1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2009 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
28 #include <linux/types.h>
29 #include <linux/module.h>
30 #include <linux/pci.h>
31 #include <linux/netdevice.h>
32 #include <linux/vmalloc.h>
33 #include <linux/string.h>
36 #include <linux/tcp.h>
37 #include <linux/pkt_sched.h>
38 #include <linux/ipv6.h>
39 #include <net/checksum.h>
40 #include <net/ip6_checksum.h>
41 #include <linux/ethtool.h>
42 #include <linux/if_vlan.h>
43 #include <scsi/fc/fc_fcoe.h>
46 #include "ixgbe_common.h"
47 #include "ixgbe_dcb_82599.h"
49 char ixgbe_driver_name[] = "ixgbe";
50 static const char ixgbe_driver_string[] =
51 "Intel(R) 10 Gigabit PCI Express Network Driver";
53 #define DRV_VERSION "2.0.44-k2"
54 const char ixgbe_driver_version[] = DRV_VERSION;
55 static char ixgbe_copyright[] = "Copyright (c) 1999-2009 Intel Corporation.";
57 static const struct ixgbe_info *ixgbe_info_tbl[] = {
58 [board_82598] = &ixgbe_82598_info,
59 [board_82599] = &ixgbe_82599_info,
62 /* ixgbe_pci_tbl - PCI Device ID Table
64 * Wildcard entries (PCI_ANY_ID) should come last
65 * Last entry must be all 0s
67 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
68 * Class, Class Mask, private data (not used) }
70 static struct pci_device_id ixgbe_pci_tbl[] = {
71 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598),
73 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT),
75 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT),
77 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT),
79 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2),
81 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4),
83 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT),
85 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT),
87 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM),
89 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR),
91 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM),
93 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX),
95 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4),
97 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM),
99 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP),
101 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM),
103 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ),
105 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4),
107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE),
110 /* required last entry */
113 MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl);
115 #ifdef CONFIG_IXGBE_DCA
116 static int ixgbe_notify_dca(struct notifier_block *, unsigned long event,
118 static struct notifier_block dca_notifier = {
119 .notifier_call = ixgbe_notify_dca,
125 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
126 MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
127 MODULE_LICENSE("GPL");
128 MODULE_VERSION(DRV_VERSION);
130 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
132 static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter)
136 /* Let firmware take over control of h/w */
137 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
138 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
139 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
142 static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter)
146 /* Let firmware know the driver has taken over */
147 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
148 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
149 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
153 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
154 * @adapter: pointer to adapter struct
155 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
156 * @queue: queue to map the corresponding interrupt to
157 * @msix_vector: the vector to map to the corresponding queue
160 static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction,
161 u8 queue, u8 msix_vector)
164 struct ixgbe_hw *hw = &adapter->hw;
165 switch (hw->mac.type) {
166 case ixgbe_mac_82598EB:
167 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
170 index = (((direction * 64) + queue) >> 2) & 0x1F;
171 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
172 ivar &= ~(0xFF << (8 * (queue & 0x3)));
173 ivar |= (msix_vector << (8 * (queue & 0x3)));
174 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
176 case ixgbe_mac_82599EB:
177 if (direction == -1) {
179 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
180 index = ((queue & 1) * 8);
181 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC);
182 ivar &= ~(0xFF << index);
183 ivar |= (msix_vector << index);
184 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar);
187 /* tx or rx causes */
188 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
189 index = ((16 * (queue & 1)) + (8 * direction));
190 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1));
191 ivar &= ~(0xFF << index);
192 ivar |= (msix_vector << index);
193 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar);
201 static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter,
206 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
207 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
208 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask);
210 mask = (qmask & 0xFFFFFFFF);
211 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask);
212 mask = (qmask >> 32);
213 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask);
217 static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter,
218 struct ixgbe_tx_buffer
221 tx_buffer_info->dma = 0;
222 if (tx_buffer_info->skb) {
223 skb_dma_unmap(&adapter->pdev->dev, tx_buffer_info->skb,
225 dev_kfree_skb_any(tx_buffer_info->skb);
226 tx_buffer_info->skb = NULL;
228 tx_buffer_info->time_stamp = 0;
229 /* tx_buffer_info must be completely set up in the transmit path */
233 * ixgbe_tx_is_paused - check if the tx ring is paused
234 * @adapter: the ixgbe adapter
235 * @tx_ring: the corresponding tx_ring
237 * If not in DCB mode, checks TFCS.TXOFF, otherwise, find out the
238 * corresponding TC of this tx_ring when checking TFCS.
240 * Returns : true if paused
242 static inline bool ixgbe_tx_is_paused(struct ixgbe_adapter *adapter,
243 struct ixgbe_ring *tx_ring)
246 u32 txoff = IXGBE_TFCS_TXOFF;
248 #ifdef CONFIG_IXGBE_DCB
249 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
250 int reg_idx = tx_ring->reg_idx;
251 int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
253 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
255 txoff = IXGBE_TFCS_TXOFF0;
256 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
258 txoff = IXGBE_TFCS_TXOFF;
262 if (tc == 2) /* TC2, TC3 */
263 tc += (reg_idx - 64) >> 4;
264 else if (tc == 3) /* TC4, TC5, TC6, TC7 */
265 tc += 1 + ((reg_idx - 96) >> 3);
266 } else if (dcb_i == 4) {
270 tc += (reg_idx - 64) >> 5;
271 if (tc == 2) /* TC2, TC3 */
272 tc += (reg_idx - 96) >> 4;
279 return IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & txoff;
282 static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter,
283 struct ixgbe_ring *tx_ring,
286 struct ixgbe_hw *hw = &adapter->hw;
288 /* Detect a transmit hang in hardware, this serializes the
289 * check with the clearing of time_stamp and movement of eop */
290 adapter->detect_tx_hung = false;
291 if (tx_ring->tx_buffer_info[eop].time_stamp &&
292 time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) &&
293 !ixgbe_tx_is_paused(adapter, tx_ring)) {
294 /* detected Tx unit hang */
295 union ixgbe_adv_tx_desc *tx_desc;
296 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
297 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
299 " TDH, TDT <%x>, <%x>\n"
300 " next_to_use <%x>\n"
301 " next_to_clean <%x>\n"
302 "tx_buffer_info[next_to_clean]\n"
303 " time_stamp <%lx>\n"
305 tx_ring->queue_index,
306 IXGBE_READ_REG(hw, tx_ring->head),
307 IXGBE_READ_REG(hw, tx_ring->tail),
308 tx_ring->next_to_use, eop,
309 tx_ring->tx_buffer_info[eop].time_stamp, jiffies);
316 #define IXGBE_MAX_TXD_PWR 14
317 #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
319 /* Tx Descriptors needed, worst case */
320 #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
321 (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
322 #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
323 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
325 static void ixgbe_tx_timeout(struct net_device *netdev);
328 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
329 * @q_vector: structure containing interrupt and ring information
330 * @tx_ring: tx ring to clean
332 static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
333 struct ixgbe_ring *tx_ring)
335 struct ixgbe_adapter *adapter = q_vector->adapter;
336 struct net_device *netdev = adapter->netdev;
337 union ixgbe_adv_tx_desc *tx_desc, *eop_desc;
338 struct ixgbe_tx_buffer *tx_buffer_info;
339 unsigned int i, eop, count = 0;
340 unsigned int total_bytes = 0, total_packets = 0;
342 i = tx_ring->next_to_clean;
343 eop = tx_ring->tx_buffer_info[i].next_to_watch;
344 eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
346 while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) &&
347 (count < tx_ring->work_limit)) {
348 bool cleaned = false;
349 for ( ; !cleaned; count++) {
351 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
352 tx_buffer_info = &tx_ring->tx_buffer_info[i];
353 cleaned = (i == eop);
354 skb = tx_buffer_info->skb;
356 if (cleaned && skb) {
357 unsigned int segs, bytecount;
358 unsigned int hlen = skb_headlen(skb);
360 /* gso_segs is currently only valid for tcp */
361 segs = skb_shinfo(skb)->gso_segs ?: 1;
363 /* adjust for FCoE Sequence Offload */
364 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
365 && (skb->protocol == htons(ETH_P_FCOE)) &&
367 hlen = skb_transport_offset(skb) +
368 sizeof(struct fc_frame_header) +
369 sizeof(struct fcoe_crc_eof);
370 segs = DIV_ROUND_UP(skb->len - hlen,
371 skb_shinfo(skb)->gso_size);
373 #endif /* IXGBE_FCOE */
374 /* multiply data chunks by size of headers */
375 bytecount = ((segs - 1) * hlen) + skb->len;
376 total_packets += segs;
377 total_bytes += bytecount;
380 ixgbe_unmap_and_free_tx_resource(adapter,
383 tx_desc->wb.status = 0;
386 if (i == tx_ring->count)
390 eop = tx_ring->tx_buffer_info[i].next_to_watch;
391 eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
394 tx_ring->next_to_clean = i;
396 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
397 if (unlikely(count && netif_carrier_ok(netdev) &&
398 (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
399 /* Make sure that anybody stopping the queue after this
400 * sees the new next_to_clean.
403 if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) &&
404 !test_bit(__IXGBE_DOWN, &adapter->state)) {
405 netif_wake_subqueue(netdev, tx_ring->queue_index);
406 ++adapter->restart_queue;
410 if (adapter->detect_tx_hung) {
411 if (ixgbe_check_tx_hang(adapter, tx_ring, i)) {
412 /* schedule immediate reset if we believe we hung */
414 "tx hang %d detected, resetting adapter\n",
415 adapter->tx_timeout_count + 1);
416 ixgbe_tx_timeout(adapter->netdev);
420 /* re-arm the interrupt */
421 if (count >= tx_ring->work_limit)
422 ixgbe_irq_rearm_queues(adapter, ((u64)1 << q_vector->v_idx));
424 tx_ring->total_bytes += total_bytes;
425 tx_ring->total_packets += total_packets;
426 tx_ring->stats.packets += total_packets;
427 tx_ring->stats.bytes += total_bytes;
428 netdev->stats.tx_bytes += total_bytes;
429 netdev->stats.tx_packets += total_packets;
430 return (count < tx_ring->work_limit);
433 #ifdef CONFIG_IXGBE_DCA
434 static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter,
435 struct ixgbe_ring *rx_ring)
439 int q = rx_ring - adapter->rx_ring;
441 if (rx_ring->cpu != cpu) {
442 rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q));
443 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
444 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK;
445 rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
446 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
447 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK_82599;
448 rxctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
449 IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599);
451 rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN;
452 rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN;
453 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN);
454 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_WRO_EN |
455 IXGBE_DCA_RXCTRL_DESC_HSRO_EN);
456 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q), rxctrl);
462 static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
463 struct ixgbe_ring *tx_ring)
467 int q = tx_ring - adapter->tx_ring;
468 struct ixgbe_hw *hw = &adapter->hw;
470 if (tx_ring->cpu != cpu) {
471 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
472 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(q));
473 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK;
474 txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
475 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
476 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(q), txctrl);
477 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
478 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(q));
479 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599;
480 txctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
481 IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599);
482 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
483 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(q), txctrl);
490 static void ixgbe_setup_dca(struct ixgbe_adapter *adapter)
494 if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED))
497 /* always use CB2 mode, difference is masked in the CB driver */
498 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2);
500 for (i = 0; i < adapter->num_tx_queues; i++) {
501 adapter->tx_ring[i].cpu = -1;
502 ixgbe_update_tx_dca(adapter, &adapter->tx_ring[i]);
504 for (i = 0; i < adapter->num_rx_queues; i++) {
505 adapter->rx_ring[i].cpu = -1;
506 ixgbe_update_rx_dca(adapter, &adapter->rx_ring[i]);
510 static int __ixgbe_notify_dca(struct device *dev, void *data)
512 struct net_device *netdev = dev_get_drvdata(dev);
513 struct ixgbe_adapter *adapter = netdev_priv(netdev);
514 unsigned long event = *(unsigned long *)data;
517 case DCA_PROVIDER_ADD:
518 /* if we're already enabled, don't do it again */
519 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
521 if (dca_add_requester(dev) == 0) {
522 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
523 ixgbe_setup_dca(adapter);
526 /* Fall Through since DCA is disabled. */
527 case DCA_PROVIDER_REMOVE:
528 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
529 dca_remove_requester(dev);
530 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
531 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
539 #endif /* CONFIG_IXGBE_DCA */
541 * ixgbe_receive_skb - Send a completed packet up the stack
542 * @adapter: board private structure
543 * @skb: packet to send up
544 * @status: hardware indication of status of receive
545 * @rx_ring: rx descriptor ring (for a specific queue) to setup
546 * @rx_desc: rx descriptor
548 static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector,
549 struct sk_buff *skb, u8 status,
550 struct ixgbe_ring *ring,
551 union ixgbe_adv_rx_desc *rx_desc)
553 struct ixgbe_adapter *adapter = q_vector->adapter;
554 struct napi_struct *napi = &q_vector->napi;
555 bool is_vlan = (status & IXGBE_RXD_STAT_VP);
556 u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
558 skb_record_rx_queue(skb, ring->queue_index);
559 if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) {
560 if (adapter->vlgrp && is_vlan && (tag & VLAN_VID_MASK))
561 vlan_gro_receive(napi, adapter->vlgrp, tag, skb);
563 napi_gro_receive(napi, skb);
565 if (adapter->vlgrp && is_vlan && (tag & VLAN_VID_MASK))
566 vlan_hwaccel_rx(skb, adapter->vlgrp, tag);
573 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
574 * @adapter: address of board private structure
575 * @status_err: hardware indication of status of receive
576 * @skb: skb currently being received and modified
578 static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter,
579 union ixgbe_adv_rx_desc *rx_desc,
582 u32 status_err = le32_to_cpu(rx_desc->wb.upper.status_error);
584 skb->ip_summed = CHECKSUM_NONE;
586 /* Rx csum disabled */
587 if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
590 /* if IP and error */
591 if ((status_err & IXGBE_RXD_STAT_IPCS) &&
592 (status_err & IXGBE_RXDADV_ERR_IPE)) {
593 adapter->hw_csum_rx_error++;
597 if (!(status_err & IXGBE_RXD_STAT_L4CS))
600 if (status_err & IXGBE_RXDADV_ERR_TCPE) {
601 u16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
604 * 82599 errata, UDP frames with a 0 checksum can be marked as
607 if ((pkt_info & IXGBE_RXDADV_PKTTYPE_UDP) &&
608 (adapter->hw.mac.type == ixgbe_mac_82599EB))
611 adapter->hw_csum_rx_error++;
615 /* It must be a TCP or UDP packet with a valid checksum */
616 skb->ip_summed = CHECKSUM_UNNECESSARY;
617 adapter->hw_csum_rx_good++;
620 static inline void ixgbe_release_rx_desc(struct ixgbe_hw *hw,
621 struct ixgbe_ring *rx_ring, u32 val)
624 * Force memory writes to complete before letting h/w
625 * know there are new descriptors to fetch. (Only
626 * applicable for weak-ordered memory model archs,
630 IXGBE_WRITE_REG(hw, IXGBE_RDT(rx_ring->reg_idx), val);
634 * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split
635 * @adapter: address of board private structure
637 static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter,
638 struct ixgbe_ring *rx_ring,
641 struct pci_dev *pdev = adapter->pdev;
642 union ixgbe_adv_rx_desc *rx_desc;
643 struct ixgbe_rx_buffer *bi;
646 i = rx_ring->next_to_use;
647 bi = &rx_ring->rx_buffer_info[i];
649 while (cleaned_count--) {
650 rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
653 (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED)) {
655 bi->page = alloc_page(GFP_ATOMIC);
657 adapter->alloc_rx_page_failed++;
662 /* use a half page if we're re-using */
663 bi->page_offset ^= (PAGE_SIZE / 2);
666 bi->page_dma = pci_map_page(pdev, bi->page,
674 skb = netdev_alloc_skb_ip_align(adapter->netdev,
675 rx_ring->rx_buf_len);
678 adapter->alloc_rx_buff_failed++;
683 bi->dma = pci_map_single(pdev, skb->data,
687 /* Refresh the desc even if buffer_addrs didn't change because
688 * each write-back erases this info. */
689 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
690 rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
691 rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
693 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
697 if (i == rx_ring->count)
699 bi = &rx_ring->rx_buffer_info[i];
703 if (rx_ring->next_to_use != i) {
704 rx_ring->next_to_use = i;
706 i = (rx_ring->count - 1);
708 ixgbe_release_rx_desc(&adapter->hw, rx_ring, i);
712 static inline u16 ixgbe_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc)
714 return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info;
717 static inline u16 ixgbe_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc)
719 return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
722 static inline u32 ixgbe_get_rsc_count(union ixgbe_adv_rx_desc *rx_desc)
724 return (le32_to_cpu(rx_desc->wb.lower.lo_dword.data) &
725 IXGBE_RXDADV_RSCCNT_MASK) >>
726 IXGBE_RXDADV_RSCCNT_SHIFT;
730 * ixgbe_transform_rsc_queue - change rsc queue into a full packet
731 * @skb: pointer to the last skb in the rsc queue
733 * This function changes a queue full of hw rsc buffers into a completed
734 * packet. It uses the ->prev pointers to find the first packet and then
735 * turns it into the frag list owner.
737 static inline struct sk_buff *ixgbe_transform_rsc_queue(struct sk_buff *skb)
739 unsigned int frag_list_size = 0;
742 struct sk_buff *prev = skb->prev;
743 frag_list_size += skb->len;
748 skb_shinfo(skb)->frag_list = skb->next;
750 skb->len += frag_list_size;
751 skb->data_len += frag_list_size;
752 skb->truesize += frag_list_size;
756 static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
757 struct ixgbe_ring *rx_ring,
758 int *work_done, int work_to_do)
760 struct ixgbe_adapter *adapter = q_vector->adapter;
761 struct net_device *netdev = adapter->netdev;
762 struct pci_dev *pdev = adapter->pdev;
763 union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
764 struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer;
766 unsigned int i, rsc_count = 0;
769 bool cleaned = false;
770 int cleaned_count = 0;
771 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
774 #endif /* IXGBE_FCOE */
776 i = rx_ring->next_to_clean;
777 rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
778 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
779 rx_buffer_info = &rx_ring->rx_buffer_info[i];
781 while (staterr & IXGBE_RXD_STAT_DD) {
783 if (*work_done >= work_to_do)
787 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
788 hdr_info = le16_to_cpu(ixgbe_get_hdr_info(rx_desc));
789 len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
790 IXGBE_RXDADV_HDRBUFLEN_SHIFT;
791 if (hdr_info & IXGBE_RXDADV_SPH)
792 adapter->rx_hdr_split++;
793 if (len > IXGBE_RX_HDR_SIZE)
794 len = IXGBE_RX_HDR_SIZE;
795 upper_len = le16_to_cpu(rx_desc->wb.upper.length);
797 len = le16_to_cpu(rx_desc->wb.upper.length);
801 skb = rx_buffer_info->skb;
802 prefetch(skb->data - NET_IP_ALIGN);
803 rx_buffer_info->skb = NULL;
805 if (rx_buffer_info->dma) {
806 pci_unmap_single(pdev, rx_buffer_info->dma,
809 rx_buffer_info->dma = 0;
814 pci_unmap_page(pdev, rx_buffer_info->page_dma,
815 PAGE_SIZE / 2, PCI_DMA_FROMDEVICE);
816 rx_buffer_info->page_dma = 0;
817 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
818 rx_buffer_info->page,
819 rx_buffer_info->page_offset,
822 if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) ||
823 (page_count(rx_buffer_info->page) != 1))
824 rx_buffer_info->page = NULL;
826 get_page(rx_buffer_info->page);
828 skb->len += upper_len;
829 skb->data_len += upper_len;
830 skb->truesize += upper_len;
834 if (i == rx_ring->count)
837 next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i);
841 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)
842 rsc_count = ixgbe_get_rsc_count(rx_desc);
845 u32 nextp = (staterr & IXGBE_RXDADV_NEXTP_MASK) >>
846 IXGBE_RXDADV_NEXTP_SHIFT;
847 next_buffer = &rx_ring->rx_buffer_info[nextp];
848 rx_ring->rsc_count += (rsc_count - 1);
850 next_buffer = &rx_ring->rx_buffer_info[i];
853 if (staterr & IXGBE_RXD_STAT_EOP) {
855 skb = ixgbe_transform_rsc_queue(skb);
856 rx_ring->stats.packets++;
857 rx_ring->stats.bytes += skb->len;
859 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
860 rx_buffer_info->skb = next_buffer->skb;
861 rx_buffer_info->dma = next_buffer->dma;
862 next_buffer->skb = skb;
863 next_buffer->dma = 0;
865 skb->next = next_buffer->skb;
866 skb->next->prev = skb;
868 adapter->non_eop_descs++;
872 if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) {
873 dev_kfree_skb_irq(skb);
877 ixgbe_rx_checksum(adapter, rx_desc, skb);
879 /* probably a little skewed due to removing CRC */
880 total_rx_bytes += skb->len;
883 skb->protocol = eth_type_trans(skb, adapter->netdev);
885 /* if ddp, not passing to ULD unless for FCP_RSP or error */
886 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
887 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb);
891 #endif /* IXGBE_FCOE */
892 ixgbe_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
895 rx_desc->wb.upper.status_error = 0;
897 /* return some buffers to hardware, one at a time is too slow */
898 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) {
899 ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
903 /* use prefetched values */
905 rx_buffer_info = &rx_ring->rx_buffer_info[i];
907 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
910 rx_ring->next_to_clean = i;
911 cleaned_count = IXGBE_DESC_UNUSED(rx_ring);
914 ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
917 /* include DDPed FCoE data */
921 mss = adapter->netdev->mtu - sizeof(struct fcoe_hdr) -
922 sizeof(struct fc_frame_header) -
923 sizeof(struct fcoe_crc_eof);
926 total_rx_bytes += ddp_bytes;
927 total_rx_packets += DIV_ROUND_UP(ddp_bytes, mss);
929 #endif /* IXGBE_FCOE */
931 rx_ring->total_packets += total_rx_packets;
932 rx_ring->total_bytes += total_rx_bytes;
933 netdev->stats.rx_bytes += total_rx_bytes;
934 netdev->stats.rx_packets += total_rx_packets;
939 static int ixgbe_clean_rxonly(struct napi_struct *, int);
941 * ixgbe_configure_msix - Configure MSI-X hardware
942 * @adapter: board private structure
944 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
947 static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
949 struct ixgbe_q_vector *q_vector;
950 int i, j, q_vectors, v_idx, r_idx;
953 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
956 * Populate the IVAR table and set the ITR values to the
957 * corresponding register.
