1 /*******************************************************************************
3 * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
4 * Copyright(c) 2013 - 2014 Intel Corporation.
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.
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
15 * The full GNU General Public License is included in this distribution in
16 * the file called "COPYING".
18 * Contact Information:
19 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
20 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
22 ******************************************************************************/
25 #include "i40e_prototype.h"
26 static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter);
27 static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter);
28 static int i40evf_close(struct net_device *netdev);
30 char i40evf_driver_name[] = "i40evf";
31 static const char i40evf_driver_string[] =
32 "Intel(R) XL710 X710 Virtual Function Network Driver";
34 #define DRV_VERSION "0.9.14"
35 const char i40evf_driver_version[] = DRV_VERSION;
36 static const char i40evf_copyright[] =
37 "Copyright (c) 2013 - 2014 Intel Corporation.";
39 /* i40evf_pci_tbl - PCI Device ID Table
41 * Wildcard entries (PCI_ANY_ID) should come last
42 * Last entry must be all 0s
44 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
45 * Class, Class Mask, private data (not used) }
47 static DEFINE_PCI_DEVICE_TABLE(i40evf_pci_tbl) = {
48 {PCI_VDEVICE(INTEL, I40E_DEV_ID_VF), 0},
49 /* required last entry */
53 MODULE_DEVICE_TABLE(pci, i40evf_pci_tbl);
55 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
56 MODULE_DESCRIPTION("Intel(R) XL710 X710 Virtual Function Network Driver");
57 MODULE_LICENSE("GPL");
58 MODULE_VERSION(DRV_VERSION);
61 * i40evf_allocate_dma_mem_d - OS specific memory alloc for shared code
62 * @hw: pointer to the HW structure
63 * @mem: ptr to mem struct to fill out
64 * @size: size of memory requested
65 * @alignment: what to align the allocation to
67 i40e_status i40evf_allocate_dma_mem_d(struct i40e_hw *hw,
68 struct i40e_dma_mem *mem,
69 u64 size, u32 alignment)
71 struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back;
74 return I40E_ERR_PARAM;
76 mem->size = ALIGN(size, alignment);
77 mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size,
78 (dma_addr_t *)&mem->pa, GFP_KERNEL);
82 return I40E_ERR_NO_MEMORY;
86 * i40evf_free_dma_mem_d - OS specific memory free for shared code
87 * @hw: pointer to the HW structure
88 * @mem: ptr to mem struct to free
90 i40e_status i40evf_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
92 struct i40evf_adapter *adapter = (struct i40evf_adapter *)hw->back;
95 return I40E_ERR_PARAM;
96 dma_free_coherent(&adapter->pdev->dev, mem->size,
97 mem->va, (dma_addr_t)mem->pa);
102 * i40evf_allocate_virt_mem_d - OS specific memory alloc for shared code
103 * @hw: pointer to the HW structure
104 * @mem: ptr to mem struct to fill out
105 * @size: size of memory requested
107 i40e_status i40evf_allocate_virt_mem_d(struct i40e_hw *hw,
108 struct i40e_virt_mem *mem, u32 size)
111 return I40E_ERR_PARAM;
114 mem->va = kzalloc(size, GFP_KERNEL);
119 return I40E_ERR_NO_MEMORY;
123 * i40evf_free_virt_mem_d - OS specific memory free for shared code
124 * @hw: pointer to the HW structure
125 * @mem: ptr to mem struct to free
127 i40e_status i40evf_free_virt_mem_d(struct i40e_hw *hw,
128 struct i40e_virt_mem *mem)
131 return I40E_ERR_PARAM;
133 /* it's ok to kfree a NULL pointer */
140 * i40evf_debug_d - OS dependent version of debug printing
141 * @hw: pointer to the HW structure
142 * @mask: debug level mask
143 * @fmt_str: printf-type format description
145 void i40evf_debug_d(void *hw, u32 mask, char *fmt_str, ...)
150 if (!(mask & ((struct i40e_hw *)hw)->debug_mask))
153 va_start(argptr, fmt_str);
154 vsnprintf(buf, sizeof(buf), fmt_str, argptr);
157 /* the debug string is already formatted with a newline */
162 * i40evf_tx_timeout - Respond to a Tx Hang
163 * @netdev: network interface device structure
165 static void i40evf_tx_timeout(struct net_device *netdev)
167 struct i40evf_adapter *adapter = netdev_priv(netdev);
169 adapter->tx_timeout_count++;
170 dev_info(&adapter->pdev->dev, "TX timeout detected.\n");
171 if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING)) {
172 dev_info(&adapter->pdev->dev, "Requesting reset from PF\n");
173 i40evf_request_reset(adapter);
174 adapter->flags |= I40EVF_FLAG_RESET_PENDING;
175 schedule_work(&adapter->reset_task);
180 * i40evf_misc_irq_disable - Mask off interrupt generation on the NIC
181 * @adapter: board private structure
183 static void i40evf_misc_irq_disable(struct i40evf_adapter *adapter)
185 struct i40e_hw *hw = &adapter->hw;
186 wr32(hw, I40E_VFINT_DYN_CTL01, 0);
189 rd32(hw, I40E_VFGEN_RSTAT);
191 synchronize_irq(adapter->msix_entries[0].vector);
195 * i40evf_misc_irq_enable - Enable default interrupt generation settings
196 * @adapter: board private structure
198 static void i40evf_misc_irq_enable(struct i40evf_adapter *adapter)
200 struct i40e_hw *hw = &adapter->hw;
201 wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK |
202 I40E_VFINT_DYN_CTL01_ITR_INDX_MASK);
203 wr32(hw, I40E_VFINT_ICR0_ENA1, I40E_VFINT_ICR0_ENA_ADMINQ_MASK);
206 rd32(hw, I40E_VFGEN_RSTAT);
210 * i40evf_irq_disable - Mask off interrupt generation on the NIC
211 * @adapter: board private structure
213 static void i40evf_irq_disable(struct i40evf_adapter *adapter)
216 struct i40e_hw *hw = &adapter->hw;
218 if (!adapter->msix_entries)
221 for (i = 1; i < adapter->num_msix_vectors; i++) {
222 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), 0);
223 synchronize_irq(adapter->msix_entries[i].vector);
226 rd32(hw, I40E_VFGEN_RSTAT);
231 * i40evf_irq_enable_queues - Enable interrupt for specified queues
232 * @adapter: board private structure
233 * @mask: bitmap of queues to enable
235 void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask)
237 struct i40e_hw *hw = &adapter->hw;
240 for (i = 1; i < adapter->num_msix_vectors; i++) {
241 if (mask & (1 << (i - 1))) {
242 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1),
243 I40E_VFINT_DYN_CTLN1_INTENA_MASK |
244 I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
250 * i40evf_fire_sw_int - Generate SW interrupt for specified vectors
251 * @adapter: board private structure
252 * @mask: bitmap of vectors to trigger
254 static void i40evf_fire_sw_int(struct i40evf_adapter *adapter,
257 struct i40e_hw *hw = &adapter->hw;
261 for (i = 1; i < adapter->num_msix_vectors; i++) {
262 if (mask & (1 << i)) {
263 dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTLN1(i - 1));
264 dyn_ctl |= I40E_VFINT_DYN_CTLN_SWINT_TRIG_MASK |
265 I40E_VFINT_DYN_CTLN_CLEARPBA_MASK;
266 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), dyn_ctl);
272 * i40evf_irq_enable - Enable default interrupt generation settings
273 * @adapter: board private structure
275 void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush)
277 struct i40e_hw *hw = &adapter->hw;
279 i40evf_irq_enable_queues(adapter, ~0);
282 rd32(hw, I40E_VFGEN_RSTAT);
286 * i40evf_msix_aq - Interrupt handler for vector 0
287 * @irq: interrupt number
288 * @data: pointer to netdev
290 static irqreturn_t i40evf_msix_aq(int irq, void *data)
292 struct net_device *netdev = data;
293 struct i40evf_adapter *adapter = netdev_priv(netdev);
