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ixgbe: consolidate MRQC and MTQC handling
[linux-2.6-block.git] / drivers / net / ixgbe / ixgbe_main.c
CommitLineData
9a799d71
AK		 1/*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
a52055e0 4 Copyright(c) 1999 - 2011 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>
a6b7a407 35#include <linux/interrupt.h>
9a799d71
AK		 36#include <linux/ip.h>
37#include <linux/tcp.h>
60127865 38#include <linux/pkt_sched.h>
9a799d71 39#include <linux/ipv6.h>
5a0e3ad6 40#include <linux/slab.h>
9a799d71
AK		 41#include <net/checksum.h>
42#include <net/ip6_checksum.h>
43#include <linux/ethtool.h>
44#include <linux/if_vlan.h>
70c71606 45#include <linux/prefetch.h>
eacd73f7 46#include <scsi/fc/fc_fcoe.h>
9a799d71
AK		 47
48#include "ixgbe.h"
49#include "ixgbe_common.h"
ee5f784a 50#include "ixgbe_dcb_82599.h"
1cdd1ec8 51#include "ixgbe_sriov.h"
9a799d71
AK		 52
53char ixgbe_driver_name[] = "ixgbe";
9c8eb720 54static const char ixgbe_driver_string[] =
e8e9f696 55 "Intel(R) 10 Gigabit PCI Express Network Driver";
75e3d3c6 56#define MAJ 3
c89c7112
DS		 57#define MIN 3
58#define BUILD 8
75e3d3c6
JK		 59#define KFIX 2
60#define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \
61 __stringify(BUILD) "-k" __stringify(KFIX)
9c8eb720 62const char ixgbe_driver_version[] = DRV_VERSION;
a52055e0
DS		 63static const char ixgbe_copyright[] =
64 "Copyright (c) 1999-2011 Intel Corporation.";
9a799d71
AK		 65
66static const struct ixgbe_info *ixgbe_info_tbl[] = {
b4617240 67 [board_82598] = &ixgbe_82598_info,
e8e26350 68 [board_82599] = &ixgbe_82599_info,
fe15e8e1 69 [board_X540] = &ixgbe_X540_info,
9a799d71
AK		 70};
71
72/* ixgbe_pci_tbl - PCI Device ID Table
73 *
74 * Wildcard entries (PCI_ANY_ID) should come last
75 * Last entry must be all 0s
76 *
77 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
78 * Class, Class Mask, private data (not used) }
79 */
a3aa1884 80static DEFINE_PCI_DEVICE_TABLE(ixgbe_pci_tbl) = {
1e336d0f
DS		 81 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598),
82 board_82598 },
9a799d71 83 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT),
3957d63d 84 board_82598 },
9a799d71 85 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT),
3957d63d 86 board_82598 },
0befdb3e
JB		 87 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT),
88 board_82598 },
3845bec0
PWJ		 89 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2),
90 board_82598 },
9a799d71 91 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4),
3957d63d 92 board_82598 },
8d792cd9
JB		 93 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT),
94 board_82598 },
c4900be0
DS		 95 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT),
96 board_82598 },
97 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM),
98 board_82598 },
b95f5fcb
JB		 99 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR),
100 board_82598 },
c4900be0
DS		 101 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM),
102 board_82598 },
2f21bdd3
DS		 103 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX),
104 board_82598 },
e8e26350
PW		 105 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4),
106 board_82599 },
1fcf03e6
PWJ		 107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM),
108 board_82599 },
74757d49
DS		 109 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR),
110 board_82599 },
e8e26350
PW		 111 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP),
112 board_82599 },
38ad1c8e
DS		 113 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM),
114 board_82599 },
dbfec662
DS		 115 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ),
116 board_82599 },
8911184f
PWJ		 117 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4),
118 board_82599 },
dbffcb21
DS		 119 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_BACKPLANE_FCOE),
120 board_82599 },
121 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_FCOE),
122 board_82599 },
119fc60a
MC		 123 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM),
124 board_82599 },
312eb931
DS		 125 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE),
126 board_82599 },
b93a2226 127 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T),
d994653d 128 board_X540 },
4c40ef02
ET		 129 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF2),
130 board_82599 },
4f6290cf
DS		 131 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_LS),
132 board_82599 },
9a799d71
AK		 133
134 /* required last entry */
135 {0, }
136};
137MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl);
138
5dd2d332 139#ifdef CONFIG_IXGBE_DCA
bd0362dd 140static int ixgbe_notify_dca(struct notifier_block *, unsigned long event,
e8e9f696 141 void *p);
bd0362dd
JC		 142static struct notifier_block dca_notifier = {
143 .notifier_call = ixgbe_notify_dca,
144 .next = NULL,
145 .priority = 0
146};
147#endif
148
1cdd1ec8
GR		 149#ifdef CONFIG_PCI_IOV
150static unsigned int max_vfs;
151module_param(max_vfs, uint, 0);
e8e9f696
JP		 152MODULE_PARM_DESC(max_vfs,
153 "Maximum number of virtual functions to allocate per physical function");
1cdd1ec8
GR		 154#endif /* CONFIG_PCI_IOV */
155
9a799d71
AK		 156MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
157MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
158MODULE_LICENSE("GPL");
159MODULE_VERSION(DRV_VERSION);
160
161#define DEFAULT_DEBUG_LEVEL_SHIFT 3
162
1cdd1ec8
GR		 163static inline void ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
164{
165 struct ixgbe_hw *hw = &adapter->hw;
166 u32 gcr;
167 u32 gpie;
168 u32 vmdctl;
169
170#ifdef CONFIG_PCI_IOV
171 /* disable iov and allow time for transactions to clear */
172 pci_disable_sriov(adapter->pdev);
173#endif
174
175 /* turn off device IOV mode */
176 gcr = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
177 gcr &= ~(IXGBE_GCR_EXT_SRIOV);
178 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr);
179 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
180 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
181 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
182
183 /* set default pool back to 0 */
184 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
185 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
186 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
187
188 /* take a breather then clean up driver data */
189 msleep(100);
e8e9f696
JP		 190
191 kfree(adapter->vfinfo);
1cdd1ec8
GR		 192 adapter->vfinfo = NULL;
193
194 adapter->num_vfs = 0;
195 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
196}
197
7086400d
AD		 198static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter)
199{
200 if (!test_bit(__IXGBE_DOWN, &adapter->state) &&
201 !test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state))
202 schedule_work(&adapter->service_task);
203}
204
205static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter)
206{
207 BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state));
208
209 /* flush memory to make sure state is correct before next watchog */
210 smp_mb__before_clear_bit();
211 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state);
212}
213
dcd79aeb
TI		 214struct ixgbe_reg_info {
215 u32 ofs;
216 char *name;
217};
218
219static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = {
220
221 /* General Registers */
222 {IXGBE_CTRL, "CTRL"},
223 {IXGBE_STATUS, "STATUS"},
224 {IXGBE_CTRL_EXT, "CTRL_EXT"},
225
226 /* Interrupt Registers */
227 {IXGBE_EICR, "EICR"},
228
229 /* RX Registers */
230 {IXGBE_SRRCTL(0), "SRRCTL"},
231 {IXGBE_DCA_RXCTRL(0), "DRXCTL"},
232 {IXGBE_RDLEN(0), "RDLEN"},
233 {IXGBE_RDH(0), "RDH"},
234 {IXGBE_RDT(0), "RDT"},
235 {IXGBE_RXDCTL(0), "RXDCTL"},
236 {IXGBE_RDBAL(0), "RDBAL"},
237 {IXGBE_RDBAH(0), "RDBAH"},
238
239 /* TX Registers */
240 {IXGBE_TDBAL(0), "TDBAL"},
241 {IXGBE_TDBAH(0), "TDBAH"},
242 {IXGBE_TDLEN(0), "TDLEN"},
243 {IXGBE_TDH(0), "TDH"},
244 {IXGBE_TDT(0), "TDT"},
245 {IXGBE_TXDCTL(0), "TXDCTL"},
246
247 /* List Terminator */
248 {}
249};
250
251
252/*
253 * ixgbe_regdump - register printout routine
254 */
255static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo)
256{
257 int i = 0, j = 0;
258 char rname[16];
259 u32 regs[64];
260
261 switch (reginfo->ofs) {
262 case IXGBE_SRRCTL(0):
263 for (i = 0; i < 64; i++)
264 regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i));
265 break;
266 case IXGBE_DCA_RXCTRL(0):
267 for (i = 0; i < 64; i++)
268 regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
269 break;
270 case IXGBE_RDLEN(0):
271 for (i = 0; i < 64; i++)
272 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i));
273 break;
274 case IXGBE_RDH(0):
275 for (i = 0; i < 64; i++)
276 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i));
277 break;
278 case IXGBE_RDT(0):
279 for (i = 0; i < 64; i++)
280 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i));
281 break;
282 case IXGBE_RXDCTL(0):
283 for (i = 0; i < 64; i++)
284 regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
285 break;
286 case IXGBE_RDBAL(0):
287 for (i = 0; i < 64; i++)
288 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i));
289 break;
290 case IXGBE_RDBAH(0):
291 for (i = 0; i < 64; i++)
292 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i));
293 break;
294 case IXGBE_TDBAL(0):
295 for (i = 0; i < 64; i++)
296 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i));
297 break;
298 case IXGBE_TDBAH(0):
299 for (i = 0; i < 64; i++)
300 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i));
301 break;
302 case IXGBE_TDLEN(0):
303 for (i = 0; i < 64; i++)
304 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i));
305 break;
306 case IXGBE_TDH(0):
307 for (i = 0; i < 64; i++)
308 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i));
309 break;
310 case IXGBE_TDT(0):
311 for (i = 0; i < 64; i++)
312 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i));
313 break;
314 case IXGBE_TXDCTL(0):
315 for (i = 0; i < 64; i++)
316 regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
317 break;
318 default:
c7689578 319 pr_info("%-15s %08x\n", reginfo->name,
dcd79aeb
TI		 320 IXGBE_READ_REG(hw, reginfo->ofs));
321 return;
322 }
323
324 for (i = 0; i < 8; i++) {
325 snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i*8, i*8+7);
c7689578 326 pr_err("%-15s", rname);
dcd79aeb 327 for (j = 0; j < 8; j++)
c7689578
JP		 328 pr_cont(" %08x", regs[i*8+j]);
329 pr_cont("\n");
dcd79aeb
TI		 330 }
331
332}
333
334/*
335 * ixgbe_dump - Print registers, tx-rings and rx-rings
336 */
337static void ixgbe_dump(struct ixgbe_adapter *adapter)
338{
339 struct net_device *netdev = adapter->netdev;
340 struct ixgbe_hw *hw = &adapter->hw;
341 struct ixgbe_reg_info *reginfo;
342 int n = 0;
343 struct ixgbe_ring *tx_ring;
344 struct ixgbe_tx_buffer *tx_buffer_info;
345 union ixgbe_adv_tx_desc *tx_desc;
346 struct my_u0 { u64 a; u64 b; } *u0;
347 struct ixgbe_ring *rx_ring;
348 union ixgbe_adv_rx_desc *rx_desc;
349 struct ixgbe_rx_buffer *rx_buffer_info;
350 u32 staterr;
351 int i = 0;
352
353 if (!netif_msg_hw(adapter))
354 return;
355
356 /* Print netdevice Info */
357 if (netdev) {
358 dev_info(&adapter->pdev->dev, "Net device Info\n");
c7689578 359 pr_info("Device Name state "
dcd79aeb 360 "trans_start last_rx\n");
c7689578
JP		 361 pr_info("%-15s %016lX %016lX %016lX\n",
362 netdev->name,
363 netdev->state,
364 netdev->trans_start,
365 netdev->last_rx);
dcd79aeb
TI		 366 }
367
368 /* Print Registers */
369 dev_info(&adapter->pdev->dev, "Register Dump\n");
c7689578 370 pr_info(" Register Name Value\n");
dcd79aeb
TI		 371 for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl;
372 reginfo->name; reginfo++) {
373 ixgbe_regdump(hw, reginfo);
374 }
375
376 /* Print TX Ring Summary */
377 if (!netdev || !netif_running(netdev))
378 goto exit;
379
380 dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
c7689578 381 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
dcd79aeb
TI		 382 for (n = 0; n < adapter->num_tx_queues; n++) {
383 tx_ring = adapter->tx_ring[n];
384 tx_buffer_info =
385 &tx_ring->tx_buffer_info[tx_ring->next_to_clean];
c7689578 386 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
dcd79aeb
TI		 387 n, tx_ring->next_to_use, tx_ring->next_to_clean,
388 (u64)tx_buffer_info->dma,
389 tx_buffer_info->length,
390 tx_buffer_info->next_to_watch,
391 (u64)tx_buffer_info->time_stamp);
392 }
393
394 /* Print TX Rings */
395 if (!netif_msg_tx_done(adapter))
396 goto rx_ring_summary;
397
398 dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
399
400 /* Transmit Descriptor Formats
401 *
402 * Advanced Transmit Descriptor
403 * +--------------------------------------------------------------+
404 * 0 | Buffer Address [63:0] |
405 * +--------------------------------------------------------------+
406 * 8 | PAYLEN | PORTS | IDX | STA | DCMD |DTYP | RSV | DTALEN |
407 * +--------------------------------------------------------------+
408 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0
409 */
410
411 for (n = 0; n < adapter->num_tx_queues; n++) {
412 tx_ring = adapter->tx_ring[n];
c7689578
JP		 413 pr_info("------------------------------------\n");
414 pr_info("TX QUEUE INDEX = %d\n", tx_ring->queue_index);
415 pr_info("------------------------------------\n");
416 pr_info("T [desc] [address 63:0 ] "
dcd79aeb
TI		 417 "[PlPOIdStDDt Ln] [bi->dma ] "
418 "leng ntw timestamp bi->skb\n");
419
420 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
31f05a2d 421 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
dcd79aeb
TI		 422 tx_buffer_info = &tx_ring->tx_buffer_info[i];
423 u0 = (struct my_u0 *)tx_desc;
c7689578 424 pr_info("T [0x%03X] %016llX %016llX %016llX"
dcd79aeb
TI		 425 " %04X %3X %016llX %p", i,
426 le64_to_cpu(u0->a),
427 le64_to_cpu(u0->b),
428 (u64)tx_buffer_info->dma,
429 tx_buffer_info->length,
430 tx_buffer_info->next_to_watch,
431 (u64)tx_buffer_info->time_stamp,
432 tx_buffer_info->skb);
433 if (i == tx_ring->next_to_use &&
434 i == tx_ring->next_to_clean)
c7689578 435 pr_cont(" NTC/U\n");
dcd79aeb 436 else if (i == tx_ring->next_to_use)
c7689578 437 pr_cont(" NTU\n");
dcd79aeb 438 else if (i == tx_ring->next_to_clean)
c7689578 439 pr_cont(" NTC\n");
dcd79aeb 440 else
c7689578 441 pr_cont("\n");
dcd79aeb
TI		 442
443 if (netif_msg_pktdata(adapter) &&
444 tx_buffer_info->dma != 0)
445 print_hex_dump(KERN_INFO, "",
446 DUMP_PREFIX_ADDRESS, 16, 1,
447 phys_to_virt(tx_buffer_info->dma),
448 tx_buffer_info->length, true);
449 }
450 }
451
452 /* Print RX Rings Summary */
453rx_ring_summary:
454 dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
c7689578 455 pr_info("Queue [NTU] [NTC]\n");
dcd79aeb
TI		 456 for (n = 0; n < adapter->num_rx_queues; n++) {
457 rx_ring = adapter->rx_ring[n];
c7689578
JP		 458 pr_info("%5d %5X %5X\n",
459 n, rx_ring->next_to_use, rx_ring->next_to_clean);
dcd79aeb
TI		 460 }
461
462 /* Print RX Rings */
463 if (!netif_msg_rx_status(adapter))
464 goto exit;
465
466 dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
467
468 /* Advanced Receive Descriptor (Read) Format
469 * 63 1 0
470 * +-----------------------------------------------------+
471 * 0 | Packet Buffer Address [63:1] |A0/NSE|
472 * +----------------------------------------------+------+
473 * 8 | Header Buffer Address [63:1] | DD |
474 * +-----------------------------------------------------+
475 *
476 *
477 * Advanced Receive Descriptor (Write-Back) Format
478 *
479 * 63 48 47 32 31 30 21 20 16 15 4 3 0
480 * +------------------------------------------------------+
481 * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS |
482 * | Checksum Ident | | | | Type | Type |
483 * +------------------------------------------------------+
484 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
485 * +------------------------------------------------------+
486 * 63 48 47 32 31 20 19 0
487 */
488 for (n = 0; n < adapter->num_rx_queues; n++) {
489 rx_ring = adapter->rx_ring[n];
c7689578
JP		 490 pr_info("------------------------------------\n");
491 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index);
492 pr_info("------------------------------------\n");
493 pr_info("R [desc] [ PktBuf A0] "
dcd79aeb
TI		 494 "[ HeadBuf DD] [bi->dma ] [bi->skb] "
495 "<-- Adv Rx Read format\n");
c7689578 496 pr_info("RWB[desc] [PcsmIpSHl PtRs] "
dcd79aeb
TI		 497 "[vl er S cks ln] ---------------- [bi->skb] "
498 "<-- Adv Rx Write-Back format\n");
499
500 for (i = 0; i < rx_ring->count; i++) {
501 rx_buffer_info = &rx_ring->rx_buffer_info[i];
31f05a2d 502 rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
dcd79aeb
TI		 503 u0 = (struct my_u0 *)rx_desc;
504 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
505 if (staterr & IXGBE_RXD_STAT_DD) {
506 /* Descriptor Done */
c7689578 507 pr_info("RWB[0x%03X] %016llX "
dcd79aeb
TI		 508 "%016llX ---------------- %p", i,
509 le64_to_cpu(u0->a),
510 le64_to_cpu(u0->b),
511 rx_buffer_info->skb);
512 } else {
c7689578 513 pr_info("R [0x%03X] %016llX "
dcd79aeb
TI		 514 "%016llX %016llX %p", i,
515 le64_to_cpu(u0->a),
516 le64_to_cpu(u0->b),
517 (u64)rx_buffer_info->dma,
518 rx_buffer_info->skb);
519
520 if (netif_msg_pktdata(adapter)) {
521 print_hex_dump(KERN_INFO, "",
522 DUMP_PREFIX_ADDRESS, 16, 1,
523 phys_to_virt(rx_buffer_info->dma),
524 rx_ring->rx_buf_len, true);
525
526 if (rx_ring->rx_buf_len
527 < IXGBE_RXBUFFER_2048)
528 print_hex_dump(KERN_INFO, "",
529 DUMP_PREFIX_ADDRESS, 16, 1,
530 phys_to_virt(
531 rx_buffer_info->page_dma +
532 rx_buffer_info->page_offset
533 ),
534 PAGE_SIZE/2, true);
535 }
536 }
537
538 if (i == rx_ring->next_to_use)
c7689578 539 pr_cont(" NTU\n");
dcd79aeb 540 else if (i == rx_ring->next_to_clean)
c7689578 541 pr_cont(" NTC\n");
dcd79aeb 542 else
c7689578 543 pr_cont("\n");
dcd79aeb
TI		 544
545 }
546 }
547
548exit:
549 return;
550}
551
5eba3699
AV		 552static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter)
553{
554 u32 ctrl_ext;
555
556 /* Let firmware take over control of h/w */
557 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
558 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
e8e9f696 559 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
5eba3699
AV		 560}
561
562static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter)
563{
564 u32 ctrl_ext;
565
566 /* Let firmware know the driver has taken over */
567 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
568 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
e8e9f696 569 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
5eba3699 570}
9a799d71 571
e8e26350
PW		 572/*
573 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
574 * @adapter: pointer to adapter struct
575 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
576 * @queue: queue to map the corresponding interrupt to
577 * @msix_vector: the vector to map to the corresponding queue
578 *
579 */
580static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction,
e8e9f696 581 u8 queue, u8 msix_vector)
9a799d71
AK		 582{
583 u32 ivar, index;
e8e26350
PW		 584 struct ixgbe_hw *hw = &adapter->hw;
585 switch (hw->mac.type) {
586 case ixgbe_mac_82598EB:
587 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
588 if (direction == -1)
589 direction = 0;
590 index = (((direction * 64) + queue) >> 2) & 0x1F;
591 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
592 ivar &= ~(0xFF << (8 * (queue & 0x3)));
593 ivar |= (msix_vector << (8 * (queue & 0x3)));
594 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
595 break;
596 case ixgbe_mac_82599EB:
b93a2226 597 case ixgbe_mac_X540:
e8e26350
PW		 598 if (direction == -1) {
599 /* other causes */
600 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
601 index = ((queue & 1) * 8);
602 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC);
603 ivar &= ~(0xFF << index);
604 ivar |= (msix_vector << index);
605 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar);
606 break;
607 } else {
608 /* tx or rx causes */
609 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
610 index = ((16 * (queue & 1)) + (8 * direction));
611 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1));
612 ivar &= ~(0xFF << index);
613 ivar |= (msix_vector << index);
614 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar);
615 break;
616 }
617 default:
618 break;
619 }
9a799d71
AK		 620}
621
fe49f04a 622static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter,
e8e9f696 623 u64 qmask)
fe49f04a
AD		 624{
625 u32 mask;
626
bd508178
AD		 627 switch (adapter->hw.mac.type) {
628 case ixgbe_mac_82598EB:
fe49f04a
AD		 629 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
630 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask);
bd508178
AD		 631 break;
632 case ixgbe_mac_82599EB:
b93a2226 633 case ixgbe_mac_X540:
fe49f04a
AD		 634 mask = (qmask & 0xFFFFFFFF);
635 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask);
636 mask = (qmask >> 32);
637 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask);
bd508178
AD		 638 break;
639 default:
640 break;
fe49f04a
AD		 641 }
642}
643
b6ec895e
AD		 644void ixgbe_unmap_and_free_tx_resource(struct ixgbe_ring *tx_ring,
645 struct ixgbe_tx_buffer *tx_buffer_info)
9a799d71 646{
e5a43549
AD		 647 if (tx_buffer_info->dma) {
648 if (tx_buffer_info->mapped_as_page)
b6ec895e 649 dma_unmap_page(tx_ring->dev,
e5a43549
AD		 650 tx_buffer_info->dma,
651 tx_buffer_info->length,
1b507730 652 DMA_TO_DEVICE);
e5a43549 653 else
b6ec895e 654 dma_unmap_single(tx_ring->dev,
e5a43549
AD		 655 tx_buffer_info->dma,
656 tx_buffer_info->length,
1b507730 657 DMA_TO_DEVICE);
e5a43549
AD		 658 tx_buffer_info->dma = 0;
659 }
9a799d71
AK		 660 if (tx_buffer_info->skb) {
661 dev_kfree_skb_any(tx_buffer_info->skb);
662 tx_buffer_info->skb = NULL;
663 }
44df32c5 664 tx_buffer_info->time_stamp = 0;
9a799d71
AK		 665 /* tx_buffer_info must be completely set up in the transmit path */
666}
667
26f23d82 668/**
c84d324c
JF		 669 * ixgbe_dcb_txq_to_tc - convert a reg index to a traffic class
670 * @adapter: driver private struct
671 * @index: reg idx of queue to query (0-127)
26f23d82 672 *
25985edc 673 * Helper function to determine the traffic index for a particular
c84d324c 674 * register index.
26f23d82 675 *
c84d324c 676 * Returns : a tc index for use in range 0-7, or 0-3
26f23d82 677 */
3b2ee943 678static u8 ixgbe_dcb_txq_to_tc(struct ixgbe_adapter *adapter, u8 reg_idx)
26f23d82 679{
c84d324c 680 int tc = -1;
e5b64635 681 int dcb_i = netdev_get_num_tc(adapter->netdev);
26f23d82 682
c84d324c
JF		 683 /* if DCB is not enabled the queues have no TC */
684 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
685 return tc;
26f23d82 686
c84d324c
JF		 687 /* check valid range */
688 if (reg_idx >= adapter->hw.mac.max_tx_queues)
689 return tc;
690
691 switch (adapter->hw.mac.type) {
692 case ixgbe_mac_82598EB:
693 tc = reg_idx >> 2;
694 break;
695 default:
696 if (dcb_i != 4 && dcb_i != 8)
6837e895 697 break;
c84d324c
JF		 698
699 /* if VMDq is enabled the lowest order bits determine TC */
700 if (adapter->flags & (IXGBE_FLAG_SRIOV_ENABLED |
701 IXGBE_FLAG_VMDQ_ENABLED)) {
702 tc = reg_idx & (dcb_i - 1);
703 break;
704 }
705
706 /*
707 * Convert the reg_idx into the correct TC. This bitmask
708 * targets the last full 32 ring traffic class and assigns
709 * it a value of 1. From there the rest of the rings are
710 * based on shifting the mask further up to include the
711 * reg_idx / 16 and then reg_idx / 8. It assumes dcB_i
712 * will only ever be 8 or 4 and that reg_idx will never
713 * be greater then 128. The code without the power of 2
714 * optimizations would be:
715 * (((reg_idx % 32) + 32) * dcb_i) >> (9 - reg_idx / 32)
716 */
717 tc = ((reg_idx & 0X1F) + 0x20) * dcb_i;
718 tc >>= 9 - (reg_idx >> 5);
719 }
720
721 return tc;
722}
723
724static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter)
725{
726 struct ixgbe_hw *hw = &adapter->hw;
727 struct ixgbe_hw_stats *hwstats = &adapter->stats;
728 u32 data = 0;
729 u32 xoff[8] = {0};
730 int i;
731
732 if ((hw->fc.current_mode == ixgbe_fc_full) ||
733 (hw->fc.current_mode == ixgbe_fc_rx_pause)) {
734 switch (hw->mac.type) {
735 case ixgbe_mac_82598EB:
736 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
6837e895
PW		 737 break;
738 default:
c84d324c
JF		 739 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
740 }
741 hwstats->lxoffrxc += data;
742
743 /* refill credits (no tx hang) if we received xoff */
744 if (!data)
745 return;
746
747 for (i = 0; i < adapter->num_tx_queues; i++)
748 clear_bit(__IXGBE_HANG_CHECK_ARMED,
749 &adapter->tx_ring[i]->state);
750 return;
751 } else if (!(adapter->dcb_cfg.pfc_mode_enable))
752 return;
753
754 /* update stats for each tc, only valid with PFC enabled */
755 for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) {
756 switch (hw->mac.type) {
757 case ixgbe_mac_82598EB:
758 xoff[i] = IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
bd508178 759 break;
c84d324c
JF		 760 default:
761 xoff[i] = IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
26f23d82 762 }
c84d324c
JF		 763 hwstats->pxoffrxc[i] += xoff[i];
764 }
765
766 /* disarm tx queues that have received xoff frames */
767 for (i = 0; i < adapter->num_tx_queues; i++) {
768 struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
769 u32 tc = ixgbe_dcb_txq_to_tc(adapter, tx_ring->reg_idx);
770
771 if (xoff[tc])
772 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state);
26f23d82 773 }
26f23d82
YZ		 774}
775
c84d324c 776static u64 ixgbe_get_tx_completed(struct ixgbe_ring *ring)
9a799d71 777{
c84d324c
JF		 778 return ring->tx_stats.completed;
779}
780
781static u64 ixgbe_get_tx_pending(struct ixgbe_ring *ring)
782{
783 struct ixgbe_adapter *adapter = netdev_priv(ring->netdev);
e01c31a5 784 struct ixgbe_hw *hw = &adapter->hw;
e01c31a5 785
c84d324c
JF		 786 u32 head = IXGBE_READ_REG(hw, IXGBE_TDH(ring->reg_idx));
787 u32 tail = IXGBE_READ_REG(hw, IXGBE_TDT(ring->reg_idx));
788
789 if (head != tail)
790 return (head < tail) ?
791 tail - head : (tail + ring->count - head);
792
793 return 0;
794}
795
796static inline bool ixgbe_check_tx_hang(struct ixgbe_ring *tx_ring)
797{
798 u32 tx_done = ixgbe_get_tx_completed(tx_ring);
799 u32 tx_done_old = tx_ring->tx_stats.tx_done_old;
800 u32 tx_pending = ixgbe_get_tx_pending(tx_ring);
801 bool ret = false;
802
7d637bcc 803 clear_check_for_tx_hang(tx_ring);
c84d324c
JF		 804
805 /*
806 * Check for a hung queue, but be thorough. This verifies
807 * that a transmit has been completed since the previous
808 * check AND there is at least one packet pending. The
809 * ARMED bit is set to indicate a potential hang. The
810 * bit is cleared if a pause frame is received to remove
811 * false hang detection due to PFC or 802.3x frames. By
812 * requiring this to fail twice we avoid races with
813 * pfc clearing the ARMED bit and conditions where we
814 * run the check_tx_hang logic with a transmit completion
815 * pending but without time to complete it yet.
816 */
817 if ((tx_done_old == tx_done) && tx_pending) {
818 /* make sure it is true for two checks in a row */
819 ret = test_and_set_bit(__IXGBE_HANG_CHECK_ARMED,
820 &tx_ring->state);
821 } else {
822 /* update completed stats and continue */
823 tx_ring->tx_stats.tx_done_old = tx_done;
824 /* reset the countdown */
825 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state);
9a799d71
AK		 826 }
827
c84d324c 828 return ret;
9a799d71
AK		 829}
830
b4617240
PW		 831#define IXGBE_MAX_TXD_PWR 14
832#define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
e092be60
AV		 833
834/* Tx Descriptors needed, worst case */
835#define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
836 (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
837#define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
b4617240 838 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
e092be60 839
c83c6cbd
AD		 840/**
841 * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout
842 * @adapter: driver private struct
843 **/
844static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter)
845{
846
847 /* Do the reset outside of interrupt context */
848 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
849 adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED;
850 ixgbe_service_event_schedule(adapter);
851 }
852}
e01c31a5 853
9a799d71
AK		 854/**
855 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
fe49f04a 856 * @q_vector: structure containing interrupt and ring information
e01c31a5 857 * @tx_ring: tx ring to clean
9a799d71 858 **/
fe49f04a 859static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
e8e9f696 860 struct ixgbe_ring *tx_ring)
9a799d71 861{
fe49f04a 862 struct ixgbe_adapter *adapter = q_vector->adapter;
12207e49
PWJ		 863 union ixgbe_adv_tx_desc *tx_desc, *eop_desc;
864 struct ixgbe_tx_buffer *tx_buffer_info;
e01c31a5 865 unsigned int total_bytes = 0, total_packets = 0;
b953799e 866 u16 i, eop, count = 0;
9a799d71
AK		 867
868 i = tx_ring->next_to_clean;
12207e49 869 eop = tx_ring->tx_buffer_info[i].next_to_watch;
31f05a2d 870 eop_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
12207e49
PWJ		 871
872 while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) &&
9a1a69ad 873 (count < tx_ring->work_limit)) {
12207e49 874 bool cleaned = false;
2d0bb1c1 875 rmb(); /* read buffer_info after eop_desc */
12207e49 876 for ( ; !cleaned; count++) {
31f05a2d 877 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
9a799d71 878 tx_buffer_info = &tx_ring->tx_buffer_info[i];
8ad494b0
AD		 879
880 tx_desc->wb.status = 0;
12207e49 881 cleaned = (i == eop);
9a799d71 882
8ad494b0
AD		 883 i++;
884 if (i == tx_ring->count)
885 i = 0;
e01c31a5 886
8ad494b0
AD		 887 if (cleaned && tx_buffer_info->skb) {
888 total_bytes += tx_buffer_info->bytecount;
889 total_packets += tx_buffer_info->gso_segs;
e092be60 890 }
e01c31a5 891
b6ec895e 892 ixgbe_unmap_and_free_tx_resource(tx_ring,
e8e9f696 893 tx_buffer_info);
e01c31a5 894 }
12207e49 895
c84d324c 896 tx_ring->tx_stats.completed++;
12207e49 897 eop = tx_ring->tx_buffer_info[i].next_to_watch;
31f05a2d 898 eop_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
12207e49
PWJ		 899 }
900
9a799d71 901 tx_ring->next_to_clean = i;
b953799e
AD		 902 tx_ring->total_bytes += total_bytes;
903 tx_ring->total_packets += total_packets;
904 u64_stats_update_begin(&tx_ring->syncp);
905 tx_ring->stats.packets += total_packets;
906 tx_ring->stats.bytes += total_bytes;
907 u64_stats_update_end(&tx_ring->syncp);
908
c84d324c
JF		 909 if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) {
910 /* schedule immediate reset if we believe we hung */
911 struct ixgbe_hw *hw = &adapter->hw;
912 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
913 e_err(drv, "Detected Tx Unit Hang\n"
914 " Tx Queue <%d>\n"
915 " TDH, TDT <%x>, <%x>\n"
916 " next_to_use <%x>\n"
917 " next_to_clean <%x>\n"
918 "tx_buffer_info[next_to_clean]\n"
919 " time_stamp <%lx>\n"
920 " jiffies <%lx>\n",
921 tx_ring->queue_index,
922 IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)),
923 IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)),
924 tx_ring->next_to_use, eop,
925 tx_ring->tx_buffer_info[eop].time_stamp, jiffies);
926
927 netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index);
928
929 e_info(probe,
930 "tx hang %d detected on queue %d, resetting adapter\n",
931 adapter->tx_timeout_count + 1, tx_ring->queue_index);
932
b953799e 933 /* schedule immediate reset if we believe we hung */
c83c6cbd 934 ixgbe_tx_timeout_reset(adapter);
b953799e
AD		 935
936 /* the adapter is about to reset, no point in enabling stuff */
937 return true;
938 }
9a799d71 939
e092be60 940#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
fc77dc3c 941 if (unlikely(count && netif_carrier_ok(tx_ring->netdev) &&
e8e9f696 942 (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
e092be60
AV		 943 /* Make sure that anybody stopping the queue after this
944 * sees the new next_to_clean.
945 */
946 smp_mb();
fc77dc3c 947 if (__netif_subqueue_stopped(tx_ring->netdev, tx_ring->queue_index) &&
30eba97a 948 !test_bit(__IXGBE_DOWN, &adapter->state)) {
fc77dc3c 949 netif_wake_subqueue(tx_ring->netdev, tx_ring->queue_index);
5b7da515 950 ++tx_ring->tx_stats.restart_queue;
30eba97a 951 }
e092be60 952 }
9a799d71 953
807540ba 954 return count < tx_ring->work_limit;
9a799d71
AK		 955}
956
5dd2d332 957#ifdef CONFIG_IXGBE_DCA
bd0362dd 958static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter,
33cf09c9
AD		 959 struct ixgbe_ring *rx_ring,
960 int cpu)
bd0362dd 961{
33cf09c9 962 struct ixgbe_hw *hw = &adapter->hw;
bd0362dd 963 u32 rxctrl;
33cf09c9
AD		 964 u8 reg_idx = rx_ring->reg_idx;
965
966 rxctrl = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(reg_idx));
967 switch (hw->mac.type) {
968 case ixgbe_mac_82598EB:
969 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK;
970 rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
971 break;
972 case ixgbe_mac_82599EB:
b93a2226 973 case ixgbe_mac_X540:
33cf09c9
AD		 974 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK_82599;
975 rxctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
976 IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599);
977 break;
978 default:
979 break;
bd0362dd 980 }
33cf09c9
AD		 981 rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN;
982 rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN;
983 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN);
33cf09c9 984 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(reg_idx), rxctrl);
bd0362dd
JC		 985}
986
987static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
33cf09c9
AD		 988 struct ixgbe_ring *tx_ring,
989 int cpu)
bd0362dd 990{
33cf09c9 991 struct ixgbe_hw *hw = &adapter->hw;
bd0362dd 992 u32 txctrl;
33cf09c9
AD		 993 u8 reg_idx = tx_ring->reg_idx;
994
995 switch (hw->mac.type) {
996 case ixgbe_mac_82598EB:
997 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(reg_idx));
998 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK;
999 txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
1000 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
33cf09c9
AD		 1001 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(reg_idx), txctrl);
1002 break;
1003 case ixgbe_mac_82599EB:
b93a2226 1004 case ixgbe_mac_X540:
33cf09c9
AD		 1005 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(reg_idx));
1006 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599;
1007 txctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
1008 IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599);
1009 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
33cf09c9
AD		 1010 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(reg_idx), txctrl);
1011 break;
1012 default:
1013 break;
1014 }
1015}
1016
1017static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector)
1018{
1019 struct ixgbe_adapter *adapter = q_vector->adapter;
bd0362dd 1020 int cpu = get_cpu();
33cf09c9
AD		 1021 long r_idx;
1022 int i;
bd0362dd 1023
33cf09c9
AD		 1024 if (q_vector->cpu == cpu)
1025 goto out_no_update;
1026
1027 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1028 for (i = 0; i < q_vector->txr_count; i++) {
1029 ixgbe_update_tx_dca(adapter, adapter->tx_ring[r_idx], cpu);
1030 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
1031 r_idx + 1);
bd0362dd 1032 }
33cf09c9
AD		 1033
1034 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1035 for (i = 0; i < q_vector->rxr_count; i++) {
1036 ixgbe_update_rx_dca(adapter, adapter->rx_ring[r_idx], cpu);
1037 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
1038 r_idx + 1);
1039 }
1040
1041 q_vector->cpu = cpu;
1042out_no_update:
bd0362dd
JC		 1043 put_cpu();
1044}
1045
1046static void ixgbe_setup_dca(struct ixgbe_adapter *adapter)
1047{
33cf09c9 1048 int num_q_vectors;
bd0362dd
JC		 1049 int i;
1050
1051 if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED))
1052 return;
1053
e35ec126
AD		 1054 /* always use CB2 mode, difference is masked in the CB driver */
1055 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2);
1056
33cf09c9
AD		 1057 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
1058 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1059 else
1060 num_q_vectors = 1;
1061
1062 for (i = 0; i < num_q_vectors; i++) {
1063 adapter->q_vector[i]->cpu = -1;
1064 ixgbe_update_dca(adapter->q_vector[i]);
bd0362dd
JC		 1065 }
1066}
1067
1068static int __ixgbe_notify_dca(struct device *dev, void *data)
1069{
c60fbb00 1070 struct ixgbe_adapter *adapter = dev_get_drvdata(dev);
bd0362dd
JC		 1071 unsigned long event = *(unsigned long *)data;
1072
33cf09c9
AD		 1073 if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED))
1074 return 0;
1075
bd0362dd
JC		 1076 switch (event) {
1077 case DCA_PROVIDER_ADD:
96b0e0f6
JB		 1078 /* if we're already enabled, don't do it again */
1079 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1080 break;
652f093f 1081 if (dca_add_requester(dev) == 0) {
96b0e0f6 1082 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
bd0362dd
JC		 1083 ixgbe_setup_dca(adapter);
1084 break;
1085 }
1086 /* Fall Through since DCA is disabled. */
1087 case DCA_PROVIDER_REMOVE:
1088 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
1089 dca_remove_requester(dev);
1090 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
1091 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
1092 }
1093 break;
1094 }
1095
652f093f 1096 return 0;
bd0362dd 1097}
5dd2d332 1098#endif /* CONFIG_IXGBE_DCA */
67a74ee2
ET		 1099
1100static inline void ixgbe_rx_hash(union ixgbe_adv_rx_desc *rx_desc,
1101 struct sk_buff *skb)
1102{
1103 skb->rxhash = le32_to_cpu(rx_desc->wb.lower.hi_dword.rss);
1104}
1105
9a799d71
AK		 1106/**
1107 * ixgbe_receive_skb - Send a completed packet up the stack
1108 * @adapter: board private structure
1109 * @skb: packet to send up
177db6ff
MC		 1110 * @status: hardware indication of status of receive
1111 * @rx_ring: rx descriptor ring (for a specific queue) to setup
1112 * @rx_desc: rx descriptor
9a799d71 1113 **/
78b6f4ce 1114static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector,
e8e9f696
JP		 1115 struct sk_buff *skb, u8 status,
1116 struct ixgbe_ring *ring,
1117 union ixgbe_adv_rx_desc *rx_desc)
9a799d71 1118{
78b6f4ce
HX		 1119 struct ixgbe_adapter *adapter = q_vector->adapter;
1120 struct napi_struct *napi = &q_vector->napi;
177db6ff
MC		 1121 bool is_vlan = (status & IXGBE_RXD_STAT_VP);
1122 u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
9a799d71 1123
f62bbb5e
JG		 1124 if (is_vlan && (tag & VLAN_VID_MASK))
1125 __vlan_hwaccel_put_tag(skb, tag);
1126
1127 if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL))
1128 napi_gro_receive(napi, skb);
1129 else
1130 netif_rx(skb);
9a799d71
AK		 1131}
1132
e59bd25d
AV		 1133/**
1134 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
1135 * @adapter: address of board private structure
1136 * @status_err: hardware indication of status of receive
1137 * @skb: skb currently being received and modified
1138 **/
9a799d71 1139static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter,
8bae1b2b
DS		 1140 union ixgbe_adv_rx_desc *rx_desc,
1141 struct sk_buff *skb)
9a799d71 1142{
8bae1b2b
DS		 1143 u32 status_err = le32_to_cpu(rx_desc->wb.upper.status_error);
1144
bc8acf2c 1145 skb_checksum_none_assert(skb);
9a799d71 1146
712744be
JB		 1147 /* Rx csum disabled */
1148 if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
9a799d71 1149 return;
e59bd25d
AV		 1150
1151 /* if IP and error */
1152 if ((status_err & IXGBE_RXD_STAT_IPCS) &&
1153 (status_err & IXGBE_RXDADV_ERR_IPE)) {
9a799d71
AK		 1154 adapter->hw_csum_rx_error++;
1155 return;
1156 }
e59bd25d
AV		 1157
1158 if (!(status_err & IXGBE_RXD_STAT_L4CS))
1159 return;
1160
1161 if (status_err & IXGBE_RXDADV_ERR_TCPE) {
8bae1b2b
DS		 1162 u16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
1163
1164 /*
1165 * 82599 errata, UDP frames with a 0 checksum can be marked as
1166 * checksum errors.