959 for (v_idx = 0; v_idx < q_vectors; v_idx++) {
960 q_vector = adapter->q_vector[v_idx];
961 /* XXX for_each_bit(...) */
962 r_idx = find_first_bit(q_vector->rxr_idx,
963 adapter->num_rx_queues);
965 for (i = 0; i < q_vector->rxr_count; i++) {
966 j = adapter->rx_ring[r_idx].reg_idx;
967 ixgbe_set_ivar(adapter, 0, j, v_idx);
968 r_idx = find_next_bit(q_vector->rxr_idx,
969 adapter->num_rx_queues,
972 r_idx = find_first_bit(q_vector->txr_idx,
973 adapter->num_tx_queues);
975 for (i = 0; i < q_vector->txr_count; i++) {
976 j = adapter->tx_ring[r_idx].reg_idx;
977 ixgbe_set_ivar(adapter, 1, j, v_idx);
978 r_idx = find_next_bit(q_vector->txr_idx,
979 adapter->num_tx_queues,
983 if (q_vector->txr_count && !q_vector->rxr_count)
985 q_vector->eitr = adapter->tx_eitr_param;
986 else if (q_vector->rxr_count)
988 q_vector->eitr = adapter->rx_eitr_param;
990 ixgbe_write_eitr(q_vector);
993 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
994 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX,
996 else if (adapter->hw.mac.type == ixgbe_mac_82599EB)
997 ixgbe_set_ivar(adapter, -1, 1, v_idx);
998 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
1000 /* set up to autoclear timer, and the vectors */
1001 mask = IXGBE_EIMS_ENABLE_MASK;
1002 mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC);
1003 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask);
1006 enum latency_range {
1010 latency_invalid = 255
1014 * ixgbe_update_itr - update the dynamic ITR value based on statistics
1015 * @adapter: pointer to adapter
1016 * @eitr: eitr setting (ints per sec) to give last timeslice
1017 * @itr_setting: current throttle rate in ints/second
1018 * @packets: the number of packets during this measurement interval
1019 * @bytes: the number of bytes during this measurement interval
1021 * Stores a new ITR value based on packets and byte
1022 * counts during the last interrupt. The advantage of per interrupt
1023 * computation is faster updates and more accurate ITR for the current
1024 * traffic pattern. Constants in this function were computed
1025 * based on theoretical maximum wire speed and thresholds were set based
1026 * on testing data as well as attempting to minimize response time
1027 * while increasing bulk throughput.
1028 * this functionality is controlled by the InterruptThrottleRate module
1029 * parameter (see ixgbe_param.c)
1031 static u8 ixgbe_update_itr(struct ixgbe_adapter *adapter,
1032 u32 eitr, u8 itr_setting,
1033 int packets, int bytes)
1035 unsigned int retval = itr_setting;
1040 goto update_itr_done;
1043 /* simple throttlerate management
1044 * 0-20MB/s lowest (100000 ints/s)
1045 * 20-100MB/s low (20000 ints/s)
1046 * 100-1249MB/s bulk (8000 ints/s)
1048 /* what was last interrupt timeslice? */
1049 timepassed_us = 1000000/eitr;
1050 bytes_perint = bytes / timepassed_us; /* bytes/usec */
1052 switch (itr_setting) {
1053 case lowest_latency:
1054 if (bytes_perint > adapter->eitr_low)
1055 retval = low_latency;
1058 if (bytes_perint > adapter->eitr_high)
1059 retval = bulk_latency;
1060 else if (bytes_perint <= adapter->eitr_low)
1061 retval = lowest_latency;
1064 if (bytes_perint <= adapter->eitr_high)
1065 retval = low_latency;
1074 * ixgbe_write_eitr - write EITR register in hardware specific way
1075 * @q_vector: structure containing interrupt and ring information
1077 * This function is made to be called by ethtool and by the driver
1078 * when it needs to update EITR registers at runtime. Hardware
1079 * specific quirks/differences are taken care of here.
1081 void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector)
1083 struct ixgbe_adapter *adapter = q_vector->adapter;
1084 struct ixgbe_hw *hw = &adapter->hw;
1085 int v_idx = q_vector->v_idx;
1086 u32 itr_reg = EITR_INTS_PER_SEC_TO_REG(q_vector->eitr);
1088 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1089 /* must write high and low 16 bits to reset counter */
1090 itr_reg |= (itr_reg << 16);
1091 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
1093 * set the WDIS bit to not clear the timer bits and cause an
1094 * immediate assertion of the interrupt
1096 itr_reg |= IXGBE_EITR_CNT_WDIS;
1098 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg);
1101 static void ixgbe_set_itr_msix(struct ixgbe_q_vector *q_vector)
1103 struct ixgbe_adapter *adapter = q_vector->adapter;
1105 u8 current_itr, ret_itr;
1107 struct ixgbe_ring *rx_ring, *tx_ring;
1109 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1110 for (i = 0; i < q_vector->txr_count; i++) {
1111 tx_ring = &(adapter->tx_ring[r_idx]);
1112 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
1114 tx_ring->total_packets,
1115 tx_ring->total_bytes);
1116 /* if the result for this queue would decrease interrupt
1117 * rate for this vector then use that result */
1118 q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ?
1119 q_vector->tx_itr - 1 : ret_itr);
1120 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
1124 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1125 for (i = 0; i < q_vector->rxr_count; i++) {
1126 rx_ring = &(adapter->rx_ring[r_idx]);
1127 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
1129 rx_ring->total_packets,
1130 rx_ring->total_bytes);
1131 /* if the result for this queue would decrease interrupt
1132 * rate for this vector then use that result */
1133 q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ?
1134 q_vector->rx_itr - 1 : ret_itr);
1135 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1139 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
1141 switch (current_itr) {
1142 /* counts and packets in update_itr are dependent on these numbers */
1143 case lowest_latency:
1147 new_itr = 20000; /* aka hwitr = ~200 */
1155 if (new_itr != q_vector->eitr) {
1156 /* do an exponential smoothing */
1157 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
1159 /* save the algorithm value here, not the smoothed one */
1160 q_vector->eitr = new_itr;
1162 ixgbe_write_eitr(q_vector);
1168 static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
1170 struct ixgbe_hw *hw = &adapter->hw;
1172 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) &&
1173 (eicr & IXGBE_EICR_GPI_SDP1)) {
1174 DPRINTK(PROBE, CRIT, "Fan has stopped, replace the adapter\n");
1175 /* write to clear the interrupt */
1176 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
1180 static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr)
1182 struct ixgbe_hw *hw = &adapter->hw;
1184 if (eicr & IXGBE_EICR_GPI_SDP1) {
1185 /* Clear the interrupt */
1186 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
1187 schedule_work(&adapter->multispeed_fiber_task);
1188 } else if (eicr & IXGBE_EICR_GPI_SDP2) {
1189 /* Clear the interrupt */
1190 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP2);
1191 schedule_work(&adapter->sfp_config_module_task);
1193 /* Interrupt isn't for us... */
1198 static void ixgbe_check_lsc(struct ixgbe_adapter *adapter)
1200 struct ixgbe_hw *hw = &adapter->hw;
1203 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
1204 adapter->link_check_timeout = jiffies;
1205 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
1206 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC);
1207 schedule_work(&adapter->watchdog_task);
1211 static irqreturn_t ixgbe_msix_lsc(int irq, void *data)
1213 struct net_device *netdev = data;
1214 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1215 struct ixgbe_hw *hw = &adapter->hw;
1219 * Workaround for Silicon errata. Use clear-by-write instead
1220 * of clear-by-read. Reading with EICS will return the
1221 * interrupt causes without clearing, which later be done
1222 * with the write to EICR.
1224 eicr = IXGBE_READ_REG(hw, IXGBE_EICS);
1225 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr);
1227 if (eicr & IXGBE_EICR_LSC)
1228 ixgbe_check_lsc(adapter);
1230 if (hw->mac.type == ixgbe_mac_82598EB)
1231 ixgbe_check_fan_failure(adapter, eicr);
1233 if (hw->mac.type == ixgbe_mac_82599EB) {
1234 ixgbe_check_sfp_event(adapter, eicr);
1236 /* Handle Flow Director Full threshold interrupt */
1237 if (eicr & IXGBE_EICR_FLOW_DIR) {
1239 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_FLOW_DIR);
1240 /* Disable transmits before FDIR Re-initialization */
1241 netif_tx_stop_all_queues(netdev);
1242 for (i = 0; i < adapter->num_tx_queues; i++) {
1243 struct ixgbe_ring *tx_ring =
1244 &adapter->tx_ring[i];
1245 if (test_and_clear_bit(__IXGBE_FDIR_INIT_DONE,
1246 &tx_ring->reinit_state))
1247 schedule_work(&adapter->fdir_reinit_task);
1251 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1252 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER);
1257 static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter,
1262 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1263 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
1264 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
1266 mask = (qmask & 0xFFFFFFFF);
1267 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(0), mask);
1268 mask = (qmask >> 32);
1269 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(1), mask);
1271 /* skip the flush */
1274 static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter,
1279 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1280 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
1281 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, mask);
1283 mask = (qmask & 0xFFFFFFFF);
1284 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), mask);
1285 mask = (qmask >> 32);
1286 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), mask);
1288 /* skip the flush */
1291 static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data)
1293 struct ixgbe_q_vector *q_vector = data;
1294 struct ixgbe_adapter *adapter = q_vector->adapter;
1295 struct ixgbe_ring *tx_ring;
1298 if (!q_vector->txr_count)
1301 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1302 for (i = 0; i < q_vector->txr_count; i++) {
1303 tx_ring = &(adapter->tx_ring[r_idx]);
1304 tx_ring->total_bytes = 0;
1305 tx_ring->total_packets = 0;
1306 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
1310 /* disable interrupts on this vector only */
1311 ixgbe_irq_disable_queues(adapter, ((u64)1 << q_vector->v_idx));
1312 napi_schedule(&q_vector->napi);
1318 * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
1320 * @data: pointer to our q_vector struct for this interrupt vector
1322 static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data)
1324 struct ixgbe_q_vector *q_vector = data;
1325 struct ixgbe_adapter *adapter = q_vector->adapter;
1326 struct ixgbe_ring *rx_ring;
1330 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1331 for (i = 0; i < q_vector->rxr_count; i++) {
1332 rx_ring = &(adapter->rx_ring[r_idx]);
1333 rx_ring->total_bytes = 0;
1334 rx_ring->total_packets = 0;
1335 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1339 if (!q_vector->rxr_count)
1342 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1343 rx_ring = &(adapter->rx_ring[r_idx]);
1344 /* disable interrupts on this vector only */
1345 ixgbe_irq_disable_queues(adapter, ((u64)1 << q_vector->v_idx));
1346 napi_schedule(&q_vector->napi);
1351 static irqreturn_t ixgbe_msix_clean_many(int irq, void *data)
1353 struct ixgbe_q_vector *q_vector = data;
1354 struct ixgbe_adapter *adapter = q_vector->adapter;
1355 struct ixgbe_ring *ring;
1359 if (!q_vector->txr_count && !q_vector->rxr_count)
1362 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1363 for (i = 0; i < q_vector->txr_count; i++) {
1364 ring = &(adapter->tx_ring[r_idx]);
1365 ring->total_bytes = 0;
1366 ring->total_packets = 0;
1367 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
1371 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1372 for (i = 0; i < q_vector->rxr_count; i++) {
1373 ring = &(adapter->rx_ring[r_idx]);
1374 ring->total_bytes = 0;
1375 ring->total_packets = 0;
1376 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1380 /* disable interrupts on this vector only */
1381 ixgbe_irq_disable_queues(adapter, ((u64)1 << q_vector->v_idx));
1382 napi_schedule(&q_vector->napi);
1388 * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine
1389 * @napi: napi struct with our devices info in it
1390 * @budget: amount of work driver is allowed to do this pass, in packets
1392 * This function is optimized for cleaning one queue only on a single
1395 static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget)
1397 struct ixgbe_q_vector *q_vector =
1398 container_of(napi, struct ixgbe_q_vector, napi);
1399 struct ixgbe_adapter *adapter = q_vector->adapter;
1400 struct ixgbe_ring *rx_ring = NULL;
1404 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1405 rx_ring = &(adapter->rx_ring[r_idx]);
1406 #ifdef CONFIG_IXGBE_DCA
1407 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1408 ixgbe_update_rx_dca(adapter, rx_ring);
1411 ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
1413 /* If all Rx work done, exit the polling mode */
1414 if (work_done < budget) {
1415 napi_complete(napi);
1416 if (adapter->rx_itr_setting & 1)
1417 ixgbe_set_itr_msix(q_vector);
1418 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1419 ixgbe_irq_enable_queues(adapter,
1420 ((u64)1 << q_vector->v_idx));
1427 * ixgbe_clean_rxtx_many - msix (aka one shot) rx clean routine
1428 * @napi: napi struct with our devices info in it
1429 * @budget: amount of work driver is allowed to do this pass, in packets
1431 * This function will clean more than one rx queue associated with a
1434 static int ixgbe_clean_rxtx_many(struct napi_struct *napi, int budget)
1436 struct ixgbe_q_vector *q_vector =
1437 container_of(napi, struct ixgbe_q_vector, napi);
1438 struct ixgbe_adapter *adapter = q_vector->adapter;
1439 struct ixgbe_ring *ring = NULL;
1440 int work_done = 0, i;
1442 bool tx_clean_complete = true;
1444 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1445 for (i = 0; i < q_vector->txr_count; i++) {
1446 ring = &(adapter->tx_ring[r_idx]);
1447 #ifdef CONFIG_IXGBE_DCA
1448 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1449 ixgbe_update_tx_dca(adapter, ring);
1451 tx_clean_complete &= ixgbe_clean_tx_irq(q_vector, ring);
1452 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
1456 /* attempt to distribute budget to each queue fairly, but don't allow
1457 * the budget to go below 1 because we'll exit polling */
1458 budget /= (q_vector->rxr_count ?: 1);
1459 budget = max(budget, 1);
1460 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1461 for (i = 0; i < q_vector->rxr_count; i++) {
1462 ring = &(adapter->rx_ring[r_idx]);
1463 #ifdef CONFIG_IXGBE_DCA
1464 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1465 ixgbe_update_rx_dca(adapter, ring);
1467 ixgbe_clean_rx_irq(q_vector, ring, &work_done, budget);
1468 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1472 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1473 ring = &(adapter->rx_ring[r_idx]);
1474 /* If all Rx work done, exit the polling mode */
1475 if (work_done < budget) {
1476 napi_complete(napi);
1477 if (adapter->rx_itr_setting & 1)
1478 ixgbe_set_itr_msix(q_vector);
1479 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1480 ixgbe_irq_enable_queues(adapter,
1481 ((u64)1 << q_vector->v_idx));
1489 * ixgbe_clean_txonly - msix (aka one shot) tx clean routine
1490 * @napi: napi struct with our devices info in it
1491 * @budget: amount of work driver is allowed to do this pass, in packets
1493 * This function is optimized for cleaning one queue only on a single
1496 static int ixgbe_clean_txonly(struct napi_struct *napi, int budget)
1498 struct ixgbe_q_vector *q_vector =
1499 container_of(napi, struct ixgbe_q_vector, napi);
1500 struct ixgbe_adapter *adapter = q_vector->adapter;
1501 struct ixgbe_ring *tx_ring = NULL;
1505 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1506 tx_ring = &(adapter->tx_ring[r_idx]);
1507 #ifdef CONFIG_IXGBE_DCA
1508 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1509 ixgbe_update_tx_dca(adapter, tx_ring);
1512 if (!ixgbe_clean_tx_irq(q_vector, tx_ring))
1515 /* If all Tx work done, exit the polling mode */
1516 if (work_done < budget) {
1517 napi_complete(napi);
1518 if (adapter->tx_itr_setting & 1)
1519 ixgbe_set_itr_msix(q_vector);
1520 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1521 ixgbe_irq_enable_queues(adapter, ((u64)1 << q_vector->v_idx));
1527 static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx,
1530 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
1532 set_bit(r_idx, q_vector->rxr_idx);
1533 q_vector->rxr_count++;
1536 static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx,
1539 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
1541 set_bit(t_idx, q_vector->txr_idx);
1542 q_vector->txr_count++;
1546 * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors
1547 * @adapter: board private structure to initialize
1548 * @vectors: allotted vector count for descriptor rings
1550 * This function maps descriptor rings to the queue-specific vectors
1551 * we were allotted through the MSI-X enabling code. Ideally, we'd have
1552 * one vector per ring/queue, but on a constrained vector budget, we
1553 * group the rings as "efficiently" as possible. You would add new
1554 * mapping configurations in here.
1556 static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter,
1560 int rxr_idx = 0, txr_idx = 0;
1561 int rxr_remaining = adapter->num_rx_queues;
1562 int txr_remaining = adapter->num_tx_queues;
1567 /* No mapping required if MSI-X is disabled. */
1568 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
1572 * The ideal configuration...
1573 * We have enough vectors to map one per queue.
1575 if (vectors == adapter->num_rx_queues + adapter->num_tx_queues) {
1576 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
1577 map_vector_to_rxq(adapter, v_start, rxr_idx);
1579 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
1580 map_vector_to_txq(adapter, v_start, txr_idx);
1586 * If we don't have enough vectors for a 1-to-1
1587 * mapping, we'll have to group them so there are
1588 * multiple queues per vector.
1590 /* Re-adjusting *qpv takes care of the remainder. */
1591 for (i = v_start; i < vectors; i++) {
1592 rqpv = DIV_ROUND_UP(rxr_remaining, vectors - i);
1593 for (j = 0; j < rqpv; j++) {
1594 map_vector_to_rxq(adapter, i, rxr_idx);
1599 for (i = v_start; i < vectors; i++) {
1600 tqpv = DIV_ROUND_UP(txr_remaining, vectors - i);
1601 for (j = 0; j < tqpv; j++) {
1602 map_vector_to_txq(adapter, i, txr_idx);
1613 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
1614 * @adapter: board private structure
1616 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
1617 * interrupts from the kernel.
