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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 |
47c46778 | 41 | #define DRV_VERSION_BUILD 5 |
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; | |
644 | struct net_device *netdev = adapter->netdev; | |
645 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
646 | int i; | |
647 | int rx_buf_len; | |
648 | ||
649 | ||
5eae00c5 | 650 | /* Set the RX buffer length according to the mode */ |
00e5ec4b MW |
651 | if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED || |
652 | netdev->mtu <= ETH_DATA_LEN) | |
653 | rx_buf_len = I40EVF_RXBUFFER_2048; | |
654 | else | |
655 | rx_buf_len = ALIGN(max_frame, 1024); | |
5eae00c5 | 656 | |
cc052927 | 657 | for (i = 0; i < adapter->num_active_queues; i++) { |
0dd438d8 MW |
658 | adapter->rx_rings[i].tail = hw->hw_addr + I40E_QRX_TAIL1(i); |
659 | adapter->rx_rings[i].rx_buf_len = rx_buf_len; | |
00e5ec4b MW |
660 | if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED) { |
661 | set_ring_ps_enabled(&adapter->rx_rings[i]); | |
662 | adapter->rx_rings[i].rx_hdr_len = I40E_RX_HDR_SIZE; | |
663 | } else { | |
664 | clear_ring_ps_enabled(&adapter->rx_rings[i]); | |
665 | } | |
5eae00c5 GR |
666 | } |
667 | } | |
668 | ||
669 | /** | |
670 | * i40evf_find_vlan - Search filter list for specific vlan filter | |
671 | * @adapter: board private structure | |
672 | * @vlan: vlan tag | |
673 | * | |
674 | * Returns ptr to the filter object or NULL | |
675 | **/ | |
676 | static struct | |
677 | i40evf_vlan_filter *i40evf_find_vlan(struct i40evf_adapter *adapter, u16 vlan) | |
678 | { | |
679 | struct i40evf_vlan_filter *f; | |
680 | ||
681 | list_for_each_entry(f, &adapter->vlan_filter_list, list) { | |
682 | if (vlan == f->vlan) | |
683 | return f; | |
684 | } | |
685 | return NULL; | |
686 | } | |
687 | ||
688 | /** | |
689 | * i40evf_add_vlan - Add a vlan filter to the list | |
690 | * @adapter: board private structure | |
691 | * @vlan: VLAN tag | |
692 | * | |
693 | * Returns ptr to the filter object or NULL when no memory available. | |
694 | **/ | |
695 | static struct | |
696 | i40evf_vlan_filter *i40evf_add_vlan(struct i40evf_adapter *adapter, u16 vlan) | |
697 | { | |
13acb546 MW |
698 | struct i40evf_vlan_filter *f = NULL; |
699 | int count = 50; | |
700 | ||
701 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
702 | &adapter->crit_section)) { | |
703 | udelay(1); | |
704 | if (--count == 0) | |
705 | goto out; | |
706 | } | |
5eae00c5 GR |
707 | |
708 | f = i40evf_find_vlan(adapter, vlan); | |
348d4994 | 709 | if (!f) { |
5eae00c5 | 710 | f = kzalloc(sizeof(*f), GFP_ATOMIC); |
348d4994 | 711 | if (!f) |
13acb546 | 712 | goto clearout; |
249c8b8d | 713 | |
5eae00c5 GR |
714 | f->vlan = vlan; |
715 | ||
716 | INIT_LIST_HEAD(&f->list); | |
717 | list_add(&f->list, &adapter->vlan_filter_list); | |
718 | f->add = true; | |
719 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER; | |
720 | } | |
721 | ||
13acb546 MW |
722 | clearout: |
723 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
724 | out: | |
5eae00c5 GR |
725 | return f; |
726 | } | |
727 | ||
728 | /** | |
729 | * i40evf_del_vlan - Remove a vlan filter from the list | |
730 | * @adapter: board private structure | |
731 | * @vlan: VLAN tag | |
732 | **/ | |
733 | static void i40evf_del_vlan(struct i40evf_adapter *adapter, u16 vlan) | |
734 | { | |
735 | struct i40evf_vlan_filter *f; | |
13acb546 MW |
736 | int count = 50; |
737 | ||
738 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
739 | &adapter->crit_section)) { | |
740 | udelay(1); | |
741 | if (--count == 0) | |
742 | return; | |
743 | } | |
5eae00c5 GR |
744 | |
745 | f = i40evf_find_vlan(adapter, vlan); | |
746 | if (f) { | |
747 | f->remove = true; | |
748 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER; | |
749 | } | |
13acb546 | 750 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
5eae00c5 GR |
751 | } |
752 | ||
753 | /** | |
754 | * i40evf_vlan_rx_add_vid - Add a VLAN filter to a device | |
755 | * @netdev: network device struct | |
756 | * @vid: VLAN tag | |
757 | **/ | |
758 | static int i40evf_vlan_rx_add_vid(struct net_device *netdev, | |
75a64435 | 759 | __always_unused __be16 proto, u16 vid) |
5eae00c5 GR |
760 | { |
761 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
762 | ||
8ed995ff MW |
763 | if (!VLAN_ALLOWED(adapter)) |
764 | return -EIO; | |
5eae00c5 GR |
765 | if (i40evf_add_vlan(adapter, vid) == NULL) |
766 | return -ENOMEM; | |
767 | return 0; | |
768 | } | |
769 | ||
770 | /** | |
771 | * i40evf_vlan_rx_kill_vid - Remove a VLAN filter from a device | |
772 | * @netdev: network device struct | |
773 | * @vid: VLAN tag | |
774 | **/ | |
775 | static int i40evf_vlan_rx_kill_vid(struct net_device *netdev, | |
75a64435 | 776 | __always_unused __be16 proto, u16 vid) |
5eae00c5 GR |
777 | { |
778 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
779 | ||
8ed995ff MW |
780 | if (VLAN_ALLOWED(adapter)) { |
781 | i40evf_del_vlan(adapter, vid); | |
782 | return 0; | |
783 | } | |
784 | return -EIO; | |
5eae00c5 GR |
785 | } |
786 | ||
787 | /** | |
788 | * i40evf_find_filter - Search filter list for specific mac filter | |
789 | * @adapter: board private structure | |
790 | * @macaddr: the MAC address | |
791 | * | |
792 | * Returns ptr to the filter object or NULL | |
793 | **/ | |
794 | static struct | |
795 | i40evf_mac_filter *i40evf_find_filter(struct i40evf_adapter *adapter, | |
796 | u8 *macaddr) | |
797 | { | |
798 | struct i40evf_mac_filter *f; | |
799 | ||
800 | if (!macaddr) | |
801 | return NULL; | |
802 | ||
803 | list_for_each_entry(f, &adapter->mac_filter_list, list) { | |
804 | if (ether_addr_equal(macaddr, f->macaddr)) | |
805 | return f; | |
806 | } | |
807 | return NULL; | |
808 | } | |
809 | ||
810 | /** | |
811 | * i40e_add_filter - Add a mac filter to the filter list | |
812 | * @adapter: board private structure | |
813 | * @macaddr: the MAC address | |
814 | * | |
815 | * Returns ptr to the filter object or NULL when no memory available. | |
816 | **/ | |
817 | static struct | |
818 | i40evf_mac_filter *i40evf_add_filter(struct i40evf_adapter *adapter, | |
819 | u8 *macaddr) | |
820 | { | |
821 | struct i40evf_mac_filter *f; | |
54e16f64 | 822 | int count = 50; |
5eae00c5 GR |
823 | |
824 | if (!macaddr) | |
825 | return NULL; | |
826 | ||
827 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
54e16f64 | 828 | &adapter->crit_section)) { |
b65476cd | 829 | udelay(1); |
54e16f64 MW |
830 | if (--count == 0) |
831 | return NULL; | |
832 | } | |
5eae00c5 GR |
833 | |
834 | f = i40evf_find_filter(adapter, macaddr); | |
348d4994 | 835 | if (!f) { |
5eae00c5 | 836 | f = kzalloc(sizeof(*f), GFP_ATOMIC); |
348d4994 | 837 | if (!f) { |
5eae00c5 GR |
838 | clear_bit(__I40EVF_IN_CRITICAL_TASK, |
839 | &adapter->crit_section); | |
840 | return NULL; | |
841 | } | |
842 | ||
9a173901 | 843 | ether_addr_copy(f->macaddr, macaddr); |
5eae00c5 GR |
844 | |
845 | list_add(&f->list, &adapter->mac_filter_list); | |
846 | f->add = true; | |
847 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; | |
848 | } | |
849 | ||
850 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
851 | return f; | |
852 | } | |
853 | ||
854 | /** | |
855 | * i40evf_set_mac - NDO callback to set port mac address | |
856 | * @netdev: network interface device structure | |
857 | * @p: pointer to an address structure | |
858 | * | |
859 | * Returns 0 on success, negative on failure | |
860 | **/ | |
861 | static int i40evf_set_mac(struct net_device *netdev, void *p) | |
862 | { | |
863 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
864 | struct i40e_hw *hw = &adapter->hw; | |
865 | struct i40evf_mac_filter *f; | |
866 | struct sockaddr *addr = p; | |
867 | ||
868 | if (!is_valid_ether_addr(addr->sa_data)) | |
869 | return -EADDRNOTAVAIL; | |
870 | ||
871 | if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) | |
872 | return 0; | |
873 | ||
14e52ee2 MW |
874 | if (adapter->flags & I40EVF_FLAG_ADDR_SET_BY_PF) |
875 | return -EPERM; | |
876 | ||
877 | f = i40evf_find_filter(adapter, hw->mac.addr); | |
878 | if (f) { | |
879 | f->remove = true; | |
880 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; | |
881 | } | |
882 | ||
5eae00c5 GR |
883 | f = i40evf_add_filter(adapter, addr->sa_data); |
884 | if (f) { | |
9a173901 GR |
885 | ether_addr_copy(hw->mac.addr, addr->sa_data); |
886 | ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr); | |
5eae00c5 GR |
887 | } |
888 | ||
889 | return (f == NULL) ? -ENOMEM : 0; | |
890 | } | |
891 | ||
892 | /** | |
893 | * i40evf_set_rx_mode - NDO callback to set the netdev filters | |
894 | * @netdev: network interface device structure | |
895 | **/ | |
896 | static void i40evf_set_rx_mode(struct net_device *netdev) | |
897 | { | |
898 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
899 | struct i40evf_mac_filter *f, *ftmp; | |
900 | struct netdev_hw_addr *uca; | |
901 | struct netdev_hw_addr *mca; | |
2f41f335 | 902 | struct netdev_hw_addr *ha; |
54e16f64 | 903 | int count = 50; |
5eae00c5 GR |
904 | |
905 | /* add addr if not already in the filter list */ | |
906 | netdev_for_each_uc_addr(uca, netdev) { | |
907 | i40evf_add_filter(adapter, uca->addr); | |
908 | } | |
909 | netdev_for_each_mc_addr(mca, netdev) { | |
910 | i40evf_add_filter(adapter, mca->addr); | |
911 | } | |
912 | ||
913 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
54e16f64 | 914 | &adapter->crit_section)) { |
b65476cd | 915 | udelay(1); |
54e16f64 MW |
916 | if (--count == 0) { |
917 | dev_err(&adapter->pdev->dev, | |
918 | "Failed to get lock in %s\n", __func__); | |
919 | return; | |
920 | } | |
921 | } | |
5eae00c5 GR |
922 | /* remove filter if not in netdev list */ |
923 | list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { | |
2f41f335 SN |
924 | netdev_for_each_mc_addr(mca, netdev) |
925 | if (ether_addr_equal(mca->addr, f->macaddr)) | |
926 | goto bottom_of_search_loop; | |
927 | ||
928 | netdev_for_each_uc_addr(uca, netdev) | |
929 | if (ether_addr_equal(uca->addr, f->macaddr)) | |
930 | goto bottom_of_search_loop; | |
931 | ||
932 | for_each_dev_addr(netdev, ha) | |
933 | if (ether_addr_equal(ha->addr, f->macaddr)) | |
934 | goto bottom_of_search_loop; | |
935 | ||
936 | if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr)) | |
937 | goto bottom_of_search_loop; | |
938 | ||
939 | /* f->macaddr wasn't found in uc, mc, or ha list so delete it */ | |
940 | f->remove = true; | |
941 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; | |
942 | ||
943 | bottom_of_search_loop: | |
944 | continue; | |
5eae00c5 GR |
945 | } |
946 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
947 | } | |
948 | ||
949 | /** | |
950 | * i40evf_napi_enable_all - enable NAPI on all queue vectors | |
