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[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
07061958 40#define DRV_VERSION_MINOR 6
93e6fa2c 41#define DRV_VERSION_BUILD 12
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},
92871412 60 {PCI_VDEVICE(INTEL, I40E_DEV_ID_VF_HV), 0},
87e6c1d7 61 {PCI_VDEVICE(INTEL, I40E_DEV_ID_X722_VF), 0},
92871412 62 {PCI_VDEVICE(INTEL, I40E_DEV_ID_X722_VF_HV), 0},
5eae00c5
GR		 63 /* required last entry */
64 {0, }
65};
66
67MODULE_DEVICE_TABLE(pci, i40evf_pci_tbl);
68
69MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
70MODULE_DESCRIPTION("Intel(R) XL710 X710 Virtual Function Network Driver");
71MODULE_LICENSE("GPL");
72MODULE_VERSION(DRV_VERSION);
73
2803b16c
JB		 74static struct workqueue_struct *i40evf_wq;
75
5eae00c5
GR		 76/**
77 * i40evf_allocate_dma_mem_d - OS specific memory alloc for shared code
78 * @hw: pointer to the HW structure
79 * @mem: ptr to mem struct to fill out
80 * @size: size of memory requested
81 * @alignment: what to align the allocation to
82 **/
83i40e_status i40evf_allocate_dma_mem_d(struct i40e_hw *hw,
84 struct i40e_dma_mem *mem,
85 u64 size, u32 alignment)
86{
87 struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back;
88
89 if (!mem)
90 return I40E_ERR_PARAM;
91
92 mem->size = ALIGN(size, alignment);
93 mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size,
94 (dma_addr_t *)&mem->pa, GFP_KERNEL);
95 if (mem->va)
96 return 0;
97 else
98 return I40E_ERR_NO_MEMORY;
99}
100
101/**
102 * i40evf_free_dma_mem_d - OS specific memory free for shared code
103 * @hw: pointer to the HW structure
104 * @mem: ptr to mem struct to free
105 **/
106i40e_status i40evf_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
107{
108 struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back;
109
110 if (!mem || !mem->va)
111 return I40E_ERR_PARAM;
112 dma_free_coherent(&adapter->pdev->dev, mem->size,
113 mem->va, (dma_addr_t)mem->pa);
114 return 0;
115}
116
117/**
118 * i40evf_allocate_virt_mem_d - OS specific memory alloc for shared code
119 * @hw: pointer to the HW structure
120 * @mem: ptr to mem struct to fill out
121 * @size: size of memory requested
122 **/
123i40e_status i40evf_allocate_virt_mem_d(struct i40e_hw *hw,
124 struct i40e_virt_mem *mem, u32 size)
125{
126 if (!mem)
127 return I40E_ERR_PARAM;
128
129 mem->size = size;
130 mem->va = kzalloc(size, GFP_KERNEL);
131
132 if (mem->va)
133 return 0;
134 else
135 return I40E_ERR_NO_MEMORY;
136}
137
138/**
139 * i40evf_free_virt_mem_d - OS specific memory free for shared code
140 * @hw: pointer to the HW structure
141 * @mem: ptr to mem struct to free
142 **/
143i40e_status i40evf_free_virt_mem_d(struct i40e_hw *hw,
144 struct i40e_virt_mem *mem)
145{
146 if (!mem)
147 return I40E_ERR_PARAM;
148
149 /* it's ok to kfree a NULL pointer */
150 kfree(mem->va);
151
152 return 0;
153}
154
155/**
156 * i40evf_debug_d - OS dependent version of debug printing
157 * @hw: pointer to the HW structure
158 * @mask: debug level mask
159 * @fmt_str: printf-type format description
160 **/
161void i40evf_debug_d(void *hw, u32 mask, char *fmt_str, ...)
162{
163 char buf[512];
164 va_list argptr;
165
166 if (!(mask & ((struct i40e_hw *)hw)->debug_mask))
167 return;
168
169 va_start(argptr, fmt_str);
170 vsnprintf(buf, sizeof(buf), fmt_str, argptr);
171 va_end(argptr);
172
173 /* the debug string is already formatted with a newline */
174 pr_info("%s", buf);
175}
176
00e5ec4b
MW		 177/**
178 * i40evf_schedule_reset - Set the flags and schedule a reset event
179 * @adapter: board private structure
180 **/
181void i40evf_schedule_reset(struct i40evf_adapter *adapter)
182{
183 if (!(adapter->flags &
184 (I40EVF_FLAG_RESET_PENDING | I40EVF_FLAG_RESET_NEEDED))) {
185 adapter->flags |= I40EVF_FLAG_RESET_NEEDED;
186 schedule_work(&adapter->reset_task);
187 }
188}
189
5eae00c5
GR		 190/**
191 * i40evf_tx_timeout - Respond to a Tx Hang
192 * @netdev: network interface device structure
193 **/
194static void i40evf_tx_timeout(struct net_device *netdev)
195{
196 struct i40evf_adapter *adapter = netdev_priv(netdev);
197
198 adapter->tx_timeout_count++;
00e5ec4b 199 i40evf_schedule_reset(adapter);
5eae00c5
GR		 200}
201
202/**
203 * i40evf_misc_irq_disable - Mask off interrupt generation on the NIC
204 * @adapter: board private structure
205 **/
206static void i40evf_misc_irq_disable(struct i40evf_adapter *adapter)
207{
208 struct i40e_hw *hw = &adapter->hw;
75a64435 209
5eae00c5
GR		 210 wr32(hw, I40E_VFINT_DYN_CTL01, 0);
211
212 /* read flush */
213 rd32(hw, I40E_VFGEN_RSTAT);
214
215 synchronize_irq(adapter->msix_entries[0].vector);
216}
217
218/**
219 * i40evf_misc_irq_enable - Enable default interrupt generation settings
220 * @adapter: board private structure
221 **/
222static void i40evf_misc_irq_enable(struct i40evf_adapter *adapter)
223{
224 struct i40e_hw *hw = &adapter->hw;
75a64435 225
5eae00c5
GR		 226 wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK |
227 I40E_VFINT_DYN_CTL01_ITR_INDX_MASK);
b1f3366b 228 wr32(hw, I40E_VFINT_ICR0_ENA1, I40E_VFINT_ICR0_ENA1_ADMINQ_MASK);
5eae00c5
GR		 229
230 /* read flush */
231 rd32(hw, I40E_VFGEN_RSTAT);
232}
233
234/**
235 * i40evf_irq_disable - Mask off interrupt generation on the NIC
236 * @adapter: board private structure
237 **/
238static void i40evf_irq_disable(struct i40evf_adapter *adapter)
239{
240 int i;
241 struct i40e_hw *hw = &adapter->hw;
242
dbb01c8a
MW		 243 if (!adapter->msix_entries)
244 return;
245
5eae00c5
GR		 246 for (i = 1; i < adapter->num_msix_vectors; i++) {
247 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), 0);
248 synchronize_irq(adapter->msix_entries[i].vector);
249 }
250 /* read flush */
251 rd32(hw, I40E_VFGEN_RSTAT);
5eae00c5
GR		 252}
253
254/**
255 * i40evf_irq_enable_queues - Enable interrupt for specified queues
256 * @adapter: board private structure
257 * @mask: bitmap of queues to enable
258 **/
259void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask)
260{
261 struct i40e_hw *hw = &adapter->hw;
262 int i;
263
264 for (i = 1; i < adapter->num_msix_vectors; i++) {
41a1d04b 265 if (mask & BIT(i - 1)) {
5eae00c5
GR		 266 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1),
267 I40E_VFINT_DYN_CTLN1_INTENA_MASK |
97bf75f1 268 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK |
b1f3366b 269 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK);
5eae00c5
GR		 270 }
271 }
272}
273
274/**
275 * i40evf_fire_sw_int - Generate SW interrupt for specified vectors
276 * @adapter: board private structure
277 * @mask: bitmap of vectors to trigger
278 **/
75a64435 279static void i40evf_fire_sw_int(struct i40evf_adapter *adapter, u32 mask)
5eae00c5
GR		 280{
281 struct i40e_hw *hw = &adapter->hw;
282 int i;
d82acb35 283 u32 dyn_ctl;
5eae00c5 284
164ec1bf
MW		 285 if (mask & 1) {
286 dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTL01);
b1f3366b 287 dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK |
97bf75f1 288 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK |
b1f3366b 289 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK;
164ec1bf
MW		 290 wr32(hw, I40E_VFINT_DYN_CTL01, dyn_ctl);
291 }
5eae00c5 292 for (i = 1; i < adapter->num_msix_vectors; i++) {
41a1d04b 293 if (mask & BIT(i)) {
5eae00c5 294 dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTLN1(i - 1));
b1f3366b 295 dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK |
97bf75f1 296 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK |
b1f3366b 297 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK;
5eae00c5
GR		 298 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), dyn_ctl);
299 }
300 }
301}
302
303/**
304 * i40evf_irq_enable - Enable default interrupt generation settings
305 * @adapter: board private structure
69c1d70a 306 * @flush: boolean value whether to run rd32()
5eae00c5
GR		 307 **/
308void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush)
309{
310 struct i40e_hw *hw = &adapter->hw;
311
164ec1bf 312 i40evf_misc_irq_enable(adapter);
5eae00c5
GR		 313 i40evf_irq_enable_queues(adapter, ~0);
314
315 if (flush)
316 rd32(hw, I40E_VFGEN_RSTAT);
317}
318
319/**
320 * i40evf_msix_aq - Interrupt handler for vector 0
321 * @irq: interrupt number
322 * @data: pointer to netdev
323 **/
324static irqreturn_t i40evf_msix_aq(int irq, void *data)
325{
326 struct net_device *netdev = data;
327 struct i40evf_adapter *adapter = netdev_priv(netdev);
328 struct i40e_hw *hw = &adapter->hw;
329 u32 val;
5eae00c5 330
cfbe4dba
JB		 331 /* handle non-queue interrupts, these reads clear the registers */
332 val = rd32(hw, I40E_VFINT_ICR01);
333 val = rd32(hw, I40E_VFINT_ICR0_ENA1);
5eae00c5 334
ed17f7e5
JS		 335 val = rd32(hw, I40E_VFINT_DYN_CTL01) |
336 I40E_VFINT_DYN_CTL01_CLEARPBA_MASK;
5eae00c5
GR		 337 wr32(hw, I40E_VFINT_DYN_CTL01, val);
338
5eae00c5
GR		 339 /* schedule work on the private workqueue */
340 schedule_work(&adapter->adminq_task);
341
342 return IRQ_HANDLED;
343}
344
345/**
346 * i40evf_msix_clean_rings - MSIX mode Interrupt Handler
347 * @irq: interrupt number
348 * @data: pointer to a q_vector
349 **/
350static irqreturn_t i40evf_msix_clean_rings(int irq, void *data)
351{
352 struct i40e_q_vector *q_vector = data;
353
354 if (!q_vector->tx.ring && !q_vector->rx.ring)
355 return IRQ_HANDLED;
356
5d3465a1 357 napi_schedule_irqoff(&q_vector->napi);
5eae00c5
GR		 358
359 return IRQ_HANDLED;
360}
361
362/**
363 * i40evf_map_vector_to_rxq - associate irqs with rx queues
364 * @adapter: board private structure
365 * @v_idx: interrupt number
366 * @r_idx: queue number
367 **/
368static void
369i40evf_map_vector_to_rxq(struct i40evf_adapter *adapter, int v_idx, int r_idx)
370{
7d96ba1a 371 struct i40e_q_vector *q_vector = &adapter->q_vectors[v_idx];
0dd438d8 372 struct i40e_ring *rx_ring = &adapter->rx_rings[r_idx];
5eae00c5
GR		 373
374 rx_ring->q_vector = q_vector;
375 rx_ring->next = q_vector->rx.ring;
376 rx_ring->vsi = &adapter->vsi;
377 q_vector->rx.ring = rx_ring;
378 q_vector->rx.count++;
379 q_vector->rx.latency_range = I40E_LOW_LATENCY;
ee2319cf 380 q_vector->itr_countdown = ITR_COUNTDOWN_START;
5eae00c5
GR		 381}
382
383/**
384 * i40evf_map_vector_to_txq - associate irqs with tx queues
385 * @adapter: board private structure
386 * @v_idx: interrupt number
387 * @t_idx: queue number
388 **/
389static void
390i40evf_map_vector_to_txq(struct i40evf_adapter *adapter, int v_idx, int t_idx)
391{
7d96ba1a 392 struct i40e_q_vector *q_vector = &adapter->q_vectors[v_idx];
0dd438d8 393 struct i40e_ring *tx_ring = &adapter->tx_rings[t_idx];
5eae00c5
GR		 394
395 tx_ring->q_vector = q_vector;
396 tx_ring->next = q_vector->tx.ring;
397 tx_ring->vsi = &adapter->vsi;
398 q_vector->tx.ring = tx_ring;
399 q_vector->tx.count++;
400 q_vector->tx.latency_range = I40E_LOW_LATENCY;
ee2319cf 401 q_vector->itr_countdown = ITR_COUNTDOWN_START;
5eae00c5 402 q_vector->num_ringpairs++;
41a1d04b 403 q_vector->ring_mask |= BIT(t_idx);
5eae00c5
GR		 404}
405
406/**
407 * i40evf_map_rings_to_vectors - Maps descriptor rings to vectors
408 * @adapter: board private structure to initialize
409 *
410 * This function maps descriptor rings to the queue-specific vectors
411 * we were allotted through the MSI-X enabling code. Ideally, we'd have
412 * one vector per ring/queue, but on a constrained vector budget, we
413 * group the rings as "efficiently" as possible. You would add new
414 * mapping configurations in here.
415 **/
416static int i40evf_map_rings_to_vectors(struct i40evf_adapter *adapter)
417{
418 int q_vectors;
419 int v_start = 0;
420 int rxr_idx = 0, txr_idx = 0;
cc052927
MW		 421 int rxr_remaining = adapter->num_active_queues;
422 int txr_remaining = adapter->num_active_queues;
5eae00c5
GR		 423 int i, j;
424 int rqpv, tqpv;
425 int err = 0;
426
427 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
428
429 /* The ideal configuration...