1167 */
1168 if ((pkt_info & IXGBE_RXDADV_PKTTYPE_UDP) &&
1169 (adapter->hw.mac.type == ixgbe_mac_82599EB))
1170 return;
1171
e59bd25d
AV		 1172 adapter->hw_csum_rx_error++;
1173 return;
1174 }
1175
9a799d71 1176 /* It must be a TCP or UDP packet with a valid checksum */
e59bd25d 1177 skb->ip_summed = CHECKSUM_UNNECESSARY;
9a799d71
AK		 1178}
1179
84ea2591 1180static inline void ixgbe_release_rx_desc(struct ixgbe_ring *rx_ring, u32 val)
e8e26350
PW		 1181{
1182 /*
1183 * Force memory writes to complete before letting h/w
1184 * know there are new descriptors to fetch. (Only
1185 * applicable for weak-ordered memory model archs,
1186 * such as IA-64).
1187 */
1188 wmb();
84ea2591 1189 writel(val, rx_ring->tail);
e8e26350
PW		 1190}
1191
9a799d71
AK		 1192/**
1193 * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split
fc77dc3c
AD		 1194 * @rx_ring: ring to place buffers on
1195 * @cleaned_count: number of buffers to replace
9a799d71 1196 **/
fc77dc3c 1197void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count)
9a799d71 1198{
9a799d71 1199 union ixgbe_adv_rx_desc *rx_desc;
3a581073 1200 struct ixgbe_rx_buffer *bi;
d5f398ed
AD		 1201 struct sk_buff *skb;
1202 u16 i = rx_ring->next_to_use;
9a799d71 1203
fc77dc3c
AD		 1204 /* do nothing if no valid netdev defined */
1205 if (!rx_ring->netdev)
1206 return;
1207
9a799d71 1208 while (cleaned_count--) {
31f05a2d 1209 rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
d5f398ed
AD		 1210 bi = &rx_ring->rx_buffer_info[i];
1211 skb = bi->skb;
9a799d71 1212
d5f398ed 1213 if (!skb) {
fc77dc3c 1214 skb = netdev_alloc_skb_ip_align(rx_ring->netdev,
d5f398ed 1215 rx_ring->rx_buf_len);
9a799d71 1216 if (!skb) {
5b7da515 1217 rx_ring->rx_stats.alloc_rx_buff_failed++;
9a799d71
AK		 1218 goto no_buffers;
1219 }
d716a7d8
AD		 1220 /* initialize queue mapping */
1221 skb_record_rx_queue(skb, rx_ring->queue_index);
d5f398ed 1222 bi->skb = skb;
d716a7d8 1223 }
9a799d71 1224
d716a7d8 1225 if (!bi->dma) {
b6ec895e 1226 bi->dma = dma_map_single(rx_ring->dev,
d5f398ed 1227 skb->data,
e8e9f696 1228 rx_ring->rx_buf_len,
1b507730 1229 DMA_FROM_DEVICE);
b6ec895e 1230 if (dma_mapping_error(rx_ring->dev, bi->dma)) {
5b7da515 1231 rx_ring->rx_stats.alloc_rx_buff_failed++;
d5f398ed
AD		 1232 bi->dma = 0;
1233 goto no_buffers;
1234 }
9a799d71 1235 }
d5f398ed 1236
7d637bcc 1237 if (ring_is_ps_enabled(rx_ring)) {
d5f398ed 1238 if (!bi->page) {
fc77dc3c 1239 bi->page = netdev_alloc_page(rx_ring->netdev);
d5f398ed 1240 if (!bi->page) {
5b7da515 1241 rx_ring->rx_stats.alloc_rx_page_failed++;
d5f398ed
AD		 1242 goto no_buffers;
1243 }
1244 }
1245
1246 if (!bi->page_dma) {
1247 /* use a half page if we're re-using */
1248 bi->page_offset ^= PAGE_SIZE / 2;
b6ec895e 1249 bi->page_dma = dma_map_page(rx_ring->dev,
d5f398ed
AD		 1250 bi->page,
1251 bi->page_offset,
1252 PAGE_SIZE / 2,
1253 DMA_FROM_DEVICE);
b6ec895e 1254 if (dma_mapping_error(rx_ring->dev,
d5f398ed 1255 bi->page_dma)) {
5b7da515 1256 rx_ring->rx_stats.alloc_rx_page_failed++;
d5f398ed
AD		 1257 bi->page_dma = 0;
1258 goto no_buffers;
1259 }
1260 }
1261
1262 /* Refresh the desc even if buffer_addrs didn't change
1263 * because each write-back erases this info. */
3a581073
JB		 1264 rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
1265 rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
9a799d71 1266 } else {
3a581073 1267 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
84418e3b 1268 rx_desc->read.hdr_addr = 0;
9a799d71
AK		 1269 }
1270
1271 i++;
1272 if (i == rx_ring->count)
1273 i = 0;
9a799d71 1274 }
7c6e0a43 1275
9a799d71
AK		 1276no_buffers:
1277 if (rx_ring->next_to_use != i) {
1278 rx_ring->next_to_use = i;
84ea2591 1279 ixgbe_release_rx_desc(rx_ring, i);
9a799d71
AK		 1280 }
1281}
1282
c267fc16 1283static inline u16 ixgbe_get_hlen(union ixgbe_adv_rx_desc *rx_desc)
7c6e0a43 1284{
c267fc16
AD		 1285 /* HW will not DMA in data larger than the given buffer, even if it
1286 * parses the (NFS, of course) header to be larger. In that case, it
1287 * fills the header buffer and spills the rest into the page.
1288 */
1289 u16 hdr_info = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info);
1290 u16 hlen = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
1291 IXGBE_RXDADV_HDRBUFLEN_SHIFT;
1292 if (hlen > IXGBE_RX_HDR_SIZE)
1293 hlen = IXGBE_RX_HDR_SIZE;
1294 return hlen;
7c6e0a43
JB		 1295}
1296
f8212f97
AD		 1297/**
1298 * ixgbe_transform_rsc_queue - change rsc queue into a full packet
1299 * @skb: pointer to the last skb in the rsc queue
1300 *
1301 * This function changes a queue full of hw rsc buffers into a completed
1302 * packet. It uses the ->prev pointers to find the first packet and then
1303 * turns it into the frag list owner.
1304 **/
aa80175a 1305static inline struct sk_buff *ixgbe_transform_rsc_queue(struct sk_buff *skb)
f8212f97
AD		 1306{
1307 unsigned int frag_list_size = 0;
aa80175a 1308 unsigned int skb_cnt = 1;
f8212f97
AD		 1309
1310 while (skb->prev) {
1311 struct sk_buff *prev = skb->prev;
1312 frag_list_size += skb->len;
1313 skb->prev = NULL;
1314 skb = prev;
aa80175a 1315 skb_cnt++;
f8212f97
AD		 1316 }
1317
1318 skb_shinfo(skb)->frag_list = skb->next;
1319 skb->next = NULL;
1320 skb->len += frag_list_size;
1321 skb->data_len += frag_list_size;
1322 skb->truesize += frag_list_size;
aa80175a
AD		 1323 IXGBE_RSC_CB(skb)->skb_cnt = skb_cnt;
1324
f8212f97
AD		 1325 return skb;
1326}
1327
aa80175a
AD		 1328static inline bool ixgbe_get_rsc_state(union ixgbe_adv_rx_desc *rx_desc)
1329{
1330 return !!(le32_to_cpu(rx_desc->wb.lower.lo_dword.data) &
1331 IXGBE_RXDADV_RSCCNT_MASK);
1332}
43634e82 1333
c267fc16 1334static void ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
e8e9f696
JP		 1335 struct ixgbe_ring *rx_ring,
1336 int *work_done, int work_to_do)
9a799d71 1337{
78b6f4ce 1338 struct ixgbe_adapter *adapter = q_vector->adapter;
9a799d71
AK		 1339 union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
1340 struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer;
1341 struct sk_buff *skb;
d2f4fbe2 1342 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
c267fc16 1343 const int current_node = numa_node_id();
3d8fd385
YZ		 1344#ifdef IXGBE_FCOE
1345 int ddp_bytes = 0;
1346#endif /* IXGBE_FCOE */
c267fc16
AD		 1347 u32 staterr;
1348 u16 i;
1349 u16 cleaned_count = 0;
aa80175a 1350 bool pkt_is_rsc = false;
9a799d71
AK		 1351
1352 i = rx_ring->next_to_clean;
31f05a2d 1353 rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
9a799d71 1354 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
9a799d71
AK		 1355
1356 while (staterr & IXGBE_RXD_STAT_DD) {
7c6e0a43 1357 u32 upper_len = 0;
9a799d71 1358
3c945e5b 1359 rmb(); /* read descriptor and rx_buffer_info after status DD */
9a799d71 1360
c267fc16
AD		 1361 rx_buffer_info = &rx_ring->rx_buffer_info[i];
1362
9a799d71 1363 skb = rx_buffer_info->skb;
9a799d71 1364 rx_buffer_info->skb = NULL;
c267fc16 1365 prefetch(skb->data);
9a799d71 1366
c267fc16 1367 if (ring_is_rsc_enabled(rx_ring))
aa80175a 1368 pkt_is_rsc = ixgbe_get_rsc_state(rx_desc);
c267fc16
AD		 1369
1370 /* if this is a skb from previous receive DMA will be 0 */
21fa4e66 1371 if (rx_buffer_info->dma) {
c267fc16 1372 u16 hlen;
aa80175a 1373 if (pkt_is_rsc &&
c267fc16
AD		 1374 !(staterr & IXGBE_RXD_STAT_EOP) &&
1375 !skb->prev) {
43634e82
MC		 1376 /*
1377 * When HWRSC is enabled, delay unmapping
1378 * of the first packet. It carries the
1379 * header information, HW may still
1380 * access the header after the writeback.
1381 * Only unmap it when EOP is reached
1382 */
e8171aaa 1383 IXGBE_RSC_CB(skb)->delay_unmap = true;
43634e82 1384 IXGBE_RSC_CB(skb)->dma = rx_buffer_info->dma;
e8171aaa 1385 } else {
b6ec895e 1386 dma_unmap_single(rx_ring->dev,
e8e9f696
JP		 1387 rx_buffer_info->dma,
1388 rx_ring->rx_buf_len,
1389 DMA_FROM_DEVICE);
e8171aaa 1390 }
4f57ca6e 1391 rx_buffer_info->dma = 0;
c267fc16
AD		 1392
1393 if (ring_is_ps_enabled(rx_ring)) {
1394 hlen = ixgbe_get_hlen(rx_desc);
1395 upper_len = le16_to_cpu(rx_desc->wb.upper.length);
1396 } else {
1397 hlen = le16_to_cpu(rx_desc->wb.upper.length);
1398 }
1399
1400 skb_put(skb, hlen);
1401 } else {
1402 /* assume packet split since header is unmapped */
1403 upper_len = le16_to_cpu(rx_desc->wb.upper.length);
9a799d71
AK		 1404 }
1405
1406 if (upper_len) {
b6ec895e
AD		 1407 dma_unmap_page(rx_ring->dev,
1408 rx_buffer_info->page_dma,
1409 PAGE_SIZE / 2,
1410 DMA_FROM_DEVICE);
9a799d71
AK		 1411 rx_buffer_info->page_dma = 0;
1412 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
e8e9f696
JP		 1413 rx_buffer_info->page,
1414 rx_buffer_info->page_offset,
1415 upper_len);
762f4c57 1416
c267fc16
AD		 1417 if ((page_count(rx_buffer_info->page) == 1) &&
1418 (page_to_nid(rx_buffer_info->page) == current_node))
762f4c57 1419 get_page(rx_buffer_info->page);
c267fc16
AD		 1420 else
1421 rx_buffer_info->page = NULL;
9a799d71
AK		 1422
1423 skb->len += upper_len;
1424 skb->data_len += upper_len;
1425 skb->truesize += upper_len;
1426 }
1427
1428 i++;
1429 if (i == rx_ring->count)
1430 i = 0;
9a799d71 1431
31f05a2d 1432 next_rxd = IXGBE_RX_DESC_ADV(rx_ring, i);
9a799d71 1433 prefetch(next_rxd);
9a799d71 1434 cleaned_count++;
f8212f97 1435
aa80175a 1436 if (pkt_is_rsc) {
f8212f97
AD		 1437 u32 nextp = (staterr & IXGBE_RXDADV_NEXTP_MASK) >>
1438 IXGBE_RXDADV_NEXTP_SHIFT;
1439 next_buffer = &rx_ring->rx_buffer_info[nextp];
f8212f97
AD		 1440 } else {
1441 next_buffer = &rx_ring->rx_buffer_info[i];
1442 }
1443
c267fc16 1444 if (!(staterr & IXGBE_RXD_STAT_EOP)) {
7d637bcc 1445 if (ring_is_ps_enabled(rx_ring)) {
f8212f97
AD		 1446 rx_buffer_info->skb = next_buffer->skb;
1447 rx_buffer_info->dma = next_buffer->dma;
1448 next_buffer->skb = skb;
1449 next_buffer->dma = 0;
1450 } else {
1451 skb->next = next_buffer->skb;
1452 skb->next->prev = skb;
1453 }
5b7da515 1454 rx_ring->rx_stats.non_eop_descs++;
9a799d71
AK		 1455 goto next_desc;
1456 }
1457
aa80175a
AD		 1458 if (skb->prev) {
1459 skb = ixgbe_transform_rsc_queue(skb);
1460 /* if we got here without RSC the packet is invalid */
1461 if (!pkt_is_rsc) {
1462 __pskb_trim(skb, 0);
1463 rx_buffer_info->skb = skb;
1464 goto next_desc;
1465 }
1466 }
c267fc16
AD		 1467
1468 if (ring_is_rsc_enabled(rx_ring)) {
1469 if (IXGBE_RSC_CB(skb)->delay_unmap) {
1470 dma_unmap_single(rx_ring->dev,
1471 IXGBE_RSC_CB(skb)->dma,
1472 rx_ring->rx_buf_len,
1473 DMA_FROM_DEVICE);
1474 IXGBE_RSC_CB(skb)->dma = 0;
1475 IXGBE_RSC_CB(skb)->delay_unmap = false;
1476 }
aa80175a
AD		 1477 }
1478 if (pkt_is_rsc) {
c267fc16
AD		 1479 if (ring_is_ps_enabled(rx_ring))
1480 rx_ring->rx_stats.rsc_count +=
aa80175a 1481 skb_shinfo(skb)->nr_frags;
c267fc16 1482 else
aa80175a
AD		 1483 rx_ring->rx_stats.rsc_count +=
1484 IXGBE_RSC_CB(skb)->skb_cnt;
c267fc16
AD		 1485 rx_ring->rx_stats.rsc_flush++;
1486 }
1487
1488 /* ERR_MASK will only have valid bits if EOP set */
9a799d71 1489 if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) {
c267fc16
AD		 1490 /* trim packet back to size 0 and recycle it */
1491 __pskb_trim(skb, 0);
1492 rx_buffer_info->skb = skb;
9a799d71
AK		 1493 goto next_desc;
1494 }
1495
8bae1b2b 1496 ixgbe_rx_checksum(adapter, rx_desc, skb);
67a74ee2
ET		 1497 if (adapter->netdev->features & NETIF_F_RXHASH)
1498 ixgbe_rx_hash(rx_desc, skb);
d2f4fbe2
AV		 1499
1500 /* probably a little skewed due to removing CRC */
1501 total_rx_bytes += skb->len;
1502 total_rx_packets++;
1503
fc77dc3c 1504 skb->protocol = eth_type_trans(skb, rx_ring->netdev);
332d4a7d
YZ		 1505#ifdef IXGBE_FCOE
1506 /* if ddp, not passing to ULD unless for FCP_RSP or error */
3d8fd385
YZ		 1507 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
1508 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb);
1509 if (!ddp_bytes)
332d4a7d 1510 goto next_desc;
3d8fd385 1511 }
332d4a7d 1512#endif /* IXGBE_FCOE */
fdaff1ce 1513 ixgbe_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
9a799d71
AK		 1514
1515next_desc:
1516 rx_desc->wb.upper.status_error = 0;
1517
c267fc16
AD		 1518 (*work_done)++;
1519 if (*work_done >= work_to_do)
1520 break;
1521
9a799d71
AK		 1522 /* return some buffers to hardware, one at a time is too slow */
1523 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) {
fc77dc3c 1524 ixgbe_alloc_rx_buffers(rx_ring, cleaned_count);
9a799d71
AK		 1525 cleaned_count = 0;
1526 }
1527
1528 /* use prefetched values */
1529 rx_desc = next_rxd;
9a799d71 1530 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
177db6ff
MC		 1531 }
1532
9a799d71
AK		 1533 rx_ring->next_to_clean = i;
1534 cleaned_count = IXGBE_DESC_UNUSED(rx_ring);
1535
1536 if (cleaned_count)
fc77dc3c 1537 ixgbe_alloc_rx_buffers(rx_ring, cleaned_count);
9a799d71 1538
3d8fd385
YZ		 1539#ifdef IXGBE_FCOE
1540 /* include DDPed FCoE data */
1541 if (ddp_bytes > 0) {
1542 unsigned int mss;
1543
fc77dc3c 1544 mss = rx_ring->netdev->mtu - sizeof(struct fcoe_hdr) -
3d8fd385
YZ		 1545 sizeof(struct fc_frame_header) -
1546 sizeof(struct fcoe_crc_eof);
1547 if (mss > 512)
1548 mss &= ~511;
1549 total_rx_bytes += ddp_bytes;
1550 total_rx_packets += DIV_ROUND_UP(ddp_bytes, mss);
1551 }
1552#endif /* IXGBE_FCOE */
1553
f494e8fa
AV		 1554 rx_ring->total_packets += total_rx_packets;
1555 rx_ring->total_bytes += total_rx_bytes;
c267fc16
AD		 1556 u64_stats_update_begin(&rx_ring->syncp);
1557 rx_ring->stats.packets += total_rx_packets;
1558 rx_ring->stats.bytes += total_rx_bytes;
1559 u64_stats_update_end(&rx_ring->syncp);
9a799d71
AK		 1560}
1561
021230d4 1562static int ixgbe_clean_rxonly(struct napi_struct *, int);
9a799d71
AK		 1563/**
1564 * ixgbe_configure_msix - Configure MSI-X hardware
1565 * @adapter: board private structure
1566 *
1567 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
1568 * interrupts.
1569 **/
1570static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
1571{
021230d4 1572 struct ixgbe_q_vector *q_vector;
bf29ee6c 1573 int i, q_vectors, v_idx, r_idx;
021230d4 1574 u32 mask;
9a799d71 1575
021230d4 1576 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
9a799d71 1577
4df10466
JB		 1578 /*
1579 * Populate the IVAR table and set the ITR values to the
021230d4
AV		 1580 * corresponding register.
1581 */
1582 for (v_idx = 0; v_idx < q_vectors; v_idx++) {
7a921c93 1583 q_vector = adapter->q_vector[v_idx];
984b3f57 1584 /* XXX for_each_set_bit(...) */
021230d4 1585 r_idx = find_first_bit(q_vector->rxr_idx,
e8e9f696 1586 adapter->num_rx_queues);
021230d4
AV		 1587
1588 for (i = 0; i < q_vector->rxr_count; i++) {
bf29ee6c
AD		 1589 u8 reg_idx = adapter->rx_ring[r_idx]->reg_idx;
1590 ixgbe_set_ivar(adapter, 0, reg_idx, v_idx);
021230d4 1591 r_idx = find_next_bit(q_vector->rxr_idx,
e8e9f696
JP		 1592 adapter->num_rx_queues,
1593 r_idx + 1);
021230d4
AV		 1594 }
1595 r_idx = find_first_bit(q_vector->txr_idx,
e8e9f696 1596 adapter->num_tx_queues);
021230d4
AV		 1597
1598 for (i = 0; i < q_vector->txr_count; i++) {
bf29ee6c
AD		 1599 u8 reg_idx = adapter->tx_ring[r_idx]->reg_idx;
1600 ixgbe_set_ivar(adapter, 1, reg_idx, v_idx);
021230d4 1601 r_idx = find_next_bit(q_vector->txr_idx,
e8e9f696
JP		 1602 adapter->num_tx_queues,
1603 r_idx + 1);
021230d4
AV		 1604 }
1605
021230d4 1606 if (q_vector->txr_count && !q_vector->rxr_count)
f7554a2b
NS		 1607 /* tx only */
1608 q_vector->eitr = adapter->tx_eitr_param;
509ee935 1609 else if (q_vector->rxr_count)
f7554a2b
NS		 1610 /* rx or mixed */
1611 q_vector->eitr = adapter->rx_eitr_param;
021230d4 1612
fe49f04a 1613 ixgbe_write_eitr(q_vector);
b25ebfd2
PW		 1614 /* If Flow Director is enabled, set interrupt affinity */
1615 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
1616 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) {
1617 /*
1618 * Allocate the affinity_hint cpumask, assign the mask
1619 * for this vector, and set our affinity_hint for
1620 * this irq.
1621 */
1622 if (!alloc_cpumask_var(&q_vector->affinity_mask,
1623 GFP_KERNEL))
1624 return;
1625 cpumask_set_cpu(v_idx, q_vector->affinity_mask);
1626 irq_set_affinity_hint(adapter->msix_entries[v_idx].vector,
1627 q_vector->affinity_mask);
1628 }
9a799d71
AK		 1629 }
1630
bd508178
AD		 1631 switch (adapter->hw.mac.type) {
1632 case ixgbe_mac_82598EB:
e8e26350 1633 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX,
e8e9f696 1634 v_idx);
bd508178
AD		 1635 break;
1636 case ixgbe_mac_82599EB:
b93a2226 1637 case ixgbe_mac_X540:
e8e26350 1638 ixgbe_set_ivar(adapter, -1, 1, v_idx);
bd508178
AD		 1639 break;
1640
1641 default:
1642 break;
1643 }
021230d4
AV		 1644 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
1645
41fb9248 1646 /* set up to autoclear timer, and the vectors */
021230d4 1647 mask = IXGBE_EIMS_ENABLE_MASK;
1cdd1ec8
GR		 1648 if (adapter->num_vfs)
1649 mask &= ~(IXGBE_EIMS_OTHER |
1650 IXGBE_EIMS_MAILBOX |
1651 IXGBE_EIMS_LSC);
1652 else
1653 mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC);
021230d4 1654 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask);
9a799d71
AK		 1655}
1656
f494e8fa
AV		 1657enum latency_range {
1658 lowest_latency = 0,
1659 low_latency = 1,
1660 bulk_latency = 2,
1661 latency_invalid = 255
1662};
1663
1664/**
1665 * ixgbe_update_itr - update the dynamic ITR value based on statistics
1666 * @adapter: pointer to adapter
1667 * @eitr: eitr setting (ints per sec) to give last timeslice
1668 * @itr_setting: current throttle rate in ints/second
1669 * @packets: the number of packets during this measurement interval
1670 * @bytes: the number of bytes during this measurement interval
1671 *
1672 * Stores a new ITR value based on packets and byte
1673 * counts during the last interrupt. The advantage of per interrupt
1674 * computation is faster updates and more accurate ITR for the current
1675 * traffic pattern. Constants in this function were computed
1676 * based on theoretical maximum wire speed and thresholds were set based
1677 * on testing data as well as attempting to minimize response time
1678 * while increasing bulk throughput.
1679 * this functionality is controlled by the InterruptThrottleRate module
1680 * parameter (see ixgbe_param.c)
1681 **/
1682static u8 ixgbe_update_itr(struct ixgbe_adapter *adapter,
e8e9f696
JP		 1683 u32 eitr, u8 itr_setting,
1684 int packets, int bytes)
f494e8fa
AV		 1685{
1686 unsigned int retval = itr_setting;
1687 u32 timepassed_us;
1688 u64 bytes_perint;
1689
1690 if (packets == 0)
1691 goto update_itr_done;
1692
1693
1694 /* simple throttlerate management
1695 * 0-20MB/s lowest (100000 ints/s)
1696 * 20-100MB/s low (20000 ints/s)
1697 * 100-1249MB/s bulk (8000 ints/s)
1698 */
1699 /* what was last interrupt timeslice? */
1700 timepassed_us = 1000000/eitr;
1701 bytes_perint = bytes / timepassed_us; /* bytes/usec */
1702
1703 switch (itr_setting) {
1704 case lowest_latency:
1705 if (bytes_perint > adapter->eitr_low)
1706 retval = low_latency;
1707 break;
1708 case low_latency:
1709 if (bytes_perint > adapter->eitr_high)
1710 retval = bulk_latency;
1711 else if (bytes_perint <= adapter->eitr_low)
1712 retval = lowest_latency;
1713 break;
1714 case bulk_latency:
1715 if (bytes_perint <= adapter->eitr_high)
1716 retval = low_latency;
1717 break;
1718 }
1719
1720update_itr_done:
1721 return retval;
1722}
1723
509ee935
JB		 1724/**
1725 * ixgbe_write_eitr - write EITR register in hardware specific way
fe49f04a 1726 * @q_vector: structure containing interrupt and ring information
509ee935
JB		 1727 *
1728 * This function is made to be called by ethtool and by the driver
1729 * when it needs to update EITR registers at runtime. Hardware
1730 * specific quirks/differences are taken care of here.
1731 */
fe49f04a 1732void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector)
509ee935 1733{
fe49f04a 1734 struct ixgbe_adapter *adapter = q_vector->adapter;
509ee935 1735 struct ixgbe_hw *hw = &adapter->hw;
fe49f04a
AD		 1736 int v_idx = q_vector->v_idx;
1737 u32 itr_reg = EITR_INTS_PER_SEC_TO_REG(q_vector->eitr);
1738
bd508178
AD		 1739 switch (adapter->hw.mac.type) {
1740 case ixgbe_mac_82598EB:
509ee935
JB		 1741 /* must write high and low 16 bits to reset counter */
1742 itr_reg |= (itr_reg << 16);
bd508178
AD		 1743 break;
1744 case ixgbe_mac_82599EB:
b93a2226 1745 case ixgbe_mac_X540:
f8d1dcaf 1746 /*
b93a2226 1747 * 82599 and X540 can support a value of zero, so allow it for
f8d1dcaf
JB		 1748 * max interrupt rate, but there is an errata where it can
1749 * not be zero with RSC
1750 */
1751 if (itr_reg == 8 &&
1752 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
1753 itr_reg = 0;
1754
509ee935
JB		 1755 /*
1756 * set the WDIS bit to not clear the timer bits and cause an
1757 * immediate assertion of the interrupt
1758 */
1759 itr_reg |= IXGBE_EITR_CNT_WDIS;
bd508178
AD		 1760 break;
1761 default:
1762 break;
509ee935
JB		 1763 }
1764 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg);
1765}
1766
f494e8fa
AV		 1767static void ixgbe_set_itr_msix(struct ixgbe_q_vector *q_vector)
1768{
1769 struct ixgbe_adapter *adapter = q_vector->adapter;
125601bf 1770 int i, r_idx;
f494e8fa
AV		 1771 u32 new_itr;
1772 u8 current_itr, ret_itr;
f494e8fa
AV		 1773
1774 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1775 for (i = 0; i < q_vector->txr_count; i++) {
125601bf 1776 struct ixgbe_ring *tx_ring = adapter->tx_ring[r_idx];
f494e8fa 1777 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
e8e9f696
JP		 1778 q_vector->tx_itr,
1779 tx_ring->total_packets,
1780 tx_ring->total_bytes);
f494e8fa
AV		 1781 /* if the result for this queue would decrease interrupt
1782 * rate for this vector then use that result */
30efa5a3 1783 q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ?
e8e9f696 1784 q_vector->tx_itr - 1 : ret_itr);
f494e8fa 1785 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
e8e9f696 1786 r_idx + 1);
f494e8fa
AV		 1787 }
1788
1789 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1790 for (i = 0; i < q_vector->rxr_count; i++) {
125601bf 1791 struct ixgbe_ring *rx_ring = adapter->rx_ring[r_idx];
f494e8fa 1792 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
e8e9f696
JP		 1793 q_vector->rx_itr,
1794 rx_ring->total_packets,
1795 rx_ring->total_bytes);
f494e8fa
AV		 1796 /* if the result for this queue would decrease interrupt
1797 * rate for this vector then use that result */
30efa5a3 1798 q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ?
e8e9f696 1799 q_vector->rx_itr - 1 : ret_itr);
f494e8fa 1800 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
e8e9f696 1801 r_idx + 1);
f494e8fa
AV		 1802 }
1803
30efa5a3 1804 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
f494e8fa
AV		 1805
1806 switch (current_itr) {
1807 /* counts and packets in update_itr are dependent on these numbers */
1808 case lowest_latency:
1809 new_itr = 100000;
1810 break;
1811 case low_latency:
1812 new_itr = 20000; /* aka hwitr = ~200 */
1813 break;
1814 case bulk_latency:
1815 default:
1816 new_itr = 8000;
1817 break;
1818 }
1819
1820 if (new_itr != q_vector->eitr) {
fe49f04a 1821 /* do an exponential smoothing */
125601bf 1822 new_itr = ((q_vector->eitr * 9) + new_itr)/10;
509ee935
JB		 1823
1824 /* save the algorithm value here, not the smoothed one */
1825 q_vector->eitr = new_itr;
fe49f04a
AD		 1826
1827 ixgbe_write_eitr(q_vector);
f494e8fa 1828 }
f494e8fa
AV		 1829}
1830
119fc60a 1831/**
f0f9778d
AD		 1832 * ixgbe_check_overtemp_subtask - check for over tempurature
1833 * @adapter: pointer to adapter
119fc60a 1834 **/
f0f9778d 1835static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter *adapter)
119fc60a 1836{
119fc60a
MC		 1837 struct ixgbe_hw *hw = &adapter->hw;
1838 u32 eicr = adapter->interrupt_event;
1839
f0f9778d 1840 if (test_bit(__IXGBE_DOWN, &adapter->state))
7ca647bd
JP		 1841 return;
1842
f0f9778d
AD		 1843 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
1844 !(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_EVENT))
1845 return;
1846
1847 adapter->flags2 &= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT;
1848
7ca647bd 1849 switch (hw->device_id) {
f0f9778d
AD		 1850 case IXGBE_DEV_ID_82599_T3_LOM:
1851 /*
1852 * Since the warning interrupt is for both ports
1853 * we don't have to check if:
1854 * - This interrupt wasn't for our port.
1855 * - We may have missed the interrupt so always have to
1856 * check if we got a LSC
1857 */
1858 if (!(eicr & IXGBE_EICR_GPI_SDP0) &&
1859 !(eicr & IXGBE_EICR_LSC))
1860 return;
1861
1862 if (!(eicr & IXGBE_EICR_LSC) && hw->mac.ops.check_link) {
1863 u32 autoneg;
1864 bool link_up = false;
7ca647bd 1865
7ca647bd
JP		 1866 hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
1867
f0f9778d
AD		 1868 if (link_up)
1869 return;
1870 }
1871
1872 /* Check if this is not due to overtemp */
1873 if (hw->phy.ops.check_overtemp(hw) != IXGBE_ERR_OVERTEMP)
1874 return;
1875
1876 break;
7ca647bd
JP		 1877 default:
1878 if (!(eicr & IXGBE_EICR_GPI_SDP0))
119fc60a 1879 return;
7ca647bd 1880 break;
119fc60a 1881 }
7ca647bd
JP		 1882 e_crit(drv,
1883 "Network adapter has been stopped because it has over heated. "
1884 "Restart the computer. If the problem persists, "
1885 "power off the system and replace the adapter\n");
f0f9778d
AD		 1886
1887 adapter->interrupt_event = 0;
119fc60a
MC		 1888}
1889
0befdb3e
JB		 1890static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
1891{
1892 struct ixgbe_hw *hw = &adapter->hw;
1893
1894 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) &&
1895 (eicr & IXGBE_EICR_GPI_SDP1)) {
396e799c 1896 e_crit(probe, "Fan has stopped, replace the adapter\n");
0befdb3e
JB		 1897 /* write to clear the interrupt */
1898 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
1899 }
1900}
cf8280ee 1901
e8e26350
PW		 1902static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr)
1903{
1904 struct ixgbe_hw *hw = &adapter->hw;
1905
73c4b7cd
AD		 1906 if (eicr & IXGBE_EICR_GPI_SDP2) {
1907 /* Clear the interrupt */
1908 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP2);
7086400d
AD		 1909 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
1910 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
1911 ixgbe_service_event_schedule(adapter);
1912 }
73c4b7cd
AD		 1913 }
1914
e8e26350
PW		 1915 if (eicr & IXGBE_EICR_GPI_SDP1) {
1916 /* Clear the interrupt */
1917 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
7086400d
AD		 1918 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
1919 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG;
1920 ixgbe_service_event_schedule(adapter);
1921 }
e8e26350
PW		 1922 }
1923}
1924
cf8280ee
JB		 1925static void ixgbe_check_lsc(struct ixgbe_adapter *adapter)
1926{
1927 struct ixgbe_hw *hw = &adapter->hw;
1928
1929 adapter->lsc_int++;
1930 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
1931 adapter->link_check_timeout = jiffies;
1932 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
1933 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC);
8a0717f3 1934 IXGBE_WRITE_FLUSH(hw);
93c52dd0 1935 ixgbe_service_event_schedule(adapter);
cf8280ee
JB		 1936 }
1937}
1938
9a799d71
AK		 1939static irqreturn_t ixgbe_msix_lsc(int irq, void *data)
1940{
1941 struct net_device *netdev = data;
1942 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1943 struct ixgbe_hw *hw = &adapter->hw;
54037505
DS		 1944 u32 eicr;
1945
1946 /*
1947 * Workaround for Silicon errata. Use clear-by-write instead
1948 * of clear-by-read. Reading with EICS will return the
1949 * interrupt causes without clearing, which later be done
1950 * with the write to EICR.
