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authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-04-07 16:42:33 +0200
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-08-11 05:03:27 +0200
commitdee1ad47f2ee75f5146d83ca757c1b7861c34c3b (patch)
tree47cbdefe3d0f9b729724e378ad6a96eaddfd5fbc /drivers/net/ixgbevf/ixgbevf_main.c
parentchelsio: Move the Chelsio drivers (diff)
downloadlinux-dee1ad47f2ee75f5146d83ca757c1b7861c34c3b.tar.xz
linux-dee1ad47f2ee75f5146d83ca757c1b7861c34c3b.zip
intel: Move the Intel wired LAN drivers
Moves the Intel wired LAN drivers into drivers/net/ethernet/intel/ and the necessary Kconfig and Makefile changes. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ixgbevf/ixgbevf_main.c')
-rw-r--r--drivers/net/ixgbevf/ixgbevf_main.c3523
1 files changed, 0 insertions, 3523 deletions
diff --git a/drivers/net/ixgbevf/ixgbevf_main.c b/drivers/net/ixgbevf/ixgbevf_main.c
deleted file mode 100644
index 3b880a27f8d1..000000000000
--- a/drivers/net/ixgbevf/ixgbevf_main.c
+++ /dev/null
@@ -1,3523 +0,0 @@
-/*******************************************************************************
-
- Intel 82599 Virtual Function driver
- Copyright(c) 1999 - 2010 Intel Corporation.
-
- This program is free software; you can redistribute it and/or modify it
- under the terms and conditions of the GNU General Public License,
- version 2, as published by the Free Software Foundation.
-
- This program is distributed in the hope it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- more details.
-
- You should have received a copy of the GNU General Public License along with
- this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
-
- The full GNU General Public License is included in this distribution in
- the file called "COPYING".
-
- Contact Information:
- e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
- Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
-
-*******************************************************************************/
-
-
-/******************************************************************************
- Copyright (c)2006 - 2007 Myricom, Inc. for some LRO specific code
-******************************************************************************/
-#include <linux/types.h>
-#include <linux/bitops.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/netdevice.h>
-#include <linux/vmalloc.h>
-#include <linux/string.h>
-#include <linux/in.h>
-#include <linux/ip.h>
-#include <linux/tcp.h>
-#include <linux/ipv6.h>
-#include <linux/slab.h>
-#include <net/checksum.h>
-#include <net/ip6_checksum.h>
-#include <linux/ethtool.h>
-#include <linux/if_vlan.h>
-#include <linux/prefetch.h>
-
-#include "ixgbevf.h"
-
-char ixgbevf_driver_name[] = "ixgbevf";
-static const char ixgbevf_driver_string[] =
- "Intel(R) 10 Gigabit PCI Express Virtual Function Network Driver";
-
-#define DRV_VERSION "2.1.0-k"
-const char ixgbevf_driver_version[] = DRV_VERSION;
-static char ixgbevf_copyright[] =
- "Copyright (c) 2009 - 2010 Intel Corporation.";
-
-static const struct ixgbevf_info *ixgbevf_info_tbl[] = {
- [board_82599_vf] = &ixgbevf_82599_vf_info,
- [board_X540_vf] = &ixgbevf_X540_vf_info,
-};
-
-/* ixgbevf_pci_tbl - PCI Device ID Table
- *
- * Wildcard entries (PCI_ANY_ID) should come last
- * Last entry must be all 0s
- *
- * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
- * Class, Class Mask, private data (not used) }
- */
-static struct pci_device_id ixgbevf_pci_tbl[] = {
- {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_VF),
- board_82599_vf},
- {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540_VF),
- board_X540_vf},
-
- /* required last entry */
- {0, }
-};
-MODULE_DEVICE_TABLE(pci, ixgbevf_pci_tbl);
-
-MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
-MODULE_DESCRIPTION("Intel(R) 82599 Virtual Function Driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(DRV_VERSION);
-
-#define DEFAULT_DEBUG_LEVEL_SHIFT 3
-
-/* forward decls */
-static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector *q_vector);
-static void ixgbevf_write_eitr(struct ixgbevf_adapter *adapter, int v_idx,
- u32 itr_reg);
-
-static inline void ixgbevf_release_rx_desc(struct ixgbe_hw *hw,
- struct ixgbevf_ring *rx_ring,
- u32 val)
-{
- /*
- * 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();
- IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rx_ring->reg_idx), val);
-}
-
-/*
- * ixgbevf_set_ivar - set IVAR registers - maps interrupt causes to vectors
- * @adapter: pointer to adapter struct
- * @direction: 0 for Rx, 1 for Tx, -1 for other causes
- * @queue: queue to map the corresponding interrupt to
- * @msix_vector: the vector to map to the corresponding queue
- *
- */
-static void ixgbevf_set_ivar(struct ixgbevf_adapter *adapter, s8 direction,
- u8 queue, u8 msix_vector)
-{
- u32 ivar, index;
- struct ixgbe_hw *hw = &adapter->hw;
- if (direction == -1) {
- /* other causes */
- msix_vector |= IXGBE_IVAR_ALLOC_VAL;
- ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC);
- ivar &= ~0xFF;
- ivar |= msix_vector;
- IXGBE_WRITE_REG(hw, IXGBE_VTIVAR_MISC, ivar);
- } else {
- /* tx or rx causes */
- msix_vector |= IXGBE_IVAR_ALLOC_VAL;
- index = ((16 * (queue & 1)) + (8 * direction));
- ivar = IXGBE_READ_REG(hw, IXGBE_VTIVAR(queue >> 1));
- ivar &= ~(0xFF << index);
- ivar |= (msix_vector << index);
- IXGBE_WRITE_REG(hw, IXGBE_VTIVAR(queue >> 1), ivar);
- }
-}
-
-static void ixgbevf_unmap_and_free_tx_resource(struct ixgbevf_adapter *adapter,
- struct ixgbevf_tx_buffer
- *tx_buffer_info)
-{
- if (tx_buffer_info->dma) {
- if (tx_buffer_info->mapped_as_page)
- dma_unmap_page(&adapter->pdev->dev,
- tx_buffer_info->dma,
- tx_buffer_info->length,
- DMA_TO_DEVICE);
- else
- dma_unmap_single(&adapter->pdev->dev,
- tx_buffer_info->dma,
- tx_buffer_info->length,
- DMA_TO_DEVICE);
- tx_buffer_info->dma = 0;
- }
- if (tx_buffer_info->skb) {
- dev_kfree_skb_any(tx_buffer_info->skb);
- tx_buffer_info->skb = NULL;
- }
- tx_buffer_info->time_stamp = 0;
- /* tx_buffer_info must be completely set up in the transmit path */
-}
-
-#define IXGBE_MAX_TXD_PWR 14
-#define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
-
-/* Tx Descriptors needed, worst case */
-#define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
- (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
-#ifdef MAX_SKB_FRAGS
-#define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
- MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
-#else
-#define DESC_NEEDED TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD)
-#endif
-
-static void ixgbevf_tx_timeout(struct net_device *netdev);
-
-/**
- * ixgbevf_clean_tx_irq - Reclaim resources after transmit completes
- * @adapter: board private structure
- * @tx_ring: tx ring to clean
- **/
-static bool ixgbevf_clean_tx_irq(struct ixgbevf_adapter *adapter,
- struct ixgbevf_ring *tx_ring)
-{
- struct net_device *netdev = adapter->netdev;
- struct ixgbe_hw *hw = &adapter->hw;
- union ixgbe_adv_tx_desc *tx_desc, *eop_desc;
- struct ixgbevf_tx_buffer *tx_buffer_info;
- unsigned int i, eop, count = 0;
- unsigned int total_bytes = 0, total_packets = 0;
-
- i = tx_ring->next_to_clean;
- eop = tx_ring->tx_buffer_info[i].next_to_watch;
- eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
-
- while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) &&
- (count < tx_ring->work_limit)) {
- bool cleaned = false;
- rmb(); /* read buffer_info after eop_desc */
- for ( ; !cleaned; count++) {
- struct sk_buff *skb;
- tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
- tx_buffer_info = &tx_ring->tx_buffer_info[i];
- cleaned = (i == eop);
- skb = tx_buffer_info->skb;
-
- if (cleaned && 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;
- }
-
- ixgbevf_unmap_and_free_tx_resource(adapter,
- tx_buffer_info);
-
- tx_desc->wb.status = 0;
-
- i++;
- if (i == tx_ring->count)
- i = 0;
- }
-
- eop = tx_ring->tx_buffer_info[i].next_to_watch;
- eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
- }
-
- tx_ring->next_to_clean = i;
-
-#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
- if (unlikely(count && netif_carrier_ok(netdev) &&
- (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
- /* Make sure that anybody stopping the queue after this
- * sees the new next_to_clean.
- */
- smp_mb();
-#ifdef HAVE_TX_MQ
- if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) &&
- !test_bit(__IXGBEVF_DOWN, &adapter->state)) {
- netif_wake_subqueue(netdev, tx_ring->queue_index);
- ++adapter->restart_queue;
- }
-#else
- if (netif_queue_stopped(netdev) &&
- !test_bit(__IXGBEVF_DOWN, &adapter->state)) {
- netif_wake_queue(netdev);
- ++adapter->restart_queue;
- }
-#endif
- }
-
- /* re-arm the interrupt */
- if ((count >= tx_ring->work_limit) &&
- (!test_bit(__IXGBEVF_DOWN, &adapter->state))) {
- IXGBE_WRITE_REG(hw, IXGBE_VTEICS, tx_ring->v_idx);
- }
-
- tx_ring->total_bytes += total_bytes;
- tx_ring->total_packets += total_packets;
-
- netdev->stats.tx_bytes += total_bytes;
- netdev->stats.tx_packets += total_packets;
-
- return count < tx_ring->work_limit;
-}
-
-/**
- * ixgbevf_receive_skb - Send a completed packet up the stack
- * @q_vector: structure containing interrupt and ring information
- * @skb: packet to send up
- * @status: hardware indication of status of receive
- * @rx_ring: rx descriptor ring (for a specific queue) to setup
- * @rx_desc: rx descriptor
- **/
-static void ixgbevf_receive_skb(struct ixgbevf_q_vector *q_vector,
- struct sk_buff *skb, u8 status,
- struct ixgbevf_ring *ring,
- union ixgbe_adv_rx_desc *rx_desc)
-{
- struct ixgbevf_adapter *adapter = q_vector->adapter;
- bool is_vlan = (status & IXGBE_RXD_STAT_VP);
-
- if (is_vlan) {
- u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
-
- __vlan_hwaccel_put_tag(skb, tag);
- }
-
- if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL))
- napi_gro_receive(&q_vector->napi, skb);
- else
- netif_rx(skb);
-}
-
-/**
- * ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum
- * @adapter: address of board private structure
- * @status_err: hardware indication of status of receive
- * @skb: skb currently being received and modified
- **/
-static inline void ixgbevf_rx_checksum(struct ixgbevf_adapter *adapter,
- u32 status_err, struct sk_buff *skb)
-{
- skb_checksum_none_assert(skb);
-
- /* Rx csum disabled */
- if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
- return;
-
- /* if IP and error */
- if ((status_err & IXGBE_RXD_STAT_IPCS) &&
- (status_err & IXGBE_RXDADV_ERR_IPE)) {
- adapter->hw_csum_rx_error++;
- return;
- }
-
- if (!(status_err & IXGBE_RXD_STAT_L4CS))
- return;
-
- if (status_err & IXGBE_RXDADV_ERR_TCPE) {
- adapter->hw_csum_rx_error++;
- return;
- }
-
- /* It must be a TCP or UDP packet with a valid checksum */
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- adapter->hw_csum_rx_good++;
-}
-
-/**
- * ixgbevf_alloc_rx_buffers - Replace used receive buffers; packet split
- * @adapter: address of board private structure
- **/
-static void ixgbevf_alloc_rx_buffers(struct ixgbevf_adapter *adapter,
- struct ixgbevf_ring *rx_ring,
- int cleaned_count)
-{
- struct pci_dev *pdev = adapter->pdev;
- union ixgbe_adv_rx_desc *rx_desc;
- struct ixgbevf_rx_buffer *bi;
- struct sk_buff *skb;
- unsigned int i;
- unsigned int bufsz = rx_ring->rx_buf_len + NET_IP_ALIGN;
-
- i = rx_ring->next_to_use;
- bi = &rx_ring->rx_buffer_info[i];
-
- while (cleaned_count--) {
- rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
-
- if (!bi->page_dma &&
- (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) {
- if (!bi->page) {
- bi->page = netdev_alloc_page(adapter->netdev);
- if (!bi->page) {
- adapter->alloc_rx_page_failed++;
- goto no_buffers;
- }
- bi->page_offset = 0;
- } else {
- /* use a half page if we're re-using */
- bi->page_offset ^= (PAGE_SIZE / 2);
- }
-
- bi->page_dma = dma_map_page(&pdev->dev, bi->page,
- bi->page_offset,
- (PAGE_SIZE / 2),
- DMA_FROM_DEVICE);
- }
-
- skb = bi->skb;
- if (!skb) {
- skb = netdev_alloc_skb(adapter->netdev,
- bufsz);
-
- if (!skb) {
- adapter->alloc_rx_buff_failed++;
- goto no_buffers;
- }
-
- /*
- * Make buffer alignment 2 beyond a 16 byte boundary
- * this will result in a 16 byte aligned IP header after
- * the 14 byte MAC header is removed
- */
- skb_reserve(skb, NET_IP_ALIGN);
-
- bi->skb = skb;
- }
- if (!bi->dma) {
- bi->dma = dma_map_single(&pdev->dev, skb->data,
- rx_ring->rx_buf_len,
- DMA_FROM_DEVICE);
- }
- /* Refresh the desc even if buffer_addrs didn't change because
- * each write-back erases this info. */
- if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
- rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
- rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
- } else {
- rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
- }
-
- i++;
- if (i == rx_ring->count)
- i = 0;
- bi = &rx_ring->rx_buffer_info[i];
- }
-
-no_buffers:
- if (rx_ring->next_to_use != i) {
- rx_ring->next_to_use = i;
- if (i-- == 0)
- i = (rx_ring->count - 1);
-
- ixgbevf_release_rx_desc(&adapter->hw, rx_ring, i);
- }
-}
-
-static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter *adapter,
- u64 qmask)
-{
- u32 mask;
- struct ixgbe_hw *hw = &adapter->hw;
-
- mask = (qmask & 0xFFFFFFFF);
- IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask);
-}
-
-static inline u16 ixgbevf_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc)
-{
- return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info;
-}
-
-static inline u16 ixgbevf_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc)
-{
- return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
-}
-
-static bool ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector,
- struct ixgbevf_ring *rx_ring,
- int *work_done, int work_to_do)
-{
- struct ixgbevf_adapter *adapter = q_vector->adapter;
- struct pci_dev *pdev = adapter->pdev;
- union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
- struct ixgbevf_rx_buffer *rx_buffer_info, *next_buffer;
- struct sk_buff *skb;
- unsigned int i;
- u32 len, staterr;
- u16 hdr_info;
- bool cleaned = false;
- int cleaned_count = 0;
- unsigned int total_rx_bytes = 0, total_rx_packets = 0;
-
- i = rx_ring->next_to_clean;
- rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
- staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
- rx_buffer_info = &rx_ring->rx_buffer_info[i];
-
- while (staterr & IXGBE_RXD_STAT_DD) {
- u32 upper_len = 0;
- if (*work_done >= work_to_do)
- break;
- (*work_done)++;
-
- rmb(); /* read descriptor and rx_buffer_info after status DD */
- if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
- hdr_info = le16_to_cpu(ixgbevf_get_hdr_info(rx_desc));
- len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
- IXGBE_RXDADV_HDRBUFLEN_SHIFT;
- if (hdr_info & IXGBE_RXDADV_SPH)
- adapter->rx_hdr_split++;
- if (len > IXGBEVF_RX_HDR_SIZE)
- len = IXGBEVF_RX_HDR_SIZE;
- upper_len = le16_to_cpu(rx_desc->wb.upper.length);
- } else {
- len = le16_to_cpu(rx_desc->wb.upper.length);
- }
- cleaned = true;
- skb = rx_buffer_info->skb;
- prefetch(skb->data - NET_IP_ALIGN);
- rx_buffer_info->skb = NULL;
-
- if (rx_buffer_info->dma) {
- dma_unmap_single(&pdev->dev, rx_buffer_info->dma,
- rx_ring->rx_buf_len,
- DMA_FROM_DEVICE);
- rx_buffer_info->dma = 0;
- skb_put(skb, len);
- }
-
- if (upper_len) {
- dma_unmap_page(&pdev->dev, rx_buffer_info->page_dma,
- PAGE_SIZE / 2, DMA_FROM_DEVICE);
- rx_buffer_info->page_dma = 0;
- skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
- rx_buffer_info->page,
- rx_buffer_info->page_offset,
- upper_len);
-
- if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) ||
- (page_count(rx_buffer_info->page) != 1))
- rx_buffer_info->page = NULL;
- else
- get_page(rx_buffer_info->page);
-
- skb->len += upper_len;
- skb->data_len += upper_len;
- skb->truesize += upper_len;
- }
-
- i++;
- if (i == rx_ring->count)
- i = 0;
-
- next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i);
- prefetch(next_rxd);
- cleaned_count++;
-
- next_buffer = &rx_ring->rx_buffer_info[i];
-
- if (!(staterr & IXGBE_RXD_STAT_EOP)) {
- if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
- rx_buffer_info->skb = next_buffer->skb;
- rx_buffer_info->dma = next_buffer->dma;
- next_buffer->skb = skb;
- next_buffer->dma = 0;
- } else {
- skb->next = next_buffer->skb;
- skb->next->prev = skb;
- }
- adapter->non_eop_descs++;
- goto next_desc;
- }
-
- /* ERR_MASK will only have valid bits if EOP set */
- if (unlikely(staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK)) {
- dev_kfree_skb_irq(skb);
- goto next_desc;
- }
-
- ixgbevf_rx_checksum(adapter, staterr, skb);
-
- /* probably a little skewed due to removing CRC */
- total_rx_bytes += skb->len;
- total_rx_packets++;
-
- /*
- * Work around issue of some types of VM to VM loop back
- * packets not getting split correctly
- */
- if (staterr & IXGBE_RXD_STAT_LB) {
- u32 header_fixup_len = skb_headlen(skb);
- if (header_fixup_len < 14)
- skb_push(skb, header_fixup_len);
- }
- skb->protocol = eth_type_trans(skb, adapter->netdev);
-
- ixgbevf_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
-
-next_desc:
- rx_desc->wb.upper.status_error = 0;
-
- /* return some buffers to hardware, one at a time is too slow */
- if (cleaned_count >= IXGBEVF_RX_BUFFER_WRITE) {
- ixgbevf_alloc_rx_buffers(adapter, rx_ring,
- cleaned_count);
- cleaned_count = 0;
- }
-
- /* use prefetched values */
- rx_desc = next_rxd;
- rx_buffer_info = &rx_ring->rx_buffer_info[i];
-
- staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
- }
-
- rx_ring->next_to_clean = i;
- cleaned_count = IXGBE_DESC_UNUSED(rx_ring);
-
- if (cleaned_count)
- ixgbevf_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
-
- rx_ring->total_packets += total_rx_packets;
- rx_ring->total_bytes += total_rx_bytes;
- adapter->netdev->stats.rx_bytes += total_rx_bytes;
- adapter->netdev->stats.rx_packets += total_rx_packets;
-
- return cleaned;
-}
-
-/**
- * ixgbevf_clean_rxonly - msix (aka one shot) rx clean routine
- * @napi: napi struct with our devices info in it
- * @budget: amount of work driver is allowed to do this pass, in packets
- *
- * This function is optimized for cleaning one queue only on a single
- * q_vector!!!
- **/
-static int ixgbevf_clean_rxonly(struct napi_struct *napi, int budget)
-{
- struct ixgbevf_q_vector *q_vector =
- container_of(napi, struct ixgbevf_q_vector, napi);
- struct ixgbevf_adapter *adapter = q_vector->adapter;
- struct ixgbevf_ring *rx_ring = NULL;
- int work_done = 0;
- long r_idx;
-
- r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
- rx_ring = &(adapter->rx_ring[r_idx]);
-
- ixgbevf_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
-
- /* If all Rx work done, exit the polling mode */
- if (work_done < budget) {
- napi_complete(napi);
- if (adapter->itr_setting & 1)
- ixgbevf_set_itr_msix(q_vector);
- if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
- ixgbevf_irq_enable_queues(adapter, rx_ring->v_idx);
- }
-
- return work_done;
-}
-
-/**
- * ixgbevf_clean_rxonly_many - msix (aka one shot) rx clean routine
- * @napi: napi struct with our devices info in it
- * @budget: amount of work driver is allowed to do this pass, in packets
- *
- * This function will clean more than one rx queue associated with a
- * q_vector.
- **/
-static int ixgbevf_clean_rxonly_many(struct napi_struct *napi, int budget)
-{
- struct ixgbevf_q_vector *q_vector =
- container_of(napi, struct ixgbevf_q_vector, napi);
- struct ixgbevf_adapter *adapter = q_vector->adapter;
- struct ixgbevf_ring *rx_ring = NULL;
- int work_done = 0, i;
- long r_idx;
- u64 enable_mask = 0;
-
- /* attempt to distribute budget to each queue fairly, but don't allow
- * the budget to go below 1 because we'll exit polling */
- budget /= (q_vector->rxr_count ?: 1);
- budget = max(budget, 1);
- r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
- for (i = 0; i < q_vector->rxr_count; i++) {
- rx_ring = &(adapter->rx_ring[r_idx]);
- ixgbevf_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
- enable_mask |= rx_ring->v_idx;
- r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
- r_idx + 1);
- }
-
-#ifndef HAVE_NETDEV_NAPI_LIST
- if (!netif_running(adapter->netdev))
- work_done = 0;
-
-#endif
- r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
- rx_ring = &(adapter->rx_ring[r_idx]);
-
- /* If all Rx work done, exit the polling mode */
- if (work_done < budget) {
- napi_complete(napi);
- if (adapter->itr_setting & 1)
- ixgbevf_set_itr_msix(q_vector);
- if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
- ixgbevf_irq_enable_queues(adapter, enable_mask);
- }
-
- return work_done;
-}
-
-
-/**
- * ixgbevf_configure_msix - Configure MSI-X hardware
- * @adapter: board private structure
- *
- * ixgbevf_configure_msix sets up the hardware to properly generate MSI-X
- * interrupts.
- **/
-static void ixgbevf_configure_msix(struct ixgbevf_adapter *adapter)
-{
- struct ixgbevf_q_vector *q_vector;
- struct ixgbe_hw *hw = &adapter->hw;
- int i, j, q_vectors, v_idx, r_idx;
- u32 mask;
-
- q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
-
- /*
- * Populate the IVAR table and set the ITR values to the
- * corresponding register.
- */
- for (v_idx = 0; v_idx < q_vectors; v_idx++) {
- q_vector = adapter->q_vector[v_idx];
- /* XXX for_each_set_bit(...) */
- r_idx = find_first_bit(q_vector->rxr_idx,
- adapter->num_rx_queues);
-
- for (i = 0; i < q_vector->rxr_count; i++) {
- j = adapter->rx_ring[r_idx].reg_idx;
- ixgbevf_set_ivar(adapter, 0, j, v_idx);
- r_idx = find_next_bit(q_vector->rxr_idx,
- adapter->num_rx_queues,
- r_idx + 1);
- }
- r_idx = find_first_bit(q_vector->txr_idx,
- adapter->num_tx_queues);
-
- for (i = 0; i < q_vector->txr_count; i++) {
- j = adapter->tx_ring[r_idx].reg_idx;
- ixgbevf_set_ivar(adapter, 1, j, v_idx);
- r_idx = find_next_bit(q_vector->txr_idx,
- adapter->num_tx_queues,
- r_idx + 1);
- }
-
- /* if this is a tx only vector halve the interrupt rate */
- if (q_vector->txr_count && !q_vector->rxr_count)
- q_vector->eitr = (adapter->eitr_param >> 1);
- else if (q_vector->rxr_count)
- /* rx only */
- q_vector->eitr = adapter->eitr_param;
-
- ixgbevf_write_eitr(adapter, v_idx, q_vector->eitr);
- }
-
- ixgbevf_set_ivar(adapter, -1, 1, v_idx);
-
- /* set up to autoclear timer, and the vectors */
- mask = IXGBE_EIMS_ENABLE_MASK;
- mask &= ~IXGBE_EIMS_OTHER;
- IXGBE_WRITE_REG(hw, IXGBE_VTEIAC, mask);
-}
-
-enum latency_range {
- lowest_latency = 0,
- low_latency = 1,
- bulk_latency = 2,
- latency_invalid = 255
-};
-
-/**
- * ixgbevf_update_itr - update the dynamic ITR value based on statistics
- * @adapter: pointer to adapter
- * @eitr: eitr setting (ints per sec) to give last timeslice
- * @itr_setting: current throttle rate in ints/second
- * @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.
- **/
-static u8 ixgbevf_update_itr(struct ixgbevf_adapter *adapter,
- u32 eitr, u8 itr_setting,
- int packets, int bytes)
-{
- unsigned int retval = itr_setting;
- u32 timepassed_us;
- u64 bytes_perint;
-
- if (packets == 0)
- goto update_itr_done;
-
-
- /* simple throttlerate management
- * 0-20MB/s lowest (100000 ints/s)
- * 20-100MB/s low (20000 ints/s)
- * 100-1249MB/s bulk (8000 ints/s)
- */
- /* what was last interrupt timeslice? */
- timepassed_us = 1000000/eitr;
- bytes_perint = bytes / timepassed_us; /* bytes/usec */
-
- switch (itr_setting) {
- case lowest_latency:
- if (bytes_perint > adapter->eitr_low)
- retval = low_latency;
- break;
- case low_latency:
- if (bytes_perint > adapter->eitr_high)
- retval = bulk_latency;
- else if (bytes_perint <= adapter->eitr_low)
- retval = lowest_latency;
- break;
- case bulk_latency:
- if (bytes_perint <= adapter->eitr_high)
- retval = low_latency;
- break;
- }
-
-update_itr_done:
- return retval;
-}
-
-/**
- * ixgbevf_write_eitr - write VTEITR register in hardware specific way
- * @adapter: pointer to adapter struct
- * @v_idx: vector index into q_vector array
- * @itr_reg: new value to be written in *register* format, not ints/s
- *
- * This function is made to be called by ethtool and by the driver
- * when it needs to update VTEITR registers at runtime. Hardware
- * specific quirks/differences are taken care of here.
- */
-static void ixgbevf_write_eitr(struct ixgbevf_adapter *adapter, int v_idx,
- u32 itr_reg)
-{
- struct ixgbe_hw *hw = &adapter->hw;
-
- itr_reg = EITR_INTS_PER_SEC_TO_REG(itr_reg);
-
- /*
- * set the WDIS bit to not clear the timer bits and cause an
- * immediate assertion of the interrupt
- */
- itr_reg |= IXGBE_EITR_CNT_WDIS;
-
- IXGBE_WRITE_REG(hw, IXGBE_VTEITR(v_idx), itr_reg);
-}
-
-static void ixgbevf_set_itr_msix(struct ixgbevf_q_vector *q_vector)
-{
- struct ixgbevf_adapter *adapter = q_vector->adapter;
- u32 new_itr;
- u8 current_itr, ret_itr;
- int i, r_idx, v_idx = q_vector->v_idx;
- struct ixgbevf_ring *rx_ring, *tx_ring;
-
- r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
- for (i = 0; i < q_vector->txr_count; i++) {
- tx_ring = &(adapter->tx_ring[r_idx]);
- ret_itr = ixgbevf_update_itr(adapter, q_vector->eitr,
- q_vector->tx_itr,
- tx_ring->total_packets,
- tx_ring->total_bytes);
- /* if the result for this queue would decrease interrupt
- * rate for this vector then use that result */
- q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ?
