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5eae00c5 GR |
1 | /******************************************************************************* |
2 | * | |
3 | * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver | |
5b8eb176 | 4 | * Copyright(c) 2013 - 2015 Intel Corporation. |
5eae00c5 GR |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms and conditions of the GNU General Public License, | |
8 | * version 2, as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope it will be useful, but WITHOUT | |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | * more details. | |
14 | * | |
b831607d JB |
15 | * You should have received a copy of the GNU General Public License along |
16 | * with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 | * | |
5eae00c5 GR |
18 | * The full GNU General Public License is included in this distribution in |
19 | * the file called "COPYING". | |
20 | * | |
21 | * Contact Information: | |
22 | * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
23 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
24 | * | |
25 | ******************************************************************************/ | |
26 | ||
27 | #include "i40evf.h" | |
28 | #include "i40e_prototype.h" | |
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[] = | |
0af56f44 | 35 | "Intel(R) XL710/X710 Virtual Function Network Driver"; |
5eae00c5 | 36 | |
164f7393 | 37 | #define DRV_VERSION "1.3.19" |
5eae00c5 GR |
38 | const char i40evf_driver_version[] = DRV_VERSION; |
39 | static const char i40evf_copyright[] = | |
bf41846e | 40 | "Copyright (c) 2013 - 2015 Intel Corporation."; |
5eae00c5 GR |
41 | |
42 | /* i40evf_pci_tbl - PCI Device ID Table | |
43 | * | |
44 | * Wildcard entries (PCI_ANY_ID) should come last | |
45 | * Last entry must be all 0s | |
46 | * | |
47 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
48 | * Class, Class Mask, private data (not used) } | |
49 | */ | |
9baa3c34 | 50 | static const struct pci_device_id i40evf_pci_tbl[] = { |
ab60085e | 51 | {PCI_VDEVICE(INTEL, I40E_DEV_ID_VF), 0}, |
87e6c1d7 | 52 | {PCI_VDEVICE(INTEL, I40E_DEV_ID_X722_VF), 0}, |
5eae00c5 GR |
53 | /* required last entry */ |
54 | {0, } | |
55 | }; | |
56 | ||
57 | MODULE_DEVICE_TABLE(pci, i40evf_pci_tbl); | |
58 | ||
59 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
60 | MODULE_DESCRIPTION("Intel(R) XL710 X710 Virtual Function Network Driver"); | |
61 | MODULE_LICENSE("GPL"); | |
62 | MODULE_VERSION(DRV_VERSION); | |
63 | ||
64 | /** | |
65 | * i40evf_allocate_dma_mem_d - OS specific memory alloc for shared code | |
66 | * @hw: pointer to the HW structure | |
67 | * @mem: ptr to mem struct to fill out | |
68 | * @size: size of memory requested | |
69 | * @alignment: what to align the allocation to | |
70 | **/ | |
71 | i40e_status i40evf_allocate_dma_mem_d(struct i40e_hw *hw, | |
72 | struct i40e_dma_mem *mem, | |
73 | u64 size, u32 alignment) | |
74 | { | |
75 | struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back; | |
76 | ||
77 | if (!mem) | |
78 | return I40E_ERR_PARAM; | |
79 | ||
80 | mem->size = ALIGN(size, alignment); | |
81 | mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size, | |
82 | (dma_addr_t *)&mem->pa, GFP_KERNEL); | |
83 | if (mem->va) | |
84 | return 0; | |
85 | else | |
86 | return I40E_ERR_NO_MEMORY; | |
87 | } | |
88 | ||
89 | /** | |
90 | * i40evf_free_dma_mem_d - OS specific memory free for shared code | |
91 | * @hw: pointer to the HW structure | |
92 | * @mem: ptr to mem struct to free | |
93 | **/ | |
94 | i40e_status i40evf_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem) | |
95 | { | |
96 | struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back; | |
97 | ||
98 | if (!mem || !mem->va) | |
99 | return I40E_ERR_PARAM; | |
100 | dma_free_coherent(&adapter->pdev->dev, mem->size, | |
101 | mem->va, (dma_addr_t)mem->pa); | |
102 | return 0; | |
103 | } | |
104 | ||
105 | /** | |
106 | * i40evf_allocate_virt_mem_d - OS specific memory alloc for shared code | |
107 | * @hw: pointer to the HW structure | |
108 | * @mem: ptr to mem struct to fill out | |
109 | * @size: size of memory requested | |
110 | **/ | |
111 | i40e_status i40evf_allocate_virt_mem_d(struct i40e_hw *hw, | |
112 | struct i40e_virt_mem *mem, u32 size) | |
113 | { | |
114 | if (!mem) | |
115 | return I40E_ERR_PARAM; | |
116 | ||
117 | mem->size = size; | |
118 | mem->va = kzalloc(size, GFP_KERNEL); | |
119 | ||
120 | if (mem->va) | |
121 | return 0; | |
122 | else | |
123 | return I40E_ERR_NO_MEMORY; | |
124 | } | |
125 | ||
126 | /** | |
127 | * i40evf_free_virt_mem_d - OS specific memory free for shared code | |
128 | * @hw: pointer to the HW structure | |
129 | * @mem: ptr to mem struct to free | |
130 | **/ | |
131 | i40e_status i40evf_free_virt_mem_d(struct i40e_hw *hw, | |
132 | struct i40e_virt_mem *mem) | |
133 | { | |
134 | if (!mem) | |
135 | return I40E_ERR_PARAM; | |
136 | ||
137 | /* it's ok to kfree a NULL pointer */ | |
138 | kfree(mem->va); | |
139 | ||
140 | return 0; | |
141 | } | |
142 | ||
143 | /** | |
144 | * i40evf_debug_d - OS dependent version of debug printing | |
145 | * @hw: pointer to the HW structure | |
146 | * @mask: debug level mask | |
147 | * @fmt_str: printf-type format description | |
148 | **/ | |
149 | void i40evf_debug_d(void *hw, u32 mask, char *fmt_str, ...) | |
150 | { | |
151 | char buf[512]; | |
152 | va_list argptr; | |
153 | ||
154 | if (!(mask & ((struct i40e_hw *)hw)->debug_mask)) | |
155 | return; | |
156 | ||
157 | va_start(argptr, fmt_str); | |
158 | vsnprintf(buf, sizeof(buf), fmt_str, argptr); | |
159 | va_end(argptr); | |
160 | ||
161 | /* the debug string is already formatted with a newline */ | |
162 | pr_info("%s", buf); | |
163 | } | |
164 | ||
165 | /** | |
166 | * i40evf_tx_timeout - Respond to a Tx Hang | |
167 | * @netdev: network interface device structure | |
168 | **/ | |
169 | static void i40evf_tx_timeout(struct net_device *netdev) | |
170 | { | |
171 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
172 | ||
173 | adapter->tx_timeout_count++; | |
67c818a1 MW |
174 | if (!(adapter->flags & (I40EVF_FLAG_RESET_PENDING | |
175 | I40EVF_FLAG_RESET_NEEDED))) { | |
3526d800 | 176 | adapter->flags |= I40EVF_FLAG_RESET_NEEDED; |
625777e3 MW |
177 | schedule_work(&adapter->reset_task); |
178 | } | |
5eae00c5 GR |
179 | } |
180 | ||
181 | /** | |
182 | * i40evf_misc_irq_disable - Mask off interrupt generation on the NIC | |
183 | * @adapter: board private structure | |
184 | **/ | |
185 | static void i40evf_misc_irq_disable(struct i40evf_adapter *adapter) | |
186 | { | |
187 | struct i40e_hw *hw = &adapter->hw; | |
75a64435 | 188 | |
5eae00c5 GR |
189 | wr32(hw, I40E_VFINT_DYN_CTL01, 0); |
190 | ||
191 | /* read flush */ | |
192 | rd32(hw, I40E_VFGEN_RSTAT); | |
193 | ||
194 | synchronize_irq(adapter->msix_entries[0].vector); | |
195 | } | |
196 | ||
197 | /** | |
198 | * i40evf_misc_irq_enable - Enable default interrupt generation settings | |
199 | * @adapter: board private structure | |
200 | **/ | |
201 | static void i40evf_misc_irq_enable(struct i40evf_adapter *adapter) | |
202 | { | |
203 | struct i40e_hw *hw = &adapter->hw; | |
75a64435 | 204 | |
5eae00c5 GR |
205 | wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK | |
206 | I40E_VFINT_DYN_CTL01_ITR_INDX_MASK); | |
b1f3366b | 207 | wr32(hw, I40E_VFINT_ICR0_ENA1, I40E_VFINT_ICR0_ENA1_ADMINQ_MASK); |
5eae00c5 GR |
208 | |
209 | /* read flush */ | |
210 | rd32(hw, I40E_VFGEN_RSTAT); | |
211 | } | |
212 | ||
213 | /** | |
214 | * i40evf_irq_disable - Mask off interrupt generation on the NIC | |
215 | * @adapter: board private structure | |
216 | **/ | |
217 | static void i40evf_irq_disable(struct i40evf_adapter *adapter) | |
218 | { | |
219 | int i; | |
220 | struct i40e_hw *hw = &adapter->hw; | |
221 | ||
dbb01c8a MW |
222 | if (!adapter->msix_entries) |
223 | return; | |
224 | ||
5eae00c5 GR |
225 | for (i = 1; i < adapter->num_msix_vectors; i++) { |
226 | wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), 0); | |
227 | synchronize_irq(adapter->msix_entries[i].vector); | |
228 | } | |
229 | /* read flush */ | |
230 | rd32(hw, I40E_VFGEN_RSTAT); | |
5eae00c5 GR |
231 | } |
232 | ||
233 | /** | |
234 | * i40evf_irq_enable_queues - Enable interrupt for specified queues | |
235 | * @adapter: board private structure | |
236 | * @mask: bitmap of queues to enable | |
237 | **/ | |
238 | void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask) | |
239 | { | |
240 | struct i40e_hw *hw = &adapter->hw; | |
241 | int i; | |
242 | ||
243 | for (i = 1; i < adapter->num_msix_vectors; i++) { | |
41a1d04b | 244 | if (mask & BIT(i - 1)) { |
5eae00c5 GR |
245 | wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), |
246 | I40E_VFINT_DYN_CTLN1_INTENA_MASK | | |
97bf75f1 | 247 | I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK | |
b1f3366b | 248 | I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK); |
5eae00c5 GR |
249 | } |
250 | } | |
251 | } | |
252 | ||
253 | /** | |
254 | * i40evf_fire_sw_int - Generate SW interrupt for specified vectors | |
255 | * @adapter: board private structure | |
256 | * @mask: bitmap of vectors to trigger | |
257 | **/ | |
75a64435 | 258 | static void i40evf_fire_sw_int(struct i40evf_adapter *adapter, u32 mask) |
5eae00c5 GR |
259 | { |
260 | struct i40e_hw *hw = &adapter->hw; | |
261 | int i; | |
262 | uint32_t dyn_ctl; | |
263 | ||
164ec1bf MW |
264 | if (mask & 1) { |
265 | dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTL01); | |
b1f3366b | 266 | dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK | |
97bf75f1 | 267 | I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK | |
b1f3366b | 268 | I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK; |
164ec1bf MW |
269 | wr32(hw, I40E_VFINT_DYN_CTL01, dyn_ctl); |
270 | } | |
5eae00c5 | 271 | for (i = 1; i < adapter->num_msix_vectors; i++) { |
41a1d04b | 272 | if (mask & BIT(i)) { |
5eae00c5 | 273 | dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTLN1(i - 1)); |
b1f3366b | 274 | dyn_ctl |= I40E_VFINT_DYN_CTLN1_SWINT_TRIG_MASK | |
97bf75f1 | 275 | I40E_VFINT_DYN_CTLN1_ITR_INDX_MASK | |
b1f3366b | 276 | I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK; |
5eae00c5 GR |
277 | wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), dyn_ctl); |
278 | } | |
279 | } | |
280 | } | |
281 | ||
282 | /** | |
283 | * i40evf_irq_enable - Enable default interrupt generation settings | |
284 | * @adapter: board private structure | |
285 | **/ | |
286 | void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush) | |
287 | { | |
288 | struct i40e_hw *hw = &adapter->hw; | |
289 | ||
164ec1bf | 290 | i40evf_misc_irq_enable(adapter); |
5eae00c5 GR |
291 | i40evf_irq_enable_queues(adapter, ~0); |
292 | ||
293 | if (flush) | |
294 | rd32(hw, I40E_VFGEN_RSTAT); | |
295 | } | |
296 | ||
297 | /** | |
298 | * i40evf_msix_aq - Interrupt handler for vector 0 | |
299 | * @irq: interrupt number | |
300 | * @data: pointer to netdev | |
301 | **/ | |
302 | static irqreturn_t i40evf_msix_aq(int irq, void *data) | |
303 | { | |
304 | struct net_device *netdev = data; | |
305 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
306 | struct i40e_hw *hw = &adapter->hw; | |
307 | u32 val; | |
308 | u32 ena_mask; | |
309 | ||
310 | /* handle non-queue interrupts */ | |
311 | val = rd32(hw, I40E_VFINT_ICR01); | |
312 | ena_mask = rd32(hw, I40E_VFINT_ICR0_ENA1); | |
313 | ||
314 | ||
315 | val = rd32(hw, I40E_VFINT_DYN_CTL01); | |
b1f3366b | 316 | val = val | I40E_VFINT_DYN_CTL01_CLEARPBA_MASK; |
5eae00c5 GR |
317 | wr32(hw, I40E_VFINT_DYN_CTL01, val); |
318 | ||
5eae00c5 GR |
319 | /* schedule work on the private workqueue */ |
320 | schedule_work(&adapter->adminq_task); | |
321 | ||
322 | return IRQ_HANDLED; | |
323 | } | |
324 | ||
325 | /** | |
326 | * i40evf_msix_clean_rings - MSIX mode Interrupt Handler | |
327 | * @irq: interrupt number | |
328 | * @data: pointer to a q_vector | |
329 | **/ | |
330 | static irqreturn_t i40evf_msix_clean_rings(int irq, void *data) | |
331 | { | |
332 | struct i40e_q_vector *q_vector = data; | |
333 | ||
334 | if (!q_vector->tx.ring && !q_vector->rx.ring) | |
335 | return IRQ_HANDLED; | |
336 | ||
337 | napi_schedule(&q_vector->napi); | |
338 | ||
339 | return IRQ_HANDLED; | |
340 | } | |
341 | ||
342 | /** | |
343 | * i40evf_map_vector_to_rxq - associate irqs with rx queues | |
344 | * @adapter: board private structure | |
345 | * @v_idx: interrupt number | |
346 | * @r_idx: queue number | |
347 | **/ | |
348 | static void | |
349 | i40evf_map_vector_to_rxq(struct i40evf_adapter *adapter, int v_idx, int r_idx) | |
350 | { | |
351 | struct i40e_q_vector *q_vector = adapter->q_vector[v_idx]; | |
352 | struct i40e_ring *rx_ring = adapter->rx_rings[r_idx]; | |
353 | ||
