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i40e/i40evf: Bump i40e to 1.4.11 and i40evf to 1.4.7
[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
5b8eb176 4 * Copyright(c) 2013 - 2015 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[] =
0af56f44 35 "Intel(R) XL710/X710 Virtual Function Network Driver";
5eae00c5 36
69ebe955
MW		 37#define DRV_KERN "-k"
38
39#define DRV_VERSION_MAJOR 1
40#define DRV_VERSION_MINOR 4
82f399c9 41#define DRV_VERSION_BUILD 7
69ebe955
MW		 42#define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
43 __stringify(DRV_VERSION_MINOR) "." \
44 __stringify(DRV_VERSION_BUILD) \
45 DRV_KERN
5eae00c5
GR		 46const char i40evf_driver_version[] = DRV_VERSION;
47static const char i40evf_copyright[] =
bf41846e 48 "Copyright (c) 2013 - 2015 Intel Corporation.";
5eae00c5
GR		 49
50/* i40evf_pci_tbl - PCI Device ID Table
51 *
52 * Wildcard entries (PCI_ANY_ID) should come last
53 * Last entry must be all 0s
54 *
55 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
56 * Class, Class Mask, private data (not used) }
57 */
9baa3c34 58static const struct pci_device_id i40evf_pci_tbl[] = {
ab60085e 59 {PCI_VDEVICE(INTEL, I40E_DEV_ID_VF), 0},
87e6c1d7 60 {PCI_VDEVICE(INTEL, I40E_DEV_ID_X722_VF), 0},
5eae00c5
GR		 61 /* required last entry */
62 {0, }
63};
64
65MODULE_DEVICE_TABLE(pci, i40evf_pci_tbl);
66
67MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
68MODULE_DESCRIPTION("Intel(R) XL710 X710 Virtual Function Network Driver");
69MODULE_LICENSE("GPL");
70MODULE_VERSION(DRV_VERSION);
71
2803b16c
JB		 72static struct workqueue_struct *i40evf_wq;
73
5eae00c5
GR		 74/**
75 * i40evf_allocate_dma_mem_d - OS specific memory alloc for shared code
76 * @hw: pointer to the HW structure
77 * @mem: ptr to mem struct to fill out
78 * @size: size of memory requested
79 * @alignment: what to align the allocation to
80 **/
81i40e_status i40evf_allocate_dma_mem_d(struct i40e_hw *hw,
82 struct i40e_dma_mem *mem,
83 u64 size, u32 alignment)
84{
85 struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back;
86
87 if (!mem)
88 return I40E_ERR_PARAM;
89
90 mem->size = ALIGN(size, alignment);
91 mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size,
92 (dma_addr_t *)&mem->pa, GFP_KERNEL);
93 if (mem->va)
94 return 0;
95 else
96 return I40E_ERR_NO_MEMORY;
97}
98
99/**
100 * i40evf_free_dma_mem_d - OS specific memory free for shared code
101 * @hw: pointer to the HW structure
102 * @mem: ptr to mem struct to free
103 **/
104i40e_status i40evf_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
105{
106 struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back;
107
108 if (!mem || !mem->va)
109 return I40E_ERR_PARAM;
110 dma_free_coherent(&adapter->pdev->dev, mem->size,
111 mem->va, (dma_addr_t)mem->pa);
112 return 0;
113}
114
115/**
116 * i40evf_allocate_virt_mem_d - OS specific memory alloc for shared code
117 * @hw: pointer to the HW structure
118 * @mem: ptr to mem struct to fill out
119 * @size: size of memory requested
120 **/
121i40e_status i40evf_allocate_virt_mem_d(struct i40e_hw *hw,
122 struct i40e_virt_mem *mem, u32 size)
123{
124 if (!mem)
125 return I40E_ERR_PARAM;
126
127 mem->size = size;
128 mem->va = kzalloc(size, GFP_KERNEL);
129
130 if (mem->va)
131 return 0;
132 else
133 return I40E_ERR_NO_MEMORY;
134}
135
136/**
137 * i40evf_free_virt_mem_d - OS specific memory free for shared code
138 * @hw: pointer to the HW structure
139 * @mem: ptr to mem struct to free
140 **/
141i40e_status i40evf_free_virt_mem_d(struct i40e_hw *hw,
142 struct i40e_virt_mem *mem)
143{
144 if (!mem)
145 return I40E_ERR_PARAM;
146
147 /* it's ok to kfree a NULL pointer */
148 kfree(mem->va);
149
150 return 0;
151}
152
153/**
154 * i40evf_debug_d - OS dependent version of debug printing
155 * @hw: pointer to the HW structure
156 * @mask: debug level mask
157 * @fmt_str: printf-type format description
158 **/
159void i40evf_debug_d(void *hw, u32 mask, char *fmt_str, ...)
160{
161 char buf[512];
162 va_list argptr;
163
164 if (!(mask & ((struct i40e_hw *)hw)->debug_mask))
165 return;
166
167 va_start(argptr, fmt_str);
168 vsnprintf(buf, sizeof(buf), fmt_str, argptr);
169 va_end(argptr);
170
171 /* the debug string is already formatted with a newline */
172 pr_info("%s", buf);
173}
174
175/**
176 * i40evf_tx_timeout - Respond to a Tx Hang
177 * @netdev: network interface device structure
178 **/
179static void i40evf_tx_timeout(struct net_device *netdev)
180{
181 struct i40evf_adapter *adapter = netdev_priv(netdev);
182
183 adapter->tx_timeout_count++;
67c818a1
MW		 184 if (!(adapter->flags & (I40EVF_FLAG_RESET_PENDING |
185 I40EVF_FLAG_RESET_NEEDED))) {
3526d800 186 adapter->flags |= I40EVF_FLAG_RESET_NEEDED;
2803b16c 187 queue_work(i40evf_wq, &adapter->reset_task);
625777e3 188 }
5eae00c5
GR		 189}
190
191/**
192 * i40evf_misc_irq_disable - Mask off interrupt generation on the NIC
193 * @adapter: board private structure
194 **/
195static void i40evf_misc_irq_disable(struct i40evf_adapter *adapter)
196{
197 struct i40e_hw *hw = &adapter->hw;
75a64435 198
5eae00c5
GR		 199 wr32(hw, I40E_VFINT_DYN_CTL01, 0);
200
201 /* read flush */
202 rd32(hw, I40E_VFGEN_RSTAT);
203
204 synchronize_irq(adapter->msix_entries[0].vector);
205}
206
207/**
208 * i40evf_misc_irq_enable - Enable default interrupt generation settings
209 * @adapter: board private structure
210 **/
211static void i40evf_misc_irq_enable(struct i40evf_adapter *adapter)
212{
213 struct i40e_hw *hw = &adapter->hw;
75a64435 214
5eae00c5
GR		 215 wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK |
216 I40E_VFINT_DYN_CTL01_ITR_INDX_MASK);
b1f3366b 217 wr32(hw, I40E_VFINT_ICR0_ENA1, I40E_VFINT_ICR0_ENA1_ADMINQ_MASK);
5eae00c5
GR		 218
219 /* read flush */
220 rd32(hw, I40E_VFGEN_RSTAT);
221}
222
223/**
224 * i40evf_irq_disable - Mask off interrupt generation on the NIC
225 * @adapter: board private structure
226 **/
227static void i40evf_irq_disable(struct i40evf_adapter *adapter)
228{
229 int i;
230 struct i40e_hw *hw = &adapter->hw;
231
dbb01c8a
MW		 232 if (!adapter->msix_entries)
233 return;
234
5eae00c5
GR		 235 for (i = 1; i < adapter->num_msix_vectors; i++) {
236 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), 0);
237 synchronize_irq(adapter->msix_entries[i].vector);
238 }
239 /* read flush */
240 rd32(hw, I40E_VFGEN_RSTAT);
5eae00c5
GR		 241}
242
243/**
244 * i40evf_irq_enable_queues - Enable interrupt for specified queues
245 * @adapter: board private structure
246 * @mask: bitmap of queues to enable
247 **/
248void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask)
249{
250 struct i40e_hw *hw = &adapter->hw;
251 int i;
252
253 for (i = 1; i < adapter->num_msix_vectors; i++) {
41a1d04b 254 if (mask & BIT(i - 1)) {
5eae00c5
GR		 255 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1),
256 I40E_VFINT_DYN_CTLN1_INTENA_MASK |
97bf75f1 257 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK |
b1f3366b 258 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK);
5eae00c5
GR		 259 }
260 }
261}
262
263/**
264 * i40evf_fire_sw_int - Generate SW interrupt for specified vectors
265 * @adapter: board private structure
266 * @mask: bitmap of vectors to trigger
267 **/
75a64435 268static void i40evf_fire_sw_int(struct i40evf_adapter *adapter, u32 mask)
5eae00c5
GR		 269{
270 struct i40e_hw *hw = &adapter->hw;
271 int i;
d82acb35 272 u32 dyn_ctl;
5eae00c5 273
164ec1bf
MW		 274 if (mask & 1) {
275 dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTL01);
b1f3366b 276 dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK |
97bf75f1 277 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK |
b1f3366b 278 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK;
164ec1bf
MW		 279 wr32(hw, I40E_VFINT_DYN_CTL01, dyn_ctl);
280 }
5eae00c5 281 for (i = 1; i < adapter->num_msix_vectors; i++) {
41a1d04b 282 if (mask & BIT(i)) {
5eae00c5 283 dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTLN1(i - 1));
b1f3366b 284 dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK |
97bf75f1 285 I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK |
b1f3366b 286 I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK;
5eae00c5
GR		 287 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), dyn_ctl);
288 }
289 }
290}
291
292/**
293 * i40evf_irq_enable - Enable default interrupt generation settings
294 * @adapter: board private structure
69c1d70a 295 * @flush: boolean value whether to run rd32()
5eae00c5
GR		 296 **/
297void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush)
298{
299 struct i40e_hw *hw = &adapter->hw;
300
164ec1bf 301 i40evf_misc_irq_enable(adapter);
5eae00c5
GR		 302 i40evf_irq_enable_queues(adapter, ~0);
303
304 if (flush)
305 rd32(hw, I40E_VFGEN_RSTAT);
306}
307
308/**
309 * i40evf_msix_aq - Interrupt handler for vector 0
310 * @irq: interrupt number
311 * @data: pointer to netdev
312 **/
313static irqreturn_t i40evf_msix_aq(int irq, void *data)
314{
315 struct net_device *netdev = data;
316 struct i40evf_adapter *adapter = netdev_priv(netdev);
317 struct i40e_hw *hw = &adapter->hw;
318 u32 val;
5eae00c5 319
cfbe4dba
JB		 320 /* handle non-queue interrupts, these reads clear the registers */
321 val = rd32(hw, I40E_VFINT_ICR01);
322 val = rd32(hw, I40E_VFINT_ICR0_ENA1);
5eae00c5 323
ed17f7e5
JS		 324 val = rd32(hw, I40E_VFINT_DYN_CTL01) |
325 I40E_VFINT_DYN_CTL01_CLEARPBA_MASK;
5eae00c5
GR		 326 wr32(hw, I40E_VFINT_DYN_CTL01, val);
327
5eae00c5
GR		 328 /* schedule work on the private workqueue */
329 schedule_work(&adapter->adminq_task);
330
331 return IRQ_HANDLED;
332}
333
334/**
335 * i40evf_msix_clean_rings - MSIX mode Interrupt Handler
336 * @irq: interrupt number
337 * @data: pointer to a q_vector
338 **/
339static irqreturn_t i40evf_msix_clean_rings(int irq, void *data)
340{
341 struct i40e_q_vector *q_vector = data;
342
343 if (!q_vector->tx.ring && !q_vector->rx.ring)
344 return IRQ_HANDLED;
345
5d3465a1 346 napi_schedule_irqoff(&q_vector->napi);
5eae00c5
GR		 347
348 return IRQ_HANDLED;
349}
350
351/**
352 * i40evf_map_vector_to_rxq - associate irqs with rx queues
353 * @adapter: board private structure
354 * @v_idx: interrupt number
355 * @r_idx: queue number
356 **/
357static void
358i40evf_map_vector_to_rxq(struct i40evf_adapter *adapter, int v_idx, int r_idx)
359{
7d96ba1a 360 struct i40e_q_vector *q_vector = &adapter->q_vectors[v_idx];
0dd438d8 361 struct i40e_ring *rx_ring = &adapter->rx_rings[r_idx];
5eae00c5
GR		 362
363 rx_ring->q_vector = q_vector;
364 rx_ring->next = q_vector->rx.ring;
365 rx_ring->vsi = &adapter->vsi;
366 q_vector->rx.ring = rx_ring;
367 q_vector->rx.count++;
368 q_vector->rx.latency_range = I40E_LOW_LATENCY;
ee2319cf 369 q_vector->itr_countdown = ITR_COUNTDOWN_START;
5eae00c5
GR		 370}
371
372/**
373 * i40evf_map_vector_to_txq - associate irqs with tx queues
374 * @adapter: board private structure
375 * @v_idx: interrupt number
376 * @t_idx: queue number
377 **/
378static void
379i40evf_map_vector_to_txq(struct i40evf_adapter *adapter, int v_idx, int t_idx)
380{
7d96ba1a 381 struct i40e_q_vector *q_vector = &adapter->q_vectors[v_idx];
0dd438d8 382 struct i40e_ring *tx_ring = &adapter->tx_rings[t_idx];
5eae00c5
GR		 383
384 tx_ring->q_vector = q_vector;
385 tx_ring->next = q_vector->tx.ring;
386 tx_ring->vsi = &adapter->vsi;
387 q_vector->tx.ring = tx_ring;
388 q_vector->tx.count++;
389 q_vector->tx.latency_range = I40E_LOW_LATENCY;
ee2319cf 390 q_vector->itr_countdown = ITR_COUNTDOWN_START;
5eae00c5 391 q_vector->num_ringpairs++;
41a1d04b 392 q_vector->ring_mask |= BIT(t_idx);
5eae00c5
GR		 393}
394
395/**
396 * i40evf_map_rings_to_vectors - Maps descriptor rings to vectors
397 * @adapter: board private structure to initialize
398 *
399 * This function maps descriptor rings to the queue-specific vectors
400 * we were allotted through the MSI-X enabling code. Ideally, we'd have
401 * one vector per ring/queue, but on a constrained vector budget, we
402 * group the rings as "efficiently" as possible. You would add new
403 * mapping configurations in here.
