be_cmd_q_destroy(adapter, eq, QTYPE_EQ); |
| tx_eq_free: |
| be_queue_free(adapter, eq); |
| return -1; |
| } |
| |
| static void be_rx_queues_destroy(struct be_adapter *adapter) |
| { |
| struct be_queue_info *q; |
| |
| q = &adapter->rx_obj.q; |
| if (q->created) { |
| be_cmd_q_destroy(adapter, q, QTYPE_RXQ); |
| be_rx_q_clean(adapter); |
| } |
| be_queue_free(adapter, q); |
| |
| q = &adapter->rx_obj.cq; |
| if (q->created) |
| be_cmd_q_destroy(adapter, q, QTYPE_CQ); |
| be_queue_free(adapter, q); |
| |
| q = &adapter->rx_eq.q; |
| if (q->created) |
| be_cmd_q_destroy(adapter, q, QTYPE_EQ); |
| be_queue_free(adapter, q); |
| } |
| |
| static int be_rx_queues_create(struct be_adapter *adapter) |
| { |
| struct be_queue_info *eq, *q, *cq; |
| int rc; |
| |
| adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE; |
| adapter->rx_eq.max_eqd = BE_MAX_EQD; |
| adapter->rx_eq.min_eqd = 0; |
| adapter->rx_eq.cur_eqd = 0; |
| adapter->rx_eq.enable_aic = true; |
| |
| /* Alloc Rx Event queue */ |
| eq = &adapter->rx_eq.q; |
| rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN, |
| sizeof(struct be_eq_entry)); |
| if (rc) |
| return rc; |
| |
| /* Ask BE to create Rx Event queue */ |
| rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd); |
| if (rc) |
| goto rx_eq_free; |
| |
| /* Alloc RX eth compl queue */ |
| cq = &adapter->rx_obj.cq; |
| rc = be_queue_alloc(adapter, cq, RX_CQ_LEN, |
| sizeof(struct be_eth_rx_compl)); |
| if (rc) |
| goto rx_eq_destroy; |
| |
| /* Ask BE to create Rx eth compl queue */ |
| rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3); |
| if (rc) |
| goto rx_cq_free; |
| |
| /* Alloc RX eth queue */ |
| q = &adapter->rx_obj.q; |
| rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d)); |
| if (rc) |
| goto rx_cq_destroy; |
| |
| /* Ask BE to create Rx eth queue */ |
| rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size, |
| BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false); |
| if (rc) |
| goto rx_q_free; |
| |
| return 0; |
| rx_q_free: |
| be_queue_free(adapter, q); |
| rx_cq_destroy: |
| be_cmd_q_destroy(adapter, cq, QTYPE_CQ); |
| rx_cq_free: |
| be_queue_free(adapter, cq); |
| rx_eq_destroy: |
| be_cmd_q_destroy(adapter, eq, QTYPE_EQ); |
| rx_eq_free: |
| be_queue_free(adapter, eq); |
| return rc; |
| } |
| static bool event_get(struct be_eq_obj *eq_obj, u16 *rid) |
| { |
| struct be_eq_entry *entry = queue_tail_node(&eq_obj->q); |
| u32 evt = entry->evt; |
| |
| if (!evt) |
| return false; |
| |
| evt = le32_to_cpu(evt); |
| *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK; |
| entry->evt = 0; |
| queue_tail_inc(&eq_obj->q); |
| return true; |
| } |
| |
| static int event_handle(struct be_adapter *adapter, struct be_eq_obj *eq_obj) |
| { |
| u16 rid = 0, num = 0; |
| |
| while (event_get(eq_obj, &rid)) |
| num++; |
| |
| /* We can see an interrupt and no event */ |
| be_eq_notify(adapter, eq_obj->q.id, true, true, num); |
| if (num) |
| napi_schedule(&eq_obj->napi); |
| |
| return num; |
| } |
| |
| static irqreturn_t be_intx(int irq, void *dev) |
| { |
| struct be_adapter *adapter = dev; |
| int isr; |
| |
| isr = ioread32(adapter->csr + CEV_ISR0_OFFSET + |
| be_pci_func(adapter) * CEV_ISR_SIZE); |
| if (!isr) |
| return IRQ_NONE; |
| |
| event_handle(adapter, &adapter->tx_eq); |
| event_handle(adapter, &adapter->rx_eq); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t be_msix_rx(int irq, void *dev) |
| { |
| struct be_adapter *adapter = dev; |
| |
| event_handle(adapter, &adapter->rx_eq); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t be_msix_tx_mcc(int irq, void *dev) |