- q_vector->tx_itr - 1 : ret_itr);
- r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
- r_idx + 1);
- }
-
- r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
- for (i = 0; i < q_vector->rxr_count; i++) {
- rx_ring = &(adapter->rx_ring[r_idx]);
- ret_itr = ixgbevf_update_itr(adapter, q_vector->eitr,
- q_vector->rx_itr,
- rx_ring->total_packets,
- rx_ring->total_bytes);
- /* if the result for this queue would decrease interrupt
- * rate for this vector then use that result */
- q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ?
- q_vector->rx_itr - 1 : ret_itr);
- r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
- r_idx + 1);
- }
-
- current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
-
- switch (current_itr) {
- /* counts and packets in update_itr are dependent on these numbers */
- case lowest_latency:
- new_itr = 100000;
- break;
- case low_latency:
- new_itr = 20000; /* aka hwitr = ~200 */
- break;
- case bulk_latency:
- default:
- new_itr = 8000;
- break;
- }
-
- if (new_itr != q_vector->eitr) {
- u32 itr_reg;
-
- /* save the algorithm value here, not the smoothed one */
- q_vector->eitr = new_itr;
- /* do an exponential smoothing */
- new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
- itr_reg = EITR_INTS_PER_SEC_TO_REG(new_itr);
- ixgbevf_write_eitr(adapter, v_idx, itr_reg);
- }
-}
-
-static irqreturn_t ixgbevf_msix_mbx(int irq, void *data)
-{
- struct net_device *netdev = data;
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
- struct ixgbe_hw *hw = &adapter->hw;
- u32 eicr;
- u32 msg;
-
- eicr = IXGBE_READ_REG(hw, IXGBE_VTEICS);
- IXGBE_WRITE_REG(hw, IXGBE_VTEICR, eicr);
-
- if (!hw->mbx.ops.check_for_ack(hw)) {
- /*
- * checking for the ack clears the PFACK bit. Place
- * it back in the v2p_mailbox cache so that anyone
- * polling for an ack will not miss it. Also
- * avoid the read below because the code to read
- * the mailbox will also clear the ack bit. This was
- * causing lost acks. Just cache the bit and exit
- * the IRQ handler.
- */
- hw->mbx.v2p_mailbox |= IXGBE_VFMAILBOX_PFACK;
- goto out;
- }
-
- /* Not an ack interrupt, go ahead and read the message */
- hw->mbx.ops.read(hw, &msg, 1);
-
- if ((msg & IXGBE_MBVFICR_VFREQ_MASK) == IXGBE_PF_CONTROL_MSG)
- mod_timer(&adapter->watchdog_timer,
- round_jiffies(jiffies + 1));
-
-out:
- return IRQ_HANDLED;
-}
-
-static irqreturn_t ixgbevf_msix_clean_tx(int irq, void *data)
-{
- struct ixgbevf_q_vector *q_vector = data;
- struct ixgbevf_adapter *adapter = q_vector->adapter;
- struct ixgbevf_ring *tx_ring;
- int i, r_idx;
-
- if (!q_vector->txr_count)
- return IRQ_HANDLED;
-
- r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
- for (i = 0; i < q_vector->txr_count; i++) {
- tx_ring = &(adapter->tx_ring[r_idx]);
- tx_ring->total_bytes = 0;
- tx_ring->total_packets = 0;
- ixgbevf_clean_tx_irq(adapter, tx_ring);
- r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
- r_idx + 1);
- }
-
- if (adapter->itr_setting & 1)
- ixgbevf_set_itr_msix(q_vector);
-
- return IRQ_HANDLED;
-}
-
-/**
- * ixgbevf_msix_clean_rx - single unshared vector rx clean (all queues)
- * @irq: unused
- * @data: pointer to our q_vector struct for this interrupt vector
- **/
-static irqreturn_t ixgbevf_msix_clean_rx(int irq, void *data)
-{
- struct ixgbevf_q_vector *q_vector = data;
- struct ixgbevf_adapter *adapter = q_vector->adapter;
- struct ixgbe_hw *hw = &adapter->hw;
- struct ixgbevf_ring *rx_ring;
- int r_idx;
- int i;
-
- r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
- for (i = 0; i < q_vector->rxr_count; i++) {
- rx_ring = &(adapter->rx_ring[r_idx]);
- rx_ring->total_bytes = 0;
- rx_ring->total_packets = 0;
- r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
- r_idx + 1);
- }
-
- if (!q_vector->rxr_count)
- return IRQ_HANDLED;
-
- r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
- rx_ring = &(adapter->rx_ring[r_idx]);
- /* disable interrupts on this vector only */
- IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, rx_ring->v_idx);
- napi_schedule(&q_vector->napi);
-
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t ixgbevf_msix_clean_many(int irq, void *data)
-{
- ixgbevf_msix_clean_rx(irq, data);
- ixgbevf_msix_clean_tx(irq, data);
-
- return IRQ_HANDLED;
-}
-
-static inline void map_vector_to_rxq(struct ixgbevf_adapter *a, int v_idx,
- int r_idx)
-{
- struct ixgbevf_q_vector *q_vector = a->q_vector[v_idx];
-
- set_bit(r_idx, q_vector->rxr_idx);
- q_vector->rxr_count++;
- a->rx_ring[r_idx].v_idx = 1 << v_idx;
-}
-
-static inline void map_vector_to_txq(struct ixgbevf_adapter *a, int v_idx,
- int t_idx)
-{
- struct ixgbevf_q_vector *q_vector = a->q_vector[v_idx];
-
- set_bit(t_idx, q_vector->txr_idx);
- q_vector->txr_count++;
- a->tx_ring[t_idx].v_idx = 1 << v_idx;
-}
-
-/**
- * ixgbevf_map_rings_to_vectors - Maps descriptor rings to vectors
- * @adapter: board private structure to initialize
- *
- * This function maps descriptor rings to the queue-specific vectors
- * we were allotted through the MSI-X enabling code. Ideally, we'd have
- * one vector per ring/queue, but on a constrained vector budget, we
- * group the rings as "efficiently" as possible. You would add new
- * mapping configurations in here.
- **/
-static int ixgbevf_map_rings_to_vectors(struct ixgbevf_adapter *adapter)
-{
- int q_vectors;
- int v_start = 0;
- int rxr_idx = 0, txr_idx = 0;
- int rxr_remaining = adapter->num_rx_queues;
- int txr_remaining = adapter->num_tx_queues;
- int i, j;
- int rqpv, tqpv;
- int err = 0;
-
- q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
-
- /*
- * The ideal configuration...
- * We have enough vectors to map one per queue.
- */
- if (q_vectors == adapter->num_rx_queues + adapter->num_tx_queues) {
- for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
- map_vector_to_rxq(adapter, v_start, rxr_idx);
-
- for (; txr_idx < txr_remaining; v_start++, txr_idx++)
- map_vector_to_txq(adapter, v_start, txr_idx);
- goto out;
- }
-
- /*
- * If we don't have enough vectors for a 1-to-1
- * mapping, we'll have to group them so there are
- * multiple queues per vector.
- */
- /* Re-adjusting *qpv takes care of the remainder. */
- for (i = v_start; i < q_vectors; i++) {
- rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i);
- for (j = 0; j < rqpv; j++) {
- map_vector_to_rxq(adapter, i, rxr_idx);
- rxr_idx++;
- rxr_remaining--;
- }
- }
- for (i = v_start; i < q_vectors; i++) {
- tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i);
- for (j = 0; j < tqpv; j++) {
- map_vector_to_txq(adapter, i, txr_idx);
- txr_idx++;
- txr_remaining--;
- }
- }
-
-out:
- return err;
-}
-
-/**
- * ixgbevf_request_msix_irqs - Initialize MSI-X interrupts
- * @adapter: board private structure
- *
- * ixgbevf_request_msix_irqs allocates MSI-X vectors and requests
- * interrupts from the kernel.
- **/
-static int ixgbevf_request_msix_irqs(struct ixgbevf_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- irqreturn_t (*handler)(int, void *);
- int i, vector, q_vectors, err;
- int ri = 0, ti = 0;
-
- /* Decrement for Other and TCP Timer vectors */
- q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
-
-#define SET_HANDLER(_v) (((_v)->rxr_count && (_v)->txr_count) \
- ? &ixgbevf_msix_clean_many : \
- (_v)->rxr_count ? &ixgbevf_msix_clean_rx : \
- (_v)->txr_count ? &ixgbevf_msix_clean_tx : \
- NULL)
- for (vector = 0; vector < q_vectors; vector++) {
- handler = SET_HANDLER(adapter->q_vector[vector]);
-
- if (handler == &ixgbevf_msix_clean_rx) {
- sprintf(adapter->name[vector], "%s-%s-%d",
- netdev->name, "rx", ri++);
- } else if (handler == &ixgbevf_msix_clean_tx) {
- sprintf(adapter->name[vector], "%s-%s-%d",
- netdev->name, "tx", ti++);
- } else if (handler == &ixgbevf_msix_clean_many) {
- sprintf(adapter->name[vector], "%s-%s-%d",
- netdev->name, "TxRx", vector);
- } else {
- /* skip this unused q_vector */
- continue;
- }
- err = request_irq(adapter->msix_entries[vector].vector,
- handler, 0, adapter->name[vector],
- adapter->q_vector[vector]);
- if (err) {
- hw_dbg(&adapter->hw,
- "request_irq failed for MSIX interrupt "
- "Error: %d\n", err);
- goto free_queue_irqs;
- }
- }
-
- sprintf(adapter->name[vector], "%s:mbx", netdev->name);
- err = request_irq(adapter->msix_entries[vector].vector,
- &ixgbevf_msix_mbx, 0, adapter->name[vector], netdev);
- if (err) {
- hw_dbg(&adapter->hw,
- "request_irq for msix_mbx failed: %d\n", err);
- goto free_queue_irqs;
- }
-
- return 0;
-
-free_queue_irqs:
- for (i = vector - 1; i >= 0; i--)
- free_irq(adapter->msix_entries[--vector].vector,
- &(adapter->q_vector[i]));
- pci_disable_msix(adapter->pdev);
- kfree(adapter->msix_entries);
- adapter->msix_entries = NULL;
- return err;
-}
-
-static inline void ixgbevf_reset_q_vectors(struct ixgbevf_adapter *adapter)
-{
- int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
-
- for (i = 0; i < q_vectors; i++) {
- struct ixgbevf_q_vector *q_vector = adapter->q_vector[i];
- bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES);
- bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES);
- q_vector->rxr_count = 0;
- q_vector->txr_count = 0;
- q_vector->eitr = adapter->eitr_param;
- }
-}
-
-/**
- * ixgbevf_request_irq - initialize interrupts
- * @adapter: board private structure
- *
- * Attempts to configure interrupts using the best available
- * capabilities of the hardware and kernel.
- **/
-static int ixgbevf_request_irq(struct ixgbevf_adapter *adapter)
-{
- int err = 0;
-
- err = ixgbevf_request_msix_irqs(adapter);
-
- if (err)
- hw_dbg(&adapter->hw,
- "request_irq failed, Error %d\n", err);
-
- return err;
-}
-
-static void ixgbevf_free_irq(struct ixgbevf_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- int i, q_vectors;
-
- q_vectors = adapter->num_msix_vectors;
-
- i = q_vectors - 1;
-
- free_irq(adapter->msix_entries[i].vector, netdev);
- i--;
-
- for (; i >= 0; i--) {
- free_irq(adapter->msix_entries[i].vector,
- adapter->q_vector[i]);
- }
-
- ixgbevf_reset_q_vectors(adapter);
-}
-
-/**
- * ixgbevf_irq_disable - Mask off interrupt generation on the NIC
- * @adapter: board private structure
- **/
-static inline void ixgbevf_irq_disable(struct ixgbevf_adapter *adapter)
-{
- int i;
- struct ixgbe_hw *hw = &adapter->hw;
-
- IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, ~0);
-
- IXGBE_WRITE_FLUSH(hw);
-
- for (i = 0; i < adapter->num_msix_vectors; i++)
- synchronize_irq(adapter->msix_entries[i].vector);
-}
-
-/**
- * ixgbevf_irq_enable - Enable default interrupt generation settings
- * @adapter: board private structure
- **/
-static inline void ixgbevf_irq_enable(struct ixgbevf_adapter *adapter,
- bool queues, bool flush)
-{
- struct ixgbe_hw *hw = &adapter->hw;
- u32 mask;
- u64 qmask;
-
- mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
- qmask = ~0;
-
- IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, mask);
-
- if (queues)
- ixgbevf_irq_enable_queues(adapter, qmask);
-
- if (flush)
- IXGBE_WRITE_FLUSH(hw);
-}
-
-/**
- * ixgbevf_configure_tx - Configure 82599 VF Transmit Unit after Reset
- * @adapter: board private structure
- *
- * Configure the Tx unit of the MAC after a reset.
