]> bbs.cooldavid.org Git - net-next-2.6.git/blame - drivers/net/ixgbe/ixgbe_main.c
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
ixgbe: move ixgbe_clear_interrupt_scheme to before pci_save_state
[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
b6ec895e
AD		 603void ixgbe_unmap_and_free_tx_resource(struct ixgbe_ring *tx_ring,
604 struct ixgbe_tx_buffer *tx_buffer_info)
9a799d71 605{
e5a43549
AD		 606 if (tx_buffer_info->dma) {
607 if (tx_buffer_info->mapped_as_page)
b6ec895e 608 dma_unmap_page(tx_ring->dev,
e5a43549
AD		 609 tx_buffer_info->dma,
610 tx_buffer_info->length,
1b507730 611 DMA_TO_DEVICE);
e5a43549 612 else
b6ec895e 613 dma_unmap_single(tx_ring->dev,
e5a43549
AD		 614 tx_buffer_info->dma,
615 tx_buffer_info->length,
1b507730 616 DMA_TO_DEVICE);
e5a43549
AD		 617 tx_buffer_info->dma = 0;
618 }
9a799d71
AK		 619 if (tx_buffer_info->skb) {
620 dev_kfree_skb_any(tx_buffer_info->skb);
621 tx_buffer_info->skb = NULL;
622 }
44df32c5 623 tx_buffer_info->time_stamp = 0;
9a799d71
AK		 624 /* tx_buffer_info must be completely set up in the transmit path */
625}
626
26f23d82 627/**
7483d9dd 628 * ixgbe_tx_xon_state - check the tx ring xon state
26f23d82
YZ		 629 * @adapter: the ixgbe adapter
630 * @tx_ring: the corresponding tx_ring
631 *
632 * If not in DCB mode, checks TFCS.TXOFF, otherwise, find out the
633 * corresponding TC of this tx_ring when checking TFCS.
634 *
7483d9dd 635 * Returns : true if in xon state (currently not paused)
26f23d82 636 */
7483d9dd 637static inline bool ixgbe_tx_xon_state(struct ixgbe_adapter *adapter,
e8e9f696 638 struct ixgbe_ring *tx_ring)
26f23d82 639{
26f23d82
YZ		 640 u32 txoff = IXGBE_TFCS_TXOFF;
641
642#ifdef CONFIG_IXGBE_DCB
ca739481 643 if (adapter->dcb_cfg.pfc_mode_enable) {
30b76832 644 int tc;
26f23d82
YZ		 645 int reg_idx = tx_ring->reg_idx;
646 int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
647
6837e895
PW		 648 switch (adapter->hw.mac.type) {
649 case ixgbe_mac_82598EB:
26f23d82
YZ		 650 tc = reg_idx >> 2;
651 txoff = IXGBE_TFCS_TXOFF0;
6837e895
PW		 652 break;
653 case ixgbe_mac_82599EB:
26f23d82
YZ		 654 tc = 0;
655 txoff = IXGBE_TFCS_TXOFF;
656 if (dcb_i == 8) {
657 /* TC0, TC1 */
658 tc = reg_idx >> 5;
659 if (tc == 2) /* TC2, TC3 */
660 tc += (reg_idx - 64) >> 4;
661 else if (tc == 3) /* TC4, TC5, TC6, TC7 */
662 tc += 1 + ((reg_idx - 96) >> 3);
663 } else if (dcb_i == 4) {
664 /* TC0, TC1 */
665 tc = reg_idx >> 6;
666 if (tc == 1) {
667 tc += (reg_idx - 64) >> 5;
668 if (tc == 2) /* TC2, TC3 */
669 tc += (reg_idx - 96) >> 4;
670 }
671 }
6837e895
PW		 672 break;
673 default:
674 tc = 0;
26f23d82
YZ		 675 }
676 txoff <<= tc;
677 }
678#endif
679 return IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & txoff;
680}
681
9a799d71 682static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter,
e8e9f696
JP		 683 struct ixgbe_ring *tx_ring,
684 unsigned int eop)
9a799d71 685{
e01c31a5 686 struct ixgbe_hw *hw = &adapter->hw;
e01c31a5 687
9a799d71 688 /* Detect a transmit hang in hardware, this serializes the
e01c31a5 689 * check with the clearing of time_stamp and movement of eop */
9a799d71 690 adapter->detect_tx_hung = false;
44df32c5 691 if (tx_ring->tx_buffer_info[eop].time_stamp &&
9a799d71 692 time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) &&
7483d9dd 693 ixgbe_tx_xon_state(adapter, tx_ring)) {
9a799d71 694 /* detected Tx unit hang */
e01c31a5 695 union ixgbe_adv_tx_desc *tx_desc;
31f05a2d 696 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
396e799c 697 e_err(drv, "Detected Tx Unit Hang\n"
849c4542
ET		 698 " Tx Queue <%d>\n"
699 " TDH, TDT <%x>, <%x>\n"
700 " next_to_use <%x>\n"
701 " next_to_clean <%x>\n"
702 "tx_buffer_info[next_to_clean]\n"
703 " time_stamp <%lx>\n"
704 " jiffies <%lx>\n",
705 tx_ring->queue_index,
84ea2591
AD		 706 IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)),
707 IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)),
849c4542
ET		 708 tx_ring->next_to_use, eop,
709 tx_ring->tx_buffer_info[eop].time_stamp, jiffies);
9a799d71
AK		 710 return true;
711 }
712
713 return false;
714}
715
b4617240
PW		 716#define IXGBE_MAX_TXD_PWR 14
717#define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
e092be60
AV		 718
719/* Tx Descriptors needed, worst case */
720#define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
721 (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
722#define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
b4617240 723 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
e092be60 724
e01c31a5
JB		 725static void ixgbe_tx_timeout(struct net_device *netdev);
726
9a799d71
AK		 727/**
728 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
fe49f04a 729 * @q_vector: structure containing interrupt and ring information
e01c31a5 730 * @tx_ring: tx ring to clean
9a799d71 731 **/
fe49f04a 732static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
e8e9f696 733 struct ixgbe_ring *tx_ring)
9a799d71 734{
fe49f04a 735 struct ixgbe_adapter *adapter = q_vector->adapter;
12207e49
PWJ		 736 union ixgbe_adv_tx_desc *tx_desc, *eop_desc;
737 struct ixgbe_tx_buffer *tx_buffer_info;
738 unsigned int i, eop, count = 0;
e01c31a5 739 unsigned int total_bytes = 0, total_packets = 0;
9a799d71
AK		 740
741 i = tx_ring->next_to_clean;
12207e49 742 eop = tx_ring->tx_buffer_info[i].next_to_watch;
31f05a2d 743 eop_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
12207e49
PWJ		 744
745 while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) &&
9a1a69ad 746 (count < tx_ring->work_limit)) {
12207e49 747 bool cleaned = false;
2d0bb1c1 748 rmb(); /* read buffer_info after eop_desc */
12207e49 749 for ( ; !cleaned; count++) {
31f05a2d 750 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
9a799d71 751 tx_buffer_info = &tx_ring->tx_buffer_info[i];
8ad494b0
AD		 752
753 tx_desc->wb.status = 0;
12207e49 754 cleaned = (i == eop);
9a799d71 755
8ad494b0
AD		 756 i++;
757 if (i == tx_ring->count)
758 i = 0;
e01c31a5 759
8ad494b0
AD		 760 if (cleaned && tx_buffer_info->skb) {
761 total_bytes += tx_buffer_info->bytecount;
762 total_packets += tx_buffer_info->gso_segs;
e092be60 763 }
e01c31a5 764
b6ec895e 765 ixgbe_unmap_and_free_tx_resource(tx_ring,
e8e9f696 766 tx_buffer_info);
e01c31a5 767 }
12207e49
PWJ		 768
769 eop = tx_ring->tx_buffer_info[i].next_to_watch;
31f05a2d 770 eop_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
12207e49
PWJ		 771 }
772
9a799d71
AK		 773 tx_ring->next_to_clean = i;
774
e092be60 775#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
fc77dc3c 776 if (unlikely(count && netif_carrier_ok(tx_ring->netdev) &&
e8e9f696 777 (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
e092be60
AV		 778 /* Make sure that anybody stopping the queue after this
779 * sees the new next_to_clean.
780 */
781 smp_mb();
fc77dc3c 782 if (__netif_subqueue_stopped(tx_ring->netdev, tx_ring->queue_index) &&
30eba97a 783 !test_bit(__IXGBE_DOWN, &adapter->state)) {
fc77dc3c 784 netif_wake_subqueue(tx_ring->netdev, tx_ring->queue_index);
5b7da515 785 ++tx_ring->tx_stats.restart_queue;
30eba97a 786 }
e092be60 787 }
9a799d71 788
e01c31a5
JB		 789 if (adapter->detect_tx_hung) {
790 if (ixgbe_check_tx_hang(adapter, tx_ring, i)) {
791 /* schedule immediate reset if we believe we hung */
396e799c
ET		 792 e_info(probe, "tx hang %d detected, resetting "
793 "adapter\n", adapter->tx_timeout_count + 1);
e01c31a5
JB		 794 ixgbe_tx_timeout(adapter->netdev);
795 }
796 }
9a799d71 797
e01c31a5 798 /* re-arm the interrupt */
fe49f04a
AD		 799 if (count >= tx_ring->work_limit)
800 ixgbe_irq_rearm_queues(adapter, ((u64)1 << q_vector->v_idx));
9a799d71 801
e01c31a5
JB		 802 tx_ring->total_bytes += total_bytes;
803 tx_ring->total_packets += total_packets;
de1036b1 804 u64_stats_update_begin(&tx_ring->syncp);
e01c31a5 805 tx_ring->stats.packets += total_packets;
12207e49 806 tx_ring->stats.bytes += total_bytes;
de1036b1 807 u64_stats_update_end(&tx_ring->syncp);
807540ba 808 return count < tx_ring->work_limit;
9a799d71
AK		 809}
810
5dd2d332 811#ifdef CONFIG_IXGBE_DCA
bd0362dd 812static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter,
e8e9f696 813 struct ixgbe_ring *rx_ring)
bd0362dd
JC		 814{
815 u32 rxctrl;
816 int cpu = get_cpu();
4a0b9ca0 817 int q = rx_ring->reg_idx;
bd0362dd 818
3a581073 819 if (rx_ring->cpu != cpu) {
bd0362dd 820 rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q));
e8e26350
PW		 821 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
822 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK;
823 rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
824 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
825 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK_82599;
826 rxctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
e8e9f696 827 IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599);
e8e26350 828 }
bd0362dd
JC		 829 rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN;
830 rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN;
15005a32
DS		 831 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN);
832 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_WRO_EN |
e8e9f696 833 IXGBE_DCA_RXCTRL_DESC_HSRO_EN);
bd0362dd 834 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q), rxctrl);
3a581073 835 rx_ring->cpu = cpu;
bd0362dd
JC		 836 }
837 put_cpu();
838}
839
840static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
e8e9f696 841 struct ixgbe_ring *tx_ring)
bd0362dd
JC		 842{
843 u32 txctrl;
844 int cpu = get_cpu();
4a0b9ca0 845 int q = tx_ring->reg_idx;
ee5f784a 846 struct ixgbe_hw *hw = &adapter->hw;
bd0362dd 847
3a581073 848 if (tx_ring->cpu != cpu) {
e8e26350 849 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
ee5f784a 850 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(q));
e8e26350
PW		 851 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK;
852 txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
ee5f784a
DS		 853 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
854 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(q), txctrl);
e8e26350 855 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
ee5f784a 856 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(q));
e8e26350
PW		 857 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599;
858 txctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
e8e9f696 859 IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599);
ee5f784a
DS		 860 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
861 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(q), txctrl);
e8e26350 862 }
3a581073 863 tx_ring->cpu = cpu;
bd0362dd
JC		 864 }
865 put_cpu();
866}
867
868static void ixgbe_setup_dca(struct ixgbe_adapter *adapter)
869{
870 int i;
871
872 if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED))
873 return;
874
e35ec126
AD		 875 /* always use CB2 mode, difference is masked in the CB driver */
876 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2);
877
bd0362dd 878 for (i = 0; i < adapter->num_tx_queues; i++) {
4a0b9ca0
PW		 879 adapter->tx_ring[i]->cpu = -1;
880 ixgbe_update_tx_dca(adapter, adapter->tx_ring[i]);
bd0362dd
JC		 881 }
882 for (i = 0; i < adapter->num_rx_queues; i++) {
4a0b9ca0
PW		 883 adapter->rx_ring[i]->cpu = -1;
884 ixgbe_update_rx_dca(adapter, adapter->rx_ring[i]);
bd0362dd
JC		 885 }
886}
887
888static int __ixgbe_notify_dca(struct device *dev, void *data)
889{
890 struct net_device *netdev = dev_get_drvdata(dev);
891 struct ixgbe_adapter *adapter = netdev_priv(netdev);
892 unsigned long event = *(unsigned long *)data;
893
894 switch (event) {
895 case DCA_PROVIDER_ADD:
96b0e0f6
JB		 896 /* if we're already enabled, don't do it again */
897 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
898 break;
652f093f 899 if (dca_add_requester(dev) == 0) {
96b0e0f6 900 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
bd0362dd
JC		 901 ixgbe_setup_dca(adapter);
902 break;
903 }
904 /* Fall Through since DCA is disabled. */
905 case DCA_PROVIDER_REMOVE:
906 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
907 dca_remove_requester(dev);
908 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
909 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
910 }
911 break;
912 }
913
652f093f 914 return 0;
bd0362dd
JC		 915}
916
5dd2d332 917#endif /* CONFIG_IXGBE_DCA */
9a799d71
AK		 918/**
919 * ixgbe_receive_skb - Send a completed packet up the stack
920 * @adapter: board private structure
921 * @skb: packet to send up
177db6ff
MC		 922 * @status: hardware indication of status of receive
923 * @rx_ring: rx descriptor ring (for a specific queue) to setup
924 * @rx_desc: rx descriptor
9a799d71 925 **/
78b6f4ce 926static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector,
e8e9f696
JP		 927 struct sk_buff *skb, u8 status,
928 struct ixgbe_ring *ring,
929 union ixgbe_adv_rx_desc *rx_desc)
9a799d71 930{
78b6f4ce
HX		 931 struct ixgbe_adapter *adapter = q_vector->adapter;
932 struct napi_struct *napi = &q_vector->napi;
177db6ff
MC		 933 bool is_vlan = (status & IXGBE_RXD_STAT_VP);
934 u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
9a799d71 935
f62bbb5e
JG		 936 if (is_vlan && (tag & VLAN_VID_MASK))
937 __vlan_hwaccel_put_tag(skb, tag);
938
939 if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL))
940 napi_gro_receive(napi, skb);
941 else
942 netif_rx(skb);
9a799d71
AK		 943}
944
e59bd25d
AV		 945/**
946 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
947 * @adapter: address of board private structure
948 * @status_err: hardware indication of status of receive
949 * @skb: skb currently being received and modified
950 **/
9a799d71 951static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter,
8bae1b2b
DS		 952 union ixgbe_adv_rx_desc *rx_desc,
953 struct sk_buff *skb)
9a799d71 954{
8bae1b2b
DS		 955 u32 status_err = le32_to_cpu(rx_desc->wb.upper.status_error);
956
bc8acf2c 957 skb_checksum_none_assert(skb);
9a799d71 958
712744be
JB		 959 /* Rx csum disabled */
960 if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
9a799d71 961 return;
e59bd25d
AV		 962
963 /* if IP and error */
964 if ((status_err & IXGBE_RXD_STAT_IPCS) &&
965 (status_err & IXGBE_RXDADV_ERR_IPE)) {
9a799d71
AK		 966 adapter->hw_csum_rx_error++;
967 return;
968 }
e59bd25d
AV		 969
970 if (!(status_err & IXGBE_RXD_STAT_L4CS))
971 return;
972
973 if (status_err & IXGBE_RXDADV_ERR_TCPE) {
8bae1b2b
DS		 974 u16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
975
976 /*
977 * 82599 errata, UDP frames with a 0 checksum can be marked as
978 * checksum errors.
979 */
980 if ((pkt_info & IXGBE_RXDADV_PKTTYPE_UDP) &&
981 (adapter->hw.mac.type == ixgbe_mac_82599EB))
982 return;
983
e59bd25d
AV		 984 adapter->hw_csum_rx_error++;
985 return;
986 }
987
9a799d71 988 /* It must be a TCP or UDP packet with a valid checksum */
e59bd25d 989 skb->ip_summed = CHECKSUM_UNNECESSARY;
9a799d71
AK		 990}
991
84ea2591 992static inline void ixgbe_release_rx_desc(struct ixgbe_ring *rx_ring, u32 val)
e8e26350
PW		 993{
994 /*
995 * Force memory writes to complete before letting h/w
996 * know there are new descriptors to fetch. (Only
997 * applicable for weak-ordered memory model archs,
998 * such as IA-64).
999 */
1000 wmb();
84ea2591 1001 writel(val, rx_ring->tail);
e8e26350
PW		 1002}
1003
9a799d71
AK		 1004/**
1005 * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split
fc77dc3c
AD		 1006 * @rx_ring: ring to place buffers on
1007 * @cleaned_count: number of buffers to replace
9a799d71 1008 **/
fc77dc3c 1009void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count)
9a799d71 1010{
9a799d71 1011 union ixgbe_adv_rx_desc *rx_desc;
3a581073 1012 struct ixgbe_rx_buffer *bi;
d5f398ed
AD		 1013 struct sk_buff *skb;
1014 u16 i = rx_ring->next_to_use;
9a799d71 1015
fc77dc3c
AD		 1016 /* do nothing if no valid netdev defined */
1017 if (!rx_ring->netdev)
1018 return;
1019
9a799d71 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 1025 if (!skb) {
fc77dc3c 1026 skb = netdev_alloc_skb_ip_align(rx_ring->netdev,
d5f398ed 1027 rx_ring->rx_buf_len);
9a799d71 1028 if (!skb) {
5b7da515 1029 rx_ring->rx_stats.alloc_rx_buff_failed++;
9a799d71
AK		 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 1037 if (!bi->dma) {
b6ec895e 1038 bi->dma = dma_map_single(rx_ring->dev,
d5f398ed 1039 skb->data,
e8e9f696 1040 rx_ring->rx_buf_len,
1b507730 1041 DMA_FROM_DEVICE);
b6ec895e 1042 if (dma_mapping_error(rx_ring->dev, bi->dma)) {
5b7da515 1043 rx_ring->rx_stats.alloc_rx_buff_failed++;
d5f398ed
AD		 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 1050 if (!bi->page) {
fc77dc3c 1051 bi->page = netdev_alloc_page(rx_ring->netdev);
d5f398ed 1052 if (!bi->page) {
5b7da515 1053 rx_ring->rx_stats.alloc_rx_page_failed++;
d5f398ed
AD		 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;
b6ec895e 1061 bi->page_dma = dma_map_page(rx_ring->dev,
d5f398ed
AD		 1062 bi->page,
1063 bi->page_offset,
1064 PAGE_SIZE / 2,
1065 DMA_FROM_DEVICE);
b6ec895e 1066 if (dma_mapping_error(rx_ring->dev,
d5f398ed 1067 bi->page_dma)) {
5b7da515 1068 rx_ring->rx_stats.alloc_rx_page_failed++;
d5f398ed
AD		 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 union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
1155 struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer;
1156 struct sk_buff *skb;
f8212f97 1157 unsigned int i, rsc_count = 0;
7c6e0a43 1158 u32 len, staterr;
177db6ff
MC		 1159 u16 hdr_info;
1160 bool cleaned = false;
9a799d71 1161 int cleaned_count = 0;
d2f4fbe2 1162 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
3d8fd385
YZ		 1163#ifdef IXGBE_FCOE
1164 int ddp_bytes = 0;
1165#endif /* IXGBE_FCOE */
9a799d71
AK		 1166
1167 i = rx_ring->next_to_clean;
31f05a2d 1168 rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
9a799d71
AK		 1169 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
1170 rx_buffer_info = &rx_ring->rx_buffer_info[i];
9a799d71
AK		 1171
1172 while (staterr & IXGBE_RXD_STAT_DD) {
7c6e0a43 1173 u32 upper_len = 0;
9a799d71
AK		 1174 if (*work_done >= work_to_do)
1175 break;
1176 (*work_done)++;
1177
3c945e5b 1178 rmb(); /* read descriptor and rx_buffer_info after status DD */
6e455b89 1179 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
7c6e0a43
JB		 1180 hdr_info = le16_to_cpu(ixgbe_get_hdr_info(rx_desc));
1181 len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
762f4c57 1182 IXGBE_RXDADV_HDRBUFLEN_SHIFT;
9a799d71 1183 upper_len = le16_to_cpu(rx_desc->wb.upper.length);
0b746e08
SN		 1184 if ((len > IXGBE_RX_HDR_SIZE) ||
1185 (upper_len && !(hdr_info & IXGBE_RXDADV_SPH)))
1186 len = IXGBE_RX_HDR_SIZE;
7c6e0a43 1187 } else {
9a799d71 1188 len = le16_to_cpu(rx_desc->wb.upper.length);
7c6e0a43 1189 }
9a799d71
AK		 1190
1191 cleaned = true;
1192 skb = rx_buffer_info->skb;
7ca3bc58 1193 prefetch(skb->data);
9a799d71
AK		 1194 rx_buffer_info->skb = NULL;
1195
21fa4e66 1196 if (rx_buffer_info->dma) {
43634e82
MC		 1197 if ((adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
1198 (!(staterr & IXGBE_RXD_STAT_EOP)) &&
e8171aaa 1199 (!(skb->prev))) {
43634e82
MC		 1200 /*
1201 * When HWRSC is enabled, delay unmapping
1202 * of the first packet. It carries the
1203 * header information, HW may still
1204 * access the header after the writeback.
1205 * Only unmap it when EOP is reached
1206 */
e8171aaa 1207 IXGBE_RSC_CB(skb)->delay_unmap = true;
43634e82 1208 IXGBE_RSC_CB(skb)->dma = rx_buffer_info->dma;
e8171aaa 1209 } else {
b6ec895e 1210 dma_unmap_single(rx_ring->dev,
e8e9f696
JP		 1211 rx_buffer_info->dma,
1212 rx_ring->rx_buf_len,
1213 DMA_FROM_DEVICE);
e8171aaa 1214 }
4f57ca6e 1215 rx_buffer_info->dma = 0;
9a799d71
AK		 1216 skb_put(skb, len);
1217 }
1218
1219 if (upper_len) {
b6ec895e
AD		 1220 dma_unmap_page(rx_ring->dev,
1221 rx_buffer_info->page_dma,
1222 PAGE_SIZE / 2,
1223 DMA_FROM_DEVICE);
9a799d71
AK		 1224 rx_buffer_info->page_dma = 0;
1225 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
e8e9f696
JP		 1226 rx_buffer_info->page,
1227 rx_buffer_info->page_offset,
1228 upper_len);
762f4c57
JB		 1229
1230 if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) ||
1231 (page_count(rx_buffer_info->page) != 1))
1232 rx_buffer_info->page = NULL;
1233 else
1234 get_page(rx_buffer_info->page);
9a799d71
AK		 1235
1236 skb->len += upper_len;
1237 skb->data_len += upper_len;
1238 skb->truesize += upper_len;
1239 }
1240
1241 i++;
1242 if (i == rx_ring->count)
1243 i = 0;
9a799d71 1244
31f05a2d 1245 next_rxd = IXGBE_RX_DESC_ADV(rx_ring, i);
9a799d71 1246 prefetch(next_rxd);
9a799d71 1247 cleaned_count++;
f8212f97 1248
0c19d6af 1249 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)
f8212f97
AD		 1250 rsc_count = ixgbe_get_rsc_count(rx_desc);
1251
1252 if (rsc_count) {
1253 u32 nextp = (staterr & IXGBE_RXDADV_NEXTP_MASK) >>
1254 IXGBE_RXDADV_NEXTP_SHIFT;
1255 next_buffer = &rx_ring->rx_buffer_info[nextp];
f8212f97
AD		 1256 } else {
1257 next_buffer = &rx_ring->rx_buffer_info[i];
1258 }
1259
9a799d71 1260 if (staterr & IXGBE_RXD_STAT_EOP) {
f8212f97 1261 if (skb->prev)
e8e9f696 1262 skb = ixgbe_transform_rsc_queue(skb,
5b7da515 1263 &(rx_ring->rx_stats.rsc_count));
94b982b2 1264 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
e8171aaa 1265 if (IXGBE_RSC_CB(skb)->delay_unmap) {
b6ec895e 1266 dma_unmap_single(rx_ring->dev,
1b507730 1267 IXGBE_RSC_CB(skb)->dma,
e8e9f696 1268 rx_ring->rx_buf_len,
1b507730 1269 DMA_FROM_DEVICE);
fd3686a8 1270 IXGBE_RSC_CB(skb)->dma = 0;
e8171aaa 1271 IXGBE_RSC_CB(skb)->delay_unmap = false;
fd3686a8 1272 }
94b982b2 1273 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED)
5b7da515
AD		 1274 rx_ring->rx_stats.rsc_count +=
1275 skb_shinfo(skb)->nr_frags;
94b982b2 1276 else
5b7da515
AD		 1277 rx_ring->rx_stats.rsc_count++;
1278 rx_ring->rx_stats.rsc_flush++;
94b982b2 1279 }
de1036b1 1280 u64_stats_update_begin(&rx_ring->syncp);
9a799d71
AK		 1281 rx_ring->stats.packets++;
1282 rx_ring->stats.bytes += skb->len;
de1036b1 1283 u64_stats_update_end(&rx_ring->syncp);
9a799d71 1284 } else {
6e455b89 1285 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
f8212f97
AD		 1286 rx_buffer_info->skb = next_buffer->skb;
1287 rx_buffer_info->dma = next_buffer->dma;
1288 next_buffer->skb = skb;
1289 next_buffer->dma = 0;
1290 } else {
1291 skb->next = next_buffer->skb;
1292 skb->next->prev = skb;
1293 }
5b7da515 1294 rx_ring->rx_stats.non_eop_descs++;
9a799d71
AK		 1295 goto next_desc;
1296 }
1297
1298 if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) {
1299 dev_kfree_skb_irq(skb);
1300 goto next_desc;
1301 }
1302
8bae1b2b 1303 ixgbe_rx_checksum(adapter, rx_desc, skb);
d2f4fbe2
AV		 1304
1305 /* probably a little skewed due to removing CRC */
1306 total_rx_bytes += skb->len;
1307 total_rx_packets++;
1308
fc77dc3c 1309 skb->protocol = eth_type_trans(skb, rx_ring->netdev);
332d4a7d
YZ		 1310#ifdef IXGBE_FCOE
1311 /* if ddp, not passing to ULD unless for FCP_RSP or error */
3d8fd385
YZ		 1312 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
1313 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb);
1314 if (!ddp_bytes)
332d4a7d 1315 goto next_desc;
3d8fd385 1316 }
332d4a7d 1317#endif /* IXGBE_FCOE */
fdaff1ce 1318 ixgbe_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
9a799d71
AK		 1319
1320next_desc:
1321 rx_desc->wb.upper.status_error = 0;
1322
1323 /* return some buffers to hardware, one at a time is too slow */
1324 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) {
fc77dc3c 1325 ixgbe_alloc_rx_buffers(rx_ring, cleaned_count);
9a799d71
AK		 1326 cleaned_count = 0;
1327 }
1328
1329 /* use prefetched values */
1330 rx_desc = next_rxd;
f8212f97 1331 rx_buffer_info = &rx_ring->rx_buffer_info[i];
9a799d71
AK		 1332
1333 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
177db6ff
MC		 1334 }
1335
9a799d71
AK		 1336 rx_ring->next_to_clean = i;
1337 cleaned_count = IXGBE_DESC_UNUSED(rx_ring);
1338
1339 if (cleaned_count)
fc77dc3c 1340 ixgbe_alloc_rx_buffers(rx_ring, cleaned_count);
9a799d71 1341
3d8fd385
YZ		 1342#ifdef IXGBE_FCOE
1343 /* include DDPed FCoE data */
1344 if (ddp_bytes > 0) {
1345 unsigned int mss;
1346
fc77dc3c 1347 mss = rx_ring->netdev->mtu - sizeof(struct fcoe_hdr) -
3d8fd385
YZ		 1348 sizeof(struct fc_frame_header) -
1349 sizeof(struct fcoe_crc_eof);
1350 if (mss > 512)
1351 mss &= ~511;
1352 total_rx_bytes += ddp_bytes;
1353 total_rx_packets += DIV_ROUND_UP(ddp_bytes, mss);
1354 }
1355#endif /* IXGBE_FCOE */
1356
f494e8fa
AV		 1357 rx_ring->total_packets += total_rx_packets;
1358 rx_ring->total_bytes += total_rx_bytes;
f494e8fa 1359
9a799d71
AK		 1360 return cleaned;
1361}
1362
021230d4 1363static int ixgbe_clean_rxonly(struct napi_struct *, int);
9a799d71
AK		 1364/**
1365 * ixgbe_configure_msix - Configure MSI-X hardware
1366 * @adapter: board private structure
1367 *
1368 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
1369 * interrupts.
1370 **/
1371static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
1372{
021230d4
AV		 1373 struct ixgbe_q_vector *q_vector;
1374 int i, j, q_vectors, v_idx, r_idx;
1375 u32 mask;
9a799d71 1376
021230d4 1377 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
9a799d71 1378
4df10466
JB		 1379 /*
1380 * Populate the IVAR table and set the ITR values to the
021230d4
AV		 1381 * corresponding register.
1382 */
1383 for (v_idx = 0; v_idx < q_vectors; v_idx++) {
7a921c93 1384 q_vector = adapter->q_vector[v_idx];
984b3f57 1385 /* XXX for_each_set_bit(...) */
021230d4 1386 r_idx = find_first_bit(q_vector->rxr_idx,
e8e9f696 1387 adapter->num_rx_queues);
021230d4
AV		 1388
1389 for (i = 0; i < q_vector->rxr_count; i++) {
4a0b9ca0 1390 j = adapter->rx_ring[r_idx]->reg_idx;
e8e26350 1391 ixgbe_set_ivar(adapter, 0, j, v_idx);
021230d4 1392 r_idx = find_next_bit(q_vector->rxr_idx,
e8e9f696
JP		 1393 adapter->num_rx_queues,
1394 r_idx + 1);
021230d4
AV		 1395 }
1396 r_idx = find_first_bit(q_vector->txr_idx,
e8e9f696 1397 adapter->num_tx_queues);
021230d4
AV		 1398
1399 for (i = 0; i < q_vector->txr_count; i++) {
4a0b9ca0 1400 j = adapter->tx_ring[r_idx]->reg_idx;
e8e26350 1401 ixgbe_set_ivar(adapter, 1, j, v_idx);
021230d4 1402 r_idx = find_next_bit(q_vector->txr_idx,
e8e9f696
JP		 1403 adapter->num_tx_queues,
1404 r_idx + 1);
021230d4
AV		 1405 }
1406
021230d4 1407 if (q_vector->txr_count && !q_vector->rxr_count)
f7554a2b
NS		 1408 /* tx only */
1409 q_vector->eitr = adapter->tx_eitr_param;
509ee935 1410 else if (q_vector->rxr_count)
f7554a2b
NS		 1411 /* rx or mixed */
1412 q_vector->eitr = adapter->rx_eitr_param;
021230d4 1413
fe49f04a 1414 ixgbe_write_eitr(q_vector);
b25ebfd2
PW		 1415 /* If Flow Director is enabled, set interrupt affinity */
1416 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
1417 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) {
1418 /*
1419 * Allocate the affinity_hint cpumask, assign the mask
1420 * for this vector, and set our affinity_hint for
1421 * this irq.
1422 */
1423 if (!alloc_cpumask_var(&q_vector->affinity_mask,
1424 GFP_KERNEL))
1425 return;
1426 cpumask_set_cpu(v_idx, q_vector->affinity_mask);
1427 irq_set_affinity_hint(adapter->msix_entries[v_idx].vector,
1428 q_vector->affinity_mask);
1429 }
9a799d71
AK		 1430 }
1431
e8e26350
PW		 1432 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
1433 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX,
e8e9f696 1434 v_idx);
e8e26350
PW		 1435 else if (adapter->hw.mac.type == ixgbe_mac_82599EB)
1436 ixgbe_set_ivar(adapter, -1, 1, v_idx);
021230d4
AV		 1437 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
1438
41fb9248 1439 /* set up to autoclear timer, and the vectors */
021230d4 1440 mask = IXGBE_EIMS_ENABLE_MASK;
1cdd1ec8
GR		 1441 if (adapter->num_vfs)
1442 mask &= ~(IXGBE_EIMS_OTHER |
1443 IXGBE_EIMS_MAILBOX |
1444 IXGBE_EIMS_LSC);
1445 else
1446 mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC);
021230d4 1447 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask);
9a799d71
AK		 1448}
1449
f494e8fa
AV		 1450enum latency_range {
1451 lowest_latency = 0,
1452 low_latency = 1,
1453 bulk_latency = 2,
1454 latency_invalid = 255
1455};
1456
1457/**
1458 * ixgbe_update_itr - update the dynamic ITR value based on statistics
1459 * @adapter: pointer to adapter
1460 * @eitr: eitr setting (ints per sec) to give last timeslice
1461 * @itr_setting: current throttle rate in ints/second
1462 * @packets: the number of packets during this measurement interval
1463 * @bytes: the number of bytes during this measurement interval
1464 *
1465 * Stores a new ITR value based on packets and byte
1466 * counts during the last interrupt. The advantage of per interrupt
1467 * computation is faster updates and more accurate ITR for the current
1468 * traffic pattern. Constants in this function were computed
1469 * based on theoretical maximum wire speed and thresholds were set based
1470 * on testing data as well as attempting to minimize response time
1471 * while increasing bulk throughput.
