1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2010 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 <linux/slab.h>
40 #include <net/checksum.h>
41 #include <net/ip6_checksum.h>
42 #include <linux/ethtool.h>
43 #include <linux/if_vlan.h>
44 #include <scsi/fc/fc_fcoe.h>
47 #include "ixgbe_common.h"
48 #include "ixgbe_dcb_82599.h"
49 #include "ixgbe_sriov.h"
51 char ixgbe_driver_name[] = "ixgbe";
52 static const char ixgbe_driver_string[] =
53 "Intel(R) 10 Gigabit PCI Express Network Driver";
55 #define DRV_VERSION "2.0.84-k2"
56 const char ixgbe_driver_version[] = DRV_VERSION;
57 static char ixgbe_copyright[] = "Copyright (c) 1999-2010 Intel Corporation.";
59 static const struct ixgbe_info *ixgbe_info_tbl[] = {
60 [board_82598] = &ixgbe_82598_info,
61 [board_82599] = &ixgbe_82599_info,
64 /* ixgbe_pci_tbl - PCI Device ID Table
66 * Wildcard entries (PCI_ANY_ID) should come last
67 * Last entry must be all 0s
69 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
70 * Class, Class Mask, private data (not used) }
72 static DEFINE_PCI_DEVICE_TABLE(ixgbe_pci_tbl) = {
73 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598),
75 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT),
77 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT),
79 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT),
81 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2),
83 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4),
85 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT),
87 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT),
89 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM),
91 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR),
93 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM),
95 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX),
97 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4),
99 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM),
101 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR),
103 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP),
105 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM),
107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ),
109 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4),
111 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM),
113 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE),
116 /* required last entry */
119 MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl);
121 #ifdef CONFIG_IXGBE_DCA
122 static int ixgbe_notify_dca(struct notifier_block *, unsigned long event,
124 static struct notifier_block dca_notifier = {
125 .notifier_call = ixgbe_notify_dca,
131 #ifdef CONFIG_PCI_IOV
132 static unsigned int max_vfs;
133 module_param(max_vfs, uint, 0);
134 MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate "
135 "per physical function");
136 #endif /* CONFIG_PCI_IOV */
138 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
139 MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
140 MODULE_LICENSE("GPL");
141 MODULE_VERSION(DRV_VERSION);
143 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
145 static inline void ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
147 struct ixgbe_hw *hw = &adapter->hw;
152 #ifdef CONFIG_PCI_IOV
153 /* disable iov and allow time for transactions to clear */
154 pci_disable_sriov(adapter->pdev);
157 /* turn off device IOV mode */
158 gcr = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
159 gcr &= ~(IXGBE_GCR_EXT_SRIOV);
160 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr);
161 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
162 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
163 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
165 /* set default pool back to 0 */
166 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
167 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
168 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
170 /* take a breather then clean up driver data */
173 kfree(adapter->vfinfo);
174 adapter->vfinfo = NULL;
176 adapter->num_vfs = 0;
177 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
180 struct ixgbe_reg_info {
185 static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = {
187 /* General Registers */
188 {IXGBE_CTRL, "CTRL"},
189 {IXGBE_STATUS, "STATUS"},
190 {IXGBE_CTRL_EXT, "CTRL_EXT"},
192 /* Interrupt Registers */
193 {IXGBE_EICR, "EICR"},
196 {IXGBE_SRRCTL(0), "SRRCTL"},
197 {IXGBE_DCA_RXCTRL(0), "DRXCTL"},
198 {IXGBE_RDLEN(0), "RDLEN"},
199 {IXGBE_RDH(0), "RDH"},
200 {IXGBE_RDT(0), "RDT"},
201 {IXGBE_RXDCTL(0), "RXDCTL"},
202 {IXGBE_RDBAL(0), "RDBAL"},
203 {IXGBE_RDBAH(0), "RDBAH"},
206 {IXGBE_TDBAL(0), "TDBAL"},
207 {IXGBE_TDBAH(0), "TDBAH"},
208 {IXGBE_TDLEN(0), "TDLEN"},
209 {IXGBE_TDH(0), "TDH"},
210 {IXGBE_TDT(0), "TDT"},
211 {IXGBE_TXDCTL(0), "TXDCTL"},
213 /* List Terminator */
219 * ixgbe_regdump - register printout routine
221 static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo)
227 switch (reginfo->ofs) {
228 case IXGBE_SRRCTL(0):
229 for (i = 0; i < 64; i++)
230 regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i));
232 case IXGBE_DCA_RXCTRL(0):
233 for (i = 0; i < 64; i++)
234 regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
237 for (i = 0; i < 64; i++)
238 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i));
241 for (i = 0; i < 64; i++)
242 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i));
245 for (i = 0; i < 64; i++)
246 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i));
248 case IXGBE_RXDCTL(0):
249 for (i = 0; i < 64; i++)
250 regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
253 for (i = 0; i < 64; i++)
254 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i));
257 for (i = 0; i < 64; i++)
258 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i));
261 for (i = 0; i < 64; i++)
262 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i));
265 for (i = 0; i < 64; i++)
266 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i));
269 for (i = 0; i < 64; i++)
270 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i));
273 for (i = 0; i < 64; i++)
274 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i));
277 for (i = 0; i < 64; i++)
278 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i));
280 case IXGBE_TXDCTL(0):
281 for (i = 0; i < 64; i++)
282 regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
285 printk(KERN_INFO "%-15s %08x\n", reginfo->name,
286 IXGBE_READ_REG(hw, reginfo->ofs));
290 for (i = 0; i < 8; i++) {
291 snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i*8, i*8+7);
292 printk(KERN_ERR "%-15s ", rname);
293 for (j = 0; j < 8; j++)
294 printk(KERN_CONT "%08x ", regs[i*8+j]);
295 printk(KERN_CONT "\n");
301 * ixgbe_dump - Print registers, tx-rings and rx-rings
303 static void ixgbe_dump(struct ixgbe_adapter *adapter)
305 struct net_device *netdev = adapter->netdev;
306 struct ixgbe_hw *hw = &adapter->hw;
307 struct ixgbe_reg_info *reginfo;
309 struct ixgbe_ring *tx_ring;
310 struct ixgbe_tx_buffer *tx_buffer_info;
311 union ixgbe_adv_tx_desc *tx_desc;
312 struct my_u0 { u64 a; u64 b; } *u0;
313 struct ixgbe_ring *rx_ring;
314 union ixgbe_adv_rx_desc *rx_desc;
315 struct ixgbe_rx_buffer *rx_buffer_info;
319 if (!netif_msg_hw(adapter))
322 /* Print netdevice Info */
324 dev_info(&adapter->pdev->dev, "Net device Info\n");
325 printk(KERN_INFO "Device Name state "
326 "trans_start last_rx\n");
327 printk(KERN_INFO "%-15s %016lX %016lX %016lX\n",
334 /* Print Registers */
335 dev_info(&adapter->pdev->dev, "Register Dump\n");
336 printk(KERN_INFO " Register Name Value\n");
337 for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl;
338 reginfo->name; reginfo++) {
339 ixgbe_regdump(hw, reginfo);
342 /* Print TX Ring Summary */
343 if (!netdev || !netif_running(netdev))
346 dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
347 printk(KERN_INFO "Queue [NTU] [NTC] [bi(ntc)->dma ] "
348 "leng ntw timestamp\n");
349 for (n = 0; n < adapter->num_tx_queues; n++) {
350 tx_ring = adapter->tx_ring[n];
352 &tx_ring->tx_buffer_info[tx_ring->next_to_clean];
353 printk(KERN_INFO " %5d %5X %5X %016llX %04X %3X %016llX\n",
354 n, tx_ring->next_to_use, tx_ring->next_to_clean,
355 (u64)tx_buffer_info->dma,
356 tx_buffer_info->length,
357 tx_buffer_info->next_to_watch,
358 (u64)tx_buffer_info->time_stamp);
362 if (!netif_msg_tx_done(adapter))
363 goto rx_ring_summary;
365 dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
367 /* Transmit Descriptor Formats
369 * Advanced Transmit Descriptor
370 * +--------------------------------------------------------------+
371 * 0 | Buffer Address [63:0] |
372 * +--------------------------------------------------------------+
373 * 8 | PAYLEN | PORTS | IDX | STA | DCMD |DTYP | RSV | DTALEN |
374 * +--------------------------------------------------------------+
375 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0
378 for (n = 0; n < adapter->num_tx_queues; n++) {
379 tx_ring = adapter->tx_ring[n];
380 printk(KERN_INFO "------------------------------------\n");
381 printk(KERN_INFO "TX QUEUE INDEX = %d\n", tx_ring->queue_index);
382 printk(KERN_INFO "------------------------------------\n");
383 printk(KERN_INFO "T [desc] [address 63:0 ] "
384 "[PlPOIdStDDt Ln] [bi->dma ] "
385 "leng ntw timestamp bi->skb\n");
387 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
388 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
389 tx_buffer_info = &tx_ring->tx_buffer_info[i];
390 u0 = (struct my_u0 *)tx_desc;
391 printk(KERN_INFO "T [0x%03X] %016llX %016llX %016llX"
392 " %04X %3X %016llX %p", i,
395 (u64)tx_buffer_info->dma,
396 tx_buffer_info->length,
397 tx_buffer_info->next_to_watch,
398 (u64)tx_buffer_info->time_stamp,
399 tx_buffer_info->skb);
400 if (i == tx_ring->next_to_use &&
401 i == tx_ring->next_to_clean)
402 printk(KERN_CONT " NTC/U\n");
403 else if (i == tx_ring->next_to_use)
404 printk(KERN_CONT " NTU\n");
405 else if (i == tx_ring->next_to_clean)
406 printk(KERN_CONT " NTC\n");
408 printk(KERN_CONT "\n");
410 if (netif_msg_pktdata(adapter) &&
411 tx_buffer_info->dma != 0)
412 print_hex_dump(KERN_INFO, "",
413 DUMP_PREFIX_ADDRESS, 16, 1,
414 phys_to_virt(tx_buffer_info->dma),
415 tx_buffer_info->length, true);
419 /* Print RX Rings Summary */
421 dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
422 printk(KERN_INFO "Queue [NTU] [NTC]\n");
423 for (n = 0; n < adapter->num_rx_queues; n++) {
424 rx_ring = adapter->rx_ring[n];
425 printk(KERN_INFO "%5d %5X %5X\n", n,
426 rx_ring->next_to_use, rx_ring->next_to_clean);
430 if (!netif_msg_rx_status(adapter))
433 dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
435 /* Advanced Receive Descriptor (Read) Format
437 * +-----------------------------------------------------+
438 * 0 | Packet Buffer Address [63:1] |A0/NSE|
439 * +----------------------------------------------+------+
440 * 8 | Header Buffer Address [63:1] | DD |
441 * +-----------------------------------------------------+
444 * Advanced Receive Descriptor (Write-Back) Format
446 * 63 48 47 32 31 30 21 20 16 15 4 3 0
447 * +------------------------------------------------------+
448 * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS |
449 * | Checksum Ident | | | | Type | Type |
450 * +------------------------------------------------------+
451 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
452 * +------------------------------------------------------+
453 * 63 48 47 32 31 20 19 0
455 for (n = 0; n < adapter->num_rx_queues; n++) {
456 rx_ring = adapter->rx_ring[n];
457 printk(KERN_INFO "------------------------------------\n");
458 printk(KERN_INFO "RX QUEUE INDEX = %d\n", rx_ring->queue_index);
459 printk(KERN_INFO "------------------------------------\n");
460 printk(KERN_INFO "R [desc] [ PktBuf A0] "
461 "[ HeadBuf DD] [bi->dma ] [bi->skb] "
462 "<-- Adv Rx Read format\n");
463 printk(KERN_INFO "RWB[desc] [PcsmIpSHl PtRs] "
464 "[vl er S cks ln] ---------------- [bi->skb] "
465 "<-- Adv Rx Write-Back format\n");
467 for (i = 0; i < rx_ring->count; i++) {
468 rx_buffer_info = &rx_ring->rx_buffer_info[i];
469 rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
470 u0 = (struct my_u0 *)rx_desc;
471 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
472 if (staterr & IXGBE_RXD_STAT_DD) {
473 /* Descriptor Done */
474 printk(KERN_INFO "RWB[0x%03X] %016llX "
475 "%016llX ---------------- %p", i,
478 rx_buffer_info->skb);
480 printk(KERN_INFO "R [0x%03X] %016llX "
481 "%016llX %016llX %p", i,
484 (u64)rx_buffer_info->dma,
485 rx_buffer_info->skb);
487 if (netif_msg_pktdata(adapter)) {
488 print_hex_dump(KERN_INFO, "",
489 DUMP_PREFIX_ADDRESS, 16, 1,
490 phys_to_virt(rx_buffer_info->dma),
491 rx_ring->rx_buf_len, true);
493 if (rx_ring->rx_buf_len
494 < IXGBE_RXBUFFER_2048)
495 print_hex_dump(KERN_INFO, "",
496 DUMP_PREFIX_ADDRESS, 16, 1,
498 rx_buffer_info->page_dma +
499 rx_buffer_info->page_offset
505 if (i == rx_ring->next_to_use)
506 printk(KERN_CONT " NTU\n");
507 else if (i == rx_ring->next_to_clean)
508 printk(KERN_CONT " NTC\n");
510 printk(KERN_CONT "\n");
519 static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter)
523 /* Let firmware take over control of h/w */
524 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
525 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
526 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
529 static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter)
533 /* Let firmware know the driver has taken over */
534 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
535 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
536 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
540 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
541 * @adapter: pointer to adapter struct
542 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
543 * @queue: queue to map the corresponding interrupt to
544 * @msix_vector: the vector to map to the corresponding queue
547 static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction,
548 u8 queue, u8 msix_vector)
551 struct ixgbe_hw *hw = &adapter->hw;
552 switch (hw->mac.type) {
553 case ixgbe_mac_82598EB:
554 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
557 index = (((direction * 64) + queue) >> 2) & 0x1F;
558 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
559 ivar &= ~(0xFF << (8 * (queue & 0x3)));
560 ivar |= (msix_vector << (8 * (queue & 0x3)));
561 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
563 case ixgbe_mac_82599EB:
564 if (direction == -1) {
566 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
567 index = ((queue & 1) * 8);
568 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC);
569 ivar &= ~(0xFF << index);
570 ivar |= (msix_vector << index);
571 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar);
574 /* tx or rx causes */
575 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
576 index = ((16 * (queue & 1)) + (8 * direction));
577 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1));
578 ivar &= ~(0xFF << index);
579 ivar |= (msix_vector << index);
580 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar);
588 static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter,
593 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
594 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
595 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask);
597 mask = (qmask & 0xFFFFFFFF);
598 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask);
599 mask = (qmask >> 32);
600 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask);
604 static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter,
605 struct ixgbe_tx_buffer
608 if (tx_buffer_info->dma) {
609 if (tx_buffer_info->mapped_as_page)
610 dma_unmap_page(&adapter->pdev->dev,
612 tx_buffer_info->length,
615 dma_unmap_single(&adapter->pdev->dev,
617 tx_buffer_info->length,
619 tx_buffer_info->dma = 0;
621 if (tx_buffer_info->skb) {
622 dev_kfree_skb_any(tx_buffer_info->skb);
623 tx_buffer_info->skb = NULL;
625 tx_buffer_info->time_stamp = 0;
626 /* tx_buffer_info must be completely set up in the transmit path */
630 * ixgbe_tx_xon_state - check the tx ring xon state
631 * @adapter: the ixgbe adapter
632 * @tx_ring: the corresponding tx_ring
634 * If not in DCB mode, checks TFCS.TXOFF, otherwise, find out the
635 * corresponding TC of this tx_ring when checking TFCS.
637 * Returns : true if in xon state (currently not paused)
639 static inline bool ixgbe_tx_xon_state(struct ixgbe_adapter *adapter,
640 struct ixgbe_ring *tx_ring)
642 u32 txoff = IXGBE_TFCS_TXOFF;
644 #ifdef CONFIG_IXGBE_DCB
645 if (adapter->dcb_cfg.pfc_mode_enable) {
647 int reg_idx = tx_ring->reg_idx;
648 int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
650 switch (adapter->hw.mac.type) {
651 case ixgbe_mac_82598EB:
653 txoff = IXGBE_TFCS_TXOFF0;
655 case ixgbe_mac_82599EB:
657 txoff = IXGBE_TFCS_TXOFF;
661 if (tc == 2) /* TC2, TC3 */
662 tc += (reg_idx - 64) >> 4;
663 else if (tc == 3) /* TC4, TC5, TC6, TC7 */
664 tc += 1 + ((reg_idx - 96) >> 3);
665 } else if (dcb_i == 4) {
669 tc += (reg_idx - 64) >> 5;
670 if (tc == 2) /* TC2, TC3 */
671 tc += (reg_idx - 96) >> 4;
681 return IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & txoff;
684 static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter,
685 struct ixgbe_ring *tx_ring,
688 struct ixgbe_hw *hw = &adapter->hw;
690 /* Detect a transmit hang in hardware, this serializes the
691 * check with the clearing of time_stamp and movement of eop */
692 adapter->detect_tx_hung = false;
693 if (tx_ring->tx_buffer_info[eop].time_stamp &&
694 time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) &&
695 ixgbe_tx_xon_state(adapter, tx_ring)) {
696 /* detected Tx unit hang */
697 union ixgbe_adv_tx_desc *tx_desc;
698 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
699 e_err(drv, "Detected Tx Unit Hang\n"
701 " TDH, TDT <%x>, <%x>\n"
702 " next_to_use <%x>\n"
703 " next_to_clean <%x>\n"
704 "tx_buffer_info[next_to_clean]\n"
705 " time_stamp <%lx>\n"
707 tx_ring->queue_index,
708 IXGBE_READ_REG(hw, tx_ring->head),
709 IXGBE_READ_REG(hw, tx_ring->tail),
710 tx_ring->next_to_use, eop,
711 tx_ring->tx_buffer_info[eop].time_stamp, jiffies);
718 #define IXGBE_MAX_TXD_PWR 14
719 #define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
721 /* Tx Descriptors needed, worst case */
722 #define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
723 (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
724 #define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
725 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
727 static void ixgbe_tx_timeout(struct net_device *netdev);
730 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
731 * @q_vector: structure containing interrupt and ring information
732 * @tx_ring: tx ring to clean
734 static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
735 struct ixgbe_ring *tx_ring)
737 struct ixgbe_adapter *adapter = q_vector->adapter;
738 struct net_device *netdev = adapter->netdev;
739 union ixgbe_adv_tx_desc *tx_desc, *eop_desc;
740 struct ixgbe_tx_buffer *tx_buffer_info;
741 unsigned int i, eop, count = 0;
742 unsigned int total_bytes = 0, total_packets = 0;
744 i = tx_ring->next_to_clean;
745 eop = tx_ring->tx_buffer_info[i].next_to_watch;
746 eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
748 while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) &&
749 (count < tx_ring->work_limit)) {
750 bool cleaned = false;
751 rmb(); /* read buffer_info after eop_desc */
752 for ( ; !cleaned; count++) {
754 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
755 tx_buffer_info = &tx_ring->tx_buffer_info[i];
756 cleaned = (i == eop);
757 skb = tx_buffer_info->skb;
759 if (cleaned && skb) {
760 unsigned int segs, bytecount;
761 unsigned int hlen = skb_headlen(skb);
763 /* gso_segs is currently only valid for tcp */
764 segs = skb_shinfo(skb)->gso_segs ?: 1;
766 /* adjust for FCoE Sequence Offload */
767 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
768 && (skb->protocol == htons(ETH_P_FCOE)) &&
770 hlen = skb_transport_offset(skb) +
771 sizeof(struct fc_frame_header) +
772 sizeof(struct fcoe_crc_eof);
773 segs = DIV_ROUND_UP(skb->len - hlen,
774 skb_shinfo(skb)->gso_size);
776 #endif /* IXGBE_FCOE */
777 /* multiply data chunks by size of headers */
778 bytecount = ((segs - 1) * hlen) + skb->len;
779 total_packets += segs;
780 total_bytes += bytecount;
783 ixgbe_unmap_and_free_tx_resource(adapter,
786 tx_desc->wb.status = 0;
789 if (i == tx_ring->count)
793 eop = tx_ring->tx_buffer_info[i].next_to_watch;
794 eop_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop);
797 tx_ring->next_to_clean = i;
799 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
800 if (unlikely(count && netif_carrier_ok(netdev) &&
801 (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
802 /* Make sure that anybody stopping the queue after this
803 * sees the new next_to_clean.
806 if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) &&
807 !test_bit(__IXGBE_DOWN, &adapter->state)) {
808 netif_wake_subqueue(netdev, tx_ring->queue_index);
809 ++tx_ring->restart_queue;
813 if (adapter->detect_tx_hung) {
814 if (ixgbe_check_tx_hang(adapter, tx_ring, i)) {
815 /* schedule immediate reset if we believe we hung */
816 e_info(probe, "tx hang %d detected, resetting "
817 "adapter\n", adapter->tx_timeout_count + 1);
818 ixgbe_tx_timeout(adapter->netdev);
822 /* re-arm the interrupt */
823 if (count >= tx_ring->work_limit)
824 ixgbe_irq_rearm_queues(adapter, ((u64)1 << q_vector->v_idx));
826 tx_ring->total_bytes += total_bytes;
827 tx_ring->total_packets += total_packets;
828 tx_ring->stats.packets += total_packets;
829 tx_ring->stats.bytes += total_bytes;
830 return (count < tx_ring->work_limit);
833 #ifdef CONFIG_IXGBE_DCA
834 static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter,
835 struct ixgbe_ring *rx_ring)
839 int q = rx_ring->reg_idx;
841 if (rx_ring->cpu != cpu) {
842 rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q));
843 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
844 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK;
845 rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
846 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
847 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK_82599;
848 rxctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
849 IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599);
851 rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN;
852 rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN;
853 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN);
854 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_WRO_EN |
855 IXGBE_DCA_RXCTRL_DESC_HSRO_EN);
856 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q), rxctrl);
862 static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
863 struct ixgbe_ring *tx_ring)
867 int q = tx_ring->reg_idx;
868 struct ixgbe_hw *hw = &adapter->hw;
870 if (tx_ring->cpu != cpu) {
871 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
872 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(q));
873 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK;
874 txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
875 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
876 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(q), txctrl);
877 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
878 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(q));
879 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599;
880 txctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
881 IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599);
882 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
883 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(q), txctrl);
890 static void ixgbe_setup_dca(struct ixgbe_adapter *adapter)
894 if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED))
897 /* always use CB2 mode, difference is masked in the CB driver */
898 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2);
900 for (i = 0; i < adapter->num_tx_queues; i++) {
901 adapter->tx_ring[i]->cpu = -1;
902 ixgbe_update_tx_dca(adapter, adapter->tx_ring[i]);
904 for (i = 0; i < adapter->num_rx_queues; i++) {
905 adapter->rx_ring[i]->cpu = -1;
906 ixgbe_update_rx_dca(adapter, adapter->rx_ring[i]);
910 static int __ixgbe_notify_dca(struct device *dev, void *data)
912 struct net_device *netdev = dev_get_drvdata(dev);
913 struct ixgbe_adapter *adapter = netdev_priv(netdev);
914 unsigned long event = *(unsigned long *)data;
917 case DCA_PROVIDER_ADD:
918 /* if we're already enabled, don't do it again */
919 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
921 if (dca_add_requester(dev) == 0) {
922 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
923 ixgbe_setup_dca(adapter);
926 /* Fall Through since DCA is disabled. */
927 case DCA_PROVIDER_REMOVE:
928 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
929 dca_remove_requester(dev);
930 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
931 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
939 #endif /* CONFIG_IXGBE_DCA */
941 * ixgbe_receive_skb - Send a completed packet up the stack
942 * @adapter: board private structure
943 * @skb: packet to send up
944 * @status: hardware indication of status of receive
945 * @rx_ring: rx descriptor ring (for a specific queue) to setup
946 * @rx_desc: rx descriptor
948 static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector,
949 struct sk_buff *skb, u8 status,
950 struct ixgbe_ring *ring,
951 union ixgbe_adv_rx_desc *rx_desc)
953 struct ixgbe_adapter *adapter = q_vector->adapter;
954 struct napi_struct *napi = &q_vector->napi;
955 bool is_vlan = (status & IXGBE_RXD_STAT_VP);
956 u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
958 if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) {
959 if (adapter->vlgrp && is_vlan && (tag & VLAN_VID_MASK))
960 vlan_gro_receive(napi, adapter->vlgrp, tag, skb);
962 napi_gro_receive(napi, skb);
964 if (adapter->vlgrp && is_vlan && (tag & VLAN_VID_MASK))
965 vlan_hwaccel_rx(skb, adapter->vlgrp, tag);
972 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
973 * @adapter: address of board private structure
974 * @status_err: hardware indication of status of receive
975 * @skb: skb currently being received and modified
977 static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter,
978 union ixgbe_adv_rx_desc *rx_desc,
981 u32 status_err = le32_to_cpu(rx_desc->wb.upper.status_error);
983 skb->ip_summed = CHECKSUM_NONE;
985 /* Rx csum disabled */
986 if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
989 /* if IP and error */
990 if ((status_err & IXGBE_RXD_STAT_IPCS) &&
991 (status_err & IXGBE_RXDADV_ERR_IPE)) {
992 adapter->hw_csum_rx_error++;
996 if (!(status_err & IXGBE_RXD_STAT_L4CS))
999 if (status_err & IXGBE_RXDADV_ERR_TCPE) {
1000 u16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
1003 * 82599 errata, UDP frames with a 0 checksum can be marked as
1006 if ((pkt_info & IXGBE_RXDADV_PKTTYPE_UDP) &&
1007 (adapter->hw.mac.type == ixgbe_mac_82599EB))
1010 adapter->hw_csum_rx_error++;
1014 /* It must be a TCP or UDP packet with a valid checksum */
1015 skb->ip_summed = CHECKSUM_UNNECESSARY;
1018 static inline void ixgbe_release_rx_desc(struct ixgbe_hw *hw,
1019 struct ixgbe_ring *rx_ring, u32 val)
1022 * Force memory writes to complete before letting h/w
1023 * know there are new descriptors to fetch. (Only
1024 * applicable for weak-ordered memory model archs,
1028 IXGBE_WRITE_REG(hw, IXGBE_RDT(rx_ring->reg_idx), val);
1032 * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split
1033 * @adapter: address of board private structure
1035 static void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter,
1036 struct ixgbe_ring *rx_ring,
1039 struct net_device *netdev = adapter->netdev;
1040 struct pci_dev *pdev = adapter->pdev;
1041 union ixgbe_adv_rx_desc *rx_desc;
1042 struct ixgbe_rx_buffer *bi;
1044 unsigned int bufsz = rx_ring->rx_buf_len;
1046 i = rx_ring->next_to_use;
1047 bi = &rx_ring->rx_buffer_info[i];
1049 while (cleaned_count--) {
1050 rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
1052 if (!bi->page_dma &&
1053 (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED)) {
1055 bi->page = netdev_alloc_page(netdev);
1057 adapter->alloc_rx_page_failed++;
1060 bi->page_offset = 0;
1062 /* use a half page if we're re-using */
1063 bi->page_offset ^= (PAGE_SIZE / 2);
1066 bi->page_dma = dma_map_page(&pdev->dev, bi->page,
1073 struct sk_buff *skb = netdev_alloc_skb_ip_align(netdev,
1078 adapter->alloc_rx_buff_failed++;
1081 /* initialize queue mapping */
1082 skb_record_rx_queue(skb, rx_ring->queue_index);
1086 bi->dma = dma_map_single(&pdev->dev,
1088 rx_ring->rx_buf_len,
1091 /* Refresh the desc even if buffer_addrs didn't change because
1092 * each write-back erases this info. */
1093 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
1094 rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
1095 rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
1097 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
1101 if (i == rx_ring->count)
1103 bi = &rx_ring->rx_buffer_info[i];
1107 if (rx_ring->next_to_use != i) {
1108 rx_ring->next_to_use = i;
1110 i = (rx_ring->count - 1);
1112 ixgbe_release_rx_desc(&adapter->hw, rx_ring, i);
1116 static inline u16 ixgbe_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc)
1118 return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info;
1121 static inline u16 ixgbe_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc)
1123 return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
1126 static inline u32 ixgbe_get_rsc_count(union ixgbe_adv_rx_desc *rx_desc)
1128 return (le32_to_cpu(rx_desc->wb.lower.lo_dword.data) &
1129 IXGBE_RXDADV_RSCCNT_MASK) >>
1130 IXGBE_RXDADV_RSCCNT_SHIFT;
1134 * ixgbe_transform_rsc_queue - change rsc queue into a full packet
1135 * @skb: pointer to the last skb in the rsc queue
1136 * @count: pointer to number of packets coalesced in this context
1138 * This function changes a queue full of hw rsc buffers into a completed
1139 * packet. It uses the ->prev pointers to find the first packet and then
1140 * turns it into the frag list owner.
