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5eae00c5 GR |
1 | /******************************************************************************* |
2 | * | |
3 | * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver | |
eaab59e9 | 4 | * Copyright(c) 2013 - 2016 Intel Corporation. |
5eae00c5 GR |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms and conditions of the GNU General Public License, | |
8 | * version 2, as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope it will be useful, but WITHOUT | |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | * more details. | |
14 | * | |
b831607d JB |
15 | * You should have received a copy of the GNU General Public License along |
16 | * with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 | * | |
5eae00c5 GR |
18 | * The full GNU General Public License is included in this distribution in |
19 | * the file called "COPYING". | |
20 | * | |
21 | * Contact Information: | |
22 | * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
23 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
24 | * | |
25 | ******************************************************************************/ | |
26 | ||
27 | #include "i40evf.h" | |
28 | #include "i40e_prototype.h" | |
29 | static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter); | |
30 | static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter); | |
31 | static int i40evf_close(struct net_device *netdev); | |
32 | ||
33 | char i40evf_driver_name[] = "i40evf"; | |
34 | static const char i40evf_driver_string[] = | |
eaab59e9 | 35 | "Intel(R) 40-10 Gigabit Virtual Function Network Driver"; |
5eae00c5 | 36 | |
69ebe955 MW |
37 | #define DRV_KERN "-k" |
38 | ||
39 | #define DRV_VERSION_MAJOR 1 | |
50f26a50 | 40 | #define DRV_VERSION_MINOR 5 |
5a6fc256 | 41 | #define DRV_VERSION_BUILD 10 |
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 |
46 | const char i40evf_driver_version[] = DRV_VERSION; |
47 | static 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 | 58 | static 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 | ||
65 | MODULE_DEVICE_TABLE(pci, i40evf_pci_tbl); | |
66 | ||
67 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
68 | MODULE_DESCRIPTION("Intel(R) XL710 X710 Virtual Function Network Driver"); | |
69 | MODULE_LICENSE("GPL"); | |
70 | MODULE_VERSION(DRV_VERSION); | |
71 | ||
2803b16c JB |
72 | static 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 | **/ | |
81 | i40e_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 | **/ | |
104 | i40e_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 | **/ | |
121 | i40e_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 | **/ | |
141 | i40e_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 | **/ | |
159 | void i40evf_debug_d(void *hw, u32 mask, char *fmt_str, ...) | |
160 | { | |
161 | char buf[512]; | |
162 | va_list argptr; | |
163 | ||
164 | if (!(mask & ((struct i40e_hw *)hw)->debug_mask)) | |
165 | return; | |
166 | ||
167 | va_start(argptr, fmt_str); | |
168 | vsnprintf(buf, sizeof(buf), fmt_str, argptr); | |
169 | va_end(argptr); | |
170 | ||
171 | /* the debug string is already formatted with a newline */ | |
172 | pr_info("%s", buf); | |
173 | } | |
174 | ||
00e5ec4b MW |
175 | /** |
176 | * i40evf_schedule_reset - Set the flags and schedule a reset event | |
177 | * @adapter: board private structure | |
178 | **/ | |
179 | void i40evf_schedule_reset(struct i40evf_adapter *adapter) | |
180 | { | |
181 | if (!(adapter->flags & | |
182 | (I40EVF_FLAG_RESET_PENDING | I40EVF_FLAG_RESET_NEEDED))) { | |
183 | adapter->flags |= I40EVF_FLAG_RESET_NEEDED; | |
184 | schedule_work(&adapter->reset_task); | |
185 | } | |
186 | } | |
187 | ||
5eae00c5 GR |
188 | /** |
189 | * i40evf_tx_timeout - Respond to a Tx Hang | |
190 | * @netdev: network interface device structure | |
191 | **/ | |
192 | static void i40evf_tx_timeout(struct net_device *netdev) | |
193 | { | |
194 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
195 | ||
196 | adapter->tx_timeout_count++; | |
00e5ec4b | 197 | i40evf_schedule_reset(adapter); |
5eae00c5 GR |
198 | } |
199 | ||
200 | /** | |
201 | * i40evf_misc_irq_disable - Mask off interrupt generation on the NIC | |
202 | * @adapter: board private structure | |
203 | **/ | |
204 | static void i40evf_misc_irq_disable(struct i40evf_adapter *adapter) | |
205 | { | |
206 | struct i40e_hw *hw = &adapter->hw; | |
75a64435 | 207 | |
5eae00c5 GR |
208 | wr32(hw, I40E_VFINT_DYN_CTL01, 0); |
209 | ||
210 | /* read flush */ | |
211 | rd32(hw, I40E_VFGEN_RSTAT); | |
212 | ||
213 | synchronize_irq(adapter->msix_entries[0].vector); | |
214 | } | |
215 | ||
216 | /** | |
217 | * i40evf_misc_irq_enable - Enable default interrupt generation settings | |
218 | * @adapter: board private structure | |
219 | **/ | |
220 | static void i40evf_misc_irq_enable(struct i40evf_adapter *adapter) | |
221 | { | |
222 | struct i40e_hw *hw = &adapter->hw; | |
75a64435 | 223 | |
5eae00c5 GR |
224 | wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK | |
225 | I40E_VFINT_DYN_CTL01_ITR_INDX_MASK); | |
b1f3366b | 226 | wr32(hw, I40E_VFINT_ICR0_ENA1, I40E_VFINT_ICR0_ENA1_ADMINQ_MASK); |
5eae00c5 GR |
227 | |
228 | /* read flush */ | |
229 | rd32(hw, I40E_VFGEN_RSTAT); | |
230 | } | |
231 | ||
232 | /** | |
233 | * i40evf_irq_disable - Mask off interrupt generation on the NIC | |
234 | * @adapter: board private structure | |
235 | **/ | |
236 | static void i40evf_irq_disable(struct i40evf_adapter *adapter) | |
237 | { | |
238 | int i; | |
239 | struct i40e_hw *hw = &adapter->hw; | |
240 | ||
dbb01c8a MW |
241 | if (!adapter->msix_entries) |
242 | return; | |
243 | ||
5eae00c5 GR |
244 | for (i = 1; i < adapter->num_msix_vectors; i++) { |
245 | wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), 0); | |
246 | synchronize_irq(adapter->msix_entries[i].vector); | |
247 | } | |
248 | /* read flush */ | |
249 | rd32(hw, I40E_VFGEN_RSTAT); | |
5eae00c5 GR |
250 | } |
251 | ||
252 | /** | |
253 | * i40evf_irq_enable_queues - Enable interrupt for specified queues | |
254 | * @adapter: board private structure | |
255 | * @mask: bitmap of queues to enable | |
256 | **/ | |
257 | void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask) | |
258 | { | |
259 | struct i40e_hw *hw = &adapter->hw; | |
260 | int i; | |
261 | ||
262 | for (i = 1; i < adapter->num_msix_vectors; i++) { | |
41a1d04b | 263 | if (mask & BIT(i - 1)) { |
5eae00c5 GR |
264 | wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), |
265 | I40E_VFINT_DYN_CTLN1_INTENA_MASK | | |
97bf75f1 | 266 | I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK | |
b1f3366b | 267 | I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK); |
5eae00c5 GR |
268 | } |
269 | } | |
270 | } | |
271 | ||
272 | /** | |
273 | * i40evf_fire_sw_int - Generate SW interrupt for specified vectors | |
274 | * @adapter: board private structure | |
275 | * @mask: bitmap of vectors to trigger | |
276 | **/ | |
75a64435 | 277 | static void i40evf_fire_sw_int(struct i40evf_adapter *adapter, u32 mask) |
5eae00c5 GR |
278 | { |
279 | struct i40e_hw *hw = &adapter->hw; | |
280 | int i; | |
d82acb35 | 281 | u32 dyn_ctl; |
5eae00c5 | 282 | |
164ec1bf MW |
283 | if (mask & 1) { |
284 | dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTL01); | |
b1f3366b | 285 | dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK | |
97bf75f1 | 286 | I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK | |
b1f3366b | 287 | I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK; |
164ec1bf MW |
288 | wr32(hw, I40E_VFINT_DYN_CTL01, dyn_ctl); |
289 | } | |
5eae00c5 | 290 | for (i = 1; i < adapter->num_msix_vectors; i++) { |
41a1d04b | 291 | if (mask & BIT(i)) { |
5eae00c5 | 292 | dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTLN1(i - 1)); |
b1f3366b | 293 | dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK | |
97bf75f1 | 294 | I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK | |
b1f3366b | 295 | I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK; |
5eae00c5 GR |
296 | wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), dyn_ctl); |
297 | } | |
298 | } | |
299 | } | |
300 | ||
301 | /** | |
302 | * i40evf_irq_enable - Enable default interrupt generation settings | |
303 | * @adapter: board private structure | |
69c1d70a | 304 | * @flush: boolean value whether to run rd32() |
5eae00c5 GR |
305 | **/ |
306 | void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush) | |
307 | { | |
308 | struct i40e_hw *hw = &adapter->hw; | |
309 | ||
164ec1bf | 310 | i40evf_misc_irq_enable(adapter); |
5eae00c5 GR |
311 | i40evf_irq_enable_queues(adapter, ~0); |
312 | ||
313 | if (flush) | |
314 | rd32(hw, I40E_VFGEN_RSTAT); | |
315 | } | |
316 | ||
317 | /** | |
318 | * i40evf_msix_aq - Interrupt handler for vector 0 | |
319 | * @irq: interrupt number | |
320 | * @data: pointer to netdev | |
321 | **/ | |
322 | static irqreturn_t i40evf_msix_aq(int irq, void *data) | |
323 | { | |
324 | struct net_device *netdev = data; | |
325 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
326 | struct i40e_hw *hw = &adapter->hw; | |
327 | u32 val; | |
5eae00c5 | 328 | |
cfbe4dba JB |
329 | /* handle non-queue interrupts, these reads clear the registers */ |
330 | val = rd32(hw, I40E_VFINT_ICR01); | |
331 | val = rd32(hw, I40E_VFINT_ICR0_ENA1); | |
5eae00c5 | 332 | |
ed17f7e5 JS |
333 | val = rd32(hw, I40E_VFINT_DYN_CTL01) | |
334 | I40E_VFINT_DYN_CTL01_CLEARPBA_MASK; | |
5eae00c5 GR |
335 | wr32(hw, I40E_VFINT_DYN_CTL01, val); |
336 | ||
5eae00c5 GR |
337 | /* schedule work on the private workqueue */ |
338 | schedule_work(&adapter->adminq_task); | |
339 | ||
340 | return IRQ_HANDLED; | |
341 | } | |
342 | ||
343 | /** | |
344 | * i40evf_msix_clean_rings - MSIX mode Interrupt Handler | |
345 | * @irq: interrupt number | |
346 | * @data: pointer to a q_vector | |
347 | **/ | |
348 | static irqreturn_t i40evf_msix_clean_rings(int irq, void *data) | |
349 | { | |
350 | struct i40e_q_vector *q_vector = data; | |
351 | ||
352 | if (!q_vector->tx.ring && !q_vector->rx.ring) | |
353 | return IRQ_HANDLED; | |
354 | ||
5d3465a1 | 355 | napi_schedule_irqoff(&q_vector->napi); |
5eae00c5 GR |
356 | |
357 | return IRQ_HANDLED; | |
358 | } | |
359 | ||
360 | /** | |
361 | * i40evf_map_vector_to_rxq - associate irqs with rx queues | |
362 | * @adapter: board private structure | |
363 | * @v_idx: interrupt number | |
364 | * @r_idx: queue number | |
365 | **/ | |
366 | static void | |
367 | i40evf_map_vector_to_rxq(struct i40evf_adapter *adapter, int v_idx, int r_idx) | |
368 | { | |
7d96ba1a | 369 | struct i40e_q_vector *q_vector = &adapter->q_vectors[v_idx]; |
0dd438d8 | 370 | struct i40e_ring *rx_ring = &adapter->rx_rings[r_idx]; |
5eae00c5 GR |
371 | |
372 | rx_ring->q_vector = q_vector; | |
373 | rx_ring->next = q_vector->rx.ring; | |
374 | rx_ring->vsi = &adapter->vsi; | |
375 | q_vector->rx.ring = rx_ring; | |
376 | q_vector->rx.count++; | |
377 | q_vector->rx.latency_range = I40E_LOW_LATENCY; | |
ee2319cf | 378 | q_vector->itr_countdown = ITR_COUNTDOWN_START; |
5eae00c5 GR |
379 | } |
380 | ||
381 | /** | |
382 | * i40evf_map_vector_to_txq - associate irqs with tx queues | |
383 | * @adapter: board private structure | |
384 | * @v_idx: interrupt number | |
385 | * @t_idx: queue number | |
386 | **/ | |
387 | static void | |
388 | i40evf_map_vector_to_txq(struct i40evf_adapter *adapter, int v_idx, int t_idx) | |
389 | { | |
7d96ba1a | 390 | struct i40e_q_vector *q_vector = &adapter->q_vectors[v_idx]; |
0dd438d8 | 391 | struct i40e_ring *tx_ring = &adapter->tx_rings[t_idx]; |
5eae00c5 GR |
392 | |
393 | tx_ring->q_vector = q_vector; | |
394 | tx_ring->next = q_vector->tx.ring; | |
395 | tx_ring->vsi = &adapter->vsi; | |
396 | q_vector->tx.ring = tx_ring; | |
397 | q_vector->tx.count++; | |
398 | q_vector->tx.latency_range = I40E_LOW_LATENCY; | |
ee2319cf | 399 | q_vector->itr_countdown = ITR_COUNTDOWN_START; |
5eae00c5 | 400 | q_vector->num_ringpairs++; |
41a1d04b | 401 | q_vector->ring_mask |= BIT(t_idx); |
5eae00c5 GR |
402 | } |
403 | ||
404 | /** | |
405 | * i40evf_map_rings_to_vectors - Maps descriptor rings to vectors | |
406 | * @adapter: board private structure to initialize | |
407 | * | |
408 | * This function maps descriptor rings to the queue-specific vectors | |
409 | * we were allotted through the MSI-X enabling code. Ideally, we'd have | |
410 | * one vector per ring/queue, but on a constrained vector budget, we | |
411 | * group the rings as "efficiently" as possible. You would add new | |
412 | * mapping configurations in here. | |
413 | **/ | |
414 | static int i40evf_map_rings_to_vectors(struct i40evf_adapter *adapter) | |
415 | { | |
416 | int q_vectors; | |
417 | int v_start = 0; | |
418 | int rxr_idx = 0, txr_idx = 0; | |
cc052927 MW |
419 | int rxr_remaining = adapter->num_active_queues; |
420 | int txr_remaining = adapter->num_active_queues; | |
5eae00c5 GR |
421 | int i, j; |
422 | int rqpv, tqpv; | |
423 | int err = 0; | |
424 | ||
425 | q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
426 | ||
427 | /* The ideal configuration... | |
428 | * We have enough vectors to map one per queue. | |
429 | */ | |
973371da | 430 | if (q_vectors >= (rxr_remaining * 2)) { |
5eae00c5 GR |
431 | for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++) |
432 | i40evf_map_vector_to_rxq(adapter, v_start, rxr_idx); | |
433 | ||
