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 "0.9.16"
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 adapter->flags |= I40EVF_FLAG_RESET_NEEDED;
173 schedule_work(&adapter->reset_task);
178 * i40evf_misc_irq_disable - Mask off interrupt generation on the NIC
179 * @adapter: board private structure
181 static void i40evf_misc_irq_disable(struct i40evf_adapter *adapter)
183 struct i40e_hw *hw = &adapter->hw;
184 wr32(hw, I40E_VFINT_DYN_CTL01, 0);
187 rd32(hw, I40E_VFGEN_RSTAT);
189 synchronize_irq(adapter->msix_entries[0].vector);
193 * i40evf_misc_irq_enable - Enable default interrupt generation settings
194 * @adapter: board private structure
196 static void i40evf_misc_irq_enable(struct i40evf_adapter *adapter)
198 struct i40e_hw *hw = &adapter->hw;
199 wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK |
200 I40E_VFINT_DYN_CTL01_ITR_INDX_MASK);
201 wr32(hw, I40E_VFINT_ICR0_ENA1, I40E_VFINT_ICR0_ENA_ADMINQ_MASK);
204 rd32(hw, I40E_VFGEN_RSTAT);
208 * i40evf_irq_disable - Mask off interrupt generation on the NIC
209 * @adapter: board private structure
211 static void i40evf_irq_disable(struct i40evf_adapter *adapter)
214 struct i40e_hw *hw = &adapter->hw;
216 if (!adapter->msix_entries)
219 for (i = 1; i < adapter->num_msix_vectors; i++) {
220 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), 0);
221 synchronize_irq(adapter->msix_entries[i].vector);
224 rd32(hw, I40E_VFGEN_RSTAT);
229 * i40evf_irq_enable_queues - Enable interrupt for specified queues
230 * @adapter: board private structure
231 * @mask: bitmap of queues to enable
233 void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask)
235 struct i40e_hw *hw = &adapter->hw;
238 for (i = 1; i < adapter->num_msix_vectors; i++) {
239 if (mask & (1 << (i - 1))) {
240 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1),
241 I40E_VFINT_DYN_CTLN1_INTENA_MASK |
242 I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
248 * i40evf_fire_sw_int - Generate SW interrupt for specified vectors
249 * @adapter: board private structure
250 * @mask: bitmap of vectors to trigger
252 static void i40evf_fire_sw_int(struct i40evf_adapter *adapter,
255 struct i40e_hw *hw = &adapter->hw;
259 for (i = 1; i < adapter->num_msix_vectors; i++) {
260 if (mask & (1 << i)) {
261 dyn_ctl = rd32(hw, I40E_VFINT_DYN_CTLN1(i - 1));
262 dyn_ctl |= I40E_VFINT_DYN_CTLN_SWINT_TRIG_MASK |
263 I40E_VFINT_DYN_CTLN_CLEARPBA_MASK;
264 wr32(hw, I40E_VFINT_DYN_CTLN1(i - 1), dyn_ctl);
270 * i40evf_irq_enable - Enable default interrupt generation settings
271 * @adapter: board private structure
273 void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush)
275 struct i40e_hw *hw = &adapter->hw;
277 i40evf_irq_enable_queues(adapter, ~0);
280 rd32(hw, I40E_VFGEN_RSTAT);
284 * i40evf_msix_aq - Interrupt handler for vector 0
285 * @irq: interrupt number
286 * @data: pointer to netdev
288 static irqreturn_t i40evf_msix_aq(int irq, void *data)
290 struct net_device *netdev = data;
291 struct i40evf_adapter *adapter = netdev_priv(netdev);
292 struct i40e_hw *hw = &adapter->hw;
296 /* handle non-queue interrupts */
297 val = rd32(hw, I40E_VFINT_ICR01);
298 ena_mask = rd32(hw, I40E_VFINT_ICR0_ENA1);
301 val = rd32(hw, I40E_VFINT_DYN_CTL01);
302 val = val | I40E_PFINT_DYN_CTL0_CLEARPBA_MASK;
303 wr32(hw, I40E_VFINT_DYN_CTL01, val);
305 /* re-enable interrupt causes */
306 wr32(hw, I40E_VFINT_ICR0_ENA1, ena_mask);
307 wr32(hw, I40E_VFINT_DYN_CTL01, I40E_VFINT_DYN_CTL01_INTENA_MASK);
309 /* schedule work on the private workqueue */
310 schedule_work(&adapter->adminq_task);
316 * i40evf_msix_clean_rings - MSIX mode Interrupt Handler
317 * @irq: interrupt number
318 * @data: pointer to a q_vector
320 static irqreturn_t i40evf_msix_clean_rings(int irq, void *data)
322 struct i40e_q_vector *q_vector = data;
324 if (!q_vector->tx.ring && !q_vector->rx.ring)
327 napi_schedule(&q_vector->napi);
333 * i40evf_map_vector_to_rxq - associate irqs with rx queues
334 * @adapter: board private structure
335 * @v_idx: interrupt number
336 * @r_idx: queue number
339 i40evf_map_vector_to_rxq(struct i40evf_adapter *adapter, int v_idx, int r_idx)
341 struct i40e_q_vector *q_vector = adapter->q_vector[v_idx];
342 struct i40e_ring *rx_ring = adapter->rx_rings[r_idx];
344 rx_ring->q_vector = q_vector;
345 rx_ring->next = q_vector->rx.ring;
346 rx_ring->vsi = &adapter->vsi;
347 q_vector->rx.ring = rx_ring;
348 q_vector->rx.count++;
349 q_vector->rx.latency_range = I40E_LOW_LATENCY;
353 * i40evf_map_vector_to_txq - associate irqs with tx queues
354 * @adapter: board private structure
355 * @v_idx: interrupt number
356 * @t_idx: queue number
359 i40evf_map_vector_to_txq(struct i40evf_adapter *adapter, int v_idx, int t_idx)
361 struct i40e_q_vector *q_vector = adapter->q_vector[v_idx];
362 struct i40e_ring *tx_ring = adapter->tx_rings[t_idx];
364 tx_ring->q_vector = q_vector;
365 tx_ring->next = q_vector->tx.ring;
366 tx_ring->vsi = &adapter->vsi;
367 q_vector->tx.ring = tx_ring;
368 q_vector->tx.count++;
369 q_vector->tx.latency_range = I40E_LOW_LATENCY;
370 q_vector->num_ringpairs++;
371 q_vector->ring_mask |= (1 << t_idx);
375 * i40evf_map_rings_to_vectors - Maps descriptor rings to vectors
376 * @adapter: board private structure to initialize
378 * This function maps descriptor rings to the queue-specific vectors
379 * we were allotted through the MSI-X enabling code. Ideally, we'd have
380 * one vector per ring/queue, but on a constrained vector budget, we
381 * group the rings as "efficiently" as possible. You would add new
382 * mapping configurations in here.
384 static int i40evf_map_rings_to_vectors(struct i40evf_adapter *adapter)
388 int rxr_idx = 0, txr_idx = 0;
389 int rxr_remaining = adapter->vsi_res->num_queue_pairs;
390 int txr_remaining = adapter->vsi_res->num_queue_pairs;
395 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
397 /* The ideal configuration...
398 * We have enough vectors to map one per queue.
400 if (q_vectors == (rxr_remaining * 2)) {
401 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
402 i40evf_map_vector_to_rxq(adapter, v_start, rxr_idx);
404 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
405 i40evf_map_vector_to_txq(adapter, v_start, txr_idx);
409 /* If we don't have enough vectors for a 1-to-1
410 * mapping, we'll have to group them so there are
411 * multiple queues per vector.
412 * Re-adjusting *qpv takes care of the remainder.
414 for (i = v_start; i < q_vectors; i++) {
415 rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - i);
416 for (j = 0; j < rqpv; j++) {
417 i40evf_map_vector_to_rxq(adapter, i, rxr_idx);
422 for (i = v_start; i < q_vectors; i++) {
423 tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - i);
424 for (j = 0; j < tqpv; j++) {
425 i40evf_map_vector_to_txq(adapter, i, txr_idx);
432 adapter->aq_required |= I40EVF_FLAG_AQ_MAP_VECTORS;
438 * i40evf_request_traffic_irqs - Initialize MSI-X interrupts
439 * @adapter: board private structure
441 * Allocates MSI-X vectors for tx and rx handling, and requests
442 * interrupts from the kernel.