1142 static inline struct sk_buff *ixgbe_transform_rsc_queue(struct sk_buff *skb,
1145 unsigned int frag_list_size = 0;
1148 struct sk_buff *prev = skb->prev;
1149 frag_list_size += skb->len;
1155 skb_shinfo(skb)->frag_list = skb->next;
1157 skb->len += frag_list_size;
1158 skb->data_len += frag_list_size;
1159 skb->truesize += frag_list_size;
1163 struct ixgbe_rsc_cb {
1168 #define IXGBE_RSC_CB(skb) ((struct ixgbe_rsc_cb *)(skb)->cb)
1170 static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
1171 struct ixgbe_ring *rx_ring,
1172 int *work_done, int work_to_do)
1174 struct ixgbe_adapter *adapter = q_vector->adapter;
1175 struct net_device *netdev = adapter->netdev;
1176 struct pci_dev *pdev = adapter->pdev;
1177 union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
1178 struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer;
1179 struct sk_buff *skb;
1180 unsigned int i, rsc_count = 0;
1183 bool cleaned = false;
1184 int cleaned_count = 0;
1185 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
1188 #endif /* IXGBE_FCOE */
1190 i = rx_ring->next_to_clean;
1191 rx_desc = IXGBE_RX_DESC_ADV(*rx_ring, i);
1192 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
1193 rx_buffer_info = &rx_ring->rx_buffer_info[i];
1195 while (staterr & IXGBE_RXD_STAT_DD) {
1197 if (*work_done >= work_to_do)
1201 rmb(); /* read descriptor and rx_buffer_info after status DD */
1202 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
1203 hdr_info = le16_to_cpu(ixgbe_get_hdr_info(rx_desc));
1204 len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
1205 IXGBE_RXDADV_HDRBUFLEN_SHIFT;
1206 upper_len = le16_to_cpu(rx_desc->wb.upper.length);
1207 if ((len > IXGBE_RX_HDR_SIZE) ||
1208 (upper_len && !(hdr_info & IXGBE_RXDADV_SPH)))
1209 len = IXGBE_RX_HDR_SIZE;
1211 len = le16_to_cpu(rx_desc->wb.upper.length);
1215 skb = rx_buffer_info->skb;
1216 prefetch(skb->data);
1217 rx_buffer_info->skb = NULL;
1219 if (rx_buffer_info->dma) {
1220 if ((adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
1221 (!(staterr & IXGBE_RXD_STAT_EOP)) &&
1224 * When HWRSC is enabled, delay unmapping
1225 * of the first packet. It carries the
1226 * header information, HW may still
1227 * access the header after the writeback.
1228 * Only unmap it when EOP is reached
1230 IXGBE_RSC_CB(skb)->delay_unmap = true;
1231 IXGBE_RSC_CB(skb)->dma = rx_buffer_info->dma;
1233 dma_unmap_single(&pdev->dev,
1234 rx_buffer_info->dma,
1235 rx_ring->rx_buf_len,
1238 rx_buffer_info->dma = 0;
1243 dma_unmap_page(&pdev->dev, rx_buffer_info->page_dma,
1244 PAGE_SIZE / 2, DMA_FROM_DEVICE);
1245 rx_buffer_info->page_dma = 0;
1246 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
1247 rx_buffer_info->page,
1248 rx_buffer_info->page_offset,
1251 if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) ||
1252 (page_count(rx_buffer_info->page) != 1))
1253 rx_buffer_info->page = NULL;
1255 get_page(rx_buffer_info->page);
1257 skb->len += upper_len;
1258 skb->data_len += upper_len;
1259 skb->truesize += upper_len;
1263 if (i == rx_ring->count)
1266 next_rxd = IXGBE_RX_DESC_ADV(*rx_ring, i);
1270 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)
1271 rsc_count = ixgbe_get_rsc_count(rx_desc);
1274 u32 nextp = (staterr & IXGBE_RXDADV_NEXTP_MASK) >>
1275 IXGBE_RXDADV_NEXTP_SHIFT;
1276 next_buffer = &rx_ring->rx_buffer_info[nextp];
1278 next_buffer = &rx_ring->rx_buffer_info[i];
1281 if (staterr & IXGBE_RXD_STAT_EOP) {
1283 skb = ixgbe_transform_rsc_queue(skb, &(rx_ring->rsc_count));
1284 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
1285 if (IXGBE_RSC_CB(skb)->delay_unmap) {
1286 dma_unmap_single(&pdev->dev,
1287 IXGBE_RSC_CB(skb)->dma,
1288 rx_ring->rx_buf_len,
1290 IXGBE_RSC_CB(skb)->dma = 0;
1291 IXGBE_RSC_CB(skb)->delay_unmap = false;
1293 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED)
1294 rx_ring->rsc_count += skb_shinfo(skb)->nr_frags;
1296 rx_ring->rsc_count++;
1297 rx_ring->rsc_flush++;
1299 rx_ring->stats.packets++;
1300 rx_ring->stats.bytes += skb->len;
1302 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
1303 rx_buffer_info->skb = next_buffer->skb;
1304 rx_buffer_info->dma = next_buffer->dma;
1305 next_buffer->skb = skb;
1306 next_buffer->dma = 0;
1308 skb->next = next_buffer->skb;
1309 skb->next->prev = skb;
1311 rx_ring->non_eop_descs++;
1315 if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) {
1316 dev_kfree_skb_irq(skb);
1320 ixgbe_rx_checksum(adapter, rx_desc, skb);
1322 /* probably a little skewed due to removing CRC */
1323 total_rx_bytes += skb->len;
1326 skb->protocol = eth_type_trans(skb, adapter->netdev);
1328 /* if ddp, not passing to ULD unless for FCP_RSP or error */
1329 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
1330 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb);
1334 #endif /* IXGBE_FCOE */
1335 ixgbe_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
1338 rx_desc->wb.upper.status_error = 0;
1340 /* return some buffers to hardware, one at a time is too slow */
1341 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) {
1342 ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
1346 /* use prefetched values */
1348 rx_buffer_info = &rx_ring->rx_buffer_info[i];
1350 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
1353 rx_ring->next_to_clean = i;
1354 cleaned_count = IXGBE_DESC_UNUSED(rx_ring);
1357 ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
1360 /* include DDPed FCoE data */
1361 if (ddp_bytes > 0) {
1364 mss = adapter->netdev->mtu - sizeof(struct fcoe_hdr) -
1365 sizeof(struct fc_frame_header) -
1366 sizeof(struct fcoe_crc_eof);
1369 total_rx_bytes += ddp_bytes;
1370 total_rx_packets += DIV_ROUND_UP(ddp_bytes, mss);
1372 #endif /* IXGBE_FCOE */
1374 rx_ring->total_packets += total_rx_packets;
1375 rx_ring->total_bytes += total_rx_bytes;
1376 netdev->stats.rx_bytes += total_rx_bytes;
1377 netdev->stats.rx_packets += total_rx_packets;
1382 static int ixgbe_clean_rxonly(struct napi_struct *, int);
1384 * ixgbe_configure_msix - Configure MSI-X hardware
1385 * @adapter: board private structure
1387 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
1390 static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
1392 struct ixgbe_q_vector *q_vector;
1393 int i, j, q_vectors, v_idx, r_idx;
1396 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1399 * Populate the IVAR table and set the ITR values to the
1400 * corresponding register.
1402 for (v_idx = 0; v_idx < q_vectors; v_idx++) {
1403 q_vector = adapter->q_vector[v_idx];
1404 /* XXX for_each_set_bit(...) */
1405 r_idx = find_first_bit(q_vector->rxr_idx,
1406 adapter->num_rx_queues);
1408 for (i = 0; i < q_vector->rxr_count; i++) {
1409 j = adapter->rx_ring[r_idx]->reg_idx;
1410 ixgbe_set_ivar(adapter, 0, j, v_idx);
1411 r_idx = find_next_bit(q_vector->rxr_idx,
1412 adapter->num_rx_queues,
1415 r_idx = find_first_bit(q_vector->txr_idx,
1416 adapter->num_tx_queues);
1418 for (i = 0; i < q_vector->txr_count; i++) {
1419 j = adapter->tx_ring[r_idx]->reg_idx;
1420 ixgbe_set_ivar(adapter, 1, j, v_idx);
1421 r_idx = find_next_bit(q_vector->txr_idx,
1422 adapter->num_tx_queues,
1426 if (q_vector->txr_count && !q_vector->rxr_count)
1428 q_vector->eitr = adapter->tx_eitr_param;
1429 else if (q_vector->rxr_count)
1431 q_vector->eitr = adapter->rx_eitr_param;
1433 ixgbe_write_eitr(q_vector);
1436 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
1437 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX,
1439 else if (adapter->hw.mac.type == ixgbe_mac_82599EB)
1440 ixgbe_set_ivar(adapter, -1, 1, v_idx);
1441 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
1443 /* set up to autoclear timer, and the vectors */
1444 mask = IXGBE_EIMS_ENABLE_MASK;
1445 if (adapter->num_vfs)
1446 mask &= ~(IXGBE_EIMS_OTHER |
1447 IXGBE_EIMS_MAILBOX |
1450 mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC);
1451 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask);
1454 enum latency_range {
1458 latency_invalid = 255
1462 * ixgbe_update_itr - update the dynamic ITR value based on statistics
1463 * @adapter: pointer to adapter
1464 * @eitr: eitr setting (ints per sec) to give last timeslice
1465 * @itr_setting: current throttle rate in ints/second
1466 * @packets: the number of packets during this measurement interval
1467 * @bytes: the number of bytes during this measurement interval
1469 * Stores a new ITR value based on packets and byte
1470 * counts during the last interrupt. The advantage of per interrupt
1471 * computation is faster updates and more accurate ITR for the current
1472 * traffic pattern. Constants in this function were computed
1473 * based on theoretical maximum wire speed and thresholds were set based
1474 * on testing data as well as attempting to minimize response time
1475 * while increasing bulk throughput.
1476 * this functionality is controlled by the InterruptThrottleRate module
1477 * parameter (see ixgbe_param.c)
1479 static u8 ixgbe_update_itr(struct ixgbe_adapter *adapter,
1480 u32 eitr, u8 itr_setting,
1481 int packets, int bytes)
1483 unsigned int retval = itr_setting;
1488 goto update_itr_done;
1491 /* simple throttlerate management
1492 * 0-20MB/s lowest (100000 ints/s)
1493 * 20-100MB/s low (20000 ints/s)
1494 * 100-1249MB/s bulk (8000 ints/s)
1496 /* what was last interrupt timeslice? */
1497 timepassed_us = 1000000/eitr;
1498 bytes_perint = bytes / timepassed_us; /* bytes/usec */
1500 switch (itr_setting) {
1501 case lowest_latency:
1502 if (bytes_perint > adapter->eitr_low)
1503 retval = low_latency;
1506 if (bytes_perint > adapter->eitr_high)
1507 retval = bulk_latency;
1508 else if (bytes_perint <= adapter->eitr_low)
1509 retval = lowest_latency;
1512 if (bytes_perint <= adapter->eitr_high)
1513 retval = low_latency;
1522 * ixgbe_write_eitr - write EITR register in hardware specific way
1523 * @q_vector: structure containing interrupt and ring information
1525 * This function is made to be called by ethtool and by the driver
1526 * when it needs to update EITR registers at runtime. Hardware
1527 * specific quirks/differences are taken care of here.
1529 void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector)
1531 struct ixgbe_adapter *adapter = q_vector->adapter;
1532 struct ixgbe_hw *hw = &adapter->hw;
1533 int v_idx = q_vector->v_idx;
1534 u32 itr_reg = EITR_INTS_PER_SEC_TO_REG(q_vector->eitr);
1536 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1537 /* must write high and low 16 bits to reset counter */
1538 itr_reg |= (itr_reg << 16);
1539 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
1541 * 82599 can support a value of zero, so allow it for
1542 * max interrupt rate, but there is an errata where it can
1543 * not be zero with RSC
1546 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
1550 * set the WDIS bit to not clear the timer bits and cause an
1551 * immediate assertion of the interrupt
1553 itr_reg |= IXGBE_EITR_CNT_WDIS;
1555 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg);
1558 static void ixgbe_set_itr_msix(struct ixgbe_q_vector *q_vector)
1560 struct ixgbe_adapter *adapter = q_vector->adapter;
1562 u8 current_itr, ret_itr;
1564 struct ixgbe_ring *rx_ring, *tx_ring;
1566 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1567 for (i = 0; i < q_vector->txr_count; i++) {
1568 tx_ring = adapter->tx_ring[r_idx];
1569 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
1571 tx_ring->total_packets,
1572 tx_ring->total_bytes);
1573 /* if the result for this queue would decrease interrupt
1574 * rate for this vector then use that result */
1575 q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ?
1576 q_vector->tx_itr - 1 : ret_itr);
1577 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
1581 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1582 for (i = 0; i < q_vector->rxr_count; i++) {
1583 rx_ring = adapter->rx_ring[r_idx];
1584 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
1586 rx_ring->total_packets,
1587 rx_ring->total_bytes);
1588 /* if the result for this queue would decrease interrupt
1589 * rate for this vector then use that result */
1590 q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ?
1591 q_vector->rx_itr - 1 : ret_itr);
1592 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1596 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
1598 switch (current_itr) {
1599 /* counts and packets in update_itr are dependent on these numbers */
1600 case lowest_latency:
1604 new_itr = 20000; /* aka hwitr = ~200 */
1612 if (new_itr != q_vector->eitr) {
1613 /* do an exponential smoothing */
1614 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
1616 /* save the algorithm value here, not the smoothed one */
1617 q_vector->eitr = new_itr;
1619 ixgbe_write_eitr(q_vector);
1624 * ixgbe_check_overtemp_task - worker thread to check over tempurature
1625 * @work: pointer to work_struct containing our data
1627 static void ixgbe_check_overtemp_task(struct work_struct *work)
1629 struct ixgbe_adapter *adapter = container_of(work,
1630 struct ixgbe_adapter,
1631 check_overtemp_task);
1632 struct ixgbe_hw *hw = &adapter->hw;
1633 u32 eicr = adapter->interrupt_event;
1635 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) {
1636 switch (hw->device_id) {
1637 case IXGBE_DEV_ID_82599_T3_LOM: {
1639 bool link_up = false;
1641 if (hw->mac.ops.check_link)
1642 hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
1644 if (((eicr & IXGBE_EICR_GPI_SDP0) && (!link_up)) ||
1645 (eicr & IXGBE_EICR_LSC))
1646 /* Check if this is due to overtemp */
1647 if (hw->phy.ops.check_overtemp(hw) == IXGBE_ERR_OVERTEMP)
1652 if (!(eicr & IXGBE_EICR_GPI_SDP0))
1656 e_crit(drv, "Network adapter has been stopped because it has "
1657 "over heated. Restart the computer. If the problem "
1658 "persists, power off the system and replace the "
1660 /* write to clear the interrupt */
1661 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP0);
1665 static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
1667 struct ixgbe_hw *hw = &adapter->hw;
1669 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) &&
1670 (eicr & IXGBE_EICR_GPI_SDP1)) {
1671 e_crit(probe, "Fan has stopped, replace the adapter\n");
1672 /* write to clear the interrupt */
1673 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
1677 static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr)
1679 struct ixgbe_hw *hw = &adapter->hw;
1681 if (eicr & IXGBE_EICR_GPI_SDP1) {
1682 /* Clear the interrupt */
1683 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
1684 schedule_work(&adapter->multispeed_fiber_task);
1685 } else if (eicr & IXGBE_EICR_GPI_SDP2) {
1686 /* Clear the interrupt */
1687 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP2);
1688 schedule_work(&adapter->sfp_config_module_task);
1690 /* Interrupt isn't for us... */
1695 static void ixgbe_check_lsc(struct ixgbe_adapter *adapter)
1697 struct ixgbe_hw *hw = &adapter->hw;
1700 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
1701 adapter->link_check_timeout = jiffies;
1702 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
1703 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC);
1704 IXGBE_WRITE_FLUSH(hw);
1705 schedule_work(&adapter->watchdog_task);
1709 static irqreturn_t ixgbe_msix_lsc(int irq, void *data)
1711 struct net_device *netdev = data;
1712 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1713 struct ixgbe_hw *hw = &adapter->hw;
1717 * Workaround for Silicon errata. Use clear-by-write instead
1718 * of clear-by-read. Reading with EICS will return the
1719 * interrupt causes without clearing, which later be done
1720 * with the write to EICR.