404 **/
405static int i40evf_map_rings_to_vectors(struct i40evf_adapter *adapter)
406{
407 int q_vectors;
408 int v_start = 0;
409 int rxr_idx = 0, txr_idx = 0;
cc052927
MW		 410 int rxr_remaining = adapter->num_active_queues;
411 int txr_remaining = adapter->num_active_queues;
5eae00c5
GR		 412 int i, j;
413 int rqpv, tqpv;
414 int err = 0;
415
416 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
417
418 /* The ideal configuration...
419 * We have enough vectors to map one per queue.
420 */
973371da 421 if (q_vectors >= (rxr_remaining * 2)) {
5eae00c5
GR		 422 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
423 i40evf_map_vector_to_rxq(adapter, v_start, rxr_idx);
424
425 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
426 i40evf_map_vector_to_txq(adapter, v_start, txr_idx);
427 goto out;
428 }
429
430 /* If we don't have enough vectors for a 1-to-1
431 * mapping, we'll have to group them so there are
432 * multiple queues per vector.
433 * Re-adjusting *qpv takes care of the remainder.
434 */
435 for (i = v_start; i < q_vectors; i++) {
436 rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i);
437 for (j = 0; j < rqpv; j++) {
438 i40evf_map_vector_to_rxq(adapter, i, rxr_idx);
439 rxr_idx++;
440 rxr_remaining--;
441 }
442 }
443 for (i = v_start; i < q_vectors; i++) {
444 tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i);
445 for (j = 0; j < tqpv; j++) {
446 i40evf_map_vector_to_txq(adapter, i, txr_idx);
447 txr_idx++;
448 txr_remaining--;
449 }
450 }
451
452out:
453 adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS;
454
455 return err;
456}
457
7709b4c1
AD		 458#ifdef CONFIG_NET_POLL_CONTROLLER
459/**
460 * i40evf_netpoll - A Polling 'interrupt' handler
461 * @netdev: network interface device structure
462 *
463 * This is used by netconsole to send skbs without having to re-enable
464 * interrupts. It's not called while the normal interrupt routine is executing.
465 **/
466static void i40evf_netpoll(struct net_device *netdev)
467{
468 struct i40evf_adapter *adapter = netdev_priv(netdev);
469 int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
470 int i;
471
472 /* if interface is down do nothing */
473 if (test_bit(__I40E_DOWN, &adapter->vsi.state))
474 return;
475
476 for (i = 0; i < q_vectors; i++)
7d96ba1a 477 i40evf_msix_clean_rings(0, &adapter->q_vectors[i]);
7709b4c1
AD		 478}
479
480#endif
5eae00c5
GR		 481/**
482 * i40evf_request_traffic_irqs - Initialize MSI-X interrupts
483 * @adapter: board private structure
484 *
485 * Allocates MSI-X vectors for tx and rx handling, and requests
486 * interrupts from the kernel.
487 **/
488static int
489i40evf_request_traffic_irqs(struct i40evf_adapter *adapter, char *basename)
490{
491 int vector, err, q_vectors;
492 int rx_int_idx = 0, tx_int_idx = 0;
493
494 i40evf_irq_disable(adapter);
495 /* Decrement for Other and TCP Timer vectors */
496 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
497
498 for (vector = 0; vector < q_vectors; vector++) {
7d96ba1a 499 struct i40e_q_vector *q_vector = &adapter->q_vectors[vector];
5eae00c5
GR		 500
501 if (q_vector->tx.ring && q_vector->rx.ring) {
502 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
503 "i40evf-%s-%s-%d", basename,
504 "TxRx", rx_int_idx++);
505 tx_int_idx++;
506 } else if (q_vector->rx.ring) {
507 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
508 "i40evf-%s-%s-%d", basename,
509 "rx", rx_int_idx++);
510 } else if (q_vector->tx.ring) {
511 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
512 "i40evf-%s-%s-%d", basename,
513 "tx", tx_int_idx++);
514 } else {
515 /* skip this unused q_vector */
516 continue;
517 }
518 err = request_irq(
519 adapter->msix_entries[vector + NONQ_VECS].vector,
520 i40evf_msix_clean_rings,
521 0,
522 q_vector->name,
523 q_vector);
524 if (err) {
525 dev_info(&adapter->pdev->dev,
fb43201f 526 "Request_irq failed, error: %d\n", err);
5eae00c5
GR		 527 goto free_queue_irqs;
528 }
529 /* assign the mask for this irq */
530 irq_set_affinity_hint(
531 adapter->msix_entries[vector + NONQ_VECS].vector,
532 q_vector->affinity_mask);
533 }
534
535 return 0;
536
537free_queue_irqs:
538 while (vector) {
539 vector--;
540 irq_set_affinity_hint(
541 adapter->msix_entries[vector + NONQ_VECS].vector,
542 NULL);
543 free_irq(adapter->msix_entries[vector + NONQ_VECS].vector,
7d96ba1a 544 &adapter->q_vectors[vector]);
5eae00c5
GR		 545 }
546 return err;
547}
548
549/**
550 * i40evf_request_misc_irq - Initialize MSI-X interrupts
551 * @adapter: board private structure
552 *
553 * Allocates MSI-X vector 0 and requests interrupts from the kernel. This
554 * vector is only for the admin queue, and stays active even when the netdev
555 * is closed.
556 **/
557static int i40evf_request_misc_irq(struct i40evf_adapter *adapter)
558{
559 struct net_device *netdev = adapter->netdev;
560 int err;
561
b39c1e2c 562 snprintf(adapter->misc_vector_name,
9a21a007
CW		 563 sizeof(adapter->misc_vector_name) - 1, "i40evf-%s:mbx",
564 dev_name(&adapter->pdev->dev));
5eae00c5 565 err = request_irq(adapter->msix_entries[0].vector,
e1dfee8e
MW		 566 &i40evf_msix_aq, 0,
567 adapter->misc_vector_name, netdev);
5eae00c5
GR		 568 if (err) {
569 dev_err(&adapter->pdev->dev,
77fa28be
CS		 570 "request_irq for %s failed: %d\n",
571 adapter->misc_vector_name, err);
5eae00c5
GR		 572 free_irq(adapter->msix_entries[0].vector, netdev);
573 }
574 return err;
575}
576
577/**
578 * i40evf_free_traffic_irqs - Free MSI-X interrupts
579 * @adapter: board private structure
580 *
581 * Frees all MSI-X vectors other than 0.
582 **/
583static void i40evf_free_traffic_irqs(struct i40evf_adapter *adapter)
584{
585 int i;
586 int q_vectors;
75a64435 587
5eae00c5
GR		 588 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
589
590 for (i = 0; i < q_vectors; i++) {
591 irq_set_affinity_hint(adapter->msix_entries[i+1].vector,
592 NULL);
593 free_irq(adapter->msix_entries[i+1].vector,
7d96ba1a 594 &adapter->q_vectors[i]);
5eae00c5
GR		 595 }
596}
597
598/**
599 * i40evf_free_misc_irq - Free MSI-X miscellaneous vector
600 * @adapter: board private structure
601 *
602 * Frees MSI-X vector 0.
603 **/
604static void i40evf_free_misc_irq(struct i40evf_adapter *adapter)
605{
606 struct net_device *netdev = adapter->netdev;
607
608 free_irq(adapter->msix_entries[0].vector, netdev);
609}
610
611/**
612 * i40evf_configure_tx - Configure Transmit Unit after Reset
613 * @adapter: board private structure
614 *
615 * Configure the Tx unit of the MAC after a reset.
616 **/
617static void i40evf_configure_tx(struct i40evf_adapter *adapter)
618{
619 struct i40e_hw *hw = &adapter->hw;
620 int i;
75a64435 621
cc052927 622 for (i = 0; i < adapter->num_active_queues; i++)
0dd438d8 623 adapter->tx_rings[i].tail = hw->hw_addr + I40E_QTX_TAIL1(i);
5eae00c5
GR		 624}
625
626/**
627 * i40evf_configure_rx - Configure Receive Unit after Reset
628 * @adapter: board private structure
629 *
630 * Configure the Rx unit of the MAC after a reset.
631 **/
632static void i40evf_configure_rx(struct i40evf_adapter *adapter)
633{
634 struct i40e_hw *hw = &adapter->hw;
635 struct net_device *netdev = adapter->netdev;
636 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
637 int i;
638 int rx_buf_len;
639
640
641 adapter->flags &= ~I40EVF_FLAG_RX_PS_CAPABLE;
642 adapter->flags |= I40EVF_FLAG_RX_1BUF_CAPABLE;
643
644 /* Decide whether to use packet split mode or not */
645 if (netdev->mtu > ETH_DATA_LEN) {
646 if (adapter->flags & I40EVF_FLAG_RX_PS_CAPABLE)
647 adapter->flags |= I40EVF_FLAG_RX_PS_ENABLED;
648 else
649 adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED;
650 } else {
651 if (adapter->flags & I40EVF_FLAG_RX_1BUF_CAPABLE)
652 adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED;
653 else
654 adapter->flags |= I40EVF_FLAG_RX_PS_ENABLED;
655 }
656
657 /* Set the RX buffer length according to the mode */
658 if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED) {
659 rx_buf_len = I40E_RX_HDR_SIZE;
660 } else {
661 if (netdev->mtu <= ETH_DATA_LEN)
662 rx_buf_len = I40EVF_RXBUFFER_2048;
663 else
664 rx_buf_len = ALIGN(max_frame, 1024);
665 }
666
cc052927 667 for (i = 0; i < adapter->num_active_queues; i++) {
0dd438d8
MW		 668 adapter->rx_rings[i].tail = hw->hw_addr + I40E_QRX_TAIL1(i);
669 adapter->rx_rings[i].rx_buf_len = rx_buf_len;
5eae00c5
GR		 670 }
671}
672
673/**
674 * i40evf_find_vlan - Search filter list for specific vlan filter
675 * @adapter: board private structure
676 * @vlan: vlan tag
677 *
678 * Returns ptr to the filter object or NULL
679 **/
680static struct
681i40evf_vlan_filter *i40evf_find_vlan(struct i40evf_adapter *adapter, u16 vlan)
682{
683 struct i40evf_vlan_filter *f;
684
685 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
686 if (vlan == f->vlan)
687 return f;
688 }
689 return NULL;
690}
691
692/**
693 * i40evf_add_vlan - Add a vlan filter to the list
694 * @adapter: board private structure
695 * @vlan: VLAN tag
696 *
697 * Returns ptr to the filter object or NULL when no memory available.
698 **/
699static struct
700i40evf_vlan_filter *i40evf_add_vlan(struct i40evf_adapter *adapter, u16 vlan)
701{
13acb546
MW		 702 struct i40evf_vlan_filter *f = NULL;
703 int count = 50;
704
705 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
706 &adapter->crit_section)) {
707 udelay(1);
708 if (--count == 0)
709 goto out;
710 }
5eae00c5
GR		 711
712 f = i40evf_find_vlan(adapter, vlan);
348d4994 713 if (!f) {
5eae00c5 714 f = kzalloc(sizeof(*f), GFP_ATOMIC);
348d4994 715 if (!f)
13acb546 716 goto clearout;
249c8b8d 717
5eae00c5
GR		 718 f->vlan = vlan;
719
720 INIT_LIST_HEAD(&f->list);
721 list_add(&f->list, &adapter->vlan_filter_list);
722 f->add = true;
723 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
724 }
725
13acb546
MW		 726clearout:
727 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
728out:
5eae00c5
GR		 729 return f;
730}
731
732/**
733 * i40evf_del_vlan - Remove a vlan filter from the list
734 * @adapter: board private structure
735 * @vlan: VLAN tag
736 **/
737static void i40evf_del_vlan(struct i40evf_adapter *adapter, u16 vlan)
738{
739 struct i40evf_vlan_filter *f;
13acb546
MW		 740 int count = 50;
741
742 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
743 &adapter->crit_section)) {
744 udelay(1);
745 if (--count == 0)
746 return;
747 }
5eae00c5
GR		 748
749 f = i40evf_find_vlan(adapter, vlan);
750 if (f) {
751 f->remove = true;
752 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
753 }
13acb546 754 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
5eae00c5
GR		 755}
756
757/**
758 * i40evf_vlan_rx_add_vid - Add a VLAN filter to a device
759 * @netdev: network device struct
760 * @vid: VLAN tag
761 **/
762static int i40evf_vlan_rx_add_vid(struct net_device *netdev,
75a64435 763 __always_unused __be16 proto, u16 vid)
5eae00c5
GR		 764{
765 struct i40evf_adapter *adapter = netdev_priv(netdev);
766
8ed995ff
MW		 767 if (!VLAN_ALLOWED(adapter))
768 return -EIO;
5eae00c5
GR		 769 if (i40evf_add_vlan(adapter, vid) == NULL)
770 return -ENOMEM;
771 return 0;
772}
773
774/**
775 * i40evf_vlan_rx_kill_vid - Remove a VLAN filter from a device
776 * @netdev: network device struct
777 * @vid: VLAN tag
778 **/
779static int i40evf_vlan_rx_kill_vid(struct net_device *netdev,
75a64435 780 __always_unused __be16 proto, u16 vid)
5eae00c5
GR		 781{
782 struct i40evf_adapter *adapter = netdev_priv(netdev);
783
8ed995ff
MW		 784 if (VLAN_ALLOWED(adapter)) {
785 i40evf_del_vlan(adapter, vid);
786 return 0;
787 }
788 return -EIO;
5eae00c5
GR		 789}
790
791/**
792 * i40evf_find_filter - Search filter list for specific mac filter
793 * @adapter: board private structure
794 * @macaddr: the MAC address
795 *
796 * Returns ptr to the filter object or NULL
797 **/
798static struct
799i40evf_mac_filter *i40evf_find_filter(struct i40evf_adapter *adapter,
800 u8 *macaddr)
801{
802 struct i40evf_mac_filter *f;
803
804 if (!macaddr)
805 return NULL;
806
807 list_for_each_entry(f, &adapter->mac_filter_list, list) {
808 if (ether_addr_equal(macaddr, f->macaddr))
809 return f;
810 }
811 return NULL;
812}
813
814/**
815 * i40e_add_filter - Add a mac filter to the filter list
816 * @adapter: board private structure
817 * @macaddr: the MAC address
818 *
819 * Returns ptr to the filter object or NULL when no memory available.