294 struct i40e_hw *hw = &adapter->hw;
298 /* handle non-queue interrupts */
299 val = rd32(hw, I40E_VFINT_ICR01);
300 ena_mask = rd32(hw, I40E_VFINT_ICR0_ENA1);
303 val = rd32(hw, I40E_VFINT_DYN_CTL01);
304 val = val | I40E_PFINT_DYN_CTL0_CLEARPBA_MASK;
305 wr32(hw, I40E_VFINT_DYN_CTL01, val);
307 /* re-enable interrupt causes */
308 wr32(hw, I40E_VFINT_ICR0_ENA1, ena_mask);
309 wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK);
311 /* schedule work on the private workqueue */
312 schedule_work(&adapter->adminq_task);
318 * i40evf_msix_clean_rings - MSIX mode Interrupt Handler
319 * @irq: interrupt number
320 * @data: pointer to a q_vector
322 static irqreturn_t i40evf_msix_clean_rings(int irq, void *data)
324 struct i40e_q_vector *q_vector = data;
326 if (!q_vector->tx.ring && !q_vector->rx.ring)
329 napi_schedule(&q_vector->napi);
335 * i40evf_map_vector_to_rxq - associate irqs with rx queues
336 * @adapter: board private structure
337 * @v_idx: interrupt number
338 * @r_idx: queue number
341 i40evf_map_vector_to_rxq(struct i40evf_adapter *adapter, int v_idx, int r_idx)
343 struct i40e_q_vector *q_vector = adapter->q_vector[v_idx];
344 struct i40e_ring *rx_ring = adapter->rx_rings[r_idx];
346 rx_ring->q_vector = q_vector;
347 rx_ring->next = q_vector->rx.ring;
348 rx_ring->vsi = &adapter->vsi;
349 q_vector->rx.ring = rx_ring;
350 q_vector->rx.count++;
351 q_vector->rx.latency_range = I40E_LOW_LATENCY;
355 * i40evf_map_vector_to_txq - associate irqs with tx queues
356 * @adapter: board private structure
357 * @v_idx: interrupt number
358 * @t_idx: queue number
361 i40evf_map_vector_to_txq(struct i40evf_adapter *adapter, int v_idx, int t_idx)
363 struct i40e_q_vector *q_vector = adapter->q_vector[v_idx];
364 struct i40e_ring *tx_ring = adapter->tx_rings[t_idx];
366 tx_ring->q_vector = q_vector;
367 tx_ring->next = q_vector->tx.ring;
368 tx_ring->vsi = &adapter->vsi;
369 q_vector->tx.ring = tx_ring;
370 q_vector->tx.count++;
371 q_vector->tx.latency_range = I40E_LOW_LATENCY;
372 q_vector->num_ringpairs++;
373 q_vector->ring_mask |= (1 << t_idx);
377 * i40evf_map_rings_to_vectors - Maps descriptor rings to vectors
378 * @adapter: board private structure to initialize
380 * This function maps descriptor rings to the queue-specific vectors
381 * we were allotted through the MSI-X enabling code. Ideally, we'd have
382 * one vector per ring/queue, but on a constrained vector budget, we
383 * group the rings as "efficiently" as possible. You would add new
384 * mapping configurations in here.
386 static int i40evf_map_rings_to_vectors(struct i40evf_adapter *adapter)
390 int rxr_idx = 0, txr_idx = 0;
391 int rxr_remaining = adapter->vsi_res->num_queue_pairs;
392 int txr_remaining = adapter->vsi_res->num_queue_pairs;
397 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
399 /* The ideal configuration...
400 * We have enough vectors to map one per queue.
402 if (q_vectors == (rxr_remaining * 2)) {
403 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
404 i40evf_map_vector_to_rxq(adapter, v_start, rxr_idx);
406 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
407 i40evf_map_vector_to_txq(adapter, v_start, txr_idx);
411 /* If we don't have enough vectors for a 1-to-1
412 * mapping, we'll have to group them so there are
413 * multiple queues per vector.
414 * Re-adjusting *qpv takes care of the remainder.
416 for (i = v_start; i < q_vectors; i++) {
417 rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i);
418 for (j = 0; j < rqpv; j++) {
419 i40evf_map_vector_to_rxq(adapter, i, rxr_idx);
424 for (i = v_start; i < q_vectors; i++) {
425 tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i);
426 for (j = 0; j < tqpv; j++) {
427 i40evf_map_vector_to_txq(adapter, i, txr_idx);
434 adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS;
440 * i40evf_request_traffic_irqs - Initialize MSI-X interrupts
441 * @adapter: board private structure
443 * Allocates MSI-X vectors for tx and rx handling, and requests
444 * interrupts from the kernel.
447 i40evf_request_traffic_irqs(struct i40evf_adapter *adapter, char *basename)
449 int vector, err, q_vectors;
450 int rx_int_idx = 0, tx_int_idx = 0;
452 i40evf_irq_disable(adapter);
453 /* Decrement for Other and TCP Timer vectors */
454 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
456 for (vector = 0; vector < q_vectors; vector++) {
457 struct i40e_q_vector *q_vector = adapter->q_vector[vector];
459 if (q_vector->tx.ring && q_vector->rx.ring) {
460 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
461 "i40evf-%s-%s-%d", basename,
462 "TxRx", rx_int_idx++);
464 } else if (q_vector->rx.ring) {
465 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
466 "i40evf-%s-%s-%d", basename,
468 } else if (q_vector->tx.ring) {
469 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
470 "i40evf-%s-%s-%d", basename,
473 /* skip this unused q_vector */
477 adapter->msix_entries[vector + NONQ_VECS].vector,
478 i40evf_msix_clean_rings,
483 dev_info(&adapter->pdev->dev,
484 "%s: request_irq failed, error: %d\n",
486 goto free_queue_irqs;
488 /* assign the mask for this irq */
489 irq_set_affinity_hint(
490 adapter->msix_entries[vector + NONQ_VECS].vector,
491 q_vector->affinity_mask);
499 irq_set_affinity_hint(
500 adapter->msix_entries[vector + NONQ_VECS].vector,
502 free_irq(adapter->msix_entries[vector + NONQ_VECS].vector,
503 adapter->q_vector[vector]);
509 * i40evf_request_misc_irq - Initialize MSI-X interrupts
510 * @adapter: board private structure
512 * Allocates MSI-X vector 0 and requests interrupts from the kernel. This
513 * vector is only for the admin queue, and stays active even when the netdev
516 static int i40evf_request_misc_irq(struct i40evf_adapter *adapter)
518 struct net_device *netdev = adapter->netdev;
521 sprintf(adapter->misc_vector_name, "i40evf:mbx");
522 err = request_irq(adapter->msix_entries[0].vector,
524 adapter->misc_vector_name, netdev);
526 dev_err(&adapter->pdev->dev,
527 "request_irq for %s failed: %d\n",
528 adapter->misc_vector_name, err);
529 free_irq(adapter->msix_entries[0].vector, netdev);
535 * i40evf_free_traffic_irqs - Free MSI-X interrupts
536 * @adapter: board private structure
538 * Frees all MSI-X vectors other than 0.
540 static void i40evf_free_traffic_irqs(struct i40evf_adapter *adapter)
544 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
546 for (i = 0; i < q_vectors; i++) {
547 irq_set_affinity_hint(adapter->msix_entries[i+1].vector,
549 free_irq(adapter->msix_entries[i+1].vector,
550 adapter->q_vector[i]);
555 * i40evf_free_misc_irq - Free MSI-X miscellaneous vector
556 * @adapter: board private structure
558 * Frees MSI-X vector 0.
560 static void i40evf_free_misc_irq(struct i40evf_adapter *adapter)
562 struct net_device *netdev = adapter->netdev;
564 free_irq(adapter->msix_entries[0].vector, netdev);
568 * i40evf_configure_tx - Configure Transmit Unit after Reset
569 * @adapter: board private structure
571 * Configure the Tx unit of the MAC after a reset.
573 static void i40evf_configure_tx(struct i40evf_adapter *adapter)
575 struct i40e_hw *hw = &adapter->hw;
577 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
578 adapter->tx_rings[i]->tail = hw->hw_addr + I40E_QTX_TAIL1(i);
582 * i40evf_configure_rx - Configure Receive Unit after Reset
583 * @adapter: board private structure
585 * Configure the Rx unit of the MAC after a reset.