430 * We have enough vectors to map one per queue.
431 */
973371da 432 if (q_vectors >= (rxr_remaining * 2)) {
5eae00c5
GR		 433 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
434 i40evf_map_vector_to_rxq(adapter, v_start, rxr_idx);
435
436 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
437 i40evf_map_vector_to_txq(adapter, v_start, txr_idx);
438 goto out;
439 }
440
441 /* If we don't have enough vectors for a 1-to-1
442 * mapping, we'll have to group them so there are
443 * multiple queues per vector.
444 * Re-adjusting *qpv takes care of the remainder.
445 */
446 for (i = v_start; i < q_vectors; i++) {
447 rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i);
448 for (j = 0; j < rqpv; j++) {
449 i40evf_map_vector_to_rxq(adapter, i, rxr_idx);
450 rxr_idx++;
451 rxr_remaining--;
452 }
453 }
454 for (i = v_start; i < q_vectors; i++) {
455 tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i);
456 for (j = 0; j < tqpv; j++) {
457 i40evf_map_vector_to_txq(adapter, i, txr_idx);
458 txr_idx++;
459 txr_remaining--;
460 }
461 }
462
463out:
464 adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS;
465
466 return err;
467}
468
7709b4c1
AD		 469#ifdef CONFIG_NET_POLL_CONTROLLER
470/**
471 * i40evf_netpoll - A Polling 'interrupt' handler
472 * @netdev: network interface device structure
473 *
474 * This is used by netconsole to send skbs without having to re-enable
475 * interrupts. It's not called while the normal interrupt routine is executing.
476 **/
477static void i40evf_netpoll(struct net_device *netdev)
478{
479 struct i40evf_adapter *adapter = netdev_priv(netdev);
480 int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
481 int i;
482
483 /* if interface is down do nothing */
484 if (test_bit(__I40E_DOWN, &adapter->vsi.state))
485 return;
486
487 for (i = 0; i < q_vectors; i++)
7d96ba1a 488 i40evf_msix_clean_rings(0, &adapter->q_vectors[i]);
7709b4c1
AD		 489}
490
491#endif
5eae00c5
GR		 492/**
493 * i40evf_request_traffic_irqs - Initialize MSI-X interrupts
494 * @adapter: board private structure
495 *
496 * Allocates MSI-X vectors for tx and rx handling, and requests
497 * interrupts from the kernel.
498 **/
499static int
500i40evf_request_traffic_irqs(struct i40evf_adapter *adapter, char *basename)
501{
502 int vector, err, q_vectors;
503 int rx_int_idx = 0, tx_int_idx = 0;
504
505 i40evf_irq_disable(adapter);
506 /* Decrement for Other and TCP Timer vectors */
507 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
508
509 for (vector = 0; vector < q_vectors; vector++) {
7d96ba1a 510 struct i40e_q_vector *q_vector = &adapter->q_vectors[vector];
5eae00c5
GR		 511
512 if (q_vector->tx.ring && q_vector->rx.ring) {
513 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
514 "i40evf-%s-%s-%d", basename,
515 "TxRx", rx_int_idx++);
516 tx_int_idx++;
517 } else if (q_vector->rx.ring) {
518 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
519 "i40evf-%s-%s-%d", basename,
520 "rx", rx_int_idx++);
521 } else if (q_vector->tx.ring) {
522 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
523 "i40evf-%s-%s-%d", basename,
524 "tx", tx_int_idx++);
525 } else {
526 /* skip this unused q_vector */
527 continue;
528 }
529 err = request_irq(
530 adapter->msix_entries[vector + NONQ_VECS].vector,
531 i40evf_msix_clean_rings,
532 0,
533 q_vector->name,
534 q_vector);
535 if (err) {
536 dev_info(&adapter->pdev->dev,
fb43201f 537 "Request_irq failed, error: %d\n", err);
5eae00c5
GR		 538 goto free_queue_irqs;
539 }
540 /* assign the mask for this irq */
541 irq_set_affinity_hint(
542 adapter->msix_entries[vector + NONQ_VECS].vector,
543 q_vector->affinity_mask);
544 }
545
546 return 0;
547
548free_queue_irqs:
549 while (vector) {
550 vector--;
551 irq_set_affinity_hint(
552 adapter->msix_entries[vector + NONQ_VECS].vector,
553 NULL);
554 free_irq(adapter->msix_entries[vector + NONQ_VECS].vector,
7d96ba1a 555 &adapter->q_vectors[vector]);
5eae00c5
GR		 556 }
557 return err;
558}
559
560/**
561 * i40evf_request_misc_irq - Initialize MSI-X interrupts
562 * @adapter: board private structure
563 *
564 * Allocates MSI-X vector 0 and requests interrupts from the kernel. This
565 * vector is only for the admin queue, and stays active even when the netdev
566 * is closed.
567 **/
568static int i40evf_request_misc_irq(struct i40evf_adapter *adapter)
569{
570 struct net_device *netdev = adapter->netdev;
571 int err;
572
b39c1e2c 573 snprintf(adapter->misc_vector_name,
9a21a007
CW		 574 sizeof(adapter->misc_vector_name) - 1, "i40evf-%s:mbx",
575 dev_name(&adapter->pdev->dev));
5eae00c5 576 err = request_irq(adapter->msix_entries[0].vector,
e1dfee8e
MW		 577 &i40evf_msix_aq, 0,
578 adapter->misc_vector_name, netdev);
5eae00c5
GR		 579 if (err) {
580 dev_err(&adapter->pdev->dev,
77fa28be
CS		 581 "request_irq for %s failed: %d\n",
582 adapter->misc_vector_name, err);
5eae00c5
GR		 583 free_irq(adapter->msix_entries[0].vector, netdev);
584 }
585 return err;
586}
587
588/**
589 * i40evf_free_traffic_irqs - Free MSI-X interrupts
590 * @adapter: board private structure
591 *
592 * Frees all MSI-X vectors other than 0.
593 **/
594static void i40evf_free_traffic_irqs(struct i40evf_adapter *adapter)
595{
596 int i;
597 int q_vectors;
75a64435 598
5eae00c5
GR		 599 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
600
601 for (i = 0; i < q_vectors; i++) {
602 irq_set_affinity_hint(adapter->msix_entries[i+1].vector,
603 NULL);
604 free_irq(adapter->msix_entries[i+1].vector,
7d96ba1a 605 &adapter->q_vectors[i]);
5eae00c5
GR		 606 }
607}
608
609/**
610 * i40evf_free_misc_irq - Free MSI-X miscellaneous vector
611 * @adapter: board private structure
612 *
613 * Frees MSI-X vector 0.
614 **/
615static void i40evf_free_misc_irq(struct i40evf_adapter *adapter)
616{
617 struct net_device *netdev = adapter->netdev;
618
619 free_irq(adapter->msix_entries[0].vector, netdev);
620}
621
622/**
623 * i40evf_configure_tx - Configure Transmit Unit after Reset
624 * @adapter: board private structure
625 *
626 * Configure the Tx unit of the MAC after a reset.
627 **/
628static void i40evf_configure_tx(struct i40evf_adapter *adapter)
629{
630 struct i40e_hw *hw = &adapter->hw;
631 int i;
75a64435 632
cc052927 633 for (i = 0; i < adapter->num_active_queues; i++)
0dd438d8 634 adapter->tx_rings[i].tail = hw->hw_addr + I40E_QTX_TAIL1(i);
5eae00c5
GR		 635}
636
637/**
638 * i40evf_configure_rx - Configure Receive Unit after Reset
639 * @adapter: board private structure
640 *
641 * Configure the Rx unit of the MAC after a reset.
642 **/
643static void i40evf_configure_rx(struct i40evf_adapter *adapter)
644{
645 struct i40e_hw *hw = &adapter->hw;
5eae00c5 646 int i;
5eae00c5 647
cc052927 648 for (i = 0; i < adapter->num_active_queues; i++) {
0dd438d8 649 adapter->rx_rings[i].tail = hw->hw_addr + I40E_QRX_TAIL1(i);
19b85e67 650 adapter->rx_rings[i].rx_buf_len = I40EVF_RXBUFFER_2048;
5eae00c5
GR		 651 }
652}
653
654/**
655 * i40evf_find_vlan - Search filter list for specific vlan filter
656 * @adapter: board private structure
657 * @vlan: vlan tag
658 *
659 * Returns ptr to the filter object or NULL
660 **/
661static struct
662i40evf_vlan_filter *i40evf_find_vlan(struct i40evf_adapter *adapter, u16 vlan)
663{
664 struct i40evf_vlan_filter *f;
665
666 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
667 if (vlan == f->vlan)
668 return f;
669 }
670 return NULL;
671}
672
673/**
674 * i40evf_add_vlan - Add a vlan filter to the list
675 * @adapter: board private structure
676 * @vlan: VLAN tag
677 *
678 * Returns ptr to the filter object or NULL when no memory available.
679 **/
680static struct
681i40evf_vlan_filter *i40evf_add_vlan(struct i40evf_adapter *adapter, u16 vlan)
682{
13acb546
MW		 683 struct i40evf_vlan_filter *f = NULL;
684 int count = 50;
685
686 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
687 &adapter->crit_section)) {
688 udelay(1);
689 if (--count == 0)
690 goto out;
691 }
5eae00c5
GR		 692
693 f = i40evf_find_vlan(adapter, vlan);
348d4994 694 if (!f) {
5eae00c5 695 f = kzalloc(sizeof(*f), GFP_ATOMIC);
348d4994 696 if (!f)
13acb546 697 goto clearout;
249c8b8d 698
5eae00c5
GR		 699 f->vlan = vlan;
700
701 INIT_LIST_HEAD(&f->list);
702 list_add(&f->list, &adapter->vlan_filter_list);
703 f->add = true;
704 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
705 }
706
13acb546
MW		 707clearout:
708 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
709out:
5eae00c5
GR		 710 return f;
711}
712
713/**
714 * i40evf_del_vlan - Remove a vlan filter from the list
715 * @adapter: board private structure
716 * @vlan: VLAN tag
717 **/
718static void i40evf_del_vlan(struct i40evf_adapter *adapter, u16 vlan)
719{
720 struct i40evf_vlan_filter *f;
13acb546
MW		 721 int count = 50;
722
723 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
724 &adapter->crit_section)) {
725 udelay(1);
726 if (--count == 0)
727 return;
728 }
5eae00c5
GR		 729
730 f = i40evf_find_vlan(adapter, vlan);
731 if (f) {
732 f->remove = true;
733 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
734 }
13acb546 735 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
5eae00c5
GR		 736}
737
738/**
739 * i40evf_vlan_rx_add_vid - Add a VLAN filter to a device
740 * @netdev: network device struct
741 * @vid: VLAN tag
742 **/
743static int i40evf_vlan_rx_add_vid(struct net_device *netdev,
75a64435 744 __always_unused __be16 proto, u16 vid)
5eae00c5
GR		 745{
746 struct i40evf_adapter *adapter = netdev_priv(netdev);
747
8ed995ff
MW		 748 if (!VLAN_ALLOWED(adapter))
749 return -EIO;
5eae00c5
GR		 750 if (i40evf_add_vlan(adapter, vid) == NULL)
751 return -ENOMEM;
752 return 0;
753}
754
755/**
756 * i40evf_vlan_rx_kill_vid - Remove a VLAN filter from a device
757 * @netdev: network device struct
758 * @vid: VLAN tag
759 **/
760static int i40evf_vlan_rx_kill_vid(struct net_device *netdev,
75a64435 761 __always_unused __be16 proto, u16 vid)
5eae00c5
GR		 762{
763 struct i40evf_adapter *adapter = netdev_priv(netdev);
764
8ed995ff
MW		 765 if (VLAN_ALLOWED(adapter)) {
766 i40evf_del_vlan(adapter, vid);
767 return 0;
768 }
769 return -EIO;
5eae00c5
GR		 770}
771
772/**
773 * i40evf_find_filter - Search filter list for specific mac filter
774 * @adapter: board private structure
775 * @macaddr: the MAC address
776 *
777 * Returns ptr to the filter object or NULL
778 **/
779static struct
780i40evf_mac_filter *i40evf_find_filter(struct i40evf_adapter *adapter,
781 u8 *macaddr)
782{
783 struct i40evf_mac_filter *f;
784
785 if (!macaddr)
786 return NULL;
787
788 list_for_each_entry(f, &adapter->mac_filter_list, list) {
789 if (ether_addr_equal(macaddr, f->macaddr))
790 return f;
791 }
792 return NULL;
793}
794
795/**
796 * i40e_add_filter - Add a mac filter to the filter list
797 * @adapter: board private structure
798 * @macaddr: the MAC address
799 *
800 * Returns ptr to the filter object or NULL when no memory available.