820 **/
821static struct
822i40evf_mac_filter *i40evf_add_filter(struct i40evf_adapter *adapter,
823 u8 *macaddr)
824{
825 struct i40evf_mac_filter *f;
54e16f64 826 int count = 50;
5eae00c5
GR		 827
828 if (!macaddr)
829 return NULL;
830
831 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
54e16f64 832 &adapter->crit_section)) {
b65476cd 833 udelay(1);
54e16f64
MW		 834 if (--count == 0)
835 return NULL;
836 }
5eae00c5
GR		 837
838 f = i40evf_find_filter(adapter, macaddr);
348d4994 839 if (!f) {
5eae00c5 840 f = kzalloc(sizeof(*f), GFP_ATOMIC);
348d4994 841 if (!f) {
5eae00c5
GR		 842 clear_bit(__I40EVF_IN_CRITICAL_TASK,
843 &adapter->crit_section);
844 return NULL;
845 }
846
9a173901 847 ether_addr_copy(f->macaddr, macaddr);
5eae00c5
GR		 848
849 list_add(&f->list, &adapter->mac_filter_list);
850 f->add = true;
851 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
852 }
853
854 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
855 return f;
856}
857
858/**
859 * i40evf_set_mac - NDO callback to set port mac address
860 * @netdev: network interface device structure
861 * @p: pointer to an address structure
862 *
863 * Returns 0 on success, negative on failure
864 **/
865static int i40evf_set_mac(struct net_device *netdev, void *p)
866{
867 struct i40evf_adapter *adapter = netdev_priv(netdev);
868 struct i40e_hw *hw = &adapter->hw;
869 struct i40evf_mac_filter *f;
870 struct sockaddr *addr = p;
871
872 if (!is_valid_ether_addr(addr->sa_data))
873 return -EADDRNOTAVAIL;
874
875 if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
876 return 0;
877
14e52ee2
MW		 878 if (adapter->flags & I40EVF_FLAG_ADDR_SET_BY_PF)
879 return -EPERM;
880
881 f = i40evf_find_filter(adapter, hw->mac.addr);
882 if (f) {
883 f->remove = true;
884 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
885 }
886
5eae00c5
GR		 887 f = i40evf_add_filter(adapter, addr->sa_data);
888 if (f) {
9a173901
GR		 889 ether_addr_copy(hw->mac.addr, addr->sa_data);
890 ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr);
5eae00c5
GR		 891 }
892
893 return (f == NULL) ? -ENOMEM : 0;
894}
895
896/**
897 * i40evf_set_rx_mode - NDO callback to set the netdev filters
898 * @netdev: network interface device structure
899 **/
900static void i40evf_set_rx_mode(struct net_device *netdev)
901{
902 struct i40evf_adapter *adapter = netdev_priv(netdev);
903 struct i40evf_mac_filter *f, *ftmp;
904 struct netdev_hw_addr *uca;
905 struct netdev_hw_addr *mca;
2f41f335 906 struct netdev_hw_addr *ha;
54e16f64 907 int count = 50;
5eae00c5
GR		 908
909 /* add addr if not already in the filter list */
910 netdev_for_each_uc_addr(uca, netdev) {
911 i40evf_add_filter(adapter, uca->addr);
912 }
913 netdev_for_each_mc_addr(mca, netdev) {
914 i40evf_add_filter(adapter, mca->addr);
915 }
916
917 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
54e16f64 918 &adapter->crit_section)) {
b65476cd 919 udelay(1);
54e16f64
MW		 920 if (--count == 0) {
921 dev_err(&adapter->pdev->dev,
922 "Failed to get lock in %s\n", __func__);
923 return;
924 }
925 }
5eae00c5
GR		 926 /* remove filter if not in netdev list */
927 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
2f41f335
SN		 928 netdev_for_each_mc_addr(mca, netdev)
929 if (ether_addr_equal(mca->addr, f->macaddr))
930 goto bottom_of_search_loop;
931
932 netdev_for_each_uc_addr(uca, netdev)
933 if (ether_addr_equal(uca->addr, f->macaddr))
934 goto bottom_of_search_loop;
935
936 for_each_dev_addr(netdev, ha)
937 if (ether_addr_equal(ha->addr, f->macaddr))
938 goto bottom_of_search_loop;
939
940 if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr))
941 goto bottom_of_search_loop;
942
943 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
944 f->remove = true;
945 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
946
947bottom_of_search_loop:
948 continue;
5eae00c5
GR		 949 }
950 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
951}
952
953/**
954 * i40evf_napi_enable_all - enable NAPI on all queue vectors
955 * @adapter: board private structure
956 **/
957static void i40evf_napi_enable_all(struct i40evf_adapter *adapter)
958{
959 int q_idx;
960 struct i40e_q_vector *q_vector;
961 int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
962
963 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
964 struct napi_struct *napi;
75a64435 965
7d96ba1a 966 q_vector = &adapter->q_vectors[q_idx];
5eae00c5
GR		 967 napi = &q_vector->napi;
968 napi_enable(napi);
969 }
970}
971
972/**
973 * i40evf_napi_disable_all - disable NAPI on all queue vectors
974 * @adapter: board private structure
975 **/
976static void i40evf_napi_disable_all(struct i40evf_adapter *adapter)
977{
978 int q_idx;
979 struct i40e_q_vector *q_vector;
980 int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
981
982 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
7d96ba1a 983 q_vector = &adapter->q_vectors[q_idx];
5eae00c5
GR		 984 napi_disable(&q_vector->napi);
985 }
986}
987
988/**
989 * i40evf_configure - set up transmit and receive data structures
990 * @adapter: board private structure
991 **/
992static void i40evf_configure(struct i40evf_adapter *adapter)
993{
994 struct net_device *netdev = adapter->netdev;
995 int i;
996
997 i40evf_set_rx_mode(netdev);
998
999 i40evf_configure_tx(adapter);
1000 i40evf_configure_rx(adapter);
1001 adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES;
1002
cc052927 1003 for (i = 0; i < adapter->num_active_queues; i++) {
0dd438d8 1004 struct i40e_ring *ring = &adapter->rx_rings[i];
75a64435 1005
a132af24 1006 i40evf_alloc_rx_buffers_1buf(ring, ring->count);
5eae00c5
GR		 1007 ring->next_to_use = ring->count - 1;
1008 writel(ring->next_to_use, ring->tail);
1009 }
1010}
1011
1012/**
1013 * i40evf_up_complete - Finish the last steps of bringing up a connection
1014 * @adapter: board private structure
1015 **/
1016static int i40evf_up_complete(struct i40evf_adapter *adapter)
1017{
1018 adapter->state = __I40EVF_RUNNING;
1019 clear_bit(__I40E_DOWN, &adapter->vsi.state);
1020
1021 i40evf_napi_enable_all(adapter);
1022
1023 adapter->aq_required |= I40EVF_FLAG_AQ_ENABLE_QUEUES;
1024 mod_timer_pending(&adapter->watchdog_timer, jiffies + 1);
1025 return 0;
1026}
1027
5eae00c5
GR		 1028/**
1029 * i40e_down - Shutdown the connection processing
1030 * @adapter: board private structure
1031 **/
1032void i40evf_down(struct i40evf_adapter *adapter)
1033{
1034 struct net_device *netdev = adapter->netdev;
1035 struct i40evf_mac_filter *f;
1036
209dc4da 1037 if (adapter->state <= __I40EVF_DOWN_PENDING)
ddf0b3a6
MW		 1038 return;
1039
53d0b3ae
MW		 1040 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
1041 &adapter->crit_section))
1042 usleep_range(500, 1000);
1043
63e18c25
MW		 1044 netif_carrier_off(netdev);
1045 netif_tx_disable(netdev);
748c434b 1046 i40evf_napi_disable_all(adapter);
63e18c25 1047 i40evf_irq_disable(adapter);
53d0b3ae 1048
ef8693eb 1049 /* remove all MAC filters */
5eae00c5
GR		 1050 list_for_each_entry(f, &adapter->mac_filter_list, list) {
1051 f->remove = true;
1052 }
ed1f5b58
MW		 1053 /* remove all VLAN filters */
1054 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
1055 f->remove = true;
1056 }
ef8693eb
MW		 1057 if (!(adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) &&
1058 adapter->state != __I40EVF_RESETTING) {
53d0b3ae
MW		 1059 /* cancel any current operation */
1060 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
53d0b3ae
MW		 1061 /* Schedule operations to close down the HW. Don't wait
1062 * here for this to complete. The watchdog is still running
1063 * and it will take care of this.
1064 */
1065 adapter->aq_required = I40EVF_FLAG_AQ_DEL_MAC_FILTER;
ed1f5b58 1066 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
ef8693eb 1067 adapter->aq_required |= I40EVF_FLAG_AQ_DISABLE_QUEUES;
ef8693eb 1068 }
5eae00c5 1069
53d0b3ae 1070 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
5eae00c5
GR		 1071}
1072
1073/**
1074 * i40evf_acquire_msix_vectors - Setup the MSIX capability
1075 * @adapter: board private structure
1076 * @vectors: number of vectors to request
1077 *
1078 * Work with the OS to set up the MSIX vectors needed.
1079 *
1080 * Returns 0 on success, negative on failure
1081 **/
1082static int
1083i40evf_acquire_msix_vectors(struct i40evf_adapter *adapter, int vectors)
1084{
1085 int err, vector_threshold;
1086
1087 /* We'll want at least 3 (vector_threshold):
1088 * 0) Other (Admin Queue and link, mostly)
1089 * 1) TxQ[0] Cleanup
1090 * 2) RxQ[0] Cleanup
1091 */
1092 vector_threshold = MIN_MSIX_COUNT;
1093
1094 /* The more we get, the more we will assign to Tx/Rx Cleanup
1095 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1096 * Right now, we simply care about how many we'll get; we'll
1097 * set them up later while requesting irq's.
1098 */
fc2f2f5d
AG		 1099 err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
1100 vector_threshold, vectors);
1101 if (err < 0) {
80e72893 1102 dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n");
5eae00c5
GR		 1103 kfree(adapter->msix_entries);
1104 adapter->msix_entries = NULL;
fc2f2f5d 1105 return err;
5eae00c5 1106 }
fc2f2f5d
AG		 1107
1108 /* Adjust for only the vectors we'll use, which is minimum
1109 * of max_msix_q_vectors + NONQ_VECS, or the number of
1110 * vectors we were allocated.
1111 */
1112 adapter->num_msix_vectors = err;
1113 return 0;
5eae00c5
GR		 1114}
1115
1116/**
1117 * i40evf_free_queues - Free memory for all rings
1118 * @adapter: board private structure to initialize
1119 *
1120 * Free all of the memory associated with queue pairs.
1121 **/
1122static void i40evf_free_queues(struct i40evf_adapter *adapter)
1123{
5eae00c5
GR		 1124 if (!adapter->vsi_res)
1125 return;
0dd438d8 1126 kfree(adapter->tx_rings);
10311540 1127 adapter->tx_rings = NULL;
0dd438d8 1128 kfree(adapter->rx_rings);
10311540 1129 adapter->rx_rings = NULL;
5eae00c5
GR		 1130}
1131
1132/**
1133 * i40evf_alloc_queues - Allocate memory for all rings
1134 * @adapter: board private structure to initialize
1135 *
1136 * We allocate one ring per queue at run-time since we don't know the
1137 * number of queues at compile-time. The polling_netdev array is
1138 * intended for Multiqueue, but should work fine with a single queue.
1139 **/
1140static int i40evf_alloc_queues(struct i40evf_adapter *adapter)
1141{
1142 int i;
1143
0dd438d8
MW		 1144 adapter->tx_rings = kcalloc(adapter->num_active_queues,
1145 sizeof(struct i40e_ring), GFP_KERNEL);
1146 if (!adapter->tx_rings)
1147 goto err_out;
1148 adapter->rx_rings = kcalloc(adapter->num_active_queues,
1149 sizeof(struct i40e_ring), GFP_KERNEL);
1150 if (!adapter->rx_rings)
1151 goto err_out;
1152
cc052927 1153 for (i = 0; i < adapter->num_active_queues; i++) {
5eae00c5
GR		 1154 struct i40e_ring *tx_ring;
1155 struct i40e_ring *rx_ring;
1156
0dd438d8 1157 tx_ring = &adapter->tx_rings[i];
5eae00c5
GR		 1158
1159 tx_ring->queue_index = i;
1160 tx_ring->netdev = adapter->netdev;
1161 tx_ring->dev = &adapter->pdev->dev;
d732a184 1162 tx_ring->count = adapter->tx_desc_count;
1f012279
ASJ		 1163 if (adapter->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
1164 tx_ring->flags |= I40E_TXR_FLAGS_WB_ON_ITR;
5eae00c5 1165
0dd438d8 1166 rx_ring = &adapter->rx_rings[i];
5eae00c5
GR		 1167 rx_ring->queue_index = i;
1168 rx_ring->netdev = adapter->netdev;
1169 rx_ring->dev = &adapter->pdev->dev;
d732a184 1170 rx_ring->count = adapter->rx_desc_count;
5eae00c5
GR		 1171 }
1172
1173 return 0;
1174
1175err_out:
1176 i40evf_free_queues(adapter);
1177 return -ENOMEM;
1178}
1179
1180/**
1181 * i40evf_set_interrupt_capability - set MSI-X or FAIL if not supported
1182 * @adapter: board private structure to initialize
1183 *
1184 * Attempt to configure the interrupts using the best available
1185 * capabilities of the hardware and the kernel.
1186 **/
1187static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter)
1188{
1189 int vector, v_budget;
1190 int pairs = 0;
1191 int err = 0;
1192
1193 if (!adapter->vsi_res) {
1194 err = -EIO;
1195 goto out;
1196 }
cc052927 1197 pairs = adapter->num_active_queues;
5eae00c5
GR		 1198
1199 /* It's easy to be greedy for MSI-X vectors, but it really
1200 * doesn't do us much good if we have a lot more vectors
1201 * than CPU's. So let's be conservative and only ask for
1202 * (roughly) twice the number of vectors as there are CPU's.
