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ixgbe: drop ring->head, make ring->tail a pointer instead of offset
[net-next-2.6.git] / drivers / net / ixgbe / ixgbe_main.c
CommitLineData
9a799d71
AK		 1/*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
8c47eaa7 4 Copyright(c) 1999 - 2010 Intel Corporation.
9a799d71
AK		 5
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.
9
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
13 more details.
14
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.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
9a799d71
AK		 23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25
26*******************************************************************************/
27
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>
34#include <linux/in.h>
35#include <linux/ip.h>
36#include <linux/tcp.h>
60127865 37#include <linux/pkt_sched.h>
9a799d71 38#include <linux/ipv6.h>
5a0e3ad6 39#include <linux/slab.h>
9a799d71
AK		 40#include <net/checksum.h>
41#include <net/ip6_checksum.h>
42#include <linux/ethtool.h>
43#include <linux/if_vlan.h>
eacd73f7 44#include <scsi/fc/fc_fcoe.h>
9a799d71
AK		 45
46#include "ixgbe.h"
47#include "ixgbe_common.h"
ee5f784a 48#include "ixgbe_dcb_82599.h"
1cdd1ec8 49#include "ixgbe_sriov.h"
9a799d71
AK		 50
51char ixgbe_driver_name[] = "ixgbe";
9c8eb720 52static const char ixgbe_driver_string[] =
e8e9f696 53 "Intel(R) 10 Gigabit PCI Express Network Driver";
9a799d71 54
99faf68e 55#define DRV_VERSION "2.0.84-k2"
9c8eb720 56const char ixgbe_driver_version[] = DRV_VERSION;
8c47eaa7 57static char ixgbe_copyright[] = "Copyright (c) 1999-2010 Intel Corporation.";
9a799d71
AK		 58
59static const struct ixgbe_info *ixgbe_info_tbl[] = {
b4617240 60 [board_82598] = &ixgbe_82598_info,
e8e26350 61 [board_82599] = &ixgbe_82599_info,
9a799d71
AK		 62};
63
64/* ixgbe_pci_tbl - PCI Device ID Table
65 *
66 * Wildcard entries (PCI_ANY_ID) should come last
67 * Last entry must be all 0s
68 *
69 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
70 * Class, Class Mask, private data (not used) }
71 */
a3aa1884 72static DEFINE_PCI_DEVICE_TABLE(ixgbe_pci_tbl) = {
1e336d0f
DS		 73 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598),
74 board_82598 },
9a799d71 75 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT),
3957d63d 76 board_82598 },
9a799d71 77 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT),
3957d63d 78 board_82598 },
0befdb3e
JB		 79 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT),
80 board_82598 },
3845bec0
PWJ		 81 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2),
82 board_82598 },
9a799d71 83 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4),
3957d63d 84 board_82598 },
8d792cd9
JB		 85 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT),
86 board_82598 },
c4900be0
DS		 87 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT),
88 board_82598 },
89 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM),
90 board_82598 },
b95f5fcb
JB		 91 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR),
92 board_82598 },
c4900be0
DS		 93 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM),
94 board_82598 },
2f21bdd3
DS		 95 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX),
96 board_82598 },
e8e26350
PW		 97 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4),
98 board_82599 },
1fcf03e6
PWJ		 99 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM),
100 board_82599 },
74757d49
DS		 101 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR),
102 board_82599 },
e8e26350
PW		 103 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP),
104 board_82599 },
38ad1c8e
DS		 105 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM),
106 board_82599 },
dbfec662
DS		 107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ),
108 board_82599 },
8911184f
PWJ		 109 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4),
110 board_82599 },
119fc60a
MC		 111 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM),
112 board_82599 },
312eb931
DS		 113 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE),
114 board_82599 },
9a799d71
AK		 115
116 /* required last entry */
117 {0, }
118};
119MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl);
120
5dd2d332 121#ifdef CONFIG_IXGBE_DCA
bd0362dd 122static int ixgbe_notify_dca(struct notifier_block *, unsigned long event,
e8e9f696 123 void *p);
bd0362dd
JC		 124static struct notifier_block dca_notifier = {
125 .notifier_call = ixgbe_notify_dca,
126 .next = NULL,
127 .priority = 0
128};
129#endif
130
1cdd1ec8
GR		 131#ifdef CONFIG_PCI_IOV
132static unsigned int max_vfs;
133module_param(max_vfs, uint, 0);
e8e9f696
JP		 134MODULE_PARM_DESC(max_vfs,
135 "Maximum number of virtual functions to allocate per physical function");
1cdd1ec8
GR		 136#endif /* CONFIG_PCI_IOV */
137
9a799d71
AK		 138MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
139MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
140MODULE_LICENSE("GPL");
141MODULE_VERSION(DRV_VERSION);
142
143#define DEFAULT_DEBUG_LEVEL_SHIFT 3
144
1cdd1ec8
GR		 145static inline void ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
146{
147 struct ixgbe_hw *hw = &adapter->hw;
148 u32 gcr;
149 u32 gpie;
150 u32 vmdctl;
151
152#ifdef CONFIG_PCI_IOV
153 /* disable iov and allow time for transactions to clear */
154 pci_disable_sriov(adapter->pdev);
155#endif
156
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);
164
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);
169
170 /* take a breather then clean up driver data */
171 msleep(100);
e8e9f696
JP		 172
173 kfree(adapter->vfinfo);
1cdd1ec8
GR		 174 adapter->vfinfo = NULL;
175
176 adapter->num_vfs = 0;
177 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
178}
179
dcd79aeb
TI		 180struct ixgbe_reg_info {
181 u32 ofs;
182 char *name;
183};
184
185static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = {
186
187 /* General Registers */
188 {IXGBE_CTRL, "CTRL"},
189 {IXGBE_STATUS, "STATUS"},
190 {IXGBE_CTRL_EXT, "CTRL_EXT"},
191
192 /* Interrupt Registers */
193 {IXGBE_EICR, "EICR"},
194
195 /* RX Registers */
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"},
204
205 /* TX Registers */
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"},
212
213 /* List Terminator */
214 {}
215};
216
217
218/*
219 * ixgbe_regdump - register printout routine
220 */
221static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo)
222{
223 int i = 0, j = 0;
224 char rname[16];
225 u32 regs[64];
226
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));
231 break;
232 case IXGBE_DCA_RXCTRL(0):
233 for (i = 0; i < 64; i++)
234 regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
235 break;
236 case IXGBE_RDLEN(0):
237 for (i = 0; i < 64; i++)
238 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i));
239 break;
240 case IXGBE_RDH(0):
241 for (i = 0; i < 64; i++)
242 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i));
243 break;
244 case IXGBE_RDT(0):
245 for (i = 0; i < 64; i++)
246 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i));
247 break;
248 case IXGBE_RXDCTL(0):
249 for (i = 0; i < 64; i++)
250 regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
251 break;
252 case IXGBE_RDBAL(0):
253 for (i = 0; i < 64; i++)
254 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i));
255 break;
256 case IXGBE_RDBAH(0):
257 for (i = 0; i < 64; i++)
258 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i));
259 break;
260 case IXGBE_TDBAL(0):
261 for (i = 0; i < 64; i++)
262 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i));
263 break;
264 case IXGBE_TDBAH(0):
265 for (i = 0; i < 64; i++)
266 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i));
267 break;
268 case IXGBE_TDLEN(0):
269 for (i = 0; i < 64; i++)
270 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i));
271 break;
272 case IXGBE_TDH(0):
273 for (i = 0; i < 64; i++)
274 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i));
275 break;
276 case IXGBE_TDT(0):
277 for (i = 0; i < 64; i++)
278 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i));
279 break;
280 case IXGBE_TXDCTL(0):
281 for (i = 0; i < 64; i++)
282 regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
283 break;
284 default:
c7689578 285 pr_info("%-15s %08x\n", reginfo->name,
dcd79aeb
TI		 286 IXGBE_READ_REG(hw, reginfo->ofs));
287 return;
288 }
289
290 for (i = 0; i < 8; i++) {
291 snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i*8, i*8+7);
c7689578 292 pr_err("%-15s", rname);
dcd79aeb 293 for (j = 0; j < 8; j++)
c7689578
JP		 294 pr_cont(" %08x", regs[i*8+j]);
295 pr_cont("\n");
dcd79aeb
TI		 296 }
297
298}
299
300/*
301 * ixgbe_dump - Print registers, tx-rings and rx-rings
302 */
303static void ixgbe_dump(struct ixgbe_adapter *adapter)
304{
305 struct net_device *netdev = adapter->netdev;
306 struct ixgbe_hw *hw = &adapter->hw;
307 struct ixgbe_reg_info *reginfo;
308 int n = 0;
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;
316 u32 staterr;
317 int i = 0;
318
319 if (!netif_msg_hw(adapter))
320 return;
321
322 /* Print netdevice Info */
323 if (netdev) {
324 dev_info(&adapter->pdev->dev, "Net device Info\n");
c7689578 325 pr_info("Device Name state "
dcd79aeb 326 "trans_start last_rx\n");
c7689578
JP		 327 pr_info("%-15s %016lX %016lX %016lX\n",
328 netdev->name,
329 netdev->state,
330 netdev->trans_start,
331 netdev->last_rx);
dcd79aeb
TI		 332 }
333
334 /* Print Registers */
335 dev_info(&adapter->pdev->dev, "Register Dump\n");
c7689578 336 pr_info(" Register Name Value\n");
dcd79aeb
TI		 337 for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl;
338 reginfo->name; reginfo++) {
339 ixgbe_regdump(hw, reginfo);
340 }
341
342 /* Print TX Ring Summary */
343 if (!netdev || !netif_running(netdev))
344 goto exit;
345
346 dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
c7689578 347 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
dcd79aeb
TI		 348 for (n = 0; n < adapter->num_tx_queues; n++) {
349 tx_ring = adapter->tx_ring[n];
350 tx_buffer_info =
351 &tx_ring->tx_buffer_info[tx_ring->next_to_clean];
c7689578 352 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
dcd79aeb
TI		 353 n, tx_ring->next_to_use, tx_ring->next_to_clean,
354 (u64)tx_buffer_info->dma,
355 tx_buffer_info->length,
356 tx_buffer_info->next_to_watch,
357 (u64)tx_buffer_info->time_stamp);
358 }
359
360 /* Print TX Rings */
361 if (!netif_msg_tx_done(adapter))
362 goto rx_ring_summary;
363
364 dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
365
366 /* Transmit Descriptor Formats
367 *
368 * Advanced Transmit Descriptor
369 * +--------------------------------------------------------------+
370 * 0 | Buffer Address [63:0] |
371 * +--------------------------------------------------------------+
372 * 8 | PAYLEN | PORTS | IDX | STA | DCMD |DTYP | RSV | DTALEN |
373 * +--------------------------------------------------------------+
374 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0
375 */
376
377 for (n = 0; n < adapter->num_tx_queues; n++) {
378 tx_ring = adapter->tx_ring[n];
c7689578
JP		 379 pr_info("------------------------------------\n");
380 pr_info("TX QUEUE INDEX = %d\n", tx_ring->queue_index);
381 pr_info("------------------------------------\n");
382 pr_info("T [desc] [address 63:0 ] "
dcd79aeb
TI		 383 "[PlPOIdStDDt Ln] [bi->dma ] "
384 "leng ntw timestamp bi->skb\n");
385
386 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
31f05a2d 387 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
dcd79aeb
TI		 388 tx_buffer_info = &tx_ring->tx_buffer_info[i];
389 u0 = (struct my_u0 *)tx_desc;
c7689578 390 pr_info("T [0x%03X] %016llX %016llX %016llX"
dcd79aeb
TI		 391 " %04X %3X %016llX %p", i,
392 le64_to_cpu(u0->a),
393 le64_to_cpu(u0->b),
394 (u64)tx_buffer_info->dma,
395 tx_buffer_info->length,
396 tx_buffer_info->next_to_watch,
397 (u64)tx_buffer_info->time_stamp,
398 tx_buffer_info->skb);
399 if (i == tx_ring->next_to_use &&
400 i == tx_ring->next_to_clean)
c7689578 401 pr_cont(" NTC/U\n");
dcd79aeb 402 else if (i == tx_ring->next_to_use)
c7689578 403 pr_cont(" NTU\n");
dcd79aeb 404 else if (i == tx_ring->next_to_clean)
c7689578 405 pr_cont(" NTC\n");
dcd79aeb 406 else
c7689578 407 pr_cont("\n");
dcd79aeb
TI		 408
409 if (netif_msg_pktdata(adapter) &&
410 tx_buffer_info->dma != 0)
411 print_hex_dump(KERN_INFO, "",
412 DUMP_PREFIX_ADDRESS, 16, 1,
413 phys_to_virt(tx_buffer_info->dma),
414 tx_buffer_info->length, true);
415 }
416 }
417
418 /* Print RX Rings Summary */
419rx_ring_summary:
420 dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
c7689578 421 pr_info("Queue [NTU] [NTC]\n");
dcd79aeb
TI		 422 for (n = 0; n < adapter->num_rx_queues; n++) {
423 rx_ring = adapter->rx_ring[n];
c7689578
JP		 424 pr_info("%5d %5X %5X\n",
425 n, rx_ring->next_to_use, rx_ring->next_to_clean);
dcd79aeb
TI		 426 }
427
428 /* Print RX Rings */
429 if (!netif_msg_rx_status(adapter))
430 goto exit;
431
432 dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
433
434 /* Advanced Receive Descriptor (Read) Format
435 * 63 1 0
436 * +-----------------------------------------------------+
437 * 0 | Packet Buffer Address [63:1] |A0/NSE|
438 * +----------------------------------------------+------+
439 * 8 | Header Buffer Address [63:1] | DD |
440 * +-----------------------------------------------------+
441 *
442 *
443 * Advanced Receive Descriptor (Write-Back) Format
444 *
445 * 63 48 47 32 31 30 21 20 16 15 4 3 0
446 * +------------------------------------------------------+
447 * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS |
448 * | Checksum Ident | | | | Type | Type |
449 * +------------------------------------------------------+
450 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
451 * +------------------------------------------------------+
452 * 63 48 47 32 31 20 19 0
453 */
454 for (n = 0; n < adapter->num_rx_queues; n++) {
455 rx_ring = adapter->rx_ring[n];
c7689578
JP		 456 pr_info("------------------------------------\n");
457 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index);
458 pr_info("------------------------------------\n");
459 pr_info("R [desc] [ PktBuf A0] "
dcd79aeb
TI		 460 "[ HeadBuf DD] [bi->dma ] [bi->skb] "
461 "<-- Adv Rx Read format\n");
c7689578 462 pr_info("RWB[desc] [PcsmIpSHl PtRs] "
dcd79aeb
TI		 463 "[vl er S cks ln] ---------------- [bi->skb] "
464 "<-- Adv Rx Write-Back format\n");
465
466 for (i = 0; i < rx_ring->count; i++) {
467 rx_buffer_info = &rx_ring->rx_buffer_info[i];
31f05a2d 468 rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
dcd79aeb
TI		 469 u0 = (struct my_u0 *)rx_desc;
470 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
471 if (staterr & IXGBE_RXD_STAT_DD) {
472 /* Descriptor Done */
c7689578 473 pr_info("RWB[0x%03X] %016llX "
dcd79aeb
TI		 474 "%016llX ---------------- %p", i,
475 le64_to_cpu(u0->a),
476 le64_to_cpu(u0->b),
477 rx_buffer_info->skb);
478 } else {
c7689578 479 pr_info("R [0x%03X] %016llX "
dcd79aeb
TI		 480 "%016llX %016llX %p", i,
481 le64_to_cpu(u0->a),
482 le64_to_cpu(u0->b),
483 (u64)rx_buffer_info->dma,
484 rx_buffer_info->skb);
485
486 if (netif_msg_pktdata(adapter)) {
487 print_hex_dump(KERN_INFO, "",
488 DUMP_PREFIX_ADDRESS, 16, 1,
489 phys_to_virt(rx_buffer_info->dma),
490 rx_ring->rx_buf_len, true);
491
492 if (rx_ring->rx_buf_len
493 < IXGBE_RXBUFFER_2048)
494 print_hex_dump(KERN_INFO, "",
495 DUMP_PREFIX_ADDRESS, 16, 1,
496 phys_to_virt(
497 rx_buffer_info->page_dma +
498 rx_buffer_info->page_offset
499 ),
500 PAGE_SIZE/2, true);
501 }
502 }
503
504 if (i == rx_ring->next_to_use)
c7689578 505 pr_cont(" NTU\n");
dcd79aeb 506 else if (i == rx_ring->next_to_clean)
c7689578 507 pr_cont(" NTC\n");
dcd79aeb 508 else
c7689578 509 pr_cont("\n");
dcd79aeb
TI		 510
511 }
512 }
513
514exit:
515 return;
516}
517
5eba3699
AV		 518static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter)
519{
520 u32 ctrl_ext;
521
522 /* Let firmware take over control of h/w */
523 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
524 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
e8e9f696 525 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
5eba3699
AV		 526}
527
528static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter)
529{
530 u32 ctrl_ext;
531
532 /* Let firmware know the driver has taken over */
533 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
534 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
e8e9f696 535 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
5eba3699 536}
9a799d71 537
e8e26350
PW		 538/*
539 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
540 * @adapter: pointer to adapter struct
541 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
542 * @queue: queue to map the corresponding interrupt to
543 * @msix_vector: the vector to map to the corresponding queue
544 *
545 */
546static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction,
e8e9f696 547 u8 queue, u8 msix_vector)
9a799d71
AK		 548{
549 u32 ivar, index;
e8e26350
PW		 550 struct ixgbe_hw *hw = &adapter->hw;
551 switch (hw->mac.type) {
552 case ixgbe_mac_82598EB:
553 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
554 if (direction == -1)
555 direction = 0;
556 index = (((direction * 64) + queue) >> 2) & 0x1F;
557 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
558 ivar &= ~(0xFF << (8 * (queue & 0x3)));
559 ivar |= (msix_vector << (8 * (queue & 0x3)));
560 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
561 break;
562 case ixgbe_mac_82599EB:
563 if (direction == -1) {
564 /* other causes */
565 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
566 index = ((queue & 1) * 8);
567 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC);
568 ivar &= ~(0xFF << index);
569 ivar |= (msix_vector << index);
570 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar);
571 break;
572 } else {
573 /* tx or rx causes */
574 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
575 index = ((16 * (queue & 1)) + (8 * direction));
576 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1));
577 ivar &= ~(0xFF << index);
578 ivar |= (msix_vector << index);
579 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar);
580 break;
581 }
582 default:
583 break;
584 }
9a799d71
AK		 585}
586
fe49f04a 587static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter,
e8e9f696 588 u64 qmask)
fe49f04a
AD		 589{
590 u32 mask;
591
592 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
593 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
594 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask);
595 } else {
596 mask = (qmask & 0xFFFFFFFF);
597 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask);
598 mask = (qmask >> 32);
599 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask);
600 }
601}
602
84418e3b 603void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter,
e8e9f696
JP		 604 struct ixgbe_tx_buffer
605 *tx_buffer_info)
9a799d71 606{
e5a43549
AD		 607 if (tx_buffer_info->dma) {
608 if (tx_buffer_info->mapped_as_page)
1b507730 609 dma_unmap_page(&adapter->pdev->dev,
e5a43549
AD		 610 tx_buffer_info->dma,
611 tx_buffer_info->length,
1b507730 612 DMA_TO_DEVICE);
e5a43549 613 else
1b507730 614 dma_unmap_single(&adapter->pdev->dev,
e5a43549
AD		 615 tx_buffer_info->dma,
616 tx_buffer_info->length,
1b507730 617 DMA_TO_DEVICE);
e5a43549
AD		 618 tx_buffer_info->dma = 0;
619 }
9a799d71
AK		 620 if (tx_buffer_info->skb) {
621 dev_kfree_skb_any(tx_buffer_info->skb);
622 tx_buffer_info->skb = NULL;
623 }
44df32c5 624 tx_buffer_info->time_stamp = 0;
9a799d71
AK		 625 /* tx_buffer_info must be completely set up in the transmit path */
626}
627
26f23d82 628/**
7483d9dd 629 * ixgbe_tx_xon_state - check the tx ring xon state
26f23d82
YZ		 630 * @adapter: the ixgbe adapter
631 * @tx_ring: the corresponding tx_ring
632 *
633 * If not in DCB mode, checks TFCS.TXOFF, otherwise, find out the
634 * corresponding TC of this tx_ring when checking TFCS.
635 *
7483d9dd 636 * Returns : true if in xon state (currently not paused)
26f23d82 637 */
7483d9dd 638static inline bool ixgbe_tx_xon_state(struct ixgbe_adapter *adapter,
e8e9f696 639 struct ixgbe_ring *tx_ring)
26f23d82 640{
26f23d82
YZ		 641 u32 txoff = IXGBE_TFCS_TXOFF;
642
643#ifdef CONFIG_IXGBE_DCB
ca739481 644 if (adapter->dcb_cfg.pfc_mode_enable) {
30b76832 645 int tc;
26f23d82
YZ		 646 int reg_idx = tx_ring->reg_idx;
647 int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
648
6837e895
PW		 649 switch (adapter->hw.mac.type) {
650 case ixgbe_mac_82598EB:
26f23d82
YZ		 651 tc = reg_idx >> 2;
652 txoff = IXGBE_TFCS_TXOFF0;
6837e895
PW		 653 break;
654 case ixgbe_mac_82599EB:
26f23d82
YZ		 655 tc = 0;
656 txoff = IXGBE_TFCS_TXOFF;
657 if (dcb_i == 8) {
658 /* TC0, TC1 */
659 tc = reg_idx >> 5;
660 if (tc == 2) /* TC2, TC3 */
661 tc += (reg_idx - 64) >> 4;
662 else if (tc == 3) /* TC4, TC5, TC6, TC7 */
663 tc += 1 + ((reg_idx - 96) >> 3);
664 } else if (dcb_i == 4) {
665 /* TC0, TC1 */
666 tc = reg_idx >> 6;
667 if (tc == 1) {
668 tc += (reg_idx - 64) >> 5;
669 if (tc == 2) /* TC2, TC3 */
670 tc += (reg_idx - 96) >> 4;
671 }
672 }
6837e895
PW		 673 break;
674 default:
675 tc = 0;
26f23d82
YZ		 676 }
677 txoff <<= tc;
678 }
679#endif
680 return IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & txoff;
681}
682
9a799d71 683static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter,
e8e9f696
JP		 684 struct ixgbe_ring *tx_ring,
685 unsigned int eop)
9a799d71 686{
e01c31a5 687 struct ixgbe_hw *hw = &adapter->hw;
e01c31a5 688
9a799d71 689 /* Detect a transmit hang in hardware, this serializes the
e01c31a5 690 * check with the clearing of time_stamp and movement of eop */
9a799d71 691 adapter->detect_tx_hung = false;
44df32c5 692 if (tx_ring->tx_buffer_info[eop].time_stamp &&
9a799d71 693 time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) &&
7483d9dd 694 ixgbe_tx_xon_state(adapter, tx_ring)) {
9a799d71 695 /* detected Tx unit hang */
e01c31a5 696 union ixgbe_adv_tx_desc *tx_desc;
31f05a2d 697 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
396e799c 698 e_err(drv, "Detected Tx Unit Hang\n"
849c4542
ET		 699 " Tx Queue <%d>\n"
700 " TDH, TDT <%x>, <%x>\n"
701 " next_to_use <%x>\n"
702 " next_to_clean <%x>\n"
703 "tx_buffer_info[next_to_clean]\n"
704 " time_stamp <%lx>\n"
705 " jiffies <%lx>\n",
706 tx_ring->queue_index,
84ea2591
AD		 707 IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)),
708 IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)),
849c4542
ET		 709 tx_ring->next_to_use, eop,
710 tx_ring->tx_buffer_info[eop].time_stamp, jiffies);
9a799d71
AK		 711 return true;
712 }
713
714 return false;
715}
716
b4617240
PW		 717#define IXGBE_MAX_TXD_PWR 14
718#define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
e092be60
AV		 719
720/* Tx Descriptors needed, worst case */
721#define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
722 (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
723#define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
b4617240 724 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
e092be60 725
e01c31a5
JB		 726static void ixgbe_tx_timeout(struct net_device *netdev);
727
9a799d71
AK		 728/**
729 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
fe49f04a 730 * @q_vector: structure containing interrupt and ring information
e01c31a5 731 * @tx_ring: tx ring to clean
9a799d71 732 **/
fe49f04a 733static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
e8e9f696 734 struct ixgbe_ring *tx_ring)
9a799d71 735{
fe49f04a 736 struct ixgbe_adapter *adapter = q_vector->adapter;
e01c31a5 737 struct net_device *netdev = adapter->netdev;
12207e49
PWJ		 738 union ixgbe_adv_tx_desc *tx_desc, *eop_desc;
739 struct ixgbe_tx_buffer *tx_buffer_info;
740 unsigned int i, eop, count = 0;
e01c31a5 741 unsigned int total_bytes = 0, total_packets = 0;
9a799d71
AK		 742
743 i = tx_ring->next_to_clean;
12207e49 744 eop = tx_ring->tx_buffer_info[i].next_to_watch;
31f05a2d 745 eop_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
12207e49
PWJ		 746
747 while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) &&
9a1a69ad 748 (count < tx_ring->work_limit)) {
12207e49 749 bool cleaned = false;
2d0bb1c1 750 rmb(); /* read buffer_info after eop_desc */
12207e49 751 for ( ; !cleaned; count++) {
31f05a2d 752 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
9a799d71 753 tx_buffer_info = &tx_ring->tx_buffer_info[i];
8ad494b0
AD		 754
755 tx_desc->wb.status = 0;
12207e49 756 cleaned = (i == eop);
9a799d71 757
8ad494b0
AD		 758 i++;
759 if (i == tx_ring->count)
760 i = 0;
e01c31a5 761
8ad494b0
AD		 762 if (cleaned && tx_buffer_info->skb) {
763 total_bytes += tx_buffer_info->bytecount;
764 total_packets += tx_buffer_info->gso_segs;
e092be60 765 }
e01c31a5 766
9a799d71 767 ixgbe_unmap_and_free_tx_resource(adapter,
e8e9f696 768 tx_buffer_info);
e01c31a5 769 }
12207e49
PWJ		 770
771 eop = tx_ring->tx_buffer_info[i].next_to_watch;
31f05a2d 772 eop_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
12207e49
PWJ		 773 }
774
9a799d71
AK		 775 tx_ring->next_to_clean = i;
776
e092be60 777#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
e01c31a5 778 if (unlikely(count && netif_carrier_ok(netdev) &&
e8e9f696 779 (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
e092be60
AV		 780 /* Make sure that anybody stopping the queue after this
781 * sees the new next_to_clean.
782 */
783 smp_mb();
30eba97a
AV		 784 if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) &&
785 !test_bit(__IXGBE_DOWN, &adapter->state)) {
786 netif_wake_subqueue(netdev, tx_ring->queue_index);
7ca3bc58 787 ++tx_ring->restart_queue;
30eba97a 788 }
e092be60 789 }
9a799d71 790
e01c31a5
JB		 791 if (adapter->detect_tx_hung) {
792 if (ixgbe_check_tx_hang(adapter, tx_ring, i)) {
793 /* schedule immediate reset if we believe we hung */
396e799c
ET		 794 e_info(probe, "tx hang %d detected, resetting "
795 "adapter\n", adapter->tx_timeout_count + 1);
e01c31a5
JB		 796 ixgbe_tx_timeout(adapter->netdev);
797 }
798 }
9a799d71 799
e01c31a5 800 /* re-arm the interrupt */
fe49f04a
AD		 801 if (count >= tx_ring->work_limit)
802 ixgbe_irq_rearm_queues(adapter, ((u64)1 << q_vector->v_idx));
9a799d71 803
e01c31a5
JB		 804 tx_ring->total_bytes += total_bytes;
805 tx_ring->total_packets += total_packets;
de1036b1 806 u64_stats_update_begin(&tx_ring->syncp);
e01c31a5 807 tx_ring->stats.packets += total_packets;
12207e49 808 tx_ring->stats.bytes += total_bytes;
de1036b1 809 u64_stats_update_end(&tx_ring->syncp);
807540ba 810 return count < tx_ring->work_limit;
9a799d71
AK		 811}
812
5dd2d332 813#ifdef CONFIG_IXGBE_DCA
bd0362dd 814static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter,
e8e9f696 815 struct ixgbe_ring *rx_ring)
bd0362dd
JC		 816{
817 u32 rxctrl;
818 int cpu = get_cpu();
4a0b9ca0 819 int q = rx_ring->reg_idx;
bd0362dd 820
3a581073 821 if (rx_ring->cpu != cpu) {
bd0362dd 822 rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q));
e8e26350
PW		 823 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
824 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK;
825 rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
826 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
827 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK_82599;
828 rxctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
e8e9f696 829 IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599);
e8e26350 830 }
bd0362dd
JC		 831 rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN;
832 rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN;
15005a32
DS		 833 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN);
834 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_WRO_EN |
e8e9f696 835 IXGBE_DCA_RXCTRL_DESC_HSRO_EN);
bd0362dd 836 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q), rxctrl);
3a581073 837 rx_ring->cpu = cpu;
bd0362dd
JC		 838 }
839 put_cpu();
840}
841
842static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
e8e9f696 843 struct ixgbe_ring *tx_ring)
bd0362dd
JC		 844{
845 u32 txctrl;
846 int cpu = get_cpu();
4a0b9ca0 847 int q = tx_ring->reg_idx;
ee5f784a 848 struct ixgbe_hw *hw = &adapter->hw;
bd0362dd 849
3a581073 850 if (tx_ring->cpu != cpu) {
e8e26350 851 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
ee5f784a 852 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(q));
e8e26350
PW		 853 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK;
854 txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
ee5f784a
DS		 855 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
856 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(q), txctrl);
e8e26350 857 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
ee5f784a 858 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(q));
e8e26350
PW		 859 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599;
860 txctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
e8e9f696 861 IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599);
ee5f784a
DS		 862 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
863 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(q), txctrl);
e8e26350 864 }
3a581073 865 tx_ring->cpu = cpu;
bd0362dd
JC		 866 }
867 put_cpu();
868}
869
870static void ixgbe_setup_dca(struct ixgbe_adapter *adapter)
871{
872 int i;
873
874 if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED))
875 return;
876
e35ec126
AD		 877 /* always use CB2 mode, difference is masked in the CB driver */
878 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2);
879
bd0362dd 880 for (i = 0; i < adapter->num_tx_queues; i++) {
4a0b9ca0
PW		 881 adapter->tx_ring[i]->cpu = -1;
882 ixgbe_update_tx_dca(adapter, adapter->tx_ring[i]);
bd0362dd
JC		 883 }
884 for (i = 0; i < adapter->num_rx_queues; i++) {
4a0b9ca0
PW		 885 adapter->rx_ring[i]->cpu = -1;
886 ixgbe_update_rx_dca(adapter, adapter->rx_ring[i]);
bd0362dd
JC		 887 }
888}
889
890static int __ixgbe_notify_dca(struct device *dev, void *data)
891{
892 struct net_device *netdev = dev_get_drvdata(dev);
893 struct ixgbe_adapter *adapter = netdev_priv(netdev);
894 unsigned long event = *(unsigned long *)data;
895
896 switch (event) {
897 case DCA_PROVIDER_ADD:
96b0e0f6
JB		 898 /* if we're already enabled, don't do it again */
899 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
900 break;
652f093f 901 if (dca_add_requester(dev) == 0) {
96b0e0f6 902 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
bd0362dd
JC		 903 ixgbe_setup_dca(adapter);
904 break;
905 }
906 /* Fall Through since DCA is disabled. */
907 case DCA_PROVIDER_REMOVE:
908 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
909 dca_remove_requester(dev);
910 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
911 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
912 }
913 break;
914 }
915
652f093f 916 return 0;
bd0362dd
JC		 917}
918
5dd2d332 919#endif /* CONFIG_IXGBE_DCA */
9a799d71
AK		 920/**
921 * ixgbe_receive_skb - Send a completed packet up the stack
922 * @adapter: board private structure
923 * @skb: packet to send up
177db6ff
MC		 924 * @status: hardware indication of status of receive
925 * @rx_ring: rx descriptor ring (for a specific queue) to setup
926 * @rx_desc: rx descriptor
9a799d71 927 **/
78b6f4ce 928static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector,
e8e9f696
JP		 929 struct sk_buff *skb, u8 status,
930 struct ixgbe_ring *ring,
931 union ixgbe_adv_rx_desc *rx_desc)
9a799d71 932{
78b6f4ce
HX		 933 struct ixgbe_adapter *adapter = q_vector->adapter;
934 struct napi_struct *napi = &q_vector->napi;
177db6ff
MC		 935 bool is_vlan = (status & IXGBE_RXD_STAT_VP);
936 u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
9a799d71 937
f62bbb5e
JG		 938 if (is_vlan && (tag & VLAN_VID_MASK))
939 __vlan_hwaccel_put_tag(skb, tag);
940
941 if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL))
942 napi_gro_receive(napi, skb);
943 else
944 netif_rx(skb);
9a799d71
AK		 945}
946
e59bd25d
AV		 947/**
948 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
949 * @adapter: address of board private structure
950 * @status_err: hardware indication of status of receive
951 * @skb: skb currently being received and modified
952 **/
9a799d71 953static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter,
8bae1b2b
DS		 954 union ixgbe_adv_rx_desc *rx_desc,
955 struct sk_buff *skb)
9a799d71 956{
8bae1b2b
DS		 957 u32 status_err = le32_to_cpu(rx_desc->wb.upper.status_error);
958
bc8acf2c 959 skb_checksum_none_assert(skb);
9a799d71 960
712744be
JB		 961 /* Rx csum disabled */
962 if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
9a799d71 963 return;
e59bd25d
AV		 964
965 /* if IP and error */
966 if ((status_err & IXGBE_RXD_STAT_IPCS) &&
967 (status_err & IXGBE_RXDADV_ERR_IPE)) {
9a799d71
AK		 968 adapter->hw_csum_rx_error++;
969 return;
970 }
e59bd25d
AV		 971
972 if (!(status_err & IXGBE_RXD_STAT_L4CS))
973 return;
974
975 if (status_err & IXGBE_RXDADV_ERR_TCPE) {
8bae1b2b
DS		 976 u16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
977
978 /*
979 * 82599 errata, UDP frames with a 0 checksum can be marked as
980 * checksum errors.
981 */
982 if ((pkt_info & IXGBE_RXDADV_PKTTYPE_UDP) &&
983 (adapter->hw.mac.type == ixgbe_mac_82599EB))
984 return;
985
e59bd25d
AV		 986 adapter->hw_csum_rx_error++;
987 return;
988 }
989
9a799d71 990 /* It must be a TCP or UDP packet with a valid checksum */
e59bd25d 991 skb->ip_summed = CHECKSUM_UNNECESSARY;
9a799d71
AK		 992}
993
84ea2591 994static inline void ixgbe_release_rx_desc(struct ixgbe_ring *rx_ring, u32 val)
e8e26350
PW		 995{
996 /*
997 * Force memory writes to complete before letting h/w
998 * know there are new descriptors to fetch. (Only
999 * applicable for weak-ordered memory model archs,
1000 * such as IA-64).