| { |
| struct be_adapter *adapter = dev; |
| |
| event_handle(adapter, &adapter->tx_eq); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static inline bool do_gro(struct be_adapter *adapter, |
| struct be_eth_rx_compl *rxcp) |
| { |
| int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp); |
| int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp); |
| |
| if (err) |
| drvr_stats(adapter)->be_rxcp_err++; |
| |
| return (tcp_frame && !err) ? true : false; |
| } |
| |
| int be_poll_rx(struct napi_struct *napi, int budget) |
| { |
| struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi); |
| struct be_adapter *adapter = |
| container_of(rx_eq, struct be_adapter, rx_eq); |
| struct be_queue_info *rx_cq = &adapter->rx_obj.cq; |
| struct be_eth_rx_compl *rxcp; |
| u32 work_done; |
| |
| for (work_done = 0; work_done < budget; work_done++) { |
| rxcp = be_rx_compl_get(adapter); |
| if (!rxcp) |
| break; |
| |
| if (do_gro(adapter, rxcp)) |
| be_rx_compl_process_gro(adapter, rxcp); |
| else |
| be_rx_compl_process(adapter, rxcp); |
| |
| be_rx_compl_reset(rxcp); |
| } |
| |
| /* Refill the queue */ |
| if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM) |
| be_post_rx_frags(adapter); |
| |
| /* All consumed */ |
| if (work_done < budget) { |
| napi_complete(napi); |
| be_cq_notify(adapter, rx_cq->id, true, work_done); |
| } else { |
| /* More to be consumed; continue with interrupts disabled */ |
| be_cq_notify(adapter, rx_cq->id, false, work_done); |
| } |
| return work_done; |
| } |
| |
| void be_process_tx(struct be_adapter *adapter) |
| { |
| struct be_queue_info *txq = &adapter->tx_obj.q; |
| struct be_queue_info *tx_cq = &adapter->tx_obj.cq; |
| struct be_eth_tx_compl *txcp; |
| u32 num_cmpl = 0; |
| u16 end_idx; |
| |
| while ((txcp = be_tx_compl_get(tx_cq))) { |
| end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl, |
| wrb_index, txcp); |
| be_tx_compl_process(adapter, end_idx); |
| num_cmpl++; |
| } |
| |
| if (num_cmpl) { |
| be_cq_notify(adapter, tx_cq->id, true, num_cmpl); |
| |
| /* As Tx wrbs have been freed up, wake up netdev queue if |
| * it was stopped due to lack of tx wrbs. |
| */ |
| if (netif_queue_stopped(adapter->netdev) && |
| atomic_read(&txq->used) < txq->len / 2) { |
| netif_wake_queue(adapter->netdev); |
| } |
| |
| drvr_stats(adapter)->be_tx_events++; |
| drvr_stats(adapter)->be_tx_compl += num_cmpl; |
| } |
| } |
| |
| /* As TX and MCC share the same EQ check for both TX and MCC completions. |
| * For TX/MCC we don't honour budget; consume everything |
| */ |
| static int be_poll_tx_mcc(struct napi_struct *napi, int budget) |
| { |
| struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi); |
| struct be_adapter *adapter = |
| container_of(tx_eq, struct be_adapter, tx_eq); |
| |
| napi_complete(napi); |
| |
| be_process_tx(adapter); |
| |
| be_process_mcc(adapter); |
| |
| return 1; |
| } |
| |
| static void be_worker(struct work_struct *work) |
| { |
| struct be_adapter *adapter = |
| container_of(work, struct be_adapter, work.work); |
| int status; |
| |
| /* Get Stats */ |
| status = be_cmd_get_stats(adapter, &adapter->stats.cmd); |
| if (!status) |
| netdev_stats_update(adapter); |
| |
| /* Set EQ delay */ |
| be_rx_eqd_update(adapter); |
| |
| be_tx_rate_update(adapter); |
| be_rx_rate_update(adapter); |
| |
| if (adapter->rx_post_starved) { |
| adapter->rx_post_starved = false; |
| be_post_rx_frags(adapter); |
| } |
| |
| schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000)); |
| } |
| |
| static void be_msix_enable(struct be_adapter *adapter) |