1472 * this functionality is controlled by the InterruptThrottleRate module
1473 * parameter (see ixgbe_param.c)
1474 **/
1475static u8 ixgbe_update_itr(struct ixgbe_adapter *adapter,
e8e9f696
JP		 1476 u32 eitr, u8 itr_setting,
1477 int packets, int bytes)
f494e8fa
AV		 1478{
1479 unsigned int retval = itr_setting;
1480 u32 timepassed_us;
1481 u64 bytes_perint;
1482
1483 if (packets == 0)
1484 goto update_itr_done;
1485
1486
1487 /* simple throttlerate management
1488 * 0-20MB/s lowest (100000 ints/s)
1489 * 20-100MB/s low (20000 ints/s)
1490 * 100-1249MB/s bulk (8000 ints/s)
1491 */
1492 /* what was last interrupt timeslice? */
1493 timepassed_us = 1000000/eitr;
1494 bytes_perint = bytes / timepassed_us; /* bytes/usec */
1495
1496 switch (itr_setting) {
1497 case lowest_latency:
1498 if (bytes_perint > adapter->eitr_low)
1499 retval = low_latency;
1500 break;
1501 case low_latency:
1502 if (bytes_perint > adapter->eitr_high)
1503 retval = bulk_latency;
1504 else if (bytes_perint <= adapter->eitr_low)
1505 retval = lowest_latency;
1506 break;
1507 case bulk_latency:
1508 if (bytes_perint <= adapter->eitr_high)
1509 retval = low_latency;
1510 break;
1511 }
1512
1513update_itr_done:
1514 return retval;
1515}
1516
509ee935
JB		 1517/**
1518 * ixgbe_write_eitr - write EITR register in hardware specific way
fe49f04a 1519 * @q_vector: structure containing interrupt and ring information
509ee935
JB		 1520 *
1521 * This function is made to be called by ethtool and by the driver
1522 * when it needs to update EITR registers at runtime. Hardware
1523 * specific quirks/differences are taken care of here.
1524 */
fe49f04a 1525void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector)
509ee935 1526{
fe49f04a 1527 struct ixgbe_adapter *adapter = q_vector->adapter;
509ee935 1528 struct ixgbe_hw *hw = &adapter->hw;
fe49f04a
AD		 1529 int v_idx = q_vector->v_idx;
1530 u32 itr_reg = EITR_INTS_PER_SEC_TO_REG(q_vector->eitr);
1531
509ee935
JB		 1532 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1533 /* must write high and low 16 bits to reset counter */
1534 itr_reg |= (itr_reg << 16);
1535 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
f8d1dcaf
JB		 1536 /*
1537 * 82599 can support a value of zero, so allow it for
1538 * max interrupt rate, but there is an errata where it can
1539 * not be zero with RSC
1540 */
1541 if (itr_reg == 8 &&
1542 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
1543 itr_reg = 0;
1544
509ee935
JB		 1545 /*
1546 * set the WDIS bit to not clear the timer bits and cause an
1547 * immediate assertion of the interrupt
1548 */
1549 itr_reg |= IXGBE_EITR_CNT_WDIS;
1550 }
1551 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg);
1552}
1553
f494e8fa
AV		 1554static void ixgbe_set_itr_msix(struct ixgbe_q_vector *q_vector)
1555{
1556 struct ixgbe_adapter *adapter = q_vector->adapter;
f494e8fa
AV		 1557 u32 new_itr;
1558 u8 current_itr, ret_itr;
fe49f04a 1559 int i, r_idx;
f494e8fa
AV		 1560 struct ixgbe_ring *rx_ring, *tx_ring;
1561
1562 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1563 for (i = 0; i < q_vector->txr_count; i++) {
4a0b9ca0 1564 tx_ring = adapter->tx_ring[r_idx];
f494e8fa 1565 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
e8e9f696
JP		 1566 q_vector->tx_itr,
1567 tx_ring->total_packets,
1568 tx_ring->total_bytes);
f494e8fa
AV		 1569 /* if the result for this queue would decrease interrupt
1570 * rate for this vector then use that result */
30efa5a3 1571 q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ?
e8e9f696 1572 q_vector->tx_itr - 1 : ret_itr);
f494e8fa 1573 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
e8e9f696 1574 r_idx + 1);
f494e8fa
AV		 1575 }
1576
1577 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1578 for (i = 0; i < q_vector->rxr_count; i++) {
4a0b9ca0 1579 rx_ring = adapter->rx_ring[r_idx];
f494e8fa 1580 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
e8e9f696
JP		 1581 q_vector->rx_itr,
1582 rx_ring->total_packets,
1583 rx_ring->total_bytes);
f494e8fa
AV		 1584 /* if the result for this queue would decrease interrupt
1585 * rate for this vector then use that result */
30efa5a3 1586 q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ?
e8e9f696 1587 q_vector->rx_itr - 1 : ret_itr);
f494e8fa 1588 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
e8e9f696 1589 r_idx + 1);
f494e8fa
AV		 1590 }
1591
30efa5a3 1592 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
f494e8fa
AV		 1593
1594 switch (current_itr) {
1595 /* counts and packets in update_itr are dependent on these numbers */
1596 case lowest_latency:
1597 new_itr = 100000;
1598 break;
1599 case low_latency:
1600 new_itr = 20000; /* aka hwitr = ~200 */
1601 break;
1602 case bulk_latency:
1603 default:
1604 new_itr = 8000;
1605 break;
1606 }
1607
1608 if (new_itr != q_vector->eitr) {
fe49f04a
AD		 1609 /* do an exponential smoothing */
1610 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
509ee935
JB		 1611
1612 /* save the algorithm value here, not the smoothed one */
1613 q_vector->eitr = new_itr;
fe49f04a
AD		 1614
1615 ixgbe_write_eitr(q_vector);
f494e8fa 1616 }
f494e8fa
AV		 1617}
1618
119fc60a
MC		 1619/**
1620 * ixgbe_check_overtemp_task - worker thread to check over tempurature
1621 * @work: pointer to work_struct containing our data
1622 **/
1623static void ixgbe_check_overtemp_task(struct work_struct *work)
1624{
1625 struct ixgbe_adapter *adapter = container_of(work,
e8e9f696
JP		 1626 struct ixgbe_adapter,
1627 check_overtemp_task);
119fc60a
MC		 1628 struct ixgbe_hw *hw = &adapter->hw;
1629 u32 eicr = adapter->interrupt_event;
1630
7ca647bd
JP		 1631 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE))
1632 return;
1633
1634 switch (hw->device_id) {
1635 case IXGBE_DEV_ID_82599_T3_LOM: {
1636 u32 autoneg;
1637 bool link_up = false;
1638
1639 if (hw->mac.ops.check_link)
1640 hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
1641
1642 if (((eicr & IXGBE_EICR_GPI_SDP0) && (!link_up)) ||
1643 (eicr & IXGBE_EICR_LSC))
1644 /* Check if this is due to overtemp */
1645 if (hw->phy.ops.check_overtemp(hw) == IXGBE_ERR_OVERTEMP)
1646 break;
1647 return;
1648 }
1649 default:
1650 if (!(eicr & IXGBE_EICR_GPI_SDP0))
119fc60a 1651 return;
7ca647bd 1652 break;
119fc60a 1653 }
7ca647bd
JP		 1654 e_crit(drv,
1655 "Network adapter has been stopped because it has over heated. "
1656 "Restart the computer. If the problem persists, "
1657 "power off the system and replace the adapter\n");
1658 /* write to clear the interrupt */
1659 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP0);
119fc60a
MC		 1660}
1661
0befdb3e
JB		 1662static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
1663{
1664 struct ixgbe_hw *hw = &adapter->hw;
1665
1666 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) &&
1667 (eicr & IXGBE_EICR_GPI_SDP1)) {
396e799c 1668 e_crit(probe, "Fan has stopped, replace the adapter\n");
0befdb3e
JB		 1669 /* write to clear the interrupt */
1670 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
1671 }
1672}
cf8280ee 1673
e8e26350
PW		 1674static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr)
1675{
1676 struct ixgbe_hw *hw = &adapter->hw;
1677
1678 if (eicr & IXGBE_EICR_GPI_SDP1) {
1679 /* Clear the interrupt */
1680 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
1681 schedule_work(&adapter->multispeed_fiber_task);
1682 } else if (eicr & IXGBE_EICR_GPI_SDP2) {
1683 /* Clear the interrupt */
1684 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP2);
1685 schedule_work(&adapter->sfp_config_module_task);
1686 } else {
1687 /* Interrupt isn't for us... */
1688 return;
1689 }
1690}
1691
cf8280ee
JB		 1692static void ixgbe_check_lsc(struct ixgbe_adapter *adapter)
1693{
1694 struct ixgbe_hw *hw = &adapter->hw;
1695
1696 adapter->lsc_int++;
1697 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
1698 adapter->link_check_timeout = jiffies;
1699 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
1700 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC);
8a0717f3 1701 IXGBE_WRITE_FLUSH(hw);
cf8280ee
JB		 1702 schedule_work(&adapter->watchdog_task);
1703 }
1704}
1705
9a799d71
AK		 1706static irqreturn_t ixgbe_msix_lsc(int irq, void *data)
1707{
1708 struct net_device *netdev = data;
1709 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1710 struct ixgbe_hw *hw = &adapter->hw;
54037505
DS		 1711 u32 eicr;
1712
1713 /*
1714 * Workaround for Silicon errata. Use clear-by-write instead
1715 * of clear-by-read. Reading with EICS will return the
1716 * interrupt causes without clearing, which later be done
1717 * with the write to EICR.
1718 */
1719 eicr = IXGBE_READ_REG(hw, IXGBE_EICS);
1720 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr);
9a799d71 1721
cf8280ee
JB		 1722 if (eicr & IXGBE_EICR_LSC)
1723 ixgbe_check_lsc(adapter);
d4f80882 1724
1cdd1ec8
GR		 1725 if (eicr & IXGBE_EICR_MAILBOX)
1726 ixgbe_msg_task(adapter);
1727
e8e26350
PW		 1728 if (hw->mac.type == ixgbe_mac_82598EB)
1729 ixgbe_check_fan_failure(adapter, eicr);
0befdb3e 1730
c4cf55e5 1731 if (hw->mac.type == ixgbe_mac_82599EB) {
e8e26350 1732 ixgbe_check_sfp_event(adapter, eicr);
119fc60a
MC		 1733 adapter->interrupt_event = eicr;
1734 if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
1735 ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC)))
1736 schedule_work(&adapter->check_overtemp_task);
c4cf55e5
PWJ		 1737
1738 /* Handle Flow Director Full threshold interrupt */
1739 if (eicr & IXGBE_EICR_FLOW_DIR) {
1740 int i;
1741 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_FLOW_DIR);
1742 /* Disable transmits before FDIR Re-initialization */
1743 netif_tx_stop_all_queues(netdev);
1744 for (i = 0; i < adapter->num_tx_queues; i++) {
1745 struct ixgbe_ring *tx_ring =
e8e9f696 1746 adapter->tx_ring[i];
c4cf55e5 1747 if (test_and_clear_bit(__IXGBE_FDIR_INIT_DONE,
e8e9f696 1748 &tx_ring->reinit_state))
c4cf55e5
PWJ		 1749 schedule_work(&adapter->fdir_reinit_task);
1750 }
1751 }
1752 }
d4f80882
AV		 1753 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1754 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER);
9a799d71
AK		 1755
1756 return IRQ_HANDLED;
1757}
1758
fe49f04a
AD		 1759static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter,
1760 u64 qmask)
1761{
1762 u32 mask;
1763
1764 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1765 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
1766 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
1767 } else {
1768 mask = (qmask & 0xFFFFFFFF);
1769 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(0), mask);
1770 mask = (qmask >> 32);
1771 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(1), mask);
1772 }
1773 /* skip the flush */
1774}
1775
1776static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter,
e8e9f696 1777 u64 qmask)
fe49f04a
AD		 1778{
1779 u32 mask;
1780
1781 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1782 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
1783 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, mask);
1784 } else {
1785 mask = (qmask & 0xFFFFFFFF);
1786 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), mask);
1787 mask = (qmask >> 32);
1788 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), mask);
1789 }
1790 /* skip the flush */
1791}
1792
9a799d71
AK		 1793static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data)
1794{
021230d4
AV		 1795 struct ixgbe_q_vector *q_vector = data;
1796 struct ixgbe_adapter *adapter = q_vector->adapter;
3a581073 1797 struct ixgbe_ring *tx_ring;
021230d4
AV		 1798 int i, r_idx;
1799
1800 if (!q_vector->txr_count)
1801 return IRQ_HANDLED;
1802
1803 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1804 for (i = 0; i < q_vector->txr_count; i++) {
4a0b9ca0 1805 tx_ring = adapter->tx_ring[r_idx];
3a581073
JB		 1806 tx_ring->total_bytes = 0;
1807 tx_ring->total_packets = 0;
021230d4 1808 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
e8e9f696 1809 r_idx + 1);
021230d4 1810 }
9a799d71 1811
9b471446 1812 /* EIAM disabled interrupts (on this vector) for us */
91281fd3
AD		 1813 napi_schedule(&q_vector->napi);
1814
9a799d71
AK		 1815 return IRQ_HANDLED;
1816}
1817
021230d4
AV		 1818/**
1819 * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
1820 * @irq: unused
1821 * @data: pointer to our q_vector struct for this interrupt vector
1822 **/
9a799d71
AK		 1823static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data)
1824{
021230d4
AV		 1825 struct ixgbe_q_vector *q_vector = data;
1826 struct ixgbe_adapter *adapter = q_vector->adapter;
3a581073 1827 struct ixgbe_ring *rx_ring;
021230d4 1828 int r_idx;
30efa5a3 1829 int i;
021230d4
AV		 1830
1831 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
30efa5a3 1832 for (i = 0; i < q_vector->rxr_count; i++) {
4a0b9ca0 1833 rx_ring = adapter->rx_ring[r_idx];
30efa5a3
JB		 1834 rx_ring->total_bytes = 0;
1835 rx_ring->total_packets = 0;
1836 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
e8e9f696 1837 r_idx + 1);
30efa5a3
JB		 1838 }
1839
021230d4
AV		 1840 if (!q_vector->rxr_count)
1841 return IRQ_HANDLED;
1842
021230d4 1843 /* disable interrupts on this vector only */
9b471446 1844 /* EIAM disabled interrupts (on this vector) for us */
288379f0 1845 napi_schedule(&q_vector->napi);
021230d4
AV		 1846
1847 return IRQ_HANDLED;
1848}
1849
1850static irqreturn_t ixgbe_msix_clean_many(int irq, void *data)
1851{
91281fd3
AD		 1852 struct ixgbe_q_vector *q_vector = data;
1853 struct ixgbe_adapter *adapter = q_vector->adapter;
1854 struct ixgbe_ring *ring;
1855 int r_idx;
1856 int i;
1857
1858 if (!q_vector->txr_count && !q_vector->rxr_count)
1859 return IRQ_HANDLED;
1860
1861 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1862 for (i = 0; i < q_vector->txr_count; i++) {
4a0b9ca0 1863 ring = adapter->tx_ring[r_idx];
91281fd3
AD		 1864 ring->total_bytes = 0;
1865 ring->total_packets = 0;
1866 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
e8e9f696 1867 r_idx + 1);
91281fd3
AD		 1868 }
1869
1870 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1871 for (i = 0; i < q_vector->rxr_count; i++) {
4a0b9ca0 1872 ring = adapter->rx_ring[r_idx];
91281fd3
AD		 1873 ring->total_bytes = 0;
1874 ring->total_packets = 0;
1875 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
e8e9f696 1876 r_idx + 1);
91281fd3
AD		 1877 }
1878
9b471446 1879 /* EIAM disabled interrupts (on this vector) for us */
91281fd3 1880 napi_schedule(&q_vector->napi);
9a799d71 1881
9a799d71
AK		 1882 return IRQ_HANDLED;
1883}
1884
021230d4
AV		 1885/**
1886 * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine
1887 * @napi: napi struct with our devices info in it
1888 * @budget: amount of work driver is allowed to do this pass, in packets
1889 *
f0848276
JB		 1890 * This function is optimized for cleaning one queue only on a single
1891 * q_vector!!!
021230d4 1892 **/
9a799d71
AK		 1893static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget)
1894{
021230d4 1895 struct ixgbe_q_vector *q_vector =
e8e9f696 1896 container_of(napi, struct ixgbe_q_vector, napi);
021230d4 1897 struct ixgbe_adapter *adapter = q_vector->adapter;
f0848276 1898 struct ixgbe_ring *rx_ring = NULL;
9a799d71 1899 int work_done = 0;
021230d4 1900 long r_idx;
9a799d71 1901
021230d4 1902 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
4a0b9ca0 1903 rx_ring = adapter->rx_ring[r_idx];
5dd2d332 1904#ifdef CONFIG_IXGBE_DCA
bd0362dd 1905 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
3a581073 1906 ixgbe_update_rx_dca(adapter, rx_ring);
bd0362dd 1907#endif
9a799d71 1908
78b6f4ce 1909 ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
9a799d71 1910
021230d4
AV		 1911 /* If all Rx work done, exit the polling mode */
1912 if (work_done < budget) {
288379f0 1913 napi_complete(napi);
f7554a2b 1914 if (adapter->rx_itr_setting & 1)
f494e8fa 1915 ixgbe_set_itr_msix(q_vector);
9a799d71 1916 if (!test_bit(__IXGBE_DOWN, &adapter->state))
fe49f04a 1917 ixgbe_irq_enable_queues(adapter,
e8e9f696 1918 ((u64)1 << q_vector->v_idx));
9a799d71
AK		 1919 }
1920
1921 return work_done;
1922}
1923
f0848276 1924/**
91281fd3 1925 * ixgbe_clean_rxtx_many - msix (aka one shot) rx clean routine
f0848276
JB		 1926 * @napi: napi struct with our devices info in it
1927 * @budget: amount of work driver is allowed to do this pass, in packets
1928 *
1929 * This function will clean more than one rx queue associated with a
1930 * q_vector.
1931 **/
91281fd3 1932static int ixgbe_clean_rxtx_many(struct napi_struct *napi, int budget)
f0848276
JB		 1933{
1934 struct ixgbe_q_vector *q_vector =
e8e9f696 1935 container_of(napi, struct ixgbe_q_vector, napi);
f0848276 1936 struct ixgbe_adapter *adapter = q_vector->adapter;
91281fd3 1937 struct ixgbe_ring *ring = NULL;
f0848276
JB		 1938 int work_done = 0, i;
1939 long r_idx;
91281fd3
AD		 1940 bool tx_clean_complete = true;
1941
1942 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1943 for (i = 0; i < q_vector->txr_count; i++) {
4a0b9ca0 1944 ring = adapter->tx_ring[r_idx];
91281fd3
AD		 1945#ifdef CONFIG_IXGBE_DCA
1946 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1947 ixgbe_update_tx_dca(adapter, ring);
1948#endif
1949 tx_clean_complete &= ixgbe_clean_tx_irq(q_vector, ring);
1950 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
e8e9f696 1951 r_idx + 1);
91281fd3 1952 }
f0848276
JB		 1953
1954 /* attempt to distribute budget to each queue fairly, but don't allow
1955 * the budget to go below 1 because we'll exit polling */
1956 budget /= (q_vector->rxr_count ?: 1);
1957 budget = max(budget, 1);
1958 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1959 for (i = 0; i < q_vector->rxr_count; i++) {
4a0b9ca0 1960 ring = adapter->rx_ring[r_idx];
5dd2d332 1961#ifdef CONFIG_IXGBE_DCA
f0848276 1962 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
91281fd3 1963 ixgbe_update_rx_dca(adapter, ring);
f0848276 1964#endif
91281fd3 1965 ixgbe_clean_rx_irq(q_vector, ring, &work_done, budget);
f0848276 1966 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
e8e9f696 1967 r_idx + 1);
f0848276
JB		 1968 }
1969
1970 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
4a0b9ca0 1971 ring = adapter->rx_ring[r_idx];
f0848276 1972 /* If all Rx work done, exit the polling mode */
7f821875 1973 if (work_done < budget) {
288379f0 1974 napi_complete(napi);
f7554a2b 1975 if (adapter->rx_itr_setting & 1)
f0848276
JB		 1976 ixgbe_set_itr_msix(q_vector);
1977 if (!test_bit(__IXGBE_DOWN, &adapter->state))
fe49f04a 1978 ixgbe_irq_enable_queues(adapter,
e8e9f696 1979 ((u64)1 << q_vector->v_idx));
f0848276
JB		 1980 return 0;
1981 }
1982
1983 return work_done;
1984}
91281fd3
AD		 1985
1986/**
1987 * ixgbe_clean_txonly - msix (aka one shot) tx clean routine
1988 * @napi: napi struct with our devices info in it
1989 * @budget: amount of work driver is allowed to do this pass, in packets
1990 *
1991 * This function is optimized for cleaning one queue only on a single
1992 * q_vector!!!
1993 **/
1994static int ixgbe_clean_txonly(struct napi_struct *napi, int budget)
1995{
1996 struct ixgbe_q_vector *q_vector =
e8e9f696 1997 container_of(napi, struct ixgbe_q_vector, napi);
91281fd3
AD		 1998 struct ixgbe_adapter *adapter = q_vector->adapter;
1999 struct ixgbe_ring *tx_ring = NULL;
2000 int work_done = 0;
2001 long r_idx;
2002
2003 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
4a0b9ca0 2004 tx_ring = adapter->tx_ring[r_idx];
91281fd3
AD		 2005#ifdef CONFIG_IXGBE_DCA
2006 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
2007 ixgbe_update_tx_dca(adapter, tx_ring);
2008#endif
2009
2010 if (!ixgbe_clean_tx_irq(q_vector, tx_ring))
2011 work_done = budget;
2012
f7554a2b 2013 /* If all Tx work done, exit the polling mode */
91281fd3
AD		 2014 if (work_done < budget) {
2015 napi_complete(napi);
f7554a2b 2016 if (adapter->tx_itr_setting & 1)
91281fd3
AD		 2017 ixgbe_set_itr_msix(q_vector);
2018 if (!test_bit(__IXGBE_DOWN, &adapter->state))
e8e9f696
JP		 2019 ixgbe_irq_enable_queues(adapter,
2020 ((u64)1 << q_vector->v_idx));
91281fd3
AD		 2021 }
2022
2023 return work_done;
2024}
2025
021230d4 2026static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx,
e8e9f696 2027 int r_idx)
021230d4 2028{
7a921c93
AD		 2029 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
2030
2031 set_bit(r_idx, q_vector->rxr_idx);
2032 q_vector->rxr_count++;
021230d4
AV		 2033}
2034
2035static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx,
e8e9f696 2036 int t_idx)
021230d4 2037{
7a921c93
AD		 2038 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
2039
2040 set_bit(t_idx, q_vector->txr_idx);
2041 q_vector->txr_count++;
021230d4
AV		 2042}
2043
9a799d71 2044/**
021230d4
AV		 2045 * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors
2046 * @adapter: board private structure to initialize
2047 * @vectors: allotted vector count for descriptor rings
9a799d71 2048 *
021230d4
AV		 2049 * This function maps descriptor rings to the queue-specific vectors
2050 * we were allotted through the MSI-X enabling code. Ideally, we'd have
2051 * one vector per ring/queue, but on a constrained vector budget, we
2052 * group the rings as "efficiently" as possible. You would add new
2053 * mapping configurations in here.
9a799d71 2054 **/
021230d4 2055static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter,
e8e9f696 2056 int vectors)
021230d4
AV		 2057{
2058 int v_start = 0;
2059 int rxr_idx = 0, txr_idx = 0;
2060 int rxr_remaining = adapter->num_rx_queues;
2061 int txr_remaining = adapter->num_tx_queues;
2062 int i, j;
2063 int rqpv, tqpv;
2064 int err = 0;
2065
2066 /* No mapping required if MSI-X is disabled. */
2067 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
2068 goto out;
9a799d71 2069
021230d4
AV		 2070 /*
2071 * The ideal configuration...
2072 * We have enough vectors to map one per queue.
2073 */
2074 if (vectors == adapter->num_rx_queues + adapter->num_tx_queues) {
2075 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
2076 map_vector_to_rxq(adapter, v_start, rxr_idx);
9a799d71 2077
021230d4
AV		 2078 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
2079 map_vector_to_txq(adapter, v_start, txr_idx);
9a799d71 2080
9a799d71 2081 goto out;
021230d4 2082 }
9a799d71 2083
021230d4
AV		 2084 /*
2085 * If we don't have enough vectors for a 1-to-1
2086 * mapping, we'll have to group them so there are
2087 * multiple queues per vector.
2088 */
2089 /* Re-adjusting *qpv takes care of the remainder. */
2090 for (i = v_start; i < vectors; i++) {
2091 rqpv = DIV_ROUND_UP(rxr_remaining, vectors - i);
2092 for (j = 0; j < rqpv; j++) {
2093 map_vector_to_rxq(adapter, i, rxr_idx);
2094 rxr_idx++;
2095 rxr_remaining--;
2096 }
2097 }
2098 for (i = v_start; i < vectors; i++) {
2099 tqpv = DIV_ROUND_UP(txr_remaining, vectors - i);
2100 for (j = 0; j < tqpv; j++) {
2101 map_vector_to_txq(adapter, i, txr_idx);
2102 txr_idx++;
2103 txr_remaining--;
9a799d71 2104 }
9a799d71
AK		 2105 }
2106
021230d4
AV		 2107out:
2108 return err;
2109}
2110
2111/**
2112 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
2113 * @adapter: board private structure
2114 *
2115 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
2116 * interrupts from the kernel.
2117 **/
2118static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
2119{
2120 struct net_device *netdev = adapter->netdev;
2121 irqreturn_t (*handler)(int, void *);
2122 int i, vector, q_vectors, err;
e8e9f696 2123 int ri = 0, ti = 0;
021230d4
AV		 2124
2125 /* Decrement for Other and TCP Timer vectors */
2126 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2127
2128 /* Map the Tx/Rx rings to the vectors we were allotted. */
2129 err = ixgbe_map_rings_to_vectors(adapter, q_vectors);
2130 if (err)
2131 goto out;
2132
2133#define SET_HANDLER(_v) ((!(_v)->rxr_count) ? &ixgbe_msix_clean_tx : \
e8e9f696
JP		 2134 (!(_v)->txr_count) ? &ixgbe_msix_clean_rx : \
2135 &ixgbe_msix_clean_many)
021230d4 2136 for (vector = 0; vector < q_vectors; vector++) {
7a921c93 2137 handler = SET_HANDLER(adapter->q_vector[vector]);
cb13fc20 2138
e8e9f696 2139 if (handler == &ixgbe_msix_clean_rx) {
cb13fc20
RO		 2140 sprintf(adapter->name[vector], "%s-%s-%d",
2141 netdev->name, "rx", ri++);
e8e9f696 2142 } else if (handler == &ixgbe_msix_clean_tx) {
cb13fc20
RO		 2143 sprintf(adapter->name[vector], "%s-%s-%d",
2144 netdev->name, "tx", ti++);
e8e9f696 2145 } else
cb13fc20
RO		 2146 sprintf(adapter->name[vector], "%s-%s-%d",
2147 netdev->name, "TxRx", vector);
2148
021230d4 2149 err = request_irq(adapter->msix_entries[vector].vector,
e8e9f696
JP		 2150 handler, 0, adapter->name[vector],
2151 adapter->q_vector[vector]);
9a799d71 2152 if (err) {
396e799c 2153 e_err(probe, "request_irq failed for MSIX interrupt "
849c4542 2154 "Error: %d\n", err);
021230d4 2155 goto free_queue_irqs;
9a799d71 2156 }
9a799d71
AK		 2157 }
2158
021230d4
AV		 2159 sprintf(adapter->name[vector], "%s:lsc", netdev->name);
2160 err = request_irq(adapter->msix_entries[vector].vector,
e8e9f696 2161 ixgbe_msix_lsc, 0, adapter->name[vector], netdev);
9a799d71 2162 if (err) {
396e799c 2163 e_err(probe, "request_irq for msix_lsc failed: %d\n", err);
021230d4 2164 goto free_queue_irqs;
9a799d71
AK		 2165 }
2166
9a799d71
AK		 2167 return 0;
2168
021230d4
AV		 2169free_queue_irqs:
2170 for (i = vector - 1; i >= 0; i--)
2171 free_irq(adapter->msix_entries[--vector].vector,
e8e9f696 2172 adapter->q_vector[i]);
021230d4
AV		 2173 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
2174 pci_disable_msix(adapter->pdev);
9a799d71
AK		 2175 kfree(adapter->msix_entries);
2176 adapter->msix_entries = NULL;
021230d4 2177out:
9a799d71
AK		 2178 return err;
2179}
2180
f494e8fa
AV		 2181static void ixgbe_set_itr(struct ixgbe_adapter *adapter)
2182{
7a921c93 2183 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
f494e8fa
AV		 2184 u8 current_itr;
2185 u32 new_itr = q_vector->eitr;
4a0b9ca0
PW		 2186 struct ixgbe_ring *rx_ring = adapter->rx_ring[0];
2187 struct ixgbe_ring *tx_ring = adapter->tx_ring[0];
f494e8fa 2188
30efa5a3 2189 q_vector->tx_itr = ixgbe_update_itr(adapter, new_itr,
e8e9f696
JP		 2190 q_vector->tx_itr,
2191 tx_ring->total_packets,
2192 tx_ring->total_bytes);
30efa5a3 2193 q_vector->rx_itr = ixgbe_update_itr(adapter, new_itr,
e8e9f696
JP		 2194 q_vector->rx_itr,
2195 rx_ring->total_packets,
2196 rx_ring->total_bytes);
f494e8fa 2197
30efa5a3 2198 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
f494e8fa
AV		 2199
2200 switch (current_itr) {
2201 /* counts and packets in update_itr are dependent on these numbers */
2202 case lowest_latency:
2203 new_itr = 100000;
2204 break;
2205 case low_latency:
2206 new_itr = 20000; /* aka hwitr = ~200 */
2207 break;
2208 case bulk_latency:
2209 new_itr = 8000;
2210 break;
2211 default:
2212 break;
2213 }
2214
2215 if (new_itr != q_vector->eitr) {
fe49f04a
AD		 2216 /* do an exponential smoothing */
2217 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
509ee935
JB		 2218
2219 /* save the algorithm value here, not the smoothed one */
2220 q_vector->eitr = new_itr;
fe49f04a
AD		 2221
2222 ixgbe_write_eitr(q_vector);
f494e8fa 2223 }
f494e8fa
AV		 2224}
2225
79aefa45
AD		 2226/**
2227 * ixgbe_irq_enable - Enable default interrupt generation settings
2228 * @adapter: board private structure
2229 **/
6af3b9eb
ET		 2230static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues,
2231 bool flush)
79aefa45
AD		 2232{
2233 u32 mask;
835462fc
NS		 2234
2235 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
119fc60a
MC		 2236 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
2237 mask |= IXGBE_EIMS_GPI_SDP0;
6ab33d51
DM		 2238 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
2239 mask |= IXGBE_EIMS_GPI_SDP1;
e8e26350 2240 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
2a41ff81 2241 mask |= IXGBE_EIMS_ECC;
e8e26350
PW		 2242 mask |= IXGBE_EIMS_GPI_SDP1;
2243 mask |= IXGBE_EIMS_GPI_SDP2;
1cdd1ec8
GR		 2244 if (adapter->num_vfs)
2245 mask |= IXGBE_EIMS_MAILBOX;
e8e26350 2246 }
c4cf55e5
PWJ		 2247 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
2248 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
2249 mask |= IXGBE_EIMS_FLOW_DIR;
e8e26350 2250
79aefa45 2251 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
6af3b9eb
ET		 2252 if (queues)
2253 ixgbe_irq_enable_queues(adapter, ~0);
2254 if (flush)
2255 IXGBE_WRITE_FLUSH(&adapter->hw);
1cdd1ec8
GR		 2256
2257 if (adapter->num_vfs > 32) {
2258 u32 eitrsel = (1 << (adapter->num_vfs - 32)) - 1;
2259 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel);
2260 }
79aefa45 2261}
021230d4 2262
9a799d71 2263/**
021230d4 2264 * ixgbe_intr - legacy mode Interrupt Handler
9a799d71
AK		 2265 * @irq: interrupt number
2266 * @data: pointer to a network interface device structure
9a799d71
AK		 2267 **/
2268static irqreturn_t ixgbe_intr(int irq, void *data)
2269{
2270 struct net_device *netdev = data;
2271 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2272 struct ixgbe_hw *hw = &adapter->hw;
7a921c93 2273 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
9a799d71
AK		 2274 u32 eicr;
2275
54037505 2276 /*
6af3b9eb 2277 * Workaround for silicon errata on 82598. Mask the interrupts
54037505
DS		 2278 * before the read of EICR.
2279 */
2280 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
2281
021230d4
AV		 2282 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
2283 * therefore no explict interrupt disable is necessary */
2284 eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
f47cf66e 2285 if (!eicr) {
6af3b9eb
ET		 2286 /*
2287 * shared interrupt alert!
f47cf66e 2288 * make sure interrupts are enabled because the read will
6af3b9eb
ET		 2289 * have disabled interrupts due to EIAM
2290 * finish the workaround of silicon errata on 82598. Unmask
2291 * the interrupt that we masked before the EICR read.
2292 */
2293 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2294 ixgbe_irq_enable(adapter, true, true);
9a799d71 2295 return IRQ_NONE; /* Not our interrupt */
f47cf66e 2296 }
9a799d71 2297
cf8280ee
JB		 2298 if (eicr & IXGBE_EICR_LSC)
2299 ixgbe_check_lsc(adapter);
021230d4 2300
e8e26350
PW		 2301 if (hw->mac.type == ixgbe_mac_82599EB)
2302 ixgbe_check_sfp_event(adapter, eicr);
2303
0befdb3e 2304 ixgbe_check_fan_failure(adapter, eicr);
119fc60a
MC		 2305 if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
2306 ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC)))
2307 schedule_work(&adapter->check_overtemp_task);
0befdb3e 2308
7a921c93 2309 if (napi_schedule_prep(&(q_vector->napi))) {
4a0b9ca0
PW		 2310 adapter->tx_ring[0]->total_packets = 0;
2311 adapter->tx_ring[0]->total_bytes = 0;
2312 adapter->rx_ring[0]->total_packets = 0;
2313 adapter->rx_ring[0]->total_bytes = 0;
021230d4 2314 /* would disable interrupts here but EIAM disabled it */
7a921c93 2315 __napi_schedule(&(q_vector->napi));
9a799d71
AK		 2316 }
2317
6af3b9eb
ET		 2318 /*
2319 * re-enable link(maybe) and non-queue interrupts, no flush.