1722 eicr = IXGBE_READ_REG(hw, IXGBE_EICS);
1723 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr);
1725 if (eicr & IXGBE_EICR_LSC)
1726 ixgbe_check_lsc(adapter);
1728 if (eicr & IXGBE_EICR_MAILBOX)
1729 ixgbe_msg_task(adapter);
1731 if (hw->mac.type == ixgbe_mac_82598EB)
1732 ixgbe_check_fan_failure(adapter, eicr);
1734 if (hw->mac.type == ixgbe_mac_82599EB) {
1735 ixgbe_check_sfp_event(adapter, eicr);
1736 adapter->interrupt_event = eicr;
1737 if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
1738 ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC)))
1739 schedule_work(&adapter->check_overtemp_task);
1741 /* Handle Flow Director Full threshold interrupt */
1742 if (eicr & IXGBE_EICR_FLOW_DIR) {
1744 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_FLOW_DIR);
1745 /* Disable transmits before FDIR Re-initialization */
1746 netif_tx_stop_all_queues(netdev);
1747 for (i = 0; i < adapter->num_tx_queues; i++) {
1748 struct ixgbe_ring *tx_ring =
1749 adapter->tx_ring[i];
1750 if (test_and_clear_bit(__IXGBE_FDIR_INIT_DONE,
1751 &tx_ring->reinit_state))
1752 schedule_work(&adapter->fdir_reinit_task);
1756 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1757 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER);
1762 static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter,
1767 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1768 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
1769 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
1771 mask = (qmask & 0xFFFFFFFF);
1772 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(0), mask);
1773 mask = (qmask >> 32);
1774 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(1), mask);
1776 /* skip the flush */
1779 static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter,
1784 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1785 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
1786 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, mask);
1788 mask = (qmask & 0xFFFFFFFF);
1789 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), mask);
1790 mask = (qmask >> 32);
1791 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), mask);
1793 /* skip the flush */
1796 static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data)
1798 struct ixgbe_q_vector *q_vector = data;
1799 struct ixgbe_adapter *adapter = q_vector->adapter;
1800 struct ixgbe_ring *tx_ring;
1803 if (!q_vector->txr_count)
1806 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1807 for (i = 0; i < q_vector->txr_count; i++) {
1808 tx_ring = adapter->tx_ring[r_idx];
1809 tx_ring->total_bytes = 0;
1810 tx_ring->total_packets = 0;
1811 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
1815 /* EIAM disabled interrupts (on this vector) for us */
1816 napi_schedule(&q_vector->napi);
1822 * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
1824 * @data: pointer to our q_vector struct for this interrupt vector
1826 static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data)
1828 struct ixgbe_q_vector *q_vector = data;
1829 struct ixgbe_adapter *adapter = q_vector->adapter;
1830 struct ixgbe_ring *rx_ring;
1834 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1835 for (i = 0; i < q_vector->rxr_count; i++) {
1836 rx_ring = adapter->rx_ring[r_idx];
1837 rx_ring->total_bytes = 0;
1838 rx_ring->total_packets = 0;
1839 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1843 if (!q_vector->rxr_count)
1846 /* disable interrupts on this vector only */
1847 /* EIAM disabled interrupts (on this vector) for us */
1848 napi_schedule(&q_vector->napi);
1853 static irqreturn_t ixgbe_msix_clean_many(int irq, void *data)
1855 struct ixgbe_q_vector *q_vector = data;
1856 struct ixgbe_adapter *adapter = q_vector->adapter;
1857 struct ixgbe_ring *ring;
1861 if (!q_vector->txr_count && !q_vector->rxr_count)
1864 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1865 for (i = 0; i < q_vector->txr_count; i++) {
1866 ring = adapter->tx_ring[r_idx];
1867 ring->total_bytes = 0;
1868 ring->total_packets = 0;
1869 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
1873 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1874 for (i = 0; i < q_vector->rxr_count; i++) {
1875 ring = adapter->rx_ring[r_idx];
1876 ring->total_bytes = 0;
1877 ring->total_packets = 0;
1878 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1882 /* EIAM disabled interrupts (on this vector) for us */
1883 napi_schedule(&q_vector->napi);
1889 * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine
1890 * @napi: napi struct with our devices info in it
1891 * @budget: amount of work driver is allowed to do this pass, in packets
1893 * This function is optimized for cleaning one queue only on a single
1896 static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget)
1898 struct ixgbe_q_vector *q_vector =
1899 container_of(napi, struct ixgbe_q_vector, napi);
1900 struct ixgbe_adapter *adapter = q_vector->adapter;
1901 struct ixgbe_ring *rx_ring = NULL;
1905 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1906 rx_ring = adapter->rx_ring[r_idx];
1907 #ifdef CONFIG_IXGBE_DCA
1908 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1909 ixgbe_update_rx_dca(adapter, rx_ring);
1912 ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
1914 /* If all Rx work done, exit the polling mode */
1915 if (work_done < budget) {
1916 napi_complete(napi);
1917 if (adapter->rx_itr_setting & 1)
1918 ixgbe_set_itr_msix(q_vector);
1919 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1920 ixgbe_irq_enable_queues(adapter,
1921 ((u64)1 << q_vector->v_idx));
1928 * ixgbe_clean_rxtx_many - msix (aka one shot) rx clean routine
1929 * @napi: napi struct with our devices info in it
1930 * @budget: amount of work driver is allowed to do this pass, in packets
1932 * This function will clean more than one rx queue associated with a
1935 static int ixgbe_clean_rxtx_many(struct napi_struct *napi, int budget)
1937 struct ixgbe_q_vector *q_vector =
1938 container_of(napi, struct ixgbe_q_vector, napi);
1939 struct ixgbe_adapter *adapter = q_vector->adapter;
1940 struct ixgbe_ring *ring = NULL;
1941 int work_done = 0, i;
1943 bool tx_clean_complete = true;
1945 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1946 for (i = 0; i < q_vector->txr_count; i++) {
1947 ring = adapter->tx_ring[r_idx];
1948 #ifdef CONFIG_IXGBE_DCA
1949 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1950 ixgbe_update_tx_dca(adapter, ring);
1952 tx_clean_complete &= ixgbe_clean_tx_irq(q_vector, ring);
1953 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
1957 /* attempt to distribute budget to each queue fairly, but don't allow
1958 * the budget to go below 1 because we'll exit polling */
1959 budget /= (q_vector->rxr_count ?: 1);
1960 budget = max(budget, 1);
1961 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1962 for (i = 0; i < q_vector->rxr_count; i++) {
1963 ring = adapter->rx_ring[r_idx];
1964 #ifdef CONFIG_IXGBE_DCA
1965 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1966 ixgbe_update_rx_dca(adapter, ring);
1968 ixgbe_clean_rx_irq(q_vector, ring, &work_done, budget);
1969 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1973 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1974 ring = adapter->rx_ring[r_idx];
1975 /* If all Rx work done, exit the polling mode */
1976 if (work_done < budget) {
1977 napi_complete(napi);
1978 if (adapter->rx_itr_setting & 1)
1979 ixgbe_set_itr_msix(q_vector);
1980 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1981 ixgbe_irq_enable_queues(adapter,
1982 ((u64)1 << q_vector->v_idx));
1990 * ixgbe_clean_txonly - msix (aka one shot) tx clean routine
1991 * @napi: napi struct with our devices info in it
1992 * @budget: amount of work driver is allowed to do this pass, in packets
1994 * This function is optimized for cleaning one queue only on a single
1997 static int ixgbe_clean_txonly(struct napi_struct *napi, int budget)
1999 struct ixgbe_q_vector *q_vector =
2000 container_of(napi, struct ixgbe_q_vector, napi);
2001 struct ixgbe_adapter *adapter = q_vector->adapter;
2002 struct ixgbe_ring *tx_ring = NULL;
2006 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
2007 tx_ring = adapter->tx_ring[r_idx];
2008 #ifdef CONFIG_IXGBE_DCA
2009 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
2010 ixgbe_update_tx_dca(adapter, tx_ring);
2013 if (!ixgbe_clean_tx_irq(q_vector, tx_ring))
2016 /* If all Tx work done, exit the polling mode */
2017 if (work_done < budget) {
2018 napi_complete(napi);
2019 if (adapter->tx_itr_setting & 1)
2020 ixgbe_set_itr_msix(q_vector);
2021 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2022 ixgbe_irq_enable_queues(adapter, ((u64)1 << q_vector->v_idx));
2028 static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx,
2031 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
2033 set_bit(r_idx, q_vector->rxr_idx);
2034 q_vector->rxr_count++;
2037 static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx,
2040 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
2042 set_bit(t_idx, q_vector->txr_idx);
2043 q_vector->txr_count++;
2047 * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors
2048 * @adapter: board private structure to initialize
2049 * @vectors: allotted vector count for descriptor rings
2051 * This function maps descriptor rings to the queue-specific vectors
2052 * we were allotted through the MSI-X enabling code. Ideally, we'd have
2053 * one vector per ring/queue, but on a constrained vector budget, we
2054 * group the rings as "efficiently" as possible. You would add new
2055 * mapping configurations in here.
2057 static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter,
2061 int rxr_idx = 0, txr_idx = 0;
2062 int rxr_remaining = adapter->num_rx_queues;
2063 int txr_remaining = adapter->num_tx_queues;
2068 /* No mapping required if MSI-X is disabled. */
2069 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
2073 * The ideal configuration...
2074 * We have enough vectors to map one per queue.
2076 if (vectors == adapter->num_rx_queues + adapter->num_tx_queues) {
2077 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
2078 map_vector_to_rxq(adapter, v_start, rxr_idx);
2080 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
2081 map_vector_to_txq(adapter, v_start, txr_idx);
2087 * If we don't have enough vectors for a 1-to-1
2088 * mapping, we'll have to group them so there are
2089 * multiple queues per vector.
2091 /* Re-adjusting *qpv takes care of the remainder. */
2092 for (i = v_start; i < vectors; i++) {
2093 rqpv = DIV_ROUND_UP(rxr_remaining, vectors - i);
2094 for (j = 0; j < rqpv; j++) {
2095 map_vector_to_rxq(adapter, i, rxr_idx);
2100 for (i = v_start; i < vectors; i++) {
2101 tqpv = DIV_ROUND_UP(txr_remaining, vectors - i);
2102 for (j = 0; j < tqpv; j++) {
2103 map_vector_to_txq(adapter, i, txr_idx);
2114 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
2115 * @adapter: board private structure
2117 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
2118 * interrupts from the kernel.
2120 static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
2122 struct net_device *netdev = adapter->netdev;
2123 irqreturn_t (*handler)(int, void *);
2124 int i, vector, q_vectors, err;
2127 /* Decrement for Other and TCP Timer vectors */
2128 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2130 /* Map the Tx/Rx rings to the vectors we were allotted. */
2131 err = ixgbe_map_rings_to_vectors(adapter, q_vectors);
2135 #define SET_HANDLER(_v) ((!(_v)->rxr_count) ? &ixgbe_msix_clean_tx : \
2136 (!(_v)->txr_count) ? &ixgbe_msix_clean_rx : \
2137 &ixgbe_msix_clean_many)
2138 for (vector = 0; vector < q_vectors; vector++) {
2139 handler = SET_HANDLER(adapter->q_vector[vector]);
2141 if(handler == &ixgbe_msix_clean_rx) {
2142 sprintf(adapter->name[vector], "%s-%s-%d",
2143 netdev->name, "rx", ri++);
2145 else if(handler == &ixgbe_msix_clean_tx) {
2146 sprintf(adapter->name[vector], "%s-%s-%d",
2147 netdev->name, "tx", ti++);
2150 sprintf(adapter->name[vector], "%s-%s-%d",
2151 netdev->name, "TxRx", vector);
2153 err = request_irq(adapter->msix_entries[vector].vector,
2154 handler, 0, adapter->name[vector],
2155 adapter->q_vector[vector]);
2157 e_err(probe, "request_irq failed for MSIX interrupt "
2158 "Error: %d\n", err);
2159 goto free_queue_irqs;
2163 sprintf(adapter->name[vector], "%s:lsc", netdev->name);
2164 err = request_irq(adapter->msix_entries[vector].vector,
2165 ixgbe_msix_lsc, 0, adapter->name[vector], netdev);
2167 e_err(probe, "request_irq for msix_lsc failed: %d\n", err);
2168 goto free_queue_irqs;
2174 for (i = vector - 1; i >= 0; i--)
2175 free_irq(adapter->msix_entries[--vector].vector,
2176 adapter->q_vector[i]);
2177 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
2178 pci_disable_msix(adapter->pdev);
2179 kfree(adapter->msix_entries);
2180 adapter->msix_entries = NULL;
2185 static void ixgbe_set_itr(struct ixgbe_adapter *adapter)
2187 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
2189 u32 new_itr = q_vector->eitr;
2190 struct ixgbe_ring *rx_ring = adapter->rx_ring[0];
2191 struct ixgbe_ring *tx_ring = adapter->tx_ring[0];
2193 q_vector->tx_itr = ixgbe_update_itr(adapter, new_itr,
2195 tx_ring->total_packets,
2196 tx_ring->total_bytes);
2197 q_vector->rx_itr = ixgbe_update_itr(adapter, new_itr,
2199 rx_ring->total_packets,
2200 rx_ring->total_bytes);
2202 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
2204 switch (current_itr) {
2205 /* counts and packets in update_itr are dependent on these numbers */
2206 case lowest_latency:
2210 new_itr = 20000; /* aka hwitr = ~200 */
2219 if (new_itr != q_vector->eitr) {
2220 /* do an exponential smoothing */
2221 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
2223 /* save the algorithm value here, not the smoothed one */
2224 q_vector->eitr = new_itr;
2226 ixgbe_write_eitr(q_vector);
2231 * ixgbe_irq_enable - Enable default interrupt generation settings
2232 * @adapter: board private structure
2234 static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter)
2238 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
2239 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
2240 mask |= IXGBE_EIMS_GPI_SDP0;
2241 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
2242 mask |= IXGBE_EIMS_GPI_SDP1;
2243 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
2244 mask |= IXGBE_EIMS_ECC;
2245 mask |= IXGBE_EIMS_GPI_SDP1;
2246 mask |= IXGBE_EIMS_GPI_SDP2;
2247 if (adapter->num_vfs)
2248 mask |= IXGBE_EIMS_MAILBOX;
2250 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
2251 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
2252 mask |= IXGBE_EIMS_FLOW_DIR;
2254 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
2255 ixgbe_irq_enable_queues(adapter, ~0);
2256 IXGBE_WRITE_FLUSH(&adapter->hw);
2258 if (adapter->num_vfs > 32) {
2259 u32 eitrsel = (1 << (adapter->num_vfs - 32)) - 1;
2260 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel);
2265 * ixgbe_intr - legacy mode Interrupt Handler
2266 * @irq: interrupt number
2267 * @data: pointer to a network interface device structure
2269 static irqreturn_t ixgbe_intr(int irq, void *data)
2271 struct net_device *netdev = data;
2272 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2273 struct ixgbe_hw *hw = &adapter->hw;
2274 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
2278 * Workaround for silicon errata. Mask the interrupts
2279 * before the read of EICR.
2281 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
2283 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
2284 * therefore no explict interrupt disable is necessary */
2285 eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
2287 /* shared interrupt alert!
2288 * make sure interrupts are enabled because the read will
2289 * have disabled interrupts due to EIAM */
2290 ixgbe_irq_enable(adapter);
2291 return IRQ_NONE; /* Not our interrupt */
2294 if (eicr & IXGBE_EICR_LSC)
2295 ixgbe_check_lsc(adapter);
2297 if (hw->mac.type == ixgbe_mac_82599EB)
2298 ixgbe_check_sfp_event(adapter, eicr);
2300 ixgbe_check_fan_failure(adapter, eicr);
2301 if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
2302 ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC)))
2303 schedule_work(&adapter->check_overtemp_task);
2305 if (napi_schedule_prep(&(q_vector->napi))) {
2306 adapter->tx_ring[0]->total_packets = 0;
2307 adapter->tx_ring[0]->total_bytes = 0;
2308 adapter->rx_ring[0]->total_packets = 0;
2309 adapter->rx_ring[0]->total_bytes = 0;
2310 /* would disable interrupts here but EIAM disabled it */
2311 __napi_schedule(&(q_vector->napi));
2317 static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter)
2319 int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2321 for (i = 0; i < q_vectors; i++) {
2322 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
2323 bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES);
2324 bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES);
2325 q_vector->rxr_count = 0;
2326 q_vector->txr_count = 0;
2331 * ixgbe_request_irq - initialize interrupts
2332 * @adapter: board private structure
2334 * Attempts to configure interrupts using the best available
2335 * capabilities of the hardware and kernel.
2337 static int ixgbe_request_irq(struct ixgbe_adapter *adapter)
2339 struct net_device *netdev = adapter->netdev;
2342 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2343 err = ixgbe_request_msix_irqs(adapter);
2344 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
2345 err = request_irq(adapter->pdev->irq, ixgbe_intr, 0,
2346 netdev->name, netdev);
2348 err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED,
2349 netdev->name, netdev);
2353 e_err(probe, "request_irq failed, Error %d\n", err);
2358 static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
2360 struct net_device *netdev = adapter->netdev;
2362 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2365 q_vectors = adapter->num_msix_vectors;
2368 free_irq(adapter->msix_entries[i].vector, netdev);
2371 for (; i >= 0; i--) {
2372 free_irq(adapter->msix_entries[i].vector,
2373 adapter->q_vector[i]);
2376 ixgbe_reset_q_vectors(adapter);
2378 free_irq(adapter->pdev->irq, netdev);
2383 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
2384 * @adapter: board private structure
2386 static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
2388 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
2389 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
2391 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000);
2392 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0);
2393 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0);
2394 if (adapter->num_vfs > 32)
2395 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0);
2397 IXGBE_WRITE_FLUSH(&adapter->hw);
2398 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2400 for (i = 0; i < adapter->num_msix_vectors; i++)
2401 synchronize_irq(adapter->msix_entries[i].vector);
2403 synchronize_irq(adapter->pdev->irq);
2408 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
2411 static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
2413 struct ixgbe_hw *hw = &adapter->hw;
2415 IXGBE_WRITE_REG(hw, IXGBE_EITR(0),
2416 EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr_param));
2418 ixgbe_set_ivar(adapter, 0, 0, 0);
2419 ixgbe_set_ivar(adapter, 1, 0, 0);
2421 map_vector_to_rxq(adapter, 0, 0);
2422 map_vector_to_txq(adapter, 0, 0);
2424 e_info(hw, "Legacy interrupt IVAR setup done\n");
2428 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset
2429 * @adapter: board private structure
2430 * @ring: structure containing ring specific data
2432 * Configure the Tx descriptor ring after a reset.
2434 static void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter,
2435 struct ixgbe_ring *ring)
2437 struct ixgbe_hw *hw = &adapter->hw;
2438 u64 tdba = ring->dma;
2439 u16 reg_idx = ring->reg_idx;
2441 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx),
2442 (tdba & DMA_BIT_MASK(32)));
2443 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32));
2444 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx),
2445 ring->count * sizeof(union ixgbe_adv_tx_desc));
2446 IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0);
2447 IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0);
2448 ring->head = IXGBE_TDH(reg_idx);
2449 ring->tail = IXGBE_TDT(reg_idx);
2453 static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
2455 struct ixgbe_hw *hw = &adapter->hw;
2459 if (hw->mac.type == ixgbe_mac_82598EB)
2462 /* disable the arbiter while setting MTQC */
2463 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
2464 rttdcs |= IXGBE_RTTDCS_ARBDIS;
2465 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
2467 /* set transmit pool layout */
2468 mask = (IXGBE_FLAG_SRIOV_ENABLED | IXGBE_FLAG_DCB_ENABLED);
2469 switch (adapter->flags & mask) {
2471 case (IXGBE_FLAG_SRIOV_ENABLED):
2472 IXGBE_WRITE_REG(hw, IXGBE_MTQC,
2473 (IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF));
2476 case (IXGBE_FLAG_DCB_ENABLED):
2477 /* We enable 8 traffic classes, DCB only */
2478 IXGBE_WRITE_REG(hw, IXGBE_MTQC,
2479 (IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ));
2483 IXGBE_WRITE_REG(hw, IXGBE_MTQC, IXGBE_MTQC_64Q_1PB);
2487 /* re-enable the arbiter */
2488 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
2489 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
2493 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
2494 * @adapter: board private structure
2496 * Configure the Tx unit of the MAC after a reset.
2498 static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
2502 /* Setup the HW Tx Head and Tail descriptor pointers */
2503 for (i = 0; i < adapter->num_tx_queues; i++)
2504 ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]);
2506 ixgbe_setup_mtqc(adapter);
2509 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
2511 static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter,
2512 struct ixgbe_ring *rx_ring)
2516 struct ixgbe_ring_feature *feature = adapter->ring_feature;
2518 index = rx_ring->reg_idx;
2519 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
2521 mask = (unsigned long) feature[RING_F_RSS].mask;
2522 index = index & mask;
2524 srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(index));
2526 srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK;
2527 srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK;
2529 srrctl |= (IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
2530 IXGBE_SRRCTL_BSIZEHDR_MASK;
2532 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
2533 #if (PAGE_SIZE / 2) > IXGBE_MAX_RXBUFFER
2534 srrctl |= IXGBE_MAX_RXBUFFER >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2536 srrctl |= (PAGE_SIZE / 2) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2538 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
2540 srrctl |= ALIGN(rx_ring->rx_buf_len, 1024) >>
2541 IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2542 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
2545 IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(index), srrctl);
2548 static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
2550 struct ixgbe_hw *hw = &adapter->hw;
2551 static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D,
2552 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE,
2553 0x6A3E67EA, 0x14364D17, 0x3BED200D};
2554 u32 mrqc = 0, reta = 0;
2559 /* Fill out hash function seeds */
2560 for (i = 0; i < 10; i++)
2561 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]);
2563 /* Fill out redirection table */
2564 for (i = 0, j = 0; i < 128; i++, j++) {
2565 if (j == adapter->ring_feature[RING_F_RSS].indices)
2567 /* reta = 4-byte sliding window of
2568 * 0x00..(indices-1)(indices-1)00..etc. */
2569 reta = (reta << 8) | (j * 0x11);
2571 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
2574 /* Disable indicating checksum in descriptor, enables RSS hash */
2575 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
2576 rxcsum |= IXGBE_RXCSUM_PCSD;
2577 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
2579 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
2580 mask = adapter->flags & IXGBE_FLAG_RSS_ENABLED;
2582 mask = adapter->flags & (IXGBE_FLAG_RSS_ENABLED
2583 #ifdef CONFIG_IXGBE_DCB
2584 | IXGBE_FLAG_DCB_ENABLED
2586 | IXGBE_FLAG_SRIOV_ENABLED
2590 case (IXGBE_FLAG_RSS_ENABLED):
2591 mrqc = IXGBE_MRQC_RSSEN;
2593 case (IXGBE_FLAG_SRIOV_ENABLED):
2594 mrqc = IXGBE_MRQC_VMDQEN;
2596 #ifdef CONFIG_IXGBE_DCB
2597 case (IXGBE_FLAG_DCB_ENABLED):
2598 mrqc = IXGBE_MRQC_RT8TCEN;
2600 #endif /* CONFIG_IXGBE_DCB */
2605 /* Perform hash on these packet types */
2606 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4
2607 | IXGBE_MRQC_RSS_FIELD_IPV4_TCP
2608 | IXGBE_MRQC_RSS_FIELD_IPV6
2609 | IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
2611 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
2615 * ixgbe_configure_rscctl - enable RSC for the indicated ring
2616 * @adapter: address of board private structure
2617 * @index: index of ring to set
2619 static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter,
2620 struct ixgbe_ring *ring)
2622 struct ixgbe_hw *hw = &adapter->hw;
2625 u16 reg_idx = ring->reg_idx;
2627 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
2630 rx_buf_len = ring->rx_buf_len;
2631 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx));
2632 rscctrl |= IXGBE_RSCCTL_RSCEN;
2634 * we must limit the number of descriptors so that the
2635 * total size of max desc * buf_len is not greater
2638 if (ring->flags & IXGBE_RING_RX_PS_ENABLED) {
2639 #if (MAX_SKB_FRAGS > 16)
2640 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
2641 #elif (MAX_SKB_FRAGS > 8)
2642 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
2643 #elif (MAX_SKB_FRAGS > 4)
2644 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
2646 rscctrl |= IXGBE_RSCCTL_MAXDESC_1;
2649 if (rx_buf_len < IXGBE_RXBUFFER_4096)
2650 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
2651 else if (rx_buf_len < IXGBE_RXBUFFER_8192)
2652 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
2654 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
2656 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl);
2659 static void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
2660 struct ixgbe_ring *ring)
2662 struct ixgbe_hw *hw = &adapter->hw;
2663 u64 rdba = ring->dma;
2664 u16 reg_idx = ring->reg_idx;
2666 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32)));
2667 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32));
2668 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx),
2669 ring->count * sizeof(union ixgbe_adv_rx_desc));
2670 IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0);
2671 IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0);
2672 ring->head = IXGBE_RDH(reg_idx);
2673 ring->tail = IXGBE_RDT(reg_idx);
2676 static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter)
2678 struct ixgbe_hw *hw = &adapter->hw;
2681 /* PSRTYPE must be initialized in non 82598 adapters */
2682 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
2683 IXGBE_PSRTYPE_UDPHDR |
2684 IXGBE_PSRTYPE_IPV4HDR |
2685 IXGBE_PSRTYPE_L2HDR |
2686 IXGBE_PSRTYPE_IPV6HDR;
2688 if (hw->mac.type == ixgbe_mac_82598EB)
2691 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED)
2692 psrtype |= (adapter->num_rx_queues_per_pool << 29);
2694 for (p = 0; p < adapter->num_rx_pools; p++)
2695 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(adapter->num_vfs + p),
2699 static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter)
2701 struct ixgbe_hw *hw = &adapter->hw;
2704 u32 reg_offset, vf_shift;
2707 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
2710 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
2711 vt_reg_bits = IXGBE_VMD_CTL_VMDQ_EN | IXGBE_VT_CTL_REPLEN;
2712 vt_reg_bits |= (adapter->num_vfs << IXGBE_VT_CTL_POOL_SHIFT);
2713 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl | vt_reg_bits);
2715 vf_shift = adapter->num_vfs % 32;
2716 reg_offset = (adapter->num_vfs > 32) ? 1 : 0;
2718 /* Enable only the PF's pool for Tx/Rx */
2719 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), (1 << vf_shift));
2720 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), 0);
2721 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), (1 << vf_shift));
2722 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), 0);
2723 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
2725 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */
2726 hw->mac.ops.set_vmdq(hw, 0, adapter->num_vfs);
2729 * Set up VF register offsets for selected VT Mode,
2730 * i.e. 32 or 64 VFs for SR-IOV
2732 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
2733 gcr_ext |= IXGBE_GCR_EXT_MSIX_EN;
2734 gcr_ext |= IXGBE_GCR_EXT_VT_MODE_64;
2735 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
2737 /* enable Tx loopback for VF/PF communication */
2738 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
2741 static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter)
2743 struct ixgbe_hw *hw = &adapter->hw;
2744 struct net_device *netdev = adapter->netdev;
2745 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
2747 struct ixgbe_ring *rx_ring;
2751 /* Decide whether to use packet split mode or not */
2752 /* Do not use packet split if we're in SR-IOV Mode */
2753 if (!adapter->num_vfs)
2754 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
2756 /* Set the RX buffer length according to the mode */
2757 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
2758 rx_buf_len = IXGBE_RX_HDR_SIZE;
2760 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
2761 (netdev->mtu <= ETH_DATA_LEN))
2762 rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
2764 rx_buf_len = ALIGN(max_frame + VLAN_HLEN, 1024);
2768 /* adjust max frame to be able to do baby jumbo for FCoE */
2769 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
2770 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE))
2771 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE;
2773 #endif /* IXGBE_FCOE */
2774 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD);
2775 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) {
2776 mhadd &= ~IXGBE_MHADD_MFS_MASK;
2777 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT;
2779 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
2782 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
2783 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */
2784 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
2785 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
2788 * Setup the HW Rx Head and Tail Descriptor Pointers and
2789 * the Base and Length of the Rx Descriptor Ring
2791 for (i = 0; i < adapter->num_rx_queues; i++) {
2792 rx_ring = adapter->rx_ring[i];
2793 rx_ring->rx_buf_len = rx_buf_len;
2795 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)
2796 rx_ring->flags |= IXGBE_RING_RX_PS_ENABLED;
2798 rx_ring->flags &= ~IXGBE_RING_RX_PS_ENABLED;
2801 if (netdev->features & NETIF_F_FCOE_MTU)
2803 struct ixgbe_ring_feature *f;
2804 f = &adapter->ring_feature[RING_F_FCOE];
2805 if ((i >= f->mask) && (i < f->mask + f->indices)) {
2806 rx_ring->flags &= ~IXGBE_RING_RX_PS_ENABLED;
2807 if (rx_buf_len < IXGBE_FCOE_JUMBO_FRAME_SIZE)
2808 rx_ring->rx_buf_len =
2809 IXGBE_FCOE_JUMBO_FRAME_SIZE;
2812 #endif /* IXGBE_FCOE */
2817 static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter)
2819 struct ixgbe_hw *hw = &adapter->hw;
2820 u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
2822 switch (hw->mac.type) {
2823 case ixgbe_mac_82598EB:
2825 * For VMDq support of different descriptor types or
2826 * buffer sizes through the use of multiple SRRCTL
2827 * registers, RDRXCTL.MVMEN must be set to 1
2829 * also, the manual doesn't mention it clearly but DCA hints
2830 * will only use queue 0's tags unless this bit is set. Side
2831 * effects of setting this bit are only that SRRCTL must be
2832 * fully programmed [0..15]
2834 rdrxctl |= IXGBE_RDRXCTL_MVMEN;
2836 case ixgbe_mac_82599EB:
2837 /* Disable RSC for ACK packets */
2838 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU,
2839 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU)));
2840 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
2841 /* hardware requires some bits to be set by default */
2842 rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX);
2843 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
2846 /* We should do nothing since we don't know this hardware */
2850 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
2854 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
2855 * @adapter: board private structure
2857 * Configure the Rx unit of the MAC after a reset.
