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i40e: Change unknown event error msg to ignore message
[deliverable/linux.git] / drivers / net / ethernet / intel / i40evf / i40evf_main.c
CommitLineData
5eae00c5
GR		 1/*******************************************************************************
2 *
3 * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
eaab59e9 4 * Copyright(c) 2013 - 2016 Intel Corporation.
5eae00c5
GR		 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 *
b831607d
JB		 15 * You should have received a copy of the GNU General Public License along
16 * with this program. If not, see <http://www.gnu.org/licenses/>.
17 *
5eae00c5
GR		 18 * The full GNU General Public License is included in this distribution in
19 * the file called "COPYING".
20 *
21 * Contact Information:
22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 ******************************************************************************/
26
27#include "i40evf.h"
28#include "i40e_prototype.h"
29static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter);
30static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter);
31static int i40evf_close(struct net_device *netdev);
32
33char i40evf_driver_name[] = "i40evf";
34static const char i40evf_driver_string[] =
eaab59e9 35 "Intel(R) 40-10 Gigabit Virtual Function Network Driver";
5eae00c5 36
69ebe955
MW		 37#define DRV_KERN "-k"
38
39#define DRV_VERSION_MAJOR 1
40#define DRV_VERSION_MINOR 4
b8f1343a 41#define DRV_VERSION_BUILD 15
69ebe955
MW		 42#define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
43 __stringify(DRV_VERSION_MINOR) "." \
44 __stringify(DRV_VERSION_BUILD) \
45 DRV_KERN
5eae00c5
GR		 46const char i40evf_driver_version[] = DRV_VERSION;
47static const char i40evf_copyright[] =
bf41846e 48 "Copyright (c) 2013 - 2015 Intel Corporation.";
5eae00c5
GR		 49
50/* i40evf_pci_tbl - PCI Device ID Table
51 *
52 * Wildcard entries (PCI_ANY_ID) should come last
53 * Last entry must be all 0s
54 *
55 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
56 * Class, Class Mask, private data (not used) }
57 */
9baa3c34 58static const struct pci_device_id i40evf_pci_tbl[] = {
ab60085e 59 {PCI_VDEVICE(INTEL, I40E_DEV_ID_VF), 0},
87e6c1d7 60 {PCI_VDEVICE(INTEL, I40E_DEV_ID_X722_VF), 0},
5eae00c5
GR		 61 /* required last entry */
62 {0, }
63};
64
65MODULE_DEVICE_TABLE(pci, i40evf_pci_tbl);
66
67MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
68MODULE_DESCRIPTION("Intel(R) XL710 X710 Virtual Function Network Driver");
69MODULE_LICENSE("GPL");
70MODULE_VERSION(DRV_VERSION);
71
2803b16c
JB		 72static struct workqueue_struct *i40evf_wq;
73
5eae00c5
GR		 74/**
75 * i40evf_allocate_dma_mem_d - OS specific memory alloc for shared code
76 * @hw: pointer to the HW structure
77 * @mem: ptr to mem struct to fill out
78 * @size: size of memory requested
79 * @alignment: what to align the allocation to
80 **/
81i40e_status i40evf_allocate_dma_mem_d(struct i40e_hw *hw,
82 struct i40e_dma_mem *mem,
83 u64 size, u32 alignment)
84{
85 struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back;
86
87 if (!mem)
88 return I40E_ERR_PARAM;
89
90 mem->size = ALIGN(size, alignment);
91 mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size,
92 (dma_addr_t *)&mem->pa, GFP_KERNEL);
93 if (mem->va)
94 return 0;
95 else
96 return I40E_ERR_NO_MEMORY;
97}
98
99/**
100 * i40evf_free_dma_mem_d - OS specific memory free for shared code
101 * @hw: pointer to the HW structure
102 * @mem: ptr to mem struct to free
103 **/
104i40e_status i40evf_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
105{
106 struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back;
107
108 if (!mem || !mem->va)
109 return I40E_ERR_PARAM;
110 dma_free_coherent(&adapter->pdev->dev, mem->size,
111 mem->va, (dma_addr_t)mem->pa);
112 return 0;
113}
114
115/**
116 * i40evf_allocate_virt_mem_d - OS specific memory alloc for shared code
117 * @hw: pointer to the HW structure
118 * @mem: ptr to mem struct to fill out
119 * @size: size of memory requested
120 **/
121i40e_status i40evf_allocate_virt_mem_d(struct i40e_hw *hw,
122 struct i40e_virt_mem *mem, u32 size)
123{
124 if (!mem)
125 return I40E_ERR_PARAM;
126
127 mem->size = size;
128 mem->va = kzalloc(size, GFP_KERNEL);
129
130 if (mem->va)
131 return 0;
132 else
133 return I40E_ERR_NO_MEMORY;
134}
135
136/**
137 * i40evf_free_virt_mem_d - OS specific memory free for shared code
138 * @hw: pointer to the HW structure
139 * @mem: ptr to mem struct to free
140 **/
141i40e_status i40evf_free_virt_mem_d(struct i40e_hw *hw,
142 struct i40e_virt_mem *mem)
143{
144 if (!mem)
145 return I40E_ERR_PARAM;
146
147 /* it's ok to kfree a NULL pointer */
148 kfree(mem->va);
149
150 return 0;
151}
152
153/**
154 * i40evf_debug_d - OS dependent version of debug printing
155 * @hw: pointer to the HW structure
156 * @mask: debug level mask
157 * @fmt_str: printf-type format description
158 **/
159void i40evf_debug_d(void *hw, u32 mask, char *fmt_str, ...)
160{
161 char buf[512];
162 va_list argptr;
163
164 if (!(mask & ((struct i40e_hw *)hw)->debug_mask))
165 return;
166
167 va_start(argptr, fmt_str);
168 vsnprintf(buf, sizeof(buf), fmt_str, argptr);
169 va_end(argptr);
170
171 /* the debug string is already formatted with a newline */
172 pr_info("%s", buf);
173}
174
00e5ec4b
MW		 175/**
176 * i40evf_schedule_reset - Set the flags and schedule a reset event
177 * @adapter: board private structure
178 **/
179void i40evf_schedule_reset(struct i40evf_adapter *adapter)
180{
181 if (!(adapter->flags &
182 (I40EVF_FLAG_RESET_PENDING | I40EVF_FLAG_RESET_NEEDED))) {
183 adapter->flags |= I40EVF_FLAG_RESET_NEEDED;
184 schedule_work(&adapter->reset_task);
185 }
186}
187
5eae00c5
GR		 188/**
189 * i40evf_tx_timeout - Respond to a Tx Hang
190 * @netdev: network interface device structure
191 **/
192static void i40evf_tx_timeout(struct net_device *netdev)
193{
194 struct i40evf_adapter *adapter = netdev_priv(netdev);
195
196 adapter->tx_timeout_count++;
00e5ec4b 197 i40evf_schedule_reset(adapter);
5eae00c5
GR		 198}
199
200/**
201 * i40evf_misc_irq_disable - Mask off interrupt generation on the NIC
202 * @adapter: board private structure
203 **/
204static void i40evf_misc_irq_disable(struct i40evf_adapter *adapter)
205{
206 struct i40e_hw *hw = &adapter->hw;
75a64435 207
5eae00c5
GR		 208 wr32(hw, I40E_VFINT_DYN_CTL01, 0);
209
210 /* read flush */
211 rd32(hw, I40E_VFGEN_RSTAT);
212
213 synchronize_irq(adapter->msix_entries[0].vector);
214}
215
216/**
217 * i40evf_misc_irq_enable - Enable default interrupt generation settings
218 * @adapter: board private structure
219 **/
220static void i40evf_misc_irq_enable(struct i40evf_adapter *adapter)
221{
222 struct i40e_hw *hw = &adapter->hw;
75a64435 223
5eae00c5
GR		 224 wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK |
225 I40E_VFINT_DYN_CTL01_ITR_INDX_MASK);
b1f3366b 226 wr32(hw, I40E_VFINT_ICR0_ENA1, I40E_VFINT_ICR0_ENA1_ADMINQ_MASK);
5eae00c5
GR		 227
228 /* read flush */
229 rd32(hw, I40E_VFGEN_RSTAT);
230}
231
232/**
233 * i40evf_irq_disable - Mask off interrupt generation on the NIC
234 * @adapter: board private structure
235 **/
236static void i40evf_irq_disable(struct i40evf_adapter *adapter)
237{
238 int i;
239 struct i40e_hw *hw = &adapter->hw;
240
dbb01c8a
MW		 241 if (!adapter->msix_entries)
242 return;
243
5eae00c5
GR		 244 for (i = 1; i < adapter->num_msix_vectors; i++) {
245 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), 0);
246 synchronize_irq(adapter->msix_entries[i].vector);
247 }
248 /* read flush */
249 rd32(hw, I40E_VFGEN_RSTAT);
5eae00c5
GR		 250}
251
252/**
253 * i40evf_irq_enable_queues - Enable interrupt for specified queues
254 * @adapter: board private structure
255 * @mask: bitmap of queues to enable
256 **/
257void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask)
258{
259 struct i40e_hw *hw = &adapter->hw;
260 int i;
261
262 for (i = 1; i < adapter->num_msix_vectors; i++) {
41a1d04b 263 if (mask & BIT(i - 1)) {
5eae00c5
GR		 264 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1),
265 I40E_VFINT_DYN_CTLN1_INTENA_MASK |
97bf75f1 266 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK |
b1f3366b 267 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK);
5eae00c5
GR		 268 }
269 }
270}
271
272/**
273 * i40evf_fire_sw_int - Generate SW interrupt for specified vectors
274 * @adapter: board private structure
275 * @mask: bitmap of vectors to trigger
276 **/
75a64435 277static void i40evf_fire_sw_int(struct i40evf_adapter *adapter, u32 mask)
5eae00c5
GR		 278{
279 struct i40e_hw *hw = &adapter->hw;
280 int i;
d82acb35 281 u32 dyn_ctl;
5eae00c5 282
164ec1bf
MW		 283 if (mask & 1) {
284 dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTL01);
b1f3366b 285 dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK |
97bf75f1 286 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK |
b1f3366b 287 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK;
164ec1bf
MW		 288 wr32(hw, I40E_VFINT_DYN_CTL01, dyn_ctl);
289 }
5eae00c5 290 for (i = 1; i < adapter->num_msix_vectors; i++) {
41a1d04b 291 if (mask & BIT(i)) {
5eae00c5 292 dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTLN1(i - 1));
b1f3366b 293 dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK |
97bf75f1 294 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK |
b1f3366b 295 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK;
5eae00c5
GR		 296 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), dyn_ctl);
297 }
298 }
299}
300
301/**
302 * i40evf_irq_enable - Enable default interrupt generation settings
303 * @adapter: board private structure
69c1d70a 304 * @flush: boolean value whether to run rd32()
5eae00c5
GR		 305 **/
306void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush)
307{
308 struct i40e_hw *hw = &adapter->hw;
309
164ec1bf 310 i40evf_misc_irq_enable(adapter);
5eae00c5
GR		 311 i40evf_irq_enable_queues(adapter, ~0);
312
313 if (flush)
314 rd32(hw, I40E_VFGEN_RSTAT);
315}
316
317/**
318 * i40evf_msix_aq - Interrupt handler for vector 0
319 * @irq: interrupt number
320 * @data: pointer to netdev
321 **/
322static irqreturn_t i40evf_msix_aq(int irq, void *data)
323{
324 struct net_device *netdev = data;
325 struct i40evf_adapter *adapter = netdev_priv(netdev);
326 struct i40e_hw *hw = &adapter->hw;
327 u32 val;
5eae00c5 328
cfbe4dba
JB		 329 /* handle non-queue interrupts, these reads clear the registers */
330 val = rd32(hw, I40E_VFINT_ICR01);
331 val = rd32(hw, I40E_VFINT_ICR0_ENA1);
5eae00c5 332
ed17f7e5
JS		 333 val = rd32(hw, I40E_VFINT_DYN_CTL01) |
334 I40E_VFINT_DYN_CTL01_CLEARPBA_MASK;
5eae00c5
GR		 335 wr32(hw, I40E_VFINT_DYN_CTL01, val);
336
5eae00c5
GR		 337 /* schedule work on the private workqueue */
338 schedule_work(&adapter->adminq_task);
339
340 return IRQ_HANDLED;
341}
342
343/**
344 * i40evf_msix_clean_rings - MSIX mode Interrupt Handler
345 * @irq: interrupt number
346 * @data: pointer to a q_vector
347 **/
348static irqreturn_t i40evf_msix_clean_rings(int irq, void *data)
349{
350 struct i40e_q_vector *q_vector = data;
351
352 if (!q_vector->tx.ring && !q_vector->rx.ring)
353 return IRQ_HANDLED;
354
5d3465a1 355 napi_schedule_irqoff(&q_vector->napi);
5eae00c5
GR		 356
357 return IRQ_HANDLED;
358}
359
360/**
361 * i40evf_map_vector_to_rxq - associate irqs with rx queues
362 * @adapter: board private structure
363 * @v_idx: interrupt number
364 * @r_idx: queue number
365 **/
366static void
367i40evf_map_vector_to_rxq(struct i40evf_adapter *adapter, int v_idx, int r_idx)
368{
7d96ba1a 369 struct i40e_q_vector *q_vector = &adapter->q_vectors[v_idx];
0dd438d8 370 struct i40e_ring *rx_ring = &adapter->rx_rings[r_idx];
5eae00c5
GR		 371
372 rx_ring->q_vector = q_vector;
373 rx_ring->next = q_vector->rx.ring;
374 rx_ring->vsi = &adapter->vsi;
375 q_vector->rx.ring = rx_ring;
376 q_vector->rx.count++;
377 q_vector->rx.latency_range = I40E_LOW_LATENCY;
ee2319cf 378 q_vector->itr_countdown = ITR_COUNTDOWN_START;
5eae00c5
GR		 379}
380
381/**
382 * i40evf_map_vector_to_txq - associate irqs with tx queues
383 * @adapter: board private structure
384 * @v_idx: interrupt number
385 * @t_idx: queue number
386 **/
387static void
388i40evf_map_vector_to_txq(struct i40evf_adapter *adapter, int v_idx, int t_idx)
389{
7d96ba1a 390 struct i40e_q_vector *q_vector = &adapter->q_vectors[v_idx];
0dd438d8 391 struct i40e_ring *tx_ring = &adapter->tx_rings[t_idx];
5eae00c5
GR		 392
393 tx_ring->q_vector = q_vector;
394 tx_ring->next = q_vector->tx.ring;
395 tx_ring->vsi = &adapter->vsi;
396 q_vector->tx.ring = tx_ring;
397 q_vector->tx.count++;
398 q_vector->tx.latency_range = I40E_LOW_LATENCY;
ee2319cf 399 q_vector->itr_countdown = ITR_COUNTDOWN_START;
5eae00c5 400 q_vector->num_ringpairs++;
41a1d04b 401 q_vector->ring_mask |= BIT(t_idx);
5eae00c5
GR		 402}
403
404/**
405 * i40evf_map_rings_to_vectors - Maps descriptor rings to vectors
406 * @adapter: board private structure to initialize
407 *
408 * This function maps descriptor rings to the queue-specific vectors
409 * we were allotted through the MSI-X enabling code. Ideally, we'd have
410 * one vector per ring/queue, but on a constrained vector budget, we
411 * group the rings as "efficiently" as possible. You would add new
412 * mapping configurations in here.