2320 * ixgbe_poll will re-enable the queue interrupts
2321 */
2322
2323 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2324 ixgbe_irq_enable(adapter, false, false);
2325
9a799d71
AK		 2326 return IRQ_HANDLED;
2327}
2328
021230d4
AV		 2329static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter)
2330{
2331 int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2332
2333 for (i = 0; i < q_vectors; i++) {
7a921c93 2334 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
021230d4
AV		 2335 bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES);
2336 bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES);
2337 q_vector->rxr_count = 0;
2338 q_vector->txr_count = 0;
2339 }
2340}
2341
9a799d71
AK		 2342/**
2343 * ixgbe_request_irq - initialize interrupts
2344 * @adapter: board private structure
2345 *
2346 * Attempts to configure interrupts using the best available
2347 * capabilities of the hardware and kernel.
2348 **/
021230d4 2349static int ixgbe_request_irq(struct ixgbe_adapter *adapter)
9a799d71
AK		 2350{
2351 struct net_device *netdev = adapter->netdev;
021230d4 2352 int err;
9a799d71 2353
021230d4
AV		 2354 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2355 err = ixgbe_request_msix_irqs(adapter);
2356 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
a0607fd3 2357 err = request_irq(adapter->pdev->irq, ixgbe_intr, 0,
e8e9f696 2358 netdev->name, netdev);
021230d4 2359 } else {
a0607fd3 2360 err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED,
e8e9f696 2361 netdev->name, netdev);
9a799d71
AK		 2362 }
2363
9a799d71 2364 if (err)
396e799c 2365 e_err(probe, "request_irq failed, Error %d\n", err);
9a799d71 2366
9a799d71
AK		 2367 return err;
2368}
2369
2370static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
2371{
2372 struct net_device *netdev = adapter->netdev;
2373
2374 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
021230d4 2375 int i, q_vectors;
9a799d71 2376
021230d4
AV		 2377 q_vectors = adapter->num_msix_vectors;
2378
2379 i = q_vectors - 1;
9a799d71 2380 free_irq(adapter->msix_entries[i].vector, netdev);
9a799d71 2381
021230d4
AV		 2382 i--;
2383 for (; i >= 0; i--) {
2384 free_irq(adapter->msix_entries[i].vector,
e8e9f696 2385 adapter->q_vector[i]);
021230d4
AV		 2386 }
2387
2388 ixgbe_reset_q_vectors(adapter);
2389 } else {
2390 free_irq(adapter->pdev->irq, netdev);
9a799d71
AK		 2391 }
2392}
2393
22d5a71b
JB		 2394/**
2395 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
2396 * @adapter: board private structure
2397 **/
2398static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
2399{
835462fc
NS		 2400 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
2401 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
2402 } else {
2403 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000);
2404 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0);
22d5a71b 2405 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0);
1cdd1ec8
GR		 2406 if (adapter->num_vfs > 32)
2407 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0);
22d5a71b
JB		 2408 }
2409 IXGBE_WRITE_FLUSH(&adapter->hw);
2410 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2411 int i;
2412 for (i = 0; i < adapter->num_msix_vectors; i++)
2413 synchronize_irq(adapter->msix_entries[i].vector);
2414 } else {
2415 synchronize_irq(adapter->pdev->irq);
2416 }
2417}
2418
9a799d71
AK		 2419/**
2420 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
2421 *
2422 **/
2423static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
2424{
9a799d71
AK		 2425 struct ixgbe_hw *hw = &adapter->hw;
2426
021230d4 2427 IXGBE_WRITE_REG(hw, IXGBE_EITR(0),
e8e9f696 2428 EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr_param));
9a799d71 2429
e8e26350
PW		 2430 ixgbe_set_ivar(adapter, 0, 0, 0);
2431 ixgbe_set_ivar(adapter, 1, 0, 0);
021230d4
AV		 2432
2433 map_vector_to_rxq(adapter, 0, 0);
2434 map_vector_to_txq(adapter, 0, 0);
2435
396e799c 2436 e_info(hw, "Legacy interrupt IVAR setup done\n");
9a799d71
AK		 2437}
2438
43e69bf0
AD		 2439/**
2440 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset
2441 * @adapter: board private structure
2442 * @ring: structure containing ring specific data
2443 *
2444 * Configure the Tx descriptor ring after a reset.
2445 **/
84418e3b
AD		 2446void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter,
2447 struct ixgbe_ring *ring)
43e69bf0
AD		 2448{
2449 struct ixgbe_hw *hw = &adapter->hw;
2450 u64 tdba = ring->dma;
2f1860b8
AD		 2451 int wait_loop = 10;
2452 u32 txdctl;
43e69bf0
AD		 2453 u16 reg_idx = ring->reg_idx;
2454
2f1860b8
AD		 2455 /* disable queue to avoid issues while updating state */
2456 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
2457 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx),
2458 txdctl & ~IXGBE_TXDCTL_ENABLE);
2459 IXGBE_WRITE_FLUSH(hw);
2460
43e69bf0 2461 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx),
e8e9f696 2462 (tdba & DMA_BIT_MASK(32)));
43e69bf0
AD		 2463 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32));
2464 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx),
2465 ring->count * sizeof(union ixgbe_adv_tx_desc));
2466 IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0);
2467 IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0);
84ea2591 2468 ring->tail = hw->hw_addr + IXGBE_TDT(reg_idx);
43e69bf0 2469
2f1860b8
AD		 2470 /* configure fetching thresholds */
2471 if (adapter->rx_itr_setting == 0) {
2472 /* cannot set wthresh when itr==0 */
2473 txdctl &= ~0x007F0000;
2474 } else {
2475 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
2476 txdctl |= (8 << 16);
2477 }
2478 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
2479 /* PThresh workaround for Tx hang with DFP enabled. */
2480 txdctl |= 32;
2481 }
2482
2483 /* reinitialize flowdirector state */
2484 set_bit(__IXGBE_FDIR_INIT_DONE, &ring->reinit_state);
2485
2486 /* enable queue */
2487 txdctl |= IXGBE_TXDCTL_ENABLE;
2488 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl);
2489
2490 /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */
2491 if (hw->mac.type == ixgbe_mac_82598EB &&
2492 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
2493 return;
2494
2495 /* poll to verify queue is enabled */
2496 do {
2497 msleep(1);
2498 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
2499 } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE));
2500 if (!wait_loop)
2501 e_err(drv, "Could not enable Tx Queue %d\n", reg_idx);
43e69bf0
AD		 2502}
2503
120ff942
AD		 2504static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
2505{
2506 struct ixgbe_hw *hw = &adapter->hw;
2507 u32 rttdcs;
2508 u32 mask;
2509
2510 if (hw->mac.type == ixgbe_mac_82598EB)
2511 return;
2512
2513 /* disable the arbiter while setting MTQC */
2514 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
2515 rttdcs |= IXGBE_RTTDCS_ARBDIS;
2516 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
2517
2518 /* set transmit pool layout */
2519 mask = (IXGBE_FLAG_SRIOV_ENABLED | IXGBE_FLAG_DCB_ENABLED);
2520 switch (adapter->flags & mask) {
2521
2522 case (IXGBE_FLAG_SRIOV_ENABLED):
2523 IXGBE_WRITE_REG(hw, IXGBE_MTQC,
2524 (IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF));
2525 break;
2526
2527 case (IXGBE_FLAG_DCB_ENABLED):
2528 /* We enable 8 traffic classes, DCB only */
2529 IXGBE_WRITE_REG(hw, IXGBE_MTQC,
2530 (IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ));
2531 break;
2532
2533 default:
2534 IXGBE_WRITE_REG(hw, IXGBE_MTQC, IXGBE_MTQC_64Q_1PB);
2535 break;
2536 }
2537
2538 /* re-enable the arbiter */
2539 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
2540 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
2541}
2542
9a799d71 2543/**
3a581073 2544 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
9a799d71
AK		 2545 * @adapter: board private structure
2546 *
2547 * Configure the Tx unit of the MAC after a reset.
2548 **/
2549static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
2550{
2f1860b8
AD		 2551 struct ixgbe_hw *hw = &adapter->hw;
2552 u32 dmatxctl;
43e69bf0 2553 u32 i;
9a799d71 2554
2f1860b8
AD		 2555 ixgbe_setup_mtqc(adapter);
2556
2557 if (hw->mac.type != ixgbe_mac_82598EB) {
2558 /* DMATXCTL.EN must be before Tx queues are enabled */
2559 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
2560 dmatxctl |= IXGBE_DMATXCTL_TE;
2561 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
2562 }
2563
9a799d71 2564 /* Setup the HW Tx Head and Tail descriptor pointers */
43e69bf0
AD		 2565 for (i = 0; i < adapter->num_tx_queues; i++)
2566 ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]);
9a799d71
AK		 2567}
2568
e8e26350 2569#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
cc41ac7c 2570
a6616b42 2571static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter,
e8e9f696 2572 struct ixgbe_ring *rx_ring)
cc41ac7c 2573{
cc41ac7c 2574 u32 srrctl;
a6616b42 2575 int index;
0cefafad 2576 struct ixgbe_ring_feature *feature = adapter->ring_feature;
3be1adfb 2577
a6616b42
YZ		 2578 index = rx_ring->reg_idx;
2579 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
2580 unsigned long mask;
0cefafad 2581 mask = (unsigned long) feature[RING_F_RSS].mask;
3be1adfb 2582 index = index & mask;
cc41ac7c 2583 }
cc41ac7c
JB		 2584 srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(index));
2585
2586 srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK;
2587 srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK;
9e10e045
AD		 2588 if (adapter->num_vfs)
2589 srrctl |= IXGBE_SRRCTL_DROP_EN;
cc41ac7c 2590
afafd5b0
AD		 2591 srrctl |= (IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
2592 IXGBE_SRRCTL_BSIZEHDR_MASK;
2593
6e455b89 2594 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
afafd5b0
AD		 2595#if (PAGE_SIZE / 2) > IXGBE_MAX_RXBUFFER
2596 srrctl |= IXGBE_MAX_RXBUFFER >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2597#else
2598 srrctl |= (PAGE_SIZE / 2) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2599#endif
cc41ac7c 2600 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
cc41ac7c 2601 } else {
afafd5b0
AD		 2602 srrctl |= ALIGN(rx_ring->rx_buf_len, 1024) >>
2603 IXGBE_SRRCTL_BSIZEPKT_SHIFT;
cc41ac7c 2604 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
cc41ac7c 2605 }
e8e26350 2606
cc41ac7c
JB		 2607 IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(index), srrctl);
2608}
9a799d71 2609
05abb126 2610static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
0cefafad 2611{
05abb126
AD		 2612 struct ixgbe_hw *hw = &adapter->hw;
2613 static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D,
e8e9f696
JP		 2614 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE,
2615 0x6A3E67EA, 0x14364D17, 0x3BED200D};
05abb126
AD		 2616 u32 mrqc = 0, reta = 0;
2617 u32 rxcsum;
2618 int i, j;
0cefafad
JB		 2619 int mask;
2620
05abb126
AD		 2621 /* Fill out hash function seeds */
2622 for (i = 0; i < 10; i++)
2623 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]);
2624
2625 /* Fill out redirection table */
2626 for (i = 0, j = 0; i < 128; i++, j++) {
2627 if (j == adapter->ring_feature[RING_F_RSS].indices)
2628 j = 0;
2629 /* reta = 4-byte sliding window of
2630 * 0x00..(indices-1)(indices-1)00..etc. */
2631 reta = (reta << 8) | (j * 0x11);
2632 if ((i & 3) == 3)
2633 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
2634 }
0cefafad 2635
05abb126
AD		 2636 /* Disable indicating checksum in descriptor, enables RSS hash */
2637 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
2638 rxcsum |= IXGBE_RXCSUM_PCSD;
2639 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
2640
2641 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
2642 mask = adapter->flags & IXGBE_FLAG_RSS_ENABLED;
2643 else
2644 mask = adapter->flags & (IXGBE_FLAG_RSS_ENABLED
0cefafad 2645#ifdef CONFIG_IXGBE_DCB
05abb126 2646 | IXGBE_FLAG_DCB_ENABLED
0cefafad 2647#endif
05abb126
AD		 2648 | IXGBE_FLAG_SRIOV_ENABLED
2649 );
0cefafad
JB		 2650
2651 switch (mask) {
2652 case (IXGBE_FLAG_RSS_ENABLED):
2653 mrqc = IXGBE_MRQC_RSSEN;
2654 break;
1cdd1ec8
GR		 2655 case (IXGBE_FLAG_SRIOV_ENABLED):
2656 mrqc = IXGBE_MRQC_VMDQEN;
2657 break;
0cefafad
JB		 2658#ifdef CONFIG_IXGBE_DCB
2659 case (IXGBE_FLAG_DCB_ENABLED):
2660 mrqc = IXGBE_MRQC_RT8TCEN;
2661 break;
2662#endif /* CONFIG_IXGBE_DCB */
2663 default:
2664 break;
2665 }
2666
05abb126
AD		 2667 /* Perform hash on these packet types */
2668 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4
2669 | IXGBE_MRQC_RSS_FIELD_IPV4_TCP
2670 | IXGBE_MRQC_RSS_FIELD_IPV6
2671 | IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
2672
2673 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
0cefafad
JB		 2674}
2675
bb5a9ad2
NS		 2676/**
2677 * ixgbe_configure_rscctl - enable RSC for the indicated ring
2678 * @adapter: address of board private structure
2679 * @index: index of ring to set
bb5a9ad2 2680 **/
7367096a
AD		 2681static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter,
2682 struct ixgbe_ring *ring)
bb5a9ad2 2683{
bb5a9ad2 2684 struct ixgbe_hw *hw = &adapter->hw;
bb5a9ad2 2685 u32 rscctrl;
edd2ea55 2686 int rx_buf_len;
7367096a
AD		 2687 u16 reg_idx = ring->reg_idx;
2688
2689 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
2690 return;
bb5a9ad2 2691
7367096a
AD		 2692 rx_buf_len = ring->rx_buf_len;
2693 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx));
bb5a9ad2
NS		 2694 rscctrl |= IXGBE_RSCCTL_RSCEN;
2695 /*
2696 * we must limit the number of descriptors so that the
2697 * total size of max desc * buf_len is not greater
2698 * than 65535
2699 */
7367096a 2700 if (ring->flags & IXGBE_RING_RX_PS_ENABLED) {
bb5a9ad2
NS		 2701#if (MAX_SKB_FRAGS > 16)
2702 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
2703#elif (MAX_SKB_FRAGS > 8)
2704 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
2705#elif (MAX_SKB_FRAGS > 4)
2706 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
2707#else
2708 rscctrl |= IXGBE_RSCCTL_MAXDESC_1;
2709#endif
2710 } else {
2711 if (rx_buf_len < IXGBE_RXBUFFER_4096)
2712 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
2713 else if (rx_buf_len < IXGBE_RXBUFFER_8192)
2714 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
2715 else
2716 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
2717 }
7367096a 2718 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl);
bb5a9ad2
NS		 2719}
2720
9e10e045
AD		 2721/**
2722 * ixgbe_set_uta - Set unicast filter table address
2723 * @adapter: board private structure
2724 *
2725 * The unicast table address is a register array of 32-bit registers.
2726 * The table is meant to be used in a way similar to how the MTA is used
2727 * however due to certain limitations in the hardware it is necessary to
2728 * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous
2729 * enable bit to allow vlan tag stripping when promiscuous mode is enabled
2730 **/
2731static void ixgbe_set_uta(struct ixgbe_adapter *adapter)
2732{
2733 struct ixgbe_hw *hw = &adapter->hw;
2734 int i;
2735
2736 /* The UTA table only exists on 82599 hardware and newer */
2737 if (hw->mac.type < ixgbe_mac_82599EB)
2738 return;
2739
2740 /* we only need to do this if VMDq is enabled */
2741 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
2742 return;
2743
2744 for (i = 0; i < 128; i++)
2745 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), ~0);
2746}
2747
2748#define IXGBE_MAX_RX_DESC_POLL 10
2749static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter,
2750 struct ixgbe_ring *ring)
2751{
2752 struct ixgbe_hw *hw = &adapter->hw;
2753 int reg_idx = ring->reg_idx;
2754 int wait_loop = IXGBE_MAX_RX_DESC_POLL;
2755 u32 rxdctl;
2756
2757 /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */
2758 if (hw->mac.type == ixgbe_mac_82598EB &&
2759 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
2760 return;
2761
2762 do {
2763 msleep(1);
2764 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
2765 } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE));
2766
2767 if (!wait_loop) {
2768 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within "
2769 "the polling period\n", reg_idx);
2770 }
2771}
2772
84418e3b
AD		 2773void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
2774 struct ixgbe_ring *ring)
acd37177
AD		 2775{
2776 struct ixgbe_hw *hw = &adapter->hw;
2777 u64 rdba = ring->dma;
9e10e045 2778 u32 rxdctl;
acd37177
AD		 2779 u16 reg_idx = ring->reg_idx;
2780
9e10e045
AD		 2781 /* disable queue to avoid issues while updating state */
2782 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
2783 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx),
2784 rxdctl & ~IXGBE_RXDCTL_ENABLE);
2785 IXGBE_WRITE_FLUSH(hw);
2786
acd37177
AD		 2787 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32)));
2788 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32));
2789 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx),
2790 ring->count * sizeof(union ixgbe_adv_rx_desc));
2791 IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0);
2792 IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0);
84ea2591 2793 ring->tail = hw->hw_addr + IXGBE_RDT(reg_idx);
9e10e045
AD		 2794
2795 ixgbe_configure_srrctl(adapter, ring);
2796 ixgbe_configure_rscctl(adapter, ring);
2797
2798 if (hw->mac.type == ixgbe_mac_82598EB) {
2799 /*
2800 * enable cache line friendly hardware writes:
2801 * PTHRESH=32 descriptors (half the internal cache),
2802 * this also removes ugly rx_no_buffer_count increment
2803 * HTHRESH=4 descriptors (to minimize latency on fetch)
2804 * WTHRESH=8 burst writeback up to two cache lines
2805 */
2806 rxdctl &= ~0x3FFFFF;
2807 rxdctl |= 0x080420;
2808 }
2809
2810 /* enable receive descriptor ring */
2811 rxdctl |= IXGBE_RXDCTL_ENABLE;
2812 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
2813
2814 ixgbe_rx_desc_queue_enable(adapter, ring);
fc77dc3c 2815 ixgbe_alloc_rx_buffers(ring, IXGBE_DESC_UNUSED(ring));
acd37177
AD		 2816}
2817
48654521
AD		 2818static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter)
2819{
2820 struct ixgbe_hw *hw = &adapter->hw;
2821 int p;
2822
2823 /* PSRTYPE must be initialized in non 82598 adapters */
2824 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
e8e9f696
JP		 2825 IXGBE_PSRTYPE_UDPHDR |
2826 IXGBE_PSRTYPE_IPV4HDR |
48654521 2827 IXGBE_PSRTYPE_L2HDR |
e8e9f696 2828 IXGBE_PSRTYPE_IPV6HDR;
48654521
AD		 2829
2830 if (hw->mac.type == ixgbe_mac_82598EB)
2831 return;
2832
2833 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED)
2834 psrtype |= (adapter->num_rx_queues_per_pool << 29);
2835
2836 for (p = 0; p < adapter->num_rx_pools; p++)
2837 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(adapter->num_vfs + p),
2838 psrtype);
2839}
2840
f5b4a52e
AD		 2841static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter)
2842{
2843 struct ixgbe_hw *hw = &adapter->hw;
2844 u32 gcr_ext;
2845 u32 vt_reg_bits;
2846 u32 reg_offset, vf_shift;
2847 u32 vmdctl;
2848
2849 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
2850 return;
2851
2852 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
2853 vt_reg_bits = IXGBE_VMD_CTL_VMDQ_EN | IXGBE_VT_CTL_REPLEN;
2854 vt_reg_bits |= (adapter->num_vfs << IXGBE_VT_CTL_POOL_SHIFT);
2855 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl | vt_reg_bits);
2856
2857 vf_shift = adapter->num_vfs % 32;
2858 reg_offset = (adapter->num_vfs > 32) ? 1 : 0;
2859
2860 /* Enable only the PF's pool for Tx/Rx */
2861 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), (1 << vf_shift));
2862 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), 0);
2863 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), (1 << vf_shift));
2864 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), 0);
2865 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
2866
2867 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */
2868 hw->mac.ops.set_vmdq(hw, 0, adapter->num_vfs);
2869
2870 /*
2871 * Set up VF register offsets for selected VT Mode,
2872 * i.e. 32 or 64 VFs for SR-IOV
2873 */
2874 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
2875 gcr_ext |= IXGBE_GCR_EXT_MSIX_EN;
2876 gcr_ext |= IXGBE_GCR_EXT_VT_MODE_64;
2877 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
2878
2879 /* enable Tx loopback for VF/PF communication */
2880 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
2881}
2882
477de6ed 2883static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter)
9a799d71 2884{
9a799d71
AK		 2885 struct ixgbe_hw *hw = &adapter->hw;
2886 struct net_device *netdev = adapter->netdev;
2887 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
7c6e0a43 2888 int rx_buf_len;
477de6ed
AD		 2889 struct ixgbe_ring *rx_ring;
2890 int i;
2891 u32 mhadd, hlreg0;
48654521 2892
9a799d71 2893 /* Decide whether to use packet split mode or not */
1cdd1ec8
GR		 2894 /* Do not use packet split if we're in SR-IOV Mode */
2895 if (!adapter->num_vfs)
2896 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
9a799d71
AK		 2897
2898 /* Set the RX buffer length according to the mode */
2899 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
7c6e0a43 2900 rx_buf_len = IXGBE_RX_HDR_SIZE;
9a799d71 2901 } else {
0c19d6af 2902 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
f8212f97 2903 (netdev->mtu <= ETH_DATA_LEN))
7c6e0a43 2904 rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
9a799d71 2905 else
477de6ed 2906 rx_buf_len = ALIGN(max_frame + VLAN_HLEN, 1024);
9a799d71
AK		 2907 }
2908
63f39bd1 2909#ifdef IXGBE_FCOE
477de6ed
AD		 2910 /* adjust max frame to be able to do baby jumbo for FCoE */
2911 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
2912 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE))
2913 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE;
9a799d71 2914
477de6ed
AD		 2915#endif /* IXGBE_FCOE */
2916 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD);
2917 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) {
2918 mhadd &= ~IXGBE_MHADD_MFS_MASK;
2919 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT;
2920
2921 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
2922 }
2923
2924 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
2925 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */
2926 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
2927 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
9a799d71 2928
0cefafad
JB		 2929 /*
2930 * Setup the HW Rx Head and Tail Descriptor Pointers and
2931 * the Base and Length of the Rx Descriptor Ring
2932 */
9a799d71 2933 for (i = 0; i < adapter->num_rx_queues; i++) {
4a0b9ca0 2934 rx_ring = adapter->rx_ring[i];
a6616b42 2935 rx_ring->rx_buf_len = rx_buf_len;
cc41ac7c 2936
6e455b89
YZ		 2937 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)
2938 rx_ring->flags |= IXGBE_RING_RX_PS_ENABLED;
1b3ff02e
PWJ		 2939 else
2940 rx_ring->flags &= ~IXGBE_RING_RX_PS_ENABLED;
cc41ac7c 2941
63f39bd1 2942#ifdef IXGBE_FCOE
e8e9f696 2943 if (netdev->features & NETIF_F_FCOE_MTU) {
63f39bd1
YZ		 2944 struct ixgbe_ring_feature *f;
2945 f = &adapter->ring_feature[RING_F_FCOE];
6e455b89
YZ		 2946 if ((i >= f->mask) && (i < f->mask + f->indices)) {
2947 rx_ring->flags &= ~IXGBE_RING_RX_PS_ENABLED;
2948 if (rx_buf_len < IXGBE_FCOE_JUMBO_FRAME_SIZE)
2949 rx_ring->rx_buf_len =
e8e9f696 2950 IXGBE_FCOE_JUMBO_FRAME_SIZE;
6e455b89 2951 }
63f39bd1 2952 }
63f39bd1 2953#endif /* IXGBE_FCOE */
477de6ed
AD		 2954 }
2955
2956}
2957
7367096a
AD		 2958static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter)
2959{
2960 struct ixgbe_hw *hw = &adapter->hw;
2961 u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
2962
2963 switch (hw->mac.type) {
2964 case ixgbe_mac_82598EB:
2965 /*
2966 * For VMDq support of different descriptor types or
2967 * buffer sizes through the use of multiple SRRCTL
2968 * registers, RDRXCTL.MVMEN must be set to 1
2969 *
2970 * also, the manual doesn't mention it clearly but DCA hints
2971 * will only use queue 0's tags unless this bit is set. Side
2972 * effects of setting this bit are only that SRRCTL must be
2973 * fully programmed [0..15]
2974 */
2975 rdrxctl |= IXGBE_RDRXCTL_MVMEN;
2976 break;
2977 case ixgbe_mac_82599EB:
2978 /* Disable RSC for ACK packets */
2979 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU,
2980 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU)));
2981 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
2982 /* hardware requires some bits to be set by default */
2983 rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX);
2984 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
2985 break;
2986 default:
2987 /* We should do nothing since we don't know this hardware */
2988 return;
2989 }
2990
2991 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
2992}
2993
477de6ed
AD		 2994/**
2995 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
2996 * @adapter: board private structure
2997 *
2998 * Configure the Rx unit of the MAC after a reset.
2999 **/
3000static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
3001{
3002 struct ixgbe_hw *hw = &adapter->hw;
477de6ed
AD		 3003 int i;
3004 u32 rxctrl;
477de6ed
AD		 3005
3006 /* disable receives while setting up the descriptors */
3007 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3008 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
3009
3010 ixgbe_setup_psrtype(adapter);
7367096a 3011 ixgbe_setup_rdrxctl(adapter);
477de6ed 3012
9e10e045 3013 /* Program registers for the distribution of queues */
f5b4a52e 3014 ixgbe_setup_mrqc(adapter);
f5b4a52e 3015
9e10e045
AD		 3016 ixgbe_set_uta(adapter);
3017
477de6ed
AD		 3018 /* set_rx_buffer_len must be called before ring initialization */
3019 ixgbe_set_rx_buffer_len(adapter);
3020
3021 /*
3022 * Setup the HW Rx Head and Tail Descriptor Pointers and
3023 * the Base and Length of the Rx Descriptor Ring
3024 */
9e10e045
AD		 3025 for (i = 0; i < adapter->num_rx_queues; i++)
3026 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]);
177db6ff 3027
9e10e045
AD		 3028 /* disable drop enable for 82598 parts */
3029 if (hw->mac.type == ixgbe_mac_82598EB)
3030 rxctrl |= IXGBE_RXCTRL_DMBYPS;
3031
3032 /* enable all receives */
3033 rxctrl |= IXGBE_RXCTRL_RXEN;
3034 hw->mac.ops.enable_rx_dma(hw, rxctrl);
9a799d71
AK		 3035}
3036
068c89b0
DS		 3037static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
3038{
3039 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3040 struct ixgbe_hw *hw = &adapter->hw;
1ada1b1b 3041 int pool_ndx = adapter->num_vfs;
068c89b0
DS		 3042
3043 /* add VID to filter table */
1ada1b1b 3044 hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, true);
f62bbb5e 3045 set_bit(vid, adapter->active_vlans);
068c89b0
DS		 3046}
3047
3048static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
3049{
3050 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3051 struct ixgbe_hw *hw = &adapter->hw;
1ada1b1b 3052 int pool_ndx = adapter->num_vfs;
068c89b0 3053
068c89b0 3054 /* remove VID from filter table */
1ada1b1b 3055 hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, false);
f62bbb5e 3056 clear_bit(vid, adapter->active_vlans);
068c89b0
DS		 3057}
3058
5f6c0181
JB		 3059/**
3060 * ixgbe_vlan_filter_disable - helper to disable hw vlan filtering
3061 * @adapter: driver data
3062 */
3063static void ixgbe_vlan_filter_disable(struct ixgbe_adapter *adapter)
3064{
3065 struct ixgbe_hw *hw = &adapter->hw;
f62bbb5e
JG		 3066 u32 vlnctrl;
3067
3068 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3069 vlnctrl &= ~(IXGBE_VLNCTRL_VFE | IXGBE_VLNCTRL_CFIEN);
3070 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3071}
3072
3073/**
3074 * ixgbe_vlan_filter_enable - helper to enable hw vlan filtering
3075 * @adapter: driver data
3076 */
3077static void ixgbe_vlan_filter_enable(struct ixgbe_adapter *adapter)
3078{
3079 struct ixgbe_hw *hw = &adapter->hw;
3080 u32 vlnctrl;
3081
3082 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3083 vlnctrl |= IXGBE_VLNCTRL_VFE;
3084 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
3085 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3086}
3087
3088/**
3089 * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping
3090 * @adapter: driver data
3091 */
3092static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter)
3093{
3094 struct ixgbe_hw *hw = &adapter->hw;
3095 u32 vlnctrl;
5f6c0181
JB		 3096 int i, j;
3097
3098 switch (hw->mac.type) {
3099 case ixgbe_mac_82598EB:
f62bbb5e
JG		 3100 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3101 vlnctrl &= ~IXGBE_VLNCTRL_VME;
5f6c0181
JB		 3102 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3103 break;
3104 case ixgbe_mac_82599EB:
5f6c0181
JB		 3105 for (i = 0; i < adapter->num_rx_queues; i++) {
3106 j = adapter->rx_ring[i]->reg_idx;
3107 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
3108 vlnctrl &= ~IXGBE_RXDCTL_VME;
3109 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
3110 }
3111 break;
3112 default:
3113 break;
3114 }
3115}
3116
3117/**
f62bbb5e 3118 * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping
5f6c0181
JB		 3119 * @adapter: driver data
3120 */
f62bbb5e 3121static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter)
5f6c0181
JB		 3122{
3123 struct ixgbe_hw *hw = &adapter->hw;
f62bbb5e 3124 u32 vlnctrl;
5f6c0181
JB		 3125 int i, j;
3126
3127 switch (hw->mac.type) {
3128 case ixgbe_mac_82598EB:
f62bbb5e
JG		 3129 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3130 vlnctrl |= IXGBE_VLNCTRL_VME;
5f6c0181
JB		 3131 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3132 break;
3133 case ixgbe_mac_82599EB:
5f6c0181
JB		 3134 for (i = 0; i < adapter->num_rx_queues; i++) {
3135 j = adapter->rx_ring[i]->reg_idx;
3136 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
3137 vlnctrl |= IXGBE_RXDCTL_VME;
3138 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
3139 }
3140 break;
3141 default:
3142 break;
3143 }
3144}
3145
9a799d71
AK		 3146static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
3147{
f62bbb5e 3148 u16 vid;
9a799d71 3149
f62bbb5e
JG		 3150 ixgbe_vlan_rx_add_vid(adapter->netdev, 0);
3151
3152 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
3153 ixgbe_vlan_rx_add_vid(adapter->netdev, vid);
9a799d71
AK		 3154}
3155
2850062a
AD		 3156/**
3157 * ixgbe_write_uc_addr_list - write unicast addresses to RAR table
3158 * @netdev: network interface device structure
3159 *
3160 * Writes unicast address list to the RAR table.
3161 * Returns: -ENOMEM on failure/insufficient address space
3162 * 0 on no addresses written
3163 * X on writing X addresses to the RAR table
3164 **/
3165static int ixgbe_write_uc_addr_list(struct net_device *netdev)
3166{
3167 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3168 struct ixgbe_hw *hw = &adapter->hw;
3169 unsigned int vfn = adapter->num_vfs;
3170 unsigned int rar_entries = hw->mac.num_rar_entries - (vfn + 1);
3171 int count = 0;
3172
3173 /* return ENOMEM indicating insufficient memory for addresses */
3174 if (netdev_uc_count(netdev) > rar_entries)
3175 return -ENOMEM;
3176
3177 if (!netdev_uc_empty(netdev) && rar_entries) {
3178 struct netdev_hw_addr *ha;
3179 /* return error if we do not support writing to RAR table */
3180 if (!hw->mac.ops.set_rar)
3181 return -ENOMEM;
3182
3183 netdev_for_each_uc_addr(ha, netdev) {
3184 if (!rar_entries)
3185 break;
3186 hw->mac.ops.set_rar(hw, rar_entries--, ha->addr,
3187 vfn, IXGBE_RAH_AV);
3188 count++;
3189 }
3190 }
3191 /* write the addresses in reverse order to avoid write combining */
3192 for (; rar_entries > 0 ; rar_entries--)
3193 hw->mac.ops.clear_rar(hw, rar_entries);
3194
3195 return count;
3196}
3197
9a799d71 3198/**
2c5645cf 3199 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
9a799d71
AK		 3200 * @netdev: network interface device structure
3201 *
2c5645cf
CL		 3202 * The set_rx_method entry point is called whenever the unicast/multicast
3203 * address list or the network interface flags are updated. This routine is
3204 * responsible for configuring the hardware for proper unicast, multicast and
3205 * promiscuous mode.