2859 static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
2861 struct ixgbe_hw *hw = &adapter->hw;
2862 struct ixgbe_ring *rx_ring;
2866 /* disable receives while setting up the descriptors */
2867 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
2868 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
2870 ixgbe_setup_psrtype(adapter);
2871 ixgbe_setup_rdrxctl(adapter);
2873 /* Program MRQC for the distribution of queues */
2874 ixgbe_setup_mrqc(adapter);
2875 ixgbe_configure_virtualization(adapter);
2877 /* set_rx_buffer_len must be called before ring initialization */
2878 ixgbe_set_rx_buffer_len(adapter);
2881 * Setup the HW Rx Head and Tail Descriptor Pointers and
2882 * the Base and Length of the Rx Descriptor Ring
2884 for (i = 0; i < adapter->num_rx_queues; i++) {
2885 rx_ring = adapter->rx_ring[i];
2886 ixgbe_configure_rx_ring(adapter, rx_ring);
2887 ixgbe_configure_srrctl(adapter, rx_ring);
2888 ixgbe_configure_rscctl(adapter, rx_ring);
2893 static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
2895 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2896 struct ixgbe_hw *hw = &adapter->hw;
2897 int pool_ndx = adapter->num_vfs;
2899 /* add VID to filter table */
2900 hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, true);
2903 static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
2905 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2906 struct ixgbe_hw *hw = &adapter->hw;
2907 int pool_ndx = adapter->num_vfs;
2909 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2910 ixgbe_irq_disable(adapter);
2912 vlan_group_set_device(adapter->vlgrp, vid, NULL);
2914 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2915 ixgbe_irq_enable(adapter);
2917 /* remove VID from filter table */
2918 hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, false);
2922 * ixgbe_vlan_filter_disable - helper to disable hw vlan filtering
2923 * @adapter: driver data
2925 static void ixgbe_vlan_filter_disable(struct ixgbe_adapter *adapter)
2927 struct ixgbe_hw *hw = &adapter->hw;
2928 u32 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
2931 switch (hw->mac.type) {
2932 case ixgbe_mac_82598EB:
2933 vlnctrl &= ~IXGBE_VLNCTRL_VFE;
2934 #ifdef CONFIG_IXGBE_DCB
2935 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
2936 vlnctrl &= ~IXGBE_VLNCTRL_VME;
2938 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
2939 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
2941 case ixgbe_mac_82599EB:
2942 vlnctrl &= ~IXGBE_VLNCTRL_VFE;
2943 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
2944 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
2945 #ifdef CONFIG_IXGBE_DCB
2946 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
2949 for (i = 0; i < adapter->num_rx_queues; i++) {
2950 j = adapter->rx_ring[i]->reg_idx;
2951 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
2952 vlnctrl &= ~IXGBE_RXDCTL_VME;
2953 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
2962 * ixgbe_vlan_filter_enable - helper to enable hw vlan filtering
2963 * @adapter: driver data
2965 static void ixgbe_vlan_filter_enable(struct ixgbe_adapter *adapter)
2967 struct ixgbe_hw *hw = &adapter->hw;
2968 u32 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
2971 switch (hw->mac.type) {
2972 case ixgbe_mac_82598EB:
2973 vlnctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE;
2974 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
2975 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
2977 case ixgbe_mac_82599EB:
2978 vlnctrl |= IXGBE_VLNCTRL_VFE;
2979 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
2980 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
2981 for (i = 0; i < adapter->num_rx_queues; i++) {
2982 j = adapter->rx_ring[i]->reg_idx;
2983 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
2984 vlnctrl |= IXGBE_RXDCTL_VME;
2985 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
2993 static void ixgbe_vlan_rx_register(struct net_device *netdev,
2994 struct vlan_group *grp)
2996 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2998 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2999 ixgbe_irq_disable(adapter);
3000 adapter->vlgrp = grp;
3003 * For a DCB driver, always enable VLAN tag stripping so we can
3004 * still receive traffic from a DCB-enabled host even if we're
3007 ixgbe_vlan_filter_enable(adapter);
3009 ixgbe_vlan_rx_add_vid(netdev, 0);
3011 if (!test_bit(__IXGBE_DOWN, &adapter->state))
3012 ixgbe_irq_enable(adapter);
3015 static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
3017 ixgbe_vlan_rx_register(adapter->netdev, adapter->vlgrp);
3019 if (adapter->vlgrp) {
3021 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
3022 if (!vlan_group_get_device(adapter->vlgrp, vid))
3024 ixgbe_vlan_rx_add_vid(adapter->netdev, vid);
3030 * ixgbe_write_uc_addr_list - write unicast addresses to RAR table
3031 * @netdev: network interface device structure
3033 * Writes unicast address list to the RAR table.
3034 * Returns: -ENOMEM on failure/insufficient address space
3035 * 0 on no addresses written
3036 * X on writing X addresses to the RAR table
3038 static int ixgbe_write_uc_addr_list(struct net_device *netdev)
3040 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3041 struct ixgbe_hw *hw = &adapter->hw;
3042 unsigned int vfn = adapter->num_vfs;
3043 unsigned int rar_entries = hw->mac.num_rar_entries - (vfn + 1);
3046 /* return ENOMEM indicating insufficient memory for addresses */
3047 if (netdev_uc_count(netdev) > rar_entries)
3050 if (!netdev_uc_empty(netdev) && rar_entries) {
3051 struct netdev_hw_addr *ha;
3052 /* return error if we do not support writing to RAR table */
3053 if (!hw->mac.ops.set_rar)
3056 netdev_for_each_uc_addr(ha, netdev) {
3059 hw->mac.ops.set_rar(hw, rar_entries--, ha->addr,
3064 /* write the addresses in reverse order to avoid write combining */
3065 for (; rar_entries > 0 ; rar_entries--)
3066 hw->mac.ops.clear_rar(hw, rar_entries);
3072 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
3073 * @netdev: network interface device structure
3075 * The set_rx_method entry point is called whenever the unicast/multicast
3076 * address list or the network interface flags are updated. This routine is
3077 * responsible for configuring the hardware for proper unicast, multicast and
3080 void ixgbe_set_rx_mode(struct net_device *netdev)
3082 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3083 struct ixgbe_hw *hw = &adapter->hw;
3084 u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE;
3087 /* Check for Promiscuous and All Multicast modes */
3089 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
3091 /* set all bits that we expect to always be set */
3092 fctrl |= IXGBE_FCTRL_BAM;
3093 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
3094 fctrl |= IXGBE_FCTRL_PMCF;
3096 /* clear the bits we are changing the status of */
3097 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
3099 if (netdev->flags & IFF_PROMISC) {
3100 hw->addr_ctrl.user_set_promisc = true;
3101 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
3102 vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_MPE);
3103 /* don't hardware filter vlans in promisc mode */
3104 ixgbe_vlan_filter_disable(adapter);
3106 if (netdev->flags & IFF_ALLMULTI) {
3107 fctrl |= IXGBE_FCTRL_MPE;
3108 vmolr |= IXGBE_VMOLR_MPE;
3111 * Write addresses to the MTA, if the attempt fails
3112 * then we should just turn on promiscous mode so
3113 * that we can at least receive multicast traffic
3115 hw->mac.ops.update_mc_addr_list(hw, netdev);
3116 vmolr |= IXGBE_VMOLR_ROMPE;
3118 ixgbe_vlan_filter_enable(adapter);
3119 hw->addr_ctrl.user_set_promisc = false;
3121 * Write addresses to available RAR registers, if there is not
3122 * sufficient space to store all the addresses then enable
3123 * unicast promiscous mode
3125 count = ixgbe_write_uc_addr_list(netdev);
3127 fctrl |= IXGBE_FCTRL_UPE;
3128 vmolr |= IXGBE_VMOLR_ROPE;
3132 if (adapter->num_vfs) {
3133 ixgbe_restore_vf_multicasts(adapter);
3134 vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(adapter->num_vfs)) &
3135 ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE |
3137 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(adapter->num_vfs), vmolr);
3140 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
3143 static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
3146 struct ixgbe_q_vector *q_vector;
3147 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
3149 /* legacy and MSI only use one vector */
3150 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
3153 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
3154 struct napi_struct *napi;
3155 q_vector = adapter->q_vector[q_idx];
3156 napi = &q_vector->napi;
3157 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
3158 if (!q_vector->rxr_count || !q_vector->txr_count) {
3159 if (q_vector->txr_count == 1)
3160 napi->poll = &ixgbe_clean_txonly;
3161 else if (q_vector->rxr_count == 1)
3162 napi->poll = &ixgbe_clean_rxonly;
3170 static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
3173 struct ixgbe_q_vector *q_vector;
3174 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
3176 /* legacy and MSI only use one vector */
3177 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
3180 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
3181 q_vector = adapter->q_vector[q_idx];
3182 napi_disable(&q_vector->napi);
3186 #ifdef CONFIG_IXGBE_DCB
3188 * ixgbe_configure_dcb - Configure DCB hardware
3189 * @adapter: ixgbe adapter struct
3191 * This is called by the driver on open to configure the DCB hardware.
3192 * This is also called by the gennetlink interface when reconfiguring
3195 static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
3197 struct ixgbe_hw *hw = &adapter->hw;
3201 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) {
3202 if (hw->mac.type == ixgbe_mac_82598EB)
3203 netif_set_gso_max_size(adapter->netdev, 65536);
3207 if (hw->mac.type == ixgbe_mac_82598EB)
3208 netif_set_gso_max_size(adapter->netdev, 32768);
3210 ixgbe_dcb_check_config(&adapter->dcb_cfg);
3211 ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_TX_CONFIG);
3212 ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_RX_CONFIG);
3214 /* reconfigure the hardware */
3215 ixgbe_dcb_hw_config(&adapter->hw, &adapter->dcb_cfg);
3217 for (i = 0; i < adapter->num_tx_queues; i++) {
3218 j = adapter->tx_ring[i]->reg_idx;
3219 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
3220 /* PThresh workaround for Tx hang with DFP enabled. */
3222 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
3224 /* Enable VLAN tag insert/strip */
3225 ixgbe_vlan_filter_enable(adapter);
3227 hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true);
3231 static void ixgbe_configure(struct ixgbe_adapter *adapter)
3233 struct net_device *netdev = adapter->netdev;
3234 struct ixgbe_hw *hw = &adapter->hw;
3237 ixgbe_set_rx_mode(netdev);
3239 ixgbe_restore_vlan(adapter);
3240 #ifdef CONFIG_IXGBE_DCB
3241 ixgbe_configure_dcb(adapter);
3245 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
3246 ixgbe_configure_fcoe(adapter);
3248 #endif /* IXGBE_FCOE */
3249 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
3250 for (i = 0; i < adapter->num_tx_queues; i++)
3251 adapter->tx_ring[i]->atr_sample_rate =
3252 adapter->atr_sample_rate;
3253 ixgbe_init_fdir_signature_82599(hw, adapter->fdir_pballoc);
3254 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
3255 ixgbe_init_fdir_perfect_82599(hw, adapter->fdir_pballoc);
3258 ixgbe_configure_tx(adapter);
3259 ixgbe_configure_rx(adapter);
3260 for (i = 0; i < adapter->num_rx_queues; i++)
3261 ixgbe_alloc_rx_buffers(adapter, adapter->rx_ring[i],
3262 (adapter->rx_ring[i]->count - 1));
3265 static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
3267 switch (hw->phy.type) {
3268 case ixgbe_phy_sfp_avago:
3269 case ixgbe_phy_sfp_ftl:
3270 case ixgbe_phy_sfp_intel:
3271 case ixgbe_phy_sfp_unknown:
3272 case ixgbe_phy_sfp_passive_tyco:
3273 case ixgbe_phy_sfp_passive_unknown:
3274 case ixgbe_phy_sfp_active_unknown:
3275 case ixgbe_phy_sfp_ftl_active:
3283 * ixgbe_sfp_link_config - set up SFP+ link
3284 * @adapter: pointer to private adapter struct
3286 static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter)
3288 struct ixgbe_hw *hw = &adapter->hw;
3290 if (hw->phy.multispeed_fiber) {
3292 * In multispeed fiber setups, the device may not have
3293 * had a physical connection when the driver loaded.
3294 * If that's the case, the initial link configuration
3295 * couldn't get the MAC into 10G or 1G mode, so we'll
3296 * never have a link status change interrupt fire.
3297 * We need to try and force an autonegotiation
3298 * session, then bring up link.
3300 hw->mac.ops.setup_sfp(hw);
3301 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK))
3302 schedule_work(&adapter->multispeed_fiber_task);
3305 * Direct Attach Cu and non-multispeed fiber modules
3306 * still need to be configured properly prior to
3309 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_MOD_TASK))
3310 schedule_work(&adapter->sfp_config_module_task);
3315 * ixgbe_non_sfp_link_config - set up non-SFP+ link
3316 * @hw: pointer to private hardware struct
3318 * Returns 0 on success, negative on failure
3320 static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw)
3323 bool negotiation, link_up = false;
3324 u32 ret = IXGBE_ERR_LINK_SETUP;
3326 if (hw->mac.ops.check_link)
3327 ret = hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
3332 if (hw->mac.ops.get_link_capabilities)
3333 ret = hw->mac.ops.get_link_capabilities(hw, &autoneg, &negotiation);
3337 if (hw->mac.ops.setup_link)
3338 ret = hw->mac.ops.setup_link(hw, autoneg, negotiation, link_up);
3343 #define IXGBE_MAX_RX_DESC_POLL 10
3344 static inline void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter,
3347 int j = adapter->rx_ring[rxr]->reg_idx;
3350 for (k = 0; k < IXGBE_MAX_RX_DESC_POLL; k++) {
3351 if (IXGBE_READ_REG(&adapter->hw,
3352 IXGBE_RXDCTL(j)) & IXGBE_RXDCTL_ENABLE)
3357 if (k >= IXGBE_MAX_RX_DESC_POLL) {
3358 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within "
3359 "the polling period\n", rxr);
3361 ixgbe_release_rx_desc(&adapter->hw, adapter->rx_ring[rxr],
3362 (adapter->rx_ring[rxr]->count - 1));
3365 static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
3367 struct ixgbe_hw *hw = &adapter->hw;
3369 int num_rx_rings = adapter->num_rx_queues;
3376 ixgbe_get_hw_control(adapter);
3378 if ((adapter->flags & IXGBE_FLAG_MSIX_ENABLED) ||
3379 (adapter->flags & IXGBE_FLAG_MSI_ENABLED)) {
3380 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
3381 gpie = (IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_EIAME |
3382 IXGBE_GPIE_PBA_SUPPORT | IXGBE_GPIE_OCD);
3387 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
3388 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
3389 gpie |= IXGBE_GPIE_VTMODE_64;
3391 /* XXX: to interrupt immediately for EICS writes, enable this */
3392 /* gpie |= IXGBE_GPIE_EIMEN; */
3393 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
3396 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
3398 * use EIAM to auto-mask when MSI-X interrupt is asserted
3399 * this saves a register write for every interrupt
3401 switch (hw->mac.type) {
3402 case ixgbe_mac_82598EB:
3403 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
3406 case ixgbe_mac_82599EB:
3407 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
3408 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
3412 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
3413 * specifically only auto mask tx and rx interrupts */
3414 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
3417 /* Enable Thermal over heat sensor interrupt */
3418 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) {
3419 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
3420 gpie |= IXGBE_SDP0_GPIEN;
3421 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
3424 /* Enable fan failure interrupt if media type is copper */
3425 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
3426 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
3427 gpie |= IXGBE_SDP1_GPIEN;
3428 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
3431 if (hw->mac.type == ixgbe_mac_82599EB) {
3432 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
3433 gpie |= IXGBE_SDP1_GPIEN;
3434 gpie |= IXGBE_SDP2_GPIEN;
3435 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
3438 if (hw->mac.type == ixgbe_mac_82599EB) {
3439 /* DMATXCTL.EN must be set after all Tx queue config is done */
3440 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
3441 dmatxctl |= IXGBE_DMATXCTL_TE;
3442 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
3444 for (i = 0; i < adapter->num_tx_queues; i++) {
3445 j = adapter->tx_ring[i]->reg_idx;
3446 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
3447 if (adapter->rx_itr_setting == 0) {
3448 /* cannot set wthresh when itr==0 */
3449 txdctl &= ~0x007F0000;
3451 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
3452 txdctl |= (8 << 16);
3454 txdctl |= IXGBE_TXDCTL_ENABLE;
3455 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
3456 if (hw->mac.type == ixgbe_mac_82599EB) {
3458 /* poll for Tx Enable ready */
3461 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
3462 } while (--wait_loop &&
3463 !(txdctl & IXGBE_TXDCTL_ENABLE));
3465 e_err(drv, "Could not enable Tx Queue %d\n", j);
3469 for (i = 0; i < num_rx_rings; i++) {
3470 j = adapter->rx_ring[i]->reg_idx;
3471 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
3472 /* enable PTHRESH=32 descriptors (half the internal cache)
3473 * and HTHRESH=0 descriptors (to minimize latency on fetch),
3474 * this also removes a pesky rx_no_buffer_count increment */
3476 rxdctl |= IXGBE_RXDCTL_ENABLE;
3477 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), rxdctl);
3478 if (hw->mac.type == ixgbe_mac_82599EB)
3479 ixgbe_rx_desc_queue_enable(adapter, i);
3481 /* enable all receives */
3482 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3483 if (hw->mac.type == ixgbe_mac_82598EB)
3484 rxdctl |= (IXGBE_RXCTRL_DMBYPS | IXGBE_RXCTRL_RXEN);
3486 rxdctl |= IXGBE_RXCTRL_RXEN;
3487 hw->mac.ops.enable_rx_dma(hw, rxdctl);
3489 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
3490 ixgbe_configure_msix(adapter);
3492 ixgbe_configure_msi_and_legacy(adapter);
3494 /* enable the optics */
3495 if (hw->phy.multispeed_fiber)
3496 hw->mac.ops.enable_tx_laser(hw);
3498 clear_bit(__IXGBE_DOWN, &adapter->state);
3499 ixgbe_napi_enable_all(adapter);
3501 /* clear any pending interrupts, may auto mask */
3502 IXGBE_READ_REG(hw, IXGBE_EICR);
3504 ixgbe_irq_enable(adapter);
3507 * If this adapter has a fan, check to see if we had a failure
3508 * before we enabled the interrupt.
3510 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
3511 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
3512 if (esdp & IXGBE_ESDP_SDP1)
3513 e_crit(drv, "Fan has stopped, replace the adapter\n");
3517 * For hot-pluggable SFP+ devices, a new SFP+ module may have
3518 * arrived before interrupts were enabled but after probe. Such
3519 * devices wouldn't have their type identified yet. We need to
3520 * kick off the SFP+ module setup first, then try to bring up link.
3521 * If we're not hot-pluggable SFP+, we just need to configure link
3524 if (hw->phy.type == ixgbe_phy_unknown) {
3525 err = hw->phy.ops.identify(hw);
3526 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
3528 * Take the device down and schedule the sfp tasklet
3529 * which will unregister_netdev and log it.