413 **/
414static int i40evf_map_rings_to_vectors(struct i40evf_adapter *adapter)
415{
416 int q_vectors;
417 int v_start = 0;
418 int rxr_idx = 0, txr_idx = 0;
cc052927
MW		 419 int rxr_remaining = adapter->num_active_queues;
420 int txr_remaining = adapter->num_active_queues;
5eae00c5
GR		 421 int i, j;
422 int rqpv, tqpv;
423 int err = 0;
424
425 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
426
427 /* The ideal configuration...
428 * We have enough vectors to map one per queue.
429 */
973371da 430 if (q_vectors >= (rxr_remaining * 2)) {
5eae00c5
GR		 431 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
432 i40evf_map_vector_to_rxq(adapter, v_start, rxr_idx);
433
434 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
435 i40evf_map_vector_to_txq(adapter, v_start, txr_idx);
436 goto out;
437 }
438
439 /* If we don't have enough vectors for a 1-to-1
440 * mapping, we'll have to group them so there are
441 * multiple queues per vector.
442 * Re-adjusting *qpv takes care of the remainder.
443 */
444 for (i = v_start; i < q_vectors; i++) {
445 rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i);
446 for (j = 0; j < rqpv; j++) {
447 i40evf_map_vector_to_rxq(adapter, i, rxr_idx);
448 rxr_idx++;
449 rxr_remaining--;
450 }
451 }
452 for (i = v_start; i < q_vectors; i++) {
453 tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i);
454 for (j = 0; j < tqpv; j++) {
455 i40evf_map_vector_to_txq(adapter, i, txr_idx);
456 txr_idx++;
457 txr_remaining--;
458 }
459 }
460
461out:
462 adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS;
463
464 return err;
465}
466
7709b4c1
AD		 467#ifdef CONFIG_NET_POLL_CONTROLLER
468/**
469 * i40evf_netpoll - A Polling 'interrupt' handler
470 * @netdev: network interface device structure
471 *
472 * This is used by netconsole to send skbs without having to re-enable
473 * interrupts. It's not called while the normal interrupt routine is executing.
474 **/
475static void i40evf_netpoll(struct net_device *netdev)
476{
477 struct i40evf_adapter *adapter = netdev_priv(netdev);
478 int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
479 int i;
480
481 /* if interface is down do nothing */
482 if (test_bit(__I40E_DOWN, &adapter->vsi.state))
483 return;
484
485 for (i = 0; i < q_vectors; i++)
7d96ba1a 486 i40evf_msix_clean_rings(0, &adapter->q_vectors[i]);
7709b4c1
AD		 487}
488
489#endif
5eae00c5
GR		 490/**
491 * i40evf_request_traffic_irqs - Initialize MSI-X interrupts
492 * @adapter: board private structure
493 *
494 * Allocates MSI-X vectors for tx and rx handling, and requests
495 * interrupts from the kernel.
496 **/
497static int
498i40evf_request_traffic_irqs(struct i40evf_adapter *adapter, char *basename)
499{
500 int vector, err, q_vectors;
501 int rx_int_idx = 0, tx_int_idx = 0;
502
503 i40evf_irq_disable(adapter);
504 /* Decrement for Other and TCP Timer vectors */
505 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
506
507 for (vector = 0; vector < q_vectors; vector++) {
7d96ba1a 508 struct i40e_q_vector *q_vector = &adapter->q_vectors[vector];
5eae00c5
GR		 509
510 if (q_vector->tx.ring && q_vector->rx.ring) {
511 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
512 "i40evf-%s-%s-%d", basename,
513 "TxRx", rx_int_idx++);
514 tx_int_idx++;
515 } else if (q_vector->rx.ring) {
516 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
517 "i40evf-%s-%s-%d", basename,
518 "rx", rx_int_idx++);
519 } else if (q_vector->tx.ring) {
520 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
521 "i40evf-%s-%s-%d", basename,
522 "tx", tx_int_idx++);
523 } else {
524 /* skip this unused q_vector */
525 continue;
526 }
527 err = request_irq(
528 adapter->msix_entries[vector + NONQ_VECS].vector,
529 i40evf_msix_clean_rings,
530 0,
531 q_vector->name,
532 q_vector);
533 if (err) {
534 dev_info(&adapter->pdev->dev,
fb43201f 535 "Request_irq failed, error: %d\n", err);
5eae00c5
GR		 536 goto free_queue_irqs;
537 }
538 /* assign the mask for this irq */
539 irq_set_affinity_hint(
540 adapter->msix_entries[vector + NONQ_VECS].vector,
541 q_vector->affinity_mask);
542 }
543
544 return 0;
545
546free_queue_irqs:
547 while (vector) {
548 vector--;
549 irq_set_affinity_hint(
550 adapter->msix_entries[vector + NONQ_VECS].vector,
551 NULL);
552 free_irq(adapter->msix_entries[vector + NONQ_VECS].vector,
7d96ba1a 553 &adapter->q_vectors[vector]);
5eae00c5
GR		 554 }
555 return err;
556}
557
558/**
559 * i40evf_request_misc_irq - Initialize MSI-X interrupts
560 * @adapter: board private structure
561 *
562 * Allocates MSI-X vector 0 and requests interrupts from the kernel. This
563 * vector is only for the admin queue, and stays active even when the netdev
564 * is closed.
565 **/
566static int i40evf_request_misc_irq(struct i40evf_adapter *adapter)
567{
568 struct net_device *netdev = adapter->netdev;
569 int err;
570
b39c1e2c 571 snprintf(adapter->misc_vector_name,
9a21a007
CW		 572 sizeof(adapter->misc_vector_name) - 1, "i40evf-%s:mbx",
573 dev_name(&adapter->pdev->dev));
5eae00c5 574 err = request_irq(adapter->msix_entries[0].vector,
e1dfee8e
MW		 575 &i40evf_msix_aq, 0,
576 adapter->misc_vector_name, netdev);
5eae00c5
GR		 577 if (err) {
578 dev_err(&adapter->pdev->dev,
77fa28be
CS		 579 "request_irq for %s failed: %d\n",
580 adapter->misc_vector_name, err);
5eae00c5
GR		 581 free_irq(adapter->msix_entries[0].vector, netdev);
582 }
583 return err;
584}
585
586/**
587 * i40evf_free_traffic_irqs - Free MSI-X interrupts
588 * @adapter: board private structure
589 *
590 * Frees all MSI-X vectors other than 0.
591 **/
592static void i40evf_free_traffic_irqs(struct i40evf_adapter *adapter)
593{
594 int i;
595 int q_vectors;
75a64435 596
5eae00c5
GR		 597 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
598
599 for (i = 0; i < q_vectors; i++) {
600 irq_set_affinity_hint(adapter->msix_entries[i+1].vector,
601 NULL);
602 free_irq(adapter->msix_entries[i+1].vector,
7d96ba1a 603 &adapter->q_vectors[i]);
5eae00c5
GR		 604 }
605}
606
607/**
608 * i40evf_free_misc_irq - Free MSI-X miscellaneous vector
609 * @adapter: board private structure
610 *
611 * Frees MSI-X vector 0.
612 **/
613static void i40evf_free_misc_irq(struct i40evf_adapter *adapter)
614{
615 struct net_device *netdev = adapter->netdev;
616
617 free_irq(adapter->msix_entries[0].vector, netdev);
618}
619
620/**
621 * i40evf_configure_tx - Configure Transmit Unit after Reset
622 * @adapter: board private structure
623 *
624 * Configure the Tx unit of the MAC after a reset.
625 **/
626static void i40evf_configure_tx(struct i40evf_adapter *adapter)
627{
628 struct i40e_hw *hw = &adapter->hw;
629 int i;
75a64435 630
cc052927 631 for (i = 0; i < adapter->num_active_queues; i++)
0dd438d8 632 adapter->tx_rings[i].tail = hw->hw_addr + I40E_QTX_TAIL1(i);
5eae00c5
GR		 633}
634
635/**
636 * i40evf_configure_rx - Configure Receive Unit after Reset
637 * @adapter: board private structure
638 *
639 * Configure the Rx unit of the MAC after a reset.
640 **/
641static void i40evf_configure_rx(struct i40evf_adapter *adapter)
642{
643 struct i40e_hw *hw = &adapter->hw;
644 struct net_device *netdev = adapter->netdev;
645 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
646 int i;
647 int rx_buf_len;
648
649
5eae00c5 650 /* Set the RX buffer length according to the mode */
00e5ec4b
MW		 651 if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED ||
652 netdev->mtu <= ETH_DATA_LEN)
653 rx_buf_len = I40EVF_RXBUFFER_2048;
654 else
655 rx_buf_len = ALIGN(max_frame, 1024);
5eae00c5 656
cc052927 657 for (i = 0; i < adapter->num_active_queues; i++) {
0dd438d8
MW		 658 adapter->rx_rings[i].tail = hw->hw_addr + I40E_QRX_TAIL1(i);
659 adapter->rx_rings[i].rx_buf_len = rx_buf_len;
00e5ec4b
MW		 660 if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED) {
661 set_ring_ps_enabled(&adapter->rx_rings[i]);
662 adapter->rx_rings[i].rx_hdr_len = I40E_RX_HDR_SIZE;
663 } else {
664 clear_ring_ps_enabled(&adapter->rx_rings[i]);
665 }
5eae00c5
GR		 666 }
667}
668
669/**
670 * i40evf_find_vlan - Search filter list for specific vlan filter
671 * @adapter: board private structure
672 * @vlan: vlan tag
673 *
674 * Returns ptr to the filter object or NULL
675 **/
676static struct
677i40evf_vlan_filter *i40evf_find_vlan(struct i40evf_adapter *adapter, u16 vlan)
678{
679 struct i40evf_vlan_filter *f;
680
681 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
682 if (vlan == f->vlan)
683 return f;
684 }
685 return NULL;
686}
687
688/**
689 * i40evf_add_vlan - Add a vlan filter to the list
690 * @adapter: board private structure
691 * @vlan: VLAN tag
692 *
693 * Returns ptr to the filter object or NULL when no memory available.
694 **/
695static struct
696i40evf_vlan_filter *i40evf_add_vlan(struct i40evf_adapter *adapter, u16 vlan)
697{
13acb546
MW		 698 struct i40evf_vlan_filter *f = NULL;
699 int count = 50;
700
701 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
702 &adapter->crit_section)) {
703 udelay(1);
704 if (--count == 0)
705 goto out;
706 }
5eae00c5
GR		 707
708 f = i40evf_find_vlan(adapter, vlan);
348d4994 709 if (!f) {
5eae00c5 710 f = kzalloc(sizeof(*f), GFP_ATOMIC);
348d4994 711 if (!f)
13acb546 712 goto clearout;
249c8b8d 713
5eae00c5
GR		 714 f->vlan = vlan;
715
716 INIT_LIST_HEAD(&f->list);
717 list_add(&f->list, &adapter->vlan_filter_list);
718 f->add = true;
719 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
720 }
721
13acb546
MW		 722clearout:
723 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
724out:
5eae00c5
GR		 725 return f;
726}
727
728/**
729 * i40evf_del_vlan - Remove a vlan filter from the list
730 * @adapter: board private structure
731 * @vlan: VLAN tag
732 **/
733static void i40evf_del_vlan(struct i40evf_adapter *adapter, u16 vlan)
734{
735 struct i40evf_vlan_filter *f;
13acb546
MW		 736 int count = 50;
737
738 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
739 &adapter->crit_section)) {
740 udelay(1);
741 if (--count == 0)
742 return;
743 }
5eae00c5
GR		 744
745 f = i40evf_find_vlan(adapter, vlan);
746 if (f) {
747 f->remove = true;
748 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
749 }
13acb546 750 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
5eae00c5
GR		 751}
752
753/**
754 * i40evf_vlan_rx_add_vid - Add a VLAN filter to a device
755 * @netdev: network device struct
756 * @vid: VLAN tag
757 **/
758static int i40evf_vlan_rx_add_vid(struct net_device *netdev,
75a64435 759 __always_unused __be16 proto, u16 vid)
5eae00c5
GR		 760{
761 struct i40evf_adapter *adapter = netdev_priv(netdev);
762
8ed995ff
MW		 763 if (!VLAN_ALLOWED(adapter))
764 return -EIO;
5eae00c5
GR		 765 if (i40evf_add_vlan(adapter, vid) == NULL)
766 return -ENOMEM;
767 return 0;
768}
769
770/**
771 * i40evf_vlan_rx_kill_vid - Remove a VLAN filter from a device
772 * @netdev: network device struct
773 * @vid: VLAN tag
774 **/
775static int i40evf_vlan_rx_kill_vid(struct net_device *netdev,
75a64435 776 __always_unused __be16 proto, u16 vid)
5eae00c5
GR		 777{
778 struct i40evf_adapter *adapter = netdev_priv(netdev);
779
8ed995ff
MW		 780 if (VLAN_ALLOWED(adapter)) {
781 i40evf_del_vlan(adapter, vid);
782 return 0;
783 }
784 return -EIO;
5eae00c5
GR		 785}
786
787/**
788 * i40evf_find_filter - Search filter list for specific mac filter
789 * @adapter: board private structure
790 * @macaddr: the MAC address
791 *
792 * Returns ptr to the filter object or NULL
793 **/
794static struct
795i40evf_mac_filter *i40evf_find_filter(struct i40evf_adapter *adapter,
796 u8 *macaddr)
797{
798 struct i40evf_mac_filter *f;
799
800 if (!macaddr)
801 return NULL;
802
803 list_for_each_entry(f, &adapter->mac_filter_list, list) {
804 if (ether_addr_equal(macaddr, f->macaddr))
805 return f;
806 }
807 return NULL;
808}
809
810/**
811 * i40e_add_filter - Add a mac filter to the filter list
812 * @adapter: board private structure
813 * @macaddr: the MAC address
814 *
815 * Returns ptr to the filter object or NULL when no memory available.