354 | rx_ring->q_vector = q_vector; | |
355 | rx_ring->next = q_vector->rx.ring; | |
356 | rx_ring->vsi = &adapter->vsi; | |
357 | q_vector->rx.ring = rx_ring; | |
358 | q_vector->rx.count++; | |
359 | q_vector->rx.latency_range = I40E_LOW_LATENCY; | |
360 | } | |
361 | ||
362 | /** | |
363 | * i40evf_map_vector_to_txq - associate irqs with tx queues | |
364 | * @adapter: board private structure | |
365 | * @v_idx: interrupt number | |
366 | * @t_idx: queue number | |
367 | **/ | |
368 | static void | |
369 | i40evf_map_vector_to_txq(struct i40evf_adapter *adapter, int v_idx, int t_idx) | |
370 | { | |
371 | struct i40e_q_vector *q_vector = adapter->q_vector[v_idx]; | |
372 | struct i40e_ring *tx_ring = adapter->tx_rings[t_idx]; | |
373 | ||
374 | tx_ring->q_vector = q_vector; | |
375 | tx_ring->next = q_vector->tx.ring; | |
376 | tx_ring->vsi = &adapter->vsi; | |
377 | q_vector->tx.ring = tx_ring; | |
378 | q_vector->tx.count++; | |
379 | q_vector->tx.latency_range = I40E_LOW_LATENCY; | |
380 | q_vector->num_ringpairs++; | |
41a1d04b | 381 | q_vector->ring_mask |= BIT(t_idx); |
5eae00c5 GR |
382 | } |
383 | ||
384 | /** | |
385 | * i40evf_map_rings_to_vectors - Maps descriptor rings to vectors | |
386 | * @adapter: board private structure to initialize | |
387 | * | |
388 | * This function maps descriptor rings to the queue-specific vectors | |
389 | * we were allotted through the MSI-X enabling code. Ideally, we'd have | |
390 | * one vector per ring/queue, but on a constrained vector budget, we | |
391 | * group the rings as "efficiently" as possible. You would add new | |
392 | * mapping configurations in here. | |
393 | **/ | |
394 | static int i40evf_map_rings_to_vectors(struct i40evf_adapter *adapter) | |
395 | { | |
396 | int q_vectors; | |
397 | int v_start = 0; | |
398 | int rxr_idx = 0, txr_idx = 0; | |
cc052927 MW |
399 | int rxr_remaining = adapter->num_active_queues; |
400 | int txr_remaining = adapter->num_active_queues; | |
5eae00c5 GR |
401 | int i, j; |
402 | int rqpv, tqpv; | |
403 | int err = 0; | |
404 | ||
405 | q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
406 | ||
407 | /* The ideal configuration... | |
408 | * We have enough vectors to map one per queue. | |
409 | */ | |
973371da | 410 | if (q_vectors >= (rxr_remaining * 2)) { |
5eae00c5 GR |
411 | for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++) |
412 | i40evf_map_vector_to_rxq(adapter, v_start, rxr_idx); | |
413 | ||
414 | for (; txr_idx < txr_remaining; v_start++, txr_idx++) | |
415 | i40evf_map_vector_to_txq(adapter, v_start, txr_idx); | |
416 | goto out; | |
417 | } | |
418 | ||
419 | /* If we don't have enough vectors for a 1-to-1 | |
420 | * mapping, we'll have to group them so there are | |
421 | * multiple queues per vector. | |
422 | * Re-adjusting *qpv takes care of the remainder. | |
423 | */ | |
424 | for (i = v_start; i < q_vectors; i++) { | |
425 | rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i); | |
426 | for (j = 0; j < rqpv; j++) { | |
427 | i40evf_map_vector_to_rxq(adapter, i, rxr_idx); | |
428 | rxr_idx++; | |
429 | rxr_remaining--; | |
430 | } | |
431 | } | |
432 | for (i = v_start; i < q_vectors; i++) { | |
433 | tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i); | |
434 | for (j = 0; j < tqpv; j++) { | |
435 | i40evf_map_vector_to_txq(adapter, i, txr_idx); | |
436 | txr_idx++; | |
437 | txr_remaining--; | |
438 | } | |
439 | } | |
440 | ||
441 | out: | |
442 | adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS; | |
443 | ||
444 | return err; | |
445 | } | |
446 | ||
7709b4c1 AD |
447 | #ifdef CONFIG_NET_POLL_CONTROLLER |
448 | /** | |
449 | * i40evf_netpoll - A Polling 'interrupt' handler | |
450 | * @netdev: network interface device structure | |
451 | * | |
452 | * This is used by netconsole to send skbs without having to re-enable | |
453 | * interrupts. It's not called while the normal interrupt routine is executing. | |
454 | **/ | |
455 | static void i40evf_netpoll(struct net_device *netdev) | |
456 | { | |
457 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
458 | int q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
459 | int i; | |
460 | ||
461 | /* if interface is down do nothing */ | |
462 | if (test_bit(__I40E_DOWN, &adapter->vsi.state)) | |
463 | return; | |
464 | ||
465 | for (i = 0; i < q_vectors; i++) | |
466 | i40evf_msix_clean_rings(0, adapter->q_vector[i]); | |
467 | } | |
468 | ||
469 | #endif | |
5eae00c5 GR |
470 | /** |
471 | * i40evf_request_traffic_irqs - Initialize MSI-X interrupts | |
472 | * @adapter: board private structure | |
473 | * | |
474 | * Allocates MSI-X vectors for tx and rx handling, and requests | |
475 | * interrupts from the kernel. | |
476 | **/ | |
477 | static int | |
478 | i40evf_request_traffic_irqs(struct i40evf_adapter *adapter, char *basename) | |
479 | { | |
480 | int vector, err, q_vectors; | |
481 | int rx_int_idx = 0, tx_int_idx = 0; | |
482 | ||
483 | i40evf_irq_disable(adapter); | |
484 | /* Decrement for Other and TCP Timer vectors */ | |
485 | q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
486 | ||
487 | for (vector = 0; vector < q_vectors; vector++) { | |
488 | struct i40e_q_vector *q_vector = adapter->q_vector[vector]; | |
489 | ||
490 | if (q_vector->tx.ring && q_vector->rx.ring) { | |
491 | snprintf(q_vector->name, sizeof(q_vector->name) - 1, | |
492 | "i40evf-%s-%s-%d", basename, | |
493 | "TxRx", rx_int_idx++); | |
494 | tx_int_idx++; | |
495 | } else if (q_vector->rx.ring) { | |
496 | snprintf(q_vector->name, sizeof(q_vector->name) - 1, | |
497 | "i40evf-%s-%s-%d", basename, | |
498 | "rx", rx_int_idx++); | |
499 | } else if (q_vector->tx.ring) { | |
500 | snprintf(q_vector->name, sizeof(q_vector->name) - 1, | |
501 | "i40evf-%s-%s-%d", basename, | |
502 | "tx", tx_int_idx++); | |
503 | } else { | |
504 | /* skip this unused q_vector */ | |
505 | continue; | |
506 | } | |
507 | err = request_irq( | |
508 | adapter->msix_entries[vector + NONQ_VECS].vector, | |
509 | i40evf_msix_clean_rings, | |
510 | 0, | |
511 | q_vector->name, | |
512 | q_vector); | |
513 | if (err) { | |
514 | dev_info(&adapter->pdev->dev, | |
fb43201f | 515 | "Request_irq failed, error: %d\n", err); |
5eae00c5 GR |
516 | goto free_queue_irqs; |
517 | } | |
518 | /* assign the mask for this irq */ | |
519 | irq_set_affinity_hint( | |
520 | adapter->msix_entries[vector + NONQ_VECS].vector, | |
521 | q_vector->affinity_mask); | |
522 | } | |
523 | ||
524 | return 0; | |
525 | ||
526 | free_queue_irqs: | |
527 | while (vector) { | |
528 | vector--; | |
529 | irq_set_affinity_hint( | |
530 | adapter->msix_entries[vector + NONQ_VECS].vector, | |
531 | NULL); | |
532 | free_irq(adapter->msix_entries[vector + NONQ_VECS].vector, | |
533 | adapter->q_vector[vector]); | |
534 | } | |
535 | return err; | |
536 | } | |
537 | ||
538 | /** | |
539 | * i40evf_request_misc_irq - Initialize MSI-X interrupts | |
540 | * @adapter: board private structure | |
541 | * | |
542 | * Allocates MSI-X vector 0 and requests interrupts from the kernel. This | |
543 | * vector is only for the admin queue, and stays active even when the netdev | |
544 | * is closed. | |
545 | **/ | |
546 | static int i40evf_request_misc_irq(struct i40evf_adapter *adapter) | |
547 | { | |
548 | struct net_device *netdev = adapter->netdev; | |
549 | int err; | |
550 | ||
b39c1e2c | 551 | snprintf(adapter->misc_vector_name, |
9a21a007 CW |
552 | sizeof(adapter->misc_vector_name) - 1, "i40evf-%s:mbx", |
553 | dev_name(&adapter->pdev->dev)); | |
5eae00c5 | 554 | err = request_irq(adapter->msix_entries[0].vector, |
e1dfee8e MW |
555 | &i40evf_msix_aq, 0, |
556 | adapter->misc_vector_name, netdev); | |
5eae00c5 GR |
557 | if (err) { |
558 | dev_err(&adapter->pdev->dev, | |
77fa28be CS |
559 | "request_irq for %s failed: %d\n", |
560 | adapter->misc_vector_name, err); | |
5eae00c5 GR |
561 | free_irq(adapter->msix_entries[0].vector, netdev); |
562 | } | |
563 | return err; | |
564 | } | |
565 | ||
566 | /** | |
567 | * i40evf_free_traffic_irqs - Free MSI-X interrupts | |
568 | * @adapter: board private structure | |
569 | * | |
570 | * Frees all MSI-X vectors other than 0. | |
571 | **/ | |
572 | static void i40evf_free_traffic_irqs(struct i40evf_adapter *adapter) | |
573 | { | |
574 | int i; | |
575 | int q_vectors; | |
75a64435 | 576 | |
5eae00c5 GR |
577 | q_vectors = adapter->num_msix_vectors - NONQ_VECS; |
578 | ||
579 | for (i = 0; i < q_vectors; i++) { | |
580 | irq_set_affinity_hint(adapter->msix_entries[i+1].vector, | |
581 | NULL); | |
582 | free_irq(adapter->msix_entries[i+1].vector, | |
583 | adapter->q_vector[i]); | |
584 | } | |
585 | } | |
586 | ||
587 | /** | |
588 | * i40evf_free_misc_irq - Free MSI-X miscellaneous vector | |
589 | * @adapter: board private structure | |
590 | * | |
591 | * Frees MSI-X vector 0. | |
592 | **/ | |
593 | static void i40evf_free_misc_irq(struct i40evf_adapter *adapter) | |
594 | { | |
595 | struct net_device *netdev = adapter->netdev; | |
596 | ||
597 | free_irq(adapter->msix_entries[0].vector, netdev); | |
598 | } | |
599 | ||
600 | /** | |
601 | * i40evf_configure_tx - Configure Transmit Unit after Reset | |
602 | * @adapter: board private structure | |
603 | * | |
604 | * Configure the Tx unit of the MAC after a reset. | |
605 | **/ | |
606 | static void i40evf_configure_tx(struct i40evf_adapter *adapter) | |
607 | { | |
608 | struct i40e_hw *hw = &adapter->hw; | |
609 | int i; | |
75a64435 | 610 | |
cc052927 | 611 | for (i = 0; i < adapter->num_active_queues; i++) |
5eae00c5 GR |
612 | adapter->tx_rings[i]->tail = hw->hw_addr + I40E_QTX_TAIL1(i); |
613 | } | |
614 | ||
615 | /** | |
616 | * i40evf_configure_rx - Configure Receive Unit after Reset | |
617 | * @adapter: board private structure | |
618 | * | |
619 | * Configure the Rx unit of the MAC after a reset. | |
620 | **/ | |
621 | static void i40evf_configure_rx(struct i40evf_adapter *adapter) | |
622 | { | |
623 | struct i40e_hw *hw = &adapter->hw; | |
624 | struct net_device *netdev = adapter->netdev; | |
625 | int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
626 | int i; | |
627 | int rx_buf_len; | |
628 | ||
629 | ||
630 | adapter->flags &= ~I40EVF_FLAG_RX_PS_CAPABLE; | |
631 | adapter->flags |= I40EVF_FLAG_RX_1BUF_CAPABLE; | |
632 | ||
633 | /* Decide whether to use packet split mode or not */ | |
634 | if (netdev->mtu > ETH_DATA_LEN) { | |
635 | if (adapter->flags & I40EVF_FLAG_RX_PS_CAPABLE) | |
636 | adapter->flags |= I40EVF_FLAG_RX_PS_ENABLED; | |
637 | else | |
638 | adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED; | |
639 | } else { | |
640 | if (adapter->flags & I40EVF_FLAG_RX_1BUF_CAPABLE) | |
641 | adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED; | |
642 | else | |
643 | adapter->flags |= I40EVF_FLAG_RX_PS_ENABLED; | |
644 | } | |
645 | ||
646 | /* Set the RX buffer length according to the mode */ | |
647 | if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED) { | |
648 | rx_buf_len = I40E_RX_HDR_SIZE; | |
649 | } else { | |
650 | if (netdev->mtu <= ETH_DATA_LEN) | |
651 | rx_buf_len = I40EVF_RXBUFFER_2048; | |
652 | else | |
653 | rx_buf_len = ALIGN(max_frame, 1024); | |
654 | } | |
655 | ||
cc052927 | 656 | for (i = 0; i < adapter->num_active_queues; i++) { |
5eae00c5 GR |
657 | adapter->rx_rings[i]->tail = hw->hw_addr + I40E_QRX_TAIL1(i); |
658 | adapter->rx_rings[i]->rx_buf_len = rx_buf_len; | |
659 | } | |
660 | } | |
661 | ||
662 | /** | |
663 | * i40evf_find_vlan - Search filter list for specific vlan filter | |
664 | * @adapter: board private structure | |
665 | * @vlan: vlan tag | |
666 | * | |
667 | * Returns ptr to the filter object or NULL | |
668 | **/ | |
669 | static struct | |
670 | i40evf_vlan_filter *i40evf_find_vlan(struct i40evf_adapter *adapter, u16 vlan) | |
671 | { | |
672 | struct i40evf_vlan_filter *f; | |
673 | ||
674 | list_for_each_entry(f, &adapter->vlan_filter_list, list) { | |
675 | if (vlan == f->vlan) | |
676 | return f; | |
677 | } | |
678 | return NULL; | |
679 | } | |
680 | ||
681 | /** | |
682 | * i40evf_add_vlan - Add a vlan filter to the list | |
683 | * @adapter: board private structure | |
684 | * @vlan: VLAN tag | |
685 | * | |
686 | * Returns ptr to the filter object or NULL when no memory available. | |
687 | **/ | |
688 | static struct | |
689 | i40evf_vlan_filter *i40evf_add_vlan(struct i40evf_adapter *adapter, u16 vlan) | |
690 | { | |
13acb546 MW |
691 | struct i40evf_vlan_filter *f = NULL; |
692 | int count = 50; | |
693 | ||
694 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
695 | &adapter->crit_section)) { | |
696 | udelay(1); | |
697 | if (--count == 0) | |
698 | goto out; | |
699 | } | |
5eae00c5 GR |
700 | |
701 | f = i40evf_find_vlan(adapter, vlan); | |
348d4994 | 702 | if (!f) { |
5eae00c5 | 703 | f = kzalloc(sizeof(*f), GFP_ATOMIC); |
