diff options
Diffstat (limited to 'drivers/net/benet/be_main.c')
| -rw-r--r-- | drivers/net/benet/be_main.c | 2051 |
1 files changed, 0 insertions, 2051 deletions
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c deleted file mode 100644 index 66c10c87f51..00000000000 --- a/drivers/net/benet/be_main.c +++ /dev/null @@ -1,2051 +0,0 @@ -/* - * 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 <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_ctrl_info *ctrl, bool enable) -{ - u8 __iomem *addr = ctrl->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 { - printk(KERN_WARNING DRV_NAME - ": bad value in membar_int_ctrl reg=0x%x\n", reg); - return; - } - iowrite32(reg, addr); -} - -static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted) -{ - u32 val = 0; - val |= qid & DB_RQ_RING_ID_MASK; - val |= posted << DB_RQ_NUM_POSTED_SHIFT; - iowrite32(val, ctrl->db + DB_RQ_OFFSET); -} - -static void be_txq_notify(struct be_ctrl_info *ctrl, 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, ctrl->db + DB_TXULP1_OFFSET); -} - -static void be_eq_notify(struct be_ctrl_info *ctrl, 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, ctrl->db + DB_EQ_OFFSET); -} - -void be_cq_notify(struct be_ctrl_info *ctrl, 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, ctrl->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->ctrl, adapter->if_handle, - adapter->pmac_id); - if (status) - return status; - - status = be_cmd_pmac_add(&adapter->ctrl, (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(void *ctxt, bool link_up) -{ - struct be_adapter *adapter = ctxt; - 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_ctrl_info *ctrl = &adapter->ctrl; - 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(ctrl, 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->ctrl, 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->ctrl, adapter->if_handle, - vtag, ntags, 1, 0); - } else { - be_cmd_vlan_config(&adapter->ctrl, 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; - struct be_ctrl_info *ctrl = &adapter->ctrl; - - be_eq_notify(ctrl, rx_eq->q.id, false, false, 0); - be_eq_notify(ctrl, tx_eq->q.id, false, false, 0); - adapter->vlan_grp = grp; - be_eq_notify(ctrl, rx_eq->q.id, true, false, 0); - be_eq_notify(ctrl, 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); - struct be_ctrl_info *ctrl = &adapter->ctrl; - - if (netdev->flags & IFF_PROMISC) { - be_cmd_promiscuous_config(ctrl, 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(ctrl, adapter->port_num, 0); - } - - if (netdev->flags & IFF_ALLMULTI) { - be_cmd_multicast_set(ctrl, adapter->if_handle, NULL, 0); - goto done; - } - - be_cmd_multicast_set(ctrl, 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; - u32 pktsize, hdr_len, curr_frag_len; - 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 */ - pktsize -= curr_frag_len; /* account for above copied frag */ - for (i = 1; i < num_rcvd; i++) { - index_inc(&rxq_idx, rxq->len); - page_info = get_rx_page_info(adapter, rxq_idx); - - curr_frag_len = min(pktsize, rx_frag_size); - - skb_shinfo(skb)->frags[i].page = page_info->page; - skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset; - skb_shinfo(skb)->frags[i].size = curr_frag_len; - skb->len += curr_frag_len; - skb->data_len += curr_frag_len; - skb_shinfo(skb)->nr_frags++; - pktsize -= curr_frag_len; - - memset(page_info, 0, sizeof(*page_info)); - } - -done: - be_rx_stats_update(adapter, pktsize, num_rcvd); - return; -} - -/* Process the RX completion indicated by rxcp when LRO 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 LRO is enabled */ -static void be_rx_compl_process_lro(struct be_adapter *adapter, - struct be_eth_rx_compl *rxcp) -{ - struct be_rx_page_info *page_info; - struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME]; - struct be_queue_info *rxq = &adapter->rx_obj.q; - u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len; - u16 i, rxq_idx = 0, vid; - - 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); - - remaining = pkt_size; - for (i = 0; i < num_rcvd; i++) { - page_info = get_rx_page_info(adapter, rxq_idx); - - curr_frag_len = min(remaining, rx_frag_size); - - rx_frags[i].page = page_info->page; - rx_frags[i].page_offset = page_info->page_offset; - rx_frags[i].size = curr_frag_len; - remaining -= curr_frag_len; - - index_inc(&rxq_idx, rxq->len); - - memset(page_info, 0, sizeof(*page_info)); - } - - if (likely(!vlanf)) { - lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size, - pkt_size, NULL, 0); - } 