1001 */
1002 wmb();
84ea2591 1003 writel(val, rx_ring->tail);
e8e26350
PW		 1004}
1005
9a799d71
AK		 1006/**
1007 * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split
1008 * @adapter: address of board private structure
1009 **/
84418e3b 1010void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter,
e8e9f696 1011 struct ixgbe_ring *rx_ring,
d5f398ed 1012 u16 cleaned_count)
9a799d71 1013{
9a799d71
AK		 1014 struct pci_dev *pdev = adapter->pdev;
1015 union ixgbe_adv_rx_desc *rx_desc;
3a581073 1016 struct ixgbe_rx_buffer *bi;
d5f398ed
AD		 1017 struct sk_buff *skb;
1018 u16 i = rx_ring->next_to_use;
9a799d71
AK		 1019
1020 while (cleaned_count--) {
31f05a2d 1021 rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
d5f398ed
AD		 1022 bi = &rx_ring->rx_buffer_info[i];
1023 skb = bi->skb;
9a799d71 1024
d5f398ed
AD		 1025 if (!skb) {
1026 skb = netdev_alloc_skb_ip_align(adapter->netdev,
1027 rx_ring->rx_buf_len);
9a799d71
AK		 1028 if (!skb) {
1029 adapter->alloc_rx_buff_failed++;
1030 goto no_buffers;
1031 }
d716a7d8
AD		 1032 /* initialize queue mapping */
1033 skb_record_rx_queue(skb, rx_ring->queue_index);
d5f398ed 1034 bi->skb = skb;
d716a7d8 1035 }
9a799d71 1036
d716a7d8
AD		 1037 if (!bi->dma) {
1038 bi->dma = dma_map_single(&pdev->dev,
d5f398ed 1039 skb->data,
e8e9f696 1040 rx_ring->rx_buf_len,
1b507730 1041 DMA_FROM_DEVICE);
d5f398ed
AD		 1042 if (dma_mapping_error(&pdev->dev, bi->dma)) {
1043 adapter->alloc_rx_buff_failed++;
1044 bi->dma = 0;
1045 goto no_buffers;
1046 }
9a799d71 1047 }
d5f398ed 1048
6e455b89 1049 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
d5f398ed
AD		 1050 if (!bi->page) {
1051 bi->page = netdev_alloc_page(adapter->netdev);
1052 if (!bi->page) {
1053 adapter->alloc_rx_page_failed++;
1054 goto no_buffers;
1055 }
1056 }
1057
1058 if (!bi->page_dma) {
1059 /* use a half page if we're re-using */
1060 bi->page_offset ^= PAGE_SIZE / 2;
1061 bi->page_dma = dma_map_page(&pdev->dev,
1062 bi->page,
1063 bi->page_offset,
1064 PAGE_SIZE / 2,
1065 DMA_FROM_DEVICE);
1066 if (dma_mapping_error(&pdev->dev,
1067 bi->page_dma)) {
1068 adapter->alloc_rx_page_failed++;
1069 bi->page_dma = 0;
1070 goto no_buffers;
1071 }
1072 }
1073
1074 /* Refresh the desc even if buffer_addrs didn't change
1075 * because each write-back erases this info. */
3a581073
JB		 1076 rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
1077 rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
9a799d71 1078 } else {
3a581073 1079 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
84418e3b 1080 rx_desc->read.hdr_addr = 0;
9a799d71
AK		 1081 }
1082
1083 i++;
1084 if (i == rx_ring->count)
1085 i = 0;
9a799d71 1086 }
7c6e0a43 1087
9a799d71
AK		 1088no_buffers:
1089 if (rx_ring->next_to_use != i) {
1090 rx_ring->next_to_use = i;
84ea2591 1091 ixgbe_release_rx_desc(rx_ring, i);
9a799d71
AK		 1092 }
1093}
1094
7c6e0a43
JB		 1095static inline u16 ixgbe_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc)
1096{
1097 return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info;
1098}
1099
1100static inline u16 ixgbe_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc)
1101{
1102 return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
1103}
1104
f8212f97
AD		 1105static inline u32 ixgbe_get_rsc_count(union ixgbe_adv_rx_desc *rx_desc)
1106{
1107 return (le32_to_cpu(rx_desc->wb.lower.lo_dword.data) &
e8e9f696
JP		 1108 IXGBE_RXDADV_RSCCNT_MASK) >>
1109 IXGBE_RXDADV_RSCCNT_SHIFT;
f8212f97
AD		 1110}
1111
1112/**
1113 * ixgbe_transform_rsc_queue - change rsc queue into a full packet
1114 * @skb: pointer to the last skb in the rsc queue
94b982b2 1115 * @count: pointer to number of packets coalesced in this context
f8212f97
AD		 1116 *
1117 * This function changes a queue full of hw rsc buffers into a completed
1118 * packet. It uses the ->prev pointers to find the first packet and then
1119 * turns it into the frag list owner.
1120 **/
94b982b2 1121static inline struct sk_buff *ixgbe_transform_rsc_queue(struct sk_buff *skb,
e8e9f696 1122 u64 *count)
f8212f97
AD		 1123{
1124 unsigned int frag_list_size = 0;
1125
1126 while (skb->prev) {
1127 struct sk_buff *prev = skb->prev;
1128 frag_list_size += skb->len;
1129 skb->prev = NULL;
1130 skb = prev;
94b982b2 1131 *count += 1;
f8212f97
AD		 1132 }
1133
1134 skb_shinfo(skb)->frag_list = skb->next;
1135 skb->next = NULL;
1136 skb->len += frag_list_size;
1137 skb->data_len += frag_list_size;
1138 skb->truesize += frag_list_size;
1139 return skb;
1140}
1141
43634e82
MC		 1142struct ixgbe_rsc_cb {
1143 dma_addr_t dma;
e8171aaa 1144 bool delay_unmap;
43634e82
MC		 1145};
1146
1147#define IXGBE_RSC_CB(skb) ((struct ixgbe_rsc_cb *)(skb)->cb)
1148
78b6f4ce 1149static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
e8e9f696
JP		 1150 struct ixgbe_ring *rx_ring,
1151 int *work_done, int work_to_do)
9a799d71 1152{
78b6f4ce 1153 struct ixgbe_adapter *adapter = q_vector->adapter;
9a799d71
AK		 1154 struct pci_dev *pdev = adapter->pdev;
1155 union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
1156 struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer;
1157 struct sk_buff *skb;
f8212f97 1158 unsigned int i, rsc_count = 0;
7c6e0a43 1159 u32 len, staterr;
177db6ff
MC		 1160 u16 hdr_info;
1161 bool cleaned = false;
9a799d71 1162 int cleaned_count = 0;
d2f4fbe2 1163 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
3d8fd385
YZ		 1164#ifdef IXGBE_FCOE
1165 int ddp_bytes = 0;
1166#endif /* IXGBE_FCOE */
9a799d71
AK		 1167
1168 i = rx_ring->next_to_clean;
31f05a2d 1169 rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
9a799d71
AK		 1170 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
1171 rx_buffer_info = &rx_ring->rx_buffer_info[i];
9a799d71
AK		 1172
1173 while (staterr & IXGBE_RXD_STAT_DD) {
7c6e0a43 1174 u32 upper_len = 0;
9a799d71
AK		 1175 if (*work_done >= work_to_do)
1176 break;
1177 (*work_done)++;
1178
3c945e5b 1179 rmb(); /* read descriptor and rx_buffer_info after status DD */
6e455b89 1180 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
7c6e0a43
JB		 1181 hdr_info = le16_to_cpu(ixgbe_get_hdr_info(rx_desc));
1182 len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
762f4c57 1183 IXGBE_RXDADV_HDRBUFLEN_SHIFT;
9a799d71 1184 upper_len = le16_to_cpu(rx_desc->wb.upper.length);
0b746e08
SN		 1185 if ((len > IXGBE_RX_HDR_SIZE) ||
1186 (upper_len && !(hdr_info & IXGBE_RXDADV_SPH)))
1187 len = IXGBE_RX_HDR_SIZE;
7c6e0a43 1188 } else {
9a799d71 1189 len = le16_to_cpu(rx_desc->wb.upper.length);
7c6e0a43 1190 }
9a799d71
AK		 1191
1192 cleaned = true;
1193 skb = rx_buffer_info->skb;
7ca3bc58 1194 prefetch(skb->data);
9a799d71
AK		 1195 rx_buffer_info->skb = NULL;
1196
21fa4e66 1197 if (rx_buffer_info->dma) {
43634e82
MC		 1198 if ((adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
1199 (!(staterr & IXGBE_RXD_STAT_EOP)) &&
e8171aaa 1200 (!(skb->prev))) {
43634e82
MC		 1201 /*
1202 * When HWRSC is enabled, delay unmapping
1203 * of the first packet. It carries the
1204 * header information, HW may still
1205 * access the header after the writeback.
1206 * Only unmap it when EOP is reached
1207 */
e8171aaa 1208 IXGBE_RSC_CB(skb)->delay_unmap = true;
43634e82 1209 IXGBE_RSC_CB(skb)->dma = rx_buffer_info->dma;
e8171aaa 1210 } else {
1b507730 1211 dma_unmap_single(&pdev->dev,
e8e9f696
JP		 1212 rx_buffer_info->dma,
1213 rx_ring->rx_buf_len,
1214 DMA_FROM_DEVICE);
e8171aaa 1215 }
4f57ca6e 1216 rx_buffer_info->dma = 0;
9a799d71
AK		 1217 skb_put(skb, len);
1218 }
1219
1220 if (upper_len) {
1b507730
NN		 1221 dma_unmap_page(&pdev->dev, rx_buffer_info->page_dma,
1222 PAGE_SIZE / 2, DMA_FROM_DEVICE);
9a799d71
AK		 1223 rx_buffer_info->page_dma = 0;
1224 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
e8e9f696
JP		 1225 rx_buffer_info->page,
1226 rx_buffer_info->page_offset,
1227 upper_len);
762f4c57
JB		 1228
1229 if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) ||
1230 (page_count(rx_buffer_info->page) != 1))
1231 rx_buffer_info->page = NULL;
1232 else
1233 get_page(rx_buffer_info->page);
9a799d71
AK		 1234
1235 skb->len += upper_len;
1236 skb->data_len += upper_len;
1237 skb->truesize += upper_len;
1238 }
1239
1240 i++;
1241 if (i == rx_ring->count)
1242 i = 0;
9a799d71 1243
31f05a2d 1244 next_rxd = IXGBE_RX_DESC_ADV(rx_ring, i);
9a799d71 1245 prefetch(next_rxd);
9a799d71 1246 cleaned_count++;
f8212f97 1247
0c19d6af 1248 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)
f8212f97
AD		 1249 rsc_count = ixgbe_get_rsc_count(rx_desc);
1250
1251 if (rsc_count) {
1252 u32 nextp = (staterr & IXGBE_RXDADV_NEXTP_MASK) >>
1253 IXGBE_RXDADV_NEXTP_SHIFT;
1254 next_buffer = &rx_ring->rx_buffer_info[nextp];
f8212f97
AD		 1255 } else {
1256 next_buffer = &rx_ring->rx_buffer_info[i];
1257 }
1258
9a799d71 1259 if (staterr & IXGBE_RXD_STAT_EOP) {
f8212f97 1260 if (skb->prev)
e8e9f696
JP		 1261 skb = ixgbe_transform_rsc_queue(skb,
1262 &(rx_ring->rsc_count));
94b982b2 1263 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
e8171aaa 1264 if (IXGBE_RSC_CB(skb)->delay_unmap) {
1b507730
NN		 1265 dma_unmap_single(&pdev->dev,
1266 IXGBE_RSC_CB(skb)->dma,
e8e9f696 1267 rx_ring->rx_buf_len,
1b507730 1268 DMA_FROM_DEVICE);
fd3686a8 1269 IXGBE_RSC_CB(skb)->dma = 0;
e8171aaa 1270 IXGBE_RSC_CB(skb)->delay_unmap = false;
fd3686a8 1271 }
94b982b2 1272 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED)
e8e9f696
JP		 1273 rx_ring->rsc_count +=
1274 skb_shinfo(skb)->nr_frags;
94b982b2
MC		 1275 else
1276 rx_ring->rsc_count++;
1277 rx_ring->rsc_flush++;
1278 }
de1036b1 1279 u64_stats_update_begin(&rx_ring->syncp);
9a799d71
AK		 1280 rx_ring->stats.packets++;
1281 rx_ring->stats.bytes += skb->len;
de1036b1 1282 u64_stats_update_end(&rx_ring->syncp);
9a799d71 1283 } else {
6e455b89 1284 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
f8212f97
AD		 1285 rx_buffer_info->skb = next_buffer->skb;
1286 rx_buffer_info->dma = next_buffer->dma;
1287 next_buffer->skb = skb;
1288 next_buffer->dma = 0;
1289 } else {
1290 skb->next = next_buffer->skb;
1291 skb->next->prev = skb;
1292 }
7ca3bc58 1293 rx_ring->non_eop_descs++;
9a799d71
AK		 1294 goto next_desc;
1295 }
1296
1297 if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) {
1298 dev_kfree_skb_irq(skb);
1299 goto next_desc;
1300 }
1301
8bae1b2b 1302 ixgbe_rx_checksum(adapter, rx_desc, skb);
d2f4fbe2
AV		 1303
1304 /* probably a little skewed due to removing CRC */
1305 total_rx_bytes += skb->len;
1306 total_rx_packets++;
1307
74ce8dd2 1308 skb->protocol = eth_type_trans(skb, adapter->netdev);
332d4a7d
YZ		 1309#ifdef IXGBE_FCOE
1310 /* if ddp, not passing to ULD unless for FCP_RSP or error */
3d8fd385
YZ		 1311 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
1312 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb);
1313 if (!ddp_bytes)
332d4a7d 1314 goto next_desc;
3d8fd385 1315 }
332d4a7d 1316#endif /* IXGBE_FCOE */
fdaff1ce 1317 ixgbe_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
9a799d71
AK		 1318
1319next_desc:
1320 rx_desc->wb.upper.status_error = 0;
1321
1322 /* return some buffers to hardware, one at a time is too slow */
1323 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) {
1324 ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
1325 cleaned_count = 0;
1326 }
1327
1328 /* use prefetched values */
1329 rx_desc = next_rxd;
f8212f97 1330 rx_buffer_info = &rx_ring->rx_buffer_info[i];
9a799d71
AK		 1331
1332 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
177db6ff
MC		 1333 }
1334
9a799d71
AK		 1335 rx_ring->next_to_clean = i;
1336 cleaned_count = IXGBE_DESC_UNUSED(rx_ring);
1337
1338 if (cleaned_count)
1339 ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
1340
3d8fd385
YZ		 1341#ifdef IXGBE_FCOE
1342 /* include DDPed FCoE data */
1343 if (ddp_bytes > 0) {
1344 unsigned int mss;
1345
1346 mss = adapter->netdev->mtu - sizeof(struct fcoe_hdr) -
1347 sizeof(struct fc_frame_header) -
1348 sizeof(struct fcoe_crc_eof);
1349 if (mss > 512)
1350 mss &= ~511;
1351 total_rx_bytes += ddp_bytes;
1352 total_rx_packets += DIV_ROUND_UP(ddp_bytes, mss);
1353 }
1354#endif /* IXGBE_FCOE */
1355
f494e8fa
AV		 1356 rx_ring->total_packets += total_rx_packets;
1357 rx_ring->total_bytes += total_rx_bytes;
f494e8fa 1358
9a799d71
AK		 1359 return cleaned;
1360}
1361
021230d4 1362static int ixgbe_clean_rxonly(struct napi_struct *, int);
9a799d71
AK		 1363/**
1364 * ixgbe_configure_msix - Configure MSI-X hardware
1365 * @adapter: board private structure
1366 *
1367 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
1368 * interrupts.
1369 **/
1370static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
1371{
021230d4
AV		 1372 struct ixgbe_q_vector *q_vector;
1373 int i, j, q_vectors, v_idx, r_idx;
1374 u32 mask;
9a799d71 1375
021230d4 1376 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
9a799d71 1377
4df10466
JB		 1378 /*
1379 * Populate the IVAR table and set the ITR values to the
021230d4
AV		 1380 * corresponding register.
1381 */
1382 for (v_idx = 0; v_idx < q_vectors; v_idx++) {
7a921c93 1383 q_vector = adapter->q_vector[v_idx];
984b3f57 1384 /* XXX for_each_set_bit(...) */
021230d4 1385 r_idx = find_first_bit(q_vector->rxr_idx,
e8e9f696 1386 adapter->num_rx_queues);
021230d4
AV		 1387
1388 for (i = 0; i < q_vector->rxr_count; i++) {
4a0b9ca0 1389 j = adapter->rx_ring[r_idx]->reg_idx;
e8e26350 1390 ixgbe_set_ivar(adapter, 0, j, v_idx);
021230d4 1391 r_idx = find_next_bit(q_vector->rxr_idx,
e8e9f696
JP		 1392 adapter->num_rx_queues,
1393 r_idx + 1);
021230d4
AV		 1394 }
1395 r_idx = find_first_bit(q_vector->txr_idx,
e8e9f696 1396 adapter->num_tx_queues);
021230d4
AV		 1397
1398 for (i = 0; i < q_vector->txr_count; i++) {
4a0b9ca0 1399 j = adapter->tx_ring[r_idx]->reg_idx;
e8e26350 1400 ixgbe_set_ivar(adapter, 1, j, v_idx);
021230d4 1401 r_idx = find_next_bit(q_vector->txr_idx,
e8e9f696
JP		 1402 adapter->num_tx_queues,
1403 r_idx + 1);
021230d4
AV		 1404 }
1405
021230d4 1406 if (q_vector->txr_count && !q_vector->rxr_count)
f7554a2b
NS		 1407 /* tx only */
1408 q_vector->eitr = adapter->tx_eitr_param;
509ee935 1409 else if (q_vector->rxr_count)
f7554a2b
NS		 1410 /* rx or mixed */
1411 q_vector->eitr = adapter->rx_eitr_param;
021230d4 1412
fe49f04a 1413 ixgbe_write_eitr(q_vector);
b25ebfd2
PW		 1414 /* If Flow Director is enabled, set interrupt affinity */
1415 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
1416 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) {
1417 /*
1418 * Allocate the affinity_hint cpumask, assign the mask
1419 * for this vector, and set our affinity_hint for
1420 * this irq.
1421 */
1422 if (!alloc_cpumask_var(&q_vector->affinity_mask,
1423 GFP_KERNEL))
1424 return;
1425 cpumask_set_cpu(v_idx, q_vector->affinity_mask);
1426 irq_set_affinity_hint(adapter->msix_entries[v_idx].vector,
1427 q_vector->affinity_mask);
1428 }
9a799d71
AK		 1429 }
1430
e8e26350
PW		 1431 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
1432 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX,
e8e9f696 1433 v_idx);
e8e26350
PW		 1434 else if (adapter->hw.mac.type == ixgbe_mac_82599EB)
1435 ixgbe_set_ivar(adapter, -1, 1, v_idx);
021230d4
AV		 1436 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
1437
41fb9248 1438 /* set up to autoclear timer, and the vectors */
021230d4 1439 mask = IXGBE_EIMS_ENABLE_MASK;
1cdd1ec8
GR		 1440 if (adapter->num_vfs)
1441 mask &= ~(IXGBE_EIMS_OTHER |
1442 IXGBE_EIMS_MAILBOX |
1443 IXGBE_EIMS_LSC);
1444 else
1445 mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC);
021230d4 1446 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask);
9a799d71
AK		 1447}
1448
f494e8fa
AV		 1449enum latency_range {
1450 lowest_latency = 0,
1451 low_latency = 1,
1452 bulk_latency = 2,
1453 latency_invalid = 255
1454};
1455
1456/**
1457 * ixgbe_update_itr - update the dynamic ITR value based on statistics
1458 * @adapter: pointer to adapter
1459 * @eitr: eitr setting (ints per sec) to give last timeslice
1460 * @itr_setting: current throttle rate in ints/second
1461 * @packets: the number of packets during this measurement interval
1462 * @bytes: the number of bytes during this measurement interval
1463 *
1464 * Stores a new ITR value based on packets and byte
1465 * counts during the last interrupt. The advantage of per interrupt
1466 * computation is faster updates and more accurate ITR for the current
1467 * traffic pattern. Constants in this function were computed
1468 * based on theoretical maximum wire speed and thresholds were set based
1469 * on testing data as well as attempting to minimize response time
1470 * while increasing bulk throughput.
1471 * this functionality is controlled by the InterruptThrottleRate module
1472 * parameter (see ixgbe_param.c)
1473 **/
1474static u8 ixgbe_update_itr(struct ixgbe_adapter *adapter,
e8e9f696
JP		 1475 u32 eitr, u8 itr_setting,
1476 int packets, int bytes)
f494e8fa
AV		 1477{
1478 unsigned int retval = itr_setting;
1479 u32 timepassed_us;
1480 u64 bytes_perint;
1481
1482 if (packets == 0)
1483 goto update_itr_done;
1484
1485
1486 /* simple throttlerate management
1487 * 0-20MB/s lowest (100000 ints/s)
1488 * 20-100MB/s low (20000 ints/s)
1489 * 100-1249MB/s bulk (8000 ints/s)
1490 */
1491 /* what was last interrupt timeslice? */
1492 timepassed_us = 1000000/eitr;
1493 bytes_perint = bytes / timepassed_us; /* bytes/usec */
1494
1495 switch (itr_setting) {
1496 case lowest_latency:
1497 if (bytes_perint > adapter->eitr_low)
1498 retval = low_latency;
1499 break;
1500 case low_latency:
1501 if (bytes_perint > adapter->eitr_high)
1502 retval = bulk_latency;
1503 else if (bytes_perint <= adapter->eitr_low)
1504 retval = lowest_latency;
1505 break;
1506 case bulk_latency:
1507 if (bytes_perint <= adapter->eitr_high)
1508 retval = low_latency;
1509 break;
1510 }
1511
1512update_itr_done:
1513 return retval;
1514}
1515
509ee935
JB		 1516/**
1517 * ixgbe_write_eitr - write EITR register in hardware specific way
fe49f04a 1518 * @q_vector: structure containing interrupt and ring information
509ee935
JB		 1519 *
1520 * This function is made to be called by ethtool and by the driver
1521 * when it needs to update EITR registers at runtime. Hardware
1522 * specific quirks/differences are taken care of here.
1523 */
fe49f04a 1524void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector)
509ee935 1525{
fe49f04a 1526 struct ixgbe_adapter *adapter = q_vector->adapter;
509ee935 1527 struct ixgbe_hw *hw = &adapter->hw;
fe49f04a
AD		 1528 int v_idx = q_vector->v_idx;
1529 u32 itr_reg = EITR_INTS_PER_SEC_TO_REG(q_vector->eitr);
1530
509ee935
JB		 1531 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1532 /* must write high and low 16 bits to reset counter */
1533 itr_reg |= (itr_reg << 16);
1534 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
f8d1dcaf
JB		 1535 /*
1536 * 82599 can support a value of zero, so allow it for
1537 * max interrupt rate, but there is an errata where it can
1538 * not be zero with RSC
1539 */
1540 if (itr_reg == 8 &&
1541 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
1542 itr_reg = 0;
1543
509ee935
JB		 1544 /*
1545 * set the WDIS bit to not clear the timer bits and cause an
1546 * immediate assertion of the interrupt
1547 */
1548 itr_reg |= IXGBE_EITR_CNT_WDIS;
1549 }
1550 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg);
1551}
1552
f494e8fa
AV		 1553static void ixgbe_set_itr_msix(struct ixgbe_q_vector *q_vector)
1554{
1555 struct ixgbe_adapter *adapter = q_vector->adapter;
f494e8fa
AV		 1556 u32 new_itr;
1557 u8 current_itr, ret_itr;
fe49f04a 1558 int i, r_idx;
f494e8fa
AV		 1559 struct ixgbe_ring *rx_ring, *tx_ring;
1560
1561 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1562 for (i = 0; i < q_vector->txr_count; i++) {
4a0b9ca0 1563 tx_ring = adapter->tx_ring[r_idx];
f494e8fa 1564 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
e8e9f696
JP		 1565 q_vector->tx_itr,
1566 tx_ring->total_packets,
1567 tx_ring->total_bytes);
f494e8fa
AV		 1568 /* if the result for this queue would decrease interrupt
1569 * rate for this vector then use that result */
30efa5a3 1570 q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ?
e8e9f696 1571 q_vector->tx_itr - 1 : ret_itr);
f494e8fa 1572 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
e8e9f696 1573 r_idx + 1);
f494e8fa
AV		 1574 }
1575
1576 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1577 for (i = 0; i < q_vector->rxr_count; i++) {
4a0b9ca0 1578 rx_ring = adapter->rx_ring[r_idx];
f494e8fa 1579 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
e8e9f696
JP		 1580 q_vector->rx_itr,
1581 rx_ring->total_packets,
1582 rx_ring->total_bytes);
f494e8fa
AV		 1583 /* if the result for this queue would decrease interrupt
1584 * rate for this vector then use that result */
30efa5a3 1585 q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ?
e8e9f696 1586 q_vector->rx_itr - 1 : ret_itr);
f494e8fa 1587 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
e8e9f696 1588 r_idx + 1);
f494e8fa
AV		 1589 }
1590
30efa5a3 1591 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
f494e8fa
AV		 1592
1593 switch (current_itr) {
1594 /* counts and packets in update_itr are dependent on these numbers */
1595 case lowest_latency:
1596 new_itr = 100000;
1597 break;
1598 case low_latency:
1599 new_itr = 20000; /* aka hwitr = ~200 */
1600 break;
1601 case bulk_latency:
1602 default:
1603 new_itr = 8000;
1604 break;
1605 }
1606
1607 if (new_itr != q_vector->eitr) {
fe49f04a
AD		 1608 /* do an exponential smoothing */
1609 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
509ee935
JB		 1610
1611 /* save the algorithm value here, not the smoothed one */
1612 q_vector->eitr = new_itr;
fe49f04a
AD		 1613
1614 ixgbe_write_eitr(q_vector);
f494e8fa 1615 }
f494e8fa
AV		 1616}
1617
119fc60a
MC		 1618/**
1619 * ixgbe_check_overtemp_task - worker thread to check over tempurature
1620 * @work: pointer to work_struct containing our data
1621 **/
1622static void ixgbe_check_overtemp_task(struct work_struct *work)
1623{
1624 struct ixgbe_adapter *adapter = container_of(work,
e8e9f696
JP		 1625 struct ixgbe_adapter,
1626 check_overtemp_task);
119fc60a
MC		 1627 struct ixgbe_hw *hw = &adapter->hw;
1628 u32 eicr = adapter->interrupt_event;
1629
7ca647bd
JP		 1630 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE))
1631 return;
1632
1633 switch (hw->device_id) {
1634 case IXGBE_DEV_ID_82599_T3_LOM: {
1635 u32 autoneg;
1636 bool link_up = false;
1637
1638 if (hw->mac.ops.check_link)
1639 hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
1640
1641 if (((eicr & IXGBE_EICR_GPI_SDP0) && (!link_up)) ||
1642 (eicr & IXGBE_EICR_LSC))
1643 /* Check if this is due to overtemp */
1644 if (hw->phy.ops.check_overtemp(hw) == IXGBE_ERR_OVERTEMP)
1645 break;
1646 return;
1647 }
1648 default:
1649 if (!(eicr & IXGBE_EICR_GPI_SDP0))
119fc60a 1650 return;
7ca647bd 1651 break;
119fc60a 1652 }
7ca647bd
JP		 1653 e_crit(drv,
1654 "Network adapter has been stopped because it has over heated. "
1655 "Restart the computer. If the problem persists, "
1656 "power off the system and replace the adapter\n");
1657 /* write to clear the interrupt */
1658 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP0);
119fc60a
MC		 1659}
1660
0befdb3e
JB		 1661static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
1662{
1663 struct ixgbe_hw *hw = &adapter->hw;
1664
1665 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) &&
1666 (eicr & IXGBE_EICR_GPI_SDP1)) {
396e799c 1667 e_crit(probe, "Fan has stopped, replace the adapter\n");
0befdb3e
JB		 1668 /* write to clear the interrupt */
1669 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
1670 }
1671}
cf8280ee 1672
e8e26350
PW		 1673static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr)
1674{
1675 struct ixgbe_hw *hw = &adapter->hw;
1676
1677 if (eicr & IXGBE_EICR_GPI_SDP1) {
1678 /* Clear the interrupt */
1679 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
1680 schedule_work(&adapter->multispeed_fiber_task);
1681 } else if (eicr & IXGBE_EICR_GPI_SDP2) {
1682 /* Clear the interrupt */
1683 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP2);
1684 schedule_work(&adapter->sfp_config_module_task);
1685 } else {
1686 /* Interrupt isn't for us... */
1687 return;
1688 }
1689}
1690
cf8280ee
JB		 1691static void ixgbe_check_lsc(struct ixgbe_adapter *adapter)
1692{
1693 struct ixgbe_hw *hw = &adapter->hw;
1694
1695 adapter->lsc_int++;
1696 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
1697 adapter->link_check_timeout = jiffies;
1698 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
1699 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC);
8a0717f3 1700 IXGBE_WRITE_FLUSH(hw);
cf8280ee
JB		 1701 schedule_work(&adapter->watchdog_task);
1702 }
1703}
1704
9a799d71
AK		 1705static irqreturn_t ixgbe_msix_lsc(int irq, void *data)
1706{
1707 struct net_device *netdev = data;
1708 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1709 struct ixgbe_hw *hw = &adapter->hw;
54037505
DS		 1710 u32 eicr;
1711
1712 /*
1713 * Workaround for Silicon errata. Use clear-by-write instead
1714 * of clear-by-read. Reading with EICS will return the
1715 * interrupt causes without clearing, which later be done
1716 * with the write to EICR.
1717 */
1718 eicr = IXGBE_READ_REG(hw, IXGBE_EICS);
1719 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr);
9a799d71 1720
cf8280ee
JB		 1721 if (eicr & IXGBE_EICR_LSC)
1722 ixgbe_check_lsc(adapter);
d4f80882 1723
1cdd1ec8
GR		 1724 if (eicr & IXGBE_EICR_MAILBOX)
1725 ixgbe_msg_task(adapter);
1726
e8e26350
PW		 1727 if (hw->mac.type == ixgbe_mac_82598EB)
1728 ixgbe_check_fan_failure(adapter, eicr);
0befdb3e 1729
c4cf55e5 1730 if (hw->mac.type == ixgbe_mac_82599EB) {
e8e26350 1731 ixgbe_check_sfp_event(adapter, eicr);
119fc60a
MC		 1732 adapter->interrupt_event = eicr;
1733 if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
1734 ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC)))
1735 schedule_work(&adapter->check_overtemp_task);
c4cf55e5
PWJ		 1736
1737 /* Handle Flow Director Full threshold interrupt */
1738 if (eicr & IXGBE_EICR_FLOW_DIR) {
1739 int i;
1740 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_FLOW_DIR);
1741 /* Disable transmits before FDIR Re-initialization */
1742 netif_tx_stop_all_queues(netdev);
1743 for (i = 0; i < adapter->num_tx_queues; i++) {
1744 struct ixgbe_ring *tx_ring =
e8e9f696 1745 adapter->tx_ring[i];
c4cf55e5 1746 if (test_and_clear_bit(__IXGBE_FDIR_INIT_DONE,
e8e9f696 1747 &tx_ring->reinit_state))
c4cf55e5
PWJ		 1748 schedule_work(&adapter->fdir_reinit_task);
1749 }
1750 }
1751 }
d4f80882
AV		 1752 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1753 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER);
9a799d71
AK		 1754
1755 return IRQ_HANDLED;
1756}
1757
fe49f04a
AD		 1758static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter,
1759 u64 qmask)
1760{
1761 u32 mask;
1762
1763 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1764 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
1765 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
1766 } else {
1767 mask = (qmask & 0xFFFFFFFF);
1768 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(0), mask);
1769 mask = (qmask >> 32);
1770 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(1), mask);
1771 }
1772 /* skip the flush */
1773}
1774
1775static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter,
e8e9f696 1776 u64 qmask)
fe49f04a
AD		 1777{
1778 u32 mask;
1779
1780 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1781 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
1782 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, mask);
1783 } else {
1784 mask = (qmask & 0xFFFFFFFF);
1785 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), mask);
1786 mask = (qmask >> 32);
1787 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), mask);
1788 }
1789 /* skip the flush */
1790}
1791
9a799d71
AK		 1792static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data)
1793{
021230d4
AV		 1794 struct ixgbe_q_vector *q_vector = data;
1795 struct ixgbe_adapter *adapter = q_vector->adapter;
3a581073 1796 struct ixgbe_ring *tx_ring;
021230d4
AV		 1797 int i, r_idx;
1798
1799 if (!q_vector->txr_count)
1800 return IRQ_HANDLED;
1801
1802 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1803 for (i = 0; i < q_vector->txr_count; i++) {
4a0b9ca0 1804 tx_ring = adapter->tx_ring[r_idx];
3a581073
JB		 1805 tx_ring->total_bytes = 0;
1806 tx_ring->total_packets = 0;
021230d4 1807 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
e8e9f696 1808 r_idx + 1);
021230d4 1809 }
9a799d71 1810
9b471446 1811 /* EIAM disabled interrupts (on this vector) for us */
91281fd3
AD		 1812 napi_schedule(&q_vector->napi);
1813
9a799d71
AK		 1814 return IRQ_HANDLED;
1815}
1816
021230d4
AV		 1817/**
1818 * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
1819 * @irq: unused
1820 * @data: pointer to our q_vector struct for this interrupt vector
1821 **/
9a799d71
AK		 1822static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data)
1823{
021230d4
AV		 1824 struct ixgbe_q_vector *q_vector = data;
1825 struct ixgbe_adapter *adapter = q_vector->adapter;
3a581073 1826 struct ixgbe_ring *rx_ring;
021230d4 1827 int r_idx;
30efa5a3 1828 int i;
021230d4
AV		 1829
1830 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
30efa5a3 1831 for (i = 0; i < q_vector->rxr_count; i++) {
4a0b9ca0 1832 rx_ring = adapter->rx_ring[r_idx];
30efa5a3
JB		 1833 rx_ring->total_bytes = 0;
1834 rx_ring->total_packets = 0;
1835 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
e8e9f696 1836 r_idx + 1);
30efa5a3
JB		 1837 }
1838
021230d4
AV		 1839 if (!q_vector->rxr_count)
1840 return IRQ_HANDLED;
1841
021230d4 1842 /* disable interrupts on this vector only */
9b471446 1843 /* EIAM disabled interrupts (on this vector) for us */
288379f0 1844 napi_schedule(&q_vector->napi);
021230d4
AV		 1845
1846 return IRQ_HANDLED;
1847}
1848
1849static irqreturn_t ixgbe_msix_clean_many(int irq, void *data)
1850{
91281fd3
AD		 1851 struct ixgbe_q_vector *q_vector = data;
1852 struct ixgbe_adapter *adapter = q_vector->adapter;
1853 struct ixgbe_ring *ring;
1854 int r_idx;
1855 int i;
1856
1857 if (!q_vector->txr_count && !q_vector->rxr_count)
1858 return IRQ_HANDLED;
1859
1860 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1861 for (i = 0; i < q_vector->txr_count; i++) {
4a0b9ca0 1862 ring = adapter->tx_ring[r_idx];
91281fd3
AD		 1863 ring->total_bytes = 0;
1864 ring->total_packets = 0;
1865 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
e8e9f696 1866 r_idx + 1);
91281fd3
AD		 1867 }
1868
1869 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1870 for (i = 0; i < q_vector->rxr_count; i++) {
4a0b9ca0 1871 ring = adapter->rx_ring[r_idx];
91281fd3
AD		 1872 ring->total_bytes = 0;
1873 ring->total_packets = 0;
1874 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
e8e9f696 1875 r_idx + 1);
91281fd3
AD		 1876 }
1877
9b471446 1878 /* EIAM disabled interrupts (on this vector) for us */
91281fd3 1879 napi_schedule(&q_vector->napi);
9a799d71 1880
9a799d71
AK		 1881 return IRQ_HANDLED;
1882}
1883
021230d4
AV		 1884/**
1885 * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine
1886 * @napi: napi struct with our devices info in it
1887 * @budget: amount of work driver is allowed to do this pass, in packets
1888 *
f0848276
JB		 1889 * This function is optimized for cleaning one queue only on a single
1890 * q_vector!!!
021230d4 1891 **/
9a799d71
AK		 1892static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget)
1893{
021230d4 1894 struct ixgbe_q_vector *q_vector =
e8e9f696 1895 container_of(napi, struct ixgbe_q_vector, napi);
021230d4 1896 struct ixgbe_adapter *adapter = q_vector->adapter;
f0848276 1897 struct ixgbe_ring *rx_ring = NULL;
9a799d71 1898 int work_done = 0;
021230d4 1899 long r_idx;
9a799d71 1900
021230d4 1901 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
4a0b9ca0 1902 rx_ring = adapter->rx_ring[r_idx];
5dd2d332 1903#ifdef CONFIG_IXGBE_DCA
bd0362dd 1904 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
3a581073 1905 ixgbe_update_rx_dca(adapter, rx_ring);
bd0362dd 1906#endif
9a799d71 1907
78b6f4ce 1908 ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
9a799d71 1909
021230d4
AV		 1910 /* If all Rx work done, exit the polling mode */
1911 if (work_done < budget) {
288379f0 1912 napi_complete(napi);
f7554a2b 1913 if (adapter->rx_itr_setting & 1)
f494e8fa 1914 ixgbe_set_itr_msix(q_vector);
9a799d71 1915 if (!test_bit(__IXGBE_DOWN, &adapter->state))
fe49f04a 1916 ixgbe_irq_enable_queues(adapter,
e8e9f696 1917 ((u64)1 << q_vector->v_idx));
9a799d71
AK		 1918 }
1919
1920 return work_done;
1921}
1922
f0848276 1923/**
91281fd3 1924 * ixgbe_clean_rxtx_many - msix (aka one shot) rx clean routine
f0848276
JB		 1925 * @napi: napi struct with our devices info in it
1926 * @budget: amount of work driver is allowed to do this pass, in packets
1927 *
1928 * This function will clean more than one rx queue associated with a
1929 * q_vector.