- **/
-static void ixgbevf_configure_tx(struct ixgbevf_adapter *adapter)
-{
- u64 tdba;
- struct ixgbe_hw *hw = &adapter->hw;
- u32 i, j, tdlen, txctrl;
-
- /* Setup the HW Tx Head and Tail descriptor pointers */
- for (i = 0; i < adapter->num_tx_queues; i++) {
- struct ixgbevf_ring *ring = &adapter->tx_ring[i];
- j = ring->reg_idx;
- tdba = ring->dma;
- tdlen = ring->count * sizeof(union ixgbe_adv_tx_desc);
- IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(j),
- (tdba & DMA_BIT_MASK(32)));
- IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(j), (tdba >> 32));
- IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(j), tdlen);
- IXGBE_WRITE_REG(hw, IXGBE_VFTDH(j), 0);
- IXGBE_WRITE_REG(hw, IXGBE_VFTDT(j), 0);
- adapter->tx_ring[i].head = IXGBE_VFTDH(j);
- adapter->tx_ring[i].tail = IXGBE_VFTDT(j);
- /* Disable Tx Head Writeback RO bit, since this hoses
- * bookkeeping if things aren't delivered in order.
- */
- txctrl = IXGBE_READ_REG(hw, IXGBE_VFDCA_TXCTRL(j));
- txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN;
- IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(j), txctrl);
- }
-}
-
-#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
-
-static void ixgbevf_configure_srrctl(struct ixgbevf_adapter *adapter, int index)
-{
- struct ixgbevf_ring *rx_ring;
- struct ixgbe_hw *hw = &adapter->hw;
- u32 srrctl;
-
- rx_ring = &adapter->rx_ring[index];
-
- srrctl = IXGBE_SRRCTL_DROP_EN;
-
- if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
- u16 bufsz = IXGBEVF_RXBUFFER_2048;
- /* grow the amount we can receive on large page machines */
- if (bufsz < (PAGE_SIZE / 2))
- bufsz = (PAGE_SIZE / 2);
- /* cap the bufsz at our largest descriptor size */
- bufsz = min((u16)IXGBEVF_MAX_RXBUFFER, bufsz);
-
- srrctl |= bufsz >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
- srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
- srrctl |= ((IXGBEVF_RX_HDR_SIZE <<
- IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
- IXGBE_SRRCTL_BSIZEHDR_MASK);
- } else {
- srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
-
- if (rx_ring->rx_buf_len == MAXIMUM_ETHERNET_VLAN_SIZE)
- srrctl |= IXGBEVF_RXBUFFER_2048 >>
- IXGBE_SRRCTL_BSIZEPKT_SHIFT;
- else
- srrctl |= rx_ring->rx_buf_len >>
- IXGBE_SRRCTL_BSIZEPKT_SHIFT;
- }
- IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(index), srrctl);
-}
-
-/**
- * ixgbevf_configure_rx - Configure 82599 VF Receive Unit after Reset
- * @adapter: board private structure
- *
- * Configure the Rx unit of the MAC after a reset.
- **/
-static void ixgbevf_configure_rx(struct ixgbevf_adapter *adapter)
-{
- u64 rdba;
- struct ixgbe_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
- int i, j;
- u32 rdlen;
- int rx_buf_len;
-
- /* Decide whether to use packet split mode or not */
- if (netdev->mtu > ETH_DATA_LEN) {
- if (adapter->flags & IXGBE_FLAG_RX_PS_CAPABLE)
- adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
- else
- adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
- } else {
- if (adapter->flags & IXGBE_FLAG_RX_1BUF_CAPABLE)
- adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
- else
- adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
- }
-
- /* Set the RX buffer length according to the mode */
- if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
- /* PSRTYPE must be initialized in 82599 */
- u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
- IXGBE_PSRTYPE_UDPHDR |
- IXGBE_PSRTYPE_IPV4HDR |
- IXGBE_PSRTYPE_IPV6HDR |
- IXGBE_PSRTYPE_L2HDR;
- IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype);
- rx_buf_len = IXGBEVF_RX_HDR_SIZE;
- } else {
- IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0);
- if (netdev->mtu <= ETH_DATA_LEN)
- rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
- else
- rx_buf_len = ALIGN(max_frame, 1024);
- }
-
- rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc);
- /* Setup the HW Rx Head and Tail Descriptor Pointers and
- * the Base and Length of the Rx Descriptor Ring */
- for (i = 0; i < adapter->num_rx_queues; i++) {
- rdba = adapter->rx_ring[i].dma;
- j = adapter->rx_ring[i].reg_idx;
- IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(j),
- (rdba & DMA_BIT_MASK(32)));
- IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(j), (rdba >> 32));
- IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(j), rdlen);
- IXGBE_WRITE_REG(hw, IXGBE_VFRDH(j), 0);
- IXGBE_WRITE_REG(hw, IXGBE_VFRDT(j), 0);
- adapter->rx_ring[i].head = IXGBE_VFRDH(j);
- adapter->rx_ring[i].tail = IXGBE_VFRDT(j);
- adapter->rx_ring[i].rx_buf_len = rx_buf_len;
-
- ixgbevf_configure_srrctl(adapter, j);
- }
-}
-
-static void ixgbevf_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
-{
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
- struct ixgbe_hw *hw = &adapter->hw;
-
- /* add VID to filter table */
- if (hw->mac.ops.set_vfta)
- hw->mac.ops.set_vfta(hw, vid, 0, true);
- set_bit(vid, adapter->active_vlans);
-}
-
-static void ixgbevf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
-{
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
- struct ixgbe_hw *hw = &adapter->hw;
-
- /* remove VID from filter table */
- if (hw->mac.ops.set_vfta)
- hw->mac.ops.set_vfta(hw, vid, 0, false);
- clear_bit(vid, adapter->active_vlans);
-}
-
-static void ixgbevf_restore_vlan(struct ixgbevf_adapter *adapter)
-{
- u16 vid;
-
- for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
- ixgbevf_vlan_rx_add_vid(adapter->netdev, vid);
-}
-
-static int ixgbevf_write_uc_addr_list(struct net_device *netdev)
-{
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
- struct ixgbe_hw *hw = &adapter->hw;
- int count = 0;
-
- if ((netdev_uc_count(netdev)) > 10) {
- printk(KERN_ERR "Too many unicast filters - No Space\n");
- return -ENOSPC;
- }
-
- if (!netdev_uc_empty(netdev)) {
- struct netdev_hw_addr *ha;
- netdev_for_each_uc_addr(ha, netdev) {
- hw->mac.ops.set_uc_addr(hw, ++count, ha->addr);
- udelay(200);
- }
- } else {
- /*
- * If the list is empty then send message to PF driver to
- * clear all macvlans on this VF.
- */
- hw->mac.ops.set_uc_addr(hw, 0, NULL);
- }
-
- return count;
-}
-
-/**
- * ixgbevf_set_rx_mode - Multicast set
- * @netdev: network interface device structure
- *
- * The set_rx_method 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 mode.
- **/
-static void ixgbevf_set_rx_mode(struct net_device *netdev)
-{
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
- struct ixgbe_hw *hw = &adapter->hw;
-
- /* reprogram multicast list */
- if (hw->mac.ops.update_mc_addr_list)
- hw->mac.ops.update_mc_addr_list(hw, netdev);
-
- ixgbevf_write_uc_addr_list(netdev);
-}
-
-static void ixgbevf_napi_enable_all(struct ixgbevf_adapter *adapter)
-{
- int q_idx;
- struct ixgbevf_q_vector *q_vector;
- int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
-
- for (q_idx = 0; q_idx < q_vectors; q_idx++) {
- struct napi_struct *napi;
- q_vector = adapter->q_vector[q_idx];
- if (!q_vector->rxr_count)
- continue;
- napi = &q_vector->napi;
- if (q_vector->rxr_count > 1)
- napi->poll = &ixgbevf_clean_rxonly_many;
-
- napi_enable(napi);
- }
-}
-
-static void ixgbevf_napi_disable_all(struct ixgbevf_adapter *adapter)
-{
- int q_idx;
- struct ixgbevf_q_vector *q_vector;
- int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
-
- for (q_idx = 0; q_idx < q_vectors; q_idx++) {
- q_vector = adapter->q_vector[q_idx];
- if (!q_vector->rxr_count)
- continue;
- napi_disable(&q_vector->napi);
- }
-}
-
-static void ixgbevf_configure(struct ixgbevf_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- int i;
-
- ixgbevf_set_rx_mode(netdev);
-
- ixgbevf_restore_vlan(adapter);
-
- ixgbevf_configure_tx(adapter);
- ixgbevf_configure_rx(adapter);
- for (i = 0; i < adapter->num_rx_queues; i++) {
- struct ixgbevf_ring *ring = &adapter->rx_ring[i];
- ixgbevf_alloc_rx_buffers(adapter, ring, ring->count);
- ring->next_to_use = ring->count - 1;
- writel(ring->next_to_use, adapter->hw.hw_addr + ring->tail);
- }
-}
-
-#define IXGBE_MAX_RX_DESC_POLL 10
-static inline void ixgbevf_rx_desc_queue_enable(struct ixgbevf_adapter *adapter,
- int rxr)
-{
- struct ixgbe_hw *hw = &adapter->hw;
- int j = adapter->rx_ring[rxr].reg_idx;
- int k;
-
- for (k = 0; k < IXGBE_MAX_RX_DESC_POLL; k++) {
- if (IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j)) & IXGBE_RXDCTL_ENABLE)
- break;
- else
- msleep(1);
- }
- if (k >= IXGBE_MAX_RX_DESC_POLL) {
- hw_dbg(hw, "RXDCTL.ENABLE on Rx queue %d "
- "not set within the polling period\n", rxr);
- }
-
- ixgbevf_release_rx_desc(&adapter->hw, &adapter->rx_ring[rxr],
- (adapter->rx_ring[rxr].count - 1));
-}
-
-static void ixgbevf_save_reset_stats(struct ixgbevf_adapter *adapter)
-{
- /* Only save pre-reset stats if there are some */
- if (adapter->stats.vfgprc || adapter->stats.vfgptc) {
- adapter->stats.saved_reset_vfgprc += adapter->stats.vfgprc -
- adapter->stats.base_vfgprc;
- adapter->stats.saved_reset_vfgptc += adapter->stats.vfgptc -
- adapter->stats.base_vfgptc;
- adapter->stats.saved_reset_vfgorc += adapter->stats.vfgorc -
- adapter->stats.base_vfgorc;
- adapter->stats.saved_reset_vfgotc += adapter->stats.vfgotc -
- adapter->stats.base_vfgotc;
- adapter->stats.saved_reset_vfmprc += adapter->stats.vfmprc -
- adapter->stats.base_vfmprc;
- }
-}
-
-static void ixgbevf_init_last_counter_stats(struct ixgbevf_adapter *adapter)
-{
- struct ixgbe_hw *hw = &adapter->hw;
-
- adapter->stats.last_vfgprc = IXGBE_READ_REG(hw, IXGBE_VFGPRC);
- adapter->stats.last_vfgorc = IXGBE_READ_REG(hw, IXGBE_VFGORC_LSB);
- adapter->stats.last_vfgorc |=
- (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGORC_MSB))) << 32);
- adapter->stats.last_vfgptc = IXGBE_READ_REG(hw, IXGBE_VFGPTC);
- adapter->stats.last_vfgotc = IXGBE_READ_REG(hw, IXGBE_VFGOTC_LSB);
- adapter->stats.last_vfgotc |=
- (((u64)(IXGBE_READ_REG(hw, IXGBE_VFGOTC_MSB))) << 32);
- adapter->stats.last_vfmprc = IXGBE_READ_REG(hw, IXGBE_VFMPRC);
-
- adapter->stats.base_vfgprc = adapter->stats.last_vfgprc;
- adapter->stats.base_vfgorc = adapter->stats.last_vfgorc;
- adapter->stats.base_vfgptc = adapter->stats.last_vfgptc;
- adapter->stats.base_vfgotc = adapter->stats.last_vfgotc;
- adapter->stats.base_vfmprc = adapter->stats.last_vfmprc;
-}
-
-static int ixgbevf_up_complete(struct ixgbevf_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- struct ixgbe_hw *hw = &adapter->hw;
- int i, j = 0;
- int num_rx_rings = adapter->num_rx_queues;
- u32 txdctl, rxdctl;
-
- for (i = 0; i < adapter->num_tx_queues; i++) {
- j = adapter->tx_ring[i].reg_idx;
- txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
- /* enable WTHRESH=8 descriptors, to encourage burst writeback */
- txdctl |= (8 << 16);
- IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl);
- }
-
- for (i = 0; i < adapter->num_tx_queues; i++) {
- j = adapter->tx_ring[i].reg_idx;
- txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
- txdctl |= IXGBE_TXDCTL_ENABLE;
- IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j), txdctl);
- }
-
- for (i = 0; i < num_rx_rings; i++) {
- j = adapter->rx_ring[i].reg_idx;
- rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(j));
- rxdctl |= IXGBE_RXDCTL_ENABLE | IXGBE_RXDCTL_VME;
- if (hw->mac.type == ixgbe_mac_X540_vf) {
- rxdctl &= ~IXGBE_RXDCTL_RLPMLMASK;
- rxdctl |= ((netdev->mtu + ETH_HLEN + ETH_FCS_LEN) |
- IXGBE_RXDCTL_RLPML_EN);
- }
- IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(j), rxdctl);
- ixgbevf_rx_desc_queue_enable(adapter, i);
- }
-
- ixgbevf_configure_msix(adapter);
-
- if (hw->mac.ops.set_rar) {
- if (is_valid_ether_addr(hw->mac.addr))
- hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0);
- else
- hw->mac.ops.set_rar(hw, 0, hw->mac.perm_addr, 0);
- }
-
- clear_bit(__IXGBEVF_DOWN, &adapter->state);
- ixgbevf_napi_enable_all(adapter);
-
- /* enable transmits */
- netif_tx_start_all_queues(netdev);
-