816 **/
817static struct
818i40evf_mac_filter *i40evf_add_filter(struct i40evf_adapter *adapter,
819 u8 *macaddr)
820{
821 struct i40evf_mac_filter *f;
54e16f64 822 int count = 50;
5eae00c5
GR		 823
824 if (!macaddr)
825 return NULL;
826
827 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
54e16f64 828 &adapter->crit_section)) {
b65476cd 829 udelay(1);
54e16f64
MW		 830 if (--count == 0)
831 return NULL;
832 }
5eae00c5
GR		 833
834 f = i40evf_find_filter(adapter, macaddr);
348d4994 835 if (!f) {
5eae00c5 836 f = kzalloc(sizeof(*f), GFP_ATOMIC);
348d4994 837 if (!f) {
5eae00c5
GR		 838 clear_bit(__I40EVF_IN_CRITICAL_TASK,
839 &adapter->crit_section);
840 return NULL;
841 }
842
9a173901 843 ether_addr_copy(f->macaddr, macaddr);
5eae00c5
GR		 844
845 list_add(&f->list, &adapter->mac_filter_list);
846 f->add = true;
847 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
848 }
849
850 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
851 return f;
852}
853
854/**
855 * i40evf_set_mac - NDO callback to set port mac address
856 * @netdev: network interface device structure
857 * @p: pointer to an address structure
858 *
859 * Returns 0 on success, negative on failure
860 **/
861static int i40evf_set_mac(struct net_device *netdev, void *p)
862{
863 struct i40evf_adapter *adapter = netdev_priv(netdev);
864 struct i40e_hw *hw = &adapter->hw;
865 struct i40evf_mac_filter *f;
866 struct sockaddr *addr = p;
867
868 if (!is_valid_ether_addr(addr->sa_data))
869 return -EADDRNOTAVAIL;
870
871 if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
872 return 0;
873
14e52ee2
MW		 874 if (adapter->flags & I40EVF_FLAG_ADDR_SET_BY_PF)
875 return -EPERM;
876
877 f = i40evf_find_filter(adapter, hw->mac.addr);
878 if (f) {
879 f->remove = true;
880 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
881 }
882
5eae00c5
GR		 883 f = i40evf_add_filter(adapter, addr->sa_data);
884 if (f) {
9a173901
GR		 885 ether_addr_copy(hw->mac.addr, addr->sa_data);
886 ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr);
5eae00c5
GR		 887 }
888
889 return (f == NULL) ? -ENOMEM : 0;
890}
891
892/**
893 * i40evf_set_rx_mode - NDO callback to set the netdev filters
894 * @netdev: network interface device structure
895 **/
896static void i40evf_set_rx_mode(struct net_device *netdev)
897{
898 struct i40evf_adapter *adapter = netdev_priv(netdev);
899 struct i40evf_mac_filter *f, *ftmp;
900 struct netdev_hw_addr *uca;
901 struct netdev_hw_addr *mca;
2f41f335 902 struct netdev_hw_addr *ha;
54e16f64 903 int count = 50;
5eae00c5
GR		 904
905 /* add addr if not already in the filter list */
906 netdev_for_each_uc_addr(uca, netdev) {
907 i40evf_add_filter(adapter, uca->addr);
908 }
909 netdev_for_each_mc_addr(mca, netdev) {
910 i40evf_add_filter(adapter, mca->addr);
911 }
912
913 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
54e16f64 914 &adapter->crit_section)) {
b65476cd 915 udelay(1);
54e16f64
MW		 916 if (--count == 0) {
917 dev_err(&adapter->pdev->dev,
918 "Failed to get lock in %s\n", __func__);
919 return;
920 }
921 }
5eae00c5
GR		 922 /* remove filter if not in netdev list */
923 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
2f41f335
SN		 924 netdev_for_each_mc_addr(mca, netdev)
925 if (ether_addr_equal(mca->addr, f->macaddr))
926 goto bottom_of_search_loop;
927
928 netdev_for_each_uc_addr(uca, netdev)
929 if (ether_addr_equal(uca->addr, f->macaddr))
930 goto bottom_of_search_loop;
931
932 for_each_dev_addr(netdev, ha)
933 if (ether_addr_equal(ha->addr, f->macaddr))
934 goto bottom_of_search_loop;
935
936 if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr))
937 goto bottom_of_search_loop;
938
939 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
940 f->remove = true;
941 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
942
943bottom_of_search_loop:
944 continue;
5eae00c5
GR		 945 }
946 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
947}
948
949/**
950 * i40evf_napi_enable_all - enable NAPI on all queue vectors
951 * @adapter: board private structure
952 **/
953static void i40evf_napi_enable_all(struct i40evf_adapter *adapter)
954{
955 int q_idx;
956 struct i40e_q_vector *q_vector;
957 int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
958
959 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
960 struct napi_struct *napi;
75a64435 961
7d96ba1a 962 q_vector = &adapter->q_vectors[q_idx];
5eae00c5
GR		 963 napi = &q_vector->napi;
964 napi_enable(napi);
965 }
966}
967
968/**
969 * i40evf_napi_disable_all - disable NAPI on all queue vectors
970 * @adapter: board private structure
971 **/
972static void i40evf_napi_disable_all(struct i40evf_adapter *adapter)
973{
974 int q_idx;
975 struct i40e_q_vector *q_vector;
976 int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
977
978 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
7d96ba1a 979 q_vector = &adapter->q_vectors[q_idx];
5eae00c5
GR		 980 napi_disable(&q_vector->napi);
981 }
982}
983
984/**
985 * i40evf_configure - set up transmit and receive data structures
986 * @adapter: board private structure
987 **/
988static void i40evf_configure(struct i40evf_adapter *adapter)
989{
990 struct net_device *netdev = adapter->netdev;
991 int i;
992
993 i40evf_set_rx_mode(netdev);
994
995 i40evf_configure_tx(adapter);
996 i40evf_configure_rx(adapter);
997 adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES;
998
cc052927 999 for (i = 0; i < adapter->num_active_queues; i++) {
0dd438d8 1000 struct i40e_ring *ring = &adapter->rx_rings[i];
75a64435 1001
00e5ec4b
MW		 1002 if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED) {
1003 i40evf_alloc_rx_headers(ring);
1004 i40evf_alloc_rx_buffers_ps(ring, ring->count);
1005 } else {
a132af24 1006 i40evf_alloc_rx_buffers_1buf(ring, ring->count);
00e5ec4b 1007 }
5eae00c5
GR		 1008 ring->next_to_use = ring->count - 1;
1009 writel(ring->next_to_use, ring->tail);
1010 }
1011}
1012
1013/**
1014 * i40evf_up_complete - Finish the last steps of bringing up a connection
1015 * @adapter: board private structure
1016 **/
1017static int i40evf_up_complete(struct i40evf_adapter *adapter)
1018{
1019 adapter->state = __I40EVF_RUNNING;
1020 clear_bit(__I40E_DOWN, &adapter->vsi.state);
1021
1022 i40evf_napi_enable_all(adapter);
1023
1024 adapter->aq_required |= I40EVF_FLAG_AQ_ENABLE_QUEUES;
1025 mod_timer_pending(&adapter->watchdog_timer, jiffies + 1);
1026 return 0;
1027}
1028
5eae00c5
GR		 1029/**
1030 * i40e_down - Shutdown the connection processing
1031 * @adapter: board private structure
1032 **/
1033void i40evf_down(struct i40evf_adapter *adapter)
1034{
1035 struct net_device *netdev = adapter->netdev;
1036 struct i40evf_mac_filter *f;
1037
209dc4da 1038 if (adapter->state <= __I40EVF_DOWN_PENDING)
ddf0b3a6
MW		 1039 return;
1040
53d0b3ae
MW		 1041 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
1042 &adapter->crit_section))
1043 usleep_range(500, 1000);
1044
63e18c25
MW		 1045 netif_carrier_off(netdev);
1046 netif_tx_disable(netdev);
748c434b 1047 i40evf_napi_disable_all(adapter);
63e18c25 1048 i40evf_irq_disable(adapter);
53d0b3ae 1049
ef8693eb 1050 /* remove all MAC filters */
5eae00c5
GR		 1051 list_for_each_entry(f, &adapter->mac_filter_list, list) {
1052 f->remove = true;
1053 }
ed1f5b58
MW		 1054 /* remove all VLAN filters */
1055 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
1056 f->remove = true;
1057 }
ef8693eb
MW		 1058 if (!(adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) &&
1059 adapter->state != __I40EVF_RESETTING) {
53d0b3ae
MW		 1060 /* cancel any current operation */
1061 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
53d0b3ae
MW		 1062 /* Schedule operations to close down the HW. Don't wait
1063 * here for this to complete. The watchdog is still running
1064 * and it will take care of this.
1065 */
1066 adapter->aq_required = I40EVF_FLAG_AQ_DEL_MAC_FILTER;
ed1f5b58 1067 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
ef8693eb 1068 adapter->aq_required |= I40EVF_FLAG_AQ_DISABLE_QUEUES;
ef8693eb 1069 }
5eae00c5 1070
53d0b3ae 1071 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
5eae00c5
GR		 1072}
1073
1074/**
1075 * i40evf_acquire_msix_vectors - Setup the MSIX capability
1076 * @adapter: board private structure
1077 * @vectors: number of vectors to request
1078 *
1079 * Work with the OS to set up the MSIX vectors needed.
1080 *
1081 * Returns 0 on success, negative on failure
1082 **/
1083static int
1084i40evf_acquire_msix_vectors(struct i40evf_adapter *adapter, int vectors)
1085{
1086 int err, vector_threshold;
1087
1088 /* We'll want at least 3 (vector_threshold):
1089 * 0) Other (Admin Queue and link, mostly)
1090 * 1) TxQ[0] Cleanup
1091 * 2) RxQ[0] Cleanup
1092 */
1093 vector_threshold = MIN_MSIX_COUNT;
1094
1095 /* The more we get, the more we will assign to Tx/Rx Cleanup
1096 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1097 * Right now, we simply care about how many we'll get; we'll
1098 * set them up later while requesting irq's.
1099 */
fc2f2f5d
AG		 1100 err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
1101 vector_threshold, vectors);
1102 if (err < 0) {
80e72893 1103 dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n");
5eae00c5
GR		 1104 kfree(adapter->msix_entries);
1105 adapter->msix_entries = NULL;
fc2f2f5d 1106 return err;
5eae00c5 1107 }
fc2f2f5d
AG		 1108
1109 /* Adjust for only the vectors we'll use, which is minimum
1110 * of max_msix_q_vectors + NONQ_VECS, or the number of
1111 * vectors we were allocated.
1112 */
1113 adapter->num_msix_vectors = err;
1114 return 0;
5eae00c5
GR		 1115}
1116
1117/**
1118 * i40evf_free_queues - Free memory for all rings
1119 * @adapter: board private structure to initialize
1120 *
1121 * Free all of the memory associated with queue pairs.
1122 **/
1123static void i40evf_free_queues(struct i40evf_adapter *adapter)
1124{
5eae00c5
GR		 1125 if (!adapter->vsi_res)
1126 return;
0dd438d8 1127 kfree(adapter->tx_rings);
10311540 1128 adapter->tx_rings = NULL;
0dd438d8 1129 kfree(adapter->rx_rings);
10311540 1130 adapter->rx_rings = NULL;
5eae00c5
GR		 1131}
1132
1133/**
1134 * i40evf_alloc_queues - Allocate memory for all rings
1135 * @adapter: board private structure to initialize
1136 *
1137 * We allocate one ring per queue at run-time since we don't know the
1138 * number of queues at compile-time. The polling_netdev array is
1139 * intended for Multiqueue, but should work fine with a single queue.
1140 **/
1141static int i40evf_alloc_queues(struct i40evf_adapter *adapter)
1142{
1143 int i;
1144
0dd438d8
MW		 1145 adapter->tx_rings = kcalloc(adapter->num_active_queues,
1146 sizeof(struct i40e_ring), GFP_KERNEL);
1147 if (!adapter->tx_rings)
1148 goto err_out;
1149 adapter->rx_rings = kcalloc(adapter->num_active_queues,
1150 sizeof(struct i40e_ring), GFP_KERNEL);
1151 if (!adapter->rx_rings)
1152 goto err_out;
1153
cc052927 1154 for (i = 0; i < adapter->num_active_queues; i++) {
5eae00c5
GR		 1155 struct i40e_ring *tx_ring;
1156 struct i40e_ring *rx_ring;
1157
0dd438d8 1158 tx_ring = &adapter->tx_rings[i];
5eae00c5
GR		 1159
1160 tx_ring->queue_index = i;
1161 tx_ring->netdev = adapter->netdev;
1162 tx_ring->dev = &adapter->pdev->dev;
d732a184 1163 tx_ring->count = adapter->tx_desc_count;
1f012279
ASJ		 1164 if (adapter->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
1165 tx_ring->flags |= I40E_TXR_FLAGS_WB_ON_ITR;
5eae00c5 1166
0dd438d8 1167 rx_ring = &adapter->rx_rings[i];
5eae00c5
GR		 1168 rx_ring->queue_index = i;
1169 rx_ring->netdev = adapter->netdev;
1170 rx_ring->dev = &adapter->pdev->dev;
d732a184 1171 rx_ring->count = adapter->rx_desc_count;
5eae00c5
GR		 1172 }
1173
1174 return 0;
1175
1176err_out:
1177 i40evf_free_queues(adapter);
1178 return -ENOMEM;
1179}
1180
1181/**
1182 * i40evf_set_interrupt_capability - set MSI-X or FAIL if not supported
1183 * @adapter: board private structure to initialize
1184 *
1185 * Attempt to configure the interrupts using the best available
1186 * capabilities of the hardware and the kernel.
1187 **/
1188static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter)
1189{
1190 int vector, v_budget;
1191 int pairs = 0;
1192 int err = 0;
1193
1194 if (!adapter->vsi_res) {
1195 err = -EIO;
1196 goto out;
1197 }
cc052927 1198 pairs = adapter->num_active_queues;
5eae00c5
GR		 1199
1200 /* It's easy to be greedy for MSI-X vectors, but it really
1201 * doesn't do us much good if we have a lot more vectors
1202 * than CPU's. So let's be conservative and only ask for
1203 * (roughly) twice the number of vectors as there are CPU's.