9a799d71 3206 **/
7f870475 3207void ixgbe_set_rx_mode(struct net_device *netdev)
9a799d71
AK		 3208{
3209 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3210 struct ixgbe_hw *hw = &adapter->hw;
2850062a
AD		 3211 u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE;
3212 int count;
9a799d71
AK		 3213
3214 /* Check for Promiscuous and All Multicast modes */
3215
3216 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
3217
f5dc442b
AD		 3218 /* set all bits that we expect to always be set */
3219 fctrl |= IXGBE_FCTRL_BAM;
3220 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
3221 fctrl |= IXGBE_FCTRL_PMCF;
3222
2850062a
AD		 3223 /* clear the bits we are changing the status of */
3224 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
3225
9a799d71 3226 if (netdev->flags & IFF_PROMISC) {
e433ea1f 3227 hw->addr_ctrl.user_set_promisc = true;
9a799d71 3228 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
2850062a 3229 vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_MPE);
5f6c0181
JB		 3230 /* don't hardware filter vlans in promisc mode */
3231 ixgbe_vlan_filter_disable(adapter);
9a799d71 3232 } else {
746b9f02
PM		 3233 if (netdev->flags & IFF_ALLMULTI) {
3234 fctrl |= IXGBE_FCTRL_MPE;
2850062a
AD		 3235 vmolr |= IXGBE_VMOLR_MPE;
3236 } else {
3237 /*
3238 * Write addresses to the MTA, if the attempt fails
3239 * then we should just turn on promiscous mode so
3240 * that we can at least receive multicast traffic
3241 */
3242 hw->mac.ops.update_mc_addr_list(hw, netdev);
3243 vmolr |= IXGBE_VMOLR_ROMPE;
746b9f02 3244 }
5f6c0181 3245 ixgbe_vlan_filter_enable(adapter);
e433ea1f 3246 hw->addr_ctrl.user_set_promisc = false;
2850062a
AD		 3247 /*
3248 * Write addresses to available RAR registers, if there is not
3249 * sufficient space to store all the addresses then enable
3250 * unicast promiscous mode
3251 */
3252 count = ixgbe_write_uc_addr_list(netdev);
3253 if (count < 0) {
3254 fctrl |= IXGBE_FCTRL_UPE;
3255 vmolr |= IXGBE_VMOLR_ROPE;
3256 }
9a799d71
AK		 3257 }
3258
2850062a 3259 if (adapter->num_vfs) {
1cdd1ec8 3260 ixgbe_restore_vf_multicasts(adapter);
2850062a
AD		 3261 vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(adapter->num_vfs)) &
3262 ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE |
3263 IXGBE_VMOLR_ROPE);
3264 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(adapter->num_vfs), vmolr);
3265 }
3266
3267 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
f62bbb5e
JG		 3268
3269 if (netdev->features & NETIF_F_HW_VLAN_RX)
3270 ixgbe_vlan_strip_enable(adapter);
3271 else
3272 ixgbe_vlan_strip_disable(adapter);
9a799d71
AK		 3273}
3274
021230d4
AV		 3275static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
3276{
3277 int q_idx;
3278 struct ixgbe_q_vector *q_vector;
3279 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
3280
3281 /* legacy and MSI only use one vector */
3282 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
3283 q_vectors = 1;
3284
3285 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
f0848276 3286 struct napi_struct *napi;
7a921c93 3287 q_vector = adapter->q_vector[q_idx];
f0848276 3288 napi = &q_vector->napi;
91281fd3
AD		 3289 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
3290 if (!q_vector->rxr_count || !q_vector->txr_count) {
3291 if (q_vector->txr_count == 1)
3292 napi->poll = &ixgbe_clean_txonly;
3293 else if (q_vector->rxr_count == 1)
3294 napi->poll = &ixgbe_clean_rxonly;
3295 }
3296 }
f0848276
JB		 3297
3298 napi_enable(napi);
021230d4
AV		 3299 }
3300}
3301
3302static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
3303{
3304 int q_idx;
3305 struct ixgbe_q_vector *q_vector;
3306 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
3307
3308 /* legacy and MSI only use one vector */
3309 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
3310 q_vectors = 1;
3311
3312 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
7a921c93 3313 q_vector = adapter->q_vector[q_idx];
021230d4
AV		 3314 napi_disable(&q_vector->napi);
3315 }
3316}
3317
7a6b6f51 3318#ifdef CONFIG_IXGBE_DCB
2f90b865
AD		 3319/*
3320 * ixgbe_configure_dcb - Configure DCB hardware
3321 * @adapter: ixgbe adapter struct
3322 *
3323 * This is called by the driver on open to configure the DCB hardware.
3324 * This is also called by the gennetlink interface when reconfiguring
3325 * the DCB state.
3326 */
3327static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
3328{
3329 struct ixgbe_hw *hw = &adapter->hw;
9806307a 3330 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
5f6c0181 3331 u32 txdctl;
2f90b865
AD		 3332 int i, j;
3333
67ebd791
AD		 3334 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) {
3335 if (hw->mac.type == ixgbe_mac_82598EB)
3336 netif_set_gso_max_size(adapter->netdev, 65536);
3337 return;
3338 }
3339
3340 if (hw->mac.type == ixgbe_mac_82598EB)
3341 netif_set_gso_max_size(adapter->netdev, 32768);
3342
9806307a
JF		 3343#ifdef CONFIG_FCOE
3344 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
3345 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
3346#endif
3347
80ab193d 3348 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
9806307a 3349 DCB_TX_CONFIG);
80ab193d 3350 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
9806307a 3351 DCB_RX_CONFIG);
2f90b865
AD		 3352
3353 /* reconfigure the hardware */
3354 ixgbe_dcb_hw_config(&adapter->hw, &adapter->dcb_cfg);
3355
3356 for (i = 0; i < adapter->num_tx_queues; i++) {
4a0b9ca0 3357 j = adapter->tx_ring[i]->reg_idx;
2f90b865
AD		 3358 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
3359 /* PThresh workaround for Tx hang with DFP enabled. */
3360 txdctl |= 32;
3361 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
3362 }
3363 /* Enable VLAN tag insert/strip */
f62bbb5e 3364 adapter->netdev->features |= NETIF_F_HW_VLAN_RX;
5f6c0181 3365
2f90b865
AD		 3366 hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true);
3367}
3368
3369#endif
9a799d71
AK		 3370static void ixgbe_configure(struct ixgbe_adapter *adapter)
3371{
3372 struct net_device *netdev = adapter->netdev;
c4cf55e5 3373 struct ixgbe_hw *hw = &adapter->hw;
9a799d71
AK		 3374 int i;
3375
7a6b6f51 3376#ifdef CONFIG_IXGBE_DCB
67ebd791 3377 ixgbe_configure_dcb(adapter);
2f90b865 3378#endif
9a799d71 3379
f62bbb5e
JG		 3380 ixgbe_set_rx_mode(netdev);
3381 ixgbe_restore_vlan(adapter);
3382
eacd73f7
YZ		 3383#ifdef IXGBE_FCOE
3384 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
3385 ixgbe_configure_fcoe(adapter);
3386
3387#endif /* IXGBE_FCOE */
c4cf55e5
PWJ		 3388 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
3389 for (i = 0; i < adapter->num_tx_queues; i++)
4a0b9ca0 3390 adapter->tx_ring[i]->atr_sample_rate =
e8e9f696 3391 adapter->atr_sample_rate;
c4cf55e5
PWJ		 3392 ixgbe_init_fdir_signature_82599(hw, adapter->fdir_pballoc);
3393 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
3394 ixgbe_init_fdir_perfect_82599(hw, adapter->fdir_pballoc);
3395 }
933d41f1 3396 ixgbe_configure_virtualization(adapter);
c4cf55e5 3397
9a799d71
AK		 3398 ixgbe_configure_tx(adapter);
3399 ixgbe_configure_rx(adapter);
9a799d71
AK		 3400}
3401
e8e26350
PW		 3402static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
3403{
3404 switch (hw->phy.type) {
3405 case ixgbe_phy_sfp_avago:
3406 case ixgbe_phy_sfp_ftl:
3407 case ixgbe_phy_sfp_intel:
3408 case ixgbe_phy_sfp_unknown:
ea0a04df
DS		 3409 case ixgbe_phy_sfp_passive_tyco:
3410 case ixgbe_phy_sfp_passive_unknown:
3411 case ixgbe_phy_sfp_active_unknown:
3412 case ixgbe_phy_sfp_ftl_active:
e8e26350
PW		 3413 return true;
3414 default:
3415 return false;
3416 }
3417}
3418
0ecc061d 3419/**
e8e26350
PW		 3420 * ixgbe_sfp_link_config - set up SFP+ link
3421 * @adapter: pointer to private adapter struct
3422 **/
3423static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter)
3424{
3425 struct ixgbe_hw *hw = &adapter->hw;
3426
3427 if (hw->phy.multispeed_fiber) {
3428 /*
3429 * In multispeed fiber setups, the device may not have
3430 * had a physical connection when the driver loaded.
3431 * If that's the case, the initial link configuration
3432 * couldn't get the MAC into 10G or 1G mode, so we'll
3433 * never have a link status change interrupt fire.
3434 * We need to try and force an autonegotiation
3435 * session, then bring up link.
3436 */
3437 hw->mac.ops.setup_sfp(hw);
3438 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK))
3439 schedule_work(&adapter->multispeed_fiber_task);
3440 } else {
3441 /*
3442 * Direct Attach Cu and non-multispeed fiber modules
3443 * still need to be configured properly prior to
3444 * attempting link.
3445 */
3446 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_MOD_TASK))
3447 schedule_work(&adapter->sfp_config_module_task);
3448 }
3449}
3450
3451/**
3452 * ixgbe_non_sfp_link_config - set up non-SFP+ link
0ecc061d
PWJ		 3453 * @hw: pointer to private hardware struct
3454 *
3455 * Returns 0 on success, negative on failure
3456 **/
e8e26350 3457static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw)
0ecc061d
PWJ		 3458{
3459 u32 autoneg;
8620a103 3460 bool negotiation, link_up = false;
0ecc061d
PWJ		 3461 u32 ret = IXGBE_ERR_LINK_SETUP;
3462
3463 if (hw->mac.ops.check_link)
3464 ret = hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
3465
3466 if (ret)
3467 goto link_cfg_out;
3468
3469 if (hw->mac.ops.get_link_capabilities)
e8e9f696
JP		 3470 ret = hw->mac.ops.get_link_capabilities(hw, &autoneg,
3471 &negotiation);
0ecc061d
PWJ		 3472 if (ret)
3473 goto link_cfg_out;
3474
8620a103
MC		 3475 if (hw->mac.ops.setup_link)
3476 ret = hw->mac.ops.setup_link(hw, autoneg, negotiation, link_up);
0ecc061d
PWJ		 3477link_cfg_out:
3478 return ret;
3479}
3480
a34bcfff 3481static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter)
9a799d71 3482{
9a799d71 3483 struct ixgbe_hw *hw = &adapter->hw;
a34bcfff 3484 u32 gpie = 0;
9a799d71 3485
9b471446 3486 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
a34bcfff
AD		 3487 gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT |
3488 IXGBE_GPIE_OCD;
3489 gpie |= IXGBE_GPIE_EIAME;
9b471446
JB		 3490 /*
3491 * use EIAM to auto-mask when MSI-X interrupt is asserted
3492 * this saves a register write for every interrupt
3493 */
3494 switch (hw->mac.type) {
3495 case ixgbe_mac_82598EB:
3496 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
3497 break;
3498 default:
3499 case ixgbe_mac_82599EB:
3500 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
3501 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
3502 break;
3503 }
3504 } else {
021230d4
AV		 3505 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
3506 * specifically only auto mask tx and rx interrupts */
3507 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
3508 }
9a799d71 3509
a34bcfff
AD		 3510 /* XXX: to interrupt immediately for EICS writes, enable this */
3511 /* gpie |= IXGBE_GPIE_EIMEN; */
3512
3513 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
3514 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
3515 gpie |= IXGBE_GPIE_VTMODE_64;
119fc60a
MC		 3516 }
3517
a34bcfff
AD		 3518 /* Enable fan failure interrupt */
3519 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
0befdb3e 3520 gpie |= IXGBE_SDP1_GPIEN;
0befdb3e 3521
a34bcfff 3522 if (hw->mac.type == ixgbe_mac_82599EB)
e8e26350
PW		 3523 gpie |= IXGBE_SDP1_GPIEN;
3524 gpie |= IXGBE_SDP2_GPIEN;
a34bcfff
AD		 3525
3526 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
3527}
3528
3529static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
3530{
3531 struct ixgbe_hw *hw = &adapter->hw;
a34bcfff 3532 int err;
a34bcfff
AD		 3533 u32 ctrl_ext;
3534
3535 ixgbe_get_hw_control(adapter);
3536 ixgbe_setup_gpie(adapter);
e8e26350 3537
9a799d71
AK		 3538 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
3539 ixgbe_configure_msix(adapter);
3540 else
3541 ixgbe_configure_msi_and_legacy(adapter);
3542
61fac744
PW		 3543 /* enable the optics */
3544 if (hw->phy.multispeed_fiber)
3545 hw->mac.ops.enable_tx_laser(hw);
3546
9a799d71 3547 clear_bit(__IXGBE_DOWN, &adapter->state);
021230d4
AV		 3548 ixgbe_napi_enable_all(adapter);
3549
3550 /* clear any pending interrupts, may auto mask */
3551 IXGBE_READ_REG(hw, IXGBE_EICR);
6af3b9eb 3552 ixgbe_irq_enable(adapter, true, true);
9a799d71 3553
bf069c97
DS		 3554 /*
3555 * If this adapter has a fan, check to see if we had a failure
3556 * before we enabled the interrupt.
3557 */
3558 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
3559 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
3560 if (esdp & IXGBE_ESDP_SDP1)
396e799c 3561 e_crit(drv, "Fan has stopped, replace the adapter\n");
bf069c97
DS		 3562 }
3563
e8e26350
PW		 3564 /*
3565 * For hot-pluggable SFP+ devices, a new SFP+ module may have
19343de2
DS		 3566 * arrived before interrupts were enabled but after probe. Such
3567 * devices wouldn't have their type identified yet. We need to
3568 * kick off the SFP+ module setup first, then try to bring up link.
e8e26350
PW		 3569 * If we're not hot-pluggable SFP+, we just need to configure link
3570 * and bring it up.
3571 */
19343de2
DS		 3572 if (hw->phy.type == ixgbe_phy_unknown) {
3573 err = hw->phy.ops.identify(hw);
3574 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
5da43c1a
DS		 3575 /*
3576 * Take the device down and schedule the sfp tasklet
3577 * which will unregister_netdev and log it.
3578 */
19343de2 3579 ixgbe_down(adapter);
5da43c1a 3580 schedule_work(&adapter->sfp_config_module_task);
19343de2
DS		 3581 return err;
3582 }
e8e26350
PW		 3583 }
3584
3585 if (ixgbe_is_sfp(hw)) {
3586 ixgbe_sfp_link_config(adapter);
3587 } else {
3588 err = ixgbe_non_sfp_link_config(hw);
3589 if (err)
396e799c 3590 e_err(probe, "link_config FAILED %d\n", err);
e8e26350 3591 }
0ecc061d 3592
1da100bb 3593 /* enable transmits */
477de6ed 3594 netif_tx_start_all_queues(adapter->netdev);
1da100bb 3595
9a799d71
AK		 3596 /* bring the link up in the watchdog, this could race with our first
3597 * link up interrupt but shouldn't be a problem */
cf8280ee
JB		 3598 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
3599 adapter->link_check_timeout = jiffies;
9a799d71 3600 mod_timer(&adapter->watchdog_timer, jiffies);
c9205697
GR		 3601
3602 /* Set PF Reset Done bit so PF/VF Mail Ops can work */
3603 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
3604 ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD;
3605 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
3606
9a799d71
AK		 3607 return 0;
3608}
3609
d4f80882
AV		 3610void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
3611{
3612 WARN_ON(in_interrupt());
3613 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
3614 msleep(1);
3615 ixgbe_down(adapter);
5809a1ae
GR		 3616 /*
3617 * If SR-IOV enabled then wait a bit before bringing the adapter
3618 * back up to give the VFs time to respond to the reset. The
3619 * two second wait is based upon the watchdog timer cycle in
3620 * the VF driver.
3621 */
3622 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
3623 msleep(2000);
d4f80882
AV		 3624 ixgbe_up(adapter);
3625 clear_bit(__IXGBE_RESETTING, &adapter->state);
3626}
3627
9a799d71
AK		 3628int ixgbe_up(struct ixgbe_adapter *adapter)
3629{
3630 /* hardware has been reset, we need to reload some things */
3631 ixgbe_configure(adapter);
3632
3633 return ixgbe_up_complete(adapter);
3634}
3635
3636void ixgbe_reset(struct ixgbe_adapter *adapter)
3637{
c44ade9e 3638 struct ixgbe_hw *hw = &adapter->hw;
8ca783ab
DS		 3639 int err;
3640
3641 err = hw->mac.ops.init_hw(hw);
da4dd0f7
PWJ		 3642 switch (err) {
3643 case 0:
3644 case IXGBE_ERR_SFP_NOT_PRESENT:
3645 break;
3646 case IXGBE_ERR_MASTER_REQUESTS_PENDING:
849c4542 3647 e_dev_err("master disable timed out\n");
da4dd0f7 3648 break;
794caeb2
PWJ		 3649 case IXGBE_ERR_EEPROM_VERSION:
3650 /* We are running on a pre-production device, log a warning */
849c4542
ET		 3651 e_dev_warn("This device is a pre-production adapter/LOM. "
3652 "Please be aware there may be issuesassociated with "
3653 "your hardware. If you are experiencing problems "
3654 "please contact your Intel or hardware "
3655 "representative who provided you with this "
3656 "hardware.\n");
794caeb2 3657 break;
da4dd0f7 3658 default:
849c4542 3659 e_dev_err("Hardware Error: %d\n", err);
da4dd0f7 3660 }
9a799d71
AK		 3661
3662 /* reprogram the RAR[0] in case user changed it. */
1cdd1ec8
GR		 3663 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
3664 IXGBE_RAH_AV);
9a799d71
AK		 3665}
3666
9a799d71
AK		 3667/**
3668 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
9a799d71
AK		 3669 * @rx_ring: ring to free buffers from
3670 **/
b6ec895e 3671static void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring)
9a799d71 3672{
b6ec895e 3673 struct device *dev = rx_ring->dev;
9a799d71 3674 unsigned long size;
b6ec895e 3675 u16 i;
9a799d71 3676
84418e3b
AD		 3677 /* ring already cleared, nothing to do */
3678 if (!rx_ring->rx_buffer_info)
3679 return;
9a799d71 3680
84418e3b 3681 /* Free all the Rx ring sk_buffs */
9a799d71
AK		 3682 for (i = 0; i < rx_ring->count; i++) {
3683 struct ixgbe_rx_buffer *rx_buffer_info;
3684
3685 rx_buffer_info = &rx_ring->rx_buffer_info[i];
3686 if (rx_buffer_info->dma) {
b6ec895e 3687 dma_unmap_single(rx_ring->dev, rx_buffer_info->dma,
e8e9f696 3688 rx_ring->rx_buf_len,
1b507730 3689 DMA_FROM_DEVICE);
9a799d71
AK		 3690 rx_buffer_info->dma = 0;
3691 }
3692 if (rx_buffer_info->skb) {
f8212f97 3693 struct sk_buff *skb = rx_buffer_info->skb;
9a799d71 3694 rx_buffer_info->skb = NULL;
f8212f97
AD		 3695 do {
3696 struct sk_buff *this = skb;
e8171aaa 3697 if (IXGBE_RSC_CB(this)->delay_unmap) {
b6ec895e 3698 dma_unmap_single(dev,
1b507730 3699 IXGBE_RSC_CB(this)->dma,
e8e9f696 3700 rx_ring->rx_buf_len,
1b507730 3701 DMA_FROM_DEVICE);
fd3686a8 3702 IXGBE_RSC_CB(this)->dma = 0;
e8171aaa 3703 IXGBE_RSC_CB(skb)->delay_unmap = false;
fd3686a8 3704 }
f8212f97
AD		 3705 skb = skb->prev;
3706 dev_kfree_skb(this);
3707 } while (skb);
9a799d71
AK		 3708 }
3709 if (!rx_buffer_info->page)
3710 continue;
4f57ca6e 3711 if (rx_buffer_info->page_dma) {
b6ec895e 3712 dma_unmap_page(dev, rx_buffer_info->page_dma,
1b507730 3713 PAGE_SIZE / 2, DMA_FROM_DEVICE);
4f57ca6e
JB		 3714 rx_buffer_info->page_dma = 0;
3715 }
9a799d71
AK		 3716 put_page(rx_buffer_info->page);
3717 rx_buffer_info->page = NULL;
762f4c57 3718 rx_buffer_info->page_offset = 0;
9a799d71
AK		 3719 }
3720
3721 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
3722 memset(rx_ring->rx_buffer_info, 0, size);
3723
3724 /* Zero out the descriptor ring */
3725 memset(rx_ring->desc, 0, rx_ring->size);
3726
3727 rx_ring->next_to_clean = 0;
3728 rx_ring->next_to_use = 0;
9a799d71
AK		 3729}
3730
3731/**
3732 * ixgbe_clean_tx_ring - Free Tx Buffers
9a799d71
AK		 3733 * @tx_ring: ring to be cleaned
3734 **/
b6ec895e 3735static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring)
9a799d71
AK		 3736{
3737 struct ixgbe_tx_buffer *tx_buffer_info;
3738 unsigned long size;
b6ec895e 3739 u16 i;
9a799d71 3740
84418e3b
AD		 3741 /* ring already cleared, nothing to do */
3742 if (!tx_ring->tx_buffer_info)
3743 return;
9a799d71 3744
84418e3b 3745 /* Free all the Tx ring sk_buffs */
9a799d71
AK		 3746 for (i = 0; i < tx_ring->count; i++) {
3747 tx_buffer_info = &tx_ring->tx_buffer_info[i];
b6ec895e 3748 ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer_info);
9a799d71
AK		 3749 }
3750
3751 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
3752 memset(tx_ring->tx_buffer_info, 0, size);
3753
3754 /* Zero out the descriptor ring */
3755 memset(tx_ring->desc, 0, tx_ring->size);
3756
3757 tx_ring->next_to_use = 0;
3758 tx_ring->next_to_clean = 0;
9a799d71
AK		 3759}
3760
3761/**
021230d4 3762 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
9a799d71
AK		 3763 * @adapter: board private structure
3764 **/
021230d4 3765static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter)
9a799d71
AK		 3766{
3767 int i;
3768
021230d4 3769 for (i = 0; i < adapter->num_rx_queues; i++)
b6ec895e 3770 ixgbe_clean_rx_ring(adapter->rx_ring[i]);
9a799d71
AK		 3771}
3772
3773/**
021230d4 3774 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
9a799d71
AK		 3775 * @adapter: board private structure
3776 **/
021230d4 3777static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
9a799d71
AK		 3778{
3779 int i;
3780
021230d4 3781 for (i = 0; i < adapter->num_tx_queues; i++)
b6ec895e 3782 ixgbe_clean_tx_ring(adapter->tx_ring[i]);
9a799d71
AK		 3783}
3784
3785void ixgbe_down(struct ixgbe_adapter *adapter)
3786{
3787 struct net_device *netdev = adapter->netdev;
7f821875 3788 struct ixgbe_hw *hw = &adapter->hw;
9a799d71 3789 u32 rxctrl;
7f821875
JB		 3790 u32 txdctl;
3791 int i, j;
b25ebfd2 3792 int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
9a799d71
AK		 3793
3794 /* signal that we are down to the interrupt handler */
3795 set_bit(__IXGBE_DOWN, &adapter->state);
3796
767081ad
GR		 3797 /* disable receive for all VFs and wait one second */
3798 if (adapter->num_vfs) {
767081ad
GR		 3799 /* ping all the active vfs to let them know we are going down */
3800 ixgbe_ping_all_vfs(adapter);
581d1aa7 3801
767081ad
GR		 3802 /* Disable all VFTE/VFRE TX/RX */
3803 ixgbe_disable_tx_rx(adapter);
581d1aa7
GR		 3804
3805 /* Mark all the VFs as inactive */
3806 for (i = 0 ; i < adapter->num_vfs; i++)
3807 adapter->vfinfo[i].clear_to_send = 0;
767081ad
GR		 3808 }
3809
9a799d71 3810 /* disable receives */
7f821875
JB		 3811 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3812 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
9a799d71 3813
7f821875 3814 IXGBE_WRITE_FLUSH(hw);
9a799d71
AK		 3815 msleep(10);
3816
7f821875
JB		 3817 netif_tx_stop_all_queues(netdev);
3818
0a1f87cb
DS		 3819 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
3820 del_timer_sync(&adapter->sfp_timer);
9a799d71 3821 del_timer_sync(&adapter->watchdog_timer);
cf8280ee 3822 cancel_work_sync(&adapter->watchdog_task);
9a799d71 3823
c0dfb90e
JF		 3824 netif_carrier_off(netdev);
3825 netif_tx_disable(netdev);
3826
3827 ixgbe_irq_disable(adapter);
3828
3829 ixgbe_napi_disable_all(adapter);
3830
b25ebfd2
PW		 3831 /* Cleanup the affinity_hint CPU mask memory and callback */
3832 for (i = 0; i < num_q_vectors; i++) {
3833 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
3834 /* clear the affinity_mask in the IRQ descriptor */
3835 irq_set_affinity_hint(adapter->msix_entries[i]. vector, NULL);
3836 /* release the CPU mask memory */
3837 free_cpumask_var(q_vector->affinity_mask);
3838 }
3839
c4cf55e5
PWJ		 3840 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
3841 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
3842 cancel_work_sync(&adapter->fdir_reinit_task);
3843
119fc60a
MC		 3844 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
3845 cancel_work_sync(&adapter->check_overtemp_task);
3846
7f821875
JB		 3847 /* disable transmits in the hardware now that interrupts are off */
3848 for (i = 0; i < adapter->num_tx_queues; i++) {
4a0b9ca0 3849 j = adapter->tx_ring[i]->reg_idx;
7f821875
JB		 3850 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
3851 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j),
e8e9f696 3852 (txdctl & ~IXGBE_TXDCTL_ENABLE));
7f821875 3853 }
88512539
PW		 3854 /* Disable the Tx DMA engine on 82599 */
3855 if (hw->mac.type == ixgbe_mac_82599EB)
3856 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL,
e8e9f696
JP		 3857 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
3858 ~IXGBE_DMATXCTL_TE));
7f821875 3859
9f756f01
JF		 3860 /* power down the optics */
3861 if (hw->phy.multispeed_fiber)
3862 hw->mac.ops.disable_tx_laser(hw);
3863
9a713e7c
PW		 3864 /* clear n-tuple filters that are cached */
3865 ethtool_ntuple_flush(netdev);
3866
6f4a0e45
PL		 3867 if (!pci_channel_offline(adapter->pdev))
3868 ixgbe_reset(adapter);
9a799d71
AK		 3869 ixgbe_clean_all_tx_rings(adapter);
3870 ixgbe_clean_all_rx_rings(adapter);
3871
5dd2d332 3872#ifdef CONFIG_IXGBE_DCA
96b0e0f6 3873 /* since we reset the hardware DCA settings were cleared */
e35ec126 3874 ixgbe_setup_dca(adapter);
96b0e0f6 3875#endif
9a799d71
AK		 3876}
3877
9a799d71 3878/**
021230d4
AV		 3879 * ixgbe_poll - NAPI Rx polling callback
3880 * @napi: structure for representing this polling device
3881 * @budget: how many packets driver is allowed to clean
3882 *
3883 * This function is used for legacy and MSI, NAPI mode
9a799d71 3884 **/
021230d4 3885static int ixgbe_poll(struct napi_struct *napi, int budget)
9a799d71 3886{
9a1a69ad 3887 struct ixgbe_q_vector *q_vector =
e8e9f696 3888 container_of(napi, struct ixgbe_q_vector, napi);
021230d4 3889 struct ixgbe_adapter *adapter = q_vector->adapter;
9a1a69ad 3890 int tx_clean_complete, work_done = 0;
9a799d71 3891
5dd2d332 3892#ifdef CONFIG_IXGBE_DCA
bd0362dd 3893 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
4a0b9ca0
PW		 3894 ixgbe_update_tx_dca(adapter, adapter->tx_ring[0]);
3895 ixgbe_update_rx_dca(adapter, adapter->rx_ring[0]);
bd0362dd
JC		 3896 }
3897#endif
3898
4a0b9ca0
PW		 3899 tx_clean_complete = ixgbe_clean_tx_irq(q_vector, adapter->tx_ring[0]);
3900 ixgbe_clean_rx_irq(q_vector, adapter->rx_ring[0], &work_done, budget);
9a799d71 3901
9a1a69ad 3902 if (!tx_clean_complete)
d2c7ddd6
DM		 3903 work_done = budget;
3904
53e52c72
DM		 3905 /* If budget not fully consumed, exit the polling mode */
3906 if (work_done < budget) {
288379f0 3907 napi_complete(napi);
f7554a2b 3908 if (adapter->rx_itr_setting & 1)
f494e8fa 3909 ixgbe_set_itr(adapter);
d4f80882 3910 if (!test_bit(__IXGBE_DOWN, &adapter->state))
835462fc 3911 ixgbe_irq_enable_queues(adapter, IXGBE_EIMS_RTX_QUEUE);
9a799d71 3912 }
9a799d71
AK		 3913 return work_done;
3914}
3915
3916/**
3917 * ixgbe_tx_timeout - Respond to a Tx Hang
3918 * @netdev: network interface device structure
3919 **/
3920static void ixgbe_tx_timeout(struct net_device *netdev)
3921{
3922 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3923
3924 /* Do the reset outside of interrupt context */
3925 schedule_work(&adapter->reset_task);
3926}
3927
3928static void ixgbe_reset_task(struct work_struct *work)
3929{
3930 struct ixgbe_adapter *adapter;
3931 adapter = container_of(work, struct ixgbe_adapter, reset_task);
3932
2f90b865
AD		 3933 /* If we're already down or resetting, just bail */
3934 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
3935 test_bit(__IXGBE_RESETTING, &adapter->state))
3936 return;
3937
9a799d71
AK		 3938 adapter->tx_timeout_count++;
3939
dcd79aeb
TI		 3940 ixgbe_dump(adapter);
3941 netdev_err(adapter->netdev, "Reset adapter\n");
d4f80882 3942 ixgbe_reinit_locked(adapter);
9a799d71
AK		 3943}
3944
bc97114d
PWJ		 3945#ifdef CONFIG_IXGBE_DCB
3946static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter)
b9804972 3947{
bc97114d 3948 bool ret = false;
0cefafad 3949 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_DCB];
b9804972 3950
0cefafad
JB		 3951 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
3952 return ret;
3953
3954 f->mask = 0x7 << 3;
3955 adapter->num_rx_queues = f->indices;
3956 adapter->num_tx_queues = f->indices;
3957 ret = true;
2f90b865 3958
bc97114d
PWJ		 3959 return ret;
3960}
3961#endif
3962
4df10466
JB		 3963/**
3964 * ixgbe_set_rss_queues: Allocate queues for RSS
3965 * @adapter: board private structure to initialize
3966 *
3967 * This is our "base" multiqueue mode. RSS (Receive Side Scaling) will try
3968 * to allocate one Rx queue per CPU, and if available, one Tx queue per CPU.
3969 *
3970 **/
bc97114d
PWJ		 3971static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter)
3972{
3973 bool ret = false;
0cefafad 3974 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_RSS];
bc97114d
PWJ		 3975
3976 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
0cefafad
JB		 3977 f->mask = 0xF;
3978 adapter->num_rx_queues = f->indices;
3979 adapter->num_tx_queues = f->indices;
bc97114d
PWJ		 3980 ret = true;
3981 } else {
bc97114d 3982 ret = false;
b9804972
JB		 3983 }
3984
bc97114d
PWJ		 3985 return ret;
3986}
3987
c4cf55e5
PWJ		 3988/**
3989 * ixgbe_set_fdir_queues: Allocate queues for Flow Director
3990 * @adapter: board private structure to initialize
3991 *
3992 * Flow Director is an advanced Rx filter, attempting to get Rx flows back
3993 * to the original CPU that initiated the Tx session. This runs in addition
3994 * to RSS, so if a packet doesn't match an FDIR filter, we can still spread the
3995 * Rx load across CPUs using RSS.
3996 *
3997 **/
e8e9f696 3998static inline bool ixgbe_set_fdir_queues(struct ixgbe_adapter *adapter)
c4cf55e5
PWJ		 3999{
4000 bool ret = false;
4001 struct ixgbe_ring_feature *f_fdir = &adapter->ring_feature[RING_F_FDIR];
4002
4003 f_fdir->indices = min((int)num_online_cpus(), f_fdir->indices);
4004 f_fdir->mask = 0;
4005
4006 /* Flow Director must have RSS enabled */
4007 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
4008 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
4009 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)))) {
4010 adapter->num_tx_queues = f_fdir->indices;
4011 adapter->num_rx_queues = f_fdir->indices;
4012 ret = true;
4013 } else {
4014 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
4015 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4016 }
4017 return ret;
4018}
4019
0331a832
YZ		 4020#ifdef IXGBE_FCOE
4021/**
4022 * ixgbe_set_fcoe_queues: Allocate queues for Fiber Channel over Ethernet (FCoE)
4023 * @adapter: board private structure to initialize
4024 *
4025 * FCoE RX FCRETA can use up to 8 rx queues for up to 8 different exchanges.
4026 * The ring feature mask is not used as a mask for FCoE, as it can take any 8
4027 * rx queues out of the max number of rx queues, instead, it is used as the
4028 * index of the first rx queue used by FCoE.