587 static void i40evf_configure_rx(struct i40evf_adapter *adapter)
589 struct i40e_hw *hw = &adapter->hw;
590 struct net_device *netdev = adapter->netdev;
591 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
596 adapter->flags &= ~I40EVF_FLAG_RX_PS_CAPABLE;
597 adapter->flags |= I40EVF_FLAG_RX_1BUF_CAPABLE;
599 /* Decide whether to use packet split mode or not */
600 if (netdev->mtu > ETH_DATA_LEN) {
601 if (adapter->flags & I40EVF_FLAG_RX_PS_CAPABLE)
602 adapter->flags |= I40EVF_FLAG_RX_PS_ENABLED;
604 adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED;
606 if (adapter->flags & I40EVF_FLAG_RX_1BUF_CAPABLE)
607 adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED;
609 adapter->flags |= I40EVF_FLAG_RX_PS_ENABLED;
612 /* Set the RX buffer length according to the mode */
613 if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED) {
614 rx_buf_len = I40E_RX_HDR_SIZE;
616 if (netdev->mtu <= ETH_DATA_LEN)
617 rx_buf_len = I40EVF_RXBUFFER_2048;
619 rx_buf_len = ALIGN(max_frame, 1024);
622 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
623 adapter->rx_rings[i]->tail = hw->hw_addr + I40E_QRX_TAIL1(i);
624 adapter->rx_rings[i]->rx_buf_len = rx_buf_len;
629 * i40evf_find_vlan - Search filter list for specific vlan filter
630 * @adapter: board private structure
633 * Returns ptr to the filter object or NULL
636 i40evf_vlan_filter *i40evf_find_vlan(struct i40evf_adapter *adapter, u16 vlan)
638 struct i40evf_vlan_filter *f;
640 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
648 * i40evf_add_vlan - Add a vlan filter to the list
649 * @adapter: board private structure
652 * Returns ptr to the filter object or NULL when no memory available.
655 i40evf_vlan_filter *i40evf_add_vlan(struct i40evf_adapter *adapter, u16 vlan)
657 struct i40evf_vlan_filter *f;
659 f = i40evf_find_vlan(adapter, vlan);
661 f = kzalloc(sizeof(*f), GFP_ATOMIC);
663 dev_info(&adapter->pdev->dev,
664 "%s: no memory for new VLAN filter\n",
670 INIT_LIST_HEAD(&f->list);
671 list_add(&f->list, &adapter->vlan_filter_list);
673 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
680 * i40evf_del_vlan - Remove a vlan filter from the list
681 * @adapter: board private structure
684 static void i40evf_del_vlan(struct i40evf_adapter *adapter, u16 vlan)
686 struct i40evf_vlan_filter *f;
688 f = i40evf_find_vlan(adapter, vlan);
691 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
697 * i40evf_vlan_rx_add_vid - Add a VLAN filter to a device
698 * @netdev: network device struct
701 static int i40evf_vlan_rx_add_vid(struct net_device *netdev,
702 __always_unused __be16 proto, u16 vid)
704 struct i40evf_adapter *adapter = netdev_priv(netdev);
706 if (i40evf_add_vlan(adapter, vid) == NULL)
712 * i40evf_vlan_rx_kill_vid - Remove a VLAN filter from a device
713 * @netdev: network device struct
716 static int i40evf_vlan_rx_kill_vid(struct net_device *netdev,
717 __always_unused __be16 proto, u16 vid)
719 struct i40evf_adapter *adapter = netdev_priv(netdev);
721 i40evf_del_vlan(adapter, vid);
726 * i40evf_find_filter - Search filter list for specific mac filter
727 * @adapter: board private structure
728 * @macaddr: the MAC address
730 * Returns ptr to the filter object or NULL
733 i40evf_mac_filter *i40evf_find_filter(struct i40evf_adapter *adapter,
736 struct i40evf_mac_filter *f;
741 list_for_each_entry(f, &adapter->mac_filter_list, list) {
742 if (ether_addr_equal(macaddr, f->macaddr))
749 * i40e_add_filter - Add a mac filter to the filter list
750 * @adapter: board private structure
751 * @macaddr: the MAC address
753 * Returns ptr to the filter object or NULL when no memory available.
756 i40evf_mac_filter *i40evf_add_filter(struct i40evf_adapter *adapter,
759 struct i40evf_mac_filter *f;
764 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
765 &adapter->crit_section))
768 f = i40evf_find_filter(adapter, macaddr);
770 f = kzalloc(sizeof(*f), GFP_ATOMIC);
772 dev_info(&adapter->pdev->dev,
773 "%s: no memory for new filter\n", __func__);
774 clear_bit(__I40EVF_IN_CRITICAL_TASK,
775 &adapter->crit_section);
779 memcpy(f->macaddr, macaddr, ETH_ALEN);
781 list_add(&f->list, &adapter->mac_filter_list);
783 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
786 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
791 * i40evf_set_mac - NDO callback to set port mac address
792 * @netdev: network interface device structure
793 * @p: pointer to an address structure
795 * Returns 0 on success, negative on failure
797 static int i40evf_set_mac(struct net_device *netdev, void *p)
799 struct i40evf_adapter *adapter = netdev_priv(netdev);
800 struct i40e_hw *hw = &adapter->hw;
801 struct i40evf_mac_filter *f;
802 struct sockaddr *addr = p;
804 if (!is_valid_ether_addr(addr->sa_data))
805 return -EADDRNOTAVAIL;
807 if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
810 f = i40evf_add_filter(adapter, addr->sa_data);
812 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
813 memcpy(netdev->dev_addr, adapter->hw.mac.addr,
817 return (f == NULL) ? -ENOMEM : 0;
821 * i40evf_set_rx_mode - NDO callback to set the netdev filters
822 * @netdev: network interface device structure
824 static void i40evf_set_rx_mode(struct net_device *netdev)
826 struct i40evf_adapter *adapter = netdev_priv(netdev);
827 struct i40evf_mac_filter *f, *ftmp;
828 struct netdev_hw_addr *uca;
829 struct netdev_hw_addr *mca;
831 /* add addr if not already in the filter list */
832 netdev_for_each_uc_addr(uca, netdev) {
833 i40evf_add_filter(adapter, uca->addr);
835 netdev_for_each_mc_addr(mca, netdev) {
836 i40evf_add_filter(adapter, mca->addr);
839 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
840 &adapter->crit_section))
842 /* remove filter if not in netdev list */
843 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
846 if (f->macaddr[0] & 0x01) {
847 netdev_for_each_mc_addr(mca, netdev) {
848 if (ether_addr_equal(mca->addr, f->macaddr)) {
854 netdev_for_each_uc_addr(uca, netdev) {
855 if (ether_addr_equal(uca->addr, f->macaddr)) {
863 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
866 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
870 * i40evf_napi_enable_all - enable NAPI on all queue vectors
871 * @adapter: board private structure
873 static void i40evf_napi_enable_all(struct i40evf_adapter *adapter)
876 struct i40e_q_vector *q_vector;
877 int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
879 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
880 struct napi_struct *napi;
881 q_vector = adapter->q_vector[q_idx];
882 napi = &q_vector->napi;
888 * i40evf_napi_disable_all - disable NAPI on all queue vectors
889 * @adapter: board private structure
891 static void i40evf_napi_disable_all(struct i40evf_adapter *adapter)
894 struct i40e_q_vector *q_vector;
895 int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
897 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
898 q_vector = adapter->q_vector[q_idx];
899 napi_disable(&q_vector->napi);
904 * i40evf_configure - set up transmit and receive data structures
905 * @adapter: board private structure
907 static void i40evf_configure(struct i40evf_adapter *adapter)
909 struct net_device *netdev = adapter->netdev;
912 i40evf_set_rx_mode(netdev);
914 i40evf_configure_tx(adapter);
915 i40evf_configure_rx(adapter);
916 adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES;
918 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
919 struct i40e_ring *ring = adapter->rx_rings[i];
920 i40evf_alloc_rx_buffers(ring, ring->count);
921 ring->next_to_use = ring->count - 1;
922 writel(ring->next_to_use, ring->tail);
927 * i40evf_up_complete - Finish the last steps of bringing up a connection
928 * @adapter: board private structure
930 static int i40evf_up_complete(struct i40evf_adapter *adapter)
932 adapter->state = __I40EVF_RUNNING;
933 clear_bit(__I40E_DOWN, &adapter->vsi.state);
935 i40evf_napi_enable_all(adapter);
937 adapter->aq_required |= I40EVF_FLAG_AQ_ENABLE_QUEUES;
938 mod_timer_pending(&adapter->watchdog_timer, jiffies + 1);
943 * i40evf_clean_all_rx_rings - Free Rx Buffers for all queues
944 * @adapter: board private structure
946 static void i40evf_clean_all_rx_rings(struct i40evf_adapter *adapter)
950 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
951 i40evf_clean_rx_ring(adapter->rx_rings[i]);
955 * i40evf_clean_all_tx_rings - Free Tx Buffers for all queues
956 * @adapter: board private structure
958 static void i40evf_clean_all_tx_rings(struct i40evf_adapter *adapter)
962 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
963 i40evf_clean_tx_ring(adapter->tx_rings[i]);
967 * i40e_down - Shutdown the connection processing
968 * @adapter: board private structure
970 void i40evf_down(struct i40evf_adapter *adapter)
972 struct net_device *netdev = adapter->netdev;
973 struct i40evf_mac_filter *f;
975 /* remove all MAC filters */
976 list_for_each_entry(f, &adapter->mac_filter_list, list) {
979 /* remove all VLAN filters */
980 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
983 if (!(adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) &&
984 adapter->state != __I40EVF_RESETTING) {
985 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
986 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
987 /* disable receives */
988 adapter->aq_required |= I40EVF_FLAG_AQ_DISABLE_QUEUES;
989 mod_timer_pending(&adapter->watchdog_timer, jiffies + 1);
992 netif_tx_disable(netdev);
994 netif_tx_stop_all_queues(netdev);
996 i40evf_irq_disable(adapter);
998 i40evf_napi_disable_all(adapter);
1000 netif_carrier_off(netdev);
1002 i40evf_clean_all_tx_rings(adapter);
1003 i40evf_clean_all_rx_rings(adapter);
1007 * i40evf_acquire_msix_vectors - Setup the MSIX capability
1008 * @adapter: board private structure
1009 * @vectors: number of vectors to request
1011 * Work with the OS to set up the MSIX vectors needed.