1619 static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
1621 struct net_device *netdev = adapter->netdev;
1622 irqreturn_t (*handler)(int, void *);
1623 int i, vector, q_vectors, err;
1626 /* Decrement for Other and TCP Timer vectors */
1627 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1629 /* Map the Tx/Rx rings to the vectors we were allotted. */
1630 err = ixgbe_map_rings_to_vectors(adapter, q_vectors);
1634 #define SET_HANDLER(_v) ((!(_v)->rxr_count) ? &ixgbe_msix_clean_tx : \
1635 (!(_v)->txr_count) ? &ixgbe_msix_clean_rx : \
1636 &ixgbe_msix_clean_many)
1637 for (vector = 0; vector < q_vectors; vector++) {
1638 handler = SET_HANDLER(adapter->q_vector[vector]);
1640 if(handler == &ixgbe_msix_clean_rx) {
1641 sprintf(adapter->name[vector], "%s-%s-%d",
1642 netdev->name, "rx", ri++);
1644 else if(handler == &ixgbe_msix_clean_tx) {
1645 sprintf(adapter->name[vector], "%s-%s-%d",
1646 netdev->name, "tx", ti++);
1649 sprintf(adapter->name[vector], "%s-%s-%d",
1650 netdev->name, "TxRx", vector);
1652 err = request_irq(adapter->msix_entries[vector].vector,
1653 handler, 0, adapter->name[vector],
1654 adapter->q_vector[vector]);
1657 "request_irq failed for MSIX interrupt "
1658 "Error: %d\n", err);
1659 goto free_queue_irqs;
1663 sprintf(adapter->name[vector], "%s:lsc", netdev->name);
1664 err = request_irq(adapter->msix_entries[vector].vector,
1665 &ixgbe_msix_lsc, 0, adapter->name[vector], netdev);
1668 "request_irq for msix_lsc failed: %d\n", err);
1669 goto free_queue_irqs;
1675 for (i = vector - 1; i >= 0; i--)
1676 free_irq(adapter->msix_entries[--vector].vector,
1677 adapter->q_vector[i]);
1678 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
1679 pci_disable_msix(adapter->pdev);
1680 kfree(adapter->msix_entries);
1681 adapter->msix_entries = NULL;
1686 static void ixgbe_set_itr(struct ixgbe_adapter *adapter)
1688 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
1690 u32 new_itr = q_vector->eitr;
1691 struct ixgbe_ring *rx_ring = &adapter->rx_ring[0];
1692 struct ixgbe_ring *tx_ring = &adapter->tx_ring[0];
1694 q_vector->tx_itr = ixgbe_update_itr(adapter, new_itr,
1696 tx_ring->total_packets,
1697 tx_ring->total_bytes);
1698 q_vector->rx_itr = ixgbe_update_itr(adapter, new_itr,
1700 rx_ring->total_packets,
1701 rx_ring->total_bytes);
1703 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
1705 switch (current_itr) {
1706 /* counts and packets in update_itr are dependent on these numbers */
1707 case lowest_latency:
1711 new_itr = 20000; /* aka hwitr = ~200 */
1720 if (new_itr != q_vector->eitr) {
1721 /* do an exponential smoothing */
1722 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
1724 /* save the algorithm value here, not the smoothed one */
1725 q_vector->eitr = new_itr;
1727 ixgbe_write_eitr(q_vector);
1734 * ixgbe_irq_enable - Enable default interrupt generation settings
1735 * @adapter: board private structure
1737 static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter)
1741 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
1742 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
1743 mask |= IXGBE_EIMS_GPI_SDP1;
1744 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
1745 mask |= IXGBE_EIMS_ECC;
1746 mask |= IXGBE_EIMS_GPI_SDP1;
1747 mask |= IXGBE_EIMS_GPI_SDP2;
1749 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
1750 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
1751 mask |= IXGBE_EIMS_FLOW_DIR;
1753 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
1754 ixgbe_irq_enable_queues(adapter, ~0);
1755 IXGBE_WRITE_FLUSH(&adapter->hw);
1759 * ixgbe_intr - legacy mode Interrupt Handler
1760 * @irq: interrupt number
1761 * @data: pointer to a network interface device structure
1763 static irqreturn_t ixgbe_intr(int irq, void *data)
1765 struct net_device *netdev = data;
1766 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1767 struct ixgbe_hw *hw = &adapter->hw;
1768 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
1772 * Workaround for silicon errata. Mask the interrupts
1773 * before the read of EICR.
1775 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
1777 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
1778 * therefore no explict interrupt disable is necessary */
1779 eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
1781 /* shared interrupt alert!
1782 * make sure interrupts are enabled because the read will
1783 * have disabled interrupts due to EIAM */
1784 ixgbe_irq_enable(adapter);
1785 return IRQ_NONE; /* Not our interrupt */
1788 if (eicr & IXGBE_EICR_LSC)
1789 ixgbe_check_lsc(adapter);
1791 if (hw->mac.type == ixgbe_mac_82599EB)
1792 ixgbe_check_sfp_event(adapter, eicr);
1794 ixgbe_check_fan_failure(adapter, eicr);
1796 if (napi_schedule_prep(&(q_vector->napi))) {
1797 adapter->tx_ring[0].total_packets = 0;
1798 adapter->tx_ring[0].total_bytes = 0;
1799 adapter->rx_ring[0].total_packets = 0;
1800 adapter->rx_ring[0].total_bytes = 0;
1801 /* would disable interrupts here but EIAM disabled it */
1802 __napi_schedule(&(q_vector->napi));
1808 static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter)
1810 int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1812 for (i = 0; i < q_vectors; i++) {
1813 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
1814 bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES);
1815 bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES);
1816 q_vector->rxr_count = 0;
1817 q_vector->txr_count = 0;
1822 * ixgbe_request_irq - initialize interrupts
1823 * @adapter: board private structure
1825 * Attempts to configure interrupts using the best available
1826 * capabilities of the hardware and kernel.
1828 static int ixgbe_request_irq(struct ixgbe_adapter *adapter)
1830 struct net_device *netdev = adapter->netdev;
1833 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
1834 err = ixgbe_request_msix_irqs(adapter);
1835 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
1836 err = request_irq(adapter->pdev->irq, &ixgbe_intr, 0,
1837 netdev->name, netdev);
1839 err = request_irq(adapter->pdev->irq, &ixgbe_intr, IRQF_SHARED,
1840 netdev->name, netdev);
1844 DPRINTK(PROBE, ERR, "request_irq failed, Error %d\n", err);
1849 static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
1851 struct net_device *netdev = adapter->netdev;
1853 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
1856 q_vectors = adapter->num_msix_vectors;
1859 free_irq(adapter->msix_entries[i].vector, netdev);
1862 for (; i >= 0; i--) {
1863 free_irq(adapter->msix_entries[i].vector,
1864 adapter->q_vector[i]);
1867 ixgbe_reset_q_vectors(adapter);
1869 free_irq(adapter->pdev->irq, netdev);
1874 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
1875 * @adapter: board private structure
1877 static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
1879 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1880 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
1882 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000);
1883 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0);
1884 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0);
1886 IXGBE_WRITE_FLUSH(&adapter->hw);
1887 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
1889 for (i = 0; i < adapter->num_msix_vectors; i++)
1890 synchronize_irq(adapter->msix_entries[i].vector);
1892 synchronize_irq(adapter->pdev->irq);
1897 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
1900 static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
1902 struct ixgbe_hw *hw = &adapter->hw;
1904 IXGBE_WRITE_REG(hw, IXGBE_EITR(0),
1905 EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr_param));
1907 ixgbe_set_ivar(adapter, 0, 0, 0);
1908 ixgbe_set_ivar(adapter, 1, 0, 0);
1910 map_vector_to_rxq(adapter, 0, 0);
1911 map_vector_to_txq(adapter, 0, 0);
1913 DPRINTK(HW, INFO, "Legacy interrupt IVAR setup done\n");
1917 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
1918 * @adapter: board private structure
1920 * Configure the Tx unit of the MAC after a reset.
1922 static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
1925 struct ixgbe_hw *hw = &adapter->hw;
1926 u32 i, j, tdlen, txctrl;
1928 /* Setup the HW Tx Head and Tail descriptor pointers */
1929 for (i = 0; i < adapter->num_tx_queues; i++) {
1930 struct ixgbe_ring *ring = &adapter->tx_ring[i];
1933 tdlen = ring->count * sizeof(union ixgbe_adv_tx_desc);
1934 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(j),
1935 (tdba & DMA_BIT_MASK(32)));
1936 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(j), (tdba >> 32));
1937 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(j), tdlen);
1938 IXGBE_WRITE_REG(hw, IXGBE_TDH(j), 0);
1939 IXGBE_WRITE_REG(hw, IXGBE_TDT(j), 0);
1940 adapter->tx_ring[i].head = IXGBE_TDH(j);
1941 adapter->tx_ring[i].tail = IXGBE_TDT(j);
1943 * Disable Tx Head Writeback RO bit, since this hoses
1944 * bookkeeping if things aren't delivered in order.
1946 switch (hw->mac.type) {
1947 case ixgbe_mac_82598EB:
1948 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(j));
1950 case ixgbe_mac_82599EB:
1952 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(j));
1955 txctrl &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN;
1956 switch (hw->mac.type) {
1957 case ixgbe_mac_82598EB:
1958 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(j), txctrl);
1960 case ixgbe_mac_82599EB:
1962 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(j), txctrl);
1967 if (hw->mac.type == ixgbe_mac_82599EB) {
1970 /* disable the arbiter while setting MTQC */
1971 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
1972 rttdcs |= IXGBE_RTTDCS_ARBDIS;
1973 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
1975 /* We enable 8 traffic classes, DCB only */
1976 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
1977 IXGBE_WRITE_REG(hw, IXGBE_MTQC, (IXGBE_MTQC_RT_ENA |
1978 IXGBE_MTQC_8TC_8TQ));
1980 IXGBE_WRITE_REG(hw, IXGBE_MTQC, IXGBE_MTQC_64Q_1PB);
1982 /* re-eable the arbiter */
1983 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
1984 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
1988 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
1990 static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter,
1991 struct ixgbe_ring *rx_ring)
1995 struct ixgbe_ring_feature *feature = adapter->ring_feature;
1997 index = rx_ring->reg_idx;
1998 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
2000 mask = (unsigned long) feature[RING_F_RSS].mask;
2001 index = index & mask;
2003 srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(index));
2005 srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK;
2006 srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK;
2008 srrctl |= (IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
2009 IXGBE_SRRCTL_BSIZEHDR_MASK;
2011 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
2012 #if (PAGE_SIZE / 2) > IXGBE_MAX_RXBUFFER
2013 srrctl |= IXGBE_MAX_RXBUFFER >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2015 srrctl |= (PAGE_SIZE / 2) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2017 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
2019 srrctl |= ALIGN(rx_ring->rx_buf_len, 1024) >>
2020 IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2021 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
2024 IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(index), srrctl);
2027 static u32 ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
2032 if (!(adapter->hw.mac.type == ixgbe_mac_82599EB))
2035 mask = adapter->flags & (IXGBE_FLAG_RSS_ENABLED
2036 #ifdef CONFIG_IXGBE_DCB
2037 | IXGBE_FLAG_DCB_ENABLED
2042 case (IXGBE_FLAG_RSS_ENABLED):
2043 mrqc = IXGBE_MRQC_RSSEN;
2045 #ifdef CONFIG_IXGBE_DCB
2046 case (IXGBE_FLAG_DCB_ENABLED):
2047 mrqc = IXGBE_MRQC_RT8TCEN;
2049 #endif /* CONFIG_IXGBE_DCB */
2058 * ixgbe_configure_rscctl - enable RSC for the indicated ring
2059 * @adapter: address of board private structure
2060 * @index: index of ring to set
2061 * @rx_buf_len: rx buffer length
2063 static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter, int index,
2066 struct ixgbe_ring *rx_ring;
2067 struct ixgbe_hw *hw = &adapter->hw;
2071 rx_ring = &adapter->rx_ring[index];
2072 j = rx_ring->reg_idx;
2073 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(j));
2074 rscctrl |= IXGBE_RSCCTL_RSCEN;
2076 * we must limit the number of descriptors so that the
2077 * total size of max desc * buf_len is not greater
2080 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
2081 #if (MAX_SKB_FRAGS > 16)
2082 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
2083 #elif (MAX_SKB_FRAGS > 8)
2084 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
2085 #elif (MAX_SKB_FRAGS > 4)
2086 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
2088 rscctrl |= IXGBE_RSCCTL_MAXDESC_1;
2091 if (rx_buf_len < IXGBE_RXBUFFER_4096)
2092 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
2093 else if (rx_buf_len < IXGBE_RXBUFFER_8192)
2094 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
2096 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
2098 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(j), rscctrl);
2102 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
2103 * @adapter: board private structure
2105 * Configure the Rx unit of the MAC after a reset.
2107 static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
2110 struct ixgbe_hw *hw = &adapter->hw;
2111 struct ixgbe_ring *rx_ring;
2112 struct net_device *netdev = adapter->netdev;
2113 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
2115 u32 rdlen, rxctrl, rxcsum;
2116 static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D,
2117 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE,
2118 0x6A3E67EA, 0x14364D17, 0x3BED200D};
2120 u32 reta = 0, mrqc = 0;
2124 /* Decide whether to use packet split mode or not */
2125 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
2127 /* Set the RX buffer length according to the mode */
2128 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
2129 rx_buf_len = IXGBE_RX_HDR_SIZE;
2130 if (hw->mac.type == ixgbe_mac_82599EB) {
2131 /* PSRTYPE must be initialized in 82599 */
2132 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
2133 IXGBE_PSRTYPE_UDPHDR |
2134 IXGBE_PSRTYPE_IPV4HDR |
2135 IXGBE_PSRTYPE_IPV6HDR |
2136 IXGBE_PSRTYPE_L2HDR;
2137 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(0), psrtype);
2140 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
2141 (netdev->mtu <= ETH_DATA_LEN))
2142 rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
2144 rx_buf_len = ALIGN(max_frame, 1024);
2147 fctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_FCTRL);
2148 fctrl |= IXGBE_FCTRL_BAM;
2149 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
2150 fctrl |= IXGBE_FCTRL_PMCF;
2151 IXGBE_WRITE_REG(&adapter->hw, IXGBE_FCTRL, fctrl);
2153 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
2154 if (adapter->netdev->mtu <= ETH_DATA_LEN)
2155 hlreg0 &= ~IXGBE_HLREG0_JUMBOEN;
2157 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
2159 if (netdev->features & NETIF_F_FCOE_MTU)
2160 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
2162 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
2164 rdlen = adapter->rx_ring[0].count * sizeof(union ixgbe_adv_rx_desc);
2165 /* disable receives while setting up the descriptors */
2166 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
2167 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
2170 * Setup the HW Rx Head and Tail Descriptor Pointers and
2171 * the Base and Length of the Rx Descriptor Ring
2173 for (i = 0; i < adapter->num_rx_queues; i++) {
2174 rx_ring = &adapter->rx_ring[i];
2175 rdba = rx_ring->dma;
2176 j = rx_ring->reg_idx;
2177 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(j), (rdba & DMA_BIT_MASK(32)));
2178 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(j), (rdba >> 32));
2179 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(j), rdlen);
2180 IXGBE_WRITE_REG(hw, IXGBE_RDH(j), 0);
2181 IXGBE_WRITE_REG(hw, IXGBE_RDT(j), 0);
2182 rx_ring->head = IXGBE_RDH(j);
2183 rx_ring->tail = IXGBE_RDT(j);
2184 rx_ring->rx_buf_len = rx_buf_len;
2186 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)
2187 rx_ring->flags |= IXGBE_RING_RX_PS_ENABLED;
2189 rx_ring->flags &= ~IXGBE_RING_RX_PS_ENABLED;
2192 if (netdev->features & NETIF_F_FCOE_MTU) {
2193 struct ixgbe_ring_feature *f;
2194 f = &adapter->ring_feature[RING_F_FCOE];
2195 if ((i >= f->mask) && (i < f->mask + f->indices)) {
2196 rx_ring->flags &= ~IXGBE_RING_RX_PS_ENABLED;
2197 if (rx_buf_len < IXGBE_FCOE_JUMBO_FRAME_SIZE)
2198 rx_ring->rx_buf_len =
2199 IXGBE_FCOE_JUMBO_FRAME_SIZE;
2203 #endif /* IXGBE_FCOE */
2204 ixgbe_configure_srrctl(adapter, rx_ring);
2207 if (hw->mac.type == ixgbe_mac_82598EB) {
2209 * For VMDq support of different descriptor types or
2210 * buffer sizes through the use of multiple SRRCTL
2211 * registers, RDRXCTL.MVMEN must be set to 1
2213 * also, the manual doesn't mention it clearly but DCA hints
2214 * will only use queue 0's tags unless this bit is set. Side
2215 * effects of setting this bit are only that SRRCTL must be
2216 * fully programmed [0..15]
2218 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
2219 rdrxctl |= IXGBE_RDRXCTL_MVMEN;
2220 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
2223 /* Program MRQC for the distribution of queues */
2224 mrqc = ixgbe_setup_mrqc(adapter);
2226 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
2227 /* Fill out redirection table */
2228 for (i = 0, j = 0; i < 128; i++, j++) {
2229 if (j == adapter->ring_feature[RING_F_RSS].indices)
2231 /* reta = 4-byte sliding window of
2232 * 0x00..(indices-1)(indices-1)00..etc. */
2233 reta = (reta << 8) | (j * 0x11);
2235 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
2238 /* Fill out hash function seeds */
2239 for (i = 0; i < 10; i++)
2240 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]);
2242 if (hw->mac.type == ixgbe_mac_82598EB)
2243 mrqc |= IXGBE_MRQC_RSSEN;
2244 /* Perform hash on these packet types */
2245 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4
2246 | IXGBE_MRQC_RSS_FIELD_IPV4_TCP
2247 | IXGBE_MRQC_RSS_FIELD_IPV4_UDP
2248 | IXGBE_MRQC_RSS_FIELD_IPV6
2249 | IXGBE_MRQC_RSS_FIELD_IPV6_TCP
2250 | IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
2252 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
2254 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
2256 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED ||
2257 adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED) {
2258 /* Disable indicating checksum in descriptor, enables
2260 rxcsum |= IXGBE_RXCSUM_PCSD;
2262 if (!(rxcsum & IXGBE_RXCSUM_PCSD)) {
2263 /* Enable IPv4 payload checksum for UDP fragments
2264 * if PCSD is not set */
2265 rxcsum |= IXGBE_RXCSUM_IPPCSE;
2268 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
2270 if (hw->mac.type == ixgbe_mac_82599EB) {
2271 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
2272 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
2273 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
2274 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
2277 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
2278 /* Enable 82599 HW-RSC */
2279 for (i = 0; i < adapter->num_rx_queues; i++)
2280 ixgbe_configure_rscctl(adapter, i, rx_buf_len);
2282 /* Disable RSC for ACK packets */
2283 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU,
2284 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU)));
2288 static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
2290 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2291 struct ixgbe_hw *hw = &adapter->hw;
2293 /* add VID to filter table */
2294 hw->mac.ops.set_vfta(&adapter->hw, vid, 0, true);
2297 static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
2299 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2300 struct ixgbe_hw *hw = &adapter->hw;
2302 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2303 ixgbe_irq_disable(adapter);
2305 vlan_group_set_device(adapter->vlgrp, vid, NULL);
2307 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2308 ixgbe_irq_enable(adapter);
2310 /* remove VID from filter table */
2311 hw->mac.ops.set_vfta(&adapter->hw, vid, 0, false);
2314 static void ixgbe_vlan_rx_register(struct net_device *netdev,
2315 struct vlan_group *grp)
2317 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2321 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2322 ixgbe_irq_disable(adapter);
2323 adapter->vlgrp = grp;
2326 * For a DCB driver, always enable VLAN tag stripping so we can
2327 * still receive traffic from a DCB-enabled host even if we're
2330 ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL);
2331 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
2332 ctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE;
2333 ctrl &= ~IXGBE_VLNCTRL_CFIEN;
2334 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl);
2335 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
2336 ctrl |= IXGBE_VLNCTRL_VFE;
2337 /* enable VLAN tag insert/strip */
2338 ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_VLNCTRL);
2339 ctrl &= ~IXGBE_VLNCTRL_CFIEN;
2340 IXGBE_WRITE_REG(&adapter->hw, IXGBE_VLNCTRL, ctrl);
2341 for (i = 0; i < adapter->num_rx_queues; i++) {
2342 j = adapter->rx_ring[i].reg_idx;
2343 ctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_RXDCTL(j));
2344 ctrl |= IXGBE_RXDCTL_VME;
2345 IXGBE_WRITE_REG(&adapter->hw, IXGBE_RXDCTL(j), ctrl);
2348 ixgbe_vlan_rx_add_vid(netdev, 0);
2350 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2351 ixgbe_irq_enable(adapter);
2354 static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
2356 ixgbe_vlan_rx_register(adapter->netdev, adapter->vlgrp);
2358 if (adapter->vlgrp) {
2360 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
2361 if (!vlan_group_get_device(adapter->vlgrp, vid))
2363 ixgbe_vlan_rx_add_vid(adapter->netdev, vid);
2368 static u8 *ixgbe_addr_list_itr(struct ixgbe_hw *hw, u8 **mc_addr_ptr, u32 *vmdq)
2370 struct dev_mc_list *mc_ptr;
2371 u8 *addr = *mc_addr_ptr;
2374 mc_ptr = container_of(addr, struct dev_mc_list, dmi_addr[0]);
2376 *mc_addr_ptr = mc_ptr->next->dmi_addr;
2378 *mc_addr_ptr = NULL;
2384 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
2385 * @netdev: network interface device structure
2387 * The set_rx_method entry point is called whenever the unicast/multicast
2388 * address list or the network interface flags are updated. This routine is
2389 * responsible for configuring the hardware for proper unicast, multicast and
2392 static void ixgbe_set_rx_mode(struct net_device *netdev)
2394 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2395 struct ixgbe_hw *hw = &adapter->hw;
2397 u8 *addr_list = NULL;
2400 /* Check for Promiscuous and All Multicast modes */
2402 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
2403 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
2405 if (netdev->flags & IFF_PROMISC) {
2406 hw->addr_ctrl.user_set_promisc = 1;
2407 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
2408 vlnctrl &= ~IXGBE_VLNCTRL_VFE;
2410 if (netdev->flags & IFF_ALLMULTI) {
2411 fctrl |= IXGBE_FCTRL_MPE;
2412 fctrl &= ~IXGBE_FCTRL_UPE;
2414 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
2416 vlnctrl |= IXGBE_VLNCTRL_VFE;
2417 hw->addr_ctrl.user_set_promisc = 0;
2420 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
2421 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
2423 /* reprogram secondary unicast list */
2424 hw->mac.ops.update_uc_addr_list(hw, &netdev->uc.list);
2426 /* reprogram multicast list */
2427 addr_count = netdev->mc_count;
2429 addr_list = netdev->mc_list->dmi_addr;
2430 hw->mac.ops.update_mc_addr_list(hw, addr_list, addr_count,
2431 ixgbe_addr_list_itr);
2434 static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
2437 struct ixgbe_q_vector *q_vector;
2438 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2440 /* legacy and MSI only use one vector */
2441 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
2444 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
2445 struct napi_struct *napi;
2446 q_vector = adapter->q_vector[q_idx];
2447 napi = &q_vector->napi;
2448 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2449 if (!q_vector->rxr_count || !q_vector->txr_count) {
2450 if (q_vector->txr_count == 1)
2451 napi->poll = &ixgbe_clean_txonly;
2452 else if (q_vector->rxr_count == 1)
2453 napi->poll = &ixgbe_clean_rxonly;
2461 static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
2464 struct ixgbe_q_vector *q_vector;
2465 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2467 /* legacy and MSI only use one vector */
2468 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
2471 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
2472 q_vector = adapter->q_vector[q_idx];
2473 napi_disable(&q_vector->napi);
2477 #ifdef CONFIG_IXGBE_DCB
2479 * ixgbe_configure_dcb - Configure DCB hardware
2480 * @adapter: ixgbe adapter struct
2482 * This is called by the driver on open to configure the DCB hardware.