951 | * @adapter: board private structure | |
952 | **/ | |
953 | static void i40evf_napi_enable_all(struct i40evf_adapter *adapter) | |
954 | { | |
955 | int q_idx; | |
956 | struct i40e_q_vector *q_vector; | |
957 | int q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
958 | ||
959 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
960 | struct napi_struct *napi; | |
75a64435 | 961 | |
7d96ba1a | 962 | q_vector = &adapter->q_vectors[q_idx]; |
5eae00c5 GR |
963 | napi = &q_vector->napi; |
964 | napi_enable(napi); | |
965 | } | |
966 | } | |
967 | ||
968 | /** | |
969 | * i40evf_napi_disable_all - disable NAPI on all queue vectors | |
970 | * @adapter: board private structure | |
971 | **/ | |
972 | static void i40evf_napi_disable_all(struct i40evf_adapter *adapter) | |
973 | { | |
974 | int q_idx; | |
975 | struct i40e_q_vector *q_vector; | |
976 | int q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
977 | ||
978 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
7d96ba1a | 979 | q_vector = &adapter->q_vectors[q_idx]; |
5eae00c5 GR |
980 | napi_disable(&q_vector->napi); |
981 | } | |
982 | } | |
983 | ||
984 | /** | |
985 | * i40evf_configure - set up transmit and receive data structures | |
986 | * @adapter: board private structure | |
987 | **/ | |
988 | static void i40evf_configure(struct i40evf_adapter *adapter) | |
989 | { | |
990 | struct net_device *netdev = adapter->netdev; | |
991 | int i; | |
992 | ||
993 | i40evf_set_rx_mode(netdev); | |
994 | ||
995 | i40evf_configure_tx(adapter); | |
996 | i40evf_configure_rx(adapter); | |
997 | adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES; | |
998 | ||
cc052927 | 999 | for (i = 0; i < adapter->num_active_queues; i++) { |
0dd438d8 | 1000 | struct i40e_ring *ring = &adapter->rx_rings[i]; |
75a64435 | 1001 | |
00e5ec4b MW |
1002 | if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED) { |
1003 | i40evf_alloc_rx_headers(ring); | |
1004 | i40evf_alloc_rx_buffers_ps(ring, ring->count); | |
1005 | } else { | |
a132af24 | 1006 | i40evf_alloc_rx_buffers_1buf(ring, ring->count); |
00e5ec4b | 1007 | } |
5eae00c5 GR |
1008 | ring->next_to_use = ring->count - 1; |
1009 | writel(ring->next_to_use, ring->tail); | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | /** | |
1014 | * i40evf_up_complete - Finish the last steps of bringing up a connection | |
1015 | * @adapter: board private structure | |
1016 | **/ | |
1017 | static int i40evf_up_complete(struct i40evf_adapter *adapter) | |
1018 | { | |
1019 | adapter->state = __I40EVF_RUNNING; | |
1020 | clear_bit(__I40E_DOWN, &adapter->vsi.state); | |
1021 | ||
1022 | i40evf_napi_enable_all(adapter); | |
1023 | ||
1024 | adapter->aq_required |= I40EVF_FLAG_AQ_ENABLE_QUEUES; | |
1025 | mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); | |
1026 | return 0; | |
1027 | } | |
1028 | ||
5eae00c5 GR |
1029 | /** |
1030 | * i40e_down - Shutdown the connection processing | |
1031 | * @adapter: board private structure | |
1032 | **/ | |
1033 | void i40evf_down(struct i40evf_adapter *adapter) | |
1034 | { | |
1035 | struct net_device *netdev = adapter->netdev; | |
1036 | struct i40evf_mac_filter *f; | |
1037 | ||
209dc4da | 1038 | if (adapter->state <= __I40EVF_DOWN_PENDING) |
ddf0b3a6 MW |
1039 | return; |
1040 | ||
53d0b3ae MW |
1041 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, |
1042 | &adapter->crit_section)) | |
1043 | usleep_range(500, 1000); | |
1044 | ||
63e18c25 MW |
1045 | netif_carrier_off(netdev); |
1046 | netif_tx_disable(netdev); | |
748c434b | 1047 | i40evf_napi_disable_all(adapter); |
63e18c25 | 1048 | i40evf_irq_disable(adapter); |
53d0b3ae | 1049 | |
ef8693eb | 1050 | /* remove all MAC filters */ |
5eae00c5 GR |
1051 | list_for_each_entry(f, &adapter->mac_filter_list, list) { |
1052 | f->remove = true; | |
1053 | } | |
ed1f5b58 MW |
1054 | /* remove all VLAN filters */ |
1055 | list_for_each_entry(f, &adapter->vlan_filter_list, list) { | |
1056 | f->remove = true; | |
1057 | } | |
ef8693eb MW |
1058 | if (!(adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) && |
1059 | adapter->state != __I40EVF_RESETTING) { | |
53d0b3ae MW |
1060 | /* cancel any current operation */ |
1061 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
53d0b3ae MW |
1062 | /* Schedule operations to close down the HW. Don't wait |
1063 | * here for this to complete. The watchdog is still running | |
1064 | * and it will take care of this. | |
1065 | */ | |
1066 | adapter->aq_required = I40EVF_FLAG_AQ_DEL_MAC_FILTER; | |
ed1f5b58 | 1067 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER; |
ef8693eb | 1068 | adapter->aq_required |= I40EVF_FLAG_AQ_DISABLE_QUEUES; |
ef8693eb | 1069 | } |
5eae00c5 | 1070 | |
53d0b3ae | 1071 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
5eae00c5 GR |
1072 | } |
1073 | ||
1074 | /** | |
1075 | * i40evf_acquire_msix_vectors - Setup the MSIX capability | |
1076 | * @adapter: board private structure | |
1077 | * @vectors: number of vectors to request | |
1078 | * | |
1079 | * Work with the OS to set up the MSIX vectors needed. | |
1080 | * | |
1081 | * Returns 0 on success, negative on failure | |
1082 | **/ | |
1083 | static int | |
1084 | i40evf_acquire_msix_vectors(struct i40evf_adapter *adapter, int vectors) | |
1085 | { | |
1086 | int err, vector_threshold; | |
1087 | ||
1088 | /* We'll want at least 3 (vector_threshold): | |
1089 | * 0) Other (Admin Queue and link, mostly) | |
1090 | * 1) TxQ[0] Cleanup | |
1091 | * 2) RxQ[0] Cleanup | |
1092 | */ | |
1093 | vector_threshold = MIN_MSIX_COUNT; | |
1094 | ||
1095 | /* The more we get, the more we will assign to Tx/Rx Cleanup | |
1096 | * for the separate queues...where Rx Cleanup >= Tx Cleanup. | |
1097 | * Right now, we simply care about how many we'll get; we'll | |
1098 | * set them up later while requesting irq's. | |
1099 | */ | |
fc2f2f5d AG |
1100 | err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries, |
1101 | vector_threshold, vectors); | |
1102 | if (err < 0) { | |
80e72893 | 1103 | dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n"); |
5eae00c5 GR |
1104 | kfree(adapter->msix_entries); |
1105 | adapter->msix_entries = NULL; | |
fc2f2f5d | 1106 | return err; |
5eae00c5 | 1107 | } |
fc2f2f5d AG |
1108 | |
1109 | /* Adjust for only the vectors we'll use, which is minimum | |
1110 | * of max_msix_q_vectors + NONQ_VECS, or the number of | |
1111 | * vectors we were allocated. | |
1112 | */ | |
1113 | adapter->num_msix_vectors = err; | |
1114 | return 0; | |
5eae00c5 GR |
1115 | } |
1116 | ||
1117 | /** | |
1118 | * i40evf_free_queues - Free memory for all rings | |
1119 | * @adapter: board private structure to initialize | |
1120 | * | |
1121 | * Free all of the memory associated with queue pairs. | |
1122 | **/ | |
1123 | static void i40evf_free_queues(struct i40evf_adapter *adapter) | |
1124 | { | |
5eae00c5 GR |
1125 | if (!adapter->vsi_res) |
1126 | return; | |
0dd438d8 | 1127 | kfree(adapter->tx_rings); |
10311540 | 1128 | adapter->tx_rings = NULL; |
0dd438d8 | 1129 | kfree(adapter->rx_rings); |
10311540 | 1130 | adapter->rx_rings = NULL; |
5eae00c5 GR |
1131 | } |
1132 | ||
1133 | /** | |
1134 | * i40evf_alloc_queues - Allocate memory for all rings | |
1135 | * @adapter: board private structure to initialize | |
1136 | * | |
1137 | * We allocate one ring per queue at run-time since we don't know the | |
1138 | * number of queues at compile-time. The polling_netdev array is | |
1139 | * intended for Multiqueue, but should work fine with a single queue. | |
1140 | **/ | |
1141 | static int i40evf_alloc_queues(struct i40evf_adapter *adapter) | |
1142 | { | |
1143 | int i; | |
1144 | ||
0dd438d8 MW |
1145 | adapter->tx_rings = kcalloc(adapter->num_active_queues, |
1146 | sizeof(struct i40e_ring), GFP_KERNEL); | |
1147 | if (!adapter->tx_rings) | |
1148 | goto err_out; | |
1149 | adapter->rx_rings = kcalloc(adapter->num_active_queues, | |
1150 | sizeof(struct i40e_ring), GFP_KERNEL); | |
1151 | if (!adapter->rx_rings) | |
1152 | goto err_out; | |
1153 | ||
cc052927 | 1154 | for (i = 0; i < adapter->num_active_queues; i++) { |
5eae00c5 GR |
1155 | struct i40e_ring *tx_ring; |
1156 | struct i40e_ring *rx_ring; | |
1157 | ||
0dd438d8 | 1158 | tx_ring = &adapter->tx_rings[i]; |
5eae00c5 GR |
1159 | |
1160 | tx_ring->queue_index = i; | |
1161 | tx_ring->netdev = adapter->netdev; | |
1162 | tx_ring->dev = &adapter->pdev->dev; | |
d732a184 | 1163 | tx_ring->count = adapter->tx_desc_count; |
1f012279 ASJ |
1164 | if (adapter->flags & I40E_FLAG_WB_ON_ITR_CAPABLE) |
1165 | tx_ring->flags |= I40E_TXR_FLAGS_WB_ON_ITR; | |
5eae00c5 | 1166 | |
0dd438d8 | 1167 | rx_ring = &adapter->rx_rings[i]; |
5eae00c5 GR |
1168 | rx_ring->queue_index = i; |
1169 | rx_ring->netdev = adapter->netdev; | |
1170 | rx_ring->dev = &adapter->pdev->dev; | |
d732a184 | 1171 | rx_ring->count = adapter->rx_desc_count; |
5eae00c5 GR |
1172 | } |
1173 | ||
1174 | return 0; | |
1175 | ||
1176 | err_out: | |
1177 | i40evf_free_queues(adapter); | |
1178 | return -ENOMEM; | |
1179 | } | |
1180 | ||
1181 | /** | |
1182 | * i40evf_set_interrupt_capability - set MSI-X or FAIL if not supported | |
1183 | * @adapter: board private structure to initialize | |
1184 | * | |
1185 | * Attempt to configure the interrupts using the best available | |
1186 | * capabilities of the hardware and the kernel. | |
1187 | **/ | |
1188 | static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter) | |
1189 | { | |
1190 | int vector, v_budget; | |
1191 | int pairs = 0; | |
1192 | int err = 0; | |
1193 | ||
1194 | if (!adapter->vsi_res) { | |
1195 | err = -EIO; | |
1196 | goto out; | |
1197 | } | |
cc052927 | 1198 | pairs = adapter->num_active_queues; |
5eae00c5 GR |
1199 | |
1200 | /* It's easy to be greedy for MSI-X vectors, but it really | |
1201 | * doesn't do us much good if we have a lot more vectors | |
1202 | * than CPU's. So let's be conservative and only ask for | |
1203 | * (roughly) twice the number of vectors as there are CPU's. | |
1204 | */ | |
30a500e2 MW |
1205 | v_budget = min_t(int, pairs, (int)(num_online_cpus() * 2)) + NONQ_VECS; |
1206 | v_budget = min_t(int, v_budget, (int)adapter->vf_res->max_vectors); | |
5eae00c5 | 1207 | |
5eae00c5 GR |
1208 | adapter->msix_entries = kcalloc(v_budget, |
1209 | sizeof(struct msix_entry), GFP_KERNEL); | |
1210 | if (!adapter->msix_entries) { | |
1211 | err = -ENOMEM; | |
1212 | goto out; | |
1213 | } | |
1214 | ||
1215 | for (vector = 0; vector < v_budget; vector++) | |
1216 | adapter->msix_entries[vector].entry = vector; | |
1217 | ||
313ed2d5 | 1218 | err = i40evf_acquire_msix_vectors(adapter, v_budget); |
5eae00c5 GR |
1219 | |
1220 | out: | |
e6c4cf6f MW |
1221 | netif_set_real_num_rx_queues(adapter->netdev, pairs); |
1222 | netif_set_real_num_tx_queues(adapter->netdev, pairs); | |