1951 */
1952 eicr = IXGBE_READ_REG(hw, IXGBE_EICS);
1953 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr);
9a799d71 1954
cf8280ee
JB		 1955 if (eicr & IXGBE_EICR_LSC)
1956 ixgbe_check_lsc(adapter);
d4f80882 1957
1cdd1ec8
GR		 1958 if (eicr & IXGBE_EICR_MAILBOX)
1959 ixgbe_msg_task(adapter);
1960
bd508178
AD		 1961 switch (hw->mac.type) {
1962 case ixgbe_mac_82599EB:
b93a2226 1963 case ixgbe_mac_X540:
c4cf55e5
PWJ		 1964 /* Handle Flow Director Full threshold interrupt */
1965 if (eicr & IXGBE_EICR_FLOW_DIR) {
d034acf1 1966 int reinit_count = 0;
c4cf55e5 1967 int i;
c4cf55e5 1968 for (i = 0; i < adapter->num_tx_queues; i++) {
d034acf1 1969 struct ixgbe_ring *ring = adapter->tx_ring[i];
7d637bcc 1970 if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE,
d034acf1
AD		 1971 &ring->state))
1972 reinit_count++;
1973 }
1974 if (reinit_count) {
1975 /* no more flow director interrupts until after init */
1976 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_FLOW_DIR);
1977 eicr &= ~IXGBE_EICR_FLOW_DIR;
1978 adapter->flags2 |= IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
1979 ixgbe_service_event_schedule(adapter);
c4cf55e5
PWJ		 1980 }
1981 }
f0f9778d
AD		 1982 ixgbe_check_sfp_event(adapter, eicr);
1983 if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
1984 ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC))) {
1985 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
1986 adapter->interrupt_event = eicr;
1987 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT;
1988 ixgbe_service_event_schedule(adapter);
c4cf55e5
PWJ		 1989 }
1990 }
bd508178
AD		 1991 break;
1992 default:
1993 break;
c4cf55e5 1994 }
bd508178
AD		 1995
1996 ixgbe_check_fan_failure(adapter, eicr);
1997
7086400d 1998 /* re-enable the original interrupt state, no lsc, no queues */
d4f80882 1999 if (!test_bit(__IXGBE_DOWN, &adapter->state))
7086400d
AD		 2000 IXGBE_WRITE_REG(hw, IXGBE_EIMS, eicr &
2001 ~(IXGBE_EIMS_LSC | IXGBE_EIMS_RTX_QUEUE));
9a799d71
AK		 2002
2003 return IRQ_HANDLED;
2004}
2005
fe49f04a
AD		 2006static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter,
2007 u64 qmask)
2008{
2009 u32 mask;
bd508178 2010 struct ixgbe_hw *hw = &adapter->hw;
fe49f04a 2011
bd508178
AD		 2012 switch (hw->mac.type) {
2013 case ixgbe_mac_82598EB:
fe49f04a 2014 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
bd508178
AD		 2015 IXGBE_WRITE_REG(hw, IXGBE_EIMS, mask);
2016 break;
2017 case ixgbe_mac_82599EB:
b93a2226 2018 case ixgbe_mac_X540:
fe49f04a 2019 mask = (qmask & 0xFFFFFFFF);
bd508178
AD		 2020 if (mask)
2021 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask);
fe49f04a 2022 mask = (qmask >> 32);
bd508178
AD		 2023 if (mask)
2024 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask);
2025 break;
2026 default:
2027 break;
fe49f04a
AD		 2028 }
2029 /* skip the flush */
2030}
2031
2032static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter,
e8e9f696 2033 u64 qmask)
fe49f04a
AD		 2034{
2035 u32 mask;
bd508178 2036 struct ixgbe_hw *hw = &adapter->hw;
fe49f04a 2037
bd508178
AD		 2038 switch (hw->mac.type) {
2039 case ixgbe_mac_82598EB:
fe49f04a 2040 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
bd508178
AD		 2041 IXGBE_WRITE_REG(hw, IXGBE_EIMC, mask);
2042 break;
2043 case ixgbe_mac_82599EB:
b93a2226 2044 case ixgbe_mac_X540:
fe49f04a 2045 mask = (qmask & 0xFFFFFFFF);
bd508178
AD		 2046 if (mask)
2047 IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(0), mask);
fe49f04a 2048 mask = (qmask >> 32);
bd508178
AD		 2049 if (mask)
2050 IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(1), mask);
2051 break;
2052 default:
2053 break;
fe49f04a
AD		 2054 }
2055 /* skip the flush */
2056}
2057
9a799d71
AK		 2058static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data)
2059{
021230d4
AV		 2060 struct ixgbe_q_vector *q_vector = data;
2061 struct ixgbe_adapter *adapter = q_vector->adapter;
3a581073 2062 struct ixgbe_ring *tx_ring;
021230d4
AV		 2063 int i, r_idx;
2064
2065 if (!q_vector->txr_count)
2066 return IRQ_HANDLED;
2067
2068 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
2069 for (i = 0; i < q_vector->txr_count; i++) {
4a0b9ca0 2070 tx_ring = adapter->tx_ring[r_idx];
3a581073
JB		 2071 tx_ring->total_bytes = 0;
2072 tx_ring->total_packets = 0;
021230d4 2073 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
e8e9f696 2074 r_idx + 1);
021230d4 2075 }
9a799d71 2076
9b471446 2077 /* EIAM disabled interrupts (on this vector) for us */
91281fd3
AD		 2078 napi_schedule(&q_vector->napi);
2079
9a799d71
AK		 2080 return IRQ_HANDLED;
2081}
2082
021230d4
AV		 2083/**
2084 * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
2085 * @irq: unused
2086 * @data: pointer to our q_vector struct for this interrupt vector
2087 **/
9a799d71
AK		 2088static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data)
2089{
021230d4
AV		 2090 struct ixgbe_q_vector *q_vector = data;
2091 struct ixgbe_adapter *adapter = q_vector->adapter;
3a581073 2092 struct ixgbe_ring *rx_ring;
021230d4 2093 int r_idx;
30efa5a3 2094 int i;
021230d4 2095
33cf09c9
AD		 2096#ifdef CONFIG_IXGBE_DCA
2097 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
2098 ixgbe_update_dca(q_vector);
2099#endif
2100
021230d4 2101 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
33cf09c9 2102 for (i = 0; i < q_vector->rxr_count; i++) {
4a0b9ca0 2103 rx_ring = adapter->rx_ring[r_idx];
30efa5a3
JB		 2104 rx_ring->total_bytes = 0;
2105 rx_ring->total_packets = 0;
2106 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
e8e9f696 2107 r_idx + 1);
30efa5a3
JB		 2108 }
2109
021230d4
AV		 2110 if (!q_vector->rxr_count)
2111 return IRQ_HANDLED;
2112
9b471446 2113 /* EIAM disabled interrupts (on this vector) for us */
288379f0 2114 napi_schedule(&q_vector->napi);
021230d4
AV		 2115
2116 return IRQ_HANDLED;
2117}
2118
2119static irqreturn_t ixgbe_msix_clean_many(int irq, void *data)
2120{
91281fd3
AD		 2121 struct ixgbe_q_vector *q_vector = data;
2122 struct ixgbe_adapter *adapter = q_vector->adapter;
2123 struct ixgbe_ring *ring;
2124 int r_idx;
2125 int i;
2126
2127 if (!q_vector->txr_count && !q_vector->rxr_count)
2128 return IRQ_HANDLED;
2129
2130 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
2131 for (i = 0; i < q_vector->txr_count; i++) {
4a0b9ca0 2132 ring = adapter->tx_ring[r_idx];
91281fd3
AD		 2133 ring->total_bytes = 0;
2134 ring->total_packets = 0;
2135 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
e8e9f696 2136 r_idx + 1);
91281fd3
AD		 2137 }
2138
2139 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
2140 for (i = 0; i < q_vector->rxr_count; i++) {
4a0b9ca0 2141 ring = adapter->rx_ring[r_idx];
91281fd3
AD		 2142 ring->total_bytes = 0;
2143 ring->total_packets = 0;
2144 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
e8e9f696 2145 r_idx + 1);
91281fd3
AD		 2146 }
2147
9b471446 2148 /* EIAM disabled interrupts (on this vector) for us */
91281fd3 2149 napi_schedule(&q_vector->napi);
9a799d71 2150
9a799d71
AK		 2151 return IRQ_HANDLED;
2152}
2153
021230d4
AV		 2154/**
2155 * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine
2156 * @napi: napi struct with our devices info in it
2157 * @budget: amount of work driver is allowed to do this pass, in packets
2158 *
f0848276
JB		 2159 * This function is optimized for cleaning one queue only on a single
2160 * q_vector!!!
021230d4 2161 **/
9a799d71
AK		 2162static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget)
2163{
021230d4 2164 struct ixgbe_q_vector *q_vector =
e8e9f696 2165 container_of(napi, struct ixgbe_q_vector, napi);
021230d4 2166 struct ixgbe_adapter *adapter = q_vector->adapter;
f0848276 2167 struct ixgbe_ring *rx_ring = NULL;
9a799d71 2168 int work_done = 0;
021230d4 2169 long r_idx;
9a799d71 2170
5dd2d332 2171#ifdef CONFIG_IXGBE_DCA
bd0362dd 2172 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
33cf09c9 2173 ixgbe_update_dca(q_vector);
bd0362dd 2174#endif
9a799d71 2175
33cf09c9
AD		 2176 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
2177 rx_ring = adapter->rx_ring[r_idx];
2178
78b6f4ce 2179 ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
9a799d71 2180
021230d4
AV		 2181 /* If all Rx work done, exit the polling mode */
2182 if (work_done < budget) {
288379f0 2183 napi_complete(napi);
f7554a2b 2184 if (adapter->rx_itr_setting & 1)
f494e8fa 2185 ixgbe_set_itr_msix(q_vector);
9a799d71 2186 if (!test_bit(__IXGBE_DOWN, &adapter->state))
fe49f04a 2187 ixgbe_irq_enable_queues(adapter,
e8e9f696 2188 ((u64)1 << q_vector->v_idx));
9a799d71
AK		 2189 }
2190
2191 return work_done;
2192}
2193
f0848276 2194/**
91281fd3 2195 * ixgbe_clean_rxtx_many - msix (aka one shot) rx clean routine
f0848276
JB		 2196 * @napi: napi struct with our devices info in it
2197 * @budget: amount of work driver is allowed to do this pass, in packets
2198 *
2199 * This function will clean more than one rx queue associated with a
2200 * q_vector.
2201 **/
91281fd3 2202static int ixgbe_clean_rxtx_many(struct napi_struct *napi, int budget)
f0848276
JB		 2203{
2204 struct ixgbe_q_vector *q_vector =
e8e9f696 2205 container_of(napi, struct ixgbe_q_vector, napi);
f0848276 2206 struct ixgbe_adapter *adapter = q_vector->adapter;
91281fd3 2207 struct ixgbe_ring *ring = NULL;
f0848276
JB		 2208 int work_done = 0, i;
2209 long r_idx;
91281fd3
AD		 2210 bool tx_clean_complete = true;
2211
33cf09c9
AD		 2212#ifdef CONFIG_IXGBE_DCA
2213 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
2214 ixgbe_update_dca(q_vector);
2215#endif
2216
91281fd3
AD		 2217 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
2218 for (i = 0; i < q_vector->txr_count; i++) {
4a0b9ca0 2219 ring = adapter->tx_ring[r_idx];
91281fd3
AD		 2220 tx_clean_complete &= ixgbe_clean_tx_irq(q_vector, ring);
2221 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
e8e9f696 2222 r_idx + 1);
91281fd3 2223 }
f0848276
JB		 2224
2225 /* attempt to distribute budget to each queue fairly, but don't allow
2226 * the budget to go below 1 because we'll exit polling */
2227 budget /= (q_vector->rxr_count ?: 1);
2228 budget = max(budget, 1);
2229 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
2230 for (i = 0; i < q_vector->rxr_count; i++) {
4a0b9ca0 2231 ring = adapter->rx_ring[r_idx];
91281fd3 2232 ixgbe_clean_rx_irq(q_vector, ring, &work_done, budget);
f0848276 2233 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
e8e9f696 2234 r_idx + 1);
f0848276
JB		 2235 }
2236
2237 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
4a0b9ca0 2238 ring = adapter->rx_ring[r_idx];
f0848276 2239 /* If all Rx work done, exit the polling mode */
7f821875 2240 if (work_done < budget) {
288379f0 2241 napi_complete(napi);
f7554a2b 2242 if (adapter->rx_itr_setting & 1)
f0848276
JB		 2243 ixgbe_set_itr_msix(q_vector);
2244 if (!test_bit(__IXGBE_DOWN, &adapter->state))
fe49f04a 2245 ixgbe_irq_enable_queues(adapter,
e8e9f696 2246 ((u64)1 << q_vector->v_idx));
f0848276
JB		 2247 return 0;
2248 }
2249
2250 return work_done;
2251}
91281fd3
AD		 2252
2253/**
2254 * ixgbe_clean_txonly - msix (aka one shot) tx clean routine
2255 * @napi: napi struct with our devices info in it
2256 * @budget: amount of work driver is allowed to do this pass, in packets
2257 *
2258 * This function is optimized for cleaning one queue only on a single
2259 * q_vector!!!
2260 **/
2261static int ixgbe_clean_txonly(struct napi_struct *napi, int budget)
2262{
2263 struct ixgbe_q_vector *q_vector =
e8e9f696 2264 container_of(napi, struct ixgbe_q_vector, napi);
91281fd3
AD		 2265 struct ixgbe_adapter *adapter = q_vector->adapter;
2266 struct ixgbe_ring *tx_ring = NULL;
2267 int work_done = 0;
2268 long r_idx;
2269
91281fd3
AD		 2270#ifdef CONFIG_IXGBE_DCA
2271 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
33cf09c9 2272 ixgbe_update_dca(q_vector);
91281fd3
AD		 2273#endif
2274
33cf09c9
AD		 2275 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
2276 tx_ring = adapter->tx_ring[r_idx];
2277
91281fd3
AD		 2278 if (!ixgbe_clean_tx_irq(q_vector, tx_ring))
2279 work_done = budget;
2280
f7554a2b 2281 /* If all Tx work done, exit the polling mode */
91281fd3
AD		 2282 if (work_done < budget) {
2283 napi_complete(napi);
f7554a2b 2284 if (adapter->tx_itr_setting & 1)
91281fd3
AD		 2285 ixgbe_set_itr_msix(q_vector);
2286 if (!test_bit(__IXGBE_DOWN, &adapter->state))
e8e9f696
JP		 2287 ixgbe_irq_enable_queues(adapter,
2288 ((u64)1 << q_vector->v_idx));
91281fd3
AD		 2289 }
2290
2291 return work_done;
2292}
2293
021230d4 2294static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx,
e8e9f696 2295 int r_idx)
021230d4 2296{
7a921c93 2297 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
2274543f 2298 struct ixgbe_ring *rx_ring = a->rx_ring[r_idx];
7a921c93
AD		 2299
2300 set_bit(r_idx, q_vector->rxr_idx);
2301 q_vector->rxr_count++;
2274543f 2302 rx_ring->q_vector = q_vector;
021230d4
AV		 2303}
2304
2305static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx,
e8e9f696 2306 int t_idx)
021230d4 2307{
7a921c93 2308 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
2274543f 2309 struct ixgbe_ring *tx_ring = a->tx_ring[t_idx];
7a921c93
AD		 2310
2311 set_bit(t_idx, q_vector->txr_idx);
2312 q_vector->txr_count++;
2274543f 2313 tx_ring->q_vector = q_vector;
021230d4
AV		 2314}
2315
9a799d71 2316/**
021230d4
AV		 2317 * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors
2318 * @adapter: board private structure to initialize
9a799d71 2319 *
021230d4
AV		 2320 * This function maps descriptor rings to the queue-specific vectors
2321 * we were allotted through the MSI-X enabling code. Ideally, we'd have
2322 * one vector per ring/queue, but on a constrained vector budget, we
2323 * group the rings as "efficiently" as possible. You would add new
2324 * mapping configurations in here.
9a799d71 2325 **/
d0759ebb 2326static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter)
021230d4 2327{
d0759ebb 2328 int q_vectors;
021230d4
AV		 2329 int v_start = 0;
2330 int rxr_idx = 0, txr_idx = 0;
2331 int rxr_remaining = adapter->num_rx_queues;
2332 int txr_remaining = adapter->num_tx_queues;
2333 int i, j;
2334 int rqpv, tqpv;
2335 int err = 0;
2336
2337 /* No mapping required if MSI-X is disabled. */
2338 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
2339 goto out;
9a799d71 2340
d0759ebb
AD		 2341 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2342
021230d4
AV		 2343 /*
2344 * The ideal configuration...
2345 * We have enough vectors to map one per queue.
2346 */
d0759ebb 2347 if (q_vectors == adapter->num_rx_queues + adapter->num_tx_queues) {
021230d4
AV		 2348 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
2349 map_vector_to_rxq(adapter, v_start, rxr_idx);
9a799d71 2350
021230d4
AV		 2351 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
2352 map_vector_to_txq(adapter, v_start, txr_idx);
9a799d71 2353
9a799d71 2354 goto out;
021230d4 2355 }
9a799d71 2356
021230d4
AV		 2357 /*
2358 * If we don't have enough vectors for a 1-to-1
2359 * mapping, we'll have to group them so there are
2360 * multiple queues per vector.
2361 */
2362 /* Re-adjusting *qpv takes care of the remainder. */
d0759ebb
AD		 2363 for (i = v_start; i < q_vectors; i++) {
2364 rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i);
021230d4
AV		 2365 for (j = 0; j < rqpv; j++) {
2366 map_vector_to_rxq(adapter, i, rxr_idx);
2367 rxr_idx++;
2368 rxr_remaining--;
2369 }
d0759ebb 2370 tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i);
021230d4
AV		 2371 for (j = 0; j < tqpv; j++) {
2372 map_vector_to_txq(adapter, i, txr_idx);
2373 txr_idx++;
2374 txr_remaining--;
9a799d71 2375 }
9a799d71 2376 }
021230d4
AV		 2377out:
2378 return err;
2379}
2380
2381/**
2382 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
2383 * @adapter: board private structure
2384 *
2385 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
2386 * interrupts from the kernel.
2387 **/
2388static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
2389{
2390 struct net_device *netdev = adapter->netdev;
2391 irqreturn_t (*handler)(int, void *);
2392 int i, vector, q_vectors, err;
e8e9f696 2393 int ri = 0, ti = 0;
021230d4
AV		 2394
2395 /* Decrement for Other and TCP Timer vectors */
2396 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2397
d0759ebb 2398 err = ixgbe_map_rings_to_vectors(adapter);
021230d4 2399 if (err)
d0759ebb 2400 return err;
021230d4 2401
d0759ebb
AD		 2402#define SET_HANDLER(_v) (((_v)->rxr_count && (_v)->txr_count) \
2403 ? &ixgbe_msix_clean_many : \
2404 (_v)->rxr_count ? &ixgbe_msix_clean_rx : \
2405 (_v)->txr_count ? &ixgbe_msix_clean_tx : \
2406 NULL)
021230d4 2407 for (vector = 0; vector < q_vectors; vector++) {
d0759ebb
AD		 2408 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector];
2409 handler = SET_HANDLER(q_vector);
cb13fc20 2410
e8e9f696 2411 if (handler == &ixgbe_msix_clean_rx) {
9fe93afd
DS		 2412 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2413 "%s-%s-%d", netdev->name, "rx", ri++);
e8e9f696 2414 } else if (handler == &ixgbe_msix_clean_tx) {
9fe93afd
DS		 2415 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2416 "%s-%s-%d", netdev->name, "tx", ti++);
d0759ebb 2417 } else if (handler == &ixgbe_msix_clean_many) {
9fe93afd
DS		 2418 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2419 "%s-%s-%d", netdev->name, "TxRx", ri++);
32aa77a4 2420 ti++;
d0759ebb
AD		 2421 } else {
2422 /* skip this unused q_vector */
2423 continue;
32aa77a4 2424 }
021230d4 2425 err = request_irq(adapter->msix_entries[vector].vector,
d0759ebb
AD		 2426 handler, 0, q_vector->name,
2427 q_vector);
9a799d71 2428 if (err) {
396e799c 2429 e_err(probe, "request_irq failed for MSIX interrupt "
849c4542 2430 "Error: %d\n", err);
021230d4 2431 goto free_queue_irqs;
9a799d71 2432 }
9a799d71
AK		 2433 }
2434
d0759ebb 2435 sprintf(adapter->lsc_int_name, "%s:lsc", netdev->name);
021230d4 2436 err = request_irq(adapter->msix_entries[vector].vector,
d0759ebb 2437 ixgbe_msix_lsc, 0, adapter->lsc_int_name, netdev);
9a799d71 2438 if (err) {
396e799c 2439 e_err(probe, "request_irq for msix_lsc failed: %d\n", err);
021230d4 2440 goto free_queue_irqs;
9a799d71
AK		 2441 }
2442
9a799d71
AK		 2443 return 0;
2444
021230d4
AV		 2445free_queue_irqs:
2446 for (i = vector - 1; i >= 0; i--)
2447 free_irq(adapter->msix_entries[--vector].vector,
e8e9f696 2448 adapter->q_vector[i]);
021230d4
AV		 2449 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
2450 pci_disable_msix(adapter->pdev);
9a799d71
AK		 2451 kfree(adapter->msix_entries);
2452 adapter->msix_entries = NULL;
9a799d71
AK		 2453 return err;
2454}
2455
f494e8fa
AV		 2456static void ixgbe_set_itr(struct ixgbe_adapter *adapter)
2457{
7a921c93 2458 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
4a0b9ca0
PW		 2459 struct ixgbe_ring *rx_ring = adapter->rx_ring[0];
2460 struct ixgbe_ring *tx_ring = adapter->tx_ring[0];
125601bf
AD		 2461 u32 new_itr = q_vector->eitr;
2462 u8 current_itr;
f494e8fa 2463
30efa5a3 2464 q_vector->tx_itr = ixgbe_update_itr(adapter, new_itr,
e8e9f696
JP		 2465 q_vector->tx_itr,
2466 tx_ring->total_packets,
2467 tx_ring->total_bytes);
30efa5a3 2468 q_vector->rx_itr = ixgbe_update_itr(adapter, new_itr,
e8e9f696
JP		 2469 q_vector->rx_itr,
2470 rx_ring->total_packets,
2471 rx_ring->total_bytes);
f494e8fa 2472
30efa5a3 2473 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
f494e8fa
AV		 2474
2475 switch (current_itr) {
2476 /* counts and packets in update_itr are dependent on these numbers */
2477 case lowest_latency:
2478 new_itr = 100000;
2479 break;
2480 case low_latency:
2481 new_itr = 20000; /* aka hwitr = ~200 */
2482 break;
2483 case bulk_latency:
2484 new_itr = 8000;
2485 break;
2486 default:
2487 break;
2488 }
2489
2490 if (new_itr != q_vector->eitr) {
fe49f04a 2491 /* do an exponential smoothing */
125601bf 2492 new_itr = ((q_vector->eitr * 9) + new_itr)/10;
509ee935 2493
125601bf 2494 /* save the algorithm value here */
509ee935 2495 q_vector->eitr = new_itr;
fe49f04a
AD		 2496
2497 ixgbe_write_eitr(q_vector);
f494e8fa 2498 }
f494e8fa
AV		 2499}
2500
79aefa45
AD		 2501/**
2502 * ixgbe_irq_enable - Enable default interrupt generation settings
2503 * @adapter: board private structure
2504 **/
6af3b9eb
ET		 2505static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues,
2506 bool flush)
79aefa45
AD		 2507{
2508 u32 mask;
835462fc
NS		 2509
2510 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
119fc60a
MC		 2511 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
2512 mask |= IXGBE_EIMS_GPI_SDP0;
6ab33d51
DM		 2513 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
2514 mask |= IXGBE_EIMS_GPI_SDP1;
bd508178
AD		 2515 switch (adapter->hw.mac.type) {
2516 case ixgbe_mac_82599EB:
b93a2226 2517 case ixgbe_mac_X540:
2a41ff81 2518 mask |= IXGBE_EIMS_ECC;
e8e26350
PW		 2519 mask |= IXGBE_EIMS_GPI_SDP1;
2520 mask |= IXGBE_EIMS_GPI_SDP2;
1cdd1ec8
GR		 2521 if (adapter->num_vfs)
2522 mask |= IXGBE_EIMS_MAILBOX;
bd508178
AD		 2523 break;
2524 default:
2525 break;
e8e26350 2526 }
c4cf55e5
PWJ		 2527 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
2528 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
2529 mask |= IXGBE_EIMS_FLOW_DIR;
e8e26350 2530
79aefa45 2531 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
6af3b9eb
ET		 2532 if (queues)
2533 ixgbe_irq_enable_queues(adapter, ~0);
2534 if (flush)
2535 IXGBE_WRITE_FLUSH(&adapter->hw);
1cdd1ec8
GR		 2536
2537 if (adapter->num_vfs > 32) {
2538 u32 eitrsel = (1 << (adapter->num_vfs - 32)) - 1;
2539 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel);
2540 }
79aefa45 2541}
021230d4 2542
9a799d71 2543/**
021230d4 2544 * ixgbe_intr - legacy mode Interrupt Handler
9a799d71
AK		 2545 * @irq: interrupt number
2546 * @data: pointer to a network interface device structure
9a799d71
AK		 2547 **/
2548static irqreturn_t ixgbe_intr(int irq, void *data)
2549{
2550 struct net_device *netdev = data;
2551 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2552 struct ixgbe_hw *hw = &adapter->hw;
7a921c93 2553 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
9a799d71
AK		 2554 u32 eicr;
2555
54037505 2556 /*
6af3b9eb 2557 * Workaround for silicon errata on 82598. Mask the interrupts
54037505
DS		 2558 * before the read of EICR.
2559 */
2560 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
2561
021230d4
AV		 2562 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
2563 * therefore no explict interrupt disable is necessary */
2564 eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
f47cf66e 2565 if (!eicr) {
6af3b9eb
ET		 2566 /*
2567 * shared interrupt alert!
f47cf66e 2568 * make sure interrupts are enabled because the read will
6af3b9eb
ET		 2569 * have disabled interrupts due to EIAM
2570 * finish the workaround of silicon errata on 82598. Unmask
2571 * the interrupt that we masked before the EICR read.
2572 */
2573 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2574 ixgbe_irq_enable(adapter, true, true);
9a799d71 2575 return IRQ_NONE; /* Not our interrupt */
f47cf66e 2576 }
9a799d71 2577
cf8280ee
JB		 2578 if (eicr & IXGBE_EICR_LSC)
2579 ixgbe_check_lsc(adapter);
021230d4 2580
bd508178
AD		 2581 switch (hw->mac.type) {
2582 case ixgbe_mac_82599EB:
e8e26350 2583 ixgbe_check_sfp_event(adapter, eicr);
bd508178
AD		 2584 if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
2585 ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC))) {
f0f9778d
AD		 2586 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
2587 adapter->interrupt_event = eicr;
2588 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT;
2589 ixgbe_service_event_schedule(adapter);
2590 }
bd508178
AD		 2591 }
2592 break;
2593 default:
2594 break;
2595 }
e8e26350 2596
0befdb3e
JB		 2597 ixgbe_check_fan_failure(adapter, eicr);
2598
7a921c93 2599 if (napi_schedule_prep(&(q_vector->napi))) {
4a0b9ca0
PW		 2600 adapter->tx_ring[0]->total_packets = 0;
2601 adapter->tx_ring[0]->total_bytes = 0;
2602 adapter->rx_ring[0]->total_packets = 0;
2603 adapter->rx_ring[0]->total_bytes = 0;
021230d4 2604 /* would disable interrupts here but EIAM disabled it */
7a921c93 2605 __napi_schedule(&(q_vector->napi));
9a799d71
AK		 2606 }
2607
6af3b9eb
ET		 2608 /*
2609 * re-enable link(maybe) and non-queue interrupts, no flush.
2610 * ixgbe_poll will re-enable the queue interrupts
2611 */
2612
2613 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2614 ixgbe_irq_enable(adapter, false, false);
2615
9a799d71
AK		 2616 return IRQ_HANDLED;
2617}
2618
021230d4
AV		 2619static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter)
2620{
2621 int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2622
2623 for (i = 0; i < q_vectors; i++) {
7a921c93 2624 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
021230d4
AV		 2625 bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES);
2626 bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES);
2627 q_vector->rxr_count = 0;
2628 q_vector->txr_count = 0;
2629 }
2630}
2631
9a799d71
AK		 2632/**
2633 * ixgbe_request_irq - initialize interrupts
2634 * @adapter: board private structure
2635 *
2636 * Attempts to configure interrupts using the best available
2637 * capabilities of the hardware and kernel.
2638 **/
021230d4 2639static int ixgbe_request_irq(struct ixgbe_adapter *adapter)
9a799d71
AK		 2640{
2641 struct net_device *netdev = adapter->netdev;
021230d4 2642 int err;
9a799d71 2643
021230d4
AV		 2644 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2645 err = ixgbe_request_msix_irqs(adapter);
2646 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
a0607fd3 2647 err = request_irq(adapter->pdev->irq, ixgbe_intr, 0,
e8e9f696 2648 netdev->name, netdev);
021230d4 2649 } else {
a0607fd3 2650 err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED,
e8e9f696 2651 netdev->name, netdev);
9a799d71
AK		 2652 }
2653
9a799d71 2654 if (err)
396e799c 2655 e_err(probe, "request_irq failed, Error %d\n", err);
9a799d71 2656
9a799d71
AK		 2657 return err;
2658}
2659
2660static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
2661{
2662 struct net_device *netdev = adapter->netdev;
2663
2664 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
021230d4 2665 int i, q_vectors;
9a799d71 2666
021230d4
AV		 2667 q_vectors = adapter->num_msix_vectors;
2668
2669 i = q_vectors - 1;
9a799d71 2670 free_irq(adapter->msix_entries[i].vector, netdev);
9a799d71 2671
021230d4
AV		 2672 i--;
2673 for (; i >= 0; i--) {
894ff7cf
AD		 2674 /* free only the irqs that were actually requested */
2675 if (!adapter->q_vector[i]->rxr_count &&
2676 !adapter->q_vector[i]->txr_count)
2677 continue;
2678
021230d4 2679 free_irq(adapter->msix_entries[i].vector,
e8e9f696 2680 adapter->q_vector[i]);
021230d4
AV		 2681 }
2682
2683 ixgbe_reset_q_vectors(adapter);
2684 } else {
2685 free_irq(adapter->pdev->irq, netdev);
9a799d71
AK		 2686 }
2687}
2688
22d5a71b
JB		 2689/**
2690 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
2691 * @adapter: board private structure
2692 **/
2693static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
2694{
bd508178
AD		 2695 switch (adapter->hw.mac.type) {
2696 case ixgbe_mac_82598EB:
835462fc 2697 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
bd508178
AD		 2698 break;
2699 case ixgbe_mac_82599EB:
b93a2226 2700 case ixgbe_mac_X540:
835462fc
NS		 2701 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000);
2702 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0);
22d5a71b 2703 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0);
1cdd1ec8
GR		 2704 if (adapter->num_vfs > 32)
2705 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0);
bd508178
AD		 2706 break;
2707 default:
2708 break;
22d5a71b
JB		 2709 }
2710 IXGBE_WRITE_FLUSH(&adapter->hw);
2711 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2712 int i;
2713 for (i = 0; i < adapter->num_msix_vectors; i++)
2714 synchronize_irq(adapter->msix_entries[i].vector);
2715 } else {
2716 synchronize_irq(adapter->pdev->irq);
2717 }
2718}
2719
9a799d71
AK		 2720/**
2721 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
2722 *
2723 **/
2724static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
2725{
9a799d71
AK		 2726 struct ixgbe_hw *hw = &adapter->hw;
2727
021230d4 2728 IXGBE_WRITE_REG(hw, IXGBE_EITR(0),
e8e9f696 2729 EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr_param));
9a799d71 2730
e8e26350
PW		 2731 ixgbe_set_ivar(adapter, 0, 0, 0);
2732 ixgbe_set_ivar(adapter, 1, 0, 0);
021230d4
AV		 2733
2734 map_vector_to_rxq(adapter, 0, 0);
2735 map_vector_to_txq(adapter, 0, 0);
2736
396e799c 2737 e_info(hw, "Legacy interrupt IVAR setup done\n");
9a799d71
AK		 2738}
2739
43e69bf0
AD		 2740/**
2741 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset
2742 * @adapter: board private structure
2743 * @ring: structure containing ring specific data
2744 *
2745 * Configure the Tx descriptor ring after a reset.
2746 **/
84418e3b
AD		 2747void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter,
2748 struct ixgbe_ring *ring)
43e69bf0
AD		 2749{
2750 struct ixgbe_hw *hw = &adapter->hw;
2751 u64 tdba = ring->dma;
2f1860b8
AD		 2752 int wait_loop = 10;
2753 u32 txdctl;
bf29ee6c 2754 u8 reg_idx = ring->reg_idx;
43e69bf0 2755
2f1860b8
AD		 2756 /* disable queue to avoid issues while updating state */
2757 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
2758 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx),
2759 txdctl & ~IXGBE_TXDCTL_ENABLE);
2760 IXGBE_WRITE_FLUSH(hw);
2761
43e69bf0 2762 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx),
e8e9f696 2763 (tdba & DMA_BIT_MASK(32)));
43e69bf0
AD		 2764 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32));
2765 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx),
2766 ring->count * sizeof(union ixgbe_adv_tx_desc));
2767 IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0);
2768 IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0);
84ea2591 2769 ring->tail = hw->hw_addr + IXGBE_TDT(reg_idx);
43e69bf0 2770
2f1860b8
AD		 2771 /* configure fetching thresholds */
2772 if (adapter->rx_itr_setting == 0) {
2773 /* cannot set wthresh when itr==0 */
2774 txdctl &= ~0x007F0000;
2775 } else {
2776 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
2777 txdctl |= (8 << 16);
2778 }
2779 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
2780 /* PThresh workaround for Tx hang with DFP enabled. */
2781 txdctl |= 32;
2782 }
2783
2784 /* reinitialize flowdirector state */
ee9e0f0b
AD		 2785 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) &&
2786 adapter->atr_sample_rate) {
2787 ring->atr_sample_rate = adapter->atr_sample_rate;
2788 ring->atr_count = 0;
2789 set_bit(__IXGBE_TX_FDIR_INIT_DONE, &ring->state);
2790 } else {
2791 ring->atr_sample_rate = 0;
2792 }
2f1860b8 2793
c84d324c
JF		 2794 clear_bit(__IXGBE_HANG_CHECK_ARMED, &ring->state);
2795
2f1860b8
AD		 2796 /* enable queue */
2797 txdctl |= IXGBE_TXDCTL_ENABLE;
2798 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl);
2799
2800 /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */
2801 if (hw->mac.type == ixgbe_mac_82598EB &&
2802 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
2803 return;
2804
2805 /* poll to verify queue is enabled */
2806 do {
032b4325 2807 usleep_range(1000, 2000);
2f1860b8
AD		 2808 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
2809 } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE));
2810 if (!wait_loop)
2811 e_err(drv, "Could not enable Tx Queue %d\n", reg_idx);
43e69bf0
AD		 2812}
2813
120ff942
AD		 2814static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
2815{
2816 struct ixgbe_hw *hw = &adapter->hw;
2817 u32 rttdcs;
2818 u32 mask;
72a32f1f 2819 u32 reg;
120ff942
AD		 2820
2821 if (hw->mac.type == ixgbe_mac_82598EB)
2822 return;
2823
2824 /* disable the arbiter while setting MTQC */
2825 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
2826 rttdcs |= IXGBE_RTTDCS_ARBDIS;
2827 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
2828
2829 /* set transmit pool layout */
2830 mask = (IXGBE_FLAG_SRIOV_ENABLED | IXGBE_FLAG_DCB_ENABLED);
2831 switch (adapter->flags & mask) {
2832
2833 case (IXGBE_FLAG_SRIOV_ENABLED):
2834 IXGBE_WRITE_REG(hw, IXGBE_MTQC,
2835 (IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF));
2836 break;
2837
2838 case (IXGBE_FLAG_DCB_ENABLED):
2839 /* We enable 8 traffic classes, DCB only */
2840 IXGBE_WRITE_REG(hw, IXGBE_MTQC,
2841 (IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ));
72a32f1f
JF		 2842
2843 /* Enable Security TX Buffer IFG for DCB */
2844 reg = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG);
2845 reg |= IXGBE_SECTX_DCB;
2846 IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, reg);
2847
120ff942
AD		 2848 break;
2849
2850 default:
2851 IXGBE_WRITE_REG(hw, IXGBE_MTQC, IXGBE_MTQC_64Q_1PB);
2852 break;
2853 }
2854
2855 /* re-enable the arbiter */
2856 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
2857 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
2858}
2859
9a799d71 2860/**
3a581073 2861 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
9a799d71
AK		 2862 * @adapter: board private structure
2863 *
2864 * Configure the Tx unit of the MAC after a reset.
2865 **/
2866static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
2867{
2f1860b8
AD		 2868 struct ixgbe_hw *hw = &adapter->hw;
2869 u32 dmatxctl;
43e69bf0 2870 u32 i;
9a799d71 2871
2f1860b8
AD		 2872 ixgbe_setup_mtqc(adapter);
2873
2874 if (hw->mac.type != ixgbe_mac_82598EB) {
2875 /* DMATXCTL.EN must be before Tx queues are enabled */
2876 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
2877 dmatxctl |= IXGBE_DMATXCTL_TE;
2878 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
2879 }
2880
9a799d71 2881 /* Setup the HW Tx Head and Tail descriptor pointers */
43e69bf0
AD		 2882 for (i = 0; i < adapter->num_tx_queues; i++)
2883 ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]);
9a799d71
AK		 2884}
2885
e8e26350 2886#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
cc41ac7c 2887
a6616b42 2888static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter,
e8e9f696 2889 struct ixgbe_ring *rx_ring)
cc41ac7c 2890{
cc41ac7c 2891 u32 srrctl;
bf29ee6c 2892 u8 reg_idx = rx_ring->reg_idx;
3be1adfb 2893
bd508178
AD		 2894 switch (adapter->hw.mac.type) {
2895 case ixgbe_mac_82598EB: {
2896 struct ixgbe_ring_feature *feature = adapter->ring_feature;
2897 const int mask = feature[RING_F_RSS].mask;
bf29ee6c 2898 reg_idx = reg_idx & mask;
cc41ac7c 2899 }
bd508178
AD		 2900 break;
2901 case ixgbe_mac_82599EB:
b93a2226 2902 case ixgbe_mac_X540:
bd508178
AD		 2903 default:
2904 break;
2905 }
2906
bf29ee6c 2907 srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(reg_idx));
cc41ac7c
JB		 2908
2909 srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK;
2910 srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK;
9e10e045
AD		 2911 if (adapter->num_vfs)
2912 srrctl |= IXGBE_SRRCTL_DROP_EN;
cc41ac7c 2913
afafd5b0
AD		 2914 srrctl |= (IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
2915 IXGBE_SRRCTL_BSIZEHDR_MASK;
2916
7d637bcc 2917 if (ring_is_ps_enabled(rx_ring)) {
afafd5b0
AD		 2918#if (PAGE_SIZE / 2) > IXGBE_MAX_RXBUFFER
2919 srrctl |= IXGBE_MAX_RXBUFFER >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2920#else
2921 srrctl |= (PAGE_SIZE / 2) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2922#endif
cc41ac7c 2923 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
cc41ac7c 2924 } else {
afafd5b0
AD		 2925 srrctl |= ALIGN(rx_ring->rx_buf_len, 1024) >>
2926 IXGBE_SRRCTL_BSIZEPKT_SHIFT;
cc41ac7c 2927 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
cc41ac7c 2928 }
e8e26350 2929
bf29ee6c 2930 IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(reg_idx), srrctl);
cc41ac7c 2931}
9a799d71 2932
05abb126 2933static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
0cefafad 2934{
05abb126
AD		 2935 struct ixgbe_hw *hw = &adapter->hw;
2936 static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D,
e8e9f696
JP		 2937 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE,
2938 0x6A3E67EA, 0x14364D17, 0x3BED200D};
05abb126
AD		 2939 u32 mrqc = 0, reta = 0;
2940 u32 rxcsum;
2941 int i, j;
0cefafad
JB		 2942 int mask;
2943
05abb126
AD		 2944 /* Fill out hash function seeds */
2945 for (i = 0; i < 10; i++)
2946 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]);
2947
2948 /* Fill out redirection table */
2949 for (i = 0, j = 0; i < 128; i++, j++) {
2950 if (j == adapter->ring_feature[RING_F_RSS].indices)
2951 j = 0;
2952 /* reta = 4-byte sliding window of
2953 * 0x00..(indices-1)(indices-1)00..etc. */
2954 reta = (reta << 8) | (j * 0x11);
2955 if ((i & 3) == 3)
2956 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
2957 }
0cefafad 2958
05abb126
AD		 2959 /* Disable indicating checksum in descriptor, enables RSS hash */
2960 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
2961 rxcsum |= IXGBE_RXCSUM_PCSD;
2962 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
2963
2964 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
2965 mask = adapter->flags & IXGBE_FLAG_RSS_ENABLED;
2966 else
2967 mask = adapter->flags & (IXGBE_FLAG_RSS_ENABLED
0cefafad 2968#ifdef CONFIG_IXGBE_DCB
05abb126 2969 | IXGBE_FLAG_DCB_ENABLED
0cefafad 2970#endif
05abb126
AD		 2971 | IXGBE_FLAG_SRIOV_ENABLED
2972 );
0cefafad
JB		 2973
2974 switch (mask) {
8187cd48
JF		 2975#ifdef CONFIG_IXGBE_DCB
2976 case (IXGBE_FLAG_DCB_ENABLED | IXGBE_FLAG_RSS_ENABLED):
2977 mrqc = IXGBE_MRQC_RTRSS8TCEN;
2978 break;
2979 case (IXGBE_FLAG_DCB_ENABLED):
2980 mrqc = IXGBE_MRQC_RT8TCEN;
2981 break;
2982#endif /* CONFIG_IXGBE_DCB */
0cefafad
JB		 2983 case (IXGBE_FLAG_RSS_ENABLED):
2984 mrqc = IXGBE_MRQC_RSSEN;
2985 break;
1cdd1ec8
GR		 2986 case (IXGBE_FLAG_SRIOV_ENABLED):
2987 mrqc = IXGBE_MRQC_VMDQEN;
2988 break;
0cefafad
JB		 2989 default:
2990 break;
2991 }
2992
05abb126
AD		 2993 /* Perform hash on these packet types */
2994 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4
2995 | IXGBE_MRQC_RSS_FIELD_IPV4_TCP
2996 | IXGBE_MRQC_RSS_FIELD_IPV6
2997 | IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
2998
2999 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
0cefafad
JB		 3000}
3001
b93a2226
DS		 3002/**
3003 * ixgbe_clear_rscctl - disable RSC for the indicated ring
3004 * @adapter: address of board private structure
3005 * @ring: structure containing ring specific data
3006 **/
3007void ixgbe_clear_rscctl(struct ixgbe_adapter *adapter,
3008 struct ixgbe_ring *ring)
3009{
3010 struct ixgbe_hw *hw = &adapter->hw;
3011 u32 rscctrl;
3012 u8 reg_idx = ring->reg_idx;
3013
3014 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx));
3015 rscctrl &= ~IXGBE_RSCCTL_RSCEN;
3016 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl);
3017}
3018
bb5a9ad2
NS		 3019/**
3020 * ixgbe_configure_rscctl - enable RSC for the indicated ring
3021 * @adapter: address of board private structure
3022 * @index: index of ring to set
bb5a9ad2 3023 **/
b93a2226 3024void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter,
7367096a 3025 struct ixgbe_ring *ring)
bb5a9ad2 3026{
bb5a9ad2 3027 struct ixgbe_hw *hw = &adapter->hw;
bb5a9ad2 3028 u32 rscctrl;
edd2ea55 3029 int rx_buf_len;
bf29ee6c 3030 u8 reg_idx = ring->reg_idx;
7367096a 3031
7d637bcc 3032 if (!ring_is_rsc_enabled(ring))
7367096a 3033 return;
bb5a9ad2 3034
7367096a
AD		 3035 rx_buf_len = ring->rx_buf_len;
3036 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx));
bb5a9ad2
NS		 3037 rscctrl |= IXGBE_RSCCTL_RSCEN;
3038 /*
3039 * we must limit the number of descriptors so that the
3040 * total size of max desc * buf_len is not greater
3041 * than 65535
3042 */
7d637bcc 3043 if (ring_is_ps_enabled(ring)) {
bb5a9ad2
NS		 3044#if (MAX_SKB_FRAGS > 16)
3045 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
3046#elif (MAX_SKB_FRAGS > 8)
3047 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
3048#elif (MAX_SKB_FRAGS > 4)
3049 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
3050#else
3051 rscctrl |= IXGBE_RSCCTL_MAXDESC_1;
3052#endif
3053 } else {
3054 if (rx_buf_len < IXGBE_RXBUFFER_4096)
3055 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
3056 else if (rx_buf_len < IXGBE_RXBUFFER_8192)
3057 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
3058 else
3059 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
3060 }
7367096a 3061 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl);
bb5a9ad2
NS		 3062}
3063
9e10e045
AD		 3064/**
3065 * ixgbe_set_uta - Set unicast filter table address
3066 * @adapter: board private structure
3067 *
3068 * The unicast table address is a register array of 32-bit registers.