445 i40evf_request_traffic_irqs(struct i40evf_adapter *adapter, char *basename)
447 int vector, err, q_vectors;
448 int rx_int_idx = 0, tx_int_idx = 0;
450 i40evf_irq_disable(adapter);
451 /* Decrement for Other and TCP Timer vectors */
452 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
454 for (vector = 0; vector < q_vectors; vector++) {
455 struct i40e_q_vector *q_vector = adapter->q_vector[vector];
457 if (q_vector->tx.ring && q_vector->rx.ring) {
458 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
459 "i40evf-%s-%s-%d", basename,
460 "TxRx", rx_int_idx++);
462 } else if (q_vector->rx.ring) {
463 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
464 "i40evf-%s-%s-%d", basename,
466 } else if (q_vector->tx.ring) {
467 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
468 "i40evf-%s-%s-%d", basename,
471 /* skip this unused q_vector */
475 adapter->msix_entries[vector + NONQ_VECS].vector,
476 i40evf_msix_clean_rings,
481 dev_info(&adapter->pdev->dev,
482 "%s: request_irq failed, error: %d\n",
484 goto free_queue_irqs;
486 /* assign the mask for this irq */
487 irq_set_affinity_hint(
488 adapter->msix_entries[vector + NONQ_VECS].vector,
489 q_vector->affinity_mask);
497 irq_set_affinity_hint(
498 adapter->msix_entries[vector + NONQ_VECS].vector,
500 free_irq(adapter->msix_entries[vector + NONQ_VECS].vector,
501 adapter->q_vector[vector]);
507 * i40evf_request_misc_irq - Initialize MSI-X interrupts
508 * @adapter: board private structure
510 * Allocates MSI-X vector 0 and requests interrupts from the kernel. This
511 * vector is only for the admin queue, and stays active even when the netdev
514 static int i40evf_request_misc_irq(struct i40evf_adapter *adapter)
516 struct net_device *netdev = adapter->netdev;
519 sprintf(adapter->misc_vector_name, "i40evf:mbx");
520 err = request_irq(adapter->msix_entries[0].vector,
522 adapter->misc_vector_name, netdev);
524 dev_err(&adapter->pdev->dev,
525 "request_irq for %s failed: %d\n",
526 adapter->misc_vector_name, err);
527 free_irq(adapter->msix_entries[0].vector, netdev);
533 * i40evf_free_traffic_irqs - Free MSI-X interrupts
534 * @adapter: board private structure
536 * Frees all MSI-X vectors other than 0.
538 static void i40evf_free_traffic_irqs(struct i40evf_adapter *adapter)
542 q_vectors = adapter->num_msix_vectors - NONQ_VECS;
544 for (i = 0; i < q_vectors; i++) {
545 irq_set_affinity_hint(adapter->msix_entries[i+1].vector,
547 free_irq(adapter->msix_entries[i+1].vector,
548 adapter->q_vector[i]);
553 * i40evf_free_misc_irq - Free MSI-X miscellaneous vector
554 * @adapter: board private structure
556 * Frees MSI-X vector 0.
558 static void i40evf_free_misc_irq(struct i40evf_adapter *adapter)
560 struct net_device *netdev = adapter->netdev;
562 free_irq(adapter->msix_entries[0].vector, netdev);
566 * i40evf_configure_tx - Configure Transmit Unit after Reset
567 * @adapter: board private structure
569 * Configure the Tx unit of the MAC after a reset.
571 static void i40evf_configure_tx(struct i40evf_adapter *adapter)
573 struct i40e_hw *hw = &adapter->hw;
575 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
576 adapter->tx_rings[i]->tail = hw->hw_addr + I40E_QTX_TAIL1(i);
580 * i40evf_configure_rx - Configure Receive Unit after Reset
581 * @adapter: board private structure
583 * Configure the Rx unit of the MAC after a reset.
585 static void i40evf_configure_rx(struct i40evf_adapter *adapter)
587 struct i40e_hw *hw = &adapter->hw;
588 struct net_device *netdev = adapter->netdev;
589 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
594 adapter->flags &= ~I40EVF_FLAG_RX_PS_CAPABLE;
595 adapter->flags |= I40EVF_FLAG_RX_1BUF_CAPABLE;
597 /* Decide whether to use packet split mode or not */
598 if (netdev->mtu > ETH_DATA_LEN) {
599 if (adapter->flags & I40EVF_FLAG_RX_PS_CAPABLE)
600 adapter->flags |= I40EVF_FLAG_RX_PS_ENABLED;
602 adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED;
604 if (adapter->flags & I40EVF_FLAG_RX_1BUF_CAPABLE)
605 adapter->flags &= ~I40EVF_FLAG_RX_PS_ENABLED;
607 adapter->flags |= I40EVF_FLAG_RX_PS_ENABLED;
610 /* Set the RX buffer length according to the mode */
611 if (adapter->flags & I40EVF_FLAG_RX_PS_ENABLED) {
612 rx_buf_len = I40E_RX_HDR_SIZE;
614 if (netdev->mtu <= ETH_DATA_LEN)
615 rx_buf_len = I40EVF_RXBUFFER_2048;
617 rx_buf_len = ALIGN(max_frame, 1024);
620 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
621 adapter->rx_rings[i]->tail = hw->hw_addr + I40E_QRX_TAIL1(i);
622 adapter->rx_rings[i]->rx_buf_len = rx_buf_len;
627 * i40evf_find_vlan - Search filter list for specific vlan filter
628 * @adapter: board private structure
631 * Returns ptr to the filter object or NULL
634 i40evf_vlan_filter *i40evf_find_vlan(struct i40evf_adapter *adapter, u16 vlan)
636 struct i40evf_vlan_filter *f;
638 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
646 * i40evf_add_vlan - Add a vlan filter to the list
647 * @adapter: board private structure
650 * Returns ptr to the filter object or NULL when no memory available.
653 i40evf_vlan_filter *i40evf_add_vlan(struct i40evf_adapter *adapter, u16 vlan)
655 struct i40evf_vlan_filter *f;
657 f = i40evf_find_vlan(adapter, vlan);
659 f = kzalloc(sizeof(*f), GFP_ATOMIC);
661 dev_info(&adapter->pdev->dev,
662 "%s: no memory for new VLAN filter\n",
668 INIT_LIST_HEAD(&f->list);
669 list_add(&f->list, &adapter->vlan_filter_list);
671 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_VLAN_FILTER;
678 * i40evf_del_vlan - Remove a vlan filter from the list
679 * @adapter: board private structure
682 static void i40evf_del_vlan(struct i40evf_adapter *adapter, u16 vlan)
684 struct i40evf_vlan_filter *f;
686 f = i40evf_find_vlan(adapter, vlan);
689 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
695 * i40evf_vlan_rx_add_vid - Add a VLAN filter to a device
696 * @netdev: network device struct
699 static int i40evf_vlan_rx_add_vid(struct net_device *netdev,
700 __always_unused __be16 proto, u16 vid)
702 struct i40evf_adapter *adapter = netdev_priv(netdev);
704 if (i40evf_add_vlan(adapter, vid) == NULL)
710 * i40evf_vlan_rx_kill_vid - Remove a VLAN filter from a device
711 * @netdev: network device struct
714 static int i40evf_vlan_rx_kill_vid(struct net_device *netdev,
715 __always_unused __be16 proto, u16 vid)
717 struct i40evf_adapter *adapter = netdev_priv(netdev);
719 i40evf_del_vlan(adapter, vid);
724 * i40evf_find_filter - Search filter list for specific mac filter
725 * @adapter: board private structure
726 * @macaddr: the MAC address
728 * Returns ptr to the filter object or NULL
731 i40evf_mac_filter *i40evf_find_filter(struct i40evf_adapter *adapter,
734 struct i40evf_mac_filter *f;
739 list_for_each_entry(f, &adapter->mac_filter_list, list) {
740 if (ether_addr_equal(macaddr, f->macaddr))
747 * i40e_add_filter - Add a mac filter to the filter list
748 * @adapter: board private structure
749 * @macaddr: the MAC address
751 * Returns ptr to the filter object or NULL when no memory available.