801 **/
802static struct
803i40evf_mac_filter *i40evf_add_filter(struct i40evf_adapter *adapter,
804 u8 *macaddr)
805{
806 struct i40evf_mac_filter *f;
54e16f64 807 int count = 50;
5eae00c5
GR		 808
809 if (!macaddr)
810 return NULL;
811
812 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
54e16f64 813 &adapter->crit_section)) {
b65476cd 814 udelay(1);
54e16f64
MW		 815 if (--count == 0)
816 return NULL;
817 }
5eae00c5
GR		 818
819 f = i40evf_find_filter(adapter, macaddr);
348d4994 820 if (!f) {
5eae00c5 821 f = kzalloc(sizeof(*f), GFP_ATOMIC);
348d4994 822 if (!f) {
5eae00c5
GR		 823 clear_bit(__I40EVF_IN_CRITICAL_TASK,
824 &adapter->crit_section);
825 return NULL;
826 }
827
9a173901 828 ether_addr_copy(f->macaddr, macaddr);
5eae00c5 829
63590b61 830 list_add_tail(&f->list, &adapter->mac_filter_list);
5eae00c5
GR		 831 f->add = true;
832 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
833 }
834
835 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
836 return f;
837}
838
839/**
840 * i40evf_set_mac - NDO callback to set port mac address
841 * @netdev: network interface device structure
842 * @p: pointer to an address structure
843 *
844 * Returns 0 on success, negative on failure
845 **/
846static int i40evf_set_mac(struct net_device *netdev, void *p)
847{
848 struct i40evf_adapter *adapter = netdev_priv(netdev);
849 struct i40e_hw *hw = &adapter->hw;
850 struct i40evf_mac_filter *f;
851 struct sockaddr *addr = p;
852
853 if (!is_valid_ether_addr(addr->sa_data))
854 return -EADDRNOTAVAIL;
855
856 if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
857 return 0;
858
14e52ee2
MW		 859 if (adapter->flags & I40EVF_FLAG_ADDR_SET_BY_PF)
860 return -EPERM;
861
862 f = i40evf_find_filter(adapter, hw->mac.addr);
863 if (f) {
864 f->remove = true;
865 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
866 }
867
5eae00c5
GR		 868 f = i40evf_add_filter(adapter, addr->sa_data);
869 if (f) {
9a173901
GR		 870 ether_addr_copy(hw->mac.addr, addr->sa_data);
871 ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr);
5eae00c5
GR		 872 }
873
874 return (f == NULL) ? -ENOMEM : 0;
875}
876
877/**
878 * i40evf_set_rx_mode - NDO callback to set the netdev filters
879 * @netdev: network interface device structure
880 **/
881static void i40evf_set_rx_mode(struct net_device *netdev)
882{
883 struct i40evf_adapter *adapter = netdev_priv(netdev);
884 struct i40evf_mac_filter *f, *ftmp;
885 struct netdev_hw_addr *uca;
886 struct netdev_hw_addr *mca;
2f41f335 887 struct netdev_hw_addr *ha;
54e16f64 888 int count = 50;
5eae00c5
GR		 889
890 /* add addr if not already in the filter list */
891 netdev_for_each_uc_addr(uca, netdev) {
892 i40evf_add_filter(adapter, uca->addr);
893 }
894 netdev_for_each_mc_addr(mca, netdev) {
895 i40evf_add_filter(adapter, mca->addr);
896 }
897
898 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
54e16f64 899 &adapter->crit_section)) {
b65476cd 900 udelay(1);
54e16f64
MW		 901 if (--count == 0) {
902 dev_err(&adapter->pdev->dev,
903 "Failed to get lock in %s\n", __func__);
904 return;
905 }
906 }
5eae00c5
GR		 907 /* remove filter if not in netdev list */
908 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
2f41f335
SN		 909 netdev_for_each_mc_addr(mca, netdev)
910 if (ether_addr_equal(mca->addr, f->macaddr))
911 goto bottom_of_search_loop;
912
913 netdev_for_each_uc_addr(uca, netdev)
914 if (ether_addr_equal(uca->addr, f->macaddr))
915 goto bottom_of_search_loop;
916
917 for_each_dev_addr(netdev, ha)
918 if (ether_addr_equal(ha->addr, f->macaddr))
919 goto bottom_of_search_loop;
920
921 if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr))
922 goto bottom_of_search_loop;
923
924 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
925 f->remove = true;
926 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
927
928bottom_of_search_loop:
929 continue;
5eae00c5 930 }
47d34839
ASJ		 931
932 if (netdev->flags & IFF_PROMISC &&
933 !(adapter->flags & I40EVF_FLAG_PROMISC_ON))
934 adapter->aq_required |= I40EVF_FLAG_AQ_REQUEST_PROMISC;
935 else if (!(netdev->flags & IFF_PROMISC) &&
936 adapter->flags & I40EVF_FLAG_PROMISC_ON)
937 adapter->aq_required |= I40EVF_FLAG_AQ_RELEASE_PROMISC;
938
f42a5c74
ASJ		 939 if (netdev->flags & IFF_ALLMULTI &&
940 !(adapter->flags & I40EVF_FLAG_ALLMULTI_ON))
941 adapter->aq_required |= I40EVF_FLAG_AQ_REQUEST_ALLMULTI;
942 else if (!(netdev->flags & IFF_ALLMULTI) &&
943 adapter->flags & I40EVF_FLAG_ALLMULTI_ON)
944 adapter->aq_required |= I40EVF_FLAG_AQ_RELEASE_ALLMULTI;
945
5eae00c5
GR		 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
b163098e 1002 i40evf_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
5eae00c5
GR		 1003 }
1004}
1005
1006/**
1007 * i40evf_up_complete - Finish the last steps of bringing up a connection
1008 * @adapter: board private structure
1009 **/
1010static int i40evf_up_complete(struct i40evf_adapter *adapter)
1011{
1012 adapter->state = __I40EVF_RUNNING;
1013 clear_bit(__I40E_DOWN, &adapter->vsi.state);
1014
1015 i40evf_napi_enable_all(adapter);
1016
1017 adapter->aq_required |= I40EVF_FLAG_AQ_ENABLE_QUEUES;
1018 mod_timer_pending(&adapter->watchdog_timer, jiffies + 1);
1019 return 0;
1020}
1021
5eae00c5
GR		 1022/**
1023 * i40e_down - Shutdown the connection processing
1024 * @adapter: board private structure
1025 **/
1026void i40evf_down(struct i40evf_adapter *adapter)
1027{
1028 struct net_device *netdev = adapter->netdev;
1029 struct i40evf_mac_filter *f;
1030
209dc4da 1031 if (adapter->state <= __I40EVF_DOWN_PENDING)
ddf0b3a6
MW		 1032 return;
1033
53d0b3ae
MW		 1034 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
1035 &adapter->crit_section))
1036 usleep_range(500, 1000);
1037
63e18c25
MW		 1038 netif_carrier_off(netdev);
1039 netif_tx_disable(netdev);
748c434b 1040 i40evf_napi_disable_all(adapter);
63e18c25 1041 i40evf_irq_disable(adapter);
53d0b3ae 1042
ef8693eb 1043 /* remove all MAC filters */
5eae00c5
GR		 1044 list_for_each_entry(f, &adapter->mac_filter_list, list) {
1045 f->remove = true;
1046 }
ed1f5b58
MW		 1047 /* remove all VLAN filters */
1048 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
1049 f->remove = true;
1050 }
ef8693eb
MW		 1051 if (!(adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) &&
1052 adapter->state != __I40EVF_RESETTING) {
53d0b3ae
MW		 1053 /* cancel any current operation */
1054 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
53d0b3ae
MW		 1055 /* Schedule operations to close down the HW. Don't wait
1056 * here for this to complete. The watchdog is still running
1057 * and it will take care of this.
1058 */
1059 adapter->aq_required = I40EVF_FLAG_AQ_DEL_MAC_FILTER;
ed1f5b58 1060 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
ef8693eb 1061 adapter->aq_required |= I40EVF_FLAG_AQ_DISABLE_QUEUES;
ef8693eb 1062 }
5eae00c5 1063
53d0b3ae 1064 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
5eae00c5
GR		 1065}
1066
1067/**
1068 * i40evf_acquire_msix_vectors - Setup the MSIX capability
1069 * @adapter: board private structure
1070 * @vectors: number of vectors to request
1071 *
1072 * Work with the OS to set up the MSIX vectors needed.
1073 *
1074 * Returns 0 on success, negative on failure
1075 **/
1076static int
1077i40evf_acquire_msix_vectors(struct i40evf_adapter *adapter, int vectors)
1078{
1079 int err, vector_threshold;
1080
1081 /* We'll want at least 3 (vector_threshold):
1082 * 0) Other (Admin Queue and link, mostly)
1083 * 1) TxQ[0] Cleanup
1084 * 2) RxQ[0] Cleanup
1085 */
1086 vector_threshold = MIN_MSIX_COUNT;
1087
1088 /* The more we get, the more we will assign to Tx/Rx Cleanup
1089 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1090 * Right now, we simply care about how many we'll get; we'll
1091 * set them up later while requesting irq's.
1092 */
fc2f2f5d
AG		 1093 err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
1094 vector_threshold, vectors);
1095 if (err < 0) {
80e72893 1096 dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n");
5eae00c5
GR		 1097 kfree(adapter->msix_entries);
1098 adapter->msix_entries = NULL;
fc2f2f5d 1099 return err;
5eae00c5 1100 }
fc2f2f5d
AG		 1101
1102 /* Adjust for only the vectors we'll use, which is minimum
1103 * of max_msix_q_vectors + NONQ_VECS, or the number of
1104 * vectors we were allocated.
1105 */
1106 adapter->num_msix_vectors = err;
1107 return 0;
5eae00c5
GR		 1108}
1109
1110/**
1111 * i40evf_free_queues - Free memory for all rings
1112 * @adapter: board private structure to initialize
1113 *
1114 * Free all of the memory associated with queue pairs.
1115 **/
1116static void i40evf_free_queues(struct i40evf_adapter *adapter)
1117{
5eae00c5
GR		 1118 if (!adapter->vsi_res)
1119 return;
0dd438d8 1120 kfree(adapter->tx_rings);
10311540 1121 adapter->tx_rings = NULL;
0dd438d8 1122 kfree(adapter->rx_rings);
10311540 1123 adapter->rx_rings = NULL;
5eae00c5
GR		 1124}
1125
1126/**
1127 * i40evf_alloc_queues - Allocate memory for all rings
1128 * @adapter: board private structure to initialize
1129 *
1130 * We allocate one ring per queue at run-time since we don't know the
1131 * number of queues at compile-time. The polling_netdev array is
1132 * intended for Multiqueue, but should work fine with a single queue.
1133 **/
1134static int i40evf_alloc_queues(struct i40evf_adapter *adapter)
1135{
1136 int i;
1137
0dd438d8
MW		 1138 adapter->tx_rings = kcalloc(adapter->num_active_queues,
1139 sizeof(struct i40e_ring), GFP_KERNEL);
1140 if (!adapter->tx_rings)
1141 goto err_out;
1142 adapter->rx_rings = kcalloc(adapter->num_active_queues,
1143 sizeof(struct i40e_ring), GFP_KERNEL);
1144 if (!adapter->rx_rings)
1145 goto err_out;
1146
cc052927 1147 for (i = 0; i < adapter->num_active_queues; i++) {
5eae00c5
GR		 1148 struct i40e_ring *tx_ring;
1149 struct i40e_ring *rx_ring;
1150
0dd438d8 1151 tx_ring = &adapter->tx_rings[i];
5eae00c5
GR		 1152
1153 tx_ring->queue_index = i;
1154 tx_ring->netdev = adapter->netdev;
1155 tx_ring->dev = &adapter->pdev->dev;
d732a184 1156 tx_ring->count = adapter->tx_desc_count;
1f012279
ASJ		 1157 if (adapter->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
1158 tx_ring->flags |= I40E_TXR_FLAGS_WB_ON_ITR;
5eae00c5 1159
0dd438d8 1160 rx_ring = &adapter->rx_rings[i];
5eae00c5
GR		 1161 rx_ring->queue_index = i;
1162 rx_ring->netdev = adapter->netdev;
1163 rx_ring->dev = &adapter->pdev->dev;
d732a184 1164 rx_ring->count = adapter->rx_desc_count;
5eae00c5
GR		 1165 }
1166
1167 return 0;
1168
1169err_out:
1170 i40evf_free_queues(adapter);
1171 return -ENOMEM;
1172}
1173
1174/**
1175 * i40evf_set_interrupt_capability - set MSI-X or FAIL if not supported
1176 * @adapter: board private structure to initialize
1177 *
1178 * Attempt to configure the interrupts using the best available
1179 * capabilities of the hardware and the kernel.
1180 **/
1181static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter)
1182{
1183 int vector, v_budget;
1184 int pairs = 0;
1185 int err = 0;
1186
1187 if (!adapter->vsi_res) {
1188 err = -EIO;
1189 goto out;
1190 }
cc052927 1191 pairs = adapter->num_active_queues;
5eae00c5
GR		 1192
1193 /* It's easy to be greedy for MSI-X vectors, but it really
1194 * doesn't do us much good if we have a lot more vectors
1195 * than CPU's. So let's be conservative and only ask for
1196 * (roughly) twice the number of vectors as there are CPU's.