1013 * Returns 0 on success, negative on failure
1016 i40evf_acquire_msix_vectors(struct i40evf_adapter *adapter, int vectors)
1018 int err, vector_threshold;
1020 /* We'll want at least 3 (vector_threshold):
1021 * 0) Other (Admin Queue and link, mostly)
1025 vector_threshold = MIN_MSIX_COUNT;
1027 /* The more we get, the more we will assign to Tx/Rx Cleanup
1028 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1029 * Right now, we simply care about how many we'll get; we'll
1030 * set them up later while requesting irq's.
1032 while (vectors >= vector_threshold) {
1033 err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1035 if (!err) /* Success in acquiring all requested vectors. */
1038 vectors = 0; /* Nasty failure, quit now */
1039 else /* err == number of vectors we should try again with */
1043 if (vectors < vector_threshold) {
1044 dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts.\n");
1045 kfree(adapter->msix_entries);
1046 adapter->msix_entries = NULL;
1049 /* Adjust for only the vectors we'll use, which is minimum
1050 * of max_msix_q_vectors + NONQ_VECS, or the number of
1051 * vectors we were allocated.
1053 adapter->num_msix_vectors = vectors;
1059 * i40evf_free_queues - Free memory for all rings
1060 * @adapter: board private structure to initialize
1062 * Free all of the memory associated with queue pairs.
1064 static void i40evf_free_queues(struct i40evf_adapter *adapter)
1068 if (!adapter->vsi_res)
1070 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
1071 if (adapter->tx_rings[i])
1072 kfree_rcu(adapter->tx_rings[i], rcu);
1073 adapter->tx_rings[i] = NULL;
1074 adapter->rx_rings[i] = NULL;
1079 * i40evf_alloc_queues - Allocate memory for all rings
1080 * @adapter: board private structure to initialize
1082 * We allocate one ring per queue at run-time since we don't know the
1083 * number of queues at compile-time. The polling_netdev array is
1084 * intended for Multiqueue, but should work fine with a single queue.
1086 static int i40evf_alloc_queues(struct i40evf_adapter *adapter)
1090 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
1091 struct i40e_ring *tx_ring;
1092 struct i40e_ring *rx_ring;
1094 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
1098 tx_ring->queue_index = i;
1099 tx_ring->netdev = adapter->netdev;
1100 tx_ring->dev = &adapter->pdev->dev;
1101 tx_ring->count = I40EVF_DEFAULT_TXD;
1102 adapter->tx_rings[i] = tx_ring;
1104 rx_ring = &tx_ring[1];
1105 rx_ring->queue_index = i;
1106 rx_ring->netdev = adapter->netdev;
1107 rx_ring->dev = &adapter->pdev->dev;
1108 rx_ring->count = I40EVF_DEFAULT_RXD;
1109 adapter->rx_rings[i] = rx_ring;
1115 i40evf_free_queues(adapter);
1120 * i40evf_set_interrupt_capability - set MSI-X or FAIL if not supported
1121 * @adapter: board private structure to initialize
1123 * Attempt to configure the interrupts using the best available
1124 * capabilities of the hardware and the kernel.
1126 static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter)
1128 int vector, v_budget;
1132 if (!adapter->vsi_res) {
1136 pairs = adapter->vsi_res->num_queue_pairs;
1138 /* It's easy to be greedy for MSI-X vectors, but it really
1139 * doesn't do us much good if we have a lot more vectors
1140 * than CPU's. So let's be conservative and only ask for
1141 * (roughly) twice the number of vectors as there are CPU's.
1143 v_budget = min(pairs, (int)(num_online_cpus() * 2)) + NONQ_VECS;
1144 v_budget = min(v_budget, (int)adapter->vf_res->max_vectors);
1146 /* A failure in MSI-X entry allocation isn't fatal, but it does
1147 * mean we disable MSI-X capabilities of the adapter.
1149 adapter->msix_entries = kcalloc(v_budget,
1150 sizeof(struct msix_entry), GFP_KERNEL);
1151 if (!adapter->msix_entries) {
1156 for (vector = 0; vector < v_budget; vector++)
1157 adapter->msix_entries[vector].entry = vector;
1159 i40evf_acquire_msix_vectors(adapter, v_budget);
1162 adapter->netdev->real_num_tx_queues = pairs;
1167 * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors
1168 * @adapter: board private structure to initialize
1170 * We allocate one q_vector per queue interrupt. If allocation fails we
1173 static int i40evf_alloc_q_vectors(struct i40evf_adapter *adapter)
1175 int q_idx, num_q_vectors;
1176 struct i40e_q_vector *q_vector;
1178 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
1180 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
1181 q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
1184 q_vector->adapter = adapter;
1185 q_vector->vsi = &adapter->vsi;
1186 q_vector->v_idx = q_idx;
1187 netif_napi_add(adapter->netdev, &q_vector->napi,
1188 i40evf_napi_poll, 64);
1189 adapter->q_vector[q_idx] = q_vector;
1197 q_vector = adapter->q_vector[q_idx];
1198 netif_napi_del(&q_vector->napi);
1200 adapter->q_vector[q_idx] = NULL;
1206 * i40evf_free_q_vectors - Free memory allocated for interrupt vectors
1207 * @adapter: board private structure to initialize
1209 * This function frees the memory allocated to the q_vectors. In addition if
1210 * NAPI is enabled it will delete any references to the NAPI struct prior
1211 * to freeing the q_vector.