434 | for (; txr_idx < txr_remaining; v_start++, txr_idx++) | |
435 | i40evf_map_vector_to_txq(adapter, v_start, txr_idx); | |
436 | goto out; | |
437 | } | |
438 | ||
439 | /* If we don't have enough vectors for a 1-to-1 | |
440 | * mapping, we'll have to group them so there are | |
441 | * multiple queues per vector. | |
442 | * Re-adjusting *qpv takes care of the remainder. | |
443 | */ | |
444 | for (i = v_start; i < q_vectors; i++) { | |
445 | rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i); | |
446 | for (j = 0; j < rqpv; j++) { | |
447 | i40evf_map_vector_to_rxq(adapter, i, rxr_idx); | |
448 | rxr_idx++; | |
449 | rxr_remaining--; | |
450 | } | |
451 | } | |
452 | for (i = v_start; i < q_vectors; i++) { | |
453 | tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i); | |
454 | for (j = 0; j < tqpv; j++) { | |
455 | i40evf_map_vector_to_txq(adapter, i, txr_idx); | |
456 | txr_idx++; | |
457 | txr_remaining--; | |
458 | } | |
459 | } | |
460 | ||
461 | out: | |
462 | adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS; | |
463 | ||
464 | return err; | |
465 | } | |
466 | ||
7709b4c1 AD |
467 | #ifdef CONFIG_NET_POLL_CONTROLLER |
468 | /** | |
469 | * i40evf_netpoll - A Polling 'interrupt' handler | |
470 | * @netdev: network interface device structure | |
471 | * | |
472 | * This is used by netconsole to send skbs without having to re-enable | |
473 | * interrupts. It's not called while the normal interrupt routine is executing. | |
474 | **/ | |
475 | static void i40evf_netpoll(struct net_device *netdev) | |
476 | { | |
477 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
478 | int q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
479 | int i; | |
480 | ||
481 | /* if interface is down do nothing */ | |
482 | if (test_bit(__I40E_DOWN, &adapter->vsi.state)) | |
483 | return; | |
484 | ||
485 | for (i = 0; i < q_vectors; i++) | |
7d96ba1a | 486 | i40evf_msix_clean_rings(0, &adapter->q_vectors[i]); |
7709b4c1 AD |
487 | } |
488 | ||
489 | #endif | |
5eae00c5 GR |
490 | /** |
491 | * i40evf_request_traffic_irqs - Initialize MSI-X interrupts | |
492 | * @adapter: board private structure | |
493 | * | |
494 | * Allocates MSI-X vectors for tx and rx handling, and requests | |
495 | * interrupts from the kernel. | |
496 | **/ | |
497 | static int | |
498 | i40evf_request_traffic_irqs(struct i40evf_adapter *adapter, char *basename) | |
499 | { | |
500 | int vector, err, q_vectors; | |
501 | int rx_int_idx = 0, tx_int_idx = 0; | |
502 | ||
503 | i40evf_irq_disable(adapter); | |
504 | /* Decrement for Other and TCP Timer vectors */ | |
505 | q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
506 | ||
507 | for (vector = 0; vector < q_vectors; vector++) { | |
7d96ba1a | 508 | struct i40e_q_vector *q_vector = &adapter->q_vectors[vector]; |
5eae00c5 GR |
509 | |
510 | if (q_vector->tx.ring && q_vector->rx.ring) { | |
511 | snprintf(q_vector->name, sizeof(q_vector->name) - 1, | |
512 | "i40evf-%s-%s-%d", basename, | |
513 | "TxRx", rx_int_idx++); | |
514 | tx_int_idx++; | |
515 | } else if (q_vector->rx.ring) { | |
516 | snprintf(q_vector->name, sizeof(q_vector->name) - 1, | |
517 | "i40evf-%s-%s-%d", basename, | |
518 | "rx", rx_int_idx++); | |
519 | } else if (q_vector->tx.ring) { | |
520 | snprintf(q_vector->name, sizeof(q_vector->name) - 1, | |
521 | "i40evf-%s-%s-%d", basename, | |
522 | "tx", tx_int_idx++); | |
523 | } else { | |
524 | /* skip this unused q_vector */ | |
525 | continue; | |
526 | } | |
527 | err = request_irq( | |
528 | adapter->msix_entries[vector + NONQ_VECS].vector, | |
529 | i40evf_msix_clean_rings, | |
530 | 0, | |
531 | q_vector->name, | |
532 | q_vector); | |
533 | if (err) { | |
534 | dev_info(&adapter->pdev->dev, | |
fb43201f | 535 | "Request_irq failed, error: %d\n", err); |
5eae00c5 GR |
536 | goto free_queue_irqs; |
537 | } | |
538 | /* assign the mask for this irq */ | |
539 | irq_set_affinity_hint( | |
540 | adapter->msix_entries[vector + NONQ_VECS].vector, | |
541 | q_vector->affinity_mask); | |
542 | } | |
543 | ||
544 | return 0; | |
545 | ||
546 | free_queue_irqs: | |
547 | while (vector) { | |
548 | vector--; | |
549 | irq_set_affinity_hint( | |
550 | adapter->msix_entries[vector + NONQ_VECS].vector, | |
551 | NULL); | |
552 | free_irq(adapter->msix_entries[vector + NONQ_VECS].vector, | |
7d96ba1a | 553 | &adapter->q_vectors[vector]); |
5eae00c5 GR |
554 | } |
555 | return err; | |
556 | } | |
557 | ||
558 | /** | |
559 | * i40evf_request_misc_irq - Initialize MSI-X interrupts | |
560 | * @adapter: board private structure | |
561 | * | |
562 | * Allocates MSI-X vector 0 and requests interrupts from the kernel. This | |
563 | * vector is only for the admin queue, and stays active even when the netdev | |
564 | * is closed. | |
565 | **/ | |
566 | static int i40evf_request_misc_irq(struct i40evf_adapter *adapter) | |
567 | { | |
568 | struct net_device *netdev = adapter->netdev; | |
569 | int err; | |
570 | ||
b39c1e2c | 571 | snprintf(adapter->misc_vector_name, |
9a21a007 CW |
572 | sizeof(adapter->misc_vector_name) - 1, "i40evf-%s:mbx", |
573 | dev_name(&adapter->pdev->dev)); | |
5eae00c5 | 574 | err = request_irq(adapter->msix_entries[0].vector, |
e1dfee8e MW |
575 | &i40evf_msix_aq, 0, |
576 | adapter->misc_vector_name, netdev); | |
5eae00c5 GR |
577 | if (err) { |
578 | dev_err(&adapter->pdev->dev, | |
77fa28be CS |
579 | "request_irq for %s failed: %d\n", |
580 | adapter->misc_vector_name, err); | |
5eae00c5 GR |
581 | free_irq(adapter->msix_entries[0].vector, netdev); |
582 | } | |
583 | return err; | |
584 | } | |
585 | ||
586 | /** | |
587 | * i40evf_free_traffic_irqs - Free MSI-X interrupts | |
588 | * @adapter: board private structure | |
589 | * | |
590 | * Frees all MSI-X vectors other than 0. | |
591 | **/ | |
592 | static void i40evf_free_traffic_irqs(struct i40evf_adapter *adapter) | |
593 | { | |
594 | int i; | |
595 | int q_vectors; | |
75a64435 | 596 | |
5eae00c5 GR |
597 | q_vectors = adapter->num_msix_vectors - NONQ_VECS; |
598 | ||
599 | for (i = 0; i < q_vectors; i++) { | |
600 | irq_set_affinity_hint(adapter->msix_entries[i+1].vector, | |
601 | NULL); | |
602 | free_irq(adapter->msix_entries[i+1].vector, | |
7d96ba1a | 603 | &adapter->q_vectors[i]); |
5eae00c5 GR |
604 | } |
605 | } | |
606 | ||
607 | /** | |
608 | * i40evf_free_misc_irq - Free MSI-X miscellaneous vector | |
609 | * @adapter: board private structure | |
610 | * | |
611 | * Frees MSI-X vector 0. | |
612 | **/ | |
613 | static void i40evf_free_misc_irq(struct i40evf_adapter *adapter) | |
614 | { | |
615 | struct net_device *netdev = adapter->netdev; | |
616 | ||
617 | free_irq(adapter->msix_entries[0].vector, netdev); | |
618 | } | |
619 | ||
620 | /** | |
621 | * i40evf_configure_tx - Configure Transmit Unit after Reset | |
622 | * @adapter: board private structure | |
623 | * | |
624 | * Configure the Tx unit of the MAC after a reset. | |
625 | **/ | |
626 | static void i40evf_configure_tx(struct i40evf_adapter *adapter) | |
627 | { | |
628 | struct i40e_hw *hw = &adapter->hw; | |
629 | int i; | |
75a64435 | 630 | |
cc052927 | 631 | for (i = 0; i < adapter->num_active_queues; i++) |
0dd438d8 | 632 | adapter->tx_rings[i].tail = hw->hw_addr + I40E_QTX_TAIL1(i); |
5eae00c5 GR |
633 | } |
634 | ||
635 | /** | |
636 | * i40evf_configure_rx - Configure Receive Unit after Reset | |
637 | * @adapter: board private structure | |
638 | * | |
639 | * Configure the Rx unit of the MAC after a reset. | |
640 | **/ | |
641 | static void i40evf_configure_rx(struct i40evf_adapter *adapter) | |
642 | { | |
643 | struct i40e_hw *hw = &adapter->hw; | |
5eae00c5 | 644 | int i; |
5eae00c5 | 645 | |
cc052927 | 646 | for (i = 0; i < adapter->num_active_queues; i++) { |
0dd438d8 | 647 | adapter->rx_rings[i].tail = hw->hw_addr + I40E_QRX_TAIL1(i); |
19b85e67 | 648 | adapter->rx_rings[i].rx_buf_len = I40EVF_RXBUFFER_2048; |
5eae00c5 GR |
649 | } |
650 | } | |
651 | ||
652 | /** | |
653 | * i40evf_find_vlan - Search filter list for specific vlan filter | |
654 | * @adapter: board private structure | |
655 | * @vlan: vlan tag | |
656 | * | |
657 | * Returns ptr to the filter object or NULL | |
658 | **/ | |
659 | static struct | |
660 | i40evf_vlan_filter *i40evf_find_vlan(struct i40evf_adapter *adapter, u16 vlan) | |
661 | { | |
662 | struct i40evf_vlan_filter *f; | |
663 | ||
664 | list_for_each_entry(f, &adapter->vlan_filter_list, list) { | |
665 | if (vlan == f->vlan) | |
666 | return f; | |
667 | } | |
668 | return NULL; | |
669 | } | |
670 | ||
671 | /** | |
672 | * i40evf_add_vlan - Add a vlan filter to the list | |
673 | * @adapter: board private structure | |
674 | * @vlan: VLAN tag | |
675 | * | |
676 | * Returns ptr to the filter object or NULL when no memory available. | |
677 | **/ | |
678 | static struct | |
679 | i40evf_vlan_filter *i40evf_add_vlan(struct i40evf_adapter *adapter, u16 vlan) | |
680 | { | |
13acb546 MW |
681 | struct i40evf_vlan_filter *f = NULL; |
682 | int count = 50; | |
683 | ||
684 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
685 | &adapter->crit_section)) { | |
686 | udelay(1); | |
687 | if (--count == 0) | |
688 | goto out; | |
689 | } | |
5eae00c5 GR |
690 | |
691 | f = i40evf_find_vlan(adapter, vlan); | |
348d4994 | 692 | if (!f) { |
5eae00c5 | 693 | f = kzalloc(sizeof(*f), GFP_ATOMIC); |
348d4994 | 694 | if (!f) |
13acb546 | 695 | goto clearout; |
249c8b8d | 696 | |
5eae00c5 GR |
697 | f->vlan = vlan; |
698 | ||
699 | INIT_LIST_HEAD(&f->list); | |
700 | list_add(&f->list, &adapter->vlan_filter_list); | |
701 | f->add = true; | |
702 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER; | |
703 | } | |
704 | ||
13acb546 MW |
705 | clearout: |
706 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
707 | out: | |
5eae00c5 GR |
708 | return f; |
709 | } | |
710 | ||
711 | /** | |
712 | * i40evf_del_vlan - Remove a vlan filter from the list | |
713 | * @adapter: board private structure | |
714 | * @vlan: VLAN tag | |
715 | **/ | |
716 | static void i40evf_del_vlan(struct i40evf_adapter *adapter, u16 vlan) | |
717 | { | |
718 | struct i40evf_vlan_filter *f; | |
13acb546 MW |
719 | int count = 50; |
720 | ||
721 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
722 | &adapter->crit_section)) { | |
723 | udelay(1); | |
724 | if (--count == 0) | |
725 | return; | |
726 | } | |
5eae00c5 GR |
727 | |
728 | f = i40evf_find_vlan(adapter, vlan); | |
729 | if (f) { | |
730 | f->remove = true; | |
731 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER; | |
732 | } | |
13acb546 | 733 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
5eae00c5 GR |
734 | } |
735 | ||
736 | /** | |
737 | * i40evf_vlan_rx_add_vid - Add a VLAN filter to a device | |
738 | * @netdev: network device struct | |
739 | * @vid: VLAN tag | |
740 | **/ | |
741 | static int i40evf_vlan_rx_add_vid(struct net_device *netdev, | |
75a64435 | 742 | __always_unused __be16 proto, u16 vid) |
5eae00c5 GR |
743 | { |
744 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
745 | ||
8ed995ff MW |
746 | if (!VLAN_ALLOWED(adapter)) |
747 | return -EIO; | |
5eae00c5 GR |
748 | if (i40evf_add_vlan(adapter, vid) == NULL) |
749 | return -ENOMEM; | |
750 | return 0; | |
751 | } | |
752 | ||
753 | /** | |
754 | * i40evf_vlan_rx_kill_vid - Remove a VLAN filter from a device | |
755 | * @netdev: network device struct | |
756 | * @vid: VLAN tag | |
757 | **/ | |
758 | static int i40evf_vlan_rx_kill_vid(struct net_device *netdev, | |
75a64435 | 759 | __always_unused __be16 proto, u16 vid) |
5eae00c5 GR |
760 | { |
761 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
762 | ||
8ed995ff MW |
763 | if (VLAN_ALLOWED(adapter)) { |
764 | i40evf_del_vlan(adapter, vid); | |
765 | return 0; | |
766 | } | |
767 | return -EIO; | |
5eae00c5 GR |
768 | } |
769 | ||
770 | /** | |
771 | * i40evf_find_filter - Search filter list for specific mac filter | |
772 | * @adapter: board private structure | |
773 | * @macaddr: the MAC address | |
774 | * | |
775 | * Returns ptr to the filter object or NULL | |
776 | **/ | |
777 | static struct | |
778 | i40evf_mac_filter *i40evf_find_filter(struct i40evf_adapter *adapter, | |
779 | u8 *macaddr) | |
780 | { | |
781 | struct i40evf_mac_filter *f; | |
782 | ||
783 | if (!macaddr) | |
784 | return NULL; | |
785 | ||
786 | list_for_each_entry(f, &adapter->mac_filter_list, list) { | |
787 | if (ether_addr_equal(macaddr, f->macaddr)) | |
788 | return f; | |
789 | } | |
790 | return NULL; | |
791 | } | |
792 | ||
793 | /** | |
794 | * i40e_add_filter - Add a mac filter to the filter list | |
795 | * @adapter: board private structure | |
796 | * @macaddr: the MAC address | |
797 | * | |
798 | * Returns ptr to the filter object or NULL when no memory available. | |
799 | **/ | |
800 | static struct | |
801 | i40evf_mac_filter *i40evf_add_filter(struct i40evf_adapter *adapter, | |
802 | u8 *macaddr) | |
803 | { | |
804 | struct i40evf_mac_filter *f; | |
54e16f64 | 805 | int count = 50; |
5eae00c5 GR |
806 | |
807 | if (!macaddr) | |
808 | return NULL; | |
809 | ||
810 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
54e16f64 | 811 | &adapter->crit_section)) { |
b65476cd | 812 | udelay(1); |
54e16f64 MW |
813 | if (--count == 0) |
814 | return NULL; | |
815 | } | |
5eae00c5 GR |
816 | |
817 | f = i40evf_find_filter(adapter, macaddr); | |
348d4994 | 818 | if (!f) { |
5eae00c5 | 819 | f = kzalloc(sizeof(*f), GFP_ATOMIC); |
348d4994 | 820 | if (!f) { |