1197 */
30a500e2
MW		 1198 v_budget = min_t(int, pairs, (int)(num_online_cpus() * 2)) + NONQ_VECS;
1199 v_budget = min_t(int, v_budget, (int)adapter->vf_res->max_vectors);
5eae00c5 1200
5eae00c5
GR		 1201 adapter->msix_entries = kcalloc(v_budget,
1202 sizeof(struct msix_entry), GFP_KERNEL);
1203 if (!adapter->msix_entries) {
1204 err = -ENOMEM;
1205 goto out;
1206 }
1207
1208 for (vector = 0; vector < v_budget; vector++)
1209 adapter->msix_entries[vector].entry = vector;
1210
313ed2d5 1211 err = i40evf_acquire_msix_vectors(adapter, v_budget);
5eae00c5
GR		 1212
1213out:
e6c4cf6f
MW		 1214 netif_set_real_num_rx_queues(adapter->netdev, pairs);
1215 netif_set_real_num_tx_queues(adapter->netdev, pairs);
5eae00c5
GR		 1216 return err;
1217}
1218
e25d00b8 1219/**
43a3d9ba
MW		 1220 * i40e_config_rss_aq - Configure RSS keys and lut by using AQ commands
1221 * @adapter: board private structure
2c86ac3c
HZ		 1222 *
1223 * Return 0 on success, negative on failure
e25d00b8 1224 **/
43a3d9ba 1225static int i40evf_config_rss_aq(struct i40evf_adapter *adapter)
e25d00b8 1226{
43a3d9ba
MW		 1227 struct i40e_aqc_get_set_rss_key_data *rss_key =
1228 (struct i40e_aqc_get_set_rss_key_data *)adapter->rss_key;
e25d00b8 1229 struct i40e_hw *hw = &adapter->hw;
2c86ac3c 1230 int ret = 0;
e25d00b8 1231
e25d00b8
ASJ		 1232 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
1233 /* bail because we already have a command pending */
e3d132d1 1234 dev_err(&adapter->pdev->dev, "Cannot configure RSS, command %d pending\n",
e25d00b8 1235 adapter->current_op);
2c86ac3c 1236 return -EBUSY;
e25d00b8
ASJ		 1237 }
1238
43a3d9ba
MW		 1239 ret = i40evf_aq_set_rss_key(hw, adapter->vsi.id, rss_key);
1240 if (ret) {
1241 dev_err(&adapter->pdev->dev, "Cannot set RSS key, err %s aq_err %s\n",
1242 i40evf_stat_str(hw, ret),
1243 i40evf_aq_str(hw, hw->aq.asq_last_status));
1244 return ret;
1245
2c86ac3c 1246 }
e25d00b8 1247
43a3d9ba
MW		 1248 ret = i40evf_aq_set_rss_lut(hw, adapter->vsi.id, false,
1249 adapter->rss_lut, adapter->rss_lut_size);
1250 if (ret) {
1251 dev_err(&adapter->pdev->dev, "Cannot set RSS lut, err %s aq_err %s\n",
1252 i40evf_stat_str(hw, ret),
1253 i40evf_aq_str(hw, hw->aq.asq_last_status));
e25d00b8
ASJ		 1254 }
1255
2c86ac3c 1256 return ret;
43a3d9ba 1257
e25d00b8
ASJ		 1258}
1259
1260/**
2c86ac3c 1261 * i40evf_config_rss_reg - Configure RSS keys and lut by writing registers
43a3d9ba 1262 * @adapter: board private structure
2c86ac3c
HZ		 1263 *
1264 * Returns 0 on success, negative on failure
e25d00b8 1265 **/
43a3d9ba 1266static int i40evf_config_rss_reg(struct i40evf_adapter *adapter)
e25d00b8
ASJ		 1267{
1268 struct i40e_hw *hw = &adapter->hw;
43a3d9ba 1269 u32 *dw;
2c86ac3c 1270 u16 i;
e25d00b8 1271
43a3d9ba
MW		 1272 dw = (u32 *)adapter->rss_key;
1273 for (i = 0; i <= adapter->rss_key_size / 4; i++)
1274 wr32(hw, I40E_VFQF_HKEY(i), dw[i]);
2c86ac3c 1275
43a3d9ba
MW		 1276 dw = (u32 *)adapter->rss_lut;
1277 for (i = 0; i <= adapter->rss_lut_size / 4; i++)
1278 wr32(hw, I40E_VFQF_HLUT(i), dw[i]);
2c86ac3c 1279
e25d00b8 1280 i40e_flush(hw);
2c86ac3c
HZ		 1281
1282 return 0;
1283}
1284
1285/**
1286 * i40evf_config_rss - Configure RSS keys and lut
43a3d9ba 1287 * @adapter: board private structure
90b02b43
HZ		 1288 *
1289 * Returns 0 on success, negative on failure
1290 **/
43a3d9ba 1291int i40evf_config_rss(struct i40evf_adapter *adapter)
90b02b43 1292{
90b02b43 1293
43a3d9ba
MW		 1294 if (RSS_PF(adapter)) {
1295 adapter->aq_required |= I40EVF_FLAG_AQ_SET_RSS_LUT |
1296 I40EVF_FLAG_AQ_SET_RSS_KEY;
1297 return 0;
1298 } else if (RSS_AQ(adapter)) {
1299 return i40evf_config_rss_aq(adapter);
1300 } else {
1301 return i40evf_config_rss_reg(adapter);
1302 }
90b02b43
HZ		 1303}
1304
2c86ac3c
HZ		 1305/**
1306 * i40evf_fill_rss_lut - Fill the lut with default values
43a3d9ba 1307 * @adapter: board private structure
2c86ac3c 1308 **/
43a3d9ba 1309static void i40evf_fill_rss_lut(struct i40evf_adapter *adapter)
2c86ac3c
HZ		 1310{
1311 u16 i;
1312
43a3d9ba
MW		 1313 for (i = 0; i < adapter->rss_lut_size; i++)
1314 adapter->rss_lut[i] = i % adapter->num_active_queues;
e25d00b8
ASJ		 1315}
1316
1317/**
96a81986 1318 * i40evf_init_rss - Prepare for RSS
e25d00b8 1319 * @adapter: board private structure
2c86ac3c
HZ		 1320 *
1321 * Return 0 on success, negative on failure
e25d00b8 1322 **/
2c86ac3c 1323static int i40evf_init_rss(struct i40evf_adapter *adapter)
e25d00b8
ASJ		 1324{
1325 struct i40e_hw *hw = &adapter->hw;
2c86ac3c 1326 int ret;
e25d00b8 1327
43a3d9ba
MW		 1328 if (!RSS_PF(adapter)) {
1329 /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */
1330 if (adapter->vf_res->vf_offload_flags &
1331 I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
1332 adapter->hena = I40E_DEFAULT_RSS_HENA_EXPANDED;
1333 else
1334 adapter->hena = I40E_DEFAULT_RSS_HENA;
e25d00b8 1335
43a3d9ba
MW		 1336 wr32(hw, I40E_VFQF_HENA(0), (u32)adapter->hena);
1337 wr32(hw, I40E_VFQF_HENA(1), (u32)(adapter->hena >> 32));
1338 }
66f9af85 1339
43a3d9ba 1340 i40evf_fill_rss_lut(adapter);
66f9af85 1341
43a3d9ba
MW		 1342 netdev_rss_key_fill((void *)adapter->rss_key, adapter->rss_key_size);
1343 ret = i40evf_config_rss(adapter);
2c86ac3c
HZ		 1344
1345 return ret;
e25d00b8
ASJ		 1346}
1347
5eae00c5
GR		 1348/**
1349 * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors
1350 * @adapter: board private structure to initialize
1351 *
1352 * We allocate one q_vector per queue interrupt. If allocation fails we
1353 * return -ENOMEM.
1354 **/
1355static int i40evf_alloc_q_vectors(struct i40evf_adapter *adapter)
1356{
7d96ba1a 1357 int q_idx = 0, num_q_vectors;
5eae00c5
GR		 1358 struct i40e_q_vector *q_vector;
1359
1360 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
0dd438d8 1361 adapter->q_vectors = kcalloc(num_q_vectors, sizeof(*q_vector),
7d96ba1a
MW		 1362 GFP_KERNEL);
1363 if (!adapter->q_vectors)
311f23e9 1364 return -ENOMEM;
5eae00c5
GR		 1365
1366 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
7d96ba1a 1367 q_vector = &adapter->q_vectors[q_idx];
5eae00c5
GR		 1368 q_vector->adapter = adapter;
1369 q_vector->vsi = &adapter->vsi;
1370 q_vector->v_idx = q_idx;
1371 netif_napi_add(adapter->netdev, &q_vector->napi,
75a64435 1372 i40evf_napi_poll, NAPI_POLL_WEIGHT);
5eae00c5
GR		 1373 }
1374
1375 return 0;
5eae00c5
GR		 1376}
1377
1378/**
1379 * i40evf_free_q_vectors - Free memory allocated for interrupt vectors
1380 * @adapter: board private structure to initialize
1381 *
1382 * This function frees the memory allocated to the q_vectors. In addition if
1383 * NAPI is enabled it will delete any references to the NAPI struct prior
1384 * to freeing the q_vector.
1385 **/
1386static void i40evf_free_q_vectors(struct i40evf_adapter *adapter)
1387{
1388 int q_idx, num_q_vectors;
1389 int napi_vectors;
1390
1391 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
cc052927 1392 napi_vectors = adapter->num_active_queues;
5eae00c5
GR		 1393
1394 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
7d96ba1a 1395 struct i40e_q_vector *q_vector = &adapter->q_vectors[q_idx];
5eae00c5
GR		 1396 if (q_idx < napi_vectors)
1397 netif_napi_del(&q_vector->napi);
5eae00c5 1398 }
7d96ba1a 1399 kfree(adapter->q_vectors);
5eae00c5
GR		 1400}
1401
1402/**
1403 * i40evf_reset_interrupt_capability - Reset MSIX setup
1404 * @adapter: board private structure
1405 *
1406 **/
1407void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter)
1408{
1409 pci_disable_msix(adapter->pdev);
1410 kfree(adapter->msix_entries);
1411 adapter->msix_entries = NULL;
5eae00c5
GR		 1412}
1413
1414/**
1415 * i40evf_init_interrupt_scheme - Determine if MSIX is supported and init
1416 * @adapter: board private structure to initialize
1417 *
1418 **/
1419int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter)
1420{
1421 int err;
1422
62fe2a86 1423 rtnl_lock();
5eae00c5 1424 err = i40evf_set_interrupt_capability(adapter);
62fe2a86 1425 rtnl_unlock();
5eae00c5
GR		 1426 if (err) {
1427 dev_err(&adapter->pdev->dev,
1428 "Unable to setup interrupt capabilities\n");
1429 goto err_set_interrupt;
1430 }
1431
1432 err = i40evf_alloc_q_vectors(adapter);
1433 if (err) {
1434 dev_err(&adapter->pdev->dev,
1435 "Unable to allocate memory for queue vectors\n");
1436 goto err_alloc_q_vectors;
1437 }
1438
1439 err = i40evf_alloc_queues(adapter);
1440 if (err) {
1441 dev_err(&adapter->pdev->dev,
1442 "Unable to allocate memory for queues\n");
1443 goto err_alloc_queues;
1444 }
1445
1446 dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u",
75a64435
MW		 1447 (adapter->num_active_queues > 1) ? "Enabled" : "Disabled",
1448 adapter->num_active_queues);
5eae00c5
GR		 1449
1450 return 0;
1451err_alloc_queues:
1452 i40evf_free_q_vectors(adapter);
1453err_alloc_q_vectors:
1454 i40evf_reset_interrupt_capability(adapter);
1455err_set_interrupt:
1456 return err;
1457}
1458
66f9af85 1459/**
43a3d9ba
MW		 1460 * i40evf_free_rss - Free memory used by RSS structs
1461 * @adapter: board private structure
66f9af85 1462 **/
43a3d9ba 1463static void i40evf_free_rss(struct i40evf_adapter *adapter)
66f9af85 1464{
43a3d9ba
MW		 1465 kfree(adapter->rss_key);
1466 adapter->rss_key = NULL;
66f9af85 1467
43a3d9ba
MW		 1468 kfree(adapter->rss_lut);
1469 adapter->rss_lut = NULL;
66f9af85
HZ		 1470}
1471
5eae00c5
GR		 1472/**
1473 * i40evf_watchdog_timer - Periodic call-back timer
1474 * @data: pointer to adapter disguised as unsigned long
1475 **/
1476static void i40evf_watchdog_timer(unsigned long data)
1477{
1478 struct i40evf_adapter *adapter = (struct i40evf_adapter *)data;
75a64435 1479
5eae00c5
GR		 1480 schedule_work(&adapter->watchdog_task);
1481 /* timer will be rescheduled in watchdog task */
1482}
1483
1484/**
1485 * i40evf_watchdog_task - Periodic call-back task
1486 * @work: pointer to work_struct
1487 **/
1488static void i40evf_watchdog_task(struct work_struct *work)
1489{
1490 struct i40evf_adapter *adapter = container_of(work,
75a64435
MW		 1491 struct i40evf_adapter,
1492 watchdog_task);
5eae00c5 1493 struct i40e_hw *hw = &adapter->hw;
ee5c1e92 1494 u32 reg_val;
5eae00c5 1495
ef8693eb
MW		 1496 if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section))
1497 goto restart_watchdog;
1498
1499 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) {
ee5c1e92
MW		 1500 reg_val = rd32(hw, I40E_VFGEN_RSTAT) &
1501 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
1502 if ((reg_val == I40E_VFR_VFACTIVE) ||
1503 (reg_val == I40E_VFR_COMPLETED)) {
ef8693eb
MW		 1504 /* A chance for redemption! */
1505 dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n");
1506 adapter->state = __I40EVF_STARTUP;
1507 adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED;
1508 schedule_delayed_work(&adapter->init_task, 10);
1509 clear_bit(__I40EVF_IN_CRITICAL_TASK,
1510 &adapter->crit_section);
1511 /* Don't reschedule the watchdog, since we've restarted
1512 * the init task. When init_task contacts the PF and
1513 * gets everything set up again, it'll restart the
1514 * watchdog for us. Down, boy. Sit. Stay. Woof.
1515 */
1516 return;
1517 }
ef8693eb
MW		 1518 adapter->aq_required = 0;
1519 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
5eae00c5 1520 goto watchdog_done;
ef8693eb 1521 }
5eae00c5 1522
ef8693eb
MW		 1523 if ((adapter->state < __I40EVF_DOWN) ||
1524 (adapter->flags & I40EVF_FLAG_RESET_PENDING))
5eae00c5
GR		 1525 goto watchdog_done;
1526
ef8693eb 1527 /* check for reset */
ee5c1e92
MW		 1528 reg_val = rd32(hw, I40E_VF_ARQLEN1) & I40E_VF_ARQLEN1_ARQENABLE_MASK;
1529 if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) && !reg_val) {
5eae00c5 1530 adapter->state = __I40EVF_RESETTING;
ef8693eb 1531 adapter->flags |= I40EVF_FLAG_RESET_PENDING;
249c8b8d 1532 dev_err(&adapter->pdev->dev, "Hardware reset detected\n");
5eae00c5 1533 schedule_work(&adapter->reset_task);
ef8693eb
MW		 1534 adapter->aq_required = 0;
1535 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
5eae00c5
GR		 1536 goto watchdog_done;
1537 }
1538
1539 /* Process admin queue tasks. After init, everything gets done
1540 * here so we don't race on the admin queue.