| { |
| int i, status; |
| |
| for (i = 0; i < BE_NUM_MSIX_VECTORS; i++) |
| adapter->msix_entries[i].entry = i; |
| |
| status = pci_enable_msix(adapter->pdev, adapter->msix_entries, |
| BE_NUM_MSIX_VECTORS); |
| if (status == 0) |
| adapter->msix_enabled = true; |
| return; |
| } |
| |
| static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id) |
| { |
| return adapter->msix_entries[eq_id - 8 * be_pci_func(adapter)].vector; |
| } |
| |
| static int be_msix_register(struct be_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| struct be_eq_obj *tx_eq = &adapter->tx_eq; |
| struct be_eq_obj *rx_eq = &adapter->rx_eq; |
| int status, vec; |
| |
| sprintf(tx_eq->desc, "%s-tx", netdev->name); |
| vec = be_msix_vec_get(adapter, tx_eq->q.id); |
| status = request_irq(vec, be_msix_tx_mcc, 0, tx_eq->desc, adapter); |
| if (status) |
| goto err; |
| |
| sprintf(rx_eq->desc, "%s-rx", netdev->name); |
| vec = be_msix_vec_get(adapter, rx_eq->q.id); |
| status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter); |
| if (status) { /* Free TX IRQ */ |
| vec = be_msix_vec_get(adapter, tx_eq->q.id); |
| free_irq(vec, adapter); |
| goto err; |
| } |
| return 0; |
| err: |
| dev_warn(&adapter->pdev->dev, |
| "MSIX Request IRQ failed - err %d\n", status); |
| pci_disable_msix(adapter->pdev); |
| adapter->msix_enabled = false; |
| return status; |
| } |
| |
| static int be_irq_register(struct be_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| int status; |
| |
| if (adapter->msix_enabled) { |
| status = be_msix_register(adapter); |
| if (status == 0) |
| goto done; |
| } |
| |
| /* INTx */ |
| netdev->irq = adapter->pdev->irq; |
| status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name, |
| adapter); |
| if (status) { |
| dev_err(&adapter->pdev->dev, |
| "INTx request IRQ failed - err %d\n", status); |
| return status; |
| } |
| done: |
| adapter->isr_registered = true; |
| return 0; |
| } |
| |
| static void be_irq_unregister(struct be_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| int vec; |
| |
| if (!adapter->isr_registered) |
| return; |
| |
| /* INTx */ |
| if (!adapter->msix_enabled) { |
| free_irq(netdev->irq, adapter); |
| goto done; |
| } |
| |
| /* MSIx */ |
| vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id); |
| free_irq(vec, adapter); |
| vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id); |
| free_irq(vec, adapter); |
| done: |
| adapter->isr_registered = false; |
| return; |
| } |
| |
| static int be_open(struct net_device *netdev) |
| { |
| struct be_adapter *adapter = netdev_priv(netdev); |
| struct be_eq_obj *rx_eq = &adapter->rx_eq; |
| struct be_eq_obj *tx_eq = &adapter->tx_eq; |
| bool link_up; |
| int status; |
| |
| /* First time posting */ |
| be_post_rx_frags(adapter); |
| |
| napi_enable(&rx_eq->napi); |
| napi_enable(&tx_eq->napi); |
| |
| be_irq_register(adapter); |
| |
| be_intr_set(adapter, true); |
| |
| /* The evt queues are created in unarmed state; arm them */ |
| be_eq_notify(adapter, rx_eq->q.id, true, false, 0); |
| be_eq_notify(adapter, tx_eq->q.id, true, false, 0); |
| |
| /* Rx compl queue may be in unarmed state; rearm it */ |
| be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0); |
| |
| status = be_cmd_link_status_query(adapter, &link_up); |
| if (status) |
| return status; |
| be_link_status_update(adapter, link_up); |
| |
| schedule_delayed_work(&adapter->work, msecs_to_jiffies(100)); |
| return 0; |
| } |
| |
| static int be_setup(struct be_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| u32 if_flags; |
| int status; |
| |