5eae00c5 GR |
821 | clear_bit(__I40EVF_IN_CRITICAL_TASK, |
822 | &adapter->crit_section); | |
823 | return NULL; | |
824 | } | |
825 | ||
9a173901 | 826 | ether_addr_copy(f->macaddr, macaddr); |
5eae00c5 GR |
827 | |
828 | list_add(&f->list, &adapter->mac_filter_list); | |
829 | f->add = true; | |
830 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; | |
831 | } | |
832 | ||
833 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
834 | return f; | |
835 | } | |
836 | ||
837 | /** | |
838 | * i40evf_set_mac - NDO callback to set port mac address | |
839 | * @netdev: network interface device structure | |
840 | * @p: pointer to an address structure | |
841 | * | |
842 | * Returns 0 on success, negative on failure | |
843 | **/ | |
844 | static int i40evf_set_mac(struct net_device *netdev, void *p) | |
845 | { | |
846 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
847 | struct i40e_hw *hw = &adapter->hw; | |
848 | struct i40evf_mac_filter *f; | |
849 | struct sockaddr *addr = p; | |
850 | ||
851 | if (!is_valid_ether_addr(addr->sa_data)) | |
852 | return -EADDRNOTAVAIL; | |
853 | ||
854 | if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) | |
855 | return 0; | |
856 | ||
14e52ee2 MW |
857 | if (adapter->flags & I40EVF_FLAG_ADDR_SET_BY_PF) |
858 | return -EPERM; | |
859 | ||
860 | f = i40evf_find_filter(adapter, hw->mac.addr); | |
861 | if (f) { | |
862 | f->remove = true; | |
863 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; | |
864 | } | |
865 | ||
5eae00c5 GR |
866 | f = i40evf_add_filter(adapter, addr->sa_data); |
867 | if (f) { | |
9a173901 GR |
868 | ether_addr_copy(hw->mac.addr, addr->sa_data); |
869 | ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr); | |
5eae00c5 GR |
870 | } |
871 | ||
872 | return (f == NULL) ? -ENOMEM : 0; | |
873 | } | |
874 | ||
875 | /** | |
876 | * i40evf_set_rx_mode - NDO callback to set the netdev filters | |
877 | * @netdev: network interface device structure | |
878 | **/ | |
879 | static void i40evf_set_rx_mode(struct net_device *netdev) | |
880 | { | |
881 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
882 | struct i40evf_mac_filter *f, *ftmp; | |
883 | struct netdev_hw_addr *uca; | |
884 | struct netdev_hw_addr *mca; | |
2f41f335 | 885 | struct netdev_hw_addr *ha; |
54e16f64 | 886 | int count = 50; |
5eae00c5 GR |
887 | |
888 | /* add addr if not already in the filter list */ | |
889 | netdev_for_each_uc_addr(uca, netdev) { | |
890 | i40evf_add_filter(adapter, uca->addr); | |
891 | } | |
892 | netdev_for_each_mc_addr(mca, netdev) { | |
893 | i40evf_add_filter(adapter, mca->addr); | |
894 | } | |
895 | ||
896 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
54e16f64 | 897 | &adapter->crit_section)) { |
b65476cd | 898 | udelay(1); |
54e16f64 MW |
899 | if (--count == 0) { |
900 | dev_err(&adapter->pdev->dev, | |
901 | "Failed to get lock in %s\n", __func__); | |
902 | return; | |
903 | } | |
904 | } | |
5eae00c5 GR |
905 | /* remove filter if not in netdev list */ |
906 | list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { | |
2f41f335 SN |
907 | netdev_for_each_mc_addr(mca, netdev) |
908 | if (ether_addr_equal(mca->addr, f->macaddr)) | |
909 | goto bottom_of_search_loop; | |
910 | ||
911 | netdev_for_each_uc_addr(uca, netdev) | |
912 | if (ether_addr_equal(uca->addr, f->macaddr)) | |
913 | goto bottom_of_search_loop; | |
914 | ||
915 | for_each_dev_addr(netdev, ha) | |
916 | if (ether_addr_equal(ha->addr, f->macaddr)) | |
917 | goto bottom_of_search_loop; | |
918 | ||
919 | if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr)) | |
920 | goto bottom_of_search_loop; | |
921 | ||
922 | /* f->macaddr wasn't found in uc, mc, or ha list so delete it */ | |
923 | f->remove = true; | |
924 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; | |
925 | ||
926 | bottom_of_search_loop: | |
927 | continue; | |
5eae00c5 | 928 | } |
47d34839 ASJ |
929 | |
930 | if (netdev->flags & IFF_PROMISC && | |
931 | !(adapter->flags & I40EVF_FLAG_PROMISC_ON)) | |
932 | adapter->aq_required |= I40EVF_FLAG_AQ_REQUEST_PROMISC; | |
933 | else if (!(netdev->flags & IFF_PROMISC) && | |
934 | adapter->flags & I40EVF_FLAG_PROMISC_ON) | |
935 | adapter->aq_required |= I40EVF_FLAG_AQ_RELEASE_PROMISC; | |
936 | ||
5eae00c5 GR |
937 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
938 | } | |
939 | ||
940 | /** | |
941 | * i40evf_napi_enable_all - enable NAPI on all queue vectors | |
942 | * @adapter: board private structure | |
943 | **/ | |
944 | static void i40evf_napi_enable_all(struct i40evf_adapter *adapter) | |
945 | { | |
946 | int q_idx; | |
947 | struct i40e_q_vector *q_vector; | |
948 | int q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
949 | ||
950 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
951 | struct napi_struct *napi; | |
75a64435 | 952 | |
7d96ba1a | 953 | q_vector = &adapter->q_vectors[q_idx]; |
5eae00c5 GR |
954 | napi = &q_vector->napi; |
955 | napi_enable(napi); | |
956 | } | |
957 | } | |
958 | ||
959 | /** | |
960 | * i40evf_napi_disable_all - disable NAPI on all queue vectors | |
961 | * @adapter: board private structure | |
962 | **/ | |
963 | static void i40evf_napi_disable_all(struct i40evf_adapter *adapter) | |
964 | { | |
965 | int q_idx; | |
966 | struct i40e_q_vector *q_vector; | |
967 | int q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
968 | ||
969 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
7d96ba1a | 970 | q_vector = &adapter->q_vectors[q_idx]; |
5eae00c5 GR |
971 | napi_disable(&q_vector->napi); |
972 | } | |
973 | } | |
974 | ||
975 | /** | |
976 | * i40evf_configure - set up transmit and receive data structures | |
977 | * @adapter: board private structure | |
978 | **/ | |
979 | static void i40evf_configure(struct i40evf_adapter *adapter) | |
980 | { | |
981 | struct net_device *netdev = adapter->netdev; | |
982 | int i; | |
983 | ||
984 | i40evf_set_rx_mode(netdev); | |
985 | ||
986 | i40evf_configure_tx(adapter); | |
987 | i40evf_configure_rx(adapter); | |
988 | adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES; | |
989 | ||
cc052927 | 990 | for (i = 0; i < adapter->num_active_queues; i++) { |
0dd438d8 | 991 | struct i40e_ring *ring = &adapter->rx_rings[i]; |
75a64435 | 992 | |
b163098e | 993 | i40evf_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring)); |
5eae00c5 GR |
994 | } |
995 | } | |
996 | ||
997 | /** | |
998 | * i40evf_up_complete - Finish the last steps of bringing up a connection | |
999 | * @adapter: board private structure | |
1000 | **/ | |
1001 | static int i40evf_up_complete(struct i40evf_adapter *adapter) | |
1002 | { | |
1003 | adapter->state = __I40EVF_RUNNING; | |
1004 | clear_bit(__I40E_DOWN, &adapter->vsi.state); | |
1005 | ||
1006 | i40evf_napi_enable_all(adapter); | |
1007 | ||
1008 | adapter->aq_required |= I40EVF_FLAG_AQ_ENABLE_QUEUES; | |
1009 | mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); | |
1010 | return 0; | |
1011 | } | |
1012 | ||
5eae00c5 GR |
1013 | /** |
1014 | * i40e_down - Shutdown the connection processing | |
1015 | * @adapter: board private structure | |
1016 | **/ | |
1017 | void i40evf_down(struct i40evf_adapter *adapter) | |
1018 | { | |
1019 | struct net_device *netdev = adapter->netdev; | |
1020 | struct i40evf_mac_filter *f; | |
1021 | ||
209dc4da | 1022 | if (adapter->state <= __I40EVF_DOWN_PENDING) |
ddf0b3a6 MW |
1023 | return; |
1024 | ||
53d0b3ae MW |
1025 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, |
1026 | &adapter->crit_section)) | |
1027 | usleep_range(500, 1000); | |
1028 | ||
63e18c25 MW |
1029 | netif_carrier_off(netdev); |
1030 | netif_tx_disable(netdev); | |
748c434b | 1031 | i40evf_napi_disable_all(adapter); |
63e18c25 | 1032 | i40evf_irq_disable(adapter); |
53d0b3ae | 1033 | |
ef8693eb | 1034 | /* remove all MAC filters */ |
5eae00c5 GR |
1035 | list_for_each_entry(f, &adapter->mac_filter_list, list) { |
1036 | f->remove = true; | |
1037 | } | |
ed1f5b58 MW |
1038 | /* remove all VLAN filters */ |
1039 | list_for_each_entry(f, &adapter->vlan_filter_list, list) { | |
1040 | f->remove = true; | |
1041 | } | |
ef8693eb MW |
1042 | if (!(adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) && |
1043 | adapter->state != __I40EVF_RESETTING) { | |
53d0b3ae MW |
1044 | /* cancel any current operation */ |
1045 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
53d0b3ae MW |
1046 | /* Schedule operations to close down the HW. Don't wait |
1047 | * here for this to complete. The watchdog is still running | |
1048 | * and it will take care of this. | |
1049 | */ | |
1050 | adapter->aq_required = I40EVF_FLAG_AQ_DEL_MAC_FILTER; | |
ed1f5b58 | 1051 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER; |
ef8693eb | 1052 | adapter->aq_required |= I40EVF_FLAG_AQ_DISABLE_QUEUES; |
ef8693eb | 1053 | } |
5eae00c5 | 1054 | |
53d0b3ae | 1055 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
5eae00c5 GR |
1056 | } |
1057 | ||
1058 | /** | |
1059 | * i40evf_acquire_msix_vectors - Setup the MSIX capability | |
1060 | * @adapter: board private structure | |
1061 | * @vectors: number of vectors to request | |
1062 | * | |
1063 | * Work with the OS to set up the MSIX vectors needed. | |
1064 | * | |
1065 | * Returns 0 on success, negative on failure | |
1066 | **/ | |
1067 | static int | |
1068 | i40evf_acquire_msix_vectors(struct i40evf_adapter *adapter, int vectors) | |
1069 | { | |
1070 | int err, vector_threshold; | |
1071 | ||
1072 | /* We'll want at least 3 (vector_threshold): | |
1073 | * 0) Other (Admin Queue and link, mostly) | |
1074 | * 1) TxQ[0] Cleanup | |
1075 | * 2) RxQ[0] Cleanup | |
1076 | */ | |
1077 | vector_threshold = MIN_MSIX_COUNT; | |
1078 | ||
1079 | /* The more we get, the more we will assign to Tx/Rx Cleanup | |
1080 | * for the separate queues...where Rx Cleanup >= Tx Cleanup. | |
1081 | * Right now, we simply care about how many we'll get; we'll | |
1082 | * set them up later while requesting irq's. | |
1083 | */ | |
fc2f2f5d AG |
1084 | err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries, |
1085 | vector_threshold, vectors); | |
1086 | if (err < 0) { | |
80e72893 | 1087 | dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n"); |
5eae00c5 GR |
1088 | kfree(adapter->msix_entries); |
1089 | adapter->msix_entries = NULL; | |
fc2f2f5d | 1090 | return err; |
5eae00c5 | 1091 | } |
fc2f2f5d AG |
1092 | |
1093 | /* Adjust for only the vectors we'll use, which is minimum | |
1094 | * of max_msix_q_vectors + NONQ_VECS, or the number of | |
1095 | * vectors we were allocated. | |
1096 | */ | |
1097 | adapter->num_msix_vectors = err; | |
1098 | return 0; | |
5eae00c5 GR |
1099 | } |
1100 | ||
1101 | /** | |
1102 | * i40evf_free_queues - Free memory for all rings | |
1103 | * @adapter: board private structure to initialize | |
1104 | * | |
1105 | * Free all of the memory associated with queue pairs. | |
1106 | **/ | |
1107 | static void i40evf_free_queues(struct i40evf_adapter *adapter) | |
1108 | { | |
5eae00c5 GR |
1109 | if (!adapter->vsi_res) |
1110 | return; | |
0dd438d8 | 1111 | kfree(adapter->tx_rings); |
10311540 | 1112 | adapter->tx_rings = NULL; |
0dd438d8 | 1113 | kfree(adapter->rx_rings); |
10311540 | 1114 | adapter->rx_rings = NULL; |
5eae00c5 GR |
1115 | } |
1116 | ||
1117 | /** | |
1118 | * i40evf_alloc_queues - Allocate memory for all rings | |
1119 | * @adapter: board private structure to initialize | |
1120 | * | |
1121 | * We allocate one ring per queue at run-time since we don't know the | |
1122 | * number of queues at compile-time. The polling_netdev array is | |
1123 | * intended for Multiqueue, but should work fine with a single queue. | |
1124 | **/ | |
1125 | static int i40evf_alloc_queues(struct i40evf_adapter *adapter) | |
1126 | { | |
1127 | int i; | |
1128 | ||
0dd438d8 MW |
1129 | adapter->tx_rings = kcalloc(adapter->num_active_queues, |
1130 | sizeof(struct i40e_ring), GFP_KERNEL); | |
1131 | if (!adapter->tx_rings) | |
1132 | goto err_out; | |
1133 | adapter->rx_rings = kcalloc(adapter->num_active_queues, | |
1134 | sizeof(struct i40e_ring), GFP_KERNEL); | |
1135 | if (!adapter->rx_rings) | |
1136 | goto err_out; | |
1137 | ||
cc052927 | 1138 | for (i = 0; i < adapter->num_active_queues; i++) { |
5eae00c5 GR |
1139 | struct i40e_ring *tx_ring; |
1140 | struct i40e_ring *rx_ring; | |
1141 | ||
0dd438d8 | 1142 | tx_ring = &adapter->tx_rings[i]; |
5eae00c5 GR |
1143 | |
1144 | tx_ring->queue_index = i; | |
1145 | tx_ring->netdev = adapter->netdev; | |
1146 | tx_ring->dev = &adapter->pdev->dev; | |
d732a184 | 1147 | tx_ring->count = adapter->tx_desc_count; |
1f012279 ASJ |
1148 | if (adapter->flags & I40E_FLAG_WB_ON_ITR_CAPABLE) |
1149 | tx_ring->flags |= I40E_TXR_FLAGS_WB_ON_ITR; | |
5eae00c5 | 1150 | |
0dd438d8 | 1151 | rx_ring = &adapter->rx_rings[i]; |
5eae00c5 GR |
1152 | rx_ring->queue_index = i; |
1153 | rx_ring->netdev = adapter->netdev; | |
1154 | rx_ring->dev = &adapter->pdev->dev; | |
d732a184 | 1155 | rx_ring->count = adapter->rx_desc_count; |
5eae00c5 GR |
1156 | } |
1157 | ||
1158 | return 0; | |
1159 | ||
1160 | err_out: | |
1161 | i40evf_free_queues(adapter); | |
1162 | return -ENOMEM; | |
1163 | } | |
1164 | ||
1165 | /** | |
1166 | * i40evf_set_interrupt_capability - set MSI-X or FAIL if not supported | |
1167 | * @adapter: board private structure to initialize | |
1168 | * | |
1169 | * Attempt to configure the interrupts using the best available | |
