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5eae00c5 GR |
1 | /******************************************************************************* |
2 | * | |
3 | * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver | |
e1dfee8e | 4 | * Copyright(c) 2013 - 2014 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" | |
29 | static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter); | |
30 | static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter); | |
169f4076 MW |
31 | static void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter); |
32 | static void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter); | |
5eae00c5 GR |
33 | static int i40evf_close(struct net_device *netdev); |
34 | ||
35 | char i40evf_driver_name[] = "i40evf"; | |
36 | static const char i40evf_driver_string[] = | |
37 | "Intel(R) XL710 X710 Virtual Function Network Driver"; | |
38 | ||
ded7b9a3 | 39 | #define DRV_VERSION "0.9.23" |
5eae00c5 GR |
40 | const char i40evf_driver_version[] = DRV_VERSION; |
41 | static const char i40evf_copyright[] = | |
673f2ebf | 42 | "Copyright (c) 2013 - 2014 Intel Corporation."; |
5eae00c5 GR |
43 | |
44 | /* i40evf_pci_tbl - PCI Device ID Table | |
45 | * | |
46 | * Wildcard entries (PCI_ANY_ID) should come last | |
47 | * Last entry must be all 0s | |
48 | * | |
49 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
50 | * Class, Class Mask, private data (not used) } | |
51 | */ | |
52 | static DEFINE_PCI_DEVICE_TABLE(i40evf_pci_tbl) = { | |
ab60085e | 53 | {PCI_VDEVICE(INTEL, I40E_DEV_ID_VF), 0}, |
5eae00c5 GR |
54 | /* required last entry */ |
55 | {0, } | |
56 | }; | |
57 | ||
58 | MODULE_DEVICE_TABLE(pci, i40evf_pci_tbl); | |
59 | ||
60 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
61 | MODULE_DESCRIPTION("Intel(R) XL710 X710 Virtual Function Network Driver"); | |
62 | MODULE_LICENSE("GPL"); | |
63 | MODULE_VERSION(DRV_VERSION); | |
64 | ||
65 | /** | |
66 | * i40evf_allocate_dma_mem_d - OS specific memory alloc for shared code | |
67 | * @hw: pointer to the HW structure | |
68 | * @mem: ptr to mem struct to fill out | |
69 | * @size: size of memory requested | |
70 | * @alignment: what to align the allocation to | |
71 | **/ | |
72 | i40e_status i40evf_allocate_dma_mem_d(struct i40e_hw *hw, | |
73 | struct i40e_dma_mem *mem, | |
74 | u64 size, u32 alignment) | |
75 | { | |
76 | struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back; | |
77 | ||
78 | if (!mem) | |
79 | return I40E_ERR_PARAM; | |
80 | ||
81 | mem->size = ALIGN(size, alignment); | |
82 | mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size, | |
83 | (dma_addr_t *)&mem->pa, GFP_KERNEL); | |
84 | if (mem->va) | |
85 | return 0; | |
86 | else | |
87 | return I40E_ERR_NO_MEMORY; | |
88 | } | |
89 | ||
90 | /** | |
91 | * i40evf_free_dma_mem_d - OS specific memory free for shared code | |
92 | * @hw: pointer to the HW structure | |
93 | * @mem: ptr to mem struct to free | |
94 | **/ | |
95 | i40e_status i40evf_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem) | |
96 | { | |
97 | struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back; | |
98 | ||
99 | if (!mem || !mem->va) | |
100 | return I40E_ERR_PARAM; | |
101 | dma_free_coherent(&adapter->pdev->dev, mem->size, | |
102 | mem->va, (dma_addr_t)mem->pa); | |
103 | return 0; | |
104 | } | |
105 | ||
106 | /** | |
107 | * i40evf_allocate_virt_mem_d - OS specific memory alloc for shared code | |
108 | * @hw: pointer to the HW structure | |
109 | * @mem: ptr to mem struct to fill out | |
110 | * @size: size of memory requested | |
111 | **/ | |
112 | i40e_status i40evf_allocate_virt_mem_d(struct i40e_hw *hw, | |
113 | struct i40e_virt_mem *mem, u32 size) | |
114 | { | |
115 | if (!mem) | |
116 | return I40E_ERR_PARAM; | |
117 | ||
118 | mem->size = size; | |
119 | mem->va = kzalloc(size, GFP_KERNEL); | |
120 | ||
121 | if (mem->va) | |
122 | return 0; | |
123 | else | |
124 | return I40E_ERR_NO_MEMORY; | |
125 | } | |
126 | ||
127 | /** | |
128 | * i40evf_free_virt_mem_d - OS specific memory free for shared code | |
129 | * @hw: pointer to the HW structure | |
130 | * @mem: ptr to mem struct to free | |
131 | **/ | |
132 | i40e_status i40evf_free_virt_mem_d(struct i40e_hw *hw, | |
133 | struct i40e_virt_mem *mem) | |
134 | { | |
135 | if (!mem) | |
136 | return I40E_ERR_PARAM; | |
137 | ||
138 | /* it's ok to kfree a NULL pointer */ | |
139 | kfree(mem->va); | |
140 | ||
141 | return 0; | |
142 | } | |
143 | ||
144 | /** | |
145 | * i40evf_debug_d - OS dependent version of debug printing | |
146 | * @hw: pointer to the HW structure | |
147 | * @mask: debug level mask | |
148 | * @fmt_str: printf-type format description | |
149 | **/ | |
150 | void i40evf_debug_d(void *hw, u32 mask, char *fmt_str, ...) | |
151 | { | |
152 | char buf[512]; | |
153 | va_list argptr; | |
154 | ||
155 | if (!(mask & ((struct i40e_hw *)hw)->debug_mask)) | |
156 | return; | |
157 | ||
158 | va_start(argptr, fmt_str); | |
159 | vsnprintf(buf, sizeof(buf), fmt_str, argptr); | |
160 | va_end(argptr); | |
161 | ||
162 | /* the debug string is already formatted with a newline */ | |
163 | pr_info("%s", buf); | |
164 | } | |
165 | ||
166 | /** | |
167 | * i40evf_tx_timeout - Respond to a Tx Hang | |
168 | * @netdev: network interface device structure | |
169 | **/ | |
170 | static void i40evf_tx_timeout(struct net_device *netdev) | |
171 | { | |
172 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
173 | ||
174 | adapter->tx_timeout_count++; | |
625777e3 MW |
175 | dev_info(&adapter->pdev->dev, "TX timeout detected.\n"); |
176 | if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING)) { | |
3526d800 | 177 | adapter->flags |= I40EVF_FLAG_RESET_NEEDED; |
625777e3 MW |
178 | schedule_work(&adapter->reset_task); |
179 | } | |
5eae00c5 GR |
180 | } |
181 | ||
182 | /** | |
183 | * i40evf_misc_irq_disable - Mask off interrupt generation on the NIC | |
184 | * @adapter: board private structure | |
185 | **/ | |
186 | static void i40evf_misc_irq_disable(struct i40evf_adapter *adapter) | |
187 | { | |
188 | struct i40e_hw *hw = &adapter->hw; | |
189 | wr32(hw, I40E_VFINT_DYN_CTL01, 0); | |
190 | ||
191 | /* read flush */ | |
192 | rd32(hw, I40E_VFGEN_RSTAT); | |
193 | ||
194 | synchronize_irq(adapter->msix_entries[0].vector); | |
195 | } | |
196 | ||
197 | /** | |
198 | * i40evf_misc_irq_enable - Enable default interrupt generation settings | |
199 | * @adapter: board private structure | |
200 | **/ | |
201 | static void i40evf_misc_irq_enable(struct i40evf_adapter *adapter) | |
202 | { | |
203 | struct i40e_hw *hw = &adapter->hw; | |
204 | wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK | | |
205 | I40E_VFINT_DYN_CTL01_ITR_INDX_MASK); | |
206 | wr32(hw, I40E_VFINT_ICR0_ENA1, I40E_VFINT_ICR0_ENA_ADMINQ_MASK); | |
207 | ||
208 | /* read flush */ | |
209 | rd32(hw, I40E_VFGEN_RSTAT); | |
210 | } | |
211 | ||
212 | /** | |
213 | * i40evf_irq_disable - Mask off interrupt generation on the NIC | |
214 | * @adapter: board private structure | |
215 | **/ | |
216 | static void i40evf_irq_disable(struct i40evf_adapter *adapter) | |
217 | { | |
218 | int i; | |
219 | struct i40e_hw *hw = &adapter->hw; | |
220 | ||
dbb01c8a MW |
221 | if (!adapter->msix_entries) |
222 | return; | |
223 | ||
5eae00c5 GR |
224 | for (i = 1; i < adapter->num_msix_vectors; i++) { |
225 | wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), 0); | |
226 | synchronize_irq(adapter->msix_entries[i].vector); | |
227 | } | |
228 | /* read flush */ | |
229 | rd32(hw, I40E_VFGEN_RSTAT); | |
230 | ||
231 | } | |
232 | ||
233 | /** | |
234 | * i40evf_irq_enable_queues - Enable interrupt for specified queues | |
235 | * @adapter: board private structure | |
236 | * @mask: bitmap of queues to enable | |
237 | **/ | |
238 | void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask) | |
239 | { | |
240 | struct i40e_hw *hw = &adapter->hw; | |
241 | int i; | |
242 | ||
243 | for (i = 1; i < adapter->num_msix_vectors; i++) { | |
244 | if (mask & (1 << (i - 1))) { | |
245 | wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), | |
246 | I40E_VFINT_DYN_CTLN1_INTENA_MASK | | |
247 | I40E_VFINT_DYN_CTLN_CLEARPBA_MASK); | |
248 | } | |
249 | } | |
250 | } | |
251 | ||
252 | /** | |
253 | * i40evf_fire_sw_int - Generate SW interrupt for specified vectors | |
254 | * @adapter: board private structure | |
255 | * @mask: bitmap of vectors to trigger | |
256 | **/ | |
257 | static void i40evf_fire_sw_int(struct i40evf_adapter *adapter, | |
258 | u32 mask) | |
259 | { | |
260 | struct i40e_hw *hw = &adapter->hw; | |
261 | int i; | |
262 | uint32_t dyn_ctl; | |
263 | ||
264 | for (i = 1; i < adapter->num_msix_vectors; i++) { | |
265 | if (mask & (1 << i)) { | |
266 | dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTLN1(i - 1)); | |
267 | dyn_ctl |= I40E_VFINT_DYN_CTLN_SWINT_TRIG_MASK | | |
268 | I40E_VFINT_DYN_CTLN_CLEARPBA_MASK; | |
269 | wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), dyn_ctl); | |
270 | } | |
271 | } | |
272 | } | |
273 | ||
274 | /** | |
275 | * i40evf_irq_enable - Enable default interrupt generation settings | |
276 | * @adapter: board private structure | |
277 | **/ | |
278 | void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush) | |
279 | { | |
280 | struct i40e_hw *hw = &adapter->hw; | |
281 | ||
282 | i40evf_irq_enable_queues(adapter, ~0); | |
283 | ||
284 | if (flush) | |
285 | rd32(hw, I40E_VFGEN_RSTAT); | |
286 | } | |
287 | ||
288 | /** | |
289 | * i40evf_msix_aq - Interrupt handler for vector 0 | |
290 | * @irq: interrupt number | |
291 | * @data: pointer to netdev | |
292 | **/ | |
293 | static irqreturn_t i40evf_msix_aq(int irq, void *data) | |
294 | { | |
295 | struct net_device *netdev = data; | |
296 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
297 | struct i40e_hw *hw = &adapter->hw; | |
298 | u32 val; | |
299 | u32 ena_mask; | |
300 | ||
301 | /* handle non-queue interrupts */ | |
302 | val = rd32(hw, I40E_VFINT_ICR01); | |
303 | ena_mask = rd32(hw, I40E_VFINT_ICR0_ENA1); | |
304 | ||
305 | ||
306 | val = rd32(hw, I40E_VFINT_DYN_CTL01); | |
307 | val = val | I40E_PFINT_DYN_CTL0_CLEARPBA_MASK; | |
308 | wr32(hw, I40E_VFINT_DYN_CTL01, val); | |
309 | ||
310 | /* re-enable interrupt causes */ | |
311 | wr32(hw, I40E_VFINT_ICR0_ENA1, ena_mask); | |
312 | wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK); | |
313 | ||
314 | /* schedule work on the private workqueue */ | |
315 | schedule_work(&adapter->adminq_task); | |
316 | ||
317 | return IRQ_HANDLED; | |
318 | } | |
319 | ||
320 | /** | |
321 | * i40evf_msix_clean_rings - MSIX mode Interrupt Handler | |
322 | * @irq: interrupt number | |
323 | * @data: pointer to a q_vector | |
324 | **/ | |
325 | static irqreturn_t i40evf_msix_clean_rings(int irq, void *data) | |
326 | { | |
327 | struct i40e_q_vector *q_vector = data; | |
328 | ||
329 | if (!q_vector->tx.ring && !q_vector->rx.ring) | |
330 | return IRQ_HANDLED; | |
331 | ||
332 | napi_schedule(&q_vector->napi); | |
333 | ||
334 | return IRQ_HANDLED; | |
335 | } | |
336 | ||
337 | /** | |