3069 * The table is meant to be used in a way similar to how the MTA is used
3070 * however due to certain limitations in the hardware it is necessary to
3071 * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous
3072 * enable bit to allow vlan tag stripping when promiscuous mode is enabled
3073 **/
3074static void ixgbe_set_uta(struct ixgbe_adapter *adapter)
3075{
3076 struct ixgbe_hw *hw = &adapter->hw;
3077 int i;
3078
3079 /* The UTA table only exists on 82599 hardware and newer */
3080 if (hw->mac.type < ixgbe_mac_82599EB)
3081 return;
3082
3083 /* we only need to do this if VMDq is enabled */
3084 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
3085 return;
3086
3087 for (i = 0; i < 128; i++)
3088 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), ~0);
3089}
3090
3091#define IXGBE_MAX_RX_DESC_POLL 10
3092static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter,
3093 struct ixgbe_ring *ring)
3094{
3095 struct ixgbe_hw *hw = &adapter->hw;
9e10e045
AD		 3096 int wait_loop = IXGBE_MAX_RX_DESC_POLL;
3097 u32 rxdctl;
bf29ee6c 3098 u8 reg_idx = ring->reg_idx;
9e10e045
AD		 3099
3100 /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */
3101 if (hw->mac.type == ixgbe_mac_82598EB &&
3102 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
3103 return;
3104
3105 do {
032b4325 3106 usleep_range(1000, 2000);
9e10e045
AD		 3107 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
3108 } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE));
3109
3110 if (!wait_loop) {
3111 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within "
3112 "the polling period\n", reg_idx);
3113 }
3114}
3115
2d39d576
YZ		 3116void ixgbe_disable_rx_queue(struct ixgbe_adapter *adapter,
3117 struct ixgbe_ring *ring)
3118{
3119 struct ixgbe_hw *hw = &adapter->hw;
3120 int wait_loop = IXGBE_MAX_RX_DESC_POLL;
3121 u32 rxdctl;
3122 u8 reg_idx = ring->reg_idx;
3123
3124 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
3125 rxdctl &= ~IXGBE_RXDCTL_ENABLE;
3126
3127 /* write value back with RXDCTL.ENABLE bit cleared */
3128 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
3129
3130 if (hw->mac.type == ixgbe_mac_82598EB &&
3131 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
3132 return;
3133
3134 /* the hardware may take up to 100us to really disable the rx queue */
3135 do {
3136 udelay(10);
3137 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
3138 } while (--wait_loop && (rxdctl & IXGBE_RXDCTL_ENABLE));
3139
3140 if (!wait_loop) {
3141 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not cleared within "
3142 "the polling period\n", reg_idx);
3143 }
3144}
3145
84418e3b
AD		 3146void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
3147 struct ixgbe_ring *ring)
acd37177
AD		 3148{
3149 struct ixgbe_hw *hw = &adapter->hw;
3150 u64 rdba = ring->dma;
9e10e045 3151 u32 rxdctl;
bf29ee6c 3152 u8 reg_idx = ring->reg_idx;
acd37177 3153
9e10e045
AD		 3154 /* disable queue to avoid issues while updating state */
3155 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
2d39d576 3156 ixgbe_disable_rx_queue(adapter, ring);
9e10e045 3157
acd37177
AD		 3158 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32)));
3159 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32));
3160 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx),
3161 ring->count * sizeof(union ixgbe_adv_rx_desc));
3162 IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0);
3163 IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0);
84ea2591 3164 ring->tail = hw->hw_addr + IXGBE_RDT(reg_idx);
9e10e045
AD		 3165
3166 ixgbe_configure_srrctl(adapter, ring);
3167 ixgbe_configure_rscctl(adapter, ring);
3168
e9f98072
GR		 3169 /* If operating in IOV mode set RLPML for X540 */
3170 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) &&
3171 hw->mac.type == ixgbe_mac_X540) {
3172 rxdctl &= ~IXGBE_RXDCTL_RLPMLMASK;
3173 rxdctl |= ((ring->netdev->mtu + ETH_HLEN +
3174 ETH_FCS_LEN + VLAN_HLEN) | IXGBE_RXDCTL_RLPML_EN);
3175 }
3176
9e10e045
AD		 3177 if (hw->mac.type == ixgbe_mac_82598EB) {
3178 /*
3179 * enable cache line friendly hardware writes:
3180 * PTHRESH=32 descriptors (half the internal cache),
3181 * this also removes ugly rx_no_buffer_count increment
3182 * HTHRESH=4 descriptors (to minimize latency on fetch)
3183 * WTHRESH=8 burst writeback up to two cache lines
3184 */
3185 rxdctl &= ~0x3FFFFF;
3186 rxdctl |= 0x080420;
3187 }
3188
3189 /* enable receive descriptor ring */
3190 rxdctl |= IXGBE_RXDCTL_ENABLE;
3191 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
3192
3193 ixgbe_rx_desc_queue_enable(adapter, ring);
fc77dc3c 3194 ixgbe_alloc_rx_buffers(ring, IXGBE_DESC_UNUSED(ring));
acd37177
AD		 3195}
3196
48654521
AD		 3197static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter)
3198{
3199 struct ixgbe_hw *hw = &adapter->hw;
3200 int p;
3201
3202 /* PSRTYPE must be initialized in non 82598 adapters */
3203 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
e8e9f696
JP		 3204 IXGBE_PSRTYPE_UDPHDR |
3205 IXGBE_PSRTYPE_IPV4HDR |
48654521 3206 IXGBE_PSRTYPE_L2HDR |
e8e9f696 3207 IXGBE_PSRTYPE_IPV6HDR;
48654521
AD		 3208
3209 if (hw->mac.type == ixgbe_mac_82598EB)
3210 return;
3211
3212 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED)
3213 psrtype |= (adapter->num_rx_queues_per_pool << 29);
3214
3215 for (p = 0; p < adapter->num_rx_pools; p++)
3216 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(adapter->num_vfs + p),
3217 psrtype);
3218}
3219
f5b4a52e
AD		 3220static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter)
3221{
3222 struct ixgbe_hw *hw = &adapter->hw;
3223 u32 gcr_ext;
3224 u32 vt_reg_bits;
3225 u32 reg_offset, vf_shift;
3226 u32 vmdctl;
3227
3228 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
3229 return;
3230
3231 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
3232 vt_reg_bits = IXGBE_VMD_CTL_VMDQ_EN | IXGBE_VT_CTL_REPLEN;
3233 vt_reg_bits |= (adapter->num_vfs << IXGBE_VT_CTL_POOL_SHIFT);
3234 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl | vt_reg_bits);
3235
3236 vf_shift = adapter->num_vfs % 32;
3237 reg_offset = (adapter->num_vfs > 32) ? 1 : 0;
3238
3239 /* Enable only the PF's pool for Tx/Rx */
3240 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), (1 << vf_shift));
3241 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), 0);
3242 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), (1 << vf_shift));
3243 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), 0);
3244 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
3245
3246 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */
3247 hw->mac.ops.set_vmdq(hw, 0, adapter->num_vfs);
3248
3249 /*
3250 * Set up VF register offsets for selected VT Mode,
3251 * i.e. 32 or 64 VFs for SR-IOV
3252 */
3253 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
3254 gcr_ext |= IXGBE_GCR_EXT_MSIX_EN;
3255 gcr_ext |= IXGBE_GCR_EXT_VT_MODE_64;
3256 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
3257
3258 /* enable Tx loopback for VF/PF communication */
3259 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
a985b6c3 3260 /* Enable MAC Anti-Spoofing */
a1cbb15c
GR		 3261 hw->mac.ops.set_mac_anti_spoofing(hw,
3262 (adapter->antispoofing_enabled =
3263 (adapter->num_vfs != 0)),
a985b6c3 3264 adapter->num_vfs);
f5b4a52e
AD		 3265}
3266
477de6ed 3267static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter)
9a799d71 3268{
9a799d71
AK		 3269 struct ixgbe_hw *hw = &adapter->hw;
3270 struct net_device *netdev = adapter->netdev;
3271 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
7c6e0a43 3272 int rx_buf_len;
477de6ed
AD		 3273 struct ixgbe_ring *rx_ring;
3274 int i;
3275 u32 mhadd, hlreg0;
48654521 3276
9a799d71 3277 /* Decide whether to use packet split mode or not */
a124339a
DS		 3278 /* On by default */
3279 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
3280
1cdd1ec8 3281 /* Do not use packet split if we're in SR-IOV Mode */
a124339a
DS		 3282 if (adapter->num_vfs)
3283 adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
3284
3285 /* Disable packet split due to 82599 erratum #45 */
3286 if (hw->mac.type == ixgbe_mac_82599EB)
3287 adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
9a799d71
AK		 3288
3289 /* Set the RX buffer length according to the mode */
3290 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
7c6e0a43 3291 rx_buf_len = IXGBE_RX_HDR_SIZE;
9a799d71 3292 } else {
0c19d6af 3293 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
f8212f97 3294 (netdev->mtu <= ETH_DATA_LEN))
7c6e0a43 3295 rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
9a799d71 3296 else
477de6ed 3297 rx_buf_len = ALIGN(max_frame + VLAN_HLEN, 1024);
9a799d71
AK		 3298 }
3299
63f39bd1 3300#ifdef IXGBE_FCOE
477de6ed
AD		 3301 /* adjust max frame to be able to do baby jumbo for FCoE */
3302 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
3303 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE))
3304 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE;
9a799d71 3305
477de6ed
AD		 3306#endif /* IXGBE_FCOE */
3307 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD);
3308 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) {
3309 mhadd &= ~IXGBE_MHADD_MFS_MASK;
3310 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT;
3311
3312 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
3313 }
3314
3315 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3316 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */
3317 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
3318 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
9a799d71 3319
0cefafad
JB		 3320 /*
3321 * Setup the HW Rx Head and Tail Descriptor Pointers and
3322 * the Base and Length of the Rx Descriptor Ring
3323 */
9a799d71 3324 for (i = 0; i < adapter->num_rx_queues; i++) {
4a0b9ca0 3325 rx_ring = adapter->rx_ring[i];
a6616b42 3326 rx_ring->rx_buf_len = rx_buf_len;
cc41ac7c 3327
6e455b89 3328 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)
7d637bcc
AD		 3329 set_ring_ps_enabled(rx_ring);
3330 else
3331 clear_ring_ps_enabled(rx_ring);
3332
3333 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
3334 set_ring_rsc_enabled(rx_ring);
1b3ff02e 3335 else
7d637bcc 3336 clear_ring_rsc_enabled(rx_ring);
cc41ac7c 3337
63f39bd1 3338#ifdef IXGBE_FCOE
e8e9f696 3339 if (netdev->features & NETIF_F_FCOE_MTU) {
63f39bd1
YZ		 3340 struct ixgbe_ring_feature *f;
3341 f = &adapter->ring_feature[RING_F_FCOE];
6e455b89 3342 if ((i >= f->mask) && (i < f->mask + f->indices)) {
7d637bcc 3343 clear_ring_ps_enabled(rx_ring);
6e455b89
YZ		 3344 if (rx_buf_len < IXGBE_FCOE_JUMBO_FRAME_SIZE)
3345 rx_ring->rx_buf_len =
e8e9f696 3346 IXGBE_FCOE_JUMBO_FRAME_SIZE;
7d637bcc
AD		 3347 } else if (!ring_is_rsc_enabled(rx_ring) &&
3348 !ring_is_ps_enabled(rx_ring)) {
3349 rx_ring->rx_buf_len =
3350 IXGBE_FCOE_JUMBO_FRAME_SIZE;
6e455b89 3351 }
63f39bd1 3352 }
63f39bd1 3353#endif /* IXGBE_FCOE */
477de6ed 3354 }
477de6ed
AD		 3355}
3356
7367096a
AD		 3357static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter)
3358{
3359 struct ixgbe_hw *hw = &adapter->hw;
3360 u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
3361
3362 switch (hw->mac.type) {
3363 case ixgbe_mac_82598EB:
3364 /*
3365 * For VMDq support of different descriptor types or
3366 * buffer sizes through the use of multiple SRRCTL
3367 * registers, RDRXCTL.MVMEN must be set to 1
3368 *
3369 * also, the manual doesn't mention it clearly but DCA hints
3370 * will only use queue 0's tags unless this bit is set. Side
3371 * effects of setting this bit are only that SRRCTL must be
3372 * fully programmed [0..15]
3373 */
3374 rdrxctl |= IXGBE_RDRXCTL_MVMEN;
3375 break;
3376 case ixgbe_mac_82599EB:
b93a2226 3377 case ixgbe_mac_X540:
7367096a
AD		 3378 /* Disable RSC for ACK packets */
3379 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU,
3380 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU)));
3381 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
3382 /* hardware requires some bits to be set by default */
3383 rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX);
3384 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
3385 break;
3386 default:
3387 /* We should do nothing since we don't know this hardware */
3388 return;
3389 }
3390
3391 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
3392}
3393
477de6ed
AD		 3394/**
3395 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
3396 * @adapter: board private structure
3397 *
3398 * Configure the Rx unit of the MAC after a reset.
3399 **/
3400static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
3401{
3402 struct ixgbe_hw *hw = &adapter->hw;
477de6ed
AD		 3403 int i;
3404 u32 rxctrl;
477de6ed
AD		 3405
3406 /* disable receives while setting up the descriptors */
3407 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3408 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
3409
3410 ixgbe_setup_psrtype(adapter);
7367096a 3411 ixgbe_setup_rdrxctl(adapter);
477de6ed 3412
9e10e045 3413 /* Program registers for the distribution of queues */
f5b4a52e 3414 ixgbe_setup_mrqc(adapter);
f5b4a52e 3415
9e10e045
AD		 3416 ixgbe_set_uta(adapter);
3417
477de6ed
AD		 3418 /* set_rx_buffer_len must be called before ring initialization */
3419 ixgbe_set_rx_buffer_len(adapter);
3420
3421 /*
3422 * Setup the HW Rx Head and Tail Descriptor Pointers and
3423 * the Base and Length of the Rx Descriptor Ring
3424 */
9e10e045
AD		 3425 for (i = 0; i < adapter->num_rx_queues; i++)
3426 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]);
177db6ff 3427
9e10e045
AD		 3428 /* disable drop enable for 82598 parts */
3429 if (hw->mac.type == ixgbe_mac_82598EB)
3430 rxctrl |= IXGBE_RXCTRL_DMBYPS;
3431
3432 /* enable all receives */
3433 rxctrl |= IXGBE_RXCTRL_RXEN;
3434 hw->mac.ops.enable_rx_dma(hw, rxctrl);
9a799d71
AK		 3435}
3436
068c89b0
DS		 3437static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
3438{
3439 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3440 struct ixgbe_hw *hw = &adapter->hw;
1ada1b1b 3441 int pool_ndx = adapter->num_vfs;
068c89b0
DS		 3442
3443 /* add VID to filter table */
1ada1b1b 3444 hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, true);
f62bbb5e 3445 set_bit(vid, adapter->active_vlans);
068c89b0
DS		 3446}
3447
3448static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
3449{
3450 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3451 struct ixgbe_hw *hw = &adapter->hw;
1ada1b1b 3452 int pool_ndx = adapter->num_vfs;
068c89b0 3453
068c89b0 3454 /* remove VID from filter table */
1ada1b1b 3455 hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, false);
f62bbb5e 3456 clear_bit(vid, adapter->active_vlans);
068c89b0
DS		 3457}
3458
5f6c0181
JB		 3459/**
3460 * ixgbe_vlan_filter_disable - helper to disable hw vlan filtering
3461 * @adapter: driver data
3462 */
3463static void ixgbe_vlan_filter_disable(struct ixgbe_adapter *adapter)
3464{
3465 struct ixgbe_hw *hw = &adapter->hw;
f62bbb5e
JG		 3466 u32 vlnctrl;
3467
3468 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3469 vlnctrl &= ~(IXGBE_VLNCTRL_VFE | IXGBE_VLNCTRL_CFIEN);
3470 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3471}
3472
3473/**
3474 * ixgbe_vlan_filter_enable - helper to enable hw vlan filtering
3475 * @adapter: driver data
3476 */
3477static void ixgbe_vlan_filter_enable(struct ixgbe_adapter *adapter)
3478{
3479 struct ixgbe_hw *hw = &adapter->hw;
3480 u32 vlnctrl;
3481
3482 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3483 vlnctrl |= IXGBE_VLNCTRL_VFE;
3484 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
3485 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3486}
3487
3488/**
3489 * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping
3490 * @adapter: driver data
3491 */
3492static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter)
3493{
3494 struct ixgbe_hw *hw = &adapter->hw;
3495 u32 vlnctrl;
5f6c0181
JB		 3496 int i, j;
3497
3498 switch (hw->mac.type) {
3499 case ixgbe_mac_82598EB:
f62bbb5e
JG		 3500 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3501 vlnctrl &= ~IXGBE_VLNCTRL_VME;
5f6c0181
JB		 3502 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3503 break;
3504 case ixgbe_mac_82599EB:
b93a2226 3505 case ixgbe_mac_X540:
5f6c0181
JB		 3506 for (i = 0; i < adapter->num_rx_queues; i++) {
3507 j = adapter->rx_ring[i]->reg_idx;
3508 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
3509 vlnctrl &= ~IXGBE_RXDCTL_VME;
3510 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
3511 }
3512 break;
3513 default:
3514 break;
3515 }
3516}
3517
3518/**
f62bbb5e 3519 * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping
5f6c0181
JB		 3520 * @adapter: driver data
3521 */
f62bbb5e 3522static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter)
5f6c0181
JB		 3523{
3524 struct ixgbe_hw *hw = &adapter->hw;
f62bbb5e 3525 u32 vlnctrl;
5f6c0181
JB		 3526 int i, j;
3527
3528 switch (hw->mac.type) {
3529 case ixgbe_mac_82598EB:
f62bbb5e
JG		 3530 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3531 vlnctrl |= IXGBE_VLNCTRL_VME;
5f6c0181
JB		 3532 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3533 break;
3534 case ixgbe_mac_82599EB:
b93a2226 3535 case ixgbe_mac_X540:
5f6c0181
JB		 3536 for (i = 0; i < adapter->num_rx_queues; i++) {
3537 j = adapter->rx_ring[i]->reg_idx;
3538 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
3539 vlnctrl |= IXGBE_RXDCTL_VME;
3540 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
3541 }
3542 break;
3543 default:
3544 break;
3545 }
3546}
3547
9a799d71
AK		 3548static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
3549{
f62bbb5e 3550 u16 vid;
9a799d71 3551
f62bbb5e
JG		 3552 ixgbe_vlan_rx_add_vid(adapter->netdev, 0);
3553
3554 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
3555 ixgbe_vlan_rx_add_vid(adapter->netdev, vid);
9a799d71
AK		 3556}
3557
2850062a
AD		 3558/**
3559 * ixgbe_write_uc_addr_list - write unicast addresses to RAR table
3560 * @netdev: network interface device structure
3561 *
3562 * Writes unicast address list to the RAR table.
3563 * Returns: -ENOMEM on failure/insufficient address space
3564 * 0 on no addresses written
3565 * X on writing X addresses to the RAR table
3566 **/
3567static int ixgbe_write_uc_addr_list(struct net_device *netdev)
3568{
3569 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3570 struct ixgbe_hw *hw = &adapter->hw;
3571 unsigned int vfn = adapter->num_vfs;
a1cbb15c 3572 unsigned int rar_entries = IXGBE_MAX_PF_MACVLANS;
2850062a
AD		 3573 int count = 0;
3574
3575 /* return ENOMEM indicating insufficient memory for addresses */
3576 if (netdev_uc_count(netdev) > rar_entries)
3577 return -ENOMEM;
3578
3579 if (!netdev_uc_empty(netdev) && rar_entries) {
3580 struct netdev_hw_addr *ha;
3581 /* return error if we do not support writing to RAR table */
3582 if (!hw->mac.ops.set_rar)
3583 return -ENOMEM;
3584
3585 netdev_for_each_uc_addr(ha, netdev) {
3586 if (!rar_entries)
3587 break;
3588 hw->mac.ops.set_rar(hw, rar_entries--, ha->addr,
3589 vfn, IXGBE_RAH_AV);
3590 count++;
3591 }
3592 }
3593 /* write the addresses in reverse order to avoid write combining */
3594 for (; rar_entries > 0 ; rar_entries--)
3595 hw->mac.ops.clear_rar(hw, rar_entries);
3596
3597 return count;
3598}
3599
9a799d71 3600/**
2c5645cf 3601 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
9a799d71
AK		 3602 * @netdev: network interface device structure
3603 *
2c5645cf
CL		 3604 * The set_rx_method entry point is called whenever the unicast/multicast
3605 * address list or the network interface flags are updated. This routine is
3606 * responsible for configuring the hardware for proper unicast, multicast and
3607 * promiscuous mode.
9a799d71 3608 **/
7f870475 3609void ixgbe_set_rx_mode(struct net_device *netdev)
9a799d71
AK		 3610{
3611 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3612 struct ixgbe_hw *hw = &adapter->hw;
2850062a
AD		 3613 u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE;
3614 int count;
9a799d71
AK		 3615
3616 /* Check for Promiscuous and All Multicast modes */
3617
3618 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
3619
f5dc442b
AD		 3620 /* set all bits that we expect to always be set */
3621 fctrl |= IXGBE_FCTRL_BAM;
3622 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
3623 fctrl |= IXGBE_FCTRL_PMCF;
3624
2850062a
AD		 3625 /* clear the bits we are changing the status of */
3626 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
3627
9a799d71 3628 if (netdev->flags & IFF_PROMISC) {
e433ea1f 3629 hw->addr_ctrl.user_set_promisc = true;
9a799d71 3630 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
2850062a 3631 vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_MPE);
5f6c0181
JB		 3632 /* don't hardware filter vlans in promisc mode */
3633 ixgbe_vlan_filter_disable(adapter);
9a799d71 3634 } else {
746b9f02
PM		 3635 if (netdev->flags & IFF_ALLMULTI) {
3636 fctrl |= IXGBE_FCTRL_MPE;
2850062a
AD		 3637 vmolr |= IXGBE_VMOLR_MPE;
3638 } else {
3639 /*
3640 * Write addresses to the MTA, if the attempt fails
25985edc 3641 * then we should just turn on promiscuous mode so
2850062a
AD		 3642 * that we can at least receive multicast traffic
3643 */
3644 hw->mac.ops.update_mc_addr_list(hw, netdev);
3645 vmolr |= IXGBE_VMOLR_ROMPE;
746b9f02 3646 }
5f6c0181 3647 ixgbe_vlan_filter_enable(adapter);
e433ea1f 3648 hw->addr_ctrl.user_set_promisc = false;
2850062a
AD		 3649 /*
3650 * Write addresses to available RAR registers, if there is not
3651 * sufficient space to store all the addresses then enable
25985edc 3652 * unicast promiscuous mode
2850062a
AD		 3653 */
3654 count = ixgbe_write_uc_addr_list(netdev);
3655 if (count < 0) {
3656 fctrl |= IXGBE_FCTRL_UPE;
3657 vmolr |= IXGBE_VMOLR_ROPE;
3658 }
9a799d71
AK		 3659 }
3660
2850062a 3661 if (adapter->num_vfs) {
1cdd1ec8 3662 ixgbe_restore_vf_multicasts(adapter);
2850062a
AD		 3663 vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(adapter->num_vfs)) &
3664 ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE |
3665 IXGBE_VMOLR_ROPE);
3666 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(adapter->num_vfs), vmolr);
3667 }
3668
3669 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
f62bbb5e
JG		 3670
3671 if (netdev->features & NETIF_F_HW_VLAN_RX)
3672 ixgbe_vlan_strip_enable(adapter);
3673 else
3674 ixgbe_vlan_strip_disable(adapter);
9a799d71
AK		 3675}
3676
021230d4
AV		 3677static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
3678{
3679 int q_idx;
3680 struct ixgbe_q_vector *q_vector;
3681 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
3682
3683 /* legacy and MSI only use one vector */
3684 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
3685 q_vectors = 1;
3686
3687 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
f0848276 3688 struct napi_struct *napi;
7a921c93 3689 q_vector = adapter->q_vector[q_idx];
f0848276 3690 napi = &q_vector->napi;
91281fd3
AD		 3691 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
3692 if (!q_vector->rxr_count || !q_vector->txr_count) {
3693 if (q_vector->txr_count == 1)
3694 napi->poll = &ixgbe_clean_txonly;
3695 else if (q_vector->rxr_count == 1)
3696 napi->poll = &ixgbe_clean_rxonly;
3697 }
3698 }
f0848276
JB		 3699
3700 napi_enable(napi);
021230d4
AV		 3701 }
3702}
3703
3704static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
3705{
3706 int q_idx;
3707 struct ixgbe_q_vector *q_vector;
3708 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
3709
3710 /* legacy and MSI only use one vector */
3711 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
3712 q_vectors = 1;
3713
3714 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
7a921c93 3715 q_vector = adapter->q_vector[q_idx];
021230d4
AV		 3716 napi_disable(&q_vector->napi);
3717 }
3718}
3719
7a6b6f51 3720#ifdef CONFIG_IXGBE_DCB
2f90b865
AD		 3721/*
3722 * ixgbe_configure_dcb - Configure DCB hardware
3723 * @adapter: ixgbe adapter struct
3724 *
3725 * This is called by the driver on open to configure the DCB hardware.
3726 * This is also called by the gennetlink interface when reconfiguring
3727 * the DCB state.
3728 */
3729static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
3730{
3731 struct ixgbe_hw *hw = &adapter->hw;
9806307a 3732 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
2f90b865 3733
67ebd791
AD		 3734 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) {
3735 if (hw->mac.type == ixgbe_mac_82598EB)
3736 netif_set_gso_max_size(adapter->netdev, 65536);
3737 return;
3738 }
3739
3740 if (hw->mac.type == ixgbe_mac_82598EB)
3741 netif_set_gso_max_size(adapter->netdev, 32768);
3742
2f90b865 3743
2f90b865 3744 /* Enable VLAN tag insert/strip */
f62bbb5e 3745 adapter->netdev->features |= NETIF_F_HW_VLAN_RX;
5f6c0181 3746
2f90b865 3747 hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true);
01fa7d90
AD		 3748
3749 /* reconfigure the hardware */
c27931da
JF		 3750 if (adapter->dcbx_cap & (DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE)) {
3751#ifdef CONFIG_FCOE
3752 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
3753 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
3754#endif
3755 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
3756 DCB_TX_CONFIG);
3757 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
3758 DCB_RX_CONFIG);
3759 ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg);
3760 } else {
3761 struct net_device *dev = adapter->netdev;
3762
3763 if (adapter->ixgbe_ieee_ets)
3764 dev->dcbnl_ops->ieee_setets(dev,
3765 adapter->ixgbe_ieee_ets);
3766 if (adapter->ixgbe_ieee_pfc)
3767 dev->dcbnl_ops->ieee_setpfc(dev,
3768 adapter->ixgbe_ieee_pfc);
3769 }
8187cd48
JF		 3770
3771 /* Enable RSS Hash per TC */
3772 if (hw->mac.type != ixgbe_mac_82598EB) {
3773 int i;
3774 u32 reg = 0;
3775
3776 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
3777 u8 msb = 0;
3778 u8 cnt = adapter->netdev->tc_to_txq[i].count;
3779
3780 while (cnt >>= 1)
3781 msb++;
3782
3783 reg |= msb << IXGBE_RQTC_SHIFT_TC(i);
3784 }
3785 IXGBE_WRITE_REG(hw, IXGBE_RQTC, reg);
3786 }
2f90b865
AD		 3787}
3788
3789#endif
80605c65
JF		 3790
3791static void ixgbe_configure_pb(struct ixgbe_adapter *adapter)
3792{
3793 int hdrm = 0;
3794 int num_tc = netdev_get_num_tc(adapter->netdev);
3795 struct ixgbe_hw *hw = &adapter->hw;
3796
3797 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
3798 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
3799 hdrm = 64 << adapter->fdir_pballoc;
3800
3801 hw->mac.ops.set_rxpba(&adapter->hw, num_tc, hdrm, PBA_STRATEGY_EQUAL);
3802}
3803
9a799d71
AK		 3804static void ixgbe_configure(struct ixgbe_adapter *adapter)
3805{
3806 struct net_device *netdev = adapter->netdev;
c4cf55e5 3807 struct ixgbe_hw *hw = &adapter->hw;
9a799d71
AK		 3808 int i;
3809
80605c65 3810 ixgbe_configure_pb(adapter);
7a6b6f51 3811#ifdef CONFIG_IXGBE_DCB
67ebd791 3812 ixgbe_configure_dcb(adapter);
2f90b865 3813#endif
9a799d71 3814
f62bbb5e
JG		 3815 ixgbe_set_rx_mode(netdev);
3816 ixgbe_restore_vlan(adapter);
3817
eacd73f7
YZ		 3818#ifdef IXGBE_FCOE
3819 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
3820 ixgbe_configure_fcoe(adapter);
3821
3822#endif /* IXGBE_FCOE */
c4cf55e5
PWJ		 3823 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
3824 for (i = 0; i < adapter->num_tx_queues; i++)
4a0b9ca0 3825 adapter->tx_ring[i]->atr_sample_rate =
e8e9f696 3826 adapter->atr_sample_rate;
c4cf55e5
PWJ		 3827 ixgbe_init_fdir_signature_82599(hw, adapter->fdir_pballoc);
3828 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
3829 ixgbe_init_fdir_perfect_82599(hw, adapter->fdir_pballoc);
3830 }
933d41f1 3831 ixgbe_configure_virtualization(adapter);
c4cf55e5 3832
9a799d71
AK		 3833 ixgbe_configure_tx(adapter);
3834 ixgbe_configure_rx(adapter);
9a799d71
AK		 3835}
3836
e8e26350
PW		 3837static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
3838{
3839 switch (hw->phy.type) {
3840 case ixgbe_phy_sfp_avago:
3841 case ixgbe_phy_sfp_ftl:
3842 case ixgbe_phy_sfp_intel:
3843 case ixgbe_phy_sfp_unknown:
ea0a04df
DS		 3844 case ixgbe_phy_sfp_passive_tyco:
3845 case ixgbe_phy_sfp_passive_unknown:
3846 case ixgbe_phy_sfp_active_unknown:
3847 case ixgbe_phy_sfp_ftl_active:
e8e26350
PW		 3848 return true;
3849 default:
3850 return false;
3851 }
3852}
3853
0ecc061d 3854/**
e8e26350
PW		 3855 * ixgbe_sfp_link_config - set up SFP+ link
3856 * @adapter: pointer to private adapter struct
3857 **/
3858static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter)
3859{
7086400d
AD		 3860 /*
3861 * We are assuming the worst case scenerio here, and that
3862 * is that an SFP was inserted/removed after the reset
3863 * but before SFP detection was enabled. As such the best
3864 * solution is to just start searching as soon as we start
3865 */
3866 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
3867 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;
e8e26350 3868
7086400d 3869 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
e8e26350
PW		 3870}
3871
3872/**
3873 * ixgbe_non_sfp_link_config - set up non-SFP+ link
0ecc061d
PWJ		 3874 * @hw: pointer to private hardware struct
3875 *
3876 * Returns 0 on success, negative on failure
3877 **/
e8e26350 3878static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw)
0ecc061d
PWJ		 3879{
3880 u32 autoneg;
8620a103 3881 bool negotiation, link_up = false;
0ecc061d
PWJ		 3882 u32 ret = IXGBE_ERR_LINK_SETUP;
3883
3884 if (hw->mac.ops.check_link)
3885 ret = hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
3886
3887 if (ret)
3888 goto link_cfg_out;
3889
0b0c2b31
ET		 3890 autoneg = hw->phy.autoneg_advertised;
3891 if ((!autoneg) && (hw->mac.ops.get_link_capabilities))
e8e9f696
JP		 3892 ret = hw->mac.ops.get_link_capabilities(hw, &autoneg,
3893 &negotiation);
0ecc061d
PWJ		 3894 if (ret)
3895 goto link_cfg_out;
3896
8620a103
MC		 3897 if (hw->mac.ops.setup_link)
3898 ret = hw->mac.ops.setup_link(hw, autoneg, negotiation, link_up);
0ecc061d
PWJ		 3899link_cfg_out:
3900 return ret;
3901}
3902
a34bcfff 3903static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter)
9a799d71 3904{
9a799d71 3905 struct ixgbe_hw *hw = &adapter->hw;
a34bcfff 3906 u32 gpie = 0;
9a799d71 3907
9b471446 3908 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
a34bcfff
AD		 3909 gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT |
3910 IXGBE_GPIE_OCD;
3911 gpie |= IXGBE_GPIE_EIAME;
9b471446
JB		 3912 /*
3913 * use EIAM to auto-mask when MSI-X interrupt is asserted
3914 * this saves a register write for every interrupt
3915 */
3916 switch (hw->mac.type) {
3917 case ixgbe_mac_82598EB:
3918 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
3919 break;
9b471446 3920 case ixgbe_mac_82599EB:
b93a2226
DS		 3921 case ixgbe_mac_X540:
3922 default:
9b471446
JB		 3923 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
3924 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
3925 break;
3926 }
3927 } else {
021230d4
AV		 3928 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
3929 * specifically only auto mask tx and rx interrupts */
3930 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
3931 }
9a799d71 3932
a34bcfff
AD		 3933 /* XXX: to interrupt immediately for EICS writes, enable this */
3934 /* gpie |= IXGBE_GPIE_EIMEN; */
3935
3936 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
3937 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
3938 gpie |= IXGBE_GPIE_VTMODE_64;
119fc60a
MC		 3939 }
3940
a34bcfff
AD		 3941 /* Enable fan failure interrupt */
3942 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
0befdb3e 3943 gpie |= IXGBE_SDP1_GPIEN;
0befdb3e 3944
2698b208 3945 if (hw->mac.type == ixgbe_mac_82599EB) {
e8e26350
PW		 3946 gpie |= IXGBE_SDP1_GPIEN;
3947 gpie |= IXGBE_SDP2_GPIEN;
2698b208 3948 }
a34bcfff
AD		 3949
3950 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
3951}
3952
3953static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
3954{
3955 struct ixgbe_hw *hw = &adapter->hw;
a34bcfff 3956 int err;
a34bcfff
AD		 3957 u32 ctrl_ext;
3958
3959 ixgbe_get_hw_control(adapter);
3960 ixgbe_setup_gpie(adapter);
e8e26350 3961
9a799d71
AK		 3962 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
3963 ixgbe_configure_msix(adapter);
3964 else
3965 ixgbe_configure_msi_and_legacy(adapter);
3966
c6ecf39a
DS		 3967 /* enable the optics for both mult-speed fiber and 82599 SFP+ fiber */
3968 if (hw->mac.ops.enable_tx_laser &&
3969 ((hw->phy.multispeed_fiber) ||
9f911707 3970 ((hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber) &&
c6ecf39a 3971 (hw->mac.type == ixgbe_mac_82599EB))))
61fac744
PW		 3972 hw->mac.ops.enable_tx_laser(hw);
3973
9a799d71 3974 clear_bit(__IXGBE_DOWN, &adapter->state);
021230d4
AV		 3975 ixgbe_napi_enable_all(adapter);
3976
73c4b7cd
AD		 3977 if (ixgbe_is_sfp(hw)) {
3978 ixgbe_sfp_link_config(adapter);
3979 } else {
3980 err = ixgbe_non_sfp_link_config(hw);
3981 if (err)
3982 e_err(probe, "link_config FAILED %d\n", err);
3983 }
3984
021230d4
AV		 3985 /* clear any pending interrupts, may auto mask */
3986 IXGBE_READ_REG(hw, IXGBE_EICR);
6af3b9eb 3987 ixgbe_irq_enable(adapter, true, true);
9a799d71 3988
bf069c97
DS		 3989 /*
3990 * If this adapter has a fan, check to see if we had a failure
3991 * before we enabled the interrupt.
3992 */
3993 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
3994 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
3995 if (esdp & IXGBE_ESDP_SDP1)
396e799c 3996 e_crit(drv, "Fan has stopped, replace the adapter\n");
bf069c97
DS		 3997 }
3998
1da100bb 3999 /* enable transmits */
477de6ed 4000 netif_tx_start_all_queues(adapter->netdev);
1da100bb 4001
9a799d71
AK		 4002 /* bring the link up in the watchdog, this could race with our first
4003 * link up interrupt but shouldn't be a problem */
cf8280ee
JB		 4004 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
4005 adapter->link_check_timeout = jiffies;
7086400d 4006 mod_timer(&adapter->service_timer, jiffies);
c9205697
GR		 4007
4008 /* Set PF Reset Done bit so PF/VF Mail Ops can work */
4009 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
4010 ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD;
4011 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
4012
9a799d71
AK		 4013 return 0;
4014}
4015
d4f80882
AV		 4016void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
4017{
4018 WARN_ON(in_interrupt());
7086400d
AD		 4019 /* put off any impending NetWatchDogTimeout */
4020 adapter->netdev->trans_start = jiffies;
4021
d4f80882 4022 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
032b4325 4023 usleep_range(1000, 2000);
d4f80882 4024 ixgbe_down(adapter);
5809a1ae
GR		 4025 /*
4026 * If SR-IOV enabled then wait a bit before bringing the adapter
4027 * back up to give the VFs time to respond to the reset. The
4028 * two second wait is based upon the watchdog timer cycle in
4029 * the VF driver.