| if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS | |
| BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED | |
| BE_IF_FLAGS_PASS_L3L4_ERRORS; |
| status = be_cmd_if_create(adapter, if_flags, netdev->dev_addr, |
| false/* pmac_invalid */, &adapter->if_handle, |
| &adapter->pmac_id); |
| if (status != 0) |
| goto do_none; |
| |
| be_vid_config(netdev); |
| |
| status = be_cmd_set_flow_control(adapter, true, true); |
| if (status != 0) |
| goto if_destroy; |
| |
| status = be_tx_queues_create(adapter); |
| if (status != 0) |
| goto if_destroy; |
| |
| status = be_rx_queues_create(adapter); |
| if (status != 0) |
| goto tx_qs_destroy; |
| |
| status = be_mcc_queues_create(adapter); |
| if (status != 0) |
| goto rx_qs_destroy; |
| |
| return 0; |
| |
| rx_qs_destroy: |
| be_rx_queues_destroy(adapter); |
| tx_qs_destroy: |
| be_tx_queues_destroy(adapter); |
| if_destroy: |
| be_cmd_if_destroy(adapter, adapter->if_handle); |
| do_none: |
| return status; |
| } |
| |
| static int be_clear(struct be_adapter *adapter) |
| { |
| be_rx_queues_destroy(adapter); |
| be_tx_queues_destroy(adapter); |
| |
| be_cmd_if_destroy(adapter, adapter->if_handle); |
| |
| be_mcc_queues_destroy(adapter); |
| return 0; |
| } |
| |
| static int be_close(struct net_device *netdev) |
| { |
| struct be_adapter *adapter = netdev_priv(netdev); |
| struct be_eq_obj *rx_eq = &adapter->rx_eq; |
| struct be_eq_obj *tx_eq = &adapter->tx_eq; |
| int vec; |
| |
| cancel_delayed_work_sync(&adapter->work); |
| |
| netif_stop_queue(netdev); |
| netif_carrier_off(netdev); |
| adapter->link_up = false; |
| |
| be_intr_set(adapter, false); |
| |
| if (adapter->msix_enabled) { |
| vec = be_msix_vec_get(adapter, tx_eq->q.id); |
| synchronize_irq(vec); |
| vec = be_msix_vec_get(adapter, rx_eq->q.id); |
| synchronize_irq(vec); |
| } else { |
| synchronize_irq(netdev->irq); |
| } |
| be_irq_unregister(adapter); |
| |
| napi_disable(&rx_eq->napi); |
| napi_disable(&tx_eq->napi); |
| |
| return 0; |
| } |
| |
| static struct net_device_ops be_netdev_ops = { |
| .ndo_open = be_open, |
| .ndo_stop = be_close, |
| .ndo_start_xmit = be_xmit, |
| .ndo_get_stats = be_get_stats, |
| .ndo_set_rx_mode = be_set_multicast_list, |
| .ndo_set_mac_address = be_mac_addr_set, |
| .ndo_change_mtu = be_change_mtu, |
| .ndo_validate_addr = eth_validate_addr, |
| .ndo_vlan_rx_register = be_vlan_register, |
| .ndo_vlan_rx_add_vid = be_vlan_add_vid, |
| .ndo_vlan_rx_kill_vid = be_vlan_rem_vid, |
| }; |
| |
| static void be_netdev_init(struct net_device *netdev) |
| { |
| struct be_adapter *adapter = netdev_priv(netdev); |
| |
| netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO | |
| NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM | |
| NETIF_F_IPV6_CSUM | NETIF_F_GRO; |
| |
| netdev->flags |= IFF_MULTICAST; |
| |
| adapter->rx_csum = true; |
| |
| BE_SET_NETDEV_OPS(netdev, &be_netdev_ops); |
| |
| SET_ETHTOOL_OPS(netdev, &be_ethtool_ops); |
| |
| netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx, |
| BE_NAPI_WEIGHT); |
| netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc, |
| BE_NAPI_WEIGHT); |
| |
| netif_carrier_off(netdev); |
| netif_stop_queue(netdev); |
| } |
| |
| static void be_unmap_pci_bars(struct be_adapter *adapter) |
| { |
| if (adapter->csr) |
| iounmap(adapter->csr); |
| if (adapter->db) |
| iounmap(adapter->db); |
| if (adapter->pcicfg) |
| iounmap(adapter->pcicfg); |
| } |
| |
| static int be_map_pci_bars(struct be_adapter *adapter) |
| { |
| u8 __iomem *addr; |
| |
| addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2), |
| pci_resource_len(adapter->pdev, 2)); |