5eae00c5 GR |
1223 | return err; |
1224 | } | |
1225 | ||
e25d00b8 | 1226 | /** |
43a3d9ba MW |
1227 | * i40e_config_rss_aq - Configure RSS keys and lut by using AQ commands |
1228 | * @adapter: board private structure | |
2c86ac3c HZ |
1229 | * |
1230 | * Return 0 on success, negative on failure | |
e25d00b8 | 1231 | **/ |
43a3d9ba | 1232 | static int i40evf_config_rss_aq(struct i40evf_adapter *adapter) |
e25d00b8 | 1233 | { |
43a3d9ba MW |
1234 | struct i40e_aqc_get_set_rss_key_data *rss_key = |
1235 | (struct i40e_aqc_get_set_rss_key_data *)adapter->rss_key; | |
e25d00b8 | 1236 | struct i40e_hw *hw = &adapter->hw; |
2c86ac3c | 1237 | int ret = 0; |
e25d00b8 | 1238 | |
e25d00b8 ASJ |
1239 | if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) { |
1240 | /* bail because we already have a command pending */ | |
e3d132d1 | 1241 | dev_err(&adapter->pdev->dev, "Cannot configure RSS, command %d pending\n", |
e25d00b8 | 1242 | adapter->current_op); |
2c86ac3c | 1243 | return -EBUSY; |
e25d00b8 ASJ |
1244 | } |
1245 | ||
43a3d9ba MW |
1246 | ret = i40evf_aq_set_rss_key(hw, adapter->vsi.id, rss_key); |
1247 | if (ret) { | |
1248 | dev_err(&adapter->pdev->dev, "Cannot set RSS key, err %s aq_err %s\n", | |
1249 | i40evf_stat_str(hw, ret), | |
1250 | i40evf_aq_str(hw, hw->aq.asq_last_status)); | |
1251 | return ret; | |
1252 | ||
2c86ac3c | 1253 | } |
e25d00b8 | 1254 | |
43a3d9ba MW |
1255 | ret = i40evf_aq_set_rss_lut(hw, adapter->vsi.id, false, |
1256 | adapter->rss_lut, adapter->rss_lut_size); | |
1257 | if (ret) { | |
1258 | dev_err(&adapter->pdev->dev, "Cannot set RSS lut, err %s aq_err %s\n", | |
1259 | i40evf_stat_str(hw, ret), | |
1260 | i40evf_aq_str(hw, hw->aq.asq_last_status)); | |
e25d00b8 ASJ |
1261 | } |
1262 | ||
2c86ac3c | 1263 | return ret; |
43a3d9ba | 1264 | |
e25d00b8 ASJ |
1265 | } |
1266 | ||
1267 | /** | |
2c86ac3c | 1268 | * i40evf_config_rss_reg - Configure RSS keys and lut by writing registers |
43a3d9ba | 1269 | * @adapter: board private structure |
2c86ac3c HZ |
1270 | * |
1271 | * Returns 0 on success, negative on failure | |
e25d00b8 | 1272 | **/ |
43a3d9ba | 1273 | static int i40evf_config_rss_reg(struct i40evf_adapter *adapter) |
e25d00b8 ASJ |
1274 | { |
1275 | struct i40e_hw *hw = &adapter->hw; | |
43a3d9ba | 1276 | u32 *dw; |
2c86ac3c | 1277 | u16 i; |
e25d00b8 | 1278 | |
43a3d9ba MW |
1279 | dw = (u32 *)adapter->rss_key; |
1280 | for (i = 0; i <= adapter->rss_key_size / 4; i++) | |
1281 | wr32(hw, I40E_VFQF_HKEY(i), dw[i]); | |
2c86ac3c | 1282 | |
43a3d9ba MW |
1283 | dw = (u32 *)adapter->rss_lut; |
1284 | for (i = 0; i <= adapter->rss_lut_size / 4; i++) | |
1285 | wr32(hw, I40E_VFQF_HLUT(i), dw[i]); | |
2c86ac3c | 1286 | |
e25d00b8 | 1287 | i40e_flush(hw); |
2c86ac3c HZ |
1288 | |
1289 | return 0; | |
1290 | } | |
1291 | ||
1292 | /** | |
1293 | * i40evf_config_rss - Configure RSS keys and lut | |
43a3d9ba | 1294 | * @adapter: board private structure |
90b02b43 HZ |
1295 | * |
1296 | * Returns 0 on success, negative on failure | |
1297 | **/ | |
43a3d9ba | 1298 | int i40evf_config_rss(struct i40evf_adapter *adapter) |
90b02b43 | 1299 | { |
90b02b43 | 1300 | |
43a3d9ba MW |
1301 | if (RSS_PF(adapter)) { |
1302 | adapter->aq_required |= I40EVF_FLAG_AQ_SET_RSS_LUT | | |
1303 | I40EVF_FLAG_AQ_SET_RSS_KEY; | |
1304 | return 0; | |
1305 | } else if (RSS_AQ(adapter)) { | |
1306 | return i40evf_config_rss_aq(adapter); | |
1307 | } else { | |
1308 | return i40evf_config_rss_reg(adapter); | |
1309 | } | |
90b02b43 HZ |
1310 | } |
1311 | ||
2c86ac3c HZ |
1312 | /** |
1313 | * i40evf_fill_rss_lut - Fill the lut with default values | |
43a3d9ba | 1314 | * @adapter: board private structure |
2c86ac3c | 1315 | **/ |
43a3d9ba | 1316 | static void i40evf_fill_rss_lut(struct i40evf_adapter *adapter) |
2c86ac3c HZ |
1317 | { |
1318 | u16 i; | |
1319 | ||
43a3d9ba MW |
1320 | for (i = 0; i < adapter->rss_lut_size; i++) |
1321 | adapter->rss_lut[i] = i % adapter->num_active_queues; | |
e25d00b8 ASJ |
1322 | } |
1323 | ||
1324 | /** | |
96a81986 | 1325 | * i40evf_init_rss - Prepare for RSS |
e25d00b8 | 1326 | * @adapter: board private structure |
2c86ac3c HZ |
1327 | * |
1328 | * Return 0 on success, negative on failure | |
e25d00b8 | 1329 | **/ |
2c86ac3c | 1330 | static int i40evf_init_rss(struct i40evf_adapter *adapter) |
e25d00b8 ASJ |
1331 | { |
1332 | struct i40e_hw *hw = &adapter->hw; | |
2c86ac3c | 1333 | int ret; |
e25d00b8 | 1334 | |
43a3d9ba MW |
1335 | if (!RSS_PF(adapter)) { |
1336 | /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */ | |
1337 | if (adapter->vf_res->vf_offload_flags & | |
1338 | I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2) | |
1339 | adapter->hena = I40E_DEFAULT_RSS_HENA_EXPANDED; | |
1340 | else | |
1341 | adapter->hena = I40E_DEFAULT_RSS_HENA; | |
e25d00b8 | 1342 | |
43a3d9ba MW |
1343 | wr32(hw, I40E_VFQF_HENA(0), (u32)adapter->hena); |
1344 | wr32(hw, I40E_VFQF_HENA(1), (u32)(adapter->hena >> 32)); | |
1345 | } | |
66f9af85 | 1346 | |
43a3d9ba | 1347 | i40evf_fill_rss_lut(adapter); |
66f9af85 | 1348 | |
43a3d9ba MW |
1349 | netdev_rss_key_fill((void *)adapter->rss_key, adapter->rss_key_size); |
1350 | ret = i40evf_config_rss(adapter); | |
2c86ac3c HZ |
1351 | |
1352 | return ret; | |
e25d00b8 ASJ |
1353 | } |
1354 | ||
5eae00c5 GR |
1355 | /** |
1356 | * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors | |
1357 | * @adapter: board private structure to initialize | |
1358 | * | |
1359 | * We allocate one q_vector per queue interrupt. If allocation fails we | |
1360 | * return -ENOMEM. | |
1361 | **/ | |
1362 | static int i40evf_alloc_q_vectors(struct i40evf_adapter *adapter) | |
1363 | { | |
7d96ba1a | 1364 | int q_idx = 0, num_q_vectors; |
5eae00c5 GR |
1365 | struct i40e_q_vector *q_vector; |
1366 | ||
1367 | num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
0dd438d8 | 1368 | adapter->q_vectors = kcalloc(num_q_vectors, sizeof(*q_vector), |
7d96ba1a MW |
1369 | GFP_KERNEL); |
1370 | if (!adapter->q_vectors) | |
311f23e9 | 1371 | return -ENOMEM; |
5eae00c5 GR |
1372 | |
1373 | for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { | |
7d96ba1a | 1374 | q_vector = &adapter->q_vectors[q_idx]; |
5eae00c5 GR |
1375 | q_vector->adapter = adapter; |
1376 | q_vector->vsi = &adapter->vsi; | |
1377 | q_vector->v_idx = q_idx; | |
1378 | netif_napi_add(adapter->netdev, &q_vector->napi, | |
75a64435 | 1379 | i40evf_napi_poll, NAPI_POLL_WEIGHT); |
5eae00c5 GR |
1380 | } |
1381 | ||
1382 | return 0; | |
5eae00c5 GR |
1383 | } |
1384 | ||
1385 | /** | |
1386 | * i40evf_free_q_vectors - Free memory allocated for interrupt vectors | |
1387 | * @adapter: board private structure to initialize | |
1388 | * | |
1389 | * This function frees the memory allocated to the q_vectors. In addition if | |
1390 | * NAPI is enabled it will delete any references to the NAPI struct prior | |
1391 | * to freeing the q_vector. | |
1392 | **/ | |
1393 | static void i40evf_free_q_vectors(struct i40evf_adapter *adapter) | |
1394 | { | |
1395 | int q_idx, num_q_vectors; | |
1396 | int napi_vectors; | |
1397 | ||
1398 | num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
cc052927 | 1399 | napi_vectors = adapter->num_active_queues; |
5eae00c5 GR |
1400 | |
1401 | for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { | |
7d96ba1a | 1402 | struct i40e_q_vector *q_vector = &adapter->q_vectors[q_idx]; |
5eae00c5 GR |
1403 | if (q_idx < napi_vectors) |
1404 | netif_napi_del(&q_vector->napi); | |
5eae00c5 | 1405 | } |
7d96ba1a | 1406 | kfree(adapter->q_vectors); |
5eae00c5 GR |
1407 | } |
1408 | ||
1409 | /** | |
1410 | * i40evf_reset_interrupt_capability - Reset MSIX setup | |
1411 | * @adapter: board private structure | |
1412 | * | |
1413 | **/ | |
1414 | void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter) | |
1415 | { | |
1416 | pci_disable_msix(adapter->pdev); | |
1417 | kfree(adapter->msix_entries); | |
1418 | adapter->msix_entries = NULL; | |
5eae00c5 GR |
1419 | } |
1420 | ||
1421 | /** | |
1422 | * i40evf_init_interrupt_scheme - Determine if MSIX is supported and init | |
1423 | * @adapter: board private structure to initialize | |
1424 | * | |
1425 | **/ | |
1426 | int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter) | |
1427 | { | |
1428 | int err; | |
1429 | ||
1430 | err = i40evf_set_interrupt_capability(adapter); | |
1431 | if (err) { | |
1432 | dev_err(&adapter->pdev->dev, | |
1433 | "Unable to setup interrupt capabilities\n"); | |
1434 | goto err_set_interrupt; | |
1435 | } | |
1436 | ||
1437 | err = i40evf_alloc_q_vectors(adapter); | |
1438 | if (err) { | |
1439 | dev_err(&adapter->pdev->dev, | |
1440 | "Unable to allocate memory for queue vectors\n"); | |
1441 | goto err_alloc_q_vectors; | |
1442 | } | |
1443 | ||
1444 | err = i40evf_alloc_queues(adapter); | |
1445 | if (err) { | |
1446 | dev_err(&adapter->pdev->dev, | |
1447 | "Unable to allocate memory for queues\n"); | |
1448 | goto err_alloc_queues; | |
1449 | } | |
1450 | ||
1451 | dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u", | |
75a64435 MW |
1452 | (adapter->num_active_queues > 1) ? "Enabled" : "Disabled", |
1453 | adapter->num_active_queues); | |
5eae00c5 GR |
1454 | |
1455 | return 0; | |
1456 | err_alloc_queues: | |
1457 | i40evf_free_q_vectors(adapter); | |
1458 | err_alloc_q_vectors: | |
1459 | i40evf_reset_interrupt_capability(adapter); | |
1460 | err_set_interrupt: | |
1461 | return err; | |
1462 | } | |
1463 | ||
66f9af85 | 1464 | /** |
43a3d9ba MW |
1465 | * i40evf_free_rss - Free memory used by RSS structs |
1466 | * @adapter: board private structure | |
66f9af85 | 1467 | **/ |
43a3d9ba | 1468 | static void i40evf_free_rss(struct i40evf_adapter *adapter) |
66f9af85 | 1469 | { |
43a3d9ba MW |
1470 | kfree(adapter->rss_key); |
1471 | adapter->rss_key = NULL; | |
66f9af85 | 1472 | |
43a3d9ba MW |
1473 | kfree(adapter->rss_lut); |
1474 | adapter->rss_lut = NULL; | |
66f9af85 HZ |
1475 | } |
1476 | ||
5eae00c5 GR |
1477 | /** |
1478 | * i40evf_watchdog_timer - Periodic call-back timer | |
1479 | * @data: pointer to adapter disguised as unsigned long | |
1480 | **/ | |
1481 | static void i40evf_watchdog_timer(unsigned long data) | |
1482 | { | |
1483 | struct i40evf_adapter *adapter = (struct i40evf_adapter *)data; | |
75a64435 | 1484 | |
5eae00c5 GR |
1485 | schedule_work(&adapter->watchdog_task); |
1486 | /* timer will be rescheduled in watchdog task */ | |
1487 | } | |
1488 | ||
1489 | /** | |
1490 | * i40evf_watchdog_task - Periodic call-back task | |
1491 | * @work: pointer to work_struct | |
1492 | **/ | |
1493 | static void i40evf_watchdog_task(struct work_struct *work) | |
1494 | { | |
1495 | struct i40evf_adapter *adapter = container_of(work, | |
75a64435 MW |
1496 | struct i40evf_adapter, |
1497 | watchdog_task); | |
5eae00c5 | 1498 | struct i40e_hw *hw = &adapter->hw; |