1213 static void i40evf_free_q_vectors(struct i40evf_adapter *adapter)
1215 int q_idx, num_q_vectors;
1218 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
1219 napi_vectors = adapter->vsi_res->num_queue_pairs;
1221 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
1222 struct i40e_q_vector *q_vector = adapter->q_vector[q_idx];
1224 adapter->q_vector[q_idx] = NULL;
1225 if (q_idx < napi_vectors)
1226 netif_napi_del(&q_vector->napi);
1232 * i40evf_reset_interrupt_capability - Reset MSIX setup
1233 * @adapter: board private structure
1236 void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter)
1238 pci_disable_msix(adapter->pdev);
1239 kfree(adapter->msix_entries);
1240 adapter->msix_entries = NULL;
1246 * i40evf_init_interrupt_scheme - Determine if MSIX is supported and init
1247 * @adapter: board private structure to initialize
1250 int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter)
1254 err = i40evf_set_interrupt_capability(adapter);
1256 dev_err(&adapter->pdev->dev,
1257 "Unable to setup interrupt capabilities\n");
1258 goto err_set_interrupt;
1261 err = i40evf_alloc_q_vectors(adapter);
1263 dev_err(&adapter->pdev->dev,
1264 "Unable to allocate memory for queue vectors\n");
1265 goto err_alloc_q_vectors;
1268 err = i40evf_alloc_queues(adapter);
1270 dev_err(&adapter->pdev->dev,
1271 "Unable to allocate memory for queues\n");
1272 goto err_alloc_queues;
1275 dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u",
1276 (adapter->vsi_res->num_queue_pairs > 1) ? "Enabled" :
1277 "Disabled", adapter->vsi_res->num_queue_pairs);
1281 i40evf_free_q_vectors(adapter);
1282 err_alloc_q_vectors:
1283 i40evf_reset_interrupt_capability(adapter);
1289 * i40evf_watchdog_timer - Periodic call-back timer
1290 * @data: pointer to adapter disguised as unsigned long
1292 static void i40evf_watchdog_timer(unsigned long data)
1294 struct i40evf_adapter *adapter = (struct i40evf_adapter *)data;
1295 schedule_work(&adapter->watchdog_task);
1296 /* timer will be rescheduled in watchdog task */
1300 * i40evf_watchdog_task - Periodic call-back task
1301 * @work: pointer to work_struct
1303 static void i40evf_watchdog_task(struct work_struct *work)
1305 struct i40evf_adapter *adapter = container_of(work,
1306 struct i40evf_adapter,
1308 struct i40e_hw *hw = &adapter->hw;
1310 if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section))
1311 goto restart_watchdog;
1313 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) {
1314 dev_info(&adapter->pdev->dev, "Checking for redemption\n");
1315 if ((rd32(hw, I40E_VFGEN_RSTAT) & 0x3) == I40E_VFR_VFACTIVE) {
1316 /* A chance for redemption! */
1317 dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n");
1318 adapter->state = __I40EVF_STARTUP;
1319 adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED;
1320 schedule_delayed_work(&adapter->init_task, 10);
1321 clear_bit(__I40EVF_IN_CRITICAL_TASK,
1322 &adapter->crit_section);
1323 /* Don't reschedule the watchdog, since we've restarted
1324 * the init task. When init_task contacts the PF and
1325 * gets everything set up again, it'll restart the
1326 * watchdog for us. Down, boy. Sit. Stay. Woof.
1330 adapter->aq_pending = 0;
1331 adapter->aq_required = 0;
1332 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
1336 if ((adapter->state < __I40EVF_DOWN) ||
1337 (adapter->flags & I40EVF_FLAG_RESET_PENDING))
1340 /* check for reset */
1341 if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) &&
1342 (rd32(hw, I40E_VFGEN_RSTAT) & 0x3) != I40E_VFR_VFACTIVE) {
1343 adapter->state = __I40EVF_RESETTING;
1344 adapter->flags |= I40EVF_FLAG_RESET_PENDING;
1345 dev_err(&adapter->pdev->dev, "Hardware reset detected.\n");
1346 dev_info(&adapter->pdev->dev, "Scheduling reset task\n");
1347 schedule_work(&adapter->reset_task);
1348 adapter->aq_pending = 0;
1349 adapter->aq_required = 0;
1350 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
1354 /* Process admin queue tasks. After init, everything gets done
1355 * here so we don't race on the admin queue.
1357 if (adapter->aq_pending)
1360 if (adapter->aq_required & I40EVF_FLAG_AQ_MAP_VECTORS) {
1361 i40evf_map_queues(adapter);
1365 if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_MAC_FILTER) {
1366 i40evf_add_ether_addrs(adapter);
1370 if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_VLAN_FILTER) {
1371 i40evf_add_vlans(adapter);
1375 if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_MAC_FILTER) {
1376 i40evf_del_ether_addrs(adapter);
1380 if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_VLAN_FILTER) {
1381 i40evf_del_vlans(adapter);
1385 if (adapter->aq_required & I40EVF_FLAG_AQ_DISABLE_QUEUES) {
1386 i40evf_disable_queues(adapter);
1390 if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_QUEUES) {
1391 i40evf_configure_queues(adapter);
1395 if (adapter->aq_required & I40EVF_FLAG_AQ_ENABLE_QUEUES) {
1396 i40evf_enable_queues(adapter);
1400 if (adapter->state == __I40EVF_RUNNING)
1401 i40evf_request_stats(adapter);
1403 i40evf_irq_enable(adapter, true);
1404 i40evf_fire_sw_int(adapter, 0xFF);
1407 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
1409 if (adapter->aq_required)
1410 mod_timer(&adapter->watchdog_timer,
1411 jiffies + msecs_to_jiffies(20));
1413 mod_timer(&adapter->watchdog_timer, jiffies + (HZ * 2));
1414 schedule_work(&adapter->adminq_task);
1418 * i40evf_configure_rss - Prepare for RSS if used
1419 * @adapter: board private structure
1421 static void i40evf_configure_rss(struct i40evf_adapter *adapter)
1423 struct i40e_hw *hw = &adapter->hw;
1428 /* Set of random keys generated using kernel random number generator */
1429 static const u32 seed[I40E_VFQF_HKEY_MAX_INDEX + 1] = {
1430 0x794221b4, 0xbca0c5ab, 0x6cd5ebd9, 0x1ada6127,
1431 0x983b3aa1, 0x1c4e71eb, 0x7f6328b2, 0xfcdc0da0,
1432 0xc135cafa, 0x7a6f7e2d, 0xe7102d28, 0x163cd12e,
1435 /* Hash type is configured by the PF - we just supply the key */
1437 /* Fill out hash function seed */
1438 for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++)
1439 wr32(hw, I40E_VFQF_HKEY(i), seed[i]);
1441 /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */
1442 hena = I40E_DEFAULT_RSS_HENA;
1443 wr32(hw, I40E_VFQF_HENA(0), (u32)hena);
1444 wr32(hw, I40E_VFQF_HENA(1), (u32)(hena >> 32));
1446 /* Populate the LUT with max no. of queues in round robin fashion */
1447 for (i = 0, j = 0; i < I40E_VFQF_HLUT_MAX_INDEX; i++, j++) {
1448 if (j == adapter->vsi_res->num_queue_pairs)
1450 /* lut = 4-byte sliding window of 4 lut entries */
1451 lut = (lut << 8) | (j &
1453 /* On i = 3, we have 4 entries in lut; write to the register */
1455 wr32(hw, I40E_VFQF_HLUT(i >> 2), lut);
1460 #define I40EVF_RESET_WAIT_MS 100
1461 #define I40EVF_RESET_WAIT_COUNT 200
1463 * i40evf_reset_task - Call-back task to handle hardware reset
1464 * @work: pointer to work_struct
1466 * During reset we need to shut down and reinitialize the admin queue
1467 * before we can use it to communicate with the PF again. We also clear
1468 * and reinit the rings because that context is lost as well.