1930 **/
91281fd3 1931static int ixgbe_clean_rxtx_many(struct napi_struct *napi, int budget)
f0848276
JB		 1932{
1933 struct ixgbe_q_vector *q_vector =
e8e9f696 1934 container_of(napi, struct ixgbe_q_vector, napi);
f0848276 1935 struct ixgbe_adapter *adapter = q_vector->adapter;
91281fd3 1936 struct ixgbe_ring *ring = NULL;
f0848276
JB		 1937 int work_done = 0, i;
1938 long r_idx;
91281fd3
AD		 1939 bool tx_clean_complete = true;
1940
1941 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1942 for (i = 0; i < q_vector->txr_count; i++) {
4a0b9ca0 1943 ring = adapter->tx_ring[r_idx];
91281fd3
AD		 1944#ifdef CONFIG_IXGBE_DCA
1945 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1946 ixgbe_update_tx_dca(adapter, ring);
1947#endif
1948 tx_clean_complete &= ixgbe_clean_tx_irq(q_vector, ring);
1949 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
e8e9f696 1950 r_idx + 1);
91281fd3 1951 }
f0848276
JB		 1952
1953 /* attempt to distribute budget to each queue fairly, but don't allow
1954 * the budget to go below 1 because we'll exit polling */
1955 budget /= (q_vector->rxr_count ?: 1);
1956 budget = max(budget, 1);
1957 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1958 for (i = 0; i < q_vector->rxr_count; i++) {
4a0b9ca0 1959 ring = adapter->rx_ring[r_idx];
5dd2d332 1960#ifdef CONFIG_IXGBE_DCA
f0848276 1961 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
91281fd3 1962 ixgbe_update_rx_dca(adapter, ring);
f0848276 1963#endif
91281fd3 1964 ixgbe_clean_rx_irq(q_vector, ring, &work_done, budget);
f0848276 1965 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
e8e9f696 1966 r_idx + 1);
f0848276
JB		 1967 }
1968
1969 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
4a0b9ca0 1970 ring = adapter->rx_ring[r_idx];
f0848276 1971 /* If all Rx work done, exit the polling mode */
7f821875 1972 if (work_done < budget) {
288379f0 1973 napi_complete(napi);
f7554a2b 1974 if (adapter->rx_itr_setting & 1)
f0848276
JB		 1975 ixgbe_set_itr_msix(q_vector);
1976 if (!test_bit(__IXGBE_DOWN, &adapter->state))
fe49f04a 1977 ixgbe_irq_enable_queues(adapter,
e8e9f696 1978 ((u64)1 << q_vector->v_idx));
f0848276
JB		 1979 return 0;
1980 }
1981
1982 return work_done;
1983}
91281fd3
AD		 1984
1985/**
1986 * ixgbe_clean_txonly - msix (aka one shot) tx clean routine
1987 * @napi: napi struct with our devices info in it
1988 * @budget: amount of work driver is allowed to do this pass, in packets
1989 *
1990 * This function is optimized for cleaning one queue only on a single
1991 * q_vector!!!
1992 **/
1993static int ixgbe_clean_txonly(struct napi_struct *napi, int budget)
1994{
1995 struct ixgbe_q_vector *q_vector =
e8e9f696 1996 container_of(napi, struct ixgbe_q_vector, napi);
91281fd3
AD		 1997 struct ixgbe_adapter *adapter = q_vector->adapter;
1998 struct ixgbe_ring *tx_ring = NULL;
1999 int work_done = 0;
2000 long r_idx;
2001
2002 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
4a0b9ca0 2003 tx_ring = adapter->tx_ring[r_idx];
91281fd3
AD		 2004#ifdef CONFIG_IXGBE_DCA
2005 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
2006 ixgbe_update_tx_dca(adapter, tx_ring);
2007#endif
2008
2009 if (!ixgbe_clean_tx_irq(q_vector, tx_ring))
2010 work_done = budget;
2011
f7554a2b 2012 /* If all Tx work done, exit the polling mode */
91281fd3
AD		 2013 if (work_done < budget) {
2014 napi_complete(napi);
f7554a2b 2015 if (adapter->tx_itr_setting & 1)
91281fd3
AD		 2016 ixgbe_set_itr_msix(q_vector);
2017 if (!test_bit(__IXGBE_DOWN, &adapter->state))
e8e9f696
JP		 2018 ixgbe_irq_enable_queues(adapter,
2019 ((u64)1 << q_vector->v_idx));
91281fd3
AD		 2020 }
2021
2022 return work_done;
2023}
2024
021230d4 2025static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx,
e8e9f696 2026 int r_idx)
021230d4 2027{
7a921c93
AD		 2028 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
2029
2030 set_bit(r_idx, q_vector->rxr_idx);
2031 q_vector->rxr_count++;
021230d4
AV		 2032}
2033
2034static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx,
e8e9f696 2035 int t_idx)
021230d4 2036{
7a921c93
AD		 2037 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
2038
2039 set_bit(t_idx, q_vector->txr_idx);
2040 q_vector->txr_count++;
021230d4
AV		 2041}
2042
9a799d71 2043/**
021230d4
AV		 2044 * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors
2045 * @adapter: board private structure to initialize
2046 * @vectors: allotted vector count for descriptor rings
9a799d71 2047 *
021230d4
AV		 2048 * This function maps descriptor rings to the queue-specific vectors
2049 * we were allotted through the MSI-X enabling code. Ideally, we'd have
2050 * one vector per ring/queue, but on a constrained vector budget, we
2051 * group the rings as "efficiently" as possible. You would add new
2052 * mapping configurations in here.
9a799d71 2053 **/
021230d4 2054static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter,
e8e9f696 2055 int vectors)
021230d4
AV		 2056{
2057 int v_start = 0;
2058 int rxr_idx = 0, txr_idx = 0;
2059 int rxr_remaining = adapter->num_rx_queues;
2060 int txr_remaining = adapter->num_tx_queues;
2061 int i, j;
2062 int rqpv, tqpv;
2063 int err = 0;
2064
2065 /* No mapping required if MSI-X is disabled. */
2066 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
2067 goto out;
9a799d71 2068
021230d4
AV		 2069 /*
2070 * The ideal configuration...
2071 * We have enough vectors to map one per queue.
2072 */
2073 if (vectors == adapter->num_rx_queues + adapter->num_tx_queues) {
2074 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
2075 map_vector_to_rxq(adapter, v_start, rxr_idx);
9a799d71 2076
021230d4
AV		 2077 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
2078 map_vector_to_txq(adapter, v_start, txr_idx);
9a799d71 2079
9a799d71 2080 goto out;
021230d4 2081 }
9a799d71 2082
021230d4
AV		 2083 /*
2084 * If we don't have enough vectors for a 1-to-1
2085 * mapping, we'll have to group them so there are
2086 * multiple queues per vector.
2087 */
2088 /* Re-adjusting *qpv takes care of the remainder. */
2089 for (i = v_start; i < vectors; i++) {
2090 rqpv = DIV_ROUND_UP(rxr_remaining, vectors - i);
2091 for (j = 0; j < rqpv; j++) {
2092 map_vector_to_rxq(adapter, i, rxr_idx);
2093 rxr_idx++;
2094 rxr_remaining--;
2095 }
2096 }
2097 for (i = v_start; i < vectors; i++) {
2098 tqpv = DIV_ROUND_UP(txr_remaining, vectors - i);
2099 for (j = 0; j < tqpv; j++) {
2100 map_vector_to_txq(adapter, i, txr_idx);
2101 txr_idx++;
2102 txr_remaining--;
9a799d71 2103 }
9a799d71
AK		 2104 }
2105
021230d4
AV		 2106out:
2107 return err;
2108}
2109
2110/**
2111 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
2112 * @adapter: board private structure
2113 *
2114 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
2115 * interrupts from the kernel.
2116 **/
2117static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
2118{
2119 struct net_device *netdev = adapter->netdev;
2120 irqreturn_t (*handler)(int, void *);
2121 int i, vector, q_vectors, err;
e8e9f696 2122 int ri = 0, ti = 0;
021230d4
AV		 2123
2124 /* Decrement for Other and TCP Timer vectors */
2125 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2126
2127 /* Map the Tx/Rx rings to the vectors we were allotted. */
2128 err = ixgbe_map_rings_to_vectors(adapter, q_vectors);
2129 if (err)
2130 goto out;
2131
2132#define SET_HANDLER(_v) ((!(_v)->rxr_count) ? &ixgbe_msix_clean_tx : \
e8e9f696
JP		 2133 (!(_v)->txr_count) ? &ixgbe_msix_clean_rx : \
2134 &ixgbe_msix_clean_many)
021230d4 2135 for (vector = 0; vector < q_vectors; vector++) {
7a921c93 2136 handler = SET_HANDLER(adapter->q_vector[vector]);
cb13fc20 2137
e8e9f696 2138 if (handler == &ixgbe_msix_clean_rx) {
cb13fc20
RO		 2139 sprintf(adapter->name[vector], "%s-%s-%d",
2140 netdev->name, "rx", ri++);
e8e9f696 2141 } else if (handler == &ixgbe_msix_clean_tx) {
cb13fc20
RO		 2142 sprintf(adapter->name[vector], "%s-%s-%d",
2143 netdev->name, "tx", ti++);
e8e9f696 2144 } else
cb13fc20
RO		 2145 sprintf(adapter->name[vector], "%s-%s-%d",
2146 netdev->name, "TxRx", vector);
2147
021230d4 2148 err = request_irq(adapter->msix_entries[vector].vector,
e8e9f696
JP		 2149 handler, 0, adapter->name[vector],
2150 adapter->q_vector[vector]);
9a799d71 2151 if (err) {
396e799c 2152 e_err(probe, "request_irq failed for MSIX interrupt "
849c4542 2153 "Error: %d\n", err);
021230d4 2154 goto free_queue_irqs;
9a799d71 2155 }
9a799d71
AK		 2156 }
2157
021230d4
AV		 2158 sprintf(adapter->name[vector], "%s:lsc", netdev->name);
2159 err = request_irq(adapter->msix_entries[vector].vector,
e8e9f696 2160 ixgbe_msix_lsc, 0, adapter->name[vector], netdev);
9a799d71 2161 if (err) {
396e799c 2162 e_err(probe, "request_irq for msix_lsc failed: %d\n", err);
021230d4 2163 goto free_queue_irqs;
9a799d71
AK		 2164 }
2165
9a799d71
AK		 2166 return 0;
2167
021230d4
AV		 2168free_queue_irqs:
2169 for (i = vector - 1; i >= 0; i--)
2170 free_irq(adapter->msix_entries[--vector].vector,
e8e9f696 2171 adapter->q_vector[i]);
021230d4
AV		 2172 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
2173 pci_disable_msix(adapter->pdev);
9a799d71
AK		 2174 kfree(adapter->msix_entries);
2175 adapter->msix_entries = NULL;
021230d4 2176out:
9a799d71
AK		 2177 return err;
2178}
2179
f494e8fa
AV		 2180static void ixgbe_set_itr(struct ixgbe_adapter *adapter)
2181{
7a921c93 2182 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
f494e8fa
AV		 2183 u8 current_itr;
2184 u32 new_itr = q_vector->eitr;
4a0b9ca0
PW		 2185 struct ixgbe_ring *rx_ring = adapter->rx_ring[0];
2186 struct ixgbe_ring *tx_ring = adapter->tx_ring[0];
f494e8fa 2187
30efa5a3 2188 q_vector->tx_itr = ixgbe_update_itr(adapter, new_itr,
e8e9f696
JP		 2189 q_vector->tx_itr,
2190 tx_ring->total_packets,
2191 tx_ring->total_bytes);
30efa5a3 2192 q_vector->rx_itr = ixgbe_update_itr(adapter, new_itr,
e8e9f696
JP		 2193 q_vector->rx_itr,
2194 rx_ring->total_packets,
2195 rx_ring->total_bytes);
f494e8fa 2196
30efa5a3 2197 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
f494e8fa
AV		 2198
2199 switch (current_itr) {
2200 /* counts and packets in update_itr are dependent on these numbers */
2201 case lowest_latency:
2202 new_itr = 100000;
2203 break;
2204 case low_latency:
2205 new_itr = 20000; /* aka hwitr = ~200 */
2206 break;
2207 case bulk_latency:
2208 new_itr = 8000;
2209 break;
2210 default:
2211 break;
2212 }
2213
2214 if (new_itr != q_vector->eitr) {
fe49f04a
AD		 2215 /* do an exponential smoothing */
2216 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
509ee935
JB		 2217
2218 /* save the algorithm value here, not the smoothed one */
2219 q_vector->eitr = new_itr;
fe49f04a
AD		 2220
2221 ixgbe_write_eitr(q_vector);
f494e8fa 2222 }
f494e8fa
AV		 2223}
2224
79aefa45
AD		 2225/**
2226 * ixgbe_irq_enable - Enable default interrupt generation settings
2227 * @adapter: board private structure
2228 **/
6af3b9eb
ET		 2229static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues,
2230 bool flush)
79aefa45
AD		 2231{
2232 u32 mask;
835462fc
NS		 2233
2234 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
119fc60a
MC		 2235 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
2236 mask |= IXGBE_EIMS_GPI_SDP0;
6ab33d51
DM		 2237 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
2238 mask |= IXGBE_EIMS_GPI_SDP1;
e8e26350 2239 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
2a41ff81 2240 mask |= IXGBE_EIMS_ECC;
e8e26350
PW		 2241 mask |= IXGBE_EIMS_GPI_SDP1;
2242 mask |= IXGBE_EIMS_GPI_SDP2;
1cdd1ec8
GR		 2243 if (adapter->num_vfs)
2244 mask |= IXGBE_EIMS_MAILBOX;
e8e26350 2245 }
c4cf55e5
PWJ		 2246 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
2247 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
2248 mask |= IXGBE_EIMS_FLOW_DIR;
e8e26350 2249
79aefa45 2250 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
6af3b9eb
ET		 2251 if (queues)
2252 ixgbe_irq_enable_queues(adapter, ~0);
2253 if (flush)
2254 IXGBE_WRITE_FLUSH(&adapter->hw);
1cdd1ec8
GR		 2255
2256 if (adapter->num_vfs > 32) {
2257 u32 eitrsel = (1 << (adapter->num_vfs - 32)) - 1;
2258 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel);
2259 }
79aefa45 2260}
021230d4 2261
9a799d71 2262/**
021230d4 2263 * ixgbe_intr - legacy mode Interrupt Handler
9a799d71
AK		 2264 * @irq: interrupt number
2265 * @data: pointer to a network interface device structure
9a799d71
AK		 2266 **/
2267static irqreturn_t ixgbe_intr(int irq, void *data)
2268{
2269 struct net_device *netdev = data;
2270 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2271 struct ixgbe_hw *hw = &adapter->hw;
7a921c93 2272 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
9a799d71
AK		 2273 u32 eicr;
2274
54037505 2275 /*
6af3b9eb 2276 * Workaround for silicon errata on 82598. Mask the interrupts
54037505
DS		 2277 * before the read of EICR.
2278 */
2279 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
2280
021230d4
AV		 2281 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
2282 * therefore no explict interrupt disable is necessary */
2283 eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
f47cf66e 2284 if (!eicr) {
6af3b9eb
ET		 2285 /*
2286 * shared interrupt alert!
f47cf66e 2287 * make sure interrupts are enabled because the read will
6af3b9eb
ET		 2288 * have disabled interrupts due to EIAM
2289 * finish the workaround of silicon errata on 82598. Unmask
2290 * the interrupt that we masked before the EICR read.
2291 */
2292 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2293 ixgbe_irq_enable(adapter, true, true);
9a799d71 2294 return IRQ_NONE; /* Not our interrupt */
f47cf66e 2295 }
9a799d71 2296
cf8280ee
JB		 2297 if (eicr & IXGBE_EICR_LSC)
2298 ixgbe_check_lsc(adapter);
021230d4 2299
e8e26350
PW		 2300 if (hw->mac.type == ixgbe_mac_82599EB)
2301 ixgbe_check_sfp_event(adapter, eicr);
2302
0befdb3e 2303 ixgbe_check_fan_failure(adapter, eicr);
119fc60a
MC		 2304 if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
2305 ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC)))
2306 schedule_work(&adapter->check_overtemp_task);
0befdb3e 2307
7a921c93 2308 if (napi_schedule_prep(&(q_vector->napi))) {
4a0b9ca0
PW		 2309 adapter->tx_ring[0]->total_packets = 0;
2310 adapter->tx_ring[0]->total_bytes = 0;
2311 adapter->rx_ring[0]->total_packets = 0;
2312 adapter->rx_ring[0]->total_bytes = 0;
021230d4 2313 /* would disable interrupts here but EIAM disabled it */
7a921c93 2314 __napi_schedule(&(q_vector->napi));
9a799d71
AK		 2315 }
2316
6af3b9eb
ET		 2317 /*
2318 * re-enable link(maybe) and non-queue interrupts, no flush.
2319 * ixgbe_poll will re-enable the queue interrupts
2320 */
2321
2322 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2323 ixgbe_irq_enable(adapter, false, false);
2324
9a799d71
AK		 2325 return IRQ_HANDLED;
2326}
2327
021230d4
AV		 2328static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter)
2329{
2330 int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2331
2332 for (i = 0; i < q_vectors; i++) {
7a921c93 2333 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
021230d4
AV		 2334 bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES);
2335 bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES);
2336 q_vector->rxr_count = 0;
2337 q_vector->txr_count = 0;
2338 }
2339}
2340
9a799d71
AK		 2341/**
2342 * ixgbe_request_irq - initialize interrupts
2343 * @adapter: board private structure
2344 *
2345 * Attempts to configure interrupts using the best available
2346 * capabilities of the hardware and kernel.
2347 **/
021230d4 2348static int ixgbe_request_irq(struct ixgbe_adapter *adapter)
9a799d71
AK		 2349{
2350 struct net_device *netdev = adapter->netdev;
021230d4 2351 int err;
9a799d71 2352
021230d4
AV		 2353 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2354 err = ixgbe_request_msix_irqs(adapter);
2355 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
a0607fd3 2356 err = request_irq(adapter->pdev->irq, ixgbe_intr, 0,
e8e9f696 2357 netdev->name, netdev);
021230d4 2358 } else {
a0607fd3 2359 err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED,
e8e9f696 2360 netdev->name, netdev);
9a799d71
AK		 2361 }
2362
9a799d71 2363 if (err)
396e799c 2364 e_err(probe, "request_irq failed, Error %d\n", err);
9a799d71 2365
9a799d71
AK		 2366 return err;
2367}
2368
2369static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
2370{
2371 struct net_device *netdev = adapter->netdev;
2372
2373 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
021230d4 2374 int i, q_vectors;
9a799d71 2375
021230d4
AV		 2376 q_vectors = adapter->num_msix_vectors;
2377
2378 i = q_vectors - 1;
9a799d71 2379 free_irq(adapter->msix_entries[i].vector, netdev);
9a799d71 2380
021230d4
AV		 2381 i--;
2382 for (; i >= 0; i--) {
2383 free_irq(adapter->msix_entries[i].vector,
e8e9f696 2384 adapter->q_vector[i]);
021230d4
AV		 2385 }
2386
2387 ixgbe_reset_q_vectors(adapter);
2388 } else {
2389 free_irq(adapter->pdev->irq, netdev);
9a799d71
AK		 2390 }
2391}
2392
22d5a71b
JB		 2393/**
2394 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
2395 * @adapter: board private structure
2396 **/
2397static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
2398{
835462fc
NS		 2399 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
2400 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
2401 } else {
2402 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000);
2403 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0);
22d5a71b 2404 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0);
1cdd1ec8
GR		 2405 if (adapter->num_vfs > 32)
2406 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0);
22d5a71b
JB		 2407 }
2408 IXGBE_WRITE_FLUSH(&adapter->hw);
2409 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2410 int i;
2411 for (i = 0; i < adapter->num_msix_vectors; i++)
2412 synchronize_irq(adapter->msix_entries[i].vector);
2413 } else {
2414 synchronize_irq(adapter->pdev->irq);
2415 }
2416}
2417
9a799d71
AK		 2418/**
2419 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
2420 *
2421 **/
2422static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
2423{
9a799d71
AK		 2424 struct ixgbe_hw *hw = &adapter->hw;
2425
021230d4 2426 IXGBE_WRITE_REG(hw, IXGBE_EITR(0),
e8e9f696 2427 EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr_param));
9a799d71 2428
e8e26350
PW		 2429 ixgbe_set_ivar(adapter, 0, 0, 0);
2430 ixgbe_set_ivar(adapter, 1, 0, 0);
021230d4
AV		 2431
2432 map_vector_to_rxq(adapter, 0, 0);
2433 map_vector_to_txq(adapter, 0, 0);
2434
396e799c 2435 e_info(hw, "Legacy interrupt IVAR setup done\n");
9a799d71
AK		 2436}
2437
43e69bf0
AD		 2438/**
2439 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset
2440 * @adapter: board private structure
2441 * @ring: structure containing ring specific data
2442 *
2443 * Configure the Tx descriptor ring after a reset.
2444 **/
84418e3b
AD		 2445void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter,
2446 struct ixgbe_ring *ring)
43e69bf0
AD		 2447{
2448 struct ixgbe_hw *hw = &adapter->hw;
2449 u64 tdba = ring->dma;
2f1860b8
AD		 2450 int wait_loop = 10;
2451 u32 txdctl;
43e69bf0
AD		 2452 u16 reg_idx = ring->reg_idx;
2453
2f1860b8
AD		 2454 /* disable queue to avoid issues while updating state */
2455 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
2456 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx),
2457 txdctl & ~IXGBE_TXDCTL_ENABLE);
2458 IXGBE_WRITE_FLUSH(hw);
2459
43e69bf0 2460 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx),
e8e9f696 2461 (tdba & DMA_BIT_MASK(32)));
43e69bf0
AD		 2462 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32));
2463 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx),
2464 ring->count * sizeof(union ixgbe_adv_tx_desc));
2465 IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0);
2466 IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0);
84ea2591 2467 ring->tail = hw->hw_addr + IXGBE_TDT(reg_idx);
43e69bf0 2468
2f1860b8
AD		 2469 /* configure fetching thresholds */
2470 if (adapter->rx_itr_setting == 0) {
2471 /* cannot set wthresh when itr==0 */
2472 txdctl &= ~0x007F0000;
2473 } else {
2474 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
2475 txdctl |= (8 << 16);
2476 }
2477 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
2478 /* PThresh workaround for Tx hang with DFP enabled. */
2479 txdctl |= 32;
2480 }
2481
2482 /* reinitialize flowdirector state */
2483 set_bit(__IXGBE_FDIR_INIT_DONE, &ring->reinit_state);
2484
2485 /* enable queue */
2486 txdctl |= IXGBE_TXDCTL_ENABLE;
2487 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl);
2488
2489 /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */
2490 if (hw->mac.type == ixgbe_mac_82598EB &&
2491 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
2492 return;
2493
2494 /* poll to verify queue is enabled */
2495 do {
2496 msleep(1);
2497 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
2498 } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE));
2499 if (!wait_loop)
2500 e_err(drv, "Could not enable Tx Queue %d\n", reg_idx);
43e69bf0
AD		 2501}
2502
120ff942
AD		 2503static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
2504{
2505 struct ixgbe_hw *hw = &adapter->hw;
2506 u32 rttdcs;
2507 u32 mask;
2508
2509 if (hw->mac.type == ixgbe_mac_82598EB)
2510 return;
2511
2512 /* disable the arbiter while setting MTQC */
2513 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
2514 rttdcs |= IXGBE_RTTDCS_ARBDIS;
2515 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
2516
2517 /* set transmit pool layout */
2518 mask = (IXGBE_FLAG_SRIOV_ENABLED | IXGBE_FLAG_DCB_ENABLED);
2519 switch (adapter->flags & mask) {
2520
2521 case (IXGBE_FLAG_SRIOV_ENABLED):
2522 IXGBE_WRITE_REG(hw, IXGBE_MTQC,
2523 (IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF));
2524 break;
2525
2526 case (IXGBE_FLAG_DCB_ENABLED):
2527 /* We enable 8 traffic classes, DCB only */
2528 IXGBE_WRITE_REG(hw, IXGBE_MTQC,
2529 (IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ));
2530 break;
2531
2532 default:
2533 IXGBE_WRITE_REG(hw, IXGBE_MTQC, IXGBE_MTQC_64Q_1PB);
2534 break;
2535 }
2536
2537 /* re-enable the arbiter */
2538 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
2539 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
2540}
2541
9a799d71 2542/**
3a581073 2543 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
9a799d71
AK		 2544 * @adapter: board private structure
2545 *
2546 * Configure the Tx unit of the MAC after a reset.
2547 **/
2548static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
2549{
2f1860b8
AD		 2550 struct ixgbe_hw *hw = &adapter->hw;
2551 u32 dmatxctl;
43e69bf0 2552 u32 i;
9a799d71 2553
2f1860b8
AD		 2554 ixgbe_setup_mtqc(adapter);
2555
2556 if (hw->mac.type != ixgbe_mac_82598EB) {
2557 /* DMATXCTL.EN must be before Tx queues are enabled */
2558 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
2559 dmatxctl |= IXGBE_DMATXCTL_TE;
2560 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
2561 }
2562
9a799d71 2563 /* Setup the HW Tx Head and Tail descriptor pointers */
43e69bf0
AD		 2564 for (i = 0; i < adapter->num_tx_queues; i++)
2565 ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]);
9a799d71
AK		 2566}
2567
e8e26350 2568#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
cc41ac7c 2569
a6616b42 2570static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter,
e8e9f696 2571 struct ixgbe_ring *rx_ring)
cc41ac7c 2572{
cc41ac7c 2573 u32 srrctl;
a6616b42 2574 int index;
0cefafad 2575 struct ixgbe_ring_feature *feature = adapter->ring_feature;
3be1adfb 2576
a6616b42
YZ		 2577 index = rx_ring->reg_idx;
2578 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
2579 unsigned long mask;
0cefafad 2580 mask = (unsigned long) feature[RING_F_RSS].mask;
3be1adfb 2581 index = index & mask;
cc41ac7c 2582 }
cc41ac7c
JB		 2583 srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(index));
2584
2585 srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK;
2586 srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK;
9e10e045
AD		 2587 if (adapter->num_vfs)
2588 srrctl |= IXGBE_SRRCTL_DROP_EN;
cc41ac7c 2589
afafd5b0
AD		 2590 srrctl |= (IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
2591 IXGBE_SRRCTL_BSIZEHDR_MASK;
2592
6e455b89 2593 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
afafd5b0
AD		 2594#if (PAGE_SIZE / 2) > IXGBE_MAX_RXBUFFER
2595 srrctl |= IXGBE_MAX_RXBUFFER >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2596#else
2597 srrctl |= (PAGE_SIZE / 2) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2598#endif
cc41ac7c 2599 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
cc41ac7c 2600 } else {
afafd5b0
AD		 2601 srrctl |= ALIGN(rx_ring->rx_buf_len, 1024) >>
2602 IXGBE_SRRCTL_BSIZEPKT_SHIFT;
cc41ac7c 2603 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
cc41ac7c 2604 }
e8e26350 2605
cc41ac7c
JB		 2606 IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(index), srrctl);
2607}
9a799d71 2608
05abb126 2609static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
0cefafad 2610{
05abb126
AD		 2611 struct ixgbe_hw *hw = &adapter->hw;
2612 static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D,
e8e9f696
JP		 2613 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE,
2614 0x6A3E67EA, 0x14364D17, 0x3BED200D};
05abb126
AD		 2615 u32 mrqc = 0, reta = 0;
2616 u32 rxcsum;
2617 int i, j;
0cefafad
JB		 2618 int mask;
2619
05abb126
AD		 2620 /* Fill out hash function seeds */
2621 for (i = 0; i < 10; i++)
2622 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]);
2623
2624 /* Fill out redirection table */
2625 for (i = 0, j = 0; i < 128; i++, j++) {
2626 if (j == adapter->ring_feature[RING_F_RSS].indices)
2627 j = 0;
2628 /* reta = 4-byte sliding window of
2629 * 0x00..(indices-1)(indices-1)00..etc. */
2630 reta = (reta << 8) | (j * 0x11);
2631 if ((i & 3) == 3)
2632 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
2633 }
0cefafad 2634
05abb126
AD		 2635 /* Disable indicating checksum in descriptor, enables RSS hash */
2636 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
2637 rxcsum |= IXGBE_RXCSUM_PCSD;
2638 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
2639
2640 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
2641 mask = adapter->flags & IXGBE_FLAG_RSS_ENABLED;
2642 else
2643 mask = adapter->flags & (IXGBE_FLAG_RSS_ENABLED
0cefafad 2644#ifdef CONFIG_IXGBE_DCB
05abb126 2645 | IXGBE_FLAG_DCB_ENABLED
0cefafad 2646#endif
05abb126
AD		 2647 | IXGBE_FLAG_SRIOV_ENABLED
2648 );
0cefafad
JB		 2649
2650 switch (mask) {
2651 case (IXGBE_FLAG_RSS_ENABLED):
2652 mrqc = IXGBE_MRQC_RSSEN;
2653 break;
1cdd1ec8
GR		 2654 case (IXGBE_FLAG_SRIOV_ENABLED):
2655 mrqc = IXGBE_MRQC_VMDQEN;
2656 break;
0cefafad
JB		 2657#ifdef CONFIG_IXGBE_DCB
2658 case (IXGBE_FLAG_DCB_ENABLED):
2659 mrqc = IXGBE_MRQC_RT8TCEN;
2660 break;
2661#endif /* CONFIG_IXGBE_DCB */
2662 default:
2663 break;
2664 }
2665
05abb126
AD		 2666 /* Perform hash on these packet types */
2667 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4
2668 | IXGBE_MRQC_RSS_FIELD_IPV4_TCP
2669 | IXGBE_MRQC_RSS_FIELD_IPV6
2670 | IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
2671
2672 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
0cefafad
JB		 2673}
2674
bb5a9ad2
NS		 2675/**
2676 * ixgbe_configure_rscctl - enable RSC for the indicated ring
2677 * @adapter: address of board private structure
2678 * @index: index of ring to set
bb5a9ad2 2679 **/
7367096a
AD		 2680static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter,
2681 struct ixgbe_ring *ring)
bb5a9ad2 2682{
bb5a9ad2 2683 struct ixgbe_hw *hw = &adapter->hw;
bb5a9ad2 2684 u32 rscctrl;
edd2ea55 2685 int rx_buf_len;
7367096a
AD		 2686 u16 reg_idx = ring->reg_idx;
2687
2688 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
2689 return;
bb5a9ad2 2690
7367096a
AD		 2691 rx_buf_len = ring->rx_buf_len;
2692 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx));
bb5a9ad2
NS		 2693 rscctrl |= IXGBE_RSCCTL_RSCEN;
2694 /*
2695 * we must limit the number of descriptors so that the
2696 * total size of max desc * buf_len is not greater
2697 * than 65535
2698 */
7367096a 2699 if (ring->flags & IXGBE_RING_RX_PS_ENABLED) {
bb5a9ad2
NS		 2700#if (MAX_SKB_FRAGS > 16)
2701 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
2702#elif (MAX_SKB_FRAGS > 8)
2703 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
2704#elif (MAX_SKB_FRAGS > 4)
2705 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
2706#else
2707 rscctrl |= IXGBE_RSCCTL_MAXDESC_1;
2708#endif
2709 } else {
2710 if (rx_buf_len < IXGBE_RXBUFFER_4096)
2711 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
2712 else if (rx_buf_len < IXGBE_RXBUFFER_8192)
2713 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
2714 else
2715 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
2716 }
7367096a 2717 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl);
bb5a9ad2
NS		 2718}
2719
9e10e045
AD		 2720/**
2721 * ixgbe_set_uta - Set unicast filter table address
2722 * @adapter: board private structure
2723 *
2724 * The unicast table address is a register array of 32-bit registers.