4029 *
4030 **/
4031static inline bool ixgbe_set_fcoe_queues(struct ixgbe_adapter *adapter)
4032{
4033 bool ret = false;
4034 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
4035
4036 f->indices = min((int)num_online_cpus(), f->indices);
4037 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
8de8b2e6
YZ		 4038 adapter->num_rx_queues = 1;
4039 adapter->num_tx_queues = 1;
0331a832
YZ		 4040#ifdef CONFIG_IXGBE_DCB
4041 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
396e799c 4042 e_info(probe, "FCoE enabled with DCB\n");
0331a832
YZ		 4043 ixgbe_set_dcb_queues(adapter);
4044 }
4045#endif
4046 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
396e799c 4047 e_info(probe, "FCoE enabled with RSS\n");
8faa2a78
YZ		 4048 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4049 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
4050 ixgbe_set_fdir_queues(adapter);
4051 else
4052 ixgbe_set_rss_queues(adapter);
0331a832
YZ		 4053 }
4054 /* adding FCoE rx rings to the end */
4055 f->mask = adapter->num_rx_queues;
4056 adapter->num_rx_queues += f->indices;
8de8b2e6 4057 adapter->num_tx_queues += f->indices;
0331a832
YZ		 4058
4059 ret = true;
4060 }
4061
4062 return ret;
4063}
4064
4065#endif /* IXGBE_FCOE */
1cdd1ec8
GR		 4066/**
4067 * ixgbe_set_sriov_queues: Allocate queues for IOV use
4068 * @adapter: board private structure to initialize
4069 *
4070 * IOV doesn't actually use anything, so just NAK the
4071 * request for now and let the other queue routines
4072 * figure out what to do.
4073 */
4074static inline bool ixgbe_set_sriov_queues(struct ixgbe_adapter *adapter)
4075{
4076 return false;
4077}
4078
4df10466
JB		 4079/*
4080 * ixgbe_set_num_queues: Allocate queues for device, feature dependant
4081 * @adapter: board private structure to initialize
4082 *
4083 * This is the top level queue allocation routine. The order here is very
4084 * important, starting with the "most" number of features turned on at once,
4085 * and ending with the smallest set of features. This way large combinations
4086 * can be allocated if they're turned on, and smaller combinations are the
4087 * fallthrough conditions.
4088 *
4089 **/
847f53ff 4090static int ixgbe_set_num_queues(struct ixgbe_adapter *adapter)
bc97114d 4091{
1cdd1ec8
GR		 4092 /* Start with base case */
4093 adapter->num_rx_queues = 1;
4094 adapter->num_tx_queues = 1;
4095 adapter->num_rx_pools = adapter->num_rx_queues;
4096 adapter->num_rx_queues_per_pool = 1;
4097
4098 if (ixgbe_set_sriov_queues(adapter))
847f53ff 4099 goto done;
1cdd1ec8 4100
0331a832
YZ		 4101#ifdef IXGBE_FCOE
4102 if (ixgbe_set_fcoe_queues(adapter))
4103 goto done;
4104
4105#endif /* IXGBE_FCOE */
bc97114d
PWJ		 4106#ifdef CONFIG_IXGBE_DCB
4107 if (ixgbe_set_dcb_queues(adapter))
af22ab1b 4108 goto done;
bc97114d
PWJ		 4109
4110#endif
c4cf55e5
PWJ		 4111 if (ixgbe_set_fdir_queues(adapter))
4112 goto done;
4113
bc97114d 4114 if (ixgbe_set_rss_queues(adapter))
af22ab1b
WF		 4115 goto done;
4116
4117 /* fallback to base case */
4118 adapter->num_rx_queues = 1;
4119 adapter->num_tx_queues = 1;
4120
4121done:
847f53ff 4122 /* Notify the stack of the (possibly) reduced queue counts. */
f0796d5c 4123 netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues);
847f53ff
BH		 4124 return netif_set_real_num_rx_queues(adapter->netdev,
4125 adapter->num_rx_queues);
b9804972
JB		 4126}
4127
021230d4 4128static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter,
e8e9f696 4129 int vectors)
021230d4
AV		 4130{
4131 int err, vector_threshold;
4132
4133 /* We'll want at least 3 (vector_threshold):
4134 * 1) TxQ[0] Cleanup
4135 * 2) RxQ[0] Cleanup
4136 * 3) Other (Link Status Change, etc.)
4137 * 4) TCP Timer (optional)
4138 */
4139 vector_threshold = MIN_MSIX_COUNT;
4140
4141 /* The more we get, the more we will assign to Tx/Rx Cleanup
4142 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
4143 * Right now, we simply care about how many we'll get; we'll
4144 * set them up later while requesting irq's.
4145 */
4146 while (vectors >= vector_threshold) {
4147 err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
e8e9f696 4148 vectors);
021230d4
AV		 4149 if (!err) /* Success in acquiring all requested vectors. */
4150 break;
4151 else if (err < 0)
4152 vectors = 0; /* Nasty failure, quit now */
4153 else /* err == number of vectors we should try again with */
4154 vectors = err;
4155 }
4156
4157 if (vectors < vector_threshold) {
4158 /* Can't allocate enough MSI-X interrupts? Oh well.
4159 * This just means we'll go with either a single MSI
4160 * vector or fall back to legacy interrupts.
4161 */
849c4542
ET		 4162 netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev,
4163 "Unable to allocate MSI-X interrupts\n");
021230d4
AV		 4164 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
4165 kfree(adapter->msix_entries);
4166 adapter->msix_entries = NULL;
021230d4
AV		 4167 } else {
4168 adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */
eb7f139c
PWJ		 4169 /*
4170 * Adjust for only the vectors we'll use, which is minimum
4171 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
4172 * vectors we were allocated.
4173 */
4174 adapter->num_msix_vectors = min(vectors,
e8e9f696 4175 adapter->max_msix_q_vectors + NON_Q_VECTORS);
021230d4
AV		 4176 }
4177}
4178
021230d4 4179/**
bc97114d 4180 * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS
021230d4
AV		 4181 * @adapter: board private structure to initialize
4182 *
bc97114d
PWJ		 4183 * Cache the descriptor ring offsets for RSS to the assigned rings.
4184 *
021230d4 4185 **/
bc97114d 4186static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter)
021230d4 4187{
bc97114d
PWJ		 4188 int i;
4189 bool ret = false;
4190
4191 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
4192 for (i = 0; i < adapter->num_rx_queues; i++)
4a0b9ca0 4193 adapter->rx_ring[i]->reg_idx = i;
bc97114d 4194 for (i = 0; i < adapter->num_tx_queues; i++)
4a0b9ca0 4195 adapter->tx_ring[i]->reg_idx = i;
bc97114d
PWJ		 4196 ret = true;
4197 } else {
4198 ret = false;
4199 }
4200
4201 return ret;
4202}
4203
4204#ifdef CONFIG_IXGBE_DCB
4205/**
4206 * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB
4207 * @adapter: board private structure to initialize
4208 *
4209 * Cache the descriptor ring offsets for DCB to the assigned rings.
4210 *
4211 **/
4212static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter)
4213{
4214 int i;
4215 bool ret = false;
4216 int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
4217
4218 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
4219 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
2f90b865
AD		 4220 /* the number of queues is assumed to be symmetric */
4221 for (i = 0; i < dcb_i; i++) {
4a0b9ca0
PW		 4222 adapter->rx_ring[i]->reg_idx = i << 3;
4223 adapter->tx_ring[i]->reg_idx = i << 2;
2f90b865 4224 }
bc97114d 4225 ret = true;
e8e26350 4226 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
f92ef202
PW		 4227 if (dcb_i == 8) {
4228 /*
4229 * Tx TC0 starts at: descriptor queue 0
4230 * Tx TC1 starts at: descriptor queue 32
4231 * Tx TC2 starts at: descriptor queue 64
4232 * Tx TC3 starts at: descriptor queue 80
4233 * Tx TC4 starts at: descriptor queue 96
4234 * Tx TC5 starts at: descriptor queue 104
4235 * Tx TC6 starts at: descriptor queue 112
4236 * Tx TC7 starts at: descriptor queue 120
4237 *
4238 * Rx TC0-TC7 are offset by 16 queues each
4239 */
4240 for (i = 0; i < 3; i++) {
4a0b9ca0
PW		 4241 adapter->tx_ring[i]->reg_idx = i << 5;
4242 adapter->rx_ring[i]->reg_idx = i << 4;
f92ef202
PW		 4243 }
4244 for ( ; i < 5; i++) {
4a0b9ca0 4245 adapter->tx_ring[i]->reg_idx =
e8e9f696 4246 ((i + 2) << 4);
4a0b9ca0 4247 adapter->rx_ring[i]->reg_idx = i << 4;
f92ef202
PW		 4248 }
4249 for ( ; i < dcb_i; i++) {
4a0b9ca0 4250 adapter->tx_ring[i]->reg_idx =
e8e9f696 4251 ((i + 8) << 3);
4a0b9ca0 4252 adapter->rx_ring[i]->reg_idx = i << 4;
f92ef202
PW		 4253 }
4254
4255 ret = true;
4256 } else if (dcb_i == 4) {
4257 /*
4258 * Tx TC0 starts at: descriptor queue 0
4259 * Tx TC1 starts at: descriptor queue 64
4260 * Tx TC2 starts at: descriptor queue 96
4261 * Tx TC3 starts at: descriptor queue 112
4262 *
4263 * Rx TC0-TC3 are offset by 32 queues each
4264 */
4a0b9ca0
PW		 4265 adapter->tx_ring[0]->reg_idx = 0;
4266 adapter->tx_ring[1]->reg_idx = 64;
4267 adapter->tx_ring[2]->reg_idx = 96;
4268 adapter->tx_ring[3]->reg_idx = 112;
f92ef202 4269 for (i = 0 ; i < dcb_i; i++)
4a0b9ca0 4270 adapter->rx_ring[i]->reg_idx = i << 5;
f92ef202
PW		 4271
4272 ret = true;
4273 } else {
4274 ret = false;
e8e26350 4275 }
bc97114d
PWJ		 4276 } else {
4277 ret = false;
021230d4 4278 }
bc97114d
PWJ		 4279 } else {
4280 ret = false;
021230d4 4281 }
bc97114d
PWJ		 4282
4283 return ret;
4284}
4285#endif
4286
c4cf55e5
PWJ		 4287/**
4288 * ixgbe_cache_ring_fdir - Descriptor ring to register mapping for Flow Director
4289 * @adapter: board private structure to initialize
4290 *
4291 * Cache the descriptor ring offsets for Flow Director to the assigned rings.
4292 *
4293 **/
e8e9f696 4294static inline bool ixgbe_cache_ring_fdir(struct ixgbe_adapter *adapter)
c4cf55e5
PWJ		 4295{
4296 int i;
4297 bool ret = false;
4298
4299 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
4300 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4301 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))) {
4302 for (i = 0; i < adapter->num_rx_queues; i++)
4a0b9ca0 4303 adapter->rx_ring[i]->reg_idx = i;
c4cf55e5 4304 for (i = 0; i < adapter->num_tx_queues; i++)
4a0b9ca0 4305 adapter->tx_ring[i]->reg_idx = i;
c4cf55e5
PWJ		 4306 ret = true;
4307 }
4308
4309 return ret;
4310}
4311
0331a832
YZ		 4312#ifdef IXGBE_FCOE
4313/**
4314 * ixgbe_cache_ring_fcoe - Descriptor ring to register mapping for the FCoE
4315 * @adapter: board private structure to initialize
4316 *
4317 * Cache the descriptor ring offsets for FCoE mode to the assigned rings.
4318 *
4319 */
4320static inline bool ixgbe_cache_ring_fcoe(struct ixgbe_adapter *adapter)
4321{
8de8b2e6 4322 int i, fcoe_rx_i = 0, fcoe_tx_i = 0;
0331a832
YZ		 4323 bool ret = false;
4324 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
4325
4326 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
4327#ifdef CONFIG_IXGBE_DCB
4328 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
8de8b2e6
YZ		 4329 struct ixgbe_fcoe *fcoe = &adapter->fcoe;
4330
0331a832 4331 ixgbe_cache_ring_dcb(adapter);
8de8b2e6 4332 /* find out queues in TC for FCoE */
4a0b9ca0
PW		 4333 fcoe_rx_i = adapter->rx_ring[fcoe->tc]->reg_idx + 1;
4334 fcoe_tx_i = adapter->tx_ring[fcoe->tc]->reg_idx + 1;
8de8b2e6
YZ		 4335 /*
4336 * In 82599, the number of Tx queues for each traffic
4337 * class for both 8-TC and 4-TC modes are:
4338 * TCs : TC0 TC1 TC2 TC3 TC4 TC5 TC6 TC7
4339 * 8 TCs: 32 32 16 16 8 8 8 8
4340 * 4 TCs: 64 64 32 32
4341 * We have max 8 queues for FCoE, where 8 the is
4342 * FCoE redirection table size. If TC for FCoE is
4343 * less than or equal to TC3, we have enough queues
4344 * to add max of 8 queues for FCoE, so we start FCoE
4345 * tx descriptor from the next one, i.e., reg_idx + 1.
4346 * If TC for FCoE is above TC3, implying 8 TC mode,
4347 * and we need 8 for FCoE, we have to take all queues
4348 * in that traffic class for FCoE.
4349 */
4350 if ((f->indices == IXGBE_FCRETA_SIZE) && (fcoe->tc > 3))
4351 fcoe_tx_i--;
0331a832
YZ		 4352 }
4353#endif /* CONFIG_IXGBE_DCB */
4354 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
8faa2a78
YZ		 4355 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4356 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
4357 ixgbe_cache_ring_fdir(adapter);
4358 else
4359 ixgbe_cache_ring_rss(adapter);
4360
8de8b2e6
YZ		 4361 fcoe_rx_i = f->mask;
4362 fcoe_tx_i = f->mask;
4363 }
4364 for (i = 0; i < f->indices; i++, fcoe_rx_i++, fcoe_tx_i++) {
4a0b9ca0
PW		 4365 adapter->rx_ring[f->mask + i]->reg_idx = fcoe_rx_i;
4366 adapter->tx_ring[f->mask + i]->reg_idx = fcoe_tx_i;
0331a832 4367 }
0331a832
YZ		 4368 ret = true;
4369 }
4370 return ret;
4371}
4372
4373#endif /* IXGBE_FCOE */
1cdd1ec8
GR		 4374/**
4375 * ixgbe_cache_ring_sriov - Descriptor ring to register mapping for sriov
4376 * @adapter: board private structure to initialize
4377 *
4378 * SR-IOV doesn't use any descriptor rings but changes the default if
4379 * no other mapping is used.
4380 *
4381 */
4382static inline bool ixgbe_cache_ring_sriov(struct ixgbe_adapter *adapter)
4383{
4a0b9ca0
PW		 4384 adapter->rx_ring[0]->reg_idx = adapter->num_vfs * 2;
4385 adapter->tx_ring[0]->reg_idx = adapter->num_vfs * 2;
1cdd1ec8
GR		 4386 if (adapter->num_vfs)
4387 return true;
4388 else
4389 return false;
4390}
4391
bc97114d
PWJ		 4392/**
4393 * ixgbe_cache_ring_register - Descriptor ring to register mapping
4394 * @adapter: board private structure to initialize
4395 *
4396 * Once we know the feature-set enabled for the device, we'll cache
4397 * the register offset the descriptor ring is assigned to.
4398 *
4399 * Note, the order the various feature calls is important. It must start with
4400 * the "most" features enabled at the same time, then trickle down to the
4401 * least amount of features turned on at once.
4402 **/
4403static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter)
4404{
4405 /* start with default case */
4a0b9ca0
PW		 4406 adapter->rx_ring[0]->reg_idx = 0;
4407 adapter->tx_ring[0]->reg_idx = 0;
bc97114d 4408
1cdd1ec8
GR		 4409 if (ixgbe_cache_ring_sriov(adapter))
4410 return;
4411
0331a832
YZ		 4412#ifdef IXGBE_FCOE
4413 if (ixgbe_cache_ring_fcoe(adapter))
4414 return;
4415
4416#endif /* IXGBE_FCOE */
bc97114d
PWJ		 4417#ifdef CONFIG_IXGBE_DCB
4418 if (ixgbe_cache_ring_dcb(adapter))
4419 return;
4420
4421#endif
c4cf55e5
PWJ		 4422 if (ixgbe_cache_ring_fdir(adapter))
4423 return;
4424
bc97114d
PWJ		 4425 if (ixgbe_cache_ring_rss(adapter))
4426 return;
021230d4
AV		 4427}
4428
9a799d71
AK		 4429/**
4430 * ixgbe_alloc_queues - Allocate memory for all rings
4431 * @adapter: board private structure to initialize
4432 *
4433 * We allocate one ring per queue at run-time since we don't know the
4df10466
JB		 4434 * number of queues at compile-time. The polling_netdev array is
4435 * intended for Multiqueue, but should work fine with a single queue.
9a799d71 4436 **/
2f90b865 4437static int ixgbe_alloc_queues(struct ixgbe_adapter *adapter)
9a799d71
AK		 4438{
4439 int i;
b6ec895e 4440 int rx_count;
4a0b9ca0 4441 int orig_node = adapter->node;
9a799d71 4442
021230d4 4443 for (i = 0; i < adapter->num_tx_queues; i++) {
4a0b9ca0
PW		 4444 struct ixgbe_ring *ring = adapter->tx_ring[i];
4445 if (orig_node == -1) {
4446 int cur_node = next_online_node(adapter->node);
4447 if (cur_node == MAX_NUMNODES)
4448 cur_node = first_online_node;
4449 adapter->node = cur_node;
4450 }
4451 ring = kzalloc_node(sizeof(struct ixgbe_ring), GFP_KERNEL,
e8e9f696 4452 adapter->node);
4a0b9ca0
PW		 4453 if (!ring)
4454 ring = kzalloc(sizeof(struct ixgbe_ring), GFP_KERNEL);
4455 if (!ring)
4456 goto err_tx_ring_allocation;
4457 ring->count = adapter->tx_ring_count;
4458 ring->queue_index = i;
b6ec895e 4459 ring->dev = &adapter->pdev->dev;
fc77dc3c 4460 ring->netdev = adapter->netdev;
4a0b9ca0
PW		 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
b6ec895e 4469 rx_count = adapter->rx_ring_count;
9a799d71 4470 for (i = 0; i < adapter->num_rx_queues; i++) {
4a0b9ca0
PW		 4471 struct ixgbe_ring *ring = adapter->rx_ring[i];
4472 if (orig_node == -1) {
4473 int cur_node = next_online_node(adapter->node);
4474 if (cur_node == MAX_NUMNODES)
4475 cur_node = first_online_node;
4476 adapter->node = cur_node;
4477 }
4478 ring = kzalloc_node(sizeof(struct ixgbe_ring), GFP_KERNEL,
e8e9f696 4479 adapter->node);
4a0b9ca0
PW		 4480 if (!ring)
4481 ring = kzalloc(sizeof(struct ixgbe_ring), GFP_KERNEL);
4482 if (!ring)
4483 goto err_rx_ring_allocation;
b6ec895e 4484 ring->count = rx_count;
4a0b9ca0 4485 ring->queue_index = i;
b6ec895e 4486 ring->dev = &adapter->pdev->dev;
fc77dc3c 4487 ring->netdev = adapter->netdev;
4a0b9ca0
PW		 4488 ring->numa_node = adapter->node;
4489
4490 adapter->rx_ring[i] = ring;
021230d4
AV		 4491 }
4492
4a0b9ca0
PW		 4493 /* Restore the adapter's original node */
4494 adapter->node = orig_node;
4495
021230d4
AV		 4496 ixgbe_cache_ring_register(adapter);
4497
4498 return 0;
4499
4500err_rx_ring_allocation:
4a0b9ca0
PW		 4501 for (i = 0; i < adapter->num_tx_queues; i++)
4502 kfree(adapter->tx_ring[i]);
021230d4
AV		 4503err_tx_ring_allocation:
4504 return -ENOMEM;
4505}
4506
4507/**
4508 * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported
4509 * @adapter: board private structure to initialize
4510 *
4511 * Attempt to configure the interrupts using the best available
4512 * capabilities of the hardware and the kernel.
4513 **/
feea6a57 4514static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter)
021230d4 4515{
8be0e467 4516 struct ixgbe_hw *hw = &adapter->hw;
021230d4
AV		 4517 int err = 0;
4518 int vector, v_budget;
4519
4520 /*
4521 * It's easy to be greedy for MSI-X vectors, but it really
4522 * doesn't do us much good if we have a lot more vectors
4523 * than CPU's. So let's be conservative and only ask for
342bde1b 4524 * (roughly) the same number of vectors as there are CPU's.
021230d4
AV		 4525 */
4526 v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
e8e9f696 4527 (int)num_online_cpus()) + NON_Q_VECTORS;
021230d4
AV		 4528
4529 /*
4530 * At the same time, hardware can only support a maximum of
8be0e467
PW		 4531 * hw.mac->max_msix_vectors vectors. With features
4532 * such as RSS and VMDq, we can easily surpass the number of Rx and Tx
4533 * descriptor queues supported by our device. Thus, we cap it off in
4534 * those rare cases where the cpu count also exceeds our vector limit.
021230d4 4535 */
8be0e467 4536 v_budget = min(v_budget, (int)hw->mac.max_msix_vectors);
021230d4
AV		 4537
4538 /* A failure in MSI-X entry allocation isn't fatal, but it does
4539 * mean we disable MSI-X capabilities of the adapter. */
4540 adapter->msix_entries = kcalloc(v_budget,
e8e9f696 4541 sizeof(struct msix_entry), GFP_KERNEL);
7a921c93
AD		 4542 if (adapter->msix_entries) {
4543 for (vector = 0; vector < v_budget; vector++)
4544 adapter->msix_entries[vector].entry = vector;
021230d4 4545
7a921c93 4546 ixgbe_acquire_msix_vectors(adapter, v_budget);
021230d4 4547
7a921c93
AD		 4548 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
4549 goto out;
4550 }
26d27844 4551
7a921c93
AD		 4552 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
4553 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
c4cf55e5
PWJ		 4554 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
4555 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4556 adapter->atr_sample_rate = 0;
1cdd1ec8
GR		 4557 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
4558 ixgbe_disable_sriov(adapter);
4559
847f53ff
BH		 4560 err = ixgbe_set_num_queues(adapter);
4561 if (err)
4562 return err;
021230d4 4563
021230d4
AV		 4564 err = pci_enable_msi(adapter->pdev);
4565 if (!err) {
4566 adapter->flags |= IXGBE_FLAG_MSI_ENABLED;
4567 } else {
849c4542
ET		 4568 netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev,
4569 "Unable to allocate MSI interrupt, "
4570 "falling back to legacy. Error: %d\n", err);
021230d4
AV		 4571 /* reset err */
4572 err = 0;
4573 }
4574
4575out:
021230d4
AV		 4576 return err;
4577}
4578
7a921c93
AD		 4579/**
4580 * ixgbe_alloc_q_vectors - Allocate memory for interrupt vectors
4581 * @adapter: board private structure to initialize
4582 *
4583 * We allocate one q_vector per queue interrupt. If allocation fails we
4584 * return -ENOMEM.
4585 **/
4586static int ixgbe_alloc_q_vectors(struct ixgbe_adapter *adapter)
4587{
4588 int q_idx, num_q_vectors;
4589 struct ixgbe_q_vector *q_vector;
4590 int napi_vectors;
4591 int (*poll)(struct napi_struct *, int);
4592
4593 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
4594 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
4595 napi_vectors = adapter->num_rx_queues;
91281fd3 4596 poll = &ixgbe_clean_rxtx_many;
7a921c93
AD		 4597 } else {
4598 num_q_vectors = 1;
4599 napi_vectors = 1;
4600 poll = &ixgbe_poll;
4601 }
4602
4603 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
1a6c14a2 4604 q_vector = kzalloc_node(sizeof(struct ixgbe_q_vector),
e8e9f696 4605 GFP_KERNEL, adapter->node);
1a6c14a2
JB		 4606 if (!q_vector)
4607 q_vector = kzalloc(sizeof(struct ixgbe_q_vector),
e8e9f696 4608 GFP_KERNEL);
7a921c93
AD		 4609 if (!q_vector)
4610 goto err_out;
4611 q_vector->adapter = adapter;
f7554a2b
NS		 4612 if (q_vector->txr_count && !q_vector->rxr_count)
4613 q_vector->eitr = adapter->tx_eitr_param;
4614 else
4615 q_vector->eitr = adapter->rx_eitr_param;
fe49f04a 4616 q_vector->v_idx = q_idx;
91281fd3 4617 netif_napi_add(adapter->netdev, &q_vector->napi, (*poll), 64);
7a921c93
AD		 4618 adapter->q_vector[q_idx] = q_vector;
4619 }
4620
4621 return 0;
4622
4623err_out:
4624 while (q_idx) {
4625 q_idx--;
4626 q_vector = adapter->q_vector[q_idx];
4627 netif_napi_del(&q_vector->napi);
4628 kfree(q_vector);
4629 adapter->q_vector[q_idx] = NULL;
4630 }
4631 return -ENOMEM;
4632}
4633
4634/**
4635 * ixgbe_free_q_vectors - Free memory allocated for interrupt vectors
4636 * @adapter: board private structure to initialize
4637 *
4638 * This function frees the memory allocated to the q_vectors. In addition if
4639 * NAPI is enabled it will delete any references to the NAPI struct prior
4640 * to freeing the q_vector.
4641 **/
4642static void ixgbe_free_q_vectors(struct ixgbe_adapter *adapter)
4643{
4644 int q_idx, num_q_vectors;
7a921c93 4645
91281fd3 4646 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
7a921c93 4647 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
91281fd3 4648 else
7a921c93 4649 num_q_vectors = 1;
7a921c93
AD		 4650
4651 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
4652 struct ixgbe_q_vector *q_vector = adapter->q_vector[q_idx];
7a921c93 4653 adapter->q_vector[q_idx] = NULL;
91281fd3 4654 netif_napi_del(&q_vector->napi);
7a921c93
AD		 4655 kfree(q_vector);
4656 }
4657}
4658
7b25cdba 4659static void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter)
021230d4
AV		 4660{
4661 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
4662 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
4663 pci_disable_msix(adapter->pdev);
4664 kfree(adapter->msix_entries);
4665 adapter->msix_entries = NULL;
4666 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
4667 adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED;
4668 pci_disable_msi(adapter->pdev);
4669 }
021230d4
AV		 4670}
4671
4672/**
4673 * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme
4674 * @adapter: board private structure to initialize
4675 *
4676 * We determine which interrupt scheme to use based on...
4677 * - Kernel support (MSI, MSI-X)
4678 * - which can be user-defined (via MODULE_PARAM)
4679 * - Hardware queue count (num_*_queues)
4680 * - defined by miscellaneous hardware support/features (RSS, etc.)
4681 **/
2f90b865 4682int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter)
021230d4
AV		 4683{
4684 int err;
4685
4686 /* Number of supported queues */
847f53ff
BH		 4687 err = ixgbe_set_num_queues(adapter);
4688 if (err)
4689 return err;
021230d4 4690
021230d4
AV		 4691 err = ixgbe_set_interrupt_capability(adapter);
4692 if (err) {
849c4542 4693 e_dev_err("Unable to setup interrupt capabilities\n");
021230d4 4694 goto err_set_interrupt;
9a799d71
AK		 4695 }
4696
7a921c93
AD		 4697 err = ixgbe_alloc_q_vectors(adapter);
4698 if (err) {
849c4542 4699 e_dev_err("Unable to allocate memory for queue vectors\n");
7a921c93
AD		 4700 goto err_alloc_q_vectors;
4701 }
4702
4703 err = ixgbe_alloc_queues(adapter);
4704 if (err) {
849c4542 4705 e_dev_err("Unable to allocate memory for queues\n");
7a921c93
AD		 4706 goto err_alloc_queues;
4707 }
4708
849c4542 4709 e_dev_info("Multiqueue %s: Rx Queue count = %u, Tx Queue count = %u\n",
396e799c
ET		 4710 (adapter->num_rx_queues > 1) ? "Enabled" : "Disabled",
4711 adapter->num_rx_queues, adapter->num_tx_queues);
021230d4
AV		 4712
4713 set_bit(__IXGBE_DOWN, &adapter->state);
4714
9a799d71 4715 return 0;
021230d4 4716
7a921c93
AD		 4717err_alloc_queues:
4718 ixgbe_free_q_vectors(adapter);
4719err_alloc_q_vectors:
4720 ixgbe_reset_interrupt_capability(adapter);
021230d4 4721err_set_interrupt:
7a921c93
AD		 4722 return err;
4723}
4724
1a51502b
ED		 4725static void ring_free_rcu(struct rcu_head *head)
4726{
4727 kfree(container_of(head, struct ixgbe_ring, rcu));
4728}
4729
7a921c93
AD		 4730/**
4731 * ixgbe_clear_interrupt_scheme - Clear the current interrupt scheme settings
4732 * @adapter: board private structure to clear interrupt scheme on
4733 *
4734 * We go through and clear interrupt specific resources and reset the structure
4735 * to pre-load conditions
4736 **/
4737void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter *adapter)
4738{
4a0b9ca0
PW		 4739 int i;
4740
4741 for (i = 0; i < adapter->num_tx_queues; i++) {
4742 kfree(adapter->tx_ring[i]);
4743 adapter->tx_ring[i] = NULL;
4744 }
4745 for (i = 0; i < adapter->num_rx_queues; i++) {
1a51502b
ED		 4746 struct ixgbe_ring *ring = adapter->rx_ring[i];
4747
4748 /* ixgbe_get_stats64() might access this ring, we must wait
4749 * a grace period before freeing it.
4750 */
4751 call_rcu(&ring->rcu, ring_free_rcu);
4a0b9ca0
PW		 4752 adapter->rx_ring[i] = NULL;
4753 }
7a921c93
AD		 4754
4755 ixgbe_free_q_vectors(adapter);
4756 ixgbe_reset_interrupt_capability(adapter);
9a799d71
AK		 4757}
4758
c4900be0
DS		 4759/**
4760 * ixgbe_sfp_timer - worker thread to find a missing module
4761 * @data: pointer to our adapter struct
4762 **/
4763static void ixgbe_sfp_timer(unsigned long data)
4764{
4765 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
4766
4df10466
JB		 4767 /*
4768 * Do the sfp_timer outside of interrupt context due to the
c4900be0
DS		 4769 * delays that sfp+ detection requires
4770 */
4771 schedule_work(&adapter->sfp_task);
4772}
4773
4774/**
4775 * ixgbe_sfp_task - worker thread to find a missing module
4776 * @work: pointer to work_struct containing our data
4777 **/
4778static void ixgbe_sfp_task(struct work_struct *work)
4779{
4780 struct ixgbe_adapter *adapter = container_of(work,
e8e9f696
JP		 4781 struct ixgbe_adapter,
4782 sfp_task);
c4900be0
DS		 4783 struct ixgbe_hw *hw = &adapter->hw;
4784
4785 if ((hw->phy.type == ixgbe_phy_nl) &&
4786 (hw->phy.sfp_type == ixgbe_sfp_type_not_present)) {
4787 s32 ret = hw->phy.ops.identify_sfp(hw);
63d6e1d8 4788 if (ret == IXGBE_ERR_SFP_NOT_PRESENT)
c4900be0
DS		 4789 goto reschedule;
4790 ret = hw->phy.ops.reset(hw);
4791 if (ret == IXGBE_ERR_SFP_NOT_SUPPORTED) {
849c4542
ET		 4792 e_dev_err("failed to initialize because an unsupported "
4793 "SFP+ module type was detected.\n");
4794 e_dev_err("Reload the driver after installing a "
4795 "supported module.\n");
c4900be0
DS		 4796 unregister_netdev(adapter->netdev);
4797 } else {
396e799c 4798 e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type);
c4900be0
DS		 4799 }
4800 /* don't need this routine any more */
4801 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
4802 }
4803 return;
4804reschedule:
4805 if (test_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state))
4806 mod_timer(&adapter->sfp_timer,
e8e9f696 4807 round_jiffies(jiffies + (2 * HZ)));
c4900be0
DS		 4808}
4809
9a799d71
AK		 4810/**
4811 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
4812 * @adapter: board private structure to initialize
4813 *
4814 * ixgbe_sw_init initializes the Adapter private data structure.
4815 * Fields are initialized based on PCI device information and
4816 * OS network device settings (MTU size).