1203 */
30a500e2
MW		 1204 v_budget = min_t(int, pairs, (int)(num_online_cpus() * 2)) + NONQ_VECS;
1205 v_budget = min_t(int, v_budget, (int)adapter->vf_res->max_vectors);
5eae00c5 1206
5eae00c5
GR		 1207 adapter->msix_entries = kcalloc(v_budget,
1208 sizeof(struct msix_entry), GFP_KERNEL);
1209 if (!adapter->msix_entries) {
1210 err = -ENOMEM;
1211 goto out;
1212 }
1213
1214 for (vector = 0; vector < v_budget; vector++)
1215 adapter->msix_entries[vector].entry = vector;
1216
313ed2d5 1217 err = i40evf_acquire_msix_vectors(adapter, v_budget);
5eae00c5
GR		 1218
1219out:
e6c4cf6f
MW		 1220 netif_set_real_num_rx_queues(adapter->netdev, pairs);
1221 netif_set_real_num_tx_queues(adapter->netdev, pairs);
5eae00c5
GR		 1222 return err;
1223}
1224
e25d00b8 1225/**
2c86ac3c 1226 * i40e_config_rss_aq - Prepare for RSS using AQ commands
e25d00b8
ASJ		 1227 * @vsi: vsi structure
1228 * @seed: RSS hash seed
2c86ac3c
HZ		 1229 * @lut: Lookup table
1230 * @lut_size: Lookup table size
1231 *
1232 * Return 0 on success, negative on failure
e25d00b8 1233 **/
2c86ac3c
HZ		 1234static int i40evf_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
1235 u8 *lut, u16 lut_size)
e25d00b8 1236{
e25d00b8
ASJ		 1237 struct i40evf_adapter *adapter = vsi->back;
1238 struct i40e_hw *hw = &adapter->hw;
2c86ac3c 1239 int ret = 0;
e25d00b8
ASJ		 1240
1241 if (!vsi->id)
2c86ac3c 1242 return -EINVAL;
e25d00b8
ASJ		 1243
1244 if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) {
1245 /* bail because we already have a command pending */
e3d132d1 1246 dev_err(&adapter->pdev->dev, "Cannot configure RSS, command %d pending\n",
e25d00b8 1247 adapter->current_op);
2c86ac3c 1248 return -EBUSY;
e25d00b8
ASJ		 1249 }
1250
2c86ac3c
HZ		 1251 if (seed) {
1252 struct i40e_aqc_get_set_rss_key_data *rss_key =
1253 (struct i40e_aqc_get_set_rss_key_data *)seed;
1254 ret = i40evf_aq_set_rss_key(hw, vsi->id, rss_key);
1255 if (ret) {
1256 dev_err(&adapter->pdev->dev, "Cannot set RSS key, err %s aq_err %s\n",
1257 i40evf_stat_str(hw, ret),
1258 i40evf_aq_str(hw, hw->aq.asq_last_status));
1259 return ret;
1260 }
1261 }
e25d00b8 1262
2c86ac3c
HZ		 1263 if (lut) {
1264 ret = i40evf_aq_set_rss_lut(hw, vsi->id, false, lut, lut_size);
1265 if (ret) {
1266 dev_err(&adapter->pdev->dev,
1267 "Cannot set RSS lut, err %s aq_err %s\n",
1268 i40evf_stat_str(hw, ret),
1269 i40evf_aq_str(hw, hw->aq.asq_last_status));
1270 return ret;
1271 }
e25d00b8
ASJ		 1272 }
1273
2c86ac3c 1274 return ret;
e25d00b8
ASJ		 1275}
1276
1277/**
2c86ac3c
HZ		 1278 * i40evf_config_rss_reg - Configure RSS keys and lut by writing registers
1279 * @vsi: Pointer to vsi structure
e25d00b8 1280 * @seed: RSS hash seed
2c86ac3c
HZ		 1281 * @lut: Lookup table
1282 * @lut_size: Lookup table size
1283 *
1284 * Returns 0 on success, negative on failure
e25d00b8 1285 **/
2c86ac3c
HZ		 1286static int i40evf_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
1287 const u8 *lut, u16 lut_size)
e25d00b8 1288{
2c86ac3c 1289 struct i40evf_adapter *adapter = vsi->back;
e25d00b8 1290 struct i40e_hw *hw = &adapter->hw;
2c86ac3c 1291 u16 i;
e25d00b8 1292
2c86ac3c
HZ		 1293 if (seed) {
1294 u32 *seed_dw = (u32 *)seed;
1295
1296 for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++)
1297 wr32(hw, I40E_VFQF_HKEY(i), seed_dw[i]);
1298 }
1299
1300 if (lut) {
1301 u32 *lut_dw = (u32 *)lut;
1302
1303 if (lut_size != I40EVF_HLUT_ARRAY_SIZE)
1304 return -EINVAL;
1305
1306 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
1307 wr32(hw, I40E_VFQF_HLUT(i), lut_dw[i]);
e25d00b8
ASJ		 1308 }
1309 i40e_flush(hw);
2c86ac3c
HZ		 1310
1311 return 0;
1312}
1313
90b02b43
HZ		 1314/**
1315 * * i40evf_get_rss_aq - Get RSS keys and lut by using AQ commands
1316 * @vsi: Pointer to vsi structure
1317 * @seed: RSS hash seed
1318 * @lut: Lookup table
1319 * @lut_size: Lookup table size
1320 *
1321 * Return 0 on success, negative on failure
1322 **/
1323static int i40evf_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
1324 u8 *lut, u16 lut_size)
1325{
1326 struct i40evf_adapter *adapter = vsi->back;
1327 struct i40e_hw *hw = &adapter->hw;
1328 int ret = 0;
1329
1330 if (seed) {
1331 ret = i40evf_aq_get_rss_key(hw, vsi->id,
1332 (struct i40e_aqc_get_set_rss_key_data *)seed);
1333 if (ret) {
1334 dev_err(&adapter->pdev->dev,
1335 "Cannot get RSS key, err %s aq_err %s\n",
1336 i40evf_stat_str(hw, ret),
1337 i40evf_aq_str(hw, hw->aq.asq_last_status));
1338 return ret;
1339 }
1340 }
1341
1342 if (lut) {
1343 ret = i40evf_aq_get_rss_lut(hw, vsi->id, seed, lut, lut_size);
1344 if (ret) {
1345 dev_err(&adapter->pdev->dev,
1346 "Cannot get RSS lut, err %s aq_err %s\n",
1347 i40evf_stat_str(hw, ret),
1348 i40evf_aq_str(hw, hw->aq.asq_last_status));
1349 return ret;
1350 }
1351 }
1352
1353 return ret;
1354}
1355
1356/**
1357 * * i40evf_get_rss_reg - Get RSS keys and lut by reading registers
1358 * @vsi: Pointer to vsi structure
1359 * @seed: RSS hash seed
1360 * @lut: Lookup table
1361 * @lut_size: Lookup table size
1362 *
1363 * Returns 0 on success, negative on failure
1364 **/
1365static int i40evf_get_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
1366 const u8 *lut, u16 lut_size)
1367{
1368 struct i40evf_adapter *adapter = vsi->back;
1369 struct i40e_hw *hw = &adapter->hw;
1370 u16 i;
1371
1372 if (seed) {
1373 u32 *seed_dw = (u32 *)seed;
1374
1375 for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++)
1376 seed_dw[i] = rd32(hw, I40E_VFQF_HKEY(i));
1377 }
1378
1379 if (lut) {
1380 u32 *lut_dw = (u32 *)lut;
1381
1382 if (lut_size != I40EVF_HLUT_ARRAY_SIZE)
1383 return -EINVAL;
1384
1385 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
1386 lut_dw[i] = rd32(hw, I40E_VFQF_HLUT(i));
1387 }
1388
1389 return 0;
1390}
1391
2c86ac3c
HZ		 1392/**
1393 * i40evf_config_rss - Configure RSS keys and lut
1394 * @vsi: Pointer to vsi structure
1395 * @seed: RSS hash seed
1396 * @lut: Lookup table
1397 * @lut_size: Lookup table size
1398 *
1399 * Returns 0 on success, negative on failure
1400 **/
1401int i40evf_config_rss(struct i40e_vsi *vsi, const u8 *seed,
1402 u8 *lut, u16 lut_size)
1403{
1404 struct i40evf_adapter *adapter = vsi->back;
1405
1406 if (RSS_AQ(adapter))
1407 return i40evf_config_rss_aq(vsi, seed, lut, lut_size);
1408 else
1409 return i40evf_config_rss_reg(vsi, seed, lut, lut_size);
1410}
1411
90b02b43
HZ		 1412/**
1413 * i40evf_get_rss - Get RSS keys and lut
1414 * @vsi: Pointer to vsi structure
1415 * @seed: RSS hash seed
1416 * @lut: Lookup table
1417 * @lut_size: Lookup table size
1418 *
1419 * Returns 0 on success, negative on failure
1420 **/
1421int i40evf_get_rss(struct i40e_vsi *vsi, const u8 *seed, u8 *lut, u16 lut_size)
1422{
1423 struct i40evf_adapter *adapter = vsi->back;
1424
1425 if (RSS_AQ(adapter))
1426 return i40evf_get_rss_aq(vsi, seed, lut, lut_size);
1427 else
1428 return i40evf_get_rss_reg(vsi, seed, lut, lut_size);
1429}
1430
2c86ac3c
HZ		 1431/**
1432 * i40evf_fill_rss_lut - Fill the lut with default values
1433 * @lut: Lookup table to be filled with
1434 * @rss_table_size: Lookup table size
1435 * @rss_size: Range of queue number for hashing
1436 **/
1437static void i40evf_fill_rss_lut(u8 *lut, u16 rss_table_size, u16 rss_size)
1438{
1439 u16 i;
1440
1441 for (i = 0; i < rss_table_size; i++)
1442 lut[i] = i % rss_size;
e25d00b8
ASJ		 1443}
1444
1445/**
96a81986 1446 * i40evf_init_rss - Prepare for RSS
e25d00b8 1447 * @adapter: board private structure
2c86ac3c
HZ		 1448 *
1449 * Return 0 on success, negative on failure
e25d00b8 1450 **/
2c86ac3c 1451static int i40evf_init_rss(struct i40evf_adapter *adapter)
e25d00b8 1452{
2c86ac3c 1453 struct i40e_vsi *vsi = &adapter->vsi;
e25d00b8
ASJ		 1454 struct i40e_hw *hw = &adapter->hw;
1455 u8 seed[I40EVF_HKEY_ARRAY_SIZE];
1456 u64 hena;
2c86ac3c
HZ		 1457 u8 *lut;
1458 int ret;
e25d00b8
ASJ		 1459
1460 /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */
3d0da5b7
ASJ		 1461 if (adapter->vf_res->vf_offload_flags &
1462 I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
1463 hena = I40E_DEFAULT_RSS_HENA_EXPANDED;
1464 else
1465 hena = I40E_DEFAULT_RSS_HENA;
e25d00b8
ASJ		 1466 wr32(hw, I40E_VFQF_HENA(0), (u32)hena);
1467 wr32(hw, I40E_VFQF_HENA(1), (u32)(hena >> 32));
1468
2c86ac3c
HZ		 1469 lut = kzalloc(I40EVF_HLUT_ARRAY_SIZE, GFP_KERNEL);
1470 if (!lut)
1471 return -ENOMEM;
66f9af85
HZ		 1472
1473 /* Use user configured lut if there is one, otherwise use default */
1474 if (vsi->rss_lut_user)
1475 memcpy(lut, vsi->rss_lut_user, I40EVF_HLUT_ARRAY_SIZE);
1476 else
1477 i40evf_fill_rss_lut(lut, I40EVF_HLUT_ARRAY_SIZE,
1478 adapter->num_active_queues);
1479
1480 /* Use user configured hash key if there is one, otherwise
1481 * user default.
1482 */
1483 if (vsi->rss_hkey_user)
1484 memcpy(seed, vsi->rss_hkey_user, I40EVF_HKEY_ARRAY_SIZE);
1485 else
1486 netdev_rss_key_fill((void *)seed, I40EVF_HKEY_ARRAY_SIZE);
2c86ac3c
HZ		 1487 ret = i40evf_config_rss(vsi, seed, lut, I40EVF_HLUT_ARRAY_SIZE);
1488 kfree(lut);
1489
1490 return ret;
e25d00b8
ASJ		 1491}
1492
5eae00c5
GR		 1493/**
1494 * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors
1495 * @adapter: board private structure to initialize
1496 *
1497 * We allocate one q_vector per queue interrupt. If allocation fails we
1498 * return -ENOMEM.
1499 **/
1500static int i40evf_alloc_q_vectors(struct i40evf_adapter *adapter)
1501{
7d96ba1a 1502 int q_idx = 0, num_q_vectors;
5eae00c5
GR		 1503 struct i40e_q_vector *q_vector;
1504
1505 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
0dd438d8 1506 adapter->q_vectors = kcalloc(num_q_vectors, sizeof(*q_vector),
7d96ba1a
MW		 1507 GFP_KERNEL);
1508 if (!adapter->q_vectors)
1509 goto err_out;
5eae00c5
GR		 1510
1511 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
7d96ba1a 1512 q_vector = &adapter->q_vectors[q_idx];
5eae00c5
GR		 1513 q_vector->adapter = adapter;
1514 q_vector->vsi = &adapter->vsi;
1515 q_vector->v_idx = q_idx;
1516 netif_napi_add(adapter->netdev, &q_vector->napi,
75a64435 1517 i40evf_napi_poll, NAPI_POLL_WEIGHT);
5eae00c5
GR		 1518 }
1519
1520 return 0;
1521
1522err_out:
1523 while (q_idx) {
1524 q_idx--;
7d96ba1a 1525 q_vector = &adapter->q_vectors[q_idx];
5eae00c5 1526 netif_napi_del(&q_vector->napi);
5eae00c5 1527 }
7d96ba1a 1528 kfree(adapter->q_vectors);
5eae00c5
GR		 1529 return -ENOMEM;
1530}
1531
1532/**
1533 * i40evf_free_q_vectors - Free memory allocated for interrupt vectors
1534 * @adapter: board private structure to initialize
1535 *
1536 * This function frees the memory allocated to the q_vectors. In addition if
1537 * NAPI is enabled it will delete any references to the NAPI struct prior
1538 * to freeing the q_vector.