1170 | * capabilities of the hardware and the kernel. | |
1171 | **/ | |
1172 | static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter) | |
1173 | { | |
1174 | int vector, v_budget; | |
1175 | int pairs = 0; | |
1176 | int err = 0; | |
1177 | ||
1178 | if (!adapter->vsi_res) { | |
1179 | err = -EIO; | |
1180 | goto out; | |
1181 | } | |
cc052927 | 1182 | pairs = adapter->num_active_queues; |
5eae00c5 GR |
1183 | |
1184 | /* It's easy to be greedy for MSI-X vectors, but it really | |
1185 | * doesn't do us much good if we have a lot more vectors | |
1186 | * than CPU's. So let's be conservative and only ask for | |
1187 | * (roughly) twice the number of vectors as there are CPU's. | |
1188 | */ | |
30a500e2 MW |
1189 | v_budget = min_t(int, pairs, (int)(num_online_cpus() * 2)) + NONQ_VECS; |
1190 | v_budget = min_t(int, v_budget, (int)adapter->vf_res->max_vectors); | |
5eae00c5 | 1191 | |
5eae00c5 GR |
1192 | adapter->msix_entries = kcalloc(v_budget, |
1193 | sizeof(struct msix_entry), GFP_KERNEL); | |
1194 | if (!adapter->msix_entries) { | |
1195 | err = -ENOMEM; | |
1196 | goto out; | |
1197 | } | |
1198 | ||
1199 | for (vector = 0; vector < v_budget; vector++) | |
1200 | adapter->msix_entries[vector].entry = vector; | |
1201 | ||
313ed2d5 | 1202 | err = i40evf_acquire_msix_vectors(adapter, v_budget); |
5eae00c5 GR |
1203 | |
1204 | out: | |
e6c4cf6f MW |
1205 | netif_set_real_num_rx_queues(adapter->netdev, pairs); |
1206 | netif_set_real_num_tx_queues(adapter->netdev, pairs); | |
5eae00c5 GR |
1207 | return err; |
1208 | } | |
1209 | ||
e25d00b8 | 1210 | /** |
43a3d9ba MW |
1211 | * i40e_config_rss_aq - Configure RSS keys and lut by using AQ commands |
1212 | * @adapter: board private structure | |
2c86ac3c HZ |
1213 | * |
1214 | * Return 0 on success, negative on failure | |
e25d00b8 | 1215 | **/ |
43a3d9ba | 1216 | static int i40evf_config_rss_aq(struct i40evf_adapter *adapter) |
e25d00b8 | 1217 | { |
43a3d9ba MW |
1218 | struct i40e_aqc_get_set_rss_key_data *rss_key = |
1219 | (struct i40e_aqc_get_set_rss_key_data *)adapter->rss_key; | |
e25d00b8 | 1220 | struct i40e_hw *hw = &adapter->hw; |
2c86ac3c | 1221 | int ret = 0; |
e25d00b8 | 1222 | |
e25d00b8 ASJ |
1223 | if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) { |
1224 | /* bail because we already have a command pending */ | |
e3d132d1 | 1225 | dev_err(&adapter->pdev->dev, "Cannot configure RSS, command %d pending\n", |
e25d00b8 | 1226 | adapter->current_op); |
2c86ac3c | 1227 | return -EBUSY; |
e25d00b8 ASJ |
1228 | } |
1229 | ||
43a3d9ba MW |
1230 | ret = i40evf_aq_set_rss_key(hw, adapter->vsi.id, rss_key); |
1231 | if (ret) { | |
1232 | dev_err(&adapter->pdev->dev, "Cannot set RSS key, err %s aq_err %s\n", | |
1233 | i40evf_stat_str(hw, ret), | |
1234 | i40evf_aq_str(hw, hw->aq.asq_last_status)); | |
1235 | return ret; | |
1236 | ||
2c86ac3c | 1237 | } |
e25d00b8 | 1238 | |
43a3d9ba MW |
1239 | ret = i40evf_aq_set_rss_lut(hw, adapter->vsi.id, false, |
1240 | adapter->rss_lut, adapter->rss_lut_size); | |
1241 | if (ret) { | |
1242 | dev_err(&adapter->pdev->dev, "Cannot set RSS lut, err %s aq_err %s\n", | |
1243 | i40evf_stat_str(hw, ret), | |
1244 | i40evf_aq_str(hw, hw->aq.asq_last_status)); | |
e25d00b8 ASJ |
1245 | } |
1246 | ||
2c86ac3c | 1247 | return ret; |
43a3d9ba | 1248 | |
e25d00b8 ASJ |
1249 | } |
1250 | ||
1251 | /** | |
2c86ac3c | 1252 | * i40evf_config_rss_reg - Configure RSS keys and lut by writing registers |
43a3d9ba | 1253 | * @adapter: board private structure |
2c86ac3c HZ |
1254 | * |
1255 | * Returns 0 on success, negative on failure | |
e25d00b8 | 1256 | **/ |
43a3d9ba | 1257 | static int i40evf_config_rss_reg(struct i40evf_adapter *adapter) |
e25d00b8 ASJ |
1258 | { |
1259 | struct i40e_hw *hw = &adapter->hw; | |
43a3d9ba | 1260 | u32 *dw; |
2c86ac3c | 1261 | u16 i; |
e25d00b8 | 1262 | |
43a3d9ba MW |
1263 | dw = (u32 *)adapter->rss_key; |
1264 | for (i = 0; i <= adapter->rss_key_size / 4; i++) | |
1265 | wr32(hw, I40E_VFQF_HKEY(i), dw[i]); | |
2c86ac3c | 1266 | |
43a3d9ba MW |
1267 | dw = (u32 *)adapter->rss_lut; |
1268 | for (i = 0; i <= adapter->rss_lut_size / 4; i++) | |
1269 | wr32(hw, I40E_VFQF_HLUT(i), dw[i]); | |
2c86ac3c | 1270 | |
e25d00b8 | 1271 | i40e_flush(hw); |
2c86ac3c HZ |
1272 | |
1273 | return 0; | |
1274 | } | |
1275 | ||
1276 | /** | |
1277 | * i40evf_config_rss - Configure RSS keys and lut | |
43a3d9ba | 1278 | * @adapter: board private structure |
90b02b43 HZ |
1279 | * |
1280 | * Returns 0 on success, negative on failure | |
1281 | **/ | |
43a3d9ba | 1282 | int i40evf_config_rss(struct i40evf_adapter *adapter) |
90b02b43 | 1283 | { |
90b02b43 | 1284 | |
43a3d9ba MW |
1285 | if (RSS_PF(adapter)) { |
1286 | adapter->aq_required |= I40EVF_FLAG_AQ_SET_RSS_LUT | | |
1287 | I40EVF_FLAG_AQ_SET_RSS_KEY; | |
1288 | return 0; | |
1289 | } else if (RSS_AQ(adapter)) { | |
1290 | return i40evf_config_rss_aq(adapter); | |
1291 | } else { | |
1292 | return i40evf_config_rss_reg(adapter); | |
1293 | } | |
90b02b43 HZ |
1294 | } |
1295 | ||
2c86ac3c HZ |
1296 | /** |
1297 | * i40evf_fill_rss_lut - Fill the lut with default values | |
43a3d9ba | 1298 | * @adapter: board private structure |
2c86ac3c | 1299 | **/ |
43a3d9ba | 1300 | static void i40evf_fill_rss_lut(struct i40evf_adapter *adapter) |
2c86ac3c HZ |
1301 | { |
1302 | u16 i; | |
1303 | ||
43a3d9ba MW |
1304 | for (i = 0; i < adapter->rss_lut_size; i++) |
1305 | adapter->rss_lut[i] = i % adapter->num_active_queues; | |
e25d00b8 ASJ |
1306 | } |
1307 | ||
1308 | /** | |
96a81986 | 1309 | * i40evf_init_rss - Prepare for RSS |
e25d00b8 | 1310 | * @adapter: board private structure |
2c86ac3c HZ |
1311 | * |
1312 | * Return 0 on success, negative on failure | |
e25d00b8 | 1313 | **/ |
2c86ac3c | 1314 | static int i40evf_init_rss(struct i40evf_adapter *adapter) |
e25d00b8 ASJ |
1315 | { |
1316 | struct i40e_hw *hw = &adapter->hw; | |
2c86ac3c | 1317 | int ret; |
e25d00b8 | 1318 | |
43a3d9ba MW |
1319 | if (!RSS_PF(adapter)) { |
1320 | /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */ | |
1321 | if (adapter->vf_res->vf_offload_flags & | |
1322 | I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2) | |
1323 | adapter->hena = I40E_DEFAULT_RSS_HENA_EXPANDED; | |
1324 | else | |
1325 | adapter->hena = I40E_DEFAULT_RSS_HENA; | |
e25d00b8 | 1326 | |
43a3d9ba MW |
1327 | wr32(hw, I40E_VFQF_HENA(0), (u32)adapter->hena); |
1328 | wr32(hw, I40E_VFQF_HENA(1), (u32)(adapter->hena >> 32)); | |
1329 | } | |
66f9af85 | 1330 | |
43a3d9ba | 1331 | i40evf_fill_rss_lut(adapter); |
66f9af85 | 1332 | |
43a3d9ba MW |
1333 | netdev_rss_key_fill((void *)adapter->rss_key, adapter->rss_key_size); |
1334 | ret = i40evf_config_rss(adapter); | |
2c86ac3c HZ |
1335 | |
1336 | return ret; | |
e25d00b8 ASJ |
1337 | } |
1338 | ||
5eae00c5 GR |
1339 | /** |
1340 | * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors | |
1341 | * @adapter: board private structure to initialize | |
1342 | * | |
1343 | * We allocate one q_vector per queue interrupt. If allocation fails we | |
1344 | * return -ENOMEM. | |
1345 | **/ | |
1346 | static int i40evf_alloc_q_vectors(struct i40evf_adapter *adapter) | |
1347 | { | |
7d96ba1a | 1348 | int q_idx = 0, num_q_vectors; |
5eae00c5 GR |
1349 | struct i40e_q_vector *q_vector; |
1350 | ||
1351 | num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
0dd438d8 | 1352 | adapter->q_vectors = kcalloc(num_q_vectors, sizeof(*q_vector), |
7d96ba1a MW |
1353 | GFP_KERNEL); |
1354 | if (!adapter->q_vectors) | |
311f23e9 | 1355 | return -ENOMEM; |
5eae00c5 GR |
1356 | |
1357 | for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { | |
7d96ba1a | 1358 | q_vector = &adapter->q_vectors[q_idx]; |
5eae00c5 GR |
1359 | q_vector->adapter = adapter; |
1360 | q_vector->vsi = &adapter->vsi; | |
1361 | q_vector->v_idx = q_idx; | |
1362 | netif_napi_add(adapter->netdev, &q_vector->napi, | |
75a64435 | 1363 | i40evf_napi_poll, NAPI_POLL_WEIGHT); |
5eae00c5 GR |
1364 | } |
1365 | ||
1366 | return 0; | |
5eae00c5 GR |
1367 | } |
1368 | ||
1369 | /** | |
1370 | * i40evf_free_q_vectors - Free memory allocated for interrupt vectors | |
1371 | * @adapter: board private structure to initialize | |
1372 | * | |
1373 | * This function frees the memory allocated to the q_vectors. In addition if | |
1374 | * NAPI is enabled it will delete any references to the NAPI struct prior | |
1375 | * to freeing the q_vector. | |
1376 | **/ | |
1377 | static void i40evf_free_q_vectors(struct i40evf_adapter *adapter) | |
1378 | { | |
1379 | int q_idx, num_q_vectors; | |
1380 | int napi_vectors; | |
1381 | ||
1382 | num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
cc052927 | 1383 | napi_vectors = adapter->num_active_queues; |
5eae00c5 GR |
1384 | |
1385 | for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { | |
7d96ba1a | 1386 | struct i40e_q_vector *q_vector = &adapter->q_vectors[q_idx]; |
5eae00c5 GR |
1387 | if (q_idx < napi_vectors) |
1388 | netif_napi_del(&q_vector->napi); | |
5eae00c5 | 1389 | } |
7d96ba1a | 1390 | kfree(adapter->q_vectors); |
5eae00c5 GR |
1391 | } |
1392 | ||
1393 | /** | |
1394 | * i40evf_reset_interrupt_capability - Reset MSIX setup | |
1395 | * @adapter: board private structure | |
1396 | * | |
1397 | **/ | |
1398 | void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter) | |
1399 | { | |
1400 | pci_disable_msix(adapter->pdev); | |
1401 | kfree(adapter->msix_entries); | |
1402 | adapter->msix_entries = NULL; | |
5eae00c5 GR |
1403 | } |
1404 | ||
1405 | /** | |
1406 | * i40evf_init_interrupt_scheme - Determine if MSIX is supported and init | |
1407 | * @adapter: board private structure to initialize | |
1408 | * | |
1409 | **/ | |
1410 | int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter) | |
1411 | { | |
1412 | int err; | |
1413 | ||
1414 | err = i40evf_set_interrupt_capability(adapter); | |
1415 | if (err) { | |
1416 | dev_err(&adapter->pdev->dev, | |
1417 | "Unable to setup interrupt capabilities\n"); | |
1418 | goto err_set_interrupt; | |
1419 | } | |
1420 | ||
1421 | err = i40evf_alloc_q_vectors(adapter); | |
1422 | if (err) { | |
1423 | dev_err(&adapter->pdev->dev, | |
1424 | "Unable to allocate memory for queue vectors\n"); | |
1425 | goto err_alloc_q_vectors; | |
1426 | } | |
1427 | ||
1428 | err = i40evf_alloc_queues(adapter); | |
1429 | if (err) { | |
1430 | dev_err(&adapter->pdev->dev, | |
1431 | "Unable to allocate memory for queues\n"); | |
1432 | goto err_alloc_queues; | |
1433 | } | |
1434 | ||
1435 | dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u", | |
75a64435 MW |
1436 | (adapter->num_active_queues > 1) ? "Enabled" : "Disabled", |
1437 | adapter->num_active_queues); | |
5eae00c5 GR |
1438 | |
1439 | return 0; | |
1440 | err_alloc_queues: | |
1441 | i40evf_free_q_vectors(adapter); | |
1442 | err_alloc_q_vectors: | |
1443 | i40evf_reset_interrupt_capability(adapter); | |
1444 | err_set_interrupt: | |
1445 | return err; | |
1446 | } | |
1447 | ||
66f9af85 | 1448 | /** |
43a3d9ba MW |
1449 | * i40evf_free_rss - Free memory used by RSS structs |
1450 | * @adapter: board private structure | |
66f9af85 | 1451 | **/ |
43a3d9ba | 1452 | static void i40evf_free_rss(struct i40evf_adapter *adapter) |
66f9af85 | 1453 | { |
43a3d9ba MW |
1454 | kfree(adapter->rss_key); |
1455 | adapter->rss_key = NULL; | |
66f9af85 | 1456 | |
43a3d9ba MW |
1457 | kfree(adapter->rss_lut); |
1458 | adapter->rss_lut = NULL; | |
66f9af85 HZ |
1459 | } |
1460 | ||
5eae00c5 GR |
1461 | /** |
1462 | * i40evf_watchdog_timer - Periodic call-back timer | |
1463 | * @data: pointer to adapter disguised as unsigned long | |
1464 | **/ | |
1465 | static void i40evf_watchdog_timer(unsigned long data) | |
1466 | { | |
1467 | struct i40evf_adapter *adapter = (struct i40evf_adapter *)data; | |
75a64435 | 1468 | |
5eae00c5 GR |
1469 | schedule_work(&adapter->watchdog_task); |
1470 | /* timer will be rescheduled in watchdog task */ | |
1471 | } | |
1472 | ||
1473 | /** | |
1474 | * i40evf_watchdog_task - Periodic call-back task | |
1475 | * @work: pointer to work_struct | |
1476 | **/ | |
1477 | static void i40evf_watchdog_task(struct work_struct *work) | |
1478 | { | |
1479 | struct i40evf_adapter *adapter = container_of(work, | |
75a64435 MW |
1480 | struct i40evf_adapter, |
1481 | watchdog_task); | |
5eae00c5 | 1482 | struct i40e_hw *hw = &adapter->hw; |
ee5c1e92 | 1483 | u32 reg_val; |
5eae00c5 | 1484 | |
ef8693eb MW |
1485 | if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section)) |
1486 | goto restart_watchdog; | |
1487 | ||
1488 | if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) { | |
ee5c1e92 MW |
1489 | reg_val = rd32(hw, I40E_VFGEN_RSTAT) & |
1490 | I40E_VFGEN_RSTAT_VFR_STATE_MASK; | |
1491 | if ((reg_val == I40E_VFR_VFACTIVE) || | |
1492 | (reg_val == I40E_VFR_COMPLETED)) { | |
ef8693eb MW |
1493 | /* A chance for redemption! */ |
1494 | dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n"); | |
1495 | adapter->state = __I40EVF_STARTUP; | |
1496 | adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED; | |
1497 | schedule_delayed_work(&adapter->init_task, 10); | |
1498 | clear_bit(__I40EVF_IN_CRITICAL_TASK, | |
1499 | &adapter->crit_section); | |
1500 | /* Don't reschedule the watchdog, since we've restarted | |
1501 | * the init task. When init_task contacts the PF and | |
1502 | * gets everything set up again, it'll restart the | |
1503 | * watchdog for us. Down, boy. Sit. Stay. Woof. | |