2725 * The table is meant to be used in a way similar to how the MTA is used
2726 * however due to certain limitations in the hardware it is necessary to
2727 * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous
2728 * enable bit to allow vlan tag stripping when promiscuous mode is enabled
2729 **/
2730static void ixgbe_set_uta(struct ixgbe_adapter *adapter)
2731{
2732 struct ixgbe_hw *hw = &adapter->hw;
2733 int i;
2734
2735 /* The UTA table only exists on 82599 hardware and newer */
2736 if (hw->mac.type < ixgbe_mac_82599EB)
2737 return;
2738
2739 /* we only need to do this if VMDq is enabled */
2740 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
2741 return;
2742
2743 for (i = 0; i < 128; i++)
2744 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), ~0);
2745}
2746
2747#define IXGBE_MAX_RX_DESC_POLL 10
2748static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter,
2749 struct ixgbe_ring *ring)
2750{
2751 struct ixgbe_hw *hw = &adapter->hw;
2752 int reg_idx = ring->reg_idx;
2753 int wait_loop = IXGBE_MAX_RX_DESC_POLL;
2754 u32 rxdctl;
2755
2756 /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */
2757 if (hw->mac.type == ixgbe_mac_82598EB &&
2758 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
2759 return;
2760
2761 do {
2762 msleep(1);
2763 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
2764 } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE));
2765
2766 if (!wait_loop) {
2767 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within "
2768 "the polling period\n", reg_idx);
2769 }
2770}
2771
84418e3b
AD		 2772void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
2773 struct ixgbe_ring *ring)
acd37177
AD		 2774{
2775 struct ixgbe_hw *hw = &adapter->hw;
2776 u64 rdba = ring->dma;
9e10e045 2777 u32 rxdctl;
acd37177
AD		 2778 u16 reg_idx = ring->reg_idx;
2779
9e10e045
AD		 2780 /* disable queue to avoid issues while updating state */
2781 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
2782 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx),
2783 rxdctl & ~IXGBE_RXDCTL_ENABLE);
2784 IXGBE_WRITE_FLUSH(hw);
2785
acd37177
AD		 2786 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32)));
2787 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32));
2788 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx),
2789 ring->count * sizeof(union ixgbe_adv_rx_desc));
2790 IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0);
2791 IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0);
84ea2591 2792 ring->tail = hw->hw_addr + IXGBE_RDT(reg_idx);
9e10e045
AD		 2793
2794 ixgbe_configure_srrctl(adapter, ring);
2795 ixgbe_configure_rscctl(adapter, ring);
2796
2797 if (hw->mac.type == ixgbe_mac_82598EB) {
2798 /*
2799 * enable cache line friendly hardware writes:
2800 * PTHRESH=32 descriptors (half the internal cache),
2801 * this also removes ugly rx_no_buffer_count increment
2802 * HTHRESH=4 descriptors (to minimize latency on fetch)
2803 * WTHRESH=8 burst writeback up to two cache lines
2804 */
2805 rxdctl &= ~0x3FFFFF;
2806 rxdctl |= 0x080420;
2807 }
2808
2809 /* enable receive descriptor ring */
2810 rxdctl |= IXGBE_RXDCTL_ENABLE;
2811 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
2812
2813 ixgbe_rx_desc_queue_enable(adapter, ring);
2814 ixgbe_alloc_rx_buffers(adapter, ring, IXGBE_DESC_UNUSED(ring));
acd37177
AD		 2815}
2816
48654521
AD		 2817static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter)
2818{
2819 struct ixgbe_hw *hw = &adapter->hw;
2820 int p;
2821
2822 /* PSRTYPE must be initialized in non 82598 adapters */
2823 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
e8e9f696
JP		 2824 IXGBE_PSRTYPE_UDPHDR |
2825 IXGBE_PSRTYPE_IPV4HDR |
48654521 2826 IXGBE_PSRTYPE_L2HDR |
e8e9f696 2827 IXGBE_PSRTYPE_IPV6HDR;
48654521
AD		 2828
2829 if (hw->mac.type == ixgbe_mac_82598EB)
2830 return;
2831
2832 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED)
2833 psrtype |= (adapter->num_rx_queues_per_pool << 29);
2834
2835 for (p = 0; p < adapter->num_rx_pools; p++)
2836 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(adapter->num_vfs + p),
2837 psrtype);
2838}
2839
f5b4a52e
AD		 2840static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter)
2841{
2842 struct ixgbe_hw *hw = &adapter->hw;
2843 u32 gcr_ext;
2844 u32 vt_reg_bits;
2845 u32 reg_offset, vf_shift;
2846 u32 vmdctl;
2847
2848 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
2849 return;
2850
2851 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
2852 vt_reg_bits = IXGBE_VMD_CTL_VMDQ_EN | IXGBE_VT_CTL_REPLEN;
2853 vt_reg_bits |= (adapter->num_vfs << IXGBE_VT_CTL_POOL_SHIFT);
2854 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl | vt_reg_bits);
2855
2856 vf_shift = adapter->num_vfs % 32;
2857 reg_offset = (adapter->num_vfs > 32) ? 1 : 0;
2858
2859 /* Enable only the PF's pool for Tx/Rx */
2860 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), (1 << vf_shift));
2861 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), 0);
2862 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), (1 << vf_shift));
2863 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), 0);
2864 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
2865
2866 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */
2867 hw->mac.ops.set_vmdq(hw, 0, adapter->num_vfs);
2868
2869 /*
2870 * Set up VF register offsets for selected VT Mode,
2871 * i.e. 32 or 64 VFs for SR-IOV
2872 */
2873 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
2874 gcr_ext |= IXGBE_GCR_EXT_MSIX_EN;
2875 gcr_ext |= IXGBE_GCR_EXT_VT_MODE_64;
2876 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
2877
2878 /* enable Tx loopback for VF/PF communication */
2879 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
2880}
2881
477de6ed 2882static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter)
9a799d71 2883{
9a799d71
AK		 2884 struct ixgbe_hw *hw = &adapter->hw;
2885 struct net_device *netdev = adapter->netdev;
2886 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
7c6e0a43 2887 int rx_buf_len;
477de6ed
AD		 2888 struct ixgbe_ring *rx_ring;
2889 int i;
2890 u32 mhadd, hlreg0;
48654521 2891
9a799d71 2892 /* Decide whether to use packet split mode or not */
1cdd1ec8
GR		 2893 /* Do not use packet split if we're in SR-IOV Mode */
2894 if (!adapter->num_vfs)
2895 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
9a799d71
AK		 2896
2897 /* Set the RX buffer length according to the mode */
2898 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
7c6e0a43 2899 rx_buf_len = IXGBE_RX_HDR_SIZE;
9a799d71 2900 } else {
0c19d6af 2901 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
f8212f97 2902 (netdev->mtu <= ETH_DATA_LEN))
7c6e0a43 2903 rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
9a799d71 2904 else
477de6ed 2905 rx_buf_len = ALIGN(max_frame + VLAN_HLEN, 1024);
9a799d71
AK		 2906 }
2907
63f39bd1 2908#ifdef IXGBE_FCOE
477de6ed
AD		 2909 /* adjust max frame to be able to do baby jumbo for FCoE */
2910 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
2911 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE))
2912 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE;
9a799d71 2913
477de6ed
AD		 2914#endif /* IXGBE_FCOE */
2915 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD);
2916 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) {
2917 mhadd &= ~IXGBE_MHADD_MFS_MASK;
2918 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT;
2919
2920 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
2921 }
2922
2923 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
2924 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */
2925 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
2926 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
9a799d71 2927
0cefafad
JB		 2928 /*
2929 * Setup the HW Rx Head and Tail Descriptor Pointers and
2930 * the Base and Length of the Rx Descriptor Ring
2931 */
9a799d71 2932 for (i = 0; i < adapter->num_rx_queues; i++) {
4a0b9ca0 2933 rx_ring = adapter->rx_ring[i];
a6616b42 2934 rx_ring->rx_buf_len = rx_buf_len;
cc41ac7c 2935
6e455b89
YZ		 2936 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)
2937 rx_ring->flags |= IXGBE_RING_RX_PS_ENABLED;
1b3ff02e
PWJ		 2938 else
2939 rx_ring->flags &= ~IXGBE_RING_RX_PS_ENABLED;
cc41ac7c 2940
63f39bd1 2941#ifdef IXGBE_FCOE
e8e9f696 2942 if (netdev->features & NETIF_F_FCOE_MTU) {
63f39bd1
YZ		 2943 struct ixgbe_ring_feature *f;
2944 f = &adapter->ring_feature[RING_F_FCOE];
6e455b89
YZ		 2945 if ((i >= f->mask) && (i < f->mask + f->indices)) {
2946 rx_ring->flags &= ~IXGBE_RING_RX_PS_ENABLED;
2947 if (rx_buf_len < IXGBE_FCOE_JUMBO_FRAME_SIZE)
2948 rx_ring->rx_buf_len =
e8e9f696 2949 IXGBE_FCOE_JUMBO_FRAME_SIZE;
6e455b89 2950 }
63f39bd1 2951 }
63f39bd1 2952#endif /* IXGBE_FCOE */
477de6ed
AD		 2953 }
2954
2955}
2956
7367096a
AD		 2957static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter)
2958{
2959 struct ixgbe_hw *hw = &adapter->hw;
2960 u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
2961
2962 switch (hw->mac.type) {
2963 case ixgbe_mac_82598EB:
2964 /*
2965 * For VMDq support of different descriptor types or
2966 * buffer sizes through the use of multiple SRRCTL
2967 * registers, RDRXCTL.MVMEN must be set to 1
2968 *
2969 * also, the manual doesn't mention it clearly but DCA hints
2970 * will only use queue 0's tags unless this bit is set. Side
2971 * effects of setting this bit are only that SRRCTL must be
2972 * fully programmed [0..15]
2973 */
2974 rdrxctl |= IXGBE_RDRXCTL_MVMEN;
2975 break;
2976 case ixgbe_mac_82599EB:
2977 /* Disable RSC for ACK packets */
2978 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU,
2979 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU)));
2980 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
2981 /* hardware requires some bits to be set by default */
2982 rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX);
2983 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
2984 break;
2985 default:
2986 /* We should do nothing since we don't know this hardware */
2987 return;
2988 }
2989
2990 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
2991}
2992
477de6ed
AD		 2993/**
2994 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
2995 * @adapter: board private structure
2996 *
2997 * Configure the Rx unit of the MAC after a reset.
2998 **/
2999static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
3000{
3001 struct ixgbe_hw *hw = &adapter->hw;
477de6ed
AD		 3002 int i;
3003 u32 rxctrl;
477de6ed
AD		 3004
3005 /* disable receives while setting up the descriptors */
3006 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3007 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
3008
3009 ixgbe_setup_psrtype(adapter);
7367096a 3010 ixgbe_setup_rdrxctl(adapter);
477de6ed 3011
9e10e045 3012 /* Program registers for the distribution of queues */
f5b4a52e 3013 ixgbe_setup_mrqc(adapter);
f5b4a52e 3014
9e10e045
AD		 3015 ixgbe_set_uta(adapter);
3016
477de6ed
AD		 3017 /* set_rx_buffer_len must be called before ring initialization */
3018 ixgbe_set_rx_buffer_len(adapter);
3019
3020 /*
3021 * Setup the HW Rx Head and Tail Descriptor Pointers and
3022 * the Base and Length of the Rx Descriptor Ring
3023 */
9e10e045
AD		 3024 for (i = 0; i < adapter->num_rx_queues; i++)
3025 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]);
177db6ff 3026
9e10e045
AD		 3027 /* disable drop enable for 82598 parts */
3028 if (hw->mac.type == ixgbe_mac_82598EB)
3029 rxctrl |= IXGBE_RXCTRL_DMBYPS;
3030
3031 /* enable all receives */
3032 rxctrl |= IXGBE_RXCTRL_RXEN;
3033 hw->mac.ops.enable_rx_dma(hw, rxctrl);
9a799d71
AK		 3034}
3035
068c89b0
DS		 3036static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
3037{
3038 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3039 struct ixgbe_hw *hw = &adapter->hw;
1ada1b1b 3040 int pool_ndx = adapter->num_vfs;
068c89b0
DS		 3041
3042 /* add VID to filter table */
1ada1b1b 3043 hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, true);
f62bbb5e 3044 set_bit(vid, adapter->active_vlans);
068c89b0
DS		 3045}
3046
3047static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
3048{
3049 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3050 struct ixgbe_hw *hw = &adapter->hw;
1ada1b1b 3051 int pool_ndx = adapter->num_vfs;
068c89b0 3052
068c89b0 3053 /* remove VID from filter table */
1ada1b1b 3054 hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, false);
f62bbb5e 3055 clear_bit(vid, adapter->active_vlans);
068c89b0
DS		 3056}
3057
5f6c0181
JB		 3058/**
3059 * ixgbe_vlan_filter_disable - helper to disable hw vlan filtering
3060 * @adapter: driver data
3061 */
3062static void ixgbe_vlan_filter_disable(struct ixgbe_adapter *adapter)
3063{
3064 struct ixgbe_hw *hw = &adapter->hw;
f62bbb5e
JG		 3065 u32 vlnctrl;
3066
3067 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3068 vlnctrl &= ~(IXGBE_VLNCTRL_VFE | IXGBE_VLNCTRL_CFIEN);
3069 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3070}
3071
3072/**
3073 * ixgbe_vlan_filter_enable - helper to enable hw vlan filtering
3074 * @adapter: driver data
3075 */
3076static void ixgbe_vlan_filter_enable(struct ixgbe_adapter *adapter)
3077{
3078 struct ixgbe_hw *hw = &adapter->hw;
3079 u32 vlnctrl;
3080
3081 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3082 vlnctrl |= IXGBE_VLNCTRL_VFE;
3083 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
3084 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3085}
3086
3087/**
3088 * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping
3089 * @adapter: driver data
3090 */
3091static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter)
3092{
3093 struct ixgbe_hw *hw = &adapter->hw;
3094 u32 vlnctrl;
5f6c0181
JB		 3095 int i, j;
3096
3097 switch (hw->mac.type) {
3098 case ixgbe_mac_82598EB:
f62bbb5e
JG		 3099 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3100 vlnctrl &= ~IXGBE_VLNCTRL_VME;
5f6c0181
JB		 3101 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3102 break;
3103 case ixgbe_mac_82599EB:
5f6c0181
JB		 3104 for (i = 0; i < adapter->num_rx_queues; i++) {
3105 j = adapter->rx_ring[i]->reg_idx;
3106 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
3107 vlnctrl &= ~IXGBE_RXDCTL_VME;
3108 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
3109 }
3110 break;
3111 default:
3112 break;
3113 }
3114}
3115
3116/**
f62bbb5e 3117 * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping
5f6c0181
JB		 3118 * @adapter: driver data
3119 */
f62bbb5e 3120static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter)
5f6c0181
JB		 3121{
3122 struct ixgbe_hw *hw = &adapter->hw;
f62bbb5e 3123 u32 vlnctrl;
5f6c0181
JB		 3124 int i, j;
3125
3126 switch (hw->mac.type) {
3127 case ixgbe_mac_82598EB:
f62bbb5e
JG		 3128 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3129 vlnctrl |= IXGBE_VLNCTRL_VME;
5f6c0181
JB		 3130 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3131 break;
3132 case ixgbe_mac_82599EB:
5f6c0181
JB		 3133 for (i = 0; i < adapter->num_rx_queues; i++) {
3134 j = adapter->rx_ring[i]->reg_idx;
3135 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
3136 vlnctrl |= IXGBE_RXDCTL_VME;
3137 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
3138 }
3139 break;
3140 default:
3141 break;
3142 }
3143}
3144
9a799d71
AK		 3145static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
3146{
f62bbb5e 3147 u16 vid;
9a799d71 3148
f62bbb5e
JG		 3149 ixgbe_vlan_rx_add_vid(adapter->netdev, 0);
3150
3151 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
3152 ixgbe_vlan_rx_add_vid(adapter->netdev, vid);
9a799d71
AK		 3153}
3154
2850062a
AD		 3155/**
3156 * ixgbe_write_uc_addr_list - write unicast addresses to RAR table
3157 * @netdev: network interface device structure
3158 *
3159 * Writes unicast address list to the RAR table.
3160 * Returns: -ENOMEM on failure/insufficient address space
3161 * 0 on no addresses written
3162 * X on writing X addresses to the RAR table
3163 **/
3164static int ixgbe_write_uc_addr_list(struct net_device *netdev)
3165{
3166 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3167 struct ixgbe_hw *hw = &adapter->hw;
3168 unsigned int vfn = adapter->num_vfs;
3169 unsigned int rar_entries = hw->mac.num_rar_entries - (vfn + 1);
3170 int count = 0;
3171
3172 /* return ENOMEM indicating insufficient memory for addresses */
3173 if (netdev_uc_count(netdev) > rar_entries)
3174 return -ENOMEM;
3175
3176 if (!netdev_uc_empty(netdev) && rar_entries) {
3177 struct netdev_hw_addr *ha;
3178 /* return error if we do not support writing to RAR table */
3179 if (!hw->mac.ops.set_rar)
3180 return -ENOMEM;
3181
3182 netdev_for_each_uc_addr(ha, netdev) {
3183 if (!rar_entries)
3184 break;
3185 hw->mac.ops.set_rar(hw, rar_entries--, ha->addr,
3186 vfn, IXGBE_RAH_AV);
3187 count++;
3188 }
3189 }
3190 /* write the addresses in reverse order to avoid write combining */
3191 for (; rar_entries > 0 ; rar_entries--)
3192 hw->mac.ops.clear_rar(hw, rar_entries);
3193
3194 return count;
3195}
3196
9a799d71 3197/**
2c5645cf 3198 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
9a799d71
AK		 3199 * @netdev: network interface device structure
3200 *
2c5645cf
CL		 3201 * The set_rx_method entry point is called whenever the unicast/multicast
3202 * address list or the network interface flags are updated. This routine is
3203 * responsible for configuring the hardware for proper unicast, multicast and
3204 * promiscuous mode.
9a799d71 3205 **/
7f870475 3206void ixgbe_set_rx_mode(struct net_device *netdev)
9a799d71
AK		 3207{
3208 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3209 struct ixgbe_hw *hw = &adapter->hw;
2850062a
AD		 3210 u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE;
3211 int count;
9a799d71
AK		 3212
3213 /* Check for Promiscuous and All Multicast modes */
3214
3215 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
3216
f5dc442b
AD		 3217 /* set all bits that we expect to always be set */
3218 fctrl |= IXGBE_FCTRL_BAM;
3219 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
3220 fctrl |= IXGBE_FCTRL_PMCF;
3221
2850062a
AD		 3222 /* clear the bits we are changing the status of */
3223 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
3224
9a799d71 3225 if (netdev->flags & IFF_PROMISC) {
e433ea1f 3226 hw->addr_ctrl.user_set_promisc = true;
9a799d71 3227 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
2850062a 3228 vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_MPE);
5f6c0181
JB		 3229 /* don't hardware filter vlans in promisc mode */
3230 ixgbe_vlan_filter_disable(adapter);
9a799d71 3231 } else {
746b9f02
PM		 3232 if (netdev->flags & IFF_ALLMULTI) {
3233 fctrl |= IXGBE_FCTRL_MPE;
2850062a
AD		 3234 vmolr |= IXGBE_VMOLR_MPE;
3235 } else {
3236 /*
3237 * Write addresses to the MTA, if the attempt fails
3238 * then we should just turn on promiscous mode so
3239 * that we can at least receive multicast traffic
3240 */
3241 hw->mac.ops.update_mc_addr_list(hw, netdev);
3242 vmolr |= IXGBE_VMOLR_ROMPE;
746b9f02 3243 }
5f6c0181 3244 ixgbe_vlan_filter_enable(adapter);
e433ea1f 3245 hw->addr_ctrl.user_set_promisc = false;
2850062a
AD		 3246 /*
3247 * Write addresses to available RAR registers, if there is not
3248 * sufficient space to store all the addresses then enable
3249 * unicast promiscous mode
3250 */
3251 count = ixgbe_write_uc_addr_list(netdev);
3252 if (count < 0) {
3253 fctrl |= IXGBE_FCTRL_UPE;
3254 vmolr |= IXGBE_VMOLR_ROPE;
3255 }
9a799d71
AK		 3256 }
3257
2850062a 3258 if (adapter->num_vfs) {
1cdd1ec8 3259 ixgbe_restore_vf_multicasts(adapter);
2850062a
AD		 3260 vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(adapter->num_vfs)) &
3261 ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE |
3262 IXGBE_VMOLR_ROPE);
3263 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(adapter->num_vfs), vmolr);
3264 }
3265
3266 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
f62bbb5e
JG		 3267
3268 if (netdev->features & NETIF_F_HW_VLAN_RX)
3269 ixgbe_vlan_strip_enable(adapter);
3270 else
3271 ixgbe_vlan_strip_disable(adapter);
9a799d71
AK		 3272}
3273
021230d4
AV		 3274static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
3275{
3276 int q_idx;
3277 struct ixgbe_q_vector *q_vector;
3278 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
3279
3280 /* legacy and MSI only use one vector */
3281 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
3282 q_vectors = 1;
3283
3284 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
f0848276 3285 struct napi_struct *napi;
7a921c93 3286 q_vector = adapter->q_vector[q_idx];
f0848276 3287 napi = &q_vector->napi;
91281fd3
AD		 3288 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
3289 if (!q_vector->rxr_count || !q_vector->txr_count) {
3290 if (q_vector->txr_count == 1)
3291 napi->poll = &ixgbe_clean_txonly;
3292 else if (q_vector->rxr_count == 1)
3293 napi->poll = &ixgbe_clean_rxonly;
3294 }
3295 }
f0848276
JB		 3296
3297 napi_enable(napi);
021230d4
AV		 3298 }
3299}
3300
3301static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
3302{
3303 int q_idx;
3304 struct ixgbe_q_vector *q_vector;
3305 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
3306
3307 /* legacy and MSI only use one vector */
3308 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
3309 q_vectors = 1;
3310
3311 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
7a921c93 3312 q_vector = adapter->q_vector[q_idx];
021230d4
AV		 3313 napi_disable(&q_vector->napi);
3314 }
3315}
3316
7a6b6f51 3317#ifdef CONFIG_IXGBE_DCB
2f90b865
AD		 3318/*
3319 * ixgbe_configure_dcb - Configure DCB hardware
3320 * @adapter: ixgbe adapter struct
3321 *
3322 * This is called by the driver on open to configure the DCB hardware.
3323 * This is also called by the gennetlink interface when reconfiguring
3324 * the DCB state.
3325 */
3326static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
3327{
3328 struct ixgbe_hw *hw = &adapter->hw;
9806307a 3329 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
5f6c0181 3330 u32 txdctl;
2f90b865
AD		 3331 int i, j;
3332
67ebd791
AD		 3333 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) {
3334 if (hw->mac.type == ixgbe_mac_82598EB)
3335 netif_set_gso_max_size(adapter->netdev, 65536);
3336 return;
3337 }
3338
3339 if (hw->mac.type == ixgbe_mac_82598EB)
3340 netif_set_gso_max_size(adapter->netdev, 32768);
3341
9806307a
JF		 3342#ifdef CONFIG_FCOE
3343 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
3344 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
3345#endif
3346
80ab193d 3347 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
9806307a 3348 DCB_TX_CONFIG);
80ab193d 3349 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
9806307a 3350 DCB_RX_CONFIG);
2f90b865
AD		 3351
3352 /* reconfigure the hardware */
3353 ixgbe_dcb_hw_config(&adapter->hw, &adapter->dcb_cfg);
3354
3355 for (i = 0; i < adapter->num_tx_queues; i++) {
4a0b9ca0 3356 j = adapter->tx_ring[i]->reg_idx;
2f90b865
AD		 3357 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
3358 /* PThresh workaround for Tx hang with DFP enabled. */
3359 txdctl |= 32;
3360 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
3361 }
3362 /* Enable VLAN tag insert/strip */
f62bbb5e 3363 adapter->netdev->features |= NETIF_F_HW_VLAN_RX;
5f6c0181 3364
2f90b865
AD		 3365 hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true);
3366}
3367
3368#endif
9a799d71
AK		 3369static void ixgbe_configure(struct ixgbe_adapter *adapter)
3370{
3371 struct net_device *netdev = adapter->netdev;
c4cf55e5 3372 struct ixgbe_hw *hw = &adapter->hw;
9a799d71
AK		 3373 int i;
3374
7a6b6f51 3375#ifdef CONFIG_IXGBE_DCB
67ebd791 3376 ixgbe_configure_dcb(adapter);
2f90b865 3377#endif
9a799d71 3378
f62bbb5e
JG		 3379 ixgbe_set_rx_mode(netdev);
3380 ixgbe_restore_vlan(adapter);
3381
eacd73f7
YZ		 3382#ifdef IXGBE_FCOE
3383 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
3384 ixgbe_configure_fcoe(adapter);
3385
3386#endif /* IXGBE_FCOE */
c4cf55e5
PWJ		 3387 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
3388 for (i = 0; i < adapter->num_tx_queues; i++)
4a0b9ca0 3389 adapter->tx_ring[i]->atr_sample_rate =
e8e9f696 3390 adapter->atr_sample_rate;
c4cf55e5
PWJ		 3391 ixgbe_init_fdir_signature_82599(hw, adapter->fdir_pballoc);
3392 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
3393 ixgbe_init_fdir_perfect_82599(hw, adapter->fdir_pballoc);
3394 }
933d41f1 3395 ixgbe_configure_virtualization(adapter);
c4cf55e5 3396
9a799d71
AK		 3397 ixgbe_configure_tx(adapter);
3398 ixgbe_configure_rx(adapter);
9a799d71
AK		 3399}
3400
e8e26350
PW		 3401static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
3402{
3403 switch (hw->phy.type) {
3404 case ixgbe_phy_sfp_avago:
3405 case ixgbe_phy_sfp_ftl:
3406 case ixgbe_phy_sfp_intel:
3407 case ixgbe_phy_sfp_unknown:
ea0a04df
DS		 3408 case ixgbe_phy_sfp_passive_tyco:
3409 case ixgbe_phy_sfp_passive_unknown:
3410 case ixgbe_phy_sfp_active_unknown:
3411 case ixgbe_phy_sfp_ftl_active:
e8e26350
PW		 3412 return true;
3413 default:
3414 return false;
3415 }
3416}
3417
0ecc061d 3418/**
e8e26350
PW		 3419 * ixgbe_sfp_link_config - set up SFP+ link
3420 * @adapter: pointer to private adapter struct
3421 **/
3422static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter)
3423{
3424 struct ixgbe_hw *hw = &adapter->hw;
3425
3426 if (hw->phy.multispeed_fiber) {
3427 /*
3428 * In multispeed fiber setups, the device may not have
3429 * had a physical connection when the driver loaded.
3430 * If that's the case, the initial link configuration
3431 * couldn't get the MAC into 10G or 1G mode, so we'll
3432 * never have a link status change interrupt fire.
3433 * We need to try and force an autonegotiation
3434 * session, then bring up link.
3435 */
3436 hw->mac.ops.setup_sfp(hw);
3437 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK))
3438 schedule_work(&adapter->multispeed_fiber_task);
3439 } else {
3440 /*
3441 * Direct Attach Cu and non-multispeed fiber modules
3442 * still need to be configured properly prior to
3443 * attempting link.
3444 */
3445 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_MOD_TASK))
3446 schedule_work(&adapter->sfp_config_module_task);
3447 }
3448}
3449
3450/**
3451 * ixgbe_non_sfp_link_config - set up non-SFP+ link
0ecc061d
PWJ		 3452 * @hw: pointer to private hardware struct
3453 *
3454 * Returns 0 on success, negative on failure
3455 **/
e8e26350 3456static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw)
0ecc061d
PWJ		 3457{
3458 u32 autoneg;
8620a103 3459 bool negotiation, link_up = false;
0ecc061d
PWJ		 3460 u32 ret = IXGBE_ERR_LINK_SETUP;
3461
3462 if (hw->mac.ops.check_link)
3463 ret = hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
3464
3465 if (ret)
3466 goto link_cfg_out;
3467
3468 if (hw->mac.ops.get_link_capabilities)
e8e9f696
JP		 3469 ret = hw->mac.ops.get_link_capabilities(hw, &autoneg,
3470 &negotiation);
0ecc061d
PWJ		 3471 if (ret)
3472 goto link_cfg_out;
3473
8620a103
MC		 3474 if (hw->mac.ops.setup_link)
3475 ret = hw->mac.ops.setup_link(hw, autoneg, negotiation, link_up);
0ecc061d
PWJ		 3476link_cfg_out:
3477 return ret;
3478}
3479
a34bcfff 3480static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter)
9a799d71 3481{
9a799d71 3482 struct ixgbe_hw *hw = &adapter->hw;
a34bcfff 3483 u32 gpie = 0;
9a799d71 3484
9b471446 3485 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
a34bcfff
AD		 3486 gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT |
3487 IXGBE_GPIE_OCD;
3488 gpie |= IXGBE_GPIE_EIAME;
9b471446
JB		 3489 /*
3490 * use EIAM to auto-mask when MSI-X interrupt is asserted
3491 * this saves a register write for every interrupt
3492 */
3493 switch (hw->mac.type) {
3494 case ixgbe_mac_82598EB:
3495 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
3496 break;
3497 default:
3498 case ixgbe_mac_82599EB:
3499 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
3500 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
3501 break;
3502 }
3503 } else {
021230d4
AV		 3504 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
3505 * specifically only auto mask tx and rx interrupts */
3506 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
3507 }
9a799d71 3508
a34bcfff
AD		 3509 /* XXX: to interrupt immediately for EICS writes, enable this */
3510 /* gpie |= IXGBE_GPIE_EIMEN; */
3511
3512 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
3513 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
3514 gpie |= IXGBE_GPIE_VTMODE_64;
119fc60a
MC		 3515 }
3516
a34bcfff
AD		 3517 /* Enable fan failure interrupt */
3518 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
0befdb3e 3519 gpie |= IXGBE_SDP1_GPIEN;
0befdb3e 3520
a34bcfff 3521 if (hw->mac.type == ixgbe_mac_82599EB)
e8e26350
PW		 3522 gpie |= IXGBE_SDP1_GPIEN;
3523 gpie |= IXGBE_SDP2_GPIEN;
a34bcfff
AD		 3524
3525 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
3526}
3527
3528static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
3529{
3530 struct ixgbe_hw *hw = &adapter->hw;
a34bcfff 3531 int err;
a34bcfff
AD		 3532 u32 ctrl_ext;
3533
3534 ixgbe_get_hw_control(adapter);
3535 ixgbe_setup_gpie(adapter);
e8e26350 3536
9a799d71
AK		 3537 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
3538 ixgbe_configure_msix(adapter);
3539 else
3540 ixgbe_configure_msi_and_legacy(adapter);
3541
61fac744
PW		 3542 /* enable the optics */
3543 if (hw->phy.multispeed_fiber)
3544 hw->mac.ops.enable_tx_laser(hw);
3545
9a799d71 3546 clear_bit(__IXGBE_DOWN, &adapter->state);
021230d4
AV		 3547 ixgbe_napi_enable_all(adapter);
3548
3549 /* clear any pending interrupts, may auto mask */
3550 IXGBE_READ_REG(hw, IXGBE_EICR);
6af3b9eb 3551 ixgbe_irq_enable(adapter, true, true);
9a799d71 3552
bf069c97
DS		 3553 /*
3554 * If this adapter has a fan, check to see if we had a failure
3555 * before we enabled the interrupt.
3556 */
3557 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
3558 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
3559 if (esdp & IXGBE_ESDP_SDP1)
396e799c 3560 e_crit(drv, "Fan has stopped, replace the adapter\n");
bf069c97
DS		 3561 }
3562
e8e26350
PW		 3563 /*
3564 * For hot-pluggable SFP+ devices, a new SFP+ module may have
19343de2
DS		 3565 * arrived before interrupts were enabled but after probe. Such
3566 * devices wouldn't have their type identified yet. We need to
3567 * kick off the SFP+ module setup first, then try to bring up link.
e8e26350
PW		 3568 * If we're not hot-pluggable SFP+, we just need to configure link
3569 * and bring it up.
3570 */
19343de2
DS		 3571 if (hw->phy.type == ixgbe_phy_unknown) {
3572 err = hw->phy.ops.identify(hw);
3573 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
5da43c1a
DS		 3574 /*
3575 * Take the device down and schedule the sfp tasklet
3576 * which will unregister_netdev and log it.
3577 */
19343de2 3578 ixgbe_down(adapter);
5da43c1a 3579 schedule_work(&adapter->sfp_config_module_task);
19343de2
DS		 3580 return err;
3581 }
e8e26350
PW		 3582 }
3583
3584 if (ixgbe_is_sfp(hw)) {
3585 ixgbe_sfp_link_config(adapter);
3586 } else {
3587 err = ixgbe_non_sfp_link_config(hw);
3588 if (err)
396e799c 3589 e_err(probe, "link_config FAILED %d\n", err);
e8e26350 3590 }
0ecc061d 3591
1da100bb 3592 /* enable transmits */
477de6ed 3593 netif_tx_start_all_queues(adapter->netdev);
1da100bb 3594
9a799d71
AK		 3595 /* bring the link up in the watchdog, this could race with our first
3596 * link up interrupt but shouldn't be a problem */
cf8280ee
JB		 3597 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
3598 adapter->link_check_timeout = jiffies;
9a799d71 3599 mod_timer(&adapter->watchdog_timer, jiffies);
c9205697
GR		 3600
3601 /* Set PF Reset Done bit so PF/VF Mail Ops can work */
3602 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
3603 ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD;
3604 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
3605
9a799d71
AK		 3606 return 0;
3607}
3608
d4f80882
AV		 3609void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
3610{
3611 WARN_ON(in_interrupt());
3612 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
3613 msleep(1);
3614 ixgbe_down(adapter);
5809a1ae
GR		 3615 /*
3616 * If SR-IOV enabled then wait a bit before bringing the adapter
3617 * back up to give the VFs time to respond to the reset. The
3618 * two second wait is based upon the watchdog timer cycle in
3619 * the VF driver.
