![Ajit Khaparde](/assets/img/avatar_default.png)
- Enables Rx checksum feature by default. - Disables support for ipv6 tso. - Changes in Rx path to handle Rx completions with various checksum options. Signed-off-by: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1972 lines
50 KiB
C
1972 lines
50 KiB
C
/*
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* Copyright (C) 2005 - 2009 ServerEngines
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation. The full GNU General
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* Public License is included in this distribution in the file called COPYING.
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*
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* Contact Information:
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* linux-drivers@serverengines.com
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*
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* ServerEngines
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* 209 N. Fair Oaks Ave
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* Sunnyvale, CA 94085
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*/
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#include "be.h"
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#include <asm/div64.h>
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MODULE_VERSION(DRV_VER);
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MODULE_DEVICE_TABLE(pci, be_dev_ids);
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MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
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MODULE_AUTHOR("ServerEngines Corporation");
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MODULE_LICENSE("GPL");
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static unsigned int rx_frag_size = 2048;
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module_param(rx_frag_size, uint, S_IRUGO);
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MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
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#define BE_VENDOR_ID 0x19a2
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#define BE2_DEVICE_ID_1 0x0211
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static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
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{ PCI_DEVICE(BE_VENDOR_ID, BE2_DEVICE_ID_1) },
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{ 0 }
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};
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MODULE_DEVICE_TABLE(pci, be_dev_ids);
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static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
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{
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struct be_dma_mem *mem = &q->dma_mem;
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if (mem->va)
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pci_free_consistent(adapter->pdev, mem->size,
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mem->va, mem->dma);
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}
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static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
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u16 len, u16 entry_size)
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{
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struct be_dma_mem *mem = &q->dma_mem;
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memset(q, 0, sizeof(*q));
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q->len = len;
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q->entry_size = entry_size;
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mem->size = len * entry_size;
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mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
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if (!mem->va)
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return -1;
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memset(mem->va, 0, mem->size);
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return 0;
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}
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static inline void *queue_head_node(struct be_queue_info *q)
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{
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return q->dma_mem.va + q->head * q->entry_size;
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}
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static inline void *queue_tail_node(struct be_queue_info *q)
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{
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return q->dma_mem.va + q->tail * q->entry_size;
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}
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static inline void queue_head_inc(struct be_queue_info *q)
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{
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index_inc(&q->head, q->len);
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}
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static inline void queue_tail_inc(struct be_queue_info *q)
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{
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index_inc(&q->tail, q->len);
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}
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static void be_intr_set(struct be_ctrl_info *ctrl, bool enable)
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{
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u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
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u32 reg = ioread32(addr);
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u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
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if (!enabled && enable) {
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reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
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} else if (enabled && !enable) {
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reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
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} else {
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printk(KERN_WARNING DRV_NAME
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": bad value in membar_int_ctrl reg=0x%x\n", reg);
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return;
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}
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iowrite32(reg, addr);
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}
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static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
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{
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u32 val = 0;
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val |= qid & DB_RQ_RING_ID_MASK;
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val |= posted << DB_RQ_NUM_POSTED_SHIFT;
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iowrite32(val, ctrl->db + DB_RQ_OFFSET);
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}
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static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
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{
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u32 val = 0;
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val |= qid & DB_TXULP_RING_ID_MASK;
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val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
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iowrite32(val, ctrl->db + DB_TXULP1_OFFSET);
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}
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static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid,
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bool arm, bool clear_int, u16 num_popped)
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{
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u32 val = 0;
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val |= qid & DB_EQ_RING_ID_MASK;
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if (arm)
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val |= 1 << DB_EQ_REARM_SHIFT;
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if (clear_int)
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val |= 1 << DB_EQ_CLR_SHIFT;
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val |= 1 << DB_EQ_EVNT_SHIFT;
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val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
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iowrite32(val, ctrl->db + DB_EQ_OFFSET);
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}
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static void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid,
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bool arm, u16 num_popped)
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{
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u32 val = 0;