1204 */
30a500e2
MW		 1205 v_budget = min_t(int, pairs, (int)(num_online_cpus() * 2)) + NONQ_VECS;
1206 v_budget = min_t(int, v_budget, (int)adapter->vf_res->max_vectors);
5eae00c5 1207
5eae00c5
GR		 1208 adapter->msix_entries = kcalloc(v_budget,
1209 sizeof(struct msix_entry), GFP_KERNEL);
1210 if (!adapter->msix_entries) {
1211 err = -ENOMEM;
1212 goto out;
1213 }
1214
1215 for (vector = 0; vector < v_budget; vector++)
1216 adapter->msix_entries[vector].entry = vector;
1217
313ed2d5 1218 err = i40evf_acquire_msix_vectors(adapter, v_budget);
5eae00c5
GR		 1219
1220out:
e6c4cf6f
MW		 1221 netif_set_real_num_rx_queues(adapter->netdev, pairs);
1222 netif_set_real_num_tx_queues(adapter->netdev, pairs);
5eae00c5
GR		 1223 return err;
1224}
1225
e25d00b8 1226/**
2c86ac3c 1227 * i40e_config_rss_aq - Prepare for RSS using AQ commands
e25d00b8
ASJ		 1228 * @vsi: vsi structure
1229 * @seed: RSS hash seed
2c86ac3c
HZ		 1230 * @lut: Lookup table
1231 * @lut_size: Lookup table size
1232 *
1233 * Return 0 on success, negative on failure
e25d00b8 1234 **/
2c86ac3c
HZ		 1235static int i40evf_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
1236 u8 *lut, u16 lut_size)
e25d00b8 1237{
e25d00b8
ASJ		 1238 struct i40evf_adapter *adapter = vsi->back;
1239 struct i40e_hw *hw = &adapter->hw;
2c86ac3c 1240 int ret = 0;
e25d00b8
ASJ		 1241
1242 if (!vsi->id)
2c86ac3c 1243 return -EINVAL;
e25d00b8
ASJ		 1244
1245 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
1246 /* bail because we already have a command pending */
e3d132d1 1247 dev_err(&adapter->pdev->dev, "Cannot configure RSS, command %d pending\n",
e25d00b8 1248 adapter->current_op);
2c86ac3c 1249 return -EBUSY;
e25d00b8
ASJ		 1250 }
1251
2c86ac3c
HZ		 1252 if (seed) {
1253 struct i40e_aqc_get_set_rss_key_data *rss_key =
1254 (struct i40e_aqc_get_set_rss_key_data *)seed;
1255 ret = i40evf_aq_set_rss_key(hw, vsi->id, rss_key);
1256 if (ret) {
1257 dev_err(&adapter->pdev->dev, "Cannot set RSS key, err %s aq_err %s\n",
1258 i40evf_stat_str(hw, ret),
1259 i40evf_aq_str(hw, hw->aq.asq_last_status));
1260 return ret;
1261 }
1262 }
e25d00b8 1263
2c86ac3c
HZ		 1264 if (lut) {
1265 ret = i40evf_aq_set_rss_lut(hw, vsi->id, false, lut, lut_size);
1266 if (ret) {
1267 dev_err(&adapter->pdev->dev,
1268 "Cannot set RSS lut, err %s aq_err %s\n",
1269 i40evf_stat_str(hw, ret),
1270 i40evf_aq_str(hw, hw->aq.asq_last_status));
1271 return ret;
1272 }
e25d00b8
ASJ		 1273 }
1274
2c86ac3c 1275 return ret;
e25d00b8
ASJ		 1276}
1277
1278/**
2c86ac3c
HZ		 1279 * i40evf_config_rss_reg - Configure RSS keys and lut by writing registers
1280 * @vsi: Pointer to vsi structure
e25d00b8 1281 * @seed: RSS hash seed
2c86ac3c
HZ		 1282 * @lut: Lookup table
1283 * @lut_size: Lookup table size
1284 *
1285 * Returns 0 on success, negative on failure
e25d00b8 1286 **/
2c86ac3c
HZ		 1287static int i40evf_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
1288 const u8 *lut, u16 lut_size)
e25d00b8 1289{
2c86ac3c 1290 struct i40evf_adapter *adapter = vsi->back;
e25d00b8 1291 struct i40e_hw *hw = &adapter->hw;
2c86ac3c 1292 u16 i;
e25d00b8 1293
2c86ac3c
HZ		 1294 if (seed) {
1295 u32 *seed_dw = (u32 *)seed;
1296
1297 for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++)
1298 wr32(hw, I40E_VFQF_HKEY(i), seed_dw[i]);
1299 }
1300
1301 if (lut) {
1302 u32 *lut_dw = (u32 *)lut;
1303
1304 if (lut_size != I40EVF_HLUT_ARRAY_SIZE)
1305 return -EINVAL;
1306
1307 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
1308 wr32(hw, I40E_VFQF_HLUT(i), lut_dw[i]);
e25d00b8
ASJ		 1309 }
1310 i40e_flush(hw);
2c86ac3c
HZ		 1311
1312 return 0;
1313}
1314
90b02b43
HZ		 1315/**
1316 * * i40evf_get_rss_aq - Get RSS keys and lut by using AQ commands
1317 * @vsi: Pointer to vsi structure
1318 * @seed: RSS hash seed
1319 * @lut: Lookup table
1320 * @lut_size: Lookup table size
1321 *
1322 * Return 0 on success, negative on failure
1323 **/
1324static int i40evf_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
1325 u8 *lut, u16 lut_size)
1326{
1327 struct i40evf_adapter *adapter = vsi->back;
1328 struct i40e_hw *hw = &adapter->hw;
1329 int ret = 0;
1330
1331 if (seed) {
1332 ret = i40evf_aq_get_rss_key(hw, vsi->id,
1333 (struct i40e_aqc_get_set_rss_key_data *)seed);
1334 if (ret) {
1335 dev_err(&adapter->pdev->dev,
1336 "Cannot get RSS key, err %s aq_err %s\n",
1337 i40evf_stat_str(hw, ret),
1338 i40evf_aq_str(hw, hw->aq.asq_last_status));
1339 return ret;
1340 }
1341 }
1342
1343 if (lut) {
1344 ret = i40evf_aq_get_rss_lut(hw, vsi->id, seed, lut, lut_size);
1345 if (ret) {
1346 dev_err(&adapter->pdev->dev,
1347 "Cannot get RSS lut, err %s aq_err %s\n",
1348 i40evf_stat_str(hw, ret),
1349 i40evf_aq_str(hw, hw->aq.asq_last_status));
1350 return ret;
1351 }
1352 }
1353
1354 return ret;
1355}
1356
1357/**
1358 * * i40evf_get_rss_reg - Get RSS keys and lut by reading registers
1359 * @vsi: Pointer to vsi structure
1360 * @seed: RSS hash seed
1361 * @lut: Lookup table
1362 * @lut_size: Lookup table size
1363 *
1364 * Returns 0 on success, negative on failure
1365 **/
1366static int i40evf_get_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
1367 const u8 *lut, u16 lut_size)
1368{
1369 struct i40evf_adapter *adapter = vsi->back;
1370 struct i40e_hw *hw = &adapter->hw;
1371 u16 i;
1372
1373 if (seed) {
1374 u32 *seed_dw = (u32 *)seed;
1375
1376 for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++)
1377 seed_dw[i] = rd32(hw, I40E_VFQF_HKEY(i));
1378 }
1379
1380 if (lut) {
1381 u32 *lut_dw = (u32 *)lut;
1382
1383 if (lut_size != I40EVF_HLUT_ARRAY_SIZE)
1384 return -EINVAL;
1385
1386 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
1387 lut_dw[i] = rd32(hw, I40E_VFQF_HLUT(i));
1388 }
1389
1390 return 0;
1391}
1392
2c86ac3c
HZ		 1393/**
1394 * i40evf_config_rss - Configure RSS keys and lut
1395 * @vsi: Pointer to vsi structure
1396 * @seed: RSS hash seed
1397 * @lut: Lookup table
1398 * @lut_size: Lookup table size
1399 *
1400 * Returns 0 on success, negative on failure
1401 **/
1402int i40evf_config_rss(struct i40e_vsi *vsi, const u8 *seed,
1403 u8 *lut, u16 lut_size)
1404{
1405 struct i40evf_adapter *adapter = vsi->back;
1406
1407 if (RSS_AQ(adapter))
1408 return i40evf_config_rss_aq(vsi, seed, lut, lut_size);
1409 else
1410 return i40evf_config_rss_reg(vsi, seed, lut, lut_size);
1411}
1412
90b02b43
HZ		 1413/**
1414 * i40evf_get_rss - Get RSS keys and lut
1415 * @vsi: Pointer to vsi structure
1416 * @seed: RSS hash seed
1417 * @lut: Lookup table
1418 * @lut_size: Lookup table size
1419 *
1420 * Returns 0 on success, negative on failure
1421 **/
1422int i40evf_get_rss(struct i40e_vsi *vsi, const u8 *seed, u8 *lut, u16 lut_size)
1423{
1424 struct i40evf_adapter *adapter = vsi->back;
1425
1426 if (RSS_AQ(adapter))
1427 return i40evf_get_rss_aq(vsi, seed, lut, lut_size);
1428 else
1429 return i40evf_get_rss_reg(vsi, seed, lut, lut_size);
1430}
1431
2c86ac3c
HZ		 1432/**
1433 * i40evf_fill_rss_lut - Fill the lut with default values
1434 * @lut: Lookup table to be filled with
1435 * @rss_table_size: Lookup table size
1436 * @rss_size: Range of queue number for hashing
1437 **/
1438static void i40evf_fill_rss_lut(u8 *lut, u16 rss_table_size, u16 rss_size)
1439{
1440 u16 i;
1441
1442 for (i = 0; i < rss_table_size; i++)
1443 lut[i] = i % rss_size;
e25d00b8
ASJ		 1444}
1445
1446/**
96a81986 1447 * i40evf_init_rss - Prepare for RSS
e25d00b8 1448 * @adapter: board private structure
2c86ac3c
HZ		 1449 *
1450 * Return 0 on success, negative on failure
e25d00b8 1451 **/
2c86ac3c 1452static int i40evf_init_rss(struct i40evf_adapter *adapter)
e25d00b8 1453{
2c86ac3c 1454 struct i40e_vsi *vsi = &adapter->vsi;
e25d00b8
ASJ		 1455 struct i40e_hw *hw = &adapter->hw;
1456 u8 seed[I40EVF_HKEY_ARRAY_SIZE];
1457 u64 hena;
2c86ac3c
HZ		 1458 u8 *lut;
1459 int ret;
e25d00b8
ASJ		 1460
1461 /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */
3d0da5b7
ASJ		 1462 if (adapter->vf_res->vf_offload_flags &
1463 I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
1464 hena = I40E_DEFAULT_RSS_HENA_EXPANDED;
1465 else
1466 hena = I40E_DEFAULT_RSS_HENA;
e25d00b8
ASJ		 1467 wr32(hw, I40E_VFQF_HENA(0), (u32)hena);
1468 wr32(hw, I40E_VFQF_HENA(1), (u32)(hena >> 32));
1469
2c86ac3c
HZ		 1470 lut = kzalloc(I40EVF_HLUT_ARRAY_SIZE, GFP_KERNEL);
1471 if (!lut)
1472 return -ENOMEM;
66f9af85
HZ		 1473
1474 /* Use user configured lut if there is one, otherwise use default */
1475 if (vsi->rss_lut_user)
1476 memcpy(lut, vsi->rss_lut_user, I40EVF_HLUT_ARRAY_SIZE);
1477 else
1478 i40evf_fill_rss_lut(lut, I40EVF_HLUT_ARRAY_SIZE,
1479 adapter->num_active_queues);
1480
1481 /* Use user configured hash key if there is one, otherwise
1482 * user default.
1483 */
1484 if (vsi->rss_hkey_user)
1485 memcpy(seed, vsi->rss_hkey_user, I40EVF_HKEY_ARRAY_SIZE);
1486 else
1487 netdev_rss_key_fill((void *)seed, I40EVF_HKEY_ARRAY_SIZE);
2c86ac3c
HZ		 1488 ret = i40evf_config_rss(vsi, seed, lut, I40EVF_HLUT_ARRAY_SIZE);
1489 kfree(lut);
1490
1491 return ret;
e25d00b8
ASJ		 1492}
1493
5eae00c5
GR		 1494/**
1495 * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors
1496 * @adapter: board private structure to initialize
1497 *
1498 * We allocate one q_vector per queue interrupt. If allocation fails we
1499 * return -ENOMEM.
1500 **/
1501static int i40evf_alloc_q_vectors(struct i40evf_adapter *adapter)
1502{
7d96ba1a 1503 int q_idx = 0, num_q_vectors;
5eae00c5
GR		 1504 struct i40e_q_vector *q_vector;
1505
1506 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
0dd438d8 1507 adapter->q_vectors = kcalloc(num_q_vectors, sizeof(*q_vector),
7d96ba1a
MW		 1508 GFP_KERNEL);
1509 if (!adapter->q_vectors)
311f23e9 1510 return -ENOMEM;
5eae00c5
GR		 1511
1512 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
7d96ba1a 1513 q_vector = &adapter->q_vectors[q_idx];
5eae00c5
GR		 1514 q_vector->adapter = adapter;
1515 q_vector->vsi = &adapter->vsi;
1516 q_vector->v_idx = q_idx;
1517 netif_napi_add(adapter->netdev, &q_vector->napi,
75a64435 1518 i40evf_napi_poll, NAPI_POLL_WEIGHT);
5eae00c5
GR		 1519 }
1520
1521 return 0;
5eae00c5
GR		 1522}
1523
1524/**
1525 * i40evf_free_q_vectors - Free memory allocated for interrupt vectors
1526 * @adapter: board private structure to initialize
1527 *
1528 * This function frees the memory allocated to the q_vectors. In addition if
1529 * NAPI is enabled it will delete any references to the NAPI struct prior
1530 * to freeing the q_vector.