3620 */
3621 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
3622 msleep(2000);
d4f80882
AV		 3623 ixgbe_up(adapter);
3624 clear_bit(__IXGBE_RESETTING, &adapter->state);
3625}
3626
9a799d71
AK		 3627int ixgbe_up(struct ixgbe_adapter *adapter)
3628{
3629 /* hardware has been reset, we need to reload some things */
3630 ixgbe_configure(adapter);
3631
3632 return ixgbe_up_complete(adapter);
3633}
3634
3635void ixgbe_reset(struct ixgbe_adapter *adapter)
3636{
c44ade9e 3637 struct ixgbe_hw *hw = &adapter->hw;
8ca783ab
DS		 3638 int err;
3639
3640 err = hw->mac.ops.init_hw(hw);
da4dd0f7
PWJ		 3641 switch (err) {
3642 case 0:
3643 case IXGBE_ERR_SFP_NOT_PRESENT:
3644 break;
3645 case IXGBE_ERR_MASTER_REQUESTS_PENDING:
849c4542 3646 e_dev_err("master disable timed out\n");
da4dd0f7 3647 break;
794caeb2
PWJ		 3648 case IXGBE_ERR_EEPROM_VERSION:
3649 /* We are running on a pre-production device, log a warning */
849c4542
ET		 3650 e_dev_warn("This device is a pre-production adapter/LOM. "
3651 "Please be aware there may be issuesassociated with "
3652 "your hardware. If you are experiencing problems "
3653 "please contact your Intel or hardware "
3654 "representative who provided you with this "
3655 "hardware.\n");
794caeb2 3656 break;
da4dd0f7 3657 default:
849c4542 3658 e_dev_err("Hardware Error: %d\n", err);
da4dd0f7 3659 }
9a799d71
AK		 3660
3661 /* reprogram the RAR[0] in case user changed it. */
1cdd1ec8
GR		 3662 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
3663 IXGBE_RAH_AV);
9a799d71
AK		 3664}
3665
9a799d71
AK		 3666/**
3667 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
3668 * @adapter: board private structure
3669 * @rx_ring: ring to free buffers from
3670 **/
3671static void ixgbe_clean_rx_ring(struct ixgbe_adapter *adapter,
e8e9f696 3672 struct ixgbe_ring *rx_ring)
9a799d71
AK		 3673{
3674 struct pci_dev *pdev = adapter->pdev;
3675 unsigned long size;
3676 unsigned int i;
3677
84418e3b
AD		 3678 /* ring already cleared, nothing to do */
3679 if (!rx_ring->rx_buffer_info)
3680 return;
9a799d71 3681
84418e3b 3682 /* Free all the Rx ring sk_buffs */
9a799d71
AK		 3683 for (i = 0; i < rx_ring->count; i++) {
3684 struct ixgbe_rx_buffer *rx_buffer_info;
3685
3686 rx_buffer_info = &rx_ring->rx_buffer_info[i];
3687 if (rx_buffer_info->dma) {
1b507730 3688 dma_unmap_single(&pdev->dev, rx_buffer_info->dma,
e8e9f696 3689 rx_ring->rx_buf_len,
1b507730 3690 DMA_FROM_DEVICE);
9a799d71
AK		 3691 rx_buffer_info->dma = 0;
3692 }
3693 if (rx_buffer_info->skb) {
f8212f97 3694 struct sk_buff *skb = rx_buffer_info->skb;
9a799d71 3695 rx_buffer_info->skb = NULL;
f8212f97
AD		 3696 do {
3697 struct sk_buff *this = skb;
e8171aaa 3698 if (IXGBE_RSC_CB(this)->delay_unmap) {
1b507730
NN		 3699 dma_unmap_single(&pdev->dev,
3700 IXGBE_RSC_CB(this)->dma,
e8e9f696 3701 rx_ring->rx_buf_len,
1b507730 3702 DMA_FROM_DEVICE);
fd3686a8 3703 IXGBE_RSC_CB(this)->dma = 0;
e8171aaa 3704 IXGBE_RSC_CB(skb)->delay_unmap = false;
fd3686a8 3705 }
f8212f97
AD		 3706 skb = skb->prev;
3707 dev_kfree_skb(this);
3708 } while (skb);
9a799d71
AK		 3709 }
3710 if (!rx_buffer_info->page)
3711 continue;
4f57ca6e 3712 if (rx_buffer_info->page_dma) {
1b507730
NN		 3713 dma_unmap_page(&pdev->dev, rx_buffer_info->page_dma,
3714 PAGE_SIZE / 2, DMA_FROM_DEVICE);
4f57ca6e
JB		 3715 rx_buffer_info->page_dma = 0;
3716 }
9a799d71
AK		 3717 put_page(rx_buffer_info->page);
3718 rx_buffer_info->page = NULL;
762f4c57 3719 rx_buffer_info->page_offset = 0;
9a799d71
AK		 3720 }
3721
3722 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
3723 memset(rx_ring->rx_buffer_info, 0, size);
3724
3725 /* Zero out the descriptor ring */
3726 memset(rx_ring->desc, 0, rx_ring->size);
3727
3728 rx_ring->next_to_clean = 0;
3729 rx_ring->next_to_use = 0;
9a799d71
AK		 3730}
3731
3732/**
3733 * ixgbe_clean_tx_ring - Free Tx Buffers
3734 * @adapter: board private structure
3735 * @tx_ring: ring to be cleaned
3736 **/
3737static void ixgbe_clean_tx_ring(struct ixgbe_adapter *adapter,
e8e9f696 3738 struct ixgbe_ring *tx_ring)
9a799d71
AK		 3739{
3740 struct ixgbe_tx_buffer *tx_buffer_info;
3741 unsigned long size;
3742 unsigned int i;
3743
84418e3b
AD		 3744 /* ring already cleared, nothing to do */
3745 if (!tx_ring->tx_buffer_info)
3746 return;
9a799d71 3747
84418e3b 3748 /* Free all the Tx ring sk_buffs */
9a799d71
AK		 3749 for (i = 0; i < tx_ring->count; i++) {
3750 tx_buffer_info = &tx_ring->tx_buffer_info[i];
3751 ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info);
3752 }
3753
3754 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
3755 memset(tx_ring->tx_buffer_info, 0, size);
3756
3757 /* Zero out the descriptor ring */
3758 memset(tx_ring->desc, 0, tx_ring->size);
3759
3760 tx_ring->next_to_use = 0;
3761 tx_ring->next_to_clean = 0;
9a799d71
AK		 3762}
3763
3764/**
021230d4 3765 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
9a799d71
AK		 3766 * @adapter: board private structure
3767 **/
021230d4 3768static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter)
9a799d71
AK		 3769{
3770 int i;
3771
021230d4 3772 for (i = 0; i < adapter->num_rx_queues; i++)
4a0b9ca0 3773 ixgbe_clean_rx_ring(adapter, adapter->rx_ring[i]);
9a799d71
AK		 3774}
3775
3776/**
021230d4 3777 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
9a799d71
AK		 3778 * @adapter: board private structure
3779 **/
021230d4 3780static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
9a799d71
AK		 3781{
3782 int i;
3783
021230d4 3784 for (i = 0; i < adapter->num_tx_queues; i++)
4a0b9ca0 3785 ixgbe_clean_tx_ring(adapter, adapter->tx_ring[i]);
9a799d71
AK		 3786}
3787
3788void ixgbe_down(struct ixgbe_adapter *adapter)
3789{
3790 struct net_device *netdev = adapter->netdev;
7f821875 3791 struct ixgbe_hw *hw = &adapter->hw;
9a799d71 3792 u32 rxctrl;
7f821875
JB		 3793 u32 txdctl;
3794 int i, j;
b25ebfd2 3795 int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
9a799d71
AK		 3796
3797 /* signal that we are down to the interrupt handler */
3798 set_bit(__IXGBE_DOWN, &adapter->state);
3799
767081ad
GR		 3800 /* disable receive for all VFs and wait one second */
3801 if (adapter->num_vfs) {
767081ad
GR		 3802 /* ping all the active vfs to let them know we are going down */
3803 ixgbe_ping_all_vfs(adapter);
581d1aa7 3804
767081ad
GR		 3805 /* Disable all VFTE/VFRE TX/RX */
3806 ixgbe_disable_tx_rx(adapter);
581d1aa7
GR		 3807
3808 /* Mark all the VFs as inactive */
3809 for (i = 0 ; i < adapter->num_vfs; i++)
3810 adapter->vfinfo[i].clear_to_send = 0;
767081ad
GR		 3811 }
3812
9a799d71 3813 /* disable receives */
7f821875
JB		 3814 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3815 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
9a799d71 3816
7f821875 3817 IXGBE_WRITE_FLUSH(hw);
9a799d71
AK		 3818 msleep(10);
3819
7f821875
JB		 3820 netif_tx_stop_all_queues(netdev);
3821
0a1f87cb
DS		 3822 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
3823 del_timer_sync(&adapter->sfp_timer);
9a799d71 3824 del_timer_sync(&adapter->watchdog_timer);
cf8280ee 3825 cancel_work_sync(&adapter->watchdog_task);
9a799d71 3826
c0dfb90e
JF		 3827 netif_carrier_off(netdev);
3828 netif_tx_disable(netdev);
3829
3830 ixgbe_irq_disable(adapter);
3831
3832 ixgbe_napi_disable_all(adapter);
3833
b25ebfd2
PW		 3834 /* Cleanup the affinity_hint CPU mask memory and callback */
3835 for (i = 0; i < num_q_vectors; i++) {
3836 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
3837 /* clear the affinity_mask in the IRQ descriptor */
3838 irq_set_affinity_hint(adapter->msix_entries[i]. vector, NULL);
3839 /* release the CPU mask memory */
3840 free_cpumask_var(q_vector->affinity_mask);
3841 }
3842
c4cf55e5
PWJ		 3843 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
3844 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
3845 cancel_work_sync(&adapter->fdir_reinit_task);
3846
119fc60a
MC		 3847 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
3848 cancel_work_sync(&adapter->check_overtemp_task);
3849
7f821875
JB		 3850 /* disable transmits in the hardware now that interrupts are off */
3851 for (i = 0; i < adapter->num_tx_queues; i++) {
4a0b9ca0 3852 j = adapter->tx_ring[i]->reg_idx;
7f821875
JB		 3853 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
3854 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j),
e8e9f696 3855 (txdctl & ~IXGBE_TXDCTL_ENABLE));
7f821875 3856 }
88512539
PW		 3857 /* Disable the Tx DMA engine on 82599 */
3858 if (hw->mac.type == ixgbe_mac_82599EB)
3859 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL,
e8e9f696
JP		 3860 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
3861 ~IXGBE_DMATXCTL_TE));
7f821875 3862
9f756f01
JF		 3863 /* power down the optics */
3864 if (hw->phy.multispeed_fiber)
3865 hw->mac.ops.disable_tx_laser(hw);
3866
9a713e7c
PW		 3867 /* clear n-tuple filters that are cached */
3868 ethtool_ntuple_flush(netdev);
3869
6f4a0e45
PL		 3870 if (!pci_channel_offline(adapter->pdev))
3871 ixgbe_reset(adapter);
9a799d71
AK		 3872 ixgbe_clean_all_tx_rings(adapter);
3873 ixgbe_clean_all_rx_rings(adapter);
3874
5dd2d332 3875#ifdef CONFIG_IXGBE_DCA
96b0e0f6 3876 /* since we reset the hardware DCA settings were cleared */
e35ec126 3877 ixgbe_setup_dca(adapter);
96b0e0f6 3878#endif
9a799d71
AK		 3879}
3880
9a799d71 3881/**
021230d4
AV		 3882 * ixgbe_poll - NAPI Rx polling callback
3883 * @napi: structure for representing this polling device
3884 * @budget: how many packets driver is allowed to clean
3885 *
3886 * This function is used for legacy and MSI, NAPI mode
9a799d71 3887 **/
021230d4 3888static int ixgbe_poll(struct napi_struct *napi, int budget)
9a799d71 3889{
9a1a69ad 3890 struct ixgbe_q_vector *q_vector =
e8e9f696 3891 container_of(napi, struct ixgbe_q_vector, napi);
021230d4 3892 struct ixgbe_adapter *adapter = q_vector->adapter;
9a1a69ad 3893 int tx_clean_complete, work_done = 0;
9a799d71 3894
5dd2d332 3895#ifdef CONFIG_IXGBE_DCA
bd0362dd 3896 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
4a0b9ca0
PW		 3897 ixgbe_update_tx_dca(adapter, adapter->tx_ring[0]);
3898 ixgbe_update_rx_dca(adapter, adapter->rx_ring[0]);
bd0362dd
JC		 3899 }
3900#endif
3901
4a0b9ca0
PW		 3902 tx_clean_complete = ixgbe_clean_tx_irq(q_vector, adapter->tx_ring[0]);
3903 ixgbe_clean_rx_irq(q_vector, adapter->rx_ring[0], &work_done, budget);
9a799d71 3904
9a1a69ad 3905 if (!tx_clean_complete)
d2c7ddd6
DM		 3906 work_done = budget;
3907
53e52c72
DM		 3908 /* If budget not fully consumed, exit the polling mode */
3909 if (work_done < budget) {
288379f0 3910 napi_complete(napi);
f7554a2b 3911 if (adapter->rx_itr_setting & 1)
f494e8fa 3912 ixgbe_set_itr(adapter);
d4f80882 3913 if (!test_bit(__IXGBE_DOWN, &adapter->state))
835462fc 3914 ixgbe_irq_enable_queues(adapter, IXGBE_EIMS_RTX_QUEUE);
9a799d71 3915 }
9a799d71
AK		 3916 return work_done;
3917}
3918
3919/**
3920 * ixgbe_tx_timeout - Respond to a Tx Hang
3921 * @netdev: network interface device structure
3922 **/
3923static void ixgbe_tx_timeout(struct net_device *netdev)
3924{
3925 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3926
3927 /* Do the reset outside of interrupt context */
3928 schedule_work(&adapter->reset_task);
3929}
3930
3931static void ixgbe_reset_task(struct work_struct *work)
3932{
3933 struct ixgbe_adapter *adapter;
3934 adapter = container_of(work, struct ixgbe_adapter, reset_task);
3935
2f90b865
AD		 3936 /* If we're already down or resetting, just bail */
3937 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
3938 test_bit(__IXGBE_RESETTING, &adapter->state))
3939 return;
3940
9a799d71
AK		 3941 adapter->tx_timeout_count++;
3942
dcd79aeb
TI		 3943 ixgbe_dump(adapter);
3944 netdev_err(adapter->netdev, "Reset adapter\n");
d4f80882 3945 ixgbe_reinit_locked(adapter);
9a799d71
AK		 3946}
3947
bc97114d
PWJ		 3948#ifdef CONFIG_IXGBE_DCB
3949static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter)
b9804972 3950{
bc97114d 3951 bool ret = false;
0cefafad 3952 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_DCB];
b9804972 3953
0cefafad
JB		 3954 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
3955 return ret;
3956
3957 f->mask = 0x7 << 3;
3958 adapter->num_rx_queues = f->indices;
3959 adapter->num_tx_queues = f->indices;
3960 ret = true;
2f90b865 3961
bc97114d
PWJ		 3962 return ret;
3963}
3964#endif
3965
4df10466
JB		 3966/**
3967 * ixgbe_set_rss_queues: Allocate queues for RSS
3968 * @adapter: board private structure to initialize
3969 *
3970 * This is our "base" multiqueue mode. RSS (Receive Side Scaling) will try
3971 * to allocate one Rx queue per CPU, and if available, one Tx queue per CPU.
3972 *
3973 **/
bc97114d
PWJ		 3974static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter)
3975{
3976 bool ret = false;
0cefafad 3977 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_RSS];
bc97114d
PWJ		 3978
3979 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
0cefafad
JB		 3980 f->mask = 0xF;
3981 adapter->num_rx_queues = f->indices;
3982 adapter->num_tx_queues = f->indices;
bc97114d
PWJ		 3983 ret = true;
3984 } else {
bc97114d 3985 ret = false;
b9804972
JB		 3986 }
3987
bc97114d
PWJ		 3988 return ret;
3989}
3990
c4cf55e5
PWJ		 3991/**
3992 * ixgbe_set_fdir_queues: Allocate queues for Flow Director
3993 * @adapter: board private structure to initialize
3994 *
3995 * Flow Director is an advanced Rx filter, attempting to get Rx flows back
3996 * to the original CPU that initiated the Tx session. This runs in addition
3997 * to RSS, so if a packet doesn't match an FDIR filter, we can still spread the
3998 * Rx load across CPUs using RSS.
3999 *
4000 **/
e8e9f696 4001static inline bool ixgbe_set_fdir_queues(struct ixgbe_adapter *adapter)
c4cf55e5
PWJ		 4002{
4003 bool ret = false;
4004 struct ixgbe_ring_feature *f_fdir = &adapter->ring_feature[RING_F_FDIR];
4005
4006 f_fdir->indices = min((int)num_online_cpus(), f_fdir->indices);
4007 f_fdir->mask = 0;
4008
4009 /* Flow Director must have RSS enabled */
4010 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
4011 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
4012 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)))) {
4013 adapter->num_tx_queues = f_fdir->indices;
4014 adapter->num_rx_queues = f_fdir->indices;
4015 ret = true;
4016 } else {
4017 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
4018 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4019 }
4020 return ret;
4021}
4022
0331a832
YZ		 4023#ifdef IXGBE_FCOE
4024/**
4025 * ixgbe_set_fcoe_queues: Allocate queues for Fiber Channel over Ethernet (FCoE)
4026 * @adapter: board private structure to initialize
4027 *
4028 * FCoE RX FCRETA can use up to 8 rx queues for up to 8 different exchanges.
4029 * The ring feature mask is not used as a mask for FCoE, as it can take any 8
4030 * rx queues out of the max number of rx queues, instead, it is used as the
4031 * index of the first rx queue used by FCoE.
4032 *
4033 **/
4034static inline bool ixgbe_set_fcoe_queues(struct ixgbe_adapter *adapter)
4035{
4036 bool ret = false;
4037 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
4038
4039 f->indices = min((int)num_online_cpus(), f->indices);
4040 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
8de8b2e6
YZ		 4041 adapter->num_rx_queues = 1;
4042 adapter->num_tx_queues = 1;
0331a832
YZ		 4043#ifdef CONFIG_IXGBE_DCB
4044 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
396e799c 4045 e_info(probe, "FCoE enabled with DCB\n");
0331a832
YZ		 4046 ixgbe_set_dcb_queues(adapter);
4047 }
4048#endif
4049 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
396e799c 4050 e_info(probe, "FCoE enabled with RSS\n");
8faa2a78
YZ		 4051 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4052 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
4053 ixgbe_set_fdir_queues(adapter);
4054 else
4055 ixgbe_set_rss_queues(adapter);
0331a832
YZ		 4056 }
4057 /* adding FCoE rx rings to the end */
4058 f->mask = adapter->num_rx_queues;
4059 adapter->num_rx_queues += f->indices;
8de8b2e6 4060 adapter->num_tx_queues += f->indices;
0331a832
YZ		 4061
4062 ret = true;
4063 }
4064
4065 return ret;
4066}
4067
4068#endif /* IXGBE_FCOE */
1cdd1ec8
GR		 4069/**
4070 * ixgbe_set_sriov_queues: Allocate queues for IOV use
4071 * @adapter: board private structure to initialize
4072 *
4073 * IOV doesn't actually use anything, so just NAK the
4074 * request for now and let the other queue routines
4075 * figure out what to do.
4076 */
4077static inline bool ixgbe_set_sriov_queues(struct ixgbe_adapter *adapter)
4078{
4079 return false;
4080}
4081
4df10466
JB		 4082/*
4083 * ixgbe_set_num_queues: Allocate queues for device, feature dependant
4084 * @adapter: board private structure to initialize
4085 *
4086 * This is the top level queue allocation routine. The order here is very
4087 * important, starting with the "most" number of features turned on at once,
4088 * and ending with the smallest set of features. This way large combinations
4089 * can be allocated if they're turned on, and smaller combinations are the
4090 * fallthrough conditions.
4091 *
4092 **/
847f53ff 4093static int ixgbe_set_num_queues(struct ixgbe_adapter *adapter)
bc97114d 4094{
1cdd1ec8
GR		 4095 /* Start with base case */
4096 adapter->num_rx_queues = 1;
4097 adapter->num_tx_queues = 1;
4098 adapter->num_rx_pools = adapter->num_rx_queues;
4099 adapter->num_rx_queues_per_pool = 1;
4100
4101 if (ixgbe_set_sriov_queues(adapter))
847f53ff 4102 goto done;
1cdd1ec8 4103
0331a832
YZ		 4104#ifdef IXGBE_FCOE
4105 if (ixgbe_set_fcoe_queues(adapter))
4106 goto done;
4107
4108#endif /* IXGBE_FCOE */
bc97114d
PWJ		 4109#ifdef CONFIG_IXGBE_DCB
4110 if (ixgbe_set_dcb_queues(adapter))
af22ab1b 4111 goto done;
bc97114d
PWJ		 4112
4113#endif
c4cf55e5
PWJ		 4114 if (ixgbe_set_fdir_queues(adapter))
4115 goto done;
4116
bc97114d 4117 if (ixgbe_set_rss_queues(adapter))
af22ab1b
WF		 4118 goto done;
4119
4120 /* fallback to base case */
4121 adapter->num_rx_queues = 1;
4122 adapter->num_tx_queues = 1;
4123
4124done:
847f53ff 4125 /* Notify the stack of the (possibly) reduced queue counts. */
f0796d5c 4126 netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues);
847f53ff
BH		 4127 return netif_set_real_num_rx_queues(adapter->netdev,
4128 adapter->num_rx_queues);
b9804972
JB		 4129}
4130
021230d4 4131static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter,
e8e9f696 4132 int vectors)
021230d4
AV		 4133{
4134 int err, vector_threshold;
4135
4136 /* We'll want at least 3 (vector_threshold):
4137 * 1) TxQ[0] Cleanup
4138 * 2) RxQ[0] Cleanup
4139 * 3) Other (Link Status Change, etc.)
4140 * 4) TCP Timer (optional)
4141 */
4142 vector_threshold = MIN_MSIX_COUNT;
4143
4144 /* The more we get, the more we will assign to Tx/Rx Cleanup
4145 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
4146 * Right now, we simply care about how many we'll get; we'll
4147 * set them up later while requesting irq's.
4148 */
4149 while (vectors >= vector_threshold) {
4150 err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
e8e9f696 4151 vectors);
021230d4
AV		 4152 if (!err) /* Success in acquiring all requested vectors. */
4153 break;
4154 else if (err < 0)
4155 vectors = 0; /* Nasty failure, quit now */
4156 else /* err == number of vectors we should try again with */
4157 vectors = err;
4158 }
4159
4160 if (vectors < vector_threshold) {
4161 /* Can't allocate enough MSI-X interrupts? Oh well.
4162 * This just means we'll go with either a single MSI
4163 * vector or fall back to legacy interrupts.
4164 */
849c4542
ET		 4165 netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev,
4166 "Unable to allocate MSI-X interrupts\n");
021230d4
AV		 4167 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
4168 kfree(adapter->msix_entries);
4169 adapter->msix_entries = NULL;
021230d4
AV		 4170 } else {
4171 adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */
eb7f139c
PWJ		 4172 /*
4173 * Adjust for only the vectors we'll use, which is minimum
4174 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
4175 * vectors we were allocated.
4176 */
4177 adapter->num_msix_vectors = min(vectors,
e8e9f696 4178 adapter->max_msix_q_vectors + NON_Q_VECTORS);
021230d4
AV		 4179 }
4180}
4181
021230d4 4182/**
bc97114d 4183 * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS
021230d4
AV		 4184 * @adapter: board private structure to initialize
4185 *
bc97114d
PWJ		 4186 * Cache the descriptor ring offsets for RSS to the assigned rings.
4187 *
021230d4 4188 **/
bc97114d 4189static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter)
021230d4 4190{
bc97114d
PWJ		 4191 int i;
4192 bool ret = false;
4193
4194 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
4195 for (i = 0; i < adapter->num_rx_queues; i++)
4a0b9ca0 4196 adapter->rx_ring[i]->reg_idx = i;
bc97114d 4197 for (i = 0; i < adapter->num_tx_queues; i++)
4a0b9ca0 4198 adapter->tx_ring[i]->reg_idx = i;
bc97114d
PWJ		 4199 ret = true;
4200 } else {
4201 ret = false;
4202 }
4203
4204 return ret;
4205}
4206
4207#ifdef CONFIG_IXGBE_DCB
4208/**
4209 * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB
4210 * @adapter: board private structure to initialize
4211 *
4212 * Cache the descriptor ring offsets for DCB to the assigned rings.
4213 *
4214 **/
4215static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter)
4216{
4217 int i;
4218 bool ret = false;
4219 int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
4220
4221 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
4222 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
2f90b865
AD		 4223 /* the number of queues is assumed to be symmetric */
4224 for (i = 0; i < dcb_i; i++) {
4a0b9ca0
PW		 4225 adapter->rx_ring[i]->reg_idx = i << 3;
4226 adapter->tx_ring[i]->reg_idx = i << 2;
2f90b865 4227 }
bc97114d 4228 ret = true;
e8e26350 4229 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
f92ef202
PW		 4230 if (dcb_i == 8) {
4231 /*
4232 * Tx TC0 starts at: descriptor queue 0
4233 * Tx TC1 starts at: descriptor queue 32
4234 * Tx TC2 starts at: descriptor queue 64
4235 * Tx TC3 starts at: descriptor queue 80
4236 * Tx TC4 starts at: descriptor queue 96
4237 * Tx TC5 starts at: descriptor queue 104
4238 * Tx TC6 starts at: descriptor queue 112
4239 * Tx TC7 starts at: descriptor queue 120
4240 *
4241 * Rx TC0-TC7 are offset by 16 queues each
4242 */
4243 for (i = 0; i < 3; i++) {
4a0b9ca0
PW		 4244 adapter->tx_ring[i]->reg_idx = i << 5;
4245 adapter->rx_ring[i]->reg_idx = i << 4;
f92ef202
PW		 4246 }
4247 for ( ; i < 5; i++) {
4a0b9ca0 4248 adapter->tx_ring[i]->reg_idx =
e8e9f696 4249 ((i + 2) << 4);
4a0b9ca0 4250 adapter->rx_ring[i]->reg_idx = i << 4;
f92ef202
PW		 4251 }
4252 for ( ; i < dcb_i; i++) {
4a0b9ca0 4253 adapter->tx_ring[i]->reg_idx =
e8e9f696 4254 ((i + 8) << 3);
4a0b9ca0 4255 adapter->rx_ring[i]->reg_idx = i << 4;
f92ef202
PW		 4256 }
4257
4258 ret = true;
4259 } else if (dcb_i == 4) {
4260 /*
4261 * Tx TC0 starts at: descriptor queue 0
4262 * Tx TC1 starts at: descriptor queue 64
4263 * Tx TC2 starts at: descriptor queue 96
4264 * Tx TC3 starts at: descriptor queue 112
4265 *
4266 * Rx TC0-TC3 are offset by 32 queues each
4267 */
4a0b9ca0
PW		 4268 adapter->tx_ring[0]->reg_idx = 0;
4269 adapter->tx_ring[1]->reg_idx = 64;
4270 adapter->tx_ring[2]->reg_idx = 96;
4271 adapter->tx_ring[3]->reg_idx = 112;
f92ef202 4272 for (i = 0 ; i < dcb_i; i++)
4a0b9ca0 4273 adapter->rx_ring[i]->reg_idx = i << 5;
f92ef202
PW		 4274
4275 ret = true;
4276 } else {
4277 ret = false;
e8e26350 4278 }
bc97114d
PWJ		 4279 } else {
4280 ret = false;
021230d4 4281 }
bc97114d
PWJ		 4282 } else {
4283 ret = false;
021230d4 4284 }
bc97114d
PWJ		 4285
4286 return ret;
4287}
4288#endif
4289
c4cf55e5
PWJ		 4290/**
4291 * ixgbe_cache_ring_fdir - Descriptor ring to register mapping for Flow Director
4292 * @adapter: board private structure to initialize
4293 *
4294 * Cache the descriptor ring offsets for Flow Director to the assigned rings.
4295 *
4296 **/
e8e9f696 4297static inline bool ixgbe_cache_ring_fdir(struct ixgbe_adapter *adapter)
c4cf55e5
PWJ		 4298{
4299 int i;
4300 bool ret = false;
4301
4302 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
4303 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4304 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))) {
4305 for (i = 0; i < adapter->num_rx_queues; i++)
4a0b9ca0 4306 adapter->rx_ring[i]->reg_idx = i;
c4cf55e5 4307 for (i = 0; i < adapter->num_tx_queues; i++)
4a0b9ca0 4308 adapter->tx_ring[i]->reg_idx = i;
c4cf55e5
PWJ		 4309 ret = true;
4310 }
4311
4312 return ret;
4313}
4314
0331a832
YZ		 4315#ifdef IXGBE_FCOE
4316/**
4317 * ixgbe_cache_ring_fcoe - Descriptor ring to register mapping for the FCoE
4318 * @adapter: board private structure to initialize
4319 *
4320 * Cache the descriptor ring offsets for FCoE mode to the assigned rings.
4321 *
4322 */
4323static inline bool ixgbe_cache_ring_fcoe(struct ixgbe_adapter *adapter)
4324{
8de8b2e6 4325 int i, fcoe_rx_i = 0, fcoe_tx_i = 0;
0331a832
YZ		 4326 bool ret = false;
4327 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
4328
4329 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
4330#ifdef CONFIG_IXGBE_DCB
4331 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
8de8b2e6
YZ		 4332 struct ixgbe_fcoe *fcoe = &adapter->fcoe;
4333
0331a832 4334 ixgbe_cache_ring_dcb(adapter);
8de8b2e6 4335 /* find out queues in TC for FCoE */
4a0b9ca0
PW		 4336 fcoe_rx_i = adapter->rx_ring[fcoe->tc]->reg_idx + 1;
4337 fcoe_tx_i = adapter->tx_ring[fcoe->tc]->reg_idx + 1;
8de8b2e6
YZ		 4338 /*
4339 * In 82599, the number of Tx queues for each traffic
4340 * class for both 8-TC and 4-TC modes are:
4341 * TCs : TC0 TC1 TC2 TC3 TC4 TC5 TC6 TC7
4342 * 8 TCs: 32 32 16 16 8 8 8 8
4343 * 4 TCs: 64 64 32 32
4344 * We have max 8 queues for FCoE, where 8 the is
4345 * FCoE redirection table size. If TC for FCoE is
4346 * less than or equal to TC3, we have enough queues
4347 * to add max of 8 queues for FCoE, so we start FCoE
4348 * tx descriptor from the next one, i.e., reg_idx + 1.
4349 * If TC for FCoE is above TC3, implying 8 TC mode,
4350 * and we need 8 for FCoE, we have to take all queues
4351 * in that traffic class for FCoE.
4352 */
4353 if ((f->indices == IXGBE_FCRETA_SIZE) && (fcoe->tc > 3))
4354 fcoe_tx_i--;
0331a832
YZ		 4355 }
4356#endif /* CONFIG_IXGBE_DCB */
4357 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
8faa2a78
YZ		 4358 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4359 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
4360 ixgbe_cache_ring_fdir(adapter);
4361 else
4362 ixgbe_cache_ring_rss(adapter);
4363
8de8b2e6
YZ		 4364 fcoe_rx_i = f->mask;
4365 fcoe_tx_i = f->mask;
4366 }
4367 for (i = 0; i < f->indices; i++, fcoe_rx_i++, fcoe_tx_i++) {
4a0b9ca0
PW		 4368 adapter->rx_ring[f->mask + i]->reg_idx = fcoe_rx_i;
4369 adapter->tx_ring[f->mask + i]->reg_idx = fcoe_tx_i;
0331a832 4370 }
0331a832
YZ		 4371 ret = true;
4372 }
4373 return ret;
4374}
4375
4376#endif /* IXGBE_FCOE */
1cdd1ec8
GR		 4377/**
4378 * ixgbe_cache_ring_sriov - Descriptor ring to register mapping for sriov
4379 * @adapter: board private structure to initialize
4380 *
4381 * SR-IOV doesn't use any descriptor rings but changes the default if
4382 * no other mapping is used.
4383 *
4384 */
4385static inline bool ixgbe_cache_ring_sriov(struct ixgbe_adapter *adapter)
4386{
4a0b9ca0
PW		 4387 adapter->rx_ring[0]->reg_idx = adapter->num_vfs * 2;
4388 adapter->tx_ring[0]->reg_idx = adapter->num_vfs * 2;
1cdd1ec8
GR		 4389 if (adapter->num_vfs)
4390 return true;
4391 else
4392 return false;
4393}
4394
bc97114d
PWJ		 4395/**
4396 * ixgbe_cache_ring_register - Descriptor ring to register mapping
4397 * @adapter: board private structure to initialize
4398 *
4399 * Once we know the feature-set enabled for the device, we'll cache
4400 * the register offset the descriptor ring is assigned to.
4401 *
4402 * Note, the order the various feature calls is important. It must start with
4403 * the "most" features enabled at the same time, then trickle down to the
4404 * least amount of features turned on at once.
4405 **/
4406static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter)
4407{
4408 /* start with default case */
4a0b9ca0
PW		 4409 adapter->rx_ring[0]->reg_idx = 0;
4410 adapter->tx_ring[0]->reg_idx = 0;
bc97114d 4411
1cdd1ec8
GR		 4412 if (ixgbe_cache_ring_sriov(adapter))
4413 return;
4414
0331a832
YZ		 4415#ifdef IXGBE_FCOE
4416 if (ixgbe_cache_ring_fcoe(adapter))
4417 return;
4418
4419#endif /* IXGBE_FCOE */
bc97114d
PWJ		 4420#ifdef CONFIG_IXGBE_DCB
4421 if (ixgbe_cache_ring_dcb(adapter))
4422 return;
4423
4424#endif
c4cf55e5
PWJ		 4425 if (ixgbe_cache_ring_fdir(adapter))
4426 return;
4427
bc97114d
PWJ		 4428 if (ixgbe_cache_ring_rss(adapter))
4429 return;
021230d4
AV		 4430}
4431
9a799d71
AK		 4432/**
4433 * ixgbe_alloc_queues - Allocate memory for all rings
4434 * @adapter: board private structure to initialize
4435 *
4436 * We allocate one ring per queue at run-time since we don't know the
4df10466
JB		 4437 * number of queues at compile-time. The polling_netdev array is
4438 * intended for Multiqueue, but should work fine with a single queue.
9a799d71 4439 **/
2f90b865 4440static int ixgbe_alloc_queues(struct ixgbe_adapter *adapter)
9a799d71
AK		 4441{
4442 int i;
4a0b9ca0 4443 int orig_node = adapter->node;
9a799d71 4444
021230d4 4445 for (i = 0; i < adapter->num_tx_queues; i++) {
4a0b9ca0
PW		 4446 struct ixgbe_ring *ring = adapter->tx_ring[i];
4447 if (orig_node == -1) {
4448 int cur_node = next_online_node(adapter->node);
4449 if (cur_node == MAX_NUMNODES)
4450 cur_node = first_online_node;
4451 adapter->node = cur_node;
4452 }
4453 ring = kzalloc_node(sizeof(struct ixgbe_ring), GFP_KERNEL,
e8e9f696 4454 adapter->node);
4a0b9ca0
PW		 4455 if (!ring)
4456 ring = kzalloc(sizeof(struct ixgbe_ring), GFP_KERNEL);
4457 if (!ring)
4458 goto err_tx_ring_allocation;
4459 ring->count = adapter->tx_ring_count;
4460 ring->queue_index = i;
4461 ring->numa_node = adapter->node;
4462
4463 adapter->tx_ring[i] = ring;
021230d4 4464 }
b9804972 4465
4a0b9ca0
PW		 4466 /* Restore the adapter's original node */
4467 adapter->node = orig_node;
4468
9a799d71 4469 for (i = 0; i < adapter->num_rx_queues; i++) {
4a0b9ca0
PW		 4470 struct ixgbe_ring *ring = adapter->rx_ring[i];
4471 if (orig_node == -1) {
4472 int cur_node = next_online_node(adapter->node);
4473 if (cur_node == MAX_NUMNODES)
4474 cur_node = first_online_node;
4475 adapter->node = cur_node;
4476 }
4477 ring = kzalloc_node(sizeof(struct ixgbe_ring), GFP_KERNEL,
e8e9f696 4478 adapter->node);
4a0b9ca0
PW		 4479 if (!ring)
4480 ring = kzalloc(sizeof(struct ixgbe_ring), GFP_KERNEL);
4481 if (!ring)
4482 goto err_rx_ring_allocation;
4483 ring->count = adapter->rx_ring_count;
4484 ring->queue_index = i;
4485 ring->numa_node = adapter->node;
4486
4487 adapter->rx_ring[i] = ring;
021230d4
AV		 4488 }
4489
4a0b9ca0
PW		 4490 /* Restore the adapter's original node */
4491 adapter->node = orig_node;
4492
021230d4
AV		 4493 ixgbe_cache_ring_register(adapter);
4494
4495 return 0;
4496
4497err_rx_ring_allocation:
4a0b9ca0
PW		 4498 for (i = 0; i < adapter->num_tx_queues; i++)
4499 kfree(adapter->tx_ring[i]);
021230d4
AV		 4500err_tx_ring_allocation:
4501 return -ENOMEM;
4502}
4503
4504/**
4505 * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported
4506 * @adapter: board private structure to initialize
4507 *
4508 * Attempt to configure the interrupts using the best available
4509 * capabilities of the hardware and the kernel.
4510 **/
feea6a57 4511static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter)
021230d4 4512{
8be0e467 4513 struct ixgbe_hw *hw = &adapter->hw;
021230d4
AV		 4514 int err = 0;
4515 int vector, v_budget;
4516
4517 /*
4518 * It's easy to be greedy for MSI-X vectors, but it really
4519 * doesn't do us much good if we have a lot more vectors
4520 * than CPU's. So let's be conservative and only ask for
342bde1b 4521 * (roughly) the same number of vectors as there are CPU's.
021230d4
AV		 4522 */
4523 v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
e8e9f696 4524 (int)num_online_cpus()) + NON_Q_VECTORS;
021230d4
AV		 4525
4526 /*
4527 * At the same time, hardware can only support a maximum of
8be0e467
PW		 4528 * hw.mac->max_msix_vectors vectors. With features
4529 * such as RSS and VMDq, we can easily surpass the number of Rx and Tx
4530 * descriptor queues supported by our device. Thus, we cap it off in
4531 * those rare cases where the cpu count also exceeds our vector limit.
021230d4 4532 */
8be0e467 4533 v_budget = min(v_budget, (int)hw->mac.max_msix_vectors);
021230d4
AV		 4534
4535 /* A failure in MSI-X entry allocation isn't fatal, but it does
4536 * mean we disable MSI-X capabilities of the adapter. */
4537 adapter->msix_entries = kcalloc(v_budget,
e8e9f696 4538 sizeof(struct msix_entry), GFP_KERNEL);
7a921c93
AD		 4539 if (adapter->msix_entries) {
4540 for (vector = 0; vector < v_budget; vector++)
4541 adapter->msix_entries[vector].entry = vector;
021230d4 4542
7a921c93 4543 ixgbe_acquire_msix_vectors(adapter, v_budget);
021230d4 4544
7a921c93
AD		 4545 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
4546 goto out;
4547 }
26d27844 4548
7a921c93
AD		 4549 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
4550 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
c4cf55e5
PWJ		 4551 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
4552 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4553 adapter->atr_sample_rate = 0;
1cdd1ec8
GR		 4554 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
4555 ixgbe_disable_sriov(adapter);
4556
847f53ff
BH		 4557 err = ixgbe_set_num_queues(adapter);
4558 if (err)
4559 return err;
021230d4 4560
021230d4
AV		 4561 err = pci_enable_msi(adapter->pdev);
4562 if (!err) {
4563 adapter->flags |= IXGBE_FLAG_MSI_ENABLED;
4564 } else {
849c4542
ET		 4565 netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev,
4566 "Unable to allocate MSI interrupt, "
4567 "falling back to legacy. Error: %d\n", err);
021230d4
AV		 4568 /* reset err */
4569 err = 0;
4570 }
4571
4572out:
021230d4
AV		 4573 return err;
4574}
4575
7a921c93
AD		 4576/**
4577 * ixgbe_alloc_q_vectors - Allocate memory for interrupt vectors
4578 * @adapter: board private structure to initialize
4579 *
4580 * We allocate one q_vector per queue interrupt. If allocation fails we
4581 * return -ENOMEM.
4582 **/
4583static int ixgbe_alloc_q_vectors(struct ixgbe_adapter *adapter)
4584{
4585 int q_idx, num_q_vectors;
4586 struct ixgbe_q_vector *q_vector;
4587 int napi_vectors;
4588 int (*poll)(struct napi_struct *, int);
4589
4590 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
4591 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
4592 napi_vectors = adapter->num_rx_queues;
91281fd3 4593 poll = &ixgbe_clean_rxtx_many;
7a921c93
AD		 4594 } else {
4595 num_q_vectors = 1;
4596 napi_vectors = 1;
4597 poll = &ixgbe_poll;
4598 }
4599
4600 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
1a6c14a2 4601 q_vector = kzalloc_node(sizeof(struct ixgbe_q_vector),
e8e9f696 4602 GFP_KERNEL, adapter->node);
1a6c14a2
JB		 4603 if (!q_vector)
4604 q_vector = kzalloc(sizeof(struct ixgbe_q_vector),
e8e9f696 4605 GFP_KERNEL);
7a921c93
AD		 4606 if (!q_vector)
4607 goto err_out;
4608 q_vector->adapter = adapter;
f7554a2b
NS		 4609 if (q_vector->txr_count && !q_vector->rxr_count)
4610 q_vector->eitr = adapter->tx_eitr_param;
4611 else
4612 q_vector->eitr = adapter->rx_eitr_param;
fe49f04a 4613 q_vector->v_idx = q_idx;
91281fd3 4614 netif_napi_add(adapter->netdev, &q_vector->napi, (*poll), 64);
7a921c93
AD		 4615 adapter->q_vector[q_idx] = q_vector;
4616 }
4617
4618 return 0;
4619
4620err_out:
4621 while (q_idx) {
4622 q_idx--;
4623 q_vector = adapter->q_vector[q_idx];
4624 netif_napi_del(&q_vector->napi);
4625 kfree(q_vector);
4626 adapter->q_vector[q_idx] = NULL;
4627 }
4628 return -ENOMEM;
4629}
4630
4631/**
4632 * ixgbe_free_q_vectors - Free memory allocated for interrupt vectors
4633 * @adapter: board private structure to initialize
4634 *
4635 * This function frees the memory allocated to the q_vectors. In addition if
4636 * NAPI is enabled it will delete any references to the NAPI struct prior
4637 * to freeing the q_vector.
4638 **/
4639static void ixgbe_free_q_vectors(struct ixgbe_adapter *adapter)
4640{
4641 int q_idx, num_q_vectors;
7a921c93 4642
91281fd3 4643 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
7a921c93 4644 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
91281fd3 4645 else
7a921c93 4646 num_q_vectors = 1;
7a921c93
AD		 4647
4648 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
4649 struct ixgbe_q_vector *q_vector = adapter->q_vector[q_idx];
7a921c93 4650 adapter->q_vector[q_idx] = NULL;
91281fd3 4651 netif_napi_del(&q_vector->napi);
7a921c93
AD		 4652 kfree(q_vector);
4653 }
4654}
4655
7b25cdba 4656static void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter)
021230d4
AV		 4657{
4658 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
4659 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
4660 pci_disable_msix(adapter->pdev);
4661 kfree(adapter->msix_entries);
4662 adapter->msix_entries = NULL;
4663 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
4664 adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED;
4665 pci_disable_msi(adapter->pdev);
4666 }
021230d4
AV		 4667}
4668
4669/**
4670 * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme
4671 * @adapter: board private structure to initialize
4672 *
4673 * We determine which interrupt scheme to use based on...