1539 **/
1540static void i40evf_free_q_vectors(struct i40evf_adapter *adapter)
1541{
1542 int q_idx, num_q_vectors;
1543 int napi_vectors;
1544
1545 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
cc052927 1546 napi_vectors = adapter->num_active_queues;
5eae00c5
GR		 1547
1548 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
7d96ba1a 1549 struct i40e_q_vector *q_vector = &adapter->q_vectors[q_idx];
5eae00c5
GR		 1550 if (q_idx < napi_vectors)
1551 netif_napi_del(&q_vector->napi);
5eae00c5 1552 }
7d96ba1a 1553 kfree(adapter->q_vectors);
5eae00c5
GR		 1554}
1555
1556/**
1557 * i40evf_reset_interrupt_capability - Reset MSIX setup
1558 * @adapter: board private structure
1559 *
1560 **/
1561void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter)
1562{
1563 pci_disable_msix(adapter->pdev);
1564 kfree(adapter->msix_entries);
1565 adapter->msix_entries = NULL;
5eae00c5
GR		 1566}
1567
1568/**
1569 * i40evf_init_interrupt_scheme - Determine if MSIX is supported and init
1570 * @adapter: board private structure to initialize
1571 *
1572 **/
1573int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter)
1574{
1575 int err;
1576
1577 err = i40evf_set_interrupt_capability(adapter);
1578 if (err) {
1579 dev_err(&adapter->pdev->dev,
1580 "Unable to setup interrupt capabilities\n");
1581 goto err_set_interrupt;
1582 }
1583
1584 err = i40evf_alloc_q_vectors(adapter);
1585 if (err) {
1586 dev_err(&adapter->pdev->dev,
1587 "Unable to allocate memory for queue vectors\n");
1588 goto err_alloc_q_vectors;
1589 }
1590
1591 err = i40evf_alloc_queues(adapter);
1592 if (err) {
1593 dev_err(&adapter->pdev->dev,
1594 "Unable to allocate memory for queues\n");
1595 goto err_alloc_queues;
1596 }
1597
1598 dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u",
75a64435
MW		 1599 (adapter->num_active_queues > 1) ? "Enabled" : "Disabled",
1600 adapter->num_active_queues);
5eae00c5
GR		 1601
1602 return 0;
1603err_alloc_queues:
1604 i40evf_free_q_vectors(adapter);
1605err_alloc_q_vectors:
1606 i40evf_reset_interrupt_capability(adapter);
1607err_set_interrupt:
1608 return err;
1609}
1610
66f9af85
HZ		 1611/**
1612 * i40evf_clear_rss_config_user - Clear user configurations of RSS
1613 * @vsi: Pointer to VSI structure
1614 **/
1615static void i40evf_clear_rss_config_user(struct i40e_vsi *vsi)
1616{
1617 if (!vsi)
1618 return;
1619
1620 kfree(vsi->rss_hkey_user);
1621 vsi->rss_hkey_user = NULL;
1622
1623 kfree(vsi->rss_lut_user);
1624 vsi->rss_lut_user = NULL;
1625}
1626
5eae00c5
GR		 1627/**
1628 * i40evf_watchdog_timer - Periodic call-back timer
1629 * @data: pointer to adapter disguised as unsigned long
1630 **/
1631static void i40evf_watchdog_timer(unsigned long data)
1632{
1633 struct i40evf_adapter *adapter = (struct i40evf_adapter *)data;
75a64435 1634
5eae00c5
GR		 1635 schedule_work(&adapter->watchdog_task);
1636 /* timer will be rescheduled in watchdog task */
1637}
1638
1639/**
1640 * i40evf_watchdog_task - Periodic call-back task
1641 * @work: pointer to work_struct
1642 **/
1643static void i40evf_watchdog_task(struct work_struct *work)
1644{
1645 struct i40evf_adapter *adapter = container_of(work,
75a64435
MW		 1646 struct i40evf_adapter,
1647 watchdog_task);
5eae00c5 1648 struct i40e_hw *hw = &adapter->hw;
ee5c1e92 1649 u32 reg_val;
5eae00c5 1650
ef8693eb
MW		 1651 if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section))
1652 goto restart_watchdog;
1653
1654 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) {
ee5c1e92
MW		 1655 reg_val = rd32(hw, I40E_VFGEN_RSTAT) &
1656 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
1657 if ((reg_val == I40E_VFR_VFACTIVE) ||
1658 (reg_val == I40E_VFR_COMPLETED)) {
ef8693eb
MW		 1659 /* A chance for redemption! */
1660 dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n");
1661 adapter->state = __I40EVF_STARTUP;
1662 adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED;
1663 schedule_delayed_work(&adapter->init_task, 10);
1664 clear_bit(__I40EVF_IN_CRITICAL_TASK,
1665 &adapter->crit_section);
1666 /* Don't reschedule the watchdog, since we've restarted
1667 * the init task. When init_task contacts the PF and
1668 * gets everything set up again, it'll restart the
1669 * watchdog for us. Down, boy. Sit. Stay. Woof.
1670 */
1671 return;
1672 }
ef8693eb
MW		 1673 adapter->aq_required = 0;
1674 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
5eae00c5 1675 goto watchdog_done;
ef8693eb 1676 }
5eae00c5 1677
ef8693eb
MW		 1678 if ((adapter->state < __I40EVF_DOWN) ||
1679 (adapter->flags & I40EVF_FLAG_RESET_PENDING))
5eae00c5
GR		 1680 goto watchdog_done;
1681
ef8693eb 1682 /* check for reset */
ee5c1e92
MW		 1683 reg_val = rd32(hw, I40E_VF_ARQLEN1) & I40E_VF_ARQLEN1_ARQENABLE_MASK;
1684 if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) && !reg_val) {
5eae00c5 1685 adapter->state = __I40EVF_RESETTING;
ef8693eb 1686 adapter->flags |= I40EVF_FLAG_RESET_PENDING;
249c8b8d 1687 dev_err(&adapter->pdev->dev, "Hardware reset detected\n");
5eae00c5 1688 schedule_work(&adapter->reset_task);
ef8693eb
MW		 1689 adapter->aq_required = 0;
1690 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
5eae00c5
GR		 1691 goto watchdog_done;
1692 }
1693
1694 /* Process admin queue tasks. After init, everything gets done
1695 * here so we don't race on the admin queue.
1696 */
ed636960 1697 if (adapter->current_op) {
0758e7cb
MW		 1698 if (!i40evf_asq_done(hw)) {
1699 dev_dbg(&adapter->pdev->dev, "Admin queue timeout\n");
1700 i40evf_send_api_ver(adapter);
1701 }
5eae00c5 1702 goto watchdog_done;
0758e7cb 1703 }
e6d038de
MW		 1704 if (adapter->aq_required & I40EVF_FLAG_AQ_GET_CONFIG) {
1705 i40evf_send_vf_config_msg(adapter);
1706 goto watchdog_done;
1707 }
5eae00c5 1708
e284fc88
MW		 1709 if (adapter->aq_required & I40EVF_FLAG_AQ_DISABLE_QUEUES) {
1710 i40evf_disable_queues(adapter);
1711 goto watchdog_done;
1712 }
1713
5eae00c5
GR		 1714 if (adapter->aq_required & I40EVF_FLAG_AQ_MAP_VECTORS) {
1715 i40evf_map_queues(adapter);
1716 goto watchdog_done;
1717 }
1718
1719 if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_MAC_FILTER) {
1720 i40evf_add_ether_addrs(adapter);
1721 goto watchdog_done;
1722 }
1723
1724 if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_VLAN_FILTER) {
1725 i40evf_add_vlans(adapter);
1726 goto watchdog_done;
1727 }
1728
1729 if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_MAC_FILTER) {
1730 i40evf_del_ether_addrs(adapter);
1731 goto watchdog_done;
1732 }
1733
1734 if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_VLAN_FILTER) {
1735 i40evf_del_vlans(adapter);
1736 goto watchdog_done;
1737 }
1738
5eae00c5
GR		 1739 if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_QUEUES) {
1740 i40evf_configure_queues(adapter);
1741 goto watchdog_done;
1742 }
1743
1744 if (adapter->aq_required & I40EVF_FLAG_AQ_ENABLE_QUEUES) {
1745 i40evf_enable_queues(adapter);
1746 goto watchdog_done;
1747 }
1748
e25d00b8
ASJ		 1749 if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_RSS) {
1750 /* This message goes straight to the firmware, not the
1751 * PF, so we don't have to set current_op as we will
1752 * not get a response through the ARQ.
1753 */
96a81986 1754 i40evf_init_rss(adapter);
e25d00b8
ASJ		 1755 adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_RSS;
1756 goto watchdog_done;
1757 }
1758
5eae00c5
GR		 1759 if (adapter->state == __I40EVF_RUNNING)
1760 i40evf_request_stats(adapter);
5eae00c5 1761watchdog_done:
4870e176
MW		 1762 if (adapter->state == __I40EVF_RUNNING) {
1763 i40evf_irq_enable_queues(adapter, ~0);
1764 i40evf_fire_sw_int(adapter, 0xFF);
1765 } else {
1766 i40evf_fire_sw_int(adapter, 0x1);
1767 }
1768
ef8693eb
MW		 1769 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
1770restart_watchdog:
d3e2edb7
AS		 1771 if (adapter->state == __I40EVF_REMOVE)
1772 return;
5eae00c5
GR		 1773 if (adapter->aq_required)
1774 mod_timer(&adapter->watchdog_timer,
1775 jiffies + msecs_to_jiffies(20));
1776 else
1777 mod_timer(&adapter->watchdog_timer, jiffies + (HZ * 2));
5eae00c5
GR		 1778 schedule_work(&adapter->adminq_task);
1779}
1780
67c818a1
MW		 1781#define I40EVF_RESET_WAIT_MS 10
1782#define I40EVF_RESET_WAIT_COUNT 500
5eae00c5
GR		 1783/**
1784 * i40evf_reset_task - Call-back task to handle hardware reset
1785 * @work: pointer to work_struct
1786 *
1787 * During reset we need to shut down and reinitialize the admin queue
1788 * before we can use it to communicate with the PF again. We also clear
1789 * and reinit the rings because that context is lost as well.
1790 **/
1791static void i40evf_reset_task(struct work_struct *work)
1792{
ef8693eb
MW		 1793 struct i40evf_adapter *adapter = container_of(work,
1794 struct i40evf_adapter,
1795 reset_task);
ac833bbf 1796 struct net_device *netdev = adapter->netdev;
5eae00c5 1797 struct i40e_hw *hw = &adapter->hw;
40d01366 1798 struct i40evf_vlan_filter *vlf;
ac833bbf 1799 struct i40evf_mac_filter *f;
ee5c1e92 1800 u32 reg_val;
ac833bbf 1801 int i = 0, err;
5eae00c5
GR		 1802
1803 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
1804 &adapter->crit_section))
f98a2006 1805 usleep_range(500, 1000);
3526d800 1806
67c818a1 1807 i40evf_misc_irq_disable(adapter);
3526d800 1808 if (adapter->flags & I40EVF_FLAG_RESET_NEEDED) {
67c818a1
MW		 1809 adapter->flags &= ~I40EVF_FLAG_RESET_NEEDED;
1810 /* Restart the AQ here. If we have been reset but didn't
1811 * detect it, or if the PF had to reinit, our AQ will be hosed.