754 i40evf_mac_filter *i40evf_add_filter(struct i40evf_adapter *adapter,
757 struct i40evf_mac_filter *f;
762 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
763 &adapter->crit_section))
766 f = i40evf_find_filter(adapter, macaddr);
768 f = kzalloc(sizeof(*f), GFP_ATOMIC);
770 dev_info(&adapter->pdev->dev,
771 "%s: no memory for new filter\n", __func__);
772 clear_bit(__I40EVF_IN_CRITICAL_TASK,
773 &adapter->crit_section);
777 memcpy(f->macaddr, macaddr, ETH_ALEN);
779 list_add(&f->list, &adapter->mac_filter_list);
781 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
784 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
789 * i40evf_set_mac - NDO callback to set port mac address
790 * @netdev: network interface device structure
791 * @p: pointer to an address structure
793 * Returns 0 on success, negative on failure
795 static int i40evf_set_mac(struct net_device *netdev, void *p)
797 struct i40evf_adapter *adapter = netdev_priv(netdev);
798 struct i40e_hw *hw = &adapter->hw;
799 struct i40evf_mac_filter *f;
800 struct sockaddr *addr = p;
802 if (!is_valid_ether_addr(addr->sa_data))
803 return -EADDRNOTAVAIL;
805 if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
808 f = i40evf_add_filter(adapter, addr->sa_data);
810 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
811 memcpy(netdev->dev_addr, adapter->hw.mac.addr,
815 return (f == NULL) ? -ENOMEM : 0;
819 * i40evf_set_rx_mode - NDO callback to set the netdev filters
820 * @netdev: network interface device structure
822 static void i40evf_set_rx_mode(struct net_device *netdev)
824 struct i40evf_adapter *adapter = netdev_priv(netdev);
825 struct i40evf_mac_filter *f, *ftmp;
826 struct netdev_hw_addr *uca;
827 struct netdev_hw_addr *mca;
829 /* add addr if not already in the filter list */
830 netdev_for_each_uc_addr(uca, netdev) {
831 i40evf_add_filter(adapter, uca->addr);
833 netdev_for_each_mc_addr(mca, netdev) {
834 i40evf_add_filter(adapter, mca->addr);
837 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
838 &adapter->crit_section))
840 /* remove filter if not in netdev list */
841 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
844 if (f->macaddr[0] & 0x01) {
845 netdev_for_each_mc_addr(mca, netdev) {
846 if (ether_addr_equal(mca->addr, f->macaddr)) {
852 netdev_for_each_uc_addr(uca, netdev) {
853 if (ether_addr_equal(uca->addr, f->macaddr)) {
861 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
864 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
868 * i40evf_napi_enable_all - enable NAPI on all queue vectors
869 * @adapter: board private structure
871 static void i40evf_napi_enable_all(struct i40evf_adapter *adapter)
874 struct i40e_q_vector *q_vector;
875 int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
877 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
878 struct napi_struct *napi;
879 q_vector = adapter->q_vector[q_idx];
880 napi = &q_vector->napi;
886 * i40evf_napi_disable_all - disable NAPI on all queue vectors
887 * @adapter: board private structure
889 static void i40evf_napi_disable_all(struct i40evf_adapter *adapter)
892 struct i40e_q_vector *q_vector;
893 int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
895 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
896 q_vector = adapter->q_vector[q_idx];
897 napi_disable(&q_vector->napi);
902 * i40evf_configure - set up transmit and receive data structures
903 * @adapter: board private structure
905 static void i40evf_configure(struct i40evf_adapter *adapter)
907 struct net_device *netdev = adapter->netdev;
910 i40evf_set_rx_mode(netdev);
912 i40evf_configure_tx(adapter);
913 i40evf_configure_rx(adapter);
914 adapter->aq_required |= I40EVF_FLAG_AQ_CONFIGURE_QUEUES;
916 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
917 struct i40e_ring *ring = adapter->rx_rings[i];
918 i40evf_alloc_rx_buffers(ring, ring->count);
919 ring->next_to_use = ring->count - 1;
920 writel(ring->next_to_use, ring->tail);
925 * i40evf_up_complete - Finish the last steps of bringing up a connection
926 * @adapter: board private structure
928 static int i40evf_up_complete(struct i40evf_adapter *adapter)
930 adapter->state = __I40EVF_RUNNING;
931 clear_bit(__I40E_DOWN, &adapter->vsi.state);
933 i40evf_napi_enable_all(adapter);
935 adapter->aq_required |= I40EVF_FLAG_AQ_ENABLE_QUEUES;
936 mod_timer_pending(&adapter->watchdog_timer, jiffies + 1);
941 * i40evf_clean_all_rx_rings - Free Rx Buffers for all queues
942 * @adapter: board private structure
944 static void i40evf_clean_all_rx_rings(struct i40evf_adapter *adapter)
948 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
949 i40evf_clean_rx_ring(adapter->rx_rings[i]);
953 * i40evf_clean_all_tx_rings - Free Tx Buffers for all queues
954 * @adapter: board private structure
956 static void i40evf_clean_all_tx_rings(struct i40evf_adapter *adapter)
960 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
961 i40evf_clean_tx_ring(adapter->tx_rings[i]);
965 * i40e_down - Shutdown the connection processing
966 * @adapter: board private structure
968 void i40evf_down(struct i40evf_adapter *adapter)
970 struct net_device *netdev = adapter->netdev;
971 struct i40evf_mac_filter *f;
973 /* remove all MAC filters */
974 list_for_each_entry(f, &adapter->mac_filter_list, list) {
977 /* remove all VLAN filters */
978 list_for_each_entry(f, &adapter->vlan_filter_list, list) {
981 if (!(adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) &&
982 adapter->state != __I40EVF_RESETTING) {
983 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_MAC_FILTER;
984 adapter->aq_required |= I40EVF_FLAG_AQ_DEL_VLAN_FILTER;
985 /* disable receives */
986 adapter->aq_required |= I40EVF_FLAG_AQ_DISABLE_QUEUES;
987 mod_timer_pending(&adapter->watchdog_timer, jiffies + 1);
990 netif_tx_disable(netdev);
992 netif_tx_stop_all_queues(netdev);
994 i40evf_irq_disable(adapter);
996 i40evf_napi_disable_all(adapter);
998 netif_carrier_off(netdev);
1000 i40evf_clean_all_tx_rings(adapter);
1001 i40evf_clean_all_rx_rings(adapter);
1005 * i40evf_acquire_msix_vectors - Setup the MSIX capability
1006 * @adapter: board private structure
1007 * @vectors: number of vectors to request
1009 * Work with the OS to set up the MSIX vectors needed.
1011 * Returns 0 on success, negative on failure
1014 i40evf_acquire_msix_vectors(struct i40evf_adapter *adapter, int vectors)
1016 int err, vector_threshold;
1018 /* We'll want at least 3 (vector_threshold):
1019 * 0) Other (Admin Queue and link, mostly)
1023 vector_threshold = MIN_MSIX_COUNT;
1025 /* The more we get, the more we will assign to Tx/Rx Cleanup
1026 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1027 * Right now, we simply care about how many we'll get; we'll
1028 * set them up later while requesting irq's.
1030 while (vectors >= vector_threshold) {
1031 err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1033 if (!err) /* Success in acquiring all requested vectors. */
1036 vectors = 0; /* Nasty failure, quit now */
1037 else /* err == number of vectors we should try again with */
1041 if (vectors < vector_threshold) {
1042 dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts.\n");
1043 kfree(adapter->msix_entries);
1044 adapter->msix_entries = NULL;
1047 /* Adjust for only the vectors we'll use, which is minimum
1048 * of max_msix_q_vectors + NONQ_VECS, or the number of
1049 * vectors we were allocated.