- ixgbevf_save_reset_stats(adapter);
- ixgbevf_init_last_counter_stats(adapter);
-
- /* bring the link up in the watchdog, this could race with our first
- * link up interrupt but shouldn't be a problem */
- adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
- adapter->link_check_timeout = jiffies;
- mod_timer(&adapter->watchdog_timer, jiffies);
- return 0;
-}
-
-int ixgbevf_up(struct ixgbevf_adapter *adapter)
-{
- int err;
- struct ixgbe_hw *hw = &adapter->hw;
-
- ixgbevf_configure(adapter);
-
- err = ixgbevf_up_complete(adapter);
-
- /* clear any pending interrupts, may auto mask */
- IXGBE_READ_REG(hw, IXGBE_VTEICR);
-
- ixgbevf_irq_enable(adapter, true, true);
-
- return err;
-}
-
-/**
- * ixgbevf_clean_rx_ring - Free Rx Buffers per Queue
- * @adapter: board private structure
- * @rx_ring: ring to free buffers from
- **/
-static void ixgbevf_clean_rx_ring(struct ixgbevf_adapter *adapter,
- struct ixgbevf_ring *rx_ring)
-{
- struct pci_dev *pdev = adapter->pdev;
- unsigned long size;
- unsigned int i;
-
- if (!rx_ring->rx_buffer_info)
- return;
-
- /* Free all the Rx ring sk_buffs */
- for (i = 0; i < rx_ring->count; i++) {
- struct ixgbevf_rx_buffer *rx_buffer_info;
-
- rx_buffer_info = &rx_ring->rx_buffer_info[i];
- if (rx_buffer_info->dma) {
- dma_unmap_single(&pdev->dev, rx_buffer_info->dma,
- rx_ring->rx_buf_len,
- DMA_FROM_DEVICE);
- rx_buffer_info->dma = 0;
- }
- if (rx_buffer_info->skb) {
- struct sk_buff *skb = rx_buffer_info->skb;
- rx_buffer_info->skb = NULL;
- do {
- struct sk_buff *this = skb;
- skb = skb->prev;
- dev_kfree_skb(this);
- } while (skb);
- }
- if (!rx_buffer_info->page)
- continue;
- dma_unmap_page(&pdev->dev, rx_buffer_info->page_dma,
- PAGE_SIZE / 2, DMA_FROM_DEVICE);
- rx_buffer_info->page_dma = 0;
- put_page(rx_buffer_info->page);
- rx_buffer_info->page = NULL;
- rx_buffer_info->page_offset = 0;
- }
-
- size = sizeof(struct ixgbevf_rx_buffer) * rx_ring->count;
- memset(rx_ring->rx_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;
-
- if (rx_ring->head)
- writel(0, adapter->hw.hw_addr + rx_ring->head);
- if (rx_ring->tail)
- writel(0, adapter->hw.hw_addr + rx_ring->tail);
-}
-
-/**
- * ixgbevf_clean_tx_ring - Free Tx Buffers
- * @adapter: board private structure
- * @tx_ring: ring to be cleaned
- **/
-static void ixgbevf_clean_tx_ring(struct ixgbevf_adapter *adapter,
- struct ixgbevf_ring *tx_ring)
-{
- struct ixgbevf_tx_buffer *tx_buffer_info;
- unsigned long size;
- unsigned int i;
-
- if (!tx_ring->tx_buffer_info)
- return;
-
- /* Free all the Tx ring sk_buffs */
-
- for (i = 0; i < tx_ring->count; i++) {
- tx_buffer_info = &tx_ring->tx_buffer_info[i];
- ixgbevf_unmap_and_free_tx_resource(adapter, tx_buffer_info);
- }
-
- size = sizeof(struct ixgbevf_tx_buffer) * tx_ring->count;
- memset(tx_ring->tx_buffer_info, 0, size);
-
- memset(tx_ring->desc, 0, tx_ring->size);
-
- tx_ring->next_to_use = 0;
- tx_ring->next_to_clean = 0;
-
- if (tx_ring->head)
- writel(0, adapter->hw.hw_addr + tx_ring->head);
- if (tx_ring->tail)
- writel(0, adapter->hw.hw_addr + tx_ring->tail);
-}
-
-/**
- * ixgbevf_clean_all_rx_rings - Free Rx Buffers for all queues
- * @adapter: board private structure
- **/
-static void ixgbevf_clean_all_rx_rings(struct ixgbevf_adapter *adapter)
-{
- int i;
-
- for (i = 0; i < adapter->num_rx_queues; i++)
- ixgbevf_clean_rx_ring(adapter, &adapter->rx_ring[i]);
-}
-
-/**
- * ixgbevf_clean_all_tx_rings - Free Tx Buffers for all queues
- * @adapter: board private structure
- **/
-static void ixgbevf_clean_all_tx_rings(struct ixgbevf_adapter *adapter)
-{
- int i;
-
- for (i = 0; i < adapter->num_tx_queues; i++)
- ixgbevf_clean_tx_ring(adapter, &adapter->tx_ring[i]);
-}
-
-void ixgbevf_down(struct ixgbevf_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- struct ixgbe_hw *hw = &adapter->hw;
- u32 txdctl;
- int i, j;
-
- /* signal that we are down to the interrupt handler */
- set_bit(__IXGBEVF_DOWN, &adapter->state);
- /* disable receives */
-
- netif_tx_disable(netdev);
-
- msleep(10);
-
- netif_tx_stop_all_queues(netdev);
-
- ixgbevf_irq_disable(adapter);
-
- ixgbevf_napi_disable_all(adapter);
-
- del_timer_sync(&adapter->watchdog_timer);
- /* can't call flush scheduled work here because it can deadlock
- * if linkwatch_event tries to acquire the rtnl_lock which we are
- * holding */
- while (adapter->flags & IXGBE_FLAG_IN_WATCHDOG_TASK)
- msleep(1);
-
- /* disable transmits in the hardware now that interrupts are off */
- for (i = 0; i < adapter->num_tx_queues; i++) {
- j = adapter->tx_ring[i].reg_idx;
- txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(j));
- IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(j),
- (txdctl & ~IXGBE_TXDCTL_ENABLE));
- }
-
- netif_carrier_off(netdev);
-
- if (!pci_channel_offline(adapter->pdev))
- ixgbevf_reset(adapter);
-
- ixgbevf_clean_all_tx_rings(adapter);
- ixgbevf_clean_all_rx_rings(adapter);
-}
-
-void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter)
-{
- struct ixgbe_hw *hw = &adapter->hw;
-
- WARN_ON(in_interrupt());
-
- while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state))
- msleep(1);
-
- /*
- * Check if PF is up before re-init. If not then skip until
- * later when the PF is up and ready to service requests from
- * the VF via mailbox. If the VF is up and running then the
- * watchdog task will continue to schedule reset tasks until
- * the PF is up and running.
- */
- if (!hw->mac.ops.reset_hw(hw)) {
- ixgbevf_down(adapter);
- ixgbevf_up(adapter);
- }
-
- clear_bit(__IXGBEVF_RESETTING, &adapter->state);
-}
-
-void ixgbevf_reset(struct ixgbevf_adapter *adapter)
-{
- struct ixgbe_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
-
- if (hw->mac.ops.reset_hw(hw))
- hw_dbg(hw, "PF still resetting\n");
- else
- hw->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);
- }
-}
-
-static void ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter *adapter,
- int vectors)
-{
- int err, vector_threshold;
-
- /* We'll want at least 3 (vector_threshold):
- * 1) TxQ[0] Cleanup
- * 2) RxQ[0] Cleanup
- * 3) Other (Link Status Change, etc.)
- */
- vector_threshold = MIN_MSIX_COUNT;
-
- /* The more we get, the more we will assign to Tx/Rx Cleanup
- * for the separate queues...where Rx Cleanup >= Tx Cleanup.
- * Right now, we simply care about how many we'll get; we'll
- * set them up later while requesting irq's.
- */
- while (vectors >= vector_threshold) {
- err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
- vectors);
- if (!err) /* Success in acquiring all requested vectors. */
- break;
- else if (err < 0)
- vectors = 0; /* Nasty failure, quit now */
- else /* err == number of vectors we should try again with */
- vectors = err;
- }
-
- if (vectors < vector_threshold) {
- /* Can't allocate enough MSI-X interrupts? Oh well.
- * This just means we'll go with either a single MSI
- * vector or fall back to legacy interrupts.
- */
- hw_dbg(&adapter->hw,
- "Unable to allocate MSI-X interrupts\n");
- kfree(adapter->msix_entries);
- adapter->msix_entries = NULL;
- } else {
- /*
- * Adjust for only the vectors we'll use, which is minimum
- * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
- * vectors we were allocated.
- */
- adapter->num_msix_vectors = vectors;
- }
-}
-
-/*
- * ixgbevf_set_num_queues: Allocate queues for device, feature dependent
- * @adapter: board private structure to initialize
- *
- * This is the top level queue allocation routine. The order here is very
- * important, starting with the "most" number of features turned on at once,
- * and ending with the smallest set of features. This way large combinations
- * can be allocated if they're turned on, and smaller combinations are the
- * fallthrough conditions.
- *
- **/
-static void ixgbevf_set_num_queues(struct ixgbevf_adapter *adapter)
-{
- /* Start with base case */
- adapter->num_rx_queues = 1;
- adapter->num_tx_queues = 1;
- adapter->num_rx_pools = adapter->num_rx_queues;
- adapter->num_rx_queues_per_pool = 1;
-}
-
-/**
- * ixgbevf_alloc_queues - Allocate memory for all rings
- * @adapter: board private structure to initialize
- *
- * We allocate one ring per queue at run-time since we don't know the
- * number of queues at compile-time. The polling_netdev array is
- * intended for Multiqueue, but should work fine with a single queue.
- **/
-static int ixgbevf_alloc_queues(struct ixgbevf_adapter *adapter)
-{
- int i;
-
- adapter->tx_ring = kcalloc(adapter->num_tx_queues,
- sizeof(struct ixgbevf_ring), GFP_KERNEL);
- if (!adapter->tx_ring)
- goto err_tx_ring_allocation;
-
- adapter->rx_ring = kcalloc(adapter->num_rx_queues,
- sizeof(struct ixgbevf_ring), GFP_KERNEL);
- if (!adapter->rx_ring)
- goto err_rx_ring_allocation;
-
- for (i = 0; i < adapter->num_tx_queues; i++) {
- adapter->tx_ring[i].count = adapter->tx_ring_count;
- adapter->tx_ring[i].queue_index = i;
- adapter->tx_ring[i].reg_idx = i;
- }
-
- for (i = 0; i < adapter->num_rx_queues; i++) {
- adapter->rx_ring[i].count = adapter->rx_ring_count;
- adapter->rx_ring[i].queue_index = i;
- adapter->rx_ring[i].reg_idx = i;
- }
-
- return 0;
-
-err_rx_ring_allocation:
- kfree(adapter->tx_ring);
-err_tx_ring_allocation:
- return -ENOMEM;
-}
-
-/**
- * ixgbevf_set_interrupt_capability - set MSI-X or FAIL if not supported
- * @adapter: board private structure to initialize
- *
- * Attempt to configure the interrupts using the best available
- * capabilities of the hardware and the kernel.
- **/
-static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter *adapter)
-{
- int err = 0;
- int vector, v_budget;
-
- /*
- * It's easy to be greedy for MSI-X vectors, but it really
- * doesn't do us much good if we have a lot more vectors
- * than CPU's. So let's be conservative and only ask for
- * (roughly) twice the number of vectors as there are CPU's.
- */
- v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
- (int)(num_online_cpus() * 2)) + NON_Q_VECTORS;
-
- /* A failure in MSI-X entry allocation isn't fatal, but it does
- * mean we disable MSI-X capabilities of the adapter. */
- adapter->msix_entries = kcalloc(v_budget,
- sizeof(struct msix_entry), GFP_KERNEL);
- if (!adapter->msix_entries) {
- err = -ENOMEM;
- goto out;
- }
-
- for (vector = 0; vector < v_budget; vector++)
- adapter->msix_entries[vector].entry = vector;
-
- ixgbevf_acquire_msix_vectors(adapter, v_budget);
-
-out:
- return err;
-}
-
-/**
- * ixgbevf_alloc_q_vectors - Allocate memory for interrupt vectors
- * @adapter: board private structure to initialize
- *
- * We allocate one q_vector per queue interrupt. If allocation fails we
- * return -ENOMEM.
- **/
-static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter *adapter)
-{
- int q_idx, num_q_vectors;
- struct ixgbevf_q_vector *q_vector;
- int napi_vectors;
- int (*poll)(struct napi_struct *, int);
-
- num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
- napi_vectors = adapter->num_rx_queues;
- poll = &ixgbevf_clean_rxonly;
-
- for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
- q_vector = kzalloc(sizeof(struct ixgbevf_q_vector), GFP_KERNEL);
- if (!q_vector)
- goto err_out;
- q_vector->adapter = adapter;
- q_vector->v_idx = q_idx;
- q_vector->eitr = adapter->eitr_param;
- if (q_idx < napi_vectors)
- netif_napi_add(adapter->netdev, &q_vector->napi,
- (*poll), 64);
- adapter->q_vector[q_idx] = q_vector;
- }
-
- return 0;
-
-err_out:
- while (q_idx) {
- q_idx--;
- q_vector = adapter->q_vector[q_idx];
- netif_napi_del(&q_vector->napi);
- kfree(q_vector);
- adapter->q_vector[q_idx] = NULL;
- }
- return -ENOMEM;
-}
-
-/**
- * ixgbevf_free_q_vectors - Free memory allocated for interrupt vectors
- * @adapter: board private structure to initialize
- *
- * This function frees the memory allocated to the q_vectors. In addition if
- * NAPI is enabled it will delete any references to the NAPI struct prior
- * to freeing the q_vector.