4674 * - Kernel support (MSI, MSI-X)
4675 * - which can be user-defined (via MODULE_PARAM)
4676 * - Hardware queue count (num_*_queues)
4677 * - defined by miscellaneous hardware support/features (RSS, etc.)
4678 **/
2f90b865 4679int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter)
021230d4
AV		 4680{
4681 int err;
4682
4683 /* Number of supported queues */
847f53ff
BH		 4684 err = ixgbe_set_num_queues(adapter);
4685 if (err)
4686 return err;
021230d4 4687
021230d4
AV		 4688 err = ixgbe_set_interrupt_capability(adapter);
4689 if (err) {
849c4542 4690 e_dev_err("Unable to setup interrupt capabilities\n");
021230d4 4691 goto err_set_interrupt;
9a799d71
AK		 4692 }
4693
7a921c93
AD		 4694 err = ixgbe_alloc_q_vectors(adapter);
4695 if (err) {
849c4542 4696 e_dev_err("Unable to allocate memory for queue vectors\n");
7a921c93
AD		 4697 goto err_alloc_q_vectors;
4698 }
4699
4700 err = ixgbe_alloc_queues(adapter);
4701 if (err) {
849c4542 4702 e_dev_err("Unable to allocate memory for queues\n");
7a921c93
AD		 4703 goto err_alloc_queues;
4704 }
4705
849c4542 4706 e_dev_info("Multiqueue %s: Rx Queue count = %u, Tx Queue count = %u\n",
396e799c
ET		 4707 (adapter->num_rx_queues > 1) ? "Enabled" : "Disabled",
4708 adapter->num_rx_queues, adapter->num_tx_queues);
021230d4
AV		 4709
4710 set_bit(__IXGBE_DOWN, &adapter->state);
4711
9a799d71 4712 return 0;
021230d4 4713
7a921c93
AD		 4714err_alloc_queues:
4715 ixgbe_free_q_vectors(adapter);
4716err_alloc_q_vectors:
4717 ixgbe_reset_interrupt_capability(adapter);
021230d4 4718err_set_interrupt:
7a921c93
AD		 4719 return err;
4720}
4721
1a51502b
ED		 4722static void ring_free_rcu(struct rcu_head *head)
4723{
4724 kfree(container_of(head, struct ixgbe_ring, rcu));
4725}
4726
7a921c93
AD		 4727/**
4728 * ixgbe_clear_interrupt_scheme - Clear the current interrupt scheme settings
4729 * @adapter: board private structure to clear interrupt scheme on
4730 *
4731 * We go through and clear interrupt specific resources and reset the structure
4732 * to pre-load conditions
4733 **/
4734void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter *adapter)
4735{
4a0b9ca0
PW		 4736 int i;
4737
4738 for (i = 0; i < adapter->num_tx_queues; i++) {
4739 kfree(adapter->tx_ring[i]);
4740 adapter->tx_ring[i] = NULL;
4741 }
4742 for (i = 0; i < adapter->num_rx_queues; i++) {
1a51502b
ED		 4743 struct ixgbe_ring *ring = adapter->rx_ring[i];
4744
4745 /* ixgbe_get_stats64() might access this ring, we must wait
4746 * a grace period before freeing it.
4747 */
4748 call_rcu(&ring->rcu, ring_free_rcu);
4a0b9ca0
PW		 4749 adapter->rx_ring[i] = NULL;
4750 }
7a921c93
AD		 4751
4752 ixgbe_free_q_vectors(adapter);
4753 ixgbe_reset_interrupt_capability(adapter);
9a799d71
AK		 4754}
4755
c4900be0
DS		 4756/**
4757 * ixgbe_sfp_timer - worker thread to find a missing module
4758 * @data: pointer to our adapter struct
4759 **/
4760static void ixgbe_sfp_timer(unsigned long data)
4761{
4762 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
4763
4df10466
JB		 4764 /*
4765 * Do the sfp_timer outside of interrupt context due to the
c4900be0
DS		 4766 * delays that sfp+ detection requires
4767 */
4768 schedule_work(&adapter->sfp_task);
4769}
4770
4771/**
4772 * ixgbe_sfp_task - worker thread to find a missing module
4773 * @work: pointer to work_struct containing our data
4774 **/
4775static void ixgbe_sfp_task(struct work_struct *work)
4776{
4777 struct ixgbe_adapter *adapter = container_of(work,
e8e9f696
JP		 4778 struct ixgbe_adapter,
4779 sfp_task);
c4900be0
DS		 4780 struct ixgbe_hw *hw = &adapter->hw;
4781
4782 if ((hw->phy.type == ixgbe_phy_nl) &&
4783 (hw->phy.sfp_type == ixgbe_sfp_type_not_present)) {
4784 s32 ret = hw->phy.ops.identify_sfp(hw);
63d6e1d8 4785 if (ret == IXGBE_ERR_SFP_NOT_PRESENT)
c4900be0
DS		 4786 goto reschedule;
4787 ret = hw->phy.ops.reset(hw);
4788 if (ret == IXGBE_ERR_SFP_NOT_SUPPORTED) {
849c4542
ET		 4789 e_dev_err("failed to initialize because an unsupported "
4790 "SFP+ module type was detected.\n");
4791 e_dev_err("Reload the driver after installing a "
4792 "supported module.\n");
c4900be0
DS		 4793 unregister_netdev(adapter->netdev);
4794 } else {
396e799c 4795 e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type);
c4900be0
DS		 4796 }
4797 /* don't need this routine any more */
4798 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
4799 }
4800 return;
4801reschedule:
4802 if (test_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state))
4803 mod_timer(&adapter->sfp_timer,
e8e9f696 4804 round_jiffies(jiffies + (2 * HZ)));
c4900be0
DS		 4805}
4806
9a799d71
AK		 4807/**
4808 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
4809 * @adapter: board private structure to initialize
4810 *
4811 * ixgbe_sw_init initializes the Adapter private data structure.
4812 * Fields are initialized based on PCI device information and
4813 * OS network device settings (MTU size).
4814 **/
4815static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
4816{
4817 struct ixgbe_hw *hw = &adapter->hw;
4818 struct pci_dev *pdev = adapter->pdev;
9a713e7c 4819 struct net_device *dev = adapter->netdev;
021230d4 4820 unsigned int rss;
7a6b6f51 4821#ifdef CONFIG_IXGBE_DCB
2f90b865
AD		 4822 int j;
4823 struct tc_configuration *tc;
4824#endif
16b61beb 4825 int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
021230d4 4826
c44ade9e
JB		 4827 /* PCI config space info */
4828
4829 hw->vendor_id = pdev->vendor;
4830 hw->device_id = pdev->device;
4831 hw->revision_id = pdev->revision;
4832 hw->subsystem_vendor_id = pdev->subsystem_vendor;
4833 hw->subsystem_device_id = pdev->subsystem_device;
4834
021230d4
AV		 4835 /* Set capability flags */
4836 rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus());
4837 adapter->ring_feature[RING_F_RSS].indices = rss;
4838 adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
2f90b865 4839 adapter->ring_feature[RING_F_DCB].indices = IXGBE_MAX_DCB_INDICES;
bf069c97
DS		 4840 if (hw->mac.type == ixgbe_mac_82598EB) {
4841 if (hw->device_id == IXGBE_DEV_ID_82598AT)
4842 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE;
e8e26350 4843 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82598;
bf069c97 4844 } else if (hw->mac.type == ixgbe_mac_82599EB) {
e8e26350 4845 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599;
0c19d6af
PWJ		 4846 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
4847 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
119fc60a
MC		 4848 if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM)
4849 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
9a713e7c
PW		 4850 if (dev->features & NETIF_F_NTUPLE) {
4851 /* Flow Director perfect filter enabled */
4852 adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4853 adapter->atr_sample_rate = 0;
4854 spin_lock_init(&adapter->fdir_perfect_lock);
4855 } else {
4856 /* Flow Director hash filters enabled */
4857 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
4858 adapter->atr_sample_rate = 20;
4859 }
c4cf55e5 4860 adapter->ring_feature[RING_F_FDIR].indices =
e8e9f696 4861 IXGBE_MAX_FDIR_INDICES;
c4cf55e5 4862 adapter->fdir_pballoc = 0;
eacd73f7 4863#ifdef IXGBE_FCOE
0d551589
YZ		 4864 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
4865 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
4866 adapter->ring_feature[RING_F_FCOE].indices = 0;
61a0f421 4867#ifdef CONFIG_IXGBE_DCB
6ee16520
YZ		 4868 /* Default traffic class to use for FCoE */
4869 adapter->fcoe.tc = IXGBE_FCOE_DEFTC;
56075a98 4870 adapter->fcoe.up = IXGBE_FCOE_DEFTC;
61a0f421 4871#endif
eacd73f7 4872#endif /* IXGBE_FCOE */
f8212f97 4873 }
2f90b865 4874
7a6b6f51 4875#ifdef CONFIG_IXGBE_DCB
2f90b865
AD		 4876 /* Configure DCB traffic classes */
4877 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
4878 tc = &adapter->dcb_cfg.tc_config[j];
4879 tc->path[DCB_TX_CONFIG].bwg_id = 0;
4880 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1);
4881 tc->path[DCB_RX_CONFIG].bwg_id = 0;
4882 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1);
4883 tc->dcb_pfc = pfc_disabled;
4884 }
4885 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100;
4886 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100;
4887 adapter->dcb_cfg.rx_pba_cfg = pba_equal;
264857b8 4888 adapter->dcb_cfg.pfc_mode_enable = false;
2f90b865
AD		 4889 adapter->dcb_cfg.round_robin_enable = false;
4890 adapter->dcb_set_bitmap = 0x00;
4891 ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg,
e8e9f696 4892 adapter->ring_feature[RING_F_DCB].indices);
2f90b865
AD		 4893
4894#endif
9a799d71
AK		 4895
4896 /* default flow control settings */
cd7664f6 4897 hw->fc.requested_mode = ixgbe_fc_full;
71fd570b 4898 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */
264857b8
PWJ		 4899#ifdef CONFIG_DCB
4900 adapter->last_lfc_mode = hw->fc.current_mode;
4901#endif
16b61beb
JF		 4902 hw->fc.high_water = FC_HIGH_WATER(max_frame);
4903 hw->fc.low_water = FC_LOW_WATER(max_frame);
2b9ade93
JB		 4904 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
4905 hw->fc.send_xon = true;
71fd570b 4906 hw->fc.disable_fc_autoneg = false;
9a799d71 4907
30efa5a3 4908 /* enable itr by default in dynamic mode */
f7554a2b
NS		 4909 adapter->rx_itr_setting = 1;
4910 adapter->rx_eitr_param = 20000;
4911 adapter->tx_itr_setting = 1;
4912 adapter->tx_eitr_param = 10000;
30efa5a3
JB		 4913
4914 /* set defaults for eitr in MegaBytes */
4915 adapter->eitr_low = 10;
4916 adapter->eitr_high = 20;
4917
4918 /* set default ring sizes */
4919 adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
4920 adapter->rx_ring_count = IXGBE_DEFAULT_RXD;
4921
9a799d71 4922 /* initialize eeprom parameters */
c44ade9e 4923 if (ixgbe_init_eeprom_params_generic(hw)) {
849c4542 4924 e_dev_err("EEPROM initialization failed\n");
9a799d71
AK		 4925 return -EIO;
4926 }
4927
021230d4 4928 /* enable rx csum by default */
9a799d71
AK		 4929 adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
4930
1a6c14a2
JB		 4931 /* get assigned NUMA node */
4932 adapter->node = dev_to_node(&pdev->dev);
4933
9a799d71
AK		 4934 set_bit(__IXGBE_DOWN, &adapter->state);
4935
4936 return 0;
4937}
4938
4939/**
4940 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
4941 * @adapter: board private structure
3a581073 4942 * @tx_ring: tx descriptor ring (for a specific queue) to setup
9a799d71
AK		 4943 *
4944 * Return 0 on success, negative on failure
4945 **/
4946int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter,
e8e9f696 4947 struct ixgbe_ring *tx_ring)
9a799d71
AK		 4948{
4949 struct pci_dev *pdev = adapter->pdev;
4950 int size;
4951
3a581073 4952 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
4a0b9ca0 4953 tx_ring->tx_buffer_info = vmalloc_node(size, tx_ring->numa_node);
1a6c14a2
JB		 4954 if (!tx_ring->tx_buffer_info)
4955 tx_ring->tx_buffer_info = vmalloc(size);
e01c31a5
JB		 4956 if (!tx_ring->tx_buffer_info)
4957 goto err;
3a581073 4958 memset(tx_ring->tx_buffer_info, 0, size);
9a799d71
AK		 4959
4960 /* round up to nearest 4K */
12207e49 4961 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
3a581073 4962 tx_ring->size = ALIGN(tx_ring->size, 4096);
9a799d71 4963
1b507730
NN		 4964 tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
4965 &tx_ring->dma, GFP_KERNEL);
e01c31a5
JB		 4966 if (!tx_ring->desc)
4967 goto err;
9a799d71 4968
3a581073
JB		 4969 tx_ring->next_to_use = 0;
4970 tx_ring->next_to_clean = 0;
4971 tx_ring->work_limit = tx_ring->count;
9a799d71 4972 return 0;
e01c31a5
JB		 4973
4974err:
4975 vfree(tx_ring->tx_buffer_info);
4976 tx_ring->tx_buffer_info = NULL;
396e799c 4977 e_err(probe, "Unable to allocate memory for the Tx descriptor ring\n");
e01c31a5 4978 return -ENOMEM;
9a799d71
AK		 4979}
4980
69888674
AD		 4981/**
4982 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
4983 * @adapter: board private structure
4984 *
4985 * If this function returns with an error, then it's possible one or
4986 * more of the rings is populated (while the rest are not). It is the
4987 * callers duty to clean those orphaned rings.
4988 *
4989 * Return 0 on success, negative on failure
4990 **/
4991static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
4992{
4993 int i, err = 0;
4994
4995 for (i = 0; i < adapter->num_tx_queues; i++) {
4a0b9ca0 4996 err = ixgbe_setup_tx_resources(adapter, adapter->tx_ring[i]);
69888674
AD		 4997 if (!err)
4998 continue;
396e799c 4999 e_err(probe, "Allocation for Tx Queue %u failed\n", i);
69888674
AD		 5000 break;
5001 }
5002
5003 return err;
5004}
5005
9a799d71
AK		 5006/**
5007 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
5008 * @adapter: board private structure
3a581073 5009 * @rx_ring: rx descriptor ring (for a specific queue) to setup
9a799d71
AK		 5010 *
5011 * Returns 0 on success, negative on failure
5012 **/
5013int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter,
e8e9f696 5014 struct ixgbe_ring *rx_ring)
9a799d71
AK		 5015{
5016 struct pci_dev *pdev = adapter->pdev;
021230d4 5017 int size;
9a799d71 5018
3a581073 5019 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
1a6c14a2
JB		 5020 rx_ring->rx_buffer_info = vmalloc_node(size, adapter->node);
5021 if (!rx_ring->rx_buffer_info)
5022 rx_ring->rx_buffer_info = vmalloc(size);
3a581073 5023 if (!rx_ring->rx_buffer_info) {
396e799c
ET		 5024 e_err(probe, "vmalloc allocation failed for the Rx "
5025 "descriptor ring\n");
177db6ff 5026 goto alloc_failed;
9a799d71 5027 }
3a581073 5028 memset(rx_ring->rx_buffer_info, 0, size);
9a799d71 5029
9a799d71 5030 /* Round up to nearest 4K */
3a581073
JB		 5031 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
5032 rx_ring->size = ALIGN(rx_ring->size, 4096);
9a799d71 5033
1b507730
NN		 5034 rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
5035 &rx_ring->dma, GFP_KERNEL);
9a799d71 5036
3a581073 5037 if (!rx_ring->desc) {
396e799c
ET		 5038 e_err(probe, "Memory allocation failed for the Rx "
5039 "descriptor ring\n");
3a581073 5040 vfree(rx_ring->rx_buffer_info);
177db6ff 5041 goto alloc_failed;
9a799d71
AK		 5042 }
5043
3a581073
JB		 5044 rx_ring->next_to_clean = 0;
5045 rx_ring->next_to_use = 0;
9a799d71
AK		 5046
5047 return 0;
177db6ff
MC		 5048
5049alloc_failed:
177db6ff 5050 return -ENOMEM;
9a799d71
AK		 5051}
5052
69888674
AD		 5053/**
5054 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
5055 * @adapter: board private structure
5056 *
5057 * If this function returns with an error, then it's possible one or
5058 * more of the rings is populated (while the rest are not). It is the
5059 * callers duty to clean those orphaned rings.
5060 *
5061 * Return 0 on success, negative on failure
5062 **/
5063
5064static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
5065{
5066 int i, err = 0;
5067
5068 for (i = 0; i < adapter->num_rx_queues; i++) {
4a0b9ca0 5069 err = ixgbe_setup_rx_resources(adapter, adapter->rx_ring[i]);
69888674
AD		 5070 if (!err)
5071 continue;
396e799c 5072 e_err(probe, "Allocation for Rx Queue %u failed\n", i);
69888674
AD		 5073 break;
5074 }
5075
5076 return err;
5077}
5078
9a799d71
AK		 5079/**
5080 * ixgbe_free_tx_resources - Free Tx Resources per Queue
5081 * @adapter: board private structure
5082 * @tx_ring: Tx descriptor ring for a specific queue
5083 *
5084 * Free all transmit software resources
5085 **/
c431f97e 5086void ixgbe_free_tx_resources(struct ixgbe_adapter *adapter,
e8e9f696 5087 struct ixgbe_ring *tx_ring)
9a799d71
AK		 5088{
5089 struct pci_dev *pdev = adapter->pdev;
5090
5091 ixgbe_clean_tx_ring(adapter, tx_ring);
5092
5093 vfree(tx_ring->tx_buffer_info);
5094 tx_ring->tx_buffer_info = NULL;
5095
1b507730
NN		 5096 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
5097 tx_ring->dma);
9a799d71
AK		 5098
5099 tx_ring->desc = NULL;
5100}
5101
5102/**
5103 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
5104 * @adapter: board private structure
5105 *
5106 * Free all transmit software resources
5107 **/
5108static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter)
5109{
5110 int i;
5111
5112 for (i = 0; i < adapter->num_tx_queues; i++)
4a0b9ca0
PW		 5113 if (adapter->tx_ring[i]->desc)
5114 ixgbe_free_tx_resources(adapter, adapter->tx_ring[i]);
9a799d71
AK		 5115}
5116
5117/**
b4617240 5118 * ixgbe_free_rx_resources - Free Rx Resources
9a799d71
AK		 5119 * @adapter: board private structure
5120 * @rx_ring: ring to clean the resources from
5121 *
5122 * Free all receive software resources
5123 **/
c431f97e 5124void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter,
e8e9f696 5125 struct ixgbe_ring *rx_ring)
9a799d71
AK		 5126{
5127 struct pci_dev *pdev = adapter->pdev;
5128
5129 ixgbe_clean_rx_ring(adapter, rx_ring);
5130
5131 vfree(rx_ring->rx_buffer_info);
5132 rx_ring->rx_buffer_info = NULL;
5133
1b507730
NN		 5134 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
5135 rx_ring->dma);
9a799d71
AK		 5136
5137 rx_ring->desc = NULL;
5138}
5139
5140/**
5141 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
5142 * @adapter: board private structure
5143 *
5144 * Free all receive software resources
5145 **/
5146static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter)
5147{
5148 int i;
5149
5150 for (i = 0; i < adapter->num_rx_queues; i++)
4a0b9ca0
PW		 5151 if (adapter->rx_ring[i]->desc)
5152 ixgbe_free_rx_resources(adapter, adapter->rx_ring[i]);
9a799d71
AK		 5153}
5154
9a799d71
AK		 5155/**
5156 * ixgbe_change_mtu - Change the Maximum Transfer Unit
5157 * @netdev: network interface device structure
5158 * @new_mtu: new value for maximum frame size
5159 *
5160 * Returns 0 on success, negative on failure
5161 **/
5162static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
5163{
5164 struct ixgbe_adapter *adapter = netdev_priv(netdev);
16b61beb 5165 struct ixgbe_hw *hw = &adapter->hw;
9a799d71
AK		 5166 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
5167
42c783c5
JB		 5168 /* MTU < 68 is an error and causes problems on some kernels */
5169 if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
9a799d71
AK		 5170 return -EINVAL;
5171
396e799c 5172 e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu);
021230d4 5173 /* must set new MTU before calling down or up */
9a799d71
AK		 5174 netdev->mtu = new_mtu;
5175
16b61beb
JF		 5176 hw->fc.high_water = FC_HIGH_WATER(max_frame);
5177 hw->fc.low_water = FC_LOW_WATER(max_frame);
5178
d4f80882
AV		 5179 if (netif_running(netdev))
5180 ixgbe_reinit_locked(adapter);
9a799d71
AK		 5181
5182 return 0;
5183}
5184
5185/**
5186 * ixgbe_open - Called when a network interface is made active
5187 * @netdev: network interface device structure
5188 *
5189 * Returns 0 on success, negative value on failure
5190 *
5191 * The open entry point is called when a network interface is made
5192 * active by the system (IFF_UP). At this point all resources needed
5193 * for transmit and receive operations are allocated, the interrupt
5194 * handler is registered with the OS, the watchdog timer is started,
5195 * and the stack is notified that the interface is ready.
5196 **/
5197static int ixgbe_open(struct net_device *netdev)
5198{
5199 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5200 int err;
4bebfaa5
AK		 5201
5202 /* disallow open during test */
5203 if (test_bit(__IXGBE_TESTING, &adapter->state))
5204 return -EBUSY;
9a799d71 5205
54386467
JB		 5206 netif_carrier_off(netdev);
5207
9a799d71
AK		 5208 /* allocate transmit descriptors */
5209 err = ixgbe_setup_all_tx_resources(adapter);
5210 if (err)
5211 goto err_setup_tx;
5212
9a799d71
AK		 5213 /* allocate receive descriptors */
5214 err = ixgbe_setup_all_rx_resources(adapter);
5215 if (err)
5216 goto err_setup_rx;
5217
5218 ixgbe_configure(adapter);
5219
021230d4 5220 err = ixgbe_request_irq(adapter);
9a799d71
AK		 5221 if (err)
5222 goto err_req_irq;
5223
9a799d71
AK		 5224 err = ixgbe_up_complete(adapter);
5225 if (err)
5226 goto err_up;
5227
d55b53ff
JK		 5228 netif_tx_start_all_queues(netdev);
5229
9a799d71
AK		 5230 return 0;
5231
5232err_up:
5eba3699 5233 ixgbe_release_hw_control(adapter);
9a799d71
AK		 5234 ixgbe_free_irq(adapter);
5235err_req_irq:
9a799d71 5236err_setup_rx:
a20a1199 5237 ixgbe_free_all_rx_resources(adapter);
9a799d71 5238err_setup_tx:
a20a1199 5239 ixgbe_free_all_tx_resources(adapter);
9a799d71
AK		 5240 ixgbe_reset(adapter);
5241
5242 return err;
5243}
5244
5245/**
5246 * ixgbe_close - Disables a network interface
5247 * @netdev: network interface device structure
5248 *
5249 * Returns 0, this is not allowed to fail
5250 *
5251 * The close entry point is called when an interface is de-activated
5252 * by the OS. The hardware is still under the drivers control, but
5253 * needs to be disabled. A global MAC reset is issued to stop the
5254 * hardware, and all transmit and receive resources are freed.
5255 **/
5256static int ixgbe_close(struct net_device *netdev)
5257{
5258 struct ixgbe_adapter *adapter = netdev_priv(netdev);
9a799d71
AK		 5259
5260 ixgbe_down(adapter);
5261 ixgbe_free_irq(adapter);
5262
5263 ixgbe_free_all_tx_resources(adapter);
5264 ixgbe_free_all_rx_resources(adapter);
5265
5eba3699 5266 ixgbe_release_hw_control(adapter);
9a799d71
AK		 5267
5268 return 0;
5269}
5270
b3c8b4ba
AD		 5271#ifdef CONFIG_PM
5272static int ixgbe_resume(struct pci_dev *pdev)
5273{
5274 struct net_device *netdev = pci_get_drvdata(pdev);
5275 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5276 u32 err;
5277
5278 pci_set_power_state(pdev, PCI_D0);
5279 pci_restore_state(pdev);
656ab817
DS		 5280 /*
5281 * pci_restore_state clears dev->state_saved so call
5282 * pci_save_state to restore it.
5283 */
5284 pci_save_state(pdev);
9ce77666 5285
5286 err = pci_enable_device_mem(pdev);
b3c8b4ba 5287 if (err) {
849c4542 5288 e_dev_err("Cannot enable PCI device from suspend\n");
b3c8b4ba
AD		 5289 return err;
5290 }
5291 pci_set_master(pdev);
5292
dd4d8ca6 5293 pci_wake_from_d3(pdev, false);
b3c8b4ba
AD		 5294
5295 err = ixgbe_init_interrupt_scheme(adapter);
5296 if (err) {
849c4542 5297 e_dev_err("Cannot initialize interrupts for device\n");
b3c8b4ba
AD		 5298 return err;
5299 }
5300
b3c8b4ba
AD		 5301 ixgbe_reset(adapter);
5302
495dce12
WJP		 5303 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
5304
b3c8b4ba
AD		 5305 if (netif_running(netdev)) {
5306 err = ixgbe_open(adapter->netdev);
5307 if (err)
5308 return err;
5309 }
5310
5311 netif_device_attach(netdev);
5312
5313 return 0;
5314}
b3c8b4ba 5315#endif /* CONFIG_PM */
9d8d05ae
RW		 5316
5317static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
b3c8b4ba
AD		 5318{
5319 struct net_device *netdev = pci_get_drvdata(pdev);
5320 struct ixgbe_adapter *adapter = netdev_priv(netdev);
e8e26350
PW		 5321 struct ixgbe_hw *hw = &adapter->hw;
5322 u32 ctrl, fctrl;
5323 u32 wufc = adapter->wol;
b3c8b4ba
AD		 5324#ifdef CONFIG_PM
5325 int retval = 0;
5326#endif
5327
5328 netif_device_detach(netdev);
5329
5330 if (netif_running(netdev)) {
5331 ixgbe_down(adapter);
5332 ixgbe_free_irq(adapter);
5333 ixgbe_free_all_tx_resources(adapter);
5334 ixgbe_free_all_rx_resources(adapter);
5335 }
b3c8b4ba
AD		 5336
5337#ifdef CONFIG_PM
5338 retval = pci_save_state(pdev);
5339 if (retval)
5340 return retval;
4df10466 5341
b3c8b4ba 5342#endif
e8e26350
PW		 5343 if (wufc) {
5344 ixgbe_set_rx_mode(netdev);
b3c8b4ba 5345
e8e26350
PW		 5346 /* turn on all-multi mode if wake on multicast is enabled */
5347 if (wufc & IXGBE_WUFC_MC) {
5348 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
5349 fctrl |= IXGBE_FCTRL_MPE;
5350 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
5351 }
5352
5353 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
5354 ctrl |= IXGBE_CTRL_GIO_DIS;
5355 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
5356
5357 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc);
5358 } else {
5359 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0);
5360 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0);
5361 }
5362
dd4d8ca6
DS		 5363 if (wufc && hw->mac.type == ixgbe_mac_82599EB)
5364 pci_wake_from_d3(pdev, true);
5365 else
5366 pci_wake_from_d3(pdev, false);
b3c8b4ba 5367
9d8d05ae
RW		 5368 *enable_wake = !!wufc;
5369
fa378134
AG		 5370 ixgbe_clear_interrupt_scheme(adapter);
5371
b3c8b4ba
AD		 5372 ixgbe_release_hw_control(adapter);
5373
5374 pci_disable_device(pdev);
5375
9d8d05ae
RW		 5376 return 0;
5377}
5378
5379#ifdef CONFIG_PM
5380static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
5381{
5382 int retval;
5383 bool wake;
5384
5385 retval = __ixgbe_shutdown(pdev, &wake);
5386 if (retval)
5387 return retval;
5388
5389 if (wake) {
5390 pci_prepare_to_sleep(pdev);
5391 } else {
5392 pci_wake_from_d3(pdev, false);
5393 pci_set_power_state(pdev, PCI_D3hot);
5394 }
b3c8b4ba
AD		 5395
5396 return 0;
5397}
9d8d05ae 5398#endif /* CONFIG_PM */
b3c8b4ba
AD		 5399
5400static void ixgbe_shutdown(struct pci_dev *pdev)
5401{
9d8d05ae
RW		 5402 bool wake;
5403
5404 __ixgbe_shutdown(pdev, &wake);
5405
5406 if (system_state == SYSTEM_POWER_OFF) {
5407 pci_wake_from_d3(pdev, wake);
5408 pci_set_power_state(pdev, PCI_D3hot);
5409 }
b3c8b4ba
AD		 5410}
5411
9a799d71
AK		 5412/**
5413 * ixgbe_update_stats - Update the board statistics counters.
5414 * @adapter: board private structure
5415 **/
5416void ixgbe_update_stats(struct ixgbe_adapter *adapter)
5417{
2d86f139 5418 struct net_device *netdev = adapter->netdev;
9a799d71 5419 struct ixgbe_hw *hw = &adapter->hw;
6f11eef7
AV		 5420 u64 total_mpc = 0;
5421 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
eb985f09 5422 u64 non_eop_descs = 0, restart_queue = 0;
7ca647bd 5423 struct ixgbe_hw_stats *hwstats = &adapter->stats;
9a799d71 5424
d08935c2
DS		 5425 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
5426 test_bit(__IXGBE_RESETTING, &adapter->state))
5427 return;
5428
94b982b2 5429 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
f8212f97 5430 u64 rsc_count = 0;
94b982b2 5431 u64 rsc_flush = 0;
d51019a4
PW		 5432 for (i = 0; i < 16; i++)
5433 adapter->hw_rx_no_dma_resources +=
7ca647bd 5434 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
94b982b2 5435 for (i = 0; i < adapter->num_rx_queues; i++) {
4a0b9ca0
PW		 5436 rsc_count += adapter->rx_ring[i]->rsc_count;
5437 rsc_flush += adapter->rx_ring[i]->rsc_flush;
94b982b2
MC		 5438 }
5439 adapter->rsc_total_count = rsc_count;
5440 adapter->rsc_total_flush = rsc_flush;
d51019a4
PW		 5441 }
5442
7ca3bc58
JB		 5443 /* gather some stats to the adapter struct that are per queue */
5444 for (i = 0; i < adapter->num_tx_queues; i++)
4a0b9ca0 5445 restart_queue += adapter->tx_ring[i]->restart_queue;
eb985f09 5446 adapter->restart_queue = restart_queue;
7ca3bc58
JB		 5447
5448 for (i = 0; i < adapter->num_rx_queues; i++)
4a0b9ca0 5449 non_eop_descs += adapter->rx_ring[i]->non_eop_descs;
eb985f09 5450 adapter->non_eop_descs = non_eop_descs;
7ca3bc58 5451
7ca647bd 5452 hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
6f11eef7
AV		 5453 for (i = 0; i < 8; i++) {
5454 /* for packet buffers not used, the register should read 0 */
5455 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
5456 missed_rx += mpc;
7ca647bd
JP		 5457 hwstats->mpc[i] += mpc;
5458 total_mpc += hwstats->mpc[i];
e8e26350 5459 if (hw->mac.type == ixgbe_mac_82598EB)
7ca647bd
JP		 5460 hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
5461 hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i));
5462 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i));
5463 hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i));
5464 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i));
e8e26350 5465 if (hw->mac.type == ixgbe_mac_82599EB) {
7ca647bd
JP		 5466 hwstats->pxonrxc[i] +=
5467 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
5468 hwstats->pxoffrxc[i] +=
5469 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
5470 hwstats->qprdc[i] += IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
e8e26350 5471 } else {
7ca647bd
JP		 5472 hwstats->pxonrxc[i] +=
5473 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
5474 hwstats->pxoffrxc[i] +=
5475 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
e8e26350 5476 }
7ca647bd
JP		 5477 hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
5478 hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
6f11eef7 5479 }
7ca647bd 5480 hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
6f11eef7 5481 /* work around hardware counting issue */
7ca647bd 5482 hwstats->gprc -= missed_rx;
6f11eef7
AV		 5483
5484 /* 82598 hardware only has a 32 bit counter in the high register */
e8e26350 5485 if (hw->mac.type == ixgbe_mac_82599EB) {
aad71918 5486 u64 tmp;
7ca647bd 5487 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL);
e8e9f696
JP		 5488 tmp = IXGBE_READ_REG(hw, IXGBE_GORCH) & 0xF;
5489 /* 4 high bits of GORC */
7ca647bd
JP		 5490 hwstats->gorc += (tmp << 32);
5491 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL);
e8e9f696
JP		 5492 tmp = IXGBE_READ_REG(hw, IXGBE_GOTCH) & 0xF;
5493 /* 4 high bits of GOTC */
7ca647bd
JP		 5494 hwstats->gotc += (tmp << 32);
5495 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL);
e8e9f696 5496 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */
7ca647bd
JP		 5497 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
5498 hwstats->lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
5499 hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
5500 hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
6d45522c 5501#ifdef IXGBE_FCOE
7ca647bd
JP		 5502 hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC);
5503 hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC);
5504 hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC);
5505 hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC);
5506 hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC);
5507 hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC);
6d45522c 5508#endif /* IXGBE_FCOE */
e8e26350 5509 } else {
7ca647bd
JP		 5510 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
5511 hwstats->lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
5512 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
5513 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
5514 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH);
e8e26350 5515 }
9a799d71 5516 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
7ca647bd
JP		 5517 hwstats->bprc += bprc;
5518 hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
e8e26350 5519 if (hw->mac.type == ixgbe_mac_82598EB)
7ca647bd
JP		 5520 hwstats->mprc -= bprc;
5521 hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC);
5522 hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64);
5523 hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127);
5524 hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255);
5525 hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
5526 hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
5527 hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
5528 hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
6f11eef7 5529 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
7ca647bd 5530 hwstats->lxontxc += lxon;
6f11eef7 5531 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
7ca647bd
JP		 5532 hwstats->lxofftxc += lxoff;
5533 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
5534 hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
5535 hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
6f11eef7
AV		 5536 /*
5537 * 82598 errata - tx of flow control packets is included in tx counters
5538 */
5539 xon_off_tot = lxon + lxoff;
7ca647bd
JP		 5540 hwstats->gptc -= xon_off_tot;
5541 hwstats->mptc -= xon_off_tot;
5542 hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
5543 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
5544 hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
5545 hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
5546 hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
5547 hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
5548 hwstats->ptc64 -= xon_off_tot;
5549 hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
5550 hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
5551 hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
5552 hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
5553 hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
5554 hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
9a799d71
AK		 5555
5556 /* Fill out the OS statistics structure */
7ca647bd 5557 netdev->stats.multicast = hwstats->mprc;
9a799d71
AK		 5558
5559 /* Rx Errors */
7ca647bd 5560 netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec;
2d86f139 5561 netdev->stats.rx_dropped = 0;
7ca647bd
JP		 5562 netdev->stats.rx_length_errors = hwstats->rlec;
5563 netdev->stats.rx_crc_errors = hwstats->crcerrs;
2d86f139 5564 netdev->stats.rx_missed_errors = total_mpc;
9a799d71
AK		 5565}
5566
5567/**
5568 * ixgbe_watchdog - Timer Call-back
5569 * @data: pointer to adapter cast into an unsigned long
5570 **/
5571static void ixgbe_watchdog(unsigned long data)
5572{
5573 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
cf8280ee 5574 struct ixgbe_hw *hw = &adapter->hw;
fe49f04a
AD		 5575 u64 eics = 0;
5576 int i;
cf8280ee 5577
fe49f04a
AD		 5578 /*
5579 * Do the watchdog outside of interrupt context due to the lovely
5580 * delays that some of the newer hardware requires
5581 */
22d5a71b 5582
fe49f04a
AD		 5583 if (test_bit(__IXGBE_DOWN, &adapter->state))
5584 goto watchdog_short_circuit;
22d5a71b 5585
fe49f04a
AD		 5586 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
5587 /*
5588 * for legacy and MSI interrupts don't set any bits
5589 * that are enabled for EIAM, because this operation
5590 * would set *both* EIMS and EICS for any bit in EIAM
5591 */
5592 IXGBE_WRITE_REG(hw, IXGBE_EICS,
5593 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER));
5594 goto watchdog_reschedule;
5595 }
5596
5597 /* get one bit for every active tx/rx interrupt vector */
5598 for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) {
5599 struct ixgbe_q_vector *qv = adapter->q_vector[i];
5600 if (qv->rxr_count || qv->txr_count)
5601 eics |= ((u64)1 << i);
cf8280ee 5602 }
9a799d71 5603
fe49f04a
AD		 5604 /* Cause software interrupt to ensure rx rings are cleaned */
5605 ixgbe_irq_rearm_queues(adapter, eics);
5606
5607watchdog_reschedule:
5608 /* Reset the timer */
5609 mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ));
5610
5611watchdog_short_circuit:
cf8280ee
JB		 5612 schedule_work(&adapter->watchdog_task);
5613}
5614
e8e26350
PW		 5615/**
5616 * ixgbe_multispeed_fiber_task - worker thread to configure multispeed fiber
5617 * @work: pointer to work_struct containing our data
5618 **/
5619static void ixgbe_multispeed_fiber_task(struct work_struct *work)
5620{
5621 struct ixgbe_adapter *adapter = container_of(work,
e8e9f696
JP		 5622 struct ixgbe_adapter,
5623 multispeed_fiber_task);
e8e26350
PW		 5624 struct ixgbe_hw *hw = &adapter->hw;
5625 u32 autoneg;
8620a103 5626 bool negotiation;
e8e26350
PW		 5627
5628 adapter->flags |= IXGBE_FLAG_IN_SFP_LINK_TASK;
a1f25324
MC		 5629 autoneg = hw->phy.autoneg_advertised;
5630 if ((!autoneg) && (hw->mac.ops.get_link_capabilities))
8620a103 5631 hw->mac.ops.get_link_capabilities(hw, &autoneg, &negotiation);
1097cd17 5632 hw->mac.autotry_restart = false;
8620a103
MC		 5633 if (hw->mac.ops.setup_link)
5634 hw->mac.ops.setup_link(hw, autoneg, negotiation, true);
e8e26350
PW		 5635 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
5636 adapter->flags &= ~IXGBE_FLAG_IN_SFP_LINK_TASK;
5637}
5638
5639/**
5640 * ixgbe_sfp_config_module_task - worker thread to configure a new SFP+ module
5641 * @work: pointer to work_struct containing our data
5642 **/
5643static void ixgbe_sfp_config_module_task(struct work_struct *work)
5644{
5645 struct ixgbe_adapter *adapter = container_of(work,
e8e9f696
JP		 5646 struct ixgbe_adapter,
5647 sfp_config_module_task);
e8e26350
PW		 5648 struct ixgbe_hw *hw = &adapter->hw;
5649 u32 err;
5650
5651 adapter->flags |= IXGBE_FLAG_IN_SFP_MOD_TASK;
63d6e1d8
DS		 5652
5653 /* Time for electrical oscillations to settle down */
5654 msleep(100);
e8e26350 5655 err = hw->phy.ops.identify_sfp(hw);
63d6e1d8 5656
e8e26350 5657 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
849c4542
ET		 5658 e_dev_err("failed to initialize because an unsupported SFP+ "
5659 "module type was detected.\n");
5660 e_dev_err("Reload the driver after installing a supported "
5661 "module.\n");
63d6e1d8 5662 unregister_netdev(adapter->netdev);
e8e26350
PW		 5663 return;
5664 }
5665 hw->mac.ops.setup_sfp(hw);
5666
8d1c3c07 5667 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK))
e8e26350
PW		 5668 /* This will also work for DA Twinax connections */
5669 schedule_work(&adapter->multispeed_fiber_task);
5670 adapter->flags &= ~IXGBE_FLAG_IN_SFP_MOD_TASK;
5671}
5672
c4cf55e5
PWJ		 5673/**
5674 * ixgbe_fdir_reinit_task - worker thread to reinit FDIR filter table
5675 * @work: pointer to work_struct containing our data
5676 **/
5677static void ixgbe_fdir_reinit_task(struct work_struct *work)
5678{
5679 struct ixgbe_adapter *adapter = container_of(work,
e8e9f696
JP		 5680 struct ixgbe_adapter,
5681 fdir_reinit_task);
c4cf55e5
PWJ		 5682 struct ixgbe_hw *hw = &adapter->hw;
5683 int i;
5684
5685 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
5686 for (i = 0; i < adapter->num_tx_queues; i++)
5687 set_bit(__IXGBE_FDIR_INIT_DONE,
e8e9f696 5688 &(adapter->tx_ring[i]->reinit_state));
c4cf55e5 5689 } else {
396e799c 5690 e_err(probe, "failed to finish FDIR re-initialization, "
849c4542 5691 "ignored adding FDIR ATR filters\n");
c4cf55e5
PWJ		 5692 }
5693 /* Done FDIR Re-initialization, enable transmits */
5694 netif_tx_start_all_queues(adapter->netdev);
5695}
5696
10eec955
JF		 5697static DEFINE_MUTEX(ixgbe_watchdog_lock);
5698
cf8280ee 5699/**
69888674
AD		 5700 * ixgbe_watchdog_task - worker thread to bring link up
5701 * @work: pointer to work_struct containing our data
cf8280ee
JB		 5702 **/
5703static void ixgbe_watchdog_task(struct work_struct *work)
5704{
5705 struct ixgbe_adapter *adapter = container_of(work,
e8e9f696
JP		 5706 struct ixgbe_adapter,
5707 watchdog_task);
cf8280ee
JB		 5708 struct net_device *netdev = adapter->netdev;
5709 struct ixgbe_hw *hw = &adapter->hw;
10eec955
JF		 5710 u32 link_speed;
5711 bool link_up;
bc59fcda
NS		 5712 int i;
5713 struct ixgbe_ring *tx_ring;
5714 int some_tx_pending = 0;
cf8280ee 5715
10eec955
JF		 5716 mutex_lock(&ixgbe_watchdog_lock);
5717
5718 link_up = adapter->link_up;
5719 link_speed = adapter->link_speed;
cf8280ee
JB		 5720
5721 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) {
5722 hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
264857b8
PWJ		 5723 if (link_up) {
5724#ifdef CONFIG_DCB
5725 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
5726 for (i = 0; i < MAX_TRAFFIC_CLASS; i++)
620fa036 5727 hw->mac.ops.fc_enable(hw, i);
264857b8 5728 } else {
620fa036 5729 hw->mac.ops.fc_enable(hw, 0);
264857b8
PWJ		 5730 }
5731#else
620fa036 5732 hw->mac.ops.fc_enable(hw, 0);
264857b8
PWJ		 5733#endif
5734 }
5735
cf8280ee
JB		 5736 if (link_up ||
5737 time_after(jiffies, (adapter->link_check_timeout +
e8e9f696 5738 IXGBE_TRY_LINK_TIMEOUT))) {
cf8280ee 5739 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
264857b8 5740 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC);
cf8280ee
JB		 5741 }
5742 adapter->link_up = link_up;
5743 adapter->link_speed = link_speed;
5744 }
9a799d71
AK		 5745
5746 if (link_up) {
5747 if (!netif_carrier_ok(netdev)) {
e8e26350
PW		 5748 bool flow_rx, flow_tx;
5749
5750 if (hw->mac.type == ixgbe_mac_82599EB) {
5751 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN);
5752 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
078788b6
PWJ		 5753 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE);
5754 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X);
e8e26350
PW		 5755 } else {
5756 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
5757 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS);
078788b6
PWJ		 5758 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE);
5759 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X);
e8e26350
PW		 5760 }
5761
396e799c 5762 e_info(drv, "NIC Link is Up %s, Flow Control: %s\n",
a46e534b 5763 (link_speed == IXGBE_LINK_SPEED_10GB_FULL ?