1051 adapter->num_msix_vectors = vectors;
1057 * i40evf_free_queues - Free memory for all rings
1058 * @adapter: board private structure to initialize
1060 * Free all of the memory associated with queue pairs.
1062 static void i40evf_free_queues(struct i40evf_adapter *adapter)
1066 if (!adapter->vsi_res)
1068 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
1069 if (adapter->tx_rings[i])
1070 kfree_rcu(adapter->tx_rings[i], rcu);
1071 adapter->tx_rings[i] = NULL;
1072 adapter->rx_rings[i] = NULL;
1077 * i40evf_alloc_queues - Allocate memory for all rings
1078 * @adapter: board private structure to initialize
1080 * We allocate one ring per queue at run-time since we don't know the
1081 * number of queues at compile-time. The polling_netdev array is
1082 * intended for Multiqueue, but should work fine with a single queue.
1084 static int i40evf_alloc_queues(struct i40evf_adapter *adapter)
1088 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
1089 struct i40e_ring *tx_ring;
1090 struct i40e_ring *rx_ring;
1092 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
1096 tx_ring->queue_index = i;
1097 tx_ring->netdev = adapter->netdev;
1098 tx_ring->dev = &adapter->pdev->dev;
1099 tx_ring->count = I40EVF_DEFAULT_TXD;
1100 adapter->tx_rings[i] = tx_ring;
1102 rx_ring = &tx_ring[1];
1103 rx_ring->queue_index = i;
1104 rx_ring->netdev = adapter->netdev;
1105 rx_ring->dev = &adapter->pdev->dev;
1106 rx_ring->count = I40EVF_DEFAULT_RXD;
1107 adapter->rx_rings[i] = rx_ring;
1113 i40evf_free_queues(adapter);
1118 * i40evf_set_interrupt_capability - set MSI-X or FAIL if not supported
1119 * @adapter: board private structure to initialize
1121 * Attempt to configure the interrupts using the best available
1122 * capabilities of the hardware and the kernel.
1124 static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter)
1126 int vector, v_budget;
1130 if (!adapter->vsi_res) {
1134 pairs = adapter->vsi_res->num_queue_pairs;
1136 /* It's easy to be greedy for MSI-X vectors, but it really
1137 * doesn't do us much good if we have a lot more vectors
1138 * than CPU's. So let's be conservative and only ask for
1139 * (roughly) twice the number of vectors as there are CPU's.
1141 v_budget = min_t(int, pairs, (int)(num_online_cpus() * 2)) + NONQ_VECS;
1142 v_budget = min_t(int, v_budget, (int)adapter->vf_res->max_vectors);
1144 /* A failure in MSI-X entry allocation isn't fatal, but it does
1145 * mean we disable MSI-X capabilities of the adapter.
1147 adapter->msix_entries = kcalloc(v_budget,
1148 sizeof(struct msix_entry), GFP_KERNEL);
1149 if (!adapter->msix_entries) {
1154 for (vector = 0; vector < v_budget; vector++)
1155 adapter->msix_entries[vector].entry = vector;
1157 i40evf_acquire_msix_vectors(adapter, v_budget);
1160 adapter->netdev->real_num_tx_queues = pairs;
1165 * i40evf_alloc_q_vectors - Allocate memory for interrupt vectors
1166 * @adapter: board private structure to initialize
1168 * We allocate one q_vector per queue interrupt. If allocation fails we
1171 static int i40evf_alloc_q_vectors(struct i40evf_adapter *adapter)
1173 int q_idx, num_q_vectors;
1174 struct i40e_q_vector *q_vector;
1176 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
1178 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
1179 q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
1182 q_vector->adapter = adapter;
1183 q_vector->vsi = &adapter->vsi;
1184 q_vector->v_idx = q_idx;
1185 netif_napi_add(adapter->netdev, &q_vector->napi,
1186 i40evf_napi_poll, 64);
1187 adapter->q_vector[q_idx] = q_vector;
1195 q_vector = adapter->q_vector[q_idx];
1196 netif_napi_del(&q_vector->napi);
1198 adapter->q_vector[q_idx] = NULL;
1204 * i40evf_free_q_vectors - Free memory allocated for interrupt vectors
1205 * @adapter: board private structure to initialize
1207 * This function frees the memory allocated to the q_vectors. In addition if
1208 * NAPI is enabled it will delete any references to the NAPI struct prior
1209 * to freeing the q_vector.
1211 static void i40evf_free_q_vectors(struct i40evf_adapter *adapter)
1213 int q_idx, num_q_vectors;
1216 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
1217 napi_vectors = adapter->vsi_res->num_queue_pairs;
1219 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
1220 struct i40e_q_vector *q_vector = adapter->q_vector[q_idx];
1222 adapter->q_vector[q_idx] = NULL;
1223 if (q_idx < napi_vectors)
1224 netif_napi_del(&q_vector->napi);
1230 * i40evf_reset_interrupt_capability - Reset MSIX setup
1231 * @adapter: board private structure
1234 void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter)
1236 pci_disable_msix(adapter->pdev);
1237 kfree(adapter->msix_entries);
1238 adapter->msix_entries = NULL;
1244 * i40evf_init_interrupt_scheme - Determine if MSIX is supported and init
1245 * @adapter: board private structure to initialize
1248 int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter)
1252 err = i40evf_set_interrupt_capability(adapter);
1254 dev_err(&adapter->pdev->dev,
1255 "Unable to setup interrupt capabilities\n");
1256 goto err_set_interrupt;
1259 err = i40evf_alloc_q_vectors(adapter);
1261 dev_err(&adapter->pdev->dev,
1262 "Unable to allocate memory for queue vectors\n");
1263 goto err_alloc_q_vectors;
1266 err = i40evf_alloc_queues(adapter);
1268 dev_err(&adapter->pdev->dev,
1269 "Unable to allocate memory for queues\n");
1270 goto err_alloc_queues;
1273 dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u",
1274 (adapter->vsi_res->num_queue_pairs > 1) ? "Enabled" :
1275 "Disabled", adapter->vsi_res->num_queue_pairs);
1279 i40evf_free_q_vectors(adapter);
1280 err_alloc_q_vectors:
1281 i40evf_reset_interrupt_capability(adapter);
1287 * i40evf_watchdog_timer - Periodic call-back timer
1288 * @data: pointer to adapter disguised as unsigned long
1290 static void i40evf_watchdog_timer(unsigned long data)
1292 struct i40evf_adapter *adapter = (struct i40evf_adapter *)data;
1293 schedule_work(&adapter->watchdog_task);
1294 /* timer will be rescheduled in watchdog task */
1298 * i40evf_watchdog_task - Periodic call-back task
1299 * @work: pointer to work_struct
1301 static void i40evf_watchdog_task(struct work_struct *work)
1303 struct i40evf_adapter *adapter = container_of(work,
1304 struct i40evf_adapter,
1306 struct i40e_hw *hw = &adapter->hw;
1308 if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section))
1309 goto restart_watchdog;
1311 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) {
1312 dev_info(&adapter->pdev->dev, "Checking for redemption\n");
1313 if ((rd32(hw, I40E_VFGEN_RSTAT) & 0x3) == I40E_VFR_VFACTIVE) {
1314 /* A chance for redemption! */
1315 dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n");
1316 adapter->state = __I40EVF_STARTUP;
1317 adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED;
1318 schedule_delayed_work(&adapter->init_task, 10);
1319 clear_bit(__I40EVF_IN_CRITICAL_TASK,
1320 &adapter->crit_section);
1321 /* Don't reschedule the watchdog, since we've restarted
1322 * the init task. When init_task contacts the PF and
1323 * gets everything set up again, it'll restart the
1324 * watchdog for us. Down, boy. Sit. Stay. Woof.