338 | * i40evf_map_vector_to_rxq - associate irqs with rx queues | |
339 | * @adapter: board private structure | |
340 | * @v_idx: interrupt number | |
341 | * @r_idx: queue number | |
342 | **/ | |
343 | static void | |
344 | i40evf_map_vector_to_rxq(struct i40evf_adapter *adapter, int v_idx, int r_idx) | |
345 | { | |
346 | struct i40e_q_vector *q_vector = adapter->q_vector[v_idx]; | |
347 | struct i40e_ring *rx_ring = adapter->rx_rings[r_idx]; | |
348 | ||
349 | rx_ring->q_vector = q_vector; | |
350 | rx_ring->next = q_vector->rx.ring; | |
351 | rx_ring->vsi = &adapter->vsi; | |
352 | q_vector->rx.ring = rx_ring; | |
353 | q_vector->rx.count++; | |
354 | q_vector->rx.latency_range = I40E_LOW_LATENCY; | |
355 | } | |
356 | ||
357 | /** | |
358 | * i40evf_map_vector_to_txq - associate irqs with tx queues | |
359 | * @adapter: board private structure | |
360 | * @v_idx: interrupt number | |
361 | * @t_idx: queue number | |
362 | **/ | |
363 | static void | |
364 | i40evf_map_vector_to_txq(struct i40evf_adapter *adapter, int v_idx, int t_idx) | |
365 | { | |
366 | struct i40e_q_vector *q_vector = adapter->q_vector[v_idx]; | |
367 | struct i40e_ring *tx_ring = adapter->tx_rings[t_idx]; | |
368 | ||
369 | tx_ring->q_vector = q_vector; | |
370 | tx_ring->next = q_vector->tx.ring; | |
371 | tx_ring->vsi = &adapter->vsi; | |
372 | q_vector->tx.ring = tx_ring; | |
373 | q_vector->tx.count++; | |
374 | q_vector->tx.latency_range = I40E_LOW_LATENCY; | |
375 | q_vector->num_ringpairs++; | |
376 | q_vector->ring_mask |= (1 << t_idx); | |
377 | } | |
378 | ||
379 | /** | |
380 | * i40evf_map_rings_to_vectors - Maps descriptor rings to vectors | |
381 | * @adapter: board private structure to initialize | |
382 | * | |
383 | * This function maps descriptor rings to the queue-specific vectors | |
384 | * we were allotted through the MSI-X enabling code. Ideally, we'd have | |
385 | * one vector per ring/queue, but on a constrained vector budget, we | |
386 | * group the rings as "efficiently" as possible. You would add new | |
387 | * mapping configurations in here. | |
388 | **/ | |
389 | static int i40evf_map_rings_to_vectors(struct i40evf_adapter *adapter) | |
390 | { | |
391 | int q_vectors; | |
392 | int v_start = 0; | |
393 | int rxr_idx = 0, txr_idx = 0; | |
394 | int rxr_remaining = adapter->vsi_res->num_queue_pairs; | |
395 | int txr_remaining = adapter->vsi_res->num_queue_pairs; | |
396 | int i, j; | |
397 | int rqpv, tqpv; | |
398 | int err = 0; | |
399 | ||
400 | q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
401 | ||
402 | /* The ideal configuration... | |
403 | * We have enough vectors to map one per queue. | |
404 | */ | |
405 | if (q_vectors == (rxr_remaining * 2)) { | |
406 | for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++) | |
407 | i40evf_map_vector_to_rxq(adapter, v_start, rxr_idx); | |
408 | ||
409 | for (; txr_idx < txr_remaining; v_start++, txr_idx++) | |
410 | i40evf_map_vector_to_txq(adapter, v_start, txr_idx); | |
411 | goto out; | |
412 | } | |
413 | ||
414 | /* If we don't have enough vectors for a 1-to-1 | |
415 | * mapping, we'll have to group them so there are | |
416 | * multiple queues per vector. | |
417 | * Re-adjusting *qpv takes care of the remainder. | |
418 | */ | |
419 | for (i = v_start; i < q_vectors; i++) { | |
420 | rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i); | |
421 | for (j = 0; j < rqpv; j++) { | |
422 | i40evf_map_vector_to_rxq(adapter, i, rxr_idx); | |
423 | rxr_idx++; | |
424 | rxr_remaining--; | |
425 | } | |
426 | } | |
427 | for (i = v_start; i < q_vectors; i++) { | |
428 | tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i); | |
429 | for (j = 0; j < tqpv; j++) { | |
430 | i40evf_map_vector_to_txq(adapter, i, txr_idx); | |
431 | txr_idx++; | |
432 | txr_remaining--; | |
433 | } | |
434 | } | |
435 | ||
436 | out: | |
437 | adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS; | |
438 | ||
439 | return err; | |
440 | } | |
441 | ||
442 | /** | |
443 | * i40evf_request_traffic_irqs - Initialize MSI-X interrupts | |
444 | * @adapter: board private structure | |
445 | * | |
446 | * Allocates MSI-X vectors for tx and rx handling, and requests | |
447 | * interrupts from the kernel. | |
448 | **/ | |
449 | static int | |
450 | i40evf_request_traffic_irqs(struct i40evf_adapter *adapter, char *basename) | |
451 | { | |
452 | int vector, err, q_vectors; | |
453 | int rx_int_idx = 0, tx_int_idx = 0; | |
454 | ||
455 | i40evf_irq_disable(adapter); | |
456 | /* Decrement for Other and TCP Timer vectors */ | |
457 | q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
458 | ||
459 | for (vector = 0; vector < q_vectors; vector++) { | |
460 | struct i40e_q_vector *q_vector = adapter->q_vector[vector]; | |
461 | ||
462 | if (q_vector->tx.ring && q_vector->rx.ring) { | |
463 | snprintf(q_vector->name, sizeof(q_vector->name) - 1, | |
464 | "i40evf-%s-%s-%d", basename, | |
465 | "TxRx", rx_int_idx++); | |
466 | tx_int_idx++; | |
467 | } else if (q_vector->rx.ring) { | |
468 | snprintf(q_vector->name, sizeof(q_vector->name) - 1, | |
469 | "i40evf-%s-%s-%d", basename, | |
470 | "rx", rx_int_idx++); | |
471 | } else if (q_vector->tx.ring) { | |
472 | snprintf(q_vector->name, sizeof(q_vector->name) - 1, | |
473 | "i40evf-%s-%s-%d", basename, | |
474 | "tx", tx_int_idx++); | |
475 | } else { | |
476 | /* skip this unused q_vector */ | |
477 | continue; | |
478 | } | |
479 | err = request_irq( | |
480 | adapter->msix_entries[vector + NONQ_VECS].vector, | |
481 | i40evf_msix_clean_rings, | |
482 | 0, | |
483 | q_vector->name, | |
484 | q_vector); | |
485 | if (err) { | |
486 | dev_info(&adapter->pdev->dev, | |
487 | "%s: request_irq failed, error: %d\n", | |
488 | __func__, err); | |
489 | goto free_queue_irqs; | |
490 | } | |
491 | /* assign the mask for this irq */ | |
492 | irq_set_affinity_hint( | |
493 | adapter->msix_entries[vector + NONQ_VECS].vector, | |
494 | q_vector->affinity_mask); | |
495 | } | |
496 | ||
497 | return 0; | |
498 | ||
499 | free_queue_irqs: | |
500 | while (vector) { | |
501 | vector--; | |
502 | irq_set_affinity_hint( | |
503 | adapter->msix_entries[vector + NONQ_VECS].vector, | |
504 | NULL); | |
505 | free_irq(adapter->msix_entries[vector + NONQ_VECS].vector, | |
506 | adapter->q_vector[vector]); | |
507 | } | |
508 | return err; | |
509 | } | |
510 | ||
511 | /** | |
512 | * i40evf_request_misc_irq - Initialize MSI-X interrupts | |
513 | * @adapter: board private structure | |
514 | * | |
515 | * Allocates MSI-X vector 0 and requests interrupts from the kernel. This | |
516 | * vector is only for the admin queue, and stays active even when the netdev | |
517 | * is closed. | |
518 | **/ | |
519 | static int i40evf_request_misc_irq(struct i40evf_adapter *adapter) | |
520 | { | |
521 | struct net_device *netdev = adapter->netdev; | |
522 | int err; | |
523 | ||
e1dfee8e | 524 | sprintf(adapter->misc_vector_name, "i40evf:mbx"); |
5eae00c5 | 525 | err = request_irq(adapter->msix_entries[0].vector, |
e1dfee8e MW |
526 | &i40evf_msix_aq, 0, |
527 | adapter->misc_vector_name, netdev); | |
5eae00c5 GR |
528 | if (err) { |
529 | dev_err(&adapter->pdev->dev, | |
77fa28be CS |
530 | "request_irq for %s failed: %d\n", |
531 | adapter->misc_vector_name, err); | |
5eae00c5 GR |
532 | free_irq(adapter->msix_entries[0].vector, netdev); |
533 | } | |
534 | return err; | |
535 | } | |
536 | ||
537 | /** | |
538 | * i40evf_free_traffic_irqs - Free MSI-X interrupts | |
539 | * @adapter: board private structure | |
540 | * | |
541 | * Frees all MSI-X vectors other than 0. | |
542 | **/ | |
543 | static void i40evf_free_traffic_irqs(struct i40evf_adapter *adapter) | |
544 | { | |
545 | int i; | |
546 | int q_vectors; | |
547 | q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
548 | ||
549 | for (i = 0; i < q_vectors; i++) { | |
550 | irq_set_affinity_hint(adapter->msix_entries[i+1].vector, | |
551 | NULL); | |
552 | free_irq(adapter->msix_entries[i+1].vector, | |
553 | adapter->q_vector[i]); | |
554 | } | |
555 | } | |
556 | ||
557 | /** | |
558 | * i40evf_free_misc_irq - Free MSI-X miscellaneous vector | |
559 | * @adapter: board private structure | |
560 | * | |
561 | * Frees MSI-X vector 0. | |
562 | **/ | |
563 | static void i40evf_free_misc_irq(struct i40evf_adapter *adapter) | |
564 | { | |
565 | struct net_device *netdev = adapter->netdev; | |
566 | ||
567 | free_irq(adapter->msix_entries[0].vector, netdev); | |
568 | } | |
569 | ||
570 | /** | |
571 | * i40evf_configure_tx - Configure Transmit Unit after Reset | |
572 | * @adapter: board private structure | |
573 | * | |
574 | * Configure the Tx unit of the MAC after a reset. | |
575 | **/ | |
576 | static void i40evf_configure_tx(struct i40evf_adapter *adapter) | |
577 | { | |
578 | struct i40e_hw *hw = &adapter->hw; | |
579 | int i; | |
580 | for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) | |
581 | adapter->tx_rings[i]->tail = hw->hw_addr + I40E_QTX_TAIL1(i); | |
582 | } | |
583 | ||
584 | /** | |
585 | * i40evf_configure_rx - Configure Receive Unit after Reset | |
586 | * @adapter: board private structure | |
587 | * | |
588 | * Configure the Rx unit of the MAC after a reset. | |
589 | **/ | |
590 | static void i40evf_configure_rx(struct i40evf_adapter *adapter) | |
591 | { | |
592 | struct i40e_hw *hw = &adapter->hw; | |
593 | struct net_device *netdev = adapter->netdev; | |
594 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
595 | int i; | |
596 | int rx_buf_len; | |
597 | ||
598 | ||
599 | adapter->flags &= ~I40EVF_FLAG_RX_PS_CAPABLE; | |
600 | adapter->flags |= I40EVF_FLAG_RX_1BUF_CAPABLE; | |
601 | ||
602 | /* Decide whether to use packet split mode or not */ | |
603 | if (netdev->mtu > ETH_DATA_LEN) { | |
604 | if (adapter->flags & I40EVF_FLAG_RX_PS_CAPABLE) | |
605 | adapter->flags |= I40EVF_FLAG_RX_PS_ENABLED; | |
606 | else | |
607 | adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED; | |
608 | } else { | |
609 | if (adapter->flags & I40EVF_FLAG_RX_1BUF_CAPABLE) | |
610 | adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED; | |
611 | else | |
612 | adapter->flags |= I40EVF_FLAG_RX_PS_ENABLED; | |
613 | } | |
614 | ||
615 | /* Set the RX buffer length according to the mode */ | |
616 | if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED) { | |
617 | rx_buf_len = I40E_RX_HDR_SIZE; | |
618 | } else { | |
619 | if (netdev->mtu <= ETH_DATA_LEN) | |
620 | rx_buf_len = I40EVF_RXBUFFER_2048; | |
621 | else | |
622 | rx_buf_len = ALIGN(max_frame, 1024); | |
623 | } | |
624 | ||
625 | for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) { | |
626 | adapter->rx_rings[i]->tail = hw->hw_addr + I40E_QRX_TAIL1(i); | |
627 | adapter->rx_rings[i]->rx_buf_len = rx_buf_len; | |
628 | } | |
629 | } | |
630 | ||
631 | /** | |
632 | * i40evf_find_vlan - Search filter list for specific vlan filter | |
633 | * @adapter: board private structure | |
634 | * @vlan: vlan tag | |
635 | * | |
636 | * Returns ptr to the filter object or NULL | |
637 | **/ | |
638 | static struct | |