3531 ixgbe_down(adapter);
3532 schedule_work(&adapter->sfp_config_module_task);
3537 if (ixgbe_is_sfp(hw)) {
3538 ixgbe_sfp_link_config(adapter);
3540 err = ixgbe_non_sfp_link_config(hw);
3542 e_err(probe, "link_config FAILED %d\n", err);
3545 for (i = 0; i < adapter->num_tx_queues; i++)
3546 set_bit(__IXGBE_FDIR_INIT_DONE,
3547 &(adapter->tx_ring[i]->reinit_state));
3549 /* enable transmits */
3550 netif_tx_start_all_queues(adapter->netdev);
3552 /* bring the link up in the watchdog, this could race with our first
3553 * link up interrupt but shouldn't be a problem */
3554 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
3555 adapter->link_check_timeout = jiffies;
3556 mod_timer(&adapter->watchdog_timer, jiffies);
3558 /* Set PF Reset Done bit so PF/VF Mail Ops can work */
3559 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
3560 ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD;
3561 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
3566 void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
3568 WARN_ON(in_interrupt());
3569 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
3571 ixgbe_down(adapter);
3573 * If SR-IOV enabled then wait a bit before bringing the adapter
3574 * back up to give the VFs time to respond to the reset. The
3575 * two second wait is based upon the watchdog timer cycle in
3578 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
3581 clear_bit(__IXGBE_RESETTING, &adapter->state);
3584 int ixgbe_up(struct ixgbe_adapter *adapter)
3586 /* hardware has been reset, we need to reload some things */
3587 ixgbe_configure(adapter);
3589 return ixgbe_up_complete(adapter);
3592 void ixgbe_reset(struct ixgbe_adapter *adapter)
3594 struct ixgbe_hw *hw = &adapter->hw;
3597 err = hw->mac.ops.init_hw(hw);
3600 case IXGBE_ERR_SFP_NOT_PRESENT:
3602 case IXGBE_ERR_MASTER_REQUESTS_PENDING:
3603 e_dev_err("master disable timed out\n");
3605 case IXGBE_ERR_EEPROM_VERSION:
3606 /* We are running on a pre-production device, log a warning */
3607 e_dev_warn("This device is a pre-production adapter/LOM. "
3608 "Please be aware there may be issuesassociated with "
3609 "your hardware. If you are experiencing problems "
3610 "please contact your Intel or hardware "
3611 "representative who provided you with this "
3615 e_dev_err("Hardware Error: %d\n", err);
3618 /* reprogram the RAR[0] in case user changed it. */
3619 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
3624 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
3625 * @adapter: board private structure
3626 * @rx_ring: ring to free buffers from
3628 static void ixgbe_clean_rx_ring(struct ixgbe_adapter *adapter,
3629 struct ixgbe_ring *rx_ring)
3631 struct pci_dev *pdev = adapter->pdev;
3635 /* Free all the Rx ring sk_buffs */
3637 for (i = 0; i < rx_ring->count; i++) {
3638 struct ixgbe_rx_buffer *rx_buffer_info;
3640 rx_buffer_info = &rx_ring->rx_buffer_info[i];
3641 if (rx_buffer_info->dma) {
3642 dma_unmap_single(&pdev->dev, rx_buffer_info->dma,
3643 rx_ring->rx_buf_len,
3645 rx_buffer_info->dma = 0;
3647 if (rx_buffer_info->skb) {
3648 struct sk_buff *skb = rx_buffer_info->skb;
3649 rx_buffer_info->skb = NULL;
3651 struct sk_buff *this = skb;
3652 if (IXGBE_RSC_CB(this)->delay_unmap) {
3653 dma_unmap_single(&pdev->dev,
3654 IXGBE_RSC_CB(this)->dma,
3655 rx_ring->rx_buf_len,
3657 IXGBE_RSC_CB(this)->dma = 0;
3658 IXGBE_RSC_CB(skb)->delay_unmap = false;
3661 dev_kfree_skb(this);
3664 if (!rx_buffer_info->page)
3666 if (rx_buffer_info->page_dma) {
3667 dma_unmap_page(&pdev->dev, rx_buffer_info->page_dma,
3668 PAGE_SIZE / 2, DMA_FROM_DEVICE);
3669 rx_buffer_info->page_dma = 0;
3671 put_page(rx_buffer_info->page);
3672 rx_buffer_info->page = NULL;
3673 rx_buffer_info->page_offset = 0;
3676 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
3677 memset(rx_ring->rx_buffer_info, 0, size);
3679 /* Zero out the descriptor ring */
3680 memset(rx_ring->desc, 0, rx_ring->size);
3682 rx_ring->next_to_clean = 0;
3683 rx_ring->next_to_use = 0;
3686 writel(0, adapter->hw.hw_addr + rx_ring->head);
3688 writel(0, adapter->hw.hw_addr + rx_ring->tail);
3692 * ixgbe_clean_tx_ring - Free Tx Buffers
3693 * @adapter: board private structure
3694 * @tx_ring: ring to be cleaned
3696 static void ixgbe_clean_tx_ring(struct ixgbe_adapter *adapter,
3697 struct ixgbe_ring *tx_ring)
3699 struct ixgbe_tx_buffer *tx_buffer_info;
3703 /* Free all the Tx ring sk_buffs */
3705 for (i = 0; i < tx_ring->count; i++) {
3706 tx_buffer_info = &tx_ring->tx_buffer_info[i];
3707 ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info);
3710 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
3711 memset(tx_ring->tx_buffer_info, 0, size);
3713 /* Zero out the descriptor ring */
3714 memset(tx_ring->desc, 0, tx_ring->size);
3716 tx_ring->next_to_use = 0;
3717 tx_ring->next_to_clean = 0;
3720 writel(0, adapter->hw.hw_addr + tx_ring->head);
3722 writel(0, adapter->hw.hw_addr + tx_ring->tail);
3726 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
3727 * @adapter: board private structure
3729 static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter)
3733 for (i = 0; i < adapter->num_rx_queues; i++)
3734 ixgbe_clean_rx_ring(adapter, adapter->rx_ring[i]);
3738 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
3739 * @adapter: board private structure
3741 static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
3745 for (i = 0; i < adapter->num_tx_queues; i++)
3746 ixgbe_clean_tx_ring(adapter, adapter->tx_ring[i]);
3749 void ixgbe_down(struct ixgbe_adapter *adapter)
3751 struct net_device *netdev = adapter->netdev;
3752 struct ixgbe_hw *hw = &adapter->hw;
3757 /* signal that we are down to the interrupt handler */
3758 set_bit(__IXGBE_DOWN, &adapter->state);
3760 /* disable receive for all VFs and wait one second */
3761 if (adapter->num_vfs) {
3762 /* ping all the active vfs to let them know we are going down */
3763 ixgbe_ping_all_vfs(adapter);
3765 /* Disable all VFTE/VFRE TX/RX */
3766 ixgbe_disable_tx_rx(adapter);
3768 /* Mark all the VFs as inactive */
3769 for (i = 0 ; i < adapter->num_vfs; i++)
3770 adapter->vfinfo[i].clear_to_send = 0;
3773 /* disable receives */
3774 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3775 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
3777 IXGBE_WRITE_FLUSH(hw);
3780 netif_tx_stop_all_queues(netdev);
3782 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
3783 del_timer_sync(&adapter->sfp_timer);
3784 del_timer_sync(&adapter->watchdog_timer);
3785 cancel_work_sync(&adapter->watchdog_task);
3787 netif_carrier_off(netdev);
3788 netif_tx_disable(netdev);
3790 ixgbe_irq_disable(adapter);
3792 ixgbe_napi_disable_all(adapter);
3794 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
3795 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
3796 cancel_work_sync(&adapter->fdir_reinit_task);
3798 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
3799 cancel_work_sync(&adapter->check_overtemp_task);
3801 /* disable transmits in the hardware now that interrupts are off */
3802 for (i = 0; i < adapter->num_tx_queues; i++) {
3803 j = adapter->tx_ring[i]->reg_idx;
3804 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
3805 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j),
3806 (txdctl & ~IXGBE_TXDCTL_ENABLE));
3808 /* Disable the Tx DMA engine on 82599 */
3809 if (hw->mac.type == ixgbe_mac_82599EB)
3810 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL,
3811 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
3812 ~IXGBE_DMATXCTL_TE));
3814 /* power down the optics */
3815 if (hw->phy.multispeed_fiber)
3816 hw->mac.ops.disable_tx_laser(hw);
3818 /* clear n-tuple filters that are cached */
3819 ethtool_ntuple_flush(netdev);
3821 if (!pci_channel_offline(adapter->pdev))
3822 ixgbe_reset(adapter);
3823 ixgbe_clean_all_tx_rings(adapter);
3824 ixgbe_clean_all_rx_rings(adapter);
3826 #ifdef CONFIG_IXGBE_DCA
3827 /* since we reset the hardware DCA settings were cleared */
3828 ixgbe_setup_dca(adapter);
3833 * ixgbe_poll - NAPI Rx polling callback
3834 * @napi: structure for representing this polling device
3835 * @budget: how many packets driver is allowed to clean
3837 * This function is used for legacy and MSI, NAPI mode
3839 static int ixgbe_poll(struct napi_struct *napi, int budget)
3841 struct ixgbe_q_vector *q_vector =
3842 container_of(napi, struct ixgbe_q_vector, napi);
3843 struct ixgbe_adapter *adapter = q_vector->adapter;
3844 int tx_clean_complete, work_done = 0;
3846 #ifdef CONFIG_IXGBE_DCA
3847 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
3848 ixgbe_update_tx_dca(adapter, adapter->tx_ring[0]);
3849 ixgbe_update_rx_dca(adapter, adapter->rx_ring[0]);
3853 tx_clean_complete = ixgbe_clean_tx_irq(q_vector, adapter->tx_ring[0]);
3854 ixgbe_clean_rx_irq(q_vector, adapter->rx_ring[0], &work_done, budget);
3856 if (!tx_clean_complete)
3859 /* If budget not fully consumed, exit the polling mode */
3860 if (work_done < budget) {
3861 napi_complete(napi);
3862 if (adapter->rx_itr_setting & 1)
3863 ixgbe_set_itr(adapter);
3864 if (!test_bit(__IXGBE_DOWN, &adapter->state))
3865 ixgbe_irq_enable_queues(adapter, IXGBE_EIMS_RTX_QUEUE);
3871 * ixgbe_tx_timeout - Respond to a Tx Hang
3872 * @netdev: network interface device structure
3874 static void ixgbe_tx_timeout(struct net_device *netdev)
3876 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3878 /* Do the reset outside of interrupt context */
3879 schedule_work(&adapter->reset_task);
3882 static void ixgbe_reset_task(struct work_struct *work)
3884 struct ixgbe_adapter *adapter;
3885 adapter = container_of(work, struct ixgbe_adapter, reset_task);
3887 /* If we're already down or resetting, just bail */
3888 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
3889 test_bit(__IXGBE_RESETTING, &adapter->state))
3892 adapter->tx_timeout_count++;
3894 ixgbe_dump(adapter);
3895 netdev_err(adapter->netdev, "Reset adapter\n");
3896 ixgbe_reinit_locked(adapter);
3899 #ifdef CONFIG_IXGBE_DCB
3900 static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter)
3903 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_DCB];
3905 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
3909 adapter->num_rx_queues = f->indices;
3910 adapter->num_tx_queues = f->indices;
3918 * ixgbe_set_rss_queues: Allocate queues for RSS
3919 * @adapter: board private structure to initialize
3921 * This is our "base" multiqueue mode. RSS (Receive Side Scaling) will try
3922 * to allocate one Rx queue per CPU, and if available, one Tx queue per CPU.
3925 static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter)
3928 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_RSS];
3930 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
3932 adapter->num_rx_queues = f->indices;
3933 adapter->num_tx_queues = f->indices;
3943 * ixgbe_set_fdir_queues: Allocate queues for Flow Director
3944 * @adapter: board private structure to initialize
3946 * Flow Director is an advanced Rx filter, attempting to get Rx flows back
3947 * to the original CPU that initiated the Tx session. This runs in addition
3948 * to RSS, so if a packet doesn't match an FDIR filter, we can still spread the
3949 * Rx load across CPUs using RSS.
3952 static bool inline ixgbe_set_fdir_queues(struct ixgbe_adapter *adapter)
3955 struct ixgbe_ring_feature *f_fdir = &adapter->ring_feature[RING_F_FDIR];
3957 f_fdir->indices = min((int)num_online_cpus(), f_fdir->indices);
3960 /* Flow Director must have RSS enabled */
3961 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
3962 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
3963 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)))) {
3964 adapter->num_tx_queues = f_fdir->indices;
3965 adapter->num_rx_queues = f_fdir->indices;
3968 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
3969 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
3976 * ixgbe_set_fcoe_queues: Allocate queues for Fiber Channel over Ethernet (FCoE)
3977 * @adapter: board private structure to initialize
3979 * FCoE RX FCRETA can use up to 8 rx queues for up to 8 different exchanges.
3980 * The ring feature mask is not used as a mask for FCoE, as it can take any 8
3981 * rx queues out of the max number of rx queues, instead, it is used as the
3982 * index of the first rx queue used by FCoE.
3985 static inline bool ixgbe_set_fcoe_queues(struct ixgbe_adapter *adapter)
3988 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
3990 f->indices = min((int)num_online_cpus(), f->indices);
3991 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
3992 adapter->num_rx_queues = 1;
3993 adapter->num_tx_queues = 1;
3994 #ifdef CONFIG_IXGBE_DCB
3995 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
3996 e_info(probe, "FCoE enabled with DCB\n");
3997 ixgbe_set_dcb_queues(adapter);
4000 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
4001 e_info(probe, "FCoE enabled with RSS\n");
4002 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4003 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
4004 ixgbe_set_fdir_queues(adapter);
4006 ixgbe_set_rss_queues(adapter);
4008 /* adding FCoE rx rings to the end */
4009 f->mask = adapter->num_rx_queues;
4010 adapter->num_rx_queues += f->indices;
4011 adapter->num_tx_queues += f->indices;
4019 #endif /* IXGBE_FCOE */
4021 * ixgbe_set_sriov_queues: Allocate queues for IOV use
4022 * @adapter: board private structure to initialize
4024 * IOV doesn't actually use anything, so just NAK the
4025 * request for now and let the other queue routines
4026 * figure out what to do.
4028 static inline bool ixgbe_set_sriov_queues(struct ixgbe_adapter *adapter)
4034 * ixgbe_set_num_queues: Allocate queues for device, feature dependant
4035 * @adapter: board private structure to initialize
4037 * This is the top level queue allocation routine. The order here is very
4038 * important, starting with the "most" number of features turned on at once,
4039 * and ending with the smallest set of features. This way large combinations
4040 * can be allocated if they're turned on, and smaller combinations are the
4041 * fallthrough conditions.
4044 static void ixgbe_set_num_queues(struct ixgbe_adapter *adapter)
4046 /* Start with base case */
4047 adapter->num_rx_queues = 1;
4048 adapter->num_tx_queues = 1;
4049 adapter->num_rx_pools = adapter->num_rx_queues;
4050 adapter->num_rx_queues_per_pool = 1;
4052 if (ixgbe_set_sriov_queues(adapter))
4056 if (ixgbe_set_fcoe_queues(adapter))
4059 #endif /* IXGBE_FCOE */
4060 #ifdef CONFIG_IXGBE_DCB
4061 if (ixgbe_set_dcb_queues(adapter))
4065 if (ixgbe_set_fdir_queues(adapter))
4068 if (ixgbe_set_rss_queues(adapter))
4071 /* fallback to base case */
4072 adapter->num_rx_queues = 1;
4073 adapter->num_tx_queues = 1;
4076 /* Notify the stack of the (possibly) reduced Tx Queue count. */
4077 netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues);
4080 static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter,
4083 int err, vector_threshold;
4085 /* We'll want at least 3 (vector_threshold):
4088 * 3) Other (Link Status Change, etc.)
4089 * 4) TCP Timer (optional)
4091 vector_threshold = MIN_MSIX_COUNT;
4093 /* The more we get, the more we will assign to Tx/Rx Cleanup
4094 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
4095 * Right now, we simply care about how many we'll get; we'll
4096 * set them up later while requesting irq's.
4098 while (vectors >= vector_threshold) {
4099 err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
4101 if (!err) /* Success in acquiring all requested vectors. */
4104 vectors = 0; /* Nasty failure, quit now */
4105 else /* err == number of vectors we should try again with */
4109 if (vectors < vector_threshold) {
4110 /* Can't allocate enough MSI-X interrupts? Oh well.
4111 * This just means we'll go with either a single MSI
4112 * vector or fall back to legacy interrupts.
4114 netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev,
4115 "Unable to allocate MSI-X interrupts\n");
4116 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
4117 kfree(adapter->msix_entries);
4118 adapter->msix_entries = NULL;
4120 adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */
4122 * Adjust for only the vectors we'll use, which is minimum
4123 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
4124 * vectors we were allocated.
4126 adapter->num_msix_vectors = min(vectors,
4127 adapter->max_msix_q_vectors + NON_Q_VECTORS);
4132 * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS
4133 * @adapter: board private structure to initialize
4135 * Cache the descriptor ring offsets for RSS to the assigned rings.
4138 static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter)
4143 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
4144 for (i = 0; i < adapter->num_rx_queues; i++)
4145 adapter->rx_ring[i]->reg_idx = i;
4146 for (i = 0; i < adapter->num_tx_queues; i++)
4147 adapter->tx_ring[i]->reg_idx = i;
4156 #ifdef CONFIG_IXGBE_DCB
4158 * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB
4159 * @adapter: board private structure to initialize
4161 * Cache the descriptor ring offsets for DCB to the assigned rings.
4164 static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter)
4168 int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
4170 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
4171 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
4172 /* the number of queues is assumed to be symmetric */
4173 for (i = 0; i < dcb_i; i++) {
4174 adapter->rx_ring[i]->reg_idx = i << 3;
4175 adapter->tx_ring[i]->reg_idx = i << 2;
4178 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
4181 * Tx TC0 starts at: descriptor queue 0
4182 * Tx TC1 starts at: descriptor queue 32
4183 * Tx TC2 starts at: descriptor queue 64
4184 * Tx TC3 starts at: descriptor queue 80
4185 * Tx TC4 starts at: descriptor queue 96
4186 * Tx TC5 starts at: descriptor queue 104
4187 * Tx TC6 starts at: descriptor queue 112
4188 * Tx TC7 starts at: descriptor queue 120
4190 * Rx TC0-TC7 are offset by 16 queues each
4192 for (i = 0; i < 3; i++) {
4193 adapter->tx_ring[i]->reg_idx = i << 5;
4194 adapter->rx_ring[i]->reg_idx = i << 4;
4196 for ( ; i < 5; i++) {
4197 adapter->tx_ring[i]->reg_idx =
4199 adapter->rx_ring[i]->reg_idx = i << 4;
4201 for ( ; i < dcb_i; i++) {
4202 adapter->tx_ring[i]->reg_idx =
4204 adapter->rx_ring[i]->reg_idx = i << 4;
4208 } else if (dcb_i == 4) {
4210 * Tx TC0 starts at: descriptor queue 0
4211 * Tx TC1 starts at: descriptor queue 64
4212 * Tx TC2 starts at: descriptor queue 96
4213 * Tx TC3 starts at: descriptor queue 112
4215 * Rx TC0-TC3 are offset by 32 queues each
4217 adapter->tx_ring[0]->reg_idx = 0;
4218 adapter->tx_ring[1]->reg_idx = 64;
4219 adapter->tx_ring[2]->reg_idx = 96;
4220 adapter->tx_ring[3]->reg_idx = 112;
4221 for (i = 0 ; i < dcb_i; i++)
4222 adapter->rx_ring[i]->reg_idx = i << 5;
4240 * ixgbe_cache_ring_fdir - Descriptor ring to register mapping for Flow Director
4241 * @adapter: board private structure to initialize
4243 * Cache the descriptor ring offsets for Flow Director to the assigned rings.
4246 static bool inline ixgbe_cache_ring_fdir(struct ixgbe_adapter *adapter)
4251 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
4252 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4253 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))) {
4254 for (i = 0; i < adapter->num_rx_queues; i++)
4255 adapter->rx_ring[i]->reg_idx = i;
4256 for (i = 0; i < adapter->num_tx_queues; i++)
4257 adapter->tx_ring[i]->reg_idx = i;
4266 * ixgbe_cache_ring_fcoe - Descriptor ring to register mapping for the FCoE
4267 * @adapter: board private structure to initialize
4269 * Cache the descriptor ring offsets for FCoE mode to the assigned rings.
4272 static inline bool ixgbe_cache_ring_fcoe(struct ixgbe_adapter *adapter)
4274 int i, fcoe_rx_i = 0, fcoe_tx_i = 0;
4276 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
4278 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
4279 #ifdef CONFIG_IXGBE_DCB
4280 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
4281 struct ixgbe_fcoe *fcoe = &adapter->fcoe;
4283 ixgbe_cache_ring_dcb(adapter);
4284 /* find out queues in TC for FCoE */
4285 fcoe_rx_i = adapter->rx_ring[fcoe->tc]->reg_idx + 1;
4286 fcoe_tx_i = adapter->tx_ring[fcoe->tc]->reg_idx + 1;
4288 * In 82599, the number of Tx queues for each traffic
4289 * class for both 8-TC and 4-TC modes are:
4290 * TCs : TC0 TC1 TC2 TC3 TC4 TC5 TC6 TC7
4291 * 8 TCs: 32 32 16 16 8 8 8 8
4292 * 4 TCs: 64 64 32 32
4293 * We have max 8 queues for FCoE, where 8 the is
4294 * FCoE redirection table size. If TC for FCoE is
4295 * less than or equal to TC3, we have enough queues
4296 * to add max of 8 queues for FCoE, so we start FCoE
4297 * tx descriptor from the next one, i.e., reg_idx + 1.
4298 * If TC for FCoE is above TC3, implying 8 TC mode,
4299 * and we need 8 for FCoE, we have to take all queues
4300 * in that traffic class for FCoE.
4302 if ((f->indices == IXGBE_FCRETA_SIZE) && (fcoe->tc > 3))
4305 #endif /* CONFIG_IXGBE_DCB */
4306 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
4307 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4308 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
4309 ixgbe_cache_ring_fdir(adapter);
4311 ixgbe_cache_ring_rss(adapter);
4313 fcoe_rx_i = f->mask;
4314 fcoe_tx_i = f->mask;
4316 for (i = 0; i < f->indices; i++, fcoe_rx_i++, fcoe_tx_i++) {
4317 adapter->rx_ring[f->mask + i]->reg_idx = fcoe_rx_i;
4318 adapter->tx_ring[f->mask + i]->reg_idx = fcoe_tx_i;
4325 #endif /* IXGBE_FCOE */
4327 * ixgbe_cache_ring_sriov - Descriptor ring to register mapping for sriov
4328 * @adapter: board private structure to initialize
4330 * SR-IOV doesn't use any descriptor rings but changes the default if
4331 * no other mapping is used.
4334 static inline bool ixgbe_cache_ring_sriov(struct ixgbe_adapter *adapter)
4336 adapter->rx_ring[0]->reg_idx = adapter->num_vfs * 2;
4337 adapter->tx_ring[0]->reg_idx = adapter->num_vfs * 2;
4338 if (adapter->num_vfs)
4345 * ixgbe_cache_ring_register - Descriptor ring to register mapping
4346 * @adapter: board private structure to initialize
4348 * Once we know the feature-set enabled for the device, we'll cache
4349 * the register offset the descriptor ring is assigned to.
4351 * Note, the order the various feature calls is important. It must start with
4352 * the "most" features enabled at the same time, then trickle down to the
4353 * least amount of features turned on at once.
4355 static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter)
4357 /* start with default case */
4358 adapter->rx_ring[0]->reg_idx = 0;
4359 adapter->tx_ring[0]->reg_idx = 0;
4361 if (ixgbe_cache_ring_sriov(adapter))
4365 if (ixgbe_cache_ring_fcoe(adapter))
4368 #endif /* IXGBE_FCOE */
4369 #ifdef CONFIG_IXGBE_DCB
4370 if (ixgbe_cache_ring_dcb(adapter))
4374 if (ixgbe_cache_ring_fdir(adapter))
4377 if (ixgbe_cache_ring_rss(adapter))
4382 * ixgbe_alloc_queues - Allocate memory for all rings
4383 * @adapter: board private structure to initialize
4385 * We allocate one ring per queue at run-time since we don't know the
4386 * number of queues at compile-time. The polling_netdev array is
4387 * intended for Multiqueue, but should work fine with a single queue.
4389 static int ixgbe_alloc_queues(struct ixgbe_adapter *adapter)
4392 int orig_node = adapter->node;
4394 for (i = 0; i < adapter->num_tx_queues; i++) {
4395 struct ixgbe_ring *ring = adapter->tx_ring[i];
4396 if (orig_node == -1) {
4397 int cur_node = next_online_node(adapter->node);
4398 if (cur_node == MAX_NUMNODES)
4399 cur_node = first_online_node;
4400 adapter->node = cur_node;
4402 ring = kzalloc_node(sizeof(struct ixgbe_ring), GFP_KERNEL,
4405 ring = kzalloc(sizeof(struct ixgbe_ring), GFP_KERNEL);
4407 goto err_tx_ring_allocation;
4408 ring->count = adapter->tx_ring_count;
4409 ring->queue_index = i;
4410 ring->numa_node = adapter->node;
4412 adapter->tx_ring[i] = ring;
4415 /* Restore the adapter's original node */
4416 adapter->node = orig_node;
4418 for (i = 0; i < adapter->num_rx_queues; i++) {
4419 struct ixgbe_ring *ring = adapter->rx_ring[i];
4420 if (orig_node == -1) {
4421 int cur_node = next_online_node(adapter->node);
4422 if (cur_node == MAX_NUMNODES)
4423 cur_node = first_online_node;
4424 adapter->node = cur_node;
4426 ring = kzalloc_node(sizeof(struct ixgbe_ring), GFP_KERNEL,
4429 ring = kzalloc(sizeof(struct ixgbe_ring), GFP_KERNEL);
4431 goto err_rx_ring_allocation;
4432 ring->count = adapter->rx_ring_count;
4433 ring->queue_index = i;
4434 ring->numa_node = adapter->node;
4436 adapter->rx_ring[i] = ring;
4439 /* Restore the adapter's original node */
4440 adapter->node = orig_node;
4442 ixgbe_cache_ring_register(adapter);
4446 err_rx_ring_allocation:
4447 for (i = 0; i < adapter->num_tx_queues; i++)
4448 kfree(adapter->tx_ring[i]);
4449 err_tx_ring_allocation:
4454 * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported
4455 * @adapter: board private structure to initialize
4457 * Attempt to configure the interrupts using the best available
4458 * capabilities of the hardware and the kernel.
4460 static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter)
4462 struct ixgbe_hw *hw = &adapter->hw;
4464 int vector, v_budget;
4467 * It's easy to be greedy for MSI-X vectors, but it really
4468 * doesn't do us much good if we have a lot more vectors
4469 * than CPU's. So let's be conservative and only ask for
4470 * (roughly) the same number of vectors as there are CPU's.
4472 v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
4473 (int)num_online_cpus()) + NON_Q_VECTORS;
4476 * At the same time, hardware can only support a maximum of
4477 * hw.mac->max_msix_vectors vectors. With features
4478 * such as RSS and VMDq, we can easily surpass the number of Rx and Tx
4479 * descriptor queues supported by our device. Thus, we cap it off in
4480 * those rare cases where the cpu count also exceeds our vector limit.
4482 v_budget = min(v_budget, (int)hw->mac.max_msix_vectors);
4484 /* A failure in MSI-X entry allocation isn't fatal, but it does
4485 * mean we disable MSI-X capabilities of the adapter. */
4486 adapter->msix_entries = kcalloc(v_budget,
4487 sizeof(struct msix_entry), GFP_KERNEL);
4488 if (adapter->msix_entries) {
4489 for (vector = 0; vector < v_budget; vector++)
4490 adapter->msix_entries[vector].entry = vector;
4492 ixgbe_acquire_msix_vectors(adapter, v_budget);
4494 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
4498 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
4499 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
4500 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
4501 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4502 adapter->atr_sample_rate = 0;
4503 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
4504 ixgbe_disable_sriov(adapter);
4506 ixgbe_set_num_queues(adapter);
4508 err = pci_enable_msi(adapter->pdev);
4510 adapter->flags |= IXGBE_FLAG_MSI_ENABLED;
4512 netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev,
4513 "Unable to allocate MSI interrupt, "
4514 "falling back to legacy. Error: %d\n", err);
4524 * ixgbe_alloc_q_vectors - Allocate memory for interrupt vectors
4525 * @adapter: board private structure to initialize
4527 * We allocate one q_vector per queue interrupt. If allocation fails we
4530 static int ixgbe_alloc_q_vectors(struct ixgbe_adapter *adapter)
4532 int q_idx, num_q_vectors;
4533 struct ixgbe_q_vector *q_vector;
4535 int (*poll)(struct napi_struct *, int);
4537 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
4538 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
4539 napi_vectors = adapter->num_rx_queues;
4540 poll = &ixgbe_clean_rxtx_many;
4547 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
4548 q_vector = kzalloc_node(sizeof(struct ixgbe_q_vector),
4549 GFP_KERNEL, adapter->node);
4551 q_vector = kzalloc(sizeof(struct ixgbe_q_vector),
4555 q_vector->adapter = adapter;
4556 if (q_vector->txr_count && !q_vector->rxr_count)
4557 q_vector->eitr = adapter->tx_eitr_param;
4559 q_vector->eitr = adapter->rx_eitr_param;
4560 q_vector->v_idx = q_idx;
4561 netif_napi_add(adapter->netdev, &q_vector->napi, (*poll), 64);
4562 adapter->q_vector[q_idx] = q_vector;
4570 q_vector = adapter->q_vector[q_idx];
4571 netif_napi_del(&q_vector->napi);
4573 adapter->q_vector[q_idx] = NULL;
4579 * ixgbe_free_q_vectors - Free memory allocated for interrupt vectors
4580 * @adapter: board private structure to initialize
4582 * This function frees the memory allocated to the q_vectors. In addition if
4583 * NAPI is enabled it will delete any references to the NAPI struct prior
4584 * to freeing the q_vector.