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val |= qid & DB_CQ_RING_ID_MASK;
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if (arm)
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val |= 1 << DB_CQ_REARM_SHIFT;
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val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
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iowrite32(val, ctrl->db + DB_CQ_OFFSET);
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}
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static int be_mac_addr_set(struct net_device *netdev, void *p)
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{
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struct be_adapter *adapter = netdev_priv(netdev);
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struct sockaddr *addr = p;
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int status = 0;
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if (netif_running(netdev)) {
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status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle,
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adapter->pmac_id);
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if (status)
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return status;
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status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data,
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adapter->if_handle, &adapter->pmac_id);
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}
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if (!status)
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memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
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return status;
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}
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static void netdev_stats_update(struct be_adapter *adapter)
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{
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struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
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struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
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struct be_port_rxf_stats *port_stats =
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&rxf_stats->port[adapter->port_num];
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struct net_device_stats *dev_stats = &adapter->stats.net_stats;
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dev_stats->rx_packets = port_stats->rx_total_frames;
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dev_stats->tx_packets = port_stats->tx_unicastframes +
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port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
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dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
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(u64) port_stats->rx_bytes_lsd;
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dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
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(u64) port_stats->tx_bytes_lsd;
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/* bad pkts received */
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dev_stats->rx_errors = port_stats->rx_crc_errors +
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port_stats->rx_alignment_symbol_errors +
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port_stats->rx_in_range_errors +
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port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
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/* packet transmit problems */
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dev_stats->tx_errors = 0;
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/* no space in linux buffers */
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dev_stats->rx_dropped = 0;
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/* no space available in linux */
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dev_stats->tx_dropped = 0;
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dev_stats->multicast = port_stats->tx_multicastframes;
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dev_stats->collisions = 0;
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/* detailed rx errors */
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dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
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port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
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/* receive ring buffer overflow */
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dev_stats->rx_over_errors = 0;
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dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
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/* frame alignment errors */
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dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
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/* receiver fifo overrun */
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/* drops_no_pbuf is no per i/f, it's per BE card */
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dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
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port_stats->rx_input_fifo_overflow +
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rxf_stats->rx_drops_no_pbuf;
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/* receiver missed packetd */
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dev_stats->rx_missed_errors = 0;
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/* detailed tx_errors */
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dev_stats->tx_aborted_errors = 0;
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dev_stats->tx_carrier_errors = 0;
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dev_stats->tx_fifo_errors = 0;
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dev_stats->tx_heartbeat_errors = 0;
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dev_stats->tx_window_errors = 0;
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}
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static void be_link_status_update(struct be_adapter *adapter)
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{
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struct be_link_info *prev = &adapter->link;
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struct be_link_info now = { 0 };
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struct net_device *netdev = adapter->netdev;
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be_cmd_link_status_query(&adapter->ctrl, &now);
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/* If link came up or went down */
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if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO ||
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prev->speed == PHY_LINK_SPEED_ZERO)) {
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if (now.speed == PHY_LINK_SPEED_ZERO) {
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netif_stop_queue(netdev);
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netif_carrier_off(netdev);
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printk(KERN_INFO "%s: Link down\n", netdev->name);
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} else {
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netif_start_queue(netdev);
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netif_carrier_on(netdev);
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printk(KERN_INFO "%s: Link up\n", netdev->name);
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}
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}
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*prev = now;
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}
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/* Update the EQ delay n BE based on the RX frags consumed / sec */
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static void be_rx_eqd_update(struct be_adapter *adapter)
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{
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struct be_ctrl_info *ctrl = &adapter->ctrl;
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struct be_eq_obj *rx_eq = &adapter->rx_eq;
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struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
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ulong now = jiffies;
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u32 eqd;
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if (!rx_eq->enable_aic)
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return;
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/* Wrapped around */
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if (time_before(now, stats->rx_fps_jiffies)) {
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stats->rx_fps_jiffies = now;
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return;
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}