639 | i40evf_vlan_filter *i40evf_find_vlan(struct i40evf_adapter *adapter, u16 vlan) | |
640 | { | |
641 | struct i40evf_vlan_filter *f; | |
642 | ||
643 | list_for_each_entry(f, &adapter->vlan_filter_list, list) { | |
644 | if (vlan == f->vlan) | |
645 | return f; | |
646 | } | |
647 | return NULL; | |
648 | } | |
649 | ||
650 | /** | |
651 | * i40evf_add_vlan - Add a vlan filter to the list | |
652 | * @adapter: board private structure | |
653 | * @vlan: VLAN tag | |
654 | * | |
655 | * Returns ptr to the filter object or NULL when no memory available. | |
656 | **/ | |
657 | static struct | |
658 | i40evf_vlan_filter *i40evf_add_vlan(struct i40evf_adapter *adapter, u16 vlan) | |
659 | { | |
660 | struct i40evf_vlan_filter *f; | |
661 | ||
662 | f = i40evf_find_vlan(adapter, vlan); | |
663 | if (NULL == f) { | |
664 | f = kzalloc(sizeof(*f), GFP_ATOMIC); | |
665 | if (NULL == f) { | |
666 | dev_info(&adapter->pdev->dev, | |
667 | "%s: no memory for new VLAN filter\n", | |
668 | __func__); | |
669 | return NULL; | |
670 | } | |
671 | f->vlan = vlan; | |
672 | ||
673 | INIT_LIST_HEAD(&f->list); | |
674 | list_add(&f->list, &adapter->vlan_filter_list); | |
675 | f->add = true; | |
676 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER; | |
677 | } | |
678 | ||
679 | return f; | |
680 | } | |
681 | ||
682 | /** | |
683 | * i40evf_del_vlan - Remove a vlan filter from the list | |
684 | * @adapter: board private structure | |
685 | * @vlan: VLAN tag | |
686 | **/ | |
687 | static void i40evf_del_vlan(struct i40evf_adapter *adapter, u16 vlan) | |
688 | { | |
689 | struct i40evf_vlan_filter *f; | |
690 | ||
691 | f = i40evf_find_vlan(adapter, vlan); | |
692 | if (f) { | |
693 | f->remove = true; | |
694 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER; | |
695 | } | |
5eae00c5 GR |
696 | } |
697 | ||
698 | /** | |
699 | * i40evf_vlan_rx_add_vid - Add a VLAN filter to a device | |
700 | * @netdev: network device struct | |
701 | * @vid: VLAN tag | |
702 | **/ | |
703 | static int i40evf_vlan_rx_add_vid(struct net_device *netdev, | |
704 | __always_unused __be16 proto, u16 vid) | |
705 | { | |
706 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
707 | ||
708 | if (i40evf_add_vlan(adapter, vid) == NULL) | |
709 | return -ENOMEM; | |
710 | return 0; | |
711 | } | |
712 | ||
713 | /** | |
714 | * i40evf_vlan_rx_kill_vid - Remove a VLAN filter from a device | |
715 | * @netdev: network device struct | |
716 | * @vid: VLAN tag | |
717 | **/ | |
718 | static int i40evf_vlan_rx_kill_vid(struct net_device *netdev, | |
719 | __always_unused __be16 proto, u16 vid) | |
720 | { | |
721 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
722 | ||
723 | i40evf_del_vlan(adapter, vid); | |
724 | return 0; | |
725 | } | |
726 | ||
727 | /** | |
728 | * i40evf_find_filter - Search filter list for specific mac filter | |
729 | * @adapter: board private structure | |
730 | * @macaddr: the MAC address | |
731 | * | |
732 | * Returns ptr to the filter object or NULL | |
733 | **/ | |
734 | static struct | |
735 | i40evf_mac_filter *i40evf_find_filter(struct i40evf_adapter *adapter, | |
736 | u8 *macaddr) | |
737 | { | |
738 | struct i40evf_mac_filter *f; | |
739 | ||
740 | if (!macaddr) | |
741 | return NULL; | |
742 | ||
743 | list_for_each_entry(f, &adapter->mac_filter_list, list) { | |
744 | if (ether_addr_equal(macaddr, f->macaddr)) | |
745 | return f; | |
746 | } | |
747 | return NULL; | |
748 | } | |
749 | ||
750 | /** | |
751 | * i40e_add_filter - Add a mac filter to the filter list | |
752 | * @adapter: board private structure | |
753 | * @macaddr: the MAC address | |
754 | * | |
755 | * Returns ptr to the filter object or NULL when no memory available. | |
756 | **/ | |
757 | static struct | |
758 | i40evf_mac_filter *i40evf_add_filter(struct i40evf_adapter *adapter, | |
759 | u8 *macaddr) | |
760 | { | |
761 | struct i40evf_mac_filter *f; | |
762 | ||
763 | if (!macaddr) | |
764 | return NULL; | |
765 | ||
766 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
767 | &adapter->crit_section)) | |
768 | mdelay(1); | |
769 | ||
770 | f = i40evf_find_filter(adapter, macaddr); | |
771 | if (NULL == f) { | |
772 | f = kzalloc(sizeof(*f), GFP_ATOMIC); | |
773 | if (NULL == f) { | |
774 | dev_info(&adapter->pdev->dev, | |
775 | "%s: no memory for new filter\n", __func__); | |
776 | clear_bit(__I40EVF_IN_CRITICAL_TASK, | |
777 | &adapter->crit_section); | |
778 | return NULL; | |
779 | } | |
780 | ||
781 | memcpy(f->macaddr, macaddr, ETH_ALEN); | |
782 | ||
783 | list_add(&f->list, &adapter->mac_filter_list); | |
784 | f->add = true; | |
785 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; | |
786 | } | |
787 | ||
788 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
789 | return f; | |
790 | } | |
791 | ||
792 | /** | |
793 | * i40evf_set_mac - NDO callback to set port mac address | |
794 | * @netdev: network interface device structure | |
795 | * @p: pointer to an address structure | |
796 | * | |
797 | * Returns 0 on success, negative on failure | |
798 | **/ | |
799 | static int i40evf_set_mac(struct net_device *netdev, void *p) | |
800 | { | |
801 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
802 | struct i40e_hw *hw = &adapter->hw; | |
803 | struct i40evf_mac_filter *f; | |
804 | struct sockaddr *addr = p; | |
805 | ||
806 | if (!is_valid_ether_addr(addr->sa_data)) | |
807 | return -EADDRNOTAVAIL; | |
808 | ||
809 | if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) | |
810 | return 0; | |
811 | ||
812 | f = i40evf_add_filter(adapter, addr->sa_data); | |
813 | if (f) { | |
814 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); | |
815 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, | |
816 | netdev->addr_len); | |
817 | } | |
818 | ||
819 | return (f == NULL) ? -ENOMEM : 0; | |
820 | } | |
821 | ||
822 | /** | |
823 | * i40evf_set_rx_mode - NDO callback to set the netdev filters | |
824 | * @netdev: network interface device structure | |
825 | **/ | |
826 | static void i40evf_set_rx_mode(struct net_device *netdev) | |
827 | { | |
828 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
829 | struct i40evf_mac_filter *f, *ftmp; | |
830 | struct netdev_hw_addr *uca; | |
831 | struct netdev_hw_addr *mca; | |
832 | ||
833 | /* add addr if not already in the filter list */ | |
834 | netdev_for_each_uc_addr(uca, netdev) { | |
835 | i40evf_add_filter(adapter, uca->addr); | |
836 | } | |
837 | netdev_for_each_mc_addr(mca, netdev) { | |
838 | i40evf_add_filter(adapter, mca->addr); | |
839 | } | |
840 | ||
841 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
842 | &adapter->crit_section)) | |
843 | mdelay(1); | |
844 | /* remove filter if not in netdev list */ | |
845 | list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { | |
846 | bool found = false; | |
847 | ||
dc5f2de6 | 848 | if (is_multicast_ether_addr(f->macaddr)) { |
5eae00c5 GR |
849 | netdev_for_each_mc_addr(mca, netdev) { |
850 | if (ether_addr_equal(mca->addr, f->macaddr)) { | |
851 | found = true; | |
852 | break; | |
853 | } | |
854 | } | |
855 | } else { | |
856 | netdev_for_each_uc_addr(uca, netdev) { | |
857 | if (ether_addr_equal(uca->addr, f->macaddr)) { | |
858 | found = true; | |
859 | break; | |
860 | } | |
861 | } | |
862 | } | |
863 | if (found) { | |
864 | f->remove = true; | |
865 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; | |
866 | } | |
867 | } | |
868 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
869 | } | |
870 | ||
871 | /** | |
872 | * i40evf_napi_enable_all - enable NAPI on all queue vectors | |
873 | * @adapter: board private structure | |
874 | **/ | |
875 | static void i40evf_napi_enable_all(struct i40evf_adapter *adapter) | |
876 | { | |
877 | int q_idx; | |
878 | struct i40e_q_vector *q_vector; | |
879 | int q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
880 | ||
881 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
882 | struct napi_struct *napi; | |
883 | q_vector = adapter->q_vector[q_idx]; | |
884 | napi = &q_vector->napi; | |
885 | napi_enable(napi); | |
886 | } | |
887 | } | |
888 | ||
889 | /** | |
890 | * i40evf_napi_disable_all - disable NAPI on all queue vectors | |
891 | * @adapter: board private structure | |
892 | **/ | |
893 | static void i40evf_napi_disable_all(struct i40evf_adapter *adapter) | |
894 | { | |
895 | int q_idx; | |
896 | struct i40e_q_vector *q_vector; | |
897 | int q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
898 | ||
899 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
900 | q_vector = adapter->q_vector[q_idx]; | |
901 | napi_disable(&q_vector->napi); | |
902 | } | |
903 | } | |
904 | ||
905 | /** | |
906 | * i40evf_configure - set up transmit and receive data structures | |
907 | * @adapter: board private structure | |
908 | **/ | |
909 | static void i40evf_configure(struct i40evf_adapter *adapter) | |
910 | { | |
911 | struct net_device *netdev = adapter->netdev; | |
912 | int i; | |
913 | ||
914 | i40evf_set_rx_mode(netdev); | |
915 | ||
916 | i40evf_configure_tx(adapter); | |
917 | i40evf_configure_rx(adapter); | |
918 | adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES; | |
919 | ||
920 | for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) { | |
921 | struct i40e_ring *ring = adapter->rx_rings[i]; | |
922 | i40evf_alloc_rx_buffers(ring, ring->count); | |
923 | ring->next_to_use = ring->count - 1; | |
924 | writel(ring->next_to_use, ring->tail); | |
925 | } | |
926 | } | |
927 | ||
928 | /** | |
929 | * i40evf_up_complete - Finish the last steps of bringing up a connection | |
930 | * @adapter: board private structure | |
931 | **/ | |
932 | static int i40evf_up_complete(struct i40evf_adapter *adapter) | |
933 | { | |
934 | adapter->state = __I40EVF_RUNNING; | |
935 | clear_bit(__I40E_DOWN, &adapter->vsi.state); | |
936 | ||
937 | i40evf_napi_enable_all(adapter); | |
938 | ||
939 | adapter->aq_required |= I40EVF_FLAG_AQ_ENABLE_QUEUES; | |
940 | mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); | |
941 | return 0; | |
942 | } | |
943 | ||
944 | /** | |
945 | * i40evf_clean_all_rx_rings - Free Rx Buffers for all queues | |
946 | * @adapter: board private structure | |
947 | **/ | |
948 | static void i40evf_clean_all_rx_rings(struct i40evf_adapter *adapter) | |
949 | { | |
950 | int i; | |
951 | ||
952 | for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) | |
953 | i40evf_clean_rx_ring(adapter->rx_rings[i]); | |
954 | } | |
955 | ||
956 | /** | |
957 | * i40evf_clean_all_tx_rings - Free Tx Buffers for all queues | |
958 | * @adapter: board private structure | |
959 | **/ | |
960 | static void i40evf_clean_all_tx_rings(struct i40evf_adapter *adapter) | |
961 | { | |
962 | int i; | |
963 | ||
964 | for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) | |
965 | i40evf_clean_tx_ring(adapter->tx_rings[i]); | |
966 | } | |
967 | ||
968 | /** | |
969 | * i40e_down - Shutdown the connection processing | |
970 | * @adapter: board private structure | |
971 | **/ | |
972 | void i40evf_down(struct i40evf_adapter *adapter) | |
973 | { | |
974 | struct net_device *netdev = adapter->netdev; | |
