2915 lines
78 KiB
C
2915 lines
78 KiB
C
/*******************************************************************************
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Intel(R) 82576 Virtual Function Linux driver
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Copyright(c) 2009 Intel Corporation.
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Contact Information:
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e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*******************************************************************************/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/vmalloc.h>
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#include <linux/pagemap.h>
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#include <linux/delay.h>
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#include <linux/netdevice.h>
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#include <linux/tcp.h>
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#include <linux/ipv6.h>
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#include <net/checksum.h>
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#include <net/ip6_checksum.h>
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#include <linux/mii.h>
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#include <linux/ethtool.h>
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#include <linux/if_vlan.h>
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#include <linux/pm_qos_params.h>
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#include "igbvf.h"
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#define DRV_VERSION "1.0.0-k0"
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char igbvf_driver_name[] = "igbvf";
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const char igbvf_driver_version[] = DRV_VERSION;
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static const char igbvf_driver_string[] =
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"Intel(R) Virtual Function Network Driver";
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static const char igbvf_copyright[] = "Copyright (c) 2009 Intel Corporation.";
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static int igbvf_poll(struct napi_struct *napi, int budget);
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static void igbvf_reset(struct igbvf_adapter *);
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static void igbvf_set_interrupt_capability(struct igbvf_adapter *);
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static void igbvf_reset_interrupt_capability(struct igbvf_adapter *);
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static struct igbvf_info igbvf_vf_info = {
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.mac = e1000_vfadapt,
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.flags = 0,
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.pba = 10,
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.init_ops = e1000_init_function_pointers_vf,
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};
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static const struct igbvf_info *igbvf_info_tbl[] = {
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[board_vf] = &igbvf_vf_info,
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};
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/**
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* igbvf_desc_unused - calculate if we have unused descriptors
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**/
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static int igbvf_desc_unused(struct igbvf_ring *ring)
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{
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if (ring->next_to_clean > ring->next_to_use)
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return ring->next_to_clean - ring->next_to_use - 1;
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return ring->count + ring->next_to_clean - ring->next_to_use - 1;
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}
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/**
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* igbvf_receive_skb - helper function to handle Rx indications
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* @adapter: board private structure
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* @status: descriptor status field as written by hardware
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* @vlan: descriptor vlan field as written by hardware (no le/be conversion)
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* @skb: pointer to sk_buff to be indicated to stack
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**/
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static void igbvf_receive_skb(struct igbvf_adapter *adapter,
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struct net_device *netdev,
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struct sk_buff *skb,
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u32 status, u16 vlan)
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{
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if (adapter->vlgrp && (status & E1000_RXD_STAT_VP))
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vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
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le16_to_cpu(vlan) &
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E1000_RXD_SPC_VLAN_MASK);
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else
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netif_receive_skb(skb);
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netdev->last_rx = jiffies;
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}
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static inline void igbvf_rx_checksum_adv(struct igbvf_adapter *adapter,
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u32 status_err, struct sk_buff *skb)
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{
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skb->ip_summed = CHECKSUM_NONE;
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/* Ignore Checksum bit is set or checksum is disabled through ethtool */
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if ((status_err & E1000_RXD_STAT_IXSM) ||
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(adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED))
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return;
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/* TCP/UDP checksum error bit is set */
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if (status_err &
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(E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) {
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/* let the stack verify checksum errors */
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adapter->hw_csum_err++;
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return;
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}
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/* It must be a TCP or UDP packet with a valid checksum */
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if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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adapter->hw_csum_good++;
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}
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/**
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* igbvf_alloc_rx_buffers - Replace used receive buffers; packet split
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* @rx_ring: address of ring structure to repopulate
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* @cleaned_count: number of buffers to repopulate
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**/
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static void igbvf_alloc_rx_buffers(struct igbvf_ring *rx_ring,
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int cleaned_count)
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{
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struct igbvf_adapter *adapter = rx_ring->adapter;
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struct net_device *netdev = adapter->netdev;
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struct pci_dev *pdev = adapter->pdev;
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union e1000_adv_rx_desc *rx_desc;
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struct igbvf_buffer *buffer_info;
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struct sk_buff *skb;
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unsigned int i;
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int bufsz;
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i = rx_ring->next_to_use;
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buffer_info = &rx_ring->buffer_info[i];
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if (adapter->rx_ps_hdr_size)
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bufsz = adapter->rx_ps_hdr_size;
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else
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bufsz = adapter->rx_buffer_len;
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while (cleaned_count--) {
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rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i);
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if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) {
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if (!buffer_info->page) {
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buffer_info->page = alloc_page(GFP_ATOMIC);
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if (!buffer_info->page) {
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adapter->alloc_rx_buff_failed++;
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goto no_buffers;
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}
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buffer_info->page_offset = 0;
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} else {
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buffer_info->page_offset ^= PAGE_SIZE / 2;
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}
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buffer_info->page_dma =
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pci_map_page(pdev, buffer_info->page,
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buffer_info->page_offset,
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PAGE_SIZE / 2,
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PCI_DMA_FROMDEVICE);
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}
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if (!buffer_info->skb) {
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skb = netdev_alloc_skb(netdev, bufsz + NET_IP_ALIGN);
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if (!skb) {
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adapter->alloc_rx_buff_failed++;
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goto no_buffers;
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}
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/* Make buffer alignment 2 beyond a 16 byte boundary
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* this will result in a 16 byte aligned IP header after
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* the 14 byte MAC header is removed
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*/
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skb_reserve(skb, NET_IP_ALIGN);
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buffer_info->skb = skb;
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buffer_info->dma = pci_map_single(pdev, skb->data,
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bufsz,
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PCI_DMA_FROMDEVICE);
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}
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/* Refresh the desc even if buffer_addrs didn't change because
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* each write-back erases this info. */
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if (adapter->rx_ps_hdr_size) {
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rx_desc->read.pkt_addr =
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cpu_to_le64(buffer_info->page_dma);
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rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma);
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} else {
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rx_desc->read.pkt_addr =
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cpu_to_le64(buffer_info->dma);
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rx_desc->read.hdr_addr = 0;
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}
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i++;
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if (i == rx_ring->count)
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i = 0;
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buffer_info = &rx_ring->buffer_info[i];
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}
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no_buffers:
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if (rx_ring->next_to_use != i) {
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rx_ring->next_to_use = i;
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if (i == 0)
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i = (rx_ring->count - 1);
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else
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i--;
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/* Force memory writes to complete before letting h/w
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* know there are new descriptors to fetch. (Only
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* applicable for weak-ordered memory model archs,
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* such as IA-64). */
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wmb();
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writel(i, adapter->hw.hw_addr + rx_ring->tail);
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}
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}
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/**
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* igbvf_clean_rx_irq - Send received data up the network stack; legacy
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* @adapter: board private structure
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*
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* the return value indicates whether actual cleaning was done, there
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* is no guarantee that everything was cleaned
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**/
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static bool igbvf_clean_rx_irq(struct igbvf_adapter *adapter,
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int *work_done, int work_to_do)
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{
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struct igbvf_ring *rx_ring = adapter->rx_ring;
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struct net_device *netdev = adapter->netdev;
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struct pci_dev *pdev = adapter->pdev;
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union e1000_adv_rx_desc *rx_desc, *next_rxd;
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struct igbvf_buffer *buffer_info, *next_buffer;
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struct sk_buff *skb;
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bool cleaned = false;
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int cleaned_count = 0;
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unsigned int total_bytes = 0, total_packets = 0;
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unsigned int i;
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u32 length, hlen, staterr;
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i = rx_ring->next_to_clean;
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rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i);
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staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
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while (staterr & E1000_RXD_STAT_DD) {
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if (*work_done >= work_to_do)
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break;
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(*work_done)++;
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buffer_info = &rx_ring->buffer_info[i];
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/* HW will not DMA in data larger than the given buffer, even
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* if it parses the (NFS, of course) header to be larger. In
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* that case, it fills the header buffer and spills the rest
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* into the page.
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*/
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hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info) &
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E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT;
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if (hlen > adapter->rx_ps_hdr_size)
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hlen = adapter->rx_ps_hdr_size;
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length = le16_to_cpu(rx_desc->wb.upper.length);
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cleaned = true;
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cleaned_count++;
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skb = buffer_info->skb;
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prefetch(skb->data - NET_IP_ALIGN);
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buffer_info->skb = NULL;
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if (!adapter->rx_ps_hdr_size) {
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pci_unmap_single(pdev, buffer_info->dma,
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adapter->rx_buffer_len,
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PCI_DMA_FROMDEVICE);
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buffer_info->dma = 0;
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skb_put(skb, length);
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goto send_up;
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}
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if (!skb_shinfo(skb)->nr_frags) {
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pci_unmap_single(pdev, buffer_info->dma,
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adapter->rx_ps_hdr_size,
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PCI_DMA_FROMDEVICE);
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skb_put(skb, hlen);
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}
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if (length) {
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pci_unmap_page(pdev, buffer_info->page_dma,
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PAGE_SIZE / 2,
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PCI_DMA_FROMDEVICE);
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buffer_info->page_dma = 0;
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skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags++,
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buffer_info->page,
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buffer_info->page_offset,
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length);
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if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) ||