1328 adapter->aq_pending = 0;
1329 adapter->aq_required = 0;
1330 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
1334 if ((adapter->state < __I40EVF_DOWN) ||
1335 (adapter->flags & I40EVF_FLAG_RESET_PENDING))
1338 /* check for reset */
1339 if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) &&
1340 (rd32(hw, I40E_VFGEN_RSTAT) & 0x3) != I40E_VFR_VFACTIVE) {
1341 adapter->state = __I40EVF_RESETTING;
1342 adapter->flags |= I40EVF_FLAG_RESET_PENDING;
1343 dev_err(&adapter->pdev->dev, "Hardware reset detected.\n");
1344 dev_info(&adapter->pdev->dev, "Scheduling reset task\n");
1345 schedule_work(&adapter->reset_task);
1346 adapter->aq_pending = 0;
1347 adapter->aq_required = 0;
1348 adapter->current_op = I40E_VIRTCHNL_OP_UNKNOWN;
1352 /* Process admin queue tasks. After init, everything gets done
1353 * here so we don't race on the admin queue.
1355 if (adapter->aq_pending)
1358 if (adapter->aq_required & I40EVF_FLAG_AQ_MAP_VECTORS) {
1359 i40evf_map_queues(adapter);
1363 if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_MAC_FILTER) {
1364 i40evf_add_ether_addrs(adapter);
1368 if (adapter->aq_required & I40EVF_FLAG_AQ_ADD_VLAN_FILTER) {
1369 i40evf_add_vlans(adapter);
1373 if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_MAC_FILTER) {
1374 i40evf_del_ether_addrs(adapter);
1378 if (adapter->aq_required & I40EVF_FLAG_AQ_DEL_VLAN_FILTER) {
1379 i40evf_del_vlans(adapter);
1383 if (adapter->aq_required & I40EVF_FLAG_AQ_DISABLE_QUEUES) {
1384 i40evf_disable_queues(adapter);
1388 if (adapter->aq_required & I40EVF_FLAG_AQ_CONFIGURE_QUEUES) {
1389 i40evf_configure_queues(adapter);
1393 if (adapter->aq_required & I40EVF_FLAG_AQ_ENABLE_QUEUES) {
1394 i40evf_enable_queues(adapter);
1398 if (adapter->state == __I40EVF_RUNNING)
1399 i40evf_request_stats(adapter);
1401 i40evf_irq_enable(adapter, true);
1402 i40evf_fire_sw_int(adapter, 0xFF);
1405 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
1407 if (adapter->aq_required)
1408 mod_timer(&adapter->watchdog_timer,
1409 jiffies + msecs_to_jiffies(20));
1411 mod_timer(&adapter->watchdog_timer, jiffies + (HZ * 2));
1412 schedule_work(&adapter->adminq_task);
1415 static int next_queue(struct i40evf_adapter *adapter, int j)
1419 return j >= adapter->vsi_res->num_queue_pairs ? 0 : j;
1423 * i40evf_configure_rss - Prepare for RSS if used
1424 * @adapter: board private structure
1426 static void i40evf_configure_rss(struct i40evf_adapter *adapter)
1428 struct i40e_hw *hw = &adapter->hw;
1433 /* Set of random keys generated using kernel random number generator */
1434 static const u32 seed[I40E_VFQF_HKEY_MAX_INDEX + 1] = {
1435 0x794221b4, 0xbca0c5ab, 0x6cd5ebd9, 0x1ada6127,
1436 0x983b3aa1, 0x1c4e71eb, 0x7f6328b2, 0xfcdc0da0,
1437 0xc135cafa, 0x7a6f7e2d, 0xe7102d28, 0x163cd12e,
1440 /* Hash type is configured by the PF - we just supply the key */
1442 /* Fill out hash function seed */
1443 for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++)
1444 wr32(hw, I40E_VFQF_HKEY(i), seed[i]);
1446 /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */
1447 hena = I40E_DEFAULT_RSS_HENA;
1448 wr32(hw, I40E_VFQF_HENA(0), (u32)hena);
1449 wr32(hw, I40E_VFQF_HENA(1), (u32)(hena >> 32));
1451 /* Populate the LUT with max no. of queues in round robin fashion */
1452 j = adapter->vsi_res->num_queue_pairs;
1453 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++) {
1454 lut = next_queue(adapter, j);
1455 lut |= next_queue(adapter, j) << 8;
1456 lut |= next_queue(adapter, j) << 16;
1457 lut |= next_queue(adapter, j) << 24;
1458 wr32(hw, I40E_VFQF_HLUT(i), lut);
1463 #define I40EVF_RESET_WAIT_MS 100
1464 #define I40EVF_RESET_WAIT_COUNT 200
1466 * i40evf_reset_task - Call-back task to handle hardware reset
1467 * @work: pointer to work_struct
1469 * During reset we need to shut down and reinitialize the admin queue
1470 * before we can use it to communicate with the PF again. We also clear
1471 * and reinit the rings because that context is lost as well.
1473 static void i40evf_reset_task(struct work_struct *work)
1475 struct i40evf_adapter *adapter = container_of(work,
1476 struct i40evf_adapter,
1478 struct i40e_hw *hw = &adapter->hw;
1482 while (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK,
1483 &adapter->crit_section))
1486 if (adapter->flags & I40EVF_FLAG_RESET_NEEDED) {
1487 dev_info(&adapter->pdev->dev, "Requesting reset from PF\n");
1488 i40evf_request_reset(adapter);
1491 /* poll until we see the reset actually happen */
1492 for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) {
1493 rstat_val = rd32(hw, I40E_VFGEN_RSTAT) &
1494 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
1495 if (rstat_val != I40E_VFR_VFACTIVE) {
1496 dev_info(&adapter->pdev->dev, "Reset now occurring\n");
1499 msleep(I40EVF_RESET_WAIT_MS);
1502 if (i == I40EVF_RESET_WAIT_COUNT) {
1503 dev_err(&adapter->pdev->dev, "Reset was not detected\n");
1504 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
1505 goto continue_reset; /* act like the reset happened */
1508 /* wait until the reset is complete and the PF is responding to us */
1509 for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) {
1510 rstat_val = rd32(hw, I40E_VFGEN_RSTAT) &
1511 I40E_VFGEN_RSTAT_VFR_STATE_MASK;
1512 if (rstat_val == I40E_VFR_VFACTIVE) {
1513 dev_info(&adapter->pdev->dev, "Reset is complete. Reinitializing.\n");
1516 msleep(I40EVF_RESET_WAIT_MS);
1519 if (i == I40EVF_RESET_WAIT_COUNT) {
1520 /* reset never finished */
1521 dev_err(&adapter->pdev->dev, "Reset never finished (%x). PF driver is dead, and so am I.\n",
1523 adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED;
1525 if (netif_running(adapter->netdev))
1526 i40evf_close(adapter->netdev);
1528 i40evf_free_misc_irq(adapter);
1529 i40evf_reset_interrupt_capability(adapter);
1530 i40evf_free_queues(adapter);
1531 kfree(adapter->vf_res);
1532 i40evf_shutdown_adminq(hw);
1533 adapter->netdev->flags &= ~IFF_UP;
1534 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
1535 return; /* Do not attempt to reinit. It's dead, Jim. */
1539 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
1541 i40evf_down(adapter);
1542 adapter->state = __I40EVF_RESETTING;
1544 /* kill and reinit the admin queue */
1545 if (i40evf_shutdown_adminq(hw))
1546 dev_warn(&adapter->pdev->dev,
1547 "%s: Failed to destroy the Admin Queue resources\n",
1549 err = i40evf_init_adminq(hw);
1551 dev_info(&adapter->pdev->dev, "%s: init_adminq failed: %d\n",
1554 adapter->aq_pending = 0;
1555 adapter->aq_required = 0;
1556 i40evf_map_queues(adapter);
1557 clear_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section);
1559 mod_timer(&adapter->watchdog_timer, jiffies + 2);
1561 if (netif_running(adapter->netdev)) {
1562 /* allocate transmit descriptors */
1563 err = i40evf_setup_all_tx_resources(adapter);
1567 /* allocate receive descriptors */
1568 err = i40evf_setup_all_rx_resources(adapter);
1572 i40evf_configure(adapter);
1574 err = i40evf_up_complete(adapter);
1578 i40evf_irq_enable(adapter, true);
1582 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit.\n");
1583 i40evf_close(adapter->netdev);
1587 * i40evf_adminq_task - worker thread to clean the admin queue
1588 * @work: pointer to work_struct containing our data
1590 static void i40evf_adminq_task(struct work_struct *work)
1592 struct i40evf_adapter *adapter =
1593 container_of(work, struct i40evf_adapter, adminq_task);
1594 struct i40e_hw *hw = &adapter->hw;
1595 struct i40e_arq_event_info event;
1596 struct i40e_virtchnl_msg *v_msg;
1600 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED)
1603 event.msg_size = I40EVF_MAX_AQ_BUF_SIZE;
1604 event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
1605 if (!event.msg_buf) {
1606 dev_info(&adapter->pdev->dev, "%s: no memory for ARQ clean\n",
1610 v_msg = (struct i40e_virtchnl_msg *)&event.desc;
1612 ret = i40evf_clean_arq_element(hw, &event, &pending);
1614 break; /* No event to process or error cleaning ARQ */
1616 i40evf_virtchnl_completion(adapter, v_msg->v_opcode,
1617 v_msg->v_retval, event.msg_buf,
1620 dev_info(&adapter->pdev->dev,
1621 "%s: ARQ: Pending events %d\n",
1623 memset(event.msg_buf, 0, I40EVF_MAX_AQ_BUF_SIZE);
1627 /* re-enable Admin queue interrupt cause */
1628 i40evf_misc_irq_enable(adapter);
1630 kfree(event.msg_buf);
1634 * i40evf_free_all_tx_resources - Free Tx Resources for All Queues
1635 * @adapter: board private structure
1637 * Free all transmit software resources
1639 static void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter)
1643 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
1644 if (adapter->tx_rings[i]->desc)
1645 i40evf_free_tx_resources(adapter->tx_rings[i]);
1650 * i40evf_setup_all_tx_resources - allocate all queues Tx resources
1651 * @adapter: board private structure
1653 * If this function returns with an error, then it's possible one or
1654 * more of the rings is populated (while the rest are not). It is the
1655 * callers duty to clean those orphaned rings.