1470 static void i40evf_reset_task(struct work_struct *work)
1472 struct i40evf_adapter *adapter = container_of(work,
1473 struct i40evf_adapter,
1475 struct i40e_hw *hw = &adapter->hw;
1479 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
1480 &adapter->crit_section))
1482 /* poll until we see the reset actually happen */
1483 for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) {
1484 rstat_val = rd32(hw, I40E_VFGEN_RSTAT) &
1485 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
1486 if (rstat_val != I40E_VFR_VFACTIVE) {
1487 dev_info(&adapter->pdev->dev, "Reset now occurring\n");
1490 msleep(I40EVF_RESET_WAIT_MS);
1493 if (i == I40EVF_RESET_WAIT_COUNT) {
1494 dev_err(&adapter->pdev->dev, "Reset was not detected\n");
1495 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
1496 goto continue_reset; /* act like the reset happened */
1499 /* wait until the reset is complete and the PF is responding to us */
1500 for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) {
1501 rstat_val = rd32(hw, I40E_VFGEN_RSTAT) &
1502 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
1503 if (rstat_val == I40E_VFR_VFACTIVE) {
1504 dev_info(&adapter->pdev->dev, "Reset is complete. Reinitializing.\n");
1507 msleep(I40EVF_RESET_WAIT_MS);
1510 if (i == I40EVF_RESET_WAIT_COUNT) {
1511 /* reset never finished */
1512 dev_err(&adapter->pdev->dev, "Reset never finished (%x). PF driver is dead, and so am I.\n",
1514 adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED;
1516 if (netif_running(adapter->netdev))
1517 i40evf_close(adapter->netdev);
1519 i40evf_free_misc_irq(adapter);
1520 i40evf_reset_interrupt_capability(adapter);
1521 i40evf_free_queues(adapter);
1522 kfree(adapter->vf_res);
1523 i40evf_shutdown_adminq(hw);
1524 adapter->netdev->flags &= ~IFF_UP;
1525 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
1526 return; /* Do not attempt to reinit. It's dead, Jim. */
1530 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
1532 i40evf_down(adapter);
1533 adapter->state = __I40EVF_RESETTING;
1535 /* kill and reinit the admin queue */
1536 if (i40evf_shutdown_adminq(hw))
1537 dev_warn(&adapter->pdev->dev,
1538 "%s: Failed to destroy the Admin Queue resources\n",
1540 err = i40evf_init_adminq(hw);
1542 dev_info(&adapter->pdev->dev, "%s: init_adminq failed: %d\n",
1545 adapter->aq_pending = 0;
1546 adapter->aq_required = 0;
1547 i40evf_map_queues(adapter);
1548 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
1550 mod_timer(&adapter->watchdog_timer, jiffies + 2);
1552 if (netif_running(adapter->netdev)) {
1553 /* allocate transmit descriptors */
1554 err = i40evf_setup_all_tx_resources(adapter);
1558 /* allocate receive descriptors */
1559 err = i40evf_setup_all_rx_resources(adapter);
1563 i40evf_configure(adapter);
1565 err = i40evf_up_complete(adapter);
1569 i40evf_irq_enable(adapter, true);
1573 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit.\n");
1574 i40evf_close(adapter->netdev);
1578 * i40evf_adminq_task - worker thread to clean the admin queue
1579 * @work: pointer to work_struct containing our data
1581 static void i40evf_adminq_task(struct work_struct *work)
1583 struct i40evf_adapter *adapter =
1584 container_of(work, struct i40evf_adapter, adminq_task);
1585 struct i40e_hw *hw = &adapter->hw;
1586 struct i40e_arq_event_info event;
1587 struct i40e_virtchnl_msg *v_msg;
1591 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED)
1594 event.msg_size = I40EVF_MAX_AQ_BUF_SIZE;
1595 event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
1596 if (!event.msg_buf) {
1597 dev_info(&adapter->pdev->dev, "%s: no memory for ARQ clean\n",
1601 v_msg = (struct i40e_virtchnl_msg *)&event.desc;
1603 ret = i40evf_clean_arq_element(hw, &event, &pending);
1605 break; /* No event to process or error cleaning ARQ */
1607 i40evf_virtchnl_completion(adapter, v_msg->v_opcode,
1608 v_msg->v_retval, event.msg_buf,
1611 dev_info(&adapter->pdev->dev,
1612 "%s: ARQ: Pending events %d\n",
1614 memset(event.msg_buf, 0, I40EVF_MAX_AQ_BUF_SIZE);
1618 /* re-enable Admin queue interrupt cause */
1619 i40evf_misc_irq_enable(adapter);
1621 kfree(event.msg_buf);
1625 * i40evf_free_all_tx_resources - Free Tx Resources for All Queues
1626 * @adapter: board private structure
1628 * Free all transmit software resources
1630 static void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter)
1634 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
1635 if (adapter->tx_rings[i]->desc)
1636 i40evf_free_tx_resources(adapter->tx_rings[i]);
1641 * i40evf_setup_all_tx_resources - allocate all queues Tx resources
1642 * @adapter: board private structure
1644 * If this function returns with an error, then it's possible one or
1645 * more of the rings is populated (while the rest are not). It is the
1646 * callers duty to clean those orphaned rings.
1648 * Return 0 on success, negative on failure
1650 static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter)
1654 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
1655 err = i40evf_setup_tx_descriptors(adapter->tx_rings[i]);
1658 dev_err(&adapter->pdev->dev,
1659 "%s: Allocation for Tx Queue %u failed\n",
1668 * i40evf_setup_all_rx_resources - allocate all queues Rx resources
1669 * @adapter: board private structure
1671 * If this function returns with an error, then it's possible one or
1672 * more of the rings is populated (while the rest are not). It is the
1673 * callers duty to clean those orphaned rings.
1675 * Return 0 on success, negative on failure
1677 static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter)
1681 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
1682 err = i40evf_setup_rx_descriptors(adapter->rx_rings[i]);
1685 dev_err(&adapter->pdev->dev,
1686 "%s: Allocation for Rx Queue %u failed\n",
1694 * i40evf_free_all_rx_resources - Free Rx Resources for All Queues
1695 * @adapter: board private structure
1697 * Free all receive software resources
1699 static void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter)
1703 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
1704 if (adapter->rx_rings[i]->desc)
1705 i40evf_free_rx_resources(adapter->rx_rings[i]);
1709 * i40evf_open - Called when a network interface is made active
1710 * @netdev: network interface device structure
1712 * Returns 0 on success, negative value on failure
1714 * The open entry point is called when a network interface is made
1715 * active by the system (IFF_UP). At this point all resources needed
1716 * for transmit and receive operations are allocated, the interrupt
1717 * handler is registered with the OS, the watchdog timer is started,
1718 * and the stack is notified that the interface is ready.
1720 static int i40evf_open(struct net_device *netdev)
1722 struct i40evf_adapter *adapter = netdev_priv(netdev);
1725 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) {
1726 dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n");
1729 if (adapter->state != __I40EVF_DOWN)
1732 /* allocate transmit descriptors */
1733 err = i40evf_setup_all_tx_resources(adapter);
1737 /* allocate receive descriptors */
1738 err = i40evf_setup_all_rx_resources(adapter);
1742 /* clear any pending interrupts, may auto mask */
1743 err = i40evf_request_traffic_irqs(adapter, netdev->name);
1747 i40evf_configure(adapter);
1749 err = i40evf_up_complete(adapter);
1753 i40evf_irq_enable(adapter, true);
1758 i40evf_down(adapter);
1759 i40evf_free_traffic_irqs(adapter);
1761 i40evf_free_all_rx_resources(adapter);
1763 i40evf_free_all_tx_resources(adapter);
1769 * i40evf_close - Disables a network interface
1770 * @netdev: network interface device structure
1772 * Returns 0, this is not allowed to fail
1774 * The close entry point is called when an interface is de-activated
1775 * by the OS. The hardware is still under the drivers control, but
1776 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue)
1777 * are freed, along with all transmit and receive resources.
1779 static int i40evf_close(struct net_device *netdev)
1781 struct i40evf_adapter *adapter = netdev_priv(netdev);
1783 if (adapter->state <= __I40EVF_DOWN)
1786 /* signal that we are down to the interrupt handler */
1787 adapter->state = __I40EVF_DOWN;
1789 set_bit(__I40E_DOWN, &adapter->vsi.state);
1791 i40evf_down(adapter);
1792 i40evf_free_traffic_irqs(adapter);
1794 i40evf_free_all_tx_resources(adapter);
1795 i40evf_free_all_rx_resources(adapter);
1801 * i40evf_get_stats - Get System Network Statistics
1802 * @netdev: network interface device structure
1804 * Returns the address of the device statistics structure.
1805 * The statistics are actually updated from the timer callback.
1807 static struct net_device_stats *i40evf_get_stats(struct net_device *netdev)
1809 struct i40evf_adapter *adapter = netdev_priv(netdev);
1811 /* only return the current stats */
1812 return &adapter->net_stats;
1816 * i40evf_reinit_locked - Software reinit
1817 * @adapter: board private structure
1819 * Reinititalizes the ring structures in response to a software configuration
1820 * change. Roughly the same as close followed by open, but skips releasing
1821 * and reallocating the interrupts.