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(page_count(buffer_info->page) != 1))
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buffer_info->page = NULL;
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else
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get_page(buffer_info->page);
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skb->len += length;
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skb->data_len += length;
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skb->truesize += length;
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}
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send_up:
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i++;
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if (i == rx_ring->count)
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i = 0;
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next_rxd = IGBVF_RX_DESC_ADV(*rx_ring, i);
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prefetch(next_rxd);
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next_buffer = &rx_ring->buffer_info[i];
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if (!(staterr & E1000_RXD_STAT_EOP)) {
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buffer_info->skb = next_buffer->skb;
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buffer_info->dma = next_buffer->dma;
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next_buffer->skb = skb;
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next_buffer->dma = 0;
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goto next_desc;
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}
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if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
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dev_kfree_skb_irq(skb);
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goto next_desc;
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}
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total_bytes += skb->len;
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total_packets++;
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igbvf_rx_checksum_adv(adapter, staterr, skb);
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skb->protocol = eth_type_trans(skb, netdev);
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igbvf_receive_skb(adapter, netdev, skb, staterr,
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rx_desc->wb.upper.vlan);
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netdev->last_rx = jiffies;
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next_desc:
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rx_desc->wb.upper.status_error = 0;
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/* return some buffers to hardware, one at a time is too slow */
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if (cleaned_count >= IGBVF_RX_BUFFER_WRITE) {
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igbvf_alloc_rx_buffers(rx_ring, cleaned_count);
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cleaned_count = 0;
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}
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/* use prefetched values */
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rx_desc = next_rxd;
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buffer_info = next_buffer;
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staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
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}
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rx_ring->next_to_clean = i;
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cleaned_count = igbvf_desc_unused(rx_ring);
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if (cleaned_count)
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igbvf_alloc_rx_buffers(rx_ring, cleaned_count);
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adapter->total_rx_packets += total_packets;
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adapter->total_rx_bytes += total_bytes;
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adapter->net_stats.rx_bytes += total_bytes;
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adapter->net_stats.rx_packets += total_packets;
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return cleaned;
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}
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static void igbvf_put_txbuf(struct igbvf_adapter *adapter,
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struct igbvf_buffer *buffer_info)
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{
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buffer_info->dma = 0;
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if (buffer_info->skb) {
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skb_dma_unmap(&adapter->pdev->dev, buffer_info->skb,
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DMA_TO_DEVICE);
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dev_kfree_skb_any(buffer_info->skb);
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buffer_info->skb = NULL;
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}
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buffer_info->time_stamp = 0;
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}
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static void igbvf_print_tx_hang(struct igbvf_adapter *adapter)
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{
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struct igbvf_ring *tx_ring = adapter->tx_ring;
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unsigned int i = tx_ring->next_to_clean;
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unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
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union e1000_adv_tx_desc *eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop);
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/* detected Tx unit hang */
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dev_err(&adapter->pdev->dev,
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"Detected Tx Unit Hang:\n"
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" TDH <%x>\n"
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" TDT <%x>\n"
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" next_to_use <%x>\n"
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" next_to_clean <%x>\n"
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"buffer_info[next_to_clean]:\n"
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" time_stamp <%lx>\n"
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" next_to_watch <%x>\n"
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" jiffies <%lx>\n"
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" next_to_watch.status <%x>\n",
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readl(adapter->hw.hw_addr + tx_ring->head),
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readl(adapter->hw.hw_addr + tx_ring->tail),
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tx_ring->next_to_use,
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tx_ring->next_to_clean,
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tx_ring->buffer_info[eop].time_stamp,
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eop,
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jiffies,
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eop_desc->wb.status);
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}
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/**
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* igbvf_setup_tx_resources - allocate Tx resources (Descriptors)
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* @adapter: board private structure
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*
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* Return 0 on success, negative on failure
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**/
|
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int igbvf_setup_tx_resources(struct igbvf_adapter *adapter,
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struct igbvf_ring *tx_ring)
|
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{
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struct pci_dev *pdev = adapter->pdev;
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int size;
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size = sizeof(struct igbvf_buffer) * tx_ring->count;
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tx_ring->buffer_info = vmalloc(size);
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if (!tx_ring->buffer_info)
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goto err;
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memset(tx_ring->buffer_info, 0, size);
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|
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/* round up to nearest 4K */
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tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc);
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tx_ring->size = ALIGN(tx_ring->size, 4096);
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|
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tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size,
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&tx_ring->dma);
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|
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if (!tx_ring->desc)
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goto err;
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tx_ring->adapter = adapter;
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tx_ring->next_to_use = 0;
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tx_ring->next_to_clean = 0;
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|
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return 0;
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err:
|
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vfree(tx_ring->buffer_info);
|
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dev_err(&adapter->pdev->dev,
|
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"Unable to allocate memory for the transmit descriptor ring\n");
|
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return -ENOMEM;
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}
|
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|
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/**
|
|
* igbvf_setup_rx_resources - allocate Rx resources (Descriptors)
|
|
* @adapter: board private structure
|
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*
|
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* Returns 0 on success, negative on failure
|
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**/
|
|
int igbvf_setup_rx_resources(struct igbvf_adapter *adapter,
|
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struct igbvf_ring *rx_ring)
|
|
{
|
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struct pci_dev *pdev = adapter->pdev;
|
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int size, desc_len;
|
|
|
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size = sizeof(struct igbvf_buffer) * rx_ring->count;
|
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rx_ring->buffer_info = vmalloc(size);
|
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if (!rx_ring->buffer_info)
|
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goto err;
|
|
memset(rx_ring->buffer_info, 0, size);
|
|
|
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desc_len = sizeof(union e1000_adv_rx_desc);
|
|
|
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/* Round up to nearest 4K */
|
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rx_ring->size = rx_ring->count * desc_len;
|
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rx_ring->size = ALIGN(rx_ring->size, 4096);
|
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|
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rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size,
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&rx_ring->dma);
|
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|
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if (!rx_ring->desc)
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goto err;
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|
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rx_ring->next_to_clean = 0;
|
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rx_ring->next_to_use = 0;
|
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|
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rx_ring->adapter = adapter;
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|
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return 0;
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|
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err:
|
|
vfree(rx_ring->buffer_info);
|
|
rx_ring->buffer_info = NULL;
|
|
dev_err(&adapter->pdev->dev,
|
|
"Unable to allocate memory for the receive descriptor ring\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/**
|
|
* igbvf_clean_tx_ring - Free Tx Buffers
|
|
* @tx_ring: ring to be cleaned
|
|
**/
|
|
static void igbvf_clean_tx_ring(struct igbvf_ring *tx_ring)
|
|
{
|
|
struct igbvf_adapter *adapter = tx_ring->adapter;
|
|
struct igbvf_buffer *buffer_info;
|
|
unsigned long size;
|
|
unsigned int i;
|
|
|
|
if (!tx_ring->buffer_info)
|
|
return;
|
|
|
|
/* Free all the Tx ring sk_buffs */
|
|
for (i = 0; i < tx_ring->count; i++) {
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
igbvf_put_txbuf(adapter, buffer_info);
|
|
}
|
|
|
|
size = sizeof(struct igbvf_buffer) * tx_ring->count;
|
|
memset(tx_ring->buffer_info, 0, size);
|
|
|
|
/* Zero out the descriptor ring */
|
|
memset(tx_ring->desc, 0, tx_ring->size);
|
|
|
|
tx_ring->next_to_use = 0;
|
|
tx_ring->next_to_clean = 0;
|
|
|
|
writel(0, adapter->hw.hw_addr + tx_ring->head);
|
|
writel(0, adapter->hw.hw_addr + tx_ring->tail);
|
|
}
|
|
|
|
/**
|
|
* igbvf_free_tx_resources - Free Tx Resources per Queue
|
|
* @tx_ring: ring to free resources from
|
|
*
|
|
* Free all transmit software resources
|
|
**/
|
|
void igbvf_free_tx_resources(struct igbvf_ring *tx_ring)
|
|
{
|
|
struct pci_dev *pdev = tx_ring->adapter->pdev;
|
|
|
|
igbvf_clean_tx_ring(tx_ring);
|
|
|
|
vfree(tx_ring->buffer_info);
|
|
tx_ring->buffer_info = NULL;
|
|
|
|
pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
|
|
|
|
tx_ring->desc = NULL;
|
|
}
|
|
|
|
/**
|
|
* igbvf_clean_rx_ring - Free Rx Buffers per Queue
|
|
* @adapter: board private structure
|
|
**/
|
|
static void igbvf_clean_rx_ring(struct igbvf_ring *rx_ring)
|
|
{
|
|
struct igbvf_adapter *adapter = rx_ring->adapter;
|
|
struct igbvf_buffer *buffer_info;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
unsigned long size;
|
|
unsigned int i;
|
|
|
|
if (!rx_ring->buffer_info)
|
|
return;
|
|
|
|
/* Free all the Rx ring sk_buffs */
|
|
for (i = 0; i < rx_ring->count; i++) {
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
if (buffer_info->dma) {
|
|
if (adapter->rx_ps_hdr_size){
|
|
pci_unmap_single(pdev, buffer_info->dma,
|
|
adapter->rx_ps_hdr_size,
|
|
PCI_DMA_FROMDEVICE);
|
|
} else {
|
|
pci_unmap_single(pdev, buffer_info->dma,
|
|
adapter->rx_buffer_len,
|
|
PCI_DMA_FROMDEVICE);
|
|
}
|
|
buffer_info->dma = 0;
|
|
}
|
|
|
|
if (buffer_info->skb) {
|
|
dev_kfree_skb(buffer_info->skb);
|
|
buffer_info->skb = NULL;
|
|
}
|
|
|
|
if (buffer_info->page) {
|
|
if (buffer_info->page_dma)
|
|
pci_unmap_page(pdev, buffer_info->page_dma,
|
|
PAGE_SIZE / 2,
|
|
PCI_DMA_FROMDEVICE);
|
|
put_page(buffer_info->page);
|
|
buffer_info->page = NULL;
|
|
buffer_info->page_dma = 0;
|
|
buffer_info->page_offset = 0;
|
|
}
|
|
}
|
|
|
|
size = sizeof(struct igbvf_buffer) * rx_ring->count;
|
|
memset(rx_ring->buffer_info, 0, size);
|
|
|
|
/* Zero out the descriptor ring */
|
|
memset(rx_ring->desc, 0, rx_ring->size);
|
|
|
|
rx_ring->next_to_clean = 0;
|
|
rx_ring->next_to_use = 0;
|
|
|
|
writel(0, adapter->hw.hw_addr + rx_ring->head);
|
|
writel(0, adapter->hw.hw_addr + rx_ring->tail);
|
|
}
|
|
|
|
/**
|
|
* igbvf_free_rx_resources - Free Rx Resources
|
|
* @rx_ring: ring to clean the resources from
|
|
*
|
|
* Free all receive software resources
|
|
**/
|
|
|
|
void igbvf_free_rx_resources(struct igbvf_ring *rx_ring)
|
|
{
|
|
struct pci_dev *pdev = rx_ring->adapter->pdev;
|
|
|
|
igbvf_clean_rx_ring(rx_ring);
|
|
|
|
vfree(rx_ring->buffer_info);
|
|
rx_ring->buffer_info = NULL;
|
|
|
|
dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
|
|
rx_ring->dma);
|
|
rx_ring->desc = NULL;
|
|
}
|
|
|
|
/**
|
|
* igbvf_update_itr - update the dynamic ITR value based on statistics
|
|
* @adapter: pointer to adapter
|
|
* @itr_setting: current adapter->itr
|
|
* @packets: the number of packets during this measurement interval
|
|
* @bytes: the number of bytes during this measurement interval
|
|
*
|
|
* Stores a new ITR value based on packets and byte
|
|
* counts during the last interrupt. The advantage of per interrupt
|
|
* computation is faster updates and more accurate ITR for the current
|
|
* traffic pattern. Constants in this function were computed
|
|
* based on theoretical maximum wire speed and thresholds were set based
|
|
* on testing data as well as attempting to minimize response time
|
|
* while increasing bulk throughput. This functionality is controlled
|
|
* by the InterruptThrottleRate module parameter.
|
|
**/
|
|
static unsigned int igbvf_update_itr(struct igbvf_adapter *adapter,
|
|
u16 itr_setting, int packets,
|
|
int bytes)
|
|
{
|
|
unsigned int retval = itr_setting;
|
|
|
|
if (packets == 0)
|
|
goto update_itr_done;
|
|
|
|
switch (itr_setting) {
|
|
case lowest_latency:
|
|
/* handle TSO and jumbo frames */
|
|
if (bytes/packets > 8000)
|
|
retval = bulk_latency;
|
|
else if ((packets < 5) && (bytes > 512))
|
|
retval = low_latency;
|
|
break;
|
|
case low_latency: /* 50 usec aka 20000 ints/s */
|
|
if (bytes > 10000) {
|
|
/* this if handles the TSO accounting */
|
|
if (bytes/packets > 8000)
|
|
retval = bulk_latency;
|
|
else if ((packets < 10) || ((bytes/packets) > 1200))
|
|
retval = bulk_latency;
|
|
else if ((packets > 35))
|
|
retval = lowest_latency;
|
|
} else if (bytes/packets > 2000) {
|
|
retval = bulk_latency;
|
|
} else if (packets <= 2 && bytes < 512) {
|
|
retval = lowest_latency;
|
|
}
|
|
break;
|
|
case bulk_latency: /* 250 usec aka 4000 ints/s */
|
|
if (bytes > 25000) {
|
|
if (packets > 35)
|
|
retval = low_latency;
|
|
} else if (bytes < 6000) {
|
|
retval = low_latency;
|
|
}
|
|
break;
|
|
}
|
|
|
|
update_itr_done:
|
|
return retval;
|
|
}
|
|
|
|
static void igbvf_set_itr(struct igbvf_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u16 current_itr;
|
|
u32 new_itr = adapter->itr;
|
|
|
|
adapter->tx_itr = igbvf_update_itr(adapter, adapter->tx_itr,
|
|
adapter->total_tx_packets,
|
|
adapter->total_tx_bytes);
|
|
/* conservative mode (itr 3) eliminates the lowest_latency setting */
|
|
if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
|
|
adapter->tx_itr = low_latency;
|
|
|
|
adapter->rx_itr = igbvf_update_itr(adapter, adapter->rx_itr,
|
|
adapter->total_rx_packets,
|
|
adapter->total_rx_bytes);
|
|
/* conservative mode (itr 3) eliminates the lowest_latency setting */
|
|
if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
|
|
adapter->rx_itr = low_latency;
|
|
|
|
current_itr = max(adapter->rx_itr, adapter->tx_itr);
|
|
|
|
switch (current_itr) {
|
|
/* counts and packets in update_itr are dependent on these numbers */
|
|
case lowest_latency:
|
|
new_itr = 70000;
|
|
break;
|
|
case low_latency:
|
|
new_itr = 20000; /* aka hwitr = ~200 */
|
|
break;
|
|
case bulk_latency:
|
|
new_itr = 4000;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (new_itr != adapter->itr) {
|
|
/*
|
|
* this attempts to bias the interrupt rate towards Bulk
|
|
* by adding intermediate steps when interrupt rate is
|
|
* increasing
|
|
*/
|
|
new_itr = new_itr > adapter->itr ?