1531 **/
1532static void i40evf_free_q_vectors(struct i40evf_adapter *adapter)
1533{
1534 int q_idx, num_q_vectors;
1535 int napi_vectors;
1536
1537 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
cc052927 1538 napi_vectors = adapter->num_active_queues;
5eae00c5
GR		 1539
1540 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
7d96ba1a 1541 struct i40e_q_vector *q_vector = &adapter->q_vectors[q_idx];
5eae00c5
GR		 1542 if (q_idx < napi_vectors)
1543 netif_napi_del(&q_vector->napi);
5eae00c5 1544 }
7d96ba1a 1545 kfree(adapter->q_vectors);
5eae00c5
GR		 1546}
1547
1548/**
1549 * i40evf_reset_interrupt_capability - Reset MSIX setup
1550 * @adapter: board private structure
1551 *
1552 **/
1553void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter)
1554{
1555 pci_disable_msix(adapter->pdev);
1556 kfree(adapter->msix_entries);
1557 adapter->msix_entries = NULL;
5eae00c5
GR		 1558}
1559
1560/**
1561 * i40evf_init_interrupt_scheme - Determine if MSIX is supported and init
1562 * @adapter: board private structure to initialize
1563 *
1564 **/
1565int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter)
1566{
1567 int err;
1568
1569 err = i40evf_set_interrupt_capability(adapter);
1570 if (err) {
1571 dev_err(&adapter->pdev->dev,
1572 "Unable to setup interrupt capabilities\n");
1573 goto err_set_interrupt;
1574 }
1575
1576 err = i40evf_alloc_q_vectors(adapter);
1577 if (err) {
1578 dev_err(&adapter->pdev->dev,
1579 "Unable to allocate memory for queue vectors\n");
1580 goto err_alloc_q_vectors;
1581 }
1582
1583 err = i40evf_alloc_queues(adapter);
1584 if (err) {
1585 dev_err(&adapter->pdev->dev,
1586 "Unable to allocate memory for queues\n");
1587 goto err_alloc_queues;
1588 }
1589
1590 dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u",
75a64435
MW		 1591 (adapter->num_active_queues > 1) ? "Enabled" : "Disabled",
1592 adapter->num_active_queues);
5eae00c5
GR		 1593
1594 return 0;
1595err_alloc_queues:
1596 i40evf_free_q_vectors(adapter);
1597err_alloc_q_vectors:
1598 i40evf_reset_interrupt_capability(adapter);
1599err_set_interrupt:
1600 return err;
1601}
1602
66f9af85
HZ		 1603/**
1604 * i40evf_clear_rss_config_user - Clear user configurations of RSS
1605 * @vsi: Pointer to VSI structure
1606 **/
1607static void i40evf_clear_rss_config_user(struct i40e_vsi *vsi)
1608{
1609 if (!vsi)
1610 return;
1611
1612 kfree(vsi->rss_hkey_user);
1613 vsi->rss_hkey_user = NULL;
1614
1615 kfree(vsi->rss_lut_user);
1616 vsi->rss_lut_user = NULL;
1617}
1618
5eae00c5
GR		 1619/**
1620 * i40evf_watchdog_timer - Periodic call-back timer
1621 * @data: pointer to adapter disguised as unsigned long
1622 **/
1623static void i40evf_watchdog_timer(unsigned long data)
1624{
1625 struct i40evf_adapter *adapter = (struct i40evf_adapter *)data;
75a64435 1626
5eae00c5
GR		 1627 schedule_work(&adapter->watchdog_task);
1628 /* timer will be rescheduled in watchdog task */
1629}
1630
1631/**
1632 * i40evf_watchdog_task - Periodic call-back task
1633 * @work: pointer to work_struct
1634 **/
1635static void i40evf_watchdog_task(struct work_struct *work)
1636{
1637 struct i40evf_adapter *adapter = container_of(work,
75a64435
MW		 1638 struct i40evf_adapter,
1639 watchdog_task);
5eae00c5 1640 struct i40e_hw *hw = &adapter->hw;
ee5c1e92 1641 u32 reg_val;
5eae00c5 1642
ef8693eb
MW		 1643 if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section))
1644 goto restart_watchdog;
1645
1646 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) {
ee5c1e92
MW		 1647 reg_val = rd32(hw, I40E_VFGEN_RSTAT) &
1648 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
1649 if ((reg_val == I40E_VFR_VFACTIVE) ||
1650 (reg_val == I40E_VFR_COMPLETED)) {
ef8693eb
MW		 1651 /* A chance for redemption! */
1652 dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n");
1653 adapter->state = __I40EVF_STARTUP;
1654 adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED;
1655 schedule_delayed_work(&adapter->init_task, 10);
1656 clear_bit(__I40EVF_IN_CRITICAL_TASK,
1657 &adapter->crit_section);
1658 /* Don't reschedule the watchdog, since we've restarted
1659 * the init task. When init_task contacts the PF and
1660 * gets everything set up again, it'll restart the
1661 * watchdog for us. Down, boy. Sit. Stay. Woof.
1662 */
1663 return;
1664 }
ef8693eb
MW		 1665 adapter->aq_required = 0;
1666 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
5eae00c5 1667 goto watchdog_done;
ef8693eb 1668 }
5eae00c5 1669
ef8693eb
MW		 1670 if ((adapter->state < __I40EVF_DOWN) ||
1671 (adapter->flags & I40EVF_FLAG_RESET_PENDING))
5eae00c5
GR		 1672 goto watchdog_done;
1673
ef8693eb 1674 /* check for reset */
ee5c1e92
MW		 1675 reg_val = rd32(hw, I40E_VF_ARQLEN1) & I40E_VF_ARQLEN1_ARQENABLE_MASK;
1676 if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) && !reg_val) {
5eae00c5 1677 adapter->state = __I40EVF_RESETTING;
ef8693eb 1678 adapter->flags |= I40EVF_FLAG_RESET_PENDING;
249c8b8d 1679 dev_err(&adapter->pdev->dev, "Hardware reset detected\n");
5eae00c5 1680 schedule_work(&adapter->reset_task);
ef8693eb
MW		 1681 adapter->aq_required = 0;
1682 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
5eae00c5
GR		 1683 goto watchdog_done;
1684 }
1685
1686 /* Process admin queue tasks. After init, everything gets done
1687 * here so we don't race on the admin queue.
1688 */
ed636960 1689 if (adapter->current_op) {
0758e7cb
MW		 1690 if (!i40evf_asq_done(hw)) {
1691 dev_dbg(&adapter->pdev->dev, "Admin queue timeout\n");
1692 i40evf_send_api_ver(adapter);
1693 }
5eae00c5 1694 goto watchdog_done;
0758e7cb 1695 }
e6d038de
MW		 1696 if (adapter->aq_required & I40EVF_FLAG_AQ_GET_CONFIG) {
1697 i40evf_send_vf_config_msg(adapter);
1698 goto watchdog_done;
1699 }
5eae00c5 1700
e284fc88
MW		 1701 if (adapter->aq_required & I40EVF_FLAG_AQ_DISABLE_QUEUES) {
1702 i40evf_disable_queues(adapter);
1703 goto watchdog_done;
1704 }
1705
5eae00c5
GR		 1706 if (adapter->aq_required & I40EVF_FLAG_AQ_MAP_VECTORS) {
1707 i40evf_map_queues(adapter);
1708 goto watchdog_done;
1709 }
1710
1711 if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_MAC_FILTER) {
1712 i40evf_add_ether_addrs(adapter);
1713 goto watchdog_done;
1714 }
1715
1716 if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_VLAN_FILTER) {
1717 i40evf_add_vlans(adapter);
1718 goto watchdog_done;
1719 }
1720
1721 if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_MAC_FILTER) {
1722 i40evf_del_ether_addrs(adapter);
1723 goto watchdog_done;
1724 }
1725
1726 if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_VLAN_FILTER) {
1727 i40evf_del_vlans(adapter);
1728 goto watchdog_done;
1729 }
1730
5eae00c5
GR		 1731 if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_QUEUES) {
1732 i40evf_configure_queues(adapter);
1733 goto watchdog_done;
1734 }
1735
1736 if (adapter->aq_required & I40EVF_FLAG_AQ_ENABLE_QUEUES) {
1737 i40evf_enable_queues(adapter);
1738 goto watchdog_done;
1739 }
1740
e25d00b8
ASJ		 1741 if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_RSS) {
1742 /* This message goes straight to the firmware, not the
1743 * PF, so we don't have to set current_op as we will
1744 * not get a response through the ARQ.
1745 */
96a81986 1746 i40evf_init_rss(adapter);
e25d00b8
ASJ		 1747 adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_RSS;
1748 goto watchdog_done;
1749 }
1750
5eae00c5
GR		 1751 if (adapter->state == __I40EVF_RUNNING)
1752 i40evf_request_stats(adapter);
5eae00c5 1753watchdog_done:
4870e176
MW		 1754 if (adapter->state == __I40EVF_RUNNING) {
1755 i40evf_irq_enable_queues(adapter, ~0);
1756 i40evf_fire_sw_int(adapter, 0xFF);
1757 } else {
1758 i40evf_fire_sw_int(adapter, 0x1);
1759 }
1760
ef8693eb
MW		 1761 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
1762restart_watchdog:
d3e2edb7
AS		 1763 if (adapter->state == __I40EVF_REMOVE)
1764 return;
5eae00c5
GR		 1765 if (adapter->aq_required)
1766 mod_timer(&adapter->watchdog_timer,
1767 jiffies + msecs_to_jiffies(20));
1768 else
1769 mod_timer(&adapter->watchdog_timer, jiffies + (HZ * 2));
5eae00c5
GR		 1770 schedule_work(&adapter->adminq_task);
1771}
1772
67c818a1
MW		 1773#define I40EVF_RESET_WAIT_MS 10
1774#define I40EVF_RESET_WAIT_COUNT 500
5eae00c5
GR		 1775/**
1776 * i40evf_reset_task - Call-back task to handle hardware reset
1777 * @work: pointer to work_struct
1778 *
1779 * During reset we need to shut down and reinitialize the admin queue
1780 * before we can use it to communicate with the PF again. We also clear
1781 * and reinit the rings because that context is lost as well.
1782 **/
1783static void i40evf_reset_task(struct work_struct *work)
1784{
ef8693eb
MW		 1785 struct i40evf_adapter *adapter = container_of(work,
1786 struct i40evf_adapter,
1787 reset_task);
ac833bbf 1788 struct net_device *netdev = adapter->netdev;
5eae00c5 1789 struct i40e_hw *hw = &adapter->hw;
40d01366 1790 struct i40evf_vlan_filter *vlf;
ac833bbf 1791 struct i40evf_mac_filter *f;
ee5c1e92 1792 u32 reg_val;
ac833bbf 1793 int i = 0, err;
5eae00c5
GR		 1794
1795 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
1796 &adapter->crit_section))
f98a2006 1797 usleep_range(500, 1000);
3526d800 1798
67c818a1 1799 i40evf_misc_irq_disable(adapter);
3526d800 1800 if (adapter->flags & I40EVF_FLAG_RESET_NEEDED) {
67c818a1
MW		 1801 adapter->flags &= ~I40EVF_FLAG_RESET_NEEDED;
1802 /* Restart the AQ here. If we have been reset but didn't
1803 * detect it, or if the PF had to reinit, our AQ will be hosed.