849c4542
ET		 5764 "10 Gbps" :
5765 (link_speed == IXGBE_LINK_SPEED_1GB_FULL ?
5766 "1 Gbps" : "unknown speed")),
e8e26350 5767 ((flow_rx && flow_tx) ? "RX/TX" :
849c4542
ET		 5768 (flow_rx ? "RX" :
5769 (flow_tx ? "TX" : "None"))));
9a799d71
AK		 5770
5771 netif_carrier_on(netdev);
9a799d71
AK		 5772 } else {
5773 /* Force detection of hung controller */
5774 adapter->detect_tx_hung = true;
5775 }
5776 } else {
cf8280ee
JB		 5777 adapter->link_up = false;
5778 adapter->link_speed = 0;
9a799d71 5779 if (netif_carrier_ok(netdev)) {
396e799c 5780 e_info(drv, "NIC Link is Down\n");
9a799d71 5781 netif_carrier_off(netdev);
9a799d71
AK		 5782 }
5783 }
5784
bc59fcda
NS		 5785 if (!netif_carrier_ok(netdev)) {
5786 for (i = 0; i < adapter->num_tx_queues; i++) {
4a0b9ca0 5787 tx_ring = adapter->tx_ring[i];
bc59fcda
NS		 5788 if (tx_ring->next_to_use != tx_ring->next_to_clean) {
5789 some_tx_pending = 1;
5790 break;
5791 }
5792 }
5793
5794 if (some_tx_pending) {
5795 /* We've lost link, so the controller stops DMA,
5796 * but we've got queued Tx work that's never going
5797 * to get done, so reset controller to flush Tx.
5798 * (Do the reset outside of interrupt context).
5799 */
5800 schedule_work(&adapter->reset_task);
5801 }
5802 }
5803
9a799d71 5804 ixgbe_update_stats(adapter);
10eec955 5805 mutex_unlock(&ixgbe_watchdog_lock);
9a799d71
AK		 5806}
5807
9a799d71 5808static int ixgbe_tso(struct ixgbe_adapter *adapter,
e8e9f696 5809 struct ixgbe_ring *tx_ring, struct sk_buff *skb,
5e09a105 5810 u32 tx_flags, u8 *hdr_len, __be16 protocol)
9a799d71
AK		 5811{
5812 struct ixgbe_adv_tx_context_desc *context_desc;
5813 unsigned int i;
5814 int err;
5815 struct ixgbe_tx_buffer *tx_buffer_info;
9f8cdf4f
JB		 5816 u32 vlan_macip_lens = 0, type_tucmd_mlhl;
5817 u32 mss_l4len_idx, l4len;
9a799d71
AK		 5818
5819 if (skb_is_gso(skb)) {
5820 if (skb_header_cloned(skb)) {
5821 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
5822 if (err)
5823 return err;
5824 }
5825 l4len = tcp_hdrlen(skb);
5826 *hdr_len += l4len;
5827
5e09a105 5828 if (protocol == htons(ETH_P_IP)) {
9a799d71
AK		 5829 struct iphdr *iph = ip_hdr(skb);
5830 iph->tot_len = 0;
5831 iph->check = 0;
5832 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
e8e9f696
JP		 5833 iph->daddr, 0,
5834 IPPROTO_TCP,
5835 0);
8e1e8a47 5836 } else if (skb_is_gso_v6(skb)) {
9a799d71
AK		 5837 ipv6_hdr(skb)->payload_len = 0;
5838 tcp_hdr(skb)->check =
5839 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
e8e9f696
JP		 5840 &ipv6_hdr(skb)->daddr,
5841 0, IPPROTO_TCP, 0);
9a799d71
AK		 5842 }
5843
5844 i = tx_ring->next_to_use;
5845
5846 tx_buffer_info = &tx_ring->tx_buffer_info[i];
31f05a2d 5847 context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i);
9a799d71
AK		 5848
5849 /* VLAN MACLEN IPLEN */
5850 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
5851 vlan_macip_lens |=
5852 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
5853 vlan_macip_lens |= ((skb_network_offset(skb)) <<
e8e9f696 5854 IXGBE_ADVTXD_MACLEN_SHIFT);
9a799d71
AK		 5855 *hdr_len += skb_network_offset(skb);
5856 vlan_macip_lens |=
5857 (skb_transport_header(skb) - skb_network_header(skb));
5858 *hdr_len +=
5859 (skb_transport_header(skb) - skb_network_header(skb));
5860 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
5861 context_desc->seqnum_seed = 0;
5862
5863 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
9f8cdf4f 5864 type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT |
e8e9f696 5865 IXGBE_ADVTXD_DTYP_CTXT);
9a799d71 5866
5e09a105 5867 if (protocol == htons(ETH_P_IP))
9a799d71
AK		 5868 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
5869 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
5870 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
5871
5872 /* MSS L4LEN IDX */
9f8cdf4f 5873 mss_l4len_idx =
9a799d71
AK		 5874 (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT);
5875 mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT);
4eeae6fd
PW		 5876 /* use index 1 for TSO */
5877 mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
9a799d71
AK		 5878 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
5879
5880 tx_buffer_info->time_stamp = jiffies;
5881 tx_buffer_info->next_to_watch = i;
5882
5883 i++;
5884 if (i == tx_ring->count)
5885 i = 0;
5886 tx_ring->next_to_use = i;
5887
5888 return true;
5889 }
5890 return false;
5891}
5892
5e09a105
HZ		 5893static u32 ixgbe_psum(struct ixgbe_adapter *adapter, struct sk_buff *skb,
5894 __be16 protocol)
7ca647bd
JP		 5895{
5896 u32 rtn = 0;
7ca647bd
JP		 5897
5898 switch (protocol) {
5899 case cpu_to_be16(ETH_P_IP):
5900 rtn |= IXGBE_ADVTXD_TUCMD_IPV4;
5901 switch (ip_hdr(skb)->protocol) {
5902 case IPPROTO_TCP:
5903 rtn |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
5904 break;
5905 case IPPROTO_SCTP:
5906 rtn |= IXGBE_ADVTXD_TUCMD_L4T_SCTP;
5907 break;
5908 }
5909 break;
5910 case cpu_to_be16(ETH_P_IPV6):
5911 /* XXX what about other V6 headers?? */
5912 switch (ipv6_hdr(skb)->nexthdr) {
5913 case IPPROTO_TCP:
5914 rtn |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
5915 break;
5916 case IPPROTO_SCTP:
5917 rtn |= IXGBE_ADVTXD_TUCMD_L4T_SCTP;
5918 break;
5919 }
5920 break;
5921 default:
5922 if (unlikely(net_ratelimit()))
5923 e_warn(probe, "partial checksum but proto=%x!\n",
5e09a105 5924 protocol);
7ca647bd
JP		 5925 break;
5926 }
5927
5928 return rtn;
5929}
5930
9a799d71 5931static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter,
e8e9f696 5932 struct ixgbe_ring *tx_ring,
5e09a105
HZ		 5933 struct sk_buff *skb, u32 tx_flags,
5934 __be16 protocol)
9a799d71
AK		 5935{
5936 struct ixgbe_adv_tx_context_desc *context_desc;
5937 unsigned int i;
5938 struct ixgbe_tx_buffer *tx_buffer_info;
5939 u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0;
5940
5941 if (skb->ip_summed == CHECKSUM_PARTIAL ||
5942 (tx_flags & IXGBE_TX_FLAGS_VLAN)) {
5943 i = tx_ring->next_to_use;
5944 tx_buffer_info = &tx_ring->tx_buffer_info[i];
31f05a2d 5945 context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i);
9a799d71
AK		 5946
5947 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
5948 vlan_macip_lens |=
5949 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
5950 vlan_macip_lens |= (skb_network_offset(skb) <<
e8e9f696 5951 IXGBE_ADVTXD_MACLEN_SHIFT);
9a799d71
AK		 5952 if (skb->ip_summed == CHECKSUM_PARTIAL)
5953 vlan_macip_lens |= (skb_transport_header(skb) -
e8e9f696 5954 skb_network_header(skb));
9a799d71
AK		 5955
5956 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
5957 context_desc->seqnum_seed = 0;
5958
5959 type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT |
e8e9f696 5960 IXGBE_ADVTXD_DTYP_CTXT);
9a799d71 5961
7ca647bd 5962 if (skb->ip_summed == CHECKSUM_PARTIAL)
5e09a105 5963 type_tucmd_mlhl |= ixgbe_psum(adapter, skb, protocol);
9a799d71
AK		 5964
5965 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
4eeae6fd 5966 /* use index zero for tx checksum offload */
9a799d71
AK		 5967 context_desc->mss_l4len_idx = 0;
5968
5969 tx_buffer_info->time_stamp = jiffies;
5970 tx_buffer_info->next_to_watch = i;
9f8cdf4f 5971
9a799d71
AK		 5972 i++;
5973 if (i == tx_ring->count)
5974 i = 0;
5975 tx_ring->next_to_use = i;
5976
5977 return true;
5978 }
9f8cdf4f 5979
9a799d71
AK		 5980 return false;
5981}
5982
5983static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
e8e9f696
JP		 5984 struct ixgbe_ring *tx_ring,
5985 struct sk_buff *skb, u32 tx_flags,
8ad494b0 5986 unsigned int first, const u8 hdr_len)
9a799d71 5987{
e5a43549 5988 struct pci_dev *pdev = adapter->pdev;
9a799d71 5989 struct ixgbe_tx_buffer *tx_buffer_info;
eacd73f7
YZ		 5990 unsigned int len;
5991 unsigned int total = skb->len;
9a799d71
AK		 5992 unsigned int offset = 0, size, count = 0, i;
5993 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
5994 unsigned int f;
8ad494b0
AD		 5995 unsigned int bytecount = skb->len;
5996 u16 gso_segs = 1;
9a799d71
AK		 5997
5998 i = tx_ring->next_to_use;
5999
eacd73f7
YZ		 6000 if (tx_flags & IXGBE_TX_FLAGS_FCOE)
6001 /* excluding fcoe_crc_eof for FCoE */
6002 total -= sizeof(struct fcoe_crc_eof);
6003
6004 len = min(skb_headlen(skb), total);
9a799d71
AK		 6005 while (len) {
6006 tx_buffer_info = &tx_ring->tx_buffer_info[i];
6007 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
6008
6009 tx_buffer_info->length = size;
e5a43549 6010 tx_buffer_info->mapped_as_page = false;
1b507730 6011 tx_buffer_info->dma = dma_map_single(&pdev->dev,
e5a43549 6012 skb->data + offset,
1b507730
NN		 6013 size, DMA_TO_DEVICE);
6014 if (dma_mapping_error(&pdev->dev, tx_buffer_info->dma))
e5a43549 6015 goto dma_error;
9a799d71
AK		 6016 tx_buffer_info->time_stamp = jiffies;
6017 tx_buffer_info->next_to_watch = i;
6018
6019 len -= size;
eacd73f7 6020 total -= size;
9a799d71
AK		 6021 offset += size;
6022 count++;
44df32c5
AD		 6023
6024 if (len) {
6025 i++;
6026 if (i == tx_ring->count)
6027 i = 0;
6028 }
9a799d71
AK		 6029 }
6030
6031 for (f = 0; f < nr_frags; f++) {
6032 struct skb_frag_struct *frag;
6033
6034 frag = &skb_shinfo(skb)->frags[f];
eacd73f7 6035 len = min((unsigned int)frag->size, total);
e5a43549 6036 offset = frag->page_offset;
9a799d71
AK		 6037
6038 while (len) {
44df32c5
AD		 6039 i++;
6040 if (i == tx_ring->count)
6041 i = 0;
6042
9a799d71
AK		 6043 tx_buffer_info = &tx_ring->tx_buffer_info[i];
6044 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
6045
6046 tx_buffer_info->length = size;
1b507730 6047 tx_buffer_info->dma = dma_map_page(&adapter->pdev->dev,
e5a43549
AD		 6048 frag->page,
6049 offset, size,
1b507730 6050 DMA_TO_DEVICE);
e5a43549 6051 tx_buffer_info->mapped_as_page = true;
1b507730 6052 if (dma_mapping_error(&pdev->dev, tx_buffer_info->dma))
e5a43549 6053 goto dma_error;
9a799d71
AK		 6054 tx_buffer_info->time_stamp = jiffies;
6055 tx_buffer_info->next_to_watch = i;
6056
6057 len -= size;
eacd73f7 6058 total -= size;
9a799d71
AK		 6059 offset += size;
6060 count++;
9a799d71 6061 }
eacd73f7
YZ		 6062 if (total == 0)
6063 break;
9a799d71 6064 }
44df32c5 6065
8ad494b0
AD		 6066 if (tx_flags & IXGBE_TX_FLAGS_TSO)
6067 gso_segs = skb_shinfo(skb)->gso_segs;
6068#ifdef IXGBE_FCOE
6069 /* adjust for FCoE Sequence Offload */
6070 else if (tx_flags & IXGBE_TX_FLAGS_FSO)
6071 gso_segs = DIV_ROUND_UP(skb->len - hdr_len,
6072 skb_shinfo(skb)->gso_size);
6073#endif /* IXGBE_FCOE */
6074 bytecount += (gso_segs - 1) * hdr_len;
6075
6076 /* multiply data chunks by size of headers */
6077 tx_ring->tx_buffer_info[i].bytecount = bytecount;
6078 tx_ring->tx_buffer_info[i].gso_segs = gso_segs;
9a799d71
AK		 6079 tx_ring->tx_buffer_info[i].skb = skb;
6080 tx_ring->tx_buffer_info[first].next_to_watch = i;
6081
e5a43549
AD		 6082 return count;
6083
6084dma_error:
849c4542 6085 e_dev_err("TX DMA map failed\n");
e5a43549
AD		 6086
6087 /* clear timestamp and dma mappings for failed tx_buffer_info map */
6088 tx_buffer_info->dma = 0;
6089 tx_buffer_info->time_stamp = 0;
6090 tx_buffer_info->next_to_watch = 0;
c1fa347f
RK		 6091 if (count)
6092 count--;
e5a43549
AD		 6093
6094 /* clear timestamp and dma mappings for remaining portion of packet */
c1fa347f 6095 while (count--) {
e8e9f696 6096 if (i == 0)
e5a43549 6097 i += tx_ring->count;
c1fa347f 6098 i--;
e5a43549
AD		 6099 tx_buffer_info = &tx_ring->tx_buffer_info[i];
6100 ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info);
6101 }
6102
e44d38e1 6103 return 0;
9a799d71
AK		 6104}
6105
84ea2591 6106static void ixgbe_tx_queue(struct ixgbe_ring *tx_ring,
e8e9f696 6107 int tx_flags, int count, u32 paylen, u8 hdr_len)
9a799d71
AK		 6108{
6109 union ixgbe_adv_tx_desc *tx_desc = NULL;
6110 struct ixgbe_tx_buffer *tx_buffer_info;
6111 u32 olinfo_status = 0, cmd_type_len = 0;
6112 unsigned int i;
6113 u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS;
6114
6115 cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA;
6116
6117 cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
6118
6119 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
6120 cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE;
6121
6122 if (tx_flags & IXGBE_TX_FLAGS_TSO) {
6123 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
6124
6125 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
e8e9f696 6126 IXGBE_ADVTXD_POPTS_SHIFT;
9a799d71 6127
4eeae6fd
PW		 6128 /* use index 1 context for tso */
6129 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
9a799d71
AK		 6130 if (tx_flags & IXGBE_TX_FLAGS_IPV4)
6131 olinfo_status |= IXGBE_TXD_POPTS_IXSM <<
e8e9f696 6132 IXGBE_ADVTXD_POPTS_SHIFT;
9a799d71
AK		 6133
6134 } else if (tx_flags & IXGBE_TX_FLAGS_CSUM)
6135 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
e8e9f696 6136 IXGBE_ADVTXD_POPTS_SHIFT;
9a799d71 6137
eacd73f7
YZ		 6138 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
6139 olinfo_status |= IXGBE_ADVTXD_CC;
6140 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
6141 if (tx_flags & IXGBE_TX_FLAGS_FSO)
6142 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
6143 }
6144
9a799d71
AK		 6145 olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
6146
6147 i = tx_ring->next_to_use;
6148 while (count--) {
6149 tx_buffer_info = &tx_ring->tx_buffer_info[i];
31f05a2d 6150 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
9a799d71
AK		 6151 tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma);
6152 tx_desc->read.cmd_type_len =
e8e9f696 6153 cpu_to_le32(cmd_type_len | tx_buffer_info->length);
9a799d71 6154 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
9a799d71
AK		 6155 i++;
6156 if (i == tx_ring->count)
6157 i = 0;
6158 }
6159
6160 tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd);
6161
6162 /*
6163 * Force memory writes to complete before letting h/w
6164 * know there are new descriptors to fetch. (Only
6165 * applicable for weak-ordered memory model archs,
6166 * such as IA-64).
6167 */
6168 wmb();
6169
6170 tx_ring->next_to_use = i;
84ea2591 6171 writel(i, tx_ring->tail);
9a799d71
AK		 6172}
6173
c4cf55e5 6174static void ixgbe_atr(struct ixgbe_adapter *adapter, struct sk_buff *skb,
5e09a105 6175 int queue, u32 tx_flags, __be16 protocol)
c4cf55e5 6176{
c4cf55e5
PWJ		 6177 struct ixgbe_atr_input atr_input;
6178 struct tcphdr *th;
c4cf55e5
PWJ		 6179 struct iphdr *iph = ip_hdr(skb);
6180 struct ethhdr *eth = (struct ethhdr *)skb->data;
6181 u16 vlan_id, src_port, dst_port, flex_bytes;
6182 u32 src_ipv4_addr, dst_ipv4_addr;
6183 u8 l4type = 0;
6184
d3ead241 6185 /* Right now, we support IPv4 only */
5e09a105 6186 if (protocol != htons(ETH_P_IP))
d3ead241 6187 return;
c4cf55e5
PWJ		 6188 /* check if we're UDP or TCP */
6189 if (iph->protocol == IPPROTO_TCP) {
6190 th = tcp_hdr(skb);
6191 src_port = th->source;
6192 dst_port = th->dest;
6193 l4type |= IXGBE_ATR_L4TYPE_TCP;
6194 /* l4type IPv4 type is 0, no need to assign */
c4cf55e5
PWJ		 6195 } else {
6196 /* Unsupported L4 header, just bail here */
6197 return;
6198 }
6199
6200 memset(&atr_input, 0, sizeof(struct ixgbe_atr_input));
6201
6202 vlan_id = (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK) >>
e8e9f696 6203 IXGBE_TX_FLAGS_VLAN_SHIFT;
c4cf55e5
PWJ		 6204 src_ipv4_addr = iph->saddr;
6205 dst_ipv4_addr = iph->daddr;
6206 flex_bytes = eth->h_proto;
6207
6208 ixgbe_atr_set_vlan_id_82599(&atr_input, vlan_id);
6209 ixgbe_atr_set_src_port_82599(&atr_input, dst_port);
6210 ixgbe_atr_set_dst_port_82599(&atr_input, src_port);
6211 ixgbe_atr_set_flex_byte_82599(&atr_input, flex_bytes);
6212 ixgbe_atr_set_l4type_82599(&atr_input, l4type);
6213 /* src and dst are inverted, think how the receiver sees them */
6214 ixgbe_atr_set_src_ipv4_82599(&atr_input, dst_ipv4_addr);
6215 ixgbe_atr_set_dst_ipv4_82599(&atr_input, src_ipv4_addr);
6216
6217 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
6218 ixgbe_fdir_add_signature_filter_82599(&adapter->hw, &atr_input, queue);
6219}
6220
e092be60 6221static int __ixgbe_maybe_stop_tx(struct net_device *netdev,
e8e9f696 6222 struct ixgbe_ring *tx_ring, int size)
e092be60 6223{
30eba97a 6224 netif_stop_subqueue(netdev, tx_ring->queue_index);
e092be60
AV		 6225 /* Herbert's original patch had:
6226 * smp_mb__after_netif_stop_queue();
6227 * but since that doesn't exist yet, just open code it. */
6228 smp_mb();
6229
6230 /* We need to check again in a case another CPU has just
6231 * made room available. */
6232 if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
6233 return -EBUSY;
6234
6235 /* A reprieve! - use start_queue because it doesn't call schedule */
af72166f 6236 netif_start_subqueue(netdev, tx_ring->queue_index);
7ca3bc58 6237 ++tx_ring->restart_queue;
e092be60
AV		 6238 return 0;
6239}
6240
6241static int ixgbe_maybe_stop_tx(struct net_device *netdev,
e8e9f696 6242 struct ixgbe_ring *tx_ring, int size)
e092be60
AV		 6243{
6244 if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
6245 return 0;
6246 return __ixgbe_maybe_stop_tx(netdev, tx_ring, size);
6247}
6248
09a3b1f8
SH		 6249static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb)
6250{
6251 struct ixgbe_adapter *adapter = netdev_priv(dev);
5f715823 6252 int txq = smp_processor_id();
56075a98 6253#ifdef IXGBE_FCOE
5e09a105
HZ		 6254 __be16 protocol;
6255
6256 protocol = vlan_get_protocol(skb);
6257
6258 if ((protocol == htons(ETH_P_FCOE)) ||
6259 (protocol == htons(ETH_P_FIP))) {
56075a98
JF		 6260 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
6261 txq &= (adapter->ring_feature[RING_F_FCOE].indices - 1);
6262 txq += adapter->ring_feature[RING_F_FCOE].mask;
6263 return txq;
4bc091d8 6264#ifdef CONFIG_IXGBE_DCB
56075a98
JF		 6265 } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6266 txq = adapter->fcoe.up;
6267 return txq;
4bc091d8 6268#endif
56075a98
JF		 6269 }
6270 }
6271#endif
6272
fdd3d631
KK		 6273 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
6274 while (unlikely(txq >= dev->real_num_tx_queues))
6275 txq -= dev->real_num_tx_queues;
5f715823 6276 return txq;
fdd3d631 6277 }
c4cf55e5 6278
2ea186ae
JF		 6279 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6280 if (skb->priority == TC_PRIO_CONTROL)
6281 txq = adapter->ring_feature[RING_F_DCB].indices-1;
6282 else
6283 txq = (skb->vlan_tci & IXGBE_TX_FLAGS_VLAN_PRIO_MASK)
6284 >> 13;
6285 return txq;
6286 }
09a3b1f8
SH		 6287
6288 return skb_tx_hash(dev, skb);
6289}
6290
84418e3b
AD		 6291netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb, struct net_device *netdev,
6292 struct ixgbe_adapter *adapter,
6293 struct ixgbe_ring *tx_ring)
9a799d71 6294{
60d51134 6295 struct netdev_queue *txq;
9a799d71
AK		 6296 unsigned int first;
6297 unsigned int tx_flags = 0;
30eba97a 6298 u8 hdr_len = 0;
5f715823 6299 int tso;
9a799d71
AK		 6300 int count = 0;
6301 unsigned int f;
5e09a105
HZ		 6302 __be16 protocol;
6303
6304 protocol = vlan_get_protocol(skb);
9f8cdf4f 6305
eab6d18d 6306 if (vlan_tx_tag_present(skb)) {
9f8cdf4f 6307 tx_flags |= vlan_tx_tag_get(skb);
2f90b865
AD		 6308 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6309 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
5f715823 6310 tx_flags |= ((skb->queue_mapping & 0x7) << 13);
2f90b865
AD		 6311 }
6312 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
6313 tx_flags |= IXGBE_TX_FLAGS_VLAN;
33c66bd1
JF		 6314 } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED &&
6315 skb->priority != TC_PRIO_CONTROL) {
2ea186ae
JF		 6316 tx_flags |= ((skb->queue_mapping & 0x7) << 13);
6317 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
6318 tx_flags |= IXGBE_TX_FLAGS_VLAN;
9a799d71 6319 }
eacd73f7 6320
09ad1cc0 6321#ifdef IXGBE_FCOE
56075a98
JF		 6322 /* for FCoE with DCB, we force the priority to what
6323 * was specified by the switch */
6324 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED &&
5e09a105
HZ		 6325 (protocol == htons(ETH_P_FCOE) ||
6326 protocol == htons(ETH_P_FIP))) {
4bc091d8
JF		 6327#ifdef CONFIG_IXGBE_DCB
6328 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6329 tx_flags &= ~(IXGBE_TX_FLAGS_VLAN_PRIO_MASK
6330 << IXGBE_TX_FLAGS_VLAN_SHIFT);
6331 tx_flags |= ((adapter->fcoe.up << 13)
6332 << IXGBE_TX_FLAGS_VLAN_SHIFT);
6333 }
6334#endif
ca77cd59 6335 /* flag for FCoE offloads */
5e09a105 6336 if (protocol == htons(ETH_P_FCOE))
ca77cd59 6337 tx_flags |= IXGBE_TX_FLAGS_FCOE;
09ad1cc0 6338 }
ca77cd59
RL		 6339#endif
6340
eacd73f7 6341 /* four things can cause us to need a context descriptor */
9f8cdf4f
JB		 6342 if (skb_is_gso(skb) ||
6343 (skb->ip_summed == CHECKSUM_PARTIAL) ||
eacd73f7
YZ		 6344 (tx_flags & IXGBE_TX_FLAGS_VLAN) ||
6345 (tx_flags & IXGBE_TX_FLAGS_FCOE))
9a799d71
AK		 6346 count++;
6347
9f8cdf4f
JB		 6348 count += TXD_USE_COUNT(skb_headlen(skb));
6349 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
9a799d71
AK		 6350 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
6351
e092be60 6352 if (ixgbe_maybe_stop_tx(netdev, tx_ring, count)) {
9a799d71 6353 adapter->tx_busy++;
9a799d71
AK		 6354 return NETDEV_TX_BUSY;
6355 }
9a799d71 6356
9a799d71 6357 first = tx_ring->next_to_use;
eacd73f7
YZ		 6358 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
6359#ifdef IXGBE_FCOE
6360 /* setup tx offload for FCoE */
6361 tso = ixgbe_fso(adapter, tx_ring, skb, tx_flags, &hdr_len);
6362 if (tso < 0) {
6363 dev_kfree_skb_any(skb);
6364 return NETDEV_TX_OK;
6365 }
6366 if (tso)
6367 tx_flags |= IXGBE_TX_FLAGS_FSO;
6368#endif /* IXGBE_FCOE */
6369 } else {
5e09a105 6370 if (protocol == htons(ETH_P_IP))
eacd73f7 6371 tx_flags |= IXGBE_TX_FLAGS_IPV4;
5e09a105
HZ		 6372 tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len,
6373 protocol);
eacd73f7
YZ		 6374 if (tso < 0) {
6375 dev_kfree_skb_any(skb);
6376 return NETDEV_TX_OK;
6377 }
9a799d71 6378
eacd73f7
YZ		 6379 if (tso)
6380 tx_flags |= IXGBE_TX_FLAGS_TSO;
5e09a105
HZ		 6381 else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags,
6382 protocol) &&
eacd73f7
YZ		 6383 (skb->ip_summed == CHECKSUM_PARTIAL))
6384 tx_flags |= IXGBE_TX_FLAGS_CSUM;
6385 }
9a799d71 6386
8ad494b0 6387 count = ixgbe_tx_map(adapter, tx_ring, skb, tx_flags, first, hdr_len);
44df32c5 6388 if (count) {
c4cf55e5
PWJ		 6389 /* add the ATR filter if ATR is on */
6390 if (tx_ring->atr_sample_rate) {
6391 ++tx_ring->atr_count;
6392 if ((tx_ring->atr_count >= tx_ring->atr_sample_rate) &&
e8e9f696
JP		 6393 test_bit(__IXGBE_FDIR_INIT_DONE,
6394 &tx_ring->reinit_state)) {
c4cf55e5 6395 ixgbe_atr(adapter, skb, tx_ring->queue_index,
5e09a105 6396 tx_flags, protocol);
c4cf55e5
PWJ		 6397 tx_ring->atr_count = 0;
6398 }
6399 }
60d51134
ED		 6400 txq = netdev_get_tx_queue(netdev, tx_ring->queue_index);
6401 txq->tx_bytes += skb->len;
6402 txq->tx_packets++;
84ea2591 6403 ixgbe_tx_queue(tx_ring, tx_flags, count, skb->len, hdr_len);
44df32c5 6404 ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED);
9a799d71 6405
44df32c5
AD		 6406 } else {
6407 dev_kfree_skb_any(skb);
6408 tx_ring->tx_buffer_info[first].time_stamp = 0;
6409 tx_ring->next_to_use = first;
6410 }
9a799d71
AK		 6411
6412 return NETDEV_TX_OK;
6413}
6414
84418e3b
AD		 6415static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
6416{
6417 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6418 struct ixgbe_ring *tx_ring;
6419
6420 tx_ring = adapter->tx_ring[skb->queue_mapping];
6421 return ixgbe_xmit_frame_ring(skb, netdev, adapter, tx_ring);
6422}
6423
9a799d71
AK		 6424/**
6425 * ixgbe_set_mac - Change the Ethernet Address of the NIC
6426 * @netdev: network interface device structure
6427 * @p: pointer to an address structure
6428 *
6429 * Returns 0 on success, negative on failure
6430 **/
6431static int ixgbe_set_mac(struct net_device *netdev, void *p)
6432{
6433 struct ixgbe_adapter *adapter = netdev_priv(netdev);
b4617240 6434 struct ixgbe_hw *hw = &adapter->hw;
9a799d71
AK		 6435 struct sockaddr *addr = p;
6436
6437 if (!is_valid_ether_addr(addr->sa_data))
6438 return -EADDRNOTAVAIL;
6439
6440 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
b4617240 6441 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
9a799d71 6442
1cdd1ec8
GR		 6443 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
6444 IXGBE_RAH_AV);
9a799d71
AK		 6445
6446 return 0;
6447}
6448
6b73e10d
BH		 6449static int
6450ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr)
6451{
6452 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6453 struct ixgbe_hw *hw = &adapter->hw;
6454 u16 value;
6455 int rc;
6456
6457 if (prtad != hw->phy.mdio.prtad)
6458 return -EINVAL;
6459 rc = hw->phy.ops.read_reg(hw, addr, devad, &value);
6460 if (!rc)
6461 rc = value;
6462 return rc;
6463}
6464
6465static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad,
6466 u16 addr, u16 value)
6467{
6468 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6469 struct ixgbe_hw *hw = &adapter->hw;
6470
6471 if (prtad != hw->phy.mdio.prtad)
6472 return -EINVAL;
6473 return hw->phy.ops.write_reg(hw, addr, devad, value);
6474}
6475
6476static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
6477{
6478 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6479
6480 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd);
6481}
6482
0365e6e4
PW		 6483/**
6484 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
31278e71 6485 * netdev->dev_addrs
0365e6e4
PW		 6486 * @netdev: network interface device structure
6487 *
6488 * Returns non-zero on failure
6489 **/
6490static int ixgbe_add_sanmac_netdev(struct net_device *dev)
6491{
6492 int err = 0;
6493 struct ixgbe_adapter *adapter = netdev_priv(dev);
6494 struct ixgbe_mac_info *mac = &adapter->hw.mac;
6495
6496 if (is_valid_ether_addr(mac->san_addr)) {
6497 rtnl_lock();
6498 err = dev_addr_add(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
6499 rtnl_unlock();
6500 }
6501 return err;
6502}
6503
6504/**
6505 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
31278e71 6506 * netdev->dev_addrs
0365e6e4
PW		 6507 * @netdev: network interface device structure
6508 *
6509 * Returns non-zero on failure
6510 **/
6511static int ixgbe_del_sanmac_netdev(struct net_device *dev)
6512{
6513 int err = 0;
6514 struct ixgbe_adapter *adapter = netdev_priv(dev);
6515 struct ixgbe_mac_info *mac = &adapter->hw.mac;
6516
6517 if (is_valid_ether_addr(mac->san_addr)) {
6518 rtnl_lock();
6519 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
6520 rtnl_unlock();
6521 }
6522 return err;
6523}
6524
9a799d71
AK		 6525#ifdef CONFIG_NET_POLL_CONTROLLER
6526/*
6527 * Polling 'interrupt' - used by things like netconsole to send skbs
6528 * without having to re-enable interrupts. It's not called while
6529 * the interrupt routine is executing.