|
|
min(adapter->itr + (new_itr >> 2), new_itr) :
|
|
new_itr;
|
|
adapter->itr = new_itr;
|
|
adapter->rx_ring->itr_val = 1952;
|
|
|
|
if (adapter->msix_entries)
|
|
adapter->rx_ring->set_itr = 1;
|
|
else
|
|
ew32(ITR, 1952);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* igbvf_clean_tx_irq - Reclaim resources after transmit completes
|
|
* @adapter: board private structure
|
|
* returns true if ring is completely cleaned
|
|
**/
|
|
static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring)
|
|
{
|
|
struct igbvf_adapter *adapter = tx_ring->adapter;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct igbvf_buffer *buffer_info;
|
|
struct sk_buff *skb;
|
|
union e1000_adv_tx_desc *tx_desc, *eop_desc;
|
|
unsigned int total_bytes = 0, total_packets = 0;
|
|
unsigned int i, eop, count = 0;
|
|
bool cleaned = false;
|
|
|
|
i = tx_ring->next_to_clean;
|
|
eop = tx_ring->buffer_info[i].next_to_watch;
|
|
eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop);
|
|
|
|
while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) &&
|
|
(count < tx_ring->count)) {
|
|
for (cleaned = false; !cleaned; count++) {
|
|
tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
cleaned = (i == eop);
|
|
skb = buffer_info->skb;
|
|
|
|
if (skb) {
|
|
unsigned int segs, bytecount;
|
|
|
|
/* gso_segs is currently only valid for tcp */
|
|
segs = skb_shinfo(skb)->gso_segs ?: 1;
|
|
/* multiply data chunks by size of headers */
|
|
bytecount = ((segs - 1) * skb_headlen(skb)) +
|
|
skb->len;
|
|
total_packets += segs;
|
|
total_bytes += bytecount;
|
|
}
|
|
|
|
igbvf_put_txbuf(adapter, buffer_info);
|
|
tx_desc->wb.status = 0;
|
|
|
|
i++;
|
|
if (i == tx_ring->count)
|
|
i = 0;
|
|
}
|
|
eop = tx_ring->buffer_info[i].next_to_watch;
|
|
eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop);
|
|
}
|
|
|
|
tx_ring->next_to_clean = i;
|
|
|
|
if (unlikely(count &&
|
|
netif_carrier_ok(netdev) &&
|
|
igbvf_desc_unused(tx_ring) >= IGBVF_TX_QUEUE_WAKE)) {
|
|
/* Make sure that anybody stopping the queue after this
|
|
* sees the new next_to_clean.
|
|
*/
|
|
smp_mb();
|
|
if (netif_queue_stopped(netdev) &&
|
|
!(test_bit(__IGBVF_DOWN, &adapter->state))) {
|
|
netif_wake_queue(netdev);
|
|
++adapter->restart_queue;
|
|
}
|
|
}
|
|
|
|
if (adapter->detect_tx_hung) {
|
|
/* Detect a transmit hang in hardware, this serializes the
|
|
* check with the clearing of time_stamp and movement of i */
|
|
adapter->detect_tx_hung = false;
|
|
if (tx_ring->buffer_info[i].time_stamp &&
|
|
time_after(jiffies, tx_ring->buffer_info[i].time_stamp +
|
|
(adapter->tx_timeout_factor * HZ))
|
|
&& !(er32(STATUS) & E1000_STATUS_TXOFF)) {
|
|
|
|
tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
|
|
/* detected Tx unit hang */
|
|
igbvf_print_tx_hang(adapter);
|
|
|
|
netif_stop_queue(netdev);
|
|
}
|
|
}
|
|
adapter->net_stats.tx_bytes += total_bytes;
|
|
adapter->net_stats.tx_packets += total_packets;
|
|
return (count < tx_ring->count);
|
|
}
|
|
|
|
static irqreturn_t igbvf_msix_other(int irq, void *data)
|
|
{
|
|
struct net_device *netdev = data;
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
adapter->int_counter1++;
|
|
|
|
netif_carrier_off(netdev);
|
|
hw->mac.get_link_status = 1;
|
|
if (!test_bit(__IGBVF_DOWN, &adapter->state))
|
|
mod_timer(&adapter->watchdog_timer, jiffies + 1);
|
|
|
|
ew32(EIMS, adapter->eims_other);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t igbvf_intr_msix_tx(int irq, void *data)
|
|
{
|
|
struct net_device *netdev = data;
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct igbvf_ring *tx_ring = adapter->tx_ring;
|
|
|
|
|
|
adapter->total_tx_bytes = 0;
|
|
adapter->total_tx_packets = 0;
|
|
|
|
/* auto mask will automatically reenable the interrupt when we write
|
|
* EICS */
|
|
if (!igbvf_clean_tx_irq(tx_ring))
|
|
/* Ring was not completely cleaned, so fire another interrupt */
|
|
ew32(EICS, tx_ring->eims_value);
|
|
else
|
|
ew32(EIMS, tx_ring->eims_value);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t igbvf_intr_msix_rx(int irq, void *data)
|
|
{
|
|
struct net_device *netdev = data;
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
adapter->int_counter0++;
|
|
|
|
/* Write the ITR value calculated at the end of the
|
|
* previous interrupt.
|
|
*/
|
|
if (adapter->rx_ring->set_itr) {
|
|
writel(adapter->rx_ring->itr_val,
|
|
adapter->hw.hw_addr + adapter->rx_ring->itr_register);
|
|
adapter->rx_ring->set_itr = 0;
|
|
}
|
|
|
|
if (napi_schedule_prep(&adapter->rx_ring->napi)) {
|
|
adapter->total_rx_bytes = 0;
|
|
adapter->total_rx_packets = 0;
|
|
__napi_schedule(&adapter->rx_ring->napi);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
#define IGBVF_NO_QUEUE -1
|
|
|
|
static void igbvf_assign_vector(struct igbvf_adapter *adapter, int rx_queue,
|
|
int tx_queue, int msix_vector)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 ivar, index;
|
|
|
|
/* 82576 uses a table-based method for assigning vectors.
|
|
Each queue has a single entry in the table to which we write
|
|
a vector number along with a "valid" bit. Sadly, the layout
|
|
of the table is somewhat counterintuitive. */
|
|
if (rx_queue > IGBVF_NO_QUEUE) {
|
|
index = (rx_queue >> 1);
|
|
ivar = array_er32(IVAR0, index);
|
|
if (rx_queue & 0x1) {
|
|
/* vector goes into third byte of register */
|
|
ivar = ivar & 0xFF00FFFF;
|
|
ivar |= (msix_vector | E1000_IVAR_VALID) << 16;
|
|
} else {
|
|
/* vector goes into low byte of register */
|
|
ivar = ivar & 0xFFFFFF00;
|
|
ivar |= msix_vector | E1000_IVAR_VALID;
|
|
}
|
|
adapter->rx_ring[rx_queue].eims_value = 1 << msix_vector;
|
|
array_ew32(IVAR0, index, ivar);
|
|
}
|
|
if (tx_queue > IGBVF_NO_QUEUE) {
|
|
index = (tx_queue >> 1);
|
|
ivar = array_er32(IVAR0, index);
|
|
if (tx_queue & 0x1) {
|
|
/* vector goes into high byte of register */
|
|
ivar = ivar & 0x00FFFFFF;
|
|
ivar |= (msix_vector | E1000_IVAR_VALID) << 24;
|
|
} else {
|
|
/* vector goes into second byte of register */
|
|
ivar = ivar & 0xFFFF00FF;
|
|
ivar |= (msix_vector | E1000_IVAR_VALID) << 8;
|
|
}
|
|
adapter->tx_ring[tx_queue].eims_value = 1 << msix_vector;
|
|
array_ew32(IVAR0, index, ivar);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* igbvf_configure_msix - Configure MSI-X hardware
|
|
*
|
|
* igbvf_configure_msix sets up the hardware to properly
|
|
* generate MSI-X interrupts.
|
|
**/
|
|
static void igbvf_configure_msix(struct igbvf_adapter *adapter)
|
|
{
|
|
u32 tmp;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct igbvf_ring *tx_ring = adapter->tx_ring;
|
|
struct igbvf_ring *rx_ring = adapter->rx_ring;
|
|
int vector = 0;
|
|
|
|
adapter->eims_enable_mask = 0;
|
|
|
|
igbvf_assign_vector(adapter, IGBVF_NO_QUEUE, 0, vector++);
|
|
adapter->eims_enable_mask |= tx_ring->eims_value;
|
|
if (tx_ring->itr_val)
|
|
writel(tx_ring->itr_val,
|
|
hw->hw_addr + tx_ring->itr_register);
|
|
else
|
|
writel(1952, hw->hw_addr + tx_ring->itr_register);
|
|
|
|
igbvf_assign_vector(adapter, 0, IGBVF_NO_QUEUE, vector++);
|
|
adapter->eims_enable_mask |= rx_ring->eims_value;
|
|
if (rx_ring->itr_val)
|
|
writel(rx_ring->itr_val,
|
|
hw->hw_addr + rx_ring->itr_register);
|
|
else
|
|
writel(1952, hw->hw_addr + rx_ring->itr_register);
|
|
|
|
/* set vector for other causes, i.e. link changes */
|
|
|
|
tmp = (vector++ | E1000_IVAR_VALID);
|
|
|
|
ew32(IVAR_MISC, tmp);
|
|
|
|
adapter->eims_enable_mask = (1 << (vector)) - 1;
|
|
adapter->eims_other = 1 << (vector - 1);
|
|
e1e_flush();
|
|
}
|
|
|
|
static void igbvf_reset_interrupt_capability(struct igbvf_adapter *adapter)
|
|
{
|
|
if (adapter->msix_entries) {
|
|
pci_disable_msix(adapter->pdev);
|
|
kfree(adapter->msix_entries);
|
|
adapter->msix_entries = NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* igbvf_set_interrupt_capability - set MSI or MSI-X if supported
|
|
*
|
|
* Attempt to configure interrupts using the best available
|
|
* capabilities of the hardware and kernel.
|
|
**/
|
|
static void igbvf_set_interrupt_capability(struct igbvf_adapter *adapter)
|
|
{
|
|
int err = -ENOMEM;
|
|
int i;
|
|
|
|
/* we allocate 3 vectors, 1 for tx, 1 for rx, one for pf messages */
|
|
adapter->msix_entries = kcalloc(3, sizeof(struct msix_entry),
|
|
GFP_KERNEL);
|
|
if (adapter->msix_entries) {
|
|
for (i = 0; i < 3; i++)
|
|
adapter->msix_entries[i].entry = i;
|
|
|
|
err = pci_enable_msix(adapter->pdev,
|
|
adapter->msix_entries, 3);
|
|
}
|
|
|
|
if (err) {
|
|
/* MSI-X failed */
|
|
dev_err(&adapter->pdev->dev,
|
|
"Failed to initialize MSI-X interrupts.\n");
|
|
igbvf_reset_interrupt_capability(adapter);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* igbvf_request_msix - Initialize MSI-X interrupts
|
|
*
|
|
* igbvf_request_msix allocates MSI-X vectors and requests interrupts from the
|
|
* kernel.
|
|
**/
|
|
static int igbvf_request_msix(struct igbvf_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
int err = 0, vector = 0;
|
|
|
|
if (strlen(netdev->name) < (IFNAMSIZ - 5)) {
|
|
sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name);
|
|
sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name);
|
|
} else {
|
|
memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
|
|
memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
|
|
}
|
|
|
|
err = request_irq(adapter->msix_entries[vector].vector,
|
|
&igbvf_intr_msix_tx, 0, adapter->tx_ring->name,
|
|
netdev);
|
|
if (err)
|
|
goto out;
|
|
|
|
adapter->tx_ring->itr_register = E1000_EITR(vector);
|
|
adapter->tx_ring->itr_val = 1952;
|
|
vector++;
|
|
|
|
err = request_irq(adapter->msix_entries[vector].vector,
|
|
&igbvf_intr_msix_rx, 0, adapter->rx_ring->name,
|
|
netdev);
|
|
if (err)
|
|
goto out;
|
|
|
|
adapter->rx_ring->itr_register = E1000_EITR(vector);
|
|
adapter->rx_ring->itr_val = 1952;
|
|
vector++;
|
|
|
|
err = request_irq(adapter->msix_entries[vector].vector,
|
|
&igbvf_msix_other, 0, netdev->name, netdev);
|
|
if (err)
|
|
goto out;
|
|
|
|
igbvf_configure_msix(adapter);
|
|
return 0;
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* igbvf_alloc_queues - Allocate memory for all rings
|
|
* @adapter: board private structure to initialize
|
|
**/
|
|
static int __devinit igbvf_alloc_queues(struct igbvf_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
adapter->tx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL);
|
|
if (!adapter->tx_ring)
|
|
return -ENOMEM;
|
|
|
|
adapter->rx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL);
|
|
if (!adapter->rx_ring) {
|
|
kfree(adapter->tx_ring);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
netif_napi_add(netdev, &adapter->rx_ring->napi, igbvf_poll, 64);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* igbvf_request_irq - initialize interrupts
|
|
*
|
|
* Attempts to configure interrupts using the best available
|
|
* capabilities of the hardware and kernel.