ee5c1e92 | 1499 | u32 reg_val; |
5eae00c5 | 1500 | |
ef8693eb MW |
1501 | if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section)) |
1502 | goto restart_watchdog; | |
1503 | ||
1504 | if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) { | |
ee5c1e92 MW |
1505 | reg_val = rd32(hw, I40E_VFGEN_RSTAT) & |
1506 | I40E_VFGEN_RSTAT_VFR_STATE_MASK; | |
1507 | if ((reg_val == I40E_VFR_VFACTIVE) || | |
1508 | (reg_val == I40E_VFR_COMPLETED)) { | |
ef8693eb MW |
1509 | /* A chance for redemption! */ |
1510 | dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n"); | |
1511 | adapter->state = __I40EVF_STARTUP; | |
1512 | adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED; | |
1513 | schedule_delayed_work(&adapter->init_task, 10); | |
1514 | clear_bit(__I40EVF_IN_CRITICAL_TASK, | |
1515 | &adapter->crit_section); | |
1516 | /* Don't reschedule the watchdog, since we've restarted | |
1517 | * the init task. When init_task contacts the PF and | |
1518 | * gets everything set up again, it'll restart the | |
1519 | * watchdog for us. Down, boy. Sit. Stay. Woof. | |
1520 | */ | |
1521 | return; | |
1522 | } | |
ef8693eb MW |
1523 | adapter->aq_required = 0; |
1524 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
5eae00c5 | 1525 | goto watchdog_done; |
ef8693eb | 1526 | } |
5eae00c5 | 1527 | |
ef8693eb MW |
1528 | if ((adapter->state < __I40EVF_DOWN) || |
1529 | (adapter->flags & I40EVF_FLAG_RESET_PENDING)) | |
5eae00c5 GR |
1530 | goto watchdog_done; |
1531 | ||
ef8693eb | 1532 | /* check for reset */ |
ee5c1e92 MW |
1533 | reg_val = rd32(hw, I40E_VF_ARQLEN1) & I40E_VF_ARQLEN1_ARQENABLE_MASK; |
1534 | if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) && !reg_val) { | |
5eae00c5 | 1535 | adapter->state = __I40EVF_RESETTING; |
ef8693eb | 1536 | adapter->flags |= I40EVF_FLAG_RESET_PENDING; |
249c8b8d | 1537 | dev_err(&adapter->pdev->dev, "Hardware reset detected\n"); |
5eae00c5 | 1538 | schedule_work(&adapter->reset_task); |
ef8693eb MW |
1539 | adapter->aq_required = 0; |
1540 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
5eae00c5 GR |
1541 | goto watchdog_done; |
1542 | } | |
1543 | ||
1544 | /* Process admin queue tasks. After init, everything gets done | |
1545 | * here so we don't race on the admin queue. | |
1546 | */ | |
ed636960 | 1547 | if (adapter->current_op) { |
0758e7cb MW |
1548 | if (!i40evf_asq_done(hw)) { |
1549 | dev_dbg(&adapter->pdev->dev, "Admin queue timeout\n"); | |
1550 | i40evf_send_api_ver(adapter); | |
1551 | } | |
5eae00c5 | 1552 | goto watchdog_done; |
0758e7cb | 1553 | } |
e6d038de MW |
1554 | if (adapter->aq_required & I40EVF_FLAG_AQ_GET_CONFIG) { |
1555 | i40evf_send_vf_config_msg(adapter); | |
1556 | goto watchdog_done; | |
1557 | } | |
5eae00c5 | 1558 | |
e284fc88 MW |
1559 | if (adapter->aq_required & I40EVF_FLAG_AQ_DISABLE_QUEUES) { |
1560 | i40evf_disable_queues(adapter); | |
1561 | goto watchdog_done; | |
1562 | } | |
1563 | ||
5eae00c5 GR |
1564 | if (adapter->aq_required & I40EVF_FLAG_AQ_MAP_VECTORS) { |
1565 | i40evf_map_queues(adapter); | |
1566 | goto watchdog_done; | |
1567 | } | |
1568 | ||
1569 | if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_MAC_FILTER) { | |
1570 | i40evf_add_ether_addrs(adapter); | |
1571 | goto watchdog_done; | |
1572 | } | |
1573 | ||
1574 | if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_VLAN_FILTER) { | |
1575 | i40evf_add_vlans(adapter); | |
1576 | goto watchdog_done; | |
1577 | } | |
1578 | ||
1579 | if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_MAC_FILTER) { | |
1580 | i40evf_del_ether_addrs(adapter); | |
1581 | goto watchdog_done; | |
1582 | } | |
1583 | ||
1584 | if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_VLAN_FILTER) { | |
1585 | i40evf_del_vlans(adapter); | |
1586 | goto watchdog_done; | |
1587 | } | |
1588 | ||
5eae00c5 GR |
1589 | if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_QUEUES) { |
1590 | i40evf_configure_queues(adapter); | |
1591 | goto watchdog_done; | |
1592 | } | |
1593 | ||
1594 | if (adapter->aq_required & I40EVF_FLAG_AQ_ENABLE_QUEUES) { | |
1595 | i40evf_enable_queues(adapter); | |
1596 | goto watchdog_done; | |
1597 | } | |
1598 | ||
e25d00b8 ASJ |
1599 | if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_RSS) { |
1600 | /* This message goes straight to the firmware, not the | |
1601 | * PF, so we don't have to set current_op as we will | |
1602 | * not get a response through the ARQ. | |
1603 | */ | |
96a81986 | 1604 | i40evf_init_rss(adapter); |
e25d00b8 ASJ |
1605 | adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_RSS; |
1606 | goto watchdog_done; | |
1607 | } | |
43a3d9ba MW |
1608 | if (adapter->aq_required & I40EVF_FLAG_AQ_GET_HENA) { |
1609 | i40evf_get_hena(adapter); | |
1610 | goto watchdog_done; | |
1611 | } | |
1612 | if (adapter->aq_required & I40EVF_FLAG_AQ_SET_HENA) { | |
1613 | i40evf_set_hena(adapter); | |
1614 | goto watchdog_done; | |
1615 | } | |
1616 | if (adapter->aq_required & I40EVF_FLAG_AQ_SET_RSS_KEY) { | |
1617 | i40evf_set_rss_key(adapter); | |
1618 | goto watchdog_done; | |
1619 | } | |
1620 | if (adapter->aq_required & I40EVF_FLAG_AQ_SET_RSS_LUT) { | |
1621 | i40evf_set_rss_lut(adapter); | |
1622 | goto watchdog_done; | |
1623 | } | |
e25d00b8 | 1624 | |
5eae00c5 GR |
1625 | if (adapter->state == __I40EVF_RUNNING) |
1626 | i40evf_request_stats(adapter); | |
5eae00c5 | 1627 | watchdog_done: |
4870e176 MW |
1628 | if (adapter->state == __I40EVF_RUNNING) { |
1629 | i40evf_irq_enable_queues(adapter, ~0); | |
1630 | i40evf_fire_sw_int(adapter, 0xFF); | |
1631 | } else { | |
1632 | i40evf_fire_sw_int(adapter, 0x1); | |
1633 | } | |
1634 | ||
ef8693eb MW |
1635 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
1636 | restart_watchdog: | |
d3e2edb7 AS |
1637 | if (adapter->state == __I40EVF_REMOVE) |
1638 | return; | |
5eae00c5 GR |
1639 | if (adapter->aq_required) |
1640 | mod_timer(&adapter->watchdog_timer, | |
1641 | jiffies + msecs_to_jiffies(20)); | |
1642 | else | |
1643 | mod_timer(&adapter->watchdog_timer, jiffies + (HZ * 2)); | |
5eae00c5 GR |
1644 | schedule_work(&adapter->adminq_task); |
1645 | } | |
1646 | ||
67c818a1 MW |
1647 | #define I40EVF_RESET_WAIT_MS 10 |
1648 | #define I40EVF_RESET_WAIT_COUNT 500 | |
5eae00c5 GR |
1649 | /** |
1650 | * i40evf_reset_task - Call-back task to handle hardware reset | |
1651 | * @work: pointer to work_struct | |
1652 | * | |
1653 | * During reset we need to shut down and reinitialize the admin queue | |
1654 | * before we can use it to communicate with the PF again. We also clear | |
1655 | * and reinit the rings because that context is lost as well. | |
1656 | **/ | |
1657 | static void i40evf_reset_task(struct work_struct *work) | |
1658 | { | |
ef8693eb MW |
1659 | struct i40evf_adapter *adapter = container_of(work, |
1660 | struct i40evf_adapter, | |
1661 | reset_task); | |
ac833bbf | 1662 | struct net_device *netdev = adapter->netdev; |
5eae00c5 | 1663 | struct i40e_hw *hw = &adapter->hw; |
40d01366 | 1664 | struct i40evf_vlan_filter *vlf; |
ac833bbf | 1665 | struct i40evf_mac_filter *f; |
ee5c1e92 | 1666 | u32 reg_val; |
ac833bbf | 1667 | int i = 0, err; |
5eae00c5 GR |
1668 | |
1669 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
1670 | &adapter->crit_section)) | |
f98a2006 | 1671 | usleep_range(500, 1000); |
3526d800 | 1672 | |
67c818a1 | 1673 | i40evf_misc_irq_disable(adapter); |
3526d800 | 1674 | if (adapter->flags & I40EVF_FLAG_RESET_NEEDED) { |
67c818a1 MW |
1675 | adapter->flags &= ~I40EVF_FLAG_RESET_NEEDED; |
1676 | /* Restart the AQ here. If we have been reset but didn't | |
1677 | * detect it, or if the PF had to reinit, our AQ will be hosed. | |
1678 | */ | |
1679 | i40evf_shutdown_adminq(hw); | |
1680 | i40evf_init_adminq(hw); | |
3526d800 MW |
1681 | i40evf_request_reset(adapter); |
1682 | } | |
67c818a1 | 1683 | adapter->flags |= I40EVF_FLAG_RESET_PENDING; |
3526d800 | 1684 | |
ef8693eb MW |
1685 | /* poll until we see the reset actually happen */ |
1686 | for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { | |
ee5c1e92 MW |
1687 | reg_val = rd32(hw, I40E_VF_ARQLEN1) & |
1688 | I40E_VF_ARQLEN1_ARQENABLE_MASK; | |
1689 | if (!reg_val) | |
ef8693eb | 1690 | break; |
ee5c1e92 | 1691 | usleep_range(5000, 10000); |
ef8693eb MW |
1692 | } |
1693 | if (i == I40EVF_RESET_WAIT_COUNT) { | |
67c818a1 | 1694 | dev_info(&adapter->pdev->dev, "Never saw reset\n"); |
ef8693eb MW |
1695 | goto continue_reset; /* act like the reset happened */ |
1696 | } | |
5eae00c5 | 1697 | |
ef8693eb MW |
1698 | /* wait until the reset is complete and the PF is responding to us */ |
1699 | for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { | |
ee5c1e92 MW |
1700 | reg_val = rd32(hw, I40E_VFGEN_RSTAT) & |
1701 | I40E_VFGEN_RSTAT_VFR_STATE_MASK; | |
1702 | if (reg_val == I40E_VFR_VFACTIVE) | |
5eae00c5 | 1703 | break; |
c88e38cc | 1704 | msleep(I40EVF_RESET_WAIT_MS); |
5eae00c5 | 1705 | } |
509a447a | 1706 | pci_set_master(adapter->pdev); |
67c818a1 MW |
1707 | /* extra wait to make sure minimum wait is met */ |
1708 | msleep(I40EVF_RESET_WAIT_MS); | |
ef8693eb | 1709 | if (i == I40EVF_RESET_WAIT_COUNT) { |
874d1a10 | 1710 | struct i40evf_mac_filter *ftmp; |
6ba36a24 MW |
1711 | struct i40evf_vlan_filter *fv, *fvtmp; |
1712 | ||
5eae00c5 | 1713 | /* reset never finished */ |
80e72893 | 1714 | dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n", |
ee5c1e92 | 1715 | reg_val); |
ef8693eb MW |
1716 | adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED; |
1717 | ||
169f4076 MW |
1718 | if (netif_running(adapter->netdev)) { |
1719 | set_bit(__I40E_DOWN, &adapter->vsi.state); | |
ac833bbf | 1720 | netif_carrier_off(netdev); |
67c818a1 MW |
1721 | netif_tx_disable(netdev); |
1722 | i40evf_napi_disable_all(adapter); | |
1723 | i40evf_irq_disable(adapter); | |
169f4076 MW |
1724 | i40evf_free_traffic_irqs(adapter); |
1725 | i40evf_free_all_tx_resources(adapter); | |
1726 | i40evf_free_all_rx_resources(adapter); | |
1727 | } | |
6ba36a24 MW |
1728 | |
1729 | /* Delete all of the filters, both MAC and VLAN. */ | |
1730 | list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, | |
1731 | list) { | |
1732 | list_del(&f->list); | |
1733 | kfree(f); | |
1734 | } | |
67c818a1 | 1735 | |
6ba36a24 MW |
1736 | list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list, |
1737 | list) { | |
1738 | list_del(&fv->list); | |
1739 | kfree(fv); | |
1740 | } | |
1741 | ||
ef8693eb MW |
1742 | i40evf_free_misc_irq(adapter); |
1743 | i40evf_reset_interrupt_capability(adapter); | |
1744 | i40evf_free_queues(adapter); | |
d31944d6 | 1745 | i40evf_free_q_vectors(adapter); |
ef8693eb MW |
1746 | kfree(adapter->vf_res); |
1747 | i40evf_shutdown_adminq(hw); | |
1748 | adapter->netdev->flags &= ~IFF_UP; | |
1749 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