| if (addr == NULL) |
| return -ENOMEM; |
| adapter->csr = addr; |
| |
| addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4), |
| 128 * 1024); |
| if (addr == NULL) |
| goto pci_map_err; |
| adapter->db = addr; |
| |
| addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1), |
| pci_resource_len(adapter->pdev, 1)); |
| if (addr == NULL) |
| goto pci_map_err; |
| adapter->pcicfg = addr; |
| |
| return 0; |
| pci_map_err: |
| be_unmap_pci_bars(adapter); |
| return -ENOMEM; |
| } |
| |
| |
| static void be_ctrl_cleanup(struct be_adapter *adapter) |
| { |
| struct be_dma_mem *mem = &adapter->mbox_mem_alloced; |
| |
| be_unmap_pci_bars(adapter); |
| |
| if (mem->va) |
| pci_free_consistent(adapter->pdev, mem->size, |
| mem->va, mem->dma); |
| } |
| |
| static int be_ctrl_init(struct be_adapter *adapter) |
| { |
| struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced; |
| struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem; |
| int status; |
| |
| status = be_map_pci_bars(adapter); |
| if (status) |
| return status; |
| |
| mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16; |
| mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev, |
| mbox_mem_alloc->size, &mbox_mem_alloc->dma); |
| if (!mbox_mem_alloc->va) { |
| be_unmap_pci_bars(adapter); |
| return -1; |
| } |
| mbox_mem_align->size = sizeof(struct be_mcc_mailbox); |
| mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16); |
| mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16); |
| memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox)); |
| spin_lock_init(&adapter->mbox_lock); |
| spin_lock_init(&adapter->mcc_lock); |
| spin_lock_init(&adapter->mcc_cq_lock); |
| |
| return 0; |
| } |
| |
| static void be_stats_cleanup(struct be_adapter *adapter) |
| { |
| struct be_stats_obj *stats = &adapter->stats; |
| struct be_dma_mem *cmd = &stats->cmd; |
| |
| if (cmd->va) |
| pci_free_consistent(adapter->pdev, cmd->size, |
| cmd->va, cmd->dma); |
| } |
| |
| static int be_stats_init(struct be_adapter *adapter) |
| { |
| struct be_stats_obj *stats = &adapter->stats; |
| struct be_dma_mem *cmd = &stats->cmd; |
| |
| cmd->size = sizeof(struct be_cmd_req_get_stats); |
| cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma); |
| if (cmd->va == NULL) |
| return -1; |
| return 0; |
| } |
| |
| static void __devexit be_remove(struct pci_dev *pdev) |
| { |
| struct be_adapter *adapter = pci_get_drvdata(pdev); |
| if (!adapter) |
| return; |
| |
| unregister_netdev(adapter->netdev); |
| |
| be_clear(adapter); |
| |
| be_stats_cleanup(adapter); |
| |
| be_ctrl_cleanup(adapter); |
| |
| if (adapter->msix_enabled) { |
| pci_disable_msix(adapter->pdev); |
| adapter->msix_enabled = false; |
| } |
| |
| pci_set_drvdata(pdev, NULL); |
| pci_release_regions(pdev); |
| pci_disable_device(pdev); |
| |
| free_netdev(adapter->netdev); |
| } |
| |
| static int be_hw_up(struct be_adapter *adapter) |
| { |
| int status; |
| |
| status = be_cmd_POST(adapter); |
| if (status) |
| return status; |
| |
| status = be_cmd_get_fw_ver(adapter, adapter->fw_ver); |
| if (status) |
| return status; |
| |
| status = be_cmd_query_fw_cfg(adapter, &adapter->port_num); |
| return status; |
| } |
| |
| static int __devinit be_probe(struct pci_dev *pdev, |
| const struct pci_device_id *pdev_id) |
| { |
| int status = 0; |
| struct be_adapter *adapter; |
| struct net_device *netdev; |
| u8 mac[ETH_ALEN]; |
| |
| status = pci_enable_device(pdev); |
| if (status) |
| goto do_none; |
| |
| status = pci_request_regions(pdev, DRV_NAME); |
| if (status) |
| goto disable_dev; |