4817 **/
4818static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
4819{
4820 struct ixgbe_hw *hw = &adapter->hw;
4821 struct pci_dev *pdev = adapter->pdev;
9a713e7c 4822 struct net_device *dev = adapter->netdev;
021230d4 4823 unsigned int rss;
7a6b6f51 4824#ifdef CONFIG_IXGBE_DCB
2f90b865
AD		 4825 int j;
4826 struct tc_configuration *tc;
4827#endif
16b61beb 4828 int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
021230d4 4829
c44ade9e
JB		 4830 /* PCI config space info */
4831
4832 hw->vendor_id = pdev->vendor;
4833 hw->device_id = pdev->device;
4834 hw->revision_id = pdev->revision;
4835 hw->subsystem_vendor_id = pdev->subsystem_vendor;
4836 hw->subsystem_device_id = pdev->subsystem_device;
4837
021230d4
AV		 4838 /* Set capability flags */
4839 rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus());
4840 adapter->ring_feature[RING_F_RSS].indices = rss;
4841 adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
2f90b865 4842 adapter->ring_feature[RING_F_DCB].indices = IXGBE_MAX_DCB_INDICES;
bf069c97
DS		 4843 if (hw->mac.type == ixgbe_mac_82598EB) {
4844 if (hw->device_id == IXGBE_DEV_ID_82598AT)
4845 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE;
e8e26350 4846 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82598;
bf069c97 4847 } else if (hw->mac.type == ixgbe_mac_82599EB) {
e8e26350 4848 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599;
0c19d6af
PWJ		 4849 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
4850 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
119fc60a
MC		 4851 if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM)
4852 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
9a713e7c
PW		 4853 if (dev->features & NETIF_F_NTUPLE) {
4854 /* Flow Director perfect filter enabled */
4855 adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4856 adapter->atr_sample_rate = 0;
4857 spin_lock_init(&adapter->fdir_perfect_lock);
4858 } else {
4859 /* Flow Director hash filters enabled */
4860 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
4861 adapter->atr_sample_rate = 20;
4862 }
c4cf55e5 4863 adapter->ring_feature[RING_F_FDIR].indices =
e8e9f696 4864 IXGBE_MAX_FDIR_INDICES;
c4cf55e5 4865 adapter->fdir_pballoc = 0;
eacd73f7 4866#ifdef IXGBE_FCOE
0d551589
YZ		 4867 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
4868 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
4869 adapter->ring_feature[RING_F_FCOE].indices = 0;
61a0f421 4870#ifdef CONFIG_IXGBE_DCB
6ee16520
YZ		 4871 /* Default traffic class to use for FCoE */
4872 adapter->fcoe.tc = IXGBE_FCOE_DEFTC;
56075a98 4873 adapter->fcoe.up = IXGBE_FCOE_DEFTC;
61a0f421 4874#endif
eacd73f7 4875#endif /* IXGBE_FCOE */
f8212f97 4876 }
2f90b865 4877
7a6b6f51 4878#ifdef CONFIG_IXGBE_DCB
2f90b865
AD		 4879 /* Configure DCB traffic classes */
4880 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
4881 tc = &adapter->dcb_cfg.tc_config[j];
4882 tc->path[DCB_TX_CONFIG].bwg_id = 0;
4883 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1);
4884 tc->path[DCB_RX_CONFIG].bwg_id = 0;
4885 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1);
4886 tc->dcb_pfc = pfc_disabled;
4887 }
4888 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100;
4889 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100;
4890 adapter->dcb_cfg.rx_pba_cfg = pba_equal;
264857b8 4891 adapter->dcb_cfg.pfc_mode_enable = false;
2f90b865
AD		 4892 adapter->dcb_cfg.round_robin_enable = false;
4893 adapter->dcb_set_bitmap = 0x00;
4894 ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg,
e8e9f696 4895 adapter->ring_feature[RING_F_DCB].indices);
2f90b865
AD		 4896
4897#endif
9a799d71
AK		 4898
4899 /* default flow control settings */
cd7664f6 4900 hw->fc.requested_mode = ixgbe_fc_full;
71fd570b 4901 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */
264857b8
PWJ		 4902#ifdef CONFIG_DCB
4903 adapter->last_lfc_mode = hw->fc.current_mode;
4904#endif
16b61beb
JF		 4905 hw->fc.high_water = FC_HIGH_WATER(max_frame);
4906 hw->fc.low_water = FC_LOW_WATER(max_frame);
2b9ade93
JB		 4907 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
4908 hw->fc.send_xon = true;
71fd570b 4909 hw->fc.disable_fc_autoneg = false;
9a799d71 4910
30efa5a3 4911 /* enable itr by default in dynamic mode */
f7554a2b
NS		 4912 adapter->rx_itr_setting = 1;
4913 adapter->rx_eitr_param = 20000;
4914 adapter->tx_itr_setting = 1;
4915 adapter->tx_eitr_param = 10000;
30efa5a3
JB		 4916
4917 /* set defaults for eitr in MegaBytes */
4918 adapter->eitr_low = 10;
4919 adapter->eitr_high = 20;
4920
4921 /* set default ring sizes */
4922 adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
4923 adapter->rx_ring_count = IXGBE_DEFAULT_RXD;
4924
9a799d71 4925 /* initialize eeprom parameters */
c44ade9e 4926 if (ixgbe_init_eeprom_params_generic(hw)) {
849c4542 4927 e_dev_err("EEPROM initialization failed\n");
9a799d71
AK		 4928 return -EIO;
4929 }
4930
021230d4 4931 /* enable rx csum by default */
9a799d71
AK		 4932 adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
4933
1a6c14a2
JB		 4934 /* get assigned NUMA node */
4935 adapter->node = dev_to_node(&pdev->dev);
4936
9a799d71
AK		 4937 set_bit(__IXGBE_DOWN, &adapter->state);
4938
4939 return 0;
4940}
4941
4942/**
4943 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
3a581073 4944 * @tx_ring: tx descriptor ring (for a specific queue) to setup
9a799d71
AK		 4945 *
4946 * Return 0 on success, negative on failure
4947 **/
b6ec895e 4948int ixgbe_setup_tx_resources(struct ixgbe_ring *tx_ring)
9a799d71 4949{
b6ec895e 4950 struct device *dev = tx_ring->dev;
9a799d71
AK		 4951 int size;
4952
3a581073 4953 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
4a0b9ca0 4954 tx_ring->tx_buffer_info = vmalloc_node(size, tx_ring->numa_node);
1a6c14a2
JB		 4955 if (!tx_ring->tx_buffer_info)
4956 tx_ring->tx_buffer_info = vmalloc(size);
e01c31a5
JB		 4957 if (!tx_ring->tx_buffer_info)
4958 goto err;
3a581073 4959 memset(tx_ring->tx_buffer_info, 0, size);
9a799d71
AK		 4960
4961 /* round up to nearest 4K */
12207e49 4962 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
3a581073 4963 tx_ring->size = ALIGN(tx_ring->size, 4096);
9a799d71 4964
b6ec895e 4965 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
1b507730 4966 &tx_ring->dma, GFP_KERNEL);
e01c31a5
JB		 4967 if (!tx_ring->desc)
4968 goto err;
9a799d71 4969
3a581073
JB		 4970 tx_ring->next_to_use = 0;
4971 tx_ring->next_to_clean = 0;
4972 tx_ring->work_limit = tx_ring->count;
9a799d71 4973 return 0;
e01c31a5
JB		 4974
4975err:
4976 vfree(tx_ring->tx_buffer_info);
4977 tx_ring->tx_buffer_info = NULL;
b6ec895e 4978 dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n");
e01c31a5 4979 return -ENOMEM;
9a799d71
AK		 4980}
4981
69888674
AD		 4982/**
4983 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
4984 * @adapter: board private structure
4985 *
4986 * If this function returns with an error, then it's possible one or
4987 * more of the rings is populated (while the rest are not). It is the
4988 * callers duty to clean those orphaned rings.
4989 *
4990 * Return 0 on success, negative on failure
4991 **/
4992static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
4993{
4994 int i, err = 0;
4995
4996 for (i = 0; i < adapter->num_tx_queues; i++) {
b6ec895e 4997 err = ixgbe_setup_tx_resources(adapter->tx_ring[i]);
69888674
AD		 4998 if (!err)
4999 continue;
396e799c 5000 e_err(probe, "Allocation for Tx Queue %u failed\n", i);
69888674
AD		 5001 break;
5002 }
5003
5004 return err;
5005}
5006
9a799d71
AK		 5007/**
5008 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
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 **/
b6ec895e 5013int ixgbe_setup_rx_resources(struct ixgbe_ring *rx_ring)
9a799d71 5014{
b6ec895e 5015 struct device *dev = rx_ring->dev;
021230d4 5016 int size;
9a799d71 5017
3a581073 5018 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
b6ec895e 5019 rx_ring->rx_buffer_info = vmalloc_node(size, rx_ring->numa_node);
1a6c14a2
JB		 5020 if (!rx_ring->rx_buffer_info)
5021 rx_ring->rx_buffer_info = vmalloc(size);
b6ec895e
AD		 5022 if (!rx_ring->rx_buffer_info)
5023 goto err;
3a581073 5024 memset(rx_ring->rx_buffer_info, 0, size);
9a799d71 5025
9a799d71 5026 /* Round up to nearest 4K */
3a581073
JB		 5027 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
5028 rx_ring->size = ALIGN(rx_ring->size, 4096);
9a799d71 5029
b6ec895e 5030 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
1b507730 5031 &rx_ring->dma, GFP_KERNEL);
9a799d71 5032
b6ec895e
AD		 5033 if (!rx_ring->desc)
5034 goto err;
9a799d71 5035
3a581073
JB		 5036 rx_ring->next_to_clean = 0;
5037 rx_ring->next_to_use = 0;
9a799d71
AK		 5038
5039 return 0;
b6ec895e
AD		 5040err:
5041 vfree(rx_ring->rx_buffer_info);
5042 rx_ring->rx_buffer_info = NULL;
5043 dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n");
177db6ff 5044 return -ENOMEM;
9a799d71
AK		 5045}
5046
69888674
AD		 5047/**
5048 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
5049 * @adapter: board private structure
5050 *
5051 * If this function returns with an error, then it's possible one or
5052 * more of the rings is populated (while the rest are not). It is the
5053 * callers duty to clean those orphaned rings.
5054 *
5055 * Return 0 on success, negative on failure
5056 **/
69888674
AD		 5057static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
5058{
5059 int i, err = 0;
5060
5061 for (i = 0; i < adapter->num_rx_queues; i++) {
b6ec895e 5062 err = ixgbe_setup_rx_resources(adapter->rx_ring[i]);
69888674
AD		 5063 if (!err)
5064 continue;
396e799c 5065 e_err(probe, "Allocation for Rx Queue %u failed\n", i);
69888674
AD		 5066 break;
5067 }
5068
5069 return err;
5070}
5071
9a799d71
AK		 5072/**
5073 * ixgbe_free_tx_resources - Free Tx Resources per Queue
9a799d71
AK		 5074 * @tx_ring: Tx descriptor ring for a specific queue
5075 *
5076 * Free all transmit software resources
5077 **/
b6ec895e 5078void ixgbe_free_tx_resources(struct ixgbe_ring *tx_ring)
9a799d71 5079{
b6ec895e 5080 ixgbe_clean_tx_ring(tx_ring);
9a799d71
AK		 5081
5082 vfree(tx_ring->tx_buffer_info);
5083 tx_ring->tx_buffer_info = NULL;
5084
b6ec895e
AD		 5085 /* if not set, then don't free */
5086 if (!tx_ring->desc)
5087 return;
5088
5089 dma_free_coherent(tx_ring->dev, tx_ring->size,
5090 tx_ring->desc, tx_ring->dma);
9a799d71
AK		 5091
5092 tx_ring->desc = NULL;
5093}
5094
5095/**
5096 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
5097 * @adapter: board private structure
5098 *
5099 * Free all transmit software resources
5100 **/
5101static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter)
5102{
5103 int i;
5104
5105 for (i = 0; i < adapter->num_tx_queues; i++)
4a0b9ca0 5106 if (adapter->tx_ring[i]->desc)
b6ec895e 5107 ixgbe_free_tx_resources(adapter->tx_ring[i]);
9a799d71
AK		 5108}
5109
5110/**
b4617240 5111 * ixgbe_free_rx_resources - Free Rx Resources
9a799d71
AK		 5112 * @rx_ring: ring to clean the resources from
5113 *
5114 * Free all receive software resources
5115 **/
b6ec895e 5116void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring)
9a799d71 5117{
b6ec895e 5118 ixgbe_clean_rx_ring(rx_ring);
9a799d71
AK		 5119
5120 vfree(rx_ring->rx_buffer_info);
5121 rx_ring->rx_buffer_info = NULL;
5122
b6ec895e
AD		 5123 /* if not set, then don't free */
5124 if (!rx_ring->desc)
5125 return;
5126
5127 dma_free_coherent(rx_ring->dev, rx_ring->size,
5128 rx_ring->desc, rx_ring->dma);
9a799d71
AK		 5129
5130 rx_ring->desc = NULL;
5131}
5132
5133/**
5134 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
5135 * @adapter: board private structure
5136 *
5137 * Free all receive software resources
5138 **/
5139static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter)
5140{
5141 int i;
5142
5143 for (i = 0; i < adapter->num_rx_queues; i++)
4a0b9ca0 5144 if (adapter->rx_ring[i]->desc)
b6ec895e 5145 ixgbe_free_rx_resources(adapter->rx_ring[i]);
9a799d71
AK		 5146}
5147
9a799d71
AK		 5148/**
5149 * ixgbe_change_mtu - Change the Maximum Transfer Unit
5150 * @netdev: network interface device structure
5151 * @new_mtu: new value for maximum frame size
5152 *
5153 * Returns 0 on success, negative on failure
5154 **/
5155static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
5156{
5157 struct ixgbe_adapter *adapter = netdev_priv(netdev);
16b61beb 5158 struct ixgbe_hw *hw = &adapter->hw;
9a799d71
AK		 5159 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
5160
42c783c5
JB		 5161 /* MTU < 68 is an error and causes problems on some kernels */
5162 if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
9a799d71
AK		 5163 return -EINVAL;
5164
396e799c 5165 e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu);
021230d4 5166 /* must set new MTU before calling down or up */
9a799d71
AK		 5167 netdev->mtu = new_mtu;
5168
16b61beb
JF		 5169 hw->fc.high_water = FC_HIGH_WATER(max_frame);
5170 hw->fc.low_water = FC_LOW_WATER(max_frame);
5171
d4f80882
AV		 5172 if (netif_running(netdev))
5173 ixgbe_reinit_locked(adapter);
9a799d71
AK		 5174
5175 return 0;
5176}
5177
5178/**
5179 * ixgbe_open - Called when a network interface is made active
5180 * @netdev: network interface device structure
5181 *
5182 * Returns 0 on success, negative value on failure
5183 *
5184 * The open entry point is called when a network interface is made
5185 * active by the system (IFF_UP). At this point all resources needed
5186 * for transmit and receive operations are allocated, the interrupt
5187 * handler is registered with the OS, the watchdog timer is started,
5188 * and the stack is notified that the interface is ready.
5189 **/
5190static int ixgbe_open(struct net_device *netdev)
5191{
5192 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5193 int err;
4bebfaa5
AK		 5194
5195 /* disallow open during test */
5196 if (test_bit(__IXGBE_TESTING, &adapter->state))
5197 return -EBUSY;
9a799d71 5198
54386467
JB		 5199 netif_carrier_off(netdev);
5200
9a799d71
AK		 5201 /* allocate transmit descriptors */
5202 err = ixgbe_setup_all_tx_resources(adapter);
5203 if (err)
5204 goto err_setup_tx;
5205
9a799d71
AK		 5206 /* allocate receive descriptors */
5207 err = ixgbe_setup_all_rx_resources(adapter);
5208 if (err)
5209 goto err_setup_rx;
5210
5211 ixgbe_configure(adapter);
5212
021230d4 5213 err = ixgbe_request_irq(adapter);
9a799d71
AK		 5214 if (err)
5215 goto err_req_irq;
5216
9a799d71
AK		 5217 err = ixgbe_up_complete(adapter);
5218 if (err)
5219 goto err_up;
5220
d55b53ff
JK		 5221 netif_tx_start_all_queues(netdev);
5222
9a799d71
AK		 5223 return 0;
5224
5225err_up:
5eba3699 5226 ixgbe_release_hw_control(adapter);
9a799d71
AK		 5227 ixgbe_free_irq(adapter);
5228err_req_irq:
9a799d71 5229err_setup_rx:
a20a1199 5230 ixgbe_free_all_rx_resources(adapter);
9a799d71 5231err_setup_tx:
a20a1199 5232 ixgbe_free_all_tx_resources(adapter);
9a799d71
AK		 5233 ixgbe_reset(adapter);
5234
5235 return err;
5236}
5237
5238/**
5239 * ixgbe_close - Disables a network interface
5240 * @netdev: network interface device structure
5241 *
5242 * Returns 0, this is not allowed to fail
5243 *
5244 * The close entry point is called when an interface is de-activated
5245 * by the OS. The hardware is still under the drivers control, but
5246 * needs to be disabled. A global MAC reset is issued to stop the
5247 * hardware, and all transmit and receive resources are freed.
5248 **/
5249static int ixgbe_close(struct net_device *netdev)
5250{
5251 struct ixgbe_adapter *adapter = netdev_priv(netdev);
9a799d71
AK		 5252
5253 ixgbe_down(adapter);
5254 ixgbe_free_irq(adapter);
5255
5256 ixgbe_free_all_tx_resources(adapter);
5257 ixgbe_free_all_rx_resources(adapter);
5258
5eba3699 5259 ixgbe_release_hw_control(adapter);
9a799d71
AK		 5260
5261 return 0;
5262}
5263
b3c8b4ba
AD		 5264#ifdef CONFIG_PM
5265static int ixgbe_resume(struct pci_dev *pdev)
5266{
5267 struct net_device *netdev = pci_get_drvdata(pdev);
5268 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5269 u32 err;
5270
5271 pci_set_power_state(pdev, PCI_D0);
5272 pci_restore_state(pdev);
656ab817
DS		 5273 /*
5274 * pci_restore_state clears dev->state_saved so call
5275 * pci_save_state to restore it.
5276 */
5277 pci_save_state(pdev);
9ce77666 5278
5279 err = pci_enable_device_mem(pdev);
b3c8b4ba 5280 if (err) {
849c4542 5281 e_dev_err("Cannot enable PCI device from suspend\n");
b3c8b4ba
AD		 5282 return err;
5283 }
5284 pci_set_master(pdev);
5285
dd4d8ca6 5286 pci_wake_from_d3(pdev, false);
b3c8b4ba
AD		 5287
5288 err = ixgbe_init_interrupt_scheme(adapter);
5289 if (err) {
849c4542 5290 e_dev_err("Cannot initialize interrupts for device\n");
b3c8b4ba
AD		 5291 return err;
5292 }
5293
b3c8b4ba
AD		 5294 ixgbe_reset(adapter);
5295
495dce12
WJP		 5296 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
5297
b3c8b4ba
AD		 5298 if (netif_running(netdev)) {
5299 err = ixgbe_open(adapter->netdev);
5300 if (err)
5301 return err;
5302 }
5303
5304 netif_device_attach(netdev);
5305
5306 return 0;
5307}
b3c8b4ba 5308#endif /* CONFIG_PM */
9d8d05ae
RW		 5309
5310static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
b3c8b4ba
AD		 5311{
5312 struct net_device *netdev = pci_get_drvdata(pdev);
5313 struct ixgbe_adapter *adapter = netdev_priv(netdev);
e8e26350
PW		 5314 struct ixgbe_hw *hw = &adapter->hw;
5315 u32 ctrl, fctrl;
5316 u32 wufc = adapter->wol;
b3c8b4ba
AD		 5317#ifdef CONFIG_PM
5318 int retval = 0;
5319#endif
5320
5321 netif_device_detach(netdev);
5322
5323 if (netif_running(netdev)) {
5324 ixgbe_down(adapter);
5325 ixgbe_free_irq(adapter);
5326 ixgbe_free_all_tx_resources(adapter);
5327 ixgbe_free_all_rx_resources(adapter);
5328 }
b3c8b4ba 5329
5f5ae6fc
AD		 5330 ixgbe_clear_interrupt_scheme(adapter);
5331
b3c8b4ba
AD		 5332#ifdef CONFIG_PM
5333 retval = pci_save_state(pdev);
5334 if (retval)
5335 return retval;
4df10466 5336
b3c8b4ba 5337#endif
e8e26350
PW		 5338 if (wufc) {
5339 ixgbe_set_rx_mode(netdev);
b3c8b4ba 5340
e8e26350
PW		 5341 /* turn on all-multi mode if wake on multicast is enabled */
5342 if (wufc & IXGBE_WUFC_MC) {
5343 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
5344 fctrl |= IXGBE_FCTRL_MPE;
5345 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
5346 }
5347
5348 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
5349 ctrl |= IXGBE_CTRL_GIO_DIS;
5350 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
5351
5352 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc);
5353 } else {
5354 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0);
5355 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0);
5356 }
5357
dd4d8ca6
DS		 5358 if (wufc && hw->mac.type == ixgbe_mac_82599EB)
5359 pci_wake_from_d3(pdev, true);
5360 else
5361 pci_wake_from_d3(pdev, false);
b3c8b4ba 5362
9d8d05ae
RW		 5363 *enable_wake = !!wufc;
5364
b3c8b4ba
AD		 5365 ixgbe_release_hw_control(adapter);
5366
5367 pci_disable_device(pdev);
5368
9d8d05ae
RW		 5369 return 0;
5370}
5371
5372#ifdef CONFIG_PM
5373static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
5374{
5375 int retval;
5376 bool wake;
5377
5378 retval = __ixgbe_shutdown(pdev, &wake);
5379 if (retval)
5380 return retval;
5381
5382 if (wake) {
5383 pci_prepare_to_sleep(pdev);
5384 } else {
5385 pci_wake_from_d3(pdev, false);
5386 pci_set_power_state(pdev, PCI_D3hot);
5387 }
b3c8b4ba
AD		 5388
5389 return 0;
5390}
9d8d05ae 5391#endif /* CONFIG_PM */
b3c8b4ba
AD		 5392
5393static void ixgbe_shutdown(struct pci_dev *pdev)
5394{
9d8d05ae
RW		 5395 bool wake;
5396
5397 __ixgbe_shutdown(pdev, &wake);
5398
5399 if (system_state == SYSTEM_POWER_OFF) {
5400 pci_wake_from_d3(pdev, wake);
5401 pci_set_power_state(pdev, PCI_D3hot);
5402 }
b3c8b4ba
AD		 5403}
5404
9a799d71
AK		 5405/**
5406 * ixgbe_update_stats - Update the board statistics counters.
5407 * @adapter: board private structure
5408 **/
5409void ixgbe_update_stats(struct ixgbe_adapter *adapter)
5410{
2d86f139 5411 struct net_device *netdev = adapter->netdev;
9a799d71 5412 struct ixgbe_hw *hw = &adapter->hw;
5b7da515 5413 struct ixgbe_hw_stats *hwstats = &adapter->stats;
6f11eef7
AV		 5414 u64 total_mpc = 0;
5415 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
5b7da515
AD		 5416 u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0;
5417 u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0;
5418 u64 bytes = 0, packets = 0;
9a799d71 5419
d08935c2
DS		 5420 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
5421 test_bit(__IXGBE_RESETTING, &adapter->state))
5422 return;
5423
94b982b2 5424 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
f8212f97 5425 u64 rsc_count = 0;
94b982b2 5426 u64 rsc_flush = 0;
d51019a4
PW		 5427 for (i = 0; i < 16; i++)
5428 adapter->hw_rx_no_dma_resources +=
7ca647bd 5429 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
94b982b2 5430 for (i = 0; i < adapter->num_rx_queues; i++) {
5b7da515
AD		 5431 rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count;
5432 rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush;
94b982b2
MC		 5433 }
5434 adapter->rsc_total_count = rsc_count;
5435 adapter->rsc_total_flush = rsc_flush;
d51019a4
PW		 5436 }
5437
5b7da515
AD		 5438 for (i = 0; i < adapter->num_rx_queues; i++) {
5439 struct ixgbe_ring *rx_ring = adapter->rx_ring[i];
5440 non_eop_descs += rx_ring->rx_stats.non_eop_descs;
5441 alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed;
5442 alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed;
5443 bytes += rx_ring->stats.bytes;
5444 packets += rx_ring->stats.packets;
5445 }
5446 adapter->non_eop_descs = non_eop_descs;
5447 adapter->alloc_rx_page_failed = alloc_rx_page_failed;
5448 adapter->alloc_rx_buff_failed = alloc_rx_buff_failed;
5449 netdev->stats.rx_bytes = bytes;
5450 netdev->stats.rx_packets = packets;
5451
5452 bytes = 0;
5453 packets = 0;
7ca3bc58 5454 /* gather some stats to the adapter struct that are per queue */
5b7da515
AD		 5455 for (i = 0; i < adapter->num_tx_queues; i++) {
5456 struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
5457 restart_queue += tx_ring->tx_stats.restart_queue;
5458 tx_busy += tx_ring->tx_stats.tx_busy;
5459 bytes += tx_ring->stats.bytes;
5460 packets += tx_ring->stats.packets;
5461 }
eb985f09 5462 adapter->restart_queue = restart_queue;
5b7da515
AD		 5463 adapter->tx_busy = tx_busy;
5464 netdev->stats.tx_bytes = bytes;
5465 netdev->stats.tx_packets = packets;
7ca3bc58 5466
7ca647bd 5467 hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
6f11eef7
AV		 5468 for (i = 0; i < 8; i++) {
5469 /* for packet buffers not used, the register should read 0 */
5470 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
5471 missed_rx += mpc;
7ca647bd
JP		 5472 hwstats->mpc[i] += mpc;
5473 total_mpc += hwstats->mpc[i];
e8e26350 5474 if (hw->mac.type == ixgbe_mac_82598EB)
7ca647bd
JP		 5475 hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
5476 hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i));
5477 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i));
5478 hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i));
5479 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i));
e8e26350 5480 if (hw->mac.type == ixgbe_mac_82599EB) {
7ca647bd
JP		 5481 hwstats->pxonrxc[i] +=
5482 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
5483 hwstats->pxoffrxc[i] +=
5484 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
5485 hwstats->qprdc[i] += IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
e8e26350 5486 } else {
7ca647bd
JP		 5487 hwstats->pxonrxc[i] +=
5488 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
5489 hwstats->pxoffrxc[i] +=
5490 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
e8e26350 5491 }
7ca647bd
JP		 5492 hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
5493 hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
6f11eef7 5494 }
7ca647bd 5495 hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
6f11eef7 5496 /* work around hardware counting issue */
7ca647bd 5497 hwstats->gprc -= missed_rx;
6f11eef7
AV		 5498
5499 /* 82598 hardware only has a 32 bit counter in the high register */
e8e26350 5500 if (hw->mac.type == ixgbe_mac_82599EB) {
aad71918 5501 u64 tmp;
7ca647bd 5502 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL);
e8e9f696
JP		 5503 tmp = IXGBE_READ_REG(hw, IXGBE_GORCH) & 0xF;
5504 /* 4 high bits of GORC */
7ca647bd
JP		 5505 hwstats->gorc += (tmp << 32);
5506 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL);
e8e9f696
JP		 5507 tmp = IXGBE_READ_REG(hw, IXGBE_GOTCH) & 0xF;
5508 /* 4 high bits of GOTC */
7ca647bd
JP		 5509 hwstats->gotc += (tmp << 32);
5510 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL);
e8e9f696 5511 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */
7ca647bd
JP		 5512 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
5513 hwstats->lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
5514 hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
5515 hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
6d45522c 5516#ifdef IXGBE_FCOE
7ca647bd
JP		 5517 hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC);
5518 hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC);
5519 hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC);
5520 hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC);
5521 hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC);
5522 hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC);
6d45522c 5523#endif /* IXGBE_FCOE */
e8e26350 5524 } else {
7ca647bd
JP		 5525 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
5526 hwstats->lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
5527 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
5528 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
5529 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH);
e8e26350 5530 }
9a799d71 5531 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
7ca647bd
JP		 5532 hwstats->bprc += bprc;
5533 hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
e8e26350 5534 if (hw->mac.type == ixgbe_mac_82598EB)
7ca647bd
JP		 5535 hwstats->mprc -= bprc;
5536 hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC);
5537 hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64);
5538 hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127);
5539 hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255);
5540 hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
5541 hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
5542 hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
5543 hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
6f11eef7 5544 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
7ca647bd 5545 hwstats->lxontxc += lxon;
6f11eef7 5546 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
7ca647bd
JP		 5547 hwstats->lxofftxc += lxoff;
5548 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
5549 hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
5550 hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
6f11eef7
AV		 5551 /*
5552 * 82598 errata - tx of flow control packets is included in tx counters
5553 */
5554 xon_off_tot = lxon + lxoff;
7ca647bd
JP		 5555 hwstats->gptc -= xon_off_tot;
5556 hwstats->mptc -= xon_off_tot;
5557 hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
5558 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
5559 hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
5560 hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
5561 hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
5562 hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
5563 hwstats->ptc64 -= xon_off_tot;
5564 hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
5565 hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
5566 hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
5567 hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
5568 hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
5569 hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
9a799d71
AK		 5570
5571 /* Fill out the OS statistics structure */
7ca647bd 5572 netdev->stats.multicast = hwstats->mprc;
9a799d71
AK		 5573
5574 /* Rx Errors */
7ca647bd 5575 netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec;
2d86f139 5576 netdev->stats.rx_dropped = 0;
7ca647bd
JP		 5577 netdev->stats.rx_length_errors = hwstats->rlec;
5578 netdev->stats.rx_crc_errors = hwstats->crcerrs;
2d86f139 5579 netdev->stats.rx_missed_errors = total_mpc;
9a799d71
AK		 5580}
5581
5582/**
5583 * ixgbe_watchdog - Timer Call-back
5584 * @data: pointer to adapter cast into an unsigned long
5585 **/
5586static void ixgbe_watchdog(unsigned long data)
5587{
5588 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
cf8280ee 5589 struct ixgbe_hw *hw = &adapter->hw;
fe49f04a
AD		 5590 u64 eics = 0;
5591 int i;
cf8280ee 5592
fe49f04a
AD		 5593 /*
5594 * Do the watchdog outside of interrupt context due to the lovely
5595 * delays that some of the newer hardware requires
5596 */
22d5a71b 5597
fe49f04a
AD		 5598 if (test_bit(__IXGBE_DOWN, &adapter->state))
5599 goto watchdog_short_circuit;
22d5a71b 5600
fe49f04a
AD		 5601 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
5602 /*
5603 * for legacy and MSI interrupts don't set any bits
5604 * that are enabled for EIAM, because this operation
5605 * would set *both* EIMS and EICS for any bit in EIAM
5606 */
5607 IXGBE_WRITE_REG(hw, IXGBE_EICS,
5608 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER));
5609 goto watchdog_reschedule;
5610 }
5611
5612 /* get one bit for every active tx/rx interrupt vector */
5613 for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) {
5614 struct ixgbe_q_vector *qv = adapter->q_vector[i];
5615 if (qv->rxr_count || qv->txr_count)
5616 eics |= ((u64)1 << i);
cf8280ee 5617 }
9a799d71 5618
fe49f04a
AD		 5619 /* Cause software interrupt to ensure rx rings are cleaned */
5620 ixgbe_irq_rearm_queues(adapter, eics);
5621
5622watchdog_reschedule:
5623 /* Reset the timer */
5624 mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ));
5625
5626watchdog_short_circuit:
cf8280ee
JB		 5627 schedule_work(&adapter->watchdog_task);
5628}
5629
e8e26350
PW		 5630/**
5631 * ixgbe_multispeed_fiber_task - worker thread to configure multispeed fiber
5632 * @work: pointer to work_struct containing our data
5633 **/
5634static void ixgbe_multispeed_fiber_task(struct work_struct *work)
5635{
5636 struct ixgbe_adapter *adapter = container_of(work,
e8e9f696
JP		 5637 struct ixgbe_adapter,
5638 multispeed_fiber_task);
e8e26350
PW		 5639 struct ixgbe_hw *hw = &adapter->hw;
5640 u32 autoneg;
8620a103 5641 bool negotiation;
e8e26350
PW		 5642
5643 adapter->flags |= IXGBE_FLAG_IN_SFP_LINK_TASK;
a1f25324
MC		 5644 autoneg = hw->phy.autoneg_advertised;
5645 if ((!autoneg) && (hw->mac.ops.get_link_capabilities))
8620a103 5646 hw->mac.ops.get_link_capabilities(hw, &autoneg, &negotiation);
1097cd17 5647 hw->mac.autotry_restart = false;
8620a103
MC		 5648 if (hw->mac.ops.setup_link)
5649 hw->mac.ops.setup_link(hw, autoneg, negotiation, true);
e8e26350
PW		 5650 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
5651 adapter->flags &= ~IXGBE_FLAG_IN_SFP_LINK_TASK;
5652}
5653
5654/**
5655 * ixgbe_sfp_config_module_task - worker thread to configure a new SFP+ module
5656 * @work: pointer to work_struct containing our data
5657 **/
5658static void ixgbe_sfp_config_module_task(struct work_struct *work)
5659{
5660 struct ixgbe_adapter *adapter = container_of(work,
e8e9f696
JP		 5661 struct ixgbe_adapter,
5662 sfp_config_module_task);
e8e26350
PW		 5663 struct ixgbe_hw *hw = &adapter->hw;
5664 u32 err;
5665
5666 adapter->flags |= IXGBE_FLAG_IN_SFP_MOD_TASK;
63d6e1d8
DS		 5667
5668 /* Time for electrical oscillations to settle down */
5669 msleep(100);
e8e26350 5670 err = hw->phy.ops.identify_sfp(hw);
63d6e1d8 5671
e8e26350 5672 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
849c4542
ET		 5673 e_dev_err("failed to initialize because an unsupported SFP+ "
5674 "module type was detected.\n");
5675 e_dev_err("Reload the driver after installing a supported "
5676 "module.\n");
63d6e1d8 5677 unregister_netdev(adapter->netdev);
e8e26350
PW		 5678 return;
5679 }
5680 hw->mac.ops.setup_sfp(hw);
5681
8d1c3c07 5682 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK))
e8e26350
PW		 5683 /* This will also work for DA Twinax connections */
5684 schedule_work(&adapter->multispeed_fiber_task);
5685 adapter->flags &= ~IXGBE_FLAG_IN_SFP_MOD_TASK;
5686}
5687
c4cf55e5
PWJ		 5688/**
5689 * ixgbe_fdir_reinit_task - worker thread to reinit FDIR filter table
5690 * @work: pointer to work_struct containing our data
5691 **/
5692static void ixgbe_fdir_reinit_task(struct work_struct *work)
5693{
5694 struct ixgbe_adapter *adapter = container_of(work,
e8e9f696
JP		 5695 struct ixgbe_adapter,
5696 fdir_reinit_task);
c4cf55e5
PWJ		 5697 struct ixgbe_hw *hw = &adapter->hw;
5698 int i;
5699
5700 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
5701 for (i = 0; i < adapter->num_tx_queues; i++)
5702 set_bit(__IXGBE_FDIR_INIT_DONE,
e8e9f696 5703 &(adapter->tx_ring[i]->reinit_state));
c4cf55e5 5704 } else {
396e799c 5705 e_err(probe, "failed to finish FDIR re-initialization, "
849c4542 5706 "ignored adding FDIR ATR filters\n");
c4cf55e5
PWJ		 5707 }
5708 /* Done FDIR Re-initialization, enable transmits */
5709 netif_tx_start_all_queues(adapter->netdev);
5710}
5711
10eec955
JF		 5712static DEFINE_MUTEX(ixgbe_watchdog_lock);
5713
cf8280ee 5714/**
69888674
AD		 5715 * ixgbe_watchdog_task - worker thread to bring link up
5716 * @work: pointer to work_struct containing our data
cf8280ee
JB		 5717 **/
5718static void ixgbe_watchdog_task(struct work_struct *work)
5719{
5720 struct ixgbe_adapter *adapter = container_of(work,
e8e9f696
JP		 5721 struct ixgbe_adapter,
5722 watchdog_task);
cf8280ee
JB		 5723 struct net_device *netdev = adapter->netdev;
5724 struct ixgbe_hw *hw = &adapter->hw;
10eec955
JF		 5725 u32 link_speed;
5726 bool link_up;
bc59fcda
NS		 5727 int i;
5728 struct ixgbe_ring *tx_ring;
5729 int some_tx_pending = 0;
cf8280ee 5730
10eec955
JF		 5731 mutex_lock(&ixgbe_watchdog_lock);
5732
5733 link_up = adapter->link_up;
5734 link_speed = adapter->link_speed;
cf8280ee
JB		 5735
5736 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) {
5737 hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
264857b8
PWJ		 5738 if (link_up) {
5739#ifdef CONFIG_DCB
5740 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
5741 for (i = 0; i < MAX_TRAFFIC_CLASS; i++)
620fa036 5742 hw->mac.ops.fc_enable(hw, i);
264857b8 5743 } else {
620fa036 5744 hw->mac.ops.fc_enable(hw, 0);
264857b8
PWJ		 5745 }
5746#else
620fa036 5747 hw->mac.ops.fc_enable(hw, 0);
264857b8
PWJ		 5748#endif
5749 }
5750
cf8280ee
JB		 5751 if (link_up ||
5752 time_after(jiffies, (adapter->link_check_timeout +
e8e9f696 5753 IXGBE_TRY_LINK_TIMEOUT))) {
cf8280ee 5754 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
264857b8 5755 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC);
cf8280ee
JB		 5756 }
5757 adapter->link_up = link_up;
5758 adapter->link_speed = link_speed;
5759 }
9a799d71
AK		 5760
5761 if (link_up) {
5762 if (!netif_carrier_ok(netdev)) {
e8e26350
PW		 5763 bool flow_rx, flow_tx;
5764
5765 if (hw->mac.type == ixgbe_mac_82599EB) {
5766 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN);
5767 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
078788b6
PWJ		 5768 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE);
5769 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X);
e8e26350
PW		 5770 } else {
5771 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
5772 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS);
078788b6
PWJ		 5773 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE);
5774 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X);
e8e26350
PW		 5775 }
5776
396e799c 5777 e_info(drv, "NIC Link is Up %s, Flow Control: %s\n",
a46e534b 5778 (link_speed == IXGBE_LINK_SPEED_10GB_FULL ?