1812 */
1813 i40evf_shutdown_adminq(hw);
1814 i40evf_init_adminq(hw);
3526d800
MW		 1815 i40evf_request_reset(adapter);
1816 }
67c818a1 1817 adapter->flags |= I40EVF_FLAG_RESET_PENDING;
3526d800 1818
ef8693eb
MW		 1819 /* poll until we see the reset actually happen */
1820 for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) {
ee5c1e92
MW		 1821 reg_val = rd32(hw, I40E_VF_ARQLEN1) &
1822 I40E_VF_ARQLEN1_ARQENABLE_MASK;
1823 if (!reg_val)
ef8693eb 1824 break;
ee5c1e92 1825 usleep_range(5000, 10000);
ef8693eb
MW		 1826 }
1827 if (i == I40EVF_RESET_WAIT_COUNT) {
67c818a1 1828 dev_info(&adapter->pdev->dev, "Never saw reset\n");
ef8693eb
MW		 1829 goto continue_reset; /* act like the reset happened */
1830 }
5eae00c5 1831
ef8693eb
MW		 1832 /* wait until the reset is complete and the PF is responding to us */
1833 for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) {
ee5c1e92
MW		 1834 reg_val = rd32(hw, I40E_VFGEN_RSTAT) &
1835 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
1836 if (reg_val == I40E_VFR_VFACTIVE)
5eae00c5 1837 break;
c88e38cc 1838 msleep(I40EVF_RESET_WAIT_MS);
5eae00c5 1839 }
509a447a 1840 pci_set_master(adapter->pdev);
67c818a1
MW		 1841 /* extra wait to make sure minimum wait is met */
1842 msleep(I40EVF_RESET_WAIT_MS);
ef8693eb 1843 if (i == I40EVF_RESET_WAIT_COUNT) {
874d1a10 1844 struct i40evf_mac_filter *ftmp;
6ba36a24
MW		 1845 struct i40evf_vlan_filter *fv, *fvtmp;
1846
5eae00c5 1847 /* reset never finished */
80e72893 1848 dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n",
ee5c1e92 1849 reg_val);
ef8693eb
MW		 1850 adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED;
1851
169f4076
MW		 1852 if (netif_running(adapter->netdev)) {
1853 set_bit(__I40E_DOWN, &adapter->vsi.state);
ac833bbf 1854 netif_carrier_off(netdev);
67c818a1
MW		 1855 netif_tx_disable(netdev);
1856 i40evf_napi_disable_all(adapter);
1857 i40evf_irq_disable(adapter);
169f4076
MW		 1858 i40evf_free_traffic_irqs(adapter);
1859 i40evf_free_all_tx_resources(adapter);
1860 i40evf_free_all_rx_resources(adapter);
1861 }
6ba36a24
MW		 1862
1863 /* Delete all of the filters, both MAC and VLAN. */
1864 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list,
1865 list) {
1866 list_del(&f->list);
1867 kfree(f);
1868 }
67c818a1 1869
6ba36a24
MW		 1870 list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list,
1871 list) {
1872 list_del(&fv->list);
1873 kfree(fv);
1874 }
1875
ef8693eb
MW		 1876 i40evf_free_misc_irq(adapter);
1877 i40evf_reset_interrupt_capability(adapter);
1878 i40evf_free_queues(adapter);
d31944d6 1879 i40evf_free_q_vectors(adapter);
ef8693eb
MW		 1880 kfree(adapter->vf_res);
1881 i40evf_shutdown_adminq(hw);
1882 adapter->netdev->flags &= ~IFF_UP;
1883 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
67c818a1
MW		 1884 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
1885 dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n");
ef8693eb 1886 return; /* Do not attempt to reinit. It's dead, Jim. */
5eae00c5 1887 }
ef8693eb
MW		 1888
1889continue_reset:
3c8e0b98 1890 if (netif_running(adapter->netdev)) {
3c8e0b98 1891 netif_carrier_off(netdev);
67c818a1
MW		 1892 netif_tx_stop_all_queues(netdev);
1893 i40evf_napi_disable_all(adapter);
3c8e0b98 1894 }
67c818a1 1895 i40evf_irq_disable(adapter);
ac833bbf 1896
5eae00c5 1897 adapter->state = __I40EVF_RESETTING;
67c818a1
MW		 1898 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
1899
1900 /* free the Tx/Rx rings and descriptors, might be better to just
1901 * re-use them sometime in the future
1902 */
1903 i40evf_free_all_rx_resources(adapter);
1904 i40evf_free_all_tx_resources(adapter);
5eae00c5
GR		 1905
1906 /* kill and reinit the admin queue */
1907 if (i40evf_shutdown_adminq(hw))
ac833bbf
MW		 1908 dev_warn(&adapter->pdev->dev, "Failed to shut down adminq\n");
1909 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
5eae00c5
GR		 1910 err = i40evf_init_adminq(hw);
1911 if (err)
ac833bbf
MW		 1912 dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n",
1913 err);
5eae00c5 1914
e6d038de
MW		 1915 adapter->aq_required = I40EVF_FLAG_AQ_GET_CONFIG;
1916 adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS;
ac833bbf
MW		 1917
1918 /* re-add all MAC filters */
1919 list_for_each_entry(f, &adapter->mac_filter_list, list) {
1920 f->add = true;
1921 }
1922 /* re-add all VLAN filters */
40d01366
MW		 1923 list_for_each_entry(vlf, &adapter->vlan_filter_list, list) {
1924 vlf->add = true;
ac833bbf 1925 }
e6d038de 1926 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
ac833bbf 1927 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
5eae00c5 1928 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
67c818a1 1929 i40evf_misc_irq_enable(adapter);
5eae00c5
GR		 1930
1931 mod_timer(&adapter->watchdog_timer, jiffies + 2);
1932
1933 if (netif_running(adapter->netdev)) {
1934 /* allocate transmit descriptors */
1935 err = i40evf_setup_all_tx_resources(adapter);
1936 if (err)
1937 goto reset_err;
1938
1939 /* allocate receive descriptors */
1940 err = i40evf_setup_all_rx_resources(adapter);
1941 if (err)
1942 goto reset_err;
1943
1944 i40evf_configure(adapter);
1945
1946 err = i40evf_up_complete(adapter);
1947 if (err)
1948 goto reset_err;
1949
1950 i40evf_irq_enable(adapter, true);
67c818a1
MW		 1951 } else {
1952 adapter->state = __I40EVF_DOWN;
5eae00c5 1953 }
67c818a1 1954
5eae00c5
GR		 1955 return;
1956reset_err:
80e72893 1957 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n");
5eae00c5
GR		 1958 i40evf_close(adapter->netdev);
1959}
1960
1961/**
1962 * i40evf_adminq_task - worker thread to clean the admin queue
1963 * @work: pointer to work_struct containing our data
1964 **/
1965static void i40evf_adminq_task(struct work_struct *work)
1966{
1967 struct i40evf_adapter *adapter =
1968 container_of(work, struct i40evf_adapter, adminq_task);
1969 struct i40e_hw *hw = &adapter->hw;
1970 struct i40e_arq_event_info event;
1971 struct i40e_virtchnl_msg *v_msg;
1972 i40e_status ret;
912257e5 1973 u32 val, oldval;
5eae00c5
GR		 1974 u16 pending;
1975
ef8693eb 1976 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED)
7235448c 1977 goto out;
ef8693eb 1978
1001dc37
MW		 1979 event.buf_len = I40EVF_MAX_AQ_BUF_SIZE;
1980 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
249c8b8d 1981 if (!event.msg_buf)
7235448c 1982 goto out;
249c8b8d 1983
5eae00c5
GR		 1984 v_msg = (struct i40e_virtchnl_msg *)&event.desc;
1985 do {
1986 ret = i40evf_clean_arq_element(hw, &event, &pending);
8b011ebb 1987 if (ret || !v_msg->v_opcode)
5eae00c5
GR		 1988 break; /* No event to process or error cleaning ARQ */
1989
1990 i40evf_virtchnl_completion(adapter, v_msg->v_opcode,
1991 v_msg->v_retval, event.msg_buf,
1001dc37 1992 event.msg_len);
75a64435 1993 if (pending != 0)
5eae00c5 1994 memset(event.msg_buf, 0, I40EVF_MAX_AQ_BUF_SIZE);
5eae00c5
GR		 1995 } while (pending);
1996
67c818a1
MW		 1997 if ((adapter->flags &
1998 (I40EVF_FLAG_RESET_PENDING | I40EVF_FLAG_RESET_NEEDED)) ||
1999 adapter->state == __I40EVF_RESETTING)
2000 goto freedom;
2001
912257e5
MW		 2002 /* check for error indications */
2003 val = rd32(hw, hw->aq.arq.len);
2004 oldval = val;
b1f3366b 2005 if (val & I40E_VF_ARQLEN1_ARQVFE_MASK) {
912257e5 2006 dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n");
b1f3366b 2007 val &= ~I40E_VF_ARQLEN1_ARQVFE_MASK;
912257e5 2008 }
b1f3366b 2009 if (val & I40E_VF_ARQLEN1_ARQOVFL_MASK) {
912257e5 2010 dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n");
b1f3366b 2011 val &= ~I40E_VF_ARQLEN1_ARQOVFL_MASK;
912257e5 2012 }
b1f3366b 2013 if (val & I40E_VF_ARQLEN1_ARQCRIT_MASK) {
912257e5 2014 dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n");
b1f3366b 2015 val &= ~I40E_VF_ARQLEN1_ARQCRIT_MASK;
912257e5
MW		 2016 }
2017 if (oldval != val)
2018 wr32(hw, hw->aq.arq.len, val);
2019
2020 val = rd32(hw, hw->aq.asq.len);
2021 oldval = val;
b1f3366b 2022 if (val & I40E_VF_ATQLEN1_ATQVFE_MASK) {
912257e5 2023 dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n");
b1f3366b 2024 val &= ~I40E_VF_ATQLEN1_ATQVFE_MASK;
912257e5 2025 }
b1f3366b 2026 if (val & I40E_VF_ATQLEN1_ATQOVFL_MASK) {
912257e5 2027 dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n");
b1f3366b 2028 val &= ~I40E_VF_ATQLEN1_ATQOVFL_MASK;
912257e5 2029 }
b1f3366b 2030 if (val & I40E_VF_ATQLEN1_ATQCRIT_MASK) {
912257e5 2031 dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n");
b1f3366b 2032 val &= ~I40E_VF_ATQLEN1_ATQCRIT_MASK;
912257e5
MW		 2033 }
2034 if (oldval != val)
2035 wr32(hw, hw->aq.asq.len, val);
2036
67c818a1 2037freedom:
7235448c
MW		 2038 kfree(event.msg_buf);
2039out:
5eae00c5
GR		 2040 /* re-enable Admin queue interrupt cause */
2041 i40evf_misc_irq_enable(adapter);
5eae00c5
GR		 2042}
2043
2044/**
2045 * i40evf_free_all_tx_resources - Free Tx Resources for All Queues
2046 * @adapter: board private structure
2047 *
2048 * Free all transmit software resources
2049 **/
e284fc88 2050void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter)
5eae00c5
GR		 2051{
2052 int i;
2053
fdb47ae8
MW		 2054 if (!adapter->tx_rings)
2055 return;
2056
cc052927 2057 for (i = 0; i < adapter->num_active_queues; i++)
0dd438d8
MW		 2058 if (adapter->tx_rings[i].desc)
2059 i40evf_free_tx_resources(&adapter->tx_rings[i]);
5eae00c5
GR		 2060}
2061
2062/**
2063 * i40evf_setup_all_tx_resources - allocate all queues Tx resources
2064 * @adapter: board private structure
2065 *
2066 * If this function returns with an error, then it's possible one or
2067 * more of the rings is populated (while the rest are not). It is the
2068 * callers duty to clean those orphaned rings.
2069 *
2070 * Return 0 on success, negative on failure
2071 **/
2072static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter)
2073{
2074 int i, err = 0;
2075
cc052927 2076 for (i = 0; i < adapter->num_active_queues; i++) {
0dd438d8
MW		 2077 adapter->tx_rings[i].count = adapter->tx_desc_count;
2078 err = i40evf_setup_tx_descriptors(&adapter->tx_rings[i]);
5eae00c5
GR		 2079 if (!err)
2080 continue;
2081 dev_err(&adapter->pdev->dev,
fb43201f 2082 "Allocation for Tx Queue %u failed\n", i);
5eae00c5
GR		 2083 break;
2084 }
2085
2086 return err;
2087}
2088
2089/**
2090 * i40evf_setup_all_rx_resources - allocate all queues Rx resources
2091 * @adapter: board private structure
2092 *
2093 * If this function returns with an error, then it's possible one or
2094 * more of the rings is populated (while the rest are not). It is the
2095 * callers duty to clean those orphaned rings.
2096 *
2097 * Return 0 on success, negative on failure
2098 **/
2099static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter)
2100{
2101 int i, err = 0;
2102
cc052927 2103 for (i = 0; i < adapter->num_active_queues; i++) {
0dd438d8
MW		 2104 adapter->rx_rings[i].count = adapter->rx_desc_count;
2105 err = i40evf_setup_rx_descriptors(&adapter->rx_rings[i]);
5eae00c5
GR		 2106 if (!err)
2107 continue;
2108 dev_err(&adapter->pdev->dev,
fb43201f 2109 "Allocation for Rx Queue %u failed\n", i);
5eae00c5
GR		 2110 break;
2111 }
2112 return err;
2113}
2114
2115/**
2116 * i40evf_free_all_rx_resources - Free Rx Resources for All Queues
2117 * @adapter: board private structure
2118 *
2119 * Free all receive software resources
2120 **/
e284fc88 2121void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter)
5eae00c5
GR		 2122{
2123 int i;
2124
fdb47ae8
MW		 2125 if (!adapter->rx_rings)
2126 return;
2127
cc052927 2128 for (i = 0; i < adapter->num_active_queues; i++)
0dd438d8
MW		 2129 if (adapter->rx_rings[i].desc)
2130 i40evf_free_rx_resources(&adapter->rx_rings[i]);
5eae00c5
GR		 2131}
2132
2133/**
2134 * i40evf_open - Called when a network interface is made active
2135 * @netdev: network interface device structure
2136 *
2137 * Returns 0 on success, negative value on failure
2138 *
2139 * The open entry point is called when a network interface is made
2140 * active by the system (IFF_UP). At this point all resources needed
2141 * for transmit and receive operations are allocated, the interrupt
2142 * handler is registered with the OS, the watchdog timer is started,
2143 * and the stack is notified that the interface is ready.
2144 **/
2145static int i40evf_open(struct net_device *netdev)
2146{
2147 struct i40evf_adapter *adapter = netdev_priv(netdev);
2148 int err;
2149
ef8693eb
MW		 2150 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) {
2151 dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n");
2152 return -EIO;
2153 }
209dc4da
MW		 2154
2155 if (adapter->state != __I40EVF_DOWN)
5eae00c5
GR		 2156 return -EBUSY;
2157
2158 /* allocate transmit descriptors */
2159 err = i40evf_setup_all_tx_resources(adapter);
2160 if (err)
2161 goto err_setup_tx;
2162
2163 /* allocate receive descriptors */
2164 err = i40evf_setup_all_rx_resources(adapter);
2165 if (err)
2166 goto err_setup_rx;
2167
2168 /* clear any pending interrupts, may auto mask */
2169 err = i40evf_request_traffic_irqs(adapter, netdev->name);
2170 if (err)
2171 goto err_req_irq;
2172
44151cd3 2173 i40evf_add_filter(adapter, adapter->hw.mac.addr);
5eae00c5
GR		 2174 i40evf_configure(adapter);
2175
2176 err = i40evf_up_complete(adapter);
2177 if (err)
2178 goto err_req_irq;
2179
2180 i40evf_irq_enable(adapter, true);
2181
2182 return 0;
2183
2184err_req_irq:
2185 i40evf_down(adapter);
2186 i40evf_free_traffic_irqs(adapter);
2187err_setup_rx:
2188 i40evf_free_all_rx_resources(adapter);
2189err_setup_tx:
2190 i40evf_free_all_tx_resources(adapter);
2191
2192 return err;
2193}
2194
2195/**
2196 * i40evf_close - Disables a network interface
2197 * @netdev: network interface device structure
2198 *
2199 * Returns 0, this is not allowed to fail
2200 *
2201 * The close entry point is called when an interface is de-activated
2202 * by the OS. The hardware is still under the drivers control, but
2203 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue)
2204 * are freed, along with all transmit and receive resources.
2205 **/
2206static int i40evf_close(struct net_device *netdev)
2207{
2208 struct i40evf_adapter *adapter = netdev_priv(netdev);
2209
209dc4da 2210 if (adapter->state <= __I40EVF_DOWN_PENDING)
ef8693eb
MW		 2211 return 0;
2212
ef8693eb 2213
5eae00c5
GR		 2214 set_bit(__I40E_DOWN, &adapter->vsi.state);
2215
2216 i40evf_down(adapter);
209dc4da 2217 adapter->state = __I40EVF_DOWN_PENDING;
5eae00c5
GR		 2218 i40evf_free_traffic_irqs(adapter);
2219
5eae00c5
GR		 2220 return 0;
2221}
2222
2223/**
2224 * i40evf_get_stats - Get System Network Statistics
2225 * @netdev: network interface device structure
2226 *
2227 * Returns the address of the device statistics structure.
2228 * The statistics are actually updated from the timer callback.