4586 static void ixgbe_free_q_vectors(struct ixgbe_adapter *adapter)
4588 int q_idx, num_q_vectors;
4590 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
4591 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
4595 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
4596 struct ixgbe_q_vector *q_vector = adapter->q_vector[q_idx];
4597 adapter->q_vector[q_idx] = NULL;
4598 netif_napi_del(&q_vector->napi);
4603 static void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter)
4605 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
4606 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
4607 pci_disable_msix(adapter->pdev);
4608 kfree(adapter->msix_entries);
4609 adapter->msix_entries = NULL;
4610 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
4611 adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED;
4612 pci_disable_msi(adapter->pdev);
4617 * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme
4618 * @adapter: board private structure to initialize
4620 * We determine which interrupt scheme to use based on...
4621 * - Kernel support (MSI, MSI-X)
4622 * - which can be user-defined (via MODULE_PARAM)
4623 * - Hardware queue count (num_*_queues)
4624 * - defined by miscellaneous hardware support/features (RSS, etc.)
4626 int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter)
4630 /* Number of supported queues */
4631 ixgbe_set_num_queues(adapter);
4633 err = ixgbe_set_interrupt_capability(adapter);
4635 e_dev_err("Unable to setup interrupt capabilities\n");
4636 goto err_set_interrupt;
4639 err = ixgbe_alloc_q_vectors(adapter);
4641 e_dev_err("Unable to allocate memory for queue vectors\n");
4642 goto err_alloc_q_vectors;
4645 err = ixgbe_alloc_queues(adapter);
4647 e_dev_err("Unable to allocate memory for queues\n");
4648 goto err_alloc_queues;
4651 e_dev_info("Multiqueue %s: Rx Queue count = %u, Tx Queue count = %u\n",
4652 (adapter->num_rx_queues > 1) ? "Enabled" : "Disabled",
4653 adapter->num_rx_queues, adapter->num_tx_queues);
4655 set_bit(__IXGBE_DOWN, &adapter->state);
4660 ixgbe_free_q_vectors(adapter);
4661 err_alloc_q_vectors:
4662 ixgbe_reset_interrupt_capability(adapter);
4668 * ixgbe_clear_interrupt_scheme - Clear the current interrupt scheme settings
4669 * @adapter: board private structure to clear interrupt scheme on
4671 * We go through and clear interrupt specific resources and reset the structure
4672 * to pre-load conditions
4674 void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter *adapter)
4678 for (i = 0; i < adapter->num_tx_queues; i++) {
4679 kfree(adapter->tx_ring[i]);
4680 adapter->tx_ring[i] = NULL;
4682 for (i = 0; i < adapter->num_rx_queues; i++) {
4683 kfree(adapter->rx_ring[i]);
4684 adapter->rx_ring[i] = NULL;
4687 ixgbe_free_q_vectors(adapter);
4688 ixgbe_reset_interrupt_capability(adapter);
4692 * ixgbe_sfp_timer - worker thread to find a missing module
4693 * @data: pointer to our adapter struct
4695 static void ixgbe_sfp_timer(unsigned long data)
4697 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
4700 * Do the sfp_timer outside of interrupt context due to the
4701 * delays that sfp+ detection requires
4703 schedule_work(&adapter->sfp_task);
4707 * ixgbe_sfp_task - worker thread to find a missing module
4708 * @work: pointer to work_struct containing our data
4710 static void ixgbe_sfp_task(struct work_struct *work)
4712 struct ixgbe_adapter *adapter = container_of(work,
4713 struct ixgbe_adapter,
4715 struct ixgbe_hw *hw = &adapter->hw;
4717 if ((hw->phy.type == ixgbe_phy_nl) &&
4718 (hw->phy.sfp_type == ixgbe_sfp_type_not_present)) {
4719 s32 ret = hw->phy.ops.identify_sfp(hw);
4720 if (ret == IXGBE_ERR_SFP_NOT_PRESENT)
4722 ret = hw->phy.ops.reset(hw);
4723 if (ret == IXGBE_ERR_SFP_NOT_SUPPORTED) {
4724 e_dev_err("failed to initialize because an unsupported "
4725 "SFP+ module type was detected.\n");
4726 e_dev_err("Reload the driver after installing a "
4727 "supported module.\n");
4728 unregister_netdev(adapter->netdev);
4730 e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type);
4732 /* don't need this routine any more */
4733 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
4737 if (test_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state))
4738 mod_timer(&adapter->sfp_timer,
4739 round_jiffies(jiffies + (2 * HZ)));
4743 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
4744 * @adapter: board private structure to initialize
4746 * ixgbe_sw_init initializes the Adapter private data structure.
4747 * Fields are initialized based on PCI device information and
4748 * OS network device settings (MTU size).
4750 static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
4752 struct ixgbe_hw *hw = &adapter->hw;
4753 struct pci_dev *pdev = adapter->pdev;
4754 struct net_device *dev = adapter->netdev;
4756 #ifdef CONFIG_IXGBE_DCB
4758 struct tc_configuration *tc;
4761 /* PCI config space info */
4763 hw->vendor_id = pdev->vendor;
4764 hw->device_id = pdev->device;
4765 hw->revision_id = pdev->revision;
4766 hw->subsystem_vendor_id = pdev->subsystem_vendor;
4767 hw->subsystem_device_id = pdev->subsystem_device;
4769 /* Set capability flags */
4770 rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus());
4771 adapter->ring_feature[RING_F_RSS].indices = rss;
4772 adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
4773 adapter->ring_feature[RING_F_DCB].indices = IXGBE_MAX_DCB_INDICES;
4774 if (hw->mac.type == ixgbe_mac_82598EB) {
4775 if (hw->device_id == IXGBE_DEV_ID_82598AT)
4776 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE;
4777 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82598;
4778 } else if (hw->mac.type == ixgbe_mac_82599EB) {
4779 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599;
4780 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
4781 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
4782 if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM)
4783 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
4784 if (dev->features & NETIF_F_NTUPLE) {
4785 /* Flow Director perfect filter enabled */
4786 adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4787 adapter->atr_sample_rate = 0;
4788 spin_lock_init(&adapter->fdir_perfect_lock);
4790 /* Flow Director hash filters enabled */
4791 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
4792 adapter->atr_sample_rate = 20;
4794 adapter->ring_feature[RING_F_FDIR].indices =
4795 IXGBE_MAX_FDIR_INDICES;
4796 adapter->fdir_pballoc = 0;
4798 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
4799 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
4800 adapter->ring_feature[RING_F_FCOE].indices = 0;
4801 #ifdef CONFIG_IXGBE_DCB
4802 /* Default traffic class to use for FCoE */
4803 adapter->fcoe.tc = IXGBE_FCOE_DEFTC;
4804 adapter->fcoe.up = IXGBE_FCOE_DEFTC;
4806 #endif /* IXGBE_FCOE */
4809 #ifdef CONFIG_IXGBE_DCB
4810 /* Configure DCB traffic classes */
4811 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
4812 tc = &adapter->dcb_cfg.tc_config[j];
4813 tc->path[DCB_TX_CONFIG].bwg_id = 0;
4814 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1);
4815 tc->path[DCB_RX_CONFIG].bwg_id = 0;
4816 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1);
4817 tc->dcb_pfc = pfc_disabled;
4819 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100;
4820 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100;
4821 adapter->dcb_cfg.rx_pba_cfg = pba_equal;
4822 adapter->dcb_cfg.pfc_mode_enable = false;
4823 adapter->dcb_cfg.round_robin_enable = false;
4824 adapter->dcb_set_bitmap = 0x00;
4825 ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg,
4826 adapter->ring_feature[RING_F_DCB].indices);
4830 /* default flow control settings */
4831 hw->fc.requested_mode = ixgbe_fc_full;
4832 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */
4834 adapter->last_lfc_mode = hw->fc.current_mode;
4836 hw->fc.high_water = IXGBE_DEFAULT_FCRTH;
4837 hw->fc.low_water = IXGBE_DEFAULT_FCRTL;
4838 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
4839 hw->fc.send_xon = true;
4840 hw->fc.disable_fc_autoneg = false;
4842 /* enable itr by default in dynamic mode */
4843 adapter->rx_itr_setting = 1;
4844 adapter->rx_eitr_param = 20000;
4845 adapter->tx_itr_setting = 1;
4846 adapter->tx_eitr_param = 10000;
4848 /* set defaults for eitr in MegaBytes */
4849 adapter->eitr_low = 10;
4850 adapter->eitr_high = 20;
4852 /* set default ring sizes */
4853 adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
4854 adapter->rx_ring_count = IXGBE_DEFAULT_RXD;
4856 /* initialize eeprom parameters */
4857 if (ixgbe_init_eeprom_params_generic(hw)) {
4858 e_dev_err("EEPROM initialization failed\n");
4862 /* enable rx csum by default */
4863 adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
4865 /* get assigned NUMA node */
4866 adapter->node = dev_to_node(&pdev->dev);
4868 set_bit(__IXGBE_DOWN, &adapter->state);
4874 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
4875 * @adapter: board private structure
4876 * @tx_ring: tx descriptor ring (for a specific queue) to setup
4878 * Return 0 on success, negative on failure
4880 int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter,
4881 struct ixgbe_ring *tx_ring)
4883 struct pci_dev *pdev = adapter->pdev;
4886 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
4887 tx_ring->tx_buffer_info = vmalloc_node(size, tx_ring->numa_node);
4888 if (!tx_ring->tx_buffer_info)
4889 tx_ring->tx_buffer_info = vmalloc(size);
4890 if (!tx_ring->tx_buffer_info)
4892 memset(tx_ring->tx_buffer_info, 0, size);
4894 /* round up to nearest 4K */
4895 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
4896 tx_ring->size = ALIGN(tx_ring->size, 4096);
4898 tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
4899 &tx_ring->dma, GFP_KERNEL);
4903 tx_ring->next_to_use = 0;
4904 tx_ring->next_to_clean = 0;
4905 tx_ring->work_limit = tx_ring->count;
4909 vfree(tx_ring->tx_buffer_info);
4910 tx_ring->tx_buffer_info = NULL;
4911 e_err(probe, "Unable to allocate memory for the Tx descriptor ring\n");
4916 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
4917 * @adapter: board private structure
4919 * If this function returns with an error, then it's possible one or
4920 * more of the rings is populated (while the rest are not). It is the
4921 * callers duty to clean those orphaned rings.
4923 * Return 0 on success, negative on failure
4925 static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
4929 for (i = 0; i < adapter->num_tx_queues; i++) {
4930 err = ixgbe_setup_tx_resources(adapter, adapter->tx_ring[i]);
4933 e_err(probe, "Allocation for Tx Queue %u failed\n", i);
4941 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
4942 * @adapter: board private structure
4943 * @rx_ring: rx descriptor ring (for a specific queue) to setup
4945 * Returns 0 on success, negative on failure
4947 int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter,
4948 struct ixgbe_ring *rx_ring)
4950 struct pci_dev *pdev = adapter->pdev;
4953 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
4954 rx_ring->rx_buffer_info = vmalloc_node(size, adapter->node);
4955 if (!rx_ring->rx_buffer_info)
4956 rx_ring->rx_buffer_info = vmalloc(size);
4957 if (!rx_ring->rx_buffer_info) {
4958 e_err(probe, "vmalloc allocation failed for the Rx "
4959 "descriptor ring\n");
4962 memset(rx_ring->rx_buffer_info, 0, size);
4964 /* Round up to nearest 4K */
4965 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
4966 rx_ring->size = ALIGN(rx_ring->size, 4096);
4968 rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
4969 &rx_ring->dma, GFP_KERNEL);
4971 if (!rx_ring->desc) {
4972 e_err(probe, "Memory allocation failed for the Rx "
4973 "descriptor ring\n");
4974 vfree(rx_ring->rx_buffer_info);
4978 rx_ring->next_to_clean = 0;
4979 rx_ring->next_to_use = 0;
4988 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
4989 * @adapter: board private structure
4991 * If this function returns with an error, then it's possible one or
4992 * more of the rings is populated (while the rest are not). It is the
4993 * callers duty to clean those orphaned rings.
4995 * Return 0 on success, negative on failure
4998 static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
5002 for (i = 0; i < adapter->num_rx_queues; i++) {
5003 err = ixgbe_setup_rx_resources(adapter, adapter->rx_ring[i]);
5006 e_err(probe, "Allocation for Rx Queue %u failed\n", i);
5014 * ixgbe_free_tx_resources - Free Tx Resources per Queue
5015 * @adapter: board private structure
5016 * @tx_ring: Tx descriptor ring for a specific queue
5018 * Free all transmit software resources
5020 void ixgbe_free_tx_resources(struct ixgbe_adapter *adapter,
5021 struct ixgbe_ring *tx_ring)
5023 struct pci_dev *pdev = adapter->pdev;
5025 ixgbe_clean_tx_ring(adapter, tx_ring);
5027 vfree(tx_ring->tx_buffer_info);
5028 tx_ring->tx_buffer_info = NULL;
5030 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
5033 tx_ring->desc = NULL;
5037 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
5038 * @adapter: board private structure
5040 * Free all transmit software resources
5042 static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter)
5046 for (i = 0; i < adapter->num_tx_queues; i++)
5047 if (adapter->tx_ring[i]->desc)
5048 ixgbe_free_tx_resources(adapter, adapter->tx_ring[i]);
5052 * ixgbe_free_rx_resources - Free Rx Resources
5053 * @adapter: board private structure
5054 * @rx_ring: ring to clean the resources from
5056 * Free all receive software resources
5058 void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter,
5059 struct ixgbe_ring *rx_ring)
5061 struct pci_dev *pdev = adapter->pdev;
5063 ixgbe_clean_rx_ring(adapter, rx_ring);
5065 vfree(rx_ring->rx_buffer_info);
5066 rx_ring->rx_buffer_info = NULL;
5068 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
5071 rx_ring->desc = NULL;
5075 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
5076 * @adapter: board private structure
5078 * Free all receive software resources
5080 static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter)
5084 for (i = 0; i < adapter->num_rx_queues; i++)
5085 if (adapter->rx_ring[i]->desc)
5086 ixgbe_free_rx_resources(adapter, adapter->rx_ring[i]);
5090 * ixgbe_change_mtu - Change the Maximum Transfer Unit
5091 * @netdev: network interface device structure
5092 * @new_mtu: new value for maximum frame size
5094 * Returns 0 on success, negative on failure
5096 static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
5098 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5099 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
5101 /* MTU < 68 is an error and causes problems on some kernels */
5102 if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
5105 e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu);
5106 /* must set new MTU before calling down or up */
5107 netdev->mtu = new_mtu;
5109 if (netif_running(netdev))
5110 ixgbe_reinit_locked(adapter);
5116 * ixgbe_open - Called when a network interface is made active
5117 * @netdev: network interface device structure
5119 * Returns 0 on success, negative value on failure
5121 * The open entry point is called when a network interface is made
5122 * active by the system (IFF_UP). At this point all resources needed
5123 * for transmit and receive operations are allocated, the interrupt
5124 * handler is registered with the OS, the watchdog timer is started,
5125 * and the stack is notified that the interface is ready.
5127 static int ixgbe_open(struct net_device *netdev)
5129 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5132 /* disallow open during test */
5133 if (test_bit(__IXGBE_TESTING, &adapter->state))
5136 netif_carrier_off(netdev);
5138 /* allocate transmit descriptors */
5139 err = ixgbe_setup_all_tx_resources(adapter);
5143 /* allocate receive descriptors */
5144 err = ixgbe_setup_all_rx_resources(adapter);
5148 ixgbe_configure(adapter);
5150 err = ixgbe_request_irq(adapter);
5154 err = ixgbe_up_complete(adapter);
5158 netif_tx_start_all_queues(netdev);
5163 ixgbe_release_hw_control(adapter);
5164 ixgbe_free_irq(adapter);
5167 ixgbe_free_all_rx_resources(adapter);
5169 ixgbe_free_all_tx_resources(adapter);
5170 ixgbe_reset(adapter);
5176 * ixgbe_close - Disables a network interface
5177 * @netdev: network interface device structure
5179 * Returns 0, this is not allowed to fail
5181 * The close entry point is called when an interface is de-activated
5182 * by the OS. The hardware is still under the drivers control, but
5183 * needs to be disabled. A global MAC reset is issued to stop the
5184 * hardware, and all transmit and receive resources are freed.
5186 static int ixgbe_close(struct net_device *netdev)
5188 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5190 ixgbe_down(adapter);
5191 ixgbe_free_irq(adapter);
5193 ixgbe_free_all_tx_resources(adapter);
5194 ixgbe_free_all_rx_resources(adapter);
5196 ixgbe_release_hw_control(adapter);
5202 static int ixgbe_resume(struct pci_dev *pdev)
5204 struct net_device *netdev = pci_get_drvdata(pdev);
5205 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5208 pci_set_power_state(pdev, PCI_D0);
5209 pci_restore_state(pdev);
5211 * pci_restore_state clears dev->state_saved so call
5212 * pci_save_state to restore it.
5214 pci_save_state(pdev);
5216 err = pci_enable_device_mem(pdev);
5218 e_dev_err("Cannot enable PCI device from suspend\n");
5221 pci_set_master(pdev);
5223 pci_wake_from_d3(pdev, false);
5225 err = ixgbe_init_interrupt_scheme(adapter);
5227 e_dev_err("Cannot initialize interrupts for device\n");
5231 ixgbe_reset(adapter);
5233 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
5235 if (netif_running(netdev)) {
5236 err = ixgbe_open(adapter->netdev);
5241 netif_device_attach(netdev);
5245 #endif /* CONFIG_PM */
5247 static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
5249 struct net_device *netdev = pci_get_drvdata(pdev);
5250 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5251 struct ixgbe_hw *hw = &adapter->hw;
5253 u32 wufc = adapter->wol;
5258 netif_device_detach(netdev);
5260 if (netif_running(netdev)) {
5261 ixgbe_down(adapter);
5262 ixgbe_free_irq(adapter);
5263 ixgbe_free_all_tx_resources(adapter);
5264 ixgbe_free_all_rx_resources(adapter);
5268 retval = pci_save_state(pdev);
5274 ixgbe_set_rx_mode(netdev);
5276 /* turn on all-multi mode if wake on multicast is enabled */
5277 if (wufc & IXGBE_WUFC_MC) {
5278 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
5279 fctrl |= IXGBE_FCTRL_MPE;
5280 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
5283 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
5284 ctrl |= IXGBE_CTRL_GIO_DIS;
5285 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
5287 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc);
5289 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0);
5290 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0);
5293 if (wufc && hw->mac.type == ixgbe_mac_82599EB)
5294 pci_wake_from_d3(pdev, true);
5296 pci_wake_from_d3(pdev, false);
5298 *enable_wake = !!wufc;
5300 ixgbe_clear_interrupt_scheme(adapter);
5302 ixgbe_release_hw_control(adapter);
5304 pci_disable_device(pdev);
5310 static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
5315 retval = __ixgbe_shutdown(pdev, &wake);
5320 pci_prepare_to_sleep(pdev);
5322 pci_wake_from_d3(pdev, false);
5323 pci_set_power_state(pdev, PCI_D3hot);
5328 #endif /* CONFIG_PM */
5330 static void ixgbe_shutdown(struct pci_dev *pdev)
5334 __ixgbe_shutdown(pdev, &wake);
5336 if (system_state == SYSTEM_POWER_OFF) {
5337 pci_wake_from_d3(pdev, wake);
5338 pci_set_power_state(pdev, PCI_D3hot);
5343 * ixgbe_update_stats - Update the board statistics counters.