1823 void i40evf_reinit_locked(struct i40evf_adapter *adapter)
1825 struct net_device *netdev = adapter->netdev;
1828 WARN_ON(in_interrupt());
1830 adapter->state = __I40EVF_RESETTING;
1832 i40evf_down(adapter);
1834 /* allocate transmit descriptors */
1835 err = i40evf_setup_all_tx_resources(adapter);
1839 /* allocate receive descriptors */
1840 err = i40evf_setup_all_rx_resources(adapter);
1844 i40evf_configure(adapter);
1846 err = i40evf_up_complete(adapter);
1850 i40evf_irq_enable(adapter, true);
1854 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit.\n");
1855 i40evf_close(netdev);
1859 * i40evf_change_mtu - Change the Maximum Transfer Unit
1860 * @netdev: network interface device structure
1861 * @new_mtu: new value for maximum frame size
1863 * Returns 0 on success, negative on failure
1865 static int i40evf_change_mtu(struct net_device *netdev, int new_mtu)
1867 struct i40evf_adapter *adapter = netdev_priv(netdev);
1868 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
1870 if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1873 /* must set new MTU before calling down or up */
1874 netdev->mtu = new_mtu;
1875 i40evf_reinit_locked(adapter);
1879 static const struct net_device_ops i40evf_netdev_ops = {
1880 .ndo_open = i40evf_open,
1881 .ndo_stop = i40evf_close,
1882 .ndo_start_xmit = i40evf_xmit_frame,
1883 .ndo_get_stats = i40evf_get_stats,
1884 .ndo_set_rx_mode = i40evf_set_rx_mode,
1885 .ndo_validate_addr = eth_validate_addr,
1886 .ndo_set_mac_address = i40evf_set_mac,
1887 .ndo_change_mtu = i40evf_change_mtu,
1888 .ndo_tx_timeout = i40evf_tx_timeout,
1889 .ndo_vlan_rx_add_vid = i40evf_vlan_rx_add_vid,
1890 .ndo_vlan_rx_kill_vid = i40evf_vlan_rx_kill_vid,
1894 * i40evf_check_reset_complete - check that VF reset is complete
1895 * @hw: pointer to hw struct
1897 * Returns 0 if device is ready to use, or -EBUSY if it's in reset.
1899 static int i40evf_check_reset_complete(struct i40e_hw *hw)
1904 for (i = 0; i < 100; i++) {
1905 rstat = rd32(hw, I40E_VFGEN_RSTAT);
1906 if (rstat == I40E_VFR_VFACTIVE)
1914 * i40evf_init_task - worker thread to perform delayed initialization
1915 * @work: pointer to work_struct containing our data
1917 * This task completes the work that was begun in probe. Due to the nature
1918 * of VF-PF communications, we may need to wait tens of milliseconds to get
1919 * reponses back from the PF. Rather than busy-wait in probe and bog down the
1920 * whole system, we'll do it in a task so we can sleep.
1921 * This task only runs during driver init. Once we've established
1922 * communications with the PF driver and set up our netdev, the watchdog
1925 static void i40evf_init_task(struct work_struct *work)
1927 struct i40evf_adapter *adapter = container_of(work,
1928 struct i40evf_adapter,
1930 struct net_device *netdev = adapter->netdev;
1931 struct i40evf_mac_filter *f;
1932 struct i40e_hw *hw = &adapter->hw;
1933 struct pci_dev *pdev = adapter->pdev;
1936 switch (adapter->state) {
1937 case __I40EVF_STARTUP:
1938 /* driver loaded, probe complete */
1939 adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED;
1940 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
1941 err = i40e_set_mac_type(hw);
1943 dev_err(&pdev->dev, "Failed to set MAC type (%d)\n",
1947 err = i40evf_check_reset_complete(hw);
1949 dev_err(&pdev->dev, "Device is still in reset (%d)\n",
1953 hw->aq.num_arq_entries = I40EVF_AQ_LEN;
1954 hw->aq.num_asq_entries = I40EVF_AQ_LEN;
1955 hw->aq.arq_buf_size = I40EVF_MAX_AQ_BUF_SIZE;
1956 hw->aq.asq_buf_size = I40EVF_MAX_AQ_BUF_SIZE;
1958 err = i40evf_init_adminq(hw);
1960 dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n",
1964 err = i40evf_send_api_ver(adapter);
1966 dev_err(&pdev->dev, "Unable to send to PF (%d)\n",
1968 i40evf_shutdown_adminq(hw);
1971 adapter->state = __I40EVF_INIT_VERSION_CHECK;
1974 case __I40EVF_INIT_VERSION_CHECK:
1975 if (!i40evf_asq_done(hw))
1978 /* aq msg sent, awaiting reply */
1979 err = i40evf_verify_api_ver(adapter);
1981 dev_err(&pdev->dev, "Unable to verify API version (%d)\n",
1985 err = i40evf_send_vf_config_msg(adapter);
1987 dev_err(&pdev->dev, "Unable send config request (%d)\n",
1991 adapter->state = __I40EVF_INIT_GET_RESOURCES;
1994 case __I40EVF_INIT_GET_RESOURCES:
1995 /* aq msg sent, awaiting reply */
1996 if (!adapter->vf_res) {
1997 bufsz = sizeof(struct i40e_virtchnl_vf_resource) +
1999 sizeof(struct i40e_virtchnl_vsi_resource));
2000 adapter->vf_res = kzalloc(bufsz, GFP_KERNEL);
2001 if (!adapter->vf_res)
2004 err = i40evf_get_vf_config(adapter);
2005 if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK)
2008 dev_err(&pdev->dev, "Unable to get VF config (%d)\n",
2012 adapter->state = __I40EVF_INIT_SW;
2017 /* got VF config message back from PF, now we can parse it */
2018 for (i = 0; i < adapter->vf_res->num_vsis; i++) {
2019 if (adapter->vf_res->vsi_res[i].vsi_type == I40E_VSI_SRIOV)
2020 adapter->vsi_res = &adapter->vf_res->vsi_res[i];
2022 if (!adapter->vsi_res) {
2023 dev_err(&pdev->dev, "No LAN VSI found\n");
2027 adapter->flags |= I40EVF_FLAG_RX_CSUM_ENABLED;
2029 netdev->netdev_ops = &i40evf_netdev_ops;
2030 i40evf_set_ethtool_ops(netdev);
2031 netdev->watchdog_timeo = 5 * HZ;
2032 netdev->features |= NETIF_F_HIGHDMA |
2042 if (adapter->vf_res->vf_offload_flags
2043 & I40E_VIRTCHNL_VF_OFFLOAD_VLAN) {
2044 netdev->vlan_features = netdev->features;
2045 netdev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2046 NETIF_F_HW_VLAN_CTAG_RX |
2047 NETIF_F_HW_VLAN_CTAG_FILTER;
2050 /* copy netdev features into list of user selectable features */
2051 netdev->hw_features |= netdev->features;
2052 netdev->hw_features &= ~NETIF_F_RXCSUM;
2054 if (!is_valid_ether_addr(adapter->hw.mac.addr)) {
2055 dev_info(&pdev->dev, "Invalid MAC address %pMAC, using random\n",
2056 adapter->hw.mac.addr);
2057 random_ether_addr(adapter->hw.mac.addr);
2059 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
2060 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
2062 INIT_LIST_HEAD(&adapter->mac_filter_list);
2063 INIT_LIST_HEAD(&adapter->vlan_filter_list);
2064 f = kzalloc(sizeof(*f), GFP_ATOMIC);
2068 memcpy(f->macaddr, adapter->hw.mac.addr, ETH_ALEN);
2070 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
2072 list_add(&f->list, &adapter->mac_filter_list);
2074 init_timer(&adapter->watchdog_timer);
2075 adapter->watchdog_timer.function = &i40evf_watchdog_timer;
2076 adapter->watchdog_timer.data = (unsigned long)adapter;
2077 mod_timer(&adapter->watchdog_timer, jiffies + 1);
2079 err = i40evf_init_interrupt_scheme(adapter);
2082 i40evf_map_rings_to_vectors(adapter);
2083 i40evf_configure_rss(adapter);
2084 err = i40evf_request_misc_irq(adapter);
2088 netif_carrier_off(netdev);
2090 adapter->vsi.id = adapter->vsi_res->vsi_id;
2091 adapter->vsi.seid = adapter->vsi_res->vsi_id; /* dummy */
2092 adapter->vsi.back = adapter;
2093 adapter->vsi.base_vector = 1;
2094 adapter->vsi.work_limit = I40E_DEFAULT_IRQ_WORK;
2095 adapter->vsi.rx_itr_setting = I40E_ITR_DYNAMIC;
2096 adapter->vsi.tx_itr_setting = I40E_ITR_DYNAMIC;
2097 adapter->vsi.netdev = adapter->netdev;
2099 if (!adapter->netdev_registered) {
2100 err = register_netdev(netdev);
2105 adapter->netdev_registered = true;
2107 netif_tx_stop_all_queues(netdev);
2109 dev_info(&pdev->dev, "MAC address: %pMAC\n", adapter->hw.mac.addr);
2110 if (netdev->features & NETIF_F_GRO)
2111 dev_info(&pdev->dev, "GRO is enabled\n");
2113 dev_info(&pdev->dev, "%s\n", i40evf_driver_string);
2114 adapter->state = __I40EVF_DOWN;
2115 set_bit(__I40E_DOWN, &adapter->vsi.state);
2116 i40evf_misc_irq_enable(adapter);
2119 schedule_delayed_work(&adapter->init_task,
2120 msecs_to_jiffies(50));
2124 i40evf_free_misc_irq(adapter);
2126 i40evf_reset_interrupt_capability(adapter);
2128 kfree(adapter->vf_res);
2129 adapter->vf_res = NULL;
2131 if (hw->aq.asq.count)
2132 i40evf_shutdown_adminq(hw); /* ignore error */
2133 /* Things went into the weeds, so try again later */
2134 if (++adapter->aq_wait_count > I40EVF_AQ_MAX_ERR) {
2135 dev_err(&pdev->dev, "Failed to communicate with PF; giving up.\n");
2136 adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED;
2137 return; /* do not reschedule */
2139 schedule_delayed_work(&adapter->init_task, HZ * 3);
2144 * i40evf_shutdown - Shutdown the device in preparation for a reboot
2145 * @pdev: pci device structure
2147 static void i40evf_shutdown(struct pci_dev *pdev)
2149 struct net_device *netdev = pci_get_drvdata(pdev);
2151 netif_device_detach(netdev);
2153 if (netif_running(netdev))
2154 i40evf_close(netdev);
2157 pci_save_state(pdev);
2160 pci_disable_device(pdev);
2164 * i40evf_probe - Device Initialization Routine
2165 * @pdev: PCI device information struct
2166 * @ent: entry in i40evf_pci_tbl
2168 * Returns 0 on success, negative on failure
2170 * i40evf_probe initializes an adapter identified by a pci_dev structure.