1541 */
ed636960 1542 if (adapter->current_op) {
0758e7cb
MW		 1543 if (!i40evf_asq_done(hw)) {
1544 dev_dbg(&adapter->pdev->dev, "Admin queue timeout\n");
1545 i40evf_send_api_ver(adapter);
1546 }
5eae00c5 1547 goto watchdog_done;
0758e7cb 1548 }
e6d038de
MW		 1549 if (adapter->aq_required & I40EVF_FLAG_AQ_GET_CONFIG) {
1550 i40evf_send_vf_config_msg(adapter);
1551 goto watchdog_done;
1552 }
5eae00c5 1553
e284fc88
MW		 1554 if (adapter->aq_required & I40EVF_FLAG_AQ_DISABLE_QUEUES) {
1555 i40evf_disable_queues(adapter);
1556 goto watchdog_done;
1557 }
1558
5eae00c5
GR		 1559 if (adapter->aq_required & I40EVF_FLAG_AQ_MAP_VECTORS) {
1560 i40evf_map_queues(adapter);
1561 goto watchdog_done;
1562 }
1563
1564 if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_MAC_FILTER) {
1565 i40evf_add_ether_addrs(adapter);
1566 goto watchdog_done;
1567 }
1568
1569 if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_VLAN_FILTER) {
1570 i40evf_add_vlans(adapter);
1571 goto watchdog_done;
1572 }
1573
1574 if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_MAC_FILTER) {
1575 i40evf_del_ether_addrs(adapter);
1576 goto watchdog_done;
1577 }
1578
1579 if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_VLAN_FILTER) {
1580 i40evf_del_vlans(adapter);
1581 goto watchdog_done;
1582 }
1583
5eae00c5
GR		 1584 if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_QUEUES) {
1585 i40evf_configure_queues(adapter);
1586 goto watchdog_done;
1587 }
1588
1589 if (adapter->aq_required & I40EVF_FLAG_AQ_ENABLE_QUEUES) {
1590 i40evf_enable_queues(adapter);
1591 goto watchdog_done;
1592 }
1593
e25d00b8
ASJ		 1594 if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_RSS) {
1595 /* This message goes straight to the firmware, not the
1596 * PF, so we don't have to set current_op as we will
1597 * not get a response through the ARQ.
1598 */
96a81986 1599 i40evf_init_rss(adapter);
e25d00b8
ASJ		 1600 adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_RSS;
1601 goto watchdog_done;
1602 }
43a3d9ba
MW		 1603 if (adapter->aq_required & I40EVF_FLAG_AQ_GET_HENA) {
1604 i40evf_get_hena(adapter);
1605 goto watchdog_done;
1606 }
1607 if (adapter->aq_required & I40EVF_FLAG_AQ_SET_HENA) {
1608 i40evf_set_hena(adapter);
1609 goto watchdog_done;
1610 }
1611 if (adapter->aq_required & I40EVF_FLAG_AQ_SET_RSS_KEY) {
1612 i40evf_set_rss_key(adapter);
1613 goto watchdog_done;
1614 }
1615 if (adapter->aq_required & I40EVF_FLAG_AQ_SET_RSS_LUT) {
1616 i40evf_set_rss_lut(adapter);
1617 goto watchdog_done;
1618 }
e25d00b8 1619
47d34839
ASJ		 1620 if (adapter->aq_required & I40EVF_FLAG_AQ_REQUEST_PROMISC) {
1621 i40evf_set_promiscuous(adapter, I40E_FLAG_VF_UNICAST_PROMISC |
1622 I40E_FLAG_VF_MULTICAST_PROMISC);
1623 goto watchdog_done;
1624 }
1625
f42a5c74
ASJ		 1626 if (adapter->aq_required & I40EVF_FLAG_AQ_REQUEST_ALLMULTI) {
1627 i40evf_set_promiscuous(adapter, I40E_FLAG_VF_MULTICAST_PROMISC);
1628 goto watchdog_done;
1629 }
1630
1631 if ((adapter->aq_required & I40EVF_FLAG_AQ_RELEASE_PROMISC) &&
1632 (adapter->aq_required & I40EVF_FLAG_AQ_RELEASE_ALLMULTI)) {
47d34839
ASJ		 1633 i40evf_set_promiscuous(adapter, 0);
1634 goto watchdog_done;
1635 }
1636
5eae00c5
GR		 1637 if (adapter->state == __I40EVF_RUNNING)
1638 i40evf_request_stats(adapter);
5eae00c5 1639watchdog_done:
4870e176
MW		 1640 if (adapter->state == __I40EVF_RUNNING) {
1641 i40evf_irq_enable_queues(adapter, ~0);
1642 i40evf_fire_sw_int(adapter, 0xFF);
1643 } else {
1644 i40evf_fire_sw_int(adapter, 0x1);
1645 }
1646
ef8693eb
MW		 1647 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
1648restart_watchdog:
d3e2edb7
AS		 1649 if (adapter->state == __I40EVF_REMOVE)
1650 return;
5eae00c5
GR		 1651 if (adapter->aq_required)
1652 mod_timer(&adapter->watchdog_timer,
1653 jiffies + msecs_to_jiffies(20));
1654 else
1655 mod_timer(&adapter->watchdog_timer, jiffies + (HZ * 2));
5eae00c5
GR		 1656 schedule_work(&adapter->adminq_task);
1657}
1658
67c818a1
MW		 1659#define I40EVF_RESET_WAIT_MS 10
1660#define I40EVF_RESET_WAIT_COUNT 500
5eae00c5
GR		 1661/**
1662 * i40evf_reset_task - Call-back task to handle hardware reset
1663 * @work: pointer to work_struct
1664 *
1665 * During reset we need to shut down and reinitialize the admin queue
1666 * before we can use it to communicate with the PF again. We also clear
1667 * and reinit the rings because that context is lost as well.
1668 **/
1669static void i40evf_reset_task(struct work_struct *work)
1670{
ef8693eb
MW		 1671 struct i40evf_adapter *adapter = container_of(work,
1672 struct i40evf_adapter,
1673 reset_task);
ac833bbf 1674 struct net_device *netdev = adapter->netdev;
5eae00c5 1675 struct i40e_hw *hw = &adapter->hw;
40d01366 1676 struct i40evf_vlan_filter *vlf;
ac833bbf 1677 struct i40evf_mac_filter *f;
ee5c1e92 1678 u32 reg_val;
ac833bbf 1679 int i = 0, err;
5eae00c5
GR		 1680
1681 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
1682 &adapter->crit_section))
f98a2006 1683 usleep_range(500, 1000);
3526d800 1684
67c818a1 1685 i40evf_misc_irq_disable(adapter);
3526d800 1686 if (adapter->flags & I40EVF_FLAG_RESET_NEEDED) {
67c818a1
MW		 1687 adapter->flags &= ~I40EVF_FLAG_RESET_NEEDED;
1688 /* Restart the AQ here. If we have been reset but didn't
1689 * detect it, or if the PF had to reinit, our AQ will be hosed.
1690 */
1691 i40evf_shutdown_adminq(hw);
1692 i40evf_init_adminq(hw);
3526d800
MW		 1693 i40evf_request_reset(adapter);
1694 }
67c818a1 1695 adapter->flags |= I40EVF_FLAG_RESET_PENDING;
3526d800 1696
ef8693eb
MW		 1697 /* poll until we see the reset actually happen */
1698 for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) {
ee5c1e92
MW		 1699 reg_val = rd32(hw, I40E_VF_ARQLEN1) &
1700 I40E_VF_ARQLEN1_ARQENABLE_MASK;
1701 if (!reg_val)
ef8693eb 1702 break;
ee5c1e92 1703 usleep_range(5000, 10000);
ef8693eb
MW		 1704 }
1705 if (i == I40EVF_RESET_WAIT_COUNT) {
67c818a1 1706 dev_info(&adapter->pdev->dev, "Never saw reset\n");
ef8693eb
MW		 1707 goto continue_reset; /* act like the reset happened */
1708 }
5eae00c5 1709
ef8693eb
MW		 1710 /* wait until the reset is complete and the PF is responding to us */
1711 for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) {
ee5c1e92
MW		 1712 reg_val = rd32(hw, I40E_VFGEN_RSTAT) &
1713 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
1714 if (reg_val == I40E_VFR_VFACTIVE)
5eae00c5 1715 break;
c88e38cc 1716 msleep(I40EVF_RESET_WAIT_MS);
5eae00c5 1717 }
509a447a 1718 pci_set_master(adapter->pdev);
67c818a1
MW		 1719 /* extra wait to make sure minimum wait is met */
1720 msleep(I40EVF_RESET_WAIT_MS);
ef8693eb 1721 if (i == I40EVF_RESET_WAIT_COUNT) {
874d1a10 1722 struct i40evf_mac_filter *ftmp;
6ba36a24
MW		 1723 struct i40evf_vlan_filter *fv, *fvtmp;
1724
5eae00c5 1725 /* reset never finished */
80e72893 1726 dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n",
ee5c1e92 1727 reg_val);
ef8693eb
MW		 1728 adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED;
1729
169f4076
MW		 1730 if (netif_running(adapter->netdev)) {
1731 set_bit(__I40E_DOWN, &adapter->vsi.state);
ac833bbf 1732 netif_carrier_off(netdev);
67c818a1
MW		 1733 netif_tx_disable(netdev);
1734 i40evf_napi_disable_all(adapter);
1735 i40evf_irq_disable(adapter);
169f4076
MW		 1736 i40evf_free_traffic_irqs(adapter);
1737 i40evf_free_all_tx_resources(adapter);
1738 i40evf_free_all_rx_resources(adapter);
1739 }
6ba36a24
MW		 1740
1741 /* Delete all of the filters, both MAC and VLAN. */
1742 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list,
1743 list) {
1744 list_del(&f->list);
1745 kfree(f);
1746 }
67c818a1 1747
6ba36a24
MW		 1748 list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list,
1749 list) {
1750 list_del(&fv->list);
1751 kfree(fv);
1752 }
1753
ef8693eb
MW		 1754 i40evf_free_misc_irq(adapter);
1755 i40evf_reset_interrupt_capability(adapter);
1756 i40evf_free_queues(adapter);
d31944d6 1757 i40evf_free_q_vectors(adapter);
ef8693eb
MW		 1758 kfree(adapter->vf_res);
1759 i40evf_shutdown_adminq(hw);
1760 adapter->netdev->flags &= ~IFF_UP;
1761 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
67c818a1 1762 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
9b9344f7 1763 adapter->state = __I40EVF_DOWN;
67c818a1 1764 dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n");
ef8693eb 1765 return; /* Do not attempt to reinit. It's dead, Jim. */
5eae00c5 1766 }
ef8693eb
MW		 1767
1768continue_reset:
3c8e0b98 1769 if (netif_running(adapter->netdev)) {
3c8e0b98 1770 netif_carrier_off(netdev);
67c818a1
MW		 1771 netif_tx_stop_all_queues(netdev);
1772 i40evf_napi_disable_all(adapter);
3c8e0b98 1773 }
67c818a1 1774 i40evf_irq_disable(adapter);
ac833bbf 1775
5eae00c5 1776 adapter->state = __I40EVF_RESETTING;
67c818a1
MW		 1777 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
1778
1779 /* free the Tx/Rx rings and descriptors, might be better to just
1780 * re-use them sometime in the future
1781 */
1782 i40evf_free_all_rx_resources(adapter);
1783 i40evf_free_all_tx_resources(adapter);
5eae00c5
GR		 1784
1785 /* kill and reinit the admin queue */
1786 if (i40evf_shutdown_adminq(hw))
ac833bbf
MW		 1787 dev_warn(&adapter->pdev->dev, "Failed to shut down adminq\n");
1788 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
5eae00c5
GR		 1789 err = i40evf_init_adminq(hw);
1790 if (err)
ac833bbf
MW		 1791 dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n",
1792 err);
5eae00c5 1793
e6d038de
MW		 1794 adapter->aq_required = I40EVF_FLAG_AQ_GET_CONFIG;
1795 adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS;
ac833bbf
MW		 1796
1797 /* re-add all MAC filters */
1798 list_for_each_entry(f, &adapter->mac_filter_list, list) {
1799 f->add = true;
1800 }
1801 /* re-add all VLAN filters */
40d01366
MW		 1802 list_for_each_entry(vlf, &adapter->vlan_filter_list, list) {
1803 vlf->add = true;
ac833bbf 1804 }
e6d038de 1805 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
ac833bbf 1806 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
bf3a178c
AD		 1807 /* Open RDMA Client again */
1808 adapter->aq_required |= I40EVF_FLAG_SERVICE_CLIENT_REQUESTED;
5eae00c5 1809 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
67c818a1 1810 i40evf_misc_irq_enable(adapter);
5eae00c5
GR		 1811
1812 mod_timer(&adapter->watchdog_timer, jiffies + 2);
1813
1814 if (netif_running(adapter->netdev)) {
1815 /* allocate transmit descriptors */
1816 err = i40evf_setup_all_tx_resources(adapter);
1817 if (err)
1818 goto reset_err;
1819
1820 /* allocate receive descriptors */
1821 err = i40evf_setup_all_rx_resources(adapter);
1822 if (err)
1823 goto reset_err;
1824
1825 i40evf_configure(adapter);
1826
1827 err = i40evf_up_complete(adapter);
1828 if (err)
1829 goto reset_err;
1830
1831 i40evf_irq_enable(adapter, true);
67c818a1
MW		 1832 } else {
1833 adapter->state = __I40EVF_DOWN;
5eae00c5 1834 }
67c818a1 1835
5eae00c5
GR		 1836 return;
1837reset_err:
80e72893 1838 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n");
5eae00c5
GR		 1839 i40evf_close(adapter->netdev);
1840}
1841
1842/**
1843 * i40evf_adminq_task - worker thread to clean the admin queue
1844 * @work: pointer to work_struct containing our data
1845 **/
1846static void i40evf_adminq_task(struct work_struct *work)
1847{
1848 struct i40evf_adapter *adapter =
1849 container_of(work, struct i40evf_adapter, adminq_task);
1850 struct i40e_hw *hw = &adapter->hw;
1851 struct i40e_arq_event_info event;
1852 struct i40e_virtchnl_msg *v_msg;
1853 i40e_status ret;
912257e5 1854 u32 val, oldval;
5eae00c5
GR		 1855 u16 pending;
1856
ef8693eb 1857 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED)
7235448c 1858 goto out;
ef8693eb 1859
1001dc37
MW		 1860 event.buf_len = I40EVF_MAX_AQ_BUF_SIZE;
1861 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
249c8b8d 1862 if (!event.msg_buf)