348d4994 | 704 | if (!f) |
13acb546 | 705 | goto clearout; |
249c8b8d | 706 | |
5eae00c5 GR |
707 | f->vlan = vlan; |
708 | ||
709 | INIT_LIST_HEAD(&f->list); | |
710 | list_add(&f->list, &adapter->vlan_filter_list); | |
711 | f->add = true; | |
712 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER; | |
713 | } | |
714 | ||
13acb546 MW |
715 | clearout: |
716 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
717 | out: | |
5eae00c5 GR |
718 | return f; |
719 | } | |
720 | ||
721 | /** | |
722 | * i40evf_del_vlan - Remove a vlan filter from the list | |
723 | * @adapter: board private structure | |
724 | * @vlan: VLAN tag | |
725 | **/ | |
726 | static void i40evf_del_vlan(struct i40evf_adapter *adapter, u16 vlan) | |
727 | { | |
728 | struct i40evf_vlan_filter *f; | |
13acb546 MW |
729 | int count = 50; |
730 | ||
731 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
732 | &adapter->crit_section)) { | |
733 | udelay(1); | |
734 | if (--count == 0) | |
735 | return; | |
736 | } | |
5eae00c5 GR |
737 | |
738 | f = i40evf_find_vlan(adapter, vlan); | |
739 | if (f) { | |
740 | f->remove = true; | |
741 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER; | |
742 | } | |
13acb546 | 743 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
5eae00c5 GR |
744 | } |
745 | ||
746 | /** | |
747 | * i40evf_vlan_rx_add_vid - Add a VLAN filter to a device | |
748 | * @netdev: network device struct | |
749 | * @vid: VLAN tag | |
750 | **/ | |
751 | static int i40evf_vlan_rx_add_vid(struct net_device *netdev, | |
75a64435 | 752 | __always_unused __be16 proto, u16 vid) |
5eae00c5 GR |
753 | { |
754 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
755 | ||
8ed995ff MW |
756 | if (!VLAN_ALLOWED(adapter)) |
757 | return -EIO; | |
5eae00c5 GR |
758 | if (i40evf_add_vlan(adapter, vid) == NULL) |
759 | return -ENOMEM; | |
760 | return 0; | |
761 | } | |
762 | ||
763 | /** | |
764 | * i40evf_vlan_rx_kill_vid - Remove a VLAN filter from a device | |
765 | * @netdev: network device struct | |
766 | * @vid: VLAN tag | |
767 | **/ | |
768 | static int i40evf_vlan_rx_kill_vid(struct net_device *netdev, | |
75a64435 | 769 | __always_unused __be16 proto, u16 vid) |
5eae00c5 GR |
770 | { |
771 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
772 | ||
8ed995ff MW |
773 | if (VLAN_ALLOWED(adapter)) { |
774 | i40evf_del_vlan(adapter, vid); | |
775 | return 0; | |
776 | } | |
777 | return -EIO; | |
5eae00c5 GR |
778 | } |
779 | ||
780 | /** | |
781 | * i40evf_find_filter - Search filter list for specific mac filter | |
782 | * @adapter: board private structure | |
783 | * @macaddr: the MAC address | |
784 | * | |
785 | * Returns ptr to the filter object or NULL | |
786 | **/ | |
787 | static struct | |
788 | i40evf_mac_filter *i40evf_find_filter(struct i40evf_adapter *adapter, | |
789 | u8 *macaddr) | |
790 | { | |
791 | struct i40evf_mac_filter *f; | |
792 | ||
793 | if (!macaddr) | |
794 | return NULL; | |
795 | ||
796 | list_for_each_entry(f, &adapter->mac_filter_list, list) { | |
797 | if (ether_addr_equal(macaddr, f->macaddr)) | |
798 | return f; | |
799 | } | |
800 | return NULL; | |
801 | } | |
802 | ||
803 | /** | |
804 | * i40e_add_filter - Add a mac filter to the filter list | |
805 | * @adapter: board private structure | |
806 | * @macaddr: the MAC address | |
807 | * | |
808 | * Returns ptr to the filter object or NULL when no memory available. | |
809 | **/ | |
810 | static struct | |
811 | i40evf_mac_filter *i40evf_add_filter(struct i40evf_adapter *adapter, | |
812 | u8 *macaddr) | |
813 | { | |
814 | struct i40evf_mac_filter *f; | |
54e16f64 | 815 | int count = 50; |
5eae00c5 GR |
816 | |
817 | if (!macaddr) | |
818 | return NULL; | |
819 | ||
820 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
54e16f64 | 821 | &adapter->crit_section)) { |
b65476cd | 822 | udelay(1); |
54e16f64 MW |
823 | if (--count == 0) |
824 | return NULL; | |
825 | } | |
5eae00c5 GR |
826 | |
827 | f = i40evf_find_filter(adapter, macaddr); | |
348d4994 | 828 | if (!f) { |
5eae00c5 | 829 | f = kzalloc(sizeof(*f), GFP_ATOMIC); |
348d4994 | 830 | if (!f) { |
5eae00c5 GR |
831 | clear_bit(__I40EVF_IN_CRITICAL_TASK, |
832 | &adapter->crit_section); | |
833 | return NULL; | |
834 | } | |
835 | ||
9a173901 | 836 | ether_addr_copy(f->macaddr, macaddr); |
5eae00c5 GR |
837 | |
838 | list_add(&f->list, &adapter->mac_filter_list); | |
839 | f->add = true; | |
840 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; | |
841 | } | |
842 | ||
843 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
844 | return f; | |
845 | } | |
846 | ||
847 | /** | |
848 | * i40evf_set_mac - NDO callback to set port mac address | |
849 | * @netdev: network interface device structure | |
850 | * @p: pointer to an address structure | |
851 | * | |
852 | * Returns 0 on success, negative on failure | |
853 | **/ | |
854 | static int i40evf_set_mac(struct net_device *netdev, void *p) | |
855 | { | |
856 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
857 | struct i40e_hw *hw = &adapter->hw; | |
858 | struct i40evf_mac_filter *f; | |
859 | struct sockaddr *addr = p; | |
860 | ||
861 | if (!is_valid_ether_addr(addr->sa_data)) | |
862 | return -EADDRNOTAVAIL; | |
863 | ||
864 | if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) | |
865 | return 0; | |
866 | ||
14e52ee2 MW |
867 | if (adapter->flags & I40EVF_FLAG_ADDR_SET_BY_PF) |
868 | return -EPERM; | |
869 | ||
870 | f = i40evf_find_filter(adapter, hw->mac.addr); | |
871 | if (f) { | |
872 | f->remove = true; | |
873 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; | |
874 | } | |
875 | ||
5eae00c5 GR |
876 | f = i40evf_add_filter(adapter, addr->sa_data); |
877 | if (f) { | |
9a173901 GR |
878 | ether_addr_copy(hw->mac.addr, addr->sa_data); |
879 | ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr); | |
5eae00c5 GR |
880 | } |
881 | ||
882 | return (f == NULL) ? -ENOMEM : 0; | |
883 | } | |
884 | ||
885 | /** | |
886 | * i40evf_set_rx_mode - NDO callback to set the netdev filters | |
887 | * @netdev: network interface device structure | |
888 | **/ | |
889 | static void i40evf_set_rx_mode(struct net_device *netdev) | |
890 | { | |
891 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
892 | struct i40evf_mac_filter *f, *ftmp; | |
893 | struct netdev_hw_addr *uca; | |
894 | struct netdev_hw_addr *mca; | |
2f41f335 | 895 | struct netdev_hw_addr *ha; |
54e16f64 | 896 | int count = 50; |
5eae00c5 GR |
897 | |
898 | /* add addr if not already in the filter list */ | |
899 | netdev_for_each_uc_addr(uca, netdev) { | |
900 | i40evf_add_filter(adapter, uca->addr); | |
901 | } | |
902 | netdev_for_each_mc_addr(mca, netdev) { | |
903 | i40evf_add_filter(adapter, mca->addr); | |
904 | } | |
905 | ||
906 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
54e16f64 | 907 | &adapter->crit_section)) { |
b65476cd | 908 | udelay(1); |
54e16f64 MW |
909 | if (--count == 0) { |
910 | dev_err(&adapter->pdev->dev, | |
911 | "Failed to get lock in %s\n", __func__); | |
912 | return; | |
913 | } | |
914 | } | |
5eae00c5 GR |
915 | /* remove filter if not in netdev list */ |
916 | list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { | |
2f41f335 SN |
917 | netdev_for_each_mc_addr(mca, netdev) |
918 | if (ether_addr_equal(mca->addr, f->macaddr)) | |
919 | goto bottom_of_search_loop; | |
920 | ||
921 | netdev_for_each_uc_addr(uca, netdev) | |
922 | if (ether_addr_equal(uca->addr, f->macaddr)) | |
923 | goto bottom_of_search_loop; | |
924 | ||
925 | for_each_dev_addr(netdev, ha) | |
926 | if (ether_addr_equal(ha->addr, f->macaddr)) | |
927 | goto bottom_of_search_loop; | |
928 | ||
929 | if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr)) | |
930 | goto bottom_of_search_loop; | |
931 | ||
932 | /* f->macaddr wasn't found in uc, mc, or ha list so delete it */ | |
933 | f->remove = true; | |
934 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER; | |
935 | ||
936 | bottom_of_search_loop: | |
937 | continue; | |
5eae00c5 GR |
938 | } |
939 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
940 | } | |
941 | ||
942 | /** | |
943 | * i40evf_napi_enable_all - enable NAPI on all queue vectors | |
944 | * @adapter: board private structure | |
945 | **/ | |
946 | static void i40evf_napi_enable_all(struct i40evf_adapter *adapter) | |
947 | { | |
948 | int q_idx; | |
949 | struct i40e_q_vector *q_vector; | |
950 | int q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
951 | ||
952 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
953 | struct napi_struct *napi; | |
75a64435 | 954 | |
5eae00c5 GR |
955 | q_vector = adapter->q_vector[q_idx]; |
956 | napi = &q_vector->napi; | |
957 | napi_enable(napi); | |
958 | } | |
959 | } | |
960 | ||
961 | /** | |
962 | * i40evf_napi_disable_all - disable NAPI on all queue vectors | |
963 | * @adapter: board private structure | |
964 | **/ | |
965 | static void i40evf_napi_disable_all(struct i40evf_adapter *adapter) | |
966 | { | |
967 | int q_idx; | |
968 | struct i40e_q_vector *q_vector; | |
969 | int q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
970 | ||
971 | for (q_idx = 0; q_idx < q_vectors; q_idx++) { | |
972 | q_vector = adapter->q_vector[q_idx]; | |
973 | napi_disable(&q_vector->napi); | |
974 | } | |
975 | } | |
976 | ||
977 | /** | |
978 | * i40evf_configure - set up transmit and receive data structures | |
979 | * @adapter: board private structure | |
980 | **/ | |
981 | static void i40evf_configure(struct i40evf_adapter *adapter) | |
982 | { | |
983 | struct net_device *netdev = adapter->netdev; | |
984 | int i; | |
985 | ||
986 | i40evf_set_rx_mode(netdev); | |
987 | ||
988 | i40evf_configure_tx(adapter); | |
989 | i40evf_configure_rx(adapter); | |
990 | adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES; | |
991 | ||
cc052927 | 992 | for (i = 0; i < adapter->num_active_queues; i++) { |
5eae00c5 | 993 | struct i40e_ring *ring = adapter->rx_rings[i]; |
75a64435 | 994 | |
a132af24 | 995 | i40evf_alloc_rx_buffers_1buf(ring, ring->count); |
5eae00c5 GR |
996 | ring->next_to_use = ring->count - 1; |
997 | writel(ring->next_to_use, ring->tail); | |
998 | } | |
999 | } | |
1000 | ||
1001 | /** | |
1002 | * i40evf_up_complete - Finish the last steps of bringing up a connection | |
1003 | * @adapter: board private structure | |
1004 | **/ | |
1005 | static int i40evf_up_complete(struct i40evf_adapter *adapter) | |
1006 | { | |
1007 | adapter->state = __I40EVF_RUNNING; | |
1008 | clear_bit(__I40E_DOWN, &adapter->vsi.state); | |
1009 | ||
1010 | i40evf_napi_enable_all(adapter); | |
1011 | ||
1012 | adapter->aq_required |= I40EVF_FLAG_AQ_ENABLE_QUEUES; | |
1013 | mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); | |
1014 | return 0; | |
1015 | } | |
1016 | ||
5eae00c5 GR |
1017 | /** |
1018 | * i40e_down - Shutdown the connection processing | |
1019 | * @adapter: board private structure | |
1020 | **/ | |
1021 | void i40evf_down(struct i40evf_adapter *adapter) | |
1022 | { | |
1023 | struct net_device *netdev = adapter->netdev; | |
1024 | struct i40evf_mac_filter *f; | |
1025 | ||
ddf0b3a6 MW |
1026 | if (adapter->state == __I40EVF_DOWN) |
1027 | return; | |
1028 | ||
53d0b3ae MW |
1029 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, |
1030 | &adapter->crit_section)) | |
1031 | usleep_range(500, 1000); | |
1032 | ||
63e18c25 MW |
1033 | netif_carrier_off(netdev); |
1034 | netif_tx_disable(netdev); | |
748c434b | 1035 | i40evf_napi_disable_all(adapter); |
63e18c25 | 1036 | i40evf_irq_disable(adapter); |
53d0b3ae | 1037 | |
ef8693eb | 1038 | /* remove all MAC filters */ |
5eae00c5 GR |
1039 | list_for_each_entry(f, &adapter->mac_filter_list, list) { |
1040 | f->remove = true; | |
1041 | } | |
ed1f5b58 MW |
1042 | /* remove all VLAN filters */ |
1043 | list_for_each_entry(f, &adapter->vlan_filter_list, list) { | |
1044 | f->remove = true; | |
1045 | } | |
ef8693eb MW |
1046 | if (!(adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) && |
1047 | adapter->state != __I40EVF_RESETTING) { | |
53d0b3ae MW |
1048 | /* cancel any current operation */ |
1049 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
53d0b3ae MW |
1050 | /* Schedule operations to close down the HW. Don't wait |
1051 | * here for this to complete. The watchdog is still running | |
1052 | * and it will take care of this. | |
1053 | */ | |
1054 | adapter->aq_required = I40EVF_FLAG_AQ_DEL_MAC_FILTER; | |
ed1f5b58 | 1055 | adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER; |
ef8693eb | 1056 | adapter->aq_required |= I40EVF_FLAG_AQ_DISABLE_QUEUES; |
ef8693eb | 1057 | } |
5eae00c5 | 1058 | |
53d0b3ae | 1059 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
5eae00c5 GR |
1060 | } |
1061 | ||
1062 | /** | |
1063 | * i40evf_acquire_msix_vectors - Setup the MSIX capability | |
1064 | * @adapter: board private structure | |