- **/
-static void ixgbevf_free_q_vectors(struct ixgbevf_adapter *adapter)
-{
- int q_idx, num_q_vectors;
- int napi_vectors;
-
- num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
- napi_vectors = adapter->num_rx_queues;
-
- for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
- struct ixgbevf_q_vector *q_vector = adapter->q_vector[q_idx];
-
- adapter->q_vector[q_idx] = NULL;
- if (q_idx < napi_vectors)
- netif_napi_del(&q_vector->napi);
- kfree(q_vector);
- }
-}
-
-/**
- * ixgbevf_reset_interrupt_capability - Reset MSIX setup
- * @adapter: board private structure
- *
- **/
-static void ixgbevf_reset_interrupt_capability(struct ixgbevf_adapter *adapter)
-{
- pci_disable_msix(adapter->pdev);
- kfree(adapter->msix_entries);
- adapter->msix_entries = NULL;
-}
-
-/**
- * ixgbevf_init_interrupt_scheme - Determine if MSIX is supported and init
- * @adapter: board private structure to initialize
- *
- **/
-static int ixgbevf_init_interrupt_scheme(struct ixgbevf_adapter *adapter)
-{
- int err;
-
- /* Number of supported queues */
- ixgbevf_set_num_queues(adapter);
-
- err = ixgbevf_set_interrupt_capability(adapter);
- if (err) {
- hw_dbg(&adapter->hw,
- "Unable to setup interrupt capabilities\n");
- goto err_set_interrupt;
- }
-
- err = ixgbevf_alloc_q_vectors(adapter);
- if (err) {
- hw_dbg(&adapter->hw, "Unable to allocate memory for queue "
- "vectors\n");
- goto err_alloc_q_vectors;
- }
-
- err = ixgbevf_alloc_queues(adapter);
- if (err) {
- printk(KERN_ERR "Unable to allocate memory for queues\n");
- goto err_alloc_queues;
- }
-
- hw_dbg(&adapter->hw, "Multiqueue %s: Rx Queue count = %u, "
- "Tx Queue count = %u\n",
- (adapter->num_rx_queues > 1) ? "Enabled" :
- "Disabled", adapter->num_rx_queues, adapter->num_tx_queues);
-
- set_bit(__IXGBEVF_DOWN, &adapter->state);
-
- return 0;
-err_alloc_queues:
- ixgbevf_free_q_vectors(adapter);
-err_alloc_q_vectors:
- ixgbevf_reset_interrupt_capability(adapter);
-err_set_interrupt:
- return err;
-}
-
-/**
- * ixgbevf_sw_init - Initialize general software structures
- * (struct ixgbevf_adapter)
- * @adapter: board private structure to initialize
- *
- * ixgbevf_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 ixgbevf_sw_init(struct ixgbevf_adapter *adapter)
-{
- struct ixgbe_hw *hw = &adapter->hw;
- struct pci_dev *pdev = adapter->pdev;
- int err;
-
- /* PCI config space info */
-
- hw->vendor_id = pdev->vendor;
- hw->device_id = pdev->device;
- hw->revision_id = pdev->revision;
- hw->subsystem_vendor_id = pdev->subsystem_vendor;
- hw->subsystem_device_id = pdev->subsystem_device;
-
- hw->mbx.ops.init_params(hw);
- hw->mac.max_tx_queues = MAX_TX_QUEUES;
- hw->mac.max_rx_queues = MAX_RX_QUEUES;
- err = hw->mac.ops.reset_hw(hw);
- if (err) {
- dev_info(&pdev->dev,
- "PF still in reset state, assigning new address\n");
- dev_hw_addr_random(adapter->netdev, hw->mac.addr);
- } else {
- err = hw->mac.ops.init_hw(hw);
- if (err) {
- printk(KERN_ERR "init_shared_code failed: %d\n", err);
- goto out;
- }
- }
-
- /* Enable dynamic interrupt throttling rates */
- adapter->eitr_param = 20000;
- adapter->itr_setting = 1;
-
- /* set defaults for eitr in MegaBytes */
- adapter->eitr_low = 10;
- adapter->eitr_high = 20;
-
- /* set default ring sizes */
- adapter->tx_ring_count = IXGBEVF_DEFAULT_TXD;
- adapter->rx_ring_count = IXGBEVF_DEFAULT_RXD;
-
- /* enable rx csum by default */
- adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
-
- set_bit(__IXGBEVF_DOWN, &adapter->state);
-
-out:
- return err;
-}
-
-#define UPDATE_VF_COUNTER_32bit(reg, last_counter, counter) \
- { \
- u32 current_counter = IXGBE_READ_REG(hw, reg); \
- if (current_counter < last_counter) \
- counter += 0x100000000LL; \
- last_counter = current_counter; \
- counter &= 0xFFFFFFFF00000000LL; \
- counter |= current_counter; \
- }
-
-#define UPDATE_VF_COUNTER_36bit(reg_lsb, reg_msb, last_counter, counter) \
- { \
- u64 current_counter_lsb = IXGBE_READ_REG(hw, reg_lsb); \
- u64 current_counter_msb = IXGBE_READ_REG(hw, reg_msb); \
- u64 current_counter = (current_counter_msb << 32) | \
- current_counter_lsb; \
- if (current_counter < last_counter) \
- counter += 0x1000000000LL; \
- last_counter = current_counter; \
- counter &= 0xFFFFFFF000000000LL; \
- counter |= current_counter; \
- }
-/**
- * ixgbevf_update_stats - Update the board statistics counters.
- * @adapter: board private structure
- **/
-void ixgbevf_update_stats(struct ixgbevf_adapter *adapter)
-{
- struct ixgbe_hw *hw = &adapter->hw;
-
- UPDATE_VF_COUNTER_32bit(IXGBE_VFGPRC, adapter->stats.last_vfgprc,
- adapter->stats.vfgprc);
- UPDATE_VF_COUNTER_32bit(IXGBE_VFGPTC, adapter->stats.last_vfgptc,
- adapter->stats.vfgptc);
- UPDATE_VF_COUNTER_36bit(IXGBE_VFGORC_LSB, IXGBE_VFGORC_MSB,
- adapter->stats.last_vfgorc,
- adapter->stats.vfgorc);
- UPDATE_VF_COUNTER_36bit(IXGBE_VFGOTC_LSB, IXGBE_VFGOTC_MSB,
- adapter->stats.last_vfgotc,
- adapter->stats.vfgotc);
- UPDATE_VF_COUNTER_32bit(IXGBE_VFMPRC, adapter->stats.last_vfmprc,
- adapter->stats.vfmprc);
-
- /* Fill out the OS statistics structure */
- adapter->netdev->stats.multicast = adapter->stats.vfmprc -
- adapter->stats.base_vfmprc;
-}
-
-/**
- * ixgbevf_watchdog - Timer Call-back
- * @data: pointer to adapter cast into an unsigned long
- **/
-static void ixgbevf_watchdog(unsigned long data)
-{
- struct ixgbevf_adapter *adapter = (struct ixgbevf_adapter *)data;
- struct ixgbe_hw *hw = &adapter->hw;
- u64 eics = 0;
- int i;
-
- /*
- * Do the watchdog outside of interrupt context due to the lovely
- * delays that some of the newer hardware requires
- */
-
- if (test_bit(__IXGBEVF_DOWN, &adapter->state))
- goto watchdog_short_circuit;
-
- /* get one bit for every active tx/rx interrupt vector */
- for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) {
- struct ixgbevf_q_vector *qv = adapter->q_vector[i];
- if (qv->rxr_count || qv->txr_count)
- eics |= (1 << i);
- }
-
- IXGBE_WRITE_REG(hw, IXGBE_VTEICS, (u32)eics);
-
-watchdog_short_circuit:
- schedule_work(&adapter->watchdog_task);
-}
-
-/**
- * ixgbevf_tx_timeout - Respond to a Tx Hang
- * @netdev: network interface device structure
- **/
-static void ixgbevf_tx_timeout(struct net_device *netdev)
-{
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
-
- /* Do the reset outside of interrupt context */
- schedule_work(&adapter->reset_task);
-}
-
-static void ixgbevf_reset_task(struct work_struct *work)
-{
- struct ixgbevf_adapter *adapter;
- adapter = container_of(work, struct ixgbevf_adapter, reset_task);
-
- /* If we're already down or resetting, just bail */
- if (test_bit(__IXGBEVF_DOWN, &adapter->state) ||
- test_bit(__IXGBEVF_RESETTING, &adapter->state))
- return;
-
- adapter->tx_timeout_count++;
-
- ixgbevf_reinit_locked(adapter);
-}
-
-/**
- * ixgbevf_watchdog_task - worker thread to bring link up
- * @work: pointer to work_struct containing our data
- **/
-static void ixgbevf_watchdog_task(struct work_struct *work)
-{
- struct ixgbevf_adapter *adapter = container_of(work,
- struct ixgbevf_adapter,
- watchdog_task);
- struct net_device *netdev = adapter->netdev;
- struct ixgbe_hw *hw = &adapter->hw;
- u32 link_speed = adapter->link_speed;
- bool link_up = adapter->link_up;
-
- adapter->flags |= IXGBE_FLAG_IN_WATCHDOG_TASK;
-
- /*
- * Always check the link on the watchdog because we have
- * no LSC interrupt
- */
- if (hw->mac.ops.check_link) {
- if ((hw->mac.ops.check_link(hw, &link_speed,
- &link_up, false)) != 0) {
- adapter->link_up = link_up;
- adapter->link_speed = link_speed;
- netif_carrier_off(netdev);
- netif_tx_stop_all_queues(netdev);
- schedule_work(&adapter->reset_task);
- goto pf_has_reset;
- }
- } else {
- /* always assume link is up, if no check link
- * function */
- link_speed = IXGBE_LINK_SPEED_10GB_FULL;
- link_up = true;
- }
- adapter->link_up = link_up;
- adapter->link_speed = link_speed;
-
- if (link_up) {
- if (!netif_carrier_ok(netdev)) {
- hw_dbg(&adapter->hw, "NIC Link is Up, %u Gbps\n",
- (link_speed == IXGBE_LINK_SPEED_10GB_FULL) ?
- 10 : 1);
- netif_carrier_on(netdev);
- netif_tx_wake_all_queues(netdev);
- }
- } else {
- adapter->link_up = false;
- adapter->link_speed = 0;
- if (netif_carrier_ok(netdev)) {
- hw_dbg(&adapter->hw, "NIC Link is Down\n");
- netif_carrier_off(netdev);
- netif_tx_stop_all_queues(netdev);
- }
- }
-
- ixgbevf_update_stats(adapter);
-
-pf_has_reset:
- /* Reset the timer */
- if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
- mod_timer(&adapter->watchdog_timer,
- round_jiffies(jiffies + (2 * HZ)));
-
- adapter->flags &= ~IXGBE_FLAG_IN_WATCHDOG_TASK;
-}
-
-/**
- * ixgbevf_free_tx_resources - Free Tx Resources per Queue
- * @adapter: board private structure
- * @tx_ring: Tx descriptor ring for a specific queue
- *
- * Free all transmit software resources
- **/
-void ixgbevf_free_tx_resources(struct ixgbevf_adapter *adapter,
- struct ixgbevf_ring *tx_ring)
-{
- struct pci_dev *pdev = adapter->pdev;
-
- ixgbevf_clean_tx_ring(adapter, tx_ring);
-
- vfree(tx_ring->tx_buffer_info);
- tx_ring->tx_buffer_info = NULL;
-
- dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
- tx_ring->dma);
-
- tx_ring->desc = NULL;
-}
-
-/**
- * ixgbevf_free_all_tx_resources - Free Tx Resources for All Queues
- * @adapter: board private structure
- *
- * Free all transmit software resources
- **/
-static void ixgbevf_free_all_tx_resources(struct ixgbevf_adapter *adapter)
-{
- int i;
-
- for (i = 0; i < adapter->num_tx_queues; i++)
- if (adapter->tx_ring[i].desc)
- ixgbevf_free_tx_resources(adapter,
- &adapter->tx_ring[i]);
-
-}
-
-/**
- * ixgbevf_setup_tx_resources - allocate Tx resources (Descriptors)
- * @adapter: board private structure
- * @tx_ring: tx descriptor ring (for a specific queue) to setup
- *
- * Return 0 on success, negative on failure
- **/
-int ixgbevf_setup_tx_resources(struct ixgbevf_adapter *adapter,
- struct ixgbevf_ring *tx_ring)
-{
- struct pci_dev *pdev = adapter->pdev;
- int size;
-
- size = sizeof(struct ixgbevf_tx_buffer) * tx_ring->count;
- tx_ring->tx_buffer_info = vzalloc(size);
- if (!tx_ring->tx_buffer_info)
- goto err;
-
- /* round up to nearest 4K */
- tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
- tx_ring->size = ALIGN(tx_ring->size, 4096);
-
- tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
- &tx_ring->dma, GFP_KERNEL);
- if (!tx_ring->desc)
- goto err;
-
- tx_ring->next_to_use = 0;
- tx_ring->next_to_clean = 0;
- tx_ring->work_limit = tx_ring->count;
- return 0;
-
-err:
- vfree(tx_ring->tx_buffer_info);
- tx_ring->tx_buffer_info = NULL;
- hw_dbg(&adapter->hw, "Unable to allocate memory for the transmit "
- "descriptor ring\n");
- return -ENOMEM;
-}
-
-/**
- * ixgbevf_setup_all_tx_resources - allocate all queues Tx resources
- * @adapter: board private structure
- *
- * If this function returns with an error, then it's possible one or
- * more of the rings is populated (while the rest are not). It is the
- * callers duty to clean those orphaned rings.