|
|
**/
|
|
static int igbvf_request_irq(struct igbvf_adapter *adapter)
|
|
{
|
|
int err = -1;
|
|
|
|
/* igbvf supports msi-x only */
|
|
if (adapter->msix_entries)
|
|
err = igbvf_request_msix(adapter);
|
|
|
|
if (!err)
|
|
return err;
|
|
|
|
dev_err(&adapter->pdev->dev,
|
|
"Unable to allocate interrupt, Error: %d\n", err);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void igbvf_free_irq(struct igbvf_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
int vector;
|
|
|
|
if (adapter->msix_entries) {
|
|
for (vector = 0; vector < 3; vector++)
|
|
free_irq(adapter->msix_entries[vector].vector, netdev);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* igbvf_irq_disable - Mask off interrupt generation on the NIC
|
|
**/
|
|
static void igbvf_irq_disable(struct igbvf_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
ew32(EIMC, ~0);
|
|
|
|
if (adapter->msix_entries)
|
|
ew32(EIAC, 0);
|
|
}
|
|
|
|
/**
|
|
* igbvf_irq_enable - Enable default interrupt generation settings
|
|
**/
|
|
static void igbvf_irq_enable(struct igbvf_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
ew32(EIAC, adapter->eims_enable_mask);
|
|
ew32(EIAM, adapter->eims_enable_mask);
|
|
ew32(EIMS, adapter->eims_enable_mask);
|
|
}
|
|
|
|
/**
|
|
* igbvf_poll - NAPI Rx polling callback
|
|
* @napi: struct associated with this polling callback
|
|
* @budget: amount of packets driver is allowed to process this poll
|
|
**/
|
|
static int igbvf_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct igbvf_ring *rx_ring = container_of(napi, struct igbvf_ring, napi);
|
|
struct igbvf_adapter *adapter = rx_ring->adapter;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
int work_done = 0;
|
|
|
|
igbvf_clean_rx_irq(adapter, &work_done, budget);
|
|
|
|
/* If not enough Rx work done, exit the polling mode */
|
|
if (work_done < budget) {
|
|
napi_complete(napi);
|
|
|
|
if (adapter->itr_setting & 3)
|
|
igbvf_set_itr(adapter);
|
|
|
|
if (!test_bit(__IGBVF_DOWN, &adapter->state))
|
|
ew32(EIMS, adapter->rx_ring->eims_value);
|
|
}
|
|
|
|
return work_done;
|
|
}
|
|
|
|
/**
|
|
* igbvf_set_rlpml - set receive large packet maximum length
|
|
* @adapter: board private structure
|
|
*
|
|
* Configure the maximum size of packets that will be received
|
|
*/
|
|
static void igbvf_set_rlpml(struct igbvf_adapter *adapter)
|
|
{
|
|
int max_frame_size = adapter->max_frame_size;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
if (adapter->vlgrp)
|
|
max_frame_size += VLAN_TAG_SIZE;
|
|
|
|
e1000_rlpml_set_vf(hw, max_frame_size);
|
|
}
|
|
|
|
static void igbvf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
if (hw->mac.ops.set_vfta(hw, vid, true))
|
|
dev_err(&adapter->pdev->dev, "Failed to add vlan id %d\n", vid);
|
|
}
|
|
|
|
static void igbvf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
igbvf_irq_disable(adapter);
|
|
vlan_group_set_device(adapter->vlgrp, vid, NULL);
|
|
|
|
if (!test_bit(__IGBVF_DOWN, &adapter->state))
|
|
igbvf_irq_enable(adapter);
|
|
|
|
if (hw->mac.ops.set_vfta(hw, vid, false))
|
|
dev_err(&adapter->pdev->dev,
|
|
"Failed to remove vlan id %d\n", vid);
|
|
}
|
|
|
|
static void igbvf_vlan_rx_register(struct net_device *netdev,
|
|
struct vlan_group *grp)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
adapter->vlgrp = grp;
|
|
}
|
|
|
|
static void igbvf_restore_vlan(struct igbvf_adapter *adapter)
|
|
{
|
|
u16 vid;
|
|
|
|
if (!adapter->vlgrp)
|
|
return;
|
|
|
|
for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
|
|
if (!vlan_group_get_device(adapter->vlgrp, vid))
|
|
continue;
|
|
igbvf_vlan_rx_add_vid(adapter->netdev, vid);
|
|
}
|
|
|
|
igbvf_set_rlpml(adapter);
|
|
}
|
|
|
|
/**
|
|
* igbvf_configure_tx - Configure Transmit Unit after Reset
|
|
* @adapter: board private structure
|
|
*
|
|
* Configure the Tx unit of the MAC after a reset.
|
|
**/
|
|
static void igbvf_configure_tx(struct igbvf_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct igbvf_ring *tx_ring = adapter->tx_ring;
|
|
u64 tdba;
|
|
u32 txdctl, dca_txctrl;
|
|
|
|
/* disable transmits */
|
|
txdctl = er32(TXDCTL(0));
|
|
ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE);
|
|
msleep(10);
|
|
|
|
/* Setup the HW Tx Head and Tail descriptor pointers */
|
|
ew32(TDLEN(0), tx_ring->count * sizeof(union e1000_adv_tx_desc));
|
|
tdba = tx_ring->dma;
|
|
ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32)));
|
|
ew32(TDBAH(0), (tdba >> 32));
|
|
ew32(TDH(0), 0);
|
|
ew32(TDT(0), 0);
|
|
tx_ring->head = E1000_TDH(0);
|
|
tx_ring->tail = E1000_TDT(0);
|
|
|
|
/* Turn off Relaxed Ordering on head write-backs. The writebacks
|
|
* MUST be delivered in order or it will completely screw up
|
|
* our bookeeping.
|
|
*/
|
|
dca_txctrl = er32(DCA_TXCTRL(0));
|
|
dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
|
|
ew32(DCA_TXCTRL(0), dca_txctrl);
|
|
|
|
/* enable transmits */
|
|
txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
|
|
ew32(TXDCTL(0), txdctl);
|
|
|
|
/* Setup Transmit Descriptor Settings for eop descriptor */
|
|
adapter->txd_cmd = E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_IFCS;
|
|
|
|
/* enable Report Status bit */
|
|
adapter->txd_cmd |= E1000_ADVTXD_DCMD_RS;
|
|
|
|
adapter->tx_queue_len = adapter->netdev->tx_queue_len;
|
|
}
|
|
|
|
/**
|
|
* igbvf_setup_srrctl - configure the receive control registers
|
|
* @adapter: Board private structure
|
|
**/
|
|
static void igbvf_setup_srrctl(struct igbvf_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 srrctl = 0;
|
|
|
|
srrctl &= ~(E1000_SRRCTL_DESCTYPE_MASK |
|
|
E1000_SRRCTL_BSIZEHDR_MASK |
|
|
E1000_SRRCTL_BSIZEPKT_MASK);
|
|
|
|
/* Enable queue drop to avoid head of line blocking */
|
|
srrctl |= E1000_SRRCTL_DROP_EN;
|
|
|
|
/* Setup buffer sizes */
|
|
srrctl |= ALIGN(adapter->rx_buffer_len, 1024) >>
|
|
E1000_SRRCTL_BSIZEPKT_SHIFT;
|
|
|
|
if (adapter->rx_buffer_len < 2048) {
|
|
adapter->rx_ps_hdr_size = 0;
|
|
srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
|
|
} else {
|
|
adapter->rx_ps_hdr_size = 128;
|
|
srrctl |= adapter->rx_ps_hdr_size <<
|
|
E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
|
|
srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
|
|
}
|
|
|
|
ew32(SRRCTL(0), srrctl);
|
|
}
|
|
|
|
/**
|
|
* igbvf_configure_rx - Configure Receive Unit after Reset
|
|
* @adapter: board private structure
|
|
*
|
|
* Configure the Rx unit of the MAC after a reset.
|
|
**/
|
|
static void igbvf_configure_rx(struct igbvf_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct igbvf_ring *rx_ring = adapter->rx_ring;
|
|
u64 rdba;
|
|
u32 rdlen, rxdctl;
|
|
|
|
/* disable receives */
|
|
rxdctl = er32(RXDCTL(0));
|
|
ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE);
|
|
msleep(10);
|
|
|
|
rdlen = rx_ring->count * sizeof(union e1000_adv_rx_desc);
|
|
|
|
/*
|
|
* Setup the HW Rx Head and Tail Descriptor Pointers and
|
|
* the Base and Length of the Rx Descriptor Ring
|
|
*/
|
|
rdba = rx_ring->dma;
|
|
ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32)));
|
|
ew32(RDBAH(0), (rdba >> 32));
|
|
ew32(RDLEN(0), rx_ring->count * sizeof(union e1000_adv_rx_desc));
|
|
rx_ring->head = E1000_RDH(0);
|
|
rx_ring->tail = E1000_RDT(0);
|
|
ew32(RDH(0), 0);
|
|
ew32(RDT(0), 0);
|
|
|
|
rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
|
|
rxdctl &= 0xFFF00000;
|
|
rxdctl |= IGBVF_RX_PTHRESH;
|
|
rxdctl |= IGBVF_RX_HTHRESH << 8;
|
|
rxdctl |= IGBVF_RX_WTHRESH << 16;
|
|
|
|
igbvf_set_rlpml(adapter);
|
|
|
|
/* enable receives */
|
|
ew32(RXDCTL(0), rxdctl);
|
|
}
|
|
|
|
/**
|
|
* igbvf_set_multi - Multicast and Promiscuous mode set
|
|
* @netdev: network interface device structure
|
|
*
|
|
* The set_multi entry point is called whenever the multicast address
|
|
* list or the network interface flags are updated. This routine is
|
|
* responsible for configuring the hardware for proper multicast,
|
|
* promiscuous mode, and all-multi behavior.
|
|
**/
|
|
static void igbvf_set_multi(struct net_device *netdev)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct dev_mc_list *mc_ptr;
|
|
u8 *mta_list = NULL;
|
|
int i;
|
|
|
|
if (netdev->mc_count) {
|
|
mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC);
|
|
if (!mta_list) {
|
|
dev_err(&adapter->pdev->dev,
|
|
"failed to allocate multicast filter list\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* prepare a packed array of only addresses. */
|
|
mc_ptr = netdev->mc_list;
|
|
|
|
for (i = 0; i < netdev->mc_count; i++) {
|
|
if (!mc_ptr)
|
|
break;
|
|
memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr,
|
|
ETH_ALEN);
|
|
mc_ptr = mc_ptr->next;
|
|
}
|
|
|
|
hw->mac.ops.update_mc_addr_list(hw, mta_list, i, 0, 0);
|
|
kfree(mta_list);
|
|
}
|
|
|
|
/**
|
|
* igbvf_configure - configure the hardware for Rx and Tx
|
|
* @adapter: private board structure
|
|
**/
|
|
static void igbvf_configure(struct igbvf_adapter *adapter)
|
|
{
|
|
igbvf_set_multi(adapter->netdev);
|
|
|
|
igbvf_restore_vlan(adapter);
|
|
|
|
igbvf_configure_tx(adapter);
|
|
igbvf_setup_srrctl(adapter);
|
|
igbvf_configure_rx(adapter);
|
|
igbvf_alloc_rx_buffers(adapter->rx_ring,
|
|
igbvf_desc_unused(adapter->rx_ring));
|
|
}
|
|
|
|
/* igbvf_reset - bring the hardware into a known good state
|
|
*
|
|
* This function boots the hardware and enables some settings that
|
|
* require a configuration cycle of the hardware - those cannot be
|
|
* set/changed during runtime. After reset the device needs to be
|
|
* properly configured for Rx, Tx etc.