1065 | * @vectors: number of vectors to request | |
1066 | * | |
1067 | * Work with the OS to set up the MSIX vectors needed. | |
1068 | * | |
1069 | * Returns 0 on success, negative on failure | |
1070 | **/ | |
1071 | static int | |
1072 | i40evf_acquire_msix_vectors(struct i40evf_adapter *adapter, int vectors) | |
1073 | { | |
1074 | int err, vector_threshold; | |
1075 | ||
1076 | /* We'll want at least 3 (vector_threshold): | |
1077 | * 0) Other (Admin Queue and link, mostly) | |
1078 | * 1) TxQ[0] Cleanup | |
1079 | * 2) RxQ[0] Cleanup | |
1080 | */ | |
1081 | vector_threshold = MIN_MSIX_COUNT; | |
1082 | ||
1083 | /* The more we get, the more we will assign to Tx/Rx Cleanup | |
1084 | * for the separate queues...where Rx Cleanup >= Tx Cleanup. | |
1085 | * Right now, we simply care about how many we'll get; we'll | |
1086 | * set them up later while requesting irq's. | |
1087 | */ | |
fc2f2f5d AG |
1088 | err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries, |
1089 | vector_threshold, vectors); | |
1090 | if (err < 0) { | |
80e72893 | 1091 | dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n"); |
5eae00c5 GR |
1092 | kfree(adapter->msix_entries); |
1093 | adapter->msix_entries = NULL; | |
fc2f2f5d | 1094 | return err; |
5eae00c5 | 1095 | } |
fc2f2f5d AG |
1096 | |
1097 | /* Adjust for only the vectors we'll use, which is minimum | |
1098 | * of max_msix_q_vectors + NONQ_VECS, or the number of | |
1099 | * vectors we were allocated. | |
1100 | */ | |
1101 | adapter->num_msix_vectors = err; | |
1102 | return 0; | |
5eae00c5 GR |
1103 | } |
1104 | ||
1105 | /** | |
1106 | * i40evf_free_queues - Free memory for all rings | |
1107 | * @adapter: board private structure to initialize | |
1108 | * | |
1109 | * Free all of the memory associated with queue pairs. | |
1110 | **/ | |
1111 | static void i40evf_free_queues(struct i40evf_adapter *adapter) | |
1112 | { | |
1113 | int i; | |
1114 | ||
1115 | if (!adapter->vsi_res) | |
1116 | return; | |
cc052927 | 1117 | for (i = 0; i < adapter->num_active_queues; i++) { |
5eae00c5 GR |
1118 | if (adapter->tx_rings[i]) |
1119 | kfree_rcu(adapter->tx_rings[i], rcu); | |
1120 | adapter->tx_rings[i] = NULL; | |
1121 | adapter->rx_rings[i] = NULL; | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | /** | |
1126 | * i40evf_alloc_queues - Allocate memory for all rings | |
1127 | * @adapter: board private structure to initialize | |
1128 | * | |
1129 | * We allocate one ring per queue at run-time since we don't know the | |
1130 | * number of queues at compile-time. The polling_netdev array is | |
1131 | * intended for Multiqueue, but should work fine with a single queue. | |
1132 | **/ | |
1133 | static int i40evf_alloc_queues(struct i40evf_adapter *adapter) | |
1134 | { | |
1135 | int i; | |
1136 | ||
cc052927 | 1137 | for (i = 0; i < adapter->num_active_queues; i++) { |
5eae00c5 GR |
1138 | struct i40e_ring *tx_ring; |
1139 | struct i40e_ring *rx_ring; | |
1140 | ||
75a64435 | 1141 | tx_ring = kzalloc(sizeof(*tx_ring) * 2, GFP_KERNEL); |
5eae00c5 GR |
1142 | if (!tx_ring) |
1143 | goto err_out; | |
1144 | ||
1145 | tx_ring->queue_index = i; | |
1146 | tx_ring->netdev = adapter->netdev; | |
1147 | tx_ring->dev = &adapter->pdev->dev; | |
d732a184 | 1148 | tx_ring->count = adapter->tx_desc_count; |
1f012279 ASJ |
1149 | if (adapter->flags & I40E_FLAG_WB_ON_ITR_CAPABLE) |
1150 | tx_ring->flags |= I40E_TXR_FLAGS_WB_ON_ITR; | |
5eae00c5 GR |
1151 | adapter->tx_rings[i] = tx_ring; |
1152 | ||
1153 | rx_ring = &tx_ring[1]; | |
1154 | rx_ring->queue_index = i; | |
1155 | rx_ring->netdev = adapter->netdev; | |
1156 | rx_ring->dev = &adapter->pdev->dev; | |
d732a184 | 1157 | rx_ring->count = adapter->rx_desc_count; |
5eae00c5 GR |
1158 | adapter->rx_rings[i] = rx_ring; |
1159 | } | |
1160 | ||
1161 | return 0; | |
1162 | ||
1163 | err_out: | |
1164 | i40evf_free_queues(adapter); | |
1165 | return -ENOMEM; | |
1166 | } | |
1167 | ||
1168 | /** | |
1169 | * i40evf_set_interrupt_capability - set MSI-X or FAIL if not supported | |
1170 | * @adapter: board private structure to initialize | |
1171 | * | |
1172 | * Attempt to configure the interrupts using the best available | |
1173 | * capabilities of the hardware and the kernel. | |
1174 | **/ | |
1175 | static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter) | |
1176 | { | |
1177 | int vector, v_budget; | |
1178 | int pairs = 0; | |
1179 | int err = 0; | |
1180 | ||
1181 | if (!adapter->vsi_res) { | |
1182 | err = -EIO; | |
1183 | goto out; | |
1184 | } | |
cc052927 | 1185 | pairs = adapter->num_active_queues; |
5eae00c5 GR |
1186 | |
1187 | /* It's easy to be greedy for MSI-X vectors, but it really | |
1188 | * doesn't do us much good if we have a lot more vectors | |
1189 | * than CPU's. So let's be conservative and only ask for | |
1190 | * (roughly) twice the number of vectors as there are CPU's. | |
1191 | */ | |
30a500e2 MW |
1192 | v_budget = min_t(int, pairs, (int)(num_online_cpus() * 2)) + NONQ_VECS; |
1193 | v_budget = min_t(int, v_budget, (int)adapter->vf_res->max_vectors); | |
5eae00c5 | 1194 | |
5eae00c5 GR |
1195 | adapter->msix_entries = kcalloc(v_budget, |
1196 | sizeof(struct msix_entry), GFP_KERNEL); | |
1197 | if (!adapter->msix_entries) { | |
1198 | err = -ENOMEM; | |
1199 | goto out; | |
1200 | } | |
1201 | ||
1202 | for (vector = 0; vector < v_budget; vector++) | |
1203 | adapter->msix_entries[vector].entry = vector; | |
1204 | ||
313ed2d5 | 1205 | err = i40evf_acquire_msix_vectors(adapter, v_budget); |
5eae00c5 GR |
1206 | |
1207 | out: | |
1208 | adapter->netdev->real_num_tx_queues = pairs; | |
1209 | return err; | |
1210 | } | |
1211 | ||
e25d00b8 ASJ |
1212 | /** |
1213 | * i40e_configure_rss_aq - Prepare for RSS using AQ commands | |
1214 | * @vsi: vsi structure | |
1215 | * @seed: RSS hash seed | |
1216 | **/ | |
1217 | static void i40evf_configure_rss_aq(struct i40e_vsi *vsi, const u8 *seed) | |
1218 | { | |
1219 | struct i40e_aqc_get_set_rss_key_data rss_key; | |
1220 | struct i40evf_adapter *adapter = vsi->back; | |
1221 | struct i40e_hw *hw = &adapter->hw; | |
1222 | int ret = 0, i; | |
1223 | u8 *rss_lut; | |
1224 | ||
1225 | if (!vsi->id) | |
1226 | return; | |
1227 | ||
1228 | if (adapter->current_op != I40E_VIRTCHNL_OP_UNKNOWN) { | |
1229 | /* bail because we already have a command pending */ | |
1230 | dev_err(&adapter->pdev->dev, "Cannot confiure RSS, command %d pending\n", | |
1231 | adapter->current_op); | |
1232 | return; | |
1233 | } | |
1234 | ||
1235 | memset(&rss_key, 0, sizeof(rss_key)); | |
1236 | memcpy(&rss_key, seed, sizeof(rss_key)); | |
1237 | ||
1238 | rss_lut = kzalloc(((I40E_VFQF_HLUT_MAX_INDEX + 1) * 4), GFP_KERNEL); | |
1239 | if (!rss_lut) | |
1240 | return; | |
1241 | ||
1242 | /* Populate the LUT with max no. PF queues in round robin fashion */ | |
1243 | for (i = 0; i <= (I40E_VFQF_HLUT_MAX_INDEX * 4); i++) | |
1244 | rss_lut[i] = i % adapter->num_active_queues; | |
1245 | ||
1246 | ret = i40evf_aq_set_rss_key(hw, vsi->id, &rss_key); | |
1247 | if (ret) { | |
1248 | dev_err(&adapter->pdev->dev, | |
1249 | "Cannot set RSS key, err %s aq_err %s\n", | |
1250 | i40evf_stat_str(hw, ret), | |
1251 | i40evf_aq_str(hw, hw->aq.asq_last_status)); | |
1252 | return; | |
1253 | } | |
1254 | ||
1255 | ret = i40evf_aq_set_rss_lut(hw, vsi->id, false, rss_lut, | |
1256 | (I40E_VFQF_HLUT_MAX_INDEX + 1) * 4); | |
1257 | if (ret) | |
1258 | dev_err(&adapter->pdev->dev, | |
1259 | "Cannot set RSS lut, err %s aq_err %s\n", | |
1260 | i40evf_stat_str(hw, ret), | |
1261 | i40evf_aq_str(hw, hw->aq.asq_last_status)); | |
1262 | } | |
1263 | ||
1264 | /** | |
1265 | * i40e_configure_rss_reg - Prepare for RSS if used | |
1266 | * @adapter: board private structure | |
1267 | * @seed: RSS hash seed | |
1268 | **/ | |
1269 | static void i40evf_configure_rss_reg(struct i40evf_adapter *adapter, | |
1270 | const u8 *seed) | |
1271 | { | |
1272 | struct i40e_hw *hw = &adapter->hw; | |
1273 | u32 *seed_dw = (u32 *)seed; | |
1274 | u32 cqueue = 0; | |
1275 | u32 lut = 0; | |
1276 | int i, j; | |
1277 | ||
1278 | /* Fill out hash function seed */ | |
1279 | for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++) | |
1280 | wr32(hw, I40E_VFQF_HKEY(i), seed_dw[i]); | |
1281 | ||
1282 | /* Populate the LUT with max no. PF queues in round robin fashion */ | |
1283 | for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++) { | |
1284 | lut = 0; | |
1285 | for (j = 0; j < 4; j++) { | |
1286 | if (cqueue == adapter->num_active_queues) | |
1287 | cqueue = 0; | |
1288 | lut |= ((cqueue) << (8 * j)); | |
1289 | cqueue++; | |
1290 | } | |
1291 | wr32(hw, I40E_VFQF_HLUT(i), lut); | |
1292 | } | |
1293 | i40e_flush(hw); | |
1294 | } | |
1295 | ||
1296 | /** | |
1297 | * i40evf_configure_rss - Prepare for RSS | |
1298 | * @adapter: board private structure | |
1299 | **/ | |
1300 | static void i40evf_configure_rss(struct i40evf_adapter *adapter) | |
1301 | { | |
1302 | struct i40e_hw *hw = &adapter->hw; | |
1303 | u8 seed[I40EVF_HKEY_ARRAY_SIZE]; | |
1304 | u64 hena; | |
1305 | ||
1306 | netdev_rss_key_fill((void *)seed, I40EVF_HKEY_ARRAY_SIZE); | |
1307 | ||
1308 | /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */ | |
1309 | hena = I40E_DEFAULT_RSS_HENA; | |
1310 | wr32(hw, I40E_VFQF_HENA(0), (u32)hena); | |
1311 | wr32(hw, I40E_VFQF_HENA(1), (u32)(hena >> 32)); | |
1312 | ||
1313 | if (RSS_AQ(adapter)) | |
1314 | i40evf_configure_rss_aq(&adapter->vsi, seed); | |
1315 | else | |
1316 | i40evf_configure_rss_reg(adapter, seed); | |
1317 | } | |
1318 | ||
5eae00c5 GR |
1319 | /** |
1320 | * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors | |
1321 | * @adapter: board private structure to initialize | |
1322 | * | |
1323 | * We allocate one q_vector per queue interrupt. If allocation fails we | |
1324 | * return -ENOMEM. | |
1325 | **/ | |
1326 | static int i40evf_alloc_q_vectors(struct i40evf_adapter *adapter) | |
1327 | { | |
1328 | int q_idx, num_q_vectors; | |
1329 | struct i40e_q_vector *q_vector; | |
1330 | ||
1331 | num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
1332 | ||
1333 | for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { | |
75a64435 | 1334 | q_vector = kzalloc(sizeof(*q_vector), GFP_KERNEL); |
5eae00c5 GR |
1335 | if (!q_vector) |
1336 | goto err_out; | |
1337 | q_vector->adapter = adapter; | |
1338 | q_vector->vsi = &adapter->vsi; | |
1339 | q_vector->v_idx = q_idx; | |
1340 | netif_napi_add(adapter->netdev, &q_vector->napi, | |
75a64435 | 1341 | i40evf_napi_poll, NAPI_POLL_WEIGHT); |
5eae00c5 GR |
1342 | adapter->q_vector[q_idx] = q_vector; |
1343 | } | |
1344 | ||
1345 | return 0; | |
1346 | ||
1347 | err_out: | |
1348 | while (q_idx) { | |
1349 | q_idx--; | |
1350 | q_vector = adapter->q_vector[q_idx]; | |
1351 | netif_napi_del(&q_vector->napi); | |
1352 | kfree(q_vector); | |
1353 | adapter->q_vector[q_idx] = NULL; | |
1354 | } | |
1355 | return -ENOMEM; | |
1356 | } | |
1357 | ||
1358 | /** | |
1359 | * i40evf_free_q_vectors - Free memory allocated for interrupt vectors | |
1360 | * @adapter: board private structure to initialize | |
1361 | * | |
1362 | * This function frees the memory allocated to the q_vectors. In addition if | |
1363 | * NAPI is enabled it will delete any references to the NAPI struct prior | |
1364 | * to freeing the q_vector. | |
1365 | **/ | |
1366 | static void i40evf_free_q_vectors(struct i40evf_adapter *adapter) | |
1367 | { | |
1368 | int q_idx, num_q_vectors; | |
1369 | int napi_vectors; | |
1370 | ||
1371 | num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; | |
cc052927 | 1372 | napi_vectors = adapter->num_active_queues; |
5eae00c5 GR |
1373 | |
1374 | for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { | |
1375 | struct i40e_q_vector *q_vector = adapter->q_vector[q_idx]; | |
1376 | ||
1377 | adapter->q_vector[q_idx] = NULL; | |
1378 | if (q_idx < napi_vectors) | |
1379 | netif_napi_del(&q_vector->napi); | |
1380 | kfree(q_vector); | |
1381 | } | |
1382 | } | |
1383 | ||
1384 | /** | |
1385 | * i40evf_reset_interrupt_capability - Reset MSIX setup | |
1386 | * @adapter: board private structure | |
1387 | * | |
1388 | **/ | |
1389 | void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter) | |
1390 | { | |
1391 | pci_disable_msix(adapter->pdev); | |
1392 | kfree(adapter->msix_entries); | |
1393 | adapter->msix_entries = NULL; | |
5eae00c5 GR |
1394 | } |
1395 | ||
1396 | /** | |
1397 | * i40evf_init_interrupt_scheme - Determine if MSIX is supported and init | |
1398 | * @adapter: board private structure to initialize | |
1399 | * | |
1400 | **/ | |
1401 | int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter) | |
1402 | { | |
1403 | int err; | |
1404 | ||
1405 | err = i40evf_set_interrupt_capability(adapter); | |
1406 | if (err) { | |