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; - - lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr, - rx_frags, pkt_size, pkt_size, adapter->vlan_grp, - vid, NULL, 0); - } - - 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->ctrl, 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->ctrl, 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; - struct be_ctrl_info *ctrl = &adapter->ctrl; - - q = &ctrl->mcc_obj.q; - if (q->created) - be_cmd_q_destroy(ctrl, q, QTYPE_MCCQ); - be_queue_free(adapter, q); - - q = &ctrl->mcc_obj.cq; - if (q->created) - be_cmd_q_destroy(ctrl, 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; - struct be_ctrl_info *ctrl = &adapter->ctrl; - - /* Alloc MCC compl queue */ - cq = &ctrl->mcc_obj.cq; - if (be_queue_alloc(adapter, cq, MCC_CQ_LEN, - sizeof(struct be_mcc_cq_entry))) - goto err; - - /* Ask BE to create MCC compl queue; share TX's eq */ - if (be_cmd_cq_create(ctrl, cq, &adapter->tx_eq.q, false, true, 0)) - goto mcc_cq_free; - - /* Alloc MCC queue */ - q = &ctrl->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(ctrl, q, cq)) - goto mcc_q_free; - - return 0; - -mcc_q_free: - be_queue_free(adapter, q); -mcc_cq_destroy: - be_cmd_q_destroy(ctrl, 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->ctrl, 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->ctrl, q, QTYPE_CQ); - be_queue_free(adapter, q); - - q = &adapter->tx_eq.q; - if (q->created) - be_cmd_q_destroy(&adapter->ctrl, 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->ctrl, 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->ctrl, 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->ctrl, q, cq)) - goto tx_q_free; - return 0; - -tx_q_free: - be_queue_free(adapter, q); -tx_cq_destroy: - be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ); -tx_cq_free: - be_queue_free(adapter, cq); -tx_eq_destroy: - be_cmd_q_destroy(&adapter->ctrl, 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->ctrl, 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->ctrl, q, QTYPE_CQ); - be_queue_free(adapter, q); - - q = &adapter->rx_eq.q; - if (q->created) - be_cmd_q_destroy(&adapter->ctrl, 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->max_rx_coal = BE_MAX_FRAGS_PER_FRAME; - 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->ctrl, 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->ctrl, 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->ctrl, 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->ctrl, cq, QTYPE_CQ); -rx_cq_free: - be_queue_free(adapter, cq); -rx_eq_destroy: - be_cmd_q_destroy(&adapter->ctrl, 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_ctrl_info *ctrl, - 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(ctrl, 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; - struct be_ctrl_info *ctrl = &adapter->ctrl; - int rx, tx; - - tx = event_handle(ctrl, &adapter->tx_eq); - rx = event_handle(ctrl, &adapter->rx_eq); - - if (rx || tx) - return IRQ_HANDLED; - else - return IRQ_NONE; -} - -static irqreturn_t be_msix_rx(int irq, void *dev) -{ - struct be_adapter *adapter = dev; - - event_handle(&adapter->ctrl, &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->ctrl, &adapter->tx_eq); - - return IRQ_HANDLED; -} - -static inline bool do_lro(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 || (adapter->max_rx_coal <= 1)) ? - false : true; -} - -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_lro(adapter, rxcp)) - be_rx_compl_process_lro(adapter, rxcp); - else - be_rx_compl_process(adapter, rxcp); - - be_rx_compl_reset(rxcp); - } - - lro_flush_all(&adapter->rx_obj.lro_mgr); - - /* 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->ctrl, rx_cq->id, true, work_done); - } else { - /* More to be consumed; continue with interrupts disabled */ - be_cq_notify(&adapter->ctrl, 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->ctrl, 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->ctrl); - - 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->ctrl, &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 * adapter->ctrl.pci_func].