2483 * This is also called by the gennetlink interface when reconfiguring
2486 static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
2488 struct ixgbe_hw *hw = &adapter->hw;
2489 u32 txdctl, vlnctrl;
2492 ixgbe_dcb_check_config(&adapter->dcb_cfg);
2493 ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_TX_CONFIG);
2494 ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_RX_CONFIG);
2496 /* reconfigure the hardware */
2497 ixgbe_dcb_hw_config(&adapter->hw, &adapter->dcb_cfg);
2499 for (i = 0; i < adapter->num_tx_queues; i++) {
2500 j = adapter->tx_ring[i].reg_idx;
2501 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
2502 /* PThresh workaround for Tx hang with DFP enabled. */
2504 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
2506 /* Enable VLAN tag insert/strip */
2507 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
2508 if (hw->mac.type == ixgbe_mac_82598EB) {
2509 vlnctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE;
2510 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
2511 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
2512 } else if (hw->mac.type == ixgbe_mac_82599EB) {
2513 vlnctrl |= IXGBE_VLNCTRL_VFE;
2514 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
2515 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
2516 for (i = 0; i < adapter->num_rx_queues; i++) {
2517 j = adapter->rx_ring[i].reg_idx;
2518 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
2519 vlnctrl |= IXGBE_RXDCTL_VME;
2520 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
2523 hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true);
2527 static void ixgbe_configure(struct ixgbe_adapter *adapter)
2529 struct net_device *netdev = adapter->netdev;
2530 struct ixgbe_hw *hw = &adapter->hw;
2533 ixgbe_set_rx_mode(netdev);
2535 ixgbe_restore_vlan(adapter);
2536 #ifdef CONFIG_IXGBE_DCB
2537 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
2538 if (hw->mac.type == ixgbe_mac_82598EB)
2539 netif_set_gso_max_size(netdev, 32768);
2541 netif_set_gso_max_size(netdev, 65536);
2542 ixgbe_configure_dcb(adapter);
2544 netif_set_gso_max_size(netdev, 65536);
2547 netif_set_gso_max_size(netdev, 65536);
2551 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
2552 ixgbe_configure_fcoe(adapter);
2554 #endif /* IXGBE_FCOE */
2555 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
2556 for (i = 0; i < adapter->num_tx_queues; i++)
2557 adapter->tx_ring[i].atr_sample_rate =
2558 adapter->atr_sample_rate;
2559 ixgbe_init_fdir_signature_82599(hw, adapter->fdir_pballoc);
2560 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
2561 ixgbe_init_fdir_perfect_82599(hw, adapter->fdir_pballoc);
2564 ixgbe_configure_tx(adapter);
2565 ixgbe_configure_rx(adapter);
2566 for (i = 0; i < adapter->num_rx_queues; i++)
2567 ixgbe_alloc_rx_buffers(adapter, &adapter->rx_ring[i],
2568 (adapter->rx_ring[i].count - 1));
2571 static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
2573 switch (hw->phy.type) {
2574 case ixgbe_phy_sfp_avago:
2575 case ixgbe_phy_sfp_ftl:
2576 case ixgbe_phy_sfp_intel:
2577 case ixgbe_phy_sfp_unknown:
2578 case ixgbe_phy_tw_tyco:
2579 case ixgbe_phy_tw_unknown:
2587 * ixgbe_sfp_link_config - set up SFP+ link
2588 * @adapter: pointer to private adapter struct
2590 static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter)
2592 struct ixgbe_hw *hw = &adapter->hw;
2594 if (hw->phy.multispeed_fiber) {
2596 * In multispeed fiber setups, the device may not have
2597 * had a physical connection when the driver loaded.
2598 * If that's the case, the initial link configuration
2599 * couldn't get the MAC into 10G or 1G mode, so we'll
2600 * never have a link status change interrupt fire.
2601 * We need to try and force an autonegotiation
2602 * session, then bring up link.
2604 hw->mac.ops.setup_sfp(hw);
2605 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK))
2606 schedule_work(&adapter->multispeed_fiber_task);
2609 * Direct Attach Cu and non-multispeed fiber modules
2610 * still need to be configured properly prior to
2613 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_MOD_TASK))
2614 schedule_work(&adapter->sfp_config_module_task);
2619 * ixgbe_non_sfp_link_config - set up non-SFP+ link
2620 * @hw: pointer to private hardware struct
2622 * Returns 0 on success, negative on failure
2624 static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw)
2627 bool negotiation, link_up = false;
2628 u32 ret = IXGBE_ERR_LINK_SETUP;
2630 if (hw->mac.ops.check_link)
2631 ret = hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
2636 if (hw->mac.ops.get_link_capabilities)
2637 ret = hw->mac.ops.get_link_capabilities(hw, &autoneg, &negotiation);
2641 if (hw->mac.ops.setup_link)
2642 ret = hw->mac.ops.setup_link(hw, autoneg, negotiation, link_up);
2647 #define IXGBE_MAX_RX_DESC_POLL 10
2648 static inline void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter,
2651 int j = adapter->rx_ring[rxr].reg_idx;
2654 for (k = 0; k < IXGBE_MAX_RX_DESC_POLL; k++) {
2655 if (IXGBE_READ_REG(&adapter->hw,
2656 IXGBE_RXDCTL(j)) & IXGBE_RXDCTL_ENABLE)
2661 if (k >= IXGBE_MAX_RX_DESC_POLL) {
2662 DPRINTK(DRV, ERR, "RXDCTL.ENABLE on Rx queue %d "
2663 "not set within the polling period\n", rxr);
2665 ixgbe_release_rx_desc(&adapter->hw, &adapter->rx_ring[rxr],
2666 (adapter->rx_ring[rxr].count - 1));
2669 static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
2671 struct net_device *netdev = adapter->netdev;
2672 struct ixgbe_hw *hw = &adapter->hw;
2674 int num_rx_rings = adapter->num_rx_queues;
2676 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
2677 u32 txdctl, rxdctl, mhadd;
2681 ixgbe_get_hw_control(adapter);
2683 if ((adapter->flags & IXGBE_FLAG_MSIX_ENABLED) ||
2684 (adapter->flags & IXGBE_FLAG_MSI_ENABLED)) {
2685 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2686 gpie = (IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_EIAME |
2687 IXGBE_GPIE_PBA_SUPPORT | IXGBE_GPIE_OCD);
2692 /* XXX: to interrupt immediately for EICS writes, enable this */
2693 /* gpie |= IXGBE_GPIE_EIMEN; */
2694 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
2697 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
2698 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
2699 * specifically only auto mask tx and rx interrupts */
2700 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
2703 /* Enable fan failure interrupt if media type is copper */
2704 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
2705 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
2706 gpie |= IXGBE_SDP1_GPIEN;
2707 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
2710 if (hw->mac.type == ixgbe_mac_82599EB) {
2711 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
2712 gpie |= IXGBE_SDP1_GPIEN;
2713 gpie |= IXGBE_SDP2_GPIEN;
2714 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
2718 /* adjust max frame to be able to do baby jumbo for FCoE */
2719 if ((netdev->features & NETIF_F_FCOE_MTU) &&
2720 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE))
2721 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE;
2723 #endif /* IXGBE_FCOE */
2724 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD);
2725 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) {
2726 mhadd &= ~IXGBE_MHADD_MFS_MASK;
2727 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT;
2729 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
2732 for (i = 0; i < adapter->num_tx_queues; i++) {
2733 j = adapter->tx_ring[i].reg_idx;
2734 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
2735 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
2736 txdctl |= (8 << 16);
2737 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
2740 if (hw->mac.type == ixgbe_mac_82599EB) {
2741 /* DMATXCTL.EN must be set after all Tx queue config is done */
2742 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
2743 dmatxctl |= IXGBE_DMATXCTL_TE;
2744 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
2746 for (i = 0; i < adapter->num_tx_queues; i++) {
2747 j = adapter->tx_ring[i].reg_idx;
2748 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
2749 txdctl |= IXGBE_TXDCTL_ENABLE;
2750 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
2753 for (i = 0; i < num_rx_rings; i++) {
2754 j = adapter->rx_ring[i].reg_idx;
2755 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
2756 /* enable PTHRESH=32 descriptors (half the internal cache)
2757 * and HTHRESH=0 descriptors (to minimize latency on fetch),
2758 * this also removes a pesky rx_no_buffer_count increment */
2760 rxdctl |= IXGBE_RXDCTL_ENABLE;
2761 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), rxdctl);
2762 if (hw->mac.type == ixgbe_mac_82599EB)
2763 ixgbe_rx_desc_queue_enable(adapter, i);
2765 /* enable all receives */
2766 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
2767 if (hw->mac.type == ixgbe_mac_82598EB)
2768 rxdctl |= (IXGBE_RXCTRL_DMBYPS | IXGBE_RXCTRL_RXEN);
2770 rxdctl |= IXGBE_RXCTRL_RXEN;
2771 hw->mac.ops.enable_rx_dma(hw, rxdctl);
2773 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
2774 ixgbe_configure_msix(adapter);
2776 ixgbe_configure_msi_and_legacy(adapter);
2778 clear_bit(__IXGBE_DOWN, &adapter->state);
2779 ixgbe_napi_enable_all(adapter);
2781 /* clear any pending interrupts, may auto mask */
2782 IXGBE_READ_REG(hw, IXGBE_EICR);
2784 ixgbe_irq_enable(adapter);
2787 * If this adapter has a fan, check to see if we had a failure
2788 * before we enabled the interrupt.
2790 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
2791 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2792 if (esdp & IXGBE_ESDP_SDP1)
2794 "Fan has stopped, replace the adapter\n");
2798 * For hot-pluggable SFP+ devices, a new SFP+ module may have
2799 * arrived before interrupts were enabled but after probe. Such
2800 * devices wouldn't have their type identified yet. We need to
2801 * kick off the SFP+ module setup first, then try to bring up link.
2802 * If we're not hot-pluggable SFP+, we just need to configure link
2805 if (hw->phy.type == ixgbe_phy_unknown) {
2806 err = hw->phy.ops.identify(hw);
2807 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
2809 * Take the device down and schedule the sfp tasklet
2810 * which will unregister_netdev and log it.
2812 ixgbe_down(adapter);
2813 schedule_work(&adapter->sfp_config_module_task);
2818 if (ixgbe_is_sfp(hw)) {
2819 ixgbe_sfp_link_config(adapter);
2821 err = ixgbe_non_sfp_link_config(hw);
2823 DPRINTK(PROBE, ERR, "link_config FAILED %d\n", err);
2826 for (i = 0; i < adapter->num_tx_queues; i++)
2827 set_bit(__IXGBE_FDIR_INIT_DONE,
2828 &(adapter->tx_ring[i].reinit_state));
2830 /* enable transmits */
2831 netif_tx_start_all_queues(netdev);
2833 /* bring the link up in the watchdog, this could race with our first
2834 * link up interrupt but shouldn't be a problem */
2835 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
2836 adapter->link_check_timeout = jiffies;
2837 mod_timer(&adapter->watchdog_timer, jiffies);
2841 void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
2843 WARN_ON(in_interrupt());
2844 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
2846 ixgbe_down(adapter);
2848 clear_bit(__IXGBE_RESETTING, &adapter->state);
2851 int ixgbe_up(struct ixgbe_adapter *adapter)
2853 /* hardware has been reset, we need to reload some things */
2854 ixgbe_configure(adapter);
2856 return ixgbe_up_complete(adapter);
2859 void ixgbe_reset(struct ixgbe_adapter *adapter)
2861 struct ixgbe_hw *hw = &adapter->hw;
2864 err = hw->mac.ops.init_hw(hw);
2867 case IXGBE_ERR_SFP_NOT_PRESENT:
2869 case IXGBE_ERR_MASTER_REQUESTS_PENDING:
2870 dev_err(&adapter->pdev->dev, "master disable timed out\n");
2872 case IXGBE_ERR_EEPROM_VERSION:
2873 /* We are running on a pre-production device, log a warning */
2874 dev_warn(&adapter->pdev->dev, "This device is a pre-production "
2875 "adapter/LOM. Please be aware there may be issues "
2876 "associated with your hardware. If you are "
2877 "experiencing problems please contact your Intel or "
2878 "hardware representative who provided you with this "
2882 dev_err(&adapter->pdev->dev, "Hardware Error: %d\n", err);
2885 /* reprogram the RAR[0] in case user changed it. */
2886 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
2890 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
2891 * @adapter: board private structure
2892 * @rx_ring: ring to free buffers from
2894 static void ixgbe_clean_rx_ring(struct ixgbe_adapter *adapter,
2895 struct ixgbe_ring *rx_ring)
2897 struct pci_dev *pdev = adapter->pdev;
2901 /* Free all the Rx ring sk_buffs */
2903 for (i = 0; i < rx_ring->count; i++) {
2904 struct ixgbe_rx_buffer *rx_buffer_info;
2906 rx_buffer_info = &rx_ring->rx_buffer_info[i];
2907 if (rx_buffer_info->dma) {
2908 pci_unmap_single(pdev, rx_buffer_info->dma,
2909 rx_ring->rx_buf_len,
2910 PCI_DMA_FROMDEVICE);
2911 rx_buffer_info->dma = 0;
2913 if (rx_buffer_info->skb) {
2914 struct sk_buff *skb = rx_buffer_info->skb;
2915 rx_buffer_info->skb = NULL;
2917 struct sk_buff *this = skb;
2919 dev_kfree_skb(this);
2922 if (!rx_buffer_info->page)
2924 if (rx_buffer_info->page_dma) {
2925 pci_unmap_page(pdev, rx_buffer_info->page_dma,
2926 PAGE_SIZE / 2, PCI_DMA_FROMDEVICE);
2927 rx_buffer_info->page_dma = 0;
2929 put_page(rx_buffer_info->page);
2930 rx_buffer_info->page = NULL;
2931 rx_buffer_info->page_offset = 0;
2934 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
2935 memset(rx_ring->rx_buffer_info, 0, size);
2937 /* Zero out the descriptor ring */
2938 memset(rx_ring->desc, 0, rx_ring->size);
2940 rx_ring->next_to_clean = 0;
2941 rx_ring->next_to_use = 0;
2944 writel(0, adapter->hw.hw_addr + rx_ring->head);
2946 writel(0, adapter->hw.hw_addr + rx_ring->tail);
2950 * ixgbe_clean_tx_ring - Free Tx Buffers
2951 * @adapter: board private structure
2952 * @tx_ring: ring to be cleaned
2954 static void ixgbe_clean_tx_ring(struct ixgbe_adapter *adapter,
2955 struct ixgbe_ring *tx_ring)
2957 struct ixgbe_tx_buffer *tx_buffer_info;
2961 /* Free all the Tx ring sk_buffs */
2963 for (i = 0; i < tx_ring->count; i++) {
2964 tx_buffer_info = &tx_ring->tx_buffer_info[i];
2965 ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info);
2968 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
2969 memset(tx_ring->tx_buffer_info, 0, size);
2971 /* Zero out the descriptor ring */
2972 memset(tx_ring->desc, 0, tx_ring->size);
2974 tx_ring->next_to_use = 0;
2975 tx_ring->next_to_clean = 0;
2978 writel(0, adapter->hw.hw_addr + tx_ring->head);
2980 writel(0, adapter->hw.hw_addr + tx_ring->tail);
2984 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
2985 * @adapter: board private structure
2987 static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter)
2991 for (i = 0; i < adapter->num_rx_queues; i++)
2992 ixgbe_clean_rx_ring(adapter, &adapter->rx_ring[i]);
2996 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
2997 * @adapter: board private structure
2999 static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
3003 for (i = 0; i < adapter->num_tx_queues; i++)
3004 ixgbe_clean_tx_ring(adapter, &adapter->tx_ring[i]);
3007 void ixgbe_down(struct ixgbe_adapter *adapter)
3009 struct net_device *netdev = adapter->netdev;
3010 struct ixgbe_hw *hw = &adapter->hw;
3015 /* signal that we are down to the interrupt handler */
3016 set_bit(__IXGBE_DOWN, &adapter->state);
3018 /* disable receives */
3019 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3020 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
3022 netif_tx_disable(netdev);
3024 IXGBE_WRITE_FLUSH(hw);
3027 netif_tx_stop_all_queues(netdev);
3029 ixgbe_irq_disable(adapter);
3031 ixgbe_napi_disable_all(adapter);
3033 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
3034 del_timer_sync(&adapter->sfp_timer);
3035 del_timer_sync(&adapter->watchdog_timer);
3036 cancel_work_sync(&adapter->watchdog_task);
3038 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
3039 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
3040 cancel_work_sync(&adapter->fdir_reinit_task);
3042 /* disable transmits in the hardware now that interrupts are off */
3043 for (i = 0; i < adapter->num_tx_queues; i++) {
3044 j = adapter->tx_ring[i].reg_idx;
3045 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
3046 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j),
3047 (txdctl & ~IXGBE_TXDCTL_ENABLE));
3049 /* Disable the Tx DMA engine on 82599 */
3050 if (hw->mac.type == ixgbe_mac_82599EB)
3051 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL,
3052 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
3053 ~IXGBE_DMATXCTL_TE));
3055 netif_carrier_off(netdev);
3057 if (!pci_channel_offline(adapter->pdev))
3058 ixgbe_reset(adapter);
3059 ixgbe_clean_all_tx_rings(adapter);
3060 ixgbe_clean_all_rx_rings(adapter);
3062 #ifdef CONFIG_IXGBE_DCA
3063 /* since we reset the hardware DCA settings were cleared */
3064 ixgbe_setup_dca(adapter);
3069 * ixgbe_poll - NAPI Rx polling callback
3070 * @napi: structure for representing this polling device
3071 * @budget: how many packets driver is allowed to clean
3073 * This function is used for legacy and MSI, NAPI mode
3075 static int ixgbe_poll(struct napi_struct *napi, int budget)
3077 struct ixgbe_q_vector *q_vector =
3078 container_of(napi, struct ixgbe_q_vector, napi);
3079 struct ixgbe_adapter *adapter = q_vector->adapter;
3080 int tx_clean_complete, work_done = 0;
3082 #ifdef CONFIG_IXGBE_DCA
3083 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
3084 ixgbe_update_tx_dca(adapter, adapter->tx_ring);
3085 ixgbe_update_rx_dca(adapter, adapter->rx_ring);
3089 tx_clean_complete = ixgbe_clean_tx_irq(q_vector, adapter->tx_ring);
3090 ixgbe_clean_rx_irq(q_vector, adapter->rx_ring, &work_done, budget);
3092 if (!tx_clean_complete)
3095 /* If budget not fully consumed, exit the polling mode */
3096 if (work_done < budget) {
3097 napi_complete(napi);
3098 if (adapter->rx_itr_setting & 1)
3099 ixgbe_set_itr(adapter);
3100 if (!test_bit(__IXGBE_DOWN, &adapter->state))
3101 ixgbe_irq_enable_queues(adapter, IXGBE_EIMS_RTX_QUEUE);
3107 * ixgbe_tx_timeout - Respond to a Tx Hang
3108 * @netdev: network interface device structure
3110 static void ixgbe_tx_timeout(struct net_device *netdev)
3112 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3114 /* Do the reset outside of interrupt context */
3115 schedule_work(&adapter->reset_task);
3118 static void ixgbe_reset_task(struct work_struct *work)
3120 struct ixgbe_adapter *adapter;
3121 adapter = container_of(work, struct ixgbe_adapter, reset_task);
3123 /* If we're already down or resetting, just bail */
3124 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
3125 test_bit(__IXGBE_RESETTING, &adapter->state))
3128 adapter->tx_timeout_count++;
3130 ixgbe_reinit_locked(adapter);
3133 #ifdef CONFIG_IXGBE_DCB
3134 static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter)
3137 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_DCB];
3139 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
3143 adapter->num_rx_queues = f->indices;
3144 adapter->num_tx_queues = f->indices;
3152 * ixgbe_set_rss_queues: Allocate queues for RSS
3153 * @adapter: board private structure to initialize
3155 * This is our "base" multiqueue mode. RSS (Receive Side Scaling) will try
3156 * to allocate one Rx queue per CPU, and if available, one Tx queue per CPU.