1407 | dev_err(&adapter->pdev->dev, | |
1408 | "Unable to setup interrupt capabilities\n"); | |
1409 | goto err_set_interrupt; | |
1410 | } | |
1411 | ||
1412 | err = i40evf_alloc_q_vectors(adapter); | |
1413 | if (err) { | |
1414 | dev_err(&adapter->pdev->dev, | |
1415 | "Unable to allocate memory for queue vectors\n"); | |
1416 | goto err_alloc_q_vectors; | |
1417 | } | |
1418 | ||
1419 | err = i40evf_alloc_queues(adapter); | |
1420 | if (err) { | |
1421 | dev_err(&adapter->pdev->dev, | |
1422 | "Unable to allocate memory for queues\n"); | |
1423 | goto err_alloc_queues; | |
1424 | } | |
1425 | ||
1426 | dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u", | |
75a64435 MW |
1427 | (adapter->num_active_queues > 1) ? "Enabled" : "Disabled", |
1428 | adapter->num_active_queues); | |
5eae00c5 GR |
1429 | |
1430 | return 0; | |
1431 | err_alloc_queues: | |
1432 | i40evf_free_q_vectors(adapter); | |
1433 | err_alloc_q_vectors: | |
1434 | i40evf_reset_interrupt_capability(adapter); | |
1435 | err_set_interrupt: | |
1436 | return err; | |
1437 | } | |
1438 | ||
1439 | /** | |
1440 | * i40evf_watchdog_timer - Periodic call-back timer | |
1441 | * @data: pointer to adapter disguised as unsigned long | |
1442 | **/ | |
1443 | static void i40evf_watchdog_timer(unsigned long data) | |
1444 | { | |
1445 | struct i40evf_adapter *adapter = (struct i40evf_adapter *)data; | |
75a64435 | 1446 | |
5eae00c5 GR |
1447 | schedule_work(&adapter->watchdog_task); |
1448 | /* timer will be rescheduled in watchdog task */ | |
1449 | } | |
1450 | ||
1451 | /** | |
1452 | * i40evf_watchdog_task - Periodic call-back task | |
1453 | * @work: pointer to work_struct | |
1454 | **/ | |
1455 | static void i40evf_watchdog_task(struct work_struct *work) | |
1456 | { | |
1457 | struct i40evf_adapter *adapter = container_of(work, | |
75a64435 MW |
1458 | struct i40evf_adapter, |
1459 | watchdog_task); | |
5eae00c5 | 1460 | struct i40e_hw *hw = &adapter->hw; |
ee5c1e92 | 1461 | u32 reg_val; |
5eae00c5 | 1462 | |
ef8693eb MW |
1463 | if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section)) |
1464 | goto restart_watchdog; | |
1465 | ||
1466 | if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) { | |
ee5c1e92 MW |
1467 | reg_val = rd32(hw, I40E_VFGEN_RSTAT) & |
1468 | I40E_VFGEN_RSTAT_VFR_STATE_MASK; | |
1469 | if ((reg_val == I40E_VFR_VFACTIVE) || | |
1470 | (reg_val == I40E_VFR_COMPLETED)) { | |
ef8693eb MW |
1471 | /* A chance for redemption! */ |
1472 | dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n"); | |
1473 | adapter->state = __I40EVF_STARTUP; | |
1474 | adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED; | |
1475 | schedule_delayed_work(&adapter->init_task, 10); | |
1476 | clear_bit(__I40EVF_IN_CRITICAL_TASK, | |
1477 | &adapter->crit_section); | |
1478 | /* Don't reschedule the watchdog, since we've restarted | |
1479 | * the init task. When init_task contacts the PF and | |
1480 | * gets everything set up again, it'll restart the | |
1481 | * watchdog for us. Down, boy. Sit. Stay. Woof. | |
1482 | */ | |
1483 | return; | |
1484 | } | |
ef8693eb MW |
1485 | adapter->aq_required = 0; |
1486 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
5eae00c5 | 1487 | goto watchdog_done; |
ef8693eb | 1488 | } |
5eae00c5 | 1489 | |
ef8693eb MW |
1490 | if ((adapter->state < __I40EVF_DOWN) || |
1491 | (adapter->flags & I40EVF_FLAG_RESET_PENDING)) | |
5eae00c5 GR |
1492 | goto watchdog_done; |
1493 | ||
ef8693eb | 1494 | /* check for reset */ |
ee5c1e92 MW |
1495 | reg_val = rd32(hw, I40E_VF_ARQLEN1) & I40E_VF_ARQLEN1_ARQENABLE_MASK; |
1496 | if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) && !reg_val) { | |
5eae00c5 | 1497 | adapter->state = __I40EVF_RESETTING; |
ef8693eb | 1498 | adapter->flags |= I40EVF_FLAG_RESET_PENDING; |
249c8b8d | 1499 | dev_err(&adapter->pdev->dev, "Hardware reset detected\n"); |
5eae00c5 | 1500 | schedule_work(&adapter->reset_task); |
ef8693eb MW |
1501 | adapter->aq_required = 0; |
1502 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
5eae00c5 GR |
1503 | goto watchdog_done; |
1504 | } | |
1505 | ||
1506 | /* Process admin queue tasks. After init, everything gets done | |
1507 | * here so we don't race on the admin queue. | |
1508 | */ | |
ed636960 | 1509 | if (adapter->current_op) { |
0758e7cb MW |
1510 | if (!i40evf_asq_done(hw)) { |
1511 | dev_dbg(&adapter->pdev->dev, "Admin queue timeout\n"); | |
1512 | i40evf_send_api_ver(adapter); | |
1513 | } | |
5eae00c5 | 1514 | goto watchdog_done; |
0758e7cb | 1515 | } |
e6d038de MW |
1516 | if (adapter->aq_required & I40EVF_FLAG_AQ_GET_CONFIG) { |
1517 | i40evf_send_vf_config_msg(adapter); | |
1518 | goto watchdog_done; | |
1519 | } | |
5eae00c5 | 1520 | |
e284fc88 MW |
1521 | if (adapter->aq_required & I40EVF_FLAG_AQ_DISABLE_QUEUES) { |
1522 | i40evf_disable_queues(adapter); | |
1523 | goto watchdog_done; | |
1524 | } | |
1525 | ||
5eae00c5 GR |
1526 | if (adapter->aq_required & I40EVF_FLAG_AQ_MAP_VECTORS) { |
1527 | i40evf_map_queues(adapter); | |
1528 | goto watchdog_done; | |
1529 | } | |
1530 | ||
1531 | if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_MAC_FILTER) { | |
1532 | i40evf_add_ether_addrs(adapter); | |
1533 | goto watchdog_done; | |
1534 | } | |
1535 | ||
1536 | if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_VLAN_FILTER) { | |
1537 | i40evf_add_vlans(adapter); | |
1538 | goto watchdog_done; | |
1539 | } | |
1540 | ||
1541 | if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_MAC_FILTER) { | |
1542 | i40evf_del_ether_addrs(adapter); | |
1543 | goto watchdog_done; | |
1544 | } | |
1545 | ||
1546 | if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_VLAN_FILTER) { | |
1547 | i40evf_del_vlans(adapter); | |
1548 | goto watchdog_done; | |
1549 | } | |
1550 | ||
5eae00c5 GR |
1551 | if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_QUEUES) { |
1552 | i40evf_configure_queues(adapter); | |
1553 | goto watchdog_done; | |
1554 | } | |
1555 | ||
1556 | if (adapter->aq_required & I40EVF_FLAG_AQ_ENABLE_QUEUES) { | |
1557 | i40evf_enable_queues(adapter); | |
1558 | goto watchdog_done; | |
1559 | } | |
1560 | ||
e25d00b8 ASJ |
1561 | if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_RSS) { |
1562 | /* This message goes straight to the firmware, not the | |
1563 | * PF, so we don't have to set current_op as we will | |
1564 | * not get a response through the ARQ. | |
1565 | */ | |
1566 | i40evf_configure_rss(adapter); | |
1567 | adapter->aq_required &= ~I40EVF_FLAG_AQ_CONFIGURE_RSS; | |
1568 | goto watchdog_done; | |
1569 | } | |
1570 | ||
5eae00c5 GR |
1571 | if (adapter->state == __I40EVF_RUNNING) |
1572 | i40evf_request_stats(adapter); | |
5eae00c5 | 1573 | watchdog_done: |
4870e176 MW |
1574 | if (adapter->state == __I40EVF_RUNNING) { |
1575 | i40evf_irq_enable_queues(adapter, ~0); | |
1576 | i40evf_fire_sw_int(adapter, 0xFF); | |
1577 | } else { | |
1578 | i40evf_fire_sw_int(adapter, 0x1); | |
1579 | } | |
1580 | ||
ef8693eb MW |
1581 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
1582 | restart_watchdog: | |
d3e2edb7 AS |
1583 | if (adapter->state == __I40EVF_REMOVE) |
1584 | return; | |
5eae00c5 GR |
1585 | if (adapter->aq_required) |
1586 | mod_timer(&adapter->watchdog_timer, | |
1587 | jiffies + msecs_to_jiffies(20)); | |
1588 | else | |
1589 | mod_timer(&adapter->watchdog_timer, jiffies + (HZ * 2)); | |
5eae00c5 GR |
1590 | schedule_work(&adapter->adminq_task); |
1591 | } | |
1592 | ||
67c818a1 MW |
1593 | #define I40EVF_RESET_WAIT_MS 10 |
1594 | #define I40EVF_RESET_WAIT_COUNT 500 | |
5eae00c5 GR |
1595 | /** |
1596 | * i40evf_reset_task - Call-back task to handle hardware reset | |
1597 | * @work: pointer to work_struct | |
1598 | * | |
1599 | * During reset we need to shut down and reinitialize the admin queue | |
1600 | * before we can use it to communicate with the PF again. We also clear | |
1601 | * and reinit the rings because that context is lost as well. | |
1602 | **/ | |
1603 | static void i40evf_reset_task(struct work_struct *work) | |
1604 | { | |
ef8693eb MW |
1605 | struct i40evf_adapter *adapter = container_of(work, |
1606 | struct i40evf_adapter, | |
1607 | reset_task); | |
ac833bbf | 1608 | struct net_device *netdev = adapter->netdev; |
5eae00c5 | 1609 | struct i40e_hw *hw = &adapter->hw; |
ac833bbf | 1610 | struct i40evf_mac_filter *f; |
ee5c1e92 | 1611 | u32 reg_val; |
ac833bbf | 1612 | int i = 0, err; |
5eae00c5 GR |
1613 | |
1614 | while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, | |
1615 | &adapter->crit_section)) | |
f98a2006 | 1616 | usleep_range(500, 1000); |
3526d800 | 1617 | |
67c818a1 | 1618 | i40evf_misc_irq_disable(adapter); |
3526d800 | 1619 | if (adapter->flags & I40EVF_FLAG_RESET_NEEDED) { |
67c818a1 MW |
1620 | adapter->flags &= ~I40EVF_FLAG_RESET_NEEDED; |
1621 | /* Restart the AQ here. If we have been reset but didn't | |
1622 | * detect it, or if the PF had to reinit, our AQ will be hosed. | |
1623 | */ | |
1624 | i40evf_shutdown_adminq(hw); | |
1625 | i40evf_init_adminq(hw); | |
3526d800 MW |
1626 | i40evf_request_reset(adapter); |
1627 | } | |
67c818a1 | 1628 | adapter->flags |= I40EVF_FLAG_RESET_PENDING; |
3526d800 | 1629 | |
ef8693eb MW |
1630 | /* poll until we see the reset actually happen */ |
1631 | for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { | |
ee5c1e92 MW |
1632 | reg_val = rd32(hw, I40E_VF_ARQLEN1) & |
1633 | I40E_VF_ARQLEN1_ARQENABLE_MASK; | |
1634 | if (!reg_val) | |
ef8693eb | 1635 | break; |
ee5c1e92 | 1636 | usleep_range(5000, 10000); |
ef8693eb MW |
1637 | } |
1638 | if (i == I40EVF_RESET_WAIT_COUNT) { | |
67c818a1 | 1639 | dev_info(&adapter->pdev->dev, "Never saw reset\n"); |
ef8693eb MW |
1640 | goto continue_reset; /* act like the reset happened */ |
1641 | } | |
5eae00c5 | 1642 | |
ef8693eb MW |
1643 | /* wait until the reset is complete and the PF is responding to us */ |
1644 | for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { | |
ee5c1e92 MW |
1645 | reg_val = rd32(hw, I40E_VFGEN_RSTAT) & |
1646 | I40E_VFGEN_RSTAT_VFR_STATE_MASK; | |
1647 | if (reg_val == I40E_VFR_VFACTIVE) | |
5eae00c5 | 1648 | break; |
c88e38cc | 1649 | msleep(I40EVF_RESET_WAIT_MS); |
5eae00c5 | 1650 | } |
67c818a1 MW |
1651 | /* extra wait to make sure minimum wait is met */ |
1652 | msleep(I40EVF_RESET_WAIT_MS); | |
ef8693eb | 1653 | if (i == I40EVF_RESET_WAIT_COUNT) { |
874d1a10 | 1654 | struct i40evf_mac_filter *ftmp; |
6ba36a24 MW |
1655 | struct i40evf_vlan_filter *fv, *fvtmp; |
1656 | ||
5eae00c5 | 1657 | /* reset never finished */ |
80e72893 | 1658 | dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n", |
ee5c1e92 | 1659 | reg_val); |
ef8693eb MW |
1660 | adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED; |
1661 | ||
169f4076 MW |
1662 | if (netif_running(adapter->netdev)) { |
1663 | set_bit(__I40E_DOWN, &adapter->vsi.state); | |
ac833bbf | 1664 | netif_carrier_off(netdev); |
67c818a1 MW |
1665 | netif_tx_disable(netdev); |
1666 | i40evf_napi_disable_all(adapter); | |
1667 | i40evf_irq_disable(adapter); | |
169f4076 MW |
1668 | i40evf_free_traffic_irqs(adapter); |
1669 | i40evf_free_all_tx_resources(adapter); | |
1670 | i40evf_free_all_rx_resources(adapter); | |
1671 | } | |
6ba36a24 MW |
1672 | |
1673 | /* Delete all of the filters, both MAC and VLAN. */ | |
1674 | list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, | |
1675 | list) { | |
1676 | list_del(&f->list); | |
1677 | kfree(f); | |
1678 | } | |
67c818a1 | 1679 | |
6ba36a24 MW |
1680 | list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list, |
1681 | list) { | |
1682 | list_del(&fv->list); | |
1683 | kfree(fv); | |
1684 | } | |
1685 | ||
ef8693eb MW |
1686 | i40evf_free_misc_irq(adapter); |
1687 | i40evf_reset_interrupt_capability(adapter); | |
1688 | i40evf_free_queues(adapter); | |
d31944d6 | 1689 | i40evf_free_q_vectors(adapter); |
ef8693eb MW |
1690 | kfree(adapter->vf_res); |
1691 | i40evf_shutdown_adminq(hw); | |
1692 | adapter->netdev->flags &= ~IFF_UP; | |
1693 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); | |
67c818a1 MW |
1694 | adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; |
1695 | dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n"); | |
ef8693eb | 1696 | return; /* Do not attempt to reinit. It's dead, Jim. */ |
5eae00c5 | 1697 | } |
ef8693eb MW |
1698 | |
1699 | continue_reset: | |
3c8e0b98 | 1700 | if (netif_running(adapter->netdev)) { |
3c8e0b98 | 1701 | netif_carrier_off(netdev); |
67c818a1 MW |
1702 | netif_tx_stop_all_queues(netdev); |
1703 | i40evf_napi_disable_all(adapter); | |
3c8e0b98 | 1704 | } |
67c818a1 | 1705 | i40evf_irq_disable(adapter); |
ac833bbf | 1706 | |
5eae00c5 | 1707 | adapter->state = __I40EVF_RESETTING; |
67c818a1 MW |
1708 | adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; |
1709 | ||