1504 | */ | |
1505 | return; | |
1506 | } | |
ef8693eb MW |
1507 | adapter->aq_required = 0; |
1508 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
5eae00c5 | 1509 | goto watchdog_done; |
ef8693eb | 1510 | } |
5eae00c5 | 1511 | |
ef8693eb MW |
1512 | if ((adapter->state < __I40EVF_DOWN) || |
1513 | (adapter->flags & I40EVF_FLAG_RESET_PENDING)) | |
5eae00c5 GR |
1514 | goto watchdog_done; |
1515 | ||
ef8693eb | 1516 | /* check for reset */ |
ee5c1e92 MW |
1517 | reg_val = rd32(hw, I40E_VF_ARQLEN1) & I40E_VF_ARQLEN1_ARQENABLE_MASK; |
1518 | if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) && !reg_val) { | |
5eae00c5 | 1519 | adapter->state = __I40EVF_RESETTING; |
ef8693eb | 1520 | adapter->flags |= I40EVF_FLAG_RESET_PENDING; |
249c8b8d | 1521 | dev_err(&adapter->pdev->dev, "Hardware reset detected\n"); |
5eae00c5 | 1522 | schedule_work(&adapter->reset_task); |
ef8693eb MW |
1523 | adapter->aq_required = 0; |
1524 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
5eae00c5 GR |
1525 | goto watchdog_done; |
1526 | } | |
1527 | ||
1528 | /* Process admin queue tasks. After init, everything gets done | |
1529 | * here so we don't race on the admin queue. | |
1530 | */ | |
ed636960 | 1531 | if (adapter->current_op) { |
0758e7cb MW |
1532 | if (!i40evf_asq_done(hw)) { |
1533 | dev_dbg(&adapter->pdev->dev, "Admin queue timeout\n"); | |
1534 | i40evf_send_api_ver(adapter); | |
1535 | } | |
5eae00c5 | 1536 | goto watchdog_done; |
0758e7cb | 1537 | } |
e6d038de MW |
1538 | if (adapter->aq_required & I40EVF_FLAG_AQ_GET_CONFIG) { |
1539 | i40evf_send_vf_config_msg(adapter); | |
1540 | goto watchdog_done; | |
1541 | } | |
5eae00c5 | 1542 | |
e284fc88 MW |
1543 | if (adapter->aq_required & I40EVF_FLAG_AQ_DISABLE_QUEUES) { |
1544 | i40evf_disable_queues(adapter); | |
1545 | goto watchdog_done; | |
1546 | } | |
1547 | ||
5eae00c5 GR |
1548 | if (adapter->aq_required & I40EVF_FLAG_AQ_MAP_VECTORS) { |
1549 | i40evf_map_queues(adapter); | |
1550 | goto watchdog_done; | |
1551 | } | |
1552 | ||
1553 | if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_MAC_FILTER) { | |
1554 | i40evf_add_ether_addrs(adapter); | |
1555 | goto watchdog_done; | |
1556 | } | |
1557 | ||
1558 | if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_VLAN_FILTER) { | |
1559 | i40evf_add_vlans(adapter); | |
1560 | goto watchdog_done; | |
1561 | } | |
1562 | ||
1563 | if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_MAC_FILTER) { | |
1564 | i40evf_del_ether_addrs(adapter); | |
1565 | goto watchdog_done; | |
1566 | } | |
1567 | ||
1568 | if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_VLAN_FILTER) { | |
1569 | i40evf_del_vlans(adapter); | |
1570 | goto watchdog_done; | |
1571 | } | |
1572 | ||
5eae00c5 GR |
1573 | if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_QUEUES) { |
1574 | i40evf_configure_queues(adapter); | |
1575 | goto watchdog_done; | |
1576 | } | |
1577 | ||
1578 | if (adapter->aq_required & I40EVF_FLAG_AQ_ENABLE_QUEUES) { | |
1579 | i40evf_enable_queues(adapter); | |
1580 | goto watchdog_done; | |
1581 | } | |
1582 | ||
e25d00b8 ASJ |
1583 | if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_RSS) { |
1584 | /* This message goes straight to the firmware, not the | |
1585 | * PF, so we don't have to set current_op as we will | |
1586 | * not get a response through the ARQ. | |
1587 | */ | |
96a81986 | 1588 | i40evf_init_rss(adapter); |
e25d00b8 ASJ |
1589 | adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_RSS; |
1590 | goto watchdog_done; | |
1591 | } | |
43a3d9ba MW |
1592 | if (adapter->aq_required & I40EVF_FLAG_AQ_GET_HENA) { |
1593 | i40evf_get_hena(adapter); | |
1594 | goto watchdog_done; | |
1595 | } | |
1596 | if (adapter->aq_required & I40EVF_FLAG_AQ_SET_HENA) { | |
1597 | i40evf_set_hena(adapter); | |
1598 | goto watchdog_done; | |
1599 | } | |
1600 | if (adapter->aq_required & I40EVF_FLAG_AQ_SET_RSS_KEY) { | |
1601 | i40evf_set_rss_key(adapter); | |
1602 | goto watchdog_done; | |
1603 | } | |
1604 | if (adapter->aq_required & I40EVF_FLAG_AQ_SET_RSS_LUT) { | |
1605 | i40evf_set_rss_lut(adapter); | |
1606 | goto watchdog_done; | |
1607 | } | |
e25d00b8 | 1608 | |
47d34839 ASJ |
1609 | if (adapter->aq_required & I40EVF_FLAG_AQ_REQUEST_PROMISC) { |
1610 | i40evf_set_promiscuous(adapter, I40E_FLAG_VF_UNICAST_PROMISC | | |
1611 | I40E_FLAG_VF_MULTICAST_PROMISC); | |
1612 | goto watchdog_done; | |
1613 | } | |
1614 | ||
1615 | if (adapter->aq_required & I40EVF_FLAG_AQ_RELEASE_PROMISC) { | |
1616 | i40evf_set_promiscuous(adapter, 0); | |
1617 | goto watchdog_done; | |
1618 | } | |
1619 | ||
5eae00c5 GR |
1620 | if (adapter->state == __I40EVF_RUNNING) |
1621 | i40evf_request_stats(adapter); | |
5eae00c5 | 1622 | watchdog_done: |
4870e176 MW |
1623 | if (adapter->state == __I40EVF_RUNNING) { |
1624 | i40evf_irq_enable_queues(adapter, ~0); | |
1625 | i40evf_fire_sw_int(adapter, 0xFF); | |
1626 | } else { | |
1627 | i40evf_fire_sw_int(adapter, 0x1); | |
1628 | } | |
1629 | ||
ef8693eb MW |
1630 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
1631 | restart_watchdog: | |
d3e2edb7 AS |
1632 | if (adapter->state == __I40EVF_REMOVE) |
1633 | return; | |
5eae00c5 GR |
1634 | if (adapter->aq_required) |
1635 | mod_timer(&adapter->watchdog_timer, | |
1636 | jiffies + msecs_to_jiffies(20)); | |
1637 | else | |
1638 | mod_timer(&adapter->watchdog_timer, jiffies + (HZ * 2)); | |
5eae00c5 GR |
1639 | schedule_work(&adapter->adminq_task); |
1640 | } | |
1641 | ||
67c818a1 MW |
1642 | #define I40EVF_RESET_WAIT_MS 10 |
1643 | #define I40EVF_RESET_WAIT_COUNT 500 | |
5eae00c5 GR |
1644 | /** |
1645 | * i40evf_reset_task - Call-back task to handle hardware reset | |
1646 | * @work: pointer to work_struct | |
1647 | * | |
1648 | * During reset we need to shut down and reinitialize the admin queue | |
1649 | * before we can use it to communicate with the PF again. We also clear | |
1650 | * and reinit the rings because that context is lost as well. | |
1651 | **/ | |
1652 | static void i40evf_reset_task(struct work_struct *work) | |
1653 | { | |
ef8693eb MW |
1654 | struct i40evf_adapter *adapter = container_of(work, |
1655 | struct i40evf_adapter, | |
1656 | reset_task); | |
ac833bbf | 1657 | struct net_device *netdev = adapter->netdev; |
5eae00c5 | 1658 | struct i40e_hw *hw = &adapter->hw; |
40d01366 | 1659 | struct i40evf_vlan_filter *vlf; |
ac833bbf | 1660 | struct i40evf_mac_filter *f; |
ee5c1e92 | 1661 | u32 reg_val; |
ac833bbf | 1662 | int i = 0, err; |
5eae00c5 GR |
1663 | |
1664 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
1665 | &adapter->crit_section)) | |
f98a2006 | 1666 | usleep_range(500, 1000); |
3526d800 | 1667 | |
67c818a1 | 1668 | i40evf_misc_irq_disable(adapter); |
3526d800 | 1669 | if (adapter->flags & I40EVF_FLAG_RESET_NEEDED) { |
67c818a1 MW |
1670 | adapter->flags &= ~I40EVF_FLAG_RESET_NEEDED; |
1671 | /* Restart the AQ here. If we have been reset but didn't | |
1672 | * detect it, or if the PF had to reinit, our AQ will be hosed. | |
1673 | */ | |
1674 | i40evf_shutdown_adminq(hw); | |
1675 | i40evf_init_adminq(hw); | |
3526d800 MW |
1676 | i40evf_request_reset(adapter); |
1677 | } | |
67c818a1 | 1678 | adapter->flags |= I40EVF_FLAG_RESET_PENDING; |
3526d800 | 1679 | |
ef8693eb MW |
1680 | /* poll until we see the reset actually happen */ |
1681 | for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { | |
ee5c1e92 MW |
1682 | reg_val = rd32(hw, I40E_VF_ARQLEN1) & |
1683 | I40E_VF_ARQLEN1_ARQENABLE_MASK; | |
1684 | if (!reg_val) | |
ef8693eb | 1685 | break; |
ee5c1e92 | 1686 | usleep_range(5000, 10000); |
ef8693eb MW |
1687 | } |
1688 | if (i == I40EVF_RESET_WAIT_COUNT) { | |
67c818a1 | 1689 | dev_info(&adapter->pdev->dev, "Never saw reset\n"); |
ef8693eb MW |
1690 | goto continue_reset; /* act like the reset happened */ |
1691 | } | |
5eae00c5 | 1692 | |
ef8693eb MW |
1693 | /* wait until the reset is complete and the PF is responding to us */ |
1694 | for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { | |
ee5c1e92 MW |
1695 | reg_val = rd32(hw, I40E_VFGEN_RSTAT) & |
1696 | I40E_VFGEN_RSTAT_VFR_STATE_MASK; | |
1697 | if (reg_val == I40E_VFR_VFACTIVE) | |
5eae00c5 | 1698 | break; |
c88e38cc | 1699 | msleep(I40EVF_RESET_WAIT_MS); |
5eae00c5 | 1700 | } |
509a447a | 1701 | pci_set_master(adapter->pdev); |
67c818a1 MW |
1702 | /* extra wait to make sure minimum wait is met */ |
1703 | msleep(I40EVF_RESET_WAIT_MS); | |
ef8693eb | 1704 | if (i == I40EVF_RESET_WAIT_COUNT) { |
874d1a10 | 1705 | struct i40evf_mac_filter *ftmp; |
6ba36a24 MW |
1706 | struct i40evf_vlan_filter *fv, *fvtmp; |
1707 | ||
5eae00c5 | 1708 | /* reset never finished */ |
80e72893 | 1709 | dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n", |
ee5c1e92 | 1710 | reg_val); |
ef8693eb MW |
1711 | adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED; |
1712 | ||
169f4076 MW |
1713 | if (netif_running(adapter->netdev)) { |
1714 | set_bit(__I40E_DOWN, &adapter->vsi.state); | |
ac833bbf | 1715 | netif_carrier_off(netdev); |
67c818a1 MW |
1716 | netif_tx_disable(netdev); |
1717 | i40evf_napi_disable_all(adapter); | |
1718 | i40evf_irq_disable(adapter); | |
169f4076 MW |
1719 | i40evf_free_traffic_irqs(adapter); |
1720 | i40evf_free_all_tx_resources(adapter); | |
1721 | i40evf_free_all_rx_resources(adapter); | |
1722 | } | |
6ba36a24 MW |
1723 | |
1724 | /* Delete all of the filters, both MAC and VLAN. */ | |
1725 | list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, | |
1726 | list) { | |
1727 | list_del(&f->list); | |
1728 | kfree(f); | |
1729 | } | |
67c818a1 | 1730 | |
6ba36a24 MW |
1731 | list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list, |
1732 | list) { | |
1733 | list_del(&fv->list); | |
1734 | kfree(fv); | |
1735 | } | |
1736 | ||
ef8693eb MW |
1737 | i40evf_free_misc_irq(adapter); |
1738 | i40evf_reset_interrupt_capability(adapter); | |
1739 | i40evf_free_queues(adapter); | |
d31944d6 | 1740 | i40evf_free_q_vectors(adapter); |
ef8693eb MW |
1741 | kfree(adapter->vf_res); |
1742 | i40evf_shutdown_adminq(hw); | |
1743 | adapter->netdev->flags &= ~IFF_UP; | |
1744 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
67c818a1 | 1745 | adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; |
9b9344f7 | 1746 | adapter->state = __I40EVF_DOWN; |
67c818a1 | 1747 | dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n"); |
ef8693eb | 1748 | return; /* Do not attempt to reinit. It's dead, Jim. */ |
5eae00c5 | 1749 | } |
ef8693eb MW |
1750 | |
1751 | continue_reset: | |
3c8e0b98 | 1752 | if (netif_running(adapter->netdev)) { |
3c8e0b98 | 1753 | netif_carrier_off(netdev); |
67c818a1 MW |
1754 | netif_tx_stop_all_queues(netdev); |
1755 | i40evf_napi_disable_all(adapter); | |
3c8e0b98 | 1756 | } |
67c818a1 | 1757 | i40evf_irq_disable(adapter); |
ac833bbf | 1758 | |
5eae00c5 | 1759 | adapter->state = __I40EVF_RESETTING; |
67c818a1 MW |
1760 | adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; |
1761 | ||
1762 | /* free the Tx/Rx rings and descriptors, might be better to just | |
1763 | * re-use them sometime in the future | |
1764 | */ | |
1765 | i40evf_free_all_rx_resources(adapter); | |
1766 | i40evf_free_all_tx_resources(adapter); | |
5eae00c5 GR |
1767 | |
1768 | /* kill and reinit the admin queue */ | |
1769 | if (i40evf_shutdown_adminq(hw)) | |
ac833bbf MW |
1770 | dev_warn(&adapter->pdev->dev, "Failed to shut down adminq\n"); |
1771 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
5eae00c5 GR |
1772 | err = i40evf_init_adminq(hw); |
1773 | if (err) | |
ac833bbf MW |
1774 | dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n", |
1775 | err); | |
5eae00c5 | 1776 | |
e6d038de MW |
1777 | adapter->aq_required = I40EVF_FLAG_AQ_GET_CONFIG; |
1778 | adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS; | |
ac833bbf MW |
1779 | |
1780 | /* re-add all MAC filters */ | |
1781 | list_for_each_entry(f, &adapter->mac_filter_list, list) { | |
1782 | f->add = true; | |
1783 | } | |
1784 | /* re-add all VLAN filters */ | |
40d01366 MW |
1785 | list_for_each_entry(vlf, &adapter->vlan_filter_list, list) { |
1786 | vlf->add = true; | |
ac833bbf | 1787 | } |
e6d038de | 1788 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; |
ac833bbf | 1789 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER; |
5eae00c5 | 1790 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
67c818a1 | 1791 | i40evf_misc_irq_enable(adapter); |
5eae00c5 GR |
1792 | |
1793 | mod_timer(&adapter->watchdog_timer, jiffies + 2); | |
1794 | ||
1795 | if (netif_running(adapter->netdev)) { | |
1796 | /* allocate transmit descriptors */ | |
1797 | err = i40evf_setup_all_tx_resources(adapter); | |
1798 | if (err) | |
1799 | goto reset_err; | |
1800 | ||
1801 | /* allocate receive descriptors */ | |
1802 | err = i40evf_setup_all_rx_resources(adapter); | |
1803 | if (err) | |
1804 | goto reset_err; | |
1805 | ||
1806 | i40evf_configure(adapter); | |
1807 | ||
1808 | err = i40evf_up_complete(adapter); | |
1809 | if (err) | |
1810 | goto reset_err; | |
1811 | ||
1812 | i40evf_irq_enable(adapter, true); | |
67c818a1 MW |
1813 | } else { |
1814 | adapter->state = __I40EVF_DOWN; | |
5eae00c5 | 1815 | } |
67c818a1 | 1816 | |
5eae00c5 GR |
1817 | return; |
1818 | reset_err: | |
80e72893 | 1819 | dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n"); |
5eae00c5 GR |
1820 | i40evf_close(adapter->netdev); |
1821 | } | |
1822 | ||
1823 | /** | |