3159 static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter)
3162 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_RSS];
3164 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
3166 adapter->num_rx_queues = f->indices;
3167 adapter->num_tx_queues = f->indices;
3177 * ixgbe_set_fdir_queues: Allocate queues for Flow Director
3178 * @adapter: board private structure to initialize
3180 * Flow Director is an advanced Rx filter, attempting to get Rx flows back
3181 * to the original CPU that initiated the Tx session. This runs in addition
3182 * to RSS, so if a packet doesn't match an FDIR filter, we can still spread the
3183 * Rx load across CPUs using RSS.
3186 static bool inline ixgbe_set_fdir_queues(struct ixgbe_adapter *adapter)
3189 struct ixgbe_ring_feature *f_fdir = &adapter->ring_feature[RING_F_FDIR];
3191 f_fdir->indices = min((int)num_online_cpus(), f_fdir->indices);
3194 /* Flow Director must have RSS enabled */
3195 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
3196 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
3197 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)))) {
3198 adapter->num_tx_queues = f_fdir->indices;
3199 adapter->num_rx_queues = f_fdir->indices;
3202 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
3203 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
3210 * ixgbe_set_fcoe_queues: Allocate queues for Fiber Channel over Ethernet (FCoE)
3211 * @adapter: board private structure to initialize
3213 * FCoE RX FCRETA can use up to 8 rx queues for up to 8 different exchanges.
3214 * The ring feature mask is not used as a mask for FCoE, as it can take any 8
3215 * rx queues out of the max number of rx queues, instead, it is used as the
3216 * index of the first rx queue used by FCoE.
3219 static inline bool ixgbe_set_fcoe_queues(struct ixgbe_adapter *adapter)
3222 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
3224 f->indices = min((int)num_online_cpus(), f->indices);
3225 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
3226 adapter->num_rx_queues = 1;
3227 adapter->num_tx_queues = 1;
3228 #ifdef CONFIG_IXGBE_DCB
3229 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
3230 DPRINTK(PROBE, INFO, "FCoE enabled with DCB \n");
3231 ixgbe_set_dcb_queues(adapter);
3234 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
3235 DPRINTK(PROBE, INFO, "FCoE enabled with RSS \n");
3236 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
3237 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
3238 ixgbe_set_fdir_queues(adapter);
3240 ixgbe_set_rss_queues(adapter);
3242 /* adding FCoE rx rings to the end */
3243 f->mask = adapter->num_rx_queues;
3244 adapter->num_rx_queues += f->indices;
3245 adapter->num_tx_queues += f->indices;
3253 #endif /* IXGBE_FCOE */
3255 * ixgbe_set_num_queues: Allocate queues for device, feature dependant
3256 * @adapter: board private structure to initialize
3258 * This is the top level queue allocation routine. The order here is very
3259 * important, starting with the "most" number of features turned on at once,
3260 * and ending with the smallest set of features. This way large combinations
3261 * can be allocated if they're turned on, and smaller combinations are the
3262 * fallthrough conditions.
3265 static void ixgbe_set_num_queues(struct ixgbe_adapter *adapter)
3268 if (ixgbe_set_fcoe_queues(adapter))
3271 #endif /* IXGBE_FCOE */
3272 #ifdef CONFIG_IXGBE_DCB
3273 if (ixgbe_set_dcb_queues(adapter))
3277 if (ixgbe_set_fdir_queues(adapter))
3280 if (ixgbe_set_rss_queues(adapter))
3283 /* fallback to base case */
3284 adapter->num_rx_queues = 1;
3285 adapter->num_tx_queues = 1;
3288 /* Notify the stack of the (possibly) reduced Tx Queue count. */
3289 adapter->netdev->real_num_tx_queues = adapter->num_tx_queues;
3292 static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter,
3295 int err, vector_threshold;
3297 /* We'll want at least 3 (vector_threshold):
3300 * 3) Other (Link Status Change, etc.)
3301 * 4) TCP Timer (optional)
3303 vector_threshold = MIN_MSIX_COUNT;
3305 /* The more we get, the more we will assign to Tx/Rx Cleanup
3306 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
3307 * Right now, we simply care about how many we'll get; we'll
3308 * set them up later while requesting irq's.
3310 while (vectors >= vector_threshold) {
3311 err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
3313 if (!err) /* Success in acquiring all requested vectors. */
3316 vectors = 0; /* Nasty failure, quit now */
3317 else /* err == number of vectors we should try again with */
3321 if (vectors < vector_threshold) {
3322 /* Can't allocate enough MSI-X interrupts? Oh well.
3323 * This just means we'll go with either a single MSI
3324 * vector or fall back to legacy interrupts.
3326 DPRINTK(HW, DEBUG, "Unable to allocate MSI-X interrupts\n");
3327 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
3328 kfree(adapter->msix_entries);
3329 adapter->msix_entries = NULL;
3331 adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */
3333 * Adjust for only the vectors we'll use, which is minimum
3334 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
3335 * vectors we were allocated.
3337 adapter->num_msix_vectors = min(vectors,
3338 adapter->max_msix_q_vectors + NON_Q_VECTORS);
3343 * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS
3344 * @adapter: board private structure to initialize
3346 * Cache the descriptor ring offsets for RSS to the assigned rings.
3349 static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter)
3354 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
3355 for (i = 0; i < adapter->num_rx_queues; i++)
3356 adapter->rx_ring[i].reg_idx = i;
3357 for (i = 0; i < adapter->num_tx_queues; i++)
3358 adapter->tx_ring[i].reg_idx = i;
3367 #ifdef CONFIG_IXGBE_DCB
3369 * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB
3370 * @adapter: board private structure to initialize
3372 * Cache the descriptor ring offsets for DCB to the assigned rings.
3375 static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter)
3379 int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
3381 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
3382 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
3383 /* the number of queues is assumed to be symmetric */
3384 for (i = 0; i < dcb_i; i++) {
3385 adapter->rx_ring[i].reg_idx = i << 3;
3386 adapter->tx_ring[i].reg_idx = i << 2;
3389 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
3392 * Tx TC0 starts at: descriptor queue 0
3393 * Tx TC1 starts at: descriptor queue 32
3394 * Tx TC2 starts at: descriptor queue 64
3395 * Tx TC3 starts at: descriptor queue 80
3396 * Tx TC4 starts at: descriptor queue 96
3397 * Tx TC5 starts at: descriptor queue 104
3398 * Tx TC6 starts at: descriptor queue 112
3399 * Tx TC7 starts at: descriptor queue 120
3401 * Rx TC0-TC7 are offset by 16 queues each
3403 for (i = 0; i < 3; i++) {
3404 adapter->tx_ring[i].reg_idx = i << 5;
3405 adapter->rx_ring[i].reg_idx = i << 4;
3407 for ( ; i < 5; i++) {
3408 adapter->tx_ring[i].reg_idx =
3410 adapter->rx_ring[i].reg_idx = i << 4;
3412 for ( ; i < dcb_i; i++) {
3413 adapter->tx_ring[i].reg_idx =
3415 adapter->rx_ring[i].reg_idx = i << 4;
3419 } else if (dcb_i == 4) {
3421 * Tx TC0 starts at: descriptor queue 0
3422 * Tx TC1 starts at: descriptor queue 64
3423 * Tx TC2 starts at: descriptor queue 96
3424 * Tx TC3 starts at: descriptor queue 112
3426 * Rx TC0-TC3 are offset by 32 queues each
3428 adapter->tx_ring[0].reg_idx = 0;
3429 adapter->tx_ring[1].reg_idx = 64;
3430 adapter->tx_ring[2].reg_idx = 96;
3431 adapter->tx_ring[3].reg_idx = 112;
3432 for (i = 0 ; i < dcb_i; i++)
3433 adapter->rx_ring[i].reg_idx = i << 5;
3451 * ixgbe_cache_ring_fdir - Descriptor ring to register mapping for Flow Director
3452 * @adapter: board private structure to initialize
3454 * Cache the descriptor ring offsets for Flow Director to the assigned rings.
3457 static bool inline ixgbe_cache_ring_fdir(struct ixgbe_adapter *adapter)
3462 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
3463 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
3464 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))) {
3465 for (i = 0; i < adapter->num_rx_queues; i++)
3466 adapter->rx_ring[i].reg_idx = i;
3467 for (i = 0; i < adapter->num_tx_queues; i++)
3468 adapter->tx_ring[i].reg_idx = i;
3477 * ixgbe_cache_ring_fcoe - Descriptor ring to register mapping for the FCoE
3478 * @adapter: board private structure to initialize
3480 * Cache the descriptor ring offsets for FCoE mode to the assigned rings.
3483 static inline bool ixgbe_cache_ring_fcoe(struct ixgbe_adapter *adapter)
3485 int i, fcoe_rx_i = 0, fcoe_tx_i = 0;
3487 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
3489 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
3490 #ifdef CONFIG_IXGBE_DCB
3491 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
3492 struct ixgbe_fcoe *fcoe = &adapter->fcoe;
3494 ixgbe_cache_ring_dcb(adapter);
3495 /* find out queues in TC for FCoE */
3496 fcoe_rx_i = adapter->rx_ring[fcoe->tc].reg_idx + 1;
3497 fcoe_tx_i = adapter->tx_ring[fcoe->tc].reg_idx + 1;
3499 * In 82599, the number of Tx queues for each traffic
3500 * class for both 8-TC and 4-TC modes are:
3501 * TCs : TC0 TC1 TC2 TC3 TC4 TC5 TC6 TC7
3502 * 8 TCs: 32 32 16 16 8 8 8 8
3503 * 4 TCs: 64 64 32 32
3504 * We have max 8 queues for FCoE, where 8 the is
3505 * FCoE redirection table size. If TC for FCoE is
3506 * less than or equal to TC3, we have enough queues
3507 * to add max of 8 queues for FCoE, so we start FCoE
3508 * tx descriptor from the next one, i.e., reg_idx + 1.
3509 * If TC for FCoE is above TC3, implying 8 TC mode,
3510 * and we need 8 for FCoE, we have to take all queues
3511 * in that traffic class for FCoE.
3513 if ((f->indices == IXGBE_FCRETA_SIZE) && (fcoe->tc > 3))
3516 #endif /* CONFIG_IXGBE_DCB */
3517 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
3518 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
3519 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
3520 ixgbe_cache_ring_fdir(adapter);
3522 ixgbe_cache_ring_rss(adapter);
3524 fcoe_rx_i = f->mask;
3525 fcoe_tx_i = f->mask;
3527 for (i = 0; i < f->indices; i++, fcoe_rx_i++, fcoe_tx_i++) {
3528 adapter->rx_ring[f->mask + i].reg_idx = fcoe_rx_i;
3529 adapter->tx_ring[f->mask + i].reg_idx = fcoe_tx_i;
3536 #endif /* IXGBE_FCOE */
3538 * ixgbe_cache_ring_register - Descriptor ring to register mapping
3539 * @adapter: board private structure to initialize
3541 * Once we know the feature-set enabled for the device, we'll cache
3542 * the register offset the descriptor ring is assigned to.
3544 * Note, the order the various feature calls is important. It must start with
3545 * the "most" features enabled at the same time, then trickle down to the
3546 * least amount of features turned on at once.
3548 static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter)
3550 /* start with default case */
3551 adapter->rx_ring[0].reg_idx = 0;
3552 adapter->tx_ring[0].reg_idx = 0;
3555 if (ixgbe_cache_ring_fcoe(adapter))
3558 #endif /* IXGBE_FCOE */
3559 #ifdef CONFIG_IXGBE_DCB
3560 if (ixgbe_cache_ring_dcb(adapter))
3564 if (ixgbe_cache_ring_fdir(adapter))
3567 if (ixgbe_cache_ring_rss(adapter))
3572 * ixgbe_alloc_queues - Allocate memory for all rings
3573 * @adapter: board private structure to initialize
3575 * We allocate one ring per queue at run-time since we don't know the
3576 * number of queues at compile-time. The polling_netdev array is
3577 * intended for Multiqueue, but should work fine with a single queue.
3579 static int ixgbe_alloc_queues(struct ixgbe_adapter *adapter)
3583 adapter->tx_ring = kcalloc(adapter->num_tx_queues,
3584 sizeof(struct ixgbe_ring), GFP_KERNEL);
3585 if (!adapter->tx_ring)
3586 goto err_tx_ring_allocation;
3588 adapter->rx_ring = kcalloc(adapter->num_rx_queues,
3589 sizeof(struct ixgbe_ring), GFP_KERNEL);
3590 if (!adapter->rx_ring)
3591 goto err_rx_ring_allocation;
3593 for (i = 0; i < adapter->num_tx_queues; i++) {
3594 adapter->tx_ring[i].count = adapter->tx_ring_count;
3595 adapter->tx_ring[i].queue_index = i;
3598 for (i = 0; i < adapter->num_rx_queues; i++) {
3599 adapter->rx_ring[i].count = adapter->rx_ring_count;
3600 adapter->rx_ring[i].queue_index = i;
3603 ixgbe_cache_ring_register(adapter);
3607 err_rx_ring_allocation:
3608 kfree(adapter->tx_ring);
3609 err_tx_ring_allocation:
3614 * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported
3615 * @adapter: board private structure to initialize
3617 * Attempt to configure the interrupts using the best available
3618 * capabilities of the hardware and the kernel.
3620 static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter)
3622 struct ixgbe_hw *hw = &adapter->hw;
3624 int vector, v_budget;
3627 * It's easy to be greedy for MSI-X vectors, but it really
3628 * doesn't do us much good if we have a lot more vectors
3629 * than CPU's. So let's be conservative and only ask for
3630 * (roughly) twice the number of vectors as there are CPU's.
3632 v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
3633 (int)(num_online_cpus() * 2)) + NON_Q_VECTORS;
3636 * At the same time, hardware can only support a maximum of
3637 * hw.mac->max_msix_vectors vectors. With features
3638 * such as RSS and VMDq, we can easily surpass the number of Rx and Tx
3639 * descriptor queues supported by our device. Thus, we cap it off in
3640 * those rare cases where the cpu count also exceeds our vector limit.
3642 v_budget = min(v_budget, (int)hw->mac.max_msix_vectors);
3644 /* A failure in MSI-X entry allocation isn't fatal, but it does
3645 * mean we disable MSI-X capabilities of the adapter. */
3646 adapter->msix_entries = kcalloc(v_budget,
3647 sizeof(struct msix_entry), GFP_KERNEL);
3648 if (adapter->msix_entries) {
3649 for (vector = 0; vector < v_budget; vector++)
3650 adapter->msix_entries[vector].entry = vector;
3652 ixgbe_acquire_msix_vectors(adapter, v_budget);
3654 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
3658 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
3659 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
3660 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
3661 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
3662 adapter->atr_sample_rate = 0;
3663 ixgbe_set_num_queues(adapter);
3665 err = pci_enable_msi(adapter->pdev);
3667 adapter->flags |= IXGBE_FLAG_MSI_ENABLED;
3669 DPRINTK(HW, DEBUG, "Unable to allocate MSI interrupt, "
3670 "falling back to legacy. Error: %d\n", err);
3680 * ixgbe_alloc_q_vectors - Allocate memory for interrupt vectors
3681 * @adapter: board private structure to initialize
3683 * We allocate one q_vector per queue interrupt. If allocation fails we
3686 static int ixgbe_alloc_q_vectors(struct ixgbe_adapter *adapter)
3688 int q_idx, num_q_vectors;
3689 struct ixgbe_q_vector *q_vector;
3691 int (*poll)(struct napi_struct *, int);
3693 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
3694 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
3695 napi_vectors = adapter->num_rx_queues;
3696 poll = &ixgbe_clean_rxtx_many;
3703 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
3704 q_vector = kzalloc(sizeof(struct ixgbe_q_vector), GFP_KERNEL);
3707 q_vector->adapter = adapter;
3708 if (q_vector->txr_count && !q_vector->rxr_count)
3709 q_vector->eitr = adapter->tx_eitr_param;
3711 q_vector->eitr = adapter->rx_eitr_param;
3712 q_vector->v_idx = q_idx;
3713 netif_napi_add(adapter->netdev, &q_vector->napi, (*poll), 64);
3714 adapter->q_vector[q_idx] = q_vector;
3722 q_vector = adapter->q_vector[q_idx];
3723 netif_napi_del(&q_vector->napi);
3725 adapter->q_vector[q_idx] = NULL;
3731 * ixgbe_free_q_vectors - Free memory allocated for interrupt vectors
3732 * @adapter: board private structure to initialize
3734 * This function frees the memory allocated to the q_vectors. In addition if
3735 * NAPI is enabled it will delete any references to the NAPI struct prior
3736 * to freeing the q_vector.
3738 static void ixgbe_free_q_vectors(struct ixgbe_adapter *adapter)
3740 int q_idx, num_q_vectors;
3742 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
3743 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
3747 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
3748 struct ixgbe_q_vector *q_vector = adapter->q_vector[q_idx];
3749 adapter->q_vector[q_idx] = NULL;
3750 netif_napi_del(&q_vector->napi);
3755 static void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter)
3757 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
3758 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
3759 pci_disable_msix(adapter->pdev);
3760 kfree(adapter->msix_entries);
3761 adapter->msix_entries = NULL;
3762 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
3763 adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED;
3764 pci_disable_msi(adapter->pdev);
3770 * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme
3771 * @adapter: board private structure to initialize
3773 * We determine which interrupt scheme to use based on...
3774 * - Kernel support (MSI, MSI-X)
3775 * - which can be user-defined (via MODULE_PARAM)
3776 * - Hardware queue count (num_*_queues)
3777 * - defined by miscellaneous hardware support/features (RSS, etc.)
3779 int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter)
3783 /* Number of supported queues */
3784 ixgbe_set_num_queues(adapter);
3786 err = ixgbe_set_interrupt_capability(adapter);
3788 DPRINTK(PROBE, ERR, "Unable to setup interrupt capabilities\n");
3789 goto err_set_interrupt;
3792 err = ixgbe_alloc_q_vectors(adapter);
3794 DPRINTK(PROBE, ERR, "Unable to allocate memory for queue "
3796 goto err_alloc_q_vectors;
3799 err = ixgbe_alloc_queues(adapter);
3801 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n");
3802 goto err_alloc_queues;
3805 DPRINTK(DRV, INFO, "Multiqueue %s: Rx Queue count = %u, "
3806 "Tx Queue count = %u\n",
3807 (adapter->num_rx_queues > 1) ? "Enabled" :
3808 "Disabled", adapter->num_rx_queues, adapter->num_tx_queues);
3810 set_bit(__IXGBE_DOWN, &adapter->state);
3815 ixgbe_free_q_vectors(adapter);
3816 err_alloc_q_vectors:
3817 ixgbe_reset_interrupt_capability(adapter);
3823 * ixgbe_clear_interrupt_scheme - Clear the current interrupt scheme settings
3824 * @adapter: board private structure to clear interrupt scheme on
3826 * We go through and clear interrupt specific resources and reset the structure
3827 * to pre-load conditions
3829 void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter *adapter)
3831 kfree(adapter->tx_ring);
3832 kfree(adapter->rx_ring);
3833 adapter->tx_ring = NULL;
3834 adapter->rx_ring = NULL;
3836 ixgbe_free_q_vectors(adapter);
3837 ixgbe_reset_interrupt_capability(adapter);
3841 * ixgbe_sfp_timer - worker thread to find a missing module
3842 * @data: pointer to our adapter struct
3844 static void ixgbe_sfp_timer(unsigned long data)
3846 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
3849 * Do the sfp_timer outside of interrupt context due to the
3850 * delays that sfp+ detection requires
3852 schedule_work(&adapter->sfp_task);
3856 * ixgbe_sfp_task - worker thread to find a missing module
3857 * @work: pointer to work_struct containing our data
3859 static void ixgbe_sfp_task(struct work_struct *work)
3861 struct ixgbe_adapter *adapter = container_of(work,
3862 struct ixgbe_adapter,
3864 struct ixgbe_hw *hw = &adapter->hw;
3866 if ((hw->phy.type == ixgbe_phy_nl) &&
3867 (hw->phy.sfp_type == ixgbe_sfp_type_not_present)) {
3868 s32 ret = hw->phy.ops.identify_sfp(hw);
3869 if (ret == IXGBE_ERR_SFP_NOT_PRESENT)
3871 ret = hw->phy.ops.reset(hw);
3872 if (ret == IXGBE_ERR_SFP_NOT_SUPPORTED) {
3873 dev_err(&adapter->pdev->dev, "failed to initialize "
3874 "because an unsupported SFP+ module type "
3876 "Reload the driver after installing a "
3877 "supported module.\n");
3878 unregister_netdev(adapter->netdev);
3880 DPRINTK(PROBE, INFO, "detected SFP+: %d\n",
3883 /* don't need this routine any more */
3884 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
3888 if (test_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state))
3889 mod_timer(&adapter->sfp_timer,
3890 round_jiffies(jiffies + (2 * HZ)));
3894 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
3895 * @adapter: board private structure to initialize
3897 * ixgbe_sw_init initializes the Adapter private data structure.