4030 */
4031 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
4032 msleep(2000);
d4f80882
AV		 4033 ixgbe_up(adapter);
4034 clear_bit(__IXGBE_RESETTING, &adapter->state);
4035}
4036
9a799d71
AK		 4037int ixgbe_up(struct ixgbe_adapter *adapter)
4038{
4039 /* hardware has been reset, we need to reload some things */
4040 ixgbe_configure(adapter);
4041
4042 return ixgbe_up_complete(adapter);
4043}
4044
4045void ixgbe_reset(struct ixgbe_adapter *adapter)
4046{
c44ade9e 4047 struct ixgbe_hw *hw = &adapter->hw;
8ca783ab
DS		 4048 int err;
4049
7086400d
AD		 4050 /* lock SFP init bit to prevent race conditions with the watchdog */
4051 while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
4052 usleep_range(1000, 2000);
4053
4054 /* clear all SFP and link config related flags while holding SFP_INIT */
4055 adapter->flags2 &= ~(IXGBE_FLAG2_SEARCH_FOR_SFP |
4056 IXGBE_FLAG2_SFP_NEEDS_RESET);
4057 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG;
4058
8ca783ab 4059 err = hw->mac.ops.init_hw(hw);
da4dd0f7
PWJ		 4060 switch (err) {
4061 case 0:
4062 case IXGBE_ERR_SFP_NOT_PRESENT:
7086400d 4063 case IXGBE_ERR_SFP_NOT_SUPPORTED:
da4dd0f7
PWJ		 4064 break;
4065 case IXGBE_ERR_MASTER_REQUESTS_PENDING:
849c4542 4066 e_dev_err("master disable timed out\n");
da4dd0f7 4067 break;
794caeb2
PWJ		 4068 case IXGBE_ERR_EEPROM_VERSION:
4069 /* We are running on a pre-production device, log a warning */
849c4542
ET		 4070 e_dev_warn("This device is a pre-production adapter/LOM. "
4071 "Please be aware there may be issuesassociated with "
4072 "your hardware. If you are experiencing problems "
4073 "please contact your Intel or hardware "
4074 "representative who provided you with this "
4075 "hardware.\n");
794caeb2 4076 break;
da4dd0f7 4077 default:
849c4542 4078 e_dev_err("Hardware Error: %d\n", err);
da4dd0f7 4079 }
9a799d71 4080
7086400d
AD		 4081 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
4082
9a799d71 4083 /* reprogram the RAR[0] in case user changed it. */
1cdd1ec8
GR		 4084 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
4085 IXGBE_RAH_AV);
9a799d71
AK		 4086}
4087
9a799d71
AK		 4088/**
4089 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
9a799d71
AK		 4090 * @rx_ring: ring to free buffers from
4091 **/
b6ec895e 4092static void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring)
9a799d71 4093{
b6ec895e 4094 struct device *dev = rx_ring->dev;
9a799d71 4095 unsigned long size;
b6ec895e 4096 u16 i;
9a799d71 4097
84418e3b
AD		 4098 /* ring already cleared, nothing to do */
4099 if (!rx_ring->rx_buffer_info)
4100 return;
9a799d71 4101
84418e3b 4102 /* Free all the Rx ring sk_buffs */
9a799d71
AK		 4103 for (i = 0; i < rx_ring->count; i++) {
4104 struct ixgbe_rx_buffer *rx_buffer_info;
4105
4106 rx_buffer_info = &rx_ring->rx_buffer_info[i];
4107 if (rx_buffer_info->dma) {
b6ec895e 4108 dma_unmap_single(rx_ring->dev, rx_buffer_info->dma,
e8e9f696 4109 rx_ring->rx_buf_len,
1b507730 4110 DMA_FROM_DEVICE);
9a799d71
AK		 4111 rx_buffer_info->dma = 0;
4112 }
4113 if (rx_buffer_info->skb) {
f8212f97 4114 struct sk_buff *skb = rx_buffer_info->skb;
9a799d71 4115 rx_buffer_info->skb = NULL;
f8212f97
AD		 4116 do {
4117 struct sk_buff *this = skb;
e8171aaa 4118 if (IXGBE_RSC_CB(this)->delay_unmap) {
b6ec895e 4119 dma_unmap_single(dev,
1b507730 4120 IXGBE_RSC_CB(this)->dma,
e8e9f696 4121 rx_ring->rx_buf_len,
1b507730 4122 DMA_FROM_DEVICE);
fd3686a8 4123 IXGBE_RSC_CB(this)->dma = 0;
e8171aaa 4124 IXGBE_RSC_CB(skb)->delay_unmap = false;
fd3686a8 4125 }
f8212f97
AD		 4126 skb = skb->prev;
4127 dev_kfree_skb(this);
4128 } while (skb);
9a799d71
AK		 4129 }
4130 if (!rx_buffer_info->page)
4131 continue;
4f57ca6e 4132 if (rx_buffer_info->page_dma) {
b6ec895e 4133 dma_unmap_page(dev, rx_buffer_info->page_dma,
1b507730 4134 PAGE_SIZE / 2, DMA_FROM_DEVICE);
4f57ca6e
JB		 4135 rx_buffer_info->page_dma = 0;
4136 }
9a799d71
AK		 4137 put_page(rx_buffer_info->page);
4138 rx_buffer_info->page = NULL;
762f4c57 4139 rx_buffer_info->page_offset = 0;
9a799d71
AK		 4140 }
4141
4142 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
4143 memset(rx_ring->rx_buffer_info, 0, size);
4144
4145 /* Zero out the descriptor ring */
4146 memset(rx_ring->desc, 0, rx_ring->size);
4147
4148 rx_ring->next_to_clean = 0;
4149 rx_ring->next_to_use = 0;
9a799d71
AK		 4150}
4151
4152/**
4153 * ixgbe_clean_tx_ring - Free Tx Buffers
9a799d71
AK		 4154 * @tx_ring: ring to be cleaned
4155 **/
b6ec895e 4156static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring)
9a799d71
AK		 4157{
4158 struct ixgbe_tx_buffer *tx_buffer_info;
4159 unsigned long size;
b6ec895e 4160 u16 i;
9a799d71 4161
84418e3b
AD		 4162 /* ring already cleared, nothing to do */
4163 if (!tx_ring->tx_buffer_info)
4164 return;
9a799d71 4165
84418e3b 4166 /* Free all the Tx ring sk_buffs */
9a799d71
AK		 4167 for (i = 0; i < tx_ring->count; i++) {
4168 tx_buffer_info = &tx_ring->tx_buffer_info[i];
b6ec895e 4169 ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer_info);
9a799d71
AK		 4170 }
4171
4172 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
4173 memset(tx_ring->tx_buffer_info, 0, size);
4174
4175 /* Zero out the descriptor ring */
4176 memset(tx_ring->desc, 0, tx_ring->size);
4177
4178 tx_ring->next_to_use = 0;
4179 tx_ring->next_to_clean = 0;
9a799d71
AK		 4180}
4181
4182/**
021230d4 4183 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
9a799d71
AK		 4184 * @adapter: board private structure
4185 **/
021230d4 4186static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter)
9a799d71
AK		 4187{
4188 int i;
4189
021230d4 4190 for (i = 0; i < adapter->num_rx_queues; i++)
b6ec895e 4191 ixgbe_clean_rx_ring(adapter->rx_ring[i]);
9a799d71
AK		 4192}
4193
4194/**
021230d4 4195 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
9a799d71
AK		 4196 * @adapter: board private structure
4197 **/
021230d4 4198static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
9a799d71
AK		 4199{
4200 int i;
4201
021230d4 4202 for (i = 0; i < adapter->num_tx_queues; i++)
b6ec895e 4203 ixgbe_clean_tx_ring(adapter->tx_ring[i]);
9a799d71
AK		 4204}
4205
4206void ixgbe_down(struct ixgbe_adapter *adapter)
4207{
4208 struct net_device *netdev = adapter->netdev;
7f821875 4209 struct ixgbe_hw *hw = &adapter->hw;
9a799d71 4210 u32 rxctrl;
bf29ee6c 4211 int i;
b25ebfd2 4212 int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
9a799d71
AK		 4213
4214 /* signal that we are down to the interrupt handler */
4215 set_bit(__IXGBE_DOWN, &adapter->state);
4216
4217 /* disable receives */
7f821875
JB		 4218 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
4219 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
9a799d71 4220
2d39d576
YZ		 4221 /* disable all enabled rx queues */
4222 for (i = 0; i < adapter->num_rx_queues; i++)
4223 /* this call also flushes the previous write */
4224 ixgbe_disable_rx_queue(adapter, adapter->rx_ring[i]);
4225
032b4325 4226 usleep_range(10000, 20000);
9a799d71 4227
7f821875
JB		 4228 netif_tx_stop_all_queues(netdev);
4229
7086400d 4230 /* call carrier off first to avoid false dev_watchdog timeouts */
c0dfb90e
JF		 4231 netif_carrier_off(netdev);
4232 netif_tx_disable(netdev);
4233
4234 ixgbe_irq_disable(adapter);
4235
4236 ixgbe_napi_disable_all(adapter);
4237
d034acf1
AD		 4238 adapter->flags2 &= ~(IXGBE_FLAG2_FDIR_REQUIRES_REINIT |
4239 IXGBE_FLAG2_RESET_REQUESTED);
7086400d
AD		 4240 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
4241
4242 del_timer_sync(&adapter->service_timer);
4243
34cecbbf
AD		 4244 /* disable receive for all VFs and wait one second */
4245 if (adapter->num_vfs) {
4246 /* ping all the active vfs to let them know we are going down */
4247 ixgbe_ping_all_vfs(adapter);
4248
4249 /* Disable all VFTE/VFRE TX/RX */
4250 ixgbe_disable_tx_rx(adapter);
4251
4252 /* Mark all the VFs as inactive */
4253 for (i = 0 ; i < adapter->num_vfs; i++)
4254 adapter->vfinfo[i].clear_to_send = 0;
4255 }
4256
b25ebfd2
PW		 4257 /* Cleanup the affinity_hint CPU mask memory and callback */
4258 for (i = 0; i < num_q_vectors; i++) {
4259 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
4260 /* clear the affinity_mask in the IRQ descriptor */
4261 irq_set_affinity_hint(adapter->msix_entries[i]. vector, NULL);
4262 /* release the CPU mask memory */
4263 free_cpumask_var(q_vector->affinity_mask);
4264 }
4265
7f821875
JB		 4266 /* disable transmits in the hardware now that interrupts are off */
4267 for (i = 0; i < adapter->num_tx_queues; i++) {
bf29ee6c 4268 u8 reg_idx = adapter->tx_ring[i]->reg_idx;
34cecbbf 4269 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH);
7f821875 4270 }
34cecbbf
AD		 4271
4272 /* Disable the Tx DMA engine on 82599 and X540 */
bd508178
AD		 4273 switch (hw->mac.type) {
4274 case ixgbe_mac_82599EB:
b93a2226 4275 case ixgbe_mac_X540:
88512539 4276 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL,
e8e9f696
JP		 4277 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
4278 ~IXGBE_DMATXCTL_TE));
bd508178
AD		 4279 break;
4280 default:
4281 break;
4282 }
7f821875 4283
6f4a0e45
PL		 4284 if (!pci_channel_offline(adapter->pdev))
4285 ixgbe_reset(adapter);
c6ecf39a
DS		 4286
4287 /* power down the optics for multispeed fiber and 82599 SFP+ fiber */
4288 if (hw->mac.ops.disable_tx_laser &&
4289 ((hw->phy.multispeed_fiber) ||
9f911707 4290 ((hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber) &&
c6ecf39a
DS		 4291 (hw->mac.type == ixgbe_mac_82599EB))))
4292 hw->mac.ops.disable_tx_laser(hw);
4293
9a799d71
AK		 4294 ixgbe_clean_all_tx_rings(adapter);
4295 ixgbe_clean_all_rx_rings(adapter);
4296
5dd2d332 4297#ifdef CONFIG_IXGBE_DCA
96b0e0f6 4298 /* since we reset the hardware DCA settings were cleared */
e35ec126 4299 ixgbe_setup_dca(adapter);
96b0e0f6 4300#endif
9a799d71
AK		 4301}
4302
9a799d71 4303/**
021230d4
AV		 4304 * ixgbe_poll - NAPI Rx polling callback
4305 * @napi: structure for representing this polling device
4306 * @budget: how many packets driver is allowed to clean
4307 *
4308 * This function is used for legacy and MSI, NAPI mode
9a799d71 4309 **/
021230d4 4310static int ixgbe_poll(struct napi_struct *napi, int budget)
9a799d71 4311{
9a1a69ad 4312 struct ixgbe_q_vector *q_vector =
e8e9f696 4313 container_of(napi, struct ixgbe_q_vector, napi);
021230d4 4314 struct ixgbe_adapter *adapter = q_vector->adapter;
9a1a69ad 4315 int tx_clean_complete, work_done = 0;
9a799d71 4316
5dd2d332 4317#ifdef CONFIG_IXGBE_DCA
33cf09c9
AD		 4318 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
4319 ixgbe_update_dca(q_vector);
bd0362dd
JC		 4320#endif
4321
4a0b9ca0
PW		 4322 tx_clean_complete = ixgbe_clean_tx_irq(q_vector, adapter->tx_ring[0]);
4323 ixgbe_clean_rx_irq(q_vector, adapter->rx_ring[0], &work_done, budget);
9a799d71 4324
9a1a69ad 4325 if (!tx_clean_complete)
d2c7ddd6
DM		 4326 work_done = budget;
4327
53e52c72
DM		 4328 /* If budget not fully consumed, exit the polling mode */
4329 if (work_done < budget) {
288379f0 4330 napi_complete(napi);
f7554a2b 4331 if (adapter->rx_itr_setting & 1)
f494e8fa 4332 ixgbe_set_itr(adapter);
d4f80882 4333 if (!test_bit(__IXGBE_DOWN, &adapter->state))
835462fc 4334 ixgbe_irq_enable_queues(adapter, IXGBE_EIMS_RTX_QUEUE);
9a799d71 4335 }
9a799d71
AK		 4336 return work_done;
4337}
4338
4339/**
4340 * ixgbe_tx_timeout - Respond to a Tx Hang
4341 * @netdev: network interface device structure
4342 **/
4343static void ixgbe_tx_timeout(struct net_device *netdev)
4344{
4345 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4346
4347 /* Do the reset outside of interrupt context */
c83c6cbd 4348 ixgbe_tx_timeout_reset(adapter);
9a799d71
AK		 4349}
4350
4df10466
JB		 4351/**
4352 * ixgbe_set_rss_queues: Allocate queues for RSS
4353 * @adapter: board private structure to initialize
4354 *
4355 * This is our "base" multiqueue mode. RSS (Receive Side Scaling) will try
4356 * to allocate one Rx queue per CPU, and if available, one Tx queue per CPU.
4357 *
4358 **/
bc97114d
PWJ		 4359static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter)
4360{
4361 bool ret = false;
0cefafad 4362 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_RSS];
bc97114d
PWJ		 4363
4364 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
0cefafad
JB		 4365 f->mask = 0xF;
4366 adapter->num_rx_queues = f->indices;
4367 adapter->num_tx_queues = f->indices;
bc97114d
PWJ		 4368 ret = true;
4369 } else {
bc97114d 4370 ret = false;
b9804972
JB		 4371 }
4372
bc97114d
PWJ		 4373 return ret;
4374}
4375
c4cf55e5
PWJ		 4376/**
4377 * ixgbe_set_fdir_queues: Allocate queues for Flow Director
4378 * @adapter: board private structure to initialize
4379 *
4380 * Flow Director is an advanced Rx filter, attempting to get Rx flows back
4381 * to the original CPU that initiated the Tx session. This runs in addition
4382 * to RSS, so if a packet doesn't match an FDIR filter, we can still spread the
4383 * Rx load across CPUs using RSS.
4384 *
4385 **/
e8e9f696 4386static inline bool ixgbe_set_fdir_queues(struct ixgbe_adapter *adapter)
c4cf55e5
PWJ		 4387{
4388 bool ret = false;
4389 struct ixgbe_ring_feature *f_fdir = &adapter->ring_feature[RING_F_FDIR];
4390
4391 f_fdir->indices = min((int)num_online_cpus(), f_fdir->indices);
4392 f_fdir->mask = 0;
4393
4394 /* Flow Director must have RSS enabled */
4395 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
4396 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
4397 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)))) {
4398 adapter->num_tx_queues = f_fdir->indices;
4399 adapter->num_rx_queues = f_fdir->indices;
4400 ret = true;
4401 } else {
4402 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
4403 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4404 }
4405 return ret;
4406}
4407
0331a832
YZ		 4408#ifdef IXGBE_FCOE
4409/**
4410 * ixgbe_set_fcoe_queues: Allocate queues for Fiber Channel over Ethernet (FCoE)
4411 * @adapter: board private structure to initialize
4412 *
4413 * FCoE RX FCRETA can use up to 8 rx queues for up to 8 different exchanges.
4414 * The ring feature mask is not used as a mask for FCoE, as it can take any 8
4415 * rx queues out of the max number of rx queues, instead, it is used as the
4416 * index of the first rx queue used by FCoE.
4417 *
4418 **/
4419static inline bool ixgbe_set_fcoe_queues(struct ixgbe_adapter *adapter)
4420{
0331a832
YZ		 4421 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
4422
e5b64635
JF		 4423 if (!(adapter->flags & IXGBE_FLAG_FCOE_ENABLED))
4424 return false;
4425
4426 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
0331a832 4427#ifdef CONFIG_IXGBE_DCB
e5b64635
JF		 4428 int tc;
4429 struct net_device *dev = adapter->netdev;
4430
4431 tc = netdev_get_prio_tc_map(dev, adapter->fcoe.up);
4432 f->indices = dev->tc_to_txq[tc].count;
4433 f->mask = dev->tc_to_txq[tc].offset;
0331a832 4434#endif
e5b64635
JF		 4435 } else {
4436 f->indices = min((int)num_online_cpus(), f->indices);
4437
4438 adapter->num_rx_queues = 1;
4439 adapter->num_tx_queues = 1;
4440
0331a832 4441 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
396e799c 4442 e_info(probe, "FCoE enabled with RSS\n");
8faa2a78
YZ		 4443 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4444 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
4445 ixgbe_set_fdir_queues(adapter);
4446 else
4447 ixgbe_set_rss_queues(adapter);
0331a832
YZ		 4448 }
4449 /* adding FCoE rx rings to the end */
4450 f->mask = adapter->num_rx_queues;
4451 adapter->num_rx_queues += f->indices;
8de8b2e6 4452 adapter->num_tx_queues += f->indices;
e5b64635 4453 }
0331a832 4454
e5b64635
JF		 4455 return true;
4456}
4457#endif /* IXGBE_FCOE */
4458
4459#ifdef CONFIG_IXGBE_DCB
4460static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter)
4461{
4462 bool ret = false;
4463 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_DCB];
4464 int i, q;
4465
4466 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
4467 return ret;
4468
4469 f->indices = 0;
4470 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
4471 q = min((int)num_online_cpus(), MAX_TRAFFIC_CLASS);
4472 f->indices += q;
0331a832
YZ		 4473 }
4474
e5b64635
JF		 4475 f->mask = 0x7 << 3;
4476 adapter->num_rx_queues = f->indices;
4477 adapter->num_tx_queues = f->indices;
4478 ret = true;
4479
4480#ifdef IXGBE_FCOE
4481 /* FCoE enabled queues require special configuration done through
4482 * configure_fcoe() and others. Here we map FCoE indices onto the
4483 * DCB queue pairs allowing FCoE to own configuration later.
4484 */
4485 ixgbe_set_fcoe_queues(adapter);
4486#endif
4487
0331a832
YZ		 4488 return ret;
4489}
e5b64635 4490#endif
0331a832 4491
1cdd1ec8
GR		 4492/**
4493 * ixgbe_set_sriov_queues: Allocate queues for IOV use
4494 * @adapter: board private structure to initialize
4495 *
4496 * IOV doesn't actually use anything, so just NAK the
4497 * request for now and let the other queue routines
4498 * figure out what to do.
4499 */
4500static inline bool ixgbe_set_sriov_queues(struct ixgbe_adapter *adapter)
4501{
4502 return false;
4503}
4504
4df10466 4505/*
25985edc 4506 * ixgbe_set_num_queues: Allocate queues for device, feature dependent
4df10466
JB		 4507 * @adapter: board private structure to initialize
4508 *
4509 * This is the top level queue allocation routine. The order here is very
4510 * important, starting with the "most" number of features turned on at once,
4511 * and ending with the smallest set of features. This way large combinations
4512 * can be allocated if they're turned on, and smaller combinations are the
4513 * fallthrough conditions.
4514 *
4515 **/
847f53ff 4516static int ixgbe_set_num_queues(struct ixgbe_adapter *adapter)
bc97114d 4517{
1cdd1ec8
GR		 4518 /* Start with base case */
4519 adapter->num_rx_queues = 1;
4520 adapter->num_tx_queues = 1;
4521 adapter->num_rx_pools = adapter->num_rx_queues;
4522 adapter->num_rx_queues_per_pool = 1;
4523
4524 if (ixgbe_set_sriov_queues(adapter))
847f53ff 4525 goto done;
1cdd1ec8 4526
bc97114d
PWJ		 4527#ifdef CONFIG_IXGBE_DCB
4528 if (ixgbe_set_dcb_queues(adapter))
af22ab1b 4529 goto done;
bc97114d
PWJ		 4530
4531#endif
e5b64635
JF		 4532#ifdef IXGBE_FCOE
4533 if (ixgbe_set_fcoe_queues(adapter))
4534 goto done;
4535
4536#endif /* IXGBE_FCOE */
c4cf55e5
PWJ		 4537 if (ixgbe_set_fdir_queues(adapter))
4538 goto done;
4539
bc97114d 4540 if (ixgbe_set_rss_queues(adapter))
af22ab1b
WF		 4541 goto done;
4542
4543 /* fallback to base case */
4544 adapter->num_rx_queues = 1;
4545 adapter->num_tx_queues = 1;
4546
4547done:
847f53ff 4548 /* Notify the stack of the (possibly) reduced queue counts. */
f0796d5c 4549 netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues);
847f53ff
BH		 4550 return netif_set_real_num_rx_queues(adapter->netdev,
4551 adapter->num_rx_queues);
b9804972
JB		 4552}
4553
021230d4 4554static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter,
e8e9f696 4555 int vectors)
021230d4
AV		 4556{
4557 int err, vector_threshold;
4558
4559 /* We'll want at least 3 (vector_threshold):
4560 * 1) TxQ[0] Cleanup
4561 * 2) RxQ[0] Cleanup
4562 * 3) Other (Link Status Change, etc.)
4563 * 4) TCP Timer (optional)
4564 */
4565 vector_threshold = MIN_MSIX_COUNT;
4566
4567 /* The more we get, the more we will assign to Tx/Rx Cleanup
4568 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
4569 * Right now, we simply care about how many we'll get; we'll
4570 * set them up later while requesting irq's.
4571 */
4572 while (vectors >= vector_threshold) {
4573 err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
e8e9f696 4574 vectors);
021230d4
AV		 4575 if (!err) /* Success in acquiring all requested vectors. */
4576 break;
4577 else if (err < 0)
4578 vectors = 0; /* Nasty failure, quit now */
4579 else /* err == number of vectors we should try again with */
4580 vectors = err;
4581 }
4582
4583 if (vectors < vector_threshold) {
4584 /* Can't allocate enough MSI-X interrupts? Oh well.
4585 * This just means we'll go with either a single MSI
4586 * vector or fall back to legacy interrupts.
4587 */
849c4542
ET		 4588 netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev,
4589 "Unable to allocate MSI-X interrupts\n");
021230d4
AV		 4590 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
4591 kfree(adapter->msix_entries);
4592 adapter->msix_entries = NULL;
021230d4
AV		 4593 } else {
4594 adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */
eb7f139c
PWJ		 4595 /*
4596 * Adjust for only the vectors we'll use, which is minimum
4597 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
4598 * vectors we were allocated.
4599 */
4600 adapter->num_msix_vectors = min(vectors,
e8e9f696 4601 adapter->max_msix_q_vectors + NON_Q_VECTORS);
021230d4
AV		 4602 }
4603}
4604
021230d4 4605/**
bc97114d 4606 * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS
021230d4
AV		 4607 * @adapter: board private structure to initialize
4608 *
bc97114d
PWJ		 4609 * Cache the descriptor ring offsets for RSS to the assigned rings.
4610 *
021230d4 4611 **/
bc97114d 4612static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter)
021230d4 4613{
bc97114d 4614 int i;
bc97114d 4615
9d6b758f
AD		 4616 if (!(adapter->flags & IXGBE_FLAG_RSS_ENABLED))
4617 return false;
bc97114d 4618
9d6b758f
AD		 4619 for (i = 0; i < adapter->num_rx_queues; i++)
4620 adapter->rx_ring[i]->reg_idx = i;
4621 for (i = 0; i < adapter->num_tx_queues; i++)
4622 adapter->tx_ring[i]->reg_idx = i;
4623
4624 return true;
bc97114d
PWJ		 4625}
4626
4627#ifdef CONFIG_IXGBE_DCB
e5b64635
JF		 4628
4629/* ixgbe_get_first_reg_idx - Return first register index associated with ring */
b32c8dcc
JF		 4630static void ixgbe_get_first_reg_idx(struct ixgbe_adapter *adapter, u8 tc,
4631 unsigned int *tx, unsigned int *rx)
e5b64635
JF		 4632{
4633 struct net_device *dev = adapter->netdev;
4634 struct ixgbe_hw *hw = &adapter->hw;
4635 u8 num_tcs = netdev_get_num_tc(dev);
4636
4637 *tx = 0;
4638 *rx = 0;
4639
4640 switch (hw->mac.type) {
4641 case ixgbe_mac_82598EB:
4642 *tx = tc << 3;
4643 *rx = tc << 2;
4644 break;
4645 case ixgbe_mac_82599EB:
4646 case ixgbe_mac_X540:
4647 if (num_tcs == 8) {
4648 if (tc < 3) {
4649 *tx = tc << 5;
4650 *rx = tc << 4;
4651 } else if (tc < 5) {
4652 *tx = ((tc + 2) << 4);
4653 *rx = tc << 4;
4654 } else if (tc < num_tcs) {
4655 *tx = ((tc + 8) << 3);
4656 *rx = tc << 4;
4657 }
4658 } else if (num_tcs == 4) {
4659 *rx = tc << 5;
4660 switch (tc) {
4661 case 0:
4662 *tx = 0;
4663 break;
4664 case 1:
4665 *tx = 64;
4666 break;
4667 case 2:
4668 *tx = 96;
4669 break;
4670 case 3:
4671 *tx = 112;
4672 break;
4673 default:
4674 break;
4675 }
4676 }
4677 break;
4678 default:
4679 break;
4680 }
4681}
4682
4683#define IXGBE_MAX_Q_PER_TC (IXGBE_MAX_DCB_INDICES / MAX_TRAFFIC_CLASS)
4684
4685/* ixgbe_setup_tc - routine to configure net_device for multiple traffic
4686 * classes.
4687 *
4688 * @netdev: net device to configure
4689 * @tc: number of traffic classes to enable
4690 */
4691int ixgbe_setup_tc(struct net_device *dev, u8 tc)
4692{
4693 int i;
4694 unsigned int q, offset = 0;
4695
4696 if (!tc) {
4697 netdev_reset_tc(dev);
4698 } else {
24095aa3
JF		 4699 struct ixgbe_adapter *adapter = netdev_priv(dev);
4700
4701 /* Hardware supports up to 8 traffic classes */
4702 if (tc > MAX_TRAFFIC_CLASS || netdev_set_num_tc(dev, tc))
e5b64635
JF		 4703 return -EINVAL;
4704
4705 /* Partition Tx queues evenly amongst traffic classes */
4706 for (i = 0; i < tc; i++) {
4707 q = min((int)num_online_cpus(), IXGBE_MAX_Q_PER_TC);
4708 netdev_set_prio_tc_map(dev, i, i);
4709 netdev_set_tc_queue(dev, i, q, offset);
4710 offset += q;
4711 }
24095aa3
JF		 4712
4713 /* This enables multiple traffic class support in the hardware
4714 * which defaults to strict priority transmission by default.
4715 * If traffic classes are already enabled perhaps through DCB
4716 * code path then existing configuration will be used.
4717 */
4718 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED) &&
4719 dev->dcbnl_ops && dev->dcbnl_ops->setdcbx) {
4720 struct ieee_ets ets = {
4721 .prio_tc = {0, 1, 2, 3, 4, 5, 6, 7},
4722 };
4723 u8 mode = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;
4724
4725 dev->dcbnl_ops->setdcbx(dev, mode);
4726 dev->dcbnl_ops->ieee_setets(dev, &ets);
4727 }
e5b64635
JF		 4728 }
4729 return 0;
4730}
4731
bc97114d
PWJ		 4732/**
4733 * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB
4734 * @adapter: board private structure to initialize
4735 *
4736 * Cache the descriptor ring offsets for DCB to the assigned rings.
4737 *
4738 **/
4739static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter)
4740{
e5b64635
JF		 4741 struct net_device *dev = adapter->netdev;
4742 int i, j, k;
4743 u8 num_tcs = netdev_get_num_tc(dev);
bc97114d 4744
bd508178
AD		 4745 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
4746 return false;
f92ef202 4747
e5b64635
JF		 4748 for (i = 0, k = 0; i < num_tcs; i++) {
4749 unsigned int tx_s, rx_s;
4750 u16 count = dev->tc_to_txq[i].count;
4751
4752 ixgbe_get_first_reg_idx(adapter, i, &tx_s, &rx_s);
4753 for (j = 0; j < count; j++, k++) {
4754 adapter->tx_ring[k]->reg_idx = tx_s + j;
4755 adapter->rx_ring[k]->reg_idx = rx_s + j;
4756 adapter->tx_ring[k]->dcb_tc = i;
4757 adapter->rx_ring[k]->dcb_tc = i;
021230d4 4758 }
021230d4 4759 }
e5b64635
JF		 4760
4761 return true;
bc97114d
PWJ		 4762}
4763#endif
4764
c4cf55e5
PWJ		 4765/**
4766 * ixgbe_cache_ring_fdir - Descriptor ring to register mapping for Flow Director
4767 * @adapter: board private structure to initialize
4768 *
4769 * Cache the descriptor ring offsets for Flow Director to the assigned rings.
4770 *
4771 **/
e8e9f696 4772static inline bool ixgbe_cache_ring_fdir(struct ixgbe_adapter *adapter)
c4cf55e5
PWJ		 4773{
4774 int i;
4775 bool ret = false;
4776
4777 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
4778 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4779 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))) {
4780 for (i = 0; i < adapter->num_rx_queues; i++)
4a0b9ca0 4781 adapter->rx_ring[i]->reg_idx = i;
c4cf55e5 4782 for (i = 0; i < adapter->num_tx_queues; i++)
4a0b9ca0 4783 adapter->tx_ring[i]->reg_idx = i;
c4cf55e5
PWJ		 4784 ret = true;
4785 }
4786
4787 return ret;
4788}
4789
0331a832
YZ		 4790#ifdef IXGBE_FCOE
4791/**
4792 * ixgbe_cache_ring_fcoe - Descriptor ring to register mapping for the FCoE
4793 * @adapter: board private structure to initialize
4794 *
4795 * Cache the descriptor ring offsets for FCoE mode to the assigned rings.
4796 *
4797 */
4798static inline bool ixgbe_cache_ring_fcoe(struct ixgbe_adapter *adapter)
4799{
0331a832 4800 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
bf29ee6c
AD		 4801 int i;
4802 u8 fcoe_rx_i = 0, fcoe_tx_i = 0;
4803
4804 if (!(adapter->flags & IXGBE_FLAG_FCOE_ENABLED))
4805 return false;
0331a832 4806
bf29ee6c
AD		 4807 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
4808 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4809 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
4810 ixgbe_cache_ring_fdir(adapter);
4811 else
4812 ixgbe_cache_ring_rss(adapter);
8faa2a78 4813
bf29ee6c
AD		 4814 fcoe_rx_i = f->mask;
4815 fcoe_tx_i = f->mask;
0331a832 4816 }
bf29ee6c
AD		 4817 for (i = 0; i < f->indices; i++, fcoe_rx_i++, fcoe_tx_i++) {
4818 adapter->rx_ring[f->mask + i]->reg_idx = fcoe_rx_i;
4819 adapter->tx_ring[f->mask + i]->reg_idx = fcoe_tx_i;
4820 }
4821 return true;
0331a832
YZ		 4822}
4823
4824#endif /* IXGBE_FCOE */
1cdd1ec8
GR		 4825/**
4826 * ixgbe_cache_ring_sriov - Descriptor ring to register mapping for sriov
4827 * @adapter: board private structure to initialize
4828 *
4829 * SR-IOV doesn't use any descriptor rings but changes the default if
4830 * no other mapping is used.
4831 *
4832 */
4833static inline bool ixgbe_cache_ring_sriov(struct ixgbe_adapter *adapter)
4834{
4a0b9ca0
PW		 4835 adapter->rx_ring[0]->reg_idx = adapter->num_vfs * 2;
4836 adapter->tx_ring[0]->reg_idx = adapter->num_vfs * 2;
1cdd1ec8
GR		 4837 if (adapter->num_vfs)
4838 return true;
4839 else
4840 return false;
4841}
4842
bc97114d
PWJ		 4843/**
4844 * ixgbe_cache_ring_register - Descriptor ring to register mapping
4845 * @adapter: board private structure to initialize
4846 *
4847 * Once we know the feature-set enabled for the device, we'll cache
4848 * the register offset the descriptor ring is assigned to.
4849 *
4850 * Note, the order the various feature calls is important. It must start with
4851 * the "most" features enabled at the same time, then trickle down to the
4852 * least amount of features turned on at once.
4853 **/
4854static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter)
4855{
4856 /* start with default case */
4a0b9ca0
PW		 4857 adapter->rx_ring[0]->reg_idx = 0;
4858 adapter->tx_ring[0]->reg_idx = 0;
bc97114d 4859
1cdd1ec8
GR		 4860 if (ixgbe_cache_ring_sriov(adapter))
4861 return;
4862
e5b64635
JF		 4863#ifdef CONFIG_IXGBE_DCB
4864 if (ixgbe_cache_ring_dcb(adapter))
4865 return;
4866#endif
4867
0331a832
YZ		 4868#ifdef IXGBE_FCOE
4869 if (ixgbe_cache_ring_fcoe(adapter))
4870 return;
0331a832 4871#endif /* IXGBE_FCOE */
bc97114d 4872
c4cf55e5
PWJ		 4873 if (ixgbe_cache_ring_fdir(adapter))
4874 return;
4875
bc97114d
PWJ		 4876 if (ixgbe_cache_ring_rss(adapter))
4877 return;
021230d4
AV		 4878}
4879
9a799d71
AK		 4880/**
4881 * ixgbe_alloc_queues - Allocate memory for all rings
4882 * @adapter: board private structure to initialize
4883 *
4884 * We allocate one ring per queue at run-time since we don't know the
4df10466
JB		 4885 * number of queues at compile-time. The polling_netdev array is
4886 * intended for Multiqueue, but should work fine with a single queue.
9a799d71 4887 **/
2f90b865 4888static int ixgbe_alloc_queues(struct ixgbe_adapter *adapter)
9a799d71 4889{
e2ddeba9 4890 int rx = 0, tx = 0, nid = adapter->node;
9a799d71 4891
e2ddeba9
ED		 4892 if (nid < 0 || !node_online(nid))
4893 nid = first_online_node;
4894
4895 for (; tx < adapter->num_tx_queues; tx++) {
4896 struct ixgbe_ring *ring;
4897
4898 ring = kzalloc_node(sizeof(*ring), GFP_KERNEL, nid);
4a0b9ca0 4899 if (!ring)
e2ddeba9 4900 ring = kzalloc(sizeof(*ring), GFP_KERNEL);
4a0b9ca0 4901 if (!ring)
e2ddeba9 4902 goto err_allocation;
4a0b9ca0 4903 ring->count = adapter->tx_ring_count;
e2ddeba9
ED		 4904 ring->queue_index = tx;
4905 ring->numa_node = nid;
b6ec895e 4906 ring->dev = &adapter->pdev->dev;
fc77dc3c 4907 ring->netdev = adapter->netdev;
4a0b9ca0 4908
e2ddeba9 4909 adapter->tx_ring[tx] = ring;
021230d4 4910 }
b9804972 4911
e2ddeba9
ED		 4912 for (; rx < adapter->num_rx_queues; rx++) {
4913 struct ixgbe_ring *ring;
4a0b9ca0 4914
e2ddeba9 4915 ring = kzalloc_node(sizeof(*ring), GFP_KERNEL, nid);
4a0b9ca0 4916 if (!ring)
e2ddeba9 4917 ring = kzalloc(sizeof(*ring), GFP_KERNEL);
4a0b9ca0 4918 if (!ring)
e2ddeba9
ED		 4919 goto err_allocation;
4920 ring->count = adapter->rx_ring_count;
4921 ring->queue_index = rx;
4922 ring->numa_node = nid;
b6ec895e 4923 ring->dev = &adapter->pdev->dev;
fc77dc3c 4924 ring->netdev = adapter->netdev;
4a0b9ca0 4925
e2ddeba9 4926 adapter->rx_ring[rx] = ring;
021230d4
AV		 4927 }
4928
4929 ixgbe_cache_ring_register(adapter);
4930
4931 return 0;
4932
e2ddeba9
ED		 4933err_allocation:
4934 while (tx)
4935 kfree(adapter->tx_ring[--tx]);
4936
4937 while (rx)
4938 kfree(adapter->rx_ring[--rx]);
021230d4
AV		 4939 return -ENOMEM;
4940}
4941
4942/**
4943 * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported
4944 * @adapter: board private structure to initialize
4945 *
4946 * Attempt to configure the interrupts using the best available
4947 * capabilities of the hardware and the kernel.
4948 **/
feea6a57 4949static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter)
021230d4 4950{
8be0e467 4951 struct ixgbe_hw *hw = &adapter->hw;
021230d4
AV		 4952 int err = 0;
4953 int vector, v_budget;
4954
4955 /*
4956 * It's easy to be greedy for MSI-X vectors, but it really
4957 * doesn't do us much good if we have a lot more vectors
4958 * than CPU's. So let's be conservative and only ask for
342bde1b 4959 * (roughly) the same number of vectors as there are CPU's.
021230d4
AV		 4960 */
4961 v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
e8e9f696 4962 (int)num_online_cpus()) + NON_Q_VECTORS;
021230d4
AV		 4963
4964 /*
4965 * At the same time, hardware can only support a maximum of
8be0e467
PW		 4966 * hw.mac->max_msix_vectors vectors. With features
4967 * such as RSS and VMDq, we can easily surpass the number of Rx and Tx
4968 * descriptor queues supported by our device. Thus, we cap it off in
4969 * those rare cases where the cpu count also exceeds our vector limit.
021230d4 4970 */
8be0e467 4971 v_budget = min(v_budget, (int)hw->mac.max_msix_vectors);
021230d4
AV		 4972
4973 /* A failure in MSI-X entry allocation isn't fatal, but it does
4974 * mean we disable MSI-X capabilities of the adapter. */
4975 adapter->msix_entries = kcalloc(v_budget,
e8e9f696 4976 sizeof(struct msix_entry), GFP_KERNEL);
7a921c93
AD		 4977 if (adapter->msix_entries) {
4978 for (vector = 0; vector < v_budget; vector++)
4979 adapter->msix_entries[vector].entry = vector;
021230d4 4980
7a921c93 4981 ixgbe_acquire_msix_vectors(adapter, v_budget);
021230d4 4982
7a921c93
AD		 4983 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
4984 goto out;
4985 }
26d27844 4986
7a921c93
AD		 4987 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
4988 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
45b9f509
AD		 4989 if (adapter->flags & (IXGBE_FLAG_FDIR_HASH_CAPABLE |
4990 IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) {
4991 e_err(probe,
4992 "Flow Director is not supported while multiple "
4993 "queues are disabled. Disabling Flow Director\n");
4994 }
c4cf55e5
PWJ		 4995 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
4996 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4997 adapter->atr_sample_rate = 0;
1cdd1ec8
GR		 4998 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
4999 ixgbe_disable_sriov(adapter);
5000
847f53ff
BH		 5001 err = ixgbe_set_num_queues(adapter);
5002 if (err)
5003 return err;
021230d4 5004
021230d4
AV		 5005 err = pci_enable_msi(adapter->pdev);
5006 if (!err) {
5007 adapter->flags |= IXGBE_FLAG_MSI_ENABLED;
5008 } else {
849c4542
ET		 5009 netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev,
5010 "Unable to allocate MSI interrupt, "
5011 "falling back to legacy. Error: %d\n", err);
021230d4
AV		 5012 /* reset err */
5013 err = 0;
5014 }
5015
5016out:
021230d4
AV		 5017 return err;
5018}
5019
7a921c93
AD		 5020/**
5021 * ixgbe_alloc_q_vectors - Allocate memory for interrupt vectors
5022 * @adapter: board private structure to initialize
5023 *
5024 * We allocate one q_vector per queue interrupt. If allocation fails we
5025 * return -ENOMEM.