1710 | /* free the Tx/Rx rings and descriptors, might be better to just | |
1711 | * re-use them sometime in the future | |
1712 | */ | |
1713 | i40evf_free_all_rx_resources(adapter); | |
1714 | i40evf_free_all_tx_resources(adapter); | |
5eae00c5 GR |
1715 | |
1716 | /* kill and reinit the admin queue */ | |
1717 | if (i40evf_shutdown_adminq(hw)) | |
ac833bbf MW |
1718 | dev_warn(&adapter->pdev->dev, "Failed to shut down adminq\n"); |
1719 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; | |
5eae00c5 GR |
1720 | err = i40evf_init_adminq(hw); |
1721 | if (err) | |
ac833bbf MW |
1722 | dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n", |
1723 | err); | |
5eae00c5 | 1724 | |
e6d038de MW |
1725 | adapter->aq_required = I40EVF_FLAG_AQ_GET_CONFIG; |
1726 | adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS; | |
ac833bbf MW |
1727 | |
1728 | /* re-add all MAC filters */ | |
1729 | list_for_each_entry(f, &adapter->mac_filter_list, list) { | |
1730 | f->add = true; | |
1731 | } | |
1732 | /* re-add all VLAN filters */ | |
1733 | list_for_each_entry(f, &adapter->vlan_filter_list, list) { | |
1734 | f->add = true; | |
1735 | } | |
e6d038de | 1736 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER; |
ac833bbf | 1737 | adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER; |
5eae00c5 | 1738 | clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section); |
67c818a1 | 1739 | i40evf_misc_irq_enable(adapter); |
5eae00c5 GR |
1740 | |
1741 | mod_timer(&adapter->watchdog_timer, jiffies + 2); | |
1742 | ||
1743 | if (netif_running(adapter->netdev)) { | |
1744 | /* allocate transmit descriptors */ | |
1745 | err = i40evf_setup_all_tx_resources(adapter); | |
1746 | if (err) | |
1747 | goto reset_err; | |
1748 | ||
1749 | /* allocate receive descriptors */ | |
1750 | err = i40evf_setup_all_rx_resources(adapter); | |
1751 | if (err) | |
1752 | goto reset_err; | |
1753 | ||
1754 | i40evf_configure(adapter); | |
1755 | ||
1756 | err = i40evf_up_complete(adapter); | |
1757 | if (err) | |
1758 | goto reset_err; | |
1759 | ||
1760 | i40evf_irq_enable(adapter, true); | |
67c818a1 MW |
1761 | } else { |
1762 | adapter->state = __I40EVF_DOWN; | |
5eae00c5 | 1763 | } |
67c818a1 | 1764 | |
5eae00c5 GR |
1765 | return; |
1766 | reset_err: | |
80e72893 | 1767 | dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n"); |
5eae00c5 GR |
1768 | i40evf_close(adapter->netdev); |
1769 | } | |
1770 | ||
1771 | /** | |
1772 | * i40evf_adminq_task - worker thread to clean the admin queue | |
1773 | * @work: pointer to work_struct containing our data | |
1774 | **/ | |
1775 | static void i40evf_adminq_task(struct work_struct *work) | |
1776 | { | |
1777 | struct i40evf_adapter *adapter = | |
1778 | container_of(work, struct i40evf_adapter, adminq_task); | |
1779 | struct i40e_hw *hw = &adapter->hw; | |
1780 | struct i40e_arq_event_info event; | |
1781 | struct i40e_virtchnl_msg *v_msg; | |
1782 | i40e_status ret; | |
912257e5 | 1783 | u32 val, oldval; |
5eae00c5 GR |
1784 | u16 pending; |
1785 | ||
ef8693eb | 1786 | if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) |
7235448c | 1787 | goto out; |
ef8693eb | 1788 | |
1001dc37 MW |
1789 | event.buf_len = I40EVF_MAX_AQ_BUF_SIZE; |
1790 | event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL); | |
249c8b8d | 1791 | if (!event.msg_buf) |
7235448c | 1792 | goto out; |
249c8b8d | 1793 | |
5eae00c5 GR |
1794 | v_msg = (struct i40e_virtchnl_msg *)&event.desc; |
1795 | do { | |
1796 | ret = i40evf_clean_arq_element(hw, &event, &pending); | |
8b011ebb | 1797 | if (ret || !v_msg->v_opcode) |
5eae00c5 GR |
1798 | break; /* No event to process or error cleaning ARQ */ |
1799 | ||
1800 | i40evf_virtchnl_completion(adapter, v_msg->v_opcode, | |
1801 | v_msg->v_retval, event.msg_buf, | |
1001dc37 | 1802 | event.msg_len); |
75a64435 | 1803 | if (pending != 0) |
5eae00c5 | 1804 | memset(event.msg_buf, 0, I40EVF_MAX_AQ_BUF_SIZE); |
5eae00c5 GR |
1805 | } while (pending); |
1806 | ||
67c818a1 MW |
1807 | if ((adapter->flags & |
1808 | (I40EVF_FLAG_RESET_PENDING | I40EVF_FLAG_RESET_NEEDED)) || | |
1809 | adapter->state == __I40EVF_RESETTING) | |
1810 | goto freedom; | |
1811 | ||
912257e5 MW |
1812 | /* check for error indications */ |
1813 | val = rd32(hw, hw->aq.arq.len); | |
1814 | oldval = val; | |
b1f3366b | 1815 | if (val & I40E_VF_ARQLEN1_ARQVFE_MASK) { |
912257e5 | 1816 | dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n"); |
b1f3366b | 1817 | val &= ~I40E_VF_ARQLEN1_ARQVFE_MASK; |
912257e5 | 1818 | } |
b1f3366b | 1819 | if (val & I40E_VF_ARQLEN1_ARQOVFL_MASK) { |
912257e5 | 1820 | dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n"); |
b1f3366b | 1821 | val &= ~I40E_VF_ARQLEN1_ARQOVFL_MASK; |
912257e5 | 1822 | } |
b1f3366b | 1823 | if (val & I40E_VF_ARQLEN1_ARQCRIT_MASK) { |
912257e5 | 1824 | dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n"); |
b1f3366b | 1825 | val &= ~I40E_VF_ARQLEN1_ARQCRIT_MASK; |
912257e5 MW |
1826 | } |
1827 | if (oldval != val) | |
1828 | wr32(hw, hw->aq.arq.len, val); | |
1829 | ||
1830 | val = rd32(hw, hw->aq.asq.len); | |
1831 | oldval = val; | |
b1f3366b | 1832 | if (val & I40E_VF_ATQLEN1_ATQVFE_MASK) { |
912257e5 | 1833 | dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n"); |
b1f3366b | 1834 | val &= ~I40E_VF_ATQLEN1_ATQVFE_MASK; |
912257e5 | 1835 | } |
b1f3366b | 1836 | if (val & I40E_VF_ATQLEN1_ATQOVFL_MASK) { |
912257e5 | 1837 | dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n"); |
b1f3366b | 1838 | val &= ~I40E_VF_ATQLEN1_ATQOVFL_MASK; |
912257e5 | 1839 | } |
b1f3366b | 1840 | if (val & I40E_VF_ATQLEN1_ATQCRIT_MASK) { |
912257e5 | 1841 | dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n"); |
b1f3366b | 1842 | val &= ~I40E_VF_ATQLEN1_ATQCRIT_MASK; |
912257e5 MW |
1843 | } |
1844 | if (oldval != val) | |
1845 | wr32(hw, hw->aq.asq.len, val); | |
1846 | ||
67c818a1 | 1847 | freedom: |
7235448c MW |
1848 | kfree(event.msg_buf); |
1849 | out: | |
5eae00c5 GR |
1850 | /* re-enable Admin queue interrupt cause */ |
1851 | i40evf_misc_irq_enable(adapter); | |
5eae00c5 GR |
1852 | } |
1853 | ||
1854 | /** | |
1855 | * i40evf_free_all_tx_resources - Free Tx Resources for All Queues | |
1856 | * @adapter: board private structure | |
1857 | * | |
1858 | * Free all transmit software resources | |
1859 | **/ | |
e284fc88 | 1860 | void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter) |
5eae00c5 GR |
1861 | { |
1862 | int i; | |
1863 | ||
cc052927 | 1864 | for (i = 0; i < adapter->num_active_queues; i++) |
5eae00c5 GR |
1865 | if (adapter->tx_rings[i]->desc) |
1866 | i40evf_free_tx_resources(adapter->tx_rings[i]); | |
5eae00c5 GR |
1867 | } |
1868 | ||
1869 | /** | |
1870 | * i40evf_setup_all_tx_resources - allocate all queues Tx resources | |
1871 | * @adapter: board private structure | |
1872 | * | |
1873 | * If this function returns with an error, then it's possible one or | |
1874 | * more of the rings is populated (while the rest are not). It is the | |
1875 | * callers duty to clean those orphaned rings. | |
1876 | * | |
1877 | * Return 0 on success, negative on failure | |
1878 | **/ | |
1879 | static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter) | |
1880 | { | |
1881 | int i, err = 0; | |
1882 | ||
cc052927 | 1883 | for (i = 0; i < adapter->num_active_queues; i++) { |
d732a184 | 1884 | adapter->tx_rings[i]->count = adapter->tx_desc_count; |
5eae00c5 GR |
1885 | err = i40evf_setup_tx_descriptors(adapter->tx_rings[i]); |
1886 | if (!err) | |
1887 | continue; | |
1888 | dev_err(&adapter->pdev->dev, | |
fb43201f | 1889 | "Allocation for Tx Queue %u failed\n", i); |
5eae00c5 GR |
1890 | break; |
1891 | } | |
1892 | ||
1893 | return err; | |
1894 | } | |
1895 | ||
1896 | /** | |
1897 | * i40evf_setup_all_rx_resources - allocate all queues Rx resources | |
1898 | * @adapter: board private structure | |
1899 | * | |
1900 | * If this function returns with an error, then it's possible one or | |
1901 | * more of the rings is populated (while the rest are not). It is the | |
1902 | * callers duty to clean those orphaned rings. | |
1903 | * | |
1904 | * Return 0 on success, negative on failure | |
1905 | **/ | |
1906 | static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter) | |
1907 | { | |
1908 | int i, err = 0; | |
1909 | ||
cc052927 | 1910 | for (i = 0; i < adapter->num_active_queues; i++) { |
d732a184 | 1911 | adapter->rx_rings[i]->count = adapter->rx_desc_count; |
5eae00c5 GR |
1912 | err = i40evf_setup_rx_descriptors(adapter->rx_rings[i]); |
1913 | if (!err) | |
1914 | continue; | |
1915 | dev_err(&adapter->pdev->dev, | |
fb43201f | 1916 | "Allocation for Rx Queue %u failed\n", i); |
5eae00c5 GR |
1917 | break; |
1918 | } | |
1919 | return err; | |
1920 | } | |
1921 | ||
1922 | /** | |
1923 | * i40evf_free_all_rx_resources - Free Rx Resources for All Queues | |
1924 | * @adapter: board private structure | |
1925 | * | |
1926 | * Free all receive software resources | |
1927 | **/ | |
e284fc88 | 1928 | void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter) |
5eae00c5 GR |
1929 | { |
1930 | int i; | |
1931 | ||
cc052927 | 1932 | for (i = 0; i < adapter->num_active_queues; i++) |
5eae00c5 GR |
1933 | if (adapter->rx_rings[i]->desc) |
1934 | i40evf_free_rx_resources(adapter->rx_rings[i]); | |
1935 | } | |
1936 | ||
1937 | /** | |
1938 | * i40evf_open - Called when a network interface is made active | |
1939 | * @netdev: network interface device structure | |
1940 | * | |
1941 | * Returns 0 on success, negative value on failure | |
1942 | * | |
1943 | * The open entry point is called when a network interface is made | |
1944 | * active by the system (IFF_UP). At this point all resources needed | |
1945 | * for transmit and receive operations are allocated, the interrupt | |
1946 | * handler is registered with the OS, the watchdog timer is started, | |
1947 | * and the stack is notified that the interface is ready. | |
1948 | **/ | |
1949 | static int i40evf_open(struct net_device *netdev) | |
1950 | { | |
1951 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
1952 | int err; | |
1953 | ||
ef8693eb MW |
1954 | if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) { |
1955 | dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n"); | |
1956 | return -EIO; | |
1957 | } | |
e284fc88 | 1958 | if (adapter->state != __I40EVF_DOWN || adapter->aq_required) |
5eae00c5 GR |
1959 | return -EBUSY; |
1960 | ||
1961 | /* allocate transmit descriptors */ | |
1962 | err = i40evf_setup_all_tx_resources(adapter); | |
1963 | if (err) | |
1964 | goto err_setup_tx; | |
1965 | ||
1966 | /* allocate receive descriptors */ | |
1967 | err = i40evf_setup_all_rx_resources(adapter); | |
1968 | if (err) | |
1969 | goto err_setup_rx; | |
1970 | ||
1971 | /* clear any pending interrupts, may auto mask */ | |
1972 | err = i40evf_request_traffic_irqs(adapter, netdev->name); | |
1973 | if (err) | |
1974 | goto err_req_irq; | |
1975 | ||
44151cd3 | 1976 | i40evf_add_filter(adapter, adapter->hw.mac.addr); |
5eae00c5 GR |
1977 | i40evf_configure(adapter); |
1978 | ||
1979 | err = i40evf_up_complete(adapter); | |
1980 | if (err) | |
1981 | goto err_req_irq; | |
1982 | ||
1983 | i40evf_irq_enable(adapter, true); | |
1984 | ||
1985 | return 0; | |
1986 | ||
1987 | err_req_irq: | |
1988 | i40evf_down(adapter); | |
1989 | i40evf_free_traffic_irqs(adapter); | |
1990 | err_setup_rx: | |
1991 | i40evf_free_all_rx_resources(adapter); | |
1992 | err_setup_tx: | |
1993 | i40evf_free_all_tx_resources(adapter); | |
1994 | ||
1995 | return err; | |
1996 | } | |
1997 | ||
1998 | /** | |
1999 | * i40evf_close - Disables a network interface | |
2000 | * @netdev: network interface device structure | |
2001 | * | |
2002 | * Returns 0, this is not allowed to fail | |
2003 | * | |
2004 | * The close entry point is called when an interface is de-activated | |
2005 | * by the OS. The hardware is still under the drivers control, but | |
2006 | * needs to be disabled. All IRQs except vector 0 (reserved for admin queue) | |
2007 | * are freed, along with all transmit and receive resources. | |
2008 | **/ | |
2009 | static int i40evf_close(struct net_device *netdev) | |
2010 | { | |
2011 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2012 | ||
ef8693eb MW |
2013 | if (adapter->state <= __I40EVF_DOWN) |
2014 | return 0; | |
2015 | ||
ef8693eb | 2016 | |
5eae00c5 GR |
2017 | set_bit(__I40E_DOWN, &adapter->vsi.state); |
2018 | ||
2019 | i40evf_down(adapter); | |
ddf0b3a6 | 2020 | adapter->state = __I40EVF_DOWN; |
5eae00c5 GR |
2021 | i40evf_free_traffic_irqs(adapter); |
2022 | ||
5eae00c5 GR |
2023 | return 0; |
2024 | } | |
2025 | ||
2026 | /** | |
2027 | * i40evf_get_stats - Get System Network Statistics | |
2028 | * @netdev: network interface device structure | |
2029 | * | |
2030 | * Returns the address of the device statistics structure. | |