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/* Update once a second */
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if ((now - stats->rx_fps_jiffies) < HZ)
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return;
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stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
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((now - stats->rx_fps_jiffies) / HZ);
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stats->rx_fps_jiffies = now;
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stats->be_prev_rx_frags = stats->be_rx_frags;
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eqd = stats->be_rx_fps / 110000;
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eqd = eqd << 3;
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if (eqd > rx_eq->max_eqd)
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eqd = rx_eq->max_eqd;
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if (eqd < rx_eq->min_eqd)
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eqd = rx_eq->min_eqd;
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if (eqd < 10)
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eqd = 0;
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if (eqd != rx_eq->cur_eqd)
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be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
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rx_eq->cur_eqd = eqd;
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}
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static struct net_device_stats *be_get_stats(struct net_device *dev)
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{
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struct be_adapter *adapter = netdev_priv(dev);
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return &adapter->stats.net_stats;
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}
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static u32 be_calc_rate(u64 bytes, unsigned long ticks)
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{
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u64 rate = bytes;
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do_div(rate, ticks / HZ);
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rate <<= 3; /* bytes/sec -> bits/sec */
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do_div(rate, 1000000ul); /* MB/Sec */
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return rate;
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}
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static void be_tx_rate_update(struct be_adapter *adapter)
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{
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struct be_drvr_stats *stats = drvr_stats(adapter);
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ulong now = jiffies;
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/* Wrapped around? */
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if (time_before(now, stats->be_tx_jiffies)) {
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stats->be_tx_jiffies = now;
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return;
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}
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/* Update tx rate once in two seconds */
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if ((now - stats->be_tx_jiffies) > 2 * HZ) {
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stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
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- stats->be_tx_bytes_prev,
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now - stats->be_tx_jiffies);
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stats->be_tx_jiffies = now;
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stats->be_tx_bytes_prev = stats->be_tx_bytes;
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}
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}
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static void be_tx_stats_update(struct be_adapter *adapter,
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u32 wrb_cnt, u32 copied, bool stopped)
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{
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struct be_drvr_stats *stats = drvr_stats(adapter);
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stats->be_tx_reqs++;
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stats->be_tx_wrbs += wrb_cnt;
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stats->be_tx_bytes += copied;
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if (stopped)
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stats->be_tx_stops++;
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}
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/* Determine number of WRB entries needed to xmit data in an skb */
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static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
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{
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int cnt = 0;
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while (skb) {
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if (skb->len > skb->data_len)
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cnt++;
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cnt += skb_shinfo(skb)->nr_frags;
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skb = skb_shinfo(skb)->frag_list;
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}
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/* to account for hdr wrb */
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cnt++;
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if (cnt & 1) {
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/* add a dummy to make it an even num */
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cnt++;
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*dummy = true;
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} else
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*dummy = false;
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BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
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return cnt;
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}
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static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
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{
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wrb->frag_pa_hi = upper_32_bits(addr);
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wrb->frag_pa_lo = addr & 0xFFFFFFFF;
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wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
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}
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static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
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bool vlan, u32 wrb_cnt, u32 len)
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{
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memset(hdr, 0, sizeof(*hdr));
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AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
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if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
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AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
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AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
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hdr, skb_shinfo(skb)->gso_size);
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} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
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if (is_tcp_pkt(skb))
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AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
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else if (is_udp_pkt(skb))
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AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
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}
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if (vlan && vlan_tx_tag_present(skb)) {
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AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
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AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
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hdr, vlan_tx_tag_get(skb));
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}
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AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
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AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
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AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
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AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
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}
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static int make_tx_wrbs(struct be_adapter *adapter,
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struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