3898 * Fields are initialized based on PCI device information and
3899 * OS network device settings (MTU size).
3901 static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
3903 struct ixgbe_hw *hw = &adapter->hw;
3904 struct pci_dev *pdev = adapter->pdev;
3906 #ifdef CONFIG_IXGBE_DCB
3908 struct tc_configuration *tc;
3911 /* PCI config space info */
3913 hw->vendor_id = pdev->vendor;
3914 hw->device_id = pdev->device;
3915 hw->revision_id = pdev->revision;
3916 hw->subsystem_vendor_id = pdev->subsystem_vendor;
3917 hw->subsystem_device_id = pdev->subsystem_device;
3919 /* Set capability flags */
3920 rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus());
3921 adapter->ring_feature[RING_F_RSS].indices = rss;
3922 adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
3923 adapter->ring_feature[RING_F_DCB].indices = IXGBE_MAX_DCB_INDICES;
3924 if (hw->mac.type == ixgbe_mac_82598EB) {
3925 if (hw->device_id == IXGBE_DEV_ID_82598AT)
3926 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE;
3927 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82598;
3928 } else if (hw->mac.type == ixgbe_mac_82599EB) {
3929 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599;
3930 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
3931 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
3932 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
3933 adapter->ring_feature[RING_F_FDIR].indices =
3934 IXGBE_MAX_FDIR_INDICES;
3935 adapter->atr_sample_rate = 20;
3936 adapter->fdir_pballoc = 0;
3938 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
3939 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
3940 adapter->ring_feature[RING_F_FCOE].indices = 0;
3941 /* Default traffic class to use for FCoE */
3942 adapter->fcoe.tc = IXGBE_FCOE_DEFTC;
3943 #endif /* IXGBE_FCOE */
3946 #ifdef CONFIG_IXGBE_DCB
3947 /* Configure DCB traffic classes */
3948 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
3949 tc = &adapter->dcb_cfg.tc_config[j];
3950 tc->path[DCB_TX_CONFIG].bwg_id = 0;
3951 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1);
3952 tc->path[DCB_RX_CONFIG].bwg_id = 0;
3953 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1);
3954 tc->dcb_pfc = pfc_disabled;
3956 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100;
3957 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100;
3958 adapter->dcb_cfg.rx_pba_cfg = pba_equal;
3959 adapter->dcb_cfg.pfc_mode_enable = false;
3960 adapter->dcb_cfg.round_robin_enable = false;
3961 adapter->dcb_set_bitmap = 0x00;
3962 ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg,
3963 adapter->ring_feature[RING_F_DCB].indices);
3967 /* default flow control settings */
3968 hw->fc.requested_mode = ixgbe_fc_full;
3969 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */
3971 adapter->last_lfc_mode = hw->fc.current_mode;
3973 hw->fc.high_water = IXGBE_DEFAULT_FCRTH;
3974 hw->fc.low_water = IXGBE_DEFAULT_FCRTL;
3975 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
3976 hw->fc.send_xon = true;
3977 hw->fc.disable_fc_autoneg = false;
3979 /* enable itr by default in dynamic mode */
3980 adapter->rx_itr_setting = 1;
3981 adapter->rx_eitr_param = 20000;
3982 adapter->tx_itr_setting = 1;
3983 adapter->tx_eitr_param = 10000;
3985 /* set defaults for eitr in MegaBytes */
3986 adapter->eitr_low = 10;
3987 adapter->eitr_high = 20;
3989 /* set default ring sizes */
3990 adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
3991 adapter->rx_ring_count = IXGBE_DEFAULT_RXD;
3993 /* initialize eeprom parameters */
3994 if (ixgbe_init_eeprom_params_generic(hw)) {
3995 dev_err(&pdev->dev, "EEPROM initialization failed\n");
3999 /* enable rx csum by default */
4000 adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
4002 set_bit(__IXGBE_DOWN, &adapter->state);
4008 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
4009 * @adapter: board private structure
4010 * @tx_ring: tx descriptor ring (for a specific queue) to setup
4012 * Return 0 on success, negative on failure
4014 int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter,
4015 struct ixgbe_ring *tx_ring)
4017 struct pci_dev *pdev = adapter->pdev;
4020 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
4021 tx_ring->tx_buffer_info = vmalloc(size);
4022 if (!tx_ring->tx_buffer_info)
4024 memset(tx_ring->tx_buffer_info, 0, size);
4026 /* round up to nearest 4K */
4027 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
4028 tx_ring->size = ALIGN(tx_ring->size, 4096);
4030 tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size,
4035 tx_ring->next_to_use = 0;
4036 tx_ring->next_to_clean = 0;
4037 tx_ring->work_limit = tx_ring->count;
4041 vfree(tx_ring->tx_buffer_info);
4042 tx_ring->tx_buffer_info = NULL;
4043 DPRINTK(PROBE, ERR, "Unable to allocate memory for the transmit "
4044 "descriptor ring\n");
4049 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
4050 * @adapter: board private structure
4052 * If this function returns with an error, then it's possible one or
4053 * more of the rings is populated (while the rest are not). It is the
4054 * callers duty to clean those orphaned rings.
4056 * Return 0 on success, negative on failure
4058 static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
4062 for (i = 0; i < adapter->num_tx_queues; i++) {
4063 err = ixgbe_setup_tx_resources(adapter, &adapter->tx_ring[i]);
4066 DPRINTK(PROBE, ERR, "Allocation for Tx Queue %u failed\n", i);
4074 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
4075 * @adapter: board private structure
4076 * @rx_ring: rx descriptor ring (for a specific queue) to setup
4078 * Returns 0 on success, negative on failure
4080 int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter,
4081 struct ixgbe_ring *rx_ring)
4083 struct pci_dev *pdev = adapter->pdev;
4086 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
4087 rx_ring->rx_buffer_info = vmalloc(size);
4088 if (!rx_ring->rx_buffer_info) {
4090 "vmalloc allocation failed for the rx desc ring\n");
4093 memset(rx_ring->rx_buffer_info, 0, size);
4095 /* Round up to nearest 4K */
4096 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
4097 rx_ring->size = ALIGN(rx_ring->size, 4096);
4099 rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, &rx_ring->dma);
4101 if (!rx_ring->desc) {
4103 "Memory allocation failed for the rx desc ring\n");
4104 vfree(rx_ring->rx_buffer_info);
4108 rx_ring->next_to_clean = 0;
4109 rx_ring->next_to_use = 0;
4118 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
4119 * @adapter: board private structure
4121 * If this function returns with an error, then it's possible one or
4122 * more of the rings is populated (while the rest are not). It is the
4123 * callers duty to clean those orphaned rings.
4125 * Return 0 on success, negative on failure
4128 static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
4132 for (i = 0; i < adapter->num_rx_queues; i++) {
4133 err = ixgbe_setup_rx_resources(adapter, &adapter->rx_ring[i]);
4136 DPRINTK(PROBE, ERR, "Allocation for Rx Queue %u failed\n", i);
4144 * ixgbe_free_tx_resources - Free Tx Resources per Queue
4145 * @adapter: board private structure
4146 * @tx_ring: Tx descriptor ring for a specific queue
4148 * Free all transmit software resources
4150 void ixgbe_free_tx_resources(struct ixgbe_adapter *adapter,
4151 struct ixgbe_ring *tx_ring)
4153 struct pci_dev *pdev = adapter->pdev;
4155 ixgbe_clean_tx_ring(adapter, tx_ring);
4157 vfree(tx_ring->tx_buffer_info);
4158 tx_ring->tx_buffer_info = NULL;
4160 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
4162 tx_ring->desc = NULL;
4166 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
4167 * @adapter: board private structure
4169 * Free all transmit software resources
4171 static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter)
4175 for (i = 0; i < adapter->num_tx_queues; i++)
4176 if (adapter->tx_ring[i].desc)
4177 ixgbe_free_tx_resources(adapter, &adapter->tx_ring[i]);
4181 * ixgbe_free_rx_resources - Free Rx Resources
4182 * @adapter: board private structure
4183 * @rx_ring: ring to clean the resources from
4185 * Free all receive software resources
4187 void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter,
4188 struct ixgbe_ring *rx_ring)
4190 struct pci_dev *pdev = adapter->pdev;
4192 ixgbe_clean_rx_ring(adapter, rx_ring);
4194 vfree(rx_ring->rx_buffer_info);
4195 rx_ring->rx_buffer_info = NULL;
4197 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
4199 rx_ring->desc = NULL;
4203 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
4204 * @adapter: board private structure
4206 * Free all receive software resources
4208 static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter)
4212 for (i = 0; i < adapter->num_rx_queues; i++)
4213 if (adapter->rx_ring[i].desc)
4214 ixgbe_free_rx_resources(adapter, &adapter->rx_ring[i]);
4218 * ixgbe_change_mtu - Change the Maximum Transfer Unit
4219 * @netdev: network interface device structure
4220 * @new_mtu: new value for maximum frame size
4222 * Returns 0 on success, negative on failure
4224 static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
4226 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4227 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
4229 /* MTU < 68 is an error and causes problems on some kernels */
4230 if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
4233 DPRINTK(PROBE, INFO, "changing MTU from %d to %d\n",
4234 netdev->mtu, new_mtu);
4235 /* must set new MTU before calling down or up */
4236 netdev->mtu = new_mtu;
4238 if (netif_running(netdev))
4239 ixgbe_reinit_locked(adapter);
4245 * ixgbe_open - Called when a network interface is made active
4246 * @netdev: network interface device structure
4248 * Returns 0 on success, negative value on failure
4250 * The open entry point is called when a network interface is made
4251 * active by the system (IFF_UP). At this point all resources needed
4252 * for transmit and receive operations are allocated, the interrupt
4253 * handler is registered with the OS, the watchdog timer is started,
4254 * and the stack is notified that the interface is ready.
4256 static int ixgbe_open(struct net_device *netdev)
4258 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4261 /* disallow open during test */
4262 if (test_bit(__IXGBE_TESTING, &adapter->state))
4265 netif_carrier_off(netdev);
4267 /* allocate transmit descriptors */
4268 err = ixgbe_setup_all_tx_resources(adapter);
4272 /* allocate receive descriptors */
4273 err = ixgbe_setup_all_rx_resources(adapter);
4277 ixgbe_configure(adapter);
4279 err = ixgbe_request_irq(adapter);
4283 err = ixgbe_up_complete(adapter);
4287 netif_tx_start_all_queues(netdev);
4292 ixgbe_release_hw_control(adapter);
4293 ixgbe_free_irq(adapter);
4296 ixgbe_free_all_rx_resources(adapter);
4298 ixgbe_free_all_tx_resources(adapter);
4299 ixgbe_reset(adapter);
4305 * ixgbe_close - Disables a network interface
4306 * @netdev: network interface device structure
4308 * Returns 0, this is not allowed to fail
4310 * The close entry point is called when an interface is de-activated
4311 * by the OS. The hardware is still under the drivers control, but
4312 * needs to be disabled. A global MAC reset is issued to stop the
4313 * hardware, and all transmit and receive resources are freed.
4315 static int ixgbe_close(struct net_device *netdev)
4317 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4319 ixgbe_down(adapter);
4320 ixgbe_free_irq(adapter);
4322 ixgbe_free_all_tx_resources(adapter);
4323 ixgbe_free_all_rx_resources(adapter);
4325 ixgbe_release_hw_control(adapter);
4331 static int ixgbe_resume(struct pci_dev *pdev)
4333 struct net_device *netdev = pci_get_drvdata(pdev);
4334 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4337 pci_set_power_state(pdev, PCI_D0);
4338 pci_restore_state(pdev);
4340 err = pci_enable_device_mem(pdev);
4342 printk(KERN_ERR "ixgbe: Cannot enable PCI device from "
4346 pci_set_master(pdev);
4348 pci_wake_from_d3(pdev, false);
4350 err = ixgbe_init_interrupt_scheme(adapter);
4352 printk(KERN_ERR "ixgbe: Cannot initialize interrupts for "
4357 ixgbe_reset(adapter);
4359 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
4361 if (netif_running(netdev)) {
4362 err = ixgbe_open(adapter->netdev);
4367 netif_device_attach(netdev);
4371 #endif /* CONFIG_PM */
4373 static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
4375 struct net_device *netdev = pci_get_drvdata(pdev);
4376 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4377 struct ixgbe_hw *hw = &adapter->hw;
4379 u32 wufc = adapter->wol;
4384 netif_device_detach(netdev);
4386 if (netif_running(netdev)) {
4387 ixgbe_down(adapter);
4388 ixgbe_free_irq(adapter);
4389 ixgbe_free_all_tx_resources(adapter);
4390 ixgbe_free_all_rx_resources(adapter);
4392 ixgbe_clear_interrupt_scheme(adapter);
4395 retval = pci_save_state(pdev);
4401 ixgbe_set_rx_mode(netdev);
4403 /* turn on all-multi mode if wake on multicast is enabled */
4404 if (wufc & IXGBE_WUFC_MC) {
4405 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
4406 fctrl |= IXGBE_FCTRL_MPE;
4407 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
4410 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
4411 ctrl |= IXGBE_CTRL_GIO_DIS;
4412 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
4414 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc);
4416 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0);
4417 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0);
4420 if (wufc && hw->mac.type == ixgbe_mac_82599EB)
4421 pci_wake_from_d3(pdev, true);
4423 pci_wake_from_d3(pdev, false);
4425 *enable_wake = !!wufc;
4427 ixgbe_release_hw_control(adapter);
4429 pci_disable_device(pdev);
4435 static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
4440 retval = __ixgbe_shutdown(pdev, &wake);
4445 pci_prepare_to_sleep(pdev);
4447 pci_wake_from_d3(pdev, false);
4448 pci_set_power_state(pdev, PCI_D3hot);
4453 #endif /* CONFIG_PM */
4455 static void ixgbe_shutdown(struct pci_dev *pdev)
4459 __ixgbe_shutdown(pdev, &wake);
4461 if (system_state == SYSTEM_POWER_OFF) {
4462 pci_wake_from_d3(pdev, wake);
4463 pci_set_power_state(pdev, PCI_D3hot);
4468 * ixgbe_update_stats - Update the board statistics counters.
4469 * @adapter: board private structure
4471 void ixgbe_update_stats(struct ixgbe_adapter *adapter)
4473 struct net_device *netdev = adapter->netdev;
4474 struct ixgbe_hw *hw = &adapter->hw;
4476 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
4478 if (hw->mac.type == ixgbe_mac_82599EB) {
4480 for (i = 0; i < 16; i++)
4481 adapter->hw_rx_no_dma_resources +=
4482 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
4483 for (i = 0; i < adapter->num_rx_queues; i++)
4484 rsc_count += adapter->rx_ring[i].rsc_count;
4485 adapter->rsc_count = rsc_count;
4488 adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
4489 for (i = 0; i < 8; i++) {
4490 /* for packet buffers not used, the register should read 0 */
4491 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
4493 adapter->stats.mpc[i] += mpc;
4494 total_mpc += adapter->stats.mpc[i];
4495 if (hw->mac.type == ixgbe_mac_82598EB)
4496 adapter->stats.rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
4497 adapter->stats.qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i));
4498 adapter->stats.qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i));
4499 adapter->stats.qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i));
4500 adapter->stats.qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i));
4501 if (hw->mac.type == ixgbe_mac_82599EB) {
4502 adapter->stats.pxonrxc[i] += IXGBE_READ_REG(hw,
4503 IXGBE_PXONRXCNT(i));
4504 adapter->stats.pxoffrxc[i] += IXGBE_READ_REG(hw,
4505 IXGBE_PXOFFRXCNT(i));
4506 adapter->stats.qprdc[i] += IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
4508 adapter->stats.pxonrxc[i] += IXGBE_READ_REG(hw,
4510 adapter->stats.pxoffrxc[i] += IXGBE_READ_REG(hw,
4513 adapter->stats.pxontxc[i] += IXGBE_READ_REG(hw,
4515 adapter->stats.pxofftxc[i] += IXGBE_READ_REG(hw,
4518 adapter->stats.gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
4519 /* work around hardware counting issue */
4520 adapter->stats.gprc -= missed_rx;
4522 /* 82598 hardware only has a 32 bit counter in the high register */
4523 if (hw->mac.type == ixgbe_mac_82599EB) {
4525 adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCL);
4526 tmp = IXGBE_READ_REG(hw, IXGBE_GORCH) & 0xF; /* 4 high bits of GORC */
4527 adapter->stats.gorc += (tmp << 32);
4528 adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL);
4529 tmp = IXGBE_READ_REG(hw, IXGBE_GOTCH) & 0xF; /* 4 high bits of GOTC */
4530 adapter->stats.gotc += (tmp << 32);
4531 adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORL);
4532 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */
4533 adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
4534 adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
4535 adapter->stats.fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
4536 adapter->stats.fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
4538 adapter->stats.fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC);
4539 adapter->stats.fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC);
4540 adapter->stats.fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC);
4541 adapter->stats.fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC);
4542 adapter->stats.fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC);
4543 adapter->stats.fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC);
4544 #endif /* IXGBE_FCOE */
4546 adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
4547 adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
4548 adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
4549 adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
4550 adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORH);
4552 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
4553 adapter->stats.bprc += bprc;
4554 adapter->stats.mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
4555 if (hw->mac.type == ixgbe_mac_82598EB)
4556 adapter->stats.mprc -= bprc;
4557 adapter->stats.roc += IXGBE_READ_REG(hw, IXGBE_ROC);
4558 adapter->stats.prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64);
4559 adapter->stats.prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127);
4560 adapter->stats.prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255);
4561 adapter->stats.prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
4562 adapter->stats.prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
4563 adapter->stats.prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
4564 adapter->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
4565 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
4566 adapter->stats.lxontxc += lxon;
4567 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
4568 adapter->stats.lxofftxc += lxoff;
4569 adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
4570 adapter->stats.gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
4571 adapter->stats.mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
4573 * 82598 errata - tx of flow control packets is included in tx counters
4575 xon_off_tot = lxon + lxoff;
4576 adapter->stats.gptc -= xon_off_tot;
4577 adapter->stats.mptc -= xon_off_tot;
4578 adapter->stats.gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
4579 adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
4580 adapter->stats.rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
4581 adapter->stats.rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
4582 adapter->stats.tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
4583 adapter->stats.ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
4584 adapter->stats.ptc64 -= xon_off_tot;
4585 adapter->stats.ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
4586 adapter->stats.ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
4587 adapter->stats.ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
4588 adapter->stats.ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
4589 adapter->stats.ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
4590 adapter->stats.bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
4592 /* Fill out the OS statistics structure */
4593 netdev->stats.multicast = adapter->stats.mprc;
4596 netdev->stats.rx_errors = adapter->stats.crcerrs +
4597 adapter->stats.rlec;
4598 netdev->stats.rx_dropped = 0;
4599 netdev->stats.rx_length_errors = adapter->stats.rlec;
4600 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
4601 netdev->stats.rx_missed_errors = total_mpc;
4605 * ixgbe_watchdog - Timer Call-back
4606 * @data: pointer to adapter cast into an unsigned long
4608 static void ixgbe_watchdog(unsigned long data)
4610 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
4611 struct ixgbe_hw *hw = &adapter->hw;
4616 * Do the watchdog outside of interrupt context due to the lovely
4617 * delays that some of the newer hardware requires
4620 if (test_bit(__IXGBE_DOWN, &adapter->state))
4621 goto watchdog_short_circuit;
4623 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
4625 * for legacy and MSI interrupts don't set any bits
4626 * that are enabled for EIAM, because this operation
4627 * would set *both* EIMS and EICS for any bit in EIAM
4629 IXGBE_WRITE_REG(hw, IXGBE_EICS,
4630 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER));
4631 goto watchdog_reschedule;
4634 /* get one bit for every active tx/rx interrupt vector */
4635 for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) {
4636 struct ixgbe_q_vector *qv = adapter->q_vector[i];
4637 if (qv->rxr_count || qv->txr_count)
4638 eics |= ((u64)1 << i);
4641 /* Cause software interrupt to ensure rx rings are cleaned */
4642 ixgbe_irq_rearm_queues(adapter, eics);
4644 watchdog_reschedule:
4645 /* Reset the timer */
4646 mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ));
4648 watchdog_short_circuit:
4649 schedule_work(&adapter->watchdog_task);
4653 * ixgbe_multispeed_fiber_task - worker thread to configure multispeed fiber
4654 * @work: pointer to work_struct containing our data
4656 static void ixgbe_multispeed_fiber_task(struct work_struct *work)
4658 struct ixgbe_adapter *adapter = container_of(work,
4659 struct ixgbe_adapter,
4660 multispeed_fiber_task);
4661 struct ixgbe_hw *hw = &adapter->hw;
4665 adapter->flags |= IXGBE_FLAG_IN_SFP_LINK_TASK;
4666 autoneg = hw->phy.autoneg_advertised;
4667 if ((!autoneg) && (hw->mac.ops.get_link_capabilities))
4668 hw->mac.ops.get_link_capabilities(hw, &autoneg, &negotiation);
4669 if (hw->mac.ops.setup_link)
4670 hw->mac.ops.setup_link(hw, autoneg, negotiation, true);
4671 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
4672 adapter->flags &= ~IXGBE_FLAG_IN_SFP_LINK_TASK;
4676 * ixgbe_sfp_config_module_task - worker thread to configure a new SFP+ module
4677 * @work: pointer to work_struct containing our data
4679 static void ixgbe_sfp_config_module_task(struct work_struct *work)
4681 struct ixgbe_adapter *adapter = container_of(work,
4682 struct ixgbe_adapter,
4683 sfp_config_module_task);
4684 struct ixgbe_hw *hw = &adapter->hw;
4687 adapter->flags |= IXGBE_FLAG_IN_SFP_MOD_TASK;
4689 /* Time for electrical oscillations to settle down */
4691 err = hw->phy.ops.identify_sfp(hw);
4693 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
4694 dev_err(&adapter->pdev->dev, "failed to initialize because "
4695 "an unsupported SFP+ module type was detected.\n"
4696 "Reload the driver after installing a supported "
4698 unregister_netdev(adapter->netdev);
4701 hw->mac.ops.setup_sfp(hw);
4703 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK))
4704 /* This will also work for DA Twinax connections */
4705 schedule_work(&adapter->multispeed_fiber_task);
4706 adapter->flags &= ~IXGBE_FLAG_IN_SFP_MOD_TASK;
4710 * ixgbe_fdir_reinit_task - worker thread to reinit FDIR filter table
4711 * @work: pointer to work_struct containing our data
4713 static void ixgbe_fdir_reinit_task(struct work_struct *work)
4715 struct ixgbe_adapter *adapter = container_of(work,
4716 struct ixgbe_adapter,
4718 struct ixgbe_hw *hw = &adapter->hw;
4721 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
4722 for (i = 0; i < adapter->num_tx_queues; i++)
4723 set_bit(__IXGBE_FDIR_INIT_DONE,
4724 &(adapter->tx_ring[i].reinit_state));
4726 DPRINTK(PROBE, ERR, "failed to finish FDIR re-initialization, "
4727 "ignored adding FDIR ATR filters \n");
4729 /* Done FDIR Re-initialization, enable transmits */
4730 netif_tx_start_all_queues(adapter->netdev);
4734 * ixgbe_watchdog_task - worker thread to bring link up
4735 * @work: pointer to work_struct containing our data
4737 static void ixgbe_watchdog_task(struct work_struct *work)
4739 struct ixgbe_adapter *adapter = container_of(work,
4740 struct ixgbe_adapter,
4742 struct net_device *netdev = adapter->netdev;
4743 struct ixgbe_hw *hw = &adapter->hw;
4744 u32 link_speed = adapter->link_speed;
4745 bool link_up = adapter->link_up;
4747 struct ixgbe_ring *tx_ring;
4748 int some_tx_pending = 0;
4750 adapter->flags |= IXGBE_FLAG_IN_WATCHDOG_TASK;
4752 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) {
4753 hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
4756 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
4757 for (i = 0; i < MAX_TRAFFIC_CLASS; i++)
4758 hw->mac.ops.fc_enable(hw, i);
4760 hw->mac.ops.fc_enable(hw, 0);
4763 hw->mac.ops.fc_enable(hw, 0);
4768 time_after(jiffies, (adapter->link_check_timeout +
4769 IXGBE_TRY_LINK_TIMEOUT))) {
4770 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
4771 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC);
4773 adapter->link_up = link_up;
4774 adapter->link_speed = link_speed;
4778 if (!netif_carrier_ok(netdev)) {
4779 bool flow_rx, flow_tx;
4781 if (hw->mac.type == ixgbe_mac_82599EB) {
4782 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN);
4783 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
4784 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE);
4785 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X);
4787 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
4788 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS);
4789 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE);
4790 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X);
4793 printk(KERN_INFO "ixgbe: %s NIC Link is Up %s, "
4794 "Flow Control: %s\n",
4796 (link_speed == IXGBE_LINK_SPEED_10GB_FULL ?