849c4542
ET		 5779 "10 Gbps" :
5780 (link_speed == IXGBE_LINK_SPEED_1GB_FULL ?
5781 "1 Gbps" : "unknown speed")),
e8e26350 5782 ((flow_rx && flow_tx) ? "RX/TX" :
849c4542
ET		 5783 (flow_rx ? "RX" :
5784 (flow_tx ? "TX" : "None"))));
9a799d71
AK		 5785
5786 netif_carrier_on(netdev);
9a799d71
AK		 5787 } else {
5788 /* Force detection of hung controller */
5789 adapter->detect_tx_hung = true;
5790 }
5791 } else {
cf8280ee
JB		 5792 adapter->link_up = false;
5793 adapter->link_speed = 0;
9a799d71 5794 if (netif_carrier_ok(netdev)) {
396e799c 5795 e_info(drv, "NIC Link is Down\n");
9a799d71 5796 netif_carrier_off(netdev);
9a799d71
AK		 5797 }
5798 }
5799
bc59fcda
NS		 5800 if (!netif_carrier_ok(netdev)) {
5801 for (i = 0; i < adapter->num_tx_queues; i++) {
4a0b9ca0 5802 tx_ring = adapter->tx_ring[i];
bc59fcda
NS		 5803 if (tx_ring->next_to_use != tx_ring->next_to_clean) {
5804 some_tx_pending = 1;
5805 break;
5806 }
5807 }
5808
5809 if (some_tx_pending) {
5810 /* We've lost link, so the controller stops DMA,
5811 * but we've got queued Tx work that's never going
5812 * to get done, so reset controller to flush Tx.
5813 * (Do the reset outside of interrupt context).
5814 */
5815 schedule_work(&adapter->reset_task);
5816 }
5817 }
5818
9a799d71 5819 ixgbe_update_stats(adapter);
10eec955 5820 mutex_unlock(&ixgbe_watchdog_lock);
9a799d71
AK		 5821}
5822
9a799d71 5823static int ixgbe_tso(struct ixgbe_adapter *adapter,
e8e9f696 5824 struct ixgbe_ring *tx_ring, struct sk_buff *skb,
5e09a105 5825 u32 tx_flags, u8 *hdr_len, __be16 protocol)
9a799d71
AK		 5826{
5827 struct ixgbe_adv_tx_context_desc *context_desc;
5828 unsigned int i;
5829 int err;
5830 struct ixgbe_tx_buffer *tx_buffer_info;
9f8cdf4f
JB		 5831 u32 vlan_macip_lens = 0, type_tucmd_mlhl;
5832 u32 mss_l4len_idx, l4len;
9a799d71
AK		 5833
5834 if (skb_is_gso(skb)) {
5835 if (skb_header_cloned(skb)) {
5836 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
5837 if (err)
5838 return err;
5839 }
5840 l4len = tcp_hdrlen(skb);
5841 *hdr_len += l4len;
5842
5e09a105 5843 if (protocol == htons(ETH_P_IP)) {
9a799d71
AK		 5844 struct iphdr *iph = ip_hdr(skb);
5845 iph->tot_len = 0;
5846 iph->check = 0;
5847 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
e8e9f696
JP		 5848 iph->daddr, 0,
5849 IPPROTO_TCP,
5850 0);
8e1e8a47 5851 } else if (skb_is_gso_v6(skb)) {
9a799d71
AK		 5852 ipv6_hdr(skb)->payload_len = 0;
5853 tcp_hdr(skb)->check =
5854 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
e8e9f696
JP		 5855 &ipv6_hdr(skb)->daddr,
5856 0, IPPROTO_TCP, 0);
9a799d71
AK		 5857 }
5858
5859 i = tx_ring->next_to_use;
5860
5861 tx_buffer_info = &tx_ring->tx_buffer_info[i];
31f05a2d 5862 context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i);
9a799d71
AK		 5863
5864 /* VLAN MACLEN IPLEN */
5865 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
5866 vlan_macip_lens |=
5867 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
5868 vlan_macip_lens |= ((skb_network_offset(skb)) <<
e8e9f696 5869 IXGBE_ADVTXD_MACLEN_SHIFT);
9a799d71
AK		 5870 *hdr_len += skb_network_offset(skb);
5871 vlan_macip_lens |=
5872 (skb_transport_header(skb) - skb_network_header(skb));
5873 *hdr_len +=
5874 (skb_transport_header(skb) - skb_network_header(skb));
5875 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
5876 context_desc->seqnum_seed = 0;
5877
5878 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
9f8cdf4f 5879 type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT |
e8e9f696 5880 IXGBE_ADVTXD_DTYP_CTXT);
9a799d71 5881
5e09a105 5882 if (protocol == htons(ETH_P_IP))
9a799d71
AK		 5883 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
5884 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
5885 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
5886
5887 /* MSS L4LEN IDX */
9f8cdf4f 5888 mss_l4len_idx =
9a799d71
AK		 5889 (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT);
5890 mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT);
4eeae6fd
PW		 5891 /* use index 1 for TSO */
5892 mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
9a799d71
AK		 5893 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
5894
5895 tx_buffer_info->time_stamp = jiffies;
5896 tx_buffer_info->next_to_watch = i;
5897
5898 i++;
5899 if (i == tx_ring->count)
5900 i = 0;
5901 tx_ring->next_to_use = i;
5902
5903 return true;
5904 }
5905 return false;
5906}
5907
5e09a105
HZ		 5908static u32 ixgbe_psum(struct ixgbe_adapter *adapter, struct sk_buff *skb,
5909 __be16 protocol)
7ca647bd
JP		 5910{
5911 u32 rtn = 0;
7ca647bd
JP		 5912
5913 switch (protocol) {
5914 case cpu_to_be16(ETH_P_IP):
5915 rtn |= IXGBE_ADVTXD_TUCMD_IPV4;
5916 switch (ip_hdr(skb)->protocol) {
5917 case IPPROTO_TCP:
5918 rtn |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
5919 break;
5920 case IPPROTO_SCTP:
5921 rtn |= IXGBE_ADVTXD_TUCMD_L4T_SCTP;
5922 break;
5923 }
5924 break;
5925 case cpu_to_be16(ETH_P_IPV6):
5926 /* XXX what about other V6 headers?? */
5927 switch (ipv6_hdr(skb)->nexthdr) {
5928 case IPPROTO_TCP:
5929 rtn |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
5930 break;
5931 case IPPROTO_SCTP:
5932 rtn |= IXGBE_ADVTXD_TUCMD_L4T_SCTP;
5933 break;
5934 }
5935 break;
5936 default:
5937 if (unlikely(net_ratelimit()))
5938 e_warn(probe, "partial checksum but proto=%x!\n",
5e09a105 5939 protocol);
7ca647bd
JP		 5940 break;
5941 }
5942
5943 return rtn;
5944}
5945
9a799d71 5946static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter,
e8e9f696 5947 struct ixgbe_ring *tx_ring,
5e09a105
HZ		 5948 struct sk_buff *skb, u32 tx_flags,
5949 __be16 protocol)
9a799d71
AK		 5950{
5951 struct ixgbe_adv_tx_context_desc *context_desc;
5952 unsigned int i;
5953 struct ixgbe_tx_buffer *tx_buffer_info;
5954 u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0;
5955
5956 if (skb->ip_summed == CHECKSUM_PARTIAL ||
5957 (tx_flags & IXGBE_TX_FLAGS_VLAN)) {
5958 i = tx_ring->next_to_use;
5959 tx_buffer_info = &tx_ring->tx_buffer_info[i];
31f05a2d 5960 context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i);
9a799d71
AK		 5961
5962 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
5963 vlan_macip_lens |=
5964 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
5965 vlan_macip_lens |= (skb_network_offset(skb) <<
e8e9f696 5966 IXGBE_ADVTXD_MACLEN_SHIFT);
9a799d71
AK		 5967 if (skb->ip_summed == CHECKSUM_PARTIAL)
5968 vlan_macip_lens |= (skb_transport_header(skb) -
e8e9f696 5969 skb_network_header(skb));
9a799d71
AK		 5970
5971 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
5972 context_desc->seqnum_seed = 0;
5973
5974 type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT |
e8e9f696 5975 IXGBE_ADVTXD_DTYP_CTXT);
9a799d71 5976
7ca647bd 5977 if (skb->ip_summed == CHECKSUM_PARTIAL)
5e09a105 5978 type_tucmd_mlhl |= ixgbe_psum(adapter, skb, protocol);
9a799d71
AK		 5979
5980 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
4eeae6fd 5981 /* use index zero for tx checksum offload */
9a799d71
AK		 5982 context_desc->mss_l4len_idx = 0;
5983
5984 tx_buffer_info->time_stamp = jiffies;
5985 tx_buffer_info->next_to_watch = i;
9f8cdf4f 5986
9a799d71
AK		 5987 i++;
5988 if (i == tx_ring->count)
5989 i = 0;
5990 tx_ring->next_to_use = i;
5991
5992 return true;
5993 }
9f8cdf4f 5994
9a799d71
AK		 5995 return false;
5996}
5997
5998static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
e8e9f696
JP		 5999 struct ixgbe_ring *tx_ring,
6000 struct sk_buff *skb, u32 tx_flags,
8ad494b0 6001 unsigned int first, const u8 hdr_len)
9a799d71 6002{
b6ec895e 6003 struct device *dev = tx_ring->dev;
9a799d71 6004 struct ixgbe_tx_buffer *tx_buffer_info;
eacd73f7
YZ		 6005 unsigned int len;
6006 unsigned int total = skb->len;
9a799d71
AK		 6007 unsigned int offset = 0, size, count = 0, i;
6008 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
6009 unsigned int f;
8ad494b0
AD		 6010 unsigned int bytecount = skb->len;
6011 u16 gso_segs = 1;
9a799d71
AK		 6012
6013 i = tx_ring->next_to_use;
6014
eacd73f7
YZ		 6015 if (tx_flags & IXGBE_TX_FLAGS_FCOE)
6016 /* excluding fcoe_crc_eof for FCoE */
6017 total -= sizeof(struct fcoe_crc_eof);
6018
6019 len = min(skb_headlen(skb), total);
9a799d71
AK		 6020 while (len) {
6021 tx_buffer_info = &tx_ring->tx_buffer_info[i];
6022 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
6023
6024 tx_buffer_info->length = size;
e5a43549 6025 tx_buffer_info->mapped_as_page = false;
b6ec895e 6026 tx_buffer_info->dma = dma_map_single(dev,
e5a43549 6027 skb->data + offset,
1b507730 6028 size, DMA_TO_DEVICE);
b6ec895e 6029 if (dma_mapping_error(dev, tx_buffer_info->dma))
e5a43549 6030 goto dma_error;
9a799d71
AK		 6031 tx_buffer_info->time_stamp = jiffies;
6032 tx_buffer_info->next_to_watch = i;
6033
6034 len -= size;
eacd73f7 6035 total -= size;
9a799d71
AK		 6036 offset += size;
6037 count++;
44df32c5
AD		 6038
6039 if (len) {
6040 i++;
6041 if (i == tx_ring->count)
6042 i = 0;
6043 }
9a799d71
AK		 6044 }
6045
6046 for (f = 0; f < nr_frags; f++) {
6047 struct skb_frag_struct *frag;
6048
6049 frag = &skb_shinfo(skb)->frags[f];
eacd73f7 6050 len = min((unsigned int)frag->size, total);
e5a43549 6051 offset = frag->page_offset;
9a799d71
AK		 6052
6053 while (len) {
44df32c5
AD		 6054 i++;
6055 if (i == tx_ring->count)
6056 i = 0;
6057
9a799d71
AK		 6058 tx_buffer_info = &tx_ring->tx_buffer_info[i];
6059 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
6060
6061 tx_buffer_info->length = size;
b6ec895e 6062 tx_buffer_info->dma = dma_map_page(dev,
e5a43549
AD		 6063 frag->page,
6064 offset, size,
1b507730 6065 DMA_TO_DEVICE);
e5a43549 6066 tx_buffer_info->mapped_as_page = true;
b6ec895e 6067 if (dma_mapping_error(dev, tx_buffer_info->dma))
e5a43549 6068 goto dma_error;
9a799d71
AK		 6069 tx_buffer_info->time_stamp = jiffies;
6070 tx_buffer_info->next_to_watch = i;
6071
6072 len -= size;
eacd73f7 6073 total -= size;
9a799d71
AK		 6074 offset += size;
6075 count++;
9a799d71 6076 }
eacd73f7
YZ		 6077 if (total == 0)
6078 break;
9a799d71 6079 }
44df32c5 6080
8ad494b0
AD		 6081 if (tx_flags & IXGBE_TX_FLAGS_TSO)
6082 gso_segs = skb_shinfo(skb)->gso_segs;
6083#ifdef IXGBE_FCOE
6084 /* adjust for FCoE Sequence Offload */
6085 else if (tx_flags & IXGBE_TX_FLAGS_FSO)
6086 gso_segs = DIV_ROUND_UP(skb->len - hdr_len,
6087 skb_shinfo(skb)->gso_size);
6088#endif /* IXGBE_FCOE */
6089 bytecount += (gso_segs - 1) * hdr_len;
6090
6091 /* multiply data chunks by size of headers */
6092 tx_ring->tx_buffer_info[i].bytecount = bytecount;
6093 tx_ring->tx_buffer_info[i].gso_segs = gso_segs;
9a799d71
AK		 6094 tx_ring->tx_buffer_info[i].skb = skb;
6095 tx_ring->tx_buffer_info[first].next_to_watch = i;
6096
e5a43549
AD		 6097 return count;
6098
6099dma_error:
849c4542 6100 e_dev_err("TX DMA map failed\n");
e5a43549
AD		 6101
6102 /* clear timestamp and dma mappings for failed tx_buffer_info map */
6103 tx_buffer_info->dma = 0;
6104 tx_buffer_info->time_stamp = 0;
6105 tx_buffer_info->next_to_watch = 0;
c1fa347f
RK		 6106 if (count)
6107 count--;
e5a43549
AD		 6108
6109 /* clear timestamp and dma mappings for remaining portion of packet */
c1fa347f 6110 while (count--) {
e8e9f696 6111 if (i == 0)
e5a43549 6112 i += tx_ring->count;
c1fa347f 6113 i--;
e5a43549 6114 tx_buffer_info = &tx_ring->tx_buffer_info[i];
b6ec895e 6115 ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer_info);
e5a43549
AD		 6116 }
6117
e44d38e1 6118 return 0;
9a799d71
AK		 6119}
6120
84ea2591 6121static void ixgbe_tx_queue(struct ixgbe_ring *tx_ring,
e8e9f696 6122 int tx_flags, int count, u32 paylen, u8 hdr_len)
9a799d71
AK		 6123{
6124 union ixgbe_adv_tx_desc *tx_desc = NULL;
6125 struct ixgbe_tx_buffer *tx_buffer_info;
6126 u32 olinfo_status = 0, cmd_type_len = 0;
6127 unsigned int i;
6128 u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS;
6129
6130 cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA;
6131
6132 cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
6133
6134 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
6135 cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE;
6136
6137 if (tx_flags & IXGBE_TX_FLAGS_TSO) {
6138 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
6139
6140 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
e8e9f696 6141 IXGBE_ADVTXD_POPTS_SHIFT;
9a799d71 6142
4eeae6fd
PW		 6143 /* use index 1 context for tso */
6144 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
9a799d71
AK		 6145 if (tx_flags & IXGBE_TX_FLAGS_IPV4)
6146 olinfo_status |= IXGBE_TXD_POPTS_IXSM <<
e8e9f696 6147 IXGBE_ADVTXD_POPTS_SHIFT;
9a799d71
AK		 6148
6149 } else if (tx_flags & IXGBE_TX_FLAGS_CSUM)
6150 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
e8e9f696 6151 IXGBE_ADVTXD_POPTS_SHIFT;
9a799d71 6152
eacd73f7
YZ		 6153 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
6154 olinfo_status |= IXGBE_ADVTXD_CC;
6155 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
6156 if (tx_flags & IXGBE_TX_FLAGS_FSO)
6157 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
6158 }
6159
9a799d71
AK		 6160 olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
6161
6162 i = tx_ring->next_to_use;
6163 while (count--) {
6164 tx_buffer_info = &tx_ring->tx_buffer_info[i];
31f05a2d 6165 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
9a799d71
AK		 6166 tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma);
6167 tx_desc->read.cmd_type_len =
e8e9f696 6168 cpu_to_le32(cmd_type_len | tx_buffer_info->length);
9a799d71 6169 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
9a799d71
AK		 6170 i++;
6171 if (i == tx_ring->count)
6172 i = 0;
6173 }
6174
6175 tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd);
6176
6177 /*
6178 * Force memory writes to complete before letting h/w
6179 * know there are new descriptors to fetch. (Only
6180 * applicable for weak-ordered memory model archs,
6181 * such as IA-64).
6182 */
6183 wmb();
6184
6185 tx_ring->next_to_use = i;
84ea2591 6186 writel(i, tx_ring->tail);
9a799d71
AK		 6187}
6188
c4cf55e5 6189static void ixgbe_atr(struct ixgbe_adapter *adapter, struct sk_buff *skb,
5e09a105 6190 int queue, u32 tx_flags, __be16 protocol)
c4cf55e5 6191{
c4cf55e5
PWJ		 6192 struct ixgbe_atr_input atr_input;
6193 struct tcphdr *th;
c4cf55e5
PWJ		 6194 struct iphdr *iph = ip_hdr(skb);
6195 struct ethhdr *eth = (struct ethhdr *)skb->data;
6196 u16 vlan_id, src_port, dst_port, flex_bytes;
6197 u32 src_ipv4_addr, dst_ipv4_addr;
6198 u8 l4type = 0;
6199
d3ead241 6200 /* Right now, we support IPv4 only */
5e09a105 6201 if (protocol != htons(ETH_P_IP))
d3ead241 6202 return;
c4cf55e5
PWJ		 6203 /* check if we're UDP or TCP */
6204 if (iph->protocol == IPPROTO_TCP) {
6205 th = tcp_hdr(skb);
6206 src_port = th->source;
6207 dst_port = th->dest;
6208 l4type |= IXGBE_ATR_L4TYPE_TCP;
6209 /* l4type IPv4 type is 0, no need to assign */
c4cf55e5
PWJ		 6210 } else {
6211 /* Unsupported L4 header, just bail here */
6212 return;
6213 }
6214
6215 memset(&atr_input, 0, sizeof(struct ixgbe_atr_input));
6216
6217 vlan_id = (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK) >>
e8e9f696 6218 IXGBE_TX_FLAGS_VLAN_SHIFT;
c4cf55e5
PWJ		 6219 src_ipv4_addr = iph->saddr;
6220 dst_ipv4_addr = iph->daddr;
6221 flex_bytes = eth->h_proto;
6222
6223 ixgbe_atr_set_vlan_id_82599(&atr_input, vlan_id);
6224 ixgbe_atr_set_src_port_82599(&atr_input, dst_port);
6225 ixgbe_atr_set_dst_port_82599(&atr_input, src_port);
6226 ixgbe_atr_set_flex_byte_82599(&atr_input, flex_bytes);
6227 ixgbe_atr_set_l4type_82599(&atr_input, l4type);
6228 /* src and dst are inverted, think how the receiver sees them */
6229 ixgbe_atr_set_src_ipv4_82599(&atr_input, dst_ipv4_addr);
6230 ixgbe_atr_set_dst_ipv4_82599(&atr_input, src_ipv4_addr);
6231
6232 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
6233 ixgbe_fdir_add_signature_filter_82599(&adapter->hw, &atr_input, queue);
6234}
6235
fc77dc3c 6236static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, int size)
e092be60 6237{
fc77dc3c 6238 netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index);
e092be60
AV		 6239 /* Herbert's original patch had:
6240 * smp_mb__after_netif_stop_queue();
6241 * but since that doesn't exist yet, just open code it. */
6242 smp_mb();
6243
6244 /* We need to check again in a case another CPU has just
6245 * made room available. */
6246 if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
6247 return -EBUSY;
6248
6249 /* A reprieve! - use start_queue because it doesn't call schedule */
fc77dc3c 6250 netif_start_subqueue(tx_ring->netdev, tx_ring->queue_index);
5b7da515 6251 ++tx_ring->tx_stats.restart_queue;
e092be60
AV		 6252 return 0;
6253}
6254
fc77dc3c 6255static int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, int size)
e092be60
AV		 6256{
6257 if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
6258 return 0;
fc77dc3c 6259 return __ixgbe_maybe_stop_tx(tx_ring, size);
e092be60
AV		 6260}
6261
09a3b1f8
SH		 6262static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb)
6263{
6264 struct ixgbe_adapter *adapter = netdev_priv(dev);
5f715823 6265 int txq = smp_processor_id();
56075a98 6266#ifdef IXGBE_FCOE
5e09a105
HZ		 6267 __be16 protocol;
6268
6269 protocol = vlan_get_protocol(skb);
6270
6271 if ((protocol == htons(ETH_P_FCOE)) ||
6272 (protocol == htons(ETH_P_FIP))) {
56075a98
JF		 6273 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
6274 txq &= (adapter->ring_feature[RING_F_FCOE].indices - 1);
6275 txq += adapter->ring_feature[RING_F_FCOE].mask;
6276 return txq;
4bc091d8 6277#ifdef CONFIG_IXGBE_DCB
56075a98
JF		 6278 } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6279 txq = adapter->fcoe.up;
6280 return txq;
4bc091d8 6281#endif
56075a98
JF		 6282 }
6283 }
6284#endif
6285
fdd3d631
KK		 6286 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
6287 while (unlikely(txq >= dev->real_num_tx_queues))
6288 txq -= dev->real_num_tx_queues;
5f715823 6289 return txq;
fdd3d631 6290 }
c4cf55e5 6291
2ea186ae
JF		 6292 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6293 if (skb->priority == TC_PRIO_CONTROL)
6294 txq = adapter->ring_feature[RING_F_DCB].indices-1;
6295 else
6296 txq = (skb->vlan_tci & IXGBE_TX_FLAGS_VLAN_PRIO_MASK)
6297 >> 13;
6298 return txq;
6299 }
09a3b1f8
SH		 6300
6301 return skb_tx_hash(dev, skb);
6302}
6303
fc77dc3c 6304netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
84418e3b
AD		 6305 struct ixgbe_adapter *adapter,
6306 struct ixgbe_ring *tx_ring)
9a799d71 6307{
fc77dc3c 6308 struct net_device *netdev = tx_ring->netdev;
60d51134 6309 struct netdev_queue *txq;
9a799d71
AK		 6310 unsigned int first;
6311 unsigned int tx_flags = 0;
30eba97a 6312 u8 hdr_len = 0;
5f715823 6313 int tso;
9a799d71
AK		 6314 int count = 0;
6315 unsigned int f;
5e09a105
HZ		 6316 __be16 protocol;
6317
6318 protocol = vlan_get_protocol(skb);
9f8cdf4f 6319
eab6d18d 6320 if (vlan_tx_tag_present(skb)) {
9f8cdf4f 6321 tx_flags |= vlan_tx_tag_get(skb);
2f90b865
AD		 6322 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6323 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
5f715823 6324 tx_flags |= ((skb->queue_mapping & 0x7) << 13);
2f90b865
AD		 6325 }
6326 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
6327 tx_flags |= IXGBE_TX_FLAGS_VLAN;
33c66bd1
JF		 6328 } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED &&
6329 skb->priority != TC_PRIO_CONTROL) {
2ea186ae
JF		 6330 tx_flags |= ((skb->queue_mapping & 0x7) << 13);
6331 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
6332 tx_flags |= IXGBE_TX_FLAGS_VLAN;
9a799d71 6333 }
eacd73f7 6334
09ad1cc0 6335#ifdef IXGBE_FCOE
56075a98
JF		 6336 /* for FCoE with DCB, we force the priority to what
6337 * was specified by the switch */
6338 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED &&
5e09a105
HZ		 6339 (protocol == htons(ETH_P_FCOE) ||
6340 protocol == htons(ETH_P_FIP))) {
4bc091d8
JF		 6341#ifdef CONFIG_IXGBE_DCB
6342 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6343 tx_flags &= ~(IXGBE_TX_FLAGS_VLAN_PRIO_MASK
6344 << IXGBE_TX_FLAGS_VLAN_SHIFT);
6345 tx_flags |= ((adapter->fcoe.up << 13)
6346 << IXGBE_TX_FLAGS_VLAN_SHIFT);
6347 }
6348#endif
ca77cd59 6349 /* flag for FCoE offloads */
5e09a105 6350 if (protocol == htons(ETH_P_FCOE))
ca77cd59 6351 tx_flags |= IXGBE_TX_FLAGS_FCOE;
09ad1cc0 6352 }
ca77cd59
RL		 6353#endif
6354
eacd73f7 6355 /* four things can cause us to need a context descriptor */
9f8cdf4f
JB		 6356 if (skb_is_gso(skb) ||
6357 (skb->ip_summed == CHECKSUM_PARTIAL) ||
eacd73f7
YZ		 6358 (tx_flags & IXGBE_TX_FLAGS_VLAN) ||
6359 (tx_flags & IXGBE_TX_FLAGS_FCOE))
9a799d71
AK		 6360 count++;
6361
9f8cdf4f
JB		 6362 count += TXD_USE_COUNT(skb_headlen(skb));
6363 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
9a799d71
AK		 6364 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
6365
fc77dc3c 6366 if (ixgbe_maybe_stop_tx(tx_ring, count)) {
5b7da515 6367 tx_ring->tx_stats.tx_busy++;
9a799d71
AK		 6368 return NETDEV_TX_BUSY;
6369 }
9a799d71 6370
9a799d71 6371 first = tx_ring->next_to_use;
eacd73f7
YZ		 6372 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
6373#ifdef IXGBE_FCOE
6374 /* setup tx offload for FCoE */
6375 tso = ixgbe_fso(adapter, tx_ring, skb, tx_flags, &hdr_len);
6376 if (tso < 0) {
6377 dev_kfree_skb_any(skb);
6378 return NETDEV_TX_OK;
6379 }
6380 if (tso)
6381 tx_flags |= IXGBE_TX_FLAGS_FSO;
6382#endif /* IXGBE_FCOE */
6383 } else {
5e09a105 6384 if (protocol == htons(ETH_P_IP))
eacd73f7 6385 tx_flags |= IXGBE_TX_FLAGS_IPV4;
5e09a105
HZ		 6386 tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len,
6387 protocol);
eacd73f7
YZ		 6388 if (tso < 0) {
6389 dev_kfree_skb_any(skb);
6390 return NETDEV_TX_OK;
6391 }
9a799d71 6392
eacd73f7
YZ		 6393 if (tso)
6394 tx_flags |= IXGBE_TX_FLAGS_TSO;
5e09a105
HZ		 6395 else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags,
6396 protocol) &&
eacd73f7
YZ		 6397 (skb->ip_summed == CHECKSUM_PARTIAL))
6398 tx_flags |= IXGBE_TX_FLAGS_CSUM;
6399 }
9a799d71 6400
8ad494b0 6401 count = ixgbe_tx_map(adapter, tx_ring, skb, tx_flags, first, hdr_len);
44df32c5 6402 if (count) {
c4cf55e5
PWJ		 6403 /* add the ATR filter if ATR is on */
6404 if (tx_ring->atr_sample_rate) {
6405 ++tx_ring->atr_count;
6406 if ((tx_ring->atr_count >= tx_ring->atr_sample_rate) &&
e8e9f696
JP		 6407 test_bit(__IXGBE_FDIR_INIT_DONE,
6408 &tx_ring->reinit_state)) {
c4cf55e5 6409 ixgbe_atr(adapter, skb, tx_ring->queue_index,
5e09a105 6410 tx_flags, protocol);
c4cf55e5
PWJ		 6411 tx_ring->atr_count = 0;
6412 }
6413 }
60d51134
ED		 6414 txq = netdev_get_tx_queue(netdev, tx_ring->queue_index);
6415 txq->tx_bytes += skb->len;
6416 txq->tx_packets++;
84ea2591 6417 ixgbe_tx_queue(tx_ring, tx_flags, count, skb->len, hdr_len);
fc77dc3c 6418 ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED);
9a799d71 6419
44df32c5
AD		 6420 } else {
6421 dev_kfree_skb_any(skb);
6422 tx_ring->tx_buffer_info[first].time_stamp = 0;
6423 tx_ring->next_to_use = first;
6424 }
9a799d71
AK		 6425
6426 return NETDEV_TX_OK;
6427}
6428
84418e3b
AD		 6429static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
6430{
6431 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6432 struct ixgbe_ring *tx_ring;
6433
6434 tx_ring = adapter->tx_ring[skb->queue_mapping];
fc77dc3c 6435 return ixgbe_xmit_frame_ring(skb, adapter, tx_ring);
84418e3b
AD		 6436}
6437
9a799d71
AK		 6438/**
6439 * ixgbe_set_mac - Change the Ethernet Address of the NIC
6440 * @netdev: network interface device structure
6441 * @p: pointer to an address structure
6442 *
6443 * Returns 0 on success, negative on failure
6444 **/
6445static int ixgbe_set_mac(struct net_device *netdev, void *p)
6446{
6447 struct ixgbe_adapter *adapter = netdev_priv(netdev);
b4617240 6448 struct ixgbe_hw *hw = &adapter->hw;
9a799d71
AK		 6449 struct sockaddr *addr = p;
6450
6451 if (!is_valid_ether_addr(addr->sa_data))
6452 return -EADDRNOTAVAIL;
6453
6454 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
b4617240 6455 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
9a799d71 6456
1cdd1ec8
GR		 6457 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
6458 IXGBE_RAH_AV);
9a799d71
AK		 6459
6460 return 0;
6461}
6462
6b73e10d
BH		 6463static int
6464ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr)
6465{
6466 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6467 struct ixgbe_hw *hw = &adapter->hw;
6468 u16 value;
6469 int rc;
6470
6471 if (prtad != hw->phy.mdio.prtad)
6472 return -EINVAL;
6473 rc = hw->phy.ops.read_reg(hw, addr, devad, &value);
6474 if (!rc)
6475 rc = value;
6476 return rc;
6477}
6478
6479static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad,
6480 u16 addr, u16 value)
6481{
6482 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6483 struct ixgbe_hw *hw = &adapter->hw;
6484
6485 if (prtad != hw->phy.mdio.prtad)
6486 return -EINVAL;
6487 return hw->phy.ops.write_reg(hw, addr, devad, value);
6488}
6489
6490static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
6491{
6492 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6493
6494 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd);
6495}
6496
0365e6e4
PW		 6497/**
6498 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
31278e71 6499 * netdev->dev_addrs
0365e6e4
PW		 6500 * @netdev: network interface device structure
6501 *
6502 * Returns non-zero on failure
6503 **/
6504static int ixgbe_add_sanmac_netdev(struct net_device *dev)
6505{
6506 int err = 0;
6507 struct ixgbe_adapter *adapter = netdev_priv(dev);
6508 struct ixgbe_mac_info *mac = &adapter->hw.mac;
6509
6510 if (is_valid_ether_addr(mac->san_addr)) {
6511 rtnl_lock();
6512 err = dev_addr_add(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
6513 rtnl_unlock();
6514 }
6515 return err;
6516}
6517
6518/**
6519 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
31278e71 6520 * netdev->dev_addrs
0365e6e4
PW		 6521 * @netdev: network interface device structure
6522 *
6523 * Returns non-zero on failure
6524 **/
6525static int ixgbe_del_sanmac_netdev(struct net_device *dev)
6526{
6527 int err = 0;
6528 struct ixgbe_adapter *adapter = netdev_priv(dev);
6529 struct ixgbe_mac_info *mac = &adapter->hw.mac;
6530
6531 if (is_valid_ether_addr(mac->san_addr)) {
6532 rtnl_lock();
6533 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
6534 rtnl_unlock();
6535 }
6536 return err;
6537}
6538
9a799d71
AK		 6539#ifdef CONFIG_NET_POLL_CONTROLLER
6540/*
6541 * Polling 'interrupt' - used by things like netconsole to send skbs
6542 * without having to re-enable interrupts. It's not called while
6543 * the interrupt routine is executing.