1824 | * i40evf_adminq_task - worker thread to clean the admin queue | |
1825 | * @work: pointer to work_struct containing our data | |
1826 | **/ | |
1827 | static void i40evf_adminq_task(struct work_struct *work) | |
1828 | { | |
1829 | struct i40evf_adapter *adapter = | |
1830 | container_of(work, struct i40evf_adapter, adminq_task); | |
1831 | struct i40e_hw *hw = &adapter->hw; | |
1832 | struct i40e_arq_event_info event; | |
1833 | struct i40e_virtchnl_msg *v_msg; | |
1834 | i40e_status ret; | |
912257e5 | 1835 | u32 val, oldval; |
5eae00c5 GR |
1836 | u16 pending; |
1837 | ||
ef8693eb | 1838 | if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) |
7235448c | 1839 | goto out; |
ef8693eb | 1840 | |
1001dc37 MW |
1841 | event.buf_len = I40EVF_MAX_AQ_BUF_SIZE; |
1842 | event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL); | |
249c8b8d | 1843 | if (!event.msg_buf) |
7235448c | 1844 | goto out; |
249c8b8d | 1845 | |
5eae00c5 GR |
1846 | v_msg = (struct i40e_virtchnl_msg *)&event.desc; |
1847 | do { | |
1848 | ret = i40evf_clean_arq_element(hw, &event, &pending); | |
8b011ebb | 1849 | if (ret || !v_msg->v_opcode) |
5eae00c5 GR |
1850 | break; /* No event to process or error cleaning ARQ */ |
1851 | ||
1852 | i40evf_virtchnl_completion(adapter, v_msg->v_opcode, | |
1853 | v_msg->v_retval, event.msg_buf, | |
1001dc37 | 1854 | event.msg_len); |
75a64435 | 1855 | if (pending != 0) |
5eae00c5 | 1856 | memset(event.msg_buf, 0, I40EVF_MAX_AQ_BUF_SIZE); |
5eae00c5 GR |
1857 | } while (pending); |
1858 | ||
67c818a1 MW |
1859 | if ((adapter->flags & |
1860 | (I40EVF_FLAG_RESET_PENDING | I40EVF_FLAG_RESET_NEEDED)) || | |
1861 | adapter->state == __I40EVF_RESETTING) | |
1862 | goto freedom; | |
1863 | ||
912257e5 MW |
1864 | /* check for error indications */ |
1865 | val = rd32(hw, hw->aq.arq.len); | |
19b73d8e MW |
1866 | if (val == 0xdeadbeef) /* indicates device in reset */ |
1867 | goto freedom; | |
912257e5 | 1868 | oldval = val; |
b1f3366b | 1869 | if (val & I40E_VF_ARQLEN1_ARQVFE_MASK) { |
912257e5 | 1870 | dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n"); |
b1f3366b | 1871 | val &= ~I40E_VF_ARQLEN1_ARQVFE_MASK; |
912257e5 | 1872 | } |
b1f3366b | 1873 | if (val & I40E_VF_ARQLEN1_ARQOVFL_MASK) { |
912257e5 | 1874 | dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n"); |
b1f3366b | 1875 | val &= ~I40E_VF_ARQLEN1_ARQOVFL_MASK; |
912257e5 | 1876 | } |
b1f3366b | 1877 | if (val & I40E_VF_ARQLEN1_ARQCRIT_MASK) { |
912257e5 | 1878 | dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n"); |
b1f3366b | 1879 | val &= ~I40E_VF_ARQLEN1_ARQCRIT_MASK; |
912257e5 MW |
1880 | } |
1881 | if (oldval != val) | |
1882 | wr32(hw, hw->aq.arq.len, val); | |
1883 | ||
1884 | val = rd32(hw, hw->aq.asq.len); | |
1885 | oldval = val; | |
b1f3366b | 1886 | if (val & I40E_VF_ATQLEN1_ATQVFE_MASK) { |
912257e5 | 1887 | dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n"); |
b1f3366b | 1888 | val &= ~I40E_VF_ATQLEN1_ATQVFE_MASK; |
912257e5 | 1889 | } |
b1f3366b | 1890 | if (val & I40E_VF_ATQLEN1_ATQOVFL_MASK) { |
912257e5 | 1891 | dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n"); |
b1f3366b | 1892 | val &= ~I40E_VF_ATQLEN1_ATQOVFL_MASK; |
912257e5 | 1893 | } |
b1f3366b | 1894 | if (val & I40E_VF_ATQLEN1_ATQCRIT_MASK) { |
912257e5 | 1895 | dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n"); |
b1f3366b | 1896 | val &= ~I40E_VF_ATQLEN1_ATQCRIT_MASK; |
912257e5 MW |
1897 | } |
1898 | if (oldval != val) | |
1899 | wr32(hw, hw->aq.asq.len, val); | |
1900 | ||
67c818a1 | 1901 | freedom: |
7235448c MW |
1902 | kfree(event.msg_buf); |
1903 | out: | |
5eae00c5 GR |
1904 | /* re-enable Admin queue interrupt cause */ |
1905 | i40evf_misc_irq_enable(adapter); | |
5eae00c5 GR |
1906 | } |
1907 | ||
1908 | /** | |
1909 | * i40evf_free_all_tx_resources - Free Tx Resources for All Queues | |
1910 | * @adapter: board private structure | |
1911 | * | |
1912 | * Free all transmit software resources | |
1913 | **/ | |
e284fc88 | 1914 | void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter) |
5eae00c5 GR |
1915 | { |
1916 | int i; | |
1917 | ||
fdb47ae8 MW |
1918 | if (!adapter->tx_rings) |
1919 | return; | |
1920 | ||
cc052927 | 1921 | for (i = 0; i < adapter->num_active_queues; i++) |
0dd438d8 MW |
1922 | if (adapter->tx_rings[i].desc) |
1923 | i40evf_free_tx_resources(&adapter->tx_rings[i]); | |
5eae00c5 GR |
1924 | } |
1925 | ||
1926 | /** | |
1927 | * i40evf_setup_all_tx_resources - allocate all queues Tx resources | |
1928 | * @adapter: board private structure | |
1929 | * | |
1930 | * If this function returns with an error, then it's possible one or | |
1931 | * more of the rings is populated (while the rest are not). It is the | |
1932 | * callers duty to clean those orphaned rings. | |
1933 | * | |
1934 | * Return 0 on success, negative on failure | |
1935 | **/ | |
1936 | static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter) | |
1937 | { | |
1938 | int i, err = 0; | |
1939 | ||
cc052927 | 1940 | for (i = 0; i < adapter->num_active_queues; i++) { |
0dd438d8 MW |
1941 | adapter->tx_rings[i].count = adapter->tx_desc_count; |
1942 | err = i40evf_setup_tx_descriptors(&adapter->tx_rings[i]); | |
5eae00c5 GR |
1943 | if (!err) |
1944 | continue; | |
1945 | dev_err(&adapter->pdev->dev, | |
fb43201f | 1946 | "Allocation for Tx Queue %u failed\n", i); |
5eae00c5 GR |
1947 | break; |
1948 | } | |
1949 | ||
1950 | return err; | |
1951 | } | |
1952 | ||
1953 | /** | |
1954 | * i40evf_setup_all_rx_resources - allocate all queues Rx resources | |
1955 | * @adapter: board private structure | |
1956 | * | |
1957 | * If this function returns with an error, then it's possible one or | |
1958 | * more of the rings is populated (while the rest are not). It is the | |
1959 | * callers duty to clean those orphaned rings. | |
1960 | * | |
1961 | * Return 0 on success, negative on failure | |
1962 | **/ | |
1963 | static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter) | |
1964 | { | |
1965 | int i, err = 0; | |
1966 | ||
cc052927 | 1967 | for (i = 0; i < adapter->num_active_queues; i++) { |
0dd438d8 MW |
1968 | adapter->rx_rings[i].count = adapter->rx_desc_count; |
1969 | err = i40evf_setup_rx_descriptors(&adapter->rx_rings[i]); | |
5eae00c5 GR |
1970 | if (!err) |
1971 | continue; | |
1972 | dev_err(&adapter->pdev->dev, | |
fb43201f | 1973 | "Allocation for Rx Queue %u failed\n", i); |
5eae00c5 GR |
1974 | break; |
1975 | } | |
1976 | return err; | |
1977 | } | |
1978 | ||
1979 | /** | |
1980 | * i40evf_free_all_rx_resources - Free Rx Resources for All Queues | |
1981 | * @adapter: board private structure | |
1982 | * | |
1983 | * Free all receive software resources | |
1984 | **/ | |
e284fc88 | 1985 | void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter) |
5eae00c5 GR |
1986 | { |
1987 | int i; | |
1988 | ||
fdb47ae8 MW |
1989 | if (!adapter->rx_rings) |
1990 | return; | |
1991 | ||
cc052927 | 1992 | for (i = 0; i < adapter->num_active_queues; i++) |
0dd438d8 MW |
1993 | if (adapter->rx_rings[i].desc) |
1994 | i40evf_free_rx_resources(&adapter->rx_rings[i]); | |
5eae00c5 GR |
1995 | } |
1996 | ||
1997 | /** | |
1998 | * i40evf_open - Called when a network interface is made active | |
1999 | * @netdev: network interface device structure | |
2000 | * | |
2001 | * Returns 0 on success, negative value on failure | |
2002 | * | |
2003 | * The open entry point is called when a network interface is made | |
2004 | * active by the system (IFF_UP). At this point all resources needed | |
2005 | * for transmit and receive operations are allocated, the interrupt | |
2006 | * handler is registered with the OS, the watchdog timer is started, | |
2007 | * and the stack is notified that the interface is ready. | |
2008 | **/ | |
2009 | static int i40evf_open(struct net_device *netdev) | |
2010 | { | |
2011 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2012 | int err; | |
2013 | ||
ef8693eb MW |
2014 | if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) { |
2015 | dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n"); | |
2016 | return -EIO; | |
2017 | } | |
209dc4da MW |
2018 | |
2019 | if (adapter->state != __I40EVF_DOWN) | |
5eae00c5 GR |
2020 | return -EBUSY; |
2021 | ||
2022 | /* allocate transmit descriptors */ | |
2023 | err = i40evf_setup_all_tx_resources(adapter); | |
2024 | if (err) | |
2025 | goto err_setup_tx; | |
2026 | ||
2027 | /* allocate receive descriptors */ | |
2028 | err = i40evf_setup_all_rx_resources(adapter); | |
2029 | if (err) | |
2030 | goto err_setup_rx; | |
2031 | ||
2032 | /* clear any pending interrupts, may auto mask */ | |
2033 | err = i40evf_request_traffic_irqs(adapter, netdev->name); | |
2034 | if (err) | |
2035 | goto err_req_irq; | |
2036 | ||
44151cd3 | 2037 | i40evf_add_filter(adapter, adapter->hw.mac.addr); |
5eae00c5 GR |
2038 | i40evf_configure(adapter); |
2039 | ||
2040 | err = i40evf_up_complete(adapter); | |
2041 | if (err) | |
2042 | goto err_req_irq; | |
2043 | ||
2044 | i40evf_irq_enable(adapter, true); | |
2045 | ||
2046 | return 0; | |
2047 | ||
2048 | err_req_irq: | |
2049 | i40evf_down(adapter); | |
2050 | i40evf_free_traffic_irqs(adapter); | |
2051 | err_setup_rx: | |
2052 | i40evf_free_all_rx_resources(adapter); | |
2053 | err_setup_tx: | |
2054 | i40evf_free_all_tx_resources(adapter); | |
2055 | ||
2056 | return err; | |
2057 | } | |
2058 | ||
2059 | /** | |
2060 | * i40evf_close - Disables a network interface | |
2061 | * @netdev: network interface device structure | |
2062 | * | |
2063 | * Returns 0, this is not allowed to fail | |
2064 | * | |
2065 | * The close entry point is called when an interface is de-activated | |
2066 | * by the OS. The hardware is still under the drivers control, but | |
2067 | * needs to be disabled. All IRQs except vector 0 (reserved for admin queue) | |
2068 | * are freed, along with all transmit and receive resources. | |
2069 | **/ | |
2070 | static int i40evf_close(struct net_device *netdev) | |
2071 | { | |
2072 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2073 | ||
209dc4da | 2074 | if (adapter->state <= __I40EVF_DOWN_PENDING) |
ef8693eb MW |
2075 | return 0; |
2076 | ||
ef8693eb | 2077 | |
5eae00c5 GR |
2078 | set_bit(__I40E_DOWN, &adapter->vsi.state); |
2079 | ||
2080 | i40evf_down(adapter); | |
209dc4da | 2081 | adapter->state = __I40EVF_DOWN_PENDING; |
5eae00c5 GR |
2082 | i40evf_free_traffic_irqs(adapter); |
2083 | ||
5eae00c5 GR |
2084 | return 0; |
2085 | } | |
2086 | ||
2087 | /** | |
2088 | * i40evf_get_stats - Get System Network Statistics | |
2089 | * @netdev: network interface device structure | |
2090 | * | |
2091 | * Returns the address of the device statistics structure. | |
2092 | * The statistics are actually updated from the timer callback. | |
2093 | **/ | |
2094 | static struct net_device_stats *i40evf_get_stats(struct net_device *netdev) | |
2095 | { | |
2096 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2097 | ||
2098 | /* only return the current stats */ | |
2099 | return &adapter->net_stats; | |
2100 | } | |
2101 | ||
5eae00c5 GR |
2102 | /** |
2103 | * i40evf_change_mtu - Change the Maximum Transfer Unit | |
2104 | * @netdev: network interface device structure | |
2105 | * @new_mtu: new value for maximum frame size | |
2106 | * | |
2107 | * Returns 0 on success, negative on failure | |
2108 | **/ | |
2109 | static int i40evf_change_mtu(struct net_device *netdev, int new_mtu) | |
2110 | { | |
2111 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2112 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
2113 | ||
2114 | if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER)) | |
2115 | return -EINVAL; | |
2116 | ||
5eae00c5 | 2117 | netdev->mtu = new_mtu; |
67c818a1 MW |
2118 | adapter->flags |= I40EVF_FLAG_RESET_NEEDED; |
2119 | schedule_work(&adapter->reset_task); | |
2120 | ||
5eae00c5 GR |
2121 | return 0; |
2122 | } | |
2123 | ||
c4445aed MW |
2124 | #define I40EVF_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_TX |\ |
2125 | NETIF_F_HW_VLAN_CTAG_RX |\ | |
2126 | NETIF_F_HW_VLAN_CTAG_FILTER) | |
2127 | ||
2128 | /** | |
2129 | * i40evf_fix_features - fix up the netdev feature bits | |
2130 | * @netdev: our net device | |
2131 | * @features: desired feature bits | |
2132 | * | |
2133 | * Returns fixed-up features bits | |
2134 | **/ | |
2135 | static netdev_features_t i40evf_fix_features(struct net_device *netdev, | |
2136 | netdev_features_t features) | |
2137 | { | |
2138 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2139 | ||
2140 | features &= ~I40EVF_VLAN_FEATURES; | |
2141 | if (adapter->vf_res->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_VLAN) | |
2142 | features |= I40EVF_VLAN_FEATURES; | |
2143 | return features; | |
2144 | } | |
2145 | ||
5eae00c5 GR |
2146 | static const struct net_device_ops i40evf_netdev_ops = { |
2147 | .ndo_open = i40evf_open, | |
2148 | .ndo_stop = i40evf_close, | |
2149 | .ndo_start_xmit = i40evf_xmit_frame, | |
2150 | .ndo_get_stats = i40evf_get_stats, | |
2151 | .ndo_set_rx_mode = i40evf_set_rx_mode, | |
2152 | .ndo_validate_addr = eth_validate_addr, | |
2153 | .ndo_set_mac_address = i40evf_set_mac, | |
2154 | .ndo_change_mtu = i40evf_change_mtu, | |
2155 | .ndo_tx_timeout = i40evf_tx_timeout, | |
2156 | .ndo_vlan_rx_add_vid = i40evf_vlan_rx_add_vid, | |
2157 | .ndo_vlan_rx_kill_vid = i40evf_vlan_rx_kill_vid, | |
c4445aed | 2158 | .ndo_fix_features = i40evf_fix_features, |
7709b4c1 AD |