1657 * Return 0 on success, negative on failure
1659 static int i40evf_setup_all_tx_resources(struct i40evf_adapter *adapter)
1663 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
1664 err = i40evf_setup_tx_descriptors(adapter->tx_rings[i]);
1667 dev_err(&adapter->pdev->dev,
1668 "%s: Allocation for Tx Queue %u failed\n",
1677 * i40evf_setup_all_rx_resources - allocate all queues Rx resources
1678 * @adapter: board private structure
1680 * If this function returns with an error, then it's possible one or
1681 * more of the rings is populated (while the rest are not). It is the
1682 * callers duty to clean those orphaned rings.
1684 * Return 0 on success, negative on failure
1686 static int i40evf_setup_all_rx_resources(struct i40evf_adapter *adapter)
1690 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++) {
1691 err = i40evf_setup_rx_descriptors(adapter->rx_rings[i]);
1694 dev_err(&adapter->pdev->dev,
1695 "%s: Allocation for Rx Queue %u failed\n",
1703 * i40evf_free_all_rx_resources - Free Rx Resources for All Queues
1704 * @adapter: board private structure
1706 * Free all receive software resources
1708 static void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter)
1712 for (i = 0; i < adapter->vsi_res->num_queue_pairs; i++)
1713 if (adapter->rx_rings[i]->desc)
1714 i40evf_free_rx_resources(adapter->rx_rings[i]);
1718 * i40evf_open - Called when a network interface is made active
1719 * @netdev: network interface device structure
1721 * Returns 0 on success, negative value on failure
1723 * The open entry point is called when a network interface is made
1724 * active by the system (IFF_UP). At this point all resources needed
1725 * for transmit and receive operations are allocated, the interrupt
1726 * handler is registered with the OS, the watchdog timer is started,
1727 * and the stack is notified that the interface is ready.
1729 static int i40evf_open(struct net_device *netdev)
1731 struct i40evf_adapter *adapter = netdev_priv(netdev);
1734 if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) {
1735 dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n");
1738 if (adapter->state != __I40EVF_DOWN)
1741 /* allocate transmit descriptors */
1742 err = i40evf_setup_all_tx_resources(adapter);
1746 /* allocate receive descriptors */
1747 err = i40evf_setup_all_rx_resources(adapter);
1751 /* clear any pending interrupts, may auto mask */
1752 err = i40evf_request_traffic_irqs(adapter, netdev->name);
1756 i40evf_configure(adapter);
1758 err = i40evf_up_complete(adapter);
1762 i40evf_irq_enable(adapter, true);
1767 i40evf_down(adapter);
1768 i40evf_free_traffic_irqs(adapter);
1770 i40evf_free_all_rx_resources(adapter);
1772 i40evf_free_all_tx_resources(adapter);
1778 * i40evf_close - Disables a network interface
1779 * @netdev: network interface device structure
1781 * Returns 0, this is not allowed to fail
1783 * The close entry point is called when an interface is de-activated
1784 * by the OS. The hardware is still under the drivers control, but
1785 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue)
1786 * are freed, along with all transmit and receive resources.
1788 static int i40evf_close(struct net_device *netdev)
1790 struct i40evf_adapter *adapter = netdev_priv(netdev);
1792 if (adapter->state <= __I40EVF_DOWN)
1795 /* signal that we are down to the interrupt handler */
1796 adapter->state = __I40EVF_DOWN;
1798 set_bit(__I40E_DOWN, &adapter->vsi.state);
1800 i40evf_down(adapter);
1801 i40evf_free_traffic_irqs(adapter);
1803 i40evf_free_all_tx_resources(adapter);
1804 i40evf_free_all_rx_resources(adapter);
1810 * i40evf_get_stats - Get System Network Statistics
1811 * @netdev: network interface device structure
1813 * Returns the address of the device statistics structure.
1814 * The statistics are actually updated from the timer callback.
1816 static struct net_device_stats *i40evf_get_stats(struct net_device *netdev)
1818 struct i40evf_adapter *adapter = netdev_priv(netdev);
1820 /* only return the current stats */
1821 return &adapter->net_stats;
1825 * i40evf_reinit_locked - Software reinit
1826 * @adapter: board private structure
1828 * Reinititalizes the ring structures in response to a software configuration
1829 * change. Roughly the same as close followed by open, but skips releasing
1830 * and reallocating the interrupts.
1832 void i40evf_reinit_locked(struct i40evf_adapter *adapter)
1834 struct net_device *netdev = adapter->netdev;
1837 WARN_ON(in_interrupt());
1839 adapter->state = __I40EVF_RESETTING;
1841 i40evf_down(adapter);
1843 /* allocate transmit descriptors */
1844 err = i40evf_setup_all_tx_resources(adapter);
1848 /* allocate receive descriptors */
1849 err = i40evf_setup_all_rx_resources(adapter);
1853 i40evf_configure(adapter);
1855 err = i40evf_up_complete(adapter);
1859 i40evf_irq_enable(adapter, true);
1863 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit.\n");
1864 i40evf_close(netdev);
1868 * i40evf_change_mtu - Change the Maximum Transfer Unit
1869 * @netdev: network interface device structure
1870 * @new_mtu: new value for maximum frame size
1872 * Returns 0 on success, negative on failure
1874 static int i40evf_change_mtu(struct net_device *netdev, int new_mtu)
1876 struct i40evf_adapter *adapter = netdev_priv(netdev);
1877 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
1879 if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1882 /* must set new MTU before calling down or up */
1883 netdev->mtu = new_mtu;
1884 i40evf_reinit_locked(adapter);
1888 static const struct net_device_ops i40evf_netdev_ops = {
1889 .ndo_open = i40evf_open,
1890 .ndo_stop = i40evf_close,
1891 .ndo_start_xmit = i40evf_xmit_frame,
1892 .ndo_get_stats = i40evf_get_stats,
1893 .ndo_set_rx_mode = i40evf_set_rx_mode,
1894 .ndo_validate_addr = eth_validate_addr,
1895 .ndo_set_mac_address = i40evf_set_mac,
1896 .ndo_change_mtu = i40evf_change_mtu,
1897 .ndo_tx_timeout = i40evf_tx_timeout,
1898 .ndo_vlan_rx_add_vid = i40evf_vlan_rx_add_vid,
1899 .ndo_vlan_rx_kill_vid = i40evf_vlan_rx_kill_vid,
1903 * i40evf_check_reset_complete - check that VF reset is complete
1904 * @hw: pointer to hw struct
1906 * Returns 0 if device is ready to use, or -EBUSY if it's in reset.