7235448c 1863 goto out;
249c8b8d 1864
5eae00c5
GR		 1865 v_msg = (struct i40e_virtchnl_msg *)&event.desc;
1866 do {
1867 ret = i40evf_clean_arq_element(hw, &event, &pending);
8b011ebb 1868 if (ret || !v_msg->v_opcode)
5eae00c5
GR		 1869 break; /* No event to process or error cleaning ARQ */
1870
1871 i40evf_virtchnl_completion(adapter, v_msg->v_opcode,
1872 v_msg->v_retval, event.msg_buf,
1001dc37 1873 event.msg_len);
75a64435 1874 if (pending != 0)
5eae00c5 1875 memset(event.msg_buf, 0, I40EVF_MAX_AQ_BUF_SIZE);
5eae00c5
GR		 1876 } while (pending);
1877
67c818a1
MW		 1878 if ((adapter->flags &
1879 (I40EVF_FLAG_RESET_PENDING | I40EVF_FLAG_RESET_NEEDED)) ||
1880 adapter->state == __I40EVF_RESETTING)
1881 goto freedom;
1882
912257e5
MW		 1883 /* check for error indications */
1884 val = rd32(hw, hw->aq.arq.len);
19b73d8e
MW		 1885 if (val == 0xdeadbeef) /* indicates device in reset */
1886 goto freedom;
912257e5 1887 oldval = val;
b1f3366b 1888 if (val & I40E_VF_ARQLEN1_ARQVFE_MASK) {
912257e5 1889 dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n");
b1f3366b 1890 val &= ~I40E_VF_ARQLEN1_ARQVFE_MASK;
912257e5 1891 }
b1f3366b 1892 if (val & I40E_VF_ARQLEN1_ARQOVFL_MASK) {
912257e5 1893 dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n");
b1f3366b 1894 val &= ~I40E_VF_ARQLEN1_ARQOVFL_MASK;
912257e5 1895 }
b1f3366b 1896 if (val & I40E_VF_ARQLEN1_ARQCRIT_MASK) {
912257e5 1897 dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n");
b1f3366b 1898 val &= ~I40E_VF_ARQLEN1_ARQCRIT_MASK;
912257e5
MW		 1899 }
1900 if (oldval != val)
1901 wr32(hw, hw->aq.arq.len, val);
1902
1903 val = rd32(hw, hw->aq.asq.len);
1904 oldval = val;
b1f3366b 1905 if (val & I40E_VF_ATQLEN1_ATQVFE_MASK) {
912257e5 1906 dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n");
b1f3366b 1907 val &= ~I40E_VF_ATQLEN1_ATQVFE_MASK;
912257e5 1908 }
b1f3366b 1909 if (val & I40E_VF_ATQLEN1_ATQOVFL_MASK) {
912257e5 1910 dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n");
b1f3366b 1911 val &= ~I40E_VF_ATQLEN1_ATQOVFL_MASK;
912257e5 1912 }
b1f3366b 1913 if (val & I40E_VF_ATQLEN1_ATQCRIT_MASK) {
912257e5 1914 dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n");
b1f3366b 1915 val &= ~I40E_VF_ATQLEN1_ATQCRIT_MASK;
912257e5
MW		 1916 }
1917 if (oldval != val)
1918 wr32(hw, hw->aq.asq.len, val);
1919
67c818a1 1920freedom:
7235448c
MW		 1921 kfree(event.msg_buf);
1922out:
5eae00c5
GR		 1923 /* re-enable Admin queue interrupt cause */
1924 i40evf_misc_irq_enable(adapter);
5eae00c5
GR		 1925}
1926
1927/**
1928 * i40evf_free_all_tx_resources - Free Tx Resources for All Queues
1929 * @adapter: board private structure
1930 *
1931 * Free all transmit software resources
1932 **/
e284fc88 1933void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter)
5eae00c5
GR		 1934{
1935 int i;
1936
fdb47ae8
MW		 1937 if (!adapter->tx_rings)
1938 return;
1939
cc052927 1940 for (i = 0; i < adapter->num_active_queues; i++)
0dd438d8
MW		 1941 if (adapter->tx_rings[i].desc)
1942 i40evf_free_tx_resources(&adapter->tx_rings[i]);
5eae00c5
GR		 1943}
1944
1945/**
1946 * i40evf_setup_all_tx_resources - allocate all queues Tx resources
1947 * @adapter: board private structure
1948 *
1949 * If this function returns with an error, then it's possible one or
1950 * more of the rings is populated (while the rest are not). It is the
1951 * callers duty to clean those orphaned rings.
1952 *
1953 * Return 0 on success, negative on failure
1954 **/
1955static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter)
1956{
1957 int i, err = 0;
1958
cc052927 1959 for (i = 0; i < adapter->num_active_queues; i++) {
0dd438d8
MW		 1960 adapter->tx_rings[i].count = adapter->tx_desc_count;
1961 err = i40evf_setup_tx_descriptors(&adapter->tx_rings[i]);
5eae00c5
GR		 1962 if (!err)
1963 continue;
1964 dev_err(&adapter->pdev->dev,
fb43201f 1965 "Allocation for Tx Queue %u failed\n", i);
5eae00c5
GR		 1966 break;
1967 }
1968
1969 return err;
1970}
1971
1972/**
1973 * i40evf_setup_all_rx_resources - allocate all queues Rx resources
1974 * @adapter: board private structure
1975 *
1976 * If this function returns with an error, then it's possible one or
1977 * more of the rings is populated (while the rest are not). It is the
1978 * callers duty to clean those orphaned rings.
1979 *
1980 * Return 0 on success, negative on failure
1981 **/
1982static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter)
1983{
1984 int i, err = 0;
1985
cc052927 1986 for (i = 0; i < adapter->num_active_queues; i++) {
0dd438d8
MW		 1987 adapter->rx_rings[i].count = adapter->rx_desc_count;
1988 err = i40evf_setup_rx_descriptors(&adapter->rx_rings[i]);
5eae00c5
GR		 1989 if (!err)
1990 continue;
1991 dev_err(&adapter->pdev->dev,
fb43201f 1992 "Allocation for Rx Queue %u failed\n", i);
5eae00c5
GR		 1993 break;
1994 }
1995 return err;
1996}
1997
1998/**
1999 * i40evf_free_all_rx_resources - Free Rx Resources for All Queues
2000 * @adapter: board private structure
2001 *
2002 * Free all receive software resources
2003 **/
e284fc88 2004void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter)
5eae00c5
GR		 2005{
2006 int i;
2007
fdb47ae8
MW		 2008 if (!adapter->rx_rings)
2009 return;
2010
cc052927 2011 for (i = 0; i < adapter->num_active_queues; i++)
0dd438d8
MW		 2012 if (adapter->rx_rings[i].desc)
2013 i40evf_free_rx_resources(&adapter->rx_rings[i]);
5eae00c5
GR		 2014}
2015
2016/**
2017 * i40evf_open - Called when a network interface is made active
2018 * @netdev: network interface device structure
2019 *
2020 * Returns 0 on success, negative value on failure
2021 *
2022 * The open entry point is called when a network interface is made
2023 * active by the system (IFF_UP). At this point all resources needed
2024 * for transmit and receive operations are allocated, the interrupt
2025 * handler is registered with the OS, the watchdog timer is started,
2026 * and the stack is notified that the interface is ready.
2027 **/
2028static int i40evf_open(struct net_device *netdev)
2029{
2030 struct i40evf_adapter *adapter = netdev_priv(netdev);
2031 int err;
2032
ef8693eb
MW		 2033 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) {
2034 dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n");
2035 return -EIO;
2036 }
209dc4da
MW		 2037
2038 if (adapter->state != __I40EVF_DOWN)
5eae00c5
GR		 2039 return -EBUSY;
2040
2041 /* allocate transmit descriptors */
2042 err = i40evf_setup_all_tx_resources(adapter);
2043 if (err)
2044 goto err_setup_tx;
2045
2046 /* allocate receive descriptors */
2047 err = i40evf_setup_all_rx_resources(adapter);
2048 if (err)
2049 goto err_setup_rx;
2050
2051 /* clear any pending interrupts, may auto mask */
2052 err = i40evf_request_traffic_irqs(adapter, netdev->name);
2053 if (err)
2054 goto err_req_irq;
2055
44151cd3 2056 i40evf_add_filter(adapter, adapter->hw.mac.addr);
5eae00c5
GR		 2057 i40evf_configure(adapter);
2058
2059 err = i40evf_up_complete(adapter);
2060 if (err)
2061 goto err_req_irq;
2062
2063 i40evf_irq_enable(adapter, true);
2064
2065 return 0;
2066
2067err_req_irq:
2068 i40evf_down(adapter);
2069 i40evf_free_traffic_irqs(adapter);
2070err_setup_rx:
2071 i40evf_free_all_rx_resources(adapter);
2072err_setup_tx:
2073 i40evf_free_all_tx_resources(adapter);
2074
2075 return err;
2076}
2077
2078/**
2079 * i40evf_close - Disables a network interface
2080 * @netdev: network interface device structure
2081 *
2082 * Returns 0, this is not allowed to fail
2083 *
2084 * The close entry point is called when an interface is de-activated
2085 * by the OS. The hardware is still under the drivers control, but
2086 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue)
2087 * are freed, along with all transmit and receive resources.
2088 **/
2089static int i40evf_close(struct net_device *netdev)
2090{
2091 struct i40evf_adapter *adapter = netdev_priv(netdev);
2092
209dc4da 2093 if (adapter->state <= __I40EVF_DOWN_PENDING)
ef8693eb
MW		 2094 return 0;
2095
ef8693eb 2096
5eae00c5
GR		 2097 set_bit(__I40E_DOWN, &adapter->vsi.state);
2098
2099 i40evf_down(adapter);
209dc4da 2100 adapter->state = __I40EVF_DOWN_PENDING;
5eae00c5
GR		 2101 i40evf_free_traffic_irqs(adapter);
2102
5eae00c5
GR		 2103 return 0;
2104}
2105
2106/**
2107 * i40evf_get_stats - Get System Network Statistics
2108 * @netdev: network interface device structure
2109 *
2110 * Returns the address of the device statistics structure.
2111 * The statistics are actually updated from the timer callback.
2112 **/
2113static struct net_device_stats *i40evf_get_stats(struct net_device *netdev)
2114{
2115 struct i40evf_adapter *adapter = netdev_priv(netdev);
2116
2117 /* only return the current stats */
2118 return &adapter->net_stats;
2119}
2120
5eae00c5
GR		 2121/**
2122 * i40evf_change_mtu - Change the Maximum Transfer Unit
2123 * @netdev: network interface device structure
2124 * @new_mtu: new value for maximum frame size
2125 *
2126 * Returns 0 on success, negative on failure
2127 **/
2128static int i40evf_change_mtu(struct net_device *netdev, int new_mtu)
2129{
2130 struct i40evf_adapter *adapter = netdev_priv(netdev);
2131 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
2132
2133 if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2134 return -EINVAL;
2135
5eae00c5 2136 netdev->mtu = new_mtu;
67c818a1
MW		 2137 adapter->flags |= I40EVF_FLAG_RESET_NEEDED;
2138 schedule_work(&adapter->reset_task);
2139
5eae00c5
GR		 2140 return 0;
2141}
2142
c4445aed
MW		 2143#define I40EVF_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_TX |\
2144 NETIF_F_HW_VLAN_CTAG_RX |\
2145 NETIF_F_HW_VLAN_CTAG_FILTER)
2146
2147/**
2148 * i40evf_fix_features - fix up the netdev feature bits
2149 * @netdev: our net device
2150 * @features: desired feature bits
2151 *
2152 * Returns fixed-up features bits
2153 **/
2154static netdev_features_t i40evf_fix_features(struct net_device *netdev,
2155 netdev_features_t features)
2156{
2157 struct i40evf_adapter *adapter = netdev_priv(netdev);
2158
2159 features &= ~I40EVF_VLAN_FEATURES;
2160 if (adapter->vf_res->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_VLAN)
2161 features |= I40EVF_VLAN_FEATURES;
2162 return features;
2163}
2164
5eae00c5
GR		 2165static const struct net_device_ops i40evf_netdev_ops = {
2166 .ndo_open = i40evf_open,
2167 .ndo_stop = i40evf_close,
2168 .ndo_start_xmit = i40evf_xmit_frame,
2169 .ndo_get_stats = i40evf_get_stats,
2170 .ndo_set_rx_mode = i40evf_set_rx_mode,
2171 .ndo_validate_addr = eth_validate_addr,
2172 .ndo_set_mac_address = i40evf_set_mac,
2173 .ndo_change_mtu = i40evf_change_mtu,
2174 .ndo_tx_timeout = i40evf_tx_timeout,
2175 .ndo_vlan_rx_add_vid = i40evf_vlan_rx_add_vid,
2176 .ndo_vlan_rx_kill_vid = i40evf_vlan_rx_kill_vid,
c4445aed 2177 .ndo_fix_features = i40evf_fix_features,
7709b4c1
AD		 2178#ifdef CONFIG_NET_POLL_CONTROLLER
2179 .ndo_poll_controller = i40evf_netpoll,
2180#endif
5eae00c5
GR		 2181};
2182
2183/**
2184 * i40evf_check_reset_complete - check that VF reset is complete
2185 * @hw: pointer to hw struct
2186 *
2187 * Returns 0 if device is ready to use, or -EBUSY if it's in reset.
2188 **/
2189static int i40evf_check_reset_complete(struct i40e_hw *hw)
2190{
2191 u32 rstat;
2192 int i;
2193
2194 for (i = 0; i < 100; i++) {
fd35886a
AS		 2195 rstat = rd32(hw, I40E_VFGEN_RSTAT) &
2196 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
2197 if ((rstat == I40E_VFR_VFACTIVE) ||
2198 (rstat == I40E_VFR_COMPLETED))
5eae00c5 2199 return 0;
f98a2006 2200 usleep_range(10, 20);
5eae00c5
GR		 2201 }
2202 return -EBUSY;
2203}
2204
e6d038de
MW		 2205/**
2206 * i40evf_process_config - Process the config information we got from the PF
2207 * @adapter: board private structure
2208 *
2209 * Verify that we have a valid config struct, and set up our netdev features
2210 * and our VSI struct.