2031 | * The statistics are actually updated from the timer callback. | |
2032 | **/ | |
2033 | static struct net_device_stats *i40evf_get_stats(struct net_device *netdev) | |
2034 | { | |
2035 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2036 | ||
2037 | /* only return the current stats */ | |
2038 | return &adapter->net_stats; | |
2039 | } | |
2040 | ||
5eae00c5 GR |
2041 | /** |
2042 | * i40evf_change_mtu - Change the Maximum Transfer Unit | |
2043 | * @netdev: network interface device structure | |
2044 | * @new_mtu: new value for maximum frame size | |
2045 | * | |
2046 | * Returns 0 on success, negative on failure | |
2047 | **/ | |
2048 | static int i40evf_change_mtu(struct net_device *netdev, int new_mtu) | |
2049 | { | |
2050 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2051 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
2052 | ||
2053 | if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER)) | |
2054 | return -EINVAL; | |
2055 | ||
5eae00c5 | 2056 | netdev->mtu = new_mtu; |
67c818a1 MW |
2057 | adapter->flags |= I40EVF_FLAG_RESET_NEEDED; |
2058 | schedule_work(&adapter->reset_task); | |
2059 | ||
5eae00c5 GR |
2060 | return 0; |
2061 | } | |
2062 | ||
2063 | static const struct net_device_ops i40evf_netdev_ops = { | |
2064 | .ndo_open = i40evf_open, | |
2065 | .ndo_stop = i40evf_close, | |
2066 | .ndo_start_xmit = i40evf_xmit_frame, | |
2067 | .ndo_get_stats = i40evf_get_stats, | |
2068 | .ndo_set_rx_mode = i40evf_set_rx_mode, | |
2069 | .ndo_validate_addr = eth_validate_addr, | |
2070 | .ndo_set_mac_address = i40evf_set_mac, | |
2071 | .ndo_change_mtu = i40evf_change_mtu, | |
2072 | .ndo_tx_timeout = i40evf_tx_timeout, | |
2073 | .ndo_vlan_rx_add_vid = i40evf_vlan_rx_add_vid, | |
2074 | .ndo_vlan_rx_kill_vid = i40evf_vlan_rx_kill_vid, | |
7709b4c1 AD |
2075 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2076 | .ndo_poll_controller = i40evf_netpoll, | |
2077 | #endif | |
5eae00c5 GR |
2078 | }; |
2079 | ||
2080 | /** | |
2081 | * i40evf_check_reset_complete - check that VF reset is complete | |
2082 | * @hw: pointer to hw struct | |
2083 | * | |
2084 | * Returns 0 if device is ready to use, or -EBUSY if it's in reset. | |
2085 | **/ | |
2086 | static int i40evf_check_reset_complete(struct i40e_hw *hw) | |
2087 | { | |
2088 | u32 rstat; | |
2089 | int i; | |
2090 | ||
2091 | for (i = 0; i < 100; i++) { | |
fd35886a AS |
2092 | rstat = rd32(hw, I40E_VFGEN_RSTAT) & |
2093 | I40E_VFGEN_RSTAT_VFR_STATE_MASK; | |
2094 | if ((rstat == I40E_VFR_VFACTIVE) || | |
2095 | (rstat == I40E_VFR_COMPLETED)) | |
5eae00c5 | 2096 | return 0; |
f98a2006 | 2097 | usleep_range(10, 20); |
5eae00c5 GR |
2098 | } |
2099 | return -EBUSY; | |
2100 | } | |
2101 | ||
e6d038de MW |
2102 | /** |
2103 | * i40evf_process_config - Process the config information we got from the PF | |
2104 | * @adapter: board private structure | |
2105 | * | |
2106 | * Verify that we have a valid config struct, and set up our netdev features | |
2107 | * and our VSI struct. | |
2108 | **/ | |
2109 | int i40evf_process_config(struct i40evf_adapter *adapter) | |
2110 | { | |
2111 | struct net_device *netdev = adapter->netdev; | |
2112 | int i; | |
2113 | ||
2114 | /* got VF config message back from PF, now we can parse it */ | |
2115 | for (i = 0; i < adapter->vf_res->num_vsis; i++) { | |
2116 | if (adapter->vf_res->vsi_res[i].vsi_type == I40E_VSI_SRIOV) | |
2117 | adapter->vsi_res = &adapter->vf_res->vsi_res[i]; | |
2118 | } | |
2119 | if (!adapter->vsi_res) { | |
2120 | dev_err(&adapter->pdev->dev, "No LAN VSI found\n"); | |
2121 | return -ENODEV; | |
2122 | } | |
2123 | ||
2124 | if (adapter->vf_res->vf_offload_flags | |
2125 | & I40E_VIRTCHNL_VF_OFFLOAD_VLAN) { | |
cc7e406c MW |
2126 | netdev->vlan_features = netdev->features & |
2127 | ~(NETIF_F_HW_VLAN_CTAG_TX | | |
2128 | NETIF_F_HW_VLAN_CTAG_RX | | |
2129 | NETIF_F_HW_VLAN_CTAG_FILTER); | |
e6d038de MW |
2130 | netdev->features |= NETIF_F_HW_VLAN_CTAG_TX | |
2131 | NETIF_F_HW_VLAN_CTAG_RX | | |
2132 | NETIF_F_HW_VLAN_CTAG_FILTER; | |
2133 | } | |
2134 | netdev->features |= NETIF_F_HIGHDMA | | |
2135 | NETIF_F_SG | | |
2136 | NETIF_F_IP_CSUM | | |
2137 | NETIF_F_SCTP_CSUM | | |
2138 | NETIF_F_IPV6_CSUM | | |
2139 | NETIF_F_TSO | | |
2140 | NETIF_F_TSO6 | | |
2141 | NETIF_F_RXCSUM | | |
2142 | NETIF_F_GRO; | |
2143 | ||
2144 | /* copy netdev features into list of user selectable features */ | |
2145 | netdev->hw_features |= netdev->features; | |
2146 | netdev->hw_features &= ~NETIF_F_RXCSUM; | |
2147 | ||
2148 | adapter->vsi.id = adapter->vsi_res->vsi_id; | |
2149 | ||
2150 | adapter->vsi.back = adapter; | |
2151 | adapter->vsi.base_vector = 1; | |
2152 | adapter->vsi.work_limit = I40E_DEFAULT_IRQ_WORK; | |
2153 | adapter->vsi.rx_itr_setting = (I40E_ITR_DYNAMIC | | |
2154 | ITR_REG_TO_USEC(I40E_ITR_RX_DEF)); | |
2155 | adapter->vsi.tx_itr_setting = (I40E_ITR_DYNAMIC | | |
2156 | ITR_REG_TO_USEC(I40E_ITR_TX_DEF)); | |
2157 | adapter->vsi.netdev = adapter->netdev; | |
f578f5f4 | 2158 | adapter->vsi.qs_handle = adapter->vsi_res->qset_handle; |
e6d038de MW |
2159 | return 0; |
2160 | } | |
2161 | ||
5eae00c5 GR |
2162 | /** |
2163 | * i40evf_init_task - worker thread to perform delayed initialization | |
2164 | * @work: pointer to work_struct containing our data | |
2165 | * | |
2166 | * This task completes the work that was begun in probe. Due to the nature | |
2167 | * of VF-PF communications, we may need to wait tens of milliseconds to get | |
dbedd44e | 2168 | * responses back from the PF. Rather than busy-wait in probe and bog down the |
5eae00c5 GR |
2169 | * whole system, we'll do it in a task so we can sleep. |
2170 | * This task only runs during driver init. Once we've established | |
2171 | * communications with the PF driver and set up our netdev, the watchdog | |
2172 | * takes over. | |
2173 | **/ | |
2174 | static void i40evf_init_task(struct work_struct *work) | |
2175 | { | |
2176 | struct i40evf_adapter *adapter = container_of(work, | |
2177 | struct i40evf_adapter, | |
2178 | init_task.work); | |
2179 | struct net_device *netdev = adapter->netdev; | |
5eae00c5 GR |
2180 | struct i40e_hw *hw = &adapter->hw; |
2181 | struct pci_dev *pdev = adapter->pdev; | |
e6d038de | 2182 | int err, bufsz; |
5eae00c5 GR |
2183 | |
2184 | switch (adapter->state) { | |
2185 | case __I40EVF_STARTUP: | |
2186 | /* driver loaded, probe complete */ | |
ef8693eb MW |
2187 | adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED; |
2188 | adapter->flags &= ~I40EVF_FLAG_RESET_PENDING; | |
5eae00c5 GR |
2189 | err = i40e_set_mac_type(hw); |
2190 | if (err) { | |
c2a137cb MW |
2191 | dev_err(&pdev->dev, "Failed to set MAC type (%d)\n", |
2192 | err); | |
2619ef47 | 2193 | goto err; |
5eae00c5 GR |
2194 | } |
2195 | err = i40evf_check_reset_complete(hw); | |
2196 | if (err) { | |
0d9c7ea8 | 2197 | dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n", |
75a64435 | 2198 | err); |
5eae00c5 GR |
2199 | goto err; |
2200 | } | |
2201 | hw->aq.num_arq_entries = I40EVF_AQ_LEN; | |
2202 | hw->aq.num_asq_entries = I40EVF_AQ_LEN; | |
2203 | hw->aq.arq_buf_size = I40EVF_MAX_AQ_BUF_SIZE; | |
2204 | hw->aq.asq_buf_size = I40EVF_MAX_AQ_BUF_SIZE; | |
2205 | ||
2206 | err = i40evf_init_adminq(hw); | |
2207 | if (err) { | |
c2a137cb MW |
2208 | dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n", |
2209 | err); | |
5eae00c5 GR |
2210 | goto err; |
2211 | } | |
2212 | err = i40evf_send_api_ver(adapter); | |
2213 | if (err) { | |
10bdd67b | 2214 | dev_err(&pdev->dev, "Unable to send to PF (%d)\n", err); |
5eae00c5 GR |
2215 | i40evf_shutdown_adminq(hw); |
2216 | goto err; | |
2217 | } | |
2218 | adapter->state = __I40EVF_INIT_VERSION_CHECK; | |
2219 | goto restart; | |
5eae00c5 | 2220 | case __I40EVF_INIT_VERSION_CHECK: |
10bdd67b | 2221 | if (!i40evf_asq_done(hw)) { |
80e72893 | 2222 | dev_err(&pdev->dev, "Admin queue command never completed\n"); |
906a6937 MW |
2223 | i40evf_shutdown_adminq(hw); |
2224 | adapter->state = __I40EVF_STARTUP; | |
5eae00c5 | 2225 | goto err; |
10bdd67b | 2226 | } |
5eae00c5 GR |
2227 | |
2228 | /* aq msg sent, awaiting reply */ | |
2229 | err = i40evf_verify_api_ver(adapter); | |
2230 | if (err) { | |
d4f82fd3 | 2231 | if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK) |
56f9920a | 2232 | err = i40evf_send_api_ver(adapter); |
ee1693e5 MW |
2233 | else |
2234 | dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n", | |
2235 | adapter->pf_version.major, | |
2236 | adapter->pf_version.minor, | |
2237 | I40E_VIRTCHNL_VERSION_MAJOR, | |
2238 | I40E_VIRTCHNL_VERSION_MINOR); | |
5eae00c5 GR |
2239 | goto err; |
2240 | } | |
2241 | err = i40evf_send_vf_config_msg(adapter); | |
2242 | if (err) { | |
3f2ab172 | 2243 | dev_err(&pdev->dev, "Unable to send config request (%d)\n", |
5eae00c5 GR |
2244 | err); |
2245 | goto err; | |
2246 | } | |
2247 | adapter->state = __I40EVF_INIT_GET_RESOURCES; | |
2248 | goto restart; | |
5eae00c5 GR |
2249 | case __I40EVF_INIT_GET_RESOURCES: |
2250 | /* aq msg sent, awaiting reply */ | |
2251 | if (!adapter->vf_res) { | |
2252 | bufsz = sizeof(struct i40e_virtchnl_vf_resource) + | |
2253 | (I40E_MAX_VF_VSI * | |
2254 | sizeof(struct i40e_virtchnl_vsi_resource)); | |
2255 | adapter->vf_res = kzalloc(bufsz, GFP_KERNEL); | |
c2a137cb | 2256 | if (!adapter->vf_res) |
5eae00c5 | 2257 | goto err; |
5eae00c5 GR |
2258 | } |
2259 | err = i40evf_get_vf_config(adapter); | |
906a6937 | 2260 | if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK) { |
906a6937 MW |
2261 | err = i40evf_send_vf_config_msg(adapter); |
2262 | goto err; | |
2263 | } | |
5eae00c5 | 2264 | if (err) { |
c2a137cb MW |
2265 | dev_err(&pdev->dev, "Unable to get VF config (%d)\n", |
2266 | err); | |
5eae00c5 GR |
2267 | goto err_alloc; |
2268 | } | |
2269 | adapter->state = __I40EVF_INIT_SW; | |
2270 | break; | |
2271 | default: | |
2272 | goto err_alloc; | |
2273 | } | |
e6d038de | 2274 | if (i40evf_process_config(adapter)) |
5eae00c5 | 2275 | goto err_alloc; |
e6d038de | 2276 | adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN; |
5eae00c5 GR |
2277 | |
2278 | adapter->flags |= I40EVF_FLAG_RX_CSUM_ENABLED; | |
2279 | ||
5eae00c5 GR |
2280 | netdev->netdev_ops = &i40evf_netdev_ops; |
2281 | i40evf_set_ethtool_ops(netdev); | |
2282 | netdev->watchdog_timeo = 5 * HZ; | |
3415e8ce | 2283 | |
5eae00c5 | 2284 | if (!is_valid_ether_addr(adapter->hw.mac.addr)) { |
b34f90e7 | 2285 | dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n", |
c2a137cb | 2286 | adapter->hw.mac.addr); |
14e52ee2 MW |
2287 | eth_hw_addr_random(netdev); |
2288 | ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr); | |
2289 | } else { | |
2290 | adapter->flags |= I40EVF_FLAG_ADDR_SET_BY_PF; | |
2291 | ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr); | |
2292 | ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr); | |
5eae00c5 | 2293 | } |
5eae00c5 | 2294 | |
5eae00c5 GR |
2295 | init_timer(&adapter->watchdog_timer); |
2296 | adapter->watchdog_timer.function = &i40evf_watchdog_timer; | |
2297 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
2298 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
2299 | ||
cc052927 MW |
2300 | adapter->num_active_queues = min_t(int, |
2301 | adapter->vsi_res->num_queue_pairs, | |
2302 | (int)(num_online_cpus())); | |
d732a184 MW |
2303 | adapter->tx_desc_count = I40EVF_DEFAULT_TXD; |
2304 | adapter->rx_desc_count = I40EVF_DEFAULT_RXD; | |
5eae00c5 GR |
2305 | err = i40evf_init_interrupt_scheme(adapter); |
2306 | if (err) | |
2307 | goto err_sw_init; | |
2308 | i40evf_map_rings_to_vectors(adapter); | |
1f012279 ASJ |
2309 | if (adapter->vf_res->vf_offload_flags & |
2310 | I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) | |
2311 | adapter->flags |= I40EVF_FLAG_WB_ON_ITR_CAPABLE; | |
e25d00b8 ASJ |
2312 | if (!RSS_AQ(adapter)) |
2313 | i40evf_configure_rss(adapter); | |
5eae00c5 GR |
2314 | err = i40evf_request_misc_irq(adapter); |
2315 | if (err) | |
2316 | goto err_sw_init; | |
2317 | ||
2318 | netif_carrier_off(netdev); | |
2319 | ||
ef8693eb MW |
2320 | if (!adapter->netdev_registered) { |
2321 | err = register_netdev(netdev); | |
2322 | if (err) | |
2323 | goto err_register; | |
2324 | } | |
5eae00c5 GR |
2325 | |
2326 | adapter->netdev_registered = true; | |
2327 | ||
2328 | netif_tx_stop_all_queues(netdev); | |
2329 | ||
b34f90e7 | 2330 | dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr); |
5eae00c5 GR |
2331 | if (netdev->features & NETIF_F_GRO) |
2332 | dev_info(&pdev->dev, "GRO is enabled\n"); | |
2333 | ||
2334 | dev_info(&pdev->dev, "%s\n", i40evf_driver_string); | |
2335 | adapter->state = __I40EVF_DOWN; | |
2336 | set_bit(__I40E_DOWN, &adapter->vsi.state); | |
2337 | i40evf_misc_irq_enable(adapter); | |
e25d00b8 ASJ |
2338 | |