2229 **/
2230static struct net_device_stats *i40evf_get_stats(struct net_device *netdev)
2231{
2232 struct i40evf_adapter *adapter = netdev_priv(netdev);
2233
2234 /* only return the current stats */
2235 return &adapter->net_stats;
2236}
2237
5eae00c5
GR		 2238/**
2239 * i40evf_change_mtu - Change the Maximum Transfer Unit
2240 * @netdev: network interface device structure
2241 * @new_mtu: new value for maximum frame size
2242 *
2243 * Returns 0 on success, negative on failure
2244 **/
2245static int i40evf_change_mtu(struct net_device *netdev, int new_mtu)
2246{
2247 struct i40evf_adapter *adapter = netdev_priv(netdev);
2248 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
2249
2250 if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2251 return -EINVAL;
2252
5eae00c5 2253 netdev->mtu = new_mtu;
67c818a1
MW		 2254 adapter->flags |= I40EVF_FLAG_RESET_NEEDED;
2255 schedule_work(&adapter->reset_task);
2256
5eae00c5
GR		 2257 return 0;
2258}
2259
2260static const struct net_device_ops i40evf_netdev_ops = {
2261 .ndo_open = i40evf_open,
2262 .ndo_stop = i40evf_close,
2263 .ndo_start_xmit = i40evf_xmit_frame,
2264 .ndo_get_stats = i40evf_get_stats,
2265 .ndo_set_rx_mode = i40evf_set_rx_mode,
2266 .ndo_validate_addr = eth_validate_addr,
2267 .ndo_set_mac_address = i40evf_set_mac,
2268 .ndo_change_mtu = i40evf_change_mtu,
2269 .ndo_tx_timeout = i40evf_tx_timeout,
2270 .ndo_vlan_rx_add_vid = i40evf_vlan_rx_add_vid,
2271 .ndo_vlan_rx_kill_vid = i40evf_vlan_rx_kill_vid,
7709b4c1
AD		 2272#ifdef CONFIG_NET_POLL_CONTROLLER
2273 .ndo_poll_controller = i40evf_netpoll,
2274#endif
5eae00c5
GR		 2275};
2276
2277/**
2278 * i40evf_check_reset_complete - check that VF reset is complete
2279 * @hw: pointer to hw struct
2280 *
2281 * Returns 0 if device is ready to use, or -EBUSY if it's in reset.
2282 **/
2283static int i40evf_check_reset_complete(struct i40e_hw *hw)
2284{
2285 u32 rstat;
2286 int i;
2287
2288 for (i = 0; i < 100; i++) {
fd35886a
AS		 2289 rstat = rd32(hw, I40E_VFGEN_RSTAT) &
2290 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
2291 if ((rstat == I40E_VFR_VFACTIVE) ||
2292 (rstat == I40E_VFR_COMPLETED))
5eae00c5 2293 return 0;
f98a2006 2294 usleep_range(10, 20);
5eae00c5
GR		 2295 }
2296 return -EBUSY;
2297}
2298
e6d038de
MW		 2299/**
2300 * i40evf_process_config - Process the config information we got from the PF
2301 * @adapter: board private structure
2302 *
2303 * Verify that we have a valid config struct, and set up our netdev features
2304 * and our VSI struct.
2305 **/
2306int i40evf_process_config(struct i40evf_adapter *adapter)
2307{
2308 struct net_device *netdev = adapter->netdev;
2309 int i;
2310
2311 /* got VF config message back from PF, now we can parse it */
2312 for (i = 0; i < adapter->vf_res->num_vsis; i++) {
2313 if (adapter->vf_res->vsi_res[i].vsi_type == I40E_VSI_SRIOV)
2314 adapter->vsi_res = &adapter->vf_res->vsi_res[i];
2315 }
2316 if (!adapter->vsi_res) {
2317 dev_err(&adapter->pdev->dev, "No LAN VSI found\n");
2318 return -ENODEV;
2319 }
2320
2321 if (adapter->vf_res->vf_offload_flags
2322 & I40E_VIRTCHNL_VF_OFFLOAD_VLAN) {
cc7e406c
MW		 2323 netdev->vlan_features = netdev->features &
2324 ~(NETIF_F_HW_VLAN_CTAG_TX |
2325 NETIF_F_HW_VLAN_CTAG_RX |
2326 NETIF_F_HW_VLAN_CTAG_FILTER);
e6d038de
MW		 2327 netdev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2328 NETIF_F_HW_VLAN_CTAG_RX |
2329 NETIF_F_HW_VLAN_CTAG_FILTER;
2330 }
2331 netdev->features |= NETIF_F_HIGHDMA |
2332 NETIF_F_SG |
2333 NETIF_F_IP_CSUM |
53692b1d 2334 NETIF_F_SCTP_CRC |
e6d038de
MW		 2335 NETIF_F_IPV6_CSUM |
2336 NETIF_F_TSO |
2337 NETIF_F_TSO6 |
2338 NETIF_F_RXCSUM |
2339 NETIF_F_GRO;
2340
2341 /* copy netdev features into list of user selectable features */
2342 netdev->hw_features |= netdev->features;
2343 netdev->hw_features &= ~NETIF_F_RXCSUM;
2344
2345 adapter->vsi.id = adapter->vsi_res->vsi_id;
2346
2347 adapter->vsi.back = adapter;
2348 adapter->vsi.base_vector = 1;
2349 adapter->vsi.work_limit = I40E_DEFAULT_IRQ_WORK;
2350 adapter->vsi.rx_itr_setting = (I40E_ITR_DYNAMIC |
2351 ITR_REG_TO_USEC(I40E_ITR_RX_DEF));
2352 adapter->vsi.tx_itr_setting = (I40E_ITR_DYNAMIC |
2353 ITR_REG_TO_USEC(I40E_ITR_TX_DEF));
2354 adapter->vsi.netdev = adapter->netdev;
f578f5f4 2355 adapter->vsi.qs_handle = adapter->vsi_res->qset_handle;
e6d038de
MW		 2356 return 0;
2357}
2358
5eae00c5
GR		 2359/**
2360 * i40evf_init_task - worker thread to perform delayed initialization
2361 * @work: pointer to work_struct containing our data
2362 *
2363 * This task completes the work that was begun in probe. Due to the nature
2364 * of VF-PF communications, we may need to wait tens of milliseconds to get
dbedd44e 2365 * responses back from the PF. Rather than busy-wait in probe and bog down the
5eae00c5
GR		 2366 * whole system, we'll do it in a task so we can sleep.
2367 * This task only runs during driver init. Once we've established
2368 * communications with the PF driver and set up our netdev, the watchdog
2369 * takes over.
2370 **/
2371static void i40evf_init_task(struct work_struct *work)
2372{
2373 struct i40evf_adapter *adapter = container_of(work,
2374 struct i40evf_adapter,
2375 init_task.work);
2376 struct net_device *netdev = adapter->netdev;
5eae00c5
GR		 2377 struct i40e_hw *hw = &adapter->hw;
2378 struct pci_dev *pdev = adapter->pdev;
e6d038de 2379 int err, bufsz;
5eae00c5
GR		 2380
2381 switch (adapter->state) {
2382 case __I40EVF_STARTUP:
2383 /* driver loaded, probe complete */
ef8693eb
MW		 2384 adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED;
2385 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
5eae00c5
GR		 2386 err = i40e_set_mac_type(hw);
2387 if (err) {
c2a137cb
MW		 2388 dev_err(&pdev->dev, "Failed to set MAC type (%d)\n",
2389 err);
2619ef47 2390 goto err;
5eae00c5
GR		 2391 }
2392 err = i40evf_check_reset_complete(hw);
2393 if (err) {
0d9c7ea8 2394 dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n",
75a64435 2395 err);
5eae00c5
GR		 2396 goto err;
2397 }
2398 hw->aq.num_arq_entries = I40EVF_AQ_LEN;
2399 hw->aq.num_asq_entries = I40EVF_AQ_LEN;
2400 hw->aq.arq_buf_size = I40EVF_MAX_AQ_BUF_SIZE;
2401 hw->aq.asq_buf_size = I40EVF_MAX_AQ_BUF_SIZE;
2402
2403 err = i40evf_init_adminq(hw);
2404 if (err) {
c2a137cb
MW		 2405 dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n",
2406 err);
5eae00c5
GR		 2407 goto err;
2408 }
2409 err = i40evf_send_api_ver(adapter);
2410 if (err) {
10bdd67b 2411 dev_err(&pdev->dev, "Unable to send to PF (%d)\n", err);
5eae00c5
GR		 2412 i40evf_shutdown_adminq(hw);
2413 goto err;
2414 }
2415 adapter->state = __I40EVF_INIT_VERSION_CHECK;
2416 goto restart;
5eae00c5 2417 case __I40EVF_INIT_VERSION_CHECK:
10bdd67b 2418 if (!i40evf_asq_done(hw)) {
80e72893 2419 dev_err(&pdev->dev, "Admin queue command never completed\n");
906a6937
MW		 2420 i40evf_shutdown_adminq(hw);
2421 adapter->state = __I40EVF_STARTUP;
5eae00c5 2422 goto err;
10bdd67b 2423 }
5eae00c5
GR		 2424
2425 /* aq msg sent, awaiting reply */
2426 err = i40evf_verify_api_ver(adapter);
2427 if (err) {
d4f82fd3 2428 if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK)
56f9920a 2429 err = i40evf_send_api_ver(adapter);
ee1693e5
MW		 2430 else
2431 dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n",
2432 adapter->pf_version.major,
2433 adapter->pf_version.minor,
2434 I40E_VIRTCHNL_VERSION_MAJOR,
2435 I40E_VIRTCHNL_VERSION_MINOR);
5eae00c5
GR		 2436 goto err;
2437 }
2438 err = i40evf_send_vf_config_msg(adapter);
2439 if (err) {
3f2ab172 2440 dev_err(&pdev->dev, "Unable to send config request (%d)\n",
5eae00c5
GR		 2441 err);
2442 goto err;
2443 }
2444 adapter->state = __I40EVF_INIT_GET_RESOURCES;
2445 goto restart;
5eae00c5
GR		 2446 case __I40EVF_INIT_GET_RESOURCES:
2447 /* aq msg sent, awaiting reply */
2448 if (!adapter->vf_res) {
2449 bufsz = sizeof(struct i40e_virtchnl_vf_resource) +
2450 (I40E_MAX_VF_VSI *
2451 sizeof(struct i40e_virtchnl_vsi_resource));
2452 adapter->vf_res = kzalloc(bufsz, GFP_KERNEL);
c2a137cb 2453 if (!adapter->vf_res)
5eae00c5 2454 goto err;
5eae00c5
GR		 2455 }
2456 err = i40evf_get_vf_config(adapter);
906a6937 2457 if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
906a6937
MW		 2458 err = i40evf_send_vf_config_msg(adapter);
2459 goto err;
e743072f
MW		 2460 } else if (err == I40E_ERR_PARAM) {
2461 /* We only get ERR_PARAM if the device is in a very bad
2462 * state or if we've been disabled for previous bad
2463 * behavior. Either way, we're done now.
2464 */
2465 i40evf_shutdown_adminq(hw);
2466 dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n");
2467 return;
906a6937 2468 }
5eae00c5 2469 if (err) {
c2a137cb
MW		 2470 dev_err(&pdev->dev, "Unable to get VF config (%d)\n",
2471 err);
5eae00c5
GR		 2472 goto err_alloc;
2473 }
2474 adapter->state = __I40EVF_INIT_SW;
2475 break;
2476 default:
2477 goto err_alloc;
2478 }
e6d038de 2479 if (i40evf_process_config(adapter))
5eae00c5 2480 goto err_alloc;
e6d038de 2481 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
5eae00c5
GR		 2482
2483 adapter->flags |= I40EVF_FLAG_RX_CSUM_ENABLED;
2484
5eae00c5
GR		 2485 netdev->netdev_ops = &i40evf_netdev_ops;
2486 i40evf_set_ethtool_ops(netdev);
2487 netdev->watchdog_timeo = 5 * HZ;
3415e8ce 2488
5eae00c5 2489 if (!is_valid_ether_addr(adapter->hw.mac.addr)) {
b34f90e7 2490 dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n",
c2a137cb 2491 adapter->hw.mac.addr);
14e52ee2
MW		 2492 eth_hw_addr_random(netdev);
2493 ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr);
2494 } else {
2495 adapter->flags |= I40EVF_FLAG_ADDR_SET_BY_PF;
2496 ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr);
2497 ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr);
5eae00c5 2498 }
5eae00c5 2499
5eae00c5
GR		 2500 init_timer(&adapter->watchdog_timer);
2501 adapter->watchdog_timer.function = &i40evf_watchdog_timer;
2502 adapter->watchdog_timer.data = (unsigned long)adapter;
2503 mod_timer(&adapter->watchdog_timer, jiffies + 1);
2504
cc052927
MW		 2505 adapter->num_active_queues = min_t(int,
2506 adapter->vsi_res->num_queue_pairs,
2507 (int)(num_online_cpus()));
d732a184
MW		 2508 adapter->tx_desc_count = I40EVF_DEFAULT_TXD;
2509 adapter->rx_desc_count = I40EVF_DEFAULT_RXD;
5eae00c5
GR		 2510 err = i40evf_init_interrupt_scheme(adapter);
2511 if (err)
2512 goto err_sw_init;
2513 i40evf_map_rings_to_vectors(adapter);
1f012279
ASJ		 2514 if (adapter->vf_res->vf_offload_flags &
2515 I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2516 adapter->flags |= I40EVF_FLAG_WB_ON_ITR_CAPABLE;
f6d83d13
ASJ		 2517
2518 if (adapter->vf_res->vf_offload_flags &
2519 I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2520 adapter->flags |= I40EVF_FLAG_WB_ON_ITR_CAPABLE;
2521
5eae00c5
GR		 2522 err = i40evf_request_misc_irq(adapter);
2523 if (err)
2524 goto err_sw_init;
2525
2526 netif_carrier_off(netdev);
2527
ef8693eb
MW		 2528 if (!adapter->netdev_registered) {
2529 err = register_netdev(netdev);
2530 if (err)
2531 goto err_register;
2532 }
5eae00c5
GR		 2533
2534 adapter->netdev_registered = true;
2535
2536 netif_tx_stop_all_queues(netdev);
2537
b34f90e7 2538 dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr);
5eae00c5
GR		 2539 if (netdev->features & NETIF_F_GRO)
2540 dev_info(&pdev->dev, "GRO is enabled\n");
2541
5eae00c5
GR		 2542 adapter->state = __I40EVF_DOWN;
2543 set_bit(__I40E_DOWN, &adapter->vsi.state);
2544 i40evf_misc_irq_enable(adapter);
e25d00b8
ASJ		 2545
2546 if (RSS_AQ(adapter)) {
2547 adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_RSS;
2548 mod_timer_pending(&adapter->watchdog_timer, jiffies + 1);
2549 } else {
96a81986 2550 i40evf_init_rss(adapter);
e25d00b8 2551 }
5eae00c5
GR		 2552 return;
2553restart:
3f7e5c33 2554 schedule_delayed_work(&adapter->init_task, msecs_to_jiffies(30));
5eae00c5
GR		 2555 return;
2556
2557err_register:
2558 i40evf_free_misc_irq(adapter);
2559err_sw_init:
2560 i40evf_reset_interrupt_capability(adapter);
5eae00c5
GR		 2561err_alloc:
2562 kfree(adapter->vf_res);
2563 adapter->vf_res = NULL;
2564err:
2565 /* Things went into the weeds, so try again later */
2566 if (++adapter->aq_wait_count > I40EVF_AQ_MAX_ERR) {
b9029e94 2567 dev_err(&pdev->dev, "Failed to communicate with PF; waiting before retry\n");
ef8693eb 2568 adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED;
b9029e94
MW		 2569 i40evf_shutdown_adminq(hw);
2570 adapter->state = __I40EVF_STARTUP;
2571 schedule_delayed_work(&adapter->init_task, HZ * 5);
2572 return;
5eae00c5 2573 }
3f7e5c33 2574 schedule_delayed_work(&adapter->init_task, HZ);
5eae00c5
GR		 2575}
2576
2577/**
2578 * i40evf_shutdown - Shutdown the device in preparation for a reboot
2579 * @pdev: pci device structure
2580 **/
2581static void i40evf_shutdown(struct pci_dev *pdev)
2582{
2583 struct net_device *netdev = pci_get_drvdata(pdev);
00293fdc 2584 struct i40evf_adapter *adapter = netdev_priv(netdev);
5eae00c5
GR		 2585
2586 netif_device_detach(netdev);
2587
2588 if (netif_running(netdev))
2589 i40evf_close(netdev);
2590
00293fdc
MW		 2591 /* Prevent the watchdog from running. */
2592 adapter->state = __I40EVF_REMOVE;
2593 adapter->aq_required = 0;
00293fdc 2594
5eae00c5
GR		 2595#ifdef CONFIG_PM
2596 pci_save_state(pdev);
2597
2598#endif
2599 pci_disable_device(pdev);
2600}
2601
2602/**
2603 * i40evf_probe - Device Initialization Routine
2604 * @pdev: PCI device information struct
2605 * @ent: entry in i40evf_pci_tbl
2606 *
2607 * Returns 0 on success, negative on failure
2608 *
2609 * i40evf_probe initializes an adapter identified by a pci_dev structure.