6544 */
6545static void ixgbe_netpoll(struct net_device *netdev)
6546{
6547 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8f9a7167 6548 int i;
9a799d71 6549
1a647bd2
AD		 6550 /* if interface is down do nothing */
6551 if (test_bit(__IXGBE_DOWN, &adapter->state))
6552 return;
6553
9a799d71 6554 adapter->flags |= IXGBE_FLAG_IN_NETPOLL;
8f9a7167
PWJ		 6555 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
6556 int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
6557 for (i = 0; i < num_q_vectors; i++) {
6558 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
6559 ixgbe_msix_clean_many(0, q_vector);
6560 }
6561 } else {
6562 ixgbe_intr(adapter->pdev->irq, netdev);
6563 }
9a799d71 6564 adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL;
9a799d71
AK		 6565}
6566#endif
6567
de1036b1
ED		 6568static struct rtnl_link_stats64 *ixgbe_get_stats64(struct net_device *netdev,
6569 struct rtnl_link_stats64 *stats)
6570{
6571 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6572 int i;
6573
6574 /* accurate rx/tx bytes/packets stats */
6575 dev_txq_stats_fold(netdev, stats);
1a51502b 6576 rcu_read_lock();
de1036b1 6577 for (i = 0; i < adapter->num_rx_queues; i++) {
1a51502b 6578 struct ixgbe_ring *ring = ACCESS_ONCE(adapter->rx_ring[i]);
de1036b1
ED		 6579 u64 bytes, packets;
6580 unsigned int start;
6581
1a51502b
ED		 6582 if (ring) {
6583 do {
6584 start = u64_stats_fetch_begin_bh(&ring->syncp);
6585 packets = ring->stats.packets;
6586 bytes = ring->stats.bytes;
6587 } while (u64_stats_fetch_retry_bh(&ring->syncp, start));
6588 stats->rx_packets += packets;
6589 stats->rx_bytes += bytes;
6590 }
de1036b1 6591 }
1a51502b 6592 rcu_read_unlock();
de1036b1
ED		 6593 /* following stats updated by ixgbe_watchdog_task() */
6594 stats->multicast = netdev->stats.multicast;
6595 stats->rx_errors = netdev->stats.rx_errors;
6596 stats->rx_length_errors = netdev->stats.rx_length_errors;
6597 stats->rx_crc_errors = netdev->stats.rx_crc_errors;
6598 stats->rx_missed_errors = netdev->stats.rx_missed_errors;
6599 return stats;
6600}
6601
6602
0edc3527 6603static const struct net_device_ops ixgbe_netdev_ops = {
e8e9f696 6604 .ndo_open = ixgbe_open,
0edc3527 6605 .ndo_stop = ixgbe_close,
00829823 6606 .ndo_start_xmit = ixgbe_xmit_frame,
09a3b1f8 6607 .ndo_select_queue = ixgbe_select_queue,
e90d400c 6608 .ndo_set_rx_mode = ixgbe_set_rx_mode,
0edc3527
SH		 6609 .ndo_set_multicast_list = ixgbe_set_rx_mode,
6610 .ndo_validate_addr = eth_validate_addr,
6611 .ndo_set_mac_address = ixgbe_set_mac,
6612 .ndo_change_mtu = ixgbe_change_mtu,
6613 .ndo_tx_timeout = ixgbe_tx_timeout,
0edc3527
SH		 6614 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
6615 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
6b73e10d 6616 .ndo_do_ioctl = ixgbe_ioctl,
7f01648a
GR		 6617 .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac,
6618 .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan,
6619 .ndo_set_vf_tx_rate = ixgbe_ndo_set_vf_bw,
6620 .ndo_get_vf_config = ixgbe_ndo_get_vf_config,
de1036b1 6621 .ndo_get_stats64 = ixgbe_get_stats64,
0edc3527
SH		 6622#ifdef CONFIG_NET_POLL_CONTROLLER
6623 .ndo_poll_controller = ixgbe_netpoll,
6624#endif
332d4a7d
YZ		 6625#ifdef IXGBE_FCOE
6626 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get,
6627 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put,
8450ff8c
YZ		 6628 .ndo_fcoe_enable = ixgbe_fcoe_enable,
6629 .ndo_fcoe_disable = ixgbe_fcoe_disable,
61a1fa10 6630 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn,
332d4a7d 6631#endif /* IXGBE_FCOE */
0edc3527
SH		 6632};
6633
1cdd1ec8
GR		 6634static void __devinit ixgbe_probe_vf(struct ixgbe_adapter *adapter,
6635 const struct ixgbe_info *ii)
6636{
6637#ifdef CONFIG_PCI_IOV
6638 struct ixgbe_hw *hw = &adapter->hw;
6639 int err;
6640
6641 if (hw->mac.type != ixgbe_mac_82599EB || !max_vfs)
6642 return;
6643
6644 /* The 82599 supports up to 64 VFs per physical function
6645 * but this implementation limits allocation to 63 so that
6646 * basic networking resources are still available to the
6647 * physical function
6648 */
6649 adapter->num_vfs = (max_vfs > 63) ? 63 : max_vfs;
6650 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
6651 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
6652 if (err) {
396e799c 6653 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
1cdd1ec8
GR		 6654 goto err_novfs;
6655 }
6656 /* If call to enable VFs succeeded then allocate memory
6657 * for per VF control structures.
6658 */
6659 adapter->vfinfo =
6660 kcalloc(adapter->num_vfs,
6661 sizeof(struct vf_data_storage), GFP_KERNEL);
6662 if (adapter->vfinfo) {
6663 /* Now that we're sure SR-IOV is enabled
6664 * and memory allocated set up the mailbox parameters
6665 */
6666 ixgbe_init_mbx_params_pf(hw);
6667 memcpy(&hw->mbx.ops, ii->mbx_ops,
6668 sizeof(hw->mbx.ops));
6669
6670 /* Disable RSC when in SR-IOV mode */
6671 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
6672 IXGBE_FLAG2_RSC_ENABLED);
6673 return;
6674 }
6675
6676 /* Oh oh */
396e799c
ET		 6677 e_err(probe, "Unable to allocate memory for VF Data Storage - "
6678 "SRIOV disabled\n");
1cdd1ec8
GR		 6679 pci_disable_sriov(adapter->pdev);
6680
6681err_novfs:
6682 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
6683 adapter->num_vfs = 0;
6684#endif /* CONFIG_PCI_IOV */
6685}
6686
9a799d71
AK		 6687/**
6688 * ixgbe_probe - Device Initialization Routine
6689 * @pdev: PCI device information struct
6690 * @ent: entry in ixgbe_pci_tbl
6691 *
6692 * Returns 0 on success, negative on failure
6693 *
6694 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
6695 * The OS initialization, configuring of the adapter private structure,
6696 * and a hardware reset occur.
6697 **/
6698static int __devinit ixgbe_probe(struct pci_dev *pdev,
e8e9f696 6699 const struct pci_device_id *ent)
9a799d71
AK		 6700{
6701 struct net_device *netdev;
6702 struct ixgbe_adapter *adapter = NULL;
6703 struct ixgbe_hw *hw;
6704 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
9a799d71
AK		 6705 static int cards_found;
6706 int i, err, pci_using_dac;
c85a2618 6707 unsigned int indices = num_possible_cpus();
eacd73f7
YZ		 6708#ifdef IXGBE_FCOE
6709 u16 device_caps;
6710#endif
c44ade9e 6711 u32 part_num, eec;
9a799d71 6712
bded64a7
AG		 6713 /* Catch broken hardware that put the wrong VF device ID in
6714 * the PCIe SR-IOV capability.
6715 */
6716 if (pdev->is_virtfn) {
6717 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
6718 pci_name(pdev), pdev->vendor, pdev->device);
6719 return -EINVAL;
6720 }
6721
9ce77666 6722 err = pci_enable_device_mem(pdev);
9a799d71
AK		 6723 if (err)
6724 return err;
6725
1b507730
NN		 6726 if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
6727 !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
9a799d71
AK		 6728 pci_using_dac = 1;
6729 } else {
1b507730 6730 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
9a799d71 6731 if (err) {
1b507730
NN		 6732 err = dma_set_coherent_mask(&pdev->dev,
6733 DMA_BIT_MASK(32));
9a799d71 6734 if (err) {
b8bc0421
DC		 6735 dev_err(&pdev->dev,
6736 "No usable DMA configuration, aborting\n");
9a799d71
AK		 6737 goto err_dma;
6738 }
6739 }
6740 pci_using_dac = 0;
6741 }
6742
9ce77666 6743 err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
e8e9f696 6744 IORESOURCE_MEM), ixgbe_driver_name);
9a799d71 6745 if (err) {
b8bc0421
DC		 6746 dev_err(&pdev->dev,
6747 "pci_request_selected_regions failed 0x%x\n", err);
9a799d71
AK		 6748 goto err_pci_reg;
6749 }
6750
19d5afd4 6751 pci_enable_pcie_error_reporting(pdev);
6fabd715 6752
9a799d71 6753 pci_set_master(pdev);
fb3b27bc 6754 pci_save_state(pdev);
9a799d71 6755
c85a2618
JF		 6756 if (ii->mac == ixgbe_mac_82598EB)
6757 indices = min_t(unsigned int, indices, IXGBE_MAX_RSS_INDICES);
6758 else
6759 indices = min_t(unsigned int, indices, IXGBE_MAX_FDIR_INDICES);
6760
6761 indices = max_t(unsigned int, indices, IXGBE_MAX_DCB_INDICES);
6762#ifdef IXGBE_FCOE
6763 indices += min_t(unsigned int, num_possible_cpus(),
6764 IXGBE_MAX_FCOE_INDICES);
6765#endif
c85a2618 6766 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices);
9a799d71
AK		 6767 if (!netdev) {
6768 err = -ENOMEM;
6769 goto err_alloc_etherdev;
6770 }
6771
9a799d71
AK		 6772 SET_NETDEV_DEV(netdev, &pdev->dev);
6773
6774 pci_set_drvdata(pdev, netdev);
6775 adapter = netdev_priv(netdev);
6776
6777 adapter->netdev = netdev;
6778 adapter->pdev = pdev;
6779 hw = &adapter->hw;
6780 hw->back = adapter;
6781 adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
6782
05857980 6783 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
e8e9f696 6784 pci_resource_len(pdev, 0));
9a799d71
AK		 6785 if (!hw->hw_addr) {
6786 err = -EIO;
6787 goto err_ioremap;
6788 }
6789
6790 for (i = 1; i <= 5; i++) {
6791 if (pci_resource_len(pdev, i) == 0)
6792 continue;
6793 }
6794
0edc3527 6795 netdev->netdev_ops = &ixgbe_netdev_ops;
9a799d71 6796 ixgbe_set_ethtool_ops(netdev);
9a799d71 6797 netdev->watchdog_timeo = 5 * HZ;
9a799d71
AK		 6798 strcpy(netdev->name, pci_name(pdev));
6799
9a799d71
AK		 6800 adapter->bd_number = cards_found;
6801
9a799d71
AK		 6802 /* Setup hw api */
6803 memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
021230d4 6804 hw->mac.type = ii->mac;
9a799d71 6805
c44ade9e
JB		 6806 /* EEPROM */
6807 memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops));
6808 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
6809 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
6810 if (!(eec & (1 << 8)))
6811 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
6812
6813 /* PHY */
6814 memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops));
c4900be0 6815 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
6b73e10d
BH		 6816 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
6817 hw->phy.mdio.prtad = MDIO_PRTAD_NONE;
6818 hw->phy.mdio.mmds = 0;
6819 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
6820 hw->phy.mdio.dev = netdev;
6821 hw->phy.mdio.mdio_read = ixgbe_mdio_read;
6822 hw->phy.mdio.mdio_write = ixgbe_mdio_write;
c4900be0
DS		 6823
6824 /* set up this timer and work struct before calling get_invariants
6825 * which might start the timer
6826 */
6827 init_timer(&adapter->sfp_timer);
c061b18d 6828 adapter->sfp_timer.function = ixgbe_sfp_timer;
c4900be0
DS		 6829 adapter->sfp_timer.data = (unsigned long) adapter;
6830
6831 INIT_WORK(&adapter->sfp_task, ixgbe_sfp_task);
c44ade9e 6832
e8e26350
PW		 6833 /* multispeed fiber has its own tasklet, called from GPI SDP1 context */
6834 INIT_WORK(&adapter->multispeed_fiber_task, ixgbe_multispeed_fiber_task);
6835
6836 /* a new SFP+ module arrival, called from GPI SDP2 context */
6837 INIT_WORK(&adapter->sfp_config_module_task,
e8e9f696 6838 ixgbe_sfp_config_module_task);
e8e26350 6839
8ca783ab 6840 ii->get_invariants(hw);
9a799d71
AK		 6841
6842 /* setup the private structure */
6843 err = ixgbe_sw_init(adapter);
6844 if (err)
6845 goto err_sw_init;
6846
e86bff0e
DS		 6847 /* Make it possible the adapter to be woken up via WOL */
6848 if (adapter->hw.mac.type == ixgbe_mac_82599EB)
6849 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
6850
bf069c97
DS		 6851 /*
6852 * If there is a fan on this device and it has failed log the
6853 * failure.
6854 */
6855 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
6856 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
6857 if (esdp & IXGBE_ESDP_SDP1)
396e799c 6858 e_crit(probe, "Fan has stopped, replace the adapter\n");
bf069c97
DS		 6859 }
6860
c44ade9e 6861 /* reset_hw fills in the perm_addr as well */
119fc60a 6862 hw->phy.reset_if_overtemp = true;
c44ade9e 6863 err = hw->mac.ops.reset_hw(hw);
119fc60a 6864 hw->phy.reset_if_overtemp = false;
8ca783ab
DS		 6865 if (err == IXGBE_ERR_SFP_NOT_PRESENT &&
6866 hw->mac.type == ixgbe_mac_82598EB) {
6867 /*
6868 * Start a kernel thread to watch for a module to arrive.
6869 * Only do this for 82598, since 82599 will generate
6870 * interrupts on module arrival.
6871 */
6872 set_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
6873 mod_timer(&adapter->sfp_timer,
6874 round_jiffies(jiffies + (2 * HZ)));
6875 err = 0;
6876 } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
849c4542
ET		 6877 e_dev_err("failed to initialize because an unsupported SFP+ "
6878 "module type was detected.\n");
6879 e_dev_err("Reload the driver after installing a supported "
6880 "module.\n");
04f165ef
PW		 6881 goto err_sw_init;
6882 } else if (err) {
849c4542 6883 e_dev_err("HW Init failed: %d\n", err);
c44ade9e
JB		 6884 goto err_sw_init;
6885 }
6886
1cdd1ec8
GR		 6887 ixgbe_probe_vf(adapter, ii);
6888
396e799c 6889 netdev->features = NETIF_F_SG |
e8e9f696
JP		 6890 NETIF_F_IP_CSUM |
6891 NETIF_F_HW_VLAN_TX |
6892 NETIF_F_HW_VLAN_RX |
6893 NETIF_F_HW_VLAN_FILTER;
9a799d71 6894
e9990a9c 6895 netdev->features |= NETIF_F_IPV6_CSUM;
9a799d71 6896 netdev->features |= NETIF_F_TSO;
9a799d71 6897 netdev->features |= NETIF_F_TSO6;
78b6f4ce 6898 netdev->features |= NETIF_F_GRO;
ad31c402 6899
45a5ead0
JB		 6900 if (adapter->hw.mac.type == ixgbe_mac_82599EB)
6901 netdev->features |= NETIF_F_SCTP_CSUM;
6902
ad31c402
JK		 6903 netdev->vlan_features |= NETIF_F_TSO;
6904 netdev->vlan_features |= NETIF_F_TSO6;
22f32b7a 6905 netdev->vlan_features |= NETIF_F_IP_CSUM;
cd1da503 6906 netdev->vlan_features |= NETIF_F_IPV6_CSUM;
ad31c402
JK		 6907 netdev->vlan_features |= NETIF_F_SG;
6908
1cdd1ec8
GR		 6909 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
6910 adapter->flags &= ~(IXGBE_FLAG_RSS_ENABLED |
6911 IXGBE_FLAG_DCB_ENABLED);
2f90b865
AD		 6912 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
6913 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
6914
7a6b6f51 6915#ifdef CONFIG_IXGBE_DCB
2f90b865
AD		 6916 netdev->dcbnl_ops = &dcbnl_ops;
6917#endif
6918
eacd73f7 6919#ifdef IXGBE_FCOE
0d551589 6920 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
eacd73f7
YZ		 6921 if (hw->mac.ops.get_device_caps) {
6922 hw->mac.ops.get_device_caps(hw, &device_caps);
0d551589
YZ		 6923 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)
6924 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
eacd73f7
YZ		 6925 }
6926 }
5e09d7f6
YZ		 6927 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
6928 netdev->vlan_features |= NETIF_F_FCOE_CRC;
6929 netdev->vlan_features |= NETIF_F_FSO;
6930 netdev->vlan_features |= NETIF_F_FCOE_MTU;
6931 }
eacd73f7 6932#endif /* IXGBE_FCOE */
7b872a55 6933 if (pci_using_dac) {
9a799d71 6934 netdev->features |= NETIF_F_HIGHDMA;
7b872a55
YZ		 6935 netdev->vlan_features |= NETIF_F_HIGHDMA;
6936 }
9a799d71 6937
0c19d6af 6938 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
f8212f97
AD		 6939 netdev->features |= NETIF_F_LRO;
6940
9a799d71 6941 /* make sure the EEPROM is good */
c44ade9e 6942 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
849c4542 6943 e_dev_err("The EEPROM Checksum Is Not Valid\n");
9a799d71
AK		 6944 err = -EIO;
6945 goto err_eeprom;
6946 }
6947
6948 memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len);
6949 memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len);
6950
c44ade9e 6951 if (ixgbe_validate_mac_addr(netdev->perm_addr)) {
849c4542 6952 e_dev_err("invalid MAC address\n");
9a799d71
AK		 6953 err = -EIO;
6954 goto err_eeprom;
6955 }
6956
61fac744
PW		 6957 /* power down the optics */
6958 if (hw->phy.multispeed_fiber)
6959 hw->mac.ops.disable_tx_laser(hw);
6960
9a799d71 6961 init_timer(&adapter->watchdog_timer);
c061b18d 6962 adapter->watchdog_timer.function = ixgbe_watchdog;
9a799d71
AK		 6963 adapter->watchdog_timer.data = (unsigned long)adapter;
6964
6965 INIT_WORK(&adapter->reset_task, ixgbe_reset_task);
cf8280ee 6966 INIT_WORK(&adapter->watchdog_task, ixgbe_watchdog_task);
9a799d71 6967
021230d4
AV		 6968 err = ixgbe_init_interrupt_scheme(adapter);
6969 if (err)
6970 goto err_sw_init;
9a799d71 6971
e8e26350
PW		 6972 switch (pdev->device) {
6973 case IXGBE_DEV_ID_82599_KX4:
495dce12 6974 adapter->wol = (IXGBE_WUFC_MAG | IXGBE_WUFC_EX |
e8e9f696 6975 IXGBE_WUFC_MC | IXGBE_WUFC_BC);
e8e26350
PW		 6976 break;
6977 default:
6978 adapter->wol = 0;
6979 break;
6980 }
e8e26350
PW		 6981 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
6982
04f165ef
PW		 6983 /* pick up the PCI bus settings for reporting later */
6984 hw->mac.ops.get_bus_info(hw);
6985
9a799d71 6986 /* print bus type/speed/width info */
849c4542 6987 e_dev_info("(PCI Express:%s:%s) %pM\n",
e8e9f696
JP		 6988 (hw->bus.speed == ixgbe_bus_speed_5000 ? "5.0Gb/s" :
6989 hw->bus.speed == ixgbe_bus_speed_2500 ? "2.5Gb/s" :
6990 "Unknown"),
6991 (hw->bus.width == ixgbe_bus_width_pcie_x8 ? "Width x8" :
6992 hw->bus.width == ixgbe_bus_width_pcie_x4 ? "Width x4" :
6993 hw->bus.width == ixgbe_bus_width_pcie_x1 ? "Width x1" :
6994 "Unknown"),
6995 netdev->dev_addr);
c44ade9e 6996 ixgbe_read_pba_num_generic(hw, &part_num);
e8e26350 6997 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present)
849c4542
ET		 6998 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, "
6999 "PBA No: %06x-%03x\n",
7000 hw->mac.type, hw->phy.type, hw->phy.sfp_type,
7001 (part_num >> 8), (part_num & 0xff));
e8e26350 7002 else
849c4542
ET		 7003 e_dev_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
7004 hw->mac.type, hw->phy.type,
7005 (part_num >> 8), (part_num & 0xff));
9a799d71 7006
e8e26350 7007 if (hw->bus.width <= ixgbe_bus_width_pcie_x4) {
849c4542
ET		 7008 e_dev_warn("PCI-Express bandwidth available for this card is "
7009 "not sufficient for optimal performance.\n");
7010 e_dev_warn("For optimal performance a x8 PCI-Express slot "
7011 "is required.\n");
0c254d86
AK		 7012 }
7013
34b0368c
PWJ		 7014 /* save off EEPROM version number */
7015 hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version);
7016
9a799d71 7017 /* reset the hardware with the new settings */
794caeb2 7018 err = hw->mac.ops.start_hw(hw);
c44ade9e 7019
794caeb2
PWJ		 7020 if (err == IXGBE_ERR_EEPROM_VERSION) {
7021 /* We are running on a pre-production device, log a warning */
849c4542
ET		 7022 e_dev_warn("This device is a pre-production adapter/LOM. "
7023 "Please be aware there may be issues associated "
7024 "with your hardware. If you are experiencing "
7025 "problems please contact your Intel or hardware "
7026 "representative who provided you with this "
7027 "hardware.\n");
794caeb2 7028 }
9a799d71
AK		 7029 strcpy(netdev->name, "eth%d");
7030 err = register_netdev(netdev);
7031 if (err)
7032 goto err_register;
7033
54386467
JB		 7034 /* carrier off reporting is important to ethtool even BEFORE open */
7035 netif_carrier_off(netdev);
7036
c4cf55e5
PWJ		 7037 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
7038 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
7039 INIT_WORK(&adapter->fdir_reinit_task, ixgbe_fdir_reinit_task);
7040
119fc60a 7041 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
e8e9f696
JP		 7042 INIT_WORK(&adapter->check_overtemp_task,
7043 ixgbe_check_overtemp_task);
5dd2d332 7044#ifdef CONFIG_IXGBE_DCA
652f093f 7045 if (dca_add_requester(&pdev->dev) == 0) {
bd0362dd 7046 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
bd0362dd
JC		 7047 ixgbe_setup_dca(adapter);
7048 }
7049#endif
1cdd1ec8 7050 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
396e799c 7051 e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs);
1cdd1ec8
GR		 7052 for (i = 0; i < adapter->num_vfs; i++)
7053 ixgbe_vf_configuration(pdev, (i | 0x10000000));
7054 }
7055
0365e6e4
PW		 7056 /* add san mac addr to netdev */
7057 ixgbe_add_sanmac_netdev(netdev);
9a799d71 7058
849c4542 7059 e_dev_info("Intel(R) 10 Gigabit Network Connection\n");
9a799d71
AK		 7060 cards_found++;
7061 return 0;
7062
7063err_register:
5eba3699 7064 ixgbe_release_hw_control(adapter);
7a921c93 7065 ixgbe_clear_interrupt_scheme(adapter);
9a799d71
AK		 7066err_sw_init:
7067err_eeprom:
1cdd1ec8
GR		 7068 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
7069 ixgbe_disable_sriov(adapter);
c4900be0
DS		 7070 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
7071 del_timer_sync(&adapter->sfp_timer);
7072 cancel_work_sync(&adapter->sfp_task);
e8e26350
PW		 7073 cancel_work_sync(&adapter->multispeed_fiber_task);
7074 cancel_work_sync(&adapter->sfp_config_module_task);
9a799d71
AK		 7075 iounmap(hw->hw_addr);
7076err_ioremap:
7077 free_netdev(netdev);
7078err_alloc_etherdev:
e8e9f696
JP		 7079 pci_release_selected_regions(pdev,
7080 pci_select_bars(pdev, IORESOURCE_MEM));
9a799d71
AK		 7081err_pci_reg:
7082err_dma:
7083 pci_disable_device(pdev);
7084 return err;
7085}
7086
7087/**
7088 * ixgbe_remove - Device Removal Routine
7089 * @pdev: PCI device information struct
7090 *
7091 * ixgbe_remove is called by the PCI subsystem to alert the driver
7092 * that it should release a PCI device. The could be caused by a
7093 * Hot-Plug event, or because the driver is going to be removed from
7094 * memory.
7095 **/
7096static void __devexit ixgbe_remove(struct pci_dev *pdev)
7097{
7098 struct net_device *netdev = pci_get_drvdata(pdev);
7099 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7100
7101 set_bit(__IXGBE_DOWN, &adapter->state);
c4900be0
DS		 7102 /* clear the module not found bit to make sure the worker won't
7103 * reschedule
7104 */
7105 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
9a799d71
AK		 7106 del_timer_sync(&adapter->watchdog_timer);
7107
c4900be0
DS		 7108 del_timer_sync(&adapter->sfp_timer);
7109 cancel_work_sync(&adapter->watchdog_task);
7110 cancel_work_sync(&adapter->sfp_task);
e8e26350
PW		 7111 cancel_work_sync(&adapter->multispeed_fiber_task);
7112 cancel_work_sync(&adapter->sfp_config_module_task);
c4cf55e5
PWJ		 7113 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
7114 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
7115 cancel_work_sync(&adapter->fdir_reinit_task);
9a799d71
AK		 7116 flush_scheduled_work();
7117
5dd2d332 7118#ifdef CONFIG_IXGBE_DCA
bd0362dd
JC		 7119 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
7120 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
7121 dca_remove_requester(&pdev->dev);
7122 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
7123 }
7124
7125#endif
332d4a7d
YZ		 7126#ifdef IXGBE_FCOE
7127 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
7128 ixgbe_cleanup_fcoe(adapter);
7129
7130#endif /* IXGBE_FCOE */
0365e6e4
PW		 7131
7132 /* remove the added san mac */
7133 ixgbe_del_sanmac_netdev(netdev);
7134
c4900be0
DS		 7135 if (netdev->reg_state == NETREG_REGISTERED)
7136 unregister_netdev(netdev);
9a799d71 7137
1cdd1ec8
GR		 7138 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
7139 ixgbe_disable_sriov(adapter);
7140
7a921c93 7141 ixgbe_clear_interrupt_scheme(adapter);
5eba3699 7142
021230d4 7143 ixgbe_release_hw_control(adapter);
9a799d71
AK		 7144
7145 iounmap(adapter->hw.hw_addr);
9ce77666 7146 pci_release_selected_regions(pdev, pci_select_bars(pdev,
e8e9f696 7147 IORESOURCE_MEM));
9a799d71 7148
849c4542 7149 e_dev_info("complete\n");
021230d4 7150
9a799d71
AK		 7151 free_netdev(netdev);
7152
19d5afd4 7153 pci_disable_pcie_error_reporting(pdev);
6fabd715 7154
9a799d71
AK		 7155 pci_disable_device(pdev);
7156}
7157
7158/**
7159 * ixgbe_io_error_detected - called when PCI error is detected
7160 * @pdev: Pointer to PCI device
7161 * @state: The current pci connection state
7162 *
7163 * This function is called after a PCI bus error affecting
7164 * this device has been detected.
7165 */
7166static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
e8e9f696 7167 pci_channel_state_t state)
9a799d71
AK		 7168{
7169 struct net_device *netdev = pci_get_drvdata(pdev);
454d7c9b 7170 struct ixgbe_adapter *adapter = netdev_priv(netdev);
9a799d71
AK		 7171
7172 netif_device_detach(netdev);
7173
3044b8d1
BL		 7174 if (state == pci_channel_io_perm_failure)
7175 return PCI_ERS_RESULT_DISCONNECT;
7176
9a799d71
AK		 7177 if (netif_running(netdev))
7178 ixgbe_down(adapter);
7179 pci_disable_device(pdev);
7180
b4617240 7181 /* Request a slot reset. */
9a799d71
AK		 7182 return PCI_ERS_RESULT_NEED_RESET;
7183}
7184
7185/**
7186 * ixgbe_io_slot_reset - called after the pci bus has been reset.
7187 * @pdev: Pointer to PCI device
7188 *
7189 * Restart the card from scratch, as if from a cold-boot.
7190 */
7191static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
7192{
7193 struct net_device *netdev = pci_get_drvdata(pdev);
454d7c9b 7194 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6fabd715
PWJ		 7195 pci_ers_result_t result;
7196 int err;
9a799d71 7197
9ce77666 7198 if (pci_enable_device_mem(pdev)) {
396e799c 7199 e_err(probe, "Cannot re-enable PCI device after reset.\n");
6fabd715
PWJ		 7200 result = PCI_ERS_RESULT_DISCONNECT;
7201 } else {
7202 pci_set_master(pdev);
7203 pci_restore_state(pdev);
c0e1f68b 7204 pci_save_state(pdev);
9a799d71 7205
dd4d8ca6 7206 pci_wake_from_d3(pdev, false);
9a799d71 7207
6fabd715 7208 ixgbe_reset(adapter);
88512539 7209 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
6fabd715
PWJ		 7210 result = PCI_ERS_RESULT_RECOVERED;
7211 }
7212
7213 err = pci_cleanup_aer_uncorrect_error_status(pdev);
7214 if (err) {
849c4542
ET		 7215 e_dev_err("pci_cleanup_aer_uncorrect_error_status "
7216 "failed 0x%0x\n", err);
6fabd715
PWJ		 7217 /* non-fatal, continue */
7218 }
9a799d71 7219
6fabd715 7220 return result;
9a799d71
AK		 7221}
7222
7223/**
7224 * ixgbe_io_resume - called when traffic can start flowing again.
7225 * @pdev: Pointer to PCI device
7226 *
7227 * This callback is called when the error recovery driver tells us that
7228 * its OK to resume normal operation.
7229 */
7230static void ixgbe_io_resume(struct pci_dev *pdev)
7231{
7232 struct net_device *netdev = pci_get_drvdata(pdev);
454d7c9b 7233 struct ixgbe_adapter *adapter = netdev_priv(netdev);
9a799d71
AK		 7234
7235 if (netif_running(netdev)) {
7236 if (ixgbe_up(adapter)) {
396e799c 7237 e_info(probe, "ixgbe_up failed after reset\n");
9a799d71
AK		 7238 return;
7239 }
7240 }
7241
7242 netif_device_attach(netdev);
9a799d71
AK		 7243}
7244
7245static struct pci_error_handlers ixgbe_err_handler = {
7246 .error_detected = ixgbe_io_error_detected,
7247 .slot_reset = ixgbe_io_slot_reset,
7248 .resume = ixgbe_io_resume,
7249};
7250
7251static struct pci_driver ixgbe_driver = {
7252 .name = ixgbe_driver_name,
7253 .id_table = ixgbe_pci_tbl,
7254 .probe = ixgbe_probe,
7255 .remove = __devexit_p(ixgbe_remove),
7256#ifdef CONFIG_PM
7257 .suspend = ixgbe_suspend,
7258 .resume = ixgbe_resume,
7259#endif
7260 .shutdown = ixgbe_shutdown,
7261 .err_handler = &ixgbe_err_handler
7262};
7263
7264/**
7265 * ixgbe_init_module - Driver Registration Routine
7266 *
7267 * ixgbe_init_module is the first routine called when the driver is
7268 * loaded. All it does is register with the PCI subsystem.
7269 **/
7270static int __init ixgbe_init_module(void)
7271{
7272 int ret;
c7689578 7273 pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version);
849c4542 7274 pr_info("%s\n", ixgbe_copyright);
9a799d71 7275
5dd2d332 7276#ifdef CONFIG_IXGBE_DCA
bd0362dd 7277 dca_register_notify(&dca_notifier);
bd0362dd 7278#endif
5dd2d332 7279
9a799d71
AK		 7280 ret = pci_register_driver(&ixgbe_driver);
7281 return ret;
7282}
b4617240 7283
9a799d71
AK		 7284module_init(ixgbe_init_module);
7285
7286/**
7287 * ixgbe_exit_module - Driver Exit Cleanup Routine
7288 *
7289 * ixgbe_exit_module is called just before the driver is removed
7290 * from memory.
7291 **/
7292static void __exit ixgbe_exit_module(void)
7293{
5dd2d332 7294#ifdef CONFIG_IXGBE_DCA
bd0362dd
JC		 7295 dca_unregister_notify(&dca_notifier);
7296#endif
9a799d71 7297 pci_unregister_driver(&ixgbe_driver);
1a51502b 7298 rcu_barrier(); /* Wait for completion of call_rcu()'s */
9a799d71 7299}
bd0362dd 7300
5dd2d332 7301#ifdef CONFIG_IXGBE_DCA
bd0362dd 7302static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event,
e8e9f696 7303 void *p)
bd0362dd
JC		 7304{
7305 int ret_val;
7306
7307 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event,
e8e9f696 7308 __ixgbe_notify_dca);
bd0362dd
JC		 7309
7310 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
7311}
b453368d 7312
5dd2d332 7313#endif /* CONFIG_IXGBE_DCA */
849c4542 7314
b453368d 7315/**
849c4542 7316 * ixgbe_get_hw_dev return device
b453368d
AD		 7317 * used by hardware layer to print debugging information
7318 **/
849c4542 7319struct net_device *ixgbe_get_hw_dev(struct ixgbe_hw *hw)
b453368d
AD		 7320{
7321 struct ixgbe_adapter *adapter = hw->back;
849c4542 7322 return adapter->netdev;
b453368d 7323}
bd0362dd 7324
9a799d71
AK		 7325module_exit(ixgbe_exit_module);
7326
7327/* ixgbe_main.c */
Clone of davem's net-next-2.6 tree