2339 | if (RSS_AQ(adapter)) { | |
2340 | adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_RSS; | |
2341 | mod_timer_pending(&adapter->watchdog_timer, jiffies + 1); | |
2342 | } else { | |
2343 | i40evf_configure_rss(adapter); | |
2344 | } | |
5eae00c5 GR |
2345 | return; |
2346 | restart: | |
5be8308b | 2347 | schedule_delayed_work(&adapter->init_task, msecs_to_jiffies(20)); |
5eae00c5 GR |
2348 | return; |
2349 | ||
2350 | err_register: | |
2351 | i40evf_free_misc_irq(adapter); | |
2352 | err_sw_init: | |
2353 | i40evf_reset_interrupt_capability(adapter); | |
5eae00c5 GR |
2354 | err_alloc: |
2355 | kfree(adapter->vf_res); | |
2356 | adapter->vf_res = NULL; | |
2357 | err: | |
2358 | /* Things went into the weeds, so try again later */ | |
2359 | if (++adapter->aq_wait_count > I40EVF_AQ_MAX_ERR) { | |
80e72893 | 2360 | dev_err(&pdev->dev, "Failed to communicate with PF; giving up\n"); |
ef8693eb | 2361 | adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED; |
5eae00c5 GR |
2362 | return; /* do not reschedule */ |
2363 | } | |
5be8308b | 2364 | schedule_delayed_work(&adapter->init_task, HZ / 2); |
5eae00c5 GR |
2365 | } |
2366 | ||
2367 | /** | |
2368 | * i40evf_shutdown - Shutdown the device in preparation for a reboot | |
2369 | * @pdev: pci device structure | |
2370 | **/ | |
2371 | static void i40evf_shutdown(struct pci_dev *pdev) | |
2372 | { | |
2373 | struct net_device *netdev = pci_get_drvdata(pdev); | |
00293fdc | 2374 | struct i40evf_adapter *adapter = netdev_priv(netdev); |
5eae00c5 GR |
2375 | |
2376 | netif_device_detach(netdev); | |
2377 | ||
2378 | if (netif_running(netdev)) | |
2379 | i40evf_close(netdev); | |
2380 | ||
00293fdc MW |
2381 | /* Prevent the watchdog from running. */ |
2382 | adapter->state = __I40EVF_REMOVE; | |
2383 | adapter->aq_required = 0; | |
00293fdc | 2384 | |
5eae00c5 GR |
2385 | #ifdef CONFIG_PM |
2386 | pci_save_state(pdev); | |
2387 | ||
2388 | #endif | |
2389 | pci_disable_device(pdev); | |
2390 | } | |
2391 | ||
2392 | /** | |
2393 | * i40evf_probe - Device Initialization Routine | |
2394 | * @pdev: PCI device information struct | |
2395 | * @ent: entry in i40evf_pci_tbl | |
2396 | * | |
2397 | * Returns 0 on success, negative on failure | |
2398 | * | |
2399 | * i40evf_probe initializes an adapter identified by a pci_dev structure. | |
2400 | * The OS initialization, configuring of the adapter private structure, | |
2401 | * and a hardware reset occur. | |
2402 | **/ | |
2403 | static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
2404 | { | |
2405 | struct net_device *netdev; | |
2406 | struct i40evf_adapter *adapter = NULL; | |
2407 | struct i40e_hw *hw = NULL; | |
dbbd8111 | 2408 | int err; |
5eae00c5 GR |
2409 | |
2410 | err = pci_enable_device(pdev); | |
2411 | if (err) | |
2412 | return err; | |
2413 | ||
6494294f | 2414 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
6494294f | 2415 | if (err) { |
e3e3bfdd JS |
2416 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
2417 | if (err) { | |
2418 | dev_err(&pdev->dev, | |
2419 | "DMA configuration failed: 0x%x\n", err); | |
2420 | goto err_dma; | |
2421 | } | |
5eae00c5 GR |
2422 | } |
2423 | ||
2424 | err = pci_request_regions(pdev, i40evf_driver_name); | |
2425 | if (err) { | |
2426 | dev_err(&pdev->dev, | |
2427 | "pci_request_regions failed 0x%x\n", err); | |
2428 | goto err_pci_reg; | |
2429 | } | |
2430 | ||
2431 | pci_enable_pcie_error_reporting(pdev); | |
2432 | ||
2433 | pci_set_master(pdev); | |
2434 | ||
2435 | netdev = alloc_etherdev_mq(sizeof(struct i40evf_adapter), | |
2436 | MAX_TX_QUEUES); | |
2437 | if (!netdev) { | |
2438 | err = -ENOMEM; | |
2439 | goto err_alloc_etherdev; | |
2440 | } | |
2441 | ||
2442 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2443 | ||
2444 | pci_set_drvdata(pdev, netdev); | |
2445 | adapter = netdev_priv(netdev); | |
5eae00c5 GR |
2446 | |
2447 | adapter->netdev = netdev; | |
2448 | adapter->pdev = pdev; | |
2449 | ||
2450 | hw = &adapter->hw; | |
2451 | hw->back = adapter; | |
2452 | ||
41a1d04b | 2453 | adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1; |
5eae00c5 GR |
2454 | adapter->state = __I40EVF_STARTUP; |
2455 | ||
2456 | /* Call save state here because it relies on the adapter struct. */ | |
2457 | pci_save_state(pdev); | |
2458 | ||
2459 | hw->hw_addr = ioremap(pci_resource_start(pdev, 0), | |
2460 | pci_resource_len(pdev, 0)); | |
2461 | if (!hw->hw_addr) { | |
2462 | err = -EIO; | |
2463 | goto err_ioremap; | |
2464 | } | |
2465 | hw->vendor_id = pdev->vendor; | |
2466 | hw->device_id = pdev->device; | |
2467 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
2468 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2469 | hw->subsystem_device_id = pdev->subsystem_device; | |
2470 | hw->bus.device = PCI_SLOT(pdev->devfn); | |
2471 | hw->bus.func = PCI_FUNC(pdev->devfn); | |
2472 | ||
8bb1a540 SK |
2473 | INIT_LIST_HEAD(&adapter->mac_filter_list); |
2474 | INIT_LIST_HEAD(&adapter->vlan_filter_list); | |
2475 | ||
5eae00c5 GR |
2476 | INIT_WORK(&adapter->reset_task, i40evf_reset_task); |
2477 | INIT_WORK(&adapter->adminq_task, i40evf_adminq_task); | |
2478 | INIT_WORK(&adapter->watchdog_task, i40evf_watchdog_task); | |
2479 | INIT_DELAYED_WORK(&adapter->init_task, i40evf_init_task); | |
9b32b0b5 MW |
2480 | schedule_delayed_work(&adapter->init_task, |
2481 | msecs_to_jiffies(5 * (pdev->devfn & 0x07))); | |
5eae00c5 GR |
2482 | |
2483 | return 0; | |
2484 | ||
2485 | err_ioremap: | |
2486 | free_netdev(netdev); | |
2487 | err_alloc_etherdev: | |
2488 | pci_release_regions(pdev); | |
2489 | err_pci_reg: | |
2490 | err_dma: | |
2491 | pci_disable_device(pdev); | |
2492 | return err; | |
2493 | } | |
2494 | ||
2495 | #ifdef CONFIG_PM | |
2496 | /** | |
2497 | * i40evf_suspend - Power management suspend routine | |
2498 | * @pdev: PCI device information struct | |
2499 | * @state: unused | |
2500 | * | |
2501 | * Called when the system (VM) is entering sleep/suspend. | |
2502 | **/ | |
2503 | static int i40evf_suspend(struct pci_dev *pdev, pm_message_t state) | |
2504 | { | |
2505 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2506 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
2507 | int retval = 0; | |
2508 | ||
2509 | netif_device_detach(netdev); | |
2510 | ||
2511 | if (netif_running(netdev)) { | |
2512 | rtnl_lock(); | |
2513 | i40evf_down(adapter); | |
2514 | rtnl_unlock(); | |
2515 | } | |
2516 | i40evf_free_misc_irq(adapter); | |
2517 | i40evf_reset_interrupt_capability(adapter); | |
2518 | ||
2519 | retval = pci_save_state(pdev); | |
2520 | if (retval) | |
2521 | return retval; | |
2522 | ||
2523 | pci_disable_device(pdev); | |
2524 | ||
2525 | return 0; | |
2526 | } | |
2527 | ||
2528 | /** | |
dbedd44e | 2529 | * i40evf_resume - Power management resume routine |
5eae00c5 GR |
2530 | * @pdev: PCI device information struct |
2531 | * | |
2532 | * Called when the system (VM) is resumed from sleep/suspend. | |
2533 | **/ | |
2534 | static int i40evf_resume(struct pci_dev *pdev) | |
2535 | { | |
2536 | struct i40evf_adapter *adapter = pci_get_drvdata(pdev); | |
2537 | struct net_device *netdev = adapter->netdev; | |
2538 | u32 err; | |
2539 | ||
2540 | pci_set_power_state(pdev, PCI_D0); | |
2541 | pci_restore_state(pdev); | |
2542 | /* pci_restore_state clears dev->state_saved so call | |
2543 | * pci_save_state to restore it. | |
2544 | */ | |
2545 | pci_save_state(pdev); | |
2546 | ||
2547 | err = pci_enable_device_mem(pdev); | |
2548 | if (err) { | |
2549 | dev_err(&pdev->dev, "Cannot enable PCI device from suspend.\n"); | |
2550 | return err; | |
2551 | } | |
2552 | pci_set_master(pdev); | |
2553 | ||
2554 | rtnl_lock(); | |
2555 | err = i40evf_set_interrupt_capability(adapter); | |
2556 | if (err) { | |
f2a1c368 | 2557 | rtnl_unlock(); |
5eae00c5 GR |
2558 | dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n"); |
2559 | return err; | |
2560 | } | |
2561 | err = i40evf_request_misc_irq(adapter); | |
2562 | rtnl_unlock(); | |
2563 | if (err) { | |
2564 | dev_err(&pdev->dev, "Cannot get interrupt vector.\n"); | |
2565 | return err; | |
2566 | } | |
2567 | ||
2568 | schedule_work(&adapter->reset_task); | |
2569 | ||
2570 | netif_device_attach(netdev); | |
2571 | ||
2572 | return err; | |
2573 | } | |
2574 | ||
2575 | #endif /* CONFIG_PM */ | |
2576 | /** | |
2577 | * i40evf_remove - Device Removal Routine | |
2578 | * @pdev: PCI device information struct | |
2579 | * | |
2580 | * i40evf_remove is called by the PCI subsystem to alert the driver | |
2581 | * that it should release a PCI device. The could be caused by a | |
2582 | * Hot-Plug event, or because the driver is going to be removed from | |
2583 | * memory. | |
2584 | **/ | |
2585 | static void i40evf_remove(struct pci_dev *pdev) | |
2586 | { | |
2587 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2588 | struct i40evf_adapter *adapter = netdev_priv(netdev); | |
6ba36a24 | 2589 | struct i40evf_mac_filter *f, *ftmp; |
5eae00c5 GR |
2590 | struct i40e_hw *hw = &adapter->hw; |
2591 | ||
2592 | cancel_delayed_work_sync(&adapter->init_task); | |
ef8693eb | 2593 | cancel_work_sync(&adapter->reset_task); |
5eae00c5 GR |
2594 | |
2595 | if (adapter->netdev_registered) { | |
2596 | unregister_netdev(netdev); | |
2597 | adapter->netdev_registered = false; | |
2598 | } | |
53d0b3ae | 2599 | |
f4a71881 | 2600 | /* Shut down all the garbage mashers on the detention level */ |
5eae00c5 | 2601 | adapter->state = __I40EVF_REMOVE; |
f4a71881 | 2602 | adapter->aq_required = 0; |
f4a71881 MW |
2603 | i40evf_request_reset(adapter); |
2604 | msleep(20); | |
2605 | /* If the FW isn't responding, kick it once, but only once. */ | |
2606 | if (!i40evf_asq_done(hw)) { | |
2607 | i40evf_request_reset(adapter); | |
2608 | msleep(20); | |
2609 | } | |
5eae00c5 | 2610 | |
dbb01c8a | 2611 | if (adapter->msix_entries) { |
5eae00c5 | 2612 | i40evf_misc_irq_disable(adapter); |
5eae00c5 | 2613 | i40evf_free_misc_irq(adapter); |
5eae00c5 | 2614 | i40evf_reset_interrupt_capability(adapter); |
d31944d6 | 2615 | i40evf_free_q_vectors(adapter); |
5eae00c5 GR |
2616 | } |
2617 | ||
e5d17c3e MW |
2618 | if (adapter->watchdog_timer.function) |
2619 | del_timer_sync(&adapter->watchdog_timer); | |
2620 | ||
dbb01c8a MW |
2621 | flush_scheduled_work(); |
2622 | ||
5eae00c5 GR |
2623 | if (hw->aq.asq.count) |
2624 | i40evf_shutdown_adminq(hw); | |
2625 | ||
2626 | iounmap(hw->hw_addr); | |
2627 | pci_release_regions(pdev); | |
2628 | ||
e284fc88 MW |
2629 | i40evf_free_all_tx_resources(adapter); |
2630 | i40evf_free_all_rx_resources(adapter); | |
5eae00c5 GR |
2631 | i40evf_free_queues(adapter); |
2632 | kfree(adapter->vf_res); | |
6ba36a24 MW |
2633 | /* If we got removed before an up/down sequence, we've got a filter |
2634 | * hanging out there that we need to get rid of. | |
2635 | */ | |
2636 | list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { | |
2637 | list_del(&f->list); | |
2638 | kfree(f); | |
2639 | } | |
37dfdf37 MW |
2640 | list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) { |
2641 | list_del(&f->list); | |
2642 | kfree(f); | |
2643 | } | |
5eae00c5 GR |
2644 | |
2645 | free_netdev(netdev); | |
2646 | ||
2647 | pci_disable_pcie_error_reporting(pdev); | |
2648 | ||
2649 | pci_disable_device(pdev); | |
2650 | } | |
2651 | ||
2652 | static struct pci_driver i40evf_driver = { | |
2653 | .name = i40evf_driver_name, | |
2654 | .id_table = i40evf_pci_tbl, | |
2655 | .probe = i40evf_probe, | |
2656 | .remove = i40evf_remove, | |
2657 | #ifdef CONFIG_PM | |
2658 | .suspend = i40evf_suspend, | |
2659 | .resume = i40evf_resume, | |
2660 | #endif | |
2661 | .shutdown = i40evf_shutdown, | |
2662 | }; | |
2663 | ||
2664 | /** | |
2665 | * i40e_init_module - Driver Registration Routine | |
2666 | * | |
2667 | * i40e_init_module is the first routine called when the driver is | |
2668 | * loaded. All it does is register with the PCI subsystem. | |
2669 | **/ | |
2670 | static int __init i40evf_init_module(void) | |
2671 | { | |
2672 | int ret; | |
75a64435 | 2673 | |
5eae00c5 | 2674 | pr_info("i40evf: %s - version %s\n", i40evf_driver_string, |
75a64435 | 2675 | i40evf_driver_version); |
5eae00c5 GR |
2676 | |
2677 | pr_info("%s\n", i40evf_copyright); | |
2678 | ||
2679 | ret = pci_register_driver(&i40evf_driver); | |
2680 | return ret; | |
2681 | } | |
2682 | ||
2683 | module_init(i40evf_init_module); | |
2684 | ||
2685 | /** | |
2686 | * i40e_exit_module - Driver Exit Cleanup Routine | |
2687 | * | |
2688 | * i40e_exit_module is called just before the driver is removed | |
2689 | * from memory. | |
2690 | **/ | |
2691 | static void __exit i40evf_exit_module(void) | |
2692 | { | |
2693 | pci_unregister_driver(&i40evf_driver); | |
2694 | } | |
2695 | ||
2696 | module_exit(i40evf_exit_module); | |
2697 | ||
2698 | /* i40evf_main.c */ |