67c818a1 | 1750 | adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; |
9b9344f7 | 1751 | adapter->state = __I40EVF_DOWN; |
67c818a1 | 1752 | dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n"); |
ef8693eb | 1753 | return; /* Do not attempt to reinit. It's dead, Jim. */ |
5eae00c5 | 1754 | } |
ef8693eb MW |
1755 | |
1756 | continue_reset: | |
3c8e0b98 | 1757 | if (netif_running(adapter->netdev)) { |
3c8e0b98 | 1758 | netif_carrier_off(netdev); |
67c818a1 MW |
1759 | netif_tx_stop_all_queues(netdev); |
1760 | i40evf_napi_disable_all(adapter); | |
3c8e0b98 | 1761 | } |
67c818a1 | 1762 | i40evf_irq_disable(adapter); |
ac833bbf | 1763 | |
5eae00c5 | 1764 | adapter->state = __I40EVF_RESETTING; |
67c818a1 MW |
1765 | adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; |
1766 | ||
1767 | /* free the Tx/Rx rings and descriptors, might be better to just | |
1768 | * re-use them sometime in the future | |
1769 | */ | |
1770 | i40evf_free_all_rx_resources(adapter); | |
1771 | i40evf_free_all_tx_resources(adapter); | |
5eae00c5 GR |
1772 | |
1773 | /* kill and reinit the admin queue */ | |
1774 | if (i40evf_shutdown_adminq(hw)) | |
ac833bbf MW |
1775 | dev_warn(&adapter->pdev->dev, "Failed to shut down adminq\n"); |
1776 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
5eae00c5 GR |
1777 | err = i40evf_init_adminq(hw); |
1778 | if (err) | |
ac833bbf MW |
1779 | dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n", |
1780 | err); | |
5eae00c5 | 1781 | |
e6d038de MW |
1782 | adapter->aq_required = I40EVF_FLAG_AQ_GET_CONFIG; |
1783 | adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS; | |
ac833bbf MW |
1784 | |
1785 | /* re-add all MAC filters */ | |
1786 | list_for_each_entry(f, &adapter->mac_filter_list, list) { | |
1787 | f->add = true; | |
1788 | } | |
1789 | /* re-add all VLAN filters */ | |
40d01366 MW |
1790 | list_for_each_entry(vlf, &adapter->vlan_filter_list, list) { |
1791 | vlf->add = true; | |
ac833bbf | 1792 | } |
e6d038de | 1793 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; |
ac833bbf | 1794 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER; |
5eae00c5 | 1795 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
67c818a1 | 1796 | i40evf_misc_irq_enable(adapter); |
5eae00c5 GR |
1797 | |
1798 | mod_timer(&adapter->watchdog_timer, jiffies + 2); | |
1799 | ||
1800 | if (netif_running(adapter->netdev)) { | |
1801 | /* allocate transmit descriptors */ | |
1802 | err = i40evf_setup_all_tx_resources(adapter); | |
1803 | if (err) | |
1804 | goto reset_err; | |
1805 | ||
1806 | /* allocate receive descriptors */ | |
1807 | err = i40evf_setup_all_rx_resources(adapter); | |
1808 | if (err) | |
1809 | goto reset_err; | |
1810 | ||
1811 | i40evf_configure(adapter); | |
1812 | ||
1813 | err = i40evf_up_complete(adapter); | |
1814 | if (err) | |
1815 | goto reset_err; | |
1816 | ||
1817 | i40evf_irq_enable(adapter, true); | |
67c818a1 MW |
1818 | } else { |
1819 | adapter->state = __I40EVF_DOWN; | |
5eae00c5 | 1820 | } |
67c818a1 | 1821 | |
5eae00c5 GR |
1822 | return; |
1823 | reset_err: | |
80e72893 | 1824 | dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n"); |
5eae00c5 GR |
1825 | i40evf_close(adapter->netdev); |
1826 | } | |
1827 | ||
1828 | /** | |
1829 | * i40evf_adminq_task - worker thread to clean the admin queue | |
1830 | * @work: pointer to work_struct containing our data | |
1831 | **/ | |
1832 | static void i40evf_adminq_task(struct work_struct *work) | |
1833 | { | |
1834 | struct i40evf_adapter *adapter = | |
1835 | container_of(work, struct i40evf_adapter, adminq_task); | |
1836 | struct i40e_hw *hw = &adapter->hw; | |
1837 | struct i40e_arq_event_info event; | |
1838 | struct i40e_virtchnl_msg *v_msg; | |
1839 | i40e_status ret; | |
912257e5 | 1840 | u32 val, oldval; |
5eae00c5 GR |
1841 | u16 pending; |
1842 | ||
ef8693eb | 1843 | if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) |
7235448c | 1844 | goto out; |
ef8693eb | 1845 | |
1001dc37 MW |
1846 | event.buf_len = I40EVF_MAX_AQ_BUF_SIZE; |
1847 | event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL); | |
249c8b8d | 1848 | if (!event.msg_buf) |
7235448c | 1849 | goto out; |
249c8b8d | 1850 | |
5eae00c5 GR |
1851 | v_msg = (struct i40e_virtchnl_msg *)&event.desc; |
1852 | do { | |
1853 | ret = i40evf_clean_arq_element(hw, &event, &pending); | |
8b011ebb | 1854 | if (ret || !v_msg->v_opcode) |
5eae00c5 GR |
1855 | break; /* No event to process or error cleaning ARQ */ |
1856 | ||
1857 | i40evf_virtchnl_completion(adapter, v_msg->v_opcode, | |
1858 | v_msg->v_retval, event.msg_buf, | |
1001dc37 | 1859 | event.msg_len); |
75a64435 | 1860 | if (pending != 0) |
5eae00c5 | 1861 | memset(event.msg_buf, 0, I40EVF_MAX_AQ_BUF_SIZE); |
5eae00c5 GR |
1862 | } while (pending); |
1863 | ||
67c818a1 MW |
1864 | if ((adapter->flags & |
1865 | (I40EVF_FLAG_RESET_PENDING | I40EVF_FLAG_RESET_NEEDED)) || | |
1866 | adapter->state == __I40EVF_RESETTING) | |
1867 | goto freedom; | |
1868 | ||
912257e5 MW |
1869 | /* check for error indications */ |
1870 | val = rd32(hw, hw->aq.arq.len); | |
19b73d8e MW |
1871 | if (val == 0xdeadbeef) /* indicates device in reset */ |
1872 | goto freedom; | |
912257e5 | 1873 | oldval = val; |
b1f3366b | 1874 | if (val & I40E_VF_ARQLEN1_ARQVFE_MASK) { |
912257e5 | 1875 | dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n"); |
b1f3366b | 1876 | val &= ~I40E_VF_ARQLEN1_ARQVFE_MASK; |
912257e5 | 1877 | } |
b1f3366b | 1878 | if (val & I40E_VF_ARQLEN1_ARQOVFL_MASK) { |
912257e5 | 1879 | dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n"); |
b1f3366b | 1880 | val &= ~I40E_VF_ARQLEN1_ARQOVFL_MASK; |
912257e5 | 1881 | } |
b1f3366b | 1882 | if (val & I40E_VF_ARQLEN1_ARQCRIT_MASK) { |
912257e5 | 1883 | dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n"); |
b1f3366b | 1884 | val &= ~I40E_VF_ARQLEN1_ARQCRIT_MASK; |
912257e5 MW |
1885 | } |
1886 | if (oldval != val) | |
1887 | wr32(hw, hw->aq.arq.len, val); | |
1888 | ||
1889 | val = rd32(hw, hw->aq.asq.len); | |
1890 | oldval = val; | |
b1f3366b | 1891 | if (val & I40E_VF_ATQLEN1_ATQVFE_MASK) { |
912257e5 | 1892 | dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n"); |
b1f3366b | 1893 | val &= ~I40E_VF_ATQLEN1_ATQVFE_MASK; |
912257e5 | 1894 | } |
b1f3366b | 1895 | if (val & I40E_VF_ATQLEN1_ATQOVFL_MASK) { |
912257e5 | 1896 | dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n"); |
b1f3366b | 1897 | val &= ~I40E_VF_ATQLEN1_ATQOVFL_MASK; |
912257e5 | 1898 | } |
b1f3366b | 1899 | if (val & I40E_VF_ATQLEN1_ATQCRIT_MASK) { |
912257e5 | 1900 | dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n"); |
b1f3366b | 1901 | val &= ~I40E_VF_ATQLEN1_ATQCRIT_MASK; |
912257e5 MW |
1902 | } |
1903 | if (oldval != val) | |
1904 | wr32(hw, hw->aq.asq.len, val); | |
1905 | ||
67c818a1 | 1906 | freedom: |
7235448c MW |
1907 | kfree(event.msg_buf); |
1908 | out: | |
5eae00c5 GR |
1909 | /* re-enable Admin queue interrupt cause */ |
1910 | i40evf_misc_irq_enable(adapter); | |
5eae00c5 GR |
1911 | } |
1912 | ||
1913 | /** | |
1914 | * i40evf_free_all_tx_resources - Free Tx Resources for All Queues | |
1915 | * @adapter: board private structure | |
1916 | * | |
1917 | * Free all transmit software resources | |
1918 | **/ | |
e284fc88 | 1919 | void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter) |
5eae00c5 GR |
1920 | { |
1921 | int i; | |
1922 | ||
fdb47ae8 MW |
1923 | if (!adapter->tx_rings) |
1924 | return; | |
1925 | ||
cc052927 | 1926 | for (i = 0; i < adapter->num_active_queues; i++) |
0dd438d8 MW |
1927 | if (adapter->tx_rings[i].desc) |
1928 | i40evf_free_tx_resources(&adapter->tx_rings[i]); | |
5eae00c5 GR |
1929 | } |
1930 | ||
1931 | /** | |
1932 | * i40evf_setup_all_tx_resources - allocate all queues Tx resources | |
1933 | * @adapter: board private structure | |
1934 | * | |
1935 | * If this function returns with an error, then it's possible one or | |
1936 | * more of the rings is populated (while the rest are not). It is the | |
1937 | * callers duty to clean those orphaned rings. | |
1938 | * | |
1939 | * Return 0 on success, negative on failure | |
1940 | **/ | |
1941 | static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter) | |
1942 | { | |
1943 | int i, err = 0; | |
1944 | ||
cc052927 | 1945 | for (i = 0; i < adapter->num_active_queues; i++) { |
0dd438d8 MW |
1946 | adapter->tx_rings[i].count = adapter->tx_desc_count; |
1947 | err = i40evf_setup_tx_descriptors(&adapter->tx_rings[i]); | |
5eae00c5 GR |
1948 | if (!err) |
1949 | continue; | |
1950 | dev_err(&adapter->pdev->dev, | |
fb43201f | 1951 | "Allocation for Tx Queue %u failed\n", i); |
5eae00c5 GR |
1952 | break; |
1953 | } | |
1954 | ||
1955 | return err; | |
1956 | } | |
1957 | ||
1958 | /** | |
1959 | * i40evf_setup_all_rx_resources - allocate all queues Rx resources | |
1960 | * @adapter: board private structure | |
1961 | * | |
1962 | * If this function returns with an error, then it's possible one or | |
1963 | * more of the rings is populated (while the rest are not). It is the | |
1964 | * callers duty to clean those orphaned rings. | |
1965 | * | |
1966 | * Return 0 on success, negative on failure | |
1967 | **/ | |
1968 | static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter) | |
1969 | { | |
1970 | int i, err = 0; | |
1971 | ||
cc052927 | 1972 | for (i = 0; i < adapter->num_active_queues; i++) { |
0dd438d8 MW |
1973 | adapter->rx_rings[i].count = adapter->rx_desc_count; |
1974 | err = i40evf_setup_rx_descriptors(&adapter->rx_rings[i]); | |
5eae00c5 GR |
1975 | if (!err) |
1976 | continue; | |
1977 | dev_err(&adapter->pdev->dev, | |
fb43201f | 1978 | "Allocation for Rx Queue %u failed\n", i); |
5eae00c5 GR |
1979 | break; |
1980 | } | |
1981 | return err; | |
1982 | } | |
1983 | ||
1984 | /** | |
1985 | * i40evf_free_all_rx_resources - Free Rx Resources for All Queues | |
1986 | * @adapter: board private structure | |
1987 | * | |
1988 | * Free all receive software resources | |
1989 | **/ | |
e284fc88 | 1990 | void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter) |
5eae00c5 GR |
1991 | { |
1992 | int i; | |
1993 | ||
fdb47ae8 MW |
1994 | if (!adapter->rx_rings) |
1995 | return; | |
1996 | ||
cc052927 | 1997 | for (i = 0; i < adapter->num_active_queues; i++) |
0dd438d8 MW |
1998 | if (adapter->rx_rings[i].desc) |
1999 | i40evf_free_rx_resources(&adapter->rx_rings[i]); | |
5eae00c5 GR |
2000 | } |
2001 | ||
2002 | /** | |
2003 | * i40evf_open - Called when a network interface is made active | |
2004 | * @netdev: network interface device structure | |
2005 | * | |
2006 | * Returns 0 on success, negative value on failure | |
2007 | * | |
2008 | * The open entry point is called when a network interface is made | |
2009 | * active by the system (IFF_UP). At this point all resources needed | |