975 | struct i40evf_mac_filter *f; | |
976 | ||
ef8693eb | 977 | /* remove all MAC filters */ |
5eae00c5 GR |
978 | list_for_each_entry(f, &adapter->mac_filter_list, list) { |
979 | f->remove = true; | |
980 | } | |
ed1f5b58 MW |
981 | /* remove all VLAN filters */ |
982 | list_for_each_entry(f, &adapter->vlan_filter_list, list) { | |
983 | f->remove = true; | |
984 | } | |
ef8693eb MW |
985 | if (!(adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) && |
986 | adapter->state != __I40EVF_RESETTING) { | |
987 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; | |
ed1f5b58 | 988 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER; |
ef8693eb MW |
989 | /* disable receives */ |
990 | adapter->aq_required |= I40EVF_FLAG_AQ_DISABLE_QUEUES; | |
991 | mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); | |
992 | msleep(20); | |
993 | } | |
5eae00c5 GR |
994 | netif_tx_disable(netdev); |
995 | ||
996 | netif_tx_stop_all_queues(netdev); | |
997 | ||
998 | i40evf_irq_disable(adapter); | |
999 | ||
1000 | i40evf_napi_disable_all(adapter); | |
1001 | ||
1002 | netif_carrier_off(netdev); | |
1003 | ||
1004 | i40evf_clean_all_tx_rings(adapter); | |
1005 | i40evf_clean_all_rx_rings(adapter); | |
1006 | } | |
1007 | ||
1008 | /** | |
1009 | * i40evf_acquire_msix_vectors - Setup the MSIX capability | |
1010 | * @adapter: board private structure | |
1011 | * @vectors: number of vectors to request | |
1012 | * | |
1013 | * Work with the OS to set up the MSIX vectors needed. | |
1014 | * | |
1015 | * Returns 0 on success, negative on failure | |
1016 | **/ | |
1017 | static int | |
1018 | i40evf_acquire_msix_vectors(struct i40evf_adapter *adapter, int vectors) | |
1019 | { | |
1020 | int err, vector_threshold; | |
1021 | ||
1022 | /* We'll want at least 3 (vector_threshold): | |
1023 | * 0) Other (Admin Queue and link, mostly) | |
1024 | * 1) TxQ[0] Cleanup | |
1025 | * 2) RxQ[0] Cleanup | |
1026 | */ | |
1027 | vector_threshold = MIN_MSIX_COUNT; | |
1028 | ||
1029 | /* The more we get, the more we will assign to Tx/Rx Cleanup | |
1030 | * for the separate queues...where Rx Cleanup >= Tx Cleanup. | |
1031 | * Right now, we simply care about how many we'll get; we'll | |
1032 | * set them up later while requesting irq's. | |
1033 | */ | |
fc2f2f5d AG |
1034 | err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries, |
1035 | vector_threshold, vectors); | |
1036 | if (err < 0) { | |
5eae00c5 GR |
1037 | dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts.\n"); |
1038 | kfree(adapter->msix_entries); | |
1039 | adapter->msix_entries = NULL; | |
fc2f2f5d | 1040 | return err; |
5eae00c5 | 1041 | } |
fc2f2f5d AG |
1042 | |
1043 | /* Adjust for only the vectors we'll use, which is minimum | |
1044 | * of max_msix_q_vectors + NONQ_VECS, or the number of | |
1045 | * vectors we were allocated. | |
1046 | */ | |
1047 | adapter->num_msix_vectors = err; | |
1048 | return 0; | |
5eae00c5 GR |
1049 | } |
1050 | ||
1051 | /** | |
1052 | * i40evf_free_queues - Free memory for all rings | |
1053 | * @adapter: board private structure to initialize | |
1054 | * | |
1055 | * Free all of the memory associated with queue pairs. | |
1056 | **/ | |
1057 | static void i40evf_free_queues(struct i40evf_adapter *adapter) | |
1058 | { | |
1059 | int i; | |
1060 | ||
1061 | if (!adapter->vsi_res) | |
1062 | return; | |
1063 | for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) { | |
1064 | if (adapter->tx_rings[i]) | |
1065 | kfree_rcu(adapter->tx_rings[i], rcu); | |
1066 | adapter->tx_rings[i] = NULL; | |
1067 | adapter->rx_rings[i] = NULL; | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | /** | |
1072 | * i40evf_alloc_queues - Allocate memory for all rings | |
1073 | * @adapter: board private structure to initialize | |
1074 | * | |
1075 | * We allocate one ring per queue at run-time since we don't know the | |
1076 | * number of queues at compile-time. The polling_netdev array is | |
1077 | * intended for Multiqueue, but should work fine with a single queue. | |
1078 | **/ | |
1079 | static int i40evf_alloc_queues(struct i40evf_adapter *adapter) | |
1080 | { | |
1081 | int i; | |
1082 | ||
1083 | for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) { | |
1084 | struct i40e_ring *tx_ring; | |
1085 | struct i40e_ring *rx_ring; | |
1086 | ||
1087 | tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL); | |
1088 | if (!tx_ring) | |
1089 | goto err_out; | |
1090 | ||
1091 | tx_ring->queue_index = i; | |
1092 | tx_ring->netdev = adapter->netdev; | |
1093 | tx_ring->dev = &adapter->pdev->dev; | |
d732a184 | 1094 | tx_ring->count = adapter->tx_desc_count; |
5eae00c5 GR |
1095 | adapter->tx_rings[i] = tx_ring; |
1096 | ||
1097 | rx_ring = &tx_ring[1]; | |
1098 | rx_ring->queue_index = i; | |
1099 | rx_ring->netdev = adapter->netdev; | |
1100 | rx_ring->dev = &adapter->pdev->dev; | |
d732a184 | 1101 | rx_ring->count = adapter->rx_desc_count; |
5eae00c5 GR |
1102 | adapter->rx_rings[i] = rx_ring; |
1103 | } | |
1104 | ||
1105 | return 0; | |
1106 | ||
1107 | err_out: | |
1108 | i40evf_free_queues(adapter); | |
1109 | return -ENOMEM; | |
1110 | } | |
1111 | ||
1112 | /** | |
1113 | * i40evf_set_interrupt_capability - set MSI-X or FAIL if not supported | |
1114 | * @adapter: board private structure to initialize | |
1115 | * | |
1116 | * Attempt to configure the interrupts using the best available | |
1117 | * capabilities of the hardware and the kernel. | |
1118 | **/ | |
1119 | static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter) | |
1120 | { | |
1121 | int vector, v_budget; | |
1122 | int pairs = 0; | |
1123 | int err = 0; | |
1124 | ||
1125 | if (!adapter->vsi_res) { | |
1126 | err = -EIO; | |
1127 | goto out; | |
1128 | } | |
1129 | pairs = adapter->vsi_res->num_queue_pairs; | |
1130 | ||
1131 | /* It's easy to be greedy for MSI-X vectors, but it really | |
1132 | * doesn't do us much good if we have a lot more vectors | |
1133 | * than CPU's. So let's be conservative and only ask for | |
1134 | * (roughly) twice the number of vectors as there are CPU's. | |
1135 | */ | |
30a500e2 MW |
1136 | v_budget = min_t(int, pairs, (int)(num_online_cpus() * 2)) + NONQ_VECS; |
1137 | v_budget = min_t(int, v_budget, (int)adapter->vf_res->max_vectors); | |
5eae00c5 GR |
1138 | |
1139 | /* A failure in MSI-X entry allocation isn't fatal, but it does | |
1140 | * mean we disable MSI-X capabilities of the adapter. | |
1141 | */ | |
1142 | adapter->msix_entries = kcalloc(v_budget, | |
1143 | sizeof(struct msix_entry), GFP_KERNEL); | |
1144 | if (!adapter->msix_entries) { | |
1145 | err = -ENOMEM; | |
1146 | goto out; | |
1147 | } | |
1148 | ||
1149 | for (vector = 0; vector < v_budget; vector++) | |
1150 | adapter->msix_entries[vector].entry = vector; | |
1151 | ||
1152 | i40evf_acquire_msix_vectors(adapter, v_budget); | |
1153 | ||
1154 | out: | |
1155 | adapter->netdev->real_num_tx_queues = pairs; | |
1156 | return err; | |
1157 | } | |
1158 | ||
1159 | /** | |
1160 | * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors | |
1161 | * @adapter: board private structure to initialize | |
1162 | * | |
1163 | * We allocate one q_vector per queue interrupt. If allocation fails we | |
1164 | * return -ENOMEM. | |
1165 | **/ | |
1166 | static int i40evf_alloc_q_vectors(struct i40evf_adapter *adapter) | |
1167 | { | |
1168 | int q_idx, num_q_vectors; | |
1169 | struct i40e_q_vector *q_vector; | |
1170 | ||
1171 | num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
1172 | ||
1173 | for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { | |
1174 | q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL); | |
1175 | if (!q_vector) | |
1176 | goto err_out; | |
1177 | q_vector->adapter = adapter; | |
1178 | q_vector->vsi = &adapter->vsi; | |
1179 | q_vector->v_idx = q_idx; | |
1180 | netif_napi_add(adapter->netdev, &q_vector->napi, | |
1181 | i40evf_napi_poll, 64); | |
1182 | adapter->q_vector[q_idx] = q_vector; | |
1183 | } | |
1184 | ||
1185 | return 0; | |
1186 | ||
1187 | err_out: | |
1188 | while (q_idx) { | |
1189 | q_idx--; | |
1190 | q_vector = adapter->q_vector[q_idx]; | |
1191 | netif_napi_del(&q_vector->napi); | |
1192 | kfree(q_vector); | |
1193 | adapter->q_vector[q_idx] = NULL; | |
1194 | } | |
1195 | return -ENOMEM; | |
1196 | } | |
1197 | ||
1198 | /** | |
1199 | * i40evf_free_q_vectors - Free memory allocated for interrupt vectors | |
1200 | * @adapter: board private structure to initialize | |
1201 | * | |
1202 | * This function frees the memory allocated to the q_vectors. In addition if | |
1203 | * NAPI is enabled it will delete any references to the NAPI struct prior | |
1204 | * to freeing the q_vector. | |
1205 | **/ | |
1206 | static void i40evf_free_q_vectors(struct i40evf_adapter *adapter) | |
1207 | { | |
1208 | int q_idx, num_q_vectors; | |
1209 | int napi_vectors; | |
1210 | ||
1211 | num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
1212 | napi_vectors = adapter->vsi_res->num_queue_pairs; | |
1213 | ||
1214 | for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { | |
1215 | struct i40e_q_vector *q_vector = adapter->q_vector[q_idx]; | |
1216 | ||
1217 | adapter->q_vector[q_idx] = NULL; | |
1218 | if (q_idx < napi_vectors) | |
1219 | netif_napi_del(&q_vector->napi); | |
1220 | kfree(q_vector); | |
1221 | } | |
1222 | } | |
1223 | ||
1224 | /** | |
1225 | * i40evf_reset_interrupt_capability - Reset MSIX setup | |
1226 | * @adapter: board private structure | |
1227 | * | |
1228 | **/ | |
1229 | void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter) | |
1230 | { | |
1231 | pci_disable_msix(adapter->pdev); | |
1232 | kfree(adapter->msix_entries); | |
1233 | adapter->msix_entries = NULL; | |
5eae00c5 GR |
1234 | } |
1235 | ||
1236 | /** | |
1237 | * i40evf_init_interrupt_scheme - Determine if MSIX is supported and init | |
1238 | * @adapter: board private structure to initialize | |
1239 | * | |
1240 | **/ | |
1241 | int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter) | |
1242 | { | |
1243 | int err; | |
1244 | ||
1245 | err = i40evf_set_interrupt_capability(adapter); | |
1246 | if (err) { | |
1247 | dev_err(&adapter->pdev->dev, | |
1248 | "Unable to setup interrupt capabilities\n"); | |
1249 | goto err_set_interrupt; | |
1250 | } | |
1251 | ||
1252 | err = i40evf_alloc_q_vectors(adapter); | |
1253 | if (err) { | |
1254 | dev_err(&adapter->pdev->dev, | |
1255 | "Unable to allocate memory for queue vectors\n"); | |
1256 | goto err_alloc_q_vectors; | |
1257 | } | |
1258 | ||
1259 | err = i40evf_alloc_queues(adapter); | |
1260 | if (err) { | |
1261 | dev_err(&adapter->pdev->dev, | |
1262 | "Unable to allocate memory for queues\n"); | |
1263 | goto err_alloc_queues; | |
1264 | } | |
1265 | ||
1266 | dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u", | |
1267 | (adapter->vsi_res->num_queue_pairs > 1) ? "Enabled" : | |
1268 | "Disabled", adapter->vsi_res->num_queue_pairs); | |
1269 | ||
1270 | return 0; | |
1271 | err_alloc_queues: | |
1272 | i40evf_free_q_vectors(adapter); | |
1273 | err_alloc_q_vectors: | |