1804 */
1805 i40evf_shutdown_adminq(hw);
1806 i40evf_init_adminq(hw);
3526d800
MW		 1807 i40evf_request_reset(adapter);
1808 }
67c818a1 1809 adapter->flags |= I40EVF_FLAG_RESET_PENDING;
3526d800 1810
ef8693eb
MW		 1811 /* poll until we see the reset actually happen */
1812 for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) {
ee5c1e92
MW		 1813 reg_val = rd32(hw, I40E_VF_ARQLEN1) &
1814 I40E_VF_ARQLEN1_ARQENABLE_MASK;
1815 if (!reg_val)
ef8693eb 1816 break;
ee5c1e92 1817 usleep_range(5000, 10000);
ef8693eb
MW		 1818 }
1819 if (i == I40EVF_RESET_WAIT_COUNT) {
67c818a1 1820 dev_info(&adapter->pdev->dev, "Never saw reset\n");
ef8693eb
MW		 1821 goto continue_reset; /* act like the reset happened */
1822 }
5eae00c5 1823
ef8693eb
MW		 1824 /* wait until the reset is complete and the PF is responding to us */
1825 for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) {
ee5c1e92
MW		 1826 reg_val = rd32(hw, I40E_VFGEN_RSTAT) &
1827 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
1828 if (reg_val == I40E_VFR_VFACTIVE)
5eae00c5 1829 break;
c88e38cc 1830 msleep(I40EVF_RESET_WAIT_MS);
5eae00c5 1831 }
509a447a 1832 pci_set_master(adapter->pdev);
67c818a1
MW		 1833 /* extra wait to make sure minimum wait is met */
1834 msleep(I40EVF_RESET_WAIT_MS);
ef8693eb 1835 if (i == I40EVF_RESET_WAIT_COUNT) {
874d1a10 1836 struct i40evf_mac_filter *ftmp;
6ba36a24
MW		 1837 struct i40evf_vlan_filter *fv, *fvtmp;
1838
5eae00c5 1839 /* reset never finished */
80e72893 1840 dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n",
ee5c1e92 1841 reg_val);
ef8693eb
MW		 1842 adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED;
1843
169f4076
MW		 1844 if (netif_running(adapter->netdev)) {
1845 set_bit(__I40E_DOWN, &adapter->vsi.state);
ac833bbf 1846 netif_carrier_off(netdev);
67c818a1
MW		 1847 netif_tx_disable(netdev);
1848 i40evf_napi_disable_all(adapter);
1849 i40evf_irq_disable(adapter);
169f4076
MW		 1850 i40evf_free_traffic_irqs(adapter);
1851 i40evf_free_all_tx_resources(adapter);
1852 i40evf_free_all_rx_resources(adapter);
1853 }
6ba36a24
MW		 1854
1855 /* Delete all of the filters, both MAC and VLAN. */
1856 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list,
1857 list) {
1858 list_del(&f->list);
1859 kfree(f);
1860 }
67c818a1 1861
6ba36a24
MW		 1862 list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list,
1863 list) {
1864 list_del(&fv->list);
1865 kfree(fv);
1866 }
1867
ef8693eb
MW		 1868 i40evf_free_misc_irq(adapter);
1869 i40evf_reset_interrupt_capability(adapter);
1870 i40evf_free_queues(adapter);
d31944d6 1871 i40evf_free_q_vectors(adapter);
ef8693eb
MW		 1872 kfree(adapter->vf_res);
1873 i40evf_shutdown_adminq(hw);
1874 adapter->netdev->flags &= ~IFF_UP;
1875 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
67c818a1 1876 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
9b9344f7 1877 adapter->state = __I40EVF_DOWN;
67c818a1 1878 dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n");
ef8693eb 1879 return; /* Do not attempt to reinit. It's dead, Jim. */
5eae00c5 1880 }
ef8693eb
MW		 1881
1882continue_reset:
3c8e0b98 1883 if (netif_running(adapter->netdev)) {
3c8e0b98 1884 netif_carrier_off(netdev);
67c818a1
MW		 1885 netif_tx_stop_all_queues(netdev);
1886 i40evf_napi_disable_all(adapter);
3c8e0b98 1887 }
67c818a1 1888 i40evf_irq_disable(adapter);
ac833bbf 1889
5eae00c5 1890 adapter->state = __I40EVF_RESETTING;
67c818a1
MW		 1891 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
1892
1893 /* free the Tx/Rx rings and descriptors, might be better to just
1894 * re-use them sometime in the future
1895 */
1896 i40evf_free_all_rx_resources(adapter);
1897 i40evf_free_all_tx_resources(adapter);
5eae00c5
GR		 1898
1899 /* kill and reinit the admin queue */
1900 if (i40evf_shutdown_adminq(hw))
ac833bbf
MW		 1901 dev_warn(&adapter->pdev->dev, "Failed to shut down adminq\n");
1902 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
5eae00c5
GR		 1903 err = i40evf_init_adminq(hw);
1904 if (err)
ac833bbf
MW		 1905 dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n",
1906 err);
5eae00c5 1907
e6d038de
MW		 1908 adapter->aq_required = I40EVF_FLAG_AQ_GET_CONFIG;
1909 adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS;
ac833bbf
MW		 1910
1911 /* re-add all MAC filters */
1912 list_for_each_entry(f, &adapter->mac_filter_list, list) {
1913 f->add = true;
1914 }
1915 /* re-add all VLAN filters */
40d01366
MW		 1916 list_for_each_entry(vlf, &adapter->vlan_filter_list, list) {
1917 vlf->add = true;
ac833bbf 1918 }
e6d038de 1919 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
ac833bbf 1920 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
5eae00c5 1921 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
67c818a1 1922 i40evf_misc_irq_enable(adapter);
5eae00c5
GR		 1923
1924 mod_timer(&adapter->watchdog_timer, jiffies + 2);
1925
1926 if (netif_running(adapter->netdev)) {
1927 /* allocate transmit descriptors */
1928 err = i40evf_setup_all_tx_resources(adapter);
1929 if (err)
1930 goto reset_err;
1931
1932 /* allocate receive descriptors */
1933 err = i40evf_setup_all_rx_resources(adapter);
1934 if (err)
1935 goto reset_err;
1936
1937 i40evf_configure(adapter);
1938
1939 err = i40evf_up_complete(adapter);
1940 if (err)
1941 goto reset_err;
1942
1943 i40evf_irq_enable(adapter, true);
67c818a1
MW		 1944 } else {
1945 adapter->state = __I40EVF_DOWN;
5eae00c5 1946 }
67c818a1 1947
5eae00c5
GR		 1948 return;
1949reset_err:
80e72893 1950 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n");
5eae00c5
GR		 1951 i40evf_close(adapter->netdev);
1952}
1953
1954/**
1955 * i40evf_adminq_task - worker thread to clean the admin queue
1956 * @work: pointer to work_struct containing our data
1957 **/
1958static void i40evf_adminq_task(struct work_struct *work)
1959{
1960 struct i40evf_adapter *adapter =
1961 container_of(work, struct i40evf_adapter, adminq_task);
1962 struct i40e_hw *hw = &adapter->hw;
1963 struct i40e_arq_event_info event;
1964 struct i40e_virtchnl_msg *v_msg;
1965 i40e_status ret;
912257e5 1966 u32 val, oldval;
5eae00c5
GR		 1967 u16 pending;
1968
ef8693eb 1969 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED)
7235448c 1970 goto out;
ef8693eb 1971
1001dc37
MW		 1972 event.buf_len = I40EVF_MAX_AQ_BUF_SIZE;
1973 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
249c8b8d 1974 if (!event.msg_buf)
7235448c 1975 goto out;
249c8b8d 1976
5eae00c5
GR		 1977 v_msg = (struct i40e_virtchnl_msg *)&event.desc;
1978 do {
1979 ret = i40evf_clean_arq_element(hw, &event, &pending);
8b011ebb 1980 if (ret || !v_msg->v_opcode)
5eae00c5
GR		 1981 break; /* No event to process or error cleaning ARQ */
1982
1983 i40evf_virtchnl_completion(adapter, v_msg->v_opcode,
1984 v_msg->v_retval, event.msg_buf,
1001dc37 1985 event.msg_len);
75a64435 1986 if (pending != 0)
5eae00c5 1987 memset(event.msg_buf, 0, I40EVF_MAX_AQ_BUF_SIZE);
5eae00c5
GR		 1988 } while (pending);
1989
67c818a1
MW		 1990 if ((adapter->flags &
1991 (I40EVF_FLAG_RESET_PENDING | I40EVF_FLAG_RESET_NEEDED)) ||
1992 adapter->state == __I40EVF_RESETTING)
1993 goto freedom;
1994
912257e5
MW		 1995 /* check for error indications */
1996 val = rd32(hw, hw->aq.arq.len);
1997 oldval = val;
b1f3366b 1998 if (val & I40E_VF_ARQLEN1_ARQVFE_MASK) {
912257e5 1999 dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n");
b1f3366b 2000 val &= ~I40E_VF_ARQLEN1_ARQVFE_MASK;
912257e5 2001 }
b1f3366b 2002 if (val & I40E_VF_ARQLEN1_ARQOVFL_MASK) {
912257e5 2003 dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n");
b1f3366b 2004 val &= ~I40E_VF_ARQLEN1_ARQOVFL_MASK;
912257e5 2005 }
b1f3366b 2006 if (val & I40E_VF_ARQLEN1_ARQCRIT_MASK) {
912257e5 2007 dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n");
b1f3366b 2008 val &= ~I40E_VF_ARQLEN1_ARQCRIT_MASK;
912257e5
MW		 2009 }
2010 if (oldval != val)
2011 wr32(hw, hw->aq.arq.len, val);
2012
2013 val = rd32(hw, hw->aq.asq.len);
2014 oldval = val;
b1f3366b 2015 if (val & I40E_VF_ATQLEN1_ATQVFE_MASK) {
912257e5 2016 dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n");
b1f3366b 2017 val &= ~I40E_VF_ATQLEN1_ATQVFE_MASK;
912257e5 2018 }
b1f3366b 2019 if (val & I40E_VF_ATQLEN1_ATQOVFL_MASK) {
912257e5 2020 dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n");
b1f3366b 2021 val &= ~I40E_VF_ATQLEN1_ATQOVFL_MASK;
912257e5 2022 }
b1f3366b 2023 if (val & I40E_VF_ATQLEN1_ATQCRIT_MASK) {
912257e5 2024 dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n");
b1f3366b 2025 val &= ~I40E_VF_ATQLEN1_ATQCRIT_MASK;
912257e5
MW		 2026 }
2027 if (oldval != val)
2028 wr32(hw, hw->aq.asq.len, val);
2029
67c818a1 2030freedom:
7235448c
MW		 2031 kfree(event.msg_buf);
2032out:
5eae00c5
GR		 2033 /* re-enable Admin queue interrupt cause */
2034 i40evf_misc_irq_enable(adapter);
5eae00c5
GR		 2035}
2036
2037/**
2038 * i40evf_free_all_tx_resources - Free Tx Resources for All Queues
2039 * @adapter: board private structure
2040 *
2041 * Free all transmit software resources
2042 **/
e284fc88 2043void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter)
5eae00c5
GR		 2044{
2045 int i;
2046
fdb47ae8
MW		 2047 if (!adapter->tx_rings)
2048 return;
2049
cc052927 2050 for (i = 0; i < adapter->num_active_queues; i++)
0dd438d8
MW		 2051 if (adapter->tx_rings[i].desc)
2052 i40evf_free_tx_resources(&adapter->tx_rings[i]);
5eae00c5
GR		 2053}
2054
2055/**
2056 * i40evf_setup_all_tx_resources - allocate all queues Tx resources
2057 * @adapter: board private structure
2058 *
2059 * If this function returns with an error, then it's possible one or
2060 * more of the rings is populated (while the rest are not). It is the
2061 * callers duty to clean those orphaned rings.
2062 *
2063 * Return 0 on success, negative on failure
2064 **/
2065static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter)
2066{
2067 int i, err = 0;
2068
cc052927 2069 for (i = 0; i < adapter->num_active_queues; i++) {
0dd438d8
MW		 2070 adapter->tx_rings[i].count = adapter->tx_desc_count;
2071 err = i40evf_setup_tx_descriptors(&adapter->tx_rings[i]);
5eae00c5
GR		 2072 if (!err)
2073 continue;
2074 dev_err(&adapter->pdev->dev,
fb43201f 2075 "Allocation for Tx Queue %u failed\n", i);
5eae00c5
GR		 2076 break;
2077 }
2078
2079 return err;
2080}
2081
2082/**
2083 * i40evf_setup_all_rx_resources - allocate all queues Rx resources
2084 * @adapter: board private structure
2085 *
2086 * If this function returns with an error, then it's possible one or
2087 * more of the rings is populated (while the rest are not). It is the
2088 * callers duty to clean those orphaned rings.
2089 *
2090 * Return 0 on success, negative on failure
2091 **/
2092static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter)
2093{
2094 int i, err = 0;
2095
cc052927 2096 for (i = 0; i < adapter->num_active_queues; i++) {
0dd438d8
MW		 2097 adapter->rx_rings[i].count = adapter->rx_desc_count;
2098 err = i40evf_setup_rx_descriptors(&adapter->rx_rings[i]);
5eae00c5
GR		 2099 if (!err)
2100 continue;
2101 dev_err(&adapter->pdev->dev,
fb43201f 2102 "Allocation for Rx Queue %u failed\n", i);
5eae00c5
GR		 2103 break;
2104 }
2105 return err;
2106}
2107
2108/**
2109 * i40evf_free_all_rx_resources - Free Rx Resources for All Queues
2110 * @adapter: board private structure
2111 *
2112 * Free all receive software resources
2113 **/
e284fc88 2114void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter)
5eae00c5
GR		 2115{
2116 int i;
2117
fdb47ae8
MW		 2118 if (!adapter->rx_rings)
2119 return;
2120
cc052927 2121 for (i = 0; i < adapter->num_active_queues; i++)
0dd438d8
MW		 2122 if (adapter->rx_rings[i].desc)
2123 i40evf_free_rx_resources(&adapter->rx_rings[i]);
5eae00c5
GR		 2124}
2125
2126/**
2127 * i40evf_open - Called when a network interface is made active
2128 * @netdev: network interface device structure
2129 *
2130 * Returns 0 on success, negative value on failure
2131 *
2132 * The open entry point is called when a network interface is made
2133 * active by the system (IFF_UP). At this point all resources needed
2134 * for transmit and receive operations are allocated, the interrupt
2135 * handler is registered with the OS, the watchdog timer is started,
2136 * and the stack is notified that the interface is ready.
2137 **/
2138static int i40evf_open(struct net_device *netdev)
2139{
2140 struct i40evf_adapter *adapter = netdev_priv(netdev);
2141 int err;
2142
ef8693eb
MW		 2143 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) {
2144 dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n");
2145 return -EIO;
2146 }
209dc4da
MW		 2147
2148 if (adapter->state != __I40EVF_DOWN)
5eae00c5
GR		 2149 return -EBUSY;
2150
2151 /* allocate transmit descriptors */
2152 err = i40evf_setup_all_tx_resources(adapter);
2153 if (err)
2154 goto err_setup_tx;
2155
2156 /* allocate receive descriptors */
2157 err = i40evf_setup_all_rx_resources(adapter);
2158 if (err)
2159 goto err_setup_rx;
2160
2161 /* clear any pending interrupts, may auto mask */
2162 err = i40evf_request_traffic_irqs(adapter, netdev->name);
2163 if (err)
2164 goto err_req_irq;
2165
44151cd3 2166 i40evf_add_filter(adapter, adapter->hw.mac.addr);
5eae00c5
GR		 2167 i40evf_configure(adapter);
2168
2169 err = i40evf_up_complete(adapter);
2170 if (err)
2171 goto err_req_irq;
2172
2173 i40evf_irq_enable(adapter, true);
2174
2175 return 0;
2176
2177err_req_irq:
2178 i40evf_down(adapter);
2179 i40evf_free_traffic_irqs(adapter);
2180err_setup_rx:
2181 i40evf_free_all_rx_resources(adapter);
2182err_setup_tx:
2183 i40evf_free_all_tx_resources(adapter);
2184
2185 return err;
2186}
2187
2188/**
2189 * i40evf_close - Disables a network interface
2190 * @netdev: network interface device structure
2191 *
2192 * Returns 0, this is not allowed to fail
2193 *
2194 * The close entry point is called when an interface is de-activated
2195 * by the OS. The hardware is still under the drivers control, but
2196 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue)
2197 * are freed, along with all transmit and receive resources.
2198 **/
2199static int i40evf_close(struct net_device *netdev)
2200{
2201 struct i40evf_adapter *adapter = netdev_priv(netdev);
2202
209dc4da 2203 if (adapter->state <= __I40EVF_DOWN_PENDING)
ef8693eb
MW		 2204 return 0;
2205
ef8693eb 2206
5eae00c5
GR		 2207 set_bit(__I40E_DOWN, &adapter->vsi.state);
2208
2209 i40evf_down(adapter);
209dc4da 2210 adapter->state = __I40EVF_DOWN_PENDING;
5eae00c5
GR		 2211 i40evf_free_traffic_irqs(adapter);
2212
5eae00c5
GR		 2213 return 0;
2214}
2215
2216/**
2217 * i40evf_get_stats - Get System Network Statistics
2218 * @netdev: network interface device structure
2219 *
2220 * Returns the address of the device statistics structure.
2221 * The statistics are actually updated from the timer callback.
2222 **/
2223static struct net_device_stats *i40evf_get_stats(struct net_device *netdev)
2224{
2225 struct i40evf_adapter *adapter = netdev_priv(netdev);
2226
2227 /* only return the current stats */
2228 return &adapter->net_stats;
2229}
2230
5eae00c5
GR		 2231/**
2232 * i40evf_change_mtu - Change the Maximum Transfer Unit
2233 * @netdev: network interface device structure
2234 * @new_mtu: new value for maximum frame size
2235 *
2236 * Returns 0 on success, negative on failure
2237 **/
2238static int i40evf_change_mtu(struct net_device *netdev, int new_mtu)
2239{
2240 struct i40evf_adapter *adapter = netdev_priv(netdev);
2241 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
2242
2243 if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2244 return -EINVAL;
2245
5eae00c5 2246 netdev->mtu = new_mtu;
67c818a1
MW		 2247 adapter->flags |= I40EVF_FLAG_RESET_NEEDED;
2248 schedule_work(&adapter->reset_task);
2249
5eae00c5
GR		 2250 return 0;
2251}
2252
2253static const struct net_device_ops i40evf_netdev_ops = {
2254 .ndo_open = i40evf_open,
2255 .ndo_stop = i40evf_close,
2256 .ndo_start_xmit = i40evf_xmit_frame,
2257 .ndo_get_stats = i40evf_get_stats,
2258 .ndo_set_rx_mode = i40evf_set_rx_mode,
2259 .ndo_validate_addr = eth_validate_addr,
2260 .ndo_set_mac_address = i40evf_set_mac,
2261 .ndo_change_mtu = i40evf_change_mtu,
2262 .ndo_tx_timeout = i40evf_tx_timeout,
2263 .ndo_vlan_rx_add_vid = i40evf_vlan_rx_add_vid,
2264 .ndo_vlan_rx_kill_vid = i40evf_vlan_rx_kill_vid,
7709b4c1
AD		 2265#ifdef CONFIG_NET_POLL_CONTROLLER
2266 .ndo_poll_controller = i40evf_netpoll,
2267#endif
5eae00c5
GR		 2268};
2269
2270/**
2271 * i40evf_check_reset_complete - check that VF reset is complete
2272 * @hw: pointer to hw struct
2273 *
2274 * Returns 0 if device is ready to use, or -EBUSY if it's in reset.