6530 */
6531static void ixgbe_netpoll(struct net_device *netdev)
6532{
6533 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8f9a7167 6534 int i;
9a799d71 6535
1a647bd2
AD		 6536 /* if interface is down do nothing */
6537 if (test_bit(__IXGBE_DOWN, &adapter->state))
6538 return;
6539
9a799d71 6540 adapter->flags |= IXGBE_FLAG_IN_NETPOLL;
8f9a7167
PWJ		 6541 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
6542 int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
6543 for (i = 0; i < num_q_vectors; i++) {
6544 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
6545 ixgbe_msix_clean_many(0, q_vector);
6546 }
6547 } else {
6548 ixgbe_intr(adapter->pdev->irq, netdev);
6549 }
9a799d71 6550 adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL;
9a799d71
AK		 6551}
6552#endif
6553
de1036b1
ED		 6554static struct rtnl_link_stats64 *ixgbe_get_stats64(struct net_device *netdev,
6555 struct rtnl_link_stats64 *stats)
6556{
6557 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6558 int i;
6559
6560 /* accurate rx/tx bytes/packets stats */
6561 dev_txq_stats_fold(netdev, stats);
1a51502b 6562 rcu_read_lock();
de1036b1 6563 for (i = 0; i < adapter->num_rx_queues; i++) {
1a51502b 6564 struct ixgbe_ring *ring = ACCESS_ONCE(adapter->rx_ring[i]);
de1036b1
ED		 6565 u64 bytes, packets;
6566 unsigned int start;
6567
1a51502b
ED		 6568 if (ring) {
6569 do {
6570 start = u64_stats_fetch_begin_bh(&ring->syncp);
6571 packets = ring->stats.packets;
6572 bytes = ring->stats.bytes;
6573 } while (u64_stats_fetch_retry_bh(&ring->syncp, start));
6574 stats->rx_packets += packets;
6575 stats->rx_bytes += bytes;
6576 }
de1036b1 6577 }
1a51502b 6578 rcu_read_unlock();
de1036b1
ED		 6579 /* following stats updated by ixgbe_watchdog_task() */
6580 stats->multicast = netdev->stats.multicast;
6581 stats->rx_errors = netdev->stats.rx_errors;
6582 stats->rx_length_errors = netdev->stats.rx_length_errors;
6583 stats->rx_crc_errors = netdev->stats.rx_crc_errors;
6584 stats->rx_missed_errors = netdev->stats.rx_missed_errors;
6585 return stats;
6586}
6587
6588
0edc3527 6589static const struct net_device_ops ixgbe_netdev_ops = {
e8e9f696 6590 .ndo_open = ixgbe_open,
0edc3527 6591 .ndo_stop = ixgbe_close,
00829823 6592 .ndo_start_xmit = ixgbe_xmit_frame,
09a3b1f8 6593 .ndo_select_queue = ixgbe_select_queue,
e90d400c 6594 .ndo_set_rx_mode = ixgbe_set_rx_mode,
0edc3527
SH		 6595 .ndo_set_multicast_list = ixgbe_set_rx_mode,
6596 .ndo_validate_addr = eth_validate_addr,
6597 .ndo_set_mac_address = ixgbe_set_mac,
6598 .ndo_change_mtu = ixgbe_change_mtu,
6599 .ndo_tx_timeout = ixgbe_tx_timeout,
0edc3527
SH		 6600 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
6601 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
6b73e10d 6602 .ndo_do_ioctl = ixgbe_ioctl,
7f01648a
GR		 6603 .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac,
6604 .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan,
6605 .ndo_set_vf_tx_rate = ixgbe_ndo_set_vf_bw,
6606 .ndo_get_vf_config = ixgbe_ndo_get_vf_config,
de1036b1 6607 .ndo_get_stats64 = ixgbe_get_stats64,
0edc3527
SH		 6608#ifdef CONFIG_NET_POLL_CONTROLLER
6609 .ndo_poll_controller = ixgbe_netpoll,
6610#endif
332d4a7d
YZ		 6611#ifdef IXGBE_FCOE
6612 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get,
6613 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put,
8450ff8c
YZ		 6614 .ndo_fcoe_enable = ixgbe_fcoe_enable,
6615 .ndo_fcoe_disable = ixgbe_fcoe_disable,
61a1fa10 6616 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn,
332d4a7d 6617#endif /* IXGBE_FCOE */
0edc3527
SH		 6618};
6619
1cdd1ec8
GR		 6620static void __devinit ixgbe_probe_vf(struct ixgbe_adapter *adapter,
6621 const struct ixgbe_info *ii)
6622{
6623#ifdef CONFIG_PCI_IOV
6624 struct ixgbe_hw *hw = &adapter->hw;
6625 int err;
6626
6627 if (hw->mac.type != ixgbe_mac_82599EB || !max_vfs)
6628 return;
6629
6630 /* The 82599 supports up to 64 VFs per physical function
6631 * but this implementation limits allocation to 63 so that
6632 * basic networking resources are still available to the
6633 * physical function
6634 */
6635 adapter->num_vfs = (max_vfs > 63) ? 63 : max_vfs;
6636 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
6637 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
6638 if (err) {
396e799c 6639 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
1cdd1ec8
GR		 6640 goto err_novfs;
6641 }
6642 /* If call to enable VFs succeeded then allocate memory
6643 * for per VF control structures.
6644 */
6645 adapter->vfinfo =
6646 kcalloc(adapter->num_vfs,
6647 sizeof(struct vf_data_storage), GFP_KERNEL);
6648 if (adapter->vfinfo) {
6649 /* Now that we're sure SR-IOV is enabled
6650 * and memory allocated set up the mailbox parameters
6651 */
6652 ixgbe_init_mbx_params_pf(hw);
6653 memcpy(&hw->mbx.ops, ii->mbx_ops,
6654 sizeof(hw->mbx.ops));
6655
6656 /* Disable RSC when in SR-IOV mode */
6657 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
6658 IXGBE_FLAG2_RSC_ENABLED);
6659 return;
6660 }
6661
6662 /* Oh oh */
396e799c
ET		 6663 e_err(probe, "Unable to allocate memory for VF Data Storage - "
6664 "SRIOV disabled\n");
1cdd1ec8
GR		 6665 pci_disable_sriov(adapter->pdev);
6666
6667err_novfs:
6668 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
6669 adapter->num_vfs = 0;
6670#endif /* CONFIG_PCI_IOV */
6671}
6672
9a799d71
AK		 6673/**
6674 * ixgbe_probe - Device Initialization Routine
6675 * @pdev: PCI device information struct
6676 * @ent: entry in ixgbe_pci_tbl
6677 *
6678 * Returns 0 on success, negative on failure
6679 *
6680 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
6681 * The OS initialization, configuring of the adapter private structure,
6682 * and a hardware reset occur.
6683 **/
6684static int __devinit ixgbe_probe(struct pci_dev *pdev,
e8e9f696 6685 const struct pci_device_id *ent)
9a799d71
AK		 6686{
6687 struct net_device *netdev;
6688 struct ixgbe_adapter *adapter = NULL;
6689 struct ixgbe_hw *hw;
6690 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
9a799d71
AK		 6691 static int cards_found;
6692 int i, err, pci_using_dac;
c85a2618 6693 unsigned int indices = num_possible_cpus();
eacd73f7
YZ		 6694#ifdef IXGBE_FCOE
6695 u16 device_caps;
6696#endif
c44ade9e 6697 u32 part_num, eec;
9a799d71 6698
bded64a7
AG		 6699 /* Catch broken hardware that put the wrong VF device ID in
6700 * the PCIe SR-IOV capability.
6701 */
6702 if (pdev->is_virtfn) {
6703 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
6704 pci_name(pdev), pdev->vendor, pdev->device);
6705 return -EINVAL;
6706 }
6707
9ce77666 6708 err = pci_enable_device_mem(pdev);
9a799d71
AK		 6709 if (err)
6710 return err;
6711
1b507730
NN		 6712 if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
6713 !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
9a799d71
AK		 6714 pci_using_dac = 1;
6715 } else {
1b507730 6716 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
9a799d71 6717 if (err) {
1b507730
NN		 6718 err = dma_set_coherent_mask(&pdev->dev,
6719 DMA_BIT_MASK(32));
9a799d71 6720 if (err) {
b8bc0421
DC		 6721 dev_err(&pdev->dev,
6722 "No usable DMA configuration, aborting\n");
9a799d71
AK		 6723 goto err_dma;
6724 }
6725 }
6726 pci_using_dac = 0;
6727 }
6728
9ce77666 6729 err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
e8e9f696 6730 IORESOURCE_MEM), ixgbe_driver_name);
9a799d71 6731 if (err) {
b8bc0421
DC		 6732 dev_err(&pdev->dev,
6733 "pci_request_selected_regions failed 0x%x\n", err);
9a799d71
AK		 6734 goto err_pci_reg;
6735 }
6736
19d5afd4 6737 pci_enable_pcie_error_reporting(pdev);
6fabd715 6738
9a799d71 6739 pci_set_master(pdev);
fb3b27bc 6740 pci_save_state(pdev);
9a799d71 6741
c85a2618
JF		 6742 if (ii->mac == ixgbe_mac_82598EB)
6743 indices = min_t(unsigned int, indices, IXGBE_MAX_RSS_INDICES);
6744 else
6745 indices = min_t(unsigned int, indices, IXGBE_MAX_FDIR_INDICES);
6746
6747 indices = max_t(unsigned int, indices, IXGBE_MAX_DCB_INDICES);
6748#ifdef IXGBE_FCOE
6749 indices += min_t(unsigned int, num_possible_cpus(),
6750 IXGBE_MAX_FCOE_INDICES);
6751#endif
c85a2618 6752 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices);
9a799d71
AK		 6753 if (!netdev) {
6754 err = -ENOMEM;
6755 goto err_alloc_etherdev;
6756 }
6757
9a799d71
AK		 6758 SET_NETDEV_DEV(netdev, &pdev->dev);
6759
6760 pci_set_drvdata(pdev, netdev);
6761 adapter = netdev_priv(netdev);
6762
6763 adapter->netdev = netdev;
6764 adapter->pdev = pdev;
6765 hw = &adapter->hw;
6766 hw->back = adapter;
6767 adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
6768
05857980 6769 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
e8e9f696 6770 pci_resource_len(pdev, 0));
9a799d71
AK		 6771 if (!hw->hw_addr) {
6772 err = -EIO;
6773 goto err_ioremap;
6774 }
6775
6776 for (i = 1; i <= 5; i++) {
6777 if (pci_resource_len(pdev, i) == 0)
6778 continue;
6779 }
6780
0edc3527 6781 netdev->netdev_ops = &ixgbe_netdev_ops;
9a799d71 6782 ixgbe_set_ethtool_ops(netdev);
9a799d71 6783 netdev->watchdog_timeo = 5 * HZ;
9a799d71
AK		 6784 strcpy(netdev->name, pci_name(pdev));
6785
9a799d71
AK		 6786 adapter->bd_number = cards_found;
6787
9a799d71
AK		 6788 /* Setup hw api */
6789 memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
021230d4 6790 hw->mac.type = ii->mac;
9a799d71 6791
c44ade9e
JB		 6792 /* EEPROM */
6793 memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops));
6794 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
6795 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
6796 if (!(eec & (1 << 8)))
6797 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
6798
6799 /* PHY */
6800 memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops));
c4900be0 6801 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
6b73e10d
BH		 6802 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
6803 hw->phy.mdio.prtad = MDIO_PRTAD_NONE;
6804 hw->phy.mdio.mmds = 0;
6805 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
6806 hw->phy.mdio.dev = netdev;
6807 hw->phy.mdio.mdio_read = ixgbe_mdio_read;
6808 hw->phy.mdio.mdio_write = ixgbe_mdio_write;
c4900be0
DS		 6809
6810 /* set up this timer and work struct before calling get_invariants
6811 * which might start the timer
6812 */
6813 init_timer(&adapter->sfp_timer);
c061b18d 6814 adapter->sfp_timer.function = ixgbe_sfp_timer;
c4900be0
DS		 6815 adapter->sfp_timer.data = (unsigned long) adapter;
6816
6817 INIT_WORK(&adapter->sfp_task, ixgbe_sfp_task);
c44ade9e 6818
e8e26350
PW		 6819 /* multispeed fiber has its own tasklet, called from GPI SDP1 context */
6820 INIT_WORK(&adapter->multispeed_fiber_task, ixgbe_multispeed_fiber_task);
6821
6822 /* a new SFP+ module arrival, called from GPI SDP2 context */
6823 INIT_WORK(&adapter->sfp_config_module_task,
e8e9f696 6824 ixgbe_sfp_config_module_task);
e8e26350 6825
8ca783ab 6826 ii->get_invariants(hw);
9a799d71
AK		 6827
6828 /* setup the private structure */
6829 err = ixgbe_sw_init(adapter);
6830 if (err)
6831 goto err_sw_init;
6832
e86bff0e
DS		 6833 /* Make it possible the adapter to be woken up via WOL */
6834 if (adapter->hw.mac.type == ixgbe_mac_82599EB)
6835 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
6836
bf069c97
DS		 6837 /*
6838 * If there is a fan on this device and it has failed log the
6839 * failure.
6840 */
6841 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
6842 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
6843 if (esdp & IXGBE_ESDP_SDP1)
396e799c 6844 e_crit(probe, "Fan has stopped, replace the adapter\n");
bf069c97
DS		 6845 }
6846
c44ade9e 6847 /* reset_hw fills in the perm_addr as well */
119fc60a 6848 hw->phy.reset_if_overtemp = true;
c44ade9e 6849 err = hw->mac.ops.reset_hw(hw);
119fc60a 6850 hw->phy.reset_if_overtemp = false;
8ca783ab
DS		 6851 if (err == IXGBE_ERR_SFP_NOT_PRESENT &&
6852 hw->mac.type == ixgbe_mac_82598EB) {
6853 /*
6854 * Start a kernel thread to watch for a module to arrive.
6855 * Only do this for 82598, since 82599 will generate
6856 * interrupts on module arrival.
6857 */
6858 set_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
6859 mod_timer(&adapter->sfp_timer,
6860 round_jiffies(jiffies + (2 * HZ)));
6861 err = 0;
6862 } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
849c4542
ET		 6863 e_dev_err("failed to initialize because an unsupported SFP+ "
6864 "module type was detected.\n");
6865 e_dev_err("Reload the driver after installing a supported "
6866 "module.\n");
04f165ef
PW		 6867 goto err_sw_init;
6868 } else if (err) {
849c4542 6869 e_dev_err("HW Init failed: %d\n", err);
c44ade9e
JB		 6870 goto err_sw_init;
6871 }
6872
1cdd1ec8
GR		 6873 ixgbe_probe_vf(adapter, ii);
6874
396e799c 6875 netdev->features = NETIF_F_SG |
e8e9f696
JP		 6876 NETIF_F_IP_CSUM |
6877 NETIF_F_HW_VLAN_TX |
6878 NETIF_F_HW_VLAN_RX |
6879 NETIF_F_HW_VLAN_FILTER;
9a799d71 6880
e9990a9c 6881 netdev->features |= NETIF_F_IPV6_CSUM;
9a799d71 6882 netdev->features |= NETIF_F_TSO;
9a799d71 6883 netdev->features |= NETIF_F_TSO6;
78b6f4ce 6884 netdev->features |= NETIF_F_GRO;
ad31c402 6885
45a5ead0
JB		 6886 if (adapter->hw.mac.type == ixgbe_mac_82599EB)
6887 netdev->features |= NETIF_F_SCTP_CSUM;
6888
ad31c402
JK		 6889 netdev->vlan_features |= NETIF_F_TSO;
6890 netdev->vlan_features |= NETIF_F_TSO6;
22f32b7a 6891 netdev->vlan_features |= NETIF_F_IP_CSUM;
cd1da503 6892 netdev->vlan_features |= NETIF_F_IPV6_CSUM;
ad31c402
JK		 6893 netdev->vlan_features |= NETIF_F_SG;
6894
1cdd1ec8
GR		 6895 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
6896 adapter->flags &= ~(IXGBE_FLAG_RSS_ENABLED |
6897 IXGBE_FLAG_DCB_ENABLED);
2f90b865
AD		 6898 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
6899 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
6900
7a6b6f51 6901#ifdef CONFIG_IXGBE_DCB
2f90b865
AD		 6902 netdev->dcbnl_ops = &dcbnl_ops;
6903#endif
6904
eacd73f7 6905#ifdef IXGBE_FCOE
0d551589 6906 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
eacd73f7
YZ		 6907 if (hw->mac.ops.get_device_caps) {
6908 hw->mac.ops.get_device_caps(hw, &device_caps);
0d551589
YZ		 6909 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)
6910 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
eacd73f7
YZ		 6911 }
6912 }
5e09d7f6
YZ		 6913 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
6914 netdev->vlan_features |= NETIF_F_FCOE_CRC;
6915 netdev->vlan_features |= NETIF_F_FSO;
6916 netdev->vlan_features |= NETIF_F_FCOE_MTU;
6917 }
eacd73f7 6918#endif /* IXGBE_FCOE */
7b872a55 6919 if (pci_using_dac) {
9a799d71 6920 netdev->features |= NETIF_F_HIGHDMA;
7b872a55
YZ		 6921 netdev->vlan_features |= NETIF_F_HIGHDMA;
6922 }
9a799d71 6923
0c19d6af 6924 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
f8212f97
AD		 6925 netdev->features |= NETIF_F_LRO;
6926
9a799d71 6927 /* make sure the EEPROM is good */
c44ade9e 6928 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
849c4542 6929 e_dev_err("The EEPROM Checksum Is Not Valid\n");
9a799d71
AK		 6930 err = -EIO;
6931 goto err_eeprom;
6932 }
6933
6934 memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len);
6935 memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len);
6936
c44ade9e 6937 if (ixgbe_validate_mac_addr(netdev->perm_addr)) {
849c4542 6938 e_dev_err("invalid MAC address\n");
9a799d71
AK		 6939 err = -EIO;
6940 goto err_eeprom;
6941 }
6942
61fac744
PW		 6943 /* power down the optics */
6944 if (hw->phy.multispeed_fiber)
6945 hw->mac.ops.disable_tx_laser(hw);
6946
9a799d71 6947 init_timer(&adapter->watchdog_timer);
c061b18d 6948 adapter->watchdog_timer.function = ixgbe_watchdog;
9a799d71
AK		 6949 adapter->watchdog_timer.data = (unsigned long)adapter;
6950
6951 INIT_WORK(&adapter->reset_task, ixgbe_reset_task);
cf8280ee 6952 INIT_WORK(&adapter->watchdog_task, ixgbe_watchdog_task);
9a799d71 6953
021230d4
AV		 6954 err = ixgbe_init_interrupt_scheme(adapter);
6955 if (err)
6956 goto err_sw_init;
9a799d71 6957
e8e26350
PW		 6958 switch (pdev->device) {
6959 case IXGBE_DEV_ID_82599_KX4:
495dce12 6960 adapter->wol = (IXGBE_WUFC_MAG | IXGBE_WUFC_EX |
e8e9f696 6961 IXGBE_WUFC_MC | IXGBE_WUFC_BC);
e8e26350
PW		 6962 break;
6963 default:
6964 adapter->wol = 0;
6965 break;
6966 }
e8e26350
PW		 6967 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
6968
04f165ef
PW		 6969 /* pick up the PCI bus settings for reporting later */
6970 hw->mac.ops.get_bus_info(hw);
6971
9a799d71 6972 /* print bus type/speed/width info */
849c4542 6973 e_dev_info("(PCI Express:%s:%s) %pM\n",
e8e9f696
JP		 6974 (hw->bus.speed == ixgbe_bus_speed_5000 ? "5.0Gb/s" :
6975 hw->bus.speed == ixgbe_bus_speed_2500 ? "2.5Gb/s" :
6976 "Unknown"),
6977 (hw->bus.width == ixgbe_bus_width_pcie_x8 ? "Width x8" :
6978 hw->bus.width == ixgbe_bus_width_pcie_x4 ? "Width x4" :
6979 hw->bus.width == ixgbe_bus_width_pcie_x1 ? "Width x1" :
6980 "Unknown"),
6981 netdev->dev_addr);
c44ade9e 6982 ixgbe_read_pba_num_generic(hw, &part_num);
e8e26350 6983 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present)
849c4542
ET		 6984 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, "
6985 "PBA No: %06x-%03x\n",
6986 hw->mac.type, hw->phy.type, hw->phy.sfp_type,
6987 (part_num >> 8), (part_num & 0xff));
e8e26350 6988 else
849c4542
ET		 6989 e_dev_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
6990 hw->mac.type, hw->phy.type,
6991 (part_num >> 8), (part_num & 0xff));
9a799d71 6992
e8e26350 6993 if (hw->bus.width <= ixgbe_bus_width_pcie_x4) {
849c4542
ET		 6994 e_dev_warn("PCI-Express bandwidth available for this card is "
6995 "not sufficient for optimal performance.\n");
6996 e_dev_warn("For optimal performance a x8 PCI-Express slot "
6997 "is required.\n");
0c254d86
AK		 6998 }
6999
34b0368c
PWJ		 7000 /* save off EEPROM version number */
7001 hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version);
7002
9a799d71 7003 /* reset the hardware with the new settings */
794caeb2 7004 err = hw->mac.ops.start_hw(hw);
c44ade9e 7005
794caeb2
PWJ		 7006 if (err == IXGBE_ERR_EEPROM_VERSION) {
7007 /* We are running on a pre-production device, log a warning */
849c4542
ET		 7008 e_dev_warn("This device is a pre-production adapter/LOM. "
7009 "Please be aware there may be issues associated "
7010 "with your hardware. If you are experiencing "
7011 "problems please contact your Intel or hardware "
7012 "representative who provided you with this "
7013 "hardware.\n");
794caeb2 7014 }
9a799d71
AK		 7015 strcpy(netdev->name, "eth%d");
7016 err = register_netdev(netdev);
7017 if (err)
7018 goto err_register;
7019
54386467
JB		 7020 /* carrier off reporting is important to ethtool even BEFORE open */
7021 netif_carrier_off(netdev);
7022
c4cf55e5
PWJ		 7023 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
7024 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
7025 INIT_WORK(&adapter->fdir_reinit_task, ixgbe_fdir_reinit_task);
7026
119fc60a 7027 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
e8e9f696
JP		 7028 INIT_WORK(&adapter->check_overtemp_task,
7029 ixgbe_check_overtemp_task);
5dd2d332 7030#ifdef CONFIG_IXGBE_DCA
652f093f 7031 if (dca_add_requester(&pdev->dev) == 0) {
bd0362dd 7032 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
bd0362dd
JC		 7033 ixgbe_setup_dca(adapter);
7034 }
7035#endif
1cdd1ec8 7036 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
396e799c 7037 e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs);
1cdd1ec8
GR		 7038 for (i = 0; i < adapter->num_vfs; i++)
7039 ixgbe_vf_configuration(pdev, (i | 0x10000000));
7040 }
7041
0365e6e4
PW		 7042 /* add san mac addr to netdev */
7043 ixgbe_add_sanmac_netdev(netdev);
9a799d71 7044
849c4542 7045 e_dev_info("Intel(R) 10 Gigabit Network Connection\n");
9a799d71
AK		 7046 cards_found++;
7047 return 0;
7048
7049err_register:
5eba3699 7050 ixgbe_release_hw_control(adapter);
7a921c93 7051 ixgbe_clear_interrupt_scheme(adapter);
9a799d71
AK		 7052err_sw_init:
7053err_eeprom:
1cdd1ec8
GR		 7054 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
7055 ixgbe_disable_sriov(adapter);
c4900be0
DS		 7056 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
7057 del_timer_sync(&adapter->sfp_timer);
7058 cancel_work_sync(&adapter->sfp_task);
e8e26350
PW		 7059 cancel_work_sync(&adapter->multispeed_fiber_task);
7060 cancel_work_sync(&adapter->sfp_config_module_task);
9a799d71
AK		 7061 iounmap(hw->hw_addr);
7062err_ioremap:
7063 free_netdev(netdev);
7064err_alloc_etherdev:
e8e9f696
JP		 7065 pci_release_selected_regions(pdev,
7066 pci_select_bars(pdev, IORESOURCE_MEM));
9a799d71
AK		 7067err_pci_reg:
7068err_dma:
7069 pci_disable_device(pdev);
7070 return err;
7071}
7072
7073/**
7074 * ixgbe_remove - Device Removal Routine
7075 * @pdev: PCI device information struct
7076 *
7077 * ixgbe_remove is called by the PCI subsystem to alert the driver
7078 * that it should release a PCI device. The could be caused by a
7079 * Hot-Plug event, or because the driver is going to be removed from
7080 * memory.
7081 **/
7082static void __devexit ixgbe_remove(struct pci_dev *pdev)
7083{
7084 struct net_device *netdev = pci_get_drvdata(pdev);
7085 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7086
7087 set_bit(__IXGBE_DOWN, &adapter->state);
c4900be0
DS		 7088 /* clear the module not found bit to make sure the worker won't
7089 * reschedule
7090 */
7091 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
9a799d71
AK		 7092 del_timer_sync(&adapter->watchdog_timer);
7093
c4900be0
DS		 7094 del_timer_sync(&adapter->sfp_timer);
7095 cancel_work_sync(&adapter->watchdog_task);
7096 cancel_work_sync(&adapter->sfp_task);
e8e26350
PW		 7097 cancel_work_sync(&adapter->multispeed_fiber_task);
7098 cancel_work_sync(&adapter->sfp_config_module_task);
c4cf55e5
PWJ		 7099 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
7100 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
7101 cancel_work_sync(&adapter->fdir_reinit_task);
9a799d71
AK		 7102 flush_scheduled_work();
7103
5dd2d332 7104#ifdef CONFIG_IXGBE_DCA
bd0362dd
JC		 7105 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
7106 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
7107 dca_remove_requester(&pdev->dev);
7108 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
7109 }
7110
7111#endif
332d4a7d
YZ		 7112#ifdef IXGBE_FCOE
7113 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
7114 ixgbe_cleanup_fcoe(adapter);
7115
7116#endif /* IXGBE_FCOE */
0365e6e4
PW		 7117
7118 /* remove the added san mac */
7119 ixgbe_del_sanmac_netdev(netdev);
7120
c4900be0
DS		 7121 if (netdev->reg_state == NETREG_REGISTERED)
7122 unregister_netdev(netdev);
9a799d71 7123
1cdd1ec8
GR		 7124 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
7125 ixgbe_disable_sriov(adapter);
7126
7a921c93 7127 ixgbe_clear_interrupt_scheme(adapter);
5eba3699 7128
021230d4 7129 ixgbe_release_hw_control(adapter);
9a799d71
AK		 7130
7131 iounmap(adapter->hw.hw_addr);
9ce77666 7132 pci_release_selected_regions(pdev, pci_select_bars(pdev,
e8e9f696 7133 IORESOURCE_MEM));
9a799d71 7134
849c4542 7135 e_dev_info("complete\n");
021230d4 7136
9a799d71
AK		 7137 free_netdev(netdev);
7138
19d5afd4 7139 pci_disable_pcie_error_reporting(pdev);
6fabd715 7140
9a799d71
AK		 7141 pci_disable_device(pdev);
7142}
7143
7144/**
7145 * ixgbe_io_error_detected - called when PCI error is detected
7146 * @pdev: Pointer to PCI device
7147 * @state: The current pci connection state
7148 *
7149 * This function is called after a PCI bus error affecting
7150 * this device has been detected.
7151 */
7152static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
e8e9f696 7153 pci_channel_state_t state)
9a799d71
AK		 7154{
7155 struct net_device *netdev = pci_get_drvdata(pdev);
454d7c9b 7156 struct ixgbe_adapter *adapter = netdev_priv(netdev);
9a799d71
AK		 7157
7158 netif_device_detach(netdev);
7159
3044b8d1
BL		 7160 if (state == pci_channel_io_perm_failure)
7161 return PCI_ERS_RESULT_DISCONNECT;
7162
9a799d71
AK		 7163 if (netif_running(netdev))
7164 ixgbe_down(adapter);
7165 pci_disable_device(pdev);
7166
b4617240 7167 /* Request a slot reset. */
9a799d71
AK		 7168 return PCI_ERS_RESULT_NEED_RESET;
7169}
7170
7171/**
7172 * ixgbe_io_slot_reset - called after the pci bus has been reset.
7173 * @pdev: Pointer to PCI device
7174 *
7175 * Restart the card from scratch, as if from a cold-boot.
7176 */
7177static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
7178{
7179 struct net_device *netdev = pci_get_drvdata(pdev);
454d7c9b 7180 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6fabd715
PWJ		 7181 pci_ers_result_t result;
7182 int err;
9a799d71 7183
9ce77666 7184 if (pci_enable_device_mem(pdev)) {
396e799c 7185 e_err(probe, "Cannot re-enable PCI device after reset.\n");
6fabd715
PWJ		 7186 result = PCI_ERS_RESULT_DISCONNECT;
7187 } else {
7188 pci_set_master(pdev);
7189 pci_restore_state(pdev);
c0e1f68b 7190 pci_save_state(pdev);
9a799d71 7191
dd4d8ca6 7192 pci_wake_from_d3(pdev, false);
9a799d71 7193
6fabd715 7194 ixgbe_reset(adapter);
88512539 7195 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
6fabd715
PWJ		 7196 result = PCI_ERS_RESULT_RECOVERED;
7197 }
7198
7199 err = pci_cleanup_aer_uncorrect_error_status(pdev);
7200 if (err) {
849c4542
ET		 7201 e_dev_err("pci_cleanup_aer_uncorrect_error_status "
7202 "failed 0x%0x\n", err);
6fabd715
PWJ		 7203 /* non-fatal, continue */
7204 }
9a799d71 7205
6fabd715 7206 return result;
9a799d71
AK		 7207}
7208
7209/**
7210 * ixgbe_io_resume - called when traffic can start flowing again.
7211 * @pdev: Pointer to PCI device
7212 *
7213 * This callback is called when the error recovery driver tells us that
7214 * its OK to resume normal operation.
7215 */
7216static void ixgbe_io_resume(struct pci_dev *pdev)
7217{
7218 struct net_device *netdev = pci_get_drvdata(pdev);
454d7c9b 7219 struct ixgbe_adapter *adapter = netdev_priv(netdev);
9a799d71
AK		 7220
7221 if (netif_running(netdev)) {
7222 if (ixgbe_up(adapter)) {
396e799c 7223 e_info(probe, "ixgbe_up failed after reset\n");
9a799d71
AK		 7224 return;
7225 }
7226 }
7227
7228 netif_device_attach(netdev);
9a799d71
AK		 7229}
7230
7231static struct pci_error_handlers ixgbe_err_handler = {
7232 .error_detected = ixgbe_io_error_detected,
7233 .slot_reset = ixgbe_io_slot_reset,
7234 .resume = ixgbe_io_resume,
7235};
7236
7237static struct pci_driver ixgbe_driver = {
7238 .name = ixgbe_driver_name,
7239 .id_table = ixgbe_pci_tbl,
7240 .probe = ixgbe_probe,
7241 .remove = __devexit_p(ixgbe_remove),
7242#ifdef CONFIG_PM
7243 .suspend = ixgbe_suspend,
7244 .resume = ixgbe_resume,
7245#endif
7246 .shutdown = ixgbe_shutdown,
7247 .err_handler = &ixgbe_err_handler
7248};
7249
7250/**
7251 * ixgbe_init_module - Driver Registration Routine
7252 *
7253 * ixgbe_init_module is the first routine called when the driver is
7254 * loaded. All it does is register with the PCI subsystem.
7255 **/
7256static int __init ixgbe_init_module(void)
7257{
7258 int ret;
c7689578 7259 pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version);
849c4542 7260 pr_info("%s\n", ixgbe_copyright);
9a799d71 7261
5dd2d332 7262#ifdef CONFIG_IXGBE_DCA
bd0362dd 7263 dca_register_notify(&dca_notifier);
bd0362dd 7264#endif
5dd2d332 7265
9a799d71
AK		 7266 ret = pci_register_driver(&ixgbe_driver);
7267 return ret;
7268}
b4617240 7269
9a799d71
AK		 7270module_init(ixgbe_init_module);
7271
7272/**
7273 * ixgbe_exit_module - Driver Exit Cleanup Routine
7274 *
7275 * ixgbe_exit_module is called just before the driver is removed
7276 * from memory.
7277 **/
7278static void __exit ixgbe_exit_module(void)
7279{
5dd2d332 7280#ifdef CONFIG_IXGBE_DCA
bd0362dd
JC		 7281 dca_unregister_notify(&dca_notifier);
7282#endif
9a799d71 7283 pci_unregister_driver(&ixgbe_driver);
1a51502b 7284 rcu_barrier(); /* Wait for completion of call_rcu()'s */
9a799d71 7285}
bd0362dd 7286
5dd2d332 7287#ifdef CONFIG_IXGBE_DCA
bd0362dd 7288static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event,
e8e9f696 7289 void *p)
bd0362dd
JC		 7290{
7291 int ret_val;
7292
7293 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event,
e8e9f696 7294 __ixgbe_notify_dca);
bd0362dd
JC		 7295
7296 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
7297}
b453368d 7298
5dd2d332 7299#endif /* CONFIG_IXGBE_DCA */
849c4542 7300
b453368d 7301/**
849c4542 7302 * ixgbe_get_hw_dev return device
b453368d
AD		 7303 * used by hardware layer to print debugging information
7304 **/
849c4542 7305struct net_device *ixgbe_get_hw_dev(struct ixgbe_hw *hw)
b453368d
AD		 7306{
7307 struct ixgbe_adapter *adapter = hw->back;
849c4542 7308 return adapter->netdev;
b453368d 7309}
bd0362dd 7310
9a799d71
AK		 7311module_exit(ixgbe_exit_module);
7312
7313/* ixgbe_main.c */
Clone of davem's net-next-2.6 tree