1274 | i40evf_reset_interrupt_capability(adapter); | |
1275 | err_set_interrupt: | |
1276 | return err; | |
1277 | } | |
1278 | ||
1279 | /** | |
1280 | * i40evf_watchdog_timer - Periodic call-back timer | |
1281 | * @data: pointer to adapter disguised as unsigned long | |
1282 | **/ | |
1283 | static void i40evf_watchdog_timer(unsigned long data) | |
1284 | { | |
1285 | struct i40evf_adapter *adapter = (struct i40evf_adapter *)data; | |
1286 | schedule_work(&adapter->watchdog_task); | |
1287 | /* timer will be rescheduled in watchdog task */ | |
1288 | } | |
1289 | ||
1290 | /** | |
1291 | * i40evf_watchdog_task - Periodic call-back task | |
1292 | * @work: pointer to work_struct | |
1293 | **/ | |
1294 | static void i40evf_watchdog_task(struct work_struct *work) | |
1295 | { | |
1296 | struct i40evf_adapter *adapter = container_of(work, | |
1297 | struct i40evf_adapter, | |
1298 | watchdog_task); | |
1299 | struct i40e_hw *hw = &adapter->hw; | |
1300 | ||
ef8693eb MW |
1301 | if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section)) |
1302 | goto restart_watchdog; | |
1303 | ||
1304 | if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) { | |
ef8693eb MW |
1305 | if ((rd32(hw, I40E_VFGEN_RSTAT) & 0x3) == I40E_VFR_VFACTIVE) { |
1306 | /* A chance for redemption! */ | |
1307 | dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n"); | |
1308 | adapter->state = __I40EVF_STARTUP; | |
1309 | adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED; | |
1310 | schedule_delayed_work(&adapter->init_task, 10); | |
1311 | clear_bit(__I40EVF_IN_CRITICAL_TASK, | |
1312 | &adapter->crit_section); | |
1313 | /* Don't reschedule the watchdog, since we've restarted | |
1314 | * the init task. When init_task contacts the PF and | |
1315 | * gets everything set up again, it'll restart the | |
1316 | * watchdog for us. Down, boy. Sit. Stay. Woof. | |
1317 | */ | |
1318 | return; | |
1319 | } | |
1320 | adapter->aq_pending = 0; | |
1321 | adapter->aq_required = 0; | |
1322 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
5eae00c5 | 1323 | goto watchdog_done; |
ef8693eb | 1324 | } |
5eae00c5 | 1325 | |
ef8693eb MW |
1326 | if ((adapter->state < __I40EVF_DOWN) || |
1327 | (adapter->flags & I40EVF_FLAG_RESET_PENDING)) | |
5eae00c5 GR |
1328 | goto watchdog_done; |
1329 | ||
ef8693eb MW |
1330 | /* check for reset */ |
1331 | if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) && | |
5eae00c5 GR |
1332 | (rd32(hw, I40E_VFGEN_RSTAT) & 0x3) != I40E_VFR_VFACTIVE) { |
1333 | adapter->state = __I40EVF_RESETTING; | |
ef8693eb MW |
1334 | adapter->flags |= I40EVF_FLAG_RESET_PENDING; |
1335 | dev_err(&adapter->pdev->dev, "Hardware reset detected.\n"); | |
1336 | dev_info(&adapter->pdev->dev, "Scheduling reset task\n"); | |
5eae00c5 | 1337 | schedule_work(&adapter->reset_task); |
ef8693eb MW |
1338 | adapter->aq_pending = 0; |
1339 | adapter->aq_required = 0; | |
1340 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
5eae00c5 GR |
1341 | goto watchdog_done; |
1342 | } | |
1343 | ||
1344 | /* Process admin queue tasks. After init, everything gets done | |
1345 | * here so we don't race on the admin queue. | |
1346 | */ | |
1347 | if (adapter->aq_pending) | |
1348 | goto watchdog_done; | |
1349 | ||
1350 | if (adapter->aq_required & I40EVF_FLAG_AQ_MAP_VECTORS) { | |
1351 | i40evf_map_queues(adapter); | |
1352 | goto watchdog_done; | |
1353 | } | |
1354 | ||
1355 | if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_MAC_FILTER) { | |
1356 | i40evf_add_ether_addrs(adapter); | |
1357 | goto watchdog_done; | |
1358 | } | |
1359 | ||
1360 | if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_VLAN_FILTER) { | |
1361 | i40evf_add_vlans(adapter); | |
1362 | goto watchdog_done; | |
1363 | } | |
1364 | ||
1365 | if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_MAC_FILTER) { | |
1366 | i40evf_del_ether_addrs(adapter); | |
1367 | goto watchdog_done; | |
1368 | } | |
1369 | ||
1370 | if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_VLAN_FILTER) { | |
1371 | i40evf_del_vlans(adapter); | |
1372 | goto watchdog_done; | |
1373 | } | |
1374 | ||
1375 | if (adapter->aq_required & I40EVF_FLAG_AQ_DISABLE_QUEUES) { | |
1376 | i40evf_disable_queues(adapter); | |
1377 | goto watchdog_done; | |
1378 | } | |
1379 | ||
1380 | if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_QUEUES) { | |
1381 | i40evf_configure_queues(adapter); | |
1382 | goto watchdog_done; | |
1383 | } | |
1384 | ||
1385 | if (adapter->aq_required & I40EVF_FLAG_AQ_ENABLE_QUEUES) { | |
1386 | i40evf_enable_queues(adapter); | |
1387 | goto watchdog_done; | |
1388 | } | |
1389 | ||
1390 | if (adapter->state == __I40EVF_RUNNING) | |
1391 | i40evf_request_stats(adapter); | |
1392 | ||
1393 | i40evf_irq_enable(adapter, true); | |
1394 | i40evf_fire_sw_int(adapter, 0xFF); | |
ef8693eb | 1395 | |
5eae00c5 | 1396 | watchdog_done: |
ef8693eb MW |
1397 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
1398 | restart_watchdog: | |
5eae00c5 GR |
1399 | if (adapter->aq_required) |
1400 | mod_timer(&adapter->watchdog_timer, | |
1401 | jiffies + msecs_to_jiffies(20)); | |
1402 | else | |
1403 | mod_timer(&adapter->watchdog_timer, jiffies + (HZ * 2)); | |
5eae00c5 GR |
1404 | schedule_work(&adapter->adminq_task); |
1405 | } | |
1406 | ||
5b7af02c MW |
1407 | /** |
1408 | * i40evf_configure_rss - increment to next available tx queue | |
1409 | * @adapter: board private structure | |
1410 | * @j: queue counter | |
1411 | * | |
1412 | * Helper function for RSS programming to increment through available | |
1413 | * queus. Returns the next queue value. | |
1414 | **/ | |
96d47704 MW |
1415 | static int next_queue(struct i40evf_adapter *adapter, int j) |
1416 | { | |
1417 | j += 1; | |
1418 | ||
1419 | return j >= adapter->vsi_res->num_queue_pairs ? 0 : j; | |
1420 | } | |
1421 | ||
5eae00c5 GR |
1422 | /** |
1423 | * i40evf_configure_rss - Prepare for RSS if used | |
1424 | * @adapter: board private structure | |
1425 | **/ | |
1426 | static void i40evf_configure_rss(struct i40evf_adapter *adapter) | |
1427 | { | |
1428 | struct i40e_hw *hw = &adapter->hw; | |
1429 | u32 lut = 0; | |
1430 | int i, j; | |
1431 | u64 hena; | |
1432 | ||
1433 | /* Set of random keys generated using kernel random number generator */ | |
1434 | static const u32 seed[I40E_VFQF_HKEY_MAX_INDEX + 1] = { | |
1435 | 0x794221b4, 0xbca0c5ab, 0x6cd5ebd9, 0x1ada6127, | |
1436 | 0x983b3aa1, 0x1c4e71eb, 0x7f6328b2, 0xfcdc0da0, | |
1437 | 0xc135cafa, 0x7a6f7e2d, 0xe7102d28, 0x163cd12e, | |
1438 | 0x4954b126 }; | |
1439 | ||
1440 | /* Hash type is configured by the PF - we just supply the key */ | |
1441 | ||
1442 | /* Fill out hash function seed */ | |
1443 | for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++) | |
1444 | wr32(hw, I40E_VFQF_HKEY(i), seed[i]); | |
1445 | ||
1446 | /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */ | |
1447 | hena = I40E_DEFAULT_RSS_HENA; | |
1448 | wr32(hw, I40E_VFQF_HENA(0), (u32)hena); | |
1449 | wr32(hw, I40E_VFQF_HENA(1), (u32)(hena >> 32)); | |
1450 | ||
1451 | /* Populate the LUT with max no. of queues in round robin fashion */ | |
96d47704 MW |
1452 | j = adapter->vsi_res->num_queue_pairs; |
1453 | for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++) { | |
5b7af02c MW |
1454 | j = next_queue(adapter, j); |
1455 | lut = j; | |
1456 | j = next_queue(adapter, j); | |
1457 | lut |= j << 8; | |
1458 | j = next_queue(adapter, j); | |
1459 | lut |= j << 16; | |
1460 | j = next_queue(adapter, j); | |
1461 | lut |= j << 24; | |
96d47704 | 1462 | wr32(hw, I40E_VFQF_HLUT(i), lut); |
5eae00c5 GR |
1463 | } |
1464 | i40e_flush(hw); | |
1465 | } | |
1466 | ||
ef8693eb MW |
1467 | #define I40EVF_RESET_WAIT_MS 100 |
1468 | #define I40EVF_RESET_WAIT_COUNT 200 | |
5eae00c5 GR |
1469 | /** |
1470 | * i40evf_reset_task - Call-back task to handle hardware reset | |
1471 | * @work: pointer to work_struct | |
1472 | * | |
1473 | * During reset we need to shut down and reinitialize the admin queue | |
1474 | * before we can use it to communicate with the PF again. We also clear | |
1475 | * and reinit the rings because that context is lost as well. | |
1476 | **/ | |
1477 | static void i40evf_reset_task(struct work_struct *work) | |
1478 | { | |
ef8693eb MW |
1479 | struct i40evf_adapter *adapter = container_of(work, |
1480 | struct i40evf_adapter, | |
1481 | reset_task); | |
5eae00c5 GR |
1482 | struct i40e_hw *hw = &adapter->hw; |
1483 | int i = 0, err; | |
1484 | uint32_t rstat_val; | |
1485 | ||
1486 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
1487 | &adapter->crit_section)) | |
1488 | udelay(500); | |
3526d800 MW |
1489 | |
1490 | if (adapter->flags & I40EVF_FLAG_RESET_NEEDED) { | |
1491 | dev_info(&adapter->pdev->dev, "Requesting reset from PF\n"); | |
1492 | i40evf_request_reset(adapter); | |
1493 | } | |
1494 | ||
ef8693eb MW |
1495 | /* poll until we see the reset actually happen */ |
1496 | for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { | |
1497 | rstat_val = rd32(hw, I40E_VFGEN_RSTAT) & | |
1498 | I40E_VFGEN_RSTAT_VFR_STATE_MASK; | |
1499 | if (rstat_val != I40E_VFR_VFACTIVE) { | |
1500 | dev_info(&adapter->pdev->dev, "Reset now occurring\n"); | |
1501 | break; | |
1502 | } else { | |
1503 | msleep(I40EVF_RESET_WAIT_MS); | |
1504 | } | |
1505 | } | |
1506 | if (i == I40EVF_RESET_WAIT_COUNT) { | |
1507 | dev_err(&adapter->pdev->dev, "Reset was not detected\n"); | |
1508 | adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; | |
1509 | goto continue_reset; /* act like the reset happened */ | |
1510 | } | |
5eae00c5 | 1511 | |
ef8693eb MW |
1512 | /* wait until the reset is complete and the PF is responding to us */ |
1513 | for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { | |
5eae00c5 GR |
1514 | rstat_val = rd32(hw, I40E_VFGEN_RSTAT) & |
1515 | I40E_VFGEN_RSTAT_VFR_STATE_MASK; | |
ef8693eb MW |
1516 | if (rstat_val == I40E_VFR_VFACTIVE) { |
1517 | dev_info(&adapter->pdev->dev, "Reset is complete. Reinitializing.\n"); | |
5eae00c5 | 1518 | break; |
ef8693eb MW |
1519 | } else { |
1520 | msleep(I40EVF_RESET_WAIT_MS); | |
1521 | } | |
5eae00c5 | 1522 | } |
ef8693eb | 1523 | if (i == I40EVF_RESET_WAIT_COUNT) { |
5eae00c5 | 1524 | /* reset never finished */ |
ef8693eb MW |
1525 | dev_err(&adapter->pdev->dev, "Reset never finished (%x). PF driver is dead, and so am I.\n", |
1526 | rstat_val); | |
1527 | adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED; | |
1528 | ||
169f4076 MW |
1529 | if (netif_running(adapter->netdev)) { |
1530 | set_bit(__I40E_DOWN, &adapter->vsi.state); | |
1531 | i40evf_down(adapter); | |
1532 | i40evf_free_traffic_irqs(adapter); | |
1533 | i40evf_free_all_tx_resources(adapter); | |
1534 | i40evf_free_all_rx_resources(adapter); | |
1535 | } | |
ef8693eb MW |
1536 | i40evf_free_misc_irq(adapter); |
1537 | i40evf_reset_interrupt_capability(adapter); | |
1538 | i40evf_free_queues(adapter); | |
1539 | kfree(adapter->vf_res); | |
1540 | i40evf_shutdown_adminq(hw); | |
1541 | adapter->netdev->flags &= ~IFF_UP; | |
1542 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