2171 * The OS initialization, configuring of the adapter private structure,
2172 * and a hardware reset occur.
2174 static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2176 struct net_device *netdev;
2177 struct i40evf_adapter *adapter = NULL;
2178 struct i40e_hw *hw = NULL;
2181 err = pci_enable_device(pdev);
2185 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
2187 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
2190 "DMA configuration failed: 0x%x\n", err);
2194 err = pci_request_regions(pdev, i40evf_driver_name);
2197 "pci_request_regions failed 0x%x\n", err);
2201 pci_enable_pcie_error_reporting(pdev);
2203 pci_set_master(pdev);
2205 netdev = alloc_etherdev_mq(sizeof(struct i40evf_adapter),
2209 goto err_alloc_etherdev;
2212 SET_NETDEV_DEV(netdev, &pdev->dev);
2214 pci_set_drvdata(pdev, netdev);
2215 adapter = netdev_priv(netdev);
2217 adapter->netdev = netdev;
2218 adapter->pdev = pdev;
2223 adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
2224 adapter->state = __I40EVF_STARTUP;
2226 /* Call save state here because it relies on the adapter struct. */
2227 pci_save_state(pdev);
2229 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
2230 pci_resource_len(pdev, 0));
2235 hw->vendor_id = pdev->vendor;
2236 hw->device_id = pdev->device;
2237 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
2238 hw->subsystem_vendor_id = pdev->subsystem_vendor;
2239 hw->subsystem_device_id = pdev->subsystem_device;
2240 hw->bus.device = PCI_SLOT(pdev->devfn);
2241 hw->bus.func = PCI_FUNC(pdev->devfn);
2243 INIT_WORK(&adapter->reset_task, i40evf_reset_task);
2244 INIT_WORK(&adapter->adminq_task, i40evf_adminq_task);
2245 INIT_WORK(&adapter->watchdog_task, i40evf_watchdog_task);
2246 INIT_DELAYED_WORK(&adapter->init_task, i40evf_init_task);
2247 schedule_delayed_work(&adapter->init_task, 10);
2252 free_netdev(netdev);
2254 pci_release_regions(pdev);
2257 pci_disable_device(pdev);
2263 * i40evf_suspend - Power management suspend routine
2264 * @pdev: PCI device information struct
2267 * Called when the system (VM) is entering sleep/suspend.
2269 static int i40evf_suspend(struct pci_dev *pdev, pm_message_t state)
2271 struct net_device *netdev = pci_get_drvdata(pdev);
2272 struct i40evf_adapter *adapter = netdev_priv(netdev);
2275 netif_device_detach(netdev);
2277 if (netif_running(netdev)) {
2279 i40evf_down(adapter);
2282 i40evf_free_misc_irq(adapter);
2283 i40evf_reset_interrupt_capability(adapter);
2285 retval = pci_save_state(pdev);
2289 pci_disable_device(pdev);
2295 * i40evf_resume - Power managment resume routine
2296 * @pdev: PCI device information struct
2298 * Called when the system (VM) is resumed from sleep/suspend.
2300 static int i40evf_resume(struct pci_dev *pdev)
2302 struct i40evf_adapter *adapter = pci_get_drvdata(pdev);
2303 struct net_device *netdev = adapter->netdev;
2306 pci_set_power_state(pdev, PCI_D0);
2307 pci_restore_state(pdev);
2308 /* pci_restore_state clears dev->state_saved so call
2309 * pci_save_state to restore it.
2311 pci_save_state(pdev);
2313 err = pci_enable_device_mem(pdev);
2315 dev_err(&pdev->dev, "Cannot enable PCI device from suspend.\n");
2318 pci_set_master(pdev);
2321 err = i40evf_set_interrupt_capability(adapter);
2323 dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n");
2326 err = i40evf_request_misc_irq(adapter);
2329 dev_err(&pdev->dev, "Cannot get interrupt vector.\n");
2333 schedule_work(&adapter->reset_task);
2335 netif_device_attach(netdev);
2340 #endif /* CONFIG_PM */
2342 * i40evf_remove - Device Removal Routine
2343 * @pdev: PCI device information struct
2345 * i40evf_remove is called by the PCI subsystem to alert the driver
2346 * that it should release a PCI device. The could be caused by a
2347 * Hot-Plug event, or because the driver is going to be removed from
2350 static void i40evf_remove(struct pci_dev *pdev)
2352 struct net_device *netdev = pci_get_drvdata(pdev);
2353 struct i40evf_adapter *adapter = netdev_priv(netdev);
2354 struct i40e_hw *hw = &adapter->hw;
2356 cancel_delayed_work_sync(&adapter->init_task);
2357 cancel_work_sync(&adapter->reset_task);
2359 if (adapter->netdev_registered) {
2360 unregister_netdev(netdev);
2361 adapter->netdev_registered = false;
2363 adapter->state = __I40EVF_REMOVE;
2365 if (adapter->msix_entries) {
2366 i40evf_misc_irq_disable(adapter);
2367 i40evf_free_misc_irq(adapter);
2368 i40evf_reset_interrupt_capability(adapter);
2371 del_timer_sync(&adapter->watchdog_timer);
2372 flush_scheduled_work();
2374 if (hw->aq.asq.count)
2375 i40evf_shutdown_adminq(hw);
2377 iounmap(hw->hw_addr);
2378 pci_release_regions(pdev);
2380 i40evf_free_queues(adapter);
2381 kfree(adapter->vf_res);
2383 free_netdev(netdev);
2385 pci_disable_pcie_error_reporting(pdev);
2387 pci_disable_device(pdev);
2390 static struct pci_driver i40evf_driver = {
2391 .name = i40evf_driver_name,
2392 .id_table = i40evf_pci_tbl,
2393 .probe = i40evf_probe,
2394 .remove = i40evf_remove,
2396 .suspend = i40evf_suspend,
2397 .resume = i40evf_resume,
2399 .shutdown = i40evf_shutdown,
2403 * i40e_init_module - Driver Registration Routine
2405 * i40e_init_module is the first routine called when the driver is
2406 * loaded. All it does is register with the PCI subsystem.
2408 static int __init i40evf_init_module(void)
2411 pr_info("i40evf: %s - version %s\n", i40evf_driver_string,
2412 i40evf_driver_version);
2414 pr_info("%s\n", i40evf_copyright);
2416 ret = pci_register_driver(&i40evf_driver);
2420 module_init(i40evf_init_module);
2423 * i40e_exit_module - Driver Exit Cleanup Routine
2425 * i40e_exit_module is called just before the driver is removed
2428 static void __exit i40evf_exit_module(void)
2430 pci_unregister_driver(&i40evf_driver);
2433 module_exit(i40evf_exit_module);