4798 (link_speed == IXGBE_LINK_SPEED_1GB_FULL ?
4799 "1 Gbps" : "unknown speed")),
4800 ((flow_rx && flow_tx) ? "RX/TX" :
4802 (flow_tx ? "TX" : "None"))));
4804 netif_carrier_on(netdev);
4806 /* Force detection of hung controller */
4807 adapter->detect_tx_hung = true;
4810 adapter->link_up = false;
4811 adapter->link_speed = 0;
4812 if (netif_carrier_ok(netdev)) {
4813 printk(KERN_INFO "ixgbe: %s NIC Link is Down\n",
4815 netif_carrier_off(netdev);
4819 if (!netif_carrier_ok(netdev)) {
4820 for (i = 0; i < adapter->num_tx_queues; i++) {
4821 tx_ring = &adapter->tx_ring[i];
4822 if (tx_ring->next_to_use != tx_ring->next_to_clean) {
4823 some_tx_pending = 1;
4828 if (some_tx_pending) {
4829 /* We've lost link, so the controller stops DMA,
4830 * but we've got queued Tx work that's never going
4831 * to get done, so reset controller to flush Tx.
4832 * (Do the reset outside of interrupt context).
4834 schedule_work(&adapter->reset_task);
4838 ixgbe_update_stats(adapter);
4839 adapter->flags &= ~IXGBE_FLAG_IN_WATCHDOG_TASK;
4842 static int ixgbe_tso(struct ixgbe_adapter *adapter,
4843 struct ixgbe_ring *tx_ring, struct sk_buff *skb,
4844 u32 tx_flags, u8 *hdr_len)
4846 struct ixgbe_adv_tx_context_desc *context_desc;
4849 struct ixgbe_tx_buffer *tx_buffer_info;
4850 u32 vlan_macip_lens = 0, type_tucmd_mlhl;
4851 u32 mss_l4len_idx, l4len;
4853 if (skb_is_gso(skb)) {
4854 if (skb_header_cloned(skb)) {
4855 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
4859 l4len = tcp_hdrlen(skb);
4862 if (skb->protocol == htons(ETH_P_IP)) {
4863 struct iphdr *iph = ip_hdr(skb);
4866 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
4870 adapter->hw_tso_ctxt++;
4871 } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
4872 ipv6_hdr(skb)->payload_len = 0;
4873 tcp_hdr(skb)->check =
4874 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
4875 &ipv6_hdr(skb)->daddr,
4877 adapter->hw_tso6_ctxt++;
4880 i = tx_ring->next_to_use;
4882 tx_buffer_info = &tx_ring->tx_buffer_info[i];
4883 context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
4885 /* VLAN MACLEN IPLEN */
4886 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
4888 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
4889 vlan_macip_lens |= ((skb_network_offset(skb)) <<
4890 IXGBE_ADVTXD_MACLEN_SHIFT);
4891 *hdr_len += skb_network_offset(skb);
4893 (skb_transport_header(skb) - skb_network_header(skb));
4895 (skb_transport_header(skb) - skb_network_header(skb));
4896 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
4897 context_desc->seqnum_seed = 0;
4899 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
4900 type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT |
4901 IXGBE_ADVTXD_DTYP_CTXT);
4903 if (skb->protocol == htons(ETH_P_IP))
4904 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
4905 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
4906 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
4910 (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT);
4911 mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT);
4912 /* use index 1 for TSO */
4913 mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
4914 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
4916 tx_buffer_info->time_stamp = jiffies;
4917 tx_buffer_info->next_to_watch = i;
4920 if (i == tx_ring->count)
4922 tx_ring->next_to_use = i;
4929 static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter,
4930 struct ixgbe_ring *tx_ring,
4931 struct sk_buff *skb, u32 tx_flags)
4933 struct ixgbe_adv_tx_context_desc *context_desc;
4935 struct ixgbe_tx_buffer *tx_buffer_info;
4936 u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0;
4938 if (skb->ip_summed == CHECKSUM_PARTIAL ||
4939 (tx_flags & IXGBE_TX_FLAGS_VLAN)) {
4940 i = tx_ring->next_to_use;
4941 tx_buffer_info = &tx_ring->tx_buffer_info[i];
4942 context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
4944 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
4946 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
4947 vlan_macip_lens |= (skb_network_offset(skb) <<
4948 IXGBE_ADVTXD_MACLEN_SHIFT);
4949 if (skb->ip_summed == CHECKSUM_PARTIAL)
4950 vlan_macip_lens |= (skb_transport_header(skb) -
4951 skb_network_header(skb));
4953 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
4954 context_desc->seqnum_seed = 0;
4956 type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT |
4957 IXGBE_ADVTXD_DTYP_CTXT);
4959 if (skb->ip_summed == CHECKSUM_PARTIAL) {
4960 switch (skb->protocol) {
4961 case cpu_to_be16(ETH_P_IP):
4962 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
4963 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
4965 IXGBE_ADVTXD_TUCMD_L4T_TCP;
4966 else if (ip_hdr(skb)->protocol == IPPROTO_SCTP)
4968 IXGBE_ADVTXD_TUCMD_L4T_SCTP;
4970 case cpu_to_be16(ETH_P_IPV6):
4971 /* XXX what about other V6 headers?? */
4972 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
4974 IXGBE_ADVTXD_TUCMD_L4T_TCP;
4975 else if (ipv6_hdr(skb)->nexthdr == IPPROTO_SCTP)
4977 IXGBE_ADVTXD_TUCMD_L4T_SCTP;
4980 if (unlikely(net_ratelimit())) {
4981 DPRINTK(PROBE, WARNING,
4982 "partial checksum but proto=%x!\n",
4989 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
4990 /* use index zero for tx checksum offload */
4991 context_desc->mss_l4len_idx = 0;
4993 tx_buffer_info->time_stamp = jiffies;
4994 tx_buffer_info->next_to_watch = i;
4996 adapter->hw_csum_tx_good++;
4998 if (i == tx_ring->count)
5000 tx_ring->next_to_use = i;
5008 static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
5009 struct ixgbe_ring *tx_ring,
5010 struct sk_buff *skb, u32 tx_flags,
5013 struct ixgbe_tx_buffer *tx_buffer_info;
5015 unsigned int total = skb->len;
5016 unsigned int offset = 0, size, count = 0, i;
5017 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
5021 i = tx_ring->next_to_use;
5023 if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) {
5024 dev_err(&adapter->pdev->dev, "TX DMA map failed\n");
5028 map = skb_shinfo(skb)->dma_maps;
5030 if (tx_flags & IXGBE_TX_FLAGS_FCOE)
5031 /* excluding fcoe_crc_eof for FCoE */
5032 total -= sizeof(struct fcoe_crc_eof);
5034 len = min(skb_headlen(skb), total);
5036 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5037 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
5039 tx_buffer_info->length = size;
5040 tx_buffer_info->dma = skb_shinfo(skb)->dma_head + offset;
5041 tx_buffer_info->time_stamp = jiffies;
5042 tx_buffer_info->next_to_watch = i;
5051 if (i == tx_ring->count)
5056 for (f = 0; f < nr_frags; f++) {
5057 struct skb_frag_struct *frag;
5059 frag = &skb_shinfo(skb)->frags[f];
5060 len = min((unsigned int)frag->size, total);
5065 if (i == tx_ring->count)
5068 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5069 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
5071 tx_buffer_info->length = size;
5072 tx_buffer_info->dma = map[f] + offset;
5073 tx_buffer_info->time_stamp = jiffies;
5074 tx_buffer_info->next_to_watch = i;
5085 tx_ring->tx_buffer_info[i].skb = skb;
5086 tx_ring->tx_buffer_info[first].next_to_watch = i;
5091 static void ixgbe_tx_queue(struct ixgbe_adapter *adapter,
5092 struct ixgbe_ring *tx_ring,
5093 int tx_flags, int count, u32 paylen, u8 hdr_len)
5095 union ixgbe_adv_tx_desc *tx_desc = NULL;
5096 struct ixgbe_tx_buffer *tx_buffer_info;
5097 u32 olinfo_status = 0, cmd_type_len = 0;
5099 u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS;
5101 cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA;
5103 cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
5105 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
5106 cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE;
5108 if (tx_flags & IXGBE_TX_FLAGS_TSO) {
5109 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
5111 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
5112 IXGBE_ADVTXD_POPTS_SHIFT;
5114 /* use index 1 context for tso */
5115 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
5116 if (tx_flags & IXGBE_TX_FLAGS_IPV4)
5117 olinfo_status |= IXGBE_TXD_POPTS_IXSM <<
5118 IXGBE_ADVTXD_POPTS_SHIFT;
5120 } else if (tx_flags & IXGBE_TX_FLAGS_CSUM)
5121 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
5122 IXGBE_ADVTXD_POPTS_SHIFT;
5124 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
5125 olinfo_status |= IXGBE_ADVTXD_CC;
5126 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
5127 if (tx_flags & IXGBE_TX_FLAGS_FSO)
5128 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
5131 olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
5133 i = tx_ring->next_to_use;
5135 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5136 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
5137 tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma);
5138 tx_desc->read.cmd_type_len =
5139 cpu_to_le32(cmd_type_len | tx_buffer_info->length);
5140 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
5142 if (i == tx_ring->count)
5146 tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd);
5149 * Force memory writes to complete before letting h/w
5150 * know there are new descriptors to fetch. (Only
5151 * applicable for weak-ordered memory model archs,
5156 tx_ring->next_to_use = i;
5157 writel(i, adapter->hw.hw_addr + tx_ring->tail);
5160 static void ixgbe_atr(struct ixgbe_adapter *adapter, struct sk_buff *skb,
5161 int queue, u32 tx_flags)
5163 /* Right now, we support IPv4 only */
5164 struct ixgbe_atr_input atr_input;
5166 struct iphdr *iph = ip_hdr(skb);
5167 struct ethhdr *eth = (struct ethhdr *)skb->data;
5168 u16 vlan_id, src_port, dst_port, flex_bytes;
5169 u32 src_ipv4_addr, dst_ipv4_addr;
5172 /* check if we're UDP or TCP */
5173 if (iph->protocol == IPPROTO_TCP) {
5175 src_port = th->source;
5176 dst_port = th->dest;
5177 l4type |= IXGBE_ATR_L4TYPE_TCP;
5178 /* l4type IPv4 type is 0, no need to assign */
5180 /* Unsupported L4 header, just bail here */
5184 memset(&atr_input, 0, sizeof(struct ixgbe_atr_input));
5186 vlan_id = (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK) >>
5187 IXGBE_TX_FLAGS_VLAN_SHIFT;
5188 src_ipv4_addr = iph->saddr;
5189 dst_ipv4_addr = iph->daddr;
5190 flex_bytes = eth->h_proto;
5192 ixgbe_atr_set_vlan_id_82599(&atr_input, vlan_id);
5193 ixgbe_atr_set_src_port_82599(&atr_input, dst_port);
5194 ixgbe_atr_set_dst_port_82599(&atr_input, src_port);
5195 ixgbe_atr_set_flex_byte_82599(&atr_input, flex_bytes);
5196 ixgbe_atr_set_l4type_82599(&atr_input, l4type);
5197 /* src and dst are inverted, think how the receiver sees them */
5198 ixgbe_atr_set_src_ipv4_82599(&atr_input, dst_ipv4_addr);
5199 ixgbe_atr_set_dst_ipv4_82599(&atr_input, src_ipv4_addr);
5201 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
5202 ixgbe_fdir_add_signature_filter_82599(&adapter->hw, &atr_input, queue);
5205 static int __ixgbe_maybe_stop_tx(struct net_device *netdev,
5206 struct ixgbe_ring *tx_ring, int size)
5208 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5210 netif_stop_subqueue(netdev, tx_ring->queue_index);
5211 /* Herbert's original patch had:
5212 * smp_mb__after_netif_stop_queue();
5213 * but since that doesn't exist yet, just open code it. */
5216 /* We need to check again in a case another CPU has just
5217 * made room available. */
5218 if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
5221 /* A reprieve! - use start_queue because it doesn't call schedule */
5222 netif_start_subqueue(netdev, tx_ring->queue_index);
5223 ++adapter->restart_queue;
5227 static int ixgbe_maybe_stop_tx(struct net_device *netdev,
5228 struct ixgbe_ring *tx_ring, int size)
5230 if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
5232 return __ixgbe_maybe_stop_tx(netdev, tx_ring, size);
5235 static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb)
5237 struct ixgbe_adapter *adapter = netdev_priv(dev);
5239 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)
5240 return smp_processor_id();
5242 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
5243 return (skb->vlan_tci & IXGBE_TX_FLAGS_VLAN_PRIO_MASK) >> 13;
5245 return skb_tx_hash(dev, skb);
5248 static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
5249 struct net_device *netdev)
5251 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5252 struct ixgbe_ring *tx_ring;
5254 unsigned int tx_flags = 0;
5260 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
5261 tx_flags |= vlan_tx_tag_get(skb);
5262 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
5263 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
5264 tx_flags |= (skb->queue_mapping << 13);
5266 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
5267 tx_flags |= IXGBE_TX_FLAGS_VLAN;
5268 } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
5269 if (skb->priority != TC_PRIO_CONTROL) {
5270 tx_flags |= (skb->queue_mapping << 13);
5271 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
5272 tx_flags |= IXGBE_TX_FLAGS_VLAN;
5274 skb->queue_mapping =
5275 adapter->ring_feature[RING_F_DCB].indices-1;
5279 r_idx = skb->queue_mapping;
5280 tx_ring = &adapter->tx_ring[r_idx];
5282 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
5283 (skb->protocol == htons(ETH_P_FCOE))) {
5284 tx_flags |= IXGBE_TX_FLAGS_FCOE;
5286 r_idx = smp_processor_id();
5287 r_idx &= (adapter->ring_feature[RING_F_FCOE].indices - 1);
5288 r_idx += adapter->ring_feature[RING_F_FCOE].mask;
5289 tx_ring = &adapter->tx_ring[r_idx];
5292 /* four things can cause us to need a context descriptor */
5293 if (skb_is_gso(skb) ||
5294 (skb->ip_summed == CHECKSUM_PARTIAL) ||
5295 (tx_flags & IXGBE_TX_FLAGS_VLAN) ||
5296 (tx_flags & IXGBE_TX_FLAGS_FCOE))
5299 count += TXD_USE_COUNT(skb_headlen(skb));
5300 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
5301 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
5303 if (ixgbe_maybe_stop_tx(netdev, tx_ring, count)) {
5305 return NETDEV_TX_BUSY;
5308 first = tx_ring->next_to_use;
5309 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
5311 /* setup tx offload for FCoE */
5312 tso = ixgbe_fso(adapter, tx_ring, skb, tx_flags, &hdr_len);
5314 dev_kfree_skb_any(skb);
5315 return NETDEV_TX_OK;
5318 tx_flags |= IXGBE_TX_FLAGS_FSO;
5319 #endif /* IXGBE_FCOE */
5321 if (skb->protocol == htons(ETH_P_IP))
5322 tx_flags |= IXGBE_TX_FLAGS_IPV4;
5323 tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len);
5325 dev_kfree_skb_any(skb);
5326 return NETDEV_TX_OK;
5330 tx_flags |= IXGBE_TX_FLAGS_TSO;
5331 else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) &&
5332 (skb->ip_summed == CHECKSUM_PARTIAL))
5333 tx_flags |= IXGBE_TX_FLAGS_CSUM;
5336 count = ixgbe_tx_map(adapter, tx_ring, skb, tx_flags, first);
5338 /* add the ATR filter if ATR is on */
5339 if (tx_ring->atr_sample_rate) {
5340 ++tx_ring->atr_count;
5341 if ((tx_ring->atr_count >= tx_ring->atr_sample_rate) &&
5342 test_bit(__IXGBE_FDIR_INIT_DONE,
5343 &tx_ring->reinit_state)) {
5344 ixgbe_atr(adapter, skb, tx_ring->queue_index,
5346 tx_ring->atr_count = 0;
5349 ixgbe_tx_queue(adapter, tx_ring, tx_flags, count, skb->len,
5351 ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED);
5354 dev_kfree_skb_any(skb);
5355 tx_ring->tx_buffer_info[first].time_stamp = 0;
5356 tx_ring->next_to_use = first;
5359 return NETDEV_TX_OK;
5363 * ixgbe_get_stats - Get System Network Statistics
5364 * @netdev: network interface device structure
5366 * Returns the address of the device statistics structure.