5026 **/
5027static int ixgbe_alloc_q_vectors(struct ixgbe_adapter *adapter)
5028{
5029 int q_idx, num_q_vectors;
5030 struct ixgbe_q_vector *q_vector;
7a921c93
AD		 5031 int (*poll)(struct napi_struct *, int);
5032
5033 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
5034 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
91281fd3 5035 poll = &ixgbe_clean_rxtx_many;
7a921c93
AD		 5036 } else {
5037 num_q_vectors = 1;
7a921c93
AD		 5038 poll = &ixgbe_poll;
5039 }
5040
5041 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
1a6c14a2 5042 q_vector = kzalloc_node(sizeof(struct ixgbe_q_vector),
e8e9f696 5043 GFP_KERNEL, adapter->node);
1a6c14a2
JB		 5044 if (!q_vector)
5045 q_vector = kzalloc(sizeof(struct ixgbe_q_vector),
e8e9f696 5046 GFP_KERNEL);
7a921c93
AD		 5047 if (!q_vector)
5048 goto err_out;
5049 q_vector->adapter = adapter;
f7554a2b
NS		 5050 if (q_vector->txr_count && !q_vector->rxr_count)
5051 q_vector->eitr = adapter->tx_eitr_param;
5052 else
5053 q_vector->eitr = adapter->rx_eitr_param;
fe49f04a 5054 q_vector->v_idx = q_idx;
91281fd3 5055 netif_napi_add(adapter->netdev, &q_vector->napi, (*poll), 64);
7a921c93
AD		 5056 adapter->q_vector[q_idx] = q_vector;
5057 }
5058
5059 return 0;
5060
5061err_out:
5062 while (q_idx) {
5063 q_idx--;
5064 q_vector = adapter->q_vector[q_idx];
5065 netif_napi_del(&q_vector->napi);
5066 kfree(q_vector);
5067 adapter->q_vector[q_idx] = NULL;
5068 }
5069 return -ENOMEM;
5070}
5071
5072/**
5073 * ixgbe_free_q_vectors - Free memory allocated for interrupt vectors
5074 * @adapter: board private structure to initialize
5075 *
5076 * This function frees the memory allocated to the q_vectors. In addition if
5077 * NAPI is enabled it will delete any references to the NAPI struct prior
5078 * to freeing the q_vector.
5079 **/
5080static void ixgbe_free_q_vectors(struct ixgbe_adapter *adapter)
5081{
5082 int q_idx, num_q_vectors;
7a921c93 5083
91281fd3 5084 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
7a921c93 5085 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
91281fd3 5086 else
7a921c93 5087 num_q_vectors = 1;
7a921c93
AD		 5088
5089 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
5090 struct ixgbe_q_vector *q_vector = adapter->q_vector[q_idx];
7a921c93 5091 adapter->q_vector[q_idx] = NULL;
91281fd3 5092 netif_napi_del(&q_vector->napi);
7a921c93
AD		 5093 kfree(q_vector);
5094 }
5095}
5096
7b25cdba 5097static void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter)
021230d4
AV		 5098{
5099 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
5100 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
5101 pci_disable_msix(adapter->pdev);
5102 kfree(adapter->msix_entries);
5103 adapter->msix_entries = NULL;
5104 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
5105 adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED;
5106 pci_disable_msi(adapter->pdev);
5107 }
021230d4
AV		 5108}
5109
5110/**
5111 * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme
5112 * @adapter: board private structure to initialize
5113 *
5114 * We determine which interrupt scheme to use based on...
5115 * - Kernel support (MSI, MSI-X)
5116 * - which can be user-defined (via MODULE_PARAM)
5117 * - Hardware queue count (num_*_queues)
5118 * - defined by miscellaneous hardware support/features (RSS, etc.)
5119 **/
2f90b865 5120int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter)
021230d4
AV		 5121{
5122 int err;
5123
5124 /* Number of supported queues */
847f53ff
BH		 5125 err = ixgbe_set_num_queues(adapter);
5126 if (err)
5127 return err;
021230d4 5128
021230d4
AV		 5129 err = ixgbe_set_interrupt_capability(adapter);
5130 if (err) {
849c4542 5131 e_dev_err("Unable to setup interrupt capabilities\n");
021230d4 5132 goto err_set_interrupt;
9a799d71
AK		 5133 }
5134
7a921c93
AD		 5135 err = ixgbe_alloc_q_vectors(adapter);
5136 if (err) {
849c4542 5137 e_dev_err("Unable to allocate memory for queue vectors\n");
7a921c93
AD		 5138 goto err_alloc_q_vectors;
5139 }
5140
5141 err = ixgbe_alloc_queues(adapter);
5142 if (err) {
849c4542 5143 e_dev_err("Unable to allocate memory for queues\n");
7a921c93
AD		 5144 goto err_alloc_queues;
5145 }
5146
849c4542 5147 e_dev_info("Multiqueue %s: Rx Queue count = %u, Tx Queue count = %u\n",
396e799c
ET		 5148 (adapter->num_rx_queues > 1) ? "Enabled" : "Disabled",
5149 adapter->num_rx_queues, adapter->num_tx_queues);
021230d4
AV		 5150
5151 set_bit(__IXGBE_DOWN, &adapter->state);
5152
9a799d71 5153 return 0;
021230d4 5154
7a921c93
AD		 5155err_alloc_queues:
5156 ixgbe_free_q_vectors(adapter);
5157err_alloc_q_vectors:
5158 ixgbe_reset_interrupt_capability(adapter);
021230d4 5159err_set_interrupt:
7a921c93
AD		 5160 return err;
5161}
5162
5163/**
5164 * ixgbe_clear_interrupt_scheme - Clear the current interrupt scheme settings
5165 * @adapter: board private structure to clear interrupt scheme on
5166 *
5167 * We go through and clear interrupt specific resources and reset the structure
5168 * to pre-load conditions
5169 **/
5170void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter *adapter)
5171{
4a0b9ca0
PW		 5172 int i;
5173
5174 for (i = 0; i < adapter->num_tx_queues; i++) {
5175 kfree(adapter->tx_ring[i]);
5176 adapter->tx_ring[i] = NULL;
5177 }
5178 for (i = 0; i < adapter->num_rx_queues; i++) {
1a51502b
ED		 5179 struct ixgbe_ring *ring = adapter->rx_ring[i];
5180
5181 /* ixgbe_get_stats64() might access this ring, we must wait
5182 * a grace period before freeing it.
5183 */
bcec8b65 5184 kfree_rcu(ring, rcu);
4a0b9ca0
PW		 5185 adapter->rx_ring[i] = NULL;
5186 }
7a921c93 5187
b8eb3a10
DS		 5188 adapter->num_tx_queues = 0;
5189 adapter->num_rx_queues = 0;
5190
7a921c93
AD		 5191 ixgbe_free_q_vectors(adapter);
5192 ixgbe_reset_interrupt_capability(adapter);
9a799d71
AK		 5193}
5194
5195/**
5196 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
5197 * @adapter: board private structure to initialize
5198 *
5199 * ixgbe_sw_init initializes the Adapter private data structure.
5200 * Fields are initialized based on PCI device information and
5201 * OS network device settings (MTU size).
5202 **/
5203static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
5204{
5205 struct ixgbe_hw *hw = &adapter->hw;
5206 struct pci_dev *pdev = adapter->pdev;
9a713e7c 5207 struct net_device *dev = adapter->netdev;
021230d4 5208 unsigned int rss;
7a6b6f51 5209#ifdef CONFIG_IXGBE_DCB
2f90b865
AD		 5210 int j;
5211 struct tc_configuration *tc;
5212#endif
16b61beb 5213 int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
021230d4 5214
c44ade9e
JB		 5215 /* PCI config space info */
5216
5217 hw->vendor_id = pdev->vendor;
5218 hw->device_id = pdev->device;
5219 hw->revision_id = pdev->revision;
5220 hw->subsystem_vendor_id = pdev->subsystem_vendor;
5221 hw->subsystem_device_id = pdev->subsystem_device;
5222
021230d4
AV		 5223 /* Set capability flags */
5224 rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus());
5225 adapter->ring_feature[RING_F_RSS].indices = rss;
5226 adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
2f90b865 5227 adapter->ring_feature[RING_F_DCB].indices = IXGBE_MAX_DCB_INDICES;
bd508178
AD		 5228 switch (hw->mac.type) {
5229 case ixgbe_mac_82598EB:
bf069c97
DS		 5230 if (hw->device_id == IXGBE_DEV_ID_82598AT)
5231 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE;
e8e26350 5232 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82598;
bd508178
AD		 5233 break;
5234 case ixgbe_mac_82599EB:
b93a2226 5235 case ixgbe_mac_X540:
e8e26350 5236 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599;
0c19d6af
PWJ		 5237 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
5238 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
119fc60a
MC		 5239 if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM)
5240 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
45b9f509
AD		 5241 /* n-tuple support exists, always init our spinlock */
5242 spin_lock_init(&adapter->fdir_perfect_lock);
5243 /* Flow Director hash filters enabled */
5244 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
5245 adapter->atr_sample_rate = 20;
c4cf55e5 5246 adapter->ring_feature[RING_F_FDIR].indices =
e8e9f696 5247 IXGBE_MAX_FDIR_INDICES;
c4cf55e5 5248 adapter->fdir_pballoc = 0;
eacd73f7 5249#ifdef IXGBE_FCOE
0d551589
YZ		 5250 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
5251 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
5252 adapter->ring_feature[RING_F_FCOE].indices = 0;
61a0f421 5253#ifdef CONFIG_IXGBE_DCB
6ee16520
YZ		 5254 /* Default traffic class to use for FCoE */
5255 adapter->fcoe.tc = IXGBE_FCOE_DEFTC;
56075a98 5256 adapter->fcoe.up = IXGBE_FCOE_DEFTC;
61a0f421 5257#endif
eacd73f7 5258#endif /* IXGBE_FCOE */
bd508178
AD		 5259 break;
5260 default:
5261 break;
f8212f97 5262 }
2f90b865 5263
7a6b6f51 5264#ifdef CONFIG_IXGBE_DCB
2f90b865
AD		 5265 /* Configure DCB traffic classes */
5266 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
5267 tc = &adapter->dcb_cfg.tc_config[j];
5268 tc->path[DCB_TX_CONFIG].bwg_id = 0;
5269 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1);
5270 tc->path[DCB_RX_CONFIG].bwg_id = 0;
5271 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1);
5272 tc->dcb_pfc = pfc_disabled;
5273 }
5274 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100;
5275 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100;
264857b8 5276 adapter->dcb_cfg.pfc_mode_enable = false;
2f90b865 5277 adapter->dcb_set_bitmap = 0x00;
3032309b 5278 adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE;
2f90b865 5279 ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg,
e5b64635 5280 MAX_TRAFFIC_CLASS);
2f90b865
AD		 5281
5282#endif
9a799d71
AK		 5283
5284 /* default flow control settings */
cd7664f6 5285 hw->fc.requested_mode = ixgbe_fc_full;
71fd570b 5286 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */
264857b8
PWJ		 5287#ifdef CONFIG_DCB
5288 adapter->last_lfc_mode = hw->fc.current_mode;
5289#endif
16b61beb
JF		 5290 hw->fc.high_water = FC_HIGH_WATER(max_frame);
5291 hw->fc.low_water = FC_LOW_WATER(max_frame);
2b9ade93
JB		 5292 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
5293 hw->fc.send_xon = true;
71fd570b 5294 hw->fc.disable_fc_autoneg = false;
9a799d71 5295
30efa5a3 5296 /* enable itr by default in dynamic mode */
f7554a2b
NS		 5297 adapter->rx_itr_setting = 1;
5298 adapter->rx_eitr_param = 20000;
5299 adapter->tx_itr_setting = 1;
5300 adapter->tx_eitr_param = 10000;
30efa5a3
JB		 5301
5302 /* set defaults for eitr in MegaBytes */
5303 adapter->eitr_low = 10;
5304 adapter->eitr_high = 20;
5305
5306 /* set default ring sizes */
5307 adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
5308 adapter->rx_ring_count = IXGBE_DEFAULT_RXD;
5309
9a799d71 5310 /* initialize eeprom parameters */
c44ade9e 5311 if (ixgbe_init_eeprom_params_generic(hw)) {
849c4542 5312 e_dev_err("EEPROM initialization failed\n");
9a799d71
AK		 5313 return -EIO;
5314 }
5315
021230d4 5316 /* enable rx csum by default */
9a799d71
AK		 5317 adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
5318
1a6c14a2
JB		 5319 /* get assigned NUMA node */
5320 adapter->node = dev_to_node(&pdev->dev);
5321
9a799d71
AK		 5322 set_bit(__IXGBE_DOWN, &adapter->state);
5323
5324 return 0;
5325}
5326
5327/**
5328 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
3a581073 5329 * @tx_ring: tx descriptor ring (for a specific queue) to setup
9a799d71
AK		 5330 *
5331 * Return 0 on success, negative on failure
5332 **/
b6ec895e 5333int ixgbe_setup_tx_resources(struct ixgbe_ring *tx_ring)
9a799d71 5334{
b6ec895e 5335 struct device *dev = tx_ring->dev;
9a799d71
AK		 5336 int size;
5337
3a581073 5338 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
89bf67f1 5339 tx_ring->tx_buffer_info = vzalloc_node(size, tx_ring->numa_node);
1a6c14a2 5340 if (!tx_ring->tx_buffer_info)
89bf67f1 5341 tx_ring->tx_buffer_info = vzalloc(size);
e01c31a5
JB		 5342 if (!tx_ring->tx_buffer_info)
5343 goto err;
9a799d71
AK		 5344
5345 /* round up to nearest 4K */
12207e49 5346 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
3a581073 5347 tx_ring->size = ALIGN(tx_ring->size, 4096);
9a799d71 5348
b6ec895e 5349 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
1b507730 5350 &tx_ring->dma, GFP_KERNEL);
e01c31a5
JB		 5351 if (!tx_ring->desc)
5352 goto err;
9a799d71 5353
3a581073
JB		 5354 tx_ring->next_to_use = 0;
5355 tx_ring->next_to_clean = 0;
5356 tx_ring->work_limit = tx_ring->count;
9a799d71 5357 return 0;
e01c31a5
JB		 5358
5359err:
5360 vfree(tx_ring->tx_buffer_info);
5361 tx_ring->tx_buffer_info = NULL;
b6ec895e 5362 dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n");
e01c31a5 5363 return -ENOMEM;
9a799d71
AK		 5364}
5365
69888674
AD		 5366/**
5367 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
5368 * @adapter: board private structure
5369 *
5370 * If this function returns with an error, then it's possible one or
5371 * more of the rings is populated (while the rest are not). It is the
5372 * callers duty to clean those orphaned rings.
5373 *
5374 * Return 0 on success, negative on failure
5375 **/
5376static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
5377{
5378 int i, err = 0;
5379
5380 for (i = 0; i < adapter->num_tx_queues; i++) {
b6ec895e 5381 err = ixgbe_setup_tx_resources(adapter->tx_ring[i]);
69888674
AD		 5382 if (!err)
5383 continue;
396e799c 5384 e_err(probe, "Allocation for Tx Queue %u failed\n", i);
69888674
AD		 5385 break;
5386 }
5387
5388 return err;
5389}
5390
9a799d71
AK		 5391/**
5392 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
3a581073 5393 * @rx_ring: rx descriptor ring (for a specific queue) to setup
9a799d71
AK		 5394 *
5395 * Returns 0 on success, negative on failure
5396 **/
b6ec895e 5397int ixgbe_setup_rx_resources(struct ixgbe_ring *rx_ring)
9a799d71 5398{
b6ec895e 5399 struct device *dev = rx_ring->dev;
021230d4 5400 int size;
9a799d71 5401
3a581073 5402 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
89bf67f1 5403 rx_ring->rx_buffer_info = vzalloc_node(size, rx_ring->numa_node);
1a6c14a2 5404 if (!rx_ring->rx_buffer_info)
89bf67f1 5405 rx_ring->rx_buffer_info = vzalloc(size);
b6ec895e
AD		 5406 if (!rx_ring->rx_buffer_info)
5407 goto err;
9a799d71 5408
9a799d71 5409 /* Round up to nearest 4K */
3a581073
JB		 5410 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
5411 rx_ring->size = ALIGN(rx_ring->size, 4096);
9a799d71 5412
b6ec895e 5413 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
1b507730 5414 &rx_ring->dma, GFP_KERNEL);
9a799d71 5415
b6ec895e
AD		 5416 if (!rx_ring->desc)
5417 goto err;
9a799d71 5418
3a581073
JB		 5419 rx_ring->next_to_clean = 0;
5420 rx_ring->next_to_use = 0;
9a799d71
AK		 5421
5422 return 0;
b6ec895e
AD		 5423err:
5424 vfree(rx_ring->rx_buffer_info);
5425 rx_ring->rx_buffer_info = NULL;
5426 dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n");
177db6ff 5427 return -ENOMEM;
9a799d71
AK		 5428}
5429
69888674
AD		 5430/**
5431 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
5432 * @adapter: board private structure
5433 *
5434 * If this function returns with an error, then it's possible one or
5435 * more of the rings is populated (while the rest are not). It is the
5436 * callers duty to clean those orphaned rings.
5437 *
5438 * Return 0 on success, negative on failure
5439 **/
69888674
AD		 5440static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
5441{
5442 int i, err = 0;
5443
5444 for (i = 0; i < adapter->num_rx_queues; i++) {
b6ec895e 5445 err = ixgbe_setup_rx_resources(adapter->rx_ring[i]);
69888674
AD		 5446 if (!err)
5447 continue;
396e799c 5448 e_err(probe, "Allocation for Rx Queue %u failed\n", i);
69888674
AD		 5449 break;
5450 }
5451
5452 return err;
5453}
5454
9a799d71
AK		 5455/**
5456 * ixgbe_free_tx_resources - Free Tx Resources per Queue
9a799d71
AK		 5457 * @tx_ring: Tx descriptor ring for a specific queue
5458 *
5459 * Free all transmit software resources
5460 **/
b6ec895e 5461void ixgbe_free_tx_resources(struct ixgbe_ring *tx_ring)
9a799d71 5462{
b6ec895e 5463 ixgbe_clean_tx_ring(tx_ring);
9a799d71
AK		 5464
5465 vfree(tx_ring->tx_buffer_info);
5466 tx_ring->tx_buffer_info = NULL;
5467
b6ec895e
AD		 5468 /* if not set, then don't free */
5469 if (!tx_ring->desc)
5470 return;
5471
5472 dma_free_coherent(tx_ring->dev, tx_ring->size,
5473 tx_ring->desc, tx_ring->dma);
9a799d71
AK		 5474
5475 tx_ring->desc = NULL;
5476}
5477
5478/**
5479 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
5480 * @adapter: board private structure
5481 *
5482 * Free all transmit software resources
5483 **/
5484static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter)
5485{
5486 int i;
5487
5488 for (i = 0; i < adapter->num_tx_queues; i++)
4a0b9ca0 5489 if (adapter->tx_ring[i]->desc)
b6ec895e 5490 ixgbe_free_tx_resources(adapter->tx_ring[i]);
9a799d71
AK		 5491}
5492
5493/**
b4617240 5494 * ixgbe_free_rx_resources - Free Rx Resources
9a799d71
AK		 5495 * @rx_ring: ring to clean the resources from
5496 *
5497 * Free all receive software resources
5498 **/
b6ec895e 5499void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring)
9a799d71 5500{
b6ec895e 5501 ixgbe_clean_rx_ring(rx_ring);
9a799d71
AK		 5502
5503 vfree(rx_ring->rx_buffer_info);
5504 rx_ring->rx_buffer_info = NULL;
5505
b6ec895e
AD		 5506 /* if not set, then don't free */
5507 if (!rx_ring->desc)
5508 return;
5509
5510 dma_free_coherent(rx_ring->dev, rx_ring->size,
5511 rx_ring->desc, rx_ring->dma);
9a799d71
AK		 5512
5513 rx_ring->desc = NULL;
5514}
5515
5516/**
5517 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
5518 * @adapter: board private structure
5519 *
5520 * Free all receive software resources
5521 **/
5522static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter)
5523{
5524 int i;
5525
5526 for (i = 0; i < adapter->num_rx_queues; i++)
4a0b9ca0 5527 if (adapter->rx_ring[i]->desc)
b6ec895e 5528 ixgbe_free_rx_resources(adapter->rx_ring[i]);
9a799d71
AK		 5529}
5530
9a799d71
AK		 5531/**
5532 * ixgbe_change_mtu - Change the Maximum Transfer Unit
5533 * @netdev: network interface device structure
5534 * @new_mtu: new value for maximum frame size
5535 *
5536 * Returns 0 on success, negative on failure
5537 **/
5538static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
5539{
5540 struct ixgbe_adapter *adapter = netdev_priv(netdev);
16b61beb 5541 struct ixgbe_hw *hw = &adapter->hw;
9a799d71
AK		 5542 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
5543
42c783c5 5544 /* MTU < 68 is an error and causes problems on some kernels */
e9f98072
GR		 5545 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED &&
5546 hw->mac.type != ixgbe_mac_X540) {
5547 if ((new_mtu < 68) || (max_frame > MAXIMUM_ETHERNET_VLAN_SIZE))
5548 return -EINVAL;
5549 } else {
5550 if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
5551 return -EINVAL;
5552 }
9a799d71 5553
396e799c 5554 e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu);
021230d4 5555 /* must set new MTU before calling down or up */
9a799d71
AK		 5556 netdev->mtu = new_mtu;
5557
16b61beb
JF		 5558 hw->fc.high_water = FC_HIGH_WATER(max_frame);
5559 hw->fc.low_water = FC_LOW_WATER(max_frame);
5560
d4f80882
AV		 5561 if (netif_running(netdev))
5562 ixgbe_reinit_locked(adapter);
9a799d71
AK		 5563
5564 return 0;
5565}
5566
5567/**
5568 * ixgbe_open - Called when a network interface is made active
5569 * @netdev: network interface device structure
5570 *
5571 * Returns 0 on success, negative value on failure
5572 *
5573 * The open entry point is called when a network interface is made
5574 * active by the system (IFF_UP). At this point all resources needed
5575 * for transmit and receive operations are allocated, the interrupt
5576 * handler is registered with the OS, the watchdog timer is started,
5577 * and the stack is notified that the interface is ready.
5578 **/
5579static int ixgbe_open(struct net_device *netdev)
5580{
5581 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5582 int err;
4bebfaa5
AK		 5583
5584 /* disallow open during test */
5585 if (test_bit(__IXGBE_TESTING, &adapter->state))
5586 return -EBUSY;
9a799d71 5587
54386467
JB		 5588 netif_carrier_off(netdev);
5589
9a799d71
AK		 5590 /* allocate transmit descriptors */
5591 err = ixgbe_setup_all_tx_resources(adapter);
5592 if (err)
5593 goto err_setup_tx;
5594
9a799d71
AK		 5595 /* allocate receive descriptors */
5596 err = ixgbe_setup_all_rx_resources(adapter);
5597 if (err)
5598 goto err_setup_rx;
5599
5600 ixgbe_configure(adapter);
5601
021230d4 5602 err = ixgbe_request_irq(adapter);
9a799d71
AK		 5603 if (err)
5604 goto err_req_irq;
5605
9a799d71
AK		 5606 err = ixgbe_up_complete(adapter);
5607 if (err)
5608 goto err_up;
5609
d55b53ff
JK		 5610 netif_tx_start_all_queues(netdev);
5611
9a799d71
AK		 5612 return 0;
5613
5614err_up:
5eba3699 5615 ixgbe_release_hw_control(adapter);
9a799d71
AK		 5616 ixgbe_free_irq(adapter);
5617err_req_irq:
9a799d71 5618err_setup_rx:
a20a1199 5619 ixgbe_free_all_rx_resources(adapter);
9a799d71 5620err_setup_tx:
a20a1199 5621 ixgbe_free_all_tx_resources(adapter);
9a799d71
AK		 5622 ixgbe_reset(adapter);
5623
5624 return err;
5625}
5626
5627/**
5628 * ixgbe_close - Disables a network interface
5629 * @netdev: network interface device structure
5630 *
5631 * Returns 0, this is not allowed to fail
5632 *
5633 * The close entry point is called when an interface is de-activated
5634 * by the OS. The hardware is still under the drivers control, but
5635 * needs to be disabled. A global MAC reset is issued to stop the
5636 * hardware, and all transmit and receive resources are freed.
5637 **/
5638static int ixgbe_close(struct net_device *netdev)
5639{
5640 struct ixgbe_adapter *adapter = netdev_priv(netdev);
9a799d71
AK		 5641
5642 ixgbe_down(adapter);
5643 ixgbe_free_irq(adapter);
5644
5645 ixgbe_free_all_tx_resources(adapter);
5646 ixgbe_free_all_rx_resources(adapter);
5647
5eba3699 5648 ixgbe_release_hw_control(adapter);
9a799d71
AK		 5649
5650 return 0;
5651}
5652
b3c8b4ba
AD		 5653#ifdef CONFIG_PM
5654static int ixgbe_resume(struct pci_dev *pdev)
5655{
c60fbb00
AD		 5656 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
5657 struct net_device *netdev = adapter->netdev;
b3c8b4ba
AD		 5658 u32 err;
5659
5660 pci_set_power_state(pdev, PCI_D0);
5661 pci_restore_state(pdev);
656ab817
DS		 5662 /*
5663 * pci_restore_state clears dev->state_saved so call
5664 * pci_save_state to restore it.
5665 */
5666 pci_save_state(pdev);
9ce77666 5667
5668 err = pci_enable_device_mem(pdev);
b3c8b4ba 5669 if (err) {
849c4542 5670 e_dev_err("Cannot enable PCI device from suspend\n");
b3c8b4ba
AD		 5671 return err;
5672 }
5673 pci_set_master(pdev);
5674
dd4d8ca6 5675 pci_wake_from_d3(pdev, false);
b3c8b4ba
AD		 5676
5677 err = ixgbe_init_interrupt_scheme(adapter);
5678 if (err) {
849c4542 5679 e_dev_err("Cannot initialize interrupts for device\n");
b3c8b4ba
AD		 5680 return err;
5681 }
5682
b3c8b4ba
AD		 5683 ixgbe_reset(adapter);
5684
495dce12
WJP		 5685 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
5686
b3c8b4ba 5687 if (netif_running(netdev)) {
c60fbb00 5688 err = ixgbe_open(netdev);
b3c8b4ba
AD		 5689 if (err)
5690 return err;
5691 }
5692
5693 netif_device_attach(netdev);
5694
5695 return 0;
5696}
b3c8b4ba 5697#endif /* CONFIG_PM */
9d8d05ae
RW		 5698
5699static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
b3c8b4ba 5700{
c60fbb00
AD		 5701 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
5702 struct net_device *netdev = adapter->netdev;
e8e26350
PW		 5703 struct ixgbe_hw *hw = &adapter->hw;
5704 u32 ctrl, fctrl;
5705 u32 wufc = adapter->wol;
b3c8b4ba
AD		 5706#ifdef CONFIG_PM
5707 int retval = 0;
5708#endif
5709
5710 netif_device_detach(netdev);
5711
5712 if (netif_running(netdev)) {
5713 ixgbe_down(adapter);
5714 ixgbe_free_irq(adapter);
5715 ixgbe_free_all_tx_resources(adapter);
5716 ixgbe_free_all_rx_resources(adapter);
5717 }
b3c8b4ba 5718
5f5ae6fc 5719 ixgbe_clear_interrupt_scheme(adapter);
d033d526
JF		 5720#ifdef CONFIG_DCB
5721 kfree(adapter->ixgbe_ieee_pfc);
5722 kfree(adapter->ixgbe_ieee_ets);
5723#endif
5f5ae6fc 5724
b3c8b4ba
AD		 5725#ifdef CONFIG_PM
5726 retval = pci_save_state(pdev);
5727 if (retval)
5728 return retval;
4df10466 5729
b3c8b4ba 5730#endif
e8e26350
PW		 5731 if (wufc) {
5732 ixgbe_set_rx_mode(netdev);
b3c8b4ba 5733
e8e26350
PW		 5734 /* turn on all-multi mode if wake on multicast is enabled */
5735 if (wufc & IXGBE_WUFC_MC) {
5736 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
5737 fctrl |= IXGBE_FCTRL_MPE;
5738 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
5739 }
5740
5741 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
5742 ctrl |= IXGBE_CTRL_GIO_DIS;
5743 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
5744
5745 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc);
5746 } else {
5747 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0);
5748 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0);
5749 }
5750
bd508178
AD		 5751 switch (hw->mac.type) {
5752 case ixgbe_mac_82598EB:
dd4d8ca6 5753 pci_wake_from_d3(pdev, false);
bd508178
AD		 5754 break;
5755 case ixgbe_mac_82599EB:
b93a2226 5756 case ixgbe_mac_X540:
bd508178
AD		 5757 pci_wake_from_d3(pdev, !!wufc);
5758 break;
5759 default:
5760 break;
5761 }
b3c8b4ba 5762
9d8d05ae
RW		 5763 *enable_wake = !!wufc;
5764
b3c8b4ba
AD		 5765 ixgbe_release_hw_control(adapter);
5766
5767 pci_disable_device(pdev);
5768
9d8d05ae
RW		 5769 return 0;
5770}
5771
5772#ifdef CONFIG_PM
5773static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
5774{
5775 int retval;
5776 bool wake;
5777
5778 retval = __ixgbe_shutdown(pdev, &wake);
5779 if (retval)
5780 return retval;
5781
5782 if (wake) {
5783 pci_prepare_to_sleep(pdev);
5784 } else {
5785 pci_wake_from_d3(pdev, false);
5786 pci_set_power_state(pdev, PCI_D3hot);
5787 }
b3c8b4ba
AD		 5788
5789 return 0;
5790}
9d8d05ae 5791#endif /* CONFIG_PM */
b3c8b4ba
AD		 5792
5793static void ixgbe_shutdown(struct pci_dev *pdev)
5794{
9d8d05ae
RW		 5795 bool wake;
5796
5797 __ixgbe_shutdown(pdev, &wake);
5798
5799 if (system_state == SYSTEM_POWER_OFF) {
5800 pci_wake_from_d3(pdev, wake);
5801 pci_set_power_state(pdev, PCI_D3hot);
5802 }
b3c8b4ba
AD		 5803}
5804
9a799d71
AK		 5805/**
5806 * ixgbe_update_stats - Update the board statistics counters.
5807 * @adapter: board private structure
5808 **/
5809void ixgbe_update_stats(struct ixgbe_adapter *adapter)
5810{
2d86f139 5811 struct net_device *netdev = adapter->netdev;
9a799d71 5812 struct ixgbe_hw *hw = &adapter->hw;
5b7da515 5813 struct ixgbe_hw_stats *hwstats = &adapter->stats;
6f11eef7
AV		 5814 u64 total_mpc = 0;
5815 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
5b7da515
AD		 5816 u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0;
5817 u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0;
5818 u64 bytes = 0, packets = 0;
9a799d71 5819
d08935c2
DS		 5820 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
5821 test_bit(__IXGBE_RESETTING, &adapter->state))
5822 return;
5823
94b982b2 5824 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
f8212f97 5825 u64 rsc_count = 0;
94b982b2 5826 u64 rsc_flush = 0;
d51019a4
PW		 5827 for (i = 0; i < 16; i++)
5828 adapter->hw_rx_no_dma_resources +=
7ca647bd 5829 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
94b982b2 5830 for (i = 0; i < adapter->num_rx_queues; i++) {
5b7da515
AD		 5831 rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count;
5832 rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush;
94b982b2
MC		 5833 }
5834 adapter->rsc_total_count = rsc_count;
5835 adapter->rsc_total_flush = rsc_flush;
d51019a4
PW		 5836 }
5837
5b7da515
AD		 5838 for (i = 0; i < adapter->num_rx_queues; i++) {
5839 struct ixgbe_ring *rx_ring = adapter->rx_ring[i];
5840 non_eop_descs += rx_ring->rx_stats.non_eop_descs;
5841 alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed;
5842 alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed;
5843 bytes += rx_ring->stats.bytes;
5844 packets += rx_ring->stats.packets;
5845 }
5846 adapter->non_eop_descs = non_eop_descs;
5847 adapter->alloc_rx_page_failed = alloc_rx_page_failed;
5848 adapter->alloc_rx_buff_failed = alloc_rx_buff_failed;
5849 netdev->stats.rx_bytes = bytes;
5850 netdev->stats.rx_packets = packets;
5851
5852 bytes = 0;
5853 packets = 0;
7ca3bc58 5854 /* gather some stats to the adapter struct that are per queue */
5b7da515
AD		 5855 for (i = 0; i < adapter->num_tx_queues; i++) {
5856 struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
5857 restart_queue += tx_ring->tx_stats.restart_queue;
5858 tx_busy += tx_ring->tx_stats.tx_busy;
5859 bytes += tx_ring->stats.bytes;
5860 packets += tx_ring->stats.packets;
5861 }
eb985f09 5862 adapter->restart_queue = restart_queue;
5b7da515
AD		 5863 adapter->tx_busy = tx_busy;
5864 netdev->stats.tx_bytes = bytes;
5865 netdev->stats.tx_packets = packets;
7ca3bc58 5866
7ca647bd 5867 hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
6f11eef7
AV		 5868 for (i = 0; i < 8; i++) {
5869 /* for packet buffers not used, the register should read 0 */
5870 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
5871 missed_rx += mpc;
7ca647bd
JP		 5872 hwstats->mpc[i] += mpc;
5873 total_mpc += hwstats->mpc[i];
e8e26350 5874 if (hw->mac.type == ixgbe_mac_82598EB)
7ca647bd
JP		 5875 hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
5876 hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i));
5877 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i));
5878 hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i));
5879 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i));
bd508178
AD		 5880 switch (hw->mac.type) {
5881 case ixgbe_mac_82598EB:
7ca647bd
JP		 5882 hwstats->pxonrxc[i] +=
5883 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
bd508178
AD		 5884 break;
5885 case ixgbe_mac_82599EB:
b93a2226 5886 case ixgbe_mac_X540:
bd508178
AD		 5887 hwstats->pxonrxc[i] +=
5888 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
bd508178
AD		 5889 break;
5890 default:
5891 break;
e8e26350 5892 }
7ca647bd
JP		 5893 hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
5894 hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
6f11eef7 5895 }
7ca647bd 5896 hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
6f11eef7 5897 /* work around hardware counting issue */
7ca647bd 5898 hwstats->gprc -= missed_rx;
6f11eef7 5899
c84d324c
JF		 5900 ixgbe_update_xoff_received(adapter);
5901
6f11eef7 5902 /* 82598 hardware only has a 32 bit counter in the high register */
bd508178
AD		 5903 switch (hw->mac.type) {
5904 case ixgbe_mac_82598EB:
5905 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
bd508178
AD		 5906 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
5907 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
5908 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH);
5909 break;
b93a2226 5910 case ixgbe_mac_X540:
58f6bcf9
ET		 5911 /* OS2BMC stats are X540 only*/
5912 hwstats->o2bgptc += IXGBE_READ_REG(hw, IXGBE_O2BGPTC);
5913 hwstats->o2bspc += IXGBE_READ_REG(hw, IXGBE_O2BSPC);
5914 hwstats->b2ospc += IXGBE_READ_REG(hw, IXGBE_B2OSPC);
5915 hwstats->b2ogprc += IXGBE_READ_REG(hw, IXGBE_B2OGPRC);
5916 case ixgbe_mac_82599EB:
7ca647bd 5917 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL);
bd508178 5918 IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */
7ca647bd 5919 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL);
bd508178 5920 IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */
7ca647bd 5921 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL);
bd508178 5922 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */
7ca647bd 5923 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
7ca647bd
JP		 5924 hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
5925 hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
6d45522c 5926#ifdef IXGBE_FCOE
7ca647bd
JP		 5927 hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC);
5928 hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC);
5929 hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC);
5930 hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC);
5931 hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC);
5932 hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC);
6d45522c 5933#endif /* IXGBE_FCOE */
bd508178
AD		 5934 break;
5935 default:
5936 break;
e8e26350 5937 }
9a799d71 5938 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
7ca647bd
JP		 5939 hwstats->bprc += bprc;
5940 hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
e8e26350 5941 if (hw->mac.type == ixgbe_mac_82598EB)
7ca647bd
JP		 5942 hwstats->mprc -= bprc;
5943 hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC);
5944 hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64);
5945 hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127);
5946 hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255);
5947 hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
5948 hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
5949 hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
5950 hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
6f11eef7 5951 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
7ca647bd 5952 hwstats->lxontxc += lxon;
6f11eef7 5953 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
7ca647bd
JP		 5954 hwstats->lxofftxc += lxoff;
5955 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
5956 hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
5957 hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
6f11eef7
AV		 5958 /*
5959 * 82598 errata - tx of flow control packets is included in tx counters
5960 */
5961 xon_off_tot = lxon + lxoff;
7ca647bd
JP		 5962 hwstats->gptc -= xon_off_tot;
5963 hwstats->mptc -= xon_off_tot;
5964 hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
5965 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
5966 hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
5967 hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
5968 hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
5969 hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
5970 hwstats->ptc64 -= xon_off_tot;
5971 hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
5972 hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
5973 hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
5974 hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
5975 hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
5976 hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
9a799d71
AK		 5977
5978 /* Fill out the OS statistics structure */
7ca647bd 5979 netdev->stats.multicast = hwstats->mprc;
9a799d71
AK		 5980
5981 /* Rx Errors */
7ca647bd 5982 netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec;
2d86f139 5983 netdev->stats.rx_dropped = 0;
7ca647bd
JP		 5984 netdev->stats.rx_length_errors = hwstats->rlec;
5985 netdev->stats.rx_crc_errors = hwstats->crcerrs;
2d86f139 5986 netdev->stats.rx_missed_errors = total_mpc;
9a799d71
AK		 5987}
5988
5989/**
d034acf1
AD		 5990 * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table
5991 * @adapter - pointer to the device adapter structure
9a799d71 5992 **/
d034acf1 5993static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter *adapter)
9a799d71 5994{
cf8280ee 5995 struct ixgbe_hw *hw = &adapter->hw;
fe49f04a 5996 int i;
cf8280ee 5997
d034acf1
AD		 5998 if (!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT))
5999 return;
6000
6001 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
22d5a71b 6002
d034acf1 6003 /* if interface is down do nothing */
fe49f04a 6004 if (test_bit(__IXGBE_DOWN, &adapter->state))
d034acf1
AD		 6005 return;
6006
6007 /* do nothing if we are not using signature filters */
6008 if (!(adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE))
6009 return;
6010
6011 adapter->fdir_overflow++;
6012
93c52dd0
AD		 6013 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
6014 for (i = 0; i < adapter->num_tx_queues; i++)
6015 set_bit(__IXGBE_TX_FDIR_INIT_DONE,
f0f9778d 6016 &(adapter->tx_ring[i]->state));
d034acf1
AD		 6017 /* re-enable flow director interrupts */
6018 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR);
93c52dd0
AD		 6019 } else {
6020 e_err(probe, "failed to finish FDIR re-initialization, "
6021 "ignored adding FDIR ATR filters\n");
6022 }
93c52dd0
AD		 6023}
6024
6025/**
6026 * ixgbe_check_hang_subtask - check for hung queues and dropped interrupts
6027 * @adapter - pointer to the device adapter structure
6028 *
6029 * This function serves two purposes. First it strobes the interrupt lines
6030 * in order to make certain interrupts are occuring. Secondly it sets the
6031 * bits needed to check for TX hangs. As a result we should immediately
6032 * determine if a hang has occured.