- *
- * Return 0 on success, negative on failure
- **/
-static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter *adapter)
-{
- int i, err = 0;
-
- for (i = 0; i < adapter->num_tx_queues; i++) {
- err = ixgbevf_setup_tx_resources(adapter, &adapter->tx_ring[i]);
- if (!err)
- continue;
- hw_dbg(&adapter->hw,
- "Allocation for Tx Queue %u failed\n", i);
- break;
- }
-
- return err;
-}
-
-/**
- * ixgbevf_setup_rx_resources - allocate Rx resources (Descriptors)
- * @adapter: board private structure
- * @rx_ring: rx descriptor ring (for a specific queue) to setup
- *
- * Returns 0 on success, negative on failure
- **/
-int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *adapter,
- struct ixgbevf_ring *rx_ring)
-{
- struct pci_dev *pdev = adapter->pdev;
- int size;
-
- size = sizeof(struct ixgbevf_rx_buffer) * rx_ring->count;
- rx_ring->rx_buffer_info = vzalloc(size);
- if (!rx_ring->rx_buffer_info) {
- hw_dbg(&adapter->hw,
- "Unable to vmalloc buffer memory for "
- "the receive descriptor ring\n");
- goto alloc_failed;
- }
-
- /* Round up to nearest 4K */
- rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
- rx_ring->size = ALIGN(rx_ring->size, 4096);
-
- rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
- &rx_ring->dma, GFP_KERNEL);
-
- if (!rx_ring->desc) {
- hw_dbg(&adapter->hw,
- "Unable to allocate memory for "
- "the receive descriptor ring\n");
- vfree(rx_ring->rx_buffer_info);
- rx_ring->rx_buffer_info = NULL;
- goto alloc_failed;
- }
-
- rx_ring->next_to_clean = 0;
- rx_ring->next_to_use = 0;
-
- return 0;
-alloc_failed:
- return -ENOMEM;
-}
-
-/**
- * ixgbevf_setup_all_rx_resources - allocate all queues Rx resources
- * @adapter: board private structure
- *
- * If this function returns with an error, then it's possible one or
- * more of the rings is populated (while the rest are not). It is the
- * callers duty to clean those orphaned rings.
- *
- * Return 0 on success, negative on failure
- **/
-static int ixgbevf_setup_all_rx_resources(struct ixgbevf_adapter *adapter)
-{
- int i, err = 0;
-
- for (i = 0; i < adapter->num_rx_queues; i++) {
- err = ixgbevf_setup_rx_resources(adapter, &adapter->rx_ring[i]);
- if (!err)
- continue;
- hw_dbg(&adapter->hw,
- "Allocation for Rx Queue %u failed\n", i);
- break;
- }
- return err;
-}
-
-/**
- * ixgbevf_free_rx_resources - Free Rx Resources
- * @adapter: board private structure
- * @rx_ring: ring to clean the resources from
- *
- * Free all receive software resources
- **/
-void ixgbevf_free_rx_resources(struct ixgbevf_adapter *adapter,
- struct ixgbevf_ring *rx_ring)
-{
- struct pci_dev *pdev = adapter->pdev;
-
- ixgbevf_clean_rx_ring(adapter, rx_ring);
-
- vfree(rx_ring->rx_buffer_info);
- rx_ring->rx_buffer_info = NULL;
-
- dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
- rx_ring->dma);
-
- rx_ring->desc = NULL;
-}
-
-/**
- * ixgbevf_free_all_rx_resources - Free Rx Resources for All Queues
- * @adapter: board private structure
- *
- * Free all receive software resources
- **/
-static void ixgbevf_free_all_rx_resources(struct ixgbevf_adapter *adapter)
-{
- int i;
-
- for (i = 0; i < adapter->num_rx_queues; i++)
- if (adapter->rx_ring[i].desc)
- ixgbevf_free_rx_resources(adapter,
- &adapter->rx_ring[i]);
-}
-
-/**
- * ixgbevf_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 ixgbevf_open(struct net_device *netdev)
-{
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
- struct ixgbe_hw *hw = &adapter->hw;
- int err;
-
- /* disallow open during test */
- if (test_bit(__IXGBEVF_TESTING, &adapter->state))
- return -EBUSY;
-
- if (hw->adapter_stopped) {
- ixgbevf_reset(adapter);
- /* if adapter is still stopped then PF isn't up and
- * the vf can't start. */
- if (hw->adapter_stopped) {
- err = IXGBE_ERR_MBX;
- printk(KERN_ERR "Unable to start - perhaps the PF"
- " Driver isn't up yet\n");
- goto err_setup_reset;
- }
- }
-
- /* allocate transmit descriptors */
- err = ixgbevf_setup_all_tx_resources(adapter);
- if (err)
- goto err_setup_tx;
-
- /* allocate receive descriptors */
- err = ixgbevf_setup_all_rx_resources(adapter);
- if (err)
- goto err_setup_rx;
-
- ixgbevf_configure(adapter);
-
- /*
- * Map the Tx/Rx rings to the vectors we were allotted.
- * if request_irq will be called in this function map_rings
- * must be called *before* up_complete
- */
- ixgbevf_map_rings_to_vectors(adapter);
-
- err = ixgbevf_up_complete(adapter);
- if (err)
- goto err_up;
-
- /* clear any pending interrupts, may auto mask */
- IXGBE_READ_REG(hw, IXGBE_VTEICR);
- err = ixgbevf_request_irq(adapter);
- if (err)
- goto err_req_irq;
-
- ixgbevf_irq_enable(adapter, true, true);
-
- return 0;
-
-err_req_irq:
- ixgbevf_down(adapter);
-err_up:
- ixgbevf_free_irq(adapter);
-err_setup_rx:
- ixgbevf_free_all_rx_resources(adapter);
-err_setup_tx:
- ixgbevf_free_all_tx_resources(adapter);
- ixgbevf_reset(adapter);
-
-err_setup_reset:
-
- return err;
-}
-
-/**
- * ixgbevf_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 ixgbevf_close(struct net_device *netdev)
-{
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
-
- ixgbevf_down(adapter);
- ixgbevf_free_irq(adapter);
-
- ixgbevf_free_all_tx_resources(adapter);
- ixgbevf_free_all_rx_resources(adapter);
-
- return 0;
-}
-
-static int ixgbevf_tso(struct ixgbevf_adapter *adapter,
- struct ixgbevf_ring *tx_ring,
- struct sk_buff *skb, u32 tx_flags, u8 *hdr_len)
-{
- struct ixgbe_adv_tx_context_desc *context_desc;
- unsigned int i;
- int err;
- struct ixgbevf_tx_buffer *tx_buffer_info;
- u32 vlan_macip_lens = 0, type_tucmd_mlhl;
- u32 mss_l4len_idx, l4len;
-
- if (skb_is_gso(skb)) {
- if (skb_header_cloned(skb)) {
- err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
- if (err)
- 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);
- adapter->hw_tso_ctxt++;
- } else if (skb_is_gso_v6(skb)) {
- 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);
- adapter->hw_tso6_ctxt++;
- }
-
- i = tx_ring->next_to_use;
-
- tx_buffer_info = &tx_ring->tx_buffer_info[i];
- context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
-
- /* VLAN MACLEN IPLEN */
- if (tx_flags & IXGBE_TX_FLAGS_VLAN)
- vlan_macip_lens |=
- (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
- vlan_macip_lens |= ((skb_network_offset(skb)) <<
- IXGBE_ADVTXD_MACLEN_SHIFT);
- *hdr_len += skb_network_offset(skb);
- vlan_macip_lens |=
- (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(vlan_macip_lens);
- context_desc->seqnum_seed = 0;
-
- /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
- type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT |
- IXGBE_ADVTXD_DTYP_CTXT);
-
- if (skb->protocol == htons(ETH_P_IP))
- type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
- type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
- context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
-
- /* MSS L4LEN IDX */
- mss_l4len_idx =
- (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT);
- mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT);
- /* use index 1 for TSO */
- mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
- context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
-
- tx_buffer_info->time_stamp = jiffies;
- tx_buffer_info->next_to_watch = i;
-
- i++;
- if (i == tx_ring->count)
- i = 0;
- tx_ring->next_to_use = i;
-
- return true;
- }
-
- return false;
-}
-
-static bool ixgbevf_tx_csum(struct ixgbevf_adapter *adapter,
- struct ixgbevf_ring *tx_ring,
- struct sk_buff *skb, u32 tx_flags)
-{
- struct ixgbe_adv_tx_context_desc *context_desc;
- unsigned int i;
- struct ixgbevf_tx_buffer *tx_buffer_info;
- u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0;
-
- if (skb->ip_summed == CHECKSUM_PARTIAL ||
- (tx_flags & IXGBE_TX_FLAGS_VLAN)) {
- i = tx_ring->next_to_use;
- tx_buffer_info = &tx_ring->tx_buffer_info[i];
- context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
-
- if (tx_flags & IXGBE_TX_FLAGS_VLAN)
- vlan_macip_lens |= (tx_flags &
- IXGBE_TX_FLAGS_VLAN_MASK);
- vlan_macip_lens |= (skb_network_offset(skb) <<
- IXGBE_ADVTXD_MACLEN_SHIFT);
- if (skb->ip_summed == CHECKSUM_PARTIAL)
- vlan_macip_lens |= (skb_transport_header(skb) -
- skb_network_header(skb));
-
- context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
- context_desc->seqnum_seed = 0;
-
- type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT |
- IXGBE_ADVTXD_DTYP_CTXT);
-
- if (skb->ip_summed == CHECKSUM_PARTIAL) {
- switch (skb->protocol) {
- case __constant_htons(ETH_P_IP):
- type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
- if (ip_hdr(skb)->protocol == IPPROTO_TCP)
- type_tucmd_mlhl |=
- IXGBE_ADVTXD_TUCMD_L4T_TCP;
- break;
- case __constant_htons(ETH_P_IPV6):
- /* XXX what about other V6 headers?? */
- if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
- type_tucmd_mlhl |=
- IXGBE_ADVTXD_TUCMD_L4T_TCP;
- break;
- default:
- if (unlikely(net_ratelimit())) {
- printk(KERN_WARNING
- "partial checksum but "
- "proto=%x!\n",
- skb->protocol);
- }
- break;
- }
- }
-
- context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
- /* use index zero for tx checksum offload */
- context_desc->mss_l4len_idx = 0;
-
- tx_buffer_info->time_stamp = jiffies;
- tx_buffer_info->next_to_watch = i;
-
- adapter->hw_csum_tx_good++;
- i++;
- if (i == tx_ring->count)
- i = 0;
- tx_ring->next_to_use = i;
-
- return true;
- }
-
- return false;
-}
-
-static int ixgbevf_tx_map(struct ixgbevf_adapter *adapter,
- struct ixgbevf_ring *tx_ring,
- struct sk_buff *skb, u32 tx_flags,
- unsigned int first)
-{
- struct pci_dev *pdev = adapter->pdev;
- struct ixgbevf_tx_buffer *tx_buffer_info;
- unsigned int len;
- unsigned int total = skb->len;
- unsigned int offset = 0, size;
- int count = 0;
- unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
- unsigned int f;
- int i;
-
- i = tx_ring->next_to_use;
-
- len = min(skb_headlen(skb), total);
- while (len) {
- tx_buffer_info = &tx_ring->tx_buffer_info[i];
- size = min(len, (unsigned int)IXGBE_MAX_DATA_PER_TXD);
-
- tx_buffer_info->length = size;
- tx_buffer_info->mapped_as_page = false;
- tx_buffer_info->dma = dma_map_single(&adapter->pdev->dev,
- skb->data + offset,
- size, DMA_TO_DEVICE);
- if (dma_mapping_error(&pdev->dev, tx_buffer_info->dma))
- goto dma_error;
- tx_buffer_info->time_stamp = jiffies;
- tx_buffer_info->next_to_watch = i;
-
- len -= size;
- total -= size;
- offset += size;
- count++;
- i++;
- if (i == tx_ring->count)
- i = 0;
- }
-
- for (f = 0; f < nr_frags; f++) {
- struct skb_frag_struct *frag;
-
- frag = &skb_shinfo(skb)->frags[f];
- len = min((unsigned int)frag->size, total);
- offset = frag->page_offset;
-
- while (len) {
- tx_buffer_info = &tx_ring->tx_buffer_info[i];
- size = min(len, (unsigned int)IXGBE_MAX_DATA_PER_TXD);
-
- tx_buffer_info->length = size;
- tx_buffer_info->dma = dma_map_page(&adapter->pdev->dev,
- frag->page,
- offset,
- size,
- DMA_TO_DEVICE);
- tx_buffer_info->mapped_as_page = true;
- if (dma_mapping_error(&pdev->dev, tx_buffer_info->dma))
- goto dma_error;
- tx_buffer_info->time_stamp = jiffies;
- tx_buffer_info->next_to_watch = i;
-
- len -= size;
- total -= size;
- offset += size;
- count++;
- i++;
- if (i == tx_ring->count)
- i = 0;
- }
- if (total == 0)
- break;
- }
-
- if (i == 0)
- i = tx_ring->count - 1;
- else
- i = i - 1;
- tx_ring->tx_buffer_info[i].skb = skb;
- tx_ring->tx_buffer_info[first].next_to_watch = i;
-
- return count;
-
-dma_error:
- dev_err(&pdev->dev, "TX DMA map failed\n");
-
- /* clear timestamp and dma mappings for failed tx_buffer_info map */
- tx_buffer_info->dma = 0;
- tx_buffer_info->time_stamp = 0;
- tx_buffer_info->next_to_watch = 0;
- count--;
-
- /* clear timestamp and dma mappings for remaining portion of packet */
- while (count >= 0) {
- count--;
- i--;
- if (i < 0)
- i += tx_ring->count;
- tx_buffer_info = &tx_ring->tx_buffer_info[i];
- ixgbevf_unmap_and_free_tx_resource(adapter, tx_buffer_info);
- }
-
- return count;
-}
-
-static void ixgbevf_tx_queue(struct ixgbevf_adapter *adapter,
- struct ixgbevf_ring *tx_ring, int tx_flags,
- int count, u32 paylen, u8 hdr_len)
-{
- union ixgbe_adv_tx_desc *tx_desc = NULL;
- struct ixgbevf_tx_buffer *tx_buffer_info;
- u32 olinfo_status = 0, cmd_type_len = 0;
- unsigned int i;
-
- u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS;
-
- cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA;
-
- cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
-
- if (tx_flags & IXGBE_TX_FLAGS_VLAN)
- cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE;
-
- if (tx_flags & IXGBE_TX_FLAGS_TSO) {
- cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
-
- olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
- IXGBE_ADVTXD_POPTS_SHIFT;
-
- /* use index 1 context for tso */
- olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
- if (tx_flags & IXGBE_TX_FLAGS_IPV4)
- olinfo_status |= IXGBE_TXD_POPTS_IXSM <<
- IXGBE_ADVTXD_POPTS_SHIFT;
-
- } else if (tx_flags & IXGBE_TX_FLAGS_CSUM)
- olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
- IXGBE_ADVTXD_POPTS_SHIFT;
-
- olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
-
- i = tx_ring->next_to_use;
- while (count--) {
- tx_buffer_info = &tx_ring->tx_buffer_info[i];
- tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
- tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma);
- tx_desc->read.cmd_type_len =
- cpu_to_le32(cmd_type_len | tx_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(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);
-}
-
-static int __ixgbevf_maybe_stop_tx(struct net_device *netdev,
- struct ixgbevf_ring *tx_ring, int size)
-{
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
-
- netif_stop_subqueue(netdev, tx_ring->queue_index);
- /* Herbert's original patch had:
- * smp_mb__after_netif_stop_queue();
- * but since that doesn't exist yet, just open code it. */
- smp_mb();
-
- /* We need to check again in a case another CPU has just
- * made room available. */
- if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
- return -EBUSY;
-
- /* A reprieve! - use start_queue because it doesn't call schedule */
- netif_start_subqueue(netdev, tx_ring->queue_index);
- ++adapter->restart_queue;
- return 0;
-}
-
-static int ixgbevf_maybe_stop_tx(struct net_device *netdev,
- struct ixgbevf_ring *tx_ring, int size)
-{
- if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
- return 0;
- return __ixgbevf_maybe_stop_tx(netdev, tx_ring, size);
-}
-
-static int ixgbevf_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
-{
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
- struct ixgbevf_ring *tx_ring;
- unsigned int first;
- unsigned int tx_flags = 0;
- u8 hdr_len = 0;
- int r_idx = 0, tso;
- int count = 0;
-
- unsigned int f;
-
- tx_ring = &adapter->tx_ring[r_idx];
-
- if (vlan_tx_tag_present(skb)) {
- tx_flags |= vlan_tx_tag_get(skb);
- tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
- tx_flags |= IXGBE_TX_FLAGS_VLAN;
- }
-
- /* four things can cause us to need a context descriptor */
- if (skb_is_gso(skb) ||
- (skb->ip_summed == CHECKSUM_PARTIAL) ||
- (tx_flags & IXGBE_TX_FLAGS_VLAN))
- count++;
-
- count += TXD_USE_COUNT(skb_headlen(skb));
- for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
- count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
-
- if (ixgbevf_maybe_stop_tx(netdev, tx_ring, count)) {
- adapter->tx_busy++;
- return NETDEV_TX_BUSY;
- }
-
- first = tx_ring->next_to_use;
-
- if (skb->protocol == htons(ETH_P_IP))
- tx_flags |= IXGBE_TX_FLAGS_IPV4;
- tso = ixgbevf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len);
- if (tso < 0) {
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
-
- if (tso)
- tx_flags |= IXGBE_TX_FLAGS_TSO;
- else if (ixgbevf_tx_csum(adapter, tx_ring, skb, tx_flags) &&
- (skb->ip_summed == CHECKSUM_PARTIAL))
- tx_flags |= IXGBE_TX_FLAGS_CSUM;
-
- ixgbevf_tx_queue(adapter, tx_ring, tx_flags,
- ixgbevf_tx_map(adapter, tx_ring, skb, tx_flags, first),
- skb->len, hdr_len);
-
- ixgbevf_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED);
-
- return NETDEV_TX_OK;
-}
-
-/**
- * ixgbevf_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 ixgbevf_set_mac(struct net_device *netdev, void *p)
-{
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
- struct ixgbe_hw *hw = &adapter->hw;
- struct sockaddr *addr = p;
-
- if (!is_valid_ether_addr(addr->sa_data))
- return -EADDRNOTAVAIL;
-
- memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
- memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
-
- if (hw->mac.ops.set_rar)
- hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0);
-
- return 0;
-}
-
-/**
- * ixgbevf_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 ixgbevf_change_mtu(struct net_device *netdev, int new_mtu)
-{
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
- struct ixgbe_hw *hw = &adapter->hw;
- int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
- int max_possible_frame = MAXIMUM_ETHERNET_VLAN_SIZE;
- u32 msg[2];
-
- if (adapter->hw.mac.type == ixgbe_mac_X540_vf)
- max_possible_frame = IXGBE_MAX_JUMBO_FRAME_SIZE;
-
- /* MTU < 68 is an error and causes problems on some kernels */
- if ((new_mtu < 68) || (max_frame > max_possible_frame))
- return -EINVAL;
-
- hw_dbg(&adapter->hw, "changing MTU from %d to %d\n",
- netdev->mtu, new_mtu);
- /* must set new MTU before calling down or up */
- netdev->mtu = new_mtu;
-
- msg[0] = IXGBE_VF_SET_LPE;
- msg[1] = max_frame;
- hw->mbx.ops.write_posted(hw, msg, 2);
-
- if (netif_running(netdev))
- ixgbevf_reinit_locked(adapter);
-
- return 0;
-}
-
-static void ixgbevf_shutdown(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
-
- netif_device_detach(netdev);
-
- if (netif_running(netdev)) {
- ixgbevf_down(adapter);
- ixgbevf_free_irq(adapter);
- ixgbevf_free_all_tx_resources(adapter);
- ixgbevf_free_all_rx_resources(adapter);
- }
-
-#ifdef CONFIG_PM
- pci_save_state(pdev);
-#endif
-
- pci_disable_device(pdev);
-}
-
-static const struct net_device_ops ixgbe_netdev_ops = {
- .ndo_open = ixgbevf_open,
- .ndo_stop = ixgbevf_close,
- .ndo_start_xmit = ixgbevf_xmit_frame,
- .ndo_set_rx_mode = ixgbevf_set_rx_mode,
- .ndo_set_multicast_list = ixgbevf_set_rx_mode,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = ixgbevf_set_mac,
- .ndo_change_mtu = ixgbevf_change_mtu,
- .ndo_tx_timeout = ixgbevf_tx_timeout,
- .ndo_vlan_rx_add_vid = ixgbevf_vlan_rx_add_vid,
- .ndo_vlan_rx_kill_vid = ixgbevf_vlan_rx_kill_vid,
-};
-
-static void ixgbevf_assign_netdev_ops(struct net_device *dev)
-{
- dev->netdev_ops = &ixgbe_netdev_ops;
- ixgbevf_set_ethtool_ops(dev);
- dev->watchdog_timeo = 5 * HZ;
-}
-
-/**
- * ixgbevf_probe - Device Initialization Routine
- * @pdev: PCI device information struct
- * @ent: entry in ixgbevf_pci_tbl
- *
- * Returns 0 on success, negative on failure
- *
- * ixgbevf_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 ixgbevf_probe(struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- struct net_device *netdev;
- struct ixgbevf_adapter *adapter = NULL;
- struct ixgbe_hw *hw = NULL;
- const struct ixgbevf_info *ii = ixgbevf_info_tbl[ent->driver_data];
- static int cards_found;
- int err, pci_using_dac;
-
- err = pci_enable_device(pdev);
- if (err)
- return err;
-
- if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
- !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
- pci_using_dac = 1;
- } else {
- err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
- if (err) {
- err = dma_set_coherent_mask(&pdev->dev,
- DMA_BIT_MASK(32));
- if (err) {
- dev_err(&pdev->dev, "No usable DMA "
- "configuration, aborting\n");
- goto err_dma;
- }
- }
- pci_using_dac = 0;
- }
-
- err = pci_request_regions(pdev, ixgbevf_driver_name);
- if (err) {
- dev_err(&pdev->dev, "pci_request_regions failed 0x%x\n", err);
- goto err_pci_reg;
- }
-
- pci_set_master(pdev);
-
-#ifdef HAVE_TX_MQ
- netdev = alloc_etherdev_mq(sizeof(struct ixgbevf_adapter),
- MAX_TX_QUEUES);
-#else
- netdev = alloc_etherdev(sizeof(struct ixgbevf_adapter));
-#endif
- if (!netdev) {
- err = -ENOMEM;
- goto err_alloc_etherdev;
- }
-
- SET_NETDEV_DEV(netdev, &pdev->dev);
-
- pci_set_drvdata(pdev, netdev);
- adapter = netdev_priv(netdev);
-
- adapter->netdev = netdev;
- adapter->pdev = pdev;
- hw = &adapter->hw;
- hw->back = adapter;
- adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
-
- /*
- * call save state here in standalone driver because it relies on
- * adapter struct to exist, and needs to call netdev_priv
- */
- pci_save_state(pdev);
-
- hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
- pci_resource_len(pdev, 0));
- if (!hw->hw_addr) {
- err = -EIO;
- goto err_ioremap;
- }
-
- ixgbevf_assign_netdev_ops(netdev);
-
- adapter->bd_number = cards_found;
-
- /* Setup hw api */
- memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
- hw->mac.type = ii->mac;
-
- memcpy(&hw->mbx.ops, &ixgbevf_mbx_ops,
- sizeof(struct ixgbe_mbx_operations));
-
- adapter->flags &= ~IXGBE_FLAG_RX_PS_CAPABLE;
- adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
- adapter->flags |= IXGBE_FLAG_RX_1BUF_CAPABLE;
-
- /* setup the private structure */
- err = ixgbevf_sw_init(adapter);
-
- 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;
- netdev->features |= NETIF_F_GRO;
- 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;
-
- if (pci_using_dac)
- netdev->features |= NETIF_F_HIGHDMA;
-
- /* The HW MAC address was set and/or determined in sw_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->dev_addr)) {
- printk(KERN_ERR "invalid MAC address\n");
- err = -EIO;
- goto err_sw_init;
- }
-
- init_timer(&adapter->watchdog_timer);
- adapter->watchdog_timer.function = ixgbevf_watchdog;
- adapter->watchdog_timer.data = (unsigned long)adapter;
-
- INIT_WORK(&adapter->reset_task, ixgbevf_reset_task);
- INIT_WORK(&adapter->watchdog_task, ixgbevf_watchdog_task);
-
- err = ixgbevf_init_interrupt_scheme(adapter);
- if (err)
- goto err_sw_init;
-
- /* pick up the PCI bus settings for reporting later */
- if (hw->mac.ops.get_bus_info)
- hw->mac.ops.get_bus_info(hw);
-
- strcpy(netdev->name, "eth%d");
-
- err = register_netdev(netdev);
- if (err)
- goto err_register;
-
- adapter->netdev_registered = true;
-
- netif_carrier_off(netdev);
-
- ixgbevf_init_last_counter_stats(adapter);
-
- /* print the MAC address */
- hw_dbg(hw, "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\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]);
-
- hw_dbg(hw, "MAC: %d\n", hw->mac.type);
-
- hw_dbg(hw, "LRO is disabled\n");
-
- hw_dbg(hw, "Intel(R) 82599 Virtual Function\n");
- cards_found++;
- return 0;
-
-err_register:
-err_sw_init:
- ixgbevf_reset_interrupt_capability(adapter);
- iounmap(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;
-}
-
-/**
- * ixgbevf_remove - Device Removal Routine
- * @pdev: PCI device information struct
- *
- * ixgbevf_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 ixgbevf_remove(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct ixgbevf_adapter *adapter = netdev_priv(netdev);
-
- set_bit(__IXGBEVF_DOWN, &adapter->state);
-
- del_timer_sync(&adapter->watchdog_timer);
-
- cancel_work_sync(&adapter->reset_task);
- cancel_work_sync(&adapter->watchdog_task);
-
- if (adapter->netdev_registered) {
- unregister_netdev(netdev);
- adapter->netdev_registered = false;
- }
-
- ixgbevf_reset_interrupt_capability(adapter);
-
- iounmap(adapter->hw.hw_addr);
- pci_release_regions(pdev);
-
- hw_dbg(&adapter->hw, "Remove complete\n");
-
- kfree(adapter->tx_ring);
- kfree(adapter->rx_ring);
-
- free_netdev(netdev);
-
- pci_disable_device(pdev);
-}
-
-static struct pci_driver ixgbevf_driver = {
- .name = ixgbevf_driver_name,
- .id_table = ixgbevf_pci_tbl,
- .probe = ixgbevf_probe,
- .remove = __devexit_p(ixgbevf_remove),
- .shutdown = ixgbevf_shutdown,
-};
-
-/**
- * ixgbevf_init_module - Driver Registration Routine
- *
- * ixgbevf_init_module is the first routine called when the driver is
- * loaded. All it does is register with the PCI subsystem.
- **/
-static int __init ixgbevf_init_module(void)
-{
- int ret;
- printk(KERN_INFO "ixgbevf: %s - version %s\n", ixgbevf_driver_string,
- ixgbevf_driver_version);
-
- printk(KERN_INFO "%s\n", ixgbevf_copyright);
-
- ret = pci_register_driver(&ixgbevf_driver);
- return ret;
-}
-
-module_init(ixgbevf_init_module);
-
-/**
- * ixgbevf_exit_module - Driver Exit Cleanup Routine
- *
- * ixgbevf_exit_module is called just before the driver is removed
- * from memory.
- **/
-static void __exit ixgbevf_exit_module(void)
-{
- pci_unregister_driver(&ixgbevf_driver);
-}
-
-#ifdef DEBUG
-/**
- * ixgbevf_get_hw_dev_name - return device name string
- * used by hardware layer to print debugging information
- **/
-char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw)
-{
- struct ixgbevf_adapter *adapter = hw->back;
- return adapter->netdev->name;
-}
-
-#endif
-module_exit(ixgbevf_exit_module);
-
-/* ixgbevf_main.c */