2211 **/
2212int i40evf_process_config(struct i40evf_adapter *adapter)
2213{
ba6cc7f6 2214 struct i40e_virtchnl_vf_resource *vfres = adapter->vf_res;
e6d038de 2215 struct net_device *netdev = adapter->netdev;
43a3d9ba 2216 struct i40e_vsi *vsi = &adapter->vsi;
e6d038de
MW		 2217 int i;
2218
2219 /* got VF config message back from PF, now we can parse it */
ba6cc7f6
MW		 2220 for (i = 0; i < vfres->num_vsis; i++) {
2221 if (vfres->vsi_res[i].vsi_type == I40E_VSI_SRIOV)
2222 adapter->vsi_res = &vfres->vsi_res[i];
e6d038de
MW		 2223 }
2224 if (!adapter->vsi_res) {
2225 dev_err(&adapter->pdev->dev, "No LAN VSI found\n");
2226 return -ENODEV;
2227 }
2228
b0fe3306
AD		 2229 netdev->hw_enc_features |= NETIF_F_SG |
2230 NETIF_F_IP_CSUM |
2231 NETIF_F_IPV6_CSUM |
2232 NETIF_F_HIGHDMA |
2233 NETIF_F_SOFT_FEATURES |
2234 NETIF_F_TSO |
2235 NETIF_F_TSO_ECN |
2236 NETIF_F_TSO6 |
2237 NETIF_F_GSO_GRE |
1c7b4a23 2238 NETIF_F_GSO_GRE_CSUM |
7e13318d 2239 NETIF_F_GSO_IPXIP4 |
bf2d1df3 2240 NETIF_F_GSO_IPXIP6 |
b0fe3306
AD		 2241 NETIF_F_GSO_UDP_TUNNEL |
2242 NETIF_F_GSO_UDP_TUNNEL_CSUM |
1c7b4a23 2243 NETIF_F_GSO_PARTIAL |
b0fe3306
AD		 2244 NETIF_F_SCTP_CRC |
2245 NETIF_F_RXHASH |
2246 NETIF_F_RXCSUM |
2247 0;
2248
2249 if (!(adapter->flags & I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE))
1c7b4a23
AD		 2250 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
2251
2252 netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
b0fe3306
AD		 2253
2254 /* record features VLANs can make use of */
1c7b4a23
AD		 2255 netdev->vlan_features |= netdev->hw_enc_features |
2256 NETIF_F_TSO_MANGLEID;
b0fe3306
AD		 2257
2258 /* Write features and hw_features separately to avoid polluting
2259 * with, or dropping, features that are set when we registgered.
2260 */
2261 netdev->hw_features |= netdev->hw_enc_features;
2262
2263 netdev->features |= netdev->hw_enc_features | I40EVF_VLAN_FEATURES;
1c7b4a23 2264 netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
b0fe3306
AD		 2265
2266 /* disable VLAN features if not supported */
2267 if (!(vfres->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_VLAN))
2268 netdev->features ^= I40EVF_VLAN_FEATURES;
e6d038de
MW		 2269
2270 adapter->vsi.id = adapter->vsi_res->vsi_id;
2271
2272 adapter->vsi.back = adapter;
2273 adapter->vsi.base_vector = 1;
2274 adapter->vsi.work_limit = I40E_DEFAULT_IRQ_WORK;
2275 adapter->vsi.rx_itr_setting = (I40E_ITR_DYNAMIC |
2276 ITR_REG_TO_USEC(I40E_ITR_RX_DEF));
2277 adapter->vsi.tx_itr_setting = (I40E_ITR_DYNAMIC |
2278 ITR_REG_TO_USEC(I40E_ITR_TX_DEF));
43a3d9ba
MW		 2279 vsi->netdev = adapter->netdev;
2280 vsi->qs_handle = adapter->vsi_res->qset_handle;
2281 if (vfres->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_RSS_PF) {
2282 adapter->rss_key_size = vfres->rss_key_size;
2283 adapter->rss_lut_size = vfres->rss_lut_size;
2284 } else {
2285 adapter->rss_key_size = I40EVF_HKEY_ARRAY_SIZE;
2286 adapter->rss_lut_size = I40EVF_HLUT_ARRAY_SIZE;
2287 }
2288
e6d038de
MW		 2289 return 0;
2290}
2291
5eae00c5
GR		 2292/**
2293 * i40evf_init_task - worker thread to perform delayed initialization
2294 * @work: pointer to work_struct containing our data
2295 *
2296 * This task completes the work that was begun in probe. Due to the nature
2297 * of VF-PF communications, we may need to wait tens of milliseconds to get
dbedd44e 2298 * responses back from the PF. Rather than busy-wait in probe and bog down the
5eae00c5
GR		 2299 * whole system, we'll do it in a task so we can sleep.
2300 * This task only runs during driver init. Once we've established
2301 * communications with the PF driver and set up our netdev, the watchdog
2302 * takes over.
2303 **/
2304static void i40evf_init_task(struct work_struct *work)
2305{
2306 struct i40evf_adapter *adapter = container_of(work,
2307 struct i40evf_adapter,
2308 init_task.work);
2309 struct net_device *netdev = adapter->netdev;
5eae00c5
GR		 2310 struct i40e_hw *hw = &adapter->hw;
2311 struct pci_dev *pdev = adapter->pdev;
e6d038de 2312 int err, bufsz;
5eae00c5
GR		 2313
2314 switch (adapter->state) {
2315 case __I40EVF_STARTUP:
2316 /* driver loaded, probe complete */
ef8693eb
MW		 2317 adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED;
2318 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
5eae00c5
GR		 2319 err = i40e_set_mac_type(hw);
2320 if (err) {
c2a137cb
MW		 2321 dev_err(&pdev->dev, "Failed to set MAC type (%d)\n",
2322 err);
2619ef47 2323 goto err;
5eae00c5
GR		 2324 }
2325 err = i40evf_check_reset_complete(hw);
2326 if (err) {
0d9c7ea8 2327 dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n",
75a64435 2328 err);
5eae00c5
GR		 2329 goto err;
2330 }
2331 hw->aq.num_arq_entries = I40EVF_AQ_LEN;
2332 hw->aq.num_asq_entries = I40EVF_AQ_LEN;
2333 hw->aq.arq_buf_size = I40EVF_MAX_AQ_BUF_SIZE;
2334 hw->aq.asq_buf_size = I40EVF_MAX_AQ_BUF_SIZE;
2335
2336 err = i40evf_init_adminq(hw);
2337 if (err) {
c2a137cb
MW		 2338 dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n",
2339 err);
5eae00c5
GR		 2340 goto err;
2341 }
2342 err = i40evf_send_api_ver(adapter);
2343 if (err) {
10bdd67b 2344 dev_err(&pdev->dev, "Unable to send to PF (%d)\n", err);
5eae00c5
GR		 2345 i40evf_shutdown_adminq(hw);
2346 goto err;
2347 }
2348 adapter->state = __I40EVF_INIT_VERSION_CHECK;
2349 goto restart;
5eae00c5 2350 case __I40EVF_INIT_VERSION_CHECK:
10bdd67b 2351 if (!i40evf_asq_done(hw)) {
80e72893 2352 dev_err(&pdev->dev, "Admin queue command never completed\n");
906a6937
MW		 2353 i40evf_shutdown_adminq(hw);
2354 adapter->state = __I40EVF_STARTUP;
5eae00c5 2355 goto err;
10bdd67b 2356 }
5eae00c5
GR		 2357
2358 /* aq msg sent, awaiting reply */
2359 err = i40evf_verify_api_ver(adapter);
2360 if (err) {
d4f82fd3 2361 if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK)
56f9920a 2362 err = i40evf_send_api_ver(adapter);
ee1693e5
MW		 2363 else
2364 dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n",
2365 adapter->pf_version.major,
2366 adapter->pf_version.minor,
2367 I40E_VIRTCHNL_VERSION_MAJOR,
2368 I40E_VIRTCHNL_VERSION_MINOR);
5eae00c5
GR		 2369 goto err;
2370 }
2371 err = i40evf_send_vf_config_msg(adapter);
2372 if (err) {
3f2ab172 2373 dev_err(&pdev->dev, "Unable to send config request (%d)\n",
5eae00c5
GR		 2374 err);
2375 goto err;
2376 }
2377 adapter->state = __I40EVF_INIT_GET_RESOURCES;
2378 goto restart;
5eae00c5
GR		 2379 case __I40EVF_INIT_GET_RESOURCES:
2380 /* aq msg sent, awaiting reply */
2381 if (!adapter->vf_res) {
2382 bufsz = sizeof(struct i40e_virtchnl_vf_resource) +
2383 (I40E_MAX_VF_VSI *
2384 sizeof(struct i40e_virtchnl_vsi_resource));
2385 adapter->vf_res = kzalloc(bufsz, GFP_KERNEL);
c2a137cb 2386 if (!adapter->vf_res)
5eae00c5 2387 goto err;
5eae00c5
GR		 2388 }
2389 err = i40evf_get_vf_config(adapter);
906a6937 2390 if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
906a6937
MW		 2391 err = i40evf_send_vf_config_msg(adapter);
2392 goto err;
e743072f
MW		 2393 } else if (err == I40E_ERR_PARAM) {
2394 /* We only get ERR_PARAM if the device is in a very bad
2395 * state or if we've been disabled for previous bad
2396 * behavior. Either way, we're done now.
2397 */
2398 i40evf_shutdown_adminq(hw);
2399 dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n");
2400 return;
906a6937 2401 }
5eae00c5 2402 if (err) {
c2a137cb
MW		 2403 dev_err(&pdev->dev, "Unable to get VF config (%d)\n",
2404 err);
5eae00c5
GR		 2405 goto err_alloc;
2406 }
2407 adapter->state = __I40EVF_INIT_SW;
2408 break;
2409 default:
2410 goto err_alloc;
2411 }
f608e6a6
AD		 2412
2413 if (hw->mac.type == I40E_MAC_X722_VF)
2414 adapter->flags |= I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE;
2415
e6d038de 2416 if (i40evf_process_config(adapter))
5eae00c5 2417 goto err_alloc;
e6d038de 2418 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
5eae00c5
GR		 2419
2420 adapter->flags |= I40EVF_FLAG_RX_CSUM_ENABLED;
2421
5eae00c5
GR		 2422 netdev->netdev_ops = &i40evf_netdev_ops;
2423 i40evf_set_ethtool_ops(netdev);
2424 netdev->watchdog_timeo = 5 * HZ;
3415e8ce 2425
5eae00c5 2426 if (!is_valid_ether_addr(adapter->hw.mac.addr)) {
b34f90e7 2427 dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n",
c2a137cb 2428 adapter->hw.mac.addr);
14e52ee2
MW		 2429 eth_hw_addr_random(netdev);
2430 ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr);
2431 } else {
2432 adapter->flags |= I40EVF_FLAG_ADDR_SET_BY_PF;
2433 ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr);
2434 ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr);
5eae00c5 2435 }
5eae00c5 2436
5eae00c5
GR		 2437 init_timer(&adapter->watchdog_timer);
2438 adapter->watchdog_timer.function = &i40evf_watchdog_timer;
2439 adapter->watchdog_timer.data = (unsigned long)adapter;
2440 mod_timer(&adapter->watchdog_timer, jiffies + 1);
2441
cc052927
MW		 2442 adapter->num_active_queues = min_t(int,
2443 adapter->vsi_res->num_queue_pairs,
2444 (int)(num_online_cpus()));
d732a184
MW		 2445 adapter->tx_desc_count = I40EVF_DEFAULT_TXD;
2446 adapter->rx_desc_count = I40EVF_DEFAULT_RXD;
5eae00c5
GR		 2447 err = i40evf_init_interrupt_scheme(adapter);
2448 if (err)
2449 goto err_sw_init;
2450 i40evf_map_rings_to_vectors(adapter);
f6d83d13
ASJ		 2451 if (adapter->vf_res->vf_offload_flags &
2452 I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2453 adapter->flags |= I40EVF_FLAG_WB_ON_ITR_CAPABLE;
2454
5eae00c5
GR		 2455 err = i40evf_request_misc_irq(adapter);
2456 if (err)
2457 goto err_sw_init;
2458
2459 netif_carrier_off(netdev);
2460
ef8693eb
MW		 2461 if (!adapter->netdev_registered) {
2462 err = register_netdev(netdev);
2463 if (err)
2464 goto err_register;
2465 }
5eae00c5
GR		 2466
2467 adapter->netdev_registered = true;
2468
2469 netif_tx_stop_all_queues(netdev);
2470
b34f90e7 2471 dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr);
5eae00c5
GR		 2472 if (netdev->features & NETIF_F_GRO)
2473 dev_info(&pdev->dev, "GRO is enabled\n");
2474
5eae00c5
GR		 2475 adapter->state = __I40EVF_DOWN;
2476 set_bit(__I40E_DOWN, &adapter->vsi.state);
2477 i40evf_misc_irq_enable(adapter);
e25d00b8 2478
43a3d9ba
MW		 2479 adapter->rss_key = kzalloc(adapter->rss_key_size, GFP_KERNEL);
2480 adapter->rss_lut = kzalloc(adapter->rss_lut_size, GFP_KERNEL);
2481 if (!adapter->rss_key || !adapter->rss_lut)
2482 goto err_mem;
2483
e25d00b8
ASJ		 2484 if (RSS_AQ(adapter)) {
2485 adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_RSS;
2486 mod_timer_pending(&adapter->watchdog_timer, jiffies + 1);
2487 } else {
96a81986 2488 i40evf_init_rss(adapter);
e25d00b8 2489 }
5eae00c5
GR		 2490 return;
2491restart:
3f7e5c33 2492 schedule_delayed_work(&adapter->init_task, msecs_to_jiffies(30));
5eae00c5 2493 return;
43a3d9ba
MW		 2494err_mem:
2495 i40evf_free_rss(adapter);
5eae00c5
GR		 2496err_register:
2497 i40evf_free_misc_irq(adapter);
2498err_sw_init:
2499 i40evf_reset_interrupt_capability(adapter);
5eae00c5
GR		 2500err_alloc:
2501 kfree(adapter->vf_res);
2502 adapter->vf_res = NULL;
2503err:
2504 /* Things went into the weeds, so try again later */
2505 if (++adapter->aq_wait_count > I40EVF_AQ_MAX_ERR) {
b9029e94 2506 dev_err(&pdev->dev, "Failed to communicate with PF; waiting before retry\n");
ef8693eb 2507 adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED;
b9029e94
MW		 2508 i40evf_shutdown_adminq(hw);
2509 adapter->state = __I40EVF_STARTUP;
2510 schedule_delayed_work(&adapter->init_task, HZ * 5);
2511 return;
5eae00c5 2512 }
3f7e5c33 2513 schedule_delayed_work(&adapter->init_task, HZ);
5eae00c5
GR		 2514}
2515
2516/**
2517 * i40evf_shutdown - Shutdown the device in preparation for a reboot
2518 * @pdev: pci device structure
2519 **/
2520static void i40evf_shutdown(struct pci_dev *pdev)
2521{
2522 struct net_device *netdev = pci_get_drvdata(pdev);
00293fdc 2523 struct i40evf_adapter *adapter = netdev_priv(netdev);
5eae00c5
GR		 2524
2525 netif_device_detach(netdev);
2526
2527 if (netif_running(netdev))
2528 i40evf_close(netdev);
2529
00293fdc
MW		 2530 /* Prevent the watchdog from running. */
2531 adapter->state = __I40EVF_REMOVE;
2532 adapter->aq_required = 0;
00293fdc 2533
5eae00c5
GR		 2534#ifdef CONFIG_PM
2535 pci_save_state(pdev);
2536
2537#endif
2538 pci_disable_device(pdev);
2539}
2540
2541/**
2542 * i40evf_probe - Device Initialization Routine
2543 * @pdev: PCI device information struct
2544 * @ent: entry in i40evf_pci_tbl
2545 *
2546 * Returns 0 on success, negative on failure
2547 *
2548 * i40evf_probe initializes an adapter identified by a pci_dev structure.