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{
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u64 busaddr;
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u32 i, copied = 0;
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struct pci_dev *pdev = adapter->pdev;
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struct sk_buff *first_skb = skb;
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struct be_queue_info *txq = &adapter->tx_obj.q;
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struct be_eth_wrb *wrb;
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struct be_eth_hdr_wrb *hdr;
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atomic_add(wrb_cnt, &txq->used);
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hdr = queue_head_node(txq);
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queue_head_inc(txq);
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while (skb) {
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if (skb->len > skb->data_len) {
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int len = skb->len - skb->data_len;
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busaddr = pci_map_single(pdev, skb->data, len,
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PCI_DMA_TODEVICE);
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wrb = queue_head_node(txq);
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wrb_fill(wrb, busaddr, len);
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be_dws_cpu_to_le(wrb, sizeof(*wrb));
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queue_head_inc(txq);
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copied += len;
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}
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for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
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struct skb_frag_struct *frag =
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&skb_shinfo(skb)->frags[i];
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busaddr = pci_map_page(pdev, frag->page,
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frag->page_offset,
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frag->size, PCI_DMA_TODEVICE);
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wrb = queue_head_node(txq);
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wrb_fill(wrb, busaddr, frag->size);
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be_dws_cpu_to_le(wrb, sizeof(*wrb));
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queue_head_inc(txq);
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copied += frag->size;
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}
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skb = skb_shinfo(skb)->frag_list;
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}
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if (dummy_wrb) {
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wrb = queue_head_node(txq);
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wrb_fill(wrb, 0, 0);
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be_dws_cpu_to_le(wrb, sizeof(*wrb));
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queue_head_inc(txq);
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}
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wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
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wrb_cnt, copied);
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be_dws_cpu_to_le(hdr, sizeof(*hdr));
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return copied;
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}
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static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
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{
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struct be_adapter *adapter = netdev_priv(netdev);
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struct be_tx_obj *tx_obj = &adapter->tx_obj;
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struct be_queue_info *txq = &tx_obj->q;
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u32 wrb_cnt = 0, copied = 0;
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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);
|
|
|
|
netdev->trans_start = jiffies;
|
|
|
|
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_filter(struct net_device *netdev)
|
|
{
|
|
struct be_adapter *adapter = netdev_priv(netdev);
|
|
struct dev_mc_list *mc_ptr;
|
|
u8 mac_addr[32][ETH_ALEN];
|
|
int i = 0;
|
|
|
|
if (netdev->flags & IFF_ALLMULTI) {
|
|
/* set BE in Multicast promiscuous */
|
|
be_cmd_mcast_mac_set(&adapter->ctrl,
|
|
adapter->if_handle, NULL, 0, true);
|
|
return;
|
|
}
|
|
|
|
for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
|
|
memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
|
|
if (++i >= 32) {
|
|
be_cmd_mcast_mac_set(&adapter->ctrl,
|
|
adapter->if_handle, &mac_addr[0][0], i, false);
|
|
i = 0;
|
|
}
|
|
|
|
}
|
|
|
|
if (i) {
|
|
/* reset the promiscuous mode also. */
|
|
be_cmd_mcast_mac_set(&adapter->ctrl,
|
|
adapter->if_handle, &mac_addr[0][0], i, false);
|
|
}
|
|
}
|
|
|
|
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->ctrl, adapter->port_num, 1);
|
|
} else {
|
|
be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
|
|
be_set_multicast_filter(netdev);
|
|
}
|
|
}
|
|
|
|
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);
|
|
return;
|
|
}
|
|
|
|
/* 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));
|
|
}
|
|
|
|
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));
|
|
|
|
rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
|
|
|
|
queue_tail_inc(&adapter->rx_obj.cq);
|
|
return rxcp;
|
|
}
|
|
|
|
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_adapter *adapter)
|
|
{
|
|
struct be_queue_info *tx_cq = &adapter->tx_obj.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_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_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);
|
|
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);
|
|
|
|
/* 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);
|
|
|
|
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(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);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/* For TX we don't honour budget; consume everything */
|
|
int be_poll_tx(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);
|
|
struct be_tx_obj *tx_obj = &adapter->tx_obj;
|
|
struct be_queue_info *tx_cq = &tx_obj->cq;
|
|
struct be_queue_info *txq = &tx_obj->q;
|
|
struct be_eth_tx_compl *txcp;
|
|
u32 num_cmpl = 0;
|
|
u16 end_idx;
|
|
|
|
while ((txcp = be_tx_compl_get(adapter))) {
|
|
end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
|
|
wrb_index, txcp);
|
|
be_tx_compl_process(adapter, end_idx);
|
|
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);
|
|
}
|
|
|
|
napi_complete(napi);
|
|
|
|
be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
|
|
|
|
drvr_stats(adapter)->be_tx_events++;
|
|
drvr_stats(adapter)->be_tx_compl += num_cmpl;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void be_worker(struct work_struct *work)
|
|
{
|
|
struct be_adapter *adapter =
|
|
container_of(work, struct be_adapter, work.work);
|
|
int status;
|
|
|
|
/* Check link */
|
|
be_link_status_update(adapter);
|
|
|
|
/* 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, 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;
|
|
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;
|
|
|
|
/* 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 the 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);
|
|
|
|
/* The compl queues are created in the unarmed state; arm them */
|
|
be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
|
|
be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
|
|
|
|
be_link_status_update(adapter);
|
|
|
|
schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
|
|
return 0;
|
|
|
|
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_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(&adapter->work);
|
|
|
|
netif_stop_queue(netdev);
|
|
netif_carrier_off(netdev);
|
|
adapter->link.speed = PHY_LINK_SPEED_ZERO;
|
|
|
|
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);
|
|
|
|
be_rx_queues_destroy(adapter);
|
|
be_tx_queues_destroy(adapter);
|
|
|
|
be_cmd_if_destroy(ctrl, adapter->if_handle);
|
|
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,
|
|
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->cmd_lock);
|
|
|
|
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_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_64BIT_MASK);
|
|
if (!status) {
|
|
netdev->features |= NETIF_F_HIGHDMA;
|
|
} else {
|
|
status = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
|
|
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 = register_netdev(netdev);
|
|
if (status != 0)
|
|
goto stats_clean;
|
|
|
|
dev_info(&pdev->dev, BE_NAME " port %d\n", adapter->port_num);
|
|
return 0;
|
|
|
|
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_warn(&pdev->dev, BE_NAME " initialization failed\n");
|
|
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);
|
|
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_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);
|