1908 static int i40evf_check_reset_complete(struct i40e_hw *hw)
1913 for (i = 0; i < 100; i++) {
1914 rstat = rd32(hw, I40E_VFGEN_RSTAT);
1915 if (rstat == I40E_VFR_VFACTIVE)
1923 * i40evf_init_task - worker thread to perform delayed initialization
1924 * @work: pointer to work_struct containing our data
1926 * This task completes the work that was begun in probe. Due to the nature
1927 * of VF-PF communications, we may need to wait tens of milliseconds to get
1928 * reponses back from the PF. Rather than busy-wait in probe and bog down the
1929 * whole system, we'll do it in a task so we can sleep.
1930 * This task only runs during driver init. Once we've established
1931 * communications with the PF driver and set up our netdev, the watchdog
1934 static void i40evf_init_task(struct work_struct *work)
1936 struct i40evf_adapter *adapter = container_of(work,
1937 struct i40evf_adapter,
1939 struct net_device *netdev = adapter->netdev;
1940 struct i40evf_mac_filter *f;
1941 struct i40e_hw *hw = &adapter->hw;
1942 struct pci_dev *pdev = adapter->pdev;
1945 switch (adapter->state) {
1946 case __I40EVF_STARTUP:
1947 /* driver loaded, probe complete */
1948 adapter->flags &= ~I40EVF_FLAG_PF_COMMS_FAILED;
1949 adapter->flags &= ~I40EVF_FLAG_RESET_PENDING;
1950 err = i40e_set_mac_type(hw);
1952 dev_err(&pdev->dev, "Failed to set MAC type (%d)\n",
1956 err = i40evf_check_reset_complete(hw);
1958 dev_err(&pdev->dev, "Device is still in reset (%d)\n",
1962 hw->aq.num_arq_entries = I40EVF_AQ_LEN;
1963 hw->aq.num_asq_entries = I40EVF_AQ_LEN;
1964 hw->aq.arq_buf_size = I40EVF_MAX_AQ_BUF_SIZE;
1965 hw->aq.asq_buf_size = I40EVF_MAX_AQ_BUF_SIZE;
1967 err = i40evf_init_adminq(hw);
1969 dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n",
1973 err = i40evf_send_api_ver(adapter);
1975 dev_err(&pdev->dev, "Unable to send to PF (%d)\n", err);
1976 i40evf_shutdown_adminq(hw);
1979 adapter->state = __I40EVF_INIT_VERSION_CHECK;
1982 case __I40EVF_INIT_VERSION_CHECK:
1983 if (!i40evf_asq_done(hw)) {
1984 dev_err(&pdev->dev, "Admin queue command never completed.\n");
1988 /* aq msg sent, awaiting reply */
1989 err = i40evf_verify_api_ver(adapter);
1991 dev_err(&pdev->dev, "Unable to verify API version (%d)\n",
1995 err = i40evf_send_vf_config_msg(adapter);
1997 dev_err(&pdev->dev, "Unable send config request (%d)\n",
2001 adapter->state = __I40EVF_INIT_GET_RESOURCES;
2004 case __I40EVF_INIT_GET_RESOURCES:
2005 /* aq msg sent, awaiting reply */
2006 if (!adapter->vf_res) {
2007 bufsz = sizeof(struct i40e_virtchnl_vf_resource) +
2009 sizeof(struct i40e_virtchnl_vsi_resource));
2010 adapter->vf_res = kzalloc(bufsz, GFP_KERNEL);
2011 if (!adapter->vf_res)
2014 err = i40evf_get_vf_config(adapter);
2015 if (err == I40E_ERR_ADMIN_QUEUE_NO_WORK)
2018 dev_err(&pdev->dev, "Unable to get VF config (%d)\n",
2022 adapter->state = __I40EVF_INIT_SW;
2027 /* got VF config message back from PF, now we can parse it */
2028 for (i = 0; i < adapter->vf_res->num_vsis; i++) {
2029 if (adapter->vf_res->vsi_res[i].vsi_type == I40E_VSI_SRIOV)
2030 adapter->vsi_res = &adapter->vf_res->vsi_res[i];
2032 if (!adapter->vsi_res) {
2033 dev_err(&pdev->dev, "No LAN VSI found\n");
2037 adapter->flags |= I40EVF_FLAG_RX_CSUM_ENABLED;
2039 netdev->netdev_ops = &i40evf_netdev_ops;
2040 i40evf_set_ethtool_ops(netdev);
2041 netdev->watchdog_timeo = 5 * HZ;
2042 netdev->features |= NETIF_F_HIGHDMA |
2052 if (adapter->vf_res->vf_offload_flags
2053 & I40E_VIRTCHNL_VF_OFFLOAD_VLAN) {
2054 netdev->vlan_features = netdev->features;
2055 netdev->features |= NETIF_F_HW_VLAN_CTAG_TX |
2056 NETIF_F_HW_VLAN_CTAG_RX |
2057 NETIF_F_HW_VLAN_CTAG_FILTER;
2060 /* copy netdev features into list of user selectable features */
2061 netdev->hw_features |= netdev->features;
2062 netdev->hw_features &= ~NETIF_F_RXCSUM;
2064 if (!is_valid_ether_addr(adapter->hw.mac.addr)) {
2065 dev_info(&pdev->dev, "Invalid MAC address %pMAC, using random\n",
2066 adapter->hw.mac.addr);
2067 random_ether_addr(adapter->hw.mac.addr);
2069 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
2070 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
2072 INIT_LIST_HEAD(&adapter->mac_filter_list);
2073 INIT_LIST_HEAD(&adapter->vlan_filter_list);
2074 f = kzalloc(sizeof(*f), GFP_ATOMIC);
2078 memcpy(f->macaddr, adapter->hw.mac.addr, ETH_ALEN);
2080 adapter->aq_required |= I40EVF_FLAG_AQ_ADD_MAC_FILTER;
2082 list_add(&f->list, &adapter->mac_filter_list);
2084 init_timer(&adapter->watchdog_timer);
2085 adapter->watchdog_timer.function = &i40evf_watchdog_timer;
2086 adapter->watchdog_timer.data = (unsigned long)adapter;
2087 mod_timer(&adapter->watchdog_timer, jiffies + 1);
2089 err = i40evf_init_interrupt_scheme(adapter);
2092 i40evf_map_rings_to_vectors(adapter);
2093 i40evf_configure_rss(adapter);
2094 err = i40evf_request_misc_irq(adapter);
2098 netif_carrier_off(netdev);
2100 adapter->vsi.id = adapter->vsi_res->vsi_id;
2101 adapter->vsi.seid = adapter->vsi_res->vsi_id; /* dummy */
2102 adapter->vsi.back = adapter;
2103 adapter->vsi.base_vector = 1;
2104 adapter->vsi.work_limit = I40E_DEFAULT_IRQ_WORK;
2105 adapter->vsi.rx_itr_setting = I40E_ITR_DYNAMIC;
2106 adapter->vsi.tx_itr_setting = I40E_ITR_DYNAMIC;
2107 adapter->vsi.netdev = adapter->netdev;
2109 if (!adapter->netdev_registered) {
2110 err = register_netdev(netdev);
2115 adapter->netdev_registered = true;
2117 netif_tx_stop_all_queues(netdev);
2119 dev_info(&pdev->dev, "MAC address: %pMAC\n", adapter->hw.mac.addr);
2120 if (netdev->features & NETIF_F_GRO)
2121 dev_info(&pdev->dev, "GRO is enabled\n");
2123 dev_info(&pdev->dev, "%s\n", i40evf_driver_string);
2124 adapter->state = __I40EVF_DOWN;
2125 set_bit(__I40E_DOWN, &adapter->vsi.state);
2126 i40evf_misc_irq_enable(adapter);
2129 schedule_delayed_work(&adapter->init_task,
2130 msecs_to_jiffies(50));
2134 i40evf_free_misc_irq(adapter);
2136 i40evf_reset_interrupt_capability(adapter);
2138 kfree(adapter->vf_res);
2139 adapter->vf_res = NULL;
2141 /* Things went into the weeds, so try again later */
2142 if (++adapter->aq_wait_count > I40EVF_AQ_MAX_ERR) {
2143 dev_err(&pdev->dev, "Failed to communicate with PF; giving up.\n");
2144 adapter->flags |= I40EVF_FLAG_PF_COMMS_FAILED;
2145 return; /* do not reschedule */
2147 schedule_delayed_work(&adapter->init_task, HZ * 3);
2152 * i40evf_shutdown - Shutdown the device in preparation for a reboot
2153 * @pdev: pci device structure
2155 static void i40evf_shutdown(struct pci_dev *pdev)
2157 struct net_device *netdev = pci_get_drvdata(pdev);
2159 netif_device_detach(netdev);
2161 if (netif_running(netdev))
2162 i40evf_close(netdev);
2165 pci_save_state(pdev);
2168 pci_disable_device(pdev);
2172 * i40evf_probe - Device Initialization Routine
2173 * @pdev: PCI device information struct
2174 * @ent: entry in i40evf_pci_tbl
2176 * Returns 0 on success, negative on failure
2178 * i40evf_probe initializes an adapter identified by a pci_dev structure.