|
|
*/
|
|
static void igbvf_reset(struct igbvf_adapter *adapter)
|
|
{
|
|
struct e1000_mac_info *mac = &adapter->hw.mac;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
/* Allow time for pending master requests to run */
|
|
if (mac->ops.reset_hw(hw))
|
|
dev_err(&adapter->pdev->dev, "PF still resetting\n");
|
|
|
|
mac->ops.init_hw(hw);
|
|
|
|
if (is_valid_ether_addr(adapter->hw.mac.addr)) {
|
|
memcpy(netdev->dev_addr, adapter->hw.mac.addr,
|
|
netdev->addr_len);
|
|
memcpy(netdev->perm_addr, adapter->hw.mac.addr,
|
|
netdev->addr_len);
|
|
}
|
|
}
|
|
|
|
int igbvf_up(struct igbvf_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
/* hardware has been reset, we need to reload some things */
|
|
igbvf_configure(adapter);
|
|
|
|
clear_bit(__IGBVF_DOWN, &adapter->state);
|
|
|
|
napi_enable(&adapter->rx_ring->napi);
|
|
if (adapter->msix_entries)
|
|
igbvf_configure_msix(adapter);
|
|
|
|
/* Clear any pending interrupts. */
|
|
er32(EICR);
|
|
igbvf_irq_enable(adapter);
|
|
|
|
/* start the watchdog */
|
|
hw->mac.get_link_status = 1;
|
|
mod_timer(&adapter->watchdog_timer, jiffies + 1);
|
|
|
|
|
|
return 0;
|
|
}
|
|
|
|
void igbvf_down(struct igbvf_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 rxdctl, txdctl;
|
|
|
|
/*
|
|
* signal that we're down so the interrupt handler does not
|
|
* reschedule our watchdog timer
|
|
*/
|
|
set_bit(__IGBVF_DOWN, &adapter->state);
|
|
|
|
/* disable receives in the hardware */
|
|
rxdctl = er32(RXDCTL(0));
|
|
ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE);
|
|
|
|
netif_stop_queue(netdev);
|
|
|
|
/* disable transmits in the hardware */
|
|
txdctl = er32(TXDCTL(0));
|
|
ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE);
|
|
|
|
/* flush both disables and wait for them to finish */
|
|
e1e_flush();
|
|
msleep(10);
|
|
|
|
napi_disable(&adapter->rx_ring->napi);
|
|
|
|
igbvf_irq_disable(adapter);
|
|
|
|
del_timer_sync(&adapter->watchdog_timer);
|
|
|
|
netdev->tx_queue_len = adapter->tx_queue_len;
|
|
netif_carrier_off(netdev);
|
|
|
|
/* record the stats before reset*/
|
|
igbvf_update_stats(adapter);
|
|
|
|
adapter->link_speed = 0;
|
|
adapter->link_duplex = 0;
|
|
|
|
igbvf_reset(adapter);
|
|
igbvf_clean_tx_ring(adapter->tx_ring);
|
|
igbvf_clean_rx_ring(adapter->rx_ring);
|
|
}
|
|
|
|
void igbvf_reinit_locked(struct igbvf_adapter *adapter)
|
|
{
|
|
might_sleep();
|
|
while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
|
|
msleep(1);
|
|
igbvf_down(adapter);
|
|
igbvf_up(adapter);
|
|
clear_bit(__IGBVF_RESETTING, &adapter->state);
|
|
}
|
|
|
|
/**
|
|
* igbvf_sw_init - Initialize general software structures (struct igbvf_adapter)
|
|
* @adapter: board private structure to initialize
|
|
*
|
|
* igbvf_sw_init initializes the Adapter private data structure.
|
|
* Fields are initialized based on PCI device information and
|
|
* OS network device settings (MTU size).
|
|
**/
|
|
static int __devinit igbvf_sw_init(struct igbvf_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
s32 rc;
|
|
|
|
adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
|
|
adapter->rx_ps_hdr_size = 0;
|
|
adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
|
|
adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
|
|
|
|
adapter->tx_int_delay = 8;
|
|
adapter->tx_abs_int_delay = 32;
|
|
adapter->rx_int_delay = 0;
|
|
adapter->rx_abs_int_delay = 8;
|
|
adapter->itr_setting = 3;
|
|
adapter->itr = 20000;
|
|
|
|
/* Set various function pointers */
|
|
adapter->ei->init_ops(&adapter->hw);
|
|
|
|
rc = adapter->hw.mac.ops.init_params(&adapter->hw);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = adapter->hw.mbx.ops.init_params(&adapter->hw);
|
|
if (rc)
|
|
return rc;
|
|
|
|
igbvf_set_interrupt_capability(adapter);
|
|
|
|
if (igbvf_alloc_queues(adapter))
|
|
return -ENOMEM;
|
|
|
|
spin_lock_init(&adapter->tx_queue_lock);
|
|
|
|
/* Explicitly disable IRQ since the NIC can be in any state. */
|
|
igbvf_irq_disable(adapter);
|
|
|
|
spin_lock_init(&adapter->stats_lock);
|
|
|
|
set_bit(__IGBVF_DOWN, &adapter->state);
|
|
return 0;
|
|
}
|
|
|
|
static void igbvf_initialize_last_counter_stats(struct igbvf_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
adapter->stats.last_gprc = er32(VFGPRC);
|
|
adapter->stats.last_gorc = er32(VFGORC);
|
|
adapter->stats.last_gptc = er32(VFGPTC);
|
|
adapter->stats.last_gotc = er32(VFGOTC);
|
|
adapter->stats.last_mprc = er32(VFMPRC);
|
|
adapter->stats.last_gotlbc = er32(VFGOTLBC);
|
|
adapter->stats.last_gptlbc = er32(VFGPTLBC);
|
|
adapter->stats.last_gorlbc = er32(VFGORLBC);
|
|
adapter->stats.last_gprlbc = er32(VFGPRLBC);
|
|
|
|
adapter->stats.base_gprc = er32(VFGPRC);
|
|
adapter->stats.base_gorc = er32(VFGORC);
|
|
adapter->stats.base_gptc = er32(VFGPTC);
|
|
adapter->stats.base_gotc = er32(VFGOTC);
|
|
adapter->stats.base_mprc = er32(VFMPRC);
|
|
adapter->stats.base_gotlbc = er32(VFGOTLBC);
|
|
adapter->stats.base_gptlbc = er32(VFGPTLBC);
|
|
adapter->stats.base_gorlbc = er32(VFGORLBC);
|
|
adapter->stats.base_gprlbc = er32(VFGPRLBC);
|
|
}
|
|
|
|
/**
|
|
* igbvf_open - Called when a network interface is made active
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Returns 0 on success, negative value on failure
|
|
*
|
|
* The open entry point is called when a network interface is made
|
|
* active by the system (IFF_UP). At this point all resources needed
|
|
* for transmit and receive operations are allocated, the interrupt
|
|
* handler is registered with the OS, the watchdog timer is started,
|
|
* and the stack is notified that the interface is ready.
|
|
**/
|
|
static int igbvf_open(struct net_device *netdev)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
int err;
|
|
|
|
/* disallow open during test */
|
|
if (test_bit(__IGBVF_TESTING, &adapter->state))
|
|
return -EBUSY;
|
|
|
|
/* allocate transmit descriptors */
|
|
err = igbvf_setup_tx_resources(adapter, adapter->tx_ring);
|
|
if (err)
|
|
goto err_setup_tx;
|
|
|
|
/* allocate receive descriptors */
|
|
err = igbvf_setup_rx_resources(adapter, adapter->rx_ring);
|
|
if (err)
|
|
goto err_setup_rx;
|
|
|
|
/*
|
|
* before we allocate an interrupt, we must be ready to handle it.
|
|
* Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
|
|
* as soon as we call pci_request_irq, so we have to setup our
|
|
* clean_rx handler before we do so.
|
|
*/
|
|
igbvf_configure(adapter);
|
|
|
|
err = igbvf_request_irq(adapter);
|
|
if (err)
|
|
goto err_req_irq;
|
|
|
|
/* From here on the code is the same as igbvf_up() */
|
|
clear_bit(__IGBVF_DOWN, &adapter->state);
|
|
|
|
napi_enable(&adapter->rx_ring->napi);
|
|
|
|
/* clear any pending interrupts */
|
|
er32(EICR);
|
|
|
|
igbvf_irq_enable(adapter);
|
|
|
|
/* start the watchdog */
|
|
hw->mac.get_link_status = 1;
|
|
mod_timer(&adapter->watchdog_timer, jiffies + 1);
|
|
|
|
return 0;
|
|
|
|
err_req_irq:
|
|
igbvf_free_rx_resources(adapter->rx_ring);
|
|
err_setup_rx:
|
|
igbvf_free_tx_resources(adapter->tx_ring);
|
|
err_setup_tx:
|
|
igbvf_reset(adapter);
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* igbvf_close - Disables a network interface
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Returns 0, this is not allowed to fail
|
|
*
|
|
* The close entry point is called when an interface is de-activated
|
|
* by the OS. The hardware is still under the drivers control, but
|
|
* needs to be disabled. A global MAC reset is issued to stop the
|
|
* hardware, and all transmit and receive resources are freed.
|
|
**/
|
|
static int igbvf_close(struct net_device *netdev)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state));
|
|
igbvf_down(adapter);
|
|
|
|
igbvf_free_irq(adapter);
|
|
|
|
igbvf_free_tx_resources(adapter->tx_ring);
|
|
igbvf_free_rx_resources(adapter->rx_ring);
|
|
|
|
return 0;
|
|
}
|
|
/**
|
|
* igbvf_set_mac - Change the Ethernet Address of the NIC
|
|
* @netdev: network interface device structure
|
|
* @p: pointer to an address structure
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
**/
|
|
static int igbvf_set_mac(struct net_device *netdev, void *p)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct sockaddr *addr = p;
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
|
|
|
|
hw->mac.ops.rar_set(hw, hw->mac.addr, 0);
|
|
|
|
if (memcmp(addr->sa_data, hw->mac.addr, 6))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define UPDATE_VF_COUNTER(reg, name) \
|
|
{ \
|
|
u32 current_counter = er32(reg); \
|
|
if (current_counter < adapter->stats.last_##name) \
|
|
adapter->stats.name += 0x100000000LL; \
|
|
adapter->stats.last_##name = current_counter; \
|
|
adapter->stats.name &= 0xFFFFFFFF00000000LL; \
|
|
adapter->stats.name |= current_counter; \
|
|
}
|
|
|
|
/**
|
|
* igbvf_update_stats - Update the board statistics counters
|
|
* @adapter: board private structure
|
|
**/
|
|
void igbvf_update_stats(struct igbvf_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
/*
|
|
* Prevent stats update while adapter is being reset, link is down
|
|
* or if the pci connection is down.
|
|
*/
|
|
if (adapter->link_speed == 0)
|
|
return;
|
|
|
|
if (test_bit(__IGBVF_RESETTING, &adapter->state))
|
|
return;
|
|
|
|
if (pci_channel_offline(pdev))
|
|
return;
|
|
|
|
UPDATE_VF_COUNTER(VFGPRC, gprc);
|
|
UPDATE_VF_COUNTER(VFGORC, gorc);
|
|
UPDATE_VF_COUNTER(VFGPTC, gptc);
|
|
UPDATE_VF_COUNTER(VFGOTC, gotc);
|
|
UPDATE_VF_COUNTER(VFMPRC, mprc);
|
|
UPDATE_VF_COUNTER(VFGOTLBC, gotlbc);
|
|
UPDATE_VF_COUNTER(VFGPTLBC, gptlbc);
|
|
UPDATE_VF_COUNTER(VFGORLBC, gorlbc);
|
|
UPDATE_VF_COUNTER(VFGPRLBC, gprlbc);
|
|
|
|
/* Fill out the OS statistics structure */
|
|
adapter->net_stats.multicast = adapter->stats.mprc;
|
|
}
|
|
|
|
static void igbvf_print_link_info(struct igbvf_adapter *adapter)
|
|
{
|
|
dev_info(&adapter->pdev->dev, "Link is Up %d Mbps %s\n",
|
|
adapter->link_speed,
|
|
((adapter->link_duplex == FULL_DUPLEX) ?