5344 * @adapter: board private structure
5346 void ixgbe_update_stats(struct ixgbe_adapter *adapter)
5348 struct net_device *netdev = adapter->netdev;
5349 struct ixgbe_hw *hw = &adapter->hw;
5351 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
5352 u64 non_eop_descs = 0, restart_queue = 0;
5354 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
5355 test_bit(__IXGBE_RESETTING, &adapter->state))
5358 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
5361 for (i = 0; i < 16; i++)
5362 adapter->hw_rx_no_dma_resources +=
5363 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
5364 for (i = 0; i < adapter->num_rx_queues; i++) {
5365 rsc_count += adapter->rx_ring[i]->rsc_count;
5366 rsc_flush += adapter->rx_ring[i]->rsc_flush;
5368 adapter->rsc_total_count = rsc_count;
5369 adapter->rsc_total_flush = rsc_flush;
5372 /* gather some stats to the adapter struct that are per queue */
5373 for (i = 0; i < adapter->num_tx_queues; i++)
5374 restart_queue += adapter->tx_ring[i]->restart_queue;
5375 adapter->restart_queue = restart_queue;
5377 for (i = 0; i < adapter->num_rx_queues; i++)
5378 non_eop_descs += adapter->rx_ring[i]->non_eop_descs;
5379 adapter->non_eop_descs = non_eop_descs;
5381 adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
5382 for (i = 0; i < 8; i++) {
5383 /* for packet buffers not used, the register should read 0 */
5384 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
5386 adapter->stats.mpc[i] += mpc;
5387 total_mpc += adapter->stats.mpc[i];
5388 if (hw->mac.type == ixgbe_mac_82598EB)
5389 adapter->stats.rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
5390 adapter->stats.qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i));
5391 adapter->stats.qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i));
5392 adapter->stats.qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i));
5393 adapter->stats.qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i));
5394 if (hw->mac.type == ixgbe_mac_82599EB) {
5395 adapter->stats.pxonrxc[i] += IXGBE_READ_REG(hw,
5396 IXGBE_PXONRXCNT(i));
5397 adapter->stats.pxoffrxc[i] += IXGBE_READ_REG(hw,
5398 IXGBE_PXOFFRXCNT(i));
5399 adapter->stats.qprdc[i] += IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
5401 adapter->stats.pxonrxc[i] += IXGBE_READ_REG(hw,
5403 adapter->stats.pxoffrxc[i] += IXGBE_READ_REG(hw,
5406 adapter->stats.pxontxc[i] += IXGBE_READ_REG(hw,
5408 adapter->stats.pxofftxc[i] += IXGBE_READ_REG(hw,
5411 adapter->stats.gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
5412 /* work around hardware counting issue */
5413 adapter->stats.gprc -= missed_rx;
5415 /* 82598 hardware only has a 32 bit counter in the high register */
5416 if (hw->mac.type == ixgbe_mac_82599EB) {
5418 adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCL);
5419 tmp = IXGBE_READ_REG(hw, IXGBE_GORCH) & 0xF; /* 4 high bits of GORC */
5420 adapter->stats.gorc += (tmp << 32);
5421 adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL);
5422 tmp = IXGBE_READ_REG(hw, IXGBE_GOTCH) & 0xF; /* 4 high bits of GOTC */
5423 adapter->stats.gotc += (tmp << 32);
5424 adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORL);
5425 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */
5426 adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
5427 adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
5428 adapter->stats.fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
5429 adapter->stats.fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
5431 adapter->stats.fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC);
5432 adapter->stats.fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC);
5433 adapter->stats.fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC);
5434 adapter->stats.fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC);
5435 adapter->stats.fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC);
5436 adapter->stats.fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC);
5437 #endif /* IXGBE_FCOE */
5439 adapter->stats.lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
5440 adapter->stats.lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
5441 adapter->stats.gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
5442 adapter->stats.gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
5443 adapter->stats.tor += IXGBE_READ_REG(hw, IXGBE_TORH);
5445 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
5446 adapter->stats.bprc += bprc;
5447 adapter->stats.mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
5448 if (hw->mac.type == ixgbe_mac_82598EB)
5449 adapter->stats.mprc -= bprc;
5450 adapter->stats.roc += IXGBE_READ_REG(hw, IXGBE_ROC);
5451 adapter->stats.prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64);
5452 adapter->stats.prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127);
5453 adapter->stats.prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255);
5454 adapter->stats.prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
5455 adapter->stats.prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
5456 adapter->stats.prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
5457 adapter->stats.rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
5458 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
5459 adapter->stats.lxontxc += lxon;
5460 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
5461 adapter->stats.lxofftxc += lxoff;
5462 adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
5463 adapter->stats.gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
5464 adapter->stats.mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
5466 * 82598 errata - tx of flow control packets is included in tx counters
5468 xon_off_tot = lxon + lxoff;
5469 adapter->stats.gptc -= xon_off_tot;
5470 adapter->stats.mptc -= xon_off_tot;
5471 adapter->stats.gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
5472 adapter->stats.ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
5473 adapter->stats.rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
5474 adapter->stats.rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
5475 adapter->stats.tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
5476 adapter->stats.ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
5477 adapter->stats.ptc64 -= xon_off_tot;
5478 adapter->stats.ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
5479 adapter->stats.ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
5480 adapter->stats.ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
5481 adapter->stats.ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
5482 adapter->stats.ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
5483 adapter->stats.bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
5485 /* Fill out the OS statistics structure */
5486 netdev->stats.multicast = adapter->stats.mprc;
5489 netdev->stats.rx_errors = adapter->stats.crcerrs +
5490 adapter->stats.rlec;
5491 netdev->stats.rx_dropped = 0;
5492 netdev->stats.rx_length_errors = adapter->stats.rlec;
5493 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
5494 netdev->stats.rx_missed_errors = total_mpc;
5498 * ixgbe_watchdog - Timer Call-back
5499 * @data: pointer to adapter cast into an unsigned long
5501 static void ixgbe_watchdog(unsigned long data)
5503 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
5504 struct ixgbe_hw *hw = &adapter->hw;
5509 * Do the watchdog outside of interrupt context due to the lovely
5510 * delays that some of the newer hardware requires
5513 if (test_bit(__IXGBE_DOWN, &adapter->state))
5514 goto watchdog_short_circuit;
5516 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
5518 * for legacy and MSI interrupts don't set any bits
5519 * that are enabled for EIAM, because this operation
5520 * would set *both* EIMS and EICS for any bit in EIAM
5522 IXGBE_WRITE_REG(hw, IXGBE_EICS,
5523 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER));
5524 goto watchdog_reschedule;
5527 /* get one bit for every active tx/rx interrupt vector */
5528 for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) {
5529 struct ixgbe_q_vector *qv = adapter->q_vector[i];
5530 if (qv->rxr_count || qv->txr_count)
5531 eics |= ((u64)1 << i);
5534 /* Cause software interrupt to ensure rx rings are cleaned */
5535 ixgbe_irq_rearm_queues(adapter, eics);
5537 watchdog_reschedule:
5538 /* Reset the timer */
5539 mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ));
5541 watchdog_short_circuit:
5542 schedule_work(&adapter->watchdog_task);
5546 * ixgbe_multispeed_fiber_task - worker thread to configure multispeed fiber
5547 * @work: pointer to work_struct containing our data
5549 static void ixgbe_multispeed_fiber_task(struct work_struct *work)
5551 struct ixgbe_adapter *adapter = container_of(work,
5552 struct ixgbe_adapter,
5553 multispeed_fiber_task);
5554 struct ixgbe_hw *hw = &adapter->hw;
5558 adapter->flags |= IXGBE_FLAG_IN_SFP_LINK_TASK;
5559 autoneg = hw->phy.autoneg_advertised;
5560 if ((!autoneg) && (hw->mac.ops.get_link_capabilities))
5561 hw->mac.ops.get_link_capabilities(hw, &autoneg, &negotiation);
5562 hw->mac.autotry_restart = false;
5563 if (hw->mac.ops.setup_link)
5564 hw->mac.ops.setup_link(hw, autoneg, negotiation, true);
5565 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
5566 adapter->flags &= ~IXGBE_FLAG_IN_SFP_LINK_TASK;
5570 * ixgbe_sfp_config_module_task - worker thread to configure a new SFP+ module
5571 * @work: pointer to work_struct containing our data
5573 static void ixgbe_sfp_config_module_task(struct work_struct *work)
5575 struct ixgbe_adapter *adapter = container_of(work,
5576 struct ixgbe_adapter,
5577 sfp_config_module_task);
5578 struct ixgbe_hw *hw = &adapter->hw;
5581 adapter->flags |= IXGBE_FLAG_IN_SFP_MOD_TASK;
5583 /* Time for electrical oscillations to settle down */
5585 err = hw->phy.ops.identify_sfp(hw);
5587 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
5588 e_dev_err("failed to initialize because an unsupported SFP+ "
5589 "module type was detected.\n");
5590 e_dev_err("Reload the driver after installing a supported "
5592 unregister_netdev(adapter->netdev);
5595 hw->mac.ops.setup_sfp(hw);
5597 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK))
5598 /* This will also work for DA Twinax connections */
5599 schedule_work(&adapter->multispeed_fiber_task);
5600 adapter->flags &= ~IXGBE_FLAG_IN_SFP_MOD_TASK;
5604 * ixgbe_fdir_reinit_task - worker thread to reinit FDIR filter table
5605 * @work: pointer to work_struct containing our data
5607 static void ixgbe_fdir_reinit_task(struct work_struct *work)
5609 struct ixgbe_adapter *adapter = container_of(work,
5610 struct ixgbe_adapter,
5612 struct ixgbe_hw *hw = &adapter->hw;
5615 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
5616 for (i = 0; i < adapter->num_tx_queues; i++)
5617 set_bit(__IXGBE_FDIR_INIT_DONE,
5618 &(adapter->tx_ring[i]->reinit_state));
5620 e_err(probe, "failed to finish FDIR re-initialization, "
5621 "ignored adding FDIR ATR filters\n");
5623 /* Done FDIR Re-initialization, enable transmits */
5624 netif_tx_start_all_queues(adapter->netdev);
5627 static DEFINE_MUTEX(ixgbe_watchdog_lock);
5630 * ixgbe_watchdog_task - worker thread to bring link up
5631 * @work: pointer to work_struct containing our data
5633 static void ixgbe_watchdog_task(struct work_struct *work)
5635 struct ixgbe_adapter *adapter = container_of(work,
5636 struct ixgbe_adapter,
5638 struct net_device *netdev = adapter->netdev;
5639 struct ixgbe_hw *hw = &adapter->hw;
5643 struct ixgbe_ring *tx_ring;
5644 int some_tx_pending = 0;
5646 mutex_lock(&ixgbe_watchdog_lock);
5648 link_up = adapter->link_up;
5649 link_speed = adapter->link_speed;
5651 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) {
5652 hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
5655 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
5656 for (i = 0; i < MAX_TRAFFIC_CLASS; i++)
5657 hw->mac.ops.fc_enable(hw, i);
5659 hw->mac.ops.fc_enable(hw, 0);
5662 hw->mac.ops.fc_enable(hw, 0);
5667 time_after(jiffies, (adapter->link_check_timeout +
5668 IXGBE_TRY_LINK_TIMEOUT))) {
5669 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
5670 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC);
5672 adapter->link_up = link_up;
5673 adapter->link_speed = link_speed;
5677 if (!netif_carrier_ok(netdev)) {
5678 bool flow_rx, flow_tx;
5680 if (hw->mac.type == ixgbe_mac_82599EB) {
5681 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN);
5682 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
5683 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE);
5684 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X);
5686 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
5687 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS);
5688 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE);
5689 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X);
5692 e_info(drv, "NIC Link is Up %s, Flow Control: %s\n",
5693 (link_speed == IXGBE_LINK_SPEED_10GB_FULL ?
5695 (link_speed == IXGBE_LINK_SPEED_1GB_FULL ?
5696 "1 Gbps" : "unknown speed")),
5697 ((flow_rx && flow_tx) ? "RX/TX" :
5699 (flow_tx ? "TX" : "None"))));
5701 netif_carrier_on(netdev);
5703 /* Force detection of hung controller */
5704 adapter->detect_tx_hung = true;
5707 adapter->link_up = false;
5708 adapter->link_speed = 0;
5709 if (netif_carrier_ok(netdev)) {
5710 e_info(drv, "NIC Link is Down\n");
5711 netif_carrier_off(netdev);
5715 if (!netif_carrier_ok(netdev)) {
5716 for (i = 0; i < adapter->num_tx_queues; i++) {
5717 tx_ring = adapter->tx_ring[i];
5718 if (tx_ring->next_to_use != tx_ring->next_to_clean) {
5719 some_tx_pending = 1;
5724 if (some_tx_pending) {
5725 /* We've lost link, so the controller stops DMA,
5726 * but we've got queued Tx work that's never going
5727 * to get done, so reset controller to flush Tx.
5728 * (Do the reset outside of interrupt context).
5730 schedule_work(&adapter->reset_task);
5734 ixgbe_update_stats(adapter);
5735 mutex_unlock(&ixgbe_watchdog_lock);
5738 static int ixgbe_tso(struct ixgbe_adapter *adapter,
5739 struct ixgbe_ring *tx_ring, struct sk_buff *skb,
5740 u32 tx_flags, u8 *hdr_len)
5742 struct ixgbe_adv_tx_context_desc *context_desc;
5745 struct ixgbe_tx_buffer *tx_buffer_info;
5746 u32 vlan_macip_lens = 0, type_tucmd_mlhl;
5747 u32 mss_l4len_idx, l4len;
5749 if (skb_is_gso(skb)) {
5750 if (skb_header_cloned(skb)) {
5751 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
5755 l4len = tcp_hdrlen(skb);
5758 if (skb->protocol == htons(ETH_P_IP)) {
5759 struct iphdr *iph = ip_hdr(skb);
5762 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
5766 } else if (skb_is_gso_v6(skb)) {
5767 ipv6_hdr(skb)->payload_len = 0;
5768 tcp_hdr(skb)->check =
5769 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
5770 &ipv6_hdr(skb)->daddr,
5774 i = tx_ring->next_to_use;
5776 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5777 context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
5779 /* VLAN MACLEN IPLEN */
5780 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
5782 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
5783 vlan_macip_lens |= ((skb_network_offset(skb)) <<
5784 IXGBE_ADVTXD_MACLEN_SHIFT);
5785 *hdr_len += skb_network_offset(skb);
5787 (skb_transport_header(skb) - skb_network_header(skb));
5789 (skb_transport_header(skb) - skb_network_header(skb));
5790 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
5791 context_desc->seqnum_seed = 0;
5793 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
5794 type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT |
5795 IXGBE_ADVTXD_DTYP_CTXT);
5797 if (skb->protocol == htons(ETH_P_IP))
5798 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
5799 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
5800 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
5804 (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT);
5805 mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT);
5806 /* use index 1 for TSO */
5807 mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
5808 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
5810 tx_buffer_info->time_stamp = jiffies;
5811 tx_buffer_info->next_to_watch = i;
5814 if (i == tx_ring->count)
5816 tx_ring->next_to_use = i;
5823 static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter,
5824 struct ixgbe_ring *tx_ring,
5825 struct sk_buff *skb, u32 tx_flags)
5827 struct ixgbe_adv_tx_context_desc *context_desc;
5829 struct ixgbe_tx_buffer *tx_buffer_info;
5830 u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0;
5832 if (skb->ip_summed == CHECKSUM_PARTIAL ||
5833 (tx_flags & IXGBE_TX_FLAGS_VLAN)) {
5834 i = tx_ring->next_to_use;
5835 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5836 context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
5838 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
5840 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
5841 vlan_macip_lens |= (skb_network_offset(skb) <<
5842 IXGBE_ADVTXD_MACLEN_SHIFT);
5843 if (skb->ip_summed == CHECKSUM_PARTIAL)
5844 vlan_macip_lens |= (skb_transport_header(skb) -
5845 skb_network_header(skb));
5847 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
5848 context_desc->seqnum_seed = 0;
5850 type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT |
5851 IXGBE_ADVTXD_DTYP_CTXT);
5853 if (skb->ip_summed == CHECKSUM_PARTIAL) {
5856 if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) {
5857 const struct vlan_ethhdr *vhdr =
5858 (const struct vlan_ethhdr *)skb->data;
5860 protocol = vhdr->h_vlan_encapsulated_proto;
5862 protocol = skb->protocol;
5866 case cpu_to_be16(ETH_P_IP):
5867 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
5868 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
5870 IXGBE_ADVTXD_TUCMD_L4T_TCP;
5871 else if (ip_hdr(skb)->protocol == IPPROTO_SCTP)
5873 IXGBE_ADVTXD_TUCMD_L4T_SCTP;
5875 case cpu_to_be16(ETH_P_IPV6):
5876 /* XXX what about other V6 headers?? */
5877 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
5879 IXGBE_ADVTXD_TUCMD_L4T_TCP;
5880 else if (ipv6_hdr(skb)->nexthdr == IPPROTO_SCTP)
5882 IXGBE_ADVTXD_TUCMD_L4T_SCTP;
5885 if (unlikely(net_ratelimit())) {
5886 e_warn(probe, "partial checksum "
5894 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
5895 /* use index zero for tx checksum offload */
5896 context_desc->mss_l4len_idx = 0;
5898 tx_buffer_info->time_stamp = jiffies;
5899 tx_buffer_info->next_to_watch = i;
5902 if (i == tx_ring->count)
5904 tx_ring->next_to_use = i;
5912 static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
5913 struct ixgbe_ring *tx_ring,
5914 struct sk_buff *skb, u32 tx_flags,
5917 struct pci_dev *pdev = adapter->pdev;
5918 struct ixgbe_tx_buffer *tx_buffer_info;
5920 unsigned int total = skb->len;
5921 unsigned int offset = 0, size, count = 0, i;
5922 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
5925 i = tx_ring->next_to_use;
5927 if (tx_flags & IXGBE_TX_FLAGS_FCOE)
5928 /* excluding fcoe_crc_eof for FCoE */
5929 total -= sizeof(struct fcoe_crc_eof);
5931 len = min(skb_headlen(skb), total);
5933 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5934 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
5936 tx_buffer_info->length = size;
5937 tx_buffer_info->mapped_as_page = false;
5938 tx_buffer_info->dma = dma_map_single(&pdev->dev,
5940 size, DMA_TO_DEVICE);
5941 if (dma_mapping_error(&pdev->dev, tx_buffer_info->dma))
5943 tx_buffer_info->time_stamp = jiffies;
5944 tx_buffer_info->next_to_watch = i;
5953 if (i == tx_ring->count)
5958 for (f = 0; f < nr_frags; f++) {
5959 struct skb_frag_struct *frag;
5961 frag = &skb_shinfo(skb)->frags[f];
5962 len = min((unsigned int)frag->size, total);
5963 offset = frag->page_offset;
5967 if (i == tx_ring->count)
5970 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5971 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
5973 tx_buffer_info->length = size;
5974 tx_buffer_info->dma = dma_map_page(&adapter->pdev->dev,
5978 tx_buffer_info->mapped_as_page = true;
5979 if (dma_mapping_error(&pdev->dev, tx_buffer_info->dma))
5981 tx_buffer_info->time_stamp = jiffies;
5982 tx_buffer_info->next_to_watch = i;
5993 tx_ring->tx_buffer_info[i].skb = skb;
5994 tx_ring->tx_buffer_info[first].next_to_watch = i;
5999 e_dev_err("TX DMA map failed\n");
6001 /* clear timestamp and dma mappings for failed tx_buffer_info map */
6002 tx_buffer_info->dma = 0;
6003 tx_buffer_info->time_stamp = 0;
6004 tx_buffer_info->next_to_watch = 0;
6008 /* clear timestamp and dma mappings for remaining portion of packet */
6011 i += tx_ring->count;
6013 tx_buffer_info = &tx_ring->tx_buffer_info[i];
6014 ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info);
6020 static void ixgbe_tx_queue(struct ixgbe_adapter *adapter,
6021 struct ixgbe_ring *tx_ring,
6022 int tx_flags, int count, u32 paylen, u8 hdr_len)
6024 union ixgbe_adv_tx_desc *tx_desc = NULL;
6025 struct ixgbe_tx_buffer *tx_buffer_info;
6026 u32 olinfo_status = 0, cmd_type_len = 0;
6028 u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS;
6030 cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA;
6032 cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
6034 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
6035 cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE;
6037 if (tx_flags & IXGBE_TX_FLAGS_TSO) {
6038 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
6040 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
6041 IXGBE_ADVTXD_POPTS_SHIFT;
6043 /* use index 1 context for tso */
6044 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
6045 if (tx_flags & IXGBE_TX_FLAGS_IPV4)
6046 olinfo_status |= IXGBE_TXD_POPTS_IXSM <<
6047 IXGBE_ADVTXD_POPTS_SHIFT;
6049 } else if (tx_flags & IXGBE_TX_FLAGS_CSUM)
6050 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
6051 IXGBE_ADVTXD_POPTS_SHIFT;
6053 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
6054 olinfo_status |= IXGBE_ADVTXD_CC;
6055 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
6056 if (tx_flags & IXGBE_TX_FLAGS_FSO)
6057 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
6060 olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
6062 i = tx_ring->next_to_use;
6064 tx_buffer_info = &tx_ring->tx_buffer_info[i];
6065 tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, i);
6066 tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma);
6067 tx_desc->read.cmd_type_len =
6068 cpu_to_le32(cmd_type_len | tx_buffer_info->length);
6069 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
6071 if (i == tx_ring->count)
6075 tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd);
6078 * Force memory writes to complete before letting h/w
6079 * know there are new descriptors to fetch. (Only
6080 * applicable for weak-ordered memory model archs,
6085 tx_ring->next_to_use = i;
6086 writel(i, adapter->hw.hw_addr + tx_ring->tail);
6089 static void ixgbe_atr(struct ixgbe_adapter *adapter, struct sk_buff *skb,
6090 int queue, u32 tx_flags)
6092 struct ixgbe_atr_input atr_input;
6094 struct iphdr *iph = ip_hdr(skb);
6095 struct ethhdr *eth = (struct ethhdr *)skb->data;
6096 u16 vlan_id, src_port, dst_port, flex_bytes;
6097 u32 src_ipv4_addr, dst_ipv4_addr;
6100 /* Right now, we support IPv4 only */
6101 if (skb->protocol != htons(ETH_P_IP))
6103 /* check if we're UDP or TCP */
6104 if (iph->protocol == IPPROTO_TCP) {
6106 src_port = th->source;
6107 dst_port = th->dest;
6108 l4type |= IXGBE_ATR_L4TYPE_TCP;
6109 /* l4type IPv4 type is 0, no need to assign */
6111 /* Unsupported L4 header, just bail here */
6115 memset(&atr_input, 0, sizeof(struct ixgbe_atr_input));
6117 vlan_id = (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK) >>
6118 IXGBE_TX_FLAGS_VLAN_SHIFT;
6119 src_ipv4_addr = iph->saddr;
6120 dst_ipv4_addr = iph->daddr;
6121 flex_bytes = eth->h_proto;
6123 ixgbe_atr_set_vlan_id_82599(&atr_input, vlan_id);
6124 ixgbe_atr_set_src_port_82599(&atr_input, dst_port);
6125 ixgbe_atr_set_dst_port_82599(&atr_input, src_port);
6126 ixgbe_atr_set_flex_byte_82599(&atr_input, flex_bytes);
6127 ixgbe_atr_set_l4type_82599(&atr_input, l4type);
6128 /* src and dst are inverted, think how the receiver sees them */
6129 ixgbe_atr_set_src_ipv4_82599(&atr_input, dst_ipv4_addr);
6130 ixgbe_atr_set_dst_ipv4_82599(&atr_input, src_ipv4_addr);
6132 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
6133 ixgbe_fdir_add_signature_filter_82599(&adapter->hw, &atr_input, queue);
6136 static int __ixgbe_maybe_stop_tx(struct net_device *netdev,
6137 struct ixgbe_ring *tx_ring, int size)
6139 netif_stop_subqueue(netdev, tx_ring->queue_index);
6140 /* Herbert's original patch had:
6141 * smp_mb__after_netif_stop_queue();
6142 * but since that doesn't exist yet, just open code it. */
6145 /* We need to check again in a case another CPU has just
6146 * made room available. */
6147 if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
6150 /* A reprieve! - use start_queue because it doesn't call schedule */
6151 netif_start_subqueue(netdev, tx_ring->queue_index);
6152 ++tx_ring->restart_queue;
6156 static int ixgbe_maybe_stop_tx(struct net_device *netdev,
6157 struct ixgbe_ring *tx_ring, int size)
6159 if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
6161 return __ixgbe_maybe_stop_tx(netdev, tx_ring, size);
6164 static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb)
6166 struct ixgbe_adapter *adapter = netdev_priv(dev);
6167 int txq = smp_processor_id();
6170 if ((skb->protocol == htons(ETH_P_FCOE)) ||
6171 (skb->protocol == htons(ETH_P_FIP))) {
6172 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
6173 txq &= (adapter->ring_feature[RING_F_FCOE].indices - 1);
6174 txq += adapter->ring_feature[RING_F_FCOE].mask;
6176 #ifdef CONFIG_IXGBE_DCB
6177 } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6178 txq = adapter->fcoe.up;
6185 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
6186 while (unlikely(txq >= dev->real_num_tx_queues))
6187 txq -= dev->real_num_tx_queues;
6191 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6192 if (skb->priority == TC_PRIO_CONTROL)
6193 txq = adapter->ring_feature[RING_F_DCB].indices-1;
6195 txq = (skb->vlan_tci & IXGBE_TX_FLAGS_VLAN_PRIO_MASK)
6200 return skb_tx_hash(dev, skb);
6203 static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
6204 struct net_device *netdev)
6206 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6207 struct ixgbe_ring *tx_ring;
6208 struct netdev_queue *txq;
6210 unsigned int tx_flags = 0;
6216 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
6217 tx_flags |= vlan_tx_tag_get(skb);
6218 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6219 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
6220 tx_flags |= ((skb->queue_mapping & 0x7) << 13);
6222 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
6223 tx_flags |= IXGBE_TX_FLAGS_VLAN;
6224 } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED &&
6225 skb->priority != TC_PRIO_CONTROL) {
6226 tx_flags |= ((skb->queue_mapping & 0x7) << 13);
6227 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
6228 tx_flags |= IXGBE_TX_FLAGS_VLAN;
6231 tx_ring = adapter->tx_ring[skb->queue_mapping];
6234 /* for FCoE with DCB, we force the priority to what
6235 * was specified by the switch */
6236 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED &&
6237 (skb->protocol == htons(ETH_P_FCOE) ||
6238 skb->protocol == htons(ETH_P_FIP))) {
6239 #ifdef CONFIG_IXGBE_DCB
6240 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6241 tx_flags &= ~(IXGBE_TX_FLAGS_VLAN_PRIO_MASK
6242 << IXGBE_TX_FLAGS_VLAN_SHIFT);
6243 tx_flags |= ((adapter->fcoe.up << 13)
6244 << IXGBE_TX_FLAGS_VLAN_SHIFT);
6247 /* flag for FCoE offloads */
6248 if (skb->protocol == htons(ETH_P_FCOE))
6249 tx_flags |= IXGBE_TX_FLAGS_FCOE;
6253 /* four things can cause us to need a context descriptor */
6254 if (skb_is_gso(skb) ||
6255 (skb->ip_summed == CHECKSUM_PARTIAL) ||
6256 (tx_flags & IXGBE_TX_FLAGS_VLAN) ||
6257 (tx_flags & IXGBE_TX_FLAGS_FCOE))
6260 count += TXD_USE_COUNT(skb_headlen(skb));
6261 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
6262 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
6264 if (ixgbe_maybe_stop_tx(netdev, tx_ring, count)) {
6266 return NETDEV_TX_BUSY;
6269 first = tx_ring->next_to_use;
6270 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
6272 /* setup tx offload for FCoE */
6273 tso = ixgbe_fso(adapter, tx_ring, skb, tx_flags, &hdr_len);
6275 dev_kfree_skb_any(skb);
6276 return NETDEV_TX_OK;
6279 tx_flags |= IXGBE_TX_FLAGS_FSO;
6280 #endif /* IXGBE_FCOE */
6282 if (skb->protocol == htons(ETH_P_IP))
6283 tx_flags |= IXGBE_TX_FLAGS_IPV4;
6284 tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len);
6286 dev_kfree_skb_any(skb);
6287 return NETDEV_TX_OK;
6291 tx_flags |= IXGBE_TX_FLAGS_TSO;
6292 else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) &&
6293 (skb->ip_summed == CHECKSUM_PARTIAL))
6294 tx_flags |= IXGBE_TX_FLAGS_CSUM;
6297 count = ixgbe_tx_map(adapter, tx_ring, skb, tx_flags, first);
6299 /* add the ATR filter if ATR is on */
6300 if (tx_ring->atr_sample_rate) {
6301 ++tx_ring->atr_count;
6302 if ((tx_ring->atr_count >= tx_ring->atr_sample_rate) &&
6303 test_bit(__IXGBE_FDIR_INIT_DONE,
6304 &tx_ring->reinit_state)) {
6305 ixgbe_atr(adapter, skb, tx_ring->queue_index,
6307 tx_ring->atr_count = 0;
6310 txq = netdev_get_tx_queue(netdev, tx_ring->queue_index);
6311 txq->tx_bytes += skb->len;
6313 ixgbe_tx_queue(adapter, tx_ring, tx_flags, count, skb->len,
6315 ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED);
6318 dev_kfree_skb_any(skb);
6319 tx_ring->tx_buffer_info[first].time_stamp = 0;
6320 tx_ring->next_to_use = first;
6323 return NETDEV_TX_OK;
6327 * ixgbe_set_mac - Change the Ethernet Address of the NIC
6328 * @netdev: network interface device structure
6329 * @p: pointer to an address structure
6331 * Returns 0 on success, negative on failure
6333 static int ixgbe_set_mac(struct net_device *netdev, void *p)
6335 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6336 struct ixgbe_hw *hw = &adapter->hw;
6337 struct sockaddr *addr = p;
6339 if (!is_valid_ether_addr(addr->sa_data))
6340 return -EADDRNOTAVAIL;
6342 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
6343 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
6345 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
6352 ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr)
6354 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6355 struct ixgbe_hw *hw = &adapter->hw;
6359 if (prtad != hw->phy.mdio.prtad)
6361 rc = hw->phy.ops.read_reg(hw, addr, devad, &value);
6367 static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad,
6368 u16 addr, u16 value)
6370 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6371 struct ixgbe_hw *hw = &adapter->hw;
6373 if (prtad != hw->phy.mdio.prtad)
6375 return hw->phy.ops.write_reg(hw, addr, devad, value);
6378 static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
6380 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6382 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd);
6386 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
6388 * @netdev: network interface device structure
6390 * Returns non-zero on failure
6392 static int ixgbe_add_sanmac_netdev(struct net_device *dev)
6395 struct ixgbe_adapter *adapter = netdev_priv(dev);
6396 struct ixgbe_mac_info *mac = &adapter->hw.mac;
6398 if (is_valid_ether_addr(mac->san_addr)) {
6400 err = dev_addr_add(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
6407 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
6409 * @netdev: network interface device structure
6411 * Returns non-zero on failure
6413 static int ixgbe_del_sanmac_netdev(struct net_device *dev)
6416 struct ixgbe_adapter *adapter = netdev_priv(dev);
6417 struct ixgbe_mac_info *mac = &adapter->hw.mac;
6419 if (is_valid_ether_addr(mac->san_addr)) {
6421 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
6427 #ifdef CONFIG_NET_POLL_CONTROLLER
6429 * Polling 'interrupt' - used by things like netconsole to send skbs
6430 * without having to re-enable interrupts. It's not called while
6431 * the interrupt routine is executing.