2159 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2160 | .ndo_poll_controller = i40evf_netpoll, | |
2161 | #endif | |
5eae00c5 GR |
2162 | }; |
2163 | ||
2164 | /** | |
2165 | * i40evf_check_reset_complete - check that VF reset is complete | |
2166 | * @hw: pointer to hw struct | |
2167 | * | |
2168 | * Returns 0 if device is ready to use, or -EBUSY if it's in reset. | |
2169 | **/ | |
2170 | static int i40evf_check_reset_complete(struct i40e_hw *hw) | |
2171 | { | |
2172 | u32 rstat; | |
2173 | int i; | |
2174 | ||
2175 | for (i = 0; i < 100; i++) { | |
fd35886a AS |
2176 | rstat = rd32(hw, I40E_VFGEN_RSTAT) & |
2177 | I40E_VFGEN_RSTAT_VFR_STATE_MASK; | |
2178 | if ((rstat == I40E_VFR_VFACTIVE) || | |
2179 | (rstat == I40E_VFR_COMPLETED)) | |
5eae00c5 | 2180 | return 0; |
f98a2006 | 2181 | usleep_range(10, 20); |
5eae00c5 GR |
2182 | } |
2183 | return -EBUSY; | |
2184 | } | |
2185 | ||
e6d038de MW |
2186 | /** |
2187 | * i40evf_process_config - Process the config information we got from the PF | |
2188 | * @adapter: board private structure | |
2189 | * | |
2190 | * Verify that we have a valid config struct, and set up our netdev features | |
2191 | * and our VSI struct. | |
2192 | **/ | |
2193 | int i40evf_process_config(struct i40evf_adapter *adapter) | |
2194 | { | |
ba6cc7f6 | 2195 | struct i40e_virtchnl_vf_resource *vfres = adapter->vf_res; |
e6d038de | 2196 | struct net_device *netdev = adapter->netdev; |
43a3d9ba | 2197 | struct i40e_vsi *vsi = &adapter->vsi; |
e6d038de MW |
2198 | int i; |
2199 | ||
2200 | /* got VF config message back from PF, now we can parse it */ | |
ba6cc7f6 MW |
2201 | for (i = 0; i < vfres->num_vsis; i++) { |
2202 | if (vfres->vsi_res[i].vsi_type == I40E_VSI_SRIOV) | |
2203 | adapter->vsi_res = &vfres->vsi_res[i]; | |
e6d038de MW |
2204 | } |
2205 | if (!adapter->vsi_res) { | |
2206 | dev_err(&adapter->pdev->dev, "No LAN VSI found\n"); | |
2207 | return -ENODEV; | |
2208 | } | |
2209 | ||
b0fe3306 AD |
2210 | netdev->hw_enc_features |= NETIF_F_SG | |
2211 | NETIF_F_IP_CSUM | | |
2212 | NETIF_F_IPV6_CSUM | | |
2213 | NETIF_F_HIGHDMA | | |
2214 | NETIF_F_SOFT_FEATURES | | |
2215 | NETIF_F_TSO | | |
2216 | NETIF_F_TSO_ECN | | |
2217 | NETIF_F_TSO6 | | |
2218 | NETIF_F_GSO_GRE | | |
1c7b4a23 | 2219 | NETIF_F_GSO_GRE_CSUM | |
577389a5 AD |
2220 | NETIF_F_GSO_IPIP | |
2221 | NETIF_F_GSO_SIT | | |
b0fe3306 AD |
2222 | NETIF_F_GSO_UDP_TUNNEL | |
2223 | NETIF_F_GSO_UDP_TUNNEL_CSUM | | |
1c7b4a23 | 2224 | NETIF_F_GSO_PARTIAL | |
b0fe3306 AD |
2225 | NETIF_F_SCTP_CRC | |
2226 | NETIF_F_RXHASH | | |
2227 | NETIF_F_RXCSUM | | |
2228 | 0; | |
2229 | ||
2230 | if (!(adapter->flags & I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE)) | |
1c7b4a23 AD |
2231 | netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM; |
2232 | ||
2233 | netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM; | |
b0fe3306 AD |
2234 | |
2235 | /* record features VLANs can make use of */ | |
1c7b4a23 AD |
2236 | netdev->vlan_features |= netdev->hw_enc_features | |
2237 | NETIF_F_TSO_MANGLEID; | |
b0fe3306 AD |
2238 | |
2239 | /* Write features and hw_features separately to avoid polluting | |
2240 | * with, or dropping, features that are set when we registgered. | |
2241 | */ | |
2242 | netdev->hw_features |= netdev->hw_enc_features; | |
2243 | ||
2244 | netdev->features |= netdev->hw_enc_features | I40EVF_VLAN_FEATURES; | |
1c7b4a23 | 2245 | netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID; |
b0fe3306 AD |
2246 | |
2247 | /* disable VLAN features if not supported */ | |
2248 | if (!(vfres->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_VLAN)) | |
2249 | netdev->features ^= I40EVF_VLAN_FEATURES; | |
e6d038de MW |
2250 | |
2251 | adapter->vsi.id = adapter->vsi_res->vsi_id; | |
2252 | ||
2253 | adapter->vsi.back = adapter; | |
2254 | adapter->vsi.base_vector = 1; | |
2255 | adapter->vsi.work_limit = I40E_DEFAULT_IRQ_WORK; | |
2256 | adapter->vsi.rx_itr_setting = (I40E_ITR_DYNAMIC | | |
2257 | ITR_REG_TO_USEC(I40E_ITR_RX_DEF)); | |
2258 | adapter->vsi.tx_itr_setting = (I40E_ITR_DYNAMIC | | |
2259 | ITR_REG_TO_USEC(I40E_ITR_TX_DEF)); | |
43a3d9ba MW |
2260 | vsi->netdev = adapter->netdev; |
2261 | vsi->qs_handle = adapter->vsi_res->qset_handle; | |
2262 | if (vfres->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_RSS_PF) { | |
2263 | adapter->rss_key_size = vfres->rss_key_size; | |
2264 | adapter->rss_lut_size = vfres->rss_lut_size; | |
2265 | } else { | |
2266 | adapter->rss_key_size = I40EVF_HKEY_ARRAY_SIZE; | |
2267 | adapter->rss_lut_size = I40EVF_HLUT_ARRAY_SIZE; | |
2268 | } | |
2269 | ||
e6d038de MW |
2270 | return 0; |
2271 | } | |
2272 | ||
5eae00c5 GR |
2273 | /** |
2274 | * i40evf_init_task - worker thread to perform delayed initialization | |
2275 | * @work: pointer to work_struct containing our data | |
2276 | * | |
2277 | * This task completes the work that was begun in probe. Due to the nature | |
2278 | * of VF-PF communications, we may need to wait tens of milliseconds to get | |
dbedd44e | 2279 | * responses back from the PF. Rather than busy-wait in probe and bog down the |
5eae00c5 GR |
2280 | * whole system, we'll do it in a task so we can sleep. |
2281 | * This task only runs during driver init. Once we've established | |
2282 | * communications with the PF driver and set up our netdev, the watchdog | |
2283 | * takes over. | |
2284 | **/ | |
2285 | static void i40evf_init_task(struct work_struct *work) | |
2286 | { | |
2287 | struct i40evf_adapter *adapter = container_of(work, | |
2288 | struct i40evf_adapter, | |
2289 | init_task.work); | |
2290 | struct net_device *netdev = adapter->netdev; | |
5eae00c5 GR |
2291 | struct i40e_hw *hw = &adapter->hw; |
2292 | struct pci_dev *pdev = adapter->pdev; | |
e6d038de | 2293 | int err, bufsz; |
5eae00c5 GR |
2294 | |
2295 | switch (adapter->state) { | |
2296 | case __I40EVF_STARTUP: | |
2297 | /* driver loaded, probe complete */ | |
ef8693eb MW |
2298 | adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED; |
2299 | adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; | |
5eae00c5 GR |
2300 | err = i40e_set_mac_type(hw); |
2301 | if (err) { | |
c2a137cb MW |
2302 | dev_err(&pdev->dev, "Failed to set MAC type (%d)\n", |
2303 | err); | |
2619ef47 | 2304 | goto err; |
5eae00c5 GR |
2305 | } |
2306 | err = i40evf_check_reset_complete(hw); | |
2307 | if (err) { | |
0d9c7ea8 | 2308 | dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n", |
75a64435 | 2309 | err); |
5eae00c5 GR |
2310 | goto err; |
2311 | } | |
2312 | hw->aq.num_arq_entries = I40EVF_AQ_LEN; | |
2313 | hw->aq.num_asq_entries = I40EVF_AQ_LEN; | |
2314 | hw->aq.arq_buf_size = I40EVF_MAX_AQ_BUF_SIZE; | |
2315 | hw->aq.asq_buf_size = I40EVF_MAX_AQ_BUF_SIZE; | |
2316 | ||
2317 | err = i40evf_init_adminq(hw); | |
2318 | if (err) { | |
c2a137cb MW |
2319 | dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n", |
2320 | err); | |
5eae00c5 GR |
2321 | goto err; |
2322 | } | |
2323 | err = i40evf_send_api_ver(adapter); | |
2324 | if (err) { | |
10bdd67b | 2325 | dev_err(&pdev->dev, "Unable to send to PF (%d)\n", err); |
5eae00c5 GR |
2326 | i40evf_shutdown_adminq(hw); |
2327 | goto err; | |
2328 | } | |
2329 | adapter->state = __I40EVF_INIT_VERSION_CHECK; | |
2330 | goto restart; | |
5eae00c5 | 2331 | case __I40EVF_INIT_VERSION_CHECK: |
10bdd67b | 2332 | if (!i40evf_asq_done(hw)) { |
80e72893 | 2333 | dev_err(&pdev->dev, "Admin queue command never completed\n"); |
906a6937 MW |
2334 | i40evf_shutdown_adminq(hw); |
2335 | adapter->state = __I40EVF_STARTUP; | |
5eae00c5 | 2336 | goto err; |
10bdd67b | 2337 | } |
5eae00c5 GR |
2338 | |
2339 | /* aq msg sent, awaiting reply */ | |
2340 | err = i40evf_verify_api_ver(adapter); | |
2341 | if (err) { | |
d4f82fd3 | 2342 | if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK) |
56f9920a | 2343 | err = i40evf_send_api_ver(adapter); |
ee1693e5 MW |
2344 | else |
2345 | dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n", | |
2346 | adapter->pf_version.major, | |
2347 | adapter->pf_version.minor, | |
2348 | I40E_VIRTCHNL_VERSION_MAJOR, | |
2349 | I40E_VIRTCHNL_VERSION_MINOR); | |
5eae00c5 GR |
2350 | goto err; |
2351 | } | |
2352 | err = i40evf_send_vf_config_msg(adapter); | |
2353 | if (err) { | |
3f2ab172 | 2354 | dev_err(&pdev->dev, "Unable to send config request (%d)\n", |
5eae00c5 GR |
2355 | err); |
2356 | goto err; | |
2357 | } | |
2358 | adapter->state = __I40EVF_INIT_GET_RESOURCES; | |
2359 | goto restart; | |
5eae00c5 GR |
2360 | case __I40EVF_INIT_GET_RESOURCES: |
2361 | /* aq msg sent, awaiting reply */ | |
2362 | if (!adapter->vf_res) { | |
2363 | bufsz = sizeof(struct i40e_virtchnl_vf_resource) + | |
2364 | (I40E_MAX_VF_VSI * | |
2365 | sizeof(struct i40e_virtchnl_vsi_resource)); | |
2366 | adapter->vf_res = kzalloc(bufsz, GFP_KERNEL); | |
c2a137cb | 2367 | if (!adapter->vf_res) |
5eae00c5 | 2368 | goto err; |
5eae00c5 GR |
2369 | } |
2370 | err = i40evf_get_vf_config(adapter); | |
906a6937 | 2371 | if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK) { |
906a6937 MW |
2372 | err = i40evf_send_vf_config_msg(adapter); |
2373 | goto err; | |
e743072f MW |
2374 | } else if (err == I40E_ERR_PARAM) { |
2375 | /* We only get ERR_PARAM if the device is in a very bad | |
2376 | * state or if we've been disabled for previous bad | |
2377 | * behavior. Either way, we're done now. | |
2378 | */ | |
2379 | i40evf_shutdown_adminq(hw); | |
2380 | dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n"); | |
2381 | return; | |
906a6937 | 2382 | } |
5eae00c5 | 2383 | if (err) { |
c2a137cb MW |
2384 | dev_err(&pdev->dev, "Unable to get VF config (%d)\n", |
2385 | err); | |
5eae00c5 GR |
2386 | goto err_alloc; |
2387 | } | |
2388 | adapter->state = __I40EVF_INIT_SW; | |
2389 | break; | |
2390 | default: | |
2391 | goto err_alloc; | |
2392 | } | |
f608e6a6 AD |
2393 | |
2394 | if (hw->mac.type == I40E_MAC_X722_VF) | |
2395 | adapter->flags |= I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE; | |
2396 | ||
e6d038de | 2397 | if (i40evf_process_config(adapter)) |
5eae00c5 | 2398 | goto err_alloc; |
e6d038de | 2399 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; |
5eae00c5 GR |
2400 | |
2401 | adapter->flags |= I40EVF_FLAG_RX_CSUM_ENABLED; | |
2402 | ||
5eae00c5 GR |
2403 | netdev->netdev_ops = &i40evf_netdev_ops; |
2404 | i40evf_set_ethtool_ops(netdev); | |
2405 | netdev->watchdog_timeo = 5 * HZ; | |
3415e8ce | 2406 | |
5eae00c5 | 2407 | if (!is_valid_ether_addr(adapter->hw.mac.addr)) { |
b34f90e7 | 2408 | dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n", |
c2a137cb | 2409 | adapter->hw.mac.addr); |
14e52ee2 MW |
2410 | eth_hw_addr_random(netdev); |
2411 | ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr); | |
2412 | } else { | |
2413 | adapter->flags |= I40EVF_FLAG_ADDR_SET_BY_PF; | |
2414 | ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr); | |
2415 | ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr); | |
5eae00c5 | 2416 | } |
5eae00c5 | 2417 | |
5eae00c5 GR |
2418 | init_timer(&adapter->watchdog_timer); |
2419 | adapter->watchdog_timer.function = &i40evf_watchdog_timer; | |
2420 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
2421 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
2422 | ||
cc052927 MW |
2423 | adapter->num_active_queues = min_t(int, |
2424 | adapter->vsi_res->num_queue_pairs, | |
2425 | (int)(num_online_cpus())); | |
d732a184 MW |
2426 | adapter->tx_desc_count = I40EVF_DEFAULT_TXD; |
2427 | adapter->rx_desc_count = I40EVF_DEFAULT_RXD; | |
5eae00c5 GR |
2428 | err = i40evf_init_interrupt_scheme(adapter); |
2429 | if (err) | |
2430 | goto err_sw_init; | |
2431 | i40evf_map_rings_to_vectors(adapter); | |
f6d83d13 ASJ |
2432 | if (adapter->vf_res->vf_offload_flags & |
2433 | I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) | |
2434 | adapter->flags |= I40EVF_FLAG_WB_ON_ITR_CAPABLE; | |
2435 | ||
5eae00c5 GR |
2436 | err = i40evf_request_misc_irq(adapter); |
2437 | if (err) | |
2438 | goto err_sw_init; | |
2439 | ||
2440 | netif_carrier_off(netdev); | |
2441 | ||
ef8693eb MW |
2442 | if (!adapter->netdev_registered) { |
2443 | err = register_netdev(netdev); | |
2444 | if (err) | |
2445 | goto err_register; | |
2446 | } | |
5eae00c5 GR |
2447 | |
2448 | adapter->netdev_registered = true; | |
2449 | ||
2450 | netif_tx_stop_all_queues(netdev); | |
2451 | ||
b34f90e7 | 2452 | dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr); |
5eae00c5 GR |
2453 | if (netdev->features & NETIF_F_GRO) |
2454 | dev_info(&pdev->dev, "GRO is enabled\n"); | |
2455 | ||
5eae00c5 GR |
2456 | adapter->state = __I40EVF_DOWN; |
2457 | set_bit(__I40E_DOWN, &adapter->vsi.state); | |
2458 | i40evf_misc_irq_enable(adapter); | |
e25d00b8 | 2459 | |
43a3d9ba MW |
2460 | adapter->rss_key = kzalloc(adapter->rss_key_size, GFP_KERNEL); |
2461 | adapter->rss_lut = kzalloc(adapter->rss_lut_size, GFP_KERNEL); | |
2462 | if (!adapter->rss_key || !adapter->rss_lut) | |
2463 | goto err_mem; | |
2464 | ||
e25d00b8 ASJ |
2465 | if (RSS_AQ(adapter)) { |
2466 | adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_RSS; | |
2467 | mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); | |
2468 | } else { | |
96a81986 | 2469 | i40evf_init_rss(adapter); |
e25d00b8 | 2470 | } |
5eae00c5 GR |
2471 | return; |
2472 | restart: | |
3f7e5c33 | 2473 | schedule_delayed_work(&adapter->init_task, msecs_to_jiffies(30)); |
5eae00c5 | 2474 | return; |