5367 * The statistics are actually updated from the timer callback.
5369 static struct net_device_stats *ixgbe_get_stats(struct net_device *netdev)
5371 /* only return the current stats */
5372 return &netdev->stats;
5376 * ixgbe_set_mac - Change the Ethernet Address of the NIC
5377 * @netdev: network interface device structure
5378 * @p: pointer to an address structure
5380 * Returns 0 on success, negative on failure
5382 static int ixgbe_set_mac(struct net_device *netdev, void *p)
5384 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5385 struct ixgbe_hw *hw = &adapter->hw;
5386 struct sockaddr *addr = p;
5388 if (!is_valid_ether_addr(addr->sa_data))
5389 return -EADDRNOTAVAIL;
5391 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
5392 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
5394 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
5400 ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr)
5402 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5403 struct ixgbe_hw *hw = &adapter->hw;
5407 if (prtad != hw->phy.mdio.prtad)
5409 rc = hw->phy.ops.read_reg(hw, addr, devad, &value);
5415 static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad,
5416 u16 addr, u16 value)
5418 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5419 struct ixgbe_hw *hw = &adapter->hw;
5421 if (prtad != hw->phy.mdio.prtad)
5423 return hw->phy.ops.write_reg(hw, addr, devad, value);
5426 static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
5428 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5430 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd);
5434 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
5436 * @netdev: network interface device structure
5438 * Returns non-zero on failure
5440 static int ixgbe_add_sanmac_netdev(struct net_device *dev)
5443 struct ixgbe_adapter *adapter = netdev_priv(dev);
5444 struct ixgbe_mac_info *mac = &adapter->hw.mac;
5446 if (is_valid_ether_addr(mac->san_addr)) {
5448 err = dev_addr_add(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
5455 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
5457 * @netdev: network interface device structure
5459 * Returns non-zero on failure
5461 static int ixgbe_del_sanmac_netdev(struct net_device *dev)
5464 struct ixgbe_adapter *adapter = netdev_priv(dev);
5465 struct ixgbe_mac_info *mac = &adapter->hw.mac;
5467 if (is_valid_ether_addr(mac->san_addr)) {
5469 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
5475 #ifdef CONFIG_NET_POLL_CONTROLLER
5477 * Polling 'interrupt' - used by things like netconsole to send skbs
5478 * without having to re-enable interrupts. It's not called while
5479 * the interrupt routine is executing.
5481 static void ixgbe_netpoll(struct net_device *netdev)
5483 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5486 adapter->flags |= IXGBE_FLAG_IN_NETPOLL;
5487 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
5488 int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
5489 for (i = 0; i < num_q_vectors; i++) {
5490 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
5491 ixgbe_msix_clean_many(0, q_vector);
5494 ixgbe_intr(adapter->pdev->irq, netdev);
5496 adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL;
5500 static const struct net_device_ops ixgbe_netdev_ops = {
5501 .ndo_open = ixgbe_open,
5502 .ndo_stop = ixgbe_close,
5503 .ndo_start_xmit = ixgbe_xmit_frame,
5504 .ndo_select_queue = ixgbe_select_queue,
5505 .ndo_get_stats = ixgbe_get_stats,
5506 .ndo_set_rx_mode = ixgbe_set_rx_mode,
5507 .ndo_set_multicast_list = ixgbe_set_rx_mode,
5508 .ndo_validate_addr = eth_validate_addr,
5509 .ndo_set_mac_address = ixgbe_set_mac,
5510 .ndo_change_mtu = ixgbe_change_mtu,
5511 .ndo_tx_timeout = ixgbe_tx_timeout,
5512 .ndo_vlan_rx_register = ixgbe_vlan_rx_register,
5513 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
5514 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
5515 .ndo_do_ioctl = ixgbe_ioctl,
5516 #ifdef CONFIG_NET_POLL_CONTROLLER
5517 .ndo_poll_controller = ixgbe_netpoll,
5520 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get,
5521 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put,
5522 .ndo_fcoe_enable = ixgbe_fcoe_enable,
5523 .ndo_fcoe_disable = ixgbe_fcoe_disable,
5524 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn,
5525 #endif /* IXGBE_FCOE */
5529 * ixgbe_probe - Device Initialization Routine
5530 * @pdev: PCI device information struct
5531 * @ent: entry in ixgbe_pci_tbl
5533 * Returns 0 on success, negative on failure
5535 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
5536 * The OS initialization, configuring of the adapter private structure,
5537 * and a hardware reset occur.
5539 static int __devinit ixgbe_probe(struct pci_dev *pdev,
5540 const struct pci_device_id *ent)
5542 struct net_device *netdev;
5543 struct ixgbe_adapter *adapter = NULL;
5544 struct ixgbe_hw *hw;
5545 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
5546 static int cards_found;
5547 int i, err, pci_using_dac;
5553 err = pci_enable_device_mem(pdev);
5557 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
5558 !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
5561 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5563 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
5565 dev_err(&pdev->dev, "No usable DMA "
5566 "configuration, aborting\n");
5573 err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
5574 IORESOURCE_MEM), ixgbe_driver_name);
5577 "pci_request_selected_regions failed 0x%x\n", err);
5581 pci_enable_pcie_error_reporting(pdev);
5583 pci_set_master(pdev);
5584 pci_save_state(pdev);
5586 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), MAX_TX_QUEUES);
5589 goto err_alloc_etherdev;
5592 SET_NETDEV_DEV(netdev, &pdev->dev);
5594 pci_set_drvdata(pdev, netdev);
5595 adapter = netdev_priv(netdev);
5597 adapter->netdev = netdev;
5598 adapter->pdev = pdev;
5601 adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
5603 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
5604 pci_resource_len(pdev, 0));
5610 for (i = 1; i <= 5; i++) {
5611 if (pci_resource_len(pdev, i) == 0)
5615 netdev->netdev_ops = &ixgbe_netdev_ops;
5616 ixgbe_set_ethtool_ops(netdev);
5617 netdev->watchdog_timeo = 5 * HZ;
5618 strcpy(netdev->name, pci_name(pdev));
5620 adapter->bd_number = cards_found;
5623 memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
5624 hw->mac.type = ii->mac;
5627 memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops));
5628 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
5629 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
5630 if (!(eec & (1 << 8)))
5631 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
5634 memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops));
5635 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
5636 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
5637 hw->phy.mdio.prtad = MDIO_PRTAD_NONE;
5638 hw->phy.mdio.mmds = 0;
5639 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
5640 hw->phy.mdio.dev = netdev;
5641 hw->phy.mdio.mdio_read = ixgbe_mdio_read;
5642 hw->phy.mdio.mdio_write = ixgbe_mdio_write;
5644 /* set up this timer and work struct before calling get_invariants
5645 * which might start the timer
5647 init_timer(&adapter->sfp_timer);
5648 adapter->sfp_timer.function = &ixgbe_sfp_timer;
5649 adapter->sfp_timer.data = (unsigned long) adapter;
5651 INIT_WORK(&adapter->sfp_task, ixgbe_sfp_task);
5653 /* multispeed fiber has its own tasklet, called from GPI SDP1 context */
5654 INIT_WORK(&adapter->multispeed_fiber_task, ixgbe_multispeed_fiber_task);
5656 /* a new SFP+ module arrival, called from GPI SDP2 context */
5657 INIT_WORK(&adapter->sfp_config_module_task,
5658 ixgbe_sfp_config_module_task);
5660 ii->get_invariants(hw);
5662 /* setup the private structure */
5663 err = ixgbe_sw_init(adapter);
5668 * If there is a fan on this device and it has failed log the
5671 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
5672 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
5673 if (esdp & IXGBE_ESDP_SDP1)
5674 DPRINTK(PROBE, CRIT,
5675 "Fan has stopped, replace the adapter\n");
5678 /* reset_hw fills in the perm_addr as well */
5679 err = hw->mac.ops.reset_hw(hw);
5680 if (err == IXGBE_ERR_SFP_NOT_PRESENT &&
5681 hw->mac.type == ixgbe_mac_82598EB) {
5683 * Start a kernel thread to watch for a module to arrive.
5684 * Only do this for 82598, since 82599 will generate
5685 * interrupts on module arrival.
5687 set_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
5688 mod_timer(&adapter->sfp_timer,
5689 round_jiffies(jiffies + (2 * HZ)));
5691 } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
5692 dev_err(&adapter->pdev->dev, "failed to initialize because "
5693 "an unsupported SFP+ module type was detected.\n"
5694 "Reload the driver after installing a supported "
5698 dev_err(&adapter->pdev->dev, "HW Init failed: %d\n", err);
5702 netdev->features = NETIF_F_SG |
5704 NETIF_F_HW_VLAN_TX |
5705 NETIF_F_HW_VLAN_RX |
5706 NETIF_F_HW_VLAN_FILTER;
5708 netdev->features |= NETIF_F_IPV6_CSUM;
5709 netdev->features |= NETIF_F_TSO;
5710 netdev->features |= NETIF_F_TSO6;
5711 netdev->features |= NETIF_F_GRO;
5713 if (adapter->hw.mac.type == ixgbe_mac_82599EB)
5714 netdev->features |= NETIF_F_SCTP_CSUM;
5716 netdev->vlan_features |= NETIF_F_TSO;
5717 netdev->vlan_features |= NETIF_F_TSO6;
5718 netdev->vlan_features |= NETIF_F_IP_CSUM;
5719 netdev->vlan_features |= NETIF_F_IPV6_CSUM;
5720 netdev->vlan_features |= NETIF_F_SG;
5722 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
5723 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
5725 #ifdef CONFIG_IXGBE_DCB
5726 netdev->dcbnl_ops = &dcbnl_ops;
5730 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
5731 if (hw->mac.ops.get_device_caps) {
5732 hw->mac.ops.get_device_caps(hw, &device_caps);
5733 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)
5734 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
5737 #endif /* IXGBE_FCOE */
5739 netdev->features |= NETIF_F_HIGHDMA;
5741 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
5742 netdev->features |= NETIF_F_LRO;
5744 /* make sure the EEPROM is good */
5745 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
5746 dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n");
5751 memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len);
5752 memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len);
5754 if (ixgbe_validate_mac_addr(netdev->perm_addr)) {
5755 dev_err(&pdev->dev, "invalid MAC address\n");
5760 init_timer(&adapter->watchdog_timer);
5761 adapter->watchdog_timer.function = &ixgbe_watchdog;
5762 adapter->watchdog_timer.data = (unsigned long)adapter;
5764 INIT_WORK(&adapter->reset_task, ixgbe_reset_task);
5765 INIT_WORK(&adapter->watchdog_task, ixgbe_watchdog_task);
5767 err = ixgbe_init_interrupt_scheme(adapter);
5771 switch (pdev->device) {
5772 case IXGBE_DEV_ID_82599_KX4:
5773 adapter->wol = (IXGBE_WUFC_MAG | IXGBE_WUFC_EX |
5774 IXGBE_WUFC_MC | IXGBE_WUFC_BC);
5775 /* Enable ACPI wakeup in GRC */
5776 IXGBE_WRITE_REG(hw, IXGBE_GRC,
5777 (IXGBE_READ_REG(hw, IXGBE_GRC) & ~IXGBE_GRC_APME));
5783 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
5785 /* pick up the PCI bus settings for reporting later */
5786 hw->mac.ops.get_bus_info(hw);
5788 /* print bus type/speed/width info */
5789 dev_info(&pdev->dev, "(PCI Express:%s:%s) %pM\n",
5790 ((hw->bus.speed == ixgbe_bus_speed_5000) ? "5.0Gb/s":
5791 (hw->bus.speed == ixgbe_bus_speed_2500) ? "2.5Gb/s":"Unknown"),
5792 ((hw->bus.width == ixgbe_bus_width_pcie_x8) ? "Width x8" :
5793 (hw->bus.width == ixgbe_bus_width_pcie_x4) ? "Width x4" :
5794 (hw->bus.width == ixgbe_bus_width_pcie_x1) ? "Width x1" :
5797 ixgbe_read_pba_num_generic(hw, &part_num);
5798 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present)
5799 dev_info(&pdev->dev, "MAC: %d, PHY: %d, SFP+: %d, PBA No: %06x-%03x\n",
5800 hw->mac.type, hw->phy.type, hw->phy.sfp_type,
5801 (part_num >> 8), (part_num & 0xff));
5803 dev_info(&pdev->dev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
5804 hw->mac.type, hw->phy.type,
5805 (part_num >> 8), (part_num & 0xff));
5807 if (hw->bus.width <= ixgbe_bus_width_pcie_x4) {
5808 dev_warn(&pdev->dev, "PCI-Express bandwidth available for "
5809 "this card is not sufficient for optimal "
5811 dev_warn(&pdev->dev, "For optimal performance a x8 "
5812 "PCI-Express slot is required.\n");
5815 /* save off EEPROM version number */
5816 hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version);
5818 /* reset the hardware with the new settings */
5819 err = hw->mac.ops.start_hw(hw);
5821 if (err == IXGBE_ERR_EEPROM_VERSION) {
5822 /* We are running on a pre-production device, log a warning */
5823 dev_warn(&pdev->dev, "This device is a pre-production "
5824 "adapter/LOM. Please be aware there may be issues "
5825 "associated with your hardware. If you are "
5826 "experiencing problems please contact your Intel or "
5827 "hardware representative who provided you with this "
5830 strcpy(netdev->name, "eth%d");
5831 err = register_netdev(netdev);
5835 /* carrier off reporting is important to ethtool even BEFORE open */
5836 netif_carrier_off(netdev);
5838 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
5839 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
5840 INIT_WORK(&adapter->fdir_reinit_task, ixgbe_fdir_reinit_task);
5842 #ifdef CONFIG_IXGBE_DCA
5843 if (dca_add_requester(&pdev->dev) == 0) {
5844 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
5845 ixgbe_setup_dca(adapter);
5848 /* add san mac addr to netdev */
5849 ixgbe_add_sanmac_netdev(netdev);
5851 dev_info(&pdev->dev, "Intel(R) 10 Gigabit Network Connection\n");
5856 ixgbe_release_hw_control(adapter);
5857 ixgbe_clear_interrupt_scheme(adapter);
5860 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
5861 del_timer_sync(&adapter->sfp_timer);
5862 cancel_work_sync(&adapter->sfp_task);
5863 cancel_work_sync(&adapter->multispeed_fiber_task);
5864 cancel_work_sync(&adapter->sfp_config_module_task);
5865 iounmap(hw->hw_addr);
5867 free_netdev(netdev);
5869 pci_release_selected_regions(pdev, pci_select_bars(pdev,
5873 pci_disable_device(pdev);
5878 * ixgbe_remove - Device Removal Routine
5879 * @pdev: PCI device information struct
5881 * ixgbe_remove is called by the PCI subsystem to alert the driver
5882 * that it should release a PCI device. The could be caused by a
5883 * Hot-Plug event, or because the driver is going to be removed from
5886 static void __devexit ixgbe_remove(struct pci_dev *pdev)
5888 struct net_device *netdev = pci_get_drvdata(pdev);
5889 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5891 set_bit(__IXGBE_DOWN, &adapter->state);
5892 /* clear the module not found bit to make sure the worker won't
5895 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
5896 del_timer_sync(&adapter->watchdog_timer);
5898 del_timer_sync(&adapter->sfp_timer);
5899 cancel_work_sync(&adapter->watchdog_task);
5900 cancel_work_sync(&adapter->sfp_task);
5901 cancel_work_sync(&adapter->multispeed_fiber_task);
5902 cancel_work_sync(&adapter->sfp_config_module_task);
5903 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
5904 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
5905 cancel_work_sync(&adapter->fdir_reinit_task);
5906 flush_scheduled_work();
5908 #ifdef CONFIG_IXGBE_DCA
5909 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
5910 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
5911 dca_remove_requester(&pdev->dev);
5912 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
5917 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
5918 ixgbe_cleanup_fcoe(adapter);
5920 #endif /* IXGBE_FCOE */
5922 /* remove the added san mac */
5923 ixgbe_del_sanmac_netdev(netdev);
5925 if (netdev->reg_state == NETREG_REGISTERED)
5926 unregister_netdev(netdev);
5928 ixgbe_clear_interrupt_scheme(adapter);
5930 ixgbe_release_hw_control(adapter);
5932 iounmap(adapter->hw.hw_addr);
5933 pci_release_selected_regions(pdev, pci_select_bars(pdev,
5936 DPRINTK(PROBE, INFO, "complete\n");
5938 free_netdev(netdev);
5940 pci_disable_pcie_error_reporting(pdev);
5942 pci_disable_device(pdev);
5946 * ixgbe_io_error_detected - called when PCI error is detected
5947 * @pdev: Pointer to PCI device
5948 * @state: The current pci connection state
5950 * This function is called after a PCI bus error affecting
5951 * this device has been detected.
5953 static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
5954 pci_channel_state_t state)
5956 struct net_device *netdev = pci_get_drvdata(pdev);
5957 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5959 netif_device_detach(netdev);
5961 if (state == pci_channel_io_perm_failure)
5962 return PCI_ERS_RESULT_DISCONNECT;
5964 if (netif_running(netdev))
5965 ixgbe_down(adapter);
5966 pci_disable_device(pdev);
5968 /* Request a slot reset. */
5969 return PCI_ERS_RESULT_NEED_RESET;
5973 * ixgbe_io_slot_reset - called after the pci bus has been reset.
5974 * @pdev: Pointer to PCI device
5976 * Restart the card from scratch, as if from a cold-boot.
5978 static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
5980 struct net_device *netdev = pci_get_drvdata(pdev);
5981 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5982 pci_ers_result_t result;
5985 if (pci_enable_device_mem(pdev)) {
5987 "Cannot re-enable PCI device after reset.\n");
5988 result = PCI_ERS_RESULT_DISCONNECT;
5990 pci_set_master(pdev);
5991 pci_restore_state(pdev);
5993 pci_wake_from_d3(pdev, false);
5995 ixgbe_reset(adapter);
5996 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
5997 result = PCI_ERS_RESULT_RECOVERED;
6000 err = pci_cleanup_aer_uncorrect_error_status(pdev);
6003 "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n", err);
6004 /* non-fatal, continue */
6011 * ixgbe_io_resume - called when traffic can start flowing again.
6012 * @pdev: Pointer to PCI device
6014 * This callback is called when the error recovery driver tells us that
6015 * its OK to resume normal operation.
6017 static void ixgbe_io_resume(struct pci_dev *pdev)
6019 struct net_device *netdev = pci_get_drvdata(pdev);
6020 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6022 if (netif_running(netdev)) {
6023 if (ixgbe_up(adapter)) {
6024 DPRINTK(PROBE, INFO, "ixgbe_up failed after reset\n");
6029 netif_device_attach(netdev);
6032 static struct pci_error_handlers ixgbe_err_handler = {
6033 .error_detected = ixgbe_io_error_detected,
6034 .slot_reset = ixgbe_io_slot_reset,
6035 .resume = ixgbe_io_resume,
6038 static struct pci_driver ixgbe_driver = {
6039 .name = ixgbe_driver_name,
6040 .id_table = ixgbe_pci_tbl,
6041 .probe = ixgbe_probe,
6042 .remove = __devexit_p(ixgbe_remove),
6044 .suspend = ixgbe_suspend,
6045 .resume = ixgbe_resume,
6047 .shutdown = ixgbe_shutdown,
6048 .err_handler = &ixgbe_err_handler
6052 * ixgbe_init_module - Driver Registration Routine
6054 * ixgbe_init_module is the first routine called when the driver is
6055 * loaded. All it does is register with the PCI subsystem.
6057 static int __init ixgbe_init_module(void)
6060 printk(KERN_INFO "%s: %s - version %s\n", ixgbe_driver_name,
6061 ixgbe_driver_string, ixgbe_driver_version);
6063 printk(KERN_INFO "%s: %s\n", ixgbe_driver_name, ixgbe_copyright);
6065 #ifdef CONFIG_IXGBE_DCA
6066 dca_register_notify(&dca_notifier);
6069 ret = pci_register_driver(&ixgbe_driver);
6073 module_init(ixgbe_init_module);
6076 * ixgbe_exit_module - Driver Exit Cleanup Routine
6078 * ixgbe_exit_module is called just before the driver is removed
6081 static void __exit ixgbe_exit_module(void)
6083 #ifdef CONFIG_IXGBE_DCA
6084 dca_unregister_notify(&dca_notifier);
6086 pci_unregister_driver(&ixgbe_driver);
6089 #ifdef CONFIG_IXGBE_DCA
6090 static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event,
6095 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event,
6096 __ixgbe_notify_dca);
6098 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
6101 #endif /* CONFIG_IXGBE_DCA */
6104 * ixgbe_get_hw_dev_name - return device name string
6105 * used by hardware layer to print debugging information
6107 char *ixgbe_get_hw_dev_name(struct ixgbe_hw *hw)
6109 struct ixgbe_adapter *adapter = hw->back;
6110 return adapter->netdev->name;
6114 module_exit(ixgbe_exit_module);