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_ctrl_info *ctrl = &adapter->ctrl; - 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(ctrl, true); - - /* The evt queues are created in unarmed state; arm them */ - be_eq_notify(ctrl, rx_eq->q.id, true, false, 0); - be_eq_notify(ctrl, tx_eq->q.id, true, false, 0); - - /* Rx compl queue may be in unarmed state; rearm it */ - be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0); - - status = be_cmd_link_status_query(ctrl, &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 be_ctrl_info *ctrl = &adapter->ctrl; - 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(ctrl, 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(ctrl, 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(ctrl, adapter->if_handle); -do_none: - return status; -} - -static int be_clear(struct be_adapter *adapter) -{ - struct be_ctrl_info *ctrl = &adapter->ctrl; - - be_rx_queues_destroy(adapter); - be_tx_queues_destroy(adapter); - - be_cmd_if_destroy(ctrl, 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_ctrl_info *ctrl = &adapter->ctrl; - 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(ctrl, 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 int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr, - void **ip_hdr, void **tcpudp_hdr, - u64 *hdr_flags, void *priv) -{ - struct ethhdr *eh; - struct vlan_ethhdr *veh; - struct iphdr *iph; - u8 *va = page_address(frag->page) + frag->page_offset; - unsigned long ll_hlen; - - prefetch(va); - eh = (struct ethhdr *)va; - *mac_hdr = eh; - ll_hlen = ETH_HLEN; - if (eh->h_proto != htons(ETH_P_IP)) { - if (eh->h_proto == htons(ETH_P_8021Q)) { - veh = (struct vlan_ethhdr *)va; - if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP)) - return -1; - - ll_hlen += VLAN_HLEN; - } else { - return -1; - } - } - *hdr_flags = LRO_IPV4; - iph = (struct iphdr *)(va + ll_hlen); - *ip_hdr = iph; - if (iph->protocol != IPPROTO_TCP) - return -1; - *hdr_flags |= LRO_TCP; - *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2); - - return 0; -} - -static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev) -{ - struct net_lro_mgr *lro_mgr; - - lro_mgr = &adapter->rx_obj.lro_mgr; - lro_mgr->dev = netdev; - lro_mgr->features = LRO_F_NAPI; - lro_mgr->ip_summed = CHECKSUM_UNNECESSARY; - lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY; - lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS; - lro_mgr->lro_arr = adapter->rx_obj.lro_desc; - lro_mgr->get_frag_header = be_get_frag_header; - lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME; -} - -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; - - netdev->flags |= IFF_MULTICAST; - - adapter->rx_csum = true; - - BE_SET_NETDEV_OPS(netdev, &be_netdev_ops); - - SET_ETHTOOL_OPS(netdev, &be_ethtool_ops); - - be_lro_init(adapter, netdev); - - 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) -{ - struct be_ctrl_info *ctrl = &adapter->ctrl; - if (ctrl->csr) - iounmap(ctrl->csr); - if (ctrl->db) - iounmap(ctrl->db); - if (ctrl->pcicfg) - iounmap(ctrl->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->ctrl.csr = addr; - - addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4), - 128 * 1024); - if (addr == NULL) - goto pci_map_err; - adapter->ctrl.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->ctrl.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->ctrl.mbox_mem_alloced; - - be_unmap_pci_bars(adapter); - - if (mem->va) - pci_free_consistent(adapter->pdev, mem->size, - mem->va, mem->dma); -} - -/* Initialize the mbox required to send cmds to BE */ -static int be_ctrl_init(struct be_adapter *adapter) -{ - struct be_ctrl_info *ctrl = &adapter->ctrl; - struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced; - struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem; - int status; - u32 val; - - 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(&ctrl->mbox_lock); - spin_lock_init(&ctrl->mcc_lock); - spin_lock_init(&ctrl->mcc_cq_lock); - - ctrl->async_cb = be_link_status_update; - ctrl->adapter_ctxt = adapter; - - val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET); - ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) & - MEMBAR_CTRL_INT_CTRL_PFUNC_MASK; - 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) -{ - struct be_ctrl_info *ctrl = &adapter->ctrl; - int status; - - status = be_cmd_POST(ctrl); - if (status) - return status; - - status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver); - if (status) - return status; - - status = be_cmd_query_fw_cfg(ctrl, &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; - struct be_ctrl_info *ctrl; - 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; - } - } - - ctrl = &adapter->ctrl; - status = be_ctrl_init(adapter); - if (status) - goto free_netdev; - - 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(ctrl, 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; - } - /* Ensure rx_frag_size is aligned to chache line */ - if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) { - printk(KERN_WARNING DRV_NAME - " : Bad module param rx_frag_size. 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); |