1543 | return; /* Do not attempt to reinit. It's dead, Jim. */ | |
5eae00c5 | 1544 | } |
ef8693eb MW |
1545 | |
1546 | continue_reset: | |
1547 | adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; | |
1548 | ||
5eae00c5 GR |
1549 | i40evf_down(adapter); |
1550 | adapter->state = __I40EVF_RESETTING; | |
1551 | ||
1552 | /* kill and reinit the admin queue */ | |
1553 | if (i40evf_shutdown_adminq(hw)) | |
1554 | dev_warn(&adapter->pdev->dev, | |
1555 | "%s: Failed to destroy the Admin Queue resources\n", | |
1556 | __func__); | |
1557 | err = i40evf_init_adminq(hw); | |
1558 | if (err) | |
1559 | dev_info(&adapter->pdev->dev, "%s: init_adminq failed: %d\n", | |
1560 | __func__, err); | |
1561 | ||
1562 | adapter->aq_pending = 0; | |
1563 | adapter->aq_required = 0; | |
1564 | i40evf_map_queues(adapter); | |
1565 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
1566 | ||
1567 | mod_timer(&adapter->watchdog_timer, jiffies + 2); | |
1568 | ||
1569 | if (netif_running(adapter->netdev)) { | |
1570 | /* allocate transmit descriptors */ | |
1571 | err = i40evf_setup_all_tx_resources(adapter); | |
1572 | if (err) | |
1573 | goto reset_err; | |
1574 | ||
1575 | /* allocate receive descriptors */ | |
1576 | err = i40evf_setup_all_rx_resources(adapter); | |
1577 | if (err) | |
1578 | goto reset_err; | |
1579 | ||
1580 | i40evf_configure(adapter); | |
1581 | ||
1582 | err = i40evf_up_complete(adapter); | |
1583 | if (err) | |
1584 | goto reset_err; | |
1585 | ||
1586 | i40evf_irq_enable(adapter, true); | |
1587 | } | |
1588 | return; | |
1589 | reset_err: | |
1590 | dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit.\n"); | |
1591 | i40evf_close(adapter->netdev); | |
1592 | } | |
1593 | ||
1594 | /** | |
1595 | * i40evf_adminq_task - worker thread to clean the admin queue | |
1596 | * @work: pointer to work_struct containing our data | |
1597 | **/ | |
1598 | static void i40evf_adminq_task(struct work_struct *work) | |
1599 | { | |
1600 | struct i40evf_adapter *adapter = | |
1601 | container_of(work, struct i40evf_adapter, adminq_task); | |
1602 | struct i40e_hw *hw = &adapter->hw; | |
1603 | struct i40e_arq_event_info event; | |
1604 | struct i40e_virtchnl_msg *v_msg; | |
1605 | i40e_status ret; | |
1606 | u16 pending; | |
1607 | ||
ef8693eb MW |
1608 | if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) |
1609 | return; | |
1610 | ||
5eae00c5 GR |
1611 | event.msg_size = I40EVF_MAX_AQ_BUF_SIZE; |
1612 | event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL); | |
1613 | if (!event.msg_buf) { | |
1614 | dev_info(&adapter->pdev->dev, "%s: no memory for ARQ clean\n", | |
1615 | __func__); | |
1616 | return; | |
1617 | } | |
1618 | v_msg = (struct i40e_virtchnl_msg *)&event.desc; | |
1619 | do { | |
1620 | ret = i40evf_clean_arq_element(hw, &event, &pending); | |
1621 | if (ret) | |
1622 | break; /* No event to process or error cleaning ARQ */ | |
1623 | ||
1624 | i40evf_virtchnl_completion(adapter, v_msg->v_opcode, | |
1625 | v_msg->v_retval, event.msg_buf, | |
1626 | event.msg_size); | |
1627 | if (pending != 0) { | |
1628 | dev_info(&adapter->pdev->dev, | |
1629 | "%s: ARQ: Pending events %d\n", | |
1630 | __func__, pending); | |
1631 | memset(event.msg_buf, 0, I40EVF_MAX_AQ_BUF_SIZE); | |
1632 | } | |
1633 | } while (pending); | |
1634 | ||
1635 | /* re-enable Admin queue interrupt cause */ | |
1636 | i40evf_misc_irq_enable(adapter); | |
1637 | ||
1638 | kfree(event.msg_buf); | |
1639 | } | |
1640 | ||
1641 | /** | |
1642 | * i40evf_free_all_tx_resources - Free Tx Resources for All Queues | |
1643 | * @adapter: board private structure | |
1644 | * | |
1645 | * Free all transmit software resources | |
1646 | **/ | |
1647 | static void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter) | |
1648 | { | |
1649 | int i; | |
1650 | ||
1651 | for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) | |
1652 | if (adapter->tx_rings[i]->desc) | |
1653 | i40evf_free_tx_resources(adapter->tx_rings[i]); | |
1654 | ||
1655 | } | |
1656 | ||
1657 | /** | |
1658 | * i40evf_setup_all_tx_resources - allocate all queues Tx resources | |
1659 | * @adapter: board private structure | |
1660 | * | |
1661 | * If this function returns with an error, then it's possible one or | |
1662 | * more of the rings is populated (while the rest are not). It is the | |
1663 | * callers duty to clean those orphaned rings. | |
1664 | * | |
1665 | * Return 0 on success, negative on failure | |
1666 | **/ | |
1667 | static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter) | |
1668 | { | |
1669 | int i, err = 0; | |
1670 | ||
1671 | for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) { | |
d732a184 | 1672 | adapter->tx_rings[i]->count = adapter->tx_desc_count; |
5eae00c5 GR |
1673 | err = i40evf_setup_tx_descriptors(adapter->tx_rings[i]); |
1674 | if (!err) | |
1675 | continue; | |
1676 | dev_err(&adapter->pdev->dev, | |
1677 | "%s: Allocation for Tx Queue %u failed\n", | |
1678 | __func__, i); | |
1679 | break; | |
1680 | } | |
1681 | ||
1682 | return err; | |
1683 | } | |
1684 | ||
1685 | /** | |
1686 | * i40evf_setup_all_rx_resources - allocate all queues Rx resources | |
1687 | * @adapter: board private structure | |
1688 | * | |
1689 | * If this function returns with an error, then it's possible one or | |
1690 | * more of the rings is populated (while the rest are not). It is the | |
1691 | * callers duty to clean those orphaned rings. | |
1692 | * | |
1693 | * Return 0 on success, negative on failure | |
1694 | **/ | |
1695 | static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter) | |
1696 | { | |
1697 | int i, err = 0; | |
1698 | ||
1699 | for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) { | |
d732a184 | 1700 | adapter->rx_rings[i]->count = adapter->rx_desc_count; |
5eae00c5 GR |
1701 | err = i40evf_setup_rx_descriptors(adapter->rx_rings[i]); |
1702 | if (!err) | |
1703 | continue; | |
1704 | dev_err(&adapter->pdev->dev, | |
1705 | "%s: Allocation for Rx Queue %u failed\n", | |
1706 | __func__, i); | |
1707 | break; | |
1708 | } | |
1709 | return err; | |
1710 | } | |
1711 | ||
1712 | /** | |
1713 | * i40evf_free_all_rx_resources - Free Rx Resources for All Queues | |
1714 | * @adapter: board private structure | |
1715 | * | |
1716 | * Free all receive software resources | |
1717 | **/ | |
1718 | static void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter) | |
1719 | { | |
1720 | int i; | |
1721 | ||
1722 | for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) | |
1723 | if (adapter->rx_rings[i]->desc) | |
1724 | i40evf_free_rx_resources(adapter->rx_rings[i]); | |
1725 | } | |
1726 | ||
1727 | /** | |
1728 | * i40evf_open - Called when a network interface is made active | |
1729 | * @netdev: network interface device structure | |
1730 | * | |
1731 | * Returns 0 on success, negative value on failure | |
1732 | * | |
1733 | * The open entry point is called when a network interface is made | |
1734 | * active by the system (IFF_UP). At this point all resources needed | |
1735 | * for transmit and receive operations are allocated, the interrupt | |
1736 | * handler is registered with the OS, the watchdog timer is started, | |
1737 | * and the stack is notified that the interface is ready. | |
1738 | **/ | |
1739 | static int i40evf_open(struct net_device *netdev) | |
1740 | { | |
1741 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
1742 | int err; | |
1743 | ||
ef8693eb MW |
1744 | if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) { |
1745 | dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n"); | |
1746 | return -EIO; | |
1747 | } | |
5eae00c5 GR |
1748 | if (adapter->state != __I40EVF_DOWN) |
1749 | return -EBUSY; | |
1750 | ||
1751 | /* allocate transmit descriptors */ | |
1752 | err = i40evf_setup_all_tx_resources(adapter); | |
1753 | if (err) | |
1754 | goto err_setup_tx; | |
1755 | ||
1756 | /* allocate receive descriptors */ | |
1757 | err = i40evf_setup_all_rx_resources(adapter); | |
1758 | if (err) | |
1759 | goto err_setup_rx; | |
1760 | ||
1761 | /* clear any pending interrupts, may auto mask */ | |
1762 | err = i40evf_request_traffic_irqs(adapter, netdev->name); | |
1763 | if (err) | |
1764 | goto err_req_irq; | |
1765 | ||
1766 | i40evf_configure(adapter); | |
1767 | ||
1768 | err = i40evf_up_complete(adapter); | |
1769 | if (err) | |
1770 | goto err_req_irq; | |
1771 | ||
1772 | i40evf_irq_enable(adapter, true); | |
1773 | ||
1774 | return 0; | |
1775 | ||
1776 | err_req_irq: | |
1777 | i40evf_down(adapter); | |
1778 | i40evf_free_traffic_irqs(adapter); | |
1779 | err_setup_rx: | |
1780 | i40evf_free_all_rx_resources(adapter); | |
1781 | err_setup_tx: | |
1782 | i40evf_free_all_tx_resources(adapter); | |
1783 | ||
1784 | return err; | |
1785 | } | |
1786 | ||
1787 | /** | |
1788 | * i40evf_close - Disables a network interface | |
1789 | * @netdev: network interface device structure | |
1790 | * | |
1791 | * Returns 0, this is not allowed to fail | |
1792 | * | |
1793 | * The close entry point is called when an interface is de-activated | |
1794 | * by the OS. The hardware is still under the drivers control, but | |
1795 | * needs to be disabled. All IRQs except vector 0 (reserved for admin queue) | |
1796 | * are freed, along with all transmit and receive resources. | |
1797 | **/ | |
1798 | static int i40evf_close(struct net_device *netdev) | |
1799 | { | |
1800 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
1801 | ||
ef8693eb MW |
1802 | if (adapter->state <= __I40EVF_DOWN) |
1803 | return 0; | |
1804 | ||
5eae00c5 GR |
1805 | /* signal that we are down to the interrupt handler */ |
1806 | adapter->state = __I40EVF_DOWN; | |
ef8693eb | 1807 | |
5eae00c5 GR |
1808 | set_bit(__I40E_DOWN, &adapter->vsi.state); |
1809 | ||
1810 | i40evf_down(adapter); | |
1811 | i40evf_free_traffic_irqs(adapter); | |
1812 | ||
1813 | i40evf_free_all_tx_resources(adapter); | |
1814 | i40evf_free_all_rx_resources(adapter); | |
1815 | ||
1816 | return 0; | |
1817 | } | |
1818 | ||
1819 | /** | |
1820 | * i40evf_get_stats - Get System Network Statistics | |
1821 | * @netdev: network interface device structure | |
1822 | * | |
1823 | * Returns the address of the device statistics structure. | |
1824 | * The statistics are actually updated from the timer callback. | |
1825 | **/ | |
1826 | static struct net_device_stats *i40evf_get_stats(struct net_device *netdev) | |
1827 | { | |
1828 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
1829 | ||
1830 | /* only return the current stats */ | |
1831 | return &adapter->net_stats; | |
1832 | } | |
1833 | ||
1834 | /** | |
1835 | * i40evf_reinit_locked - Software reinit | |
1836 | * @adapter: board private structure | |
1837 | * | |
1838 | * Reinititalizes the ring structures in response to a software configuration | |
1839 | * change. Roughly the same as close followed by open, but skips releasing | |
1840 | * and reallocating the interrupts. | |
1841 | **/ | |
1842 | void i40evf_reinit_locked(struct i40evf_adapter *adapter) | |
1843 | { | |
1844 | struct net_device *netdev = adapter->netdev; | |