2549 * The OS initialization, configuring of the adapter private structure,
2550 * and a hardware reset occur.
2551 **/
2552static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2553{
2554 struct net_device *netdev;
2555 struct i40evf_adapter *adapter = NULL;
2556 struct i40e_hw *hw = NULL;
dbbd8111 2557 int err;
5eae00c5
GR		 2558
2559 err = pci_enable_device(pdev);
2560 if (err)
2561 return err;
2562
6494294f 2563 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
6494294f 2564 if (err) {
e3e3bfdd
JS		 2565 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
2566 if (err) {
2567 dev_err(&pdev->dev,
2568 "DMA configuration failed: 0x%x\n", err);
2569 goto err_dma;
2570 }
5eae00c5
GR		 2571 }
2572
2573 err = pci_request_regions(pdev, i40evf_driver_name);
2574 if (err) {
2575 dev_err(&pdev->dev,
2576 "pci_request_regions failed 0x%x\n", err);
2577 goto err_pci_reg;
2578 }
2579
2580 pci_enable_pcie_error_reporting(pdev);
2581
2582 pci_set_master(pdev);
2583
1255b7a1 2584 netdev = alloc_etherdev_mq(sizeof(struct i40evf_adapter), MAX_QUEUES);
5eae00c5
GR		 2585 if (!netdev) {
2586 err = -ENOMEM;
2587 goto err_alloc_etherdev;
2588 }
2589
2590 SET_NETDEV_DEV(netdev, &pdev->dev);
2591
2592 pci_set_drvdata(pdev, netdev);
2593 adapter = netdev_priv(netdev);
5eae00c5
GR		 2594
2595 adapter->netdev = netdev;
2596 adapter->pdev = pdev;
2597
2598 hw = &adapter->hw;
2599 hw->back = adapter;
2600
41a1d04b 2601 adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
5eae00c5
GR		 2602 adapter->state = __I40EVF_STARTUP;
2603
2604 /* Call save state here because it relies on the adapter struct. */
2605 pci_save_state(pdev);
2606
2607 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
2608 pci_resource_len(pdev, 0));
2609 if (!hw->hw_addr) {
2610 err = -EIO;
2611 goto err_ioremap;
2612 }
2613 hw->vendor_id = pdev->vendor;
2614 hw->device_id = pdev->device;
2615 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
2616 hw->subsystem_vendor_id = pdev->subsystem_vendor;
2617 hw->subsystem_device_id = pdev->subsystem_device;
2618 hw->bus.device = PCI_SLOT(pdev->devfn);
2619 hw->bus.func = PCI_FUNC(pdev->devfn);
2620
8ddb3326
JB		 2621 /* set up the locks for the AQ, do this only once in probe
2622 * and destroy them only once in remove
2623 */
2624 mutex_init(&hw->aq.asq_mutex);
2625 mutex_init(&hw->aq.arq_mutex);
2626
8bb1a540
SK		 2627 INIT_LIST_HEAD(&adapter->mac_filter_list);
2628 INIT_LIST_HEAD(&adapter->vlan_filter_list);
2629
5eae00c5
GR		 2630 INIT_WORK(&adapter->reset_task, i40evf_reset_task);
2631 INIT_WORK(&adapter->adminq_task, i40evf_adminq_task);
2632 INIT_WORK(&adapter->watchdog_task, i40evf_watchdog_task);
2633 INIT_DELAYED_WORK(&adapter->init_task, i40evf_init_task);
9b32b0b5
MW		 2634 schedule_delayed_work(&adapter->init_task,
2635 msecs_to_jiffies(5 * (pdev->devfn & 0x07)));
5eae00c5
GR		 2636
2637 return 0;
2638
2639err_ioremap:
2640 free_netdev(netdev);
2641err_alloc_etherdev:
2642 pci_release_regions(pdev);
2643err_pci_reg:
2644err_dma:
2645 pci_disable_device(pdev);
2646 return err;
2647}
2648
2649#ifdef CONFIG_PM
2650/**
2651 * i40evf_suspend - Power management suspend routine
2652 * @pdev: PCI device information struct
2653 * @state: unused
2654 *
2655 * Called when the system (VM) is entering sleep/suspend.
2656 **/
2657static int i40evf_suspend(struct pci_dev *pdev, pm_message_t state)
2658{
2659 struct net_device *netdev = pci_get_drvdata(pdev);
2660 struct i40evf_adapter *adapter = netdev_priv(netdev);
2661 int retval = 0;
2662
2663 netif_device_detach(netdev);
2664
2665 if (netif_running(netdev)) {
2666 rtnl_lock();
2667 i40evf_down(adapter);
2668 rtnl_unlock();
2669 }
2670 i40evf_free_misc_irq(adapter);
2671 i40evf_reset_interrupt_capability(adapter);
2672
2673 retval = pci_save_state(pdev);
2674 if (retval)
2675 return retval;
2676
2677 pci_disable_device(pdev);
2678
2679 return 0;
2680}
2681
2682/**
dbedd44e 2683 * i40evf_resume - Power management resume routine
5eae00c5
GR		 2684 * @pdev: PCI device information struct
2685 *
2686 * Called when the system (VM) is resumed from sleep/suspend.
2687 **/
2688static int i40evf_resume(struct pci_dev *pdev)
2689{
2690 struct i40evf_adapter *adapter = pci_get_drvdata(pdev);
2691 struct net_device *netdev = adapter->netdev;
2692 u32 err;
2693
2694 pci_set_power_state(pdev, PCI_D0);
2695 pci_restore_state(pdev);
2696 /* pci_restore_state clears dev->state_saved so call
2697 * pci_save_state to restore it.
2698 */
2699 pci_save_state(pdev);
2700
2701 err = pci_enable_device_mem(pdev);
2702 if (err) {
2703 dev_err(&pdev->dev, "Cannot enable PCI device from suspend.\n");
2704 return err;
2705 }
2706 pci_set_master(pdev);
2707
2708 rtnl_lock();
2709 err = i40evf_set_interrupt_capability(adapter);
2710 if (err) {
f2a1c368 2711 rtnl_unlock();
5eae00c5
GR		 2712 dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n");
2713 return err;
2714 }
2715 err = i40evf_request_misc_irq(adapter);
2716 rtnl_unlock();
2717 if (err) {
2718 dev_err(&pdev->dev, "Cannot get interrupt vector.\n");
2719 return err;
2720 }
2721
2722 schedule_work(&adapter->reset_task);
2723
2724 netif_device_attach(netdev);
2725
2726 return err;
2727}
2728
2729#endif /* CONFIG_PM */
2730/**
2731 * i40evf_remove - Device Removal Routine
2732 * @pdev: PCI device information struct
2733 *
2734 * i40evf_remove is called by the PCI subsystem to alert the driver
2735 * that it should release a PCI device. The could be caused by a
2736 * Hot-Plug event, or because the driver is going to be removed from
2737 * memory.
2738 **/
2739static void i40evf_remove(struct pci_dev *pdev)
2740{
2741 struct net_device *netdev = pci_get_drvdata(pdev);
2742 struct i40evf_adapter *adapter = netdev_priv(netdev);
6ba36a24 2743 struct i40evf_mac_filter *f, *ftmp;
5eae00c5
GR		 2744 struct i40e_hw *hw = &adapter->hw;
2745
2746 cancel_delayed_work_sync(&adapter->init_task);
ef8693eb 2747 cancel_work_sync(&adapter->reset_task);
5eae00c5
GR		 2748
2749 if (adapter->netdev_registered) {
2750 unregister_netdev(netdev);
2751 adapter->netdev_registered = false;
2752 }
53d0b3ae 2753
f4a71881 2754 /* Shut down all the garbage mashers on the detention level */
5eae00c5 2755 adapter->state = __I40EVF_REMOVE;
f4a71881 2756 adapter->aq_required = 0;
f4a71881 2757 i40evf_request_reset(adapter);
22ead37f 2758 msleep(50);
f4a71881
MW		 2759 /* If the FW isn't responding, kick it once, but only once. */
2760 if (!i40evf_asq_done(hw)) {
2761 i40evf_request_reset(adapter);
22ead37f 2762 msleep(50);
f4a71881 2763 }
5eae00c5 2764
dbb01c8a 2765 if (adapter->msix_entries) {
5eae00c5 2766 i40evf_misc_irq_disable(adapter);
5eae00c5 2767 i40evf_free_misc_irq(adapter);
5eae00c5 2768 i40evf_reset_interrupt_capability(adapter);
d31944d6 2769 i40evf_free_q_vectors(adapter);
5eae00c5
GR		 2770 }
2771
e5d17c3e
MW		 2772 if (adapter->watchdog_timer.function)
2773 del_timer_sync(&adapter->watchdog_timer);
2774
dbb01c8a
MW		 2775 flush_scheduled_work();
2776
43a3d9ba 2777 i40evf_free_rss(adapter);
66f9af85 2778
5eae00c5
GR		 2779 if (hw->aq.asq.count)
2780 i40evf_shutdown_adminq(hw);
2781
8ddb3326
JB		 2782 /* destroy the locks only once, here */
2783 mutex_destroy(&hw->aq.arq_mutex);
2784 mutex_destroy(&hw->aq.asq_mutex);
2785
5eae00c5
GR		 2786 iounmap(hw->hw_addr);
2787 pci_release_regions(pdev);
e284fc88
MW		 2788 i40evf_free_all_tx_resources(adapter);
2789 i40evf_free_all_rx_resources(adapter);
5eae00c5
GR		 2790 i40evf_free_queues(adapter);
2791 kfree(adapter->vf_res);
6ba36a24
MW		 2792 /* If we got removed before an up/down sequence, we've got a filter
2793 * hanging out there that we need to get rid of.
2794 */
2795 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
2796 list_del(&f->list);
2797 kfree(f);
2798 }
37dfdf37
MW		 2799 list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
2800 list_del(&f->list);
2801 kfree(f);
2802 }
5eae00c5
GR		 2803
2804 free_netdev(netdev);
2805
2806 pci_disable_pcie_error_reporting(pdev);
2807
2808 pci_disable_device(pdev);
2809}
2810
2811static struct pci_driver i40evf_driver = {
2812 .name = i40evf_driver_name,
2813 .id_table = i40evf_pci_tbl,
2814 .probe = i40evf_probe,
2815 .remove = i40evf_remove,
2816#ifdef CONFIG_PM
2817 .suspend = i40evf_suspend,
2818 .resume = i40evf_resume,
2819#endif
2820 .shutdown = i40evf_shutdown,
2821};
2822
2823/**
2824 * i40e_init_module - Driver Registration Routine
2825 *
2826 * i40e_init_module is the first routine called when the driver is
2827 * loaded. All it does is register with the PCI subsystem.
2828 **/
2829static int __init i40evf_init_module(void)
2830{
2831 int ret;
75a64435 2832
5eae00c5 2833 pr_info("i40evf: %s - version %s\n", i40evf_driver_string,
75a64435 2834 i40evf_driver_version);
5eae00c5
GR		 2835
2836 pr_info("%s\n", i40evf_copyright);
2837
6992a6c9
JK		 2838 i40evf_wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM, 1,
2839 i40evf_driver_name);
2803b16c
JB		 2840 if (!i40evf_wq) {
2841 pr_err("%s: Failed to create workqueue\n", i40evf_driver_name);
2842 return -ENOMEM;
2843 }
5eae00c5
GR		 2844 ret = pci_register_driver(&i40evf_driver);
2845 return ret;
2846}
2847
2848module_init(i40evf_init_module);
2849
2850/**
2851 * i40e_exit_module - Driver Exit Cleanup Routine
2852 *
2853 * i40e_exit_module is called just before the driver is removed
2854 * from memory.
2855 **/
2856static void __exit i40evf_exit_module(void)
2857{
2858 pci_unregister_driver(&i40evf_driver);
2803b16c 2859 destroy_workqueue(i40evf_wq);
5eae00c5
GR		 2860}
2861
2862module_exit(i40evf_exit_module);
2863
2864/* i40evf_main.c */
Linux kernel - Deliverables
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