|
|
"Full Duplex" : "Half Duplex"));
|
|
}
|
|
|
|
static bool igbvf_has_link(struct igbvf_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
s32 ret_val = E1000_SUCCESS;
|
|
bool link_active;
|
|
|
|
ret_val = hw->mac.ops.check_for_link(hw);
|
|
link_active = !hw->mac.get_link_status;
|
|
|
|
/* if check for link returns error we will need to reset */
|
|
if (ret_val)
|
|
schedule_work(&adapter->reset_task);
|
|
|
|
return link_active;
|
|
}
|
|
|
|
/**
|
|
* igbvf_watchdog - Timer Call-back
|
|
* @data: pointer to adapter cast into an unsigned long
|
|
**/
|
|
static void igbvf_watchdog(unsigned long data)
|
|
{
|
|
struct igbvf_adapter *adapter = (struct igbvf_adapter *) data;
|
|
|
|
/* Do the rest outside of interrupt context */
|
|
schedule_work(&adapter->watchdog_task);
|
|
}
|
|
|
|
static void igbvf_watchdog_task(struct work_struct *work)
|
|
{
|
|
struct igbvf_adapter *adapter = container_of(work,
|
|
struct igbvf_adapter,
|
|
watchdog_task);
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct e1000_mac_info *mac = &adapter->hw.mac;
|
|
struct igbvf_ring *tx_ring = adapter->tx_ring;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 link;
|
|
int tx_pending = 0;
|
|
|
|
link = igbvf_has_link(adapter);
|
|
|
|
if (link) {
|
|
if (!netif_carrier_ok(netdev)) {
|
|
bool txb2b = 1;
|
|
|
|
mac->ops.get_link_up_info(&adapter->hw,
|
|
&adapter->link_speed,
|
|
&adapter->link_duplex);
|
|
igbvf_print_link_info(adapter);
|
|
|
|
/*
|
|
* tweak tx_queue_len according to speed/duplex
|
|
* and adjust the timeout factor
|
|
*/
|
|
netdev->tx_queue_len = adapter->tx_queue_len;
|
|
adapter->tx_timeout_factor = 1;
|
|
switch (adapter->link_speed) {
|
|
case SPEED_10:
|
|
txb2b = 0;
|
|
netdev->tx_queue_len = 10;
|
|
adapter->tx_timeout_factor = 16;
|
|
break;
|
|
case SPEED_100:
|
|
txb2b = 0;
|
|
netdev->tx_queue_len = 100;
|
|
/* maybe add some timeout factor ? */
|
|
break;
|
|
}
|
|
|
|
netif_carrier_on(netdev);
|
|
netif_wake_queue(netdev);
|
|
}
|
|
} else {
|
|
if (netif_carrier_ok(netdev)) {
|
|
adapter->link_speed = 0;
|
|
adapter->link_duplex = 0;
|
|
dev_info(&adapter->pdev->dev, "Link is Down\n");
|
|
netif_carrier_off(netdev);
|
|
netif_stop_queue(netdev);
|
|
}
|
|
}
|
|
|
|
if (netif_carrier_ok(netdev)) {
|
|
igbvf_update_stats(adapter);
|
|
} else {
|
|
tx_pending = (igbvf_desc_unused(tx_ring) + 1 <
|
|
tx_ring->count);
|
|
if (tx_pending) {
|
|
/*
|
|
* We've lost link, so the controller stops DMA,
|
|
* but we've got queued Tx work that's never going
|
|
* to get done, so reset controller to flush Tx.
|
|
* (Do the reset outside of interrupt context).
|
|
*/
|
|
adapter->tx_timeout_count++;
|
|
schedule_work(&adapter->reset_task);
|
|
}
|
|
}
|
|
|
|
/* Cause software interrupt to ensure Rx ring is cleaned */
|
|
ew32(EICS, adapter->rx_ring->eims_value);
|
|
|
|
/* Force detection of hung controller every watchdog period */
|
|
adapter->detect_tx_hung = 1;
|
|
|
|
/* Reset the timer */
|
|
if (!test_bit(__IGBVF_DOWN, &adapter->state))
|
|
mod_timer(&adapter->watchdog_timer,
|
|
round_jiffies(jiffies + (2 * HZ)));
|
|
}
|
|
|
|
#define IGBVF_TX_FLAGS_CSUM 0x00000001
|
|
#define IGBVF_TX_FLAGS_VLAN 0x00000002
|
|
#define IGBVF_TX_FLAGS_TSO 0x00000004
|
|
#define IGBVF_TX_FLAGS_IPV4 0x00000008
|
|
#define IGBVF_TX_FLAGS_VLAN_MASK 0xffff0000
|
|
#define IGBVF_TX_FLAGS_VLAN_SHIFT 16
|
|
|
|
static int igbvf_tso(struct igbvf_adapter *adapter,
|
|
struct igbvf_ring *tx_ring,
|
|
struct sk_buff *skb, u32 tx_flags, u8 *hdr_len)
|
|
{
|
|
struct e1000_adv_tx_context_desc *context_desc;
|
|
unsigned int i;
|
|
int err;
|
|
struct igbvf_buffer *buffer_info;
|
|
u32 info = 0, tu_cmd = 0;
|
|
u32 mss_l4len_idx, l4len;
|
|
*hdr_len = 0;
|
|
|
|
if (skb_header_cloned(skb)) {
|
|
err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
|
|
if (err) {
|
|
dev_err(&adapter->pdev->dev,
|
|
"igbvf_tso returning an error\n");
|
|
return err;
|
|
}
|
|
}
|
|
|
|
l4len = tcp_hdrlen(skb);
|
|
*hdr_len += l4len;
|
|
|
|
if (skb->protocol == htons(ETH_P_IP)) {
|
|
struct iphdr *iph = ip_hdr(skb);
|
|
iph->tot_len = 0;
|
|
iph->check = 0;
|
|
tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
|
|
iph->daddr, 0,
|
|
IPPROTO_TCP,
|
|
0);
|
|
} else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
|
|
ipv6_hdr(skb)->payload_len = 0;
|
|
tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
|
|
&ipv6_hdr(skb)->daddr,
|
|
0, IPPROTO_TCP, 0);
|
|
}
|
|
|
|
i = tx_ring->next_to_use;
|
|
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i);
|
|
/* VLAN MACLEN IPLEN */
|
|
if (tx_flags & IGBVF_TX_FLAGS_VLAN)
|
|
info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK);
|
|
info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
|
|
*hdr_len += skb_network_offset(skb);
|
|
info |= (skb_transport_header(skb) - skb_network_header(skb));
|
|
*hdr_len += (skb_transport_header(skb) - skb_network_header(skb));
|
|
context_desc->vlan_macip_lens = cpu_to_le32(info);
|
|
|
|
/* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
|
|
tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
|
|
|
|
if (skb->protocol == htons(ETH_P_IP))
|
|
tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
|
|
tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
|
|
|
|
context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
|
|
|
|
/* MSS L4LEN IDX */
|
|
mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT);
|
|
mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT);
|
|
|
|
context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
|
|
context_desc->seqnum_seed = 0;
|
|
|
|
buffer_info->time_stamp = jiffies;
|
|
buffer_info->next_to_watch = i;
|
|
buffer_info->dma = 0;
|
|
i++;
|
|
if (i == tx_ring->count)
|
|
i = 0;
|
|
|
|
tx_ring->next_to_use = i;
|
|
|
|
return true;
|
|
}
|
|
|
|
static inline bool igbvf_tx_csum(struct igbvf_adapter *adapter,
|
|
struct igbvf_ring *tx_ring,
|
|
struct sk_buff *skb, u32 tx_flags)
|
|
{
|
|
struct e1000_adv_tx_context_desc *context_desc;
|
|
unsigned int i;
|
|
struct igbvf_buffer *buffer_info;
|
|
u32 info = 0, tu_cmd = 0;
|
|
|
|
if ((skb->ip_summed == CHECKSUM_PARTIAL) ||
|
|
(tx_flags & IGBVF_TX_FLAGS_VLAN)) {
|
|
i = tx_ring->next_to_use;
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i);
|
|
|
|
if (tx_flags & IGBVF_TX_FLAGS_VLAN)
|
|
info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK);
|
|
|
|
info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL)
|
|
info |= (skb_transport_header(skb) -
|
|
skb_network_header(skb));
|
|
|
|
|
|
context_desc->vlan_macip_lens = cpu_to_le32(info);
|
|
|
|
tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
|
|
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) {
|
|
switch (skb->protocol) {
|
|
case __constant_htons(ETH_P_IP):
|
|
tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
|
|
if (ip_hdr(skb)->protocol == IPPROTO_TCP)
|
|
tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
|
|
break;
|
|
case __constant_htons(ETH_P_IPV6):
|
|
if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
|
|
tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
|
|
context_desc->seqnum_seed = 0;
|
|
context_desc->mss_l4len_idx = 0;
|
|
|
|
buffer_info->time_stamp = jiffies;
|
|
buffer_info->next_to_watch = i;
|
|
buffer_info->dma = 0;
|
|
i++;
|
|
if (i == tx_ring->count)
|
|
i = 0;
|
|
tx_ring->next_to_use = i;
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static int igbvf_maybe_stop_tx(struct net_device *netdev, int size)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
/* there is enough descriptors then we don't need to worry */
|
|
if (igbvf_desc_unused(adapter->tx_ring) >= size)
|
|
return 0;
|
|
|
|
netif_stop_queue(netdev);
|
|
|
|
smp_mb();
|
|
|
|
/* We need to check again just in case room has been made available */
|
|
if (igbvf_desc_unused(adapter->tx_ring) < size)
|
|
return -EBUSY;
|
|
|
|
netif_wake_queue(netdev);
|
|
|
|
++adapter->restart_queue;
|
|
return 0;
|
|
}
|
|
|
|
#define IGBVF_MAX_TXD_PWR 16
|
|
#define IGBVF_MAX_DATA_PER_TXD (1 << IGBVF_MAX_TXD_PWR)
|
|
|
|
static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter,
|
|
struct igbvf_ring *tx_ring,
|
|
struct sk_buff *skb,
|
|
unsigned int first)
|
|
{
|
|
struct igbvf_buffer *buffer_info;
|
|
unsigned int len = skb_headlen(skb);
|
|
unsigned int count = 0, i;
|
|
unsigned int f;
|
|
dma_addr_t *map;
|
|
|
|
i = tx_ring->next_to_use;
|
|
|
|
if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) {
|
|
dev_err(&adapter->pdev->dev, "TX DMA map failed\n");
|
|
return 0;
|
|
}
|
|
|
|
map = skb_shinfo(skb)->dma_maps;
|
|
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD);
|
|
buffer_info->length = len;
|
|
/* set time_stamp *before* dma to help avoid a possible race */
|
|
buffer_info->time_stamp = jiffies;
|
|
buffer_info->next_to_watch = i;
|
|
buffer_info->dma = skb_shinfo(skb)->dma_head;
|
|
|
|
for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) {
|
|
struct skb_frag_struct *frag;
|
|
|
|
i++;
|
|
if (i == tx_ring->count)
|
|
i = 0;
|
|
|
|
frag = &skb_shinfo(skb)->frags[f];
|
|
len = frag->size;
|
|
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD);
|
|
buffer_info->length = len;
|
|
buffer_info->time_stamp = jiffies;
|
|
buffer_info->next_to_watch = i;
|
|
buffer_info->dma = map[count];
|
|
count++;
|
|
}
|
|
|
|
tx_ring->buffer_info[i].skb = skb;
|
|
tx_ring->buffer_info[first].next_to_watch = i;
|
|
|
|
return count + 1;
|
|
}
|
|
|
|
static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter,
|
|
struct igbvf_ring *tx_ring,
|
|
int tx_flags, int count, u32 paylen,
|
|
u8 hdr_len)
|
|
{
|
|
union e1000_adv_tx_desc *tx_desc = NULL;
|
|
struct igbvf_buffer *buffer_info;
|
|
u32 olinfo_status = 0, cmd_type_len;
|
|
unsigned int i;
|
|
|
|
cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS |
|
|
E1000_ADVTXD_DCMD_DEXT);
|
|
|
|
if (tx_flags & IGBVF_TX_FLAGS_VLAN)
|
|
cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
|
|
|
|
if (tx_flags & IGBVF_TX_FLAGS_TSO) {
|
|
cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
|
|
|
|
/* insert tcp checksum */
|
|
olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
|
|
|
|
/* insert ip checksum */
|
|
if (tx_flags & IGBVF_TX_FLAGS_IPV4)
|
|
olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
|
|
|
|
} else if (tx_flags & IGBVF_TX_FLAGS_CSUM) {
|
|
olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
|
|
}
|
|
|
|
olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT);
|
|
|
|
i = tx_ring->next_to_use;
|
|
while (count--) {
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
|
|
tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
|
|
tx_desc->read.cmd_type_len =
|
|
cpu_to_le32(cmd_type_len | buffer_info->length);
|
|
tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
|
|
i++;
|
|
if (i == tx_ring->count)
|
|
i = 0;
|
|
}
|
|
|
|
tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd);
|
|
/* Force memory writes to complete before letting h/w
|
|
* know there are new descriptors to fetch. (Only
|
|
* applicable for weak-ordered memory model archs,
|
|
* such as IA-64). */
|
|
wmb();
|
|
|
|
tx_ring->next_to_use = i;
|
|
writel(i, adapter->hw.hw_addr + tx_ring->tail);
|
|
/* we need this if more than one processor can write to our tail
|
|
* at a time, it syncronizes IO on IA64/Altix systems */
|
|
mmiowb();
|
|
}
|
|
|
|
static netdev_tx_t igbvf_xmit_frame_ring_adv(struct sk_buff *skb,
|
|
struct net_device *netdev,
|
|
struct igbvf_ring *tx_ring)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
unsigned int first, tx_flags = 0;
|
|
u8 hdr_len = 0;
|
|
int count = 0;
|
|
int tso = 0;
|
|
|
|
if (test_bit(__IGBVF_DOWN, &adapter->state)) {
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
if (skb->len <= 0) {
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
/*
|
|
* need: count + 4 desc gap to keep tail from touching
|
|
* + 2 desc gap to keep tail from touching head,
|
|
* + 1 desc for skb->data,
|
|
* + 1 desc for context descriptor,
|
|
* head, otherwise try next time
|
|
*/
|
|
if (igbvf_maybe_stop_tx(netdev, skb_shinfo(skb)->nr_frags + 4)) {
|
|
/* this is a hard error */
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
|
|
tx_flags |= IGBVF_TX_FLAGS_VLAN;
|
|
tx_flags |= (vlan_tx_tag_get(skb) << IGBVF_TX_FLAGS_VLAN_SHIFT);
|
|
}
|
|
|
|
if (skb->protocol == htons(ETH_P_IP))
|
|
tx_flags |= IGBVF_TX_FLAGS_IPV4;
|
|
|
|
first = tx_ring->next_to_use;
|
|
|
|
tso = skb_is_gso(skb) ?