1845 | int err; | |
1846 | ||
1847 | WARN_ON(in_interrupt()); | |
1848 | ||
5eae00c5 GR |
1849 | i40evf_down(adapter); |
1850 | ||
1851 | /* allocate transmit descriptors */ | |
1852 | err = i40evf_setup_all_tx_resources(adapter); | |
1853 | if (err) | |
1854 | goto err_reinit; | |
1855 | ||
1856 | /* allocate receive descriptors */ | |
1857 | err = i40evf_setup_all_rx_resources(adapter); | |
1858 | if (err) | |
1859 | goto err_reinit; | |
1860 | ||
1861 | i40evf_configure(adapter); | |
1862 | ||
1863 | err = i40evf_up_complete(adapter); | |
1864 | if (err) | |
1865 | goto err_reinit; | |
1866 | ||
1867 | i40evf_irq_enable(adapter, true); | |
1868 | return; | |
1869 | ||
1870 | err_reinit: | |
1871 | dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit.\n"); | |
1872 | i40evf_close(netdev); | |
1873 | } | |
1874 | ||
1875 | /** | |
1876 | * i40evf_change_mtu - Change the Maximum Transfer Unit | |
1877 | * @netdev: network interface device structure | |
1878 | * @new_mtu: new value for maximum frame size | |
1879 | * | |
1880 | * Returns 0 on success, negative on failure | |
1881 | **/ | |
1882 | static int i40evf_change_mtu(struct net_device *netdev, int new_mtu) | |
1883 | { | |
1884 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
1885 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
1886 | ||
1887 | if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER)) | |
1888 | return -EINVAL; | |
1889 | ||
1890 | /* must set new MTU before calling down or up */ | |
1891 | netdev->mtu = new_mtu; | |
1892 | i40evf_reinit_locked(adapter); | |
1893 | return 0; | |
1894 | } | |
1895 | ||
1896 | static const struct net_device_ops i40evf_netdev_ops = { | |
1897 | .ndo_open = i40evf_open, | |
1898 | .ndo_stop = i40evf_close, | |
1899 | .ndo_start_xmit = i40evf_xmit_frame, | |
1900 | .ndo_get_stats = i40evf_get_stats, | |
1901 | .ndo_set_rx_mode = i40evf_set_rx_mode, | |
1902 | .ndo_validate_addr = eth_validate_addr, | |
1903 | .ndo_set_mac_address = i40evf_set_mac, | |
1904 | .ndo_change_mtu = i40evf_change_mtu, | |
1905 | .ndo_tx_timeout = i40evf_tx_timeout, | |
1906 | .ndo_vlan_rx_add_vid = i40evf_vlan_rx_add_vid, | |
1907 | .ndo_vlan_rx_kill_vid = i40evf_vlan_rx_kill_vid, | |
1908 | }; | |
1909 | ||
1910 | /** | |
1911 | * i40evf_check_reset_complete - check that VF reset is complete | |
1912 | * @hw: pointer to hw struct | |
1913 | * | |
1914 | * Returns 0 if device is ready to use, or -EBUSY if it's in reset. | |
1915 | **/ | |
1916 | static int i40evf_check_reset_complete(struct i40e_hw *hw) | |
1917 | { | |
1918 | u32 rstat; | |
1919 | int i; | |
1920 | ||
1921 | for (i = 0; i < 100; i++) { | |
1922 | rstat = rd32(hw, I40E_VFGEN_RSTAT); | |
1923 | if (rstat == I40E_VFR_VFACTIVE) | |
1924 | return 0; | |
1925 | udelay(10); | |
1926 | } | |
1927 | return -EBUSY; | |
1928 | } | |
1929 | ||
1930 | /** | |
1931 | * i40evf_init_task - worker thread to perform delayed initialization | |
1932 | * @work: pointer to work_struct containing our data | |
1933 | * | |
1934 | * This task completes the work that was begun in probe. Due to the nature | |
1935 | * of VF-PF communications, we may need to wait tens of milliseconds to get | |
1936 | * reponses back from the PF. Rather than busy-wait in probe and bog down the | |
1937 | * whole system, we'll do it in a task so we can sleep. | |
1938 | * This task only runs during driver init. Once we've established | |
1939 | * communications with the PF driver and set up our netdev, the watchdog | |
1940 | * takes over. | |
1941 | **/ | |
1942 | static void i40evf_init_task(struct work_struct *work) | |
1943 | { | |
1944 | struct i40evf_adapter *adapter = container_of(work, | |
1945 | struct i40evf_adapter, | |
1946 | init_task.work); | |
1947 | struct net_device *netdev = adapter->netdev; | |
1948 | struct i40evf_mac_filter *f; | |
1949 | struct i40e_hw *hw = &adapter->hw; | |
1950 | struct pci_dev *pdev = adapter->pdev; | |
1951 | int i, err, bufsz; | |
1952 | ||
1953 | switch (adapter->state) { | |
1954 | case __I40EVF_STARTUP: | |
1955 | /* driver loaded, probe complete */ | |
ef8693eb MW |
1956 | adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED; |
1957 | adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; | |
5eae00c5 GR |
1958 | err = i40e_set_mac_type(hw); |
1959 | if (err) { | |
c2a137cb MW |
1960 | dev_err(&pdev->dev, "Failed to set MAC type (%d)\n", |
1961 | err); | |
5eae00c5 GR |
1962 | goto err; |
1963 | } | |
1964 | err = i40evf_check_reset_complete(hw); | |
1965 | if (err) { | |
c2a137cb MW |
1966 | dev_err(&pdev->dev, "Device is still in reset (%d)\n", |
1967 | err); | |
5eae00c5 GR |
1968 | goto err; |
1969 | } | |
1970 | hw->aq.num_arq_entries = I40EVF_AQ_LEN; | |
1971 | hw->aq.num_asq_entries = I40EVF_AQ_LEN; | |
1972 | hw->aq.arq_buf_size = I40EVF_MAX_AQ_BUF_SIZE; | |
1973 | hw->aq.asq_buf_size = I40EVF_MAX_AQ_BUF_SIZE; | |
1974 | ||
1975 | err = i40evf_init_adminq(hw); | |
1976 | if (err) { | |
c2a137cb MW |
1977 | dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n", |
1978 | err); | |
5eae00c5 GR |
1979 | goto err; |
1980 | } | |
1981 | err = i40evf_send_api_ver(adapter); | |
1982 | if (err) { | |
10bdd67b | 1983 | dev_err(&pdev->dev, "Unable to send to PF (%d)\n", err); |
5eae00c5 GR |
1984 | i40evf_shutdown_adminq(hw); |
1985 | goto err; | |
1986 | } | |
1987 | adapter->state = __I40EVF_INIT_VERSION_CHECK; | |
1988 | goto restart; | |
1989 | break; | |
1990 | case __I40EVF_INIT_VERSION_CHECK: | |
10bdd67b MW |
1991 | if (!i40evf_asq_done(hw)) { |
1992 | dev_err(&pdev->dev, "Admin queue command never completed.\n"); | |
5eae00c5 | 1993 | goto err; |
10bdd67b | 1994 | } |
5eae00c5 GR |
1995 | |
1996 | /* aq msg sent, awaiting reply */ | |
1997 | err = i40evf_verify_api_ver(adapter); | |
1998 | if (err) { | |
c2a137cb | 1999 | dev_err(&pdev->dev, "Unable to verify API version (%d)\n", |
5eae00c5 GR |
2000 | err); |
2001 | goto err; | |
2002 | } | |
2003 | err = i40evf_send_vf_config_msg(adapter); | |
2004 | if (err) { | |
c2a137cb | 2005 | dev_err(&pdev->dev, "Unable send config request (%d)\n", |
5eae00c5 GR |
2006 | err); |
2007 | goto err; | |
2008 | } | |
2009 | adapter->state = __I40EVF_INIT_GET_RESOURCES; | |
2010 | goto restart; | |
2011 | break; | |
2012 | case __I40EVF_INIT_GET_RESOURCES: | |
2013 | /* aq msg sent, awaiting reply */ | |
2014 | if (!adapter->vf_res) { | |
2015 | bufsz = sizeof(struct i40e_virtchnl_vf_resource) + | |
2016 | (I40E_MAX_VF_VSI * | |
2017 | sizeof(struct i40e_virtchnl_vsi_resource)); | |
2018 | adapter->vf_res = kzalloc(bufsz, GFP_KERNEL); | |
c2a137cb | 2019 | if (!adapter->vf_res) |
5eae00c5 | 2020 | goto err; |
5eae00c5 GR |
2021 | } |
2022 | err = i40evf_get_vf_config(adapter); | |
2023 | if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK) | |
2024 | goto restart; | |
2025 | if (err) { | |
c2a137cb MW |
2026 | dev_err(&pdev->dev, "Unable to get VF config (%d)\n", |
2027 | err); | |
5eae00c5 GR |
2028 | goto err_alloc; |
2029 | } | |
2030 | adapter->state = __I40EVF_INIT_SW; | |
2031 | break; | |
2032 | default: | |
2033 | goto err_alloc; | |
2034 | } | |
2035 | /* got VF config message back from PF, now we can parse it */ | |
2036 | for (i = 0; i < adapter->vf_res->num_vsis; i++) { | |
2037 | if (adapter->vf_res->vsi_res[i].vsi_type == I40E_VSI_SRIOV) | |
2038 | adapter->vsi_res = &adapter->vf_res->vsi_res[i]; | |
2039 | } | |
2040 | if (!adapter->vsi_res) { | |
c2a137cb | 2041 | dev_err(&pdev->dev, "No LAN VSI found\n"); |
5eae00c5 GR |
2042 | goto err_alloc; |
2043 | } | |
2044 | ||
2045 | adapter->flags |= I40EVF_FLAG_RX_CSUM_ENABLED; | |
2046 | ||
5eae00c5 GR |
2047 | netdev->netdev_ops = &i40evf_netdev_ops; |
2048 | i40evf_set_ethtool_ops(netdev); | |
2049 | netdev->watchdog_timeo = 5 * HZ; | |
dbbd8111 MW |
2050 | netdev->features |= NETIF_F_HIGHDMA | |
2051 | NETIF_F_SG | | |
5eae00c5 GR |
2052 | NETIF_F_IP_CSUM | |
2053 | NETIF_F_SCTP_CSUM | | |
2054 | NETIF_F_IPV6_CSUM | | |
2055 | NETIF_F_TSO | | |
2056 | NETIF_F_TSO6 | | |
3415e8ce | 2057 | NETIF_F_RXCSUM | |
5eae00c5 GR |
2058 | NETIF_F_GRO; |
2059 | ||
2060 | if (adapter->vf_res->vf_offload_flags | |
2061 | & I40E_VIRTCHNL_VF_OFFLOAD_VLAN) { | |
2062 | netdev->vlan_features = netdev->features; | |
2063 | netdev->features |= NETIF_F_HW_VLAN_CTAG_TX | | |
2064 | NETIF_F_HW_VLAN_CTAG_RX | | |
2065 | NETIF_F_HW_VLAN_CTAG_FILTER; | |
2066 | } | |
2067 | ||
3415e8ce GR |
2068 | /* copy netdev features into list of user selectable features */ |
2069 | netdev->hw_features |= netdev->features; | |
2070 | netdev->hw_features &= ~NETIF_F_RXCSUM; | |
2071 | ||
5eae00c5 | 2072 | if (!is_valid_ether_addr(adapter->hw.mac.addr)) { |
c2a137cb MW |
2073 | dev_info(&pdev->dev, "Invalid MAC address %pMAC, using random\n", |
2074 | adapter->hw.mac.addr); | |
5eae00c5 GR |
2075 | random_ether_addr(adapter->hw.mac.addr); |
2076 | } | |
2077 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
2078 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); | |
2079 | ||
2080 | INIT_LIST_HEAD(&adapter->mac_filter_list); | |
2081 | INIT_LIST_HEAD(&adapter->vlan_filter_list); | |
2082 | f = kzalloc(sizeof(*f), GFP_ATOMIC); | |
2083 | if (NULL == f) | |
2084 | goto err_sw_init; | |
2085 | ||
2086 | memcpy(f->macaddr, adapter->hw.mac.addr, ETH_ALEN); | |
2087 | f->add = true; | |
2088 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; | |
2089 | ||
2090 | list_add(&f->list, &adapter->mac_filter_list); | |
2091 | ||
2092 | init_timer(&adapter->watchdog_timer); | |
2093 | adapter->watchdog_timer.function = &i40evf_watchdog_timer; | |
2094 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
2095 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
2096 | ||
d732a184 MW |
2097 | adapter->tx_desc_count = I40EVF_DEFAULT_TXD; |
2098 | adapter->rx_desc_count = I40EVF_DEFAULT_RXD; | |
5eae00c5 GR |
2099 | err = i40evf_init_interrupt_scheme(adapter); |
2100 | if (err) | |
2101 | goto err_sw_init; | |
2102 | i40evf_map_rings_to_vectors(adapter); | |
2103 | i40evf_configure_rss(adapter); | |
2104 | err = i40evf_request_misc_irq(adapter); | |
2105 | if (err) | |
2106 | goto err_sw_init; | |
2107 | ||
2108 | netif_carrier_off(netdev); | |
2109 | ||
5eae00c5 GR |
2110 | adapter->vsi.id = adapter->vsi_res->vsi_id; |
2111 | adapter->vsi.seid = adapter->vsi_res->vsi_id; /* dummy */ | |
2112 | adapter->vsi.back = adapter; | |
2113 | adapter->vsi.base_vector = 1; | |
2114 | adapter->vsi.work_limit = I40E_DEFAULT_IRQ_WORK; | |
ca99eb99 MW |
2115 | adapter->vsi.rx_itr_setting = (I40E_ITR_DYNAMIC | |
2116 | ITR_REG_TO_USEC(I40E_ITR_RX_DEF)); | |
2117 | adapter->vsi.tx_itr_setting = (I40E_ITR_DYNAMIC | | |
2118 | ITR_REG_TO_USEC(I40E_ITR_TX_DEF)); | |
5eae00c5 GR |
2119 | adapter->vsi.netdev = adapter->netdev; |
2120 | ||
ef8693eb MW |
2121 | if (!adapter->netdev_registered) { |
2122 | err = register_netdev(netdev); | |
2123 | if (err) | |
2124 | goto err_register; | |
2125 | } | |
5eae00c5 GR |
2126 | |
2127 | adapter->netdev_registered = true; | |
2128 | ||
2129 | netif_tx_stop_all_queues(netdev); | |