2010 | * for transmit and receive operations are allocated, the interrupt | |
2011 | * handler is registered with the OS, the watchdog timer is started, | |
2012 | * and the stack is notified that the interface is ready. | |
2013 | **/ | |
2014 | static int i40evf_open(struct net_device *netdev) | |
2015 | { | |
2016 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2017 | int err; | |
2018 | ||
ef8693eb MW |
2019 | if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) { |
2020 | dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n"); | |
2021 | return -EIO; | |
2022 | } | |
209dc4da MW |
2023 | |
2024 | if (adapter->state != __I40EVF_DOWN) | |
5eae00c5 GR |
2025 | return -EBUSY; |
2026 | ||
2027 | /* allocate transmit descriptors */ | |
2028 | err = i40evf_setup_all_tx_resources(adapter); | |
2029 | if (err) | |
2030 | goto err_setup_tx; | |
2031 | ||
2032 | /* allocate receive descriptors */ | |
2033 | err = i40evf_setup_all_rx_resources(adapter); | |
2034 | if (err) | |
2035 | goto err_setup_rx; | |
2036 | ||
2037 | /* clear any pending interrupts, may auto mask */ | |
2038 | err = i40evf_request_traffic_irqs(adapter, netdev->name); | |
2039 | if (err) | |
2040 | goto err_req_irq; | |
2041 | ||
44151cd3 | 2042 | i40evf_add_filter(adapter, adapter->hw.mac.addr); |
5eae00c5 GR |
2043 | i40evf_configure(adapter); |
2044 | ||
2045 | err = i40evf_up_complete(adapter); | |
2046 | if (err) | |
2047 | goto err_req_irq; | |
2048 | ||
2049 | i40evf_irq_enable(adapter, true); | |
2050 | ||
2051 | return 0; | |
2052 | ||
2053 | err_req_irq: | |
2054 | i40evf_down(adapter); | |
2055 | i40evf_free_traffic_irqs(adapter); | |
2056 | err_setup_rx: | |
2057 | i40evf_free_all_rx_resources(adapter); | |
2058 | err_setup_tx: | |
2059 | i40evf_free_all_tx_resources(adapter); | |
2060 | ||
2061 | return err; | |
2062 | } | |
2063 | ||
2064 | /** | |
2065 | * i40evf_close - Disables a network interface | |
2066 | * @netdev: network interface device structure | |
2067 | * | |
2068 | * Returns 0, this is not allowed to fail | |
2069 | * | |
2070 | * The close entry point is called when an interface is de-activated | |
2071 | * by the OS. The hardware is still under the drivers control, but | |
2072 | * needs to be disabled. All IRQs except vector 0 (reserved for admin queue) | |
2073 | * are freed, along with all transmit and receive resources. | |
2074 | **/ | |
2075 | static int i40evf_close(struct net_device *netdev) | |
2076 | { | |
2077 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2078 | ||
209dc4da | 2079 | if (adapter->state <= __I40EVF_DOWN_PENDING) |
ef8693eb MW |
2080 | return 0; |
2081 | ||
ef8693eb | 2082 | |
5eae00c5 GR |
2083 | set_bit(__I40E_DOWN, &adapter->vsi.state); |
2084 | ||
2085 | i40evf_down(adapter); | |
209dc4da | 2086 | adapter->state = __I40EVF_DOWN_PENDING; |
5eae00c5 GR |
2087 | i40evf_free_traffic_irqs(adapter); |
2088 | ||
5eae00c5 GR |
2089 | return 0; |
2090 | } | |
2091 | ||
2092 | /** | |
2093 | * i40evf_get_stats - Get System Network Statistics | |
2094 | * @netdev: network interface device structure | |
2095 | * | |
2096 | * Returns the address of the device statistics structure. | |
2097 | * The statistics are actually updated from the timer callback. | |
2098 | **/ | |
2099 | static struct net_device_stats *i40evf_get_stats(struct net_device *netdev) | |
2100 | { | |
2101 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2102 | ||
2103 | /* only return the current stats */ | |
2104 | return &adapter->net_stats; | |
2105 | } | |
2106 | ||
5eae00c5 GR |
2107 | /** |
2108 | * i40evf_change_mtu - Change the Maximum Transfer Unit | |
2109 | * @netdev: network interface device structure | |
2110 | * @new_mtu: new value for maximum frame size | |
2111 | * | |
2112 | * Returns 0 on success, negative on failure | |
2113 | **/ | |
2114 | static int i40evf_change_mtu(struct net_device *netdev, int new_mtu) | |
2115 | { | |
2116 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2117 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
2118 | ||
2119 | if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER)) | |
2120 | return -EINVAL; | |
2121 | ||
5eae00c5 | 2122 | netdev->mtu = new_mtu; |
67c818a1 MW |
2123 | adapter->flags |= I40EVF_FLAG_RESET_NEEDED; |
2124 | schedule_work(&adapter->reset_task); | |
2125 | ||
5eae00c5 GR |
2126 | return 0; |
2127 | } | |
2128 | ||
c4445aed MW |
2129 | #define I40EVF_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_TX |\ |
2130 | NETIF_F_HW_VLAN_CTAG_RX |\ | |
2131 | NETIF_F_HW_VLAN_CTAG_FILTER) | |
2132 | ||
2133 | /** | |
2134 | * i40evf_fix_features - fix up the netdev feature bits | |
2135 | * @netdev: our net device | |
2136 | * @features: desired feature bits | |
2137 | * | |
2138 | * Returns fixed-up features bits | |
2139 | **/ | |
2140 | static netdev_features_t i40evf_fix_features(struct net_device *netdev, | |
2141 | netdev_features_t features) | |
2142 | { | |
2143 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2144 | ||
2145 | features &= ~I40EVF_VLAN_FEATURES; | |
2146 | if (adapter->vf_res->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_VLAN) | |
2147 | features |= I40EVF_VLAN_FEATURES; | |
2148 | return features; | |
2149 | } | |
2150 | ||
5eae00c5 GR |
2151 | static const struct net_device_ops i40evf_netdev_ops = { |
2152 | .ndo_open = i40evf_open, | |
2153 | .ndo_stop = i40evf_close, | |
2154 | .ndo_start_xmit = i40evf_xmit_frame, | |
2155 | .ndo_get_stats = i40evf_get_stats, | |
2156 | .ndo_set_rx_mode = i40evf_set_rx_mode, | |
2157 | .ndo_validate_addr = eth_validate_addr, | |
2158 | .ndo_set_mac_address = i40evf_set_mac, | |
2159 | .ndo_change_mtu = i40evf_change_mtu, | |
2160 | .ndo_tx_timeout = i40evf_tx_timeout, | |
2161 | .ndo_vlan_rx_add_vid = i40evf_vlan_rx_add_vid, | |
2162 | .ndo_vlan_rx_kill_vid = i40evf_vlan_rx_kill_vid, | |
c4445aed | 2163 | .ndo_fix_features = i40evf_fix_features, |
7709b4c1 AD |
2164 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2165 | .ndo_poll_controller = i40evf_netpoll, | |
2166 | #endif | |
5eae00c5 GR |
2167 | }; |
2168 | ||
2169 | /** | |
2170 | * i40evf_check_reset_complete - check that VF reset is complete | |
2171 | * @hw: pointer to hw struct | |
2172 | * | |
2173 | * Returns 0 if device is ready to use, or -EBUSY if it's in reset. | |
2174 | **/ | |
2175 | static int i40evf_check_reset_complete(struct i40e_hw *hw) | |
2176 | { | |
2177 | u32 rstat; | |
2178 | int i; | |
2179 | ||
2180 | for (i = 0; i < 100; i++) { | |
fd35886a AS |
2181 | rstat = rd32(hw, I40E_VFGEN_RSTAT) & |
2182 | I40E_VFGEN_RSTAT_VFR_STATE_MASK; | |
2183 | if ((rstat == I40E_VFR_VFACTIVE) || | |
2184 | (rstat == I40E_VFR_COMPLETED)) | |
5eae00c5 | 2185 | return 0; |
f98a2006 | 2186 | usleep_range(10, 20); |
5eae00c5 GR |
2187 | } |
2188 | return -EBUSY; | |
2189 | } | |
2190 | ||
e6d038de MW |
2191 | /** |
2192 | * i40evf_process_config - Process the config information we got from the PF | |
2193 | * @adapter: board private structure | |
2194 | * | |
2195 | * Verify that we have a valid config struct, and set up our netdev features | |
2196 | * and our VSI struct. | |
2197 | **/ | |
2198 | int i40evf_process_config(struct i40evf_adapter *adapter) | |
2199 | { | |
ba6cc7f6 | 2200 | struct i40e_virtchnl_vf_resource *vfres = adapter->vf_res; |
e6d038de | 2201 | struct net_device *netdev = adapter->netdev; |
43a3d9ba | 2202 | struct i40e_vsi *vsi = &adapter->vsi; |
e6d038de MW |
2203 | int i; |
2204 | ||
2205 | /* got VF config message back from PF, now we can parse it */ | |
ba6cc7f6 MW |
2206 | for (i = 0; i < vfres->num_vsis; i++) { |
2207 | if (vfres->vsi_res[i].vsi_type == I40E_VSI_SRIOV) | |
2208 | adapter->vsi_res = &vfres->vsi_res[i]; | |
e6d038de MW |
2209 | } |
2210 | if (!adapter->vsi_res) { | |
2211 | dev_err(&adapter->pdev->dev, "No LAN VSI found\n"); | |
2212 | return -ENODEV; | |
2213 | } | |
2214 | ||
b0fe3306 AD |
2215 | netdev->hw_enc_features |= NETIF_F_SG | |
2216 | NETIF_F_IP_CSUM | | |
2217 | NETIF_F_IPV6_CSUM | | |
2218 | NETIF_F_HIGHDMA | | |
2219 | NETIF_F_SOFT_FEATURES | | |
2220 | NETIF_F_TSO | | |
2221 | NETIF_F_TSO_ECN | | |
2222 | NETIF_F_TSO6 | | |
2223 | NETIF_F_GSO_GRE | | |
577389a5 AD |
2224 | NETIF_F_GSO_IPIP | |
2225 | NETIF_F_GSO_SIT | | |
b0fe3306 AD |
2226 | NETIF_F_GSO_UDP_TUNNEL | |
2227 | NETIF_F_GSO_UDP_TUNNEL_CSUM | | |
2228 | NETIF_F_SCTP_CRC | | |
2229 | NETIF_F_RXHASH | | |
2230 | NETIF_F_RXCSUM | | |
2231 | 0; | |
2232 | ||
2233 | if (!(adapter->flags & I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE)) | |
2234 | netdev->hw_enc_features ^= NETIF_F_GSO_UDP_TUNNEL_CSUM; | |
2235 | ||
2236 | /* record features VLANs can make use of */ | |
2237 | netdev->vlan_features |= netdev->hw_enc_features; | |
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; | |
2245 | ||
2246 | /* disable VLAN features if not supported */ | |
2247 | if (!(vfres->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_VLAN)) | |
2248 | netdev->features ^= I40EVF_VLAN_FEATURES; | |
e6d038de MW |
2249 | |
2250 | adapter->vsi.id = adapter->vsi_res->vsi_id; | |
2251 | ||
2252 | adapter->vsi.back = adapter; | |
2253 | adapter->vsi.base_vector = 1; | |
2254 | adapter->vsi.work_limit = I40E_DEFAULT_IRQ_WORK; | |
2255 | adapter->vsi.rx_itr_setting = (I40E_ITR_DYNAMIC | | |
2256 | ITR_REG_TO_USEC(I40E_ITR_RX_DEF)); | |
2257 | adapter->vsi.tx_itr_setting = (I40E_ITR_DYNAMIC | | |
2258 | ITR_REG_TO_USEC(I40E_ITR_TX_DEF)); | |
43a3d9ba MW |
2259 | vsi->netdev = adapter->netdev; |
2260 | vsi->qs_handle = adapter->vsi_res->qset_handle; | |
2261 | if (vfres->vf_offload_flags & I40E_VIRTCHNL_VF_OFFLOAD_RSS_PF) { | |
2262 | adapter->rss_key_size = vfres->rss_key_size; | |
2263 | adapter->rss_lut_size = vfres->rss_lut_size; | |
2264 | } else { | |
2265 | adapter->rss_key_size = I40EVF_HKEY_ARRAY_SIZE; | |
2266 | adapter->rss_lut_size = I40EVF_HLUT_ARRAY_SIZE; | |
2267 | } | |
2268 | ||
e6d038de MW |
2269 | return 0; |
2270 | } | |
2271 | ||
5eae00c5 GR |
2272 | /** |
2273 | * i40evf_init_task - worker thread to perform delayed initialization | |
2274 | * @work: pointer to work_struct containing our data | |
2275 | * | |
2276 | * This task completes the work that was begun in probe. Due to the nature | |
2277 | * of VF-PF communications, we may need to wait tens of milliseconds to get | |
dbedd44e | 2278 | * responses back from the PF. Rather than busy-wait in probe and bog down the |
5eae00c5 GR |
2279 | * whole system, we'll do it in a task so we can sleep. |
2280 | * This task only runs during driver init. Once we've established | |
2281 | * communications with the PF driver and set up our netdev, the watchdog | |
2282 | * takes over. | |
2283 | **/ | |
2284 | static void i40evf_init_task(struct work_struct *work) | |
2285 | { | |
2286 | struct i40evf_adapter *adapter = container_of(work, | |