|
|
igbvf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len) : 0;
|
|
if (unlikely(tso < 0)) {
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
if (tso)
|
|
tx_flags |= IGBVF_TX_FLAGS_TSO;
|
|
else if (igbvf_tx_csum(adapter, tx_ring, skb, tx_flags) &&
|
|
(skb->ip_summed == CHECKSUM_PARTIAL))
|
|
tx_flags |= IGBVF_TX_FLAGS_CSUM;
|
|
|
|
/*
|
|
* count reflects descriptors mapped, if 0 then mapping error
|
|
* has occured and we need to rewind the descriptor queue
|
|
*/
|
|
count = igbvf_tx_map_adv(adapter, tx_ring, skb, first);
|
|
|
|
if (count) {
|
|
igbvf_tx_queue_adv(adapter, tx_ring, tx_flags, count,
|
|
skb->len, hdr_len);
|
|
/* Make sure there is space in the ring for the next send. */
|
|
igbvf_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 4);
|
|
} else {
|
|
dev_kfree_skb_any(skb);
|
|
tx_ring->buffer_info[first].time_stamp = 0;
|
|
tx_ring->next_to_use = first;
|
|
}
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static netdev_tx_t igbvf_xmit_frame(struct sk_buff *skb,
|
|
struct net_device *netdev)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
struct igbvf_ring *tx_ring;
|
|
|
|
if (test_bit(__IGBVF_DOWN, &adapter->state)) {
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
tx_ring = &adapter->tx_ring[0];
|
|
|
|
return igbvf_xmit_frame_ring_adv(skb, netdev, tx_ring);
|
|
}
|
|
|
|
/**
|
|
* igbvf_tx_timeout - Respond to a Tx Hang
|
|
* @netdev: network interface device structure
|
|
**/
|
|
static void igbvf_tx_timeout(struct net_device *netdev)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
/* Do the reset outside of interrupt context */
|
|
adapter->tx_timeout_count++;
|
|
schedule_work(&adapter->reset_task);
|
|
}
|
|
|
|
static void igbvf_reset_task(struct work_struct *work)
|
|
{
|
|
struct igbvf_adapter *adapter;
|
|
adapter = container_of(work, struct igbvf_adapter, reset_task);
|
|
|
|
igbvf_reinit_locked(adapter);
|
|
}
|
|
|
|
/**
|
|
* igbvf_get_stats - Get System Network Statistics
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Returns the address of the device statistics structure.
|
|
* The statistics are actually updated from the timer callback.
|
|
**/
|
|
static struct net_device_stats *igbvf_get_stats(struct net_device *netdev)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
/* only return the current stats */
|
|
return &adapter->net_stats;
|
|
}
|
|
|
|
/**
|
|
* igbvf_change_mtu - Change the Maximum Transfer Unit
|
|
* @netdev: network interface device structure
|
|
* @new_mtu: new value for maximum frame size
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
**/
|
|
static int igbvf_change_mtu(struct net_device *netdev, int new_mtu)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
|
|
|
|
if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) {
|
|
dev_err(&adapter->pdev->dev, "Invalid MTU setting\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
#define MAX_STD_JUMBO_FRAME_SIZE 9234
|
|
if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
|
|
dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
|
|
msleep(1);
|
|
/* igbvf_down has a dependency on max_frame_size */
|
|
adapter->max_frame_size = max_frame;
|
|
if (netif_running(netdev))
|
|
igbvf_down(adapter);
|
|
|
|
/*
|
|
* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
|
|
* means we reserve 2 more, this pushes us to allocate from the next
|
|
* larger slab size.
|
|
* i.e. RXBUFFER_2048 --> size-4096 slab
|
|
* However with the new *_jumbo_rx* routines, jumbo receives will use
|
|
* fragmented skbs
|
|
*/
|
|
|
|
if (max_frame <= 1024)
|
|
adapter->rx_buffer_len = 1024;
|
|
else if (max_frame <= 2048)
|
|
adapter->rx_buffer_len = 2048;
|
|
else
|
|
#if (PAGE_SIZE / 2) > 16384
|
|
adapter->rx_buffer_len = 16384;
|
|
#else
|
|
adapter->rx_buffer_len = PAGE_SIZE / 2;
|
|
#endif
|
|
|
|
|
|
/* adjust allocation if LPE protects us, and we aren't using SBP */
|
|
if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
|
|
(max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
|
|
adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN +
|
|
ETH_FCS_LEN;
|
|
|
|
dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n",
|
|
netdev->mtu, new_mtu);
|
|
netdev->mtu = new_mtu;
|
|
|
|
if (netif_running(netdev))
|
|
igbvf_up(adapter);
|
|
else
|
|
igbvf_reset(adapter);
|
|
|
|
clear_bit(__IGBVF_RESETTING, &adapter->state);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int igbvf_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
|
|
{
|
|
switch (cmd) {
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static int igbvf_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
#ifdef CONFIG_PM
|
|
int retval = 0;
|
|
#endif
|
|
|
|
netif_device_detach(netdev);
|
|
|
|
if (netif_running(netdev)) {
|
|
WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state));
|
|
igbvf_down(adapter);
|
|
igbvf_free_irq(adapter);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
retval = pci_save_state(pdev);
|
|
if (retval)
|
|
return retval;
|
|
#endif
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int igbvf_resume(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
u32 err;
|
|
|
|
pci_restore_state(pdev);
|
|
err = pci_enable_device_mem(pdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
|
|
return err;
|
|
}
|
|
|
|
pci_set_master(pdev);
|
|
|
|
if (netif_running(netdev)) {
|
|
err = igbvf_request_irq(adapter);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
igbvf_reset(adapter);
|
|
|
|
if (netif_running(netdev))
|
|
igbvf_up(adapter);
|
|
|
|
netif_device_attach(netdev);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static void igbvf_shutdown(struct pci_dev *pdev)
|
|
{
|
|
igbvf_suspend(pdev, PMSG_SUSPEND);
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
/*
|
|
* Polling 'interrupt' - used by things like netconsole to send skbs
|
|
* without having to re-enable interrupts. It's not called while
|
|
* the interrupt routine is executing.
|
|
*/
|
|
static void igbvf_netpoll(struct net_device *netdev)
|
|
{
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
disable_irq(adapter->pdev->irq);
|
|
|
|
igbvf_clean_tx_irq(adapter->tx_ring);
|
|
|
|
enable_irq(adapter->pdev->irq);
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* igbvf_io_error_detected - called when PCI error is detected
|
|
* @pdev: Pointer to PCI device
|
|
* @state: The current pci connection state
|
|
*
|
|
* This function is called after a PCI bus error affecting
|
|
* this device has been detected.
|
|
*/
|
|
static pci_ers_result_t igbvf_io_error_detected(struct pci_dev *pdev,
|
|
pci_channel_state_t state)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
netif_device_detach(netdev);
|
|
|
|
if (state == pci_channel_io_perm_failure)
|
|
return PCI_ERS_RESULT_DISCONNECT;
|
|
|
|
if (netif_running(netdev))
|
|
igbvf_down(adapter);
|
|
pci_disable_device(pdev);
|
|
|
|
/* Request a slot slot reset. */
|
|
return PCI_ERS_RESULT_NEED_RESET;
|
|
}
|
|
|
|
/**
|
|
* igbvf_io_slot_reset - called after the pci bus has been reset.
|
|
* @pdev: Pointer to PCI device
|
|
*
|
|
* Restart the card from scratch, as if from a cold-boot. Implementation
|
|
* resembles the first-half of the igbvf_resume routine.
|
|
*/
|
|
static pci_ers_result_t igbvf_io_slot_reset(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
if (pci_enable_device_mem(pdev)) {
|
|
dev_err(&pdev->dev,
|
|
"Cannot re-enable PCI device after reset.\n");
|
|
return PCI_ERS_RESULT_DISCONNECT;
|
|
}
|
|
pci_set_master(pdev);
|
|
|
|
igbvf_reset(adapter);
|
|
|
|
return PCI_ERS_RESULT_RECOVERED;
|
|
}
|
|
|
|
/**
|
|
* igbvf_io_resume - called when traffic can start flowing again.
|
|
* @pdev: Pointer to PCI device
|
|
*
|
|
* This callback is called when the error recovery driver tells us that
|
|
* its OK to resume normal operation. Implementation resembles the
|
|
* second-half of the igbvf_resume routine.