6033 */
6034static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter)
9a799d71 6035{
cf8280ee 6036 struct ixgbe_hw *hw = &adapter->hw;
fe49f04a
AD		 6037 u64 eics = 0;
6038 int i;
cf8280ee 6039
93c52dd0
AD		 6040 /* If we're down or resetting, just bail */
6041 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
6042 test_bit(__IXGBE_RESETTING, &adapter->state))
6043 return;
22d5a71b 6044
93c52dd0
AD		 6045 /* Force detection of hung controller */
6046 if (netif_carrier_ok(adapter->netdev)) {
6047 for (i = 0; i < adapter->num_tx_queues; i++)
6048 set_check_for_tx_hang(adapter->tx_ring[i]);
6049 }
22d5a71b 6050
fe49f04a
AD		 6051 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
6052 /*
6053 * for legacy and MSI interrupts don't set any bits
6054 * that are enabled for EIAM, because this operation
6055 * would set *both* EIMS and EICS for any bit in EIAM
6056 */
6057 IXGBE_WRITE_REG(hw, IXGBE_EICS,
6058 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER));
93c52dd0
AD		 6059 } else {
6060 /* get one bit for every active tx/rx interrupt vector */
6061 for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) {
6062 struct ixgbe_q_vector *qv = adapter->q_vector[i];
6063 if (qv->rxr_count || qv->txr_count)
6064 eics |= ((u64)1 << i);
6065 }
cf8280ee 6066 }
9a799d71 6067
93c52dd0 6068 /* Cause software interrupt to ensure rings are cleaned */
fe49f04a
AD		 6069 ixgbe_irq_rearm_queues(adapter, eics);
6070
cf8280ee
JB		 6071}
6072
e8e26350 6073/**
93c52dd0
AD		 6074 * ixgbe_watchdog_update_link - update the link status
6075 * @adapter - pointer to the device adapter structure
6076 * @link_speed - pointer to a u32 to store the link_speed
e8e26350 6077 **/
93c52dd0 6078static void ixgbe_watchdog_update_link(struct ixgbe_adapter *adapter)
e8e26350 6079{
e8e26350 6080 struct ixgbe_hw *hw = &adapter->hw;
93c52dd0
AD		 6081 u32 link_speed = adapter->link_speed;
6082 bool link_up = adapter->link_up;
c4cf55e5 6083 int i;
e8e26350 6084
93c52dd0
AD		 6085 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE))
6086 return;
6087
6088 if (hw->mac.ops.check_link) {
6089 hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
c4cf55e5 6090 } else {
93c52dd0
AD		 6091 /* always assume link is up, if no check link function */
6092 link_speed = IXGBE_LINK_SPEED_10GB_FULL;
6093 link_up = true;
c4cf55e5 6094 }
93c52dd0
AD		 6095 if (link_up) {
6096 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6097 for (i = 0; i < MAX_TRAFFIC_CLASS; i++)
6098 hw->mac.ops.fc_enable(hw, i);
6099 } else {
6100 hw->mac.ops.fc_enable(hw, 0);
6101 }
6102 }
6103
6104 if (link_up ||
6105 time_after(jiffies, (adapter->link_check_timeout +
6106 IXGBE_TRY_LINK_TIMEOUT))) {
6107 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
6108 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC);
6109 IXGBE_WRITE_FLUSH(hw);
6110 }
6111
6112 adapter->link_up = link_up;
6113 adapter->link_speed = link_speed;
e8e26350
PW		 6114}
6115
6116/**
93c52dd0
AD		 6117 * ixgbe_watchdog_link_is_up - update netif_carrier status and
6118 * print link up message
6119 * @adapter - pointer to the device adapter structure
e8e26350 6120 **/
93c52dd0 6121static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter)
e8e26350 6122{
93c52dd0 6123 struct net_device *netdev = adapter->netdev;
e8e26350 6124 struct ixgbe_hw *hw = &adapter->hw;
93c52dd0
AD		 6125 u32 link_speed = adapter->link_speed;
6126 bool flow_rx, flow_tx;
e8e26350 6127
93c52dd0
AD		 6128 /* only continue if link was previously down */
6129 if (netif_carrier_ok(netdev))
a985b6c3 6130 return;
63d6e1d8 6131
93c52dd0 6132 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP;
63d6e1d8 6133
93c52dd0
AD		 6134 switch (hw->mac.type) {
6135 case ixgbe_mac_82598EB: {
6136 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
6137 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS);
6138 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE);
6139 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X);
6140 }
6141 break;
6142 case ixgbe_mac_X540:
6143 case ixgbe_mac_82599EB: {
6144 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN);
6145 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
6146 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE);
6147 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X);
6148 }
6149 break;
6150 default:
6151 flow_tx = false;
6152 flow_rx = false;
6153 break;
e8e26350 6154 }
93c52dd0
AD		 6155 e_info(drv, "NIC Link is Up %s, Flow Control: %s\n",
6156 (link_speed == IXGBE_LINK_SPEED_10GB_FULL ?
6157 "10 Gbps" :
6158 (link_speed == IXGBE_LINK_SPEED_1GB_FULL ?
6159 "1 Gbps" :
6160 (link_speed == IXGBE_LINK_SPEED_100_FULL ?
6161 "100 Mbps" :
6162 "unknown speed"))),
6163 ((flow_rx && flow_tx) ? "RX/TX" :
6164 (flow_rx ? "RX" :
6165 (flow_tx ? "TX" : "None"))));
e8e26350 6166
93c52dd0
AD		 6167 netif_carrier_on(netdev);
6168#ifdef HAVE_IPLINK_VF_CONFIG
6169 ixgbe_check_vf_rate_limit(adapter);
6170#endif /* HAVE_IPLINK_VF_CONFIG */
e8e26350
PW		 6171}
6172
c4cf55e5 6173/**
93c52dd0
AD		 6174 * ixgbe_watchdog_link_is_down - update netif_carrier status and
6175 * print link down message
6176 * @adapter - pointer to the adapter structure
c4cf55e5 6177 **/
93c52dd0 6178static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter* adapter)
c4cf55e5 6179{
cf8280ee 6180 struct net_device *netdev = adapter->netdev;
c4cf55e5 6181 struct ixgbe_hw *hw = &adapter->hw;
10eec955 6182
93c52dd0
AD		 6183 adapter->link_up = false;
6184 adapter->link_speed = 0;
cf8280ee 6185
93c52dd0
AD		 6186 /* only continue if link was up previously */
6187 if (!netif_carrier_ok(netdev))
6188 return;
264857b8 6189
93c52dd0
AD		 6190 /* poll for SFP+ cable when link is down */
6191 if (ixgbe_is_sfp(hw) && hw->mac.type == ixgbe_mac_82598EB)
6192 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;
9a799d71 6193
93c52dd0
AD		 6194 e_info(drv, "NIC Link is Down\n");
6195 netif_carrier_off(netdev);
6196}
e8e26350 6197
93c52dd0
AD		 6198/**
6199 * ixgbe_watchdog_flush_tx - flush queues on link down
6200 * @adapter - pointer to the device adapter structure
6201 **/
6202static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter *adapter)
6203{
c4cf55e5 6204 int i;
93c52dd0 6205 int some_tx_pending = 0;
c4cf55e5 6206
93c52dd0 6207 if (!netif_carrier_ok(adapter->netdev)) {
bc59fcda 6208 for (i = 0; i < adapter->num_tx_queues; i++) {
93c52dd0 6209 struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
bc59fcda
NS		 6210 if (tx_ring->next_to_use != tx_ring->next_to_clean) {
6211 some_tx_pending = 1;
6212 break;
6213 }
6214 }
6215
6216 if (some_tx_pending) {
6217 /* We've lost link, so the controller stops DMA,
6218 * but we've got queued Tx work that's never going
6219 * to get done, so reset controller to flush Tx.
6220 * (Do the reset outside of interrupt context).
6221 */
c83c6cbd 6222 adapter->flags2 |= IXGBE_FLAG2_RESET_REQUESTED;
bc59fcda 6223 }
c4cf55e5 6224 }
c4cf55e5
PWJ		 6225}
6226
a985b6c3
GR		 6227static void ixgbe_spoof_check(struct ixgbe_adapter *adapter)
6228{
6229 u32 ssvpc;
6230
6231 /* Do not perform spoof check for 82598 */
6232 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
6233 return;
6234
6235 ssvpc = IXGBE_READ_REG(&adapter->hw, IXGBE_SSVPC);
6236
6237 /*
6238 * ssvpc register is cleared on read, if zero then no
6239 * spoofed packets in the last interval.
6240 */
6241 if (!ssvpc)
6242 return;
6243
6244 e_warn(drv, "%d Spoofed packets detected\n", ssvpc);
6245}
6246
93c52dd0
AD		 6247/**
6248 * ixgbe_watchdog_subtask - check and bring link up
6249 * @adapter - pointer to the device adapter structure
6250 **/
6251static void ixgbe_watchdog_subtask(struct ixgbe_adapter *adapter)
6252{
6253 /* if interface is down do nothing */
6254 if (test_bit(__IXGBE_DOWN, &adapter->state))
6255 return;
6256
6257 ixgbe_watchdog_update_link(adapter);
6258
6259 if (adapter->link_up)
6260 ixgbe_watchdog_link_is_up(adapter);
6261 else
6262 ixgbe_watchdog_link_is_down(adapter);
bc59fcda 6263
a985b6c3 6264 ixgbe_spoof_check(adapter);
9a799d71 6265 ixgbe_update_stats(adapter);
93c52dd0
AD		 6266
6267 ixgbe_watchdog_flush_tx(adapter);
9a799d71 6268}
10eec955 6269
cf8280ee 6270/**
7086400d
AD		 6271 * ixgbe_sfp_detection_subtask - poll for SFP+ cable
6272 * @adapter - the ixgbe adapter structure
cf8280ee 6273 **/
7086400d 6274static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter *adapter)
cf8280ee 6275{
cf8280ee 6276 struct ixgbe_hw *hw = &adapter->hw;
7086400d 6277 s32 err;
cf8280ee 6278
7086400d
AD		 6279 /* not searching for SFP so there is nothing to do here */
6280 if (!(adapter->flags2 & IXGBE_FLAG2_SEARCH_FOR_SFP) &&
6281 !(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET))
6282 return;
10eec955 6283
7086400d
AD		 6284 /* someone else is in init, wait until next service event */
6285 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
6286 return;
cf8280ee 6287
7086400d
AD		 6288 err = hw->phy.ops.identify_sfp(hw);
6289 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED)
6290 goto sfp_out;
264857b8 6291
7086400d
AD		 6292 if (err == IXGBE_ERR_SFP_NOT_PRESENT) {
6293 /* If no cable is present, then we need to reset
6294 * the next time we find a good cable. */
6295 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
cf8280ee 6296 }
9a799d71 6297
7086400d
AD		 6298 /* exit on error */
6299 if (err)
6300 goto sfp_out;
e8e26350 6301
7086400d
AD		 6302 /* exit if reset not needed */
6303 if (!(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET))
6304 goto sfp_out;
9a799d71 6305
7086400d 6306 adapter->flags2 &= ~IXGBE_FLAG2_SFP_NEEDS_RESET;
bc59fcda 6307
7086400d
AD		 6308 /*
6309 * A module may be identified correctly, but the EEPROM may not have
6310 * support for that module. setup_sfp() will fail in that case, so
6311 * we should not allow that module to load.
6312 */
6313 if (hw->mac.type == ixgbe_mac_82598EB)
6314 err = hw->phy.ops.reset(hw);
6315 else
6316 err = hw->mac.ops.setup_sfp(hw);
6317
6318 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED)
6319 goto sfp_out;
6320
6321 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG;
6322 e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type);
6323
6324sfp_out:
6325 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
6326
6327 if ((err == IXGBE_ERR_SFP_NOT_SUPPORTED) &&
6328 (adapter->netdev->reg_state == NETREG_REGISTERED)) {
6329 e_dev_err("failed to initialize because an unsupported "
6330 "SFP+ module type was detected.\n");
6331 e_dev_err("Reload the driver after installing a "
6332 "supported module.\n");
6333 unregister_netdev(adapter->netdev);
bc59fcda 6334 }
7086400d 6335}
bc59fcda 6336
7086400d
AD		 6337/**
6338 * ixgbe_sfp_link_config_subtask - set up link SFP after module install
6339 * @adapter - the ixgbe adapter structure
6340 **/
6341static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter *adapter)
6342{
6343 struct ixgbe_hw *hw = &adapter->hw;
6344 u32 autoneg;
6345 bool negotiation;
6346
6347 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_CONFIG))
6348 return;
6349
6350 /* someone else is in init, wait until next service event */
6351 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
6352 return;
6353
6354 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG;
6355
6356 autoneg = hw->phy.autoneg_advertised;
6357 if ((!autoneg) && (hw->mac.ops.get_link_capabilities))
6358 hw->mac.ops.get_link_capabilities(hw, &autoneg, &negotiation);
6359 hw->mac.autotry_restart = false;
6360 if (hw->mac.ops.setup_link)
6361 hw->mac.ops.setup_link(hw, autoneg, negotiation, true);
6362
6363 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
6364 adapter->link_check_timeout = jiffies;
6365 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
6366}
6367
6368/**
6369 * ixgbe_service_timer - Timer Call-back
6370 * @data: pointer to adapter cast into an unsigned long
6371 **/
6372static void ixgbe_service_timer(unsigned long data)
6373{
6374 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
6375 unsigned long next_event_offset;
6376
6377 /* poll faster when waiting for link */
6378 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)
6379 next_event_offset = HZ / 10;
6380 else
6381 next_event_offset = HZ * 2;
6382
6383 /* Reset the timer */
6384 mod_timer(&adapter->service_timer, next_event_offset + jiffies);
6385
6386 ixgbe_service_event_schedule(adapter);
6387}
6388
c83c6cbd
AD		 6389static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter)
6390{
6391 if (!(adapter->flags2 & IXGBE_FLAG2_RESET_REQUESTED))
6392 return;
6393
6394 adapter->flags2 &= ~IXGBE_FLAG2_RESET_REQUESTED;
6395
6396 /* If we're already down or resetting, just bail */
6397 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
6398 test_bit(__IXGBE_RESETTING, &adapter->state))
6399 return;
6400
6401 ixgbe_dump(adapter);
6402 netdev_err(adapter->netdev, "Reset adapter\n");
6403 adapter->tx_timeout_count++;
6404
6405 ixgbe_reinit_locked(adapter);
6406}
6407
7086400d
AD		 6408/**
6409 * ixgbe_service_task - manages and runs subtasks
6410 * @work: pointer to work_struct containing our data
6411 **/
6412static void ixgbe_service_task(struct work_struct *work)
6413{
6414 struct ixgbe_adapter *adapter = container_of(work,
6415 struct ixgbe_adapter,
6416 service_task);
6417
c83c6cbd 6418 ixgbe_reset_subtask(adapter);
7086400d
AD		 6419 ixgbe_sfp_detection_subtask(adapter);
6420 ixgbe_sfp_link_config_subtask(adapter);
f0f9778d 6421 ixgbe_check_overtemp_subtask(adapter);
93c52dd0 6422 ixgbe_watchdog_subtask(adapter);
d034acf1 6423 ixgbe_fdir_reinit_subtask(adapter);
93c52dd0 6424 ixgbe_check_hang_subtask(adapter);
7086400d
AD		 6425
6426 ixgbe_service_event_complete(adapter);
9a799d71
AK		 6427}
6428
9a799d71 6429static int ixgbe_tso(struct ixgbe_adapter *adapter,
e8e9f696 6430 struct ixgbe_ring *tx_ring, struct sk_buff *skb,
5e09a105 6431 u32 tx_flags, u8 *hdr_len, __be16 protocol)
9a799d71
AK		 6432{
6433 struct ixgbe_adv_tx_context_desc *context_desc;
6434 unsigned int i;
6435 int err;
6436 struct ixgbe_tx_buffer *tx_buffer_info;
9f8cdf4f
JB		 6437 u32 vlan_macip_lens = 0, type_tucmd_mlhl;
6438 u32 mss_l4len_idx, l4len;
9a799d71
AK		 6439
6440 if (skb_is_gso(skb)) {
6441 if (skb_header_cloned(skb)) {
6442 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
6443 if (err)
6444 return err;
6445 }
6446 l4len = tcp_hdrlen(skb);
6447 *hdr_len += l4len;
6448
5e09a105 6449 if (protocol == htons(ETH_P_IP)) {
9a799d71
AK		 6450 struct iphdr *iph = ip_hdr(skb);
6451 iph->tot_len = 0;
6452 iph->check = 0;
6453 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
e8e9f696
JP		 6454 iph->daddr, 0,
6455 IPPROTO_TCP,
6456 0);
8e1e8a47 6457 } else if (skb_is_gso_v6(skb)) {
9a799d71
AK		 6458 ipv6_hdr(skb)->payload_len = 0;
6459 tcp_hdr(skb)->check =
6460 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
e8e9f696
JP		 6461 &ipv6_hdr(skb)->daddr,
6462 0, IPPROTO_TCP, 0);
9a799d71
AK		 6463 }
6464
6465 i = tx_ring->next_to_use;
6466
6467 tx_buffer_info = &tx_ring->tx_buffer_info[i];
31f05a2d 6468 context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i);
9a799d71
AK		 6469
6470 /* VLAN MACLEN IPLEN */
6471 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
6472 vlan_macip_lens |=
6473 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
6474 vlan_macip_lens |= ((skb_network_offset(skb)) <<
e8e9f696 6475 IXGBE_ADVTXD_MACLEN_SHIFT);
9a799d71
AK		 6476 *hdr_len += skb_network_offset(skb);
6477 vlan_macip_lens |=
6478 (skb_transport_header(skb) - skb_network_header(skb));
6479 *hdr_len +=
6480 (skb_transport_header(skb) - skb_network_header(skb));
6481 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
6482 context_desc->seqnum_seed = 0;
6483
6484 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
9f8cdf4f 6485 type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT |
e8e9f696 6486 IXGBE_ADVTXD_DTYP_CTXT);
9a799d71 6487
5e09a105 6488 if (protocol == htons(ETH_P_IP))
9a799d71
AK		 6489 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
6490 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
6491 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
6492
6493 /* MSS L4LEN IDX */
9f8cdf4f 6494 mss_l4len_idx =
9a799d71
AK		 6495 (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT);
6496 mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT);
4eeae6fd
PW		 6497 /* use index 1 for TSO */
6498 mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
9a799d71
AK		 6499 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
6500
6501 tx_buffer_info->time_stamp = jiffies;
6502 tx_buffer_info->next_to_watch = i;
6503
6504 i++;
6505 if (i == tx_ring->count)
6506 i = 0;
6507 tx_ring->next_to_use = i;
6508
6509 return true;
6510 }
6511 return false;
6512}
6513
5e09a105
HZ		 6514static u32 ixgbe_psum(struct ixgbe_adapter *adapter, struct sk_buff *skb,
6515 __be16 protocol)
7ca647bd
JP		 6516{
6517 u32 rtn = 0;
7ca647bd
JP		 6518
6519 switch (protocol) {
6520 case cpu_to_be16(ETH_P_IP):
6521 rtn |= IXGBE_ADVTXD_TUCMD_IPV4;
6522 switch (ip_hdr(skb)->protocol) {
6523 case IPPROTO_TCP:
6524 rtn |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
6525 break;
6526 case IPPROTO_SCTP:
6527 rtn |= IXGBE_ADVTXD_TUCMD_L4T_SCTP;
6528 break;
6529 }
6530 break;
6531 case cpu_to_be16(ETH_P_IPV6):
6532 /* XXX what about other V6 headers?? */
6533 switch (ipv6_hdr(skb)->nexthdr) {
6534 case IPPROTO_TCP:
6535 rtn |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
6536 break;
6537 case IPPROTO_SCTP:
6538 rtn |= IXGBE_ADVTXD_TUCMD_L4T_SCTP;
6539 break;
6540 }
6541 break;
6542 default:
6543 if (unlikely(net_ratelimit()))
6544 e_warn(probe, "partial checksum but proto=%x!\n",
5e09a105 6545 protocol);
7ca647bd
JP		 6546 break;
6547 }
6548
6549 return rtn;
6550}
6551
9a799d71 6552static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter,
e8e9f696 6553 struct ixgbe_ring *tx_ring,
5e09a105
HZ		 6554 struct sk_buff *skb, u32 tx_flags,
6555 __be16 protocol)
9a799d71
AK		 6556{
6557 struct ixgbe_adv_tx_context_desc *context_desc;
6558 unsigned int i;
6559 struct ixgbe_tx_buffer *tx_buffer_info;
6560 u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0;
6561
6562 if (skb->ip_summed == CHECKSUM_PARTIAL ||
6563 (tx_flags & IXGBE_TX_FLAGS_VLAN)) {
6564 i = tx_ring->next_to_use;
6565 tx_buffer_info = &tx_ring->tx_buffer_info[i];
31f05a2d 6566 context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i);
9a799d71
AK		 6567
6568 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
6569 vlan_macip_lens |=
6570 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
6571 vlan_macip_lens |= (skb_network_offset(skb) <<
e8e9f696 6572 IXGBE_ADVTXD_MACLEN_SHIFT);
9a799d71
AK		 6573 if (skb->ip_summed == CHECKSUM_PARTIAL)
6574 vlan_macip_lens |= (skb_transport_header(skb) -
e8e9f696 6575 skb_network_header(skb));
9a799d71
AK		 6576
6577 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
6578 context_desc->seqnum_seed = 0;
6579
6580 type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT |
e8e9f696 6581 IXGBE_ADVTXD_DTYP_CTXT);
9a799d71 6582
7ca647bd 6583 if (skb->ip_summed == CHECKSUM_PARTIAL)
5e09a105 6584 type_tucmd_mlhl |= ixgbe_psum(adapter, skb, protocol);
9a799d71
AK		 6585
6586 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
4eeae6fd 6587 /* use index zero for tx checksum offload */
9a799d71
AK		 6588 context_desc->mss_l4len_idx = 0;
6589
6590 tx_buffer_info->time_stamp = jiffies;
6591 tx_buffer_info->next_to_watch = i;
9f8cdf4f 6592
9a799d71
AK		 6593 i++;
6594 if (i == tx_ring->count)
6595 i = 0;
6596 tx_ring->next_to_use = i;
6597
6598 return true;
6599 }
9f8cdf4f 6600
9a799d71
AK		 6601 return false;
6602}
6603
6604static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
e8e9f696
JP		 6605 struct ixgbe_ring *tx_ring,
6606 struct sk_buff *skb, u32 tx_flags,
8ad494b0 6607 unsigned int first, const u8 hdr_len)
9a799d71 6608{
b6ec895e 6609 struct device *dev = tx_ring->dev;
9a799d71 6610 struct ixgbe_tx_buffer *tx_buffer_info;
eacd73f7
YZ		 6611 unsigned int len;
6612 unsigned int total = skb->len;
9a799d71
AK		 6613 unsigned int offset = 0, size, count = 0, i;
6614 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
6615 unsigned int f;
8ad494b0
AD		 6616 unsigned int bytecount = skb->len;
6617 u16 gso_segs = 1;
9a799d71
AK		 6618
6619 i = tx_ring->next_to_use;
6620
eacd73f7
YZ		 6621 if (tx_flags & IXGBE_TX_FLAGS_FCOE)
6622 /* excluding fcoe_crc_eof for FCoE */
6623 total -= sizeof(struct fcoe_crc_eof);
6624
6625 len = min(skb_headlen(skb), total);
9a799d71
AK		 6626 while (len) {
6627 tx_buffer_info = &tx_ring->tx_buffer_info[i];
6628 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
6629
6630 tx_buffer_info->length = size;
e5a43549 6631 tx_buffer_info->mapped_as_page = false;
b6ec895e 6632 tx_buffer_info->dma = dma_map_single(dev,
e5a43549 6633 skb->data + offset,
1b507730 6634 size, DMA_TO_DEVICE);
b6ec895e 6635 if (dma_mapping_error(dev, tx_buffer_info->dma))
e5a43549 6636 goto dma_error;
9a799d71
AK		 6637 tx_buffer_info->time_stamp = jiffies;
6638 tx_buffer_info->next_to_watch = i;
6639
6640 len -= size;
eacd73f7 6641 total -= size;
9a799d71
AK		 6642 offset += size;
6643 count++;
44df32c5
AD		 6644
6645 if (len) {
6646 i++;
6647 if (i == tx_ring->count)
6648 i = 0;
6649 }
9a799d71
AK		 6650 }
6651
6652 for (f = 0; f < nr_frags; f++) {
6653 struct skb_frag_struct *frag;
6654
6655 frag = &skb_shinfo(skb)->frags[f];
eacd73f7 6656 len = min((unsigned int)frag->size, total);
e5a43549 6657 offset = frag->page_offset;
9a799d71
AK		 6658
6659 while (len) {
44df32c5
AD		 6660 i++;
6661 if (i == tx_ring->count)
6662 i = 0;
6663
9a799d71
AK		 6664 tx_buffer_info = &tx_ring->tx_buffer_info[i];
6665 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
6666
6667 tx_buffer_info->length = size;
b6ec895e 6668 tx_buffer_info->dma = dma_map_page(dev,
e5a43549
AD		 6669 frag->page,
6670 offset, size,
1b507730 6671 DMA_TO_DEVICE);
e5a43549 6672 tx_buffer_info->mapped_as_page = true;
b6ec895e 6673 if (dma_mapping_error(dev, tx_buffer_info->dma))
e5a43549 6674 goto dma_error;
9a799d71
AK		 6675 tx_buffer_info->time_stamp = jiffies;
6676 tx_buffer_info->next_to_watch = i;
6677
6678 len -= size;
eacd73f7 6679 total -= size;
9a799d71
AK		 6680 offset += size;
6681 count++;
9a799d71 6682 }
eacd73f7
YZ		 6683 if (total == 0)
6684 break;
9a799d71 6685 }
44df32c5 6686
8ad494b0
AD		 6687 if (tx_flags & IXGBE_TX_FLAGS_TSO)
6688 gso_segs = skb_shinfo(skb)->gso_segs;
6689#ifdef IXGBE_FCOE
6690 /* adjust for FCoE Sequence Offload */
6691 else if (tx_flags & IXGBE_TX_FLAGS_FSO)
6692 gso_segs = DIV_ROUND_UP(skb->len - hdr_len,
6693 skb_shinfo(skb)->gso_size);
6694#endif /* IXGBE_FCOE */
6695 bytecount += (gso_segs - 1) * hdr_len;
6696
6697 /* multiply data chunks by size of headers */
6698 tx_ring->tx_buffer_info[i].bytecount = bytecount;
6699 tx_ring->tx_buffer_info[i].gso_segs = gso_segs;
9a799d71
AK		 6700 tx_ring->tx_buffer_info[i].skb = skb;
6701 tx_ring->tx_buffer_info[first].next_to_watch = i;
6702
e5a43549
AD		 6703 return count;
6704
6705dma_error:
849c4542 6706 e_dev_err("TX DMA map failed\n");
e5a43549
AD		 6707
6708 /* clear timestamp and dma mappings for failed tx_buffer_info map */
6709 tx_buffer_info->dma = 0;
6710 tx_buffer_info->time_stamp = 0;
6711 tx_buffer_info->next_to_watch = 0;
c1fa347f
RK		 6712 if (count)
6713 count--;
e5a43549
AD		 6714
6715 /* clear timestamp and dma mappings for remaining portion of packet */
c1fa347f 6716 while (count--) {
e8e9f696 6717 if (i == 0)
e5a43549 6718 i += tx_ring->count;
c1fa347f 6719 i--;
e5a43549 6720 tx_buffer_info = &tx_ring->tx_buffer_info[i];
b6ec895e 6721 ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer_info);
e5a43549
AD		 6722 }
6723
e44d38e1 6724 return 0;
9a799d71
AK		 6725}
6726
84ea2591 6727static void ixgbe_tx_queue(struct ixgbe_ring *tx_ring,
e8e9f696 6728 int tx_flags, int count, u32 paylen, u8 hdr_len)
9a799d71
AK		 6729{
6730 union ixgbe_adv_tx_desc *tx_desc = NULL;
6731 struct ixgbe_tx_buffer *tx_buffer_info;
6732 u32 olinfo_status = 0, cmd_type_len = 0;
6733 unsigned int i;
6734 u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS;
6735
6736 cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA;
6737
6738 cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
6739
6740 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
6741 cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE;
6742
6743 if (tx_flags & IXGBE_TX_FLAGS_TSO) {
6744 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
6745
6746 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
e8e9f696 6747 IXGBE_ADVTXD_POPTS_SHIFT;
9a799d71 6748
4eeae6fd
PW		 6749 /* use index 1 context for tso */
6750 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
9a799d71
AK		 6751 if (tx_flags & IXGBE_TX_FLAGS_IPV4)
6752 olinfo_status |= IXGBE_TXD_POPTS_IXSM <<
e8e9f696 6753 IXGBE_ADVTXD_POPTS_SHIFT;
9a799d71
AK		 6754
6755 } else if (tx_flags & IXGBE_TX_FLAGS_CSUM)
6756 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
e8e9f696 6757 IXGBE_ADVTXD_POPTS_SHIFT;
9a799d71 6758
eacd73f7
YZ		 6759 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
6760 olinfo_status |= IXGBE_ADVTXD_CC;
6761 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
6762 if (tx_flags & IXGBE_TX_FLAGS_FSO)
6763 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
6764 }
6765
9a799d71
AK		 6766 olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
6767
6768 i = tx_ring->next_to_use;
6769 while (count--) {
6770 tx_buffer_info = &tx_ring->tx_buffer_info[i];
31f05a2d 6771 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
9a799d71
AK		 6772 tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma);
6773 tx_desc->read.cmd_type_len =
e8e9f696 6774 cpu_to_le32(cmd_type_len | tx_buffer_info->length);
9a799d71 6775 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
9a799d71
AK		 6776 i++;
6777 if (i == tx_ring->count)
6778 i = 0;
6779 }
6780
6781 tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd);
6782
6783 /*
6784 * Force memory writes to complete before letting h/w
6785 * know there are new descriptors to fetch. (Only
6786 * applicable for weak-ordered memory model archs,
6787 * such as IA-64).
6788 */
6789 wmb();
6790
6791 tx_ring->next_to_use = i;
84ea2591 6792 writel(i, tx_ring->tail);
9a799d71
AK		 6793}
6794
69830529
AD		 6795static void ixgbe_atr(struct ixgbe_ring *ring, struct sk_buff *skb,
6796 u32 tx_flags, __be16 protocol)
6797{
6798 struct ixgbe_q_vector *q_vector = ring->q_vector;
6799 union ixgbe_atr_hash_dword input = { .dword = 0 };
6800 union ixgbe_atr_hash_dword common = { .dword = 0 };
6801 union {
6802 unsigned char *network;
6803 struct iphdr *ipv4;
6804 struct ipv6hdr *ipv6;
6805 } hdr;
ee9e0f0b 6806 struct tcphdr *th;
905e4a41 6807 __be16 vlan_id;
c4cf55e5 6808
69830529
AD		 6809 /* if ring doesn't have a interrupt vector, cannot perform ATR */
6810 if (!q_vector)
6811 return;
6812
6813 /* do nothing if sampling is disabled */
6814 if (!ring->atr_sample_rate)
d3ead241 6815 return;
c4cf55e5 6816
69830529 6817 ring->atr_count++;
c4cf55e5 6818
69830529
AD		 6819 /* snag network header to get L4 type and address */
6820 hdr.network = skb_network_header(skb);
6821
6822 /* Currently only IPv4/IPv6 with TCP is supported */
6823 if ((protocol != __constant_htons(ETH_P_IPV6) ||
6824 hdr.ipv6->nexthdr != IPPROTO_TCP) &&
6825 (protocol != __constant_htons(ETH_P_IP) ||
6826 hdr.ipv4->protocol != IPPROTO_TCP))
6827 return;
ee9e0f0b
AD		 6828
6829 th = tcp_hdr(skb);
c4cf55e5 6830
69830529
AD		 6831 /* skip this packet since the socket is closing */
6832 if (th->fin)
6833 return;
6834
6835 /* sample on all syn packets or once every atr sample count */
6836 if (!th->syn && (ring->atr_count < ring->atr_sample_rate))
6837 return;
6838
6839 /* reset sample count */
6840 ring->atr_count = 0;
6841
6842 vlan_id = htons(tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT);
6843
6844 /*
6845 * src and dst are inverted, think how the receiver sees them
6846 *
6847 * The input is broken into two sections, a non-compressed section
6848 * containing vm_pool, vlan_id, and flow_type. The rest of the data
6849 * is XORed together and stored in the compressed dword.
6850 */
6851 input.formatted.vlan_id = vlan_id;
6852
6853 /*
6854 * since src port and flex bytes occupy the same word XOR them together
6855 * and write the value to source port portion of compressed dword
6856 */
6857 if (vlan_id)
6858 common.port.src ^= th->dest ^ __constant_htons(ETH_P_8021Q);
6859 else
6860 common.port.src ^= th->dest ^ protocol;
6861 common.port.dst ^= th->source;
6862
6863 if (protocol == __constant_htons(ETH_P_IP)) {
6864 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV4;
6865 common.ip ^= hdr.ipv4->saddr ^ hdr.ipv4->daddr;
6866 } else {
6867 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV6;
6868 common.ip ^= hdr.ipv6->saddr.s6_addr32[0] ^
6869 hdr.ipv6->saddr.s6_addr32[1] ^
6870 hdr.ipv6->saddr.s6_addr32[2] ^
6871 hdr.ipv6->saddr.s6_addr32[3] ^
6872 hdr.ipv6->daddr.s6_addr32[0] ^
6873 hdr.ipv6->daddr.s6_addr32[1] ^
6874 hdr.ipv6->daddr.s6_addr32[2] ^
6875 hdr.ipv6->daddr.s6_addr32[3];
6876 }
c4cf55e5
PWJ		 6877
6878 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
69830529
AD		 6879 ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw,
6880 input, common, ring->queue_index);
c4cf55e5
PWJ		 6881}
6882
fc77dc3c 6883static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, int size)
e092be60 6884{
fc77dc3c 6885 netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index);
e092be60
AV		 6886 /* Herbert's original patch had:
6887 * smp_mb__after_netif_stop_queue();
6888 * but since that doesn't exist yet, just open code it. */
6889 smp_mb();
6890
6891 /* We need to check again in a case another CPU has just
6892 * made room available. */
6893 if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
6894 return -EBUSY;
6895
6896 /* A reprieve! - use start_queue because it doesn't call schedule */
fc77dc3c 6897 netif_start_subqueue(tx_ring->netdev, tx_ring->queue_index);
5b7da515 6898 ++tx_ring->tx_stats.restart_queue;
e092be60
AV		 6899 return 0;
6900}
6901
fc77dc3c 6902static int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, int size)
e092be60
AV		 6903{
6904 if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
6905 return 0;
fc77dc3c 6906 return __ixgbe_maybe_stop_tx(tx_ring, size);
e092be60
AV		 6907}
6908
09a3b1f8
SH		 6909static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb)
6910{
6911 struct ixgbe_adapter *adapter = netdev_priv(dev);
5f715823 6912 int txq = smp_processor_id();
56075a98 6913#ifdef IXGBE_FCOE
5e09a105
HZ		 6914 __be16 protocol;
6915
6916 protocol = vlan_get_protocol(skb);
6917
e5b64635
JF		 6918 if (((protocol == htons(ETH_P_FCOE)) ||
6919 (protocol == htons(ETH_P_FIP))) &&
6920 (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) {
6921 txq &= (adapter->ring_feature[RING_F_FCOE].indices - 1);
6922 txq += adapter->ring_feature[RING_F_FCOE].mask;
6923 return txq;
56075a98
JF		 6924 }
6925#endif
6926
fdd3d631
KK		 6927 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
6928 while (unlikely(txq >= dev->real_num_tx_queues))
6929 txq -= dev->real_num_tx_queues;
5f715823 6930 return txq;
fdd3d631 6931 }
c4cf55e5 6932
09a3b1f8
SH		 6933 return skb_tx_hash(dev, skb);
6934}
6935
fc77dc3c 6936netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
84418e3b
AD		 6937 struct ixgbe_adapter *adapter,
6938 struct ixgbe_ring *tx_ring)
9a799d71 6939{
9a799d71
AK		 6940 unsigned int first;
6941 unsigned int tx_flags = 0;
30eba97a 6942 u8 hdr_len = 0;
5f715823 6943 int tso;
9a799d71
AK		 6944 int count = 0;
6945 unsigned int f;
5e09a105
HZ		 6946 __be16 protocol;
6947
6948 protocol = vlan_get_protocol(skb);
9f8cdf4f 6949
eab6d18d 6950 if (vlan_tx_tag_present(skb)) {
9f8cdf4f 6951 tx_flags |= vlan_tx_tag_get(skb);
2f90b865
AD		 6952 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6953 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
e5b64635 6954 tx_flags |= tx_ring->dcb_tc << 13;
2f90b865
AD		 6955 }
6956 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
6957 tx_flags |= IXGBE_TX_FLAGS_VLAN;
33c66bd1
JF		 6958 } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED &&
6959 skb->priority != TC_PRIO_CONTROL) {
e5b64635 6960 tx_flags |= tx_ring->dcb_tc << 13;
2ea186ae
JF		 6961 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
6962 tx_flags |= IXGBE_TX_FLAGS_VLAN;
9a799d71 6963 }
eacd73f7 6964
09ad1cc0 6965#ifdef IXGBE_FCOE
56075a98
JF		 6966 /* for FCoE with DCB, we force the priority to what
6967 * was specified by the switch */
6968 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED &&
e5b64635
JF		 6969 (protocol == htons(ETH_P_FCOE)))
6970 tx_flags |= IXGBE_TX_FLAGS_FCOE;
ca77cd59
RL		 6971#endif
6972
eacd73f7 6973 /* four things can cause us to need a context descriptor */
9f8cdf4f
JB		 6974 if (skb_is_gso(skb) ||
6975 (skb->ip_summed == CHECKSUM_PARTIAL) ||
eacd73f7
YZ		 6976 (tx_flags & IXGBE_TX_FLAGS_VLAN) ||
6977 (tx_flags & IXGBE_TX_FLAGS_FCOE))
9a799d71
AK		 6978 count++;
6979
9f8cdf4f
JB		 6980 count += TXD_USE_COUNT(skb_headlen(skb));
6981 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
9a799d71
AK		 6982 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
6983
fc77dc3c 6984 if (ixgbe_maybe_stop_tx(tx_ring, count)) {
5b7da515 6985 tx_ring->tx_stats.tx_busy++;
9a799d71
AK		 6986 return NETDEV_TX_BUSY;
6987 }
9a799d71 6988
9a799d71 6989 first = tx_ring->next_to_use;
eacd73f7
YZ		 6990 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
6991#ifdef IXGBE_FCOE
6992 /* setup tx offload for FCoE */
6993 tso = ixgbe_fso(adapter, tx_ring, skb, tx_flags, &hdr_len);
6994 if (tso < 0) {
6995 dev_kfree_skb_any(skb);
6996 return NETDEV_TX_OK;
6997 }
6998 if (tso)
6999 tx_flags |= IXGBE_TX_FLAGS_FSO;
7000#endif /* IXGBE_FCOE */
7001 } else {
5e09a105 7002 if (protocol == htons(ETH_P_IP))
eacd73f7 7003 tx_flags |= IXGBE_TX_FLAGS_IPV4;
5e09a105
HZ		 7004 tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len,
7005 protocol);
eacd73f7
YZ		 7006 if (tso < 0) {
7007 dev_kfree_skb_any(skb);
7008 return NETDEV_TX_OK;
7009 }
9a799d71 7010
eacd73f7
YZ		 7011 if (tso)
7012 tx_flags |= IXGBE_TX_FLAGS_TSO;
5e09a105
HZ		 7013 else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags,
7014 protocol) &&
eacd73f7
YZ		 7015 (skb->ip_summed == CHECKSUM_PARTIAL))
7016 tx_flags |= IXGBE_TX_FLAGS_CSUM;
7017 }
9a799d71 7018
8ad494b0 7019 count = ixgbe_tx_map(adapter, tx_ring, skb, tx_flags, first, hdr_len);
44df32c5 7020 if (count) {
c4cf55e5 7021 /* add the ATR filter if ATR is on */
69830529
AD		 7022 if (test_bit(__IXGBE_TX_FDIR_INIT_DONE, &tx_ring->state))
7023 ixgbe_atr(tx_ring, skb, tx_flags, protocol);
84ea2591 7024 ixgbe_tx_queue(tx_ring, tx_flags, count, skb->len, hdr_len);
fc77dc3c 7025 ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED);
9a799d71 7026
44df32c5
AD		 7027 } else {
7028 dev_kfree_skb_any(skb);
7029 tx_ring->tx_buffer_info[first].time_stamp = 0;
7030 tx_ring->next_to_use = first;
7031 }
9a799d71
AK		 7032
7033 return NETDEV_TX_OK;
7034}
7035
84418e3b
AD		 7036static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
7037{
7038 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7039 struct ixgbe_ring *tx_ring;
7040
7041 tx_ring = adapter->tx_ring[skb->queue_mapping];
fc77dc3c 7042 return ixgbe_xmit_frame_ring(skb, adapter, tx_ring);
84418e3b
AD		 7043}
7044
9a799d71
AK		 7045/**
7046 * ixgbe_set_mac - Change the Ethernet Address of the NIC
7047 * @netdev: network interface device structure
7048 * @p: pointer to an address structure
7049 *
7050 * Returns 0 on success, negative on failure
7051 **/
7052static int ixgbe_set_mac(struct net_device *netdev, void *p)
7053{
7054 struct ixgbe_adapter *adapter = netdev_priv(netdev);
b4617240 7055 struct ixgbe_hw *hw = &adapter->hw;
9a799d71
AK		 7056 struct sockaddr *addr = p;
7057
7058 if (!is_valid_ether_addr(addr->sa_data))
7059 return -EADDRNOTAVAIL;
7060
7061 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
b4617240 7062 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
9a799d71 7063
1cdd1ec8
GR		 7064 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
7065 IXGBE_RAH_AV);
9a799d71
AK		 7066
7067 return 0;
7068}
7069
6b73e10d
BH		 7070static int
7071ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr)
7072{
7073 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7074 struct ixgbe_hw *hw = &adapter->hw;
7075 u16 value;
7076 int rc;
7077
7078 if (prtad != hw->phy.mdio.prtad)
7079 return -EINVAL;
7080 rc = hw->phy.ops.read_reg(hw, addr, devad, &value);
7081 if (!rc)
7082 rc = value;
7083 return rc;
7084}
7085
7086static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad,
7087 u16 addr, u16 value)
7088{
7089 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7090 struct ixgbe_hw *hw = &adapter->hw;
7091
7092 if (prtad != hw->phy.mdio.prtad)
7093 return -EINVAL;
7094 return hw->phy.ops.write_reg(hw, addr, devad, value);
7095}
7096
7097static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
7098{
7099 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7100
7101 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd);
7102}
7103
0365e6e4
PW		 7104/**
7105 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
31278e71 7106 * netdev->dev_addrs
0365e6e4
PW		 7107 * @netdev: network interface device structure
7108 *
7109 * Returns non-zero on failure
7110 **/
7111static int ixgbe_add_sanmac_netdev(struct net_device *dev)
7112{
7113 int err = 0;
7114 struct ixgbe_adapter *adapter = netdev_priv(dev);
7115 struct ixgbe_mac_info *mac = &adapter->hw.mac;
7116
7117 if (is_valid_ether_addr(mac->san_addr)) {
7118 rtnl_lock();
7119 err = dev_addr_add(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
7120 rtnl_unlock();
7121 }
7122 return err;
7123}
7124
7125/**
7126 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
31278e71 7127 * netdev->dev_addrs
0365e6e4
PW		 7128 * @netdev: network interface device structure
7129 *
7130 * Returns non-zero on failure
7131 **/
7132static int ixgbe_del_sanmac_netdev(struct net_device *dev)
7133{
7134 int err = 0;
7135 struct ixgbe_adapter *adapter = netdev_priv(dev);
7136 struct ixgbe_mac_info *mac = &adapter->hw.mac;
7137
7138 if (is_valid_ether_addr(mac->san_addr)) {
7139 rtnl_lock();
7140 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
7141 rtnl_unlock();
7142 }
7143 return err;
7144}
7145
9a799d71
AK		 7146#ifdef CONFIG_NET_POLL_CONTROLLER
7147/*
7148 * Polling 'interrupt' - used by things like netconsole to send skbs
7149 * without having to re-enable interrupts. It's not called while
7150 * the interrupt routine is executing.