2275 **/
2276static int i40evf_check_reset_complete(struct i40e_hw *hw)
2277{
2278 u32 rstat;
2279 int i;
2280
2281 for (i = 0; i < 100; i++) {
fd35886a
AS		 2282 rstat = rd32(hw, I40E_VFGEN_RSTAT) &
2283 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
2284 if ((rstat == I40E_VFR_VFACTIVE) ||
2285 (rstat == I40E_VFR_COMPLETED))
5eae00c5 2286 return 0;
f98a2006 2287 usleep_range(10, 20);
5eae00c5
GR		 2288 }
2289 return -EBUSY;
2290}
2291
e6d038de
MW		 2292/**
2293 * i40evf_process_config - Process the config information we got from the PF
2294 * @adapter: board private structure
2295 *
2296 * Verify that we have a valid config struct, and set up our netdev features
2297 * and our VSI struct.
2298 **/
2299int i40evf_process_config(struct i40evf_adapter *adapter)
2300{
2301 struct net_device *netdev = adapter->netdev;
2302 int i;
2303
2304 /* got VF config message back from PF, now we can parse it */
2305 for (i = 0; i < adapter->vf_res->num_vsis; i++) {
2306 if (adapter->vf_res->vsi_res[i].vsi_type == I40E_VSI_SRIOV)
2307 adapter->vsi_res = &adapter->vf_res->vsi_res[i];
2308 }
2309 if (!adapter->vsi_res) {
2310 dev_err(&adapter->pdev->dev, "No LAN VSI found\n");
2311 return -ENODEV;
2312 }
2313
2314 if (adapter->vf_res->vf_offload_flags
2315 & I40E_VIRTCHNL_VF_OFFLOAD_VLAN) {
cc7e406c
MW		 2316 netdev->vlan_features = netdev->features &
2317 ~(NETIF_F_HW_VLAN_CTAG_TX |
2318 NETIF_F_HW_VLAN_CTAG_RX |
2319 NETIF_F_HW_VLAN_CTAG_FILTER);
e6d038de
MW		 2320 netdev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2321 NETIF_F_HW_VLAN_CTAG_RX |
2322 NETIF_F_HW_VLAN_CTAG_FILTER;
2323 }
2324 netdev->features |= NETIF_F_HIGHDMA |
2325 NETIF_F_SG |
2326 NETIF_F_IP_CSUM |
53692b1d 2327 NETIF_F_SCTP_CRC |
e6d038de
MW		 2328 NETIF_F_IPV6_CSUM |
2329 NETIF_F_TSO |
2330 NETIF_F_TSO6 |
f608e6a6
AD		 2331 NETIF_F_TSO_ECN |
2332 NETIF_F_GSO_GRE |
2333 NETIF_F_GSO_UDP_TUNNEL |
e6d038de
MW		 2334 NETIF_F_RXCSUM |
2335 NETIF_F_GRO;
2336
f608e6a6
AD		 2337 netdev->hw_enc_features |= NETIF_F_IP_CSUM |
2338 NETIF_F_IPV6_CSUM |
2339 NETIF_F_TSO |
2340 NETIF_F_TSO6 |
2341 NETIF_F_TSO_ECN |
2342 NETIF_F_GSO_GRE |
2343 NETIF_F_GSO_UDP_TUNNEL |
2344 NETIF_F_GSO_UDP_TUNNEL_CSUM;
2345
2346 if (adapter->flags & I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE)
2347 netdev->features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
2348
e6d038de
MW		 2349 /* copy netdev features into list of user selectable features */
2350 netdev->hw_features |= netdev->features;
2351 netdev->hw_features &= ~NETIF_F_RXCSUM;
2352
2353 adapter->vsi.id = adapter->vsi_res->vsi_id;
2354
2355 adapter->vsi.back = adapter;
2356 adapter->vsi.base_vector = 1;
2357 adapter->vsi.work_limit = I40E_DEFAULT_IRQ_WORK;
2358 adapter->vsi.rx_itr_setting = (I40E_ITR_DYNAMIC |
2359 ITR_REG_TO_USEC(I40E_ITR_RX_DEF));
2360 adapter->vsi.tx_itr_setting = (I40E_ITR_DYNAMIC |
2361 ITR_REG_TO_USEC(I40E_ITR_TX_DEF));
2362 adapter->vsi.netdev = adapter->netdev;
f578f5f4 2363 adapter->vsi.qs_handle = adapter->vsi_res->qset_handle;
e6d038de
MW		 2364 return 0;
2365}
2366
5eae00c5
GR		 2367/**
2368 * i40evf_init_task - worker thread to perform delayed initialization
2369 * @work: pointer to work_struct containing our data
2370 *
2371 * This task completes the work that was begun in probe. Due to the nature
2372 * of VF-PF communications, we may need to wait tens of milliseconds to get
dbedd44e 2373 * responses back from the PF. Rather than busy-wait in probe and bog down the
5eae00c5
GR		 2374 * whole system, we'll do it in a task so we can sleep.
2375 * This task only runs during driver init. Once we've established
2376 * communications with the PF driver and set up our netdev, the watchdog
2377 * takes over.
2378 **/
2379static void i40evf_init_task(struct work_struct *work)
2380{
2381 struct i40evf_adapter *adapter = container_of(work,
2382 struct i40evf_adapter,
2383 init_task.work);
2384 struct net_device *netdev = adapter->netdev;
5eae00c5
GR		 2385 struct i40e_hw *hw = &adapter->hw;
2386 struct pci_dev *pdev = adapter->pdev;
e6d038de 2387 int err, bufsz;
5eae00c5
GR		 2388
2389 switch (adapter->state) {
2390 case __I40EVF_STARTUP:
2391 /* driver loaded, probe complete */
ef8693eb
MW		 2392 adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED;
2393 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
5eae00c5
GR		 2394 err = i40e_set_mac_type(hw);
2395 if (err) {
c2a137cb
MW		 2396 dev_err(&pdev->dev, "Failed to set MAC type (%d)\n",
2397 err);
2619ef47 2398 goto err;
5eae00c5
GR		 2399 }
2400 err = i40evf_check_reset_complete(hw);
2401 if (err) {
0d9c7ea8 2402 dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n",
75a64435 2403 err);
5eae00c5
GR		 2404 goto err;
2405 }
2406 hw->aq.num_arq_entries = I40EVF_AQ_LEN;
2407 hw->aq.num_asq_entries = I40EVF_AQ_LEN;
2408 hw->aq.arq_buf_size = I40EVF_MAX_AQ_BUF_SIZE;
2409 hw->aq.asq_buf_size = I40EVF_MAX_AQ_BUF_SIZE;
2410
2411 err = i40evf_init_adminq(hw);
2412 if (err) {
c2a137cb
MW		 2413 dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n",
2414 err);
5eae00c5
GR		 2415 goto err;
2416 }
2417 err = i40evf_send_api_ver(adapter);
2418 if (err) {
10bdd67b 2419 dev_err(&pdev->dev, "Unable to send to PF (%d)\n", err);
5eae00c5
GR		 2420 i40evf_shutdown_adminq(hw);
2421 goto err;
2422 }
2423 adapter->state = __I40EVF_INIT_VERSION_CHECK;
2424 goto restart;
5eae00c5 2425 case __I40EVF_INIT_VERSION_CHECK:
10bdd67b 2426 if (!i40evf_asq_done(hw)) {
80e72893 2427 dev_err(&pdev->dev, "Admin queue command never completed\n");
906a6937
MW		 2428 i40evf_shutdown_adminq(hw);
2429 adapter->state = __I40EVF_STARTUP;
5eae00c5 2430 goto err;
10bdd67b 2431 }
5eae00c5
GR		 2432
2433 /* aq msg sent, awaiting reply */
2434 err = i40evf_verify_api_ver(adapter);
2435 if (err) {
d4f82fd3 2436 if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK)
56f9920a 2437 err = i40evf_send_api_ver(adapter);
ee1693e5
MW		 2438 else
2439 dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n",
2440 adapter->pf_version.major,
2441 adapter->pf_version.minor,
2442 I40E_VIRTCHNL_VERSION_MAJOR,
2443 I40E_VIRTCHNL_VERSION_MINOR);
5eae00c5
GR		 2444 goto err;
2445 }
2446 err = i40evf_send_vf_config_msg(adapter);
2447 if (err) {
3f2ab172 2448 dev_err(&pdev->dev, "Unable to send config request (%d)\n",
5eae00c5
GR		 2449 err);
2450 goto err;
2451 }
2452 adapter->state = __I40EVF_INIT_GET_RESOURCES;
2453 goto restart;
5eae00c5
GR		 2454 case __I40EVF_INIT_GET_RESOURCES:
2455 /* aq msg sent, awaiting reply */
2456 if (!adapter->vf_res) {
2457 bufsz = sizeof(struct i40e_virtchnl_vf_resource) +
2458 (I40E_MAX_VF_VSI *
2459 sizeof(struct i40e_virtchnl_vsi_resource));
2460 adapter->vf_res = kzalloc(bufsz, GFP_KERNEL);
c2a137cb 2461 if (!adapter->vf_res)
5eae00c5 2462 goto err;
5eae00c5
GR		 2463 }
2464 err = i40evf_get_vf_config(adapter);
906a6937 2465 if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
906a6937
MW		 2466 err = i40evf_send_vf_config_msg(adapter);
2467 goto err;
e743072f
MW		 2468 } else if (err == I40E_ERR_PARAM) {
2469 /* We only get ERR_PARAM if the device is in a very bad
2470 * state or if we've been disabled for previous bad
2471 * behavior. Either way, we're done now.
2472 */
2473 i40evf_shutdown_adminq(hw);
2474 dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n");
2475 return;
906a6937 2476 }
5eae00c5 2477 if (err) {
c2a137cb
MW		 2478 dev_err(&pdev->dev, "Unable to get VF config (%d)\n",
2479 err);
5eae00c5
GR		 2480 goto err_alloc;
2481 }
2482 adapter->state = __I40EVF_INIT_SW;
2483 break;
2484 default:
2485 goto err_alloc;
2486 }
f608e6a6
AD		 2487
2488 if (hw->mac.type == I40E_MAC_X722_VF)
2489 adapter->flags |= I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE;
2490
e6d038de 2491 if (i40evf_process_config(adapter))
5eae00c5 2492 goto err_alloc;
e6d038de 2493 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
5eae00c5
GR		 2494
2495 adapter->flags |= I40EVF_FLAG_RX_CSUM_ENABLED;
00e5ec4b
MW		 2496 adapter->flags |= I40EVF_FLAG_RX_1BUF_CAPABLE;
2497 adapter->flags |= I40EVF_FLAG_RX_PS_CAPABLE;
2498
2499 /* Default to single buffer rx, can be changed through ethtool. */
2500 adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED;
5eae00c5 2501
5eae00c5
GR		 2502 netdev->netdev_ops = &i40evf_netdev_ops;
2503 i40evf_set_ethtool_ops(netdev);
2504 netdev->watchdog_timeo = 5 * HZ;
3415e8ce 2505
5eae00c5 2506 if (!is_valid_ether_addr(adapter->hw.mac.addr)) {
b34f90e7 2507 dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n",
c2a137cb 2508 adapter->hw.mac.addr);
14e52ee2
MW		 2509 eth_hw_addr_random(netdev);
2510 ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr);
2511 } else {
2512 adapter->flags |= I40EVF_FLAG_ADDR_SET_BY_PF;
2513 ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr);
2514 ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr);
5eae00c5 2515 }
5eae00c5 2516
5eae00c5
GR		 2517 init_timer(&adapter->watchdog_timer);
2518 adapter->watchdog_timer.function = &i40evf_watchdog_timer;
2519 adapter->watchdog_timer.data = (unsigned long)adapter;
2520 mod_timer(&adapter->watchdog_timer, jiffies + 1);
2521
cc052927
MW		 2522 adapter->num_active_queues = min_t(int,
2523 adapter->vsi_res->num_queue_pairs,
2524 (int)(num_online_cpus()));
d732a184
MW		 2525 adapter->tx_desc_count = I40EVF_DEFAULT_TXD;
2526 adapter->rx_desc_count = I40EVF_DEFAULT_RXD;
5eae00c5
GR		 2527 err = i40evf_init_interrupt_scheme(adapter);
2528 if (err)
2529 goto err_sw_init;
2530 i40evf_map_rings_to_vectors(adapter);
f6d83d13
ASJ		 2531 if (adapter->vf_res->vf_offload_flags &
2532 I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2533 adapter->flags |= I40EVF_FLAG_WB_ON_ITR_CAPABLE;
2534
5eae00c5
GR		 2535 err = i40evf_request_misc_irq(adapter);
2536 if (err)
2537 goto err_sw_init;
2538
2539 netif_carrier_off(netdev);
2540
ef8693eb
MW		 2541 if (!adapter->netdev_registered) {
2542 err = register_netdev(netdev);
2543 if (err)
2544 goto err_register;
2545 }
5eae00c5
GR		 2546
2547 adapter->netdev_registered = true;
2548
2549 netif_tx_stop_all_queues(netdev);
2550
b34f90e7 2551 dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr);
5eae00c5
GR		 2552 if (netdev->features & NETIF_F_GRO)
2553 dev_info(&pdev->dev, "GRO is enabled\n");
2554
5eae00c5
GR		 2555 adapter->state = __I40EVF_DOWN;
2556 set_bit(__I40E_DOWN, &adapter->vsi.state);
2557 i40evf_misc_irq_enable(adapter);
e25d00b8
ASJ		 2558
2559 if (RSS_AQ(adapter)) {
2560 adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_RSS;
2561 mod_timer_pending(&adapter->watchdog_timer, jiffies + 1);
2562 } else {
96a81986 2563 i40evf_init_rss(adapter);
e25d00b8 2564 }
5eae00c5
GR		 2565 return;
2566restart:
3f7e5c33 2567 schedule_delayed_work(&adapter->init_task, msecs_to_jiffies(30));
5eae00c5
GR		 2568 return;
2569
2570err_register:
2571 i40evf_free_misc_irq(adapter);
2572err_sw_init:
2573 i40evf_reset_interrupt_capability(adapter);
5eae00c5
GR		 2574err_alloc:
2575 kfree(adapter->vf_res);
2576 adapter->vf_res = NULL;
2577err:
2578 /* Things went into the weeds, so try again later */
2579 if (++adapter->aq_wait_count > I40EVF_AQ_MAX_ERR) {
b9029e94 2580 dev_err(&pdev->dev, "Failed to communicate with PF; waiting before retry\n");
ef8693eb 2581 adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED;
b9029e94
MW		 2582 i40evf_shutdown_adminq(hw);
2583 adapter->state = __I40EVF_STARTUP;
2584 schedule_delayed_work(&adapter->init_task, HZ * 5);
2585 return;
5eae00c5 2586 }
3f7e5c33 2587 schedule_delayed_work(&adapter->init_task, HZ);
5eae00c5
GR		 2588}
2589
2590/**
2591 * i40evf_shutdown - Shutdown the device in preparation for a reboot
2592 * @pdev: pci device structure
2593 **/
2594static void i40evf_shutdown(struct pci_dev *pdev)
2595{
2596 struct net_device *netdev = pci_get_drvdata(pdev);
00293fdc 2597 struct i40evf_adapter *adapter = netdev_priv(netdev);
5eae00c5
GR		 2598
2599 netif_device_detach(netdev);
2600
2601 if (netif_running(netdev))
2602 i40evf_close(netdev);
2603
00293fdc
MW		 2604 /* Prevent the watchdog from running. */
2605 adapter->state = __I40EVF_REMOVE;
2606 adapter->aq_required = 0;
00293fdc 2607
5eae00c5
GR		 2608#ifdef CONFIG_PM
2609 pci_save_state(pdev);
2610
2611#endif
2612 pci_disable_device(pdev);
2613}
2614
2615/**
2616 * i40evf_probe - Device Initialization Routine
2617 * @pdev: PCI device information struct
2618 * @ent: entry in i40evf_pci_tbl
2619 *
2620 * Returns 0 on success, negative on failure
2621 *
2622 * i40evf_probe initializes an adapter identified by a pci_dev structure.