|
|
*/
|
|
static void igbvf_io_resume(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
|
|
if (netif_running(netdev)) {
|
|
if (igbvf_up(adapter)) {
|
|
dev_err(&pdev->dev,
|
|
"can't bring device back up after reset\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
netif_device_attach(netdev);
|
|
}
|
|
|
|
static void igbvf_print_device_info(struct igbvf_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
dev_info(&pdev->dev, "Intel(R) 82576 Virtual Function\n");
|
|
dev_info(&pdev->dev, "Address: %02x:%02x:%02x:%02x:%02x:%02x\n",
|
|
/* MAC address */
|
|
netdev->dev_addr[0], netdev->dev_addr[1],
|
|
netdev->dev_addr[2], netdev->dev_addr[3],
|
|
netdev->dev_addr[4], netdev->dev_addr[5]);
|
|
dev_info(&pdev->dev, "MAC: %d\n", hw->mac.type);
|
|
}
|
|
|
|
static const struct net_device_ops igbvf_netdev_ops = {
|
|
.ndo_open = igbvf_open,
|
|
.ndo_stop = igbvf_close,
|
|
.ndo_start_xmit = igbvf_xmit_frame,
|
|
.ndo_get_stats = igbvf_get_stats,
|
|
.ndo_set_multicast_list = igbvf_set_multi,
|
|
.ndo_set_mac_address = igbvf_set_mac,
|
|
.ndo_change_mtu = igbvf_change_mtu,
|
|
.ndo_do_ioctl = igbvf_ioctl,
|
|
.ndo_tx_timeout = igbvf_tx_timeout,
|
|
.ndo_vlan_rx_register = igbvf_vlan_rx_register,
|
|
.ndo_vlan_rx_add_vid = igbvf_vlan_rx_add_vid,
|
|
.ndo_vlan_rx_kill_vid = igbvf_vlan_rx_kill_vid,
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
.ndo_poll_controller = igbvf_netpoll,
|
|
#endif
|
|
};
|
|
|
|
/**
|
|
* igbvf_probe - Device Initialization Routine
|
|
* @pdev: PCI device information struct
|
|
* @ent: entry in igbvf_pci_tbl
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
*
|
|
* igbvf_probe initializes an adapter identified by a pci_dev structure.
|
|
* The OS initialization, configuring of the adapter private structure,
|
|
* and a hardware reset occur.
|
|
**/
|
|
static int __devinit igbvf_probe(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
struct net_device *netdev;
|
|
struct igbvf_adapter *adapter;
|
|
struct e1000_hw *hw;
|
|
const struct igbvf_info *ei = igbvf_info_tbl[ent->driver_data];
|
|
|
|
static int cards_found;
|
|
int err, pci_using_dac;
|
|
|
|
err = pci_enable_device_mem(pdev);
|
|
if (err)
|
|
return err;
|
|
|
|
pci_using_dac = 0;
|
|
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
|
|
if (!err) {
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
|
|
if (!err)
|
|
pci_using_dac = 1;
|
|
} else {
|
|
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
if (err) {
|
|
err = pci_set_consistent_dma_mask(pdev,
|
|
DMA_BIT_MASK(32));
|
|
if (err) {
|
|
dev_err(&pdev->dev, "No usable DMA "
|
|
"configuration, aborting\n");
|
|
goto err_dma;
|
|
}
|
|
}
|
|
}
|
|
|
|
err = pci_request_regions(pdev, igbvf_driver_name);
|
|
if (err)
|
|
goto err_pci_reg;
|
|
|
|
pci_set_master(pdev);
|
|
|
|
err = -ENOMEM;
|
|
netdev = alloc_etherdev(sizeof(struct igbvf_adapter));
|
|
if (!netdev)
|
|
goto err_alloc_etherdev;
|
|
|
|
SET_NETDEV_DEV(netdev, &pdev->dev);
|
|
|
|
pci_set_drvdata(pdev, netdev);
|
|
adapter = netdev_priv(netdev);
|
|
hw = &adapter->hw;
|
|
adapter->netdev = netdev;
|
|
adapter->pdev = pdev;
|
|
adapter->ei = ei;
|
|
adapter->pba = ei->pba;
|
|
adapter->flags = ei->flags;
|
|
adapter->hw.back = adapter;
|
|
adapter->hw.mac.type = ei->mac;
|
|
adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1;
|
|
|
|
/* PCI config space info */
|
|
|
|
hw->vendor_id = pdev->vendor;
|
|
hw->device_id = pdev->device;
|
|
hw->subsystem_vendor_id = pdev->subsystem_vendor;
|
|
hw->subsystem_device_id = pdev->subsystem_device;
|
|
|
|
pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
|
|
|
|
err = -EIO;
|
|
adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0),
|
|
pci_resource_len(pdev, 0));
|
|
|
|
if (!adapter->hw.hw_addr)
|
|
goto err_ioremap;
|
|
|
|
if (ei->get_variants) {
|
|
err = ei->get_variants(adapter);
|
|
if (err)
|
|
goto err_ioremap;
|
|
}
|
|
|
|
/* setup adapter struct */
|
|
err = igbvf_sw_init(adapter);
|
|
if (err)
|
|
goto err_sw_init;
|
|
|
|
/* construct the net_device struct */
|
|
netdev->netdev_ops = &igbvf_netdev_ops;
|
|
|
|
igbvf_set_ethtool_ops(netdev);
|
|
netdev->watchdog_timeo = 5 * HZ;
|
|
strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
|
|
|
|
adapter->bd_number = cards_found++;
|
|
|
|
netdev->features = NETIF_F_SG |
|
|
NETIF_F_IP_CSUM |
|
|
NETIF_F_HW_VLAN_TX |
|
|
NETIF_F_HW_VLAN_RX |
|
|
NETIF_F_HW_VLAN_FILTER;
|
|
|
|
netdev->features |= NETIF_F_IPV6_CSUM;
|
|
netdev->features |= NETIF_F_TSO;
|
|
netdev->features |= NETIF_F_TSO6;
|
|
|
|
if (pci_using_dac)
|
|
netdev->features |= NETIF_F_HIGHDMA;
|
|
|
|
netdev->vlan_features |= NETIF_F_TSO;
|
|
netdev->vlan_features |= NETIF_F_TSO6;
|
|
netdev->vlan_features |= NETIF_F_IP_CSUM;
|
|
netdev->vlan_features |= NETIF_F_IPV6_CSUM;
|
|
netdev->vlan_features |= NETIF_F_SG;
|
|
|
|
/*reset the controller to put the device in a known good state */
|
|
err = hw->mac.ops.reset_hw(hw);
|
|
if (err) {
|
|
dev_info(&pdev->dev,
|
|
"PF still in reset state, assigning new address\n");
|
|
random_ether_addr(hw->mac.addr);
|
|
} else {
|
|
err = hw->mac.ops.read_mac_addr(hw);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Error reading MAC address\n");
|
|
goto err_hw_init;
|
|
}
|
|
}
|
|
|
|
memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
|
|
memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
|
|
|
|
if (!is_valid_ether_addr(netdev->perm_addr)) {
|
|
dev_err(&pdev->dev, "Invalid MAC Address: "
|
|
"%02x:%02x:%02x:%02x:%02x:%02x\n",
|
|
netdev->dev_addr[0], netdev->dev_addr[1],
|
|
netdev->dev_addr[2], netdev->dev_addr[3],
|
|
netdev->dev_addr[4], netdev->dev_addr[5]);
|
|
err = -EIO;
|
|
goto err_hw_init;
|
|
}
|
|
|
|
setup_timer(&adapter->watchdog_timer, &igbvf_watchdog,
|
|
(unsigned long) adapter);
|
|
|
|
INIT_WORK(&adapter->reset_task, igbvf_reset_task);
|
|
INIT_WORK(&adapter->watchdog_task, igbvf_watchdog_task);
|
|
|
|
/* ring size defaults */
|
|
adapter->rx_ring->count = 1024;
|
|
adapter->tx_ring->count = 1024;
|
|
|
|
/* reset the hardware with the new settings */
|
|
igbvf_reset(adapter);
|
|
|
|
/* tell the stack to leave us alone until igbvf_open() is called */
|
|
netif_carrier_off(netdev);
|
|
netif_stop_queue(netdev);
|
|
|
|
strcpy(netdev->name, "eth%d");
|
|
err = register_netdev(netdev);
|
|
if (err)
|
|
goto err_hw_init;
|
|
|
|
igbvf_print_device_info(adapter);
|
|
|
|
igbvf_initialize_last_counter_stats(adapter);
|
|
|
|
return 0;
|
|
|
|
err_hw_init:
|
|
kfree(adapter->tx_ring);
|
|
kfree(adapter->rx_ring);
|
|
err_sw_init:
|
|
igbvf_reset_interrupt_capability(adapter);
|
|
iounmap(adapter->hw.hw_addr);
|
|
err_ioremap:
|
|
free_netdev(netdev);
|
|
err_alloc_etherdev:
|
|
pci_release_regions(pdev);
|
|
err_pci_reg:
|
|
err_dma:
|
|
pci_disable_device(pdev);
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* igbvf_remove - Device Removal Routine
|
|
* @pdev: PCI device information struct
|
|
*
|
|
* igbvf_remove is called by the PCI subsystem to alert the driver
|
|
* that it should release a PCI device. The could be caused by a
|
|
* Hot-Plug event, or because the driver is going to be removed from
|
|
* memory.
|
|
**/
|
|
static void __devexit igbvf_remove(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct igbvf_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
/*
|
|
* flush_scheduled work may reschedule our watchdog task, so
|
|
* explicitly disable watchdog tasks from being rescheduled
|
|
*/
|
|
set_bit(__IGBVF_DOWN, &adapter->state);
|
|
del_timer_sync(&adapter->watchdog_timer);
|
|
|
|
flush_scheduled_work();
|
|
|
|
unregister_netdev(netdev);
|
|
|
|
igbvf_reset_interrupt_capability(adapter);
|
|
|
|
/*
|
|
* it is important to delete the napi struct prior to freeing the
|
|
* rx ring so that you do not end up with null pointer refs
|
|
*/
|
|
netif_napi_del(&adapter->rx_ring->napi);
|
|
kfree(adapter->tx_ring);
|
|
kfree(adapter->rx_ring);
|
|
|
|
iounmap(hw->hw_addr);
|
|
if (hw->flash_address)
|
|
iounmap(hw->flash_address);
|
|
pci_release_regions(pdev);
|
|
|
|
free_netdev(netdev);
|
|
|
|
pci_disable_device(pdev);
|
|
}
|
|
|
|
/* PCI Error Recovery (ERS) */
|
|
static struct pci_error_handlers igbvf_err_handler = {
|
|
.error_detected = igbvf_io_error_detected,
|
|
.slot_reset = igbvf_io_slot_reset,
|
|
.resume = igbvf_io_resume,
|
|
};
|
|
|
|
static struct pci_device_id igbvf_pci_tbl[] = {
|
|
{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_VF), board_vf },
|
|
{ } /* terminate list */
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, igbvf_pci_tbl);
|
|
|
|
/* PCI Device API Driver */
|
|
static struct pci_driver igbvf_driver = {
|
|
.name = igbvf_driver_name,
|
|
.id_table = igbvf_pci_tbl,
|
|
.probe = igbvf_probe,
|
|
.remove = __devexit_p(igbvf_remove),
|
|
#ifdef CONFIG_PM
|
|
/* Power Management Hooks */
|
|
.suspend = igbvf_suspend,
|
|
.resume = igbvf_resume,
|
|
#endif
|
|
.shutdown = igbvf_shutdown,
|
|
.err_handler = &igbvf_err_handler
|
|
};
|
|
|
|
/**
|
|
* igbvf_init_module - Driver Registration Routine
|
|
*
|
|
* igbvf_init_module is the first routine called when the driver is
|
|
* loaded. All it does is register with the PCI subsystem.
|
|
**/
|
|
static int __init igbvf_init_module(void)
|
|
{
|
|
int ret;
|
|
printk(KERN_INFO "%s - version %s\n",
|
|
igbvf_driver_string, igbvf_driver_version);
|
|
printk(KERN_INFO "%s\n", igbvf_copyright);
|
|
|
|
ret = pci_register_driver(&igbvf_driver);
|
|
pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, igbvf_driver_name,
|
|
PM_QOS_DEFAULT_VALUE);
|
|
|
|
return ret;
|
|
}
|
|
module_init(igbvf_init_module);
|
|
|
|
/**
|
|
* igbvf_exit_module - Driver Exit Cleanup Routine
|
|
*
|
|
* igbvf_exit_module is called just before the driver is removed
|
|
* from memory.
|
|
**/
|
|
static void __exit igbvf_exit_module(void)
|
|
{
|
|
pci_unregister_driver(&igbvf_driver);
|
|
pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, igbvf_driver_name);
|
|
}
|
|
module_exit(igbvf_exit_module);
|
|
|
|
|
|
MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
|
|
MODULE_DESCRIPTION("Intel(R) 82576 Virtual Function Network Driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_VERSION(DRV_VERSION);
|
|
|
|
/* netdev.c */
|