2287 | struct i40evf_adapter, | |
2288 | init_task.work); | |
2289 | struct net_device *netdev = adapter->netdev; | |
5eae00c5 GR |
2290 | struct i40e_hw *hw = &adapter->hw; |
2291 | struct pci_dev *pdev = adapter->pdev; | |
e6d038de | 2292 | int err, bufsz; |
5eae00c5 GR |
2293 | |
2294 | switch (adapter->state) { | |
2295 | case __I40EVF_STARTUP: | |
2296 | /* driver loaded, probe complete */ | |
ef8693eb MW |
2297 | adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED; |
2298 | adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; | |
5eae00c5 GR |
2299 | err = i40e_set_mac_type(hw); |
2300 | if (err) { | |
c2a137cb MW |
2301 | dev_err(&pdev->dev, "Failed to set MAC type (%d)\n", |
2302 | err); | |
2619ef47 | 2303 | goto err; |
5eae00c5 GR |
2304 | } |
2305 | err = i40evf_check_reset_complete(hw); | |
2306 | if (err) { | |
0d9c7ea8 | 2307 | dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n", |
75a64435 | 2308 | err); |
5eae00c5 GR |
2309 | goto err; |
2310 | } | |
2311 | hw->aq.num_arq_entries = I40EVF_AQ_LEN; | |
2312 | hw->aq.num_asq_entries = I40EVF_AQ_LEN; | |
2313 | hw->aq.arq_buf_size = I40EVF_MAX_AQ_BUF_SIZE; | |
2314 | hw->aq.asq_buf_size = I40EVF_MAX_AQ_BUF_SIZE; | |
2315 | ||
2316 | err = i40evf_init_adminq(hw); | |
2317 | if (err) { | |
c2a137cb MW |
2318 | dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n", |
2319 | err); | |
5eae00c5 GR |
2320 | goto err; |
2321 | } | |
2322 | err = i40evf_send_api_ver(adapter); | |
2323 | if (err) { | |
10bdd67b | 2324 | dev_err(&pdev->dev, "Unable to send to PF (%d)\n", err); |
5eae00c5 GR |
2325 | i40evf_shutdown_adminq(hw); |
2326 | goto err; | |
2327 | } | |
2328 | adapter->state = __I40EVF_INIT_VERSION_CHECK; | |
2329 | goto restart; | |
5eae00c5 | 2330 | case __I40EVF_INIT_VERSION_CHECK: |
10bdd67b | 2331 | if (!i40evf_asq_done(hw)) { |
80e72893 | 2332 | dev_err(&pdev->dev, "Admin queue command never completed\n"); |
906a6937 MW |
2333 | i40evf_shutdown_adminq(hw); |
2334 | adapter->state = __I40EVF_STARTUP; | |
5eae00c5 | 2335 | goto err; |
10bdd67b | 2336 | } |
5eae00c5 GR |
2337 | |
2338 | /* aq msg sent, awaiting reply */ | |
2339 | err = i40evf_verify_api_ver(adapter); | |
2340 | if (err) { | |
d4f82fd3 | 2341 | if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK) |
56f9920a | 2342 | err = i40evf_send_api_ver(adapter); |
ee1693e5 MW |
2343 | else |
2344 | dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n", | |
2345 | adapter->pf_version.major, | |
2346 | adapter->pf_version.minor, | |
2347 | I40E_VIRTCHNL_VERSION_MAJOR, | |
2348 | I40E_VIRTCHNL_VERSION_MINOR); | |
5eae00c5 GR |
2349 | goto err; |
2350 | } | |
2351 | err = i40evf_send_vf_config_msg(adapter); | |
2352 | if (err) { | |
3f2ab172 | 2353 | dev_err(&pdev->dev, "Unable to send config request (%d)\n", |
5eae00c5 GR |
2354 | err); |
2355 | goto err; | |
2356 | } | |
2357 | adapter->state = __I40EVF_INIT_GET_RESOURCES; | |
2358 | goto restart; | |
5eae00c5 GR |
2359 | case __I40EVF_INIT_GET_RESOURCES: |
2360 | /* aq msg sent, awaiting reply */ | |
2361 | if (!adapter->vf_res) { | |
2362 | bufsz = sizeof(struct i40e_virtchnl_vf_resource) + | |
2363 | (I40E_MAX_VF_VSI * | |
2364 | sizeof(struct i40e_virtchnl_vsi_resource)); | |
2365 | adapter->vf_res = kzalloc(bufsz, GFP_KERNEL); | |
c2a137cb | 2366 | if (!adapter->vf_res) |
5eae00c5 | 2367 | goto err; |
5eae00c5 GR |
2368 | } |
2369 | err = i40evf_get_vf_config(adapter); | |
906a6937 | 2370 | if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK) { |
906a6937 MW |
2371 | err = i40evf_send_vf_config_msg(adapter); |
2372 | goto err; | |
e743072f MW |
2373 | } else if (err == I40E_ERR_PARAM) { |
2374 | /* We only get ERR_PARAM if the device is in a very bad | |
2375 | * state or if we've been disabled for previous bad | |
2376 | * behavior. Either way, we're done now. | |
2377 | */ | |
2378 | i40evf_shutdown_adminq(hw); | |
2379 | dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n"); | |
2380 | return; | |
906a6937 | 2381 | } |
5eae00c5 | 2382 | if (err) { |
c2a137cb MW |
2383 | dev_err(&pdev->dev, "Unable to get VF config (%d)\n", |
2384 | err); | |
5eae00c5 GR |
2385 | goto err_alloc; |
2386 | } | |
2387 | adapter->state = __I40EVF_INIT_SW; | |
2388 | break; | |
2389 | default: | |
2390 | goto err_alloc; | |
2391 | } | |
f608e6a6 AD |
2392 | |
2393 | if (hw->mac.type == I40E_MAC_X722_VF) | |
2394 | adapter->flags |= I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE; | |
2395 | ||
e6d038de | 2396 | if (i40evf_process_config(adapter)) |
5eae00c5 | 2397 | goto err_alloc; |
e6d038de | 2398 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; |
5eae00c5 GR |
2399 | |
2400 | adapter->flags |= I40EVF_FLAG_RX_CSUM_ENABLED; | |
00e5ec4b MW |
2401 | adapter->flags |= I40EVF_FLAG_RX_1BUF_CAPABLE; |
2402 | adapter->flags |= I40EVF_FLAG_RX_PS_CAPABLE; | |
2403 | ||
2404 | /* Default to single buffer rx, can be changed through ethtool. */ | |
2405 | adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED; | |
5eae00c5 | 2406 | |
5eae00c5 GR |
2407 | netdev->netdev_ops = &i40evf_netdev_ops; |
2408 | i40evf_set_ethtool_ops(netdev); | |
2409 | netdev->watchdog_timeo = 5 * HZ; | |
3415e8ce | 2410 | |
5eae00c5 | 2411 | if (!is_valid_ether_addr(adapter->hw.mac.addr)) { |
b34f90e7 | 2412 | dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n", |
c2a137cb | 2413 | adapter->hw.mac.addr); |
14e52ee2 MW |
2414 | eth_hw_addr_random(netdev); |
2415 | ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr); | |
2416 | } else { | |
2417 | adapter->flags |= I40EVF_FLAG_ADDR_SET_BY_PF; | |
2418 | ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr); | |
2419 | ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr); | |
5eae00c5 | 2420 | } |
5eae00c5 | 2421 | |
5eae00c5 GR |
2422 | init_timer(&adapter->watchdog_timer); |
2423 | adapter->watchdog_timer.function = &i40evf_watchdog_timer; | |
2424 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
2425 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
2426 | ||
cc052927 MW |
2427 | adapter->num_active_queues = min_t(int, |
2428 | adapter->vsi_res->num_queue_pairs, | |
2429 | (int)(num_online_cpus())); | |
d732a184 MW |
2430 | adapter->tx_desc_count = I40EVF_DEFAULT_TXD; |
2431 | adapter->rx_desc_count = I40EVF_DEFAULT_RXD; | |
5eae00c5 GR |
2432 | err = i40evf_init_interrupt_scheme(adapter); |
2433 | if (err) | |
2434 | goto err_sw_init; | |
2435 | i40evf_map_rings_to_vectors(adapter); | |
f6d83d13 ASJ |
2436 | if (adapter->vf_res->vf_offload_flags & |
2437 | I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) | |
2438 | adapter->flags |= I40EVF_FLAG_WB_ON_ITR_CAPABLE; | |
2439 | ||
5eae00c5 GR |
2440 | err = i40evf_request_misc_irq(adapter); |
2441 | if (err) | |
2442 | goto err_sw_init; | |
2443 | ||
2444 | netif_carrier_off(netdev); | |
2445 | ||
ef8693eb MW |
2446 | if (!adapter->netdev_registered) { |
2447 | err = register_netdev(netdev); | |
2448 | if (err) | |
2449 | goto err_register; | |
2450 | } | |
5eae00c5 GR |
2451 | |
2452 | adapter->netdev_registered = true; | |
2453 | ||
2454 | netif_tx_stop_all_queues(netdev); | |
2455 | ||
b34f90e7 | 2456 | dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr); |
5eae00c5 GR |
2457 | if (netdev->features & NETIF_F_GRO) |
2458 | dev_info(&pdev->dev, "GRO is enabled\n"); | |
2459 | ||
5eae00c5 GR |
2460 | adapter->state = __I40EVF_DOWN; |
2461 | set_bit(__I40E_DOWN, &adapter->vsi.state); | |
2462 | i40evf_misc_irq_enable(adapter); | |
e25d00b8 | 2463 | |
43a3d9ba MW |
2464 | adapter->rss_key = kzalloc(adapter->rss_key_size, GFP_KERNEL); |
2465 | adapter->rss_lut = kzalloc(adapter->rss_lut_size, GFP_KERNEL); | |
2466 | if (!adapter->rss_key || !adapter->rss_lut) | |
2467 | goto err_mem; | |
2468 | ||
e25d00b8 ASJ |
2469 | if (RSS_AQ(adapter)) { |
2470 | adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_RSS; | |
2471 | mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); | |
2472 | } else { | |
96a81986 | 2473 | i40evf_init_rss(adapter); |
e25d00b8 | 2474 | } |
5eae00c5 GR |
2475 | return; |
2476 | restart: | |
3f7e5c33 | 2477 | schedule_delayed_work(&adapter->init_task, msecs_to_jiffies(30)); |
5eae00c5 | 2478 | return; |
43a3d9ba MW |
2479 | err_mem: |
2480 | i40evf_free_rss(adapter); | |
5eae00c5 GR |
2481 | err_register: |
2482 | i40evf_free_misc_irq(adapter); | |
2483 | err_sw_init: | |
2484 | i40evf_reset_interrupt_capability(adapter); | |
5eae00c5 GR |
2485 | err_alloc: |
2486 | kfree(adapter->vf_res); | |
2487 | adapter->vf_res = NULL; | |
2488 | err: | |
2489 | /* Things went into the weeds, so try again later */ | |
2490 | if (++adapter->aq_wait_count > I40EVF_AQ_MAX_ERR) { | |
b9029e94 | 2491 | dev_err(&pdev->dev, "Failed to communicate with PF; waiting before retry\n"); |
ef8693eb | 2492 | adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED; |
b9029e94 MW |
2493 | i40evf_shutdown_adminq(hw); |
2494 | adapter->state = __I40EVF_STARTUP; | |
2495 | schedule_delayed_work(&adapter->init_task, HZ * 5); | |
2496 | return; | |
5eae00c5 | 2497 | } |
3f7e5c33 | 2498 | schedule_delayed_work(&adapter->init_task, HZ); |
5eae00c5 GR |
2499 | } |
2500 | ||
2501 | /** | |
2502 | * i40evf_shutdown - Shutdown the device in preparation for a reboot | |
2503 | * @pdev: pci device structure | |
2504 | **/ | |
2505 | static void i40evf_shutdown(struct pci_dev *pdev) | |
2506 | { | |
2507 | struct net_device *netdev = pci_get_drvdata(pdev); | |
00293fdc | 2508 | struct i40evf_adapter *adapter = netdev_priv(netdev); |
5eae00c5 GR |
2509 | |
2510 | netif_device_detach(netdev); | |
2511 | ||
2512 | if (netif_running(netdev)) | |
2513 | i40evf_close(netdev); | |
2514 | ||
00293fdc MW |
2515 | /* Prevent the watchdog from running. */ |
2516 | adapter->state = __I40EVF_REMOVE; | |
2517 | adapter->aq_required = 0; | |
00293fdc | 2518 | |
5eae00c5 GR |
2519 | #ifdef CONFIG_PM |
2520 | pci_save_state(pdev); | |
2521 | ||
2522 | #endif | |
2523 | pci_disable_device(pdev); | |
2524 | } | |
2525 | ||
2526 | /** | |
2527 | * i40evf_probe - Device Initialization Routine | |
2528 | * @pdev: PCI device information struct | |
2529 | * @ent: entry in i40evf_pci_tbl | |
2530 | * | |
2531 | * Returns 0 on success, negative on failure | |
2532 | * | |
2533 | * i40evf_probe initializes an adapter identified by a pci_dev structure. | |
2534 | * The OS initialization, configuring of the adapter private structure, | |
2535 | * and a hardware reset occur. | |
2536 | **/ | |
2537 | static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
2538 | { | |
2539 | struct net_device *netdev; | |
2540 | struct i40evf_adapter *adapter = NULL; | |
2541 | struct i40e_hw *hw = NULL; | |
dbbd8111 | 2542 | int err; |
5eae00c5 GR |
2543 | |
2544 | err = pci_enable_device(pdev); | |
2545 | if (err) | |
2546 | return err; | |
2547 | ||