2130 | ||
2131 | dev_info(&pdev->dev, "MAC address: %pMAC\n", adapter->hw.mac.addr); | |
2132 | if (netdev->features & NETIF_F_GRO) | |
2133 | dev_info(&pdev->dev, "GRO is enabled\n"); | |
2134 | ||
2135 | dev_info(&pdev->dev, "%s\n", i40evf_driver_string); | |
2136 | adapter->state = __I40EVF_DOWN; | |
2137 | set_bit(__I40E_DOWN, &adapter->vsi.state); | |
2138 | i40evf_misc_irq_enable(adapter); | |
2139 | return; | |
2140 | restart: | |
2141 | schedule_delayed_work(&adapter->init_task, | |
2142 | msecs_to_jiffies(50)); | |
2143 | return; | |
2144 | ||
2145 | err_register: | |
2146 | i40evf_free_misc_irq(adapter); | |
2147 | err_sw_init: | |
2148 | i40evf_reset_interrupt_capability(adapter); | |
5eae00c5 GR |
2149 | err_alloc: |
2150 | kfree(adapter->vf_res); | |
2151 | adapter->vf_res = NULL; | |
2152 | err: | |
2153 | /* Things went into the weeds, so try again later */ | |
2154 | if (++adapter->aq_wait_count > I40EVF_AQ_MAX_ERR) { | |
2155 | dev_err(&pdev->dev, "Failed to communicate with PF; giving up.\n"); | |
ef8693eb | 2156 | adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED; |
5eae00c5 GR |
2157 | return; /* do not reschedule */ |
2158 | } | |
2159 | schedule_delayed_work(&adapter->init_task, HZ * 3); | |
5eae00c5 GR |
2160 | } |
2161 | ||
2162 | /** | |
2163 | * i40evf_shutdown - Shutdown the device in preparation for a reboot | |
2164 | * @pdev: pci device structure | |
2165 | **/ | |
2166 | static void i40evf_shutdown(struct pci_dev *pdev) | |
2167 | { | |
2168 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2169 | ||
2170 | netif_device_detach(netdev); | |
2171 | ||
2172 | if (netif_running(netdev)) | |
2173 | i40evf_close(netdev); | |
2174 | ||
2175 | #ifdef CONFIG_PM | |
2176 | pci_save_state(pdev); | |
2177 | ||
2178 | #endif | |
2179 | pci_disable_device(pdev); | |
2180 | } | |
2181 | ||
2182 | /** | |
2183 | * i40evf_probe - Device Initialization Routine | |
2184 | * @pdev: PCI device information struct | |
2185 | * @ent: entry in i40evf_pci_tbl | |
2186 | * | |
2187 | * Returns 0 on success, negative on failure | |
2188 | * | |
2189 | * i40evf_probe initializes an adapter identified by a pci_dev structure. | |
2190 | * The OS initialization, configuring of the adapter private structure, | |
2191 | * and a hardware reset occur. | |
2192 | **/ | |
2193 | static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
2194 | { | |
2195 | struct net_device *netdev; | |
2196 | struct i40evf_adapter *adapter = NULL; | |
2197 | struct i40e_hw *hw = NULL; | |
dbbd8111 | 2198 | int err; |
5eae00c5 GR |
2199 | |
2200 | err = pci_enable_device(pdev); | |
2201 | if (err) | |
2202 | return err; | |
2203 | ||
6494294f | 2204 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
6494294f | 2205 | if (err) { |
e3e3bfdd JS |
2206 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
2207 | if (err) { | |
2208 | dev_err(&pdev->dev, | |
2209 | "DMA configuration failed: 0x%x\n", err); | |
2210 | goto err_dma; | |
2211 | } | |
5eae00c5 GR |
2212 | } |
2213 | ||
2214 | err = pci_request_regions(pdev, i40evf_driver_name); | |
2215 | if (err) { | |
2216 | dev_err(&pdev->dev, | |
2217 | "pci_request_regions failed 0x%x\n", err); | |
2218 | goto err_pci_reg; | |
2219 | } | |
2220 | ||
2221 | pci_enable_pcie_error_reporting(pdev); | |
2222 | ||
2223 | pci_set_master(pdev); | |
2224 | ||
2225 | netdev = alloc_etherdev_mq(sizeof(struct i40evf_adapter), | |
2226 | MAX_TX_QUEUES); | |
2227 | if (!netdev) { | |
2228 | err = -ENOMEM; | |
2229 | goto err_alloc_etherdev; | |
2230 | } | |
2231 | ||
2232 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2233 | ||
2234 | pci_set_drvdata(pdev, netdev); | |
2235 | adapter = netdev_priv(netdev); | |
5eae00c5 GR |
2236 | |
2237 | adapter->netdev = netdev; | |
2238 | adapter->pdev = pdev; | |
2239 | ||
2240 | hw = &adapter->hw; | |
2241 | hw->back = adapter; | |
2242 | ||
2243 | adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; | |
2244 | adapter->state = __I40EVF_STARTUP; | |
2245 | ||
2246 | /* Call save state here because it relies on the adapter struct. */ | |
2247 | pci_save_state(pdev); | |
2248 | ||
2249 | hw->hw_addr = ioremap(pci_resource_start(pdev, 0), | |
2250 | pci_resource_len(pdev, 0)); | |
2251 | if (!hw->hw_addr) { | |
2252 | err = -EIO; | |
2253 | goto err_ioremap; | |
2254 | } | |
2255 | hw->vendor_id = pdev->vendor; | |
2256 | hw->device_id = pdev->device; | |
2257 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
2258 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2259 | hw->subsystem_device_id = pdev->subsystem_device; | |
2260 | hw->bus.device = PCI_SLOT(pdev->devfn); | |
2261 | hw->bus.func = PCI_FUNC(pdev->devfn); | |
2262 | ||
2263 | INIT_WORK(&adapter->reset_task, i40evf_reset_task); | |
2264 | INIT_WORK(&adapter->adminq_task, i40evf_adminq_task); | |
2265 | INIT_WORK(&adapter->watchdog_task, i40evf_watchdog_task); | |
2266 | INIT_DELAYED_WORK(&adapter->init_task, i40evf_init_task); | |
2267 | schedule_delayed_work(&adapter->init_task, 10); | |
2268 | ||
2269 | return 0; | |
2270 | ||
2271 | err_ioremap: | |
2272 | free_netdev(netdev); | |
2273 | err_alloc_etherdev: | |
2274 | pci_release_regions(pdev); | |
2275 | err_pci_reg: | |
2276 | err_dma: | |
2277 | pci_disable_device(pdev); | |
2278 | return err; | |
2279 | } | |
2280 | ||
2281 | #ifdef CONFIG_PM | |
2282 | /** | |
2283 | * i40evf_suspend - Power management suspend routine | |
2284 | * @pdev: PCI device information struct | |
2285 | * @state: unused | |
2286 | * | |
2287 | * Called when the system (VM) is entering sleep/suspend. | |
2288 | **/ | |
2289 | static int i40evf_suspend(struct pci_dev *pdev, pm_message_t state) | |
2290 | { | |
2291 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2292 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2293 | int retval = 0; | |
2294 | ||
2295 | netif_device_detach(netdev); | |
2296 | ||
2297 | if (netif_running(netdev)) { | |
2298 | rtnl_lock(); | |
2299 | i40evf_down(adapter); | |
2300 | rtnl_unlock(); | |
2301 | } | |
2302 | i40evf_free_misc_irq(adapter); | |
2303 | i40evf_reset_interrupt_capability(adapter); | |
2304 | ||
2305 | retval = pci_save_state(pdev); | |
2306 | if (retval) | |
2307 | return retval; | |
2308 | ||
2309 | pci_disable_device(pdev); | |
2310 | ||
2311 | return 0; | |
2312 | } | |
2313 | ||
2314 | /** | |
2315 | * i40evf_resume - Power managment resume routine | |
2316 | * @pdev: PCI device information struct | |
2317 | * | |
2318 | * Called when the system (VM) is resumed from sleep/suspend. | |
2319 | **/ | |
2320 | static int i40evf_resume(struct pci_dev *pdev) | |
2321 | { | |
2322 | struct i40evf_adapter *adapter = pci_get_drvdata(pdev); | |
2323 | struct net_device *netdev = adapter->netdev; | |
2324 | u32 err; | |
2325 | ||
2326 | pci_set_power_state(pdev, PCI_D0); | |
2327 | pci_restore_state(pdev); | |
2328 | /* pci_restore_state clears dev->state_saved so call | |
2329 | * pci_save_state to restore it. | |
2330 | */ | |
2331 | pci_save_state(pdev); | |
2332 | ||
2333 | err = pci_enable_device_mem(pdev); | |
2334 | if (err) { | |
2335 | dev_err(&pdev->dev, "Cannot enable PCI device from suspend.\n"); | |
2336 | return err; | |
2337 | } | |
2338 | pci_set_master(pdev); | |
2339 | ||
2340 | rtnl_lock(); | |
2341 | err = i40evf_set_interrupt_capability(adapter); | |
2342 | if (err) { | |
2343 | dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n"); | |
2344 | return err; | |
2345 | } | |
2346 | err = i40evf_request_misc_irq(adapter); | |
2347 | rtnl_unlock(); | |
2348 | if (err) { | |
2349 | dev_err(&pdev->dev, "Cannot get interrupt vector.\n"); | |
2350 | return err; | |
2351 | } | |
2352 | ||
2353 | schedule_work(&adapter->reset_task); | |
2354 | ||
2355 | netif_device_attach(netdev); | |
2356 | ||
2357 | return err; | |
2358 | } | |
2359 | ||
2360 | #endif /* CONFIG_PM */ | |
2361 | /** | |
2362 | * i40evf_remove - Device Removal Routine | |
2363 | * @pdev: PCI device information struct | |
2364 | * | |
2365 | * i40evf_remove is called by the PCI subsystem to alert the driver | |
2366 | * that it should release a PCI device. The could be caused by a | |
2367 | * Hot-Plug event, or because the driver is going to be removed from | |
2368 | * memory. | |
2369 | **/ | |
2370 | static void i40evf_remove(struct pci_dev *pdev) | |
2371 | { | |
2372 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2373 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2374 | struct i40e_hw *hw = &adapter->hw; | |
2375 | ||
2376 | cancel_delayed_work_sync(&adapter->init_task); | |
ef8693eb | 2377 | cancel_work_sync(&adapter->reset_task); |
5eae00c5 GR |
2378 | |
2379 | if (adapter->netdev_registered) { | |
2380 | unregister_netdev(netdev); | |
2381 | adapter->netdev_registered = false; | |
2382 | } | |
2383 | adapter->state = __I40EVF_REMOVE; | |
2384 | ||
dbb01c8a | 2385 | if (adapter->msix_entries) { |
5eae00c5 | 2386 | i40evf_misc_irq_disable(adapter); |
5eae00c5 | 2387 | i40evf_free_misc_irq(adapter); |
5eae00c5 GR |
2388 | i40evf_reset_interrupt_capability(adapter); |
2389 | } | |
2390 | ||
dbb01c8a MW |
2391 | del_timer_sync(&adapter->watchdog_timer); |
2392 | flush_scheduled_work(); | |
2393 | ||
5eae00c5 GR |
2394 | if (hw->aq.asq.count) |
2395 | i40evf_shutdown_adminq(hw); | |
2396 | ||
2397 | iounmap(hw->hw_addr); | |
2398 | pci_release_regions(pdev); | |
2399 | ||
2400 | i40evf_free_queues(adapter); | |
2401 | kfree(adapter->vf_res); | |
2402 | ||
2403 | free_netdev(netdev); | |
2404 | ||
2405 | pci_disable_pcie_error_reporting(pdev); | |
2406 | ||
2407 | pci_disable_device(pdev); | |
2408 | } | |
2409 | ||
2410 | static struct pci_driver i40evf_driver = { | |
2411 | .name = i40evf_driver_name, | |
2412 | .id_table = i40evf_pci_tbl, | |
2413 | .probe = i40evf_probe, | |
2414 | .remove = i40evf_remove, | |
2415 | #ifdef CONFIG_PM | |
2416 | .suspend = i40evf_suspend, | |
2417 | .resume = i40evf_resume, | |
2418 | #endif | |
2419 | .shutdown = i40evf_shutdown, | |
2420 | }; | |
2421 | ||
2422 | /** | |
2423 | * i40e_init_module - Driver Registration Routine | |
2424 | * | |
2425 | * i40e_init_module is the first routine called when the driver is | |
2426 | * loaded. All it does is register with the PCI subsystem. | |
2427 | **/ | |
2428 | static int __init i40evf_init_module(void) | |
2429 | { | |
2430 | int ret; | |
2431 | pr_info("i40evf: %s - version %s\n", i40evf_driver_string, | |
2432 | i40evf_driver_version); | |
2433 | ||
2434 | pr_info("%s\n", i40evf_copyright); | |
2435 | ||
2436 | ret = pci_register_driver(&i40evf_driver); | |
2437 | return ret; | |
2438 | } | |
2439 | ||
2440 | module_init(i40evf_init_module); | |
2441 | ||
2442 | /** | |
2443 | * i40e_exit_module - Driver Exit Cleanup Routine | |
2444 | * | |
2445 | * i40e_exit_module is called just before the driver is removed | |
2446 | * from memory. | |
2447 | **/ | |
2448 | static void __exit i40evf_exit_module(void) | |
2449 | { | |
2450 | pci_unregister_driver(&i40evf_driver); | |
2451 | } | |
2452 | ||
2453 | module_exit(i40evf_exit_module); | |
2454 | ||
2455 | /* i40evf_main.c */ |