43a3d9ba MW |
2475 | err_mem: |
2476 | i40evf_free_rss(adapter); | |
5eae00c5 GR |
2477 | err_register: |
2478 | i40evf_free_misc_irq(adapter); | |
2479 | err_sw_init: | |
2480 | i40evf_reset_interrupt_capability(adapter); | |
5eae00c5 GR |
2481 | err_alloc: |
2482 | kfree(adapter->vf_res); | |
2483 | adapter->vf_res = NULL; | |
2484 | err: | |
2485 | /* Things went into the weeds, so try again later */ | |
2486 | if (++adapter->aq_wait_count > I40EVF_AQ_MAX_ERR) { | |
b9029e94 | 2487 | dev_err(&pdev->dev, "Failed to communicate with PF; waiting before retry\n"); |
ef8693eb | 2488 | adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED; |
b9029e94 MW |
2489 | i40evf_shutdown_adminq(hw); |
2490 | adapter->state = __I40EVF_STARTUP; | |
2491 | schedule_delayed_work(&adapter->init_task, HZ * 5); | |
2492 | return; | |
5eae00c5 | 2493 | } |
3f7e5c33 | 2494 | schedule_delayed_work(&adapter->init_task, HZ); |
5eae00c5 GR |
2495 | } |
2496 | ||
2497 | /** | |
2498 | * i40evf_shutdown - Shutdown the device in preparation for a reboot | |
2499 | * @pdev: pci device structure | |
2500 | **/ | |
2501 | static void i40evf_shutdown(struct pci_dev *pdev) | |
2502 | { | |
2503 | struct net_device *netdev = pci_get_drvdata(pdev); | |
00293fdc | 2504 | struct i40evf_adapter *adapter = netdev_priv(netdev); |
5eae00c5 GR |
2505 | |
2506 | netif_device_detach(netdev); | |
2507 | ||
2508 | if (netif_running(netdev)) | |
2509 | i40evf_close(netdev); | |
2510 | ||
00293fdc MW |
2511 | /* Prevent the watchdog from running. */ |
2512 | adapter->state = __I40EVF_REMOVE; | |
2513 | adapter->aq_required = 0; | |
00293fdc | 2514 | |
5eae00c5 GR |
2515 | #ifdef CONFIG_PM |
2516 | pci_save_state(pdev); | |
2517 | ||
2518 | #endif | |
2519 | pci_disable_device(pdev); | |
2520 | } | |
2521 | ||
2522 | /** | |
2523 | * i40evf_probe - Device Initialization Routine | |
2524 | * @pdev: PCI device information struct | |
2525 | * @ent: entry in i40evf_pci_tbl | |
2526 | * | |
2527 | * Returns 0 on success, negative on failure | |
2528 | * | |
2529 | * i40evf_probe initializes an adapter identified by a pci_dev structure. | |
2530 | * The OS initialization, configuring of the adapter private structure, | |
2531 | * and a hardware reset occur. | |
2532 | **/ | |
2533 | static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
2534 | { | |
2535 | struct net_device *netdev; | |
2536 | struct i40evf_adapter *adapter = NULL; | |
2537 | struct i40e_hw *hw = NULL; | |
dbbd8111 | 2538 | int err; |
5eae00c5 GR |
2539 | |
2540 | err = pci_enable_device(pdev); | |
2541 | if (err) | |
2542 | return err; | |
2543 | ||
6494294f | 2544 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
6494294f | 2545 | if (err) { |
e3e3bfdd JS |
2546 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
2547 | if (err) { | |
2548 | dev_err(&pdev->dev, | |
2549 | "DMA configuration failed: 0x%x\n", err); | |
2550 | goto err_dma; | |
2551 | } | |
5eae00c5 GR |
2552 | } |
2553 | ||
2554 | err = pci_request_regions(pdev, i40evf_driver_name); | |
2555 | if (err) { | |
2556 | dev_err(&pdev->dev, | |
2557 | "pci_request_regions failed 0x%x\n", err); | |
2558 | goto err_pci_reg; | |
2559 | } | |
2560 | ||
2561 | pci_enable_pcie_error_reporting(pdev); | |
2562 | ||
2563 | pci_set_master(pdev); | |
2564 | ||
1255b7a1 | 2565 | netdev = alloc_etherdev_mq(sizeof(struct i40evf_adapter), MAX_QUEUES); |
5eae00c5 GR |
2566 | if (!netdev) { |
2567 | err = -ENOMEM; | |
2568 | goto err_alloc_etherdev; | |
2569 | } | |
2570 | ||
2571 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2572 | ||
2573 | pci_set_drvdata(pdev, netdev); | |
2574 | adapter = netdev_priv(netdev); | |
5eae00c5 GR |
2575 | |
2576 | adapter->netdev = netdev; | |
2577 | adapter->pdev = pdev; | |
2578 | ||
2579 | hw = &adapter->hw; | |
2580 | hw->back = adapter; | |
2581 | ||
41a1d04b | 2582 | adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1; |
5eae00c5 GR |
2583 | adapter->state = __I40EVF_STARTUP; |
2584 | ||
2585 | /* Call save state here because it relies on the adapter struct. */ | |
2586 | pci_save_state(pdev); | |
2587 | ||
2588 | hw->hw_addr = ioremap(pci_resource_start(pdev, 0), | |
2589 | pci_resource_len(pdev, 0)); | |
2590 | if (!hw->hw_addr) { | |
2591 | err = -EIO; | |
2592 | goto err_ioremap; | |
2593 | } | |
2594 | hw->vendor_id = pdev->vendor; | |
2595 | hw->device_id = pdev->device; | |
2596 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
2597 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2598 | hw->subsystem_device_id = pdev->subsystem_device; | |
2599 | hw->bus.device = PCI_SLOT(pdev->devfn); | |
2600 | hw->bus.func = PCI_FUNC(pdev->devfn); | |
2601 | ||
8ddb3326 JB |
2602 | /* set up the locks for the AQ, do this only once in probe |
2603 | * and destroy them only once in remove | |
2604 | */ | |
2605 | mutex_init(&hw->aq.asq_mutex); | |
2606 | mutex_init(&hw->aq.arq_mutex); | |
2607 | ||
8bb1a540 SK |
2608 | INIT_LIST_HEAD(&adapter->mac_filter_list); |
2609 | INIT_LIST_HEAD(&adapter->vlan_filter_list); | |
2610 | ||
5eae00c5 GR |
2611 | INIT_WORK(&adapter->reset_task, i40evf_reset_task); |
2612 | INIT_WORK(&adapter->adminq_task, i40evf_adminq_task); | |
2613 | INIT_WORK(&adapter->watchdog_task, i40evf_watchdog_task); | |
2614 | INIT_DELAYED_WORK(&adapter->init_task, i40evf_init_task); | |
9b32b0b5 MW |
2615 | schedule_delayed_work(&adapter->init_task, |
2616 | msecs_to_jiffies(5 * (pdev->devfn & 0x07))); | |
5eae00c5 GR |
2617 | |
2618 | return 0; | |
2619 | ||
2620 | err_ioremap: | |
2621 | free_netdev(netdev); | |
2622 | err_alloc_etherdev: | |
2623 | pci_release_regions(pdev); | |
2624 | err_pci_reg: | |
2625 | err_dma: | |
2626 | pci_disable_device(pdev); | |
2627 | return err; | |
2628 | } | |
2629 | ||
2630 | #ifdef CONFIG_PM | |
2631 | /** | |
2632 | * i40evf_suspend - Power management suspend routine | |
2633 | * @pdev: PCI device information struct | |
2634 | * @state: unused | |
2635 | * | |
2636 | * Called when the system (VM) is entering sleep/suspend. | |
2637 | **/ | |
2638 | static int i40evf_suspend(struct pci_dev *pdev, pm_message_t state) | |
2639 | { | |
2640 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2641 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2642 | int retval = 0; | |
2643 | ||
2644 | netif_device_detach(netdev); | |
2645 | ||
2646 | if (netif_running(netdev)) { | |
2647 | rtnl_lock(); | |
2648 | i40evf_down(adapter); | |
2649 | rtnl_unlock(); | |
2650 | } | |
2651 | i40evf_free_misc_irq(adapter); | |
2652 | i40evf_reset_interrupt_capability(adapter); | |
2653 | ||
2654 | retval = pci_save_state(pdev); | |
2655 | if (retval) | |
2656 | return retval; | |
2657 | ||
2658 | pci_disable_device(pdev); | |
2659 | ||
2660 | return 0; | |
2661 | } | |
2662 | ||
2663 | /** | |
dbedd44e | 2664 | * i40evf_resume - Power management resume routine |
5eae00c5 GR |
2665 | * @pdev: PCI device information struct |
2666 | * | |
2667 | * Called when the system (VM) is resumed from sleep/suspend. | |
2668 | **/ | |
2669 | static int i40evf_resume(struct pci_dev *pdev) | |
2670 | { | |
2671 | struct i40evf_adapter *adapter = pci_get_drvdata(pdev); | |
2672 | struct net_device *netdev = adapter->netdev; | |
2673 | u32 err; | |
2674 | ||
2675 | pci_set_power_state(pdev, PCI_D0); | |
2676 | pci_restore_state(pdev); | |
2677 | /* pci_restore_state clears dev->state_saved so call | |
2678 | * pci_save_state to restore it. | |
2679 | */ | |
2680 | pci_save_state(pdev); | |
2681 | ||
2682 | err = pci_enable_device_mem(pdev); | |
2683 | if (err) { | |
2684 | dev_err(&pdev->dev, "Cannot enable PCI device from suspend.\n"); | |
2685 | return err; | |
2686 | } | |
2687 | pci_set_master(pdev); | |
2688 | ||
2689 | rtnl_lock(); | |
2690 | err = i40evf_set_interrupt_capability(adapter); | |
2691 | if (err) { | |
f2a1c368 | 2692 | rtnl_unlock(); |
5eae00c5 GR |
2693 | dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n"); |
2694 | return err; | |
2695 | } | |
2696 | err = i40evf_request_misc_irq(adapter); | |
2697 | rtnl_unlock(); | |
2698 | if (err) { | |
2699 | dev_err(&pdev->dev, "Cannot get interrupt vector.\n"); | |
2700 | return err; | |
2701 | } | |
2702 | ||
2703 | schedule_work(&adapter->reset_task); | |
2704 | ||
2705 | netif_device_attach(netdev); | |
2706 | ||
2707 | return err; | |
2708 | } | |
2709 | ||
2710 | #endif /* CONFIG_PM */ | |
2711 | /** | |
2712 | * i40evf_remove - Device Removal Routine | |
2713 | * @pdev: PCI device information struct | |
2714 | * | |
2715 | * i40evf_remove is called by the PCI subsystem to alert the driver | |
2716 | * that it should release a PCI device. The could be caused by a | |
2717 | * Hot-Plug event, or because the driver is going to be removed from | |
2718 | * memory. | |
2719 | **/ | |
2720 | static void i40evf_remove(struct pci_dev *pdev) | |
2721 | { | |
2722 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2723 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
6ba36a24 | 2724 | struct i40evf_mac_filter *f, *ftmp; |
5eae00c5 GR |
2725 | struct i40e_hw *hw = &adapter->hw; |
2726 | ||
2727 | cancel_delayed_work_sync(&adapter->init_task); | |
ef8693eb | 2728 | cancel_work_sync(&adapter->reset_task); |
5eae00c5 GR |
2729 | |
2730 | if (adapter->netdev_registered) { | |
2731 | unregister_netdev(netdev); | |
2732 | adapter->netdev_registered = false; | |
2733 | } | |
53d0b3ae | 2734 | |
f4a71881 | 2735 | /* Shut down all the garbage mashers on the detention level */ |
5eae00c5 | 2736 | adapter->state = __I40EVF_REMOVE; |
f4a71881 | 2737 | adapter->aq_required = 0; |
f4a71881 | 2738 | i40evf_request_reset(adapter); |
22ead37f | 2739 | msleep(50); |
f4a71881 MW |
2740 | /* If the FW isn't responding, kick it once, but only once. */ |
2741 | if (!i40evf_asq_done(hw)) { | |
2742 | i40evf_request_reset(adapter); | |
22ead37f | 2743 | msleep(50); |
f4a71881 | 2744 | } |
5eae00c5 | 2745 | |
dbb01c8a | 2746 | if (adapter->msix_entries) { |
5eae00c5 | 2747 | i40evf_misc_irq_disable(adapter); |
5eae00c5 | 2748 | i40evf_free_misc_irq(adapter); |
5eae00c5 | 2749 | i40evf_reset_interrupt_capability(adapter); |
d31944d6 | 2750 | i40evf_free_q_vectors(adapter); |
5eae00c5 GR |
2751 | } |
2752 | ||
e5d17c3e MW |
2753 | if (adapter->watchdog_timer.function) |
2754 | del_timer_sync(&adapter->watchdog_timer); | |
2755 | ||
dbb01c8a MW |
2756 | flush_scheduled_work(); |
2757 | ||
43a3d9ba | 2758 | i40evf_free_rss(adapter); |
66f9af85 | 2759 | |
5eae00c5 GR |
2760 | if (hw->aq.asq.count) |
2761 | i40evf_shutdown_adminq(hw); | |
2762 | ||
8ddb3326 JB |
2763 | /* destroy the locks only once, here */ |
2764 | mutex_destroy(&hw->aq.arq_mutex); | |
2765 | mutex_destroy(&hw->aq.asq_mutex); | |
2766 | ||
5eae00c5 GR |
2767 | iounmap(hw->hw_addr); |
2768 | pci_release_regions(pdev); | |
e284fc88 MW |
2769 | i40evf_free_all_tx_resources(adapter); |
2770 | i40evf_free_all_rx_resources(adapter); | |
5eae00c5 GR |
2771 | i40evf_free_queues(adapter); |
2772 | kfree(adapter->vf_res); | |
6ba36a24 MW |
2773 | /* If we got removed before an up/down sequence, we've got a filter |
2774 | * hanging out there that we need to get rid of. | |
2775 | */ | |
2776 | list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { | |
2777 | list_del(&f->list); | |
2778 | kfree(f); | |
2779 | } | |
37dfdf37 MW |
2780 | list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) { |
2781 | list_del(&f->list); | |
2782 | kfree(f); | |
2783 | } | |
5eae00c5 GR |
2784 | |
2785 | free_netdev(netdev); | |
2786 | ||
2787 | pci_disable_pcie_error_reporting(pdev); | |
2788 | ||
2789 | pci_disable_device(pdev); | |
2790 | } | |
2791 | ||
2792 | static struct pci_driver i40evf_driver = { | |
2793 | .name = i40evf_driver_name, | |
2794 | .id_table = i40evf_pci_tbl, | |
2795 | .probe = i40evf_probe, | |
2796 | .remove = i40evf_remove, | |
2797 | #ifdef CONFIG_PM | |
2798 | .suspend = i40evf_suspend, | |
2799 | .resume = i40evf_resume, | |
2800 | #endif | |
2801 | .shutdown = i40evf_shutdown, | |
2802 | }; | |
2803 | ||
2804 | /** | |
2805 | * i40e_init_module - Driver Registration Routine | |
2806 | * | |
2807 | * i40e_init_module is the first routine called when the driver is | |
2808 | * loaded. All it does is register with the PCI subsystem. | |
2809 | **/ | |
2810 | static int __init i40evf_init_module(void) | |
2811 | { | |
2812 | int ret; | |
75a64435 | 2813 | |
5eae00c5 | 2814 | pr_info("i40evf: %s - version %s\n", i40evf_driver_string, |
75a64435 | 2815 | i40evf_driver_version); |
5eae00c5 GR |
2816 | |
2817 | pr_info("%s\n", i40evf_copyright); | |
2818 | ||
2803b16c JB |
2819 | i40evf_wq = create_singlethread_workqueue(i40evf_driver_name); |
2820 | if (!i40evf_wq) { | |
2821 | pr_err("%s: Failed to create workqueue\n", i40evf_driver_name); | |
2822 | return -ENOMEM; | |
2823 | } | |
5eae00c5 GR |
2824 | ret = pci_register_driver(&i40evf_driver); |
2825 | return ret; | |
2826 | } | |
2827 | ||
2828 | module_init(i40evf_init_module); | |
2829 | ||
2830 | /** | |
2831 | * i40e_exit_module - Driver Exit Cleanup Routine | |
2832 | * | |
2833 | * i40e_exit_module is called just before the driver is removed | |
2834 | * from memory. | |
2835 | **/ | |
2836 | static void __exit i40evf_exit_module(void) | |
2837 | { | |
2838 | pci_unregister_driver(&i40evf_driver); | |
2803b16c | 2839 | destroy_workqueue(i40evf_wq); |
5eae00c5 GR |
2840 | } |
2841 | ||
2842 | module_exit(i40evf_exit_module); | |
2843 | ||
2844 | /* i40evf_main.c */ |