6494294f | 2548 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
6494294f | 2549 | if (err) { |
e3e3bfdd JS |
2550 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
2551 | if (err) { | |
2552 | dev_err(&pdev->dev, | |
2553 | "DMA configuration failed: 0x%x\n", err); | |
2554 | goto err_dma; | |
2555 | } | |
5eae00c5 GR |
2556 | } |
2557 | ||
2558 | err = pci_request_regions(pdev, i40evf_driver_name); | |
2559 | if (err) { | |
2560 | dev_err(&pdev->dev, | |
2561 | "pci_request_regions failed 0x%x\n", err); | |
2562 | goto err_pci_reg; | |
2563 | } | |
2564 | ||
2565 | pci_enable_pcie_error_reporting(pdev); | |
2566 | ||
2567 | pci_set_master(pdev); | |
2568 | ||
1255b7a1 | 2569 | netdev = alloc_etherdev_mq(sizeof(struct i40evf_adapter), MAX_QUEUES); |
5eae00c5 GR |
2570 | if (!netdev) { |
2571 | err = -ENOMEM; | |
2572 | goto err_alloc_etherdev; | |
2573 | } | |
2574 | ||
2575 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2576 | ||
2577 | pci_set_drvdata(pdev, netdev); | |
2578 | adapter = netdev_priv(netdev); | |
5eae00c5 GR |
2579 | |
2580 | adapter->netdev = netdev; | |
2581 | adapter->pdev = pdev; | |
2582 | ||
2583 | hw = &adapter->hw; | |
2584 | hw->back = adapter; | |
2585 | ||
41a1d04b | 2586 | adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1; |
5eae00c5 GR |
2587 | adapter->state = __I40EVF_STARTUP; |
2588 | ||
2589 | /* Call save state here because it relies on the adapter struct. */ | |
2590 | pci_save_state(pdev); | |
2591 | ||
2592 | hw->hw_addr = ioremap(pci_resource_start(pdev, 0), | |
2593 | pci_resource_len(pdev, 0)); | |
2594 | if (!hw->hw_addr) { | |
2595 | err = -EIO; | |
2596 | goto err_ioremap; | |
2597 | } | |
2598 | hw->vendor_id = pdev->vendor; | |
2599 | hw->device_id = pdev->device; | |
2600 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
2601 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2602 | hw->subsystem_device_id = pdev->subsystem_device; | |
2603 | hw->bus.device = PCI_SLOT(pdev->devfn); | |
2604 | hw->bus.func = PCI_FUNC(pdev->devfn); | |
2605 | ||
8ddb3326 JB |
2606 | /* set up the locks for the AQ, do this only once in probe |
2607 | * and destroy them only once in remove | |
2608 | */ | |
2609 | mutex_init(&hw->aq.asq_mutex); | |
2610 | mutex_init(&hw->aq.arq_mutex); | |
2611 | ||
8bb1a540 SK |
2612 | INIT_LIST_HEAD(&adapter->mac_filter_list); |
2613 | INIT_LIST_HEAD(&adapter->vlan_filter_list); | |
2614 | ||
5eae00c5 GR |
2615 | INIT_WORK(&adapter->reset_task, i40evf_reset_task); |
2616 | INIT_WORK(&adapter->adminq_task, i40evf_adminq_task); | |
2617 | INIT_WORK(&adapter->watchdog_task, i40evf_watchdog_task); | |
2618 | INIT_DELAYED_WORK(&adapter->init_task, i40evf_init_task); | |
9b32b0b5 MW |
2619 | schedule_delayed_work(&adapter->init_task, |
2620 | msecs_to_jiffies(5 * (pdev->devfn & 0x07))); | |
5eae00c5 GR |
2621 | |
2622 | return 0; | |
2623 | ||
2624 | err_ioremap: | |
2625 | free_netdev(netdev); | |
2626 | err_alloc_etherdev: | |
2627 | pci_release_regions(pdev); | |
2628 | err_pci_reg: | |
2629 | err_dma: | |
2630 | pci_disable_device(pdev); | |
2631 | return err; | |
2632 | } | |
2633 | ||
2634 | #ifdef CONFIG_PM | |
2635 | /** | |
2636 | * i40evf_suspend - Power management suspend routine | |
2637 | * @pdev: PCI device information struct | |
2638 | * @state: unused | |
2639 | * | |
2640 | * Called when the system (VM) is entering sleep/suspend. | |
2641 | **/ | |
2642 | static int i40evf_suspend(struct pci_dev *pdev, pm_message_t state) | |
2643 | { | |
2644 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2645 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2646 | int retval = 0; | |
2647 | ||
2648 | netif_device_detach(netdev); | |
2649 | ||
2650 | if (netif_running(netdev)) { | |
2651 | rtnl_lock(); | |
2652 | i40evf_down(adapter); | |
2653 | rtnl_unlock(); | |
2654 | } | |
2655 | i40evf_free_misc_irq(adapter); | |
2656 | i40evf_reset_interrupt_capability(adapter); | |
2657 | ||
2658 | retval = pci_save_state(pdev); | |
2659 | if (retval) | |
2660 | return retval; | |
2661 | ||
2662 | pci_disable_device(pdev); | |
2663 | ||
2664 | return 0; | |
2665 | } | |
2666 | ||
2667 | /** | |
dbedd44e | 2668 | * i40evf_resume - Power management resume routine |
5eae00c5 GR |
2669 | * @pdev: PCI device information struct |
2670 | * | |
2671 | * Called when the system (VM) is resumed from sleep/suspend. | |
2672 | **/ | |
2673 | static int i40evf_resume(struct pci_dev *pdev) | |
2674 | { | |
2675 | struct i40evf_adapter *adapter = pci_get_drvdata(pdev); | |
2676 | struct net_device *netdev = adapter->netdev; | |
2677 | u32 err; | |
2678 | ||
2679 | pci_set_power_state(pdev, PCI_D0); | |
2680 | pci_restore_state(pdev); | |
2681 | /* pci_restore_state clears dev->state_saved so call | |
2682 | * pci_save_state to restore it. | |
2683 | */ | |
2684 | pci_save_state(pdev); | |
2685 | ||
2686 | err = pci_enable_device_mem(pdev); | |
2687 | if (err) { | |
2688 | dev_err(&pdev->dev, "Cannot enable PCI device from suspend.\n"); | |
2689 | return err; | |
2690 | } | |
2691 | pci_set_master(pdev); | |
2692 | ||
2693 | rtnl_lock(); | |
2694 | err = i40evf_set_interrupt_capability(adapter); | |
2695 | if (err) { | |
f2a1c368 | 2696 | rtnl_unlock(); |
5eae00c5 GR |
2697 | dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n"); |
2698 | return err; | |
2699 | } | |
2700 | err = i40evf_request_misc_irq(adapter); | |
2701 | rtnl_unlock(); | |
2702 | if (err) { | |
2703 | dev_err(&pdev->dev, "Cannot get interrupt vector.\n"); | |
2704 | return err; | |
2705 | } | |
2706 | ||
2707 | schedule_work(&adapter->reset_task); | |
2708 | ||
2709 | netif_device_attach(netdev); | |
2710 | ||
2711 | return err; | |
2712 | } | |
2713 | ||
2714 | #endif /* CONFIG_PM */ | |
2715 | /** | |
2716 | * i40evf_remove - Device Removal Routine | |
2717 | * @pdev: PCI device information struct | |
2718 | * | |
2719 | * i40evf_remove is called by the PCI subsystem to alert the driver | |
2720 | * that it should release a PCI device. The could be caused by a | |
2721 | * Hot-Plug event, or because the driver is going to be removed from | |
2722 | * memory. | |
2723 | **/ | |
2724 | static void i40evf_remove(struct pci_dev *pdev) | |
2725 | { | |
2726 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2727 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
6ba36a24 | 2728 | struct i40evf_mac_filter *f, *ftmp; |
5eae00c5 GR |
2729 | struct i40e_hw *hw = &adapter->hw; |
2730 | ||
2731 | cancel_delayed_work_sync(&adapter->init_task); | |
ef8693eb | 2732 | cancel_work_sync(&adapter->reset_task); |
5eae00c5 GR |
2733 | |
2734 | if (adapter->netdev_registered) { | |
2735 | unregister_netdev(netdev); | |
2736 | adapter->netdev_registered = false; | |
2737 | } | |
53d0b3ae | 2738 | |
f4a71881 | 2739 | /* Shut down all the garbage mashers on the detention level */ |
5eae00c5 | 2740 | adapter->state = __I40EVF_REMOVE; |
f4a71881 | 2741 | adapter->aq_required = 0; |
f4a71881 | 2742 | i40evf_request_reset(adapter); |
22ead37f | 2743 | msleep(50); |
f4a71881 MW |
2744 | /* If the FW isn't responding, kick it once, but only once. */ |
2745 | if (!i40evf_asq_done(hw)) { | |
2746 | i40evf_request_reset(adapter); | |
22ead37f | 2747 | msleep(50); |
f4a71881 | 2748 | } |
5eae00c5 | 2749 | |
dbb01c8a | 2750 | if (adapter->msix_entries) { |
5eae00c5 | 2751 | i40evf_misc_irq_disable(adapter); |
5eae00c5 | 2752 | i40evf_free_misc_irq(adapter); |
5eae00c5 | 2753 | i40evf_reset_interrupt_capability(adapter); |
d31944d6 | 2754 | i40evf_free_q_vectors(adapter); |
5eae00c5 GR |
2755 | } |
2756 | ||
e5d17c3e MW |
2757 | if (adapter->watchdog_timer.function) |
2758 | del_timer_sync(&adapter->watchdog_timer); | |
2759 | ||
dbb01c8a MW |
2760 | flush_scheduled_work(); |
2761 | ||
43a3d9ba | 2762 | i40evf_free_rss(adapter); |
66f9af85 | 2763 | |
5eae00c5 GR |
2764 | if (hw->aq.asq.count) |
2765 | i40evf_shutdown_adminq(hw); | |
2766 | ||
8ddb3326 JB |
2767 | /* destroy the locks only once, here */ |
2768 | mutex_destroy(&hw->aq.arq_mutex); | |
2769 | mutex_destroy(&hw->aq.asq_mutex); | |
2770 | ||
5eae00c5 GR |
2771 | iounmap(hw->hw_addr); |
2772 | pci_release_regions(pdev); | |
2773 | ||
e284fc88 MW |
2774 | i40evf_free_all_tx_resources(adapter); |
2775 | i40evf_free_all_rx_resources(adapter); | |
5eae00c5 GR |
2776 | i40evf_free_queues(adapter); |
2777 | kfree(adapter->vf_res); | |
6ba36a24 MW |
2778 | /* If we got removed before an up/down sequence, we've got a filter |
2779 | * hanging out there that we need to get rid of. | |
2780 | */ | |
2781 | list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { | |
2782 | list_del(&f->list); | |
2783 | kfree(f); | |
2784 | } | |
37dfdf37 MW |
2785 | list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) { |
2786 | list_del(&f->list); | |
2787 | kfree(f); | |
2788 | } | |
5eae00c5 GR |
2789 | |
2790 | free_netdev(netdev); | |
2791 | ||
2792 | pci_disable_pcie_error_reporting(pdev); | |
2793 | ||
2794 | pci_disable_device(pdev); | |
2795 | } | |
2796 | ||
2797 | static struct pci_driver i40evf_driver = { | |
2798 | .name = i40evf_driver_name, | |
2799 | .id_table = i40evf_pci_tbl, | |
2800 | .probe = i40evf_probe, | |
2801 | .remove = i40evf_remove, | |
2802 | #ifdef CONFIG_PM | |
2803 | .suspend = i40evf_suspend, | |
2804 | .resume = i40evf_resume, | |
2805 | #endif | |
2806 | .shutdown = i40evf_shutdown, | |
2807 | }; | |
2808 | ||
2809 | /** | |
2810 | * i40e_init_module - Driver Registration Routine | |
2811 | * | |
2812 | * i40e_init_module is the first routine called when the driver is | |
2813 | * loaded. All it does is register with the PCI subsystem. | |
2814 | **/ | |
2815 | static int __init i40evf_init_module(void) | |
2816 | { | |
2817 | int ret; | |
75a64435 | 2818 | |
5eae00c5 | 2819 | pr_info("i40evf: %s - version %s\n", i40evf_driver_string, |
75a64435 | 2820 | i40evf_driver_version); |
5eae00c5 GR |
2821 | |
2822 | pr_info("%s\n", i40evf_copyright); | |
2823 | ||
2803b16c JB |
2824 | i40evf_wq = create_singlethread_workqueue(i40evf_driver_name); |
2825 | if (!i40evf_wq) { | |
2826 | pr_err("%s: Failed to create workqueue\n", i40evf_driver_name); | |
2827 | return -ENOMEM; | |
2828 | } | |
5eae00c5 GR |
2829 | ret = pci_register_driver(&i40evf_driver); |
2830 | return ret; | |
2831 | } | |
2832 | ||
2833 | module_init(i40evf_init_module); | |
2834 | ||
2835 | /** | |
2836 | * i40e_exit_module - Driver Exit Cleanup Routine | |
2837 | * | |
2838 | * i40e_exit_module is called just before the driver is removed | |
2839 | * from memory. | |
2840 | **/ | |
2841 | static void __exit i40evf_exit_module(void) | |
2842 | { | |
2843 | pci_unregister_driver(&i40evf_driver); | |
2803b16c | 2844 | destroy_workqueue(i40evf_wq); |
5eae00c5 GR |
2845 | } |
2846 | ||
2847 | module_exit(i40evf_exit_module); | |
2848 | ||
2849 | /* i40evf_main.c */ |