2179 * The OS initialization, configuring of the adapter private structure,
2180 * and a hardware reset occur.
2182 static int i40evf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2184 struct net_device *netdev;
2185 struct i40evf_adapter *adapter = NULL;
2186 struct i40e_hw *hw = NULL;
2189 err = pci_enable_device(pdev);
2193 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
2195 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
2198 "DMA configuration failed: 0x%x\n", err);
2203 err = pci_request_regions(pdev, i40evf_driver_name);
2206 "pci_request_regions failed 0x%x\n", err);
2210 pci_enable_pcie_error_reporting(pdev);
2212 pci_set_master(pdev);
2214 netdev = alloc_etherdev_mq(sizeof(struct i40evf_adapter),
2218 goto err_alloc_etherdev;
2221 SET_NETDEV_DEV(netdev, &pdev->dev);
2223 pci_set_drvdata(pdev, netdev);
2224 adapter = netdev_priv(netdev);
2226 adapter->netdev = netdev;
2227 adapter->pdev = pdev;
2232 adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
2233 adapter->state = __I40EVF_STARTUP;
2235 /* Call save state here because it relies on the adapter struct. */
2236 pci_save_state(pdev);
2238 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
2239 pci_resource_len(pdev, 0));
2244 hw->vendor_id = pdev->vendor;
2245 hw->device_id = pdev->device;
2246 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
2247 hw->subsystem_vendor_id = pdev->subsystem_vendor;
2248 hw->subsystem_device_id = pdev->subsystem_device;
2249 hw->bus.device = PCI_SLOT(pdev->devfn);
2250 hw->bus.func = PCI_FUNC(pdev->devfn);
2252 INIT_WORK(&adapter->reset_task, i40evf_reset_task);
2253 INIT_WORK(&adapter->adminq_task, i40evf_adminq_task);
2254 INIT_WORK(&adapter->watchdog_task, i40evf_watchdog_task);
2255 INIT_DELAYED_WORK(&adapter->init_task, i40evf_init_task);
2256 schedule_delayed_work(&adapter->init_task, 10);
2261 free_netdev(netdev);
2263 pci_release_regions(pdev);
2266 pci_disable_device(pdev);
2272 * i40evf_suspend - Power management suspend routine
2273 * @pdev: PCI device information struct
2276 * Called when the system (VM) is entering sleep/suspend.
2278 static int i40evf_suspend(struct pci_dev *pdev, pm_message_t state)
2280 struct net_device *netdev = pci_get_drvdata(pdev);
2281 struct i40evf_adapter *adapter = netdev_priv(netdev);
2284 netif_device_detach(netdev);
2286 if (netif_running(netdev)) {
2288 i40evf_down(adapter);
2291 i40evf_free_misc_irq(adapter);
2292 i40evf_reset_interrupt_capability(adapter);
2294 retval = pci_save_state(pdev);
2298 pci_disable_device(pdev);
2304 * i40evf_resume - Power managment resume routine
2305 * @pdev: PCI device information struct
2307 * Called when the system (VM) is resumed from sleep/suspend.
2309 static int i40evf_resume(struct pci_dev *pdev)
2311 struct i40evf_adapter *adapter = pci_get_drvdata(pdev);
2312 struct net_device *netdev = adapter->netdev;
2315 pci_set_power_state(pdev, PCI_D0);
2316 pci_restore_state(pdev);
2317 /* pci_restore_state clears dev->state_saved so call
2318 * pci_save_state to restore it.
2320 pci_save_state(pdev);
2322 err = pci_enable_device_mem(pdev);
2324 dev_err(&pdev->dev, "Cannot enable PCI device from suspend.\n");
2327 pci_set_master(pdev);
2330 err = i40evf_set_interrupt_capability(adapter);
2332 dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n");
2335 err = i40evf_request_misc_irq(adapter);
2338 dev_err(&pdev->dev, "Cannot get interrupt vector.\n");
2342 schedule_work(&adapter->reset_task);
2344 netif_device_attach(netdev);
2349 #endif /* CONFIG_PM */
2351 * i40evf_remove - Device Removal Routine
2352 * @pdev: PCI device information struct
2354 * i40evf_remove is called by the PCI subsystem to alert the driver
2355 * that it should release a PCI device. The could be caused by a
2356 * Hot-Plug event, or because the driver is going to be removed from
2359 static void i40evf_remove(struct pci_dev *pdev)
2361 struct net_device *netdev = pci_get_drvdata(pdev);
2362 struct i40evf_adapter *adapter = netdev_priv(netdev);
2363 struct i40e_hw *hw = &adapter->hw;
2365 cancel_delayed_work_sync(&adapter->init_task);
2366 cancel_work_sync(&adapter->reset_task);
2368 if (adapter->netdev_registered) {
2369 unregister_netdev(netdev);
2370 adapter->netdev_registered = false;
2372 adapter->state = __I40EVF_REMOVE;
2374 if (adapter->msix_entries) {
2375 i40evf_misc_irq_disable(adapter);
2376 i40evf_free_misc_irq(adapter);
2377 i40evf_reset_interrupt_capability(adapter);
2380 del_timer_sync(&adapter->watchdog_timer);
2381 flush_scheduled_work();
2383 if (hw->aq.asq.count)
2384 i40evf_shutdown_adminq(hw);
2386 iounmap(hw->hw_addr);
2387 pci_release_regions(pdev);
2389 i40evf_free_queues(adapter);
2390 kfree(adapter->vf_res);
2392 free_netdev(netdev);
2394 pci_disable_pcie_error_reporting(pdev);
2396 pci_disable_device(pdev);
2399 static struct pci_driver i40evf_driver = {
2400 .name = i40evf_driver_name,
2401 .id_table = i40evf_pci_tbl,
2402 .probe = i40evf_probe,
2403 .remove = i40evf_remove,
2405 .suspend = i40evf_suspend,
2406 .resume = i40evf_resume,
2408 .shutdown = i40evf_shutdown,
2412 * i40e_init_module - Driver Registration Routine
2414 * i40e_init_module is the first routine called when the driver is
2415 * loaded. All it does is register with the PCI subsystem.
2417 static int __init i40evf_init_module(void)
2420 pr_info("i40evf: %s - version %s\n", i40evf_driver_string,
2421 i40evf_driver_version);
2423 pr_info("%s\n", i40evf_copyright);
2425 ret = pci_register_driver(&i40evf_driver);
2429 module_init(i40evf_init_module);
2432 * i40e_exit_module - Driver Exit Cleanup Routine
2434 * i40e_exit_module is called just before the driver is removed
2437 static void __exit i40evf_exit_module(void)
2439 pci_unregister_driver(&i40evf_driver);
2442 module_exit(i40evf_exit_module);