| pci_set_master(pdev); |
| |
| netdev = alloc_etherdev(sizeof(struct be_adapter)); |
| if (netdev == NULL) { |
| status = -ENOMEM; |
| goto rel_reg; |
| } |
| adapter = netdev_priv(netdev); |
| adapter->pdev = pdev; |
| pci_set_drvdata(pdev, adapter); |
| adapter->netdev = netdev; |
| |
| be_msix_enable(adapter); |
| |
| status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
| if (!status) { |
| netdev->features |= NETIF_F_HIGHDMA; |
| } else { |
| status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
| if (status) { |
| dev_err(&pdev->dev, "Could not set PCI DMA Mask\n"); |
| goto free_netdev; |
| } |
| } |
| |
| status = be_ctrl_init(adapter); |
| if (status) |
| goto free_netdev; |
| |
| status = be_cmd_reset_function(adapter); |
| if (status) |
| goto ctrl_clean; |
| |
| status = be_stats_init(adapter); |
| if (status) |
| goto ctrl_clean; |
| |
| status = be_hw_up(adapter); |
| if (status) |
| goto stats_clean; |
| |
| status = be_cmd_mac_addr_query(adapter, mac, MAC_ADDRESS_TYPE_NETWORK, |
| true /* permanent */, 0); |
| if (status) |
| goto stats_clean; |
| memcpy(netdev->dev_addr, mac, ETH_ALEN); |
| |
| INIT_DELAYED_WORK(&adapter->work, be_worker); |
| be_netdev_init(netdev); |
| SET_NETDEV_DEV(netdev, &adapter->pdev->dev); |
| |
| status = be_setup(adapter); |
| if (status) |
| goto stats_clean; |
| status = register_netdev(netdev); |
| if (status != 0) |
| goto unsetup; |
| |
| dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num); |
| return 0; |
| |
| unsetup: |
| be_clear(adapter); |
| stats_clean: |
| be_stats_cleanup(adapter); |
| ctrl_clean: |
| be_ctrl_cleanup(adapter); |
| free_netdev: |
| free_netdev(adapter->netdev); |
| rel_reg: |
| pci_release_regions(pdev); |
| disable_dev: |
| pci_disable_device(pdev); |
| do_none: |
| dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev)); |
| return status; |
| } |
| |
| static int be_suspend(struct pci_dev *pdev, pm_message_t state) |
| { |
| struct be_adapter *adapter = pci_get_drvdata(pdev); |
| struct net_device *netdev = adapter->netdev; |
| |
| netif_device_detach(netdev); |
| if (netif_running(netdev)) { |
| rtnl_lock(); |
| be_close(netdev); |
| be_clear(adapter); |
| rtnl_unlock(); |
| } |
| |
| pci_save_state(pdev); |
| pci_disable_device(pdev); |
| pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
| return 0; |
| } |
| |
| static int be_resume(struct pci_dev *pdev) |
| { |
| int status = 0; |
| struct be_adapter *adapter = pci_get_drvdata(pdev); |
| struct net_device *netdev = adapter->netdev; |
| |
| netif_device_detach(netdev); |
| |
| status = pci_enable_device(pdev); |
| if (status) |
| return status; |
| |
| pci_set_power_state(pdev, 0); |
| pci_restore_state(pdev); |
| |
| if (netif_running(netdev)) { |
| rtnl_lock(); |
| be_setup(adapter); |
| be_open(netdev); |
| rtnl_unlock(); |
| } |
| netif_device_attach(netdev); |
| return 0; |
| } |
| |
| static struct pci_driver be_driver = { |
| .name = DRV_NAME, |
| .id_table = be_dev_ids, |
| .probe = be_probe, |
| .remove = be_remove, |
| .suspend = be_suspend, |
| .resume = be_resume |
| }; |
| |
| static int __init be_init_module(void) |
| { |
| if (rx_frag_size != 8192 && rx_frag_size != 4096 |
| && rx_frag_size != 2048) { |
| printk(KERN_WARNING DRV_NAME |
| " : Module param rx_frag_size must be 2048/4096/8192." |
| " Using 2048\n"); |
| rx_frag_size = 2048; |
| } |
| |
| return pci_register_driver(&be_driver); |
| } |
| module_init(be_init_module); |
| |
| static void __exit be_exit_module(void) |
| { |
| pci_unregister_driver(&be_driver); |
| } |
| module_exit(be_exit_module); |