7151 */
7152static void ixgbe_netpoll(struct net_device *netdev)
7153{
7154 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8f9a7167 7155 int i;
9a799d71 7156
1a647bd2
AD		 7157 /* if interface is down do nothing */
7158 if (test_bit(__IXGBE_DOWN, &adapter->state))
7159 return;
7160
9a799d71 7161 adapter->flags |= IXGBE_FLAG_IN_NETPOLL;
8f9a7167
PWJ		 7162 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
7163 int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
7164 for (i = 0; i < num_q_vectors; i++) {
7165 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
7166 ixgbe_msix_clean_many(0, q_vector);
7167 }
7168 } else {
7169 ixgbe_intr(adapter->pdev->irq, netdev);
7170 }
9a799d71 7171 adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL;
9a799d71
AK		 7172}
7173#endif
7174
de1036b1
ED		 7175static struct rtnl_link_stats64 *ixgbe_get_stats64(struct net_device *netdev,
7176 struct rtnl_link_stats64 *stats)
7177{
7178 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7179 int i;
7180
1a51502b 7181 rcu_read_lock();
de1036b1 7182 for (i = 0; i < adapter->num_rx_queues; i++) {
1a51502b 7183 struct ixgbe_ring *ring = ACCESS_ONCE(adapter->rx_ring[i]);
de1036b1
ED		 7184 u64 bytes, packets;
7185 unsigned int start;
7186
1a51502b
ED		 7187 if (ring) {
7188 do {
7189 start = u64_stats_fetch_begin_bh(&ring->syncp);
7190 packets = ring->stats.packets;
7191 bytes = ring->stats.bytes;
7192 } while (u64_stats_fetch_retry_bh(&ring->syncp, start));
7193 stats->rx_packets += packets;
7194 stats->rx_bytes += bytes;
7195 }
de1036b1 7196 }
1ac9ad13
ED		 7197
7198 for (i = 0; i < adapter->num_tx_queues; i++) {
7199 struct ixgbe_ring *ring = ACCESS_ONCE(adapter->tx_ring[i]);
7200 u64 bytes, packets;
7201 unsigned int start;
7202
7203 if (ring) {
7204 do {
7205 start = u64_stats_fetch_begin_bh(&ring->syncp);
7206 packets = ring->stats.packets;
7207 bytes = ring->stats.bytes;
7208 } while (u64_stats_fetch_retry_bh(&ring->syncp, start));
7209 stats->tx_packets += packets;
7210 stats->tx_bytes += bytes;
7211 }
7212 }
1a51502b 7213 rcu_read_unlock();
de1036b1
ED		 7214 /* following stats updated by ixgbe_watchdog_task() */
7215 stats->multicast = netdev->stats.multicast;
7216 stats->rx_errors = netdev->stats.rx_errors;
7217 stats->rx_length_errors = netdev->stats.rx_length_errors;
7218 stats->rx_crc_errors = netdev->stats.rx_crc_errors;
7219 stats->rx_missed_errors = netdev->stats.rx_missed_errors;
7220 return stats;
7221}
7222
7223
0edc3527 7224static const struct net_device_ops ixgbe_netdev_ops = {
e8e9f696 7225 .ndo_open = ixgbe_open,
0edc3527 7226 .ndo_stop = ixgbe_close,
00829823 7227 .ndo_start_xmit = ixgbe_xmit_frame,
09a3b1f8 7228 .ndo_select_queue = ixgbe_select_queue,
e90d400c 7229 .ndo_set_rx_mode = ixgbe_set_rx_mode,
0edc3527
SH		 7230 .ndo_set_multicast_list = ixgbe_set_rx_mode,
7231 .ndo_validate_addr = eth_validate_addr,
7232 .ndo_set_mac_address = ixgbe_set_mac,
7233 .ndo_change_mtu = ixgbe_change_mtu,
7234 .ndo_tx_timeout = ixgbe_tx_timeout,
0edc3527
SH		 7235 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
7236 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
6b73e10d 7237 .ndo_do_ioctl = ixgbe_ioctl,
7f01648a
GR		 7238 .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac,
7239 .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan,
7240 .ndo_set_vf_tx_rate = ixgbe_ndo_set_vf_bw,
7241 .ndo_get_vf_config = ixgbe_ndo_get_vf_config,
de1036b1 7242 .ndo_get_stats64 = ixgbe_get_stats64,
24095aa3
JF		 7243#ifdef CONFIG_IXGBE_DCB
7244 .ndo_setup_tc = ixgbe_setup_tc,
7245#endif
0edc3527
SH		 7246#ifdef CONFIG_NET_POLL_CONTROLLER
7247 .ndo_poll_controller = ixgbe_netpoll,
7248#endif
332d4a7d
YZ		 7249#ifdef IXGBE_FCOE
7250 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get,
68a683cf 7251 .ndo_fcoe_ddp_target = ixgbe_fcoe_ddp_target,
332d4a7d 7252 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put,
8450ff8c
YZ		 7253 .ndo_fcoe_enable = ixgbe_fcoe_enable,
7254 .ndo_fcoe_disable = ixgbe_fcoe_disable,
61a1fa10 7255 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn,
332d4a7d 7256#endif /* IXGBE_FCOE */
0edc3527
SH		 7257};
7258
1cdd1ec8
GR		 7259static void __devinit ixgbe_probe_vf(struct ixgbe_adapter *adapter,
7260 const struct ixgbe_info *ii)
7261{
7262#ifdef CONFIG_PCI_IOV
7263 struct ixgbe_hw *hw = &adapter->hw;
7264 int err;
a1cbb15c
GR		 7265 int num_vf_macvlans, i;
7266 struct vf_macvlans *mv_list;
1cdd1ec8 7267
3377eba7 7268 if (hw->mac.type == ixgbe_mac_82598EB || !max_vfs)
1cdd1ec8
GR		 7269 return;
7270
7271 /* The 82599 supports up to 64 VFs per physical function
7272 * but this implementation limits allocation to 63 so that
7273 * basic networking resources are still available to the
7274 * physical function
7275 */
7276 adapter->num_vfs = (max_vfs > 63) ? 63 : max_vfs;
7277 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
7278 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
7279 if (err) {
396e799c 7280 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
1cdd1ec8
GR		 7281 goto err_novfs;
7282 }
a1cbb15c
GR		 7283
7284 num_vf_macvlans = hw->mac.num_rar_entries -
7285 (IXGBE_MAX_PF_MACVLANS + 1 + adapter->num_vfs);
7286
7287 adapter->mv_list = mv_list = kcalloc(num_vf_macvlans,
7288 sizeof(struct vf_macvlans),
7289 GFP_KERNEL);
7290 if (mv_list) {
7291 /* Initialize list of VF macvlans */
7292 INIT_LIST_HEAD(&adapter->vf_mvs.l);
7293 for (i = 0; i < num_vf_macvlans; i++) {
7294 mv_list->vf = -1;
7295 mv_list->free = true;
7296 mv_list->rar_entry = hw->mac.num_rar_entries -
7297 (i + adapter->num_vfs + 1);
7298 list_add(&mv_list->l, &adapter->vf_mvs.l);
7299 mv_list++;
7300 }
7301 }
7302
1cdd1ec8
GR		 7303 /* If call to enable VFs succeeded then allocate memory
7304 * for per VF control structures.
7305 */
7306 adapter->vfinfo =
7307 kcalloc(adapter->num_vfs,
7308 sizeof(struct vf_data_storage), GFP_KERNEL);
7309 if (adapter->vfinfo) {
7310 /* Now that we're sure SR-IOV is enabled
7311 * and memory allocated set up the mailbox parameters
7312 */
7313 ixgbe_init_mbx_params_pf(hw);
7314 memcpy(&hw->mbx.ops, ii->mbx_ops,
7315 sizeof(hw->mbx.ops));
7316
7317 /* Disable RSC when in SR-IOV mode */
7318 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
7319 IXGBE_FLAG2_RSC_ENABLED);
7320 return;
7321 }
7322
7323 /* Oh oh */
396e799c
ET		 7324 e_err(probe, "Unable to allocate memory for VF Data Storage - "
7325 "SRIOV disabled\n");
1cdd1ec8
GR		 7326 pci_disable_sriov(adapter->pdev);
7327
7328err_novfs:
7329 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
7330 adapter->num_vfs = 0;
7331#endif /* CONFIG_PCI_IOV */
7332}
7333
9a799d71
AK		 7334/**
7335 * ixgbe_probe - Device Initialization Routine
7336 * @pdev: PCI device information struct
7337 * @ent: entry in ixgbe_pci_tbl
7338 *
7339 * Returns 0 on success, negative on failure
7340 *
7341 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
7342 * The OS initialization, configuring of the adapter private structure,
7343 * and a hardware reset occur.
7344 **/
7345static int __devinit ixgbe_probe(struct pci_dev *pdev,
e8e9f696 7346 const struct pci_device_id *ent)
9a799d71
AK		 7347{
7348 struct net_device *netdev;
7349 struct ixgbe_adapter *adapter = NULL;
7350 struct ixgbe_hw *hw;
7351 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
9a799d71
AK		 7352 static int cards_found;
7353 int i, err, pci_using_dac;
289700db 7354 u8 part_str[IXGBE_PBANUM_LENGTH];
c85a2618 7355 unsigned int indices = num_possible_cpus();
eacd73f7
YZ		 7356#ifdef IXGBE_FCOE
7357 u16 device_caps;
7358#endif
289700db 7359 u32 eec;
9a799d71 7360
bded64a7
AG		 7361 /* Catch broken hardware that put the wrong VF device ID in
7362 * the PCIe SR-IOV capability.
7363 */
7364 if (pdev->is_virtfn) {
7365 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
7366 pci_name(pdev), pdev->vendor, pdev->device);
7367 return -EINVAL;
7368 }
7369
9ce77666 7370 err = pci_enable_device_mem(pdev);
9a799d71
AK		 7371 if (err)
7372 return err;
7373
1b507730
NN		 7374 if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
7375 !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
9a799d71
AK		 7376 pci_using_dac = 1;
7377 } else {
1b507730 7378 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
9a799d71 7379 if (err) {
1b507730
NN		 7380 err = dma_set_coherent_mask(&pdev->dev,
7381 DMA_BIT_MASK(32));
9a799d71 7382 if (err) {
b8bc0421
DC		 7383 dev_err(&pdev->dev,
7384 "No usable DMA configuration, aborting\n");
9a799d71
AK		 7385 goto err_dma;
7386 }
7387 }
7388 pci_using_dac = 0;
7389 }
7390
9ce77666 7391 err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
e8e9f696 7392 IORESOURCE_MEM), ixgbe_driver_name);
9a799d71 7393 if (err) {
b8bc0421
DC		 7394 dev_err(&pdev->dev,
7395 "pci_request_selected_regions failed 0x%x\n", err);
9a799d71
AK		 7396 goto err_pci_reg;
7397 }
7398
19d5afd4 7399 pci_enable_pcie_error_reporting(pdev);
6fabd715 7400
9a799d71 7401 pci_set_master(pdev);
fb3b27bc 7402 pci_save_state(pdev);
9a799d71 7403
c85a2618
JF		 7404 if (ii->mac == ixgbe_mac_82598EB)
7405 indices = min_t(unsigned int, indices, IXGBE_MAX_RSS_INDICES);
7406 else
7407 indices = min_t(unsigned int, indices, IXGBE_MAX_FDIR_INDICES);
7408
e5b64635 7409#if defined(CONFIG_DCB)
c85a2618 7410 indices = max_t(unsigned int, indices, IXGBE_MAX_DCB_INDICES);
e5b64635 7411#elif defined(IXGBE_FCOE)
c85a2618
JF		 7412 indices += min_t(unsigned int, num_possible_cpus(),
7413 IXGBE_MAX_FCOE_INDICES);
7414#endif
c85a2618 7415 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices);
9a799d71
AK		 7416 if (!netdev) {
7417 err = -ENOMEM;
7418 goto err_alloc_etherdev;
7419 }
7420
9a799d71
AK		 7421 SET_NETDEV_DEV(netdev, &pdev->dev);
7422
9a799d71 7423 adapter = netdev_priv(netdev);
c60fbb00 7424 pci_set_drvdata(pdev, adapter);
9a799d71
AK		 7425
7426 adapter->netdev = netdev;
7427 adapter->pdev = pdev;
7428 hw = &adapter->hw;
7429 hw->back = adapter;
7430 adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
7431
05857980 7432 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
e8e9f696 7433 pci_resource_len(pdev, 0));
9a799d71
AK		 7434 if (!hw->hw_addr) {
7435 err = -EIO;
7436 goto err_ioremap;
7437 }
7438
7439 for (i = 1; i <= 5; i++) {
7440 if (pci_resource_len(pdev, i) == 0)
7441 continue;
7442 }
7443
0edc3527 7444 netdev->netdev_ops = &ixgbe_netdev_ops;
9a799d71 7445 ixgbe_set_ethtool_ops(netdev);
9a799d71 7446 netdev->watchdog_timeo = 5 * HZ;
9fe93afd 7447 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
9a799d71 7448
9a799d71
AK		 7449 adapter->bd_number = cards_found;
7450
9a799d71
AK		 7451 /* Setup hw api */
7452 memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
021230d4 7453 hw->mac.type = ii->mac;
9a799d71 7454
c44ade9e
JB		 7455 /* EEPROM */
7456 memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops));
7457 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
7458 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
7459 if (!(eec & (1 << 8)))
7460 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
7461
7462 /* PHY */
7463 memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops));
c4900be0 7464 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
6b73e10d
BH		 7465 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
7466 hw->phy.mdio.prtad = MDIO_PRTAD_NONE;
7467 hw->phy.mdio.mmds = 0;
7468 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
7469 hw->phy.mdio.dev = netdev;
7470 hw->phy.mdio.mdio_read = ixgbe_mdio_read;
7471 hw->phy.mdio.mdio_write = ixgbe_mdio_write;
c4900be0 7472
8ca783ab 7473 ii->get_invariants(hw);
9a799d71
AK		 7474
7475 /* setup the private structure */
7476 err = ixgbe_sw_init(adapter);
7477 if (err)
7478 goto err_sw_init;
7479
e86bff0e 7480 /* Make it possible the adapter to be woken up via WOL */
b93a2226
DS		 7481 switch (adapter->hw.mac.type) {
7482 case ixgbe_mac_82599EB:
7483 case ixgbe_mac_X540:
e86bff0e 7484 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
b93a2226
DS		 7485 break;
7486 default:
7487 break;
7488 }
e86bff0e 7489
bf069c97
DS		 7490 /*
7491 * If there is a fan on this device and it has failed log the
7492 * failure.
7493 */
7494 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
7495 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
7496 if (esdp & IXGBE_ESDP_SDP1)
396e799c 7497 e_crit(probe, "Fan has stopped, replace the adapter\n");
bf069c97
DS		 7498 }
7499
c44ade9e 7500 /* reset_hw fills in the perm_addr as well */
119fc60a 7501 hw->phy.reset_if_overtemp = true;
c44ade9e 7502 err = hw->mac.ops.reset_hw(hw);
119fc60a 7503 hw->phy.reset_if_overtemp = false;
8ca783ab
DS		 7504 if (err == IXGBE_ERR_SFP_NOT_PRESENT &&
7505 hw->mac.type == ixgbe_mac_82598EB) {
8ca783ab
DS		 7506 err = 0;
7507 } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
7086400d 7508 e_dev_err("failed to load because an unsupported SFP+ "
849c4542
ET		 7509 "module type was detected.\n");
7510 e_dev_err("Reload the driver after installing a supported "
7511 "module.\n");
04f165ef
PW		 7512 goto err_sw_init;
7513 } else if (err) {
849c4542 7514 e_dev_err("HW Init failed: %d\n", err);
c44ade9e
JB		 7515 goto err_sw_init;
7516 }
7517
1cdd1ec8
GR		 7518 ixgbe_probe_vf(adapter, ii);
7519
396e799c 7520 netdev->features = NETIF_F_SG |
e8e9f696
JP		 7521 NETIF_F_IP_CSUM |
7522 NETIF_F_HW_VLAN_TX |
7523 NETIF_F_HW_VLAN_RX |
7524 NETIF_F_HW_VLAN_FILTER;
9a799d71 7525
e9990a9c 7526 netdev->features |= NETIF_F_IPV6_CSUM;
9a799d71 7527 netdev->features |= NETIF_F_TSO;
9a799d71 7528 netdev->features |= NETIF_F_TSO6;
78b6f4ce 7529 netdev->features |= NETIF_F_GRO;
67a74ee2 7530 netdev->features |= NETIF_F_RXHASH;
ad31c402 7531
58be7666
DS		 7532 switch (adapter->hw.mac.type) {
7533 case ixgbe_mac_82599EB:
7534 case ixgbe_mac_X540:
45a5ead0 7535 netdev->features |= NETIF_F_SCTP_CSUM;
58be7666
DS		 7536 break;
7537 default:
7538 break;
7539 }
45a5ead0 7540
ad31c402
JK		 7541 netdev->vlan_features |= NETIF_F_TSO;
7542 netdev->vlan_features |= NETIF_F_TSO6;
22f32b7a 7543 netdev->vlan_features |= NETIF_F_IP_CSUM;
cd1da503 7544 netdev->vlan_features |= NETIF_F_IPV6_CSUM;
ad31c402
JK		 7545 netdev->vlan_features |= NETIF_F_SG;
7546
1cdd1ec8
GR		 7547 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
7548 adapter->flags &= ~(IXGBE_FLAG_RSS_ENABLED |
7549 IXGBE_FLAG_DCB_ENABLED);
2f90b865 7550
7a6b6f51 7551#ifdef CONFIG_IXGBE_DCB
2f90b865
AD		 7552 netdev->dcbnl_ops = &dcbnl_ops;
7553#endif
7554
eacd73f7 7555#ifdef IXGBE_FCOE
0d551589 7556 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
eacd73f7
YZ		 7557 if (hw->mac.ops.get_device_caps) {
7558 hw->mac.ops.get_device_caps(hw, &device_caps);
0d551589
YZ		 7559 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)
7560 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
eacd73f7
YZ		 7561 }
7562 }
5e09d7f6
YZ		 7563 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
7564 netdev->vlan_features |= NETIF_F_FCOE_CRC;
7565 netdev->vlan_features |= NETIF_F_FSO;
7566 netdev->vlan_features |= NETIF_F_FCOE_MTU;
7567 }
eacd73f7 7568#endif /* IXGBE_FCOE */
7b872a55 7569 if (pci_using_dac) {
9a799d71 7570 netdev->features |= NETIF_F_HIGHDMA;
7b872a55
YZ		 7571 netdev->vlan_features |= NETIF_F_HIGHDMA;
7572 }
9a799d71 7573
0c19d6af 7574 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
f8212f97
AD		 7575 netdev->features |= NETIF_F_LRO;
7576
9a799d71 7577 /* make sure the EEPROM is good */
c44ade9e 7578 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
849c4542 7579 e_dev_err("The EEPROM Checksum Is Not Valid\n");
9a799d71
AK		 7580 err = -EIO;
7581 goto err_eeprom;
7582 }
7583
7584 memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len);
7585 memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len);
7586
c44ade9e 7587 if (ixgbe_validate_mac_addr(netdev->perm_addr)) {
849c4542 7588 e_dev_err("invalid MAC address\n");
9a799d71
AK		 7589 err = -EIO;
7590 goto err_eeprom;
7591 }
7592
c6ecf39a
DS		 7593 /* power down the optics for multispeed fiber and 82599 SFP+ fiber */
7594 if (hw->mac.ops.disable_tx_laser &&
7595 ((hw->phy.multispeed_fiber) ||
9f911707 7596 ((hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber) &&
c6ecf39a 7597 (hw->mac.type == ixgbe_mac_82599EB))))
61fac744
PW		 7598 hw->mac.ops.disable_tx_laser(hw);
7599
7086400d
AD		 7600 setup_timer(&adapter->service_timer, &ixgbe_service_timer,
7601 (unsigned long) adapter);
9a799d71 7602
7086400d
AD		 7603 INIT_WORK(&adapter->service_task, ixgbe_service_task);
7604 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state);
9a799d71 7605
021230d4
AV		 7606 err = ixgbe_init_interrupt_scheme(adapter);
7607 if (err)
7608 goto err_sw_init;
9a799d71 7609
67a74ee2
ET		 7610 if (!(adapter->flags & IXGBE_FLAG_RSS_ENABLED))
7611 netdev->features &= ~NETIF_F_RXHASH;
7612
e8e26350 7613 switch (pdev->device) {
0b077fea
DS		 7614 case IXGBE_DEV_ID_82599_SFP:
7615 /* Only this subdevice supports WOL */
7616 if (pdev->subsystem_device == IXGBE_SUBDEV_ID_82599_SFP)
7617 adapter->wol = (IXGBE_WUFC_MAG | IXGBE_WUFC_EX |
7618 IXGBE_WUFC_MC | IXGBE_WUFC_BC);
7619 break;
50d6c681
AD		 7620 case IXGBE_DEV_ID_82599_COMBO_BACKPLANE:
7621 /* All except this subdevice support WOL */
0b077fea
DS		 7622 if (pdev->subsystem_device != IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ)
7623 adapter->wol = (IXGBE_WUFC_MAG | IXGBE_WUFC_EX |
7624 IXGBE_WUFC_MC | IXGBE_WUFC_BC);
7625 break;
e8e26350 7626 case IXGBE_DEV_ID_82599_KX4:
495dce12 7627 adapter->wol = (IXGBE_WUFC_MAG | IXGBE_WUFC_EX |
e8e9f696 7628 IXGBE_WUFC_MC | IXGBE_WUFC_BC);
e8e26350
PW		 7629 break;
7630 default:
7631 adapter->wol = 0;
7632 break;
7633 }
e8e26350
PW		 7634 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
7635
04f165ef
PW		 7636 /* pick up the PCI bus settings for reporting later */
7637 hw->mac.ops.get_bus_info(hw);
7638
9a799d71 7639 /* print bus type/speed/width info */
849c4542 7640 e_dev_info("(PCI Express:%s:%s) %pM\n",
6716344c
DS		 7641 (hw->bus.speed == ixgbe_bus_speed_5000 ? "5.0GT/s" :
7642 hw->bus.speed == ixgbe_bus_speed_2500 ? "2.5GT/s" :
e8e9f696
JP		 7643 "Unknown"),
7644 (hw->bus.width == ixgbe_bus_width_pcie_x8 ? "Width x8" :
7645 hw->bus.width == ixgbe_bus_width_pcie_x4 ? "Width x4" :
7646 hw->bus.width == ixgbe_bus_width_pcie_x1 ? "Width x1" :
7647 "Unknown"),
7648 netdev->dev_addr);
289700db
DS		 7649
7650 err = ixgbe_read_pba_string_generic(hw, part_str, IXGBE_PBANUM_LENGTH);
7651 if (err)
9fe93afd 7652 strncpy(part_str, "Unknown", IXGBE_PBANUM_LENGTH);
e8e26350 7653 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present)
289700db 7654 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n",
849c4542 7655 hw->mac.type, hw->phy.type, hw->phy.sfp_type,
289700db 7656 part_str);
e8e26350 7657 else
289700db
DS		 7658 e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n",
7659 hw->mac.type, hw->phy.type, part_str);
9a799d71 7660
e8e26350 7661 if (hw->bus.width <= ixgbe_bus_width_pcie_x4) {
849c4542
ET		 7662 e_dev_warn("PCI-Express bandwidth available for this card is "
7663 "not sufficient for optimal performance.\n");
7664 e_dev_warn("For optimal performance a x8 PCI-Express slot "
7665 "is required.\n");
0c254d86
AK		 7666 }
7667
34b0368c
PWJ		 7668 /* save off EEPROM version number */
7669 hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version);
7670
9a799d71 7671 /* reset the hardware with the new settings */
794caeb2 7672 err = hw->mac.ops.start_hw(hw);
c44ade9e 7673
794caeb2
PWJ		 7674 if (err == IXGBE_ERR_EEPROM_VERSION) {
7675 /* We are running on a pre-production device, log a warning */
849c4542
ET		 7676 e_dev_warn("This device is a pre-production adapter/LOM. "
7677 "Please be aware there may be issues associated "
7678 "with your hardware. If you are experiencing "
7679 "problems please contact your Intel or hardware "
7680 "representative who provided you with this "
7681 "hardware.\n");
794caeb2 7682 }
9a799d71
AK		 7683 strcpy(netdev->name, "eth%d");
7684 err = register_netdev(netdev);
7685 if (err)
7686 goto err_register;
7687
54386467
JB		 7688 /* carrier off reporting is important to ethtool even BEFORE open */
7689 netif_carrier_off(netdev);
7690
5dd2d332 7691#ifdef CONFIG_IXGBE_DCA
652f093f 7692 if (dca_add_requester(&pdev->dev) == 0) {
bd0362dd 7693 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
bd0362dd
JC		 7694 ixgbe_setup_dca(adapter);
7695 }
7696#endif
1cdd1ec8 7697 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
396e799c 7698 e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs);
1cdd1ec8
GR		 7699 for (i = 0; i < adapter->num_vfs; i++)
7700 ixgbe_vf_configuration(pdev, (i | 0x10000000));
7701 }
7702
0365e6e4
PW		 7703 /* add san mac addr to netdev */
7704 ixgbe_add_sanmac_netdev(netdev);
9a799d71 7705
849c4542 7706 e_dev_info("Intel(R) 10 Gigabit Network Connection\n");
9a799d71
AK		 7707 cards_found++;
7708 return 0;
7709
7710err_register:
5eba3699 7711 ixgbe_release_hw_control(adapter);
7a921c93 7712 ixgbe_clear_interrupt_scheme(adapter);
9a799d71
AK		 7713err_sw_init:
7714err_eeprom:
1cdd1ec8
GR		 7715 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
7716 ixgbe_disable_sriov(adapter);
7086400d 7717 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP;
9a799d71
AK		 7718 iounmap(hw->hw_addr);
7719err_ioremap:
7720 free_netdev(netdev);
7721err_alloc_etherdev:
e8e9f696
JP		 7722 pci_release_selected_regions(pdev,
7723 pci_select_bars(pdev, IORESOURCE_MEM));
9a799d71
AK		 7724err_pci_reg:
7725err_dma:
7726 pci_disable_device(pdev);
7727 return err;
7728}
7729
7730/**
7731 * ixgbe_remove - Device Removal Routine
7732 * @pdev: PCI device information struct
7733 *
7734 * ixgbe_remove is called by the PCI subsystem to alert the driver
7735 * that it should release a PCI device. The could be caused by a
7736 * Hot-Plug event, or because the driver is going to be removed from
7737 * memory.
7738 **/
7739static void __devexit ixgbe_remove(struct pci_dev *pdev)
7740{
c60fbb00
AD		 7741 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
7742 struct net_device *netdev = adapter->netdev;
9a799d71
AK		 7743
7744 set_bit(__IXGBE_DOWN, &adapter->state);
7086400d 7745 cancel_work_sync(&adapter->service_task);
9a799d71 7746
5dd2d332 7747#ifdef CONFIG_IXGBE_DCA
bd0362dd
JC		 7748 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
7749 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
7750 dca_remove_requester(&pdev->dev);
7751 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
7752 }
7753
7754#endif
332d4a7d
YZ		 7755#ifdef IXGBE_FCOE
7756 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
7757 ixgbe_cleanup_fcoe(adapter);
7758
7759#endif /* IXGBE_FCOE */
0365e6e4
PW		 7760
7761 /* remove the added san mac */
7762 ixgbe_del_sanmac_netdev(netdev);
7763
c4900be0
DS		 7764 if (netdev->reg_state == NETREG_REGISTERED)
7765 unregister_netdev(netdev);
9a799d71 7766
1cdd1ec8
GR		 7767 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
7768 ixgbe_disable_sriov(adapter);
7769
7a921c93 7770 ixgbe_clear_interrupt_scheme(adapter);
5eba3699 7771
021230d4 7772 ixgbe_release_hw_control(adapter);
9a799d71
AK		 7773
7774 iounmap(adapter->hw.hw_addr);
9ce77666 7775 pci_release_selected_regions(pdev, pci_select_bars(pdev,
e8e9f696 7776 IORESOURCE_MEM));
9a799d71 7777
849c4542 7778 e_dev_info("complete\n");
021230d4 7779
9a799d71
AK		 7780 free_netdev(netdev);
7781
19d5afd4 7782 pci_disable_pcie_error_reporting(pdev);
6fabd715 7783
9a799d71
AK		 7784 pci_disable_device(pdev);
7785}
7786
7787/**
7788 * ixgbe_io_error_detected - called when PCI error is detected
7789 * @pdev: Pointer to PCI device
7790 * @state: The current pci connection state
7791 *
7792 * This function is called after a PCI bus error affecting
7793 * this device has been detected.
7794 */
7795static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
e8e9f696 7796 pci_channel_state_t state)
9a799d71 7797{
c60fbb00
AD		 7798 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
7799 struct net_device *netdev = adapter->netdev;
9a799d71
AK		 7800
7801 netif_device_detach(netdev);
7802
3044b8d1
BL		 7803 if (state == pci_channel_io_perm_failure)
7804 return PCI_ERS_RESULT_DISCONNECT;
7805
9a799d71
AK		 7806 if (netif_running(netdev))
7807 ixgbe_down(adapter);
7808 pci_disable_device(pdev);
7809
b4617240 7810 /* Request a slot reset. */
9a799d71
AK		 7811 return PCI_ERS_RESULT_NEED_RESET;
7812}
7813
7814/**
7815 * ixgbe_io_slot_reset - called after the pci bus has been reset.
7816 * @pdev: Pointer to PCI device
7817 *
7818 * Restart the card from scratch, as if from a cold-boot.
7819 */
7820static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
7821{
c60fbb00 7822 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
6fabd715
PWJ		 7823 pci_ers_result_t result;
7824 int err;
9a799d71 7825
9ce77666 7826 if (pci_enable_device_mem(pdev)) {
396e799c 7827 e_err(probe, "Cannot re-enable PCI device after reset.\n");
6fabd715
PWJ		 7828 result = PCI_ERS_RESULT_DISCONNECT;
7829 } else {
7830 pci_set_master(pdev);
7831 pci_restore_state(pdev);
c0e1f68b 7832 pci_save_state(pdev);
9a799d71 7833
dd4d8ca6 7834 pci_wake_from_d3(pdev, false);
9a799d71 7835
6fabd715 7836 ixgbe_reset(adapter);
88512539 7837 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
6fabd715
PWJ		 7838 result = PCI_ERS_RESULT_RECOVERED;
7839 }
7840
7841 err = pci_cleanup_aer_uncorrect_error_status(pdev);
7842 if (err) {
849c4542
ET		 7843 e_dev_err("pci_cleanup_aer_uncorrect_error_status "
7844 "failed 0x%0x\n", err);
6fabd715
PWJ		 7845 /* non-fatal, continue */
7846 }
9a799d71 7847
6fabd715 7848 return result;
9a799d71
AK		 7849}
7850
7851/**
7852 * ixgbe_io_resume - called when traffic can start flowing again.
7853 * @pdev: Pointer to PCI device
7854 *
7855 * This callback is called when the error recovery driver tells us that
7856 * its OK to resume normal operation.
7857 */
7858static void ixgbe_io_resume(struct pci_dev *pdev)
7859{
c60fbb00
AD		 7860 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
7861 struct net_device *netdev = adapter->netdev;
9a799d71
AK		 7862
7863 if (netif_running(netdev)) {
7864 if (ixgbe_up(adapter)) {
396e799c 7865 e_info(probe, "ixgbe_up failed after reset\n");
9a799d71
AK		 7866 return;
7867 }
7868 }
7869
7870 netif_device_attach(netdev);
9a799d71
AK		 7871}
7872
7873static struct pci_error_handlers ixgbe_err_handler = {
7874 .error_detected = ixgbe_io_error_detected,
7875 .slot_reset = ixgbe_io_slot_reset,
7876 .resume = ixgbe_io_resume,
7877};
7878
7879static struct pci_driver ixgbe_driver = {
7880 .name = ixgbe_driver_name,
7881 .id_table = ixgbe_pci_tbl,
7882 .probe = ixgbe_probe,
7883 .remove = __devexit_p(ixgbe_remove),
7884#ifdef CONFIG_PM
7885 .suspend = ixgbe_suspend,
7886 .resume = ixgbe_resume,
7887#endif
7888 .shutdown = ixgbe_shutdown,
7889 .err_handler = &ixgbe_err_handler
7890};
7891
7892/**
7893 * ixgbe_init_module - Driver Registration Routine
7894 *
7895 * ixgbe_init_module is the first routine called when the driver is
7896 * loaded. All it does is register with the PCI subsystem.
7897 **/
7898static int __init ixgbe_init_module(void)
7899{
7900 int ret;
c7689578 7901 pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version);
849c4542 7902 pr_info("%s\n", ixgbe_copyright);
9a799d71 7903
5dd2d332 7904#ifdef CONFIG_IXGBE_DCA
bd0362dd 7905 dca_register_notify(&dca_notifier);
bd0362dd 7906#endif
5dd2d332 7907
9a799d71
AK		 7908 ret = pci_register_driver(&ixgbe_driver);
7909 return ret;
7910}
b4617240 7911
9a799d71
AK		 7912module_init(ixgbe_init_module);
7913
7914/**
7915 * ixgbe_exit_module - Driver Exit Cleanup Routine
7916 *
7917 * ixgbe_exit_module is called just before the driver is removed
7918 * from memory.
7919 **/
7920static void __exit ixgbe_exit_module(void)
7921{
5dd2d332 7922#ifdef CONFIG_IXGBE_DCA
bd0362dd
JC		 7923 dca_unregister_notify(&dca_notifier);
7924#endif
9a799d71 7925 pci_unregister_driver(&ixgbe_driver);
1a51502b 7926 rcu_barrier(); /* Wait for completion of call_rcu()'s */
9a799d71 7927}
bd0362dd 7928
5dd2d332 7929#ifdef CONFIG_IXGBE_DCA
bd0362dd 7930static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event,
e8e9f696 7931 void *p)
bd0362dd
JC		 7932{
7933 int ret_val;
7934
7935 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event,
e8e9f696 7936 __ixgbe_notify_dca);
bd0362dd
JC		 7937
7938 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
7939}
b453368d 7940
5dd2d332 7941#endif /* CONFIG_IXGBE_DCA */
849c4542 7942
9a799d71
AK		 7943module_exit(ixgbe_exit_module);
7944
7945/* ixgbe_main.c */
Linux 6.x block layer and io_uring tree(s)