6433 static void ixgbe_netpoll(struct net_device *netdev)
6435 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6438 /* if interface is down do nothing */
6439 if (test_bit(__IXGBE_DOWN, &adapter->state))
6442 adapter->flags |= IXGBE_FLAG_IN_NETPOLL;
6443 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
6444 int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
6445 for (i = 0; i < num_q_vectors; i++) {
6446 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
6447 ixgbe_msix_clean_many(0, q_vector);
6450 ixgbe_intr(adapter->pdev->irq, netdev);
6452 adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL;
6456 static const struct net_device_ops ixgbe_netdev_ops = {
6457 .ndo_open = ixgbe_open,
6458 .ndo_stop = ixgbe_close,
6459 .ndo_start_xmit = ixgbe_xmit_frame,
6460 .ndo_select_queue = ixgbe_select_queue,
6461 .ndo_set_rx_mode = ixgbe_set_rx_mode,
6462 .ndo_set_multicast_list = ixgbe_set_rx_mode,
6463 .ndo_validate_addr = eth_validate_addr,
6464 .ndo_set_mac_address = ixgbe_set_mac,
6465 .ndo_change_mtu = ixgbe_change_mtu,
6466 .ndo_tx_timeout = ixgbe_tx_timeout,
6467 .ndo_vlan_rx_register = ixgbe_vlan_rx_register,
6468 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
6469 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
6470 .ndo_do_ioctl = ixgbe_ioctl,
6471 .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac,
6472 .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan,
6473 .ndo_set_vf_tx_rate = ixgbe_ndo_set_vf_bw,
6474 .ndo_get_vf_config = ixgbe_ndo_get_vf_config,
6475 #ifdef CONFIG_NET_POLL_CONTROLLER
6476 .ndo_poll_controller = ixgbe_netpoll,
6479 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get,
6480 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put,
6481 .ndo_fcoe_enable = ixgbe_fcoe_enable,
6482 .ndo_fcoe_disable = ixgbe_fcoe_disable,
6483 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn,
6484 #endif /* IXGBE_FCOE */
6487 static void __devinit ixgbe_probe_vf(struct ixgbe_adapter *adapter,
6488 const struct ixgbe_info *ii)
6490 #ifdef CONFIG_PCI_IOV
6491 struct ixgbe_hw *hw = &adapter->hw;
6494 if (hw->mac.type != ixgbe_mac_82599EB || !max_vfs)
6497 /* The 82599 supports up to 64 VFs per physical function
6498 * but this implementation limits allocation to 63 so that
6499 * basic networking resources are still available to the
6502 adapter->num_vfs = (max_vfs > 63) ? 63 : max_vfs;
6503 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
6504 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
6506 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
6509 /* If call to enable VFs succeeded then allocate memory
6510 * for per VF control structures.
6513 kcalloc(adapter->num_vfs,
6514 sizeof(struct vf_data_storage), GFP_KERNEL);
6515 if (adapter->vfinfo) {
6516 /* Now that we're sure SR-IOV is enabled
6517 * and memory allocated set up the mailbox parameters
6519 ixgbe_init_mbx_params_pf(hw);
6520 memcpy(&hw->mbx.ops, ii->mbx_ops,
6521 sizeof(hw->mbx.ops));
6523 /* Disable RSC when in SR-IOV mode */
6524 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
6525 IXGBE_FLAG2_RSC_ENABLED);
6530 e_err(probe, "Unable to allocate memory for VF Data Storage - "
6531 "SRIOV disabled\n");
6532 pci_disable_sriov(adapter->pdev);
6535 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
6536 adapter->num_vfs = 0;
6537 #endif /* CONFIG_PCI_IOV */
6541 * ixgbe_probe - Device Initialization Routine
6542 * @pdev: PCI device information struct
6543 * @ent: entry in ixgbe_pci_tbl
6545 * Returns 0 on success, negative on failure
6547 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
6548 * The OS initialization, configuring of the adapter private structure,
6549 * and a hardware reset occur.
6551 static int __devinit ixgbe_probe(struct pci_dev *pdev,
6552 const struct pci_device_id *ent)
6554 struct net_device *netdev;
6555 struct ixgbe_adapter *adapter = NULL;
6556 struct ixgbe_hw *hw;
6557 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
6558 static int cards_found;
6559 int i, err, pci_using_dac;
6560 unsigned int indices = num_possible_cpus();
6566 /* Catch broken hardware that put the wrong VF device ID in
6567 * the PCIe SR-IOV capability.
6569 if (pdev->is_virtfn) {
6570 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
6571 pci_name(pdev), pdev->vendor, pdev->device);
6575 err = pci_enable_device_mem(pdev);
6579 if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
6580 !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
6583 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
6585 err = dma_set_coherent_mask(&pdev->dev,
6589 "No usable DMA configuration, aborting\n");
6596 err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
6597 IORESOURCE_MEM), ixgbe_driver_name);
6600 "pci_request_selected_regions failed 0x%x\n", err);
6604 pci_enable_pcie_error_reporting(pdev);
6606 pci_set_master(pdev);
6607 pci_save_state(pdev);
6609 if (ii->mac == ixgbe_mac_82598EB)
6610 indices = min_t(unsigned int, indices, IXGBE_MAX_RSS_INDICES);
6612 indices = min_t(unsigned int, indices, IXGBE_MAX_FDIR_INDICES);
6614 indices = max_t(unsigned int, indices, IXGBE_MAX_DCB_INDICES);
6616 indices += min_t(unsigned int, num_possible_cpus(),
6617 IXGBE_MAX_FCOE_INDICES);
6619 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices);
6622 goto err_alloc_etherdev;
6625 SET_NETDEV_DEV(netdev, &pdev->dev);
6627 pci_set_drvdata(pdev, netdev);
6628 adapter = netdev_priv(netdev);
6630 adapter->netdev = netdev;
6631 adapter->pdev = pdev;
6634 adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
6636 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
6637 pci_resource_len(pdev, 0));
6643 for (i = 1; i <= 5; i++) {
6644 if (pci_resource_len(pdev, i) == 0)
6648 netdev->netdev_ops = &ixgbe_netdev_ops;
6649 ixgbe_set_ethtool_ops(netdev);
6650 netdev->watchdog_timeo = 5 * HZ;
6651 strcpy(netdev->name, pci_name(pdev));
6653 adapter->bd_number = cards_found;
6656 memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
6657 hw->mac.type = ii->mac;
6660 memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops));
6661 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
6662 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
6663 if (!(eec & (1 << 8)))
6664 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
6667 memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops));
6668 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
6669 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
6670 hw->phy.mdio.prtad = MDIO_PRTAD_NONE;
6671 hw->phy.mdio.mmds = 0;
6672 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
6673 hw->phy.mdio.dev = netdev;
6674 hw->phy.mdio.mdio_read = ixgbe_mdio_read;
6675 hw->phy.mdio.mdio_write = ixgbe_mdio_write;
6677 /* set up this timer and work struct before calling get_invariants
6678 * which might start the timer
6680 init_timer(&adapter->sfp_timer);
6681 adapter->sfp_timer.function = &ixgbe_sfp_timer;
6682 adapter->sfp_timer.data = (unsigned long) adapter;
6684 INIT_WORK(&adapter->sfp_task, ixgbe_sfp_task);
6686 /* multispeed fiber has its own tasklet, called from GPI SDP1 context */
6687 INIT_WORK(&adapter->multispeed_fiber_task, ixgbe_multispeed_fiber_task);
6689 /* a new SFP+ module arrival, called from GPI SDP2 context */
6690 INIT_WORK(&adapter->sfp_config_module_task,
6691 ixgbe_sfp_config_module_task);
6693 ii->get_invariants(hw);
6695 /* setup the private structure */
6696 err = ixgbe_sw_init(adapter);
6700 /* Make it possible the adapter to be woken up via WOL */
6701 if (adapter->hw.mac.type == ixgbe_mac_82599EB)
6702 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
6705 * If there is a fan on this device and it has failed log the
6708 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
6709 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
6710 if (esdp & IXGBE_ESDP_SDP1)
6711 e_crit(probe, "Fan has stopped, replace the adapter\n");
6714 /* reset_hw fills in the perm_addr as well */
6715 hw->phy.reset_if_overtemp = true;
6716 err = hw->mac.ops.reset_hw(hw);
6717 hw->phy.reset_if_overtemp = false;
6718 if (err == IXGBE_ERR_SFP_NOT_PRESENT &&
6719 hw->mac.type == ixgbe_mac_82598EB) {
6721 * Start a kernel thread to watch for a module to arrive.
6722 * Only do this for 82598, since 82599 will generate
6723 * interrupts on module arrival.
6725 set_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
6726 mod_timer(&adapter->sfp_timer,
6727 round_jiffies(jiffies + (2 * HZ)));
6729 } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
6730 e_dev_err("failed to initialize because an unsupported SFP+ "
6731 "module type was detected.\n");
6732 e_dev_err("Reload the driver after installing a supported "
6736 e_dev_err("HW Init failed: %d\n", err);
6740 ixgbe_probe_vf(adapter, ii);
6742 netdev->features = NETIF_F_SG |
6744 NETIF_F_HW_VLAN_TX |
6745 NETIF_F_HW_VLAN_RX |
6746 NETIF_F_HW_VLAN_FILTER;
6748 netdev->features |= NETIF_F_IPV6_CSUM;
6749 netdev->features |= NETIF_F_TSO;
6750 netdev->features |= NETIF_F_TSO6;
6751 netdev->features |= NETIF_F_GRO;
6753 if (adapter->hw.mac.type == ixgbe_mac_82599EB)
6754 netdev->features |= NETIF_F_SCTP_CSUM;
6756 netdev->vlan_features |= NETIF_F_TSO;
6757 netdev->vlan_features |= NETIF_F_TSO6;
6758 netdev->vlan_features |= NETIF_F_IP_CSUM;
6759 netdev->vlan_features |= NETIF_F_IPV6_CSUM;
6760 netdev->vlan_features |= NETIF_F_SG;
6762 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
6763 adapter->flags &= ~(IXGBE_FLAG_RSS_ENABLED |
6764 IXGBE_FLAG_DCB_ENABLED);
6765 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
6766 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
6768 #ifdef CONFIG_IXGBE_DCB
6769 netdev->dcbnl_ops = &dcbnl_ops;
6773 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
6774 if (hw->mac.ops.get_device_caps) {
6775 hw->mac.ops.get_device_caps(hw, &device_caps);
6776 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)
6777 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
6780 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
6781 netdev->vlan_features |= NETIF_F_FCOE_CRC;
6782 netdev->vlan_features |= NETIF_F_FSO;
6783 netdev->vlan_features |= NETIF_F_FCOE_MTU;
6785 #endif /* IXGBE_FCOE */
6787 netdev->features |= NETIF_F_HIGHDMA;
6789 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
6790 netdev->features |= NETIF_F_LRO;
6792 /* make sure the EEPROM is good */
6793 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
6794 e_dev_err("The EEPROM Checksum Is Not Valid\n");
6799 memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len);
6800 memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len);
6802 if (ixgbe_validate_mac_addr(netdev->perm_addr)) {
6803 e_dev_err("invalid MAC address\n");
6808 /* power down the optics */
6809 if (hw->phy.multispeed_fiber)
6810 hw->mac.ops.disable_tx_laser(hw);
6812 init_timer(&adapter->watchdog_timer);
6813 adapter->watchdog_timer.function = &ixgbe_watchdog;
6814 adapter->watchdog_timer.data = (unsigned long)adapter;
6816 INIT_WORK(&adapter->reset_task, ixgbe_reset_task);
6817 INIT_WORK(&adapter->watchdog_task, ixgbe_watchdog_task);
6819 err = ixgbe_init_interrupt_scheme(adapter);
6823 switch (pdev->device) {
6824 case IXGBE_DEV_ID_82599_KX4:
6825 adapter->wol = (IXGBE_WUFC_MAG | IXGBE_WUFC_EX |
6826 IXGBE_WUFC_MC | IXGBE_WUFC_BC);
6832 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
6834 /* pick up the PCI bus settings for reporting later */
6835 hw->mac.ops.get_bus_info(hw);
6837 /* print bus type/speed/width info */
6838 e_dev_info("(PCI Express:%s:%s) %pM\n",
6839 ((hw->bus.speed == ixgbe_bus_speed_5000) ? "5.0Gb/s":
6840 (hw->bus.speed == ixgbe_bus_speed_2500) ? "2.5Gb/s":"Unknown"),
6841 ((hw->bus.width == ixgbe_bus_width_pcie_x8) ? "Width x8" :
6842 (hw->bus.width == ixgbe_bus_width_pcie_x4) ? "Width x4" :
6843 (hw->bus.width == ixgbe_bus_width_pcie_x1) ? "Width x1" :
6846 ixgbe_read_pba_num_generic(hw, &part_num);
6847 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present)
6848 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, "
6849 "PBA No: %06x-%03x\n",
6850 hw->mac.type, hw->phy.type, hw->phy.sfp_type,
6851 (part_num >> 8), (part_num & 0xff));
6853 e_dev_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
6854 hw->mac.type, hw->phy.type,
6855 (part_num >> 8), (part_num & 0xff));
6857 if (hw->bus.width <= ixgbe_bus_width_pcie_x4) {
6858 e_dev_warn("PCI-Express bandwidth available for this card is "
6859 "not sufficient for optimal performance.\n");
6860 e_dev_warn("For optimal performance a x8 PCI-Express slot "
6864 /* save off EEPROM version number */
6865 hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version);
6867 /* reset the hardware with the new settings */
6868 err = hw->mac.ops.start_hw(hw);
6870 if (err == IXGBE_ERR_EEPROM_VERSION) {
6871 /* We are running on a pre-production device, log a warning */
6872 e_dev_warn("This device is a pre-production adapter/LOM. "
6873 "Please be aware there may be issues associated "
6874 "with your hardware. If you are experiencing "
6875 "problems please contact your Intel or hardware "
6876 "representative who provided you with this "
6879 strcpy(netdev->name, "eth%d");
6880 err = register_netdev(netdev);
6884 /* carrier off reporting is important to ethtool even BEFORE open */
6885 netif_carrier_off(netdev);
6887 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
6888 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
6889 INIT_WORK(&adapter->fdir_reinit_task, ixgbe_fdir_reinit_task);
6891 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
6892 INIT_WORK(&adapter->check_overtemp_task, ixgbe_check_overtemp_task);
6893 #ifdef CONFIG_IXGBE_DCA
6894 if (dca_add_requester(&pdev->dev) == 0) {
6895 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
6896 ixgbe_setup_dca(adapter);
6899 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
6900 e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs);
6901 for (i = 0; i < adapter->num_vfs; i++)
6902 ixgbe_vf_configuration(pdev, (i | 0x10000000));
6905 /* add san mac addr to netdev */
6906 ixgbe_add_sanmac_netdev(netdev);
6908 e_dev_info("Intel(R) 10 Gigabit Network Connection\n");
6913 ixgbe_release_hw_control(adapter);
6914 ixgbe_clear_interrupt_scheme(adapter);
6917 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
6918 ixgbe_disable_sriov(adapter);
6919 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
6920 del_timer_sync(&adapter->sfp_timer);
6921 cancel_work_sync(&adapter->sfp_task);
6922 cancel_work_sync(&adapter->multispeed_fiber_task);
6923 cancel_work_sync(&adapter->sfp_config_module_task);
6924 iounmap(hw->hw_addr);
6926 free_netdev(netdev);
6928 pci_release_selected_regions(pdev, pci_select_bars(pdev,
6932 pci_disable_device(pdev);
6937 * ixgbe_remove - Device Removal Routine
6938 * @pdev: PCI device information struct
6940 * ixgbe_remove is called by the PCI subsystem to alert the driver
6941 * that it should release a PCI device. The could be caused by a
6942 * Hot-Plug event, or because the driver is going to be removed from
6945 static void __devexit ixgbe_remove(struct pci_dev *pdev)
6947 struct net_device *netdev = pci_get_drvdata(pdev);
6948 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6950 set_bit(__IXGBE_DOWN, &adapter->state);
6951 /* clear the module not found bit to make sure the worker won't
6954 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
6955 del_timer_sync(&adapter->watchdog_timer);
6957 del_timer_sync(&adapter->sfp_timer);
6958 cancel_work_sync(&adapter->watchdog_task);
6959 cancel_work_sync(&adapter->sfp_task);
6960 cancel_work_sync(&adapter->multispeed_fiber_task);
6961 cancel_work_sync(&adapter->sfp_config_module_task);
6962 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
6963 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
6964 cancel_work_sync(&adapter->fdir_reinit_task);
6965 flush_scheduled_work();
6967 #ifdef CONFIG_IXGBE_DCA
6968 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
6969 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
6970 dca_remove_requester(&pdev->dev);
6971 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
6976 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
6977 ixgbe_cleanup_fcoe(adapter);
6979 #endif /* IXGBE_FCOE */
6981 /* remove the added san mac */
6982 ixgbe_del_sanmac_netdev(netdev);
6984 if (netdev->reg_state == NETREG_REGISTERED)
6985 unregister_netdev(netdev);
6987 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
6988 ixgbe_disable_sriov(adapter);
6990 ixgbe_clear_interrupt_scheme(adapter);
6992 ixgbe_release_hw_control(adapter);
6994 iounmap(adapter->hw.hw_addr);
6995 pci_release_selected_regions(pdev, pci_select_bars(pdev,
6998 e_dev_info("complete\n");
7000 free_netdev(netdev);
7002 pci_disable_pcie_error_reporting(pdev);
7004 pci_disable_device(pdev);
7008 * ixgbe_io_error_detected - called when PCI error is detected
7009 * @pdev: Pointer to PCI device
7010 * @state: The current pci connection state
7012 * This function is called after a PCI bus error affecting
7013 * this device has been detected.
7015 static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
7016 pci_channel_state_t state)
7018 struct net_device *netdev = pci_get_drvdata(pdev);
7019 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7021 netif_device_detach(netdev);
7023 if (state == pci_channel_io_perm_failure)
7024 return PCI_ERS_RESULT_DISCONNECT;
7026 if (netif_running(netdev))
7027 ixgbe_down(adapter);
7028 pci_disable_device(pdev);
7030 /* Request a slot reset. */
7031 return PCI_ERS_RESULT_NEED_RESET;
7035 * ixgbe_io_slot_reset - called after the pci bus has been reset.
7036 * @pdev: Pointer to PCI device
7038 * Restart the card from scratch, as if from a cold-boot.
7040 static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
7042 struct net_device *netdev = pci_get_drvdata(pdev);
7043 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7044 pci_ers_result_t result;
7047 if (pci_enable_device_mem(pdev)) {
7048 e_err(probe, "Cannot re-enable PCI device after reset.\n");
7049 result = PCI_ERS_RESULT_DISCONNECT;
7051 pci_set_master(pdev);
7052 pci_restore_state(pdev);
7053 pci_save_state(pdev);
7055 pci_wake_from_d3(pdev, false);
7057 ixgbe_reset(adapter);
7058 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
7059 result = PCI_ERS_RESULT_RECOVERED;
7062 err = pci_cleanup_aer_uncorrect_error_status(pdev);
7064 e_dev_err("pci_cleanup_aer_uncorrect_error_status "
7065 "failed 0x%0x\n", err);
7066 /* non-fatal, continue */
7073 * ixgbe_io_resume - called when traffic can start flowing again.
7074 * @pdev: Pointer to PCI device
7076 * This callback is called when the error recovery driver tells us that
7077 * its OK to resume normal operation.
7079 static void ixgbe_io_resume(struct pci_dev *pdev)
7081 struct net_device *netdev = pci_get_drvdata(pdev);
7082 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7084 if (netif_running(netdev)) {
7085 if (ixgbe_up(adapter)) {
7086 e_info(probe, "ixgbe_up failed after reset\n");
7091 netif_device_attach(netdev);
7094 static struct pci_error_handlers ixgbe_err_handler = {
7095 .error_detected = ixgbe_io_error_detected,
7096 .slot_reset = ixgbe_io_slot_reset,
7097 .resume = ixgbe_io_resume,
7100 static struct pci_driver ixgbe_driver = {
7101 .name = ixgbe_driver_name,
7102 .id_table = ixgbe_pci_tbl,
7103 .probe = ixgbe_probe,
7104 .remove = __devexit_p(ixgbe_remove),
7106 .suspend = ixgbe_suspend,
7107 .resume = ixgbe_resume,
7109 .shutdown = ixgbe_shutdown,
7110 .err_handler = &ixgbe_err_handler
7114 * ixgbe_init_module - Driver Registration Routine
7116 * ixgbe_init_module is the first routine called when the driver is
7117 * loaded. All it does is register with the PCI subsystem.
7119 static int __init ixgbe_init_module(void)
7122 pr_info("%s - version %s\n", ixgbe_driver_string,
7123 ixgbe_driver_version);
7124 pr_info("%s\n", ixgbe_copyright);
7126 #ifdef CONFIG_IXGBE_DCA
7127 dca_register_notify(&dca_notifier);
7130 ret = pci_register_driver(&ixgbe_driver);
7134 module_init(ixgbe_init_module);
7137 * ixgbe_exit_module - Driver Exit Cleanup Routine
7139 * ixgbe_exit_module is called just before the driver is removed
7142 static void __exit ixgbe_exit_module(void)
7144 #ifdef CONFIG_IXGBE_DCA
7145 dca_unregister_notify(&dca_notifier);
7147 pci_unregister_driver(&ixgbe_driver);
7150 #ifdef CONFIG_IXGBE_DCA
7151 static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event,
7156 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event,
7157 __ixgbe_notify_dca);
7159 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
7162 #endif /* CONFIG_IXGBE_DCA */
7165 * ixgbe_get_hw_dev return device
7166 * used by hardware layer to print debugging information
7168 struct net_device *ixgbe_get_hw_dev(struct ixgbe_hw *hw)
7170 struct ixgbe_adapter *adapter = hw->back;
7171 return adapter->netdev;
7174 module_exit(ixgbe_exit_module);