2610 * The OS initialization, configuring of the adapter private structure,
2611 * and a hardware reset occur.
2612 **/
2613static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2614{
2615 struct net_device *netdev;
2616 struct i40evf_adapter *adapter = NULL;
2617 struct i40e_hw *hw = NULL;
dbbd8111 2618 int err;
5eae00c5
GR		 2619
2620 err = pci_enable_device(pdev);
2621 if (err)
2622 return err;
2623
6494294f 2624 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
6494294f 2625 if (err) {
e3e3bfdd
JS		 2626 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
2627 if (err) {
2628 dev_err(&pdev->dev,
2629 "DMA configuration failed: 0x%x\n", err);
2630 goto err_dma;
2631 }
5eae00c5
GR		 2632 }
2633
2634 err = pci_request_regions(pdev, i40evf_driver_name);
2635 if (err) {
2636 dev_err(&pdev->dev,
2637 "pci_request_regions failed 0x%x\n", err);
2638 goto err_pci_reg;
2639 }
2640
2641 pci_enable_pcie_error_reporting(pdev);
2642
2643 pci_set_master(pdev);
2644
1255b7a1 2645 netdev = alloc_etherdev_mq(sizeof(struct i40evf_adapter), MAX_QUEUES);
5eae00c5
GR		 2646 if (!netdev) {
2647 err = -ENOMEM;
2648 goto err_alloc_etherdev;
2649 }
2650
2651 SET_NETDEV_DEV(netdev, &pdev->dev);
2652
2653 pci_set_drvdata(pdev, netdev);
2654 adapter = netdev_priv(netdev);
5eae00c5
GR		 2655
2656 adapter->netdev = netdev;
2657 adapter->pdev = pdev;
2658
2659 hw = &adapter->hw;
2660 hw->back = adapter;
2661
41a1d04b 2662 adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
5eae00c5
GR		 2663 adapter->state = __I40EVF_STARTUP;
2664
2665 /* Call save state here because it relies on the adapter struct. */
2666 pci_save_state(pdev);
2667
2668 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
2669 pci_resource_len(pdev, 0));
2670 if (!hw->hw_addr) {
2671 err = -EIO;
2672 goto err_ioremap;
2673 }
2674 hw->vendor_id = pdev->vendor;
2675 hw->device_id = pdev->device;
2676 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
2677 hw->subsystem_vendor_id = pdev->subsystem_vendor;
2678 hw->subsystem_device_id = pdev->subsystem_device;
2679 hw->bus.device = PCI_SLOT(pdev->devfn);
2680 hw->bus.func = PCI_FUNC(pdev->devfn);
2681
8ddb3326
JB		 2682 /* set up the locks for the AQ, do this only once in probe
2683 * and destroy them only once in remove
2684 */
2685 mutex_init(&hw->aq.asq_mutex);
2686 mutex_init(&hw->aq.arq_mutex);
2687
8bb1a540
SK		 2688 INIT_LIST_HEAD(&adapter->mac_filter_list);
2689 INIT_LIST_HEAD(&adapter->vlan_filter_list);
2690
5eae00c5
GR		 2691 INIT_WORK(&adapter->reset_task, i40evf_reset_task);
2692 INIT_WORK(&adapter->adminq_task, i40evf_adminq_task);
2693 INIT_WORK(&adapter->watchdog_task, i40evf_watchdog_task);
2694 INIT_DELAYED_WORK(&adapter->init_task, i40evf_init_task);
9b32b0b5
MW		 2695 schedule_delayed_work(&adapter->init_task,
2696 msecs_to_jiffies(5 * (pdev->devfn & 0x07)));
5eae00c5
GR		 2697
2698 return 0;
2699
2700err_ioremap:
2701 free_netdev(netdev);
2702err_alloc_etherdev:
2703 pci_release_regions(pdev);
2704err_pci_reg:
2705err_dma:
2706 pci_disable_device(pdev);
2707 return err;
2708}
2709
2710#ifdef CONFIG_PM
2711/**
2712 * i40evf_suspend - Power management suspend routine
2713 * @pdev: PCI device information struct
2714 * @state: unused
2715 *
2716 * Called when the system (VM) is entering sleep/suspend.
2717 **/
2718static int i40evf_suspend(struct pci_dev *pdev, pm_message_t state)
2719{
2720 struct net_device *netdev = pci_get_drvdata(pdev);
2721 struct i40evf_adapter *adapter = netdev_priv(netdev);
2722 int retval = 0;
2723
2724 netif_device_detach(netdev);
2725
2726 if (netif_running(netdev)) {
2727 rtnl_lock();
2728 i40evf_down(adapter);
2729 rtnl_unlock();
2730 }
2731 i40evf_free_misc_irq(adapter);
2732 i40evf_reset_interrupt_capability(adapter);
2733
2734 retval = pci_save_state(pdev);
2735 if (retval)
2736 return retval;
2737
2738 pci_disable_device(pdev);
2739
2740 return 0;
2741}
2742
2743/**
dbedd44e 2744 * i40evf_resume - Power management resume routine
5eae00c5
GR		 2745 * @pdev: PCI device information struct
2746 *
2747 * Called when the system (VM) is resumed from sleep/suspend.
2748 **/
2749static int i40evf_resume(struct pci_dev *pdev)
2750{
2751 struct i40evf_adapter *adapter = pci_get_drvdata(pdev);
2752 struct net_device *netdev = adapter->netdev;
2753 u32 err;
2754
2755 pci_set_power_state(pdev, PCI_D0);
2756 pci_restore_state(pdev);
2757 /* pci_restore_state clears dev->state_saved so call
2758 * pci_save_state to restore it.
2759 */
2760 pci_save_state(pdev);
2761
2762 err = pci_enable_device_mem(pdev);
2763 if (err) {
2764 dev_err(&pdev->dev, "Cannot enable PCI device from suspend.\n");
2765 return err;
2766 }
2767 pci_set_master(pdev);
2768
2769 rtnl_lock();
2770 err = i40evf_set_interrupt_capability(adapter);
2771 if (err) {
f2a1c368 2772 rtnl_unlock();
5eae00c5
GR		 2773 dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n");
2774 return err;
2775 }
2776 err = i40evf_request_misc_irq(adapter);
2777 rtnl_unlock();
2778 if (err) {
2779 dev_err(&pdev->dev, "Cannot get interrupt vector.\n");
2780 return err;
2781 }
2782
2783 schedule_work(&adapter->reset_task);
2784
2785 netif_device_attach(netdev);
2786
2787 return err;
2788}
2789
2790#endif /* CONFIG_PM */
2791/**
2792 * i40evf_remove - Device Removal Routine
2793 * @pdev: PCI device information struct
2794 *
2795 * i40evf_remove is called by the PCI subsystem to alert the driver
2796 * that it should release a PCI device. The could be caused by a
2797 * Hot-Plug event, or because the driver is going to be removed from
2798 * memory.
2799 **/
2800static void i40evf_remove(struct pci_dev *pdev)
2801{
2802 struct net_device *netdev = pci_get_drvdata(pdev);
2803 struct i40evf_adapter *adapter = netdev_priv(netdev);
6ba36a24 2804 struct i40evf_mac_filter *f, *ftmp;
5eae00c5
GR		 2805 struct i40e_hw *hw = &adapter->hw;
2806
2807 cancel_delayed_work_sync(&adapter->init_task);
ef8693eb 2808 cancel_work_sync(&adapter->reset_task);
5eae00c5
GR		 2809
2810 if (adapter->netdev_registered) {
2811 unregister_netdev(netdev);
2812 adapter->netdev_registered = false;
2813 }
53d0b3ae 2814
f4a71881 2815 /* Shut down all the garbage mashers on the detention level */
5eae00c5 2816 adapter->state = __I40EVF_REMOVE;
f4a71881 2817 adapter->aq_required = 0;
f4a71881
MW		 2818 i40evf_request_reset(adapter);
2819 msleep(20);
2820 /* If the FW isn't responding, kick it once, but only once. */
2821 if (!i40evf_asq_done(hw)) {
2822 i40evf_request_reset(adapter);
2823 msleep(20);
2824 }
5eae00c5 2825
dbb01c8a 2826 if (adapter->msix_entries) {
5eae00c5 2827 i40evf_misc_irq_disable(adapter);
5eae00c5 2828 i40evf_free_misc_irq(adapter);
5eae00c5 2829 i40evf_reset_interrupt_capability(adapter);
d31944d6 2830 i40evf_free_q_vectors(adapter);
5eae00c5
GR		 2831 }
2832
e5d17c3e
MW		 2833 if (adapter->watchdog_timer.function)
2834 del_timer_sync(&adapter->watchdog_timer);
2835
dbb01c8a
MW		 2836 flush_scheduled_work();
2837
66f9af85
HZ		 2838 /* Clear user configurations for RSS */
2839 i40evf_clear_rss_config_user(&adapter->vsi);
2840
5eae00c5
GR		 2841 if (hw->aq.asq.count)
2842 i40evf_shutdown_adminq(hw);
2843
8ddb3326
JB		 2844 /* destroy the locks only once, here */
2845 mutex_destroy(&hw->aq.arq_mutex);
2846 mutex_destroy(&hw->aq.asq_mutex);
2847
5eae00c5
GR		 2848 iounmap(hw->hw_addr);
2849 pci_release_regions(pdev);
2850
e284fc88
MW		 2851 i40evf_free_all_tx_resources(adapter);
2852 i40evf_free_all_rx_resources(adapter);
5eae00c5
GR		 2853 i40evf_free_queues(adapter);
2854 kfree(adapter->vf_res);
6ba36a24
MW		 2855 /* If we got removed before an up/down sequence, we've got a filter
2856 * hanging out there that we need to get rid of.
2857 */
2858 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
2859 list_del(&f->list);
2860 kfree(f);
2861 }
37dfdf37
MW		 2862 list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
2863 list_del(&f->list);
2864 kfree(f);
2865 }
5eae00c5
GR		 2866
2867 free_netdev(netdev);
2868
2869 pci_disable_pcie_error_reporting(pdev);
2870
2871 pci_disable_device(pdev);
2872}
2873
2874static struct pci_driver i40evf_driver = {
2875 .name = i40evf_driver_name,
2876 .id_table = i40evf_pci_tbl,
2877 .probe = i40evf_probe,
2878 .remove = i40evf_remove,
2879#ifdef CONFIG_PM
2880 .suspend = i40evf_suspend,
2881 .resume = i40evf_resume,
2882#endif
2883 .shutdown = i40evf_shutdown,
2884};
2885
2886/**
2887 * i40e_init_module - Driver Registration Routine
2888 *
2889 * i40e_init_module is the first routine called when the driver is
2890 * loaded. All it does is register with the PCI subsystem.
2891 **/
2892static int __init i40evf_init_module(void)
2893{
2894 int ret;
75a64435 2895
5eae00c5 2896 pr_info("i40evf: %s - version %s\n", i40evf_driver_string,
75a64435 2897 i40evf_driver_version);
5eae00c5
GR		 2898
2899 pr_info("%s\n", i40evf_copyright);
2900
2803b16c
JB		 2901 i40evf_wq = create_singlethread_workqueue(i40evf_driver_name);
2902 if (!i40evf_wq) {
2903 pr_err("%s: Failed to create workqueue\n", i40evf_driver_name);
2904 return -ENOMEM;
2905 }
5eae00c5
GR		 2906 ret = pci_register_driver(&i40evf_driver);
2907 return ret;
2908}
2909
2910module_init(i40evf_init_module);
2911
2912/**
2913 * i40e_exit_module - Driver Exit Cleanup Routine
2914 *
2915 * i40e_exit_module is called just before the driver is removed
2916 * from memory.
2917 **/
2918static void __exit i40evf_exit_module(void)
2919{
2920 pci_unregister_driver(&i40evf_driver);
2803b16c 2921 destroy_workqueue(i40evf_wq);
5eae00c5
GR		 2922}
2923
2924module_exit(i40evf_exit_module);
2925
2926/* i40evf_main.c */
Linux kernel - Deliverables
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