2623 * The OS initialization, configuring of the adapter private structure,
2624 * and a hardware reset occur.
2625 **/
2626static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2627{
2628 struct net_device *netdev;
2629 struct i40evf_adapter *adapter = NULL;
2630 struct i40e_hw *hw = NULL;
dbbd8111 2631 int err;
5eae00c5
GR		 2632
2633 err = pci_enable_device(pdev);
2634 if (err)
2635 return err;
2636
6494294f 2637 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
6494294f 2638 if (err) {
e3e3bfdd
JS		 2639 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
2640 if (err) {
2641 dev_err(&pdev->dev,
2642 "DMA configuration failed: 0x%x\n", err);
2643 goto err_dma;
2644 }
5eae00c5
GR		 2645 }
2646
2647 err = pci_request_regions(pdev, i40evf_driver_name);
2648 if (err) {
2649 dev_err(&pdev->dev,
2650 "pci_request_regions failed 0x%x\n", err);
2651 goto err_pci_reg;
2652 }
2653
2654 pci_enable_pcie_error_reporting(pdev);
2655
2656 pci_set_master(pdev);
2657
1255b7a1 2658 netdev = alloc_etherdev_mq(sizeof(struct i40evf_adapter), MAX_QUEUES);
5eae00c5
GR		 2659 if (!netdev) {
2660 err = -ENOMEM;
2661 goto err_alloc_etherdev;
2662 }
2663
2664 SET_NETDEV_DEV(netdev, &pdev->dev);
2665
2666 pci_set_drvdata(pdev, netdev);
2667 adapter = netdev_priv(netdev);
5eae00c5
GR		 2668
2669 adapter->netdev = netdev;
2670 adapter->pdev = pdev;
2671
2672 hw = &adapter->hw;
2673 hw->back = adapter;
2674
41a1d04b 2675 adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
5eae00c5
GR		 2676 adapter->state = __I40EVF_STARTUP;
2677
2678 /* Call save state here because it relies on the adapter struct. */
2679 pci_save_state(pdev);
2680
2681 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
2682 pci_resource_len(pdev, 0));
2683 if (!hw->hw_addr) {
2684 err = -EIO;
2685 goto err_ioremap;
2686 }
2687 hw->vendor_id = pdev->vendor;
2688 hw->device_id = pdev->device;
2689 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
2690 hw->subsystem_vendor_id = pdev->subsystem_vendor;
2691 hw->subsystem_device_id = pdev->subsystem_device;
2692 hw->bus.device = PCI_SLOT(pdev->devfn);
2693 hw->bus.func = PCI_FUNC(pdev->devfn);
2694
8ddb3326
JB		 2695 /* set up the locks for the AQ, do this only once in probe
2696 * and destroy them only once in remove
2697 */
2698 mutex_init(&hw->aq.asq_mutex);
2699 mutex_init(&hw->aq.arq_mutex);
2700
8bb1a540
SK		 2701 INIT_LIST_HEAD(&adapter->mac_filter_list);
2702 INIT_LIST_HEAD(&adapter->vlan_filter_list);
2703
5eae00c5
GR		 2704 INIT_WORK(&adapter->reset_task, i40evf_reset_task);
2705 INIT_WORK(&adapter->adminq_task, i40evf_adminq_task);
2706 INIT_WORK(&adapter->watchdog_task, i40evf_watchdog_task);
2707 INIT_DELAYED_WORK(&adapter->init_task, i40evf_init_task);
9b32b0b5
MW		 2708 schedule_delayed_work(&adapter->init_task,
2709 msecs_to_jiffies(5 * (pdev->devfn & 0x07)));
5eae00c5
GR		 2710
2711 return 0;
2712
2713err_ioremap:
2714 free_netdev(netdev);
2715err_alloc_etherdev:
2716 pci_release_regions(pdev);
2717err_pci_reg:
2718err_dma:
2719 pci_disable_device(pdev);
2720 return err;
2721}
2722
2723#ifdef CONFIG_PM
2724/**
2725 * i40evf_suspend - Power management suspend routine
2726 * @pdev: PCI device information struct
2727 * @state: unused
2728 *
2729 * Called when the system (VM) is entering sleep/suspend.
2730 **/
2731static int i40evf_suspend(struct pci_dev *pdev, pm_message_t state)
2732{
2733 struct net_device *netdev = pci_get_drvdata(pdev);
2734 struct i40evf_adapter *adapter = netdev_priv(netdev);
2735 int retval = 0;
2736
2737 netif_device_detach(netdev);
2738
2739 if (netif_running(netdev)) {
2740 rtnl_lock();
2741 i40evf_down(adapter);
2742 rtnl_unlock();
2743 }
2744 i40evf_free_misc_irq(adapter);
2745 i40evf_reset_interrupt_capability(adapter);
2746
2747 retval = pci_save_state(pdev);
2748 if (retval)
2749 return retval;
2750
2751 pci_disable_device(pdev);
2752
2753 return 0;
2754}
2755
2756/**
dbedd44e 2757 * i40evf_resume - Power management resume routine
5eae00c5
GR		 2758 * @pdev: PCI device information struct
2759 *
2760 * Called when the system (VM) is resumed from sleep/suspend.
2761 **/
2762static int i40evf_resume(struct pci_dev *pdev)
2763{
2764 struct i40evf_adapter *adapter = pci_get_drvdata(pdev);
2765 struct net_device *netdev = adapter->netdev;
2766 u32 err;
2767
2768 pci_set_power_state(pdev, PCI_D0);
2769 pci_restore_state(pdev);
2770 /* pci_restore_state clears dev->state_saved so call
2771 * pci_save_state to restore it.
2772 */
2773 pci_save_state(pdev);
2774
2775 err = pci_enable_device_mem(pdev);
2776 if (err) {
2777 dev_err(&pdev->dev, "Cannot enable PCI device from suspend.\n");
2778 return err;
2779 }
2780 pci_set_master(pdev);
2781
2782 rtnl_lock();
2783 err = i40evf_set_interrupt_capability(adapter);
2784 if (err) {
f2a1c368 2785 rtnl_unlock();
5eae00c5
GR		 2786 dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n");
2787 return err;
2788 }
2789 err = i40evf_request_misc_irq(adapter);
2790 rtnl_unlock();
2791 if (err) {
2792 dev_err(&pdev->dev, "Cannot get interrupt vector.\n");
2793 return err;
2794 }
2795
2796 schedule_work(&adapter->reset_task);
2797
2798 netif_device_attach(netdev);
2799
2800 return err;
2801}
2802
2803#endif /* CONFIG_PM */
2804/**
2805 * i40evf_remove - Device Removal Routine
2806 * @pdev: PCI device information struct
2807 *
2808 * i40evf_remove is called by the PCI subsystem to alert the driver
2809 * that it should release a PCI device. The could be caused by a
2810 * Hot-Plug event, or because the driver is going to be removed from
2811 * memory.
2812 **/
2813static void i40evf_remove(struct pci_dev *pdev)
2814{
2815 struct net_device *netdev = pci_get_drvdata(pdev);
2816 struct i40evf_adapter *adapter = netdev_priv(netdev);
6ba36a24 2817 struct i40evf_mac_filter *f, *ftmp;
5eae00c5
GR		 2818 struct i40e_hw *hw = &adapter->hw;
2819
2820 cancel_delayed_work_sync(&adapter->init_task);
ef8693eb 2821 cancel_work_sync(&adapter->reset_task);
5eae00c5
GR		 2822
2823 if (adapter->netdev_registered) {
2824 unregister_netdev(netdev);
2825 adapter->netdev_registered = false;
2826 }
53d0b3ae 2827
f4a71881 2828 /* Shut down all the garbage mashers on the detention level */
5eae00c5 2829 adapter->state = __I40EVF_REMOVE;
f4a71881 2830 adapter->aq_required = 0;
f4a71881
MW		 2831 i40evf_request_reset(adapter);
2832 msleep(20);
2833 /* If the FW isn't responding, kick it once, but only once. */
2834 if (!i40evf_asq_done(hw)) {
2835 i40evf_request_reset(adapter);
2836 msleep(20);
2837 }
5eae00c5 2838
dbb01c8a 2839 if (adapter->msix_entries) {
5eae00c5 2840 i40evf_misc_irq_disable(adapter);
5eae00c5 2841 i40evf_free_misc_irq(adapter);
5eae00c5 2842 i40evf_reset_interrupt_capability(adapter);
d31944d6 2843 i40evf_free_q_vectors(adapter);
5eae00c5
GR		 2844 }
2845
e5d17c3e
MW		 2846 if (adapter->watchdog_timer.function)
2847 del_timer_sync(&adapter->watchdog_timer);
2848
dbb01c8a
MW		 2849 flush_scheduled_work();
2850
66f9af85
HZ		 2851 /* Clear user configurations for RSS */
2852 i40evf_clear_rss_config_user(&adapter->vsi);
2853
5eae00c5
GR		 2854 if (hw->aq.asq.count)
2855 i40evf_shutdown_adminq(hw);
2856
8ddb3326
JB		 2857 /* destroy the locks only once, here */
2858 mutex_destroy(&hw->aq.arq_mutex);
2859 mutex_destroy(&hw->aq.asq_mutex);
2860
5eae00c5
GR		 2861 iounmap(hw->hw_addr);
2862 pci_release_regions(pdev);
2863
e284fc88
MW		 2864 i40evf_free_all_tx_resources(adapter);
2865 i40evf_free_all_rx_resources(adapter);
5eae00c5
GR		 2866 i40evf_free_queues(adapter);
2867 kfree(adapter->vf_res);
6ba36a24
MW		 2868 /* If we got removed before an up/down sequence, we've got a filter
2869 * hanging out there that we need to get rid of.
2870 */
2871 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
2872 list_del(&f->list);
2873 kfree(f);
2874 }
37dfdf37
MW		 2875 list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
2876 list_del(&f->list);
2877 kfree(f);
2878 }
5eae00c5
GR		 2879
2880 free_netdev(netdev);
2881
2882 pci_disable_pcie_error_reporting(pdev);
2883
2884 pci_disable_device(pdev);
2885}
2886
2887static struct pci_driver i40evf_driver = {
2888 .name = i40evf_driver_name,
2889 .id_table = i40evf_pci_tbl,
2890 .probe = i40evf_probe,
2891 .remove = i40evf_remove,
2892#ifdef CONFIG_PM
2893 .suspend = i40evf_suspend,
2894 .resume = i40evf_resume,
2895#endif
2896 .shutdown = i40evf_shutdown,
2897};
2898
2899/**
2900 * i40e_init_module - Driver Registration Routine
2901 *
2902 * i40e_init_module is the first routine called when the driver is
2903 * loaded. All it does is register with the PCI subsystem.
2904 **/
2905static int __init i40evf_init_module(void)
2906{
2907 int ret;
75a64435 2908
5eae00c5 2909 pr_info("i40evf: %s - version %s\n", i40evf_driver_string,
75a64435 2910 i40evf_driver_version);
5eae00c5
GR		 2911
2912 pr_info("%s\n", i40evf_copyright);
2913
2803b16c
JB		 2914 i40evf_wq = create_singlethread_workqueue(i40evf_driver_name);
2915 if (!i40evf_wq) {
2916 pr_err("%s: Failed to create workqueue\n", i40evf_driver_name);
2917 return -ENOMEM;
2918 }
5eae00c5
GR		 2919 ret = pci_register_driver(&i40evf_driver);
2920 return ret;
2921}
2922
2923module_init(i40evf_init_module);
2924
2925/**
2926 * i40e_exit_module - Driver Exit Cleanup Routine
2927 *
2928 * i40e_exit_module is called just before the driver is removed
2929 * from memory.
2930 **/
2931static void __exit i40evf_exit_module(void)
2932{
2933 pci_unregister_driver(&i40evf_driver);
2803b16c 2934 destroy_workqueue(i40evf_wq);
5eae00c5
GR		 2935}
2936
2937module_exit(i40evf_exit_module);
2938
2939/* i40evf_main.c */
Linux kernel - Deliverables
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